From 228b1a473037c89d524e03a569c688a22241b4ea Mon Sep 17 00:00:00 2001 From: Mihai Caraman Date: Thu, 8 Aug 2013 15:56:09 +0300 Subject: powerpc/booke64: Add LRAT error exception handler LRAT (Logical to Real Address Translation) present in MMU v2 provides hardware translation from a logical page number (LPN) to a real page number (RPN) when tlbwe is executed by a guest or when a page table translation occurs from a guest virtual address. Add LRAT error exception handler to Booke3E 64-bit kernel and the basic KVM handler to avoid build breakage. This is a prerequisite for KVM LRAT support that will follow. Signed-off-by: Mihai Caraman Signed-off-by: Scott Wood --- arch/powerpc/include/asm/kvm_asm.h | 1 + arch/powerpc/include/asm/reg_booke.h | 1 + arch/powerpc/kernel/cpu_setup_fsl_booke.S | 12 ++++++++++++ arch/powerpc/kernel/exceptions-64e.S | 17 +++++++++++++++++ arch/powerpc/kvm/bookehv_interrupts.S | 2 ++ 5 files changed, 33 insertions(+) (limited to 'arch/powerpc') diff --git a/arch/powerpc/include/asm/kvm_asm.h b/arch/powerpc/include/asm/kvm_asm.h index 1bd92fd43cfb..1503d8c7c41b 100644 --- a/arch/powerpc/include/asm/kvm_asm.h +++ b/arch/powerpc/include/asm/kvm_asm.h @@ -74,6 +74,7 @@ #define BOOKE_INTERRUPT_GUEST_DBELL_CRIT 39 #define BOOKE_INTERRUPT_HV_SYSCALL 40 #define BOOKE_INTERRUPT_HV_PRIV 41 +#define BOOKE_INTERRUPT_LRAT_ERROR 42 /* book3s */ diff --git a/arch/powerpc/include/asm/reg_booke.h b/arch/powerpc/include/asm/reg_booke.h index 2e31aacd8acc..1f7134dd0946 100644 --- a/arch/powerpc/include/asm/reg_booke.h +++ b/arch/powerpc/include/asm/reg_booke.h @@ -101,6 +101,7 @@ #define SPRN_IVOR39 0x1B1 /* Interrupt Vector Offset Register 39 */ #define SPRN_IVOR40 0x1B2 /* Interrupt Vector Offset Register 40 */ #define SPRN_IVOR41 0x1B3 /* Interrupt Vector Offset Register 41 */ +#define SPRN_IVOR42 0x1B4 /* Interrupt Vector Offset Register 42 */ #define SPRN_GIVOR2 0x1B8 /* Guest IVOR2 */ #define SPRN_GIVOR3 0x1B9 /* Guest IVOR3 */ #define SPRN_GIVOR4 0x1BA /* Guest IVOR4 */ diff --git a/arch/powerpc/kernel/cpu_setup_fsl_booke.S b/arch/powerpc/kernel/cpu_setup_fsl_booke.S index bfb18c7290b7..fa6862db8a02 100644 --- a/arch/powerpc/kernel/cpu_setup_fsl_booke.S +++ b/arch/powerpc/kernel/cpu_setup_fsl_booke.S @@ -57,6 +57,12 @@ _GLOBAL(__setup_cpu_e6500) mflr r6 #ifdef CONFIG_PPC64 bl .setup_altivec_ivors + /* Touch IVOR42 only if the CPU supports E.HV category */ + mfspr r10,SPRN_MMUCFG + rlwinm. r10,r10,0,MMUCFG_LPIDSIZE + beq 1f + bl .setup_lrat_ivor +1: #endif bl __setup_cpu_e5500 mtlr r6 @@ -119,6 +125,12 @@ _GLOBAL(__setup_cpu_e5500) _GLOBAL(__restore_cpu_e6500) mflr r5 bl .setup_altivec_ivors + /* Touch IVOR42 only if the CPU supports E.HV category */ + mfspr r10,SPRN_MMUCFG + rlwinm. r10,r10,0,MMUCFG_LPIDSIZE + beq 1f + bl .setup_lrat_ivor +1: bl __restore_cpu_e5500 mtlr r5 blr diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S index e7751561fd1d..4d5a0b1034e8 100644 --- a/arch/powerpc/kernel/exceptions-64e.S +++ b/arch/powerpc/kernel/exceptions-64e.S @@ -308,6 +308,7 @@ interrupt_base_book3e: /* fake trap */ EXCEPTION_STUB(0x2e0, guest_doorbell_crit) EXCEPTION_STUB(0x300, hypercall) EXCEPTION_STUB(0x320, ehpriv) + EXCEPTION_STUB(0x340, lrat_error) .globl interrupt_end_book3e interrupt_end_book3e: @@ -677,6 +678,17 @@ kernel_dbg_exc: bl .unknown_exception b .ret_from_except +/* LRAT Error interrupt */ + START_EXCEPTION(lrat_error); + NORMAL_EXCEPTION_PROLOG(0x340, BOOKE_INTERRUPT_LRAT_ERROR, + PROLOG_ADDITION_NONE) + EXCEPTION_COMMON(0x340, PACA_EXGEN, INTS_KEEP) + addi r3,r1,STACK_FRAME_OVERHEAD + bl .save_nvgprs + INTS_RESTORE_HARD + bl .unknown_exception + b .ret_from_except + /* * An interrupt came in while soft-disabled; We mark paca->irq_happened * accordingly and if the interrupt is level sensitive, we hard disable @@ -859,6 +871,7 @@ BAD_STACK_TRAMPOLINE(0x2e0) BAD_STACK_TRAMPOLINE(0x300) BAD_STACK_TRAMPOLINE(0x310) BAD_STACK_TRAMPOLINE(0x320) +BAD_STACK_TRAMPOLINE(0x340) BAD_STACK_TRAMPOLINE(0x400) BAD_STACK_TRAMPOLINE(0x500) BAD_STACK_TRAMPOLINE(0x600) @@ -1414,3 +1427,7 @@ _GLOBAL(setup_ehv_ivors) SET_IVOR(38, 0x2c0) /* Guest Processor Doorbell */ SET_IVOR(39, 0x2e0) /* Guest Processor Doorbell Crit/MC */ blr + +_GLOBAL(setup_lrat_ivor) + SET_IVOR(42, 0x340) /* LRAT Error */ + blr diff --git a/arch/powerpc/kvm/bookehv_interrupts.S b/arch/powerpc/kvm/bookehv_interrupts.S index e8ed7d659c55..a0d6929d8678 100644 --- a/arch/powerpc/kvm/bookehv_interrupts.S +++ b/arch/powerpc/kvm/bookehv_interrupts.S @@ -319,6 +319,8 @@ kvm_handler BOOKE_INTERRUPT_DEBUG, EX_PARAMS(DBG), \ SPRN_DSRR0, SPRN_DSRR1, 0 kvm_handler BOOKE_INTERRUPT_DEBUG, EX_PARAMS(CRIT), \ SPRN_CSRR0, SPRN_CSRR1, 0 +kvm_handler BOOKE_INTERRUPT_LRAT_ERROR, EX_PARAMS(GEN), \ + SPRN_SRR0, SPRN_SRR1, (NEED_EMU | NEED_DEAR | NEED_ESR) #else /* * For input register values, see arch/powerpc/include/asm/kvm_booke_hv_asm.h -- cgit v1.2.3 From 640e922501103aaf2e0abb4cf4de5d49fa8342f7 Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Tue, 10 Dec 2013 23:07:45 +0000 Subject: powerpc: fix exception clearing in e500 SPE float emulation The e500 SPE floating-point emulation code clears existing exceptions (__FPU_FPSCR &= ~FP_EX_MASK;) before ORing in the exceptions from the emulated operation. However, these exception bits are the "sticky", cumulative exception bits, and should only be cleared by the user program setting SPEFSCR, not implicitly by any floating-point instruction (whether executed purely by the hardware or emulated). The spurious clearing of these bits shows up as missing exceptions in glibc testing. Fixing this, however, is not as simple as just not clearing the bits, because while the bits may be from previous floating-point operations (in which case they should not be cleared), the processor can also set the sticky bits itself before the interrupt for an exception occurs, and this can happen in cases when IEEE 754 semantics are that the sticky bit should not be set. Specifically, the "invalid" sticky bit is set in various cases with non-finite operands, where IEEE 754 semantics do not involve raising such an exception, and the "underflow" sticky bit is set in cases of exact underflow, whereas IEEE 754 semantics are that this flag is set only for inexact underflow. Thus, for correct emulation the kernel needs to know the setting of these two sticky bits before the instruction being emulated. When a floating-point operation raises an exception, the kernel can note the state of the sticky bits immediately afterwards. Some functions that affect the state of these bits, such as fesetenv and feholdexcept, need to use prctl with PR_GET_FPEXC and PR_SET_FPEXC anyway, and so it is natural to record the state of those bits during that call into the kernel and so avoid any need for a separate call into the kernel to inform it of a change to those bits. Thus, the interface I chose to use (in this patch and the glibc port) is that one of those prctl calls must be made after any userspace change to those sticky bits, other than through a floating-point operation that traps into the kernel anyway. feclearexcept and fesetexceptflag duly make those calls, which would not be required were it not for this issue. The previous EGLIBC port, and the uClibc code copied from it, is fundamentally broken as regards any use of prctl for floating-point exceptions because it didn't use the PR_FP_EXC_SW_ENABLE bit in its prctl calls (and did various worse things, such as passing a pointer when prctl expected an integer). If you avoid anything where prctl is used, the clearing of sticky bits still means it will never give anything approximating correct exception semantics with existing kernels. I don't believe the patch makes things any worse for existing code that doesn't try to inform the kernel of changes to sticky bits - such code may get incorrect exceptions in some cases, but it would have done so anyway in other cases. Signed-off-by: Joseph Myers Signed-off-by: Scott Wood --- arch/powerpc/include/asm/processor.h | 6 +++++- arch/powerpc/kernel/process.c | 30 ++++++++++++++++++++++++++++-- arch/powerpc/math-emu/math_efp.c | 20 +++++++++++++++++++- 3 files changed, 52 insertions(+), 4 deletions(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h index fc14a38c7ccf..91441d9cbaae 100644 --- a/arch/powerpc/include/asm/processor.h +++ b/arch/powerpc/include/asm/processor.h @@ -256,6 +256,8 @@ struct thread_struct { unsigned long evr[32]; /* upper 32-bits of SPE regs */ u64 acc; /* Accumulator */ unsigned long spefscr; /* SPE & eFP status */ + unsigned long spefscr_last; /* SPEFSCR value on last prctl + call or trap return */ int used_spe; /* set if process has used spe */ #endif /* CONFIG_SPE */ #ifdef CONFIG_PPC_TRANSACTIONAL_MEM @@ -317,7 +319,9 @@ struct thread_struct { (_ALIGN_UP(sizeof(init_thread_info), 16) + (unsigned long) &init_stack) #ifdef CONFIG_SPE -#define SPEFSCR_INIT .spefscr = SPEFSCR_FINVE | SPEFSCR_FDBZE | SPEFSCR_FUNFE | SPEFSCR_FOVFE, +#define SPEFSCR_INIT \ + .spefscr = SPEFSCR_FINVE | SPEFSCR_FDBZE | SPEFSCR_FUNFE | SPEFSCR_FOVFE, \ + .spefscr_last = SPEFSCR_FINVE | SPEFSCR_FDBZE | SPEFSCR_FUNFE | SPEFSCR_FOVFE, #else #define SPEFSCR_INIT #endif diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 3386d8ab7eb0..b08c0d03530f 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -1175,6 +1175,19 @@ int set_fpexc_mode(struct task_struct *tsk, unsigned int val) if (val & PR_FP_EXC_SW_ENABLE) { #ifdef CONFIG_SPE if (cpu_has_feature(CPU_FTR_SPE)) { + /* + * When the sticky exception bits are set + * directly by userspace, it must call prctl + * with PR_GET_FPEXC (with PR_FP_EXC_SW_ENABLE + * in the existing prctl settings) or + * PR_SET_FPEXC (with PR_FP_EXC_SW_ENABLE in + * the bits being set). functions + * saving and restoring the whole + * floating-point environment need to do so + * anyway to restore the prctl settings from + * the saved environment. + */ + tsk->thread.spefscr_last = mfspr(SPRN_SPEFSCR); tsk->thread.fpexc_mode = val & (PR_FP_EXC_SW_ENABLE | PR_FP_ALL_EXCEPT); return 0; @@ -1206,9 +1219,22 @@ int get_fpexc_mode(struct task_struct *tsk, unsigned long adr) if (tsk->thread.fpexc_mode & PR_FP_EXC_SW_ENABLE) #ifdef CONFIG_SPE - if (cpu_has_feature(CPU_FTR_SPE)) + if (cpu_has_feature(CPU_FTR_SPE)) { + /* + * When the sticky exception bits are set + * directly by userspace, it must call prctl + * with PR_GET_FPEXC (with PR_FP_EXC_SW_ENABLE + * in the existing prctl settings) or + * PR_SET_FPEXC (with PR_FP_EXC_SW_ENABLE in + * the bits being set). functions + * saving and restoring the whole + * floating-point environment need to do so + * anyway to restore the prctl settings from + * the saved environment. + */ + tsk->thread.spefscr_last = mfspr(SPRN_SPEFSCR); val = tsk->thread.fpexc_mode; - else + } else return -EINVAL; #else return -EINVAL; diff --git a/arch/powerpc/math-emu/math_efp.c b/arch/powerpc/math-emu/math_efp.c index a73f0884d358..59835c625dc6 100644 --- a/arch/powerpc/math-emu/math_efp.c +++ b/arch/powerpc/math-emu/math_efp.c @@ -630,9 +630,27 @@ update_ccr: regs->ccr |= (IR << ((7 - ((speinsn >> 23) & 0x7)) << 2)); update_regs: - __FPU_FPSCR &= ~FP_EX_MASK; + /* + * If the "invalid" exception sticky bit was set by the + * processor for non-finite input, but was not set before the + * instruction being emulated, clear it. Likewise for the + * "underflow" bit, which may have been set by the processor + * for exact underflow, not just inexact underflow when the + * flag should be set for IEEE 754 semantics. Other sticky + * exceptions will only be set by the processor when they are + * correct according to IEEE 754 semantics, and we must not + * clear sticky bits that were already set before the emulated + * instruction as they represent the user-visible sticky + * exception status. "inexact" traps to kernel are not + * required for IEEE semantics and are not enabled by default, + * so the "inexact" sticky bit may have been set by a previous + * instruction without the kernel being aware of it. + */ + __FPU_FPSCR + &= ~(FP_EX_INVALID | FP_EX_UNDERFLOW) | current->thread.spefscr_last; __FPU_FPSCR |= (FP_CUR_EXCEPTIONS & FP_EX_MASK); mtspr(SPRN_SPEFSCR, __FPU_FPSCR); + current->thread.spefscr_last = __FPU_FPSCR; current->thread.evr[fc] = vc.wp[0]; regs->gpr[fc] = vc.wp[1]; -- cgit v1.2.3 From 28414a6def9dc00dcd0d0f3eea6911fda9a4a4e1 Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Mon, 4 Nov 2013 16:53:14 +0000 Subject: powerpc: fix e500 SPE float rounding inexactness detection The e500 SPE floating-point emulation code for the rounding modes rounding to positive or negative infinity (which may not be implemented in hardware) tries to avoid emulating rounding if the result was inexact. However, it tests inexactness using the sticky bit with the cumulative result of previous operations, rather than with the non-sticky bits relating to the operation that generated the interrupt. Furthermore, when a vector operation generates the interrupt, it's possible that only one of the low and high parts is inexact, and so only that part should have rounding emulated. This results in incorrect rounding of exact results in these modes when the sticky bit is set from a previous operation. (I'm not sure why the rounding interrupts are generated at all when the result is exact, but empirically the hardware does generate them.) This patch checks for inexactness using the correct bits of SPEFSCR, and ensures that rounding only occurs when the relevant part of the result was actually inexact. Signed-off-by: Joseph Myers Signed-off-by: Scott Wood --- arch/powerpc/math-emu/math_efp.c | 23 ++++++++++++++++------- 1 file changed, 16 insertions(+), 7 deletions(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/math-emu/math_efp.c b/arch/powerpc/math-emu/math_efp.c index 59835c625dc6..ecdf35d8cb00 100644 --- a/arch/powerpc/math-emu/math_efp.c +++ b/arch/powerpc/math-emu/math_efp.c @@ -680,7 +680,8 @@ int speround_handler(struct pt_regs *regs) { union dw_union fgpr; int s_lo, s_hi; - unsigned long speinsn, type, fc; + int lo_inexact, hi_inexact; + unsigned long speinsn, type, fc, fptype; if (get_user(speinsn, (unsigned int __user *) regs->nip)) return -EFAULT; @@ -693,8 +694,12 @@ int speround_handler(struct pt_regs *regs) __FPU_FPSCR = mfspr(SPRN_SPEFSCR); pr_debug("speinsn:%08lx spefscr:%08lx\n", speinsn, __FPU_FPSCR); + fptype = (speinsn >> 5) & 0x7; + /* No need to round if the result is exact */ - if (!(__FPU_FPSCR & FP_EX_INEXACT)) + lo_inexact = __FPU_FPSCR & (SPEFSCR_FG | SPEFSCR_FX); + hi_inexact = __FPU_FPSCR & (SPEFSCR_FGH | SPEFSCR_FXH); + if (!(lo_inexact || (hi_inexact && fptype == VCT))) return 0; fc = (speinsn >> 21) & 0x1f; @@ -705,7 +710,7 @@ int speround_handler(struct pt_regs *regs) pr_debug("round fgpr: %08x %08x\n", fgpr.wp[0], fgpr.wp[1]); - switch ((speinsn >> 5) & 0x7) { + switch (fptype) { /* Since SPE instructions on E500 core can handle round to nearest * and round toward zero with IEEE-754 complied, we just need * to handle round toward +Inf and round toward -Inf by software. @@ -728,11 +733,15 @@ int speround_handler(struct pt_regs *regs) case VCT: if (FP_ROUNDMODE == FP_RND_PINF) { - if (!s_lo) fgpr.wp[1]++; /* Z_low > 0, choose Z1 */ - if (!s_hi) fgpr.wp[0]++; /* Z_high word > 0, choose Z1 */ + if (lo_inexact && !s_lo) + fgpr.wp[1]++; /* Z_low > 0, choose Z1 */ + if (hi_inexact && !s_hi) + fgpr.wp[0]++; /* Z_high word > 0, choose Z1 */ } else { /* round to -Inf */ - if (s_lo) fgpr.wp[1]++; /* Z_low < 0, choose Z2 */ - if (s_hi) fgpr.wp[0]++; /* Z_high < 0, choose Z2 */ + if (lo_inexact && s_lo) + fgpr.wp[1]++; /* Z_low < 0, choose Z2 */ + if (hi_inexact && s_hi) + fgpr.wp[0]++; /* Z_high < 0, choose Z2 */ } break; -- cgit v1.2.3 From 28fbf1d540920ad6722fa6ac15237a307932bc9b Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Mon, 4 Nov 2013 16:54:46 +0000 Subject: powerpc: fix e500 SPE float to integer and fixed-point conversions The e500 SPE floating-point emulation code has several problems in how it handles conversions to integer and fixed-point fractional types. There are the following 20 relevant instructions. These can convert to signed or unsigned 32-bit integers, either rounding towards zero (as correct for C casts from floating-point to integer) or according to the current rounding mode, or to signed or unsigned 32-bit fixed-point values (values in the range [-1, 1) or [0, 1)). For conversion from double precision there are also instructions to convert to 64-bit integers, rounding towards zero, although as far as I know those instructions are completely theoretical (they are only defined for implementations that support both SPE and classic 64-bit, and I'm not aware of any such hardware even though the architecture definition permits that combination). #define EFSCTUI 0x2d4 #define EFSCTSI 0x2d5 #define EFSCTUF 0x2d6 #define EFSCTSF 0x2d7 #define EFSCTUIZ 0x2d8 #define EFSCTSIZ 0x2da #define EVFSCTUI 0x294 #define EVFSCTSI 0x295 #define EVFSCTUF 0x296 #define EVFSCTSF 0x297 #define EVFSCTUIZ 0x298 #define EVFSCTSIZ 0x29a #define EFDCTUIDZ 0x2ea #define EFDCTSIDZ 0x2eb #define EFDCTUI 0x2f4 #define EFDCTSI 0x2f5 #define EFDCTUF 0x2f6 #define EFDCTSF 0x2f7 #define EFDCTUIZ 0x2f8 #define EFDCTSIZ 0x2fa The emulation code, for the instructions that come in variants rounding either towards zero or according to the current rounding direction, uses "if (func & 0x4)" as a condition for using _FP_ROUND (otherwise _FP_ROUND_ZERO is used). The condition is correct, but the code it controls isn't. Whether _FP_ROUND or _FP_ROUND_ZERO is used makes no difference, as the effect of those soft-fp macros is to round an intermediate floating-point result using the low three bits (the last one sticky) of the working format. As these operations are dealing with a freshly unpacked floating-point input, those low bits are zero and no rounding occurs. The emulation code then uses the FP_TO_INT_* macros for the actual integer conversion, with the effect of always rounding towards zero; for rounding according to the current rounding direction, it should be using FP_TO_INT_ROUND_*. The instructions in question have semantics defined (in the Power ISA documents) for out-of-range values and NaNs: out-of-range values saturate and NaNs are converted to zero. The emulation does nothing to follow those semantics for NaNs (the soft-fp handling is to treat them as infinities), and messes up the saturation semantics. For single-precision conversion to integers, (((func & 0x3) != 0) || SB_s) is the condition used for doing a signed conversion. The first part is correct, but the second isn't: negative numbers should result in saturation to 0 when converted to unsigned. Double-precision conversion to 64-bit integers correctly uses ((func & 0x1) == 0). Double-precision conversion to 32-bit integers uses (((func & 0x3) != 0) || DB_s), with correct first part and incorrect second part. And vector float conversion to integers uses (((func & 0x3) != 0) || SB0_s) (and similar for the other vector element), where the sign bit check is again wrong. The incorrect handling of negative numbers converted to unsigned was introduced in commit afc0a07d4a283599ac3a6a31d7454e9baaeccca0. The rationale given there was a C testcase with cast from float to unsigned int. Conversion of out-of-range floating-point numbers to integer types in C is undefined behavior in the base standard, defined in Annex F to produce an unspecified value. That is, the C testcase used to justify that patch is incorrect - there is no ISO C requirement for a particular value resulting from this conversion - and in any case, the correct semantics for such emulation are the semantics for the instruction (unsigned saturation, which is what it does in hardware when the emulation is disabled). The conversion to fixed-point values has its own problems. That code doesn't try to do a full emulation; it relies on the trap handler only being called for arguments that are infinities, NaNs, subnormal or out of range. That's fine, but the logic ((vb.wp[1] >> 23) == 0xff && ((vb.wp[1] & 0x7fffff) > 0)) for NaN detection won't detect negative NaNs as being NaNs (the same applies for the double-precision case), and subnormals are mapped to 0 rather than respecting the rounding mode; the code should also explicitly raise the "invalid" exception. The code for vectors works by executing the scalar float instruction with the trapping disabled, meaning at least subnormals won't be handled correctly. As well as all those problems in the main emulation code, the rounding handler - used to emulate rounding upward and downward when not supported in hardware and when no higher priority exception occurred - has its own problems. * It gets called in some cases even for the instructions rounding to zero, and then acts according to the current rounding mode when it should just leave alone the truncated result provided by hardware. * It presumes that the result is a single-precision, double-precision or single-precision vector as appropriate for the instruction type, determines the sign of the result accordingly, and then adjusts the result based on that sign and the rounding mode. - In the single-precision cases at least the sign determination for an integer result is the same as for a floating-point result; in the double-precision case, converted to 32-bit integer or fixed point, the sign of a double-precision value is in the high part of the register but it's the low part of the register that has the result of the conversion. - If the result is unsigned fixed-point, its sign may be wrongly determined as negative (does not actually cause problems, because inexact unsigned fixed-point results with the high bit set can only appear when converting from double, in which case the sign determination is instead wrongly using the high part of the register). - If the sign of the result is correctly determined as negative, any adjustment required to change the truncated result to one correct for the rounding mode should be in the opposite direction for two's-complement integers as for sign-magnitude floating-point values. - And if the integer result is zero, the correct sign can only be determined by examining the original operand, and not at all (as far as I can tell) if the operand and result are the same register. This patch fixes all these problems (as far as possible, given the inability to determine the correct sign in the rounding handler when the truncated result is 0, the conversion is to a signed type and the truncated result has overwritten the original operand). Conversion to fixed-point now uses full emulation, and does not use "asm" in the vector case; the semantics are exactly those of converting to integer according to the current rounding direction, once the exponent has been adjusted, so the code makes such an adjustment then uses the FP_TO_INT_ROUND macros. The testcase I used for verifying that the instructions (other than the theoretical conversions to 64-bit integers) produce the correct results is at . Signed-off-by: Joseph Myers Signed-off-by: Scott Wood --- arch/powerpc/math-emu/math_efp.c | 263 ++++++++++++++++++++++++++++----------- 1 file changed, 188 insertions(+), 75 deletions(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/math-emu/math_efp.c b/arch/powerpc/math-emu/math_efp.c index ecdf35d8cb00..01a0abb94dd6 100644 --- a/arch/powerpc/math-emu/math_efp.c +++ b/arch/powerpc/math-emu/math_efp.c @@ -275,21 +275,13 @@ int do_spe_mathemu(struct pt_regs *regs) case EFSCTSF: case EFSCTUF: - if (!((vb.wp[1] >> 23) == 0xff && ((vb.wp[1] & 0x7fffff) > 0))) { - /* NaN */ - if (((vb.wp[1] >> 23) & 0xff) == 0) { - /* denorm */ - vc.wp[1] = 0x0; - } else if ((vb.wp[1] >> 31) == 0) { - /* positive normal */ - vc.wp[1] = (func == EFSCTSF) ? - 0x7fffffff : 0xffffffff; - } else { /* negative normal */ - vc.wp[1] = (func == EFSCTSF) ? - 0x80000000 : 0x0; - } - } else { /* rB is NaN */ - vc.wp[1] = 0x0; + if (SB_c == FP_CLS_NAN) { + vc.wp[1] = 0; + FP_SET_EXCEPTION(FP_EX_INVALID); + } else { + SB_e += (func == EFSCTSF ? 31 : 32); + FP_TO_INT_ROUND_S(vc.wp[1], SB, 32, + (func == EFSCTSF)); } goto update_regs; @@ -306,16 +298,25 @@ int do_spe_mathemu(struct pt_regs *regs) } case EFSCTSI: - case EFSCTSIZ: case EFSCTUI: + if (SB_c == FP_CLS_NAN) { + vc.wp[1] = 0; + FP_SET_EXCEPTION(FP_EX_INVALID); + } else { + FP_TO_INT_ROUND_S(vc.wp[1], SB, 32, + ((func & 0x3) != 0)); + } + goto update_regs; + + case EFSCTSIZ: case EFSCTUIZ: - if (func & 0x4) { - _FP_ROUND(1, SB); + if (SB_c == FP_CLS_NAN) { + vc.wp[1] = 0; + FP_SET_EXCEPTION(FP_EX_INVALID); } else { - _FP_ROUND_ZERO(1, SB); + FP_TO_INT_S(vc.wp[1], SB, 32, + ((func & 0x3) != 0)); } - FP_TO_INT_S(vc.wp[1], SB, 32, - (((func & 0x3) != 0) || SB_s)); goto update_regs; default: @@ -404,22 +405,13 @@ cmp_s: case EFDCTSF: case EFDCTUF: - if (!((vb.wp[0] >> 20) == 0x7ff && - ((vb.wp[0] & 0xfffff) > 0 || (vb.wp[1] > 0)))) { - /* not a NaN */ - if (((vb.wp[0] >> 20) & 0x7ff) == 0) { - /* denorm */ - vc.wp[1] = 0x0; - } else if ((vb.wp[0] >> 31) == 0) { - /* positive normal */ - vc.wp[1] = (func == EFDCTSF) ? - 0x7fffffff : 0xffffffff; - } else { /* negative normal */ - vc.wp[1] = (func == EFDCTSF) ? - 0x80000000 : 0x0; - } - } else { /* NaN */ - vc.wp[1] = 0x0; + if (DB_c == FP_CLS_NAN) { + vc.wp[1] = 0; + FP_SET_EXCEPTION(FP_EX_INVALID); + } else { + DB_e += (func == EFDCTSF ? 31 : 32); + FP_TO_INT_ROUND_D(vc.wp[1], DB, 32, + (func == EFDCTSF)); } goto update_regs; @@ -437,21 +429,35 @@ cmp_s: case EFDCTUIDZ: case EFDCTSIDZ: - _FP_ROUND_ZERO(2, DB); - FP_TO_INT_D(vc.dp[0], DB, 64, ((func & 0x1) == 0)); + if (DB_c == FP_CLS_NAN) { + vc.dp[0] = 0; + FP_SET_EXCEPTION(FP_EX_INVALID); + } else { + FP_TO_INT_D(vc.dp[0], DB, 64, + ((func & 0x1) == 0)); + } goto update_regs; case EFDCTUI: case EFDCTSI: + if (DB_c == FP_CLS_NAN) { + vc.wp[1] = 0; + FP_SET_EXCEPTION(FP_EX_INVALID); + } else { + FP_TO_INT_ROUND_D(vc.wp[1], DB, 32, + ((func & 0x3) != 0)); + } + goto update_regs; + case EFDCTUIZ: case EFDCTSIZ: - if (func & 0x4) { - _FP_ROUND(2, DB); + if (DB_c == FP_CLS_NAN) { + vc.wp[1] = 0; + FP_SET_EXCEPTION(FP_EX_INVALID); } else { - _FP_ROUND_ZERO(2, DB); + FP_TO_INT_D(vc.wp[1], DB, 32, + ((func & 0x3) != 0)); } - FP_TO_INT_D(vc.wp[1], DB, 32, - (((func & 0x3) != 0) || DB_s)); goto update_regs; default: @@ -556,37 +562,60 @@ cmp_d: cmp = -1; goto cmp_vs; - case EVFSCTSF: - __asm__ __volatile__ ("mtspr 512, %4\n" - "efsctsf %0, %2\n" - "efsctsf %1, %3\n" - : "=r" (vc.wp[0]), "=r" (vc.wp[1]) - : "r" (vb.wp[0]), "r" (vb.wp[1]), "r" (0)); - goto update_regs; - case EVFSCTUF: - __asm__ __volatile__ ("mtspr 512, %4\n" - "efsctuf %0, %2\n" - "efsctuf %1, %3\n" - : "=r" (vc.wp[0]), "=r" (vc.wp[1]) - : "r" (vb.wp[0]), "r" (vb.wp[1]), "r" (0)); + case EVFSCTSF: + if (SB0_c == FP_CLS_NAN) { + vc.wp[0] = 0; + FP_SET_EXCEPTION(FP_EX_INVALID); + } else { + SB0_e += (func == EVFSCTSF ? 31 : 32); + FP_TO_INT_ROUND_S(vc.wp[0], SB0, 32, + (func == EVFSCTSF)); + } + if (SB1_c == FP_CLS_NAN) { + vc.wp[1] = 0; + FP_SET_EXCEPTION(FP_EX_INVALID); + } else { + SB1_e += (func == EVFSCTSF ? 31 : 32); + FP_TO_INT_ROUND_S(vc.wp[1], SB1, 32, + (func == EVFSCTSF)); + } goto update_regs; case EVFSCTUI: case EVFSCTSI: + if (SB0_c == FP_CLS_NAN) { + vc.wp[0] = 0; + FP_SET_EXCEPTION(FP_EX_INVALID); + } else { + FP_TO_INT_ROUND_S(vc.wp[0], SB0, 32, + ((func & 0x3) != 0)); + } + if (SB1_c == FP_CLS_NAN) { + vc.wp[1] = 0; + FP_SET_EXCEPTION(FP_EX_INVALID); + } else { + FP_TO_INT_ROUND_S(vc.wp[1], SB1, 32, + ((func & 0x3) != 0)); + } + goto update_regs; + case EVFSCTUIZ: case EVFSCTSIZ: - if (func & 0x4) { - _FP_ROUND(1, SB0); - _FP_ROUND(1, SB1); + if (SB0_c == FP_CLS_NAN) { + vc.wp[0] = 0; + FP_SET_EXCEPTION(FP_EX_INVALID); } else { - _FP_ROUND_ZERO(1, SB0); - _FP_ROUND_ZERO(1, SB1); + FP_TO_INT_S(vc.wp[0], SB0, 32, + ((func & 0x3) != 0)); + } + if (SB1_c == FP_CLS_NAN) { + vc.wp[1] = 0; + FP_SET_EXCEPTION(FP_EX_INVALID); + } else { + FP_TO_INT_S(vc.wp[1], SB1, 32, + ((func & 0x3) != 0)); } - FP_TO_INT_S(vc.wp[0], SB0, 32, - (((func & 0x3) != 0) || SB0_s)); - FP_TO_INT_S(vc.wp[1], SB1, 32, - (((func & 0x3) != 0) || SB1_s)); goto update_regs; default: @@ -681,14 +710,16 @@ int speround_handler(struct pt_regs *regs) union dw_union fgpr; int s_lo, s_hi; int lo_inexact, hi_inexact; - unsigned long speinsn, type, fc, fptype; + int fp_result; + unsigned long speinsn, type, fb, fc, fptype, func; if (get_user(speinsn, (unsigned int __user *) regs->nip)) return -EFAULT; if ((speinsn >> 26) != 4) return -EINVAL; /* not an spe instruction */ - type = insn_type(speinsn & 0x7ff); + func = speinsn & 0x7ff; + type = insn_type(func); if (type == XCR) return -ENOSYS; __FPU_FPSCR = mfspr(SPRN_SPEFSCR); @@ -708,6 +739,65 @@ int speround_handler(struct pt_regs *regs) fgpr.wp[0] = current->thread.evr[fc]; fgpr.wp[1] = regs->gpr[fc]; + fb = (speinsn >> 11) & 0x1f; + switch (func) { + case EFSCTUIZ: + case EFSCTSIZ: + case EVFSCTUIZ: + case EVFSCTSIZ: + case EFDCTUIDZ: + case EFDCTSIDZ: + case EFDCTUIZ: + case EFDCTSIZ: + /* + * These instructions always round to zero, + * independent of the rounding mode. + */ + return 0; + + case EFSCTUI: + case EFSCTUF: + case EVFSCTUI: + case EVFSCTUF: + case EFDCTUI: + case EFDCTUF: + fp_result = 0; + s_lo = 0; + s_hi = 0; + break; + + case EFSCTSI: + case EFSCTSF: + fp_result = 0; + /* Recover the sign of a zero result if possible. */ + if (fgpr.wp[1] == 0) + s_lo = regs->gpr[fb] & SIGN_BIT_S; + break; + + case EVFSCTSI: + case EVFSCTSF: + fp_result = 0; + /* Recover the sign of a zero result if possible. */ + if (fgpr.wp[1] == 0) + s_lo = regs->gpr[fb] & SIGN_BIT_S; + if (fgpr.wp[0] == 0) + s_hi = current->thread.evr[fb] & SIGN_BIT_S; + break; + + case EFDCTSI: + case EFDCTSF: + fp_result = 0; + s_hi = s_lo; + /* Recover the sign of a zero result if possible. */ + if (fgpr.wp[1] == 0) + s_hi = current->thread.evr[fb] & SIGN_BIT_S; + break; + + default: + fp_result = 1; + break; + } + pr_debug("round fgpr: %08x %08x\n", fgpr.wp[0], fgpr.wp[1]); switch (fptype) { @@ -719,15 +809,30 @@ int speround_handler(struct pt_regs *regs) if ((FP_ROUNDMODE) == FP_RND_PINF) { if (!s_lo) fgpr.wp[1]++; /* Z > 0, choose Z1 */ } else { /* round to -Inf */ - if (s_lo) fgpr.wp[1]++; /* Z < 0, choose Z2 */ + if (s_lo) { + if (fp_result) + fgpr.wp[1]++; /* Z < 0, choose Z2 */ + else + fgpr.wp[1]--; /* Z < 0, choose Z2 */ + } } break; case DPFP: if (FP_ROUNDMODE == FP_RND_PINF) { - if (!s_hi) fgpr.dp[0]++; /* Z > 0, choose Z1 */ + if (!s_hi) { + if (fp_result) + fgpr.dp[0]++; /* Z > 0, choose Z1 */ + else + fgpr.wp[1]++; /* Z > 0, choose Z1 */ + } } else { /* round to -Inf */ - if (s_hi) fgpr.dp[0]++; /* Z < 0, choose Z2 */ + if (s_hi) { + if (fp_result) + fgpr.dp[0]++; /* Z < 0, choose Z2 */ + else + fgpr.wp[1]--; /* Z < 0, choose Z2 */ + } } break; @@ -738,10 +843,18 @@ int speround_handler(struct pt_regs *regs) if (hi_inexact && !s_hi) fgpr.wp[0]++; /* Z_high word > 0, choose Z1 */ } else { /* round to -Inf */ - if (lo_inexact && s_lo) - fgpr.wp[1]++; /* Z_low < 0, choose Z2 */ - if (hi_inexact && s_hi) - fgpr.wp[0]++; /* Z_high < 0, choose Z2 */ + if (lo_inexact && s_lo) { + if (fp_result) + fgpr.wp[1]++; /* Z_low < 0, choose Z2 */ + else + fgpr.wp[1]--; /* Z_low < 0, choose Z2 */ + } + if (hi_inexact && s_hi) { + if (fp_result) + fgpr.wp[0]++; /* Z_high < 0, choose Z2 */ + else + fgpr.wp[0]--; /* Z_high < 0, choose Z2 */ + } } break; -- cgit v1.2.3 From 01c9ccee3c3051d0a37af9af2938a15a06448964 Mon Sep 17 00:00:00 2001 From: Joseph Myers Date: Mon, 4 Nov 2013 16:55:05 +0000 Subject: powerpc: fix e500 SPE float SIGFPE generation The e500 SPE floating-point emulation code is called from SPEFloatingPointException and SPEFloatingPointRoundException in arch/powerpc/kernel/traps.c. Those functions have support for generating SIGFPE, but do_spe_mathemu and speround_handler don't generate a return value to indicate that this should be done. Such a return value should depend on whether an exception is raised that has been set via prctl to generate SIGFPE. This patch adds the relevant logic in these functions so that SIGFPE is generated as expected by the glibc testsuite. Signed-off-by: Joseph Myers Signed-off-by: Scott Wood --- arch/powerpc/math-emu/math_efp.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'arch/powerpc') diff --git a/arch/powerpc/math-emu/math_efp.c b/arch/powerpc/math-emu/math_efp.c index 01a0abb94dd6..28337c9709ae 100644 --- a/arch/powerpc/math-emu/math_efp.c +++ b/arch/powerpc/math-emu/math_efp.c @@ -20,6 +20,7 @@ */ #include +#include #include #include @@ -691,6 +692,23 @@ update_regs: pr_debug("va: %08x %08x\n", va.wp[0], va.wp[1]); pr_debug("vb: %08x %08x\n", vb.wp[0], vb.wp[1]); + if (current->thread.fpexc_mode & PR_FP_EXC_SW_ENABLE) { + if ((FP_CUR_EXCEPTIONS & FP_EX_DIVZERO) + && (current->thread.fpexc_mode & PR_FP_EXC_DIV)) + return 1; + if ((FP_CUR_EXCEPTIONS & FP_EX_OVERFLOW) + && (current->thread.fpexc_mode & PR_FP_EXC_OVF)) + return 1; + if ((FP_CUR_EXCEPTIONS & FP_EX_UNDERFLOW) + && (current->thread.fpexc_mode & PR_FP_EXC_UND)) + return 1; + if ((FP_CUR_EXCEPTIONS & FP_EX_INEXACT) + && (current->thread.fpexc_mode & PR_FP_EXC_RES)) + return 1; + if ((FP_CUR_EXCEPTIONS & FP_EX_INVALID) + && (current->thread.fpexc_mode & PR_FP_EXC_INV)) + return 1; + } return 0; illegal: @@ -867,6 +885,8 @@ int speround_handler(struct pt_regs *regs) pr_debug(" to fgpr: %08x %08x\n", fgpr.wp[0], fgpr.wp[1]); + if (current->thread.fpexc_mode & PR_FP_EXC_SW_ENABLE) + return (current->thread.fpexc_mode & PR_FP_EXC_RES) ? 1 : 0; return 0; } -- cgit v1.2.3 From 9667a36486cf872029fc2a884ba9e787c6c854c9 Mon Sep 17 00:00:00 2001 From: Zhao Qiang Date: Thu, 7 Nov 2013 10:29:28 +0800 Subject: powerpc/p1010rdb:update dts to adapt to both old and new p1010rdb P1010rdb-pa and p1010rdb-pb have different phy interrupts. So update dts to adapt to both p1010rdb-pa and p1010rdb-pb. Signed-off-by: Shengzhou Liu Signed-off-by: Zhao Qiang Signed-off-by: Scott Wood --- arch/powerpc/boot/dts/p1010rdb-pa.dts | 35 ++++++++++++ arch/powerpc/boot/dts/p1010rdb-pa_36b.dts | 58 ++++++++++++++++++++ arch/powerpc/boot/dts/p1010rdb-pb.dts | 35 ++++++++++++ arch/powerpc/boot/dts/p1010rdb-pb_36b.dts | 58 ++++++++++++++++++++ arch/powerpc/boot/dts/p1010rdb.dts | 66 ----------------------- arch/powerpc/boot/dts/p1010rdb.dtsi | 3 -- arch/powerpc/boot/dts/p1010rdb_32b.dtsi | 79 +++++++++++++++++++++++++++ arch/powerpc/boot/dts/p1010rdb_36b.dts | 89 ------------------------------- arch/powerpc/boot/dts/p1010rdb_36b.dtsi | 79 +++++++++++++++++++++++++++ 9 files changed, 344 insertions(+), 158 deletions(-) create mode 100644 arch/powerpc/boot/dts/p1010rdb-pa.dts create mode 100644 arch/powerpc/boot/dts/p1010rdb-pa_36b.dts create mode 100644 arch/powerpc/boot/dts/p1010rdb-pb.dts create mode 100644 arch/powerpc/boot/dts/p1010rdb-pb_36b.dts delete mode 100644 arch/powerpc/boot/dts/p1010rdb.dts create mode 100644 arch/powerpc/boot/dts/p1010rdb_32b.dtsi delete mode 100644 arch/powerpc/boot/dts/p1010rdb_36b.dts create mode 100644 arch/powerpc/boot/dts/p1010rdb_36b.dtsi (limited to 'arch/powerpc') diff --git a/arch/powerpc/boot/dts/p1010rdb-pa.dts b/arch/powerpc/boot/dts/p1010rdb-pa.dts new file mode 100644 index 000000000000..8a74700039f3 --- /dev/null +++ b/arch/powerpc/boot/dts/p1010rdb-pa.dts @@ -0,0 +1,35 @@ +/* + * P1010 RDB Device Tree Source + * + * Copyright 2011 Freescale Semiconductor Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +/include/ "fsl/p1010si-pre.dtsi" + +/ { + model = "fsl,P1010RDB"; + compatible = "fsl,P1010RDB"; + + /include/ "p1010rdb_32b.dtsi" +}; + +/include/ "p1010rdb.dtsi" + +&phy0 { + interrupts = <3 1 0 0>; +}; + +&phy1 { + interrupts = <2 1 0 0>; +}; + +&phy2 { + interrupts = <2 1 0 0>; +}; + +/include/ "fsl/p1010si-post.dtsi" diff --git a/arch/powerpc/boot/dts/p1010rdb-pa_36b.dts b/arch/powerpc/boot/dts/p1010rdb-pa_36b.dts new file mode 100644 index 000000000000..2004ee78cabe --- /dev/null +++ b/arch/powerpc/boot/dts/p1010rdb-pa_36b.dts @@ -0,0 +1,58 @@ +/* + * P1010 RDB Device Tree Source (36-bit address map) + * + * Copyright 2011 Freescale Semiconductor Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of Freescale Semiconductor nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") as published by the Free Software + * Foundation, either version 2 of that License or (at your option) any + * later version. + * + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/include/ "fsl/p1010si-pre.dtsi" + +/ { + model = "fsl,P1010RDB"; + compatible = "fsl,P1010RDB"; + + /include/ "p1010rdb_36b.dtsi" +}; + +/include/ "p1010rdb.dtsi" + +&phy0 { + interrupts = <3 1 0 0>; +}; + +&phy1 { + interrupts = <2 1 0 0>; +}; + +&phy2 { + interrupts = <2 1 0 0>; +}; + +/include/ "fsl/p1010si-post.dtsi" diff --git a/arch/powerpc/boot/dts/p1010rdb-pb.dts b/arch/powerpc/boot/dts/p1010rdb-pb.dts new file mode 100644 index 000000000000..6eeb7d3185be --- /dev/null +++ b/arch/powerpc/boot/dts/p1010rdb-pb.dts @@ -0,0 +1,35 @@ +/* + * P1010 RDB Device Tree Source + * + * Copyright 2011 Freescale Semiconductor Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +/include/ "fsl/p1010si-pre.dtsi" + +/ { + model = "fsl,P1010RDB-PB"; + compatible = "fsl,P1010RDB-PB"; + + /include/ "p1010rdb_32b.dtsi" +}; + +/include/ "p1010rdb.dtsi" + +&phy0 { + interrupts = <0 1 0 0>; +}; + +&phy1 { + interrupts = <2 1 0 0>; +}; + +&phy2 { + interrupts = <1 1 0 0>; +}; + +/include/ "fsl/p1010si-post.dtsi" diff --git a/arch/powerpc/boot/dts/p1010rdb-pb_36b.dts b/arch/powerpc/boot/dts/p1010rdb-pb_36b.dts new file mode 100644 index 000000000000..7ab3c907b326 --- /dev/null +++ b/arch/powerpc/boot/dts/p1010rdb-pb_36b.dts @@ -0,0 +1,58 @@ +/* + * P1010 RDB Device Tree Source (36-bit address map) + * + * Copyright 2011 Freescale Semiconductor Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of Freescale Semiconductor nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") as published by the Free Software + * Foundation, either version 2 of that License or (at your option) any + * later version. + * + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/include/ "fsl/p1010si-pre.dtsi" + +/ { + model = "fsl,P1010RDB-PB"; + compatible = "fsl,P1010RDB-PB"; + + /include/ "p1010rdb_36b.dtsi" +}; + +/include/ "p1010rdb.dtsi" + +&phy0 { + interrupts = <0 1 0 0>; +}; + +&phy1 { + interrupts = <2 1 0 0>; +}; + +&phy2 { + interrupts = <1 1 0 0>; +}; + +/include/ "fsl/p1010si-post.dtsi" diff --git a/arch/powerpc/boot/dts/p1010rdb.dts b/arch/powerpc/boot/dts/p1010rdb.dts deleted file mode 100644 index b868d22984e9..000000000000 --- a/arch/powerpc/boot/dts/p1010rdb.dts +++ /dev/null @@ -1,66 +0,0 @@ -/* - * P1010 RDB Device Tree Source - * - * Copyright 2011 Freescale Semiconductor Inc. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - */ - -/include/ "fsl/p1010si-pre.dtsi" - -/ { - model = "fsl,P1010RDB"; - compatible = "fsl,P1010RDB"; - - memory { - device_type = "memory"; - }; - - board_ifc: ifc: ifc@ffe1e000 { - /* NOR, NAND Flashes and CPLD on board */ - ranges = <0x0 0x0 0x0 0xee000000 0x02000000 - 0x1 0x0 0x0 0xff800000 0x00010000 - 0x3 0x0 0x0 0xffb00000 0x00000020>; - reg = <0x0 0xffe1e000 0 0x2000>; - }; - - board_soc: soc: soc@ffe00000 { - ranges = <0x0 0x0 0xffe00000 0x100000>; - }; - - pci0: pcie@ffe09000 { - reg = <0 0xffe09000 0 0x1000>; - ranges = <0x2000000 0x0 0xa0000000 0 0xa0000000 0x0 0x20000000 - 0x1000000 0x0 0x00000000 0 0xffc10000 0x0 0x10000>; - pcie@0 { - ranges = <0x2000000 0x0 0xa0000000 - 0x2000000 0x0 0xa0000000 - 0x0 0x20000000 - - 0x1000000 0x0 0x0 - 0x1000000 0x0 0x0 - 0x0 0x100000>; - }; - }; - - pci1: pcie@ffe0a000 { - reg = <0 0xffe0a000 0 0x1000>; - ranges = <0x2000000 0x0 0x80000000 0 0x80000000 0x0 0x20000000 - 0x1000000 0x0 0x00000000 0 0xffc00000 0x0 0x10000>; - pcie@0 { - ranges = <0x2000000 0x0 0x80000000 - 0x2000000 0x0 0x80000000 - 0x0 0x20000000 - - 0x1000000 0x0 0x0 - 0x1000000 0x0 0x0 - 0x0 0x100000>; - }; - }; -}; - -/include/ "p1010rdb.dtsi" -/include/ "fsl/p1010si-post.dtsi" diff --git a/arch/powerpc/boot/dts/p1010rdb.dtsi b/arch/powerpc/boot/dts/p1010rdb.dtsi index ec7c27a64671..48533990ae82 100644 --- a/arch/powerpc/boot/dts/p1010rdb.dtsi +++ b/arch/powerpc/boot/dts/p1010rdb.dtsi @@ -193,17 +193,14 @@ mdio@24000 { phy0: ethernet-phy@0 { - interrupts = <3 1 0 0>; reg = <0x1>; }; phy1: ethernet-phy@1 { - interrupts = <2 1 0 0>; reg = <0x0>; }; phy2: ethernet-phy@2 { - interrupts = <2 1 0 0>; reg = <0x2>; }; diff --git a/arch/powerpc/boot/dts/p1010rdb_32b.dtsi b/arch/powerpc/boot/dts/p1010rdb_32b.dtsi new file mode 100644 index 000000000000..fdc19aab2f70 --- /dev/null +++ b/arch/powerpc/boot/dts/p1010rdb_32b.dtsi @@ -0,0 +1,79 @@ +/* + * P1010 RDB Device Tree Source stub (no addresses or top-level ranges) + * + * Copyright 2013 Freescale Semiconductor Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of Freescale Semiconductor nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") as published by the Free Software + * Foundation, either version 2 of that License or (at your option) any + * later version. + * + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +memory { + device_type = "memory"; +}; + +board_ifc: ifc: ifc@ffe1e000 { + /* NOR, NAND Flashes and CPLD on board */ + ranges = <0x0 0x0 0x0 0xee000000 0x02000000 + 0x1 0x0 0x0 0xff800000 0x00010000 + 0x3 0x0 0x0 0xffb00000 0x00000020>; + reg = <0x0 0xffe1e000 0 0x2000>; +}; + +board_soc: soc: soc@ffe00000 { + ranges = <0x0 0x0 0xffe00000 0x100000>; +}; + +pci0: pcie@ffe09000 { + reg = <0 0xffe09000 0 0x1000>; + ranges = <0x2000000 0x0 0xa0000000 0 0xa0000000 0x0 0x20000000 + 0x1000000 0x0 0x00000000 0 0xffc10000 0x0 0x10000>; + pcie@0 { + ranges = <0x2000000 0x0 0xa0000000 + 0x2000000 0x0 0xa0000000 + 0x0 0x20000000 + + 0x1000000 0x0 0x0 + 0x1000000 0x0 0x0 + 0x0 0x100000>; + }; +}; + +pci1: pcie@ffe0a000 { + reg = <0 0xffe0a000 0 0x1000>; + ranges = <0x2000000 0x0 0x80000000 0 0x80000000 0x0 0x20000000 + 0x1000000 0x0 0x00000000 0 0xffc00000 0x0 0x10000>; + pcie@0 { + ranges = <0x2000000 0x0 0x80000000 + 0x2000000 0x0 0x80000000 + 0x0 0x20000000 + + 0x1000000 0x0 0x0 + 0x1000000 0x0 0x0 + 0x0 0x100000>; + }; +}; diff --git a/arch/powerpc/boot/dts/p1010rdb_36b.dts b/arch/powerpc/boot/dts/p1010rdb_36b.dts deleted file mode 100644 index 64776f4a4651..000000000000 --- a/arch/powerpc/boot/dts/p1010rdb_36b.dts +++ /dev/null @@ -1,89 +0,0 @@ -/* - * P1010 RDB Device Tree Source (36-bit address map) - * - * Copyright 2011 Freescale Semiconductor Inc. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * * Neither the name of Freescale Semiconductor nor the - * names of its contributors may be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * - * ALTERNATIVELY, this software may be distributed under the terms of the - * GNU General Public License ("GPL") as published by the Free Software - * Foundation, either version 2 of that License or (at your option) any - * later version. - * - * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY - * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY - * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -/include/ "fsl/p1010si-pre.dtsi" - -/ { - model = "fsl,P1010RDB"; - compatible = "fsl,P1010RDB"; - - memory { - device_type = "memory"; - }; - - board_ifc: ifc: ifc@fffe1e000 { - /* NOR, NAND Flashes and CPLD on board */ - ranges = <0x0 0x0 0xf 0xee000000 0x02000000 - 0x1 0x0 0xf 0xff800000 0x00010000 - 0x3 0x0 0xf 0xffb00000 0x00000020>; - reg = <0xf 0xffe1e000 0 0x2000>; - }; - - board_soc: soc: soc@fffe00000 { - ranges = <0x0 0xf 0xffe00000 0x100000>; - }; - - pci0: pcie@fffe09000 { - reg = <0xf 0xffe09000 0 0x1000>; - ranges = <0x2000000 0x0 0xc0000000 0xc 0x20000000 0x0 0x20000000 - 0x1000000 0x0 0x00000000 0xf 0xffc10000 0x0 0x10000>; - pcie@0 { - ranges = <0x2000000 0x0 0xc0000000 - 0x2000000 0x0 0xc0000000 - 0x0 0x20000000 - - 0x1000000 0x0 0x0 - 0x1000000 0x0 0x0 - 0x0 0x100000>; - }; - }; - - pci1: pcie@fffe0a000 { - reg = <0xf 0xffe0a000 0 0x1000>; - ranges = <0x2000000 0x0 0xc0000000 0xc 0x20000000 0x0 0x20000000 - 0x1000000 0x0 0x00000000 0xf 0xffc10000 0x0 0x10000>; - pcie@0 { - ranges = <0x2000000 0x0 0xc0000000 - 0x2000000 0x0 0xc0000000 - 0x0 0x20000000 - - 0x1000000 0x0 0x0 - 0x1000000 0x0 0x0 - 0x0 0x100000>; - }; - }; -}; - -/include/ "p1010rdb.dtsi" -/include/ "fsl/p1010si-post.dtsi" diff --git a/arch/powerpc/boot/dts/p1010rdb_36b.dtsi b/arch/powerpc/boot/dts/p1010rdb_36b.dtsi new file mode 100644 index 000000000000..de2fceed4f79 --- /dev/null +++ b/arch/powerpc/boot/dts/p1010rdb_36b.dtsi @@ -0,0 +1,79 @@ +/* + * P1010 RDB Device Tree Source stub (no addresses or top-level ranges) + * + * Copyright 2013 Freescale Semiconductor Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of Freescale Semiconductor nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") as published by the Free Software + * Foundation, either version 2 of that License or (at your option) any + * later version. + * + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +memory { + device_type = "memory"; +}; + +board_ifc: ifc: ifc@fffe1e000 { + /* NOR, NAND Flashes and CPLD on board */ + ranges = <0x0 0x0 0xf 0xee000000 0x02000000 + 0x1 0x0 0xf 0xff800000 0x00010000 + 0x3 0x0 0xf 0xffb00000 0x00000020>; + reg = <0xf 0xffe1e000 0 0x2000>; +}; + +board_soc: soc: soc@fffe00000 { + ranges = <0x0 0xf 0xffe00000 0x100000>; +}; + +pci0: pcie@fffe09000 { + reg = <0xf 0xffe09000 0 0x1000>; + ranges = <0x2000000 0x0 0xc0000000 0xc 0x20000000 0x0 0x20000000 + 0x1000000 0x0 0x00000000 0xf 0xffc10000 0x0 0x10000>; + pcie@0 { + ranges = <0x2000000 0x0 0xc0000000 + 0x2000000 0x0 0xc0000000 + 0x0 0x20000000 + + 0x1000000 0x0 0x0 + 0x1000000 0x0 0x0 + 0x0 0x100000>; + }; +}; + +pci1: pcie@fffe0a000 { + reg = <0xf 0xffe0a000 0 0x1000>; + ranges = <0x2000000 0x0 0xc0000000 0xc 0x20000000 0x0 0x20000000 + 0x1000000 0x0 0x00000000 0xf 0xffc10000 0x0 0x10000>; + pcie@0 { + ranges = <0x2000000 0x0 0xc0000000 + 0x2000000 0x0 0xc0000000 + 0x0 0x20000000 + + 0x1000000 0x0 0x0 + 0x1000000 0x0 0x0 + 0x0 0x100000>; + }; +}; -- cgit v1.2.3 From 0ff649ca50355352d4dbe3fcd7e6b3587d226d54 Mon Sep 17 00:00:00 2001 From: Zhao Qiang Date: Thu, 7 Nov 2013 10:29:29 +0800 Subject: powerpc/p1010rdb:update mtd of nand to adapt to both old and new p1010rdb P1010rdb-pa and p1010rdb-pb have different mtd of nand. So update dts to adapt to both p1010rdb-pa and p1010rdb-pb. Move the nand-mtd from p1010rdb.dtsi to p1010rdb-pa*.dts. Remove nand-mtd for p1010rdb-pb, whick will use mtdparts from u-boot instead of nand-mtd in device tree. Signed-off-by: Zhao Qiang Signed-off-by: Scott Wood --- arch/powerpc/boot/dts/p1010rdb-pa.dts | 14 +---- arch/powerpc/boot/dts/p1010rdb-pa.dtsi | 85 +++++++++++++++++++++++++++++++ arch/powerpc/boot/dts/p1010rdb-pa_36b.dts | 14 +---- arch/powerpc/boot/dts/p1010rdb.dtsi | 40 +-------------- 4 files changed, 88 insertions(+), 65 deletions(-) create mode 100644 arch/powerpc/boot/dts/p1010rdb-pa.dtsi (limited to 'arch/powerpc') diff --git a/arch/powerpc/boot/dts/p1010rdb-pa.dts b/arch/powerpc/boot/dts/p1010rdb-pa.dts index 8a74700039f3..767d4c032857 100644 --- a/arch/powerpc/boot/dts/p1010rdb-pa.dts +++ b/arch/powerpc/boot/dts/p1010rdb-pa.dts @@ -19,17 +19,5 @@ }; /include/ "p1010rdb.dtsi" - -&phy0 { - interrupts = <3 1 0 0>; -}; - -&phy1 { - interrupts = <2 1 0 0>; -}; - -&phy2 { - interrupts = <2 1 0 0>; -}; - +/include/ "p1010rdb-pa.dtsi" /include/ "fsl/p1010si-post.dtsi" diff --git a/arch/powerpc/boot/dts/p1010rdb-pa.dtsi b/arch/powerpc/boot/dts/p1010rdb-pa.dtsi new file mode 100644 index 000000000000..4c5a7bf6579f --- /dev/null +++ b/arch/powerpc/boot/dts/p1010rdb-pa.dtsi @@ -0,0 +1,85 @@ +/* + * P1010 RDB Device Tree Source stub (no addresses or top-level ranges) + * + * Copyright 2013 Freescale Semiconductor Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of Freescale Semiconductor nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") as published by the Free Software + * Foundation, either version 2 of that License or (at your option) any + * later version. + * + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +&ifc_nand { + partition@0 { + /* This location must not be altered */ + /* 1MB for u-boot Bootloader Image */ + reg = <0x0 0x00100000>; + label = "NAND U-Boot Image"; + read-only; + }; + + partition@100000 { + /* 1MB for DTB Image */ + reg = <0x00100000 0x00100000>; + label = "NAND DTB Image"; + }; + + partition@200000 { + /* 4MB for Linux Kernel Image */ + reg = <0x00200000 0x00400000>; + label = "NAND Linux Kernel Image"; + }; + + partition@600000 { + /* 4MB for Compressed Root file System Image */ + reg = <0x00600000 0x00400000>; + label = "NAND Compressed RFS Image"; + }; + + partition@a00000 { + /* 15MB for JFFS2 based Root file System */ + reg = <0x00a00000 0x00f00000>; + label = "NAND JFFS2 Root File System"; + }; + + partition@1900000 { + /* 7MB for User Area */ + reg = <0x01900000 0x00700000>; + label = "NAND User area"; + }; +}; + +&phy0 { + interrupts = <3 1 0 0>; +}; + +&phy1 { + interrupts = <2 1 0 0>; +}; + +&phy2 { + interrupts = <2 1 0 0>; +}; diff --git a/arch/powerpc/boot/dts/p1010rdb-pa_36b.dts b/arch/powerpc/boot/dts/p1010rdb-pa_36b.dts index 2004ee78cabe..3033371bc007 100644 --- a/arch/powerpc/boot/dts/p1010rdb-pa_36b.dts +++ b/arch/powerpc/boot/dts/p1010rdb-pa_36b.dts @@ -42,17 +42,5 @@ }; /include/ "p1010rdb.dtsi" - -&phy0 { - interrupts = <3 1 0 0>; -}; - -&phy1 { - interrupts = <2 1 0 0>; -}; - -&phy2 { - interrupts = <2 1 0 0>; -}; - +/include/ "p1010rdb-pa.dtsi" /include/ "fsl/p1010si-post.dtsi" diff --git a/arch/powerpc/boot/dts/p1010rdb.dtsi b/arch/powerpc/boot/dts/p1010rdb.dtsi index 48533990ae82..ea534efa790d 100644 --- a/arch/powerpc/boot/dts/p1010rdb.dtsi +++ b/arch/powerpc/boot/dts/p1010rdb.dtsi @@ -69,49 +69,11 @@ }; }; - nand@1,0 { + ifc_nand: nand@1,0 { #address-cells = <1>; #size-cells = <1>; compatible = "fsl,ifc-nand"; reg = <0x1 0x0 0x10000>; - - partition@0 { - /* This location must not be altered */ - /* 1MB for u-boot Bootloader Image */ - reg = <0x0 0x00100000>; - label = "NAND U-Boot Image"; - read-only; - }; - - partition@100000 { - /* 1MB for DTB Image */ - reg = <0x00100000 0x00100000>; - label = "NAND DTB Image"; - }; - - partition@200000 { - /* 4MB for Linux Kernel Image */ - reg = <0x00200000 0x00400000>; - label = "NAND Linux Kernel Image"; - }; - - partition@600000 { - /* 4MB for Compressed Root file System Image */ - reg = <0x00600000 0x00400000>; - label = "NAND Compressed RFS Image"; - }; - - partition@a00000 { - /* 15MB for JFFS2 based Root file System */ - reg = <0x00a00000 0x00f00000>; - label = "NAND JFFS2 Root File System"; - }; - - partition@1900000 { - /* 7MB for User Area */ - reg = <0x01900000 0x00700000>; - label = "NAND User area"; - }; }; cpld@3,0 { -- cgit v1.2.3 From 455d23a8908319fa7ad450e65e4f09afb45057a7 Mon Sep 17 00:00:00 2001 From: Kevin Hao Date: Thu, 7 Nov 2013 15:17:17 +0800 Subject: powerpc/85xx: don't init the mpic ipi for the SoC which has doorbell support It makes no sense to initialize the mpic ipi for the SoC which has doorbell support. So set the smp_85xx_ops.probe to NULL for this case. Since the smp_85xx_ops.probe is also used in function smp_85xx_setup_cpu() to check if we need to invoke mpic_setup_this_cpu(), we introduce a new setup_cpu function smp_85xx_basic_setup() to remove this dependency. Signed-off-by: Kevin Hao Signed-off-by: Scott Wood --- arch/powerpc/platforms/85xx/smp.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/platforms/85xx/smp.c b/arch/powerpc/platforms/85xx/smp.c index 393f975ab397..6382098d6f8d 100644 --- a/arch/powerpc/platforms/85xx/smp.c +++ b/arch/powerpc/platforms/85xx/smp.c @@ -389,15 +389,18 @@ static void mpc85xx_smp_machine_kexec(struct kimage *image) } #endif /* CONFIG_KEXEC */ -static void smp_85xx_setup_cpu(int cpu_nr) +static void smp_85xx_basic_setup(int cpu_nr) { - if (smp_85xx_ops.probe == smp_mpic_probe) - mpic_setup_this_cpu(); - if (cpu_has_feature(CPU_FTR_DBELL)) doorbell_setup_this_cpu(); } +static void smp_85xx_setup_cpu(int cpu_nr) +{ + mpic_setup_this_cpu(); + smp_85xx_basic_setup(cpu_nr); +} + static const struct of_device_id mpc85xx_smp_guts_ids[] = { { .compatible = "fsl,mpc8572-guts", }, { .compatible = "fsl,p1020-guts", }, @@ -412,13 +415,14 @@ void __init mpc85xx_smp_init(void) { struct device_node *np; - smp_85xx_ops.setup_cpu = smp_85xx_setup_cpu; np = of_find_node_by_type(NULL, "open-pic"); if (np) { smp_85xx_ops.probe = smp_mpic_probe; + smp_85xx_ops.setup_cpu = smp_85xx_setup_cpu; smp_85xx_ops.message_pass = smp_mpic_message_pass; - } + } else + smp_85xx_ops.setup_cpu = smp_85xx_basic_setup; if (cpu_has_feature(CPU_FTR_DBELL)) { /* @@ -427,6 +431,7 @@ void __init mpc85xx_smp_init(void) */ smp_85xx_ops.message_pass = NULL; smp_85xx_ops.cause_ipi = doorbell_cause_ipi; + smp_85xx_ops.probe = NULL; } np = of_find_matching_node(NULL, mpc85xx_smp_guts_ids); -- cgit v1.2.3 From b58a7bd6df7b61446b833a7c72f8a1f11066e0b0 Mon Sep 17 00:00:00 2001 From: Scott Wood Date: Thu, 2 Jan 2014 16:37:50 -0600 Subject: powerpc/fsl-booke: Use SPRN_SPRGn rather than mfsprg/mtsprg This fixes a build break that was probably introduced with the removal of -Wa,-me500 (commit f49596a4cf4753d13951608f24f939a59fdcc653), where the assembler refuses to recognize SPRG4-7 with a generic PPC target. Signed-off-by: Scott Wood Cc: Dongsheng Wang Cc: Anton Vorontsov Reviewed-by: Wang Dongsheng Tested-by: Wang Dongsheng --- arch/powerpc/kernel/swsusp_booke.S | 32 ++++++++++++++++---------------- 1 file changed, 16 insertions(+), 16 deletions(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/kernel/swsusp_booke.S b/arch/powerpc/kernel/swsusp_booke.S index 0f204053e5b5..553c1405ee05 100644 --- a/arch/powerpc/kernel/swsusp_booke.S +++ b/arch/powerpc/kernel/swsusp_booke.S @@ -74,21 +74,21 @@ _GLOBAL(swsusp_arch_suspend) bne 1b /* Save SPRGs */ - mfsprg r4,0 + mfspr r4,SPRN_SPRG0 stw r4,SL_SPRG0(r11) - mfsprg r4,1 + mfspr r4,SPRN_SPRG1 stw r4,SL_SPRG1(r11) - mfsprg r4,2 + mfspr r4,SPRN_SPRG2 stw r4,SL_SPRG2(r11) - mfsprg r4,3 + mfspr r4,SPRN_SPRG3 stw r4,SL_SPRG3(r11) - mfsprg r4,4 + mfspr r4,SPRN_SPRG4 stw r4,SL_SPRG4(r11) - mfsprg r4,5 + mfspr r4,SPRN_SPRG5 stw r4,SL_SPRG5(r11) - mfsprg r4,6 + mfspr r4,SPRN_SPRG6 stw r4,SL_SPRG6(r11) - mfsprg r4,7 + mfspr r4,SPRN_SPRG7 stw r4,SL_SPRG7(r11) /* Call the low level suspend stuff (we should probably have made @@ -150,21 +150,21 @@ _GLOBAL(swsusp_arch_resume) bl _tlbil_all lwz r4,SL_SPRG0(r11) - mtsprg 0,r4 + mtspr SPRN_SPRG0,r4 lwz r4,SL_SPRG1(r11) - mtsprg 1,r4 + mtspr SPRN_SPRG1,r4 lwz r4,SL_SPRG2(r11) - mtsprg 2,r4 + mtspr SPRN_SPRG2,r4 lwz r4,SL_SPRG3(r11) - mtsprg 3,r4 + mtspr SPRN_SPRG3,r4 lwz r4,SL_SPRG4(r11) - mtsprg 4,r4 + mtspr SPRN_SPRG4,r4 lwz r4,SL_SPRG5(r11) - mtsprg 5,r4 + mtspr SPRN_SPRG5,r4 lwz r4,SL_SPRG6(r11) - mtsprg 6,r4 + mtspr SPRN_SPRG6,r4 lwz r4,SL_SPRG7(r11) - mtsprg 7,r4 + mtspr SPRN_SPRG7,r4 /* restore the MSR */ lwz r3,SL_MSR(r11) -- cgit v1.2.3 From 3d73eb69fb6dca340e027b9b7a063b2892756a57 Mon Sep 17 00:00:00 2001 From: Lijun Pan Date: Fri, 15 Nov 2013 17:28:20 -0600 Subject: powerpc/85xx: Merge 85xx/p1023_defconfig into mpc85xx_smp and mpc85xx mpc85xx_smp_defconfig and mpc85xx_defconfig already have CONFIG_P1023RDS=y. Merge CONFIG_P1023RDB=y and other relevant configurations into mpc85xx_smp_defconfig and mpc85_defconfig. Signed-off-by: Lijun Pan Signed-off-by: Scott Wood --- arch/powerpc/configs/85xx/p1023_defconfig | 188 ----------------------------- arch/powerpc/configs/mpc85xx_defconfig | 3 + arch/powerpc/configs/mpc85xx_smp_defconfig | 3 + 3 files changed, 6 insertions(+), 188 deletions(-) delete mode 100644 arch/powerpc/configs/85xx/p1023_defconfig (limited to 'arch/powerpc') diff --git a/arch/powerpc/configs/85xx/p1023_defconfig b/arch/powerpc/configs/85xx/p1023_defconfig deleted file mode 100644 index b06d37da44f4..000000000000 --- a/arch/powerpc/configs/85xx/p1023_defconfig +++ /dev/null @@ -1,188 +0,0 @@ -CONFIG_PPC_85xx=y -CONFIG_SMP=y -CONFIG_NR_CPUS=2 -CONFIG_SYSVIPC=y -CONFIG_POSIX_MQUEUE=y -CONFIG_BSD_PROCESS_ACCT=y -CONFIG_AUDIT=y -CONFIG_NO_HZ=y -CONFIG_HIGH_RES_TIMERS=y -CONFIG_RCU_FANOUT=32 -CONFIG_IKCONFIG=y -CONFIG_IKCONFIG_PROC=y -CONFIG_LOG_BUF_SHIFT=14 -CONFIG_BLK_DEV_INITRD=y -CONFIG_KALLSYMS_ALL=y -CONFIG_EMBEDDED=y -CONFIG_MODULES=y -CONFIG_MODULE_UNLOAD=y -CONFIG_MODULE_FORCE_UNLOAD=y -CONFIG_MODVERSIONS=y -# CONFIG_BLK_DEV_BSG is not set -CONFIG_PARTITION_ADVANCED=y -CONFIG_MAC_PARTITION=y -CONFIG_PHYSICAL_START=0x00000000 -CONFIG_P1023_RDB=y -CONFIG_P1023_RDS=y -CONFIG_QUICC_ENGINE=y -CONFIG_QE_GPIO=y -CONFIG_CPM2=y -CONFIG_HIGHMEM=y -# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set -CONFIG_BINFMT_MISC=m -CONFIG_MATH_EMULATION=y -CONFIG_SWIOTLB=y -CONFIG_PCI=y -CONFIG_PCIEPORTBUS=y -# CONFIG_PCIEAER is not set -# CONFIG_PCIEASPM is not set -CONFIG_PCI_MSI=y -CONFIG_NET=y -CONFIG_PACKET=y -CONFIG_UNIX=y -CONFIG_XFRM_USER=y -CONFIG_NET_KEY=y -CONFIG_INET=y -CONFIG_IP_MULTICAST=y -CONFIG_IP_ADVANCED_ROUTER=y -CONFIG_IP_MULTIPLE_TABLES=y -CONFIG_IP_ROUTE_MULTIPATH=y -CONFIG_IP_ROUTE_VERBOSE=y -CONFIG_IP_PNP=y -CONFIG_IP_PNP_DHCP=y -CONFIG_IP_PNP_BOOTP=y -CONFIG_IP_PNP_RARP=y -CONFIG_NET_IPIP=y -CONFIG_IP_MROUTE=y -CONFIG_IP_PIMSM_V1=y -CONFIG_IP_PIMSM_V2=y -CONFIG_ARPD=y -CONFIG_INET_ESP=y -# CONFIG_INET_XFRM_MODE_BEET is not set -# CONFIG_INET_LRO is not set -CONFIG_IPV6=y -CONFIG_IP_SCTP=m -CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" -CONFIG_DEVTMPFS=y -CONFIG_DEVTMPFS_MOUNT=y -CONFIG_MTD=y -CONFIG_MTD_CMDLINE_PARTS=y -CONFIG_MTD_CHAR=y -CONFIG_MTD_BLOCK=y -CONFIG_MTD_CFI=y -CONFIG_MTD_CFI_AMDSTD=y -CONFIG_MTD_PHYSMAP_OF=y -CONFIG_MTD_NAND=y -CONFIG_MTD_NAND_FSL_ELBC=y -CONFIG_PROC_DEVICETREE=y -CONFIG_BLK_DEV_LOOP=y -CONFIG_BLK_DEV_RAM=y -CONFIG_BLK_DEV_RAM_SIZE=131072 -CONFIG_EEPROM_AT24=y -CONFIG_EEPROM_LEGACY=y -CONFIG_BLK_DEV_SD=y -CONFIG_CHR_DEV_ST=y -CONFIG_BLK_DEV_SR=y -CONFIG_CHR_DEV_SG=y -CONFIG_SCSI_MULTI_LUN=y -CONFIG_SCSI_LOGGING=y -CONFIG_ATA=y -CONFIG_SATA_FSL=y -CONFIG_SATA_SIL24=y -CONFIG_NETDEVICES=y -CONFIG_DUMMY=y -CONFIG_FS_ENET=y -CONFIG_FSL_PQ_MDIO=y -CONFIG_E1000E=y -CONFIG_PHYLIB=y -CONFIG_AT803X_PHY=y -CONFIG_MARVELL_PHY=y -CONFIG_DAVICOM_PHY=y -CONFIG_CICADA_PHY=y -CONFIG_VITESSE_PHY=y -CONFIG_FIXED_PHY=y -CONFIG_INPUT_FF_MEMLESS=m -# CONFIG_INPUT_MOUSEDEV is not set -# CONFIG_INPUT_KEYBOARD is not set -# CONFIG_INPUT_MOUSE is not set -CONFIG_SERIO_LIBPS2=y -CONFIG_SERIAL_8250=y -CONFIG_SERIAL_8250_CONSOLE=y -CONFIG_SERIAL_8250_NR_UARTS=2 -CONFIG_SERIAL_8250_RUNTIME_UARTS=2 -CONFIG_SERIAL_8250_EXTENDED=y -CONFIG_SERIAL_8250_MANY_PORTS=y -CONFIG_SERIAL_8250_SHARE_IRQ=y -CONFIG_SERIAL_8250_DETECT_IRQ=y -CONFIG_SERIAL_8250_RSA=y -CONFIG_HW_RANDOM=y -CONFIG_NVRAM=y -CONFIG_I2C=y -CONFIG_I2C_CHARDEV=y -CONFIG_I2C_CPM=m -CONFIG_I2C_MPC=y -CONFIG_GPIO_MPC8XXX=y -# CONFIG_HWMON is not set -CONFIG_VIDEO_OUTPUT_CONTROL=y -CONFIG_SOUND=y -CONFIG_SND=y -CONFIG_SND_MIXER_OSS=y -CONFIG_SND_PCM_OSS=y -# CONFIG_SND_SUPPORT_OLD_API is not set -CONFIG_USB=y -CONFIG_USB_DEVICEFS=y -CONFIG_USB_MON=y -CONFIG_USB_EHCI_HCD=y -CONFIG_USB_EHCI_FSL=y -CONFIG_USB_STORAGE=y -CONFIG_EDAC=y -CONFIG_EDAC_MM_EDAC=y -CONFIG_RTC_CLASS=y -CONFIG_RTC_DRV_DS1307=y -CONFIG_RTC_DRV_CMOS=y -CONFIG_DMADEVICES=y -CONFIG_FSL_DMA=y -# CONFIG_NET_DMA is not set -CONFIG_STAGING=y -CONFIG_EXT2_FS=y -CONFIG_EXT3_FS=y -# CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set -CONFIG_ISO9660_FS=m -CONFIG_JOLIET=y -CONFIG_ZISOFS=y -CONFIG_UDF_FS=m -CONFIG_MSDOS_FS=m -CONFIG_VFAT_FS=y -CONFIG_NTFS_FS=y -CONFIG_PROC_KCORE=y -CONFIG_TMPFS=y -CONFIG_ADFS_FS=m -CONFIG_AFFS_FS=m -CONFIG_HFS_FS=m -CONFIG_HFSPLUS_FS=m -CONFIG_BEFS_FS=m -CONFIG_BFS_FS=m -CONFIG_EFS_FS=m -CONFIG_CRAMFS=y -CONFIG_VXFS_FS=m -CONFIG_HPFS_FS=m -CONFIG_QNX4FS_FS=m -CONFIG_SYSV_FS=m -CONFIG_UFS_FS=m -CONFIG_NFS_FS=y -CONFIG_NFS_V4=y -CONFIG_ROOT_NFS=y -CONFIG_NFSD=y -CONFIG_CRC_T10DIF=y -CONFIG_FRAME_WARN=8092 -CONFIG_DEBUG_FS=y -CONFIG_DETECT_HUNG_TASK=y -# CONFIG_DEBUG_BUGVERBOSE is not set -CONFIG_DEBUG_INFO=y -CONFIG_STRICT_DEVMEM=y -CONFIG_CRYPTO_PCBC=m -CONFIG_CRYPTO_SHA256=y -CONFIG_CRYPTO_SHA512=y -CONFIG_CRYPTO_AES=y -# CONFIG_CRYPTO_ANSI_CPRNG is not set -CONFIG_CRYPTO_DEV_FSL_CAAM=y diff --git a/arch/powerpc/configs/mpc85xx_defconfig b/arch/powerpc/configs/mpc85xx_defconfig index d2e0fab5ee5b..83d3550fdb54 100644 --- a/arch/powerpc/configs/mpc85xx_defconfig +++ b/arch/powerpc/configs/mpc85xx_defconfig @@ -31,6 +31,7 @@ CONFIG_C293_PCIE=y CONFIG_P1010_RDB=y CONFIG_P1022_DS=y CONFIG_P1022_RDK=y +CONFIG_P1023_RDB=y CONFIG_P1023_RDS=y CONFIG_SOCRATES=y CONFIG_KSI8560=y @@ -113,6 +114,7 @@ CONFIG_BLK_DEV_LOOP=y CONFIG_BLK_DEV_NBD=y CONFIG_BLK_DEV_RAM=y CONFIG_BLK_DEV_RAM_SIZE=131072 +CONFIG_EEPROM_AT24=y CONFIG_EEPROM_LEGACY=y CONFIG_BLK_DEV_SD=y CONFIG_CHR_DEV_ST=y @@ -211,6 +213,7 @@ CONFIG_EDAC=y CONFIG_EDAC_MM_EDAC=y CONFIG_RTC_CLASS=y CONFIG_RTC_DRV_CMOS=y +CONFIG_RTC_DRV_DS1307=y CONFIG_DMADEVICES=y CONFIG_FSL_DMA=y # CONFIG_NET_DMA is not set diff --git a/arch/powerpc/configs/mpc85xx_smp_defconfig b/arch/powerpc/configs/mpc85xx_smp_defconfig index 4cb7b59e98bd..4b686294feb4 100644 --- a/arch/powerpc/configs/mpc85xx_smp_defconfig +++ b/arch/powerpc/configs/mpc85xx_smp_defconfig @@ -34,6 +34,7 @@ CONFIG_C293_PCIE=y CONFIG_P1010_RDB=y CONFIG_P1022_DS=y CONFIG_P1022_RDK=y +CONFIG_P1023_RDB=y CONFIG_P1023_RDS=y CONFIG_SOCRATES=y CONFIG_KSI8560=y @@ -116,6 +117,7 @@ CONFIG_BLK_DEV_LOOP=y CONFIG_BLK_DEV_NBD=y CONFIG_BLK_DEV_RAM=y CONFIG_BLK_DEV_RAM_SIZE=131072 +CONFIG_EEPROM_AT24=y CONFIG_EEPROM_LEGACY=y CONFIG_BLK_DEV_SD=y CONFIG_CHR_DEV_ST=y @@ -212,6 +214,7 @@ CONFIG_EDAC=y CONFIG_EDAC_MM_EDAC=y CONFIG_RTC_CLASS=y CONFIG_RTC_DRV_CMOS=y +CONFIG_RTC_DRV_DS1307=y CONFIG_DMADEVICES=y CONFIG_FSL_DMA=y # CONFIG_NET_DMA is not set -- cgit v1.2.3 From 72c916ae97ff503b01fa21efe91d4328439ab004 Mon Sep 17 00:00:00 2001 From: Xie Xiaobo Date: Wed, 6 Nov 2013 17:08:02 +0800 Subject: powerpc/85xx: Add QE common init function Define a QE init function in common file, and avoid the same codes being duplicated in board files. Signed-off-by: Xie Xiaobo Signed-off-by: Scott Wood --- arch/powerpc/platforms/85xx/common.c | 38 +++++++++++++++++++++++++++++++ arch/powerpc/platforms/85xx/mpc85xx.h | 6 +++++ arch/powerpc/platforms/85xx/mpc85xx_mds.c | 29 ++--------------------- arch/powerpc/platforms/85xx/mpc85xx_rdb.c | 25 ++------------------ 4 files changed, 48 insertions(+), 50 deletions(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/platforms/85xx/common.c b/arch/powerpc/platforms/85xx/common.c index eba78c85303f..3b085c7ee539 100644 --- a/arch/powerpc/platforms/85xx/common.c +++ b/arch/powerpc/platforms/85xx/common.c @@ -9,6 +9,7 @@ #include #include +#include #include #include "mpc85xx.h" @@ -82,3 +83,40 @@ void __init mpc85xx_cpm2_pic_init(void) irq_set_chained_handler(irq, cpm2_cascade); } #endif + +#ifdef CONFIG_QUICC_ENGINE +void __init mpc85xx_qe_init(void) +{ + struct device_node *np; + + np = of_find_compatible_node(NULL, NULL, "fsl,qe"); + if (!np) { + np = of_find_node_by_name(NULL, "qe"); + if (!np) { + pr_err("%s: Could not find Quicc Engine node\n", + __func__); + return; + } + } + + if (!of_device_is_available(np)) { + of_node_put(np); + return; + } + + qe_reset(); + of_node_put(np); + + np = of_find_node_by_name(NULL, "par_io"); + if (np) { + struct device_node *ucc; + + par_io_init(np); + of_node_put(np); + + for_each_node_by_name(ucc, "ucc") + par_io_of_config(ucc); + + } +} +#endif diff --git a/arch/powerpc/platforms/85xx/mpc85xx.h b/arch/powerpc/platforms/85xx/mpc85xx.h index 2aa7c5dc2c7f..fc51dd4092e5 100644 --- a/arch/powerpc/platforms/85xx/mpc85xx.h +++ b/arch/powerpc/platforms/85xx/mpc85xx.h @@ -8,4 +8,10 @@ extern void mpc85xx_cpm2_pic_init(void); static inline void __init mpc85xx_cpm2_pic_init(void) {} #endif /* CONFIG_CPM2 */ +#ifdef CONFIG_QUICC_ENGINE +extern void mpc85xx_qe_init(void); +#else +static inline void __init mpc85xx_qe_init(void) {} +#endif + #endif diff --git a/arch/powerpc/platforms/85xx/mpc85xx_mds.c b/arch/powerpc/platforms/85xx/mpc85xx_mds.c index a7b3621a8df5..34f3c5eb3bee 100644 --- a/arch/powerpc/platforms/85xx/mpc85xx_mds.c +++ b/arch/powerpc/platforms/85xx/mpc85xx_mds.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2006-2010, 2012 Freescale Semiconductor, Inc. + * Copyright (C) 2006-2010, 2012-2013 Freescale Semiconductor, Inc. * All rights reserved. * * Author: Andy Fleming @@ -238,32 +238,7 @@ static void __init mpc85xx_mds_qe_init(void) { struct device_node *np; - np = of_find_compatible_node(NULL, NULL, "fsl,qe"); - if (!np) { - np = of_find_node_by_name(NULL, "qe"); - if (!np) - return; - } - - if (!of_device_is_available(np)) { - of_node_put(np); - return; - } - - qe_reset(); - of_node_put(np); - - np = of_find_node_by_name(NULL, "par_io"); - if (np) { - struct device_node *ucc; - - par_io_init(np); - of_node_put(np); - - for_each_node_by_name(ucc, "ucc") - par_io_of_config(ucc); - } - + mpc85xx_qe_init(); mpc85xx_mds_reset_ucc_phys(); if (machine_is(p1021_mds)) { diff --git a/arch/powerpc/platforms/85xx/mpc85xx_rdb.c b/arch/powerpc/platforms/85xx/mpc85xx_rdb.c index 53b6fb0a3d56..e15bdd18fdb2 100644 --- a/arch/powerpc/platforms/85xx/mpc85xx_rdb.c +++ b/arch/powerpc/platforms/85xx/mpc85xx_rdb.c @@ -1,7 +1,7 @@ /* * MPC85xx RDB Board Setup * - * Copyright 2009,2012 Freescale Semiconductor Inc. + * Copyright 2009,2012-2013 Freescale Semiconductor Inc. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the @@ -98,26 +98,7 @@ static void __init mpc85xx_rdb_setup_arch(void) fsl_pci_assign_primary(); #ifdef CONFIG_QUICC_ENGINE - np = of_find_compatible_node(NULL, NULL, "fsl,qe"); - if (!np) { - pr_err("%s: Could not find Quicc Engine node\n", __func__); - goto qe_fail; - } - - qe_reset(); - of_node_put(np); - - np = of_find_node_by_name(NULL, "par_io"); - if (np) { - struct device_node *ucc; - - par_io_init(np); - of_node_put(np); - - for_each_node_by_name(ucc, "ucc") - par_io_of_config(ucc); - - } + mpc85xx_qe_init(); #if defined(CONFIG_UCC_GETH) || defined(CONFIG_SERIAL_QE) if (machine_is(p1025_rdb)) { @@ -148,8 +129,6 @@ static void __init mpc85xx_rdb_setup_arch(void) } #endif - -qe_fail: #endif /* CONFIG_QUICC_ENGINE */ printk(KERN_INFO "MPC85xx RDB board from Freescale Semiconductor\n"); -- cgit v1.2.3 From 8a6be2bdb608dec6b988d2b9a875a88f8b684bfb Mon Sep 17 00:00:00 2001 From: Xie Xiaobo Date: Wed, 6 Nov 2013 17:08:03 +0800 Subject: powerpc/85xx: Add TWR-P1025 board support TWR-P1025 Overview ----------------- 512Mbyte DDR3 (on board DDR) 64MB Nor Flash eTSEC1: Connected to RGMII PHY AR8035 eTSEC3: Connected to RGMII PHY AR8035 Two USB2.0 Type A One microSD Card slot One mini-PCIe slot One mini-USB TypeB dual UART Signed-off-by: Michael Johnston Signed-off-by: Xie Xiaobo [scottwood@freescale.com: use pr_info rather than KERN_INFO] Signed-off-by: Scott Wood --- .../devicetree/bindings/video/ssd1289fb.txt | 13 + arch/powerpc/boot/dts/p1025twr.dts | 95 +++++++ arch/powerpc/boot/dts/p1025twr.dtsi | 280 +++++++++++++++++++++ arch/powerpc/platforms/85xx/Kconfig | 6 + arch/powerpc/platforms/85xx/Makefile | 1 + arch/powerpc/platforms/85xx/twr_p102x.c | 147 +++++++++++ 6 files changed, 542 insertions(+) create mode 100644 Documentation/devicetree/bindings/video/ssd1289fb.txt create mode 100644 arch/powerpc/boot/dts/p1025twr.dts create mode 100644 arch/powerpc/boot/dts/p1025twr.dtsi create mode 100644 arch/powerpc/platforms/85xx/twr_p102x.c (limited to 'arch/powerpc') diff --git a/Documentation/devicetree/bindings/video/ssd1289fb.txt b/Documentation/devicetree/bindings/video/ssd1289fb.txt new file mode 100644 index 000000000000..4fcd5e68cb6e --- /dev/null +++ b/Documentation/devicetree/bindings/video/ssd1289fb.txt @@ -0,0 +1,13 @@ +* Solomon SSD1289 Framebuffer Driver + +Required properties: + - compatible: Should be "solomon,ssd1289fb". The only supported bus for + now is lbc. + - reg: Should contain address of the controller on the LBC bus. The detail + was described in Documentation/devicetree/bindings/powerpc/fsl/lbc.txt + +Examples: +display@2,0 { + compatible = "solomon,ssd1289fb"; + reg = <0x2 0x0000 0x0004>; +}; diff --git a/arch/powerpc/boot/dts/p1025twr.dts b/arch/powerpc/boot/dts/p1025twr.dts new file mode 100644 index 000000000000..9036a4987905 --- /dev/null +++ b/arch/powerpc/boot/dts/p1025twr.dts @@ -0,0 +1,95 @@ +/* + * P1025 TWR Device Tree Source (32-bit address map) + * + * Copyright 2013 Freescale Semiconductor Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of Freescale Semiconductor nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") as published by the Free Software + * Foundation, either version 2 of that License or (at your option) any + * later version. + * + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/include/ "fsl/p1021si-pre.dtsi" +/ { + model = "fsl,P1025"; + compatible = "fsl,TWR-P1025"; + + memory { + device_type = "memory"; + }; + + lbc: localbus@ffe05000 { + reg = <0 0xffe05000 0 0x1000>; + + /* NOR Flash and SSD1289 */ + ranges = <0x0 0x0 0x0 0xec000000 0x04000000 + 0x2 0x0 0x0 0xe0000000 0x00020000>; + }; + + soc: soc@ffe00000 { + ranges = <0x0 0x0 0xffe00000 0x100000>; + }; + + pci0: pcie@ffe09000 { + ranges = <0x2000000 0x0 0xa0000000 0 0xa0000000 0x0 0x20000000 + 0x1000000 0x0 0x00000000 0 0xffc10000 0x0 0x10000>; + reg = <0 0xffe09000 0 0x1000>; + pcie@0 { + ranges = <0x2000000 0x0 0xa0000000 + 0x2000000 0x0 0xa0000000 + 0x0 0x20000000 + + 0x1000000 0x0 0x0 + 0x1000000 0x0 0x0 + 0x0 0x100000>; + }; + }; + + pci1: pcie@ffe0a000 { + reg = <0 0xffe0a000 0 0x1000>; + ranges = <0x2000000 0x0 0x80000000 0 0x80000000 0x0 0x20000000 + 0x1000000 0x0 0x00000000 0 0xffc00000 0x0 0x10000>; + pcie@0 { + ranges = <0x2000000 0x0 0x80000000 + 0x2000000 0x0 0x80000000 + 0x0 0x20000000 + + 0x1000000 0x0 0x0 + 0x1000000 0x0 0x0 + 0x0 0x100000>; + }; + }; + + qe: qe@ffe80000 { + ranges = <0x0 0x0 0xffe80000 0x40000>; + reg = <0 0xffe80000 0 0x480>; + brg-frequency = <0>; + bus-frequency = <0>; + }; +}; + +/include/ "p1025twr.dtsi" +/include/ "fsl/p1021si-post.dtsi" diff --git a/arch/powerpc/boot/dts/p1025twr.dtsi b/arch/powerpc/boot/dts/p1025twr.dtsi new file mode 100644 index 000000000000..8453501c256e --- /dev/null +++ b/arch/powerpc/boot/dts/p1025twr.dtsi @@ -0,0 +1,280 @@ +/* + * P1025 TWR Device Tree Source stub (no addresses or top-level ranges) + * + * Copyright 2013 Freescale Semiconductor Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of Freescale Semiconductor nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") as published by the Free Software + * Foundation, either version 2 of that License or (at your option) any + * later version. + * + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/{ + aliases { + ethernet3 = &enet3; + ethernet4 = &enet4; + }; +}; + +&lbc { + nor@0,0 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "cfi-flash"; + reg = <0x0 0x0 0x4000000>; + bank-width = <2>; + device-width = <1>; + + partition@0 { + /* This location must not be altered */ + /* 256KB for Vitesse 7385 Switch firmware */ + reg = <0x0 0x00040000>; + label = "NOR Vitesse-7385 Firmware"; + read-only; + }; + + partition@40000 { + /* 256KB for DTB Image */ + reg = <0x00040000 0x00040000>; + label = "NOR DTB Image"; + }; + + partition@80000 { + /* 5.5 MB for Linux Kernel Image */ + reg = <0x00080000 0x00580000>; + label = "NOR Linux Kernel Image"; + }; + + partition@400000 { + /* 56.75MB for Root file System */ + reg = <0x00600000 0x038c0000>; + label = "NOR Root File System"; + }; + + partition@ec0000 { + /* This location must not be altered */ + /* 256KB for QE ucode firmware*/ + reg = <0x03ec0000 0x00040000>; + label = "NOR QE microcode firmware"; + read-only; + }; + + partition@f00000 { + /* This location must not be altered */ + /* 512KB for u-boot Bootloader Image */ + /* 512KB for u-boot Environment Variables */ + reg = <0x03f00000 0x00100000>; + label = "NOR U-Boot Image"; + read-only; + }; + }; + + /* CS2 for Display */ + display@2,0 { + compatible = "solomon,ssd1289fb"; + reg = <0x2 0x0000 0x0004>; + }; + +}; + +&soc { + usb@22000 { + phy_type = "ulpi"; + }; + + mdio@24000 { + phy0: ethernet-phy@2 { + interrupt-parent = <&mpic>; + interrupts = <1 1 0 0>; + reg = <0x2>; + }; + + phy1: ethernet-phy@1 { + interrupt-parent = <&mpic>; + interrupts = <2 1 0 0>; + reg = <0x1>; + }; + + tbi0: tbi-phy@11 { + reg = <0x11>; + device_type = "tbi-phy"; + }; + }; + + mdio@25000 { + tbi1: tbi-phy@11 { + reg = <0x11>; + device_type = "tbi-phy"; + }; + }; + + mdio@26000 { + tbi2: tbi-phy@11 { + reg = <0x11>; + device_type = "tbi-phy"; + }; + }; + + enet0: ethernet@b0000 { + phy-handle = <&phy0>; + phy-connection-type = "rgmii-id"; + + }; + + enet1: ethernet@b1000 { + status = "disabled"; + }; + + enet2: ethernet@b2000 { + phy-handle = <&phy1>; + phy-connection-type = "rgmii-id"; + }; + + par_io@e0100 { + #address-cells = <1>; + #size-cells = <1>; + reg = <0xe0100 0x60>; + ranges = <0x0 0xe0100 0x60>; + device_type = "par_io"; + num-ports = <3>; + pio1: ucc_pin@01 { + pio-map = < + /* port pin dir open_drain assignment has_irq */ + 0x1 0x13 0x1 0x0 0x1 0x0 /* QE_MUX_MDC */ + 0x1 0x14 0x3 0x0 0x1 0x0 /* QE_MUX_MDIO */ + 0x0 0x17 0x2 0x0 0x2 0x0 /* CLK12 */ + 0x0 0x18 0x2 0x0 0x1 0x0 /* CLK9 */ + 0x0 0x7 0x1 0x0 0x2 0x0 /* ENET1_TXD0_SER1_TXD0 */ + 0x0 0x9 0x1 0x0 0x2 0x0 /* ENET1_TXD1_SER1_TXD1 */ + 0x0 0xb 0x1 0x0 0x2 0x0 /* ENET1_TXD2_SER1_TXD2 */ + 0x0 0xc 0x1 0x0 0x2 0x0 /* ENET1_TXD3_SER1_TXD3 */ + 0x0 0x6 0x2 0x0 0x2 0x0 /* ENET1_RXD0_SER1_RXD0 */ + 0x0 0xa 0x2 0x0 0x2 0x0 /* ENET1_RXD1_SER1_RXD1 */ + 0x0 0xe 0x2 0x0 0x2 0x0 /* ENET1_RXD2_SER1_RXD2 */ + 0x0 0xf 0x2 0x0 0x2 0x0 /* ENET1_RXD3_SER1_RXD3 */ + 0x0 0x5 0x1 0x0 0x2 0x0 /* ENET1_TX_EN_SER1_RTS_B */ + 0x0 0xd 0x1 0x0 0x2 0x0 /* ENET1_TX_ER */ + 0x0 0x4 0x2 0x0 0x2 0x0 /* ENET1_RX_DV_SER1_CTS_B */ + 0x0 0x8 0x2 0x0 0x2 0x0 /* ENET1_RX_ER_SER1_CD_B */ + 0x0 0x11 0x2 0x0 0x2 0x0 /* ENET1_CRS */ + 0x0 0x10 0x2 0x0 0x2 0x0>; /* ENET1_COL */ + }; + + pio2: ucc_pin@02 { + pio-map = < + /* port pin dir open_drain assignment has_irq */ + 0x1 0x13 0x1 0x0 0x1 0x0 /* QE_MUX_MDC */ + 0x1 0x14 0x3 0x0 0x1 0x0 /* QE_MUX_MDIO */ + 0x1 0xb 0x2 0x0 0x1 0x0 /* CLK13 */ + 0x1 0x7 0x1 0x0 0x2 0x0 /* ENET5_TXD0_SER5_TXD0 */ + 0x1 0xa 0x1 0x0 0x2 0x0 /* ENET5_TXD1_SER5_TXD1 */ + 0x1 0x6 0x2 0x0 0x2 0x0 /* ENET5_RXD0_SER5_RXD0 */ + 0x1 0x9 0x2 0x0 0x2 0x0 /* ENET5_RXD1_SER5_RXD1 */ + 0x1 0x5 0x1 0x0 0x2 0x0 /* ENET5_TX_EN_SER5_RTS_B */ + 0x1 0x4 0x2 0x0 0x2 0x0 /* ENET5_RX_DV_SER5_CTS_B */ + 0x1 0x8 0x2 0x0 0x2 0x0>; /* ENET5_RX_ER_SER5_CD_B */ + }; + + pio3: ucc_pin@03 { + pio-map = < + /* port pin dir open_drain assignment has_irq */ + 0x0 0x16 0x2 0x0 0x2 0x0 /* SER7_CD_B*/ + 0x0 0x12 0x2 0x0 0x2 0x0 /* SER7_CTS_B*/ + 0x0 0x13 0x1 0x0 0x2 0x0 /* SER7_RTS_B*/ + 0x0 0x14 0x2 0x0 0x2 0x0 /* SER7_RXD0*/ + 0x0 0x15 0x1 0x0 0x2 0x0>; /* SER7_TXD0*/ + }; + + pio4: ucc_pin@04 { + pio-map = < + /* port pin dir open_drain assignment has_irq */ + 0x1 0x0 0x2 0x0 0x2 0x0 /* SER3_CD_B*/ + 0x0 0x1c 0x2 0x0 0x2 0x0 /* SER3_CTS_B*/ + 0x0 0x1d 0x1 0x0 0x2 0x0 /* SER3_RTS_B*/ + 0x0 0x1e 0x2 0x0 0x2 0x0 /* SER3_RXD0*/ + 0x0 0x1f 0x1 0x0 0x2 0x0>; /* SER3_TXD0*/ + }; + }; +}; + +&qe { + enet3: ucc@2000 { + device_type = "network"; + compatible = "ucc_geth"; + rx-clock-name = "clk12"; + tx-clock-name = "clk9"; + pio-handle = <&pio1>; + phy-handle = <&qe_phy0>; + phy-connection-type = "mii"; + }; + + mdio@2120 { + qe_phy0: ethernet-phy@18 { + interrupt-parent = <&mpic>; + interrupts = <4 1 0 0>; + reg = <0x18>; + device_type = "ethernet-phy"; + }; + qe_phy1: ethernet-phy@19 { + interrupt-parent = <&mpic>; + interrupts = <5 1 0 0>; + reg = <0x19>; + device_type = "ethernet-phy"; + }; + tbi-phy@11 { + reg = <0x11>; + device_type = "tbi-phy"; + }; + }; + + enet4: ucc@2400 { + device_type = "network"; + compatible = "ucc_geth"; + rx-clock-name = "none"; + tx-clock-name = "clk13"; + pio-handle = <&pio2>; + phy-handle = <&qe_phy1>; + phy-connection-type = "rmii"; + }; + + serial2: ucc@2600 { + device_type = "serial"; + compatible = "ucc_uart"; + port-number = <0>; + rx-clock-name = "brg6"; + tx-clock-name = "brg6"; + pio-handle = <&pio3>; + }; + + serial3: ucc@2200 { + device_type = "serial"; + compatible = "ucc_uart"; + port-number = <1>; + rx-clock-name = "brg2"; + tx-clock-name = "brg2"; + pio-handle = <&pio4>; + }; +}; diff --git a/arch/powerpc/platforms/85xx/Kconfig b/arch/powerpc/platforms/85xx/Kconfig index 4d4634958cfb..c17aae80e7ff 100644 --- a/arch/powerpc/platforms/85xx/Kconfig +++ b/arch/powerpc/platforms/85xx/Kconfig @@ -123,6 +123,12 @@ config P1023_RDS help This option enables support for the P1023 RDS and RDB boards +config TWR_P102x + bool "Freescale TWR-P102x" + select DEFAULT_UIMAGE + help + This option enables support for the TWR-P1025 board. + config SOCRATES bool "Socrates" select DEFAULT_UIMAGE diff --git a/arch/powerpc/platforms/85xx/Makefile b/arch/powerpc/platforms/85xx/Makefile index dd4c0b59577b..25cebe74ac46 100644 --- a/arch/powerpc/platforms/85xx/Makefile +++ b/arch/powerpc/platforms/85xx/Makefile @@ -18,6 +18,7 @@ obj-$(CONFIG_P1010_RDB) += p1010rdb.o obj-$(CONFIG_P1022_DS) += p1022_ds.o obj-$(CONFIG_P1022_RDK) += p1022_rdk.o obj-$(CONFIG_P1023_RDS) += p1023_rds.o +obj-$(CONFIG_TWR_P102x) += twr_p102x.o obj-$(CONFIG_CORENET_GENERIC) += corenet_generic.o obj-$(CONFIG_STX_GP3) += stx_gp3.o obj-$(CONFIG_TQM85xx) += tqm85xx.o diff --git a/arch/powerpc/platforms/85xx/twr_p102x.c b/arch/powerpc/platforms/85xx/twr_p102x.c new file mode 100644 index 000000000000..c25ff10f05ee --- /dev/null +++ b/arch/powerpc/platforms/85xx/twr_p102x.c @@ -0,0 +1,147 @@ +/* + * Copyright 2010-2011, 2013 Freescale Semiconductor, Inc. + * + * Author: Michael Johnston + * + * Description: + * TWR-P102x Board Setup + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include + +#include +#include +#include "smp.h" + +#include "mpc85xx.h" + +static void __init twr_p1025_pic_init(void) +{ + struct mpic *mpic; + +#ifdef CONFIG_QUICC_ENGINE + struct device_node *np; +#endif + + mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN | + MPIC_SINGLE_DEST_CPU, + 0, 256, " OpenPIC "); + + BUG_ON(mpic == NULL); + mpic_init(mpic); + +#ifdef CONFIG_QUICC_ENGINE + np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic"); + if (np) { + qe_ic_init(np, 0, qe_ic_cascade_low_mpic, + qe_ic_cascade_high_mpic); + of_node_put(np); + } else + pr_err("Could not find qe-ic node\n"); +#endif +} + +/* ************************************************************************ + * + * Setup the architecture + * + */ +static void __init twr_p1025_setup_arch(void) +{ +#ifdef CONFIG_QUICC_ENGINE + struct device_node *np; +#endif + + if (ppc_md.progress) + ppc_md.progress("twr_p1025_setup_arch()", 0); + + mpc85xx_smp_init(); + + fsl_pci_assign_primary(); + +#ifdef CONFIG_QUICC_ENGINE + mpc85xx_qe_init(); + +#if defined(CONFIG_UCC_GETH) || defined(CONFIG_SERIAL_QE) + if (machine_is(twr_p1025)) { + struct ccsr_guts __iomem *guts; + + np = of_find_compatible_node(NULL, NULL, "fsl,p1021-guts"); + if (np) { + guts = of_iomap(np, 0); + if (!guts) + pr_err("twr_p1025: could not map global utilities register\n"); + else { + /* P1025 has pins muxed for QE and other functions. To + * enable QE UEC mode, we need to set bit QE0 for UCC1 + * in Eth mode, QE0 and QE3 for UCC5 in Eth mode, QE9 + * and QE12 for QE MII management signals in PMUXCR + * register. + * Set QE mux bits in PMUXCR */ + setbits32(&guts->pmuxcr, MPC85xx_PMUXCR_QE(0) | + MPC85xx_PMUXCR_QE(3) | + MPC85xx_PMUXCR_QE(9) | + MPC85xx_PMUXCR_QE(12)); + iounmap(guts); + +#if defined(CONFIG_SERIAL_QE) + /* On P1025TWR board, the UCC7 acted as UART port. + * However, The UCC7's CTS pin is low level in default, + * it will impact the transmission in full duplex + * communication. So disable the Flow control pin PA18. + * The UCC7 UART just can use RXD and TXD pins. + */ + par_io_config_pin(0, 18, 0, 0, 0, 0); +#endif + /* Drive PB29 to CPLD low - CPLD will then change + * muxing from LBC to QE */ + par_io_config_pin(1, 29, 1, 0, 0, 0); + par_io_data_set(1, 29, 0); + } + of_node_put(np); + } + } +#endif +#endif /* CONFIG_QUICC_ENGINE */ + + pr_info("TWR-P1025 board from Freescale Semiconductor\n"); +} + +machine_arch_initcall(twr_p1025, mpc85xx_common_publish_devices); + +static int __init twr_p1025_probe(void) +{ + unsigned long root = of_get_flat_dt_root(); + + return of_flat_dt_is_compatible(root, "fsl,TWR-P1025"); +} + +define_machine(twr_p1025) { + .name = "TWR-P1025", + .probe = twr_p1025_probe, + .setup_arch = twr_p1025_setup_arch, + .init_IRQ = twr_p1025_pic_init, +#ifdef CONFIG_PCI + .pcibios_fixup_bus = fsl_pcibios_fixup_bus, +#endif + .get_irq = mpic_get_irq, + .restart = fsl_rstcr_restart, + .calibrate_decr = generic_calibrate_decr, + .progress = udbg_progress, +}; -- cgit v1.2.3 From 189046981b0bb122cba1d1e559bbd69d0b128cb5 Mon Sep 17 00:00:00 2001 From: LEROY Christophe Date: Fri, 22 Nov 2013 18:28:29 +0100 Subject: powerpc 8xx: defconfig: slice by 4 is more efficient than the default slice by 8 on Powerpc 8xx. On PPC_8xx, CRC32_SLICEBY4 is more efficient (almost twice) than CRC32_SLICEBY8, as shown below: With CRC32_SLICEBY8: [ 1.109204] crc32: CRC_LE_BITS = 64, CRC_BE BITS = 64 [ 1.114401] crc32: self tests passed, processed 225944 bytes in 15118910 nsec [ 1.130655] crc32c: CRC_LE_BITS = 64 [ 1.134235] crc32c: self tests passed, processed 225944 bytes in 4479879 nsec With CRC32_SLICEBY4: [ 1.097129] crc32: CRC_LE_BITS = 32, CRC_BE BITS = 32 [ 1.101878] crc32: self tests passed, processed 225944 bytes in 8616242 nsec [ 1.116298] crc32c: CRC_LE_BITS = 32 [ 1.119607] crc32c: self tests passed, processed 225944 bytes in 3289576 nsec Signed-off-by: Christophe Leroy Signed-off-by: Scott Wood --- arch/powerpc/configs/adder875_defconfig | 1 + arch/powerpc/configs/ep88xc_defconfig | 1 + arch/powerpc/configs/mpc866_ads_defconfig | 1 + arch/powerpc/configs/mpc885_ads_defconfig | 1 + arch/powerpc/configs/tqm8xx_defconfig | 1 + 5 files changed, 5 insertions(+) (limited to 'arch/powerpc') diff --git a/arch/powerpc/configs/adder875_defconfig b/arch/powerpc/configs/adder875_defconfig index 69128740c14d..15b1ff5d96e7 100644 --- a/arch/powerpc/configs/adder875_defconfig +++ b/arch/powerpc/configs/adder875_defconfig @@ -70,3 +70,4 @@ CONFIG_DEBUG_KERNEL=y CONFIG_DETECT_HUNG_TASK=y CONFIG_DEBUG_INFO=y # CONFIG_RCU_CPU_STALL_DETECTOR is not set +CONFIG_CRC32_SLICEBY4=y diff --git a/arch/powerpc/configs/ep88xc_defconfig b/arch/powerpc/configs/ep88xc_defconfig index 219fd470ed22..b8a79d7ee89f 100644 --- a/arch/powerpc/configs/ep88xc_defconfig +++ b/arch/powerpc/configs/ep88xc_defconfig @@ -72,3 +72,4 @@ CONFIG_DEBUG_KERNEL=y CONFIG_DETECT_HUNG_TASK=y CONFIG_DEBUG_INFO=y # CONFIG_RCU_CPU_STALL_DETECTOR is not set +CONFIG_CRC32_SLICEBY4=y diff --git a/arch/powerpc/configs/mpc866_ads_defconfig b/arch/powerpc/configs/mpc866_ads_defconfig index 5c258823e694..d954e80c286a 100644 --- a/arch/powerpc/configs/mpc866_ads_defconfig +++ b/arch/powerpc/configs/mpc866_ads_defconfig @@ -55,3 +55,4 @@ CONFIG_PARTITION_ADVANCED=y CONFIG_CRC_CCITT=y # CONFIG_RCU_CPU_STALL_DETECTOR is not set # CONFIG_CRYPTO_ANSI_CPRNG is not set +CONFIG_CRC32_SLICEBY4=y diff --git a/arch/powerpc/configs/mpc885_ads_defconfig b/arch/powerpc/configs/mpc885_ads_defconfig index 9e146cdf63de..3f47d00a10c0 100644 --- a/arch/powerpc/configs/mpc885_ads_defconfig +++ b/arch/powerpc/configs/mpc885_ads_defconfig @@ -78,3 +78,4 @@ CONFIG_DEBUG_KERNEL=y CONFIG_DETECT_HUNG_TASK=y CONFIG_DEBUG_INFO=y # CONFIG_RCU_CPU_STALL_DETECTOR is not set +CONFIG_CRC32_SLICEBY4=y diff --git a/arch/powerpc/configs/tqm8xx_defconfig b/arch/powerpc/configs/tqm8xx_defconfig index 8616fde0896f..4b6f8bf104e0 100644 --- a/arch/powerpc/configs/tqm8xx_defconfig +++ b/arch/powerpc/configs/tqm8xx_defconfig @@ -84,3 +84,4 @@ CONFIG_DEBUG_KERNEL=y CONFIG_DETECT_HUNG_TASK=y CONFIG_DEBUG_INFO=y # CONFIG_RCU_CPU_STALL_DETECTOR is not set +CONFIG_CRC32_SLICEBY4=y -- cgit v1.2.3 From 8b52312880ecbc5beb40b313600f2903c16a59ed Mon Sep 17 00:00:00 2001 From: Zhao Qiang Date: Thu, 5 Dec 2013 14:00:03 +0800 Subject: powerpc/p1010rdb-pa: modify phy interrupt. It is not correct according to p1010rdb-pa user guide. So modify it. Signed-off-by: Zhao Qiang Signed-off-by: Scott Wood --- arch/powerpc/boot/dts/p1010rdb-pa.dtsi | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/boot/dts/p1010rdb-pa.dtsi b/arch/powerpc/boot/dts/p1010rdb-pa.dtsi index 4c5a7bf6579f..434fb2d58575 100644 --- a/arch/powerpc/boot/dts/p1010rdb-pa.dtsi +++ b/arch/powerpc/boot/dts/p1010rdb-pa.dtsi @@ -73,7 +73,7 @@ }; &phy0 { - interrupts = <3 1 0 0>; + interrupts = <1 1 0 0>; }; &phy1 { @@ -81,5 +81,5 @@ }; &phy2 { - interrupts = <2 1 0 0>; + interrupts = <4 1 0 0>; }; -- cgit v1.2.3 From 1e83bf875e1eb14f99b3ce1cb5580a09f18ac8af Mon Sep 17 00:00:00 2001 From: Christian Engelmayer Date: Sun, 15 Dec 2013 19:39:26 +0100 Subject: powerpc/sysdev: Fix a pci section mismatch for Book E Moved the following functions out of the __init section: arch/powerpc/sysdev/fsl_pci.c : fsl_add_bridge() arch/powerpc/sysdev/indirect_pci.c : setup_indirect_pci() Those are referenced by arch/powerpc/sysdev/fsl_pci.c : fsl_pci_probe() when compiling for Book E support. Signed-off-by: Christian Engelmayer Signed-off-by: Scott Wood --- arch/powerpc/sysdev/fsl_pci.c | 2 +- arch/powerpc/sysdev/indirect_pci.c | 6 ++---- 2 files changed, 3 insertions(+), 5 deletions(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c index 7066e5262468..e8be4344742b 100644 --- a/arch/powerpc/sysdev/fsl_pci.c +++ b/arch/powerpc/sysdev/fsl_pci.c @@ -454,7 +454,7 @@ void fsl_pcibios_fixup_bus(struct pci_bus *bus) } } -int __init fsl_add_bridge(struct platform_device *pdev, int is_primary) +int fsl_add_bridge(struct platform_device *pdev, int is_primary) { int len; struct pci_controller *hose; diff --git a/arch/powerpc/sysdev/indirect_pci.c b/arch/powerpc/sysdev/indirect_pci.c index c6c8b526a4f6..1f6c570d66d4 100644 --- a/arch/powerpc/sysdev/indirect_pci.c +++ b/arch/powerpc/sysdev/indirect_pci.c @@ -152,10 +152,8 @@ static struct pci_ops indirect_pci_ops = .write = indirect_write_config, }; -void __init -setup_indirect_pci(struct pci_controller* hose, - resource_size_t cfg_addr, - resource_size_t cfg_data, u32 flags) +void setup_indirect_pci(struct pci_controller *hose, resource_size_t cfg_addr, + resource_size_t cfg_data, u32 flags) { resource_size_t base = cfg_addr & PAGE_MASK; void __iomem *mbase; -- cgit v1.2.3 From 71a6fa17e1526d3f26f4711cc55d339f96c49a95 Mon Sep 17 00:00:00 2001 From: Wang Dongsheng Date: Tue, 17 Dec 2013 16:16:59 +0800 Subject: powerpc/fsl: add E6500 PVR and SPRN_PWRMGTCR0 define E6500 PVR and SPRN_PWRMGTCR0 will be used in subsequent pw20/altivec idle patches. Signed-off-by: Wang Dongsheng Signed-off-by: Scott Wood --- arch/powerpc/include/asm/reg.h | 2 ++ arch/powerpc/include/asm/reg_booke.h | 9 +++++++++ 2 files changed, 11 insertions(+) (limited to 'arch/powerpc') diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h index fa8388ed94c5..62b114e079cf 100644 --- a/arch/powerpc/include/asm/reg.h +++ b/arch/powerpc/include/asm/reg.h @@ -1075,6 +1075,8 @@ #define PVR_8560 0x80200000 #define PVR_VER_E500V1 0x8020 #define PVR_VER_E500V2 0x8021 +#define PVR_VER_E6500 0x8040 + /* * For the 8xx processors, all of them report the same PVR family for * the PowerPC core. The various versions of these processors must be diff --git a/arch/powerpc/include/asm/reg_booke.h b/arch/powerpc/include/asm/reg_booke.h index 1f7134dd0946..163c3b05a76e 100644 --- a/arch/powerpc/include/asm/reg_booke.h +++ b/arch/powerpc/include/asm/reg_booke.h @@ -171,6 +171,7 @@ #define SPRN_L2CSR1 0x3FA /* L2 Data Cache Control and Status Register 1 */ #define SPRN_DCCR 0x3FA /* Data Cache Cacheability Register */ #define SPRN_ICCR 0x3FB /* Instruction Cache Cacheability Register */ +#define SPRN_PWRMGTCR0 0x3FB /* Power management control register 0 */ #define SPRN_SVR 0x3FF /* System Version Register */ /* @@ -217,6 +218,14 @@ #define CCR1_DPC 0x00000100 /* Disable L1 I-Cache/D-Cache parity checking */ #define CCR1_TCS 0x00000080 /* Timer Clock Select */ +/* Bit definitions for PWRMGTCR0. */ +#define PWRMGTCR0_PW20_WAIT (1 << 14) /* PW20 state enable bit */ +#define PWRMGTCR0_PW20_ENT_SHIFT 8 +#define PWRMGTCR0_PW20_ENT 0x3F00 +#define PWRMGTCR0_AV_IDLE_PD_EN (1 << 22) /* Altivec idle enable */ +#define PWRMGTCR0_AV_IDLE_CNT_SHIFT 16 +#define PWRMGTCR0_AV_IDLE_CNT 0x3F0000 + /* Bit definitions for the MCSR. */ #define MCSR_MCS 0x80000000 /* Machine Check Summary */ #define MCSR_IB 0x40000000 /* Instruction PLB Error */ -- cgit v1.2.3 From 202e059ce34d5c5e3ff8a542866c280d575ccb17 Mon Sep 17 00:00:00 2001 From: Wang Dongsheng Date: Tue, 17 Dec 2013 16:17:00 +0800 Subject: powerpc/85xx: add hardware automatically enter altivec idle state Each core's AltiVec unit may be placed into a power savings mode by turning off power to the unit. Core hardware will automatically power down the AltiVec unit after no AltiVec instructions have executed in N cycles. The AltiVec power-control is triggered by hardware. Signed-off-by: Wang Dongsheng Signed-off-by: Scott Wood --- arch/powerpc/kernel/cpu_setup_fsl_booke.S | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'arch/powerpc') diff --git a/arch/powerpc/kernel/cpu_setup_fsl_booke.S b/arch/powerpc/kernel/cpu_setup_fsl_booke.S index fa6862db8a02..26c09db2ec20 100644 --- a/arch/powerpc/kernel/cpu_setup_fsl_booke.S +++ b/arch/powerpc/kernel/cpu_setup_fsl_booke.S @@ -53,6 +53,25 @@ _GLOBAL(__e500_dcache_setup) isync blr +/* + * FIXME - we haven't yet done testing to determine a reasonable default + * value for AV_WAIT_IDLE_BIT. + */ +#define AV_WAIT_IDLE_BIT 50 /* 1ms, TB frequency is 41.66MHZ */ +_GLOBAL(setup_altivec_idle) + mfspr r3, SPRN_PWRMGTCR0 + + /* Enable Altivec Idle */ + oris r3, r3, PWRMGTCR0_AV_IDLE_PD_EN@h + li r11, AV_WAIT_IDLE_BIT + + /* Set Automatic AltiVec Idle Count */ + rlwimi r3, r11, PWRMGTCR0_AV_IDLE_CNT_SHIFT, PWRMGTCR0_AV_IDLE_CNT + + mtspr SPRN_PWRMGTCR0, r3 + + blr + _GLOBAL(__setup_cpu_e6500) mflr r6 #ifdef CONFIG_PPC64 @@ -64,6 +83,7 @@ _GLOBAL(__setup_cpu_e6500) bl .setup_lrat_ivor 1: #endif + bl setup_altivec_idle bl __setup_cpu_e5500 mtlr r6 blr @@ -131,6 +151,7 @@ _GLOBAL(__restore_cpu_e6500) beq 1f bl .setup_lrat_ivor 1: + bl .setup_altivec_idle bl __restore_cpu_e5500 mtlr r5 blr -- cgit v1.2.3 From 1d47ddf7c3725e889763b1fffa70a04e1061940b Mon Sep 17 00:00:00 2001 From: Wang Dongsheng Date: Tue, 17 Dec 2013 16:17:01 +0800 Subject: powerpc/85xx: add hardware automatically enter pw20 state Using hardware features make core automatically enter PW20 state. Set a TB count to hardware, the effective count begins when PW10 is entered. When the effective period has expired, the core will proceed from PW10 to PW20 if no exit conditions have occurred during the period. Signed-off-by: Wang Dongsheng Signed-off-by: Scott Wood --- arch/powerpc/kernel/cpu_setup_fsl_booke.S | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'arch/powerpc') diff --git a/arch/powerpc/kernel/cpu_setup_fsl_booke.S b/arch/powerpc/kernel/cpu_setup_fsl_booke.S index 26c09db2ec20..cc2d8962e090 100644 --- a/arch/powerpc/kernel/cpu_setup_fsl_booke.S +++ b/arch/powerpc/kernel/cpu_setup_fsl_booke.S @@ -53,6 +53,25 @@ _GLOBAL(__e500_dcache_setup) isync blr +/* + * FIXME - we haven't yet done testing to determine a reasonable default + * value for PW20_WAIT_IDLE_BIT. + */ +#define PW20_WAIT_IDLE_BIT 50 /* 1ms, TB frequency is 41.66MHZ */ +_GLOBAL(setup_pw20_idle) + mfspr r3, SPRN_PWRMGTCR0 + + /* Set PW20_WAIT bit, enable pw20 state*/ + ori r3, r3, PWRMGTCR0_PW20_WAIT + li r11, PW20_WAIT_IDLE_BIT + + /* Set Automatic PW20 Core Idle Count */ + rlwimi r3, r11, PWRMGTCR0_PW20_ENT_SHIFT, PWRMGTCR0_PW20_ENT + + mtspr SPRN_PWRMGTCR0, r3 + + blr + /* * FIXME - we haven't yet done testing to determine a reasonable default * value for AV_WAIT_IDLE_BIT. @@ -83,6 +102,7 @@ _GLOBAL(__setup_cpu_e6500) bl .setup_lrat_ivor 1: #endif + bl setup_pw20_idle bl setup_altivec_idle bl __setup_cpu_e5500 mtlr r6 @@ -151,6 +171,7 @@ _GLOBAL(__restore_cpu_e6500) beq 1f bl .setup_lrat_ivor 1: + bl .setup_pw20_idle bl .setup_altivec_idle bl __restore_cpu_e5500 mtlr r5 -- cgit v1.2.3 From a7189483f03d4c4b93219ff27a2e0a01716abd21 Mon Sep 17 00:00:00 2001 From: Wang Dongsheng Date: Tue, 17 Dec 2013 16:17:02 +0800 Subject: powerpc/85xx: add sysfs for pw20 state and altivec idle Add a sys interface to enable/diable pw20 state or altivec idle, and control the wait entry time. Enable/Disable interface: 0, disable. 1, enable. /sys/devices/system/cpu/cpuX/pw20_state /sys/devices/system/cpu/cpuX/altivec_idle Set wait time interface:(Nanosecond) /sys/devices/system/cpu/cpuX/pw20_wait_time /sys/devices/system/cpu/cpuX/altivec_idle_wait_time Example: Base on TBfreq is 41MHZ. 1~48(ns): TB[63] 49~97(ns): TB[62] 98~195(ns): TB[61] 196~390(ns): TB[60] 391~780(ns): TB[59] 781~1560(ns): TB[58] ... Signed-off-by: Wang Dongsheng [scottwood@freescale.com: change ifdef] Signed-off-by: Scott Wood --- arch/powerpc/kernel/sysfs.c | 316 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 316 insertions(+) (limited to 'arch/powerpc') diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c index cad777eb613a..d4a43e64a6a9 100644 --- a/arch/powerpc/kernel/sysfs.c +++ b/arch/powerpc/kernel/sysfs.c @@ -86,6 +86,304 @@ __setup("smt-snooze-delay=", setup_smt_snooze_delay); #endif /* CONFIG_PPC64 */ +#ifdef CONFIG_PPC_FSL_BOOK3E +#define MAX_BIT 63 + +static u64 pw20_wt; +static u64 altivec_idle_wt; + +static unsigned int get_idle_ticks_bit(u64 ns) +{ + u64 cycle; + + if (ns >= 10000) + cycle = div_u64(ns + 500, 1000) * tb_ticks_per_usec; + else + cycle = div_u64(ns * tb_ticks_per_usec, 1000); + + if (!cycle) + return 0; + + return ilog2(cycle); +} + +static void do_show_pwrmgtcr0(void *val) +{ + u32 *value = val; + + *value = mfspr(SPRN_PWRMGTCR0); +} + +static ssize_t show_pw20_state(struct device *dev, + struct device_attribute *attr, char *buf) +{ + u32 value; + unsigned int cpu = dev->id; + + smp_call_function_single(cpu, do_show_pwrmgtcr0, &value, 1); + + value &= PWRMGTCR0_PW20_WAIT; + + return sprintf(buf, "%u\n", value ? 1 : 0); +} + +static void do_store_pw20_state(void *val) +{ + u32 *value = val; + u32 pw20_state; + + pw20_state = mfspr(SPRN_PWRMGTCR0); + + if (*value) + pw20_state |= PWRMGTCR0_PW20_WAIT; + else + pw20_state &= ~PWRMGTCR0_PW20_WAIT; + + mtspr(SPRN_PWRMGTCR0, pw20_state); +} + +static ssize_t store_pw20_state(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + u32 value; + unsigned int cpu = dev->id; + + if (kstrtou32(buf, 0, &value)) + return -EINVAL; + + if (value > 1) + return -EINVAL; + + smp_call_function_single(cpu, do_store_pw20_state, &value, 1); + + return count; +} + +static ssize_t show_pw20_wait_time(struct device *dev, + struct device_attribute *attr, char *buf) +{ + u32 value; + u64 tb_cycle = 1; + u64 time; + + unsigned int cpu = dev->id; + + if (!pw20_wt) { + smp_call_function_single(cpu, do_show_pwrmgtcr0, &value, 1); + value = (value & PWRMGTCR0_PW20_ENT) >> + PWRMGTCR0_PW20_ENT_SHIFT; + + tb_cycle = (tb_cycle << (MAX_BIT - value + 1)); + /* convert ms to ns */ + if (tb_ticks_per_usec > 1000) { + time = div_u64(tb_cycle, tb_ticks_per_usec / 1000); + } else { + u32 rem_us; + + time = div_u64_rem(tb_cycle, tb_ticks_per_usec, + &rem_us); + time = time * 1000 + rem_us * 1000 / tb_ticks_per_usec; + } + } else { + time = pw20_wt; + } + + return sprintf(buf, "%llu\n", time > 0 ? time : 0); +} + +static void set_pw20_wait_entry_bit(void *val) +{ + u32 *value = val; + u32 pw20_idle; + + pw20_idle = mfspr(SPRN_PWRMGTCR0); + + /* Set Automatic PW20 Core Idle Count */ + /* clear count */ + pw20_idle &= ~PWRMGTCR0_PW20_ENT; + + /* set count */ + pw20_idle |= ((MAX_BIT - *value) << PWRMGTCR0_PW20_ENT_SHIFT); + + mtspr(SPRN_PWRMGTCR0, pw20_idle); +} + +static ssize_t store_pw20_wait_time(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + u32 entry_bit; + u64 value; + + unsigned int cpu = dev->id; + + if (kstrtou64(buf, 0, &value)) + return -EINVAL; + + if (!value) + return -EINVAL; + + entry_bit = get_idle_ticks_bit(value); + if (entry_bit > MAX_BIT) + return -EINVAL; + + pw20_wt = value; + + smp_call_function_single(cpu, set_pw20_wait_entry_bit, + &entry_bit, 1); + + return count; +} + +static ssize_t show_altivec_idle(struct device *dev, + struct device_attribute *attr, char *buf) +{ + u32 value; + unsigned int cpu = dev->id; + + smp_call_function_single(cpu, do_show_pwrmgtcr0, &value, 1); + + value &= PWRMGTCR0_AV_IDLE_PD_EN; + + return sprintf(buf, "%u\n", value ? 1 : 0); +} + +static void do_store_altivec_idle(void *val) +{ + u32 *value = val; + u32 altivec_idle; + + altivec_idle = mfspr(SPRN_PWRMGTCR0); + + if (*value) + altivec_idle |= PWRMGTCR0_AV_IDLE_PD_EN; + else + altivec_idle &= ~PWRMGTCR0_AV_IDLE_PD_EN; + + mtspr(SPRN_PWRMGTCR0, altivec_idle); +} + +static ssize_t store_altivec_idle(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + u32 value; + unsigned int cpu = dev->id; + + if (kstrtou32(buf, 0, &value)) + return -EINVAL; + + if (value > 1) + return -EINVAL; + + smp_call_function_single(cpu, do_store_altivec_idle, &value, 1); + + return count; +} + +static ssize_t show_altivec_idle_wait_time(struct device *dev, + struct device_attribute *attr, char *buf) +{ + u32 value; + u64 tb_cycle = 1; + u64 time; + + unsigned int cpu = dev->id; + + if (!altivec_idle_wt) { + smp_call_function_single(cpu, do_show_pwrmgtcr0, &value, 1); + value = (value & PWRMGTCR0_AV_IDLE_CNT) >> + PWRMGTCR0_AV_IDLE_CNT_SHIFT; + + tb_cycle = (tb_cycle << (MAX_BIT - value + 1)); + /* convert ms to ns */ + if (tb_ticks_per_usec > 1000) { + time = div_u64(tb_cycle, tb_ticks_per_usec / 1000); + } else { + u32 rem_us; + + time = div_u64_rem(tb_cycle, tb_ticks_per_usec, + &rem_us); + time = time * 1000 + rem_us * 1000 / tb_ticks_per_usec; + } + } else { + time = altivec_idle_wt; + } + + return sprintf(buf, "%llu\n", time > 0 ? time : 0); +} + +static void set_altivec_idle_wait_entry_bit(void *val) +{ + u32 *value = val; + u32 altivec_idle; + + altivec_idle = mfspr(SPRN_PWRMGTCR0); + + /* Set Automatic AltiVec Idle Count */ + /* clear count */ + altivec_idle &= ~PWRMGTCR0_AV_IDLE_CNT; + + /* set count */ + altivec_idle |= ((MAX_BIT - *value) << PWRMGTCR0_AV_IDLE_CNT_SHIFT); + + mtspr(SPRN_PWRMGTCR0, altivec_idle); +} + +static ssize_t store_altivec_idle_wait_time(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + u32 entry_bit; + u64 value; + + unsigned int cpu = dev->id; + + if (kstrtou64(buf, 0, &value)) + return -EINVAL; + + if (!value) + return -EINVAL; + + entry_bit = get_idle_ticks_bit(value); + if (entry_bit > MAX_BIT) + return -EINVAL; + + altivec_idle_wt = value; + + smp_call_function_single(cpu, set_altivec_idle_wait_entry_bit, + &entry_bit, 1); + + return count; +} + +/* + * Enable/Disable interface: + * 0, disable. 1, enable. + */ +static DEVICE_ATTR(pw20_state, 0600, show_pw20_state, store_pw20_state); +static DEVICE_ATTR(altivec_idle, 0600, show_altivec_idle, store_altivec_idle); + +/* + * Set wait time interface:(Nanosecond) + * Example: Base on TBfreq is 41MHZ. + * 1~48(ns): TB[63] + * 49~97(ns): TB[62] + * 98~195(ns): TB[61] + * 196~390(ns): TB[60] + * 391~780(ns): TB[59] + * 781~1560(ns): TB[58] + * ... + */ +static DEVICE_ATTR(pw20_wait_time, 0600, + show_pw20_wait_time, + store_pw20_wait_time); +static DEVICE_ATTR(altivec_idle_wait_time, 0600, + show_altivec_idle_wait_time, + store_altivec_idle_wait_time); +#endif + /* * Enabling PMCs will slow partition context switch times so we only do * it the first time we write to the PMCs. @@ -425,6 +723,15 @@ static void register_cpu_online(unsigned int cpu) device_create_file(s, &dev_attr_pir); #endif /* CONFIG_PPC64 */ +#ifdef CONFIG_PPC_FSL_BOOK3E + if (PVR_VER(cur_cpu_spec->pvr_value) == PVR_VER_E6500) { + device_create_file(s, &dev_attr_pw20_state); + device_create_file(s, &dev_attr_pw20_wait_time); + + device_create_file(s, &dev_attr_altivec_idle); + device_create_file(s, &dev_attr_altivec_idle_wait_time); + } +#endif cacheinfo_cpu_online(cpu); } @@ -497,6 +804,15 @@ static void unregister_cpu_online(unsigned int cpu) device_remove_file(s, &dev_attr_pir); #endif /* CONFIG_PPC64 */ +#ifdef CONFIG_PPC_FSL_BOOK3E + if (PVR_VER(cur_cpu_spec->pvr_value) == PVR_VER_E6500) { + device_remove_file(s, &dev_attr_pw20_state); + device_remove_file(s, &dev_attr_pw20_wait_time); + + device_remove_file(s, &dev_attr_altivec_idle); + device_remove_file(s, &dev_attr_altivec_idle_wait_time); + } +#endif cacheinfo_cpu_offline(cpu); } -- cgit v1.2.3 From 1e7bf895cc62264dc8f56012943e7677551ec964 Mon Sep 17 00:00:00 2001 From: Wang Dongsheng Date: Wed, 18 Dec 2013 16:39:23 +0800 Subject: powerpc/p1022ds: fix rtc compatible string RTC Hardware(ds3232) and rtc compatible string does not match. Change "dallas,ds1339" to "dallas,ds3232". Signed-off-by: Wang Dongsheng Signed-off-by: Scott Wood --- arch/powerpc/boot/dts/p1022ds.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/boot/dts/p1022ds.dtsi b/arch/powerpc/boot/dts/p1022ds.dtsi index 873da350d01b..5725058e7d7f 100644 --- a/arch/powerpc/boot/dts/p1022ds.dtsi +++ b/arch/powerpc/boot/dts/p1022ds.dtsi @@ -146,7 +146,7 @@ */ }; rtc@68 { - compatible = "dallas,ds1339"; + compatible = "dallas,ds3232"; reg = <0x68>; }; adt7461@4c { -- cgit v1.2.3 From 7f83a50ce3ae157619505d7c1464c0c4ff0db058 Mon Sep 17 00:00:00 2001 From: Wang Dongsheng Date: Wed, 18 Dec 2013 16:39:24 +0800 Subject: powerpc/p1022ds: add a interrupt for rtc node Add an external interrupt for rtc node. Signed-off-by: Wang Dongsheng Signed-off-by: Scott Wood --- arch/powerpc/boot/dts/p1022ds.dtsi | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/powerpc') diff --git a/arch/powerpc/boot/dts/p1022ds.dtsi b/arch/powerpc/boot/dts/p1022ds.dtsi index 5725058e7d7f..957e0dc1dc0f 100644 --- a/arch/powerpc/boot/dts/p1022ds.dtsi +++ b/arch/powerpc/boot/dts/p1022ds.dtsi @@ -148,6 +148,7 @@ rtc@68 { compatible = "dallas,ds3232"; reg = <0x68>; + interrupts = <0x1 0x1 0 0>; }; adt7461@4c { compatible = "adi,adt7461"; -- cgit v1.2.3 From 0fd79588f9e4e544b2ef2b0265e62b4c04fc1003 Mon Sep 17 00:00:00 2001 From: Wang Dongsheng Date: Mon, 6 Jan 2014 13:23:30 +0800 Subject: powerpc/mpic_timer: fix the time is not accurate caused by GTCRR toggle bit When the timer GTCCR toggle bit is inverted, we calculated the rest of the time is not accurate. So we need to ignore this bit. Signed-off-by: Wang Dongsheng Signed-off-by: Scott Wood --- arch/powerpc/sysdev/mpic_timer.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'arch/powerpc') diff --git a/arch/powerpc/sysdev/mpic_timer.c b/arch/powerpc/sysdev/mpic_timer.c index 22d7d57eead9..70dcf9c5b8fb 100644 --- a/arch/powerpc/sysdev/mpic_timer.c +++ b/arch/powerpc/sysdev/mpic_timer.c @@ -41,6 +41,7 @@ #define MPIC_TIMER_TCR_ROVR_OFFSET 24 #define TIMER_STOP 0x80000000 +#define GTCCR_TOG 0x80000000 #define TIMERS_PER_GROUP 4 #define MAX_TICKS (~0U >> 1) #define MAX_TICKS_CASCADE (~0U) @@ -327,11 +328,13 @@ void mpic_get_remain_time(struct mpic_timer *handle, struct timeval *time) casc_priv = priv->timer[handle->num].cascade_handle; if (casc_priv) { tmp_ticks = in_be32(&priv->regs[handle->num].gtccr); + tmp_ticks &= ~GTCCR_TOG; ticks = ((u64)tmp_ticks & UINT_MAX) * (u64)MAX_TICKS_CASCADE; tmp_ticks = in_be32(&priv->regs[handle->num - 1].gtccr); ticks += tmp_ticks; } else { ticks = in_be32(&priv->regs[handle->num].gtccr); + ticks &= ~GTCCR_TOG; } convert_ticks_to_time(priv, ticks, time); -- cgit v1.2.3 From d2dc13b5339c657e526c405888df69d99322a016 Mon Sep 17 00:00:00 2001 From: Wang Dongsheng Date: Mon, 6 Jan 2014 13:23:31 +0800 Subject: powerpc/mpic_timer: fix convert ticks to time subtraction overflow In some cases tmp_sec may be greater than ticks, because in the process of calculation ticks and tmp_sec will be rounded. Signed-off-by: Wang Dongsheng Signed-off-by: Scott Wood --- arch/powerpc/sysdev/mpic_timer.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/sysdev/mpic_timer.c b/arch/powerpc/sysdev/mpic_timer.c index 70dcf9c5b8fb..9d9b06217f8b 100644 --- a/arch/powerpc/sysdev/mpic_timer.c +++ b/arch/powerpc/sysdev/mpic_timer.c @@ -97,8 +97,11 @@ static void convert_ticks_to_time(struct timer_group_priv *priv, time->tv_sec = (__kernel_time_t)div_u64(ticks, priv->timerfreq); tmp_sec = (u64)time->tv_sec * (u64)priv->timerfreq; - time->tv_usec = (__kernel_suseconds_t) - div_u64((ticks - tmp_sec) * 1000000, priv->timerfreq); + time->tv_usec = 0; + + if (tmp_sec <= ticks) + time->tv_usec = (__kernel_suseconds_t) + div_u64((ticks - tmp_sec) * 1000000, priv->timerfreq); return; } -- cgit v1.2.3 From 7c732cba3d9312882e82d91d5948261dfd5c8fe6 Mon Sep 17 00:00:00 2001 From: Kevin Hao Date: Tue, 24 Dec 2013 15:12:03 +0800 Subject: powerpc/fsl_booke: protect the access to MAS7 The e500v1 doesn't implement the MAS7, so we should avoid to access this register on that implementations. In the current kernel, the access to MAS7 are protected by either CONFIG_PHYS_64BIT or MMU_FTR_BIG_PHYS. Since some code are executed before the code patching, we have to use CONFIG_PHYS_64BIT in these cases. Signed-off-by: Kevin Hao Signed-off-by: Scott Wood --- arch/powerpc/kernel/head_fsl_booke.S | 2 ++ arch/powerpc/mm/hugetlbpage-book3e.c | 3 ++- 2 files changed, 4 insertions(+), 1 deletion(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S index f45726a1d963..09921a5197c6 100644 --- a/arch/powerpc/kernel/head_fsl_booke.S +++ b/arch/powerpc/kernel/head_fsl_booke.S @@ -82,7 +82,9 @@ _ENTRY(_start); and r19,r3,r18 /* r19 = page offset */ andc r31,r20,r18 /* r31 = page base */ or r31,r31,r19 /* r31 = devtree phys addr */ +#ifdef CONFIG_PHYS_64BIT mfspr r30,SPRN_MAS7 +#endif li r25,0 /* phys kernel start (low) */ li r24,0 /* CPU number */ diff --git a/arch/powerpc/mm/hugetlbpage-book3e.c b/arch/powerpc/mm/hugetlbpage-book3e.c index 74551b5e41e5..646c4bffaeba 100644 --- a/arch/powerpc/mm/hugetlbpage-book3e.c +++ b/arch/powerpc/mm/hugetlbpage-book3e.c @@ -103,7 +103,8 @@ void book3e_hugetlb_preload(struct vm_area_struct *vma, unsigned long ea, if (mmu_has_feature(MMU_FTR_USE_PAIRED_MAS)) { mtspr(SPRN_MAS7_MAS3, mas7_3); } else { - mtspr(SPRN_MAS7, upper_32_bits(mas7_3)); + if (mmu_has_feature(MMU_FTR_BIG_PHYS)) + mtspr(SPRN_MAS7, upper_32_bits(mas7_3)); mtspr(SPRN_MAS3, lower_32_bits(mas7_3)); } -- cgit v1.2.3 From 99739611e816716d912ae89a4354237fc39745a6 Mon Sep 17 00:00:00 2001 From: Kevin Hao Date: Tue, 24 Dec 2013 15:12:04 +0800 Subject: powerpc/fsl_booke: introduce get_phys_addr function Move the codes which translate a effective address to physical address to a separate function. So it can be reused by other code. Signed-off-by: Kevin Hao Signed-off-by: Scott Wood --- arch/powerpc/kernel/head_fsl_booke.S | 50 +++++++++++++++++++++--------------- 1 file changed, 30 insertions(+), 20 deletions(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S index 09921a5197c6..196950f29c00 100644 --- a/arch/powerpc/kernel/head_fsl_booke.S +++ b/arch/powerpc/kernel/head_fsl_booke.S @@ -65,26 +65,9 @@ _ENTRY(_start); nop /* Translate device tree address to physical, save in r30/r31 */ - mfmsr r16 - mfspr r17,SPRN_PID - rlwinm r17,r17,16,0x3fff0000 /* turn PID into MAS6[SPID] */ - rlwimi r17,r16,28,0x00000001 /* turn MSR[DS] into MAS6[SAS] */ - mtspr SPRN_MAS6,r17 - - tlbsx 0,r3 /* must succeed */ - - mfspr r16,SPRN_MAS1 - mfspr r20,SPRN_MAS3 - rlwinm r17,r16,25,0x1f /* r17 = log2(page size) */ - li r18,1024 - slw r18,r18,r17 /* r18 = page size */ - addi r18,r18,-1 - and r19,r3,r18 /* r19 = page offset */ - andc r31,r20,r18 /* r31 = page base */ - or r31,r31,r19 /* r31 = devtree phys addr */ -#ifdef CONFIG_PHYS_64BIT - mfspr r30,SPRN_MAS7 -#endif + bl get_phys_addr + mr r30,r3 + mr r31,r4 li r25,0 /* phys kernel start (low) */ li r24,0 /* CPU number */ @@ -857,6 +840,33 @@ KernelSPE: #endif /* CONFIG_SPE */ +/* + * Translate the effec addr in r3 to phys addr. The phys addr will be put + * into r3(higher 32bit) and r4(lower 32bit) + */ +get_phys_addr: + mfmsr r8 + mfspr r9,SPRN_PID + rlwinm r9,r9,16,0x3fff0000 /* turn PID into MAS6[SPID] */ + rlwimi r9,r8,28,0x00000001 /* turn MSR[DS] into MAS6[SAS] */ + mtspr SPRN_MAS6,r9 + + tlbsx 0,r3 /* must succeed */ + + mfspr r8,SPRN_MAS1 + mfspr r12,SPRN_MAS3 + rlwinm r9,r8,25,0x1f /* r9 = log2(page size) */ + li r10,1024 + slw r10,r10,r9 /* r10 = page size */ + addi r10,r10,-1 + and r11,r3,r10 /* r11 = page offset */ + andc r4,r12,r10 /* r4 = page base */ + or r4,r4,r11 /* r4 = devtree phys addr */ +#ifdef CONFIG_PHYS_64BIT + mfspr r3,SPRN_MAS7 +#endif + blr + /* * Global functions */ -- cgit v1.2.3 From 1c49abec677c7ff495837dbaafad8e12f09c29fc Mon Sep 17 00:00:00 2001 From: Kevin Hao Date: Tue, 24 Dec 2013 15:12:05 +0800 Subject: powerpc: introduce macro LOAD_REG_ADDR_PIC This is used to get the address of a variable when the kernel is not running at the linked or relocated address. Signed-off-by: Kevin Hao Signed-off-by: Scott Wood --- arch/powerpc/include/asm/ppc_asm.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'arch/powerpc') diff --git a/arch/powerpc/include/asm/ppc_asm.h b/arch/powerpc/include/asm/ppc_asm.h index f595b98079ee..1279c59624ed 100644 --- a/arch/powerpc/include/asm/ppc_asm.h +++ b/arch/powerpc/include/asm/ppc_asm.h @@ -295,6 +295,11 @@ n: * you want to access various offsets within it). On ppc32 this is * identical to LOAD_REG_IMMEDIATE. * + * LOAD_REG_ADDR_PIC(rn, name) + * Loads the address of label 'name' into register 'run'. Use this when + * the kernel doesn't run at the linked or relocated address. Please + * note that this macro will clobber the lr register. + * * LOAD_REG_ADDRBASE(rn, name) * ADDROFF(name) * LOAD_REG_ADDRBASE loads part of the address of label 'name' into @@ -305,6 +310,14 @@ n: * LOAD_REG_ADDRBASE(rX, name) * ld rY,ADDROFF(name)(rX) */ + +/* Be careful, this will clobber the lr register. */ +#define LOAD_REG_ADDR_PIC(reg, name) \ + bl 0f; \ +0: mflr reg; \ + addis reg,reg,(name - 0b)@ha; \ + addi reg,reg,(name - 0b)@l; + #ifdef __powerpc64__ #define LOAD_REG_IMMEDIATE(reg,expr) \ lis reg,(expr)@highest; \ -- cgit v1.2.3 From dd189692d40948d6445bbaeb8cb9bf9d15f54dc6 Mon Sep 17 00:00:00 2001 From: Kevin Hao Date: Tue, 24 Dec 2013 15:12:06 +0800 Subject: powerpc: enable the relocatable support for the fsl booke 32bit kernel This is based on the codes in the head_44x.S. The difference is that the init tlb size we used is 64M. With this patch we can only load the kernel at address between memstart_addr ~ memstart_addr + 64M. We will fix this restriction in the following patches. Signed-off-by: Kevin Hao Signed-off-by: Scott Wood --- arch/powerpc/Kconfig | 2 +- arch/powerpc/kernel/fsl_booke_entry_mapping.S | 2 ++ arch/powerpc/kernel/head_fsl_booke.S | 34 +++++++++++++++++++++++++++ arch/powerpc/mm/fsl_booke_mmu.c | 28 ++++++++++++++++++++++ 4 files changed, 65 insertions(+), 1 deletion(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index f0a893142cee..4bb52e6488ea 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -884,7 +884,7 @@ config DYNAMIC_MEMSTART config RELOCATABLE bool "Build a relocatable kernel" - depends on ADVANCED_OPTIONS && FLATMEM && 44x + depends on ADVANCED_OPTIONS && FLATMEM && (44x || FSL_BOOKE) select NONSTATIC_KERNEL help This builds a kernel image that is capable of running at the diff --git a/arch/powerpc/kernel/fsl_booke_entry_mapping.S b/arch/powerpc/kernel/fsl_booke_entry_mapping.S index a92c79be2728..f22e7e44fbf3 100644 --- a/arch/powerpc/kernel/fsl_booke_entry_mapping.S +++ b/arch/powerpc/kernel/fsl_booke_entry_mapping.S @@ -176,6 +176,8 @@ skpinv: addi r6,r6,1 /* Increment */ /* 7. Jump to KERNELBASE mapping */ lis r6,(KERNELBASE & ~0xfff)@h ori r6,r6,(KERNELBASE & ~0xfff)@l + rlwinm r7,r25,0,0x03ffffff + add r6,r7,r6 #elif defined(ENTRY_MAPPING_KEXEC_SETUP) /* diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S index 196950f29c00..19bd574bda9d 100644 --- a/arch/powerpc/kernel/head_fsl_booke.S +++ b/arch/powerpc/kernel/head_fsl_booke.S @@ -73,6 +73,30 @@ _ENTRY(_start); li r24,0 /* CPU number */ li r23,0 /* phys kernel start (high) */ +#ifdef CONFIG_RELOCATABLE + LOAD_REG_ADDR_PIC(r3, _stext) /* Get our current runtime base */ + + /* Translate _stext address to physical, save in r23/r25 */ + bl get_phys_addr + mr r23,r3 + mr r25,r4 + + /* + * We have the runtime (virutal) address of our base. + * We calculate our shift of offset from a 64M page. + * We could map the 64M page we belong to at PAGE_OFFSET and + * get going from there. + */ + lis r4,KERNELBASE@h + ori r4,r4,KERNELBASE@l + rlwinm r6,r25,0,0x3ffffff /* r6 = PHYS_START % 64M */ + rlwinm r5,r4,0,0x3ffffff /* r5 = KERNELBASE % 64M */ + subf r3,r5,r6 /* r3 = r6 - r5 */ + add r3,r4,r3 /* Required Virtual Address */ + + bl relocate +#endif + /* We try to not make any assumptions about how the boot loader * setup or used the TLBs. We invalidate all mappings from the * boot loader and load a single entry in TLB1[0] to map the @@ -182,6 +206,16 @@ _ENTRY(__early_start) bl early_init +#ifdef CONFIG_RELOCATABLE +#ifdef CONFIG_PHYS_64BIT + mr r3,r23 + mr r4,r25 +#else + mr r3,r25 +#endif + bl relocate_init +#endif + #ifdef CONFIG_DYNAMIC_MEMSTART lis r3,kernstart_addr@ha la r3,kernstart_addr@l(r3) diff --git a/arch/powerpc/mm/fsl_booke_mmu.c b/arch/powerpc/mm/fsl_booke_mmu.c index 07ba45b0f07c..ce4a1163ddd3 100644 --- a/arch/powerpc/mm/fsl_booke_mmu.c +++ b/arch/powerpc/mm/fsl_booke_mmu.c @@ -241,4 +241,32 @@ void setup_initial_memory_limit(phys_addr_t first_memblock_base, /* 64M mapped initially according to head_fsl_booke.S */ memblock_set_current_limit(min_t(u64, limit, 0x04000000)); } + +#ifdef CONFIG_RELOCATABLE +notrace void __init relocate_init(phys_addr_t start) +{ + unsigned long base = KERNELBASE; + + /* + * Relocatable kernel support based on processing of dynamic + * relocation entries. + * Compute the virt_phys_offset : + * virt_phys_offset = stext.run - kernstart_addr + * + * stext.run = (KERNELBASE & ~0x3ffffff) + (kernstart_addr & 0x3ffffff) + * When we relocate, we have : + * + * (kernstart_addr & 0x3ffffff) = (stext.run & 0x3ffffff) + * + * hence: + * virt_phys_offset = (KERNELBASE & ~0x3ffffff) - + * (kernstart_addr & ~0x3ffffff) + * + */ + kernstart_addr = start; + start &= ~0x3ffffff; + base &= ~0x3ffffff; + virt_phys_offset = base - start; +} +#endif #endif -- cgit v1.2.3 From 78a235efdc42ff363de81fdbc171385e8b86b69b Mon Sep 17 00:00:00 2001 From: Kevin Hao Date: Tue, 24 Dec 2013 15:12:07 +0800 Subject: powerpc/fsl_booke: set the tlb entry for the kernel address in AS1 We use the tlb1 entries to map low mem to the kernel space. In the current code, it assumes that the first tlb entry would cover the kernel image. But this is not true for some special cases, such as when we run a relocatable kernel above the 64M or set CONFIG_KERNEL_START above 64M. So we choose to switch to address space 1 before setting these tlb entries. Signed-off-by: Kevin Hao Signed-off-by: Scott Wood --- arch/powerpc/kernel/head_fsl_booke.S | 81 ++++++++++++++++++++++++++++++++++++ arch/powerpc/mm/fsl_booke_mmu.c | 2 + arch/powerpc/mm/mmu_decl.h | 2 + 3 files changed, 85 insertions(+) (limited to 'arch/powerpc') diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S index 19bd574bda9d..75f0223e6d0d 100644 --- a/arch/powerpc/kernel/head_fsl_booke.S +++ b/arch/powerpc/kernel/head_fsl_booke.S @@ -1156,6 +1156,87 @@ __secondary_hold_acknowledge: .long -1 #endif +/* + * Create a tlb entry with the same effective and physical address as + * the tlb entry used by the current running code. But set the TS to 1. + * Then switch to the address space 1. It will return with the r3 set to + * the ESEL of the new created tlb. + */ +_GLOBAL(switch_to_as1) + mflr r5 + + /* Find a entry not used */ + mfspr r3,SPRN_TLB1CFG + andi. r3,r3,0xfff + mfspr r4,SPRN_PID + rlwinm r4,r4,16,0x3fff0000 /* turn PID into MAS6[SPID] */ + mtspr SPRN_MAS6,r4 +1: lis r4,0x1000 /* Set MAS0(TLBSEL) = 1 */ + addi r3,r3,-1 + rlwimi r4,r3,16,4,15 /* Setup MAS0 = TLBSEL | ESEL(r3) */ + mtspr SPRN_MAS0,r4 + tlbre + mfspr r4,SPRN_MAS1 + andis. r4,r4,MAS1_VALID@h + bne 1b + + /* Get the tlb entry used by the current running code */ + bl 0f +0: mflr r4 + tlbsx 0,r4 + + mfspr r4,SPRN_MAS1 + ori r4,r4,MAS1_TS /* Set the TS = 1 */ + mtspr SPRN_MAS1,r4 + + mfspr r4,SPRN_MAS0 + rlwinm r4,r4,0,~MAS0_ESEL_MASK + rlwimi r4,r3,16,4,15 /* Setup MAS0 = TLBSEL | ESEL(r3) */ + mtspr SPRN_MAS0,r4 + tlbwe + isync + sync + + mfmsr r4 + ori r4,r4,MSR_IS | MSR_DS + mtspr SPRN_SRR0,r5 + mtspr SPRN_SRR1,r4 + sync + rfi + +/* + * Restore to the address space 0 and also invalidate the tlb entry created + * by switch_to_as1. +*/ +_GLOBAL(restore_to_as0) + mflr r0 + + bl 0f +0: mflr r9 + addi r9,r9,1f - 0b + + mfmsr r7 + li r8,(MSR_IS | MSR_DS) + andc r7,r7,r8 + + mtspr SPRN_SRR0,r9 + mtspr SPRN_SRR1,r7 + sync + rfi + + /* Invalidate the temporary tlb entry for AS1 */ +1: lis r9,0x1000 /* Set MAS0(TLBSEL) = 1 */ + rlwimi r9,r3,16,4,15 /* Setup MAS0 = TLBSEL | ESEL(r3) */ + mtspr SPRN_MAS0,r9 + tlbre + mfspr r9,SPRN_MAS1 + rlwinm r9,r9,0,2,31 /* Clear MAS1 Valid and IPPROT */ + mtspr SPRN_MAS1,r9 + tlbwe + isync + mtlr r0 + blr + /* * We put a few things here that have to be page-aligned. This stuff * goes at the beginning of the data segment, which is page-aligned. diff --git a/arch/powerpc/mm/fsl_booke_mmu.c b/arch/powerpc/mm/fsl_booke_mmu.c index ce4a1163ddd3..1d54f6d35e71 100644 --- a/arch/powerpc/mm/fsl_booke_mmu.c +++ b/arch/powerpc/mm/fsl_booke_mmu.c @@ -222,7 +222,9 @@ void __init adjust_total_lowmem(void) /* adjust lowmem size to __max_low_memory */ ram = min((phys_addr_t)__max_low_memory, (phys_addr_t)total_lowmem); + i = switch_to_as1(); __max_low_memory = map_mem_in_cams(ram, CONFIG_LOWMEM_CAM_NUM); + restore_to_as0(i); pr_info("Memory CAM mapping: "); for (i = 0; i < tlbcam_index - 1; i++) diff --git a/arch/powerpc/mm/mmu_decl.h b/arch/powerpc/mm/mmu_decl.h index 83eb5d5f53d5..eefbf7bb4331 100644 --- a/arch/powerpc/mm/mmu_decl.h +++ b/arch/powerpc/mm/mmu_decl.h @@ -148,6 +148,8 @@ extern unsigned long calc_cam_sz(unsigned long ram, unsigned long virt, extern void MMU_init_hw(void); extern unsigned long mmu_mapin_ram(unsigned long top); extern void adjust_total_lowmem(void); +extern int switch_to_as1(void); +extern void restore_to_as0(int esel); #endif extern void loadcam_entry(unsigned int index); -- cgit v1.2.3 From b27652dd2174df1a7e0a7c5f00d1c8e3ed9287a7 Mon Sep 17 00:00:00 2001 From: Kevin Hao Date: Tue, 24 Dec 2013 15:12:08 +0800 Subject: powerpc: introduce early_get_first_memblock_info For a relocatable kernel since it can be loaded at any place, there is no any relation between the kernel start addr and the memstart_addr. So we can't calculate the memstart_addr from kernel start addr. And also we can't wait to do the relocation after we get the real memstart_addr from device tree because it is so late. So introduce a new function we can use to get the first memblock address and size in a very early stage (before machine_init). Signed-off-by: Kevin Hao Signed-off-by: Scott Wood --- arch/powerpc/kernel/prom.c | 41 ++++++++++++++++++++++++++++++++++++++++- include/linux/of_fdt.h | 1 + 2 files changed, 41 insertions(+), 1 deletion(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index fa0ad8aafbcc..f58c0d3aaeb4 100644 --- a/arch/powerpc/kernel/prom.c +++ b/arch/powerpc/kernel/prom.c @@ -523,6 +523,20 @@ static int __init early_init_dt_scan_memory_ppc(unsigned long node, return early_init_dt_scan_memory(node, uname, depth, data); } +/* + * For a relocatable kernel, we need to get the memstart_addr first, + * then use it to calculate the virtual kernel start address. This has + * to happen at a very early stage (before machine_init). In this case, + * we just want to get the memstart_address and would not like to mess the + * memblock at this stage. So introduce a variable to skip the memblock_add() + * for this reason. + */ +#ifdef CONFIG_RELOCATABLE +static int add_mem_to_memblock = 1; +#else +#define add_mem_to_memblock 1 +#endif + void __init early_init_dt_add_memory_arch(u64 base, u64 size) { #ifdef CONFIG_PPC64 @@ -543,7 +557,8 @@ void __init early_init_dt_add_memory_arch(u64 base, u64 size) } /* Add the chunk to the MEMBLOCK list */ - memblock_add(base, size); + if (add_mem_to_memblock) + memblock_add(base, size); } static void __init early_reserve_mem_dt(void) @@ -740,6 +755,30 @@ void __init early_init_devtree(void *params) DBG(" <- early_init_devtree()\n"); } +#ifdef CONFIG_RELOCATABLE +/* + * This function run before early_init_devtree, so we have to init + * initial_boot_params. + */ +void __init early_get_first_memblock_info(void *params, phys_addr_t *size) +{ + /* Setup flat device-tree pointer */ + initial_boot_params = params; + + /* + * Scan the memory nodes and set add_mem_to_memblock to 0 to avoid + * mess the memblock. + */ + add_mem_to_memblock = 0; + of_scan_flat_dt(early_init_dt_scan_root, NULL); + of_scan_flat_dt(early_init_dt_scan_memory_ppc, NULL); + add_mem_to_memblock = 1; + + if (size) + *size = first_memblock_size; +} +#endif + /******* * * New implementation of the OF "find" APIs, return a refcounted diff --git a/include/linux/of_fdt.h b/include/linux/of_fdt.h index 0beaee9dac1f..2b77058a7335 100644 --- a/include/linux/of_fdt.h +++ b/include/linux/of_fdt.h @@ -116,6 +116,7 @@ extern const void *of_flat_dt_match_machine(const void *default_match, extern void unflatten_device_tree(void); extern void unflatten_and_copy_device_tree(void); extern void early_init_devtree(void *); +extern void early_get_first_memblock_info(void *, phys_addr_t *); #else /* CONFIG_OF_FLATTREE */ static inline const char *of_flat_dt_get_machine_name(void) { return NULL; } static inline void unflatten_device_tree(void) {} -- cgit v1.2.3 From 813125d83372e19edecaba811d4d0dc115d36819 Mon Sep 17 00:00:00 2001 From: Kevin Hao Date: Tue, 24 Dec 2013 15:12:09 +0800 Subject: powerpc/fsl_booke: introduce map_mem_in_cams_addr Introduce this function so we can set both the physical and virtual address for the map in cams. This will be used by the relocation code. Signed-off-by: Kevin Hao Signed-off-by: Scott Wood --- arch/powerpc/mm/fsl_booke_mmu.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/mm/fsl_booke_mmu.c b/arch/powerpc/mm/fsl_booke_mmu.c index 1d54f6d35e71..ca956c83e3a2 100644 --- a/arch/powerpc/mm/fsl_booke_mmu.c +++ b/arch/powerpc/mm/fsl_booke_mmu.c @@ -171,11 +171,10 @@ unsigned long calc_cam_sz(unsigned long ram, unsigned long virt, return 1UL << camsize; } -unsigned long map_mem_in_cams(unsigned long ram, int max_cam_idx) +static unsigned long map_mem_in_cams_addr(phys_addr_t phys, unsigned long virt, + unsigned long ram, int max_cam_idx) { int i; - unsigned long virt = PAGE_OFFSET; - phys_addr_t phys = memstart_addr; unsigned long amount_mapped = 0; /* Calculate CAM values */ @@ -195,6 +194,14 @@ unsigned long map_mem_in_cams(unsigned long ram, int max_cam_idx) return amount_mapped; } +unsigned long map_mem_in_cams(unsigned long ram, int max_cam_idx) +{ + unsigned long virt = PAGE_OFFSET; + phys_addr_t phys = memstart_addr; + + return map_mem_in_cams_addr(phys, virt, ram, max_cam_idx); +} + #ifdef CONFIG_PPC32 #if defined(CONFIG_LOWMEM_CAM_NUM_BOOL) && (CONFIG_LOWMEM_CAM_NUM >= NUM_TLBCAMS) -- cgit v1.2.3 From 7d2471f9fa85089beb1cb9436ffc28f9e11e518d Mon Sep 17 00:00:00 2001 From: Kevin Hao Date: Tue, 24 Dec 2013 15:12:10 +0800 Subject: powerpc/fsl_booke: make sure PAGE_OFFSET map to memstart_addr for relocatable kernel This is always true for a non-relocatable kernel. Otherwise the kernel would get stuck. But for a relocatable kernel, it seems a little complicated. When booting a relocatable kernel, we just align the kernel start addr to 64M and map the PAGE_OFFSET from there. The relocation will base on this virtual address. But if this address is not the same as the memstart_addr, we will have to change the map of PAGE_OFFSET to the real memstart_addr and do another relocation again. Signed-off-by: Kevin Hao [scottwood@freescale.com: make offset long and non-negative in simple case] Signed-off-by: Scott Wood --- arch/powerpc/kernel/head_fsl_booke.S | 74 +++++++++++++++++++++++++++++++++--- arch/powerpc/mm/fsl_booke_mmu.c | 42 +++++++++++++++++--- arch/powerpc/mm/mmu_decl.h | 2 +- 3 files changed, 106 insertions(+), 12 deletions(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S index 75f0223e6d0d..b1f7edc3c360 100644 --- a/arch/powerpc/kernel/head_fsl_booke.S +++ b/arch/powerpc/kernel/head_fsl_booke.S @@ -81,6 +81,39 @@ _ENTRY(_start); mr r23,r3 mr r25,r4 + bl 0f +0: mflr r8 + addis r3,r8,(is_second_reloc - 0b)@ha + lwz r19,(is_second_reloc - 0b)@l(r3) + + /* Check if this is the second relocation. */ + cmpwi r19,1 + bne 1f + + /* + * For the second relocation, we already get the real memstart_addr + * from device tree. So we will map PAGE_OFFSET to memstart_addr, + * then the virtual address of start kernel should be: + * PAGE_OFFSET + (kernstart_addr - memstart_addr) + * Since the offset between kernstart_addr and memstart_addr should + * never be beyond 1G, so we can just use the lower 32bit of them + * for the calculation. + */ + lis r3,PAGE_OFFSET@h + + addis r4,r8,(kernstart_addr - 0b)@ha + addi r4,r4,(kernstart_addr - 0b)@l + lwz r5,4(r4) + + addis r6,r8,(memstart_addr - 0b)@ha + addi r6,r6,(memstart_addr - 0b)@l + lwz r7,4(r6) + + subf r5,r7,r5 + add r3,r3,r5 + b 2f + +1: /* * We have the runtime (virutal) address of our base. * We calculate our shift of offset from a 64M page. @@ -94,7 +127,14 @@ _ENTRY(_start); subf r3,r5,r6 /* r3 = r6 - r5 */ add r3,r4,r3 /* Required Virtual Address */ - bl relocate +2: bl relocate + + /* + * For the second relocation, we already set the right tlb entries + * for the kernel space, so skip the code in fsl_booke_entry_mapping.S + */ + cmpwi r19,1 + beq set_ivor #endif /* We try to not make any assumptions about how the boot loader @@ -122,6 +162,7 @@ _ENTRY(__early_start) #include "fsl_booke_entry_mapping.S" #undef ENTRY_MAPPING_BOOT_SETUP +set_ivor: /* Establish the interrupt vector offsets */ SET_IVOR(0, CriticalInput); SET_IVOR(1, MachineCheck); @@ -207,11 +248,13 @@ _ENTRY(__early_start) bl early_init #ifdef CONFIG_RELOCATABLE + mr r3,r30 + mr r4,r31 #ifdef CONFIG_PHYS_64BIT - mr r3,r23 - mr r4,r25 + mr r5,r23 + mr r6,r25 #else - mr r3,r25 + mr r5,r25 #endif bl relocate_init #endif @@ -1207,6 +1250,9 @@ _GLOBAL(switch_to_as1) /* * Restore to the address space 0 and also invalidate the tlb entry created * by switch_to_as1. + * r3 - the tlb entry which should be invalidated + * r4 - __pa(PAGE_OFFSET in AS1) - __pa(PAGE_OFFSET in AS0) + * r5 - device tree virtual address. If r4 is 0, r5 is ignored. */ _GLOBAL(restore_to_as0) mflr r0 @@ -1215,7 +1261,15 @@ _GLOBAL(restore_to_as0) 0: mflr r9 addi r9,r9,1f - 0b - mfmsr r7 + /* + * We may map the PAGE_OFFSET in AS0 to a different physical address, + * so we need calculate the right jump and device tree address based + * on the offset passed by r4. + */ + add r9,r9,r4 + add r5,r5,r4 + +2: mfmsr r7 li r8,(MSR_IS | MSR_DS) andc r7,r7,r8 @@ -1234,9 +1288,19 @@ _GLOBAL(restore_to_as0) mtspr SPRN_MAS1,r9 tlbwe isync + + cmpwi r4,0 + bne 3f mtlr r0 blr + /* + * The PAGE_OFFSET will map to a different physical address, + * jump to _start to do another relocation again. + */ +3: mr r3,r5 + bl _start + /* * We put a few things here that have to be page-aligned. This stuff * goes at the beginning of the data segment, which is page-aligned. diff --git a/arch/powerpc/mm/fsl_booke_mmu.c b/arch/powerpc/mm/fsl_booke_mmu.c index ca956c83e3a2..95deb9fdf92f 100644 --- a/arch/powerpc/mm/fsl_booke_mmu.c +++ b/arch/powerpc/mm/fsl_booke_mmu.c @@ -231,7 +231,7 @@ void __init adjust_total_lowmem(void) i = switch_to_as1(); __max_low_memory = map_mem_in_cams(ram, CONFIG_LOWMEM_CAM_NUM); - restore_to_as0(i); + restore_to_as0(i, 0, 0); pr_info("Memory CAM mapping: "); for (i = 0; i < tlbcam_index - 1; i++) @@ -252,17 +252,25 @@ void setup_initial_memory_limit(phys_addr_t first_memblock_base, } #ifdef CONFIG_RELOCATABLE -notrace void __init relocate_init(phys_addr_t start) +int __initdata is_second_reloc; +notrace void __init relocate_init(u64 dt_ptr, phys_addr_t start) { unsigned long base = KERNELBASE; + kernstart_addr = start; + if (is_second_reloc) { + virt_phys_offset = PAGE_OFFSET - memstart_addr; + return; + } + /* * Relocatable kernel support based on processing of dynamic - * relocation entries. - * Compute the virt_phys_offset : + * relocation entries. Before we get the real memstart_addr, + * We will compute the virt_phys_offset like this: * virt_phys_offset = stext.run - kernstart_addr * - * stext.run = (KERNELBASE & ~0x3ffffff) + (kernstart_addr & 0x3ffffff) + * stext.run = (KERNELBASE & ~0x3ffffff) + + * (kernstart_addr & 0x3ffffff) * When we relocate, we have : * * (kernstart_addr & 0x3ffffff) = (stext.run & 0x3ffffff) @@ -272,10 +280,32 @@ notrace void __init relocate_init(phys_addr_t start) * (kernstart_addr & ~0x3ffffff) * */ - kernstart_addr = start; start &= ~0x3ffffff; base &= ~0x3ffffff; virt_phys_offset = base - start; + early_get_first_memblock_info(__va(dt_ptr), NULL); + /* + * We now get the memstart_addr, then we should check if this + * address is the same as what the PAGE_OFFSET map to now. If + * not we have to change the map of PAGE_OFFSET to memstart_addr + * and do a second relocation. + */ + if (start != memstart_addr) { + int n; + long offset = start - memstart_addr; + + is_second_reloc = 1; + n = switch_to_as1(); + /* map a 64M area for the second relocation */ + if (memstart_addr > start) + map_mem_in_cams(0x4000000, CONFIG_LOWMEM_CAM_NUM); + else + map_mem_in_cams_addr(start, PAGE_OFFSET + offset, + 0x4000000, CONFIG_LOWMEM_CAM_NUM); + restore_to_as0(n, offset, __va(dt_ptr)); + /* We should never reach here */ + panic("Relocation error"); + } } #endif #endif diff --git a/arch/powerpc/mm/mmu_decl.h b/arch/powerpc/mm/mmu_decl.h index eefbf7bb4331..91da910210cb 100644 --- a/arch/powerpc/mm/mmu_decl.h +++ b/arch/powerpc/mm/mmu_decl.h @@ -149,7 +149,7 @@ extern void MMU_init_hw(void); extern unsigned long mmu_mapin_ram(unsigned long top); extern void adjust_total_lowmem(void); extern int switch_to_as1(void); -extern void restore_to_as0(int esel); +extern void restore_to_as0(int esel, int offset, void *dt_ptr); #endif extern void loadcam_entry(unsigned int index); -- cgit v1.2.3 From 0be7d969b0efef085ed6497d462ba16a875ca737 Mon Sep 17 00:00:00 2001 From: Kevin Hao Date: Tue, 24 Dec 2013 15:12:11 +0800 Subject: powerpc/fsl_booke: smp support for booting a relocatable kernel above 64M When booting above the 64M for a secondary cpu, we also face the same issue as the boot cpu that the PAGE_OFFSET map two different physical address for the init tlb and the final map. So we have to use switch_to_as1/restore_to_as0 between the conversion of these two maps. When restoring to as0 for a secondary cpu, we only need to return to the caller. So add a new parameter for function restore_to_as0 for this purpose. Use LOAD_REG_ADDR_PIC to get the address of variables which may be used before we set the final map in cams for the secondary cpu. Move the setting of cams a bit earlier in order to avoid the unnecessary using of LOAD_REG_ADDR_PIC. Signed-off-by: Kevin Hao Signed-off-by: Scott Wood --- arch/powerpc/kernel/head_fsl_booke.S | 41 ++++++++++++++++++++++++------------ arch/powerpc/mm/fsl_booke_mmu.c | 4 ++-- arch/powerpc/mm/mmu_decl.h | 2 +- arch/powerpc/mm/tlb_nohash_low.S | 4 +++- 4 files changed, 34 insertions(+), 17 deletions(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S index b1f7edc3c360..b497188a94a1 100644 --- a/arch/powerpc/kernel/head_fsl_booke.S +++ b/arch/powerpc/kernel/head_fsl_booke.S @@ -216,8 +216,7 @@ set_ivor: /* Check to see if we're the second processor, and jump * to the secondary_start code if so */ - lis r24, boot_cpuid@h - ori r24, r24, boot_cpuid@l + LOAD_REG_ADDR_PIC(r24, boot_cpuid) lwz r24, 0(r24) cmpwi r24, -1 mfspr r24,SPRN_PIR @@ -1146,24 +1145,36 @@ _GLOBAL(__flush_disable_L1) /* When we get here, r24 needs to hold the CPU # */ .globl __secondary_start __secondary_start: - lis r3,__secondary_hold_acknowledge@h - ori r3,r3,__secondary_hold_acknowledge@l - stw r24,0(r3) - - li r3,0 - mr r4,r24 /* Why? */ - bl call_setup_cpu - - lis r3,tlbcam_index@ha - lwz r3,tlbcam_index@l(r3) + LOAD_REG_ADDR_PIC(r3, tlbcam_index) + lwz r3,0(r3) mtctr r3 li r26,0 /* r26 safe? */ + bl switch_to_as1 + mr r27,r3 /* tlb entry */ /* Load each CAM entry */ 1: mr r3,r26 bl loadcam_entry addi r26,r26,1 bdnz 1b + mr r3,r27 /* tlb entry */ + LOAD_REG_ADDR_PIC(r4, memstart_addr) + lwz r4,0(r4) + mr r5,r25 /* phys kernel start */ + rlwinm r5,r5,0,~0x3ffffff /* aligned 64M */ + subf r4,r5,r4 /* memstart_addr - phys kernel start */ + li r5,0 /* no device tree */ + li r6,0 /* not boot cpu */ + bl restore_to_as0 + + + lis r3,__secondary_hold_acknowledge@h + ori r3,r3,__secondary_hold_acknowledge@l + stw r24,0(r3) + + li r3,0 + mr r4,r24 /* Why? */ + bl call_setup_cpu /* get current_thread_info and current */ lis r1,secondary_ti@ha @@ -1253,6 +1264,7 @@ _GLOBAL(switch_to_as1) * r3 - the tlb entry which should be invalidated * r4 - __pa(PAGE_OFFSET in AS1) - __pa(PAGE_OFFSET in AS0) * r5 - device tree virtual address. If r4 is 0, r5 is ignored. + * r6 - boot cpu */ _GLOBAL(restore_to_as0) mflr r0 @@ -1268,6 +1280,7 @@ _GLOBAL(restore_to_as0) */ add r9,r9,r4 add r5,r5,r4 + add r0,r0,r4 2: mfmsr r7 li r8,(MSR_IS | MSR_DS) @@ -1290,7 +1303,9 @@ _GLOBAL(restore_to_as0) isync cmpwi r4,0 - bne 3f + cmpwi cr1,r6,0 + cror eq,4*cr1+eq,eq + bne 3f /* offset != 0 && is_boot_cpu */ mtlr r0 blr diff --git a/arch/powerpc/mm/fsl_booke_mmu.c b/arch/powerpc/mm/fsl_booke_mmu.c index 95deb9fdf92f..a68671c18ad4 100644 --- a/arch/powerpc/mm/fsl_booke_mmu.c +++ b/arch/powerpc/mm/fsl_booke_mmu.c @@ -231,7 +231,7 @@ void __init adjust_total_lowmem(void) i = switch_to_as1(); __max_low_memory = map_mem_in_cams(ram, CONFIG_LOWMEM_CAM_NUM); - restore_to_as0(i, 0, 0); + restore_to_as0(i, 0, 0, 1); pr_info("Memory CAM mapping: "); for (i = 0; i < tlbcam_index - 1; i++) @@ -302,7 +302,7 @@ notrace void __init relocate_init(u64 dt_ptr, phys_addr_t start) else map_mem_in_cams_addr(start, PAGE_OFFSET + offset, 0x4000000, CONFIG_LOWMEM_CAM_NUM); - restore_to_as0(n, offset, __va(dt_ptr)); + restore_to_as0(n, offset, __va(dt_ptr), 1); /* We should never reach here */ panic("Relocation error"); } diff --git a/arch/powerpc/mm/mmu_decl.h b/arch/powerpc/mm/mmu_decl.h index 91da910210cb..9615d82919b8 100644 --- a/arch/powerpc/mm/mmu_decl.h +++ b/arch/powerpc/mm/mmu_decl.h @@ -149,7 +149,7 @@ extern void MMU_init_hw(void); extern unsigned long mmu_mapin_ram(unsigned long top); extern void adjust_total_lowmem(void); extern int switch_to_as1(void); -extern void restore_to_as0(int esel, int offset, void *dt_ptr); +extern void restore_to_as0(int esel, int offset, void *dt_ptr, int bootcpu); #endif extern void loadcam_entry(unsigned int index); diff --git a/arch/powerpc/mm/tlb_nohash_low.S b/arch/powerpc/mm/tlb_nohash_low.S index 626ad081639f..43ff3c797fbf 100644 --- a/arch/powerpc/mm/tlb_nohash_low.S +++ b/arch/powerpc/mm/tlb_nohash_low.S @@ -402,7 +402,9 @@ _GLOBAL(set_context) * Load TLBCAM[index] entry in to the L2 CAM MMU */ _GLOBAL(loadcam_entry) - LOAD_REG_ADDR(r4, TLBCAM) + mflr r5 + LOAD_REG_ADDR_PIC(r4, TLBCAM) + mtlr r5 mulli r5,r3,TLBCAM_SIZE add r3,r5,r4 lwz r4,TLBCAM_MAS0(r3) -- cgit v1.2.3 From dde7dd3d67728418bc61cee424fcd9041058cf3f Mon Sep 17 00:00:00 2001 From: Kevin Hao Date: Tue, 24 Dec 2013 15:12:12 +0800 Subject: powerpc/fsl_booke: enable the relocatable for the kdump kernel The RELOCATABLE is more flexible and without any alignment restriction. And it is a superset of DYNAMIC_MEMSTART. So use it by default for a kdump kernel. Signed-off-by: Kevin Hao Signed-off-by: Scott Wood --- arch/powerpc/Kconfig | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 4bb52e6488ea..fa395179ddd6 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -402,8 +402,7 @@ config KEXEC config CRASH_DUMP bool "Build a kdump crash kernel" depends on PPC64 || 6xx || FSL_BOOKE || (44x && !SMP) - select RELOCATABLE if PPC64 || 44x - select DYNAMIC_MEMSTART if FSL_BOOKE + select RELOCATABLE if PPC64 || 44x || FSL_BOOKE help Build a kernel suitable for use as a kdump capture kernel. The same kernel binary can be used as production kernel and dump -- cgit v1.2.3 From 47ce8af4209f4344f152aa6fc538efe9d6bdfd1a Mon Sep 17 00:00:00 2001 From: Scott Wood Date: Fri, 11 Oct 2013 19:22:37 -0500 Subject: powerpc: add barrier after writing kernel PTE There is no barrier between something like ioremap() writing to a PTE, and returning the value to a caller that may then store the pointer in a place that is visible to other CPUs. Such callers generally don't perform barriers of their own. Even if callers of ioremap() and similar things did use barriers, the most logical choise would be smp_wmb(), which is not architecturally sufficient when BookE hardware tablewalk is used. A full sync is specified by the architecture. For userspace mappings, OTOH, we generally already have an lwsync due to locking, and if we occasionally take a spurious fault due to not having a full sync with hardware tablewalk, it will not be fatal because we will retry rather than oops. Signed-off-by: Scott Wood --- arch/powerpc/mm/pgtable_32.c | 1 + arch/powerpc/mm/pgtable_64.c | 12 ++++++++++++ 2 files changed, 13 insertions(+) (limited to 'arch/powerpc') diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c index 5b9601715289..343a87fa78b5 100644 --- a/arch/powerpc/mm/pgtable_32.c +++ b/arch/powerpc/mm/pgtable_32.c @@ -299,6 +299,7 @@ int map_page(unsigned long va, phys_addr_t pa, int flags) set_pte_at(&init_mm, va, pg, pfn_pte(pa >> PAGE_SHIFT, __pgprot(flags))); } + smp_wmb(); return err; } diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c index 02e8681fb865..755138218e04 100644 --- a/arch/powerpc/mm/pgtable_64.c +++ b/arch/powerpc/mm/pgtable_64.c @@ -153,6 +153,18 @@ int map_kernel_page(unsigned long ea, unsigned long pa, int flags) } #endif /* !CONFIG_PPC_MMU_NOHASH */ } + +#ifdef CONFIG_PPC_BOOK3E_64 + /* + * With hardware tablewalk, a sync is needed to ensure that + * subsequent accesses see the PTE we just wrote. Unlike userspace + * mappings, we can't tolerate spurious faults, so make sure + * the new PTE will be seen the first time. + */ + mb(); +#else + smp_wmb(); +#endif return 0; } -- cgit v1.2.3 From 28efc35fe68dacbddc4b12c2fa8f2df1593a4ad3 Mon Sep 17 00:00:00 2001 From: Scott Wood Date: Fri, 11 Oct 2013 19:22:38 -0500 Subject: powerpc/e6500: TLB miss handler with hardware tablewalk support There are a few things that make the existing hw tablewalk handlers unsuitable for e6500: - Indirect entries go in TLB1 (though the resulting direct entries go in TLB0). - It has threads, but no "tlbsrx." -- so we need a spinlock and a normal "tlbsx". Because we need this lock, hardware tablewalk is mandatory on e6500 unless we want to add spinlock+tlbsx to the normal bolted TLB miss handler. - TLB1 has no HES (nor next-victim hint) so we need software round robin (TODO: integrate this round robin data with hugetlb/KVM) - The existing tablewalk handlers map half of a page table at a time, because IBM hardware has a fixed 1MiB indirect page size. e6500 has variable size indirect entries, with a minimum of 2MiB. So we can't do the half-page indirect mapping, and even if we could it would be less efficient than mapping the full page. - Like on e5500, the linear mapping is bolted, so we don't need the overhead of supporting nested tlb misses. Note that hardware tablewalk does not work in rev1 of e6500. We do not expect to support e6500 rev1 in mainline Linux. Signed-off-by: Scott Wood Cc: Mihai Caraman --- arch/powerpc/include/asm/mmu-book3e.h | 13 +++ arch/powerpc/include/asm/mmu.h | 21 +++-- arch/powerpc/include/asm/paca.h | 6 ++ arch/powerpc/kernel/asm-offsets.c | 9 ++ arch/powerpc/kernel/paca.c | 5 + arch/powerpc/kernel/setup_64.c | 31 ++++++ arch/powerpc/mm/fsl_booke_mmu.c | 7 ++ arch/powerpc/mm/mem.c | 6 ++ arch/powerpc/mm/tlb_low_64e.S | 171 ++++++++++++++++++++++++++++++++++ arch/powerpc/mm/tlb_nohash.c | 93 ++++++++++++------ 10 files changed, 326 insertions(+), 36 deletions(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/include/asm/mmu-book3e.h b/arch/powerpc/include/asm/mmu-book3e.h index 936db360790a..89b785d16846 100644 --- a/arch/powerpc/include/asm/mmu-book3e.h +++ b/arch/powerpc/include/asm/mmu-book3e.h @@ -286,8 +286,21 @@ static inline unsigned int mmu_psize_to_shift(unsigned int mmu_psize) extern int mmu_linear_psize; extern int mmu_vmemmap_psize; +struct tlb_core_data { + /* For software way selection, as on Freescale TLB1 */ + u8 esel_next, esel_max, esel_first; + + /* Per-core spinlock for e6500 TLB handlers (no tlbsrx.) */ + u8 lock; +}; + #ifdef CONFIG_PPC64 extern unsigned long linear_map_top; +extern int book3e_htw_mode; + +#define PPC_HTW_NONE 0 +#define PPC_HTW_IBM 1 +#define PPC_HTW_E6500 2 /* * 64-bit booke platforms don't load the tlb in the tlb miss handler code. diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h index 691fd8aca939..f8d1d6dcf7db 100644 --- a/arch/powerpc/include/asm/mmu.h +++ b/arch/powerpc/include/asm/mmu.h @@ -180,16 +180,17 @@ static inline void assert_pte_locked(struct mm_struct *mm, unsigned long addr) #define MMU_PAGE_64K_AP 3 /* "Admixed pages" (hash64 only) */ #define MMU_PAGE_256K 4 #define MMU_PAGE_1M 5 -#define MMU_PAGE_4M 6 -#define MMU_PAGE_8M 7 -#define MMU_PAGE_16M 8 -#define MMU_PAGE_64M 9 -#define MMU_PAGE_256M 10 -#define MMU_PAGE_1G 11 -#define MMU_PAGE_16G 12 -#define MMU_PAGE_64G 13 - -#define MMU_PAGE_COUNT 14 +#define MMU_PAGE_2M 6 +#define MMU_PAGE_4M 7 +#define MMU_PAGE_8M 8 +#define MMU_PAGE_16M 9 +#define MMU_PAGE_64M 10 +#define MMU_PAGE_256M 11 +#define MMU_PAGE_1G 12 +#define MMU_PAGE_16G 13 +#define MMU_PAGE_64G 14 + +#define MMU_PAGE_COUNT 15 #if defined(CONFIG_PPC_STD_MMU_64) /* 64-bit classic hash table MMU */ diff --git a/arch/powerpc/include/asm/paca.h b/arch/powerpc/include/asm/paca.h index c3523d1dda58..e81731c62a7f 100644 --- a/arch/powerpc/include/asm/paca.h +++ b/arch/powerpc/include/asm/paca.h @@ -113,6 +113,10 @@ struct paca_struct { /* Keep pgd in the same cacheline as the start of extlb */ pgd_t *pgd __attribute__((aligned(0x80))); /* Current PGD */ pgd_t *kernel_pgd; /* Kernel PGD */ + + /* Shared by all threads of a core -- points to tcd of first thread */ + struct tlb_core_data *tcd_ptr; + /* We can have up to 3 levels of reentrancy in the TLB miss handler */ u64 extlb[3][EX_TLB_SIZE / sizeof(u64)]; u64 exmc[8]; /* used for machine checks */ @@ -123,6 +127,8 @@ struct paca_struct { void *mc_kstack; void *crit_kstack; void *dbg_kstack; + + struct tlb_core_data tcd; #endif /* CONFIG_PPC_BOOK3E */ mm_context_t context; diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c index 41a283956a29..ed8d68ce71f3 100644 --- a/arch/powerpc/kernel/asm-offsets.c +++ b/arch/powerpc/kernel/asm-offsets.c @@ -203,6 +203,15 @@ int main(void) DEFINE(PACA_MC_STACK, offsetof(struct paca_struct, mc_kstack)); DEFINE(PACA_CRIT_STACK, offsetof(struct paca_struct, crit_kstack)); DEFINE(PACA_DBG_STACK, offsetof(struct paca_struct, dbg_kstack)); + DEFINE(PACA_TCD_PTR, offsetof(struct paca_struct, tcd_ptr)); + + DEFINE(TCD_ESEL_NEXT, + offsetof(struct tlb_core_data, esel_next)); + DEFINE(TCD_ESEL_MAX, + offsetof(struct tlb_core_data, esel_max)); + DEFINE(TCD_ESEL_FIRST, + offsetof(struct tlb_core_data, esel_first)); + DEFINE(TCD_LOCK, offsetof(struct tlb_core_data, lock)); #endif /* CONFIG_PPC_BOOK3E */ #ifdef CONFIG_PPC_STD_MMU_64 diff --git a/arch/powerpc/kernel/paca.c b/arch/powerpc/kernel/paca.c index 623c356fe34f..bf0aada02fe4 100644 --- a/arch/powerpc/kernel/paca.c +++ b/arch/powerpc/kernel/paca.c @@ -160,6 +160,11 @@ void __init initialise_paca(struct paca_struct *new_paca, int cpu) #ifdef CONFIG_PPC_STD_MMU_64 new_paca->slb_shadow_ptr = init_slb_shadow(cpu); #endif /* CONFIG_PPC_STD_MMU_64 */ + +#ifdef CONFIG_PPC_BOOK3E + /* For now -- if we have threads this will be adjusted later */ + new_paca->tcd_ptr = &new_paca->tcd; +#endif } /* Put the paca pointer into r13 and SPRG_PACA */ diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c index 2232aff66059..1ce9b87d7df8 100644 --- a/arch/powerpc/kernel/setup_64.c +++ b/arch/powerpc/kernel/setup_64.c @@ -97,6 +97,36 @@ int dcache_bsize; int icache_bsize; int ucache_bsize; +#if defined(CONFIG_PPC_BOOK3E) && defined(CONFIG_SMP) +static void setup_tlb_core_data(void) +{ + int cpu; + + for_each_possible_cpu(cpu) { + int first = cpu_first_thread_sibling(cpu); + + paca[cpu].tcd_ptr = &paca[first].tcd; + + /* + * If we have threads, we need either tlbsrx. + * or e6500 tablewalk mode, or else TLB handlers + * will be racy and could produce duplicate entries. + */ + if (smt_enabled_at_boot >= 2 && + !mmu_has_feature(MMU_FTR_USE_TLBRSRV) && + book3e_htw_mode != PPC_HTW_E6500) { + /* Should we panic instead? */ + WARN_ONCE("%s: unsupported MMU configuration -- expect problems\n", + __func__); + } + } +} +#else +static void setup_tlb_core_data(void) +{ +} +#endif + #ifdef CONFIG_SMP static char *smt_enabled_cmdline; @@ -445,6 +475,7 @@ void __init setup_system(void) smp_setup_cpu_maps(); check_smt_enabled(); + setup_tlb_core_data(); #ifdef CONFIG_SMP /* Release secondary cpus out of their spinloops at 0x60 now that diff --git a/arch/powerpc/mm/fsl_booke_mmu.c b/arch/powerpc/mm/fsl_booke_mmu.c index a68671c18ad4..94cd728166d3 100644 --- a/arch/powerpc/mm/fsl_booke_mmu.c +++ b/arch/powerpc/mm/fsl_booke_mmu.c @@ -52,6 +52,7 @@ #include #include #include +#include #include "mmu_decl.h" @@ -191,6 +192,12 @@ static unsigned long map_mem_in_cams_addr(phys_addr_t phys, unsigned long virt, } tlbcam_index = i; +#ifdef CONFIG_PPC64 + get_paca()->tcd.esel_next = i; + get_paca()->tcd.esel_max = mfspr(SPRN_TLB1CFG) & TLBnCFG_N_ENTRY; + get_paca()->tcd.esel_first = i; +#endif + return amount_mapped; } diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index 3fa93dc7fe75..94448cd4b444 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -307,6 +307,12 @@ static void __init register_page_bootmem_info(void) void __init mem_init(void) { + /* + * book3s is limited to 16 page sizes due to encoding this in + * a 4-bit field for slices. + */ + BUILD_BUG_ON(MMU_PAGE_COUNT > 16); + #ifdef CONFIG_SWIOTLB swiotlb_init(0); #endif diff --git a/arch/powerpc/mm/tlb_low_64e.S b/arch/powerpc/mm/tlb_low_64e.S index b4113bf86353..75f5d2777f61 100644 --- a/arch/powerpc/mm/tlb_low_64e.S +++ b/arch/powerpc/mm/tlb_low_64e.S @@ -239,6 +239,177 @@ itlb_miss_fault_bolted: beq tlb_miss_common_bolted b itlb_miss_kernel_bolted +/* + * TLB miss handling for e6500 and derivatives, using hardware tablewalk. + * + * Linear mapping is bolted: no virtual page table or nested TLB misses + * Indirect entries in TLB1, hardware loads resulting direct entries + * into TLB0 + * No HES or NV hint on TLB1, so we need to do software round-robin + * No tlbsrx. so we need a spinlock, and we have to deal + * with MAS-damage caused by tlbsx + * 4K pages only + */ + + START_EXCEPTION(instruction_tlb_miss_e6500) + tlb_prolog_bolted BOOKE_INTERRUPT_ITLB_MISS SPRN_SRR0 + + ld r11,PACA_TCD_PTR(r13) + srdi. r15,r16,60 /* get region */ + ori r16,r16,1 + + TLB_MISS_STATS_SAVE_INFO_BOLTED + bne tlb_miss_kernel_e6500 /* user/kernel test */ + + b tlb_miss_common_e6500 + + START_EXCEPTION(data_tlb_miss_e6500) + tlb_prolog_bolted BOOKE_INTERRUPT_DTLB_MISS SPRN_DEAR + + ld r11,PACA_TCD_PTR(r13) + srdi. r15,r16,60 /* get region */ + rldicr r16,r16,0,62 + + TLB_MISS_STATS_SAVE_INFO_BOLTED + bne tlb_miss_kernel_e6500 /* user vs kernel check */ + +/* + * This is the guts of the TLB miss handler for e6500 and derivatives. + * We are entered with: + * + * r16 = page of faulting address (low bit 0 if data, 1 if instruction) + * r15 = crap (free to use) + * r14 = page table base + * r13 = PACA + * r11 = tlb_per_core ptr + * r10 = crap (free to use) + */ +tlb_miss_common_e6500: + /* + * Search if we already have an indirect entry for that virtual + * address, and if we do, bail out. + * + * MAS6:IND should be already set based on MAS4 + */ + addi r10,r11,TCD_LOCK +1: lbarx r15,0,r10 + cmpdi r15,0 + bne 2f + li r15,1 + stbcx. r15,0,r10 + bne 1b + .subsection 1 +2: lbz r15,0(r10) + cmpdi r15,0 + bne 2b + b 1b + .previous + + mfspr r15,SPRN_MAS2 + + tlbsx 0,r16 + mfspr r10,SPRN_MAS1 + andis. r10,r10,MAS1_VALID@h + bne tlb_miss_done_e6500 + + /* Undo MAS-damage from the tlbsx */ + mfspr r10,SPRN_MAS1 + oris r10,r10,MAS1_VALID@h + mtspr SPRN_MAS1,r10 + mtspr SPRN_MAS2,r15 + + /* Now, we need to walk the page tables. First check if we are in + * range. + */ + rldicl. r10,r16,64-PGTABLE_EADDR_SIZE,PGTABLE_EADDR_SIZE+4 + bne- tlb_miss_fault_e6500 + + rldicl r15,r16,64-PGDIR_SHIFT+3,64-PGD_INDEX_SIZE-3 + cmpldi cr0,r14,0 + clrrdi r15,r15,3 + beq- tlb_miss_fault_e6500 /* No PGDIR, bail */ + ldx r14,r14,r15 /* grab pgd entry */ + + rldicl r15,r16,64-PUD_SHIFT+3,64-PUD_INDEX_SIZE-3 + clrrdi r15,r15,3 + cmpdi cr0,r14,0 + bge tlb_miss_fault_e6500 /* Bad pgd entry or hugepage; bail */ + ldx r14,r14,r15 /* grab pud entry */ + + rldicl r15,r16,64-PMD_SHIFT+3,64-PMD_INDEX_SIZE-3 + clrrdi r15,r15,3 + cmpdi cr0,r14,0 + bge tlb_miss_fault_e6500 + ldx r14,r14,r15 /* Grab pmd entry */ + + mfspr r10,SPRN_MAS0 + cmpdi cr0,r14,0 + bge tlb_miss_fault_e6500 + + /* Now we build the MAS for a 2M indirect page: + * + * MAS 0 : ESEL needs to be filled by software round-robin + * MAS 1 : Fully set up + * - PID already updated by caller if necessary + * - TSIZE for now is base ind page size always + * - TID already cleared if necessary + * MAS 2 : Default not 2M-aligned, need to be redone + * MAS 3+7 : Needs to be done + */ + + ori r14,r14,(BOOK3E_PAGESZ_4K << MAS3_SPSIZE_SHIFT) + mtspr SPRN_MAS7_MAS3,r14 + + clrrdi r15,r16,21 /* make EA 2M-aligned */ + mtspr SPRN_MAS2,r15 + + lbz r15,TCD_ESEL_NEXT(r11) + lbz r16,TCD_ESEL_MAX(r11) + lbz r14,TCD_ESEL_FIRST(r11) + rlwimi r10,r15,16,0x00ff0000 /* insert esel_next into MAS0 */ + addi r15,r15,1 /* increment esel_next */ + mtspr SPRN_MAS0,r10 + cmpw r15,r16 + iseleq r15,r14,r15 /* if next == last use first */ + stb r15,TCD_ESEL_NEXT(r11) + + tlbwe + +tlb_miss_done_e6500: + .macro tlb_unlock_e6500 + li r15,0 + isync + stb r15,TCD_LOCK(r11) + .endm + + tlb_unlock_e6500 + TLB_MISS_STATS_X(MMSTAT_TLB_MISS_NORM_OK) + tlb_epilog_bolted + rfi + +tlb_miss_kernel_e6500: + mfspr r10,SPRN_MAS1 + ld r14,PACA_KERNELPGD(r13) + cmpldi cr0,r15,8 /* Check for vmalloc region */ + rlwinm r10,r10,0,16,1 /* Clear TID */ + mtspr SPRN_MAS1,r10 + beq+ tlb_miss_common_e6500 + +tlb_miss_fault_e6500: + tlb_unlock_e6500 + /* We need to check if it was an instruction miss */ + andi. r16,r16,1 + bne itlb_miss_fault_e6500 +dtlb_miss_fault_e6500: + TLB_MISS_STATS_D(MMSTAT_TLB_MISS_NORM_FAULT) + tlb_epilog_bolted + b exc_data_storage_book3e +itlb_miss_fault_e6500: + TLB_MISS_STATS_I(MMSTAT_TLB_MISS_NORM_FAULT) + tlb_epilog_bolted + b exc_instruction_storage_book3e + + /********************************************************************** * * * TLB miss handling for Book3E with TLB reservation and HES support * diff --git a/arch/powerpc/mm/tlb_nohash.c b/arch/powerpc/mm/tlb_nohash.c index 8805b7b87dc6..735839b74dc5 100644 --- a/arch/powerpc/mm/tlb_nohash.c +++ b/arch/powerpc/mm/tlb_nohash.c @@ -43,6 +43,7 @@ #include #include #include +#include #include "mmu_decl.h" @@ -58,6 +59,10 @@ struct mmu_psize_def mmu_psize_defs[MMU_PAGE_COUNT] = { .shift = 12, .enc = BOOK3E_PAGESZ_4K, }, + [MMU_PAGE_2M] = { + .shift = 21, + .enc = BOOK3E_PAGESZ_2M, + }, [MMU_PAGE_4M] = { .shift = 22, .enc = BOOK3E_PAGESZ_4M, @@ -136,7 +141,7 @@ static inline int mmu_get_tsize(int psize) int mmu_linear_psize; /* Page size used for the linear mapping */ int mmu_pte_psize; /* Page size used for PTE pages */ int mmu_vmemmap_psize; /* Page size used for the virtual mem map */ -int book3e_htw_enabled; /* Is HW tablewalk enabled ? */ +int book3e_htw_mode; /* HW tablewalk? Value is PPC_HTW_* */ unsigned long linear_map_top; /* Top of linear mapping */ #endif /* CONFIG_PPC64 */ @@ -377,7 +382,7 @@ void tlb_flush_pgtable(struct mmu_gather *tlb, unsigned long address) { int tsize = mmu_psize_defs[mmu_pte_psize].enc; - if (book3e_htw_enabled) { + if (book3e_htw_mode != PPC_HTW_NONE) { unsigned long start = address & PMD_MASK; unsigned long end = address + PMD_SIZE; unsigned long size = 1UL << mmu_psize_defs[mmu_pte_psize].shift; @@ -430,7 +435,7 @@ static void setup_page_sizes(void) def = &mmu_psize_defs[psize]; shift = def->shift; - if (shift == 0) + if (shift == 0 || shift & 1) continue; /* adjust to be in terms of 4^shift Kb */ @@ -440,21 +445,40 @@ static void setup_page_sizes(void) def->flags |= MMU_PAGE_SIZE_DIRECT; } - goto no_indirect; + goto out; } if (fsl_mmu && (mmucfg & MMUCFG_MAVN) == MMUCFG_MAVN_V2) { - u32 tlb1ps = mfspr(SPRN_TLB1PS); + u32 tlb1cfg, tlb1ps; + + tlb0cfg = mfspr(SPRN_TLB0CFG); + tlb1cfg = mfspr(SPRN_TLB1CFG); + tlb1ps = mfspr(SPRN_TLB1PS); + eptcfg = mfspr(SPRN_EPTCFG); + + if ((tlb1cfg & TLBnCFG_IND) && (tlb0cfg & TLBnCFG_PT)) + book3e_htw_mode = PPC_HTW_E6500; + + /* + * We expect 4K subpage size and unrestricted indirect size. + * The lack of a restriction on indirect size is a Freescale + * extension, indicated by PSn = 0 but SPSn != 0. + */ + if (eptcfg != 2) + book3e_htw_mode = PPC_HTW_NONE; for (psize = 0; psize < MMU_PAGE_COUNT; ++psize) { struct mmu_psize_def *def = &mmu_psize_defs[psize]; if (tlb1ps & (1U << (def->shift - 10))) { def->flags |= MMU_PAGE_SIZE_DIRECT; + + if (book3e_htw_mode && psize == MMU_PAGE_2M) + def->flags |= MMU_PAGE_SIZE_INDIRECT; } } - goto no_indirect; + goto out; } #endif @@ -471,8 +495,11 @@ static void setup_page_sizes(void) } /* Indirect page sizes supported ? */ - if ((tlb0cfg & TLBnCFG_IND) == 0) - goto no_indirect; + if ((tlb0cfg & TLBnCFG_IND) == 0 || + (tlb0cfg & TLBnCFG_PT) == 0) + goto out; + + book3e_htw_mode = PPC_HTW_IBM; /* Now, we only deal with one IND page size for each * direct size. Hopefully all implementations today are @@ -497,8 +524,8 @@ static void setup_page_sizes(void) def->ind = ps + 10; } } - no_indirect: +out: /* Cleanup array and print summary */ pr_info("MMU: Supported page sizes\n"); for (psize = 0; psize < MMU_PAGE_COUNT; ++psize) { @@ -520,23 +547,23 @@ static void setup_page_sizes(void) static void setup_mmu_htw(void) { - /* Check if HW tablewalk is present, and if yes, enable it by: - * - * - patching the TLB miss handlers to branch to the - * one dedicates to it - * - * - setting the global book3e_htw_enabled - */ - unsigned int tlb0cfg = mfspr(SPRN_TLB0CFG); + /* + * If we want to use HW tablewalk, enable it by patching the TLB miss + * handlers to branch to the one dedicated to it. + */ - if ((tlb0cfg & TLBnCFG_IND) && - (tlb0cfg & TLBnCFG_PT)) { + switch (book3e_htw_mode) { + case PPC_HTW_IBM: patch_exception(0x1c0, exc_data_tlb_miss_htw_book3e); patch_exception(0x1e0, exc_instruction_tlb_miss_htw_book3e); - book3e_htw_enabled = 1; + break; + case PPC_HTW_E6500: + patch_exception(0x1c0, exc_data_tlb_miss_e6500_book3e); + patch_exception(0x1e0, exc_instruction_tlb_miss_e6500_book3e); + break; } pr_info("MMU: Book3E HW tablewalk %s\n", - book3e_htw_enabled ? "enabled" : "not supported"); + book3e_htw_mode != PPC_HTW_NONE ? "enabled" : "not supported"); } /* @@ -576,8 +603,16 @@ static void __early_init_mmu(int boot_cpu) /* Set MAS4 based on page table setting */ mas4 = 0x4 << MAS4_WIMGED_SHIFT; - if (book3e_htw_enabled) { - mas4 |= mas4 | MAS4_INDD; + switch (book3e_htw_mode) { + case PPC_HTW_E6500: + mas4 |= MAS4_INDD; + mas4 |= BOOK3E_PAGESZ_2M << MAS4_TSIZED_SHIFT; + mas4 |= MAS4_TLBSELD(1); + mmu_pte_psize = MMU_PAGE_2M; + break; + + case PPC_HTW_IBM: + mas4 |= MAS4_INDD; #ifdef CONFIG_PPC_64K_PAGES mas4 |= BOOK3E_PAGESZ_256M << MAS4_TSIZED_SHIFT; mmu_pte_psize = MMU_PAGE_256M; @@ -585,13 +620,16 @@ static void __early_init_mmu(int boot_cpu) mas4 |= BOOK3E_PAGESZ_1M << MAS4_TSIZED_SHIFT; mmu_pte_psize = MMU_PAGE_1M; #endif - } else { + break; + + case PPC_HTW_NONE: #ifdef CONFIG_PPC_64K_PAGES mas4 |= BOOK3E_PAGESZ_64K << MAS4_TSIZED_SHIFT; #else mas4 |= BOOK3E_PAGESZ_4K << MAS4_TSIZED_SHIFT; #endif mmu_pte_psize = mmu_virtual_psize; + break; } mtspr(SPRN_MAS4, mas4); @@ -611,8 +649,11 @@ static void __early_init_mmu(int boot_cpu) /* limit memory so we dont have linear faults */ memblock_enforce_memory_limit(linear_map_top); - patch_exception(0x1c0, exc_data_tlb_miss_bolted_book3e); - patch_exception(0x1e0, exc_instruction_tlb_miss_bolted_book3e); + if (book3e_htw_mode == PPC_HTW_NONE) { + patch_exception(0x1c0, exc_data_tlb_miss_bolted_book3e); + patch_exception(0x1e0, + exc_instruction_tlb_miss_bolted_book3e); + } } #endif -- cgit v1.2.3 From bbead78c06e0ddda3cc53f81ecdaa2062a56247a Mon Sep 17 00:00:00 2001 From: Scott Wood Date: Fri, 11 Oct 2013 19:22:39 -0500 Subject: powerpc/fsl-book3e-64: Use paca for hugetlb TLB1 entry selection This keeps usage coordinated for hugetlb and indirect entries, which should make entry selection more predictable and probably improve overall performance when mixing the two. Signed-off-by: Scott Wood --- arch/powerpc/mm/hugetlbpage-book3e.c | 51 +++++++++++++++++++++++++++++------- 1 file changed, 41 insertions(+), 10 deletions(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/mm/hugetlbpage-book3e.c b/arch/powerpc/mm/hugetlbpage-book3e.c index 646c4bffaeba..5e4ee2573903 100644 --- a/arch/powerpc/mm/hugetlbpage-book3e.c +++ b/arch/powerpc/mm/hugetlbpage-book3e.c @@ -8,6 +8,44 @@ #include #include +#ifdef CONFIG_PPC_FSL_BOOK3E +#ifdef CONFIG_PPC64 +static inline int tlb1_next(void) +{ + struct paca_struct *paca = get_paca(); + struct tlb_core_data *tcd; + int this, next; + + tcd = paca->tcd_ptr; + this = tcd->esel_next; + + next = this + 1; + if (next >= tcd->esel_max) + next = tcd->esel_first; + + tcd->esel_next = next; + return this; +} +#else +static inline int tlb1_next(void) +{ + int index, ncams; + + ncams = mfspr(SPRN_TLB1CFG) & TLBnCFG_N_ENTRY; + + index = __get_cpu_var(next_tlbcam_idx); + + /* Just round-robin the entries and wrap when we hit the end */ + if (unlikely(index == ncams - 1)) + __get_cpu_var(next_tlbcam_idx) = tlbcam_index; + else + __get_cpu_var(next_tlbcam_idx)++; + + return index; +} +#endif /* !PPC64 */ +#endif /* FSL */ + static inline int mmu_get_tsize(int psize) { return mmu_psize_defs[psize].enc; @@ -47,7 +85,7 @@ void book3e_hugetlb_preload(struct vm_area_struct *vma, unsigned long ea, struct mm_struct *mm; #ifdef CONFIG_PPC_FSL_BOOK3E - int index, ncams; + int index; #endif if (unlikely(is_kernel_addr(ea))) @@ -77,18 +115,11 @@ void book3e_hugetlb_preload(struct vm_area_struct *vma, unsigned long ea, } #ifdef CONFIG_PPC_FSL_BOOK3E - ncams = mfspr(SPRN_TLB1CFG) & TLBnCFG_N_ENTRY; - /* We have to use the CAM(TLB1) on FSL parts for hugepages */ - index = __get_cpu_var(next_tlbcam_idx); + index = tlb1_next(); mtspr(SPRN_MAS0, MAS0_ESEL(index) | MAS0_TLBSEL(1)); - - /* Just round-robin the entries and wrap when we hit the end */ - if (unlikely(index == ncams - 1)) - __get_cpu_var(next_tlbcam_idx) = tlbcam_index; - else - __get_cpu_var(next_tlbcam_idx)++; #endif + mas1 = MAS1_VALID | MAS1_TID(mm->context.id) | MAS1_TSIZE(tsize); mas2 = ea & ~((1UL << shift) - 1); mas2 |= (pte_val(pte) >> PTE_WIMGE_SHIFT) & MAS2_WIMGE_MASK; -- cgit v1.2.3 From be2019816e4dcdb02493da332b65a8b68b70106c Mon Sep 17 00:00:00 2001 From: Stephen Chivers Date: Thu, 9 Jan 2014 13:01:22 +1100 Subject: powerpc/embedded6xx: Add support for Motorola/Emerson MVME5100 Add support for the Motorola/Emerson MVME5100 Single Board Computer. The MVME5100 is a 6U form factor VME64 computer with: - A single MPC7410 or MPC750 CPU - A HAWK Processor Host Bridge (CPU to PCI) and MultiProcessor Interrupt Controller (MPIC) - Up to 500Mb of onboard memory - A M48T37 Real Time Clock (RTC) and Non-Volatile Memory chip - Two 16550 compatible UARTS - Two Intel E100 Fast Ethernets - Two PCI Mezzanine Card (PMC) Slots - PPCBug Firmware The HAWK PHB/MPIC is compatible with the MPC10x devices. There is no onboard disk support. This is usually provided by installing a PMC in first PMC slot. This patch revives the board support, it was present in early 2.6 series kernels. The board support in those days was by Matt Porter of MontaVista Software. CSC Australia has around 31 of these boards in service. The kernel in use for the boards is based on 2.6.31. The boards are operated without disks from a file server. This patch is based on linux-3.13-rc2 and has been boot tested. Only boards with 512 Mb of memory are known to work. Signed-off-by: Stephen Chivers Tested-by: Alessio Igor Bogani Signed-off-by: Scott Wood --- arch/powerpc/boot/Makefile | 3 +- arch/powerpc/boot/dts/mvme5100.dts | 185 +++++++++++++++++++++ arch/powerpc/boot/mvme5100.c | 27 ++++ arch/powerpc/boot/wrapper | 4 + arch/powerpc/configs/mvme5100_defconfig | 144 +++++++++++++++++ arch/powerpc/platforms/embedded6xx/Kconfig | 13 +- arch/powerpc/platforms/embedded6xx/Makefile | 1 + arch/powerpc/platforms/embedded6xx/mvme5100.c | 221 ++++++++++++++++++++++++++ 8 files changed, 596 insertions(+), 2 deletions(-) create mode 100644 arch/powerpc/boot/dts/mvme5100.dts create mode 100644 arch/powerpc/boot/mvme5100.c create mode 100644 arch/powerpc/configs/mvme5100_defconfig create mode 100644 arch/powerpc/platforms/embedded6xx/mvme5100.c (limited to 'arch/powerpc') diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile index ca7f08cc4afd..cd9ea99f9fdc 100644 --- a/arch/powerpc/boot/Makefile +++ b/arch/powerpc/boot/Makefile @@ -95,7 +95,7 @@ src-plat-$(CONFIG_FSL_SOC_BOOKE) += cuboot-85xx.c cuboot-85xx-cpm2.c src-plat-$(CONFIG_EMBEDDED6xx) += cuboot-pq2.c cuboot-mpc7448hpc2.c \ cuboot-c2k.c gamecube-head.S \ gamecube.c wii-head.S wii.c holly.c \ - prpmc2800.c + prpmc2800.c fixed-head.S mvme5100.c src-plat-$(CONFIG_AMIGAONE) += cuboot-amigaone.c src-plat-$(CONFIG_PPC_PS3) += ps3-head.S ps3-hvcall.S ps3.c src-plat-$(CONFIG_EPAPR_BOOT) += epapr.c epapr-wrapper.c @@ -286,6 +286,7 @@ image-$(CONFIG_MPC7448HPC2) += cuImage.mpc7448hpc2 image-$(CONFIG_PPC_C2K) += cuImage.c2k image-$(CONFIG_GAMECUBE) += dtbImage.gamecube image-$(CONFIG_WII) += dtbImage.wii +image-$(CONFIG_MVME5100) += dtbImage.mvme5100 # Board port in arch/powerpc/platform/amigaone/Kconfig image-$(CONFIG_AMIGAONE) += cuImage.amigaone diff --git a/arch/powerpc/boot/dts/mvme5100.dts b/arch/powerpc/boot/dts/mvme5100.dts new file mode 100644 index 000000000000..1ecb341a232a --- /dev/null +++ b/arch/powerpc/boot/dts/mvme5100.dts @@ -0,0 +1,185 @@ +/* + * Device Tree Source for Motorola/Emerson MVME5100. + * + * Copyright 2013 CSC Australia Pty. Ltd. + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without + * any warranty of any kind, whether express or implied. + */ + +/dts-v1/; + +/ { + model = "MVME5100"; + compatible = "MVME5100"; + #address-cells = <1>; + #size-cells = <1>; + + aliases { + serial0 = &serial0; + pci0 = &pci0; + }; + + cpus { + #address-cells = <1>; + #size-cells = <0>; + + PowerPC,7410 { + device_type = "cpu"; + reg = <0x0>; + /* Following required by dtc but not used */ + d-cache-line-size = <32>; + i-cache-line-size = <32>; + i-cache-size = <32768>; + d-cache-size = <32768>; + timebase-frequency = <25000000>; + clock-frequency = <500000000>; + bus-frequency = <100000000>; + }; + }; + + memory { + device_type = "memory"; + reg = <0x0 0x20000000>; + }; + + hawk@fef80000 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "hawk-bridge", "simple-bus"; + ranges = <0x0 0xfef80000 0x10000>; + reg = <0xfef80000 0x10000>; + + serial0: serial@8000 { + device_type = "serial"; + compatible = "ns16550"; + reg = <0x8000 0x80>; + reg-shift = <4>; + clock-frequency = <1843200>; + current-speed = <9600>; + interrupts = <1 1>; // IRQ1 Level Active Low. + interrupt-parent = <&mpic>; + }; + + serial1: serial@8200 { + device_type = "serial"; + compatible = "ns16550"; + reg = <0x8200 0x80>; + reg-shift = <4>; + clock-frequency = <1843200>; + current-speed = <9600>; + interrupts = <1 1>; // IRQ1 Level Active Low. + interrupt-parent = <&mpic>; + }; + + mpic: interrupt-controller@f3f80000 { + #interrupt-cells = <2>; + #address-cells = <0>; + device_type = "open-pic"; + compatible = "chrp,open-pic"; + interrupt-controller; + reg = <0xf3f80000 0x40000>; + }; + }; + + pci0: pci@feff0000 { + #address-cells = <3>; + #size-cells = <2>; + #interrupt-cells = <1>; + device_type = "pci"; + compatible = "hawk-pci"; + reg = <0xfec00000 0x400000>; + 8259-interrupt-acknowledge = <0xfeff0030>; + ranges = <0x1000000 0x0 0x0 0xfe000000 0x0 0x800000 + 0x2000000 0x0 0x80000000 0x80000000 0x0 0x74000000>; + bus-range = <0 255>; + clock-frequency = <33333333>; + interrupt-parent = <&mpic>; + interrupt-map-mask = <0xf800 0x0 0x0 0x7>; + interrupt-map = < + + /* + * This definition (IDSEL 11) duplicates the + * interrupts definition in the i8259 + * interrupt controller below. + * + * Do not change the interrupt sense/polarity from + * 0x2 to anything else, doing so will cause endless + * "spurious" i8259 interrupts to be fielded. + */ + // IDSEL 11 - iPMC712 PCI/ISA Bridge + 0x5800 0x0 0x0 0x1 &mpic 0x0 0x2 + 0x5800 0x0 0x0 0x2 &mpic 0x0 0x2 + 0x5800 0x0 0x0 0x3 &mpic 0x0 0x2 + 0x5800 0x0 0x0 0x4 &mpic 0x0 0x2 + + /* IDSEL 12 - Not Used */ + + /* IDSEL 13 - Universe VME Bridge */ + 0x6800 0x0 0x0 0x1 &mpic 0x5 0x1 + 0x6800 0x0 0x0 0x2 &mpic 0x6 0x1 + 0x6800 0x0 0x0 0x3 &mpic 0x7 0x1 + 0x6800 0x0 0x0 0x4 &mpic 0x8 0x1 + + /* IDSEL 14 - ENET 1 */ + 0x7000 0x0 0x0 0x1 &mpic 0x2 0x1 + + /* IDSEL 15 - Not Used */ + + /* IDSEL 16 - PMC Slot 1 */ + 0x8000 0x0 0x0 0x1 &mpic 0x9 0x1 + 0x8000 0x0 0x0 0x2 &mpic 0xa 0x1 + 0x8000 0x0 0x0 0x3 &mpic 0xb 0x1 + 0x8000 0x0 0x0 0x4 &mpic 0xc 0x1 + + /* IDSEL 17 - PMC Slot 2 */ + 0x8800 0x0 0x0 0x1 &mpic 0xc 0x1 + 0x8800 0x0 0x0 0x2 &mpic 0x9 0x1 + 0x8800 0x0 0x0 0x3 &mpic 0xa 0x1 + 0x8800 0x0 0x0 0x4 &mpic 0xb 0x1 + + /* IDSEL 18 - Not Used */ + + /* IDSEL 19 - ENET 2 */ + 0x9800 0x0 0x0 0x1 &mpic 0xd 0x1 + + /* IDSEL 20 - PMCSPAN (PCI-X) */ + 0xa000 0x0 0x0 0x1 &mpic 0x9 0x1 + 0xa000 0x0 0x0 0x2 &mpic 0xa 0x1 + 0xa000 0x0 0x0 0x3 &mpic 0xb 0x1 + 0xa000 0x0 0x0 0x4 &mpic 0xc 0x1 + + >; + + isa { + #address-cells = <2>; + #size-cells = <1>; + #interrupt-cells = <2>; + device_type = "isa"; + compatible = "isa"; + ranges = <0x00000001 0 0x01000000 0 0x00000000 0x00001000>; + interrupt-parent = <&i8259>; + + i8259: interrupt-controller@20 { + #interrupt-cells = <2>; + #address-cells = <0>; + interrupts = <0 2>; + device_type = "interrupt-controller"; + compatible = "chrp,iic"; + interrupt-controller; + reg = <1 0x00000020 0x00000002 + 1 0x000000a0 0x00000002 + 1 0x000004d0 0x00000002>; + interrupt-parent = <&mpic>; + }; + + }; + + }; + + chosen { + linux,stdout-path = &serial0; + }; + +}; diff --git a/arch/powerpc/boot/mvme5100.c b/arch/powerpc/boot/mvme5100.c new file mode 100644 index 000000000000..cb865f83c60b --- /dev/null +++ b/arch/powerpc/boot/mvme5100.c @@ -0,0 +1,27 @@ +/* + * Motorola/Emerson MVME5100 with PPCBug firmware. + * + * Author: Stephen Chivers + * + * Copyright 2013 CSC Australia Pty. Ltd. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + */ +#include "types.h" +#include "ops.h" +#include "io.h" + +BSS_STACK(4096); + +void platform_init(unsigned long r3, unsigned long r4, unsigned long r5) +{ + u32 heapsize; + + heapsize = 0x8000000 - (u32)_end; /* 128M */ + simple_alloc_init(_end, heapsize, 32, 64); + fdt_init(_dtb_start); + serial_console_init(); +} diff --git a/arch/powerpc/boot/wrapper b/arch/powerpc/boot/wrapper index 2e1af74a64be..d27a25518b01 100755 --- a/arch/powerpc/boot/wrapper +++ b/arch/powerpc/boot/wrapper @@ -265,6 +265,10 @@ epapr) link_address='0x20000000' pie=-pie ;; +mvme5100) + platformo="$object/fixed-head.o $object/mvme5100.o" + binary=y + ;; esac vmz="$tmpdir/`basename \"$kernel\"`.$ext" diff --git a/arch/powerpc/configs/mvme5100_defconfig b/arch/powerpc/configs/mvme5100_defconfig new file mode 100644 index 000000000000..93c7752e2dbb --- /dev/null +++ b/arch/powerpc/configs/mvme5100_defconfig @@ -0,0 +1,144 @@ +CONFIG_SYSVIPC=y +CONFIG_POSIX_MQUEUE=y +CONFIG_NO_HZ=y +CONFIG_HIGH_RES_TIMERS=y +CONFIG_IKCONFIG=y +CONFIG_IKCONFIG_PROC=y +CONFIG_LOG_BUF_SHIFT=14 +# CONFIG_UTS_NS is not set +# CONFIG_IPC_NS is not set +# CONFIG_PID_NS is not set +# CONFIG_NET_NS is not set +CONFIG_CC_OPTIMIZE_FOR_SIZE=y +# CONFIG_COMPAT_BRK is not set +CONFIG_MODULES=y +CONFIG_MODULE_UNLOAD=y +# CONFIG_BLK_DEV_BSG is not set +# CONFIG_PPC_CHRP is not set +# CONFIG_PPC_PMAC is not set +CONFIG_EMBEDDED6xx=y +CONFIG_MVME5100=y +CONFIG_KVM_GUEST=y +CONFIG_HZ_100=y +# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set +# CONFIG_COMPACTION is not set +CONFIG_CMDLINE_BOOL=y +CONFIG_CMDLINE="console=ttyS0,9600 ip=dhcp root=/dev/nfs" +CONFIG_NET=y +CONFIG_PACKET=y +CONFIG_UNIX=y +CONFIG_INET=y +CONFIG_IP_MULTICAST=y +CONFIG_IP_PNP=y +CONFIG_IP_PNP_DHCP=y +CONFIG_IP_PNP_BOOTP=y +# CONFIG_INET_LRO is not set +# CONFIG_IPV6 is not set +CONFIG_NETFILTER=y +CONFIG_NF_CONNTRACK=m +CONFIG_NF_CT_PROTO_SCTP=m +CONFIG_NF_CONNTRACK_AMANDA=m +CONFIG_NF_CONNTRACK_FTP=m +CONFIG_NF_CONNTRACK_H323=m +CONFIG_NF_CONNTRACK_IRC=m +CONFIG_NF_CONNTRACK_NETBIOS_NS=m +CONFIG_NF_CONNTRACK_PPTP=m +CONFIG_NF_CONNTRACK_SIP=m +CONFIG_NF_CONNTRACK_TFTP=m +CONFIG_NETFILTER_XT_MATCH_MAC=m +CONFIG_NETFILTER_XT_MATCH_PKTTYPE=m +CONFIG_NETFILTER_XT_MATCH_STATE=m +CONFIG_NF_CONNTRACK_IPV4=m +CONFIG_IP_NF_IPTABLES=m +CONFIG_IP_NF_FILTER=m +CONFIG_IP_NF_TARGET_REJECT=m +CONFIG_IP_NF_MANGLE=m +CONFIG_IP_NF_TARGET_ECN=m +CONFIG_IP_NF_TARGET_TTL=m +CONFIG_IP_NF_RAW=m +CONFIG_IP_NF_ARPTABLES=m +CONFIG_IP_NF_ARPFILTER=m +CONFIG_IP_NF_ARP_MANGLE=m +CONFIG_LAPB=m +CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" +CONFIG_PROC_DEVICETREE=y +CONFIG_BLK_DEV_LOOP=y +CONFIG_BLK_DEV_RAM=y +CONFIG_BLK_DEV_RAM_COUNT=2 +CONFIG_BLK_DEV_RAM_SIZE=8192 +CONFIG_EEPROM_LEGACY=m +CONFIG_NETDEVICES=y +CONFIG_TUN=m +# CONFIG_NET_VENDOR_3COM is not set +CONFIG_E100=y +# CONFIG_WLAN is not set +# CONFIG_INPUT_MOUSEDEV_PSAUX is not set +# CONFIG_INPUT_KEYBOARD is not set +# CONFIG_INPUT_MOUSE is not set +# CONFIG_SERIO is not set +CONFIG_SERIAL_8250=y +CONFIG_SERIAL_8250_CONSOLE=y +CONFIG_SERIAL_8250_NR_UARTS=10 +CONFIG_SERIAL_8250_EXTENDED=y +CONFIG_SERIAL_8250_MANY_PORTS=y +CONFIG_SERIAL_8250_SHARE_IRQ=y +CONFIG_SERIAL_OF_PLATFORM=y +CONFIG_HW_RANDOM=y +CONFIG_I2C=y +CONFIG_I2C_CHARDEV=y +CONFIG_I2C_MPC=y +# CONFIG_HWMON is not set +CONFIG_VIDEO_OUTPUT_CONTROL=m +# CONFIG_VGA_CONSOLE is not set +# CONFIG_HID is not set +# CONFIG_USB_SUPPORT is not set +# CONFIG_IOMMU_SUPPORT is not set +CONFIG_VME_BUS=m +CONFIG_VME_CA91CX42=m +CONFIG_EXT2_FS=m +CONFIG_EXT3_FS=m +# CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set +CONFIG_XFS_FS=m +CONFIG_ISO9660_FS=m +CONFIG_JOLIET=y +CONFIG_ZISOFS=y +CONFIG_UDF_FS=m +CONFIG_MSDOS_FS=m +CONFIG_VFAT_FS=m +CONFIG_PROC_KCORE=y +CONFIG_TMPFS=y +CONFIG_NFS_FS=y +CONFIG_NFS_V3_ACL=y +CONFIG_NFS_V4=y +CONFIG_ROOT_NFS=y +CONFIG_NFSD=m +CONFIG_NFSD_V3=y +CONFIG_CIFS=m +CONFIG_NLS=y +CONFIG_NLS_CODEPAGE_437=m +CONFIG_NLS_CODEPAGE_932=m +CONFIG_NLS_ISO8859_1=m +CONFIG_NLS_UTF8=m +CONFIG_CRC_CCITT=m +CONFIG_CRC_T10DIF=y +CONFIG_XZ_DEC=y +CONFIG_XZ_DEC_X86=y +CONFIG_XZ_DEC_IA64=y +CONFIG_XZ_DEC_ARM=y +CONFIG_XZ_DEC_ARMTHUMB=y +CONFIG_XZ_DEC_SPARC=y +CONFIG_MAGIC_SYSRQ=y +CONFIG_DEBUG_KERNEL=y +CONFIG_DETECT_HUNG_TASK=y +CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=20 +CONFIG_CRYPTO_CBC=y +CONFIG_CRYPTO_PCBC=m +CONFIG_CRYPTO_MD5=y +CONFIG_CRYPTO_MICHAEL_MIC=m +CONFIG_CRYPTO_SHA1=m +CONFIG_CRYPTO_BLOWFISH=m +CONFIG_CRYPTO_DES=y +CONFIG_CRYPTO_SERPENT=m +CONFIG_CRYPTO_TWOFISH=m +CONFIG_CRYPTO_DEFLATE=m +# CONFIG_CRYPTO_ANSI_CPRNG is not set diff --git a/arch/powerpc/platforms/embedded6xx/Kconfig b/arch/powerpc/platforms/embedded6xx/Kconfig index 302ba43d73a1..6d3c7a9fd047 100644 --- a/arch/powerpc/platforms/embedded6xx/Kconfig +++ b/arch/powerpc/platforms/embedded6xx/Kconfig @@ -67,6 +67,18 @@ config PPC_C2K This option enables support for the GE Fanuc C2K board (formerly an SBS board). +config MVME5100 + bool "Motorola/Emerson MVME5100" + depends on EMBEDDED6xx + select MPIC + select PCI + select PPC_INDIRECT_PCI + select PPC_I8259 + select PPC_NATIVE + help + This option enables support for the Motorola (now Emerson) MVME5100 + board. + config TSI108_BRIDGE bool select PCI @@ -113,4 +125,3 @@ config WII help Select WII if configuring for the Nintendo Wii. More information at: - diff --git a/arch/powerpc/platforms/embedded6xx/Makefile b/arch/powerpc/platforms/embedded6xx/Makefile index 66c23e423f40..cdd48d402b93 100644 --- a/arch/powerpc/platforms/embedded6xx/Makefile +++ b/arch/powerpc/platforms/embedded6xx/Makefile @@ -11,3 +11,4 @@ obj-$(CONFIG_USBGECKO_UDBG) += usbgecko_udbg.o obj-$(CONFIG_GAMECUBE_COMMON) += flipper-pic.o obj-$(CONFIG_GAMECUBE) += gamecube.o obj-$(CONFIG_WII) += wii.o hlwd-pic.o +obj-$(CONFIG_MVME5100) += mvme5100.o diff --git a/arch/powerpc/platforms/embedded6xx/mvme5100.c b/arch/powerpc/platforms/embedded6xx/mvme5100.c new file mode 100644 index 000000000000..25e3bfb64efb --- /dev/null +++ b/arch/powerpc/platforms/embedded6xx/mvme5100.c @@ -0,0 +1,221 @@ +/* + * Board setup routines for the Motorola/Emerson MVME5100. + * + * Copyright 2013 CSC Australia Pty. Ltd. + * + * Based on earlier code by: + * + * Matt Porter, MontaVista Software Inc. + * Copyright 2001 MontaVista Software Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * Author: Stephen Chivers + * + */ + +#include + +#include +#include +#include +#include +#include +#include + +#define HAWK_MPIC_SIZE 0x00040000U +#define MVME5100_PCI_MEM_OFFSET 0x00000000 + +/* Board register addresses. */ +#define BOARD_STATUS_REG 0xfef88080 +#define BOARD_MODFAIL_REG 0xfef88090 +#define BOARD_MODRST_REG 0xfef880a0 +#define BOARD_TBEN_REG 0xfef880c0 +#define BOARD_SW_READ_REG 0xfef880e0 +#define BOARD_GEO_ADDR_REG 0xfef880e8 +#define BOARD_EXT_FEATURE1_REG 0xfef880f0 +#define BOARD_EXT_FEATURE2_REG 0xfef88100 + +static phys_addr_t pci_membase; +static u_char *restart; + +static void mvme5100_8259_cascade(unsigned int irq, struct irq_desc *desc) +{ + struct irq_chip *chip = irq_desc_get_chip(desc); + unsigned int cascade_irq = i8259_irq(); + + if (cascade_irq != NO_IRQ) + generic_handle_irq(cascade_irq); + + chip->irq_eoi(&desc->irq_data); +} + +static void __init mvme5100_pic_init(void) +{ + struct mpic *mpic; + struct device_node *np; + struct device_node *cp = NULL; + unsigned int cirq; + unsigned long intack = 0; + const u32 *prop = NULL; + + np = of_find_node_by_type(NULL, "open-pic"); + if (!np) { + pr_err("Could not find open-pic node\n"); + return; + } + + mpic = mpic_alloc(np, pci_membase, 0, 16, 256, " OpenPIC "); + + BUG_ON(mpic == NULL); + of_node_put(np); + + mpic_assign_isu(mpic, 0, pci_membase + 0x10000); + + mpic_init(mpic); + + cp = of_find_compatible_node(NULL, NULL, "chrp,iic"); + if (cp == NULL) { + pr_warn("mvme5100_pic_init: couldn't find i8259\n"); + return; + } + + cirq = irq_of_parse_and_map(cp, 0); + if (cirq == NO_IRQ) { + pr_warn("mvme5100_pic_init: no cascade interrupt?\n"); + return; + } + + np = of_find_compatible_node(NULL, "pci", "mpc10x-pci"); + if (np) { + prop = of_get_property(np, "8259-interrupt-acknowledge", NULL); + + if (prop) + intack = prop[0]; + + of_node_put(np); + } + + if (intack) + pr_debug("mvme5100_pic_init: PCI 8259 intack at 0x%016lx\n", + intack); + + i8259_init(cp, intack); + of_node_put(cp); + irq_set_chained_handler(cirq, mvme5100_8259_cascade); +} + +static int __init mvme5100_add_bridge(struct device_node *dev) +{ + const int *bus_range; + int len; + struct pci_controller *hose; + unsigned short devid; + + pr_info("Adding PCI host bridge %s\n", dev->full_name); + + bus_range = of_get_property(dev, "bus-range", &len); + + hose = pcibios_alloc_controller(dev); + if (hose == NULL) + return -ENOMEM; + + hose->first_busno = bus_range ? bus_range[0] : 0; + hose->last_busno = bus_range ? bus_range[1] : 0xff; + + setup_indirect_pci(hose, 0xfe000cf8, 0xfe000cfc, 0); + + pci_process_bridge_OF_ranges(hose, dev, 1); + + early_read_config_word(hose, 0, 0, PCI_DEVICE_ID, &devid); + + if (devid != PCI_DEVICE_ID_MOTOROLA_HAWK) { + pr_err("HAWK PHB not present?\n"); + return 0; + } + + early_read_config_dword(hose, 0, 0, PCI_BASE_ADDRESS_1, &pci_membase); + + if (pci_membase == 0) { + pr_err("HAWK PHB mibar not correctly set?\n"); + return 0; + } + + pr_info("mvme5100_pic_init: pci_membase: %x\n", pci_membase); + + return 0; +} + +static struct of_device_id mvme5100_of_bus_ids[] __initdata = { + { .compatible = "hawk-bridge", }, + {}, +}; + +/* + * Setup the architecture + */ +static void __init mvme5100_setup_arch(void) +{ + struct device_node *np; + + if (ppc_md.progress) + ppc_md.progress("mvme5100_setup_arch()", 0); + + for_each_compatible_node(np, "pci", "hawk-pci") + mvme5100_add_bridge(np); + + restart = ioremap(BOARD_MODRST_REG, 4); +} + + +static void mvme5100_show_cpuinfo(struct seq_file *m) +{ + seq_puts(m, "Vendor\t\t: Motorola/Emerson\n"); + seq_puts(m, "Machine\t\t: MVME5100\n"); +} + +static void mvme5100_restart(char *cmd) +{ + + local_irq_disable(); + mtmsr(mfmsr() | MSR_IP); + + out_8((u_char *) restart, 0x01); + + while (1) + ; +} + +/* + * Called very early, device-tree isn't unflattened + */ +static int __init mvme5100_probe(void) +{ + unsigned long root = of_get_flat_dt_root(); + + return of_flat_dt_is_compatible(root, "MVME5100"); +} + +static int __init probe_of_platform_devices(void) +{ + + of_platform_bus_probe(NULL, mvme5100_of_bus_ids, NULL); + return 0; +} + +machine_device_initcall(mvme5100, probe_of_platform_devices); + +define_machine(mvme5100) { + .name = "MVME5100", + .probe = mvme5100_probe, + .setup_arch = mvme5100_setup_arch, + .init_IRQ = mvme5100_pic_init, + .show_cpuinfo = mvme5100_show_cpuinfo, + .get_irq = mpic_get_irq, + .restart = mvme5100_restart, + .calibrate_decr = generic_calibrate_decr, + .progress = udbg_progress, +}; -- cgit v1.2.3 From 297649b9f516a840d56bc2df6dda5a6f9c50cea5 Mon Sep 17 00:00:00 2001 From: Wang Dongsheng Date: Tue, 7 Jan 2014 14:26:42 +0800 Subject: powerpc/dts: fix lbc lack of error interrupt P1020, P1021, P1022, P1023 when the lbc get error, the error interrupt will be triggered. The corresponding interrupt is internal IRQ0. So system have to process the lbc IRQ0 interrupt. The corresponding lbc general interrupt is internal IRQ3. Signed-off-by: Wang Dongsheng [scottwood@freescale.com: bracketed individual list elements] Signed-off-by: Scott Wood --- arch/powerpc/boot/dts/fsl/p1020si-post.dtsi | 3 ++- arch/powerpc/boot/dts/fsl/p1021si-post.dtsi | 3 ++- arch/powerpc/boot/dts/fsl/p1022si-post.dtsi | 3 ++- arch/powerpc/boot/dts/fsl/p1023si-post.dtsi | 3 ++- 4 files changed, 8 insertions(+), 4 deletions(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/boot/dts/fsl/p1020si-post.dtsi b/arch/powerpc/boot/dts/fsl/p1020si-post.dtsi index 68cc5e7f6477..642dc3a83d0e 100644 --- a/arch/powerpc/boot/dts/fsl/p1020si-post.dtsi +++ b/arch/powerpc/boot/dts/fsl/p1020si-post.dtsi @@ -36,7 +36,8 @@ #address-cells = <2>; #size-cells = <1>; compatible = "fsl,p1020-elbc", "fsl,elbc", "simple-bus"; - interrupts = <19 2 0 0>; + interrupts = <19 2 0 0>, + <16 2 0 0>; }; /* controller at 0x9000 */ diff --git a/arch/powerpc/boot/dts/fsl/p1021si-post.dtsi b/arch/powerpc/boot/dts/fsl/p1021si-post.dtsi index adb82fd9057f..407cb5fd0f5b 100644 --- a/arch/powerpc/boot/dts/fsl/p1021si-post.dtsi +++ b/arch/powerpc/boot/dts/fsl/p1021si-post.dtsi @@ -36,7 +36,8 @@ #address-cells = <2>; #size-cells = <1>; compatible = "fsl,p1021-elbc", "fsl,elbc", "simple-bus"; - interrupts = <19 2 0 0>; + interrupts = <19 2 0 0>, + <16 2 0 0>; }; /* controller at 0x9000 */ diff --git a/arch/powerpc/boot/dts/fsl/p1022si-post.dtsi b/arch/powerpc/boot/dts/fsl/p1022si-post.dtsi index e179803a81ef..ebf202234549 100644 --- a/arch/powerpc/boot/dts/fsl/p1022si-post.dtsi +++ b/arch/powerpc/boot/dts/fsl/p1022si-post.dtsi @@ -40,7 +40,8 @@ * pin muxing when the DIU is enabled. */ compatible = "fsl,p1022-elbc", "fsl,elbc"; - interrupts = <19 2 0 0>; + interrupts = <19 2 0 0>, + <16 2 0 0>; }; /* controller at 0x9000 */ diff --git a/arch/powerpc/boot/dts/fsl/p1023si-post.dtsi b/arch/powerpc/boot/dts/fsl/p1023si-post.dtsi index f1105bffa915..81437fdf1db4 100644 --- a/arch/powerpc/boot/dts/fsl/p1023si-post.dtsi +++ b/arch/powerpc/boot/dts/fsl/p1023si-post.dtsi @@ -36,7 +36,8 @@ #address-cells = <2>; #size-cells = <1>; compatible = "fsl,p1023-elbc", "fsl,elbc", "simple-bus"; - interrupts = <19 2 0 0>; + interrupts = <19 2 0 0>, + <16 2 0 0>; }; /* controller at 0xa000 */ -- cgit v1.2.3 From a655f724df2c0e1634477c7e89da81477a691c0f Mon Sep 17 00:00:00 2001 From: Shaohui Xie Date: Tue, 7 Jan 2014 14:27:41 +0800 Subject: powerpc/85xx: handle the eLBC error interrupt if it exists in dts On P1020, P1021, P1022, and P1023, eLBC event interrupts are routed to internal interrupt 3 while ELBC error interrupts are routed to internal interrupt 0. We need to call request_irq for each. Signed-off-by: Shaohui Xie Signed-off-by: Wang Dongsheng Signed-off-by: Kumar Gala [scottwood@freescale.com: reworded commit message and fixed author] Signed-off-by: Scott Wood --- arch/powerpc/include/asm/fsl_lbc.h | 2 +- arch/powerpc/sysdev/fsl_lbc.c | 31 +++++++++++++++++++++++++------ 2 files changed, 26 insertions(+), 7 deletions(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/include/asm/fsl_lbc.h b/arch/powerpc/include/asm/fsl_lbc.h index 420b45368fcf..067fb0dca549 100644 --- a/arch/powerpc/include/asm/fsl_lbc.h +++ b/arch/powerpc/include/asm/fsl_lbc.h @@ -285,7 +285,7 @@ struct fsl_lbc_ctrl { /* device info */ struct device *dev; struct fsl_lbc_regs __iomem *regs; - int irq; + int irq[2]; wait_queue_head_t irq_wait; spinlock_t lock; void *nand; diff --git a/arch/powerpc/sysdev/fsl_lbc.c b/arch/powerpc/sysdev/fsl_lbc.c index 6bc5a546d49f..d631022ffb4b 100644 --- a/arch/powerpc/sysdev/fsl_lbc.c +++ b/arch/powerpc/sysdev/fsl_lbc.c @@ -214,10 +214,14 @@ static irqreturn_t fsl_lbc_ctrl_irq(int irqno, void *data) struct fsl_lbc_ctrl *ctrl = data; struct fsl_lbc_regs __iomem *lbc = ctrl->regs; u32 status; + unsigned long flags; + spin_lock_irqsave(&fsl_lbc_lock, flags); status = in_be32(&lbc->ltesr); - if (!status) + if (!status) { + spin_unlock_irqrestore(&fsl_lbc_lock, flags); return IRQ_NONE; + } out_be32(&lbc->ltesr, LTESR_CLEAR); out_be32(&lbc->lteatr, 0); @@ -260,6 +264,7 @@ static irqreturn_t fsl_lbc_ctrl_irq(int irqno, void *data) if (status & ~LTESR_MASK) dev_err(ctrl->dev, "Unknown error: " "LTESR 0x%08X\n", status); + spin_unlock_irqrestore(&fsl_lbc_lock, flags); return IRQ_HANDLED; } @@ -298,8 +303,8 @@ static int fsl_lbc_ctrl_probe(struct platform_device *dev) goto err; } - fsl_lbc_ctrl_dev->irq = irq_of_parse_and_map(dev->dev.of_node, 0); - if (fsl_lbc_ctrl_dev->irq == NO_IRQ) { + fsl_lbc_ctrl_dev->irq[0] = irq_of_parse_and_map(dev->dev.of_node, 0); + if (!fsl_lbc_ctrl_dev->irq[0]) { dev_err(&dev->dev, "failed to get irq resource\n"); ret = -ENODEV; goto err; @@ -311,20 +316,34 @@ static int fsl_lbc_ctrl_probe(struct platform_device *dev) if (ret < 0) goto err; - ret = request_irq(fsl_lbc_ctrl_dev->irq, fsl_lbc_ctrl_irq, 0, + ret = request_irq(fsl_lbc_ctrl_dev->irq[0], fsl_lbc_ctrl_irq, 0, "fsl-lbc", fsl_lbc_ctrl_dev); if (ret != 0) { dev_err(&dev->dev, "failed to install irq (%d)\n", - fsl_lbc_ctrl_dev->irq); - ret = fsl_lbc_ctrl_dev->irq; + fsl_lbc_ctrl_dev->irq[0]); + ret = fsl_lbc_ctrl_dev->irq[0]; goto err; } + fsl_lbc_ctrl_dev->irq[1] = irq_of_parse_and_map(dev->dev.of_node, 1); + if (fsl_lbc_ctrl_dev->irq[1]) { + ret = request_irq(fsl_lbc_ctrl_dev->irq[1], fsl_lbc_ctrl_irq, + IRQF_SHARED, "fsl-lbc-err", fsl_lbc_ctrl_dev); + if (ret) { + dev_err(&dev->dev, "failed to install irq (%d)\n", + fsl_lbc_ctrl_dev->irq[1]); + ret = fsl_lbc_ctrl_dev->irq[1]; + goto err1; + } + } + /* Enable interrupts for any detected events */ out_be32(&fsl_lbc_ctrl_dev->regs->lteir, LTEIR_ENABLE); return 0; +err1: + free_irq(fsl_lbc_ctrl_dev->irq[0], fsl_lbc_ctrl_dev); err: iounmap(fsl_lbc_ctrl_dev->regs); kfree(fsl_lbc_ctrl_dev); -- cgit v1.2.3 From 78f3d050c34b690c0ac5f20e28a2f3906ef822d7 Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Thu, 9 Jan 2014 15:33:35 -0500 Subject: powerpc: fix 8xx and 6xx final link failures As of commit b81f18e55e9f4ea81759bcb00fea295de679bbe8 ("powerpc/boot: Only build board support files when required.") the two defconfigs ep88xc_defconfig and storcenter_defconfig would fail final link as follows: WRAP arch/powerpc/boot/dtbImage.ep88xc arch/powerpc/boot/wrapper.a(mpc8xx.o): In function `mpc885_get_clock': arch/powerpc/boot/mpc8xx.c:30: undefined reference to `fsl_get_immr' make[1]: *** [arch/powerpc/boot/dtbImage.ep88xc] Error 1 ...and... WRAP arch/powerpc/boot/cuImage.storcenter arch/powerpc/boot/cuboot-pq2.o: In function `pq2_platform_fixups': cuboot-pq2.c:(.text+0x324): undefined reference to `fsl_get_immr' make[1]: *** [arch/powerpc/boot/cuImage.storcenter] Error 1 We need the fsl-soc board files built for these two platforms. Cc: Tony Breeds Cc: Benjamin Herrenschmidt Fixes: b81f18e55e9f ("powerpc/boot: Only build board support files when required.") Signed-off-by: Paul Gortmaker Signed-off-by: Scott Wood --- arch/powerpc/boot/Makefile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile index cd9ea99f9fdc..90e9d9548660 100644 --- a/arch/powerpc/boot/Makefile +++ b/arch/powerpc/boot/Makefile @@ -71,9 +71,9 @@ src-wlib-y := string.S crt0.S crtsavres.S stdio.c main.c \ uartlite.c mpc52xx-psc.c src-wlib-$(CONFIG_40x) += 4xx.c planetcore.c src-wlib-$(CONFIG_44x) += 4xx.c ebony.c bamboo.c -src-wlib-$(CONFIG_8xx) += mpc8xx.c planetcore.c +src-wlib-$(CONFIG_8xx) += mpc8xx.c planetcore.c fsl-soc.c src-wlib-$(CONFIG_PPC_82xx) += pq2.c fsl-soc.c planetcore.c -src-wlib-$(CONFIG_EMBEDDED6xx) += mv64x60.c mv64x60_i2c.c ugecon.c +src-wlib-$(CONFIG_EMBEDDED6xx) += mv64x60.c mv64x60_i2c.c ugecon.c fsl-soc.c src-plat-y := of.c epapr.c src-plat-$(CONFIG_40x) += fixed-head.S ep405.c cuboot-hotfoot.c \ -- cgit v1.2.3 From 1149e8a73ffea953d8d6615ee37bce820a3eaeb8 Mon Sep 17 00:00:00 2001 From: Scott Wood Date: Tue, 12 Jun 2012 17:02:32 -0500 Subject: powerpc/booke-64: fix tlbsrx. path in bolted tlb handler It was branching to the cleanup part of the non-bolted handler, which would have been bad if there were any chips with tlbsrx. that use the bolted handler. Signed-off-by: Scott Wood --- arch/powerpc/mm/tlb_low_64e.S | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/mm/tlb_low_64e.S b/arch/powerpc/mm/tlb_low_64e.S index 75f5d2777f61..16250b162375 100644 --- a/arch/powerpc/mm/tlb_low_64e.S +++ b/arch/powerpc/mm/tlb_low_64e.S @@ -136,7 +136,7 @@ BEGIN_MMU_FTR_SECTION */ PPC_TLBSRX_DOT(0,R16) ldx r14,r14,r15 /* grab pgd entry */ - beq normal_tlb_miss_done /* tlb exists already, bail */ + beq tlb_miss_done_bolted /* tlb exists already, bail */ MMU_FTR_SECTION_ELSE ldx r14,r14,r15 /* grab pgd entry */ ALT_MMU_FTR_SECTION_END_IFSET(MMU_FTR_USE_TLBRSRV) @@ -192,6 +192,7 @@ ALT_MMU_FTR_SECTION_END_IFSET(MMU_FTR_USE_TLBRSRV) mtspr SPRN_MAS7_MAS3,r15 tlbwe +tlb_miss_done_bolted: TLB_MISS_STATS_X(MMSTAT_TLB_MISS_NORM_OK) tlb_epilog_bolted rfi -- cgit v1.2.3 From ed2ddc56e758d516c5699260ada4d68434dfe1dc Mon Sep 17 00:00:00 2001 From: Diana Craciun Date: Thu, 14 Mar 2013 16:55:11 +0200 Subject: powerpc: Replaced tlbilx with tlbwe in the initialization code On Freescale e6500 cores EPCR[DGTMI] controls whether guest supervisor state can execute TLB management instructions. If EPCR[DGTMI]=0 tlbwe and tlbilx are allowed to execute normally in the guest state. A hypervisor may choose to virtualize TLB1 and for this purpose it may use IPROT to protect the entries for being invalidated by the guest. However, because tlbwe and tlbilx execution in the guest state are sharing the same bit, it is not possible to have a scenario where tlbwe is allowed to be executed in guest state and tlbilx traps. When guest TLB management instructions are allowed to be executed in guest state the guest cannot use tlbilx to invalidate TLB1 guest entries. Linux is using tlbilx in the boot code to invalidate the temporary entries it creates when initializing the MMU. The patch is replacing the usage of tlbilx in initialization code with tlbwe with VALID bit cleared. Linux is also using tlbilx in other contexts (like huge pages or indirect entries) but removing the tlbilx from the initialization code offers the possibility to have scenarios under hypervisor which are not using huge pages or indirect entries. Signed-off-by: Diana Craciun Signed-off-by: Scott Wood --- arch/powerpc/kernel/exceptions-64e.S | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S index 4d5a0b1034e8..063b65dd4f27 100644 --- a/arch/powerpc/kernel/exceptions-64e.S +++ b/arch/powerpc/kernel/exceptions-64e.S @@ -1068,12 +1068,9 @@ skpinv: addi r6,r6,1 /* Increment */ mtspr SPRN_MAS0,r3 tlbre mfspr r6,SPRN_MAS1 - rlwinm r6,r6,0,2,0 /* clear IPROT */ + rlwinm r6,r6,0,2,31 /* clear IPROT and VALID */ mtspr SPRN_MAS1,r6 tlbwe - - /* Invalidate TLB1 */ - PPC_TLBILX_ALL(0,R0) sync isync @@ -1127,12 +1124,9 @@ skpinv: addi r6,r6,1 /* Increment */ mtspr SPRN_MAS0,r4 tlbre mfspr r5,SPRN_MAS1 - rlwinm r5,r5,0,2,0 /* clear IPROT */ + rlwinm r5,r5,0,2,31 /* clear IPROT and VALID */ mtspr SPRN_MAS1,r5 tlbwe - - /* Invalidate TLB1 */ - PPC_TLBILX_ALL(0,R0) sync isync -- cgit v1.2.3 From f4093e2ea7f571ef22c35cde36a606c43c978e82 Mon Sep 17 00:00:00 2001 From: Shengzhou Liu Date: Wed, 25 Dec 2013 18:06:55 +0800 Subject: powerpc/85xx/dts: add third elo3 dma component Add elo3-dma-2.dtsi to support the third DMA controller. This is used on T2080, T4240, B4860, etc. FSL MPIC v4.3 adds a new discontiguous address range for internal interrupts, e.g. internal interrupt 0 is at offset 0x200 and thus interrupt number is: 0x200 >> 5 = 16 in the device tree. DMA controller 3 channel 0 internal interrupt 240 is at offset 0x3a00, and thus the corresponding interrupt number is: 0x3a00 >> 5 = 464, it's similar for other 7 interrupt numbers of DMA 3 channels. Signed-off-by: Shengzhou Liu Signed-off-by: Hongbo Zhang Signed-off-by: Scott Wood --- arch/powerpc/boot/dts/fsl/elo3-dma-2.dtsi | 82 +++++++++++++++++++++++++++++++ 1 file changed, 82 insertions(+) create mode 100644 arch/powerpc/boot/dts/fsl/elo3-dma-2.dtsi (limited to 'arch/powerpc') diff --git a/arch/powerpc/boot/dts/fsl/elo3-dma-2.dtsi b/arch/powerpc/boot/dts/fsl/elo3-dma-2.dtsi new file mode 100644 index 000000000000..d3cc8d0f7c25 --- /dev/null +++ b/arch/powerpc/boot/dts/fsl/elo3-dma-2.dtsi @@ -0,0 +1,82 @@ +/* + * QorIQ Elo3 DMA device tree stub [ controller @ offset 0x102300 ] + * + * Copyright 2013 Freescale Semiconductor Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of Freescale Semiconductor nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") as published by the Free Software + * Foundation, either version 2 of that License or (at your option) any + * later version. + * + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +dma2: dma@102300 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "fsl,elo3-dma"; + reg = <0x102300 0x4>, + <0x102600 0x4>; + ranges = <0x0 0x102100 0x500>; + dma-channel@0 { + compatible = "fsl,eloplus-dma-channel"; + reg = <0x0 0x80>; + interrupts = <464 2 0 0>; + }; + dma-channel@80 { + compatible = "fsl,eloplus-dma-channel"; + reg = <0x80 0x80>; + interrupts = <465 2 0 0>; + }; + dma-channel@100 { + compatible = "fsl,eloplus-dma-channel"; + reg = <0x100 0x80>; + interrupts = <466 2 0 0>; + }; + dma-channel@180 { + compatible = "fsl,eloplus-dma-channel"; + reg = <0x180 0x80>; + interrupts = <467 2 0 0>; + }; + dma-channel@300 { + compatible = "fsl,eloplus-dma-channel"; + reg = <0x300 0x80>; + interrupts = <468 2 0 0>; + }; + dma-channel@380 { + compatible = "fsl,eloplus-dma-channel"; + reg = <0x380 0x80>; + interrupts = <469 2 0 0>; + }; + dma-channel@400 { + compatible = "fsl,eloplus-dma-channel"; + reg = <0x400 0x80>; + interrupts = <470 2 0 0>; + }; + dma-channel@480 { + compatible = "fsl,eloplus-dma-channel"; + reg = <0x480 0x80>; + interrupts = <471 2 0 0>; + }; +}; -- cgit v1.2.3 From d064f30e5063ec54ab50af08c64fb5055e759bfd Mon Sep 17 00:00:00 2001 From: Shengzhou Liu Date: Wed, 25 Dec 2013 18:06:56 +0800 Subject: powerpc/fsl_pci: add versionless pci compatible There are much pci compatible with version on existing platforms. To stop putting version numbers in device tree later, we add a generic compatible 'fsl,qoriq-pcie'. The version number is readable directly from a register. Signed-off-by: Shengzhou Liu Signed-off-by: Scott Wood --- arch/powerpc/sysdev/fsl_pci.c | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/powerpc') diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c index e8be4344742b..a625dcf26b2b 100644 --- a/arch/powerpc/sysdev/fsl_pci.c +++ b/arch/powerpc/sysdev/fsl_pci.c @@ -1035,6 +1035,7 @@ static const struct of_device_id pci_ids[] = { { .compatible = "fsl,mpc8548-pcie", }, { .compatible = "fsl,mpc8610-pci", }, { .compatible = "fsl,mpc8641-pcie", }, + { .compatible = "fsl,qoriq-pcie", }, { .compatible = "fsl,qoriq-pcie-v2.1", }, { .compatible = "fsl,qoriq-pcie-v2.2", }, { .compatible = "fsl,qoriq-pcie-v2.3", }, -- cgit v1.2.3