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authorLinus Torvalds <torvalds@linux-foundation.org>2010-08-08 10:08:26 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-08 10:08:26 -0700
commit53bcef60633086ad73683d01a4ef9ca678484d2d (patch)
tree8b14cc031124d0aa0da6cd3b60115bc7eaa80061 /arch/cris/arch-v32/mm
parent4fd6c6bf83cb16321e9902b00e2af79054f4e0d6 (diff)
parent85d9865721c62a551547984e6cc8bd3ba732e294 (diff)
downloadlinux-53bcef60633086ad73683d01a4ef9ca678484d2d.tar.bz2
Merge branch 'for-linus' of git://www.jni.nu/cris
* 'for-linus' of git://www.jni.nu/cris: (51 commits) CRIS: Fix alignment problem for older ld CRIS: Always dump registers for segfaulting process. CRIS: Add config for pausing a seg-faulting process CRIS: Don't take faults while in_atomic CRIS: Fixup lookup for delay slot faults CRIS: Discard exit.text and .data at runtime CRIS: Add cache aligned and read mostly data sections CRIS: Return something from profile write CRIS: Add ARTPEC-3 and timestamps for sync-serial CRIS: Better ARTPEC-3 support for gpio CRIS: Add include guard CRIS: Better handling of pinmux settings CRIS: New DMA defines for ARTPEC-3 CRIS: __do_strncpy_from_user: Don't read the byte beyond the nil CRIS: Pagetable for ARTPEC-3 CRIS: Machine dependent memmap.h CRIS: Check if pointer is set before using it CRIS: Machine dependent dma.h CRIS: Define __read_mostly for CRISv32 CRIS: Discard .note.gnu.build-id section ...
Diffstat (limited to 'arch/cris/arch-v32/mm')
-rw-r--r--arch/cris/arch-v32/mm/init.c23
-rw-r--r--arch/cris/arch-v32/mm/mmu.S4
2 files changed, 22 insertions, 5 deletions
diff --git a/arch/cris/arch-v32/mm/init.c b/arch/cris/arch-v32/mm/init.c
index caeb921a92ea..0768bc409ca8 100644
--- a/arch/cris/arch-v32/mm/init.c
+++ b/arch/cris/arch-v32/mm/init.c
@@ -27,8 +27,7 @@ extern void tlb_init(void);
* at kseg_4 thus the ksegs are set up again. Also clear the TLB and do various
* other paging stuff.
*/
-void __init
-cris_mmu_init(void)
+void __init cris_mmu_init(void)
{
unsigned long mmu_config;
unsigned long mmu_kbase_hi;
@@ -55,14 +54,23 @@ cris_mmu_init(void)
/* Initialise the TLB. Function found in tlb.c. */
tlb_init();
- /* Enable exceptions and initialize the kernel segments. */
+ /*
+ * Enable exceptions and initialize the kernel segments.
+ * See head.S for differences between ARTPEC-3 and ETRAX FS.
+ */
mmu_config = ( REG_STATE(mmu, rw_mm_cfg, we, on) |
REG_STATE(mmu, rw_mm_cfg, acc, on) |
REG_STATE(mmu, rw_mm_cfg, ex, on) |
REG_STATE(mmu, rw_mm_cfg, inv, on) |
+#ifdef CONFIG_CRIS_MACH_ARTPEC3
+ REG_STATE(mmu, rw_mm_cfg, seg_f, page) |
+ REG_STATE(mmu, rw_mm_cfg, seg_e, page) |
+ REG_STATE(mmu, rw_mm_cfg, seg_d, linear) |
+#else
REG_STATE(mmu, rw_mm_cfg, seg_f, linear) |
REG_STATE(mmu, rw_mm_cfg, seg_e, linear) |
REG_STATE(mmu, rw_mm_cfg, seg_d, page) |
+#endif
REG_STATE(mmu, rw_mm_cfg, seg_c, linear) |
REG_STATE(mmu, rw_mm_cfg, seg_b, linear) |
#ifndef CONFIG_ETRAX_VCS_SIM
@@ -81,9 +89,15 @@ cris_mmu_init(void)
REG_STATE(mmu, rw_mm_cfg, seg_1, page) |
REG_STATE(mmu, rw_mm_cfg, seg_0, page));
+ /* See head.S for differences between ARTPEC-3 and ETRAX FS. */
mmu_kbase_hi = ( REG_FIELD(mmu, rw_mm_kbase_hi, base_f, 0x0) |
+#ifdef CONFIG_CRIS_MACH_ARTPEC3
+ REG_FIELD(mmu, rw_mm_kbase_hi, base_e, 0x0) |
+ REG_FIELD(mmu, rw_mm_kbase_hi, base_d, 0x5) |
+#else
REG_FIELD(mmu, rw_mm_kbase_hi, base_e, 0x8) |
REG_FIELD(mmu, rw_mm_kbase_hi, base_d, 0x0) |
+#endif
REG_FIELD(mmu, rw_mm_kbase_hi, base_c, 0x4) |
REG_FIELD(mmu, rw_mm_kbase_hi, base_b, 0xb) |
#ifndef CONFIG_ETRAX_VCS_SIM
@@ -129,8 +143,7 @@ cris_mmu_init(void)
SUPP_REG_WR(RW_GC_CFG, 0xf); /* IMMU, DMMU, ICache, DCache on */
}
-void __init
-paging_init(void)
+void __init paging_init(void)
{
int i;
unsigned long zones_size[MAX_NR_ZONES];
diff --git a/arch/cris/arch-v32/mm/mmu.S b/arch/cris/arch-v32/mm/mmu.S
index f125d912e140..72727c1d8e60 100644
--- a/arch/cris/arch-v32/mm/mmu.S
+++ b/arch/cris/arch-v32/mm/mmu.S
@@ -38,6 +38,7 @@
; to handle the fault.
.macro MMU_BUS_FAULT_HANDLER handler, mmu, we, ex
.globl \handler
+ .type \handler,"function"
\handler:
SAVE_ALL
move \mmu, $srs ; Select MMU support register bank
@@ -52,6 +53,7 @@
nop
ba ret_from_intr
nop
+ .size \handler, . - \handler
.endm
; Refill handler. Three cases may occur:
@@ -84,6 +86,7 @@
2: .dword 0 ; last_refill_cause
.text
.globl \handler
+ .type \handler, "function"
\handler:
subq 4, $sp
; (The pipeline stalls for one cycle; $sp used as address in the next cycle.)
@@ -196,6 +199,7 @@
; Return
ba ret_from_intr
nop
+ .size \handler, . - \handler
.endm
; This is the MMU bus fault handlers.