diff options
Diffstat (limited to 'arch/arm/plat-omap/sleep.S')
| -rw-r--r-- | arch/arm/plat-omap/sleep.S | 83 |
1 files changed, 46 insertions, 37 deletions
diff --git a/arch/arm/plat-omap/sleep.S b/arch/arm/plat-omap/sleep.S index 279490ce772b..9f745836f6aa 100644 --- a/arch/arm/plat-omap/sleep.S +++ b/arch/arm/plat-omap/sleep.S @@ -66,7 +66,7 @@ ENTRY(omap1510_idle_loop_suspend) @ get ARM_IDLECT2 into r2 ldrh r2, [r4, #ARM_IDLECT2_ASM_OFFSET & 0xff] mov r5, #OMAP1510_IDLE_CLOCK_DOMAINS & 0xff - orr r5,r5, #OMAP1510_IDLE_CLOCK_DOMAINS & 0xff00 + orr r5, r5, #OMAP1510_IDLE_CLOCK_DOMAINS & 0xff00 strh r5, [r4, #ARM_IDLECT2_ASM_OFFSET & 0xff] @ request ARM idle @@ -76,7 +76,7 @@ ENTRY(omap1510_idle_loop_suspend) strh r3, [r4, #ARM_IDLECT1_ASM_OFFSET & 0xff] mov r5, #IDLE_WAIT_CYCLES & 0xff - orr r5, r5, #IDLE_WAIT_CYCLES & 0xff00 + orr r5, r5, #IDLE_WAIT_CYCLES & 0xff00 l_1510: subs r5, r5, #1 bne l_1510 /* @@ -96,7 +96,7 @@ l_1510: subs r5, r5, #1 strh r2, [r4, #ARM_IDLECT2_ASM_OFFSET & 0xff] strh r1, [r4, #ARM_IDLECT1_ASM_OFFSET & 0xff] - ldmfd sp!, {r0 - r12, pc} @ restore regs and return + ldmfd sp!, {r0 - r12, pc} @ restore regs and return ENTRY(omap1510_idle_loop_suspend_sz) .word . - omap1510_idle_loop_suspend @@ -115,8 +115,8 @@ ENTRY(omap1610_idle_loop_suspend) @ turn off clock domains @ get ARM_IDLECT2 into r2 ldrh r2, [r4, #ARM_IDLECT2_ASM_OFFSET & 0xff] - mov r5, #OMAP1610_IDLE_CLOCK_DOMAINS & 0xff - orr r5,r5, #OMAP1610_IDLE_CLOCK_DOMAINS & 0xff00 + mov r5, #OMAP1610_IDLECT2_SLEEP_VAL & 0xff + orr r5, r5, #OMAP1610_IDLECT2_SLEEP_VAL & 0xff00 strh r5, [r4, #ARM_IDLECT2_ASM_OFFSET & 0xff] @ request ARM idle @@ -126,7 +126,7 @@ ENTRY(omap1610_idle_loop_suspend) strh r3, [r4, #ARM_IDLECT1_ASM_OFFSET & 0xff] mov r5, #IDLE_WAIT_CYCLES & 0xff - orr r5, r5, #IDLE_WAIT_CYCLES & 0xff00 + orr r5, r5, #IDLE_WAIT_CYCLES & 0xff00 l_1610: subs r5, r5, #1 bne l_1610 /* @@ -146,7 +146,7 @@ l_1610: subs r5, r5, #1 strh r2, [r4, #ARM_IDLECT2_ASM_OFFSET & 0xff] strh r1, [r4, #ARM_IDLECT1_ASM_OFFSET & 0xff] - ldmfd sp!, {r0 - r12, pc} @ restore regs and return + ldmfd sp!, {r0 - r12, pc} @ restore regs and return ENTRY(omap1610_idle_loop_suspend_sz) .word . - omap1610_idle_loop_suspend @@ -208,7 +208,7 @@ ENTRY(omap1510_cpu_suspend) @ turn off clock domains mov r5, #OMAP1510_IDLE_CLOCK_DOMAINS & 0xff - orr r5,r5, #OMAP1510_IDLE_CLOCK_DOMAINS & 0xff00 + orr r5, r5, #OMAP1510_IDLE_CLOCK_DOMAINS & 0xff00 strh r5, [r4, #ARM_IDLECT2_ASM_OFFSET & 0xff] @ request ARM idle @@ -217,7 +217,7 @@ ENTRY(omap1510_cpu_suspend) strh r3, [r4, #ARM_IDLECT1_ASM_OFFSET & 0xff] mov r5, #IDLE_WAIT_CYCLES & 0xff - orr r5, r5, #IDLE_WAIT_CYCLES & 0xff00 + orr r5, r5, #IDLE_WAIT_CYCLES & 0xff00 l_1510_2: subs r5, r5, #1 bne l_1510_2 @@ -237,7 +237,7 @@ l_1510_2: strh r0, [r4, #ARM_IDLECT1_ASM_OFFSET & 0xff] @ restore regs and return - ldmfd sp!, {r0 - r12, pc} + ldmfd sp!, {r0 - r12, pc} ENTRY(omap1510_cpu_suspend_sz) .word . - omap1510_cpu_suspend @@ -249,21 +249,26 @@ ENTRY(omap1610_cpu_suspend) @ save registers on stack stmfd sp!, {r0 - r12, lr} + @ Drain write cache + mov r4, #0 + mcr p15, 0, r0, c7, c10, 4 + nop + @ load base address of Traffic Controller - mov r4, #TCMIF_ASM_BASE & 0xff000000 - orr r4, r4, #TCMIF_ASM_BASE & 0x00ff0000 - orr r4, r4, #TCMIF_ASM_BASE & 0x0000ff00 + mov r6, #TCMIF_ASM_BASE & 0xff000000 + orr r6, r6, #TCMIF_ASM_BASE & 0x00ff0000 + orr r6, r6, #TCMIF_ASM_BASE & 0x0000ff00 @ prepare to put SDRAM into self-refresh manually - ldr r5, [r4, #EMIFF_SDRAM_CONFIG_ASM_OFFSET & 0xff] - orr r5, r5, #SELF_REFRESH_MODE & 0xff000000 - orr r5, r5, #SELF_REFRESH_MODE & 0x000000ff - str r5, [r4, #EMIFF_SDRAM_CONFIG_ASM_OFFSET & 0xff] + ldr r7, [r6, #EMIFF_SDRAM_CONFIG_ASM_OFFSET & 0xff] + orr r9, r7, #SELF_REFRESH_MODE & 0xff000000 + orr r9, r9, #SELF_REFRESH_MODE & 0x000000ff + str r9, [r6, #EMIFF_SDRAM_CONFIG_ASM_OFFSET & 0xff] @ prepare to put EMIFS to Sleep - ldr r5, [r4, #EMIFS_CONFIG_ASM_OFFSET & 0xff] - orr r5, r5, #IDLE_EMIFS_REQUEST & 0xff - str r5, [r4, #EMIFS_CONFIG_ASM_OFFSET & 0xff] + ldr r8, [r6, #EMIFS_CONFIG_ASM_OFFSET & 0xff] + orr r9, r8, #IDLE_EMIFS_REQUEST & 0xff + str r9, [r6, #EMIFS_CONFIG_ASM_OFFSET & 0xff] @ load base address of ARM_IDLECT1 and ARM_IDLECT2 mov r4, #CLKGEN_REG_ASM_BASE & 0xff000000 @@ -271,26 +276,22 @@ ENTRY(omap1610_cpu_suspend) orr r4, r4, #CLKGEN_REG_ASM_BASE & 0x0000ff00 @ turn off clock domains - mov r5, #OMAP1610_IDLE_CLOCK_DOMAINS & 0xff - orr r5,r5, #OMAP1610_IDLE_CLOCK_DOMAINS & 0xff00 - strh r5, [r4, #ARM_IDLECT2_ASM_OFFSET & 0xff] - - @ work around errata of OMAP1610/5912. Enable (!) peripheral - @ clock to let the chip go into deep sleep - ldrh r5, [r4, #ARM_IDLECT2_ASM_OFFSET & 0xff] - orr r5,r5, #EN_PERCK_BIT & 0xff + @ do not disable PERCK (0x04) + mov r5, #OMAP1610_IDLECT2_SLEEP_VAL & 0xff + orr r5, r5, #OMAP1610_IDLECT2_SLEEP_VAL & 0xff00 strh r5, [r4, #ARM_IDLECT2_ASM_OFFSET & 0xff] @ request ARM idle - mov r3, #OMAP1610_DEEP_SLEEP_REQUEST & 0xff - orr r3, r3, #OMAP1610_DEEP_SLEEP_REQUEST & 0xff00 + mov r3, #OMAP1610_IDLECT1_SLEEP_VAL & 0xff + orr r3, r3, #OMAP1610_IDLECT1_SLEEP_VAL & 0xff00 strh r3, [r4, #ARM_IDLECT1_ASM_OFFSET & 0xff] - mov r5, #IDLE_WAIT_CYCLES & 0xff - orr r5, r5, #IDLE_WAIT_CYCLES & 0xff00 -l_1610_2: - subs r5, r5, #1 - bne l_1610_2 + @ disable instruction cache + mrc p15, 0, r9, c1, c0, 0 + bic r2, r9, #0x1000 + mcr p15, 0, r2, c1, c0, 0 + nop + /* * Let's wait for the next wake up event to wake us up. r0 can't be * used here because r0 holds ARM_IDLECT1 @@ -301,13 +302,21 @@ l_1610_2: * omap1610_cpu_suspend()'s resume point. * * It will just start executing here, so we'll restore stuff from the - * stack, reset the ARM_IDLECT1 and ARM_IDLECT2. + * stack. */ + @ re-enable Icache + mcr p15, 0, r9, c1, c0, 0 + + @ reset the ARM_IDLECT1 and ARM_IDLECT2. strh r1, [r4, #ARM_IDLECT2_ASM_OFFSET & 0xff] strh r0, [r4, #ARM_IDLECT1_ASM_OFFSET & 0xff] + @ Restore EMIFF controls + str r7, [r6, #EMIFF_SDRAM_CONFIG_ASM_OFFSET & 0xff] + str r8, [r6, #EMIFS_CONFIG_ASM_OFFSET & 0xff] + @ restore regs and return - ldmfd sp!, {r0 - r12, pc} + ldmfd sp!, {r0 - r12, pc} ENTRY(omap1610_cpu_suspend_sz) .word . - omap1610_cpu_suspend |