diff options
Diffstat (limited to 'arch/arm/mm/proc-v6.S')
| -rw-r--r-- | arch/arm/mm/proc-v6.S | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/arch/arm/mm/proc-v6.S b/arch/arm/mm/proc-v6.S index 59a7e1ffe7b..832b6bdc192 100644 --- a/arch/arm/mm/proc-v6.S +++ b/arch/arm/mm/proc-v6.S @@ -121,6 +121,53 @@ ENTRY(cpu_v6_set_pte_ext) #endif mov pc, lr +/* Suspend/resume support: taken from arch/arm/mach-s3c64xx/sleep.S */ +.globl cpu_v6_suspend_size +.equ cpu_v6_suspend_size, 4 * 8 +#ifdef CONFIG_PM +ENTRY(cpu_v6_do_suspend) + stmfd sp!, {r4 - r11, lr} + mrc p15, 0, r4, c13, c0, 0 @ FCSE/PID + mrc p15, 0, r5, c13, c0, 1 @ Context ID + mrc p15, 0, r6, c3, c0, 0 @ Domain ID + mrc p15, 0, r7, c2, c0, 0 @ Translation table base 0 + mrc p15, 0, r8, c2, c0, 1 @ Translation table base 1 + mrc p15, 0, r9, c1, c0, 1 @ auxillary control register + mrc p15, 0, r10, c1, c0, 2 @ co-processor access control + mrc p15, 0, r11, c1, c0, 0 @ control register + stmia r0, {r4 - r11} + ldmfd sp!, {r4- r11, pc} +ENDPROC(cpu_v6_do_suspend) + +ENTRY(cpu_v6_do_resume) + mov ip, #0 + mcr p15, 0, ip, c7, c14, 0 @ clean+invalidate D cache + mcr p15, 0, ip, c7, c5, 0 @ invalidate I cache + mcr p15, 0, ip, c7, c15, 0 @ clean+invalidate cache + mcr p15, 0, ip, c7, c10, 4 @ drain write buffer + ldmia r0, {r4 - r11} + mcr p15, 0, r4, c13, c0, 0 @ FCSE/PID + mcr p15, 0, r5, c13, c0, 1 @ Context ID + mcr p15, 0, r6, c3, c0, 0 @ Domain ID + mcr p15, 0, r7, c2, c0, 0 @ Translation table base 0 + mcr p15, 0, r8, c2, c0, 1 @ Translation table base 1 + mcr p15, 0, r9, c1, c0, 1 @ auxillary control register + mcr p15, 0, r10, c1, c0, 2 @ co-processor access control + mcr p15, 0, ip, c2, c0, 2 @ TTB control register + mcr p15, 0, ip, c7, c5, 4 @ ISB + mov r0, r11 @ control register + mov r2, r7, lsr #14 @ get TTB0 base + mov r2, r2, lsl #14 + ldr r3, cpu_resume_l1_flags + b cpu_resume_mmu +ENDPROC(cpu_v6_do_resume) +cpu_resume_l1_flags: + ALT_SMP(.long PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_FLAGS_SMP) + ALT_UP(.long PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_FLAGS_UP) +#else +#define cpu_v6_do_suspend 0 +#define cpu_v6_do_resume 0 +#endif .type cpu_v6_name, #object @@ -206,6 +253,9 @@ ENTRY(v6_processor_functions) .word cpu_v6_dcache_clean_area .word cpu_v6_switch_mm .word cpu_v6_set_pte_ext + .word cpu_v6_suspend_size + .word cpu_v6_do_suspend + .word cpu_v6_do_resume .size v6_processor_functions, . - v6_processor_functions .section ".rodata" |