diff options
Diffstat (limited to 'arch/arm/plat-s3c24xx/sleep.S')
-rw-r--r-- | arch/arm/plat-s3c24xx/sleep.S | 25 |
1 files changed, 9 insertions, 16 deletions
diff --git a/arch/arm/plat-s3c24xx/sleep.S b/arch/arm/plat-s3c24xx/sleep.S index ecb830be67d6..e73e3b6e88d2 100644 --- a/arch/arm/plat-s3c24xx/sleep.S +++ b/arch/arm/plat-s3c24xx/sleep.S | |||
@@ -43,20 +43,8 @@ | |||
43 | 43 | ||
44 | /* s3c_cpu_save | 44 | /* s3c_cpu_save |
45 | * | 45 | * |
46 | * save enough of the CPU state to allow us to re-start | ||
47 | * pm.c code. as we store items like the sp/lr, we will | ||
48 | * end up returning from this function when the cpu resumes | ||
49 | * so the return value is set to mark this. | ||
50 | * | ||
51 | * This arangement means we avoid having to flush the cache | ||
52 | * from this code. | ||
53 | * | ||
54 | * entry: | 46 | * entry: |
55 | * r0 = pointer to save block | 47 | * r0 = save address (virtual addr of s3c_sleep_save_phys) |
56 | * | ||
57 | * exit: | ||
58 | * r0 = 0 => we stored everything | ||
59 | * 1 => resumed from sleep | ||
60 | */ | 48 | */ |
61 | 49 | ||
62 | ENTRY(s3c_cpu_save) | 50 | ENTRY(s3c_cpu_save) |
@@ -71,14 +59,19 @@ ENTRY(s3c_cpu_save) | |||
71 | 59 | ||
72 | stmia r0, { r4 - r13 } | 60 | stmia r0, { r4 - r13 } |
73 | 61 | ||
74 | mov r0, #0 | 62 | @@ write our state back to RAM |
75 | ldmfd sp, { r4 - r12, pc } | 63 | bl s3c_pm_cb_flushcache |
76 | 64 | ||
65 | @@ jump to final code to send system to sleep | ||
66 | ldr r0, =pm_cpu_sleep | ||
67 | @@ldr pc, [ r0 ] | ||
68 | ldr r0, [ r0 ] | ||
69 | mov pc, r0 | ||
70 | |||
77 | @@ return to the caller, after having the MMU | 71 | @@ return to the caller, after having the MMU |
78 | @@ turned on, this restores the last bits from the | 72 | @@ turned on, this restores the last bits from the |
79 | @@ stack | 73 | @@ stack |
80 | resume_with_mmu: | 74 | resume_with_mmu: |
81 | mov r0, #1 | ||
82 | ldmfd sp!, { r4 - r12, pc } | 75 | ldmfd sp!, { r4 - r12, pc } |
83 | 76 | ||
84 | .ltorg | 77 | .ltorg |