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Diffstat (limited to 'arch/arm/plat-s3c24xx/sleep.S')
-rw-r--r--arch/arm/plat-s3c24xx/sleep.S43
1 files changed, 18 insertions, 25 deletions
diff --git a/arch/arm/plat-s3c24xx/sleep.S b/arch/arm/plat-s3c24xx/sleep.S
index 76594b21280..e73e3b6e88d 100644
--- a/arch/arm/plat-s3c24xx/sleep.S
+++ b/arch/arm/plat-s3c24xx/sleep.S
@@ -41,25 +41,13 @@
.text
- /* s3c2410_cpu_save
- *
- * save enough of the CPU state to allow us to re-start
- * pm.c code. as we store items like the sp/lr, we will
- * end up returning from this function when the cpu resumes
- * so the return value is set to mark this.
- *
- * This arangement means we avoid having to flush the cache
- * from this code.
+ /* s3c_cpu_save
*
* entry:
- * r0 = pointer to save block
- *
- * exit:
- * r0 = 0 => we stored everything
- * 1 => resumed from sleep
+ * r0 = save address (virtual addr of s3c_sleep_save_phys)
*/
-ENTRY(s3c2410_cpu_save)
+ENTRY(s3c_cpu_save)
stmfd sp!, { r4 - r12, lr }
@@ store co-processor registers
@@ -71,20 +59,25 @@ ENTRY(s3c2410_cpu_save)
stmia r0, { r4 - r13 }
- mov r0, #0
- ldmfd sp, { r4 - r12, pc }
+ @@ write our state back to RAM
+ bl s3c_pm_cb_flushcache
+ @@ jump to final code to send system to sleep
+ ldr r0, =pm_cpu_sleep
+ @@ldr pc, [ r0 ]
+ ldr r0, [ r0 ]
+ mov pc, r0
+
@@ return to the caller, after having the MMU
@@ turned on, this restores the last bits from the
@@ stack
resume_with_mmu:
- mov r0, #1
ldmfd sp!, { r4 - r12, pc }
.ltorg
@@ the next bits sit in the .data segment, even though they
- @@ happen to be code... the s3c2410_sleep_save_phys needs to be
+ @@ happen to be code... the s3c_sleep_save_phys needs to be
@@ accessed by the resume code before it can restore the MMU.
@@ This means that the variable has to be close enough for the
@@ code to read it... since the .text segment needs to be RO,
@@ -92,19 +85,19 @@ resume_with_mmu:
.data
- .global s3c2410_sleep_save_phys
-s3c2410_sleep_save_phys:
+ .global s3c_sleep_save_phys
+s3c_sleep_save_phys:
.word 0
/* sleep magic, to allow the bootloader to check for an valid
* image to resume to. Must be the first word before the
- * s3c2410_cpu_resume entry.
+ * s3c_cpu_resume entry.
*/
.word 0x2bedf00d
- /* s3c2410_cpu_resume
+ /* s3c_cpu_resume
*
* resume code entry for bootloader to call
*
@@ -113,7 +106,7 @@ s3c2410_sleep_save_phys:
* must not write to the code segment (code is read-only)
*/
-ENTRY(s3c2410_cpu_resume)
+ENTRY(s3c_cpu_resume)
mov r0, #PSR_I_BIT | PSR_F_BIT | SVC_MODE
msr cpsr_c, r0
@@ -145,7 +138,7 @@ ENTRY(s3c2410_cpu_resume)
mcr p15, 0, r1, c8, c7, 0 @@ invalidate I & D TLBs
mcr p15, 0, r1, c7, c7, 0 @@ invalidate I & D caches
- ldr r0, s3c2410_sleep_save_phys @ address of restore block
+ ldr r0, s3c_sleep_save_phys @ address of restore block
ldmia r0, { r4 - r13 }
mcr p15, 0, r4, c13, c0, 0 @ PID