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ARM: pm: convert samsung platforms to generic suspend/resume support

Bladeren bron 
Tested-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King
2011-02-06 17:39:31 +00:00
bovenliggende 96c20015da
commit 2e2f3d3792
5 gewijzigde bestanden met toevoegingen van 14 en 239 verwijderingen
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105
arch/arm/mach-s5pv210/sleep.S
Bestand weergeven

@@ -35,50 +35,24 @@
/* s3c_cpu_save
*
* entry:
* r0 = save address (virtual addr of s3c_sleep_save_phys)
* r1 = v:p offset
*/
ENTRY(s3c_cpu_save)
stmfd sp!, { r3 - r12, lr }
mrc p15, 0, r4, c13, c0, 0 @ FCSE/PID
mrc p15, 0, r5, c3, c0, 0 @ Domain ID
mrc p15, 0, r6, c2, c0, 0 @ Translation Table BASE0
mrc p15, 0, r7, c2, c0, 1 @ Translation Table BASE1
mrc p15, 0, r8, c2, c0, 2 @ Translation Table Control
mrc p15, 0, r9, c1, c0, 0 @ Control register
mrc p15, 0, r10, c1, c0, 1 @ Auxiliary control register
mrc p15, 0, r11, c1, c0, 2 @ Co-processor access controls
mrc p15, 0, r12, c10, c2, 0 @ Read PRRR
mrc p15, 0, r3, c10, c2, 1 @ READ NMRR
stmia r0, { r3 - r13 }
bl s3c_pm_cb_flushcache
ldr r3, =resume_with_mmu
bl cpu_suspend
ldr r0, =pm_cpu_sleep
ldr r0, [ r0 ]
mov pc, r0
resume_with_mmu:
/*
* After MMU is turned on, restore the previous MMU table.
*/
ldr r9 , =(PAGE_OFFSET - PHYS_OFFSET)
add r4, r4, r9
str r12, [r4]
ldmfd sp!, { r3 - r12, pc }
.ltorg
.data
.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
* s3c_cpu_resume entry.
@@ -96,75 +70,4 @@ s3c_sleep_save_phys:
*/
ENTRY(s3c_cpu_resume)
mov r0, #PSR_I_BIT | PSR_F_BIT | SVC_MODE
msr cpsr_c, r0
mov r1, #0
mcr p15, 0, r1, c8, c7, 0 @ invalidate TLBs
mcr p15, 0, r1, c7, c5, 0 @ invalidate I Cache
ldr r0, s3c_sleep_save_phys @ address of restore block
ldmia r0, { r3 - r13 }
mcr p15, 0, r4, c13, c0, 0 @ FCSE/PID
mcr p15, 0, r5, c3, c0, 0 @ Domain ID
mcr p15, 0, r8, c2, c0, 2 @ Translation Table Control
mcr p15, 0, r7, c2, c0, 1 @ Translation Table BASE1
mcr p15, 0, r6, c2, c0, 0 @ Translation Table BASE0
mcr p15, 0, r10, c1, c0, 1 @ Auxiliary control register
mov r0, #0
mcr p15, 0, r0, c8, c7, 0 @ Invalidate I & D TLB
mov r0, #0 @ restore copro access
mcr p15, 0, r11, c1, c0, 2 @ Co-processor access
mcr p15, 0, r0, c7, c5, 4
mcr p15, 0, r12, c10, c2, 0 @ write PRRR
mcr p15, 0, r3, c10, c2, 1 @ write NMRR
/*
* In Cortex-A8, when MMU is turned on, the pipeline is flushed.
* And there are no valid entries in the MMU table at this point.
* So before turning on the MMU, the MMU entry for the DRAM address
* range is added. After the MMU is turned on, the other entries
* in the MMU table will be restored.
*/
/* r6 = Translation Table BASE0 */
mov r4, r6
mov r4, r4, LSR #14
mov r4, r4, LSL #14
/* Load address for adding to MMU table list */
ldr r11, =0xE010F000 @ INFORM0 reg.
ldr r10, [r11, #0]
mov r10, r10, LSR #18
bic r10, r10, #0x3
orr r4, r4, r10
/* Calculate MMU table entry */
mov r10, r10, LSL #18
ldr r5, =0x40E
orr r10, r10, r5
/* Back up originally data */
ldr r12, [r4]
/* Add calculated MMU table entry into MMU table list */
str r10, [r4]
ldr r2, =resume_with_mmu
mcr p15, 0, r9, c1, c0, 0 @ turn on MMU, etc
nop
nop
nop
nop
nop @ second-to-last before mmu
mov pc, r2 @ go back to virtual address
.ltorg
b cpu_resume