sleep.S (2c74a0cefa463a7a483b07ba4d2ea8e4ec7b996c) sleep.S (29cb3cd208dd0e4471bb80bec4facc49ceb199fa)
1#include <linux/linkage.h>
2#include <linux/threads.h>
3#include <asm/asm-offsets.h>
4#include <asm/assembler.h>
5#include <asm/glue-cache.h>
6#include <asm/glue-proc.h>
7#include <asm/system.h>
8 .text
9
10/*
11 * Save CPU state for a suspend
12 * r1 = v:p offset
13 * r2 = suspend function arg0
14 * r3 = suspend function
1#include <linux/linkage.h>
2#include <linux/threads.h>
3#include <asm/asm-offsets.h>
4#include <asm/assembler.h>
5#include <asm/glue-cache.h>
6#include <asm/glue-proc.h>
7#include <asm/system.h>
8 .text
9
10/*
11 * Save CPU state for a suspend
12 * r1 = v:p offset
13 * r2 = suspend function arg0
14 * r3 = suspend function
15 * Note: does not return until system resumes
16 */
17ENTRY(__cpu_suspend)
18 stmfd sp!, {r4 - r11, lr}
19#ifdef MULTI_CPU
20 ldr r10, =processor
21 ldr r5, [r10, #CPU_SLEEP_SIZE] @ size of CPU sleep state
22 ldr ip, [r10, #CPU_DO_RESUME] @ virtual resume function
23#else
24 ldr r5, =cpu_suspend_size
25 ldr ip, =cpu_do_resume
26#endif
27 mov r6, sp @ current virtual SP
28 sub sp, sp, r5 @ allocate CPU state on stack
15 */
16ENTRY(__cpu_suspend)
17 stmfd sp!, {r4 - r11, lr}
18#ifdef MULTI_CPU
19 ldr r10, =processor
20 ldr r5, [r10, #CPU_SLEEP_SIZE] @ size of CPU sleep state
21 ldr ip, [r10, #CPU_DO_RESUME] @ virtual resume function
22#else
23 ldr r5, =cpu_suspend_size
24 ldr ip, =cpu_do_resume
25#endif
26 mov r6, sp @ current virtual SP
27 sub sp, sp, r5 @ allocate CPU state on stack
29 mov r0, sp @ save pointer
28 mov r0, sp @ save pointer to CPU save block
30 add ip, ip, r1 @ convert resume fn to phys
31 stmfd sp!, {r1, r6, ip} @ save v:p, virt SP, phys resume fn
32 ldr r5, =sleep_save_sp
33 add r6, sp, r1 @ convert SP to phys
34 stmfd sp!, {r2, r3} @ save suspend func arg and pointer
35#ifdef CONFIG_SMP
36 ALT_SMP(mrc p15, 0, lr, c0, c0, 5)
37 ALT_UP(mov lr, #0)

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50 @ flush data cache
51#ifdef MULTI_CACHE
52 ldr r10, =cpu_cache
53 mov lr, pc
54 ldr pc, [r10, #CACHE_FLUSH_KERN_ALL]
55#else
56 bl __cpuc_flush_kern_all
57#endif
29 add ip, ip, r1 @ convert resume fn to phys
30 stmfd sp!, {r1, r6, ip} @ save v:p, virt SP, phys resume fn
31 ldr r5, =sleep_save_sp
32 add r6, sp, r1 @ convert SP to phys
33 stmfd sp!, {r2, r3} @ save suspend func arg and pointer
34#ifdef CONFIG_SMP
35 ALT_SMP(mrc p15, 0, lr, c0, c0, 5)
36 ALT_UP(mov lr, #0)

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49 @ flush data cache
50#ifdef MULTI_CACHE
51 ldr r10, =cpu_cache
52 mov lr, pc
53 ldr pc, [r10, #CACHE_FLUSH_KERN_ALL]
54#else
55 bl __cpuc_flush_kern_all
56#endif
57 adr lr, BSYM(cpu_suspend_abort)
58 ldmfd sp!, {r0, pc} @ call suspend fn
59ENDPROC(__cpu_suspend)
60 .ltorg
61
58 ldmfd sp!, {r0, pc} @ call suspend fn
59ENDPROC(__cpu_suspend)
60 .ltorg
61
62cpu_suspend_abort:
63 ldmia sp!, {r1 - r3} @ pop v:p, virt SP, phys resume fn
64 mov sp, r2
65 ldmfd sp!, {r4 - r11, pc}
66ENDPROC(cpu_suspend_abort)
67
62/*
63 * r0 = control register value
64 * r1 = v:p offset (preserved by cpu_do_resume)
65 * r2 = phys page table base
66 * r3 = L1 section flags
67 */
68ENTRY(cpu_resume_mmu)
69 adr r4, cpu_resume_turn_mmu_on

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84 mov r1, r1
85 mov r1, r1
86 mov pc, r3 @ jump to virtual address
87ENDPROC(cpu_resume_turn_mmu_on)
88cpu_resume_after_mmu:
89 str r5, [r2, r4, lsl #2] @ restore old mapping
90 mcr p15, 0, r0, c1, c0, 0 @ turn on D-cache
91 bl cpu_init @ restore the und/abt/irq banked regs
68/*
69 * r0 = control register value
70 * r1 = v:p offset (preserved by cpu_do_resume)
71 * r2 = phys page table base
72 * r3 = L1 section flags
73 */
74ENTRY(cpu_resume_mmu)
75 adr r4, cpu_resume_turn_mmu_on

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90 mov r1, r1
91 mov r1, r1
92 mov pc, r3 @ jump to virtual address
93ENDPROC(cpu_resume_turn_mmu_on)
94cpu_resume_after_mmu:
95 str r5, [r2, r4, lsl #2] @ restore old mapping
96 mcr p15, 0, r0, c1, c0, 0 @ turn on D-cache
97 bl cpu_init @ restore the und/abt/irq banked regs
98 mov r0, #0 @ return zero on success
92 ldmfd sp!, {r4 - r11, pc}
93ENDPROC(cpu_resume_after_mmu)
94
95/*
96 * Note: Yes, part of the following code is located into the .data section.
97 * This is to allow sleep_save_sp to be accessed with a relative load
98 * while we can't rely on any MMU translation. We could have put
99 * sleep_save_sp in the .text section as well, but some setups might

--- 26 unchanged lines hidden --- 		99 ldmfd sp!, {r4 - r11, pc}
100ENDPROC(cpu_resume_after_mmu)
101
102/*
103 * Note: Yes, part of the following code is located into the .data section.
104 * This is to allow sleep_save_sp to be accessed with a relative load
105 * while we can't rely on any MMU translation. We could have put
106 * sleep_save_sp in the .text section as well, but some setups might

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