diff options
Diffstat (limited to 'arch/arm/mach-sa1100/sleep.S')
-rw-r--r-- | arch/arm/mach-sa1100/sleep.S | 72 |
1 files changed, 4 insertions, 68 deletions
diff --git a/arch/arm/mach-sa1100/sleep.S b/arch/arm/mach-sa1100/sleep.S index 80f31bad707c..04f2a618d4ef 100644 --- a/arch/arm/mach-sa1100/sleep.S +++ b/arch/arm/mach-sa1100/sleep.S @@ -20,12 +20,7 @@ #include <asm/assembler.h> #include <mach/hardware.h> - - .text - - - /* * sa1100_cpu_suspend() * @@ -34,27 +29,10 @@ */ ENTRY(sa1100_cpu_suspend) - stmfd sp!, {r4 - r12, lr} @ save registers on stack - - @ get coprocessor registers - mrc p15, 0, r4, c3, c0, 0 @ domain ID - mrc p15, 0, r5, c2, c0, 0 @ translation table base addr - mrc p15, 0, r6, c13, c0, 0 @ PID - mrc p15, 0, r7, c1, c0, 0 @ control reg - - @ store them plus current virtual stack ptr on stack - mov r8, sp - stmfd sp!, {r4 - r8} - - @ preserve phys address of stack - mov r0, sp - bl sleep_phys_sp - ldr r1, =sleep_save_sp - str r0, [r1] - - @ clean data cache and invalidate WB - bl v4wb_flush_kern_cache_all + mov r1, r0 + ldr r3, =sa1100_cpu_resume @ return function + bl cpu_suspend @ disable clock switching mcr p15, 0, r1, c15, c2, 2 @@ -166,50 +144,8 @@ sa1110_sdram_controller_fix: * cpu_sa1100_resume() * * entry point from bootloader into kernel during resume - * - * Note: Yes, part of the following code is located into the .data section. - * This is to allow sleep_save_sp to be accessed with a relative load - * while we can't rely on any MMU translation. We could have put - * sleep_save_sp in the .text section as well, but some setups might - * insist on it to be truly read-only. */ - - .data - .align 5 -ENTRY(sa1100_cpu_resume) - mov r0, #PSR_F_BIT | PSR_I_BIT | SVC_MODE - msr cpsr_c, r0 @ set SVC, irqs off - - ldr r0, sleep_save_sp @ stack phys addr - ldr r2, =resume_after_mmu @ its absolute virtual address - ldmfd r0, {r4 - r7, sp} @ CP regs + virt stack ptr - - mov r1, #0 - mcr p15, 0, r1, c8, c7, 0 @ flush I+D TLBs - mcr p15, 0, r1, c7, c7, 0 @ flush I&D cache - mcr p15, 0, r1, c9, c0, 0 @ invalidate RB - mcr p15, 0, r1, c9, c0, 5 @ allow user space to use RB - - mcr p15, 0, r4, c3, c0, 0 @ domain ID - mcr p15, 0, r5, c2, c0, 0 @ translation table base addr - mcr p15, 0, r6, c13, c0, 0 @ PID - b resume_turn_on_mmu @ cache align execution - .align 5 -resume_turn_on_mmu: - mcr p15, 0, r7, c1, c0, 0 @ turn on MMU, caches, etc. - nop - mov pc, r2 @ jump to virtual addr - nop - nop - nop - -sleep_save_sp: - .word 0 @ preserve stack phys ptr here - - .text -resume_after_mmu: +sa1100_cpu_resume: mcr p15, 0, r1, c15, c1, 2 @ enable clock switching ldmfd sp!, {r4 - r12, pc} @ return to caller - - |