diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-08-31 23:26:18 +0100 |
|---|---|---|
| committer | Simone Willett <swillett@nvidia.com> | 2012-04-05 17:52:26 -0700 |
| commit | 5682179d980e1a70bcf37fd97a14e27a2ddde822 (patch) | |
| tree | 83e5d3e6746573b1a50a2f478dffe31777324787 /arch/arm/kernel | |
| parent | 46d9f14943770c24603ef7cdfd8eb2dbcd3c1248 (diff) | |
ARM: pm: get rid of cpu_resume_turn_mmu_on
We don't require cpu_resume_turn_mmu_on as we can combine the ldr
instruction with the following code provided we ensure that
cpu_resume_mmu is aligned for older CPUs. Note that we also align
to a 32-byte boundary to ensure that the code can't cross a section
boundary.
Change-Id: I356eeff464eec48d167d98ee45b80b300d7c4c99
Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Reviewed-on: http://git-master/r/85726
Reviewed-by: Automatic_Commit_Validation_User
Diffstat (limited to 'arch/arm/kernel')
| -rw-r--r-- | arch/arm/kernel/sleep.S | 8 | ||||
| -rw-r--r-- | arch/arm/kernel/suspend.c | 4 |
2 files changed, 4 insertions, 8 deletions
diff --git a/arch/arm/kernel/sleep.S b/arch/arm/kernel/sleep.S index 9d403d6c56d3..54cd05876251 100644 --- a/arch/arm/kernel/sleep.S +++ b/arch/arm/kernel/sleep.S @@ -72,19 +72,15 @@ ENDPROC(cpu_suspend_abort) /* * r0 = control register value */ + .align 5 ENTRY(cpu_resume_mmu) ldr r3, =cpu_resume_after_mmu - b cpu_resume_turn_mmu_on -ENDPROC(cpu_resume_mmu) - .ltorg - .align 5 -ENTRY(cpu_resume_turn_mmu_on) mcr p15, 0, r0, c1, c0, 0 @ turn on MMU, I-cache, etc mrc p15, 0, r0, c0, c0, 0 @ read id reg mov r0, r0 mov r0, r0 mov pc, r3 @ jump to virtual address -ENDPROC(cpu_resume_turn_mmu_on) +ENDPROC(cpu_resume_mmu) cpu_resume_after_mmu: bl cpu_init mov r0, #0 @ return zero on success diff --git a/arch/arm/kernel/suspend.c b/arch/arm/kernel/suspend.c index 2beda56e4574..ed4160b64e66 100644 --- a/arch/arm/kernel/suspend.c +++ b/arch/arm/kernel/suspend.c @@ -9,7 +9,7 @@ static pgd_t *suspend_pgd; extern int __cpu_suspend(int, long, unsigned long, int (*)(unsigned long)); -extern void cpu_resume_turn_mmu_on(void); +extern void cpu_resume_mmu(void); /* * Hide the first two arguments to __cpu_suspend - these are an implementation @@ -43,7 +43,7 @@ static int __init cpu_suspend_init(void) { suspend_pgd = pgd_alloc(&init_mm); if (suspend_pgd) { - unsigned long addr = virt_to_phys(cpu_resume_turn_mmu_on); + unsigned long addr = virt_to_phys(cpu_resume_mmu); identity_mapping_add(suspend_pgd, addr, addr + SECTION_SIZE); } return suspend_pgd ? 0 : -ENOMEM; |