diff options
| author | Scott Williams <scwilliams@nvidia.com> | 2011-08-03 21:44:21 -0700 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2011-11-30 21:47:02 -0800 |
| commit | 381b82041036f33f18a6a4a303e3a985baf24ab6 (patch) | |
| tree | 47956940ae833398515e85fff2e840f6a741b623 /arch/arm/mach-tegra/sleep.h | |
| parent | e3e523668c9d6431ba5b2888707cd96b9d3f75b6 (diff) | |
ARM: tegra: power: Define push/pop context register macros
Define macros to ensure that the behavior of push/pop of the
context regsiter set is consistent across all callers.
Change-Id: If2e68764e9755979a205a57543b30438e9b7ff96
Signed-off-by: Scott Williams <scwilliams@nvidia.com>
Rebase-Id: Rb8f4984258e71c318e93fc709b18d1efdf5b2cc4
Diffstat (limited to 'arch/arm/mach-tegra/sleep.h')
| -rw-r--r-- | arch/arm/mach-tegra/sleep.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/sleep.h b/arch/arm/mach-tegra/sleep.h index 947d4d8867dd..31547d4522af 100644 --- a/arch/arm/mach-tegra/sleep.h +++ b/arch/arm/mach-tegra/sleep.h @@ -93,6 +93,22 @@ dsb .endm +.macro push_ctx_regs + stmfd sp!, {r4 - r11, lr} + /* FIXME: The next two instructions should be removed if our change to + save the diagnostic regsiter in the CPU context is accepted. */ + mrc p15, 0, r4, c15, c0, 1 @ read diagnostic register + stmfd sp!, {r4} +.endm + +.macro pop_ctx_regs + /* FIXME: The next two instructions should be removed if our change to + save the diagnostic regsiter in the CPU context is accepted. */ + ldmfd sp!, {r4} + mcr p15, 0, r4, c15, c0, 1 @ write diagnostic register + ldmfd sp!, {r4 - r11, lr} +.endm + #else #define FLOW_CTRL_HALT_CPU(cpu) (IO_ADDRESS(TEGRA_FLOW_CTRL_BASE) + \ |