diff options
| author | Joseph Lo <josephl@nvidia.com> | 2015-04-15 10:09:50 +0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2015-04-27 07:44:59 +0200 |
| commit | c38d3e8131b0f6ed7e576d1a66ac9513b1810f27 (patch) | |
| tree | 73c0532239b8202b74d24cb8efd6b0281b8bd807 /src/arch/arm64/include/armv8 | |
| parent | c4301f79691995dfedb56cb3e20adea3ecd8f596 (diff) | |
arm64: implement CPU power down sequence as per A57/A53/A72 TRM
Implement the individual core powerdown sequence as per
Cortex-A57/A53/A72 TRM.
Based-on-the-work-by:
Varun Wadekar <vwadekar@nvidia.com>
BRANCH=none
BUG=none
TEST=boot on smaug/foster, verify the cpu_on/off is ok as well
Change-Id: I4719fcbe86b35f9b448d274e1732da5fc75346b0
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: b6bdcc12150820dfad28cef3af3d8220847c5d74
Original-Change-Id: I65abab8cda55cfe7a0c424f3175677ed5e3c2a1c
Original-Signed-off-by: Joseph Lo <josephl@nvidia.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/265827
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/9980
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marc.jones@se-eng.com>
Diffstat (limited to 'src/arch/arm64/include/armv8')
| -rw-r--r-- | src/arch/arm64/include/armv8/arch/cpu.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/arch/arm64/include/armv8/arch/cpu.h b/src/arch/arm64/include/armv8/arch/cpu.h index 14635e39c0..4e15209be0 100644 --- a/src/arch/arm64/include/armv8/arch/cpu.h +++ b/src/arch/arm64/include/armv8/arch/cpu.h @@ -187,4 +187,18 @@ void arm64_cpu_startup_resume(void); */ void arm64_arch_timer_init(void); +/* + * The cortex_a57_cpu_power_down sequence as per A57/A53/A72 TRM. + * L2 flush by HW(0) or SW(1), if system/HW driven L2 flush is supported. + */ +#define NO_L2_FLUSH 0 +#define L2_FLUSH_HW 0 +#define L2_FLUSH_SW 1 + +#if IS_ENABLED(CONFIG_ARCH_ARM64_CORTEX_A57_POWER_DOWN_SUPPORT) +void cortex_a57_cpu_power_down(int l2_flush); +#else +static inline void cortex_a57_cpu_power_down(int l2_flush) {} +#endif + #endif /* __ARCH_CPU_H__ */ |