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cpu/intel/common: Add support for energy performance preference (EPP)

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This provides support to update energy performance preference value.

BUG=b:219785001
BRANCH=firmware-brya-14505.B

Signed-off-by: Cliff Huang <cliff.huang@intel.corp-partner.google.com>
Change-Id: I381bca6c7746a4ae7ca32aa1b4992a6d53c8eaaa
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62653
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
This commit is contained in:
Cliff Huang
2022-03-07 18:39:56 -08:00
committed by Felix Held
parent 9f4010753d
commit 6277077d88
3 changed files with 66 additions and 1 deletions
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3
src/include/cpu/x86/msr.h
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@@ -86,8 +86,11 @@
#define IA32_VMX_MISC_MSR 0x485
#define IA32_PM_ENABLE 0x770
#define HWP_ENABLE 0x1
#define IA32_HWP_CAPABILITIES 0x771
#define IA32_HWP_REQUEST 0x774
#define IA32_HWP_REQUEST_EPP_MASK 0xff000000
#define IA32_HWP_REQUEST_EPP_SHIFT 24
#define IA32_HWP_STATUS 0x777
#define IA32_L3_PROTECTED_WAYS 0xc85
#define IA32_SF_QOS_INFO 0xc87