diff options
| author | Shelley Chen <shchen@chromium.org> | 2017-06-29 11:31:16 -0700 |
|---|---|---|
| committer | Aaron Durbin <adurbin@chromium.org> | 2017-07-14 22:47:25 +0000 |
| commit | 20c3ea5c4f2c83df7c9416b2b9cbcff63e2c74f1 (patch) | |
| tree | 4f53314fef60d9a75fea39ce13e76bd85e3f9c5b /src | |
| parent | 2a7fbea3f14cae2119816c5a28c455f45c75650f (diff) | |
| download | coreboot-20c3ea5c4f2c83df7c9416b2b9cbcff63e2c74f1.tar.xz | |
soc/intel/skylake: Set PsysPL2 MSR
BUG=b:7473486, b:35775024
BRANCH=None
TEST=On bootup make sure PL2 and PsysPL2 values set
properly (through debug output)
Change-Id: I847a8458382e7db1689b426f32ff2dcbc5a0899c
Signed-off-by: Shelley Chen <shchen@chromium.org>
Reviewed-on: https://review.coreboot.org/20418
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/intel/skylake/chip.h | 3 | ||||
| -rw-r--r-- | src/soc/intel/skylake/cpu.c | 17 | ||||
| -rw-r--r-- | src/soc/intel/skylake/include/soc/msr.h | 1 |
3 files changed, 20 insertions, 1 deletions
diff --git a/src/soc/intel/skylake/chip.h b/src/soc/intel/skylake/chip.h index b4f6545c36..67a6783186 100644 --- a/src/soc/intel/skylake/chip.h +++ b/src/soc/intel/skylake/chip.h @@ -97,6 +97,9 @@ struct soc_intel_skylake_config { /* PL2 Override value in Watts */ u32 tdp_pl2_override; + /* SysPL2 Value in Watts */ + u32 tdp_psyspl2; + /* * The following fields come from FspUpdVpd.h. * These are configuration values that are passed to FSP during diff --git a/src/soc/intel/skylake/cpu.c b/src/soc/intel/skylake/cpu.c index 7f455e0d59..1a081915a2 100644 --- a/src/soc/intel/skylake/cpu.c +++ b/src/soc/intel/skylake/cpu.c @@ -160,10 +160,11 @@ void set_power_limits(u8 power_limit_1_time) limit.lo |= (power_limit_1_val & PKG_POWER_LIMIT_TIME_MASK) << PKG_POWER_LIMIT_TIME_SHIFT; - /* Set short term power limit to 1.25 * TDP */ + /* Set short term power limit to 1.25 * TDP if no config given */ limit.hi = 0; tdp_pl2 = (conf->tdp_pl2_override == 0) ? (tdp * 125) / 100 : (conf->tdp_pl2_override * power_unit); + printk(BIOS_DEBUG, "CPU PL2 = %u Watts\n", tdp_pl2 / power_unit); limit.hi |= (tdp_pl2) & PKG_POWER_LIMIT_MASK; limit.hi |= PKG_POWER_LIMIT_CLAMP; limit.hi |= PKG_POWER_LIMIT_EN; @@ -175,6 +176,20 @@ void set_power_limits(u8 power_limit_1_time) MCHBAR32(MCH_PKG_POWER_LIMIT_LO) = limit.lo & (~(PKG_POWER_LIMIT_EN)); MCHBAR32(MCH_PKG_POWER_LIMIT_HI) = limit.hi; + /* Set PsysPl2 */ + if (conf->tdp_psyspl2) { + limit = rdmsr(MSR_PLATFORM_POWER_LIMIT); + limit.hi = 0; + printk(BIOS_DEBUG, "CPU PsysPL2 = %u Watts\n", + conf->tdp_psyspl2); + limit.hi |= (conf->tdp_psyspl2 * power_unit) & + PKG_POWER_LIMIT_MASK; + limit.hi |= PKG_POWER_LIMIT_CLAMP; + limit.hi |= PKG_POWER_LIMIT_EN; + + wrmsr(MSR_PLATFORM_POWER_LIMIT, limit); + } + /* Set DDR RAPL power limit by copying from MMIO to MSR */ msr.lo = MCHBAR32(MCH_DDR_POWER_LIMIT_LO); msr.hi = MCHBAR32(MCH_DDR_POWER_LIMIT_HI); diff --git a/src/soc/intel/skylake/include/soc/msr.h b/src/soc/intel/skylake/include/soc/msr.h index 81b6cc9de1..4ff4ad2d49 100644 --- a/src/soc/intel/skylake/include/soc/msr.h +++ b/src/soc/intel/skylake/include/soc/msr.h @@ -37,5 +37,6 @@ #define MSR_VR_MISC_CONFIG2 0x636 #define MSR_PP0_POWER_LIMIT 0x638 #define MSR_PP1_POWER_LIMIT 0x640 +#define MSR_PLATFORM_POWER_LIMIT 0x65c #endif |