diff options
Diffstat (limited to 'src/soc/intel/skylake/cpu.c')
| -rw-r--r-- | src/soc/intel/skylake/cpu.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/src/soc/intel/skylake/cpu.c b/src/soc/intel/skylake/cpu.c index 368738057f..2fa858257d 100644 --- a/src/soc/intel/skylake/cpu.c +++ b/src/soc/intel/skylake/cpu.c @@ -116,8 +116,10 @@ void set_power_limits(u8 power_limit_1_time) msr_t msr = rdmsr(MSR_PLATFORM_INFO); msr_t limit; unsigned power_unit; - unsigned tdp, min_power, max_power, max_time; + unsigned tdp, min_power, max_power, max_time, tdp_pl2; u8 power_limit_1_val; + device_t dev = SA_DEV_ROOT; + config_t *conf = dev->chip_info; if (power_limit_1_time > ARRAY_SIZE(power_limit_time_sec_to_msr)) power_limit_1_time = 28; @@ -127,7 +129,7 @@ void set_power_limits(u8 power_limit_1_time) /* Get units */ msr = rdmsr(MSR_PKG_POWER_SKU_UNIT); - power_unit = 2 << ((msr.lo & 0xf) - 1); + power_unit = 1 << (msr.lo & 0xf); /* Get power defaults for this SKU */ msr = rdmsr(MSR_PKG_POWER_SKU); @@ -162,15 +164,17 @@ void set_power_limits(u8 power_limit_1_time) /* Set short term power limit to 1.25 * TDP */ limit.hi = 0; - limit.hi |= ((tdp * 125) / 100) & PKG_POWER_LIMIT_MASK; + tdp_pl2 = (conf->tdp_pl2_override == 0) ? + (tdp * 125) / 100 : (conf->tdp_pl2_override * power_unit); + limit.hi |= (tdp_pl2) & PKG_POWER_LIMIT_MASK; limit.hi |= PKG_POWER_LIMIT_CLAMP; limit.hi |= PKG_POWER_LIMIT_EN; /* Power limit 2 time is only programmable on server SKU */ wrmsr(MSR_PKG_POWER_LIMIT, limit); - /* Set power limit values in MCHBAR as well */ - MCHBAR32(MCH_PKG_POWER_LIMIT_LO) = limit.lo; + /* Set PL2 power limit values in MCHBAR and disable PL1 */ + MCHBAR32(MCH_PKG_POWER_LIMIT_LO) = limit.lo & (~(PKG_POWER_LIMIT_EN)); MCHBAR32(MCH_PKG_POWER_LIMIT_HI) = limit.hi; /* Set DDR RAPL power limit by copying from MMIO to MSR */ |