diff options
Diffstat (limited to 'src/soc/intel/skylake/cpu.c')
| -rw-r--r-- | src/soc/intel/skylake/cpu.c | 17 |
1 files changed, 16 insertions, 1 deletions
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); |