diff options
Diffstat (limited to 'src/soc/intel/broadwell/cpu.c')
| -rw-r--r-- | src/soc/intel/broadwell/cpu.c | 143 |
1 files changed, 1 insertions, 142 deletions
diff --git a/src/soc/intel/broadwell/cpu.c b/src/soc/intel/broadwell/cpu.c index fb4fecbd3d..1923301aa2 100644 --- a/src/soc/intel/broadwell/cpu.c +++ b/src/soc/intel/broadwell/cpu.c @@ -16,6 +16,7 @@ #include <cpu/x86/name.h> #include <cpu/x86/smm.h> #include <delay.h> +#include <intelblocks/cpulib.h> #include <soc/cpu.h> #include <soc/msr.h> #include <soc/pci_devs.h> @@ -25,64 +26,6 @@ #include <soc/intel/broadwell/chip.h> #include <cpu/intel/common/common.h> -/* Convert time in seconds to POWER_LIMIT_1_TIME MSR value */ -static const u8 power_limit_time_sec_to_msr[] = { - [0] = 0x00, - [1] = 0x0a, - [2] = 0x0b, - [3] = 0x4b, - [4] = 0x0c, - [5] = 0x2c, - [6] = 0x4c, - [7] = 0x6c, - [8] = 0x0d, - [10] = 0x2d, - [12] = 0x4d, - [14] = 0x6d, - [16] = 0x0e, - [20] = 0x2e, - [24] = 0x4e, - [28] = 0x6e, - [32] = 0x0f, - [40] = 0x2f, - [48] = 0x4f, - [56] = 0x6f, - [64] = 0x10, - [80] = 0x30, - [96] = 0x50, - [112] = 0x70, - [128] = 0x11, -}; - -/* Convert POWER_LIMIT_1_TIME MSR value to seconds */ -static const u8 power_limit_time_msr_to_sec[] = { - [0x00] = 0, - [0x0a] = 1, - [0x0b] = 2, - [0x4b] = 3, - [0x0c] = 4, - [0x2c] = 5, - [0x4c] = 6, - [0x6c] = 7, - [0x0d] = 8, - [0x2d] = 10, - [0x4d] = 12, - [0x6d] = 14, - [0x0e] = 16, - [0x2e] = 20, - [0x4e] = 24, - [0x6e] = 28, - [0x0f] = 32, - [0x2f] = 40, - [0x4f] = 48, - [0x6f] = 56, - [0x10] = 64, - [0x30] = 80, - [0x50] = 96, - [0x70] = 112, - [0x11] = 128, -}; - /* The core 100MHz BLCK is disabled in deeper c-states. One needs to calibrate * the 100MHz BCLCK against the 24MHz BLCK to restore the clocks properly * when a core is woken up. */ @@ -288,90 +231,6 @@ static void configure_pch_power_sharing(void) RCBA32(PMSYNC_CONFIG2) = pmsync2; } -int cpu_config_tdp_levels(void) -{ - msr_t platform_info; - - /* Bits 34:33 indicate how many levels supported */ - platform_info = rdmsr(MSR_PLATFORM_INFO); - return (platform_info.hi >> 1) & 3; -} - -/* - * Configure processor power limits if possible - * This must be done AFTER set of BIOS_RESET_CPL - */ -void set_power_limits(u8 power_limit_1_time) -{ - msr_t msr = rdmsr(MSR_PLATFORM_INFO); - msr_t limit; - unsigned int power_unit; - unsigned int tdp, min_power, max_power, max_time; - u8 power_limit_1_val; - - if (power_limit_1_time >= ARRAY_SIZE(power_limit_time_sec_to_msr)) - power_limit_1_time = ARRAY_SIZE(power_limit_time_sec_to_msr) - 1; - - if (!(msr.lo & PLATFORM_INFO_SET_TDP)) - return; - - /* Get units */ - msr = rdmsr(MSR_PKG_POWER_SKU_UNIT); - power_unit = 2 << ((msr.lo & 0xf) - 1); - - /* Get power defaults for this SKU */ - msr = rdmsr(MSR_PKG_POWER_SKU); - tdp = msr.lo & 0x7fff; - min_power = (msr.lo >> 16) & 0x7fff; - max_power = msr.hi & 0x7fff; - max_time = (msr.hi >> 16) & 0x7f; - - printk(BIOS_DEBUG, "CPU TDP: %u Watts\n", tdp / power_unit); - - if (power_limit_time_msr_to_sec[max_time] > power_limit_1_time) - power_limit_1_time = power_limit_time_msr_to_sec[max_time]; - - if (min_power > 0 && tdp < min_power) - tdp = min_power; - - if (max_power > 0 && tdp > max_power) - tdp = max_power; - - power_limit_1_val = power_limit_time_sec_to_msr[power_limit_1_time]; - - /* Set long term power limit to TDP */ - limit.lo = 0; - limit.lo |= tdp & PKG_POWER_LIMIT_MASK; - limit.lo |= PKG_POWER_LIMIT_EN; - 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 */ - limit.hi = 0; - limit.hi |= ((tdp * 125) / 100) & PKG_POWER_LIMIT_MASK; - 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; - MCHBAR32(MCH_PKG_POWER_LIMIT_HI) = limit.hi; - - /* 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); - wrmsr(MSR_DDR_RAPL_LIMIT, msr); - - /* Use nominal TDP values for CPUs with configurable TDP */ - if (cpu_config_tdp_levels()) { - msr = rdmsr(MSR_CONFIG_TDP_NOMINAL); - limit.hi = 0; - limit.lo = msr.lo & 0xff; - wrmsr(MSR_TURBO_ACTIVATION_RATIO, limit); - } -} - static void configure_c_states(void) { msr_t msr; |