diff options
Diffstat (limited to 'src/cpu/intel/fsp_model_406dx/acpi.c')
| -rw-r--r-- | src/cpu/intel/fsp_model_406dx/acpi.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/src/cpu/intel/fsp_model_406dx/acpi.c b/src/cpu/intel/fsp_model_406dx/acpi.c index 6672eab3d1..078905deac 100644 --- a/src/cpu/intel/fsp_model_406dx/acpi.c +++ b/src/cpu/intel/fsp_model_406dx/acpi.c @@ -13,6 +13,7 @@ */ #include <types.h> +#include <commonlib/helpers.h> #include <console/console.h> #include <arch/acpi.h> #include <arch/acpigen.h> @@ -20,6 +21,7 @@ #include <cpu/x86/msr.h> #include <cpu/intel/speedstep.h> #include <cpu/intel/turbo.h> +#include <delay.h> #include <device/device.h> #include <device/pci.h> #include "model_406dx.h" @@ -154,6 +156,20 @@ static int calculate_power(int tdp, int p1_ratio, int ratio) return (int)power; } +static int get_core_frequency_mhz(int ratio) +{ + int fsb, core_freq; + + /* Get BCLK - different SKUs can have different BCLK */ + fsb = get_timer_fsb(); + + printk(BIOS_DEBUG, "BCLK:%d MHz ratio:%d\n", fsb, ratio); + + core_freq = DIV_ROUND_CLOSEST(fsb * ratio, 100) * 100; + printk(BIOS_DEBUG, "core frequency for ratio(%d) %dMHz\n", ratio, core_freq); + return core_freq; +} + static void generate_P_state_entries(int core, int cores_per_package) { int ratio_min, ratio_max, ratio_turbo, ratio_step; @@ -177,7 +193,7 @@ static void generate_P_state_entries(int core, int cores_per_package) /* Max Non-Turbo Ratio */ ratio_max = (msr.lo >> 8) & 0xff; } - clock_max = ratio_max * RANGELEY_BCLK; + clock_max = get_core_frequency_mhz(ratio_max); /* Calculate CPU TDP in mW */ msr = rdmsr(MSR_PKG_POWER_SKU_UNIT); @@ -240,7 +256,7 @@ static void generate_P_state_entries(int core, int cores_per_package) /* Calculate power at this ratio */ power = calculate_power(power_max, ratio_max, ratio); - clock = ratio * RANGELEY_BCLK; + clock = get_core_frequency_mhz(ratio); acpigen_write_PSS_package( clock, /*MHz*/ |