diff options
Diffstat (limited to 'src/soc/intel/braswell/cpu.c')
| -rw-r--r-- | src/soc/intel/braswell/cpu.c | 53 |
1 files changed, 52 insertions, 1 deletions
diff --git a/src/soc/intel/braswell/cpu.c b/src/soc/intel/braswell/cpu.c index 3abec6b53ced..e648ce04a318 100644 --- a/src/soc/intel/braswell/cpu.c +++ b/src/soc/intel/braswell/cpu.c @@ -29,6 +29,7 @@ #include <cpu/x86/mtrr.h> #include <cpu/x86/smm.h> #include <soc/intel/common/memmap.h> +#include <reg_script.h> #include <soc/msr.h> #include <soc/pattrs.h> #include <soc/ramstage.h> @@ -53,6 +54,31 @@ static int adjust_apic_id(int index, int apic_id) return 2 * index; } +/* Package level MSRs */ +const struct reg_script package_msr_script[] = { + /* Set Package TDP to ~7W */ + REG_MSR_WRITE(MSR_PKG_POWER_LIMIT, 0x3880fa), + REG_MSR_RMW(MSR_PP1_POWER_LIMIT, ~(0x7f << 17), 0), + REG_MSR_WRITE(MSR_PKG_TURBO_CFG1, 0x702), + REG_MSR_WRITE(MSR_CPU_TURBO_WKLD_CFG1, 0x200b), + REG_MSR_WRITE(MSR_CPU_TURBO_WKLD_CFG2, 0), + REG_MSR_WRITE(MSR_CPU_THERM_CFG1, 0x00000305), + REG_MSR_WRITE(MSR_CPU_THERM_CFG2, 0x0405500d), + REG_MSR_WRITE(MSR_CPU_THERM_SENS_CFG, 0x27), + REG_SCRIPT_END +}; + +/* Core level MSRs */ +const struct reg_script core_msr_script[] = { + /* Dynamic L2 shrink enable and threshold, clear SINGLE_PCTL bit 11 */ + REG_MSR_RMW(MSR_PMG_CST_CONFIG_CONTROL, ~0x3f080f, 0xe0008), + REG_MSR_RMW(MSR_POWER_MISC, + ~(ENABLE_ULFM_AUTOCM_MASK | ENABLE_INDP_AUTOCM_MASK), 0), + /* Disable C1E */ + REG_MSR_RMW(MSR_POWER_CTL, ~0x2, 0), + REG_MSR_OR(MSR_POWER_MISC, 0x44), + REG_SCRIPT_END +}; void soc_init_cpus(device_t dev) { @@ -78,6 +104,10 @@ void soc_init_cpus(device_t dev) default_smm_area = backup_default_smm_area(); + /* Set package MSRs */ + reg_script_run(package_msr_script); + + /* Enable Turbo Mode on BSP and siblings of the BSP's building block. */ enable_turbo(); if (mp_init(cpu_bus, &mp_params)) @@ -86,9 +116,30 @@ void soc_init_cpus(device_t dev) restore_default_smm_area(default_smm_area); } +static void soc_core_init(device_t cpu) +{ + printk(BIOS_SPEW, "%s/%s ( %s )\n", + __FILE__, __func__, dev_name(cpu)); + printk(BIOS_DEBUG, "Init Braswell core.\n"); + + /* + * The turbo disable bit is actually scoped at building + * block level -- not package. For non-bsp cores that are within a + * building block enable turbo. The cores within the BSP's building + * block will just see it already enabled and move on. + */ + if (lapicid()) + enable_turbo(); + + /* Set core MSRs */ + reg_script_run(core_msr_script); + + /* Set this core to max frequency ratio */ + set_max_freq(); +} static struct device_operations cpu_dev_ops = { - .init = NULL, + .init = soc_core_init, }; static struct cpu_device_id cpu_table[] = { |