diff options
| author | Cliff Huang <cliff.huang@intel.corp-partner.google.com> | 2022-03-07 18:42:13 -0800 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2022-03-14 15:48:11 +0000 |
| commit | 0bb2225718ef898c102ed88ed9deebfe1a714df0 (patch) | |
| tree | 4de3ee40dc422a1f3f75fcd133a661d63e211ede /src/soc/intel | |
| parent | ca9658bdb2f4097ca9c5d4f20a131caa0b09100f (diff) | |
soc/intel/alderlake: Add EPP override support
This updates energy performance preference value to all logical CPUs
when the corresponding chip config is true.
BUG=b:219785001
BRANCH=firmware-brya-14505.B
Signed-off-by: Cliff Huang <cliff.huang@intel.corp-partner.google.com>
Change-Id: Ie59623fe715b0c545f8d4b6c22ab2ce670a29798
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62654
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Diffstat (limited to 'src/soc/intel')
| -rw-r--r-- | src/soc/intel/alderlake/chip.h | 4 | ||||
| -rw-r--r-- | src/soc/intel/alderlake/cpu.c | 20 |
2 files changed, 23 insertions, 1 deletions
diff --git a/src/soc/intel/alderlake/chip.h b/src/soc/intel/alderlake/chip.h index 7a169025e4..e77a3dc114 100644 --- a/src/soc/intel/alderlake/chip.h +++ b/src/soc/intel/alderlake/chip.h @@ -559,6 +559,10 @@ struct soc_intel_alderlake_config { * 0: Fast/2, 1: Fast/4, 2: Fast/8, 3: Fast/16; see enum slew_rate for values */ uint8_t SlowSlewRate[NUM_VR_DOMAINS]; + + /* Energy-Performance Preference (HWP feature) */ + bool enable_energy_perf_pref; + uint8_t energy_perf_pref_value; }; typedef struct soc_intel_alderlake_config config_t; diff --git a/src/soc/intel/alderlake/cpu.c b/src/soc/intel/alderlake/cpu.c index 66db16b6ed..7d4fb9cdf2 100644 --- a/src/soc/intel/alderlake/cpu.c +++ b/src/soc/intel/alderlake/cpu.c @@ -122,6 +122,11 @@ void soc_core_init(struct device *cpu) /* Set energy policy */ set_energy_perf_bias(ENERGY_POLICY_NORMAL); + const config_t *conf = config_of_soc(); + /* Set energy-performance preference */ + if (conf->enable_energy_perf_pref) + if (check_energy_perf_cap()) + set_energy_perf_pref(conf->energy_perf_pref_value); /* Enable Turbo */ enable_turbo(); } @@ -132,6 +137,19 @@ static void per_cpu_smm_trigger(void) smm_relocate(); } +static void pre_mp_init(void) +{ + soc_fsp_load(); + + const config_t *conf = config_of_soc(); + if (conf->enable_energy_perf_pref) { + if (check_energy_perf_cap()) + enable_energy_perf_pref(); + else + printk(BIOS_WARNING, "Energy Performance Preference not supported!\n"); + } +} + static void post_mp_init(void) { /* Set Max Ratio */ @@ -152,7 +170,7 @@ static const struct mp_ops mp_ops = { * that are set prior to ramstage. * Real MTRRs programming are being done after resource allocation. */ - .pre_mp_init = soc_fsp_load, + .pre_mp_init = pre_mp_init, .get_cpu_count = get_cpu_count, .get_smm_info = smm_info, .get_microcode_info = get_microcode_info, |