diff options
| author | Felix Held <felix-coreboot@felixheld.de> | 2022-08-08 22:57:31 +0200 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2022-08-17 16:24:16 +0000 |
| commit | d5ab24cd48006022ca60fe35f0f0366f3edce748 (patch) | |
| tree | 914c025a4c2ae34645a07033f5403089e213d9eb /src/soc/amd/common | |
| parent | 75547dbc53cde54dc83e26ef22828ce7cf9e2ba2 (diff) | |
soc/amd/common/acpi/cppc: add nominal and minimum frequencies
Now that we have functionality to get the minimal and nominal
frequencies, the corresponding fields in the CPPC config can now be
populated. If the HOB isn't present and/or the frequency values
could not be obtained, CPPC_UNSUPPORTED is still used; otherwise the
HOB-provided frequency in MHz is used for those two fields.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Signed-off-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Change-Id: Id3257690a3388d44ceceb7ac4f1db3d49e195caa
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66551
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/amd/common')
| -rw-r--r-- | src/soc/amd/common/block/acpi/cppc.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/src/soc/amd/common/block/acpi/cppc.c b/src/soc/amd/common/block/acpi/cppc.c index 224034d159..f1167e8d27 100644 --- a/src/soc/amd/common/block/acpi/cppc.c +++ b/src/soc/amd/common/block/acpi/cppc.c @@ -5,6 +5,7 @@ #include <amdblocks/cppc.h> #include <arch/cpu.h> #include <soc/msr.h> +#include <types.h> /* * version 2 is expected to be the typical use case. @@ -13,6 +14,9 @@ */ static void cpu_init_cppc_config(struct cppc_config *config, u32 version) { + uint32_t lowest_freq_mhz; + uint32_t nominal_freq_mhz; + config->version = version; config->entries[CPPC_HIGHEST_PERF] = CPPC_REG_MSR(MSR_CPPC_CAPABILITY_1, SHIFT_CPPC_CAPABILITY_1_HIGHEST_PERF, 8); @@ -42,8 +46,12 @@ static void cpu_init_cppc_config(struct cppc_config *config, u32 version) if (version < 3) return; - config->entries[CPPC_LOWEST_FREQ] = CPPC_UNSUPPORTED; - config->entries[CPPC_NOMINAL_FREQ] = CPPC_UNSUPPORTED; + config->entries[CPPC_LOWEST_FREQ] = + get_ccx_cppc_min_frequency(&lowest_freq_mhz) == CB_SUCCESS ? + CPPC_DWORD(lowest_freq_mhz) : CPPC_UNSUPPORTED; + config->entries[CPPC_NOMINAL_FREQ] = + get_ccx_cppc_nom_frequency(&nominal_freq_mhz) == CB_SUCCESS ? + CPPC_DWORD(nominal_freq_mhz) : CPPC_UNSUPPORTED; } void generate_cppc_entries(unsigned int core_id) |