diff options
Diffstat (limited to 'src/soc/intel/skylake/acpi.c')
| -rw-r--r-- | src/soc/intel/skylake/acpi.c | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/src/soc/intel/skylake/acpi.c b/src/soc/intel/skylake/acpi.c index 637092be97..743b33f9ae 100644 --- a/src/soc/intel/skylake/acpi.c +++ b/src/soc/intel/skylake/acpi.c @@ -369,6 +369,19 @@ static void generate_p_state_entries(int core, int cores_per_package) acpigen_pop_len(); } +static void generate_cppc_entries(int core_id) +{ + /* Generate GCPC table in first logical core */ + if (core_id == 0) { + struct cppc_config cppc_config; + cpu_init_cppc_config(&cppc_config, CPPC_VERSION_2); + acpigen_write_CPPC_package(&cppc_config); + } + + /* Write _CST entry for each logical core */ + acpigen_write_CPPC_method(); +} + void generate_cpu_entries(const struct device *device) { int core_id, cpu_id, pcontrol_blk = ACPI_BASE_ADDRESS, plen = 6; @@ -377,16 +390,11 @@ void generate_cpu_entries(const struct device *device) int numcpus = totalcores/cores_per_package; config_t *config = config_of_soc(); int is_s0ix_enable = config->s0ix_enable; + const bool isst_supported = cpuid_eax(6) & CPUID_6_EAX_ISST; printk(BIOS_DEBUG, "Found %d CPU(s) with %d core(s) each.\n", numcpus, cores_per_package); - if (cpuid_eax(6) & CPUID_6_EAX_ISST) { - struct cppc_config cppc_config; - cpu_init_cppc_config(&cppc_config, 2 /* version 2 */); - acpigen_write_CPPC_package(&cppc_config); - } - for (cpu_id = 0; cpu_id < numcpus; cpu_id++) { for (core_id = 0; core_id < cores_per_package; core_id++) { if (core_id > 0) { @@ -407,8 +415,8 @@ void generate_cpu_entries(const struct device *device) cores_per_package); } - if (cpuid_eax(6) & CPUID_6_EAX_ISST) - acpigen_write_CPPC_method(); + if (isst_supported) + generate_cppc_entries(core_id); acpigen_pop_len(); } |