diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/intel/common/block/acpi/acpi.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/acpi/acpi.c b/src/soc/intel/common/block/acpi/acpi.c index 5951b30e11..f0ff89889a 100644 --- a/src/soc/intel/common/block/acpi/acpi.c +++ b/src/soc/intel/common/block/acpi/acpi.c @@ -1,6 +1,7 @@ /* SPDX-License-Identifier: GPL-2.0-or-later */ #include <acpi/acpigen.h> +#include <arch/cpu.h> #include <arch/ioapic.h> #include <arch/smp/mpspec.h> #include <bootstate.h> @@ -9,6 +10,7 @@ #include <acpi/acpi_gnvs.h> #include <console/console.h> #include <cpu/intel/turbo.h> +#include <cpu/intel/common/common.h> #include <cpu/x86/smm.h> #include <intelblocks/acpi.h> #include <intelblocks/msr.h> @@ -20,6 +22,8 @@ #include <soc/pm.h> #include <string.h> +#define CPUID_6_EAX_ISST (1 << 7) + __attribute__((weak)) unsigned long acpi_fill_mcfg(unsigned long current) { /* PCI Segment Group 0, Start Bus Number 0, End Bus Number is 255 */ @@ -391,6 +395,23 @@ void generate_t_state_entries(int core, int cores_per_package) acpigen_write_TSS_package(entries, soc_tss_table); } +static void generate_cppc_entries(int core_id) +{ + if (!(CONFIG(SOC_INTEL_COMMON_BLOCK_ACPI_CPPC) && + cpuid_eax(6) & CPUID_6_EAX_ISST)) + return; + + /* Generate GCPC package 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 _CPC entry for each logical core */ + acpigen_write_CPPC_method(); +} + __weak void soc_power_states_generation(int core_id, int cores_per_package) { @@ -421,6 +442,8 @@ void generate_cpu_entries(const struct device *device) /* Generate C-state tables */ generate_c_state_entries(); + generate_cppc_entries(core_id); + /* Soc specific power states generation */ soc_power_states_generation(core_id, cores_per_package); |