diff options
| author | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2023-04-12 17:55:25 +0300 |
|---|---|---|
| committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2023-04-14 08:45:07 +0000 |
| commit | 199ccf81ddad800fab6ea81fab1e1fce52746552 (patch) | |
| tree | c8844db3e74c18e7e2199b45f39e0b996767764e /src/cpu | |
| parent | 8e6146049fa50ea089437bb63b9f8e387cd975f2 (diff) | |
cpu/intel/speedstep: Refactor P-state coordination
Change-Id: I12462f271821d3d8fe3324d84a65c2341729591e
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74398
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Diffstat (limited to 'src/cpu')
| -rw-r--r-- | src/cpu/intel/speedstep/acpi.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/src/cpu/intel/speedstep/acpi.c b/src/cpu/intel/speedstep/acpi.c index acca77edf9..0d2cc87e09 100644 --- a/src/cpu/intel/speedstep/acpi.c +++ b/src/cpu/intel/speedstep/acpi.c @@ -60,6 +60,16 @@ static void gen_pstate_entries(const sst_table_t *const pstates, acpigen_write_PPC(0); } +static uint8_t get_p_state_coordination(void) +{ + /* For Penryn use HW_ALL. */ + if (((cpuid_eax(1) >> 4) & 0xffff) == 0x1067) + return HW_ALL; + + /* Use SW_ANY as that was the default. */ + return SW_ANY; +} + /** * @brief Generate ACPI entries for Speedstep for each cpu */ @@ -71,22 +81,17 @@ void generate_cpu_entries(const struct device *device) int numcpus = totalcores/cores_per_package; /* This assumes that all CPUs share the same layout. */ + int num_cstates; const acpi_cstate_t *cstates; sst_table_t pstates; - uint8_t coordination; + uint8_t coordination = get_p_state_coordination(); printk(BIOS_DEBUG, "Found %d CPU(s) with %d core(s) each.\n", numcpus, cores_per_package); num_cstates = get_cst_entries(&cstates); speedstep_gen_pstates(&pstates); - if (((cpuid_eax(1) >> 4) & 0xffff) == 0x1067) - /* For Penryn use HW_ALL. */ - coordination = HW_ALL; - else - /* Use SW_ANY as that was the default. */ - coordination = SW_ANY; for (cpuID = 0; cpuID < numcpus; ++cpuID) { for (coreID = 1; coreID <= cores_per_package; coreID++) { |