diff options
| author | Arthur Heymans <arthur@aheymans.xyz> | 2022-11-12 19:10:43 +0100 |
|---|---|---|
| committer | Arthur Heymans <arthur@aheymans.xyz> | 2022-11-29 19:58:09 +0000 |
| commit | aab91213b2189472cc3f0e6bc11bf60e76902771 (patch) | |
| tree | 7586d1f137d4a929948775659515f0d68be7a418 /src/soc | |
| parent | 39f5042d9e67439a9d486248d4578c4e3dca6277 (diff) | |
| download | coreboot-aab91213b2189472cc3f0e6bc11bf60e76902771.tar.gz coreboot-aab91213b2189472cc3f0e6bc11bf60e76902771.tar.bz2 coreboot-aab91213b2189472cc3f0e6bc11bf60e76902771.zip | |
soc/intel/alderlake/acpi.c: Don't look up coreboot CPU index
The coreboot CPU index for a lapic is arbitrary: it depends on which
CPU obtains a spinlock first. Simply using an increasing index will
result in consistent ACPI tables across each boot.
Change-Id: Iaaaef213b32b33e3ec9f4874d576896c2335211c
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69510
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/intel/alderlake/acpi.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/src/soc/intel/alderlake/acpi.c b/src/soc/intel/alderlake/acpi.c index 1c820c27505b..c874067701d4 100644 --- a/src/soc/intel/alderlake/acpi.c +++ b/src/soc/intel/alderlake/acpi.c @@ -279,6 +279,7 @@ void soc_lpi_get_constraints(void *unused) acpigen_emit_byte(RETURN_OP); acpigen_write_package(num_entries); + size_t cpu_index = 0; for (dev = all_devices; dev; dev = dev->next) { min_sleep_state = get_min_sleep_state(dev); if (min_sleep_state == NONE) @@ -294,15 +295,8 @@ void soc_lpi_get_constraints(void *unused) break; case DEVICE_PATH_APIC: - /* Lookup CPU id */ - for (size_t i = 0; i < CONFIG_MAX_CPUS; i++) { - if (cpu_get_apic_id(i) == dev->path.apic.apic_id) { - snprintf(path, sizeof(path), - CONFIG_ACPI_CPU_STRING, i); - break; - } - } - + snprintf(path, sizeof(path), CONFIG_ACPI_CPU_STRING, + cpu_index++); acpigen_emit_namestring(path); break; |