diff options
| author | Subrata Banik <subratabanik@google.com> | 2024-07-16 12:56:38 +0000 |
|---|---|---|
| committer | Subrata Banik <subratabanik@google.com> | 2024-07-18 06:00:51 +0000 |
| commit | 4c5c68588251d6cee630ae809ef737498f2bd05f (patch) | |
| tree | 470af7f5acc19c4500daf0f3c30f631a08298bf3 /src/soc | |
| parent | 59093890573acb11ef8d2aff506bdc412704d9de (diff) | |
soc/intel/cmn/cpu: Introduce common CAR APIs
This patch adds `car_lib.c` to the IA common code to consolidate
SoC-agnostic CAR APIs. Initially, it includes `car_report_cache_info()`
to provide a unified way to read cache information, reducing the need
for SoC-specific implementations.
TEST=Builds successfully for google/rex.
Change-Id: I2ff84b27736057d19d4ec68c9afcb9b22e778f55
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83480
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <ericllai@google.com>
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/intel/common/block/cpu/Makefile.mk | 2 | ||||
| -rw-r--r-- | src/soc/intel/common/block/cpu/car/car_lib.c | 33 | ||||
| -rw-r--r-- | src/soc/intel/common/block/include/intelblocks/car_lib.h | 11 |
3 files changed, 46 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/cpu/Makefile.mk b/src/soc/intel/common/block/cpu/Makefile.mk index 8dd6796d59..d4c2a6c9b9 100644 --- a/src/soc/intel/common/block/cpu/Makefile.mk +++ b/src/soc/intel/common/block/cpu/Makefile.mk @@ -12,6 +12,8 @@ bootblock-$(CONFIG_SOC_INTEL_COMMON_BLOCK_CAR) += ../../../../../cpu/x86/early_r postcar-$(CONFIG_SOC_INTEL_COMMON_BLOCK_CAR) += car/exit_car.S endif +bootblock-$(CONFIG_SOC_INTEL_COMMON_BLOCK_CAR) += car/car_lib.c + bootblock-$(CONFIG_SOC_INTEL_COMMON_BLOCK_CPU) += cpulib.c romstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_CPU) += cpulib.c ramstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_CPU) += cpulib.c diff --git a/src/soc/intel/common/block/cpu/car/car_lib.c b/src/soc/intel/common/block/cpu/car/car_lib.c new file mode 100644 index 0000000000..a3c0d801f7 --- /dev/null +++ b/src/soc/intel/common/block/cpu/car/car_lib.c @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <arch/cpu.h> +#include <console/console.h> +#include <intelblocks/car_lib.h> + +/* + * Gathers and prints information about the CPU's L3 cache. + * + * This function does the following: + * 1. Sets the cache level of interest to L3. + * 2. Prints the following cache details to the console: + * - Cache level + * - Associativity (number of ways) + * - Number of physical partitions + * - Line size (in bytes) + * - Number of sets + * - Total cache size (in MiB), calculated using the 'get_cache_size' function. + */ +void car_report_cache_info(void) +{ + int cache_level = CACHE_L3; + struct cpu_cache_info info; + + if (!fill_cpu_cache_info(cache_level, &info)) + return; + + printk(BIOS_INFO, "Cache: Level %d: ", cache_level); + printk(BIOS_INFO, "Associativity = %zd Partitions = %zd Line Size = %zd Sets = %zd\n", + info.num_ways, info.physical_partitions, info.line_size, info.num_sets); + + printk(BIOS_INFO, "Cache size = %zu MiB\n", get_cache_size(&info)/MiB); +} diff --git a/src/soc/intel/common/block/include/intelblocks/car_lib.h b/src/soc/intel/common/block/include/intelblocks/car_lib.h new file mode 100644 index 0000000000..f106874c9c --- /dev/null +++ b/src/soc/intel/common/block/include/intelblocks/car_lib.h @@ -0,0 +1,11 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef SOC_INTEL_COMMON_BLOCK_CAR_LIB_H +#define SOC_INTEL_COMMON_BLOCK_CAR_LIB_H + +#include <types.h> + +/* Gathers and prints information about the CPU's L3 cache */ +void car_report_cache_info(void); + +#endif /* SOC_INTEL_COMMON_BLOCK_CAR_LIB_H */ |