arch/arm64: Extend cache helper functions

This patch extends the cpu_get_cache_info function, so that
additional information like size of cache lines can be retrieved.

Patch was tested against the qemu-sbsa mainboard.

Change-Id: If6fe731dc67ffeaff9344d2bd2627f45185c27de
Signed-off-by: David Milosevic <David.Milosevic@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79106
Reviewed-by: Benjamin Doron <benjamin.doron00@gmail.com>
Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

1 files changed, 9 insertions, 1 deletions

diff --git a/src/arch/arm64/include/armv8/arch/cache.h b/src/arch/arm64/include/armv8/arch/cache.h
index 5097196308..da6edfdcb7 100644
--- a/src/arch/arm64/include/armv8/arch/cache.h
+++ b/src/arch/arm64/include/armv8/arch/cache.h
@@ -31,8 +31,16 @@ enum cache_type {
 	CACHE_UNIFIED = 4,
 };
 
+struct cache_info {
+	uint64_t size;          // total size of cache in bytes
+	uint64_t associativity; // number of cache lines in a set
+	uint64_t numsets;       // number of sets in a cache
+	uint8_t  line_bytes;    // size of cache line in bytes
+};
+
 enum cache_type cpu_get_cache_type(enum cache_level level);
-void cpu_get_cache_info(enum cache_level level, enum cache_type, size_t *cache_size, size_t *assoc);
+enum cb_err cpu_get_cache_info(const enum cache_level level, const enum cache_type type,
+			       struct cache_info *info);
 
 /* dcache clean by virtual address to PoC */
 void dcache_clean_by_mva(void const *addr, size_t len);