diff options
| -rw-r--r-- | src/cpu/intel/microcode/microcode.c | 7 | ||||
| -rw-r--r-- | src/include/cpu/intel/microcode.h | 4 |
2 files changed, 9 insertions, 2 deletions
diff --git a/src/cpu/intel/microcode/microcode.c b/src/cpu/intel/microcode/microcode.c index 0f362d4b35..9d6d28b3e6 100644 --- a/src/cpu/intel/microcode/microcode.c +++ b/src/cpu/intel/microcode/microcode.c @@ -119,13 +119,16 @@ uint32_t get_microcode_checksum(const void *microcode) const void *intel_microcode_find(void) { - const struct microcode *ucode_updates; + static const struct microcode *ucode_updates; size_t microcode_len; u32 eax; u32 pf, rev, sig, update_size; unsigned int x86_model, x86_family; msr_t msr; + if (ucode_updates) + return ucode_updates; + ucode_updates = cbfs_map(MICROCODE_CBFS_FILE, µcode_len); if (ucode_updates == NULL) return NULL; @@ -173,6 +176,8 @@ const void *intel_microcode_find(void) microcode_len -= update_size; } + ucode_updates = NULL; + return NULL; } diff --git a/src/include/cpu/intel/microcode.h b/src/include/cpu/intel/microcode.h index f1a8601258..7fd6eac286 100644 --- a/src/include/cpu/intel/microcode.h +++ b/src/include/cpu/intel/microcode.h @@ -6,8 +6,10 @@ void intel_update_microcode_from_cbfs(void); /* Find a microcode that matches the revision and platform family returning - * NULL if none found. */ + * NULL if none found. The found microcode is cached for faster access on + * subsequent calls of this function. */ const void *intel_microcode_find(void); + /* It is up to the caller to determine if parallel loading is possible as * well as ensuring the microcode matches the family and revision (i.e. with * intel_microcode_find()). */ |