| /* SPDX-License-Identifier: GPL-2.0-only */ |
| #ifndef __CPU__INTEL__MICROCODE__ |
| #define __CPU__INTEL__MICROCODE__ |
| |
| #include <stdint.h> |
| |
| void intel_update_microcode_from_cbfs(void); |
| /* Find a microcode that matches the revision and platform family returning |
| * NULL if none found. The found microcode is cached for faster access on |
| * subsequent calls of this function. |
| * |
| * Since this function caches the found microcode (NULL or a valid microcode |
| * pointer), it is expected to be run from BSP before starting any other APs. |
| * It is not multithread safe otherwise. */ |
| 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()). */ |
| void intel_microcode_load_unlocked(const void *microcode_patch); |
| |
| /* SoC specific check to determine if microcode update is really |
| * required, will skip microcode update if true. */ |
| int soc_skip_ucode_update(u32 current_patch_id, u32 new_patch_id); |
| |
| /* return the version of the currently running microcode */ |
| uint32_t get_current_microcode_rev(void); |
| |
| /* extract microcode revision from the given patch */ |
| uint32_t get_microcode_rev(const void *microcode); |
| /* extract microcode size from the given patch */ |
| uint32_t get_microcode_size(const void *microcode); |
| /* extract checksum from the given patch */ |
| uint32_t get_microcode_checksum(const void *microcode); |
| #endif |