1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 #ifndef __CPU__INTEL__MICROCODE__ 3 #define __CPU__INTEL__MICROCODE__ 4 5 #include <stdint.h> 6 7 /* Find the microcode and reload the microcode if SoC has RELOAD_MICROCODE_PATCH 8 * config selected. */ 9 void intel_reload_microcode(void); 10 11 void intel_update_microcode_from_cbfs(void); 12 /* Find a microcode that matches the revision and platform family returning 13 * NULL if none found. The found microcode is cached for faster access on 14 * subsequent calls of this function. 15 * 16 * Since this function caches the found microcode (NULL or a valid microcode 17 * pointer), it is expected to be run from BSP before starting any other APs. 18 * It is not multithread safe otherwise. */ 19 const void *intel_microcode_find(void); 20 21 /* It is up to the caller to determine if parallel loading is possible as 22 * well as ensuring the microcode matches the family and revision (i.e. with 23 * intel_microcode_find()). */ 24 void intel_microcode_load_unlocked(const void *microcode_patch); 25 26 /* SoC specific check to determine if microcode update is really 27 * required, will skip microcode update if true. */ 28 int soc_skip_ucode_update(u32 current_patch_id, u32 new_patch_id); 29 30 /* return the version of the currently running microcode */ 31 uint32_t get_current_microcode_rev(void); 32 33 /* extract microcode revision from the given patch */ 34 uint32_t get_microcode_rev(const void *microcode); 35 /* extract microcode size from the given patch */ 36 uint32_t get_microcode_size(const void *microcode); 37 /* extract checksum from the given patch */ 38 uint32_t get_microcode_checksum(const void *microcode); 39 #endif 40