1#ifndef _ASM_X86_MICROCODE_AMD_H 2#define _ASM_X86_MICROCODE_AMD_H 3 4#include <asm/microcode.h> 5 6#define UCODE_MAGIC 0x00414d44 7#define UCODE_EQUIV_CPU_TABLE_TYPE 0x00000000 8#define UCODE_UCODE_TYPE 0x00000001 9 10#define SECTION_HDR_SIZE 8 11#define CONTAINER_HDR_SZ 12 12 13struct equiv_cpu_entry { 14 u32 installed_cpu; 15 u32 fixed_errata_mask; 16 u32 fixed_errata_compare; 17 u16 equiv_cpu; 18 u16 res; 19} __attribute__((packed)); 20 21struct microcode_header_amd { 22 u32 data_code; 23 u32 patch_id; 24 u16 mc_patch_data_id; 25 u8 mc_patch_data_len; 26 u8 init_flag; 27 u32 mc_patch_data_checksum; 28 u32 nb_dev_id; 29 u32 sb_dev_id; 30 u16 processor_rev_id; 31 u8 nb_rev_id; 32 u8 sb_rev_id; 33 u8 bios_api_rev; 34 u8 reserved1[3]; 35 u32 match_reg[8]; 36} __attribute__((packed)); 37 38struct microcode_amd { 39 struct microcode_header_amd hdr; 40 unsigned int mpb[0]; 41}; 42 43static inline u16 find_equiv_id(struct equiv_cpu_entry *equiv_cpu_table, 44 unsigned int sig) 45{ 46 int i = 0; 47 48 if (!equiv_cpu_table) 49 return 0; 50 51 while (equiv_cpu_table[i].installed_cpu != 0) { 52 if (sig == equiv_cpu_table[i].installed_cpu) 53 return equiv_cpu_table[i].equiv_cpu; 54 55 i++; 56 } 57 return 0; 58} 59 60extern int __apply_microcode_amd(struct microcode_amd *mc_amd); 61extern int apply_microcode_amd(int cpu); 62extern enum ucode_state load_microcode_amd(u8 family, const u8 *data, size_t size); 63 64#ifdef CONFIG_MICROCODE_AMD_EARLY 65#ifdef CONFIG_X86_32 66#define MPB_MAX_SIZE PAGE_SIZE 67extern u8 amd_bsp_mpb[MPB_MAX_SIZE]; 68#endif 69extern void __init load_ucode_amd_bsp(void); 70extern void load_ucode_amd_ap(void); 71extern int __init save_microcode_in_initrd_amd(void); 72#else 73static inline void __init load_ucode_amd_bsp(void) {} 74static inline void load_ucode_amd_ap(void) {} 75static inline int __init save_microcode_in_initrd_amd(void) { return -EINVAL; } 76#endif 77 78#endif /* _ASM_X86_MICROCODE_AMD_H */ 79