arch/x86/include/asm/microcode_amd.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_X86_MICROCODE_AMD_H
   3 #define _ASM_X86_MICROCODE_AMD_H
   4
   5 #include <asm/microcode.h>
   6
   7 #define UCODE_MAGIC                     0x00414d44
   8 #define UCODE_EQUIV_CPU_TABLE_TYPE      0x00000000
   9 #define UCODE_UCODE_TYPE                0x00000001
  10
  11 #define SECTION_HDR_SIZE                8
  12 #define CONTAINER_HDR_SZ                12
  13
  14 struct equiv_cpu_entry {
  15         u32     installed_cpu;
  16         u32     fixed_errata_mask;
  17         u32     fixed_errata_compare;
  18         u16     equiv_cpu;
  19         u16     res;
  20 } __attribute__((packed));
  21
  22 struct microcode_header_amd {
  23         u32     data_code;
  24         u32     patch_id;
  25         u16     mc_patch_data_id;
  26         u8      mc_patch_data_len;
  27         u8      init_flag;
  28         u32     mc_patch_data_checksum;
  29         u32     nb_dev_id;
  30         u32     sb_dev_id;
  31         u16     processor_rev_id;
  32         u8      nb_rev_id;
  33         u8      sb_rev_id;
  34         u8      bios_api_rev;
  35         u8      reserved1[3];
  36         u32     match_reg[8];
  37 } __attribute__((packed));
  38
  39 struct microcode_amd {
  40         struct microcode_header_amd     hdr;
  41         unsigned int                    mpb[0];
  42 };
  43
  44 #define PATCH_MAX_SIZE (3 * PAGE_SIZE)
  45
  46 #ifdef CONFIG_MICROCODE_AMD
  47 extern void __init load_ucode_amd_bsp(unsigned int family);
  48 extern void load_ucode_amd_ap(unsigned int family);
  49 extern int __init save_microcode_in_initrd_amd(unsigned int family);
  50 void reload_ucode_amd(void);
  51 #else
  52 static inline void __init load_ucode_amd_bsp(unsigned int family) {}
  53 static inline void load_ucode_amd_ap(unsigned int family) {}
  54 static inline int __init
  55 save_microcode_in_initrd_amd(unsigned int family) { return -EINVAL; }
  56 static inline void reload_ucode_amd(void) {}
  57 #endif
  58 #endif /* _ASM_X86_MICROCODE_AMD_H */