arch/x86/include/asm/microcode_amd.h

   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
  13 struct 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
  21 struct 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
  38 struct microcode_amd {
  39         struct microcode_header_amd     hdr;
  40         unsigned int                    mpb[0];
  41 };
  42
  43 static 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
  60 extern int __apply_microcode_amd(struct microcode_amd *mc_amd);
  61 extern int apply_microcode_amd(int cpu);
  62 extern enum ucode_state load_microcode_amd(int cpu, 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
  67 extern u8 amd_bsp_mpb[MPB_MAX_SIZE];
  68 #endif
  69 extern void __init load_ucode_amd_bsp(void);
  70 extern void load_ucode_amd_ap(void);
  71 extern int __init save_microcode_in_initrd_amd(void);
  72 #else
  73 static inline void __init load_ucode_amd_bsp(void) {}
  74 static inline void load_ucode_amd_ap(void) {}
  75 static inline int __init save_microcode_in_initrd_amd(void) { return -EINVAL; }
  76 #endif
  77
  78 #endif /* _ASM_X86_MICROCODE_AMD_H */