arch/x86/include/asm/microcode_intel.h

   1 #ifndef _ASM_X86_MICROCODE_INTEL_H
   2 #define _ASM_X86_MICROCODE_INTEL_H
   3
   4 #include <asm/microcode.h>
   5
   6 struct microcode_header_intel {
   7         unsigned int            hdrver;
   8         unsigned int            rev;
   9         unsigned int            date;
  10         unsigned int            sig;
  11         unsigned int            cksum;
  12         unsigned int            ldrver;
  13         unsigned int            pf;
  14         unsigned int            datasize;
  15         unsigned int            totalsize;
  16         unsigned int            reserved[3];
  17 };
  18
  19 struct microcode_intel {
  20         struct microcode_header_intel hdr;
  21         unsigned int            bits[0];
  22 };
  23
  24 /* microcode format is extended from prescott processors */
  25 struct extended_signature {
  26         unsigned int            sig;
  27         unsigned int            pf;
  28         unsigned int            cksum;
  29 };
  30
  31 struct extended_sigtable {
  32         unsigned int            count;
  33         unsigned int            cksum;
  34         unsigned int            reserved[3];
  35         struct extended_signature sigs[0];
  36 };
  37
  38 #define DEFAULT_UCODE_DATASIZE  (2000)
  39 #define MC_HEADER_SIZE          (sizeof(struct microcode_header_intel))
  40 #define DEFAULT_UCODE_TOTALSIZE (DEFAULT_UCODE_DATASIZE + MC_HEADER_SIZE)
  41 #define EXT_HEADER_SIZE         (sizeof(struct extended_sigtable))
  42 #define EXT_SIGNATURE_SIZE      (sizeof(struct extended_signature))
  43 #define DWSIZE                  (sizeof(u32))
  44
  45 #define get_totalsize(mc) \
  46         (((struct microcode_intel *)mc)->hdr.totalsize ? \
  47          ((struct microcode_intel *)mc)->hdr.totalsize : \
  48          DEFAULT_UCODE_TOTALSIZE)
  49
  50 #define get_datasize(mc) \
  51         (((struct microcode_intel *)mc)->hdr.datasize ? \
  52          ((struct microcode_intel *)mc)->hdr.datasize : DEFAULT_UCODE_DATASIZE)
  53
  54 #define sigmatch(s1, s2, p1, p2) \
  55         (((s1) == (s2)) && (((p1) & (p2)) || (((p1) == 0) && ((p2) == 0))))
  56
  57 #define exttable_size(et) ((et)->count * EXT_SIGNATURE_SIZE + EXT_HEADER_SIZE)
  58
  59 extern int
  60 get_matching_microcode(unsigned int csig, int cpf, void *mc, int rev);
  61 extern int microcode_sanity_check(void *mc, int print_err);
  62 extern int get_matching_sig(unsigned int csig, int cpf, void *mc, int rev);
  63 extern int
  64 update_match_revision(struct microcode_header_intel *mc_header, int rev);
  65
  66 #ifdef CONFIG_MICROCODE_INTEL_EARLY
  67 extern void __init load_ucode_intel_bsp(void);
  68 extern void load_ucode_intel_ap(void);
  69 extern void show_ucode_info_early(void);
  70 extern int __init save_microcode_in_initrd_intel(void);
  71 #else
  72 static inline __init void load_ucode_intel_bsp(void) {}
  73 static inline void load_ucode_intel_ap(void) {}
  74 static inline void show_ucode_info_early(void) {}
  75 static inline int __init save_microcode_in_initrd_intel(void) { return -EINVAL; }
  76 #endif
  77
  78 #if defined(CONFIG_MICROCODE_INTEL_EARLY) && defined(CONFIG_HOTPLUG_CPU)
  79 extern int save_mc_for_early(u8 *mc);
  80 #else
  81 static inline int save_mc_for_early(u8 *mc)
  82 {
  83         return 0;
  84 }
  85 #endif
  86
  87 #endif /* _ASM_X86_MICROCODE_INTEL_H */