root/arch/x86/include/asm/microcode_intel.h

DEFINITIONS

1. load_ucode_intel_bsp
2. load_ucode_intel_ap
3. show_ucode_info_early
4. save_microcode_in_initrd_intel
5. reload_ucode_intel
6. save_mc_for_early

#ifndef _ASM_X86_MICROCODE_INTEL_H
#define _ASM_X86_MICROCODE_INTEL_H

#include <asm/microcode.h>

struct microcode_header_intel {
        unsigned int            hdrver;
        unsigned int            rev;
        unsigned int            date;
        unsigned int            sig;
        unsigned int            cksum;
        unsigned int            ldrver;
        unsigned int            pf;
        unsigned int            datasize;
        unsigned int            totalsize;
        unsigned int            reserved[3];
};

struct microcode_intel {
        struct microcode_header_intel hdr;
        unsigned int            bits[0];
};

/* microcode format is extended from prescott processors */
struct extended_signature {
        unsigned int            sig;
        unsigned int            pf;
        unsigned int            cksum;
};

struct extended_sigtable {
        unsigned int            count;
        unsigned int            cksum;
        unsigned int            reserved[3];
        struct extended_signature sigs[0];
};

#define DEFAULT_UCODE_DATASIZE  (2000)
#define MC_HEADER_SIZE          (sizeof(struct microcode_header_intel))
#define DEFAULT_UCODE_TOTALSIZE (DEFAULT_UCODE_DATASIZE + MC_HEADER_SIZE)
#define EXT_HEADER_SIZE         (sizeof(struct extended_sigtable))
#define EXT_SIGNATURE_SIZE      (sizeof(struct extended_signature))
#define DWSIZE                  (sizeof(u32))

#define get_totalsize(mc) \
        (((struct microcode_intel *)mc)->hdr.datasize ? \
         ((struct microcode_intel *)mc)->hdr.totalsize : \
         DEFAULT_UCODE_TOTALSIZE)

#define get_datasize(mc) \
        (((struct microcode_intel *)mc)->hdr.datasize ? \
         ((struct microcode_intel *)mc)->hdr.datasize : DEFAULT_UCODE_DATASIZE)

#define sigmatch(s1, s2, p1, p2) \
        (((s1) == (s2)) && (((p1) & (p2)) || (((p1) == 0) && ((p2) == 0))))

#define exttable_size(et) ((et)->count * EXT_SIGNATURE_SIZE + EXT_HEADER_SIZE)

extern int
get_matching_microcode(unsigned int csig, int cpf, void *mc, int rev);
extern int microcode_sanity_check(void *mc, int print_err);
extern int get_matching_sig(unsigned int csig, int cpf, void *mc, int rev);
extern int
update_match_revision(struct microcode_header_intel *mc_header, int rev);

#ifdef CONFIG_MICROCODE_INTEL_EARLY
extern void __init load_ucode_intel_bsp(void);
extern void load_ucode_intel_ap(void);
extern void show_ucode_info_early(void);
extern int __init save_microcode_in_initrd_intel(void);
void reload_ucode_intel(void);
#else
static inline __init void load_ucode_intel_bsp(void) {}
static inline void load_ucode_intel_ap(void) {}
static inline void show_ucode_info_early(void) {}
static inline int __init save_microcode_in_initrd_intel(void) { return -EINVAL; }
static inline void reload_ucode_intel(void) {}
#endif

#if defined(CONFIG_MICROCODE_INTEL_EARLY) && defined(CONFIG_HOTPLUG_CPU)
extern int save_mc_for_early(u8 *mc);
#else
static inline int save_mc_for_early(u8 *mc)
{
        return 0;
}
#endif

#endif /* _ASM_X86_MICROCODE_INTEL_H */