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1#ifndef _ASM_X86_MICROCODE_INTEL_H
2#define _ASM_X86_MICROCODE_INTEL_H
3
4#include <asm/microcode.h>
5
6struct 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
19struct microcode_intel {
20 struct microcode_header_intel hdr;
21 unsigned int bits[0];
22};
23
24/* microcode format is extended from prescott processors */
25struct extended_signature {
26 unsigned int sig;
27 unsigned int pf;
28 unsigned int cksum;
29};
30
31struct 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
59extern int
60get_matching_microcode(unsigned int csig, int cpf, void *mc, int rev);
61extern int microcode_sanity_check(void *mc, int print_err);
62extern int get_matching_sig(unsigned int csig, int cpf, void *mc, int rev);
63extern int
64update_match_revision(struct microcode_header_intel *mc_header, int rev);
65
66#ifdef CONFIG_MICROCODE_INTEL_EARLY
67extern void __init load_ucode_intel_bsp(void);
68extern void load_ucode_intel_ap(void);
69extern void show_ucode_info_early(void);
70extern int __init save_microcode_in_initrd_intel(void);
71#else
72static inline __init void load_ucode_intel_bsp(void) {}
73static inline void load_ucode_intel_ap(void) {}
74static inline void show_ucode_info_early(void) {}
75static 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)
79extern int save_mc_for_early(u8 *mc);
80#else
81static inline int save_mc_for_early(u8 *mc)
82{
83 return 0;
84}
85#endif
86
87#endif /* _ASM_X86_MICROCODE_INTEL_H */