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.datasize ? \
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 get_matching_microcode(unsigned int csig, int cpf, int rev, void *mc);
60extern int microcode_sanity_check(void *mc, int print_err);
61extern int get_matching_sig(unsigned int csig, int cpf, int rev, void *mc);
62
63static inline int
64revision_is_newer(struct microcode_header_intel *mc_header, int rev)
65{
66	return (mc_header->rev <= rev) ? 0 : 1;
67}
68
69#ifdef CONFIG_MICROCODE_INTEL_EARLY
70extern void __init load_ucode_intel_bsp(void);
71extern void load_ucode_intel_ap(void);
72extern void show_ucode_info_early(void);
73extern int __init save_microcode_in_initrd_intel(void);
74void reload_ucode_intel(void);
75#else
76static inline __init void load_ucode_intel_bsp(void) {}
77static inline void load_ucode_intel_ap(void) {}
78static inline void show_ucode_info_early(void) {}
79static inline int __init save_microcode_in_initrd_intel(void) { return -EINVAL; }
80static inline void reload_ucode_intel(void) {}
81#endif
82
83#if defined(CONFIG_MICROCODE_INTEL_EARLY) && defined(CONFIG_HOTPLUG_CPU)
84extern int save_mc_for_early(u8 *mc);
85#else
86static inline int save_mc_for_early(u8 *mc)
87{
88	return 0;
89}
90#endif
91
92#endif /* _ASM_X86_MICROCODE_INTEL_H */
93