1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _ASM_X86_MICROCODE_AMD_H
 3#define _ASM_X86_MICROCODE_AMD_H
 4
 5#include <asm/microcode.h>
 6
 7#define UCODE_MAGIC			0x00414d44
 8#define UCODE_EQUIV_CPU_TABLE_TYPE	0x00000000
 9#define UCODE_UCODE_TYPE		0x00000001
10
11#define SECTION_HDR_SIZE		8
12#define CONTAINER_HDR_SZ		12
13
14struct equiv_cpu_entry {
15	u32	installed_cpu;
16	u32	fixed_errata_mask;
17	u32	fixed_errata_compare;
18	u16	equiv_cpu;
19	u16	res;
20} __attribute__((packed));
21
22struct microcode_header_amd {
23	u32	data_code;
24	u32	patch_id;
25	u16	mc_patch_data_id;
26	u8	mc_patch_data_len;
27	u8	init_flag;
28	u32	mc_patch_data_checksum;
29	u32	nb_dev_id;
30	u32	sb_dev_id;
31	u16	processor_rev_id;
32	u8	nb_rev_id;
33	u8	sb_rev_id;
34	u8	bios_api_rev;
35	u8	reserved1[3];
36	u32	match_reg[8];
37} __attribute__((packed));
38
39struct microcode_amd {
40	struct microcode_header_amd	hdr;
41	unsigned int			mpb[];
42};
43
44#define PATCH_MAX_SIZE (3 * PAGE_SIZE)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
45
46#ifdef CONFIG_MICROCODE_AMD
47extern void __init load_ucode_amd_bsp(unsigned int family);
48extern void load_ucode_amd_ap(unsigned int family);
49extern int __init save_microcode_in_initrd_amd(unsigned int family);
50void reload_ucode_amd(void);
51#else
52static inline void __init load_ucode_amd_bsp(unsigned int family) {}
53static inline void load_ucode_amd_ap(unsigned int family) {}
54static inline int __init
55save_microcode_in_initrd_amd(unsigned int family) { return -EINVAL; }
56static inline void reload_ucode_amd(void) {}
57#endif
 
 
58#endif /* _ASM_X86_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
13struct 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
21struct 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
38struct microcode_amd {
39	struct microcode_header_amd	hdr;
40	unsigned int			mpb[0];
41};
42
43static 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
60extern int __apply_microcode_amd(struct microcode_amd *mc_amd);
61extern int apply_microcode_amd(int cpu);
62extern enum ucode_state load_microcode_amd(int cpu, u8 family, const u8 *data, size_t size);
63
64#define PATCH_MAX_SIZE PAGE_SIZE
65extern u8 amd_ucode_patch[PATCH_MAX_SIZE];
66
67#ifdef CONFIG_MICROCODE_AMD
68extern void __init load_ucode_amd_bsp(unsigned int family);
69extern void load_ucode_amd_ap(void);
70extern int __init save_microcode_in_initrd_amd(void);
71void reload_ucode_amd(void);
72#else
73static inline void __init load_ucode_amd_bsp(unsigned int family) {}
74static inline void load_ucode_amd_ap(void) {}
75static inline int __init save_microcode_in_initrd_amd(void) { return -EINVAL; }
76void reload_ucode_amd(void) {}
 
77#endif
78
79extern bool check_current_patch_level(u32 *rev, bool early);
80#endif /* _ASM_X86_MICROCODE_AMD_H */