86 lines
2.5 KiB
C
Executable File
86 lines
2.5 KiB
C
Executable File
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#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 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 exttable_size(et) ((et)->count * EXT_SIGNATURE_SIZE + EXT_HEADER_SIZE)
|
|
|
|
static inline u32 intel_get_microcode_revision(void)
|
|
{
|
|
u32 rev, dummy;
|
|
|
|
native_wrmsrl(MSR_IA32_UCODE_REV, 0);
|
|
|
|
/* As documented in the SDM: Do a CPUID 1 here */
|
|
native_cpuid_eax(1);
|
|
|
|
/* get the current revision from MSR 0x8B */
|
|
native_rdmsr(MSR_IA32_UCODE_REV, dummy, rev);
|
|
|
|
return rev;
|
|
}
|
|
|
|
#ifdef CONFIG_MICROCODE_INTEL
|
|
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
|
|
|
|
#endif /* _ASM_X86_MICROCODE_INTEL_H */
|