[linux-2.6-block.git] / arch / x86 / include / asm / microcode_intel.h

/* 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 */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
9cd4d78e FY	2	#ifndef _ASM_X86_MICROCODE_INTEL_H
	3	#define _ASM_X86_MICROCODE_INTEL_H
	4
	5	#include <asm/microcode.h>
	6
	7	struct microcode_header_intel {
	8	unsigned int hdrver;
	9	unsigned int rev;
	10	unsigned int date;
	11	unsigned int sig;
	12	unsigned int cksum;
	13	unsigned int ldrver;
	14	unsigned int pf;
	15	unsigned int datasize;
	16	unsigned int totalsize;
	17	unsigned int reserved[3];
	18	};
	19
	20	struct microcode_intel {
	21	struct microcode_header_intel hdr;
	22	unsigned int bits[0];
	23	};
	24
	25	/* microcode format is extended from prescott processors */
	26	struct extended_signature {
	27	unsigned int sig;
	28	unsigned int pf;
	29	unsigned int cksum;
	30	};
	31
	32	struct extended_sigtable {
	33	unsigned int count;
	34	unsigned int cksum;
	35	unsigned int reserved[3];
	36	struct extended_signature sigs[0];
	37	};
	38
	39	#define DEFAULT_UCODE_DATASIZE (2000)
	40	#define MC_HEADER_SIZE (sizeof(struct microcode_header_intel))
	41	#define DEFAULT_UCODE_TOTALSIZE (DEFAULT_UCODE_DATASIZE + MC_HEADER_SIZE)
	42	#define EXT_HEADER_SIZE (sizeof(struct extended_sigtable))
	43	#define EXT_SIGNATURE_SIZE (sizeof(struct extended_signature))
9cd4d78e FY	44
9cd4d78e FY	45	#define get_totalsize(mc) \
ebc14ddc	46	(((struct microcode_intel *)mc)->hdr.datasize ? \
9cd4d78e FY	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
9cd4d78e FY	54	#define exttable_size(et) ((et)->count * EXT_SIGNATURE_SIZE + EXT_HEADER_SIZE)
9cd4d78e FY	55
4167709b BP	56	static inline u32 intel_get_microcode_revision(void)
	57	{
	58	u32 rev, dummy;
	59
	60	native_wrmsrl(MSR_IA32_UCODE_REV, 0);
	61
	62	/* As documented in the SDM: Do a CPUID 1 here */
	63	native_cpuid_eax(1);
	64
	65	/* get the current revision from MSR 0x8B */
	66	native_rdmsr(MSR_IA32_UCODE_REV, dummy, rev);
	67
	68	return rev;
	69	}
	70
fe055896	71	#ifdef CONFIG_MICROCODE_INTEL
9cd4d78e	72	extern void __init load_ucode_intel_bsp(void);
148f9bb8	73	extern void load_ucode_intel_ap(void);
9cd4d78e	74	extern void show_ucode_info_early(void);
f2b3ee82	75	extern int __init save_microcode_in_initrd_intel(void);
fbae4ba8	76	void reload_ucode_intel(void);
9cd4d78e FY	77	#else
9cd4d78e FY	78	static inline __init void load_ucode_intel_bsp(void) {}
148f9bb8	79	static inline void load_ucode_intel_ap(void) {}
9cd4d78e	80	static inline void show_ucode_info_early(void) {}
f2b3ee82	81	static inline int __init save_microcode_in_initrd_intel(void) { return -EINVAL; }
fbae4ba8	82	static inline void reload_ucode_intel(void) {}
9cd4d78e FY	83	#endif
9cd4d78e FY	84
9cd4d78e	85	#endif /* _ASM_X86_MICROCODE_INTEL_H */