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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697/* SPDX-License-Identifier: GPL-2.0 */#ifndef _ASM_X86_MICROCODE_H#define _ASM_X86_MICROCODE_H
#include <asm/msr.h>#include <asm/cpuid/api.h>
struct cpu_signature { unsigned int sig; unsigned int pf; unsigned int rev;};
struct ucode_cpu_info { struct cpu_signature cpu_sig; void *mc;};
#ifdef CONFIG_MICROCODEvoid load_ucode_bsp(void);void load_ucode_ap(void);void microcode_bsp_resume(void);bool __init microcode_loader_disabled(void);#elsestatic inline void load_ucode_bsp(void) { }static inline void load_ucode_ap(void) { }static inline void microcode_bsp_resume(void) { }static inline bool __init microcode_loader_disabled(void) { return false; }#endif
extern unsigned long initrd_start_early;
#ifdef CONFIG_CPU_SUP_INTEL/* Intel specific microcode defines. Public for IFS */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 metasize; unsigned int min_req_ver; unsigned int reserved;};
struct microcode_intel { struct microcode_header_intel hdr; unsigned int bits[];};
#define DEFAULT_UCODE_DATASIZE (2000)#define MC_HEADER_SIZE (sizeof(struct microcode_header_intel))#define MC_HEADER_TYPE_MICROCODE 1#define MC_HEADER_TYPE_IFS 2
static inline int intel_microcode_get_datasize(struct microcode_header_intel *hdr){ return hdr->datasize ? : DEFAULT_UCODE_DATASIZE;}
extern u32 intel_get_platform_id(void);
static inline u32 intel_get_microcode_revision(void){ u32 rev, dummy;
native_wrmsrq(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;}#endif /* !CONFIG_CPU_SUP_INTEL */
bool microcode_nmi_handler(void);void microcode_offline_nmi_handler(void);
#ifdef CONFIG_MICROCODE_LATE_LOADINGDECLARE_STATIC_KEY_FALSE(microcode_nmi_handler_enable);static __always_inline bool microcode_nmi_handler_enabled(void){ return static_branch_unlikely(µcode_nmi_handler_enable);}#elsestatic __always_inline bool microcode_nmi_handler_enabled(void) { return false; }#endif
#endif /* _ASM_X86_MICROCODE_H */