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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137/* SPDX-License-Identifier: GPL-2.0 */#ifndef _X86_MICROCODE_INTERNAL_H#define _X86_MICROCODE_INTERNAL_H
#include <linux/earlycpio.h>#include <linux/initrd.h>
#include <asm/cpu.h>#include <asm/microcode.h>
struct device;
enum ucode_state { UCODE_OK = 0, UCODE_NEW, UCODE_NEW_SAFE, UCODE_UPDATED, UCODE_NFOUND, UCODE_ERROR, UCODE_TIMEOUT, UCODE_OFFLINE,};
struct microcode_ops { enum ucode_state (*request_microcode_fw)(int cpu, struct device *dev); void (*microcode_fini_cpu)(int cpu);
/* * The generic 'microcode_core' part guarantees that the callbacks * below run on a target CPU when they are being called. * See also the "Synchronization" section in microcode_core.c. */ enum ucode_state (*apply_microcode)(int cpu); void (*stage_microcode)(void); int (*collect_cpu_info)(int cpu, struct cpu_signature *csig); void (*finalize_late_load)(int result); unsigned int nmi_safe : 1, use_nmi : 1, use_staging : 1;};
struct early_load_data { u32 old_rev; u32 new_rev;};
extern struct early_load_data early_data;extern struct ucode_cpu_info ucode_cpu_info[];extern u32 microcode_rev[NR_CPUS];extern u32 base_rev;
struct cpio_data find_microcode_in_initrd(const char *path);
#define MAX_UCODE_COUNT 128
#define QCHAR(a, b, c, d) ((a) + ((b) << 8) + ((c) << 16) + ((d) << 24))#define CPUID_INTEL1 QCHAR('G', 'e', 'n', 'u')#define CPUID_INTEL2 QCHAR('i', 'n', 'e', 'I')#define CPUID_INTEL3 QCHAR('n', 't', 'e', 'l')#define CPUID_AMD1 QCHAR('A', 'u', 't', 'h')#define CPUID_AMD2 QCHAR('e', 'n', 't', 'i')#define CPUID_AMD3 QCHAR('c', 'A', 'M', 'D')
#define CPUID_IS(a, b, c, ebx, ecx, edx) \ (!(((ebx) ^ (a)) | ((edx) ^ (b)) | ((ecx) ^ (c))))
/* * In early loading microcode phase on BSP, boot_cpu_data is not set up yet. * x86_cpuid_vendor() gets vendor id for BSP. * * In 32 bit AP case, accessing boot_cpu_data needs linear address. To simplify * coding, we still use x86_cpuid_vendor() to get vendor id for AP. * * x86_cpuid_vendor() gets vendor information directly from CPUID. */static inline int x86_cpuid_vendor(void){ u32 eax = 0x00000000; u32 ebx, ecx = 0, edx;
native_cpuid(&eax, &ebx, &ecx, &edx);
if (CPUID_IS(CPUID_INTEL1, CPUID_INTEL2, CPUID_INTEL3, ebx, ecx, edx)) return X86_VENDOR_INTEL;
if (CPUID_IS(CPUID_AMD1, CPUID_AMD2, CPUID_AMD3, ebx, ecx, edx)) return X86_VENDOR_AMD;
return X86_VENDOR_UNKNOWN;}
static inline unsigned int x86_cpuid_family(void){ u32 eax = 0x00000001; u32 ebx, ecx = 0, edx;
native_cpuid(&eax, &ebx, &ecx, &edx);
return x86_family(eax);}
extern bool force_minrev;
#ifdef CONFIG_CPU_SUP_AMDvoid load_ucode_amd_bsp(struct early_load_data *ed, unsigned int family);void load_ucode_amd_ap(unsigned int family);void reload_ucode_amd(unsigned int cpu);struct microcode_ops *init_amd_microcode(void);void exit_amd_microcode(void);#else /* CONFIG_CPU_SUP_AMD */static inline void load_ucode_amd_bsp(struct early_load_data *ed, unsigned int family) { }static inline void load_ucode_amd_ap(unsigned int family) { }static inline void reload_ucode_amd(unsigned int cpu) { }static inline struct microcode_ops *init_amd_microcode(void) { return NULL; }static inline void exit_amd_microcode(void) { }#endif /* !CONFIG_CPU_SUP_AMD */
#ifdef CONFIG_CPU_SUP_INTELvoid load_ucode_intel_bsp(struct early_load_data *ed);void load_ucode_intel_ap(void);void reload_ucode_intel(void);struct microcode_ops *init_intel_microcode(void);#else /* CONFIG_CPU_SUP_INTEL */static inline void load_ucode_intel_bsp(struct early_load_data *ed) { }static inline void load_ucode_intel_ap(void) { }static inline void reload_ucode_intel(void) { }static inline struct microcode_ops *init_intel_microcode(void) { return NULL; }#endif /* !CONFIG_CPU_SUP_INTEL */
#define ucode_dbg(fmt, ...) \({ \ if (IS_ENABLED(CONFIG_MICROCODE_DBG)) \ pr_info(fmt, ##__VA_ARGS__); \})
#endif /* _X86_MICROCODE_INTERNAL_H */