1#ifndef _ASM_X86_MICROCODE_INTEL_H 2#define _ASM_X86_MICROCODE_INTEL_H 3 4#include <asm/microcode.h> 5 6struct microcode_header_intel { 7 unsigned int hdrver; 8 unsigned int rev; 9 unsigned int date; 10 unsigned int sig; 11 unsigned int cksum; 12 unsigned int ldrver; 13 unsigned int pf; 14 unsigned int datasize; 15 unsigned int totalsize; 16 unsigned int reserved[3]; 17}; 18 19struct microcode_intel { 20 struct microcode_header_intel hdr; 21 unsigned int bits[0]; 22}; 23 24/* microcode format is extended from prescott processors */ 25struct extended_signature { 26 unsigned int sig; 27 unsigned int pf; 28 unsigned int cksum; 29}; 30 31struct extended_sigtable { 32 unsigned int count; 33 unsigned int cksum; 34 unsigned int reserved[3]; 35 struct extended_signature sigs[0]; 36}; 37 38#define DEFAULT_UCODE_DATASIZE (2000) 39#define MC_HEADER_SIZE (sizeof(struct microcode_header_intel)) 40#define DEFAULT_UCODE_TOTALSIZE (DEFAULT_UCODE_DATASIZE + MC_HEADER_SIZE) 41#define EXT_HEADER_SIZE (sizeof(struct extended_sigtable)) 42#define EXT_SIGNATURE_SIZE (sizeof(struct extended_signature)) 43 44#define get_totalsize(mc) \ 45 (((struct microcode_intel *)mc)->hdr.datasize ? \ 46 ((struct microcode_intel *)mc)->hdr.totalsize : \ 47 DEFAULT_UCODE_TOTALSIZE) 48 49#define get_datasize(mc) \ 50 (((struct microcode_intel *)mc)->hdr.datasize ? \ 51 ((struct microcode_intel *)mc)->hdr.datasize : DEFAULT_UCODE_DATASIZE) 52 53#define exttable_size(et) ((et)->count * EXT_SIGNATURE_SIZE + EXT_HEADER_SIZE) 54 55static inline u32 intel_get_microcode_revision(void) 56{ 57 u32 rev, dummy; 58 59 native_wrmsrl(MSR_IA32_UCODE_REV, 0); 60 61 /* As documented in the SDM: Do a CPUID 1 here */ 62 native_cpuid_eax(1); 63 64 /* get the current revision from MSR 0x8B */ 65 native_rdmsr(MSR_IA32_UCODE_REV, dummy, rev); 66 67 return rev; 68} 69 70#ifdef CONFIG_MICROCODE_INTEL 71extern void __init load_ucode_intel_bsp(void); 72extern void load_ucode_intel_ap(void); 73extern void show_ucode_info_early(void); 74extern int __init save_microcode_in_initrd_intel(void); 75void reload_ucode_intel(void); 76#else 77static inline __init void load_ucode_intel_bsp(void) {} 78static inline void load_ucode_intel_ap(void) {} 79static inline void show_ucode_info_early(void) {} 80static inline int __init save_microcode_in_initrd_intel(void) { return -EINVAL; } 81static inline void reload_ucode_intel(void) {} 82#endif 83 84#endif /* _ASM_X86_MICROCODE_INTEL_H */ 85