1 #ifndef _ASM_X86_MICROCODE_H 2 #define _ASM_X86_MICROCODE_H 3 4 #define native_rdmsr(msr, val1, val2) \ 5 do { \ 6 u64 __val = native_read_msr((msr)); \ 7 (void)((val1) = (u32)__val); \ 8 (void)((val2) = (u32)(__val >> 32)); \ 9 } while (0) 10 11 #define native_wrmsr(msr, low, high) \ 12 native_write_msr(msr, low, high) 13 14 #define native_wrmsrl(msr, val) \ 15 native_write_msr((msr), \ 16 (u32)((u64)(val)), \ 17 (u32)((u64)(val) >> 32)) 18 19 struct cpu_signature { 20 unsigned int sig; 21 unsigned int pf; 22 unsigned int rev; 23 }; 24 25 struct device; 26 27 enum ucode_state { UCODE_ERROR, UCODE_OK, UCODE_NFOUND }; 28 29 struct microcode_ops { 30 enum ucode_state (*request_microcode_user) (int cpu, 31 const void __user *buf, size_t size); 32 33 enum ucode_state (*request_microcode_fw) (int cpu, struct device *, 34 bool refresh_fw); 35 36 void (*microcode_fini_cpu) (int cpu); 37 38 /* 39 * The generic 'microcode_core' part guarantees that 40 * the callbacks below run on a target cpu when they 41 * are being called. 42 * See also the "Synchronization" section in microcode_core.c. 43 */ 44 int (*apply_microcode) (int cpu); 45 int (*collect_cpu_info) (int cpu, struct cpu_signature *csig); 46 }; 47 48 struct ucode_cpu_info { 49 struct cpu_signature cpu_sig; 50 int valid; 51 void *mc; 52 }; 53 extern struct ucode_cpu_info ucode_cpu_info[]; 54 55 #ifdef CONFIG_MICROCODE_INTEL 56 extern struct microcode_ops * __init init_intel_microcode(void); 57 #else 58 static inline struct microcode_ops * __init init_intel_microcode(void) 59 { 60 return NULL; 61 } 62 #endif /* CONFIG_MICROCODE_INTEL */ 63 64 #ifdef CONFIG_MICROCODE_AMD 65 extern struct microcode_ops * __init init_amd_microcode(void); 66 extern void __exit exit_amd_microcode(void); 67 #else 68 static inline struct microcode_ops * __init init_amd_microcode(void) 69 { 70 return NULL; 71 } 72 static inline void __exit exit_amd_microcode(void) {} 73 #endif 74 75 #ifdef CONFIG_MICROCODE_EARLY 76 #define MAX_UCODE_COUNT 128 77 extern void __init load_ucode_bsp(void); 78 extern void load_ucode_ap(void); 79 extern int __init save_microcode_in_initrd(void); 80 #else 81 static inline void __init load_ucode_bsp(void) {} 82 static inline void load_ucode_ap(void) {} 83 static inline int __init save_microcode_in_initrd(void) 84 { 85 return 0; 86 } 87 #endif 88 89 #endif /* _ASM_X86_MICROCODE_H */ 90