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authorJacob Shin <jacob.shin@amd.com>2013-05-30 14:09:18 -0500
committerH. Peter Anvin <hpa@linux.intel.com>2013-05-30 20:19:25 -0700
commita76096a6571d5389376753c2e18b30a9791fa072 (patch)
tree1ca270330019b9d46ad6f499a7fa5bb69f56ba40 /arch/x86/include/asm/microcode_amd.h
parentf2b3ee820a9f2368d7f8842ad7da062dfe86e199 (diff)
x86, microcode, amd: Refactor functions to prepare for early loading
In preparation work for early loading, refactor some common functions that will be shared, and move some struct defines to a common header file. Signed-off-by: Jacob Shin <jacob.shin@amd.com> Link: http://lkml.kernel.org/r/1369940959-2077-4-git-send-email-jacob.shin@amd.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com>
Diffstat (limited to 'arch/x86/include/asm/microcode_amd.h')
-rw-r--r--arch/x86/include/asm/microcode_amd.h64
1 files changed, 64 insertions, 0 deletions
diff --git a/arch/x86/include/asm/microcode_amd.h b/arch/x86/include/asm/microcode_amd.h
new file mode 100644
index 000000000000..a57d9b75f30b
--- /dev/null
+++ b/arch/x86/include/asm/microcode_amd.h
@@ -0,0 +1,64 @@
+#ifndef _ASM_X86_MICROCODE_AMD_H
+#define _ASM_X86_MICROCODE_AMD_H
+
+#include <asm/microcode.h>
+
+#define UCODE_MAGIC 0x00414d44
+#define UCODE_EQUIV_CPU_TABLE_TYPE 0x00000000
+#define UCODE_UCODE_TYPE 0x00000001
+
+#define SECTION_HDR_SIZE 8
+#define CONTAINER_HDR_SZ 12
+
+struct equiv_cpu_entry {
+ u32 installed_cpu;
+ u32 fixed_errata_mask;
+ u32 fixed_errata_compare;
+ u16 equiv_cpu;
+ u16 res;
+} __attribute__((packed));
+
+struct microcode_header_amd {
+ u32 data_code;
+ u32 patch_id;
+ u16 mc_patch_data_id;
+ u8 mc_patch_data_len;
+ u8 init_flag;
+ u32 mc_patch_data_checksum;
+ u32 nb_dev_id;
+ u32 sb_dev_id;
+ u16 processor_rev_id;
+ u8 nb_rev_id;
+ u8 sb_rev_id;
+ u8 bios_api_rev;
+ u8 reserved1[3];
+ u32 match_reg[8];
+} __attribute__((packed));
+
+struct microcode_amd {
+ struct microcode_header_amd hdr;
+ unsigned int mpb[0];
+};
+
+static inline u16 find_equiv_id(struct equiv_cpu_entry *equiv_cpu_table,
+ unsigned int sig)
+{
+ int i = 0;
+
+ if (!equiv_cpu_table)
+ return 0;
+
+ while (equiv_cpu_table[i].installed_cpu != 0) {
+ if (sig == equiv_cpu_table[i].installed_cpu)
+ return equiv_cpu_table[i].equiv_cpu;
+
+ i++;
+ }
+ return 0;
+}
+
+extern int __apply_microcode_amd(struct microcode_amd *mc_amd);
+extern int apply_microcode_amd(int cpu);
+extern enum ucode_state load_microcode_amd(int cpu, const u8 *data, size_t size);
+
+#endif /* _ASM_X86_MICROCODE_AMD_H */