x86: AMD microcode patch loading support

index 56b9331..230ca7e 100644
@@ -93,6 +93,7 @@
 #include <asm/msr.h>
 #include <asm/uaccess.h>
 #include <asm/processor.h>
+#include <asm/microcode.h>
 
 MODULE_DESCRIPTION("Intel CPU (IA-32) Microcode Update Driver");
 MODULE_AUTHOR("Tigran Aivazian <[email protected]>");

new file mode 100644
index 0000000..5a05568
@@ -0,0 +1,34 @@
+struct microcode_header {
+	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            reserved[3];
+};
+
+struct microcode {
+	struct microcode_header hdr;
+	unsigned int            bits[0];
+};
+
+typedef struct microcode          microcode_t;
+typedef struct microcode_header   microcode_header_t;
+
+/* microcode format is extended from prescott processors */
+struct extended_signature {
+	unsigned int            sig;
+	unsigned int            pf;
+	unsigned int            cksum;
+};
+
+struct extended_sigtable {
+	unsigned int            count;
+	unsigned int            cksum;
+	unsigned int            reserved[3];
+	struct extended_signature sigs[0];
+};

index 15cb82a..f3c5c93 100644
@@ -561,41 +561,6 @@ static inline void clear_in_cr4(unsigned long mask)
 	write_cr4(cr4);
 }
 
-struct microcode_header {
-	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		reserved[3];
-};
-
-struct microcode {
-	struct microcode_header	hdr;
-	unsigned int		bits[0];
-};
-
-typedef struct microcode	microcode_t;
-typedef struct microcode_header	microcode_header_t;
-
-/* microcode format is extended from prescott processors */
-struct extended_signature {
-	unsigned int		sig;
-	unsigned int		pf;
-	unsigned int		cksum;
-};
-
-struct extended_sigtable {
-	unsigned int		count;
-	unsigned int		cksum;
-	unsigned int		reserved[3];
-	struct extended_signature sigs[0];
-};
-
 typedef struct {
 	unsigned long		seg;
 } mm_segment_t;

index 56b9331..230ca7e 100644
@@ -93,6 +93,7 @@
 #include <asm/msr.h>
 #include <asm/uaccess.h>
 #include <asm/processor.h>
+#include <asm/microcode.h>
 
 MODULE_DESCRIPTION("Intel CPU (IA-32) Microcode Update Driver");
 MODULE_AUTHOR("Tigran Aivazian <[email protected]>");

new file mode 100644
index 0000000..5a05568
@@ -0,0 +1,34 @@
+struct microcode_header {
+	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            reserved[3];
+};
+
+struct microcode {
+	struct microcode_header hdr;
+	unsigned int            bits[0];
+};
+
+typedef struct microcode          microcode_t;
+typedef struct microcode_header   microcode_header_t;
+
+/* microcode format is extended from prescott processors */
+struct extended_signature {
+	unsigned int            sig;
+	unsigned int            pf;
+	unsigned int            cksum;
+};
+
+struct extended_sigtable {
+	unsigned int            count;
+	unsigned int            cksum;
+	unsigned int            reserved[3];
+	struct extended_signature sigs[0];
+};

index 15cb82a..f3c5c93 100644
@@ -561,41 +561,6 @@ static inline void clear_in_cr4(unsigned long mask)
 	write_cr4(cr4);
 }
 
-struct microcode_header {
-	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		reserved[3];
-};
-
-struct microcode {
-	struct microcode_header	hdr;
-	unsigned int		bits[0];
-};
-
-typedef struct microcode	microcode_t;
-typedef struct microcode_header	microcode_header_t;
-
-/* microcode format is extended from prescott processors */
-struct extended_signature {
-	unsigned int		sig;
-	unsigned int		pf;
-	unsigned int		cksum;
-};
-
-struct extended_sigtable {
-	unsigned int		count;
-	unsigned int		cksum;
-	unsigned int		reserved[3];
-	struct extended_signature sigs[0];
-};
-
 typedef struct {
 	unsigned long		seg;
 } mm_segment_t;

index 230ca7e..406261a 100644
@@ -102,17 +102,17 @@ MODULE_LICENSE("GPL");
 #define MICROCODE_VERSION 	"1.14a"
 
 #define DEFAULT_UCODE_DATASIZE 	(2000) 	  /* 2000 bytes */
-#define MC_HEADER_SIZE		(sizeof (microcode_header_t))  	  /* 48 bytes */
+#define MC_HEADER_SIZE		(sizeof (struct microcode_header))  	  /* 48 bytes */
 #define DEFAULT_UCODE_TOTALSIZE (DEFAULT_UCODE_DATASIZE + MC_HEADER_SIZE) /* 2048 bytes */
 #define EXT_HEADER_SIZE		(sizeof (struct extended_sigtable)) /* 20 bytes */
 #define EXT_SIGNATURE_SIZE	(sizeof (struct extended_signature)) /* 12 bytes */
 #define DWSIZE			(sizeof (u32))
 #define get_totalsize(mc) \
-	(((microcode_t *)mc)->hdr.totalsize ? \
-	 ((microcode_t *)mc)->hdr.totalsize : DEFAULT_UCODE_TOTALSIZE)
+	(((struct microcode *)mc)->hdr.totalsize ? \
+	 ((struct microcode *)mc)->hdr.totalsize : DEFAULT_UCODE_TOTALSIZE)
 #define get_datasize(mc) \
-	(((microcode_t *)mc)->hdr.datasize ? \
-	 ((microcode_t *)mc)->hdr.datasize : DEFAULT_UCODE_DATASIZE)
+	(((struct microcode *)mc)->hdr.datasize ? \
+	 ((struct microcode *)mc)->hdr.datasize : DEFAULT_UCODE_DATASIZE)
 
 #define sigmatch(s1, s2, p1, p2) \
 	(((s1) == (s2)) && (((p1) & (p2)) || (((p1) == 0) && ((p2) == 0))))

@@ -130,7 +130,7 @@ static struct ucode_cpu_info {
 	unsigned int sig;
 	unsigned int pf;
 	unsigned int rev;
-	microcode_t *mc;
+	struct microcode *mc;
 } ucode_cpu_info[NR_CPUS];
 
 static void collect_cpu_info(int cpu_num)

@@ -171,7 +171,7 @@ static void collect_cpu_info(int cpu_num)
 }
 
 static inline int microcode_update_match(int cpu_num,
-	microcode_header_t *mc_header, int sig, int pf)
+	struct microcode_header *mc_header, int sig, int pf)
 {
 	struct ucode_cpu_info *uci = ucode_cpu_info + cpu_num;
 

@@ -183,7 +183,7 @@ static inline int microcode_update_match(int cpu_num,
 
 static int microcode_sanity_check(void *mc)
 {
-	microcode_header_t *mc_header = mc;
+	struct microcode_header *mc_header = mc;
 	struct extended_sigtable *ext_header = NULL;
 	struct extended_signature *ext_sig;
 	unsigned long total_size, data_size, ext_table_size;

@@ -268,7 +268,7 @@ static int microcode_sanity_check(void *mc)
 static int get_maching_microcode(void *mc, int cpu)
 {
 	struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
-	microcode_header_t *mc_header = mc;
+	struct microcode_header *mc_header = mc;
 	struct extended_sigtable *ext_header;
 	unsigned long total_size = get_totalsize(mc_header);
 	int ext_sigcount, i;

@@ -355,7 +355,7 @@ static unsigned int user_buffer_size;	/* it's size */
 
 static long get_next_ucode(void **mc, long offset)
 {
-	microcode_header_t mc_header;
+	struct microcode_header mc_header;
 	unsigned long total_size;
 
 	/* No more data */

@@ -495,13 +495,13 @@ MODULE_ALIAS_MISCDEV(MICROCODE_MINOR);
 static long get_next_ucode_from_buffer(void **mc, const u8 *buf,
 	unsigned long size, long offset)
 {
-	microcode_header_t *mc_header;
+	struct microcode_header *mc_header;
 	unsigned long total_size;
 
 	/* No more data */
 	if (offset >= size)
 		return 0;
-	mc_header = (microcode_header_t *)(buf + offset);
+	mc_header = (struct microcode_header *)(buf + offset);
 	total_size = get_totalsize(mc_header);
 
 	if (offset + total_size > size) {

index 5a05568..1519ef0 100644
@@ -16,9 +16,6 @@ struct microcode {
 	unsigned int            bits[0];
 };
 
-typedef struct microcode          microcode_t;
-typedef struct microcode_header   microcode_header_t;
-
 /* microcode format is extended from prescott processors */
 struct extended_signature {
 	unsigned int            sig;

index 406261a..d3bc0e8 100644
@@ -125,13 +125,7 @@ static DEFINE_SPINLOCK(microcode_update_lock);
 /* no concurrent ->write()s are allowed on /dev/cpu/microcode */
 static DEFINE_MUTEX(microcode_mutex);
 
-static struct ucode_cpu_info {
-	int valid;
-	unsigned int sig;
-	unsigned int pf;
-	unsigned int rev;
-	struct microcode *mc;
-} ucode_cpu_info[NR_CPUS];
+static struct ucode_cpu_info ucode_cpu_info[NR_CPUS];
 
 static void collect_cpu_info(int cpu_num)
 {

index 1519ef0..d34a1fc 100644
@@ -29,3 +29,11 @@ struct extended_sigtable {
 	unsigned int            reserved[3];
 	struct extended_signature sigs[0];
 };
+
+struct ucode_cpu_info {
+	int valid;
+	unsigned int sig;
+	unsigned int pf;
+	unsigned int rev;
+	struct microcode *mc;
+};

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index a30c799..4754137 100644
@@ -100,17 +100,19 @@ MODULE_AUTHOR("Tigran Aivazian <[email protected]>");
 MODULE_LICENSE("GPL");
 
 #define DEFAULT_UCODE_DATASIZE 	(2000) 	  /* 2000 bytes */
-#define MC_HEADER_SIZE		(sizeof(struct microcode_header))  	  /* 48 bytes */
+#define MC_HEADER_SIZE		(sizeof(struct microcode_header_intel)) /* 48 bytes */
 #define DEFAULT_UCODE_TOTALSIZE (DEFAULT_UCODE_DATASIZE + MC_HEADER_SIZE) /* 2048 bytes */
 #define EXT_HEADER_SIZE		(sizeof(struct extended_sigtable)) /* 20 bytes */
 #define EXT_SIGNATURE_SIZE	(sizeof(struct extended_signature)) /* 12 bytes */
 #define DWSIZE			(sizeof(u32))
 #define get_totalsize(mc) \
-	(((struct microcode *)mc)->hdr.totalsize ? \
-	 ((struct microcode *)mc)->hdr.totalsize : DEFAULT_UCODE_TOTALSIZE)
+	(((struct microcode_intel *)mc)->hdr.totalsize ? \
+	 ((struct microcode_intel *)mc)->hdr.totalsize : \
+	 DEFAULT_UCODE_TOTALSIZE)
+
 #define get_datasize(mc) \
-	(((struct microcode *)mc)->hdr.datasize ? \
-	 ((struct microcode *)mc)->hdr.datasize : DEFAULT_UCODE_DATASIZE)
+	(((struct microcode_intel *)mc)->hdr.datasize ? \
+	 ((struct microcode_intel *)mc)->hdr.datasize : DEFAULT_UCODE_DATASIZE)
 
 #define sigmatch(s1, s2, p1, p2) \
 	(((s1) == (s2)) && (((p1) & (p2)) || (((p1) == 0) && ((p2) == 0))))

@@ -134,7 +136,7 @@ void collect_cpu_info(int cpu_num)
 	/* We should bind the task to the CPU */
 	BUG_ON(raw_smp_processor_id() != cpu_num);
 	uci->pf = uci->rev = 0;
-	uci->mc = NULL;
+	uci->mc.mc_intel = NULL;
 	uci->valid = 1;
 
 	if (c->x86_vendor != X86_VENDOR_INTEL || c->x86 < 6 ||

@@ -163,7 +165,7 @@ void collect_cpu_info(int cpu_num)
 }
 
 static inline int microcode_update_match(int cpu_num,
-	struct microcode_header *mc_header, int sig, int pf)
+	struct microcode_header_intel *mc_header, int sig, int pf)
 {
 	struct ucode_cpu_info *uci = ucode_cpu_info + cpu_num;
 

@@ -175,7 +177,7 @@ static inline int microcode_update_match(int cpu_num,
 
 int microcode_sanity_check(void *mc)
 {
-	struct microcode_header *mc_header = mc;
+	struct microcode_header_intel *mc_header = mc;
 	struct extended_sigtable *ext_header = NULL;
 	struct extended_signature *ext_sig;
 	unsigned long total_size, data_size, ext_table_size;

@@ -260,7 +262,7 @@ int microcode_sanity_check(void *mc)
 int get_matching_microcode(void *mc, int cpu)
 {
 	struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
-	struct microcode_header *mc_header = mc;
+	struct microcode_header_intel *mc_header = mc;
 	struct extended_sigtable *ext_header;
 	unsigned long total_size = get_totalsize(mc_header);
 	int ext_sigcount, i;

@@ -294,10 +296,10 @@ find:
 	}
 
 	/* free previous update file */
-	vfree(uci->mc);
+	vfree(uci->mc.mc_intel);
 
 	memcpy(new_mc, mc, total_size);
-	uci->mc = new_mc;
+	uci->mc.mc_intel = new_mc;
 	return 1;
 }
 

@@ -311,7 +313,7 @@ void apply_microcode(int cpu)
 	/* We should bind the task to the CPU */
 	BUG_ON(cpu_num != cpu);
 
-	if (uci->mc == NULL)
+	if (uci->mc.mc_intel == NULL)
 		return;
 
 	/* serialize access to the physical write to MSR 0x79 */

@@ -319,8 +321,8 @@ void apply_microcode(int cpu)
 
 	/* write microcode via MSR 0x79 */
 	wrmsr(MSR_IA32_UCODE_WRITE,
-		(unsigned long) uci->mc->bits,
-		(unsigned long) uci->mc->bits >> 16 >> 16);
+	      (unsigned long) uci->mc.mc_intel->bits,
+	      (unsigned long) uci->mc.mc_intel->bits >> 16 >> 16);
 	wrmsr(MSR_IA32_UCODE_REV, 0, 0);
 
 	/* see notes above for revision 1.07.  Apparent chip bug */

@@ -330,14 +332,14 @@ void apply_microcode(int cpu)
 	rdmsr(MSR_IA32_UCODE_REV, val[0], val[1]);
 
 	spin_unlock_irqrestore(&microcode_update_lock, flags);
-	if (val[1] != uci->mc->hdr.rev) {
+	if (val[1] != uci->mc.mc_intel->hdr.rev) {
 		printk(KERN_ERR "microcode: CPU%d update from revision "
 			"0x%x to 0x%x failed\n", cpu_num, uci->rev, val[1]);
 		return;
 	}
 	printk(KERN_INFO "microcode: CPU%d updated from revision "
 	       "0x%x to 0x%x, date = %08x \n",
-	       cpu_num, uci->rev, val[1], uci->mc->hdr.date);
+	       cpu_num, uci->rev, val[1], uci->mc.mc_intel->hdr.date);
 	uci->rev = val[1];
 }
 

@@ -347,7 +349,7 @@ extern unsigned int user_buffer_size;   /* it's size */
 
 long get_next_ucode(void **mc, long offset)
 {
-	struct microcode_header mc_header;
+	struct microcode_header_intel mc_header;
 	unsigned long total_size;
 
 	/* No more data */

@@ -378,13 +380,13 @@ long get_next_ucode(void **mc, long offset)
 static long get_next_ucode_from_buffer(void **mc, const u8 *buf,
 	unsigned long size, long offset)
 {
-	struct microcode_header *mc_header;
+	struct microcode_header_intel *mc_header;
 	unsigned long total_size;
 
 	/* No more data */
 	if (offset >= size)
 		return 0;
-	mc_header = (struct microcode_header *)(buf + offset);
+	mc_header = (struct microcode_header_intel *)(buf + offset);
 	total_size = get_totalsize(mc_header);
 
 	if (offset + total_size > size) {

@@ -462,7 +464,7 @@ int apply_microcode_check_cpu(int cpu)
 	int err = 0;
 
 	/* Check if the microcode is available */
-	if (!uci->mc)
+	if (!uci->mc.mc_intel)
 		return 0;
 
 	old = current->cpus_allowed;

@@ -507,7 +509,7 @@ void microcode_fini_cpu(int cpu)
 
 	mutex_lock(&microcode_mutex);
 	uci->valid = 0;
-	kfree(uci->mc);
-	uci->mc = NULL;
+	kfree(uci->mc.mc_intel);
+	uci->mc.mc_intel = NULL;
 	mutex_unlock(&microcode_mutex);
 }

index d34a1fc..ef77c6f 100644
@@ -1,4 +1,4 @@
-struct microcode_header {
+struct microcode_header_intel {
 	unsigned int            hdrver;
 	unsigned int            rev;
 	unsigned int            date;

@@ -11,8 +11,8 @@ struct microcode_header {
 	unsigned int            reserved[3];
 };
 
-struct microcode {
-	struct microcode_header hdr;
+struct microcode_intel {
+	struct microcode_header_intel hdr;
 	unsigned int            bits[0];
 };
 

@@ -35,5 +35,7 @@ struct ucode_cpu_info {
 	unsigned int sig;
 	unsigned int pf;
 	unsigned int rev;
-	struct microcode *mc;
+	union {
+		struct microcode_intel *mc_intel;
+	} mc;
 };

index ef77c6f..4e94172 100644
@@ -30,6 +30,35 @@ struct extended_sigtable {
 	struct extended_signature sigs[0];
 };
 
+struct equiv_cpu_entry {
+	unsigned int installed_cpu;
+	unsigned int fixed_errata_mask;
+	unsigned int fixed_errata_compare;
+	unsigned int equiv_cpu;
+};
+
+struct microcode_header_amd {
+	unsigned int  data_code;
+	unsigned int  patch_id;
+	unsigned char mc_patch_data_id[2];
+	unsigned char mc_patch_data_len;
+	unsigned char init_flag;
+	unsigned int  mc_patch_data_checksum;
+	unsigned int  nb_dev_id;
+	unsigned int  sb_dev_id;
+	unsigned char processor_rev_id[2];
+	unsigned char nb_rev_id;
+	unsigned char sb_rev_id;
+	unsigned char bios_api_rev;
+	unsigned char reserved1[3];
+	unsigned int  match_reg[8];
+};
+
+struct microcode_amd {
+	struct microcode_header_amd hdr;
+	unsigned int mpb[0];
+};
+
 struct ucode_cpu_info {
 	int valid;
 	unsigned int sig;

@@ -37,5 +66,6 @@ struct ucode_cpu_info {
 	unsigned int rev;
 	union {
 		struct microcode_intel *mc_intel;
+		struct microcode_amd *mc_amd;
 	} mc;
 };

index 4e94172..9231c87 100644
@@ -1,3 +1,16 @@
+struct microcode_ops {
+	long (*get_next_ucode)(void **mc, long offset);
+	long (*microcode_get_next_ucode)(void **mc, long offset);
+	int (*get_matching_microcode)(void *mc, int cpu);
+	int (*apply_microcode_check_cpu)(int cpu);
+	int (*microcode_sanity_check)(void *mc);
+	int (*cpu_request_microcode)(int cpu);
+	void (*collect_cpu_info)(int cpu_num);
+	void (*apply_microcode)(int cpu);
+	void (*microcode_fini_cpu)(int cpu);
+	void (*clear_patch)(void *data);
+};
+
 struct microcode_header_intel {
 	unsigned int            hdrver;
 	unsigned int            rev;

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