* This driver allows to upgrade microcode on AMD
* family 0x10 and 0x11 processors.
*
- * Licensed unter the terms of the GNU General Public
+ * Licensed under the terms of the GNU General Public
* License version 2. See file COPYING for details.
*/
#include <linux/platform_device.h>
#include <linux/pci.h>
#include <linux/pci_ids.h>
+#include <linux/uaccess.h>
#include <asm/msr.h>
-#include <asm/uaccess.h>
#include <asm/processor.h>
#include <asm/microcode.h>
#define UCODE_UCODE_TYPE 0x00000001
struct equiv_cpu_entry {
- unsigned int installed_cpu;
- unsigned int fixed_errata_mask;
- unsigned int fixed_errata_compare;
- unsigned int equiv_cpu;
-};
+ u32 installed_cpu;
+ u32 fixed_errata_mask;
+ u32 fixed_errata_compare;
+ u16 equiv_cpu;
+ u16 res;
+} __attribute__((packed));
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];
-};
+ 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];
};
-#define UCODE_MAX_SIZE (2048)
-#define DEFAULT_UCODE_DATASIZE (896)
-#define MC_HEADER_SIZE (sizeof(struct microcode_header_amd))
-#define DEFAULT_UCODE_TOTALSIZE (DEFAULT_UCODE_DATASIZE + MC_HEADER_SIZE)
-#define DWSIZE (sizeof(u32))
-/* For now we support a fixed ucode total size only */
-#define get_totalsize(mc) \
- ((((struct microcode_amd *)mc)->hdr.mc_patch_data_len * 28) \
- + MC_HEADER_SIZE)
+#define UCODE_MAX_SIZE 2048
+#define UCODE_CONTAINER_SECTION_HDR 8
+#define UCODE_CONTAINER_HEADER_SIZE 12
/* serialize access to the physical write */
static DEFINE_SPINLOCK(microcode_update_lock);
static int collect_cpu_info_amd(int cpu, struct cpu_signature *csig)
{
struct cpuinfo_x86 *c = &cpu_data(cpu);
+ u32 dummy;
memset(csig, 0, sizeof(*csig));
-
if (c->x86_vendor != X86_VENDOR_AMD || c->x86 < 0x10) {
- printk(KERN_ERR "microcode: CPU%d not a capable AMD processor\n",
- cpu);
+ printk(KERN_WARNING "microcode: CPU%d: AMD CPU family 0x%x not "
+ "supported\n", cpu, c->x86);
return -1;
}
-
- asm volatile("movl %1, %%ecx; rdmsr"
- : "=a" (csig->rev)
- : "i" (0x0000008B) : "ecx");
-
- printk(KERN_INFO "microcode: collect_cpu_info_amd : patch_id=0x%x\n",
- csig->rev);
-
+ rdmsr(MSR_AMD64_PATCH_LEVEL, csig->rev, dummy);
+ printk(KERN_INFO "microcode: CPU%d: patch_level=0x%x\n", cpu, csig->rev);
return 0;
}
static int get_matching_microcode(int cpu, void *mc, int rev)
{
struct microcode_header_amd *mc_header = mc;
- struct pci_dev *nb_pci_dev, *sb_pci_dev;
unsigned int current_cpu_id;
- unsigned int equiv_cpu_id = 0x00;
+ u16 equiv_cpu_id = 0;
unsigned int i = 0;
BUG_ON(equiv_cpu_table == NULL);
}
if (!equiv_cpu_id) {
- printk(KERN_ERR "microcode: CPU%d cpu_id "
- "not found in equivalent cpu table \n", cpu);
+ printk(KERN_WARNING "microcode: CPU%d: cpu revision "
+ "not listed in equivalent cpu table\n", cpu);
return 0;
}
- if ((mc_header->processor_rev_id[0]) != (equiv_cpu_id & 0xff)) {
- printk(KERN_ERR
- "microcode: CPU%d patch does not match "
- "(patch is %x, cpu extended is %x) \n",
- cpu, mc_header->processor_rev_id[0],
- (equiv_cpu_id & 0xff));
+ if (mc_header->processor_rev_id != equiv_cpu_id) {
+ printk(KERN_ERR "microcode: CPU%d: patch mismatch "
+ "(processor_rev_id: %x, equiv_cpu_id: %x)\n",
+ cpu, mc_header->processor_rev_id, equiv_cpu_id);
return 0;
}
- if ((mc_header->processor_rev_id[1]) != ((equiv_cpu_id >> 16) & 0xff)) {
- printk(KERN_ERR "microcode: CPU%d patch does not match "
- "(patch is %x, cpu base id is %x) \n",
- cpu, mc_header->processor_rev_id[1],
- ((equiv_cpu_id >> 16) & 0xff));
-
+ /* ucode might be chipset specific -- currently we don't support this */
+ if (mc_header->nb_dev_id || mc_header->sb_dev_id) {
+ printk(KERN_ERR "microcode: CPU%d: loading of chipset "
+ "specific code not yet supported\n", cpu);
return 0;
}
- /* ucode may be northbridge specific */
- if (mc_header->nb_dev_id) {
- nb_pci_dev = pci_get_device(PCI_VENDOR_ID_AMD,
- (mc_header->nb_dev_id & 0xff),
- NULL);
- if ((!nb_pci_dev) ||
- (mc_header->nb_rev_id != nb_pci_dev->revision)) {
- printk(KERN_ERR "microcode: CPU%d NB mismatch \n", cpu);
- pci_dev_put(nb_pci_dev);
- return 0;
- }
- pci_dev_put(nb_pci_dev);
- }
-
- /* ucode may be southbridge specific */
- if (mc_header->sb_dev_id) {
- sb_pci_dev = pci_get_device(PCI_VENDOR_ID_AMD,
- (mc_header->sb_dev_id & 0xff),
- NULL);
- if ((!sb_pci_dev) ||
- (mc_header->sb_rev_id != sb_pci_dev->revision)) {
- printk(KERN_ERR "microcode: CPU%d SB mismatch \n", cpu);
- pci_dev_put(sb_pci_dev);
- return 0;
- }
- pci_dev_put(sb_pci_dev);
- }
-
if (mc_header->patch_id <= rev)
return 0;
static void apply_microcode_amd(int cpu)
{
unsigned long flags;
- unsigned int eax, edx;
- unsigned int rev;
+ u32 rev, dummy;
int cpu_num = raw_smp_processor_id();
struct ucode_cpu_info *uci = ucode_cpu_info + cpu_num;
struct microcode_amd *mc_amd = uci->mc;
- unsigned long addr;
/* We should bind the task to the CPU */
BUG_ON(cpu_num != cpu);
return;
spin_lock_irqsave(µcode_update_lock, flags);
-
- addr = (unsigned long)&mc_amd->hdr.data_code;
- edx = (unsigned int)(((unsigned long)upper_32_bits(addr)));
- eax = (unsigned int)(((unsigned long)lower_32_bits(addr)));
-
- asm volatile("movl %0, %%ecx; wrmsr" :
- : "i" (0xc0010020), "a" (eax), "d" (edx) : "ecx");
-
+ wrmsrl(MSR_AMD64_PATCH_LOADER, (u64)(long)&mc_amd->hdr.data_code);
/* get patch id after patching */
- asm volatile("movl %1, %%ecx; rdmsr"
- : "=a" (rev)
- : "i" (0x0000008B) : "ecx");
-
+ rdmsr(MSR_AMD64_PATCH_LEVEL, rev, dummy);
spin_unlock_irqrestore(µcode_update_lock, flags);
/* check current patch id and patch's id for match */
if (rev != mc_amd->hdr.patch_id) {
- printk(KERN_ERR "microcode: CPU%d update from revision "
- "0x%x to 0x%x failed\n", cpu_num,
- mc_amd->hdr.patch_id, rev);
+ printk(KERN_ERR "microcode: CPU%d: update failed "
+ "(for patch_level=0x%x)\n", cpu, mc_amd->hdr.patch_id);
return;
}
- printk(KERN_INFO "microcode: CPU%d updated from revision "
- "0x%x to 0x%x \n",
- cpu_num, uci->cpu_sig.rev, mc_amd->hdr.patch_id);
+ printk(KERN_INFO "microcode: CPU%d: updated (new patch_level=0x%x)\n",
+ cpu, rev);
uci->cpu_sig.rev = rev;
}
-static void * get_next_ucode(u8 *buf, unsigned int size,
- int (*get_ucode_data)(void *, const void *, size_t),
- unsigned int *mc_size)
+static int get_ucode_data(void *to, const u8 *from, size_t n)
+{
+ memcpy(to, from, n);
+ return 0;
+}
+
+static void *get_next_ucode(const u8 *buf, unsigned int size,
+ unsigned int *mc_size)
{
unsigned int total_size;
-#define UCODE_CONTAINER_SECTION_HDR 8
u8 section_hdr[UCODE_CONTAINER_SECTION_HDR];
void *mc;
return NULL;
if (section_hdr[0] != UCODE_UCODE_TYPE) {
- printk(KERN_ERR "microcode: error! "
- "Wrong microcode payload type field\n");
+ printk(KERN_ERR "microcode: error: invalid type field in "
+ "container file section header\n");
return NULL;
}
total_size = (unsigned long) (section_hdr[4] + (section_hdr[5] << 8));
- printk(KERN_INFO "microcode: size %u, total_size %u\n",
- size, total_size);
+ printk(KERN_DEBUG "microcode: size %u, total_size %u\n",
+ size, total_size);
if (total_size > size || total_size > UCODE_MAX_SIZE) {
- printk(KERN_ERR "microcode: error! Bad data in microcode data file\n");
+ printk(KERN_ERR "microcode: error: size mismatch\n");
return NULL;
}
mc = vmalloc(UCODE_MAX_SIZE);
if (mc) {
memset(mc, 0, UCODE_MAX_SIZE);
- if (get_ucode_data(mc, buf + UCODE_CONTAINER_SECTION_HDR, total_size)) {
+ if (get_ucode_data(mc, buf + UCODE_CONTAINER_SECTION_HDR,
+ total_size)) {
vfree(mc);
mc = NULL;
} else
*mc_size = total_size + UCODE_CONTAINER_SECTION_HDR;
}
-#undef UCODE_CONTAINER_SECTION_HDR
return mc;
}
-static int install_equiv_cpu_table(u8 *buf,
- int (*get_ucode_data)(void *, const void *, size_t))
+static int install_equiv_cpu_table(const u8 *buf)
{
-#define UCODE_CONTAINER_HEADER_SIZE 12
u8 *container_hdr[UCODE_CONTAINER_HEADER_SIZE];
unsigned int *buf_pos = (unsigned int *)container_hdr;
unsigned long size;
size = buf_pos[2];
if (buf_pos[1] != UCODE_EQUIV_CPU_TABLE_TYPE || !size) {
- printk(KERN_ERR "microcode: error! "
- "Wrong microcode equivalnet cpu table\n");
+ printk(KERN_ERR "microcode: error: invalid type field in "
+ "container file section header\n");
return 0;
}
equiv_cpu_table = (struct equiv_cpu_entry *) vmalloc(size);
if (!equiv_cpu_table) {
- printk(KERN_ERR "microcode: error, can't allocate memory for equiv CPU table\n");
+ printk(KERN_ERR "microcode: failed to allocate "
+ "equivalent CPU table\n");
return 0;
}
}
return size + UCODE_CONTAINER_HEADER_SIZE; /* add header length */
-#undef UCODE_CONTAINER_HEADER_SIZE
}
static void free_equiv_cpu_table(void)
}
}
-static int generic_load_microcode(int cpu, void *data, size_t size,
- int (*get_ucode_data)(void *, const void *, size_t))
+static int generic_load_microcode(int cpu, const u8 *data, size_t size)
{
struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
- u8 *ucode_ptr = data, *new_mc = NULL, *mc;
+ const u8 *ucode_ptr = data;
+ void *new_mc = NULL;
+ void *mc;
int new_rev = uci->cpu_sig.rev;
unsigned int leftover;
unsigned long offset;
- offset = install_equiv_cpu_table(ucode_ptr, get_ucode_data);
+ offset = install_equiv_cpu_table(ucode_ptr);
if (!offset) {
- printk(KERN_ERR "microcode: installing equivalent cpu table failed\n");
+ printk(KERN_ERR "microcode: failed to create "
+ "equivalent cpu table\n");
return -EINVAL;
}
unsigned int uninitialized_var(mc_size);
struct microcode_header_amd *mc_header;
- mc = get_next_ucode(ucode_ptr, leftover, get_ucode_data, &mc_size);
+ mc = get_next_ucode(ucode_ptr, leftover, &mc_size);
if (!mc)
break;
vfree(new_mc);
new_rev = mc_header->patch_id;
new_mc = mc;
- } else
+ } else
vfree(mc);
ucode_ptr += mc_size;
if (uci->mc)
vfree(uci->mc);
uci->mc = new_mc;
- pr_debug("microcode: CPU%d found a matching microcode update with"
- " version 0x%x (current=0x%x)\n",
- cpu, new_rev, uci->cpu_sig.rev);
+ pr_debug("microcode: CPU%d found a matching microcode "
+ "update with version 0x%x (current=0x%x)\n",
+ cpu, new_rev, uci->cpu_sig.rev);
} else
vfree(new_mc);
}
return (int)leftover;
}
-static int get_ucode_fw(void *to, const void *from, size_t n)
-{
- memcpy(to, from, n);
- return 0;
-}
-
static int request_microcode_fw(int cpu, struct device *device)
{
const char *fw_name = "amd-ucode/microcode_amd.bin";
ret = request_firmware(&firmware, fw_name, device);
if (ret) {
- printk(KERN_ERR "microcode: ucode data file %s load failed\n", fw_name);
+ printk(KERN_ERR "microcode: failed to load file %s\n", fw_name);
return ret;
}
- ret = generic_load_microcode(cpu, (void*)firmware->data, firmware->size,
- &get_ucode_fw);
+ ret = generic_load_microcode(cpu, firmware->data, firmware->size);
release_firmware(firmware);
static int request_microcode_user(int cpu, const void __user *buf, size_t size)
{
- printk(KERN_WARNING "microcode: AMD microcode update via /dev/cpu/microcode"
- "is not supported\n");
+ printk(KERN_INFO "microcode: AMD microcode update via "
+ "/dev/cpu/microcode not supported\n");
return -1;
}
{
return µcode_amd_ops;
}
+
git.openpandora.org / pandora-kernel.git / blobdiff