diff options
Diffstat (limited to 'arch/x86/cpu/ivybridge/microcode_intel.c')
| -rw-r--r-- | arch/x86/cpu/ivybridge/microcode_intel.c | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/arch/x86/cpu/ivybridge/microcode_intel.c b/arch/x86/cpu/ivybridge/microcode_intel.c index 08177510ab..2440a97c48 100644 --- a/arch/x86/cpu/ivybridge/microcode_intel.c +++ b/arch/x86/cpu/ivybridge/microcode_intel.c @@ -13,7 +13,9 @@ #include <libfdt.h> #include <asm/cpu.h> #include <asm/msr.h> +#include <asm/msr-index.h> #include <asm/processor.h> +#include <asm/arch/microcode.h> /** * struct microcode_update - standard microcode header from Intel @@ -40,8 +42,8 @@ static int microcode_decode_node(const void *blob, int node, update->data = fdt_getprop(blob, node, "data", &update->size); if (!update->data) return -EINVAL; - update->data += 48; - update->size -= 48; + update->data += UCODE_HEADER_LEN; + update->size -= UCODE_HEADER_LEN; update->header_version = fdtdec_get_int(blob, node, "intel,header-version", 0); @@ -71,15 +73,16 @@ static inline uint32_t microcode_read_rev(void) asm volatile ( "xorl %%eax, %%eax\n" "xorl %%edx, %%edx\n" - "movl $0x8b, %%ecx\n" + "movl %2, %%ecx\n" "wrmsr\n" "movl $0x01, %%eax\n" "cpuid\n" - "movl $0x8b, %%ecx\n" + "movl %2, %%ecx\n" "rdmsr\n" : /* outputs */ "=a" (low), "=d" (high) : /* inputs */ + "i" (MSR_IA32_UCODE_REV) : /* clobbers */ "ebx", "ecx" ); @@ -94,9 +97,9 @@ static void microcode_read_cpu(struct microcode_update *cpu) struct cpuid_result result; uint32_t low, high; - wrmsr(0x8b, 0, 0); + wrmsr(MSR_IA32_UCODE_REV, 0, 0); result = cpuid(1); - rdmsr(0x8b, low, cpu->update_revision); + rdmsr(MSR_IA32_UCODE_REV, low, cpu->update_revision); x86_model = (result.eax >> 4) & 0x0f; x86_family = (result.eax >> 8) & 0x0f; cpu->processor_signature = result.eax; @@ -120,6 +123,7 @@ int microcode_update_intel(void) int count; int node; int ret; + int rev; microcode_read_cpu(&cpu); node = 0; @@ -147,12 +151,16 @@ int microcode_update_intel(void) skipped++; continue; } - ret = microcode_read_rev(); - wrmsr(0x79, (ulong)update.data, 0); + wrmsr(MSR_IA32_UCODE_WRITE, (ulong)update.data, 0); + rev = microcode_read_rev(); debug("microcode: updated to revision 0x%x date=%04x-%02x-%02x\n", - microcode_read_rev(), update.date_code & 0xffff, + rev, update.date_code & 0xffff, (update.date_code >> 24) & 0xff, (update.date_code >> 16) & 0xff); + if (update.update_revision != rev) { + printf("Microcode update failed\n"); + return -EFAULT; + } count++; } while (1); } |
