diff options
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/cpu/ivybridge/microcode_intel.c | 25 |
1 files changed, 15 insertions, 10 deletions
diff --git a/arch/x86/cpu/ivybridge/microcode_intel.c b/arch/x86/cpu/ivybridge/microcode_intel.c index 79c075f..0817751 100644 --- a/arch/x86/cpu/ivybridge/microcode_intel.c +++ b/arch/x86/cpu/ivybridge/microcode_intel.c @@ -50,17 +50,17 @@ static int microcode_decode_node(const void *blob, int node, update->date_code = fdtdec_get_int(blob, node, "intel,date-code", 0); update->processor_signature = fdtdec_get_int(blob, node, - "intel.processor-signature", 0); + "intel,processor-signature", 0); update->checksum = fdtdec_get_int(blob, node, "intel,checksum", 0); update->loader_revision = fdtdec_get_int(blob, node, - "loader-revision", 0); + "intel,loader-revision", 0); update->processor_flags = fdtdec_get_int(blob, node, - "processor-flags", 0); + "intel,processor-flags", 0); return 0; } -static uint32_t microcode_read_rev(void) +static inline uint32_t microcode_read_rev(void) { /* * Some Intel CPUs can be very finicky about the CPUID sequence used. @@ -116,6 +116,7 @@ int microcode_update_intel(void) { struct microcode_update cpu, update; const void *blob = gd->fdt_blob; + int skipped; int count; int node; int ret; @@ -123,12 +124,13 @@ int microcode_update_intel(void) microcode_read_cpu(&cpu); node = 0; count = 0; + skipped = 0; do { node = fdtdec_next_compatible(blob, node, COMPAT_INTEL_MICROCODE); if (node < 0) { debug("%s: Found %d updates\n", __func__, count); - return count ? 0 : -ENOENT; + return count ? 0 : skipped ? -EEXIST : -ENOENT; } ret = microcode_decode_node(blob, node, &update); @@ -137,12 +139,15 @@ int microcode_update_intel(void) ret); return ret; } - if (update.processor_signature == cpu.processor_signature && - (update.processor_flags & cpu.processor_flags)) { - debug("%s: Update already exists\n", __func__); - return -EEXIST; + if (!(update.processor_signature == cpu.processor_signature && + (update.processor_flags & cpu.processor_flags))) { + debug("%s: Skipping non-matching update, sig=%x, pf=%x\n", + __func__, update.processor_signature, + update.processor_flags); + skipped++; + continue; } - + ret = microcode_read_rev(); wrmsr(0x79, (ulong)update.data, 0); debug("microcode: updated to revision 0x%x date=%04x-%02x-%02x\n", microcode_read_rev(), update.date_code & 0xffff, |