diff options
| author | Arthur Heymans <arthur@aheymans.xyz> | 2021-01-22 19:05:16 +0100 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2021-02-01 08:51:15 +0000 |
| commit | 9daf5f071ca456348e658be409a07dd194259d2e (patch) | |
| tree | 22f760f0a5b232d5938e0c781555d0055029bdd9 /src | |
| parent | 4330b961c472e359475bd17d56088c16e4a175b8 (diff) | |
cpu/intel/microcode: Reuse existing function to read MCU revision
Change-Id: If198fa68c0a29f46906151e667d7b00e2a3ab00d
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49839
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/cpu/intel/microcode/microcode.c | 14 |
1 files changed, 4 insertions, 10 deletions
diff --git a/src/cpu/intel/microcode/microcode.c b/src/cpu/intel/microcode/microcode.c index 9d6d28b3e6..86739909c7 100644 --- a/src/cpu/intel/microcode/microcode.c +++ b/src/cpu/intel/microcode/microcode.c @@ -123,8 +123,8 @@ const void *intel_microcode_find(void) size_t microcode_len; u32 eax; u32 pf, rev, sig, update_size; - unsigned int x86_model, x86_family; msr_t msr; + struct cpuinfo_x86 c; if (ucode_updates) return ucode_updates; @@ -133,19 +133,13 @@ const void *intel_microcode_find(void) if (ucode_updates == NULL) return NULL; - /* CPUID sets MSR 0x8B if a microcode update has been loaded. */ - msr.lo = 0; - msr.hi = 0; - wrmsr(IA32_BIOS_SIGN_ID, msr); + rev = read_microcode_rev(); eax = cpuid_eax(1); - msr = rdmsr(IA32_BIOS_SIGN_ID); - rev = msr.hi; - x86_model = (eax >> 4) & 0x0f; - x86_family = (eax >> 8) & 0x0f; + get_fms(&c, eax); sig = eax; pf = 0; - if ((x86_model >= 5) || (x86_family > 6)) { + if ((c.x86_model >= 5) || (c.x86 > 6)) { msr = rdmsr(IA32_PLATFORM_ID); pf = 1 << ((msr.hi >> 18) & 7); } |