arch/x86/cpu: introduce and use device_match_mask
Instead of always doing exact matches between the CPUID read in
identify_cpu and the device entries of the CPU device ID table,
offer the possibility to use a bit mask in the CPUID matching. This
allows covering all steppings of a CPU family/model with one entry and
avoids that case of a missing new stepping causing the CPUs not being
properly initialized.
Some of the CPU device ID tables can now be deduplicated using the
CPUID_ALL_STEPPINGS_MASK define, but that's outside of the scope of this
patch.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I0540b514ca42591c0d3468307a82b5612585f614
Reviewed-on: https://review.coreboot.org/c/coreboot/+/72847
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
diff --git a/src/soc/amd/stoneyridge/cpu.c b/src/soc/amd/stoneyridge/cpu.c
index 8e44ede..a40b54b 100644
--- a/src/soc/amd/stoneyridge/cpu.c
+++ b/src/soc/amd/stoneyridge/cpu.c
@@ -60,9 +60,9 @@
};
static struct cpu_device_id cpu_table[] = {
- { X86_VENDOR_AMD, 0x660f01 },
- { X86_VENDOR_AMD, 0x670f00 },
- { 0, 0 },
+ { X86_VENDOR_AMD, 0x660f01, CPUID_EXACT_MATCH_MASK },
+ { X86_VENDOR_AMD, 0x670f00, CPUID_EXACT_MATCH_MASK },
+ { 0, 0, 0 },
};
static const struct cpu_driver model_15 __cpu_driver = {