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>
This commit is contained in:
Felix Held
2023-02-06 15:19:11 +01:00
parent 2fe5d3e5a5
commit 6a6ac1e0b9
32 changed files with 223 additions and 202 deletions

View File

@@ -58,9 +58,9 @@ static struct device_operations cpu_dev_ops = {
};
static const struct cpu_device_id cpu_table[] = {
{ X86_VENDOR_AMD, 0x730F00 },
{ X86_VENDOR_AMD, 0x730F01 },
{ 0, 0 },
{ X86_VENDOR_AMD, 0x730F00, CPUID_EXACT_MATCH_MASK },
{ X86_VENDOR_AMD, 0x730F01, CPUID_EXACT_MATCH_MASK },
{ 0, 0, 0 },
};
static const struct cpu_driver model_16 __cpu_driver = {