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authorAngel Pons <th3fanbus@gmail.com>2022-09-11 14:56:26 +0200
committerMartin Roth <martin.roth@amd.corp-partner.google.com>2022-09-20 07:52:59 +0000
commit84d0fe5113e73d02fd076449c608dd8ee218aac7 (patch)
treec945b8d4a6d7fd71246ed3acbf5f36bd4d0c8ef2 /util/nixshell
parent1caa27932585d809fb3c76384ac32b632db5fdec (diff)
cpu/intel/haswell: Hook up Crystal Well µcode updates
Commit 27126f135dad3c0e2f91394e7088b2ff50220146 (cpu/intel/haswell: add Crystal Well CPU IDs) introduced new Haswell CPUIDs but did not include any µcode updates for them. It is unknown how this could have worked as the initial µcode inside the CPU can be quite unstable. Intel CPUs with support for FIT (Firmware Interface Table) can have their µcode updated before the x86 reset vector is executed. The µcode updates for Crystal Well CPUID 0x40661 can be found inside the intel-microcode submodule. There are no publicly available µcode updates for Crystal Well CPUID 0x40660 as it is a pre-production stepping, which is not meant to be used anymore. Hook up the available µcode updates for Crystal Well CPUs. Change-Id: If5264f333e681171a2ca4a68be155ffd40a1043b Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/67525 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>
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