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Intel CPUs: execute microcode update only once per core

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Early HT-enabled CPUs do not serialize microcode updates within a core.
Solve this by running microcode updates on the thread with the smallest
lapic ID of a core only.

Also set MTRRs once per core only.

Change-Id: I6a3cc9ecec2d8e0caed29605a9b19ec35a817620
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/1142
Tested-by: build bot (Jenkins)
Reviewed-by: Sven Schnelle <svens@stackframe.org>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Kyösti Mälkki
2012-06-27 16:14:49 +03:00
committed by Sven Schnelle
parent ac6e3172ff
commit 9ed1456eff
5 changed files with 46 additions and 12 deletions
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1
src/include/cpu/intel/hyperthreading.h
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@ -3,5 +3,6 @@
struct device;
void intel_sibling_init(struct device *cpu);
int intel_ht_sibling(void);
#endif /* CPU_INTEL_HYPERTHREADING_H */