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authorLijian Zhao <lijian.zhao@intel.com>2019-03-27 17:06:41 -0700
committerDuncan Laurie <dlaurie@chromium.org>2019-03-28 02:47:26 +0000
commit68890b9d59d0f87533d3eacb6de1d552dcb72679 (patch)
tree2b99cf49e67ad8c8f93cb9d84d5ea52a53cd410e /util/fuzz-tests/jpeg-test.c
parent39f9fbc57aeb60e65ec42d370d7ab76c0a4584d6 (diff)
soc/intel/cannonlake: Update CPU Ratio base on MSR
The following is the FSP logic: as long as the Cpu Ratio input in coreboot is different with CpuStrapSet, system will force to follow input from coreboot. But CpuStrapsetting is floating, it will be 0 from the first cold boot before memory training and set to 0x1c (or max CPU ratio for the installed CPU) after first memory training. The previous fix was attempting to ensure settings were cleared when FSP was called in recovery mode, but only when coming from S5 which caused issues if recovery mode is requested by the OS and is only followed by a warm reset. BUG=b:129412691 TEST=Boot up sarien platform and force recovery, check there's no reset in the path of recovery. Signed-off-by: Lijian Zhao <lijian.zhao@intel.com> Change-Id: I959188be46343bc6f2cb3cc149097b4d449802aa Reviewed-on: https://review.coreboot.org/c/coreboot/+/32089 Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Duncan Laurie <dlaurie@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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