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authorAaron Durbin <adurbin@chromium.org>2017-04-25 21:58:10 -0500
committerAaron Durbin <adurbin@chromium.org>2017-04-28 15:56:49 +0200
commita3cecb2e7116fc80d297db97f2cd7175a4e038fb (patch)
treeca44463b15cc20a53dac8c494f44ce7c1251ad90 /Documentation
parent3d966255a446c2a0da108b55b33d163fe4d0020f (diff)
drivers/intel/fsp2_0: add option to incorporate platform memory version
On Chrome OS systems a memory setting change is needed to be deployed without updating the FSP blob proper. Under such conditions one needs to trigger retrain of the memory. For ease of use provide an option, FSP_PLATFORM_MEMORY_SETTINGS_VERSIONS, which incorproates the SoC and mainboard memory setting version number into the FSP version passed to the platform. The lower 8 bits of the FSP version are the build number which in practice is normally 0. Use those 8 bits to include the SoC and mainboard memory settings version. When FSP, SoC, or mainboard memory setting number is bumped a retrain will be triggered. BUG=b:37687843 Change-Id: I6a269dcf654be7a409045cedeea3f82eb641f1d6 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/19452 Reviewed-by: Furquan Shaikh <furquan@google.com> Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
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