[coreboot-gerrit] Patch merged into coreboot/master: 542307b broadwell: Add small delay before Flex Ratio reboot

gerrit at coreboot.org gerrit at coreboot.org
Fri Mar 27 05:51:33 CET 2015


the following patch was just integrated into master:
commit 542307b8153dc773013f8be29251d9b8be8d13b8
Author: Duncan Laurie <dlaurie at chromium.org>
Date:   Mon Aug 11 13:38:26 2014 -0700

    broadwell: Add small delay before Flex Ratio reboot
    
    In order to prevent possible TPM lockout due to PLTRST assertion
    shortly after powering up add a small delay before the reset.
    This will affect cold power up only, reboot/resume/warmboot will
    all have the flex ratio locked already so this reset is unneeded.
    
    BUG=chrome-os-partner:29859
    BRANCH=None
    TEST=build and boot on samus.  I tried unsuccessfully to trigger the
    TPM lockout, but I was not able to do that consistently without this
    patch so it is unknown yet whether this is 100% effective.
    
    Original-Change-Id: Ief8c9261c0268b0f90a3022213ebd2b06633b481
    Original-Signed-off-by: Duncan Laurie <dlaurie at chromium.org>
    Original-Reviewed-on: https://chromium-review.googlesource.com/211893
    Original-Reviewed-by: Aaron Durbin <adurbin at chromium.org>
    (cherry picked from commit 20413f2eafa144f5f381eb6f92d8b959415ca049)
    Signed-off-by: Marc Jones <marc.jones at se-eng.com>
    
    Change-Id: I665e9ed1faa65e88d988660a24bdad40a4c5ab7e
    Reviewed-on: http://review.coreboot.org/8957
    Tested-by: build bot (Jenkins)
    Reviewed-by: Aaron Durbin <adurbin at google.com>


See http://review.coreboot.org/8957 for details.

-gerrit



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