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No recent Chromebooks have used I2C for TPM communication, and as a
result, a bug has crept in. The ability to extract Cr50 firmware string
is only supported via SPI, yet code in mainboard and vendorcode attempt
to do so unconditionally.
This CL makes it such that the code also compiles for future designs
using I2C. (Whether we want to enhance the I2C protocol to be able to
provide the version string, and then implement the support is a separate
question.)
This effort is prompted by the desire to use reworked Volteer EVT
devices for validating the new Ti50/Dauntless TPM. Dauntless will
primarily be using I2C in upcoming designs.
BRANCH=volteer
TEST=util/abuild/abuild -t GOOGLE_VOLTEER -c max -x
Change-Id: Ida1d732e486b19bdff6d95062a3ac1a7c4b58b45
Signed-off-by: jbk@chromium.org
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46436
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Caveh Jalali <caveh@chromium.org>
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Coverity detects missing error handling after calling function
tlcl_lib_init. This change checks the function tlcl_lib_init return
value and handles error properly.
Found-by: Coverity CID 1431994
TEST=None
Signed-off-by: John Zhao <john.zhao@intel.com>
Change-Id: Ib831646b6a231ad57e3bfef85b801b592d572e6a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44777
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Caveh Jalali <caveh@chromium.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
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When CSE Lite jumps from RO to RW, certain boards need to request
Embedded Controller (EC) to trigger cold reset of SoC. This change
introduces a helper to override the default global reset.
BUG=None
TEST=Ensure that Drawcia board boots to OS. Ensure that global reset is
triggered when cr50 is running firmware versions newer than 0.0.22. On
cr50 versions 0.0.22 or older, EC triggers cold reset of AP.
Change-Id: I8078e2436d1d58a650bf7b0cf38b5bb89a474187
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44646
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
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