Vadim Bendebury 665fa8bc05 tpm: limit the length of the string reported through TPM_FW_VER
The version string reported through TPM_FW_VER register has become way
too long, it takes too much time to transmit at startup, especially at
i2c speeds.

Let's limit it to the essentials: header versions and hashes of the
active RO and RW sections.

BRANCH=none
BUG=chrome-os-partner:49954
TEST=verified version in the firmware log
  localhost ~ # grep cr50 /sys/firmware/log
  Firmware version: B2:0 RO_A:0.0.1/84e2dde7 RW_A:0.0.3/cr50_v1.1.5106-f7349c9+

Change-Id: Ic391f90673fe21c0100b776944f6efc080213ff3
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/372380
Reviewed-by: Scott Collyer <scollyer@chromium.org>
2016-08-21 15:52:12 -07:00
2016-08-21 15:52:11 -07:00
2012-05-11 09:11:52 -07:00
2016-07-11 21:27:46 -07:00
2014-04-02 19:58:53 +00:00
2015-12-08 20:05:05 -08:00

For an overview of the Embedded Controller firmware, refer to

http://www.chromium.org/chromium-os/2014-firmware-summit

For instructions on building from source, refer to

http://www.chromium.org/chromium-os/ec-development/getting-started-building-ec-images-quickly
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