[coreboot-gerrit] Patch merged into coreboot/master: spi/tpm: read TPM version in larger chunks

[gerrit at coreboot.org]

the following patch was just integrated into master:
commit 9e561f8e8087e0dc99e05f514c291da888085165
Author: Vadim Bendebury <vbendeb at chromium.org>
Date:   Sun Jul 31 11:19:20 2016 -0700

    spi/tpm: read TPM version in larger chunks
    
    The TPM version string has become much longer recently, and the
    TPM_FW_VER register available on VID 1ae0 devices supports reading in
    arbitrary size quantities.
    
    Let's read 50 bytes at a time to reduce the SPI register read wrapper
    overhead, and increase the length limit to 300 bytes to accommodate
    longer version strings.
    
    TEST=verified on the Kevin device:
     localhost ~ # grep cr50 /sys/firmware/log
     Firmware version: RO_A: 0.0.1/84e2dde7 RO_B:* 0.0.2/13eda43f RW_A:* cr50_v1.1.5005-444ddb7 RW_B: cr50_v1.1.5005-5aac83c
     cr50_v1.1.5005-444ddb7 private-cr51:v0.0.66-bd9a0fe tpm2:v0.0.259-8f3d735 cryptoc:v0.0.4-5319e83 2016-07-31 10:58:05 vbendeb at kvasha
    
    Change-Id: Ifaf28c1a9a3990372a9cec108c098edbe50d3243
    Signed-off-by: Vadim Bendebury <vbendeb at chromium.org>
    Reviewed-on: https://review.coreboot.org/16000
    Tested-by: build bot (Jenkins)
    Reviewed-by: Aaron Durbin <adurbin at chromium.org>


See https://review.coreboot.org/16000 for details.

-gerrit