diff options
| -rw-r--r-- | src/security/vboot/Kconfig | 7 | ||||
| -rw-r--r-- | src/security/vboot/Makefile.inc | 5 | ||||
| -rw-r--r-- | util/chromeos/README.md | 16 | ||||
| -rwxr-xr-x | util/chromeos/gen_test_hwid.sh | 31 |
4 files changed, 58 insertions, 1 deletions
diff --git a/src/security/vboot/Kconfig b/src/security/vboot/Kconfig index 1e372d86ba..d6d74cac73 100644 --- a/src/security/vboot/Kconfig +++ b/src/security/vboot/Kconfig @@ -228,7 +228,12 @@ menu "GBB configuration" config GBB_HWID string "Hardware ID" - default "NOCONF HWID" + default "" + help + A hardware identifier for device. On Chrome OS this is used for auto + update and recovery, and will be generated when manufacturing by the + factory software, in a strictly defined format. + Leave empty to get a test-only Chrome OS HWID v2 string generated. config GBB_BMPFV_FILE string "Path to bmpfv image" diff --git a/src/security/vboot/Makefile.inc b/src/security/vboot/Makefile.inc index 3078e30e21..abb8863c02 100644 --- a/src/security/vboot/Makefile.inc +++ b/src/security/vboot/Makefile.inc @@ -239,6 +239,11 @@ $(obj)/gbb.stub: $(obj)/coreboot.rom $(FUTILITY) mv $@.tmp $@ endif +# Generate a test-only HWID +ifeq ($(CONFIG_GBB_HWID),) +CONFIG_GBB_HWID := $$($(top)/util/chromeos/gen_test_hwid.sh "$(CONFIG_MAINBOARD_PART_NUMBER)") +endif + $(obj)/gbb.region: $(obj)/gbb.stub @printf " SETUP GBB\n" cp $< $@.tmp diff --git a/util/chromeos/README.md b/util/chromeos/README.md index 7a3897d8a0..0b9a7d74d8 100644 --- a/util/chromeos/README.md +++ b/util/chromeos/README.md @@ -26,3 +26,19 @@ $ ./crosfirmware.sh panther Right now it will produce the ME firmware blob, IFD, VGA option rom, and `mrc.bin`. + +## gen_test_hwid.sh + +`gen_test_hwid.sh` generates a test-only identifier in Chrome OS HWID v2 +compatible format. + +Usage: +``` +$ ./gen_test_hwid.sh BOARD_NAME +``` + +Example: +``` +$ ./gen_test_hwid.sh Kukui +KUKUI TEST 9847 +``` diff --git a/util/chromeos/gen_test_hwid.sh b/util/chromeos/gen_test_hwid.sh new file mode 100755 index 0000000000..849ff6a8c0 --- /dev/null +++ b/util/chromeos/gen_test_hwid.sh @@ -0,0 +1,31 @@ +#!/bin/sh +# +# This file is part of the coreboot project. +# +# Copyright 2019 Google Inc. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; version 2 of the License. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. + +main() { + if [ "$#" != 1 ]; then + echo "Usage: $0 MAINBOARD_PARTNUMBER" >&2 + exit 1 + fi + + # Generate a test-only Chrome OS HWID v2 string + local board="$1" + local prefix="$(echo "${board}" | tr a-z A-Z) TEST" + # gzip has second-to-last 4 bytes in CRC32. + local crc32="$(printf "${prefix}" | gzip -1 | tail -c 8 | head -c 4 | \ + hexdump -e '1/4 "%04u" ""' | tail -c 4)" + + echo "${prefix}" "${crc32}" +} +main "$@" |