3 # Copyright (c) 2013, Google Inc.
5 # Simple Verified Boot Test Script
7 # This program is free software; you can redistribute it and/or
8 # modify it under the terms of the GNU General Public License as
9 # published by the Free Software Foundation; either version 2 of
10 # the License, or (at your option) any later version.
12 # This program is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with this program; if not, write to the Free Software
19 # Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 # Run U-Boot and report the result
28 echo -n "Test Verified Boot Run: $1: "
29 ${uboot} -d sandbox-u-boot.dtb >${tmp} -c '
30 sb load host 0 100 test.fit;
34 if ! grep -q "$2" ${tmp}; then
36 echo "Verified boot key check failed, output follows:"
44 echo "Simple Verified Boot Test"
45 echo "========================="
47 echo "Please see doc/uImage.FIT/verified-boot.txt for more information"
51 tmp=/tmp/vboot_test.$$
60 dtc="-I dts -O dtb -p 2000"
62 mkimage="${O}/tools/mkimage"
63 keys="${dir}/dev-keys"
64 echo ${mkimage} -D "${dtc}"
69 # Create an RSA key pair
70 openssl genrsa -F4 -out ${keys}/dev.key 2048 2>/dev/null
72 # Create a certificate containing the public key
73 openssl req -batch -new -x509 -key ${keys}/dev.key -out ${keys}/dev.crt
75 pushd ${dir} >/dev/null
77 # Compile our device tree files for kernel and U-Boot (CONFIG_OF_CONTROL)
78 dtc -p 0x1000 sandbox-kernel.dts -O dtb -o sandbox-kernel.dtb
79 dtc -p 0x1000 sandbox-u-boot.dts -O dtb -o sandbox-u-boot.dtb
81 # Create a number kernel image with zeroes
82 head -c 5000 /dev/zero >test-kernel.bin
84 # Build the FIT, but don't sign anything yet
85 echo Build FIT with signed images
86 ${mkimage} -D "${dtc}" -f sign-images.its test.fit >${tmp}
88 run_uboot "unsigned signatures:" "dev-"
90 # Sign images with our dev keys
92 ${mkimage} -D "${dtc}" -F -k dev-keys -K sandbox-u-boot.dtb -r test.fit >${tmp}
94 run_uboot "signed images" "dev+"
97 # Create a fresh .dtb without the public keys
98 dtc -p 0x1000 sandbox-u-boot.dts -O dtb -o sandbox-u-boot.dtb
100 echo Build FIT with signed configuration
101 ${mkimage} -D "${dtc}" -f sign-configs.its test.fit >${tmp}
103 run_uboot "unsigned config" "sha1+ OK"
105 # Sign images with our dev keys
107 ${mkimage} -D "${dtc}" -F -k dev-keys -K sandbox-u-boot.dtb -r test.fit >${tmp}
109 run_uboot "signed config" "dev+"
111 # Increment the first byte of the signature, which should cause failure
112 sig=$(fdtget -t bx test.fit /configurations/conf@1/signature@1 value)
113 newbyte=$(printf %x $((0x${sig:0:2} + 1)))
114 sig="${newbyte} ${sig:2}"
115 fdtput -t bx test.fit /configurations/conf@1/signature@1 value ${sig}
117 run_uboot "signed config with bad hash" "Bad Data Hash"