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Modify dev_debug_vboot for better usefulness

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* Display only the synopsis on stdout
* Keep a verbose log of all activity in the scratch directory.
* Add more checks
* Providing a directory argument will use the images found there instead of
  trying to extract them from the system (for use on host machines).

Change-Id: I065a18c9467c625cc33484ee5556d955dc79b01d

BUG=none
TEST=manual

Get a root shell and run "dev_debug_vboot". You should see nicer output.

Review URL: http://codereview.chromium.org/4106001
This commit is contained in:
Bill Richardson
2010-10-25 14:58:05 -07:00
parent 3e3704f23d
commit 6f9a99b538
2 changed files with 103 additions and 50 deletions
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151
utility/dev_debug_vboot
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@@ -4,64 +4,117 @@
# found in the LICENSE file.
#
TMPDIR=/tmp/debug_vboot
BIOS=bios.rom
# FIXME: support ARM
HD_KERN_A=/dev/sda2
HD_KERN_B=/dev/sda4
tmp=$(rootdev -s -d)2
if [ "$tmp" != "$HD_KERN_A" ]; then
USB_KERN_A="$tmp"
LOGFILE=noisy.log
die() {
echo "$*" 1>&2
exit 1
}
info() {
echo "$@"
echo "#" "$@" >> "$LOGFILE"
}
infon() {
echo -n "$@"
echo "#" "$@" >> "$LOGFILE"
}
log() {
echo "+" "$@" >> "$LOGFILE"
"$@" >> "$LOGFILE" 2>&1
}
logdie() {
echo "+" "$@" >> "$LOGFILE"
"$@" >> "$LOGFILE" 2>&1
die "$@"
}
result() {
if [ "$?" = "0" ]; then
info "OK"
else
info "FAILED"
fi
}
# Optional directory name containing "bios.rom" and "*kern*.blob" files. If not
# provided, we'll attempt to extract them ourselves.
if [ -d "$1" ]; then
TMPDIR="$1"
[ -d ${TMPDIR} ] || die "${TMPDIR} doesn't exist"
USE_EXISTING=yes
else
TMPDIR=/tmp/debug_vboot
[ -d ${TMPDIR} ] || mkdir -p ${TMPDIR}
fi
[ -d ${TMPDIR} ] || mkdir -p ${TMPDIR}
cd ${TMPDIR}
echo "$0 $*" > "$LOGFILE"
log date
echo "Saving verbose log as $(pwd)/$LOGFILE"
echo "INFO: extracting BIOS image from flash"
flashrom -r ${BIOS}
BIOS=bios.rom
echo "INFO: extracting kernel images from drives"
dd if=${HD_KERN_A} of=hd_kern_a.blob
dd if=${HD_KERN_B} of=hd_kern_b.blob
if [ -n "$USB_KERN_A" ]; then
dd if=${USB_KERN_A} of=usb_kern_a.blob
# Find BIOS and kernel images
if [ -n "$USE_EXISTING" ]; then
info "Using images in $(pwd)/"
else
info "Extracting BIOS image from flash..."
log flashrom -r ${BIOS}
# FIXME: support ARM
HD_KERN_A=/dev/sda2
HD_KERN_B=/dev/sda4
tmp=$(rootdev -s -d)2
if [ "$tmp" != "$HD_KERN_A" ]; then
USB_KERN_A="$tmp"
fi
info "Extracting kernel images from drives..."
log dd if=${HD_KERN_A} of=hd_kern_a.blob
log dd if=${HD_KERN_B} of=hd_kern_b.blob
if [ -n "$USB_KERN_A" ]; then
log dd if=${USB_KERN_A} of=usb_kern_a.blob
fi
fi
echo "INFO: extracting BIOS components"
dump_fmap -x ${BIOS} || echo "FAILED"
# Make sure we have something to work on
[ -f "$BIOS" ] || logdie "no BIOS image found"
ls *kern*.blob >/dev/null 2>&1 || logdie "no kernel images found"
echo "INFO: pulling root and recovery keys from GBB"
gbb_utility -g --rootkey rootkey.vbpubk --recoverykey recoverykey.vbpubk \
GBB_Area || echo "FAILED"
echo "INFO: display root key"
vbutil_key --unpack rootkey.vbpubk
echo "INFO: display recovery key"
vbutil_key --unpack recoverykey.vbpubk
info "Extracting BIOS components..."
log dump_fmap -x ${BIOS} || logdie "Unable to extract BIOS components"
echo "TEST: verify firmware A with root key"
vbutil_firmware --verify Firmware_A_Key --signpubkey rootkey.vbpubk \
--fv Firmware_A_Data --kernelkey kernel_subkey_a.vbpubk || echo "FAILED"
echo "TEST: verify firmware B with root key"
vbutil_firmware --verify Firmware_B_Key --signpubkey rootkey.vbpubk \
--fv Firmware_B_Data --kernelkey kernel_subkey_b.vbpubk || echo "FAILED"
info "Pulling root and recovery keys from GBB..."
log gbb_utility -g --rootkey rootkey.vbpubk --recoverykey recoverykey.vbpubk \
GBB_Area || logdie "Unable to extract keys from GBB"
log vbutil_key --unpack rootkey.vbpubk
log vbutil_key --unpack recoverykey.vbpubk
echo "TEST: verify HD kernel A with firmware A key"
vbutil_kernel --verify hd_kern_a.blob --signpubkey kernel_subkey_a.vbpubk \
|| echo "FAILED"
echo "TEST: verify HD kernel B with firmware A key"
vbutil_kernel --verify hd_kern_b.blob --signpubkey kernel_subkey_a.vbpubk \
|| echo "FAILED"
infon "Verify firmware A with root key... "
log vbutil_firmware --verify Firmware_A_Key --signpubkey rootkey.vbpubk \
--fv Firmware_A_Data --kernelkey kernel_subkey_a.vbpubk ; result
infon "Verify firmware B with root key... "
log vbutil_firmware --verify Firmware_B_Key --signpubkey rootkey.vbpubk \
--fv Firmware_B_Data --kernelkey kernel_subkey_b.vbpubk ; result
echo "TEST: verify HD kernel A with firmware B key"
vbutil_kernel --verify hd_kern_a.blob --signpubkey kernel_subkey_b.vbpubk \
|| echo "FAILED"
echo "TEST: verify HD kernel B with firmware B key"
vbutil_kernel --verify hd_kern_b.blob --signpubkey kernel_subkey_b.vbpubk \
|| echo "FAILED"
for key in kernel_subkey_a.vbpubk kernel_subkey_b.vbpubk; do
infon "Test $key... "
log vbutil_key --unpack $key ; result
done
if [ -n "$USB_KERN_A" ]; then
echo "TEST: verify USB kernel A with recovery key"
vbutil_kernel --verify usb_kern_a.blob --signpubkey recoverykey.vbpubk \
|| echo "FAILED"
fi
for keyblock in *kern*.blob; do
infon "Test $keyblock... "
log vbutil_keyblock --unpack $keyblock ; result
done
# Test each kernel with each key
for key in kernel_subkey_a.vbpubk kernel_subkey_b.vbpubk recoverykey.vbpubk; do
for kern in *kern*.blob; do
infon "Verify $kern with $key... "
log vbutil_kernel --verify $kern --signpubkey $key ; result
done
done