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make_dev_firmware.sh supports switching EC RO key

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For the EC supporting EFS boot, the RO section contains a
public key, and the RW is signed. For running FAFT, should
replace the RO key to a known one (the dev key under
vboot_reference), such that FAFT tests can resign the RW
using a known private key.

For BIOS image, we use make_dev_firmware.sh to do a similar
job to replace the key in BIOS. This CL makes the
make_dev_firmware script support changing EC key.

BUG=b:71769443
BRANCH=none
TEST=Modify files
$ # Check the original BIOS and EC images
$ futility show ec.bin
$ futility show bios.bin
$ ./make_dev_firmware.sh --change_ec -f bios.bin -t new_bios.bin \
  -e ec.bin -o new_ec.bin --backup_dir backup
$ # Check the new images, using new keys and verification succeeded
$ futility show new_ec.bin
$ futility show new_bios.bin

TEST=Modify live firmware
$ ./make_dev_firmware.sh --change_ec
And then run firmware_ECUpdateId with a Type-C charger.

TEST=Run sign_official_build.sh
$ sign_official_build.sh recovery recovery_image.bin \
~/trunk/src/platform/vboot_reference/tests/devkeys /tmp/out.bin

TEST=make runalltests

Change-Id: Id51e2c411a4e6d016e619cec91453ce918b7fff7
Reviewed-on: https://chromium-review.googlesource.com/889406
Commit-Ready: Wai-Hong Tam <waihong@google.com>
Tested-by: Wai-Hong Tam <waihong@google.com>
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
This commit is contained in:
Wai-Hong Tam
2018-01-25 17:45:06 -08:00
committed by chrome-bot
parent b5c00dbcba
commit 3585eb3d21
3 changed files with 241 additions and 135 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
scripts/image_signing/common_minimal.sh
View File

@@ -10,7 +10,8 @@
# Determine script directory
SCRIPT_DIR=$(dirname $0)
PROG=$(basename $0)
GPT=${GPT:-"cgpt"}
: ${GPT:=cgpt}
: ${FUTILITY:=futility}
# The tag when the rootfs is changed.
TAG_NEEDS_TO_BE_SIGNED="/root/.need_to_be_signed"
@@ -349,6 +350,31 @@ rw_mount_disabled() {
return 1
}
# Functions for CBFS management
# ----------------------------------------------------------------------------
# Get the compression algorithm used for the given CBFS file.
# Args: INPUT_CBFS_IMAGE CBFS_FILE_NAME
get_cbfs_compression() {
cbfstool "$1" print -r "FW_MAIN_A" | awk -vname="$2" '$1 == name {print $5}'
}
# Store a file in CBFS.
# Args: INPUT_CBFS_IMAGE INPUT_FILE CBFS_FILE_NAME
store_file_in_cbfs() {
local image="$1"
local file="$2"
local name="$3"
local compression=$(get_cbfs_compression "$1" "${name}")
cbfstool "${image}" remove -r "FW_MAIN_A,FW_MAIN_B" -n "${name}" || return
# This add can fail if
# 1. Size of a signature after compression is larger
# 2. CBFS is full
# These conditions extremely unlikely become true at the same time.
cbfstool "${image}" add -r "FW_MAIN_A,FW_MAIN_B" -t "raw" \
-c "${compression}" -f "${file}" -n "${name}" || return
}
# Misc functions
# ----------------------------------------------------------------------------
@@ -385,4 +411,9 @@ no_chronos_password() {
fi
}
# Returns true if given ec.bin is signed or false if not.
is_ec_rw_signed() {
${FUTILITY} dump_fmap "$1" | grep -q KEY_RO
}
trap "cleanup_temps_and_mounts" EXIT

312
scripts/image_signing/make_dev_firmware.sh
View File

@@ -17,8 +17,10 @@ DEFAULT_KEYS_FOLDER="$VBOOT_BASE/devkeys"
DEFAULT_BACKUP_FOLDER='/mnt/stateful_partition/backups'
# DEFINE_string name default_value description flag
DEFINE_string from "" "Path of input file (empty for system live firmware)" "f"
DEFINE_string to "" "Path of output file (empty for system live firmware)" "t"
DEFINE_string from "" "Path of input BIOS file (empty for system live BIOS)" "f"
DEFINE_string to "" "Path of output BIOS file (empty for system live BIOS)" "t"
DEFINE_string ec_from "" "Path of input EC file (empty for system live EC)" "e"
DEFINE_string ec_to "" "Path of output EC file (empty for system live EC)" "o"
DEFINE_string keys "$DEFAULT_KEYS_FOLDER" "Path to folder of dev keys" "k"
DEFINE_string preamble_flags "" "Override preamble flags value. Known values:
0: None. (Using RW to boot in normal. aka, two-stop)
@@ -27,6 +29,8 @@ DEFINE_boolean mod_hwid \
$FLAGS_TRUE "Modify HWID to indicate this is a modified firmware" ""
DEFINE_boolean mod_gbb_flags \
$FLAGS_TRUE "Modify GBB flags to enable developer friendly features" ""
DEFINE_boolean change_ec \
$FLAGS_FALSE "Change the key in the EC binary if EC uses EFS boot" ""
DEFINE_boolean force_backup \
$FLAGS_TRUE "Create backup even if source is not live" ""
DEFINE_string backup_dir \
@@ -40,11 +44,13 @@ eval set -- "$FLAGS_ARGV"
# ----------------------------------------------------------------------------
set -e
FLASHROM="flashrom -p host"
# the image we are (temporary) working with
IMAGE="$(make_temp_file)"
IMAGE="$(readlink -f "$IMAGE")"
IMAGE_BIOS="$(make_temp_file)"
IMAGE_BIOS="$(readlink -f "${IMAGE_BIOS}")"
if [ "${FLAGS_change_ec}" = "${FLAGS_TRUE}" ]; then
IMAGE_EC="$(make_temp_file)"
IMAGE_EC="$(readlink -f "${IMAGE_EC}")"
fi
# a log file to keep the output results of executed command
EXEC_LOG="$(make_temp_file)"
@@ -52,6 +58,32 @@ EXEC_LOG="$(make_temp_file)"
# Functions
# ----------------------------------------------------------------------------
flashrom_bios() {
if is_debug_mode; then
flashrom -V -p host "$@"
else
flashrom -p host "$@"
fi
}
flashrom_ec() {
if is_debug_mode; then
flashrom -V -p ec "$@"
else
flashrom -p ec "$@"
fi
}
# Execute the given command and log its output to the file ${EXEC_LOG}.
# If is_debug_mode, also print the output directly.
execute() {
if is_debug_mode; then
"$@" 2>&1 | tee "${EXEC_LOG}"
else
"$@" >"${EXEC_LOG}" 2>&1
fi
}
# Disables write protection status registers
disable_write_protection() {
# No need to change WP status in file mode
@@ -62,40 +94,52 @@ disable_write_protection() {
# --wp-disable command may return success even if WP is still enabled,
# so we should use --wp-status to verify the results.
echo "Disabling system software write protection status..."
(${FLASHROM} --wp-disable && ${FLASHROM} --wp-status) 2>&1 |
(flashrom_bios --wp-disable && flashrom_bios --wp-status) 2>&1 |
tee "$EXEC_LOG" |
grep -q '^WP: .* is disabled\.$'
}
# Reads $IMAGE from $FLAGS_from
# Reads ${IMAGE_BIOS} from ${FLAGS_from} and ${IMAGE_EC} from ${FLAGS_ec_from}
read_image() {
if [ -z "$FLAGS_from" ]; then
echo "Reading system live firmware..."
if is_debug_mode; then
${FLASHROM} -V -r "$IMAGE"
else
${FLASHROM} -r "$IMAGE" >"$EXEC_LOG" 2>&1
fi
echo "Reading system live BIOS firmware..."
execute flashrom_bios -r "${IMAGE_BIOS}"
else
debug_msg "reading from file: $FLAGS_from"
cp -f "$FLAGS_from" "$IMAGE"
debug_msg "reading from file: ${FLAGS_from}"
cp -f "${FLAGS_from}" "${IMAGE_BIOS}"
fi
if [ "${FLAGS_change_ec}" = "${FLAGS_TRUE}" ]; then
if [ -z "${FLAGS_ec_from}" ]; then
echo "Reading system live EC firmware..."
execute flashrom_ec -r "${IMAGE_EC}"
else
debug_msg "reading from file: ${FLAGS_ec_from}"
cp -f "${FLAGS_ec_from}" "${IMAGE_EC}"
fi
fi
}
# Writes $IMAGE to $FLAGS_to
# Writes ${IMAGE_BIOS} to ${FLAGS_to} and ${IMAGE_EC} to ${FLAGS_ec_to}
write_image() {
if [ -z "$FLAGS_to" ]; then
echo "Writing system live firmware..."
if [ -z "${FLAGS_to}" ]; then
echo "Writing system live BIOS firmware..."
# TODO(hungte) we can enable partial write to make this faster
if is_debug_mode; then
${FLASHROM} -w "$IMAGE" -V
else
${FLASHROM} -w "$IMAGE" >"$EXEC_LOG" 2>&1
fi
execute flashrom_bios -w "${IMAGE_BIOS}"
else
debug_msg "writing to file: $FLAGS_to"
cp -f "$IMAGE" "$FLAGS_to"
chmod a+r "$FLAGS_to"
debug_msg "writing to file: ${FLAGS_to}"
cp -f "${IMAGE_BIOS}" "${FLAGS_to}"
chmod a+r "${FLAGS_to}"
fi
if [ "${FLAGS_change_ec}" = "${FLAGS_TRUE}" ]; then
if [ -z "${FLAGS_ec_to}" ]; then
echo "Writing system live EC firmware..."
# TODO(hungte) we can enable partial write to make this faster
execute flashrom_ec -w "${IMAGE_EC}"
else
debug_msg "writing to file: ${FLAGS_ec_to}"
cp -f "${IMAGE_EC}" "${FLAGS_ec_to}"
chmod a+r "${FLAGS_ec_to}"
fi
fi
}
@@ -119,29 +163,40 @@ echo_dev_hwid() {
# ----------------------------------------------------------------------------
main() {
# Check parameters
local root_pubkey="$FLAGS_keys/root_key.vbpubk"
local recovery_pubkey="$FLAGS_keys/recovery_key.vbpubk"
local firmware_keyblock="$FLAGS_keys/firmware.keyblock"
local firmware_prvkey="$FLAGS_keys/firmware_data_key.vbprivk"
local dev_firmware_keyblock="$FLAGS_keys/dev_firmware.keyblock"
local dev_firmware_prvkey="$FLAGS_keys/dev_firmware_data_key.vbprivk"
local kernel_sub_pubkey="$FLAGS_keys/kernel_subkey.vbpubk"
local root_pubkey="${FLAGS_keys}/root_key.vbpubk"
local recovery_pubkey="${FLAGS_keys}/recovery_key.vbpubk"
local firmware_keyblock="${FLAGS_keys}/firmware.keyblock"
local firmware_prvkey="${FLAGS_keys}/firmware_data_key.vbprivk"
local dev_firmware_keyblock="${FLAGS_keys}/dev_firmware.keyblock"
local dev_firmware_prvkey="${FLAGS_keys}/dev_firmware_data_key.vbprivk"
local kernel_sub_pubkey="${FLAGS_keys}/kernel_subkey.vbpubk"
local ec_efs_pubkey="${FLAGS_keys}/key_ec_efs.vbpubk2"
local ec_efs_prvkey="${FLAGS_keys}/key_ec_efs.vbprik2"
local is_from_live=0
local backup_image=
local backup_bios_image=''
local backup_ec_image=''
debug_msg "Prerequisite check"
ensure_files_exist \
"$root_pubkey" \
"$recovery_pubkey" \
"$firmware_keyblock" \
"$firmware_prvkey" \
"$kernel_sub_pubkey" ||
"${root_pubkey}" \
"${recovery_pubkey}" \
"${firmware_keyblock}" \
"${firmware_prvkey}" \
"${kernel_sub_pubkey}" \
"${ec_efs_pubkey}" \
"${ec_efs_prvkey}" ||
exit 1
if [ -z "$FLAGS_from" ]; then
if [ -z "${FLAGS_from}" ]; then
is_from_live=1
else
ensure_files_exist "$FLAGS_from" || exit 1
ensure_files_exist "${FLAGS_from}" || exit 1
fi
if [ -z "${FLAGS_ec_from}" ]; then
is_from_live=1
else
ensure_files_exist "${FLAGS_ec_from}" || exit 1
fi
debug_msg "Checking software write protection status"
@@ -153,22 +208,60 @@ main() {
"Please verify that hardware write protection is disabled."
fi
debug_msg "Pulling image to $IMAGE"
(read_image && [ -s "$IMAGE" ]) ||
debug_msg "Pulling image"
(read_image &&
[ -s "${IMAGE_BIOS}" ] &&
[ "${FLAGS_change_ec}" = "${FLAGS_FALSE}" -o -s "${IMAGE_EC}" ]) ||
die "Failed to read image. Error message: $(cat "${EXEC_LOG}")"
debug_msg "Prepare to backup the file"
if [ -n "$is_from_live" -o $FLAGS_force_backup = $FLAGS_TRUE ]; then
backup_image="$(make_temp_file)"
debug_msg "Creating backup file to $backup_image..."
cp -f "$IMAGE" "$backup_image"
if [ -n "${is_from_live}" -o ${FLAGS_force_backup} = ${FLAGS_TRUE} ]; then
backup_bios_image="$(make_temp_file)"
debug_msg "Creating BIOS backup file to ${backup_bios_image}..."
cp -f "${IMAGE_BIOS}" "${backup_bios_image}"
if [ "${FLAGS_change_ec}" = "${FLAGS_TRUE}" ]; then
backup_ec_image="$(make_temp_file)"
debug_msg "Creating EC backup file to ${backup_ec_image}..."
cp -f "${IMAGE_EC}" "${backup_ec_image}"
fi
fi
local expanded_firmware_dir="$(make_temp_dir)"
if [ "${FLAGS_change_ec}" = "${FLAGS_TRUE}" ]; then
if is_ec_rw_signed "${IMAGE_EC}"; then
# TODO(waihong): These are duplicated from sign_official_build.sh. We need
# to move them to a single place for share.
debug_msg "Resign EC firmware with new EC EFS key"
local rw_bin="EC_RW.bin"
local rw_hash="EC_RW.hash"
# futility writes byproduct files to CWD, so we cd to temp dir.
local old_cwd=$(pwd)
cd "${expanded_firmware_dir}"
${FUTILITY} sign --type rwsig --prikey "${ec_efs_prvkey}" "${IMAGE_EC}" ||
die "Failed to sign EC image"
# Above command produces EC_RW.bin. Compute its hash.
openssl dgst -sha256 -binary "${rw_bin}" > "${rw_hash}"
debug_msg "Store ecrw and its hash to BIOS firmware"
store_file_in_cbfs "${IMAGE_BIOS}" "${rw_bin}" "ecrw" ||
die "Failed to store ecrw in BIOS image"
store_file_in_cbfs "${IMAGE_BIOS}" "${rw_hash}" "ecrw.hash" ||
die "Failed to store ecrw.hash in BIOS image"
cd "${old_cwd}"
# Continuous the code below to resign the BIOS image.
else
echo "EC image is not signed. Skip changing its key."
fi
fi
debug_msg "Detecting developer firmware keyblock"
local expanded_firmware_dir="$(make_temp_dir)"
local use_devfw_keyblock="$FLAGS_FALSE"
(cd "$expanded_firmware_dir"; dump_fmap -x "$IMAGE" >/dev/null 2>&1) ||
die "Failed to extract firmware image."
(cd "${expanded_firmware_dir}"; dump_fmap -x "${IMAGE_BIOS}" \
>/dev/null 2>&1) || die "Failed to extract firmware image."
if [ -f "$expanded_firmware_dir/VBLOCK_A" ]; then
local has_dev=$FLAGS_TRUE has_norm=$FLAGS_TRUE
# In output of vbutil_keyblock, "!DEV" means "bootable on normal mode" and
@@ -193,8 +286,8 @@ main() {
fi
debug_msg "Extract firmware version and data key version"
futility gbb -g --rootkey="$expanded_firmware_dir/rootkey" "$IMAGE" \
>/dev/null 2>&1
${FUTILITY} gbb -g --rootkey="${expanded_firmware_dir}/rootkey" \
"${IMAGE_BIOS}" >/dev/null 2>&1
local data_key_version firmware_version
# When we are going to flash directly from or to system, the versions stored
@@ -209,9 +302,9 @@ main() {
# need to check both and decide from largest number.
debug_msg "Guessing TPM version from original firmware."
local fw_info="$(vbutil_firmware \
--verify "$expanded_firmware_dir/VBLOCK_A" \
--signpubkey "$expanded_firmware_dir/rootkey" \
--fv "$expanded_firmware_dir/FW_MAIN_A")" 2>/dev/null ||
--verify "${expanded_firmware_dir}/VBLOCK_A" \
--signpubkey "${expanded_firmware_dir}/rootkey" \
--fv "${expanded_firmware_dir}/FW_MAIN_A" 2>/dev/null)" ||
die "Failed to verify firmware slot A."
data_key_version="$(
echo "$fw_info" | sed -n '/^ *Data key version:/s/.*:[ \t]*//p')"
@@ -252,25 +345,22 @@ main() {
debug_msg "Setting FLAGS=$FLAGS_preamble_flags"
optional_opts="$FLAGS_preamble_flags"
fi
cp -f "$IMAGE" "$unsigned_image"
"$SCRIPT_BASE/resign_firmwarefd.sh" \
"$unsigned_image" \
"$IMAGE" \
"$firmware_prvkey" \
"$firmware_keyblock" \
"$dev_firmware_prvkey" \
"$dev_firmware_keyblock" \
"$kernel_sub_pubkey" \
"$firmware_version" \
$optional_opts >"$EXEC_LOG" 2>&1 ||
cp -f "${IMAGE_BIOS}" "$unsigned_image"
execute "$SCRIPT_BASE/resign_firmwarefd.sh" \
"${unsigned_image}" \
"${IMAGE_BIOS}" \
"${firmware_prvkey}" \
"${firmware_keyblock}" \
"${dev_firmware_prvkey}" \
"${dev_firmware_keyblock}" \
"${kernel_sub_pubkey}" \
"${firmware_version}" \
${optional_opts} ||
die "Failed to re-sign firmware. (message: $(cat "${EXEC_LOG}"))"
if is_debug_mode; then
cat "$EXEC_LOG"
fi
debug_msg "Extract current HWID"
local old_hwid
old_hwid="$(futility gbb --get --hwid "$IMAGE" 2>"$EXEC_LOG" |
old_hwid="$(${FUTILITY} gbb --get --hwid "${IMAGE_BIOS}" 2>"${EXEC_LOG}" |
sed -rne 's/^hardware_id: (.*)$/\1/p')"
debug_msg "Decide new HWID"
@@ -282,8 +372,8 @@ main() {
fi
local old_gbb_flags
old_gbb_flags="$(futility gbb --get --flags "$IMAGE" 2>"$EXEC_LOG" |
sed -rne 's/^flags: (.*)$/\1/p')"
old_gbb_flags="$(${FUTILITY} gbb --get --flags "${IMAGE_BIOS}" \
2>"${EXEC_LOG}" | sed -rne 's/^flags: (.*)$/\1/p')"
debug_msg "Decide new GBB flags from: $old_gbb_flags"
[ -z "$old_gbb_flags" ] &&
die "Cannot find GBB flags. (message: $(cat "${EXEC_LOG}"))"
@@ -291,52 +381,68 @@ main() {
local new_gbb_flags="$((old_gbb_flags | 0x30))"
debug_msg "Replace GBB parts (futility gbb allows changing on-the-fly)"
futility gbb --set \
--hwid="$new_hwid" \
--rootkey="$root_pubkey" \
--recoverykey="$recovery_pubkey" \
"$IMAGE" >"$EXEC_LOG" 2>&1 ||
${FUTILITY} gbb --set \
--hwid="${new_hwid}" \
--rootkey="${root_pubkey}" \
--recoverykey="${recovery_pubkey}" \
"${IMAGE_BIOS}" >"${EXEC_LOG}" 2>&1 ||
die "Failed to change GBB Data. (message: $(cat "${EXEC_LOG}"))"
# Old firmware does not support GBB flags, so let's make it an exception.
if [ "$FLAGS_mod_gbb_flags" = "$FLAGS_TRUE" ]; then
debug_msg "Changing GBB flags from $old_gbb_flags to $new_gbb_flags"
futility gbb --set \
--flags="$new_gbb_flags" \
"$IMAGE" >"$EXEC_LOG" 2>&1 ||
echo "Warning: GBB flags ($old_gbb_flags -> $new_gbb_flags) can't be set."
if [ "${FLAGS_mod_gbb_flags}" = "${FLAGS_TRUE}" ]; then
debug_msg "Changing GBB flags from ${old_gbb_flags} to ${new_gbb_flags}"
${FUTILITY} gbb --set \
--flags="${new_gbb_flags}" \
"${IMAGE_BIOS}" >"${EXEC_LOG}" 2>&1 ||
echo "Warning: Can't set GBB flags ${old_gbb_flags} -> ${new_gbb_flags}."
fi
# TODO(hungte) compare if the image really needs to be changed.
debug_msg "Check if we need to make backup file(s)"
if [ -n "$backup_image" ]; then
local backup_hwid_name="$(echo "$old_hwid" | sed 's/ /_/g')"
if [ -n "${backup_bios_image}" ]; then
local backup_hwid_name="$(echo "${old_hwid}" | sed 's/ /_/g')"
local backup_date_time="$(date +'%Y%m%d_%H%M%S')"
local backup_file_name="firmware_${backup_hwid_name}_${backup_date_time}.fd"
local backup_file_path="$FLAGS_backup_dir/$backup_file_name"
if mkdir -p "$FLAGS_backup_dir" &&
cp -f "$backup_image" "$backup_file_path"; then
true
elif cp -f "$backup_image" "/tmp/$backup_file_name"; then
backup_file_path="/tmp/$backup_file_name"
local backup_bios_name="bios_${backup_hwid_name}_${backup_date_time}.fd"
local backup_bios_path="${FLAGS_backup_dir}/${backup_bios_name}"
local backup_ec_name="ec_${backup_hwid_name}_${backup_date_time}.fd"
local backup_ec_path=''
if mkdir -p "${FLAGS_backup_dir}" &&
cp -f "${backup_bios_image}" "${backup_bios_path}"; then
if [ -n "${backup_ec_image}" ]; then
backup_ec_path="${FLAGS_backup_dir}/${backup_ec_name}"
cp -f "${backup_ec_image}" "${backup_ec_path}"
fi
elif cp -f "${backup_bios_image}" "/tmp/${backup_bios_name}"; then
backup_bios_path="/tmp/${backup_bios_name}"
if [ -n "${backup_ec_image}" ]; then
cp -f "${backup_ec_image}" "/tmp/${backup_ec_name}"
backup_ec_path="/tmp/${backup_ec_name}"
fi
else
backup_file_path=''
backup_bios_path=''
fi
if [ -n "$backup_file_path" -a -s "$backup_file_path" ]; then
if [ -n "${backup_bios_path}" ]; then
# TODO(hungte) maybe we can wrap the flashrom by 'make_dev_firmware.sh -r'
# so that the only command to remember would be make_dev_firmware.sh.
echo "
Backup of current firmware image is stored in:
$backup_file_path
Please copy the backup file to a safe place ASAP.
Backup of current firmware image is stored in:
${backup_bios_path}
${backup_ec_path}
Please copy the backup file to a safe place ASAP.
To stop using devkeys and restore original firmware, execute command:
${FLASHROM} -w [PATH_TO_BACKUP_IMAGE]
Ex: ${FLASHROM} -w $backup_file_path
"
To stop using devkeys and restore original BIOS, execute command:
flashrom -p bios -w [PATH_TO_BACKUP_BIOS]
Ex: flashrom -p bios -w ${backup_bios_path}"
if [ -n "${backup_ec_image}" ]; then
echo "
To stop using devkeys and restore original EC, execute command:
flashrom -p ec -w [PATH_TO_BACKUP_EC]
Ex: flashrom -p ec -w ${backup_ec_path}"
fi
echo ""
else
echo "WARNING: Cannot create file in $FLAGS_backup_dir... Ignore backups."
echo "WARNING: Can't create file in ${FLAGS_backup_dir}. Ignore backups."
fi
fi

31
scripts/image_signing/sign_official_build.sh
View File

@@ -22,10 +22,6 @@
# Load common constants and variables.
. "$(dirname "$0")/common.sh"
# Which futility to run?
# futility is exception because there are local automated tests for it.
[ -z "${FUTILITY}" ] && FUTILITY=futility
# Print usage string
usage() {
cat <<EOF
@@ -122,11 +118,6 @@ is_old_verity_argv() {
return 1
}
# Returns true if given ec.bin is signed or false if not.
is_ec_rw_signed() {
${FUTILITY} dump_fmap "$1" | grep -q KEY_RO
}
# Get the dmparams parameters from a kernel config.
get_dmparams_from_config() {
local kernel_config=$1
@@ -503,28 +494,6 @@ sign_recovery_kernel() {
info "Signed recovery_kernel image output to ${image}"
}
# Get the compression algorithm used for the given CBFS file.
# Args: INPUT_CBFS_IMAGE CBFS_FILE_NAME
get_cbfs_compression() {
cbfstool "$1" print -r "FW_MAIN_A" | awk -vname="$2" '$1 == name {print $5}'
}
# Store a file in CBFS.
# Args: INPUT_CBFS_IMAGE INPUT_FILE CBFS_FILE_NAME
store_file_in_cbfs() {
local image="$1"
local file="$2"
local name="$3"
local compression=$(get_cbfs_compression "$1" "${name}")
cbfstool "${image}" remove -r "FW_MAIN_A,FW_MAIN_B" -n "${name}" || return
# This add can fail if
# 1. Size of a signature after compression is larger
# 2. CBFS is full
# These conditions extremely unlikely become true at the same time.
cbfstool "${image}" add -r "FW_MAIN_A,FW_MAIN_B" -t "raw" \
-c "${compression}" -f "${file}" -n "${name}" || return
}
# Sign a delta update payload (usually created by paygen).
# Args: INPUT_IMAGE KEY_DIR OUTPUT_IMAGE
sign_update_payload() {