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dl_flash_functions
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# Copyright (C) 2006 Joey Hess
# Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2016 Martin Michlmayr <[email protected]>
# Copyright (C) 2011 Loïc Minier <[email protected]>
# Copyright (C) 2011 Julian Andres Klode <[email protected]>
# Copyright (C) 2013-2016 Ian Campbell <[email protected]>
# 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; either version 2
# of the License, or (at your option) any later version.
#
# 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.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301,
# USA.
BOOTSCRIPTS_DIR="${FK_CHECKOUT:-/etc/flash-kernel}/bootscript"
FK_ETC_MACHINE="${FK_ETC_MACHINE:-/etc/flash-kernel/machine}"
PROC_CPUINFO="${FK_PROC_CPUINFO:-/proc/cpuinfo}"
PROC_DTMODEL="${FK_PROC_DTMODEL:-/proc/device-tree/model}"
PROC_MTD="/proc/mtd"
read_machine_db() {
if [ -f "${FK_ETC_DB:-/etc/flash-kernel/db}" ]; then
cat "${FK_ETC_DB:-/etc/flash-kernel/db}"
fi
cat "${FK_CHECKOUT:-$FK_DIR}/db/"*.db
}
MACHINE_DB="$(read_machine_db)"
error() {
echo "$@" >&2
exit 1
}
mtdblock() {
local mtdname="$1"
local dev=`sed -rn "s,^mtd([^:]*).*\"$mtdname\"\$,/dev/mtdblock\\1,p" "$PROC_MTD"`
# The mtdblock() function gets also called by the testsuite during
# the package build; don't run modprobe and udevadm then. Invasive
# actions like loading modules and calling into udev should not
# happen at build time and they are not necessary for the testsuite.
if [ -z "${FK_TESTSUITE_RUNNING}" ]; then
modprobe -q mtdblock && udevadm settle --exit-if-exists=$dev || :
fi
echo $dev
}
mtdchar() {
local mtdname="$1"
local dev=`sed -rn "s,^mtd([^:]*).*\"$mtdname\"\$,/dev/mtd\\1,p" "$PROC_MTD"`
echo $dev
}
check_block_dev() {
local dev="$1"
if [ ! -b "$dev" ]; then
error "$dev is not a block device"
fi
}
check_char_dev() {
local dev="$1"
if [ ! -c "$dev" ]; then
error "$dev is not a character device"
fi
}
mtdsize() {
local mtdname="$1"
size=$(grep "\"$mtdname\"$" "$PROC_MTD" | cut -d " " -f 2)
printf "%d" "0x$size"
}
check_kflavors() {
local kvers="$1"
local kflavor="$2"
if [ "$kflavor" = "any" ]; then
return 0
fi
# count flavor+ as valid
kvers=${kvers%%+}
if [ "${kvers}" != "${kvers%%$kflavor}" ]; then
# kernel version ended with flavor
return 0
fi
return 1
}
check_mtd_size() {
local mtd_name="$1"
local required_size="$2"
local actual_size="$3"
local what="$4"
if [ $required_size -gt $actual_size ]; then
case $what in
initrd)
(
echo
echo "The initial ramdisk is too large. This is often due to the unnecessary inclusion"
echo "of all kernel modules in the image. To fix this set MODULES=dep in one or both"
echo "/etc/initramfs-tools/conf.d/driver-policy (if it exists) and"
echo "/etc/initramfs-tools/initramfs.conf and then run 'update-initramfs -u -k $kvers'"
echo
) >&2
;;
esac
error "Not enough space for $what in MTD '$mtd_name' (need $required_size but is actually $actual_size)."
fi
}
check_supported() {
local machine="$1"
local field
local value
echo "$MACHINE_DB" | {
while read field value; do
if [ "$field" = "Machine:" ] &&
[ "$value" = "$machine" ]; then
return 0
fi
done
return 1
}
}
get_boot_cmd() {
case "$(dpkg --print-architecture)" in
arm64|riscv64) echo booti ;;
*) echo bootz ;;
esac
}
get_cpuinfo_hardware() {
grep "^Hardware" "$PROC_CPUINFO" | sed 's/Hardware\s*:\s*//'
}
get_dt_model() {
cat "$PROC_DTMODEL"
}
get_machine() {
if [ -n "$FK_MACHINE" ]; then
[ "x$FK_MACHINE" = "xnone" ] && exit 0
machine="$FK_MACHINE"
elif [ -f "$FK_ETC_MACHINE" ]; then
machine="$(cat "$FK_ETC_MACHINE")"
elif [ -f "$PROC_DTMODEL" ]; then
machine="$(get_dt_model)"
else
machine="$(get_cpuinfo_hardware)"
fi
}
get_kfile_suffix() {
local kfile="$1"
local tail="${2:+-$2}"
echo "$kfile" | sed -e "s/.*-\([^-]*$tail\)/\\1/"
}
# this is case-sensitive and doesn't support fields spanning multiple lines
get_machine_field() {
local machine="$1"
local field_name="$2"
local state="machine"
local field
local value
# State machine is:
# machine: Looking for "Machine:"
# gotmachine: Seen matching "Machine:", possibly consumning other
# alternative (non-matching) "Machine:"s waiting for
# non-"Machine:" field.
# fields: seen non-"Machine:" field.
echo "$MACHINE_DB" | {
while read field value; do
if [ "$state" = "machine" ] &&
[ "$field" = "Machine:" ] &&
[ "$value" = "$machine" ]; then
state="gotmachine"
fi
if [ "$state" = "fields" ] || [ "$state" = "gotmachine" ]; then
case "$field" in
"${field_name}:")
echo "$value"
return 0
;;
Machine:)
if [ "$state" != "gotmachine" ]; then
echo "DB syntax invalid, got $field $value, expected regular Field" >&2
return 1
fi
;;
"")
state="machine"
;;
*)
state="fields"
;;
esac
fi
done
return 1
}
}
get_mkimage_architecture() {
kfile_suffix=$(get_kfile_suffix "$1" "")
case "$kfile_suffix" in
"arm64") echo "arm64";;
*) echo "arm";;
esac
}
get_dtb_name() {
local field="$(get_machine_field "$machine" "DTB-Id")" || :
case "$field" in
!*)
local dir
local dtb_script
dtb_script_name=${field#!}
for dir in /etc/flash-kernel/dtb-probe \
/usr/share/flash-kernel/dtb-probe ; do
if [ -e "$dir/$dtb_script_name" ]; then
dtb_script="$dir/$dtb_script_name"
break
fi
done
if [ "x$dtb_script" = "x" ]; then
error "dtb-probe $dtb_script_name not found"
fi
dtb_name=$($dtb_script $kvers)
if [ $? -ne 0 ] || [ "x$dtb_name" = "x" ]; then
error "dtb-probe $dtb_script failed"
fi
;;
*)
dtb_name="$field"
;;
esac
if [ -n "$dtb_name" ] ; then
echo "Using DTB: $dtb_name" >&2
fi
dtb_dir=$(dirname "$dtb_name")
dtb_name=$(basename "$dtb_name")
}
machine_uses_flash() {
local machine="$1"
if ! check_supported "$machine"; then
# assume devices not explicitly listed are using flash
return 0
fi
if [ -n "$(get_machine_field "$machine" "Mtd-Kernel")" ] ||
[ -n "$(get_machine_field "$machine" "Mtd-Initrd")" ]; then
return 0
fi
return 1
}
# output ARM instructions to set machine number; argument is the decimal
# machine number as found in linux/arch/arm/tools/mach-types
set_machine_id() {
local machine_id="$1"
local high
local low
if [ -z "$machine_id" ]; then
return
fi
high="$(printf "%02x" $(($machine_id / 256)))"
low="$(printf "%02x" $(($machine_id % 256)))"
devio "wl 0xe3a01c$high,4" "wl 0xe38110$low,4"
}
gen_kernel() {
local input="$1"
local output="$2"
local machine_id="$3"
{
set_machine_id "$machine_id"
cat "$input"
} >"$output"
}
gen_preboot() {
PRESTUBDIRS="/etc/flash-kernel/preboot.d /usr/share/flash-kernel/preboot.d"
PRESTUBS="$(find $PRESTUBDIRS -type f -regex '.*/[0-9a-zA-Z_-]+' -printf '%f\n' | LC_ALL=C sort -u)"
for file in $PRESTUBS; do
for dir in $PRESTUBDIRS; do
if [ -f $dir/$file ]; then
cat $dir/$file
break
fi
done
done
}
gen_ubootenv() {
ENVSTUBDIRS="/etc/flash-kernel/ubootenv.d /usr/share/flash-kernel/ubootenv.d"
ENVSTUBS="$(find $ENVSTUBDIRS -type f -regex '.*/[0-9a-zA-Z_-]+' -printf '%f\n' | LC_ALL=C sort -u)"
for file in $ENVSTUBS; do
for dir in $ENVSTUBDIRS; do
if [ -f $dir/$file ]; then
cat $dir/$file
break
fi
done
done
}
append_dtb() {
local kernel="$1"
local dtb="$2"
local output="$3"
echo "flash-kernel: appending $dtb to kernel" >&2
{
cat "$kernel"
cat "$dtb"
} >"$output"
}
write_mtd() {
local input_file="$1"
local output_mtd="$2"
local base_mtd=$(basename $output_mtd)
local mtd_backup_dir=$(get_mtd_backup_dir)
local tmpfile
if [ "x$input_file" = "x-" ] ; then
tmpfile=$(mktemp -t "$self.$base_mtd.XXXXXX") || error "Failed"
cat > $tmpfile
input_file="$tmpfile"
fi
# Keep a copy in a convenient place for backups etc
if [ -n "${mtd_backup_dir}" ] ; then
local backup="${mtd_backup_dir}/${base_mtd}"
#echo "Saving new $output_mtd in ${backup}."
mkdir -p "${mtd_backup_dir}"
cp "$input_file" "${backup}"
fi
echo "QNAPhomebrew Skipping actual write to flash (copy saved in $backup )" >&2
if [ "$tmpfile" ] ; then
rm -f "$tmpfile"
fi
}
flash_kernel() {
local input_file="$1"
local output_mtd="$2"
local machine_id="$3"
local use
if [ -n "$kmtdsize" ]; then
kreqsize=$(stat -c '%s' "$input_file")
if [ -n "$machine_id" ]; then
kreqsize=$(($kreqsize + 8))
fi
check_mtd_size "$mtd_kernel" $kreqsize $kmtdsize kernel
use=" (using $kreqsize/$kmtdsize bytes)"
fi
printf "Flashing kernel$use... " >&2
gen_kernel "$input_file" "$tmpdir/flash_kernel.raw" "$machine_id" || error "failed."
write_mtd "$tmpdir/flash_kernel.raw" "$output_mtd" || error "failed."
echo "done." >&2
}
flash_initrd() {
local input_file="$1"
local output_mtd="$2"
local pad="$3"
local use
if [ -n "$imtdsize" ]; then
use=" (using $ireqsize/$imtdsize bytes)"
fi
printf "Flashing initramfs$use... " >&2
{
cat "$input_file"
if [ "$pad" -gt 0 ]; then
dd if=/dev/zero bs="$pad" count=1 2>/dev/null
fi
} | write_mtd "-" "$output_mtd" || error "failed."
echo "done." >&2
}
get_kernel_cmdline() {
. /etc/default/flash-kernel
echo "$LINUX_KERNEL_CMDLINE"
}
get_kernel_cmdline_defaults() {
. /etc/default/flash-kernel
echo "$LINUX_KERNEL_CMDLINE_DEFAULTS"
}
mkimage_kernel() {
local kaddr="$1"
local epoint="$2"
local kdesc="$3"
local kdata="$4"
local uimage="$5"
printf "Generating kernel u-boot image... " >&2
mkimage -A "$mkarch" -O linux -T kernel -C none -a "$kaddr" -e "$epoint" \
-n "$kdesc" -d "$kdata" "$uimage" >&2 1>/dev/null
echo "done." >&2
}
mkimage_initrd() {
local iaddr="$1"
local idesc="$2"
local idata="$3"
local uinitrd="$4"
printf "Generating initramfs u-boot image... " >&2
mkimage -A "$mkarch" -O linux -T ramdisk -C none -a "$iaddr" -e "$iaddr" \
-n "$idesc" -d "$idata" "$uinitrd" >&2 1>/dev/null
echo "done." >&2
}
mkimage_script() {
local saddr="$1"
local sdesc="$2"
local sdata="$3"
local script="$4"
local tdata="$tmpdir/$(basename $sdata).out"
local ubootenv="$(mktemp --tmpdir=$tmpdir)"
gen_ubootenv > $ubootenv
local preboot="$(mktemp --tmpdir=$tmpdir)"
gen_preboot > $preboot
if [ "$(stat --printf='%s' $ubootenv)" -gt 0 ] && \
! grep -q '@@UBOOT_ENV_EXTRA@@' "$sdata" ; then
echo "WARNING: ubootenv.d snippet used, but $sdata has no @@UBOOT_ENV_EXTRA@@ marker. Snippet will be ignored." >&2
fi
printf "Generating boot script u-boot image... " >&2
sed -e "s/@@KERNEL_VERSION@@/$kvers/g" \
-e "s!@@LINUX_KERNEL_CMDLINE@@!$(get_kernel_cmdline)!g" \
-e "s!@@LINUX_KERNEL_CMDLINE_DEFAULTS@@!$(get_kernel_cmdline_defaults)!g" \
-e "s!@@BOOT_CMD@@!$(get_boot_cmd)!g" \
-e "/@@UBOOT_ENV_EXTRA@@/{
s/@@UBOOT_ENV_EXTRA@@//g
r $ubootenv
}" < $sdata > $tdata \
-e "/@@UBOOT_PREBOOT_EXTRA@@/{
s/@@UBOOT_PREBOOT_EXTRA@@//g
r $preboot
}" < $sdata > $tdata
mkimage -A "$mkarch" -O linux -T script -C none -a "$saddr" -e "$saddr" \
-n "$sdesc" -d "$tdata" "$script" >&2 1>/dev/null
echo "done." >&2
}
mkimage_multi() {
local maddr="$1"
local mdesc="$2"
local kdata="$3"
local idata="$4"
local umulti="$5"
local images="$kdata"
[ -z "$idata" ] || images="$images:$idata"
printf "Generating u-boot image..." >&2
mkimage -A "$mkarch" -O linux -T multi -C none -a "$maddr" -e "$maddr" \
-n "$mdesc" -d "$images" "$umulti" >&2 1>/dev/null
echo "done." >&2
}
# Return a nonempty string *unless* NO_CREATE_DOT_BAK_FILES is set.
get_dot_bak_preference() {
. /etc/default/flash-kernel
case $(echo "$NO_CREATE_DOT_BAK_FILES" | tr '[:upper:]' '[:lower:]') in
true|yes|1) ;;
*) echo yes ;;
esac
}
# Return a nonempty string *unless* MTD_BACKUP_DIR is "none".
get_mtd_backup_dir() {
MTD_BACKUP_DIR=/var/opt/homebrew
mkdir -p /var/opt/homebrew 2> /dev/null
echo "${MTD_BACKUP_DIR}"
}
backup_and_install() {
local source="$1"
local dest="$2"
local do_dot_bak=$(get_dot_bak_preference)
local mtd_backup_dir=$(get_mtd_backup_dir)
if [ -e "$dest" ]; then
if [ -n "$do_dot_bak" ]; then
echo "Taking backup of $(basename "$dest")." >&2
mv "$dest" "$dest.bak"
else
echo "Skipping backup of $(basename "$dest")." >&2
fi
fi
# If we are installing to a filesystem which is not normally mounted
# then take a second copy in /var/backups, where they can e.g. be
# backed up.
if [ -n "$boot_mnt_dir" ] && [ -n "$mtd_backup_dir" ] ; then
local bak="$mtd_backup_dir/"$(basename "$dest")
#echo "Saving $boot_device:"$(basename "$source")" in $bak"
mkdir -p "$mtd_backup_dir"
cp "$source" "$bak"
fi
echo "Installing new $(basename "$dest")." >&2
mv "$source" "$dest"
}
# See http://www.nslu2-linux.org/wiki/Info/BootFlash -- the NSLU2 uses a
# 16 byte MTD header, the first four bytes (big endian) give the length of
# the remainder of the image, and the remaining bytes are zero. Generate
# this header.
sercomm_header() {
perl -e 'print pack("N4", shift)' "$1"
}
nslu2_swap() {
if [ "$little_endian" -eq 1 ]; then
devio "<<$1" "xp $,4"
else
cat "$1"
fi
}
# XXX needs testsuite coverage
abootimg_get_image_size() {
local abootimg="$1"
echo "$abootimg" | sed -rn 's/^\* image size = ([0-9]+) bytes.*/\1/p'
}
dtb_append_required() {
linux-version compare "$kvers" ge "$dtb_append_from"
}
# XXX needs testsuite coverage
android_flash() {
local device="$1"
printf "Flashing kernel and initramfs to $device... " >&2
abootimg -u "$device" -k "$kfile" -r "$ifile" >/dev/null ||
error "failed."
echo "done." >&2
}
find_dtb_file() {
local dtb
case "$dtb_dir" in
/*)
dtb="$dtb_dir/$dtb_name"
if [ ! -f "$dtb" ]; then
error "Couldn't find $dtb"
fi
;;
*)
dtb=$(find /etc/flash-kernel/dtbs -name $dtb_name 2>/dev/null | head -n 1)
if [ -z "$dtb" ]; then
dtb=$(find /usr/lib/linux-image-$kvers -name $dtb_name 2>/dev/null | head -n 1)
fi
if [ ! -f "$dtb" ]; then
error "Couldn't find DTB $dtb_name in /usr/lib/linux-image-$kvers or /etc/flash-kernel/dtbs"
fi
;;
esac
echo $dtb
}
handle_dtb() {
if [ "x$dtb_name" = "x" ]; then
return
fi
dtbfile="/boot/dtbs/$kvers/$dtb_dir/$dtb_name"
local dtb
if [ "x$FK_KERNEL_HOOK_SCRIPT" = "xpostrm.d" ] ; then
rm -f "$dtbfile"
# This was the old name we installed under. We
# currently include it as an alternative symlink.
rm -f "/boot/dtb-$kvers"
if [ -L /boot/dtb ] ; then
# Remove if it points to the current kernel
# version, both old (dtb-$kvers) and new
# (dtbs/...) names
case $(readlink /boot/dtb) in
"dtb-$kvers") rm -f /boot/dtb ;;
"dtbs/$kvers/$dtb_name") rm -f /boot/dtb ;;
esac
fi
if [ -d /boot/dtbs/$kvers ] ; then
rmdir --ignore-fail-on-non-empty /boot/dtbs/$kvers
fi
if [ -d /boot/dtbs ] ; then
rmdir --ignore-fail-on-non-empty /boot/dtbs
fi
else
local dtb=$(find_dtb_file)
echo "Installing $dtb into $dtbfile" >&2
mkdir -p "/boot/dtbs/$kvers/$dtb_dir"
cp "$dtb" "$dtbfile.new"
backup_and_install "$dtbfile.new" "$dtbfile"
if [ "$dtb_dir" != "." ]; then
ln -nfs "$dtb_dir/$dtb_name" "/boot/dtbs/$kvers/$dtb_name"
fi
# Historically we installed the dtb as
# dtb-$kvers, keep it around as an alternative
# for now. Useful for platforms which do not
# set ${fdtfile}
ln -nfs "dtbs/$kvers/$dtb_dir/$dtb_name" "/boot/dtb-$kvers"
# This can be used along with the unversioned
# vmlinuz+initrd.gz e.g. as a fallback option
ln -nfs "dtbs/$kvers/$dtb_dir/$dtb_name" "/boot/dtb"
fi
}
main() {
echo "in QNAPhomebrew flash-kernel/main FK_TESTSUITE_RUNNING=${FK_TESTSUITE_RUNNING}" >&2
force="no"
if [ "x$1" = "x--force" ]; then
force="yes"
shift
fi
if [ "x$1" = "x--machine" ]; then
machine="$2"
shift 2
else
get_machine
fi
if [ "x$1" = "x--supported" ]; then
if check_supported "$machine"; then
exit 0
fi
exit 1
fi
# $FK_KERNEL_HOOK_SCRIPT is set when main() is called from
# /etc/kernel/* to be able to differentiate between being called
# upon kernel installation or kernel removal
# kernel + initrd installation/upgrade mode, with optional version
kvers="$1"
get_dtb_name
# Install/remove any DTB from postinst, regardless of version
if [ -n "$kvers" ] ; then
handle_dtb
fi
latest_version=$(linux-version list | linux-version sort | tail -1)
if [ -n "$kvers" ] && [ "$FK_KERNEL_HOOK_SCRIPT" = "postrm.d" ]; then
echo "flash-kernel: Kernel ${kvers} has been removed." >&2
if $(linux-version compare "$kvers" lt "$latest_version"); then
echo "flash-kernel: A higher version (${latest_version}) is still installed, no reflashing required." >&2
exit 0
else
if [ -n "${latest_version}" ]; then
echo "flash-kernel: Flashing the remaining highest-versioned kernel (${latest_version})." >&2
else
echo "flash-kernel: WARNING: No other kernel packages found!" >&2
echo "flash-kernel: The system might be unbootable." >&2
echo "flash-kernel: Please install a kernel package before rebooting the system." >&2
exit 0
fi
fi
fi
if [ "$kvers" != "$latest_version" ] && [ "x$force" = "xyes" ]; then
echo "flash-kernel: forcing install of ${kvers} instead of ${latest_version}." >&2
echo "flash-kernel: WARNING: Installing any new kernel package might override this." >&2
else
if [ -n "$kvers" ] && [ "$kvers" != "$latest_version" ]; then
echo "Ignoring old or unknown version $kvers (latest is $latest_version)" >&2
if [ "$FK_KERNEL_HOOK_SCRIPT" = "postinst.d" ]; then
exit 0
fi
echo "Use --force if you want version $kvers." >&2
fi
kvers="$latest_version"
# Make sure we install the DTB for $latest_version
handle_dtb
fi
# accumulate multiple calls in a trigger to only run flash-kernel once; the
# trigger will just call flash-kernel again with FLASH_KERNEL_NOTRIGGER set to
# force a real run
if [ -z "$FLASH_KERNEL_NOTRIGGER" ] && [ -n "$DPKG_MAINTSCRIPT_PACKAGE" ] && dpkg-trigger --check-supported 2>/dev/null; then
# flash-kernel trigger isn't disabled, and we're called from
# some package maintainer script (e.g. some postinst calls
# flash-kernel), and dpkg-trigger is installed and confirms
# that the running dpkg support triggers: we can use the
# flash-kernel trigger (asynchronously)
if dpkg-trigger --no-await flash-kernel; then
echo "flash-kernel: deferring update (trigger activated)" >&2
exit 0
fi
# dpkg-trigger failed for some reason, proceed to a normal run
fi
kfile="/boot/vmlinuz-$kvers"
ifile="/boot/initrd.img-$kvers"
desc="kernel $kvers"
idesc="ramdisk $kvers"
if [ ! -e "$ifile" ]; then
ifile=
fi
if [ ! -e $kfile ]; then
# installation-report #781742 included:
# Can't find /boot/vmlinuz-[...] or /boot/initrd.img-[...]
#
# It's unclear how this can have happened or what state the
# system was in, so log some additional information in the
# hopes of catching it in the act next time.
(
set -x
ls -l $kfile*
ls -l $ifile*
) >> /tmp/flash-kernel-no-kernel-error.log 2>&1 || :
error "Can't find $kfile (see /tmp/flash-kernel-no-kernel-error.log)"
fi
kfilesize=$(stat -c '%s' "$kfile")
[ -z "$ifile" ] || ifilesize=$(stat -c '%s' "$ifile")
if [ -L "$kfile" ]; then
kfile=$(readlink -e "$kfile")
fi
if [ -f /etc/flash-kernel/ignore-efi ] && [ -z "$FK_IGNORE_EFI" ]; then
FK_IGNORE_EFI="$(cat /etc/flash-kernel/ignore-efi)"
fi
if [ -d /sys/firmware/efi ] && [ "x$FK_IGNORE_EFI" != "xyes" ]; then
# skipping when detect EFI
echo "System running in EFI mode, skipping."
exit 0
fi
if ! check_supported "$machine"; then
error "Unsupported platform '$machine'."
fi
kfile_suffix=""
if ! kflavors=$(get_machine_field "$machine" "Kernel-Flavors") ; then
# Since no Kernel-Flavors were specified, allow any kernel.
kflavors="any"
fi
for kflavor in $kflavors ; do
if check_kflavors "$kvers" "$kflavor" ; then
kfile_suffix="$kflavor"
break
fi
done
if [ -z "$kfile_suffix" ]; then
echo "Kernel $kfile does not match any of the expected flavors ($kflavors), therefore not writing it to flash." >&2
exit 0
fi
echo "flash-kernel: installing version $kvers" >&2
mkarch="$(get_mkimage_architecture $kvers)"
machine_id="$(get_machine_field "$machine" "Machine-Id")" || :
method="$(get_machine_field "$machine" "Method")" || method="generic"
mtd_kernel="$(get_machine_field "$machine" "Mtd-Kernel")" || :
mtd_initrd="$(get_machine_field "$machine" "Mtd-Initrd")" || :
dtb_append="$(get_machine_field "$machine" "DTB-Append")" || :
dtb_append_from="$(get_machine_field "$machine" "DTB-Append-From")" || :
ukaddr="$(get_machine_field "$machine" "U-Boot-Kernel-Address")" || :
ukepoint="$(get_machine_field "$machine" "U-Boot-Kernel-Entry-Point")" || :
uiaddr="$(get_machine_field "$machine" "U-Boot-Initrd-Address")" || :
umaddr="$(get_machine_field "$machine" "U-Boot-Multi-Address")" || :
usaddr="$(get_machine_field "$machine" "U-Boot-Script-Address")" || :
usname="$(get_machine_field "$machine" "U-Boot-Script-Name")" || :
boot_device="$(get_machine_field "$machine" "Boot-Device")" || :
boot_kernel_path="$(get_machine_field "$machine" "Boot-Kernel-Path")" || :
boot_initrd_path="$(get_machine_field "$machine" "Boot-Initrd-Path")" || :
boot_kernel_path_version="$(get_machine_field "$machine" "Boot-Kernel-Path-Version")" || :
boot_initrd_path_version="$(get_machine_field "$machine" "Boot-Initrd-Path-Version")" || :
boot_script_path="$(get_machine_field "$machine" "Boot-Script-Path")" || :
boot_dtb_path="$(get_machine_field "$machine" "Boot-DTB-Path")" || :
boot_dtb_path_version="$(get_machine_field "$machine" "Boot-DTB-Path-Version")" || :
boot_multi_path="$(get_machine_field "$machine" "Boot-Multi-Path")" || :
android_boot_device="$(get_machine_field "$machine" "Android-Boot-Device")" || :
if [ -n "$dtb_append_from" ]; then
if dtb_append_required; then
dtb_append="yes"
else
dtb_append="no"
fi
fi
if [ -n "$mtd_kernel" ] || [ -n "$mtd_initrd" ]; then
if [ ! -e "$PROC_MTD" ]; then
error "$PROC_MTD doesn't exist"
fi
fi
if [ -n "$mtd_kernel" ]; then
kmtd=$(mtdchar "$mtd_kernel")
if [ -z "$kmtd" ]; then
error "Cannot find mtd partition '$mtd_kernel'"
fi
check_char_dev "$kmtd"
kmtdsize=$(mtdsize "$mtd_kernel")
kreqsize=$kfilesize
check_mtd_size "$mtd_kernel" $kreqsize $kmtdsize kernel
fi
if [ -n "$mtd_initrd" ]; then
imtd=$(mtdchar "$mtd_initrd")
if [ -z "$imtd" ]; then
error "Cannot find mtd partition '$mtd_initrd'"
fi
check_char_dev "$imtd"
imtdsize=$(mtdsize "$mtd_initrd")
ireqsize=$ifilesize
# encapsulating in an U-Boot image grows the size by 64 bytes
if [ -n "$uiaddr" ]; then
ireqsize=$(($ireqsize + 64))
fi
check_mtd_size "$mtd_initrd" $ireqsize $imtdsize initrd
fi
tmpdir=""
boot_mnt_dir=""
cleanups() {
rm -rf "$tmpdir"
if [ -d "$boot_mnt_dir" ]; then
umount "$boot_mnt_dir"
rmdir "$boot_mnt_dir"
fi
}
trap cleanups EXIT HUP INT QUIT ILL KILL SEGV PIPE TERM
self="$(basename "$0")"
tmpdir="$(mktemp -dt "$self.XXXXXXXX")"
case "$method" in
"android")
[ -n "$ifile" ] || error "Initrd required for android method"
part=""
largest_size="-1"
for p in "$android_boot_device"*[0-9]; do
if ! abootimg="$(LC_ALL=C abootimg -i "$p" 2>/dev/null)"; then
continue
fi
image_size="$(abootimg_get_image_size "$abootimg")"
if [ -n "$image_size" ] &&
[ "$image_size" -gt "$largest_size" ]; then
part="$p"
fi
done
if [ -z "$part" ]; then
error "Couldn't find Android boot partition on $android_boot_device"
fi
android_flash "$part"
;;
"bootspec")
{
printf "title\t\tDebian\n"
printf "version\t\t$(cat /etc/debian_version) ($desc)\n"
printf "linux\t\t$kfile\n"
[ -z "$ifile" ] || printf "initrd\t\t$ifile\n"
if [ -n "$dtb_name" ] ; then
printf "devicetree\t$dtbfile\n"
fi
printf "options\t\t$(get_kernel_cmdline)\n"
printf "linux-appendroot true\n"
} > "$tmpdir/debian.conf"
mkdir -p /loader/entries
mv "$tmpdir/debian.conf" /loader/entries/debian.conf
;;
"generic")
kernel="$kfile"
initrd="$ifile"
if [ "$dtb_append" = "yes" ]; then
dtb=$(find_dtb_file)
append_dtb "$kernel" "$dtb" "$tmpdir/kernel"
kernel="$tmpdir/kernel"
elif [ -n "$machine_id" ]; then
gen_kernel "$kernel" "$tmpdir/kernel" "$machine_id"
kernel="$tmpdir/kernel"
fi
if [ -n "$ukaddr" ]; then
if [ -n "$ukepoint" ]; then
mkimage_kernel "$ukaddr" "$ukepoint" "$desc" "$kernel" \
"$tmpdir/uImage"
else
mkimage_kernel "$ukaddr" "$ukaddr" "$desc" "$kernel" \
"$tmpdir/uImage"
fi
kernel="$tmpdir/uImage"
rm -f "$tmpdir/kernel"
fi
if [ -n "$umaddr" ]; then
mkimage_multi "$umaddr" "$desc" "$kernel" "$initrd" \
"$tmpdir/uImage"
rm -f "$tmpdir/kernel"
fi
if [ -n "$boot_device" ]; then
check_block_dev "$boot_device"
echo "Will use $boot_device as boot device." >&2
# don't use $tmpdir/boot as to not nuke it accidentally
# if umount fails
boot_mnt_dir="$(mktemp -dt "$self.XXXXXXXX")"
mount "$boot_device" "$boot_mnt_dir"
fi
if [ -n "$boot_kernel_path" ]; then
boot_kernel_path="$boot_mnt_dir/$boot_kernel_path"
if [ "$boot_kernel_path_version" = "yes" ]; then
boot_kernel_path="${boot_kernel_path}-${kvers}"
fi
# don't mv the original kernel
if [ "$kernel" = "$kfile" ]; then
cp "$kernel" "$tmpdir/kernel"
kernel="$tmpdir/kernel"
fi
backup_and_install "$kernel" "$boot_kernel_path"
elif [ -n "$kmtd" ]; then
flash_kernel "$tmpdir/uImage" "$kmtd" ""
rm -f "$tmpdir/uImage"
fi
if [ -n "$boot_multi_path" ]; then
backup_and_install "$tmpdir/uImage" "$boot_multi_path"
fi
if [ -n "$uiaddr" ]; then
[ -n "$ifile" ] || error "Initrd required for generic method with Initrd-Adress"
mkimage_initrd "$uiaddr" "$idesc" "$initrd" \
"$tmpdir/uInitrd"
initrd="$tmpdir/uInitrd"
fi
if [ -n "$boot_initrd_path" ]; then
[ -n "$ifile" ] || error "Initrd required for generic method with Boot-Initrd-Path"
boot_initrd_path="$boot_mnt_dir/$boot_initrd_path"
if [ "$boot_initrd_path_version" = "yes" ]; then
boot_initrd_path="${boot_initrd_path}-${kvers}"
fi
# don't mv the original initrd
if [ "$initrd" = "$ifile" ]; then
cp "$initrd" "$tmpdir/initrd"
initrd="$tmpdir/initrd"
fi
backup_and_install "$initrd" "$boot_initrd_path"
elif [ -n "$imtd" ]; then
[ -n "$ifile" ] || error "Initrd required for generic method with Mtd-Initrd"
ipad=0
# padding isn't needed for U-Boot images
if [ -z "$uiaddr" ]; then
ipad=$(($imtdsize - $ireqsize))
fi
flash_initrd "$initrd" "$imtd" $ipad
rm -f "$tmpdir/uInitrd"
fi