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|
#!/bin/sh
## Copyright (C) 2006-2012 Daniel Baumann <daniel.baumann@progress-technologies.net>
## Copyright (C) 2016-2017 Riku Voipio <riku.voipio@linaro.org>
##
## This program comes with ABSOLUTELY NO WARRANTY; for details see COPYING.
## This is free software, and you are welcome to redistribute it
## under certain conditions; see COPYING for details.
set -e
_U_BOOT_DIRECTORY="/boot/extlinux"
Update ()
{
# Upate target file using source content
_TARGET="${1}"
_SOURCE="${2}"
_TMPFILE="${_TARGET}.tmp"
rm -f "${_TMPFILE}"
echo "${_SOURCE}" > "${_TMPFILE}"
if [ -e "${_TARGET}" ] && cmp -s "${_TARGET}" "${_TMPFILE}"
then
rm -f "${_TMPFILE}"
else
# FIXME: should use fsync here
echo "P: Updating ${_TARGET}..."
mv -f "${_TMPFILE}" "${_TARGET}"
fi
}
# FIXME: switch to check extlinux file can be written to
# User is unprivileged
if [ "$(id -u)" -ne 0 ]
then
echo "E: need root privileges"
exit 1
fi
# Redirect stdout to stderr due Debconf usage
exec 1>&2
. /usr/share/u-boot-menu/read-config
# Checking extlinux directory
printf '%s' "P: Checking for EXTLINUX directory..."
# Creating extlinux directory
if [ ! -e "${_U_BOOT_DIRECTORY}" ]
then
echo " not found."
printf '%s' "P: Creating EXTLINUX directory..."
mkdir -p "${_U_BOOT_DIRECTORY}"
echo " done: ${_U_BOOT_DIRECTORY}"
else
echo " found."
fi
# Find parameter for root from fstab
if [ -z "${U_BOOT_ROOT}" ]
then
# Find root partition
while read _LINE
do
read _FS_SPEC _FS_FILE _FS_VFSTYPE _FS_MNTOPS _FS_FREQ _FS_PASSNO << EOF
${_LINE}
EOF
if [ "${_FS_FILE}" = "/" ]
then
case "${_FS_SPEC}" in
"#"*) ;;
*) U_BOOT_ROOT="root=${_FS_SPEC}"
break ;;
esac
fi
done < /etc/fstab
fi
# if not in fstab, try from current kernel arguments
if [ -z "${U_BOOT_ROOT}" ]
then
for param in $(cat /proc/cmdline)
do
case $param in
root=*)
U_BOOT_ROOT="$param"
break
;;
esac
done
fi
# Create extlinux.conf
_CONFIG="\
## ${_U_BOOT_DIRECTORY}/extlinux.conf
##
## IMPORTANT WARNING
##
## The configuration of this file is generated automatically.
## Do not edit this file manually, use: u-boot-update
default ${U_BOOT_DEFAULT}
menu title U-Boot menu
prompt ${U_BOOT_PROMPT}
timeout ${U_BOOT_TIMEOUT}
"
# Find linux versions
_KERNELS=$(linux-version list --paths | linux-version sort --reverse | sed -e 's,.*/boot/,,g')
for _KERNEL in ${_KERNELS}
do
# Strip kernel prefix to derive version.
_VERSION=${_KERNEL#*-}
echo "P: Writing config for ${_KERNEL}..."
_NUMBER="${_NUMBER:-0}"
_ENTRY="${_ENTRY:-1}"
if [ -e "/boot/${U_BOOT_INITRD}-${_VERSION}" ]
then
_INITRD="initrd ${_BOOT_DIRECTORY}/${U_BOOT_INITRD}-${_VERSION}"
elif [ -e "/boot/${U_BOOT_INITRD}" ]
then
_INITRD="initrd ${_BOOT_DIRECTORY}/${U_BOOT_INITRD}"
else
_INITRD=""
fi
if [ -e "${U_BOOT_FDT}" ] && [ -n "${U_BOOT_FDT}" ] && [ "/" = $(echo "${U_BOOT_FDT}" | head -c1) ]
then
_FDT="fdt ${U_BOOT_FDT}"
elif [ -e "${_BOOT_PATH}${U_BOOT_FDT_DIR}${_VERSION}/${U_BOOT_FDT}" ] && [ -n "${U_BOOT_FDT}" ]
then
_FDT="fdt ${U_BOOT_FDT_DIR}${_VERSION}/${U_BOOT_FDT}"
elif [ -d "${_BOOT_PATH}${U_BOOT_FDT_DIR}${_VERSION}/" ]
then
_FDT="fdtdir ${U_BOOT_FDT_DIR}${_VERSION}/"
elif [ -f "${_BOOT_PATH}/${U_BOOT_FDT:-dtb-${_VERSION}}" ]
then
_FDT="fdt /${U_BOOT_FDT:-dtb-${_VERSION}}"
else
_FDT=""
fi
if [ -d "${_BOOT_PATH}/${U_BOOT_FDT_OVERLAYS_DIR}${_VERSION}" ]
then
_U_BOOT_FDT_OVERLAYS_DIR=${U_BOOT_FDT_OVERLAYS_DIR}${_VERSION}
elif [ -d "${_BOOT_PATH}/${U_BOOT_FDT_OVERLAYS_DIR}" ]
then
_U_BOOT_FDT_OVERLAYS_DIR=${U_BOOT_FDT_OVERLAYS_DIR}
else
_U_BOOT_FDT_OVERLAYS_DIR=""
fi
if [ -d "${_BOOT_PATH}/${_U_BOOT_FDT_OVERLAYS_DIR}" ]
then
_DTBO_LIST=""
if [ -n "${U_BOOT_FDT_OVERLAYS}" ]
then
for _DTBO in ${U_BOOT_FDT_OVERLAYS}
do
if [ -f "${_BOOT_PATH}/${_U_BOOT_FDT_OVERLAYS_DIR}/${_DTBO}" ]
then
_DTBO_LIST="${_DTBO_LIST} ${_U_BOOT_FDT_OVERLAYS_DIR}/${_DTBO}"
fi
done
else
for _DTBO_PATH in "${_BOOT_PATH}/${_U_BOOT_FDT_OVERLAYS_DIR}/"*.dtbo
do
if [ -f "${_DTBO_PATH}" ]
then
_DTBO=$(basename "${_DTBO_PATH}")
_DTBO_LIST="${_DTBO_LIST} ${_U_BOOT_FDT_OVERLAYS_DIR}/${_DTBO}"
fi
done
fi
if [ -n "${_DTBO_LIST}" ]
then
_FDTOVERLAYS="fdtoverlays ${_DTBO_LIST}"
fi
fi
if echo "${U_BOOT_ALTERNATIVES}" | grep -q default
then
# Writing default entry
_CONFIG="${_CONFIG}
label l${_NUMBER}
menu label ${U_BOOT_MENU_LABEL} ${_VERSION}
linux ${_BOOT_DIRECTORY}/${_KERNEL}
${_INITRD}
${_FDT}
${_FDTOVERLAYS}
append ${U_BOOT_ROOT} ${U_BOOT_PARAMETERS}"
fi
if echo "${U_BOOT_ALTERNATIVES}" | grep -q recovery
then
# Writing recovery entry
_CONFIG="${_CONFIG}
label l${_NUMBER}r
menu label ${U_BOOT_MENU_LABEL} ${_VERSION} (rescue target)
linux ${_BOOT_DIRECTORY}/${_KERNEL}
${_INITRD}
${_FDT}
append ${U_BOOT_ROOT} $(echo "${U_BOOT_PARAMETERS}" | sed -e 's| quiet||') single
"
fi
_NUMBER="$((_NUMBER + 1))"
if [ "${U_BOOT_ENTRIES}" = "${_ENTRY}" ]
then
break
fi
done
_NUMBER=""
Update "${_U_BOOT_DIRECTORY}/extlinux.conf" "${_CONFIG}"
|
