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Lakka-LibreELEC/packages/tools/bcm2835-bootloader/files/update.sh
Matthias Reichl fe21297a01 RPi: make bootloader files optional
RPi4 only needs start.elf/fixup.dat, RPi5 doesn't need any of them

Signed-off-by: Matthias Reichl <hias@horus.com>
2023-10-08 11:57:04 +02:00

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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (C) 2009-2014 Stephan Raue (stephan@openelec.tv)
# Copyright (C) 2016-present Team LibreELEC (https://libreelec.tv)
[ -z "$BOOT_ROOT" ] && BOOT_ROOT="/flash"
[ -z "$SYSTEM_ROOT" ] && SYSTEM_ROOT=""
MIN_CONFIG_TXT_VERSION=1
# mount $BOOT_ROOT r/w
mount -o remount,rw $BOOT_ROOT
# Something has gone horribly wrong... clean up
[ -s $BOOT_ROOT/overlays ] || rm -fr $BOOT_ROOT/overlays $BOOT_ROOT/FSCK*.REC
# update bootloader files
cp -p $SYSTEM_ROOT/usr/share/bootloader/LICENCE* $BOOT_ROOT
for f in bootcode.bin fixup.dat start.elf ; do
if [ -f "${SYSTEM_ROOT}/usr/share/bootloader/$f" ]; then
cp -p "${SYSTEM_ROOT}/usr/share/bootloader/$f" "${BOOT_ROOT}"
fi
done
rm -f $BOOT_ROOT/bcm283*.dtb # cleanup excess dtb's used by upstream kernels (ie. not LE)
cp -p $SYSTEM_ROOT/usr/share/bootloader/*.dtb $BOOT_ROOT
cp -pR $SYSTEM_ROOT/usr/share/bootloader/overlays $BOOT_ROOT
# cleanup unneeded files
rm -rf $BOOT_ROOT/loader.bin
rm -rf $BOOT_ROOT/fixup_x.dat
rm -rf $BOOT_ROOT/start_x.elf
# some config.txt magic
if [ ! -f $BOOT_ROOT/config.txt ]; then
cp -p $SYSTEM_ROOT/usr/share/bootloader/config.txt $BOOT_ROOT
else
CONFIG_TXT_VERSION=$( \
grep "^# config.txt version v[0-9]\+" $BOOT_ROOT/config.txt | \
head -n 1 | \
sed 's/^# config.txt version v\([0-9]\+\) .*$/\1/' \
)
if [ ${CONFIG_TXT_VERSION:-0} -lt $MIN_CONFIG_TXT_VERSION ]; then
mv -f $BOOT_ROOT/config.txt $BOOT_ROOT/config.txt.old
cp -p $SYSTEM_ROOT/usr/share/bootloader/config.txt $BOOT_ROOT/config.txt
echo "WARNING incompatible config.txt detected, replacing with default."
echo "Previous config.txt has been moved to config.txt.old"
fi
fi
# Add distro config files
for distro in "$SYSTEM_ROOT/usr/share/bootloader/distroconfig"*.txt ; do
if [ -f "${distro}" ]; then
cp -p "${distro}" $BOOT_ROOT
fi
done
# mount $BOOT_ROOT r/o
sync
mount -o remount,ro $BOOT_ROOT