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# Copyright (C) 2021 OpenWrt.org
#
. /lib/functions.sh
emmc_upgrade_tar() {
local tar_file="$1"
[ "$CI_KERNPART" -a -z "$EMMC_KERN_DEV" ] && export EMMC_KERN_DEV="$(find_mmc_part $CI_KERNPART $CI_ROOTDEV)"
[ "$CI_ROOTPART" -a -z "$EMMC_ROOT_DEV" ] && export EMMC_ROOT_DEV="$(find_mmc_part $CI_ROOTPART $CI_ROOTDEV)"
[ "$CI_DATAPART" -a -z "$EMMC_DATA_DEV" ] && export EMMC_DATA_DEV="$(find_mmc_part $CI_DATAPART $CI_ROOTDEV)"
local has_kernel
local has_rootfs
local board_dir=$(tar tf "$tar_file" | grep -m 1 '^sysupgrade-.*/$')
board_dir=${board_dir%/}
tar tf "$tar_file" ${board_dir}/kernel 1>/dev/null 2>/dev/null && has_kernel=1
tar tf "$tar_file" ${board_dir}/root 1>/dev/null 2>/dev/null && has_rootfs=1
[ "$has_kernel" = 1 -a "$EMMC_KERN_DEV" ] &&
export EMMC_KERNEL_BLOCKS=$(($(tar xf "$tar_file" ${board_dir}/kernel -O | dd of="$EMMC_KERN_DEV" bs=512 2>&1 | grep "records out" | cut -d' ' -f1)))
[ "$has_rootfs" = 1 -a "$EMMC_ROOT_DEV" ] && {
export EMMC_ROOTFS_BLOCKS=$(($(tar xf "$tar_file" ${board_dir}/root -O | dd of="$EMMC_ROOT_DEV" bs=512 2>&1 | grep "records out" | cut -d' ' -f1)))
# Account for 64KiB ROOTDEV_OVERLAY_ALIGN in libfstools
EMMC_ROOTFS_BLOCKS=$(((EMMC_ROOTFS_BLOCKS + 127) & ~127))
}
if [ -z "$UPGRADE_BACKUP" ]; then
if [ "$EMMC_DATA_DEV" ]; then
dd if=/dev/zero of="$EMMC_DATA_DEV" bs=512 count=8
elif [ "$EMMC_ROOTFS_BLOCKS" ]; then
dd if=/dev/zero of="$EMMC_ROOT_DEV" bs=512 seek=$EMMC_ROOTFS_BLOCKS count=8
elif [ "$EMMC_KERNEL_BLOCKS" ]; then
dd if=/dev/zero of="$EMMC_KERN_DEV" bs=512 seek=$EMMC_KERNEL_BLOCKS count=8
fi
fi
}
emmc_upgrade_fit() {
local fit_file="$1"
[ "$CI_KERNPART" -a -z "$EMMC_KERN_DEV" ] && export EMMC_KERN_DEV="$(find_mmc_part $CI_KERNPART $CI_ROOTDEV)"
if [ "$EMMC_KERN_DEV" ]; then
export EMMC_KERNEL_BLOCKS=$(($(get_image "$fit_file" | fwtool -i /dev/null -T - | dd of="$EMMC_KERN_DEV" bs=512 2>&1 | grep "records out" | cut -d' ' -f1)))
[ -z "$UPGRADE_BACKUP" ] && dd if=/dev/zero of="$EMMC_KERN_DEV" bs=512 seek=$EMMC_KERNEL_BLOCKS count=8
fi
}
emmc_copy_config() {
if [ "$EMMC_DATA_DEV" ]; then
dd if="$UPGRADE_BACKUP" of="$EMMC_DATA_DEV" bs=512
elif [ "$EMMC_ROOTFS_BLOCKS" ]; then
dd if="$UPGRADE_BACKUP" of="$EMMC_ROOT_DEV" bs=512 seek=$EMMC_ROOTFS_BLOCKS
elif [ "$EMMC_KERNEL_BLOCKS" ]; then
dd if="$UPGRADE_BACKUP" of="$EMMC_KERN_DEV" bs=512 seek=$EMMC_KERNEL_BLOCKS
fi
}
emmc_do_upgrade() {
local file_type=$(identify_magic_long "$(get_magic_long "$1")")
case "$file_type" in
"fit") emmc_upgrade_fit $1;;
*) emmc_upgrade_tar $1;;
esac
}
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