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https://github.com/openwrt/openwrt.git
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53 lines
1.5 KiB
Bash
53 lines
1.5 KiB
Bash
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#/bin/sh
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#
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# Copyright (C) 2011 OpenWrt.org
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#
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# This is free software, licensed under the GNU General Public License v2.
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# See /LICENSE for more information.
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#
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usage() {
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echo "Usage: $0 <out file path> <kernel path> <rootfs path>"
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rm -f $CFG_OUT
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exit 1
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}
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[ "$#" -lt 3 ] && usage
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FLASH_BS=262144
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CHECK_BS=65536
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MAX_PART_SIZE=7168
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CFG_OUT=$1
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KERNEL_PATH=$2
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KERNEL_FLASH_ADDR=0x1c0000
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KERNEL_SIZE=$(stat -c%s "$KERNEL_PATH")
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KERNEL_MD5=$(md5=$(md5sum $KERNEL_PATH); echo ${md5%% *})
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KERNEL_PART_SIZE=$(size=$(($KERNEL_SIZE / $FLASH_BS)); [ $(($size * $FLASH_BS)) -lt $KERNEL_SIZE ] && size=$(($size + 1)); echo $(($size * $FLASH_BS / 1024)))
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ROOTFS_PATH=$3
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ROOTFS_FLASH_ADDR=$(addr=$(($KERNEL_FLASH_ADDR + ($KERNEL_PART_SIZE * 1024))); printf "0x%x" $addr)
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ROOTFS_SIZE=$(stat -c%s "$ROOTFS_PATH")
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ROOTFS_CHECK_BLOCKS=$((($ROOTFS_SIZE / $CHECK_BS) - 1))
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ROOTFS_MD5=$(md5=$(dd if=$ROOTFS_PATH bs=$CHECK_BS count=$ROOTFS_CHECK_BLOCKS 2>&- | md5sum); echo ${md5%% *})
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ROOTFS_CHECK_SIZE=$(printf '0x%x' $(($ROOTFS_CHECK_BLOCKS * $CHECK_BS)))
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ROOTFS_PART_SIZE=$(($MAX_PART_SIZE - $KERNEL_PART_SIZE))
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cat << EOF > $CFG_OUT
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[vmlinux]
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filename=kernel
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md5sum=$KERNEL_MD5
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flashaddr=$KERNEL_FLASH_ADDR
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checksize=0x0
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cmd_success=setenv bootseq 1,2; setenv kernel_size_1 $KERNEL_PART_SIZE; saveenv
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cmd_fail=reset
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[rootfs]
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filename=rootfs
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md5sum=$ROOTFS_MD5
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flashaddr=$ROOTFS_FLASH_ADDR
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checksize=$ROOTFS_CHECK_SIZE
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cmd_success=setenv bootseq 1,2; setenv kernel_size_1 $KERNEL_PART_SIZE; setenv rootfs_size_1 $ROOTFS_PART_SIZE; saveenv
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cmd_fail=reset
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EOF
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