2_pack_firmware.sh

#!/bin/bash

# pack extracted root to CPIO file
cd extracted_root
#pax -w -x sv4cpio -s '>^\.>>' . > ../working_dir/new_main_container_filesystem.cpio # Kernel panic - not syncing: junk in compressed archive
#find . | awk 'length($0) > 2' | cpio --reproducible --quiet -R 0:0 -o -H newc > ../working_dir/new_main_container_filesystem.cpio # junk in compressed archive
#find . | cpio -oLv > ../working_dir/new_main_container_filesystem.cpio # no CPIO magic
#find . | cpio -oLv -H newc > ../working_dir/new_main_container_filesystem.cpio # not syncing: XZ-compressed data is corrupt
#pax -w -x cpio -s '~^[/]*~~' . > ../working_dir/new_main_container_filesystem.cpio #incorrect cpio method used: use -H newc option
#pax -w -x sv4cpio -s '~^[/]*~~' . > ../working_dir/new_main_container_filesystem.cpio # junk in compressed archive
#find . | cpio -o -H newc > ../working_dir/new_main_container_filesystem.cpio # Kernel panic - not syncing: junk in compressed archive
#pax -w -x sv4cpio  . > ../working_dir/new_main_container_filesystem.cpio #not syncing: junk in compressed archive
#find . | awk 'length($0) > 2' | cpio -o --device-independent -H newc > ../working_dir/new_main_container_filesystem.cpio #Kernel panic - not syncing: junk in compressed archive
#find . | awk 'length($0) > 2' | cpio -ov -H newc > ../working_dir/new_main_container_filesystem.cpio # Kernel panic - not syncing: junk in compressed archive
#find . | awk 'length($0) > 2' | cpio -ov -H newc -0 > ../working_dir/new_main_container_filesystem.cpio # Kernel panic - not syncing: junk in compressed archive
#find . | awk 'length($0) > 2' | cpio -o -c > ../working_dir/new_main_container_filesystem.cpio # Kernel panic - not syncing: incorrect cpio method used: use -H newc option
#find . | cpio -H newc -o > ../working_dir/new_main_container_filesystem.cpio # Kernel panic - not syncing: junk in compressed archive
#find . -print -depth | awk 'length($0) > 1' | cpio -o -H newc > ../working_dir/new_main_container_filesystem.cpio # Kernel panic - not syncing: junk in compressed archive
#find . | cpio -H newc -o -B > ../working_dir/new_main_container_filesystem.cpio
#find . -print0 | cpio --null -ov --format=newc  --device-independent --ignore-devno --swap > ../working_dir/new_main_container_filesystem.cpio
find . | cpio -o --format=newc  --device-independent --ignore-devno > ../working_dir/new_main_container_filesystem.cpio
cd ..

# ERROR IS IN PACKING TO CPIO

# just workaround to test pakcing
#cp working_dir/main_container_filesystem  working_dir/new_main_container_filesystem.cpio

# compress CPIO to XZ file
cd working_dir/
xz --compress --check=crc32 --lzma2=dict=1024KiB --keep new_main_container_filesystem.cpio
mv new_main_container_filesystem.cpio.xz new_main_container_filesystem.xz
cd ..

# create merged container
cat working_dir/main_container_header.bin working_dir/new_main_container_filesystem.xz > working_dir/new_main_container_extracted.bin

# pack container using LZMA
lzma --compress --keep working_dir/new_main_container_extracted.bin
mv working_dir/new_main_container_extracted.bin.lzma working_dir/new_main_container.lzma

# create uImage header
mkimage -A MIPS -O linux -T kernel -C lzma -a 0x80000000 -e 0x8000C150 -n "Linux Kernel Image" -d working_dir/new_main_container.lzma working_dir/new_uimage_with_lzma.bin

# merge bootloader, uImage header and firmware
cat working_dir/u-boot.bin working_dir/new_uimage_with_lzma.bin > working_dir/tmp_merged_firmware.bin

# create final flash file with padding
dd if=/dev/zero ibs=1k count=4096 | tr "\000" "\377" > new_firmware.bin
dd if=working_dir/tmp_merged_firmware.bin of=new_firmware.bin conv=notrunc

# clean up
rm working_dir/tmp_merged_firmware.bin
cp new_firmware.bin /home/archont/new_firmware.bin