cellularmitosis · April 9, 2025 18:44
diff --git a/README.md b/README.md
diff --git a/make-flash-card-ci20-sd.sh b/make-flash-card-ci20-sd.sh
 #!/bin/bash
 #
 # Copyright (c) 2013 Imagination Technologies
 # Author: Paul Burton <[email protected]>
 #
 # Creates a bootable SD card for the CI20 using a kernel and rootfs tarball.
 #
 # Usage:
 #   ./make-flash-card.sh /dev/sdX /path/to/vmlinux /path/to/rootfs.tar.xz
 #   the path to vmlinux can be uImage as well.
 #   Please use full paths while passing arguments. i.e. /home/user/ci20/linux/kernel
 #   instead of just kernel or ../../kernel. Even if in the same directory


 set -e -o pipefail
 set -x
 tmpDir=`mktemp -d`

 cleanup()
 {
  echo "Cleaning up..."
  [ -z "${sdMount}" ] || sudo umount ${sdMount}
  sync; sync; sync
  rm -rf ${tmpDir}
  trap - EXIT INT TERM
 }
 trap cleanup EXIT INT TERM

 die()
 {
  echo "$@" >&2
  exit 1
 }

 # check device
 device="$1"
 [ -e "${device}" ] || die "Device '${device}' not found"
 grep ${device} /etc/mtab >/dev/null && \
  die "Device '${device}' contains mounted partitions"

 # check kernel
 vmlinux="$2"
 [ -e "${vmlinux}" ] || die "Kernel (vmlinux) '${vmlinux}' not found"

 # check root filesystem
 rootTar="$3"
 [ -e "${rootTar}" ] || die "Root filesystem tarball '${rootTar}' not found"

 # default environment
 [ ! -z "${CROSS_COMPILE}" ] || export CROSS_COMPILE=mips-linux-gnu-
 [ ! -z "${UBOOT_REPO}" ] || UBOOT_REPO="https://github.com/MIPS/CI20_u-boot"
 [ ! -z "${UBOOT_BRANCH}" ] || UBOOT_BRANCH="ci20-v2013.10"

 if [ -z "${JOBS}" ]; then
  cpuCount=`grep -Ec '^processor' /proc/cpuinfo`
  JOBS=`echo "${cpuCount} * 2" | bc`
 fi

 # check for tools
 which bc >/dev/null || die "No bc in \$PATH"
 which fakeroot >/dev/null || die "No fakeroot in \$PATH"
 which sfdisk >/dev/null || die "No sfdisk in \$PATH"
 which mkfs.ext4 >/dev/null || die "No mkfs.ext4 in \$PATH"
 which mkfs.ubifs >/dev/null || die "No mkfs.ubifs in \$PATH"
 ${CROSS_COMPILE}gcc --version >/dev/null 2>&1 || \
  die "No ${CROSS_COMPILE}gcc, set \$CROSS_COMPILE"
 ${CROSS_COMPILE}objcopy --version >/dev/null 2>&1 || \
  die "No ${CROSS_COMPILE}objcopy, set \$CROSS_COMPILE"

 # partition SD/MMC card
 sudo sfdisk ${device} -L << EOF
 2M,,L
 EOF

 # Deleting old uboot environment
 sudo dd if=/dev/zero of=${device} bs=1K seek=526 count=32

 # create ext2 partition
 sudo mkfs.ext2 ${device}1

 # mount the partition
 sdMount=${tmpDir}/sd_mount
 mkdir ${sdMount}
 sudo mount ${device}1 ${sdMount}

 # clone u-boot
 ubootDir=$tmpDir/u-boot
 git clone ${UBOOT_REPO} -b ${UBOOT_BRANCH} --depth 1 $ubootDir

 # build & install MMC u-boot
 pushd $ubootDir
  make distclean
  make ARCH=mips ci20_mmc
 #  make -j${JOBS}
  maxsize=14336
  cursize=$(wc -c < spl/u-boot-spl.bin)
  # JZ4780 internal boot ROM reads 14KB (14336 bytes) of data from the boot device
  if [ $cursize -ge $maxsize ]; then
    die "Size '${cursize}' is over '${maxsize}' bytes"
  fi
  sudo dd if=spl/u-boot-spl.bin of=${device} obs=512 seek=1
  sudo dd if=u-boot.img of=${device} obs=1K seek=14
 popd

 echo "Untarring rootfs into sd card"
 sudo tar -xaf ${rootTar} -C ${sdMount}

 if file "${vmlinux}" | grep uImage >/dev/null; then
  # already a uImage
 	if [ ! -d "${sdMount}/boot" ]; then
 	    mkdir -p "${sdMount}/boot";
 	fi;

 	sudo cp -v "${vmlinux}" ${sdMount}/boot/vmlinux.img
 else
  # generate kernel uImage
  vmlinuxBin=${tmpDir}/vmlinux.bin
  ${CROSS_COMPILE}objcopy -O binary ${vmlinux} ${vmlinuxBin}
  ${ubootDir}/tools/mkimage \
    -A mips -O linux -T kernel -C none -a 0x80010000 \
    -e `readelf -h ${vmlinux} | grep 'Entry point' | awk '{print $4}'` \
    -n "CI20 Linux" -d ${vmlinuxBin} ${sdMount}/boot/vmlinux.img
 fi

 echo "Deleting /etc/fstab"
 sudo rm -f ${sdMount}/etc/fstab

 echo "SD contents:"
 ls -hl ${sdMount}/

 echo "Converting from ext2 to ext4"
 sudo umount ${sdMount}
 unset sdMount
 sudo tune2fs -O extents,uninit_bg,dir_index,has_journal ${device}1

 echo "Finished, wait for clean up before removing your card!"
 sync
	#!/bin/bash
	#
	# Copyright (c) 2013 Imagination Technologies
	# Author: Paul Burton <[email protected]>
	#
	# Creates a bootable SD card for the CI20 using a kernel and rootfs tarball.
	#
	# Usage:
	# ./make-flash-card.sh /dev/sdX /path/to/vmlinux /path/to/rootfs.tar.xz
	# the path to vmlinux can be uImage as well.
	# Please use full paths while passing arguments. i.e. /home/user/ci20/linux/kernel
	# instead of just kernel or ../../kernel. Even if in the same directory


	set -e -o pipefail
	set -x
	tmpDir=`mktemp -d`

	cleanup()
	{
	echo "Cleaning up..."
	[ -z "${sdMount}" ] \|\| sudo umount ${sdMount}
	sync; sync; sync
	rm -rf ${tmpDir}
	trap - EXIT INT TERM
	}
	trap cleanup EXIT INT TERM

	die()
	{
	echo "$@" >&2
	exit 1
	}

	# check device
	device="$1"
	[ -e "${device}" ] \|\| die "Device '${device}' not found"
	grep ${device} /etc/mtab >/dev/null && \
	die "Device '${device}' contains mounted partitions"

	# check kernel
	vmlinux="$2"
	[ -e "${vmlinux}" ] \|\| die "Kernel (vmlinux) '${vmlinux}' not found"

	# check root filesystem
	rootTar="$3"
	[ -e "${rootTar}" ] \|\| die "Root filesystem tarball '${rootTar}' not found"

	# default environment
	[ ! -z "${CROSS_COMPILE}" ] \|\| export CROSS_COMPILE=mips-linux-gnu-
	[ ! -z "${UBOOT_REPO}" ] \|\| UBOOT_REPO="https://github.com/MIPS/CI20_u-boot"
	[ ! -z "${UBOOT_BRANCH}" ] \|\| UBOOT_BRANCH="ci20-v2013.10"

	if [ -z "${JOBS}" ]; then
	cpuCount=`grep -Ec '^processor' /proc/cpuinfo`
	JOBS=`echo "${cpuCount} * 2" \| bc`
	fi

	# check for tools
	which bc >/dev/null \|\| die "No bc in \$PATH"
	which fakeroot >/dev/null \|\| die "No fakeroot in \$PATH"
	which sfdisk >/dev/null \|\| die "No sfdisk in \$PATH"
	which mkfs.ext4 >/dev/null \|\| die "No mkfs.ext4 in \$PATH"
	which mkfs.ubifs >/dev/null \|\| die "No mkfs.ubifs in \$PATH"
	${CROSS_COMPILE}gcc --version >/dev/null 2>&1 \|\| \
	die "No ${CROSS_COMPILE}gcc, set \$CROSS_COMPILE"
	${CROSS_COMPILE}objcopy --version >/dev/null 2>&1 \|\| \
	die "No ${CROSS_COMPILE}objcopy, set \$CROSS_COMPILE"

	# partition SD/MMC card
	sudo sfdisk ${device} -L << EOF
	2M,,L
	EOF

	# Deleting old uboot environment
	sudo dd if=/dev/zero of=${device} bs=1K seek=526 count=32

	# create ext2 partition
	sudo mkfs.ext2 ${device}1

	# mount the partition
	sdMount=${tmpDir}/sd_mount
	mkdir ${sdMount}
	sudo mount ${device}1 ${sdMount}

	# clone u-boot
	ubootDir=$tmpDir/u-boot
	git clone ${UBOOT_REPO} -b ${UBOOT_BRANCH} --depth 1 $ubootDir

	# build & install MMC u-boot
	pushd $ubootDir
	make distclean
	make ARCH=mips ci20_mmc
	# make -j${JOBS}
	maxsize=14336
	cursize=$(wc -c < spl/u-boot-spl.bin)
	# JZ4780 internal boot ROM reads 14KB (14336 bytes) of data from the boot device
	if [ $cursize -ge $maxsize ]; then
	die "Size '${cursize}' is over '${maxsize}' bytes"
	fi
	sudo dd if=spl/u-boot-spl.bin of=${device} obs=512 seek=1
	sudo dd if=u-boot.img of=${device} obs=1K seek=14
	popd

	echo "Untarring rootfs into sd card"
	sudo tar -xaf ${rootTar} -C ${sdMount}

	if file "${vmlinux}" \| grep uImage >/dev/null; then
	# already a uImage
	if [ ! -d "${sdMount}/boot" ]; then
	mkdir -p "${sdMount}/boot";
	fi;

	sudo cp -v "${vmlinux}" ${sdMount}/boot/vmlinux.img
	else
	# generate kernel uImage
	vmlinuxBin=${tmpDir}/vmlinux.bin
	${CROSS_COMPILE}objcopy -O binary ${vmlinux} ${vmlinuxBin}
	${ubootDir}/tools/mkimage \
	-A mips -O linux -T kernel -C none -a 0x80010000 \
	-e `readelf -h ${vmlinux} \| grep 'Entry point' \| awk '{print $4}'` \
	-n "CI20 Linux" -d ${vmlinuxBin} ${sdMount}/boot/vmlinux.img
	fi

	echo "Deleting /etc/fstab"
	sudo rm -f ${sdMount}/etc/fstab

	echo "SD contents:"
	ls -hl ${sdMount}/

	echo "Converting from ext2 to ext4"
	sudo umount ${sdMount}
	unset sdMount
	sudo tune2fs -O extents,uninit_bg,dir_index,has_journal ${device}1

	echo "Finished, wait for clean up before removing your card!"
	sync