freedombone-image-hardware-setup

#!/bin/sh
#
# .---.                  .              .
# |                      |              |
# |--- .--. .-.  .-.  .-.|  .-. .--.--. |.-.  .-. .--.  .-.
# |    |   (.-' (.-' (   | (   )|  |  | |   )(   )|  | (.-'
# '    '     --'  --'  -' -  -' '  '   -' -'   -' '   -  --'
#
#                    Freedom in the Cloud
#
# Hardware setup based on bin/freedombox-hardware-setup from freedom-maker
#
# License
# =======
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

PROJECT_NAME='freedombone'

export TEXTDOMAIN=${PROJECT_NAME}-image-hardware-setup
export TEXTDOMAINDIR="/usr/share/locale"

enable_serial_console() {
	# By default, spawn a console on the serial port
	device="$1"
	echo $"Adding a getty on the serial port"
	echo "T0:12345:respawn:/sbin/getty -L $device 115200 vt100" >> /etc/inittab
}

beaglebone_setup_boot() {
	# Setup uEnv.txt
	if grep -q btrfs /etc/fstab ; then
		fstype=btrfs
	else
		fstype=ext4
	fi
	kernelVersion=$(ls /usr/lib/*/am335x-boneblack.dtb | head -1 | cut -d/ -f4)
	version=$(echo $kernelVersion | sed 's/linux-image-\(.*\)/\1/')
	initRd=initrd.img-$version
	vmlinuz=vmlinuz-$version

	# uEnv.txt for Beaglebone
	# based on https://github.com/beagleboard/image-builder/blob/master/target/boot/beagleboard.org.txt
	cat >> /boot/uEnv.txt <<EOF
mmcroot=/dev/mmcblk0p2 ro
mmcrootfstype=$fstype rootwait fixrtc
mmcrootflags=subvol=@

console=ttyO0,115200n8

kernel_file=$vmlinuz
initrd_file=$initRd

loadaddr=0x80200000
initrd_addr=0x81000000
fdtaddr=0x80F80000

initrd_high=0xffffffff
fdt_high=0xffffffff

loadkernel=load mmc \${mmcdev}:\${mmcpart} \${loadaddr} \${kernel_file}
loadinitrd=load mmc \${mmcdev}:\${mmcpart} \${initrd_addr} \${initrd_file}; setenv initrd_size \${filesize}
loadfdt=load mmc \${mmcdev}:\${mmcpart} \${fdtaddr} /dtbs/\${fdtfile}

loadfiles=run loadkernel; run loadinitrd; run loadfdt
mmcargs=setenv bootargs console=tty0 console=\${console} root=\${mmcroot} rootfstype=\${mmcrootfstype} rootflags=\${mmcrootflags}

uenvcmd=run loadfiles; run mmcargs; bootz \${loadaddr} \${initrd_addr}:\${initrd_size} \${fdtaddr}
EOF

	mkdir -p /boot/dtbs
	cp /usr/lib/linux-image-*-armmp/* /boot/dtbs
}

beaglebone_flash() {
	# allow flash-kernel to work without valid /proc contents
	# ** this doesn't *really* work, since there are too many checks
	#    that fail in an emulated environment!  We'll have to do it by
	#    hand below anyway...
	export FK_MACHINE="TI AM335x BeagleBone"
	apt-get install -y flash-kernel
}

beaglebone_repack_kernel() {
	# process installed kernel to create uImage, uInitrd, dtb
	# using flash-kernel would be a good approach, except it fails in the
	# cross build environment due to too many environment checks...
	#FK_MACHINE="TI AM335x BeagleBone" flash-kernel
	#  so, let's do it manually...

	# flash-kernel's hook-functions provided to mkinitramfs have the
	# unfortunate side-effect of creating /conf/param.conf in the initrd
	# when run from our emulated chroot environment, which means our root=
	# on the kernel command line is completely ignored!  repack the initrd
	# to remove this evil...

	echo "info: repacking beaglebone kernel and initrd"

	kernelVersion=$(ls /usr/lib/*/am335x-boneblack.dtb | head -1 | cut -d/ -f4)
	version=$(echo $kernelVersion | sed 's/linux-image-\(.*\)/\1/')
	initRd=initrd.img-$version
	vmlinuz=vmlinuz-$version

	mkdir /tmp/initrd-repack

	(cd /tmp/initrd-repack ; \
	 zcat /boot/$initRd | cpio -i ; \
	 rm -f conf/param.conf ; \
	 find . | cpio --quiet -o -H newc | \
		 gzip -9 > /boot/$initRd )

	rm -rf /tmp/initrd-repack

	(cd /boot ; \
	 cp /usr/lib/$kernelVersion/am335x-boneblack.dtb dtb ; \
	 cat $vmlinuz dtb >> temp-kernel ; \
	 mkimage -A arm -O linux -T kernel -n "Debian kernel ${version}" \
			 -C none -a 0x80200000 -e 0x80200000 -d temp-kernel uImage ; \
	 rm -f temp-kernel ; \
	 mkimage -A arm -O linux -T ramdisk -C gzip -a 0x81000000 -e 0x81000000 \
			 -n "Debian ramdisk ${version}" \
			 -d $initRd uInitrd )
}

odroidc2_setup_boot() {
	dtb="$1"

	# Setup uEnv.txt
	if grep -q btrfs /etc/fstab ; then
		fstype=btrfs
	else
		fstype=ext4
	fi
	kernelVersion=$(ls /usr/lib/*/${dtb}.dtb | head -1 | cut -d/ -f4)
	version=$(echo $kernelVersion | sed 's/linux-image-\(.*\)/\1/')
	initRd=initrd.img-$version
	vmlinuz=vmlinuz-$version

	# based on http://odroid.com/dokuwiki/doku.php?id=en:c2_building_u-boot
	cat >> /boot/uEnv.txt <<EOF
mmcroot=/dev/mmcblk0p2 ro
mmcrootfstype=$fstype rootwait fixrtc
mmcrootflags=subvol=@

console=ttyO0,115200n8

kernel_file=$vmlinuz
initrd_file=$initRd

loadaddr=0x11000000
initrd_addr=0x13000000
fdtaddr=0x1000000

initrd_high=0xffffffff
fdt_high=0xffffffff

loadkernel=load mmc \${mmcdev}:\${mmcpart} \${loadaddr} \${kernel_file}
loadinitrd=load mmc \${mmcdev}:\${mmcpart} \${initrd_addr} \${initrd_file}; setenv initrd_size \${filesize}
loadfdt=load mmc \${mmcdev}:\${mmcpart} \${fdtaddr} /dtbs/\${fdtfile}

m="1080p60hz"
m_bpp="32"

loadfiles=run loadkernel; run loadinitrd; run loadfdt
mmcargs=setenv bootargs rootwait rw console=tty0 console=\${console} root=\${mmcroot} rootfstype=\${mmcrootfstype} rootflags=\${mmcrootflags} no_console_suspend hdmimode=${m} m_bpp=${m_bpp} fsck.fix=yes

uenvcmd=run loadfiles; run mmcargs; booti \${loadaddr} \${initrd_addr}:\${initrd_size} \${fdtaddr}
EOF

	mkdir -p /boot/dtbs
	cp /usr/lib/linux-image-*-armmp/* /boot/dtbs
}

a20_setup_boot() {
	dtb="$1"

	# Setup boot.cmd
	if grep -q btrfs /etc/fstab ; then
		fstype=btrfs
	else
		fstype=ext4
	fi
	kernelVersion=$(ls /usr/lib/*/$dtb | head -1 | cut -d/ -f4)
	version=$(echo $kernelVersion | sed 's/linux-image-\(.*\)/\1/')
	initRd=initrd.img-$version
	vmlinuz=vmlinuz-$version

	# Create boot.cmd
	cat >> /boot/boot.cmd <<EOF
setenv mmcdev 0
setenv mmcpart 1

setenv mmcroot /dev/mmcblk0p2 ro
setenv mmcrootfstype $fstype rootwait fixrtc
setenv mmcrootflags subvol=@

setenv console ttyS0,115200n8

setenv kernel_file $vmlinuz
setenv initrd_file $initRd
setenv fdtfile $dtb

setenv loadaddr 0x46000000
setenv initrd_addr 0x48000000
setenv fdtaddr 0x47000000

setenv initrd_high 0xffffffff
setenv fdt_high 0xffffffff

setenv loadkernel load mmc \${mmcdev}:\${mmcpart} \${loadaddr} \${kernel_file}
setenv loadinitrd load mmc \${mmcdev}:\${mmcpart} \${initrd_addr} \${initrd_file}\\; setenv initrd_size \\\${filesize}
setenv loadfdt load mmc \${mmcdev}:\${mmcpart} \${fdtaddr} /dtbs/\${fdtfile}

setenv loadfiles run loadkernel\\; run loadinitrd\\; run loadfdt
setenv mmcargs setenv bootargs console=\${console} root=\${mmcroot} rootfstype=\${mmcrootfstype} rootflags=\${mmcrootflags}

run loadfiles; run mmcargs; bootz \${loadaddr} \${initrd_addr}:\${initrd_size} \${fdtaddr}
EOF

	# boot.scr for Allwinner A20 based device
	mkimage -C none -A arm -T script -d /boot/boot.cmd /boot/boot.scr

	# Copy all DTBs
	mkdir -p /boot/dtbs
	cp /usr/lib/$kernelVersion/* /boot/dtbs

	# extra boot modules
	echo "rtc_sunxi" >> /etc/initramfs-tools/modules
}

case "$MACHINE" in
	beaglebone)
		beaglebone_setup_boot
		beaglebone_flash
		beaglebone_repack_kernel
		enable_serial_console ttyO0
		;;
	odroid-c2)
		odroidc2_setup_boot meson64_odroidc2
		enable_serial_console ttyO0
		;;
	cubietruck)
		a20_setup_boot sun7i-a20-cubietruck.dtb
		enable_serial_console ttyS0
		;;
	a20-olinuxino-lime)
		a20_setup_boot sun7i-a20-olinuxino-lime.dtb
		enable_serial_console ttyS0
		;;
	a20-olinuxino-lime2)
		a20_setup_boot sun7i-a20-olinuxino-lime2.dtb
		enable_serial_console ttyS0
		;;
	a20-olinuxino-micro)
		a20_setup_boot sun7i-a20-olinuxino-micro.dtb
		enable_serial_console ttyS0
		;;
	cubieboard2)
		a20_setup_boot sun7i-a20-cubieboard2.dtb
		enable_serial_console ttyS0
		;;
esac