From e02268012bb2e2da9642313dd2be0f4765c4c19d Mon Sep 17 00:00:00 2001
From: Bob Mottram <bob@freedombone.net>
Date: Wed, 31 May 2017 10:05:49 +0100
Subject: [PATCH] Repacking the beaglebone kernel
---
src/freedombone-image-hardware-setup | 225 +++++++++++++++------------
1 file changed, 124 insertions(+), 101 deletions(-)
diff --git a/src/freedombone-image-hardware-setup b/src/freedombone-image-hardware-setup
index 6fb841ee8..f3d24fe80 100755
--- a/src/freedombone-image-hardware-setup
+++ b/src/freedombone-image-hardware-setup
@@ -38,35 +38,125 @@ enable_serial_console() {
echo "T0:12345:respawn:/sbin/getty -L $device 115200 vt100" >> /etc/inittab
}
-setup_flash_kernel() {
- if [ ! -d /etc/flash-kernel ] ; then
- mkdir /etc/flash-kernel
- fi
- echo -n "$1" > /etc/flash-kernel/machine
+beaglebone_setup_boot() {
+ bbb_version=$1
- command_line=""
- if [ -n "$2" ] ; then
- command_line="console=$2"
+ # Setup uEnv.txt
+ if grep -q btrfs /etc/fstab ; then
+ fstype=btrfs
+ else
+ fstype=ext4
fi
+ if [ ! $bbb_version ]; then
+ kernelVersion=$(ls /usr/lib/*/am335x-boneblack.dtb | head -1 | cut -d/ -f4)
+ else
+ kernelVersion=$(ls /usr/lib/*/am335x-boneblack-${1}.dtb | head -1 | cut -d/ -f4)
+ fi
+ version=$(echo $kernelVersion | sed 's/linux-image-\(.*\)/\1/')
+ initRd=initrd.img-$version
+ vmlinuz=vmlinuz-$version
+
+ bbb_loadaddr='0x82000000'
+ bbb_initrd_addr='0x88080000'
+ bbb_fdtaddr='0x88000000'
- if [ -n "$command_line" ] ; then
- echo flash-kernel flash-kernel/linux_cmdline string "$command_line" | debconf-set-selections
+ # 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=$initRd
+
+loadaddr=$bbb_loadaddr
+initrd_addr=$bbb_initrd_addr
+fdtaddr=$bbb_fdtaddr
+
+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() {
+ bbb_version=$1
+ # 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"
+
+ bbb_dtb='am335x-boneblack'
+ if [ $bbb_version ]; then
+ bbb_dtb="am335x-boneblack-${bbb_version}"
fi
- apt-get -yq install flash-kernel
+ kernelVersion=$(ls /usr/lib/*/${bbb_dtb}.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/$kernelVersion/${bbb_dtb}.dtb dtb ; \
+ cat $vmlinuz dtb >> temp-kernel ; \
+ mkimage -A arm -O linux -T kernel -n "Debian kernel ${version}" \
+ -C none -a 0x82000000 -e 0x82000000 -d temp-kernel uImage ; \
+ rm -f temp-kernel ; \
+ mkimage -A arm -O linux -T ramdisk -C gzip -a 0x88080000 -e 0x88080000 \
+ -n "Debian ramdisk ${version}" \
+ -d $initRd uInitrd )
}
-a20_env() {
+a20_setup_boot() {
dtb="$1"
# Setup boot.cmd
- fstype=ext4
- if grep -q btrfs /etc/fstab; then
+ if grep -q btrfs /etc/fstab ; then
fstype=btrfs
- fi
-
- if [ -n "$command_line" ] ; then
- echo flash-kernel flash-kernel/linux_cmdline string "$command_line" | debconf-set-selections
+ else
+ fstype=ext4
fi
kernelVersion=$(ls /usr/lib/*/$dtb | head -1 | cut -d/ -f4)
version=$(echo $kernelVersion | sed 's/linux-image-\(.*\)/\1/')
@@ -116,104 +206,37 @@ EOF
echo "rtc_sunxi" >> /etc/initramfs-tools/modules
}
-beaglebone_env() {
- bbb_version=$1
-
- # Setup uEnv.txt
- fstype=ext4
- if grep -q btrfs /etc/fstab ; then
- fstype=btrfs
- fi
- if [ ! $bbb_version ]; then
- kernelVersion=$(ls /usr/lib/*/am335x-boneblack.dtb | head -1 | cut -d/ -f4)
- else
- kernelVersion=$(ls /usr/lib/*/am335x-boneblack-${1}.dtb | head -1 | cut -d/ -f4)
- fi
- version=$(echo $kernelVersion | sed 's/linux-image-\(.*\)/\1/')
- initRd=initrd.img-$version
- vmlinuz=vmlinuz-$version
-
- #bbb_loadaddr='0x80200000'
- #bbb_initrd_addr='0x81000000'
- #bbb_fdtaddr='0x80F80000'
- #if [[ "$bbb_version" == "wireless" ]]; then
- bbb_loadaddr='0x82000000'
- bbb_initrd_addr='0x88080000'
- bbb_fdtaddr='0x88000000'
- #fi
-
- # uEnv.txt for Beaglebone
- # based on https://github.com/beagleboard/image-builder/blob/master/target/boot/beagleboard.org.txt
- cat >> /boot/uEnv.txt <<EOF
-mmcroot=/dev/mmcblk0p2 ro
-mmcrootfstype=$fstype rootwait fixrtc
-mmcrootflags=subvol=@
-
-console=ttyO0,115200n8
-
-kernel_file=$vmlinuz
-initrd_file=$initRd
-
-loadaddr=$bbb_loadaddr
-initrd_addr=$bbb_initrd_addr
-fdtaddr=$bbb_fdtaddr
-
-initrd_high=0xffffffff
-fdt_high=0xffffffff
-
-loadkernel=load mmc \${mmcdev}:\${mmcpart} \${loadaddr} \${kernel_file}
-loadinitrd=load mmc \${mmcdev}:\${mmcpart} \${initrd_addr} \${initrd_file}; setenv intrd_size \${filesize}
-loadfdt=load mmc \${mmcdev}:\${mmcpart} \${fdtaddr} /dtbs/\${fdtfile}
-
-loadfiles=run loadkernel; run loadinitrd; run loadfdt
-mmcargs=setenv bootargs console=tty0 console=\${console} root=\${mmcroot} rootfstype=\${mmcrootfstype} rootflags=\${mmcrootflags}
-
-uenvcmd=run loadfiles; run mmcargs; bootz \${loadaddr} \${initrd_addr}:\${initrd_size} \${fdtaddr}
-EOF
-
- mkdir -p /boot/dtbs
- cp /usr/lib/linux-image-*-armmp/* /boot/dtbs
-}
-
case "$MACHINE" in
beaglebone)
- beaglebone_env
+ beaglebone_setup_boot
+ beaglebone_flash
+ beaglebone_repack_kernel
enable_serial_console ttyO0
- setup_flash_kernel 'TI AM335x BeagleBone Black' 'ttyO0'
;;
beaglebonewifi)
- beaglebone_env
+ beaglebone_setup_boot wireless
+ beaglebone_flash
+ beaglebone_repack_kernel wireless
enable_serial_console ttyO0
- setup_flash_kernel 'TI AM335x BeagleBone Black Wireless' 'ttyO0'
;;
cubietruck)
- a20_env sun7i-a20-cubietruck.dtb
- enable_serial_console ttyO0
- setup_flash_kernel 'Cubietech Cubietruck'
+ a20_setup_boot sun7i-a20-cubietruck.dtb
+ enable_serial_console ttyS0
;;
a20-olinuxino-lime)
- a20_env sun7i-a20-olinuxino-lime.dtb
- enable_serial_console ttyO0
- setup_flash_kernel 'Olimex A20-OLinuXino-LIME'
+ a20_setup_boot sun7i-a20-olinuxino-lime.dtb
+ enable_serial_console ttyS0
;;
a20-olinuxino-lime2)
- a20_env sun7i-a20-olinuxino-lime2.dtb
- enable_serial_console ttyO0
- setup_flash_kernel 'Olimex A20-OLinuXino-LIME2'
+ a20_setup_boot sun7i-a20-olinuxino-lime2.dtb
+ enable_serial_console ttyS0
;;
a20-olinuxino-micro)
- a20_env sun7i-a20-olinuxino-micro.dtb
- enable_serial_console ttyO0
- setup_flash_kernel 'Olimex A20-Olinuxino Micro'
+ a20_setup_boot sun7i-a20-olinuxino-micro.dtb
+ enable_serial_console ttyS0
;;
cubieboard2)
- a20_env sun7i-a20-cubieboard2.dtb
- enable_serial_console ttyO0
- setup_flash_kernel 'Cubietech Cubieboard2'
- ;;
- pcduino3)
- a20_env sun7i-a20-pcduino3.dtb
- enable_serial_console ttyO0
- setup_flash_kernel 'LinkSprite pcDuino3'
+ a20_setup_boot sun7i-a20-cubieboard2.dtb
+ enable_serial_console ttyS0
;;
esac
--
GitLab