mvebu: add sdcard image creation script

Added gen_mvebu_sdcard_img.sh to facilitate creating an fixed-size sdcard image,
adding the bootloader and populating it with actual data.

Added the required rules for creating a 4GB sdcard image according to this layout:
p0: boot (fat32)
p1: rootfs (squashfs)
p2: rootfs_data (ext4)
This should be generic to any mvebu boards that can boot from block storage.

Added the new sdcard image to the Clearfog image profile.

Signed-off-by: Josua Mayer <josua.mayer97@gmail.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name> [cleanup]
This commit is contained in:
Josua Mayer 2016-08-09 15:23:24 +02:00 committed by Felix Fietkau
parent a67183a7bc
commit 3242c07649
4 changed files with 154 additions and 3 deletions

View File

@ -259,7 +259,7 @@ menu "Target Images"
config TARGET_ROOTFS_PARTSIZE
int "Root filesystem partition size (in MB)"
depends on GRUB_IMAGES || TARGET_ROOTFS_EXT4FS || TARGET_rb532
depends on GRUB_IMAGES || TARGET_ROOTFS_EXT4FS || TARGET_rb532 || TARGET_mvebu
default 48
help
Select the root filesystem partition size.

View File

@ -29,6 +29,38 @@ define Build/clearfog-bundle
gzip -9n -c $@.new > $@
endef
# SD-Card Images:
# these values are optimized for a 4GB labeled sdcard that actually holds 7744512 sectors of 512 byte
# MBR: 2048 sectors
# Partition 1: 32768 sectors
# Partition 2: 98304 sectors (configurable)
# Partition 3: 7611392 sectors (configurable, depends on p2 size)
define Build/boot-scr
rm -f $@.bootscript
mkimage -A arm -O linux -T script -C none -a 0 -e 0 -d boot.script $@.bootscript
endef
define Build/boot-img
rm -f $@.boot
mkfs.fat -C $@.boot 16384
$(foreach dts,$(DEVICE_DTS), mcopy -i $@.boot $(DTS_DIR)/$(dts).dtb ::$(dts).dtb)
mcopy -i $@.boot $(IMAGE_KERNEL) ::zImage
mcopy -i $@.boot $@.bootscript ::boot.scr
endef
define Build/sdcard-img
rm -rf $@ $@.rootfsdata $@.tmp
mkdir -p $@.tmp
ROOTFS_SIZE=$$(( $(CONFIG_TARGET_ROOTFS_PARTSIZE) * 1024 * 2 )); \
DATA_SIZE=$$(( 7709696 - ($(CONFIG_TARGET_ROOTFS_PARTSIZE) * 1024 * 2) )); \
make_ext4fs -J -l $$DATA_SIZE $@.rootfsdata $@.tmp && \
./gen_mvebu_sdcard_img.sh 7744512 $@ \
"$(BIN_DIR)/uboot-mvebu-clearfog/openwrt-mvebu-clearfog-u-boot-spl.kwb" \
c 32768 $@.boot \
83 $$ROOTFS_SIZE $(IMAGE_ROOTFS) \
83 $$DATA_SIZE $@.rootfsdata
endef
define Device/Default
PROFILES := Default
@ -150,9 +182,10 @@ define Device/armada-388-clearfog
KERNEL_INSTALL := 1
KERNEL := dtb | kernel-bin
DEVICE_TITLE := SolidRun ClearFog
DEVICE_PACKAGES := uboot-mvebu-clearfog
IMAGES := bundle.tar.gz
DEVICE_PACKAGES := uboot-mvebu-clearfog kmod-fs-ext4
IMAGES := bundle.tar.gz sdcard.img.gz
IMAGE/bundle.tar.gz := clearfog-bundle
IMAGE/sdcard.img.gz := boot-scr | boot-img | sdcard-img | gzip
IMAGE_NAME = $$(IMAGE_PREFIX)-$$(2)
endef
TARGET_DEVICES += armada-388-clearfog

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@ -0,0 +1,7 @@
setenv bootargs console=ttyS0,115200n8 root=/dev/mmcblk0p2 rootfstype=squashfs rootwait overlay=/dev/mmcblk0p3
setenv fdt_high 0x07a12000
fatload mmc 0:1 0x02000000 zImage
fatload mmc 0:1 0x05F00000 armada-388-clearfog.dtb
bootz 0x02000000 - 0x05F00000

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@ -0,0 +1,111 @@
#!/usr/bin/env bash
#
# Copyright (C) 2016 Josua Mayer
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
usage() {
echo "$0 <sectors> <outfile> <bootloader> [<type_partitionN> <sectors_partitionN> <img_partitionN>]?"
}
# always require first 3 arguments
# then in pairs up to 8 more for a total of up to 4 partitions
if [ $# -lt 3 ] || [ $# -gt 15 ] || [ $(($#%3)) -ne 0 ]; then
usage
exit 1
fi
set -e
# parameters
IMGSIZE=$1
OUTFILE="$2"
BOOTLOADER="$3"
# calculate number of partitions from argument list
NUMPARTS=$#
((NUMPARTS=(NUMPARTS-3)/3))
# find required applications
FDISK=$(env PATH="/usr/local/sbin:/usr/sbin:/sbin:$PATH" which fdisk)
# generate image file
printf "Creating $OUTFILE from /dev/zero: "
dd if=/dev/zero of="$OUTFILE" bs=512 count=1 >/dev/null
printf "Done\n"
# generate fdisk argument list
printf "Generating fdisk argument list: "
ARGSFILE=$(mktemp)
# empty partition table
printf "o\n" >> $ARGSFILE
# actual partitions
offset=2048
for i in $(seq 1 1 $NUMPARTS); do
((n=3+3*i-2)); type=$(eval echo \${$n})
((n=3+3*i-1)); size=$(eval echo \${$n})
((end=offset+size-1))
printf "n\np\n%i\n\n%i\n" $i $end >> $ARGSFILE
# special case on first aprtition: fdisk wont ask which one
if [ $i -eq 1 ]; then
printf "t\n%s\n" $type >> $ARGSFILE
else
printf "t\n%i\n%s\n" $i $type >> $ARGSFILE
fi
# add this partitions size to offset for next partition
((offset=end+1))
done
# write and exit
printf "w\n" >> $ARGSFILE
printf "Done\n"
# create real partition table using fdisk
printf "Creating partition table: "
cat $ARGSFILE | $FDISK "$OUTFILE" >/dev/null
printf "Done\n"
# remove temporary files
printf "Cleaning up: "
rm -f $ARGSFILE
printf "Done\n"
# install bootloader
printf "Writing bootloader: "
dd of="$OUTFILE" if="$BOOTLOADER" bs=512 seek=1 conv=notrunc 2>/dev/null
printf "Done\n"
# write partition data
# offset of first partition is 2048
offset=2048
for i in $(seq 1 1 $NUMPARTS); do
((n=3+3*i-1)); size=$(eval echo \${$n})
((n=3+3*i)); img="$(eval echo \${$n})"
printf "Writing %s to partition %i: " "$img" $i
dd if="$img" of="$OUTFILE" bs=512 seek=$offset conv=notrunc 2>/dev/null
printf "Done\n"
# add this partitions size to offset for next partition
((offset=offset+size))
done