Debian keyring.
The prebuilt images are made for 1GB cards, so they should fit onto
-pretty much any modern SD card.
+pretty much any modern SD or MMC card. Root images built for SD cards
+will fit work on MMC devices but not the other way round (the prebuilt
+root images are for SD).
+
+If you want to update the boot partition of an eMMC device (where
+U-Boot lives), you will need to unlock it before Linux lets you
+write to it, e.g.:
+
+ echo 0 > /sys/block/mmcblk0boot0/force_ro
+
+SD cards do not have hardware partitions (U-Boot is stored on the same
+block device as everything else), so all you need to do is to decompress
+the image and dd it to the card.
+
Prebuilt images: https://storage.sesse.net/debian-xu4/
ODROID forum thread: http://forum.odroid.com/viewtopic.php?f=96&t=21256
#! /bin/bash
# Install a bog-standard Debian bootable for ODROID XU3/XU4.
-# Note that this will only work for SD cards; MMC devices
-# have a different layout. See
-# /usr/share/doc/u-boot-exynos/README.odroid.gz for more details.
#
# Note: You will need u-boot-exynos >= 2016.05~rc3+dfsg1-1,
# which at the time of writing is in experimental (it will
# probably eventually hit stretch).
#
-# Beware: This will ERASE ALL DATA on the target SD card.
+# Beware: This will ERASE ALL DATA on the target SD card
+# or MMC partition.
#
#
# Copyright 2016 Steinar H. Gunderson <steinar+odroid@gunderson.no>.
DEVICE=
BOOTPART_MB=256
SUITE=stretch
+TYPE=sd
-while getopts "b:s:" opt; do
+while getopts "b:s:t:" opt; do
case $opt in
b)
BOOTPART_MB=$OPTARG
# Sorry, jessie won't work; the kernel doesn't support XU3/XU4.
SUITE=$OPTARG
;;
+ t)
+ TYPE=$OPTARG
+ ;;
:)
echo "Option -$OPTARG requires an argument."
exit 1
DEVICE=$1
if [ ! -b "$DEVICE" ]; then
- echo "Usage: $0 [-b BOOTPARTITION_SIZE] [-s SUITE] DEVICE [OTHER_DEBOOTSTRAP_ARGS...]"
+ echo "Usage: $0 [-b BOOTPARTITION_SIZE] [-s SUITE] [-t sd|mmc] DEVICE [OTHER_DEBOOTSTRAP_ARGS...]"
echo "DEVICE is an SD card device, e.g. /dev/sdb."
exit 1
fi
shift
+if [ "$TYPE" != "sd" ] && [ "$TYPE" != "mmc" ]; then
+ echo "Card type must be 'sd' or 'mmc'."
+ exit 1
+fi
+
set -x
# Prerequisites.
fi
# Put the different stages of U-Boot into the right place.
-# The offsets come from README.odroid.gz.
-dd if=u-boot/sd_fuse/hardkernel_1mb_uboot/bl1.bin.hardkernel of=${DEVICE} seek=1 conv=sync
-dd if=u-boot/sd_fuse/hardkernel_1mb_uboot/bl2.bin.hardkernel.1mb_uboot of=${DEVICE} seek=31 conv=sync
-dd if=/usr/lib/u-boot/odroid-xu3/u-boot-dtb.bin of=${DEVICE} seek=63 conv=sync
-dd if=u-boot/sd_fuse/hardkernel_1mb_uboot/tzsw.bin.hardkernel of=${DEVICE} seek=2111 conv=sync
+# The offsets come from /usr/share/doc/u-boot-exynos/README.odroid.gz.
+if [ "$TYPE" = "sd" ]; then
+ UBOOT_DEVICE=${DEVICE}
+ UBOOT_OFFSET=1
+else
+ UBOOT_DEVICE=${DEVICE}boot0
+ UBOOT_OFFSET=0
+fi
+dd if=u-boot/sd_fuse/hardkernel_1mb_uboot/bl1.bin.hardkernel of=${UBOOT_DEVICE} seek=${UBOOT_OFFSET} conv=sync
+dd if=u-boot/sd_fuse/hardkernel_1mb_uboot/bl2.bin.hardkernel.1mb_uboot of=${UBOOT_DEVICE} seek=$((UBOOT_OFFSET + 30)) conv=sync
+dd if=/usr/lib/u-boot/odroid-xu3/u-boot-dtb.bin of=${UBOOT_DEVICE} seek=$((UBOOT_OFFSET + 62)) conv=sync
+dd if=u-boot/sd_fuse/hardkernel_1mb_uboot/tzsw.bin.hardkernel of=${UBOOT_DEVICE} seek=$((UBOOT_OFFSET + 2110)) conv=sync
# Clear out the environment.
dd if=/dev/zero of=${DEVICE} seek=2560 count=32 bs=512 conv=sync