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-rw-r--r--libre/uboot4extlinux-sunxi/install-uboot4extlinux.sh.in88
1 files changed, 88 insertions, 0 deletions
diff --git a/libre/uboot4extlinux-sunxi/install-uboot4extlinux.sh.in b/libre/uboot4extlinux-sunxi/install-uboot4extlinux.sh.in
new file mode 100644
index 000000000..1c744f313
--- /dev/null
+++ b/libre/uboot4extlinux-sunxi/install-uboot4extlinux.sh.in
@@ -0,0 +1,88 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0+
+# Copyright (C) 2020 Denis 'GNUtoo' Carikli
+
+progname="install-uboot4extlinux.sh"
+u_boot_with_spl="@u_boot_with_spl@"
+u_boot_with_spl_offset=@u_boot_with_spl_offset@
+
+usage()
+{
+ echo "Usage: ${progname} [INSTALL_DEVICE]"
+}
+
+install_image()
+{
+ install_device="$1"
+ offset="$2"
+ image="$3"
+
+ # We need root permissions for now:
+ # - blkid is used to bypass caching and it needs root access
+ if [ "$(id -u)" != 0 ] ; then
+ echo "Error: This script needs to be run as root"
+ exit 1
+ fi
+
+ # We only support MBR for now
+ # It will also catch errors like /dev/sdb1 and mmcbk0p1 as they
+ # don't have the PTTYPE tag
+ PTTYPE="$(blkid --probe --match-tag PTTYPE ${install_device} | \
+ awk '{print $2}' | sed 's#^PTTYPE="##' | sed 's#"$##')"
+ if [ -z "${PTTYPE}" ] ; then
+ echo "Error: Could not find an (MBR) formating inside " \
+ "${install_device}"
+ echo " Possible causes:"
+ echo " - Maybe {instal_device} is a partition"
+ echo " - or Maybe it's completelyor unformated"
+ exit 1
+ elif [ "${PTTYPE}" != "dos" ] ; then
+ echo "Error: ${install_device} is not in MBR format"
+ echo " Currently, only the MBR format is supported"
+ exit 1
+ fi
+
+ # Check if offset > MBR partition table part end
+ if [ ${offset} -lt 512 ] ; then
+ echo "Error: The offset (${offset}) is < 512"
+ echo " offsets < 512 aren't supported (yet)"
+ exit 1
+ fi
+
+ # Get the image size
+ image_size="$(du --bytes --apparent-size ${image} | awk '{print $1}')"
+
+ # With MBR, most partitioning tools leave makes the first partition
+ # start at 1MiB. So we need to check if the bootloader doesn't end
+ # up overwriting the first partition.
+ if [ $(expr ${image_size} + ${offset}) -gt $(expr 1024 \* 1024) ] ; then
+ echo "Error: ${image} is too big:"
+ echo " offset: ${offset}"
+ echo " size: ${image_size}"
+ echo " By default, "\
+ "partitioing tools makes the first partition start at 1MiB"
+ echo " Instaling ${images} "\
+ "would overwrite that first partition (if it's present)."
+ echo " Please contact the Parabola developers " \
+ "so they could fix that issue"
+ exit 1
+ fi
+
+ # Copies with with a block size of 1 can be quite slow in practice
+ if [ "$(expr ${offset} % 512)" = 0 ] ; then
+ dd conv=notrunc "if=${image}" "of=${install_device}" \
+ bs=512 "seek=$(expr ${offset} / 512)"
+ else
+ echo "Warning: slow copy"
+ dd conv=notrunc "if=${image}" "of=${install_device}" \
+ bs=1 "seek=${offset}"
+ fi
+
+ sync "${install_device}"
+}
+
+if [ $# -ne 1 ] ; then
+ usage
+else
+ install_image "$1" "${u_boot_with_spl_offset}" "${u_boot_with_spl}"
+fi