Initial commit

target/linux/mvebu/image/gen_mvebu_sdcard_img.sh

@@ -0,0 +1,70 @@
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# Copyright (C) 2016 Josua Mayer
+
+usage() {
+	echo "$0 <outfile> [<bootloader> <type_partitionN> <size_partitionN> <img_partitionN>]?"
+}
+
+# always require first 2 or 3 arguments
+# then in pairs up to 8 more for a total of up to 4 partitions
+if [ $# -lt 1 ] || [ $# -gt 14 ] || [ $((($# - 1) % 3)) -ne 0 ]; then
+	if [ $# -lt 2 ] || [ $# -gt 15 ] || [ $((($# - 2) % 3)) -ne 0 ]; then
+		usage
+		exit 1
+	else
+		BOOTLOADER="$2"
+	fi
+fi
+
+set -e
+
+# parameters
+OUTFILE="$1"; shift
+if [ -n "$BOOTLOADER" ]; then
+	shift
+fi
+
+# generate image file
+printf "Creating %s from /dev/zero: " "$OUTFILE"
+dd if=/dev/zero of="$OUTFILE" bs=512 count=1 >/dev/null
+printf "Done\n"
+
+while [ "$#" -ge 3 ]; do
+	ptgen_args="$ptgen_args -t $1 -p $(($2 * 1024 + 256))"
+	parts="$parts$3 "
+	shift; shift; shift
+done
+
+head=16
+sect=63
+
+# create real partition table using fdisk
+printf "Creating partition table: "
+set $(ptgen -o "$OUTFILE" -h $head -s $sect -l 1024 -S 0x$SIGNATURE $ptgen_args)
+printf "Done\n"
+
+# install bootloader
+if [ -n "$BOOTLOADER" ]; then
+	printf "Writing bootloader: "
+	dd of="$OUTFILE" if="$BOOTLOADER" bs=512 seek=1 conv=notrunc 2>/dev/null
+	printf "Done\n"
+fi
+
+i=1
+while [ "$#" -ge 2 ]; do
+	img="${parts%% *}"
+	parts="${parts#* }"
+
+	printf "Writing %s to partition %i: " "$img" $i
+	(
+		cat "$img"
+		# add padding to avoid leaving behind old overlay fs data
+		dd if=/dev/zero bs=128k count=1 2>/dev/null
+	) | dd of="$OUTFILE" bs=512 seek=$(($1 / 512)) conv=notrunc 2>/dev/null
+	printf "Done\n"
+
+	i=$((i+1))
+	shift; shift
+done