Updated install to emmc script

rock64_install_to_emmc.sh

@@ -0,0 +1,116 @@
+#!/bin/bash
+
+set -eo pipefail
+
+if [[ "$(id -u)" -ne "0" ]]; then
+	echo "This script requires root."
+	exit 1
+fi
+
+echo "Rock64 Release Installer!"
+echo "(C) 2017. Kamil Trzciński (https://ayufan.eu)."
+echo ""
+
+usage() {
+    echo "Usage:"
+    echo "$ $0 <system> [version]"
+    echo ""
+    echo "Systems:"
+    echo " - jessie-minimal (https://github.com/ayufan-rock64/linux-build/releases)"
+    echo " - jessie-openmediavault (https://github.com/ayufan-rock64/linux-build/releases)"
+    echo " - stretch-minimal (https://github.com/ayufan-rock64/linux-build/releases)"
+    echo " - xenial-i3 (https://github.com/ayufan-rock64/linux-build/releases)"
+    echo " - xenial-mate (https://github.com/ayufan-rock64/linux-build/releases)"
+    echo " - xenial-minimal (https://github.com/ayufan-rock64/linux-build/releases)"
+    echo ""
+    echo "Version:"
+    echo " - latest will be used if version is not defined"
+    exit 1
+}
+
+if [[ $# -ne 1 ]] && [[ $# -ne 2 ]]; then
+    usage
+fi
+
+case $(findmnt / -n -o SOURCE) in
+        /dev/mmcblk0p7)
+                DISK=/dev/mmcblk0
+                NAME=emmc
+                ;;
+
+        /dev/mmcblk1p7)
+                DISK=/dev/mmcblk1
+                NAME=sd
+                ;;
+
+       *)
+                echo "Unknown disk for /"
+                exit 1
+                ;;
+esac
+
+case "$1" in
+    jessie-minimal|jessie-openmediavault|stretch-minimal|xenial-i3|xenial-mate|xenial-minimal)
+        REPO="ayufan-rock64/linux-build"
+        PREFIX="$1-rock64-"
+        SUFFIX="-[0-9]*-arm64.img.xz"
+        ARCHIVER="xz -d"
+        ;;
+
+    *)
+        echo "Unknown system: $1"
+        echo ""
+        usage
+        ;;
+esac
+
+VERSION="$2"
+
+if [[ -z "$VERSION" ]]; then
+	VERSION=$(curl -f -sS https://api.github.com/repos/$REPO/releases/latest | jq -r ".tag_name")
+	if [ -z "$VERSION" ]; then
+		echo "Latest release was not for $1."
+        echo "Please go to: https://github.com/$REPO/releases/latest"
+        exit 1
+	fi
+
+	echo "Using latest release: $VERSION from https://github.com/$REPO/releases."
+fi
+
+NAME="$PREFIX$VERSION$SUFFIX"
+NAME_SAFE="${NAME//./\\.}"
+VERSION_SAFE="${VERSION//./\\.}"
+
+echo "Looking for download URL..."
+DOWNLOAD_URL=$(curl -f -sS https://api.github.com/repos/$REPO/releases | \
+    jq -r ".[].assets | .[].browser_download_url" | \
+    ( grep -o "https://github\.com/$REPO/releases/download/$VERSION_SAFE/$NAME_SAFE" || true))
+
+if [[ -z "$DOWNLOAD_URL" ]]; then
+    echo "The download URL for $NAME not found".
+    echo "Look at https://github.com/$REPO/releases for correct versions."
+    exit 1
+fi
+
+echo "Doing this will overwrite all data stored on eMMC."
+
+while true; do
+    echo "Type YES to continue or Ctrl-C to abort."
+    read CONFIRM
+    if [[ "$CONFIRM" == "YES" ]]; then
+        break
+    fi
+done
+
+echo ""
+echo "Using $DOWNLOAD_URL..."
+echo "Umounting..."
+umount -f /dev/mmcblk0* || true
+echo ""
+
+echo "Downloading and writing to /dev/mmcblk0..."
+curl -L -f "$DOWNLOAD_URL" | $ARCHIVER | dd bs=30M of=/dev/mmcblk0
+sync
+echo ""
+
+echo "Done."