distro_boot: Add helper script to install/boot distros on SGx models

Change-Id: Ia8ea050117aeb1d003e492cc994171af1807bb0e
Signed-off-by: Nariman Poushin <nariman.poushin@linaro.org>

1 files changed, 139 insertions, 0 deletions

diff --git a/sgi575/distro_boot.sh b/sgi575/distro_boot.sh
new file mode 100755
index 0000000..bde8cea
--- /dev/null
+++ b/sgi575/distro_boot.sh
@@ -0,0 +1,139 @@
+#!/bin/bash
+
+installer_image=""
+disk_size=""
+mode=""
+
+install ()
+{
+	disk_name=$RANDOM.satadisk
+
+	# Create a disk of $disk_size GB
+	dd if=/dev/zero of=$disk_name bs=1G count=$disk_size
+
+	echo "Created $disk_name of size $disk_size GB, proceeding to install $installer_image ..."
+
+	./run_model.sh -v $installer_image -d $disk_name
+}
+
+# This script allows a user to create a virtual satadisk and install either
+# Fedora 27 or Debian 9.3 on to it or boot an existing install.
+
+boot ()
+{
+	# If $disk_image is not specified, see if there are more than one
+	# .satadisk files, if so, prompt the user to pick one with -d.
+	# If there is exactly one available, boot it. If there are none, prompt
+	# the user to install with -i/-s
+
+	available_images=$(find . -name "*.satadisk")
+
+	num_available_images=$(echo $available_images | wc -w)
+
+	case $num_available_images in
+		0)
+			echo "No available images found to boot from, please install one, see distr_boot -h for help"
+			exit 1
+			;;
+		1)
+			# In the case of exactly one, the list of images will
+			# be the image name so just use it
+			echo "Found $available_images, proceeding to boot ..."
+			./run_model.sh -d $available_images
+			;;
+		*)
+			if [[ -z "$disk_image" ]]; then
+				echo "Found several available images:"
+				echo ""
+				echo $available_images | sed 's/\.\///g' | tr ' ' '\n'
+				echo ""
+				echo "Please choose one using distro_boot -d [disk_image]"
+				echo ""
+			else
+				echo "Proceeding to boot supplied disk image name: $disk_image ..."
+				./run_model.sh -d $disk_image
+			fi
+			;;
+	esac
+}
+
+print_usage ()
+{
+	echo "distro_boot:"
+	echo ""
+	echo " Install or boot Linux distos on System Guidance Models."
+	echo ""
+	echo "distro_boot -i [image] -s [disk size] -d [ disk image]"
+	echo "	-i - Image, takes a path to an iso installer image"
+	echo "	-s - Disk size in GB."
+	echo "	-d - Disk image with previously installed distro, used for"
+	echo "	     disambiguation if there are more than one installed"
+	echo "	     concurrently"
+	echo ""
+	echo " distro_boot must be called either with both -i and -s options or"
+	echo " with neither, please see examples below"
+	echo ""
+	echo "Examples:"
+	echo ""
+	echo "	Install Fedora 27 on to a 16 GB disk"
+	echo ""
+	echo "		distro_boot -i Fedora-Server-dvd-aarch64-27-1.6.iso -s 16"
+	echo ""
+	echo "	Boot existing single install"
+	echo ""
+	echo "		distro_boot"
+	echo ""
+	echo "	Boot existing install from a set of intalled disks"
+	echo ""
+	echo "		distro_boot -d bluepeter.satadisk"
+	echo ""
+}
+
+while getopts "i:s:d:h" opt; do
+	case $opt in
+		i)
+			installer_image=$OPTARG
+			;;
+		s)
+			disk_size=$OPTARG
+			;;
+		d)
+			disk_image=$OPTARG
+			;;
+		*)
+			print_usage
+			exit 1
+			;;
+	esac
+done
+
+
+# Either an installer and a disk size is specified or neither.
+# If they are specified, create a new disk and boot the model with those params
+# if not, check for an existing .satadisk file and use that to boot from
+# otherwise throw an error
+
+if [[ ! -z $disk_size ]] && [[ ! -z $installer_image ]]; then
+	mode="install"
+elif [[ -z $disk_size ]] && [[ -z $installer_image ]]; then
+
+	# There is no need to separate the boot from single / multiple images
+	# at this stage, we can handle that in boot()
+	mode="boot"
+else
+	print_usage
+	exit 1
+fi
+
+case $mode in
+	install)
+		install
+		;;
+	boot)
+		boot
+		;;
+	*)
+		echo "Unknown mode"
+		exit 1
+		;;
+esac