Add ec-launch.sh script

This script allows you to quickly launch renode for an EC image.
Since, it is designed to be included in PATH, I added the prefix
"renode-".

renode-ec-launch.sh

@@ -0,0 +1,81 @@
+#!/bin/bash
+#
+# Launch an EC image in renode.
+
+DEFAULT_EC_ROOT="$HOME/chromiumos/src/platform/ec"
+DEFAULT_BOARD="bloonchipper"
+DEFAULT_PROJECT="ec"
+
+SCRIPT_NAME="$(basename ${BASH_SOURCE[0]})"
+SCRIPT_PATH="$(dirname ${BASH_SOURCE[0]})"
+
+usage() {
+	echo "Usage: ${SCRIPT_NAME} [ec-path] [board-name] [project-name]"
+	echo ""
+	echo "Launch an EC image in renode. This can be the actual firmware image"
+	echo "or an on-board test image."
+	echo ""
+	echo "Environment Variables:"
+	echo "  BOARD overrides board-name argument."
+	echo "  PROJECT overrides project-name argument."
+	echo ""
+	echo "Args:"
+	echo "  ec-path is the path to the EC source root dir [${DEFAULT_EC_ROOT}]"
+	echo "  board-name is the name of the EC board [${DEFAULT_BOARD}]"
+	echo "  project-name is the name of the EC project [${DEFAULT_PROJECT}]"
+	echo "    This is normally ec for the main firmware image and the test"
+	echo "    name for an on-board test image."
+	echo ""
+	echo "Examples:"
+	echo "  ${SCRIPT_NAME}"
+	echo "  ${SCRIPT_NAME} ${DEFAULT_EC_ROOT} bloonchipper abort"
+	echo "  BOARD=dartmonkey ${SCRIPT_NAME}"
+	echo "  PROJECT=always_memset ${SCRIPT_NAME}"
+}
+
+main() {
+	local ec_root_dir="${1:-${DEFAULT_EC_ROOT}}"
+	local board="${2:-${BOARD:-${DEFAULT_BOARD}}}"
+	local project="${3:-${PROJECT:-${DEFAULT_PROJECT}}}"
+
+	for arg; do
+		case "${arg}" in
+			--help|-h)
+				usage
+				return 0
+				;;
+		esac
+	done
+
+	# Since we are going to cd later, we need to capture the absolute path.
+	local ec_dir="$(realpath "${ec_root_dir}")"
+	local out="${ec_dir}/build/${board}"
+
+	if [[ "${project}" != "ec" ]]; then
+		out+="/${project}"
+	fi
+
+	local bin="${out}/${project}.bin"
+	local elf_ro="${out}/RO/${project}.RO.elf"
+	local elf_rw="${out}/RW/${project}.RW.elf"
+
+	# We need to run the "include @${BOARD}.resc" from within the
+	# cros-platform-ec-tester dir.
+	cd "${SCRIPT_PATH}"
+
+	EXECUTE=( )
+	EXECUTE+=( "\$bin='${bin}';" )
+	EXECUTE+=( "\$elf_ro='${elf_ro}';" )
+	EXECUTE+=( "\$elf_rw='${elf_rw}';" )
+	EXECUTE+=( "include @${board}.resc;" )
+	EXECUTE+=( "start;" )
+
+	CMD=( renode )
+	CMD+=( --console )
+	CMD+=( --execute "${EXECUTE[*]}" )
+
+	echo "${CMD[@]}"
+	exec "${CMD[@]}"
+}
+
+main "$@"