tools/run_guest_kernel: Add option yo set EFI system partition

The property "/chosen/asahi,efi-system-partition" is used to determine
the partition to load the firmware from. The firmware archives are
device specific and may contain device specific calibration data. Using
the same mechanism to load firmware as installed systems ensures that
the device specific firmware and calibration data is used and all
devices can be tested.
Having to specify the partition UUID is not a nice solution so querying
the value from the running m1n1 via proxy commands would be a better
solution.

Signed-off-by: Janne Grunau <[email protected]>

Author: jannau

proxyclient/tools/run_guest_kernel.sh

@@ -4,14 +4,37 @@ set -e
 : ${TMPDIR:=$XDG_RUNTIME_DIR}
 : ${TMPDIR:=/tmp}
 
-if [ "$1" == "-k" ]; then
-    kernel="$(realpath "$2")"
-    shift 2
-fi
+show_usage() {
+    echo "Usage:"
+    echo "  $0 OPTIONS <kernel build root> [kernel commandline] [initramfs]"
+    echo
+    echo "    -k IMAGE             Use $IMAGE as kernel image name (full path)"
+    echo "    -e ESP_PART_UUID     Use $ESP_PART_UUID as EFI system partition for fw loading"
+    echo "    -h                   Print this usage information"
+}
+
+while [[ -n "${1}" ]]; do
+    case "${1}" in
+    -k|--kernel)
+        kernel="$(realpath "${2}")"
+        shift 2
+        ;;
+    -e|--efi)
+        esp="${2}"
+        shift 2
+        ;;
+    -h|--help)
+        show_usage
+        exit 1
+        ;;
+    *)
+        break
+        ;;
+    esac
+done
 
 if [ ! -d "$1" ]; then
-    echo "Usage:"
-    echo "  $0 <kernel build root> [kernel commandline] [initramfs]"
+    show_usage
     exit 1
 fi
 
@@ -21,7 +44,7 @@ initramfs=""
 shift 2
 
 if [ "$1" == "--" ]; then
-	shift
+    shift
 elif [ -n "$1" ]; then
     initramfs="$(realpath "$1")"
     shift
@@ -38,6 +61,9 @@ cp "$base"/../../build/m1n1.bin "$TMPDIR/m1n1-linux.bin"
 if [ -n "$args" ]; then
     echo "chosen.bootargs=$args" >>"$TMPDIR/m1n1-linux.bin"
 fi
+if [ -n "${esp}" ]; then
+    echo "chosen.asahi,efi-system-partition=${esp}" >>"$TMPDIR/m1n1-linux.bin"
+fi
 
 cat "$kernel_base"/arch/arm64/boot/dts/apple/*.dtb >>"$TMPDIR/m1n1-linux.bin"
 if [[ "$kernel" == *.gz ]]; then