configs/baseline: support UEFI

configs/baseline/efiboot/loader/entries/archiso-x86_64-linux.conf

+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+title   Arch Linux (x86_64, UEFI)
+linux   /%INSTALL_DIR%/boot/x86_64/vmlinuz-linux
+initrd  /%INSTALL_DIR%/boot/x86_64/initramfs-linux.img
+options archisobasedir=%INSTALL_DIR% archisolabel=%ARCHISO_LABEL%

configs/baseline/efiboot/loader/loader.conf

+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+timeout 3
+default archiso-x86_64-linux.conf

configs/baseline/profiledef.sh

@@ -7,6 +7,6 @@ iso_publisher="Arch Linux <https://www.archlinux.org>"
 iso_application="Arch Linux baseline"
 iso_version="$(date +%Y.%m.%d)"
 install_dir="arch"
-bootmodes=('bios.syslinux.mbr' 'bios.syslinux.eltorito')
+bootmodes=('bios.syslinux.mbr' 'bios.syslinux.eltorito' 'uefi-x64.systemd-boot.esp' 'uefi-x64.systemd-boot.eltorito')
 arch="x86_64"
 pacman_conf="pacman.conf"

configs/baseline/syslinux/syslinux-linux.cfg

@@ -2,7 +2,7 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 
 LABEL arch
-MENU LABEL Arch Linux
+MENU LABEL Arch Linux (x86_64, BIOS)
 LINUX boot/%ARCH%/vmlinuz-linux
 INITRD boot/%ARCH%/initramfs-linux.img
 APPEND archisobasedir=%INSTALL_DIR% archisolabel=%ARCHISO_LABEL%