initrd is supported for xtensa in qemu 2.1beta

target/config/Config.in.target

@@ -186,7 +186,6 @@ config ADK_TARGET_ROOTFS_ISO
 config ADK_TARGET_ROOTFS_INITRAMFSARCHIVE
 	boolean "Archive usable for initramfs creation"
 	depends on !ADK_TARGET_SYSTEM_MIKROTIK_RB532
-	depends on !ADK_TARGET_SYSTEM_QEMU_XTENSA
 	help
 	  Use this option if your planning to create a initramfs,
 	  useful for adk-test-framework.