diff --git a/tools/firmware/Makefile b/tools/firmware/Makefile
index b840c6ab87..2ec20f81e6 100644
--- a/tools/firmware/Makefile
+++ b/tools/firmware/Makefile
@@ -21,7 +21,7 @@ ovmf-dir:
 
 seabios-dir:
 	GIT=$(GIT) $(XEN_ROOT)/scripts/git-checkout.sh $(SEABIOS_UPSTREAM_URL) $(SEABIOS_UPSTREAM_REVISION) seabios-dir
-	$(MAKE) -C seabios-dir defconfig
+	cp seabios-config seabios-dir/.config;
 
 .PHONY: all
 all: $(SUBDIRS-y)
diff --git a/tools/firmware/seabios-config b/tools/firmware/seabios-config
new file mode 100644
index 0000000000..4652f9b3b2
--- /dev/null
+++ b/tools/firmware/seabios-config
@@ -0,0 +1,108 @@
+#
+# SeaBIOS Configuration
+#
+
+#
+# General Features
+#
+# CONFIG_COREBOOT is not set
+CONFIG_QEMU=y
+# CONFIG_CSM is not set
+CONFIG_QEMU_HARDWARE=y
+CONFIG_XEN=y
+CONFIG_THREADS=y
+CONFIG_RELOCATE_INIT=y
+CONFIG_BOOTMENU=y
+CONFIG_BOOTSPLASH=y
+CONFIG_BOOTORDER=y
+CONFIG_ENTRY_EXTRASTACK=y
+CONFIG_MALLOC_UPPERMEMORY=y
+CONFIG_ROM_SIZE=0
+
+#
+# Hardware support
+#
+CONFIG_ATA=y
+CONFIG_ATA_DMA=y
+CONFIG_ATA_PIO32=y
+CONFIG_AHCI=y
+CONFIG_SDCARD=y
+CONFIG_VIRTIO_BLK=y
+CONFIG_VIRTIO_SCSI=y
+CONFIG_PVSCSI=y
+CONFIG_ESP_SCSI=y
+CONFIG_LSI_SCSI=y
+CONFIG_MEGASAS=y
+CONFIG_MPT_SCSI=y
+CONFIG_FLOPPY=y
+CONFIG_FLASH_FLOPPY=y
+CONFIG_PS2PORT=y
+CONFIG_USB=y
+CONFIG_USB_UHCI=y
+CONFIG_USB_OHCI=y
+CONFIG_USB_EHCI=y
+CONFIG_USB_XHCI=y
+CONFIG_USB_MSC=y
+CONFIG_USB_UAS=y
+CONFIG_USB_HUB=y
+CONFIG_USB_KEYBOARD=y
+CONFIG_USB_MOUSE=y
+CONFIG_SERIAL=y
+CONFIG_LPT=y
+CONFIG_RTC_TIMER=y
+CONFIG_HARDWARE_IRQ=y
+CONFIG_USE_SMM=y
+CONFIG_CALL32_SMM=y
+CONFIG_MTRR_INIT=y
+CONFIG_PMTIMER=y
+CONFIG_TSC_TIMER=y
+
+#
+# BIOS interfaces
+#
+CONFIG_DRIVES=y
+CONFIG_CDROM_BOOT=y
+CONFIG_CDROM_EMU=y
+CONFIG_PCIBIOS=y
+CONFIG_APMBIOS=y
+CONFIG_PNPBIOS=y
+CONFIG_OPTIONROMS=y
+CONFIG_PMM=y
+CONFIG_BOOT=y
+CONFIG_KEYBOARD=y
+CONFIG_KBD_CALL_INT15_4F=y
+CONFIG_MOUSE=y
+CONFIG_S3_RESUME=y
+CONFIG_VGAHOOKS=y
+# CONFIG_DISABLE_A20 is not set
+# CONFIG_WRITABLE_UPPERMEMORY is not set
+CONFIG_TCGBIOS=y
+
+#
+# BIOS Tables
+#
+CONFIG_PIRTABLE=y
+CONFIG_MPTABLE=y
+CONFIG_SMBIOS=y
+CONFIG_ACPI=y
+CONFIG_ACPI_DSDT=y
+CONFIG_FW_ROMFILE_LOAD=y
+
+#
+# VGA ROM
+#
+CONFIG_NO_VGABIOS=y
+# CONFIG_VGA_STANDARD_VGA is not set
+# CONFIG_VGA_CIRRUS is not set
+# CONFIG_VGA_BOCHS is not set
+# CONFIG_VGA_GEODEGX2 is not set
+# CONFIG_VGA_GEODELX is not set
+# CONFIG_BUILD_VGABIOS is not set
+CONFIG_VGA_EXTRA_STACK_SIZE=512
+
+#
+# Debugging
+#
+CONFIG_DEBUG_LEVEL=1
+# CONFIG_DEBUG_SERIAL is not set
+CONFIG_DEBUG_IO=y