diff --git a/src/mainboard/emulation/qemu-i440fx/Kconfig b/src/mainboard/emulation/qemu-i440fx/Kconfig
index dd11092bfa..436bb20d07 100644
--- a/src/mainboard/emulation/qemu-i440fx/Kconfig
+++ b/src/mainboard/emulation/qemu-i440fx/Kconfig
@@ -16,6 +16,7 @@ config BOARD_SPECIFIC_OPTIONS
 	select HAVE_ASAN_IN_ROMSTAGE
 	select NO_SMM
 	select BOOT_DEVICE_NOT_SPI_FLASH
+	select BOOT_DEVICE_MEMORY_MAPPED
 
 config VBOOT
 	select VBOOT_MUST_REQUEST_DISPLAY
diff --git a/src/mainboard/emulation/qemu-q35/Kconfig b/src/mainboard/emulation/qemu-q35/Kconfig
index 155540dd02..1fc82b5ff0 100644
--- a/src/mainboard/emulation/qemu-q35/Kconfig
+++ b/src/mainboard/emulation/qemu-q35/Kconfig
@@ -16,6 +16,7 @@ config BOARD_SPECIFIC_OPTIONS
 	select MAINBOARD_HAS_CHROMEOS
 	select SOUTHBRIDGE_INTEL_COMMON_ACPI_MADT
 	select BOOT_DEVICE_NOT_SPI_FLASH
+	select BOOT_DEVICE_MEMORY_MAPPED
 
 config VBOOT
 	select VBOOT_MUST_REQUEST_DISPLAY