x86: efi-payload64: Add support for SCSI devices

U-Boot at VirtualBox must load Linux and boot configuration from disk devices.
Here the discs at AHCI (scsi) bus are used to load the needed boot data.

Signed-off-by: Thomas Mittelstaedt <thomas.mittelstaedt@de.bosch.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
[Added 'efi-payload64' tag and rebased on top of u-boot/master]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/configs/efi-x86_payload64_defconfig b/configs/efi-x86_payload64_defconfig
index 80460d3..9b45e06 100644
--- a/configs/efi-x86_payload64_defconfig
+++ b/configs/efi-x86_payload64_defconfig
@@ -7,11 +7,11 @@
 CONFIG_TARGET_EFI_PAYLOAD=y
 CONFIG_FIT=y
 CONFIG_FIT_SIGNATURE=y
+CONFIG_LEGACY_IMAGE_FORMAT=y
 CONFIG_SHOW_BOOT_PROGRESS=y
 CONFIG_USE_BOOTARGS=y
 CONFIG_BOOTARGS="root=/dev/sdb3 init=/sbin/init rootwait ro"
 CONFIG_USE_BOOTCOMMAND=y
-CONFIG_BOOTCOMMAND="ext2load scsi 0:3 01000000 /boot/vmlinuz; zboot 01000000"
 CONFIG_PRE_CONSOLE_BUFFER=y
 CONFIG_SYS_CONSOLE_INFO_QUIET=y
 CONFIG_DISPLAY_BOARDINFO_LATE=y
@@ -35,6 +35,9 @@
 CONFIG_ISO_PARTITION=y
 CONFIG_EFI_PARTITION=y
 CONFIG_ENV_OVERWRITE=y
+CONFIG_ENV_IS_IN_FAT=y
+CONFIG_ENV_FAT_INTERFACE="scsi"
+CONFIG_ENV_FAT_DEVICE_AND_PART="0:1"
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
 CONFIG_USE_BOOTFILE=y
 CONFIG_BOOTFILE="bzImage"