efi_loader: hook up in build environment

Now that we have all the bits and pieces ready for EFI payload loading
support, hook them up in Makefiles and KConfigs so that we can build.

Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
[trini: Enable only when we of OF_LIBFDT, disable on kwb and colibri_pxa270]
Signed-off-by: Tom Rini <trini@konsulko.com>

configs/colibri_pxa270_defconfig

@@ -5,3 +5,4 @@ CONFIG_TARGET_COLIBRI_PXA270=y
 # CONFIG_CMD_LOADS is not set
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_OF_LIBFDT=y
+# CONFIG_EFI_LOADER is not set

configs/kwb_defconfig

@@ -30,3 +30,4 @@ CONFIG_OF_LIBFDT=y
 CONFIG_USB=y
 CONFIG_USB_MUSB_HOST=y
 CONFIG_USB_STORAGE=y
+# CONFIG_EFI_LOADER is not set

lib/Kconfig

@@ -149,5 +149,6 @@ config SPL_OF_LIBFDT
 	  version of the device tree.
 
 source lib/efi/Kconfig
+source lib/efi_loader/Kconfig
 
 endmenu

lib/Makefile

@@ -8,6 +8,7 @@
 ifndef CONFIG_SPL_BUILD
 
 obj-$(CONFIG_EFI) += efi/
+obj-$(CONFIG_EFI_LOADER) += efi_loader/
 obj-$(CONFIG_RSA) += rsa/
 obj-$(CONFIG_LZMA) += lzma/
 obj-$(CONFIG_LZO) += lzo/

lib/efi_loader/Kconfig

@@ -0,0 +1,9 @@
+config EFI_LOADER
+	bool "Support running EFI Applications in U-Boot"
+	depends on (ARM64 || ARM) && OF_LIBFDT
+	default y
+	help
+	  Select this option if you want to run EFI applications (like grub2)
+	  on top of U-Boot. If this option is enabled, U-Boot will expose EFI
+	  interfaces to a loaded EFI application, enabling it to reuse U-Boot's
+	  device drivers.

lib/efi_loader/Makefile

@@ -0,0 +1,12 @@
+#
+# (C) Copyright 2016 Alexander Graf
+#
+#  SPDX-License-Identifier:     GPL-2.0+
+#
+
+# This file only gets included with CONFIG_EFI_LOADER set, so all
+# object inclusion implicitly depends on it
+
+obj-y += efi_image_loader.o efi_boottime.o efi_runtime.o efi_console.o
+obj-y += efi_memory.o
+obj-$(CONFIG_PARTITIONS) += efi_disk.o