efi: x86: Adjust EFI files support efi_loader

Add compiler flags and make a few minor adjustments to support the efi
loader.

Signed-off-by: Simon Glass <sjg@chromium.org>
[agraf: Add Kconfig dep]
Signed-off-by: Alexander Graf <agraf@suse.de>

arch/x86/config.mk

@@ -65,3 +65,19 @@ PLATFORM_LDFLAGS += --emit-relocs
 LDFLAGS_FINAL += --gc-sections -pie
 
 endif
+
+ifneq ($(CONFIG_EFI_STUB)$(CONFIG_CMD_BOOTEFI_HELLO),)
+
+ifneq ($(CONFIG_EFI_STUB_64BIT),)
+EFI_LDS := elf_x86_64_efi.lds
+EFI_CRT0 := crt0_x86_64_efi.o
+EFI_RELOC := reloc_x86_64_efi.o
+EFI_TARGET := --target=efi-app-ia32
+else
+EFI_LDS := elf_ia32_efi.lds
+EFI_CRT0 := crt0_ia32_efi.o
+EFI_RELOC := reloc_ia32_efi.o
+EFI_TARGET := --target=efi-app-x86_64
+endif
+
+endif

arch/x86/lib/Makefile

@@ -61,4 +61,9 @@ AFLAGS_crt0_x86_64_efi.o += -fpic -fshort-wchar
 
 extra-$(CONFIG_EFI_STUB_32BIT) += crt0_ia32_efi.o reloc_ia32_efi.o
 extra-$(CONFIG_EFI_STUB_64BIT) += crt0_x86_64_efi.o reloc_x86_64_efi.o
+
+endif
+
+ifneq ($(CONFIG_EFI_STUB)$(CONFIG_CMD_BOOTEFI_HELLO),)
+extra-y += $(EFI_CRT0) $(EFI_RELOC)
 endif

arch/x86/lib/elf_ia32_efi.lds

@@ -6,8 +6,6 @@
  * Modified from usr/lib32/elf_ia32_efi.lds in gnu-efi
  */
 
-#include <config.h>
-
 OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
 OUTPUT_ARCH(i386)
 ENTRY(_start)

arch/x86/lib/elf_x86_64_efi.lds

@@ -6,8 +6,6 @@
  * Modified from usr/lib32/elf_x86_64_efi.lds in gnu-efi
  */
 
-#include <config.h>
-
 OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64", "elf64-x86-64")
 OUTPUT_ARCH(i386:x86-64)
 ENTRY(_start)

cmd/Kconfig

@@ -183,7 +183,7 @@ config CMD_BOOTEFI
 
 config CMD_BOOTEFI_HELLO
 	bool "Allow booting a standard EFI hello world for testing"
-	depends on CMD_BOOTEFI && ARM
+	depends on CMD_BOOTEFI && (ARM || X86)
 	help
 	  This adds a standard EFI hello world application to U-Boot so that
 	  it can be used with the 'bootefi hello' command. This is useful