efi: Add support for loading U-Boot through an EFI stub

[karo-tx-uboot.git] / Makefile

diff --git a/Makefile b/Makefile
index 397242465dc4f43d691bbc022fcf4d6cc44f6d14..e19a4cf2c94fc04d2d89eb6c8046d6a4552ea516 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -755,6 +755,7 @@ ALL-$(CONFIG_SPL) += $(CONFIG_SPL_TARGET:"%"=%)
 endif
 ALL-$(CONFIG_REMAKE_ELF) += u-boot.elf
 ALL-$(CONFIG_EFI_APP) += u-boot-app.efi
+ALL-$(CONFIG_EFI_STUB) += u-boot-payload.efi
 
 ifneq ($(BUILD_ROM),)
 ALL-$(CONFIG_X86_RESET_VECTOR) += u-boot.rom
@@ -790,6 +791,9 @@ cmd_objcopy = $(OBJCOPY) --gap-fill=0xff $(OBJCOPYFLAGS) \
 quiet_cmd_zobjcopy = OBJCOPY $@
 cmd_zobjcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@
 
+quiet_cmd_efipayload = OBJCOPY $@
+cmd_efipayload = $(OBJCOPY) -I binary -O $(EFIPAYLOAD_BFDTARGET) -B $(EFIPAYLOAD_BFDARCH) $< $@
+
 quiet_cmd_mkimage = MKIMAGE $@
 cmd_mkimage = $(objtree)/tools/mkimage $(MKIMAGEFLAGS_$(@F)) -d $< $@ \
        $(if $(KBUILD_VERBOSE:1=), >/dev/null)
@@ -1090,6 +1094,26 @@ OBJCOPYFLAGS_u-boot-app.efi := $(OBJCOPYFLAGS_EFI)
 u-boot-app.efi: u-boot FORCE
        $(call if_changed,zobjcopy)
 
+u-boot-dtb.bin.o: u-boot-dtb.bin FORCE
+       $(call if_changed,efipayload)
+
+u-boot-payload.lds: $(LDSCRIPT_EFI) FORCE
+       $(call if_changed_dep,cpp_lds)
+
+# Rule to link the EFI payload which contains a stub and a U-Boot binary
+quiet_cmd_u-boot_payload ?= LD      $@
+      cmd_u-boot_payload ?= $(LD) $(LDFLAGS_EFI_PAYLOAD) -o $@ \
+      -T u-boot-payload.lds \
+      lib/efi/efi.o lib/efi/efi_stub.o u-boot-dtb.bin.o \
+      $(addprefix arch/$(ARCH)/lib/efi/,$(EFISTUB))
+
+u-boot-payload: u-boot-dtb.bin.o u-boot-payload.lds FORCE
+       $(call if_changed,u-boot_payload)
+
+OBJCOPYFLAGS_u-boot-payload.efi := $(OBJCOPYFLAGS_EFI)
+u-boot-payload.efi: u-boot-payload FORCE
+       $(call if_changed,zobjcopy)
+
 u-boot-img.bin: spl/u-boot-spl.bin u-boot.img FORCE
        $(call if_changed,cat)