mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-30 16:39:35 +00:00
96a8d409a7
Most EFI implementations use 64-bit. Add a way to build U-Boot as a 64-bit EFI payload. The payload unpacks a (32-bit) U-Boot and starts it. This can be enabled for x86 boards at present. Signed-off-by: Simon Glass <sjg@chromium.org> Improvements to how the payload is built: Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Bin Meng <bmeng.cn@gmail.com>
67 lines
1.8 KiB
Makefile
67 lines
1.8 KiB
Makefile
#
|
|
# (C) Copyright 2000-2002
|
|
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
|
#
|
|
# SPDX-License-Identifier: GPL-2.0+
|
|
#
|
|
|
|
CONFIG_STANDALONE_LOAD_ADDR ?= 0x40000
|
|
|
|
PLATFORM_CPPFLAGS += -fno-strict-aliasing
|
|
PLATFORM_CPPFLAGS += -fomit-frame-pointer
|
|
PF_CPPFLAGS_X86 := $(call cc-option, -fno-toplevel-reorder, \
|
|
$(call cc-option, -fno-unit-at-a-time)) \
|
|
$(call cc-option, -mpreferred-stack-boundary=2)
|
|
|
|
PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_X86)
|
|
PLATFORM_CPPFLAGS += -fno-dwarf2-cfi-asm
|
|
PLATFORM_CPPFLAGS += -march=i386 -m32
|
|
|
|
PLATFORM_RELFLAGS += -ffunction-sections -fvisibility=hidden
|
|
|
|
PLATFORM_LDFLAGS += -Bsymbolic -Bsymbolic-functions -m elf_i386
|
|
|
|
LDFLAGS_FINAL += --wrap=__divdi3 --wrap=__udivdi3
|
|
LDFLAGS_FINAL += --wrap=__moddi3 --wrap=__umoddi3
|
|
|
|
# This is used in the top-level Makefile which does not include
|
|
# PLATFORM_LDFLAGS
|
|
LDFLAGS_EFI_PAYLOAD := -Bsymbolic -Bsymbolic-functions -shared --no-undefined
|
|
|
|
OBJCOPYFLAGS_EFI := -j .text -j .sdata -j .data -j .dynamic -j .dynsym \
|
|
-j .rel -j .rela -j .reloc
|
|
|
|
CFLAGS_NON_EFI := -mregparm=3
|
|
CFLAGS_EFI := -fpic -fshort-wchar
|
|
|
|
ifeq ($(CONFIG_EFI_STUB_64BIT),)
|
|
CFLAGS_EFI += $(call cc-option, -mno-red-zone)
|
|
EFIARCH = ia32
|
|
EFIPAYLOAD_BFDTARGET = elf32-i386
|
|
else
|
|
EFIARCH = x86_64
|
|
EFIPAYLOAD_BFDTARGET = elf64-x86-64
|
|
endif
|
|
|
|
EFIPAYLOAD_BFDARCH = i386
|
|
|
|
LDSCRIPT_EFI := $(srctree)/$(CPUDIR)/efi/elf_$(EFIARCH)_efi.lds
|
|
EFISTUB := crt0-efi-$(EFIARCH).o reloc_$(EFIARCH).o
|
|
OBJCOPYFLAGS_EFI += --target=efi-app-$(EFIARCH)
|
|
|
|
CPPFLAGS_REMOVE_crt0-efi-$(EFIARCH).o += $(CFLAGS_NON_EFI)
|
|
CPPFLAGS_crt0-efi-$(EFIARCH).o += $(CFLAGS_EFI)
|
|
|
|
ifeq ($(CONFIG_EFI_APP),y)
|
|
|
|
PLATFORM_CPPFLAGS += $(CFLAGS_EFI)
|
|
LDFLAGS_FINAL += -znocombreloc -shared
|
|
LDSCRIPT := $(LDSCRIPT_EFI)
|
|
|
|
else
|
|
|
|
PLATFORM_CPPFLAGS += $(CFLAGS_NON_EFI)
|
|
PLATFORM_LDFLAGS += --emit-relocs
|
|
LDFLAGS_FINAL += --gc-sections -pie
|
|
|
|
endif
|