#
  # (C) Copyright 2000-2002
  # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  #
  # SPDX-License-Identifier:	GPL-2.0+
  #
  
  ifndef CONFIG_STANDALONE_LOAD_ADDR
  ifneq ($(CONFIG_OMAP_COMMON),)
  CONFIG_STANDALONE_LOAD_ADDR = 0x80300000
  else
  CONFIG_STANDALONE_LOAD_ADDR = 0xc100000
  endif
  endif
  
  LDFLAGS_FINAL += --gc-sections
  PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections \
  		     -fno-common -ffixed-r9
  PLATFORM_RELFLAGS += $(call cc-option, -msoft-float) \
        $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
  
  PLATFORM_CPPFLAGS += -D__ARM__
  
  # Choose between ARM/Thumb instruction sets
  ifeq ($(CONFIG_SYS_THUMB_BUILD),y)
  AFLAGS_IMPLICIT_IT	:= $(call as-option,-Wa$(comma)-mimplicit-it=always)
  PF_CPPFLAGS_ARM		:= $(AFLAGS_IMPLICIT_IT) \
  			$(call cc-option, -mthumb -mthumb-interwork,\
  			$(call cc-option,-marm,)\
  			$(call cc-option,-mno-thumb-interwork,)\
  		)
  else
  PF_CPPFLAGS_ARM := $(call cc-option,-marm,) \
  		$(call cc-option,-mno-thumb-interwork,)
  endif
  
  # Only test once
  ifneq ($(CONFIG_SPL_BUILD),y)
  ifeq ($(CONFIG_SYS_THUMB_BUILD),y)
  archprepare: checkthumb
  
  checkthumb:
  	@if test "$(call cc-version)" -lt "0404"; then \
  		echo -n '*** Your GCC does not produce working '; \
  		echo 'binaries in THUMB mode.'; \
  		echo '*** Your board is configured for THUMB mode.'; \
  		false; \
  	fi
  endif
  endif
  
  # Try if EABI is supported, else fall back to old API,
  # i. e. for example:
  # - with ELDK 4.2 (EABI supported), use:
  #	-mabi=aapcs-linux
  # - with ELDK 4.1 (gcc 4.x, no EABI), use:
  #	-mabi=apcs-gnu
  # - with ELDK 3.1 (gcc 3.x), use:
  #	-mapcs-32
  PF_CPPFLAGS_ABI := $(call cc-option,\
  			-mabi=aapcs-linux,\
  			$(call cc-option,\
  				-mapcs-32,\
  				$(call cc-option,\
  					-mabi=apcs-gnu,\
  				)\
  			)\
  		)
  PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_ARM) $(PF_CPPFLAGS_ABI)
  
  # For EABI, make sure to provide raise()
  ifneq (,$(findstring -mabi=aapcs-linux,$(PLATFORM_CPPFLAGS)))
  # This file is parsed many times, so the string may get added multiple
  # times. Also, the prefix needs to be different based on whether
  # CONFIG_SPL_BUILD is defined or not. 'filter-out' the existing entry
  # before adding the correct one.
  PLATFORM_LIBS := arch/arm/lib/eabi_compat.o \
  	$(filter-out arch/arm/lib/eabi_compat.o, $(PLATFORM_LIBS))
  endif
  
  # needed for relocation
  LDFLAGS_u-boot += -pie
  
  #
  # FIXME: binutils versions < 2.22 have a bug in the assembler where
  # branches to weak symbols can be incorrectly optimized in thumb mode
  # to a short branch (b.n instruction) that won't reach when the symbol
  # gets preempted
  #
  # http://sourceware.org/bugzilla/show_bug.cgi?id=12532
  #
  ifeq ($(CONFIG_SYS_THUMB_BUILD),y)
  ifeq ($(GAS_BUG_12532),)
  export GAS_BUG_12532:=$(shell if [ $(call binutils-version) -lt 0222 ] ; \
  	then echo y; else echo n; fi)
  endif
  ifeq ($(GAS_BUG_12532),y)
  PLATFORM_RELFLAGS += -fno-optimize-sibling-calls
  endif
  endif
  
  ifneq ($(CONFIG_SPL_BUILD),y)
  # Check that only R_ARM_RELATIVE relocations are generated.
  ALL-y += checkarmreloc
  # The movt / movw can hardcode 16 bit parts of the addresses in the
  # instruction. Relocation is not supported for that case, so disable
  # such usage by requiring word relocations.
  PLATFORM_CPPFLAGS += $(call cc-option, -mword-relocations)
  endif
  
  # limit ourselves to the sections we want in the .bin.
  ifdef CONFIG_ARM64
  OBJCOPYFLAGS += -j .text -j .rodata -j .data -j .u_boot_list -j .rela.dyn
  else
  OBJCOPYFLAGS += -j .text -j .secure_text -j .rodata -j .hash -j .data -j .got.plt -j .u_boot_list -j .rel.dyn
  endif
  
  ifdef CONFIG_OF_EMBED
  OBJCOPYFLAGS += -j .dtb.init.rodata
  endif
  
  ifneq ($(CONFIG_IMX_CONFIG),)
  ifdef CONFIG_SPL
  ifndef CONFIG_SPL_BUILD
  ALL-y += SPL
  endif
  else
  ifeq ($(CONFIG_OF_SEPARATE),y)
  ALL-y += u-boot-dtb.imx
  else
  ALL-y += u-boot.imx
  endif
  endif
  endif