arch/arm/config.mk

   1 #
   2 # (C) Copyright 2000-2002
   3 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4 #
   5 # See file CREDITS for list of people who contributed to this
   6 # project.
   7 #
   8 # This program is free software; you can redistribute it and/or
   9 # modify it under the terms of the GNU General Public License as
  10 # published by the Free Software Foundation; either version 2 of
  11 # the License, or (at your option) any later version.
  12 #
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program; if not, write to the Free Software
  20 # Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21 # MA 02111-1307 USA
  22 #
  23
  24 CROSS_COMPILE ?= arm-linux-
  25
  26 ifeq ($(BOARD),omap2420h4)
  27 STANDALONE_LOAD_ADDR = 0x80300000
  28 else
  29 ifeq ($(SOC),omap3)
  30 STANDALONE_LOAD_ADDR = 0x80300000
  31 else
  32 STANDALONE_LOAD_ADDR = 0xc100000
  33 endif
  34 endif
  35
  36 PLATFORM_CPPFLAGS += -DCONFIG_ARM -D__ARM__
  37
  38 # Explicitly specifiy 32-bit ARM ISA since toolchain default can be -mthumb:
  39 PLATFORM_CPPFLAGS += $(call cc-option,-marm,)
  40
  41 # Try if EABI is supported, else fall back to old API,
  42 # i. e. for example:
  43 # - with ELDK 4.2 (EABI supported), use:
  44 #       -mabi=aapcs-linux -mno-thumb-interwork
  45 # - with ELDK 4.1 (gcc 4.x, no EABI), use:
  46 #       -mabi=apcs-gnu -mno-thumb-interwork
  47 # - with ELDK 3.1 (gcc 3.x), use:
  48 #       -mapcs-32 -mno-thumb-interwork
  49 PLATFORM_CPPFLAGS += $(call cc-option,\
  50                                 -mabi=aapcs-linux -mno-thumb-interwork,\
  51                                 $(call cc-option,\
  52                                         -mapcs-32,\
  53                                         $(call cc-option,\
  54                                                 -mabi=apcs-gnu,\
  55                                         )\
  56                                 ) $(call cc-option,-mno-thumb-interwork,)\
  57                         )
  58
  59 # For EABI, make sure to provide raise()
  60 ifneq (,$(findstring -mabi=aapcs-linux,$(PLATFORM_CPPFLAGS)))
  61 # This file is parsed several times; make sure to add only once.
  62 ifeq (,$(findstring arch/arm/lib/eabi_compat.o,$(PLATFORM_LIBS)))
  63 PLATFORM_LIBS += $(OBJTREE)/arch/arm/lib/eabi_compat.o
  64 endif
  65 endif
  66 LDSCRIPT := $(SRCTREE)/$(CPUDIR)/u-boot.lds
  67
  68 # needed for relocation
  69 ifndef CONFIG_NAND_SPL
  70 LDFLAGS_u-boot += -pie
  71 endif