wdenk | 39f0e5f | 2002-08-14 20:30:46 +0000 | [diff] [blame] | 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 | |
Mike Frysinger | 1ea6bcd | 2009-06-14 23:33:14 -0400 | [diff] [blame] | 24 | CROSS_COMPILE ?= arm-linux- |
| 25 | |
Wolfgang Denk | 8ae86b7 | 2011-02-04 14:25:17 +0100 | [diff] [blame] | 26 | ifndef CONFIG_STANDALONE_LOAD_ADDR |
Tom Rini | bd380cf | 2013-03-14 06:49:04 +0000 | [diff] [blame] | 27 | ifneq ($(CONFIG_AM33XX)$(CONFIG_OMAP34XX)$(CONFIG_OMAP44XX)$(CONFIG_OMAP54XX)$(CONFIG_TI814X),) |
Wolfgang Denk | 8ae86b7 | 2011-02-04 14:25:17 +0100 | [diff] [blame] | 28 | CONFIG_STANDALONE_LOAD_ADDR = 0x80300000 |
Mike Frysinger | 262ae0a | 2009-09-03 23:12:47 -0400 | [diff] [blame] | 29 | else |
Wolfgang Denk | 8ae86b7 | 2011-02-04 14:25:17 +0100 | [diff] [blame] | 30 | CONFIG_STANDALONE_LOAD_ADDR = 0xc100000 |
Mike Frysinger | 262ae0a | 2009-09-03 23:12:47 -0400 | [diff] [blame] | 31 | endif |
| 32 | endif |
| 33 | |
Simon Glass | 959daa2 | 2013-03-11 06:49:57 +0000 | [diff] [blame] | 34 | # Support generic board on ARM |
| 35 | __HAVE_ARCH_GENERIC_BOARD := y |
| 36 | |
wdenk | 39f0e5f | 2002-08-14 20:30:46 +0000 | [diff] [blame] | 37 | PLATFORM_CPPFLAGS += -DCONFIG_ARM -D__ARM__ |
Jean-Christophe PLAGNIOL-VILLARD | 10a451c | 2009-05-08 20:24:12 +0200 | [diff] [blame] | 38 | |
Aneesh V | 5356f54 | 2012-03-08 07:20:19 +0000 | [diff] [blame] | 39 | # Choose between ARM/Thumb instruction sets |
| 40 | ifeq ($(CONFIG_SYS_THUMB_BUILD),y) |
| 41 | PF_CPPFLAGS_ARM := $(call cc-option, -mthumb -mthumb-interwork,\ |
| 42 | $(call cc-option,-marm,)\ |
| 43 | $(call cc-option,-mno-thumb-interwork,)\ |
| 44 | ) |
| 45 | else |
| 46 | PF_CPPFLAGS_ARM := $(call cc-option,-marm,) \ |
| 47 | $(call cc-option,-mno-thumb-interwork,) |
| 48 | endif |
Wolfgang Denk | f772acf | 2009-08-17 13:17:29 +0200 | [diff] [blame] | 49 | |
Tom Rini | 06a119a | 2012-03-16 06:34:35 +0000 | [diff] [blame] | 50 | # Only test once |
| 51 | ifneq ($(CONFIG_SPL_BUILD),y) |
| 52 | ALL-$(CONFIG_SYS_THUMB_BUILD) += checkthumb |
| 53 | endif |
| 54 | |
Wolfgang Denk | f772acf | 2009-08-17 13:17:29 +0200 | [diff] [blame] | 55 | # Try if EABI is supported, else fall back to old API, |
| 56 | # i. e. for example: |
| 57 | # - with ELDK 4.2 (EABI supported), use: |
Aneesh V | 5356f54 | 2012-03-08 07:20:19 +0000 | [diff] [blame] | 58 | # -mabi=aapcs-linux |
Wolfgang Denk | f772acf | 2009-08-17 13:17:29 +0200 | [diff] [blame] | 59 | # - with ELDK 4.1 (gcc 4.x, no EABI), use: |
Aneesh V | 5356f54 | 2012-03-08 07:20:19 +0000 | [diff] [blame] | 60 | # -mabi=apcs-gnu |
Wolfgang Denk | f772acf | 2009-08-17 13:17:29 +0200 | [diff] [blame] | 61 | # - with ELDK 3.1 (gcc 3.x), use: |
Aneesh V | 5356f54 | 2012-03-08 07:20:19 +0000 | [diff] [blame] | 62 | # -mapcs-32 |
Wolfgang Denk | cca4e4a | 2011-11-01 20:54:02 +0000 | [diff] [blame] | 63 | PF_CPPFLAGS_ABI := $(call cc-option,\ |
Aneesh V | 5356f54 | 2012-03-08 07:20:19 +0000 | [diff] [blame] | 64 | -mabi=aapcs-linux,\ |
Wolfgang Denk | cca4e4a | 2011-11-01 20:54:02 +0000 | [diff] [blame] | 65 | $(call cc-option,\ |
| 66 | -mapcs-32,\ |
Wolfgang Denk | f772acf | 2009-08-17 13:17:29 +0200 | [diff] [blame] | 67 | $(call cc-option,\ |
Wolfgang Denk | cca4e4a | 2011-11-01 20:54:02 +0000 | [diff] [blame] | 68 | -mabi=apcs-gnu,\ |
| 69 | )\ |
Aneesh V | 5356f54 | 2012-03-08 07:20:19 +0000 | [diff] [blame] | 70 | )\ |
Wolfgang Denk | cca4e4a | 2011-11-01 20:54:02 +0000 | [diff] [blame] | 71 | ) |
| 72 | PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_ARM) $(PF_CPPFLAGS_ABI) |
Wolfgang Denk | f772acf | 2009-08-17 13:17:29 +0200 | [diff] [blame] | 73 | |
| 74 | # For EABI, make sure to provide raise() |
| 75 | ifneq (,$(findstring -mabi=aapcs-linux,$(PLATFORM_CPPFLAGS))) |
Aneesh V | 5253418 | 2011-07-19 05:51:41 +0000 | [diff] [blame] | 76 | # This file is parsed many times, so the string may get added multiple |
| 77 | # times. Also, the prefix needs to be different based on whether |
| 78 | # CONFIG_SPL_BUILD is defined or not. 'filter-out' the existing entry |
| 79 | # before adding the correct one. |
| 80 | ifdef CONFIG_SPL_BUILD |
| 81 | PLATFORM_LIBS := $(SPLTREE)/arch/arm/lib/eabi_compat.o \ |
| 82 | $(filter-out %/arch/arm/lib/eabi_compat.o, $(PLATFORM_LIBS)) |
| 83 | else |
| 84 | PLATFORM_LIBS := $(OBJTREE)/arch/arm/lib/eabi_compat.o \ |
| 85 | $(filter-out %/arch/arm/lib/eabi_compat.o, $(PLATFORM_LIBS)) |
Wolfgang Denk | f772acf | 2009-08-17 13:17:29 +0200 | [diff] [blame] | 86 | endif |
| 87 | endif |
Albert Aribaud | 92d5ecb | 2010-10-11 13:13:28 +0200 | [diff] [blame] | 88 | |
Albert Aribaud | 92d5ecb | 2010-10-11 13:13:28 +0200 | [diff] [blame] | 89 | # needed for relocation |
Stefano Babic | a4594e4 | 2011-01-27 06:03:49 +0000 | [diff] [blame] | 90 | LDFLAGS_u-boot += -pie |
Allen Martin | 0f20bb6 | 2012-07-18 13:45:53 +0000 | [diff] [blame] | 91 | |
| 92 | # |
| 93 | # FIXME: binutils versions < 2.22 have a bug in the assembler where |
| 94 | # branches to weak symbols can be incorrectly optimized in thumb mode |
| 95 | # to a short branch (b.n instruction) that won't reach when the symbol |
| 96 | # gets preempted |
| 97 | # |
| 98 | # http://sourceware.org/bugzilla/show_bug.cgi?id=12532 |
| 99 | # |
| 100 | ifeq ($(CONFIG_SYS_THUMB_BUILD),y) |
| 101 | ifeq ($(GAS_BUG_12532),) |
| 102 | export GAS_BUG_12532:=$(shell if [ $(call binutils-version) -lt 0222 ] ; \ |
| 103 | then echo y; else echo n; fi) |
| 104 | endif |
| 105 | ifeq ($(GAS_BUG_12532),y) |
| 106 | PLATFORM_RELFLAGS += -fno-optimize-sibling-calls |
| 107 | endif |
| 108 | endif |