u-boot/arch/avr32/config.mk

#
# (C) Copyright 2000-2002
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
#
# See file CREDITS for list of people who contributed to this
# project.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of
# the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
# MA 02111-1307 USA
#

CROSS_COMPILE ?= avr32-linux-

CONFIG_STANDALONE_LOAD_ADDR ?= 0x00000000

PLATFORM_RELFLAGS	+= -ffixed-r5 -fPIC -mno-init-got -mrelax
PLATFORM_RELFLAGS	+= -ffunction-sections -fdata-sections

LDFLAGS_u-boot		= --gc-sections --relax

LDSCRIPT			= $(SRCTREE)/$(CPUDIR)/u-boot.lds
Add AVR32 architecture support Patch by Haavard Skinnemoen, 6 Sep 2006 16:23:02 +0200 This patch adds common infrastructure code for the Atmel AVR32 architecture. See doc/README.AVR32 for details. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> 2006-10-24 12:21:16 +00:00			`#`
			`# (C) Copyright 2000-2002`
			`# Wolfgang Denk, DENX Software Engineering, wd@denx.de.`
			`#`
			`# See file CREDITS for list of people who contributed to this`
			`# project.`
			`#`
			`# This program is free software; you can redistribute it and/or`
			`# modify it under the terms of the GNU General Public License as`
			`# published by the Free Software Foundation; either version 2 of`
			`# the License, or (at your option) any later version.`
			`#`
			`# This program is distributed in the hope that it will be useful,`
			`# but WITHOUT ANY WARRANTY; without even the implied warranty of`
			`# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
			`# GNU General Public License for more details.`
			`#`
			`# You should have received a copy of the GNU General Public License`
			`# along with this program; if not, write to the Free Software`
			`# Foundation, Inc., 59 Temple Place, Suite 330, Boston,`
			`# MA 02111-1307 USA`
			`#`

push CROSS_COMPILE out to $(ARCH)_config.mk Each arch should handle setting a proper default CROSS_COMPILE value in their own config.mk file rather than having to maintain a large ugly list in the Makefile. By using conditional assignment, we don't have to worry about the variable already being set (env/cmdline/etc...). The common config.mk file takes care of exporting CROSS_COMPILE already, and while a few variables (toolchain ones) utilize CROSS_COMPILE before including the arch config.mk, they do so with deferred assignment. Signed-off-by: Mike Frysinger <vapier@gentoo.org> 2009-06-15 03:33:14 +00:00			`CROSS_COMPILE ?= avr32-linux-`

Make STANDALONE_LOAD_ADDR configurable per board Rename STANDALONE_LOAD_ADDR into CONFIG_STANDALONE_LOAD_ADDR and allow that the architecture-specific default value gets overwritten by defining the value in the board header file. Signed-off-by: Wolfgang Denk <wd@denx.de> Cc: Mike Frysinger <vapier@gentoo.org> Cc: Shinya Kuribayashi <skuribay@ruby.dti.ne.jp> Cc: Daniel Hellstrom <daniel@gaisler.com> Cc: Tsi Chung Liew <tsi-chung.liew@freescale.com> Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org> 2011-02-04 13:25:17 +00:00			`CONFIG_STANDALONE_LOAD_ADDR ?= 0x00000000`
push LOAD_ADDR out to arch mk files Rather than maintain/extend the current ifeq($(ARCH)) mess that exists in the standalone Makefile, push the setting up of LOAD_ADDR out to the arch config.mk (and rename to STANDALONE_LOAD_ADDR in the process). This keeps the common code clean and lets the arch do whatever crazy crap it wants in its own area. Signed-off-by: Mike Frysinger <vapier@gentoo.org> 2009-09-04 03:12:47 +00:00
AVR32: Build position-independent u-boot Add -fPIC -mno-init-got to the avr32-specific CFLAGS to make u-boot position independent. This will make relocation a lot easier. -mno-init-got means that gcc shouldn't emit code to load the GOT address into r6 in every function prologue. We do it once and for all in the early startup assembly code, so enabling this option makes u-boot a bit faster and smaller. The assembly parts have always been position-independent, so no code changes should be necessary. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> 2006-11-18 16:32:31 +00:00			`PLATFORM_RELFLAGS += -ffixed-r5 -fPIC -mno-init-got -mrelax`
avr32/config.mk: simplify PLATFORM_RELFLAGS This patch removes PLATFORM_RELFLAGS from board specific config.mk files and define them in arch specific config.mk file. Signed-off-by: Andreas Bießmann <biessmann@corscience.de> 2011-04-18 04:12:33 +00:00			`PLATFORM_RELFLAGS += -ffunction-sections -fdata-sections`

avr32: fix linking This patch fixes following error: ---8<--- avr32-linux-ld: --gc-sections and -r may not be used together --->8--- Since 8aba9dceebb14144e07d19593111ee3a999c37fc all avr32 boards are broken due to linking error as seen above. Signed-off-by: Andreas Bießmann <biessmann@corscience.de> 2011-02-09 04:10:30 +00:00			`LDFLAGS_u-boot = --gc-sections --relax`
avr32: use single linker script This patch move the atstk100x linker script to $(CPUDIR) and delete other pure copies of this file in each board directory. Signed-off-by: Andreas Bießmann <biessmann@corscience.de> 2011-04-18 04:12:34 +00:00
			`LDSCRIPT = $(SRCTREE)/$(CPUDIR)/u-boot.lds`