u-boot/arch/arm/cpu/arm946es/config.mk

#
# (C) Copyright 2002
# Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
#
# SPDX-License-Identifier:	GPL-2.0+
#

PLATFORM_CPPFLAGS +=  -march=armv4
# =========================================================================
#
# Supply options according to compiler version
#
# =========================================================================
PF_RELFLAGS_SLB_AT := $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))
PLATFORM_RELFLAGS += $(PF_RELFLAGS_SLB_AT)
Add ARM946E cpu and core module targets; remap memory to 0x00000000 Patch by Peter Pearse, 2 Feb 2005 2005-09-24 23:48:28 +00:00			`#`
			`# (C) Copyright 2002`
Fix e-mail address of Gary Jennejohn. Signed-off-by: Detlev Zundel <dzu@denx.de> 2009-05-13 08:54:10 +00:00			`# Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>`
Add ARM946E cpu and core module targets; remap memory to 0x00000000 Patch by Peter Pearse, 2 Feb 2005 2005-09-24 23:48:28 +00:00			`#`
Add GPL-2.0+ SPDX-License-Identifier to source files Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com> 2013-07-08 07:37:19 +00:00			`# SPDX-License-Identifier: GPL-2.0+`
Add ARM946E cpu and core module targets; remap memory to 0x00000000 Patch by Peter Pearse, 2 Feb 2005 2005-09-24 23:48:28 +00:00			`#`

			`PLATFORM_CPPFLAGS += -march=armv4`
ARM: fix warning: target CPU does not support interworking This patch fixes warnings like this: start.S:0: warning: target CPU does not support interworking which come from some ARM cross compilers and are caused by hard-coded (with "--with-cpu=arm9" configuration option) ARM targets (which support ARM Thumb instructions), while the ARM target selected from the command line (with "-march=armv4") doesn't support Thumb instructions. This warning is issued by the compiler regardless of the real use of the Thumb instructions in code. To fix this problem, we use options according to compiler version being used. Signed-off-by: Sergei Poselenov <sposelenov@emcraft.com> Signed-off-by: Wolfgang Denk <wd@denx.de> 2008-08-14 12:08:28 +00:00			`# =========================================================================`
			`#`
			`# Supply options according to compiler version`
			`#`
			`# =========================================================================`
Reduce build times U-Boot Makefiles contain a number of tests for compiler features etc. which so far are executed again and again. On some architectures (especially ARM) this results in a large number of calls to gcc. This patch makes sure to run such tests only once, thus largely reducing the number of "execve" system calls. Example: number of "execve" system calls for building the "P2020DS" (Power Architecture) and "qong" (ARM) boards, measured as: -> strace -f -e trace=execve -o /tmp/foo ./MAKEALL <board> -> grep execve /tmp/foo \| wc -l Before: After: Reduction: ================================== P2020DS 20555 15205 -26% qong 31692 14490 -54% As a result, built times are significantly reduced, typically by 30...50%. Signed-off-by: Wolfgang Denk <wd@denx.de> Cc: Andy Fleming <afleming@gmail.com> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Albert Aribaud <albert.aribaud@free.fr> cc: Graeme Russ <graeme.russ@gmail.com> cc: Mike Frysinger <vapier@gentoo.org> Tested-by: Graeme Russ <graeme.russ@gmail.com> Tested-by: Matthias Weisser <weisserm@arcor.de> Tested-by: Sanjeev Premi <premi@ti.com> Tested-by: Simon Glass <sjg@chromium.org> Tested-by: Macpaul Lin <macpaul@gmail.com> Acked-by: Mike Frysinger <vapier@gentoo.org> 2011-11-01 20:54:02 +00:00			`PF_RELFLAGS_SLB_AT := $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))`
			`PLATFORM_RELFLAGS += $(PF_RELFLAGS_SLB_AT)`