Commit graph

5 commits

Author SHA1 Message Date
Masahiro Yamada
bf1af3d872 ARM: merge commonly-defined PLATFORM_RELFLAGS
Before this commit, all arch/arm/cpu/${CPU}/config.mk except ARMv8
had the same option:
$(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,))

This commit moves it into arch/arm/config.mk.

If the compiler does not support the option,
it is ignored by $(call cc-option,...).
So this commit gives no harm to ARMv8.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2014-01-24 16:59:08 -05:00
Masahiro Yamada
3102274d8b ARM: refactor compiler options in config.mk
Every ARM cpu config.mk (arch/arm/cpu/{CPUDIR}/config.mk) defines:

PLATFORM_RELFLAGS += -fno-common -ffixed-r8 -msoft-float

So, this patch moves the common compiler options to arch/arm/config.mk.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2013-09-23 17:03:05 +02:00
Wolfgang Denk
1a4596601f 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>
2013-07-24 09:44:38 -04:00
Wolfgang Denk
cca4e4aec1 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>
2011-11-03 20:44:58 +01:00
Peter Tyser
84ad688473 arm: Move cpu/$CPU to arch/arm/cpu/$CPU
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
2010-04-13 09:13:24 +02:00
Renamed from cpu/arm920t/config.mk (Browse further)