u-boot/arch/powerpc/cpu/mpc85xx/config.mk

#
# (C) Copyright 2002,2003 Motorola Inc.
# Xianghua Xiao, X.Xiao@motorola.com
#
# SPDX-License-Identifier:	GPL-2.0+
#

PLATFORM_RELFLAGS += -meabi

PLATFORM_CPPFLAGS += -ffixed-r2 -Wa,-me500 -msoft-float -mno-string

# -mspe=yes is needed to have -mno-spe accepted by a buggy GCC;
# see "[PATCH,rs6000] make -mno-spe work as expected" on
# http://gcc.gnu.org/ml/gcc-patches/2008-04/msg00311.html
PF_CPPFLAGS_SPE := $(call cc-option,-mspe=yes) \
		   $(call cc-option,-mno-spe)
PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_SPE)
* Patches by Xianghua Xiao, 15 Oct 2003: - Added Motorola CPU 8540/8560 support (cpu/85xx) - Added Motorola MPC8540ADS board support (board/mpc8540ads) - Added Motorola MPC8560ADS board support (board/mpc8560ads) * Minor code cleanup 2003-10-15 23:53:47 +00:00			`#`
			`# (C) Copyright 2002,2003 Motorola Inc.`
			`# Xianghua Xiao, X.Xiao@motorola.com`
			`#`
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+`
* Patches by Xianghua Xiao, 15 Oct 2003: - Added Motorola CPU 8540/8560 support (cpu/85xx) - Added Motorola MPC8540ADS board support (board/mpc8540ads) - Added Motorola MPC8560ADS board support (board/mpc8560ads) * Minor code cleanup 2003-10-15 23:53:47 +00:00			`#`

PowerPC: Move -fPIC flag to common place The -fPIC flag belongs with -mrelocatable, move it there. Also change -fPIC to -fpic as this produces smaller binaries. However, currently -mrelocatable promotes -fpic to -fPIC, a fix for this is in upcoming gcc 4.6 or you can apply this small patch to gcc: diff --git a/gcc/config/rs6000/sysv4.h b/gcc/config/rs6000/sysv4.h index 8da8410..e4b8280 100644 --- a/gcc/config/rs6000/sysv4.h +++ b/gcc/config/rs6000/sysv4.h @@ -227,7 +227,8 @@ do { \ } \ \ else if (TARGET_RELOCATABLE) \ - flag_pic = 2; \ + if (!flag_pic) \ + flag_pic = 2; \ } while (0) #ifndef RS6000_BI_ARCH -- Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> 2010-12-06 13:36:46 +00:00			`PLATFORM_RELFLAGS += -meabi`
* Patches by Xianghua Xiao, 15 Oct 2003: - Added Motorola CPU 8540/8560 support (cpu/85xx) - Added Motorola MPC8540ADS board support (board/mpc8540ads) - Added Motorola MPC8560ADS board support (board/mpc8560ads) * Minor code cleanup 2003-10-15 23:53:47 +00:00
85xx: Remove redudant PLATFORM_CPPFLAGS For historic reasons we had defined some additional PLATFORM_CPPFLAGS like: PLATFORM_CPPFLAGS += -DCONFIG_E500=1 PLATFORM_CPPFLAGS += -DCONFIG_MPC85xx=1 PLATFORM_CPPFLAGS += -DCONFIG_MPC8548=1 However these are all captured in the config.h and thus redudant. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> 2009-08-06 23:28:34 +00:00			`PLATFORM_CPPFLAGS += -ffixed-r2 -Wa,-me500 -msoft-float -mno-string`
ppc/85xx: Fix crashes due to generation of SPE instruction U-Boot crashed on the last instruction: int parse_stream_outer(struct in_str inp, int flag) { effa4784: 94 21 ff 38 stwu r1,-200(r1) effa4788: 7c 08 02 a6 mflr r0 effa478c: 42 9f 00 05 bcl- 20,4cr7+so,effa4790 <parse_stream_outer+0xc> effa4790: 7d 80 00 26 mfcr r12 effa4794: 13 c1 b3 21 evstdd r30,176(r1) ...which is a SPE instruction, although -mno-spe was used. tmp/cross/ppce500v2/bin/powerpc-angstrom-linux-gnuspe-gcc --version powerpc-angstrom-linux-gnuspe-gcc (GCC) 4.3.3 Seems to be a known issue (since 2008-04?!) Googled some, turns out this patch/workaround works for me on MPC8536DS. See http://gcc.gnu.org/ml/gcc-patches/2008-04/msg00311.html for more info Signed-off-by: Leon Woestenberg <leon@sidebranch.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org> 2009-10-26 09:03:32 +00:00
			`# -mspe=yes is needed to have -mno-spe accepted by a buggy GCC;`
			`# see "[PATCH,rs6000] make -mno-spe work as expected" on`
			`# http://gcc.gnu.org/ml/gcc-patches/2008-04/msg00311.html`
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_CPPFLAGS_SPE := $(call cc-option,-mspe=yes) \`
			`$(call cc-option,-mno-spe)`
			`PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_SPE)`