u-boot/arch/powerpc/cpu/ppc4xx/config.mk

#
# (C) Copyright 2000-2010
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
#
# SPDX-License-Identifier:	GPL-2.0+
#

PLATFORM_RELFLAGS += -meabi
PLATFORM_CPPFLAGS += -DCONFIG_4xx -ffixed-r2 -mstring -msoft-float

cfg=$(shell grep configs $(OBJTREE)/include/config.h | sed 's/.*<\(configs.*\)>/\1/')
is440:=$(shell grep CONFIG_440 $(TOPDIR)/include/$(cfg))

ifneq (,$(findstring CONFIG_440,$(is440)))
PLATFORM_CPPFLAGS += -Wa,-m440 -mcpu=440
else
PLATFORM_CPPFLAGS += -Wa,-m405 -mcpu=405
endif
Initial revision 2002-09-18 21:14:53 +00:00			`#`
arch/powerpc/*/config.mk: make CONFIG_SYS_LDSCRIPT settings work As we try to get rid of board specific config.mk files we must provide a way for board specific settings of the LDSCRIPT variable (path to the linker script) where needed. We now implement the following hierarchy: - Highest priority has a "#define CONFIG_SYS_LDCONFIG" in the board config file. - If CONFIG_SYS_LDCONFIG is not set, and the system is booting from NAND (CONFIG_NAND_SPL is set), then a board specific linker script board/$(BOARDDIR)/u-boot-nand.lds gets used. - If we are not booting from NAND, we test if a processor specific linker script arch/powerpc/cpu/$(CPU)/u-boot.lds exists; if so we use that. - As default, arch/powerpc/config.mk gets used. Signed-off-by: Wolfgang Denk <wd@denx.de> Cc: Stefan Roese <sr@denx.de> Cc: Kim Phillips <kim.phillips@freescale.com> Cc: Kumar Gala <kumar.gala@freescale.com> Cc: Andy Fleming <afleming@gmail.com> Acked-by: Stefan Roese <sr@denx.de> 2010-11-21 16:34:05 +01:00			`# (C) Copyright 2000-2010`
Initial revision 2002-09-18 21:14:53 +00:00			`# Wolfgang Denk, DENX Software Engineering, wd@denx.de.`
			`#`
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 09:37:19 +02:00			`# SPDX-License-Identifier: GPL-2.0+`
Initial revision 2002-09-18 21:14:53 +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 14:36:46 +01:00			`PLATFORM_RELFLAGS += -meabi`
PPC: Use r2 instead of r29 as global data pointer R29 was an unlucky choice as with recent toolchains (gcc-4.2.x) gcc will refuse to use load/store multiple insns; instead, it issues a list of simple load/store instructions upon function entry and exit, resulting in bigger code size, which in turn makes the build for a few boards fail. Use r2 instead. Signed-off-by: Wolfgang Denk <wd@denx.de> 2008-02-14 22:43:22 +01:00			`PLATFORM_CPPFLAGS += -DCONFIG_4xx -ffixed-r2 -mstring -msoft-float`
Initial revision 2002-09-18 21:14:53 +00:00
ppc4xx: Fix O=buildir builds This patch fixes the problem to assemble cpu/ppc4xx/start.S experienced last week where building failed having specified O=../build.sequoia. Signed-off-by: Niklaus Giger <niklaus.giger@nestal.com> 2007-06-25 16:50:55 +02:00			`cfg=$(shell grep configs $(OBJTREE)/include/config.h \| sed 's/.<\(configs.\)>/\1/')`
cpu/ppc4xx/config.mk: Make a needlessly deffered expansion immediate. This will reduce the build time. Signed-off-by: Shinya Kuribayashi <skuribay@ruby.dti.ne.jp> 2008-02-23 17:05:00 +09:00			`is440:=$(shell grep CONFIG_440 $(TOPDIR)/include/$(cfg))`
ppc4xx: Clean up 440 exceptions handling - Introduced dedicated switches for building 440 and 405 images required for 440-specific machine instructions like 'rfmci' etc. - Exception vectors moved to the proper location (_start moved away from the critical exception handler space, which it occupied) - CriticalInput now serviced (with default handler) - MachineCheck properly serviced (added a dedicated handler and return subroutine) - Overall cleanup of exceptions declared with STD_EXCEPTION macro (unused, unhandled and those not relevant for 4xx were eliminated) - Eliminated Linux leftovers, removed dead code Signed-off-by: Grzegorz Bernacki <gjb@semihalf.com> Signed-off-by: Rafal Jaworowski <raj@semihalf.com> Signed-off-by: Stefan Roese <sr@denx.de> 2007-06-15 11:19:28 +02:00
			`ifneq (,$(findstring CONFIG_440,$(is440)))`
			`PLATFORM_CPPFLAGS += -Wa,-m440 -mcpu=440`
			`else`
			`PLATFORM_CPPFLAGS += -Wa,-m405 -mcpu=405`
			`endif`