kernel-ark/arch/powerpc/Makefile
Stephen Rothwell 0570d4ed43 [POWERPC] Create a zImage for legacy iSeries
This zImage is really just the stripped vmlinux, but it means that there
is one less special case for iSeries and also that the zImages will be
built for a combined kernel build that happens to include iSeries.

This zImage boots fine on legacy iSeries.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-06-02 21:01:56 +10:00

213 lines
6.2 KiB
Makefile

# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies. Remember to do have actions
# for "archclean" and "archdep" for cleaning up and making dependencies for
# this architecture.
#
# This file is subject to the terms and conditions of the GNU General Public
# License. See the file "COPYING" in the main directory of this archive
# for more details.
#
# Copyright (C) 1994 by Linus Torvalds
# Changes for PPC by Gary Thomas
# Rewritten by Cort Dougan and Paul Mackerras
#
HAS_BIARCH := $(call cc-option-yn, -m32)
# Set default 32 bits cross compilers for vdso and boot wrapper
CROSS32_COMPILE ?=
CROSS32CC := $(CROSS32_COMPILE)gcc
CROSS32AS := $(CROSS32_COMPILE)as
CROSS32LD := $(CROSS32_COMPILE)ld
CROSS32AR := $(CROSS32_COMPILE)ar
CROSS32OBJCOPY := $(CROSS32_COMPILE)objcopy
ifeq ($(HAS_BIARCH),y)
ifeq ($(CROSS32_COMPILE),)
CROSS32CC := $(CC) -m32
CROSS32AS := $(AS) -a32
CROSS32LD := $(LD) -m elf32ppc
CROSS32OBJCOPY := $(OBJCOPY)
CROSS32AR := GNUTARGET=elf32-powerpc $(AR)
endif
endif
export CROSS32CC CROSS32AS CROSS32LD CROSS32AR CROSS32OBJCOPY
KBUILD_DEFCONFIG := $(shell uname -m)_defconfig
ifeq ($(CONFIG_PPC64),y)
OLDARCH := ppc64
SZ := 64
new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi)
ifeq ($(new_nm),y)
NM := $(NM) --synthetic
endif
else
OLDARCH := ppc
SZ := 32
endif
UTS_MACHINE := $(OLDARCH)
ifeq ($(HAS_BIARCH),y)
override AS += -a$(SZ)
override LD += -m elf$(SZ)ppc
override CC += -m$(SZ)
override AR := GNUTARGET=elf$(SZ)-powerpc $(AR)
endif
LDFLAGS_vmlinux := -Bstatic
# The -Iarch/$(ARCH)/include is temporary while we are merging
CPPFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH) -Iarch/$(ARCH)/include
AFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH)
CFLAGS-$(CONFIG_PPC64) := -mminimal-toc -mtraceback=none -mcall-aixdesc
CFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH) -ffixed-r2 -mmultiple
CPPFLAGS += $(CPPFLAGS-y)
AFLAGS += $(AFLAGS-y)
CFLAGS += -msoft-float -pipe $(CFLAGS-y)
CPP = $(CC) -E $(CFLAGS)
# Temporary hack until we have migrated to asm-powerpc
LINUXINCLUDE-$(CONFIG_PPC32) := -Iarch/$(ARCH)/include
LINUXINCLUDE += $(LINUXINCLUDE-y)
CHECKFLAGS += -m$(SZ) -D__powerpc__ -D__powerpc$(SZ)__
ifeq ($(CONFIG_PPC64),y)
GCC_BROKEN_VEC := $(shell if [ $(call cc-version) -lt 0400 ] ; then echo "y"; fi)
ifeq ($(CONFIG_POWER4_ONLY),y)
ifeq ($(CONFIG_ALTIVEC),y)
ifeq ($(GCC_BROKEN_VEC),y)
CFLAGS += $(call cc-option,-mcpu=970)
else
CFLAGS += $(call cc-option,-mcpu=power4)
endif
else
CFLAGS += $(call cc-option,-mcpu=power4)
endif
else
CFLAGS += $(call cc-option,-mtune=power4)
endif
endif
# No AltiVec instruction when building kernel
CFLAGS += $(call cc-option,-mno-altivec)
# Enable unit-at-a-time mode when possible. It shrinks the
# kernel considerably.
CFLAGS += $(call cc-option,-funit-at-a-time)
# Never use string load/store instructions as they are
# often slow when they are implemented at all
CFLAGS += -mno-string
ifeq ($(CONFIG_6xx),y)
CFLAGS += -mcpu=powerpc
endif
cpu-as-$(CONFIG_4xx) += -Wa,-m405
cpu-as-$(CONFIG_6xx) += -Wa,-maltivec
cpu-as-$(CONFIG_POWER4) += -Wa,-maltivec
cpu-as-$(CONFIG_E500) += -Wa,-me500
cpu-as-$(CONFIG_E200) += -Wa,-me200
AFLAGS += $(cpu-as-y)
CFLAGS += $(cpu-as-y)
head-y := arch/powerpc/kernel/head_32.o
head-$(CONFIG_PPC64) := arch/powerpc/kernel/head_64.o
head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o
head-$(CONFIG_4xx) := arch/powerpc/kernel/head_4xx.o
head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o
head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o
head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o
head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o
core-y += arch/powerpc/kernel/ \
arch/powerpc/mm/ \
arch/powerpc/lib/ \
arch/powerpc/sysdev/ \
arch/powerpc/platforms/
core-$(CONFIG_MATH_EMULATION) += arch/powerpc/math-emu/
core-$(CONFIG_XMON) += arch/powerpc/xmon/
drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/
# Default to zImage, override when needed
defaultimage-y := zImage
defaultimage-$(CONFIG_DEFAULT_UIMAGE) := uImage
KBUILD_IMAGE := $(defaultimage-y)
all: $(KBUILD_IMAGE)
CPPFLAGS_vmlinux.lds := -Upowerpc
BOOT_TARGETS = zImage zImage.initrd zImage.dts zImage.dts_initrd uImage
PHONY += $(BOOT_TARGETS)
boot := arch/$(ARCH)/boot
$(BOOT_TARGETS): vmlinux
$(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
define archhelp
@echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
@echo ' install - Install kernel using'
@echo ' (your) ~/bin/installkernel or'
@echo ' (distribution) /sbin/installkernel or'
@echo ' install to $$(INSTALL_PATH) and run lilo'
@echo ' *_defconfig - Select default config from arch/$(ARCH)/configs'
endef
install:
$(Q)$(MAKE) $(build)=$(boot) BOOTIMAGE=$(KBUILD_IMAGE) install
archclean:
$(Q)$(MAKE) $(clean)=$(boot)
archmrproper:
$(Q)rm -rf arch/$(ARCH)/include
archprepare: checkbin
ifeq ($(CONFIG_PPC32),y)
# Temporary hack until we have migrated to asm-powerpc
include/asm: arch/$(ARCH)/include/asm
arch/$(ARCH)/include/asm: FORCE
$(Q)if [ ! -d arch/$(ARCH)/include ]; then mkdir -p arch/$(ARCH)/include; fi
$(Q)ln -fsn $(srctree)/include/asm-$(OLDARCH) arch/$(ARCH)/include/asm
endif
# Use the file '.tmp_gas_check' for binutils tests, as gas won't output
# to stdout and these checks are run even on install targets.
TOUT := .tmp_gas_check
# Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec
# instructions.
# gcc-3.4 and binutils-2.14 are a fatal combination.
checkbin:
@if test "$(call cc-version)" = "0304" ; then \
if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \
echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \
echo 'correctly with gcc-3.4 and your version of binutils.'; \
echo '*** Please upgrade your binutils or downgrade your gcc'; \
false; \
fi ; \
fi
@if ! /bin/echo dssall | $(AS) -many -o $(TOUT) >/dev/null 2>&1 ; then \
echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \
echo 'correctly with old versions of binutils.' ; \
echo '*** Please upgrade your binutils to 2.12.1 or newer' ; \
false ; \
fi
CLEAN_FILES += $(TOUT)