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# This file is included by the global makefile so that you can add your own
# architecture-specific flags and dependencies.
#
# 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
#
# This must match PAGE_OFFSET in include/asm-ppc/page.h.
KERNELLOAD := $(CONFIG_KERNEL_START)
HAS_BIARCH := $(call cc-option-yn, -m32)
ifeq ($(HAS_BIARCH),y)
AS := $(AS) -a32
LD := $(LD) -m elf32ppc
CC := $(CC) -m32
endif
LDFLAGS_vmlinux := -Ttext $(KERNELLOAD) -Bstatic
# The -Iarch/$(ARCH)/include is temporary while we are merging
KBUILD_CPPFLAGS += -Iarch/$(ARCH) -Iarch/$(ARCH)/include
KBUILD_AFLAGS += -Iarch/$(ARCH)
KBUILD_CFLAGS += -Iarch/$(ARCH) -msoft-float -pipe \
-ffixed-r2 -mmultiple
# No AltiVec instruction when building kernel
KBUILD_CFLAGS += $(call cc-option, -mno-altivec)
CPP = $(CC) -E $(KBUILD_CFLAGS)
# Temporary hack until we have migrated to asm-powerpc
LINUXINCLUDE += -Iarch/$(ARCH)/include
CHECKFLAGS += -D__powerpc__
cpu-as-$(CONFIG_4xx) += -Wa,-m405
cpu-as-$(CONFIG_6xx) += -Wa,-maltivec
KBUILD_AFLAGS += $(cpu-as-y)
KBUILD_CFLAGS += $(cpu-as-y)
# Default to the common case.
KBUILD_DEFCONFIG := ebony_defconfig
head-y := arch/ppc/kernel/head.o
head-$(CONFIG_8xx) := arch/ppc/kernel/head_8xx.o
head-$(CONFIG_4xx) := arch/ppc/kernel/head_4xx.o
head-$(CONFIG_44x) := arch/ppc/kernel/head_44x.o
head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o
core-y += arch/ppc/kernel/ arch/powerpc/kernel/ \
arch/ppc/platforms/ \
arch/ppc/mm/ arch/ppc/lib/ \
arch/ppc/syslib/ arch/powerpc/sysdev/ \
arch/powerpc/lib/
core-$(CONFIG_4xx) += arch/ppc/platforms/4xx/
core-$(CONFIG_MATH_EMULATION) += arch/powerpc/math-emu/
core-$(CONFIG_XMON) += arch/ppc/xmon/
drivers-$(CONFIG_8xx) += arch/ppc/8xx_io/
drivers-$(CONFIG_4xx) += arch/ppc/4xx_io/
drivers-$(CONFIG_CPM2) += arch/ppc/8260_io/
drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/
BOOT_TARGETS = zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm
PHONY += $(BOOT_TARGETS)
all: uImage zImage
CPPFLAGS_vmlinux.lds := -Upowerpc
# All the instructions talk about "make bzImage".
bzImage: zImage
boot := arch/$(ARCH)/boot
$(BOOT_TARGETS): vmlinux
$(Q)$(MAKE) $(build)=$(boot) $@
uImage: vmlinux
$(Q)$(MAKE) $(build)=$(boot)/images $(boot)/images/$@
define archhelp
@echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/images/zImage.*)'
@echo ' uImage - Create a bootable image for U-Boot / PPCBoot'
@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)/ppc/configs'
endef
archclean:
$(Q)$(MAKE) $(clean)=arch/ppc/boot
# Temporary hack until we have migrated to asm-powerpc
$(Q)rm -rf arch/$(ARCH)/include
archprepare: checkbin
# Temporary hack until we have migrated to asm-powerpc
include/asm: arch/$(ARCH)/include/asm
arch/$(ARCH)/include/asm:
$(Q)if [ ! -d arch/$(ARCH)/include ]; then mkdir -p arch/$(ARCH)/include; fi
$(Q)ln -fsn $(srctree)/include/asm-powerpc arch/$(ARCH)/include/asm
# 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)
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