208 lines
6.2 KiB
Makefile
208 lines
6.2 KiB
Makefile
# This file is included by the global makefile so that you can add your own
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# architecture-specific flags and dependencies. Remember to do have actions
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# for "archclean" and "archdep" for cleaning up and making dependencies for
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# this architecture.
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#
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# This file is subject to the terms and conditions of the GNU General Public
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# License. See the file "COPYING" in the main directory of this archive
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# for more details.
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#
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# Copyright (C) 1994 by Linus Torvalds
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# Changes for PPC by Gary Thomas
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# Rewritten by Cort Dougan and Paul Mackerras
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#
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HAS_BIARCH := $(call cc-option-yn, -m32)
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# Set default 32 bits cross compilers for vdso and boot wrapper
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CROSS32_COMPILE ?=
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CROSS32CC := $(CROSS32_COMPILE)gcc
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CROSS32AS := $(CROSS32_COMPILE)as
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CROSS32LD := $(CROSS32_COMPILE)ld
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CROSS32OBJCOPY := $(CROSS32_COMPILE)objcopy
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ifeq ($(HAS_BIARCH),y)
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ifeq ($(CROSS32_COMPILE),)
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CROSS32CC := $(CC) -m32
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CROSS32AS := $(AS) -a32
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CROSS32LD := $(LD) -m elf32ppc
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CROSS32OBJCOPY := $(OBJCOPY)
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endif
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endif
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export CROSS32CC CROSS32AS CROSS32LD CROSS32OBJCOPY
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KBUILD_DEFCONFIG := $(shell uname -m)_defconfig
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ifeq ($(CONFIG_PPC64),y)
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OLDARCH := ppc64
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SZ := 64
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new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi)
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ifeq ($(new_nm),y)
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NM := $(NM) --synthetic
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endif
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else
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OLDARCH := ppc
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SZ := 32
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endif
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UTS_MACHINE := $(OLDARCH)
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ifeq ($(HAS_BIARCH),y)
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override AS += -a$(SZ)
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override LD += -m elf$(SZ)ppc
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override CC += -m$(SZ)
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endif
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LDFLAGS_vmlinux := -Bstatic
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# The -Iarch/$(ARCH)/include is temporary while we are merging
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CPPFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH) -Iarch/$(ARCH)/include
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AFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH)
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CFLAGS-$(CONFIG_PPC64) := -mminimal-toc -mtraceback=none -mcall-aixdesc
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CFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH) -ffixed-r2 -mmultiple
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CPPFLAGS += $(CPPFLAGS-y)
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AFLAGS += $(AFLAGS-y)
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CFLAGS += -msoft-float -pipe $(CFLAGS-y)
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CPP = $(CC) -E $(CFLAGS)
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# Temporary hack until we have migrated to asm-powerpc
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LINUXINCLUDE-$(CONFIG_PPC32) := -Iarch/$(ARCH)/include
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LINUXINCLUDE += $(LINUXINCLUDE-y)
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CHECKFLAGS += -m$(SZ) -D__powerpc__ -D__powerpc$(SZ)__
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ifeq ($(CONFIG_PPC64),y)
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GCC_BROKEN_VEC := $(shell if [ $(call cc-version) -lt 0400 ] ; then echo "y"; fi)
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ifeq ($(CONFIG_POWER4_ONLY),y)
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ifeq ($(CONFIG_ALTIVEC),y)
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ifeq ($(GCC_BROKEN_VEC),y)
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CFLAGS += $(call cc-option,-mcpu=970)
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else
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CFLAGS += $(call cc-option,-mcpu=power4)
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endif
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else
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CFLAGS += $(call cc-option,-mcpu=power4)
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endif
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else
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CFLAGS += $(call cc-option,-mtune=power4)
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endif
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endif
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# No AltiVec instruction when building kernel
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CFLAGS += $(call cc-option,-mno-altivec)
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# Enable unit-at-a-time mode when possible. It shrinks the
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# kernel considerably.
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CFLAGS += $(call cc-option,-funit-at-a-time)
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ifndef CONFIG_FSL_BOOKE
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CFLAGS += -mstring
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endif
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cpu-as-$(CONFIG_PPC64BRIDGE) += -Wa,-mppc64bridge
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cpu-as-$(CONFIG_4xx) += -Wa,-m405
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cpu-as-$(CONFIG_6xx) += -Wa,-maltivec
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cpu-as-$(CONFIG_POWER4) += -Wa,-maltivec
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cpu-as-$(CONFIG_E500) += -Wa,-me500
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cpu-as-$(CONFIG_E200) += -Wa,-me200
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AFLAGS += $(cpu-as-y)
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CFLAGS += $(cpu-as-y)
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head-y := arch/powerpc/kernel/head_32.o
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head-$(CONFIG_PPC64) := arch/powerpc/kernel/head_64.o
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head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o
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head-$(CONFIG_4xx) := arch/powerpc/kernel/head_4xx.o
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head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o
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head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o
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head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o
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head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o
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core-y += arch/powerpc/kernel/ \
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arch/powerpc/mm/ \
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arch/powerpc/lib/ \
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arch/powerpc/sysdev/ \
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arch/powerpc/platforms/
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core-$(CONFIG_PPC32) += arch/ppc/kernel/
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core-$(CONFIG_MATH_EMULATION) += arch/ppc/math-emu/
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core-$(CONFIG_XMON) += arch/powerpc/xmon/
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core-$(CONFIG_APUS) += arch/ppc/amiga/
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drivers-$(CONFIG_8xx) += arch/ppc/8xx_io/
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drivers-$(CONFIG_4xx) += arch/ppc/4xx_io/
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drivers-$(CONFIG_CPM2) += arch/ppc/8260_io/
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drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/
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# Default to zImage, override when needed
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defaultimage-y := zImage
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defaultimage-$(CONFIG_PPC_ISERIES) := vmlinux
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defaultimage-$(CONFIG_DEFAULT_UIMAGE) := uImage
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KBUILD_IMAGE := $(defaultimage-y)
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all: $(KBUILD_IMAGE)
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CPPFLAGS_vmlinux.lds := -Upowerpc
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BOOT_TARGETS = zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm uImage
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.PHONY: $(BOOT_TARGETS)
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boot := arch/$(ARCH)/boot
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$(BOOT_TARGETS): vmlinux
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$(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@)
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define archhelp
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@echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)'
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@echo ' install - Install kernel using'
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@echo ' (your) ~/bin/installkernel or'
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@echo ' (distribution) /sbin/installkernel or'
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@echo ' install to $$(INSTALL_PATH) and run lilo'
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@echo ' *_defconfig - Select default config from arch/$(ARCH)/configs'
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endef
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archclean:
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$(Q)$(MAKE) $(clean)=$(boot)
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$(Q)rm -rf arch/$(ARCH)/include
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archprepare: checkbin
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ifeq ($(CONFIG_PPC32),y)
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# Temporary hack until we have migrated to asm-powerpc
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include/asm: arch/$(ARCH)/include/asm
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arch/$(ARCH)/include/asm: FORCE
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$(Q)if [ ! -d arch/$(ARCH)/include ]; then mkdir -p arch/$(ARCH)/include; fi
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$(Q)ln -fsn $(srctree)/include/asm-$(OLDARCH) arch/$(ARCH)/include/asm
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endif
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# Use the file '.tmp_gas_check' for binutils tests, as gas won't output
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# to stdout and these checks are run even on install targets.
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TOUT := .tmp_gas_check
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# Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec
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# instructions.
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# gcc-3.4 and binutils-2.14 are a fatal combination.
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checkbin:
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@if test "$(call cc-version)" = "0304" ; then \
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if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \
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echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \
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echo 'correctly with gcc-3.4 and your version of binutils.'; \
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echo '*** Please upgrade your binutils or downgrade your gcc'; \
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false; \
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fi ; \
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fi
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@if ! /bin/echo dssall | $(AS) -many -o $(TOUT) >/dev/null 2>&1 ; then \
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echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \
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echo 'correctly with old versions of binutils.' ; \
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echo '*** Please upgrade your binutils to 2.12.1 or newer' ; \
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false ; \
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fi
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CLEAN_FILES += $(TOUT)
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