# 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 $(AR) endif LDFLAGS_vmlinux := -Bstatic CPPFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH) AFLAGS-$(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 $(CFLAGS) CHECKFLAGS += -m$(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_40x) := arch/powerpc/kernel/head_40x.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 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) archprepare: checkbin # 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 test "$(call cc-fullversion)" = "040200" \ && test "x${CONFIG_MODULES}${CONFIG_PPC64}" = "xyy" ; then \ echo -n '*** GCC-4.2.0 cannot compile the 64-bit powerpc ' ; \ echo 'kernel with modules enabled.' ; \ echo -n '*** Please use a different GCC version or ' ; \ echo 'disable kernel modules' ; \ false ; \ 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)