# 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 CROSS32AR := $(CROSS32_COMPILE)ar ifeq ($(HAS_BIARCH),y) ifeq ($(CROSS32_COMPILE),) CROSS32CC := $(CC) -m32 CROSS32AR := GNUTARGET=elf32-powerpc $(AR) endif endif export CROSS32CC CROSS32AR ifeq ($(CROSS_COMPILE),) KBUILD_DEFCONFIG := $(shell uname -m)_defconfig else KBUILD_DEFCONFIG := ppc64_defconfig endif ifeq ($(CONFIG_PPC64),y) OLDARCH := ppc64 new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi) ifeq ($(new_nm),y) NM := $(NM) --synthetic endif else OLDARCH := ppc endif # It seems there are times we use this Makefile without # including the config file, but this replicates the old behaviour ifeq ($(CONFIG_WORD_SIZE),) CONFIG_WORD_SIZE := 32 endif UTS_MACHINE := $(OLDARCH) ifeq ($(HAS_BIARCH),y) override AS += -a$(CONFIG_WORD_SIZE) override LD += -m elf$(CONFIG_WORD_SIZE)ppc override CC += -m$(CONFIG_WORD_SIZE) override AR := GNUTARGET=elf$(CONFIG_WORD_SIZE)-powerpc $(AR) endif LDFLAGS_vmlinux-y := -Bstatic LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) := -pie LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y) LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name) ifeq ($(CONFIG_PPC64),y) ifeq ($(call cc-option-yn,-mcmodel=medium),y) # -mcmodel=medium breaks modules because it uses 32bit offsets from # the TOC pointer to create pointers where possible. Pointers into the # percpu data area are created by this method. # # The kernel module loader relocates the percpu data section from the # original location (starting with 0xd...) to somewhere in the base # kernel percpu data space (starting with 0xc...). We need a full # 64bit relocation for this to work, hence -mcmodel=large. KBUILD_CFLAGS_MODULE += -mcmodel=large else export NO_MINIMAL_TOC := -mno-minimal-toc endif endif CFLAGS-$(CONFIG_PPC64) := -mtraceback=no -mcall-aixdesc CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcmodel=medium,-mminimal-toc) CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mno-pointers-to-nested-functions) CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 -mmultiple CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power7,-mtune=power4) CFLAGS-$(CONFIG_CELL_CPU) += $(call cc-option,-mcpu=cell) CFLAGS-$(CONFIG_POWER4_CPU) += $(call cc-option,-mcpu=power4) CFLAGS-$(CONFIG_POWER5_CPU) += $(call cc-option,-mcpu=power5) CFLAGS-$(CONFIG_POWER6_CPU) += $(call cc-option,-mcpu=power6) CFLAGS-$(CONFIG_POWER7_CPU) += $(call cc-option,-mcpu=power7) CFLAGS-$(CONFIG_TUNE_CELL) += $(call cc-option,-mtune=cell) KBUILD_CPPFLAGS += -Iarch/$(ARCH) KBUILD_AFLAGS += -msoft-float -Iarch/$(ARCH) KBUILD_CFLAGS += -msoft-float -pipe -Iarch/$(ARCH) $(CFLAGS-y) CPP = $(CC) -E $(KBUILD_CFLAGS) CHECKFLAGS += -m$(CONFIG_WORD_SIZE) -D__powerpc__ -D__powerpc$(CONFIG_WORD_SIZE)__ KBUILD_LDFLAGS_MODULE += arch/powerpc/lib/crtsavres.o # No AltiVec or VSX instructions when building kernel KBUILD_CFLAGS += $(call cc-option,-mno-altivec) KBUILD_CFLAGS += $(call cc-option,-mno-vsx) # No SPE instruction when building kernel # (We use all available options to help semi-broken compilers) KBUILD_CFLAGS += $(call cc-option,-mno-spe) KBUILD_CFLAGS += $(call cc-option,-mspe=no) # Enable unit-at-a-time mode when possible. It shrinks the # kernel considerably. KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time) # FIXME: the module load should be taught about the additional relocs # generated by this. # revert to pre-gcc-4.4 behaviour of .eh_frame KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm) # Never use string load/store instructions as they are # often slow when they are implemented at all KBUILD_CFLAGS += -mno-string ifeq ($(CONFIG_DEBUG_CW),y) CFLAGS += -g2 -gdwarf-2 AFLAGS_KERNEL += -Wa,-gdwarf2 endif ifeq ($(CONFIG_6xx),y) KBUILD_CFLAGS += -mcpu=powerpc endif ifeq ($(CONFIG_E500),y) ifeq ($(CONFIG_64BIT),y) KBUILD_CFLAGS += -mcpu=e5500 KBUILD_AFLAGS += -mcpu=e5500 else ifeq ($(CONFIG_PPC_E500MC),y) KBUILD_CFLAGS += -mcpu=e500mc KBUILD_AFLAGS += -mcpu=e500mc else KBUILD_CFLAGS += -mcpu=8540 KBUILD_AFLAGS += -mcpu=8540 endif endif endif # Work around a gcc code-gen bug with -fno-omit-frame-pointer. ifeq ($(CONFIG_FUNCTION_TRACER),y) KBUILD_CFLAGS += -mno-sched-epilog endif cpu-as-$(CONFIG_4xx) += -Wa,-m405 cpu-as-$(CONFIG_ALTIVEC) += -Wa,-maltivec cpu-as-$(CONFIG_E200) += -Wa,-me200 KBUILD_AFLAGS += $(cpu-as-y) KBUILD_CFLAGS += $(cpu-as-y) head-y := arch/powerpc/kernel/head_$(CONFIG_WORD_SIZE).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 head-$(CONFIG_ALTIVEC) += arch/powerpc/kernel/vector.o core-y += arch/powerpc/kernel/ \ arch/powerpc/mm/ \ arch/powerpc/lib/ \ arch/powerpc/sysdev/ \ arch/powerpc/platforms/ \ arch/powerpc/math-emu/ \ arch/powerpc/net/ core-$(CONFIG_XMON) += arch/powerpc/xmon/ core-$(CONFIG_KVM) += arch/powerpc/kvm/ core-$(CONFIG_PERF_EVENTS) += arch/powerpc/perf/ drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/ libs-y += $(LIBGCC) # Default to zImage, override when needed all: zImage # With make 3.82 we cannot mix normal and wildcard targets BOOT_TARGETS1 := zImage zImage.initrd uImage BOOT_TARGETS2 := zImage% dtbImage% treeImage.% cuImage.% simpleImage.% uImage.% PHONY += $(BOOT_TARGETS1) $(BOOT_TARGETS2) boot := arch/$(ARCH)/boot ifeq ($(CONFIG_RELOCATABLE),y) quiet_cmd_relocs_check = CALL $< cmd_relocs_check = perl $< "$(OBJDUMP)" "$(obj)/vmlinux" PHONY += relocs_check relocs_check: arch/powerpc/relocs_check.pl vmlinux $(call cmd,relocs_check) zImage: relocs_check endif $(BOOT_TARGETS1): vmlinux $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) $(BOOT_TARGETS2): vmlinux $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) bootwrapper_install: $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) %.dtb: scripts $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) define archhelp @echo '* zImage - Build default images selected by kernel config' @echo ' zImage.* - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)' @echo ' uImage - U-Boot native image format' @echo ' cuImage.