1# This file is included by the global makefile so that you can add your own 2# architecture-specific flags and dependencies. 3# 4# This file is subject to the terms and conditions of the GNU General Public 5# License. See the file "COPYING" in the main directory of this archive 6# for more details. 7# 8# Copyright (C) 1994 by Linus Torvalds 9# Changes for PPC by Gary Thomas 10# Rewritten by Cort Dougan and Paul Mackerras 11# 12 13# This must match PAGE_OFFSET in include/asm-ppc/page.h. 14KERNELLOAD := $(CONFIG_KERNEL_START) 15 16HAS_BIARCH := $(call cc-option-yn, -m32) 17ifeq ($(HAS_BIARCH),y) 18AS := $(AS) -a32 19LD := $(LD) -m elf32ppc 20CC := $(CC) -m32 21endif 22 23LDFLAGS_vmlinux := -Ttext $(KERNELLOAD) -Bstatic 24# The -Iarch/$(ARCH)/include is temporary while we are merging 25CPPFLAGS += -Iarch/$(ARCH) -Iarch/$(ARCH)/include 26AFLAGS += -Iarch/$(ARCH) 27CFLAGS += -Iarch/$(ARCH) -msoft-float -pipe \ 28 -ffixed-r2 -mmultiple 29 30# No AltiVec instruction when building kernel 31CFLAGS += $(call cc-option, -mno-altivec) 32 33CPP = $(CC) -E $(CFLAGS) 34# Temporary hack until we have migrated to asm-powerpc 35LINUXINCLUDE += -Iarch/$(ARCH)/include 36 37CHECKFLAGS += -D__powerpc__ 38 39ifndef CONFIG_FSL_BOOKE 40CFLAGS += -mstring 41endif 42 43cpu-as-$(CONFIG_4xx) += -Wa,-m405 44cpu-as-$(CONFIG_6xx) += -Wa,-maltivec 45cpu-as-$(CONFIG_E500) += -Wa,-me500 46cpu-as-$(CONFIG_E200) += -Wa,-me200 47 48AFLAGS += $(cpu-as-y) 49CFLAGS += $(cpu-as-y) 50 51# Default to the common case. 52KBUILD_DEFCONFIG := common_defconfig 53 54head-y := arch/ppc/kernel/head.o 55head-$(CONFIG_8xx) := arch/ppc/kernel/head_8xx.o 56head-$(CONFIG_4xx) := arch/ppc/kernel/head_4xx.o 57head-$(CONFIG_44x) := arch/ppc/kernel/head_44x.o 58head-$(CONFIG_FSL_BOOKE) := arch/ppc/kernel/head_fsl_booke.o 59 60head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o 61 62core-y += arch/ppc/kernel/ arch/powerpc/kernel/ \ 63 arch/ppc/platforms/ \ 64 arch/ppc/mm/ arch/ppc/lib/ \ 65 arch/ppc/syslib/ arch/powerpc/sysdev/ \ 66 arch/powerpc/lib/ 67core-$(CONFIG_4xx) += arch/ppc/platforms/4xx/ 68core-$(CONFIG_83xx) += arch/ppc/platforms/83xx/ 69core-$(CONFIG_85xx) += arch/ppc/platforms/85xx/ 70core-$(CONFIG_MATH_EMULATION) += arch/powerpc/math-emu/ 71core-$(CONFIG_XMON) += arch/ppc/xmon/ 72core-$(CONFIG_APUS) += arch/ppc/amiga/ 73drivers-$(CONFIG_8xx) += arch/ppc/8xx_io/ 74drivers-$(CONFIG_4xx) += arch/ppc/4xx_io/ 75drivers-$(CONFIG_CPM2) += arch/ppc/8260_io/ 76 77drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/ 78 79BOOT_TARGETS = zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm 80 81PHONY += $(BOOT_TARGETS) 82 83all: uImage zImage 84 85CPPFLAGS_vmlinux.lds := -Upowerpc 86 87# All the instructions talk about "make bzImage". 88bzImage: zImage 89 90boot := arch/$(ARCH)/boot 91 92$(BOOT_TARGETS): vmlinux 93 $(Q)$(MAKE) $(build)=$(boot) $@ 94 95uImage: vmlinux 96 $(Q)$(MAKE) $(build)=$(boot)/images $(boot)/images/$@ 97 98define archhelp 99 @echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/images/zImage.*)' 100 @echo ' uImage - Create a bootable image for U-Boot / PPCBoot' 101 @echo ' install - Install kernel using' 102 @echo ' (your) ~/bin/installkernel or' 103 @echo ' (distribution) /sbin/installkernel or' 104 @echo ' install to $$(INSTALL_PATH) and run lilo' 105 @echo ' *_defconfig - Select default config from arch/$(ARCH)/ppc/configs' 106endef 107 108archclean: 109 $(Q)$(MAKE) $(clean)=arch/ppc/boot 110 # Temporary hack until we have migrated to asm-powerpc 111 $(Q)rm -rf arch/$(ARCH)/include 112 113archprepare: checkbin 114 115# Temporary hack until we have migrated to asm-powerpc 116include/asm: arch/$(ARCH)/include/asm 117arch/$(ARCH)/include/asm: 118 $(Q)if [ ! -d arch/$(ARCH)/include ]; then mkdir -p arch/$(ARCH)/include; fi 119 $(Q)ln -fsn $(srctree)/include/asm-powerpc arch/$(ARCH)/include/asm 120 121# Use the file '.tmp_gas_check' for binutils tests, as gas won't output 122# to stdout and these checks are run even on install targets. 123TOUT := .tmp_gas_check 124# Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec 125# instructions. 126# gcc-3.4 and binutils-2.14 are a fatal combination. 127 128checkbin: 129 @if test "$(call cc-version)" = "0304" ; then \ 130 if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \ 131 echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \ 132 echo 'correctly with gcc-3.4 and your version of binutils.'; \ 133 echo '*** Please upgrade your binutils or downgrade your gcc'; \ 134 false; \ 135 fi ; \ 136 fi 137 @if ! /bin/echo dssall | $(AS) -many -o $(TOUT) >/dev/null 2>&1 ; then \ 138 echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \ 139 echo 'correctly with old versions of binutils.' ; \ 140 echo '*** Please upgrade your binutils to 2.12.1 or newer' ; \ 141 false ; \ 142 fi 143 144CLEAN_FILES += $(TOUT) 145