1# This file is included by the global makefile so that you can add your own 2# architecture-specific flags and dependencies. Remember to do have actions 3# for "archclean" and "archdep" for cleaning up and making dependencies for 4# this architecture. 5# 6# This file is subject to the terms and conditions of the GNU General Public 7# License. See the file "COPYING" in the main directory of this archive 8# for more details. 9# 10# Copyright (C) 1994 by Linus Torvalds 11# Changes for PPC by Gary Thomas 12# Rewritten by Cort Dougan and Paul Mackerras 13# 14 15HAS_BIARCH := $(call cc-option-yn, -m32) 16 17# Set default 32 bits cross compilers for vdso and boot wrapper 18CROSS32_COMPILE ?= 19 20CROSS32CC := $(CROSS32_COMPILE)gcc 21CROSS32AS := $(CROSS32_COMPILE)as 22CROSS32LD := $(CROSS32_COMPILE)ld 23CROSS32OBJCOPY := $(CROSS32_COMPILE)objcopy 24 25ifeq ($(HAS_BIARCH),y) 26ifeq ($(CROSS32_COMPILE),) 27CROSS32CC := $(CC) -m32 28CROSS32AS := $(AS) -a32 29CROSS32LD := $(LD) -m elf32ppc 30CROSS32OBJCOPY := $(OBJCOPY) 31endif 32endif 33 34export CROSS32CC CROSS32AS CROSS32LD CROSS32OBJCOPY 35 36ifeq ($(CONFIG_PPC64),y) 37OLDARCH := ppc64 38SZ := 64 39 40new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi) 41 42ifeq ($(new_nm),y) 43NM := $(NM) --synthetic 44endif 45 46else 47OLDARCH := ppc 48SZ := 32 49endif 50 51UTS_MACHINE := $(OLDARCH) 52 53ifeq ($(HAS_BIARCH),y) 54override AS += -a$(SZ) 55override LD += -m elf$(SZ)ppc 56override CC += -m$(SZ) 57endif 58 59LDFLAGS_vmlinux := -Bstatic 60 61# The -Iarch/$(ARCH)/include is temporary while we are merging 62CPPFLAGS += -Iarch/$(ARCH) -Iarch/$(ARCH)/include 63AFLAGS += -Iarch/$(ARCH) 64CFLAGS += -Iarch/$(ARCH) -msoft-float -pipe 65CFLAGS-$(CONFIG_PPC64) := -mminimal-toc -mtraceback=none -mcall-aixdesc 66CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 -mmultiple 67CFLAGS += $(CFLAGS-y) 68CPP = $(CC) -E $(CFLAGS) 69# Temporary hack until we have migrated to asm-powerpc 70LINUXINCLUDE += -Iarch/$(ARCH)/include 71 72CHECKFLAGS += -m$(SZ) -D__powerpc__ -D__powerpc$(SZ)__ 73 74ifeq ($(CONFIG_PPC64),y) 75GCC_VERSION := $(call cc-version) 76GCC_BROKEN_VEC := $(shell if [ $(GCC_VERSION) -lt 0400 ] ; then echo "y"; fi) 77 78ifeq ($(CONFIG_POWER4_ONLY),y) 79ifeq ($(CONFIG_ALTIVEC),y) 80ifeq ($(GCC_BROKEN_VEC),y) 81 CFLAGS += $(call cc-option,-mcpu=970) 82else 83 CFLAGS += $(call cc-option,-mcpu=power4) 84endif 85else 86 CFLAGS += $(call cc-option,-mcpu=power4) 87endif 88else 89 CFLAGS += $(call cc-option,-mtune=power4) 90endif 91endif 92 93# No AltiVec instruction when building kernel 94CFLAGS += $(call cc-option,-mno-altivec) 95 96# Enable unit-at-a-time mode when possible. It shrinks the 97# kernel considerably. 98CFLAGS += $(call cc-option,-funit-at-a-time) 99 100ifndef CONFIG_FSL_BOOKE 101CFLAGS += -mstring 102endif 103 104cpu-as-$(CONFIG_PPC64BRIDGE) += -Wa,-mppc64bridge 105cpu-as-$(CONFIG_4xx) += -Wa,-m405 106cpu-as-$(CONFIG_6xx) += -Wa,-maltivec 107cpu-as-$(CONFIG_POWER4) += -Wa,-maltivec 108cpu-as-$(CONFIG_E500) += -Wa,-me500 109cpu-as-$(CONFIG_E200) += -Wa,-me200 110 111AFLAGS += $(cpu-as-y) 112CFLAGS += $(cpu-as-y) 113 114# Default to the common case. 115KBUILD_DEFCONFIG := common_defconfig 116 117head-y := arch/powerpc/kernel/head_32.o 118head-$(CONFIG_PPC64) := arch/powerpc/kernel/head_64.o 119head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o 120head-$(CONFIG_4xx) := arch/powerpc/kernel/head_4xx.o 121head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o 122head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o 123 124head-$(CONFIG_PPC64) += arch/powerpc/kernel/entry_64.o 125head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o 126 127core-y += arch/powerpc/kernel/ \ 128 arch/powerpc/mm/ \ 129 arch/powerpc/lib/ \ 130 arch/powerpc/sysdev/ \ 131 arch/powerpc/platforms/ 132core-$(CONFIG_PPC32) += arch/ppc/kernel/ 133core-$(CONFIG_MATH_EMULATION) += arch/ppc/math-emu/ 134core-$(CONFIG_XMON) += arch/powerpc/xmon/ 135core-$(CONFIG_APUS) += arch/ppc/amiga/ 136drivers-$(CONFIG_8xx) += arch/ppc/8xx_io/ 137drivers-$(CONFIG_4xx) += arch/ppc/4xx_io/ 138drivers-$(CONFIG_CPM2) += arch/ppc/8260_io/ 139 140drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/ 141 142defaultimage-$(CONFIG_PPC32) := zImage 143defaultimage-$(CONFIG_PPC_ISERIES) := vmlinux 144defaultimage-$(CONFIG_PPC_PSERIES) := zImage 145KBUILD_IMAGE := $(defaultimage-y) 146all: $(KBUILD_IMAGE) 147 148CPPFLAGS_vmlinux.lds := -Upowerpc 149 150# All the instructions talk about "make bzImage". 151bzImage: zImage 152 153BOOT_TARGETS = zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm 154 155.PHONY: $(BOOT_TARGETS) 156 157boot := arch/$(ARCH)/boot 158 159$(BOOT_TARGETS): vmlinux 160 $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) 161 162define archhelp 163 @echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)' 164 @echo ' install - Install kernel using' 165 @echo ' (your) ~/bin/installkernel or' 166 @echo ' (distribution) /sbin/installkernel or' 167 @echo ' install to $$(INSTALL_PATH) and run lilo' 168 @echo ' *_defconfig - Select default config from arch/$(ARCH)/configs' 169endef 170 171archclean: 172 $(Q)$(MAKE) $(clean)=$(boot) 173 $(Q)rm -rf arch/$(ARCH)/include 174 175archprepare: checkbin 176 177# Temporary hack until we have migrated to asm-powerpc 178include/asm: arch/$(ARCH)/include/asm 179arch/$(ARCH)/include/asm: FORCE 180 $(Q)if [ ! -d arch/$(ARCH)/include ]; then mkdir -p arch/$(ARCH)/include; fi 181 $(Q)ln -fsn $(srctree)/include/asm-$(OLDARCH) arch/$(ARCH)/include/asm 182 183# Use the file '.tmp_gas_check' for binutils tests, as gas won't output 184# to stdout and these checks are run even on install targets. 185TOUT := .tmp_gas_check 186# Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec 187# instructions. 188# gcc-3.4 and binutils-2.14 are a fatal combination. 189GCC_VERSION := $(call cc-version) 190 191checkbin: 192 @if test "$(GCC_VERSION)" = "0304" ; then \ 193 if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \ 194 echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \ 195 echo 'correctly with gcc-3.4 and your version of binutils.'; \ 196 echo '*** Please upgrade your binutils or downgrade your gcc'; \ 197 false; \ 198 fi ; \ 199 fi 200 @if ! /bin/echo dssall | $(AS) -many -o $(TOUT) >/dev/null 2>&1 ; then \ 201 echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \ 202 echo 'correctly with old versions of binutils.' ; \ 203 echo '*** Please upgrade your binutils to 2.12.1 or newer' ; \ 204 false ; \ 205 fi 206 207CLEAN_FILES += $(TOUT) 208 209