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 15# This must match PAGE_OFFSET in include/asm-powerpc/page.h. 16KERNELLOAD := $(CONFIG_KERNEL_START) 17 18HAS_BIARCH := $(call cc-option-yn, -m32) 19 20ifeq ($(CONFIG_PPC64),y) 21OLDARCH := ppc64 22SZ := 64 23 24# Set default 32 bits cross compilers for vdso and boot wrapper 25CROSS32_COMPILE ?= 26 27CROSS32CC := $(CROSS32_COMPILE)gcc 28CROSS32AS := $(CROSS32_COMPILE)as 29CROSS32LD := $(CROSS32_COMPILE)ld 30CROSS32OBJCOPY := $(CROSS32_COMPILE)objcopy 31 32ifeq ($(HAS_BIARCH),y) 33ifeq ($(CROSS32_COMPILE),) 34CROSS32CC := $(CC) -m32 35CROSS32AS := $(AS) -a32 36CROSS32LD := $(LD) -m elf32ppc 37CROSS32OBJCOPY := $(OBJCOPY) 38endif 39endif 40 41export CROSS32CC CROSS32AS CROSS32LD CROSS32OBJCOPY 42 43new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi) 44 45ifeq ($(new_nm),y) 46NM := $(NM) --synthetic 47endif 48 49else 50OLDARCH := ppc 51SZ := 32 52endif 53 54ifeq ($(HAS_BIARCH),y) 55override AS += -a$(SZ) 56override LD += -m elf$(SZ)ppc 57override CC += -m$(SZ) 58endif 59 60LDFLAGS_vmlinux := -Ttext $(KERNELLOAD) -Bstatic -e $(KERNELLOAD) 61 62# The -Iarch/$(ARCH)/include is temporary while we are merging 63CPPFLAGS += -Iarch/$(ARCH) -Iarch/$(ARCH)/include 64AFLAGS += -Iarch/$(ARCH) 65CFLAGS += -Iarch/$(ARCH) -msoft-float -pipe 66CFLAGS-$(CONFIG_PPC64) := -mminimal-toc -mtraceback=none -mcall-aixdesc 67CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 -mmultiple 68CFLAGS += $(CFLAGS-y) 69CPP = $(CC) -E $(CFLAGS) 70# Temporary hack until we have migrated to asm-powerpc 71LINUXINCLUDE += -Iarch/$(ARCH)/include 72 73CHECKFLAGS += -m$(SZ) -D__powerpc__ -D__powerpc$(SZ)__ 74 75ifeq ($(CONFIG_PPC64),y) 76GCC_VERSION := $(call cc-version) 77GCC_BROKEN_VEC := $(shell if [ $(GCC_VERSION) -lt 0400 ] ; then echo "y"; fi) 78 79ifeq ($(CONFIG_POWER4_ONLY),y) 80ifeq ($(CONFIG_ALTIVEC),y) 81ifeq ($(GCC_BROKEN_VEC),y) 82 CFLAGS += $(call cc-option,-mcpu=970) 83else 84 CFLAGS += $(call cc-option,-mcpu=power4) 85endif 86else 87 CFLAGS += $(call cc-option,-mcpu=power4) 88endif 89else 90 CFLAGS += $(call cc-option,-mtune=power4) 91endif 92endif 93 94# Enable unit-at-a-time mode when possible. It shrinks the 95# kernel considerably. 96CFLAGS += $(call cc-option,-funit-at-a-time) 97 98ifndef CONFIG_FSL_BOOKE 99CFLAGS += -mstring 100endif 101 102cpu-as-$(CONFIG_PPC64BRIDGE) += -Wa,-mppc64bridge 103cpu-as-$(CONFIG_4xx) += -Wa,-m405 104cpu-as-$(CONFIG_6xx) += -Wa,-maltivec 105cpu-as-$(CONFIG_POWER4) += -Wa,-maltivec 106cpu-as-$(CONFIG_E500) += -Wa,-me500 107cpu-as-$(CONFIG_E200) += -Wa,-me200 108 109AFLAGS += $(cpu-as-y) 110CFLAGS += $(cpu-as-y) 111 112# Default to the common case. 113KBUILD_DEFCONFIG := common_defconfig 114 115head-y := arch/powerpc/kernel/head.o 116head-$(CONFIG_PPC64) := arch/powerpc/kernel/head_64.o 117head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o 118head-$(CONFIG_4xx) := arch/powerpc/kernel/head_4xx.o 119head-$(CONFIG_44x) := arch/powerpc/kernel/head_44x.o 120head-$(CONFIG_FSL_BOOKE) := arch/powerpc/kernel/head_fsl_booke.o 121 122ifeq ($(CONFIG_PPC32),y) 123head-$(CONFIG_6xx) += arch/powerpc/kernel/idle_6xx.o 124head-$(CONFIG_PPC_FPU) += arch/powerpc/kernel/fpu.o 125endif 126 127core-y += arch/powerpc/kernel/ \ 128 arch/$(OLDARCH)/kernel/ \ 129 arch/powerpc/mm/ \ 130 arch/powerpc/lib/ \ 131 arch/powerpc/sysdev/ \ 132 arch/powerpc/platforms/ 133core-$(CONFIG_PPC32) += arch/ppc/syslib/ 134core-$(CONFIG_MATH_EMULATION) += arch/ppc/math-emu/ 135core-$(CONFIG_XMON) += arch/powerpc/xmon/ 136core-$(CONFIG_APUS) += arch/ppc/amiga/ 137drivers-$(CONFIG_8xx) += arch/ppc/8xx_io/ 138drivers-$(CONFIG_4xx) += arch/ppc/4xx_io/ 139drivers-$(CONFIG_CPM2) += arch/ppc/8260_io/ 140 141drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/ 142 143BOOT_TARGETS = zImage zImage.initrd znetboot znetboot.initrd vmlinux.sm 144 145.PHONY: $(BOOT_TARGETS) 146 147all: uImage zImage 148 149CPPFLAGS_vmlinux.lds := -Upowerpc 150 151# All the instructions talk about "make bzImage". 152bzImage: zImage 153 154boot := arch/$(OLDARCH)/boot 155 156$(BOOT_TARGETS): vmlinux 157 $(Q)$(MAKE) ARCH=$(OLDARCH) $(build)=$(boot) $@ 158 159uImage: vmlinux 160 $(Q)$(MAKE) ARCH=$(OLDARCH) $(build)=$(boot)/images $(boot)/images/$@ 161 162define archhelp 163 @echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/images/zImage.*)' 164 @echo ' uImage - Create a bootable image for U-Boot / PPCBoot' 165 @echo ' install - Install kernel using' 166 @echo ' (your) ~/bin/installkernel or' 167 @echo ' (distribution) /sbin/installkernel or' 168 @echo ' install to $$(INSTALL_PATH) and run lilo' 169 @echo ' *_defconfig - Select default config from arch/$(ARCH)/ppc/configs' 170endef 171 172archclean: 173 $(Q)$(MAKE) $(clean)=$(boot) 174 # Temporary hack until we have migrated to asm-powerpc 175 $(Q)rm -rf arch/$(ARCH)/include 176 177archprepare: checkbin 178 179# Temporary hack until we have migrated to asm-powerpc 180include/asm: arch/$(ARCH)/include/asm 181arch/$(ARCH)/include/asm: 182 $(Q)if [ ! -d arch/$(ARCH)/include ]; then mkdir -p arch/$(ARCH)/include; fi 183 $(Q)ln -fsn $(srctree)/include/asm-$(OLDARCH) arch/$(ARCH)/include/asm 184 185# Use the file '.tmp_gas_check' for binutils tests, as gas won't output 186# to stdout and these checks are run even on install targets. 187TOUT := .tmp_gas_check 188# Ensure this is binutils 2.12.1 (or 2.12.90.0.7) or later for altivec 189# instructions. 190# gcc-3.4 and binutils-2.14 are a fatal combination. 191GCC_VERSION := $(call cc-version) 192 193checkbin: 194 @if test "$(GCC_VERSION)" = "0304" ; then \ 195 if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \ 196 echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \ 197 echo 'correctly with gcc-3.4 and your version of binutils.'; \ 198 echo '*** Please upgrade your binutils or downgrade your gcc'; \ 199 false; \ 200 fi ; \ 201 fi 202 @if ! /bin/echo dssall | $(AS) -many -o $(TOUT) >/dev/null 2>&1 ; then \ 203 echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build ' ; \ 204 echo 'correctly with old versions of binutils.' ; \ 205 echo '*** Please upgrade your binutils to 2.12.1 or newer' ; \ 206 false ; \ 207 fi 208 209CLEAN_FILES += $(TOUT) 210 211