1# 2# arch/arm/Makefile 3# 4# This file is included by the global makefile so that you can add your own 5# architecture-specific flags and dependencies. 6# 7# This file is subject to the terms and conditions of the GNU General Public 8# License. See the file "COPYING" in the main directory of this archive 9# for more details. 10# 11# Copyright (C) 1995-2001 by Russell King 12 13LDFLAGS_vmlinux := --no-undefined -X --pic-veneer 14ifeq ($(CONFIG_CPU_ENDIAN_BE8),y) 15LDFLAGS_vmlinux += --be8 16KBUILD_LDFLAGS_MODULE += --be8 17endif 18 19GZFLAGS :=-9 20#KBUILD_CFLAGS +=-pipe 21 22# Never generate .eh_frame 23KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm) 24 25# This should work on most of the modern platforms 26KBUILD_DEFCONFIG := multi_v7_defconfig 27 28# defines filename extension depending memory management type. 29ifeq ($(CONFIG_MMU),) 30MMUEXT := -nommu 31KBUILD_CFLAGS += $(call cc-option,-mno-unaligned-access) 32endif 33 34ifeq ($(CONFIG_FRAME_POINTER),y) 35KBUILD_CFLAGS +=-fno-omit-frame-pointer 36ifeq ($(CONFIG_CC_IS_GCC),y) 37KBUILD_CFLAGS += -mapcs -mno-sched-prolog 38endif 39endif 40 41ifeq ($(CONFIG_CPU_BIG_ENDIAN),y) 42KBUILD_CPPFLAGS += -mbig-endian 43CHECKFLAGS += -D__ARMEB__ 44KBUILD_LDFLAGS += -EB 45else 46KBUILD_CPPFLAGS += -mlittle-endian 47CHECKFLAGS += -D__ARMEL__ 48KBUILD_LDFLAGS += -EL 49endif 50 51ifeq ($(CONFIG_RELOCATABLE),y) 52KBUILD_CFLAGS += -fpic -include $(srctree)/include/linux/hidden.h 53CFLAGS_MODULE += -fno-pic 54LDFLAGS_vmlinux += -pie -shared -Bsymbolic 55endif 56 57# 58# The Scalar Replacement of Aggregates (SRA) optimization pass in GCC 4.9 and 59# later may result in code being generated that handles signed short and signed 60# char struct members incorrectly. So disable it. 61# (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65932) 62# 63KBUILD_CFLAGS += $(call cc-option,-fno-ipa-sra) 64 65# This selects which instruction set is used. 66# Note that GCC does not numerically define an architecture version 67# macro, but instead defines a whole series of macros which makes 68# testing for a specific architecture or later rather impossible. 69arch-$(CONFIG_CPU_32v7M) =-D__LINUX_ARM_ARCH__=7 -march=armv7-m 70arch-$(CONFIG_CPU_32v7) =-D__LINUX_ARM_ARCH__=7 -march=armv7-a 71arch-$(CONFIG_CPU_32v6) =-D__LINUX_ARM_ARCH__=6 -march=armv6 72# Only override the compiler option if ARMv6. The ARMv6K extensions are 73# always available in ARMv7 74ifeq ($(CONFIG_CPU_32v6),y) 75arch-$(CONFIG_CPU_32v6K) =-D__LINUX_ARM_ARCH__=6 -march=armv6k 76endif 77arch-$(CONFIG_CPU_32v5) =-D__LINUX_ARM_ARCH__=5 -march=armv5te 78arch-$(CONFIG_CPU_32v4T) =-D__LINUX_ARM_ARCH__=4 -march=armv4t 79arch-$(CONFIG_CPU_32v4) =-D__LINUX_ARM_ARCH__=4 -march=armv4 80arch-$(CONFIG_CPU_32v3) =-D__LINUX_ARM_ARCH__=3 -march=armv3m 81 82# Evaluate arch cc-option calls now 83arch-y := $(arch-y) 84 85# This selects how we optimise for the processor. 86tune-$(CONFIG_CPU_ARM7TDMI) =-mtune=arm7tdmi 87tune-$(CONFIG_CPU_ARM720T) =-mtune=arm7tdmi 88tune-$(CONFIG_CPU_ARM740T) =-mtune=arm7tdmi 89tune-$(CONFIG_CPU_ARM9TDMI) =-mtune=arm9tdmi 90tune-$(CONFIG_CPU_ARM940T) =-mtune=arm9tdmi 91tune-$(CONFIG_CPU_ARM946E) =-mtune=arm9e 92tune-$(CONFIG_CPU_ARM920T) =-mtune=arm9tdmi 93tune-$(CONFIG_CPU_ARM922T) =-mtune=arm9tdmi 94tune-$(CONFIG_CPU_ARM925T) =-mtune=arm9tdmi 95tune-$(CONFIG_CPU_ARM926T) =-mtune=arm9tdmi 96tune-$(CONFIG_CPU_FA526) =-mtune=arm9tdmi 97tune-$(CONFIG_CPU_SA110) =-mtune=strongarm110 98tune-$(CONFIG_CPU_SA1100) =-mtune=strongarm1100 99tune-$(CONFIG_CPU_XSCALE) =-mtune=xscale 100tune-$(CONFIG_CPU_XSC3) =-mtune=xscale 101tune-$(CONFIG_CPU_FEROCEON) =-mtune=xscale 102tune-$(CONFIG_CPU_V6) =-mtune=arm1136j-s 103tune-$(CONFIG_CPU_V6K) =-mtune=arm1136j-s 104 105# Evaluate tune cc-option calls now 106tune-y := $(tune-y) 107 108ifeq ($(CONFIG_AEABI),y) 109CFLAGS_ABI :=-mabi=aapcs-linux -mfpu=vfp 110else 111CFLAGS_ABI :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,) 112endif 113 114ifeq ($(CONFIG_ARM_UNWIND),y) 115CFLAGS_ABI +=-funwind-tables 116endif 117 118ifeq ($(CONFIG_CC_IS_CLANG),y) 119CFLAGS_ABI += -meabi gnu 120endif 121 122# Accept old syntax despite ".syntax unified" 123AFLAGS_NOWARN :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W) 124 125ifeq ($(CONFIG_THUMB2_KERNEL),y) 126CFLAGS_ISA :=-mthumb -Wa,-mimplicit-it=always $(AFLAGS_NOWARN) 127AFLAGS_ISA :=$(CFLAGS_ISA) -Wa$(comma)-mthumb 128else 129CFLAGS_ISA :=$(call cc-option,-marm,) $(AFLAGS_NOWARN) 130AFLAGS_ISA :=$(CFLAGS_ISA) 131endif 132 133# Need -Uarm for gcc < 3.x 134KBUILD_CFLAGS +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm 135KBUILD_AFLAGS +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float 136 137CHECKFLAGS += -D__arm__ 138 139#Default value 140head-y := arch/arm/kernel/head$(MMUEXT).o 141 142# Text offset. This list is sorted numerically by address in order to 143# provide a means to avoid/resolve conflicts in multi-arch kernels. 144# Note: the 32kB below this value is reserved for use by the kernel 145# during boot, and this offset is critical to the functioning of 146# kexec-tools. 147textofs-y := 0x00008000 148# We don't want the htc bootloader to corrupt kernel during resume 149textofs-$(CONFIG_PM_H1940) := 0x00108000 150# RTD1195 has Boot ROM at start of address space 151textofs-$(CONFIG_ARCH_REALTEK) := 0x00108000 152# SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory 153ifeq ($(CONFIG_ARCH_SA1100),y) 154textofs-$(CONFIG_SA1111) := 0x00208000 155endif 156textofs-$(CONFIG_ARCH_IPQ40XX) := 0x00208000 157textofs-$(CONFIG_ARCH_MSM8X60) := 0x00208000 158textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000 159textofs-$(CONFIG_ARCH_MESON) := 0x00208000 160textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000 161 162# Machine directory name. This list is sorted alphanumerically 163# by CONFIG_* macro name. 164machine-$(CONFIG_ARCH_ACTIONS) += actions 165machine-$(CONFIG_ARCH_ALPINE) += alpine 166machine-$(CONFIG_ARCH_ARTPEC) += artpec 167machine-$(CONFIG_ARCH_ASPEED) += aspeed 168machine-$(CONFIG_ARCH_AT91) += at91 169machine-$(CONFIG_ARCH_AXXIA) += axxia 170machine-$(CONFIG_ARCH_BCM) += bcm 171machine-$(CONFIG_ARCH_BERLIN) += berlin 172machine-$(CONFIG_ARCH_CLPS711X) += clps711x 173machine-$(CONFIG_ARCH_CNS3XXX) += cns3xxx 174machine-$(CONFIG_ARCH_DAVINCI) += davinci 175machine-$(CONFIG_ARCH_DIGICOLOR) += digicolor 176machine-$(CONFIG_ARCH_DOVE) += dove 177machine-$(CONFIG_ARCH_EBSA110) += ebsa110 178machine-$(CONFIG_ARCH_EFM32) += efm32 179machine-$(CONFIG_ARCH_EP93XX) += ep93xx 180machine-$(CONFIG_ARCH_EXYNOS) += exynos 181machine-$(CONFIG_ARCH_FOOTBRIDGE) += footbridge 182machine-$(CONFIG_ARCH_GEMINI) += gemini 183machine-$(CONFIG_ARCH_HIGHBANK) += highbank 184machine-$(CONFIG_ARCH_HISI) += hisi 185machine-$(CONFIG_ARCH_INTEGRATOR) += integrator 186machine-$(CONFIG_ARCH_IOP32X) += iop32x 187machine-$(CONFIG_ARCH_IXP4XX) += ixp4xx 188machine-$(CONFIG_ARCH_KEYSTONE) += keystone 189machine-$(CONFIG_ARCH_LPC18XX) += lpc18xx 190machine-$(CONFIG_ARCH_LPC32XX) += lpc32xx 191machine-$(CONFIG_ARCH_MESON) += meson 192machine-$(CONFIG_ARCH_MMP) += mmp 193machine-$(CONFIG_ARCH_MPS2) += vexpress 194machine-$(CONFIG_ARCH_MOXART) += moxart 195machine-$(CONFIG_ARCH_MV78XX0) += mv78xx0 196machine-$(CONFIG_ARCH_MVEBU) += mvebu 197machine-$(CONFIG_ARCH_MXC) += imx 198machine-$(CONFIG_ARCH_MEDIATEK) += mediatek 199machine-$(CONFIG_ARCH_MILBEAUT) += milbeaut 200machine-$(CONFIG_ARCH_MXS) += mxs 201machine-$(CONFIG_ARCH_MSTARV7) += mstar 202machine-$(CONFIG_ARCH_NOMADIK) += nomadik 203machine-$(CONFIG_ARCH_NPCM) += npcm 204machine-$(CONFIG_ARCH_NSPIRE) += nspire 205machine-$(CONFIG_ARCH_OXNAS) += oxnas 206machine-$(CONFIG_ARCH_OMAP1) += omap1 207machine-$(CONFIG_ARCH_OMAP2PLUS) += omap2 208machine-$(CONFIG_ARCH_ORION5X) += orion5x 209machine-$(CONFIG_ARCH_PICOXCELL) += picoxcell 210machine-$(CONFIG_ARCH_PXA) += pxa 211machine-$(CONFIG_ARCH_QCOM) += qcom 212machine-$(CONFIG_ARCH_RDA) += rda 213machine-$(CONFIG_ARCH_REALTEK) += realtek 214machine-$(CONFIG_ARCH_REALVIEW) += realview 215machine-$(CONFIG_ARCH_ROCKCHIP) += rockchip 216machine-$(CONFIG_ARCH_RPC) += rpc 217machine-$(CONFIG_PLAT_SAMSUNG) += s3c 218machine-$(CONFIG_ARCH_S5PV210) += s5pv210 219machine-$(CONFIG_ARCH_SA1100) += sa1100 220machine-$(CONFIG_ARCH_RENESAS) += shmobile 221machine-$(CONFIG_ARCH_SIRF) += prima2 222machine-$(CONFIG_ARCH_SOCFPGA) += socfpga 223machine-$(CONFIG_ARCH_STI) += sti 224machine-$(CONFIG_ARCH_STM32) += stm32 225machine-$(CONFIG_ARCH_SUNXI) += sunxi 226machine-$(CONFIG_ARCH_TANGO) += tango 227machine-$(CONFIG_ARCH_TEGRA) += tegra 228machine-$(CONFIG_ARCH_U300) += u300 229machine-$(CONFIG_ARCH_U8500) += ux500 230machine-$(CONFIG_ARCH_VERSATILE) += versatile 231machine-$(CONFIG_ARCH_VEXPRESS) += vexpress 232machine-$(CONFIG_ARCH_VT8500) += vt8500 233machine-$(CONFIG_ARCH_ZX) += zx 234machine-$(CONFIG_ARCH_ZYNQ) += zynq 235machine-$(CONFIG_PLAT_SPEAR) += spear 236 237# Platform directory name. This list is sorted alphanumerically 238# by CONFIG_* macro name. 239plat-$(CONFIG_ARCH_OMAP) += omap 240plat-$(CONFIG_PLAT_ORION) += orion 241plat-$(CONFIG_PLAT_PXA) += pxa 242plat-$(CONFIG_PLAT_VERSATILE) += versatile 243 244ifeq ($(CONFIG_ARCH_EBSA110),y) 245# This is what happens if you forget the IOCS16 line. 246# PCMCIA cards stop working. 247CFLAGS_3c589_cs.o :=-DISA_SIXTEEN_BIT_PERIPHERAL 248export CFLAGS_3c589_cs.o 249endif 250 251# The byte offset of the kernel image in RAM from the start of RAM. 252TEXT_OFFSET := $(textofs-y) 253 254# The first directory contains additional information for the boot setup code 255ifneq ($(machine-y),) 256MACHINE := arch/arm/mach-$(word 1,$(machine-y))/ 257else 258MACHINE := 259endif 260ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y) 261MACHINE := 262endif 263 264machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y)) 265platdirs := $(patsubst %,arch/arm/plat-%/,$(sort $(plat-y))) 266 267ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y) 268ifneq ($(CONFIG_ARM_SINGLE_ARMV7M),y) 269KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs)) 270endif 271endif 272 273export TEXT_OFFSET GZFLAGS MMUEXT 274 275core-y += arch/arm/ 276# If we have a machine-specific directory, then include it in the build. 277core-y += $(machdirs) $(platdirs) 278 279# For cleaning 280core- += $(patsubst %,arch/arm/mach-%/, $(machine-)) 281core- += $(patsubst %,arch/arm/plat-%/, $(plat-)) 282 283drivers-$(CONFIG_OPROFILE) += arch/arm/oprofile/ 284 285libs-y := arch/arm/lib/ $(libs-y) 286 287# Default target when executing plain make 288boot := arch/arm/boot 289ifeq ($(CONFIG_XIP_KERNEL),y) 290KBUILD_IMAGE := $(boot)/xipImage 291else 292KBUILD_IMAGE := $(boot)/zImage 293endif 294 295ifeq ($(CONFIG_STACKPROTECTOR_PER_TASK),y) 296prepare: stack_protector_prepare 297stack_protector_prepare: prepare0 298 $(eval SSP_PLUGIN_CFLAGS := \ 299 -fplugin-arg-arm_ssp_per_task_plugin-tso=$(shell \ 300 awk '{if ($$2 == "THREAD_SZ_ORDER") print $$3;}'\ 301 include/generated/asm-offsets.h) \ 302 -fplugin-arg-arm_ssp_per_task_plugin-offset=$(shell \ 303 awk '{if ($$2 == "TI_STACK_CANARY") print $$3;}'\ 304 include/generated/asm-offsets.h)) 305 $(eval KBUILD_CFLAGS += $(SSP_PLUGIN_CFLAGS)) 306 $(eval GCC_PLUGINS_CFLAGS += $(SSP_PLUGIN_CFLAGS)) 307endif 308 309all: $(notdir $(KBUILD_IMAGE)) 310 311 312archheaders: 313 $(Q)$(MAKE) $(build)=arch/arm/tools uapi 314 315archprepare: 316 $(Q)$(MAKE) $(build)=arch/arm/tools kapi 317 318# Convert bzImage to zImage 319bzImage: zImage 320 321BOOT_TARGETS = zImage Image xipImage bootpImage uImage 322INSTALL_TARGETS = zinstall uinstall install 323 324PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS) 325 326bootpImage uImage: zImage 327zImage: Image 328 329$(BOOT_TARGETS): vmlinux 330 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@ 331 @$(kecho) ' Kernel: $(boot)/$@ is ready' 332 333$(INSTALL_TARGETS): 334 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@ 335 336PHONY += vdso_install 337vdso_install: 338ifeq ($(CONFIG_VDSO),y) 339 $(Q)$(MAKE) $(build)=arch/arm/vdso $@ 340endif 341 342# We use MRPROPER_FILES and CLEAN_FILES now 343archclean: 344 $(Q)$(MAKE) $(clean)=$(boot) 345 346# My testing targets (bypasses dependencies) 347bp:; $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage 348 349 350define archhelp 351 echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)' 352 echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)' 353 echo '* xipImage - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)' 354 echo ' uImage - U-Boot wrapped zImage' 355 echo ' bootpImage - Combined zImage and initial RAM disk' 356 echo ' (supply initrd image via make variable INITRD=<path>)' 357 echo ' install - Install uncompressed kernel' 358 echo ' zinstall - Install compressed kernel' 359 echo ' uinstall - Install U-Boot wrapped compressed kernel' 360 echo ' Install using (your) ~/bin/$(INSTALLKERNEL) or' 361 echo ' (distribution) /sbin/$(INSTALLKERNEL) or' 362 echo ' install to $$(INSTALL_PATH) and run lilo' 363 echo ' vdso_install - Install unstripped vdso.so to $$(INSTALL_MOD_PATH)/vdso' 364endef 365