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 ($(CONFIG_CPU_ENDIAN_BE8),y) 15LDFLAGS_vmlinux += --be8 16KBUILD_LDFLAGS_MODULE += --be8 17endif 18 19ifeq ($(CONFIG_ARM_MODULE_PLTS),y) 20KBUILD_LDS_MODULE += $(srctree)/arch/arm/kernel/module.lds 21endif 22 23GZFLAGS :=-9 24#KBUILD_CFLAGS +=-pipe 25 26# Never generate .eh_frame 27KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm) 28 29# This should work on most of the modern platforms 30KBUILD_DEFCONFIG := multi_v7_defconfig 31 32# defines filename extension depending memory management type. 33ifeq ($(CONFIG_MMU),) 34MMUEXT := -nommu 35KBUILD_CFLAGS += $(call cc-option,-mno-unaligned-access) 36endif 37 38ifeq ($(CONFIG_FRAME_POINTER),y) 39KBUILD_CFLAGS +=-fno-omit-frame-pointer 40ifeq ($(CONFIG_CC_IS_GCC),y) 41KBUILD_CFLAGS += -mapcs -mno-sched-prolog 42endif 43endif 44 45ifeq ($(CONFIG_CPU_BIG_ENDIAN),y) 46KBUILD_CPPFLAGS += -mbig-endian 47CHECKFLAGS += -D__ARMEB__ 48AS += -EB 49KBUILD_LDFLAGS += -EB 50else 51KBUILD_CPPFLAGS += -mlittle-endian 52CHECKFLAGS += -D__ARMEL__ 53AS += -EL 54KBUILD_LDFLAGS += -EL 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 -Wa,-march=armv7-m 70arch-$(CONFIG_CPU_32v7) =-D__LINUX_ARM_ARCH__=7 $(call cc-option,-march=armv7-a,-march=armv5t -Wa$(comma)-march=armv7-a) 71arch-$(CONFIG_CPU_32v6) =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6,-march=armv5t -Wa$(comma)-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 $(call cc-option,-march=armv6k,-march=armv5t -Wa$(comma)-march=armv6k) 76endif 77arch-$(CONFIG_CPU_32v5) =-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t) 78arch-$(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-$(CONFIG_CPU_ARM946E) =$(call cc-option,-mtune=arm9e,-mtune=arm9tdmi) 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) =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale 100tune-$(CONFIG_CPU_XSC3) =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale 101tune-$(CONFIG_CPU_FEROCEON) =$(call cc-option,-mtune=marvell-f,-mtune=xscale) 102tune-$(CONFIG_CPU_V6) =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm) 103tune-$(CONFIG_CPU_V6K) =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm) 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$(comma)-mthumb 128# Work around buggy relocation from gas if requested: 129ifeq ($(CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11),y) 130KBUILD_CFLAGS_MODULE +=-fno-optimize-sibling-calls 131endif 132else 133CFLAGS_ISA :=$(call cc-option,-marm,) $(AFLAGS_NOWARN) 134AFLAGS_ISA :=$(CFLAGS_ISA) 135endif 136 137# Need -Uarm for gcc < 3.x 138KBUILD_CFLAGS +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm 139KBUILD_AFLAGS +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float 140 141CHECKFLAGS += -D__arm__ 142 143#Default value 144head-y := arch/arm/kernel/head$(MMUEXT).o 145 146# Text offset. This list is sorted numerically by address in order to 147# provide a means to avoid/resolve conflicts in multi-arch kernels. 148textofs-y := 0x00008000 149# We don't want the htc bootloader to corrupt kernel during resume 150textofs-$(CONFIG_PM_H1940) := 0x00108000 151# SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory 152ifeq ($(CONFIG_ARCH_SA1100),y) 153textofs-$(CONFIG_SA1111) := 0x00208000 154endif 155textofs-$(CONFIG_ARCH_MSM8X60) := 0x00208000 156textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000 157textofs-$(CONFIG_ARCH_MESON) := 0x00208000 158textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000 159 160# Machine directory name. This list is sorted alphanumerically 161# by CONFIG_* macro name. 162machine-$(CONFIG_ARCH_ACTIONS) += actions 163machine-$(CONFIG_ARCH_ALPINE) += alpine 164machine-$(CONFIG_ARCH_ARTPEC) += artpec 165machine-$(CONFIG_ARCH_ASPEED) += aspeed 166machine-$(CONFIG_ARCH_AT91) += at91 167machine-$(CONFIG_ARCH_AXXIA) += axxia 168machine-$(CONFIG_ARCH_BCM) += bcm 169machine-$(CONFIG_ARCH_BERLIN) += berlin 170machine-$(CONFIG_ARCH_CLPS711X) += clps711x 171machine-$(CONFIG_ARCH_CNS3XXX) += cns3xxx 172machine-$(CONFIG_ARCH_DAVINCI) += davinci 173machine-$(CONFIG_ARCH_DIGICOLOR) += digicolor 174machine-$(CONFIG_ARCH_DOVE) += dove 175machine-$(CONFIG_ARCH_EBSA110) += ebsa110 176machine-$(CONFIG_ARCH_EFM32) += efm32 177machine-$(CONFIG_ARCH_EP93XX) += ep93xx 178machine-$(CONFIG_ARCH_EXYNOS) += exynos 179machine-$(CONFIG_ARCH_FOOTBRIDGE) += footbridge 180machine-$(CONFIG_ARCH_GEMINI) += gemini 181machine-$(CONFIG_ARCH_HIGHBANK) += highbank 182machine-$(CONFIG_ARCH_HISI) += hisi 183machine-$(CONFIG_ARCH_INTEGRATOR) += integrator 184machine-$(CONFIG_ARCH_IOP32X) += iop32x 185machine-$(CONFIG_ARCH_IXP4XX) += ixp4xx 186machine-$(CONFIG_ARCH_KEYSTONE) += keystone 187machine-$(CONFIG_ARCH_LPC18XX) += lpc18xx 188machine-$(CONFIG_ARCH_LPC32XX) += lpc32xx 189machine-$(CONFIG_ARCH_MESON) += meson 190machine-$(CONFIG_ARCH_MMP) += mmp 191machine-$(CONFIG_ARCH_MPS2) += vexpress 192machine-$(CONFIG_ARCH_MOXART) += moxart 193machine-$(CONFIG_ARCH_MV78XX0) += mv78xx0 194machine-$(CONFIG_ARCH_MVEBU) += mvebu 195machine-$(CONFIG_ARCH_MXC) += imx 196machine-$(CONFIG_ARCH_MEDIATEK) += mediatek 197machine-$(CONFIG_ARCH_MILBEAUT) += milbeaut 198machine-$(CONFIG_ARCH_MXS) += mxs 199machine-$(CONFIG_ARCH_NOMADIK) += nomadik 200machine-$(CONFIG_ARCH_NPCM) += npcm 201machine-$(CONFIG_ARCH_NSPIRE) += nspire 202machine-$(CONFIG_ARCH_OXNAS) += oxnas 203machine-$(CONFIG_ARCH_OMAP1) += omap1 204machine-$(CONFIG_ARCH_OMAP2PLUS) += omap2 205machine-$(CONFIG_ARCH_ORION5X) += orion5x 206machine-$(CONFIG_ARCH_PICOXCELL) += picoxcell 207machine-$(CONFIG_ARCH_PXA) += pxa 208machine-$(CONFIG_ARCH_QCOM) += qcom 209machine-$(CONFIG_ARCH_RDA) += rda 210machine-$(CONFIG_ARCH_REALVIEW) += realview 211machine-$(CONFIG_ARCH_ROCKCHIP) += rockchip 212machine-$(CONFIG_ARCH_RPC) += rpc 213machine-$(CONFIG_ARCH_S3C24XX) += s3c24xx 214machine-$(CONFIG_ARCH_S3C64XX) += s3c64xx 215machine-$(CONFIG_ARCH_S5PV210) += s5pv210 216machine-$(CONFIG_ARCH_SA1100) += sa1100 217machine-$(CONFIG_ARCH_RENESAS) += shmobile 218machine-$(CONFIG_ARCH_SIRF) += prima2 219machine-$(CONFIG_ARCH_SOCFPGA) += socfpga 220machine-$(CONFIG_ARCH_STI) += sti 221machine-$(CONFIG_ARCH_STM32) += stm32 222machine-$(CONFIG_ARCH_SUNXI) += sunxi 223machine-$(CONFIG_ARCH_TANGO) += tango 224machine-$(CONFIG_ARCH_TEGRA) += tegra 225machine-$(CONFIG_ARCH_U300) += u300 226machine-$(CONFIG_ARCH_U8500) += ux500 227machine-$(CONFIG_ARCH_VERSATILE) += versatile 228machine-$(CONFIG_ARCH_VEXPRESS) += vexpress 229machine-$(CONFIG_ARCH_VT8500) += vt8500 230machine-$(CONFIG_ARCH_ZX) += zx 231machine-$(CONFIG_ARCH_ZYNQ) += zynq 232machine-$(CONFIG_PLAT_SPEAR) += spear 233 234# Platform directory name. This list is sorted alphanumerically 235# by CONFIG_* macro name. 236plat-$(CONFIG_ARCH_EXYNOS) += samsung 237plat-$(CONFIG_ARCH_OMAP) += omap 238plat-$(CONFIG_ARCH_S3C64XX) += samsung 239plat-$(CONFIG_ARCH_S5PV210) += samsung 240plat-$(CONFIG_PLAT_ORION) += orion 241plat-$(CONFIG_PLAT_PXA) += pxa 242plat-$(CONFIG_PLAT_S3C24XX) += samsung 243plat-$(CONFIG_PLAT_VERSATILE) += versatile 244 245ifeq ($(CONFIG_ARCH_EBSA110),y) 246# This is what happens if you forget the IOCS16 line. 247# PCMCIA cards stop working. 248CFLAGS_3c589_cs.o :=-DISA_SIXTEEN_BIT_PERIPHERAL 249export CFLAGS_3c589_cs.o 250endif 251 252# The byte offset of the kernel image in RAM from the start of RAM. 253TEXT_OFFSET := $(textofs-y) 254 255# The first directory contains additional information for the boot setup code 256ifneq ($(machine-y),) 257MACHINE := arch/arm/mach-$(word 1,$(machine-y))/ 258else 259MACHINE := 260endif 261ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y) 262MACHINE := 263endif 264 265machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y)) 266platdirs := $(patsubst %,arch/arm/plat-%/,$(sort $(plat-y))) 267 268ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y) 269ifneq ($(CONFIG_ARM_SINGLE_ARMV7M),y) 270KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs)) 271endif 272endif 273 274export TEXT_OFFSET GZFLAGS MMUEXT 275 276core-$(CONFIG_FPE_NWFPE) += arch/arm/nwfpe/ 277# Put arch/arm/fastfpe/ to use this. 278core-$(CONFIG_FPE_FASTFPE) += $(patsubst $(srctree)/%,%,$(wildcard $(srctree)/arch/arm/fastfpe/)) 279core-$(CONFIG_VFP) += arch/arm/vfp/ 280core-$(CONFIG_XEN) += arch/arm/xen/ 281core-$(CONFIG_KVM_ARM_HOST) += arch/arm/kvm/ 282core-$(CONFIG_VDSO) += arch/arm/vdso/ 283 284# If we have a machine-specific directory, then include it in the build. 285core-y += arch/arm/kernel/ arch/arm/mm/ arch/arm/common/ 286core-y += arch/arm/probes/ 287core-y += arch/arm/net/ 288core-y += arch/arm/crypto/ 289core-y += $(machdirs) $(platdirs) 290 291# For cleaning 292core- += $(patsubst %,arch/arm/mach-%/, $(machine-)) 293core- += $(patsubst %,arch/arm/plat-%/, $(plat-)) 294 295drivers-$(CONFIG_OPROFILE) += arch/arm/oprofile/ 296 297libs-y := arch/arm/lib/ $(libs-y) 298 299# Default target when executing plain make 300boot := arch/arm/boot 301ifeq ($(CONFIG_XIP_KERNEL),y) 302KBUILD_IMAGE := $(boot)/xipImage 303else 304KBUILD_IMAGE := $(boot)/zImage 305endif 306 307ifeq ($(CONFIG_STACKPROTECTOR_PER_TASK),y) 308prepare: stack_protector_prepare 309stack_protector_prepare: prepare0 310 $(eval KBUILD_CFLAGS += \ 311 -fplugin-arg-arm_ssp_per_task_plugin-tso=$(shell \ 312 awk '{if ($$2 == "THREAD_SZ_ORDER") print $$3;}'\ 313 include/generated/asm-offsets.h) \ 314 -fplugin-arg-arm_ssp_per_task_plugin-offset=$(shell \ 315 awk '{if ($$2 == "TI_STACK_CANARY") print $$3;}'\ 316 include/generated/asm-offsets.h)) 317endif 318 319all: $(notdir $(KBUILD_IMAGE)) 320 321 322archheaders: 323 $(Q)$(MAKE) $(build)=arch/arm/tools uapi 324 325archprepare: 326 $(Q)$(MAKE) $(build)=arch/arm/tools kapi 327 328# Convert bzImage to zImage 329bzImage: zImage 330 331BOOT_TARGETS = zImage Image xipImage bootpImage uImage 332INSTALL_TARGETS = zinstall uinstall install 333 334PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS) 335 336bootpImage uImage: zImage 337zImage: Image 338 339$(BOOT_TARGETS): vmlinux 340 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@ 341 @$(kecho) ' Kernel: $(boot)/$@ is ready' 342 343$(INSTALL_TARGETS): 344 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@ 345 346PHONY += vdso_install 347vdso_install: 348ifeq ($(CONFIG_VDSO),y) 349 $(Q)$(MAKE) $(build)=arch/arm/vdso $@ 350endif 351 352# We use MRPROPER_FILES and CLEAN_FILES now 353archclean: 354 $(Q)$(MAKE) $(clean)=$(boot) 355 356# My testing targets (bypasses dependencies) 357bp:; $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage 358 359 360define archhelp 361 echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)' 362 echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)' 363 echo '* xipImage - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)' 364 echo ' uImage - U-Boot wrapped zImage' 365 echo ' bootpImage - Combined zImage and initial RAM disk' 366 echo ' (supply initrd image via make variable INITRD=<path>)' 367 echo ' install - Install uncompressed kernel' 368 echo ' zinstall - Install compressed kernel' 369 echo ' uinstall - Install U-Boot wrapped compressed kernel' 370 echo ' Install using (your) ~/bin/$(INSTALLKERNEL) or' 371 echo ' (distribution) /sbin/$(INSTALLKERNEL) or' 372 echo ' install to $$(INSTALL_PATH) and run lilo' 373 echo ' vdso_install - Install unstripped vdso.so to $$(INSTALL_MOD_PATH)/vdso' 374endef 375