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_LDFLAGS_MODULE += -T $(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 -mapcs -mno-sched-prolog 40endif 41 42ifeq ($(CONFIG_CPU_BIG_ENDIAN),y) 43KBUILD_CPPFLAGS += -mbig-endian 44CHECKFLAGS += -D__ARMEB__ 45AS += -EB 46KBUILD_LDFLAGS += -EB 47else 48KBUILD_CPPFLAGS += -mlittle-endian 49CHECKFLAGS += -D__ARMEL__ 50AS += -EL 51KBUILD_LDFLAGS += -EL 52endif 53 54# 55# The Scalar Replacement of Aggregates (SRA) optimization pass in GCC 4.9 and 56# later may result in code being generated that handles signed short and signed 57# char struct members incorrectly. So disable it. 58# (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65932) 59# 60KBUILD_CFLAGS += $(call cc-option,-fno-ipa-sra) 61 62# This selects which instruction set is used. 63# Note that GCC does not numerically define an architecture version 64# macro, but instead defines a whole series of macros which makes 65# testing for a specific architecture or later rather impossible. 66arch-$(CONFIG_CPU_32v7M) =-D__LINUX_ARM_ARCH__=7 -march=armv7-m -Wa,-march=armv7-m 67arch-$(CONFIG_CPU_32v7) =-D__LINUX_ARM_ARCH__=7 $(call cc-option,-march=armv7-a,-march=armv5t -Wa$(comma)-march=armv7-a) 68arch-$(CONFIG_CPU_32v6) =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6,-march=armv5t -Wa$(comma)-march=armv6) 69# Only override the compiler option if ARMv6. The ARMv6K extensions are 70# always available in ARMv7 71ifeq ($(CONFIG_CPU_32v6),y) 72arch-$(CONFIG_CPU_32v6K) =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6k,-march=armv5t -Wa$(comma)-march=armv6k) 73endif 74arch-$(CONFIG_CPU_32v5) =-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t) 75arch-$(CONFIG_CPU_32v4T) =-D__LINUX_ARM_ARCH__=4 -march=armv4t 76arch-$(CONFIG_CPU_32v4) =-D__LINUX_ARM_ARCH__=4 -march=armv4 77arch-$(CONFIG_CPU_32v3) =-D__LINUX_ARM_ARCH__=3 -march=armv3m 78 79# Evaluate arch cc-option calls now 80arch-y := $(arch-y) 81 82# This selects how we optimise for the processor. 83tune-$(CONFIG_CPU_ARM7TDMI) =-mtune=arm7tdmi 84tune-$(CONFIG_CPU_ARM720T) =-mtune=arm7tdmi 85tune-$(CONFIG_CPU_ARM740T) =-mtune=arm7tdmi 86tune-$(CONFIG_CPU_ARM9TDMI) =-mtune=arm9tdmi 87tune-$(CONFIG_CPU_ARM940T) =-mtune=arm9tdmi 88tune-$(CONFIG_CPU_ARM946E) =$(call cc-option,-mtune=arm9e,-mtune=arm9tdmi) 89tune-$(CONFIG_CPU_ARM920T) =-mtune=arm9tdmi 90tune-$(CONFIG_CPU_ARM922T) =-mtune=arm9tdmi 91tune-$(CONFIG_CPU_ARM925T) =-mtune=arm9tdmi 92tune-$(CONFIG_CPU_ARM926T) =-mtune=arm9tdmi 93tune-$(CONFIG_CPU_FA526) =-mtune=arm9tdmi 94tune-$(CONFIG_CPU_SA110) =-mtune=strongarm110 95tune-$(CONFIG_CPU_SA1100) =-mtune=strongarm1100 96tune-$(CONFIG_CPU_XSCALE) =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale 97tune-$(CONFIG_CPU_XSC3) =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale 98tune-$(CONFIG_CPU_FEROCEON) =$(call cc-option,-mtune=marvell-f,-mtune=xscale) 99tune-$(CONFIG_CPU_V6) =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm) 100tune-$(CONFIG_CPU_V6K) =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm) 101 102# Evaluate tune cc-option calls now 103tune-y := $(tune-y) 104 105ifeq ($(CONFIG_AEABI),y) 106CFLAGS_ABI :=-mabi=aapcs-linux -mfpu=vfp 107else 108CFLAGS_ABI :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,) 109endif 110 111ifeq ($(CONFIG_ARM_UNWIND),y) 112CFLAGS_ABI +=-funwind-tables 113endif 114 115# Accept old syntax despite ".syntax unified" 116AFLAGS_NOWARN :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W) 117 118ifeq ($(CONFIG_THUMB2_KERNEL),y) 119CFLAGS_ISA :=-mthumb -Wa,-mimplicit-it=always $(AFLAGS_NOWARN) 120AFLAGS_ISA :=$(CFLAGS_ISA) -Wa$(comma)-mthumb 121# Work around buggy relocation from gas if requested: 122ifeq ($(CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11),y) 123KBUILD_CFLAGS_MODULE +=-fno-optimize-sibling-calls 124endif 125else 126CFLAGS_ISA :=$(call cc-option,-marm,) $(AFLAGS_NOWARN) 127AFLAGS_ISA :=$(CFLAGS_ISA) 128endif 129 130# Need -Uarm for gcc < 3.x 131KBUILD_CFLAGS +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm 132KBUILD_AFLAGS +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float 133 134CHECKFLAGS += -D__arm__ 135 136#Default value 137head-y := arch/arm/kernel/head$(MMUEXT).o 138 139# Text offset. This list is sorted numerically by address in order to 140# provide a means to avoid/resolve conflicts in multi-arch kernels. 141textofs-y := 0x00008000 142# We don't want the htc bootloader to corrupt kernel during resume 143textofs-$(CONFIG_PM_H1940) := 0x00108000 144# SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory 145ifeq ($(CONFIG_ARCH_SA1100),y) 146textofs-$(CONFIG_SA1111) := 0x00208000 147endif 148textofs-$(CONFIG_ARCH_MSM8X60) := 0x00208000 149textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000 150textofs-$(CONFIG_ARCH_MESON) := 0x00208000 151textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000 152 153# Machine directory name. This list is sorted alphanumerically 154# by CONFIG_* macro name. 155machine-$(CONFIG_ARCH_ACTIONS) += actions 156machine-$(CONFIG_ARCH_ALPINE) += alpine 157machine-$(CONFIG_ARCH_ARTPEC) += artpec 158machine-$(CONFIG_ARCH_AT91) += at91 159machine-$(CONFIG_ARCH_AXXIA) += axxia 160machine-$(CONFIG_ARCH_BCM) += bcm 161machine-$(CONFIG_ARCH_BERLIN) += berlin 162machine-$(CONFIG_ARCH_CLPS711X) += clps711x 163machine-$(CONFIG_ARCH_CNS3XXX) += cns3xxx 164machine-$(CONFIG_ARCH_DAVINCI) += davinci 165machine-$(CONFIG_ARCH_DIGICOLOR) += digicolor 166machine-$(CONFIG_ARCH_DOVE) += dove 167machine-$(CONFIG_ARCH_EBSA110) += ebsa110 168machine-$(CONFIG_ARCH_EFM32) += efm32 169machine-$(CONFIG_ARCH_EP93XX) += ep93xx 170machine-$(CONFIG_ARCH_EXYNOS) += exynos 171machine-$(CONFIG_ARCH_FOOTBRIDGE) += footbridge 172machine-$(CONFIG_ARCH_GEMINI) += gemini 173machine-$(CONFIG_ARCH_HIGHBANK) += highbank 174machine-$(CONFIG_ARCH_HISI) += hisi 175machine-$(CONFIG_ARCH_INTEGRATOR) += integrator 176machine-$(CONFIG_ARCH_IOP13XX) += iop13xx 177machine-$(CONFIG_ARCH_IOP32X) += iop32x 178machine-$(CONFIG_ARCH_IOP33X) += iop33x 179machine-$(CONFIG_ARCH_IXP4XX) += ixp4xx 180machine-$(CONFIG_ARCH_KEYSTONE) += keystone 181machine-$(CONFIG_ARCH_KS8695) += ks8695 182machine-$(CONFIG_ARCH_LPC18XX) += lpc18xx 183machine-$(CONFIG_ARCH_LPC32XX) += lpc32xx 184machine-$(CONFIG_ARCH_MESON) += meson 185machine-$(CONFIG_ARCH_MMP) += mmp 186machine-$(CONFIG_ARCH_MPS2) += vexpress 187machine-$(CONFIG_ARCH_MOXART) += moxart 188machine-$(CONFIG_ARCH_MV78XX0) += mv78xx0 189machine-$(CONFIG_ARCH_MVEBU) += mvebu 190machine-$(CONFIG_ARCH_MXC) += imx 191machine-$(CONFIG_ARCH_MEDIATEK) += mediatek 192machine-$(CONFIG_ARCH_MILBEAUT) += milbeaut 193machine-$(CONFIG_ARCH_MXS) += mxs 194machine-$(CONFIG_ARCH_NETX) += netx 195machine-$(CONFIG_ARCH_NOMADIK) += nomadik 196machine-$(CONFIG_ARCH_NPCM) += npcm 197machine-$(CONFIG_ARCH_NSPIRE) += nspire 198machine-$(CONFIG_ARCH_OXNAS) += oxnas 199machine-$(CONFIG_ARCH_OMAP1) += omap1 200machine-$(CONFIG_ARCH_OMAP2PLUS) += omap2 201machine-$(CONFIG_ARCH_ORION5X) += orion5x 202machine-$(CONFIG_ARCH_PICOXCELL) += picoxcell 203machine-$(CONFIG_ARCH_PXA) += pxa 204machine-$(CONFIG_ARCH_QCOM) += qcom 205machine-$(CONFIG_ARCH_RDA) += rda 206machine-$(CONFIG_ARCH_REALVIEW) += realview 207machine-$(CONFIG_ARCH_ROCKCHIP) += rockchip 208machine-$(CONFIG_ARCH_RPC) += rpc 209machine-$(CONFIG_ARCH_S3C24XX) += s3c24xx 210machine-$(CONFIG_ARCH_S3C64XX) += s3c64xx 211machine-$(CONFIG_ARCH_S5PV210) += s5pv210 212machine-$(CONFIG_ARCH_SA1100) += sa1100 213machine-$(CONFIG_ARCH_RENESAS) += shmobile 214machine-$(CONFIG_ARCH_SIRF) += prima2 215machine-$(CONFIG_ARCH_SOCFPGA) += socfpga 216machine-$(CONFIG_ARCH_STI) += sti 217machine-$(CONFIG_ARCH_STM32) += stm32 218machine-$(CONFIG_ARCH_SUNXI) += sunxi 219machine-$(CONFIG_ARCH_TANGO) += tango 220machine-$(CONFIG_ARCH_TEGRA) += tegra 221machine-$(CONFIG_ARCH_U300) += u300 222machine-$(CONFIG_ARCH_U8500) += ux500 223machine-$(CONFIG_ARCH_VERSATILE) += versatile 224machine-$(CONFIG_ARCH_VEXPRESS) += vexpress 225machine-$(CONFIG_ARCH_VT8500) += vt8500 226machine-$(CONFIG_ARCH_W90X900) += w90x900 227machine-$(CONFIG_ARCH_ZX) += zx 228machine-$(CONFIG_ARCH_ZYNQ) += zynq 229machine-$(CONFIG_PLAT_SPEAR) += spear 230 231# Platform directory name. This list is sorted alphanumerically 232# by CONFIG_* macro name. 233plat-$(CONFIG_ARCH_EXYNOS) += samsung 234plat-$(CONFIG_ARCH_OMAP) += omap 235plat-$(CONFIG_ARCH_S3C64XX) += samsung 236plat-$(CONFIG_ARCH_S5PV210) += samsung 237plat-$(CONFIG_PLAT_IOP) += iop 238plat-$(CONFIG_PLAT_ORION) += orion 239plat-$(CONFIG_PLAT_PXA) += pxa 240plat-$(CONFIG_PLAT_S3C24XX) += samsung 241plat-$(CONFIG_PLAT_VERSATILE) += versatile 242 243ifeq ($(CONFIG_ARCH_EBSA110),y) 244# This is what happens if you forget the IOCS16 line. 245# PCMCIA cards stop working. 246CFLAGS_3c589_cs.o :=-DISA_SIXTEEN_BIT_PERIPHERAL 247export CFLAGS_3c589_cs.o 248endif 249 250# The byte offset of the kernel image in RAM from the start of RAM. 251TEXT_OFFSET := $(textofs-y) 252 253# The first directory contains additional information for the boot setup code 254ifneq ($(machine-y),) 255MACHINE := arch/arm/mach-$(word 1,$(machine-y))/ 256else 257MACHINE := 258endif 259ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y) 260MACHINE := 261endif 262 263machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y)) 264platdirs := $(patsubst %,arch/arm/plat-%/,$(sort $(plat-y))) 265 266ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y) 267ifneq ($(CONFIG_ARM_SINGLE_ARMV7M),y) 268KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs)) 269endif 270endif 271 272export TEXT_OFFSET GZFLAGS MMUEXT 273 274# Do we have FASTFPE? 275FASTFPE :=arch/arm/fastfpe 276ifeq ($(FASTFPE),$(wildcard $(FASTFPE))) 277FASTFPE_OBJ :=$(FASTFPE)/ 278endif 279 280core-$(CONFIG_FPE_NWFPE) += arch/arm/nwfpe/ 281core-$(CONFIG_FPE_FASTFPE) += $(FASTFPE_OBJ) 282core-$(CONFIG_VFP) += arch/arm/vfp/ 283core-$(CONFIG_XEN) += arch/arm/xen/ 284core-$(CONFIG_KVM_ARM_HOST) += arch/arm/kvm/ 285core-$(CONFIG_VDSO) += arch/arm/vdso/ 286 287# If we have a machine-specific directory, then include it in the build. 288core-y += arch/arm/kernel/ arch/arm/mm/ arch/arm/common/ 289core-y += arch/arm/probes/ 290core-y += arch/arm/net/ 291core-y += arch/arm/crypto/ 292core-y += $(machdirs) $(platdirs) 293 294drivers-$(CONFIG_OPROFILE) += arch/arm/oprofile/ 295 296libs-y := arch/arm/lib/ $(libs-y) 297 298# Default target when executing plain make 299boot := arch/arm/boot 300ifeq ($(CONFIG_XIP_KERNEL),y) 301KBUILD_IMAGE := $(boot)/xipImage 302else 303KBUILD_IMAGE := $(boot)/zImage 304endif 305 306ifeq ($(CONFIG_STACKPROTECTOR_PER_TASK),y) 307prepare: stack_protector_prepare 308stack_protector_prepare: prepare0 309 $(eval KBUILD_CFLAGS += \ 310 -fplugin-arg-arm_ssp_per_task_plugin-tso=$(shell \ 311 awk '{if ($$2 == "THREAD_SZ_ORDER") print $$3;}'\ 312 include/generated/asm-offsets.h) \ 313 -fplugin-arg-arm_ssp_per_task_plugin-offset=$(shell \ 314 awk '{if ($$2 == "TI_STACK_CANARY") print $$3;}'\ 315 include/generated/asm-offsets.h)) 316endif 317 318all: $(notdir $(KBUILD_IMAGE)) 319 320 321archheaders: 322 $(Q)$(MAKE) $(build)=arch/arm/tools uapi 323 324archprepare: 325 $(Q)$(MAKE) $(build)=arch/arm/tools kapi 326 327# Convert bzImage to zImage 328bzImage: zImage 329 330BOOT_TARGETS = zImage Image xipImage bootpImage uImage 331INSTALL_TARGETS = zinstall uinstall install 332 333PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS) 334 335bootpImage uImage: zImage 336zImage: Image 337 338$(BOOT_TARGETS): vmlinux 339 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@ 340 @$(kecho) ' Kernel: $(boot)/$@ is ready' 341 342$(INSTALL_TARGETS): 343 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@ 344 345PHONY += vdso_install 346vdso_install: 347ifeq ($(CONFIG_VDSO),y) 348 $(Q)$(MAKE) $(build)=arch/arm/vdso $@ 349endif 350 351# We use MRPROPER_FILES and CLEAN_FILES now 352archclean: 353 $(Q)$(MAKE) $(clean)=$(boot) 354 355# My testing targets (bypasses dependencies) 356bp:; $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage 357 358 359define archhelp 360 echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)' 361 echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)' 362 echo '* xipImage - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)' 363 echo ' uImage - U-Boot wrapped zImage' 364 echo ' bootpImage - Combined zImage and initial RAM disk' 365 echo ' (supply initrd image via make variable INITRD=<path>)' 366 echo ' install - Install uncompressed kernel' 367 echo ' zinstall - Install compressed kernel' 368 echo ' uinstall - Install U-Boot wrapped compressed kernel' 369 echo ' Install using (your) ~/bin/$(INSTALLKERNEL) or' 370 echo ' (distribution) /sbin/$(INSTALLKERNEL) or' 371 echo ' install to $$(INSTALL_PATH) and run lilo' 372 echo ' vdso_install - Install unstripped vdso.so to $$(INSTALL_MOD_PATH)/vdso' 373endef 374