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 13# Ensure linker flags are correct 14LDFLAGS := 15 16LDFLAGS_vmlinux :=-p --no-undefined -X --pic-veneer 17ifeq ($(CONFIG_CPU_ENDIAN_BE8),y) 18LDFLAGS_vmlinux += --be8 19KBUILD_LDFLAGS_MODULE += --be8 20endif 21 22ifeq ($(CONFIG_ARM_MODULE_PLTS),y) 23KBUILD_LDFLAGS_MODULE += -T $(srctree)/arch/arm/kernel/module.lds 24endif 25 26GZFLAGS :=-9 27#KBUILD_CFLAGS +=-pipe 28 29# Never generate .eh_frame 30KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm) 31 32# This should work on most of the modern platforms 33KBUILD_DEFCONFIG := multi_v7_defconfig 34 35# defines filename extension depending memory management type. 36ifeq ($(CONFIG_MMU),) 37MMUEXT := -nommu 38KBUILD_CFLAGS += $(call cc-option,-mno-unaligned-access) 39endif 40 41ifeq ($(CONFIG_FRAME_POINTER),y) 42KBUILD_CFLAGS +=-fno-omit-frame-pointer -mapcs -mno-sched-prolog 43endif 44 45ifeq ($(CONFIG_CPU_BIG_ENDIAN),y) 46KBUILD_CPPFLAGS += -mbig-endian 47CHECKFLAGS += -D__ARMEB__ 48AS += -EB 49LD += -EB 50else 51KBUILD_CPPFLAGS += -mlittle-endian 52CHECKFLAGS += -D__ARMEL__ 53AS += -EL 54LD += -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=armv3 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 -mno-thumb-interwork -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 ($(CONFIG_THUMB2_KERNEL),y) 119AFLAGS_AUTOIT :=$(call as-option,-Wa$(comma)-mimplicit-it=always,-Wa$(comma)-mauto-it) 120AFLAGS_NOWARN :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W) 121CFLAGS_ISA :=-mthumb $(AFLAGS_AUTOIT) $(AFLAGS_NOWARN) 122AFLAGS_ISA :=$(CFLAGS_ISA) -Wa$(comma)-mthumb 123# Work around buggy relocation from gas if requested: 124ifeq ($(CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11),y) 125KBUILD_CFLAGS_MODULE +=-fno-optimize-sibling-calls 126endif 127else 128CFLAGS_ISA :=$(call cc-option,-marm,) 129AFLAGS_ISA :=$(CFLAGS_ISA) 130endif 131 132# Need -Uarm for gcc < 3.x 133KBUILD_CFLAGS +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm 134KBUILD_AFLAGS +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float 135 136CHECKFLAGS += -D__arm__ -m32 137 138#Default value 139head-y := arch/arm/kernel/head$(MMUEXT).o 140 141# Text offset. This list is sorted numerically by address in order to 142# provide a means to avoid/resolve conflicts in multi-arch kernels. 143textofs-y := 0x00008000 144# We don't want the htc bootloader to corrupt kernel during resume 145textofs-$(CONFIG_PM_H1940) := 0x00108000 146# SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory 147ifeq ($(CONFIG_ARCH_SA1100),y) 148textofs-$(CONFIG_SA1111) := 0x00208000 149endif 150textofs-$(CONFIG_ARCH_MSM8X60) := 0x00208000 151textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000 152textofs-$(CONFIG_ARCH_MESON) := 0x00208000 153textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000 154 155# Machine directory name. This list is sorted alphanumerically 156# by CONFIG_* macro name. 157machine-$(CONFIG_ARCH_ACTIONS) += actions 158machine-$(CONFIG_ARCH_ALPINE) += alpine 159machine-$(CONFIG_ARCH_ARTPEC) += artpec 160machine-$(CONFIG_ARCH_AT91) += at91 161machine-$(CONFIG_ARCH_AXXIA) += axxia 162machine-$(CONFIG_ARCH_BCM) += bcm 163machine-$(CONFIG_ARCH_BERLIN) += berlin 164machine-$(CONFIG_ARCH_CLPS711X) += clps711x 165machine-$(CONFIG_ARCH_CNS3XXX) += cns3xxx 166machine-$(CONFIG_ARCH_DAVINCI) += davinci 167machine-$(CONFIG_ARCH_DIGICOLOR) += digicolor 168machine-$(CONFIG_ARCH_DOVE) += dove 169machine-$(CONFIG_ARCH_EBSA110) += ebsa110 170machine-$(CONFIG_ARCH_EFM32) += efm32 171machine-$(CONFIG_ARCH_EP93XX) += ep93xx 172machine-$(CONFIG_ARCH_EXYNOS) += exynos 173machine-$(CONFIG_ARCH_FOOTBRIDGE) += footbridge 174machine-$(CONFIG_ARCH_GEMINI) += gemini 175machine-$(CONFIG_ARCH_HIGHBANK) += highbank 176machine-$(CONFIG_ARCH_HISI) += hisi 177machine-$(CONFIG_ARCH_INTEGRATOR) += integrator 178machine-$(CONFIG_ARCH_IOP13XX) += iop13xx 179machine-$(CONFIG_ARCH_IOP32X) += iop32x 180machine-$(CONFIG_ARCH_IOP33X) += iop33x 181machine-$(CONFIG_ARCH_IXP4XX) += ixp4xx 182machine-$(CONFIG_ARCH_KEYSTONE) += keystone 183machine-$(CONFIG_ARCH_KS8695) += ks8695 184machine-$(CONFIG_ARCH_LPC18XX) += lpc18xx 185machine-$(CONFIG_ARCH_LPC32XX) += lpc32xx 186machine-$(CONFIG_ARCH_MESON) += meson 187machine-$(CONFIG_ARCH_MMP) += mmp 188machine-$(CONFIG_ARCH_MPS2) += vexpress 189machine-$(CONFIG_ARCH_MOXART) += moxart 190machine-$(CONFIG_ARCH_MV78XX0) += mv78xx0 191machine-$(CONFIG_ARCH_MVEBU) += mvebu 192machine-$(CONFIG_ARCH_MXC) += imx 193machine-$(CONFIG_ARCH_MEDIATEK) += mediatek 194machine-$(CONFIG_ARCH_MXS) += mxs 195machine-$(CONFIG_ARCH_NETX) += netx 196machine-$(CONFIG_ARCH_NOMADIK) += nomadik 197machine-$(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_REALVIEW) += realview 206machine-$(CONFIG_ARCH_ROCKCHIP) += rockchip 207machine-$(CONFIG_ARCH_RPC) += rpc 208machine-$(CONFIG_ARCH_S3C24XX) += s3c24xx 209machine-$(CONFIG_ARCH_S3C64XX) += s3c64xx 210machine-$(CONFIG_ARCH_S5PV210) += s5pv210 211machine-$(CONFIG_ARCH_SA1100) += sa1100 212machine-$(CONFIG_ARCH_SHMOBILE) += shmobile 213machine-$(CONFIG_ARCH_SIRF) += prima2 214machine-$(CONFIG_ARCH_SOCFPGA) += socfpga 215machine-$(CONFIG_ARCH_STI) += sti 216machine-$(CONFIG_ARCH_STM32) += stm32 217machine-$(CONFIG_ARCH_SUNXI) += sunxi 218machine-$(CONFIG_ARCH_TANGO) += tango 219machine-$(CONFIG_ARCH_TEGRA) += tegra 220machine-$(CONFIG_ARCH_U300) += u300 221machine-$(CONFIG_ARCH_U8500) += ux500 222machine-$(CONFIG_ARCH_UNIPHIER) += uniphier 223machine-$(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 ($(CONFIG_ARM_SINGLE_ARMV7M),y) 268ifeq ($(KBUILD_SRC),) 269KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(machdirs) $(platdirs)) 270else 271KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs)) 272endif 273endif 274endif 275 276export TEXT_OFFSET GZFLAGS MMUEXT 277 278# Do we have FASTFPE? 279FASTFPE :=arch/arm/fastfpe 280ifeq ($(FASTFPE),$(wildcard $(FASTFPE))) 281FASTFPE_OBJ :=$(FASTFPE)/ 282endif 283 284core-$(CONFIG_FPE_NWFPE) += arch/arm/nwfpe/ 285core-$(CONFIG_FPE_FASTFPE) += $(FASTFPE_OBJ) 286core-$(CONFIG_VFP) += arch/arm/vfp/ 287core-$(CONFIG_XEN) += arch/arm/xen/ 288core-$(CONFIG_KVM_ARM_HOST) += arch/arm/kvm/ 289core-$(CONFIG_VDSO) += arch/arm/vdso/ 290 291# If we have a machine-specific directory, then include it in the build. 292core-y += arch/arm/kernel/ arch/arm/mm/ arch/arm/common/ 293core-y += arch/arm/probes/ 294core-y += arch/arm/net/ 295core-y += arch/arm/crypto/ 296core-y += arch/arm/firmware/ 297core-y += $(machdirs) $(platdirs) 298 299drivers-$(CONFIG_OPROFILE) += arch/arm/oprofile/ 300 301libs-y := arch/arm/lib/ $(libs-y) 302 303# Default target when executing plain make 304boot := arch/arm/boot 305ifeq ($(CONFIG_XIP_KERNEL),y) 306KBUILD_IMAGE := $(boot)/xipImage 307else 308KBUILD_IMAGE := $(boot)/zImage 309endif 310 311# Build the DT binary blobs if we have OF configured 312ifeq ($(CONFIG_USE_OF),y) 313KBUILD_DTBS := dtbs 314endif 315 316all: $(notdir $(KBUILD_IMAGE)) $(KBUILD_DTBS) 317 318 319archheaders: 320 $(Q)$(MAKE) $(build)=arch/arm/tools uapi 321 322archprepare: 323 $(Q)$(MAKE) $(build)=arch/arm/tools kapi 324 325# Convert bzImage to zImage 326bzImage: zImage 327 328BOOT_TARGETS = zImage Image xipImage bootpImage uImage 329INSTALL_TARGETS = zinstall uinstall install 330 331PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS) 332 333bootpImage uImage: zImage 334zImage: Image 335 336$(BOOT_TARGETS): vmlinux 337 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@ 338 @$(kecho) ' Kernel: $(boot)/$@ is ready' 339 340$(INSTALL_TARGETS): 341 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@ 342 343%.dtb: | scripts 344 $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@ 345 346PHONY += dtbs dtbs_install 347 348dtbs: prepare scripts 349 $(Q)$(MAKE) $(build)=$(boot)/dts 350 351dtbs_install: 352 $(Q)$(MAKE) $(dtbinst)=$(boot)/dts 353 354PHONY += vdso_install 355vdso_install: 356ifeq ($(CONFIG_VDSO),y) 357 $(Q)$(MAKE) $(build)=arch/arm/vdso $@ 358endif 359 360# We use MRPROPER_FILES and CLEAN_FILES now 361archclean: 362 $(Q)$(MAKE) $(clean)=$(boot) 363 364# My testing targets (bypasses dependencies) 365bp:; $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage 366 367 368define archhelp 369 echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)' 370 echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)' 371 echo '* xipImage - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)' 372 echo ' uImage - U-Boot wrapped zImage' 373 echo ' bootpImage - Combined zImage and initial RAM disk' 374 echo ' (supply initrd image via make variable INITRD=<path>)' 375 echo '* dtbs - Build device tree blobs for enabled boards' 376 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)' 377 echo ' install - Install uncompressed kernel' 378 echo ' zinstall - Install compressed kernel' 379 echo ' uinstall - Install U-Boot wrapped compressed kernel' 380 echo ' Install using (your) ~/bin/$(INSTALLKERNEL) or' 381 echo ' (distribution) /sbin/$(INSTALLKERNEL) or' 382 echo ' install to $$(INSTALL_PATH) and run lilo' 383 echo ' vdso_install - Install unstripped vdso.so to $$(INSTALL_MOD_PATH)/vdso' 384endef 385