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 19# We never want expected sections to be placed heuristically by the 20# linker. All sections should be explicitly named in the linker script. 21LDFLAGS_vmlinux += $(call ld-option, --orphan-handling=warn) 22 23ifeq ($(CONFIG_ARM_MODULE_PLTS),y) 24KBUILD_LDS_MODULE += $(srctree)/arch/arm/kernel/module.lds 25endif 26 27GZFLAGS :=-9 28#KBUILD_CFLAGS +=-pipe 29 30# Never generate .eh_frame 31KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm) 32 33# This should work on most of the modern platforms 34KBUILD_DEFCONFIG := multi_v7_defconfig 35 36# defines filename extension depending memory management type. 37ifeq ($(CONFIG_MMU),) 38MMUEXT := -nommu 39KBUILD_CFLAGS += $(call cc-option,-mno-unaligned-access) 40endif 41 42ifeq ($(CONFIG_FRAME_POINTER),y) 43KBUILD_CFLAGS +=-fno-omit-frame-pointer 44ifeq ($(CONFIG_CC_IS_GCC),y) 45KBUILD_CFLAGS += -mapcs -mno-sched-prolog 46endif 47endif 48 49ifeq ($(CONFIG_CPU_BIG_ENDIAN),y) 50KBUILD_CPPFLAGS += -mbig-endian 51CHECKFLAGS += -D__ARMEB__ 52KBUILD_LDFLAGS += -EB 53else 54KBUILD_CPPFLAGS += -mlittle-endian 55CHECKFLAGS += -D__ARMEL__ 56KBUILD_LDFLAGS += -EL 57endif 58 59# 60# The Scalar Replacement of Aggregates (SRA) optimization pass in GCC 4.9 and 61# later may result in code being generated that handles signed short and signed 62# char struct members incorrectly. So disable it. 63# (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65932) 64# 65KBUILD_CFLAGS += $(call cc-option,-fno-ipa-sra) 66 67# This selects which instruction set is used. 68# Note that GCC does not numerically define an architecture version 69# macro, but instead defines a whole series of macros which makes 70# testing for a specific architecture or later rather impossible. 71arch-$(CONFIG_CPU_32v7M) =-D__LINUX_ARM_ARCH__=7 -march=armv7-m -Wa,-march=armv7-m 72arch-$(CONFIG_CPU_32v7) =-D__LINUX_ARM_ARCH__=7 $(call cc-option,-march=armv7-a,-march=armv5t -Wa$(comma)-march=armv7-a) 73arch-$(CONFIG_CPU_32v6) =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6,-march=armv5t -Wa$(comma)-march=armv6) 74# Only override the compiler option if ARMv6. The ARMv6K extensions are 75# always available in ARMv7 76ifeq ($(CONFIG_CPU_32v6),y) 77arch-$(CONFIG_CPU_32v6K) =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6k,-march=armv5t -Wa$(comma)-march=armv6k) 78endif 79arch-$(CONFIG_CPU_32v5) =-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t) 80arch-$(CONFIG_CPU_32v4T) =-D__LINUX_ARM_ARCH__=4 -march=armv4t 81arch-$(CONFIG_CPU_32v4) =-D__LINUX_ARM_ARCH__=4 -march=armv4 82arch-$(CONFIG_CPU_32v3) =-D__LINUX_ARM_ARCH__=3 -march=armv3m 83 84# Evaluate arch cc-option calls now 85arch-y := $(arch-y) 86 87# This selects how we optimise for the processor. 88tune-$(CONFIG_CPU_ARM7TDMI) =-mtune=arm7tdmi 89tune-$(CONFIG_CPU_ARM720T) =-mtune=arm7tdmi 90tune-$(CONFIG_CPU_ARM740T) =-mtune=arm7tdmi 91tune-$(CONFIG_CPU_ARM9TDMI) =-mtune=arm9tdmi 92tune-$(CONFIG_CPU_ARM940T) =-mtune=arm9tdmi 93tune-$(CONFIG_CPU_ARM946E) =$(call cc-option,-mtune=arm9e,-mtune=arm9tdmi) 94tune-$(CONFIG_CPU_ARM920T) =-mtune=arm9tdmi 95tune-$(CONFIG_CPU_ARM922T) =-mtune=arm9tdmi 96tune-$(CONFIG_CPU_ARM925T) =-mtune=arm9tdmi 97tune-$(CONFIG_CPU_ARM926T) =-mtune=arm9tdmi 98tune-$(CONFIG_CPU_FA526) =-mtune=arm9tdmi 99tune-$(CONFIG_CPU_SA110) =-mtune=strongarm110 100tune-$(CONFIG_CPU_SA1100) =-mtune=strongarm1100 101tune-$(CONFIG_CPU_XSCALE) =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale 102tune-$(CONFIG_CPU_XSC3) =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale 103tune-$(CONFIG_CPU_FEROCEON) =$(call cc-option,-mtune=marvell-f,-mtune=xscale) 104tune-$(CONFIG_CPU_V6) =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm) 105tune-$(CONFIG_CPU_V6K) =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm) 106 107# Evaluate tune cc-option calls now 108tune-y := $(tune-y) 109 110ifeq ($(CONFIG_AEABI),y) 111CFLAGS_ABI :=-mabi=aapcs-linux -mfpu=vfp 112else 113CFLAGS_ABI :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,) 114endif 115 116ifeq ($(CONFIG_ARM_UNWIND),y) 117CFLAGS_ABI +=-funwind-tables 118endif 119 120ifeq ($(CONFIG_CC_IS_CLANG),y) 121CFLAGS_ABI += -meabi gnu 122endif 123 124# Accept old syntax despite ".syntax unified" 125AFLAGS_NOWARN :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W) 126 127ifeq ($(CONFIG_THUMB2_KERNEL),y) 128CFLAGS_ISA :=-mthumb -Wa,-mimplicit-it=always $(AFLAGS_NOWARN) 129AFLAGS_ISA :=$(CFLAGS_ISA) -Wa$(comma)-mthumb 130else 131CFLAGS_ISA :=$(call cc-option,-marm,) $(AFLAGS_NOWARN) 132AFLAGS_ISA :=$(CFLAGS_ISA) 133endif 134 135# Need -Uarm for gcc < 3.x 136KBUILD_CFLAGS +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm 137KBUILD_AFLAGS +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float 138 139CHECKFLAGS += -D__arm__ 140 141#Default value 142head-y := arch/arm/kernel/head$(MMUEXT).o 143 144# Text offset. This list is sorted numerically by address in order to 145# provide a means to avoid/resolve conflicts in multi-arch kernels. 146textofs-y := 0x00008000 147# We don't want the htc bootloader to corrupt kernel during resume 148textofs-$(CONFIG_PM_H1940) := 0x00108000 149# RTD1195 has Boot ROM at start of address space 150textofs-$(CONFIG_ARCH_REALTEK) := 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-$(CONFIG_ARCH_IPQ40XX) := 0x00208000 156textofs-$(CONFIG_ARCH_MSM8X60) := 0x00208000 157textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000 158textofs-$(CONFIG_ARCH_MESON) := 0x00208000 159textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000 160 161# Machine directory name. This list is sorted alphanumerically 162# by CONFIG_* macro name. 163machine-$(CONFIG_ARCH_ACTIONS) += actions 164machine-$(CONFIG_ARCH_ALPINE) += alpine 165machine-$(CONFIG_ARCH_ARTPEC) += artpec 166machine-$(CONFIG_ARCH_ASPEED) += aspeed 167machine-$(CONFIG_ARCH_AT91) += at91 168machine-$(CONFIG_ARCH_AXXIA) += axxia 169machine-$(CONFIG_ARCH_BCM) += bcm 170machine-$(CONFIG_ARCH_BERLIN) += berlin 171machine-$(CONFIG_ARCH_CLPS711X) += clps711x 172machine-$(CONFIG_ARCH_CNS3XXX) += cns3xxx 173machine-$(CONFIG_ARCH_DAVINCI) += davinci 174machine-$(CONFIG_ARCH_DIGICOLOR) += digicolor 175machine-$(CONFIG_ARCH_DOVE) += dove 176machine-$(CONFIG_ARCH_EBSA110) += ebsa110 177machine-$(CONFIG_ARCH_EFM32) += efm32 178machine-$(CONFIG_ARCH_EP93XX) += ep93xx 179machine-$(CONFIG_ARCH_EXYNOS) += exynos 180machine-$(CONFIG_ARCH_FOOTBRIDGE) += footbridge 181machine-$(CONFIG_ARCH_GEMINI) += gemini 182machine-$(CONFIG_ARCH_HIGHBANK) += highbank 183machine-$(CONFIG_ARCH_HISI) += hisi 184machine-$(CONFIG_ARCH_INTEGRATOR) += integrator 185machine-$(CONFIG_ARCH_IOP32X) += iop32x 186machine-$(CONFIG_ARCH_IXP4XX) += ixp4xx 187machine-$(CONFIG_ARCH_KEYSTONE) += keystone 188machine-$(CONFIG_ARCH_LPC18XX) += lpc18xx 189machine-$(CONFIG_ARCH_LPC32XX) += lpc32xx 190machine-$(CONFIG_ARCH_MESON) += meson 191machine-$(CONFIG_ARCH_MMP) += mmp 192machine-$(CONFIG_ARCH_MPS2) += vexpress 193machine-$(CONFIG_ARCH_MOXART) += moxart 194machine-$(CONFIG_ARCH_MV78XX0) += mv78xx0 195machine-$(CONFIG_ARCH_MVEBU) += mvebu 196machine-$(CONFIG_ARCH_MXC) += imx 197machine-$(CONFIG_ARCH_MEDIATEK) += mediatek 198machine-$(CONFIG_ARCH_MILBEAUT) += milbeaut 199machine-$(CONFIG_ARCH_MXS) += mxs 200machine-$(CONFIG_ARCH_MSTARV7) += mstar 201machine-$(CONFIG_ARCH_NOMADIK) += nomadik 202machine-$(CONFIG_ARCH_NPCM) += npcm 203machine-$(CONFIG_ARCH_NSPIRE) += nspire 204machine-$(CONFIG_ARCH_OXNAS) += oxnas 205machine-$(CONFIG_ARCH_OMAP1) += omap1 206machine-$(CONFIG_ARCH_OMAP2PLUS) += omap2 207machine-$(CONFIG_ARCH_ORION5X) += orion5x 208machine-$(CONFIG_ARCH_PICOXCELL) += picoxcell 209machine-$(CONFIG_ARCH_PXA) += pxa 210machine-$(CONFIG_ARCH_QCOM) += qcom 211machine-$(CONFIG_ARCH_RDA) += rda 212machine-$(CONFIG_ARCH_REALTEK) += realtek 213machine-$(CONFIG_ARCH_REALVIEW) += realview 214machine-$(CONFIG_ARCH_ROCKCHIP) += rockchip 215machine-$(CONFIG_ARCH_RPC) += rpc 216machine-$(CONFIG_ARCH_S3C24XX) += s3c24xx 217machine-$(CONFIG_ARCH_S3C64XX) += s3c64xx 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-$(CONFIG_ARCH_EXYNOS) += samsung 240plat-$(CONFIG_ARCH_OMAP) += omap 241plat-$(CONFIG_ARCH_S3C64XX) += samsung 242plat-$(CONFIG_ARCH_S5PV210) += samsung 243plat-$(CONFIG_PLAT_ORION) += orion 244plat-$(CONFIG_PLAT_PXA) += pxa 245plat-$(CONFIG_PLAT_S3C24XX) += samsung 246plat-$(CONFIG_PLAT_VERSATILE) += versatile 247 248ifeq ($(CONFIG_ARCH_EBSA110),y) 249# This is what happens if you forget the IOCS16 line. 250# PCMCIA cards stop working. 251CFLAGS_3c589_cs.o :=-DISA_SIXTEEN_BIT_PERIPHERAL 252export CFLAGS_3c589_cs.o 253endif 254 255# The byte offset of the kernel image in RAM from the start of RAM. 256TEXT_OFFSET := $(textofs-y) 257 258# The first directory contains additional information for the boot setup code 259ifneq ($(machine-y),) 260MACHINE := arch/arm/mach-$(word 1,$(machine-y))/ 261else 262MACHINE := 263endif 264ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y) 265MACHINE := 266endif 267 268machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y)) 269platdirs := $(patsubst %,arch/arm/plat-%/,$(sort $(plat-y))) 270 271ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y) 272ifneq ($(CONFIG_ARM_SINGLE_ARMV7M),y) 273KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs)) 274endif 275endif 276 277export TEXT_OFFSET GZFLAGS MMUEXT 278 279core-y += arch/arm/ 280# If we have a machine-specific directory, then include it in the build. 281core-y += $(machdirs) $(platdirs) 282 283# For cleaning 284core- += $(patsubst %,arch/arm/mach-%/, $(machine-)) 285core- += $(patsubst %,arch/arm/plat-%/, $(plat-)) 286 287drivers-$(CONFIG_OPROFILE) += arch/arm/oprofile/ 288 289libs-y := arch/arm/lib/ $(libs-y) 290 291# Default target when executing plain make 292boot := arch/arm/boot 293ifeq ($(CONFIG_XIP_KERNEL),y) 294KBUILD_IMAGE := $(boot)/xipImage 295else 296KBUILD_IMAGE := $(boot)/zImage 297endif 298 299ifeq ($(CONFIG_STACKPROTECTOR_PER_TASK),y) 300prepare: stack_protector_prepare 301stack_protector_prepare: prepare0 302 $(eval SSP_PLUGIN_CFLAGS := \ 303 -fplugin-arg-arm_ssp_per_task_plugin-tso=$(shell \ 304 awk '{if ($$2 == "THREAD_SZ_ORDER") print $$3;}'\ 305 include/generated/asm-offsets.h) \ 306 -fplugin-arg-arm_ssp_per_task_plugin-offset=$(shell \ 307 awk '{if ($$2 == "TI_STACK_CANARY") print $$3;}'\ 308 include/generated/asm-offsets.h)) 309 $(eval KBUILD_CFLAGS += $(SSP_PLUGIN_CFLAGS)) 310 $(eval GCC_PLUGINS_CFLAGS += $(SSP_PLUGIN_CFLAGS)) 311endif 312 313all: $(notdir $(KBUILD_IMAGE)) 314 315 316archheaders: 317 $(Q)$(MAKE) $(build)=arch/arm/tools uapi 318 319archprepare: 320 $(Q)$(MAKE) $(build)=arch/arm/tools kapi 321 322# Convert bzImage to zImage 323bzImage: zImage 324 325BOOT_TARGETS = zImage Image xipImage bootpImage uImage 326INSTALL_TARGETS = zinstall uinstall install 327 328PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS) 329 330bootpImage uImage: zImage 331zImage: Image 332 333$(BOOT_TARGETS): vmlinux 334 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@ 335 @$(kecho) ' Kernel: $(boot)/$@ is ready' 336 337$(INSTALL_TARGETS): 338 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@ 339 340PHONY += vdso_install 341vdso_install: 342ifeq ($(CONFIG_VDSO),y) 343 $(Q)$(MAKE) $(build)=arch/arm/vdso $@ 344endif 345 346# We use MRPROPER_FILES and CLEAN_FILES now 347archclean: 348 $(Q)$(MAKE) $(clean)=$(boot) 349 350# My testing targets (bypasses dependencies) 351bp:; $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage 352 353 354define archhelp 355 echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)' 356 echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)' 357 echo '* xipImage - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)' 358 echo ' uImage - U-Boot wrapped zImage' 359 echo ' bootpImage - Combined zImage and initial RAM disk' 360 echo ' (supply initrd image via make variable INITRD=<path>)' 361 echo ' install - Install uncompressed kernel' 362 echo ' zinstall - Install compressed kernel' 363 echo ' uinstall - Install U-Boot wrapped compressed kernel' 364 echo ' Install using (your) ~/bin/$(INSTALLKERNEL) or' 365 echo ' (distribution) /sbin/$(INSTALLKERNEL) or' 366 echo ' install to $$(INSTALL_PATH) and run lilo' 367 echo ' vdso_install - Install unstripped vdso.so to $$(INSTALL_MOD_PATH)/vdso' 368endef 369