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 -z norelro 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 51# 52# The Scalar Replacement of Aggregates (SRA) optimization pass in GCC 4.9 and 53# later may result in code being generated that handles signed short and signed 54# char struct members incorrectly. So disable it. 55# (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65932) 56# 57KBUILD_CFLAGS += $(call cc-option,-fno-ipa-sra) 58 59# This selects which instruction set is used. 60# Note that GCC does not numerically define an architecture version 61# macro, but instead defines a whole series of macros which makes 62# testing for a specific architecture or later rather impossible. 63arch-$(CONFIG_CPU_32v7M) =-D__LINUX_ARM_ARCH__=7 -march=armv7-m -Wa,-march=armv7-m 64arch-$(CONFIG_CPU_32v7) =-D__LINUX_ARM_ARCH__=7 $(call cc-option,-march=armv7-a,-march=armv5t -Wa$(comma)-march=armv7-a) 65arch-$(CONFIG_CPU_32v6) =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6,-march=armv5t -Wa$(comma)-march=armv6) 66# Only override the compiler option if ARMv6. The ARMv6K extensions are 67# always available in ARMv7 68ifeq ($(CONFIG_CPU_32v6),y) 69arch-$(CONFIG_CPU_32v6K) =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6k,-march=armv5t -Wa$(comma)-march=armv6k) 70endif 71arch-$(CONFIG_CPU_32v5) =-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t) 72arch-$(CONFIG_CPU_32v4T) =-D__LINUX_ARM_ARCH__=4 -march=armv4t 73arch-$(CONFIG_CPU_32v4) =-D__LINUX_ARM_ARCH__=4 -march=armv4 74arch-$(CONFIG_CPU_32v3) =-D__LINUX_ARM_ARCH__=3 -march=armv3m 75 76# Evaluate arch cc-option calls now 77arch-y := $(arch-y) 78 79# This selects how we optimise for the processor. 80tune-$(CONFIG_CPU_ARM7TDMI) =-mtune=arm7tdmi 81tune-$(CONFIG_CPU_ARM720T) =-mtune=arm7tdmi 82tune-$(CONFIG_CPU_ARM740T) =-mtune=arm7tdmi 83tune-$(CONFIG_CPU_ARM9TDMI) =-mtune=arm9tdmi 84tune-$(CONFIG_CPU_ARM940T) =-mtune=arm9tdmi 85tune-$(CONFIG_CPU_ARM946E) =$(call cc-option,-mtune=arm9e,-mtune=arm9tdmi) 86tune-$(CONFIG_CPU_ARM920T) =-mtune=arm9tdmi 87tune-$(CONFIG_CPU_ARM922T) =-mtune=arm9tdmi 88tune-$(CONFIG_CPU_ARM925T) =-mtune=arm9tdmi 89tune-$(CONFIG_CPU_ARM926T) =-mtune=arm9tdmi 90tune-$(CONFIG_CPU_FA526) =-mtune=arm9tdmi 91tune-$(CONFIG_CPU_SA110) =-mtune=strongarm110 92tune-$(CONFIG_CPU_SA1100) =-mtune=strongarm1100 93tune-$(CONFIG_CPU_XSCALE) =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale 94tune-$(CONFIG_CPU_XSC3) =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale 95tune-$(CONFIG_CPU_FEROCEON) =$(call cc-option,-mtune=marvell-f,-mtune=xscale) 96tune-$(CONFIG_CPU_V6) =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm) 97tune-$(CONFIG_CPU_V6K) =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm) 98 99# Evaluate tune cc-option calls now 100tune-y := $(tune-y) 101 102ifeq ($(CONFIG_AEABI),y) 103CFLAGS_ABI :=-mabi=aapcs-linux -mfpu=vfp 104else 105CFLAGS_ABI :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,) 106endif 107 108ifeq ($(CONFIG_ARM_UNWIND),y) 109CFLAGS_ABI +=-funwind-tables 110endif 111 112ifeq ($(CONFIG_CC_IS_CLANG),y) 113CFLAGS_ABI += -meabi gnu 114endif 115 116# Accept old syntax despite ".syntax unified" 117AFLAGS_NOWARN :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W) 118 119ifeq ($(CONFIG_THUMB2_KERNEL),y) 120CFLAGS_ISA :=-mthumb -Wa,-mimplicit-it=always $(AFLAGS_NOWARN) 121AFLAGS_ISA :=$(CFLAGS_ISA) -Wa$(comma)-mthumb 122else 123CFLAGS_ISA :=$(call cc-option,-marm,) $(AFLAGS_NOWARN) 124AFLAGS_ISA :=$(CFLAGS_ISA) 125endif 126 127# Need -Uarm for gcc < 3.x 128KBUILD_CFLAGS +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm 129KBUILD_AFLAGS +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float 130 131CHECKFLAGS += -D__arm__ 132 133#Default value 134head-y := arch/arm/kernel/head$(MMUEXT).o 135 136# Text offset. This list is sorted numerically by address in order to 137# provide a means to avoid/resolve conflicts in multi-arch kernels. 138# Note: the 32kB below this value is reserved for use by the kernel 139# during boot, and this offset is critical to the functioning of 140# kexec-tools. 141textofs-y := 0x00008000 142# We don't want the htc bootloader to corrupt kernel during resume 143textofs-$(CONFIG_PM_H1940) := 0x00108000 144# RTD1195 has Boot ROM at start of address space 145textofs-$(CONFIG_ARCH_REALTEK) := 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-$(CONFIG_ARCH_IPQ40XX) := 0x00208000 151textofs-$(CONFIG_ARCH_MSM8X60) := 0x00208000 152textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000 153textofs-$(CONFIG_ARCH_MESON) := 0x00208000 154textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000 155 156# Machine directory name. This list is sorted alphanumerically 157# by CONFIG_* macro name. 158machine-$(CONFIG_ARCH_ACTIONS) += actions 159machine-$(CONFIG_ARCH_ALPINE) += alpine 160machine-$(CONFIG_ARCH_ARTPEC) += artpec 161machine-$(CONFIG_ARCH_ASPEED) += aspeed 162machine-$(CONFIG_ARCH_AT91) += at91 163machine-$(CONFIG_ARCH_AXXIA) += axxia 164machine-$(CONFIG_ARCH_BCM) += bcm 165machine-$(CONFIG_ARCH_BERLIN) += berlin 166machine-$(CONFIG_ARCH_CLPS711X) += clps711x 167machine-$(CONFIG_ARCH_CNS3XXX) += cns3xxx 168machine-$(CONFIG_ARCH_DAVINCI) += davinci 169machine-$(CONFIG_ARCH_DIGICOLOR) += digicolor 170machine-$(CONFIG_ARCH_DOVE) += dove 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_IOP32X) += iop32x 179machine-$(CONFIG_ARCH_IXP4XX) += ixp4xx 180machine-$(CONFIG_ARCH_KEYSTONE) += keystone 181machine-$(CONFIG_ARCH_LPC18XX) += lpc18xx 182machine-$(CONFIG_ARCH_LPC32XX) += lpc32xx 183machine-$(CONFIG_ARCH_MESON) += meson 184machine-$(CONFIG_ARCH_MMP) += mmp 185machine-$(CONFIG_ARCH_MPS2) += vexpress 186machine-$(CONFIG_ARCH_MOXART) += moxart 187machine-$(CONFIG_ARCH_MV78XX0) += mv78xx0 188machine-$(CONFIG_ARCH_MVEBU) += mvebu 189machine-$(CONFIG_ARCH_MXC) += imx 190machine-$(CONFIG_ARCH_MEDIATEK) += mediatek 191machine-$(CONFIG_ARCH_MILBEAUT) += milbeaut 192machine-$(CONFIG_ARCH_MXS) += mxs 193machine-$(CONFIG_ARCH_MSTARV7) += mstar 194machine-$(CONFIG_ARCH_NOMADIK) += nomadik 195machine-$(CONFIG_ARCH_NPCM) += npcm 196machine-$(CONFIG_ARCH_NSPIRE) += nspire 197machine-$(CONFIG_ARCH_OXNAS) += oxnas 198machine-$(CONFIG_ARCH_OMAP1) += omap1 199machine-$(CONFIG_ARCH_OMAP2PLUS) += omap2 200machine-$(CONFIG_ARCH_ORION5X) += orion5x 201machine-$(CONFIG_ARCH_PXA) += pxa 202machine-$(CONFIG_ARCH_QCOM) += qcom 203machine-$(CONFIG_ARCH_RDA) += rda 204machine-$(CONFIG_ARCH_REALTEK) += realtek 205machine-$(CONFIG_ARCH_REALVIEW) += realview 206machine-$(CONFIG_ARCH_ROCKCHIP) += rockchip 207machine-$(CONFIG_ARCH_RPC) += rpc 208machine-$(CONFIG_PLAT_SAMSUNG) += s3c 209machine-$(CONFIG_ARCH_S5PV210) += s5pv210 210machine-$(CONFIG_ARCH_SA1100) += sa1100 211machine-$(CONFIG_ARCH_RENESAS) += shmobile 212machine-$(CONFIG_ARCH_SOCFPGA) += socfpga 213machine-$(CONFIG_ARCH_STI) += sti 214machine-$(CONFIG_ARCH_STM32) += stm32 215machine-$(CONFIG_ARCH_SUNXI) += sunxi 216machine-$(CONFIG_ARCH_TEGRA) += tegra 217machine-$(CONFIG_ARCH_U8500) += ux500 218machine-$(CONFIG_ARCH_VERSATILE) += versatile 219machine-$(CONFIG_ARCH_VEXPRESS) += vexpress 220machine-$(CONFIG_ARCH_VT8500) += vt8500 221machine-$(CONFIG_ARCH_ZYNQ) += zynq 222machine-$(CONFIG_PLAT_SPEAR) += spear 223 224# Platform directory name. This list is sorted alphanumerically 225# by CONFIG_* macro name. 226plat-$(CONFIG_ARCH_OMAP) += omap 227plat-$(CONFIG_PLAT_ORION) += orion 228plat-$(CONFIG_PLAT_PXA) += pxa 229plat-$(CONFIG_PLAT_VERSATILE) += versatile 230 231# The byte offset of the kernel image in RAM from the start of RAM. 232TEXT_OFFSET := $(textofs-y) 233 234# The first directory contains additional information for the boot setup code 235ifneq ($(machine-y),) 236MACHINE := arch/arm/mach-$(word 1,$(machine-y))/ 237else 238MACHINE := 239endif 240ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y) 241MACHINE := 242endif 243 244machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y)) 245platdirs := $(patsubst %,arch/arm/plat-%/,$(sort $(plat-y))) 246 247ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y) 248ifneq ($(CONFIG_ARM_SINGLE_ARMV7M),y) 249KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs)) 250endif 251endif 252 253export TEXT_OFFSET GZFLAGS MMUEXT 254 255core-y += arch/arm/ 256# If we have a machine-specific directory, then include it in the build. 257core-y += $(machdirs) $(platdirs) 258 259# For cleaning 260core- += $(patsubst %,arch/arm/mach-%/, $(machine-)) 261core- += $(patsubst %,arch/arm/plat-%/, $(plat-)) 262 263libs-y := arch/arm/lib/ $(libs-y) 264 265# Default target when executing plain make 266boot := arch/arm/boot 267ifeq ($(CONFIG_XIP_KERNEL),y) 268KBUILD_IMAGE := $(boot)/xipImage 269else 270KBUILD_IMAGE := $(boot)/zImage 271endif 272 273ifeq ($(CONFIG_STACKPROTECTOR_PER_TASK),y) 274prepare: stack_protector_prepare 275stack_protector_prepare: prepare0 276 $(eval SSP_PLUGIN_CFLAGS := \ 277 -fplugin-arg-arm_ssp_per_task_plugin-tso=$(shell \ 278 awk '{if ($$2 == "THREAD_SZ_ORDER") print $$3;}'\ 279 include/generated/asm-offsets.h) \ 280 -fplugin-arg-arm_ssp_per_task_plugin-offset=$(shell \ 281 awk '{if ($$2 == "TI_STACK_CANARY") print $$3;}'\ 282 include/generated/asm-offsets.h)) 283 $(eval KBUILD_CFLAGS += $(SSP_PLUGIN_CFLAGS)) 284 $(eval GCC_PLUGINS_CFLAGS += $(SSP_PLUGIN_CFLAGS)) 285endif 286 287all: $(notdir $(KBUILD_IMAGE)) 288 289 290archheaders: 291 $(Q)$(MAKE) $(build)=arch/arm/tools uapi 292 293archprepare: 294 $(Q)$(MAKE) $(build)=arch/arm/tools kapi 295 296# Convert bzImage to zImage 297bzImage: zImage 298 299BOOT_TARGETS = zImage Image xipImage bootpImage uImage 300INSTALL_TARGETS = zinstall uinstall install 301 302PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS) 303 304bootpImage uImage: zImage 305zImage: Image 306 307$(BOOT_TARGETS): vmlinux 308 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@ 309 @$(kecho) ' Kernel: $(boot)/$@ is ready' 310 311$(INSTALL_TARGETS): 312 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@ 313 314PHONY += vdso_install 315vdso_install: 316ifeq ($(CONFIG_VDSO),y) 317 $(Q)$(MAKE) $(build)=arch/arm/vdso $@ 318endif 319 320# We use MRPROPER_FILES and CLEAN_FILES now 321archclean: 322 $(Q)$(MAKE) $(clean)=$(boot) 323 324# My testing targets (bypasses dependencies) 325bp:; $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage 326 327 328define archhelp 329 echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)' 330 echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)' 331 echo '* xipImage - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)' 332 echo ' uImage - U-Boot wrapped zImage' 333 echo ' bootpImage - Combined zImage and initial RAM disk' 334 echo ' (supply initrd image via make variable INITRD=<path>)' 335 echo ' install - Install uncompressed kernel' 336 echo ' zinstall - Install compressed kernel' 337 echo ' uinstall - Install U-Boot wrapped compressed kernel' 338 echo ' Install using (your) ~/bin/$(INSTALLKERNEL) or' 339 echo ' (distribution) /sbin/$(INSTALLKERNEL) or' 340 echo ' install to $$(INSTALL_PATH) and run lilo' 341 echo ' vdso_install - Install unstripped vdso.so to $$(INSTALL_MOD_PATH)/vdso' 342endef 343