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 ($(CONFIG_CPU_ENDIAN_BE8),y) 18LDFLAGS_vmlinux += --be8 19LDFLAGS_MODULE += --be8 20endif 21 22ifeq ($(CONFIG_ARM_MODULE_PLTS),y) 23LDFLAGS_MODULE += -T $(srctree)/arch/arm/kernel/module.lds 24endif 25 26OBJCOPYFLAGS :=-O binary -R .comment -S 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 -mapcs -mno-sched-prolog 44endif 45 46ifeq ($(CONFIG_CPU_BIG_ENDIAN),y) 47KBUILD_CPPFLAGS += -mbig-endian 48AS += -EB 49LD += -EB 50else 51KBUILD_CPPFLAGS += -mlittle-endian 52AS += -EL 53LD += -EL 54endif 55 56# 57# The Scalar Replacement of Aggregates (SRA) optimization pass in GCC 4.9 and 58# later may result in code being generated that handles signed short and signed 59# char struct members incorrectly. So disable it. 60# (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65932) 61# 62KBUILD_CFLAGS += $(call cc-option,-fno-ipa-sra) 63 64# This selects which instruction set is used. 65# Note that GCC does not numerically define an architecture version 66# macro, but instead defines a whole series of macros which makes 67# testing for a specific architecture or later rather impossible. 68arch-$(CONFIG_CPU_32v7M) =-D__LINUX_ARM_ARCH__=7 -march=armv7-m -Wa,-march=armv7-m 69arch-$(CONFIG_CPU_32v7) =-D__LINUX_ARM_ARCH__=7 $(call cc-option,-march=armv7-a,-march=armv5t -Wa$(comma)-march=armv7-a) 70arch-$(CONFIG_CPU_32v6) =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6,-march=armv5t -Wa$(comma)-march=armv6) 71# Only override the compiler option if ARMv6. The ARMv6K extensions are 72# always available in ARMv7 73ifeq ($(CONFIG_CPU_32v6),y) 74arch-$(CONFIG_CPU_32v6K) =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6k,-march=armv5t -Wa$(comma)-march=armv6k) 75endif 76arch-$(CONFIG_CPU_32v5) =-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t) 77arch-$(CONFIG_CPU_32v4T) =-D__LINUX_ARM_ARCH__=4 -march=armv4t 78arch-$(CONFIG_CPU_32v4) =-D__LINUX_ARM_ARCH__=4 -march=armv4 79arch-$(CONFIG_CPU_32v3) =-D__LINUX_ARM_ARCH__=3 -march=armv3 80 81# Evaluate arch cc-option calls now 82arch-y := $(arch-y) 83 84# This selects how we optimise for the processor. 85tune-$(CONFIG_CPU_ARM7TDMI) =-mtune=arm7tdmi 86tune-$(CONFIG_CPU_ARM720T) =-mtune=arm7tdmi 87tune-$(CONFIG_CPU_ARM740T) =-mtune=arm7tdmi 88tune-$(CONFIG_CPU_ARM9TDMI) =-mtune=arm9tdmi 89tune-$(CONFIG_CPU_ARM940T) =-mtune=arm9tdmi 90tune-$(CONFIG_CPU_ARM946E) =$(call cc-option,-mtune=arm9e,-mtune=arm9tdmi) 91tune-$(CONFIG_CPU_ARM920T) =-mtune=arm9tdmi 92tune-$(CONFIG_CPU_ARM922T) =-mtune=arm9tdmi 93tune-$(CONFIG_CPU_ARM925T) =-mtune=arm9tdmi 94tune-$(CONFIG_CPU_ARM926T) =-mtune=arm9tdmi 95tune-$(CONFIG_CPU_FA526) =-mtune=arm9tdmi 96tune-$(CONFIG_CPU_SA110) =-mtune=strongarm110 97tune-$(CONFIG_CPU_SA1100) =-mtune=strongarm1100 98tune-$(CONFIG_CPU_XSCALE) =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale 99tune-$(CONFIG_CPU_XSC3) =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale 100tune-$(CONFIG_CPU_FEROCEON) =$(call cc-option,-mtune=marvell-f,-mtune=xscale) 101tune-$(CONFIG_CPU_V6) =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm) 102tune-$(CONFIG_CPU_V6K) =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm) 103 104# Evaluate tune cc-option calls now 105tune-y := $(tune-y) 106 107ifeq ($(CONFIG_AEABI),y) 108CFLAGS_ABI :=-mabi=aapcs-linux -mno-thumb-interwork -mfpu=vfp 109else 110CFLAGS_ABI :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,) 111endif 112 113ifeq ($(CONFIG_ARM_UNWIND),y) 114CFLAGS_ABI +=-funwind-tables 115endif 116 117ifeq ($(CONFIG_THUMB2_KERNEL),y) 118AFLAGS_AUTOIT :=$(call as-option,-Wa$(comma)-mimplicit-it=always,-Wa$(comma)-mauto-it) 119AFLAGS_NOWARN :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W) 120CFLAGS_ISA :=-mthumb $(AFLAGS_AUTOIT) $(AFLAGS_NOWARN) 121AFLAGS_ISA :=$(CFLAGS_ISA) -Wa$(comma)-mthumb 122# Work around buggy relocation from gas if requested: 123ifeq ($(CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11),y) 124CFLAGS_MODULE +=-fno-optimize-sibling-calls 125endif 126else 127CFLAGS_ISA :=$(call cc-option,-marm,) 128AFLAGS_ISA :=$(CFLAGS_ISA) 129endif 130 131# Need -Uarm for gcc < 3.x 132KBUILD_CFLAGS +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm 133KBUILD_AFLAGS +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float 134 135CHECKFLAGS += -D__arm__ 136 137#Default value 138head-y := arch/arm/kernel/head$(MMUEXT).o 139 140# Text offset. This list is sorted numerically by address in order to 141# provide a means to avoid/resolve conflicts in multi-arch kernels. 142textofs-y := 0x00008000 143textofs-$(CONFIG_ARCH_CLPS711X) := 0x00028000 144# We don't want the htc bootloader to corrupt kernel during resume 145textofs-$(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-$(CONFIG_ARCH_AXXIA) := 0x00308000 153 154# Machine directory name. This list is sorted alphanumerically 155# by CONFIG_* macro name. 156machine-$(CONFIG_ARCH_ALPINE) += alpine 157machine-$(CONFIG_ARCH_AT91) += at91 158machine-$(CONFIG_ARCH_AXXIA) += axxia 159machine-$(CONFIG_ARCH_BCM) += bcm 160machine-$(CONFIG_ARCH_BERLIN) += berlin 161machine-$(CONFIG_ARCH_CLPS711X) += clps711x 162machine-$(CONFIG_ARCH_CNS3XXX) += cns3xxx 163machine-$(CONFIG_ARCH_DAVINCI) += davinci 164machine-$(CONFIG_ARCH_DIGICOLOR) += digicolor 165machine-$(CONFIG_ARCH_DOVE) += dove 166machine-$(CONFIG_ARCH_EBSA110) += ebsa110 167machine-$(CONFIG_ARCH_EFM32) += efm32 168machine-$(CONFIG_ARCH_EP93XX) += ep93xx 169machine-$(CONFIG_ARCH_EXYNOS) += exynos 170machine-$(CONFIG_ARCH_FOOTBRIDGE) += footbridge 171machine-$(CONFIG_ARCH_GEMINI) += gemini 172machine-$(CONFIG_ARCH_HIGHBANK) += highbank 173machine-$(CONFIG_ARCH_HISI) += hisi 174machine-$(CONFIG_ARCH_INTEGRATOR) += integrator 175machine-$(CONFIG_ARCH_IOP13XX) += iop13xx 176machine-$(CONFIG_ARCH_IOP32X) += iop32x 177machine-$(CONFIG_ARCH_IOP33X) += iop33x 178machine-$(CONFIG_ARCH_IXP4XX) += ixp4xx 179machine-$(CONFIG_ARCH_KEYSTONE) += keystone 180machine-$(CONFIG_ARCH_KS8695) += ks8695 181machine-$(CONFIG_ARCH_LPC18XX) += lpc18xx 182machine-$(CONFIG_ARCH_LPC32XX) += lpc32xx 183machine-$(CONFIG_ARCH_MESON) += meson 184machine-$(CONFIG_ARCH_MMP) += mmp 185machine-$(CONFIG_ARCH_MOXART) += moxart 186machine-$(CONFIG_ARCH_MV78XX0) += mv78xx0 187machine-$(CONFIG_ARCH_MVEBU) += mvebu 188machine-$(CONFIG_ARCH_MXC) += imx 189machine-$(CONFIG_ARCH_MEDIATEK) += mediatek 190machine-$(CONFIG_ARCH_MXS) += mxs 191machine-$(CONFIG_ARCH_NETX) += netx 192machine-$(CONFIG_ARCH_NOMADIK) += nomadik 193machine-$(CONFIG_ARCH_NSPIRE) += nspire 194machine-$(CONFIG_ARCH_OMAP1) += omap1 195machine-$(CONFIG_ARCH_OMAP2PLUS) += omap2 196machine-$(CONFIG_ARCH_ORION5X) += orion5x 197machine-$(CONFIG_ARCH_PICOXCELL) += picoxcell 198machine-$(CONFIG_ARCH_PXA) += pxa 199machine-$(CONFIG_ARCH_QCOM) += qcom 200machine-$(CONFIG_ARCH_REALVIEW) += realview 201machine-$(CONFIG_ARCH_ROCKCHIP) += rockchip 202machine-$(CONFIG_ARCH_RPC) += rpc 203machine-$(CONFIG_ARCH_S3C24XX) += s3c24xx 204machine-$(CONFIG_ARCH_S3C64XX) += s3c64xx 205machine-$(CONFIG_ARCH_S5PV210) += s5pv210 206machine-$(CONFIG_ARCH_SA1100) += sa1100 207machine-$(CONFIG_ARCH_SHMOBILE) += shmobile 208machine-$(CONFIG_ARCH_SIRF) += prima2 209machine-$(CONFIG_ARCH_SOCFPGA) += socfpga 210machine-$(CONFIG_ARCH_STI) += sti 211machine-$(CONFIG_ARCH_STM32) += stm32 212machine-$(CONFIG_ARCH_SUNXI) += sunxi 213machine-$(CONFIG_ARCH_TANGO) += tango 214machine-$(CONFIG_ARCH_TEGRA) += tegra 215machine-$(CONFIG_ARCH_U300) += u300 216machine-$(CONFIG_ARCH_U8500) += ux500 217machine-$(CONFIG_ARCH_UNIPHIER) += uniphier 218machine-$(CONFIG_ARCH_VERSATILE) += versatile 219machine-$(CONFIG_ARCH_VEXPRESS) += vexpress 220machine-$(CONFIG_ARCH_VT8500) += vt8500 221machine-$(CONFIG_ARCH_W90X900) += w90x900 222machine-$(CONFIG_ARCH_ZX) += zx 223machine-$(CONFIG_ARCH_ZYNQ) += zynq 224machine-$(CONFIG_PLAT_SPEAR) += spear 225 226# Platform directory name. This list is sorted alphanumerically 227# by CONFIG_* macro name. 228plat-$(CONFIG_ARCH_EXYNOS) += samsung 229plat-$(CONFIG_ARCH_OMAP) += omap 230plat-$(CONFIG_ARCH_S3C64XX) += samsung 231plat-$(CONFIG_ARCH_S5PV210) += samsung 232plat-$(CONFIG_PLAT_IOP) += iop 233plat-$(CONFIG_PLAT_ORION) += orion 234plat-$(CONFIG_PLAT_PXA) += pxa 235plat-$(CONFIG_PLAT_S3C24XX) += samsung 236plat-$(CONFIG_PLAT_VERSATILE) += versatile 237 238ifeq ($(CONFIG_ARCH_EBSA110),y) 239# This is what happens if you forget the IOCS16 line. 240# PCMCIA cards stop working. 241CFLAGS_3c589_cs.o :=-DISA_SIXTEEN_BIT_PERIPHERAL 242export CFLAGS_3c589_cs.o 243endif 244 245# The byte offset of the kernel image in RAM from the start of RAM. 246TEXT_OFFSET := $(textofs-y) 247 248# The first directory contains additional information for the boot setup code 249ifneq ($(machine-y),) 250MACHINE := arch/arm/mach-$(word 1,$(machine-y))/ 251else 252MACHINE := 253endif 254ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y) 255MACHINE := 256endif 257 258machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y)) 259platdirs := $(patsubst %,arch/arm/plat-%/,$(sort $(plat-y))) 260 261ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y) 262ifeq ($(KBUILD_SRC),) 263KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(machdirs) $(platdirs)) 264else 265KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs)) 266endif 267endif 268 269export TEXT_OFFSET GZFLAGS MMUEXT 270 271# Do we have FASTFPE? 272FASTFPE :=arch/arm/fastfpe 273ifeq ($(FASTFPE),$(wildcard $(FASTFPE))) 274FASTFPE_OBJ :=$(FASTFPE)/ 275endif 276 277core-$(CONFIG_FPE_NWFPE) += arch/arm/nwfpe/ 278core-$(CONFIG_FPE_FASTFPE) += $(FASTFPE_OBJ) 279core-$(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 += arch/arm/firmware/ 290core-y += $(machdirs) $(platdirs) 291 292drivers-$(CONFIG_OPROFILE) += arch/arm/oprofile/ 293 294libs-y := arch/arm/lib/ $(libs-y) 295 296# Default target when executing plain make 297ifeq ($(CONFIG_XIP_KERNEL),y) 298KBUILD_IMAGE := xipImage 299else 300KBUILD_IMAGE := zImage 301endif 302 303# Build the DT binary blobs if we have OF configured 304ifeq ($(CONFIG_USE_OF),y) 305KBUILD_DTBS := dtbs 306endif 307 308all: $(KBUILD_IMAGE) $(KBUILD_DTBS) 309 310boot := arch/arm/boot 311 312archprepare: 313 $(Q)$(MAKE) $(build)=arch/arm/tools include/generated/mach-types.h 314 315# Convert bzImage to zImage 316bzImage: zImage 317 318BOOT_TARGETS = zImage Image xipImage bootpImage uImage 319INSTALL_TARGETS = zinstall uinstall install 320 321PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS) 322 323bootpImage uImage: zImage 324zImage: Image 325 326$(BOOT_TARGETS): vmlinux 327 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@ 328 329$(INSTALL_TARGETS): 330 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@ 331 332%.dtb: | scripts 333 $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@ 334 335PHONY += dtbs dtbs_install 336 337dtbs: prepare scripts 338 $(Q)$(MAKE) $(build)=$(boot)/dts 339 340dtbs_install: 341 $(Q)$(MAKE) $(dtbinst)=$(boot)/dts 342 343PHONY += vdso_install 344vdso_install: 345ifeq ($(CONFIG_VDSO),y) 346 $(Q)$(MAKE) $(build)=arch/arm/vdso $@ 347endif 348 349# We use MRPROPER_FILES and CLEAN_FILES now 350archclean: 351 $(Q)$(MAKE) $(clean)=$(boot) 352 353# My testing targets (bypasses dependencies) 354bp:; $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage 355i zi:; $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@ 356 357 358define archhelp 359 echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)' 360 echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)' 361 echo '* xipImage - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)' 362 echo ' uImage - U-Boot wrapped zImage' 363 echo ' bootpImage - Combined zImage and initial RAM disk' 364 echo ' (supply initrd image via make variable INITRD=<path>)' 365 echo '* dtbs - Build device tree blobs for enabled boards' 366 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)' 367 echo ' install - Install uncompressed kernel' 368 echo ' zinstall - Install compressed kernel' 369 echo ' uinstall - Install U-Boot wrapped compressed kernel' 370 echo ' Install using (your) ~/bin/$(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