4 # This file is included by the global makefile so that you can add your own
5 # architecture-specific flags and dependencies.
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
11 # Copyright (C) 1995-2001 by Russell King
13 LDFLAGS_vmlinux := --no-undefined -X --pic-veneer
14 ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
15 LDFLAGS_vmlinux += --be8
16 KBUILD_LDFLAGS_MODULE += --be8
19 ifeq ($(CONFIG_ARM_MODULE_PLTS),y)
20 KBUILD_LDS_MODULE += $(srctree)/arch/arm/kernel/module.lds
24 #KBUILD_CFLAGS +=-pipe
26 # Never generate .eh_frame
27 KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm)
29 # This should work on most of the modern platforms
30 KBUILD_DEFCONFIG := multi_v7_defconfig
32 # defines filename extension depending memory management type.
35 KBUILD_CFLAGS += $(call cc-option,-mno-unaligned-access)
38 ifeq ($(CONFIG_FRAME_POINTER),y)
39 KBUILD_CFLAGS +=-fno-omit-frame-pointer
40 ifeq ($(CONFIG_CC_IS_GCC),y)
41 KBUILD_CFLAGS += -mapcs -mno-sched-prolog
45 ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
46 KBUILD_CPPFLAGS += -mbig-endian
47 CHECKFLAGS += -D__ARMEB__
50 KBUILD_CPPFLAGS += -mlittle-endian
51 CHECKFLAGS += -D__ARMEL__
56 # The Scalar Replacement of Aggregates (SRA) optimization pass in GCC 4.9 and
57 # later may result in code being generated that handles signed short and signed
58 # char struct members incorrectly. So disable it.
59 # (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65932)
61 KBUILD_CFLAGS += $(call cc-option,-fno-ipa-sra)
63 # This selects which instruction set is used.
64 # Note that GCC does not numerically define an architecture version
65 # macro, but instead defines a whole series of macros which makes
66 # testing for a specific architecture or later rather impossible.
67 arch-$(CONFIG_CPU_32v7M) =-D__LINUX_ARM_ARCH__=7 -march=armv7-m -Wa,-march=armv7-m
68 arch-$(CONFIG_CPU_32v7) =-D__LINUX_ARM_ARCH__=7 $(call cc-option,-march=armv7-a,-march=armv5t -Wa$(comma)-march=armv7-a)
69 arch-$(CONFIG_CPU_32v6) =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6,-march=armv5t -Wa$(comma)-march=armv6)
70 # Only override the compiler option if ARMv6. The ARMv6K extensions are
71 # always available in ARMv7
72 ifeq ($(CONFIG_CPU_32v6),y)
73 arch-$(CONFIG_CPU_32v6K) =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6k,-march=armv5t -Wa$(comma)-march=armv6k)
75 arch-$(CONFIG_CPU_32v5) =-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t)
76 arch-$(CONFIG_CPU_32v4T) =-D__LINUX_ARM_ARCH__=4 -march=armv4t
77 arch-$(CONFIG_CPU_32v4) =-D__LINUX_ARM_ARCH__=4 -march=armv4
78 arch-$(CONFIG_CPU_32v3) =-D__LINUX_ARM_ARCH__=3 -march=armv3m
80 # Evaluate arch cc-option calls now
83 # This selects how we optimise for the processor.
84 tune-$(CONFIG_CPU_ARM7TDMI) =-mtune=arm7tdmi
85 tune-$(CONFIG_CPU_ARM720T) =-mtune=arm7tdmi
86 tune-$(CONFIG_CPU_ARM740T) =-mtune=arm7tdmi
87 tune-$(CONFIG_CPU_ARM9TDMI) =-mtune=arm9tdmi
88 tune-$(CONFIG_CPU_ARM940T) =-mtune=arm9tdmi
89 tune-$(CONFIG_CPU_ARM946E) =$(call cc-option,-mtune=arm9e,-mtune=arm9tdmi)
90 tune-$(CONFIG_CPU_ARM920T) =-mtune=arm9tdmi
91 tune-$(CONFIG_CPU_ARM922T) =-mtune=arm9tdmi
92 tune-$(CONFIG_CPU_ARM925T) =-mtune=arm9tdmi
93 tune-$(CONFIG_CPU_ARM926T) =-mtune=arm9tdmi
94 tune-$(CONFIG_CPU_FA526) =-mtune=arm9tdmi
95 tune-$(CONFIG_CPU_SA110) =-mtune=strongarm110
96 tune-$(CONFIG_CPU_SA1100) =-mtune=strongarm1100
97 tune-$(CONFIG_CPU_XSCALE) =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
98 tune-$(CONFIG_CPU_XSC3) =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
99 tune-$(CONFIG_CPU_FEROCEON) =$(call cc-option,-mtune=marvell-f,-mtune=xscale)
100 tune-$(CONFIG_CPU_V6) =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
101 tune-$(CONFIG_CPU_V6K) =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
103 # Evaluate tune cc-option calls now
106 ifeq ($(CONFIG_AEABI),y)
107 CFLAGS_ABI :=-mabi=aapcs-linux -mfpu=vfp
109 CFLAGS_ABI :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,)
112 ifeq ($(CONFIG_ARM_UNWIND),y)
113 CFLAGS_ABI +=-funwind-tables
116 ifeq ($(CONFIG_CC_IS_CLANG),y)
117 CFLAGS_ABI += -meabi gnu
120 # Accept old syntax despite ".syntax unified"
121 AFLAGS_NOWARN :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
123 ifeq ($(CONFIG_THUMB2_KERNEL),y)
124 CFLAGS_ISA :=-mthumb -Wa,-mimplicit-it=always $(AFLAGS_NOWARN)
125 AFLAGS_ISA :=$(CFLAGS_ISA) -Wa$(comma)-mthumb
127 CFLAGS_ISA :=$(call cc-option,-marm,) $(AFLAGS_NOWARN)
128 AFLAGS_ISA :=$(CFLAGS_ISA)
131 # Need -Uarm for gcc < 3.x
132 KBUILD_CFLAGS +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
133 KBUILD_AFLAGS +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float
135 CHECKFLAGS += -D__arm__
138 head-y := arch/arm/kernel/head$(MMUEXT).o
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.
142 textofs-y := 0x00008000
143 # We don't want the htc bootloader to corrupt kernel during resume
144 textofs-$(CONFIG_PM_H1940) := 0x00108000
145 # RTD1195 has Boot ROM at start of address space
146 textofs-$(CONFIG_ARCH_REALTEK) := 0x00108000
147 # SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
148 ifeq ($(CONFIG_ARCH_SA1100),y)
149 textofs-$(CONFIG_SA1111) := 0x00208000
151 textofs-$(CONFIG_ARCH_IPQ40XX) := 0x00208000
152 textofs-$(CONFIG_ARCH_MSM8X60) := 0x00208000
153 textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000
154 textofs-$(CONFIG_ARCH_MESON) := 0x00208000
155 textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000
157 # Machine directory name. This list is sorted alphanumerically
158 # by CONFIG_* macro name.
159 machine-$(CONFIG_ARCH_ACTIONS) += actions
160 machine-$(CONFIG_ARCH_ALPINE) += alpine
161 machine-$(CONFIG_ARCH_ARTPEC) += artpec
162 machine-$(CONFIG_ARCH_ASPEED) += aspeed
163 machine-$(CONFIG_ARCH_AT91) += at91
164 machine-$(CONFIG_ARCH_AXXIA) += axxia
165 machine-$(CONFIG_ARCH_BCM) += bcm
166 machine-$(CONFIG_ARCH_BERLIN) += berlin
167 machine-$(CONFIG_ARCH_CLPS711X) += clps711x
168 machine-$(CONFIG_ARCH_CNS3XXX) += cns3xxx
169 machine-$(CONFIG_ARCH_DAVINCI) += davinci
170 machine-$(CONFIG_ARCH_DIGICOLOR) += digicolor
171 machine-$(CONFIG_ARCH_DOVE) += dove
172 machine-$(CONFIG_ARCH_EBSA110) += ebsa110
173 machine-$(CONFIG_ARCH_EFM32) += efm32
174 machine-$(CONFIG_ARCH_EP93XX) += ep93xx
175 machine-$(CONFIG_ARCH_EXYNOS) += exynos
176 machine-$(CONFIG_ARCH_FOOTBRIDGE) += footbridge
177 machine-$(CONFIG_ARCH_GEMINI) += gemini
178 machine-$(CONFIG_ARCH_HIGHBANK) += highbank
179 machine-$(CONFIG_ARCH_HISI) += hisi
180 machine-$(CONFIG_ARCH_INTEGRATOR) += integrator
181 machine-$(CONFIG_ARCH_IOP32X) += iop32x
182 machine-$(CONFIG_ARCH_IXP4XX) += ixp4xx
183 machine-$(CONFIG_ARCH_KEYSTONE) += keystone
184 machine-$(CONFIG_ARCH_LPC18XX) += lpc18xx
185 machine-$(CONFIG_ARCH_LPC32XX) += lpc32xx
186 machine-$(CONFIG_ARCH_MESON) += meson
187 machine-$(CONFIG_ARCH_MMP) += mmp
188 machine-$(CONFIG_ARCH_MPS2) += vexpress
189 machine-$(CONFIG_ARCH_MOXART) += moxart
190 machine-$(CONFIG_ARCH_MV78XX0) += mv78xx0
191 machine-$(CONFIG_ARCH_MVEBU) += mvebu
192 machine-$(CONFIG_ARCH_MXC) += imx
193 machine-$(CONFIG_ARCH_MEDIATEK) += mediatek
194 machine-$(CONFIG_ARCH_MILBEAUT) += milbeaut
195 machine-$(CONFIG_ARCH_MXS) += mxs
196 machine-$(CONFIG_ARCH_MSTARV7) += mstar
197 machine-$(CONFIG_ARCH_NOMADIK) += nomadik
198 machine-$(CONFIG_ARCH_NPCM) += npcm
199 machine-$(CONFIG_ARCH_NSPIRE) += nspire
200 machine-$(CONFIG_ARCH_OXNAS) += oxnas
201 machine-$(CONFIG_ARCH_OMAP1) += omap1
202 machine-$(CONFIG_ARCH_OMAP2PLUS) += omap2
203 machine-$(CONFIG_ARCH_ORION5X) += orion5x
204 machine-$(CONFIG_ARCH_PICOXCELL) += picoxcell
205 machine-$(CONFIG_ARCH_PXA) += pxa
206 machine-$(CONFIG_ARCH_QCOM) += qcom
207 machine-$(CONFIG_ARCH_RDA) += rda
208 machine-$(CONFIG_ARCH_REALTEK) += realtek
209 machine-$(CONFIG_ARCH_REALVIEW) += realview
210 machine-$(CONFIG_ARCH_ROCKCHIP) += rockchip
211 machine-$(CONFIG_ARCH_RPC) += rpc
212 machine-$(CONFIG_ARCH_S3C24XX) += s3c24xx
213 machine-$(CONFIG_ARCH_S3C64XX) += s3c64xx
214 machine-$(CONFIG_ARCH_S5PV210) += s5pv210
215 machine-$(CONFIG_ARCH_SA1100) += sa1100
216 machine-$(CONFIG_ARCH_RENESAS) += shmobile
217 machine-$(CONFIG_ARCH_SIRF) += prima2
218 machine-$(CONFIG_ARCH_SOCFPGA) += socfpga
219 machine-$(CONFIG_ARCH_STI) += sti
220 machine-$(CONFIG_ARCH_STM32) += stm32
221 machine-$(CONFIG_ARCH_SUNXI) += sunxi
222 machine-$(CONFIG_ARCH_TANGO) += tango
223 machine-$(CONFIG_ARCH_TEGRA) += tegra
224 machine-$(CONFIG_ARCH_U300) += u300
225 machine-$(CONFIG_ARCH_U8500) += ux500
226 machine-$(CONFIG_ARCH_VERSATILE) += versatile
227 machine-$(CONFIG_ARCH_VEXPRESS) += vexpress
228 machine-$(CONFIG_ARCH_VT8500) += vt8500
229 machine-$(CONFIG_ARCH_ZX) += zx
230 machine-$(CONFIG_ARCH_ZYNQ) += zynq
231 machine-$(CONFIG_PLAT_SPEAR) += spear
233 # Platform directory name. This list is sorted alphanumerically
234 # by CONFIG_* macro name.
235 plat-$(CONFIG_ARCH_EXYNOS) += samsung
236 plat-$(CONFIG_ARCH_OMAP) += omap
237 plat-$(CONFIG_ARCH_S3C64XX) += samsung
238 plat-$(CONFIG_ARCH_S5PV210) += samsung
239 plat-$(CONFIG_PLAT_ORION) += orion
240 plat-$(CONFIG_PLAT_PXA) += pxa
241 plat-$(CONFIG_PLAT_S3C24XX) += samsung
242 plat-$(CONFIG_PLAT_VERSATILE) += versatile
244 ifeq ($(CONFIG_ARCH_EBSA110),y)
245 # This is what happens if you forget the IOCS16 line.
246 # PCMCIA cards stop working.
247 CFLAGS_3c589_cs.o :=-DISA_SIXTEEN_BIT_PERIPHERAL
248 export CFLAGS_3c589_cs.o
251 # The byte offset of the kernel image in RAM from the start of RAM.
252 TEXT_OFFSET := $(textofs-y)
254 # The first directory contains additional information for the boot setup code
255 ifneq ($(machine-y),)
256 MACHINE := arch/arm/mach-$(word 1,$(machine-y))/
260 ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y)
264 machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y))
265 platdirs := $(patsubst %,arch/arm/plat-%/,$(sort $(plat-y)))
267 ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y)
268 ifneq ($(CONFIG_ARM_SINGLE_ARMV7M),y)
269 KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs))
273 export TEXT_OFFSET GZFLAGS MMUEXT
276 # If we have a machine-specific directory, then include it in the build.
277 core-y += $(machdirs) $(platdirs)
280 core- += $(patsubst %,arch/arm/mach-%/, $(machine-))
281 core- += $(patsubst %,arch/arm/plat-%/, $(plat-))
283 drivers-$(CONFIG_OPROFILE) += arch/arm/oprofile/
285 libs-y := arch/arm/lib/ $(libs-y)
287 # Default target when executing plain make
288 boot := arch/arm/boot
289 ifeq ($(CONFIG_XIP_KERNEL),y)
290 KBUILD_IMAGE := $(boot)/xipImage
292 KBUILD_IMAGE := $(boot)/zImage
295 ifeq ($(CONFIG_STACKPROTECTOR_PER_TASK),y)
296 prepare: stack_protector_prepare
297 stack_protector_prepare: prepare0
298 $(eval SSP_PLUGIN_CFLAGS := \
299 -fplugin-arg-arm_ssp_per_task_plugin-tso=$(shell \
300 awk '{if ($$2 == "THREAD_SZ_ORDER") print $$3;}'\
301 include/generated/asm-offsets.h) \
302 -fplugin-arg-arm_ssp_per_task_plugin-offset=$(shell \
303 awk '{if ($$2 == "TI_STACK_CANARY") print $$3;}'\
304 include/generated/asm-offsets.h))
305 $(eval KBUILD_CFLAGS += $(SSP_PLUGIN_CFLAGS))
306 $(eval GCC_PLUGINS_CFLAGS += $(SSP_PLUGIN_CFLAGS))
309 all: $(notdir $(KBUILD_IMAGE))
313 $(Q)$(MAKE) $(build)=arch/arm/tools uapi
316 $(Q)$(MAKE) $(build)=arch/arm/tools kapi
318 # Convert bzImage to zImage
321 BOOT_TARGETS = zImage Image xipImage bootpImage uImage
322 INSTALL_TARGETS = zinstall uinstall install
324 PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS)
326 bootpImage uImage: zImage
329 $(BOOT_TARGETS): vmlinux
330 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
331 @$(kecho) ' Kernel: $(boot)/$@ is ready'
334 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
336 PHONY += vdso_install
338 ifeq ($(CONFIG_VDSO),y)
339 $(Q)$(MAKE) $(build)=arch/arm/vdso $@
342 # We use MRPROPER_FILES and CLEAN_FILES now
344 $(Q)$(MAKE) $(clean)=$(boot)
346 # My testing targets (bypasses dependencies)
347 bp:; $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage
351 echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
352 echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
353 echo '* xipImage - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)'
354 echo ' uImage - U-Boot wrapped zImage'
355 echo ' bootpImage - Combined zImage and initial RAM disk'
356 echo ' (supply initrd image via make variable INITRD=<path>)'
357 echo ' install - Install uncompressed kernel'
358 echo ' zinstall - Install compressed kernel'
359 echo ' uinstall - Install U-Boot wrapped compressed kernel'
360 echo ' Install using (your) ~/bin/$(INSTALLKERNEL) or'
361 echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
362 echo ' install to $$(INSTALL_PATH) and run lilo'
363 echo ' vdso_install - Install unstripped vdso.so to $$(INSTALL_MOD_PATH)/vdso'