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 # Ensure linker flags are correct
16 LDFLAGS_vmlinux :=-p --no-undefined -X --pic-veneer
17 ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
18 LDFLAGS_vmlinux += --be8
19 LDFLAGS_MODULE += --be8
22 ifeq ($(CONFIG_ARM_MODULE_PLTS),y)
23 LDFLAGS_MODULE += -T $(srctree)/arch/arm/kernel/module.lds
26 OBJCOPYFLAGS :=-O binary -R .comment -S
28 #KBUILD_CFLAGS +=-pipe
30 # Never generate .eh_frame
31 KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm)
33 # This should work on most of the modern platforms
34 KBUILD_DEFCONFIG := multi_v7_defconfig
36 # defines filename extension depending memory management type.
39 KBUILD_CFLAGS += $(call cc-option,-mno-unaligned-access)
42 ifeq ($(CONFIG_FRAME_POINTER),y)
43 KBUILD_CFLAGS +=-fno-omit-frame-pointer -mapcs -mno-sched-prolog
46 ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
47 KBUILD_CPPFLAGS += -mbig-endian
51 KBUILD_CPPFLAGS += -mlittle-endian
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)
62 KBUILD_CFLAGS += $(call cc-option,-fno-ipa-sra)
64 # This selects which instruction set is used.
65 # Note that GCC does not numerically define an architecture version
66 # macro, but instead defines a whole series of macros which makes
67 # testing for a specific architecture or later rather impossible.
68 arch-$(CONFIG_CPU_32v7M) =-D__LINUX_ARM_ARCH__=7 -march=armv7-m -Wa,-march=armv7-m
69 arch-$(CONFIG_CPU_32v7) =-D__LINUX_ARM_ARCH__=7 $(call cc-option,-march=armv7-a,-march=armv5t -Wa$(comma)-march=armv7-a)
70 arch-$(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
73 ifeq ($(CONFIG_CPU_32v6),y)
74 arch-$(CONFIG_CPU_32v6K) =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6k,-march=armv5t -Wa$(comma)-march=armv6k)
76 arch-$(CONFIG_CPU_32v5) =-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t)
77 arch-$(CONFIG_CPU_32v4T) =-D__LINUX_ARM_ARCH__=4 -march=armv4t
78 arch-$(CONFIG_CPU_32v4) =-D__LINUX_ARM_ARCH__=4 -march=armv4
79 arch-$(CONFIG_CPU_32v3) =-D__LINUX_ARM_ARCH__=3 -march=armv3
81 # Evaluate arch cc-option calls now
84 # This selects how we optimise for the processor.
85 tune-$(CONFIG_CPU_ARM7TDMI) =-mtune=arm7tdmi
86 tune-$(CONFIG_CPU_ARM720T) =-mtune=arm7tdmi
87 tune-$(CONFIG_CPU_ARM740T) =-mtune=arm7tdmi
88 tune-$(CONFIG_CPU_ARM9TDMI) =-mtune=arm9tdmi
89 tune-$(CONFIG_CPU_ARM940T) =-mtune=arm9tdmi
90 tune-$(CONFIG_CPU_ARM946E) =$(call cc-option,-mtune=arm9e,-mtune=arm9tdmi)
91 tune-$(CONFIG_CPU_ARM920T) =-mtune=arm9tdmi
92 tune-$(CONFIG_CPU_ARM922T) =-mtune=arm9tdmi
93 tune-$(CONFIG_CPU_ARM925T) =-mtune=arm9tdmi
94 tune-$(CONFIG_CPU_ARM926T) =-mtune=arm9tdmi
95 tune-$(CONFIG_CPU_FA526) =-mtune=arm9tdmi
96 tune-$(CONFIG_CPU_SA110) =-mtune=strongarm110
97 tune-$(CONFIG_CPU_SA1100) =-mtune=strongarm1100
98 tune-$(CONFIG_CPU_XSCALE) =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
99 tune-$(CONFIG_CPU_XSC3) =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
100 tune-$(CONFIG_CPU_FEROCEON) =$(call cc-option,-mtune=marvell-f,-mtune=xscale)
101 tune-$(CONFIG_CPU_V6) =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
102 tune-$(CONFIG_CPU_V6K) =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
104 # Evaluate tune cc-option calls now
107 ifeq ($(CONFIG_AEABI),y)
108 CFLAGS_ABI :=-mabi=aapcs-linux -mno-thumb-interwork -mfpu=vfp
110 CFLAGS_ABI :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,)
113 ifeq ($(CONFIG_ARM_UNWIND),y)
114 CFLAGS_ABI +=-funwind-tables
117 ifeq ($(CONFIG_THUMB2_KERNEL),y)
118 AFLAGS_AUTOIT :=$(call as-option,-Wa$(comma)-mimplicit-it=always,-Wa$(comma)-mauto-it)
119 AFLAGS_NOWARN :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
120 CFLAGS_ISA :=-mthumb $(AFLAGS_AUTOIT) $(AFLAGS_NOWARN)
121 AFLAGS_ISA :=$(CFLAGS_ISA) -Wa$(comma)-mthumb
122 # Work around buggy relocation from gas if requested:
123 ifeq ($(CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11),y)
124 CFLAGS_MODULE +=-fno-optimize-sibling-calls
127 CFLAGS_ISA :=$(call cc-option,-marm,)
128 AFLAGS_ISA :=$(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 textofs-$(CONFIG_ARCH_CLPS711X) := 0x00028000
144 # We don't want the htc bootloader to corrupt kernel during resume
145 textofs-$(CONFIG_PM_H1940) := 0x00108000
146 # SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
147 ifeq ($(CONFIG_ARCH_SA1100),y)
148 textofs-$(CONFIG_SA1111) := 0x00208000
150 textofs-$(CONFIG_ARCH_QCOM_A_FAMILY) := 0x00208000
151 textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000
153 # Machine directory name. This list is sorted alphanumerically
154 # by CONFIG_* macro name.
155 machine-$(CONFIG_ARCH_ALPINE) += alpine
156 machine-$(CONFIG_ARCH_AT91) += at91
157 machine-$(CONFIG_ARCH_AXXIA) += axxia
158 machine-$(CONFIG_ARCH_BCM) += bcm
159 machine-$(CONFIG_ARCH_BERLIN) += berlin
160 machine-$(CONFIG_ARCH_CLPS711X) += clps711x
161 machine-$(CONFIG_ARCH_CNS3XXX) += cns3xxx
162 machine-$(CONFIG_ARCH_DAVINCI) += davinci
163 machine-$(CONFIG_ARCH_DIGICOLOR) += digicolor
164 machine-$(CONFIG_ARCH_DOVE) += dove
165 machine-$(CONFIG_ARCH_EBSA110) += ebsa110
166 machine-$(CONFIG_ARCH_EFM32) += efm32
167 machine-$(CONFIG_ARCH_EP93XX) += ep93xx
168 machine-$(CONFIG_ARCH_EXYNOS) += exynos
169 machine-$(CONFIG_ARCH_FOOTBRIDGE) += footbridge
170 machine-$(CONFIG_ARCH_GEMINI) += gemini
171 machine-$(CONFIG_ARCH_HIGHBANK) += highbank
172 machine-$(CONFIG_ARCH_HISI) += hisi
173 machine-$(CONFIG_ARCH_INTEGRATOR) += integrator
174 machine-$(CONFIG_ARCH_IOP13XX) += iop13xx
175 machine-$(CONFIG_ARCH_IOP32X) += iop32x
176 machine-$(CONFIG_ARCH_IOP33X) += iop33x
177 machine-$(CONFIG_ARCH_IXP4XX) += ixp4xx
178 machine-$(CONFIG_ARCH_KEYSTONE) += keystone
179 machine-$(CONFIG_ARCH_KS8695) += ks8695
180 machine-$(CONFIG_ARCH_LPC18XX) += lpc18xx
181 machine-$(CONFIG_ARCH_LPC32XX) += lpc32xx
182 machine-$(CONFIG_ARCH_MESON) += meson
183 machine-$(CONFIG_ARCH_MMP) += mmp
184 machine-$(CONFIG_ARCH_MOXART) += moxart
185 machine-$(CONFIG_ARCH_MV78XX0) += mv78xx0
186 machine-$(CONFIG_ARCH_MVEBU) += mvebu
187 machine-$(CONFIG_ARCH_MXC) += imx
188 machine-$(CONFIG_ARCH_MEDIATEK) += mediatek
189 machine-$(CONFIG_ARCH_MXS) += mxs
190 machine-$(CONFIG_ARCH_NETX) += netx
191 machine-$(CONFIG_ARCH_NOMADIK) += nomadik
192 machine-$(CONFIG_ARCH_NSPIRE) += nspire
193 machine-$(CONFIG_ARCH_OMAP1) += omap1
194 machine-$(CONFIG_ARCH_OMAP2PLUS) += omap2
195 machine-$(CONFIG_ARCH_ORION5X) += orion5x
196 machine-$(CONFIG_ARCH_PICOXCELL) += picoxcell
197 machine-$(CONFIG_ARCH_PXA) += pxa
198 machine-$(CONFIG_ARCH_QCOM) += qcom
199 machine-$(CONFIG_ARCH_REALVIEW) += realview
200 machine-$(CONFIG_ARCH_ROCKCHIP) += rockchip
201 machine-$(CONFIG_ARCH_RPC) += rpc
202 machine-$(CONFIG_ARCH_S3C24XX) += s3c24xx
203 machine-$(CONFIG_ARCH_S3C64XX) += s3c64xx
204 machine-$(CONFIG_ARCH_S5PV210) += s5pv210
205 machine-$(CONFIG_ARCH_SA1100) += sa1100
206 machine-$(CONFIG_ARCH_SHMOBILE) += shmobile
207 machine-$(CONFIG_ARCH_SIRF) += prima2
208 machine-$(CONFIG_ARCH_SOCFPGA) += socfpga
209 machine-$(CONFIG_ARCH_STI) += sti
210 machine-$(CONFIG_ARCH_STM32) += stm32
211 machine-$(CONFIG_ARCH_SUNXI) += sunxi
212 machine-$(CONFIG_ARCH_TANGO) += tango
213 machine-$(CONFIG_ARCH_TEGRA) += tegra
214 machine-$(CONFIG_ARCH_U300) += u300
215 machine-$(CONFIG_ARCH_U8500) += ux500
216 machine-$(CONFIG_ARCH_UNIPHIER) += uniphier
217 machine-$(CONFIG_ARCH_VERSATILE) += versatile
218 machine-$(CONFIG_ARCH_VEXPRESS) += vexpress
219 machine-$(CONFIG_ARCH_VT8500) += vt8500
220 machine-$(CONFIG_ARCH_W90X900) += w90x900
221 machine-$(CONFIG_ARCH_ZX) += zx
222 machine-$(CONFIG_ARCH_ZYNQ) += zynq
223 machine-$(CONFIG_PLAT_SPEAR) += spear
225 # Platform directory name. This list is sorted alphanumerically
226 # by CONFIG_* macro name.
227 plat-$(CONFIG_ARCH_EXYNOS) += samsung
228 plat-$(CONFIG_ARCH_OMAP) += omap
229 plat-$(CONFIG_ARCH_S3C64XX) += samsung
230 plat-$(CONFIG_ARCH_S5PV210) += samsung
231 plat-$(CONFIG_PLAT_IOP) += iop
232 plat-$(CONFIG_PLAT_ORION) += orion
233 plat-$(CONFIG_PLAT_PXA) += pxa
234 plat-$(CONFIG_PLAT_S3C24XX) += samsung
235 plat-$(CONFIG_PLAT_VERSATILE) += versatile
237 ifeq ($(CONFIG_ARCH_EBSA110),y)
238 # This is what happens if you forget the IOCS16 line.
239 # PCMCIA cards stop working.
240 CFLAGS_3c589_cs.o :=-DISA_SIXTEEN_BIT_PERIPHERAL
241 export CFLAGS_3c589_cs.o
244 # The byte offset of the kernel image in RAM from the start of RAM.
245 TEXT_OFFSET := $(textofs-y)
247 # The first directory contains additional information for the boot setup code
248 ifneq ($(machine-y),)
249 MACHINE := arch/arm/mach-$(word 1,$(machine-y))/
253 ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y)
257 machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y))
258 platdirs := $(patsubst %,arch/arm/plat-%/,$(sort $(plat-y)))
260 ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y)
261 ifeq ($(KBUILD_SRC),)
262 KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(machdirs) $(platdirs))
264 KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs))
268 export TEXT_OFFSET GZFLAGS MMUEXT
270 # Do we have FASTFPE?
271 FASTFPE :=arch/arm/fastfpe
272 ifeq ($(FASTFPE),$(wildcard $(FASTFPE)))
273 FASTFPE_OBJ :=$(FASTFPE)/
276 core-$(CONFIG_FPE_NWFPE) += arch/arm/nwfpe/
277 core-$(CONFIG_FPE_FASTFPE) += $(FASTFPE_OBJ)
278 core-$(CONFIG_VFP) += arch/arm/vfp/
279 core-$(CONFIG_XEN) += arch/arm/xen/
280 core-$(CONFIG_KVM_ARM_HOST) += arch/arm/kvm/
281 core-$(CONFIG_VDSO) += arch/arm/vdso/
283 # If we have a machine-specific directory, then include it in the build.
284 core-y += arch/arm/kernel/ arch/arm/mm/ arch/arm/common/
285 core-y += arch/arm/probes/
286 core-y += arch/arm/net/
287 core-y += arch/arm/crypto/
288 core-y += arch/arm/firmware/
289 core-y += $(machdirs) $(platdirs)
291 drivers-$(CONFIG_OPROFILE) += arch/arm/oprofile/
293 libs-y := arch/arm/lib/ $(libs-y)
295 # Default target when executing plain make
296 ifeq ($(CONFIG_XIP_KERNEL),y)
297 KBUILD_IMAGE := xipImage
299 KBUILD_IMAGE := zImage
302 # Build the DT binary blobs if we have OF configured
303 ifeq ($(CONFIG_USE_OF),y)
307 all: $(KBUILD_IMAGE) $(KBUILD_DTBS)
309 boot := arch/arm/boot
312 $(Q)$(MAKE) $(build)=arch/arm/tools include/generated/mach-types.h
314 # Convert bzImage to zImage
317 BOOT_TARGETS = zImage Image xipImage bootpImage uImage
318 INSTALL_TARGETS = zinstall uinstall install
320 PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS)
322 bootpImage uImage: zImage
325 $(BOOT_TARGETS): vmlinux
326 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
329 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
332 $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
334 PHONY += dtbs dtbs_install
336 dtbs: prepare scripts
337 $(Q)$(MAKE) $(build)=$(boot)/dts
340 $(Q)$(MAKE) $(dtbinst)=$(boot)/dts
342 PHONY += vdso_install
344 ifeq ($(CONFIG_VDSO),y)
345 $(Q)$(MAKE) $(build)=arch/arm/vdso $@
348 # We use MRPROPER_FILES and CLEAN_FILES now
350 $(Q)$(MAKE) $(clean)=$(boot)
352 # My testing targets (bypasses dependencies)
353 bp:; $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage
354 i zi:; $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
358 echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
359 echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
360 echo '* xipImage - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)'
361 echo ' uImage - U-Boot wrapped zImage'
362 echo ' bootpImage - Combined zImage and initial RAM disk'
363 echo ' (supply initrd image via make variable INITRD=<path>)'
364 echo '* dtbs - Build device tree blobs for enabled boards'
365 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'
366 echo ' install - Install uncompressed kernel'
367 echo ' zinstall - Install compressed kernel'
368 echo ' uinstall - Install U-Boot wrapped compressed kernel'
369 echo ' Install using (your) ~/bin/$(INSTALLKERNEL) or'
370 echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
371 echo ' install to $$(INSTALL_PATH) and run lilo'
372 echo ' vdso_install - Install unstripped vdso.so to $$(INSTALL_MOD_PATH)/vdso'