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
17 ifeq ($(CONFIG_CPU_ENDIAN_BE8
),y
)
18 LDFLAGS_vmlinux
+= --be8
21 OBJCOPYFLAGS
:=-O binary
-R .comment
-S
23 #KBUILD_CFLAGS +=-pipe
25 # Never generate .eh_frame
26 KBUILD_CFLAGS
+= $(call cc-option
,-fno-dwarf2-cfi-asm
)
28 # Do not use arch/arm/defconfig - it's always outdated.
29 # Select a platform tht is kept up-to-date
30 KBUILD_DEFCONFIG
:= versatile_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
-mapcs
-mno-sched-prolog
42 ifeq ($(CONFIG_CC_STACKPROTECTOR
),y
)
43 KBUILD_CFLAGS
+=-fstack-protector
46 ifeq ($(CONFIG_CPU_BIG_ENDIAN
),y
)
47 KBUILD_CPPFLAGS
+= -mbig-endian
51 KBUILD_CPPFLAGS
+= -mlittle-endian
59 # The Scalar Replacement of Aggregates (SRA) optimization pass in GCC 4.9 and
60 # later may result in code being generated that handles signed short and signed
61 # char struct members incorrectly. So disable it.
62 # (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65932)
64 KBUILD_CFLAGS
+= $(call cc-option
,-fno-ipa-sra
)
66 # This selects which instruction set is used.
67 # Note that GCC does not numerically define an architecture version
68 # macro, but instead defines a whole series of macros which makes
69 # testing for a specific architecture or later rather impossible.
70 arch-
$(CONFIG_CPU_32v7
) :=-D__LINUX_ARM_ARCH__
=7 $(call cc-option
,-march
=armv7-a
,-march
=armv5t
-Wa
$(comma
)-march
=armv7-a
)
71 arch-
$(CONFIG_CPU_32v6
) :=-D__LINUX_ARM_ARCH__
=6 $(call cc-option
,-march
=armv6
,-march
=armv5t
-Wa
$(comma
)-march
=armv6
)
72 # Only override the compiler option if ARMv6. The ARMv6K extensions are
73 # always available in ARMv7
74 ifeq ($(CONFIG_CPU_32v6
),y
)
75 arch-
$(CONFIG_CPU_32v6K
) :=-D__LINUX_ARM_ARCH__
=6 $(call cc-option
,-march
=armv6k
,-march
=armv5t
-Wa
$(comma
)-march
=armv6k
)
77 arch-
$(CONFIG_CPU_32v5
) :=-D__LINUX_ARM_ARCH__
=5 $(call cc-option
,-march
=armv5te
,-march
=armv4t
)
78 arch-
$(CONFIG_CPU_32v4T
) :=-D__LINUX_ARM_ARCH__
=4 -march
=armv4t
79 arch-
$(CONFIG_CPU_32v4
) :=-D__LINUX_ARM_ARCH__
=4 -march
=armv4
80 arch-
$(CONFIG_CPU_32v3
) :=-D__LINUX_ARM_ARCH__
=3 -march
=armv3
82 # This selects how we optimise for the processor.
83 tune-
$(CONFIG_CPU_ARM7TDMI
) :=-mtune
=arm7tdmi
84 tune-
$(CONFIG_CPU_ARM720T
) :=-mtune
=arm7tdmi
85 tune-
$(CONFIG_CPU_ARM740T
) :=-mtune
=arm7tdmi
86 tune-
$(CONFIG_CPU_ARM9TDMI
) :=-mtune
=arm9tdmi
87 tune-
$(CONFIG_CPU_ARM940T
) :=-mtune
=arm9tdmi
88 tune-
$(CONFIG_CPU_ARM946E
) :=$(call cc-option
,-mtune
=arm9e
,-mtune
=arm9tdmi
)
89 tune-
$(CONFIG_CPU_ARM920T
) :=-mtune
=arm9tdmi
90 tune-
$(CONFIG_CPU_ARM922T
) :=-mtune
=arm9tdmi
91 tune-
$(CONFIG_CPU_ARM925T
) :=-mtune
=arm9tdmi
92 tune-
$(CONFIG_CPU_ARM926T
) :=-mtune
=arm9tdmi
93 tune-
$(CONFIG_CPU_FA526
) :=-mtune
=arm9tdmi
94 tune-
$(CONFIG_CPU_SA110
) :=-mtune
=strongarm110
95 tune-
$(CONFIG_CPU_SA1100
) :=-mtune
=strongarm1100
96 tune-
$(CONFIG_CPU_XSCALE
) :=$(call cc-option
,-mtune
=xscale
,-mtune
=strongarm110
) -Wa
,-mcpu
=xscale
97 tune-
$(CONFIG_CPU_XSC3
) :=$(call cc-option
,-mtune
=xscale
,-mtune
=strongarm110
) -Wa
,-mcpu
=xscale
98 tune-
$(CONFIG_CPU_FEROCEON
) :=$(call cc-option
,-mtune
=marvell-f
,-mtune
=xscale
)
99 tune-
$(CONFIG_CPU_V6
) :=$(call cc-option
,-mtune
=arm1136j-s
,-mtune
=strongarm
)
100 tune-
$(CONFIG_CPU_V6K
) :=$(call cc-option
,-mtune
=arm1136j-s
,-mtune
=strongarm
)
102 ifeq ($(CONFIG_AEABI
),y
)
103 CFLAGS_ABI
:=-mabi
=aapcs-linux
-mno-thumb-interwork
105 CFLAGS_ABI
:=$(call cc-option
,-mapcs-32
,-mabi
=apcs-gnu
) $(call cc-option
,-mno-thumb-interwork
,)
108 ifeq ($(CONFIG_ARM_UNWIND
),y
)
109 CFLAGS_ABI
+=-funwind-tables
112 ifeq ($(CONFIG_THUMB2_KERNEL
),y
)
113 AFLAGS_AUTOIT
:=$(call as-option
,-Wa
$(comma
)-mimplicit-it
=always
,-Wa
$(comma
)-mauto-it
)
114 AFLAGS_NOWARN
:=$(call as-option
,-Wa
$(comma
)-mno-warn-deprecated
,-Wa
$(comma
)-W
)
115 CFLAGS_ISA
:=-mthumb
$(AFLAGS_AUTOIT
) $(AFLAGS_NOWARN
)
116 AFLAGS_ISA
:=$(CFLAGS_ISA
) -Wa
$(comma
)-mthumb
117 # Work around buggy relocation from gas if requested:
118 ifeq ($(CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11
),y
)
119 CFLAGS_MODULE
+=-fno-optimize-sibling-calls
122 CFLAGS_ISA
:=$(call cc-option
,-marm
,)
123 AFLAGS_ISA
:=$(CFLAGS_ISA
)
126 # Need -Uarm for gcc < 3.x
127 KBUILD_CFLAGS
+=$(CFLAGS_ABI
) $(CFLAGS_ISA
) $(arch-y
) $(tune-y
) $(call cc-option
,-mshort-load-bytes
,$(call cc-option
,-malignment-traps
,)) -msoft-float
-Uarm
128 KBUILD_AFLAGS
+=$(CFLAGS_ABI
) $(AFLAGS_ISA
) $(arch-y
) $(tune-y
) -include asm
/unified.h
-msoft-float
130 CHECKFLAGS
+= -D__arm__
133 head-y
:= arch
/arm
/kernel
/head
$(MMUEXT
).o
134 textofs-y
:= 0x00008000
135 textofs-
$(CONFIG_ARCH_CLPS711X
) := 0x00028000
136 # We don't want the htc bootloader to corrupt kernel during resume
137 textofs-
$(CONFIG_PM_H1940
) := 0x00108000
138 # SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
139 ifeq ($(CONFIG_ARCH_SA1100
),y
)
140 textofs-
$(CONFIG_SA1111
) := 0x00208000
142 textofs-
$(CONFIG_ARCH_MSM7X30
) := 0x00208000
143 textofs-
$(CONFIG_ARCH_MSM8X60
) := 0x00208000
144 textofs-
$(CONFIG_ARCH_MSM8960
) := 0x00208000
146 # Machine directory name. This list is sorted alphanumerically
147 # by CONFIG_* macro name.
148 machine-
$(CONFIG_ARCH_AT91
) += at91
149 machine-
$(CONFIG_ARCH_BCM
) += bcm
150 machine-
$(CONFIG_ARCH_BCM2835
) += bcm2835
151 machine-
$(CONFIG_ARCH_CLPS711X
) += clps711x
152 machine-
$(CONFIG_ARCH_CNS3XXX
) += cns3xxx
153 machine-
$(CONFIG_ARCH_DAVINCI
) += davinci
154 machine-
$(CONFIG_ARCH_DOVE
) += dove
155 machine-
$(CONFIG_ARCH_EBSA110
) += ebsa110
156 machine-
$(CONFIG_ARCH_EP93XX
) += ep93xx
157 machine-
$(CONFIG_ARCH_GEMINI
) += gemini
158 machine-
$(CONFIG_ARCH_HIGHBANK
) += highbank
159 machine-
$(CONFIG_ARCH_INTEGRATOR
) += integrator
160 machine-
$(CONFIG_ARCH_IOP13XX
) += iop13xx
161 machine-
$(CONFIG_ARCH_IOP32X
) += iop32x
162 machine-
$(CONFIG_ARCH_IOP33X
) += iop33x
163 machine-
$(CONFIG_ARCH_IXP4XX
) += ixp4xx
164 machine-
$(CONFIG_ARCH_KIRKWOOD
) += kirkwood
165 machine-
$(CONFIG_ARCH_KS8695
) += ks8695
166 machine-
$(CONFIG_ARCH_LPC32XX
) += lpc32xx
167 machine-
$(CONFIG_ARCH_MMP
) += mmp
168 machine-
$(CONFIG_ARCH_MSM
) += msm
169 machine-
$(CONFIG_ARCH_MT6582
) += mt6582
170 machine-
$(CONFIG_ARCH_MT6592
) += mt6592
171 machine-
$(CONFIG_ARCH_MT6572
) += mt6572
172 machine-
$(CONFIG_ARCH_MT8127
) += mt8127
173 machine-
$(CONFIG_ARCH_MV78XX0
) += mv78xx0
174 machine-
$(CONFIG_ARCH_MXC
) += imx
175 machine-
$(CONFIG_ARCH_MXS
) += mxs
176 machine-
$(CONFIG_ARCH_MVEBU
) += mvebu
177 machine-
$(CONFIG_ARCH_NETX
) += netx
178 machine-
$(CONFIG_ARCH_NOMADIK
) += nomadik
179 machine-
$(CONFIG_ARCH_OMAP1
) += omap1
180 machine-
$(CONFIG_ARCH_OMAP2PLUS
) += omap2
181 machine-
$(CONFIG_ARCH_ORION5X
) += orion5x
182 machine-
$(CONFIG_ARCH_PICOXCELL
) += picoxcell
183 machine-
$(CONFIG_ARCH_PRIMA2
) += prima2
184 machine-
$(CONFIG_ARCH_PXA
) += pxa
185 machine-
$(CONFIG_ARCH_REALVIEW
) += realview
186 machine-
$(CONFIG_ARCH_RPC
) += rpc
187 machine-
$(CONFIG_ARCH_S3C24XX
) += s3c24xx
188 machine-
$(CONFIG_ARCH_S3C64XX
) += s3c64xx
189 machine-
$(CONFIG_ARCH_S5P64X0
) += s5p64x0
190 machine-
$(CONFIG_ARCH_S5PC100
) += s5pc100
191 machine-
$(CONFIG_ARCH_S5PV210
) += s5pv210
192 machine-
$(CONFIG_ARCH_EXYNOS
) += exynos
193 machine-
$(CONFIG_ARCH_SA1100
) += sa1100
194 machine-
$(CONFIG_ARCH_SHARK
) += shark
195 machine-
$(CONFIG_ARCH_SHMOBILE
) += shmobile
196 machine-
$(CONFIG_ARCH_TEGRA
) += tegra
197 machine-
$(CONFIG_ARCH_U300
) += u300
198 machine-
$(CONFIG_ARCH_U8500
) += ux500
199 machine-
$(CONFIG_ARCH_VERSATILE
) += versatile
200 machine-
$(CONFIG_ARCH_VEXPRESS
) += vexpress
201 machine-
$(CONFIG_ARCH_VT8500
) += vt8500
202 machine-
$(CONFIG_ARCH_W90X900
) += w90x900
203 machine-
$(CONFIG_FOOTBRIDGE
) += footbridge
204 machine-
$(CONFIG_ARCH_SOCFPGA
) += socfpga
205 machine-
$(CONFIG_PLAT_SPEAR
) += spear
206 machine-
$(CONFIG_ARCH_VIRT
) += virt
207 machine-
$(CONFIG_ARCH_ZYNQ
) += zynq
208 machine-
$(CONFIG_ARCH_SUNXI
) += sunxi
210 # Platform directory name. This list is sorted alphanumerically
211 # by CONFIG_* macro name.
212 plat-
$(CONFIG_ARCH_OMAP
) += omap
213 plat-
$(CONFIG_ARCH_S3C64XX
) += samsung
214 plat-
$(CONFIG_PLAT_IOP
) += iop
215 plat-
$(CONFIG_PLAT_ORION
) += orion
216 plat-
$(CONFIG_PLAT_PXA
) += pxa
217 plat-
$(CONFIG_PLAT_S3C24XX
) += samsung
218 plat-
$(CONFIG_PLAT_S5P
) += samsung
219 plat-
$(CONFIG_PLAT_VERSATILE
) += versatile
221 ifeq ($(CONFIG_ARCH_EBSA110
),y
)
222 # This is what happens if you forget the IOCS16 line.
223 # PCMCIA cards stop working.
224 CFLAGS_3c589_cs.o
:=-DISA_SIXTEEN_BIT_PERIPHERAL
225 export CFLAGS_3c589_cs.o
228 # The byte offset of the kernel image in RAM from the start of RAM.
229 TEXT_OFFSET
:= $(textofs-y
)
231 # The first directory contains additional information for the boot setup code
232 ifneq ($(machine-y
),)
233 MACHINE
:= arch
/arm
/mach-
$(word 1,$(machine-y
))/
237 ifeq ($(CONFIG_ARCH_MULTIPLATFORM
),y
)
241 machdirs
:= $(patsubst %,arch
/arm
/mach-
%/,$(machine-y
))
242 platdirs
:= $(patsubst %,arch
/arm
/plat-
%/,$(plat-y
))
244 ifneq ($(CONFIG_ARCH_MULTIPLATFORM
),y
)
245 ifeq ($(KBUILD_SRC
),)
246 KBUILD_CPPFLAGS
+= $(patsubst %,-I
%include,$(machdirs
) $(platdirs
))
248 KBUILD_CPPFLAGS
+= $(patsubst %,-I
$(srctree
)/%include,$(machdirs
) $(platdirs
))
252 ifneq ($(filter y
,$(CONFIG_ARCH_MT6752
) $(CONFIG_ARCH_MT6732
) $(CONFIG_ARCH_MT6595
) $(CONFIG_ARCH_MT6795
)),)
253 MTK_PLATFORM
:= $(subst ",,$(CONFIG_MTK_PLATFORM))
254 KBUILD_CPPFLAGS += -I$(srctree)/drivers/misc/mediatek/mach/$(MTK_PLATFORM)/include
257 export TEXT_OFFSET GZFLAGS MMUEXT
259 # Do we have FASTFPE?
260 FASTFPE :=arch/arm/fastfpe
261 ifeq ($(FASTFPE),$(wildcard $(FASTFPE)))
262 FASTFPE_OBJ :=$(FASTFPE)/
265 core-$(CONFIG_FPE_NWFPE) += arch/arm/nwfpe/
266 core-$(CONFIG_FPE_FASTFPE) += $(FASTFPE_OBJ)
267 core-$(CONFIG_VFP) += arch/arm/vfp/
268 core-$(CONFIG_XEN) += arch/arm/xen/
269 core-$(CONFIG_KVM_ARM_HOST) += arch/arm/kvm/
271 # If we have a machine-specific directory, then include it in the build.
272 core-y += arch/arm/kernel/ arch/arm/mm/ arch/arm/common/
273 core-y += arch/arm/net/
274 core-y += arch/arm/crypto/
275 core-y += $(machdirs) $(platdirs)
277 drivers-$(CONFIG_OPROFILE) += arch/arm/oprofile/
279 libs-y := arch/arm/lib/ $(libs-y)
281 # Default target when executing plain make
282 ifeq ($(CONFIG_XIP_KERNEL),y)
283 KBUILD_IMAGE := xipImage
284 else ifeq ($(CONFIG_BUILD_ARM_APPENDED_DTB_IMAGE),y)
285 KBUILD_IMAGE := zImage-dtb
287 KBUILD_IMAGE := zImage
290 # Build the DT binary blobs if we have OF configured
291 ifeq ($(CONFIG_USE_OF),y)
295 MTK_PLATFORM := $(CONFIG_MTK_PLATFORM:"%"=%)
296 MTK_PROJECT := $(CONFIG_ARCH_MTK_PROJECT:"%"=%)
297 export MTK_PLATFORM MTK_PROJECT MTK_TARGET_PROJECT
299 all: $(KBUILD_IMAGE) $(KBUILD_DTBS)
301 boot := arch/arm/boot
304 $(Q)$(MAKE) $(build)=arch/arm/tools include/generated/mach-types.h
305 -include $(srctree)/scripts/ptgen/$(MTK_PLATFORM)/ptgen.mk
306 -include $(srctree)/scripts/drvgen/drvgen.mk
307 -include $(srctree)/scripts/ptgen/$(MTK_PLATFORM)/ptgen.mk
308 # Convert bzImage to zImage
311 zImage Image xipImage bootpImage uImage: vmlinux
312 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
314 zinstall uinstall install: vmlinux
315 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
318 $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
321 $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) dtbs
323 zImage-dtb: vmlinux scripts dtbs
324 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
326 # We use MRPROPER_FILES and CLEAN_FILES now
328 $(Q)$(MAKE) $(clean)=$(boot)
330 # My testing targets (bypasses dependencies)
331 bp:; $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage
332 i zi:; $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
336 echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
337 echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
338 echo '* xipImage - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)'
339 echo ' uImage - U-Boot wrapped zImage'
340 echo ' bootpImage - Combined zImage and initial RAM disk'
341 echo ' (supply initrd image via make variable INITRD=<path>)'
342 echo '* dtbs - Build device tree blobs for enabled boards'
343 echo ' install - Install uncompressed kernel'
344 echo ' zinstall - Install compressed kernel'
345 echo ' uinstall - Install U-Boot wrapped compressed kernel'
346 echo ' Install using (your) ~/bin/$(INSTALLKERNEL) or'
347 echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
348 echo ' install to $$(INSTALL_PATH) and run lilo'