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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 :=-p --no-undefined -X
14ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
15LDFLAGS_vmlinux += --be8
16endif
17
18OBJCOPYFLAGS :=-O binary -R .comment -S
19GZFLAGS :=-9
20#KBUILD_CFLAGS +=-pipe
21# Explicitly specifiy 32-bit ARM ISA since toolchain default can be -mthumb:
22KBUILD_CFLAGS +=$(call cc-option,-marm,)
23
24# Never generate .eh_frame
25KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm)
26
27# Do not use arch/arm/defconfig - it's always outdated.
28# Select a platform tht is kept up-to-date
29KBUILD_DEFCONFIG := versatile_defconfig
30
31# defines filename extension depending memory management type.
32ifeq ($(CONFIG_MMU),)
33MMUEXT := -nommu
34endif
35
36ifeq ($(CONFIG_FRAME_POINTER),y)
37KBUILD_CFLAGS +=-fno-omit-frame-pointer -mapcs -mno-sched-prolog
38endif
39
40ifeq ($(CONFIG_CC_STACKPROTECTOR),y)
41KBUILD_CFLAGS +=-fstack-protector
42endif
43
44ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
45KBUILD_CPPFLAGS += -mbig-endian
46AS += -EB
47LD += -EB
48else
49KBUILD_CPPFLAGS += -mlittle-endian
50AS += -EL
51LD += -EL
52endif
53
54comma = ,
55
56# This selects which instruction set is used.
57# Note that GCC does not numerically define an architecture version
58# macro, but instead defines a whole series of macros which makes
59# testing for a specific architecture or later rather impossible.
60arch-$(CONFIG_CPU_32v7) :=-D__LINUX_ARM_ARCH__=7 $(call cc-option,-march=armv7-a,-march=armv5t -Wa$(comma)-march=armv7-a)
61arch-$(CONFIG_CPU_32v6) :=-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6,-march=armv5t -Wa$(comma)-march=armv6)
62# Only override the compiler option if ARMv6. The ARMv6K extensions are
63# always available in ARMv7
64ifeq ($(CONFIG_CPU_32v6),y)
65arch-$(CONFIG_CPU_32v6K) :=-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6k,-march=armv5t -Wa$(comma)-march=armv6k)
66endif
67arch-$(CONFIG_CPU_32v5) :=-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t)
68arch-$(CONFIG_CPU_32v4T) :=-D__LINUX_ARM_ARCH__=4 -march=armv4t
69arch-$(CONFIG_CPU_32v4) :=-D__LINUX_ARM_ARCH__=4 -march=armv4
70arch-$(CONFIG_CPU_32v3) :=-D__LINUX_ARM_ARCH__=3 -march=armv3
71
72# This selects how we optimise for the processor.
73tune-$(CONFIG_CPU_ARM610) :=-mtune=arm610
74tune-$(CONFIG_CPU_ARM710) :=-mtune=arm710
75tune-$(CONFIG_CPU_ARM7TDMI) :=-mtune=arm7tdmi
76tune-$(CONFIG_CPU_ARM720T) :=-mtune=arm7tdmi
77tune-$(CONFIG_CPU_ARM740T) :=-mtune=arm7tdmi
78tune-$(CONFIG_CPU_ARM9TDMI) :=-mtune=arm9tdmi
79tune-$(CONFIG_CPU_ARM940T) :=-mtune=arm9tdmi
80tune-$(CONFIG_CPU_ARM946E) :=$(call cc-option,-mtune=arm9e,-mtune=arm9tdmi)
81tune-$(CONFIG_CPU_ARM920T) :=-mtune=arm9tdmi
82tune-$(CONFIG_CPU_ARM922T) :=-mtune=arm9tdmi
83tune-$(CONFIG_CPU_ARM925T) :=-mtune=arm9tdmi
84tune-$(CONFIG_CPU_ARM926T) :=-mtune=arm9tdmi
85tune-$(CONFIG_CPU_FA526) :=-mtune=arm9tdmi
86tune-$(CONFIG_CPU_SA110) :=-mtune=strongarm110
87tune-$(CONFIG_CPU_SA1100) :=-mtune=strongarm1100
88tune-$(CONFIG_CPU_XSCALE) :=$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
89tune-$(CONFIG_CPU_XSC3) :=$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
90tune-$(CONFIG_CPU_FEROCEON) :=$(call cc-option,-mtune=marvell-f,-mtune=xscale)
91tune-$(CONFIG_CPU_V6) :=$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
92tune-$(CONFIG_CPU_V6K) :=$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
93
94ifeq ($(CONFIG_AEABI),y)
95CFLAGS_ABI :=-mabi=aapcs-linux -mno-thumb-interwork
96else
97CFLAGS_ABI :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,)
98endif
99
100ifeq ($(CONFIG_ARM_UNWIND),y)
101CFLAGS_ABI +=-funwind-tables
102endif
103
104ifeq ($(CONFIG_THUMB2_KERNEL),y)
105AFLAGS_AUTOIT :=$(call as-option,-Wa$(comma)-mimplicit-it=always,-Wa$(comma)-mauto-it)
106AFLAGS_NOWARN :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
107CFLAGS_THUMB2 :=-mthumb $(AFLAGS_AUTOIT) $(AFLAGS_NOWARN)
108AFLAGS_THUMB2 :=$(CFLAGS_THUMB2) -Wa$(comma)-mthumb
109# Work around buggy relocation from gas if requested:
110ifeq ($(CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11),y)
111CFLAGS_MODULE +=-fno-optimize-sibling-calls
112endif
113endif
114
115# Need -Uarm for gcc < 3.x
116KBUILD_CFLAGS +=$(CFLAGS_ABI) $(CFLAGS_THUMB2) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
117KBUILD_AFLAGS +=$(CFLAGS_ABI) $(AFLAGS_THUMB2) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float
118
119CHECKFLAGS += -D__arm__
120
121#Default value
122head-y := arch/arm/kernel/head$(MMUEXT).o arch/arm/kernel/init_task.o
123textofs-y := 0x00008000
124textofs-$(CONFIG_ARCH_CLPS711X) := 0x00028000
125# We don't want the htc bootloader to corrupt kernel during resume
126textofs-$(CONFIG_PM_H1940) := 0x00108000
127# SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
128ifeq ($(CONFIG_ARCH_SA1100),y)
129textofs-$(CONFIG_SA1111) := 0x00208000
130endif
131
132# Machine directory name. This list is sorted alphanumerically
133# by CONFIG_* macro name.
134machine-$(CONFIG_ARCH_AT91) := at91
135machine-$(CONFIG_ARCH_BCMRING) := bcmring
136machine-$(CONFIG_ARCH_CLPS711X) := clps711x
137machine-$(CONFIG_ARCH_CNS3XXX) := cns3xxx
138machine-$(CONFIG_ARCH_DAVINCI) := davinci
139machine-$(CONFIG_ARCH_DOVE) := dove
140machine-$(CONFIG_ARCH_EBSA110) := ebsa110
141machine-$(CONFIG_ARCH_EP93XX) := ep93xx
142machine-$(CONFIG_ARCH_GEMINI) := gemini
143machine-$(CONFIG_ARCH_H720X) := h720x
144machine-$(CONFIG_ARCH_INTEGRATOR) := integrator
145machine-$(CONFIG_ARCH_IOP13XX) := iop13xx
146machine-$(CONFIG_ARCH_IOP32X) := iop32x
147machine-$(CONFIG_ARCH_IOP33X) := iop33x
148machine-$(CONFIG_ARCH_IXP2000) := ixp2000
149machine-$(CONFIG_ARCH_IXP23XX) := ixp23xx
150machine-$(CONFIG_ARCH_IXP4XX) := ixp4xx
151machine-$(CONFIG_ARCH_KIRKWOOD) := kirkwood
152machine-$(CONFIG_ARCH_KS8695) := ks8695
153machine-$(CONFIG_ARCH_LPC32XX) := lpc32xx
154machine-$(CONFIG_ARCH_MMP) := mmp
155machine-$(CONFIG_ARCH_MSM) := msm
156machine-$(CONFIG_ARCH_MV78XX0) := mv78xx0
157machine-$(CONFIG_ARCH_MX1) := imx
158machine-$(CONFIG_ARCH_MX2) := imx
159machine-$(CONFIG_ARCH_MX25) := imx
160machine-$(CONFIG_ARCH_MX3) := imx
161machine-$(CONFIG_ARCH_MX5) := mx5
162machine-$(CONFIG_ARCH_MXS) := mxs
163machine-$(CONFIG_ARCH_NETX) := netx
164machine-$(CONFIG_ARCH_NOMADIK) := nomadik
165machine-$(CONFIG_ARCH_OMAP1) := omap1
166machine-$(CONFIG_ARCH_OMAP2) := omap2
167machine-$(CONFIG_ARCH_OMAP3) := omap2
168machine-$(CONFIG_ARCH_OMAP4) := omap2
169machine-$(CONFIG_ARCH_ORION5X) := orion5x
170machine-$(CONFIG_ARCH_PNX4008) := pnx4008
171machine-$(CONFIG_ARCH_PRIMA2) := prima2
172machine-$(CONFIG_ARCH_PXA) := pxa
173machine-$(CONFIG_ARCH_REALVIEW) := realview
174machine-$(CONFIG_ARCH_RPC) := rpc
175machine-$(CONFIG_ARCH_S3C2410) := s3c2410 s3c2412 s3c2416 s3c2440 s3c2443
176machine-$(CONFIG_ARCH_S3C64XX) := s3c64xx
177machine-$(CONFIG_ARCH_S5P64X0) := s5p64x0
178machine-$(CONFIG_ARCH_S5PC100) := s5pc100
179machine-$(CONFIG_ARCH_S5PV210) := s5pv210
180machine-$(CONFIG_ARCH_EXYNOS4) := exynos4
181machine-$(CONFIG_ARCH_SA1100) := sa1100
182machine-$(CONFIG_ARCH_SHARK) := shark
183machine-$(CONFIG_ARCH_SHMOBILE) := shmobile
184machine-$(CONFIG_ARCH_TCC8K) := tcc8k
185machine-$(CONFIG_ARCH_TEGRA) := tegra
186machine-$(CONFIG_ARCH_U300) := u300
187machine-$(CONFIG_ARCH_U8500) := ux500
188machine-$(CONFIG_ARCH_VERSATILE) := versatile
189machine-$(CONFIG_ARCH_VEXPRESS) := vexpress
190machine-$(CONFIG_ARCH_VT8500) := vt8500
191machine-$(CONFIG_ARCH_W90X900) := w90x900
192machine-$(CONFIG_ARCH_NUC93X) := nuc93x
193machine-$(CONFIG_FOOTBRIDGE) := footbridge
194machine-$(CONFIG_MACH_SPEAR300) := spear3xx
195machine-$(CONFIG_MACH_SPEAR310) := spear3xx
196machine-$(CONFIG_MACH_SPEAR320) := spear3xx
197machine-$(CONFIG_MACH_SPEAR600) := spear6xx
198machine-$(CONFIG_ARCH_ZYNQ) := zynq
199
200# Platform directory name. This list is sorted alphanumerically
201# by CONFIG_* macro name.
202plat-$(CONFIG_ARCH_MXC) := mxc
203plat-$(CONFIG_ARCH_OMAP) := omap
204plat-$(CONFIG_ARCH_S3C64XX) := samsung
205plat-$(CONFIG_ARCH_TCC_926) := tcc
206plat-$(CONFIG_ARCH_ZYNQ) := versatile
207plat-$(CONFIG_PLAT_IOP) := iop
208plat-$(CONFIG_PLAT_NOMADIK) := nomadik
209plat-$(CONFIG_PLAT_ORION) := orion
210plat-$(CONFIG_PLAT_PXA) := pxa
211plat-$(CONFIG_PLAT_S3C24XX) := s3c24xx samsung
212plat-$(CONFIG_PLAT_S5P) := s5p samsung
213plat-$(CONFIG_PLAT_SPEAR) := spear
214plat-$(CONFIG_PLAT_VERSATILE) := versatile
215
216ifeq ($(CONFIG_ARCH_EBSA110),y)
217# This is what happens if you forget the IOCS16 line.
218# PCMCIA cards stop working.
219CFLAGS_3c589_cs.o :=-DISA_SIXTEEN_BIT_PERIPHERAL
220export CFLAGS_3c589_cs.o
221endif
222
223# The byte offset of the kernel image in RAM from the start of RAM.
224TEXT_OFFSET := $(textofs-y)
225
226# The first directory contains additional information for the boot setup code
227ifneq ($(machine-y),)
228MACHINE := arch/arm/mach-$(word 1,$(machine-y))/
229else
230MACHINE :=
231endif
232
233machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y))
234platdirs := $(patsubst %,arch/arm/plat-%/,$(plat-y))
235
236ifeq ($(KBUILD_SRC),)
237KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(machdirs) $(platdirs))
238else
239KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs))
240endif
241
242export TEXT_OFFSET GZFLAGS MMUEXT
243
244# Do we have FASTFPE?
245FASTFPE :=arch/arm/fastfpe
246ifeq ($(FASTFPE),$(wildcard $(FASTFPE)))
247FASTFPE_OBJ :=$(FASTFPE)/
248endif
249
250core-$(CONFIG_FPE_NWFPE) += arch/arm/nwfpe
251core-$(CONFIG_FPE_FASTFPE) += $(FASTFPE_OBJ)
252core-$(CONFIG_VFP) += arch/arm/vfp/
253
254# If we have a machine-specific directory, then include it in the build.
255core-y += arch/arm/kernel/ arch/arm/mm/ arch/arm/common/
256core-y += $(machdirs) $(platdirs)
257
258drivers-$(CONFIG_OPROFILE) += arch/arm/oprofile/
259
260libs-y := arch/arm/lib/ $(libs-y)
261
262# Default target when executing plain make
263ifeq ($(CONFIG_XIP_KERNEL),y)
264KBUILD_IMAGE := xipImage
265else
266KBUILD_IMAGE := zImage
267endif
268
269all: $(KBUILD_IMAGE)
270
271boot := arch/arm/boot
272
273archprepare:
274 $(Q)$(MAKE) $(build)=arch/arm/tools include/generated/mach-types.h
275
276# Convert bzImage to zImage
277bzImage: zImage
278
279zImage Image xipImage bootpImage uImage: vmlinux
280 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
281
282zinstall uinstall install: vmlinux
283 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
284
285%.dtb:
286 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
287
288dtbs:
289 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
290
291# We use MRPROPER_FILES and CLEAN_FILES now
292archclean:
293 $(Q)$(MAKE) $(clean)=$(boot)
294
295# My testing targets (bypasses dependencies)
296bp:; $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage
297i zi:; $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
298
299
300define archhelp
301 echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
302 echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
303 echo '* xipImage - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)'
304 echo ' uImage - U-Boot wrapped zImage'
305 echo ' bootpImage - Combined zImage and initial RAM disk'
306 echo ' (supply initrd image via make variable INITRD=<path>)'
307 echo ' dtbs - Build device tree blobs for enabled boards'
308 echo ' install - Install uncompressed kernel'
309 echo ' zinstall - Install compressed kernel'
310 echo ' uinstall - Install U-Boot wrapped compressed kernel'
311 echo ' Install using (your) ~/bin/$(INSTALLKERNEL) or'
312 echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
313 echo ' install to $$(INSTALL_PATH) and run lilo'
314endef
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# Disable FDPIC ABI
26KBUILD_CFLAGS += $(call cc-option,-mno-fdpic)
27
28# This should work on most of the modern platforms
29KBUILD_DEFCONFIG := multi_v7_defconfig
30
31# defines filename extension depending memory management type.
32ifeq ($(CONFIG_MMU),)
33MMUEXT := -nommu
34KBUILD_CFLAGS += $(call cc-option,-mno-unaligned-access)
35endif
36
37ifeq ($(CONFIG_FRAME_POINTER),y)
38KBUILD_CFLAGS +=-fno-omit-frame-pointer
39ifeq ($(CONFIG_CC_IS_GCC),y)
40KBUILD_CFLAGS += -mapcs -mno-sched-prolog
41endif
42endif
43
44ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
45KBUILD_CPPFLAGS += -mbig-endian
46CHECKFLAGS += -D__ARMEB__
47KBUILD_LDFLAGS += -EB
48else
49KBUILD_CPPFLAGS += -mlittle-endian
50CHECKFLAGS += -D__ARMEL__
51KBUILD_LDFLAGS += -EL
52endif
53
54#
55# The Scalar Replacement of Aggregates (SRA) optimization pass in GCC 4.9 and
56# later may result in code being generated that handles signed short and signed
57# char struct members incorrectly. So disable it.
58# (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65932)
59#
60KBUILD_CFLAGS += $(call cc-option,-fno-ipa-sra)
61
62# This selects which instruction set is used.
63arch-$(CONFIG_CPU_32v7M) :=-march=armv7-m
64arch-$(CONFIG_CPU_32v7) :=-march=armv7-a
65arch-$(CONFIG_CPU_32v6) :=-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) :=-march=armv6k
70endif
71arch-$(CONFIG_CPU_32v5) :=-march=armv5te
72arch-$(CONFIG_CPU_32v4T) :=-march=armv4t
73arch-$(CONFIG_CPU_32v4) :=-march=armv4
74arch-$(CONFIG_CPU_32v3) :=-march=armv3m
75
76# Note that GCC does not numerically define an architecture version
77# macro, but instead defines a whole series of macros which makes
78# testing for a specific architecture or later rather impossible.
79cpp-$(CONFIG_CPU_32v7M) :=-D__LINUX_ARM_ARCH__=7
80cpp-$(CONFIG_CPU_32v7) :=-D__LINUX_ARM_ARCH__=7
81cpp-$(CONFIG_CPU_32v6) :=-D__LINUX_ARM_ARCH__=6
82# Only override the compiler option if ARMv6. The ARMv6K extensions are
83# always available in ARMv7
84ifeq ($(CONFIG_CPU_32v6),y)
85cpp-$(CONFIG_CPU_32v6K) :=-D__LINUX_ARM_ARCH__=6
86endif
87cpp-$(CONFIG_CPU_32v5) :=-D__LINUX_ARM_ARCH__=5
88cpp-$(CONFIG_CPU_32v4T) :=-D__LINUX_ARM_ARCH__=4
89cpp-$(CONFIG_CPU_32v4) :=-D__LINUX_ARM_ARCH__=4
90cpp-$(CONFIG_CPU_32v3) :=-D__LINUX_ARM_ARCH__=3
91
92# This selects how we optimise for the processor.
93tune-$(CONFIG_CPU_ARM7TDMI) :=-mtune=arm7tdmi
94tune-$(CONFIG_CPU_ARM720T) :=-mtune=arm7tdmi
95tune-$(CONFIG_CPU_ARM740T) :=-mtune=arm7tdmi
96tune-$(CONFIG_CPU_ARM9TDMI) :=-mtune=arm9tdmi
97tune-$(CONFIG_CPU_ARM940T) :=-mtune=arm9tdmi
98tune-$(CONFIG_CPU_ARM946E) :=-mtune=arm9e
99tune-$(CONFIG_CPU_ARM920T) :=-mtune=arm9tdmi
100tune-$(CONFIG_CPU_ARM922T) :=-mtune=arm9tdmi
101tune-$(CONFIG_CPU_ARM925T) :=-mtune=arm9tdmi
102tune-$(CONFIG_CPU_ARM926T) :=-mtune=arm9tdmi
103tune-$(CONFIG_CPU_FA526) :=-mtune=arm9tdmi
104tune-$(CONFIG_CPU_SA110) :=-mtune=strongarm110
105tune-$(CONFIG_CPU_SA1100) :=-mtune=strongarm1100
106tune-$(CONFIG_CPU_XSCALE) :=-mtune=xscale
107tune-$(CONFIG_CPU_XSC3) :=-mtune=xscale
108tune-$(CONFIG_CPU_FEROCEON) :=-mtune=xscale
109tune-$(CONFIG_CPU_V6) :=-mtune=arm1136j-s
110tune-$(CONFIG_CPU_V6K) :=-mtune=arm1136j-s
111
112ifeq ($(CONFIG_AEABI),y)
113CFLAGS_ABI :=-mabi=aapcs-linux -mfpu=vfp
114else
115CFLAGS_ABI :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,)
116endif
117
118ifeq ($(CONFIG_ARM_UNWIND),y)
119CFLAGS_ABI +=-funwind-tables
120endif
121
122ifeq ($(CONFIG_CC_IS_CLANG),y)
123CFLAGS_ABI += -meabi gnu
124endif
125
126ifeq ($(CONFIG_CURRENT_POINTER_IN_TPIDRURO),y)
127KBUILD_CFLAGS += -mtp=cp15
128endif
129
130# Accept old syntax despite ".syntax unified"
131AFLAGS_NOWARN :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
132
133# The GCC option -ffreestanding is required in order to compile code containing
134# ARM/NEON intrinsics in a non C99-compliant environment (such as the kernel)
135CC_FLAGS_FPU := -ffreestanding
136# Enable <arm_neon.h>
137CC_FLAGS_FPU += -isystem $(shell $(CC) -print-file-name=include)
138CC_FLAGS_FPU += -march=armv7-a -mfloat-abi=softfp -mfpu=neon
139
140ifeq ($(CONFIG_THUMB2_KERNEL),y)
141CFLAGS_ISA :=-Wa,-mimplicit-it=always $(AFLAGS_NOWARN)
142AFLAGS_ISA :=$(CFLAGS_ISA) -Wa$(comma)-mthumb
143CFLAGS_ISA +=-mthumb
144else
145CFLAGS_ISA :=$(call cc-option,-marm,) $(AFLAGS_NOWARN)
146AFLAGS_ISA :=$(CFLAGS_ISA)
147endif
148
149# Need -Uarm for gcc < 3.x
150KBUILD_CPPFLAGS +=$(cpp-y)
151KBUILD_CFLAGS +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
152KBUILD_AFLAGS +=$(CFLAGS_ABI) $(AFLAGS_ISA) -Wa,$(arch-y) $(tune-y) -include asm/unified.h -msoft-float
153
154CHECKFLAGS += -D__arm__
155
156# Text offset. This list is sorted numerically by address in order to
157# provide a means to avoid/resolve conflicts in multi-arch kernels.
158# Note: the 32kB below this value is reserved for use by the kernel
159# during boot, and this offset is critical to the functioning of
160# kexec-tools.
161textofs-y := 0x00008000
162# RTD1195 has Boot ROM at start of address space
163textofs-$(CONFIG_ARCH_REALTEK) := 0x00108000
164# SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
165ifeq ($(CONFIG_ARCH_SA1100),y)
166textofs-$(CONFIG_SA1111) := 0x00208000
167endif
168textofs-$(CONFIG_ARCH_QCOM_RESERVE_SMEM) := 0x00208000
169textofs-$(CONFIG_ARCH_MESON) := 0x00208000
170textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000
171
172# Machine directory name. This list is sorted alphanumerically
173# by CONFIG_* macro name.
174machine-$(CONFIG_ARCH_ACTIONS) += actions
175machine-$(CONFIG_ARCH_ALPINE) += alpine
176machine-$(CONFIG_ARCH_ARTPEC) += artpec
177machine-$(CONFIG_ARCH_ASPEED) += aspeed
178machine-$(CONFIG_ARCH_AT91) += at91
179machine-$(CONFIG_ARCH_AXXIA) += axxia
180machine-$(CONFIG_ARCH_BCM) += bcm
181machine-$(CONFIG_ARCH_BERLIN) += berlin
182machine-$(CONFIG_ARCH_CLPS711X) += clps711x
183machine-$(CONFIG_ARCH_DAVINCI) += davinci
184machine-$(CONFIG_ARCH_DIGICOLOR) += digicolor
185machine-$(CONFIG_ARCH_DOVE) += dove
186machine-$(CONFIG_ARCH_EXYNOS) += exynos
187machine-$(CONFIG_ARCH_FOOTBRIDGE) += footbridge
188machine-$(CONFIG_ARCH_GEMINI) += gemini
189machine-$(CONFIG_ARCH_HIGHBANK) += highbank
190machine-$(CONFIG_ARCH_HISI) += hisi
191machine-$(CONFIG_ARCH_HPE) += hpe
192machine-$(CONFIG_ARCH_IXP4XX) += ixp4xx
193machine-$(CONFIG_ARCH_KEYSTONE) += keystone
194machine-$(CONFIG_ARCH_LPC18XX) += lpc18xx
195machine-$(CONFIG_ARCH_LPC32XX) += lpc32xx
196machine-$(CONFIG_ARCH_MESON) += meson
197machine-$(CONFIG_ARCH_MMP) += mmp
198machine-$(CONFIG_ARCH_MV78XX0) += mv78xx0
199machine-$(CONFIG_ARCH_MVEBU) += mvebu
200machine-$(CONFIG_ARCH_MXC) += imx
201machine-$(CONFIG_ARCH_MEDIATEK) += mediatek
202machine-$(CONFIG_ARCH_MILBEAUT) += milbeaut
203machine-$(CONFIG_ARCH_MXS) += mxs
204machine-$(CONFIG_ARCH_MSTARV7) += mstar
205machine-$(CONFIG_ARCH_NOMADIK) += nomadik
206machine-$(CONFIG_ARCH_NPCM) += npcm
207machine-$(CONFIG_ARCH_OMAP1) += omap1
208machine-$(CONFIG_ARCH_OMAP2PLUS) += omap2
209machine-$(CONFIG_ARCH_ORION5X) += orion5x
210machine-$(CONFIG_ARCH_PXA) += pxa
211machine-$(CONFIG_ARCH_QCOM) += qcom
212machine-$(CONFIG_ARCH_REALTEK) += realtek
213machine-$(CONFIG_ARCH_ROCKCHIP) += rockchip
214machine-$(CONFIG_ARCH_RPC) += rpc
215machine-$(CONFIG_PLAT_SAMSUNG) += s3c
216machine-$(CONFIG_ARCH_S5PV210) += s5pv210
217machine-$(CONFIG_ARCH_SA1100) += sa1100
218machine-$(CONFIG_ARCH_RENESAS) += shmobile
219machine-$(CONFIG_ARCH_INTEL_SOCFPGA) += socfpga
220machine-$(CONFIG_ARCH_STI) += sti
221machine-$(CONFIG_ARCH_STM32) += stm32
222machine-$(CONFIG_ARCH_SUNXI) += sunxi
223machine-$(CONFIG_ARCH_TEGRA) += tegra
224machine-$(CONFIG_ARCH_U8500) += ux500
225machine-$(CONFIG_ARCH_VT8500) += vt8500
226machine-$(CONFIG_ARCH_ZYNQ) += zynq
227machine-$(CONFIG_PLAT_VERSATILE) += versatile
228machine-$(CONFIG_PLAT_SPEAR) += spear
229
230# legacy platforms provide their own mach/*.h headers globally,
231# these three are mutually exclusive
232machdirs-$(CONFIG_ARCH_FOOTBRIDGE) += arch/arm/mach-footbridge
233machdirs-$(CONFIG_ARCH_RPC) += arch/arm/mach-rpc
234machdirs-$(CONFIG_ARCH_SA1100) += arch/arm/mach-sa1100
235KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%/include,$(machdirs-y))
236
237# The byte offset of the kernel image in RAM from the start of RAM.
238TEXT_OFFSET := $(textofs-y)
239
240export TEXT_OFFSET GZFLAGS MMUEXT
241
242# If we have a machine-specific directory, then include it in the build.
243core-y += $(patsubst %,arch/arm/mach-%/,$(machine-y))
244# For cleaning
245core- += $(patsubst %,arch/arm/mach-%/,$(machine-))
246
247core-$(CONFIG_PLAT_ORION) += arch/arm/plat-orion
248
249libs-y := arch/arm/lib/ $(libs-y)
250
251# Default target when executing plain make
252boot := arch/arm/boot
253ifeq ($(CONFIG_XIP_KERNEL),y)
254KBUILD_IMAGE := $(boot)/xipImage
255else
256KBUILD_IMAGE := $(boot)/zImage
257endif
258
259ifeq ($(CONFIG_STACKPROTECTOR_PER_TASK),y)
260prepare: stack_protector_prepare
261ifeq ($(CONFIG_CC_HAVE_STACKPROTECTOR_TLS),y)
262stack_protector_prepare: prepare0
263 $(eval KBUILD_CFLAGS += \
264 -mstack-protector-guard=tls \
265 -mstack-protector-guard-offset=$(shell \
266 awk '{if ($$2 == "TSK_STACK_CANARY") print $$3;}'\
267 $(objtree)/include/generated/asm-offsets.h))
268else
269stack_protector_prepare: prepare0
270 $(eval SSP_PLUGIN_CFLAGS := \
271 -fplugin-arg-arm_ssp_per_task_plugin-offset=$(shell \
272 awk '{if ($$2 == "TSK_STACK_CANARY") print $$3;}'\
273 $(objtree)/include/generated/asm-offsets.h))
274 $(eval KBUILD_CFLAGS += $(SSP_PLUGIN_CFLAGS))
275 $(eval GCC_PLUGINS_CFLAGS += $(SSP_PLUGIN_CFLAGS))
276endif
277endif
278
279all: $(notdir $(KBUILD_IMAGE))
280
281
282archheaders:
283 $(Q)$(MAKE) $(build)=arch/arm/tools uapi
284
285archprepare:
286 $(Q)$(MAKE) $(build)=arch/arm/tools kapi
287
288# Convert bzImage to zImage
289bzImage: zImage
290
291BOOT_TARGETS = zImage Image xipImage bootpImage uImage
292INSTALL_TARGETS = zinstall uinstall install
293
294PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS)
295
296bootpImage uImage: zImage
297zImage: Image
298
299$(BOOT_TARGETS): vmlinux
300 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
301 @$(kecho) ' Kernel: $(boot)/$@ is ready'
302
303$(INSTALL_TARGETS): KBUILD_IMAGE = $(boot)/$(patsubst %install,%Image,$@)
304$(INSTALL_TARGETS):
305 $(call cmd,install)
306
307vdso-install-$(CONFIG_VDSO) += arch/arm/vdso/vdso.so.dbg
308
309# My testing targets (bypasses dependencies)
310bp:; $(Q)$(MAKE) $(build)=$(boot) $(boot)/bootpImage
311
312include $(srctree)/scripts/Makefile.defconf
313PHONY += multi_v7_lpae_defconfig
314multi_v7_lpae_defconfig:
315 $(call merge_into_defconfig,multi_v7_defconfig,lpae)
316
317define archhelp
318 echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
319 echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
320 echo '* xipImage - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)'
321 echo ' uImage - U-Boot wrapped zImage'
322 echo ' bootpImage - Combined zImage and initial RAM disk'
323 echo ' (supply initrd image via make variable INITRD=<path>)'
324 echo ' install - Install uncompressed kernel'
325 echo ' zinstall - Install compressed kernel'
326 echo ' uinstall - Install U-Boot wrapped compressed kernel'
327 echo ' Install using (your) ~/bin/$(INSTALLKERNEL) or'
328 echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
329 echo ' install to $$(INSTALL_PATH) and run lilo'
330 echo
331 echo ' multi_v7_lpae_defconfig - multi_v7_defconfig with CONFIG_ARM_LPAE enabled'
332endef