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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 := --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
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# This should work on most of the modern platforms
26KBUILD_DEFCONFIG := multi_v7_defconfig
27
28# defines filename extension depending memory management type.
29ifeq ($(CONFIG_MMU),)
30MMUEXT := -nommu
31KBUILD_CFLAGS += $(call cc-option,-mno-unaligned-access)
32endif
33
34ifeq ($(CONFIG_FRAME_POINTER),y)
35KBUILD_CFLAGS +=-fno-omit-frame-pointer
36ifeq ($(CONFIG_CC_IS_GCC),y)
37KBUILD_CFLAGS += -mapcs -mno-sched-prolog
38endif
39endif
40
41ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
42KBUILD_CPPFLAGS += -mbig-endian
43CHECKFLAGS += -D__ARMEB__
44KBUILD_LDFLAGS += -EB
45else
46KBUILD_CPPFLAGS += -mlittle-endian
47CHECKFLAGS += -D__ARMEL__
48KBUILD_LDFLAGS += -EL
49endif
50
51#
52# The Scalar Replacement of Aggregates (SRA) optimization pass in GCC 4.9 and
53# later may result in code being generated that handles signed short and signed
54# char struct members incorrectly. So disable it.
55# (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65932)
56#
57KBUILD_CFLAGS += $(call cc-option,-fno-ipa-sra)
58
59# This selects which instruction set is used.
60# Note that GCC does not numerically define an architecture version
61# macro, but instead defines a whole series of macros which makes
62# testing for a specific architecture or later rather impossible.
63arch-$(CONFIG_CPU_32v7M) =-D__LINUX_ARM_ARCH__=7 -march=armv7-m -Wa,-march=armv7-m
64arch-$(CONFIG_CPU_32v7) =-D__LINUX_ARM_ARCH__=7 $(call cc-option,-march=armv7-a,-march=armv5t -Wa$(comma)-march=armv7-a)
65arch-$(CONFIG_CPU_32v6) =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6,-march=armv5t -Wa$(comma)-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) =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6k,-march=armv5t -Wa$(comma)-march=armv6k)
70endif
71arch-$(CONFIG_CPU_32v5) =-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t)
72arch-$(CONFIG_CPU_32v4T) =-D__LINUX_ARM_ARCH__=4 -march=armv4t
73arch-$(CONFIG_CPU_32v4) =-D__LINUX_ARM_ARCH__=4 -march=armv4
74arch-$(CONFIG_CPU_32v3) =-D__LINUX_ARM_ARCH__=3 -march=armv3m
75
76# Evaluate arch cc-option calls now
77arch-y := $(arch-y)
78
79# This selects how we optimise for the processor.
80tune-$(CONFIG_CPU_ARM7TDMI) =-mtune=arm7tdmi
81tune-$(CONFIG_CPU_ARM720T) =-mtune=arm7tdmi
82tune-$(CONFIG_CPU_ARM740T) =-mtune=arm7tdmi
83tune-$(CONFIG_CPU_ARM9TDMI) =-mtune=arm9tdmi
84tune-$(CONFIG_CPU_ARM940T) =-mtune=arm9tdmi
85tune-$(CONFIG_CPU_ARM946E) =$(call cc-option,-mtune=arm9e,-mtune=arm9tdmi)
86tune-$(CONFIG_CPU_ARM920T) =-mtune=arm9tdmi
87tune-$(CONFIG_CPU_ARM922T) =-mtune=arm9tdmi
88tune-$(CONFIG_CPU_ARM925T) =-mtune=arm9tdmi
89tune-$(CONFIG_CPU_ARM926T) =-mtune=arm9tdmi
90tune-$(CONFIG_CPU_FA526) =-mtune=arm9tdmi
91tune-$(CONFIG_CPU_SA110) =-mtune=strongarm110
92tune-$(CONFIG_CPU_SA1100) =-mtune=strongarm1100
93tune-$(CONFIG_CPU_XSCALE) =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
94tune-$(CONFIG_CPU_XSC3) =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
95tune-$(CONFIG_CPU_FEROCEON) =$(call cc-option,-mtune=marvell-f,-mtune=xscale)
96tune-$(CONFIG_CPU_V6) =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
97tune-$(CONFIG_CPU_V6K) =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
98
99# Evaluate tune cc-option calls now
100tune-y := $(tune-y)
101
102ifeq ($(CONFIG_AEABI),y)
103CFLAGS_ABI :=-mabi=aapcs-linux -mfpu=vfp
104else
105CFLAGS_ABI :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,)
106endif
107
108ifeq ($(CONFIG_ARM_UNWIND),y)
109CFLAGS_ABI +=-funwind-tables
110endif
111
112ifeq ($(CONFIG_CC_IS_CLANG),y)
113CFLAGS_ABI += -meabi gnu
114endif
115
116# Accept old syntax despite ".syntax unified"
117AFLAGS_NOWARN :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
118
119ifeq ($(CONFIG_THUMB2_KERNEL),y)
120CFLAGS_ISA :=-mthumb -Wa,-mimplicit-it=always $(AFLAGS_NOWARN)
121AFLAGS_ISA :=$(CFLAGS_ISA) -Wa$(comma)-mthumb
122else
123CFLAGS_ISA :=$(call cc-option,-marm,) $(AFLAGS_NOWARN)
124AFLAGS_ISA :=$(CFLAGS_ISA)
125endif
126
127# Need -Uarm for gcc < 3.x
128KBUILD_CFLAGS +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
129KBUILD_AFLAGS +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float
130
131CHECKFLAGS += -D__arm__
132
133#Default value
134head-y := arch/arm/kernel/head$(MMUEXT).o
135
136# Text offset. This list is sorted numerically by address in order to
137# provide a means to avoid/resolve conflicts in multi-arch kernels.
138# Note: the 32kB below this value is reserved for use by the kernel
139# during boot, and this offset is critical to the functioning of
140# kexec-tools.
141textofs-y := 0x00008000
142# We don't want the htc bootloader to corrupt kernel during resume
143textofs-$(CONFIG_PM_H1940) := 0x00108000
144# RTD1195 has Boot ROM at start of address space
145textofs-$(CONFIG_ARCH_REALTEK) := 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_IPQ40XX) := 0x00208000
151textofs-$(CONFIG_ARCH_MSM8X60) := 0x00208000
152textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000
153textofs-$(CONFIG_ARCH_MESON) := 0x00208000
154textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000
155
156# Machine directory name. This list is sorted alphanumerically
157# by CONFIG_* macro name.
158machine-$(CONFIG_ARCH_ACTIONS) += actions
159machine-$(CONFIG_ARCH_ALPINE) += alpine
160machine-$(CONFIG_ARCH_ARTPEC) += artpec
161machine-$(CONFIG_ARCH_ASPEED) += aspeed
162machine-$(CONFIG_ARCH_AT91) += at91
163machine-$(CONFIG_ARCH_AXXIA) += axxia
164machine-$(CONFIG_ARCH_BCM) += bcm
165machine-$(CONFIG_ARCH_BERLIN) += berlin
166machine-$(CONFIG_ARCH_CLPS711X) += clps711x
167machine-$(CONFIG_ARCH_CNS3XXX) += cns3xxx
168machine-$(CONFIG_ARCH_DAVINCI) += davinci
169machine-$(CONFIG_ARCH_DIGICOLOR) += digicolor
170machine-$(CONFIG_ARCH_DOVE) += dove
171machine-$(CONFIG_ARCH_EP93XX) += ep93xx
172machine-$(CONFIG_ARCH_EXYNOS) += exynos
173machine-$(CONFIG_ARCH_FOOTBRIDGE) += footbridge
174machine-$(CONFIG_ARCH_GEMINI) += gemini
175machine-$(CONFIG_ARCH_HIGHBANK) += highbank
176machine-$(CONFIG_ARCH_HISI) += hisi
177machine-$(CONFIG_ARCH_INTEGRATOR) += integrator
178machine-$(CONFIG_ARCH_IOP32X) += iop32x
179machine-$(CONFIG_ARCH_IXP4XX) += ixp4xx
180machine-$(CONFIG_ARCH_KEYSTONE) += keystone
181machine-$(CONFIG_ARCH_LPC18XX) += lpc18xx
182machine-$(CONFIG_ARCH_LPC32XX) += lpc32xx
183machine-$(CONFIG_ARCH_MESON) += meson
184machine-$(CONFIG_ARCH_MMP) += mmp
185machine-$(CONFIG_ARCH_MPS2) += vexpress
186machine-$(CONFIG_ARCH_MOXART) += moxart
187machine-$(CONFIG_ARCH_MV78XX0) += mv78xx0
188machine-$(CONFIG_ARCH_MVEBU) += mvebu
189machine-$(CONFIG_ARCH_MXC) += imx
190machine-$(CONFIG_ARCH_MEDIATEK) += mediatek
191machine-$(CONFIG_ARCH_MILBEAUT) += milbeaut
192machine-$(CONFIG_ARCH_MXS) += mxs
193machine-$(CONFIG_ARCH_MSTARV7) += mstar
194machine-$(CONFIG_ARCH_NOMADIK) += nomadik
195machine-$(CONFIG_ARCH_NPCM) += npcm
196machine-$(CONFIG_ARCH_NSPIRE) += nspire
197machine-$(CONFIG_ARCH_OXNAS) += oxnas
198machine-$(CONFIG_ARCH_OMAP1) += omap1
199machine-$(CONFIG_ARCH_OMAP2PLUS) += omap2
200machine-$(CONFIG_ARCH_ORION5X) += orion5x
201machine-$(CONFIG_ARCH_PXA) += pxa
202machine-$(CONFIG_ARCH_QCOM) += qcom
203machine-$(CONFIG_ARCH_RDA) += rda
204machine-$(CONFIG_ARCH_REALTEK) += realtek
205machine-$(CONFIG_ARCH_REALVIEW) += realview
206machine-$(CONFIG_ARCH_ROCKCHIP) += rockchip
207machine-$(CONFIG_ARCH_RPC) += rpc
208machine-$(CONFIG_PLAT_SAMSUNG) += s3c
209machine-$(CONFIG_ARCH_S5PV210) += s5pv210
210machine-$(CONFIG_ARCH_SA1100) += sa1100
211machine-$(CONFIG_ARCH_RENESAS) += shmobile
212machine-$(CONFIG_ARCH_INTEL_SOCFPGA) += socfpga
213machine-$(CONFIG_ARCH_STI) += sti
214machine-$(CONFIG_ARCH_STM32) += stm32
215machine-$(CONFIG_ARCH_SUNXI) += sunxi
216machine-$(CONFIG_ARCH_TEGRA) += tegra
217machine-$(CONFIG_ARCH_U8500) += ux500
218machine-$(CONFIG_ARCH_VERSATILE) += versatile
219machine-$(CONFIG_ARCH_VEXPRESS) += vexpress
220machine-$(CONFIG_ARCH_VT8500) += vt8500
221machine-$(CONFIG_ARCH_ZYNQ) += zynq
222machine-$(CONFIG_PLAT_SPEAR) += spear
223
224# Platform directory name. This list is sorted alphanumerically
225# by CONFIG_* macro name.
226plat-$(CONFIG_ARCH_OMAP) += omap
227plat-$(CONFIG_PLAT_ORION) += orion
228plat-$(CONFIG_PLAT_PXA) += pxa
229plat-$(CONFIG_PLAT_VERSATILE) += versatile
230
231# The byte offset of the kernel image in RAM from the start of RAM.
232TEXT_OFFSET := $(textofs-y)
233
234# The first directory contains additional information for the boot setup code
235ifneq ($(machine-y),)
236MACHINE := arch/arm/mach-$(word 1,$(machine-y))/
237else
238MACHINE :=
239endif
240ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y)
241MACHINE :=
242endif
243
244machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y))
245platdirs := $(patsubst %,arch/arm/plat-%/,$(sort $(plat-y)))
246
247ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y)
248ifneq ($(CONFIG_ARM_SINGLE_ARMV7M),y)
249KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs))
250endif
251endif
252
253export TEXT_OFFSET GZFLAGS MMUEXT
254
255# If we have a machine-specific directory, then include it in the build.
256core-y += $(machdirs) $(platdirs)
257
258# For cleaning
259core- += $(patsubst %,arch/arm/mach-%/, $(machine-))
260core- += $(patsubst %,arch/arm/plat-%/, $(plat-))
261
262libs-y := arch/arm/lib $(libs-y)
263
264# Default target when executing plain make
265boot := arch/arm/boot
266ifeq ($(CONFIG_XIP_KERNEL),y)
267KBUILD_IMAGE := $(boot)/xipImage
268else
269KBUILD_IMAGE := $(boot)/zImage
270endif
271
272ifeq ($(CONFIG_STACKPROTECTOR_PER_TASK),y)
273prepare: stack_protector_prepare
274stack_protector_prepare: prepare0
275 $(eval SSP_PLUGIN_CFLAGS := \
276 -fplugin-arg-arm_ssp_per_task_plugin-tso=$(shell \
277 awk '{if ($$2 == "THREAD_SZ_ORDER") print $$3;}'\
278 include/generated/asm-offsets.h) \
279 -fplugin-arg-arm_ssp_per_task_plugin-offset=$(shell \
280 awk '{if ($$2 == "TI_STACK_CANARY") print $$3;}'\
281 include/generated/asm-offsets.h))
282 $(eval KBUILD_CFLAGS += $(SSP_PLUGIN_CFLAGS))
283 $(eval GCC_PLUGINS_CFLAGS += $(SSP_PLUGIN_CFLAGS))
284endif
285
286all: $(notdir $(KBUILD_IMAGE))
287
288
289archheaders:
290 $(Q)$(MAKE) $(build)=arch/arm/tools uapi
291
292archprepare:
293 $(Q)$(MAKE) $(build)=arch/arm/tools kapi
294
295# Convert bzImage to zImage
296bzImage: zImage
297
298BOOT_TARGETS = zImage Image xipImage bootpImage uImage
299INSTALL_TARGETS = zinstall uinstall install
300
301PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS)
302
303bootpImage uImage: zImage
304zImage: Image
305
306$(BOOT_TARGETS): vmlinux
307 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
308 @$(kecho) ' Kernel: $(boot)/$@ is ready'
309
310$(INSTALL_TARGETS):
311 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
312
313PHONY += vdso_install
314vdso_install:
315ifeq ($(CONFIG_VDSO),y)
316 $(Q)$(MAKE) $(build)=arch/arm/vdso $@
317endif
318
319# We use MRPROPER_FILES and CLEAN_FILES now
320archclean:
321 $(Q)$(MAKE) $(clean)=$(boot)
322
323# My testing targets (bypasses dependencies)
324bp:; $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage
325
326
327define archhelp
328 echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
329 echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
330 echo '* xipImage - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)'
331 echo ' uImage - U-Boot wrapped zImage'
332 echo ' bootpImage - Combined zImage and initial RAM disk'
333 echo ' (supply initrd image via make variable INITRD=<path>)'
334 echo ' install - Install uncompressed kernel'
335 echo ' zinstall - Install compressed kernel'
336 echo ' uinstall - Install U-Boot wrapped compressed kernel'
337 echo ' Install using (your) ~/bin/$(INSTALLKERNEL) or'
338 echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
339 echo ' install to $$(INSTALL_PATH) and run lilo'
340 echo ' vdso_install - Install unstripped vdso.so to $$(INSTALL_MOD_PATH)/vdso'
341endef