Loading...
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# 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
133ifeq ($(CONFIG_THUMB2_KERNEL),y)
134CFLAGS_ISA :=-Wa,-mimplicit-it=always $(AFLAGS_NOWARN)
135AFLAGS_ISA :=$(CFLAGS_ISA) -Wa$(comma)-mthumb
136CFLAGS_ISA +=-mthumb
137else
138CFLAGS_ISA :=$(call cc-option,-marm,) $(AFLAGS_NOWARN)
139AFLAGS_ISA :=$(CFLAGS_ISA)
140endif
141
142# Need -Uarm for gcc < 3.x
143KBUILD_CPPFLAGS +=$(cpp-y)
144KBUILD_CFLAGS +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
145KBUILD_AFLAGS +=$(CFLAGS_ABI) $(AFLAGS_ISA) -Wa,$(arch-y) $(tune-y) -include asm/unified.h -msoft-float
146
147CHECKFLAGS += -D__arm__
148
149# Text offset. This list is sorted numerically by address in order to
150# provide a means to avoid/resolve conflicts in multi-arch kernels.
151# Note: the 32kB below this value is reserved for use by the kernel
152# during boot, and this offset is critical to the functioning of
153# kexec-tools.
154textofs-y := 0x00008000
155# We don't want the htc bootloader to corrupt kernel during resume
156textofs-$(CONFIG_PM_H1940) := 0x00108000
157# RTD1195 has Boot ROM at start of address space
158textofs-$(CONFIG_ARCH_REALTEK) := 0x00108000
159# SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
160ifeq ($(CONFIG_ARCH_SA1100),y)
161textofs-$(CONFIG_SA1111) := 0x00208000
162endif
163textofs-$(CONFIG_ARCH_IPQ40XX) := 0x00208000
164textofs-$(CONFIG_ARCH_MSM8X60) := 0x00208000
165textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000
166textofs-$(CONFIG_ARCH_MESON) := 0x00208000
167textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000
168
169# Machine directory name. This list is sorted alphanumerically
170# by CONFIG_* macro name.
171machine-$(CONFIG_ARCH_ACTIONS) += actions
172machine-$(CONFIG_ARCH_AIROHA) += airoha
173machine-$(CONFIG_ARCH_ALPINE) += alpine
174machine-$(CONFIG_ARCH_ARTPEC) += artpec
175machine-$(CONFIG_ARCH_ASPEED) += aspeed
176machine-$(CONFIG_ARCH_AT91) += at91
177machine-$(CONFIG_ARCH_AXXIA) += axxia
178machine-$(CONFIG_ARCH_BCM) += bcm
179machine-$(CONFIG_ARCH_BERLIN) += berlin
180machine-$(CONFIG_ARCH_CLPS711X) += clps711x
181machine-$(CONFIG_ARCH_CNS3XXX) += cns3xxx
182machine-$(CONFIG_ARCH_DAVINCI) += davinci
183machine-$(CONFIG_ARCH_DIGICOLOR) += digicolor
184machine-$(CONFIG_ARCH_DOVE) += dove
185machine-$(CONFIG_ARCH_EP93XX) += ep93xx
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_IOP32X) += iop32x
193machine-$(CONFIG_ARCH_IXP4XX) += ixp4xx
194machine-$(CONFIG_ARCH_KEYSTONE) += keystone
195machine-$(CONFIG_ARCH_LPC18XX) += lpc18xx
196machine-$(CONFIG_ARCH_LPC32XX) += lpc32xx
197machine-$(CONFIG_ARCH_MESON) += meson
198machine-$(CONFIG_ARCH_MMP) += mmp
199machine-$(CONFIG_ARCH_MOXART) += moxart
200machine-$(CONFIG_ARCH_MV78XX0) += mv78xx0
201machine-$(CONFIG_ARCH_MVEBU) += mvebu
202machine-$(CONFIG_ARCH_MXC) += imx
203machine-$(CONFIG_ARCH_MEDIATEK) += mediatek
204machine-$(CONFIG_ARCH_MILBEAUT) += milbeaut
205machine-$(CONFIG_ARCH_MXS) += mxs
206machine-$(CONFIG_ARCH_MSTARV7) += mstar
207machine-$(CONFIG_ARCH_NOMADIK) += nomadik
208machine-$(CONFIG_ARCH_NPCM) += npcm
209machine-$(CONFIG_ARCH_NSPIRE) += nspire
210machine-$(CONFIG_ARCH_OXNAS) += oxnas
211machine-$(CONFIG_ARCH_OMAP1) += omap1
212machine-$(CONFIG_ARCH_OMAP2PLUS) += omap2
213machine-$(CONFIG_ARCH_ORION5X) += orion5x
214machine-$(CONFIG_ARCH_PXA) += pxa
215machine-$(CONFIG_ARCH_QCOM) += qcom
216machine-$(CONFIG_ARCH_RDA) += rda
217machine-$(CONFIG_ARCH_REALTEK) += realtek
218machine-$(CONFIG_ARCH_ROCKCHIP) += rockchip
219machine-$(CONFIG_ARCH_RPC) += rpc
220machine-$(CONFIG_PLAT_SAMSUNG) += s3c
221machine-$(CONFIG_ARCH_S5PV210) += s5pv210
222machine-$(CONFIG_ARCH_SA1100) += sa1100
223machine-$(CONFIG_ARCH_RENESAS) += shmobile
224machine-$(CONFIG_ARCH_INTEL_SOCFPGA) += socfpga
225machine-$(CONFIG_ARCH_STI) += sti
226machine-$(CONFIG_ARCH_STM32) += stm32
227machine-$(CONFIG_ARCH_SUNPLUS) += sunplus
228machine-$(CONFIG_ARCH_SUNXI) += sunxi
229machine-$(CONFIG_ARCH_TEGRA) += tegra
230machine-$(CONFIG_ARCH_U8500) += ux500
231machine-$(CONFIG_ARCH_VT8500) += vt8500
232machine-$(CONFIG_ARCH_ZYNQ) += zynq
233machine-$(CONFIG_PLAT_VERSATILE) += versatile
234machine-$(CONFIG_PLAT_SPEAR) += spear
235
236# legacy platforms provide their own mach/*.h headers globally,
237# these three are mutually exclusive
238machdirs-$(CONFIG_ARCH_FOOTBRIDGE) += arch/arm/mach-footbridge
239machdirs-$(CONFIG_ARCH_RPC) += arch/arm/mach-rpc
240machdirs-$(CONFIG_ARCH_SA1100) += arch/arm/mach-sa1100
241KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%/include,$(machdirs-y))
242
243# The byte offset of the kernel image in RAM from the start of RAM.
244TEXT_OFFSET := $(textofs-y)
245
246export TEXT_OFFSET GZFLAGS MMUEXT
247
248# If we have a machine-specific directory, then include it in the build.
249core-y += $(patsubst %,arch/arm/mach-%/,$(machine-y))
250# For cleaning
251core- += $(patsubst %,arch/arm/mach-%/,$(machine-))
252
253core-$(CONFIG_PLAT_ORION) += arch/arm/plat-orion
254
255libs-y := arch/arm/lib/ $(libs-y)
256
257# Default target when executing plain make
258boot := arch/arm/boot
259ifeq ($(CONFIG_XIP_KERNEL),y)
260KBUILD_IMAGE := $(boot)/xipImage
261else
262KBUILD_IMAGE := $(boot)/zImage
263endif
264
265ifeq ($(CONFIG_STACKPROTECTOR_PER_TASK),y)
266prepare: stack_protector_prepare
267ifeq ($(CONFIG_CC_HAVE_STACKPROTECTOR_TLS),y)
268stack_protector_prepare: prepare0
269 $(eval KBUILD_CFLAGS += \
270 -mstack-protector-guard=tls \
271 -mstack-protector-guard-offset=$(shell \
272 awk '{if ($$2 == "TSK_STACK_CANARY") print $$3;}'\
273 include/generated/asm-offsets.h))
274else
275stack_protector_prepare: prepare0
276 $(eval SSP_PLUGIN_CFLAGS := \
277 -fplugin-arg-arm_ssp_per_task_plugin-offset=$(shell \
278 awk '{if ($$2 == "TSK_STACK_CANARY") print $$3;}'\
279 include/generated/asm-offsets.h))
280 $(eval KBUILD_CFLAGS += $(SSP_PLUGIN_CFLAGS))
281 $(eval GCC_PLUGINS_CFLAGS += $(SSP_PLUGIN_CFLAGS))
282endif
283endif
284
285all: $(notdir $(KBUILD_IMAGE))
286
287
288archheaders:
289 $(Q)$(MAKE) $(build)=arch/arm/tools uapi
290
291archprepare:
292 $(Q)$(MAKE) $(build)=arch/arm/tools kapi
293
294# Convert bzImage to zImage
295bzImage: zImage
296
297BOOT_TARGETS = zImage Image xipImage bootpImage uImage
298INSTALL_TARGETS = zinstall uinstall install
299
300PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS)
301
302bootpImage uImage: zImage
303zImage: Image
304
305$(BOOT_TARGETS): vmlinux
306 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
307 @$(kecho) ' Kernel: $(boot)/$@ is ready'
308
309$(INSTALL_TARGETS): KBUILD_IMAGE = $(boot)/$(patsubst %install,%Image,$@)
310$(INSTALL_TARGETS):
311 $(call cmd,install)
312
313PHONY += vdso_install
314vdso_install:
315ifeq ($(CONFIG_VDSO),y)
316 $(Q)$(MAKE) $(build)=arch/arm/vdso $@
317endif
318
319# My testing targets (bypasses dependencies)
320bp:; $(Q)$(MAKE) $(build)=$(boot) $(boot)/bootpImage
321
322
323define archhelp
324 echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
325 echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
326 echo '* xipImage - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)'
327 echo ' uImage - U-Boot wrapped zImage'
328 echo ' bootpImage - Combined zImage and initial RAM disk'
329 echo ' (supply initrd image via make variable INITRD=<path>)'
330 echo ' install - Install uncompressed kernel'
331 echo ' zinstall - Install compressed kernel'
332 echo ' uinstall - Install U-Boot wrapped compressed kernel'
333 echo ' Install using (your) ~/bin/$(INSTALLKERNEL) or'
334 echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
335 echo ' install to $$(INSTALL_PATH) and run lilo'
336 echo ' vdso_install - Install unstripped vdso.so to $$(INSTALL_MOD_PATH)/vdso'
337endef