Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
[linux-2.6-microblaze.git] / arch / arm / Makefile
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
13 LDFLAGS_vmlinux := --no-undefined -X --pic-veneer -z norelro
14 ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
15 LDFLAGS_vmlinux += --be8
16 KBUILD_LDFLAGS_MODULE   += --be8
17 endif
18
19 GZFLAGS         :=-9
20 #KBUILD_CFLAGS  +=-pipe
21
22 # Never generate .eh_frame
23 KBUILD_CFLAGS   += $(call cc-option,-fno-dwarf2-cfi-asm)
24
25 # This should work on most of the modern platforms
26 KBUILD_DEFCONFIG := multi_v7_defconfig
27
28 # defines filename extension depending memory management type.
29 ifeq ($(CONFIG_MMU),)
30 MMUEXT          := -nommu
31 KBUILD_CFLAGS   += $(call cc-option,-mno-unaligned-access)
32 endif
33
34 ifeq ($(CONFIG_FRAME_POINTER),y)
35 KBUILD_CFLAGS   +=-fno-omit-frame-pointer
36 ifeq ($(CONFIG_CC_IS_GCC),y)
37 KBUILD_CFLAGS += -mapcs -mno-sched-prolog
38 endif
39 endif
40
41 ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
42 KBUILD_CPPFLAGS += -mbig-endian
43 CHECKFLAGS      += -D__ARMEB__
44 KBUILD_LDFLAGS  += -EB
45 else
46 KBUILD_CPPFLAGS += -mlittle-endian
47 CHECKFLAGS      += -D__ARMEL__
48 KBUILD_LDFLAGS  += -EL
49 endif
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 #
57 KBUILD_CFLAGS   += $(call cc-option,-fno-ipa-sra)
58
59 # This selects which instruction set is used.
60 # Note that GCC does not numerically define an architecture version
61 # macro, but instead defines a whole series of macros which makes
62 # testing for a specific architecture or later rather impossible.
63 arch-$(CONFIG_CPU_32v7M)        =-D__LINUX_ARM_ARCH__=7 -march=armv7-m
64 arch-$(CONFIG_CPU_32v7)         =-D__LINUX_ARM_ARCH__=7 -march=armv7-a
65 arch-$(CONFIG_CPU_32v6)         =-D__LINUX_ARM_ARCH__=6 -march=armv6
66 # Only override the compiler option if ARMv6. The ARMv6K extensions are
67 # always available in ARMv7
68 ifeq ($(CONFIG_CPU_32v6),y)
69 arch-$(CONFIG_CPU_32v6K)        =-D__LINUX_ARM_ARCH__=6 -march=armv6k
70 endif
71 arch-$(CONFIG_CPU_32v5)         =-D__LINUX_ARM_ARCH__=5 -march=armv5te
72 arch-$(CONFIG_CPU_32v4T)        =-D__LINUX_ARM_ARCH__=4 -march=armv4t
73 arch-$(CONFIG_CPU_32v4)         =-D__LINUX_ARM_ARCH__=4 -march=armv4
74 arch-$(CONFIG_CPU_32v3)         =-D__LINUX_ARM_ARCH__=3 -march=armv3m
75
76 # Evaluate arch cc-option calls now
77 arch-y := $(arch-y)
78
79 # This selects how we optimise for the processor.
80 tune-$(CONFIG_CPU_ARM7TDMI)     =-mtune=arm7tdmi
81 tune-$(CONFIG_CPU_ARM720T)      =-mtune=arm7tdmi
82 tune-$(CONFIG_CPU_ARM740T)      =-mtune=arm7tdmi
83 tune-$(CONFIG_CPU_ARM9TDMI)     =-mtune=arm9tdmi
84 tune-$(CONFIG_CPU_ARM940T)      =-mtune=arm9tdmi
85 tune-$(CONFIG_CPU_ARM946E)      =-mtune=arm9e
86 tune-$(CONFIG_CPU_ARM920T)      =-mtune=arm9tdmi
87 tune-$(CONFIG_CPU_ARM922T)      =-mtune=arm9tdmi
88 tune-$(CONFIG_CPU_ARM925T)      =-mtune=arm9tdmi
89 tune-$(CONFIG_CPU_ARM926T)      =-mtune=arm9tdmi
90 tune-$(CONFIG_CPU_FA526)        =-mtune=arm9tdmi
91 tune-$(CONFIG_CPU_SA110)        =-mtune=strongarm110
92 tune-$(CONFIG_CPU_SA1100)       =-mtune=strongarm1100
93 tune-$(CONFIG_CPU_XSCALE)       =-mtune=xscale
94 tune-$(CONFIG_CPU_XSC3)         =-mtune=xscale
95 tune-$(CONFIG_CPU_FEROCEON)     =-mtune=xscale
96 tune-$(CONFIG_CPU_V6)           =-mtune=arm1136j-s
97 tune-$(CONFIG_CPU_V6K)          =-mtune=arm1136j-s
98
99 # Evaluate tune cc-option calls now
100 tune-y := $(tune-y)
101
102 ifeq ($(CONFIG_AEABI),y)
103 CFLAGS_ABI      :=-mabi=aapcs-linux -mfpu=vfp
104 else
105 CFLAGS_ABI      :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,)
106 endif
107
108 ifeq ($(CONFIG_ARM_UNWIND),y)
109 CFLAGS_ABI      +=-funwind-tables
110 endif
111
112 ifeq ($(CONFIG_CC_IS_CLANG),y)
113 CFLAGS_ABI      += -meabi gnu
114 endif
115
116 ifeq ($(CONFIG_CURRENT_POINTER_IN_TPIDRURO),y)
117 CFLAGS_ABI      += -mtp=cp15
118 endif
119
120 # Accept old syntax despite ".syntax unified"
121 AFLAGS_NOWARN   :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
122
123 ifeq ($(CONFIG_THUMB2_KERNEL),y)
124 CFLAGS_ISA      :=-mthumb -Wa,-mimplicit-it=always $(AFLAGS_NOWARN)
125 AFLAGS_ISA      :=$(CFLAGS_ISA) -Wa$(comma)-mthumb
126 else
127 CFLAGS_ISA      :=$(call cc-option,-marm,) $(AFLAGS_NOWARN)
128 AFLAGS_ISA      :=$(CFLAGS_ISA)
129 endif
130
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) $(tune-y) -include asm/unified.h -msoft-float
134
135 CHECKFLAGS      += -D__arm__
136
137 #Default value
138 head-y          := arch/arm/kernel/head$(MMUEXT).o
139
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 # Note: the 32kB below this value is reserved for use by the kernel
143 # during boot, and this offset is critical to the functioning of
144 # kexec-tools.
145 textofs-y       := 0x00008000
146 # We don't want the htc bootloader to corrupt kernel during resume
147 textofs-$(CONFIG_PM_H1940)      := 0x00108000
148 # RTD1195 has Boot ROM at start of address space
149 textofs-$(CONFIG_ARCH_REALTEK)  := 0x00108000
150 # SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
151 ifeq ($(CONFIG_ARCH_SA1100),y)
152 textofs-$(CONFIG_SA1111) := 0x00208000
153 endif
154 textofs-$(CONFIG_ARCH_IPQ40XX) := 0x00208000
155 textofs-$(CONFIG_ARCH_MSM8X60) := 0x00208000
156 textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000
157 textofs-$(CONFIG_ARCH_MESON) := 0x00208000
158 textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000
159
160 # Machine directory name.  This list is sorted alphanumerically
161 # by CONFIG_* macro name.
162 machine-$(CONFIG_ARCH_ACTIONS)          += actions
163 machine-$(CONFIG_ARCH_ALPINE)           += alpine
164 machine-$(CONFIG_ARCH_ARTPEC)           += artpec
165 machine-$(CONFIG_ARCH_ASPEED)           += aspeed
166 machine-$(CONFIG_ARCH_AT91)             += at91
167 machine-$(CONFIG_ARCH_AXXIA)            += axxia
168 machine-$(CONFIG_ARCH_BCM)              += bcm
169 machine-$(CONFIG_ARCH_BERLIN)           += berlin
170 machine-$(CONFIG_ARCH_CLPS711X)         += clps711x
171 machine-$(CONFIG_ARCH_CNS3XXX)          += cns3xxx
172 machine-$(CONFIG_ARCH_DAVINCI)          += davinci
173 machine-$(CONFIG_ARCH_DIGICOLOR)        += digicolor
174 machine-$(CONFIG_ARCH_DOVE)             += dove
175 machine-$(CONFIG_ARCH_EP93XX)           += ep93xx
176 machine-$(CONFIG_ARCH_EXYNOS)           += exynos
177 machine-$(CONFIG_ARCH_FOOTBRIDGE)       += footbridge
178 machine-$(CONFIG_ARCH_GEMINI)           += gemini
179 machine-$(CONFIG_ARCH_HIGHBANK)         += highbank
180 machine-$(CONFIG_ARCH_HISI)             += hisi
181 machine-$(CONFIG_ARCH_INTEGRATOR)       += integrator
182 machine-$(CONFIG_ARCH_IOP32X)           += iop32x
183 machine-$(CONFIG_ARCH_IXP4XX)           += ixp4xx
184 machine-$(CONFIG_ARCH_KEYSTONE)         += keystone
185 machine-$(CONFIG_ARCH_LPC18XX)          += lpc18xx
186 machine-$(CONFIG_ARCH_LPC32XX)          += lpc32xx
187 machine-$(CONFIG_ARCH_MESON)            += meson
188 machine-$(CONFIG_ARCH_MMP)              += mmp
189 machine-$(CONFIG_ARCH_MPS2)             += vexpress
190 machine-$(CONFIG_ARCH_MOXART)           += moxart
191 machine-$(CONFIG_ARCH_MV78XX0)          += mv78xx0
192 machine-$(CONFIG_ARCH_MVEBU)            += mvebu
193 machine-$(CONFIG_ARCH_MXC)              += imx
194 machine-$(CONFIG_ARCH_MEDIATEK)         += mediatek
195 machine-$(CONFIG_ARCH_MILBEAUT)         += milbeaut
196 machine-$(CONFIG_ARCH_MXS)              += mxs
197 machine-$(CONFIG_ARCH_MSTARV7)          += mstar
198 machine-$(CONFIG_ARCH_NOMADIK)          += nomadik
199 machine-$(CONFIG_ARCH_NPCM)             += npcm
200 machine-$(CONFIG_ARCH_NSPIRE)           += nspire
201 machine-$(CONFIG_ARCH_OXNAS)            += oxnas
202 machine-$(CONFIG_ARCH_OMAP1)            += omap1
203 machine-$(CONFIG_ARCH_OMAP2PLUS)        += omap2
204 machine-$(CONFIG_ARCH_ORION5X)          += orion5x
205 machine-$(CONFIG_ARCH_PXA)              += pxa
206 machine-$(CONFIG_ARCH_QCOM)             += qcom
207 machine-$(CONFIG_ARCH_RDA)              += rda
208 machine-$(CONFIG_ARCH_REALTEK)          += realtek
209 machine-$(CONFIG_ARCH_REALVIEW)         += realview
210 machine-$(CONFIG_ARCH_ROCKCHIP)         += rockchip
211 machine-$(CONFIG_ARCH_RPC)              += rpc
212 machine-$(CONFIG_PLAT_SAMSUNG)          += s3c
213 machine-$(CONFIG_ARCH_S5PV210)          += s5pv210
214 machine-$(CONFIG_ARCH_SA1100)           += sa1100
215 machine-$(CONFIG_ARCH_RENESAS)          += shmobile
216 machine-$(CONFIG_ARCH_INTEL_SOCFPGA)    += socfpga
217 machine-$(CONFIG_ARCH_STI)              += sti
218 machine-$(CONFIG_ARCH_STM32)            += stm32
219 machine-$(CONFIG_ARCH_SUNXI)            += sunxi
220 machine-$(CONFIG_ARCH_TEGRA)            += tegra
221 machine-$(CONFIG_ARCH_U8500)            += ux500
222 machine-$(CONFIG_ARCH_VERSATILE)        += versatile
223 machine-$(CONFIG_ARCH_VEXPRESS)         += vexpress
224 machine-$(CONFIG_ARCH_VT8500)           += vt8500
225 machine-$(CONFIG_ARCH_ZYNQ)             += zynq
226 machine-$(CONFIG_PLAT_SPEAR)            += spear
227
228 # Platform directory name.  This list is sorted alphanumerically
229 # by CONFIG_* macro name.
230 plat-$(CONFIG_ARCH_OMAP)        += omap
231 plat-$(CONFIG_PLAT_ORION)       += orion
232 plat-$(CONFIG_PLAT_PXA)         += pxa
233 plat-$(CONFIG_PLAT_VERSATILE)   += versatile
234
235 # The byte offset of the kernel image in RAM from the start of RAM.
236 TEXT_OFFSET := $(textofs-y)
237
238 # The first directory contains additional information for the boot setup code
239 ifneq ($(machine-y),)
240 MACHINE  := arch/arm/mach-$(word 1,$(machine-y))/
241 else
242 MACHINE  :=
243 endif
244 ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y)
245 MACHINE  :=
246 endif
247
248 machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y))
249 platdirs := $(patsubst %,arch/arm/plat-%/,$(sort $(plat-y)))
250
251 ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y)
252 ifneq ($(CONFIG_ARM_SINGLE_ARMV7M),y)
253 KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs))
254 endif
255 endif
256
257 export  TEXT_OFFSET GZFLAGS MMUEXT
258
259 # If we have a machine-specific directory, then include it in the build.
260 core-y                          += $(machdirs) $(platdirs)
261
262 # For cleaning
263 core-                           += $(patsubst %,arch/arm/mach-%/, $(machine-))
264 core-                           += $(patsubst %,arch/arm/plat-%/, $(plat-))
265
266 libs-y                          := arch/arm/lib/ $(libs-y)
267
268 # Default target when executing plain make
269 boot := arch/arm/boot
270 ifeq ($(CONFIG_XIP_KERNEL),y)
271 KBUILD_IMAGE := $(boot)/xipImage
272 else
273 KBUILD_IMAGE := $(boot)/zImage
274 endif
275
276 ifeq ($(CONFIG_STACKPROTECTOR_PER_TASK),y)
277 prepare: stack_protector_prepare
278 stack_protector_prepare: prepare0
279         $(eval SSP_PLUGIN_CFLAGS := \
280                 -fplugin-arg-arm_ssp_per_task_plugin-offset=$(shell     \
281                         awk '{if ($$2 == "TSK_STACK_CANARY") print $$3;}'\
282                                 include/generated/asm-offsets.h))
283         $(eval KBUILD_CFLAGS += $(SSP_PLUGIN_CFLAGS))
284         $(eval GCC_PLUGINS_CFLAGS += $(SSP_PLUGIN_CFLAGS))
285 endif
286
287 all:    $(notdir $(KBUILD_IMAGE))
288
289
290 archheaders:
291         $(Q)$(MAKE) $(build)=arch/arm/tools uapi
292
293 archprepare:
294         $(Q)$(MAKE) $(build)=arch/arm/tools kapi
295
296 # Convert bzImage to zImage
297 bzImage: zImage
298
299 BOOT_TARGETS    = zImage Image xipImage bootpImage uImage
300 INSTALL_TARGETS = zinstall uinstall install
301
302 PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS)
303
304 bootpImage uImage: zImage
305 zImage: Image
306
307 $(BOOT_TARGETS): vmlinux
308         $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
309         @$(kecho) '  Kernel: $(boot)/$@ is ready'
310
311 $(INSTALL_TARGETS):
312         $(CONFIG_SHELL) $(srctree)/$(boot)/install.sh "$(KERNELRELEASE)" \
313         $(boot)/$(patsubst %install,%Image,$@) System.map "$(INSTALL_PATH)"
314
315 PHONY += vdso_install
316 vdso_install:
317 ifeq ($(CONFIG_VDSO),y)
318         $(Q)$(MAKE) $(build)=arch/arm/vdso $@
319 endif
320
321 # My testing targets (bypasses dependencies)
322 bp:;    $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage
323
324
325 define archhelp
326   echo  '* zImage        - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
327   echo  '  Image         - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
328   echo  '* xipImage      - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)'
329   echo  '  uImage        - U-Boot wrapped zImage'
330   echo  '  bootpImage    - Combined zImage and initial RAM disk'
331   echo  '                  (supply initrd image via make variable INITRD=<path>)'
332   echo  '  install       - Install uncompressed kernel'
333   echo  '  zinstall      - Install compressed kernel'
334   echo  '  uinstall      - Install U-Boot wrapped compressed kernel'
335   echo  '                  Install using (your) ~/bin/$(INSTALLKERNEL) or'
336   echo  '                  (distribution) /sbin/$(INSTALLKERNEL) or'
337   echo  '                  install to $$(INSTALL_PATH) and run lilo'
338   echo  '  vdso_install  - Install unstripped vdso.so to $$(INSTALL_MOD_PATH)/vdso'
339 endef