tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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# Ensure linker flags are correct
14LDFLAGS :=
15
16LDFLAGS_vmlinux :=-p --no-undefined -X --pic-veneer
17ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
18LDFLAGS_vmlinux += --be8
19LDFLAGS_MODULE += --be8
20endif
21
22ifeq ($(CONFIG_ARM_MODULE_PLTS),y)
23LDFLAGS_MODULE += -T $(srctree)/arch/arm/kernel/module.lds
24endif
25
26GZFLAGS :=-9
27#KBUILD_CFLAGS +=-pipe
28
29# Never generate .eh_frame
30KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm)
31
32# This should work on most of the modern platforms
33KBUILD_DEFCONFIG := multi_v7_defconfig
34
35# defines filename extension depending memory management type.
36ifeq ($(CONFIG_MMU),)
37MMUEXT := -nommu
38KBUILD_CFLAGS += $(call cc-option,-mno-unaligned-access)
39endif
40
41ifeq ($(CONFIG_FRAME_POINTER),y)
42KBUILD_CFLAGS +=-fno-omit-frame-pointer -mapcs -mno-sched-prolog
43endif
44
45ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
46KBUILD_CPPFLAGS += -mbig-endian
47AS += -EB
48LD += -EB
49else
50KBUILD_CPPFLAGS += -mlittle-endian
51AS += -EL
52LD += -EL
53endif
54
55#
56# The Scalar Replacement of Aggregates (SRA) optimization pass in GCC 4.9 and
57# later may result in code being generated that handles signed short and signed
58# char struct members incorrectly. So disable it.
59# (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65932)
60#
61KBUILD_CFLAGS += $(call cc-option,-fno-ipa-sra)
62
63# This selects which instruction set is used.
64# Note that GCC does not numerically define an architecture version
65# macro, but instead defines a whole series of macros which makes
66# testing for a specific architecture or later rather impossible.
67arch-$(CONFIG_CPU_32v7M) =-D__LINUX_ARM_ARCH__=7 -march=armv7-m -Wa,-march=armv7-m
68arch-$(CONFIG_CPU_32v7) =-D__LINUX_ARM_ARCH__=7 $(call cc-option,-march=armv7-a,-march=armv5t -Wa$(comma)-march=armv7-a)
69arch-$(CONFIG_CPU_32v6) =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6,-march=armv5t -Wa$(comma)-march=armv6)
70# Only override the compiler option if ARMv6. The ARMv6K extensions are
71# always available in ARMv7
72ifeq ($(CONFIG_CPU_32v6),y)
73arch-$(CONFIG_CPU_32v6K) =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6k,-march=armv5t -Wa$(comma)-march=armv6k)
74endif
75arch-$(CONFIG_CPU_32v5) =-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t)
76arch-$(CONFIG_CPU_32v4T) =-D__LINUX_ARM_ARCH__=4 -march=armv4t
77arch-$(CONFIG_CPU_32v4) =-D__LINUX_ARM_ARCH__=4 -march=armv4
78arch-$(CONFIG_CPU_32v3) =-D__LINUX_ARM_ARCH__=3 -march=armv3
79
80# Evaluate arch cc-option calls now
81arch-y := $(arch-y)
82
83# This selects how we optimise for the processor.
84tune-$(CONFIG_CPU_ARM7TDMI) =-mtune=arm7tdmi
85tune-$(CONFIG_CPU_ARM720T) =-mtune=arm7tdmi
86tune-$(CONFIG_CPU_ARM740T) =-mtune=arm7tdmi
87tune-$(CONFIG_CPU_ARM9TDMI) =-mtune=arm9tdmi
88tune-$(CONFIG_CPU_ARM940T) =-mtune=arm9tdmi
89tune-$(CONFIG_CPU_ARM946E) =$(call cc-option,-mtune=arm9e,-mtune=arm9tdmi)
90tune-$(CONFIG_CPU_ARM920T) =-mtune=arm9tdmi
91tune-$(CONFIG_CPU_ARM922T) =-mtune=arm9tdmi
92tune-$(CONFIG_CPU_ARM925T) =-mtune=arm9tdmi
93tune-$(CONFIG_CPU_ARM926T) =-mtune=arm9tdmi
94tune-$(CONFIG_CPU_FA526) =-mtune=arm9tdmi
95tune-$(CONFIG_CPU_SA110) =-mtune=strongarm110
96tune-$(CONFIG_CPU_SA1100) =-mtune=strongarm1100
97tune-$(CONFIG_CPU_XSCALE) =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
98tune-$(CONFIG_CPU_XSC3) =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
99tune-$(CONFIG_CPU_FEROCEON) =$(call cc-option,-mtune=marvell-f,-mtune=xscale)
100tune-$(CONFIG_CPU_V6) =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
101tune-$(CONFIG_CPU_V6K) =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
102
103# Evaluate tune cc-option calls now
104tune-y := $(tune-y)
105
106ifeq ($(CONFIG_AEABI),y)
107CFLAGS_ABI :=-mabi=aapcs-linux -mno-thumb-interwork -mfpu=vfp
108else
109CFLAGS_ABI :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,)
110endif
111
112ifeq ($(CONFIG_ARM_UNWIND),y)
113CFLAGS_ABI +=-funwind-tables
114endif
115
116ifeq ($(CONFIG_THUMB2_KERNEL),y)
117AFLAGS_AUTOIT :=$(call as-option,-Wa$(comma)-mimplicit-it=always,-Wa$(comma)-mauto-it)
118AFLAGS_NOWARN :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
119CFLAGS_ISA :=-mthumb $(AFLAGS_AUTOIT) $(AFLAGS_NOWARN)
120AFLAGS_ISA :=$(CFLAGS_ISA) -Wa$(comma)-mthumb
121# Work around buggy relocation from gas if requested:
122ifeq ($(CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11),y)
123CFLAGS_MODULE +=-fno-optimize-sibling-calls
124endif
125else
126CFLAGS_ISA :=$(call cc-option,-marm,)
127AFLAGS_ISA :=$(CFLAGS_ISA)
128endif
129
130# Need -Uarm for gcc < 3.x
131KBUILD_CFLAGS +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
132KBUILD_AFLAGS +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float
133
134CHECKFLAGS += -D__arm__
135
136#Default value
137head-y := arch/arm/kernel/head$(MMUEXT).o
138
139# Text offset. This list is sorted numerically by address in order to
140# provide a means to avoid/resolve conflicts in multi-arch kernels.
141textofs-y := 0x00008000
142# We don't want the htc bootloader to corrupt kernel during resume
143textofs-$(CONFIG_PM_H1940) := 0x00108000
144# SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
145ifeq ($(CONFIG_ARCH_SA1100),y)
146textofs-$(CONFIG_SA1111) := 0x00208000
147endif
148textofs-$(CONFIG_ARCH_MSM8X60) := 0x00208000
149textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000
150textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000
151
152# Machine directory name. This list is sorted alphanumerically
153# by CONFIG_* macro name.
154machine-$(CONFIG_ARCH_ALPINE) += alpine
155machine-$(CONFIG_ARCH_ARTPEC) += artpec
156machine-$(CONFIG_ARCH_AT91) += at91
157machine-$(CONFIG_ARCH_AXXIA) += axxia
158machine-$(CONFIG_ARCH_BCM) += bcm
159machine-$(CONFIG_ARCH_BERLIN) += berlin
160machine-$(CONFIG_ARCH_CLPS711X) += clps711x
161machine-$(CONFIG_ARCH_CNS3XXX) += cns3xxx
162machine-$(CONFIG_ARCH_DAVINCI) += davinci
163machine-$(CONFIG_ARCH_DIGICOLOR) += digicolor
164machine-$(CONFIG_ARCH_DOVE) += dove
165machine-$(CONFIG_ARCH_EBSA110) += ebsa110
166machine-$(CONFIG_ARCH_EFM32) += efm32
167machine-$(CONFIG_ARCH_EP93XX) += ep93xx
168machine-$(CONFIG_ARCH_EXYNOS) += exynos
169machine-$(CONFIG_ARCH_FOOTBRIDGE) += footbridge
170machine-$(CONFIG_ARCH_GEMINI) += gemini
171machine-$(CONFIG_ARCH_HIGHBANK) += highbank
172machine-$(CONFIG_ARCH_HISI) += hisi
173machine-$(CONFIG_ARCH_INTEGRATOR) += integrator
174machine-$(CONFIG_ARCH_IOP13XX) += iop13xx
175machine-$(CONFIG_ARCH_IOP32X) += iop32x
176machine-$(CONFIG_ARCH_IOP33X) += iop33x
177machine-$(CONFIG_ARCH_IXP4XX) += ixp4xx
178machine-$(CONFIG_ARCH_KEYSTONE) += keystone
179machine-$(CONFIG_ARCH_KS8695) += ks8695
180machine-$(CONFIG_ARCH_LPC18XX) += lpc18xx
181machine-$(CONFIG_ARCH_LPC32XX) += lpc32xx
182machine-$(CONFIG_ARCH_MESON) += meson
183machine-$(CONFIG_ARCH_MMP) += mmp
184machine-$(CONFIG_ARCH_MPS2) += vexpress
185machine-$(CONFIG_ARCH_MOXART) += moxart
186machine-$(CONFIG_ARCH_MV78XX0) += mv78xx0
187machine-$(CONFIG_ARCH_MVEBU) += mvebu
188machine-$(CONFIG_ARCH_MXC) += imx
189machine-$(CONFIG_ARCH_MEDIATEK) += mediatek
190machine-$(CONFIG_ARCH_MXS) += mxs
191machine-$(CONFIG_ARCH_NETX) += netx
192machine-$(CONFIG_ARCH_NOMADIK) += nomadik
193machine-$(CONFIG_ARCH_NSPIRE) += nspire
194machine-$(CONFIG_ARCH_OXNAS) += oxnas
195machine-$(CONFIG_ARCH_OMAP1) += omap1
196machine-$(CONFIG_ARCH_OMAP2PLUS) += omap2
197machine-$(CONFIG_ARCH_ORION5X) += orion5x
198machine-$(CONFIG_ARCH_PICOXCELL) += picoxcell
199machine-$(CONFIG_ARCH_PXA) += pxa
200machine-$(CONFIG_ARCH_QCOM) += qcom
201machine-$(CONFIG_ARCH_REALVIEW) += realview
202machine-$(CONFIG_ARCH_ROCKCHIP) += rockchip
203machine-$(CONFIG_ARCH_RPC) += rpc
204machine-$(CONFIG_ARCH_S3C24XX) += s3c24xx
205machine-$(CONFIG_ARCH_S3C64XX) += s3c64xx
206machine-$(CONFIG_ARCH_S5PV210) += s5pv210
207machine-$(CONFIG_ARCH_SA1100) += sa1100
208machine-$(CONFIG_ARCH_SHMOBILE) += shmobile
209machine-$(CONFIG_ARCH_SIRF) += prima2
210machine-$(CONFIG_ARCH_SOCFPGA) += socfpga
211machine-$(CONFIG_ARCH_STI) += sti
212machine-$(CONFIG_ARCH_STM32) += stm32
213machine-$(CONFIG_ARCH_SUNXI) += sunxi
214machine-$(CONFIG_ARCH_TANGO) += tango
215machine-$(CONFIG_ARCH_TEGRA) += tegra
216machine-$(CONFIG_ARCH_U300) += u300
217machine-$(CONFIG_ARCH_U8500) += ux500
218machine-$(CONFIG_ARCH_UNIPHIER) += uniphier
219machine-$(CONFIG_ARCH_VERSATILE) += versatile
220machine-$(CONFIG_ARCH_VEXPRESS) += vexpress
221machine-$(CONFIG_ARCH_VT8500) += vt8500
222machine-$(CONFIG_ARCH_W90X900) += w90x900
223machine-$(CONFIG_ARCH_ZX) += zx
224machine-$(CONFIG_ARCH_ZYNQ) += zynq
225machine-$(CONFIG_PLAT_SPEAR) += spear
226
227# Platform directory name. This list is sorted alphanumerically
228# by CONFIG_* macro name.
229plat-$(CONFIG_ARCH_EXYNOS) += samsung
230plat-$(CONFIG_ARCH_OMAP) += omap
231plat-$(CONFIG_ARCH_S3C64XX) += samsung
232plat-$(CONFIG_ARCH_S5PV210) += samsung
233plat-$(CONFIG_PLAT_IOP) += iop
234plat-$(CONFIG_PLAT_ORION) += orion
235plat-$(CONFIG_PLAT_PXA) += pxa
236plat-$(CONFIG_PLAT_S3C24XX) += samsung
237plat-$(CONFIG_PLAT_VERSATILE) += versatile
238
239ifeq ($(CONFIG_ARCH_EBSA110),y)
240# This is what happens if you forget the IOCS16 line.
241# PCMCIA cards stop working.
242CFLAGS_3c589_cs.o :=-DISA_SIXTEEN_BIT_PERIPHERAL
243export CFLAGS_3c589_cs.o
244endif
245
246# The byte offset of the kernel image in RAM from the start of RAM.
247TEXT_OFFSET := $(textofs-y)
248
249# The first directory contains additional information for the boot setup code
250ifneq ($(machine-y),)
251MACHINE := arch/arm/mach-$(word 1,$(machine-y))/
252else
253MACHINE :=
254endif
255ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y)
256MACHINE :=
257endif
258
259machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y))
260platdirs := $(patsubst %,arch/arm/plat-%/,$(sort $(plat-y)))
261
262ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y)
263ifneq ($(CONFIG_ARM_SINGLE_ARMV7M),y)
264ifeq ($(KBUILD_SRC),)
265KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(machdirs) $(platdirs))
266else
267KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs))
268endif
269endif
270endif
271
272export TEXT_OFFSET GZFLAGS MMUEXT
273
274# Do we have FASTFPE?
275FASTFPE :=arch/arm/fastfpe
276ifeq ($(FASTFPE),$(wildcard $(FASTFPE)))
277FASTFPE_OBJ :=$(FASTFPE)/
278endif
279
280core-$(CONFIG_FPE_NWFPE) += arch/arm/nwfpe/
281core-$(CONFIG_FPE_FASTFPE) += $(FASTFPE_OBJ)
282core-$(CONFIG_VFP) += arch/arm/vfp/
283core-$(CONFIG_XEN) += arch/arm/xen/
284core-$(CONFIG_KVM_ARM_HOST) += arch/arm/kvm/
285core-$(CONFIG_VDSO) += arch/arm/vdso/
286
287# If we have a machine-specific directory, then include it in the build.
288core-y += arch/arm/kernel/ arch/arm/mm/ arch/arm/common/
289core-y += arch/arm/probes/
290core-y += arch/arm/net/
291core-y += arch/arm/crypto/
292core-y += arch/arm/firmware/
293core-y += $(machdirs) $(platdirs)
294
295drivers-$(CONFIG_OPROFILE) += arch/arm/oprofile/
296
297libs-y := arch/arm/lib/ $(libs-y)
298
299# Default target when executing plain make
300ifeq ($(CONFIG_XIP_KERNEL),y)
301KBUILD_IMAGE := xipImage
302else
303KBUILD_IMAGE := zImage
304endif
305
306# Build the DT binary blobs if we have OF configured
307ifeq ($(CONFIG_USE_OF),y)
308KBUILD_DTBS := dtbs
309endif
310
311all: $(KBUILD_IMAGE) $(KBUILD_DTBS)
312
313boot := arch/arm/boot
314
315archheaders:
316 $(Q)$(MAKE) $(build)=arch/arm/tools uapi
317
318archprepare:
319 $(Q)$(MAKE) $(build)=arch/arm/tools kapi
320
321# Convert bzImage to zImage
322bzImage: zImage
323
324BOOT_TARGETS = zImage Image xipImage bootpImage uImage
325INSTALL_TARGETS = zinstall uinstall install
326
327PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS)
328
329bootpImage uImage: zImage
330zImage: Image
331
332$(BOOT_TARGETS): vmlinux
333 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
334 @$(kecho) ' Kernel: $(boot)/$@ is ready'
335
336$(INSTALL_TARGETS):
337 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
338
339%.dtb: | scripts
340 $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
341
342PHONY += dtbs dtbs_install
343
344dtbs: prepare scripts
345 $(Q)$(MAKE) $(build)=$(boot)/dts
346
347dtbs_install:
348 $(Q)$(MAKE) $(dtbinst)=$(boot)/dts
349
350PHONY += vdso_install
351vdso_install:
352ifeq ($(CONFIG_VDSO),y)
353 $(Q)$(MAKE) $(build)=arch/arm/vdso $@
354endif
355
356# We use MRPROPER_FILES and CLEAN_FILES now
357archclean:
358 $(Q)$(MAKE) $(clean)=$(boot)
359
360# My testing targets (bypasses dependencies)
361bp:; $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage
362
363
364define archhelp
365 echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
366 echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
367 echo '* xipImage - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)'
368 echo ' uImage - U-Boot wrapped zImage'
369 echo ' bootpImage - Combined zImage and initial RAM disk'
370 echo ' (supply initrd image via make variable INITRD=<path>)'
371 echo '* dtbs - Build device tree blobs for enabled boards'
372 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'
373 echo ' install - Install uncompressed kernel'
374 echo ' zinstall - Install compressed kernel'
375 echo ' uinstall - Install U-Boot wrapped compressed kernel'
376 echo ' Install using (your) ~/bin/$(INSTALLKERNEL) or'
377 echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
378 echo ' install to $$(INSTALL_PATH) and run lilo'
379 echo ' vdso_install - Install unstripped vdso.so to $$(INSTALL_MOD_PATH)/vdso'
380endef