Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
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
26OBJCOPYFLAGS :=-O binary -R .comment -S
27GZFLAGS :=-9
28#KBUILD_CFLAGS +=-pipe
29
30# Never generate .eh_frame
31KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm)
32
33# This should work on most of the modern platforms
34KBUILD_DEFCONFIG := multi_v7_defconfig
35
36# defines filename extension depending memory management type.
37ifeq ($(CONFIG_MMU),)
38MMUEXT := -nommu
39KBUILD_CFLAGS += $(call cc-option,-mno-unaligned-access)
40endif
41
42ifeq ($(CONFIG_FRAME_POINTER),y)
43KBUILD_CFLAGS +=-fno-omit-frame-pointer -mapcs -mno-sched-prolog
44endif
45
46ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
47KBUILD_CPPFLAGS += -mbig-endian
48AS += -EB
49LD += -EB
50else
51KBUILD_CPPFLAGS += -mlittle-endian
52AS += -EL
53LD += -EL
54endif
55
56#
57# The Scalar Replacement of Aggregates (SRA) optimization pass in GCC 4.9 and
58# later may result in code being generated that handles signed short and signed
59# char struct members incorrectly. So disable it.
60# (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65932)
61#
62KBUILD_CFLAGS += $(call cc-option,-fno-ipa-sra)
63
64# This selects which instruction set is used.
65# Note that GCC does not numerically define an architecture version
66# macro, but instead defines a whole series of macros which makes
67# testing for a specific architecture or later rather impossible.
68arch-$(CONFIG_CPU_32v7M) =-D__LINUX_ARM_ARCH__=7 -march=armv7-m -Wa,-march=armv7-m
69arch-$(CONFIG_CPU_32v7) =-D__LINUX_ARM_ARCH__=7 $(call cc-option,-march=armv7-a,-march=armv5t -Wa$(comma)-march=armv7-a)
70arch-$(CONFIG_CPU_32v6) =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6,-march=armv5t -Wa$(comma)-march=armv6)
71# Only override the compiler option if ARMv6. The ARMv6K extensions are
72# always available in ARMv7
73ifeq ($(CONFIG_CPU_32v6),y)
74arch-$(CONFIG_CPU_32v6K) =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6k,-march=armv5t -Wa$(comma)-march=armv6k)
75endif
76arch-$(CONFIG_CPU_32v5) =-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t)
77arch-$(CONFIG_CPU_32v4T) =-D__LINUX_ARM_ARCH__=4 -march=armv4t
78arch-$(CONFIG_CPU_32v4) =-D__LINUX_ARM_ARCH__=4 -march=armv4
79arch-$(CONFIG_CPU_32v3) =-D__LINUX_ARM_ARCH__=3 -march=armv3
80
81# Evaluate arch cc-option calls now
82arch-y := $(arch-y)
83
84# This selects how we optimise for the processor.
85tune-$(CONFIG_CPU_ARM7TDMI) =-mtune=arm7tdmi
86tune-$(CONFIG_CPU_ARM720T) =-mtune=arm7tdmi
87tune-$(CONFIG_CPU_ARM740T) =-mtune=arm7tdmi
88tune-$(CONFIG_CPU_ARM9TDMI) =-mtune=arm9tdmi
89tune-$(CONFIG_CPU_ARM940T) =-mtune=arm9tdmi
90tune-$(CONFIG_CPU_ARM946E) =$(call cc-option,-mtune=arm9e,-mtune=arm9tdmi)
91tune-$(CONFIG_CPU_ARM920T) =-mtune=arm9tdmi
92tune-$(CONFIG_CPU_ARM922T) =-mtune=arm9tdmi
93tune-$(CONFIG_CPU_ARM925T) =-mtune=arm9tdmi
94tune-$(CONFIG_CPU_ARM926T) =-mtune=arm9tdmi
95tune-$(CONFIG_CPU_FA526) =-mtune=arm9tdmi
96tune-$(CONFIG_CPU_SA110) =-mtune=strongarm110
97tune-$(CONFIG_CPU_SA1100) =-mtune=strongarm1100
98tune-$(CONFIG_CPU_XSCALE) =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
99tune-$(CONFIG_CPU_XSC3) =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
100tune-$(CONFIG_CPU_FEROCEON) =$(call cc-option,-mtune=marvell-f,-mtune=xscale)
101tune-$(CONFIG_CPU_V6) =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
102tune-$(CONFIG_CPU_V6K) =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
103
104# Evaluate tune cc-option calls now
105tune-y := $(tune-y)
106
107ifeq ($(CONFIG_AEABI),y)
108CFLAGS_ABI :=-mabi=aapcs-linux -mno-thumb-interwork -mfpu=vfp
109else
110CFLAGS_ABI :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,)
111endif
112
113ifeq ($(CONFIG_ARM_UNWIND),y)
114CFLAGS_ABI +=-funwind-tables
115endif
116
117ifeq ($(CONFIG_THUMB2_KERNEL),y)
118AFLAGS_AUTOIT :=$(call as-option,-Wa$(comma)-mimplicit-it=always,-Wa$(comma)-mauto-it)
119AFLAGS_NOWARN :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
120CFLAGS_ISA :=-mthumb $(AFLAGS_AUTOIT) $(AFLAGS_NOWARN)
121AFLAGS_ISA :=$(CFLAGS_ISA) -Wa$(comma)-mthumb
122# Work around buggy relocation from gas if requested:
123ifeq ($(CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11),y)
124CFLAGS_MODULE +=-fno-optimize-sibling-calls
125endif
126else
127CFLAGS_ISA :=$(call cc-option,-marm,)
128AFLAGS_ISA :=$(CFLAGS_ISA)
129endif
130
131# Need -Uarm for gcc < 3.x
132KBUILD_CFLAGS +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
133KBUILD_AFLAGS +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float
134
135CHECKFLAGS += -D__arm__
136
137#Default value
138head-y := arch/arm/kernel/head$(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.
142textofs-y := 0x00008000
143textofs-$(CONFIG_ARCH_CLPS711X) := 0x00028000
144# We don't want the htc bootloader to corrupt kernel during resume
145textofs-$(CONFIG_PM_H1940) := 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-$(CONFIG_ARCH_MSM8X60) := 0x00208000
151textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000
152textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000
153
154# Machine directory name. This list is sorted alphanumerically
155# by CONFIG_* macro name.
156machine-$(CONFIG_ARCH_ALPINE) += alpine
157machine-$(CONFIG_ARCH_ARTPEC) += artpec
158machine-$(CONFIG_ARCH_AT91) += at91
159machine-$(CONFIG_ARCH_AXXIA) += axxia
160machine-$(CONFIG_ARCH_BCM) += bcm
161machine-$(CONFIG_ARCH_BERLIN) += berlin
162machine-$(CONFIG_ARCH_CLPS711X) += clps711x
163machine-$(CONFIG_ARCH_CNS3XXX) += cns3xxx
164machine-$(CONFIG_ARCH_DAVINCI) += davinci
165machine-$(CONFIG_ARCH_DIGICOLOR) += digicolor
166machine-$(CONFIG_ARCH_DOVE) += dove
167machine-$(CONFIG_ARCH_EBSA110) += ebsa110
168machine-$(CONFIG_ARCH_EFM32) += efm32
169machine-$(CONFIG_ARCH_EP93XX) += ep93xx
170machine-$(CONFIG_ARCH_EXYNOS) += exynos
171machine-$(CONFIG_ARCH_FOOTBRIDGE) += footbridge
172machine-$(CONFIG_ARCH_GEMINI) += gemini
173machine-$(CONFIG_ARCH_HIGHBANK) += highbank
174machine-$(CONFIG_ARCH_HISI) += hisi
175machine-$(CONFIG_ARCH_INTEGRATOR) += integrator
176machine-$(CONFIG_ARCH_IOP13XX) += iop13xx
177machine-$(CONFIG_ARCH_IOP32X) += iop32x
178machine-$(CONFIG_ARCH_IOP33X) += iop33x
179machine-$(CONFIG_ARCH_IXP4XX) += ixp4xx
180machine-$(CONFIG_ARCH_KEYSTONE) += keystone
181machine-$(CONFIG_ARCH_KS8695) += ks8695
182machine-$(CONFIG_ARCH_LPC18XX) += lpc18xx
183machine-$(CONFIG_ARCH_LPC32XX) += lpc32xx
184machine-$(CONFIG_ARCH_MESON) += meson
185machine-$(CONFIG_ARCH_MMP) += mmp
186machine-$(CONFIG_ARCH_MPS2) += vexpress
187machine-$(CONFIG_ARCH_MOXART) += moxart
188machine-$(CONFIG_ARCH_MV78XX0) += mv78xx0
189machine-$(CONFIG_ARCH_MVEBU) += mvebu
190machine-$(CONFIG_ARCH_MXC) += imx
191machine-$(CONFIG_ARCH_MEDIATEK) += mediatek
192machine-$(CONFIG_ARCH_MXS) += mxs
193machine-$(CONFIG_ARCH_NETX) += netx
194machine-$(CONFIG_ARCH_NOMADIK) += nomadik
195machine-$(CONFIG_ARCH_NSPIRE) += nspire
196machine-$(CONFIG_ARCH_OMAP1) += omap1
197machine-$(CONFIG_ARCH_OMAP2PLUS) += omap2
198machine-$(CONFIG_ARCH_ORION5X) += orion5x
199machine-$(CONFIG_ARCH_PICOXCELL) += picoxcell
200machine-$(CONFIG_ARCH_PXA) += pxa
201machine-$(CONFIG_ARCH_QCOM) += qcom
202machine-$(CONFIG_ARCH_REALVIEW) += realview
203machine-$(CONFIG_ARCH_ROCKCHIP) += rockchip
204machine-$(CONFIG_ARCH_RPC) += rpc
205machine-$(CONFIG_ARCH_S3C24XX) += s3c24xx
206machine-$(CONFIG_ARCH_S3C64XX) += s3c64xx
207machine-$(CONFIG_ARCH_S5PV210) += s5pv210
208machine-$(CONFIG_ARCH_SA1100) += sa1100
209machine-$(CONFIG_ARCH_SHMOBILE) += shmobile
210machine-$(CONFIG_ARCH_SIRF) += prima2
211machine-$(CONFIG_ARCH_SOCFPGA) += socfpga
212machine-$(CONFIG_ARCH_STI) += sti
213machine-$(CONFIG_ARCH_STM32) += stm32
214machine-$(CONFIG_ARCH_SUNXI) += sunxi
215machine-$(CONFIG_ARCH_TANGO) += tango
216machine-$(CONFIG_ARCH_TEGRA) += tegra
217machine-$(CONFIG_ARCH_U300) += u300
218machine-$(CONFIG_ARCH_U8500) += ux500
219machine-$(CONFIG_ARCH_UNIPHIER) += uniphier
220machine-$(CONFIG_ARCH_VERSATILE) += versatile
221machine-$(CONFIG_ARCH_VEXPRESS) += vexpress
222machine-$(CONFIG_ARCH_VT8500) += vt8500
223machine-$(CONFIG_ARCH_W90X900) += w90x900
224machine-$(CONFIG_ARCH_ZX) += zx
225machine-$(CONFIG_ARCH_ZYNQ) += zynq
226machine-$(CONFIG_PLAT_SPEAR) += spear
227
228# Platform directory name. This list is sorted alphanumerically
229# by CONFIG_* macro name.
230plat-$(CONFIG_ARCH_EXYNOS) += samsung
231plat-$(CONFIG_ARCH_OMAP) += omap
232plat-$(CONFIG_ARCH_S3C64XX) += samsung
233plat-$(CONFIG_ARCH_S5PV210) += samsung
234plat-$(CONFIG_PLAT_IOP) += iop
235plat-$(CONFIG_PLAT_ORION) += orion
236plat-$(CONFIG_PLAT_PXA) += pxa
237plat-$(CONFIG_PLAT_S3C24XX) += samsung
238plat-$(CONFIG_PLAT_VERSATILE) += versatile
239
240ifeq ($(CONFIG_ARCH_EBSA110),y)
241# This is what happens if you forget the IOCS16 line.
242# PCMCIA cards stop working.
243CFLAGS_3c589_cs.o :=-DISA_SIXTEEN_BIT_PERIPHERAL
244export CFLAGS_3c589_cs.o
245endif
246
247# The byte offset of the kernel image in RAM from the start of RAM.
248TEXT_OFFSET := $(textofs-y)
249
250# The first directory contains additional information for the boot setup code
251ifneq ($(machine-y),)
252MACHINE := arch/arm/mach-$(word 1,$(machine-y))/
253else
254MACHINE :=
255endif
256ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y)
257MACHINE :=
258endif
259
260machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y))
261platdirs := $(patsubst %,arch/arm/plat-%/,$(sort $(plat-y)))
262
263ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y)
264ifeq ($(KBUILD_SRC),)
265KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(machdirs) $(platdirs))
266else
267KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs))
268endif
269endif
270
271export TEXT_OFFSET GZFLAGS MMUEXT
272
273# Do we have FASTFPE?
274FASTFPE :=arch/arm/fastfpe
275ifeq ($(FASTFPE),$(wildcard $(FASTFPE)))
276FASTFPE_OBJ :=$(FASTFPE)/
277endif
278
279core-$(CONFIG_FPE_NWFPE) += arch/arm/nwfpe/
280core-$(CONFIG_FPE_FASTFPE) += $(FASTFPE_OBJ)
281core-$(CONFIG_VFP) += arch/arm/vfp/
282core-$(CONFIG_XEN) += arch/arm/xen/
283core-$(CONFIG_KVM_ARM_HOST) += arch/arm/kvm/
284core-$(CONFIG_VDSO) += arch/arm/vdso/
285
286# If we have a machine-specific directory, then include it in the build.
287core-y += arch/arm/kernel/ arch/arm/mm/ arch/arm/common/
288core-y += arch/arm/probes/
289core-y += arch/arm/net/
290core-y += arch/arm/crypto/
291core-y += arch/arm/firmware/
292core-y += $(machdirs) $(platdirs)
293
294drivers-$(CONFIG_OPROFILE) += arch/arm/oprofile/
295
296libs-y := arch/arm/lib/ $(libs-y)
297
298# Default target when executing plain make
299ifeq ($(CONFIG_XIP_KERNEL),y)
300KBUILD_IMAGE := xipImage
301else
302KBUILD_IMAGE := zImage
303endif
304
305# Build the DT binary blobs if we have OF configured
306ifeq ($(CONFIG_USE_OF),y)
307KBUILD_DTBS := dtbs
308endif
309
310all: $(KBUILD_IMAGE) $(KBUILD_DTBS)
311
312boot := arch/arm/boot
313
314archprepare:
315 $(Q)$(MAKE) $(build)=arch/arm/tools include/generated/mach-types.h
316
317# Convert bzImage to zImage
318bzImage: zImage
319
320BOOT_TARGETS = zImage Image xipImage bootpImage uImage
321INSTALL_TARGETS = zinstall uinstall install
322
323PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS)
324
325bootpImage uImage: zImage
326zImage: Image
327
328$(BOOT_TARGETS): vmlinux
329 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
330
331$(INSTALL_TARGETS):
332 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
333
334%.dtb: | scripts
335 $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
336
337PHONY += dtbs dtbs_install
338
339dtbs: prepare scripts
340 $(Q)$(MAKE) $(build)=$(boot)/dts
341
342dtbs_install:
343 $(Q)$(MAKE) $(dtbinst)=$(boot)/dts
344
345PHONY += vdso_install
346vdso_install:
347ifeq ($(CONFIG_VDSO),y)
348 $(Q)$(MAKE) $(build)=arch/arm/vdso $@
349endif
350
351# We use MRPROPER_FILES and CLEAN_FILES now
352archclean:
353 $(Q)$(MAKE) $(clean)=$(boot)
354
355# My testing targets (bypasses dependencies)
356bp:; $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage
357
358
359define archhelp
360 echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
361 echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
362 echo '* xipImage - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)'
363 echo ' uImage - U-Boot wrapped zImage'
364 echo ' bootpImage - Combined zImage and initial RAM disk'
365 echo ' (supply initrd image via make variable INITRD=<path>)'
366 echo '* dtbs - Build device tree blobs for enabled boards'
367 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'
368 echo ' install - Install uncompressed kernel'
369 echo ' zinstall - Install compressed kernel'
370 echo ' uinstall - Install U-Boot wrapped compressed kernel'
371 echo ' Install using (your) ~/bin/$(INSTALLKERNEL) or'
372 echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
373 echo ' install to $$(INSTALL_PATH) and run lilo'
374 echo ' vdso_install - Install unstripped vdso.so to $$(INSTALL_MOD_PATH)/vdso'
375endef