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
26OBJCOPYFLAGS :=-O binary -R .comment -S
27GZFLAGS :=-9
28#KBUILD_CFLAGS +=-pipe
29
30# Never generate .eh_frame
31KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm)
32
33# Do not use arch/arm/defconfig - it's always outdated.
34# Select a platform tht is kept up-to-date
35KBUILD_DEFCONFIG := versatile_defconfig
36
37# defines filename extension depending memory management type.
38ifeq ($(CONFIG_MMU),)
39MMUEXT := -nommu
40KBUILD_CFLAGS += $(call cc-option,-mno-unaligned-access)
41endif
42
43ifeq ($(CONFIG_FRAME_POINTER),y)
44KBUILD_CFLAGS +=-fno-omit-frame-pointer -mapcs -mno-sched-prolog
45endif
46
47ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
48KBUILD_CPPFLAGS += -mbig-endian
49AS += -EB
50LD += -EB
51else
52KBUILD_CPPFLAGS += -mlittle-endian
53AS += -EL
54LD += -EL
55endif
56
57#
58# The Scalar Replacement of Aggregates (SRA) optimization pass in GCC 4.9 and
59# later may result in code being generated that handles signed short and signed
60# char struct members incorrectly. So disable it.
61# (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65932)
62#
63KBUILD_CFLAGS += $(call cc-option,-fno-ipa-sra)
64
65# This selects which instruction set is used.
66# Note that GCC does not numerically define an architecture version
67# macro, but instead defines a whole series of macros which makes
68# testing for a specific architecture or later rather impossible.
69arch-$(CONFIG_CPU_32v7M) =-D__LINUX_ARM_ARCH__=7 -march=armv7-m -Wa,-march=armv7-m
70arch-$(CONFIG_CPU_32v7) =-D__LINUX_ARM_ARCH__=7 $(call cc-option,-march=armv7-a,-march=armv5t -Wa$(comma)-march=armv7-a)
71arch-$(CONFIG_CPU_32v6) =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6,-march=armv5t -Wa$(comma)-march=armv6)
72# Only override the compiler option if ARMv6. The ARMv6K extensions are
73# always available in ARMv7
74ifeq ($(CONFIG_CPU_32v6),y)
75arch-$(CONFIG_CPU_32v6K) =-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6k,-march=armv5t -Wa$(comma)-march=armv6k)
76endif
77arch-$(CONFIG_CPU_32v5) =-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t)
78arch-$(CONFIG_CPU_32v4T) =-D__LINUX_ARM_ARCH__=4 -march=armv4t
79arch-$(CONFIG_CPU_32v4) =-D__LINUX_ARM_ARCH__=4 -march=armv4
80arch-$(CONFIG_CPU_32v3) =-D__LINUX_ARM_ARCH__=3 -march=armv3
81
82# Evaluate arch cc-option calls now
83arch-y := $(arch-y)
84
85# This selects how we optimise for the processor.
86tune-$(CONFIG_CPU_ARM7TDMI) =-mtune=arm7tdmi
87tune-$(CONFIG_CPU_ARM720T) =-mtune=arm7tdmi
88tune-$(CONFIG_CPU_ARM740T) =-mtune=arm7tdmi
89tune-$(CONFIG_CPU_ARM9TDMI) =-mtune=arm9tdmi
90tune-$(CONFIG_CPU_ARM940T) =-mtune=arm9tdmi
91tune-$(CONFIG_CPU_ARM946E) =$(call cc-option,-mtune=arm9e,-mtune=arm9tdmi)
92tune-$(CONFIG_CPU_ARM920T) =-mtune=arm9tdmi
93tune-$(CONFIG_CPU_ARM922T) =-mtune=arm9tdmi
94tune-$(CONFIG_CPU_ARM925T) =-mtune=arm9tdmi
95tune-$(CONFIG_CPU_ARM926T) =-mtune=arm9tdmi
96tune-$(CONFIG_CPU_FA526) =-mtune=arm9tdmi
97tune-$(CONFIG_CPU_SA110) =-mtune=strongarm110
98tune-$(CONFIG_CPU_SA1100) =-mtune=strongarm1100
99tune-$(CONFIG_CPU_XSCALE) =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
100tune-$(CONFIG_CPU_XSC3) =$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
101tune-$(CONFIG_CPU_FEROCEON) =$(call cc-option,-mtune=marvell-f,-mtune=xscale)
102tune-$(CONFIG_CPU_V6) =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
103tune-$(CONFIG_CPU_V6K) =$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
104
105# Evaluate tune cc-option calls now
106tune-y := $(tune-y)
107
108ifeq ($(CONFIG_AEABI),y)
109CFLAGS_ABI :=-mabi=aapcs-linux -mno-thumb-interwork -mfpu=vfp
110else
111CFLAGS_ABI :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,)
112endif
113
114ifeq ($(CONFIG_ARM_UNWIND),y)
115CFLAGS_ABI +=-funwind-tables
116endif
117
118ifeq ($(CONFIG_THUMB2_KERNEL),y)
119AFLAGS_AUTOIT :=$(call as-option,-Wa$(comma)-mimplicit-it=always,-Wa$(comma)-mauto-it)
120AFLAGS_NOWARN :=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
121CFLAGS_ISA :=-mthumb $(AFLAGS_AUTOIT) $(AFLAGS_NOWARN)
122AFLAGS_ISA :=$(CFLAGS_ISA) -Wa$(comma)-mthumb
123# Work around buggy relocation from gas if requested:
124ifeq ($(CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11),y)
125CFLAGS_MODULE +=-fno-optimize-sibling-calls
126endif
127else
128CFLAGS_ISA :=$(call cc-option,-marm,)
129AFLAGS_ISA :=$(CFLAGS_ISA)
130endif
131
132# Need -Uarm for gcc < 3.x
133KBUILD_CFLAGS +=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
134KBUILD_AFLAGS +=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float
135
136CHECKFLAGS += -D__arm__
137
138#Default value
139head-y := arch/arm/kernel/head$(MMUEXT).o
140
141# Text offset. This list is sorted numerically by address in order to
142# provide a means to avoid/resolve conflicts in multi-arch kernels.
143textofs-y := 0x00008000
144textofs-$(CONFIG_ARCH_CLPS711X) := 0x00028000
145# We don't want the htc bootloader to corrupt kernel during resume
146textofs-$(CONFIG_PM_H1940) := 0x00108000
147# SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
148ifeq ($(CONFIG_ARCH_SA1100),y)
149textofs-$(CONFIG_SA1111) := 0x00208000
150endif
151textofs-$(CONFIG_ARCH_MSM8X60) := 0x00208000
152textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000
153textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000
154
155# Machine directory name. This list is sorted alphanumerically
156# by CONFIG_* macro name.
157machine-$(CONFIG_ARCH_ALPINE) += alpine
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-$(CONFIG_ARCH_MOXART) += moxart
187machine-$(CONFIG_ARCH_MV78XX0) += mv78xx0
188machine-$(CONFIG_ARCH_MVEBU) += mvebu
189machine-$(CONFIG_ARCH_MXC) += imx
190machine-$(CONFIG_ARCH_MEDIATEK) += mediatek
191machine-$(CONFIG_ARCH_MXS) += mxs
192machine-$(CONFIG_ARCH_NETX) += netx
193machine-$(CONFIG_ARCH_NOMADIK) += nomadik
194machine-$(CONFIG_ARCH_NSPIRE) += nspire
195machine-$(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-$(CONFIG_ARCH_TEGRA) += tegra
215machine-$(CONFIG_ARCH_U300) += u300
216machine-$(CONFIG_ARCH_U8500) += ux500
217machine-$(CONFIG_ARCH_UNIPHIER) += uniphier
218machine-$(CONFIG_ARCH_VERSATILE) += versatile
219machine-$(CONFIG_ARCH_VEXPRESS) += vexpress
220machine-$(CONFIG_ARCH_VT8500) += vt8500
221machine-$(CONFIG_ARCH_W90X900) += w90x900
222machine-$(CONFIG_ARCH_ZX) += zx
223machine-$(CONFIG_ARCH_ZYNQ) += zynq
224machine-$(CONFIG_PLAT_SPEAR) += spear
225
226# Platform directory name. This list is sorted alphanumerically
227# by CONFIG_* macro name.
228plat-$(CONFIG_ARCH_EXYNOS) += samsung
229plat-$(CONFIG_ARCH_OMAP) += omap
230plat-$(CONFIG_ARCH_S3C64XX) += samsung
231plat-$(CONFIG_ARCH_S5PV210) += samsung
232plat-$(CONFIG_PLAT_IOP) += iop
233plat-$(CONFIG_PLAT_ORION) += orion
234plat-$(CONFIG_PLAT_PXA) += pxa
235plat-$(CONFIG_PLAT_S3C24XX) += samsung
236plat-$(CONFIG_PLAT_VERSATILE) += versatile
237
238ifeq ($(CONFIG_ARCH_EBSA110),y)
239# This is what happens if you forget the IOCS16 line.
240# PCMCIA cards stop working.
241CFLAGS_3c589_cs.o :=-DISA_SIXTEEN_BIT_PERIPHERAL
242export CFLAGS_3c589_cs.o
243endif
244
245# The byte offset of the kernel image in RAM from the start of RAM.
246TEXT_OFFSET := $(textofs-y)
247
248# The first directory contains additional information for the boot setup code
249ifneq ($(machine-y),)
250MACHINE := arch/arm/mach-$(word 1,$(machine-y))/
251else
252MACHINE :=
253endif
254ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y)
255MACHINE :=
256endif
257
258machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y))
259platdirs := $(patsubst %,arch/arm/plat-%/,$(sort $(plat-y)))
260
261ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y)
262ifeq ($(KBUILD_SRC),)
263KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(machdirs) $(platdirs))
264else
265KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs))
266endif
267endif
268
269export TEXT_OFFSET GZFLAGS MMUEXT
270
271# Do we have FASTFPE?
272FASTFPE :=arch/arm/fastfpe
273ifeq ($(FASTFPE),$(wildcard $(FASTFPE)))
274FASTFPE_OBJ :=$(FASTFPE)/
275endif
276
277core-$(CONFIG_FPE_NWFPE) += arch/arm/nwfpe/
278core-$(CONFIG_FPE_FASTFPE) += $(FASTFPE_OBJ)
279core-$(CONFIG_VFP) += arch/arm/vfp/
280core-$(CONFIG_XEN) += arch/arm/xen/
281core-$(CONFIG_KVM_ARM_HOST) += arch/arm/kvm/
282core-$(CONFIG_VDSO) += arch/arm/vdso/
283
284# If we have a machine-specific directory, then include it in the build.
285core-y += arch/arm/kernel/ arch/arm/mm/ arch/arm/common/
286core-y += arch/arm/probes/
287core-y += arch/arm/net/
288core-y += arch/arm/crypto/
289core-y += arch/arm/firmware/
290core-y += $(machdirs) $(platdirs)
291
292drivers-$(CONFIG_OPROFILE) += arch/arm/oprofile/
293
294libs-y := arch/arm/lib/ $(libs-y)
295
296# Default target when executing plain make
297ifeq ($(CONFIG_XIP_KERNEL),y)
298KBUILD_IMAGE := xipImage
299else
300KBUILD_IMAGE := zImage
301endif
302
303# Build the DT binary blobs if we have OF configured
304ifeq ($(CONFIG_USE_OF),y)
305KBUILD_DTBS := dtbs
306endif
307
308all: $(KBUILD_IMAGE) $(KBUILD_DTBS)
309
310boot := arch/arm/boot
311
312archprepare:
313 $(Q)$(MAKE) $(build)=arch/arm/tools include/generated/mach-types.h
314
315# Convert bzImage to zImage
316bzImage: zImage
317
318BOOT_TARGETS = zImage Image xipImage bootpImage uImage
319INSTALL_TARGETS = zinstall uinstall install
320
321PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS)
322
323bootpImage uImage: zImage
324zImage: Image
325
326$(BOOT_TARGETS): vmlinux
327 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
328
329$(INSTALL_TARGETS):
330 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
331
332%.dtb: | scripts
333 $(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
334
335PHONY += dtbs dtbs_install
336
337dtbs: prepare scripts
338 $(Q)$(MAKE) $(build)=$(boot)/dts
339
340dtbs_install:
341 $(Q)$(MAKE) $(dtbinst)=$(boot)/dts
342
343PHONY += vdso_install
344vdso_install:
345ifeq ($(CONFIG_VDSO),y)
346 $(Q)$(MAKE) $(build)=arch/arm/vdso $@
347endif
348
349# We use MRPROPER_FILES and CLEAN_FILES now
350archclean:
351 $(Q)$(MAKE) $(clean)=$(boot)
352
353# My testing targets (bypasses dependencies)
354bp:; $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage
355i zi:; $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
356
357
358define archhelp
359 echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
360 echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
361 echo '* xipImage - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)'
362 echo ' uImage - U-Boot wrapped zImage'
363 echo ' bootpImage - Combined zImage and initial RAM disk'
364 echo ' (supply initrd image via make variable INITRD=<path>)'
365 echo '* dtbs - Build device tree blobs for enabled boards'
366 echo ' dtbs_install - Install dtbs to $(INSTALL_DTBS_PATH)'
367 echo ' install - Install uncompressed kernel'
368 echo ' zinstall - Install compressed kernel'
369 echo ' uinstall - Install U-Boot wrapped compressed kernel'
370 echo ' Install using (your) ~/bin/$(INSTALLKERNEL) or'
371 echo ' (distribution) /sbin/$(INSTALLKERNEL) or'
372 echo ' install to $$(INSTALL_PATH) and run lilo'
373 echo ' vdso_install - Install unstripped vdso.so to $$(INSTALL_MOD_PATH)/vdso'
374endef