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
13LDFLAGS_vmlinux :=-p --no-undefined -X
14CPPFLAGS_vmlinux.lds = -DTEXT_OFFSET=$(TEXT_OFFSET)
15OBJCOPYFLAGS :=-O binary -R .note -R .comment -S
16GZFLAGS :=-9
17#CFLAGS +=-pipe
18# Explicitly specifiy 32-bit ARM ISA since toolchain default can be -mthumb:
19CFLAGS +=$(call cc-option,-marm,)
20
21# Do not use arch/arm/defconfig - it's always outdated.
22# Select a platform tht is kept up-to-date
23KBUILD_DEFCONFIG := versatile_defconfig
24
25# defines filename extension depending memory manement type.
26ifeq ($(CONFIG_MMU),)
27MMUEXT := -nommu
28endif
29
30ifeq ($(CONFIG_FRAME_POINTER),y)
31CFLAGS +=-fno-omit-frame-pointer -mapcs -mno-sched-prolog
32endif
33
34ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
35CPPFLAGS += -mbig-endian
36AS += -EB
37LD += -EB
38else
39CPPFLAGS += -mlittle-endian
40AS += -EL
41LD += -EL
42endif
43
44comma = ,
45
46# This selects which instruction set is used.
47# Note that GCC does not numerically define an architecture version
48# macro, but instead defines a whole series of macros which makes
49# testing for a specific architecture or later rather impossible.
50arch-$(CONFIG_CPU_32v6) :=-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6,-march=armv5t -Wa$(comma)-march=armv6)
51arch-$(CONFIG_CPU_32v6K) :=-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6k,-march=armv5t -Wa$(comma)-march=armv6k)
52arch-$(CONFIG_CPU_32v5) :=-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t)
53arch-$(CONFIG_CPU_32v4T) :=-D__LINUX_ARM_ARCH__=4 -march=armv4t
54arch-$(CONFIG_CPU_32v4) :=-D__LINUX_ARM_ARCH__=4 -march=armv4
55arch-$(CONFIG_CPU_32v3) :=-D__LINUX_ARM_ARCH__=3 -march=armv3
56
57# This selects how we optimise for the processor.
58tune-$(CONFIG_CPU_ARM610) :=-mtune=arm610
59tune-$(CONFIG_CPU_ARM710) :=-mtune=arm710
60tune-$(CONFIG_CPU_ARM7TDMI) :=-mtune=arm7tdmi
61tune-$(CONFIG_CPU_ARM720T) :=-mtune=arm7tdmi
62tune-$(CONFIG_CPU_ARM740T) :=-mtune=arm7tdmi
63tune-$(CONFIG_CPU_ARM9TDMI) :=-mtune=arm9tdmi
64tune-$(CONFIG_CPU_ARM940T) :=-mtune=arm9tdmi
65tune-$(CONFIG_CPU_ARM946T) :=$(call cc-option,-mtune=arm9e,-mtune=arm9tdmi)
66tune-$(CONFIG_CPU_ARM920T) :=-mtune=arm9tdmi
67tune-$(CONFIG_CPU_ARM922T) :=-mtune=arm9tdmi
68tune-$(CONFIG_CPU_ARM925T) :=-mtune=arm9tdmi
69tune-$(CONFIG_CPU_ARM926T) :=-mtune=arm9tdmi
70tune-$(CONFIG_CPU_SA110) :=-mtune=strongarm110
71tune-$(CONFIG_CPU_SA1100) :=-mtune=strongarm1100
72tune-$(CONFIG_CPU_XSCALE) :=$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
73tune-$(CONFIG_CPU_XSC3) :=$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
74tune-$(CONFIG_CPU_V6) :=$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
75
76ifeq ($(CONFIG_AEABI),y)
77CFLAGS_ABI :=-mabi=aapcs-linux -mno-thumb-interwork
78else
79CFLAGS_ABI :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,)
80endif
81
82# Need -Uarm for gcc < 3.x
83CFLAGS +=$(CFLAGS_ABI) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
84AFLAGS +=$(CFLAGS_ABI) $(arch-y) $(tune-y) -msoft-float
85
86CHECKFLAGS += -D__arm__
87
88#Default value
89head-y := arch/arm/kernel/head$(MMUEXT).o arch/arm/kernel/init_task.o
90textofs-y := 0x00008000
91
92 machine-$(CONFIG_ARCH_RPC) := rpc
93 machine-$(CONFIG_ARCH_EBSA110) := ebsa110
94 machine-$(CONFIG_ARCH_CLPS7500) := clps7500
95 incdir-$(CONFIG_ARCH_CLPS7500) := cl7500
96 machine-$(CONFIG_FOOTBRIDGE) := footbridge
97 incdir-$(CONFIG_FOOTBRIDGE) := ebsa285
98 machine-$(CONFIG_ARCH_CO285) := footbridge
99 incdir-$(CONFIG_ARCH_CO285) := ebsa285
100 machine-$(CONFIG_ARCH_SHARK) := shark
101 machine-$(CONFIG_ARCH_SA1100) := sa1100
102ifeq ($(CONFIG_ARCH_SA1100),y)
103# SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
104 textofs-$(CONFIG_SA1111) := 0x00208000
105endif
106 machine-$(CONFIG_ARCH_PXA) := pxa
107 machine-$(CONFIG_ARCH_L7200) := l7200
108 machine-$(CONFIG_ARCH_INTEGRATOR) := integrator
109 textofs-$(CONFIG_ARCH_CLPS711X) := 0x00028000
110 machine-$(CONFIG_ARCH_CLPS711X) := clps711x
111 machine-$(CONFIG_ARCH_IOP32X) := iop32x
112 machine-$(CONFIG_ARCH_IOP33X) := iop33x
113 machine-$(CONFIG_ARCH_IOP13XX) := iop13xx
114 machine-$(CONFIG_ARCH_IXP4XX) := ixp4xx
115 machine-$(CONFIG_ARCH_IXP2000) := ixp2000
116 machine-$(CONFIG_ARCH_IXP23XX) := ixp23xx
117 machine-$(CONFIG_ARCH_OMAP1) := omap1
118 machine-$(CONFIG_ARCH_OMAP2) := omap2
119 incdir-$(CONFIG_ARCH_OMAP) := omap
120 machine-$(CONFIG_ARCH_S3C2410) := s3c2410
121 machine-$(CONFIG_ARCH_LH7A40X) := lh7a40x
122 machine-$(CONFIG_ARCH_VERSATILE) := versatile
123 machine-$(CONFIG_ARCH_IMX) := imx
124 machine-$(CONFIG_ARCH_H720X) := h720x
125 machine-$(CONFIG_ARCH_AAEC2000) := aaec2000
126 machine-$(CONFIG_ARCH_REALVIEW) := realview
127 machine-$(CONFIG_ARCH_AT91) := at91
128 machine-$(CONFIG_ARCH_EP93XX) := ep93xx
129 machine-$(CONFIG_ARCH_PNX4008) := pnx4008
130 machine-$(CONFIG_ARCH_NETX) := netx
131 machine-$(CONFIG_ARCH_NS9XXX) := ns9xxx
132 textofs-$(CONFIG_ARCH_NS9XXX) := 0x00108000
133
134ifeq ($(CONFIG_ARCH_EBSA110),y)
135# This is what happens if you forget the IOCS16 line.
136# PCMCIA cards stop working.
137CFLAGS_3c589_cs.o :=-DISA_SIXTEEN_BIT_PERIPHERAL
138export CFLAGS_3c589_cs.o
139endif
140
141# The byte offset of the kernel image in RAM from the start of RAM.
142TEXT_OFFSET := $(textofs-y)
143
144ifeq ($(incdir-y),)
145incdir-y := $(machine-y)
146endif
147INCDIR := arch-$(incdir-y)
148
149ifneq ($(machine-y),)
150MACHINE := arch/arm/mach-$(machine-y)/
151else
152MACHINE :=
153endif
154
155export TEXT_OFFSET GZFLAGS MMUEXT
156
157# Do we have FASTFPE?
158FASTFPE :=arch/arm/fastfpe
159ifeq ($(FASTFPE),$(wildcard $(FASTFPE)))
160FASTFPE_OBJ :=$(FASTFPE)/
161endif
162
163# If we have a machine-specific directory, then include it in the build.
164core-y += arch/arm/kernel/ arch/arm/mm/ arch/arm/common/
165core-y += $(MACHINE)
166core-$(CONFIG_ARCH_S3C2410) += arch/arm/mach-s3c2400/
167core-$(CONFIG_ARCH_S3C2410) += arch/arm/mach-s3c2412/
168core-$(CONFIG_ARCH_S3C2410) += arch/arm/mach-s3c2440/
169core-$(CONFIG_ARCH_S3C2410) += arch/arm/mach-s3c2442/
170core-$(CONFIG_ARCH_S3C2410) += arch/arm/mach-s3c2443/
171core-$(CONFIG_FPE_NWFPE) += arch/arm/nwfpe/
172core-$(CONFIG_FPE_FASTFPE) += $(FASTFPE_OBJ)
173core-$(CONFIG_VFP) += arch/arm/vfp/
174
175# If we have a common platform directory, then include it in the build.
176core-$(CONFIG_PLAT_IOP) += arch/arm/plat-iop/
177core-$(CONFIG_ARCH_OMAP) += arch/arm/plat-omap/
178core-$(CONFIG_PLAT_S3C24XX) += arch/arm/plat-s3c24xx/
179
180drivers-$(CONFIG_OPROFILE) += arch/arm/oprofile/
181drivers-$(CONFIG_ARCH_CLPS7500) += drivers/acorn/char/
182drivers-$(CONFIG_ARCH_L7200) += drivers/acorn/char/
183
184libs-y := arch/arm/lib/ $(libs-y)
185
186# Default target when executing plain make
187ifeq ($(CONFIG_XIP_KERNEL),y)
188KBUILD_IMAGE := xipImage
189else
190KBUILD_IMAGE := zImage
191endif
192
193all: $(KBUILD_IMAGE)
194
195boot := arch/arm/boot
196
197# Update machine arch and proc symlinks if something which affects
198# them changed. We use .arch to indicate when they were updated
199# last, otherwise make uses the target directory mtime.
200
201include/asm-arm/.arch: $(wildcard include/config/arch/*.h) include/config/auto.conf
202 @echo ' SYMLINK include/asm-arm/arch -> include/asm-arm/$(INCDIR)'
203ifneq ($(KBUILD_SRC),)
204 $(Q)mkdir -p include/asm-arm
205 $(Q)ln -fsn $(srctree)/include/asm-arm/$(INCDIR) include/asm-arm/arch
206else
207 $(Q)ln -fsn $(INCDIR) include/asm-arm/arch
208endif
209 @touch $@
210
211archprepare: maketools
212
213PHONY += maketools FORCE
214maketools: include/linux/version.h include/asm-arm/.arch FORCE
215 $(Q)$(MAKE) $(build)=arch/arm/tools include/asm-arm/mach-types.h
216
217# Convert bzImage to zImage
218bzImage: zImage
219
220zImage Image xipImage bootpImage uImage: vmlinux
221 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
222
223zinstall install: vmlinux
224 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
225
226CLEAN_FILES += include/asm-arm/mach-types.h \
227 include/asm-arm/arch include/asm-arm/.arch
228
229# We use MRPROPER_FILES and CLEAN_FILES now
230archclean:
231 $(Q)$(MAKE) $(clean)=$(boot)
232
233# My testing targets (bypasses dependencies)
234bp:; $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage
235i zi:; $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
236
237
238define archhelp
239 echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
240 echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
241 echo '* xipImage - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)'
242 echo ' bootpImage - Combined zImage and initial RAM disk'
243 echo ' (supply initrd image via make variable INITRD=<path>)'
244 echo ' install - Install uncompressed kernel'
245 echo ' zinstall - Install compressed kernel'
246 echo ' Install using (your) ~/bin/installkernel or'
247 echo ' (distribution) /sbin/installkernel or'
248 echo ' install to $$(INSTALL_PATH) and run lilo'
249endef