kbuild: enable use of AFLAGS and CFLAGS on commandline
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / arm / Makefile
CommitLineData
1da177e4
LT
1#
2# arch/arm/Makefile
3#
4f193362
PS
4# This file is included by the global makefile so that you can add your own
5# architecture-specific flags and dependencies.
6#
1da177e4
LT
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
9d4f13e5 14CPPFLAGS_vmlinux.lds = -DTEXT_OFFSET=$(TEXT_OFFSET)
1da177e4
LT
15OBJCOPYFLAGS :=-O binary -R .note -R .comment -S
16GZFLAGS :=-9
a0f97e06 17#KBUILD_CFLAGS +=-pipe
5636810d 18# Explicitly specifiy 32-bit ARM ISA since toolchain default can be -mthumb:
a0f97e06 19KBUILD_CFLAGS +=$(call cc-option,-marm,)
1da177e4
LT
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21# Do not use arch/arm/defconfig - it's always outdated.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
f8c07de6
HC
25# defines filename extension depending memory manement type.
26ifeq ($(CONFIG_MMU),)
27MMUEXT := -nommu
28endif
29
1da177e4 30ifeq ($(CONFIG_FRAME_POINTER),y)
a0f97e06 31KBUILD_CFLAGS +=-fno-omit-frame-pointer -mapcs -mno-sched-prolog
1da177e4
LT
32endif
33
34ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
35CPPFLAGS += -mbig-endian
36AS += -EB
37LD += -EB
38else
39CPPFLAGS += -mlittle-endian
40AS += -EL
41LD += -EL
42endif
43
44comma = ,
45
46# This selects which instruction set is used.
47# Note that GCC does not numerically define an architecture version
48# macro, but instead defines a whole series of macros which makes
49# testing for a specific architecture or later rather impossible.
23688e99 50arch-$(CONFIG_CPU_32v7) :=-D__LINUX_ARM_ARCH__=7 $(call cc-option,-march=armv7a,-march=armv5t -Wa$(comma)-march=armv7a)
1da177e4 51arch-$(CONFIG_CPU_32v6) :=-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6,-march=armv5t -Wa$(comma)-march=armv6)
23688e99
CM
52# Only override the compiler option if ARMv6. The ARMv6K extensions are
53# always available in ARMv7
54ifeq ($(CONFIG_CPU_32v6),y)
4a5f79e7 55arch-$(CONFIG_CPU_32v6K) :=-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6k,-march=armv5t -Wa$(comma)-march=armv6k)
23688e99 56endif
260e98ed
LB
57arch-$(CONFIG_CPU_32v5) :=-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t)
58arch-$(CONFIG_CPU_32v4T) :=-D__LINUX_ARM_ARCH__=4 -march=armv4t
1da177e4
LT
59arch-$(CONFIG_CPU_32v4) :=-D__LINUX_ARM_ARCH__=4 -march=armv4
60arch-$(CONFIG_CPU_32v3) :=-D__LINUX_ARM_ARCH__=3 -march=armv3
61
62# This selects how we optimise for the processor.
63tune-$(CONFIG_CPU_ARM610) :=-mtune=arm610
64tune-$(CONFIG_CPU_ARM710) :=-mtune=arm710
07e0da78 65tune-$(CONFIG_CPU_ARM7TDMI) :=-mtune=arm7tdmi
1da177e4 66tune-$(CONFIG_CPU_ARM720T) :=-mtune=arm7tdmi
b731c311 67tune-$(CONFIG_CPU_ARM740T) :=-mtune=arm7tdmi
43f5f014 68tune-$(CONFIG_CPU_ARM9TDMI) :=-mtune=arm9tdmi
d60674eb 69tune-$(CONFIG_CPU_ARM940T) :=-mtune=arm9tdmi
f37f46eb 70tune-$(CONFIG_CPU_ARM946T) :=$(call cc-option,-mtune=arm9e,-mtune=arm9tdmi)
1da177e4
LT
71tune-$(CONFIG_CPU_ARM920T) :=-mtune=arm9tdmi
72tune-$(CONFIG_CPU_ARM922T) :=-mtune=arm9tdmi
73tune-$(CONFIG_CPU_ARM925T) :=-mtune=arm9tdmi
74tune-$(CONFIG_CPU_ARM926T) :=-mtune=arm9tdmi
75tune-$(CONFIG_CPU_SA110) :=-mtune=strongarm110
76tune-$(CONFIG_CPU_SA1100) :=-mtune=strongarm1100
77tune-$(CONFIG_CPU_XSCALE) :=$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
23bdf86a 78tune-$(CONFIG_CPU_XSC3) :=$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
cd26f45b 79tune-$(CONFIG_CPU_V6) :=$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
1da177e4 80
704bdda0 81ifeq ($(CONFIG_AEABI),y)
c7fd8442 82CFLAGS_ABI :=-mabi=aapcs-linux -mno-thumb-interwork
704bdda0 83else
c28a814f 84CFLAGS_ABI :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,)
704bdda0
NP
85endif
86
87# Need -Uarm for gcc < 3.x
a0f97e06 88KBUILD_CFLAGS +=$(CFLAGS_ABI) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
222d394d 89KBUILD_AFLAGS +=$(CFLAGS_ABI) $(arch-y) $(tune-y) -msoft-float
1da177e4
LT
90
91CHECKFLAGS += -D__arm__
92
93#Default value
75d90832 94head-y := arch/arm/kernel/head$(MMUEXT).o arch/arm/kernel/init_task.o
9d4f13e5 95textofs-y := 0x00008000
1da177e4
LT
96
97 machine-$(CONFIG_ARCH_RPC) := rpc
98 machine-$(CONFIG_ARCH_EBSA110) := ebsa110
99 machine-$(CONFIG_ARCH_CLPS7500) := clps7500
100 incdir-$(CONFIG_ARCH_CLPS7500) := cl7500
101 machine-$(CONFIG_FOOTBRIDGE) := footbridge
102 incdir-$(CONFIG_FOOTBRIDGE) := ebsa285
1da177e4
LT
103 machine-$(CONFIG_ARCH_CO285) := footbridge
104 incdir-$(CONFIG_ARCH_CO285) := ebsa285
105 machine-$(CONFIG_ARCH_SHARK) := shark
106 machine-$(CONFIG_ARCH_SA1100) := sa1100
107ifeq ($(CONFIG_ARCH_SA1100),y)
108# SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
9d4f13e5 109 textofs-$(CONFIG_SA1111) := 0x00208000
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LT
110endif
111 machine-$(CONFIG_ARCH_PXA) := pxa
112 machine-$(CONFIG_ARCH_L7200) := l7200
113 machine-$(CONFIG_ARCH_INTEGRATOR) := integrator
9d4f13e5 114 textofs-$(CONFIG_ARCH_CLPS711X) := 0x00028000
1da177e4 115 machine-$(CONFIG_ARCH_CLPS711X) := clps711x
3f7e5815
LB
116 machine-$(CONFIG_ARCH_IOP32X) := iop32x
117 machine-$(CONFIG_ARCH_IOP33X) := iop33x
285f5fa7 118 machine-$(CONFIG_ARCH_IOP13XX) := iop13xx
1da177e4
LT
119 machine-$(CONFIG_ARCH_IXP4XX) := ixp4xx
120 machine-$(CONFIG_ARCH_IXP2000) := ixp2000
c4713074 121 machine-$(CONFIG_ARCH_IXP23XX) := ixp23xx
d48af15e 122 machine-$(CONFIG_ARCH_OMAP1) := omap1
1dbae815 123 machine-$(CONFIG_ARCH_OMAP2) := omap2
d48af15e 124 incdir-$(CONFIG_ARCH_OMAP) := omap
1da177e4
LT
125 machine-$(CONFIG_ARCH_S3C2410) := s3c2410
126 machine-$(CONFIG_ARCH_LH7A40X) := lh7a40x
127 machine-$(CONFIG_ARCH_VERSATILE) := versatile
128 machine-$(CONFIG_ARCH_IMX) := imx
129 machine-$(CONFIG_ARCH_H720X) := h720x
038c5b60 130 machine-$(CONFIG_ARCH_AAEC2000) := aaec2000
8ad68bbf 131 machine-$(CONFIG_ARCH_REALVIEW) := realview
4afffe5e 132 machine-$(CONFIG_ARCH_AT91) := at91
9918cda5
UKK
133 machine-$(CONFIG_ARCH_EP93XX) := ep93xx
134 machine-$(CONFIG_ARCH_PNX4008) := pnx4008
135 machine-$(CONFIG_ARCH_NETX) := netx
136 machine-$(CONFIG_ARCH_NS9XXX) := ns9xxx
137 textofs-$(CONFIG_ARCH_NS9XXX) := 0x00108000
7c6337e2 138 machine-$(CONFIG_ARCH_DAVINCI) := davinci
c53c9cf6 139 machine-$(CONFIG_ARCH_KS8695) := ks8695
52c543f9
QJ
140 incdir-$(CONFIG_ARCH_MXC) := mxc
141 machine-$(CONFIG_ARCH_MX3) := mx3
1da177e4
LT
142
143ifeq ($(CONFIG_ARCH_EBSA110),y)
144# This is what happens if you forget the IOCS16 line.
145# PCMCIA cards stop working.
146CFLAGS_3c589_cs.o :=-DISA_SIXTEEN_BIT_PERIPHERAL
147export CFLAGS_3c589_cs.o
148endif
149
9d4f13e5
RK
150# The byte offset of the kernel image in RAM from the start of RAM.
151TEXT_OFFSET := $(textofs-y)
1da177e4
LT
152
153ifeq ($(incdir-y),)
154incdir-y := $(machine-y)
155endif
156INCDIR := arch-$(incdir-y)
37d07b72 157
1da177e4
LT
158ifneq ($(machine-y),)
159MACHINE := arch/arm/mach-$(machine-y)/
160else
161MACHINE :=
162endif
a21765a7 163
f8c07de6 164export TEXT_OFFSET GZFLAGS MMUEXT
1da177e4
LT
165
166# Do we have FASTFPE?
167FASTFPE :=arch/arm/fastfpe
168ifeq ($(FASTFPE),$(wildcard $(FASTFPE)))
169FASTFPE_OBJ :=$(FASTFPE)/
170endif
171
172# If we have a machine-specific directory, then include it in the build.
173core-y += arch/arm/kernel/ arch/arm/mm/ arch/arm/common/
174core-y += $(MACHINE)
a21765a7
BD
175core-$(CONFIG_ARCH_S3C2410) += arch/arm/mach-s3c2400/
176core-$(CONFIG_ARCH_S3C2410) += arch/arm/mach-s3c2412/
177core-$(CONFIG_ARCH_S3C2410) += arch/arm/mach-s3c2440/
178core-$(CONFIG_ARCH_S3C2410) += arch/arm/mach-s3c2442/
e4d06e39 179core-$(CONFIG_ARCH_S3C2410) += arch/arm/mach-s3c2443/
1da177e4
LT
180core-$(CONFIG_FPE_NWFPE) += arch/arm/nwfpe/
181core-$(CONFIG_FPE_FASTFPE) += $(FASTFPE_OBJ)
182core-$(CONFIG_VFP) += arch/arm/vfp/
183
d48af15e 184# If we have a common platform directory, then include it in the build.
7ae1f7ec 185core-$(CONFIG_PLAT_IOP) += arch/arm/plat-iop/
d48af15e 186core-$(CONFIG_ARCH_OMAP) += arch/arm/plat-omap/
a21765a7 187core-$(CONFIG_PLAT_S3C24XX) += arch/arm/plat-s3c24xx/
52c543f9 188core-$(CONFIG_ARCH_MXC) += arch/arm/plat-mxc/
d48af15e 189
1da177e4
LT
190drivers-$(CONFIG_OPROFILE) += arch/arm/oprofile/
191drivers-$(CONFIG_ARCH_CLPS7500) += drivers/acorn/char/
192drivers-$(CONFIG_ARCH_L7200) += drivers/acorn/char/
193
30c2f90b 194libs-y := arch/arm/lib/ $(libs-y)
1da177e4
LT
195
196# Default target when executing plain make
197ifeq ($(CONFIG_XIP_KERNEL),y)
51342d71 198KBUILD_IMAGE := xipImage
1da177e4 199else
51342d71 200KBUILD_IMAGE := zImage
1da177e4
LT
201endif
202
51342d71
RK
203all: $(KBUILD_IMAGE)
204
1da177e4
LT
205boot := arch/arm/boot
206
207# Update machine arch and proc symlinks if something which affects
208# them changed. We use .arch to indicate when they were updated
209# last, otherwise make uses the target directory mtime.
210
2e3646e5 211include/asm-arm/.arch: $(wildcard include/config/arch/*.h) include/config/auto.conf
1da177e4
LT
212 @echo ' SYMLINK include/asm-arm/arch -> include/asm-arm/$(INCDIR)'
213ifneq ($(KBUILD_SRC),)
214 $(Q)mkdir -p include/asm-arm
215 $(Q)ln -fsn $(srctree)/include/asm-arm/$(INCDIR) include/asm-arm/arch
216else
217 $(Q)ln -fsn $(INCDIR) include/asm-arm/arch
218endif
219 @touch $@
220
0b155694 221archprepare: maketools
1da177e4 222
4f193362 223PHONY += maketools FORCE
0b155694 224maketools: include/linux/version.h include/asm-arm/.arch FORCE
1da177e4
LT
225 $(Q)$(MAKE) $(build)=arch/arm/tools include/asm-arm/mach-types.h
226
227# Convert bzImage to zImage
228bzImage: zImage
229
230zImage Image xipImage bootpImage uImage: vmlinux
231 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
232
233zinstall install: vmlinux
234 $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
235
e6ae744d 236CLEAN_FILES += include/asm-arm/mach-types.h \
1da177e4
LT
237 include/asm-arm/arch include/asm-arm/.arch
238
239# We use MRPROPER_FILES and CLEAN_FILES now
240archclean:
241 $(Q)$(MAKE) $(clean)=$(boot)
242
243# My testing targets (bypasses dependencies)
244bp:; $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage
245i zi:; $(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
246
1da177e4
LT
247
248define archhelp
249 echo '* zImage - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
250 echo ' Image - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
251 echo '* xipImage - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)'
252 echo ' bootpImage - Combined zImage and initial RAM disk'
253 echo ' (supply initrd image via make variable INITRD=<path>)'
254 echo ' install - Install uncompressed kernel'
255 echo ' zinstall - Install compressed kernel'
256 echo ' Install using (your) ~/bin/installkernel or'
257 echo ' (distribution) /sbin/installkernel or'
258 echo ' install to $$(INSTALL_PATH) and run lilo'
259endef