xref: /openbmc/linux/arch/arm/Makefile (revision 84953f96)
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
17ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
18LDFLAGS_vmlinux	+= --be8
19LDFLAGS_MODULE	+= --be8
20endif
21
22OBJCOPYFLAGS	:=-O binary -R .comment -S
23GZFLAGS		:=-9
24#KBUILD_CFLAGS	+=-pipe
25
26# Never generate .eh_frame
27KBUILD_CFLAGS	+= $(call cc-option,-fno-dwarf2-cfi-asm)
28
29# Do not use arch/arm/defconfig - it's always outdated.
30# Select a platform tht is kept up-to-date
31KBUILD_DEFCONFIG := versatile_defconfig
32
33# defines filename extension depending memory management type.
34ifeq ($(CONFIG_MMU),)
35MMUEXT		:= -nommu
36KBUILD_CFLAGS	+= $(call cc-option,-mno-unaligned-access)
37endif
38
39ifeq ($(CONFIG_FRAME_POINTER),y)
40KBUILD_CFLAGS	+=-fno-omit-frame-pointer -mapcs -mno-sched-prolog
41endif
42
43ifeq ($(CONFIG_CC_STACKPROTECTOR),y)
44KBUILD_CFLAGS	+=-fstack-protector
45endif
46
47ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
48KBUILD_CPPFLAGS	+= -mbig-endian
49AS		+= -EB
50LD		+= -EB
51else
52KBUILD_CPPFLAGS	+= -mlittle-endian
53AS		+= -EL
54LD		+= -EL
55endif
56
57comma = ,
58
59# This selects which instruction set is used.
60# Note that GCC does not numerically define an architecture version
61# macro, but instead defines a whole series of macros which makes
62# testing for a specific architecture or later rather impossible.
63arch-$(CONFIG_CPU_32v7M)	=-D__LINUX_ARM_ARCH__=7 -march=armv7-m -Wa,-march=armv7-m
64arch-$(CONFIG_CPU_32v7)		=-D__LINUX_ARM_ARCH__=7 $(call cc-option,-march=armv7-a,-march=armv5t -Wa$(comma)-march=armv7-a)
65arch-$(CONFIG_CPU_32v6)		=-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6,-march=armv5t -Wa$(comma)-march=armv6)
66# Only override the compiler option if ARMv6. The ARMv6K extensions are
67# always available in ARMv7
68ifeq ($(CONFIG_CPU_32v6),y)
69arch-$(CONFIG_CPU_32v6K)	=-D__LINUX_ARM_ARCH__=6 $(call cc-option,-march=armv6k,-march=armv5t -Wa$(comma)-march=armv6k)
70endif
71arch-$(CONFIG_CPU_32v5)		=-D__LINUX_ARM_ARCH__=5 $(call cc-option,-march=armv5te,-march=armv4t)
72arch-$(CONFIG_CPU_32v4T)	=-D__LINUX_ARM_ARCH__=4 -march=armv4t
73arch-$(CONFIG_CPU_32v4)		=-D__LINUX_ARM_ARCH__=4 -march=armv4
74arch-$(CONFIG_CPU_32v3)		=-D__LINUX_ARM_ARCH__=3 -march=armv3
75
76# Evaluate arch cc-option calls now
77arch-y := $(arch-y)
78
79# This selects how we optimise for the processor.
80tune-$(CONFIG_CPU_ARM7TDMI)	=-mtune=arm7tdmi
81tune-$(CONFIG_CPU_ARM720T)	=-mtune=arm7tdmi
82tune-$(CONFIG_CPU_ARM740T)	=-mtune=arm7tdmi
83tune-$(CONFIG_CPU_ARM9TDMI)	=-mtune=arm9tdmi
84tune-$(CONFIG_CPU_ARM940T)	=-mtune=arm9tdmi
85tune-$(CONFIG_CPU_ARM946E)	=$(call cc-option,-mtune=arm9e,-mtune=arm9tdmi)
86tune-$(CONFIG_CPU_ARM920T)	=-mtune=arm9tdmi
87tune-$(CONFIG_CPU_ARM922T)	=-mtune=arm9tdmi
88tune-$(CONFIG_CPU_ARM925T)	=-mtune=arm9tdmi
89tune-$(CONFIG_CPU_ARM926T)	=-mtune=arm9tdmi
90tune-$(CONFIG_CPU_FA526)	=-mtune=arm9tdmi
91tune-$(CONFIG_CPU_SA110)	=-mtune=strongarm110
92tune-$(CONFIG_CPU_SA1100)	=-mtune=strongarm1100
93tune-$(CONFIG_CPU_XSCALE)	=$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
94tune-$(CONFIG_CPU_XSC3)		=$(call cc-option,-mtune=xscale,-mtune=strongarm110) -Wa,-mcpu=xscale
95tune-$(CONFIG_CPU_FEROCEON)	=$(call cc-option,-mtune=marvell-f,-mtune=xscale)
96tune-$(CONFIG_CPU_V6)		=$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
97tune-$(CONFIG_CPU_V6K)		=$(call cc-option,-mtune=arm1136j-s,-mtune=strongarm)
98
99# Evaluate tune cc-option calls now
100tune-y := $(tune-y)
101
102ifeq ($(CONFIG_AEABI),y)
103CFLAGS_ABI	:=-mabi=aapcs-linux -mno-thumb-interwork
104else
105CFLAGS_ABI	:=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-thumb-interwork,)
106endif
107
108ifeq ($(CONFIG_ARM_UNWIND),y)
109CFLAGS_ABI	+=-funwind-tables
110endif
111
112ifeq ($(CONFIG_THUMB2_KERNEL),y)
113AFLAGS_AUTOIT	:=$(call as-option,-Wa$(comma)-mimplicit-it=always,-Wa$(comma)-mauto-it)
114AFLAGS_NOWARN	:=$(call as-option,-Wa$(comma)-mno-warn-deprecated,-Wa$(comma)-W)
115CFLAGS_ISA	:=-mthumb $(AFLAGS_AUTOIT) $(AFLAGS_NOWARN)
116AFLAGS_ISA	:=$(CFLAGS_ISA) -Wa$(comma)-mthumb
117# Work around buggy relocation from gas if requested:
118ifeq ($(CONFIG_THUMB2_AVOID_R_ARM_THM_JUMP11),y)
119CFLAGS_MODULE	+=-fno-optimize-sibling-calls
120endif
121else
122CFLAGS_ISA	:=$(call cc-option,-marm,)
123AFLAGS_ISA	:=$(CFLAGS_ISA)
124endif
125
126# Need -Uarm for gcc < 3.x
127KBUILD_CFLAGS	+=$(CFLAGS_ABI) $(CFLAGS_ISA) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm
128KBUILD_AFLAGS	+=$(CFLAGS_ABI) $(AFLAGS_ISA) $(arch-y) $(tune-y) -include asm/unified.h -msoft-float
129
130CHECKFLAGS	+= -D__arm__
131
132#Default value
133head-y		:= arch/arm/kernel/head$(MMUEXT).o
134textofs-y	:= 0x00008000
135textofs-$(CONFIG_ARCH_CLPS711X) := 0x00028000
136# We don't want the htc bootloader to corrupt kernel during resume
137textofs-$(CONFIG_PM_H1940)      := 0x00108000
138# SA1111 DMA bug: we don't want the kernel to live in precious DMA-able memory
139ifeq ($(CONFIG_ARCH_SA1100),y)
140textofs-$(CONFIG_SA1111) := 0x00208000
141endif
142textofs-$(CONFIG_ARCH_MSM7X30) := 0x00208000
143textofs-$(CONFIG_ARCH_MSM8X60) := 0x00208000
144textofs-$(CONFIG_ARCH_MSM8960) := 0x00208000
145
146# Machine directory name.  This list is sorted alphanumerically
147# by CONFIG_* macro name.
148machine-$(CONFIG_ARCH_AT91)		+= at91
149machine-$(CONFIG_ARCH_BCM)		+= bcm
150machine-$(CONFIG_ARCH_BCM2835)		+= bcm2835
151machine-$(CONFIG_ARCH_CLPS711X)		+= clps711x
152machine-$(CONFIG_ARCH_CNS3XXX)		+= cns3xxx
153machine-$(CONFIG_ARCH_DAVINCI)		+= davinci
154machine-$(CONFIG_ARCH_DOVE)		+= dove
155machine-$(CONFIG_ARCH_EBSA110)		+= ebsa110
156machine-$(CONFIG_ARCH_EP93XX)		+= ep93xx
157machine-$(CONFIG_ARCH_EXYNOS)		+= exynos
158machine-$(CONFIG_ARCH_GEMINI)		+= gemini
159machine-$(CONFIG_ARCH_HIGHBANK)		+= highbank
160machine-$(CONFIG_ARCH_INTEGRATOR)	+= integrator
161machine-$(CONFIG_ARCH_IOP13XX)		+= iop13xx
162machine-$(CONFIG_ARCH_IOP32X)		+= iop32x
163machine-$(CONFIG_ARCH_IOP33X)		+= iop33x
164machine-$(CONFIG_ARCH_IXP4XX)		+= ixp4xx
165machine-$(CONFIG_ARCH_KEYSTONE)		+= keystone
166machine-$(CONFIG_ARCH_KIRKWOOD)		+= kirkwood
167machine-$(CONFIG_ARCH_KS8695)		+= ks8695
168machine-$(CONFIG_ARCH_LPC32XX)		+= lpc32xx
169machine-$(CONFIG_ARCH_MMP)		+= mmp
170machine-$(CONFIG_ARCH_MSM)		+= msm
171machine-$(CONFIG_ARCH_MV78XX0)		+= mv78xx0
172machine-$(CONFIG_ARCH_MVEBU)		+= mvebu
173machine-$(CONFIG_ARCH_MXC)		+= imx
174machine-$(CONFIG_ARCH_MXS)		+= mxs
175machine-$(CONFIG_ARCH_NETX)		+= netx
176machine-$(CONFIG_ARCH_NOMADIK)		+= nomadik
177machine-$(CONFIG_ARCH_NSPIRE)		+= nspire
178machine-$(CONFIG_ARCH_OMAP1)		+= omap1
179machine-$(CONFIG_ARCH_OMAP2PLUS)	+= omap2
180machine-$(CONFIG_ARCH_ORION5X)		+= orion5x
181machine-$(CONFIG_ARCH_PICOXCELL)	+= picoxcell
182machine-$(CONFIG_ARCH_PXA)		+= pxa
183machine-$(CONFIG_ARCH_REALVIEW)		+= realview
184machine-$(CONFIG_ARCH_ROCKCHIP)		+= rockchip
185machine-$(CONFIG_ARCH_RPC)		+= rpc
186machine-$(CONFIG_ARCH_S3C24XX)		+= s3c24xx
187machine-$(CONFIG_ARCH_S3C64XX)		+= s3c64xx
188machine-$(CONFIG_ARCH_S5P64X0)		+= s5p64x0
189machine-$(CONFIG_ARCH_S5PC100)		+= s5pc100
190machine-$(CONFIG_ARCH_S5PV210)		+= s5pv210
191machine-$(CONFIG_ARCH_SA1100)		+= sa1100
192machine-$(CONFIG_ARCH_SHMOBILE) 	+= shmobile
193machine-$(CONFIG_ARCH_SHMOBILE_MULTI) 	+= shmobile
194machine-$(CONFIG_ARCH_SIRF)		+= prima2
195machine-$(CONFIG_ARCH_SOCFPGA)		+= socfpga
196machine-$(CONFIG_ARCH_STI)		+= sti
197machine-$(CONFIG_ARCH_SUNXI)		+= sunxi
198machine-$(CONFIG_ARCH_TEGRA)		+= tegra
199machine-$(CONFIG_ARCH_U300)		+= u300
200machine-$(CONFIG_ARCH_U8500)		+= ux500
201machine-$(CONFIG_ARCH_VERSATILE)	+= versatile
202machine-$(CONFIG_ARCH_VEXPRESS)		+= vexpress
203machine-$(CONFIG_ARCH_VIRT)		+= virt
204machine-$(CONFIG_ARCH_VT8500)		+= vt8500
205machine-$(CONFIG_ARCH_W90X900)		+= w90x900
206machine-$(CONFIG_ARCH_ZYNQ)		+= zynq
207machine-$(CONFIG_FOOTBRIDGE)		+= footbridge
208machine-$(CONFIG_PLAT_SPEAR)		+= spear
209
210# Platform directory name.  This list is sorted alphanumerically
211# by CONFIG_* macro name.
212plat-$(CONFIG_ARCH_EXYNOS)	+= samsung
213plat-$(CONFIG_ARCH_OMAP)	+= omap
214plat-$(CONFIG_ARCH_S3C64XX)	+= samsung
215plat-$(CONFIG_PLAT_IOP)		+= iop
216plat-$(CONFIG_PLAT_ORION)	+= orion
217plat-$(CONFIG_PLAT_PXA)		+= pxa
218plat-$(CONFIG_PLAT_S3C24XX)	+= samsung
219plat-$(CONFIG_PLAT_S5P)		+= samsung
220plat-$(CONFIG_PLAT_VERSATILE)	+= versatile
221
222ifeq ($(CONFIG_ARCH_EBSA110),y)
223# This is what happens if you forget the IOCS16 line.
224# PCMCIA cards stop working.
225CFLAGS_3c589_cs.o :=-DISA_SIXTEEN_BIT_PERIPHERAL
226export CFLAGS_3c589_cs.o
227endif
228
229# The byte offset of the kernel image in RAM from the start of RAM.
230TEXT_OFFSET := $(textofs-y)
231
232# The first directory contains additional information for the boot setup code
233ifneq ($(machine-y),)
234MACHINE  := arch/arm/mach-$(word 1,$(machine-y))/
235else
236MACHINE  :=
237endif
238ifeq ($(CONFIG_ARCH_MULTIPLATFORM),y)
239MACHINE  :=
240endif
241
242machdirs := $(patsubst %,arch/arm/mach-%/,$(machine-y))
243platdirs := $(patsubst %,arch/arm/plat-%/,$(plat-y))
244
245ifneq ($(CONFIG_ARCH_MULTIPLATFORM),y)
246ifeq ($(KBUILD_SRC),)
247KBUILD_CPPFLAGS += $(patsubst %,-I%include,$(machdirs) $(platdirs))
248else
249KBUILD_CPPFLAGS += $(patsubst %,-I$(srctree)/%include,$(machdirs) $(platdirs))
250endif
251endif
252
253export	TEXT_OFFSET GZFLAGS MMUEXT
254
255# Do we have FASTFPE?
256FASTFPE		:=arch/arm/fastfpe
257ifeq ($(FASTFPE),$(wildcard $(FASTFPE)))
258FASTFPE_OBJ	:=$(FASTFPE)/
259endif
260
261core-$(CONFIG_FPE_NWFPE)	+= arch/arm/nwfpe/
262core-$(CONFIG_FPE_FASTFPE)	+= $(FASTFPE_OBJ)
263core-$(CONFIG_VFP)		+= arch/arm/vfp/
264core-$(CONFIG_XEN)		+= arch/arm/xen/
265core-$(CONFIG_KVM_ARM_HOST) 	+= arch/arm/kvm/
266
267# If we have a machine-specific directory, then include it in the build.
268core-y				+= arch/arm/kernel/ arch/arm/mm/ arch/arm/common/
269core-y				+= arch/arm/net/
270core-y				+= arch/arm/crypto/
271core-y				+= $(machdirs) $(platdirs)
272
273drivers-$(CONFIG_OPROFILE)      += arch/arm/oprofile/
274
275libs-y				:= arch/arm/lib/ $(libs-y)
276
277# Default target when executing plain make
278ifeq ($(CONFIG_XIP_KERNEL),y)
279KBUILD_IMAGE := xipImage
280else
281KBUILD_IMAGE := zImage
282endif
283
284# Build the DT binary blobs if we have OF configured
285ifeq ($(CONFIG_USE_OF),y)
286KBUILD_DTBS := dtbs
287endif
288
289all:	$(KBUILD_IMAGE) $(KBUILD_DTBS)
290
291boot := arch/arm/boot
292
293archprepare:
294	$(Q)$(MAKE) $(build)=arch/arm/tools include/generated/mach-types.h
295
296# Convert bzImage to zImage
297bzImage: zImage
298
299BOOT_TARGETS	= zImage Image xipImage bootpImage uImage
300INSTALL_TARGETS	= zinstall uinstall install
301
302PHONY += bzImage $(BOOT_TARGETS) $(INSTALL_TARGETS)
303
304$(BOOT_TARGETS): vmlinux
305	$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/$@
306
307$(INSTALL_TARGETS):
308	$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
309
310%.dtb: | scripts
311	$(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) $(boot)/dts/$@
312
313PHONY += dtbs
314dtbs: scripts
315	$(Q)$(MAKE) $(build)=$(boot)/dts MACHINE=$(MACHINE) dtbs
316
317# We use MRPROPER_FILES and CLEAN_FILES now
318archclean:
319	$(Q)$(MAKE) $(clean)=$(boot)
320
321# My testing targets (bypasses dependencies)
322bp:;	$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $(boot)/bootpImage
323i zi:;	$(Q)$(MAKE) $(build)=$(boot) MACHINE=$(MACHINE) $@
324
325
326define archhelp
327  echo  '* zImage        - Compressed kernel image (arch/$(ARCH)/boot/zImage)'
328  echo  '  Image         - Uncompressed kernel image (arch/$(ARCH)/boot/Image)'
329  echo  '* xipImage      - XIP kernel image, if configured (arch/$(ARCH)/boot/xipImage)'
330  echo  '  uImage        - U-Boot wrapped zImage'
331  echo  '  bootpImage    - Combined zImage and initial RAM disk'
332  echo  '                  (supply initrd image via make variable INITRD=<path>)'
333  echo  '* dtbs          - Build device tree blobs for enabled boards'
334  echo  '  install       - Install uncompressed kernel'
335  echo  '  zinstall      - Install compressed kernel'
336  echo  '  uinstall      - Install U-Boot wrapped compressed kernel'
337  echo  '                  Install using (your) ~/bin/$(INSTALLKERNEL) or'
338  echo  '                  (distribution) /sbin/$(INSTALLKERNEL) or'
339  echo  '                  install to $$(INSTALL_PATH) and run lilo'
340endef
341