projects/linux·blob master · refs

193 lines · 6.5 KiB

1#
2# arch/sh/Makefile
3#
4# Copyright (C) 1999 Kaz Kojima
5# Copyright (C) 2002 - 2008 Paul Mundt
6# Copyright (C) 2002 M. R. Brown
7#
8# This file is subject to the terms and conditions of the GNU General Public
9# License. See the file "COPYING" in the main directory of this archive
10# for more details.
11#
12ifdef cross_compiling
13 ifeq ($(CROSS_COMPILE),)
14 CROSS_COMPILE := $(call cc-cross-prefix, sh-linux- sh-linux-gnu- sh-unknown-linux-gnu-)
15 endif
16endif
17
18KBUILD_DEFCONFIG := shx3_defconfig
19
20isa-y := any
21isa-$(CONFIG_SH_DSP) := sh
22isa-$(CONFIG_CPU_SH2) := sh2
23isa-$(CONFIG_CPU_SH2A) := sh2a
24isa-$(CONFIG_CPU_SH3) := sh3
25isa-$(CONFIG_CPU_SH4) := sh4
26isa-$(CONFIG_CPU_SH4A) := sh4a
27isa-$(CONFIG_CPU_SH4AL_DSP) := sh4al
28
29isa-$(CONFIG_SH_DSP) := $(isa-y)-dsp
30isa-y := $(isa-y)-up
31
32cflags-$(CONFIG_CPU_SH2) := $(call cc-option,-m2,)
33cflags-$(CONFIG_CPU_J2) += $(call cc-option,-mj2,)
34cflags-$(CONFIG_CPU_SH2A) += $(call cc-option,-m2a,) \
35 $(call cc-option,-m2a-nofpu,) \
36 $(call cc-option,-m4-nofpu,)
37cflags-$(CONFIG_CPU_SH3) := $(call cc-option,-m3,)
38cflags-$(CONFIG_CPU_SH4) := $(call cc-option,-m4,) \
39 $(call cc-option,-mno-implicit-fp,-m4-nofpu)
40cflags-$(CONFIG_CPU_SH4A) += $(call cc-option,-m4a,) \
41 $(call cc-option,-m4a-nofpu,)
42cflags-$(CONFIG_CPU_SH4AL_DSP) += $(call cc-option,-m4al,)
43
44ifeq ($(cflags-y),)
45#
46# In the case where we are stuck with a compiler that has been uselessly
47# restricted to a particular ISA, a favourite default of newer GCCs when
48# extensive multilib targets are not provided, ensure we get the best fit
49# regarding FP generation. This is intentionally stupid (albeit many
50# orders of magnitude less than GCC's default behaviour), as anything
51# with a large number of multilib targets better have been built
52# correctly for the target in mind.
53#
54cflags-y += $(shell $(CC) $(KBUILD_CFLAGS) -print-multi-lib | \
55 grep nofpu | sed q | sed -e 's/^/-/;s/;.*$$//')
56# At this point, anything goes.
57isaflags-y := $(call as-option,-Wa$(comma)-isa=any,)
58else
59#
60# -Wa,-isa= tuning implies -Wa,-dsp for the versions of binutils that
61# support it, while -Wa,-dsp by itself limits the range of usable opcodes
62# on certain CPU subtypes. Try the ISA variant first, and if that fails,
63# fall back on -Wa,-dsp for the old binutils versions. Even without DSP
64# opcodes, we always want the best ISA tuning the version of binutils
65# will provide.
66#
67isaflags-y := $(call as-option,-Wa$(comma)-isa=$(isa-y),)
68
69isaflags-$(CONFIG_SH_DSP) := \
70 $(call as-option,-Wa$(comma)-isa=$(isa-y),-Wa$(comma)-dsp)
71endif
72
73cflags-$(CONFIG_CPU_BIG_ENDIAN) += -mb
74cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -ml
75
76cflags-y += $(call cc-option,-mno-fdpic)
77cflags-y += $(isaflags-y) -ffreestanding
78
79OBJCOPYFLAGS := -O binary -R .note -R .note.gnu.build-id -R .comment \
80 -R .stab -R .stabstr -S
81
82# Give the various platforms the opportunity to set default image types
83defaultimage-y := zImage
84defaultimage-$(CONFIG_SH_SH7785LCR) := uImage
85defaultimage-$(CONFIG_SH_RSK) := uImage
86defaultimage-$(CONFIG_SH_URQUELL) := uImage
87defaultimage-$(CONFIG_SH_MIGOR) := uImage
88defaultimage-$(CONFIG_SH_AP325RXA) := uImage
89defaultimage-$(CONFIG_SH_SH7757LCR) := uImage
90defaultimage-$(CONFIG_SH_7724_SOLUTION_ENGINE) := uImage
91defaultimage-$(CONFIG_SH_7206_SOLUTION_ENGINE) := vmlinux
92defaultimage-$(CONFIG_SH_7619_SOLUTION_ENGINE) := vmlinux
93
94# Set some sensible Kbuild defaults
95boot := arch/sh/boot
96KBUILD_IMAGE := $(boot)/$(defaultimage-y)
97
98#
99# Choosing incompatible machines durings configuration will result in
100# error messages during linking.
101#
102UTS_MACHINE := sh
103LDFLAGS_vmlinux += -e _stext
104
105ifdef CONFIG_CPU_LITTLE_ENDIAN
106ld_bfd := elf32-sh-linux
107LDFLAGS_vmlinux += --defsym jiffies=jiffies_64 --oformat $(ld_bfd)
108KBUILD_LDFLAGS += -EL
109else
110ld_bfd := elf32-shbig-linux
111LDFLAGS_vmlinux += --defsym jiffies=jiffies_64+4 --oformat $(ld_bfd)
112KBUILD_LDFLAGS += -EB
113endif
114
115export ld_bfd
116
117# Mach groups
118machdir-$(CONFIG_SOLUTION_ENGINE) += mach-se
119machdir-$(CONFIG_SH_DREAMCAST) += mach-dreamcast
120machdir-$(CONFIG_SH_SH03) += mach-sh03
121machdir-$(CONFIG_SH_MIGOR) += mach-migor
122machdir-$(CONFIG_SH_KFR2R09) += mach-kfr2r09
123machdir-$(CONFIG_SH_ECOVEC) += mach-ecovec24
124machdir-$(CONFIG_SH_SDK7786) += mach-sdk7786
125machdir-$(CONFIG_SH_X3PROTO) += mach-x3proto
126machdir-$(CONFIG_SH_LANDISK) += mach-landisk
127machdir-y += mach-common
128
129#
130# CPU header paths
131#
132# These are ordered by optimization level. A CPU family that is a subset
133# of another (ie, SH-2A / SH-2), is picked up first, with increasing
134# levels of genericness if nothing more suitable is situated in the
135# hierarchy.
136#
137# As an example, in order of preference, SH-2A > SH-2 > common definitions.
138#
139cpuincdir-$(CONFIG_CPU_SH2A) += cpu-sh2a
140cpuincdir-$(CONFIG_CPU_SH2) += cpu-sh2
141cpuincdir-$(CONFIG_CPU_SH3) += cpu-sh3
142cpuincdir-$(CONFIG_CPU_SH4A) += cpu-sh4a
143cpuincdir-$(CONFIG_CPU_SH4) += cpu-sh4
144cpuincdir-y += cpu-common # Must be last
145
146drivers-y += arch/sh/drivers/
147
148KBUILD_CPPFLAGS += $(addprefix -I $(srctree)/arch/sh/include/, $(cpuincdir-y) $(machdir-y))
149KBUILD_CFLAGS += -pipe $(cflags-y)
150KBUILD_AFLAGS += $(cflags-y)
151
152ifeq ($(CONFIG_MCOUNT),y)
153 KBUILD_CFLAGS += -pg
154endif
155
156ifeq ($(CONFIG_DWARF_UNWINDER),y)
157 KBUILD_CFLAGS += -fasynchronous-unwind-tables
158endif
159
160libs-y := arch/sh/lib/ $(libs-y)
161
162BOOT_TARGETS = uImage uImage.bz2 uImage.gz uImage.lzma uImage.xz uImage.lzo \
163 uImage.srec uImage.bin zImage vmlinux.bin vmlinux.srec \
164 romImage
165PHONY += $(BOOT_TARGETS)
166
167all: $(notdir $(KBUILD_IMAGE))
168
169$(BOOT_TARGETS): vmlinux
170 $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
171
172compressed: zImage
173
174archprepare:
175 $(Q)$(MAKE) $(build)=arch/sh/tools include/generated/machtypes.h
176
177archheaders:
178 $(Q)$(MAKE) $(build)=arch/sh/kernel/syscalls all
179
180define archhelp
181 @echo ' zImage - Compressed kernel image'
182 @echo ' romImage - Compressed ROM image, if supported'
183 @echo ' vmlinux.srec - Create an ELF S-record'
184 @echo ' vmlinux.bin - Create an uncompressed binary image'
185 @echo '* uImage - Alias to bootable U-Boot image'
186 @echo ' uImage.srec - Create an S-record for U-Boot'
187 @echo ' uImage.bin - Kernel-only image for U-Boot (bin)'
188 @echo '* uImage.gz - Kernel-only image for U-Boot (gzip)'
189 @echo ' uImage.bz2 - Kernel-only image for U-Boot (bzip2)'
190 @echo ' uImage.lzma - Kernel-only image for U-Boot (lzma)'
191 @echo ' uImage.xz - Kernel-only image for U-Boot (xz)'
192 @echo ' uImage.lzo - Kernel-only image for U-Boot (lzo)'
193endef