xref: /openbmc/linux/arch/sh/Makefile (revision 3c81195a04e13833196462ab398d8bcf282701f7)
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 #
12 ifdef cross_compiling
13   ifeq ($(CROSS_COMPILE),)
14     CROSS_COMPILE := $(call cc-cross-prefix, sh-linux- sh-linux-gnu- sh-unknown-linux-gnu-)
15   endif
16 endif
17 
18 KBUILD_DEFCONFIG	:= shx3_defconfig
19 
20 isa-y					:= any
21 isa-$(CONFIG_SH_DSP)			:= sh
22 isa-$(CONFIG_CPU_SH2)			:= sh2
23 isa-$(CONFIG_CPU_SH2A)			:= sh2a
24 isa-$(CONFIG_CPU_SH3)			:= sh3
25 isa-$(CONFIG_CPU_SH4)			:= sh4
26 isa-$(CONFIG_CPU_SH4A)			:= sh4a
27 isa-$(CONFIG_CPU_SH4AL_DSP)		:= sh4al
28 
29 isa-$(CONFIG_SH_DSP)			:= $(isa-y)-dsp
30 isa-y					:= $(isa-y)-up
31 
32 cflags-$(CONFIG_CPU_SH2)		:= $(call cc-option,-m2,)
33 cflags-$(CONFIG_CPU_J2)			+= $(call cc-option,-mj2,)
34 cflags-$(CONFIG_CPU_SH2A)		+= $(call cc-option,-m2a,) \
35 					   $(call cc-option,-m2a-nofpu,) \
36 					   $(call cc-option,-m4-nofpu,)
37 cflags-$(CONFIG_CPU_SH3)		:= $(call cc-option,-m3,)
38 cflags-$(CONFIG_CPU_SH4)		:= $(call cc-option,-m4,) \
39 	$(call cc-option,-mno-implicit-fp,-m4-nofpu)
40 cflags-$(CONFIG_CPU_SH4A)		+= $(call cc-option,-m4a,) \
41 					   $(call cc-option,-m4a-nofpu,)
42 cflags-$(CONFIG_CPU_SH4AL_DSP)		+= $(call cc-option,-m4al,)
43 
44 ifeq ($(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 #
54 cflags-y	+= $(shell $(CC) $(KBUILD_CFLAGS) -print-multi-lib | \
55 		     grep nofpu | sed q | sed -e 's/^/-/;s/;.*$$//')
56 # At this point, anything goes.
57 isaflags-y	:= $(call as-option,-Wa$(comma)-isa=any,)
58 else
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 #
67 isaflags-y	:= $(call as-option,-Wa$(comma)-isa=$(isa-y),)
68 
69 isaflags-$(CONFIG_SH_DSP)		:= \
70 	$(call as-option,-Wa$(comma)-isa=$(isa-y),-Wa$(comma)-dsp)
71 endif
72 
73 cflags-$(CONFIG_CPU_BIG_ENDIAN)		+= -mb
74 cflags-$(CONFIG_CPU_LITTLE_ENDIAN)	+= -ml
75 
76 cflags-y	+= $(call cc-option,-mno-fdpic)
77 cflags-y	+= $(isaflags-y) -ffreestanding
78 
79 OBJCOPYFLAGS	:= -O binary -R .note -R .note.gnu.build-id -R .comment \
80 		   -R .stab -R .stabstr -S
81 
82 # Give the various platforms the opportunity to set default image types
83 defaultimage-y					:= zImage
84 defaultimage-$(CONFIG_SH_SH7785LCR)		:= uImage
85 defaultimage-$(CONFIG_SH_RSK)			:= uImage
86 defaultimage-$(CONFIG_SH_URQUELL)		:= uImage
87 defaultimage-$(CONFIG_SH_MIGOR)			:= uImage
88 defaultimage-$(CONFIG_SH_AP325RXA)		:= uImage
89 defaultimage-$(CONFIG_SH_SH7757LCR)		:= uImage
90 defaultimage-$(CONFIG_SH_7724_SOLUTION_ENGINE)	:= uImage
91 defaultimage-$(CONFIG_SH_7206_SOLUTION_ENGINE)	:= vmlinux
92 defaultimage-$(CONFIG_SH_7619_SOLUTION_ENGINE)	:= vmlinux
93 
94 # Set some sensible Kbuild defaults
95 boot := arch/sh/boot
96 KBUILD_IMAGE		:= $(boot)/$(defaultimage-y)
97 
98 #
99 # Choosing incompatible machines durings configuration will result in
100 # error messages during linking.
101 #
102 UTS_MACHINE		:= sh
103 LDFLAGS_vmlinux		+= -e _stext
104 
105 ifdef CONFIG_CPU_LITTLE_ENDIAN
106 ld-bfd			:= elf32-sh-linux
107 LDFLAGS_vmlinux		+= --defsym jiffies=jiffies_64 --oformat $(ld-bfd)
108 KBUILD_LDFLAGS		+= -EL
109 else
110 ld-bfd			:= elf32-shbig-linux
111 LDFLAGS_vmlinux		+= --defsym jiffies=jiffies_64+4 --oformat $(ld-bfd)
112 KBUILD_LDFLAGS		+= -EB
113 endif
114 
115 export ld-bfd
116 
117 # Mach groups
118 machdir-$(CONFIG_SOLUTION_ENGINE)		+= mach-se
119 machdir-$(CONFIG_SH_DREAMCAST)			+= mach-dreamcast
120 machdir-$(CONFIG_SH_SH03)			+= mach-sh03
121 machdir-$(CONFIG_SH_MIGOR)			+= mach-migor
122 machdir-$(CONFIG_SH_KFR2R09)			+= mach-kfr2r09
123 machdir-$(CONFIG_SH_ECOVEC)			+= mach-ecovec24
124 machdir-$(CONFIG_SH_SDK7786)			+= mach-sdk7786
125 machdir-$(CONFIG_SH_X3PROTO)			+= mach-x3proto
126 machdir-$(CONFIG_SH_LANDISK)			+= mach-landisk
127 machdir-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 #
139 cpuincdir-$(CONFIG_CPU_SH2A)	+= cpu-sh2a
140 cpuincdir-$(CONFIG_CPU_SH2)	+= cpu-sh2
141 cpuincdir-$(CONFIG_CPU_SH3)	+= cpu-sh3
142 cpuincdir-$(CONFIG_CPU_SH4A)	+= cpu-sh4a
143 cpuincdir-$(CONFIG_CPU_SH4)	+= cpu-sh4
144 cpuincdir-y			+= cpu-common	# Must be last
145 
146 drivers-y			+= arch/sh/drivers/
147 
148 KBUILD_CPPFLAGS		+= $(addprefix -I $(srctree)/arch/sh/include/, $(cpuincdir-y) $(machdir-y))
149 KBUILD_CFLAGS		+= -pipe $(cflags-y)
150 KBUILD_AFLAGS		+= $(cflags-y)
151 
152 ifeq ($(CONFIG_MCOUNT),y)
153   KBUILD_CFLAGS += -pg
154 endif
155 
156 ifeq ($(CONFIG_DWARF_UNWINDER),y)
157   KBUILD_CFLAGS += -fasynchronous-unwind-tables
158 endif
159 
160 libs-y			:= arch/sh/lib/	$(libs-y)
161 
162 BOOT_TARGETS = uImage uImage.bz2 uImage.gz uImage.lzma uImage.xz uImage.lzo \
163 	       uImage.srec uImage.bin zImage vmlinux.bin vmlinux.srec \
164 	       romImage
165 PHONY += $(BOOT_TARGETS)
166 
167 all: $(notdir $(KBUILD_IMAGE))
168 
169 $(BOOT_TARGETS): vmlinux
170 	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
171 
172 compressed: zImage
173 
174 archprepare:
175 	$(Q)$(MAKE) $(build)=arch/sh/tools include/generated/machtypes.h
176 
177 archheaders:
178 	$(Q)$(MAKE) $(build)=arch/sh/kernel/syscalls all
179 
180 define 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)'
193 endef
194