xref: /openbmc/linux/arch/openrisc/Kconfig (revision 56d06fa2)
1#
2# For a description of the syntax of this configuration file,
3# see Documentation/kbuild/kconfig-language.txt.
4#
5
6config OPENRISC
7	def_bool y
8	select OF
9	select OF_EARLY_FLATTREE
10	select IRQ_DOMAIN
11	select HANDLE_DOMAIN_IRQ
12	select HAVE_MEMBLOCK
13	select ARCH_REQUIRE_GPIOLIB
14        select HAVE_ARCH_TRACEHOOK
15	select GENERIC_IRQ_CHIP
16	select GENERIC_IRQ_PROBE
17	select GENERIC_IRQ_SHOW
18	select GENERIC_IOMAP
19	select GENERIC_CPU_DEVICES
20	select HAVE_UID16
21	select GENERIC_ATOMIC64
22	select GENERIC_CLOCKEVENTS
23	select GENERIC_STRNCPY_FROM_USER
24	select GENERIC_STRNLEN_USER
25	select MODULES_USE_ELF_RELA
26	select HAVE_DEBUG_STACKOVERFLOW
27	select OR1K_PIC
28
29config MMU
30	def_bool y
31
32config RWSEM_GENERIC_SPINLOCK
33	def_bool y
34
35config RWSEM_XCHGADD_ALGORITHM
36	def_bool n
37
38config GENERIC_HWEIGHT
39	def_bool y
40
41config NO_IOPORT_MAP
42	def_bool y
43
44config TRACE_IRQFLAGS_SUPPORT
45        def_bool y
46
47# For now, use generic checksum functions
48#These can be reimplemented in assembly later if so inclined
49config GENERIC_CSUM
50        def_bool y
51
52source "init/Kconfig"
53
54source "kernel/Kconfig.freezer"
55
56menu "Processor type and features"
57
58choice
59	prompt "Subarchitecture"
60	default OR1K_1200
61
62config OR1K_1200
63	bool "OR1200"
64	help
65	  Generic OpenRISC 1200 architecture
66
67endchoice
68
69config OPENRISC_BUILTIN_DTB
70        string "Builtin DTB"
71        default ""
72
73menu "Class II Instructions"
74
75config OPENRISC_HAVE_INST_FF1
76	bool "Have instruction l.ff1"
77	default y
78	help
79	  Select this if your implementation has the Class II instruction l.ff1
80
81config OPENRISC_HAVE_INST_FL1
82	bool "Have instruction l.fl1"
83	default y
84	help
85	  Select this if your implementation has the Class II instruction l.fl1
86
87config OPENRISC_HAVE_INST_MUL
88	bool "Have instruction l.mul for hardware multiply"
89	default y
90	help
91	  Select this if your implementation has a hardware multiply instruction
92
93config OPENRISC_HAVE_INST_DIV
94	bool "Have instruction l.div for hardware divide"
95	default y
96	help
97	  Select this if your implementation has a hardware divide instruction
98endmenu
99
100
101source kernel/Kconfig.hz
102source kernel/Kconfig.preempt
103source "mm/Kconfig"
104
105config OPENRISC_NO_SPR_SR_DSX
106	bool "use SPR_SR_DSX software emulation" if OR1K_1200
107	default y
108	help
109	  SPR_SR_DSX bit is status register bit indicating whether
110	  the last exception has happened in delay slot.
111
112	  OpenRISC architecture makes it optional to have it implemented
113	  in hardware and the OR1200 does not have it.
114
115	  Say N here if you know that your OpenRISC processor has
116	  SPR_SR_DSX bit implemented. Say Y if you are unsure.
117
118config CMDLINE
119        string "Default kernel command string"
120        default ""
121        help
122          On some architectures there is currently no way for the boot loader
123          to pass arguments to the kernel. For these architectures, you should
124          supply some command-line options at build time by entering them
125          here.
126
127menu "Debugging options"
128
129config JUMP_UPON_UNHANDLED_EXCEPTION
130	bool "Try to die gracefully"
131	default y
132	help
133	  Now this puts kernel into infinite loop after first oops. Till
134	  your kernel crashes this doesn't have any influence.
135
136	  Say Y if you are unsure.
137
138config OPENRISC_ESR_EXCEPTION_BUG_CHECK
139	bool "Check for possible ESR exception bug"
140	default n
141	help
142	  This option enables some checks that might expose some problems
143          in kernel.
144
145	  Say N if you are unsure.
146
147endmenu
148
149endmenu
150
151menu "Executable file formats"
152
153source "fs/Kconfig.binfmt"
154
155endmenu
156
157source "net/Kconfig"
158
159source "drivers/Kconfig"
160
161source "fs/Kconfig"
162
163source "security/Kconfig"
164
165source "crypto/Kconfig"
166
167source "lib/Kconfig"
168
169menu "Kernel hacking"
170
171source "lib/Kconfig.debug"
172
173endmenu
174