xref: /openbmc/linux/arch/openrisc/Kconfig (revision c0c74acb)
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 GPIOLIB
14        select HAVE_ARCH_TRACEHOOK
15	select SPARSE_IRQ
16	select GENERIC_IRQ_CHIP
17	select GENERIC_IRQ_PROBE
18	select GENERIC_IRQ_SHOW
19	select GENERIC_IOMAP
20	select GENERIC_CPU_DEVICES
21	select HAVE_UID16
22	select GENERIC_ATOMIC64
23	select GENERIC_CLOCKEVENTS
24	select GENERIC_STRNCPY_FROM_USER
25	select GENERIC_STRNLEN_USER
26	select MODULES_USE_ELF_RELA
27	select HAVE_DEBUG_STACKOVERFLOW
28	select OR1K_PIC
29	select CPU_NO_EFFICIENT_FFS if !OPENRISC_HAVE_INST_FF1
30	select NO_BOOTMEM
31
32config MMU
33	def_bool y
34
35config RWSEM_GENERIC_SPINLOCK
36	def_bool y
37
38config RWSEM_XCHGADD_ALGORITHM
39	def_bool n
40
41config GENERIC_HWEIGHT
42	def_bool y
43
44config NO_IOPORT_MAP
45	def_bool y
46
47config TRACE_IRQFLAGS_SUPPORT
48        def_bool y
49
50# For now, use generic checksum functions
51#These can be reimplemented in assembly later if so inclined
52config GENERIC_CSUM
53        def_bool y
54
55source "init/Kconfig"
56
57source "kernel/Kconfig.freezer"
58
59menu "Processor type and features"
60
61choice
62	prompt "Subarchitecture"
63	default OR1K_1200
64
65config OR1K_1200
66	bool "OR1200"
67	help
68	  Generic OpenRISC 1200 architecture
69
70endchoice
71
72config OPENRISC_BUILTIN_DTB
73        string "Builtin DTB"
74        default ""
75
76menu "Class II Instructions"
77
78config OPENRISC_HAVE_INST_FF1
79	bool "Have instruction l.ff1"
80	default y
81	help
82	  Select this if your implementation has the Class II instruction l.ff1
83
84config OPENRISC_HAVE_INST_FL1
85	bool "Have instruction l.fl1"
86	default y
87	help
88	  Select this if your implementation has the Class II instruction l.fl1
89
90config OPENRISC_HAVE_INST_MUL
91	bool "Have instruction l.mul for hardware multiply"
92	default y
93	help
94	  Select this if your implementation has a hardware multiply instruction
95
96config OPENRISC_HAVE_INST_DIV
97	bool "Have instruction l.div for hardware divide"
98	default y
99	help
100	  Select this if your implementation has a hardware divide instruction
101endmenu
102
103config NR_CPUS
104	int
105	default "1"
106
107source kernel/Kconfig.hz
108source kernel/Kconfig.preempt
109source "mm/Kconfig"
110
111config OPENRISC_NO_SPR_SR_DSX
112	bool "use SPR_SR_DSX software emulation" if OR1K_1200
113	default y
114	help
115	  SPR_SR_DSX bit is status register bit indicating whether
116	  the last exception has happened in delay slot.
117
118	  OpenRISC architecture makes it optional to have it implemented
119	  in hardware and the OR1200 does not have it.
120
121	  Say N here if you know that your OpenRISC processor has
122	  SPR_SR_DSX bit implemented. Say Y if you are unsure.
123
124config CMDLINE
125        string "Default kernel command string"
126        default ""
127        help
128          On some architectures there is currently no way for the boot loader
129          to pass arguments to the kernel. For these architectures, you should
130          supply some command-line options at build time by entering them
131          here.
132
133menu "Debugging options"
134
135config JUMP_UPON_UNHANDLED_EXCEPTION
136	bool "Try to die gracefully"
137	default y
138	help
139	  Now this puts kernel into infinite loop after first oops. Till
140	  your kernel crashes this doesn't have any influence.
141
142	  Say Y if you are unsure.
143
144config OPENRISC_ESR_EXCEPTION_BUG_CHECK
145	bool "Check for possible ESR exception bug"
146	default n
147	help
148	  This option enables some checks that might expose some problems
149          in kernel.
150
151	  Say N if you are unsure.
152
153endmenu
154
155endmenu
156
157menu "Executable file formats"
158
159source "fs/Kconfig.binfmt"
160
161endmenu
162
163source "net/Kconfig"
164
165source "drivers/Kconfig"
166
167source "fs/Kconfig"
168
169source "security/Kconfig"
170
171source "crypto/Kconfig"
172
173source "lib/Kconfig"
174
175menu "Kernel hacking"
176
177source "lib/Kconfig.debug"
178
179endmenu
180