xref: /openbmc/linux/arch/parisc/Kconfig (revision c8dbaa22)
1config PARISC
2	def_bool y
3	select ARCH_MIGHT_HAVE_PC_PARPORT
4	select HAVE_IDE
5	select HAVE_OPROFILE
6	select HAVE_FUNCTION_TRACER
7	select HAVE_FUNCTION_GRAPH_TRACER
8	select HAVE_SYSCALL_TRACEPOINTS
9	select ARCH_WANT_FRAME_POINTERS
10	select ARCH_HAS_ELF_RANDOMIZE
11	select ARCH_HAS_STRICT_KERNEL_RWX
12	select ARCH_HAS_UBSAN_SANITIZE_ALL
13	select ARCH_WANTS_UBSAN_NO_NULL
14	select ARCH_SUPPORTS_MEMORY_FAILURE
15	select RTC_CLASS
16	select RTC_DRV_GENERIC
17	select INIT_ALL_POSSIBLE
18	select HAVE_MEMBLOCK
19	select NO_BOOTMEM
20	select BUG
21	select BUILDTIME_EXTABLE_SORT
22	select HAVE_PERF_EVENTS
23	select HAVE_KERNEL_BZIP2
24	select HAVE_KERNEL_GZIP
25	select HAVE_KERNEL_LZ4
26	select HAVE_KERNEL_LZMA
27	select HAVE_KERNEL_LZO
28	select HAVE_KERNEL_XZ
29	select GENERIC_ATOMIC64 if !64BIT
30	select GENERIC_IRQ_PROBE
31	select GENERIC_PCI_IOMAP
32	select ARCH_HAVE_NMI_SAFE_CMPXCHG
33	select GENERIC_SMP_IDLE_THREAD
34	select GENERIC_STRNCPY_FROM_USER
35	select SYSCTL_ARCH_UNALIGN_ALLOW
36	select SYSCTL_EXCEPTION_TRACE
37	select HAVE_MOD_ARCH_SPECIFIC
38	select VIRT_TO_BUS
39	select MODULES_USE_ELF_RELA
40	select CLONE_BACKWARDS
41	select TTY # Needed for pdc_cons.c
42	select HAVE_DEBUG_STACKOVERFLOW
43	select HAVE_ARCH_AUDITSYSCALL
44	select HAVE_ARCH_HASH
45	select HAVE_ARCH_SECCOMP_FILTER
46	select HAVE_ARCH_TRACEHOOK
47	select GENERIC_SCHED_CLOCK
48	select HAVE_UNSTABLE_SCHED_CLOCK if SMP
49	select GENERIC_CLOCKEVENTS
50	select ARCH_NO_COHERENT_DMA_MMAP
51	select CPU_NO_EFFICIENT_FFS
52
53	help
54	  The PA-RISC microprocessor is designed by Hewlett-Packard and used
55	  in many of their workstations & servers (HP9000 700 and 800 series,
56	  and later HP3000 series).  The PA-RISC Linux project home page is
57	  at <http://www.parisc-linux.org/>.
58
59config CPU_BIG_ENDIAN
60	def_bool y
61
62config MMU
63	def_bool y
64
65config STACK_GROWSUP
66	def_bool y
67
68config GENERIC_LOCKBREAK
69	bool
70	default y
71	depends on SMP && PREEMPT
72
73config RWSEM_GENERIC_SPINLOCK
74	def_bool y
75
76config RWSEM_XCHGADD_ALGORITHM
77	bool
78
79config ARCH_HAS_ILOG2_U32
80	bool
81	default n
82
83config ARCH_HAS_ILOG2_U64
84	bool
85	default n
86
87config GENERIC_BUG
88	bool
89	default y
90	depends on BUG
91
92config GENERIC_HWEIGHT
93	bool
94	default y
95
96config GENERIC_CALIBRATE_DELAY
97	bool
98	default y
99
100config TIME_LOW_RES
101	bool
102	depends on SMP
103	default y
104
105# unless you want to implement ACPI on PA-RISC ... ;-)
106config PM
107	bool
108
109config STACKTRACE_SUPPORT
110	def_bool y
111
112config NEED_DMA_MAP_STATE
113	def_bool y
114
115config NEED_SG_DMA_LENGTH
116	def_bool y
117
118config ISA_DMA_API
119	bool
120
121config ARCH_MAY_HAVE_PC_FDC
122	bool
123	depends on BROKEN
124	default y
125
126config PGTABLE_LEVELS
127	int
128	default 3 if 64BIT && PARISC_PAGE_SIZE_4KB
129	default 2
130
131config SYS_SUPPORTS_HUGETLBFS
132	def_bool y if PA20
133
134source "init/Kconfig"
135
136source "kernel/Kconfig.freezer"
137
138
139menu "Processor type and features"
140
141choice
142	prompt "Processor type"
143	default PA7000
144
145config PA7000
146	bool "PA7000/PA7100"
147	---help---
148	  This is the processor type of your CPU.  This information is
149	  used for optimizing purposes.  In order to compile a kernel
150	  that can run on all 32-bit PA CPUs (albeit not optimally fast),
151	  you can specify "PA7000" here.
152
153	  Specifying "PA8000" here will allow you to select a 64-bit kernel
154	  which is required on some machines.
155
156config PA7100LC
157	bool "PA7100LC"
158	help
159	  Select this option for the PCX-L processor, as used in the
160	  712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748,
161	  D200, D210, D300, D310 and E-class
162
163config PA7200
164	bool "PA7200"
165	help
166	  Select this option for the PCX-T' processor, as used in the
167	  C100, C110, J100, J110, J210XC, D250, D260, D350, D360,
168	  K100, K200, K210, K220, K400, K410 and K420
169
170config PA7300LC
171	bool "PA7300LC"
172	help
173	  Select this option for the PCX-L2 processor, as used in the
174	  744, A180, B132L, B160L, B180L, C132L, C160L, C180L,
175	  D220, D230, D320 and D330.
176
177config PA8X00
178	bool "PA8000 and up"
179	help
180	  Select this option for PCX-U to PCX-W2 processors.
181
182endchoice
183
184# Define implied options from the CPU selection here
185
186config PA20
187	def_bool y
188	depends on PA8X00
189
190config PA11
191	def_bool y
192	depends on PA7000 || PA7100LC || PA7200 || PA7300LC
193
194config PREFETCH
195	def_bool y
196	depends on PA8X00 || PA7200
197
198config MLONGCALLS
199	bool "Enable the -mlong-calls compiler option for big kernels"
200	def_bool y if (!MODULES)
201	depends on PA8X00
202	help
203	  If you configure the kernel to include many drivers built-in instead
204	  as modules, the kernel executable may become too big, so that the
205	  linker will not be able to resolve some long branches and fails to link
206	  your vmlinux kernel. In that case enabling this option will help you
207	  to overcome this limit by using the -mlong-calls compiler option.
208
209	  Usually you want to say N here, unless you e.g. want to build
210	  a kernel which includes all necessary drivers built-in and which can
211	  be used for TFTP booting without the need to have an initrd ramdisk.
212
213	  Enabling this option will probably slow down your kernel.
214
215config 64BIT
216	bool "64-bit kernel"
217	depends on PA8X00
218	help
219	  Enable this if you want to support 64bit kernel on PA-RISC platform.
220
221	  At the moment, only people willing to use more than 2GB of RAM,
222	  or having a 64bit-only capable PA-RISC machine should say Y here.
223
224	  Since there is no 64bit userland on PA-RISC, there is no point to
225	  enable this option otherwise. The 64bit kernel is significantly bigger
226	  and slower than the 32bit one.
227
228choice
229	prompt "Kernel page size"
230	default PARISC_PAGE_SIZE_4KB
231
232config PARISC_PAGE_SIZE_4KB
233	bool "4KB"
234	help
235	  This lets you select the page size of the kernel.  For best
236	  performance, a page size of 16KB is recommended.  For best
237	  compatibility with 32bit applications, a page size of 4KB should be
238	  selected (the vast majority of 32bit binaries work perfectly fine
239	  with a larger page size).
240
241	  4KB                For best 32bit compatibility
242	  16KB               For best performance
243	  64KB               For best performance, might give more overhead.
244
245	  If you don't know what to do, choose 4KB.
246
247config PARISC_PAGE_SIZE_16KB
248	bool "16KB"
249	depends on PA8X00
250
251config PARISC_PAGE_SIZE_64KB
252	bool "64KB"
253	depends on PA8X00
254
255endchoice
256
257config SMP
258	bool "Symmetric multi-processing support"
259	---help---
260	  This enables support for systems with more than one CPU. If you have
261	  a system with only one CPU, say N. If you have a system with more
262	  than one CPU, say Y.
263
264	  If you say N here, the kernel will run on uni- and multiprocessor
265	  machines, but will use only one CPU of a multiprocessor machine. If
266	  you say Y here, the kernel will run on many, but not all,
267	  uniprocessor machines. On a uniprocessor machine, the kernel
268	  will run faster if you say N here.
269
270	  See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
271	  available at <http://www.tldp.org/docs.html#howto>.
272
273	  If you don't know what to do here, say N.
274
275config IRQSTACKS
276	bool "Use separate kernel stacks when processing interrupts"
277	default y
278	help
279	  If you say Y here the kernel will use separate kernel stacks
280	  for handling hard and soft interrupts.  This can help avoid
281	  overflowing the process kernel stacks.
282
283config HOTPLUG_CPU
284	bool
285	default y if SMP
286
287config ARCH_SELECT_MEMORY_MODEL
288	def_bool y
289	depends on 64BIT
290
291config ARCH_DISCONTIGMEM_ENABLE
292	def_bool y
293	depends on 64BIT
294
295config ARCH_FLATMEM_ENABLE
296	def_bool y
297
298config ARCH_DISCONTIGMEM_DEFAULT
299	def_bool y
300	depends on ARCH_DISCONTIGMEM_ENABLE
301
302config NODES_SHIFT
303	int
304	default "3"
305	depends on NEED_MULTIPLE_NODES
306
307source "kernel/Kconfig.preempt"
308source "kernel/Kconfig.hz"
309source "mm/Kconfig"
310
311config COMPAT
312	def_bool y
313	depends on 64BIT
314
315config SYSVIPC_COMPAT
316	def_bool y
317	depends on COMPAT && SYSVIPC
318
319config AUDIT_ARCH
320	def_bool y
321
322config NR_CPUS
323	int "Maximum number of CPUs (2-32)"
324	range 2 32
325	depends on SMP
326	default "32"
327
328endmenu
329
330
331source "drivers/parisc/Kconfig"
332
333
334menu "Executable file formats"
335
336source "fs/Kconfig.binfmt"
337
338endmenu
339
340source "net/Kconfig"
341
342source "drivers/Kconfig"
343
344source "fs/Kconfig"
345
346source "arch/parisc/Kconfig.debug"
347
348config SECCOMP
349	def_bool y
350	prompt "Enable seccomp to safely compute untrusted bytecode"
351	---help---
352	  This kernel feature is useful for number crunching applications
353	  that may need to compute untrusted bytecode during their
354	  execution. By using pipes or other transports made available to
355	  the process as file descriptors supporting the read/write
356	  syscalls, it's possible to isolate those applications in
357	  their own address space using seccomp. Once seccomp is
358	  enabled via prctl(PR_SET_SECCOMP), it cannot be disabled
359	  and the task is only allowed to execute a few safe syscalls
360	  defined by each seccomp mode.
361
362	  If unsure, say Y. Only embedded should say N here.
363
364source "security/Kconfig"
365
366source "crypto/Kconfig"
367
368source "lib/Kconfig"
369