xref: /linux/arch/parisc/Kconfig (revision 36f353a1ebf88280f58d1ebfe2731251d9159456)
1# SPDX-License-Identifier: GPL-2.0
2config PARISC
3	def_bool y
4	select ALTERNATE_USER_ADDRESS_SPACE
5	select ARCH_32BIT_OFF_T if !64BIT
6	select ARCH_MIGHT_HAVE_PC_PARPORT
7	select HAVE_FUNCTION_TRACER
8	select HAVE_FUNCTION_GRAPH_TRACER
9	select HAVE_SYSCALL_TRACEPOINTS
10	select ARCH_WANT_FRAME_POINTERS
11	select ARCH_HAS_CPU_CACHE_ALIASING
12	select ARCH_HAS_DMA_ALLOC if PA11
13	select ARCH_HAS_ELF_RANDOMIZE
14	select ARCH_HAS_STRICT_KERNEL_RWX
15	select ARCH_HAS_STRICT_MODULE_RWX
16	select ARCH_HAS_UBSAN
17	select ARCH_HAS_PTE_SPECIAL
18	select ARCH_NO_SG_CHAIN
19	select ARCH_SUPPORTS_HUGETLBFS if PA20
20	select ARCH_SUPPORTS_MEMORY_FAILURE
21	select ARCH_STACKWALK
22	select ARCH_HAS_DEBUG_VM_PGTABLE
23	select HAVE_RELIABLE_STACKTRACE
24	select DMA_OPS
25	select RTC_CLASS
26	select RTC_DRV_GENERIC
27	select INIT_ALL_POSSIBLE
28	select BUG
29	select HAVE_KERNEL_UNCOMPRESSED
30	select HAVE_PCI
31	select HAVE_PERF_EVENTS
32	select HAVE_KERNEL_BZIP2
33	select HAVE_KERNEL_GZIP
34	select HAVE_KERNEL_LZ4
35	select HAVE_KERNEL_LZMA
36	select HAVE_KERNEL_LZO
37	select HAVE_KERNEL_XZ
38	select GENERIC_ATOMIC64 if !64BIT
39	select GENERIC_IRQ_PROBE
40	select GENERIC_PCI_IOMAP
41	select GENERIC_IOREMAP
42	select ARCH_HAVE_NMI_SAFE_CMPXCHG
43	select GENERIC_SMP_IDLE_THREAD
44	select GENERIC_ARCH_TOPOLOGY if SMP
45	select GENERIC_CPU_DEVICES if !SMP
46	select GENERIC_LIB_DEVMEM_IS_ALLOWED
47	select SYSCTL_ARCH_UNALIGN_ALLOW
48	select SYSCTL_EXCEPTION_TRACE
49	select HAVE_MOD_ARCH_SPECIFIC
50	select MODULES_USE_ELF_RELA
51	select CLONE_BACKWARDS
52	select TTY # Needed for pdc_cons.c
53	select HAS_IOPORT if PCI || EISA
54	select HAVE_DEBUG_STACKOVERFLOW
55	select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT
56	select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT
57	select HAVE_ARCH_MMAP_RND_BITS
58	select HAVE_ARCH_AUDITSYSCALL
59	select HAVE_ARCH_HASH
60	select HAVE_ARCH_JUMP_LABEL
61	select HAVE_ARCH_JUMP_LABEL_RELATIVE
62	select HAVE_ARCH_KFENCE
63	select HAVE_ARCH_SECCOMP_FILTER
64	select HAVE_ARCH_TRACEHOOK
65	select HAVE_EBPF_JIT
66	select ARCH_WANT_DEFAULT_BPF_JIT
67	select HAVE_REGS_AND_STACK_ACCESS_API
68	select HOTPLUG_CORE_SYNC_DEAD if HOTPLUG_CPU
69	select GENERIC_SCHED_CLOCK
70	select GENERIC_IRQ_MIGRATION if SMP
71	select HAVE_UNSTABLE_SCHED_CLOCK if SMP
72	select LEGACY_TIMER_TICK
73	select CPU_NO_EFFICIENT_FFS
74	select THREAD_INFO_IN_TASK
75	select NEED_DMA_MAP_STATE
76	select NEED_SG_DMA_LENGTH
77	select HAVE_ARCH_KGDB
78	select HAVE_KPROBES
79	select HAVE_KRETPROBES
80	select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1)
81	select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE
82	select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE
83	select HAVE_KPROBES_ON_FTRACE
84	select HAVE_DYNAMIC_FTRACE_WITH_REGS
85	select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS
86	select TRACE_IRQFLAGS_SUPPORT
87	select HAVE_FUNCTION_DESCRIPTORS if 64BIT
88
89	help
90	  The PA-RISC microprocessor is designed by Hewlett-Packard and used
91	  in many of their workstations & servers (HP9000 700 and 800 series,
92	  and later HP3000 series).  The PA-RISC Linux project home page is
93	  at <https://parisc.wiki.kernel.org>.
94
95config CPU_BIG_ENDIAN
96	def_bool y
97
98config MMU
99	def_bool y
100
101config STACK_GROWSUP
102	def_bool y
103
104config GENERIC_LOCKBREAK
105	bool
106	default y
107	depends on SMP && PREEMPTION
108
109config ARCH_HAS_ILOG2_U32
110	bool
111	default n
112
113config ARCH_HAS_ILOG2_U64
114	bool
115	default n
116
117config GENERIC_BUG
118	def_bool y
119	depends on BUG
120	select GENERIC_BUG_RELATIVE_POINTERS if 64BIT
121
122config GENERIC_BUG_RELATIVE_POINTERS
123	bool
124
125config GENERIC_HWEIGHT
126	bool
127	default y
128
129config GENERIC_CALIBRATE_DELAY
130	bool
131	default y
132
133config TIME_LOW_RES
134	bool
135	depends on SMP
136	default y
137
138config ARCH_MMAP_RND_BITS_MIN
139	default 18 if 64BIT
140	default 8
141
142config ARCH_MMAP_RND_COMPAT_BITS_MIN
143	default 8
144
145config ARCH_MMAP_RND_BITS_MAX
146	default 18 if 64BIT
147	default 13
148
149config ARCH_MMAP_RND_COMPAT_BITS_MAX
150	default 13
151
152# unless you want to implement ACPI on PA-RISC ... ;-)
153config PM
154	bool
155
156config STACKTRACE_SUPPORT
157	def_bool y
158
159config LOCKDEP_SUPPORT
160	bool
161	default y
162
163config ISA_DMA_API
164	bool
165
166config ARCH_MAY_HAVE_PC_FDC
167	bool
168	depends on BROKEN
169	default y
170
171config PGTABLE_LEVELS
172	int
173	default 3 if 64BIT && PARISC_PAGE_SIZE_4KB
174	default 2
175
176menu "Processor type and features"
177
178choice
179	prompt "Processor type"
180	default PA7000 if "$(ARCH)" = "parisc"
181
182config PA7000
183	bool "PA7000/PA7100" if "$(ARCH)" = "parisc"
184	help
185	  This is the processor type of your CPU.  This information is
186	  used for optimizing purposes.  In order to compile a kernel
187	  that can run on all 32-bit PA CPUs (albeit not optimally fast),
188	  you can specify "PA7000" here.
189
190	  Specifying "PA8000" here will allow you to select a 64-bit kernel
191	  which is required on some machines.
192
193config PA7100LC
194	bool "PA7100LC" if "$(ARCH)" = "parisc"
195	help
196	  Select this option for the PCX-L processor, as used in the
197	  712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748,
198	  D200, D210, D300, D310 and E-class
199
200config PA7200
201	bool "PA7200" if "$(ARCH)" = "parisc"
202	help
203	  Select this option for the PCX-T' processor, as used in the
204	  C100, C110, J100, J110, J210XC, D250, D260, D350, D360,
205	  K100, K200, K210, K220, K400, K410 and K420
206
207config PA7300LC
208	bool "PA7300LC" if "$(ARCH)" = "parisc"
209	help
210	  Select this option for the PCX-L2 processor, as used in the
211	  744, A180, B132L, B160L, B180L, C132L, C160L, C180L,
212	  D220, D230, D320 and D330.
213
214config PA8X00
215	bool "PA8000 and up"
216	help
217	  Select this option for PCX-U to PCX-W2 processors.
218
219endchoice
220
221# Define implied options from the CPU selection here
222
223config PA20
224	def_bool y
225	depends on PA8X00
226
227config PA11
228	def_bool y
229	depends on PA7000 || PA7100LC || PA7200 || PA7300LC
230	select ARCH_HAS_SYNC_DMA_FOR_CPU
231	select ARCH_HAS_SYNC_DMA_FOR_DEVICE
232
233config PREFETCH
234	def_bool y
235	depends on PA8X00 || PA7200
236
237config PARISC_HUGE_KERNEL
238	def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST
239
240config MLONGCALLS
241	def_bool y if PARISC_HUGE_KERNEL
242	bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL
243	depends on PA8X00
244	help
245	  If you configure the kernel to include many drivers built-in instead
246	  as modules, the kernel executable may become too big, so that the
247	  linker will not be able to resolve some long branches and fails to link
248	  your vmlinux kernel. In that case enabling this option will help you
249	  to overcome this limit by using the -mlong-calls compiler option.
250
251	  Usually you want to say N here, unless you e.g. want to build
252	  a kernel which includes all necessary drivers built-in and which can
253	  be used for TFTP booting without the need to have an initrd ramdisk.
254
255	  Enabling this option will probably slow down your kernel.
256
257config 64BIT
258	def_bool y if "$(ARCH)" = "parisc64"
259	bool "64-bit kernel" if "$(ARCH)" = "parisc"
260	depends on PA8X00
261	help
262	  Enable this if you want to support 64bit kernel on PA-RISC platform.
263
264	  At the moment, only people willing to use more than 2GB of RAM,
265	  or having a 64bit-only capable PA-RISC machine should say Y here.
266
267	  Since there is no 64bit userland on PA-RISC, there is no point to
268	  enable this option otherwise. The 64bit kernel is significantly bigger
269	  and slower than the 32bit one.
270
271choice
272	prompt "Kernel page size"
273	default PARISC_PAGE_SIZE_4KB
274
275config PARISC_PAGE_SIZE_4KB
276	bool "4KB"
277	select HAVE_PAGE_SIZE_4KB
278	help
279	  This lets you select the page size of the kernel.  For best
280	  performance, a page size of 16KB is recommended.  For best
281	  compatibility with 32bit applications, a page size of 4KB should be
282	  selected (the vast majority of 32bit binaries work perfectly fine
283	  with a larger page size).
284
285	  4KB                For best 32bit compatibility
286	  16KB               For best performance
287	  64KB               For best performance, might give more overhead.
288
289	  If you don't know what to do, choose 4KB.
290
291config PARISC_PAGE_SIZE_16KB
292	bool "16KB"
293	select HAVE_PAGE_SIZE_16KB
294	depends on PA8X00 && BROKEN && !KFENCE
295
296config PARISC_PAGE_SIZE_64KB
297	bool "64KB"
298	select HAVE_PAGE_SIZE_64KB
299	depends on PA8X00 && BROKEN && !KFENCE
300
301endchoice
302
303config SMP
304	bool "Symmetric multi-processing support"
305	help
306	  This enables support for systems with more than one CPU. If you have
307	  a system with only one CPU, say N. If you have a system with more
308	  than one CPU, say Y.
309
310	  If you say N here, the kernel will run on uni- and multiprocessor
311	  machines, but will use only one CPU of a multiprocessor machine.
312	  On a uniprocessor machine, the kernel will run faster if you say N.
313
314	  See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
315	  available at <https://www.tldp.org/docs.html#howto>.
316
317	  If you don't know what to do here, say N.
318
319config SCHED_MC
320	bool "Multi-core scheduler support"
321	depends on GENERIC_ARCH_TOPOLOGY && PA8X00
322	help
323	  Multi-core scheduler support improves the CPU scheduler's decision
324	  making when dealing with multi-core CPU chips at a cost of slightly
325	  increased overhead in some places. If unsure say N here.
326
327config IRQSTACKS
328	bool "Use separate kernel stacks when processing interrupts"
329	default y
330	help
331	  If you say Y here the kernel will use separate kernel stacks
332	  for handling hard and soft interrupts.  This can help avoid
333	  overflowing the process kernel stacks.
334
335config HOTPLUG_CPU
336	bool
337	default y if SMP
338
339config ARCH_SELECT_MEMORY_MODEL
340	def_bool y
341	depends on 64BIT
342
343config ARCH_SPARSEMEM_ENABLE
344	def_bool y
345	depends on 64BIT
346
347config ARCH_FLATMEM_ENABLE
348	def_bool y
349
350config ARCH_SPARSEMEM_DEFAULT
351	def_bool y
352	depends on ARCH_SPARSEMEM_ENABLE
353
354source "kernel/Kconfig.hz"
355
356config COMPAT
357	def_bool y
358	depends on 64BIT
359
360config AUDIT_ARCH
361	def_bool y
362
363config NR_CPUS
364	int "Maximum number of CPUs (2-32)"
365	range 2 32
366	depends on SMP
367	default "8" if 64BIT
368	default "16"
369
370endmenu
371
372config ARCH_SUPPORTS_KEXEC
373	def_bool y
374
375config ARCH_SUPPORTS_KEXEC_FILE
376	def_bool y
377
378config ARCH_SELECTS_KEXEC_FILE
379	def_bool y
380	depends on KEXEC_FILE
381	select KEXEC_ELF
382
383source "drivers/parisc/Kconfig"
384