xref: /linux/arch/parisc/Kconfig (revision b5ff52be)
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_DMA_OPS
14	select ARCH_HAS_ELF_RANDOMIZE
15	select ARCH_HAS_STRICT_KERNEL_RWX
16	select ARCH_HAS_STRICT_MODULE_RWX
17	select ARCH_HAS_UBSAN
18	select ARCH_HAS_PTE_SPECIAL
19	select ARCH_NO_SG_CHAIN
20	select ARCH_SPLIT_ARG64 if !64BIT
21	select ARCH_SUPPORTS_HUGETLBFS if PA20
22	select ARCH_SUPPORTS_MEMORY_FAILURE
23	select ARCH_STACKWALK
24	select ARCH_HAS_CACHE_LINE_SIZE
25	select ARCH_HAS_DEBUG_VM_PGTABLE
26	select HAVE_RELIABLE_STACKTRACE
27	select RTC_CLASS
28	select RTC_DRV_GENERIC
29	select INIT_ALL_POSSIBLE
30	select BUG
31	select HAVE_KERNEL_UNCOMPRESSED
32	select HAVE_PCI
33	select HAVE_PERF_EVENTS
34	select HAVE_KERNEL_BZIP2
35	select HAVE_KERNEL_GZIP
36	select HAVE_KERNEL_LZ4
37	select HAVE_KERNEL_LZMA
38	select HAVE_KERNEL_LZO
39	select HAVE_KERNEL_XZ
40	select GENERIC_ATOMIC64 if !64BIT
41	select GENERIC_IRQ_PROBE
42	select GENERIC_PCI_IOMAP
43	select GENERIC_IOREMAP
44	select ARCH_HAVE_NMI_SAFE_CMPXCHG
45	select GENERIC_SMP_IDLE_THREAD
46	select GENERIC_ARCH_TOPOLOGY if SMP
47	select GENERIC_CPU_DEVICES if !SMP
48	select GENERIC_LIB_DEVMEM_IS_ALLOWED
49	select SYSCTL_ARCH_UNALIGN_ALLOW
50	select SYSCTL_ARCH_UNALIGN_NO_WARN
51	select SYSCTL_EXCEPTION_TRACE
52	select HAVE_MOD_ARCH_SPECIFIC
53	select MODULES_USE_ELF_RELA
54	select CLONE_BACKWARDS
55	select TTY # Needed for pdc_cons.c
56	select HAS_IOPORT if PCI || EISA
57	select HAVE_DEBUG_STACKOVERFLOW
58	select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT
59	select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT
60	select HAVE_ARCH_MMAP_RND_BITS
61	select HAVE_ARCH_AUDITSYSCALL
62	select HAVE_ARCH_HASH
63	select HAVE_ARCH_JUMP_LABEL
64	select HAVE_ARCH_JUMP_LABEL_RELATIVE
65	select HAVE_ARCH_KFENCE
66	select HAVE_ARCH_SECCOMP_FILTER
67	select HAVE_ARCH_TRACEHOOK
68	select HAVE_EBPF_JIT
69	select ARCH_WANT_DEFAULT_BPF_JIT
70	select HAVE_REGS_AND_STACK_ACCESS_API
71	select HOTPLUG_CORE_SYNC_DEAD if HOTPLUG_CPU
72	select GENERIC_SCHED_CLOCK
73	select GENERIC_IRQ_MIGRATION if SMP
74	select HAVE_UNSTABLE_SCHED_CLOCK if SMP
75	select GENERIC_CLOCKEVENTS
76	select CPU_NO_EFFICIENT_FFS
77	select THREAD_INFO_IN_TASK
78	select NEED_DMA_MAP_STATE
79	select NEED_SG_DMA_LENGTH
80	select HAVE_ARCH_KGDB
81	select HAVE_KPROBES
82	select HAVE_KRETPROBES
83	select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1)
84	select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE
85	select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE
86	select HAVE_KPROBES_ON_FTRACE
87	select HAVE_DYNAMIC_FTRACE_WITH_REGS
88	select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS
89	select TRACE_IRQFLAGS_SUPPORT
90	select HAVE_FUNCTION_DESCRIPTORS if 64BIT
91	select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
92
93	help
94	  The PA-RISC microprocessor is designed by Hewlett-Packard and used
95	  in many of their workstations & servers (HP9000 700 and 800 series,
96	  and later HP3000 series).  The PA-RISC Linux project home page is
97	  at <https://parisc.wiki.kernel.org>.
98
99config CPU_BIG_ENDIAN
100	def_bool y
101
102config MMU
103	def_bool y
104
105config STACK_GROWSUP
106	def_bool y
107
108config GENERIC_LOCKBREAK
109	bool
110	default y
111	depends on SMP && PREEMPTION
112
113config ARCH_HAS_ILOG2_U32
114	bool
115	default n
116
117config ARCH_HAS_ILOG2_U64
118	bool
119	default n
120
121config GENERIC_BUG
122	def_bool y
123	depends on BUG
124	select GENERIC_BUG_RELATIVE_POINTERS if 64BIT
125
126config GENERIC_BUG_RELATIVE_POINTERS
127	bool
128
129config GENERIC_HWEIGHT
130	bool
131	default y
132
133config GENERIC_CALIBRATE_DELAY
134	bool
135	default y
136
137config TIME_LOW_RES
138	bool
139	depends on SMP
140	default y
141
142config ARCH_MMAP_RND_BITS_MIN
143	default 18 if 64BIT
144	default 8
145
146config ARCH_MMAP_RND_COMPAT_BITS_MIN
147	default 8
148
149config ARCH_MMAP_RND_BITS_MAX
150	default 18 if 64BIT
151	default 13
152
153config ARCH_MMAP_RND_COMPAT_BITS_MAX
154	default 13
155
156# unless you want to implement ACPI on PA-RISC ... ;-)
157config PM
158	bool
159
160config STACKTRACE_SUPPORT
161	def_bool y
162
163config LOCKDEP_SUPPORT
164	bool
165	default y
166
167config ISA_DMA_API
168	bool
169
170config ARCH_MAY_HAVE_PC_FDC
171	bool
172	depends on BROKEN
173	default y
174
175config PGTABLE_LEVELS
176	int
177	default 3 if 64BIT && PARISC_PAGE_SIZE_4KB
178	default 2
179
180menu "Processor type and features"
181
182choice
183	prompt "Processor type"
184	default PA7000 if "$(ARCH)" = "parisc"
185
186config PA7000
187	bool "PA7000/PA7100" if "$(ARCH)" = "parisc"
188	help
189	  This is the processor type of your CPU.  This information is
190	  used for optimizing purposes.  In order to compile a kernel
191	  that can run on all 32-bit PA CPUs (albeit not optimally fast),
192	  you can specify "PA7000" here.
193
194	  Specifying "PA8000" here will allow you to select a 64-bit kernel
195	  which is required on some machines.
196
197config PA7100LC
198	bool "PA7100LC" if "$(ARCH)" = "parisc"
199	help
200	  Select this option for the PCX-L processor, as used in the
201	  712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748,
202	  D200, D210, D300, D310 and E-class
203
204config PA7200
205	bool "PA7200" if "$(ARCH)" = "parisc"
206	help
207	  Select this option for the PCX-T' processor, as used in the
208	  C100, C110, J100, J110, J210XC, D250, D260, D350, D360,
209	  K100, K200, K210, K220, K400, K410 and K420
210
211config PA7300LC
212	bool "PA7300LC" if "$(ARCH)" = "parisc"
213	help
214	  Select this option for the PCX-L2 processor, as used in the
215	  744, A180, B132L, B160L, B180L, C132L, C160L, C180L,
216	  D220, D230, D320 and D330.
217
218config PA8X00
219	bool "PA8000 and up"
220	help
221	  Select this option for PCX-U to PCX-W2 processors.
222
223endchoice
224
225# Define implied options from the CPU selection here
226
227config PA20
228	def_bool y
229	depends on PA8X00
230
231config PA11
232	def_bool y
233	depends on PA7000 || PA7100LC || PA7200 || PA7300LC
234	select ARCH_HAS_SYNC_DMA_FOR_CPU
235	select ARCH_HAS_SYNC_DMA_FOR_DEVICE
236
237config PREFETCH
238	def_bool y
239	depends on PA8X00 || PA7200
240
241config PARISC_HUGE_KERNEL
242	def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST
243
244config MLONGCALLS
245	bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL
246	depends on PA8X00
247	default PARISC_HUGE_KERNEL
248	help
249	  If you configure the kernel to include many drivers built-in instead
250	  as modules, the kernel executable may become too big, so that the
251	  linker will not be able to resolve some long branches and fails to link
252	  your vmlinux kernel. In that case enabling this option will help you
253	  to overcome this limit by using the -mlong-calls compiler option.
254
255	  Usually you want to say N here, unless you e.g. want to build
256	  a kernel which includes all necessary drivers built-in and which can
257	  be used for TFTP booting without the need to have an initrd ramdisk.
258
259	  Enabling this option will probably slow down your kernel.
260
261config 64BIT
262	bool "64-bit kernel" if "$(ARCH)" = "parisc"
263	depends on PA8X00
264	default "$(ARCH)" = "parisc64"
265	help
266	  Enable this if you want to support 64bit kernel on PA-RISC platform.
267
268	  At the moment, only people willing to use more than 2GB of RAM,
269	  or having a 64bit-only capable PA-RISC machine should say Y here.
270
271	  Since there is no 64bit userland on PA-RISC, there is no point to
272	  enable this option otherwise. The 64bit kernel is significantly bigger
273	  and slower than the 32bit one.
274
275choice
276	prompt "Kernel page size"
277	default PARISC_PAGE_SIZE_4KB
278
279config PARISC_PAGE_SIZE_4KB
280	bool "4KB"
281	select HAVE_PAGE_SIZE_4KB
282	help
283	  This lets you select the page size of the kernel.  For best
284	  performance, a page size of 16KB is recommended.  For best
285	  compatibility with 32bit applications, a page size of 4KB should be
286	  selected (the vast majority of 32bit binaries work perfectly fine
287	  with a larger page size).
288
289	  4KB                For best 32bit compatibility
290	  16KB               For best performance
291	  64KB               For best performance, might give more overhead.
292
293	  If you don't know what to do, choose 4KB.
294
295config PARISC_PAGE_SIZE_16KB
296	bool "16KB"
297	select HAVE_PAGE_SIZE_16KB
298	depends on PA8X00 && BROKEN && !KFENCE
299
300config PARISC_PAGE_SIZE_64KB
301	bool "64KB"
302	select HAVE_PAGE_SIZE_64KB
303	depends on PA8X00 && BROKEN && !KFENCE
304
305endchoice
306
307config SMP
308	bool "Symmetric multi-processing support"
309	help
310	  This enables support for systems with more than one CPU. If you have
311	  a system with only one CPU, say N. If you have a system with more
312	  than one CPU, say Y.
313
314	  If you say N here, the kernel will run on uni- and multiprocessor
315	  machines, but will use only one CPU of a multiprocessor machine.
316	  On a uniprocessor machine, the kernel will run faster if you say N.
317
318	  See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
319	  available at <https://www.tldp.org/docs.html#howto>.
320
321	  If you don't know what to do here, say N.
322
323config SCHED_MC
324	bool "Multi-core scheduler support"
325	depends on GENERIC_ARCH_TOPOLOGY && PA8X00
326	help
327	  Multi-core scheduler support improves the CPU scheduler's decision
328	  making when dealing with multi-core CPU chips at a cost of slightly
329	  increased overhead in some places. If unsure say N here.
330
331config IRQSTACKS
332	bool "Use separate kernel stacks when processing interrupts"
333	default y
334	help
335	  If you say Y here the kernel will use separate kernel stacks
336	  for handling hard and soft interrupts.  This can help avoid
337	  overflowing the process kernel stacks.
338
339config HOTPLUG_CPU
340	bool
341	default y if SMP
342
343config ARCH_SELECT_MEMORY_MODEL
344	def_bool y
345	depends on 64BIT
346
347config ARCH_SPARSEMEM_ENABLE
348	def_bool y
349	depends on 64BIT
350
351config ARCH_FLATMEM_ENABLE
352	def_bool y
353
354config ARCH_SPARSEMEM_DEFAULT
355	def_bool y
356	depends on ARCH_SPARSEMEM_ENABLE
357
358source "kernel/Kconfig.hz"
359
360config COMPAT
361	def_bool y
362	depends on 64BIT
363
364config AUDIT_ARCH
365	def_bool y
366
367config NR_CPUS
368	int "Maximum number of CPUs (2-32)"
369	range 2 32
370	depends on SMP
371	default "8" if 64BIT
372	default "16"
373
374endmenu
375
376config ARCH_SUPPORTS_KEXEC
377	def_bool y
378
379config ARCH_SUPPORTS_KEXEC_FILE
380	def_bool y
381
382config ARCH_SELECTS_KEXEC_FILE
383	def_bool y
384	depends on KEXEC_FILE
385	select KEXEC_ELF
386
387source "drivers/parisc/Kconfig"
388