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