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