xref: /openbmc/linux/arch/parisc/Kconfig (revision c005e2f62f8421b13b9a31adb9db7281f1a19e68)
1 # SPDX-License-Identifier: GPL-2.0
2 config 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_SPLIT_ARG64 if !64BIT
18 	select ARCH_SUPPORTS_HUGETLBFS if PA20
19 	select ARCH_SUPPORTS_MEMORY_FAILURE
20 	select ARCH_STACKWALK
21 	select ARCH_HAS_CACHE_LINE_SIZE
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_PCI
30 	select HAVE_PERF_EVENTS
31 	select HAVE_KERNEL_BZIP2
32 	select HAVE_KERNEL_GZIP
33 	select HAVE_KERNEL_LZ4
34 	select HAVE_KERNEL_LZMA
35 	select HAVE_KERNEL_LZO
36 	select HAVE_KERNEL_XZ
37 	select GENERIC_ATOMIC64 if !64BIT
38 	select GENERIC_IRQ_PROBE
39 	select GENERIC_PCI_IOMAP
40 	select GENERIC_IOREMAP
41 	select ARCH_HAVE_NMI_SAFE_CMPXCHG
42 	select GENERIC_SMP_IDLE_THREAD
43 	select GENERIC_ARCH_TOPOLOGY if SMP
44 	select GENERIC_CPU_DEVICES if !SMP
45 	select GENERIC_LIB_DEVMEM_IS_ALLOWED
46 	select SYSCTL_ARCH_UNALIGN_ALLOW
47 	select SYSCTL_EXCEPTION_TRACE
48 	select HAVE_MOD_ARCH_SPECIFIC
49 	select MODULES_USE_ELF_RELA
50 	select CLONE_BACKWARDS
51 	select TTY # Needed for pdc_cons.c
52 	select HAS_IOPORT if PCI || EISA
53 	select HAVE_DEBUG_STACKOVERFLOW
54 	select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT
55 	select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT
56 	select HAVE_ARCH_MMAP_RND_BITS
57 	select HAVE_ARCH_AUDITSYSCALL
58 	select HAVE_ARCH_HASH
59 	select HAVE_ARCH_JUMP_LABEL
60 	select HAVE_ARCH_JUMP_LABEL_RELATIVE
61 	select HAVE_ARCH_KFENCE
62 	select HAVE_ARCH_SECCOMP_FILTER
63 	select HAVE_ARCH_TRACEHOOK
64 	select HAVE_EBPF_JIT
65 	select ARCH_WANT_DEFAULT_BPF_JIT
66 	select HAVE_REGS_AND_STACK_ACCESS_API
67 	select HOTPLUG_CORE_SYNC_DEAD if HOTPLUG_CPU
68 	select GENERIC_SCHED_CLOCK
69 	select GENERIC_IRQ_MIGRATION if SMP
70 	select HAVE_UNSTABLE_SCHED_CLOCK if SMP
71 	select LEGACY_TIMER_TICK
72 	select CPU_NO_EFFICIENT_FFS
73 	select THREAD_INFO_IN_TASK
74 	select NEED_DMA_MAP_STATE
75 	select NEED_SG_DMA_LENGTH
76 	select HAVE_ARCH_KGDB
77 	select HAVE_KPROBES
78 	select HAVE_KRETPROBES
79 	select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1)
80 	select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE
81 	select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE
82 	select HAVE_KPROBES_ON_FTRACE
83 	select HAVE_DYNAMIC_FTRACE_WITH_REGS
84 	select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS
85 	select TRACE_IRQFLAGS_SUPPORT
86 	select HAVE_FUNCTION_DESCRIPTORS if 64BIT
87 	select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
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 
95 config CPU_BIG_ENDIAN
96 	def_bool y
97 
98 config MMU
99 	def_bool y
100 
101 config STACK_GROWSUP
102 	def_bool y
103 
104 config GENERIC_LOCKBREAK
105 	bool
106 	default y
107 	depends on SMP && PREEMPTION
108 
109 config ARCH_HAS_ILOG2_U32
110 	bool
111 	default n
112 
113 config ARCH_HAS_ILOG2_U64
114 	bool
115 	default n
116 
117 config GENERIC_BUG
118 	def_bool y
119 	depends on BUG
120 	select GENERIC_BUG_RELATIVE_POINTERS if 64BIT
121 
122 config GENERIC_BUG_RELATIVE_POINTERS
123 	bool
124 
125 config GENERIC_HWEIGHT
126 	bool
127 	default y
128 
129 config GENERIC_CALIBRATE_DELAY
130 	bool
131 	default y
132 
133 config TIME_LOW_RES
134 	bool
135 	depends on SMP
136 	default y
137 
138 config ARCH_MMAP_RND_BITS_MIN
139 	default 18 if 64BIT
140 	default 8
141 
142 config ARCH_MMAP_RND_COMPAT_BITS_MIN
143 	default 8
144 
145 config ARCH_MMAP_RND_BITS_MAX
146 	default 18 if 64BIT
147 	default 13
148 
149 config ARCH_MMAP_RND_COMPAT_BITS_MAX
150 	default 13
151 
152 # unless you want to implement ACPI on PA-RISC ... ;-)
153 config PM
154 	bool
155 
156 config STACKTRACE_SUPPORT
157 	def_bool y
158 
159 config LOCKDEP_SUPPORT
160 	bool
161 	default y
162 
163 config ISA_DMA_API
164 	bool
165 
166 config ARCH_MAY_HAVE_PC_FDC
167 	bool
168 	depends on BROKEN
169 	default y
170 
171 config PGTABLE_LEVELS
172 	int
173 	default 3 if 64BIT && PARISC_PAGE_SIZE_4KB
174 	default 2
175 
176 menu "Processor type and features"
177 
178 choice
179 	prompt "Processor type"
180 	default PA7000 if "$(ARCH)" = "parisc"
181 
182 config PA7000
183 	bool "PA7000/PA7100" if "$(ARCH)" = "parisc"
184 	help
185 	  This is the processor type of your CPU.  This information is
186 	  used for optimizing purposes.  In order to compile a kernel
187 	  that can run on all 32-bit PA CPUs (albeit not optimally fast),
188 	  you can specify "PA7000" here.
189 
190 	  Specifying "PA8000" here will allow you to select a 64-bit kernel
191 	  which is required on some machines.
192 
193 config PA7100LC
194 	bool "PA7100LC" if "$(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 
200 config PA7200
201 	bool "PA7200" if "$(ARCH)" = "parisc"
202 	help
203 	  Select this option for the PCX-T' processor, as used in the
204 	  C100, C110, J100, J110, J210XC, D250, D260, D350, D360,
205 	  K100, K200, K210, K220, K400, K410 and K420
206 
207 config PA7300LC
208 	bool "PA7300LC" if "$(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 
214 config PA8X00
215 	bool "PA8000 and up"
216 	help
217 	  Select this option for PCX-U to PCX-W2 processors.
218 
219 endchoice
220 
221 # Define implied options from the CPU selection here
222 
223 config PA20
224 	def_bool y
225 	depends on PA8X00
226 
227 config 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 
233 config PREFETCH
234 	def_bool y
235 	depends on PA8X00 || PA7200
236 
237 config PARISC_HUGE_KERNEL
238 	def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST
239 
240 config 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 
257 config 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 
271 choice
272 	prompt "Kernel page size"
273 	default PARISC_PAGE_SIZE_4KB
274 
275 config PARISC_PAGE_SIZE_4KB
276 	bool "4KB"
277 	help
278 	  This lets you select the page size of the kernel.  For best
279 	  performance, a page size of 16KB is recommended.  For best
280 	  compatibility with 32bit applications, a page size of 4KB should be
281 	  selected (the vast majority of 32bit binaries work perfectly fine
282 	  with a larger page size).
283 
284 	  4KB                For best 32bit compatibility
285 	  16KB               For best performance
286 	  64KB               For best performance, might give more overhead.
287 
288 	  If you don't know what to do, choose 4KB.
289 
290 config PARISC_PAGE_SIZE_16KB
291 	bool "16KB"
292 	depends on PA8X00 && BROKEN && !KFENCE
293 
294 config PARISC_PAGE_SIZE_64KB
295 	bool "64KB"
296 	depends on PA8X00 && BROKEN && !KFENCE
297 
298 endchoice
299 
300 config SMP
301 	bool "Symmetric multi-processing support"
302 	help
303 	  This enables support for systems with more than one CPU. If you have
304 	  a system with only one CPU, say N. If you have a system with more
305 	  than one CPU, say Y.
306 
307 	  If you say N here, the kernel will run on uni- and multiprocessor
308 	  machines, but will use only one CPU of a multiprocessor machine.
309 	  On a uniprocessor machine, the kernel will run faster if you say N.
310 
311 	  See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
312 	  available at <https://www.tldp.org/docs.html#howto>.
313 
314 	  If you don't know what to do here, say N.
315 
316 config SCHED_MC
317 	bool "Multi-core scheduler support"
318 	depends on GENERIC_ARCH_TOPOLOGY && PA8X00
319 	help
320 	  Multi-core scheduler support improves the CPU scheduler's decision
321 	  making when dealing with multi-core CPU chips at a cost of slightly
322 	  increased overhead in some places. If unsure say N here.
323 
324 config IRQSTACKS
325 	bool "Use separate kernel stacks when processing interrupts"
326 	default y
327 	help
328 	  If you say Y here the kernel will use separate kernel stacks
329 	  for handling hard and soft interrupts.  This can help avoid
330 	  overflowing the process kernel stacks.
331 
332 config HOTPLUG_CPU
333 	bool
334 	default y if SMP
335 
336 config ARCH_SELECT_MEMORY_MODEL
337 	def_bool y
338 	depends on 64BIT
339 
340 config ARCH_SPARSEMEM_ENABLE
341 	def_bool y
342 	depends on 64BIT
343 
344 config ARCH_FLATMEM_ENABLE
345 	def_bool y
346 
347 config ARCH_SPARSEMEM_DEFAULT
348 	def_bool y
349 	depends on ARCH_SPARSEMEM_ENABLE
350 
351 source "kernel/Kconfig.hz"
352 
353 config COMPAT
354 	def_bool y
355 	depends on 64BIT
356 
357 config AUDIT_ARCH
358 	def_bool y
359 
360 config NR_CPUS
361 	int "Maximum number of CPUs (2-32)"
362 	range 2 32
363 	depends on SMP
364 	default "8" if 64BIT
365 	default "16"
366 
367 endmenu
368 
369 config ARCH_SUPPORTS_KEXEC
370 	def_bool y
371 
372 config ARCH_SUPPORTS_KEXEC_FILE
373 	def_bool y
374 
375 config ARCH_SELECTS_KEXEC_FILE
376 	def_bool y
377 	depends on KEXEC_FILE
378 	select KEXEC_ELF
379 
380 source "drivers/parisc/Kconfig"
381