1
2config PARISC
3 def_bool y
4 select ARCH_32BIT_OFF_T if !64BIT
5 select ARCH_MIGHT_HAVE_PC_PARPORT
6 select HAVE_FUNCTION_TRACER
7 select HAVE_FUNCTION_GRAPH_TRACER
8 select HAVE_SYSCALL_TRACEPOINTS
9 select ARCH_WANT_FRAME_POINTERS
10 select ARCH_HAS_ELF_RANDOMIZE
11 select ARCH_HAS_STRICT_KERNEL_RWX
12 select ARCH_HAS_UBSAN_SANITIZE_ALL
13 select ARCH_NO_SG_CHAIN
14 select ARCH_SUPPORTS_HUGETLBFS if PA20
15 select ARCH_SUPPORTS_MEMORY_FAILURE
16 select DMA_OPS
17 select RTC_CLASS
18 select RTC_DRV_GENERIC
19 select INIT_ALL_POSSIBLE
20 select BUG
21 select BUILDTIME_TABLE_SORT
22 select HAVE_PCI
23 select HAVE_PERF_EVENTS
24 select HAVE_KERNEL_BZIP2
25 select HAVE_KERNEL_GZIP
26 select HAVE_KERNEL_LZ4
27 select HAVE_KERNEL_LZMA
28 select HAVE_KERNEL_LZO
29 select HAVE_KERNEL_XZ
30 select GENERIC_ATOMIC64 if !64BIT
31 select GENERIC_IRQ_PROBE
32 select GENERIC_PCI_IOMAP
33 select ARCH_HAVE_NMI_SAFE_CMPXCHG
34 select GENERIC_SMP_IDLE_THREAD
35 select GENERIC_CPU_DEVICES
36 select GENERIC_STRNCPY_FROM_USER
37 select GENERIC_LIB_DEVMEM_IS_ALLOWED
38 select SYSCTL_ARCH_UNALIGN_ALLOW
39 select SYSCTL_EXCEPTION_TRACE
40 select HAVE_MOD_ARCH_SPECIFIC
41 select VIRT_TO_BUS
42 select MODULES_USE_ELF_RELA
43 select CLONE_BACKWARDS
44 select TTY
45 select HAVE_DEBUG_STACKOVERFLOW
46 select HAVE_ARCH_AUDITSYSCALL
47 select HAVE_ARCH_HASH
48 select HAVE_ARCH_JUMP_LABEL
49 select HAVE_ARCH_JUMP_LABEL_RELATIVE
50 select HAVE_ARCH_SECCOMP_FILTER
51 select HAVE_ARCH_TRACEHOOK
52 select HAVE_REGS_AND_STACK_ACCESS_API
53 select GENERIC_SCHED_CLOCK
54 select HAVE_UNSTABLE_SCHED_CLOCK if SMP
55 select LEGACY_TIMER_TICK
56 select CPU_NO_EFFICIENT_FFS
57 select NEED_DMA_MAP_STATE
58 select NEED_SG_DMA_LENGTH
59 select HAVE_ARCH_KGDB
60 select HAVE_KPROBES
61 select HAVE_KRETPROBES
62 select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1)
63 select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE
64 select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if DYNAMIC_FTRACE
65 select HAVE_KPROBES_ON_FTRACE
66 select HAVE_DYNAMIC_FTRACE_WITH_REGS
67 select HAVE_SOFTIRQ_ON_OWN_STACK if IRQSTACKS
68 select SET_FS
69
70 help
71 The PA-RISC microprocessor is designed by Hewlett-Packard and used
72 in many of their workstations & servers (HP9000 700 and 800 series,
73 and later HP3000 series). The PA-RISC Linux project home page is
74 at <https://parisc.wiki.kernel.org>.
75
76config CPU_BIG_ENDIAN
77 def_bool y
78
79config MMU
80 def_bool y
81
82config STACK_GROWSUP
83 def_bool y
84
85config ARCH_DEFCONFIG
86 string
87 default "arch/parisc/configs/generic-32bit_defconfig" if !64BIT
88 default "arch/parisc/configs/generic-64bit_defconfig" if 64BIT
89
90config GENERIC_LOCKBREAK
91 bool
92 default y
93 depends on SMP && PREEMPTION
94
95config ARCH_HAS_ILOG2_U32
96 bool
97 default n
98
99config ARCH_HAS_ILOG2_U64
100 bool
101 default n
102
103config GENERIC_BUG
104 bool
105 default y
106 depends on BUG
107
108config GENERIC_HWEIGHT
109 bool
110 default y
111
112config GENERIC_CALIBRATE_DELAY
113 bool
114 default y
115
116config TIME_LOW_RES
117 bool
118 depends on SMP
119 default y
120
121
122config PM
123 bool
124
125config STACKTRACE_SUPPORT
126 def_bool y
127
128config ISA_DMA_API
129 bool
130
131config ARCH_MAY_HAVE_PC_FDC
132 bool
133 depends on BROKEN
134 default y
135
136config PGTABLE_LEVELS
137 int
138 default 3 if 64BIT && PARISC_PAGE_SIZE_4KB
139 default 2
140
141menu "Processor type and features"
142
143choice
144 prompt "Processor type"
145 default PA7000
146
147config PA7000
148 bool "PA7000/PA7100"
149 help
150 This is the processor type of your CPU. This information is
151 used for optimizing purposes. In order to compile a kernel
152 that can run on all 32-bit PA CPUs (albeit not optimally fast),
153 you can specify "PA7000" here.
154
155 Specifying "PA8000" here will allow you to select a 64-bit kernel
156 which is required on some machines.
157
158config PA7100LC
159 bool "PA7100LC"
160 help
161 Select this option for the PCX-L processor, as used in the
162 712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748,
163 D200, D210, D300, D310 and E-class
164
165config PA7200
166 bool "PA7200"
167 help
168 Select this option for the PCX-T' processor, as used in the
169 C100, C110, J100, J110, J210XC, D250, D260, D350, D360,
170 K100, K200, K210, K220, K400, K410 and K420
171
172config PA7300LC
173 bool "PA7300LC"
174 help
175 Select this option for the PCX-L2 processor, as used in the
176 744, A180, B132L, B160L, B180L, C132L, C160L, C180L,
177 D220, D230, D320 and D330.
178
179config PA8X00
180 bool "PA8000 and up"
181 help
182 Select this option for PCX-U to PCX-W2 processors.
183
184endchoice
185
186
187
188config PA20
189 def_bool y
190 depends on PA8X00
191
192config PA11
193 def_bool y
194 depends on PA7000 || PA7100LC || PA7200 || PA7300LC
195 select ARCH_HAS_SYNC_DMA_FOR_CPU
196 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
197
198config PREFETCH
199 def_bool y
200 depends on PA8X00 || PA7200
201
202config PARISC_HUGE_KERNEL
203 def_bool y if !MODULES || UBSAN || FTRACE || COMPILE_TEST
204
205config MLONGCALLS
206 def_bool y if PARISC_HUGE_KERNEL
207 bool "Enable the -mlong-calls compiler option for big kernels" if !PARISC_HUGE_KERNEL
208 depends on PA8X00
209 help
210 If you configure the kernel to include many drivers built-in instead
211 as modules, the kernel executable may become too big, so that the
212 linker will not be able to resolve some long branches and fails to link
213 your vmlinux kernel. In that case enabling this option will help you
214 to overcome this limit by using the -mlong-calls compiler option.
215
216 Usually you want to say N here, unless you e.g. want to build
217 a kernel which includes all necessary drivers built-in and which can
218 be used for TFTP booting without the need to have an initrd ramdisk.
219
220 Enabling this option will probably slow down your kernel.
221
222config 64BIT
223 bool "64-bit kernel"
224 depends on PA8X00
225 help
226 Enable this if you want to support 64bit kernel on PA-RISC platform.
227
228 At the moment, only people willing to use more than 2GB of RAM,
229 or having a 64bit-only capable PA-RISC machine should say Y here.
230
231 Since there is no 64bit userland on PA-RISC, there is no point to
232 enable this option otherwise. The 64bit kernel is significantly bigger
233 and slower than the 32bit one.
234
235choice
236 prompt "Kernel page size"
237 default PARISC_PAGE_SIZE_4KB
238
239config PARISC_PAGE_SIZE_4KB
240 bool "4KB"
241 help
242 This lets you select the page size of the kernel. For best
243 performance, a page size of 16KB is recommended. For best
244 compatibility with 32bit applications, a page size of 4KB should be
245 selected (the vast majority of 32bit binaries work perfectly fine
246 with a larger page size).
247
248 4KB For best 32bit compatibility
249 16KB For best performance
250 64KB For best performance, might give more overhead.
251
252 If you don't know what to do, choose 4KB.
253
254config PARISC_PAGE_SIZE_16KB
255 bool "16KB"
256 depends on PA8X00 && BROKEN
257
258config PARISC_PAGE_SIZE_64KB
259 bool "64KB"
260 depends on PA8X00 && BROKEN
261
262endchoice
263
264config PARISC_SELF_EXTRACT
265 bool "Build kernel as self-extracting executable"
266 default y
267 help
268 Say Y if you want to build the parisc kernel as a kind of
269 self-extracting executable.
270
271 If you say N here, the kernel will be compressed with gzip
272 which can be loaded by the palo bootloader directly too.
273
274 If you don't know what to do here, say Y.
275
276config SMP
277 bool "Symmetric multi-processing support"
278 help
279 This enables support for systems with more than one CPU. If you have
280 a system with only one CPU, say N. If you have a system with more
281 than one CPU, say Y.
282
283 If you say N here, the kernel will run on uni- and multiprocessor
284 machines, but will use only one CPU of a multiprocessor machine.
285 On a uniprocessor machine, the kernel will run faster if you say N.
286
287 See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
288 available at <https://www.tldp.org/docs.html#howto>.
289
290 If you don't know what to do here, say N.
291
292config PARISC_CPU_TOPOLOGY
293 bool "Support cpu topology definition"
294 depends on SMP
295 default y
296 help
297 Support PARISC cpu topology definition.
298
299config SCHED_MC
300 bool "Multi-core scheduler support"
301 depends on PARISC_CPU_TOPOLOGY && PA8X00
302 help
303 Multi-core scheduler support improves the CPU scheduler's decision
304 making when dealing with multi-core CPU chips at a cost of slightly
305 increased overhead in some places. If unsure say N here.
306
307config IRQSTACKS
308 bool "Use separate kernel stacks when processing interrupts"
309 default y
310 help
311 If you say Y here the kernel will use separate kernel stacks
312 for handling hard and soft interrupts. This can help avoid
313 overflowing the process kernel stacks.
314
315config TLB_PTLOCK
316 bool "Use page table locks in TLB fault handler"
317 depends on SMP
318 default n
319 help
320 Select this option to enable page table locking in the TLB
321 fault handler. This ensures that page table entries are
322 updated consistently on SMP machines at the expense of some
323 loss in performance.
324
325config HOTPLUG_CPU
326 bool
327 default y if SMP
328
329config ARCH_SELECT_MEMORY_MODEL
330 def_bool y
331 depends on 64BIT
332
333config ARCH_SPARSEMEM_ENABLE
334 def_bool y
335 depends on 64BIT
336
337config ARCH_FLATMEM_ENABLE
338 def_bool y
339
340config ARCH_SPARSEMEM_DEFAULT
341 def_bool y
342 depends on ARCH_SPARSEMEM_ENABLE
343
344source "kernel/Kconfig.hz"
345
346config COMPAT
347 def_bool y
348 depends on 64BIT
349
350config SYSVIPC_COMPAT
351 def_bool y
352 depends on COMPAT && SYSVIPC
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 "4"
362
363config KEXEC
364 bool "Kexec system call"
365 select KEXEC_CORE
366 help
367 kexec is a system call that implements the ability to shutdown your
368 current kernel, and to start another kernel. It is like a reboot
369 but it is independent of the system firmware. And like a reboot
370 you can start any kernel with it, not just Linux.
371
372 It is an ongoing process to be certain the hardware in a machine
373 shutdown, so do not be surprised if this code does not
374 initially work for you.
375
376config KEXEC_FILE
377 bool "kexec file based system call"
378 select KEXEC_CORE
379 select KEXEC_ELF
380 help
381 This enables the kexec_file_load() System call. This is
382 file based and takes file descriptors as system call argument
383 for kernel and initramfs as opposed to list of segments as
384 accepted by previous system call.
385
386endmenu
387
388source "drivers/firmware/Kconfig"
389
390source "drivers/parisc/Kconfig"
391
