Merge branch 'xen/dev-evtchn' into upstream/evtchn
[deliverable/linux.git] / arch / mips / Kconfig
1 config MIPS
2 bool
3 default y
4 select HAVE_GENERIC_DMA_COHERENT
5 select HAVE_IDE
6 select HAVE_OPROFILE
7 select HAVE_PERF_EVENTS
8 select PERF_USE_VMALLOC
9 select HAVE_ARCH_KGDB
10 select HAVE_FUNCTION_TRACER
11 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
12 select HAVE_DYNAMIC_FTRACE
13 select HAVE_FTRACE_MCOUNT_RECORD
14 select HAVE_C_RECORDMCOUNT
15 select HAVE_FUNCTION_GRAPH_TRACER
16 select HAVE_KPROBES
17 select HAVE_KRETPROBES
18 select RTC_LIB if !MACH_LOONGSON
19 select GENERIC_ATOMIC64 if !64BIT
20 select HAVE_DMA_ATTRS
21 select HAVE_DMA_API_DEBUG
22
23 menu "Machine selection"
24
25 config ZONE_DMA
26 bool
27
28 choice
29 prompt "System type"
30 default SGI_IP22
31
32 config MIPS_ALCHEMY
33 bool "Alchemy processor based machines"
34 select 64BIT_PHYS_ADDR
35 select CEVT_R4K_LIB
36 select CSRC_R4K_LIB
37 select IRQ_CPU
38 select SYS_HAS_CPU_MIPS32_R1
39 select SYS_SUPPORTS_32BIT_KERNEL
40 select SYS_SUPPORTS_APM_EMULATION
41 select GENERIC_GPIO
42 select ARCH_WANT_OPTIONAL_GPIOLIB
43 select SYS_SUPPORTS_ZBOOT
44
45 config AR7
46 bool "Texas Instruments AR7"
47 select BOOT_ELF32
48 select DMA_NONCOHERENT
49 select CEVT_R4K
50 select CSRC_R4K
51 select IRQ_CPU
52 select NO_EXCEPT_FILL
53 select SWAP_IO_SPACE
54 select SYS_HAS_CPU_MIPS32_R1
55 select SYS_HAS_EARLY_PRINTK
56 select SYS_SUPPORTS_32BIT_KERNEL
57 select SYS_SUPPORTS_LITTLE_ENDIAN
58 select SYS_SUPPORTS_ZBOOT_UART16550
59 select ARCH_REQUIRE_GPIOLIB
60 select GCD
61 select VLYNQ
62 help
63 Support for the Texas Instruments AR7 System-on-a-Chip
64 family: TNETD7100, 7200 and 7300.
65
66 config BCM47XX
67 bool "Broadcom BCM47XX based boards"
68 select CEVT_R4K
69 select CSRC_R4K
70 select DMA_NONCOHERENT
71 select HW_HAS_PCI
72 select IRQ_CPU
73 select SYS_HAS_CPU_MIPS32_R1
74 select SYS_SUPPORTS_32BIT_KERNEL
75 select SYS_SUPPORTS_LITTLE_ENDIAN
76 select SSB
77 select SSB_DRIVER_MIPS
78 select SSB_DRIVER_EXTIF
79 select SSB_EMBEDDED
80 select SSB_B43_PCI_BRIDGE if PCI
81 select SSB_PCICORE_HOSTMODE if PCI
82 select GENERIC_GPIO
83 select SYS_HAS_EARLY_PRINTK
84 select CFE
85 help
86 Support for BCM47XX based boards
87
88 config BCM63XX
89 bool "Broadcom BCM63XX based boards"
90 select CEVT_R4K
91 select CSRC_R4K
92 select DMA_NONCOHERENT
93 select IRQ_CPU
94 select SYS_HAS_CPU_MIPS32_R1
95 select SYS_SUPPORTS_32BIT_KERNEL
96 select SYS_SUPPORTS_BIG_ENDIAN
97 select SYS_HAS_EARLY_PRINTK
98 select SWAP_IO_SPACE
99 select ARCH_REQUIRE_GPIOLIB
100 help
101 Support for BCM63XX based boards
102
103 config MIPS_COBALT
104 bool "Cobalt Server"
105 select CEVT_R4K
106 select CSRC_R4K
107 select CEVT_GT641XX
108 select DMA_NONCOHERENT
109 select HW_HAS_PCI
110 select I8253
111 select I8259
112 select IRQ_CPU
113 select IRQ_GT641XX
114 select PCI_GT64XXX_PCI0
115 select PCI
116 select SYS_HAS_CPU_NEVADA
117 select SYS_HAS_EARLY_PRINTK
118 select SYS_SUPPORTS_32BIT_KERNEL
119 select SYS_SUPPORTS_64BIT_KERNEL
120 select SYS_SUPPORTS_LITTLE_ENDIAN
121
122 config MACH_DECSTATION
123 bool "DECstations"
124 select BOOT_ELF32
125 select CEVT_DS1287
126 select CEVT_R4K
127 select CSRC_IOASIC
128 select CSRC_R4K
129 select CPU_DADDI_WORKAROUNDS if 64BIT
130 select CPU_R4000_WORKAROUNDS if 64BIT
131 select CPU_R4400_WORKAROUNDS if 64BIT
132 select DMA_NONCOHERENT
133 select NO_IOPORT
134 select IRQ_CPU
135 select SYS_HAS_CPU_R3000
136 select SYS_HAS_CPU_R4X00
137 select SYS_SUPPORTS_32BIT_KERNEL
138 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
139 select SYS_SUPPORTS_LITTLE_ENDIAN
140 select SYS_SUPPORTS_128HZ
141 select SYS_SUPPORTS_256HZ
142 select SYS_SUPPORTS_1024HZ
143 help
144 This enables support for DEC's MIPS based workstations. For details
145 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
146 DECstation porting pages on <http://decstation.unix-ag.org/>.
147
148 If you have one of the following DECstation Models you definitely
149 want to choose R4xx0 for the CPU Type:
150
151 DECstation 5000/50
152 DECstation 5000/150
153 DECstation 5000/260
154 DECsystem 5900/260
155
156 otherwise choose R3000.
157
158 config MACH_JAZZ
159 bool "Jazz family of machines"
160 select ARC
161 select ARC32
162 select ARCH_MAY_HAVE_PC_FDC
163 select CEVT_R4K
164 select CSRC_R4K
165 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
166 select GENERIC_ISA_DMA
167 select IRQ_CPU
168 select I8253
169 select I8259
170 select ISA
171 select SYS_HAS_CPU_R4X00
172 select SYS_SUPPORTS_32BIT_KERNEL
173 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
174 select SYS_SUPPORTS_100HZ
175 help
176 This a family of machines based on the MIPS R4030 chipset which was
177 used by several vendors to build RISC/os and Windows NT workstations.
178 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
179 Olivetti M700-10 workstations.
180
181 config MACH_JZ4740
182 bool "Ingenic JZ4740 based machines"
183 select SYS_HAS_CPU_MIPS32_R1
184 select SYS_SUPPORTS_32BIT_KERNEL
185 select SYS_SUPPORTS_LITTLE_ENDIAN
186 select DMA_NONCOHERENT
187 select IRQ_CPU
188 select GENERIC_GPIO
189 select ARCH_REQUIRE_GPIOLIB
190 select SYS_HAS_EARLY_PRINTK
191 select HAVE_PWM
192
193 config LASAT
194 bool "LASAT Networks platforms"
195 select CEVT_R4K
196 select CSRC_R4K
197 select DMA_NONCOHERENT
198 select SYS_HAS_EARLY_PRINTK
199 select HW_HAS_PCI
200 select IRQ_CPU
201 select PCI_GT64XXX_PCI0
202 select MIPS_NILE4
203 select R5000_CPU_SCACHE
204 select SYS_HAS_CPU_R5000
205 select SYS_SUPPORTS_32BIT_KERNEL
206 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
207 select SYS_SUPPORTS_LITTLE_ENDIAN
208
209 config MACH_LOONGSON
210 bool "Loongson family of machines"
211 select SYS_SUPPORTS_ZBOOT
212 help
213 This enables the support of Loongson family of machines.
214
215 Loongson is a family of general-purpose MIPS-compatible CPUs.
216 developed at Institute of Computing Technology (ICT),
217 Chinese Academy of Sciences (CAS) in the People's Republic
218 of China. The chief architect is Professor Weiwu Hu.
219
220 config MIPS_MALTA
221 bool "MIPS Malta board"
222 select ARCH_MAY_HAVE_PC_FDC
223 select BOOT_ELF32
224 select BOOT_RAW
225 select CEVT_R4K
226 select CSRC_R4K
227 select DMA_NONCOHERENT
228 select GENERIC_ISA_DMA
229 select IRQ_CPU
230 select IRQ_GIC
231 select HW_HAS_PCI
232 select I8253
233 select I8259
234 select MIPS_BOARDS_GEN
235 select MIPS_BONITO64
236 select MIPS_CPU_SCACHE
237 select PCI_GT64XXX_PCI0
238 select MIPS_MSC
239 select SWAP_IO_SPACE
240 select SYS_HAS_CPU_MIPS32_R1
241 select SYS_HAS_CPU_MIPS32_R2
242 select SYS_HAS_CPU_MIPS64_R1
243 select SYS_HAS_CPU_NEVADA
244 select SYS_HAS_CPU_RM7000
245 select SYS_HAS_EARLY_PRINTK
246 select SYS_SUPPORTS_32BIT_KERNEL
247 select SYS_SUPPORTS_64BIT_KERNEL
248 select SYS_SUPPORTS_BIG_ENDIAN
249 select SYS_SUPPORTS_LITTLE_ENDIAN
250 select SYS_SUPPORTS_MIPS_CMP
251 select SYS_SUPPORTS_MULTITHREADING
252 select SYS_SUPPORTS_SMARTMIPS
253 select SYS_SUPPORTS_ZBOOT
254 help
255 This enables support for the MIPS Technologies Malta evaluation
256 board.
257
258 config MIPS_SIM
259 bool 'MIPS simulator (MIPSsim)'
260 select CEVT_R4K
261 select CSRC_R4K
262 select DMA_NONCOHERENT
263 select SYS_HAS_EARLY_PRINTK
264 select IRQ_CPU
265 select BOOT_RAW
266 select SYS_HAS_CPU_MIPS32_R1
267 select SYS_HAS_CPU_MIPS32_R2
268 select SYS_HAS_EARLY_PRINTK
269 select SYS_SUPPORTS_32BIT_KERNEL
270 select SYS_SUPPORTS_BIG_ENDIAN
271 select SYS_SUPPORTS_MULTITHREADING
272 select SYS_SUPPORTS_LITTLE_ENDIAN
273 help
274 This option enables support for MIPS Technologies MIPSsim software
275 emulator.
276
277 config NEC_MARKEINS
278 bool "NEC EMMA2RH Mark-eins board"
279 select SOC_EMMA2RH
280 select HW_HAS_PCI
281 help
282 This enables support for the NEC Electronics Mark-eins boards.
283
284 config MACH_VR41XX
285 bool "NEC VR4100 series based machines"
286 select CEVT_R4K
287 select CSRC_R4K
288 select SYS_HAS_CPU_VR41XX
289 select ARCH_REQUIRE_GPIOLIB
290
291 config NXP_STB220
292 bool "NXP STB220 board"
293 select SOC_PNX833X
294 help
295 Support for NXP Semiconductors STB220 Development Board.
296
297 config NXP_STB225
298 bool "NXP 225 board"
299 select SOC_PNX833X
300 select SOC_PNX8335
301 help
302 Support for NXP Semiconductors STB225 Development Board.
303
304 config PNX8550_JBS
305 bool "NXP PNX8550 based JBS board"
306 select PNX8550
307 select SYS_SUPPORTS_LITTLE_ENDIAN
308
309 config PNX8550_STB810
310 bool "NXP PNX8550 based STB810 board"
311 select PNX8550
312 select SYS_SUPPORTS_LITTLE_ENDIAN
313
314 config PMC_MSP
315 bool "PMC-Sierra MSP chipsets"
316 depends on EXPERIMENTAL
317 select DMA_NONCOHERENT
318 select SWAP_IO_SPACE
319 select NO_EXCEPT_FILL
320 select BOOT_RAW
321 select SYS_HAS_CPU_MIPS32_R1
322 select SYS_HAS_CPU_MIPS32_R2
323 select SYS_SUPPORTS_32BIT_KERNEL
324 select SYS_SUPPORTS_BIG_ENDIAN
325 select IRQ_CPU
326 select SERIAL_8250
327 select SERIAL_8250_CONSOLE
328 help
329 This adds support for the PMC-Sierra family of Multi-Service
330 Processor System-On-A-Chips. These parts include a number
331 of integrated peripherals, interfaces and DSPs in addition to
332 a variety of MIPS cores.
333
334 config PMC_YOSEMITE
335 bool "PMC-Sierra Yosemite eval board"
336 select CEVT_R4K
337 select CSRC_R4K
338 select DMA_COHERENT
339 select HW_HAS_PCI
340 select IRQ_CPU
341 select IRQ_CPU_RM7K
342 select IRQ_CPU_RM9K
343 select SWAP_IO_SPACE
344 select SYS_HAS_CPU_RM9000
345 select SYS_HAS_EARLY_PRINTK
346 select SYS_SUPPORTS_32BIT_KERNEL
347 select SYS_SUPPORTS_64BIT_KERNEL
348 select SYS_SUPPORTS_BIG_ENDIAN
349 select SYS_SUPPORTS_HIGHMEM
350 select SYS_SUPPORTS_SMP
351 help
352 Yosemite is an evaluation board for the RM9000x2 processor
353 manufactured by PMC-Sierra.
354
355 config POWERTV
356 bool "Cisco PowerTV"
357 select BOOT_ELF32
358 select CEVT_R4K
359 select CPU_MIPSR2_IRQ_VI
360 select CPU_MIPSR2_IRQ_EI
361 select CSRC_POWERTV
362 select DMA_NONCOHERENT
363 select HW_HAS_PCI
364 select SYS_HAS_EARLY_PRINTK
365 select SYS_HAS_CPU_MIPS32_R2
366 select SYS_SUPPORTS_32BIT_KERNEL
367 select SYS_SUPPORTS_BIG_ENDIAN
368 select SYS_SUPPORTS_HIGHMEM
369 select USB_OHCI_LITTLE_ENDIAN
370 help
371 This enables support for the Cisco PowerTV Platform.
372
373 config SGI_IP22
374 bool "SGI IP22 (Indy/Indigo2)"
375 select ARC
376 select ARC32
377 select BOOT_ELF32
378 select CEVT_R4K
379 select CSRC_R4K
380 select DEFAULT_SGI_PARTITION
381 select DMA_NONCOHERENT
382 select HW_HAS_EISA
383 select I8253
384 select I8259
385 select IP22_CPU_SCACHE
386 select IRQ_CPU
387 select GENERIC_ISA_DMA_SUPPORT_BROKEN
388 select SGI_HAS_I8042
389 select SGI_HAS_INDYDOG
390 select SGI_HAS_HAL2
391 select SGI_HAS_SEEQ
392 select SGI_HAS_WD93
393 select SGI_HAS_ZILOG
394 select SWAP_IO_SPACE
395 select SYS_HAS_CPU_R4X00
396 select SYS_HAS_CPU_R5000
397 #
398 # Disable EARLY_PRINTK for now since it leads to overwritten prom
399 # memory during early boot on some machines.
400 #
401 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
402 # for a more details discussion
403 #
404 # select SYS_HAS_EARLY_PRINTK
405 select SYS_SUPPORTS_32BIT_KERNEL
406 select SYS_SUPPORTS_64BIT_KERNEL
407 select SYS_SUPPORTS_BIG_ENDIAN
408 help
409 This are the SGI Indy, Challenge S and Indigo2, as well as certain
410 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
411 that runs on these, say Y here.
412
413 config SGI_IP27
414 bool "SGI IP27 (Origin200/2000)"
415 select ARC
416 select ARC64
417 select BOOT_ELF64
418 select DEFAULT_SGI_PARTITION
419 select DMA_COHERENT
420 select SYS_HAS_EARLY_PRINTK
421 select HW_HAS_PCI
422 select NR_CPUS_DEFAULT_64
423 select SYS_HAS_CPU_R10000
424 select SYS_SUPPORTS_64BIT_KERNEL
425 select SYS_SUPPORTS_BIG_ENDIAN
426 select SYS_SUPPORTS_NUMA
427 select SYS_SUPPORTS_SMP
428 help
429 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
430 workstations. To compile a Linux kernel that runs on these, say Y
431 here.
432
433 config SGI_IP28
434 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
435 depends on EXPERIMENTAL
436 select ARC
437 select ARC64
438 select BOOT_ELF64
439 select CEVT_R4K
440 select CSRC_R4K
441 select DEFAULT_SGI_PARTITION
442 select DMA_NONCOHERENT
443 select GENERIC_ISA_DMA_SUPPORT_BROKEN
444 select IRQ_CPU
445 select HW_HAS_EISA
446 select I8253
447 select I8259
448 select SGI_HAS_I8042
449 select SGI_HAS_INDYDOG
450 select SGI_HAS_HAL2
451 select SGI_HAS_SEEQ
452 select SGI_HAS_WD93
453 select SGI_HAS_ZILOG
454 select SWAP_IO_SPACE
455 select SYS_HAS_CPU_R10000
456 #
457 # Disable EARLY_PRINTK for now since it leads to overwritten prom
458 # memory during early boot on some machines.
459 #
460 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
461 # for a more details discussion
462 #
463 # select SYS_HAS_EARLY_PRINTK
464 select SYS_SUPPORTS_64BIT_KERNEL
465 select SYS_SUPPORTS_BIG_ENDIAN
466 help
467 This is the SGI Indigo2 with R10000 processor. To compile a Linux
468 kernel that runs on these, say Y here.
469
470 config SGI_IP32
471 bool "SGI IP32 (O2)"
472 select ARC
473 select ARC32
474 select BOOT_ELF32
475 select CEVT_R4K
476 select CSRC_R4K
477 select DMA_NONCOHERENT
478 select HW_HAS_PCI
479 select IRQ_CPU
480 select R5000_CPU_SCACHE
481 select RM7000_CPU_SCACHE
482 select SYS_HAS_CPU_R5000
483 select SYS_HAS_CPU_R10000 if BROKEN
484 select SYS_HAS_CPU_RM7000
485 select SYS_HAS_CPU_NEVADA
486 select SYS_SUPPORTS_64BIT_KERNEL
487 select SYS_SUPPORTS_BIG_ENDIAN
488 help
489 If you want this kernel to run on SGI O2 workstation, say Y here.
490
491 config SIBYTE_CRHINE
492 bool "Sibyte BCM91120C-CRhine"
493 depends on EXPERIMENTAL
494 select BOOT_ELF32
495 select DMA_COHERENT
496 select SIBYTE_BCM1120
497 select SWAP_IO_SPACE
498 select SYS_HAS_CPU_SB1
499 select SYS_SUPPORTS_BIG_ENDIAN
500 select SYS_SUPPORTS_LITTLE_ENDIAN
501
502 config SIBYTE_CARMEL
503 bool "Sibyte BCM91120x-Carmel"
504 depends on EXPERIMENTAL
505 select BOOT_ELF32
506 select DMA_COHERENT
507 select SIBYTE_BCM1120
508 select SWAP_IO_SPACE
509 select SYS_HAS_CPU_SB1
510 select SYS_SUPPORTS_BIG_ENDIAN
511 select SYS_SUPPORTS_LITTLE_ENDIAN
512
513 config SIBYTE_CRHONE
514 bool "Sibyte BCM91125C-CRhone"
515 depends on EXPERIMENTAL
516 select BOOT_ELF32
517 select DMA_COHERENT
518 select SIBYTE_BCM1125
519 select SWAP_IO_SPACE
520 select SYS_HAS_CPU_SB1
521 select SYS_SUPPORTS_BIG_ENDIAN
522 select SYS_SUPPORTS_HIGHMEM
523 select SYS_SUPPORTS_LITTLE_ENDIAN
524
525 config SIBYTE_RHONE
526 bool "Sibyte BCM91125E-Rhone"
527 depends on EXPERIMENTAL
528 select BOOT_ELF32
529 select DMA_COHERENT
530 select SIBYTE_BCM1125H
531 select SWAP_IO_SPACE
532 select SYS_HAS_CPU_SB1
533 select SYS_SUPPORTS_BIG_ENDIAN
534 select SYS_SUPPORTS_LITTLE_ENDIAN
535
536 config SIBYTE_SWARM
537 bool "Sibyte BCM91250A-SWARM"
538 select BOOT_ELF32
539 select DMA_COHERENT
540 select HAVE_PATA_PLATFORM
541 select NR_CPUS_DEFAULT_2
542 select SIBYTE_SB1250
543 select SWAP_IO_SPACE
544 select SYS_HAS_CPU_SB1
545 select SYS_SUPPORTS_BIG_ENDIAN
546 select SYS_SUPPORTS_HIGHMEM
547 select SYS_SUPPORTS_LITTLE_ENDIAN
548 select ZONE_DMA32 if 64BIT
549
550 config SIBYTE_LITTLESUR
551 bool "Sibyte BCM91250C2-LittleSur"
552 depends on EXPERIMENTAL
553 select BOOT_ELF32
554 select DMA_COHERENT
555 select HAVE_PATA_PLATFORM
556 select NR_CPUS_DEFAULT_2
557 select SIBYTE_SB1250
558 select SWAP_IO_SPACE
559 select SYS_HAS_CPU_SB1
560 select SYS_SUPPORTS_BIG_ENDIAN
561 select SYS_SUPPORTS_HIGHMEM
562 select SYS_SUPPORTS_LITTLE_ENDIAN
563
564 config SIBYTE_SENTOSA
565 bool "Sibyte BCM91250E-Sentosa"
566 depends on EXPERIMENTAL
567 select BOOT_ELF32
568 select DMA_COHERENT
569 select NR_CPUS_DEFAULT_2
570 select SIBYTE_SB1250
571 select SWAP_IO_SPACE
572 select SYS_HAS_CPU_SB1
573 select SYS_SUPPORTS_BIG_ENDIAN
574 select SYS_SUPPORTS_LITTLE_ENDIAN
575
576 config SIBYTE_BIGSUR
577 bool "Sibyte BCM91480B-BigSur"
578 select BOOT_ELF32
579 select DMA_COHERENT
580 select NR_CPUS_DEFAULT_4
581 select SIBYTE_BCM1x80
582 select SWAP_IO_SPACE
583 select SYS_HAS_CPU_SB1
584 select SYS_SUPPORTS_BIG_ENDIAN
585 select SYS_SUPPORTS_HIGHMEM
586 select SYS_SUPPORTS_LITTLE_ENDIAN
587 select ZONE_DMA32 if 64BIT
588
589 config SNI_RM
590 bool "SNI RM200/300/400"
591 select ARC if CPU_LITTLE_ENDIAN
592 select ARC32 if CPU_LITTLE_ENDIAN
593 select SNIPROM if CPU_BIG_ENDIAN
594 select ARCH_MAY_HAVE_PC_FDC
595 select BOOT_ELF32
596 select CEVT_R4K
597 select CSRC_R4K
598 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
599 select DMA_NONCOHERENT
600 select GENERIC_ISA_DMA
601 select HW_HAS_EISA
602 select HW_HAS_PCI
603 select IRQ_CPU
604 select I8253
605 select I8259
606 select ISA
607 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
608 select SYS_HAS_CPU_R4X00
609 select SYS_HAS_CPU_R5000
610 select SYS_HAS_CPU_R10000
611 select R5000_CPU_SCACHE
612 select SYS_HAS_EARLY_PRINTK
613 select SYS_SUPPORTS_32BIT_KERNEL
614 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
615 select SYS_SUPPORTS_BIG_ENDIAN
616 select SYS_SUPPORTS_HIGHMEM
617 select SYS_SUPPORTS_LITTLE_ENDIAN
618 help
619 The SNI RM200/300/400 are MIPS-based machines manufactured by
620 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
621 Technology and now in turn merged with Fujitsu. Say Y here to
622 support this machine type.
623
624 config MACH_TX39XX
625 bool "Toshiba TX39 series based machines"
626
627 config MACH_TX49XX
628 bool "Toshiba TX49 series based machines"
629
630 config MIKROTIK_RB532
631 bool "Mikrotik RB532 boards"
632 select CEVT_R4K
633 select CSRC_R4K
634 select DMA_NONCOHERENT
635 select HW_HAS_PCI
636 select IRQ_CPU
637 select SYS_HAS_CPU_MIPS32_R1
638 select SYS_SUPPORTS_32BIT_KERNEL
639 select SYS_SUPPORTS_LITTLE_ENDIAN
640 select SWAP_IO_SPACE
641 select BOOT_RAW
642 select ARCH_REQUIRE_GPIOLIB
643 help
644 Support the Mikrotik(tm) RouterBoard 532 series,
645 based on the IDT RC32434 SoC.
646
647 config WR_PPMC
648 bool "Wind River PPMC board"
649 select CEVT_R4K
650 select CSRC_R4K
651 select IRQ_CPU
652 select BOOT_ELF32
653 select DMA_NONCOHERENT
654 select HW_HAS_PCI
655 select PCI_GT64XXX_PCI0
656 select SWAP_IO_SPACE
657 select SYS_HAS_CPU_MIPS32_R1
658 select SYS_HAS_CPU_MIPS32_R2
659 select SYS_HAS_CPU_MIPS64_R1
660 select SYS_HAS_CPU_NEVADA
661 select SYS_HAS_CPU_RM7000
662 select SYS_SUPPORTS_32BIT_KERNEL
663 select SYS_SUPPORTS_64BIT_KERNEL
664 select SYS_SUPPORTS_BIG_ENDIAN
665 select SYS_SUPPORTS_LITTLE_ENDIAN
666 help
667 This enables support for the Wind River MIPS32 4KC PPMC evaluation
668 board, which is based on GT64120 bridge chip.
669
670 config CAVIUM_OCTEON_SIMULATOR
671 bool "Cavium Networks Octeon Simulator"
672 select CEVT_R4K
673 select 64BIT_PHYS_ADDR
674 select DMA_COHERENT
675 select SYS_SUPPORTS_64BIT_KERNEL
676 select SYS_SUPPORTS_BIG_ENDIAN
677 select SYS_SUPPORTS_HIGHMEM
678 select SYS_SUPPORTS_HOTPLUG_CPU
679 select SYS_HAS_CPU_CAVIUM_OCTEON
680 help
681 The Octeon simulator is software performance model of the Cavium
682 Octeon Processor. It supports simulating Octeon processors on x86
683 hardware.
684
685 config CAVIUM_OCTEON_REFERENCE_BOARD
686 bool "Cavium Networks Octeon reference board"
687 select CEVT_R4K
688 select 64BIT_PHYS_ADDR
689 select DMA_COHERENT
690 select SYS_SUPPORTS_64BIT_KERNEL
691 select SYS_SUPPORTS_BIG_ENDIAN
692 select SYS_SUPPORTS_HIGHMEM
693 select SYS_SUPPORTS_HOTPLUG_CPU
694 select SYS_HAS_EARLY_PRINTK
695 select SYS_HAS_CPU_CAVIUM_OCTEON
696 select SWAP_IO_SPACE
697 select HW_HAS_PCI
698 select ARCH_SUPPORTS_MSI
699 select ZONE_DMA32
700 select USB_ARCH_HAS_OHCI
701 select USB_ARCH_HAS_EHCI
702 help
703 This option supports all of the Octeon reference boards from Cavium
704 Networks. It builds a kernel that dynamically determines the Octeon
705 CPU type and supports all known board reference implementations.
706 Some of the supported boards are:
707 EBT3000
708 EBH3000
709 EBH3100
710 Thunder
711 Kodama
712 Hikari
713 Say Y here for most Octeon reference boards.
714
715 endchoice
716
717 source "arch/mips/alchemy/Kconfig"
718 source "arch/mips/bcm63xx/Kconfig"
719 source "arch/mips/jazz/Kconfig"
720 source "arch/mips/jz4740/Kconfig"
721 source "arch/mips/lasat/Kconfig"
722 source "arch/mips/pmc-sierra/Kconfig"
723 source "arch/mips/powertv/Kconfig"
724 source "arch/mips/sgi-ip27/Kconfig"
725 source "arch/mips/sibyte/Kconfig"
726 source "arch/mips/txx9/Kconfig"
727 source "arch/mips/vr41xx/Kconfig"
728 source "arch/mips/cavium-octeon/Kconfig"
729 source "arch/mips/loongson/Kconfig"
730
731 endmenu
732
733 config RWSEM_GENERIC_SPINLOCK
734 bool
735 default y
736
737 config RWSEM_XCHGADD_ALGORITHM
738 bool
739
740 config ARCH_HAS_ILOG2_U32
741 bool
742 default n
743
744 config ARCH_HAS_ILOG2_U64
745 bool
746 default n
747
748 config ARCH_SUPPORTS_OPROFILE
749 bool
750 default y if !MIPS_MT_SMTC
751
752 config GENERIC_FIND_NEXT_BIT
753 bool
754 default y
755
756 config GENERIC_HWEIGHT
757 bool
758 default y
759
760 config GENERIC_CALIBRATE_DELAY
761 bool
762 default y
763
764 config GENERIC_CLOCKEVENTS
765 bool
766 default y
767
768 config GENERIC_CMOS_UPDATE
769 bool
770 default y
771
772 config SCHED_OMIT_FRAME_POINTER
773 bool
774 default y
775
776 config GENERIC_HARDIRQS_NO__DO_IRQ
777 def_bool y
778
779 #
780 # Select some configuration options automatically based on user selections.
781 #
782 config ARC
783 bool
784
785 config ARCH_MAY_HAVE_PC_FDC
786 bool
787
788 config BOOT_RAW
789 bool
790
791 config CEVT_BCM1480
792 bool
793
794 config CEVT_DS1287
795 bool
796
797 config CEVT_GT641XX
798 bool
799
800 config CEVT_R4K_LIB
801 bool
802
803 config CEVT_R4K
804 select CEVT_R4K_LIB
805 bool
806
807 config CEVT_SB1250
808 bool
809
810 config CEVT_TXX9
811 bool
812
813 config CSRC_BCM1480
814 bool
815
816 config CSRC_IOASIC
817 bool
818
819 config CSRC_POWERTV
820 bool
821
822 config CSRC_R4K_LIB
823 bool
824
825 config CSRC_R4K
826 select CSRC_R4K_LIB
827 bool
828
829 config CSRC_SB1250
830 bool
831
832 config GPIO_TXX9
833 select GENERIC_GPIO
834 select ARCH_REQUIRE_GPIOLIB
835 bool
836
837 config CFE
838 bool
839
840 config DMA_COHERENT
841 bool
842
843 config DMA_NONCOHERENT
844 bool
845 select NEED_DMA_MAP_STATE
846
847 config NEED_DMA_MAP_STATE
848 bool
849
850 config SYS_HAS_EARLY_PRINTK
851 bool
852
853 config HOTPLUG_CPU
854 bool "Support for hot-pluggable CPUs"
855 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
856 help
857 Say Y here to allow turning CPUs off and on. CPUs can be
858 controlled through /sys/devices/system/cpu.
859 (Note: power management support will enable this option
860 automatically on SMP systems. )
861 Say N if you want to disable CPU hotplug.
862
863 config SYS_SUPPORTS_HOTPLUG_CPU
864 bool
865
866 config I8259
867 bool
868
869 config MIPS_BONITO64
870 bool
871
872 config MIPS_MSC
873 bool
874
875 config MIPS_NILE4
876 bool
877
878 config MIPS_DISABLE_OBSOLETE_IDE
879 bool
880
881 config SYNC_R4K
882 bool
883
884 config NO_IOPORT
885 def_bool n
886
887 config GENERIC_ISA_DMA
888 bool
889 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
890 select ISA_DMA_API
891
892 config GENERIC_ISA_DMA_SUPPORT_BROKEN
893 bool
894 select GENERIC_ISA_DMA
895
896 config ISA_DMA_API
897 bool
898
899 config GENERIC_GPIO
900 bool
901
902 #
903 # Endianess selection. Sufficiently obscure so many users don't know what to
904 # answer,so we try hard to limit the available choices. Also the use of a
905 # choice statement should be more obvious to the user.
906 #
907 choice
908 prompt "Endianess selection"
909 help
910 Some MIPS machines can be configured for either little or big endian
911 byte order. These modes require different kernels and a different
912 Linux distribution. In general there is one preferred byteorder for a
913 particular system but some systems are just as commonly used in the
914 one or the other endianness.
915
916 config CPU_BIG_ENDIAN
917 bool "Big endian"
918 depends on SYS_SUPPORTS_BIG_ENDIAN
919
920 config CPU_LITTLE_ENDIAN
921 bool "Little endian"
922 depends on SYS_SUPPORTS_LITTLE_ENDIAN
923 help
924
925 endchoice
926
927 config EXPORT_UASM
928 bool
929
930 config SYS_SUPPORTS_APM_EMULATION
931 bool
932
933 config SYS_SUPPORTS_BIG_ENDIAN
934 bool
935
936 config SYS_SUPPORTS_LITTLE_ENDIAN
937 bool
938
939 config SYS_SUPPORTS_HUGETLBFS
940 bool
941 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
942 default y
943
944 config IRQ_CPU
945 bool
946
947 config IRQ_CPU_RM7K
948 bool
949
950 config IRQ_CPU_RM9K
951 bool
952
953 config IRQ_MSP_SLP
954 bool
955
956 config IRQ_MSP_CIC
957 bool
958
959 config IRQ_TXX9
960 bool
961
962 config IRQ_GT641XX
963 bool
964
965 config IRQ_GIC
966 bool
967
968 config IRQ_CPU_OCTEON
969 bool
970
971 config MIPS_BOARDS_GEN
972 bool
973
974 config PCI_GT64XXX_PCI0
975 bool
976
977 config NO_EXCEPT_FILL
978 bool
979
980 config MIPS_RM9122
981 bool
982 select SERIAL_RM9000
983
984 config SOC_EMMA2RH
985 bool
986 select CEVT_R4K
987 select CSRC_R4K
988 select DMA_NONCOHERENT
989 select IRQ_CPU
990 select SWAP_IO_SPACE
991 select SYS_HAS_CPU_R5500
992 select SYS_SUPPORTS_32BIT_KERNEL
993 select SYS_SUPPORTS_64BIT_KERNEL
994 select SYS_SUPPORTS_BIG_ENDIAN
995
996 config SOC_PNX833X
997 bool
998 select CEVT_R4K
999 select CSRC_R4K
1000 select IRQ_CPU
1001 select DMA_NONCOHERENT
1002 select SYS_HAS_CPU_MIPS32_R2
1003 select SYS_SUPPORTS_32BIT_KERNEL
1004 select SYS_SUPPORTS_LITTLE_ENDIAN
1005 select SYS_SUPPORTS_BIG_ENDIAN
1006 select GENERIC_GPIO
1007 select CPU_MIPSR2_IRQ_VI
1008
1009 config SOC_PNX8335
1010 bool
1011 select SOC_PNX833X
1012
1013 config PNX8550
1014 bool
1015 select SOC_PNX8550
1016
1017 config SOC_PNX8550
1018 bool
1019 select DMA_NONCOHERENT
1020 select HW_HAS_PCI
1021 select SYS_HAS_CPU_MIPS32_R1
1022 select SYS_HAS_EARLY_PRINTK
1023 select SYS_SUPPORTS_32BIT_KERNEL
1024 select GENERIC_GPIO
1025
1026 config SWAP_IO_SPACE
1027 bool
1028
1029 config SERIAL_RM9000
1030 bool
1031
1032 config SGI_HAS_INDYDOG
1033 bool
1034
1035 config SGI_HAS_HAL2
1036 bool
1037
1038 config SGI_HAS_SEEQ
1039 bool
1040
1041 config SGI_HAS_WD93
1042 bool
1043
1044 config SGI_HAS_ZILOG
1045 bool
1046
1047 config SGI_HAS_I8042
1048 bool
1049
1050 config DEFAULT_SGI_PARTITION
1051 bool
1052
1053 config ARC32
1054 bool
1055
1056 config SNIPROM
1057 bool
1058
1059 config BOOT_ELF32
1060 bool
1061
1062 config MIPS_L1_CACHE_SHIFT
1063 int
1064 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL
1065 default "6" if MIPS_CPU_SCACHE
1066 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1067 default "5"
1068
1069 config HAVE_STD_PC_SERIAL_PORT
1070 bool
1071
1072 config ARC_CONSOLE
1073 bool "ARC console support"
1074 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1075
1076 config ARC_MEMORY
1077 bool
1078 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1079 default y
1080
1081 config ARC_PROMLIB
1082 bool
1083 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1084 default y
1085
1086 config ARC64
1087 bool
1088
1089 config BOOT_ELF64
1090 bool
1091
1092 menu "CPU selection"
1093
1094 choice
1095 prompt "CPU type"
1096 default CPU_R4X00
1097
1098 config CPU_LOONGSON2E
1099 bool "Loongson 2E"
1100 depends on SYS_HAS_CPU_LOONGSON2E
1101 select CPU_LOONGSON2
1102 help
1103 The Loongson 2E processor implements the MIPS III instruction set
1104 with many extensions.
1105
1106 It has an internal FPGA northbridge, which is compatiable to
1107 bonito64.
1108
1109 config CPU_LOONGSON2F
1110 bool "Loongson 2F"
1111 depends on SYS_HAS_CPU_LOONGSON2F
1112 select CPU_LOONGSON2
1113 select GENERIC_GPIO
1114 select ARCH_REQUIRE_GPIOLIB
1115 help
1116 The Loongson 2F processor implements the MIPS III instruction set
1117 with many extensions.
1118
1119 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1120 have a similar programming interface with FPGA northbridge used in
1121 Loongson2E.
1122
1123 config CPU_MIPS32_R1
1124 bool "MIPS32 Release 1"
1125 depends on SYS_HAS_CPU_MIPS32_R1
1126 select CPU_HAS_PREFETCH
1127 select CPU_SUPPORTS_32BIT_KERNEL
1128 select CPU_SUPPORTS_HIGHMEM
1129 help
1130 Choose this option to build a kernel for release 1 or later of the
1131 MIPS32 architecture. Most modern embedded systems with a 32-bit
1132 MIPS processor are based on a MIPS32 processor. If you know the
1133 specific type of processor in your system, choose those that one
1134 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1135 Release 2 of the MIPS32 architecture is available since several
1136 years so chances are you even have a MIPS32 Release 2 processor
1137 in which case you should choose CPU_MIPS32_R2 instead for better
1138 performance.
1139
1140 config CPU_MIPS32_R2
1141 bool "MIPS32 Release 2"
1142 depends on SYS_HAS_CPU_MIPS32_R2
1143 select CPU_HAS_PREFETCH
1144 select CPU_SUPPORTS_32BIT_KERNEL
1145 select CPU_SUPPORTS_HIGHMEM
1146 help
1147 Choose this option to build a kernel for release 2 or later of the
1148 MIPS32 architecture. Most modern embedded systems with a 32-bit
1149 MIPS processor are based on a MIPS32 processor. If you know the
1150 specific type of processor in your system, choose those that one
1151 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1152
1153 config CPU_MIPS64_R1
1154 bool "MIPS64 Release 1"
1155 depends on SYS_HAS_CPU_MIPS64_R1
1156 select CPU_HAS_PREFETCH
1157 select CPU_SUPPORTS_32BIT_KERNEL
1158 select CPU_SUPPORTS_64BIT_KERNEL
1159 select CPU_SUPPORTS_HIGHMEM
1160 select CPU_SUPPORTS_HUGEPAGES
1161 help
1162 Choose this option to build a kernel for release 1 or later of the
1163 MIPS64 architecture. Many modern embedded systems with a 64-bit
1164 MIPS processor are based on a MIPS64 processor. If you know the
1165 specific type of processor in your system, choose those that one
1166 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1167 Release 2 of the MIPS64 architecture is available since several
1168 years so chances are you even have a MIPS64 Release 2 processor
1169 in which case you should choose CPU_MIPS64_R2 instead for better
1170 performance.
1171
1172 config CPU_MIPS64_R2
1173 bool "MIPS64 Release 2"
1174 depends on SYS_HAS_CPU_MIPS64_R2
1175 select CPU_HAS_PREFETCH
1176 select CPU_SUPPORTS_32BIT_KERNEL
1177 select CPU_SUPPORTS_64BIT_KERNEL
1178 select CPU_SUPPORTS_HIGHMEM
1179 select CPU_SUPPORTS_HUGEPAGES
1180 help
1181 Choose this option to build a kernel for release 2 or later of the
1182 MIPS64 architecture. Many modern embedded systems with a 64-bit
1183 MIPS processor are based on a MIPS64 processor. If you know the
1184 specific type of processor in your system, choose those that one
1185 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1186
1187 config CPU_R3000
1188 bool "R3000"
1189 depends on SYS_HAS_CPU_R3000
1190 select CPU_HAS_WB
1191 select CPU_SUPPORTS_32BIT_KERNEL
1192 select CPU_SUPPORTS_HIGHMEM
1193 help
1194 Please make sure to pick the right CPU type. Linux/MIPS is not
1195 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1196 *not* work on R4000 machines and vice versa. However, since most
1197 of the supported machines have an R4000 (or similar) CPU, R4x00
1198 might be a safe bet. If the resulting kernel does not work,
1199 try to recompile with R3000.
1200
1201 config CPU_TX39XX
1202 bool "R39XX"
1203 depends on SYS_HAS_CPU_TX39XX
1204 select CPU_SUPPORTS_32BIT_KERNEL
1205
1206 config CPU_VR41XX
1207 bool "R41xx"
1208 depends on SYS_HAS_CPU_VR41XX
1209 select CPU_SUPPORTS_32BIT_KERNEL
1210 select CPU_SUPPORTS_64BIT_KERNEL
1211 help
1212 The options selects support for the NEC VR4100 series of processors.
1213 Only choose this option if you have one of these processors as a
1214 kernel built with this option will not run on any other type of
1215 processor or vice versa.
1216
1217 config CPU_R4300
1218 bool "R4300"
1219 depends on SYS_HAS_CPU_R4300
1220 select CPU_SUPPORTS_32BIT_KERNEL
1221 select CPU_SUPPORTS_64BIT_KERNEL
1222 help
1223 MIPS Technologies R4300-series processors.
1224
1225 config CPU_R4X00
1226 bool "R4x00"
1227 depends on SYS_HAS_CPU_R4X00
1228 select CPU_SUPPORTS_32BIT_KERNEL
1229 select CPU_SUPPORTS_64BIT_KERNEL
1230 help
1231 MIPS Technologies R4000-series processors other than 4300, including
1232 the R4000, R4400, R4600, and 4700.
1233
1234 config CPU_TX49XX
1235 bool "R49XX"
1236 depends on SYS_HAS_CPU_TX49XX
1237 select CPU_HAS_PREFETCH
1238 select CPU_SUPPORTS_32BIT_KERNEL
1239 select CPU_SUPPORTS_64BIT_KERNEL
1240
1241 config CPU_R5000
1242 bool "R5000"
1243 depends on SYS_HAS_CPU_R5000
1244 select CPU_SUPPORTS_32BIT_KERNEL
1245 select CPU_SUPPORTS_64BIT_KERNEL
1246 help
1247 MIPS Technologies R5000-series processors other than the Nevada.
1248
1249 config CPU_R5432
1250 bool "R5432"
1251 depends on SYS_HAS_CPU_R5432
1252 select CPU_SUPPORTS_32BIT_KERNEL
1253 select CPU_SUPPORTS_64BIT_KERNEL
1254
1255 config CPU_R5500
1256 bool "R5500"
1257 depends on SYS_HAS_CPU_R5500
1258 select CPU_SUPPORTS_32BIT_KERNEL
1259 select CPU_SUPPORTS_64BIT_KERNEL
1260 select CPU_SUPPORTS_HUGEPAGES
1261 help
1262 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1263 instruction set.
1264
1265 config CPU_R6000
1266 bool "R6000"
1267 depends on EXPERIMENTAL
1268 depends on SYS_HAS_CPU_R6000
1269 select CPU_SUPPORTS_32BIT_KERNEL
1270 help
1271 MIPS Technologies R6000 and R6000A series processors. Note these
1272 processors are extremely rare and the support for them is incomplete.
1273
1274 config CPU_NEVADA
1275 bool "RM52xx"
1276 depends on SYS_HAS_CPU_NEVADA
1277 select CPU_SUPPORTS_32BIT_KERNEL
1278 select CPU_SUPPORTS_64BIT_KERNEL
1279 help
1280 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1281
1282 config CPU_R8000
1283 bool "R8000"
1284 depends on EXPERIMENTAL
1285 depends on SYS_HAS_CPU_R8000
1286 select CPU_HAS_PREFETCH
1287 select CPU_SUPPORTS_64BIT_KERNEL
1288 help
1289 MIPS Technologies R8000 processors. Note these processors are
1290 uncommon and the support for them is incomplete.
1291
1292 config CPU_R10000
1293 bool "R10000"
1294 depends on SYS_HAS_CPU_R10000
1295 select CPU_HAS_PREFETCH
1296 select CPU_SUPPORTS_32BIT_KERNEL
1297 select CPU_SUPPORTS_64BIT_KERNEL
1298 select CPU_SUPPORTS_HIGHMEM
1299 help
1300 MIPS Technologies R10000-series processors.
1301
1302 config CPU_RM7000
1303 bool "RM7000"
1304 depends on SYS_HAS_CPU_RM7000
1305 select CPU_HAS_PREFETCH
1306 select CPU_SUPPORTS_32BIT_KERNEL
1307 select CPU_SUPPORTS_64BIT_KERNEL
1308 select CPU_SUPPORTS_HIGHMEM
1309
1310 config CPU_RM9000
1311 bool "RM9000"
1312 depends on SYS_HAS_CPU_RM9000
1313 select CPU_HAS_PREFETCH
1314 select CPU_SUPPORTS_32BIT_KERNEL
1315 select CPU_SUPPORTS_64BIT_KERNEL
1316 select CPU_SUPPORTS_HIGHMEM
1317 select WEAK_ORDERING
1318
1319 config CPU_SB1
1320 bool "SB1"
1321 depends on SYS_HAS_CPU_SB1
1322 select CPU_SUPPORTS_32BIT_KERNEL
1323 select CPU_SUPPORTS_64BIT_KERNEL
1324 select CPU_SUPPORTS_HIGHMEM
1325 select WEAK_ORDERING
1326
1327 config CPU_CAVIUM_OCTEON
1328 bool "Cavium Octeon processor"
1329 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1330 select IRQ_CPU
1331 select IRQ_CPU_OCTEON
1332 select CPU_HAS_PREFETCH
1333 select CPU_SUPPORTS_64BIT_KERNEL
1334 select SYS_SUPPORTS_SMP
1335 select NR_CPUS_DEFAULT_16
1336 select WEAK_ORDERING
1337 select CPU_SUPPORTS_HIGHMEM
1338 select CPU_SUPPORTS_HUGEPAGES
1339 help
1340 The Cavium Octeon processor is a highly integrated chip containing
1341 many ethernet hardware widgets for networking tasks. The processor
1342 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1343 Full details can be found at http://www.caviumnetworks.com.
1344
1345 config CPU_BMIPS3300
1346 bool "BMIPS3300"
1347 depends on SYS_HAS_CPU_BMIPS3300
1348 select DMA_NONCOHERENT
1349 select IRQ_CPU
1350 select SWAP_IO_SPACE
1351 select SYS_SUPPORTS_32BIT_KERNEL
1352 select WEAK_ORDERING
1353 help
1354 Broadcom BMIPS3300 processors.
1355
1356 config CPU_BMIPS4350
1357 bool "BMIPS4350"
1358 depends on SYS_HAS_CPU_BMIPS4350
1359 select CPU_SUPPORTS_32BIT_KERNEL
1360 select DMA_NONCOHERENT
1361 select IRQ_CPU
1362 select SWAP_IO_SPACE
1363 select SYS_SUPPORTS_SMP
1364 select SYS_SUPPORTS_HOTPLUG_CPU
1365 select WEAK_ORDERING
1366 help
1367 Broadcom BMIPS4350 ("VIPER") processors.
1368
1369 config CPU_BMIPS4380
1370 bool "BMIPS4380"
1371 depends on SYS_HAS_CPU_BMIPS4380
1372 select CPU_SUPPORTS_32BIT_KERNEL
1373 select DMA_NONCOHERENT
1374 select IRQ_CPU
1375 select SWAP_IO_SPACE
1376 select SYS_SUPPORTS_SMP
1377 select SYS_SUPPORTS_HOTPLUG_CPU
1378 select WEAK_ORDERING
1379 help
1380 Broadcom BMIPS4380 processors.
1381
1382 config CPU_BMIPS5000
1383 bool "BMIPS5000"
1384 depends on SYS_HAS_CPU_BMIPS5000
1385 select CPU_SUPPORTS_32BIT_KERNEL
1386 select CPU_SUPPORTS_HIGHMEM
1387 select DMA_NONCOHERENT
1388 select IRQ_CPU
1389 select SWAP_IO_SPACE
1390 select SYS_SUPPORTS_SMP
1391 select SYS_SUPPORTS_HOTPLUG_CPU
1392 select WEAK_ORDERING
1393 help
1394 Broadcom BMIPS5000 processors.
1395
1396 endchoice
1397
1398 if CPU_LOONGSON2F
1399 config CPU_NOP_WORKAROUNDS
1400 bool
1401
1402 config CPU_JUMP_WORKAROUNDS
1403 bool
1404
1405 config CPU_LOONGSON2F_WORKAROUNDS
1406 bool "Loongson 2F Workarounds"
1407 default y
1408 select CPU_NOP_WORKAROUNDS
1409 select CPU_JUMP_WORKAROUNDS
1410 help
1411 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1412 require workarounds. Without workarounds the system may hang
1413 unexpectedly. For more information please refer to the gas
1414 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1415
1416 Loongson 2F03 and later have fixed these issues and no workarounds
1417 are needed. The workarounds have no significant side effect on them
1418 but may decrease the performance of the system so this option should
1419 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1420 systems.
1421
1422 If unsure, please say Y.
1423 endif # CPU_LOONGSON2F
1424
1425 config SYS_SUPPORTS_ZBOOT
1426 bool
1427 select HAVE_KERNEL_GZIP
1428 select HAVE_KERNEL_BZIP2
1429 select HAVE_KERNEL_LZMA
1430 select HAVE_KERNEL_LZO
1431
1432 config SYS_SUPPORTS_ZBOOT_UART16550
1433 bool
1434 select SYS_SUPPORTS_ZBOOT
1435
1436 config CPU_LOONGSON2
1437 bool
1438 select CPU_SUPPORTS_32BIT_KERNEL
1439 select CPU_SUPPORTS_64BIT_KERNEL
1440 select CPU_SUPPORTS_HIGHMEM
1441
1442 config SYS_HAS_CPU_LOONGSON2E
1443 bool
1444
1445 config SYS_HAS_CPU_LOONGSON2F
1446 bool
1447 select CPU_SUPPORTS_CPUFREQ
1448 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1449 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1450
1451 config SYS_HAS_CPU_MIPS32_R1
1452 bool
1453
1454 config SYS_HAS_CPU_MIPS32_R2
1455 bool
1456
1457 config SYS_HAS_CPU_MIPS64_R1
1458 bool
1459
1460 config SYS_HAS_CPU_MIPS64_R2
1461 bool
1462
1463 config SYS_HAS_CPU_R3000
1464 bool
1465
1466 config SYS_HAS_CPU_TX39XX
1467 bool
1468
1469 config SYS_HAS_CPU_VR41XX
1470 bool
1471
1472 config SYS_HAS_CPU_R4300
1473 bool
1474
1475 config SYS_HAS_CPU_R4X00
1476 bool
1477
1478 config SYS_HAS_CPU_TX49XX
1479 bool
1480
1481 config SYS_HAS_CPU_R5000
1482 bool
1483
1484 config SYS_HAS_CPU_R5432
1485 bool
1486
1487 config SYS_HAS_CPU_R5500
1488 bool
1489
1490 config SYS_HAS_CPU_R6000
1491 bool
1492
1493 config SYS_HAS_CPU_NEVADA
1494 bool
1495
1496 config SYS_HAS_CPU_R8000
1497 bool
1498
1499 config SYS_HAS_CPU_R10000
1500 bool
1501
1502 config SYS_HAS_CPU_RM7000
1503 bool
1504
1505 config SYS_HAS_CPU_RM9000
1506 bool
1507
1508 config SYS_HAS_CPU_SB1
1509 bool
1510
1511 config SYS_HAS_CPU_CAVIUM_OCTEON
1512 bool
1513
1514 config SYS_HAS_CPU_BMIPS3300
1515 bool
1516
1517 config SYS_HAS_CPU_BMIPS4350
1518 bool
1519
1520 config SYS_HAS_CPU_BMIPS4380
1521 bool
1522
1523 config SYS_HAS_CPU_BMIPS5000
1524 bool
1525
1526 #
1527 # CPU may reorder R->R, R->W, W->R, W->W
1528 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1529 #
1530 config WEAK_ORDERING
1531 bool
1532
1533 #
1534 # CPU may reorder reads and writes beyond LL/SC
1535 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1536 #
1537 config WEAK_REORDERING_BEYOND_LLSC
1538 bool
1539 endmenu
1540
1541 #
1542 # These two indicate any level of the MIPS32 and MIPS64 architecture
1543 #
1544 config CPU_MIPS32
1545 bool
1546 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1547
1548 config CPU_MIPS64
1549 bool
1550 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1551
1552 #
1553 # These two indicate the revision of the architecture, either Release 1 or Release 2
1554 #
1555 config CPU_MIPSR1
1556 bool
1557 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1558
1559 config CPU_MIPSR2
1560 bool
1561 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1562
1563 config SYS_SUPPORTS_32BIT_KERNEL
1564 bool
1565 config SYS_SUPPORTS_64BIT_KERNEL
1566 bool
1567 config CPU_SUPPORTS_32BIT_KERNEL
1568 bool
1569 config CPU_SUPPORTS_64BIT_KERNEL
1570 bool
1571 config CPU_SUPPORTS_CPUFREQ
1572 bool
1573 config CPU_SUPPORTS_ADDRWINCFG
1574 bool
1575 config CPU_SUPPORTS_HUGEPAGES
1576 bool
1577 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1578 bool
1579 config MIPS_PGD_C0_CONTEXT
1580 bool
1581 default y if 64BIT && CPU_MIPSR2
1582
1583 #
1584 # Set to y for ptrace access to watch registers.
1585 #
1586 config HARDWARE_WATCHPOINTS
1587 bool
1588 default y if CPU_MIPSR1 || CPU_MIPSR2
1589
1590 menu "Kernel type"
1591
1592 choice
1593
1594 prompt "Kernel code model"
1595 help
1596 You should only select this option if you have a workload that
1597 actually benefits from 64-bit processing or if your machine has
1598 large memory. You will only be presented a single option in this
1599 menu if your system does not support both 32-bit and 64-bit kernels.
1600
1601 config 32BIT
1602 bool "32-bit kernel"
1603 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1604 select TRAD_SIGNALS
1605 help
1606 Select this option if you want to build a 32-bit kernel.
1607 config 64BIT
1608 bool "64-bit kernel"
1609 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1610 select HAVE_SYSCALL_WRAPPERS
1611 help
1612 Select this option if you want to build a 64-bit kernel.
1613
1614 endchoice
1615
1616 choice
1617 prompt "Kernel page size"
1618 default PAGE_SIZE_4KB
1619
1620 config PAGE_SIZE_4KB
1621 bool "4kB"
1622 depends on !CPU_LOONGSON2
1623 help
1624 This option select the standard 4kB Linux page size. On some
1625 R3000-family processors this is the only available page size. Using
1626 4kB page size will minimize memory consumption and is therefore
1627 recommended for low memory systems.
1628
1629 config PAGE_SIZE_8KB
1630 bool "8kB"
1631 depends on (EXPERIMENTAL && CPU_R8000) || CPU_CAVIUM_OCTEON
1632 help
1633 Using 8kB page size will result in higher performance kernel at
1634 the price of higher memory consumption. This option is available
1635 only on R8000 and cnMIPS processors. Note that you will need a
1636 suitable Linux distribution to support this.
1637
1638 config PAGE_SIZE_16KB
1639 bool "16kB"
1640 depends on !CPU_R3000 && !CPU_TX39XX
1641 help
1642 Using 16kB page size will result in higher performance kernel at
1643 the price of higher memory consumption. This option is available on
1644 all non-R3000 family processors. Note that you will need a suitable
1645 Linux distribution to support this.
1646
1647 config PAGE_SIZE_32KB
1648 bool "32kB"
1649 depends on CPU_CAVIUM_OCTEON
1650 help
1651 Using 32kB page size will result in higher performance kernel at
1652 the price of higher memory consumption. This option is available
1653 only on cnMIPS cores. Note that you will need a suitable Linux
1654 distribution to support this.
1655
1656 config PAGE_SIZE_64KB
1657 bool "64kB"
1658 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1659 help
1660 Using 64kB page size will result in higher performance kernel at
1661 the price of higher memory consumption. This option is available on
1662 all non-R3000 family processor. Not that at the time of this
1663 writing this option is still high experimental.
1664
1665 endchoice
1666
1667 config BOARD_SCACHE
1668 bool
1669
1670 config IP22_CPU_SCACHE
1671 bool
1672 select BOARD_SCACHE
1673
1674 #
1675 # Support for a MIPS32 / MIPS64 style S-caches
1676 #
1677 config MIPS_CPU_SCACHE
1678 bool
1679 select BOARD_SCACHE
1680
1681 config R5000_CPU_SCACHE
1682 bool
1683 select BOARD_SCACHE
1684
1685 config RM7000_CPU_SCACHE
1686 bool
1687 select BOARD_SCACHE
1688
1689 config SIBYTE_DMA_PAGEOPS
1690 bool "Use DMA to clear/copy pages"
1691 depends on CPU_SB1
1692 help
1693 Instead of using the CPU to zero and copy pages, use a Data Mover
1694 channel. These DMA channels are otherwise unused by the standard
1695 SiByte Linux port. Seems to give a small performance benefit.
1696
1697 config CPU_HAS_PREFETCH
1698 bool
1699
1700 choice
1701 prompt "MIPS MT options"
1702
1703 config MIPS_MT_DISABLED
1704 bool "Disable multithreading support."
1705 help
1706 Use this option if your workload can't take advantage of
1707 MIPS hardware multithreading support. On systems that don't have
1708 the option of an MT-enabled processor this option will be the only
1709 option in this menu.
1710
1711 config MIPS_MT_SMP
1712 bool "Use 1 TC on each available VPE for SMP"
1713 depends on SYS_SUPPORTS_MULTITHREADING
1714 select CPU_MIPSR2_IRQ_VI
1715 select CPU_MIPSR2_IRQ_EI
1716 select MIPS_MT
1717 select NR_CPUS_DEFAULT_2
1718 select SMP
1719 select SYS_SUPPORTS_SCHED_SMT if SMP
1720 select SYS_SUPPORTS_SMP
1721 select SMP_UP
1722 help
1723 This is a kernel model which is known a VSMP but lately has been
1724 marketesed into SMVP.
1725 Virtual SMP uses the processor's VPEs to implement virtual
1726 processors. In currently available configuration of the 34K processor
1727 this allows for a dual processor. Both processors will share the same
1728 primary caches; each will obtain the half of the TLB for it's own
1729 exclusive use. For a layman this model can be described as similar to
1730 what Intel calls Hyperthreading.
1731
1732 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1733
1734 config MIPS_MT_SMTC
1735 bool "SMTC: Use all TCs on all VPEs for SMP"
1736 depends on CPU_MIPS32_R2
1737 #depends on CPU_MIPS64_R2 # once there is hardware ...
1738 depends on SYS_SUPPORTS_MULTITHREADING
1739 select CPU_MIPSR2_IRQ_VI
1740 select CPU_MIPSR2_IRQ_EI
1741 select MIPS_MT
1742 select NR_CPUS_DEFAULT_8
1743 select SMP
1744 select SYS_SUPPORTS_SMP
1745 select SMP_UP
1746 help
1747 This is a kernel model which is known a SMTC or lately has been
1748 marketesed into SMVP.
1749 is presenting the available TC's of the core as processors to Linux.
1750 On currently available 34K processors this means a Linux system will
1751 see up to 5 processors. The implementation of the SMTC kernel differs
1752 significantly from VSMP and cannot efficiently coexist in the same
1753 kernel binary so the choice between VSMP and SMTC is a compile time
1754 decision.
1755
1756 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1757
1758 endchoice
1759
1760 config MIPS_MT
1761 bool
1762
1763 config SCHED_SMT
1764 bool "SMT (multithreading) scheduler support"
1765 depends on SYS_SUPPORTS_SCHED_SMT
1766 default n
1767 help
1768 SMT scheduler support improves the CPU scheduler's decision making
1769 when dealing with MIPS MT enabled cores at a cost of slightly
1770 increased overhead in some places. If unsure say N here.
1771
1772 config SYS_SUPPORTS_SCHED_SMT
1773 bool
1774
1775
1776 config SYS_SUPPORTS_MULTITHREADING
1777 bool
1778
1779 config MIPS_MT_FPAFF
1780 bool "Dynamic FPU affinity for FP-intensive threads"
1781 default y
1782 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1783
1784 config MIPS_VPE_LOADER
1785 bool "VPE loader support."
1786 depends on SYS_SUPPORTS_MULTITHREADING
1787 select CPU_MIPSR2_IRQ_VI
1788 select CPU_MIPSR2_IRQ_EI
1789 select MIPS_MT
1790 help
1791 Includes a loader for loading an elf relocatable object
1792 onto another VPE and running it.
1793
1794 config MIPS_MT_SMTC_IM_BACKSTOP
1795 bool "Use per-TC register bits as backstop for inhibited IM bits"
1796 depends on MIPS_MT_SMTC
1797 default n
1798 help
1799 To support multiple TC microthreads acting as "CPUs" within
1800 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1801 during interrupt handling. To support legacy drivers and interrupt
1802 controller management code, SMTC has a "backstop" to track and
1803 if necessary restore the interrupt mask. This has some performance
1804 impact on interrupt service overhead.
1805
1806 config MIPS_MT_SMTC_IRQAFF
1807 bool "Support IRQ affinity API"
1808 depends on MIPS_MT_SMTC
1809 default n
1810 help
1811 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1812 for SMTC Linux kernel. Requires platform support, of which
1813 an example can be found in the MIPS kernel i8259 and Malta
1814 platform code. Adds some overhead to interrupt dispatch, and
1815 should be used only if you know what you are doing.
1816
1817 config MIPS_VPE_LOADER_TOM
1818 bool "Load VPE program into memory hidden from linux"
1819 depends on MIPS_VPE_LOADER
1820 default y
1821 help
1822 The loader can use memory that is present but has been hidden from
1823 Linux using the kernel command line option "mem=xxMB". It's up to
1824 you to ensure the amount you put in the option and the space your
1825 program requires is less or equal to the amount physically present.
1826
1827 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1828 config MIPS_VPE_APSP_API
1829 bool "Enable support for AP/SP API (RTLX)"
1830 depends on MIPS_VPE_LOADER
1831 help
1832
1833 config MIPS_APSP_KSPD
1834 bool "Enable KSPD"
1835 depends on MIPS_VPE_APSP_API
1836 default y
1837 help
1838 KSPD is a kernel daemon that accepts syscall requests from the SP
1839 side, actions them and returns the results. It also handles the
1840 "exit" syscall notifying other kernel modules the SP program is
1841 exiting. You probably want to say yes here.
1842
1843 config MIPS_CMP
1844 bool "MIPS CMP framework support"
1845 depends on SYS_SUPPORTS_MIPS_CMP
1846 select SYNC_R4K
1847 select SYS_SUPPORTS_SMP
1848 select SYS_SUPPORTS_SCHED_SMT if SMP
1849 select WEAK_ORDERING
1850 default n
1851 help
1852 This is a placeholder option for the GCMP work. It will need to
1853 be handled differently...
1854
1855 config SB1_PASS_1_WORKAROUNDS
1856 bool
1857 depends on CPU_SB1_PASS_1
1858 default y
1859
1860 config SB1_PASS_2_WORKAROUNDS
1861 bool
1862 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1863 default y
1864
1865 config SB1_PASS_2_1_WORKAROUNDS
1866 bool
1867 depends on CPU_SB1 && CPU_SB1_PASS_2
1868 default y
1869
1870 config 64BIT_PHYS_ADDR
1871 bool
1872
1873 config ARCH_PHYS_ADDR_T_64BIT
1874 def_bool 64BIT_PHYS_ADDR
1875
1876 config CPU_HAS_SMARTMIPS
1877 depends on SYS_SUPPORTS_SMARTMIPS
1878 bool "Support for the SmartMIPS ASE"
1879 help
1880 SmartMIPS is a extension of the MIPS32 architecture aimed at
1881 increased security at both hardware and software level for
1882 smartcards. Enabling this option will allow proper use of the
1883 SmartMIPS instructions by Linux applications. However a kernel with
1884 this option will not work on a MIPS core without SmartMIPS core. If
1885 you don't know you probably don't have SmartMIPS and should say N
1886 here.
1887
1888 config CPU_HAS_WB
1889 bool
1890
1891 #
1892 # Vectored interrupt mode is an R2 feature
1893 #
1894 config CPU_MIPSR2_IRQ_VI
1895 bool
1896
1897 #
1898 # Extended interrupt mode is an R2 feature
1899 #
1900 config CPU_MIPSR2_IRQ_EI
1901 bool
1902
1903 config CPU_HAS_SYNC
1904 bool
1905 depends on !CPU_R3000
1906 default y
1907
1908 config GENERIC_CLOCKEVENTS_BROADCAST
1909 bool
1910
1911 #
1912 # CPU non-features
1913 #
1914 config CPU_DADDI_WORKAROUNDS
1915 bool
1916
1917 config CPU_R4000_WORKAROUNDS
1918 bool
1919 select CPU_R4400_WORKAROUNDS
1920
1921 config CPU_R4400_WORKAROUNDS
1922 bool
1923
1924 #
1925 # Use the generic interrupt handling code in kernel/irq/:
1926 #
1927 config GENERIC_HARDIRQS
1928 bool
1929 default y
1930
1931 config GENERIC_IRQ_PROBE
1932 bool
1933 default y
1934
1935 config IRQ_PER_CPU
1936 bool
1937
1938 #
1939 # - Highmem only makes sense for the 32-bit kernel.
1940 # - The current highmem code will only work properly on physically indexed
1941 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1942 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1943 # moment we protect the user and offer the highmem option only on machines
1944 # where it's known to be safe. This will not offer highmem on a few systems
1945 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1946 # indexed CPUs but we're playing safe.
1947 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1948 # know they might have memory configurations that could make use of highmem
1949 # support.
1950 #
1951 config HIGHMEM
1952 bool "High Memory Support"
1953 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1954
1955 config CPU_SUPPORTS_HIGHMEM
1956 bool
1957
1958 config SYS_SUPPORTS_HIGHMEM
1959 bool
1960
1961 config SYS_SUPPORTS_SMARTMIPS
1962 bool
1963
1964 config ARCH_FLATMEM_ENABLE
1965 def_bool y
1966 depends on !NUMA && !CPU_LOONGSON2
1967
1968 config ARCH_DISCONTIGMEM_ENABLE
1969 bool
1970 default y if SGI_IP27
1971 help
1972 Say Y to support efficient handling of discontiguous physical memory,
1973 for architectures which are either NUMA (Non-Uniform Memory Access)
1974 or have huge holes in the physical address space for other reasons.
1975 See <file:Documentation/vm/numa> for more.
1976
1977 config ARCH_POPULATES_NODE_MAP
1978 def_bool y
1979
1980 config ARCH_SPARSEMEM_ENABLE
1981 bool
1982 select SPARSEMEM_STATIC
1983
1984 config NUMA
1985 bool "NUMA Support"
1986 depends on SYS_SUPPORTS_NUMA
1987 help
1988 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1989 Access). This option improves performance on systems with more
1990 than two nodes; on two node systems it is generally better to
1991 leave it disabled; on single node systems disable this option
1992 disabled.
1993
1994 config SYS_SUPPORTS_NUMA
1995 bool
1996
1997 config NODES_SHIFT
1998 int
1999 default "6"
2000 depends on NEED_MULTIPLE_NODES
2001
2002 config HW_PERF_EVENTS
2003 bool "Enable hardware performance counter support for perf events"
2004 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && CPU_MIPS32
2005 default y
2006 help
2007 Enable hardware performance counter support for perf events. If
2008 disabled, perf events will use software events only.
2009
2010 source "mm/Kconfig"
2011
2012 config SMP
2013 bool "Multi-Processing support"
2014 depends on SYS_SUPPORTS_SMP
2015 select IRQ_PER_CPU
2016 select USE_GENERIC_SMP_HELPERS
2017 help
2018 This enables support for systems with more than one CPU. If you have
2019 a system with only one CPU, like most personal computers, say N. If
2020 you have a system with more than one CPU, say Y.
2021
2022 If you say N here, the kernel will run on single and multiprocessor
2023 machines, but will use only one CPU of a multiprocessor machine. If
2024 you say Y here, the kernel will run on many, but not all,
2025 singleprocessor machines. On a singleprocessor machine, the kernel
2026 will run faster if you say N here.
2027
2028 People using multiprocessor machines who say Y here should also say
2029 Y to "Enhanced Real Time Clock Support", below.
2030
2031 See also the SMP-HOWTO available at
2032 <http://www.tldp.org/docs.html#howto>.
2033
2034 If you don't know what to do here, say N.
2035
2036 config SMP_UP
2037 bool
2038
2039 config SYS_SUPPORTS_MIPS_CMP
2040 bool
2041
2042 config SYS_SUPPORTS_SMP
2043 bool
2044
2045 config NR_CPUS_DEFAULT_1
2046 bool
2047
2048 config NR_CPUS_DEFAULT_2
2049 bool
2050
2051 config NR_CPUS_DEFAULT_4
2052 bool
2053
2054 config NR_CPUS_DEFAULT_8
2055 bool
2056
2057 config NR_CPUS_DEFAULT_16
2058 bool
2059
2060 config NR_CPUS_DEFAULT_32
2061 bool
2062
2063 config NR_CPUS_DEFAULT_64
2064 bool
2065
2066 config NR_CPUS
2067 int "Maximum number of CPUs (2-64)"
2068 range 1 64 if NR_CPUS_DEFAULT_1
2069 depends on SMP
2070 default "1" if NR_CPUS_DEFAULT_1
2071 default "2" if NR_CPUS_DEFAULT_2
2072 default "4" if NR_CPUS_DEFAULT_4
2073 default "8" if NR_CPUS_DEFAULT_8
2074 default "16" if NR_CPUS_DEFAULT_16
2075 default "32" if NR_CPUS_DEFAULT_32
2076 default "64" if NR_CPUS_DEFAULT_64
2077 help
2078 This allows you to specify the maximum number of CPUs which this
2079 kernel will support. The maximum supported value is 32 for 32-bit
2080 kernel and 64 for 64-bit kernels; the minimum value which makes
2081 sense is 1 for Qemu (useful only for kernel debugging purposes)
2082 and 2 for all others.
2083
2084 This is purely to save memory - each supported CPU adds
2085 approximately eight kilobytes to the kernel image. For best
2086 performance should round up your number of processors to the next
2087 power of two.
2088
2089 source "kernel/time/Kconfig"
2090
2091 #
2092 # Timer Interrupt Frequency Configuration
2093 #
2094
2095 choice
2096 prompt "Timer frequency"
2097 default HZ_250
2098 help
2099 Allows the configuration of the timer frequency.
2100
2101 config HZ_48
2102 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2103
2104 config HZ_100
2105 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2106
2107 config HZ_128
2108 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2109
2110 config HZ_250
2111 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2112
2113 config HZ_256
2114 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2115
2116 config HZ_1000
2117 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2118
2119 config HZ_1024
2120 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2121
2122 endchoice
2123
2124 config SYS_SUPPORTS_48HZ
2125 bool
2126
2127 config SYS_SUPPORTS_100HZ
2128 bool
2129
2130 config SYS_SUPPORTS_128HZ
2131 bool
2132
2133 config SYS_SUPPORTS_250HZ
2134 bool
2135
2136 config SYS_SUPPORTS_256HZ
2137 bool
2138
2139 config SYS_SUPPORTS_1000HZ
2140 bool
2141
2142 config SYS_SUPPORTS_1024HZ
2143 bool
2144
2145 config SYS_SUPPORTS_ARBIT_HZ
2146 bool
2147 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2148 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2149 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2150 !SYS_SUPPORTS_1024HZ
2151
2152 config HZ
2153 int
2154 default 48 if HZ_48
2155 default 100 if HZ_100
2156 default 128 if HZ_128
2157 default 250 if HZ_250
2158 default 256 if HZ_256
2159 default 1000 if HZ_1000
2160 default 1024 if HZ_1024
2161
2162 source "kernel/Kconfig.preempt"
2163
2164 config MIPS_INSANE_LARGE
2165 bool "Support for large 64-bit configurations"
2166 depends on CPU_R10000 && 64BIT
2167 help
2168 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
2169 previous 64-bit processors which only supported 40 bit / 1TB. If you
2170 need processes of more than 1TB virtual address space, say Y here.
2171 This will result in additional memory usage, so it is not
2172 recommended for normal users.
2173
2174 config KEXEC
2175 bool "Kexec system call (EXPERIMENTAL)"
2176 depends on EXPERIMENTAL
2177 help
2178 kexec is a system call that implements the ability to shutdown your
2179 current kernel, and to start another kernel. It is like a reboot
2180 but it is independent of the system firmware. And like a reboot
2181 you can start any kernel with it, not just Linux.
2182
2183 The name comes from the similarity to the exec system call.
2184
2185 It is an ongoing process to be certain the hardware in a machine
2186 is properly shutdown, so do not be surprised if this code does not
2187 initially work for you. It may help to enable device hotplugging
2188 support. As of this writing the exact hardware interface is
2189 strongly in flux, so no good recommendation can be made.
2190
2191 config SECCOMP
2192 bool "Enable seccomp to safely compute untrusted bytecode"
2193 depends on PROC_FS
2194 default y
2195 help
2196 This kernel feature is useful for number crunching applications
2197 that may need to compute untrusted bytecode during their
2198 execution. By using pipes or other transports made available to
2199 the process as file descriptors supporting the read/write
2200 syscalls, it's possible to isolate those applications in
2201 their own address space using seccomp. Once seccomp is
2202 enabled via /proc/<pid>/seccomp, it cannot be disabled
2203 and the task is only allowed to execute a few safe syscalls
2204 defined by each seccomp mode.
2205
2206 If unsure, say Y. Only embedded should say N here.
2207
2208 config USE_OF
2209 bool "Flattened Device Tree support"
2210 select OF
2211 select OF_FLATTREE
2212 help
2213 Include support for flattened device tree machine descriptions.
2214
2215 endmenu
2216
2217 config LOCKDEP_SUPPORT
2218 bool
2219 default y
2220
2221 config STACKTRACE_SUPPORT
2222 bool
2223 default y
2224
2225 source "init/Kconfig"
2226
2227 source "kernel/Kconfig.freezer"
2228
2229 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2230
2231 config HW_HAS_EISA
2232 bool
2233 config HW_HAS_PCI
2234 bool
2235
2236 config PCI
2237 bool "Support for PCI controller"
2238 depends on HW_HAS_PCI
2239 select PCI_DOMAINS
2240 help
2241 Find out whether you have a PCI motherboard. PCI is the name of a
2242 bus system, i.e. the way the CPU talks to the other stuff inside
2243 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2244 say Y, otherwise N.
2245
2246 config PCI_DOMAINS
2247 bool
2248
2249 source "drivers/pci/Kconfig"
2250
2251 #
2252 # ISA support is now enabled via select. Too many systems still have the one
2253 # or other ISA chip on the board that users don't know about so don't expect
2254 # users to choose the right thing ...
2255 #
2256 config ISA
2257 bool
2258
2259 config EISA
2260 bool "EISA support"
2261 depends on HW_HAS_EISA
2262 select ISA
2263 select GENERIC_ISA_DMA
2264 ---help---
2265 The Extended Industry Standard Architecture (EISA) bus was
2266 developed as an open alternative to the IBM MicroChannel bus.
2267
2268 The EISA bus provided some of the features of the IBM MicroChannel
2269 bus while maintaining backward compatibility with cards made for
2270 the older ISA bus. The EISA bus saw limited use between 1988 and
2271 1995 when it was made obsolete by the PCI bus.
2272
2273 Say Y here if you are building a kernel for an EISA-based machine.
2274
2275 Otherwise, say N.
2276
2277 source "drivers/eisa/Kconfig"
2278
2279 config TC
2280 bool "TURBOchannel support"
2281 depends on MACH_DECSTATION
2282 help
2283 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2284 processors. TURBOchannel programming specifications are available
2285 at:
2286 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2287 and:
2288 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2289 Linux driver support status is documented at:
2290 <http://www.linux-mips.org/wiki/DECstation>
2291
2292 #config ACCESSBUS
2293 # bool "Access.Bus support"
2294 # depends on TC
2295
2296 config MMU
2297 bool
2298 default y
2299
2300 config I8253
2301 bool
2302 select MIPS_EXTERNAL_TIMER
2303
2304 config ZONE_DMA32
2305 bool
2306
2307 source "drivers/pcmcia/Kconfig"
2308
2309 source "drivers/pci/hotplug/Kconfig"
2310
2311 endmenu
2312
2313 menu "Executable file formats"
2314
2315 source "fs/Kconfig.binfmt"
2316
2317 config TRAD_SIGNALS
2318 bool
2319
2320 config MIPS32_COMPAT
2321 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2322 depends on 64BIT
2323 help
2324 Select this option if you want Linux/MIPS 32-bit binary
2325 compatibility. Since all software available for Linux/MIPS is
2326 currently 32-bit you should say Y here.
2327
2328 config COMPAT
2329 bool
2330 depends on MIPS32_COMPAT
2331 default y
2332
2333 config SYSVIPC_COMPAT
2334 bool
2335 depends on COMPAT && SYSVIPC
2336 default y
2337
2338 config MIPS32_O32
2339 bool "Kernel support for o32 binaries"
2340 depends on MIPS32_COMPAT
2341 help
2342 Select this option if you want to run o32 binaries. These are pure
2343 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2344 existing binaries are in this format.
2345
2346 If unsure, say Y.
2347
2348 config MIPS32_N32
2349 bool "Kernel support for n32 binaries"
2350 depends on MIPS32_COMPAT
2351 help
2352 Select this option if you want to run n32 binaries. These are
2353 64-bit binaries using 32-bit quantities for addressing and certain
2354 data that would normally be 64-bit. They are used in special
2355 cases.
2356
2357 If unsure, say N.
2358
2359 config BINFMT_ELF32
2360 bool
2361 default y if MIPS32_O32 || MIPS32_N32
2362
2363 endmenu
2364
2365 menu "Power management options"
2366
2367 config ARCH_HIBERNATION_POSSIBLE
2368 def_bool y
2369 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2370
2371 config ARCH_SUSPEND_POSSIBLE
2372 def_bool y
2373 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2374
2375 source "kernel/power/Kconfig"
2376
2377 endmenu
2378
2379 source "arch/mips/kernel/cpufreq/Kconfig"
2380
2381 source "net/Kconfig"
2382
2383 source "drivers/Kconfig"
2384
2385 source "fs/Kconfig"
2386
2387 source "arch/mips/Kconfig.debug"
2388
2389 source "security/Kconfig"
2390
2391 source "crypto/Kconfig"
2392
2393 source "lib/Kconfig"
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