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[MIPS] Tinker with constraints in <asm/atomic.h> to fix build error.
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1config MIPS
2 bool
3 default y
4 select HAVE_IDE
5 select HAVE_OPROFILE
6 # Horrible source of confusion. Die, die, die ...
7 select EMBEDDED
8 select RTC_LIB
9
10mainmenu "Linux/MIPS Kernel Configuration"
11
12menu "Machine selection"
13
14config ZONE_DMA
15 bool
16
17choice
18 prompt "System type"
19 default SGI_IP22
20
21config MACH_ALCHEMY
22 bool "Alchemy processor based machines"
23
24config BASLER_EXCITE
25 bool "Basler eXcite smart camera"
26 select CEVT_R4K
27 select CSRC_R4K
28 select DMA_COHERENT
29 select HW_HAS_PCI
30 select IRQ_CPU
31 select IRQ_CPU_RM7K
32 select IRQ_CPU_RM9K
33 select MIPS_RM9122
34 select SYS_HAS_CPU_RM9000
35 select SYS_SUPPORTS_32BIT_KERNEL
36 select SYS_SUPPORTS_BIG_ENDIAN
37 select SYS_SUPPORTS_KGDB
38 help
39 The eXcite is a smart camera platform manufactured by
40 Basler Vision Technologies AG.
41
42config BCM47XX
43 bool "BCM47XX based boards"
44 select CEVT_R4K
45 select CSRC_R4K
46 select DMA_NONCOHERENT
47 select HW_HAS_PCI
48 select IRQ_CPU
49 select SYS_HAS_CPU_MIPS32_R1
50 select SYS_SUPPORTS_32BIT_KERNEL
51 select SYS_SUPPORTS_LITTLE_ENDIAN
52 select SSB
53 select SSB_DRIVER_MIPS
54 select SSB_DRIVER_EXTIF
55 select SSB_PCICORE_HOSTMODE if PCI
56 select GENERIC_GPIO
57 select SYS_HAS_EARLY_PRINTK
58 select CFE
59 help
60 Support for BCM47XX based boards
61
62config MIPS_COBALT
63 bool "Cobalt Server"
64 select CEVT_R4K
65 select CSRC_R4K
66 select CEVT_GT641XX
67 select DMA_NONCOHERENT
68 select HW_HAS_PCI
69 select I8253
70 select I8259
71 select IRQ_CPU
72 select IRQ_GT641XX
73 select PCI_GT64XXX_PCI0
74 select SYS_HAS_CPU_NEVADA
75 select SYS_HAS_EARLY_PRINTK
76 select SYS_SUPPORTS_32BIT_KERNEL
77 select SYS_SUPPORTS_64BIT_KERNEL
78 select SYS_SUPPORTS_LITTLE_ENDIAN
79 select GENERIC_HARDIRQS_NO__DO_IRQ
80
81config MACH_DECSTATION
82 bool "DECstations"
83 select BOOT_ELF32
84 select CEVT_DS1287
85 select CEVT_R4K
86 select CSRC_IOASIC
87 select CSRC_R4K
88 select CPU_DADDI_WORKAROUNDS if 64BIT
89 select CPU_R4000_WORKAROUNDS if 64BIT
90 select CPU_R4400_WORKAROUNDS if 64BIT
91 select DMA_NONCOHERENT
92 select NO_IOPORT
93 select IRQ_CPU
94 select SYS_HAS_CPU_R3000
95 select SYS_HAS_CPU_R4X00
96 select SYS_SUPPORTS_32BIT_KERNEL
97 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
98 select SYS_SUPPORTS_LITTLE_ENDIAN
99 select SYS_SUPPORTS_128HZ
100 select SYS_SUPPORTS_256HZ
101 select SYS_SUPPORTS_1024HZ
102 help
103 This enables support for DEC's MIPS based workstations. For details
104 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
105 DECstation porting pages on <http://decstation.unix-ag.org/>.
106
107 If you have one of the following DECstation Models you definitely
108 want to choose R4xx0 for the CPU Type:
109
110 DECstation 5000/50
111 DECstation 5000/150
112 DECstation 5000/260
113 DECsystem 5900/260
114
115 otherwise choose R3000.
116
117config MACH_JAZZ
118 bool "Jazz family of machines"
119 select ARC
120 select ARC32
121 select ARCH_MAY_HAVE_PC_FDC
122 select CEVT_R4K
123 select CSRC_R4K
124 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
125 select GENERIC_ISA_DMA
126 select IRQ_CPU
127 select I8253
128 select I8259
129 select ISA
130 select SYS_HAS_CPU_R4X00
131 select SYS_SUPPORTS_32BIT_KERNEL
132 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
133 select SYS_SUPPORTS_100HZ
134 select GENERIC_HARDIRQS_NO__DO_IRQ
135 help
136 This a family of machines based on the MIPS R4030 chipset which was
137 used by several vendors to build RISC/os and Windows NT workstations.
138 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millenium and
139 Olivetti M700-10 workstations.
140
141config LASAT
142 bool "LASAT Networks platforms"
143 select CEVT_R4K
144 select CSRC_R4K
145 select DMA_NONCOHERENT
146 select SYS_HAS_EARLY_PRINTK
147 select HW_HAS_PCI
148 select IRQ_CPU
149 select PCI_GT64XXX_PCI0
150 select MIPS_NILE4
151 select R5000_CPU_SCACHE
152 select SYS_HAS_CPU_R5000
153 select SYS_SUPPORTS_32BIT_KERNEL
154 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
155 select SYS_SUPPORTS_LITTLE_ENDIAN
156 select GENERIC_HARDIRQS_NO__DO_IRQ
157
158config LEMOTE_FULONG
159 bool "Lemote Fulong mini-PC"
160 select ARCH_SPARSEMEM_ENABLE
161 select CEVT_R4K
162 select CSRC_R4K
163 select SYS_HAS_CPU_LOONGSON2
164 select DMA_NONCOHERENT
165 select BOOT_ELF32
166 select BOARD_SCACHE
167 select HAVE_STD_PC_SERIAL_PORT
168 select HW_HAS_PCI
169 select I8259
170 select ISA
171 select IRQ_CPU
172 select SYS_SUPPORTS_32BIT_KERNEL
173 select SYS_SUPPORTS_64BIT_KERNEL
174 select SYS_SUPPORTS_LITTLE_ENDIAN
175 select SYS_SUPPORTS_HIGHMEM
176 select SYS_HAS_EARLY_PRINTK
177 select GENERIC_HARDIRQS_NO__DO_IRQ
178 select GENERIC_ISA_DMA_SUPPORT_BROKEN
179 select CPU_HAS_WB
180 help
181 Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
182 an FPGA northbridge
183
184config MIPS_MALTA
185 bool "MIPS Malta board"
186 select ARCH_MAY_HAVE_PC_FDC
187 select BOOT_ELF32
188 select BOOT_RAW
189 select CEVT_R4K
190 select CSRC_R4K
191 select DMA_NONCOHERENT
192 select GENERIC_ISA_DMA
193 select IRQ_CPU
194 select IRQ_GIC
195 select HW_HAS_PCI
196 select I8253
197 select I8259
198 select MIPS_BOARDS_GEN
199 select MIPS_BONITO64
200 select MIPS_CPU_SCACHE
201 select PCI_GT64XXX_PCI0
202 select MIPS_MSC
203 select SWAP_IO_SPACE
204 select SYS_HAS_CPU_MIPS32_R1
205 select SYS_HAS_CPU_MIPS32_R2
206 select SYS_HAS_CPU_MIPS64_R1
207 select SYS_HAS_CPU_NEVADA
208 select SYS_HAS_CPU_RM7000
209 select SYS_HAS_EARLY_PRINTK
210 select SYS_SUPPORTS_32BIT_KERNEL
211 select SYS_SUPPORTS_64BIT_KERNEL
212 select SYS_SUPPORTS_BIG_ENDIAN
213 select SYS_SUPPORTS_LITTLE_ENDIAN
214 select SYS_SUPPORTS_MULTITHREADING
215 select SYS_SUPPORTS_SMARTMIPS
216 help
217 This enables support for the MIPS Technologies Malta evaluation
218 board.
219
220config MIPS_SIM
221 bool 'MIPS simulator (MIPSsim)'
222 select CEVT_R4K
223 select CSRC_R4K
224 select DMA_NONCOHERENT
225 select SYS_HAS_EARLY_PRINTK
226 select IRQ_CPU
227 select BOOT_RAW
228 select SYS_HAS_CPU_MIPS32_R1
229 select SYS_HAS_CPU_MIPS32_R2
230 select SYS_HAS_EARLY_PRINTK
231 select SYS_SUPPORTS_32BIT_KERNEL
232 select SYS_SUPPORTS_BIG_ENDIAN
233 select SYS_SUPPORTS_MULTITHREADING
234 select SYS_SUPPORTS_LITTLE_ENDIAN
235 help
236 This option enables support for MIPS Technologies MIPSsim software
237 emulator.
238
239config MARKEINS
240 bool "NEC EMMA2RH Mark-eins"
241 select CEVT_R4K
242 select CSRC_R4K
243 select DMA_NONCOHERENT
244 select HW_HAS_PCI
245 select IRQ_CPU
246 select SWAP_IO_SPACE
247 select SYS_SUPPORTS_32BIT_KERNEL
248 select SYS_SUPPORTS_BIG_ENDIAN
249 select SYS_SUPPORTS_LITTLE_ENDIAN
250 select SYS_HAS_CPU_R5000
251 help
252 This enables support for the R5432-based NEC Mark-eins
253 boards with R5500 CPU.
254
255config MACH_VR41XX
256 bool "NEC VR4100 series based machines"
257 select CEVT_R4K
258 select CSRC_R4K
259 select SYS_HAS_CPU_VR41XX
260 select GENERIC_HARDIRQS_NO__DO_IRQ
261
262config PNX8550_JBS
263 bool "NXP PNX8550 based JBS board"
264 select PNX8550
265 select SYS_SUPPORTS_LITTLE_ENDIAN
266
267config PNX8550_STB810
268 bool "NXP PNX8550 based STB810 board"
269 select PNX8550
270 select SYS_SUPPORTS_LITTLE_ENDIAN
271
272config PMC_MSP
273 bool "PMC-Sierra MSP chipsets"
274 depends on EXPERIMENTAL
275 select DMA_NONCOHERENT
276 select SWAP_IO_SPACE
277 select NO_EXCEPT_FILL
278 select BOOT_RAW
279 select SYS_HAS_CPU_MIPS32_R1
280 select SYS_HAS_CPU_MIPS32_R2
281 select SYS_SUPPORTS_32BIT_KERNEL
282 select SYS_SUPPORTS_BIG_ENDIAN
283 select SYS_SUPPORTS_KGDB
284 select IRQ_CPU
285 select SERIAL_8250
286 select SERIAL_8250_CONSOLE
287 help
288 This adds support for the PMC-Sierra family of Multi-Service
289 Processor System-On-A-Chips. These parts include a number
290 of integrated peripherals, interfaces and DSPs in addition to
291 a variety of MIPS cores.
292
293config PMC_YOSEMITE
294 bool "PMC-Sierra Yosemite eval board"
295 select CEVT_R4K
296 select CSRC_R4K
297 select DMA_COHERENT
298 select HW_HAS_PCI
299 select IRQ_CPU
300 select IRQ_CPU_RM7K
301 select IRQ_CPU_RM9K
302 select SWAP_IO_SPACE
303 select SYS_HAS_CPU_RM9000
304 select SYS_HAS_EARLY_PRINTK
305 select SYS_SUPPORTS_32BIT_KERNEL
306 select SYS_SUPPORTS_64BIT_KERNEL
307 select SYS_SUPPORTS_BIG_ENDIAN
308 select SYS_SUPPORTS_HIGHMEM
309 select SYS_SUPPORTS_KGDB
310 select SYS_SUPPORTS_SMP
311 help
312 Yosemite is an evaluation board for the RM9000x2 processor
313 manufactured by PMC-Sierra.
314
315config SGI_IP22
316 bool "SGI IP22 (Indy/Indigo2)"
317 select ARC
318 select ARC32
319 select BOOT_ELF32
320 select CEVT_R4K
321 select CSRC_R4K
322 select DEFAULT_SGI_PARTITION
323 select DMA_NONCOHERENT
324 select HW_HAS_EISA
325 select I8253
326 select I8259
327 select IP22_CPU_SCACHE
328 select IRQ_CPU
329 select GENERIC_ISA_DMA_SUPPORT_BROKEN
330 select SGI_HAS_DS1286
331 select SGI_HAS_I8042
332 select SGI_HAS_INDYDOG
333 select SGI_HAS_SEEQ
334 select SGI_HAS_WD93
335 select SGI_HAS_ZILOG
336 select SWAP_IO_SPACE
337 select SYS_HAS_CPU_R4X00
338 select SYS_HAS_CPU_R5000
339 select SYS_HAS_EARLY_PRINTK
340 select SYS_SUPPORTS_32BIT_KERNEL
341 select SYS_SUPPORTS_64BIT_KERNEL
342 select SYS_SUPPORTS_BIG_ENDIAN
343 help
344 This are the SGI Indy, Challenge S and Indigo2, as well as certain
345 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
346 that runs on these, say Y here.
347
348config SGI_IP27
349 bool "SGI IP27 (Origin200/2000)"
350 select ARC
351 select ARC64
352 select BOOT_ELF64
353 select DEFAULT_SGI_PARTITION
354 select DMA_IP27
355 select SYS_HAS_EARLY_PRINTK
356 select HW_HAS_PCI
357 select NR_CPUS_DEFAULT_64
358 select SYS_HAS_CPU_R10000
359 select SYS_SUPPORTS_64BIT_KERNEL
360 select SYS_SUPPORTS_BIG_ENDIAN
361 select SYS_SUPPORTS_KGDB
362 select SYS_SUPPORTS_NUMA
363 select SYS_SUPPORTS_SMP
364 select GENERIC_HARDIRQS_NO__DO_IRQ
365 help
366 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
367 workstations. To compile a Linux kernel that runs on these, say Y
368 here.
369
370config SGI_IP28
371 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
372 depends on EXPERIMENTAL
373 select ARC
374 select ARC64
375 select BOOT_ELF64
376 select CEVT_R4K
377 select CSRC_R4K
378 select DEFAULT_SGI_PARTITION
379 select DMA_NONCOHERENT
380 select GENERIC_ISA_DMA_SUPPORT_BROKEN
381 select IRQ_CPU
382 select HW_HAS_EISA
383 select I8253
384 select I8259
385 select SGI_HAS_DS1286
386 select SGI_HAS_I8042
387 select SGI_HAS_INDYDOG
388 select SGI_HAS_HAL2
389 select SGI_HAS_HAL2
390 select SGI_HAS_SEEQ
391 select SGI_HAS_WD93
392 select SGI_HAS_ZILOG
393 select SWAP_IO_SPACE
394 select SYS_HAS_CPU_R10000
395 select SYS_HAS_EARLY_PRINTK
396 select SYS_SUPPORTS_64BIT_KERNEL
397 select SYS_SUPPORTS_BIG_ENDIAN
398 help
399 This is the SGI Indigo2 with R10000 processor. To compile a Linux
400 kernel that runs on these, say Y here.
401
402config SGI_IP32
403 bool "SGI IP32 (O2)"
404 select ARC
405 select ARC32
406 select BOOT_ELF32
407 select CEVT_R4K
408 select CSRC_R4K
409 select DMA_NONCOHERENT
410 select HW_HAS_PCI
411 select IRQ_CPU
412 select R5000_CPU_SCACHE
413 select RM7000_CPU_SCACHE
414 select SYS_HAS_CPU_R5000
415 select SYS_HAS_CPU_R10000 if BROKEN
416 select SYS_HAS_CPU_RM7000
417 select SYS_HAS_CPU_NEVADA
418 select SYS_SUPPORTS_64BIT_KERNEL
419 select SYS_SUPPORTS_BIG_ENDIAN
420 help
421 If you want this kernel to run on SGI O2 workstation, say Y here.
422
423config SIBYTE_CRHINE
424 bool "Sibyte BCM91120C-CRhine"
425 depends on EXPERIMENTAL
426 select BOOT_ELF32
427 select DMA_COHERENT
428 select SIBYTE_BCM1120
429 select SWAP_IO_SPACE
430 select SYS_HAS_CPU_SB1
431 select SYS_SUPPORTS_BIG_ENDIAN
432 select SYS_SUPPORTS_LITTLE_ENDIAN
433
434config SIBYTE_CARMEL
435 bool "Sibyte BCM91120x-Carmel"
436 depends on EXPERIMENTAL
437 select BOOT_ELF32
438 select DMA_COHERENT
439 select SIBYTE_BCM1120
440 select SWAP_IO_SPACE
441 select SYS_HAS_CPU_SB1
442 select SYS_SUPPORTS_BIG_ENDIAN
443 select SYS_SUPPORTS_LITTLE_ENDIAN
444
445config SIBYTE_CRHONE
446 bool "Sibyte BCM91125C-CRhone"
447 depends on EXPERIMENTAL
448 select BOOT_ELF32
449 select DMA_COHERENT
450 select SIBYTE_BCM1125
451 select SWAP_IO_SPACE
452 select SYS_HAS_CPU_SB1
453 select SYS_SUPPORTS_BIG_ENDIAN
454 select SYS_SUPPORTS_HIGHMEM
455 select SYS_SUPPORTS_LITTLE_ENDIAN
456
457config SIBYTE_RHONE
458 bool "Sibyte BCM91125E-Rhone"
459 depends on EXPERIMENTAL
460 select BOOT_ELF32
461 select DMA_COHERENT
462 select SIBYTE_BCM1125H
463 select SWAP_IO_SPACE
464 select SYS_HAS_CPU_SB1
465 select SYS_SUPPORTS_BIG_ENDIAN
466 select SYS_SUPPORTS_LITTLE_ENDIAN
467
468config SIBYTE_SWARM
469 bool "Sibyte BCM91250A-SWARM"
470 select BOOT_ELF32
471 select DMA_COHERENT
472 select NR_CPUS_DEFAULT_2
473 select SIBYTE_SB1250
474 select SWAP_IO_SPACE
475 select SYS_HAS_CPU_SB1
476 select SYS_SUPPORTS_BIG_ENDIAN
477 select SYS_SUPPORTS_HIGHMEM
478 select SYS_SUPPORTS_KGDB
479 select SYS_SUPPORTS_LITTLE_ENDIAN
480 select ZONE_DMA32 if 64BIT
481
482config SIBYTE_LITTLESUR
483 bool "Sibyte BCM91250C2-LittleSur"
484 depends on EXPERIMENTAL
485 select BOOT_ELF32
486 select DMA_COHERENT
487 select NR_CPUS_DEFAULT_2
488 select SIBYTE_SB1250
489 select SWAP_IO_SPACE
490 select SYS_HAS_CPU_SB1
491 select SYS_SUPPORTS_BIG_ENDIAN
492 select SYS_SUPPORTS_HIGHMEM
493 select SYS_SUPPORTS_LITTLE_ENDIAN
494
495config SIBYTE_SENTOSA
496 bool "Sibyte BCM91250E-Sentosa"
497 depends on EXPERIMENTAL
498 select BOOT_ELF32
499 select DMA_COHERENT
500 select NR_CPUS_DEFAULT_2
501 select SIBYTE_SB1250
502 select SWAP_IO_SPACE
503 select SYS_HAS_CPU_SB1
504 select SYS_SUPPORTS_BIG_ENDIAN
505 select SYS_SUPPORTS_LITTLE_ENDIAN
506
507config SIBYTE_BIGSUR
508 bool "Sibyte BCM91480B-BigSur"
509 select BOOT_ELF32
510 select DMA_COHERENT
511 select NR_CPUS_DEFAULT_4
512 select SIBYTE_BCM1x80
513 select SWAP_IO_SPACE
514 select SYS_HAS_CPU_SB1
515 select SYS_SUPPORTS_BIG_ENDIAN
516 select SYS_SUPPORTS_HIGHMEM
517 select SYS_SUPPORTS_LITTLE_ENDIAN
518 select ZONE_DMA32 if 64BIT
519
520config SNI_RM
521 bool "SNI RM200/300/400"
522 select ARC if CPU_LITTLE_ENDIAN
523 select ARC32 if CPU_LITTLE_ENDIAN
524 select SNIPROM if CPU_BIG_ENDIAN
525 select ARCH_MAY_HAVE_PC_FDC
526 select BOOT_ELF32
527 select CEVT_R4K
528 select CSRC_R4K
529 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
530 select DMA_NONCOHERENT
531 select GENERIC_ISA_DMA
532 select HW_HAS_EISA
533 select HW_HAS_PCI
534 select IRQ_CPU
535 select I8253
536 select I8259
537 select ISA
538 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
539 select SYS_HAS_CPU_R4X00
540 select SYS_HAS_CPU_R5000
541 select SYS_HAS_CPU_R10000
542 select R5000_CPU_SCACHE
543 select SYS_HAS_EARLY_PRINTK
544 select SYS_SUPPORTS_32BIT_KERNEL
545 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
546 select SYS_SUPPORTS_BIG_ENDIAN
547 select SYS_SUPPORTS_HIGHMEM
548 select SYS_SUPPORTS_LITTLE_ENDIAN
549 help
550 The SNI RM200/300/400 are MIPS-based machines manufactured by
551 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
552 Technology and now in turn merged with Fujitsu. Say Y here to
553 support this machine type.
554
555config MACH_TX39XX
556 bool "Toshiba TX39 series based machines"
557
558config MACH_TX49XX
559 bool "Toshiba TX49 series based machines"
560
561config WR_PPMC
562 bool "Wind River PPMC board"
563 select CEVT_R4K
564 select CSRC_R4K
565 select IRQ_CPU
566 select BOOT_ELF32
567 select DMA_NONCOHERENT
568 select HW_HAS_PCI
569 select PCI_GT64XXX_PCI0
570 select SWAP_IO_SPACE
571 select SYS_HAS_CPU_MIPS32_R1
572 select SYS_HAS_CPU_MIPS32_R2
573 select SYS_HAS_CPU_MIPS64_R1
574 select SYS_HAS_CPU_NEVADA
575 select SYS_HAS_CPU_RM7000
576 select SYS_SUPPORTS_32BIT_KERNEL
577 select SYS_SUPPORTS_64BIT_KERNEL
578 select SYS_SUPPORTS_BIG_ENDIAN
579 select SYS_SUPPORTS_LITTLE_ENDIAN
580 help
581 This enables support for the Wind River MIPS32 4KC PPMC evaluation
582 board, which is based on GT64120 bridge chip.
583
584endchoice
585
586source "arch/mips/au1000/Kconfig"
587source "arch/mips/basler/excite/Kconfig"
588source "arch/mips/jazz/Kconfig"
589source "arch/mips/lasat/Kconfig"
590source "arch/mips/pmc-sierra/Kconfig"
591source "arch/mips/sgi-ip27/Kconfig"
592source "arch/mips/sibyte/Kconfig"
593source "arch/mips/txx9/Kconfig"
594source "arch/mips/vr41xx/Kconfig"
595
596endmenu
597
598config GENERIC_LOCKBREAK
599 bool
600 default y
601 depends on SMP && PREEMPT
602
603config RWSEM_GENERIC_SPINLOCK
604 bool
605 default y
606
607config RWSEM_XCHGADD_ALGORITHM
608 bool
609
610config ARCH_HAS_ILOG2_U32
611 bool
612 default n
613
614config ARCH_HAS_ILOG2_U64
615 bool
616 default n
617
618config ARCH_SUPPORTS_OPROFILE
619 bool
620 default y if !MIPS_MT_SMTC
621
622config GENERIC_FIND_NEXT_BIT
623 bool
624 default y
625
626config GENERIC_HWEIGHT
627 bool
628 default y
629
630config GENERIC_CALIBRATE_DELAY
631 bool
632 default y
633
634config GENERIC_CLOCKEVENTS
635 bool
636 default y
637
638config GENERIC_TIME
639 bool
640 default y
641
642config GENERIC_CMOS_UPDATE
643 bool
644 default y
645
646config SCHED_NO_NO_OMIT_FRAME_POINTER
647 bool
648 default y
649
650config GENERIC_HARDIRQS_NO__DO_IRQ
651 bool
652 default n
653
654#
655# Select some configuration options automatically based on user selections.
656#
657config ARC
658 bool
659
660config ARCH_MAY_HAVE_PC_FDC
661 bool
662
663config BOOT_RAW
664 bool
665
666config CEVT_BCM1480
667 bool
668
669config CEVT_DS1287
670 bool
671
672config CEVT_GT641XX
673 bool
674
675config CEVT_R4K
676 bool
677
678config CEVT_SB1250
679 bool
680
681config CEVT_TXX9
682 bool
683
684config CSRC_BCM1480
685 bool
686
687config CSRC_IOASIC
688 bool
689
690config CSRC_R4K
691 bool
692
693config CSRC_SB1250
694 bool
695
696config GPIO_TXX9
697 select GENERIC_GPIO
698 select HAVE_GPIO_LIB
699 bool
700
701config CFE
702 bool
703
704config DMA_COHERENT
705 bool
706
707config DMA_IP27
708 bool
709
710config DMA_NONCOHERENT
711 bool
712 select DMA_NEED_PCI_MAP_STATE
713
714config DMA_NEED_PCI_MAP_STATE
715 bool
716
717config EARLY_PRINTK
718 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
719 depends on SYS_HAS_EARLY_PRINTK
720 default y
721 help
722 This option enables special console drivers which allow the kernel
723 to print messages very early in the bootup process.
724
725 This is useful for kernel debugging when your machine crashes very
726 early before the console code is initialized. For normal operation,
727 it is not recommended because it looks ugly on some machines and
728 doesn't cooperate with an X server. You should normally say N here,
729 unless you want to debug such a crash.
730
731config SYS_HAS_EARLY_PRINTK
732 bool
733
734config HOTPLUG_CPU
735 bool
736 default n
737
738config I8259
739 bool
740
741config MIPS_BONITO64
742 bool
743
744config MIPS_MSC
745 bool
746
747config MIPS_NILE4
748 bool
749
750config MIPS_DISABLE_OBSOLETE_IDE
751 bool
752
753config SYNC_R4K
754 bool
755
756config NO_IOPORT
757 def_bool n
758
759config GENERIC_ISA_DMA
760 bool
761 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
762
763config GENERIC_ISA_DMA_SUPPORT_BROKEN
764 bool
765 select GENERIC_ISA_DMA
766
767config GENERIC_GPIO
768 bool
769
770#
771# Endianess selection. Sufficiently obscure so many users don't know what to
772# answer,so we try hard to limit the available choices. Also the use of a
773# choice statement should be more obvious to the user.
774#
775choice
776 prompt "Endianess selection"
777 help
778 Some MIPS machines can be configured for either little or big endian
779 byte order. These modes require different kernels and a different
780 Linux distribution. In general there is one preferred byteorder for a
781 particular system but some systems are just as commonly used in the
782 one or the other endianness.
783
784config CPU_BIG_ENDIAN
785 bool "Big endian"
786 depends on SYS_SUPPORTS_BIG_ENDIAN
787
788config CPU_LITTLE_ENDIAN
789 bool "Little endian"
790 depends on SYS_SUPPORTS_LITTLE_ENDIAN
791 help
792
793endchoice
794
795config SYS_SUPPORTS_APM_EMULATION
796 bool
797
798config SYS_SUPPORTS_BIG_ENDIAN
799 bool
800
801config SYS_SUPPORTS_LITTLE_ENDIAN
802 bool
803
804config IRQ_CPU
805 bool
806
807config IRQ_CPU_RM7K
808 bool
809
810config IRQ_CPU_RM9K
811 bool
812
813config IRQ_MSP_SLP
814 bool
815
816config IRQ_MSP_CIC
817 bool
818
819config IRQ_TXX9
820 bool
821
822config IRQ_GT641XX
823 bool
824
825config IRQ_GIC
826 bool
827
828config MIPS_BOARDS_GEN
829 bool
830
831config PCI_GT64XXX_PCI0
832 bool
833
834config NO_EXCEPT_FILL
835 bool
836
837config MIPS_RM9122
838 bool
839 select SERIAL_RM9000
840
841config PNX8550
842 bool
843 select SOC_PNX8550
844
845config SOC_PNX8550
846 bool
847 select DMA_NONCOHERENT
848 select HW_HAS_PCI
849 select SYS_HAS_CPU_MIPS32_R1
850 select SYS_HAS_EARLY_PRINTK
851 select SYS_SUPPORTS_32BIT_KERNEL
852 select GENERIC_HARDIRQS_NO__DO_IRQ
853 select SYS_SUPPORTS_KGDB
854 select GENERIC_GPIO
855
856config SWAP_IO_SPACE
857 bool
858
859config EMMA2RH
860 bool
861 depends on MARKEINS
862 default y
863
864config SERIAL_RM9000
865 bool
866
867config SGI_HAS_DS1286
868 bool
869
870config SGI_HAS_INDYDOG
871 bool
872
873config SGI_HAS_HAL2
874 bool
875
876config SGI_HAS_SEEQ
877 bool
878
879config SGI_HAS_WD93
880 bool
881
882config SGI_HAS_ZILOG
883 bool
884
885config SGI_HAS_I8042
886 bool
887
888config DEFAULT_SGI_PARTITION
889 bool
890
891config ARC32
892 bool
893
894config SNIPROM
895 bool
896
897config BOOT_ELF32
898 bool
899
900config MIPS_L1_CACHE_SHIFT
901 int
902 default "4" if MACH_DECSTATION
903 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM
904 default "4" if PMC_MSP4200_EVAL
905 default "5"
906
907config HAVE_STD_PC_SERIAL_PORT
908 bool
909
910config ARC_CONSOLE
911 bool "ARC console support"
912 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
913
914config ARC_MEMORY
915 bool
916 depends on MACH_JAZZ || SNI_RM || SGI_IP32
917 default y
918
919config ARC_PROMLIB
920 bool
921 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
922 default y
923
924config ARC64
925 bool
926
927config BOOT_ELF64
928 bool
929
930menu "CPU selection"
931
932choice
933 prompt "CPU type"
934 default CPU_R4X00
935
936config CPU_LOONGSON2
937 bool "Loongson 2"
938 depends on SYS_HAS_CPU_LOONGSON2
939 select CPU_SUPPORTS_32BIT_KERNEL
940 select CPU_SUPPORTS_64BIT_KERNEL
941 select CPU_SUPPORTS_HIGHMEM
942 help
943 The Loongson 2E processor implements the MIPS III instruction set
944 with many extensions.
945
946config CPU_MIPS32_R1
947 bool "MIPS32 Release 1"
948 depends on SYS_HAS_CPU_MIPS32_R1
949 select CPU_HAS_LLSC
950 select CPU_HAS_PREFETCH
951 select CPU_SUPPORTS_32BIT_KERNEL
952 select CPU_SUPPORTS_HIGHMEM
953 help
954 Choose this option to build a kernel for release 1 or later of the
955 MIPS32 architecture. Most modern embedded systems with a 32-bit
956 MIPS processor are based on a MIPS32 processor. If you know the
957 specific type of processor in your system, choose those that one
958 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
959 Release 2 of the MIPS32 architecture is available since several
960 years so chances are you even have a MIPS32 Release 2 processor
961 in which case you should choose CPU_MIPS32_R2 instead for better
962 performance.
963
964config CPU_MIPS32_R2
965 bool "MIPS32 Release 2"
966 depends on SYS_HAS_CPU_MIPS32_R2
967 select CPU_HAS_LLSC
968 select CPU_HAS_PREFETCH
969 select CPU_SUPPORTS_32BIT_KERNEL
970 select CPU_SUPPORTS_HIGHMEM
971 help
972 Choose this option to build a kernel for release 2 or later of the
973 MIPS32 architecture. Most modern embedded systems with a 32-bit
974 MIPS processor are based on a MIPS32 processor. If you know the
975 specific type of processor in your system, choose those that one
976 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
977
978config CPU_MIPS64_R1
979 bool "MIPS64 Release 1"
980 depends on SYS_HAS_CPU_MIPS64_R1
981 select CPU_HAS_LLSC
982 select CPU_HAS_PREFETCH
983 select CPU_SUPPORTS_32BIT_KERNEL
984 select CPU_SUPPORTS_64BIT_KERNEL
985 select CPU_SUPPORTS_HIGHMEM
986 help
987 Choose this option to build a kernel for release 1 or later of the
988 MIPS64 architecture. Many modern embedded systems with a 64-bit
989 MIPS processor are based on a MIPS64 processor. If you know the
990 specific type of processor in your system, choose those that one
991 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
992 Release 2 of the MIPS64 architecture is available since several
993 years so chances are you even have a MIPS64 Release 2 processor
994 in which case you should choose CPU_MIPS64_R2 instead for better
995 performance.
996
997config CPU_MIPS64_R2
998 bool "MIPS64 Release 2"
999 depends on SYS_HAS_CPU_MIPS64_R2
1000 select CPU_HAS_LLSC
1001 select CPU_HAS_PREFETCH
1002 select CPU_SUPPORTS_32BIT_KERNEL
1003 select CPU_SUPPORTS_64BIT_KERNEL
1004 select CPU_SUPPORTS_HIGHMEM
1005 help
1006 Choose this option to build a kernel for release 2 or later of the
1007 MIPS64 architecture. Many modern embedded systems with a 64-bit
1008 MIPS processor are based on a MIPS64 processor. If you know the
1009 specific type of processor in your system, choose those that one
1010 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1011
1012config CPU_R3000
1013 bool "R3000"
1014 depends on SYS_HAS_CPU_R3000
1015 select CPU_HAS_WB
1016 select CPU_SUPPORTS_32BIT_KERNEL
1017 select CPU_SUPPORTS_HIGHMEM
1018 help
1019 Please make sure to pick the right CPU type. Linux/MIPS is not
1020 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1021 *not* work on R4000 machines and vice versa. However, since most
1022 of the supported machines have an R4000 (or similar) CPU, R4x00
1023 might be a safe bet. If the resulting kernel does not work,
1024 try to recompile with R3000.
1025
1026config CPU_TX39XX
1027 bool "R39XX"
1028 depends on SYS_HAS_CPU_TX39XX
1029 select CPU_SUPPORTS_32BIT_KERNEL
1030
1031config CPU_VR41XX
1032 bool "R41xx"
1033 depends on SYS_HAS_CPU_VR41XX
1034 select CPU_SUPPORTS_32BIT_KERNEL
1035 select CPU_SUPPORTS_64BIT_KERNEL
1036 help
1037 The options selects support for the NEC VR4100 series of processors.
1038 Only choose this option if you have one of these processors as a
1039 kernel built with this option will not run on any other type of
1040 processor or vice versa.
1041
1042config CPU_R4300
1043 bool "R4300"
1044 depends on SYS_HAS_CPU_R4300
1045 select CPU_HAS_LLSC
1046 select CPU_SUPPORTS_32BIT_KERNEL
1047 select CPU_SUPPORTS_64BIT_KERNEL
1048 help
1049 MIPS Technologies R4300-series processors.
1050
1051config CPU_R4X00
1052 bool "R4x00"
1053 depends on SYS_HAS_CPU_R4X00
1054 select CPU_HAS_LLSC
1055 select CPU_SUPPORTS_32BIT_KERNEL
1056 select CPU_SUPPORTS_64BIT_KERNEL
1057 help
1058 MIPS Technologies R4000-series processors other than 4300, including
1059 the R4000, R4400, R4600, and 4700.
1060
1061config CPU_TX49XX
1062 bool "R49XX"
1063 depends on SYS_HAS_CPU_TX49XX
1064 select CPU_HAS_LLSC
1065 select CPU_HAS_PREFETCH
1066 select CPU_SUPPORTS_32BIT_KERNEL
1067 select CPU_SUPPORTS_64BIT_KERNEL
1068
1069config CPU_R5000
1070 bool "R5000"
1071 depends on SYS_HAS_CPU_R5000
1072 select CPU_HAS_LLSC
1073 select CPU_SUPPORTS_32BIT_KERNEL
1074 select CPU_SUPPORTS_64BIT_KERNEL
1075 help
1076 MIPS Technologies R5000-series processors other than the Nevada.
1077
1078config CPU_R5432
1079 bool "R5432"
1080 depends on SYS_HAS_CPU_R5432
1081 select CPU_HAS_LLSC
1082 select CPU_SUPPORTS_32BIT_KERNEL
1083 select CPU_SUPPORTS_64BIT_KERNEL
1084
1085config CPU_R6000
1086 bool "R6000"
1087 depends on EXPERIMENTAL
1088 select CPU_HAS_LLSC
1089 depends on SYS_HAS_CPU_R6000
1090 select CPU_SUPPORTS_32BIT_KERNEL
1091 help
1092 MIPS Technologies R6000 and R6000A series processors. Note these
1093 processors are extremely rare and the support for them is incomplete.
1094
1095config CPU_NEVADA
1096 bool "RM52xx"
1097 depends on SYS_HAS_CPU_NEVADA
1098 select CPU_HAS_LLSC
1099 select CPU_SUPPORTS_32BIT_KERNEL
1100 select CPU_SUPPORTS_64BIT_KERNEL
1101 help
1102 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1103
1104config CPU_R8000
1105 bool "R8000"
1106 depends on EXPERIMENTAL
1107 depends on SYS_HAS_CPU_R8000
1108 select CPU_HAS_LLSC
1109 select CPU_HAS_PREFETCH
1110 select CPU_SUPPORTS_64BIT_KERNEL
1111 help
1112 MIPS Technologies R8000 processors. Note these processors are
1113 uncommon and the support for them is incomplete.
1114
1115config CPU_R10000
1116 bool "R10000"
1117 depends on SYS_HAS_CPU_R10000
1118 select CPU_HAS_LLSC
1119 select CPU_HAS_PREFETCH
1120 select CPU_SUPPORTS_32BIT_KERNEL
1121 select CPU_SUPPORTS_64BIT_KERNEL
1122 select CPU_SUPPORTS_HIGHMEM
1123 help
1124 MIPS Technologies R10000-series processors.
1125
1126config CPU_RM7000
1127 bool "RM7000"
1128 depends on SYS_HAS_CPU_RM7000
1129 select CPU_HAS_LLSC
1130 select CPU_HAS_PREFETCH
1131 select CPU_SUPPORTS_32BIT_KERNEL
1132 select CPU_SUPPORTS_64BIT_KERNEL
1133 select CPU_SUPPORTS_HIGHMEM
1134
1135config CPU_RM9000
1136 bool "RM9000"
1137 depends on SYS_HAS_CPU_RM9000
1138 select CPU_HAS_LLSC
1139 select CPU_HAS_PREFETCH
1140 select CPU_SUPPORTS_32BIT_KERNEL
1141 select CPU_SUPPORTS_64BIT_KERNEL
1142 select CPU_SUPPORTS_HIGHMEM
1143 select WEAK_ORDERING
1144
1145config CPU_SB1
1146 bool "SB1"
1147 depends on SYS_HAS_CPU_SB1
1148 select CPU_HAS_LLSC
1149 select CPU_SUPPORTS_32BIT_KERNEL
1150 select CPU_SUPPORTS_64BIT_KERNEL
1151 select CPU_SUPPORTS_HIGHMEM
1152 select WEAK_ORDERING
1153
1154endchoice
1155
1156config SYS_HAS_CPU_LOONGSON2
1157 bool
1158
1159config SYS_HAS_CPU_MIPS32_R1
1160 bool
1161
1162config SYS_HAS_CPU_MIPS32_R2
1163 bool
1164
1165config SYS_HAS_CPU_MIPS64_R1
1166 bool
1167
1168config SYS_HAS_CPU_MIPS64_R2
1169 bool
1170
1171config SYS_HAS_CPU_R3000
1172 bool
1173
1174config SYS_HAS_CPU_TX39XX
1175 bool
1176
1177config SYS_HAS_CPU_VR41XX
1178 bool
1179
1180config SYS_HAS_CPU_R4300
1181 bool
1182
1183config SYS_HAS_CPU_R4X00
1184 bool
1185
1186config SYS_HAS_CPU_TX49XX
1187 bool
1188
1189config SYS_HAS_CPU_R5000
1190 bool
1191
1192config SYS_HAS_CPU_R5432
1193 bool
1194
1195config SYS_HAS_CPU_R6000
1196 bool
1197
1198config SYS_HAS_CPU_NEVADA
1199 bool
1200
1201config SYS_HAS_CPU_R8000
1202 bool
1203
1204config SYS_HAS_CPU_R10000
1205 bool
1206
1207config SYS_HAS_CPU_RM7000
1208 bool
1209
1210config SYS_HAS_CPU_RM9000
1211 bool
1212
1213config SYS_HAS_CPU_SB1
1214 bool
1215
1216#
1217# CPU may reorder R->R, R->W, W->R, W->W
1218# Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1219#
1220config WEAK_ORDERING
1221 bool
1222
1223#
1224# CPU may reorder reads and writes beyond LL/SC
1225# CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1226#
1227config WEAK_REORDERING_BEYOND_LLSC
1228 bool
1229endmenu
1230
1231#
1232# These two indicate any level of the MIPS32 and MIPS64 architecture
1233#
1234config CPU_MIPS32
1235 bool
1236 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1237
1238config CPU_MIPS64
1239 bool
1240 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1241
1242#
1243# These two indicate the revision of the architecture, either Release 1 or Release 2
1244#
1245config CPU_MIPSR1
1246 bool
1247 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1248
1249config CPU_MIPSR2
1250 bool
1251 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1252
1253config SYS_SUPPORTS_32BIT_KERNEL
1254 bool
1255config SYS_SUPPORTS_64BIT_KERNEL
1256 bool
1257config CPU_SUPPORTS_32BIT_KERNEL
1258 bool
1259config CPU_SUPPORTS_64BIT_KERNEL
1260 bool
1261
1262menu "Kernel type"
1263
1264choice
1265
1266 prompt "Kernel code model"
1267 help
1268 You should only select this option if you have a workload that
1269 actually benefits from 64-bit processing or if your machine has
1270 large memory. You will only be presented a single option in this
1271 menu if your system does not support both 32-bit and 64-bit kernels.
1272
1273config 32BIT
1274 bool "32-bit kernel"
1275 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1276 select TRAD_SIGNALS
1277 help
1278 Select this option if you want to build a 32-bit kernel.
1279config 64BIT
1280 bool "64-bit kernel"
1281 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1282 help
1283 Select this option if you want to build a 64-bit kernel.
1284
1285endchoice
1286
1287choice
1288 prompt "Kernel page size"
1289 default PAGE_SIZE_4KB
1290
1291config PAGE_SIZE_4KB
1292 bool "4kB"
1293 help
1294 This option select the standard 4kB Linux page size. On some
1295 R3000-family processors this is the only available page size. Using
1296 4kB page size will minimize memory consumption and is therefore
1297 recommended for low memory systems.
1298
1299config PAGE_SIZE_8KB
1300 bool "8kB"
1301 depends on EXPERIMENTAL && CPU_R8000
1302 help
1303 Using 8kB page size will result in higher performance kernel at
1304 the price of higher memory consumption. This option is available
1305 only on the R8000 processor. Not that at the time of this writing
1306 this option is still high experimental; there are also issues with
1307 compatibility of user applications.
1308
1309config PAGE_SIZE_16KB
1310 bool "16kB"
1311 depends on !CPU_R3000 && !CPU_TX39XX
1312 help
1313 Using 16kB page size will result in higher performance kernel at
1314 the price of higher memory consumption. This option is available on
1315 all non-R3000 family processors. Note that you will need a suitable
1316 Linux distribution to support this.
1317
1318config PAGE_SIZE_64KB
1319 bool "64kB"
1320 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1321 help
1322 Using 64kB page size will result in higher performance kernel at
1323 the price of higher memory consumption. This option is available on
1324 all non-R3000 family processor. Not that at the time of this
1325 writing this option is still high experimental.
1326
1327endchoice
1328
1329config BOARD_SCACHE
1330 bool
1331
1332config IP22_CPU_SCACHE
1333 bool
1334 select BOARD_SCACHE
1335
1336#
1337# Support for a MIPS32 / MIPS64 style S-caches
1338#
1339config MIPS_CPU_SCACHE
1340 bool
1341 select BOARD_SCACHE
1342
1343config R5000_CPU_SCACHE
1344 bool
1345 select BOARD_SCACHE
1346
1347config RM7000_CPU_SCACHE
1348 bool
1349 select BOARD_SCACHE
1350
1351config SIBYTE_DMA_PAGEOPS
1352 bool "Use DMA to clear/copy pages"
1353 depends on CPU_SB1
1354 help
1355 Instead of using the CPU to zero and copy pages, use a Data Mover
1356 channel. These DMA channels are otherwise unused by the standard
1357 SiByte Linux port. Seems to give a small performance benefit.
1358
1359config CPU_HAS_PREFETCH
1360 bool
1361
1362choice
1363 prompt "MIPS MT options"
1364
1365config MIPS_MT_DISABLED
1366 bool "Disable multithreading support."
1367 help
1368 Use this option if your workload can't take advantage of
1369 MIPS hardware multithreading support. On systems that don't have
1370 the option of an MT-enabled processor this option will be the only
1371 option in this menu.
1372
1373config MIPS_MT_SMP
1374 bool "Use 1 TC on each available VPE for SMP"
1375 depends on SYS_SUPPORTS_MULTITHREADING
1376 select CPU_MIPSR2_IRQ_VI
1377 select CPU_MIPSR2_IRQ_EI
1378 select MIPS_MT
1379 select NR_CPUS_DEFAULT_2
1380 select SMP
1381 select SYS_SUPPORTS_SCHED_SMT if SMP
1382 select SYS_SUPPORTS_SMP
1383 select SMP_UP
1384 help
1385 This is a kernel model which is also known a VSMP or lately
1386 has been marketesed into SMVP.
1387
1388config MIPS_MT_SMTC
1389 bool "SMTC: Use all TCs on all VPEs for SMP"
1390 depends on CPU_MIPS32_R2
1391 #depends on CPU_MIPS64_R2 # once there is hardware ...
1392 depends on SYS_SUPPORTS_MULTITHREADING
1393 select GENERIC_CLOCKEVENTS_BROADCAST
1394 select CPU_MIPSR2_IRQ_VI
1395 select CPU_MIPSR2_IRQ_EI
1396 select MIPS_MT
1397 select NR_CPUS_DEFAULT_8
1398 select SMP
1399 select SYS_SUPPORTS_SMP
1400 select SMP_UP
1401 help
1402 This is a kernel model which is known a SMTC or lately has been
1403 marketesed into SMVP.
1404
1405endchoice
1406
1407config MIPS_MT
1408 bool
1409
1410config SCHED_SMT
1411 bool "SMT (multithreading) scheduler support"
1412 depends on SYS_SUPPORTS_SCHED_SMT
1413 default n
1414 help
1415 SMT scheduler support improves the CPU scheduler's decision making
1416 when dealing with MIPS MT enabled cores at a cost of slightly
1417 increased overhead in some places. If unsure say N here.
1418
1419config SYS_SUPPORTS_SCHED_SMT
1420 bool
1421
1422
1423config SYS_SUPPORTS_MULTITHREADING
1424 bool
1425
1426config MIPS_MT_FPAFF
1427 bool "Dynamic FPU affinity for FP-intensive threads"
1428 default y
1429 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1430
1431config MIPS_VPE_LOADER
1432 bool "VPE loader support."
1433 depends on SYS_SUPPORTS_MULTITHREADING
1434 select CPU_MIPSR2_IRQ_VI
1435 select CPU_MIPSR2_IRQ_EI
1436 select MIPS_MT
1437 help
1438 Includes a loader for loading an elf relocatable object
1439 onto another VPE and running it.
1440
1441config MIPS_MT_SMTC_INSTANT_REPLAY
1442 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1443 depends on MIPS_MT_SMTC && !PREEMPT
1444 default y
1445 help
1446 SMTC pseudo-interrupts between TCs are deferred and queued
1447 if the target TC is interrupt-inhibited (IXMT). In the first
1448 SMTC prototypes, these queued IPIs were serviced on return
1449 to user mode, or on entry into the kernel idle loop. The
1450 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1451 processing, which adds runtime overhead (hence the option to turn
1452 it off), but ensures that IPIs are handled promptly even under
1453 heavy I/O interrupt load.
1454
1455config MIPS_MT_SMTC_IM_BACKSTOP
1456 bool "Use per-TC register bits as backstop for inhibited IM bits"
1457 depends on MIPS_MT_SMTC
1458 default y
1459 help
1460 To support multiple TC microthreads acting as "CPUs" within
1461 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1462 during interrupt handling. To support legacy drivers and interrupt
1463 controller management code, SMTC has a "backstop" to track and
1464 if necessary restore the interrupt mask. This has some performance
1465 impact on interrupt service overhead. Disable it only if you know
1466 what you are doing.
1467
1468config MIPS_MT_SMTC_IRQAFF
1469 bool "Support IRQ affinity API"
1470 depends on MIPS_MT_SMTC
1471 default n
1472 help
1473 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1474 for SMTC Linux kernel. Requires platform support, of which
1475 an example can be found in the MIPS kernel i8259 and Malta
1476 platform code. It is recommended that MIPS_MT_SMTC_INSTANT_REPLAY
1477 be enabled if MIPS_MT_SMTC_IRQAFF is used. Adds overhead to
1478 interrupt dispatch, and should be used only if you know what
1479 you are doing.
1480
1481config MIPS_VPE_LOADER_TOM
1482 bool "Load VPE program into memory hidden from linux"
1483 depends on MIPS_VPE_LOADER
1484 default y
1485 help
1486 The loader can use memory that is present but has been hidden from
1487 Linux using the kernel command line option "mem=xxMB". It's up to
1488 you to ensure the amount you put in the option and the space your
1489 program requires is less or equal to the amount physically present.
1490
1491# this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1492config MIPS_VPE_APSP_API
1493 bool "Enable support for AP/SP API (RTLX)"
1494 depends on MIPS_VPE_LOADER
1495 help
1496
1497config MIPS_APSP_KSPD
1498 bool "Enable KSPD"
1499 depends on MIPS_VPE_APSP_API
1500 default y
1501 help
1502 KSPD is a kernel daemon that accepts syscall requests from the SP
1503 side, actions them and returns the results. It also handles the
1504 "exit" syscall notifying other kernel modules the SP program is
1505 exiting. You probably want to say yes here.
1506
1507config SB1_PASS_1_WORKAROUNDS
1508 bool
1509 depends on CPU_SB1_PASS_1
1510 default y
1511
1512config SB1_PASS_2_WORKAROUNDS
1513 bool
1514 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1515 default y
1516
1517config SB1_PASS_2_1_WORKAROUNDS
1518 bool
1519 depends on CPU_SB1 && CPU_SB1_PASS_2
1520 default y
1521
1522config 64BIT_PHYS_ADDR
1523 bool
1524
1525config CPU_HAS_LLSC
1526 bool
1527
1528config CPU_HAS_SMARTMIPS
1529 depends on SYS_SUPPORTS_SMARTMIPS
1530 bool "Support for the SmartMIPS ASE"
1531 help
1532 SmartMIPS is a extension of the MIPS32 architecture aimed at
1533 increased security at both hardware and software level for
1534 smartcards. Enabling this option will allow proper use of the
1535 SmartMIPS instructions by Linux applications. However a kernel with
1536 this option will not work on a MIPS core without SmartMIPS core. If
1537 you don't know you probably don't have SmartMIPS and should say N
1538 here.
1539
1540config CPU_HAS_WB
1541 bool
1542
1543#
1544# Vectored interrupt mode is an R2 feature
1545#
1546config CPU_MIPSR2_IRQ_VI
1547 bool
1548
1549#
1550# Extended interrupt mode is an R2 feature
1551#
1552config CPU_MIPSR2_IRQ_EI
1553 bool
1554
1555config CPU_HAS_SYNC
1556 bool
1557 depends on !CPU_R3000
1558 default y
1559
1560config GENERIC_CLOCKEVENTS_BROADCAST
1561 bool
1562
1563#
1564# CPU non-features
1565#
1566config CPU_DADDI_WORKAROUNDS
1567 bool
1568
1569config CPU_R4000_WORKAROUNDS
1570 bool
1571 select CPU_R4400_WORKAROUNDS
1572
1573config CPU_R4400_WORKAROUNDS
1574 bool
1575
1576#
1577# Use the generic interrupt handling code in kernel/irq/:
1578#
1579config GENERIC_HARDIRQS
1580 bool
1581 default y
1582
1583config GENERIC_IRQ_PROBE
1584 bool
1585 default y
1586
1587config IRQ_PER_CPU
1588 bool
1589
1590#
1591# - Highmem only makes sense for the 32-bit kernel.
1592# - The current highmem code will only work properly on physically indexed
1593# caches such as R3000, SB1, R7000 or those that look like they're virtually
1594# indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1595# moment we protect the user and offer the highmem option only on machines
1596# where it's known to be safe. This will not offer highmem on a few systems
1597# such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1598# indexed CPUs but we're playing safe.
1599# - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1600# know they might have memory configurations that could make use of highmem
1601# support.
1602#
1603config HIGHMEM
1604 bool "High Memory Support"
1605 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1606
1607config CPU_SUPPORTS_HIGHMEM
1608 bool
1609
1610config SYS_SUPPORTS_HIGHMEM
1611 bool
1612
1613config SYS_SUPPORTS_SMARTMIPS
1614 bool
1615
1616config ARCH_FLATMEM_ENABLE
1617 def_bool y
1618 depends on !NUMA
1619
1620config ARCH_DISCONTIGMEM_ENABLE
1621 bool
1622 default y if SGI_IP27
1623 help
1624 Say Y to support efficient handling of discontiguous physical memory,
1625 for architectures which are either NUMA (Non-Uniform Memory Access)
1626 or have huge holes in the physical address space for other reasons.
1627 See <file:Documentation/vm/numa> for more.
1628
1629config ARCH_POPULATES_NODE_MAP
1630 def_bool y
1631
1632config ARCH_SPARSEMEM_ENABLE
1633 bool
1634 select SPARSEMEM_STATIC
1635
1636config NUMA
1637 bool "NUMA Support"
1638 depends on SYS_SUPPORTS_NUMA
1639 help
1640 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1641 Access). This option improves performance on systems with more
1642 than two nodes; on two node systems it is generally better to
1643 leave it disabled; on single node systems disable this option
1644 disabled.
1645
1646config SYS_SUPPORTS_NUMA
1647 bool
1648
1649config NODES_SHIFT
1650 int
1651 default "6"
1652 depends on NEED_MULTIPLE_NODES
1653
1654source "mm/Kconfig"
1655
1656config SMP
1657 bool "Multi-Processing support"
1658 depends on SYS_SUPPORTS_SMP
1659 select IRQ_PER_CPU
1660 select USE_GENERIC_SMP_HELPERS
1661 help
1662 This enables support for systems with more than one CPU. If you have
1663 a system with only one CPU, like most personal computers, say N. If
1664 you have a system with more than one CPU, say Y.
1665
1666 If you say N here, the kernel will run on single and multiprocessor
1667 machines, but will use only one CPU of a multiprocessor machine. If
1668 you say Y here, the kernel will run on many, but not all,
1669 singleprocessor machines. On a singleprocessor machine, the kernel
1670 will run faster if you say N here.
1671
1672 People using multiprocessor machines who say Y here should also say
1673 Y to "Enhanced Real Time Clock Support", below.
1674
1675 See also the SMP-HOWTO available at
1676 <http://www.tldp.org/docs.html#howto>.
1677
1678 If you don't know what to do here, say N.
1679
1680config SMP_UP
1681 bool
1682
1683config SYS_SUPPORTS_SMP
1684 bool
1685
1686config NR_CPUS_DEFAULT_1
1687 bool
1688
1689config NR_CPUS_DEFAULT_2
1690 bool
1691
1692config NR_CPUS_DEFAULT_4
1693 bool
1694
1695config NR_CPUS_DEFAULT_8
1696 bool
1697
1698config NR_CPUS_DEFAULT_16
1699 bool
1700
1701config NR_CPUS_DEFAULT_32
1702 bool
1703
1704config NR_CPUS_DEFAULT_64
1705 bool
1706
1707config NR_CPUS
1708 int "Maximum number of CPUs (2-64)"
1709 range 1 64 if NR_CPUS_DEFAULT_1
1710 depends on SMP
1711 default "1" if NR_CPUS_DEFAULT_1
1712 default "2" if NR_CPUS_DEFAULT_2
1713 default "4" if NR_CPUS_DEFAULT_4
1714 default "8" if NR_CPUS_DEFAULT_8
1715 default "16" if NR_CPUS_DEFAULT_16
1716 default "32" if NR_CPUS_DEFAULT_32
1717 default "64" if NR_CPUS_DEFAULT_64
1718 help
1719 This allows you to specify the maximum number of CPUs which this
1720 kernel will support. The maximum supported value is 32 for 32-bit
1721 kernel and 64 for 64-bit kernels; the minimum value which makes
1722 sense is 1 for Qemu (useful only for kernel debugging purposes)
1723 and 2 for all others.
1724
1725 This is purely to save memory - each supported CPU adds
1726 approximately eight kilobytes to the kernel image. For best
1727 performance should round up your number of processors to the next
1728 power of two.
1729
1730config MIPS_CMP
1731 bool "MIPS CMP framework support"
1732 depends on SMP
1733 select SYNC_R4K
1734 select SYS_SUPPORTS_SCHED_SMT
1735 select WEAK_ORDERING
1736 default n
1737 help
1738 This is a placeholder option for the GCMP work. It will need to
1739 be handled differently...
1740
1741source "kernel/time/Kconfig"
1742
1743#
1744# Timer Interrupt Frequency Configuration
1745#
1746
1747choice
1748 prompt "Timer frequency"
1749 default HZ_250
1750 help
1751 Allows the configuration of the timer frequency.
1752
1753 config HZ_48
1754 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
1755
1756 config HZ_100
1757 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1758
1759 config HZ_128
1760 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1761
1762 config HZ_250
1763 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1764
1765 config HZ_256
1766 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1767
1768 config HZ_1000
1769 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1770
1771 config HZ_1024
1772 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1773
1774endchoice
1775
1776config SYS_SUPPORTS_48HZ
1777 bool
1778
1779config SYS_SUPPORTS_100HZ
1780 bool
1781
1782config SYS_SUPPORTS_128HZ
1783 bool
1784
1785config SYS_SUPPORTS_250HZ
1786 bool
1787
1788config SYS_SUPPORTS_256HZ
1789 bool
1790
1791config SYS_SUPPORTS_1000HZ
1792 bool
1793
1794config SYS_SUPPORTS_1024HZ
1795 bool
1796
1797config SYS_SUPPORTS_ARBIT_HZ
1798 bool
1799 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1800 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1801 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1802 !SYS_SUPPORTS_1024HZ
1803
1804config HZ
1805 int
1806 default 48 if HZ_48
1807 default 100 if HZ_100
1808 default 128 if HZ_128
1809 default 250 if HZ_250
1810 default 256 if HZ_256
1811 default 1000 if HZ_1000
1812 default 1024 if HZ_1024
1813
1814source "kernel/Kconfig.preempt"
1815
1816config MIPS_INSANE_LARGE
1817 bool "Support for large 64-bit configurations"
1818 depends on CPU_R10000 && 64BIT
1819 help
1820 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1821 previous 64-bit processors which only supported 40 bit / 1TB. If you
1822 need processes of more than 1TB virtual address space, say Y here.
1823 This will result in additional memory usage, so it is not
1824 recommended for normal users.
1825
1826config KEXEC
1827 bool "Kexec system call (EXPERIMENTAL)"
1828 depends on EXPERIMENTAL
1829 help
1830 kexec is a system call that implements the ability to shutdown your
1831 current kernel, and to start another kernel. It is like a reboot
1832 but it is independent of the system firmware. And like a reboot
1833 you can start any kernel with it, not just Linux.
1834
1835 The name comes from the similarity to the exec system call.
1836
1837 It is an ongoing process to be certain the hardware in a machine
1838 is properly shutdown, so do not be surprised if this code does not
1839 initially work for you. It may help to enable device hotplugging
1840 support. As of this writing the exact hardware interface is
1841 strongly in flux, so no good recommendation can be made.
1842
1843config SECCOMP
1844 bool "Enable seccomp to safely compute untrusted bytecode"
1845 depends on PROC_FS
1846 default y
1847 help
1848 This kernel feature is useful for number crunching applications
1849 that may need to compute untrusted bytecode during their
1850 execution. By using pipes or other transports made available to
1851 the process as file descriptors supporting the read/write
1852 syscalls, it's possible to isolate those applications in
1853 their own address space using seccomp. Once seccomp is
1854 enabled via /proc/<pid>/seccomp, it cannot be disabled
1855 and the task is only allowed to execute a few safe syscalls
1856 defined by each seccomp mode.
1857
1858 If unsure, say Y. Only embedded should say N here.
1859
1860endmenu
1861
1862config RWSEM_GENERIC_SPINLOCK
1863 bool
1864 default y
1865
1866config LOCKDEP_SUPPORT
1867 bool
1868 default y
1869
1870config STACKTRACE_SUPPORT
1871 bool
1872 default y
1873
1874source "init/Kconfig"
1875
1876menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1877
1878config HW_HAS_EISA
1879 bool
1880config HW_HAS_PCI
1881 bool
1882
1883config PCI
1884 bool "Support for PCI controller"
1885 depends on HW_HAS_PCI
1886 select PCI_DOMAINS
1887 help
1888 Find out whether you have a PCI motherboard. PCI is the name of a
1889 bus system, i.e. the way the CPU talks to the other stuff inside
1890 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1891 say Y, otherwise N.
1892
1893config PCI_DOMAINS
1894 bool
1895
1896source "drivers/pci/Kconfig"
1897
1898#
1899# ISA support is now enabled via select. Too many systems still have the one
1900# or other ISA chip on the board that users don't know about so don't expect
1901# users to choose the right thing ...
1902#
1903config ISA
1904 bool
1905
1906config EISA
1907 bool "EISA support"
1908 depends on HW_HAS_EISA
1909 select ISA
1910 select GENERIC_ISA_DMA
1911 ---help---
1912 The Extended Industry Standard Architecture (EISA) bus was
1913 developed as an open alternative to the IBM MicroChannel bus.
1914
1915 The EISA bus provided some of the features of the IBM MicroChannel
1916 bus while maintaining backward compatibility with cards made for
1917 the older ISA bus. The EISA bus saw limited use between 1988 and
1918 1995 when it was made obsolete by the PCI bus.
1919
1920 Say Y here if you are building a kernel for an EISA-based machine.
1921
1922 Otherwise, say N.
1923
1924source "drivers/eisa/Kconfig"
1925
1926config TC
1927 bool "TURBOchannel support"
1928 depends on MACH_DECSTATION
1929 help
1930 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1931 processors. Documentation on writing device drivers for TurboChannel
1932 is available at:
1933 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1934
1935#config ACCESSBUS
1936# bool "Access.Bus support"
1937# depends on TC
1938
1939config MMU
1940 bool
1941 default y
1942
1943config I8253
1944 bool
1945
1946config ZONE_DMA32
1947 bool
1948
1949source "drivers/pcmcia/Kconfig"
1950
1951source "drivers/pci/hotplug/Kconfig"
1952
1953endmenu
1954
1955menu "Executable file formats"
1956
1957source "fs/Kconfig.binfmt"
1958
1959config TRAD_SIGNALS
1960 bool
1961
1962config MIPS32_COMPAT
1963 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
1964 depends on 64BIT
1965 help
1966 Select this option if you want Linux/MIPS 32-bit binary
1967 compatibility. Since all software available for Linux/MIPS is
1968 currently 32-bit you should say Y here.
1969
1970config COMPAT
1971 bool
1972 depends on MIPS32_COMPAT
1973 default y
1974
1975config SYSVIPC_COMPAT
1976 bool
1977 depends on COMPAT && SYSVIPC
1978 default y
1979
1980config MIPS32_O32
1981 bool "Kernel support for o32 binaries"
1982 depends on MIPS32_COMPAT
1983 help
1984 Select this option if you want to run o32 binaries. These are pure
1985 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
1986 existing binaries are in this format.
1987
1988 If unsure, say Y.
1989
1990config MIPS32_N32
1991 bool "Kernel support for n32 binaries"
1992 depends on MIPS32_COMPAT
1993 help
1994 Select this option if you want to run n32 binaries. These are
1995 64-bit binaries using 32-bit quantities for addressing and certain
1996 data that would normally be 64-bit. They are used in special
1997 cases.
1998
1999 If unsure, say N.
2000
2001config BINFMT_ELF32
2002 bool
2003 default y if MIPS32_O32 || MIPS32_N32
2004
2005endmenu
2006
2007menu "Power management options"
2008
2009config ARCH_SUSPEND_POSSIBLE
2010 def_bool y
2011 depends on !SMP
2012
2013source "kernel/power/Kconfig"
2014
2015endmenu
2016
2017source "net/Kconfig"
2018
2019source "drivers/Kconfig"
2020
2021source "fs/Kconfig"
2022
2023source "arch/mips/Kconfig.debug"
2024
2025source "security/Kconfig"
2026
2027source "crypto/Kconfig"
2028
2029source "lib/Kconfig"