| blob | 4da736e25333abc8ce46440dcb8b97c4c9f2be9d |
1 config MIPS
2 bool
3 default y
4 select HAVE_IDE
5 select HAVE_OPROFILE
6 select HAVE_ARCH_KGDB
7 # Horrible source of confusion. Die, die, die ...
8 select EMBEDDED
9 select RTC_LIB
11 mainmenu "Linux/MIPS Kernel Configuration"
13 menu "Machine selection"
15 config ZONE_DMA
16 bool
18 choice
19 prompt "System type"
20 default SGI_IP22
22 config MACH_ALCHEMY
23 bool "Alchemy processor based machines"
25 config BASLER_EXCITE
26 bool "Basler eXcite smart camera"
27 select CEVT_R4K
28 select CSRC_R4K
29 select DMA_COHERENT
30 select HW_HAS_PCI
31 select IRQ_CPU
32 select IRQ_CPU_RM7K
33 select IRQ_CPU_RM9K
34 select MIPS_RM9122
35 select SYS_HAS_CPU_RM9000
36 select SYS_SUPPORTS_32BIT_KERNEL
37 select SYS_SUPPORTS_BIG_ENDIAN
38 help
39 The eXcite is a smart camera platform manufactured by
40 Basler Vision Technologies AG.
42 config 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
62 config 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
81 config 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/>.
107 If you have one of the following DECstation Models you definitely
108 want to choose R4xx0 for the CPU Type:
110 DECstation 5000/50
111 DECstation 5000/150
112 DECstation 5000/260
113 DECsystem 5900/260
115 otherwise choose R3000.
117 config 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.
141 config 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
158 config 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
184 config 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.
220 config 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.
239 config 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.
255 config 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
262 config PNX8550_JBS
263 bool "NXP PNX8550 based JBS board"
264 select PNX8550
265 select SYS_SUPPORTS_LITTLE_ENDIAN
267 config PNX8550_STB810
268 bool "NXP PNX8550 based STB810 board"
269 select PNX8550
270 select SYS_SUPPORTS_LITTLE_ENDIAN
272 config 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 IRQ_CPU
284 select SERIAL_8250
285 select SERIAL_8250_CONSOLE
286 help
287 This adds support for the PMC-Sierra family of Multi-Service
288 Processor System-On-A-Chips. These parts include a number
289 of integrated peripherals, interfaces and DSPs in addition to
290 a variety of MIPS cores.
292 config PMC_YOSEMITE
293 bool "PMC-Sierra Yosemite eval board"
294 select CEVT_R4K
295 select CSRC_R4K
296 select DMA_COHERENT
297 select HW_HAS_PCI
298 select IRQ_CPU
299 select IRQ_CPU_RM7K
300 select IRQ_CPU_RM9K
301 select SWAP_IO_SPACE
302 select SYS_HAS_CPU_RM9000
303 select SYS_HAS_EARLY_PRINTK
304 select SYS_SUPPORTS_32BIT_KERNEL
305 select SYS_SUPPORTS_64BIT_KERNEL
306 select SYS_SUPPORTS_BIG_ENDIAN
307 select SYS_SUPPORTS_HIGHMEM
308 select SYS_SUPPORTS_SMP
309 help
310 Yosemite is an evaluation board for the RM9000x2 processor
311 manufactured by PMC-Sierra.
313 config SGI_IP22
314 bool "SGI IP22 (Indy/Indigo2)"
315 select ARC
316 select ARC32
317 select BOOT_ELF32
318 select CEVT_R4K
319 select CSRC_R4K
320 select DEFAULT_SGI_PARTITION
321 select DMA_NONCOHERENT
322 select HW_HAS_EISA
323 select I8253
324 select I8259
325 select IP22_CPU_SCACHE
326 select IRQ_CPU
327 select GENERIC_ISA_DMA_SUPPORT_BROKEN
328 select SGI_HAS_DS1286
329 select SGI_HAS_I8042
330 select SGI_HAS_INDYDOG
331 select SGI_HAS_HAL2
332 select SGI_HAS_SEEQ
333 select SGI_HAS_WD93
334 select SGI_HAS_ZILOG
335 select SWAP_IO_SPACE
336 select SYS_HAS_CPU_R4X00
337 select SYS_HAS_CPU_R5000
338 select SYS_HAS_EARLY_PRINTK
339 select SYS_SUPPORTS_32BIT_KERNEL
340 select SYS_SUPPORTS_64BIT_KERNEL
341 select SYS_SUPPORTS_BIG_ENDIAN
342 help
343 This are the SGI Indy, Challenge S and Indigo2, as well as certain
344 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
345 that runs on these, say Y here.
347 config SGI_IP27
348 bool "SGI IP27 (Origin200/2000)"
349 select ARC
350 select ARC64
351 select BOOT_ELF64
352 select DEFAULT_SGI_PARTITION
353 select DMA_IP27
354 select SYS_HAS_EARLY_PRINTK
355 select HW_HAS_PCI
356 select NR_CPUS_DEFAULT_64
357 select SYS_HAS_CPU_R10000
358 select SYS_SUPPORTS_64BIT_KERNEL
359 select SYS_SUPPORTS_BIG_ENDIAN
360 select SYS_SUPPORTS_NUMA
361 select SYS_SUPPORTS_SMP
362 select GENERIC_HARDIRQS_NO__DO_IRQ
363 help
364 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
365 workstations. To compile a Linux kernel that runs on these, say Y
366 here.
368 config SGI_IP28
369 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
370 depends on EXPERIMENTAL
371 select ARC
372 select ARC64
373 select BOOT_ELF64
374 select CEVT_R4K
375 select CSRC_R4K
376 select DEFAULT_SGI_PARTITION
377 select DMA_NONCOHERENT
378 select GENERIC_ISA_DMA_SUPPORT_BROKEN
379 select IRQ_CPU
380 select HW_HAS_EISA
381 select I8253
382 select I8259
383 select SGI_HAS_DS1286
384 select SGI_HAS_I8042
385 select SGI_HAS_INDYDOG
386 select SGI_HAS_HAL2
387 select SGI_HAS_SEEQ
388 select SGI_HAS_WD93
389 select SGI_HAS_ZILOG
390 select SWAP_IO_SPACE
391 select SYS_HAS_CPU_R10000
392 select SYS_HAS_EARLY_PRINTK
393 select SYS_SUPPORTS_64BIT_KERNEL
394 select SYS_SUPPORTS_BIG_ENDIAN
395 help
396 This is the SGI Indigo2 with R10000 processor. To compile a Linux
397 kernel that runs on these, say Y here.
399 config SGI_IP32
400 bool "SGI IP32 (O2)"
401 select ARC
402 select ARC32
403 select BOOT_ELF32
404 select CEVT_R4K
405 select CSRC_R4K
406 select DMA_NONCOHERENT
407 select HW_HAS_PCI
408 select IRQ_CPU
409 select R5000_CPU_SCACHE
410 select RM7000_CPU_SCACHE
411 select SYS_HAS_CPU_R5000
412 select SYS_HAS_CPU_R10000 if BROKEN
413 select SYS_HAS_CPU_RM7000
414 select SYS_HAS_CPU_NEVADA
415 select SYS_SUPPORTS_64BIT_KERNEL
416 select SYS_SUPPORTS_BIG_ENDIAN
417 help
418 If you want this kernel to run on SGI O2 workstation, say Y here.
420 config SIBYTE_CRHINE
421 bool "Sibyte BCM91120C-CRhine"
422 depends on EXPERIMENTAL
423 select BOOT_ELF32
424 select DMA_COHERENT
425 select SIBYTE_BCM1120
426 select SWAP_IO_SPACE
427 select SYS_HAS_CPU_SB1
428 select SYS_SUPPORTS_BIG_ENDIAN
429 select SYS_SUPPORTS_LITTLE_ENDIAN
431 config SIBYTE_CARMEL
432 bool "Sibyte BCM91120x-Carmel"
433 depends on EXPERIMENTAL
434 select BOOT_ELF32
435 select DMA_COHERENT
436 select SIBYTE_BCM1120
437 select SWAP_IO_SPACE
438 select SYS_HAS_CPU_SB1
439 select SYS_SUPPORTS_BIG_ENDIAN
440 select SYS_SUPPORTS_LITTLE_ENDIAN
442 config SIBYTE_CRHONE
443 bool "Sibyte BCM91125C-CRhone"
444 depends on EXPERIMENTAL
445 select BOOT_ELF32
446 select DMA_COHERENT
447 select SIBYTE_BCM1125
448 select SWAP_IO_SPACE
449 select SYS_HAS_CPU_SB1
450 select SYS_SUPPORTS_BIG_ENDIAN
451 select SYS_SUPPORTS_HIGHMEM
452 select SYS_SUPPORTS_LITTLE_ENDIAN
454 config SIBYTE_RHONE
455 bool "Sibyte BCM91125E-Rhone"
456 depends on EXPERIMENTAL
457 select BOOT_ELF32
458 select DMA_COHERENT
459 select SIBYTE_BCM1125H
460 select SWAP_IO_SPACE
461 select SYS_HAS_CPU_SB1
462 select SYS_SUPPORTS_BIG_ENDIAN
463 select SYS_SUPPORTS_LITTLE_ENDIAN
465 config SIBYTE_SWARM
466 bool "Sibyte BCM91250A-SWARM"
467 select BOOT_ELF32
468 select DMA_COHERENT
469 select NR_CPUS_DEFAULT_2
470 select SIBYTE_SB1250
471 select SWAP_IO_SPACE
472 select SYS_HAS_CPU_SB1
473 select SYS_SUPPORTS_BIG_ENDIAN
474 select SYS_SUPPORTS_HIGHMEM
475 select SYS_SUPPORTS_LITTLE_ENDIAN
476 select ZONE_DMA32 if 64BIT
478 config SIBYTE_LITTLESUR
479 bool "Sibyte BCM91250C2-LittleSur"
480 depends on EXPERIMENTAL
481 select BOOT_ELF32
482 select DMA_COHERENT
483 select NR_CPUS_DEFAULT_2
484 select SIBYTE_SB1250
485 select SWAP_IO_SPACE
486 select SYS_HAS_CPU_SB1
487 select SYS_SUPPORTS_BIG_ENDIAN
488 select SYS_SUPPORTS_HIGHMEM
489 select SYS_SUPPORTS_LITTLE_ENDIAN
491 config SIBYTE_SENTOSA
492 bool "Sibyte BCM91250E-Sentosa"
493 depends on EXPERIMENTAL
494 select BOOT_ELF32
495 select DMA_COHERENT
496 select NR_CPUS_DEFAULT_2
497 select SIBYTE_SB1250
498 select SWAP_IO_SPACE
499 select SYS_HAS_CPU_SB1
500 select SYS_SUPPORTS_BIG_ENDIAN
501 select SYS_SUPPORTS_LITTLE_ENDIAN
503 config SIBYTE_BIGSUR
504 bool "Sibyte BCM91480B-BigSur"
505 select BOOT_ELF32
506 select DMA_COHERENT
507 select NR_CPUS_DEFAULT_4
508 select SIBYTE_BCM1x80
509 select SWAP_IO_SPACE
510 select SYS_HAS_CPU_SB1
511 select SYS_SUPPORTS_BIG_ENDIAN
512 select SYS_SUPPORTS_HIGHMEM
513 select SYS_SUPPORTS_LITTLE_ENDIAN
514 select ZONE_DMA32 if 64BIT
516 config SNI_RM
517 bool "SNI RM200/300/400"
518 select ARC if CPU_LITTLE_ENDIAN
519 select ARC32 if CPU_LITTLE_ENDIAN
520 select SNIPROM if CPU_BIG_ENDIAN
521 select ARCH_MAY_HAVE_PC_FDC
522 select BOOT_ELF32
523 select CEVT_R4K
524 select CSRC_R4K
525 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
526 select DMA_NONCOHERENT
527 select GENERIC_ISA_DMA
528 select HW_HAS_EISA
529 select HW_HAS_PCI
530 select IRQ_CPU
531 select I8253
532 select I8259
533 select ISA
534 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
535 select SYS_HAS_CPU_R4X00
536 select SYS_HAS_CPU_R5000
537 select SYS_HAS_CPU_R10000
538 select R5000_CPU_SCACHE
539 select SYS_HAS_EARLY_PRINTK
540 select SYS_SUPPORTS_32BIT_KERNEL
541 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
542 select SYS_SUPPORTS_BIG_ENDIAN
543 select SYS_SUPPORTS_HIGHMEM
544 select SYS_SUPPORTS_LITTLE_ENDIAN
545 help
546 The SNI RM200/300/400 are MIPS-based machines manufactured by
547 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
548 Technology and now in turn merged with Fujitsu. Say Y here to
549 support this machine type.
551 config MACH_TX39XX
552 bool "Toshiba TX39 series based machines"
554 config MACH_TX49XX
555 bool "Toshiba TX49 series based machines"
557 config MIKROTIK_RB532
558 bool "Mikrotik RB532 boards"
559 select CEVT_R4K
560 select CSRC_R4K
561 select DMA_NONCOHERENT
562 select GENERIC_HARDIRQS_NO__DO_IRQ
563 select HW_HAS_PCI
564 select IRQ_CPU
565 select SYS_HAS_CPU_MIPS32_R1
566 select SYS_SUPPORTS_32BIT_KERNEL
567 select SYS_SUPPORTS_LITTLE_ENDIAN
568 select SWAP_IO_SPACE
569 select BOOT_RAW
570 select GENERIC_GPIO
571 help
572 Support the Mikrotik(tm) RouterBoard 532 series,
573 based on the IDT RC32434 SoC.
575 config WR_PPMC
576 bool "Wind River PPMC board"
577 select CEVT_R4K
578 select CSRC_R4K
579 select IRQ_CPU
580 select BOOT_ELF32
581 select DMA_NONCOHERENT
582 select HW_HAS_PCI
583 select PCI_GT64XXX_PCI0
584 select SWAP_IO_SPACE
585 select SYS_HAS_CPU_MIPS32_R1
586 select SYS_HAS_CPU_MIPS32_R2
587 select SYS_HAS_CPU_MIPS64_R1
588 select SYS_HAS_CPU_NEVADA
589 select SYS_HAS_CPU_RM7000
590 select SYS_SUPPORTS_32BIT_KERNEL
591 select SYS_SUPPORTS_64BIT_KERNEL
592 select SYS_SUPPORTS_BIG_ENDIAN
593 select SYS_SUPPORTS_LITTLE_ENDIAN
594 help
595 This enables support for the Wind River MIPS32 4KC PPMC evaluation
596 board, which is based on GT64120 bridge chip.
598 endchoice
600 source "arch/mips/au1000/Kconfig"
601 source "arch/mips/basler/excite/Kconfig"
602 source "arch/mips/jazz/Kconfig"
603 source "arch/mips/lasat/Kconfig"
604 source "arch/mips/pmc-sierra/Kconfig"
605 source "arch/mips/sgi-ip27/Kconfig"
606 source "arch/mips/sibyte/Kconfig"
607 source "arch/mips/txx9/Kconfig"
608 source "arch/mips/vr41xx/Kconfig"
610 endmenu
612 config GENERIC_LOCKBREAK
613 bool
614 default y
615 depends on SMP && PREEMPT
617 config RWSEM_GENERIC_SPINLOCK
618 bool
619 default y
621 config RWSEM_XCHGADD_ALGORITHM
622 bool
624 config ARCH_HAS_ILOG2_U32
625 bool
626 default n
628 config ARCH_HAS_ILOG2_U64
629 bool
630 default n
632 config ARCH_SUPPORTS_OPROFILE
633 bool
634 default y if !MIPS_MT_SMTC
636 config GENERIC_FIND_NEXT_BIT
637 bool
638 default y
640 config GENERIC_HWEIGHT
641 bool
642 default y
644 config GENERIC_CALIBRATE_DELAY
645 bool
646 default y
648 config GENERIC_CLOCKEVENTS
649 bool
650 default y
652 config GENERIC_TIME
653 bool
654 default y
656 config GENERIC_CMOS_UPDATE
657 bool
658 default y
660 config SCHED_NO_NO_OMIT_FRAME_POINTER
661 bool
662 default y
664 config GENERIC_HARDIRQS_NO__DO_IRQ
665 bool
666 default n
668 #
669 # Select some configuration options automatically based on user selections.
670 #
671 config ARC
672 bool
674 config ARCH_MAY_HAVE_PC_FDC
675 bool
677 config BOOT_RAW
678 bool
680 config CEVT_BCM1480
681 bool
683 config CEVT_DS1287
684 bool
686 config CEVT_GT641XX
687 bool
689 config CEVT_R4K
690 bool
692 config CEVT_SB1250
693 bool
695 config CEVT_TXX9
696 bool
698 config CSRC_BCM1480
699 bool
701 config CSRC_IOASIC
702 bool
704 config CSRC_R4K
705 bool
707 config CSRC_SB1250
708 bool
710 config GPIO_TXX9
711 select GENERIC_GPIO
712 select ARCH_REQUIRE_GPIOLIB
713 bool
715 config CFE
716 bool
718 config DMA_COHERENT
719 bool
721 config DMA_IP27
722 bool
724 config DMA_NONCOHERENT
725 bool
726 select DMA_NEED_PCI_MAP_STATE
728 config DMA_NEED_PCI_MAP_STATE
729 bool
731 config EARLY_PRINTK
732 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
733 depends on SYS_HAS_EARLY_PRINTK
734 default y
735 help
736 This option enables special console drivers which allow the kernel
737 to print messages very early in the bootup process.
739 This is useful for kernel debugging when your machine crashes very
740 early before the console code is initialized. For normal operation,
741 it is not recommended because it looks ugly on some machines and
742 doesn't cooperate with an X server. You should normally say N here,
743 unless you want to debug such a crash.
745 config SYS_HAS_EARLY_PRINTK
746 bool
748 config HOTPLUG_CPU
749 bool
750 default n
752 config I8259
753 bool
755 config MIPS_BONITO64
756 bool
758 config MIPS_MSC
759 bool
761 config MIPS_NILE4
762 bool
764 config MIPS_DISABLE_OBSOLETE_IDE
765 bool
767 config SYNC_R4K
768 bool
770 config NO_IOPORT
771 def_bool n
773 config GENERIC_ISA_DMA
774 bool
775 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
777 config GENERIC_ISA_DMA_SUPPORT_BROKEN
778 bool
779 select GENERIC_ISA_DMA
781 config GENERIC_GPIO
782 bool
784 #
785 # Endianess selection. Sufficiently obscure so many users don't know what to
786 # answer,so we try hard to limit the available choices. Also the use of a
787 # choice statement should be more obvious to the user.
788 #
789 choice
790 prompt "Endianess selection"
791 help
792 Some MIPS machines can be configured for either little or big endian
793 byte order. These modes require different kernels and a different
794 Linux distribution. In general there is one preferred byteorder for a
795 particular system but some systems are just as commonly used in the
796 one or the other endianness.
798 config CPU_BIG_ENDIAN
799 bool "Big endian"
800 depends on SYS_SUPPORTS_BIG_ENDIAN
802 config CPU_LITTLE_ENDIAN
803 bool "Little endian"
804 depends on SYS_SUPPORTS_LITTLE_ENDIAN
805 help
807 endchoice
809 config SYS_SUPPORTS_APM_EMULATION
810 bool
812 config SYS_SUPPORTS_BIG_ENDIAN
813 bool
815 config SYS_SUPPORTS_LITTLE_ENDIAN
816 bool
818 config IRQ_CPU
819 bool
821 config IRQ_CPU_RM7K
822 bool
824 config IRQ_CPU_RM9K
825 bool
827 config IRQ_MSP_SLP
828 bool
830 config IRQ_MSP_CIC
831 bool
833 config IRQ_TXX9
834 bool
836 config IRQ_GT641XX
837 bool
839 config IRQ_GIC
840 bool
842 config MIPS_BOARDS_GEN
843 bool
845 config PCI_GT64XXX_PCI0
846 bool
848 config NO_EXCEPT_FILL
849 bool
851 config MIPS_RM9122
852 bool
853 select SERIAL_RM9000
855 config PNX8550
856 bool
857 select SOC_PNX8550
859 config SOC_PNX8550
860 bool
861 select DMA_NONCOHERENT
862 select HW_HAS_PCI
863 select SYS_HAS_CPU_MIPS32_R1
864 select SYS_HAS_EARLY_PRINTK
865 select SYS_SUPPORTS_32BIT_KERNEL
866 select GENERIC_HARDIRQS_NO__DO_IRQ
867 select GENERIC_GPIO
869 config SWAP_IO_SPACE
870 bool
872 config EMMA2RH
873 bool
874 depends on MARKEINS
875 default y
877 config SERIAL_RM9000
878 bool
880 config SGI_HAS_DS1286
881 bool
883 config SGI_HAS_INDYDOG
884 bool
886 config SGI_HAS_HAL2
887 bool
889 config SGI_HAS_SEEQ
890 bool
892 config SGI_HAS_WD93
893 bool
895 config SGI_HAS_ZILOG
896 bool
898 config SGI_HAS_I8042
899 bool
901 config DEFAULT_SGI_PARTITION
902 bool
904 config ARC32
905 bool
907 config SNIPROM
908 bool
910 config BOOT_ELF32
911 bool
913 config MIPS_L1_CACHE_SHIFT
914 int
915 default "4" if MACH_DECSTATION || MIKROTIK_RB532
916 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM
917 default "4" if PMC_MSP4200_EVAL
918 default "5"
920 config HAVE_STD_PC_SERIAL_PORT
921 bool
923 config ARC_CONSOLE
924 bool "ARC console support"
925 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
927 config ARC_MEMORY
928 bool
929 depends on MACH_JAZZ || SNI_RM || SGI_IP32
930 default y
932 config ARC_PROMLIB
933 bool
934 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
935 default y
937 config ARC64
938 bool
940 config BOOT_ELF64
941 bool
943 menu "CPU selection"
945 choice
946 prompt "CPU type"
947 default CPU_R4X00
949 config CPU_LOONGSON2
950 bool "Loongson 2"
951 depends on SYS_HAS_CPU_LOONGSON2
952 select CPU_SUPPORTS_32BIT_KERNEL
953 select CPU_SUPPORTS_64BIT_KERNEL
954 select CPU_SUPPORTS_HIGHMEM
955 help
956 The Loongson 2E processor implements the MIPS III instruction set
957 with many extensions.
959 config CPU_MIPS32_R1
960 bool "MIPS32 Release 1"
961 depends on SYS_HAS_CPU_MIPS32_R1
962 select CPU_HAS_LLSC
963 select CPU_HAS_PREFETCH
964 select CPU_SUPPORTS_32BIT_KERNEL
965 select CPU_SUPPORTS_HIGHMEM
966 help
967 Choose this option to build a kernel for release 1 or later of the
968 MIPS32 architecture. Most modern embedded systems with a 32-bit
969 MIPS processor are based on a MIPS32 processor. If you know the
970 specific type of processor in your system, choose those that one
971 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
972 Release 2 of the MIPS32 architecture is available since several
973 years so chances are you even have a MIPS32 Release 2 processor
974 in which case you should choose CPU_MIPS32_R2 instead for better
975 performance.
977 config CPU_MIPS32_R2
978 bool "MIPS32 Release 2"
979 depends on SYS_HAS_CPU_MIPS32_R2
980 select CPU_HAS_LLSC
981 select CPU_HAS_PREFETCH
982 select CPU_SUPPORTS_32BIT_KERNEL
983 select CPU_SUPPORTS_HIGHMEM
984 help
985 Choose this option to build a kernel for release 2 or later of the
986 MIPS32 architecture. Most modern embedded systems with a 32-bit
987 MIPS processor are based on a MIPS32 processor. If you know the
988 specific type of processor in your system, choose those that one
989 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
991 config CPU_MIPS64_R1
992 bool "MIPS64 Release 1"
993 depends on SYS_HAS_CPU_MIPS64_R1
994 select CPU_HAS_LLSC
995 select CPU_HAS_PREFETCH
996 select CPU_SUPPORTS_32BIT_KERNEL
997 select CPU_SUPPORTS_64BIT_KERNEL
998 select CPU_SUPPORTS_HIGHMEM
999 help
1000 Choose this option to build a kernel for release 1 or later of the
1001 MIPS64 architecture. Many modern embedded systems with a 64-bit
1002 MIPS processor are based on a MIPS64 processor. If you know the
1003 specific type of processor in your system, choose those that one
1004 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1005 Release 2 of the MIPS64 architecture is available since several
1006 years so chances are you even have a MIPS64 Release 2 processor
1007 in which case you should choose CPU_MIPS64_R2 instead for better
1008 performance.
1010 config CPU_MIPS64_R2
1011 bool "MIPS64 Release 2"
1012 depends on SYS_HAS_CPU_MIPS64_R2
1013 select CPU_HAS_LLSC
1014 select CPU_HAS_PREFETCH
1015 select CPU_SUPPORTS_32BIT_KERNEL
1016 select CPU_SUPPORTS_64BIT_KERNEL
1017 select CPU_SUPPORTS_HIGHMEM
1018 help
1019 Choose this option to build a kernel for release 2 or later of the
1020 MIPS64 architecture. Many modern embedded systems with a 64-bit
1021 MIPS processor are based on a MIPS64 processor. If you know the
1022 specific type of processor in your system, choose those that one
1023 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1025 config CPU_R3000
1026 bool "R3000"
1027 depends on SYS_HAS_CPU_R3000
1028 select CPU_HAS_WB
1029 select CPU_SUPPORTS_32BIT_KERNEL
1030 select CPU_SUPPORTS_HIGHMEM
1031 help
1032 Please make sure to pick the right CPU type. Linux/MIPS is not
1033 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1034 *not* work on R4000 machines and vice versa. However, since most
1035 of the supported machines have an R4000 (or similar) CPU, R4x00
1036 might be a safe bet. If the resulting kernel does not work,
1037 try to recompile with R3000.
1039 config CPU_TX39XX
1040 bool "R39XX"
1041 depends on SYS_HAS_CPU_TX39XX
1042 select CPU_SUPPORTS_32BIT_KERNEL
1044 config CPU_VR41XX
1045 bool "R41xx"
1046 depends on SYS_HAS_CPU_VR41XX
1047 select CPU_SUPPORTS_32BIT_KERNEL
1048 select CPU_SUPPORTS_64BIT_KERNEL
1049 help
1050 The options selects support for the NEC VR4100 series of processors.
1051 Only choose this option if you have one of these processors as a
1052 kernel built with this option will not run on any other type of
1053 processor or vice versa.
1055 config CPU_R4300
1056 bool "R4300"
1057 depends on SYS_HAS_CPU_R4300
1058 select CPU_HAS_LLSC
1059 select CPU_SUPPORTS_32BIT_KERNEL
1060 select CPU_SUPPORTS_64BIT_KERNEL
1061 help
1062 MIPS Technologies R4300-series processors.
1064 config CPU_R4X00
1065 bool "R4x00"
1066 depends on SYS_HAS_CPU_R4X00
1067 select CPU_HAS_LLSC
1068 select CPU_SUPPORTS_32BIT_KERNEL
1069 select CPU_SUPPORTS_64BIT_KERNEL
1070 help
1071 MIPS Technologies R4000-series processors other than 4300, including
1072 the R4000, R4400, R4600, and 4700.
1074 config CPU_TX49XX
1075 bool "R49XX"
1076 depends on SYS_HAS_CPU_TX49XX
1077 select CPU_HAS_LLSC
1078 select CPU_HAS_PREFETCH
1079 select CPU_SUPPORTS_32BIT_KERNEL
1080 select CPU_SUPPORTS_64BIT_KERNEL
1082 config CPU_R5000
1083 bool "R5000"
1084 depends on SYS_HAS_CPU_R5000
1085 select CPU_HAS_LLSC
1086 select CPU_SUPPORTS_32BIT_KERNEL
1087 select CPU_SUPPORTS_64BIT_KERNEL
1088 help
1089 MIPS Technologies R5000-series processors other than the Nevada.
1091 config CPU_R5432
1092 bool "R5432"
1093 depends on SYS_HAS_CPU_R5432
1094 select CPU_HAS_LLSC
1095 select CPU_SUPPORTS_32BIT_KERNEL
1096 select CPU_SUPPORTS_64BIT_KERNEL
1098 config CPU_R6000
1099 bool "R6000"
1100 depends on EXPERIMENTAL
1101 select CPU_HAS_LLSC
1102 depends on SYS_HAS_CPU_R6000
1103 select CPU_SUPPORTS_32BIT_KERNEL
1104 help
1105 MIPS Technologies R6000 and R6000A series processors. Note these
1106 processors are extremely rare and the support for them is incomplete.
1108 config CPU_NEVADA
1109 bool "RM52xx"
1110 depends on SYS_HAS_CPU_NEVADA
1111 select CPU_HAS_LLSC
1112 select CPU_SUPPORTS_32BIT_KERNEL
1113 select CPU_SUPPORTS_64BIT_KERNEL
1114 help
1115 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1117 config CPU_R8000
1118 bool "R8000"
1119 depends on EXPERIMENTAL
1120 depends on SYS_HAS_CPU_R8000
1121 select CPU_HAS_LLSC
1122 select CPU_HAS_PREFETCH
1123 select CPU_SUPPORTS_64BIT_KERNEL
1124 help
1125 MIPS Technologies R8000 processors. Note these processors are
1126 uncommon and the support for them is incomplete.
1128 config CPU_R10000
1129 bool "R10000"
1130 depends on SYS_HAS_CPU_R10000
1131 select CPU_HAS_LLSC
1132 select CPU_HAS_PREFETCH
1133 select CPU_SUPPORTS_32BIT_KERNEL
1134 select CPU_SUPPORTS_64BIT_KERNEL
1135 select CPU_SUPPORTS_HIGHMEM
1136 help
1137 MIPS Technologies R10000-series processors.
1139 config CPU_RM7000
1140 bool "RM7000"
1141 depends on SYS_HAS_CPU_RM7000
1142 select CPU_HAS_LLSC
1143 select CPU_HAS_PREFETCH
1144 select CPU_SUPPORTS_32BIT_KERNEL
1145 select CPU_SUPPORTS_64BIT_KERNEL
1146 select CPU_SUPPORTS_HIGHMEM
1148 config CPU_RM9000
1149 bool "RM9000"
1150 depends on SYS_HAS_CPU_RM9000
1151 select CPU_HAS_LLSC
1152 select CPU_HAS_PREFETCH
1153 select CPU_SUPPORTS_32BIT_KERNEL
1154 select CPU_SUPPORTS_64BIT_KERNEL
1155 select CPU_SUPPORTS_HIGHMEM
1156 select WEAK_ORDERING
1158 config CPU_SB1
1159 bool "SB1"
1160 depends on SYS_HAS_CPU_SB1
1161 select CPU_HAS_LLSC
1162 select CPU_SUPPORTS_32BIT_KERNEL
1163 select CPU_SUPPORTS_64BIT_KERNEL
1164 select CPU_SUPPORTS_HIGHMEM
1165 select WEAK_ORDERING
1167 endchoice
1169 config SYS_HAS_CPU_LOONGSON2
1170 bool
1172 config SYS_HAS_CPU_MIPS32_R1
1173 bool
1175 config SYS_HAS_CPU_MIPS32_R2
1176 bool
1178 config SYS_HAS_CPU_MIPS64_R1
1179 bool
1181 config SYS_HAS_CPU_MIPS64_R2
1182 bool
1184 config SYS_HAS_CPU_R3000
1185 bool
1187 config SYS_HAS_CPU_TX39XX
1188 bool
1190 config SYS_HAS_CPU_VR41XX
1191 bool
1193 config SYS_HAS_CPU_R4300
1194 bool
1196 config SYS_HAS_CPU_R4X00
1197 bool
1199 config SYS_HAS_CPU_TX49XX
1200 bool
1202 config SYS_HAS_CPU_R5000
1203 bool
1205 config SYS_HAS_CPU_R5432
1206 bool
1208 config SYS_HAS_CPU_R6000
1209 bool
1211 config SYS_HAS_CPU_NEVADA
1212 bool
1214 config SYS_HAS_CPU_R8000
1215 bool
1217 config SYS_HAS_CPU_R10000
1218 bool
1220 config SYS_HAS_CPU_RM7000
1221 bool
1223 config SYS_HAS_CPU_RM9000
1224 bool
1226 config SYS_HAS_CPU_SB1
1227 bool
1229 #
1230 # CPU may reorder R->R, R->W, W->R, W->W
1231 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1232 #
1233 config WEAK_ORDERING
1234 bool
1236 #
1237 # CPU may reorder reads and writes beyond LL/SC
1238 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1239 #
1240 config WEAK_REORDERING_BEYOND_LLSC
1241 bool
1242 endmenu
1244 #
1245 # These two indicate any level of the MIPS32 and MIPS64 architecture
1246 #
1247 config CPU_MIPS32
1248 bool
1249 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1251 config CPU_MIPS64
1252 bool
1253 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1255 #
1256 # These two indicate the revision of the architecture, either Release 1 or Release 2
1257 #
1258 config CPU_MIPSR1
1259 bool
1260 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1262 config CPU_MIPSR2
1263 bool
1264 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1266 config SYS_SUPPORTS_32BIT_KERNEL
1267 bool
1268 config SYS_SUPPORTS_64BIT_KERNEL
1269 bool
1270 config CPU_SUPPORTS_32BIT_KERNEL
1271 bool
1272 config CPU_SUPPORTS_64BIT_KERNEL
1273 bool
1275 menu "Kernel type"
1277 choice
1279 prompt "Kernel code model"
1280 help
1281 You should only select this option if you have a workload that
1282 actually benefits from 64-bit processing or if your machine has
1283 large memory. You will only be presented a single option in this
1284 menu if your system does not support both 32-bit and 64-bit kernels.
1286 config 32BIT
1287 bool "32-bit kernel"
1288 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1289 select TRAD_SIGNALS
1290 help
1291 Select this option if you want to build a 32-bit kernel.
1292 config 64BIT
1293 bool "64-bit kernel"
1294 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1295 help
1296 Select this option if you want to build a 64-bit kernel.
1298 endchoice
1300 choice
1301 prompt "Kernel page size"
1302 default PAGE_SIZE_4KB
1304 config PAGE_SIZE_4KB
1305 bool "4kB"
1306 help
1307 This option select the standard 4kB Linux page size. On some
1308 R3000-family processors this is the only available page size. Using
1309 4kB page size will minimize memory consumption and is therefore
1310 recommended for low memory systems.
1312 config PAGE_SIZE_8KB
1313 bool "8kB"
1314 depends on EXPERIMENTAL && CPU_R8000
1315 help
1316 Using 8kB page size will result in higher performance kernel at
1317 the price of higher memory consumption. This option is available
1318 only on the R8000 processor. Not that at the time of this writing
1319 this option is still high experimental; there are also issues with
1320 compatibility of user applications.
1322 config PAGE_SIZE_16KB
1323 bool "16kB"
1324 depends on !CPU_R3000 && !CPU_TX39XX
1325 help
1326 Using 16kB page size will result in higher performance kernel at
1327 the price of higher memory consumption. This option is available on
1328 all non-R3000 family processors. Note that you will need a suitable
1329 Linux distribution to support this.
1331 config PAGE_SIZE_64KB
1332 bool "64kB"
1333 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1334 help
1335 Using 64kB page size will result in higher performance kernel at
1336 the price of higher memory consumption. This option is available on
1337 all non-R3000 family processor. Not that at the time of this
1338 writing this option is still high experimental.
1340 endchoice
1342 config BOARD_SCACHE
1343 bool
1345 config IP22_CPU_SCACHE
1346 bool
1347 select BOARD_SCACHE
1349 #
1350 # Support for a MIPS32 / MIPS64 style S-caches
1351 #
1352 config MIPS_CPU_SCACHE
1353 bool
1354 select BOARD_SCACHE
1356 config R5000_CPU_SCACHE
1357 bool
1358 select BOARD_SCACHE
1360 config RM7000_CPU_SCACHE
1361 bool
1362 select BOARD_SCACHE
1364 config SIBYTE_DMA_PAGEOPS
1365 bool "Use DMA to clear/copy pages"
1366 depends on CPU_SB1
1367 help
1368 Instead of using the CPU to zero and copy pages, use a Data Mover
1369 channel. These DMA channels are otherwise unused by the standard
1370 SiByte Linux port. Seems to give a small performance benefit.
1372 config CPU_HAS_PREFETCH
1373 bool
1375 choice
1376 prompt "MIPS MT options"
1378 config MIPS_MT_DISABLED
1379 bool "Disable multithreading support."
1380 help
1381 Use this option if your workload can't take advantage of
1382 MIPS hardware multithreading support. On systems that don't have
1383 the option of an MT-enabled processor this option will be the only
1384 option in this menu.
1386 config MIPS_MT_SMP
1387 bool "Use 1 TC on each available VPE for SMP"
1388 depends on SYS_SUPPORTS_MULTITHREADING
1389 select CPU_MIPSR2_IRQ_VI
1390 select CPU_MIPSR2_IRQ_EI
1391 select MIPS_MT
1392 select NR_CPUS_DEFAULT_2
1393 select SMP
1394 select SYS_SUPPORTS_SCHED_SMT if SMP
1395 select SYS_SUPPORTS_SMP
1396 select SMP_UP
1397 help
1398 This is a kernel model which is also known a VSMP or lately
1399 has been marketesed into SMVP.
1401 config MIPS_MT_SMTC
1402 bool "SMTC: Use all TCs on all VPEs for SMP"
1403 depends on CPU_MIPS32_R2
1404 #depends on CPU_MIPS64_R2 # once there is hardware ...
1405 depends on SYS_SUPPORTS_MULTITHREADING
1406 select GENERIC_CLOCKEVENTS_BROADCAST
1407 select CPU_MIPSR2_IRQ_VI
1408 select CPU_MIPSR2_IRQ_EI
1409 select MIPS_MT
1410 select NR_CPUS_DEFAULT_8
1411 select SMP
1412 select SYS_SUPPORTS_SMP
1413 select SMP_UP
1414 help
1415 This is a kernel model which is known a SMTC or lately has been
1416 marketesed into SMVP.
1418 endchoice
1420 config MIPS_MT
1421 bool
1423 config SCHED_SMT
1424 bool "SMT (multithreading) scheduler support"
1425 depends on SYS_SUPPORTS_SCHED_SMT
1426 default n
1427 help
1428 SMT scheduler support improves the CPU scheduler's decision making
1429 when dealing with MIPS MT enabled cores at a cost of slightly
1430 increased overhead in some places. If unsure say N here.
1432 config SYS_SUPPORTS_SCHED_SMT
1433 bool
1436 config SYS_SUPPORTS_MULTITHREADING
1437 bool
1439 config MIPS_MT_FPAFF
1440 bool "Dynamic FPU affinity for FP-intensive threads"
1441 default y
1442 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1444 config MIPS_VPE_LOADER
1445 bool "VPE loader support."
1446 depends on SYS_SUPPORTS_MULTITHREADING
1447 select CPU_MIPSR2_IRQ_VI
1448 select CPU_MIPSR2_IRQ_EI
1449 select MIPS_MT
1450 help
1451 Includes a loader for loading an elf relocatable object
1452 onto another VPE and running it.
1454 config MIPS_MT_SMTC_INSTANT_REPLAY
1455 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1456 depends on MIPS_MT_SMTC && !PREEMPT
1457 default y
1458 help
1459 SMTC pseudo-interrupts between TCs are deferred and queued
1460 if the target TC is interrupt-inhibited (IXMT). In the first
1461 SMTC prototypes, these queued IPIs were serviced on return
1462 to user mode, or on entry into the kernel idle loop. The
1463 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1464 processing, which adds runtime overhead (hence the option to turn
1465 it off), but ensures that IPIs are handled promptly even under
1466 heavy I/O interrupt load.
1468 config MIPS_MT_SMTC_IM_BACKSTOP
1469 bool "Use per-TC register bits as backstop for inhibited IM bits"
1470 depends on MIPS_MT_SMTC
1471 default y
1472 help
1473 To support multiple TC microthreads acting as "CPUs" within
1474 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1475 during interrupt handling. To support legacy drivers and interrupt
1476 controller management code, SMTC has a "backstop" to track and
1477 if necessary restore the interrupt mask. This has some performance
1478 impact on interrupt service overhead. Disable it only if you know
1479 what you are doing.
1481 config MIPS_MT_SMTC_IRQAFF
1482 bool "Support IRQ affinity API"
1483 depends on MIPS_MT_SMTC
1484 default n
1485 help
1486 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1487 for SMTC Linux kernel. Requires platform support, of which
1488 an example can be found in the MIPS kernel i8259 and Malta
1489 platform code. It is recommended that MIPS_MT_SMTC_INSTANT_REPLAY
1490 be enabled if MIPS_MT_SMTC_IRQAFF is used. Adds overhead to
1491 interrupt dispatch, and should be used only if you know what
1492 you are doing.
1494 config MIPS_VPE_LOADER_TOM
1495 bool "Load VPE program into memory hidden from linux"
1496 depends on MIPS_VPE_LOADER
1497 default y
1498 help
1499 The loader can use memory that is present but has been hidden from
1500 Linux using the kernel command line option "mem=xxMB". It's up to
1501 you to ensure the amount you put in the option and the space your
1502 program requires is less or equal to the amount physically present.
1504 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1505 config MIPS_VPE_APSP_API
1506 bool "Enable support for AP/SP API (RTLX)"
1507 depends on MIPS_VPE_LOADER
1508 help
1510 config MIPS_APSP_KSPD
1511 bool "Enable KSPD"
1512 depends on MIPS_VPE_APSP_API
1513 default y
1514 help
1515 KSPD is a kernel daemon that accepts syscall requests from the SP
1516 side, actions them and returns the results. It also handles the
1517 "exit" syscall notifying other kernel modules the SP program is
1518 exiting. You probably want to say yes here.
1520 config SB1_PASS_1_WORKAROUNDS
1521 bool
1522 depends on CPU_SB1_PASS_1
1523 default y
1525 config SB1_PASS_2_WORKAROUNDS
1526 bool
1527 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1528 default y
1530 config SB1_PASS_2_1_WORKAROUNDS
1531 bool
1532 depends on CPU_SB1 && CPU_SB1_PASS_2
1533 default y
1535 config 64BIT_PHYS_ADDR
1536 bool
1538 config CPU_HAS_LLSC
1539 bool
1541 config CPU_HAS_SMARTMIPS
1542 depends on SYS_SUPPORTS_SMARTMIPS
1543 bool "Support for the SmartMIPS ASE"
1544 help
1545 SmartMIPS is a extension of the MIPS32 architecture aimed at
1546 increased security at both hardware and software level for
1547 smartcards. Enabling this option will allow proper use of the
1548 SmartMIPS instructions by Linux applications. However a kernel with
1549 this option will not work on a MIPS core without SmartMIPS core. If
1550 you don't know you probably don't have SmartMIPS and should say N
1551 here.
1553 config CPU_HAS_WB
1554 bool
1556 #
1557 # Vectored interrupt mode is an R2 feature
1558 #
1559 config CPU_MIPSR2_IRQ_VI
1560 bool
1562 #
1563 # Extended interrupt mode is an R2 feature
1564 #
1565 config CPU_MIPSR2_IRQ_EI
1566 bool
1568 config CPU_HAS_SYNC
1569 bool
1570 depends on !CPU_R3000
1571 default y
1573 config GENERIC_CLOCKEVENTS_BROADCAST
1574 bool
1576 #
1577 # CPU non-features
1578 #
1579 config CPU_DADDI_WORKAROUNDS
1580 bool
1582 config CPU_R4000_WORKAROUNDS
1583 bool
1584 select CPU_R4400_WORKAROUNDS
1586 config CPU_R4400_WORKAROUNDS
1587 bool
1589 #
1590 # Use the generic interrupt handling code in kernel/irq/:
1591 #
1592 config GENERIC_HARDIRQS
1593 bool
1594 default y
1596 config GENERIC_IRQ_PROBE
1597 bool
1598 default y
1600 config IRQ_PER_CPU
1601 bool
1603 #
1604 # - Highmem only makes sense for the 32-bit kernel.
1605 # - The current highmem code will only work properly on physically indexed
1606 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1607 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1608 # moment we protect the user and offer the highmem option only on machines
1609 # where it's known to be safe. This will not offer highmem on a few systems
1610 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1611 # indexed CPUs but we're playing safe.
1612 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1613 # know they might have memory configurations that could make use of highmem
1614 # support.
1615 #
1616 config HIGHMEM
1617 bool "High Memory Support"
1618 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1620 config CPU_SUPPORTS_HIGHMEM
1621 bool
1623 config SYS_SUPPORTS_HIGHMEM
1624 bool
1626 config SYS_SUPPORTS_SMARTMIPS
1627 bool
1629 config ARCH_FLATMEM_ENABLE
1630 def_bool y
1631 depends on !NUMA
1633 config ARCH_DISCONTIGMEM_ENABLE
1634 bool
1635 default y if SGI_IP27
1636 help
1637 Say Y to support efficient handling of discontiguous physical memory,
1638 for architectures which are either NUMA (Non-Uniform Memory Access)
1639 or have huge holes in the physical address space for other reasons.
1640 See <file:Documentation/vm/numa> for more.
1642 config ARCH_POPULATES_NODE_MAP
1643 def_bool y
1645 config ARCH_SPARSEMEM_ENABLE
1646 bool
1647 select SPARSEMEM_STATIC
1649 config NUMA
1650 bool "NUMA Support"
1651 depends on SYS_SUPPORTS_NUMA
1652 help
1653 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1654 Access). This option improves performance on systems with more
1655 than two nodes; on two node systems it is generally better to
1656 leave it disabled; on single node systems disable this option
1657 disabled.
1659 config SYS_SUPPORTS_NUMA
1660 bool
1662 config NODES_SHIFT
1663 int
1664 default "6"
1665 depends on NEED_MULTIPLE_NODES
1667 source "mm/Kconfig"
1669 config SMP
1670 bool "Multi-Processing support"
1671 depends on SYS_SUPPORTS_SMP
1672 select IRQ_PER_CPU
1673 select USE_GENERIC_SMP_HELPERS
1674 help
1675 This enables support for systems with more than one CPU. If you have
1676 a system with only one CPU, like most personal computers, say N. If
1677 you have a system with more than one CPU, say Y.
1679 If you say N here, the kernel will run on single and multiprocessor
1680 machines, but will use only one CPU of a multiprocessor machine. If
1681 you say Y here, the kernel will run on many, but not all,
1682 singleprocessor machines. On a singleprocessor machine, the kernel
1683 will run faster if you say N here.
1685 People using multiprocessor machines who say Y here should also say
1686 Y to "Enhanced Real Time Clock Support", below.
1688 See also the SMP-HOWTO available at
1689 <http://www.tldp.org/docs.html#howto>.
1691 If you don't know what to do here, say N.
1693 config SMP_UP
1694 bool
1696 config SYS_SUPPORTS_SMP
1697 bool
1699 config NR_CPUS_DEFAULT_1
1700 bool
1702 config NR_CPUS_DEFAULT_2
1703 bool
1705 config NR_CPUS_DEFAULT_4
1706 bool
1708 config NR_CPUS_DEFAULT_8
1709 bool
1711 config NR_CPUS_DEFAULT_16
1712 bool
1714 config NR_CPUS_DEFAULT_32
1715 bool
1717 config NR_CPUS_DEFAULT_64
1718 bool
1720 config NR_CPUS
1721 int "Maximum number of CPUs (2-64)"
1722 range 1 64 if NR_CPUS_DEFAULT_1
1723 depends on SMP
1724 default "1" if NR_CPUS_DEFAULT_1
1725 default "2" if NR_CPUS_DEFAULT_2
1726 default "4" if NR_CPUS_DEFAULT_4
1727 default "8" if NR_CPUS_DEFAULT_8
1728 default "16" if NR_CPUS_DEFAULT_16
1729 default "32" if NR_CPUS_DEFAULT_32
1730 default "64" if NR_CPUS_DEFAULT_64
1731 help
1732 This allows you to specify the maximum number of CPUs which this
1733 kernel will support. The maximum supported value is 32 for 32-bit
1734 kernel and 64 for 64-bit kernels; the minimum value which makes
1735 sense is 1 for Qemu (useful only for kernel debugging purposes)
1736 and 2 for all others.
1738 This is purely to save memory - each supported CPU adds
1739 approximately eight kilobytes to the kernel image. For best
1740 performance should round up your number of processors to the next
1741 power of two.
1743 config MIPS_CMP
1744 bool "MIPS CMP framework support"
1745 depends on SMP
1746 select SYNC_R4K
1747 select SYS_SUPPORTS_SCHED_SMT
1748 select WEAK_ORDERING
1749 default n
1750 help
1751 This is a placeholder option for the GCMP work. It will need to
1752 be handled differently...
1754 source "kernel/time/Kconfig"
1756 #
1757 # Timer Interrupt Frequency Configuration
1758 #
1760 choice
1761 prompt "Timer frequency"
1762 default HZ_250
1763 help
1764 Allows the configuration of the timer frequency.
1766 config HZ_48
1767 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
1769 config HZ_100
1770 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1772 config HZ_128
1773 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1775 config HZ_250
1776 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1778 config HZ_256
1779 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1781 config HZ_1000
1782 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1784 config HZ_1024
1785 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1787 endchoice
1789 config SYS_SUPPORTS_48HZ
1790 bool
1792 config SYS_SUPPORTS_100HZ
1793 bool
1795 config SYS_SUPPORTS_128HZ
1796 bool
1798 config SYS_SUPPORTS_250HZ
1799 bool
1801 config SYS_SUPPORTS_256HZ
1802 bool
1804 config SYS_SUPPORTS_1000HZ
1805 bool
1807 config SYS_SUPPORTS_1024HZ
1808 bool
1810 config SYS_SUPPORTS_ARBIT_HZ
1811 bool
1812 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1813 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1814 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1815 !SYS_SUPPORTS_1024HZ
1817 config HZ
1818 int
1819 default 48 if HZ_48
1820 default 100 if HZ_100
1821 default 128 if HZ_128
1822 default 250 if HZ_250
1823 default 256 if HZ_256
1824 default 1000 if HZ_1000
1825 default 1024 if HZ_1024
1827 source "kernel/Kconfig.preempt"
1829 config MIPS_INSANE_LARGE
1830 bool "Support for large 64-bit configurations"
1831 depends on CPU_R10000 && 64BIT
1832 help
1833 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1834 previous 64-bit processors which only supported 40 bit / 1TB. If you
1835 need processes of more than 1TB virtual address space, say Y here.
1836 This will result in additional memory usage, so it is not
1837 recommended for normal users.
1839 config KEXEC
1840 bool "Kexec system call (EXPERIMENTAL)"
1841 depends on EXPERIMENTAL
1842 help
1843 kexec is a system call that implements the ability to shutdown your
1844 current kernel, and to start another kernel. It is like a reboot
1845 but it is independent of the system firmware. And like a reboot
1846 you can start any kernel with it, not just Linux.
1848 The name comes from the similarity to the exec system call.
1850 It is an ongoing process to be certain the hardware in a machine
1851 is properly shutdown, so do not be surprised if this code does not
1852 initially work for you. It may help to enable device hotplugging
1853 support. As of this writing the exact hardware interface is
1854 strongly in flux, so no good recommendation can be made.
1856 config SECCOMP
1857 bool "Enable seccomp to safely compute untrusted bytecode"
1858 depends on PROC_FS
1859 default y
1860 help
1861 This kernel feature is useful for number crunching applications
1862 that may need to compute untrusted bytecode during their
1863 execution. By using pipes or other transports made available to
1864 the process as file descriptors supporting the read/write
1865 syscalls, it's possible to isolate those applications in
1866 their own address space using seccomp. Once seccomp is
1867 enabled via /proc/<pid>/seccomp, it cannot be disabled
1868 and the task is only allowed to execute a few safe syscalls
1869 defined by each seccomp mode.
1871 If unsure, say Y. Only embedded should say N here.
1873 endmenu
1875 config RWSEM_GENERIC_SPINLOCK
1876 bool
1877 default y
1879 config LOCKDEP_SUPPORT
1880 bool
1881 default y
1883 config STACKTRACE_SUPPORT
1884 bool
1885 default y
1887 source "init/Kconfig"
1889 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1891 config HW_HAS_EISA
1892 bool
1893 config HW_HAS_PCI
1894 bool
1896 config PCI
1897 bool "Support for PCI controller"
1898 depends on HW_HAS_PCI
1899 select PCI_DOMAINS
1900 help
1901 Find out whether you have a PCI motherboard. PCI is the name of a
1902 bus system, i.e. the way the CPU talks to the other stuff inside
1903 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1904 say Y, otherwise N.
1906 config PCI_DOMAINS
1907 bool
1909 source "drivers/pci/Kconfig"
1911 #
1912 # ISA support is now enabled via select. Too many systems still have the one
1913 # or other ISA chip on the board that users don't know about so don't expect
1914 # users to choose the right thing ...
1915 #
1916 config ISA
1917 bool
1919 config EISA
1920 bool "EISA support"
1921 depends on HW_HAS_EISA
1922 select ISA
1923 select GENERIC_ISA_DMA
1924 ---help---
1925 The Extended Industry Standard Architecture (EISA) bus was
1926 developed as an open alternative to the IBM MicroChannel bus.
1928 The EISA bus provided some of the features of the IBM MicroChannel
1929 bus while maintaining backward compatibility with cards made for
1930 the older ISA bus. The EISA bus saw limited use between 1988 and
1931 1995 when it was made obsolete by the PCI bus.
1933 Say Y here if you are building a kernel for an EISA-based machine.
1935 Otherwise, say N.
1937 source "drivers/eisa/Kconfig"
1939 config TC
1940 bool "TURBOchannel support"
1941 depends on MACH_DECSTATION
1942 help
1943 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1944 processors. Documentation on writing device drivers for TurboChannel
1945 is available at:
1946 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1948 #config ACCESSBUS
1949 # bool "Access.Bus support"
1950 # depends on TC
1952 config MMU
1953 bool
1954 default y
1956 config I8253
1957 bool
1959 config ZONE_DMA32
1960 bool
1962 source "drivers/pcmcia/Kconfig"
1964 source "drivers/pci/hotplug/Kconfig"
1966 endmenu
1968 menu "Executable file formats"
1970 source "fs/Kconfig.binfmt"
1972 config TRAD_SIGNALS
1973 bool
1975 config MIPS32_COMPAT
1976 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
1977 depends on 64BIT
1978 help
1979 Select this option if you want Linux/MIPS 32-bit binary
1980 compatibility. Since all software available for Linux/MIPS is
1981 currently 32-bit you should say Y here.
1983 config COMPAT
1984 bool
1985 depends on MIPS32_COMPAT
1986 default y
1988 config SYSVIPC_COMPAT
1989 bool
1990 depends on COMPAT && SYSVIPC
1991 default y
1993 config MIPS32_O32
1994 bool "Kernel support for o32 binaries"
1995 depends on MIPS32_COMPAT
1996 help
1997 Select this option if you want to run o32 binaries. These are pure
1998 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
1999 existing binaries are in this format.
2001 If unsure, say Y.
2003 config MIPS32_N32
2004 bool "Kernel support for n32 binaries"
2005 depends on MIPS32_COMPAT
2006 help
2007 Select this option if you want to run n32 binaries. These are
2008 64-bit binaries using 32-bit quantities for addressing and certain
2009 data that would normally be 64-bit. They are used in special
2010 cases.
2012 If unsure, say N.
2014 config BINFMT_ELF32
2015 bool
2016 default y if MIPS32_O32 || MIPS32_N32
2018 endmenu
2020 menu "Power management options"
2022 config ARCH_SUSPEND_POSSIBLE
2023 def_bool y
2024 depends on !SMP
2026 source "kernel/power/Kconfig"
2028 endmenu
2030 source "net/Kconfig"
2032 source "drivers/Kconfig"
2034 source "fs/Kconfig"
2036 source "arch/mips/Kconfig.debug"
2038 source "security/Kconfig"
2040 source "crypto/Kconfig"
2042 source "lib/Kconfig"