| blob | 952f0517cec091ee1de876830e6ba0859a384f08 |
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_MIPS_CMP if BROKEN # because SYNC_R4K is broken
215 select SYS_SUPPORTS_MULTITHREADING
216 select SYS_SUPPORTS_SMARTMIPS
217 help
218 This enables support for the MIPS Technologies Malta evaluation
219 board.
221 config MIPS_SIM
222 bool 'MIPS simulator (MIPSsim)'
223 select CEVT_R4K
224 select CSRC_R4K
225 select DMA_NONCOHERENT
226 select SYS_HAS_EARLY_PRINTK
227 select IRQ_CPU
228 select BOOT_RAW
229 select SYS_HAS_CPU_MIPS32_R1
230 select SYS_HAS_CPU_MIPS32_R2
231 select SYS_HAS_EARLY_PRINTK
232 select SYS_SUPPORTS_32BIT_KERNEL
233 select SYS_SUPPORTS_BIG_ENDIAN
234 select SYS_SUPPORTS_MULTITHREADING
235 select SYS_SUPPORTS_LITTLE_ENDIAN
236 help
237 This option enables support for MIPS Technologies MIPSsim software
238 emulator.
240 config MARKEINS
241 bool "NEC EMMA2RH Mark-eins"
242 select CEVT_R4K
243 select CSRC_R4K
244 select DMA_NONCOHERENT
245 select HW_HAS_PCI
246 select IRQ_CPU
247 select SWAP_IO_SPACE
248 select SYS_SUPPORTS_32BIT_KERNEL
249 select SYS_SUPPORTS_BIG_ENDIAN
250 select SYS_SUPPORTS_LITTLE_ENDIAN
251 select SYS_HAS_CPU_R5000
252 help
253 This enables support for the R5432-based NEC Mark-eins
254 boards with R5500 CPU.
256 config MACH_VR41XX
257 bool "NEC VR4100 series based machines"
258 select CEVT_R4K
259 select CSRC_R4K
260 select SYS_HAS_CPU_VR41XX
261 select GENERIC_HARDIRQS_NO__DO_IRQ
263 config PNX8550_JBS
264 bool "NXP PNX8550 based JBS board"
265 select PNX8550
266 select SYS_SUPPORTS_LITTLE_ENDIAN
268 config PNX8550_STB810
269 bool "NXP PNX8550 based STB810 board"
270 select PNX8550
271 select SYS_SUPPORTS_LITTLE_ENDIAN
273 config PMC_MSP
274 bool "PMC-Sierra MSP chipsets"
275 depends on EXPERIMENTAL
276 select DMA_NONCOHERENT
277 select SWAP_IO_SPACE
278 select NO_EXCEPT_FILL
279 select BOOT_RAW
280 select SYS_HAS_CPU_MIPS32_R1
281 select SYS_HAS_CPU_MIPS32_R2
282 select SYS_SUPPORTS_32BIT_KERNEL
283 select SYS_SUPPORTS_BIG_ENDIAN
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.
293 config 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_SMP
310 help
311 Yosemite is an evaluation board for the RM9000x2 processor
312 manufactured by PMC-Sierra.
314 config SGI_IP22
315 bool "SGI IP22 (Indy/Indigo2)"
316 select ARC
317 select ARC32
318 select BOOT_ELF32
319 select CEVT_R4K
320 select CSRC_R4K
321 select DEFAULT_SGI_PARTITION
322 select DMA_NONCOHERENT
323 select HW_HAS_EISA
324 select I8253
325 select I8259
326 select IP22_CPU_SCACHE
327 select IRQ_CPU
328 select GENERIC_ISA_DMA_SUPPORT_BROKEN
329 select SGI_HAS_DS1286
330 select SGI_HAS_I8042
331 select SGI_HAS_INDYDOG
332 select SGI_HAS_HAL2
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.
348 config 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_NUMA
362 select SYS_SUPPORTS_SMP
363 select GENERIC_HARDIRQS_NO__DO_IRQ
364 help
365 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
366 workstations. To compile a Linux kernel that runs on these, say Y
367 here.
369 config SGI_IP28
370 bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
371 depends on EXPERIMENTAL
372 select ARC
373 select ARC64
374 select BOOT_ELF64
375 select CEVT_R4K
376 select CSRC_R4K
377 select DEFAULT_SGI_PARTITION
378 select DMA_NONCOHERENT
379 select GENERIC_ISA_DMA_SUPPORT_BROKEN
380 select IRQ_CPU
381 select HW_HAS_EISA
382 select I8253
383 select I8259
384 select SGI_HAS_DS1286
385 select SGI_HAS_I8042
386 select SGI_HAS_INDYDOG
387 select SGI_HAS_HAL2
388 select SGI_HAS_SEEQ
389 select SGI_HAS_WD93
390 select SGI_HAS_ZILOG
391 select SWAP_IO_SPACE
392 select SYS_HAS_CPU_R10000
393 select SYS_HAS_EARLY_PRINTK
394 select SYS_SUPPORTS_64BIT_KERNEL
395 select SYS_SUPPORTS_BIG_ENDIAN
396 help
397 This is the SGI Indigo2 with R10000 processor. To compile a Linux
398 kernel that runs on these, say Y here.
400 config SGI_IP32
401 bool "SGI IP32 (O2)"
402 select ARC
403 select ARC32
404 select BOOT_ELF32
405 select CEVT_R4K
406 select CSRC_R4K
407 select DMA_NONCOHERENT
408 select HW_HAS_PCI
409 select IRQ_CPU
410 select R5000_CPU_SCACHE
411 select RM7000_CPU_SCACHE
412 select SYS_HAS_CPU_R5000
413 select SYS_HAS_CPU_R10000 if BROKEN
414 select SYS_HAS_CPU_RM7000
415 select SYS_HAS_CPU_NEVADA
416 select SYS_SUPPORTS_64BIT_KERNEL
417 select SYS_SUPPORTS_BIG_ENDIAN
418 help
419 If you want this kernel to run on SGI O2 workstation, say Y here.
421 config SIBYTE_CRHINE
422 bool "Sibyte BCM91120C-CRhine"
423 depends on EXPERIMENTAL
424 select BOOT_ELF32
425 select DMA_COHERENT
426 select SIBYTE_BCM1120
427 select SWAP_IO_SPACE
428 select SYS_HAS_CPU_SB1
429 select SYS_SUPPORTS_BIG_ENDIAN
430 select SYS_SUPPORTS_LITTLE_ENDIAN
432 config SIBYTE_CARMEL
433 bool "Sibyte BCM91120x-Carmel"
434 depends on EXPERIMENTAL
435 select BOOT_ELF32
436 select DMA_COHERENT
437 select SIBYTE_BCM1120
438 select SWAP_IO_SPACE
439 select SYS_HAS_CPU_SB1
440 select SYS_SUPPORTS_BIG_ENDIAN
441 select SYS_SUPPORTS_LITTLE_ENDIAN
443 config SIBYTE_CRHONE
444 bool "Sibyte BCM91125C-CRhone"
445 depends on EXPERIMENTAL
446 select BOOT_ELF32
447 select DMA_COHERENT
448 select SIBYTE_BCM1125
449 select SWAP_IO_SPACE
450 select SYS_HAS_CPU_SB1
451 select SYS_SUPPORTS_BIG_ENDIAN
452 select SYS_SUPPORTS_HIGHMEM
453 select SYS_SUPPORTS_LITTLE_ENDIAN
455 config SIBYTE_RHONE
456 bool "Sibyte BCM91125E-Rhone"
457 depends on EXPERIMENTAL
458 select BOOT_ELF32
459 select DMA_COHERENT
460 select SIBYTE_BCM1125H
461 select SWAP_IO_SPACE
462 select SYS_HAS_CPU_SB1
463 select SYS_SUPPORTS_BIG_ENDIAN
464 select SYS_SUPPORTS_LITTLE_ENDIAN
466 config SIBYTE_SWARM
467 bool "Sibyte BCM91250A-SWARM"
468 select BOOT_ELF32
469 select DMA_COHERENT
470 select NR_CPUS_DEFAULT_2
471 select SIBYTE_SB1250
472 select SWAP_IO_SPACE
473 select SYS_HAS_CPU_SB1
474 select SYS_SUPPORTS_BIG_ENDIAN
475 select SYS_SUPPORTS_HIGHMEM
476 select SYS_SUPPORTS_LITTLE_ENDIAN
477 select ZONE_DMA32 if 64BIT
479 config SIBYTE_LITTLESUR
480 bool "Sibyte BCM91250C2-LittleSur"
481 depends on EXPERIMENTAL
482 select BOOT_ELF32
483 select DMA_COHERENT
484 select NR_CPUS_DEFAULT_2
485 select SIBYTE_SB1250
486 select SWAP_IO_SPACE
487 select SYS_HAS_CPU_SB1
488 select SYS_SUPPORTS_BIG_ENDIAN
489 select SYS_SUPPORTS_HIGHMEM
490 select SYS_SUPPORTS_LITTLE_ENDIAN
492 config SIBYTE_SENTOSA
493 bool "Sibyte BCM91250E-Sentosa"
494 depends on EXPERIMENTAL
495 select BOOT_ELF32
496 select DMA_COHERENT
497 select NR_CPUS_DEFAULT_2
498 select SIBYTE_SB1250
499 select SWAP_IO_SPACE
500 select SYS_HAS_CPU_SB1
501 select SYS_SUPPORTS_BIG_ENDIAN
502 select SYS_SUPPORTS_LITTLE_ENDIAN
504 config SIBYTE_BIGSUR
505 bool "Sibyte BCM91480B-BigSur"
506 select BOOT_ELF32
507 select DMA_COHERENT
508 select NR_CPUS_DEFAULT_4
509 select SIBYTE_BCM1x80
510 select SWAP_IO_SPACE
511 select SYS_HAS_CPU_SB1
512 select SYS_SUPPORTS_BIG_ENDIAN
513 select SYS_SUPPORTS_HIGHMEM
514 select SYS_SUPPORTS_LITTLE_ENDIAN
515 select ZONE_DMA32 if 64BIT
517 config SNI_RM
518 bool "SNI RM200/300/400"
519 select ARC if CPU_LITTLE_ENDIAN
520 select ARC32 if CPU_LITTLE_ENDIAN
521 select SNIPROM if CPU_BIG_ENDIAN
522 select ARCH_MAY_HAVE_PC_FDC
523 select BOOT_ELF32
524 select CEVT_R4K
525 select CSRC_R4K
526 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
527 select DMA_NONCOHERENT
528 select GENERIC_ISA_DMA
529 select HW_HAS_EISA
530 select HW_HAS_PCI
531 select IRQ_CPU
532 select I8253
533 select I8259
534 select ISA
535 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
536 select SYS_HAS_CPU_R4X00
537 select SYS_HAS_CPU_R5000
538 select SYS_HAS_CPU_R10000
539 select R5000_CPU_SCACHE
540 select SYS_HAS_EARLY_PRINTK
541 select SYS_SUPPORTS_32BIT_KERNEL
542 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
543 select SYS_SUPPORTS_BIG_ENDIAN
544 select SYS_SUPPORTS_HIGHMEM
545 select SYS_SUPPORTS_LITTLE_ENDIAN
546 help
547 The SNI RM200/300/400 are MIPS-based machines manufactured by
548 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
549 Technology and now in turn merged with Fujitsu. Say Y here to
550 support this machine type.
552 config MACH_TX39XX
553 bool "Toshiba TX39 series based machines"
555 config MACH_TX49XX
556 bool "Toshiba TX49 series based machines"
558 config MIKROTIK_RB532
559 bool "Mikrotik RB532 boards"
560 select CEVT_R4K
561 select CSRC_R4K
562 select DMA_NONCOHERENT
563 select GENERIC_HARDIRQS_NO__DO_IRQ
564 select HW_HAS_PCI
565 select IRQ_CPU
566 select SYS_HAS_CPU_MIPS32_R1
567 select SYS_SUPPORTS_32BIT_KERNEL
568 select SYS_SUPPORTS_LITTLE_ENDIAN
569 select SWAP_IO_SPACE
570 select BOOT_RAW
571 select GENERIC_GPIO
572 help
573 Support the Mikrotik(tm) RouterBoard 532 series,
574 based on the IDT RC32434 SoC.
576 config WR_PPMC
577 bool "Wind River PPMC board"
578 select CEVT_R4K
579 select CSRC_R4K
580 select IRQ_CPU
581 select BOOT_ELF32
582 select DMA_NONCOHERENT
583 select HW_HAS_PCI
584 select PCI_GT64XXX_PCI0
585 select SWAP_IO_SPACE
586 select SYS_HAS_CPU_MIPS32_R1
587 select SYS_HAS_CPU_MIPS32_R2
588 select SYS_HAS_CPU_MIPS64_R1
589 select SYS_HAS_CPU_NEVADA
590 select SYS_HAS_CPU_RM7000
591 select SYS_SUPPORTS_32BIT_KERNEL
592 select SYS_SUPPORTS_64BIT_KERNEL
593 select SYS_SUPPORTS_BIG_ENDIAN
594 select SYS_SUPPORTS_LITTLE_ENDIAN
595 help
596 This enables support for the Wind River MIPS32 4KC PPMC evaluation
597 board, which is based on GT64120 bridge chip.
599 endchoice
601 source "arch/mips/au1000/Kconfig"
602 source "arch/mips/basler/excite/Kconfig"
603 source "arch/mips/jazz/Kconfig"
604 source "arch/mips/lasat/Kconfig"
605 source "arch/mips/pmc-sierra/Kconfig"
606 source "arch/mips/sgi-ip27/Kconfig"
607 source "arch/mips/sibyte/Kconfig"
608 source "arch/mips/txx9/Kconfig"
609 source "arch/mips/vr41xx/Kconfig"
611 endmenu
613 config GENERIC_LOCKBREAK
614 bool
615 default y
616 depends on SMP && PREEMPT
618 config RWSEM_GENERIC_SPINLOCK
619 bool
620 default y
622 config RWSEM_XCHGADD_ALGORITHM
623 bool
625 config ARCH_HAS_ILOG2_U32
626 bool
627 default n
629 config ARCH_HAS_ILOG2_U64
630 bool
631 default n
633 config ARCH_SUPPORTS_OPROFILE
634 bool
635 default y if !MIPS_MT_SMTC
637 config GENERIC_FIND_NEXT_BIT
638 bool
639 default y
641 config GENERIC_HWEIGHT
642 bool
643 default y
645 config GENERIC_CALIBRATE_DELAY
646 bool
647 default y
649 config GENERIC_CLOCKEVENTS
650 bool
651 default y
653 config GENERIC_TIME
654 bool
655 default y
657 config GENERIC_CMOS_UPDATE
658 bool
659 default y
661 config SCHED_NO_NO_OMIT_FRAME_POINTER
662 bool
663 default y
665 config GENERIC_HARDIRQS_NO__DO_IRQ
666 bool
667 default n
669 #
670 # Select some configuration options automatically based on user selections.
671 #
672 config ARC
673 bool
675 config ARCH_MAY_HAVE_PC_FDC
676 bool
678 config BOOT_RAW
679 bool
681 config CEVT_BCM1480
682 bool
684 config CEVT_DS1287
685 bool
687 config CEVT_GT641XX
688 bool
690 config CEVT_R4K
691 bool
693 config CEVT_SB1250
694 bool
696 config CEVT_TXX9
697 bool
699 config CSRC_BCM1480
700 bool
702 config CSRC_IOASIC
703 bool
705 config CSRC_R4K
706 bool
708 config CSRC_SB1250
709 bool
711 config GPIO_TXX9
712 select GENERIC_GPIO
713 select ARCH_REQUIRE_GPIOLIB
714 bool
716 config CFE
717 bool
719 config DMA_COHERENT
720 bool
722 config DMA_IP27
723 bool
725 config DMA_NONCOHERENT
726 bool
727 select DMA_NEED_PCI_MAP_STATE
729 config DMA_NEED_PCI_MAP_STATE
730 bool
732 config EARLY_PRINTK
733 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
734 depends on SYS_HAS_EARLY_PRINTK
735 default y
736 help
737 This option enables special console drivers which allow the kernel
738 to print messages very early in the bootup process.
740 This is useful for kernel debugging when your machine crashes very
741 early before the console code is initialized. For normal operation,
742 it is not recommended because it looks ugly on some machines and
743 doesn't cooperate with an X server. You should normally say N here,
744 unless you want to debug such a crash.
746 config SYS_HAS_EARLY_PRINTK
747 bool
749 config HOTPLUG_CPU
750 bool
751 default n
753 config I8259
754 bool
756 config MIPS_BONITO64
757 bool
759 config MIPS_MSC
760 bool
762 config MIPS_NILE4
763 bool
765 config MIPS_DISABLE_OBSOLETE_IDE
766 bool
768 config SYNC_R4K
769 bool
771 config NO_IOPORT
772 def_bool n
774 config GENERIC_ISA_DMA
775 bool
776 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
778 config GENERIC_ISA_DMA_SUPPORT_BROKEN
779 bool
780 select GENERIC_ISA_DMA
782 config GENERIC_GPIO
783 bool
785 #
786 # Endianess selection. Sufficiently obscure so many users don't know what to
787 # answer,so we try hard to limit the available choices. Also the use of a
788 # choice statement should be more obvious to the user.
789 #
790 choice
791 prompt "Endianess selection"
792 help
793 Some MIPS machines can be configured for either little or big endian
794 byte order. These modes require different kernels and a different
795 Linux distribution. In general there is one preferred byteorder for a
796 particular system but some systems are just as commonly used in the
797 one or the other endianness.
799 config CPU_BIG_ENDIAN
800 bool "Big endian"
801 depends on SYS_SUPPORTS_BIG_ENDIAN
803 config CPU_LITTLE_ENDIAN
804 bool "Little endian"
805 depends on SYS_SUPPORTS_LITTLE_ENDIAN
806 help
808 endchoice
810 config SYS_SUPPORTS_APM_EMULATION
811 bool
813 config SYS_SUPPORTS_BIG_ENDIAN
814 bool
816 config SYS_SUPPORTS_LITTLE_ENDIAN
817 bool
819 config IRQ_CPU
820 bool
822 config IRQ_CPU_RM7K
823 bool
825 config IRQ_CPU_RM9K
826 bool
828 config IRQ_MSP_SLP
829 bool
831 config IRQ_MSP_CIC
832 bool
834 config IRQ_TXX9
835 bool
837 config IRQ_GT641XX
838 bool
840 config IRQ_GIC
841 bool
843 config MIPS_BOARDS_GEN
844 bool
846 config PCI_GT64XXX_PCI0
847 bool
849 config NO_EXCEPT_FILL
850 bool
852 config MIPS_RM9122
853 bool
854 select SERIAL_RM9000
856 config PNX8550
857 bool
858 select SOC_PNX8550
860 config SOC_PNX8550
861 bool
862 select DMA_NONCOHERENT
863 select HW_HAS_PCI
864 select SYS_HAS_CPU_MIPS32_R1
865 select SYS_HAS_EARLY_PRINTK
866 select SYS_SUPPORTS_32BIT_KERNEL
867 select GENERIC_HARDIRQS_NO__DO_IRQ
868 select GENERIC_GPIO
870 config SWAP_IO_SPACE
871 bool
873 config EMMA2RH
874 bool
875 depends on MARKEINS
876 default y
878 config SERIAL_RM9000
879 bool
881 config SGI_HAS_DS1286
882 bool
884 config SGI_HAS_INDYDOG
885 bool
887 config SGI_HAS_HAL2
888 bool
890 config SGI_HAS_SEEQ
891 bool
893 config SGI_HAS_WD93
894 bool
896 config SGI_HAS_ZILOG
897 bool
899 config SGI_HAS_I8042
900 bool
902 config DEFAULT_SGI_PARTITION
903 bool
905 config ARC32
906 bool
908 config SNIPROM
909 bool
911 config BOOT_ELF32
912 bool
914 config MIPS_L1_CACHE_SHIFT
915 int
916 default "4" if MACH_DECSTATION || MIKROTIK_RB532
917 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM
918 default "4" if PMC_MSP4200_EVAL
919 default "5"
921 config HAVE_STD_PC_SERIAL_PORT
922 bool
924 config ARC_CONSOLE
925 bool "ARC console support"
926 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
928 config ARC_MEMORY
929 bool
930 depends on MACH_JAZZ || SNI_RM || SGI_IP32
931 default y
933 config ARC_PROMLIB
934 bool
935 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
936 default y
938 config ARC64
939 bool
941 config BOOT_ELF64
942 bool
944 menu "CPU selection"
946 choice
947 prompt "CPU type"
948 default CPU_R4X00
950 config CPU_LOONGSON2
951 bool "Loongson 2"
952 depends on SYS_HAS_CPU_LOONGSON2
953 select CPU_SUPPORTS_32BIT_KERNEL
954 select CPU_SUPPORTS_64BIT_KERNEL
955 select CPU_SUPPORTS_HIGHMEM
956 help
957 The Loongson 2E processor implements the MIPS III instruction set
958 with many extensions.
960 config CPU_MIPS32_R1
961 bool "MIPS32 Release 1"
962 depends on SYS_HAS_CPU_MIPS32_R1
963 select CPU_HAS_LLSC
964 select CPU_HAS_PREFETCH
965 select CPU_SUPPORTS_32BIT_KERNEL
966 select CPU_SUPPORTS_HIGHMEM
967 help
968 Choose this option to build a kernel for release 1 or later of the
969 MIPS32 architecture. Most modern embedded systems with a 32-bit
970 MIPS processor are based on a MIPS32 processor. If you know the
971 specific type of processor in your system, choose those that one
972 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
973 Release 2 of the MIPS32 architecture is available since several
974 years so chances are you even have a MIPS32 Release 2 processor
975 in which case you should choose CPU_MIPS32_R2 instead for better
976 performance.
978 config CPU_MIPS32_R2
979 bool "MIPS32 Release 2"
980 depends on SYS_HAS_CPU_MIPS32_R2
981 select CPU_HAS_LLSC
982 select CPU_HAS_PREFETCH
983 select CPU_SUPPORTS_32BIT_KERNEL
984 select CPU_SUPPORTS_HIGHMEM
985 help
986 Choose this option to build a kernel for release 2 or later of the
987 MIPS32 architecture. Most modern embedded systems with a 32-bit
988 MIPS processor are based on a MIPS32 processor. If you know the
989 specific type of processor in your system, choose those that one
990 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
992 config CPU_MIPS64_R1
993 bool "MIPS64 Release 1"
994 depends on SYS_HAS_CPU_MIPS64_R1
995 select CPU_HAS_LLSC
996 select CPU_HAS_PREFETCH
997 select CPU_SUPPORTS_32BIT_KERNEL
998 select CPU_SUPPORTS_64BIT_KERNEL
999 select CPU_SUPPORTS_HIGHMEM
1000 help
1001 Choose this option to build a kernel for release 1 or later of the
1002 MIPS64 architecture. Many modern embedded systems with a 64-bit
1003 MIPS processor are based on a MIPS64 processor. If you know the
1004 specific type of processor in your system, choose those that one
1005 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1006 Release 2 of the MIPS64 architecture is available since several
1007 years so chances are you even have a MIPS64 Release 2 processor
1008 in which case you should choose CPU_MIPS64_R2 instead for better
1009 performance.
1011 config CPU_MIPS64_R2
1012 bool "MIPS64 Release 2"
1013 depends on SYS_HAS_CPU_MIPS64_R2
1014 select CPU_HAS_LLSC
1015 select CPU_HAS_PREFETCH
1016 select CPU_SUPPORTS_32BIT_KERNEL
1017 select CPU_SUPPORTS_64BIT_KERNEL
1018 select CPU_SUPPORTS_HIGHMEM
1019 help
1020 Choose this option to build a kernel for release 2 or later of the
1021 MIPS64 architecture. Many modern embedded systems with a 64-bit
1022 MIPS processor are based on a MIPS64 processor. If you know the
1023 specific type of processor in your system, choose those that one
1024 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1026 config CPU_R3000
1027 bool "R3000"
1028 depends on SYS_HAS_CPU_R3000
1029 select CPU_HAS_WB
1030 select CPU_SUPPORTS_32BIT_KERNEL
1031 select CPU_SUPPORTS_HIGHMEM
1032 help
1033 Please make sure to pick the right CPU type. Linux/MIPS is not
1034 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1035 *not* work on R4000 machines and vice versa. However, since most
1036 of the supported machines have an R4000 (or similar) CPU, R4x00
1037 might be a safe bet. If the resulting kernel does not work,
1038 try to recompile with R3000.
1040 config CPU_TX39XX
1041 bool "R39XX"
1042 depends on SYS_HAS_CPU_TX39XX
1043 select CPU_SUPPORTS_32BIT_KERNEL
1045 config CPU_VR41XX
1046 bool "R41xx"
1047 depends on SYS_HAS_CPU_VR41XX
1048 select CPU_SUPPORTS_32BIT_KERNEL
1049 select CPU_SUPPORTS_64BIT_KERNEL
1050 help
1051 The options selects support for the NEC VR4100 series of processors.
1052 Only choose this option if you have one of these processors as a
1053 kernel built with this option will not run on any other type of
1054 processor or vice versa.
1056 config CPU_R4300
1057 bool "R4300"
1058 depends on SYS_HAS_CPU_R4300
1059 select CPU_HAS_LLSC
1060 select CPU_SUPPORTS_32BIT_KERNEL
1061 select CPU_SUPPORTS_64BIT_KERNEL
1062 help
1063 MIPS Technologies R4300-series processors.
1065 config CPU_R4X00
1066 bool "R4x00"
1067 depends on SYS_HAS_CPU_R4X00
1068 select CPU_HAS_LLSC
1069 select CPU_SUPPORTS_32BIT_KERNEL
1070 select CPU_SUPPORTS_64BIT_KERNEL
1071 help
1072 MIPS Technologies R4000-series processors other than 4300, including
1073 the R4000, R4400, R4600, and 4700.
1075 config CPU_TX49XX
1076 bool "R49XX"
1077 depends on SYS_HAS_CPU_TX49XX
1078 select CPU_HAS_LLSC
1079 select CPU_HAS_PREFETCH
1080 select CPU_SUPPORTS_32BIT_KERNEL
1081 select CPU_SUPPORTS_64BIT_KERNEL
1083 config CPU_R5000
1084 bool "R5000"
1085 depends on SYS_HAS_CPU_R5000
1086 select CPU_HAS_LLSC
1087 select CPU_SUPPORTS_32BIT_KERNEL
1088 select CPU_SUPPORTS_64BIT_KERNEL
1089 help
1090 MIPS Technologies R5000-series processors other than the Nevada.
1092 config CPU_R5432
1093 bool "R5432"
1094 depends on SYS_HAS_CPU_R5432
1095 select CPU_HAS_LLSC
1096 select CPU_SUPPORTS_32BIT_KERNEL
1097 select CPU_SUPPORTS_64BIT_KERNEL
1099 config CPU_R6000
1100 bool "R6000"
1101 depends on EXPERIMENTAL
1102 select CPU_HAS_LLSC
1103 depends on SYS_HAS_CPU_R6000
1104 select CPU_SUPPORTS_32BIT_KERNEL
1105 help
1106 MIPS Technologies R6000 and R6000A series processors. Note these
1107 processors are extremely rare and the support for them is incomplete.
1109 config CPU_NEVADA
1110 bool "RM52xx"
1111 depends on SYS_HAS_CPU_NEVADA
1112 select CPU_HAS_LLSC
1113 select CPU_SUPPORTS_32BIT_KERNEL
1114 select CPU_SUPPORTS_64BIT_KERNEL
1115 help
1116 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1118 config CPU_R8000
1119 bool "R8000"
1120 depends on EXPERIMENTAL
1121 depends on SYS_HAS_CPU_R8000
1122 select CPU_HAS_LLSC
1123 select CPU_HAS_PREFETCH
1124 select CPU_SUPPORTS_64BIT_KERNEL
1125 help
1126 MIPS Technologies R8000 processors. Note these processors are
1127 uncommon and the support for them is incomplete.
1129 config CPU_R10000
1130 bool "R10000"
1131 depends on SYS_HAS_CPU_R10000
1132 select CPU_HAS_LLSC
1133 select CPU_HAS_PREFETCH
1134 select CPU_SUPPORTS_32BIT_KERNEL
1135 select CPU_SUPPORTS_64BIT_KERNEL
1136 select CPU_SUPPORTS_HIGHMEM
1137 help
1138 MIPS Technologies R10000-series processors.
1140 config CPU_RM7000
1141 bool "RM7000"
1142 depends on SYS_HAS_CPU_RM7000
1143 select CPU_HAS_LLSC
1144 select CPU_HAS_PREFETCH
1145 select CPU_SUPPORTS_32BIT_KERNEL
1146 select CPU_SUPPORTS_64BIT_KERNEL
1147 select CPU_SUPPORTS_HIGHMEM
1149 config CPU_RM9000
1150 bool "RM9000"
1151 depends on SYS_HAS_CPU_RM9000
1152 select CPU_HAS_LLSC
1153 select CPU_HAS_PREFETCH
1154 select CPU_SUPPORTS_32BIT_KERNEL
1155 select CPU_SUPPORTS_64BIT_KERNEL
1156 select CPU_SUPPORTS_HIGHMEM
1157 select WEAK_ORDERING
1159 config CPU_SB1
1160 bool "SB1"
1161 depends on SYS_HAS_CPU_SB1
1162 select CPU_HAS_LLSC
1163 select CPU_SUPPORTS_32BIT_KERNEL
1164 select CPU_SUPPORTS_64BIT_KERNEL
1165 select CPU_SUPPORTS_HIGHMEM
1166 select WEAK_ORDERING
1168 endchoice
1170 config SYS_HAS_CPU_LOONGSON2
1171 bool
1173 config SYS_HAS_CPU_MIPS32_R1
1174 bool
1176 config SYS_HAS_CPU_MIPS32_R2
1177 bool
1179 config SYS_HAS_CPU_MIPS64_R1
1180 bool
1182 config SYS_HAS_CPU_MIPS64_R2
1183 bool
1185 config SYS_HAS_CPU_R3000
1186 bool
1188 config SYS_HAS_CPU_TX39XX
1189 bool
1191 config SYS_HAS_CPU_VR41XX
1192 bool
1194 config SYS_HAS_CPU_R4300
1195 bool
1197 config SYS_HAS_CPU_R4X00
1198 bool
1200 config SYS_HAS_CPU_TX49XX
1201 bool
1203 config SYS_HAS_CPU_R5000
1204 bool
1206 config SYS_HAS_CPU_R5432
1207 bool
1209 config SYS_HAS_CPU_R6000
1210 bool
1212 config SYS_HAS_CPU_NEVADA
1213 bool
1215 config SYS_HAS_CPU_R8000
1216 bool
1218 config SYS_HAS_CPU_R10000
1219 bool
1221 config SYS_HAS_CPU_RM7000
1222 bool
1224 config SYS_HAS_CPU_RM9000
1225 bool
1227 config SYS_HAS_CPU_SB1
1228 bool
1230 #
1231 # CPU may reorder R->R, R->W, W->R, W->W
1232 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1233 #
1234 config WEAK_ORDERING
1235 bool
1237 #
1238 # CPU may reorder reads and writes beyond LL/SC
1239 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1240 #
1241 config WEAK_REORDERING_BEYOND_LLSC
1242 bool
1243 endmenu
1245 #
1246 # These two indicate any level of the MIPS32 and MIPS64 architecture
1247 #
1248 config CPU_MIPS32
1249 bool
1250 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1252 config CPU_MIPS64
1253 bool
1254 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1256 #
1257 # These two indicate the revision of the architecture, either Release 1 or Release 2
1258 #
1259 config CPU_MIPSR1
1260 bool
1261 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1263 config CPU_MIPSR2
1264 bool
1265 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1267 config SYS_SUPPORTS_32BIT_KERNEL
1268 bool
1269 config SYS_SUPPORTS_64BIT_KERNEL
1270 bool
1271 config CPU_SUPPORTS_32BIT_KERNEL
1272 bool
1273 config CPU_SUPPORTS_64BIT_KERNEL
1274 bool
1276 menu "Kernel type"
1278 choice
1280 prompt "Kernel code model"
1281 help
1282 You should only select this option if you have a workload that
1283 actually benefits from 64-bit processing or if your machine has
1284 large memory. You will only be presented a single option in this
1285 menu if your system does not support both 32-bit and 64-bit kernels.
1287 config 32BIT
1288 bool "32-bit kernel"
1289 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1290 select TRAD_SIGNALS
1291 help
1292 Select this option if you want to build a 32-bit kernel.
1293 config 64BIT
1294 bool "64-bit kernel"
1295 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1296 select HAVE_SYSCALL_WRAPPERS
1297 help
1298 Select this option if you want to build a 64-bit kernel.
1300 endchoice
1302 choice
1303 prompt "Kernel page size"
1304 default PAGE_SIZE_4KB
1306 config PAGE_SIZE_4KB
1307 bool "4kB"
1308 help
1309 This option select the standard 4kB Linux page size. On some
1310 R3000-family processors this is the only available page size. Using
1311 4kB page size will minimize memory consumption and is therefore
1312 recommended for low memory systems.
1314 config PAGE_SIZE_8KB
1315 bool "8kB"
1316 depends on EXPERIMENTAL && CPU_R8000
1317 help
1318 Using 8kB page size will result in higher performance kernel at
1319 the price of higher memory consumption. This option is available
1320 only on the R8000 processor. Not that at the time of this writing
1321 this option is still high experimental; there are also issues with
1322 compatibility of user applications.
1324 config PAGE_SIZE_16KB
1325 bool "16kB"
1326 depends on !CPU_R3000 && !CPU_TX39XX
1327 help
1328 Using 16kB page size will result in higher performance kernel at
1329 the price of higher memory consumption. This option is available on
1330 all non-R3000 family processors. Note that you will need a suitable
1331 Linux distribution to support this.
1333 config PAGE_SIZE_64KB
1334 bool "64kB"
1335 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1336 help
1337 Using 64kB page size will result in higher performance kernel at
1338 the price of higher memory consumption. This option is available on
1339 all non-R3000 family processor. Not that at the time of this
1340 writing this option is still high experimental.
1342 endchoice
1344 config BOARD_SCACHE
1345 bool
1347 config IP22_CPU_SCACHE
1348 bool
1349 select BOARD_SCACHE
1351 #
1352 # Support for a MIPS32 / MIPS64 style S-caches
1353 #
1354 config MIPS_CPU_SCACHE
1355 bool
1356 select BOARD_SCACHE
1358 config R5000_CPU_SCACHE
1359 bool
1360 select BOARD_SCACHE
1362 config RM7000_CPU_SCACHE
1363 bool
1364 select BOARD_SCACHE
1366 config SIBYTE_DMA_PAGEOPS
1367 bool "Use DMA to clear/copy pages"
1368 depends on CPU_SB1
1369 help
1370 Instead of using the CPU to zero and copy pages, use a Data Mover
1371 channel. These DMA channels are otherwise unused by the standard
1372 SiByte Linux port. Seems to give a small performance benefit.
1374 config CPU_HAS_PREFETCH
1375 bool
1377 choice
1378 prompt "MIPS MT options"
1380 config MIPS_MT_DISABLED
1381 bool "Disable multithreading support."
1382 help
1383 Use this option if your workload can't take advantage of
1384 MIPS hardware multithreading support. On systems that don't have
1385 the option of an MT-enabled processor this option will be the only
1386 option in this menu.
1388 config MIPS_MT_SMP
1389 bool "Use 1 TC on each available VPE for SMP"
1390 depends on SYS_SUPPORTS_MULTITHREADING
1391 select CPU_MIPSR2_IRQ_VI
1392 select CPU_MIPSR2_IRQ_EI
1393 select MIPS_MT
1394 select NR_CPUS_DEFAULT_2
1395 select SMP
1396 select SYS_SUPPORTS_SCHED_SMT if SMP
1397 select SYS_SUPPORTS_SMP
1398 select SMP_UP
1399 help
1400 This is a kernel model which is also known a VSMP or lately
1401 has been marketesed into SMVP.
1403 config MIPS_MT_SMTC
1404 bool "SMTC: Use all TCs on all VPEs for SMP"
1405 depends on CPU_MIPS32_R2
1406 #depends on CPU_MIPS64_R2 # once there is hardware ...
1407 depends on SYS_SUPPORTS_MULTITHREADING
1408 select CPU_MIPSR2_IRQ_VI
1409 select CPU_MIPSR2_IRQ_EI
1410 select MIPS_MT
1411 select NR_CPUS_DEFAULT_8
1412 select SMP
1413 select SYS_SUPPORTS_SMP
1414 select SMP_UP
1415 help
1416 This is a kernel model which is known a SMTC or lately has been
1417 marketesed into SMVP.
1419 endchoice
1421 config MIPS_MT
1422 bool
1424 config SCHED_SMT
1425 bool "SMT (multithreading) scheduler support"
1426 depends on SYS_SUPPORTS_SCHED_SMT
1427 default n
1428 help
1429 SMT scheduler support improves the CPU scheduler's decision making
1430 when dealing with MIPS MT enabled cores at a cost of slightly
1431 increased overhead in some places. If unsure say N here.
1433 config SYS_SUPPORTS_SCHED_SMT
1434 bool
1437 config SYS_SUPPORTS_MULTITHREADING
1438 bool
1440 config MIPS_MT_FPAFF
1441 bool "Dynamic FPU affinity for FP-intensive threads"
1442 default y
1443 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1445 config MIPS_VPE_LOADER
1446 bool "VPE loader support."
1447 depends on SYS_SUPPORTS_MULTITHREADING
1448 select CPU_MIPSR2_IRQ_VI
1449 select CPU_MIPSR2_IRQ_EI
1450 select MIPS_MT
1451 help
1452 Includes a loader for loading an elf relocatable object
1453 onto another VPE and running it.
1455 config 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 n
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.
1467 config MIPS_MT_SMTC_IRQAFF
1468 bool "Support IRQ affinity API"
1469 depends on MIPS_MT_SMTC
1470 default n
1471 help
1472 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1473 for SMTC Linux kernel. Requires platform support, of which
1474 an example can be found in the MIPS kernel i8259 and Malta
1475 platform code. Adds some overhead to interrupt dispatch, and
1476 should be used only if you know what you are doing.
1478 config MIPS_VPE_LOADER_TOM
1479 bool "Load VPE program into memory hidden from linux"
1480 depends on MIPS_VPE_LOADER
1481 default y
1482 help
1483 The loader can use memory that is present but has been hidden from
1484 Linux using the kernel command line option "mem=xxMB". It's up to
1485 you to ensure the amount you put in the option and the space your
1486 program requires is less or equal to the amount physically present.
1488 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1489 config MIPS_VPE_APSP_API
1490 bool "Enable support for AP/SP API (RTLX)"
1491 depends on MIPS_VPE_LOADER
1492 help
1494 config MIPS_APSP_KSPD
1495 bool "Enable KSPD"
1496 depends on MIPS_VPE_APSP_API
1497 default y
1498 help
1499 KSPD is a kernel daemon that accepts syscall requests from the SP
1500 side, actions them and returns the results. It also handles the
1501 "exit" syscall notifying other kernel modules the SP program is
1502 exiting. You probably want to say yes here.
1504 config MIPS_CMP
1505 bool "MIPS CMP framework support"
1506 depends on SYS_SUPPORTS_MIPS_CMP
1507 select SYNC_R4K if BROKEN
1508 select SYS_SUPPORTS_SMP
1509 select SYS_SUPPORTS_SCHED_SMT if SMP
1510 select WEAK_ORDERING
1511 default n
1512 help
1513 This is a placeholder option for the GCMP work. It will need to
1514 be handled differently...
1516 config SB1_PASS_1_WORKAROUNDS
1517 bool
1518 depends on CPU_SB1_PASS_1
1519 default y
1521 config SB1_PASS_2_WORKAROUNDS
1522 bool
1523 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1524 default y
1526 config SB1_PASS_2_1_WORKAROUNDS
1527 bool
1528 depends on CPU_SB1 && CPU_SB1_PASS_2
1529 default y
1531 config 64BIT_PHYS_ADDR
1532 bool
1534 config CPU_HAS_LLSC
1535 bool
1537 config CPU_HAS_SMARTMIPS
1538 depends on SYS_SUPPORTS_SMARTMIPS
1539 bool "Support for the SmartMIPS ASE"
1540 help
1541 SmartMIPS is a extension of the MIPS32 architecture aimed at
1542 increased security at both hardware and software level for
1543 smartcards. Enabling this option will allow proper use of the
1544 SmartMIPS instructions by Linux applications. However a kernel with
1545 this option will not work on a MIPS core without SmartMIPS core. If
1546 you don't know you probably don't have SmartMIPS and should say N
1547 here.
1549 config CPU_HAS_WB
1550 bool
1552 #
1553 # Vectored interrupt mode is an R2 feature
1554 #
1555 config CPU_MIPSR2_IRQ_VI
1556 bool
1558 #
1559 # Extended interrupt mode is an R2 feature
1560 #
1561 config CPU_MIPSR2_IRQ_EI
1562 bool
1564 config CPU_HAS_SYNC
1565 bool
1566 depends on !CPU_R3000
1567 default y
1569 config GENERIC_CLOCKEVENTS_BROADCAST
1570 bool
1572 #
1573 # CPU non-features
1574 #
1575 config CPU_DADDI_WORKAROUNDS
1576 bool
1578 config CPU_R4000_WORKAROUNDS
1579 bool
1580 select CPU_R4400_WORKAROUNDS
1582 config CPU_R4400_WORKAROUNDS
1583 bool
1585 #
1586 # Use the generic interrupt handling code in kernel/irq/:
1587 #
1588 config GENERIC_HARDIRQS
1589 bool
1590 default y
1592 config GENERIC_IRQ_PROBE
1593 bool
1594 default y
1596 config IRQ_PER_CPU
1597 bool
1599 #
1600 # - Highmem only makes sense for the 32-bit kernel.
1601 # - The current highmem code will only work properly on physically indexed
1602 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1603 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1604 # moment we protect the user and offer the highmem option only on machines
1605 # where it's known to be safe. This will not offer highmem on a few systems
1606 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1607 # indexed CPUs but we're playing safe.
1608 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1609 # know they might have memory configurations that could make use of highmem
1610 # support.
1611 #
1612 config HIGHMEM
1613 bool "High Memory Support"
1614 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1616 config CPU_SUPPORTS_HIGHMEM
1617 bool
1619 config SYS_SUPPORTS_HIGHMEM
1620 bool
1622 config SYS_SUPPORTS_SMARTMIPS
1623 bool
1625 config ARCH_FLATMEM_ENABLE
1626 def_bool y
1627 depends on !NUMA
1629 config ARCH_DISCONTIGMEM_ENABLE
1630 bool
1631 default y if SGI_IP27
1632 help
1633 Say Y to support efficient handling of discontiguous physical memory,
1634 for architectures which are either NUMA (Non-Uniform Memory Access)
1635 or have huge holes in the physical address space for other reasons.
1636 See <file:Documentation/vm/numa> for more.
1638 config ARCH_POPULATES_NODE_MAP
1639 def_bool y
1641 config ARCH_SPARSEMEM_ENABLE
1642 bool
1643 select SPARSEMEM_STATIC
1645 config NUMA
1646 bool "NUMA Support"
1647 depends on SYS_SUPPORTS_NUMA
1648 help
1649 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1650 Access). This option improves performance on systems with more
1651 than two nodes; on two node systems it is generally better to
1652 leave it disabled; on single node systems disable this option
1653 disabled.
1655 config SYS_SUPPORTS_NUMA
1656 bool
1658 config NODES_SHIFT
1659 int
1660 default "6"
1661 depends on NEED_MULTIPLE_NODES
1663 source "mm/Kconfig"
1665 config SMP
1666 bool "Multi-Processing support"
1667 depends on SYS_SUPPORTS_SMP
1668 select IRQ_PER_CPU
1669 select USE_GENERIC_SMP_HELPERS
1670 help
1671 This enables support for systems with more than one CPU. If you have
1672 a system with only one CPU, like most personal computers, say N. If
1673 you have a system with more than one CPU, say Y.
1675 If you say N here, the kernel will run on single and multiprocessor
1676 machines, but will use only one CPU of a multiprocessor machine. If
1677 you say Y here, the kernel will run on many, but not all,
1678 singleprocessor machines. On a singleprocessor machine, the kernel
1679 will run faster if you say N here.
1681 People using multiprocessor machines who say Y here should also say
1682 Y to "Enhanced Real Time Clock Support", below.
1684 See also the SMP-HOWTO available at
1685 <http://www.tldp.org/docs.html#howto>.
1687 If you don't know what to do here, say N.
1689 config SMP_UP
1690 bool
1692 config SYS_SUPPORTS_MIPS_CMP
1693 bool
1695 config SYS_SUPPORTS_SMP
1696 bool
1698 config NR_CPUS_DEFAULT_1
1699 bool
1701 config NR_CPUS_DEFAULT_2
1702 bool
1704 config NR_CPUS_DEFAULT_4
1705 bool
1707 config NR_CPUS_DEFAULT_8
1708 bool
1710 config NR_CPUS_DEFAULT_16
1711 bool
1713 config NR_CPUS_DEFAULT_32
1714 bool
1716 config NR_CPUS_DEFAULT_64
1717 bool
1719 config NR_CPUS
1720 int "Maximum number of CPUs (2-64)"
1721 range 1 64 if NR_CPUS_DEFAULT_1
1722 depends on SMP
1723 default "1" if NR_CPUS_DEFAULT_1
1724 default "2" if NR_CPUS_DEFAULT_2
1725 default "4" if NR_CPUS_DEFAULT_4
1726 default "8" if NR_CPUS_DEFAULT_8
1727 default "16" if NR_CPUS_DEFAULT_16
1728 default "32" if NR_CPUS_DEFAULT_32
1729 default "64" if NR_CPUS_DEFAULT_64
1730 help
1731 This allows you to specify the maximum number of CPUs which this
1732 kernel will support. The maximum supported value is 32 for 32-bit
1733 kernel and 64 for 64-bit kernels; the minimum value which makes
1734 sense is 1 for Qemu (useful only for kernel debugging purposes)
1735 and 2 for all others.
1737 This is purely to save memory - each supported CPU adds
1738 approximately eight kilobytes to the kernel image. For best
1739 performance should round up your number of processors to the next
1740 power of two.
1742 source "kernel/time/Kconfig"
1744 #
1745 # Timer Interrupt Frequency Configuration
1746 #
1748 choice
1749 prompt "Timer frequency"
1750 default HZ_250
1751 help
1752 Allows the configuration of the timer frequency.
1754 config HZ_48
1755 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
1757 config HZ_100
1758 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1760 config HZ_128
1761 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1763 config HZ_250
1764 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1766 config HZ_256
1767 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1769 config HZ_1000
1770 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1772 config HZ_1024
1773 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1775 endchoice
1777 config SYS_SUPPORTS_48HZ
1778 bool
1780 config SYS_SUPPORTS_100HZ
1781 bool
1783 config SYS_SUPPORTS_128HZ
1784 bool
1786 config SYS_SUPPORTS_250HZ
1787 bool
1789 config SYS_SUPPORTS_256HZ
1790 bool
1792 config SYS_SUPPORTS_1000HZ
1793 bool
1795 config SYS_SUPPORTS_1024HZ
1796 bool
1798 config SYS_SUPPORTS_ARBIT_HZ
1799 bool
1800 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1801 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1802 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1803 !SYS_SUPPORTS_1024HZ
1805 config HZ
1806 int
1807 default 48 if HZ_48
1808 default 100 if HZ_100
1809 default 128 if HZ_128
1810 default 250 if HZ_250
1811 default 256 if HZ_256
1812 default 1000 if HZ_1000
1813 default 1024 if HZ_1024
1815 source "kernel/Kconfig.preempt"
1817 config MIPS_INSANE_LARGE
1818 bool "Support for large 64-bit configurations"
1819 depends on CPU_R10000 && 64BIT
1820 help
1821 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1822 previous 64-bit processors which only supported 40 bit / 1TB. If you
1823 need processes of more than 1TB virtual address space, say Y here.
1824 This will result in additional memory usage, so it is not
1825 recommended for normal users.
1827 config KEXEC
1828 bool "Kexec system call (EXPERIMENTAL)"
1829 depends on EXPERIMENTAL
1830 help
1831 kexec is a system call that implements the ability to shutdown your
1832 current kernel, and to start another kernel. It is like a reboot
1833 but it is independent of the system firmware. And like a reboot
1834 you can start any kernel with it, not just Linux.
1836 The name comes from the similarity to the exec system call.
1838 It is an ongoing process to be certain the hardware in a machine
1839 is properly shutdown, so do not be surprised if this code does not
1840 initially work for you. It may help to enable device hotplugging
1841 support. As of this writing the exact hardware interface is
1842 strongly in flux, so no good recommendation can be made.
1844 config SECCOMP
1845 bool "Enable seccomp to safely compute untrusted bytecode"
1846 depends on PROC_FS
1847 default y
1848 help
1849 This kernel feature is useful for number crunching applications
1850 that may need to compute untrusted bytecode during their
1851 execution. By using pipes or other transports made available to
1852 the process as file descriptors supporting the read/write
1853 syscalls, it's possible to isolate those applications in
1854 their own address space using seccomp. Once seccomp is
1855 enabled via /proc/<pid>/seccomp, it cannot be disabled
1856 and the task is only allowed to execute a few safe syscalls
1857 defined by each seccomp mode.
1859 If unsure, say Y. Only embedded should say N here.
1861 endmenu
1863 config RWSEM_GENERIC_SPINLOCK
1864 bool
1865 default y
1867 config LOCKDEP_SUPPORT
1868 bool
1869 default y
1871 config STACKTRACE_SUPPORT
1872 bool
1873 default y
1875 source "init/Kconfig"
1877 config PROBE_INITRD_HEADER
1878 bool "Probe initrd header created by addinitrd"
1879 depends on BLK_DEV_INITRD
1880 help
1881 Probe initrd header at the last page of kernel image.
1882 Say Y here if you are using arch/mips/boot/addinitrd.c to
1883 add initrd or initramfs image to the kernel image.
1884 Otherwise, say N.
1886 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1888 config HW_HAS_EISA
1889 bool
1890 config HW_HAS_PCI
1891 bool
1893 config PCI
1894 bool "Support for PCI controller"
1895 depends on HW_HAS_PCI
1896 select PCI_DOMAINS
1897 help
1898 Find out whether you have a PCI motherboard. PCI is the name of a
1899 bus system, i.e. the way the CPU talks to the other stuff inside
1900 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1901 say Y, otherwise N.
1903 config PCI_DOMAINS
1904 bool
1906 source "drivers/pci/Kconfig"
1908 #
1909 # ISA support is now enabled via select. Too many systems still have the one
1910 # or other ISA chip on the board that users don't know about so don't expect
1911 # users to choose the right thing ...
1912 #
1913 config ISA
1914 bool
1916 config EISA
1917 bool "EISA support"
1918 depends on HW_HAS_EISA
1919 select ISA
1920 select GENERIC_ISA_DMA
1921 ---help---
1922 The Extended Industry Standard Architecture (EISA) bus was
1923 developed as an open alternative to the IBM MicroChannel bus.
1925 The EISA bus provided some of the features of the IBM MicroChannel
1926 bus while maintaining backward compatibility with cards made for
1927 the older ISA bus. The EISA bus saw limited use between 1988 and
1928 1995 when it was made obsolete by the PCI bus.
1930 Say Y here if you are building a kernel for an EISA-based machine.
1932 Otherwise, say N.
1934 source "drivers/eisa/Kconfig"
1936 config TC
1937 bool "TURBOchannel support"
1938 depends on MACH_DECSTATION
1939 help
1940 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1941 processors. Documentation on writing device drivers for TurboChannel
1942 is available at:
1943 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1945 #config ACCESSBUS
1946 # bool "Access.Bus support"
1947 # depends on TC
1949 config MMU
1950 bool
1951 default y
1953 config I8253
1954 bool
1956 config ZONE_DMA32
1957 bool
1959 source "drivers/pcmcia/Kconfig"
1961 source "drivers/pci/hotplug/Kconfig"
1963 endmenu
1965 menu "Executable file formats"
1967 source "fs/Kconfig.binfmt"
1969 config TRAD_SIGNALS
1970 bool
1972 config MIPS32_COMPAT
1973 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
1974 depends on 64BIT
1975 help
1976 Select this option if you want Linux/MIPS 32-bit binary
1977 compatibility. Since all software available for Linux/MIPS is
1978 currently 32-bit you should say Y here.
1980 config COMPAT
1981 bool
1982 depends on MIPS32_COMPAT
1983 default y
1985 config SYSVIPC_COMPAT
1986 bool
1987 depends on COMPAT && SYSVIPC
1988 default y
1990 config MIPS32_O32
1991 bool "Kernel support for o32 binaries"
1992 depends on MIPS32_COMPAT
1993 help
1994 Select this option if you want to run o32 binaries. These are pure
1995 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
1996 existing binaries are in this format.
1998 If unsure, say Y.
2000 config MIPS32_N32
2001 bool "Kernel support for n32 binaries"
2002 depends on MIPS32_COMPAT
2003 help
2004 Select this option if you want to run n32 binaries. These are
2005 64-bit binaries using 32-bit quantities for addressing and certain
2006 data that would normally be 64-bit. They are used in special
2007 cases.
2009 If unsure, say N.
2011 config BINFMT_ELF32
2012 bool
2013 default y if MIPS32_O32 || MIPS32_N32
2015 endmenu
2017 menu "Power management options"
2019 config ARCH_SUSPEND_POSSIBLE
2020 def_bool y
2021 depends on !SMP
2023 source "kernel/power/Kconfig"
2025 endmenu
2027 source "net/Kconfig"
2029 source "drivers/Kconfig"
2031 source "fs/Kconfig"
2033 source "arch/mips/Kconfig.debug"
2035 source "security/Kconfig"
2037 source "crypto/Kconfig"
2039 source "lib/Kconfig"