gpio: loongson: Add Loongson-3A/3B GPIO driver support
[deliverable/linux.git] / arch / mips / Kconfig
1 config MIPS
2 bool
3 default y
4 select ARCH_MIGHT_HAVE_PC_PARPORT
5 select ARCH_MIGHT_HAVE_PC_SERIO
6 select HAVE_CONTEXT_TRACKING
7 select HAVE_GENERIC_DMA_COHERENT
8 select HAVE_IDE
9 select HAVE_OPROFILE
10 select HAVE_PERF_EVENTS
11 select PERF_USE_VMALLOC
12 select HAVE_ARCH_KGDB
13 select HAVE_ARCH_SECCOMP_FILTER
14 select HAVE_ARCH_TRACEHOOK
15 select HAVE_BPF_JIT if !CPU_MICROMIPS
16 select ARCH_HAVE_CUSTOM_GPIO_H
17 select HAVE_FUNCTION_TRACER
18 select HAVE_DYNAMIC_FTRACE
19 select HAVE_FTRACE_MCOUNT_RECORD
20 select HAVE_C_RECORDMCOUNT
21 select HAVE_FUNCTION_GRAPH_TRACER
22 select HAVE_KPROBES
23 select HAVE_KRETPROBES
24 select HAVE_DEBUG_KMEMLEAK
25 select HAVE_SYSCALL_TRACEPOINTS
26 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
27 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
28 select RTC_LIB if !MACH_LOONGSON
29 select GENERIC_ATOMIC64 if !64BIT
30 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
31 select HAVE_DMA_ATTRS
32 select HAVE_DMA_CONTIGUOUS
33 select HAVE_DMA_API_DEBUG
34 select GENERIC_IRQ_PROBE
35 select GENERIC_IRQ_SHOW
36 select GENERIC_PCI_IOMAP
37 select HAVE_ARCH_JUMP_LABEL
38 select ARCH_WANT_IPC_PARSE_VERSION
39 select IRQ_FORCED_THREADING
40 select HAVE_MEMBLOCK
41 select HAVE_MEMBLOCK_NODE_MAP
42 select ARCH_DISCARD_MEMBLOCK
43 select GENERIC_SMP_IDLE_THREAD
44 select BUILDTIME_EXTABLE_SORT
45 select GENERIC_CLOCKEVENTS
46 select GENERIC_CMOS_UPDATE
47 select HAVE_MOD_ARCH_SPECIFIC
48 select VIRT_TO_BUS
49 select MODULES_USE_ELF_REL if MODULES
50 select MODULES_USE_ELF_RELA if MODULES && 64BIT
51 select CLONE_BACKWARDS
52 select HAVE_DEBUG_STACKOVERFLOW
53 select HAVE_CC_STACKPROTECTOR
54 select CPU_PM if CPU_IDLE
55 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
56 select ARCH_BINFMT_ELF_STATE
57 select SYSCTL_EXCEPTION_TRACE
58
59 menu "Machine selection"
60
61 choice
62 prompt "System type"
63 default SGI_IP22
64
65 config MIPS_ALCHEMY
66 bool "Alchemy processor based machines"
67 select ARCH_PHYS_ADDR_T_64BIT
68 select CEVT_R4K
69 select CSRC_R4K
70 select IRQ_CPU
71 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
72 select SYS_HAS_CPU_MIPS32_R1
73 select SYS_SUPPORTS_32BIT_KERNEL
74 select SYS_SUPPORTS_APM_EMULATION
75 select ARCH_REQUIRE_GPIOLIB
76 select SYS_SUPPORTS_ZBOOT
77 select COMMON_CLK
78
79 config AR7
80 bool "Texas Instruments AR7"
81 select BOOT_ELF32
82 select DMA_NONCOHERENT
83 select CEVT_R4K
84 select CSRC_R4K
85 select IRQ_CPU
86 select NO_EXCEPT_FILL
87 select SWAP_IO_SPACE
88 select SYS_HAS_CPU_MIPS32_R1
89 select SYS_HAS_EARLY_PRINTK
90 select SYS_SUPPORTS_32BIT_KERNEL
91 select SYS_SUPPORTS_LITTLE_ENDIAN
92 select SYS_SUPPORTS_MIPS16
93 select SYS_SUPPORTS_ZBOOT_UART16550
94 select ARCH_REQUIRE_GPIOLIB
95 select VLYNQ
96 select HAVE_CLK
97 help
98 Support for the Texas Instruments AR7 System-on-a-Chip
99 family: TNETD7100, 7200 and 7300.
100
101 config ATH25
102 bool "Atheros AR231x/AR531x SoC support"
103 select CEVT_R4K
104 select CSRC_R4K
105 select DMA_NONCOHERENT
106 select IRQ_CPU
107 select IRQ_DOMAIN
108 select SYS_HAS_CPU_MIPS32_R1
109 select SYS_SUPPORTS_BIG_ENDIAN
110 select SYS_SUPPORTS_32BIT_KERNEL
111 select SYS_HAS_EARLY_PRINTK
112 help
113 Support for Atheros AR231x and Atheros AR531x based boards
114
115 config ATH79
116 bool "Atheros AR71XX/AR724X/AR913X based boards"
117 select ARCH_REQUIRE_GPIOLIB
118 select BOOT_RAW
119 select CEVT_R4K
120 select CSRC_R4K
121 select DMA_NONCOHERENT
122 select HAVE_CLK
123 select CLKDEV_LOOKUP
124 select IRQ_CPU
125 select MIPS_MACHINE
126 select SYS_HAS_CPU_MIPS32_R2
127 select SYS_HAS_EARLY_PRINTK
128 select SYS_SUPPORTS_32BIT_KERNEL
129 select SYS_SUPPORTS_BIG_ENDIAN
130 select SYS_SUPPORTS_MIPS16
131 help
132 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
133
134 config BCM3384
135 bool "Broadcom BCM3384 based boards"
136 select BOOT_RAW
137 select NO_EXCEPT_FILL
138 select USE_OF
139 select CEVT_R4K
140 select CSRC_R4K
141 select SYNC_R4K
142 select COMMON_CLK
143 select DMA_NONCOHERENT
144 select IRQ_CPU
145 select SYS_SUPPORTS_32BIT_KERNEL
146 select SYS_SUPPORTS_BIG_ENDIAN
147 select SYS_SUPPORTS_HIGHMEM
148 select SYS_HAS_CPU_BMIPS5000
149 select SWAP_IO_SPACE
150 select USB_EHCI_BIG_ENDIAN_DESC
151 select USB_EHCI_BIG_ENDIAN_MMIO
152 select USB_OHCI_BIG_ENDIAN_DESC
153 select USB_OHCI_BIG_ENDIAN_MMIO
154 help
155 Support for BCM3384 based boards. BCM3384/BCM33843 is a cable modem
156 chipset with a Linux application processor that is often used to
157 provide Samba services, a CUPS print server, and/or advanced routing
158 features.
159
160 config BCM47XX
161 bool "Broadcom BCM47XX based boards"
162 select ARCH_WANT_OPTIONAL_GPIOLIB
163 select BOOT_RAW
164 select CEVT_R4K
165 select CSRC_R4K
166 select DMA_NONCOHERENT
167 select HW_HAS_PCI
168 select IRQ_CPU
169 select SYS_HAS_CPU_MIPS32_R1
170 select NO_EXCEPT_FILL
171 select SYS_SUPPORTS_32BIT_KERNEL
172 select SYS_SUPPORTS_LITTLE_ENDIAN
173 select SYS_SUPPORTS_MIPS16
174 select SYS_HAS_EARLY_PRINTK
175 select USE_GENERIC_EARLY_PRINTK_8250
176 select GPIOLIB
177 select LEDS_GPIO_REGISTER
178 help
179 Support for BCM47XX based boards
180
181 config BCM63XX
182 bool "Broadcom BCM63XX based boards"
183 select BOOT_RAW
184 select CEVT_R4K
185 select CSRC_R4K
186 select SYNC_R4K
187 select DMA_NONCOHERENT
188 select IRQ_CPU
189 select SYS_SUPPORTS_32BIT_KERNEL
190 select SYS_SUPPORTS_BIG_ENDIAN
191 select SYS_HAS_EARLY_PRINTK
192 select SWAP_IO_SPACE
193 select ARCH_REQUIRE_GPIOLIB
194 select HAVE_CLK
195 select MIPS_L1_CACHE_SHIFT_4
196 help
197 Support for BCM63XX based boards
198
199 config MIPS_COBALT
200 bool "Cobalt Server"
201 select CEVT_R4K
202 select CSRC_R4K
203 select CEVT_GT641XX
204 select DMA_NONCOHERENT
205 select HW_HAS_PCI
206 select I8253
207 select I8259
208 select IRQ_CPU
209 select IRQ_GT641XX
210 select PCI_GT64XXX_PCI0
211 select PCI
212 select SYS_HAS_CPU_NEVADA
213 select SYS_HAS_EARLY_PRINTK
214 select SYS_SUPPORTS_32BIT_KERNEL
215 select SYS_SUPPORTS_64BIT_KERNEL
216 select SYS_SUPPORTS_LITTLE_ENDIAN
217 select USE_GENERIC_EARLY_PRINTK_8250
218
219 config MACH_DECSTATION
220 bool "DECstations"
221 select BOOT_ELF32
222 select CEVT_DS1287
223 select CEVT_R4K if CPU_R4X00
224 select CSRC_IOASIC
225 select CSRC_R4K if CPU_R4X00
226 select CPU_DADDI_WORKAROUNDS if 64BIT
227 select CPU_R4000_WORKAROUNDS if 64BIT
228 select CPU_R4400_WORKAROUNDS if 64BIT
229 select DMA_NONCOHERENT
230 select NO_IOPORT_MAP
231 select IRQ_CPU
232 select SYS_HAS_CPU_R3000
233 select SYS_HAS_CPU_R4X00
234 select SYS_SUPPORTS_32BIT_KERNEL
235 select SYS_SUPPORTS_64BIT_KERNEL
236 select SYS_SUPPORTS_LITTLE_ENDIAN
237 select SYS_SUPPORTS_128HZ
238 select SYS_SUPPORTS_256HZ
239 select SYS_SUPPORTS_1024HZ
240 select MIPS_L1_CACHE_SHIFT_4
241 help
242 This enables support for DEC's MIPS based workstations. For details
243 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
244 DECstation porting pages on <http://decstation.unix-ag.org/>.
245
246 If you have one of the following DECstation Models you definitely
247 want to choose R4xx0 for the CPU Type:
248
249 DECstation 5000/50
250 DECstation 5000/150
251 DECstation 5000/260
252 DECsystem 5900/260
253
254 otherwise choose R3000.
255
256 config MACH_JAZZ
257 bool "Jazz family of machines"
258 select FW_ARC
259 select FW_ARC32
260 select ARCH_MAY_HAVE_PC_FDC
261 select CEVT_R4K
262 select CSRC_R4K
263 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
264 select GENERIC_ISA_DMA
265 select HAVE_PCSPKR_PLATFORM
266 select IRQ_CPU
267 select I8253
268 select I8259
269 select ISA
270 select SYS_HAS_CPU_R4X00
271 select SYS_SUPPORTS_32BIT_KERNEL
272 select SYS_SUPPORTS_64BIT_KERNEL
273 select SYS_SUPPORTS_100HZ
274 help
275 This a family of machines based on the MIPS R4030 chipset which was
276 used by several vendors to build RISC/os and Windows NT workstations.
277 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
278 Olivetti M700-10 workstations.
279
280 config MACH_JZ4740
281 bool "Ingenic JZ4740 based machines"
282 select SYS_HAS_CPU_MIPS32_R1
283 select SYS_SUPPORTS_32BIT_KERNEL
284 select SYS_SUPPORTS_LITTLE_ENDIAN
285 select SYS_SUPPORTS_ZBOOT_UART16550
286 select DMA_NONCOHERENT
287 select IRQ_CPU
288 select ARCH_REQUIRE_GPIOLIB
289 select SYS_HAS_EARLY_PRINTK
290 select HAVE_CLK
291 select GENERIC_IRQ_CHIP
292
293 config LANTIQ
294 bool "Lantiq based platforms"
295 select DMA_NONCOHERENT
296 select IRQ_CPU
297 select CEVT_R4K
298 select CSRC_R4K
299 select SYS_HAS_CPU_MIPS32_R1
300 select SYS_HAS_CPU_MIPS32_R2
301 select SYS_SUPPORTS_BIG_ENDIAN
302 select SYS_SUPPORTS_32BIT_KERNEL
303 select SYS_SUPPORTS_MIPS16
304 select SYS_SUPPORTS_MULTITHREADING
305 select SYS_HAS_EARLY_PRINTK
306 select ARCH_REQUIRE_GPIOLIB
307 select SWAP_IO_SPACE
308 select BOOT_RAW
309 select HAVE_MACH_CLKDEV
310 select CLKDEV_LOOKUP
311 select USE_OF
312 select PINCTRL
313 select PINCTRL_LANTIQ
314 select ARCH_HAS_RESET_CONTROLLER
315 select RESET_CONTROLLER
316
317 config LASAT
318 bool "LASAT Networks platforms"
319 select CEVT_R4K
320 select CRC32
321 select CSRC_R4K
322 select DMA_NONCOHERENT
323 select SYS_HAS_EARLY_PRINTK
324 select HW_HAS_PCI
325 select IRQ_CPU
326 select PCI_GT64XXX_PCI0
327 select MIPS_NILE4
328 select R5000_CPU_SCACHE
329 select SYS_HAS_CPU_R5000
330 select SYS_SUPPORTS_32BIT_KERNEL
331 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
332 select SYS_SUPPORTS_LITTLE_ENDIAN
333
334 config MACH_LOONGSON
335 bool "Loongson family of machines"
336 select SYS_SUPPORTS_ZBOOT
337 help
338 This enables the support of Loongson family of machines.
339
340 Loongson is a family of general-purpose MIPS-compatible CPUs.
341 developed at Institute of Computing Technology (ICT),
342 Chinese Academy of Sciences (CAS) in the People's Republic
343 of China. The chief architect is Professor Weiwu Hu.
344
345 config MACH_LOONGSON1
346 bool "Loongson 1 family of machines"
347 select SYS_SUPPORTS_ZBOOT
348 help
349 This enables support for the Loongson 1 based machines.
350
351 Loongson 1 is a family of 32-bit MIPS-compatible SoCs developed by
352 the ICT (Institute of Computing Technology) and the Chinese Academy
353 of Sciences.
354
355 config MIPS_MALTA
356 bool "MIPS Malta board"
357 select ARCH_MAY_HAVE_PC_FDC
358 select BOOT_ELF32
359 select BOOT_RAW
360 select CEVT_R4K
361 select CSRC_R4K
362 select CLKSRC_MIPS_GIC
363 select DMA_MAYBE_COHERENT
364 select GENERIC_ISA_DMA
365 select HAVE_PCSPKR_PLATFORM
366 select IRQ_CPU
367 select MIPS_GIC
368 select HW_HAS_PCI
369 select I8253
370 select I8259
371 select MIPS_BONITO64
372 select MIPS_CPU_SCACHE
373 select MIPS_L1_CACHE_SHIFT_6
374 select PCI_GT64XXX_PCI0
375 select MIPS_MSC
376 select SWAP_IO_SPACE
377 select SYS_HAS_CPU_MIPS32_R1
378 select SYS_HAS_CPU_MIPS32_R2
379 select SYS_HAS_CPU_MIPS32_R3_5
380 select SYS_HAS_CPU_MIPS32_R6
381 select SYS_HAS_CPU_MIPS64_R1
382 select SYS_HAS_CPU_MIPS64_R2
383 select SYS_HAS_CPU_MIPS64_R6
384 select SYS_HAS_CPU_NEVADA
385 select SYS_HAS_CPU_RM7000
386 select SYS_SUPPORTS_32BIT_KERNEL
387 select SYS_SUPPORTS_64BIT_KERNEL
388 select SYS_SUPPORTS_BIG_ENDIAN
389 select SYS_SUPPORTS_LITTLE_ENDIAN
390 select SYS_SUPPORTS_MICROMIPS
391 select SYS_SUPPORTS_MIPS_CMP
392 select SYS_SUPPORTS_MIPS_CPS
393 select SYS_SUPPORTS_MIPS16
394 select SYS_SUPPORTS_MULTITHREADING
395 select SYS_SUPPORTS_SMARTMIPS
396 select SYS_SUPPORTS_ZBOOT
397 help
398 This enables support for the MIPS Technologies Malta evaluation
399 board.
400
401 config MIPS_SEAD3
402 bool "MIPS SEAD3 board"
403 select BOOT_ELF32
404 select BOOT_RAW
405 select BUILTIN_DTB
406 select CEVT_R4K
407 select CSRC_R4K
408 select CLKSRC_MIPS_GIC
409 select CPU_MIPSR2_IRQ_VI
410 select CPU_MIPSR2_IRQ_EI
411 select DMA_NONCOHERENT
412 select IRQ_CPU
413 select MIPS_GIC
414 select LIBFDT
415 select MIPS_MSC
416 select SYS_HAS_CPU_MIPS32_R1
417 select SYS_HAS_CPU_MIPS32_R2
418 select SYS_HAS_CPU_MIPS64_R1
419 select SYS_HAS_EARLY_PRINTK
420 select SYS_SUPPORTS_32BIT_KERNEL
421 select SYS_SUPPORTS_64BIT_KERNEL
422 select SYS_SUPPORTS_BIG_ENDIAN
423 select SYS_SUPPORTS_LITTLE_ENDIAN
424 select SYS_SUPPORTS_SMARTMIPS
425 select SYS_SUPPORTS_MICROMIPS
426 select SYS_SUPPORTS_MIPS16
427 select USB_EHCI_BIG_ENDIAN_DESC
428 select USB_EHCI_BIG_ENDIAN_MMIO
429 select USE_OF
430 help
431 This enables support for the MIPS Technologies SEAD3 evaluation
432 board.
433
434 config NEC_MARKEINS
435 bool "NEC EMMA2RH Mark-eins board"
436 select SOC_EMMA2RH
437 select HW_HAS_PCI
438 help
439 This enables support for the NEC Electronics Mark-eins boards.
440
441 config MACH_VR41XX
442 bool "NEC VR4100 series based machines"
443 select CEVT_R4K
444 select CSRC_R4K
445 select SYS_HAS_CPU_VR41XX
446 select SYS_SUPPORTS_MIPS16
447 select ARCH_REQUIRE_GPIOLIB
448
449 config NXP_STB220
450 bool "NXP STB220 board"
451 select SOC_PNX833X
452 help
453 Support for NXP Semiconductors STB220 Development Board.
454
455 config NXP_STB225
456 bool "NXP 225 board"
457 select SOC_PNX833X
458 select SOC_PNX8335
459 help
460 Support for NXP Semiconductors STB225 Development Board.
461
462 config PMC_MSP
463 bool "PMC-Sierra MSP chipsets"
464 select CEVT_R4K
465 select CSRC_R4K
466 select DMA_NONCOHERENT
467 select SWAP_IO_SPACE
468 select NO_EXCEPT_FILL
469 select BOOT_RAW
470 select SYS_HAS_CPU_MIPS32_R1
471 select SYS_HAS_CPU_MIPS32_R2
472 select SYS_SUPPORTS_32BIT_KERNEL
473 select SYS_SUPPORTS_BIG_ENDIAN
474 select SYS_SUPPORTS_MIPS16
475 select IRQ_CPU
476 select SERIAL_8250
477 select SERIAL_8250_CONSOLE
478 select USB_EHCI_BIG_ENDIAN_MMIO
479 select USB_EHCI_BIG_ENDIAN_DESC
480 help
481 This adds support for the PMC-Sierra family of Multi-Service
482 Processor System-On-A-Chips. These parts include a number
483 of integrated peripherals, interfaces and DSPs in addition to
484 a variety of MIPS cores.
485
486 config RALINK
487 bool "Ralink based machines"
488 select CEVT_R4K
489 select CSRC_R4K
490 select BOOT_RAW
491 select DMA_NONCOHERENT
492 select IRQ_CPU
493 select USE_OF
494 select SYS_HAS_CPU_MIPS32_R1
495 select SYS_HAS_CPU_MIPS32_R2
496 select SYS_SUPPORTS_32BIT_KERNEL
497 select SYS_SUPPORTS_LITTLE_ENDIAN
498 select SYS_SUPPORTS_MIPS16
499 select SYS_HAS_EARLY_PRINTK
500 select HAVE_MACH_CLKDEV
501 select CLKDEV_LOOKUP
502 select ARCH_HAS_RESET_CONTROLLER
503 select RESET_CONTROLLER
504
505 config SGI_IP22
506 bool "SGI IP22 (Indy/Indigo2)"
507 select FW_ARC
508 select FW_ARC32
509 select BOOT_ELF32
510 select CEVT_R4K
511 select CSRC_R4K
512 select DEFAULT_SGI_PARTITION
513 select DMA_NONCOHERENT
514 select HW_HAS_EISA
515 select I8253
516 select I8259
517 select IP22_CPU_SCACHE
518 select IRQ_CPU
519 select GENERIC_ISA_DMA_SUPPORT_BROKEN
520 select SGI_HAS_I8042
521 select SGI_HAS_INDYDOG
522 select SGI_HAS_HAL2
523 select SGI_HAS_SEEQ
524 select SGI_HAS_WD93
525 select SGI_HAS_ZILOG
526 select SWAP_IO_SPACE
527 select SYS_HAS_CPU_R4X00
528 select SYS_HAS_CPU_R5000
529 #
530 # Disable EARLY_PRINTK for now since it leads to overwritten prom
531 # memory during early boot on some machines.
532 #
533 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
534 # for a more details discussion
535 #
536 # select SYS_HAS_EARLY_PRINTK
537 select SYS_SUPPORTS_32BIT_KERNEL
538 select SYS_SUPPORTS_64BIT_KERNEL
539 select SYS_SUPPORTS_BIG_ENDIAN
540 select MIPS_L1_CACHE_SHIFT_7
541 help
542 This are the SGI Indy, Challenge S and Indigo2, as well as certain
543 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
544 that runs on these, say Y here.
545
546 config SGI_IP27
547 bool "SGI IP27 (Origin200/2000)"
548 select FW_ARC
549 select FW_ARC64
550 select BOOT_ELF64
551 select DEFAULT_SGI_PARTITION
552 select DMA_COHERENT
553 select SYS_HAS_EARLY_PRINTK
554 select HW_HAS_PCI
555 select NR_CPUS_DEFAULT_64
556 select SYS_HAS_CPU_R10000
557 select SYS_SUPPORTS_64BIT_KERNEL
558 select SYS_SUPPORTS_BIG_ENDIAN
559 select SYS_SUPPORTS_NUMA
560 select SYS_SUPPORTS_SMP
561 select MIPS_L1_CACHE_SHIFT_7
562 help
563 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
564 workstations. To compile a Linux kernel that runs on these, say Y
565 here.
566
567 config SGI_IP28
568 bool "SGI IP28 (Indigo2 R10k)"
569 select FW_ARC
570 select FW_ARC64
571 select BOOT_ELF64
572 select CEVT_R4K
573 select CSRC_R4K
574 select DEFAULT_SGI_PARTITION
575 select DMA_NONCOHERENT
576 select GENERIC_ISA_DMA_SUPPORT_BROKEN
577 select IRQ_CPU
578 select HW_HAS_EISA
579 select I8253
580 select I8259
581 select SGI_HAS_I8042
582 select SGI_HAS_INDYDOG
583 select SGI_HAS_HAL2
584 select SGI_HAS_SEEQ
585 select SGI_HAS_WD93
586 select SGI_HAS_ZILOG
587 select SWAP_IO_SPACE
588 select SYS_HAS_CPU_R10000
589 #
590 # Disable EARLY_PRINTK for now since it leads to overwritten prom
591 # memory during early boot on some machines.
592 #
593 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
594 # for a more details discussion
595 #
596 # select SYS_HAS_EARLY_PRINTK
597 select SYS_SUPPORTS_64BIT_KERNEL
598 select SYS_SUPPORTS_BIG_ENDIAN
599 select MIPS_L1_CACHE_SHIFT_7
600 help
601 This is the SGI Indigo2 with R10000 processor. To compile a Linux
602 kernel that runs on these, say Y here.
603
604 config SGI_IP32
605 bool "SGI IP32 (O2)"
606 select FW_ARC
607 select FW_ARC32
608 select BOOT_ELF32
609 select CEVT_R4K
610 select CSRC_R4K
611 select DMA_NONCOHERENT
612 select HW_HAS_PCI
613 select IRQ_CPU
614 select R5000_CPU_SCACHE
615 select RM7000_CPU_SCACHE
616 select SYS_HAS_CPU_R5000
617 select SYS_HAS_CPU_R10000 if BROKEN
618 select SYS_HAS_CPU_RM7000
619 select SYS_HAS_CPU_NEVADA
620 select SYS_SUPPORTS_64BIT_KERNEL
621 select SYS_SUPPORTS_BIG_ENDIAN
622 help
623 If you want this kernel to run on SGI O2 workstation, say Y here.
624
625 config SIBYTE_CRHINE
626 bool "Sibyte BCM91120C-CRhine"
627 select BOOT_ELF32
628 select DMA_COHERENT
629 select SIBYTE_BCM1120
630 select SWAP_IO_SPACE
631 select SYS_HAS_CPU_SB1
632 select SYS_SUPPORTS_BIG_ENDIAN
633 select SYS_SUPPORTS_LITTLE_ENDIAN
634
635 config SIBYTE_CARMEL
636 bool "Sibyte BCM91120x-Carmel"
637 select BOOT_ELF32
638 select DMA_COHERENT
639 select SIBYTE_BCM1120
640 select SWAP_IO_SPACE
641 select SYS_HAS_CPU_SB1
642 select SYS_SUPPORTS_BIG_ENDIAN
643 select SYS_SUPPORTS_LITTLE_ENDIAN
644
645 config SIBYTE_CRHONE
646 bool "Sibyte BCM91125C-CRhone"
647 select BOOT_ELF32
648 select DMA_COHERENT
649 select SIBYTE_BCM1125
650 select SWAP_IO_SPACE
651 select SYS_HAS_CPU_SB1
652 select SYS_SUPPORTS_BIG_ENDIAN
653 select SYS_SUPPORTS_HIGHMEM
654 select SYS_SUPPORTS_LITTLE_ENDIAN
655
656 config SIBYTE_RHONE
657 bool "Sibyte BCM91125E-Rhone"
658 select BOOT_ELF32
659 select DMA_COHERENT
660 select SIBYTE_BCM1125H
661 select SWAP_IO_SPACE
662 select SYS_HAS_CPU_SB1
663 select SYS_SUPPORTS_BIG_ENDIAN
664 select SYS_SUPPORTS_LITTLE_ENDIAN
665
666 config SIBYTE_SWARM
667 bool "Sibyte BCM91250A-SWARM"
668 select BOOT_ELF32
669 select DMA_COHERENT
670 select HAVE_PATA_PLATFORM
671 select SIBYTE_SB1250
672 select SWAP_IO_SPACE
673 select SYS_HAS_CPU_SB1
674 select SYS_SUPPORTS_BIG_ENDIAN
675 select SYS_SUPPORTS_HIGHMEM
676 select SYS_SUPPORTS_LITTLE_ENDIAN
677 select ZONE_DMA32 if 64BIT
678
679 config SIBYTE_LITTLESUR
680 bool "Sibyte BCM91250C2-LittleSur"
681 select BOOT_ELF32
682 select DMA_COHERENT
683 select HAVE_PATA_PLATFORM
684 select SIBYTE_SB1250
685 select SWAP_IO_SPACE
686 select SYS_HAS_CPU_SB1
687 select SYS_SUPPORTS_BIG_ENDIAN
688 select SYS_SUPPORTS_HIGHMEM
689 select SYS_SUPPORTS_LITTLE_ENDIAN
690
691 config SIBYTE_SENTOSA
692 bool "Sibyte BCM91250E-Sentosa"
693 select BOOT_ELF32
694 select DMA_COHERENT
695 select SIBYTE_SB1250
696 select SWAP_IO_SPACE
697 select SYS_HAS_CPU_SB1
698 select SYS_SUPPORTS_BIG_ENDIAN
699 select SYS_SUPPORTS_LITTLE_ENDIAN
700
701 config SIBYTE_BIGSUR
702 bool "Sibyte BCM91480B-BigSur"
703 select BOOT_ELF32
704 select DMA_COHERENT
705 select NR_CPUS_DEFAULT_4
706 select SIBYTE_BCM1x80
707 select SWAP_IO_SPACE
708 select SYS_HAS_CPU_SB1
709 select SYS_SUPPORTS_BIG_ENDIAN
710 select SYS_SUPPORTS_HIGHMEM
711 select SYS_SUPPORTS_LITTLE_ENDIAN
712 select ZONE_DMA32 if 64BIT
713
714 config SNI_RM
715 bool "SNI RM200/300/400"
716 select FW_ARC if CPU_LITTLE_ENDIAN
717 select FW_ARC32 if CPU_LITTLE_ENDIAN
718 select FW_SNIPROM if CPU_BIG_ENDIAN
719 select ARCH_MAY_HAVE_PC_FDC
720 select BOOT_ELF32
721 select CEVT_R4K
722 select CSRC_R4K
723 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
724 select DMA_NONCOHERENT
725 select GENERIC_ISA_DMA
726 select HAVE_PCSPKR_PLATFORM
727 select HW_HAS_EISA
728 select HW_HAS_PCI
729 select IRQ_CPU
730 select I8253
731 select I8259
732 select ISA
733 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
734 select SYS_HAS_CPU_R4X00
735 select SYS_HAS_CPU_R5000
736 select SYS_HAS_CPU_R10000
737 select R5000_CPU_SCACHE
738 select SYS_HAS_EARLY_PRINTK
739 select SYS_SUPPORTS_32BIT_KERNEL
740 select SYS_SUPPORTS_64BIT_KERNEL
741 select SYS_SUPPORTS_BIG_ENDIAN
742 select SYS_SUPPORTS_HIGHMEM
743 select SYS_SUPPORTS_LITTLE_ENDIAN
744 help
745 The SNI RM200/300/400 are MIPS-based machines manufactured by
746 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
747 Technology and now in turn merged with Fujitsu. Say Y here to
748 support this machine type.
749
750 config MACH_TX39XX
751 bool "Toshiba TX39 series based machines"
752
753 config MACH_TX49XX
754 bool "Toshiba TX49 series based machines"
755
756 config MIKROTIK_RB532
757 bool "Mikrotik RB532 boards"
758 select CEVT_R4K
759 select CSRC_R4K
760 select DMA_NONCOHERENT
761 select HW_HAS_PCI
762 select IRQ_CPU
763 select SYS_HAS_CPU_MIPS32_R1
764 select SYS_SUPPORTS_32BIT_KERNEL
765 select SYS_SUPPORTS_LITTLE_ENDIAN
766 select SWAP_IO_SPACE
767 select BOOT_RAW
768 select ARCH_REQUIRE_GPIOLIB
769 select MIPS_L1_CACHE_SHIFT_4
770 help
771 Support the Mikrotik(tm) RouterBoard 532 series,
772 based on the IDT RC32434 SoC.
773
774 config CAVIUM_OCTEON_SOC
775 bool "Cavium Networks Octeon SoC based boards"
776 select CEVT_R4K
777 select ARCH_PHYS_ADDR_T_64BIT
778 select DMA_COHERENT
779 select SYS_SUPPORTS_64BIT_KERNEL
780 select SYS_SUPPORTS_BIG_ENDIAN
781 select EDAC_SUPPORT
782 select SYS_SUPPORTS_HOTPLUG_CPU
783 select SYS_HAS_EARLY_PRINTK
784 select SYS_HAS_CPU_CAVIUM_OCTEON
785 select SWAP_IO_SPACE
786 select HW_HAS_PCI
787 select ZONE_DMA32
788 select HOLES_IN_ZONE
789 select ARCH_REQUIRE_GPIOLIB
790 select LIBFDT
791 select USE_OF
792 select ARCH_SPARSEMEM_ENABLE
793 select SYS_SUPPORTS_SMP
794 select NR_CPUS_DEFAULT_16
795 select BUILTIN_DTB
796 help
797 This option supports all of the Octeon reference boards from Cavium
798 Networks. It builds a kernel that dynamically determines the Octeon
799 CPU type and supports all known board reference implementations.
800 Some of the supported boards are:
801 EBT3000
802 EBH3000
803 EBH3100
804 Thunder
805 Kodama
806 Hikari
807 Say Y here for most Octeon reference boards.
808
809 config NLM_XLR_BOARD
810 bool "Netlogic XLR/XLS based systems"
811 select BOOT_ELF32
812 select NLM_COMMON
813 select SYS_HAS_CPU_XLR
814 select SYS_SUPPORTS_SMP
815 select HW_HAS_PCI
816 select SWAP_IO_SPACE
817 select SYS_SUPPORTS_32BIT_KERNEL
818 select SYS_SUPPORTS_64BIT_KERNEL
819 select ARCH_PHYS_ADDR_T_64BIT
820 select SYS_SUPPORTS_BIG_ENDIAN
821 select SYS_SUPPORTS_HIGHMEM
822 select DMA_COHERENT
823 select NR_CPUS_DEFAULT_32
824 select CEVT_R4K
825 select CSRC_R4K
826 select IRQ_CPU
827 select ZONE_DMA32 if 64BIT
828 select SYNC_R4K
829 select SYS_HAS_EARLY_PRINTK
830 select SYS_SUPPORTS_ZBOOT
831 select SYS_SUPPORTS_ZBOOT_UART16550
832 help
833 Support for systems based on Netlogic XLR and XLS processors.
834 Say Y here if you have a XLR or XLS based board.
835
836 config NLM_XLP_BOARD
837 bool "Netlogic XLP based systems"
838 select BOOT_ELF32
839 select NLM_COMMON
840 select SYS_HAS_CPU_XLP
841 select SYS_SUPPORTS_SMP
842 select HW_HAS_PCI
843 select SYS_SUPPORTS_32BIT_KERNEL
844 select SYS_SUPPORTS_64BIT_KERNEL
845 select ARCH_PHYS_ADDR_T_64BIT
846 select SYS_SUPPORTS_BIG_ENDIAN
847 select SYS_SUPPORTS_LITTLE_ENDIAN
848 select SYS_SUPPORTS_HIGHMEM
849 select DMA_COHERENT
850 select NR_CPUS_DEFAULT_32
851 select CEVT_R4K
852 select CSRC_R4K
853 select IRQ_CPU
854 select ZONE_DMA32 if 64BIT
855 select SYNC_R4K
856 select SYS_HAS_EARLY_PRINTK
857 select USE_OF
858 select SYS_SUPPORTS_ZBOOT
859 select SYS_SUPPORTS_ZBOOT_UART16550
860 help
861 This board is based on Netlogic XLP Processor.
862 Say Y here if you have a XLP based board.
863
864 config MIPS_PARAVIRT
865 bool "Para-Virtualized guest system"
866 select CEVT_R4K
867 select CSRC_R4K
868 select DMA_COHERENT
869 select SYS_SUPPORTS_64BIT_KERNEL
870 select SYS_SUPPORTS_32BIT_KERNEL
871 select SYS_SUPPORTS_BIG_ENDIAN
872 select SYS_SUPPORTS_SMP
873 select NR_CPUS_DEFAULT_4
874 select SYS_HAS_EARLY_PRINTK
875 select SYS_HAS_CPU_MIPS32_R2
876 select SYS_HAS_CPU_MIPS64_R2
877 select SYS_HAS_CPU_CAVIUM_OCTEON
878 select HW_HAS_PCI
879 select SWAP_IO_SPACE
880 help
881 This option supports guest running under ????
882
883 endchoice
884
885 source "arch/mips/alchemy/Kconfig"
886 source "arch/mips/ath25/Kconfig"
887 source "arch/mips/ath79/Kconfig"
888 source "arch/mips/bcm47xx/Kconfig"
889 source "arch/mips/bcm63xx/Kconfig"
890 source "arch/mips/jazz/Kconfig"
891 source "arch/mips/jz4740/Kconfig"
892 source "arch/mips/lantiq/Kconfig"
893 source "arch/mips/lasat/Kconfig"
894 source "arch/mips/pmcs-msp71xx/Kconfig"
895 source "arch/mips/ralink/Kconfig"
896 source "arch/mips/sgi-ip27/Kconfig"
897 source "arch/mips/sibyte/Kconfig"
898 source "arch/mips/txx9/Kconfig"
899 source "arch/mips/vr41xx/Kconfig"
900 source "arch/mips/cavium-octeon/Kconfig"
901 source "arch/mips/loongson/Kconfig"
902 source "arch/mips/loongson1/Kconfig"
903 source "arch/mips/netlogic/Kconfig"
904 source "arch/mips/paravirt/Kconfig"
905
906 endmenu
907
908 config RWSEM_GENERIC_SPINLOCK
909 bool
910 default y
911
912 config RWSEM_XCHGADD_ALGORITHM
913 bool
914
915 config ARCH_HAS_ILOG2_U32
916 bool
917 default n
918
919 config ARCH_HAS_ILOG2_U64
920 bool
921 default n
922
923 config GENERIC_HWEIGHT
924 bool
925 default y
926
927 config GENERIC_CALIBRATE_DELAY
928 bool
929 default y
930
931 config SCHED_OMIT_FRAME_POINTER
932 bool
933 default y
934
935 #
936 # Select some configuration options automatically based on user selections.
937 #
938 config FW_ARC
939 bool
940
941 config ARCH_MAY_HAVE_PC_FDC
942 bool
943
944 config BOOT_RAW
945 bool
946
947 config CEVT_BCM1480
948 bool
949
950 config CEVT_DS1287
951 bool
952
953 config CEVT_GT641XX
954 bool
955
956 config CEVT_R4K
957 bool
958
959 config CEVT_SB1250
960 bool
961
962 config CEVT_TXX9
963 bool
964
965 config CSRC_BCM1480
966 bool
967
968 config CSRC_IOASIC
969 bool
970
971 config CSRC_R4K
972 bool
973
974 config CSRC_SB1250
975 bool
976
977 config GPIO_TXX9
978 select ARCH_REQUIRE_GPIOLIB
979 bool
980
981 config FW_CFE
982 bool
983
984 config ARCH_DMA_ADDR_T_64BIT
985 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
986
987 config DMA_MAYBE_COHERENT
988 select DMA_NONCOHERENT
989 bool
990
991 config DMA_COHERENT
992 bool
993
994 config DMA_NONCOHERENT
995 bool
996 select NEED_DMA_MAP_STATE
997
998 config NEED_DMA_MAP_STATE
999 bool
1000
1001 config SYS_HAS_EARLY_PRINTK
1002 bool
1003
1004 config HOTPLUG_CPU
1005 bool "Support for hot-pluggable CPUs"
1006 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
1007 help
1008 Say Y here to allow turning CPUs off and on. CPUs can be
1009 controlled through /sys/devices/system/cpu.
1010 (Note: power management support will enable this option
1011 automatically on SMP systems. )
1012 Say N if you want to disable CPU hotplug.
1013
1014 config SYS_SUPPORTS_HOTPLUG_CPU
1015 bool
1016
1017 config I8259
1018 bool
1019 select IRQ_DOMAIN
1020
1021 config MIPS_BONITO64
1022 bool
1023
1024 config MIPS_MSC
1025 bool
1026
1027 config MIPS_NILE4
1028 bool
1029
1030 config SYNC_R4K
1031 bool
1032
1033 config MIPS_MACHINE
1034 def_bool n
1035
1036 config NO_IOPORT_MAP
1037 def_bool n
1038
1039 config GENERIC_CSUM
1040 bool
1041
1042 config GENERIC_ISA_DMA
1043 bool
1044 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1045 select ISA_DMA_API
1046
1047 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1048 bool
1049 select GENERIC_ISA_DMA
1050
1051 config ISA_DMA_API
1052 bool
1053
1054 config HOLES_IN_ZONE
1055 bool
1056
1057 #
1058 # Endianness selection. Sufficiently obscure so many users don't know what to
1059 # answer,so we try hard to limit the available choices. Also the use of a
1060 # choice statement should be more obvious to the user.
1061 #
1062 choice
1063 prompt "Endianness selection"
1064 help
1065 Some MIPS machines can be configured for either little or big endian
1066 byte order. These modes require different kernels and a different
1067 Linux distribution. In general there is one preferred byteorder for a
1068 particular system but some systems are just as commonly used in the
1069 one or the other endianness.
1070
1071 config CPU_BIG_ENDIAN
1072 bool "Big endian"
1073 depends on SYS_SUPPORTS_BIG_ENDIAN
1074
1075 config CPU_LITTLE_ENDIAN
1076 bool "Little endian"
1077 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1078
1079 endchoice
1080
1081 config EXPORT_UASM
1082 bool
1083
1084 config SYS_SUPPORTS_APM_EMULATION
1085 bool
1086
1087 config SYS_SUPPORTS_BIG_ENDIAN
1088 bool
1089
1090 config SYS_SUPPORTS_LITTLE_ENDIAN
1091 bool
1092
1093 config SYS_SUPPORTS_HUGETLBFS
1094 bool
1095 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1096 default y
1097
1098 config MIPS_HUGE_TLB_SUPPORT
1099 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1100
1101 config IRQ_CPU
1102 bool
1103 select IRQ_DOMAIN
1104
1105 config IRQ_CPU_RM7K
1106 bool
1107
1108 config IRQ_MSP_SLP
1109 bool
1110
1111 config IRQ_MSP_CIC
1112 bool
1113
1114 config IRQ_TXX9
1115 bool
1116
1117 config IRQ_GT641XX
1118 bool
1119
1120 config PCI_GT64XXX_PCI0
1121 bool
1122
1123 config NO_EXCEPT_FILL
1124 bool
1125
1126 config SOC_EMMA2RH
1127 bool
1128 select CEVT_R4K
1129 select CSRC_R4K
1130 select DMA_NONCOHERENT
1131 select IRQ_CPU
1132 select SWAP_IO_SPACE
1133 select SYS_HAS_CPU_R5500
1134 select SYS_SUPPORTS_32BIT_KERNEL
1135 select SYS_SUPPORTS_64BIT_KERNEL
1136 select SYS_SUPPORTS_BIG_ENDIAN
1137
1138 config SOC_PNX833X
1139 bool
1140 select CEVT_R4K
1141 select CSRC_R4K
1142 select IRQ_CPU
1143 select DMA_NONCOHERENT
1144 select SYS_HAS_CPU_MIPS32_R2
1145 select SYS_SUPPORTS_32BIT_KERNEL
1146 select SYS_SUPPORTS_LITTLE_ENDIAN
1147 select SYS_SUPPORTS_BIG_ENDIAN
1148 select SYS_SUPPORTS_MIPS16
1149 select CPU_MIPSR2_IRQ_VI
1150
1151 config SOC_PNX8335
1152 bool
1153 select SOC_PNX833X
1154
1155 config MIPS_SPRAM
1156 bool
1157
1158 config SWAP_IO_SPACE
1159 bool
1160
1161 config SGI_HAS_INDYDOG
1162 bool
1163
1164 config SGI_HAS_HAL2
1165 bool
1166
1167 config SGI_HAS_SEEQ
1168 bool
1169
1170 config SGI_HAS_WD93
1171 bool
1172
1173 config SGI_HAS_ZILOG
1174 bool
1175
1176 config SGI_HAS_I8042
1177 bool
1178
1179 config DEFAULT_SGI_PARTITION
1180 bool
1181
1182 config FW_ARC32
1183 bool
1184
1185 config FW_SNIPROM
1186 bool
1187
1188 config BOOT_ELF32
1189 bool
1190
1191 config MIPS_L1_CACHE_SHIFT_4
1192 bool
1193
1194 config MIPS_L1_CACHE_SHIFT_5
1195 bool
1196
1197 config MIPS_L1_CACHE_SHIFT_6
1198 bool
1199
1200 config MIPS_L1_CACHE_SHIFT_7
1201 bool
1202
1203 config MIPS_L1_CACHE_SHIFT
1204 int
1205 default "4" if MIPS_L1_CACHE_SHIFT_4
1206 default "5" if MIPS_L1_CACHE_SHIFT_5
1207 default "6" if MIPS_L1_CACHE_SHIFT_6
1208 default "7" if MIPS_L1_CACHE_SHIFT_7
1209 default "5"
1210
1211 config HAVE_STD_PC_SERIAL_PORT
1212 bool
1213
1214 config ARC_CONSOLE
1215 bool "ARC console support"
1216 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1217
1218 config ARC_MEMORY
1219 bool
1220 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1221 default y
1222
1223 config ARC_PROMLIB
1224 bool
1225 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1226 default y
1227
1228 config FW_ARC64
1229 bool
1230
1231 config BOOT_ELF64
1232 bool
1233
1234 menu "CPU selection"
1235
1236 choice
1237 prompt "CPU type"
1238 default CPU_R4X00
1239
1240 config CPU_LOONGSON3
1241 bool "Loongson 3 CPU"
1242 depends on SYS_HAS_CPU_LOONGSON3
1243 select CPU_SUPPORTS_64BIT_KERNEL
1244 select CPU_SUPPORTS_HIGHMEM
1245 select CPU_SUPPORTS_HUGEPAGES
1246 select WEAK_ORDERING
1247 select WEAK_REORDERING_BEYOND_LLSC
1248 select ARCH_REQUIRE_GPIOLIB
1249 help
1250 The Loongson 3 processor implements the MIPS64R2 instruction
1251 set with many extensions.
1252
1253 config CPU_LOONGSON2E
1254 bool "Loongson 2E"
1255 depends on SYS_HAS_CPU_LOONGSON2E
1256 select CPU_LOONGSON2
1257 help
1258 The Loongson 2E processor implements the MIPS III instruction set
1259 with many extensions.
1260
1261 It has an internal FPGA northbridge, which is compatible to
1262 bonito64.
1263
1264 config CPU_LOONGSON2F
1265 bool "Loongson 2F"
1266 depends on SYS_HAS_CPU_LOONGSON2F
1267 select CPU_LOONGSON2
1268 select ARCH_REQUIRE_GPIOLIB
1269 help
1270 The Loongson 2F processor implements the MIPS III instruction set
1271 with many extensions.
1272
1273 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1274 have a similar programming interface with FPGA northbridge used in
1275 Loongson2E.
1276
1277 config CPU_LOONGSON1B
1278 bool "Loongson 1B"
1279 depends on SYS_HAS_CPU_LOONGSON1B
1280 select CPU_LOONGSON1
1281 help
1282 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1283 release 2 instruction set.
1284
1285 config CPU_MIPS32_R1
1286 bool "MIPS32 Release 1"
1287 depends on SYS_HAS_CPU_MIPS32_R1
1288 select CPU_HAS_PREFETCH
1289 select CPU_SUPPORTS_32BIT_KERNEL
1290 select CPU_SUPPORTS_HIGHMEM
1291 help
1292 Choose this option to build a kernel for release 1 or later of the
1293 MIPS32 architecture. Most modern embedded systems with a 32-bit
1294 MIPS processor are based on a MIPS32 processor. If you know the
1295 specific type of processor in your system, choose those that one
1296 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1297 Release 2 of the MIPS32 architecture is available since several
1298 years so chances are you even have a MIPS32 Release 2 processor
1299 in which case you should choose CPU_MIPS32_R2 instead for better
1300 performance.
1301
1302 config CPU_MIPS32_R2
1303 bool "MIPS32 Release 2"
1304 depends on SYS_HAS_CPU_MIPS32_R2
1305 select CPU_HAS_PREFETCH
1306 select CPU_SUPPORTS_32BIT_KERNEL
1307 select CPU_SUPPORTS_HIGHMEM
1308 select CPU_SUPPORTS_MSA
1309 select HAVE_KVM
1310 help
1311 Choose this option to build a kernel for release 2 or later of the
1312 MIPS32 architecture. Most modern embedded systems with a 32-bit
1313 MIPS processor are based on a MIPS32 processor. If you know the
1314 specific type of processor in your system, choose those that one
1315 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1316
1317 config CPU_MIPS32_R6
1318 bool "MIPS32 Release 6 (EXPERIMENTAL)"
1319 depends on SYS_HAS_CPU_MIPS32_R6
1320 select CPU_HAS_PREFETCH
1321 select CPU_SUPPORTS_32BIT_KERNEL
1322 select CPU_SUPPORTS_HIGHMEM
1323 select CPU_SUPPORTS_MSA
1324 select GENERIC_CSUM
1325 select HAVE_KVM
1326 select MIPS_O32_FP64_SUPPORT
1327 help
1328 Choose this option to build a kernel for release 6 or later of the
1329 MIPS32 architecture. New MIPS processors, starting with the Warrior
1330 family, are based on a MIPS32r6 processor. If you own an older
1331 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1332
1333 config CPU_MIPS64_R1
1334 bool "MIPS64 Release 1"
1335 depends on SYS_HAS_CPU_MIPS64_R1
1336 select CPU_HAS_PREFETCH
1337 select CPU_SUPPORTS_32BIT_KERNEL
1338 select CPU_SUPPORTS_64BIT_KERNEL
1339 select CPU_SUPPORTS_HIGHMEM
1340 select CPU_SUPPORTS_HUGEPAGES
1341 help
1342 Choose this option to build a kernel for release 1 or later of the
1343 MIPS64 architecture. Many modern embedded systems with a 64-bit
1344 MIPS processor are based on a MIPS64 processor. If you know the
1345 specific type of processor in your system, choose those that one
1346 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1347 Release 2 of the MIPS64 architecture is available since several
1348 years so chances are you even have a MIPS64 Release 2 processor
1349 in which case you should choose CPU_MIPS64_R2 instead for better
1350 performance.
1351
1352 config CPU_MIPS64_R2
1353 bool "MIPS64 Release 2"
1354 depends on SYS_HAS_CPU_MIPS64_R2
1355 select CPU_HAS_PREFETCH
1356 select CPU_SUPPORTS_32BIT_KERNEL
1357 select CPU_SUPPORTS_64BIT_KERNEL
1358 select CPU_SUPPORTS_HIGHMEM
1359 select CPU_SUPPORTS_HUGEPAGES
1360 select CPU_SUPPORTS_MSA
1361 help
1362 Choose this option to build a kernel for release 2 or later of the
1363 MIPS64 architecture. Many modern embedded systems with a 64-bit
1364 MIPS processor are based on a MIPS64 processor. If you know the
1365 specific type of processor in your system, choose those that one
1366 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1367
1368 config CPU_MIPS64_R6
1369 bool "MIPS64 Release 6 (EXPERIMENTAL)"
1370 depends on SYS_HAS_CPU_MIPS64_R6
1371 select CPU_HAS_PREFETCH
1372 select CPU_SUPPORTS_32BIT_KERNEL
1373 select CPU_SUPPORTS_64BIT_KERNEL
1374 select CPU_SUPPORTS_HIGHMEM
1375 select CPU_SUPPORTS_MSA
1376 select GENERIC_CSUM
1377 help
1378 Choose this option to build a kernel for release 6 or later of the
1379 MIPS64 architecture. New MIPS processors, starting with the Warrior
1380 family, are based on a MIPS64r6 processor. If you own an older
1381 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1382
1383 config CPU_R3000
1384 bool "R3000"
1385 depends on SYS_HAS_CPU_R3000
1386 select CPU_HAS_WB
1387 select CPU_SUPPORTS_32BIT_KERNEL
1388 select CPU_SUPPORTS_HIGHMEM
1389 help
1390 Please make sure to pick the right CPU type. Linux/MIPS is not
1391 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1392 *not* work on R4000 machines and vice versa. However, since most
1393 of the supported machines have an R4000 (or similar) CPU, R4x00
1394 might be a safe bet. If the resulting kernel does not work,
1395 try to recompile with R3000.
1396
1397 config CPU_TX39XX
1398 bool "R39XX"
1399 depends on SYS_HAS_CPU_TX39XX
1400 select CPU_SUPPORTS_32BIT_KERNEL
1401
1402 config CPU_VR41XX
1403 bool "R41xx"
1404 depends on SYS_HAS_CPU_VR41XX
1405 select CPU_SUPPORTS_32BIT_KERNEL
1406 select CPU_SUPPORTS_64BIT_KERNEL
1407 help
1408 The options selects support for the NEC VR4100 series of processors.
1409 Only choose this option if you have one of these processors as a
1410 kernel built with this option will not run on any other type of
1411 processor or vice versa.
1412
1413 config CPU_R4300
1414 bool "R4300"
1415 depends on SYS_HAS_CPU_R4300
1416 select CPU_SUPPORTS_32BIT_KERNEL
1417 select CPU_SUPPORTS_64BIT_KERNEL
1418 help
1419 MIPS Technologies R4300-series processors.
1420
1421 config CPU_R4X00
1422 bool "R4x00"
1423 depends on SYS_HAS_CPU_R4X00
1424 select CPU_SUPPORTS_32BIT_KERNEL
1425 select CPU_SUPPORTS_64BIT_KERNEL
1426 select CPU_SUPPORTS_HUGEPAGES
1427 help
1428 MIPS Technologies R4000-series processors other than 4300, including
1429 the R4000, R4400, R4600, and 4700.
1430
1431 config CPU_TX49XX
1432 bool "R49XX"
1433 depends on SYS_HAS_CPU_TX49XX
1434 select CPU_HAS_PREFETCH
1435 select CPU_SUPPORTS_32BIT_KERNEL
1436 select CPU_SUPPORTS_64BIT_KERNEL
1437 select CPU_SUPPORTS_HUGEPAGES
1438
1439 config CPU_R5000
1440 bool "R5000"
1441 depends on SYS_HAS_CPU_R5000
1442 select CPU_SUPPORTS_32BIT_KERNEL
1443 select CPU_SUPPORTS_64BIT_KERNEL
1444 select CPU_SUPPORTS_HUGEPAGES
1445 help
1446 MIPS Technologies R5000-series processors other than the Nevada.
1447
1448 config CPU_R5432
1449 bool "R5432"
1450 depends on SYS_HAS_CPU_R5432
1451 select CPU_SUPPORTS_32BIT_KERNEL
1452 select CPU_SUPPORTS_64BIT_KERNEL
1453 select CPU_SUPPORTS_HUGEPAGES
1454
1455 config CPU_R5500
1456 bool "R5500"
1457 depends on SYS_HAS_CPU_R5500
1458 select CPU_SUPPORTS_32BIT_KERNEL
1459 select CPU_SUPPORTS_64BIT_KERNEL
1460 select CPU_SUPPORTS_HUGEPAGES
1461 help
1462 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1463 instruction set.
1464
1465 config CPU_R6000
1466 bool "R6000"
1467 depends on SYS_HAS_CPU_R6000
1468 select CPU_SUPPORTS_32BIT_KERNEL
1469 help
1470 MIPS Technologies R6000 and R6000A series processors. Note these
1471 processors are extremely rare and the support for them is incomplete.
1472
1473 config CPU_NEVADA
1474 bool "RM52xx"
1475 depends on SYS_HAS_CPU_NEVADA
1476 select CPU_SUPPORTS_32BIT_KERNEL
1477 select CPU_SUPPORTS_64BIT_KERNEL
1478 select CPU_SUPPORTS_HUGEPAGES
1479 help
1480 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1481
1482 config CPU_R8000
1483 bool "R8000"
1484 depends on SYS_HAS_CPU_R8000
1485 select CPU_HAS_PREFETCH
1486 select CPU_SUPPORTS_64BIT_KERNEL
1487 help
1488 MIPS Technologies R8000 processors. Note these processors are
1489 uncommon and the support for them is incomplete.
1490
1491 config CPU_R10000
1492 bool "R10000"
1493 depends on SYS_HAS_CPU_R10000
1494 select CPU_HAS_PREFETCH
1495 select CPU_SUPPORTS_32BIT_KERNEL
1496 select CPU_SUPPORTS_64BIT_KERNEL
1497 select CPU_SUPPORTS_HIGHMEM
1498 select CPU_SUPPORTS_HUGEPAGES
1499 help
1500 MIPS Technologies R10000-series processors.
1501
1502 config CPU_RM7000
1503 bool "RM7000"
1504 depends on SYS_HAS_CPU_RM7000
1505 select CPU_HAS_PREFETCH
1506 select CPU_SUPPORTS_32BIT_KERNEL
1507 select CPU_SUPPORTS_64BIT_KERNEL
1508 select CPU_SUPPORTS_HIGHMEM
1509 select CPU_SUPPORTS_HUGEPAGES
1510
1511 config CPU_SB1
1512 bool "SB1"
1513 depends on SYS_HAS_CPU_SB1
1514 select CPU_SUPPORTS_32BIT_KERNEL
1515 select CPU_SUPPORTS_64BIT_KERNEL
1516 select CPU_SUPPORTS_HIGHMEM
1517 select CPU_SUPPORTS_HUGEPAGES
1518 select WEAK_ORDERING
1519
1520 config CPU_CAVIUM_OCTEON
1521 bool "Cavium Octeon processor"
1522 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1523 select CPU_HAS_PREFETCH
1524 select CPU_SUPPORTS_64BIT_KERNEL
1525 select WEAK_ORDERING
1526 select CPU_SUPPORTS_HIGHMEM
1527 select CPU_SUPPORTS_HUGEPAGES
1528 select USB_EHCI_BIG_ENDIAN_MMIO
1529 select MIPS_L1_CACHE_SHIFT_7
1530 help
1531 The Cavium Octeon processor is a highly integrated chip containing
1532 many ethernet hardware widgets for networking tasks. The processor
1533 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1534 Full details can be found at http://www.caviumnetworks.com.
1535
1536 config CPU_BMIPS
1537 bool "Broadcom BMIPS"
1538 depends on SYS_HAS_CPU_BMIPS
1539 select CPU_MIPS32
1540 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1541 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1542 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1543 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1544 select CPU_SUPPORTS_32BIT_KERNEL
1545 select DMA_NONCOHERENT
1546 select IRQ_CPU
1547 select SWAP_IO_SPACE
1548 select WEAK_ORDERING
1549 select CPU_SUPPORTS_HIGHMEM
1550 select CPU_HAS_PREFETCH
1551 help
1552 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1553
1554 config CPU_XLR
1555 bool "Netlogic XLR SoC"
1556 depends on SYS_HAS_CPU_XLR
1557 select CPU_SUPPORTS_32BIT_KERNEL
1558 select CPU_SUPPORTS_64BIT_KERNEL
1559 select CPU_SUPPORTS_HIGHMEM
1560 select CPU_SUPPORTS_HUGEPAGES
1561 select WEAK_ORDERING
1562 select WEAK_REORDERING_BEYOND_LLSC
1563 help
1564 Netlogic Microsystems XLR/XLS processors.
1565
1566 config CPU_XLP
1567 bool "Netlogic XLP SoC"
1568 depends on SYS_HAS_CPU_XLP
1569 select CPU_SUPPORTS_32BIT_KERNEL
1570 select CPU_SUPPORTS_64BIT_KERNEL
1571 select CPU_SUPPORTS_HIGHMEM
1572 select WEAK_ORDERING
1573 select WEAK_REORDERING_BEYOND_LLSC
1574 select CPU_HAS_PREFETCH
1575 select CPU_MIPSR2
1576 help
1577 Netlogic Microsystems XLP processors.
1578 endchoice
1579
1580 config CPU_MIPS32_3_5_FEATURES
1581 bool "MIPS32 Release 3.5 Features"
1582 depends on SYS_HAS_CPU_MIPS32_R3_5
1583 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1584 help
1585 Choose this option to build a kernel for release 2 or later of the
1586 MIPS32 architecture including features from the 3.5 release such as
1587 support for Enhanced Virtual Addressing (EVA).
1588
1589 config CPU_MIPS32_3_5_EVA
1590 bool "Enhanced Virtual Addressing (EVA)"
1591 depends on CPU_MIPS32_3_5_FEATURES
1592 select EVA
1593 default y
1594 help
1595 Choose this option if you want to enable the Enhanced Virtual
1596 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1597 One of its primary benefits is an increase in the maximum size
1598 of lowmem (up to 3GB). If unsure, say 'N' here.
1599
1600 if CPU_LOONGSON2F
1601 config CPU_NOP_WORKAROUNDS
1602 bool
1603
1604 config CPU_JUMP_WORKAROUNDS
1605 bool
1606
1607 config CPU_LOONGSON2F_WORKAROUNDS
1608 bool "Loongson 2F Workarounds"
1609 default y
1610 select CPU_NOP_WORKAROUNDS
1611 select CPU_JUMP_WORKAROUNDS
1612 help
1613 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1614 require workarounds. Without workarounds the system may hang
1615 unexpectedly. For more information please refer to the gas
1616 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1617
1618 Loongson 2F03 and later have fixed these issues and no workarounds
1619 are needed. The workarounds have no significant side effect on them
1620 but may decrease the performance of the system so this option should
1621 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1622 systems.
1623
1624 If unsure, please say Y.
1625 endif # CPU_LOONGSON2F
1626
1627 config SYS_SUPPORTS_ZBOOT
1628 bool
1629 select HAVE_KERNEL_GZIP
1630 select HAVE_KERNEL_BZIP2
1631 select HAVE_KERNEL_LZ4
1632 select HAVE_KERNEL_LZMA
1633 select HAVE_KERNEL_LZO
1634 select HAVE_KERNEL_XZ
1635
1636 config SYS_SUPPORTS_ZBOOT_UART16550
1637 bool
1638 select SYS_SUPPORTS_ZBOOT
1639
1640 config CPU_LOONGSON2
1641 bool
1642 select CPU_SUPPORTS_32BIT_KERNEL
1643 select CPU_SUPPORTS_64BIT_KERNEL
1644 select CPU_SUPPORTS_HIGHMEM
1645 select CPU_SUPPORTS_HUGEPAGES
1646
1647 config CPU_LOONGSON1
1648 bool
1649 select CPU_MIPS32
1650 select CPU_MIPSR2
1651 select CPU_HAS_PREFETCH
1652 select CPU_SUPPORTS_32BIT_KERNEL
1653 select CPU_SUPPORTS_HIGHMEM
1654 select CPU_SUPPORTS_CPUFREQ
1655
1656 config CPU_BMIPS32_3300
1657 select SMP_UP if SMP
1658 bool
1659
1660 config CPU_BMIPS4350
1661 bool
1662 select SYS_SUPPORTS_SMP
1663 select SYS_SUPPORTS_HOTPLUG_CPU
1664
1665 config CPU_BMIPS4380
1666 bool
1667 select MIPS_L1_CACHE_SHIFT_6
1668 select SYS_SUPPORTS_SMP
1669 select SYS_SUPPORTS_HOTPLUG_CPU
1670
1671 config CPU_BMIPS5000
1672 bool
1673 select MIPS_CPU_SCACHE
1674 select MIPS_L1_CACHE_SHIFT_7
1675 select SYS_SUPPORTS_SMP
1676 select SYS_SUPPORTS_HOTPLUG_CPU
1677
1678 config SYS_HAS_CPU_LOONGSON3
1679 bool
1680 select CPU_SUPPORTS_CPUFREQ
1681
1682 config SYS_HAS_CPU_LOONGSON2E
1683 bool
1684
1685 config SYS_HAS_CPU_LOONGSON2F
1686 bool
1687 select CPU_SUPPORTS_CPUFREQ
1688 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1689 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1690
1691 config SYS_HAS_CPU_LOONGSON1B
1692 bool
1693
1694 config SYS_HAS_CPU_MIPS32_R1
1695 bool
1696
1697 config SYS_HAS_CPU_MIPS32_R2
1698 bool
1699
1700 config SYS_HAS_CPU_MIPS32_R3_5
1701 bool
1702
1703 config SYS_HAS_CPU_MIPS32_R6
1704 bool
1705
1706 config SYS_HAS_CPU_MIPS64_R1
1707 bool
1708
1709 config SYS_HAS_CPU_MIPS64_R2
1710 bool
1711
1712 config SYS_HAS_CPU_MIPS64_R6
1713 bool
1714
1715 config SYS_HAS_CPU_R3000
1716 bool
1717
1718 config SYS_HAS_CPU_TX39XX
1719 bool
1720
1721 config SYS_HAS_CPU_VR41XX
1722 bool
1723
1724 config SYS_HAS_CPU_R4300
1725 bool
1726
1727 config SYS_HAS_CPU_R4X00
1728 bool
1729
1730 config SYS_HAS_CPU_TX49XX
1731 bool
1732
1733 config SYS_HAS_CPU_R5000
1734 bool
1735
1736 config SYS_HAS_CPU_R5432
1737 bool
1738
1739 config SYS_HAS_CPU_R5500
1740 bool
1741
1742 config SYS_HAS_CPU_R6000
1743 bool
1744
1745 config SYS_HAS_CPU_NEVADA
1746 bool
1747
1748 config SYS_HAS_CPU_R8000
1749 bool
1750
1751 config SYS_HAS_CPU_R10000
1752 bool
1753
1754 config SYS_HAS_CPU_RM7000
1755 bool
1756
1757 config SYS_HAS_CPU_SB1
1758 bool
1759
1760 config SYS_HAS_CPU_CAVIUM_OCTEON
1761 bool
1762
1763 config SYS_HAS_CPU_BMIPS
1764 bool
1765
1766 config SYS_HAS_CPU_BMIPS32_3300
1767 bool
1768 select SYS_HAS_CPU_BMIPS
1769
1770 config SYS_HAS_CPU_BMIPS4350
1771 bool
1772 select SYS_HAS_CPU_BMIPS
1773
1774 config SYS_HAS_CPU_BMIPS4380
1775 bool
1776 select SYS_HAS_CPU_BMIPS
1777
1778 config SYS_HAS_CPU_BMIPS5000
1779 bool
1780 select SYS_HAS_CPU_BMIPS
1781
1782 config SYS_HAS_CPU_XLR
1783 bool
1784
1785 config SYS_HAS_CPU_XLP
1786 bool
1787
1788 config MIPS_MALTA_PM
1789 depends on MIPS_MALTA
1790 depends on PCI
1791 bool
1792 default y
1793
1794 #
1795 # CPU may reorder R->R, R->W, W->R, W->W
1796 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1797 #
1798 config WEAK_ORDERING
1799 bool
1800
1801 #
1802 # CPU may reorder reads and writes beyond LL/SC
1803 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1804 #
1805 config WEAK_REORDERING_BEYOND_LLSC
1806 bool
1807 endmenu
1808
1809 #
1810 # These two indicate any level of the MIPS32 and MIPS64 architecture
1811 #
1812 config CPU_MIPS32
1813 bool
1814 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1815
1816 config CPU_MIPS64
1817 bool
1818 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1819
1820 #
1821 # These two indicate the revision of the architecture, either Release 1 or Release 2
1822 #
1823 config CPU_MIPSR1
1824 bool
1825 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1826
1827 config CPU_MIPSR2
1828 bool
1829 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1830 select MIPS_SPRAM
1831
1832 config CPU_MIPSR6
1833 bool
1834 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1835 select MIPS_SPRAM
1836
1837 config EVA
1838 bool
1839
1840 config SYS_SUPPORTS_32BIT_KERNEL
1841 bool
1842 config SYS_SUPPORTS_64BIT_KERNEL
1843 bool
1844 config CPU_SUPPORTS_32BIT_KERNEL
1845 bool
1846 config CPU_SUPPORTS_64BIT_KERNEL
1847 bool
1848 config CPU_SUPPORTS_CPUFREQ
1849 bool
1850 config CPU_SUPPORTS_ADDRWINCFG
1851 bool
1852 config CPU_SUPPORTS_HUGEPAGES
1853 bool
1854 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1855 bool
1856 config MIPS_PGD_C0_CONTEXT
1857 bool
1858 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1859
1860 #
1861 # Set to y for ptrace access to watch registers.
1862 #
1863 config HARDWARE_WATCHPOINTS
1864 bool
1865 default y if CPU_MIPSR1 || CPU_MIPSR2
1866
1867 menu "Kernel type"
1868
1869 choice
1870 prompt "Kernel code model"
1871 help
1872 You should only select this option if you have a workload that
1873 actually benefits from 64-bit processing or if your machine has
1874 large memory. You will only be presented a single option in this
1875 menu if your system does not support both 32-bit and 64-bit kernels.
1876
1877 config 32BIT
1878 bool "32-bit kernel"
1879 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1880 select TRAD_SIGNALS
1881 help
1882 Select this option if you want to build a 32-bit kernel.
1883 config 64BIT
1884 bool "64-bit kernel"
1885 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1886 help
1887 Select this option if you want to build a 64-bit kernel.
1888
1889 endchoice
1890
1891 config KVM_GUEST
1892 bool "KVM Guest Kernel"
1893 depends on BROKEN_ON_SMP
1894 help
1895 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1896
1897 config KVM_GUEST_TIMER_FREQ
1898 int "Count/Compare Timer Frequency (MHz)"
1899 depends on KVM_GUEST
1900 default 100
1901 help
1902 Set this to non-zero if building a guest kernel for KVM to skip RTC
1903 emulation when determining guest CPU Frequency. Instead, the guest's
1904 timer frequency is specified directly.
1905
1906 choice
1907 prompt "Kernel page size"
1908 default PAGE_SIZE_4KB
1909
1910 config PAGE_SIZE_4KB
1911 bool "4kB"
1912 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
1913 help
1914 This option select the standard 4kB Linux page size. On some
1915 R3000-family processors this is the only available page size. Using
1916 4kB page size will minimize memory consumption and is therefore
1917 recommended for low memory systems.
1918
1919 config PAGE_SIZE_8KB
1920 bool "8kB"
1921 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1922 help
1923 Using 8kB page size will result in higher performance kernel at
1924 the price of higher memory consumption. This option is available
1925 only on R8000 and cnMIPS processors. Note that you will need a
1926 suitable Linux distribution to support this.
1927
1928 config PAGE_SIZE_16KB
1929 bool "16kB"
1930 depends on !CPU_R3000 && !CPU_TX39XX
1931 help
1932 Using 16kB page size will result in higher performance kernel at
1933 the price of higher memory consumption. This option is available on
1934 all non-R3000 family processors. Note that you will need a suitable
1935 Linux distribution to support this.
1936
1937 config PAGE_SIZE_32KB
1938 bool "32kB"
1939 depends on CPU_CAVIUM_OCTEON
1940 help
1941 Using 32kB page size will result in higher performance kernel at
1942 the price of higher memory consumption. This option is available
1943 only on cnMIPS cores. Note that you will need a suitable Linux
1944 distribution to support this.
1945
1946 config PAGE_SIZE_64KB
1947 bool "64kB"
1948 depends on !CPU_R3000 && !CPU_TX39XX
1949 help
1950 Using 64kB page size will result in higher performance kernel at
1951 the price of higher memory consumption. This option is available on
1952 all non-R3000 family processor. Not that at the time of this
1953 writing this option is still high experimental.
1954
1955 endchoice
1956
1957 config FORCE_MAX_ZONEORDER
1958 int "Maximum zone order"
1959 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
1960 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
1961 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
1962 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
1963 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
1964 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
1965 range 11 64
1966 default "11"
1967 help
1968 The kernel memory allocator divides physically contiguous memory
1969 blocks into "zones", where each zone is a power of two number of
1970 pages. This option selects the largest power of two that the kernel
1971 keeps in the memory allocator. If you need to allocate very large
1972 blocks of physically contiguous memory, then you may need to
1973 increase this value.
1974
1975 This config option is actually maximum order plus one. For example,
1976 a value of 11 means that the largest free memory block is 2^10 pages.
1977
1978 The page size is not necessarily 4KB. Keep this in mind
1979 when choosing a value for this option.
1980
1981 config BOARD_SCACHE
1982 bool
1983
1984 config IP22_CPU_SCACHE
1985 bool
1986 select BOARD_SCACHE
1987
1988 #
1989 # Support for a MIPS32 / MIPS64 style S-caches
1990 #
1991 config MIPS_CPU_SCACHE
1992 bool
1993 select BOARD_SCACHE
1994
1995 config R5000_CPU_SCACHE
1996 bool
1997 select BOARD_SCACHE
1998
1999 config RM7000_CPU_SCACHE
2000 bool
2001 select BOARD_SCACHE
2002
2003 config SIBYTE_DMA_PAGEOPS
2004 bool "Use DMA to clear/copy pages"
2005 depends on CPU_SB1
2006 help
2007 Instead of using the CPU to zero and copy pages, use a Data Mover
2008 channel. These DMA channels are otherwise unused by the standard
2009 SiByte Linux port. Seems to give a small performance benefit.
2010
2011 config CPU_HAS_PREFETCH
2012 bool
2013
2014 config CPU_GENERIC_DUMP_TLB
2015 bool
2016 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2017
2018 config CPU_R4K_FPU
2019 bool
2020 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2021
2022 config CPU_R4K_CACHE_TLB
2023 bool
2024 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2025
2026 config MIPS_MT_SMP
2027 bool "MIPS MT SMP support (1 TC on each available VPE)"
2028 depends on SYS_SUPPORTS_MULTITHREADING
2029 select CPU_MIPSR2_IRQ_VI
2030 select CPU_MIPSR2_IRQ_EI
2031 select SYNC_R4K
2032 select MIPS_GIC_IPI
2033 select MIPS_MT
2034 select SMP
2035 select SMP_UP
2036 select SYS_SUPPORTS_SMP
2037 select SYS_SUPPORTS_SCHED_SMT
2038 select MIPS_PERF_SHARED_TC_COUNTERS
2039 help
2040 This is a kernel model which is known as SMVP. This is supported
2041 on cores with the MT ASE and uses the available VPEs to implement
2042 virtual processors which supports SMP. This is equivalent to the
2043 Intel Hyperthreading feature. For further information go to
2044 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2045
2046 config MIPS_MT
2047 bool
2048
2049 config SCHED_SMT
2050 bool "SMT (multithreading) scheduler support"
2051 depends on SYS_SUPPORTS_SCHED_SMT
2052 default n
2053 help
2054 SMT scheduler support improves the CPU scheduler's decision making
2055 when dealing with MIPS MT enabled cores at a cost of slightly
2056 increased overhead in some places. If unsure say N here.
2057
2058 config SYS_SUPPORTS_SCHED_SMT
2059 bool
2060
2061 config SYS_SUPPORTS_MULTITHREADING
2062 bool
2063
2064 config MIPS_MT_FPAFF
2065 bool "Dynamic FPU affinity for FP-intensive threads"
2066 default y
2067 depends on MIPS_MT_SMP
2068
2069 config MIPSR2_TO_R6_EMULATOR
2070 bool "MIPS R2-to-R6 emulator"
2071 depends on CPU_MIPSR6 && !SMP
2072 default y
2073 help
2074 Choose this option if you want to run non-R6 MIPS userland code.
2075 Even if you say 'Y' here, the emulator will still be disabled by
2076 default. You can enable it using the 'mipsr2emul' kernel option.
2077 The only reason this is a build-time option is to save ~14K from the
2078 final kernel image.
2079 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2080 depends on SMP && CPU_MIPSR6
2081
2082 config MIPS_VPE_LOADER
2083 bool "VPE loader support."
2084 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2085 select CPU_MIPSR2_IRQ_VI
2086 select CPU_MIPSR2_IRQ_EI
2087 select MIPS_MT
2088 help
2089 Includes a loader for loading an elf relocatable object
2090 onto another VPE and running it.
2091
2092 config MIPS_VPE_LOADER_CMP
2093 bool
2094 default "y"
2095 depends on MIPS_VPE_LOADER && MIPS_CMP
2096
2097 config MIPS_VPE_LOADER_MT
2098 bool
2099 default "y"
2100 depends on MIPS_VPE_LOADER && !MIPS_CMP
2101
2102 config MIPS_VPE_LOADER_TOM
2103 bool "Load VPE program into memory hidden from linux"
2104 depends on MIPS_VPE_LOADER
2105 default y
2106 help
2107 The loader can use memory that is present but has been hidden from
2108 Linux using the kernel command line option "mem=xxMB". It's up to
2109 you to ensure the amount you put in the option and the space your
2110 program requires is less or equal to the amount physically present.
2111
2112 config MIPS_VPE_APSP_API
2113 bool "Enable support for AP/SP API (RTLX)"
2114 depends on MIPS_VPE_LOADER
2115 help
2116
2117 config MIPS_VPE_APSP_API_CMP
2118 bool
2119 default "y"
2120 depends on MIPS_VPE_APSP_API && MIPS_CMP
2121
2122 config MIPS_VPE_APSP_API_MT
2123 bool
2124 default "y"
2125 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2126
2127 config MIPS_CMP
2128 bool "MIPS CMP framework support (DEPRECATED)"
2129 depends on SYS_SUPPORTS_MIPS_CMP
2130 select MIPS_GIC_IPI
2131 select SMP
2132 select SYNC_R4K
2133 select SYS_SUPPORTS_SMP
2134 select WEAK_ORDERING
2135 default n
2136 help
2137 Select this if you are using a bootloader which implements the "CMP
2138 framework" protocol (ie. YAMON) and want your kernel to make use of
2139 its ability to start secondary CPUs.
2140
2141 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2142 instead of this.
2143
2144 config MIPS_CPS
2145 bool "MIPS Coherent Processing System support"
2146 depends on SYS_SUPPORTS_MIPS_CPS
2147 select MIPS_CM
2148 select MIPS_CPC
2149 select MIPS_CPS_PM if HOTPLUG_CPU
2150 select MIPS_GIC_IPI
2151 select SMP
2152 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2153 select SYS_SUPPORTS_HOTPLUG_CPU
2154 select SYS_SUPPORTS_SMP
2155 select WEAK_ORDERING
2156 help
2157 Select this if you wish to run an SMP kernel across multiple cores
2158 within a MIPS Coherent Processing System. When this option is
2159 enabled the kernel will probe for other cores and boot them with
2160 no external assistance. It is safe to enable this when hardware
2161 support is unavailable.
2162
2163 config MIPS_CPS_PM
2164 depends on MIPS_CPS
2165 select MIPS_CPC
2166 bool
2167
2168 config MIPS_GIC_IPI
2169 bool
2170
2171 config MIPS_CM
2172 bool
2173
2174 config MIPS_CPC
2175 bool
2176
2177 config SB1_PASS_1_WORKAROUNDS
2178 bool
2179 depends on CPU_SB1_PASS_1
2180 default y
2181
2182 config SB1_PASS_2_WORKAROUNDS
2183 bool
2184 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2185 default y
2186
2187 config SB1_PASS_2_1_WORKAROUNDS
2188 bool
2189 depends on CPU_SB1 && CPU_SB1_PASS_2
2190 default y
2191
2192
2193 config ARCH_PHYS_ADDR_T_64BIT
2194 bool
2195
2196 choice
2197 prompt "SmartMIPS or microMIPS ASE support"
2198
2199 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2200 bool "None"
2201 help
2202 Select this if you want neither microMIPS nor SmartMIPS support
2203
2204 config CPU_HAS_SMARTMIPS
2205 depends on SYS_SUPPORTS_SMARTMIPS
2206 bool "SmartMIPS"
2207 help
2208 SmartMIPS is a extension of the MIPS32 architecture aimed at
2209 increased security at both hardware and software level for
2210 smartcards. Enabling this option will allow proper use of the
2211 SmartMIPS instructions by Linux applications. However a kernel with
2212 this option will not work on a MIPS core without SmartMIPS core. If
2213 you don't know you probably don't have SmartMIPS and should say N
2214 here.
2215
2216 config CPU_MICROMIPS
2217 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2218 bool "microMIPS"
2219 help
2220 When this option is enabled the kernel will be built using the
2221 microMIPS ISA
2222
2223 endchoice
2224
2225 config CPU_HAS_MSA
2226 bool "Support for the MIPS SIMD Architecture (EXPERIMENTAL)"
2227 depends on CPU_SUPPORTS_MSA
2228 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2229 help
2230 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2231 and a set of SIMD instructions to operate on them. When this option
2232 is enabled the kernel will support allocating & switching MSA
2233 vector register contexts. If you know that your kernel will only be
2234 running on CPUs which do not support MSA or that your userland will
2235 not be making use of it then you may wish to say N here to reduce
2236 the size & complexity of your kernel.
2237
2238 If unsure, say Y.
2239
2240 config CPU_HAS_WB
2241 bool
2242
2243 config XKS01
2244 bool
2245
2246 #
2247 # Vectored interrupt mode is an R2 feature
2248 #
2249 config CPU_MIPSR2_IRQ_VI
2250 bool
2251
2252 #
2253 # Extended interrupt mode is an R2 feature
2254 #
2255 config CPU_MIPSR2_IRQ_EI
2256 bool
2257
2258 config CPU_HAS_SYNC
2259 bool
2260 depends on !CPU_R3000
2261 default y
2262
2263 #
2264 # CPU non-features
2265 #
2266 config CPU_DADDI_WORKAROUNDS
2267 bool
2268
2269 config CPU_R4000_WORKAROUNDS
2270 bool
2271 select CPU_R4400_WORKAROUNDS
2272
2273 config CPU_R4400_WORKAROUNDS
2274 bool
2275
2276 #
2277 # - Highmem only makes sense for the 32-bit kernel.
2278 # - The current highmem code will only work properly on physically indexed
2279 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2280 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2281 # moment we protect the user and offer the highmem option only on machines
2282 # where it's known to be safe. This will not offer highmem on a few systems
2283 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2284 # indexed CPUs but we're playing safe.
2285 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2286 # know they might have memory configurations that could make use of highmem
2287 # support.
2288 #
2289 config HIGHMEM
2290 bool "High Memory Support"
2291 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2292
2293 config CPU_SUPPORTS_HIGHMEM
2294 bool
2295
2296 config SYS_SUPPORTS_HIGHMEM
2297 bool
2298
2299 config SYS_SUPPORTS_SMARTMIPS
2300 bool
2301
2302 config SYS_SUPPORTS_MICROMIPS
2303 bool
2304
2305 config SYS_SUPPORTS_MIPS16
2306 bool
2307 help
2308 This option must be set if a kernel might be executed on a MIPS16-
2309 enabled CPU even if MIPS16 is not actually being used. In other
2310 words, it makes the kernel MIPS16-tolerant.
2311
2312 config CPU_SUPPORTS_MSA
2313 bool
2314
2315 config ARCH_FLATMEM_ENABLE
2316 def_bool y
2317 depends on !NUMA && !CPU_LOONGSON2
2318
2319 config ARCH_DISCONTIGMEM_ENABLE
2320 bool
2321 default y if SGI_IP27
2322 help
2323 Say Y to support efficient handling of discontiguous physical memory,
2324 for architectures which are either NUMA (Non-Uniform Memory Access)
2325 or have huge holes in the physical address space for other reasons.
2326 See <file:Documentation/vm/numa> for more.
2327
2328 config ARCH_SPARSEMEM_ENABLE
2329 bool
2330 select SPARSEMEM_STATIC
2331
2332 config NUMA
2333 bool "NUMA Support"
2334 depends on SYS_SUPPORTS_NUMA
2335 help
2336 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2337 Access). This option improves performance on systems with more
2338 than two nodes; on two node systems it is generally better to
2339 leave it disabled; on single node systems disable this option
2340 disabled.
2341
2342 config SYS_SUPPORTS_NUMA
2343 bool
2344
2345 config NODES_SHIFT
2346 int
2347 default "6"
2348 depends on NEED_MULTIPLE_NODES
2349
2350 config HW_PERF_EVENTS
2351 bool "Enable hardware performance counter support for perf events"
2352 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2353 default y
2354 help
2355 Enable hardware performance counter support for perf events. If
2356 disabled, perf events will use software events only.
2357
2358 source "mm/Kconfig"
2359
2360 config SMP
2361 bool "Multi-Processing support"
2362 depends on SYS_SUPPORTS_SMP
2363 help
2364 This enables support for systems with more than one CPU. If you have
2365 a system with only one CPU, say N. If you have a system with more
2366 than one CPU, say Y.
2367
2368 If you say N here, the kernel will run on uni- and multiprocessor
2369 machines, but will use only one CPU of a multiprocessor machine. If
2370 you say Y here, the kernel will run on many, but not all,
2371 uniprocessor machines. On a uniprocessor machine, the kernel
2372 will run faster if you say N here.
2373
2374 People using multiprocessor machines who say Y here should also say
2375 Y to "Enhanced Real Time Clock Support", below.
2376
2377 See also the SMP-HOWTO available at
2378 <http://www.tldp.org/docs.html#howto>.
2379
2380 If you don't know what to do here, say N.
2381
2382 config SMP_UP
2383 bool
2384
2385 config SYS_SUPPORTS_MIPS_CMP
2386 bool
2387
2388 config SYS_SUPPORTS_MIPS_CPS
2389 bool
2390
2391 config SYS_SUPPORTS_SMP
2392 bool
2393
2394 config NR_CPUS_DEFAULT_4
2395 bool
2396
2397 config NR_CPUS_DEFAULT_8
2398 bool
2399
2400 config NR_CPUS_DEFAULT_16
2401 bool
2402
2403 config NR_CPUS_DEFAULT_32
2404 bool
2405
2406 config NR_CPUS_DEFAULT_64
2407 bool
2408
2409 config NR_CPUS
2410 int "Maximum number of CPUs (2-256)"
2411 range 2 256
2412 depends on SMP
2413 default "4" if NR_CPUS_DEFAULT_4
2414 default "8" if NR_CPUS_DEFAULT_8
2415 default "16" if NR_CPUS_DEFAULT_16
2416 default "32" if NR_CPUS_DEFAULT_32
2417 default "64" if NR_CPUS_DEFAULT_64
2418 help
2419 This allows you to specify the maximum number of CPUs which this
2420 kernel will support. The maximum supported value is 32 for 32-bit
2421 kernel and 64 for 64-bit kernels; the minimum value which makes
2422 sense is 1 for Qemu (useful only for kernel debugging purposes)
2423 and 2 for all others.
2424
2425 This is purely to save memory - each supported CPU adds
2426 approximately eight kilobytes to the kernel image. For best
2427 performance should round up your number of processors to the next
2428 power of two.
2429
2430 config MIPS_PERF_SHARED_TC_COUNTERS
2431 bool
2432
2433 #
2434 # Timer Interrupt Frequency Configuration
2435 #
2436
2437 choice
2438 prompt "Timer frequency"
2439 default HZ_250
2440 help
2441 Allows the configuration of the timer frequency.
2442
2443 config HZ_48
2444 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2445
2446 config HZ_100
2447 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2448
2449 config HZ_128
2450 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2451
2452 config HZ_250
2453 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2454
2455 config HZ_256
2456 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2457
2458 config HZ_1000
2459 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2460
2461 config HZ_1024
2462 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2463
2464 endchoice
2465
2466 config SYS_SUPPORTS_48HZ
2467 bool
2468
2469 config SYS_SUPPORTS_100HZ
2470 bool
2471
2472 config SYS_SUPPORTS_128HZ
2473 bool
2474
2475 config SYS_SUPPORTS_250HZ
2476 bool
2477
2478 config SYS_SUPPORTS_256HZ
2479 bool
2480
2481 config SYS_SUPPORTS_1000HZ
2482 bool
2483
2484 config SYS_SUPPORTS_1024HZ
2485 bool
2486
2487 config SYS_SUPPORTS_ARBIT_HZ
2488 bool
2489 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2490 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2491 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2492 !SYS_SUPPORTS_1024HZ
2493
2494 config HZ
2495 int
2496 default 48 if HZ_48
2497 default 100 if HZ_100
2498 default 128 if HZ_128
2499 default 250 if HZ_250
2500 default 256 if HZ_256
2501 default 1000 if HZ_1000
2502 default 1024 if HZ_1024
2503
2504 source "kernel/Kconfig.preempt"
2505
2506 config KEXEC
2507 bool "Kexec system call"
2508 help
2509 kexec is a system call that implements the ability to shutdown your
2510 current kernel, and to start another kernel. It is like a reboot
2511 but it is independent of the system firmware. And like a reboot
2512 you can start any kernel with it, not just Linux.
2513
2514 The name comes from the similarity to the exec system call.
2515
2516 It is an ongoing process to be certain the hardware in a machine
2517 is properly shutdown, so do not be surprised if this code does not
2518 initially work for you. As of this writing the exact hardware
2519 interface is strongly in flux, so no good recommendation can be
2520 made.
2521
2522 config CRASH_DUMP
2523 bool "Kernel crash dumps"
2524 help
2525 Generate crash dump after being started by kexec.
2526 This should be normally only set in special crash dump kernels
2527 which are loaded in the main kernel with kexec-tools into
2528 a specially reserved region and then later executed after
2529 a crash by kdump/kexec. The crash dump kernel must be compiled
2530 to a memory address not used by the main kernel or firmware using
2531 PHYSICAL_START.
2532
2533 config PHYSICAL_START
2534 hex "Physical address where the kernel is loaded"
2535 default "0xffffffff84000000" if 64BIT
2536 default "0x84000000" if 32BIT
2537 depends on CRASH_DUMP
2538 help
2539 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2540 If you plan to use kernel for capturing the crash dump change
2541 this value to start of the reserved region (the "X" value as
2542 specified in the "crashkernel=YM@XM" command line boot parameter
2543 passed to the panic-ed kernel).
2544
2545 config SECCOMP
2546 bool "Enable seccomp to safely compute untrusted bytecode"
2547 depends on PROC_FS
2548 default y
2549 help
2550 This kernel feature is useful for number crunching applications
2551 that may need to compute untrusted bytecode during their
2552 execution. By using pipes or other transports made available to
2553 the process as file descriptors supporting the read/write
2554 syscalls, it's possible to isolate those applications in
2555 their own address space using seccomp. Once seccomp is
2556 enabled via /proc/<pid>/seccomp, it cannot be disabled
2557 and the task is only allowed to execute a few safe syscalls
2558 defined by each seccomp mode.
2559
2560 If unsure, say Y. Only embedded should say N here.
2561
2562 config MIPS_O32_FP64_SUPPORT
2563 bool "Support for O32 binaries using 64-bit FP (EXPERIMENTAL)"
2564 depends on 32BIT || MIPS32_O32
2565 help
2566 When this is enabled, the kernel will support use of 64-bit floating
2567 point registers with binaries using the O32 ABI along with the
2568 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2569 32-bit MIPS systems this support is at the cost of increasing the
2570 size and complexity of the compiled FPU emulator. Thus if you are
2571 running a MIPS32 system and know that none of your userland binaries
2572 will require 64-bit floating point, you may wish to reduce the size
2573 of your kernel & potentially improve FP emulation performance by
2574 saying N here.
2575
2576 Although binutils currently supports use of this flag the details
2577 concerning its effect upon the O32 ABI in userland are still being
2578 worked on. In order to avoid userland becoming dependant upon current
2579 behaviour before the details have been finalised, this option should
2580 be considered experimental and only enabled by those working upon
2581 said details.
2582
2583 If unsure, say N.
2584
2585 config USE_OF
2586 bool
2587 select OF
2588 select OF_EARLY_FLATTREE
2589 select IRQ_DOMAIN
2590
2591 config BUILTIN_DTB
2592 bool
2593
2594 endmenu
2595
2596 config LOCKDEP_SUPPORT
2597 bool
2598 default y
2599
2600 config STACKTRACE_SUPPORT
2601 bool
2602 default y
2603
2604 source "init/Kconfig"
2605
2606 source "kernel/Kconfig.freezer"
2607
2608 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2609
2610 config HW_HAS_EISA
2611 bool
2612 config HW_HAS_PCI
2613 bool
2614
2615 config PCI
2616 bool "Support for PCI controller"
2617 depends on HW_HAS_PCI
2618 select PCI_DOMAINS
2619 select NO_GENERIC_PCI_IOPORT_MAP
2620 help
2621 Find out whether you have a PCI motherboard. PCI is the name of a
2622 bus system, i.e. the way the CPU talks to the other stuff inside
2623 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2624 say Y, otherwise N.
2625
2626 config HT_PCI
2627 bool "Support for HT-linked PCI"
2628 default y
2629 depends on CPU_LOONGSON3
2630 select PCI
2631 select PCI_DOMAINS
2632 help
2633 Loongson family machines use Hyper-Transport bus for inter-core
2634 connection and device connection. The PCI bus is a subordinate
2635 linked at HT. Choose Y for Loongson-3 based machines.
2636
2637 config PCI_DOMAINS
2638 bool
2639
2640 source "drivers/pci/Kconfig"
2641
2642 source "drivers/pci/pcie/Kconfig"
2643
2644 #
2645 # ISA support is now enabled via select. Too many systems still have the one
2646 # or other ISA chip on the board that users don't know about so don't expect
2647 # users to choose the right thing ...
2648 #
2649 config ISA
2650 bool
2651
2652 config EISA
2653 bool "EISA support"
2654 depends on HW_HAS_EISA
2655 select ISA
2656 select GENERIC_ISA_DMA
2657 ---help---
2658 The Extended Industry Standard Architecture (EISA) bus was
2659 developed as an open alternative to the IBM MicroChannel bus.
2660
2661 The EISA bus provided some of the features of the IBM MicroChannel
2662 bus while maintaining backward compatibility with cards made for
2663 the older ISA bus. The EISA bus saw limited use between 1988 and
2664 1995 when it was made obsolete by the PCI bus.
2665
2666 Say Y here if you are building a kernel for an EISA-based machine.
2667
2668 Otherwise, say N.
2669
2670 source "drivers/eisa/Kconfig"
2671
2672 config TC
2673 bool "TURBOchannel support"
2674 depends on MACH_DECSTATION
2675 help
2676 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2677 processors. TURBOchannel programming specifications are available
2678 at:
2679 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2680 and:
2681 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2682 Linux driver support status is documented at:
2683 <http://www.linux-mips.org/wiki/DECstation>
2684
2685 config MMU
2686 bool
2687 default y
2688
2689 config I8253
2690 bool
2691 select CLKSRC_I8253
2692 select CLKEVT_I8253
2693 select MIPS_EXTERNAL_TIMER
2694
2695 config ZONE_DMA
2696 bool
2697
2698 config ZONE_DMA32
2699 bool
2700
2701 source "drivers/pcmcia/Kconfig"
2702
2703 source "drivers/pci/hotplug/Kconfig"
2704
2705 config RAPIDIO
2706 tristate "RapidIO support"
2707 depends on PCI
2708 default n
2709 help
2710 If you say Y here, the kernel will include drivers and
2711 infrastructure code to support RapidIO interconnect devices.
2712
2713 source "drivers/rapidio/Kconfig"
2714
2715 endmenu
2716
2717 menu "Executable file formats"
2718
2719 source "fs/Kconfig.binfmt"
2720
2721 config TRAD_SIGNALS
2722 bool
2723
2724 config MIPS32_COMPAT
2725 bool
2726
2727 config COMPAT
2728 bool
2729
2730 config SYSVIPC_COMPAT
2731 bool
2732
2733 config MIPS32_O32
2734 bool "Kernel support for o32 binaries"
2735 depends on 64BIT
2736 select ARCH_WANT_OLD_COMPAT_IPC
2737 select COMPAT
2738 select MIPS32_COMPAT
2739 select SYSVIPC_COMPAT if SYSVIPC
2740 help
2741 Select this option if you want to run o32 binaries. These are pure
2742 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2743 existing binaries are in this format.
2744
2745 If unsure, say Y.
2746
2747 config MIPS32_N32
2748 bool "Kernel support for n32 binaries"
2749 depends on 64BIT
2750 select COMPAT
2751 select MIPS32_COMPAT
2752 select SYSVIPC_COMPAT if SYSVIPC
2753 help
2754 Select this option if you want to run n32 binaries. These are
2755 64-bit binaries using 32-bit quantities for addressing and certain
2756 data that would normally be 64-bit. They are used in special
2757 cases.
2758
2759 If unsure, say N.
2760
2761 config BINFMT_ELF32
2762 bool
2763 default y if MIPS32_O32 || MIPS32_N32
2764
2765 endmenu
2766
2767 menu "Power management options"
2768
2769 config ARCH_HIBERNATION_POSSIBLE
2770 def_bool y
2771 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2772
2773 config ARCH_SUSPEND_POSSIBLE
2774 def_bool y
2775 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2776
2777 source "kernel/power/Kconfig"
2778
2779 endmenu
2780
2781 config MIPS_EXTERNAL_TIMER
2782 bool
2783
2784 menu "CPU Power Management"
2785
2786 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2787 source "drivers/cpufreq/Kconfig"
2788 endif
2789
2790 source "drivers/cpuidle/Kconfig"
2791
2792 endmenu
2793
2794 source "net/Kconfig"
2795
2796 source "drivers/Kconfig"
2797
2798 source "drivers/firmware/Kconfig"
2799
2800 source "fs/Kconfig"
2801
2802 source "arch/mips/Kconfig.debug"
2803
2804 source "security/Kconfig"
2805
2806 source "crypto/Kconfig"
2807
2808 source "lib/Kconfig"
2809
2810 source "arch/mips/kvm/Kconfig"
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