MIPS: Kconfig: Disable SMP/CPS for 64-bit
[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_R5
381 select SYS_HAS_CPU_MIPS32_R6
382 select SYS_HAS_CPU_MIPS64_R1
383 select SYS_HAS_CPU_MIPS64_R2
384 select SYS_HAS_CPU_MIPS64_R6
385 select SYS_HAS_CPU_NEVADA
386 select SYS_HAS_CPU_RM7000
387 select SYS_SUPPORTS_32BIT_KERNEL
388 select SYS_SUPPORTS_64BIT_KERNEL
389 select SYS_SUPPORTS_BIG_ENDIAN
390 select SYS_SUPPORTS_HIGHMEM
391 select SYS_SUPPORTS_LITTLE_ENDIAN
392 select SYS_SUPPORTS_MICROMIPS
393 select SYS_SUPPORTS_MIPS_CMP
394 select SYS_SUPPORTS_MIPS_CPS
395 select SYS_SUPPORTS_MIPS16
396 select SYS_SUPPORTS_MULTITHREADING
397 select SYS_SUPPORTS_SMARTMIPS
398 select SYS_SUPPORTS_ZBOOT
399 help
400 This enables support for the MIPS Technologies Malta evaluation
401 board.
402
403 config MIPS_SEAD3
404 bool "MIPS SEAD3 board"
405 select BOOT_ELF32
406 select BOOT_RAW
407 select BUILTIN_DTB
408 select CEVT_R4K
409 select CSRC_R4K
410 select CLKSRC_MIPS_GIC
411 select CPU_MIPSR2_IRQ_VI
412 select CPU_MIPSR2_IRQ_EI
413 select DMA_NONCOHERENT
414 select IRQ_CPU
415 select MIPS_GIC
416 select LIBFDT
417 select MIPS_MSC
418 select SYS_HAS_CPU_MIPS32_R1
419 select SYS_HAS_CPU_MIPS32_R2
420 select SYS_HAS_CPU_MIPS64_R1
421 select SYS_HAS_EARLY_PRINTK
422 select SYS_SUPPORTS_32BIT_KERNEL
423 select SYS_SUPPORTS_64BIT_KERNEL
424 select SYS_SUPPORTS_BIG_ENDIAN
425 select SYS_SUPPORTS_LITTLE_ENDIAN
426 select SYS_SUPPORTS_SMARTMIPS
427 select SYS_SUPPORTS_MICROMIPS
428 select SYS_SUPPORTS_MIPS16
429 select USB_EHCI_BIG_ENDIAN_DESC
430 select USB_EHCI_BIG_ENDIAN_MMIO
431 select USE_OF
432 help
433 This enables support for the MIPS Technologies SEAD3 evaluation
434 board.
435
436 config NEC_MARKEINS
437 bool "NEC EMMA2RH Mark-eins board"
438 select SOC_EMMA2RH
439 select HW_HAS_PCI
440 help
441 This enables support for the NEC Electronics Mark-eins boards.
442
443 config MACH_VR41XX
444 bool "NEC VR4100 series based machines"
445 select CEVT_R4K
446 select CSRC_R4K
447 select SYS_HAS_CPU_VR41XX
448 select SYS_SUPPORTS_MIPS16
449 select ARCH_REQUIRE_GPIOLIB
450
451 config NXP_STB220
452 bool "NXP STB220 board"
453 select SOC_PNX833X
454 help
455 Support for NXP Semiconductors STB220 Development Board.
456
457 config NXP_STB225
458 bool "NXP 225 board"
459 select SOC_PNX833X
460 select SOC_PNX8335
461 help
462 Support for NXP Semiconductors STB225 Development Board.
463
464 config PMC_MSP
465 bool "PMC-Sierra MSP chipsets"
466 select CEVT_R4K
467 select CSRC_R4K
468 select DMA_NONCOHERENT
469 select SWAP_IO_SPACE
470 select NO_EXCEPT_FILL
471 select BOOT_RAW
472 select SYS_HAS_CPU_MIPS32_R1
473 select SYS_HAS_CPU_MIPS32_R2
474 select SYS_SUPPORTS_32BIT_KERNEL
475 select SYS_SUPPORTS_BIG_ENDIAN
476 select SYS_SUPPORTS_MIPS16
477 select IRQ_CPU
478 select SERIAL_8250
479 select SERIAL_8250_CONSOLE
480 select USB_EHCI_BIG_ENDIAN_MMIO
481 select USB_EHCI_BIG_ENDIAN_DESC
482 help
483 This adds support for the PMC-Sierra family of Multi-Service
484 Processor System-On-A-Chips. These parts include a number
485 of integrated peripherals, interfaces and DSPs in addition to
486 a variety of MIPS cores.
487
488 config RALINK
489 bool "Ralink based machines"
490 select CEVT_R4K
491 select CSRC_R4K
492 select BOOT_RAW
493 select DMA_NONCOHERENT
494 select IRQ_CPU
495 select USE_OF
496 select SYS_HAS_CPU_MIPS32_R1
497 select SYS_HAS_CPU_MIPS32_R2
498 select SYS_SUPPORTS_32BIT_KERNEL
499 select SYS_SUPPORTS_LITTLE_ENDIAN
500 select SYS_SUPPORTS_MIPS16
501 select SYS_HAS_EARLY_PRINTK
502 select HAVE_MACH_CLKDEV
503 select CLKDEV_LOOKUP
504 select ARCH_HAS_RESET_CONTROLLER
505 select RESET_CONTROLLER
506
507 config SGI_IP22
508 bool "SGI IP22 (Indy/Indigo2)"
509 select FW_ARC
510 select FW_ARC32
511 select BOOT_ELF32
512 select CEVT_R4K
513 select CSRC_R4K
514 select DEFAULT_SGI_PARTITION
515 select DMA_NONCOHERENT
516 select HW_HAS_EISA
517 select I8253
518 select I8259
519 select IP22_CPU_SCACHE
520 select IRQ_CPU
521 select GENERIC_ISA_DMA_SUPPORT_BROKEN
522 select SGI_HAS_I8042
523 select SGI_HAS_INDYDOG
524 select SGI_HAS_HAL2
525 select SGI_HAS_SEEQ
526 select SGI_HAS_WD93
527 select SGI_HAS_ZILOG
528 select SWAP_IO_SPACE
529 select SYS_HAS_CPU_R4X00
530 select SYS_HAS_CPU_R5000
531 #
532 # Disable EARLY_PRINTK for now since it leads to overwritten prom
533 # memory during early boot on some machines.
534 #
535 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
536 # for a more details discussion
537 #
538 # select SYS_HAS_EARLY_PRINTK
539 select SYS_SUPPORTS_32BIT_KERNEL
540 select SYS_SUPPORTS_64BIT_KERNEL
541 select SYS_SUPPORTS_BIG_ENDIAN
542 select MIPS_L1_CACHE_SHIFT_7
543 help
544 This are the SGI Indy, Challenge S and Indigo2, as well as certain
545 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
546 that runs on these, say Y here.
547
548 config SGI_IP27
549 bool "SGI IP27 (Origin200/2000)"
550 select FW_ARC
551 select FW_ARC64
552 select BOOT_ELF64
553 select DEFAULT_SGI_PARTITION
554 select DMA_COHERENT
555 select SYS_HAS_EARLY_PRINTK
556 select HW_HAS_PCI
557 select NR_CPUS_DEFAULT_64
558 select SYS_HAS_CPU_R10000
559 select SYS_SUPPORTS_64BIT_KERNEL
560 select SYS_SUPPORTS_BIG_ENDIAN
561 select SYS_SUPPORTS_NUMA
562 select SYS_SUPPORTS_SMP
563 select MIPS_L1_CACHE_SHIFT_7
564 help
565 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
566 workstations. To compile a Linux kernel that runs on these, say Y
567 here.
568
569 config SGI_IP28
570 bool "SGI IP28 (Indigo2 R10k)"
571 select FW_ARC
572 select FW_ARC64
573 select BOOT_ELF64
574 select CEVT_R4K
575 select CSRC_R4K
576 select DEFAULT_SGI_PARTITION
577 select DMA_NONCOHERENT
578 select GENERIC_ISA_DMA_SUPPORT_BROKEN
579 select IRQ_CPU
580 select HW_HAS_EISA
581 select I8253
582 select I8259
583 select SGI_HAS_I8042
584 select SGI_HAS_INDYDOG
585 select SGI_HAS_HAL2
586 select SGI_HAS_SEEQ
587 select SGI_HAS_WD93
588 select SGI_HAS_ZILOG
589 select SWAP_IO_SPACE
590 select SYS_HAS_CPU_R10000
591 #
592 # Disable EARLY_PRINTK for now since it leads to overwritten prom
593 # memory during early boot on some machines.
594 #
595 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
596 # for a more details discussion
597 #
598 # select SYS_HAS_EARLY_PRINTK
599 select SYS_SUPPORTS_64BIT_KERNEL
600 select SYS_SUPPORTS_BIG_ENDIAN
601 select MIPS_L1_CACHE_SHIFT_7
602 help
603 This is the SGI Indigo2 with R10000 processor. To compile a Linux
604 kernel that runs on these, say Y here.
605
606 config SGI_IP32
607 bool "SGI IP32 (O2)"
608 select FW_ARC
609 select FW_ARC32
610 select BOOT_ELF32
611 select CEVT_R4K
612 select CSRC_R4K
613 select DMA_NONCOHERENT
614 select HW_HAS_PCI
615 select IRQ_CPU
616 select R5000_CPU_SCACHE
617 select RM7000_CPU_SCACHE
618 select SYS_HAS_CPU_R5000
619 select SYS_HAS_CPU_R10000 if BROKEN
620 select SYS_HAS_CPU_RM7000
621 select SYS_HAS_CPU_NEVADA
622 select SYS_SUPPORTS_64BIT_KERNEL
623 select SYS_SUPPORTS_BIG_ENDIAN
624 help
625 If you want this kernel to run on SGI O2 workstation, say Y here.
626
627 config SIBYTE_CRHINE
628 bool "Sibyte BCM91120C-CRhine"
629 select BOOT_ELF32
630 select DMA_COHERENT
631 select SIBYTE_BCM1120
632 select SWAP_IO_SPACE
633 select SYS_HAS_CPU_SB1
634 select SYS_SUPPORTS_BIG_ENDIAN
635 select SYS_SUPPORTS_LITTLE_ENDIAN
636
637 config SIBYTE_CARMEL
638 bool "Sibyte BCM91120x-Carmel"
639 select BOOT_ELF32
640 select DMA_COHERENT
641 select SIBYTE_BCM1120
642 select SWAP_IO_SPACE
643 select SYS_HAS_CPU_SB1
644 select SYS_SUPPORTS_BIG_ENDIAN
645 select SYS_SUPPORTS_LITTLE_ENDIAN
646
647 config SIBYTE_CRHONE
648 bool "Sibyte BCM91125C-CRhone"
649 select BOOT_ELF32
650 select DMA_COHERENT
651 select SIBYTE_BCM1125
652 select SWAP_IO_SPACE
653 select SYS_HAS_CPU_SB1
654 select SYS_SUPPORTS_BIG_ENDIAN
655 select SYS_SUPPORTS_HIGHMEM
656 select SYS_SUPPORTS_LITTLE_ENDIAN
657
658 config SIBYTE_RHONE
659 bool "Sibyte BCM91125E-Rhone"
660 select BOOT_ELF32
661 select DMA_COHERENT
662 select SIBYTE_BCM1125H
663 select SWAP_IO_SPACE
664 select SYS_HAS_CPU_SB1
665 select SYS_SUPPORTS_BIG_ENDIAN
666 select SYS_SUPPORTS_LITTLE_ENDIAN
667
668 config SIBYTE_SWARM
669 bool "Sibyte BCM91250A-SWARM"
670 select BOOT_ELF32
671 select DMA_COHERENT
672 select HAVE_PATA_PLATFORM
673 select SIBYTE_SB1250
674 select SWAP_IO_SPACE
675 select SYS_HAS_CPU_SB1
676 select SYS_SUPPORTS_BIG_ENDIAN
677 select SYS_SUPPORTS_HIGHMEM
678 select SYS_SUPPORTS_LITTLE_ENDIAN
679 select ZONE_DMA32 if 64BIT
680
681 config SIBYTE_LITTLESUR
682 bool "Sibyte BCM91250C2-LittleSur"
683 select BOOT_ELF32
684 select DMA_COHERENT
685 select HAVE_PATA_PLATFORM
686 select SIBYTE_SB1250
687 select SWAP_IO_SPACE
688 select SYS_HAS_CPU_SB1
689 select SYS_SUPPORTS_BIG_ENDIAN
690 select SYS_SUPPORTS_HIGHMEM
691 select SYS_SUPPORTS_LITTLE_ENDIAN
692
693 config SIBYTE_SENTOSA
694 bool "Sibyte BCM91250E-Sentosa"
695 select BOOT_ELF32
696 select DMA_COHERENT
697 select SIBYTE_SB1250
698 select SWAP_IO_SPACE
699 select SYS_HAS_CPU_SB1
700 select SYS_SUPPORTS_BIG_ENDIAN
701 select SYS_SUPPORTS_LITTLE_ENDIAN
702
703 config SIBYTE_BIGSUR
704 bool "Sibyte BCM91480B-BigSur"
705 select BOOT_ELF32
706 select DMA_COHERENT
707 select NR_CPUS_DEFAULT_4
708 select SIBYTE_BCM1x80
709 select SWAP_IO_SPACE
710 select SYS_HAS_CPU_SB1
711 select SYS_SUPPORTS_BIG_ENDIAN
712 select SYS_SUPPORTS_HIGHMEM
713 select SYS_SUPPORTS_LITTLE_ENDIAN
714 select ZONE_DMA32 if 64BIT
715
716 config SNI_RM
717 bool "SNI RM200/300/400"
718 select FW_ARC if CPU_LITTLE_ENDIAN
719 select FW_ARC32 if CPU_LITTLE_ENDIAN
720 select FW_SNIPROM if CPU_BIG_ENDIAN
721 select ARCH_MAY_HAVE_PC_FDC
722 select BOOT_ELF32
723 select CEVT_R4K
724 select CSRC_R4K
725 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
726 select DMA_NONCOHERENT
727 select GENERIC_ISA_DMA
728 select HAVE_PCSPKR_PLATFORM
729 select HW_HAS_EISA
730 select HW_HAS_PCI
731 select IRQ_CPU
732 select I8253
733 select I8259
734 select ISA
735 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
736 select SYS_HAS_CPU_R4X00
737 select SYS_HAS_CPU_R5000
738 select SYS_HAS_CPU_R10000
739 select R5000_CPU_SCACHE
740 select SYS_HAS_EARLY_PRINTK
741 select SYS_SUPPORTS_32BIT_KERNEL
742 select SYS_SUPPORTS_64BIT_KERNEL
743 select SYS_SUPPORTS_BIG_ENDIAN
744 select SYS_SUPPORTS_HIGHMEM
745 select SYS_SUPPORTS_LITTLE_ENDIAN
746 help
747 The SNI RM200/300/400 are MIPS-based machines manufactured by
748 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
749 Technology and now in turn merged with Fujitsu. Say Y here to
750 support this machine type.
751
752 config MACH_TX39XX
753 bool "Toshiba TX39 series based machines"
754
755 config MACH_TX49XX
756 bool "Toshiba TX49 series based machines"
757
758 config MIKROTIK_RB532
759 bool "Mikrotik RB532 boards"
760 select CEVT_R4K
761 select CSRC_R4K
762 select DMA_NONCOHERENT
763 select HW_HAS_PCI
764 select IRQ_CPU
765 select SYS_HAS_CPU_MIPS32_R1
766 select SYS_SUPPORTS_32BIT_KERNEL
767 select SYS_SUPPORTS_LITTLE_ENDIAN
768 select SWAP_IO_SPACE
769 select BOOT_RAW
770 select ARCH_REQUIRE_GPIOLIB
771 select MIPS_L1_CACHE_SHIFT_4
772 help
773 Support the Mikrotik(tm) RouterBoard 532 series,
774 based on the IDT RC32434 SoC.
775
776 config CAVIUM_OCTEON_SOC
777 bool "Cavium Networks Octeon SoC based boards"
778 select CEVT_R4K
779 select ARCH_PHYS_ADDR_T_64BIT
780 select DMA_COHERENT
781 select SYS_SUPPORTS_64BIT_KERNEL
782 select SYS_SUPPORTS_BIG_ENDIAN
783 select EDAC_SUPPORT
784 select SYS_SUPPORTS_HOTPLUG_CPU
785 select SYS_HAS_EARLY_PRINTK
786 select SYS_HAS_CPU_CAVIUM_OCTEON
787 select SWAP_IO_SPACE
788 select HW_HAS_PCI
789 select ZONE_DMA32
790 select HOLES_IN_ZONE
791 select ARCH_REQUIRE_GPIOLIB
792 select LIBFDT
793 select USE_OF
794 select ARCH_SPARSEMEM_ENABLE
795 select SYS_SUPPORTS_SMP
796 select NR_CPUS_DEFAULT_16
797 select BUILTIN_DTB
798 help
799 This option supports all of the Octeon reference boards from Cavium
800 Networks. It builds a kernel that dynamically determines the Octeon
801 CPU type and supports all known board reference implementations.
802 Some of the supported boards are:
803 EBT3000
804 EBH3000
805 EBH3100
806 Thunder
807 Kodama
808 Hikari
809 Say Y here for most Octeon reference boards.
810
811 config NLM_XLR_BOARD
812 bool "Netlogic XLR/XLS based systems"
813 select BOOT_ELF32
814 select NLM_COMMON
815 select SYS_HAS_CPU_XLR
816 select SYS_SUPPORTS_SMP
817 select HW_HAS_PCI
818 select SWAP_IO_SPACE
819 select SYS_SUPPORTS_32BIT_KERNEL
820 select SYS_SUPPORTS_64BIT_KERNEL
821 select ARCH_PHYS_ADDR_T_64BIT
822 select SYS_SUPPORTS_BIG_ENDIAN
823 select SYS_SUPPORTS_HIGHMEM
824 select DMA_COHERENT
825 select NR_CPUS_DEFAULT_32
826 select CEVT_R4K
827 select CSRC_R4K
828 select IRQ_CPU
829 select ZONE_DMA32 if 64BIT
830 select SYNC_R4K
831 select SYS_HAS_EARLY_PRINTK
832 select SYS_SUPPORTS_ZBOOT
833 select SYS_SUPPORTS_ZBOOT_UART16550
834 help
835 Support for systems based on Netlogic XLR and XLS processors.
836 Say Y here if you have a XLR or XLS based board.
837
838 config NLM_XLP_BOARD
839 bool "Netlogic XLP based systems"
840 select BOOT_ELF32
841 select NLM_COMMON
842 select SYS_HAS_CPU_XLP
843 select SYS_SUPPORTS_SMP
844 select HW_HAS_PCI
845 select SYS_SUPPORTS_32BIT_KERNEL
846 select SYS_SUPPORTS_64BIT_KERNEL
847 select ARCH_PHYS_ADDR_T_64BIT
848 select SYS_SUPPORTS_BIG_ENDIAN
849 select SYS_SUPPORTS_LITTLE_ENDIAN
850 select SYS_SUPPORTS_HIGHMEM
851 select DMA_COHERENT
852 select NR_CPUS_DEFAULT_32
853 select CEVT_R4K
854 select CSRC_R4K
855 select IRQ_CPU
856 select ZONE_DMA32 if 64BIT
857 select SYNC_R4K
858 select SYS_HAS_EARLY_PRINTK
859 select USE_OF
860 select SYS_SUPPORTS_ZBOOT
861 select SYS_SUPPORTS_ZBOOT_UART16550
862 help
863 This board is based on Netlogic XLP Processor.
864 Say Y here if you have a XLP based board.
865
866 config MIPS_PARAVIRT
867 bool "Para-Virtualized guest system"
868 select CEVT_R4K
869 select CSRC_R4K
870 select DMA_COHERENT
871 select SYS_SUPPORTS_64BIT_KERNEL
872 select SYS_SUPPORTS_32BIT_KERNEL
873 select SYS_SUPPORTS_BIG_ENDIAN
874 select SYS_SUPPORTS_SMP
875 select NR_CPUS_DEFAULT_4
876 select SYS_HAS_EARLY_PRINTK
877 select SYS_HAS_CPU_MIPS32_R2
878 select SYS_HAS_CPU_MIPS64_R2
879 select SYS_HAS_CPU_CAVIUM_OCTEON
880 select HW_HAS_PCI
881 select SWAP_IO_SPACE
882 help
883 This option supports guest running under ????
884
885 endchoice
886
887 source "arch/mips/alchemy/Kconfig"
888 source "arch/mips/ath25/Kconfig"
889 source "arch/mips/ath79/Kconfig"
890 source "arch/mips/bcm47xx/Kconfig"
891 source "arch/mips/bcm63xx/Kconfig"
892 source "arch/mips/jazz/Kconfig"
893 source "arch/mips/jz4740/Kconfig"
894 source "arch/mips/lantiq/Kconfig"
895 source "arch/mips/lasat/Kconfig"
896 source "arch/mips/pmcs-msp71xx/Kconfig"
897 source "arch/mips/ralink/Kconfig"
898 source "arch/mips/sgi-ip27/Kconfig"
899 source "arch/mips/sibyte/Kconfig"
900 source "arch/mips/txx9/Kconfig"
901 source "arch/mips/vr41xx/Kconfig"
902 source "arch/mips/cavium-octeon/Kconfig"
903 source "arch/mips/loongson/Kconfig"
904 source "arch/mips/loongson1/Kconfig"
905 source "arch/mips/netlogic/Kconfig"
906 source "arch/mips/paravirt/Kconfig"
907
908 endmenu
909
910 config RWSEM_GENERIC_SPINLOCK
911 bool
912 default y
913
914 config RWSEM_XCHGADD_ALGORITHM
915 bool
916
917 config ARCH_HAS_ILOG2_U32
918 bool
919 default n
920
921 config ARCH_HAS_ILOG2_U64
922 bool
923 default n
924
925 config GENERIC_HWEIGHT
926 bool
927 default y
928
929 config GENERIC_CALIBRATE_DELAY
930 bool
931 default y
932
933 config SCHED_OMIT_FRAME_POINTER
934 bool
935 default y
936
937 #
938 # Select some configuration options automatically based on user selections.
939 #
940 config FW_ARC
941 bool
942
943 config ARCH_MAY_HAVE_PC_FDC
944 bool
945
946 config BOOT_RAW
947 bool
948
949 config CEVT_BCM1480
950 bool
951
952 config CEVT_DS1287
953 bool
954
955 config CEVT_GT641XX
956 bool
957
958 config CEVT_R4K
959 bool
960
961 config CEVT_SB1250
962 bool
963
964 config CEVT_TXX9
965 bool
966
967 config CSRC_BCM1480
968 bool
969
970 config CSRC_IOASIC
971 bool
972
973 config CSRC_R4K
974 bool
975
976 config CSRC_SB1250
977 bool
978
979 config GPIO_TXX9
980 select ARCH_REQUIRE_GPIOLIB
981 bool
982
983 config FW_CFE
984 bool
985
986 config ARCH_DMA_ADDR_T_64BIT
987 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
988
989 config DMA_MAYBE_COHERENT
990 select DMA_NONCOHERENT
991 bool
992
993 config DMA_COHERENT
994 bool
995
996 config DMA_NONCOHERENT
997 bool
998 select NEED_DMA_MAP_STATE
999
1000 config NEED_DMA_MAP_STATE
1001 bool
1002
1003 config SYS_HAS_EARLY_PRINTK
1004 bool
1005
1006 config HOTPLUG_CPU
1007 bool "Support for hot-pluggable CPUs"
1008 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
1009 help
1010 Say Y here to allow turning CPUs off and on. CPUs can be
1011 controlled through /sys/devices/system/cpu.
1012 (Note: power management support will enable this option
1013 automatically on SMP systems. )
1014 Say N if you want to disable CPU hotplug.
1015
1016 config SYS_SUPPORTS_HOTPLUG_CPU
1017 bool
1018
1019 config I8259
1020 bool
1021 select IRQ_DOMAIN
1022
1023 config MIPS_BONITO64
1024 bool
1025
1026 config MIPS_MSC
1027 bool
1028
1029 config MIPS_NILE4
1030 bool
1031
1032 config SYNC_R4K
1033 bool
1034
1035 config MIPS_MACHINE
1036 def_bool n
1037
1038 config NO_IOPORT_MAP
1039 def_bool n
1040
1041 config GENERIC_CSUM
1042 bool
1043
1044 config GENERIC_ISA_DMA
1045 bool
1046 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1047 select ISA_DMA_API
1048
1049 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1050 bool
1051 select GENERIC_ISA_DMA
1052
1053 config ISA_DMA_API
1054 bool
1055
1056 config HOLES_IN_ZONE
1057 bool
1058
1059 #
1060 # Endianness selection. Sufficiently obscure so many users don't know what to
1061 # answer,so we try hard to limit the available choices. Also the use of a
1062 # choice statement should be more obvious to the user.
1063 #
1064 choice
1065 prompt "Endianness selection"
1066 help
1067 Some MIPS machines can be configured for either little or big endian
1068 byte order. These modes require different kernels and a different
1069 Linux distribution. In general there is one preferred byteorder for a
1070 particular system but some systems are just as commonly used in the
1071 one or the other endianness.
1072
1073 config CPU_BIG_ENDIAN
1074 bool "Big endian"
1075 depends on SYS_SUPPORTS_BIG_ENDIAN
1076
1077 config CPU_LITTLE_ENDIAN
1078 bool "Little endian"
1079 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1080
1081 endchoice
1082
1083 config EXPORT_UASM
1084 bool
1085
1086 config SYS_SUPPORTS_APM_EMULATION
1087 bool
1088
1089 config SYS_SUPPORTS_BIG_ENDIAN
1090 bool
1091
1092 config SYS_SUPPORTS_LITTLE_ENDIAN
1093 bool
1094
1095 config SYS_SUPPORTS_HUGETLBFS
1096 bool
1097 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1098 default y
1099
1100 config MIPS_HUGE_TLB_SUPPORT
1101 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1102
1103 config IRQ_CPU
1104 bool
1105 select IRQ_DOMAIN
1106
1107 config IRQ_CPU_RM7K
1108 bool
1109
1110 config IRQ_MSP_SLP
1111 bool
1112
1113 config IRQ_MSP_CIC
1114 bool
1115
1116 config IRQ_TXX9
1117 bool
1118
1119 config IRQ_GT641XX
1120 bool
1121
1122 config PCI_GT64XXX_PCI0
1123 bool
1124
1125 config NO_EXCEPT_FILL
1126 bool
1127
1128 config SOC_EMMA2RH
1129 bool
1130 select CEVT_R4K
1131 select CSRC_R4K
1132 select DMA_NONCOHERENT
1133 select IRQ_CPU
1134 select SWAP_IO_SPACE
1135 select SYS_HAS_CPU_R5500
1136 select SYS_SUPPORTS_32BIT_KERNEL
1137 select SYS_SUPPORTS_64BIT_KERNEL
1138 select SYS_SUPPORTS_BIG_ENDIAN
1139
1140 config SOC_PNX833X
1141 bool
1142 select CEVT_R4K
1143 select CSRC_R4K
1144 select IRQ_CPU
1145 select DMA_NONCOHERENT
1146 select SYS_HAS_CPU_MIPS32_R2
1147 select SYS_SUPPORTS_32BIT_KERNEL
1148 select SYS_SUPPORTS_LITTLE_ENDIAN
1149 select SYS_SUPPORTS_BIG_ENDIAN
1150 select SYS_SUPPORTS_MIPS16
1151 select CPU_MIPSR2_IRQ_VI
1152
1153 config SOC_PNX8335
1154 bool
1155 select SOC_PNX833X
1156
1157 config MIPS_SPRAM
1158 bool
1159
1160 config SWAP_IO_SPACE
1161 bool
1162
1163 config SGI_HAS_INDYDOG
1164 bool
1165
1166 config SGI_HAS_HAL2
1167 bool
1168
1169 config SGI_HAS_SEEQ
1170 bool
1171
1172 config SGI_HAS_WD93
1173 bool
1174
1175 config SGI_HAS_ZILOG
1176 bool
1177
1178 config SGI_HAS_I8042
1179 bool
1180
1181 config DEFAULT_SGI_PARTITION
1182 bool
1183
1184 config FW_ARC32
1185 bool
1186
1187 config FW_SNIPROM
1188 bool
1189
1190 config BOOT_ELF32
1191 bool
1192
1193 config MIPS_L1_CACHE_SHIFT_4
1194 bool
1195
1196 config MIPS_L1_CACHE_SHIFT_5
1197 bool
1198
1199 config MIPS_L1_CACHE_SHIFT_6
1200 bool
1201
1202 config MIPS_L1_CACHE_SHIFT_7
1203 bool
1204
1205 config MIPS_L1_CACHE_SHIFT
1206 int
1207 default "4" if MIPS_L1_CACHE_SHIFT_4
1208 default "5" if MIPS_L1_CACHE_SHIFT_5
1209 default "6" if MIPS_L1_CACHE_SHIFT_6
1210 default "7" if MIPS_L1_CACHE_SHIFT_7
1211 default "5"
1212
1213 config HAVE_STD_PC_SERIAL_PORT
1214 bool
1215
1216 config ARC_CONSOLE
1217 bool "ARC console support"
1218 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1219
1220 config ARC_MEMORY
1221 bool
1222 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1223 default y
1224
1225 config ARC_PROMLIB
1226 bool
1227 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1228 default y
1229
1230 config FW_ARC64
1231 bool
1232
1233 config BOOT_ELF64
1234 bool
1235
1236 menu "CPU selection"
1237
1238 choice
1239 prompt "CPU type"
1240 default CPU_R4X00
1241
1242 config CPU_LOONGSON3
1243 bool "Loongson 3 CPU"
1244 depends on SYS_HAS_CPU_LOONGSON3
1245 select CPU_SUPPORTS_64BIT_KERNEL
1246 select CPU_SUPPORTS_HIGHMEM
1247 select CPU_SUPPORTS_HUGEPAGES
1248 select WEAK_ORDERING
1249 select WEAK_REORDERING_BEYOND_LLSC
1250 help
1251 The Loongson 3 processor implements the MIPS64R2 instruction
1252 set with many extensions.
1253
1254 config CPU_LOONGSON2E
1255 bool "Loongson 2E"
1256 depends on SYS_HAS_CPU_LOONGSON2E
1257 select CPU_LOONGSON2
1258 help
1259 The Loongson 2E processor implements the MIPS III instruction set
1260 with many extensions.
1261
1262 It has an internal FPGA northbridge, which is compatible to
1263 bonito64.
1264
1265 config CPU_LOONGSON2F
1266 bool "Loongson 2F"
1267 depends on SYS_HAS_CPU_LOONGSON2F
1268 select CPU_LOONGSON2
1269 select ARCH_REQUIRE_GPIOLIB
1270 help
1271 The Loongson 2F processor implements the MIPS III instruction set
1272 with many extensions.
1273
1274 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1275 have a similar programming interface with FPGA northbridge used in
1276 Loongson2E.
1277
1278 config CPU_LOONGSON1B
1279 bool "Loongson 1B"
1280 depends on SYS_HAS_CPU_LOONGSON1B
1281 select CPU_LOONGSON1
1282 help
1283 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1284 release 2 instruction set.
1285
1286 config CPU_MIPS32_R1
1287 bool "MIPS32 Release 1"
1288 depends on SYS_HAS_CPU_MIPS32_R1
1289 select CPU_HAS_PREFETCH
1290 select CPU_SUPPORTS_32BIT_KERNEL
1291 select CPU_SUPPORTS_HIGHMEM
1292 help
1293 Choose this option to build a kernel for release 1 or later of the
1294 MIPS32 architecture. Most modern embedded systems with a 32-bit
1295 MIPS processor are based on a MIPS32 processor. If you know the
1296 specific type of processor in your system, choose those that one
1297 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1298 Release 2 of the MIPS32 architecture is available since several
1299 years so chances are you even have a MIPS32 Release 2 processor
1300 in which case you should choose CPU_MIPS32_R2 instead for better
1301 performance.
1302
1303 config CPU_MIPS32_R2
1304 bool "MIPS32 Release 2"
1305 depends on SYS_HAS_CPU_MIPS32_R2
1306 select CPU_HAS_PREFETCH
1307 select CPU_SUPPORTS_32BIT_KERNEL
1308 select CPU_SUPPORTS_HIGHMEM
1309 select CPU_SUPPORTS_MSA
1310 select HAVE_KVM
1311 help
1312 Choose this option to build a kernel for release 2 or later of the
1313 MIPS32 architecture. Most modern embedded systems with a 32-bit
1314 MIPS processor are based on a MIPS32 processor. If you know the
1315 specific type of processor in your system, choose those that one
1316 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1317
1318 config CPU_MIPS32_R6
1319 bool "MIPS32 Release 6 (EXPERIMENTAL)"
1320 depends on SYS_HAS_CPU_MIPS32_R6
1321 select CPU_HAS_PREFETCH
1322 select CPU_SUPPORTS_32BIT_KERNEL
1323 select CPU_SUPPORTS_HIGHMEM
1324 select CPU_SUPPORTS_MSA
1325 select GENERIC_CSUM
1326 select HAVE_KVM
1327 select MIPS_O32_FP64_SUPPORT
1328 help
1329 Choose this option to build a kernel for release 6 or later of the
1330 MIPS32 architecture. New MIPS processors, starting with the Warrior
1331 family, are based on a MIPS32r6 processor. If you own an older
1332 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1333
1334 config CPU_MIPS64_R1
1335 bool "MIPS64 Release 1"
1336 depends on SYS_HAS_CPU_MIPS64_R1
1337 select CPU_HAS_PREFETCH
1338 select CPU_SUPPORTS_32BIT_KERNEL
1339 select CPU_SUPPORTS_64BIT_KERNEL
1340 select CPU_SUPPORTS_HIGHMEM
1341 select CPU_SUPPORTS_HUGEPAGES
1342 help
1343 Choose this option to build a kernel for release 1 or later of the
1344 MIPS64 architecture. Many modern embedded systems with a 64-bit
1345 MIPS processor are based on a MIPS64 processor. If you know the
1346 specific type of processor in your system, choose those that one
1347 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1348 Release 2 of the MIPS64 architecture is available since several
1349 years so chances are you even have a MIPS64 Release 2 processor
1350 in which case you should choose CPU_MIPS64_R2 instead for better
1351 performance.
1352
1353 config CPU_MIPS64_R2
1354 bool "MIPS64 Release 2"
1355 depends on SYS_HAS_CPU_MIPS64_R2
1356 select CPU_HAS_PREFETCH
1357 select CPU_SUPPORTS_32BIT_KERNEL
1358 select CPU_SUPPORTS_64BIT_KERNEL
1359 select CPU_SUPPORTS_HIGHMEM
1360 select CPU_SUPPORTS_HUGEPAGES
1361 select CPU_SUPPORTS_MSA
1362 help
1363 Choose this option to build a kernel for release 2 or later of the
1364 MIPS64 architecture. Many modern embedded systems with a 64-bit
1365 MIPS processor are based on a MIPS64 processor. If you know the
1366 specific type of processor in your system, choose those that one
1367 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1368
1369 config CPU_MIPS64_R6
1370 bool "MIPS64 Release 6 (EXPERIMENTAL)"
1371 depends on SYS_HAS_CPU_MIPS64_R6
1372 select CPU_HAS_PREFETCH
1373 select CPU_SUPPORTS_32BIT_KERNEL
1374 select CPU_SUPPORTS_64BIT_KERNEL
1375 select CPU_SUPPORTS_HIGHMEM
1376 select CPU_SUPPORTS_MSA
1377 select GENERIC_CSUM
1378 help
1379 Choose this option to build a kernel for release 6 or later of the
1380 MIPS64 architecture. New MIPS processors, starting with the Warrior
1381 family, are based on a MIPS64r6 processor. If you own an older
1382 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1383
1384 config CPU_R3000
1385 bool "R3000"
1386 depends on SYS_HAS_CPU_R3000
1387 select CPU_HAS_WB
1388 select CPU_SUPPORTS_32BIT_KERNEL
1389 select CPU_SUPPORTS_HIGHMEM
1390 help
1391 Please make sure to pick the right CPU type. Linux/MIPS is not
1392 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1393 *not* work on R4000 machines and vice versa. However, since most
1394 of the supported machines have an R4000 (or similar) CPU, R4x00
1395 might be a safe bet. If the resulting kernel does not work,
1396 try to recompile with R3000.
1397
1398 config CPU_TX39XX
1399 bool "R39XX"
1400 depends on SYS_HAS_CPU_TX39XX
1401 select CPU_SUPPORTS_32BIT_KERNEL
1402
1403 config CPU_VR41XX
1404 bool "R41xx"
1405 depends on SYS_HAS_CPU_VR41XX
1406 select CPU_SUPPORTS_32BIT_KERNEL
1407 select CPU_SUPPORTS_64BIT_KERNEL
1408 help
1409 The options selects support for the NEC VR4100 series of processors.
1410 Only choose this option if you have one of these processors as a
1411 kernel built with this option will not run on any other type of
1412 processor or vice versa.
1413
1414 config CPU_R4300
1415 bool "R4300"
1416 depends on SYS_HAS_CPU_R4300
1417 select CPU_SUPPORTS_32BIT_KERNEL
1418 select CPU_SUPPORTS_64BIT_KERNEL
1419 help
1420 MIPS Technologies R4300-series processors.
1421
1422 config CPU_R4X00
1423 bool "R4x00"
1424 depends on SYS_HAS_CPU_R4X00
1425 select CPU_SUPPORTS_32BIT_KERNEL
1426 select CPU_SUPPORTS_64BIT_KERNEL
1427 select CPU_SUPPORTS_HUGEPAGES
1428 help
1429 MIPS Technologies R4000-series processors other than 4300, including
1430 the R4000, R4400, R4600, and 4700.
1431
1432 config CPU_TX49XX
1433 bool "R49XX"
1434 depends on SYS_HAS_CPU_TX49XX
1435 select CPU_HAS_PREFETCH
1436 select CPU_SUPPORTS_32BIT_KERNEL
1437 select CPU_SUPPORTS_64BIT_KERNEL
1438 select CPU_SUPPORTS_HUGEPAGES
1439
1440 config CPU_R5000
1441 bool "R5000"
1442 depends on SYS_HAS_CPU_R5000
1443 select CPU_SUPPORTS_32BIT_KERNEL
1444 select CPU_SUPPORTS_64BIT_KERNEL
1445 select CPU_SUPPORTS_HUGEPAGES
1446 help
1447 MIPS Technologies R5000-series processors other than the Nevada.
1448
1449 config CPU_R5432
1450 bool "R5432"
1451 depends on SYS_HAS_CPU_R5432
1452 select CPU_SUPPORTS_32BIT_KERNEL
1453 select CPU_SUPPORTS_64BIT_KERNEL
1454 select CPU_SUPPORTS_HUGEPAGES
1455
1456 config CPU_R5500
1457 bool "R5500"
1458 depends on SYS_HAS_CPU_R5500
1459 select CPU_SUPPORTS_32BIT_KERNEL
1460 select CPU_SUPPORTS_64BIT_KERNEL
1461 select CPU_SUPPORTS_HUGEPAGES
1462 help
1463 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1464 instruction set.
1465
1466 config CPU_R6000
1467 bool "R6000"
1468 depends on SYS_HAS_CPU_R6000
1469 select CPU_SUPPORTS_32BIT_KERNEL
1470 help
1471 MIPS Technologies R6000 and R6000A series processors. Note these
1472 processors are extremely rare and the support for them is incomplete.
1473
1474 config CPU_NEVADA
1475 bool "RM52xx"
1476 depends on SYS_HAS_CPU_NEVADA
1477 select CPU_SUPPORTS_32BIT_KERNEL
1478 select CPU_SUPPORTS_64BIT_KERNEL
1479 select CPU_SUPPORTS_HUGEPAGES
1480 help
1481 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1482
1483 config CPU_R8000
1484 bool "R8000"
1485 depends on SYS_HAS_CPU_R8000
1486 select CPU_HAS_PREFETCH
1487 select CPU_SUPPORTS_64BIT_KERNEL
1488 help
1489 MIPS Technologies R8000 processors. Note these processors are
1490 uncommon and the support for them is incomplete.
1491
1492 config CPU_R10000
1493 bool "R10000"
1494 depends on SYS_HAS_CPU_R10000
1495 select CPU_HAS_PREFETCH
1496 select CPU_SUPPORTS_32BIT_KERNEL
1497 select CPU_SUPPORTS_64BIT_KERNEL
1498 select CPU_SUPPORTS_HIGHMEM
1499 select CPU_SUPPORTS_HUGEPAGES
1500 help
1501 MIPS Technologies R10000-series processors.
1502
1503 config CPU_RM7000
1504 bool "RM7000"
1505 depends on SYS_HAS_CPU_RM7000
1506 select CPU_HAS_PREFETCH
1507 select CPU_SUPPORTS_32BIT_KERNEL
1508 select CPU_SUPPORTS_64BIT_KERNEL
1509 select CPU_SUPPORTS_HIGHMEM
1510 select CPU_SUPPORTS_HUGEPAGES
1511
1512 config CPU_SB1
1513 bool "SB1"
1514 depends on SYS_HAS_CPU_SB1
1515 select CPU_SUPPORTS_32BIT_KERNEL
1516 select CPU_SUPPORTS_64BIT_KERNEL
1517 select CPU_SUPPORTS_HIGHMEM
1518 select CPU_SUPPORTS_HUGEPAGES
1519 select WEAK_ORDERING
1520
1521 config CPU_CAVIUM_OCTEON
1522 bool "Cavium Octeon processor"
1523 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1524 select CPU_HAS_PREFETCH
1525 select CPU_SUPPORTS_64BIT_KERNEL
1526 select WEAK_ORDERING
1527 select CPU_SUPPORTS_HIGHMEM
1528 select CPU_SUPPORTS_HUGEPAGES
1529 select USB_EHCI_BIG_ENDIAN_MMIO
1530 select MIPS_L1_CACHE_SHIFT_7
1531 help
1532 The Cavium Octeon processor is a highly integrated chip containing
1533 many ethernet hardware widgets for networking tasks. The processor
1534 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1535 Full details can be found at http://www.caviumnetworks.com.
1536
1537 config CPU_BMIPS
1538 bool "Broadcom BMIPS"
1539 depends on SYS_HAS_CPU_BMIPS
1540 select CPU_MIPS32
1541 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1542 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1543 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1544 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1545 select CPU_SUPPORTS_32BIT_KERNEL
1546 select DMA_NONCOHERENT
1547 select IRQ_CPU
1548 select SWAP_IO_SPACE
1549 select WEAK_ORDERING
1550 select CPU_SUPPORTS_HIGHMEM
1551 select CPU_HAS_PREFETCH
1552 help
1553 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1554
1555 config CPU_XLR
1556 bool "Netlogic XLR SoC"
1557 depends on SYS_HAS_CPU_XLR
1558 select CPU_SUPPORTS_32BIT_KERNEL
1559 select CPU_SUPPORTS_64BIT_KERNEL
1560 select CPU_SUPPORTS_HIGHMEM
1561 select CPU_SUPPORTS_HUGEPAGES
1562 select WEAK_ORDERING
1563 select WEAK_REORDERING_BEYOND_LLSC
1564 help
1565 Netlogic Microsystems XLR/XLS processors.
1566
1567 config CPU_XLP
1568 bool "Netlogic XLP SoC"
1569 depends on SYS_HAS_CPU_XLP
1570 select CPU_SUPPORTS_32BIT_KERNEL
1571 select CPU_SUPPORTS_64BIT_KERNEL
1572 select CPU_SUPPORTS_HIGHMEM
1573 select WEAK_ORDERING
1574 select WEAK_REORDERING_BEYOND_LLSC
1575 select CPU_HAS_PREFETCH
1576 select CPU_MIPSR2
1577 help
1578 Netlogic Microsystems XLP processors.
1579 endchoice
1580
1581 config CPU_MIPS32_3_5_FEATURES
1582 bool "MIPS32 Release 3.5 Features"
1583 depends on SYS_HAS_CPU_MIPS32_R3_5
1584 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1585 help
1586 Choose this option to build a kernel for release 2 or later of the
1587 MIPS32 architecture including features from the 3.5 release such as
1588 support for Enhanced Virtual Addressing (EVA).
1589
1590 config CPU_MIPS32_3_5_EVA
1591 bool "Enhanced Virtual Addressing (EVA)"
1592 depends on CPU_MIPS32_3_5_FEATURES
1593 select EVA
1594 default y
1595 help
1596 Choose this option if you want to enable the Enhanced Virtual
1597 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1598 One of its primary benefits is an increase in the maximum size
1599 of lowmem (up to 3GB). If unsure, say 'N' here.
1600
1601 config CPU_MIPS32_R5_FEATURES
1602 bool "MIPS32 Release 5 Features"
1603 depends on SYS_HAS_CPU_MIPS32_R5
1604 depends on CPU_MIPS32_R2
1605 help
1606 Choose this option to build a kernel for release 2 or later of the
1607 MIPS32 architecture including features from release 5 such as
1608 support for Extended Physical Addressing (XPA).
1609
1610 config CPU_MIPS32_R5_XPA
1611 bool "Extended Physical Addressing (XPA)"
1612 depends on CPU_MIPS32_R5_FEATURES
1613 depends on !EVA
1614 depends on !PAGE_SIZE_4KB
1615 depends on SYS_SUPPORTS_HIGHMEM
1616 select XPA
1617 select HIGHMEM
1618 select ARCH_PHYS_ADDR_T_64BIT
1619 default n
1620 help
1621 Choose this option if you want to enable the Extended Physical
1622 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1623 benefit is to increase physical addressing equal to or greater
1624 than 40 bits. Note that this has the side effect of turning on
1625 64-bit addressing which in turn makes the PTEs 64-bit in size.
1626 If unsure, say 'N' here.
1627
1628 if CPU_LOONGSON2F
1629 config CPU_NOP_WORKAROUNDS
1630 bool
1631
1632 config CPU_JUMP_WORKAROUNDS
1633 bool
1634
1635 config CPU_LOONGSON2F_WORKAROUNDS
1636 bool "Loongson 2F Workarounds"
1637 default y
1638 select CPU_NOP_WORKAROUNDS
1639 select CPU_JUMP_WORKAROUNDS
1640 help
1641 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1642 require workarounds. Without workarounds the system may hang
1643 unexpectedly. For more information please refer to the gas
1644 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1645
1646 Loongson 2F03 and later have fixed these issues and no workarounds
1647 are needed. The workarounds have no significant side effect on them
1648 but may decrease the performance of the system so this option should
1649 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1650 systems.
1651
1652 If unsure, please say Y.
1653 endif # CPU_LOONGSON2F
1654
1655 config SYS_SUPPORTS_ZBOOT
1656 bool
1657 select HAVE_KERNEL_GZIP
1658 select HAVE_KERNEL_BZIP2
1659 select HAVE_KERNEL_LZ4
1660 select HAVE_KERNEL_LZMA
1661 select HAVE_KERNEL_LZO
1662 select HAVE_KERNEL_XZ
1663
1664 config SYS_SUPPORTS_ZBOOT_UART16550
1665 bool
1666 select SYS_SUPPORTS_ZBOOT
1667
1668 config CPU_LOONGSON2
1669 bool
1670 select CPU_SUPPORTS_32BIT_KERNEL
1671 select CPU_SUPPORTS_64BIT_KERNEL
1672 select CPU_SUPPORTS_HIGHMEM
1673 select CPU_SUPPORTS_HUGEPAGES
1674
1675 config CPU_LOONGSON1
1676 bool
1677 select CPU_MIPS32
1678 select CPU_MIPSR2
1679 select CPU_HAS_PREFETCH
1680 select CPU_SUPPORTS_32BIT_KERNEL
1681 select CPU_SUPPORTS_HIGHMEM
1682 select CPU_SUPPORTS_CPUFREQ
1683
1684 config CPU_BMIPS32_3300
1685 select SMP_UP if SMP
1686 bool
1687
1688 config CPU_BMIPS4350
1689 bool
1690 select SYS_SUPPORTS_SMP
1691 select SYS_SUPPORTS_HOTPLUG_CPU
1692
1693 config CPU_BMIPS4380
1694 bool
1695 select MIPS_L1_CACHE_SHIFT_6
1696 select SYS_SUPPORTS_SMP
1697 select SYS_SUPPORTS_HOTPLUG_CPU
1698
1699 config CPU_BMIPS5000
1700 bool
1701 select MIPS_CPU_SCACHE
1702 select MIPS_L1_CACHE_SHIFT_7
1703 select SYS_SUPPORTS_SMP
1704 select SYS_SUPPORTS_HOTPLUG_CPU
1705
1706 config SYS_HAS_CPU_LOONGSON3
1707 bool
1708 select CPU_SUPPORTS_CPUFREQ
1709
1710 config SYS_HAS_CPU_LOONGSON2E
1711 bool
1712
1713 config SYS_HAS_CPU_LOONGSON2F
1714 bool
1715 select CPU_SUPPORTS_CPUFREQ
1716 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1717 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1718
1719 config SYS_HAS_CPU_LOONGSON1B
1720 bool
1721
1722 config SYS_HAS_CPU_MIPS32_R1
1723 bool
1724
1725 config SYS_HAS_CPU_MIPS32_R2
1726 bool
1727
1728 config SYS_HAS_CPU_MIPS32_R3_5
1729 bool
1730
1731 config SYS_HAS_CPU_MIPS32_R5
1732 bool
1733
1734 config SYS_HAS_CPU_MIPS32_R6
1735 bool
1736
1737 config SYS_HAS_CPU_MIPS64_R1
1738 bool
1739
1740 config SYS_HAS_CPU_MIPS64_R2
1741 bool
1742
1743 config SYS_HAS_CPU_MIPS64_R6
1744 bool
1745
1746 config SYS_HAS_CPU_R3000
1747 bool
1748
1749 config SYS_HAS_CPU_TX39XX
1750 bool
1751
1752 config SYS_HAS_CPU_VR41XX
1753 bool
1754
1755 config SYS_HAS_CPU_R4300
1756 bool
1757
1758 config SYS_HAS_CPU_R4X00
1759 bool
1760
1761 config SYS_HAS_CPU_TX49XX
1762 bool
1763
1764 config SYS_HAS_CPU_R5000
1765 bool
1766
1767 config SYS_HAS_CPU_R5432
1768 bool
1769
1770 config SYS_HAS_CPU_R5500
1771 bool
1772
1773 config SYS_HAS_CPU_R6000
1774 bool
1775
1776 config SYS_HAS_CPU_NEVADA
1777 bool
1778
1779 config SYS_HAS_CPU_R8000
1780 bool
1781
1782 config SYS_HAS_CPU_R10000
1783 bool
1784
1785 config SYS_HAS_CPU_RM7000
1786 bool
1787
1788 config SYS_HAS_CPU_SB1
1789 bool
1790
1791 config SYS_HAS_CPU_CAVIUM_OCTEON
1792 bool
1793
1794 config SYS_HAS_CPU_BMIPS
1795 bool
1796
1797 config SYS_HAS_CPU_BMIPS32_3300
1798 bool
1799 select SYS_HAS_CPU_BMIPS
1800
1801 config SYS_HAS_CPU_BMIPS4350
1802 bool
1803 select SYS_HAS_CPU_BMIPS
1804
1805 config SYS_HAS_CPU_BMIPS4380
1806 bool
1807 select SYS_HAS_CPU_BMIPS
1808
1809 config SYS_HAS_CPU_BMIPS5000
1810 bool
1811 select SYS_HAS_CPU_BMIPS
1812
1813 config SYS_HAS_CPU_XLR
1814 bool
1815
1816 config SYS_HAS_CPU_XLP
1817 bool
1818
1819 config MIPS_MALTA_PM
1820 depends on MIPS_MALTA
1821 depends on PCI
1822 bool
1823 default y
1824
1825 #
1826 # CPU may reorder R->R, R->W, W->R, W->W
1827 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1828 #
1829 config WEAK_ORDERING
1830 bool
1831
1832 #
1833 # CPU may reorder reads and writes beyond LL/SC
1834 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1835 #
1836 config WEAK_REORDERING_BEYOND_LLSC
1837 bool
1838 endmenu
1839
1840 #
1841 # These two indicate any level of the MIPS32 and MIPS64 architecture
1842 #
1843 config CPU_MIPS32
1844 bool
1845 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1846
1847 config CPU_MIPS64
1848 bool
1849 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1850
1851 #
1852 # These two indicate the revision of the architecture, either Release 1 or Release 2
1853 #
1854 config CPU_MIPSR1
1855 bool
1856 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1857
1858 config CPU_MIPSR2
1859 bool
1860 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1861 select MIPS_SPRAM
1862
1863 config CPU_MIPSR6
1864 bool
1865 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1866 select MIPS_SPRAM
1867
1868 config EVA
1869 bool
1870
1871 config XPA
1872 bool
1873
1874 config SYS_SUPPORTS_32BIT_KERNEL
1875 bool
1876 config SYS_SUPPORTS_64BIT_KERNEL
1877 bool
1878 config CPU_SUPPORTS_32BIT_KERNEL
1879 bool
1880 config CPU_SUPPORTS_64BIT_KERNEL
1881 bool
1882 config CPU_SUPPORTS_CPUFREQ
1883 bool
1884 config CPU_SUPPORTS_ADDRWINCFG
1885 bool
1886 config CPU_SUPPORTS_HUGEPAGES
1887 bool
1888 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1889 bool
1890 config MIPS_PGD_C0_CONTEXT
1891 bool
1892 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1893
1894 #
1895 # Set to y for ptrace access to watch registers.
1896 #
1897 config HARDWARE_WATCHPOINTS
1898 bool
1899 default y if CPU_MIPSR1 || CPU_MIPSR2
1900
1901 menu "Kernel type"
1902
1903 choice
1904 prompt "Kernel code model"
1905 help
1906 You should only select this option if you have a workload that
1907 actually benefits from 64-bit processing or if your machine has
1908 large memory. You will only be presented a single option in this
1909 menu if your system does not support both 32-bit and 64-bit kernels.
1910
1911 config 32BIT
1912 bool "32-bit kernel"
1913 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1914 select TRAD_SIGNALS
1915 help
1916 Select this option if you want to build a 32-bit kernel.
1917 config 64BIT
1918 bool "64-bit kernel"
1919 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1920 help
1921 Select this option if you want to build a 64-bit kernel.
1922
1923 endchoice
1924
1925 config KVM_GUEST
1926 bool "KVM Guest Kernel"
1927 depends on BROKEN_ON_SMP
1928 help
1929 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1930
1931 config KVM_GUEST_TIMER_FREQ
1932 int "Count/Compare Timer Frequency (MHz)"
1933 depends on KVM_GUEST
1934 default 100
1935 help
1936 Set this to non-zero if building a guest kernel for KVM to skip RTC
1937 emulation when determining guest CPU Frequency. Instead, the guest's
1938 timer frequency is specified directly.
1939
1940 choice
1941 prompt "Kernel page size"
1942 default PAGE_SIZE_4KB
1943
1944 config PAGE_SIZE_4KB
1945 bool "4kB"
1946 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
1947 help
1948 This option select the standard 4kB Linux page size. On some
1949 R3000-family processors this is the only available page size. Using
1950 4kB page size will minimize memory consumption and is therefore
1951 recommended for low memory systems.
1952
1953 config PAGE_SIZE_8KB
1954 bool "8kB"
1955 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1956 help
1957 Using 8kB page size will result in higher performance kernel at
1958 the price of higher memory consumption. This option is available
1959 only on R8000 and cnMIPS processors. Note that you will need a
1960 suitable Linux distribution to support this.
1961
1962 config PAGE_SIZE_16KB
1963 bool "16kB"
1964 depends on !CPU_R3000 && !CPU_TX39XX
1965 help
1966 Using 16kB page size will result in higher performance kernel at
1967 the price of higher memory consumption. This option is available on
1968 all non-R3000 family processors. Note that you will need a suitable
1969 Linux distribution to support this.
1970
1971 config PAGE_SIZE_32KB
1972 bool "32kB"
1973 depends on CPU_CAVIUM_OCTEON
1974 help
1975 Using 32kB page size will result in higher performance kernel at
1976 the price of higher memory consumption. This option is available
1977 only on cnMIPS cores. Note that you will need a suitable Linux
1978 distribution to support this.
1979
1980 config PAGE_SIZE_64KB
1981 bool "64kB"
1982 depends on !CPU_R3000 && !CPU_TX39XX
1983 help
1984 Using 64kB page size will result in higher performance kernel at
1985 the price of higher memory consumption. This option is available on
1986 all non-R3000 family processor. Not that at the time of this
1987 writing this option is still high experimental.
1988
1989 endchoice
1990
1991 config FORCE_MAX_ZONEORDER
1992 int "Maximum zone order"
1993 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
1994 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
1995 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
1996 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
1997 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
1998 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
1999 range 11 64
2000 default "11"
2001 help
2002 The kernel memory allocator divides physically contiguous memory
2003 blocks into "zones", where each zone is a power of two number of
2004 pages. This option selects the largest power of two that the kernel
2005 keeps in the memory allocator. If you need to allocate very large
2006 blocks of physically contiguous memory, then you may need to
2007 increase this value.
2008
2009 This config option is actually maximum order plus one. For example,
2010 a value of 11 means that the largest free memory block is 2^10 pages.
2011
2012 The page size is not necessarily 4KB. Keep this in mind
2013 when choosing a value for this option.
2014
2015 config BOARD_SCACHE
2016 bool
2017
2018 config IP22_CPU_SCACHE
2019 bool
2020 select BOARD_SCACHE
2021
2022 #
2023 # Support for a MIPS32 / MIPS64 style S-caches
2024 #
2025 config MIPS_CPU_SCACHE
2026 bool
2027 select BOARD_SCACHE
2028
2029 config R5000_CPU_SCACHE
2030 bool
2031 select BOARD_SCACHE
2032
2033 config RM7000_CPU_SCACHE
2034 bool
2035 select BOARD_SCACHE
2036
2037 config SIBYTE_DMA_PAGEOPS
2038 bool "Use DMA to clear/copy pages"
2039 depends on CPU_SB1
2040 help
2041 Instead of using the CPU to zero and copy pages, use a Data Mover
2042 channel. These DMA channels are otherwise unused by the standard
2043 SiByte Linux port. Seems to give a small performance benefit.
2044
2045 config CPU_HAS_PREFETCH
2046 bool
2047
2048 config CPU_GENERIC_DUMP_TLB
2049 bool
2050 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2051
2052 config CPU_R4K_FPU
2053 bool
2054 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2055
2056 config CPU_R4K_CACHE_TLB
2057 bool
2058 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2059
2060 config MIPS_MT_SMP
2061 bool "MIPS MT SMP support (1 TC on each available VPE)"
2062 depends on SYS_SUPPORTS_MULTITHREADING
2063 select CPU_MIPSR2_IRQ_VI
2064 select CPU_MIPSR2_IRQ_EI
2065 select SYNC_R4K
2066 select MIPS_GIC_IPI
2067 select MIPS_MT
2068 select SMP
2069 select SMP_UP
2070 select SYS_SUPPORTS_SMP
2071 select SYS_SUPPORTS_SCHED_SMT
2072 select MIPS_PERF_SHARED_TC_COUNTERS
2073 help
2074 This is a kernel model which is known as SMVP. This is supported
2075 on cores with the MT ASE and uses the available VPEs to implement
2076 virtual processors which supports SMP. This is equivalent to the
2077 Intel Hyperthreading feature. For further information go to
2078 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2079
2080 config MIPS_MT
2081 bool
2082
2083 config SCHED_SMT
2084 bool "SMT (multithreading) scheduler support"
2085 depends on SYS_SUPPORTS_SCHED_SMT
2086 default n
2087 help
2088 SMT scheduler support improves the CPU scheduler's decision making
2089 when dealing with MIPS MT enabled cores at a cost of slightly
2090 increased overhead in some places. If unsure say N here.
2091
2092 config SYS_SUPPORTS_SCHED_SMT
2093 bool
2094
2095 config SYS_SUPPORTS_MULTITHREADING
2096 bool
2097
2098 config MIPS_MT_FPAFF
2099 bool "Dynamic FPU affinity for FP-intensive threads"
2100 default y
2101 depends on MIPS_MT_SMP
2102
2103 config MIPSR2_TO_R6_EMULATOR
2104 bool "MIPS R2-to-R6 emulator"
2105 depends on CPU_MIPSR6 && !SMP
2106 default y
2107 help
2108 Choose this option if you want to run non-R6 MIPS userland code.
2109 Even if you say 'Y' here, the emulator will still be disabled by
2110 default. You can enable it using the 'mipsr2emu' kernel option.
2111 The only reason this is a build-time option is to save ~14K from the
2112 final kernel image.
2113 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2114 depends on SMP && CPU_MIPSR6
2115
2116 config MIPS_VPE_LOADER
2117 bool "VPE loader support."
2118 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2119 select CPU_MIPSR2_IRQ_VI
2120 select CPU_MIPSR2_IRQ_EI
2121 select MIPS_MT
2122 help
2123 Includes a loader for loading an elf relocatable object
2124 onto another VPE and running it.
2125
2126 config MIPS_VPE_LOADER_CMP
2127 bool
2128 default "y"
2129 depends on MIPS_VPE_LOADER && MIPS_CMP
2130
2131 config MIPS_VPE_LOADER_MT
2132 bool
2133 default "y"
2134 depends on MIPS_VPE_LOADER && !MIPS_CMP
2135
2136 config MIPS_VPE_LOADER_TOM
2137 bool "Load VPE program into memory hidden from linux"
2138 depends on MIPS_VPE_LOADER
2139 default y
2140 help
2141 The loader can use memory that is present but has been hidden from
2142 Linux using the kernel command line option "mem=xxMB". It's up to
2143 you to ensure the amount you put in the option and the space your
2144 program requires is less or equal to the amount physically present.
2145
2146 config MIPS_VPE_APSP_API
2147 bool "Enable support for AP/SP API (RTLX)"
2148 depends on MIPS_VPE_LOADER
2149 help
2150
2151 config MIPS_VPE_APSP_API_CMP
2152 bool
2153 default "y"
2154 depends on MIPS_VPE_APSP_API && MIPS_CMP
2155
2156 config MIPS_VPE_APSP_API_MT
2157 bool
2158 default "y"
2159 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2160
2161 config MIPS_CMP
2162 bool "MIPS CMP framework support (DEPRECATED)"
2163 depends on SYS_SUPPORTS_MIPS_CMP
2164 select MIPS_GIC_IPI
2165 select SMP
2166 select SYNC_R4K
2167 select SYS_SUPPORTS_SMP
2168 select WEAK_ORDERING
2169 default n
2170 help
2171 Select this if you are using a bootloader which implements the "CMP
2172 framework" protocol (ie. YAMON) and want your kernel to make use of
2173 its ability to start secondary CPUs.
2174
2175 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2176 instead of this.
2177
2178 config MIPS_CPS
2179 bool "MIPS Coherent Processing System support"
2180 depends on SYS_SUPPORTS_MIPS_CPS && !64BIT
2181 select MIPS_CM
2182 select MIPS_CPC
2183 select MIPS_CPS_PM if HOTPLUG_CPU
2184 select MIPS_GIC_IPI
2185 select SMP
2186 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2187 select SYS_SUPPORTS_HOTPLUG_CPU
2188 select SYS_SUPPORTS_SMP
2189 select WEAK_ORDERING
2190 help
2191 Select this if you wish to run an SMP kernel across multiple cores
2192 within a MIPS Coherent Processing System. When this option is
2193 enabled the kernel will probe for other cores and boot them with
2194 no external assistance. It is safe to enable this when hardware
2195 support is unavailable.
2196
2197 config MIPS_CPS_PM
2198 depends on MIPS_CPS
2199 select MIPS_CPC
2200 bool
2201
2202 config MIPS_GIC_IPI
2203 bool
2204
2205 config MIPS_CM
2206 bool
2207
2208 config MIPS_CPC
2209 bool
2210
2211 config SB1_PASS_1_WORKAROUNDS
2212 bool
2213 depends on CPU_SB1_PASS_1
2214 default y
2215
2216 config SB1_PASS_2_WORKAROUNDS
2217 bool
2218 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2219 default y
2220
2221 config SB1_PASS_2_1_WORKAROUNDS
2222 bool
2223 depends on CPU_SB1 && CPU_SB1_PASS_2
2224 default y
2225
2226
2227 config ARCH_PHYS_ADDR_T_64BIT
2228 bool
2229
2230 choice
2231 prompt "SmartMIPS or microMIPS ASE support"
2232
2233 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2234 bool "None"
2235 help
2236 Select this if you want neither microMIPS nor SmartMIPS support
2237
2238 config CPU_HAS_SMARTMIPS
2239 depends on SYS_SUPPORTS_SMARTMIPS
2240 bool "SmartMIPS"
2241 help
2242 SmartMIPS is a extension of the MIPS32 architecture aimed at
2243 increased security at both hardware and software level for
2244 smartcards. Enabling this option will allow proper use of the
2245 SmartMIPS instructions by Linux applications. However a kernel with
2246 this option will not work on a MIPS core without SmartMIPS core. If
2247 you don't know you probably don't have SmartMIPS and should say N
2248 here.
2249
2250 config CPU_MICROMIPS
2251 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2252 bool "microMIPS"
2253 help
2254 When this option is enabled the kernel will be built using the
2255 microMIPS ISA
2256
2257 endchoice
2258
2259 config CPU_HAS_MSA
2260 bool "Support for the MIPS SIMD Architecture (EXPERIMENTAL)"
2261 depends on CPU_SUPPORTS_MSA
2262 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2263 help
2264 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2265 and a set of SIMD instructions to operate on them. When this option
2266 is enabled the kernel will support allocating & switching MSA
2267 vector register contexts. If you know that your kernel will only be
2268 running on CPUs which do not support MSA or that your userland will
2269 not be making use of it then you may wish to say N here to reduce
2270 the size & complexity of your kernel.
2271
2272 If unsure, say Y.
2273
2274 config CPU_HAS_WB
2275 bool
2276
2277 config XKS01
2278 bool
2279
2280 #
2281 # Vectored interrupt mode is an R2 feature
2282 #
2283 config CPU_MIPSR2_IRQ_VI
2284 bool
2285
2286 #
2287 # Extended interrupt mode is an R2 feature
2288 #
2289 config CPU_MIPSR2_IRQ_EI
2290 bool
2291
2292 config CPU_HAS_SYNC
2293 bool
2294 depends on !CPU_R3000
2295 default y
2296
2297 #
2298 # CPU non-features
2299 #
2300 config CPU_DADDI_WORKAROUNDS
2301 bool
2302
2303 config CPU_R4000_WORKAROUNDS
2304 bool
2305 select CPU_R4400_WORKAROUNDS
2306
2307 config CPU_R4400_WORKAROUNDS
2308 bool
2309
2310 #
2311 # - Highmem only makes sense for the 32-bit kernel.
2312 # - The current highmem code will only work properly on physically indexed
2313 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2314 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2315 # moment we protect the user and offer the highmem option only on machines
2316 # where it's known to be safe. This will not offer highmem on a few systems
2317 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2318 # indexed CPUs but we're playing safe.
2319 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2320 # know they might have memory configurations that could make use of highmem
2321 # support.
2322 #
2323 config HIGHMEM
2324 bool "High Memory Support"
2325 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2326
2327 config CPU_SUPPORTS_HIGHMEM
2328 bool
2329
2330 config SYS_SUPPORTS_HIGHMEM
2331 bool
2332
2333 config SYS_SUPPORTS_SMARTMIPS
2334 bool
2335
2336 config SYS_SUPPORTS_MICROMIPS
2337 bool
2338
2339 config SYS_SUPPORTS_MIPS16
2340 bool
2341 help
2342 This option must be set if a kernel might be executed on a MIPS16-
2343 enabled CPU even if MIPS16 is not actually being used. In other
2344 words, it makes the kernel MIPS16-tolerant.
2345
2346 config CPU_SUPPORTS_MSA
2347 bool
2348
2349 config ARCH_FLATMEM_ENABLE
2350 def_bool y
2351 depends on !NUMA && !CPU_LOONGSON2
2352
2353 config ARCH_DISCONTIGMEM_ENABLE
2354 bool
2355 default y if SGI_IP27
2356 help
2357 Say Y to support efficient handling of discontiguous physical memory,
2358 for architectures which are either NUMA (Non-Uniform Memory Access)
2359 or have huge holes in the physical address space for other reasons.
2360 See <file:Documentation/vm/numa> for more.
2361
2362 config ARCH_SPARSEMEM_ENABLE
2363 bool
2364 select SPARSEMEM_STATIC
2365
2366 config NUMA
2367 bool "NUMA Support"
2368 depends on SYS_SUPPORTS_NUMA
2369 help
2370 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2371 Access). This option improves performance on systems with more
2372 than two nodes; on two node systems it is generally better to
2373 leave it disabled; on single node systems disable this option
2374 disabled.
2375
2376 config SYS_SUPPORTS_NUMA
2377 bool
2378
2379 config NODES_SHIFT
2380 int
2381 default "6"
2382 depends on NEED_MULTIPLE_NODES
2383
2384 config HW_PERF_EVENTS
2385 bool "Enable hardware performance counter support for perf events"
2386 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2387 default y
2388 help
2389 Enable hardware performance counter support for perf events. If
2390 disabled, perf events will use software events only.
2391
2392 source "mm/Kconfig"
2393
2394 config SMP
2395 bool "Multi-Processing support"
2396 depends on SYS_SUPPORTS_SMP
2397 help
2398 This enables support for systems with more than one CPU. If you have
2399 a system with only one CPU, say N. If you have a system with more
2400 than one CPU, say Y.
2401
2402 If you say N here, the kernel will run on uni- and multiprocessor
2403 machines, but will use only one CPU of a multiprocessor machine. If
2404 you say Y here, the kernel will run on many, but not all,
2405 uniprocessor machines. On a uniprocessor machine, the kernel
2406 will run faster if you say N here.
2407
2408 People using multiprocessor machines who say Y here should also say
2409 Y to "Enhanced Real Time Clock Support", below.
2410
2411 See also the SMP-HOWTO available at
2412 <http://www.tldp.org/docs.html#howto>.
2413
2414 If you don't know what to do here, say N.
2415
2416 config SMP_UP
2417 bool
2418
2419 config SYS_SUPPORTS_MIPS_CMP
2420 bool
2421
2422 config SYS_SUPPORTS_MIPS_CPS
2423 bool
2424
2425 config SYS_SUPPORTS_SMP
2426 bool
2427
2428 config NR_CPUS_DEFAULT_4
2429 bool
2430
2431 config NR_CPUS_DEFAULT_8
2432 bool
2433
2434 config NR_CPUS_DEFAULT_16
2435 bool
2436
2437 config NR_CPUS_DEFAULT_32
2438 bool
2439
2440 config NR_CPUS_DEFAULT_64
2441 bool
2442
2443 config NR_CPUS
2444 int "Maximum number of CPUs (2-256)"
2445 range 2 256
2446 depends on SMP
2447 default "4" if NR_CPUS_DEFAULT_4
2448 default "8" if NR_CPUS_DEFAULT_8
2449 default "16" if NR_CPUS_DEFAULT_16
2450 default "32" if NR_CPUS_DEFAULT_32
2451 default "64" if NR_CPUS_DEFAULT_64
2452 help
2453 This allows you to specify the maximum number of CPUs which this
2454 kernel will support. The maximum supported value is 32 for 32-bit
2455 kernel and 64 for 64-bit kernels; the minimum value which makes
2456 sense is 1 for Qemu (useful only for kernel debugging purposes)
2457 and 2 for all others.
2458
2459 This is purely to save memory - each supported CPU adds
2460 approximately eight kilobytes to the kernel image. For best
2461 performance should round up your number of processors to the next
2462 power of two.
2463
2464 config MIPS_PERF_SHARED_TC_COUNTERS
2465 bool
2466
2467 #
2468 # Timer Interrupt Frequency Configuration
2469 #
2470
2471 choice
2472 prompt "Timer frequency"
2473 default HZ_250
2474 help
2475 Allows the configuration of the timer frequency.
2476
2477 config HZ_48
2478 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2479
2480 config HZ_100
2481 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2482
2483 config HZ_128
2484 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2485
2486 config HZ_250
2487 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2488
2489 config HZ_256
2490 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2491
2492 config HZ_1000
2493 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2494
2495 config HZ_1024
2496 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2497
2498 endchoice
2499
2500 config SYS_SUPPORTS_48HZ
2501 bool
2502
2503 config SYS_SUPPORTS_100HZ
2504 bool
2505
2506 config SYS_SUPPORTS_128HZ
2507 bool
2508
2509 config SYS_SUPPORTS_250HZ
2510 bool
2511
2512 config SYS_SUPPORTS_256HZ
2513 bool
2514
2515 config SYS_SUPPORTS_1000HZ
2516 bool
2517
2518 config SYS_SUPPORTS_1024HZ
2519 bool
2520
2521 config SYS_SUPPORTS_ARBIT_HZ
2522 bool
2523 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2524 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2525 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2526 !SYS_SUPPORTS_1024HZ
2527
2528 config HZ
2529 int
2530 default 48 if HZ_48
2531 default 100 if HZ_100
2532 default 128 if HZ_128
2533 default 250 if HZ_250
2534 default 256 if HZ_256
2535 default 1000 if HZ_1000
2536 default 1024 if HZ_1024
2537
2538 source "kernel/Kconfig.preempt"
2539
2540 config KEXEC
2541 bool "Kexec system call"
2542 help
2543 kexec is a system call that implements the ability to shutdown your
2544 current kernel, and to start another kernel. It is like a reboot
2545 but it is independent of the system firmware. And like a reboot
2546 you can start any kernel with it, not just Linux.
2547
2548 The name comes from the similarity to the exec system call.
2549
2550 It is an ongoing process to be certain the hardware in a machine
2551 is properly shutdown, so do not be surprised if this code does not
2552 initially work for you. As of this writing the exact hardware
2553 interface is strongly in flux, so no good recommendation can be
2554 made.
2555
2556 config CRASH_DUMP
2557 bool "Kernel crash dumps"
2558 help
2559 Generate crash dump after being started by kexec.
2560 This should be normally only set in special crash dump kernels
2561 which are loaded in the main kernel with kexec-tools into
2562 a specially reserved region and then later executed after
2563 a crash by kdump/kexec. The crash dump kernel must be compiled
2564 to a memory address not used by the main kernel or firmware using
2565 PHYSICAL_START.
2566
2567 config PHYSICAL_START
2568 hex "Physical address where the kernel is loaded"
2569 default "0xffffffff84000000" if 64BIT
2570 default "0x84000000" if 32BIT
2571 depends on CRASH_DUMP
2572 help
2573 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2574 If you plan to use kernel for capturing the crash dump change
2575 this value to start of the reserved region (the "X" value as
2576 specified in the "crashkernel=YM@XM" command line boot parameter
2577 passed to the panic-ed kernel).
2578
2579 config SECCOMP
2580 bool "Enable seccomp to safely compute untrusted bytecode"
2581 depends on PROC_FS
2582 default y
2583 help
2584 This kernel feature is useful for number crunching applications
2585 that may need to compute untrusted bytecode during their
2586 execution. By using pipes or other transports made available to
2587 the process as file descriptors supporting the read/write
2588 syscalls, it's possible to isolate those applications in
2589 their own address space using seccomp. Once seccomp is
2590 enabled via /proc/<pid>/seccomp, it cannot be disabled
2591 and the task is only allowed to execute a few safe syscalls
2592 defined by each seccomp mode.
2593
2594 If unsure, say Y. Only embedded should say N here.
2595
2596 config MIPS_O32_FP64_SUPPORT
2597 bool "Support for O32 binaries using 64-bit FP (EXPERIMENTAL)"
2598 depends on 32BIT || MIPS32_O32
2599 help
2600 When this is enabled, the kernel will support use of 64-bit floating
2601 point registers with binaries using the O32 ABI along with the
2602 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2603 32-bit MIPS systems this support is at the cost of increasing the
2604 size and complexity of the compiled FPU emulator. Thus if you are
2605 running a MIPS32 system and know that none of your userland binaries
2606 will require 64-bit floating point, you may wish to reduce the size
2607 of your kernel & potentially improve FP emulation performance by
2608 saying N here.
2609
2610 Although binutils currently supports use of this flag the details
2611 concerning its effect upon the O32 ABI in userland are still being
2612 worked on. In order to avoid userland becoming dependant upon current
2613 behaviour before the details have been finalised, this option should
2614 be considered experimental and only enabled by those working upon
2615 said details.
2616
2617 If unsure, say N.
2618
2619 config USE_OF
2620 bool
2621 select OF
2622 select OF_EARLY_FLATTREE
2623 select IRQ_DOMAIN
2624
2625 config BUILTIN_DTB
2626 bool
2627
2628 endmenu
2629
2630 config LOCKDEP_SUPPORT
2631 bool
2632 default y
2633
2634 config STACKTRACE_SUPPORT
2635 bool
2636 default y
2637
2638 source "init/Kconfig"
2639
2640 source "kernel/Kconfig.freezer"
2641
2642 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2643
2644 config HW_HAS_EISA
2645 bool
2646 config HW_HAS_PCI
2647 bool
2648
2649 config PCI
2650 bool "Support for PCI controller"
2651 depends on HW_HAS_PCI
2652 select PCI_DOMAINS
2653 select NO_GENERIC_PCI_IOPORT_MAP
2654 help
2655 Find out whether you have a PCI motherboard. PCI is the name of a
2656 bus system, i.e. the way the CPU talks to the other stuff inside
2657 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2658 say Y, otherwise N.
2659
2660 config HT_PCI
2661 bool "Support for HT-linked PCI"
2662 default y
2663 depends on CPU_LOONGSON3
2664 select PCI
2665 select PCI_DOMAINS
2666 help
2667 Loongson family machines use Hyper-Transport bus for inter-core
2668 connection and device connection. The PCI bus is a subordinate
2669 linked at HT. Choose Y for Loongson-3 based machines.
2670
2671 config PCI_DOMAINS
2672 bool
2673
2674 source "drivers/pci/Kconfig"
2675
2676 source "drivers/pci/pcie/Kconfig"
2677
2678 #
2679 # ISA support is now enabled via select. Too many systems still have the one
2680 # or other ISA chip on the board that users don't know about so don't expect
2681 # users to choose the right thing ...
2682 #
2683 config ISA
2684 bool
2685
2686 config EISA
2687 bool "EISA support"
2688 depends on HW_HAS_EISA
2689 select ISA
2690 select GENERIC_ISA_DMA
2691 ---help---
2692 The Extended Industry Standard Architecture (EISA) bus was
2693 developed as an open alternative to the IBM MicroChannel bus.
2694
2695 The EISA bus provided some of the features of the IBM MicroChannel
2696 bus while maintaining backward compatibility with cards made for
2697 the older ISA bus. The EISA bus saw limited use between 1988 and
2698 1995 when it was made obsolete by the PCI bus.
2699
2700 Say Y here if you are building a kernel for an EISA-based machine.
2701
2702 Otherwise, say N.
2703
2704 source "drivers/eisa/Kconfig"
2705
2706 config TC
2707 bool "TURBOchannel support"
2708 depends on MACH_DECSTATION
2709 help
2710 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2711 processors. TURBOchannel programming specifications are available
2712 at:
2713 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2714 and:
2715 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2716 Linux driver support status is documented at:
2717 <http://www.linux-mips.org/wiki/DECstation>
2718
2719 config MMU
2720 bool
2721 default y
2722
2723 config I8253
2724 bool
2725 select CLKSRC_I8253
2726 select CLKEVT_I8253
2727 select MIPS_EXTERNAL_TIMER
2728
2729 config ZONE_DMA
2730 bool
2731
2732 config ZONE_DMA32
2733 bool
2734
2735 source "drivers/pcmcia/Kconfig"
2736
2737 source "drivers/pci/hotplug/Kconfig"
2738
2739 config RAPIDIO
2740 tristate "RapidIO support"
2741 depends on PCI
2742 default n
2743 help
2744 If you say Y here, the kernel will include drivers and
2745 infrastructure code to support RapidIO interconnect devices.
2746
2747 source "drivers/rapidio/Kconfig"
2748
2749 endmenu
2750
2751 menu "Executable file formats"
2752
2753 source "fs/Kconfig.binfmt"
2754
2755 config TRAD_SIGNALS
2756 bool
2757
2758 config MIPS32_COMPAT
2759 bool
2760
2761 config COMPAT
2762 bool
2763
2764 config SYSVIPC_COMPAT
2765 bool
2766
2767 config MIPS32_O32
2768 bool "Kernel support for o32 binaries"
2769 depends on 64BIT
2770 select ARCH_WANT_OLD_COMPAT_IPC
2771 select COMPAT
2772 select MIPS32_COMPAT
2773 select SYSVIPC_COMPAT if SYSVIPC
2774 help
2775 Select this option if you want to run o32 binaries. These are pure
2776 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2777 existing binaries are in this format.
2778
2779 If unsure, say Y.
2780
2781 config MIPS32_N32
2782 bool "Kernel support for n32 binaries"
2783 depends on 64BIT
2784 select COMPAT
2785 select MIPS32_COMPAT
2786 select SYSVIPC_COMPAT if SYSVIPC
2787 help
2788 Select this option if you want to run n32 binaries. These are
2789 64-bit binaries using 32-bit quantities for addressing and certain
2790 data that would normally be 64-bit. They are used in special
2791 cases.
2792
2793 If unsure, say N.
2794
2795 config BINFMT_ELF32
2796 bool
2797 default y if MIPS32_O32 || MIPS32_N32
2798
2799 endmenu
2800
2801 menu "Power management options"
2802
2803 config ARCH_HIBERNATION_POSSIBLE
2804 def_bool y
2805 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2806
2807 config ARCH_SUSPEND_POSSIBLE
2808 def_bool y
2809 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2810
2811 source "kernel/power/Kconfig"
2812
2813 endmenu
2814
2815 config MIPS_EXTERNAL_TIMER
2816 bool
2817
2818 menu "CPU Power Management"
2819
2820 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2821 source "drivers/cpufreq/Kconfig"
2822 endif
2823
2824 source "drivers/cpuidle/Kconfig"
2825
2826 endmenu
2827
2828 source "net/Kconfig"
2829
2830 source "drivers/Kconfig"
2831
2832 source "drivers/firmware/Kconfig"
2833
2834 source "fs/Kconfig"
2835
2836 source "arch/mips/Kconfig.debug"
2837
2838 source "security/Kconfig"
2839
2840 source "crypto/Kconfig"
2841
2842 source "lib/Kconfig"
2843
2844 source "arch/mips/kvm/Kconfig"
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