Merge tag 'efi-urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/mfleming...
[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 help
1249 The Loongson 3 processor implements the MIPS64R2 instruction
1250 set with many extensions.
1251
1252 config CPU_LOONGSON2E
1253 bool "Loongson 2E"
1254 depends on SYS_HAS_CPU_LOONGSON2E
1255 select CPU_LOONGSON2
1256 help
1257 The Loongson 2E processor implements the MIPS III instruction set
1258 with many extensions.
1259
1260 It has an internal FPGA northbridge, which is compatible to
1261 bonito64.
1262
1263 config CPU_LOONGSON2F
1264 bool "Loongson 2F"
1265 depends on SYS_HAS_CPU_LOONGSON2F
1266 select CPU_LOONGSON2
1267 select ARCH_REQUIRE_GPIOLIB
1268 help
1269 The Loongson 2F processor implements the MIPS III instruction set
1270 with many extensions.
1271
1272 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1273 have a similar programming interface with FPGA northbridge used in
1274 Loongson2E.
1275
1276 config CPU_LOONGSON1B
1277 bool "Loongson 1B"
1278 depends on SYS_HAS_CPU_LOONGSON1B
1279 select CPU_LOONGSON1
1280 help
1281 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1282 release 2 instruction set.
1283
1284 config CPU_MIPS32_R1
1285 bool "MIPS32 Release 1"
1286 depends on SYS_HAS_CPU_MIPS32_R1
1287 select CPU_HAS_PREFETCH
1288 select CPU_SUPPORTS_32BIT_KERNEL
1289 select CPU_SUPPORTS_HIGHMEM
1290 help
1291 Choose this option to build a kernel for release 1 or later of the
1292 MIPS32 architecture. Most modern embedded systems with a 32-bit
1293 MIPS processor are based on a MIPS32 processor. If you know the
1294 specific type of processor in your system, choose those that one
1295 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1296 Release 2 of the MIPS32 architecture is available since several
1297 years so chances are you even have a MIPS32 Release 2 processor
1298 in which case you should choose CPU_MIPS32_R2 instead for better
1299 performance.
1300
1301 config CPU_MIPS32_R2
1302 bool "MIPS32 Release 2"
1303 depends on SYS_HAS_CPU_MIPS32_R2
1304 select CPU_HAS_PREFETCH
1305 select CPU_SUPPORTS_32BIT_KERNEL
1306 select CPU_SUPPORTS_HIGHMEM
1307 select CPU_SUPPORTS_MSA
1308 select HAVE_KVM
1309 help
1310 Choose this option to build a kernel for release 2 or later of the
1311 MIPS32 architecture. Most modern embedded systems with a 32-bit
1312 MIPS processor are based on a MIPS32 processor. If you know the
1313 specific type of processor in your system, choose those that one
1314 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1315
1316 config CPU_MIPS32_R6
1317 bool "MIPS32 Release 6 (EXPERIMENTAL)"
1318 depends on SYS_HAS_CPU_MIPS32_R6
1319 select CPU_HAS_PREFETCH
1320 select CPU_SUPPORTS_32BIT_KERNEL
1321 select CPU_SUPPORTS_HIGHMEM
1322 select CPU_SUPPORTS_MSA
1323 select GENERIC_CSUM
1324 select HAVE_KVM
1325 select MIPS_O32_FP64_SUPPORT
1326 help
1327 Choose this option to build a kernel for release 6 or later of the
1328 MIPS32 architecture. New MIPS processors, starting with the Warrior
1329 family, are based on a MIPS32r6 processor. If you own an older
1330 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1331
1332 config CPU_MIPS64_R1
1333 bool "MIPS64 Release 1"
1334 depends on SYS_HAS_CPU_MIPS64_R1
1335 select CPU_HAS_PREFETCH
1336 select CPU_SUPPORTS_32BIT_KERNEL
1337 select CPU_SUPPORTS_64BIT_KERNEL
1338 select CPU_SUPPORTS_HIGHMEM
1339 select CPU_SUPPORTS_HUGEPAGES
1340 help
1341 Choose this option to build a kernel for release 1 or later of the
1342 MIPS64 architecture. Many modern embedded systems with a 64-bit
1343 MIPS processor are based on a MIPS64 processor. If you know the
1344 specific type of processor in your system, choose those that one
1345 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1346 Release 2 of the MIPS64 architecture is available since several
1347 years so chances are you even have a MIPS64 Release 2 processor
1348 in which case you should choose CPU_MIPS64_R2 instead for better
1349 performance.
1350
1351 config CPU_MIPS64_R2
1352 bool "MIPS64 Release 2"
1353 depends on SYS_HAS_CPU_MIPS64_R2
1354 select CPU_HAS_PREFETCH
1355 select CPU_SUPPORTS_32BIT_KERNEL
1356 select CPU_SUPPORTS_64BIT_KERNEL
1357 select CPU_SUPPORTS_HIGHMEM
1358 select CPU_SUPPORTS_HUGEPAGES
1359 select CPU_SUPPORTS_MSA
1360 help
1361 Choose this option to build a kernel for release 2 or later of the
1362 MIPS64 architecture. Many modern embedded systems with a 64-bit
1363 MIPS processor are based on a MIPS64 processor. If you know the
1364 specific type of processor in your system, choose those that one
1365 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1366
1367 config CPU_MIPS64_R6
1368 bool "MIPS64 Release 6 (EXPERIMENTAL)"
1369 depends on SYS_HAS_CPU_MIPS64_R6
1370 select CPU_HAS_PREFETCH
1371 select CPU_SUPPORTS_32BIT_KERNEL
1372 select CPU_SUPPORTS_64BIT_KERNEL
1373 select CPU_SUPPORTS_HIGHMEM
1374 select CPU_SUPPORTS_MSA
1375 select GENERIC_CSUM
1376 help
1377 Choose this option to build a kernel for release 6 or later of the
1378 MIPS64 architecture. New MIPS processors, starting with the Warrior
1379 family, are based on a MIPS64r6 processor. If you own an older
1380 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1381
1382 config CPU_R3000
1383 bool "R3000"
1384 depends on SYS_HAS_CPU_R3000
1385 select CPU_HAS_WB
1386 select CPU_SUPPORTS_32BIT_KERNEL
1387 select CPU_SUPPORTS_HIGHMEM
1388 help
1389 Please make sure to pick the right CPU type. Linux/MIPS is not
1390 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1391 *not* work on R4000 machines and vice versa. However, since most
1392 of the supported machines have an R4000 (or similar) CPU, R4x00
1393 might be a safe bet. If the resulting kernel does not work,
1394 try to recompile with R3000.
1395
1396 config CPU_TX39XX
1397 bool "R39XX"
1398 depends on SYS_HAS_CPU_TX39XX
1399 select CPU_SUPPORTS_32BIT_KERNEL
1400
1401 config CPU_VR41XX
1402 bool "R41xx"
1403 depends on SYS_HAS_CPU_VR41XX
1404 select CPU_SUPPORTS_32BIT_KERNEL
1405 select CPU_SUPPORTS_64BIT_KERNEL
1406 help
1407 The options selects support for the NEC VR4100 series of processors.
1408 Only choose this option if you have one of these processors as a
1409 kernel built with this option will not run on any other type of
1410 processor or vice versa.
1411
1412 config CPU_R4300
1413 bool "R4300"
1414 depends on SYS_HAS_CPU_R4300
1415 select CPU_SUPPORTS_32BIT_KERNEL
1416 select CPU_SUPPORTS_64BIT_KERNEL
1417 help
1418 MIPS Technologies R4300-series processors.
1419
1420 config CPU_R4X00
1421 bool "R4x00"
1422 depends on SYS_HAS_CPU_R4X00
1423 select CPU_SUPPORTS_32BIT_KERNEL
1424 select CPU_SUPPORTS_64BIT_KERNEL
1425 select CPU_SUPPORTS_HUGEPAGES
1426 help
1427 MIPS Technologies R4000-series processors other than 4300, including
1428 the R4000, R4400, R4600, and 4700.
1429
1430 config CPU_TX49XX
1431 bool "R49XX"
1432 depends on SYS_HAS_CPU_TX49XX
1433 select CPU_HAS_PREFETCH
1434 select CPU_SUPPORTS_32BIT_KERNEL
1435 select CPU_SUPPORTS_64BIT_KERNEL
1436 select CPU_SUPPORTS_HUGEPAGES
1437
1438 config CPU_R5000
1439 bool "R5000"
1440 depends on SYS_HAS_CPU_R5000
1441 select CPU_SUPPORTS_32BIT_KERNEL
1442 select CPU_SUPPORTS_64BIT_KERNEL
1443 select CPU_SUPPORTS_HUGEPAGES
1444 help
1445 MIPS Technologies R5000-series processors other than the Nevada.
1446
1447 config CPU_R5432
1448 bool "R5432"
1449 depends on SYS_HAS_CPU_R5432
1450 select CPU_SUPPORTS_32BIT_KERNEL
1451 select CPU_SUPPORTS_64BIT_KERNEL
1452 select CPU_SUPPORTS_HUGEPAGES
1453
1454 config CPU_R5500
1455 bool "R5500"
1456 depends on SYS_HAS_CPU_R5500
1457 select CPU_SUPPORTS_32BIT_KERNEL
1458 select CPU_SUPPORTS_64BIT_KERNEL
1459 select CPU_SUPPORTS_HUGEPAGES
1460 help
1461 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1462 instruction set.
1463
1464 config CPU_R6000
1465 bool "R6000"
1466 depends on SYS_HAS_CPU_R6000
1467 select CPU_SUPPORTS_32BIT_KERNEL
1468 help
1469 MIPS Technologies R6000 and R6000A series processors. Note these
1470 processors are extremely rare and the support for them is incomplete.
1471
1472 config CPU_NEVADA
1473 bool "RM52xx"
1474 depends on SYS_HAS_CPU_NEVADA
1475 select CPU_SUPPORTS_32BIT_KERNEL
1476 select CPU_SUPPORTS_64BIT_KERNEL
1477 select CPU_SUPPORTS_HUGEPAGES
1478 help
1479 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1480
1481 config CPU_R8000
1482 bool "R8000"
1483 depends on SYS_HAS_CPU_R8000
1484 select CPU_HAS_PREFETCH
1485 select CPU_SUPPORTS_64BIT_KERNEL
1486 help
1487 MIPS Technologies R8000 processors. Note these processors are
1488 uncommon and the support for them is incomplete.
1489
1490 config CPU_R10000
1491 bool "R10000"
1492 depends on SYS_HAS_CPU_R10000
1493 select CPU_HAS_PREFETCH
1494 select CPU_SUPPORTS_32BIT_KERNEL
1495 select CPU_SUPPORTS_64BIT_KERNEL
1496 select CPU_SUPPORTS_HIGHMEM
1497 select CPU_SUPPORTS_HUGEPAGES
1498 help
1499 MIPS Technologies R10000-series processors.
1500
1501 config CPU_RM7000
1502 bool "RM7000"
1503 depends on SYS_HAS_CPU_RM7000
1504 select CPU_HAS_PREFETCH
1505 select CPU_SUPPORTS_32BIT_KERNEL
1506 select CPU_SUPPORTS_64BIT_KERNEL
1507 select CPU_SUPPORTS_HIGHMEM
1508 select CPU_SUPPORTS_HUGEPAGES
1509
1510 config CPU_SB1
1511 bool "SB1"
1512 depends on SYS_HAS_CPU_SB1
1513 select CPU_SUPPORTS_32BIT_KERNEL
1514 select CPU_SUPPORTS_64BIT_KERNEL
1515 select CPU_SUPPORTS_HIGHMEM
1516 select CPU_SUPPORTS_HUGEPAGES
1517 select WEAK_ORDERING
1518
1519 config CPU_CAVIUM_OCTEON
1520 bool "Cavium Octeon processor"
1521 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1522 select CPU_HAS_PREFETCH
1523 select CPU_SUPPORTS_64BIT_KERNEL
1524 select WEAK_ORDERING
1525 select CPU_SUPPORTS_HIGHMEM
1526 select CPU_SUPPORTS_HUGEPAGES
1527 select USB_EHCI_BIG_ENDIAN_MMIO
1528 select MIPS_L1_CACHE_SHIFT_7
1529 help
1530 The Cavium Octeon processor is a highly integrated chip containing
1531 many ethernet hardware widgets for networking tasks. The processor
1532 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1533 Full details can be found at http://www.caviumnetworks.com.
1534
1535 config CPU_BMIPS
1536 bool "Broadcom BMIPS"
1537 depends on SYS_HAS_CPU_BMIPS
1538 select CPU_MIPS32
1539 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1540 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1541 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1542 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1543 select CPU_SUPPORTS_32BIT_KERNEL
1544 select DMA_NONCOHERENT
1545 select IRQ_CPU
1546 select SWAP_IO_SPACE
1547 select WEAK_ORDERING
1548 select CPU_SUPPORTS_HIGHMEM
1549 select CPU_HAS_PREFETCH
1550 help
1551 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1552
1553 config CPU_XLR
1554 bool "Netlogic XLR SoC"
1555 depends on SYS_HAS_CPU_XLR
1556 select CPU_SUPPORTS_32BIT_KERNEL
1557 select CPU_SUPPORTS_64BIT_KERNEL
1558 select CPU_SUPPORTS_HIGHMEM
1559 select CPU_SUPPORTS_HUGEPAGES
1560 select WEAK_ORDERING
1561 select WEAK_REORDERING_BEYOND_LLSC
1562 help
1563 Netlogic Microsystems XLR/XLS processors.
1564
1565 config CPU_XLP
1566 bool "Netlogic XLP SoC"
1567 depends on SYS_HAS_CPU_XLP
1568 select CPU_SUPPORTS_32BIT_KERNEL
1569 select CPU_SUPPORTS_64BIT_KERNEL
1570 select CPU_SUPPORTS_HIGHMEM
1571 select WEAK_ORDERING
1572 select WEAK_REORDERING_BEYOND_LLSC
1573 select CPU_HAS_PREFETCH
1574 select CPU_MIPSR2
1575 help
1576 Netlogic Microsystems XLP processors.
1577 endchoice
1578
1579 config CPU_MIPS32_3_5_FEATURES
1580 bool "MIPS32 Release 3.5 Features"
1581 depends on SYS_HAS_CPU_MIPS32_R3_5
1582 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1583 help
1584 Choose this option to build a kernel for release 2 or later of the
1585 MIPS32 architecture including features from the 3.5 release such as
1586 support for Enhanced Virtual Addressing (EVA).
1587
1588 config CPU_MIPS32_3_5_EVA
1589 bool "Enhanced Virtual Addressing (EVA)"
1590 depends on CPU_MIPS32_3_5_FEATURES
1591 select EVA
1592 default y
1593 help
1594 Choose this option if you want to enable the Enhanced Virtual
1595 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1596 One of its primary benefits is an increase in the maximum size
1597 of lowmem (up to 3GB). If unsure, say 'N' here.
1598
1599 if CPU_LOONGSON2F
1600 config CPU_NOP_WORKAROUNDS
1601 bool
1602
1603 config CPU_JUMP_WORKAROUNDS
1604 bool
1605
1606 config CPU_LOONGSON2F_WORKAROUNDS
1607 bool "Loongson 2F Workarounds"
1608 default y
1609 select CPU_NOP_WORKAROUNDS
1610 select CPU_JUMP_WORKAROUNDS
1611 help
1612 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1613 require workarounds. Without workarounds the system may hang
1614 unexpectedly. For more information please refer to the gas
1615 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1616
1617 Loongson 2F03 and later have fixed these issues and no workarounds
1618 are needed. The workarounds have no significant side effect on them
1619 but may decrease the performance of the system so this option should
1620 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1621 systems.
1622
1623 If unsure, please say Y.
1624 endif # CPU_LOONGSON2F
1625
1626 config SYS_SUPPORTS_ZBOOT
1627 bool
1628 select HAVE_KERNEL_GZIP
1629 select HAVE_KERNEL_BZIP2
1630 select HAVE_KERNEL_LZ4
1631 select HAVE_KERNEL_LZMA
1632 select HAVE_KERNEL_LZO
1633 select HAVE_KERNEL_XZ
1634
1635 config SYS_SUPPORTS_ZBOOT_UART16550
1636 bool
1637 select SYS_SUPPORTS_ZBOOT
1638
1639 config CPU_LOONGSON2
1640 bool
1641 select CPU_SUPPORTS_32BIT_KERNEL
1642 select CPU_SUPPORTS_64BIT_KERNEL
1643 select CPU_SUPPORTS_HIGHMEM
1644 select CPU_SUPPORTS_HUGEPAGES
1645
1646 config CPU_LOONGSON1
1647 bool
1648 select CPU_MIPS32
1649 select CPU_MIPSR2
1650 select CPU_HAS_PREFETCH
1651 select CPU_SUPPORTS_32BIT_KERNEL
1652 select CPU_SUPPORTS_HIGHMEM
1653 select CPU_SUPPORTS_CPUFREQ
1654
1655 config CPU_BMIPS32_3300
1656 select SMP_UP if SMP
1657 bool
1658
1659 config CPU_BMIPS4350
1660 bool
1661 select SYS_SUPPORTS_SMP
1662 select SYS_SUPPORTS_HOTPLUG_CPU
1663
1664 config CPU_BMIPS4380
1665 bool
1666 select MIPS_L1_CACHE_SHIFT_6
1667 select SYS_SUPPORTS_SMP
1668 select SYS_SUPPORTS_HOTPLUG_CPU
1669
1670 config CPU_BMIPS5000
1671 bool
1672 select MIPS_CPU_SCACHE
1673 select MIPS_L1_CACHE_SHIFT_7
1674 select SYS_SUPPORTS_SMP
1675 select SYS_SUPPORTS_HOTPLUG_CPU
1676
1677 config SYS_HAS_CPU_LOONGSON3
1678 bool
1679 select CPU_SUPPORTS_CPUFREQ
1680
1681 config SYS_HAS_CPU_LOONGSON2E
1682 bool
1683
1684 config SYS_HAS_CPU_LOONGSON2F
1685 bool
1686 select CPU_SUPPORTS_CPUFREQ
1687 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1688 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1689
1690 config SYS_HAS_CPU_LOONGSON1B
1691 bool
1692
1693 config SYS_HAS_CPU_MIPS32_R1
1694 bool
1695
1696 config SYS_HAS_CPU_MIPS32_R2
1697 bool
1698
1699 config SYS_HAS_CPU_MIPS32_R3_5
1700 bool
1701
1702 config SYS_HAS_CPU_MIPS32_R6
1703 bool
1704
1705 config SYS_HAS_CPU_MIPS64_R1
1706 bool
1707
1708 config SYS_HAS_CPU_MIPS64_R2
1709 bool
1710
1711 config SYS_HAS_CPU_MIPS64_R6
1712 bool
1713
1714 config SYS_HAS_CPU_R3000
1715 bool
1716
1717 config SYS_HAS_CPU_TX39XX
1718 bool
1719
1720 config SYS_HAS_CPU_VR41XX
1721 bool
1722
1723 config SYS_HAS_CPU_R4300
1724 bool
1725
1726 config SYS_HAS_CPU_R4X00
1727 bool
1728
1729 config SYS_HAS_CPU_TX49XX
1730 bool
1731
1732 config SYS_HAS_CPU_R5000
1733 bool
1734
1735 config SYS_HAS_CPU_R5432
1736 bool
1737
1738 config SYS_HAS_CPU_R5500
1739 bool
1740
1741 config SYS_HAS_CPU_R6000
1742 bool
1743
1744 config SYS_HAS_CPU_NEVADA
1745 bool
1746
1747 config SYS_HAS_CPU_R8000
1748 bool
1749
1750 config SYS_HAS_CPU_R10000
1751 bool
1752
1753 config SYS_HAS_CPU_RM7000
1754 bool
1755
1756 config SYS_HAS_CPU_SB1
1757 bool
1758
1759 config SYS_HAS_CPU_CAVIUM_OCTEON
1760 bool
1761
1762 config SYS_HAS_CPU_BMIPS
1763 bool
1764
1765 config SYS_HAS_CPU_BMIPS32_3300
1766 bool
1767 select SYS_HAS_CPU_BMIPS
1768
1769 config SYS_HAS_CPU_BMIPS4350
1770 bool
1771 select SYS_HAS_CPU_BMIPS
1772
1773 config SYS_HAS_CPU_BMIPS4380
1774 bool
1775 select SYS_HAS_CPU_BMIPS
1776
1777 config SYS_HAS_CPU_BMIPS5000
1778 bool
1779 select SYS_HAS_CPU_BMIPS
1780
1781 config SYS_HAS_CPU_XLR
1782 bool
1783
1784 config SYS_HAS_CPU_XLP
1785 bool
1786
1787 config MIPS_MALTA_PM
1788 depends on MIPS_MALTA
1789 depends on PCI
1790 bool
1791 default y
1792
1793 #
1794 # CPU may reorder R->R, R->W, W->R, W->W
1795 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1796 #
1797 config WEAK_ORDERING
1798 bool
1799
1800 #
1801 # CPU may reorder reads and writes beyond LL/SC
1802 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1803 #
1804 config WEAK_REORDERING_BEYOND_LLSC
1805 bool
1806 endmenu
1807
1808 #
1809 # These two indicate any level of the MIPS32 and MIPS64 architecture
1810 #
1811 config CPU_MIPS32
1812 bool
1813 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1814
1815 config CPU_MIPS64
1816 bool
1817 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1818
1819 #
1820 # These two indicate the revision of the architecture, either Release 1 or Release 2
1821 #
1822 config CPU_MIPSR1
1823 bool
1824 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1825
1826 config CPU_MIPSR2
1827 bool
1828 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1829 select MIPS_SPRAM
1830
1831 config CPU_MIPSR6
1832 bool
1833 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1834 select MIPS_SPRAM
1835
1836 config EVA
1837 bool
1838
1839 config SYS_SUPPORTS_32BIT_KERNEL
1840 bool
1841 config SYS_SUPPORTS_64BIT_KERNEL
1842 bool
1843 config CPU_SUPPORTS_32BIT_KERNEL
1844 bool
1845 config CPU_SUPPORTS_64BIT_KERNEL
1846 bool
1847 config CPU_SUPPORTS_CPUFREQ
1848 bool
1849 config CPU_SUPPORTS_ADDRWINCFG
1850 bool
1851 config CPU_SUPPORTS_HUGEPAGES
1852 bool
1853 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1854 bool
1855 config MIPS_PGD_C0_CONTEXT
1856 bool
1857 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1858
1859 #
1860 # Set to y for ptrace access to watch registers.
1861 #
1862 config HARDWARE_WATCHPOINTS
1863 bool
1864 default y if CPU_MIPSR1 || CPU_MIPSR2
1865
1866 menu "Kernel type"
1867
1868 choice
1869 prompt "Kernel code model"
1870 help
1871 You should only select this option if you have a workload that
1872 actually benefits from 64-bit processing or if your machine has
1873 large memory. You will only be presented a single option in this
1874 menu if your system does not support both 32-bit and 64-bit kernels.
1875
1876 config 32BIT
1877 bool "32-bit kernel"
1878 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1879 select TRAD_SIGNALS
1880 help
1881 Select this option if you want to build a 32-bit kernel.
1882 config 64BIT
1883 bool "64-bit kernel"
1884 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1885 help
1886 Select this option if you want to build a 64-bit kernel.
1887
1888 endchoice
1889
1890 config KVM_GUEST
1891 bool "KVM Guest Kernel"
1892 depends on BROKEN_ON_SMP
1893 help
1894 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1895
1896 config KVM_GUEST_TIMER_FREQ
1897 int "Count/Compare Timer Frequency (MHz)"
1898 depends on KVM_GUEST
1899 default 100
1900 help
1901 Set this to non-zero if building a guest kernel for KVM to skip RTC
1902 emulation when determining guest CPU Frequency. Instead, the guest's
1903 timer frequency is specified directly.
1904
1905 choice
1906 prompt "Kernel page size"
1907 default PAGE_SIZE_4KB
1908
1909 config PAGE_SIZE_4KB
1910 bool "4kB"
1911 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
1912 help
1913 This option select the standard 4kB Linux page size. On some
1914 R3000-family processors this is the only available page size. Using
1915 4kB page size will minimize memory consumption and is therefore
1916 recommended for low memory systems.
1917
1918 config PAGE_SIZE_8KB
1919 bool "8kB"
1920 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1921 help
1922 Using 8kB page size will result in higher performance kernel at
1923 the price of higher memory consumption. This option is available
1924 only on R8000 and cnMIPS processors. Note that you will need a
1925 suitable Linux distribution to support this.
1926
1927 config PAGE_SIZE_16KB
1928 bool "16kB"
1929 depends on !CPU_R3000 && !CPU_TX39XX
1930 help
1931 Using 16kB page size will result in higher performance kernel at
1932 the price of higher memory consumption. This option is available on
1933 all non-R3000 family processors. Note that you will need a suitable
1934 Linux distribution to support this.
1935
1936 config PAGE_SIZE_32KB
1937 bool "32kB"
1938 depends on CPU_CAVIUM_OCTEON
1939 help
1940 Using 32kB page size will result in higher performance kernel at
1941 the price of higher memory consumption. This option is available
1942 only on cnMIPS cores. Note that you will need a suitable Linux
1943 distribution to support this.
1944
1945 config PAGE_SIZE_64KB
1946 bool "64kB"
1947 depends on !CPU_R3000 && !CPU_TX39XX
1948 help
1949 Using 64kB page size will result in higher performance kernel at
1950 the price of higher memory consumption. This option is available on
1951 all non-R3000 family processor. Not that at the time of this
1952 writing this option is still high experimental.
1953
1954 endchoice
1955
1956 config FORCE_MAX_ZONEORDER
1957 int "Maximum zone order"
1958 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
1959 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
1960 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
1961 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
1962 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
1963 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
1964 range 11 64
1965 default "11"
1966 help
1967 The kernel memory allocator divides physically contiguous memory
1968 blocks into "zones", where each zone is a power of two number of
1969 pages. This option selects the largest power of two that the kernel
1970 keeps in the memory allocator. If you need to allocate very large
1971 blocks of physically contiguous memory, then you may need to
1972 increase this value.
1973
1974 This config option is actually maximum order plus one. For example,
1975 a value of 11 means that the largest free memory block is 2^10 pages.
1976
1977 The page size is not necessarily 4KB. Keep this in mind
1978 when choosing a value for this option.
1979
1980 config BOARD_SCACHE
1981 bool
1982
1983 config IP22_CPU_SCACHE
1984 bool
1985 select BOARD_SCACHE
1986
1987 #
1988 # Support for a MIPS32 / MIPS64 style S-caches
1989 #
1990 config MIPS_CPU_SCACHE
1991 bool
1992 select BOARD_SCACHE
1993
1994 config R5000_CPU_SCACHE
1995 bool
1996 select BOARD_SCACHE
1997
1998 config RM7000_CPU_SCACHE
1999 bool
2000 select BOARD_SCACHE
2001
2002 config SIBYTE_DMA_PAGEOPS
2003 bool "Use DMA to clear/copy pages"
2004 depends on CPU_SB1
2005 help
2006 Instead of using the CPU to zero and copy pages, use a Data Mover
2007 channel. These DMA channels are otherwise unused by the standard
2008 SiByte Linux port. Seems to give a small performance benefit.
2009
2010 config CPU_HAS_PREFETCH
2011 bool
2012
2013 config CPU_GENERIC_DUMP_TLB
2014 bool
2015 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2016
2017 config CPU_R4K_FPU
2018 bool
2019 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2020
2021 config CPU_R4K_CACHE_TLB
2022 bool
2023 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2024
2025 config MIPS_MT_SMP
2026 bool "MIPS MT SMP support (1 TC on each available VPE)"
2027 depends on SYS_SUPPORTS_MULTITHREADING
2028 select CPU_MIPSR2_IRQ_VI
2029 select CPU_MIPSR2_IRQ_EI
2030 select SYNC_R4K
2031 select MIPS_GIC_IPI
2032 select MIPS_MT
2033 select SMP
2034 select SMP_UP
2035 select SYS_SUPPORTS_SMP
2036 select SYS_SUPPORTS_SCHED_SMT
2037 select MIPS_PERF_SHARED_TC_COUNTERS
2038 help
2039 This is a kernel model which is known as SMVP. This is supported
2040 on cores with the MT ASE and uses the available VPEs to implement
2041 virtual processors which supports SMP. This is equivalent to the
2042 Intel Hyperthreading feature. For further information go to
2043 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2044
2045 config MIPS_MT
2046 bool
2047
2048 config SCHED_SMT
2049 bool "SMT (multithreading) scheduler support"
2050 depends on SYS_SUPPORTS_SCHED_SMT
2051 default n
2052 help
2053 SMT scheduler support improves the CPU scheduler's decision making
2054 when dealing with MIPS MT enabled cores at a cost of slightly
2055 increased overhead in some places. If unsure say N here.
2056
2057 config SYS_SUPPORTS_SCHED_SMT
2058 bool
2059
2060 config SYS_SUPPORTS_MULTITHREADING
2061 bool
2062
2063 config MIPS_MT_FPAFF
2064 bool "Dynamic FPU affinity for FP-intensive threads"
2065 default y
2066 depends on MIPS_MT_SMP
2067
2068 config MIPSR2_TO_R6_EMULATOR
2069 bool "MIPS R2-to-R6 emulator"
2070 depends on CPU_MIPSR6 && !SMP
2071 default y
2072 help
2073 Choose this option if you want to run non-R6 MIPS userland code.
2074 Even if you say 'Y' here, the emulator will still be disabled by
2075 default. You can enable it using the 'mipsr2emul' kernel option.
2076 The only reason this is a build-time option is to save ~14K from the
2077 final kernel image.
2078 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2079 depends on SMP && CPU_MIPSR6
2080
2081 config MIPS_VPE_LOADER
2082 bool "VPE loader support."
2083 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2084 select CPU_MIPSR2_IRQ_VI
2085 select CPU_MIPSR2_IRQ_EI
2086 select MIPS_MT
2087 help
2088 Includes a loader for loading an elf relocatable object
2089 onto another VPE and running it.
2090
2091 config MIPS_VPE_LOADER_CMP
2092 bool
2093 default "y"
2094 depends on MIPS_VPE_LOADER && MIPS_CMP
2095
2096 config MIPS_VPE_LOADER_MT
2097 bool
2098 default "y"
2099 depends on MIPS_VPE_LOADER && !MIPS_CMP
2100
2101 config MIPS_VPE_LOADER_TOM
2102 bool "Load VPE program into memory hidden from linux"
2103 depends on MIPS_VPE_LOADER
2104 default y
2105 help
2106 The loader can use memory that is present but has been hidden from
2107 Linux using the kernel command line option "mem=xxMB". It's up to
2108 you to ensure the amount you put in the option and the space your
2109 program requires is less or equal to the amount physically present.
2110
2111 config MIPS_VPE_APSP_API
2112 bool "Enable support for AP/SP API (RTLX)"
2113 depends on MIPS_VPE_LOADER
2114 help
2115
2116 config MIPS_VPE_APSP_API_CMP
2117 bool
2118 default "y"
2119 depends on MIPS_VPE_APSP_API && MIPS_CMP
2120
2121 config MIPS_VPE_APSP_API_MT
2122 bool
2123 default "y"
2124 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2125
2126 config MIPS_CMP
2127 bool "MIPS CMP framework support (DEPRECATED)"
2128 depends on SYS_SUPPORTS_MIPS_CMP
2129 select MIPS_GIC_IPI
2130 select SMP
2131 select SYNC_R4K
2132 select SYS_SUPPORTS_SMP
2133 select WEAK_ORDERING
2134 default n
2135 help
2136 Select this if you are using a bootloader which implements the "CMP
2137 framework" protocol (ie. YAMON) and want your kernel to make use of
2138 its ability to start secondary CPUs.
2139
2140 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2141 instead of this.
2142
2143 config MIPS_CPS
2144 bool "MIPS Coherent Processing System support"
2145 depends on SYS_SUPPORTS_MIPS_CPS
2146 select MIPS_CM
2147 select MIPS_CPC
2148 select MIPS_CPS_PM if HOTPLUG_CPU
2149 select MIPS_GIC_IPI
2150 select SMP
2151 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2152 select SYS_SUPPORTS_HOTPLUG_CPU
2153 select SYS_SUPPORTS_SMP
2154 select WEAK_ORDERING
2155 help
2156 Select this if you wish to run an SMP kernel across multiple cores
2157 within a MIPS Coherent Processing System. When this option is
2158 enabled the kernel will probe for other cores and boot them with
2159 no external assistance. It is safe to enable this when hardware
2160 support is unavailable.
2161
2162 config MIPS_CPS_PM
2163 depends on MIPS_CPS
2164 select MIPS_CPC
2165 bool
2166
2167 config MIPS_GIC_IPI
2168 bool
2169
2170 config MIPS_CM
2171 bool
2172
2173 config MIPS_CPC
2174 bool
2175
2176 config SB1_PASS_1_WORKAROUNDS
2177 bool
2178 depends on CPU_SB1_PASS_1
2179 default y
2180
2181 config SB1_PASS_2_WORKAROUNDS
2182 bool
2183 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2184 default y
2185
2186 config SB1_PASS_2_1_WORKAROUNDS
2187 bool
2188 depends on CPU_SB1 && CPU_SB1_PASS_2
2189 default y
2190
2191
2192 config ARCH_PHYS_ADDR_T_64BIT
2193 bool
2194
2195 choice
2196 prompt "SmartMIPS or microMIPS ASE support"
2197
2198 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2199 bool "None"
2200 help
2201 Select this if you want neither microMIPS nor SmartMIPS support
2202
2203 config CPU_HAS_SMARTMIPS
2204 depends on SYS_SUPPORTS_SMARTMIPS
2205 bool "SmartMIPS"
2206 help
2207 SmartMIPS is a extension of the MIPS32 architecture aimed at
2208 increased security at both hardware and software level for
2209 smartcards. Enabling this option will allow proper use of the
2210 SmartMIPS instructions by Linux applications. However a kernel with
2211 this option will not work on a MIPS core without SmartMIPS core. If
2212 you don't know you probably don't have SmartMIPS and should say N
2213 here.
2214
2215 config CPU_MICROMIPS
2216 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2217 bool "microMIPS"
2218 help
2219 When this option is enabled the kernel will be built using the
2220 microMIPS ISA
2221
2222 endchoice
2223
2224 config CPU_HAS_MSA
2225 bool "Support for the MIPS SIMD Architecture (EXPERIMENTAL)"
2226 depends on CPU_SUPPORTS_MSA
2227 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2228 help
2229 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2230 and a set of SIMD instructions to operate on them. When this option
2231 is enabled the kernel will support allocating & switching MSA
2232 vector register contexts. If you know that your kernel will only be
2233 running on CPUs which do not support MSA or that your userland will
2234 not be making use of it then you may wish to say N here to reduce
2235 the size & complexity of your kernel.
2236
2237 If unsure, say Y.
2238
2239 config CPU_HAS_WB
2240 bool
2241
2242 config XKS01
2243 bool
2244
2245 #
2246 # Vectored interrupt mode is an R2 feature
2247 #
2248 config CPU_MIPSR2_IRQ_VI
2249 bool
2250
2251 #
2252 # Extended interrupt mode is an R2 feature
2253 #
2254 config CPU_MIPSR2_IRQ_EI
2255 bool
2256
2257 config CPU_HAS_SYNC
2258 bool
2259 depends on !CPU_R3000
2260 default y
2261
2262 #
2263 # CPU non-features
2264 #
2265 config CPU_DADDI_WORKAROUNDS
2266 bool
2267
2268 config CPU_R4000_WORKAROUNDS
2269 bool
2270 select CPU_R4400_WORKAROUNDS
2271
2272 config CPU_R4400_WORKAROUNDS
2273 bool
2274
2275 #
2276 # - Highmem only makes sense for the 32-bit kernel.
2277 # - The current highmem code will only work properly on physically indexed
2278 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2279 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2280 # moment we protect the user and offer the highmem option only on machines
2281 # where it's known to be safe. This will not offer highmem on a few systems
2282 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2283 # indexed CPUs but we're playing safe.
2284 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2285 # know they might have memory configurations that could make use of highmem
2286 # support.
2287 #
2288 config HIGHMEM
2289 bool "High Memory Support"
2290 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2291
2292 config CPU_SUPPORTS_HIGHMEM
2293 bool
2294
2295 config SYS_SUPPORTS_HIGHMEM
2296 bool
2297
2298 config SYS_SUPPORTS_SMARTMIPS
2299 bool
2300
2301 config SYS_SUPPORTS_MICROMIPS
2302 bool
2303
2304 config SYS_SUPPORTS_MIPS16
2305 bool
2306 help
2307 This option must be set if a kernel might be executed on a MIPS16-
2308 enabled CPU even if MIPS16 is not actually being used. In other
2309 words, it makes the kernel MIPS16-tolerant.
2310
2311 config CPU_SUPPORTS_MSA
2312 bool
2313
2314 config ARCH_FLATMEM_ENABLE
2315 def_bool y
2316 depends on !NUMA && !CPU_LOONGSON2
2317
2318 config ARCH_DISCONTIGMEM_ENABLE
2319 bool
2320 default y if SGI_IP27
2321 help
2322 Say Y to support efficient handling of discontiguous physical memory,
2323 for architectures which are either NUMA (Non-Uniform Memory Access)
2324 or have huge holes in the physical address space for other reasons.
2325 See <file:Documentation/vm/numa> for more.
2326
2327 config ARCH_SPARSEMEM_ENABLE
2328 bool
2329 select SPARSEMEM_STATIC
2330
2331 config NUMA
2332 bool "NUMA Support"
2333 depends on SYS_SUPPORTS_NUMA
2334 help
2335 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2336 Access). This option improves performance on systems with more
2337 than two nodes; on two node systems it is generally better to
2338 leave it disabled; on single node systems disable this option
2339 disabled.
2340
2341 config SYS_SUPPORTS_NUMA
2342 bool
2343
2344 config NODES_SHIFT
2345 int
2346 default "6"
2347 depends on NEED_MULTIPLE_NODES
2348
2349 config HW_PERF_EVENTS
2350 bool "Enable hardware performance counter support for perf events"
2351 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2352 default y
2353 help
2354 Enable hardware performance counter support for perf events. If
2355 disabled, perf events will use software events only.
2356
2357 source "mm/Kconfig"
2358
2359 config SMP
2360 bool "Multi-Processing support"
2361 depends on SYS_SUPPORTS_SMP
2362 help
2363 This enables support for systems with more than one CPU. If you have
2364 a system with only one CPU, say N. If you have a system with more
2365 than one CPU, say Y.
2366
2367 If you say N here, the kernel will run on uni- and multiprocessor
2368 machines, but will use only one CPU of a multiprocessor machine. If
2369 you say Y here, the kernel will run on many, but not all,
2370 uniprocessor machines. On a uniprocessor machine, the kernel
2371 will run faster if you say N here.
2372
2373 People using multiprocessor machines who say Y here should also say
2374 Y to "Enhanced Real Time Clock Support", below.
2375
2376 See also the SMP-HOWTO available at
2377 <http://www.tldp.org/docs.html#howto>.
2378
2379 If you don't know what to do here, say N.
2380
2381 config SMP_UP
2382 bool
2383
2384 config SYS_SUPPORTS_MIPS_CMP
2385 bool
2386
2387 config SYS_SUPPORTS_MIPS_CPS
2388 bool
2389
2390 config SYS_SUPPORTS_SMP
2391 bool
2392
2393 config NR_CPUS_DEFAULT_4
2394 bool
2395
2396 config NR_CPUS_DEFAULT_8
2397 bool
2398
2399 config NR_CPUS_DEFAULT_16
2400 bool
2401
2402 config NR_CPUS_DEFAULT_32
2403 bool
2404
2405 config NR_CPUS_DEFAULT_64
2406 bool
2407
2408 config NR_CPUS
2409 int "Maximum number of CPUs (2-256)"
2410 range 2 256
2411 depends on SMP
2412 default "4" if NR_CPUS_DEFAULT_4
2413 default "8" if NR_CPUS_DEFAULT_8
2414 default "16" if NR_CPUS_DEFAULT_16
2415 default "32" if NR_CPUS_DEFAULT_32
2416 default "64" if NR_CPUS_DEFAULT_64
2417 help
2418 This allows you to specify the maximum number of CPUs which this
2419 kernel will support. The maximum supported value is 32 for 32-bit
2420 kernel and 64 for 64-bit kernels; the minimum value which makes
2421 sense is 1 for Qemu (useful only for kernel debugging purposes)
2422 and 2 for all others.
2423
2424 This is purely to save memory - each supported CPU adds
2425 approximately eight kilobytes to the kernel image. For best
2426 performance should round up your number of processors to the next
2427 power of two.
2428
2429 config MIPS_PERF_SHARED_TC_COUNTERS
2430 bool
2431
2432 #
2433 # Timer Interrupt Frequency Configuration
2434 #
2435
2436 choice
2437 prompt "Timer frequency"
2438 default HZ_250
2439 help
2440 Allows the configuration of the timer frequency.
2441
2442 config HZ_48
2443 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2444
2445 config HZ_100
2446 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2447
2448 config HZ_128
2449 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2450
2451 config HZ_250
2452 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2453
2454 config HZ_256
2455 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2456
2457 config HZ_1000
2458 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2459
2460 config HZ_1024
2461 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2462
2463 endchoice
2464
2465 config SYS_SUPPORTS_48HZ
2466 bool
2467
2468 config SYS_SUPPORTS_100HZ
2469 bool
2470
2471 config SYS_SUPPORTS_128HZ
2472 bool
2473
2474 config SYS_SUPPORTS_250HZ
2475 bool
2476
2477 config SYS_SUPPORTS_256HZ
2478 bool
2479
2480 config SYS_SUPPORTS_1000HZ
2481 bool
2482
2483 config SYS_SUPPORTS_1024HZ
2484 bool
2485
2486 config SYS_SUPPORTS_ARBIT_HZ
2487 bool
2488 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2489 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2490 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2491 !SYS_SUPPORTS_1024HZ
2492
2493 config HZ
2494 int
2495 default 48 if HZ_48
2496 default 100 if HZ_100
2497 default 128 if HZ_128
2498 default 250 if HZ_250
2499 default 256 if HZ_256
2500 default 1000 if HZ_1000
2501 default 1024 if HZ_1024
2502
2503 source "kernel/Kconfig.preempt"
2504
2505 config KEXEC
2506 bool "Kexec system call"
2507 help
2508 kexec is a system call that implements the ability to shutdown your
2509 current kernel, and to start another kernel. It is like a reboot
2510 but it is independent of the system firmware. And like a reboot
2511 you can start any kernel with it, not just Linux.
2512
2513 The name comes from the similarity to the exec system call.
2514
2515 It is an ongoing process to be certain the hardware in a machine
2516 is properly shutdown, so do not be surprised if this code does not
2517 initially work for you. As of this writing the exact hardware
2518 interface is strongly in flux, so no good recommendation can be
2519 made.
2520
2521 config CRASH_DUMP
2522 bool "Kernel crash dumps"
2523 help
2524 Generate crash dump after being started by kexec.
2525 This should be normally only set in special crash dump kernels
2526 which are loaded in the main kernel with kexec-tools into
2527 a specially reserved region and then later executed after
2528 a crash by kdump/kexec. The crash dump kernel must be compiled
2529 to a memory address not used by the main kernel or firmware using
2530 PHYSICAL_START.
2531
2532 config PHYSICAL_START
2533 hex "Physical address where the kernel is loaded"
2534 default "0xffffffff84000000" if 64BIT
2535 default "0x84000000" if 32BIT
2536 depends on CRASH_DUMP
2537 help
2538 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2539 If you plan to use kernel for capturing the crash dump change
2540 this value to start of the reserved region (the "X" value as
2541 specified in the "crashkernel=YM@XM" command line boot parameter
2542 passed to the panic-ed kernel).
2543
2544 config SECCOMP
2545 bool "Enable seccomp to safely compute untrusted bytecode"
2546 depends on PROC_FS
2547 default y
2548 help
2549 This kernel feature is useful for number crunching applications
2550 that may need to compute untrusted bytecode during their
2551 execution. By using pipes or other transports made available to
2552 the process as file descriptors supporting the read/write
2553 syscalls, it's possible to isolate those applications in
2554 their own address space using seccomp. Once seccomp is
2555 enabled via /proc/<pid>/seccomp, it cannot be disabled
2556 and the task is only allowed to execute a few safe syscalls
2557 defined by each seccomp mode.
2558
2559 If unsure, say Y. Only embedded should say N here.
2560
2561 config MIPS_O32_FP64_SUPPORT
2562 bool "Support for O32 binaries using 64-bit FP (EXPERIMENTAL)"
2563 depends on 32BIT || MIPS32_O32
2564 help
2565 When this is enabled, the kernel will support use of 64-bit floating
2566 point registers with binaries using the O32 ABI along with the
2567 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2568 32-bit MIPS systems this support is at the cost of increasing the
2569 size and complexity of the compiled FPU emulator. Thus if you are
2570 running a MIPS32 system and know that none of your userland binaries
2571 will require 64-bit floating point, you may wish to reduce the size
2572 of your kernel & potentially improve FP emulation performance by
2573 saying N here.
2574
2575 Although binutils currently supports use of this flag the details
2576 concerning its effect upon the O32 ABI in userland are still being
2577 worked on. In order to avoid userland becoming dependant upon current
2578 behaviour before the details have been finalised, this option should
2579 be considered experimental and only enabled by those working upon
2580 said details.
2581
2582 If unsure, say N.
2583
2584 config USE_OF
2585 bool
2586 select OF
2587 select OF_EARLY_FLATTREE
2588 select IRQ_DOMAIN
2589
2590 config BUILTIN_DTB
2591 bool
2592
2593 endmenu
2594
2595 config LOCKDEP_SUPPORT
2596 bool
2597 default y
2598
2599 config STACKTRACE_SUPPORT
2600 bool
2601 default y
2602
2603 source "init/Kconfig"
2604
2605 source "kernel/Kconfig.freezer"
2606
2607 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2608
2609 config HW_HAS_EISA
2610 bool
2611 config HW_HAS_PCI
2612 bool
2613
2614 config PCI
2615 bool "Support for PCI controller"
2616 depends on HW_HAS_PCI
2617 select PCI_DOMAINS
2618 select NO_GENERIC_PCI_IOPORT_MAP
2619 help
2620 Find out whether you have a PCI motherboard. PCI is the name of a
2621 bus system, i.e. the way the CPU talks to the other stuff inside
2622 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2623 say Y, otherwise N.
2624
2625 config HT_PCI
2626 bool "Support for HT-linked PCI"
2627 default y
2628 depends on CPU_LOONGSON3
2629 select PCI
2630 select PCI_DOMAINS
2631 help
2632 Loongson family machines use Hyper-Transport bus for inter-core
2633 connection and device connection. The PCI bus is a subordinate
2634 linked at HT. Choose Y for Loongson-3 based machines.
2635
2636 config PCI_DOMAINS
2637 bool
2638
2639 source "drivers/pci/Kconfig"
2640
2641 source "drivers/pci/pcie/Kconfig"
2642
2643 #
2644 # ISA support is now enabled via select. Too many systems still have the one
2645 # or other ISA chip on the board that users don't know about so don't expect
2646 # users to choose the right thing ...
2647 #
2648 config ISA
2649 bool
2650
2651 config EISA
2652 bool "EISA support"
2653 depends on HW_HAS_EISA
2654 select ISA
2655 select GENERIC_ISA_DMA
2656 ---help---
2657 The Extended Industry Standard Architecture (EISA) bus was
2658 developed as an open alternative to the IBM MicroChannel bus.
2659
2660 The EISA bus provided some of the features of the IBM MicroChannel
2661 bus while maintaining backward compatibility with cards made for
2662 the older ISA bus. The EISA bus saw limited use between 1988 and
2663 1995 when it was made obsolete by the PCI bus.
2664
2665 Say Y here if you are building a kernel for an EISA-based machine.
2666
2667 Otherwise, say N.
2668
2669 source "drivers/eisa/Kconfig"
2670
2671 config TC
2672 bool "TURBOchannel support"
2673 depends on MACH_DECSTATION
2674 help
2675 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2676 processors. TURBOchannel programming specifications are available
2677 at:
2678 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2679 and:
2680 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2681 Linux driver support status is documented at:
2682 <http://www.linux-mips.org/wiki/DECstation>
2683
2684 config MMU
2685 bool
2686 default y
2687
2688 config I8253
2689 bool
2690 select CLKSRC_I8253
2691 select CLKEVT_I8253
2692 select MIPS_EXTERNAL_TIMER
2693
2694 config ZONE_DMA
2695 bool
2696
2697 config ZONE_DMA32
2698 bool
2699
2700 source "drivers/pcmcia/Kconfig"
2701
2702 source "drivers/pci/hotplug/Kconfig"
2703
2704 config RAPIDIO
2705 tristate "RapidIO support"
2706 depends on PCI
2707 default n
2708 help
2709 If you say Y here, the kernel will include drivers and
2710 infrastructure code to support RapidIO interconnect devices.
2711
2712 source "drivers/rapidio/Kconfig"
2713
2714 endmenu
2715
2716 menu "Executable file formats"
2717
2718 source "fs/Kconfig.binfmt"
2719
2720 config TRAD_SIGNALS
2721 bool
2722
2723 config MIPS32_COMPAT
2724 bool
2725
2726 config COMPAT
2727 bool
2728
2729 config SYSVIPC_COMPAT
2730 bool
2731
2732 config MIPS32_O32
2733 bool "Kernel support for o32 binaries"
2734 depends on 64BIT
2735 select ARCH_WANT_OLD_COMPAT_IPC
2736 select COMPAT
2737 select MIPS32_COMPAT
2738 select SYSVIPC_COMPAT if SYSVIPC
2739 help
2740 Select this option if you want to run o32 binaries. These are pure
2741 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2742 existing binaries are in this format.
2743
2744 If unsure, say Y.
2745
2746 config MIPS32_N32
2747 bool "Kernel support for n32 binaries"
2748 depends on 64BIT
2749 select COMPAT
2750 select MIPS32_COMPAT
2751 select SYSVIPC_COMPAT if SYSVIPC
2752 help
2753 Select this option if you want to run n32 binaries. These are
2754 64-bit binaries using 32-bit quantities for addressing and certain
2755 data that would normally be 64-bit. They are used in special
2756 cases.
2757
2758 If unsure, say N.
2759
2760 config BINFMT_ELF32
2761 bool
2762 default y if MIPS32_O32 || MIPS32_N32
2763
2764 endmenu
2765
2766 menu "Power management options"
2767
2768 config ARCH_HIBERNATION_POSSIBLE
2769 def_bool y
2770 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2771
2772 config ARCH_SUSPEND_POSSIBLE
2773 def_bool y
2774 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2775
2776 source "kernel/power/Kconfig"
2777
2778 endmenu
2779
2780 config MIPS_EXTERNAL_TIMER
2781 bool
2782
2783 menu "CPU Power Management"
2784
2785 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2786 source "drivers/cpufreq/Kconfig"
2787 endif
2788
2789 source "drivers/cpuidle/Kconfig"
2790
2791 endmenu
2792
2793 source "net/Kconfig"
2794
2795 source "drivers/Kconfig"
2796
2797 source "drivers/firmware/Kconfig"
2798
2799 source "fs/Kconfig"
2800
2801 source "arch/mips/Kconfig.debug"
2802
2803 source "security/Kconfig"
2804
2805 source "crypto/Kconfig"
2806
2807 source "lib/Kconfig"
2808
2809 source "arch/mips/kvm/Kconfig"
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