blob: 3392cc9abda272f280cbfbbe59890f466d546b3d [file] [log] [blame]
xjb04a4022021-11-25 15:01:52 +08001# SPDX-License-Identifier: GPL-2.0
2config MIPS
3 bool
4 default y
5 select ARCH_BINFMT_ELF_STATE
6 select ARCH_CLOCKSOURCE_DATA
7 select ARCH_DISCARD_MEMBLOCK
8 select ARCH_HAS_ELF_RANDOMIZE
9 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
10 select ARCH_SUPPORTS_UPROBES
11 select ARCH_USE_BUILTIN_BSWAP
12 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
13 select ARCH_USE_QUEUED_RWLOCKS
14 select ARCH_USE_QUEUED_SPINLOCKS
15 select ARCH_WANT_IPC_PARSE_VERSION
16 select BUILDTIME_EXTABLE_SORT
17 select CLONE_BACKWARDS
18 select CPU_PM if CPU_IDLE
19 select DMA_DIRECT_OPS
20 select GENERIC_ATOMIC64 if !64BIT
21 select GENERIC_CLOCKEVENTS
22 select GENERIC_CMOS_UPDATE
23 select GENERIC_CPU_AUTOPROBE
24 select GENERIC_IRQ_PROBE
25 select GENERIC_IRQ_SHOW
26 select GENERIC_LIB_ASHLDI3
27 select GENERIC_LIB_ASHRDI3
28 select GENERIC_LIB_CMPDI2
29 select GENERIC_LIB_LSHRDI3
30 select GENERIC_LIB_UCMPDI2
31 select GENERIC_PCI_IOMAP
32 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
33 select GENERIC_SMP_IDLE_THREAD
34 select GENERIC_TIME_VSYSCALL
35 select HANDLE_DOMAIN_IRQ
36 select HAVE_ARCH_COMPILER_H
37 select HAVE_ARCH_JUMP_LABEL
38 select HAVE_ARCH_KGDB
39 select HAVE_ARCH_MMAP_RND_BITS if MMU
40 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
41 select HAVE_ARCH_SECCOMP_FILTER
42 select HAVE_ARCH_TRACEHOOK
43 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
44 select HAVE_CBPF_JIT if (!64BIT && !CPU_MICROMIPS)
45 select HAVE_EBPF_JIT if (64BIT && !CPU_MICROMIPS)
46 select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
47 select HAVE_CONTEXT_TRACKING
48 select HAVE_COPY_THREAD_TLS
49 select HAVE_C_RECORDMCOUNT
50 select HAVE_DEBUG_KMEMLEAK
51 select HAVE_DEBUG_STACKOVERFLOW
52 select HAVE_DMA_CONTIGUOUS
53 select HAVE_DYNAMIC_FTRACE
54 select HAVE_EXIT_THREAD
55 select HAVE_FTRACE_MCOUNT_RECORD
56 select HAVE_FUNCTION_GRAPH_TRACER
57 select HAVE_FUNCTION_TRACER
58 select HAVE_GENERIC_DMA_COHERENT
59 select HAVE_IDE
60 select HAVE_IRQ_EXIT_ON_IRQ_STACK
61 select HAVE_IRQ_TIME_ACCOUNTING
62 select HAVE_KPROBES
63 select HAVE_KRETPROBES
64 select HAVE_MEMBLOCK
65 select HAVE_MEMBLOCK_NODE_MAP
66 select HAVE_MOD_ARCH_SPECIFIC
67 select HAVE_NMI
68 select HAVE_OPROFILE
69 select HAVE_PERF_EVENTS
70 select HAVE_REGS_AND_STACK_ACCESS_API
71 select HAVE_RSEQ
72 select HAVE_STACKPROTECTOR
73 select HAVE_SYSCALL_TRACEPOINTS
74 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
75 select IRQ_FORCED_THREADING
76 select MODULES_USE_ELF_RELA if MODULES && 64BIT
77 select MODULES_USE_ELF_REL if MODULES
78 select PERF_USE_VMALLOC
79 select RTC_LIB if !MACH_LOONGSON64
80 select SYSCTL_EXCEPTION_TRACE
81 select VIRT_TO_BUS
82
83menu "Machine selection"
84
85choice
86 prompt "System type"
87 default MIPS_GENERIC
88
89config MIPS_GENERIC
90 bool "Generic board-agnostic MIPS kernel"
91 select BOOT_RAW
92 select BUILTIN_DTB
93 select CEVT_R4K
94 select CLKSRC_MIPS_GIC
95 select COMMON_CLK
96 select CPU_MIPSR2_IRQ_VI
97 select CPU_MIPSR2_IRQ_EI
98 select CSRC_R4K
99 select DMA_PERDEV_COHERENT
100 select HW_HAS_PCI
101 select IRQ_MIPS_CPU
102 select LIBFDT
103 select MIPS_AUTO_PFN_OFFSET
104 select MIPS_CPU_SCACHE
105 select MIPS_GIC
106 select MIPS_L1_CACHE_SHIFT_7
107 select NO_EXCEPT_FILL
108 select PCI_DRIVERS_GENERIC
109 select PINCTRL
110 select SMP_UP if SMP
111 select SWAP_IO_SPACE
112 select SYS_HAS_CPU_MIPS32_R1
113 select SYS_HAS_CPU_MIPS32_R2
114 select SYS_HAS_CPU_MIPS32_R6
115 select SYS_HAS_CPU_MIPS64_R1
116 select SYS_HAS_CPU_MIPS64_R2
117 select SYS_HAS_CPU_MIPS64_R6
118 select SYS_SUPPORTS_32BIT_KERNEL
119 select SYS_SUPPORTS_64BIT_KERNEL
120 select SYS_SUPPORTS_BIG_ENDIAN
121 select SYS_SUPPORTS_HIGHMEM
122 select SYS_SUPPORTS_LITTLE_ENDIAN
123 select SYS_SUPPORTS_MICROMIPS
124 select SYS_SUPPORTS_MIPS_CPS
125 select SYS_SUPPORTS_MIPS16
126 select SYS_SUPPORTS_MULTITHREADING
127 select SYS_SUPPORTS_RELOCATABLE
128 select SYS_SUPPORTS_SMARTMIPS
129 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
130 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
131 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
132 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
133 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
134 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
135 select USE_OF
136 help
137 Select this to build a kernel which aims to support multiple boards,
138 generally using a flattened device tree passed from the bootloader
139 using the boot protocol defined in the UHI (Unified Hosting
140 Interface) specification.
141
142config MIPS_ALCHEMY
143 bool "Alchemy processor based machines"
144 select PHYS_ADDR_T_64BIT
145 select CEVT_R4K
146 select CSRC_R4K
147 select IRQ_MIPS_CPU
148 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
149 select SYS_HAS_CPU_MIPS32_R1
150 select SYS_SUPPORTS_32BIT_KERNEL
151 select SYS_SUPPORTS_APM_EMULATION
152 select GPIOLIB
153 select SYS_SUPPORTS_ZBOOT
154 select COMMON_CLK
155
156config AR7
157 bool "Texas Instruments AR7"
158 select BOOT_ELF32
159 select DMA_NONCOHERENT
160 select CEVT_R4K
161 select CSRC_R4K
162 select IRQ_MIPS_CPU
163 select NO_EXCEPT_FILL
164 select SWAP_IO_SPACE
165 select SYS_HAS_CPU_MIPS32_R1
166 select SYS_HAS_EARLY_PRINTK
167 select SYS_SUPPORTS_32BIT_KERNEL
168 select SYS_SUPPORTS_LITTLE_ENDIAN
169 select SYS_SUPPORTS_MIPS16
170 select SYS_SUPPORTS_ZBOOT_UART16550
171 select GPIOLIB
172 select VLYNQ
173 select HAVE_CLK
174 help
175 Support for the Texas Instruments AR7 System-on-a-Chip
176 family: TNETD7100, 7200 and 7300.
177
178config ATH25
179 bool "Atheros AR231x/AR531x SoC support"
180 select CEVT_R4K
181 select CSRC_R4K
182 select DMA_NONCOHERENT
183 select IRQ_MIPS_CPU
184 select IRQ_DOMAIN
185 select SYS_HAS_CPU_MIPS32_R1
186 select SYS_SUPPORTS_BIG_ENDIAN
187 select SYS_SUPPORTS_32BIT_KERNEL
188 select SYS_HAS_EARLY_PRINTK
189 help
190 Support for Atheros AR231x and Atheros AR531x based boards
191
192config ATH79
193 bool "Atheros AR71XX/AR724X/AR913X based boards"
194 select ARCH_HAS_RESET_CONTROLLER
195 select BOOT_RAW
196 select CEVT_R4K
197 select CSRC_R4K
198 select DMA_NONCOHERENT
199 select GPIOLIB
200 select PINCTRL
201 select HAVE_CLK
202 select COMMON_CLK
203 select CLKDEV_LOOKUP
204 select IRQ_MIPS_CPU
205 select MIPS_MACHINE
206 select SYS_HAS_CPU_MIPS32_R2
207 select SYS_HAS_EARLY_PRINTK
208 select SYS_SUPPORTS_32BIT_KERNEL
209 select SYS_SUPPORTS_BIG_ENDIAN
210 select SYS_SUPPORTS_MIPS16
211 select SYS_SUPPORTS_ZBOOT_UART_PROM
212 select USE_OF
213 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
214 help
215 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
216
217config BMIPS_GENERIC
218 bool "Broadcom Generic BMIPS kernel"
219 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
220 select ARCH_HAS_PHYS_TO_DMA
221 select BOOT_RAW
222 select NO_EXCEPT_FILL
223 select USE_OF
224 select CEVT_R4K
225 select CSRC_R4K
226 select SYNC_R4K
227 select COMMON_CLK
228 select BCM6345_L1_IRQ
229 select BCM7038_L1_IRQ
230 select BCM7120_L2_IRQ
231 select BRCMSTB_L2_IRQ
232 select IRQ_MIPS_CPU
233 select DMA_NONCOHERENT
234 select SYS_SUPPORTS_32BIT_KERNEL
235 select SYS_SUPPORTS_LITTLE_ENDIAN
236 select SYS_SUPPORTS_BIG_ENDIAN
237 select SYS_SUPPORTS_HIGHMEM
238 select SYS_HAS_CPU_BMIPS32_3300
239 select SYS_HAS_CPU_BMIPS4350
240 select SYS_HAS_CPU_BMIPS4380
241 select SYS_HAS_CPU_BMIPS5000
242 select SWAP_IO_SPACE
243 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
244 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
245 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
246 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
247 select HARDIRQS_SW_RESEND
248 help
249 Build a generic DT-based kernel image that boots on select
250 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
251 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
252 must be set appropriately for your board.
253
254config BCM47XX
255 bool "Broadcom BCM47XX based boards"
256 select BOOT_RAW
257 select CEVT_R4K
258 select CSRC_R4K
259 select DMA_NONCOHERENT
260 select HW_HAS_PCI
261 select IRQ_MIPS_CPU
262 select SYS_HAS_CPU_MIPS32_R1
263 select NO_EXCEPT_FILL
264 select SYS_SUPPORTS_32BIT_KERNEL
265 select SYS_SUPPORTS_LITTLE_ENDIAN
266 select SYS_SUPPORTS_MIPS16
267 select SYS_SUPPORTS_ZBOOT
268 select SYS_HAS_EARLY_PRINTK
269 select USE_GENERIC_EARLY_PRINTK_8250
270 select GPIOLIB
271 select LEDS_GPIO_REGISTER
272 select BCM47XX_NVRAM
273 select BCM47XX_SPROM
274 select BCM47XX_SSB if !BCM47XX_BCMA
275 help
276 Support for BCM47XX based boards
277
278config BCM63XX
279 bool "Broadcom BCM63XX based boards"
280 select BOOT_RAW
281 select CEVT_R4K
282 select CSRC_R4K
283 select SYNC_R4K
284 select DMA_NONCOHERENT
285 select IRQ_MIPS_CPU
286 select SYS_SUPPORTS_32BIT_KERNEL
287 select SYS_SUPPORTS_BIG_ENDIAN
288 select SYS_HAS_EARLY_PRINTK
289 select SWAP_IO_SPACE
290 select GPIOLIB
291 select HAVE_CLK
292 select MIPS_L1_CACHE_SHIFT_4
293 select CLKDEV_LOOKUP
294 help
295 Support for BCM63XX based boards
296
297config MIPS_COBALT
298 bool "Cobalt Server"
299 select CEVT_R4K
300 select CSRC_R4K
301 select CEVT_GT641XX
302 select DMA_NONCOHERENT
303 select HW_HAS_PCI
304 select I8253
305 select I8259
306 select IRQ_MIPS_CPU
307 select IRQ_GT641XX
308 select PCI_GT64XXX_PCI0
309 select PCI
310 select SYS_HAS_CPU_NEVADA
311 select SYS_HAS_EARLY_PRINTK
312 select SYS_SUPPORTS_32BIT_KERNEL
313 select SYS_SUPPORTS_64BIT_KERNEL
314 select SYS_SUPPORTS_LITTLE_ENDIAN
315 select USE_GENERIC_EARLY_PRINTK_8250
316
317config MACH_DECSTATION
318 bool "DECstations"
319 select BOOT_ELF32
320 select CEVT_DS1287
321 select CEVT_R4K if CPU_R4X00
322 select CSRC_IOASIC
323 select CSRC_R4K if CPU_R4X00
324 select CPU_DADDI_WORKAROUNDS if 64BIT
325 select CPU_R4000_WORKAROUNDS if 64BIT
326 select CPU_R4400_WORKAROUNDS if 64BIT
327 select DMA_NONCOHERENT
328 select NO_IOPORT_MAP
329 select IRQ_MIPS_CPU
330 select SYS_HAS_CPU_R3000
331 select SYS_HAS_CPU_R4X00
332 select SYS_SUPPORTS_32BIT_KERNEL
333 select SYS_SUPPORTS_64BIT_KERNEL
334 select SYS_SUPPORTS_LITTLE_ENDIAN
335 select SYS_SUPPORTS_128HZ
336 select SYS_SUPPORTS_256HZ
337 select SYS_SUPPORTS_1024HZ
338 select MIPS_L1_CACHE_SHIFT_4
339 help
340 This enables support for DEC's MIPS based workstations. For details
341 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
342 DECstation porting pages on <http://decstation.unix-ag.org/>.
343
344 If you have one of the following DECstation Models you definitely
345 want to choose R4xx0 for the CPU Type:
346
347 DECstation 5000/50
348 DECstation 5000/150
349 DECstation 5000/260
350 DECsystem 5900/260
351
352 otherwise choose R3000.
353
354config MACH_JAZZ
355 bool "Jazz family of machines"
356 select ARCH_MIGHT_HAVE_PC_PARPORT
357 select ARCH_MIGHT_HAVE_PC_SERIO
358 select FW_ARC
359 select FW_ARC32
360 select ARCH_MAY_HAVE_PC_FDC
361 select CEVT_R4K
362 select CSRC_R4K
363 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
364 select GENERIC_ISA_DMA
365 select HAVE_PCSPKR_PLATFORM
366 select IRQ_MIPS_CPU
367 select I8253
368 select I8259
369 select ISA
370 select SYS_HAS_CPU_R4X00
371 select SYS_SUPPORTS_32BIT_KERNEL
372 select SYS_SUPPORTS_64BIT_KERNEL
373 select SYS_SUPPORTS_100HZ
374 help
375 This a family of machines based on the MIPS R4030 chipset which was
376 used by several vendors to build RISC/os and Windows NT workstations.
377 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
378 Olivetti M700-10 workstations.
379
380config MACH_INGENIC
381 bool "Ingenic SoC based machines"
382 select SYS_SUPPORTS_32BIT_KERNEL
383 select SYS_SUPPORTS_LITTLE_ENDIAN
384 select SYS_SUPPORTS_ZBOOT_UART16550
385 select DMA_NONCOHERENT
386 select IRQ_MIPS_CPU
387 select PINCTRL
388 select GPIOLIB
389 select COMMON_CLK
390 select GENERIC_IRQ_CHIP
391 select BUILTIN_DTB
392 select USE_OF
393 select LIBFDT
394
395config LANTIQ
396 bool "Lantiq based platforms"
397 select DMA_NONCOHERENT
398 select IRQ_MIPS_CPU
399 select CEVT_R4K
400 select CSRC_R4K
401 select SYS_HAS_CPU_MIPS32_R1
402 select SYS_HAS_CPU_MIPS32_R2
403 select SYS_SUPPORTS_BIG_ENDIAN
404 select SYS_SUPPORTS_32BIT_KERNEL
405 select SYS_SUPPORTS_MIPS16
406 select SYS_SUPPORTS_MULTITHREADING
407 select SYS_SUPPORTS_VPE_LOADER
408 select SYS_HAS_EARLY_PRINTK
409 select GPIOLIB
410 select SWAP_IO_SPACE
411 select BOOT_RAW
412 select CLKDEV_LOOKUP
413 select USE_OF
414 select PINCTRL
415 select PINCTRL_LANTIQ
416 select ARCH_HAS_RESET_CONTROLLER
417 select RESET_CONTROLLER
418
419config LASAT
420 bool "LASAT Networks platforms"
421 select CEVT_R4K
422 select CRC32
423 select CSRC_R4K
424 select DMA_NONCOHERENT
425 select SYS_HAS_EARLY_PRINTK
426 select HW_HAS_PCI
427 select IRQ_MIPS_CPU
428 select PCI_GT64XXX_PCI0
429 select MIPS_NILE4
430 select R5000_CPU_SCACHE
431 select SYS_HAS_CPU_R5000
432 select SYS_SUPPORTS_32BIT_KERNEL
433 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
434 select SYS_SUPPORTS_LITTLE_ENDIAN
435
436config MACH_LOONGSON32
437 bool "Loongson-1 family of machines"
438 select SYS_SUPPORTS_ZBOOT
439 help
440 This enables support for the Loongson-1 family of machines.
441
442 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
443 the Institute of Computing Technology (ICT), Chinese Academy of
444 Sciences (CAS).
445
446config MACH_LOONGSON64
447 bool "Loongson-2/3 family of machines"
448 select SYS_SUPPORTS_ZBOOT
449 help
450 This enables the support of Loongson-2/3 family of machines.
451
452 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
453 family of multi-core CPUs. They are both 64-bit general-purpose
454 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
455 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
456 in the People's Republic of China. The chief architect is Professor
457 Weiwu Hu.
458
459config MACH_PISTACHIO
460 bool "IMG Pistachio SoC based boards"
461 select BOOT_ELF32
462 select BOOT_RAW
463 select CEVT_R4K
464 select CLKSRC_MIPS_GIC
465 select COMMON_CLK
466 select CSRC_R4K
467 select DMA_NONCOHERENT
468 select GPIOLIB
469 select IRQ_MIPS_CPU
470 select LIBFDT
471 select MFD_SYSCON
472 select MIPS_CPU_SCACHE
473 select MIPS_GIC
474 select PINCTRL
475 select REGULATOR
476 select SYS_HAS_CPU_MIPS32_R2
477 select SYS_SUPPORTS_32BIT_KERNEL
478 select SYS_SUPPORTS_LITTLE_ENDIAN
479 select SYS_SUPPORTS_MIPS_CPS
480 select SYS_SUPPORTS_MULTITHREADING
481 select SYS_SUPPORTS_RELOCATABLE
482 select SYS_SUPPORTS_ZBOOT
483 select SYS_HAS_EARLY_PRINTK
484 select USE_GENERIC_EARLY_PRINTK_8250
485 select USE_OF
486 help
487 This enables support for the IMG Pistachio SoC platform.
488
489config MIPS_MALTA
490 bool "MIPS Malta board"
491 select ARCH_MAY_HAVE_PC_FDC
492 select ARCH_MIGHT_HAVE_PC_PARPORT
493 select ARCH_MIGHT_HAVE_PC_SERIO
494 select BOOT_ELF32
495 select BOOT_RAW
496 select BUILTIN_DTB
497 select CEVT_R4K
498 select CSRC_R4K
499 select CLKSRC_MIPS_GIC
500 select COMMON_CLK
501 select DMA_MAYBE_COHERENT
502 select GENERIC_ISA_DMA
503 select HAVE_PCSPKR_PLATFORM
504 select IRQ_MIPS_CPU
505 select MIPS_GIC
506 select HW_HAS_PCI
507 select I8253
508 select I8259
509 select MIPS_BONITO64
510 select MIPS_CPU_SCACHE
511 select MIPS_L1_CACHE_SHIFT_6
512 select PCI_GT64XXX_PCI0
513 select MIPS_MSC
514 select SMP_UP if SMP
515 select SWAP_IO_SPACE
516 select SYS_HAS_CPU_MIPS32_R1
517 select SYS_HAS_CPU_MIPS32_R2
518 select SYS_HAS_CPU_MIPS32_R3_5
519 select SYS_HAS_CPU_MIPS32_R5
520 select SYS_HAS_CPU_MIPS32_R6
521 select SYS_HAS_CPU_MIPS64_R1
522 select SYS_HAS_CPU_MIPS64_R2
523 select SYS_HAS_CPU_MIPS64_R6
524 select SYS_HAS_CPU_NEVADA
525 select SYS_HAS_CPU_RM7000
526 select SYS_SUPPORTS_32BIT_KERNEL
527 select SYS_SUPPORTS_64BIT_KERNEL
528 select SYS_SUPPORTS_BIG_ENDIAN
529 select SYS_SUPPORTS_HIGHMEM
530 select SYS_SUPPORTS_LITTLE_ENDIAN
531 select SYS_SUPPORTS_MICROMIPS
532 select SYS_SUPPORTS_MIPS_CMP
533 select SYS_SUPPORTS_MIPS_CPS
534 select SYS_SUPPORTS_MIPS16
535 select SYS_SUPPORTS_MULTITHREADING
536 select SYS_SUPPORTS_SMARTMIPS
537 select SYS_SUPPORTS_VPE_LOADER
538 select SYS_SUPPORTS_ZBOOT
539 select SYS_SUPPORTS_RELOCATABLE
540 select USE_OF
541 select LIBFDT
542 select ZONE_DMA32 if 64BIT
543 select BUILTIN_DTB
544 select LIBFDT
545 help
546 This enables support for the MIPS Technologies Malta evaluation
547 board.
548
549config MACH_PIC32
550 bool "Microchip PIC32 Family"
551 help
552 This enables support for the Microchip PIC32 family of platforms.
553
554 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
555 microcontrollers.
556
557config NEC_MARKEINS
558 bool "NEC EMMA2RH Mark-eins board"
559 select SOC_EMMA2RH
560 select HW_HAS_PCI
561 help
562 This enables support for the NEC Electronics Mark-eins boards.
563
564config MACH_VR41XX
565 bool "NEC VR4100 series based machines"
566 select CEVT_R4K
567 select CSRC_R4K
568 select SYS_HAS_CPU_VR41XX
569 select SYS_SUPPORTS_MIPS16
570 select GPIOLIB
571
572config NXP_STB220
573 bool "NXP STB220 board"
574 select SOC_PNX833X
575 help
576 Support for NXP Semiconductors STB220 Development Board.
577
578config NXP_STB225
579 bool "NXP 225 board"
580 select SOC_PNX833X
581 select SOC_PNX8335
582 help
583 Support for NXP Semiconductors STB225 Development Board.
584
585config PMC_MSP
586 bool "PMC-Sierra MSP chipsets"
587 select CEVT_R4K
588 select CSRC_R4K
589 select DMA_NONCOHERENT
590 select SWAP_IO_SPACE
591 select NO_EXCEPT_FILL
592 select BOOT_RAW
593 select SYS_HAS_CPU_MIPS32_R1
594 select SYS_HAS_CPU_MIPS32_R2
595 select SYS_SUPPORTS_32BIT_KERNEL
596 select SYS_SUPPORTS_BIG_ENDIAN
597 select SYS_SUPPORTS_MIPS16
598 select IRQ_MIPS_CPU
599 select SERIAL_8250
600 select SERIAL_8250_CONSOLE
601 select USB_EHCI_BIG_ENDIAN_MMIO
602 select USB_EHCI_BIG_ENDIAN_DESC
603 help
604 This adds support for the PMC-Sierra family of Multi-Service
605 Processor System-On-A-Chips. These parts include a number
606 of integrated peripherals, interfaces and DSPs in addition to
607 a variety of MIPS cores.
608
609config RALINK
610 bool "Ralink based machines"
611 select CEVT_R4K
612 select CSRC_R4K
613 select BOOT_RAW
614 select DMA_NONCOHERENT
615 select IRQ_MIPS_CPU
616 select USE_OF
617 select SYS_HAS_CPU_MIPS32_R1
618 select SYS_HAS_CPU_MIPS32_R2
619 select SYS_SUPPORTS_32BIT_KERNEL
620 select SYS_SUPPORTS_LITTLE_ENDIAN
621 select SYS_SUPPORTS_MIPS16
622 select SYS_HAS_EARLY_PRINTK
623 select CLKDEV_LOOKUP
624 select ARCH_HAS_RESET_CONTROLLER
625 select RESET_CONTROLLER
626
627config SGI_IP22
628 bool "SGI IP22 (Indy/Indigo2)"
629 select FW_ARC
630 select FW_ARC32
631 select ARCH_MIGHT_HAVE_PC_SERIO
632 select BOOT_ELF32
633 select CEVT_R4K
634 select CSRC_R4K
635 select DEFAULT_SGI_PARTITION
636 select DMA_NONCOHERENT
637 select HW_HAS_EISA
638 select I8253
639 select I8259
640 select IP22_CPU_SCACHE
641 select IRQ_MIPS_CPU
642 select GENERIC_ISA_DMA_SUPPORT_BROKEN
643 select SGI_HAS_I8042
644 select SGI_HAS_INDYDOG
645 select SGI_HAS_HAL2
646 select SGI_HAS_SEEQ
647 select SGI_HAS_WD93
648 select SGI_HAS_ZILOG
649 select SWAP_IO_SPACE
650 select SYS_HAS_CPU_R4X00
651 select SYS_HAS_CPU_R5000
652 #
653 # Disable EARLY_PRINTK for now since it leads to overwritten prom
654 # memory during early boot on some machines.
655 #
656 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
657 # for a more details discussion
658 #
659 # select SYS_HAS_EARLY_PRINTK
660 select SYS_SUPPORTS_32BIT_KERNEL
661 select SYS_SUPPORTS_64BIT_KERNEL
662 select SYS_SUPPORTS_BIG_ENDIAN
663 select MIPS_L1_CACHE_SHIFT_7
664 help
665 This are the SGI Indy, Challenge S and Indigo2, as well as certain
666 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
667 that runs on these, say Y here.
668
669config SGI_IP27
670 bool "SGI IP27 (Origin200/2000)"
671 select ARCH_HAS_PHYS_TO_DMA
672 select FW_ARC
673 select FW_ARC64
674 select BOOT_ELF64
675 select DEFAULT_SGI_PARTITION
676 select SYS_HAS_EARLY_PRINTK
677 select HW_HAS_PCI
678 select NR_CPUS_DEFAULT_64
679 select SYS_HAS_CPU_R10000
680 select SYS_SUPPORTS_64BIT_KERNEL
681 select SYS_SUPPORTS_BIG_ENDIAN
682 select SYS_SUPPORTS_NUMA
683 select SYS_SUPPORTS_SMP
684 select MIPS_L1_CACHE_SHIFT_7
685 help
686 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
687 workstations. To compile a Linux kernel that runs on these, say Y
688 here.
689
690config SGI_IP28
691 bool "SGI IP28 (Indigo2 R10k)"
692 select FW_ARC
693 select FW_ARC64
694 select ARCH_MIGHT_HAVE_PC_SERIO
695 select BOOT_ELF64
696 select CEVT_R4K
697 select CSRC_R4K
698 select DEFAULT_SGI_PARTITION
699 select DMA_NONCOHERENT
700 select GENERIC_ISA_DMA_SUPPORT_BROKEN
701 select IRQ_MIPS_CPU
702 select HW_HAS_EISA
703 select I8253
704 select I8259
705 select SGI_HAS_I8042
706 select SGI_HAS_INDYDOG
707 select SGI_HAS_HAL2
708 select SGI_HAS_SEEQ
709 select SGI_HAS_WD93
710 select SGI_HAS_ZILOG
711 select SWAP_IO_SPACE
712 select SYS_HAS_CPU_R10000
713 #
714 # Disable EARLY_PRINTK for now since it leads to overwritten prom
715 # memory during early boot on some machines.
716 #
717 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
718 # for a more details discussion
719 #
720 # select SYS_HAS_EARLY_PRINTK
721 select SYS_SUPPORTS_64BIT_KERNEL
722 select SYS_SUPPORTS_BIG_ENDIAN
723 select MIPS_L1_CACHE_SHIFT_7
724 help
725 This is the SGI Indigo2 with R10000 processor. To compile a Linux
726 kernel that runs on these, say Y here.
727
728config SGI_IP32
729 bool "SGI IP32 (O2)"
730 select ARCH_HAS_PHYS_TO_DMA
731 select FW_ARC
732 select FW_ARC32
733 select BOOT_ELF32
734 select CEVT_R4K
735 select CSRC_R4K
736 select DMA_NONCOHERENT
737 select HW_HAS_PCI
738 select IRQ_MIPS_CPU
739 select R5000_CPU_SCACHE
740 select RM7000_CPU_SCACHE
741 select SYS_HAS_CPU_R5000
742 select SYS_HAS_CPU_R10000 if BROKEN
743 select SYS_HAS_CPU_RM7000
744 select SYS_HAS_CPU_NEVADA
745 select SYS_SUPPORTS_64BIT_KERNEL
746 select SYS_SUPPORTS_BIG_ENDIAN
747 help
748 If you want this kernel to run on SGI O2 workstation, say Y here.
749
750config SIBYTE_CRHINE
751 bool "Sibyte BCM91120C-CRhine"
752 select BOOT_ELF32
753 select SIBYTE_BCM1120
754 select SWAP_IO_SPACE
755 select SYS_HAS_CPU_SB1
756 select SYS_SUPPORTS_BIG_ENDIAN
757 select SYS_SUPPORTS_LITTLE_ENDIAN
758
759config SIBYTE_CARMEL
760 bool "Sibyte BCM91120x-Carmel"
761 select BOOT_ELF32
762 select SIBYTE_BCM1120
763 select SWAP_IO_SPACE
764 select SYS_HAS_CPU_SB1
765 select SYS_SUPPORTS_BIG_ENDIAN
766 select SYS_SUPPORTS_LITTLE_ENDIAN
767
768config SIBYTE_CRHONE
769 bool "Sibyte BCM91125C-CRhone"
770 select BOOT_ELF32
771 select SIBYTE_BCM1125
772 select SWAP_IO_SPACE
773 select SYS_HAS_CPU_SB1
774 select SYS_SUPPORTS_BIG_ENDIAN
775 select SYS_SUPPORTS_HIGHMEM
776 select SYS_SUPPORTS_LITTLE_ENDIAN
777
778config SIBYTE_RHONE
779 bool "Sibyte BCM91125E-Rhone"
780 select BOOT_ELF32
781 select SIBYTE_BCM1125H
782 select SWAP_IO_SPACE
783 select SYS_HAS_CPU_SB1
784 select SYS_SUPPORTS_BIG_ENDIAN
785 select SYS_SUPPORTS_LITTLE_ENDIAN
786
787config SIBYTE_SWARM
788 bool "Sibyte BCM91250A-SWARM"
789 select BOOT_ELF32
790 select HAVE_PATA_PLATFORM
791 select SIBYTE_SB1250
792 select SWAP_IO_SPACE
793 select SYS_HAS_CPU_SB1
794 select SYS_SUPPORTS_BIG_ENDIAN
795 select SYS_SUPPORTS_HIGHMEM
796 select SYS_SUPPORTS_LITTLE_ENDIAN
797 select ZONE_DMA32 if 64BIT
798 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
799
800config SIBYTE_LITTLESUR
801 bool "Sibyte BCM91250C2-LittleSur"
802 select BOOT_ELF32
803 select HAVE_PATA_PLATFORM
804 select SIBYTE_SB1250
805 select SWAP_IO_SPACE
806 select SYS_HAS_CPU_SB1
807 select SYS_SUPPORTS_BIG_ENDIAN
808 select SYS_SUPPORTS_HIGHMEM
809 select SYS_SUPPORTS_LITTLE_ENDIAN
810 select ZONE_DMA32 if 64BIT
811
812config SIBYTE_SENTOSA
813 bool "Sibyte BCM91250E-Sentosa"
814 select BOOT_ELF32
815 select SIBYTE_SB1250
816 select SWAP_IO_SPACE
817 select SYS_HAS_CPU_SB1
818 select SYS_SUPPORTS_BIG_ENDIAN
819 select SYS_SUPPORTS_LITTLE_ENDIAN
820 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
821
822config SIBYTE_BIGSUR
823 bool "Sibyte BCM91480B-BigSur"
824 select BOOT_ELF32
825 select NR_CPUS_DEFAULT_4
826 select SIBYTE_BCM1x80
827 select SWAP_IO_SPACE
828 select SYS_HAS_CPU_SB1
829 select SYS_SUPPORTS_BIG_ENDIAN
830 select SYS_SUPPORTS_HIGHMEM
831 select SYS_SUPPORTS_LITTLE_ENDIAN
832 select ZONE_DMA32 if 64BIT
833 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
834
835config SNI_RM
836 bool "SNI RM200/300/400"
837 select FW_ARC if CPU_LITTLE_ENDIAN
838 select FW_ARC32 if CPU_LITTLE_ENDIAN
839 select FW_SNIPROM if CPU_BIG_ENDIAN
840 select ARCH_MAY_HAVE_PC_FDC
841 select ARCH_MIGHT_HAVE_PC_PARPORT
842 select ARCH_MIGHT_HAVE_PC_SERIO
843 select BOOT_ELF32
844 select CEVT_R4K
845 select CSRC_R4K
846 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
847 select DMA_NONCOHERENT
848 select GENERIC_ISA_DMA
849 select HAVE_PCSPKR_PLATFORM
850 select HW_HAS_EISA
851 select HW_HAS_PCI
852 select IRQ_MIPS_CPU
853 select I8253
854 select I8259
855 select ISA
856 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
857 select SYS_HAS_CPU_R4X00
858 select SYS_HAS_CPU_R5000
859 select SYS_HAS_CPU_R10000
860 select R5000_CPU_SCACHE
861 select SYS_HAS_EARLY_PRINTK
862 select SYS_SUPPORTS_32BIT_KERNEL
863 select SYS_SUPPORTS_64BIT_KERNEL
864 select SYS_SUPPORTS_BIG_ENDIAN
865 select SYS_SUPPORTS_HIGHMEM
866 select SYS_SUPPORTS_LITTLE_ENDIAN
867 help
868 The SNI RM200/300/400 are MIPS-based machines manufactured by
869 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
870 Technology and now in turn merged with Fujitsu. Say Y here to
871 support this machine type.
872
873config MACH_TX39XX
874 bool "Toshiba TX39 series based machines"
875
876config MACH_TX49XX
877 bool "Toshiba TX49 series based machines"
878
879config MIKROTIK_RB532
880 bool "Mikrotik RB532 boards"
881 select CEVT_R4K
882 select CSRC_R4K
883 select DMA_NONCOHERENT
884 select HW_HAS_PCI
885 select IRQ_MIPS_CPU
886 select SYS_HAS_CPU_MIPS32_R1
887 select SYS_SUPPORTS_32BIT_KERNEL
888 select SYS_SUPPORTS_LITTLE_ENDIAN
889 select SWAP_IO_SPACE
890 select BOOT_RAW
891 select GPIOLIB
892 select MIPS_L1_CACHE_SHIFT_4
893 help
894 Support the Mikrotik(tm) RouterBoard 532 series,
895 based on the IDT RC32434 SoC.
896
897config CAVIUM_OCTEON_SOC
898 bool "Cavium Networks Octeon SoC based boards"
899 select CEVT_R4K
900 select ARCH_HAS_PHYS_TO_DMA
901 select HAS_RAPIDIO
902 select PHYS_ADDR_T_64BIT
903 select SYS_SUPPORTS_64BIT_KERNEL
904 select SYS_SUPPORTS_BIG_ENDIAN
905 select EDAC_SUPPORT
906 select EDAC_ATOMIC_SCRUB
907 select SYS_SUPPORTS_LITTLE_ENDIAN
908 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
909 select SYS_HAS_EARLY_PRINTK
910 select SYS_HAS_CPU_CAVIUM_OCTEON
911 select HW_HAS_PCI
912 select ZONE_DMA32
913 select HOLES_IN_ZONE
914 select GPIOLIB
915 select LIBFDT
916 select USE_OF
917 select ARCH_SPARSEMEM_ENABLE
918 select SYS_SUPPORTS_SMP
919 select NR_CPUS_DEFAULT_64
920 select MIPS_NR_CPU_NR_MAP_1024
921 select BUILTIN_DTB
922 select MTD_COMPLEX_MAPPINGS
923 select SWIOTLB
924 select SYS_SUPPORTS_RELOCATABLE
925 help
926 This option supports all of the Octeon reference boards from Cavium
927 Networks. It builds a kernel that dynamically determines the Octeon
928 CPU type and supports all known board reference implementations.
929 Some of the supported boards are:
930 EBT3000
931 EBH3000
932 EBH3100
933 Thunder
934 Kodama
935 Hikari
936 Say Y here for most Octeon reference boards.
937
938config NLM_XLR_BOARD
939 bool "Netlogic XLR/XLS based systems"
940 select BOOT_ELF32
941 select NLM_COMMON
942 select SYS_HAS_CPU_XLR
943 select SYS_SUPPORTS_SMP
944 select HW_HAS_PCI
945 select SWAP_IO_SPACE
946 select SYS_SUPPORTS_32BIT_KERNEL
947 select SYS_SUPPORTS_64BIT_KERNEL
948 select PHYS_ADDR_T_64BIT
949 select SYS_SUPPORTS_BIG_ENDIAN
950 select SYS_SUPPORTS_HIGHMEM
951 select NR_CPUS_DEFAULT_32
952 select CEVT_R4K
953 select CSRC_R4K
954 select IRQ_MIPS_CPU
955 select ZONE_DMA32 if 64BIT
956 select SYNC_R4K
957 select SYS_HAS_EARLY_PRINTK
958 select SYS_SUPPORTS_ZBOOT
959 select SYS_SUPPORTS_ZBOOT_UART16550
960 help
961 Support for systems based on Netlogic XLR and XLS processors.
962 Say Y here if you have a XLR or XLS based board.
963
964config NLM_XLP_BOARD
965 bool "Netlogic XLP based systems"
966 select BOOT_ELF32
967 select NLM_COMMON
968 select SYS_HAS_CPU_XLP
969 select SYS_SUPPORTS_SMP
970 select HW_HAS_PCI
971 select SYS_SUPPORTS_32BIT_KERNEL
972 select SYS_SUPPORTS_64BIT_KERNEL
973 select PHYS_ADDR_T_64BIT
974 select GPIOLIB
975 select SYS_SUPPORTS_BIG_ENDIAN
976 select SYS_SUPPORTS_LITTLE_ENDIAN
977 select SYS_SUPPORTS_HIGHMEM
978 select NR_CPUS_DEFAULT_32
979 select CEVT_R4K
980 select CSRC_R4K
981 select IRQ_MIPS_CPU
982 select ZONE_DMA32 if 64BIT
983 select SYNC_R4K
984 select SYS_HAS_EARLY_PRINTK
985 select USE_OF
986 select SYS_SUPPORTS_ZBOOT
987 select SYS_SUPPORTS_ZBOOT_UART16550
988 help
989 This board is based on Netlogic XLP Processor.
990 Say Y here if you have a XLP based board.
991
992config MIPS_PARAVIRT
993 bool "Para-Virtualized guest system"
994 select CEVT_R4K
995 select CSRC_R4K
996 select SYS_SUPPORTS_64BIT_KERNEL
997 select SYS_SUPPORTS_32BIT_KERNEL
998 select SYS_SUPPORTS_BIG_ENDIAN
999 select SYS_SUPPORTS_SMP
1000 select NR_CPUS_DEFAULT_4
1001 select SYS_HAS_EARLY_PRINTK
1002 select SYS_HAS_CPU_MIPS32_R2
1003 select SYS_HAS_CPU_MIPS64_R2
1004 select SYS_HAS_CPU_CAVIUM_OCTEON
1005 select HW_HAS_PCI
1006 select SWAP_IO_SPACE
1007 help
1008 This option supports guest running under ????
1009
1010endchoice
1011
1012source "arch/mips/alchemy/Kconfig"
1013source "arch/mips/ath25/Kconfig"
1014source "arch/mips/ath79/Kconfig"
1015source "arch/mips/bcm47xx/Kconfig"
1016source "arch/mips/bcm63xx/Kconfig"
1017source "arch/mips/bmips/Kconfig"
1018source "arch/mips/generic/Kconfig"
1019source "arch/mips/jazz/Kconfig"
1020source "arch/mips/jz4740/Kconfig"
1021source "arch/mips/lantiq/Kconfig"
1022source "arch/mips/lasat/Kconfig"
1023source "arch/mips/pic32/Kconfig"
1024source "arch/mips/pistachio/Kconfig"
1025source "arch/mips/pmcs-msp71xx/Kconfig"
1026source "arch/mips/ralink/Kconfig"
1027source "arch/mips/sgi-ip27/Kconfig"
1028source "arch/mips/sibyte/Kconfig"
1029source "arch/mips/txx9/Kconfig"
1030source "arch/mips/vr41xx/Kconfig"
1031source "arch/mips/cavium-octeon/Kconfig"
1032source "arch/mips/loongson32/Kconfig"
1033source "arch/mips/loongson64/Kconfig"
1034source "arch/mips/netlogic/Kconfig"
1035source "arch/mips/paravirt/Kconfig"
1036
1037endmenu
1038
1039config RWSEM_GENERIC_SPINLOCK
1040 bool
1041 default y
1042
1043config RWSEM_XCHGADD_ALGORITHM
1044 bool
1045
1046config GENERIC_HWEIGHT
1047 bool
1048 default y
1049
1050config GENERIC_CALIBRATE_DELAY
1051 bool
1052 default y
1053
1054config SCHED_OMIT_FRAME_POINTER
1055 bool
1056 default y
1057
1058#
1059# Select some configuration options automatically based on user selections.
1060#
1061config FW_ARC
1062 bool
1063
1064config ARCH_MAY_HAVE_PC_FDC
1065 bool
1066
1067config CEVT_BCM1480
1068 bool
1069
1070config CEVT_DS1287
1071 bool
1072
1073config CEVT_GT641XX
1074 bool
1075
1076config CEVT_R4K
1077 bool
1078
1079config CEVT_SB1250
1080 bool
1081
1082config CEVT_TXX9
1083 bool
1084
1085config CSRC_BCM1480
1086 bool
1087
1088config CSRC_IOASIC
1089 bool
1090
1091config CSRC_R4K
1092 bool
1093
1094config CSRC_SB1250
1095 bool
1096
1097config MIPS_CLOCK_VSYSCALL
1098 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1099
1100config GPIO_TXX9
1101 select GPIOLIB
1102 bool
1103
1104config FW_CFE
1105 bool
1106
1107config ARCH_SUPPORTS_UPROBES
1108 bool
1109
1110config DMA_MAYBE_COHERENT
1111 select DMA_NONCOHERENT
1112 bool
1113
1114config DMA_PERDEV_COHERENT
1115 bool
1116 select DMA_MAYBE_COHERENT
1117
1118config DMA_NONCOHERENT
1119 bool
1120 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1121 select NEED_DMA_MAP_STATE
1122 select DMA_NONCOHERENT_MMAP
1123 select DMA_NONCOHERENT_CACHE_SYNC
1124 select DMA_NONCOHERENT_OPS
1125
1126config SYS_HAS_EARLY_PRINTK
1127 bool
1128
1129config SYS_SUPPORTS_HOTPLUG_CPU
1130 bool
1131
1132config MIPS_BONITO64
1133 bool
1134
1135config MIPS_MSC
1136 bool
1137
1138config MIPS_NILE4
1139 bool
1140
1141config SYNC_R4K
1142 bool
1143
1144config MIPS_MACHINE
1145 def_bool n
1146
1147config IMAGE_CMDLINE_HACK
1148 bool "OpenWrt specific image command line hack"
1149 default n
1150
1151config NO_IOPORT_MAP
1152 def_bool n
1153
1154config GENERIC_CSUM
1155 bool
1156
1157config GENERIC_ISA_DMA
1158 bool
1159 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1160 select ISA_DMA_API
1161
1162config GENERIC_ISA_DMA_SUPPORT_BROKEN
1163 bool
1164 select GENERIC_ISA_DMA
1165
1166config ISA_DMA_API
1167 bool
1168
1169config HOLES_IN_ZONE
1170 bool
1171
1172config SYS_SUPPORTS_RELOCATABLE
1173 bool
1174 help
1175 Selected if the platform supports relocating the kernel.
1176 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1177 to allow access to command line and entropy sources.
1178
1179config MIPS_CBPF_JIT
1180 def_bool y
1181 depends on BPF_JIT && HAVE_CBPF_JIT
1182
1183config MIPS_EBPF_JIT
1184 def_bool y
1185 depends on BPF_JIT && HAVE_EBPF_JIT
1186
1187
1188#
1189# Endianness selection. Sufficiently obscure so many users don't know what to
1190# answer,so we try hard to limit the available choices. Also the use of a
1191# choice statement should be more obvious to the user.
1192#
1193choice
1194 prompt "Endianness selection"
1195 help
1196 Some MIPS machines can be configured for either little or big endian
1197 byte order. These modes require different kernels and a different
1198 Linux distribution. In general there is one preferred byteorder for a
1199 particular system but some systems are just as commonly used in the
1200 one or the other endianness.
1201
1202config CPU_BIG_ENDIAN
1203 bool "Big endian"
1204 depends on SYS_SUPPORTS_BIG_ENDIAN
1205
1206config CPU_LITTLE_ENDIAN
1207 bool "Little endian"
1208 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1209
1210endchoice
1211
1212config EXPORT_UASM
1213 bool
1214
1215config SYS_SUPPORTS_APM_EMULATION
1216 bool
1217
1218config SYS_SUPPORTS_BIG_ENDIAN
1219 bool
1220
1221config SYS_SUPPORTS_LITTLE_ENDIAN
1222 bool
1223
1224config SYS_SUPPORTS_HUGETLBFS
1225 bool
1226 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1227 default y
1228
1229config MIPS_HUGE_TLB_SUPPORT
1230 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1231
1232config IRQ_CPU_RM7K
1233 bool
1234
1235config IRQ_MSP_SLP
1236 bool
1237
1238config IRQ_MSP_CIC
1239 bool
1240
1241config IRQ_TXX9
1242 bool
1243
1244config IRQ_GT641XX
1245 bool
1246
1247config PCI_GT64XXX_PCI0
1248 bool
1249
1250config NO_EXCEPT_FILL
1251 bool
1252
1253config SOC_EMMA2RH
1254 bool
1255 select CEVT_R4K
1256 select CSRC_R4K
1257 select DMA_NONCOHERENT
1258 select IRQ_MIPS_CPU
1259 select SWAP_IO_SPACE
1260 select SYS_HAS_CPU_R5500
1261 select SYS_SUPPORTS_32BIT_KERNEL
1262 select SYS_SUPPORTS_64BIT_KERNEL
1263 select SYS_SUPPORTS_BIG_ENDIAN
1264
1265config SOC_PNX833X
1266 bool
1267 select CEVT_R4K
1268 select CSRC_R4K
1269 select IRQ_MIPS_CPU
1270 select DMA_NONCOHERENT
1271 select SYS_HAS_CPU_MIPS32_R2
1272 select SYS_SUPPORTS_32BIT_KERNEL
1273 select SYS_SUPPORTS_LITTLE_ENDIAN
1274 select SYS_SUPPORTS_BIG_ENDIAN
1275 select SYS_SUPPORTS_MIPS16
1276 select CPU_MIPSR2_IRQ_VI
1277
1278config SOC_PNX8335
1279 bool
1280 select SOC_PNX833X
1281
1282config MIPS_SPRAM
1283 bool
1284
1285config SWAP_IO_SPACE
1286 bool
1287
1288config SGI_HAS_INDYDOG
1289 bool
1290
1291config SGI_HAS_HAL2
1292 bool
1293
1294config SGI_HAS_SEEQ
1295 bool
1296
1297config SGI_HAS_WD93
1298 bool
1299
1300config SGI_HAS_ZILOG
1301 bool
1302
1303config SGI_HAS_I8042
1304 bool
1305
1306config DEFAULT_SGI_PARTITION
1307 bool
1308
1309config FW_ARC32
1310 bool
1311
1312config FW_SNIPROM
1313 bool
1314
1315config BOOT_ELF32
1316 bool
1317
1318config MIPS_L1_CACHE_SHIFT_4
1319 bool
1320
1321config MIPS_L1_CACHE_SHIFT_5
1322 bool
1323
1324config MIPS_L1_CACHE_SHIFT_6
1325 bool
1326
1327config MIPS_L1_CACHE_SHIFT_7
1328 bool
1329
1330config MIPS_L1_CACHE_SHIFT
1331 int
1332 default "7" if MIPS_L1_CACHE_SHIFT_7
1333 default "6" if MIPS_L1_CACHE_SHIFT_6
1334 default "5" if MIPS_L1_CACHE_SHIFT_5
1335 default "4" if MIPS_L1_CACHE_SHIFT_4
1336 default "5"
1337
1338config HAVE_STD_PC_SERIAL_PORT
1339 bool
1340
1341config ARC_CONSOLE
1342 bool "ARC console support"
1343 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1344
1345config ARC_MEMORY
1346 bool
1347 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1348 default y
1349
1350config ARC_PROMLIB
1351 bool
1352 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1353 default y
1354
1355config FW_ARC64
1356 bool
1357
1358config BOOT_ELF64
1359 bool
1360
1361menu "CPU selection"
1362
1363choice
1364 prompt "CPU type"
1365 default CPU_R4X00
1366
1367config CPU_LOONGSON3
1368 bool "Loongson 3 CPU"
1369 depends on SYS_HAS_CPU_LOONGSON3
1370 select ARCH_HAS_PHYS_TO_DMA
1371 select CPU_SUPPORTS_64BIT_KERNEL
1372 select CPU_SUPPORTS_HIGHMEM
1373 select CPU_SUPPORTS_HUGEPAGES
1374 select WEAK_ORDERING
1375 select WEAK_REORDERING_BEYOND_LLSC
1376 select MIPS_PGD_C0_CONTEXT
1377 select MIPS_L1_CACHE_SHIFT_6
1378 select GPIOLIB
1379 select SWIOTLB
1380 help
1381 The Loongson 3 processor implements the MIPS64R2 instruction
1382 set with many extensions.
1383
1384config LOONGSON3_ENHANCEMENT
1385 bool "New Loongson 3 CPU Enhancements"
1386 default n
1387 select CPU_MIPSR2
1388 select CPU_HAS_PREFETCH
1389 depends on CPU_LOONGSON3
1390 help
1391 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1392 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1393 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1394 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1395 Fast TLB refill support, etc.
1396
1397 This option enable those enhancements which are not probed at run
1398 time. If you want a generic kernel to run on all Loongson 3 machines,
1399 please say 'N' here. If you want a high-performance kernel to run on
1400 new Loongson 3 machines only, please say 'Y' here.
1401
1402config CPU_LOONGSON2E
1403 bool "Loongson 2E"
1404 depends on SYS_HAS_CPU_LOONGSON2E
1405 select CPU_LOONGSON2
1406 help
1407 The Loongson 2E processor implements the MIPS III instruction set
1408 with many extensions.
1409
1410 It has an internal FPGA northbridge, which is compatible to
1411 bonito64.
1412
1413config CPU_LOONGSON2F
1414 bool "Loongson 2F"
1415 depends on SYS_HAS_CPU_LOONGSON2F
1416 select CPU_LOONGSON2
1417 select GPIOLIB
1418 help
1419 The Loongson 2F processor implements the MIPS III instruction set
1420 with many extensions.
1421
1422 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1423 have a similar programming interface with FPGA northbridge used in
1424 Loongson2E.
1425
1426config CPU_LOONGSON1B
1427 bool "Loongson 1B"
1428 depends on SYS_HAS_CPU_LOONGSON1B
1429 select CPU_LOONGSON1
1430 select LEDS_GPIO_REGISTER
1431 help
1432 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1433 Release 1 instruction set and part of the MIPS32 Release 2
1434 instruction set.
1435
1436config CPU_LOONGSON1C
1437 bool "Loongson 1C"
1438 depends on SYS_HAS_CPU_LOONGSON1C
1439 select CPU_LOONGSON1
1440 select LEDS_GPIO_REGISTER
1441 help
1442 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1443 Release 1 instruction set and part of the MIPS32 Release 2
1444 instruction set.
1445
1446config CPU_MIPS32_R1
1447 bool "MIPS32 Release 1"
1448 depends on SYS_HAS_CPU_MIPS32_R1
1449 select CPU_HAS_PREFETCH
1450 select CPU_SUPPORTS_32BIT_KERNEL
1451 select CPU_SUPPORTS_HIGHMEM
1452 help
1453 Choose this option to build a kernel for release 1 or later of the
1454 MIPS32 architecture. Most modern embedded systems with a 32-bit
1455 MIPS processor are based on a MIPS32 processor. If you know the
1456 specific type of processor in your system, choose those that one
1457 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1458 Release 2 of the MIPS32 architecture is available since several
1459 years so chances are you even have a MIPS32 Release 2 processor
1460 in which case you should choose CPU_MIPS32_R2 instead for better
1461 performance.
1462
1463config CPU_MIPS32_R2
1464 bool "MIPS32 Release 2"
1465 depends on SYS_HAS_CPU_MIPS32_R2
1466 select CPU_HAS_PREFETCH
1467 select CPU_SUPPORTS_32BIT_KERNEL
1468 select CPU_SUPPORTS_HIGHMEM
1469 select CPU_SUPPORTS_MSA
1470 select HAVE_KVM
1471 help
1472 Choose this option to build a kernel for release 2 or later of the
1473 MIPS32 architecture. Most modern embedded systems with a 32-bit
1474 MIPS processor are based on a MIPS32 processor. If you know the
1475 specific type of processor in your system, choose those that one
1476 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1477
1478config CPU_MIPS32_R6
1479 bool "MIPS32 Release 6"
1480 depends on SYS_HAS_CPU_MIPS32_R6
1481 select CPU_HAS_PREFETCH
1482 select CPU_SUPPORTS_32BIT_KERNEL
1483 select CPU_SUPPORTS_HIGHMEM
1484 select CPU_SUPPORTS_MSA
1485 select GENERIC_CSUM
1486 select HAVE_KVM
1487 select MIPS_O32_FP64_SUPPORT
1488 help
1489 Choose this option to build a kernel for release 6 or later of the
1490 MIPS32 architecture. New MIPS processors, starting with the Warrior
1491 family, are based on a MIPS32r6 processor. If you own an older
1492 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1493
1494config CPU_MIPS64_R1
1495 bool "MIPS64 Release 1"
1496 depends on SYS_HAS_CPU_MIPS64_R1
1497 select CPU_HAS_PREFETCH
1498 select CPU_SUPPORTS_32BIT_KERNEL
1499 select CPU_SUPPORTS_64BIT_KERNEL
1500 select CPU_SUPPORTS_HIGHMEM
1501 select CPU_SUPPORTS_HUGEPAGES
1502 help
1503 Choose this option to build a kernel for release 1 or later of the
1504 MIPS64 architecture. Many modern embedded systems with a 64-bit
1505 MIPS processor are based on a MIPS64 processor. If you know the
1506 specific type of processor in your system, choose those that one
1507 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1508 Release 2 of the MIPS64 architecture is available since several
1509 years so chances are you even have a MIPS64 Release 2 processor
1510 in which case you should choose CPU_MIPS64_R2 instead for better
1511 performance.
1512
1513config CPU_MIPS64_R2
1514 bool "MIPS64 Release 2"
1515 depends on SYS_HAS_CPU_MIPS64_R2
1516 select CPU_HAS_PREFETCH
1517 select CPU_SUPPORTS_32BIT_KERNEL
1518 select CPU_SUPPORTS_64BIT_KERNEL
1519 select CPU_SUPPORTS_HIGHMEM
1520 select CPU_SUPPORTS_HUGEPAGES
1521 select CPU_SUPPORTS_MSA
1522 select HAVE_KVM
1523 help
1524 Choose this option to build a kernel for release 2 or later of the
1525 MIPS64 architecture. Many modern embedded systems with a 64-bit
1526 MIPS processor are based on a MIPS64 processor. If you know the
1527 specific type of processor in your system, choose those that one
1528 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1529
1530config CPU_MIPS64_R6
1531 bool "MIPS64 Release 6"
1532 depends on SYS_HAS_CPU_MIPS64_R6
1533 select CPU_HAS_PREFETCH
1534 select CPU_SUPPORTS_32BIT_KERNEL
1535 select CPU_SUPPORTS_64BIT_KERNEL
1536 select CPU_SUPPORTS_HIGHMEM
1537 select CPU_SUPPORTS_MSA
1538 select GENERIC_CSUM
1539 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1540 select HAVE_KVM
1541 help
1542 Choose this option to build a kernel for release 6 or later of the
1543 MIPS64 architecture. New MIPS processors, starting with the Warrior
1544 family, are based on a MIPS64r6 processor. If you own an older
1545 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1546
1547config CPU_R3000
1548 bool "R3000"
1549 depends on SYS_HAS_CPU_R3000
1550 select CPU_HAS_WB
1551 select CPU_SUPPORTS_32BIT_KERNEL
1552 select CPU_SUPPORTS_HIGHMEM
1553 help
1554 Please make sure to pick the right CPU type. Linux/MIPS is not
1555 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1556 *not* work on R4000 machines and vice versa. However, since most
1557 of the supported machines have an R4000 (or similar) CPU, R4x00
1558 might be a safe bet. If the resulting kernel does not work,
1559 try to recompile with R3000.
1560
1561config CPU_TX39XX
1562 bool "R39XX"
1563 depends on SYS_HAS_CPU_TX39XX
1564 select CPU_SUPPORTS_32BIT_KERNEL
1565
1566config CPU_VR41XX
1567 bool "R41xx"
1568 depends on SYS_HAS_CPU_VR41XX
1569 select CPU_SUPPORTS_32BIT_KERNEL
1570 select CPU_SUPPORTS_64BIT_KERNEL
1571 help
1572 The options selects support for the NEC VR4100 series of processors.
1573 Only choose this option if you have one of these processors as a
1574 kernel built with this option will not run on any other type of
1575 processor or vice versa.
1576
1577config CPU_R4300
1578 bool "R4300"
1579 depends on SYS_HAS_CPU_R4300
1580 select CPU_SUPPORTS_32BIT_KERNEL
1581 select CPU_SUPPORTS_64BIT_KERNEL
1582 help
1583 MIPS Technologies R4300-series processors.
1584
1585config CPU_R4X00
1586 bool "R4x00"
1587 depends on SYS_HAS_CPU_R4X00
1588 select CPU_SUPPORTS_32BIT_KERNEL
1589 select CPU_SUPPORTS_64BIT_KERNEL
1590 select CPU_SUPPORTS_HUGEPAGES
1591 help
1592 MIPS Technologies R4000-series processors other than 4300, including
1593 the R4000, R4400, R4600, and 4700.
1594
1595config CPU_TX49XX
1596 bool "R49XX"
1597 depends on SYS_HAS_CPU_TX49XX
1598 select CPU_HAS_PREFETCH
1599 select CPU_SUPPORTS_32BIT_KERNEL
1600 select CPU_SUPPORTS_64BIT_KERNEL
1601 select CPU_SUPPORTS_HUGEPAGES
1602
1603config CPU_R5000
1604 bool "R5000"
1605 depends on SYS_HAS_CPU_R5000
1606 select CPU_SUPPORTS_32BIT_KERNEL
1607 select CPU_SUPPORTS_64BIT_KERNEL
1608 select CPU_SUPPORTS_HUGEPAGES
1609 help
1610 MIPS Technologies R5000-series processors other than the Nevada.
1611
1612config CPU_R5432
1613 bool "R5432"
1614 depends on SYS_HAS_CPU_R5432
1615 select CPU_SUPPORTS_32BIT_KERNEL
1616 select CPU_SUPPORTS_64BIT_KERNEL
1617 select CPU_SUPPORTS_HUGEPAGES
1618
1619config CPU_R5500
1620 bool "R5500"
1621 depends on SYS_HAS_CPU_R5500
1622 select CPU_SUPPORTS_32BIT_KERNEL
1623 select CPU_SUPPORTS_64BIT_KERNEL
1624 select CPU_SUPPORTS_HUGEPAGES
1625 help
1626 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1627 instruction set.
1628
1629config CPU_NEVADA
1630 bool "RM52xx"
1631 depends on SYS_HAS_CPU_NEVADA
1632 select CPU_SUPPORTS_32BIT_KERNEL
1633 select CPU_SUPPORTS_64BIT_KERNEL
1634 select CPU_SUPPORTS_HUGEPAGES
1635 help
1636 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1637
1638config CPU_R8000
1639 bool "R8000"
1640 depends on SYS_HAS_CPU_R8000
1641 select CPU_HAS_PREFETCH
1642 select CPU_SUPPORTS_64BIT_KERNEL
1643 help
1644 MIPS Technologies R8000 processors. Note these processors are
1645 uncommon and the support for them is incomplete.
1646
1647config CPU_R10000
1648 bool "R10000"
1649 depends on SYS_HAS_CPU_R10000
1650 select CPU_HAS_PREFETCH
1651 select CPU_SUPPORTS_32BIT_KERNEL
1652 select CPU_SUPPORTS_64BIT_KERNEL
1653 select CPU_SUPPORTS_HIGHMEM
1654 select CPU_SUPPORTS_HUGEPAGES
1655 help
1656 MIPS Technologies R10000-series processors.
1657
1658config CPU_RM7000
1659 bool "RM7000"
1660 depends on SYS_HAS_CPU_RM7000
1661 select CPU_HAS_PREFETCH
1662 select CPU_SUPPORTS_32BIT_KERNEL
1663 select CPU_SUPPORTS_64BIT_KERNEL
1664 select CPU_SUPPORTS_HIGHMEM
1665 select CPU_SUPPORTS_HUGEPAGES
1666
1667config CPU_SB1
1668 bool "SB1"
1669 depends on SYS_HAS_CPU_SB1
1670 select CPU_SUPPORTS_32BIT_KERNEL
1671 select CPU_SUPPORTS_64BIT_KERNEL
1672 select CPU_SUPPORTS_HIGHMEM
1673 select CPU_SUPPORTS_HUGEPAGES
1674 select WEAK_ORDERING
1675
1676config CPU_CAVIUM_OCTEON
1677 bool "Cavium Octeon processor"
1678 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1679 select CPU_HAS_PREFETCH
1680 select CPU_SUPPORTS_64BIT_KERNEL
1681 select WEAK_ORDERING
1682 select CPU_SUPPORTS_HIGHMEM
1683 select CPU_SUPPORTS_HUGEPAGES
1684 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1685 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1686 select MIPS_L1_CACHE_SHIFT_7
1687 select HAVE_KVM
1688 help
1689 The Cavium Octeon processor is a highly integrated chip containing
1690 many ethernet hardware widgets for networking tasks. The processor
1691 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1692 Full details can be found at http://www.caviumnetworks.com.
1693
1694config CPU_BMIPS
1695 bool "Broadcom BMIPS"
1696 depends on SYS_HAS_CPU_BMIPS
1697 select CPU_MIPS32
1698 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1699 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1700 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1701 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1702 select CPU_SUPPORTS_32BIT_KERNEL
1703 select DMA_NONCOHERENT
1704 select IRQ_MIPS_CPU
1705 select SWAP_IO_SPACE
1706 select WEAK_ORDERING
1707 select CPU_SUPPORTS_HIGHMEM
1708 select CPU_HAS_PREFETCH
1709 select CPU_SUPPORTS_CPUFREQ
1710 select MIPS_EXTERNAL_TIMER
1711 help
1712 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1713
1714config CPU_XLR
1715 bool "Netlogic XLR SoC"
1716 depends on SYS_HAS_CPU_XLR
1717 select CPU_SUPPORTS_32BIT_KERNEL
1718 select CPU_SUPPORTS_64BIT_KERNEL
1719 select CPU_SUPPORTS_HIGHMEM
1720 select CPU_SUPPORTS_HUGEPAGES
1721 select WEAK_ORDERING
1722 select WEAK_REORDERING_BEYOND_LLSC
1723 help
1724 Netlogic Microsystems XLR/XLS processors.
1725
1726config CPU_XLP
1727 bool "Netlogic XLP SoC"
1728 depends on SYS_HAS_CPU_XLP
1729 select CPU_SUPPORTS_32BIT_KERNEL
1730 select CPU_SUPPORTS_64BIT_KERNEL
1731 select CPU_SUPPORTS_HIGHMEM
1732 select WEAK_ORDERING
1733 select WEAK_REORDERING_BEYOND_LLSC
1734 select CPU_HAS_PREFETCH
1735 select CPU_MIPSR2
1736 select CPU_SUPPORTS_HUGEPAGES
1737 select MIPS_ASID_BITS_VARIABLE
1738 help
1739 Netlogic Microsystems XLP processors.
1740endchoice
1741
1742config CPU_MIPS32_3_5_FEATURES
1743 bool "MIPS32 Release 3.5 Features"
1744 depends on SYS_HAS_CPU_MIPS32_R3_5
1745 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1746 help
1747 Choose this option to build a kernel for release 2 or later of the
1748 MIPS32 architecture including features from the 3.5 release such as
1749 support for Enhanced Virtual Addressing (EVA).
1750
1751config CPU_MIPS32_3_5_EVA
1752 bool "Enhanced Virtual Addressing (EVA)"
1753 depends on CPU_MIPS32_3_5_FEATURES
1754 select EVA
1755 default y
1756 help
1757 Choose this option if you want to enable the Enhanced Virtual
1758 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1759 One of its primary benefits is an increase in the maximum size
1760 of lowmem (up to 3GB). If unsure, say 'N' here.
1761
1762config CPU_MIPS32_R5_FEATURES
1763 bool "MIPS32 Release 5 Features"
1764 depends on SYS_HAS_CPU_MIPS32_R5
1765 depends on CPU_MIPS32_R2
1766 help
1767 Choose this option to build a kernel for release 2 or later of the
1768 MIPS32 architecture including features from release 5 such as
1769 support for Extended Physical Addressing (XPA).
1770
1771config CPU_MIPS32_R5_XPA
1772 bool "Extended Physical Addressing (XPA)"
1773 depends on CPU_MIPS32_R5_FEATURES
1774 depends on !EVA
1775 depends on !PAGE_SIZE_4KB
1776 depends on SYS_SUPPORTS_HIGHMEM
1777 select XPA
1778 select HIGHMEM
1779 select PHYS_ADDR_T_64BIT
1780 default n
1781 help
1782 Choose this option if you want to enable the Extended Physical
1783 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1784 benefit is to increase physical addressing equal to or greater
1785 than 40 bits. Note that this has the side effect of turning on
1786 64-bit addressing which in turn makes the PTEs 64-bit in size.
1787 If unsure, say 'N' here.
1788
1789if CPU_LOONGSON2F
1790config CPU_NOP_WORKAROUNDS
1791 bool
1792
1793config CPU_JUMP_WORKAROUNDS
1794 bool
1795
1796config CPU_LOONGSON2F_WORKAROUNDS
1797 bool "Loongson 2F Workarounds"
1798 default y
1799 select CPU_NOP_WORKAROUNDS
1800 select CPU_JUMP_WORKAROUNDS
1801 help
1802 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1803 require workarounds. Without workarounds the system may hang
1804 unexpectedly. For more information please refer to the gas
1805 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1806
1807 Loongson 2F03 and later have fixed these issues and no workarounds
1808 are needed. The workarounds have no significant side effect on them
1809 but may decrease the performance of the system so this option should
1810 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1811 systems.
1812
1813 If unsure, please say Y.
1814endif # CPU_LOONGSON2F
1815
1816config SYS_SUPPORTS_ZBOOT
1817 bool
1818 select HAVE_KERNEL_GZIP
1819 select HAVE_KERNEL_BZIP2
1820 select HAVE_KERNEL_LZ4
1821 select HAVE_KERNEL_LZMA
1822 select HAVE_KERNEL_LZO
1823 select HAVE_KERNEL_XZ
1824
1825config SYS_SUPPORTS_ZBOOT_UART16550
1826 bool
1827 select SYS_SUPPORTS_ZBOOT
1828
1829config SYS_SUPPORTS_ZBOOT_UART_PROM
1830 bool
1831 select SYS_SUPPORTS_ZBOOT
1832
1833config CPU_LOONGSON2
1834 bool
1835 select CPU_SUPPORTS_32BIT_KERNEL
1836 select CPU_SUPPORTS_64BIT_KERNEL
1837 select CPU_SUPPORTS_HIGHMEM
1838 select CPU_SUPPORTS_HUGEPAGES
1839 select ARCH_HAS_PHYS_TO_DMA
1840
1841config CPU_LOONGSON1
1842 bool
1843 select CPU_MIPS32
1844 select CPU_MIPSR1
1845 select CPU_HAS_PREFETCH
1846 select CPU_SUPPORTS_32BIT_KERNEL
1847 select CPU_SUPPORTS_HIGHMEM
1848 select CPU_SUPPORTS_CPUFREQ
1849
1850config CPU_BMIPS32_3300
1851 select SMP_UP if SMP
1852 bool
1853
1854config CPU_BMIPS4350
1855 bool
1856 select SYS_SUPPORTS_SMP
1857 select SYS_SUPPORTS_HOTPLUG_CPU
1858
1859config CPU_BMIPS4380
1860 bool
1861 select MIPS_L1_CACHE_SHIFT_6
1862 select SYS_SUPPORTS_SMP
1863 select SYS_SUPPORTS_HOTPLUG_CPU
1864 select CPU_HAS_RIXI
1865
1866config CPU_BMIPS5000
1867 bool
1868 select MIPS_CPU_SCACHE
1869 select MIPS_L1_CACHE_SHIFT_7
1870 select SYS_SUPPORTS_SMP
1871 select SYS_SUPPORTS_HOTPLUG_CPU
1872 select CPU_HAS_RIXI
1873
1874config SYS_HAS_CPU_LOONGSON3
1875 bool
1876 select CPU_SUPPORTS_CPUFREQ
1877 select CPU_HAS_RIXI
1878
1879config SYS_HAS_CPU_LOONGSON2E
1880 bool
1881
1882config SYS_HAS_CPU_LOONGSON2F
1883 bool
1884 select CPU_SUPPORTS_CPUFREQ
1885 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1886 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1887
1888config SYS_HAS_CPU_LOONGSON1B
1889 bool
1890
1891config SYS_HAS_CPU_LOONGSON1C
1892 bool
1893
1894config SYS_HAS_CPU_MIPS32_R1
1895 bool
1896
1897config SYS_HAS_CPU_MIPS32_R2
1898 bool
1899
1900config SYS_HAS_CPU_MIPS32_R3_5
1901 bool
1902
1903config SYS_HAS_CPU_MIPS32_R5
1904 bool
1905 select ARCH_HAS_SYNC_DMA_FOR_CPU
1906
1907config SYS_HAS_CPU_MIPS32_R6
1908 bool
1909 select ARCH_HAS_SYNC_DMA_FOR_CPU
1910
1911config SYS_HAS_CPU_MIPS64_R1
1912 bool
1913
1914config SYS_HAS_CPU_MIPS64_R2
1915 bool
1916
1917config SYS_HAS_CPU_MIPS64_R6
1918 bool
1919 select ARCH_HAS_SYNC_DMA_FOR_CPU
1920
1921config SYS_HAS_CPU_R3000
1922 bool
1923
1924config SYS_HAS_CPU_TX39XX
1925 bool
1926
1927config SYS_HAS_CPU_VR41XX
1928 bool
1929
1930config SYS_HAS_CPU_R4300
1931 bool
1932
1933config SYS_HAS_CPU_R4X00
1934 bool
1935
1936config SYS_HAS_CPU_TX49XX
1937 bool
1938
1939config SYS_HAS_CPU_R5000
1940 bool
1941
1942config SYS_HAS_CPU_R5432
1943 bool
1944
1945config SYS_HAS_CPU_R5500
1946 bool
1947
1948config SYS_HAS_CPU_NEVADA
1949 bool
1950
1951config SYS_HAS_CPU_R8000
1952 bool
1953
1954config SYS_HAS_CPU_R10000
1955 bool
1956 select ARCH_HAS_SYNC_DMA_FOR_CPU
1957
1958config SYS_HAS_CPU_RM7000
1959 bool
1960
1961config SYS_HAS_CPU_SB1
1962 bool
1963
1964config SYS_HAS_CPU_CAVIUM_OCTEON
1965 bool
1966
1967config SYS_HAS_CPU_BMIPS
1968 bool
1969
1970config SYS_HAS_CPU_BMIPS32_3300
1971 bool
1972 select SYS_HAS_CPU_BMIPS
1973
1974config SYS_HAS_CPU_BMIPS4350
1975 bool
1976 select SYS_HAS_CPU_BMIPS
1977
1978config SYS_HAS_CPU_BMIPS4380
1979 bool
1980 select SYS_HAS_CPU_BMIPS
1981
1982config SYS_HAS_CPU_BMIPS5000
1983 bool
1984 select SYS_HAS_CPU_BMIPS
1985 select ARCH_HAS_SYNC_DMA_FOR_CPU
1986
1987config SYS_HAS_CPU_XLR
1988 bool
1989
1990config SYS_HAS_CPU_XLP
1991 bool
1992
1993#
1994# CPU may reorder R->R, R->W, W->R, W->W
1995# Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1996#
1997config WEAK_ORDERING
1998 bool
1999
2000#
2001# CPU may reorder reads and writes beyond LL/SC
2002# CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2003#
2004config WEAK_REORDERING_BEYOND_LLSC
2005 bool
2006endmenu
2007
2008#
2009# These two indicate any level of the MIPS32 and MIPS64 architecture
2010#
2011config CPU_MIPS32
2012 bool
2013 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2014
2015config CPU_MIPS64
2016 bool
2017 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2018
2019#
2020# These two indicate the revision of the architecture, either Release 1 or Release 2
2021#
2022config CPU_MIPSR1
2023 bool
2024 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2025
2026config CPU_MIPSR2
2027 bool
2028 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2029 select CPU_HAS_RIXI
2030 select MIPS_SPRAM
2031
2032config CPU_MIPSR6
2033 bool
2034 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2035 select CPU_HAS_RIXI
2036 select HAVE_ARCH_BITREVERSE
2037 select MIPS_ASID_BITS_VARIABLE
2038 select MIPS_CRC_SUPPORT
2039 select MIPS_SPRAM
2040
2041config EVA
2042 bool
2043
2044config XPA
2045 bool
2046
2047config SYS_SUPPORTS_32BIT_KERNEL
2048 bool
2049config SYS_SUPPORTS_64BIT_KERNEL
2050 bool
2051config CPU_SUPPORTS_32BIT_KERNEL
2052 bool
2053config CPU_SUPPORTS_64BIT_KERNEL
2054 bool
2055config CPU_SUPPORTS_CPUFREQ
2056 bool
2057config CPU_SUPPORTS_ADDRWINCFG
2058 bool
2059config CPU_SUPPORTS_HUGEPAGES
2060 bool
2061config CPU_SUPPORTS_UNCACHED_ACCELERATED
2062 bool
2063config MIPS_PGD_C0_CONTEXT
2064 bool
2065 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2066
2067#
2068# Set to y for ptrace access to watch registers.
2069#
2070config HARDWARE_WATCHPOINTS
2071 bool
2072 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2073
2074menu "Kernel type"
2075
2076choice
2077 prompt "Kernel code model"
2078 help
2079 You should only select this option if you have a workload that
2080 actually benefits from 64-bit processing or if your machine has
2081 large memory. You will only be presented a single option in this
2082 menu if your system does not support both 32-bit and 64-bit kernels.
2083
2084config 32BIT
2085 bool "32-bit kernel"
2086 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2087 select TRAD_SIGNALS
2088 help
2089 Select this option if you want to build a 32-bit kernel.
2090
2091config 64BIT
2092 bool "64-bit kernel"
2093 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2094 help
2095 Select this option if you want to build a 64-bit kernel.
2096
2097endchoice
2098
2099config KVM_GUEST
2100 bool "KVM Guest Kernel"
2101 depends on BROKEN_ON_SMP
2102 help
2103 Select this option if building a guest kernel for KVM (Trap & Emulate)
2104 mode.
2105
2106config KVM_GUEST_TIMER_FREQ
2107 int "Count/Compare Timer Frequency (MHz)"
2108 depends on KVM_GUEST
2109 default 100
2110 help
2111 Set this to non-zero if building a guest kernel for KVM to skip RTC
2112 emulation when determining guest CPU Frequency. Instead, the guest's
2113 timer frequency is specified directly.
2114
2115config MIPS_VA_BITS_48
2116 bool "48 bits virtual memory"
2117 depends on 64BIT
2118 help
2119 Support a maximum at least 48 bits of application virtual
2120 memory. Default is 40 bits or less, depending on the CPU.
2121 For page sizes 16k and above, this option results in a small
2122 memory overhead for page tables. For 4k page size, a fourth
2123 level of page tables is added which imposes both a memory
2124 overhead as well as slower TLB fault handling.
2125
2126 If unsure, say N.
2127
2128choice
2129 prompt "Kernel page size"
2130 default PAGE_SIZE_4KB
2131
2132config PAGE_SIZE_4KB
2133 bool "4kB"
2134 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2135 help
2136 This option select the standard 4kB Linux page size. On some
2137 R3000-family processors this is the only available page size. Using
2138 4kB page size will minimize memory consumption and is therefore
2139 recommended for low memory systems.
2140
2141config PAGE_SIZE_8KB
2142 bool "8kB"
2143 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2144 depends on !MIPS_VA_BITS_48
2145 help
2146 Using 8kB page size will result in higher performance kernel at
2147 the price of higher memory consumption. This option is available
2148 only on R8000 and cnMIPS processors. Note that you will need a
2149 suitable Linux distribution to support this.
2150
2151config PAGE_SIZE_16KB
2152 bool "16kB"
2153 depends on !CPU_R3000 && !CPU_TX39XX
2154 help
2155 Using 16kB page size will result in higher performance kernel at
2156 the price of higher memory consumption. This option is available on
2157 all non-R3000 family processors. Note that you will need a suitable
2158 Linux distribution to support this.
2159
2160config PAGE_SIZE_32KB
2161 bool "32kB"
2162 depends on CPU_CAVIUM_OCTEON
2163 depends on !MIPS_VA_BITS_48
2164 help
2165 Using 32kB page size will result in higher performance kernel at
2166 the price of higher memory consumption. This option is available
2167 only on cnMIPS cores. Note that you will need a suitable Linux
2168 distribution to support this.
2169
2170config PAGE_SIZE_64KB
2171 bool "64kB"
2172 depends on !CPU_R3000 && !CPU_TX39XX
2173 help
2174 Using 64kB page size will result in higher performance kernel at
2175 the price of higher memory consumption. This option is available on
2176 all non-R3000 family processor. Not that at the time of this
2177 writing this option is still high experimental.
2178
2179endchoice
2180
2181config FORCE_MAX_ZONEORDER
2182 int "Maximum zone order"
2183 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2184 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2185 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2186 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2187 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2188 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2189 range 11 64
2190 default "11"
2191 help
2192 The kernel memory allocator divides physically contiguous memory
2193 blocks into "zones", where each zone is a power of two number of
2194 pages. This option selects the largest power of two that the kernel
2195 keeps in the memory allocator. If you need to allocate very large
2196 blocks of physically contiguous memory, then you may need to
2197 increase this value.
2198
2199 This config option is actually maximum order plus one. For example,
2200 a value of 11 means that the largest free memory block is 2^10 pages.
2201
2202 The page size is not necessarily 4KB. Keep this in mind
2203 when choosing a value for this option.
2204
2205config BOARD_SCACHE
2206 bool
2207
2208config IP22_CPU_SCACHE
2209 bool
2210 select BOARD_SCACHE
2211
2212#
2213# Support for a MIPS32 / MIPS64 style S-caches
2214#
2215config MIPS_CPU_SCACHE
2216 bool
2217 select BOARD_SCACHE
2218
2219config R5000_CPU_SCACHE
2220 bool
2221 select BOARD_SCACHE
2222
2223config RM7000_CPU_SCACHE
2224 bool
2225 select BOARD_SCACHE
2226
2227config SIBYTE_DMA_PAGEOPS
2228 bool "Use DMA to clear/copy pages"
2229 depends on CPU_SB1
2230 help
2231 Instead of using the CPU to zero and copy pages, use a Data Mover
2232 channel. These DMA channels are otherwise unused by the standard
2233 SiByte Linux port. Seems to give a small performance benefit.
2234
2235config CPU_HAS_PREFETCH
2236 bool
2237
2238config CPU_GENERIC_DUMP_TLB
2239 bool
2240 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
2241
2242config CPU_R4K_FPU
2243 bool
2244 default y if !(CPU_R3000 || CPU_TX39XX)
2245
2246config CPU_R4K_CACHE_TLB
2247 bool
2248 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2249
2250config MIPS_MT_SMP
2251 bool "MIPS MT SMP support (1 TC on each available VPE)"
2252 default y
2253 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2254 select CPU_MIPSR2_IRQ_VI
2255 select CPU_MIPSR2_IRQ_EI
2256 select SYNC_R4K
2257 select MIPS_MT
2258 select SMP
2259 select SMP_UP
2260 select SYS_SUPPORTS_SMP
2261 select SYS_SUPPORTS_SCHED_SMT
2262 select MIPS_PERF_SHARED_TC_COUNTERS
2263 help
2264 This is a kernel model which is known as SMVP. This is supported
2265 on cores with the MT ASE and uses the available VPEs to implement
2266 virtual processors which supports SMP. This is equivalent to the
2267 Intel Hyperthreading feature. For further information go to
2268 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2269
2270config MIPS_MT
2271 bool
2272
2273config SCHED_SMT
2274 bool "SMT (multithreading) scheduler support"
2275 depends on SYS_SUPPORTS_SCHED_SMT
2276 default n
2277 help
2278 SMT scheduler support improves the CPU scheduler's decision making
2279 when dealing with MIPS MT enabled cores at a cost of slightly
2280 increased overhead in some places. If unsure say N here.
2281
2282config SYS_SUPPORTS_SCHED_SMT
2283 bool
2284
2285config SYS_SUPPORTS_MULTITHREADING
2286 bool
2287
2288config MIPS_MT_FPAFF
2289 bool "Dynamic FPU affinity for FP-intensive threads"
2290 default y
2291 depends on MIPS_MT_SMP
2292
2293config MIPSR2_TO_R6_EMULATOR
2294 bool "MIPS R2-to-R6 emulator"
2295 depends on CPU_MIPSR6
2296 default y
2297 help
2298 Choose this option if you want to run non-R6 MIPS userland code.
2299 Even if you say 'Y' here, the emulator will still be disabled by
2300 default. You can enable it using the 'mipsr2emu' kernel option.
2301 The only reason this is a build-time option is to save ~14K from the
2302 final kernel image.
2303
2304config SYS_SUPPORTS_VPE_LOADER
2305 bool
2306 depends on SYS_SUPPORTS_MULTITHREADING
2307 help
2308 Indicates that the platform supports the VPE loader, and provides
2309 physical_memsize.
2310
2311config MIPS_VPE_LOADER
2312 bool "VPE loader support."
2313 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2314 select CPU_MIPSR2_IRQ_VI
2315 select CPU_MIPSR2_IRQ_EI
2316 select MIPS_MT
2317 help
2318 Includes a loader for loading an elf relocatable object
2319 onto another VPE and running it.
2320
2321config MIPS_VPE_LOADER_CMP
2322 bool
2323 default "y"
2324 depends on MIPS_VPE_LOADER && MIPS_CMP
2325
2326config MIPS_VPE_LOADER_MT
2327 bool
2328 default "y"
2329 depends on MIPS_VPE_LOADER && !MIPS_CMP
2330
2331config MIPS_VPE_LOADER_TOM
2332 bool "Load VPE program into memory hidden from linux"
2333 depends on MIPS_VPE_LOADER
2334 default y
2335 help
2336 The loader can use memory that is present but has been hidden from
2337 Linux using the kernel command line option "mem=xxMB". It's up to
2338 you to ensure the amount you put in the option and the space your
2339 program requires is less or equal to the amount physically present.
2340
2341config MIPS_VPE_APSP_API
2342 bool "Enable support for AP/SP API (RTLX)"
2343 depends on MIPS_VPE_LOADER
2344
2345config MIPS_VPE_APSP_API_CMP
2346 bool
2347 default "y"
2348 depends on MIPS_VPE_APSP_API && MIPS_CMP
2349
2350config MIPS_VPE_APSP_API_MT
2351 bool
2352 default "y"
2353 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2354
2355config MIPS_CMP
2356 bool "MIPS CMP framework support (DEPRECATED)"
2357 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2358 select SMP
2359 select SYNC_R4K
2360 select SYS_SUPPORTS_SMP
2361 select WEAK_ORDERING
2362 default n
2363 help
2364 Select this if you are using a bootloader which implements the "CMP
2365 framework" protocol (ie. YAMON) and want your kernel to make use of
2366 its ability to start secondary CPUs.
2367
2368 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2369 instead of this.
2370
2371config MIPS_CPS
2372 bool "MIPS Coherent Processing System support"
2373 depends on SYS_SUPPORTS_MIPS_CPS
2374 select MIPS_CM
2375 select MIPS_CPS_PM if HOTPLUG_CPU
2376 select SMP
2377 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2378 select SYS_SUPPORTS_HOTPLUG_CPU
2379 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2380 select SYS_SUPPORTS_SMP
2381 select WEAK_ORDERING
2382 help
2383 Select this if you wish to run an SMP kernel across multiple cores
2384 within a MIPS Coherent Processing System. When this option is
2385 enabled the kernel will probe for other cores and boot them with
2386 no external assistance. It is safe to enable this when hardware
2387 support is unavailable.
2388
2389config MIPS_CPS_PM
2390 depends on MIPS_CPS
2391 bool
2392
2393config MIPS_CM
2394 bool
2395 select MIPS_CPC
2396
2397config MIPS_CPC
2398 bool
2399
2400config SB1_PASS_2_WORKAROUNDS
2401 bool
2402 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2403 default y
2404
2405config SB1_PASS_2_1_WORKAROUNDS
2406 bool
2407 depends on CPU_SB1 && CPU_SB1_PASS_2
2408 default y
2409
2410
2411choice
2412 prompt "SmartMIPS or microMIPS ASE support"
2413
2414config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2415 bool "None"
2416 help
2417 Select this if you want neither microMIPS nor SmartMIPS support
2418
2419config CPU_HAS_SMARTMIPS
2420 depends on SYS_SUPPORTS_SMARTMIPS
2421 bool "SmartMIPS"
2422 help
2423 SmartMIPS is a extension of the MIPS32 architecture aimed at
2424 increased security at both hardware and software level for
2425 smartcards. Enabling this option will allow proper use of the
2426 SmartMIPS instructions by Linux applications. However a kernel with
2427 this option will not work on a MIPS core without SmartMIPS core. If
2428 you don't know you probably don't have SmartMIPS and should say N
2429 here.
2430
2431config CPU_MICROMIPS
2432 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2433 bool "microMIPS"
2434 help
2435 When this option is enabled the kernel will be built using the
2436 microMIPS ISA
2437
2438endchoice
2439
2440config CPU_HAS_MSA
2441 bool "Support for the MIPS SIMD Architecture"
2442 depends on CPU_SUPPORTS_MSA
2443 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2444 help
2445 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2446 and a set of SIMD instructions to operate on them. When this option
2447 is enabled the kernel will support allocating & switching MSA
2448 vector register contexts. If you know that your kernel will only be
2449 running on CPUs which do not support MSA or that your userland will
2450 not be making use of it then you may wish to say N here to reduce
2451 the size & complexity of your kernel.
2452
2453 If unsure, say Y.
2454
2455config CPU_HAS_WB
2456 bool
2457
2458config XKS01
2459 bool
2460
2461config CPU_HAS_RIXI
2462 bool
2463
2464#
2465# Vectored interrupt mode is an R2 feature
2466#
2467config CPU_MIPSR2_IRQ_VI
2468 bool
2469
2470#
2471# Extended interrupt mode is an R2 feature
2472#
2473config CPU_MIPSR2_IRQ_EI
2474 bool
2475
2476config CPU_HAS_SYNC
2477 bool
2478 depends on !CPU_R3000
2479 default y
2480
2481#
2482# CPU non-features
2483#
2484config CPU_DADDI_WORKAROUNDS
2485 bool
2486
2487config CPU_R4000_WORKAROUNDS
2488 bool
2489 select CPU_R4400_WORKAROUNDS
2490
2491config CPU_R4400_WORKAROUNDS
2492 bool
2493
2494config MIPS_ASID_SHIFT
2495 int
2496 default 6 if CPU_R3000 || CPU_TX39XX
2497 default 4 if CPU_R8000
2498 default 0
2499
2500config MIPS_ASID_BITS
2501 int
2502 default 0 if MIPS_ASID_BITS_VARIABLE
2503 default 6 if CPU_R3000 || CPU_TX39XX
2504 default 8
2505
2506config MIPS_ASID_BITS_VARIABLE
2507 bool
2508
2509config MIPS_CRC_SUPPORT
2510 bool
2511
2512#
2513# - Highmem only makes sense for the 32-bit kernel.
2514# - The current highmem code will only work properly on physically indexed
2515# caches such as R3000, SB1, R7000 or those that look like they're virtually
2516# indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2517# moment we protect the user and offer the highmem option only on machines
2518# where it's known to be safe. This will not offer highmem on a few systems
2519# such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2520# indexed CPUs but we're playing safe.
2521# - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2522# know they might have memory configurations that could make use of highmem
2523# support.
2524#
2525config HIGHMEM
2526 bool "High Memory Support"
2527 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2528
2529config CPU_SUPPORTS_HIGHMEM
2530 bool
2531
2532config SYS_SUPPORTS_HIGHMEM
2533 bool
2534
2535config SYS_SUPPORTS_SMARTMIPS
2536 bool
2537
2538config SYS_SUPPORTS_MICROMIPS
2539 bool
2540
2541config SYS_SUPPORTS_MIPS16
2542 bool
2543 help
2544 This option must be set if a kernel might be executed on a MIPS16-
2545 enabled CPU even if MIPS16 is not actually being used. In other
2546 words, it makes the kernel MIPS16-tolerant.
2547
2548config CPU_SUPPORTS_MSA
2549 bool
2550
2551config ARCH_FLATMEM_ENABLE
2552 def_bool y
2553 depends on !NUMA && !CPU_LOONGSON2
2554
2555config ARCH_DISCONTIGMEM_ENABLE
2556 bool
2557 default y if SGI_IP27
2558 help
2559 Say Y to support efficient handling of discontiguous physical memory,
2560 for architectures which are either NUMA (Non-Uniform Memory Access)
2561 or have huge holes in the physical address space for other reasons.
2562 See <file:Documentation/vm/numa.rst> for more.
2563
2564config ARCH_SPARSEMEM_ENABLE
2565 bool
2566 select SPARSEMEM_STATIC
2567
2568config NUMA
2569 bool "NUMA Support"
2570 depends on SYS_SUPPORTS_NUMA
2571 help
2572 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2573 Access). This option improves performance on systems with more
2574 than two nodes; on two node systems it is generally better to
2575 leave it disabled; on single node systems disable this option
2576 disabled.
2577
2578config SYS_SUPPORTS_NUMA
2579 bool
2580
2581config RELOCATABLE
2582 bool "Relocatable kernel"
2583 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2584 help
2585 This builds a kernel image that retains relocation information
2586 so it can be loaded someplace besides the default 1MB.
2587 The relocations make the kernel binary about 15% larger,
2588 but are discarded at runtime
2589
2590config RELOCATION_TABLE_SIZE
2591 hex "Relocation table size"
2592 depends on RELOCATABLE
2593 range 0x0 0x01000000
2594 default "0x00100000"
2595 ---help---
2596 A table of relocation data will be appended to the kernel binary
2597 and parsed at boot to fix up the relocated kernel.
2598
2599 This option allows the amount of space reserved for the table to be
2600 adjusted, although the default of 1Mb should be ok in most cases.
2601
2602 The build will fail and a valid size suggested if this is too small.
2603
2604 If unsure, leave at the default value.
2605
2606config RANDOMIZE_BASE
2607 bool "Randomize the address of the kernel image"
2608 depends on RELOCATABLE
2609 ---help---
2610 Randomizes the physical and virtual address at which the
2611 kernel image is loaded, as a security feature that
2612 deters exploit attempts relying on knowledge of the location
2613 of kernel internals.
2614
2615 Entropy is generated using any coprocessor 0 registers available.
2616
2617 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2618
2619 If unsure, say N.
2620
2621config RANDOMIZE_BASE_MAX_OFFSET
2622 hex "Maximum kASLR offset" if EXPERT
2623 depends on RANDOMIZE_BASE
2624 range 0x0 0x40000000 if EVA || 64BIT
2625 range 0x0 0x08000000
2626 default "0x01000000"
2627 ---help---
2628 When kASLR is active, this provides the maximum offset that will
2629 be applied to the kernel image. It should be set according to the
2630 amount of physical RAM available in the target system minus
2631 PHYSICAL_START and must be a power of 2.
2632
2633 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2634 EVA or 64-bit. The default is 16Mb.
2635
2636config NODES_SHIFT
2637 int
2638 default "6"
2639 depends on NEED_MULTIPLE_NODES
2640
2641config HW_PERF_EVENTS
2642 bool "Enable hardware performance counter support for perf events"
2643 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2644 default y
2645 help
2646 Enable hardware performance counter support for perf events. If
2647 disabled, perf events will use software events only.
2648
2649config SMP
2650 bool "Multi-Processing support"
2651 depends on SYS_SUPPORTS_SMP
2652 help
2653 This enables support for systems with more than one CPU. If you have
2654 a system with only one CPU, say N. If you have a system with more
2655 than one CPU, say Y.
2656
2657 If you say N here, the kernel will run on uni- and multiprocessor
2658 machines, but will use only one CPU of a multiprocessor machine. If
2659 you say Y here, the kernel will run on many, but not all,
2660 uniprocessor machines. On a uniprocessor machine, the kernel
2661 will run faster if you say N here.
2662
2663 People using multiprocessor machines who say Y here should also say
2664 Y to "Enhanced Real Time Clock Support", below.
2665
2666 See also the SMP-HOWTO available at
2667 <http://www.tldp.org/docs.html#howto>.
2668
2669 If you don't know what to do here, say N.
2670
2671config HOTPLUG_CPU
2672 bool "Support for hot-pluggable CPUs"
2673 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2674 help
2675 Say Y here to allow turning CPUs off and on. CPUs can be
2676 controlled through /sys/devices/system/cpu.
2677 (Note: power management support will enable this option
2678 automatically on SMP systems. )
2679 Say N if you want to disable CPU hotplug.
2680
2681config SMP_UP
2682 bool
2683
2684config SYS_SUPPORTS_MIPS_CMP
2685 bool
2686
2687config SYS_SUPPORTS_MIPS_CPS
2688 bool
2689
2690config SYS_SUPPORTS_SMP
2691 bool
2692
2693config NR_CPUS_DEFAULT_4
2694 bool
2695
2696config NR_CPUS_DEFAULT_8
2697 bool
2698
2699config NR_CPUS_DEFAULT_16
2700 bool
2701
2702config NR_CPUS_DEFAULT_32
2703 bool
2704
2705config NR_CPUS_DEFAULT_64
2706 bool
2707
2708config NR_CPUS
2709 int "Maximum number of CPUs (2-256)"
2710 range 2 256
2711 depends on SMP
2712 default "4" if NR_CPUS_DEFAULT_4
2713 default "8" if NR_CPUS_DEFAULT_8
2714 default "16" if NR_CPUS_DEFAULT_16
2715 default "32" if NR_CPUS_DEFAULT_32
2716 default "64" if NR_CPUS_DEFAULT_64
2717 help
2718 This allows you to specify the maximum number of CPUs which this
2719 kernel will support. The maximum supported value is 32 for 32-bit
2720 kernel and 64 for 64-bit kernels; the minimum value which makes
2721 sense is 1 for Qemu (useful only for kernel debugging purposes)
2722 and 2 for all others.
2723
2724 This is purely to save memory - each supported CPU adds
2725 approximately eight kilobytes to the kernel image. For best
2726 performance should round up your number of processors to the next
2727 power of two.
2728
2729config MIPS_PERF_SHARED_TC_COUNTERS
2730 bool
2731
2732config MIPS_NR_CPU_NR_MAP_1024
2733 bool
2734
2735config MIPS_NR_CPU_NR_MAP
2736 int
2737 depends on SMP
2738 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2739 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2740
2741#
2742# Timer Interrupt Frequency Configuration
2743#
2744
2745choice
2746 prompt "Timer frequency"
2747 default HZ_250
2748 help
2749 Allows the configuration of the timer frequency.
2750
2751 config HZ_24
2752 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2753
2754 config HZ_48
2755 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2756
2757 config HZ_100
2758 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2759
2760 config HZ_128
2761 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2762
2763 config HZ_250
2764 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2765
2766 config HZ_256
2767 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2768
2769 config HZ_1000
2770 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2771
2772 config HZ_1024
2773 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2774
2775endchoice
2776
2777config SYS_SUPPORTS_24HZ
2778 bool
2779
2780config SYS_SUPPORTS_48HZ
2781 bool
2782
2783config SYS_SUPPORTS_100HZ
2784 bool
2785
2786config SYS_SUPPORTS_128HZ
2787 bool
2788
2789config SYS_SUPPORTS_250HZ
2790 bool
2791
2792config SYS_SUPPORTS_256HZ
2793 bool
2794
2795config SYS_SUPPORTS_1000HZ
2796 bool
2797
2798config SYS_SUPPORTS_1024HZ
2799 bool
2800
2801config SYS_SUPPORTS_ARBIT_HZ
2802 bool
2803 default y if !SYS_SUPPORTS_24HZ && \
2804 !SYS_SUPPORTS_48HZ && \
2805 !SYS_SUPPORTS_100HZ && \
2806 !SYS_SUPPORTS_128HZ && \
2807 !SYS_SUPPORTS_250HZ && \
2808 !SYS_SUPPORTS_256HZ && \
2809 !SYS_SUPPORTS_1000HZ && \
2810 !SYS_SUPPORTS_1024HZ
2811
2812config HZ
2813 int
2814 default 24 if HZ_24
2815 default 48 if HZ_48
2816 default 100 if HZ_100
2817 default 128 if HZ_128
2818 default 250 if HZ_250
2819 default 256 if HZ_256
2820 default 1000 if HZ_1000
2821 default 1024 if HZ_1024
2822
2823config SCHED_HRTICK
2824 def_bool HIGH_RES_TIMERS
2825
2826config KEXEC
2827 bool "Kexec system call"
2828 select KEXEC_CORE
2829 help
2830 kexec is a system call that implements the ability to shutdown your
2831 current kernel, and to start another kernel. It is like a reboot
2832 but it is independent of the system firmware. And like a reboot
2833 you can start any kernel with it, not just Linux.
2834
2835 The name comes from the similarity to the exec system call.
2836
2837 It is an ongoing process to be certain the hardware in a machine
2838 is properly shutdown, so do not be surprised if this code does not
2839 initially work for you. As of this writing the exact hardware
2840 interface is strongly in flux, so no good recommendation can be
2841 made.
2842
2843config CRASH_DUMP
2844 bool "Kernel crash dumps"
2845 help
2846 Generate crash dump after being started by kexec.
2847 This should be normally only set in special crash dump kernels
2848 which are loaded in the main kernel with kexec-tools into
2849 a specially reserved region and then later executed after
2850 a crash by kdump/kexec. The crash dump kernel must be compiled
2851 to a memory address not used by the main kernel or firmware using
2852 PHYSICAL_START.
2853
2854config PHYSICAL_START
2855 hex "Physical address where the kernel is loaded"
2856 default "0xffffffff84000000"
2857 depends on CRASH_DUMP
2858 help
2859 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2860 If you plan to use kernel for capturing the crash dump change
2861 this value to start of the reserved region (the "X" value as
2862 specified in the "crashkernel=YM@XM" command line boot parameter
2863 passed to the panic-ed kernel).
2864
2865config SECCOMP
2866 bool "Enable seccomp to safely compute untrusted bytecode"
2867 depends on PROC_FS
2868 default y
2869 help
2870 This kernel feature is useful for number crunching applications
2871 that may need to compute untrusted bytecode during their
2872 execution. By using pipes or other transports made available to
2873 the process as file descriptors supporting the read/write
2874 syscalls, it's possible to isolate those applications in
2875 their own address space using seccomp. Once seccomp is
2876 enabled via /proc/<pid>/seccomp, it cannot be disabled
2877 and the task is only allowed to execute a few safe syscalls
2878 defined by each seccomp mode.
2879
2880 If unsure, say Y. Only embedded should say N here.
2881
2882config MIPS_O32_FP64_SUPPORT
2883 bool "Support for O32 binaries using 64-bit FP"
2884 depends on 32BIT || MIPS32_O32
2885 help
2886 When this is enabled, the kernel will support use of 64-bit floating
2887 point registers with binaries using the O32 ABI along with the
2888 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2889 32-bit MIPS systems this support is at the cost of increasing the
2890 size and complexity of the compiled FPU emulator. Thus if you are
2891 running a MIPS32 system and know that none of your userland binaries
2892 will require 64-bit floating point, you may wish to reduce the size
2893 of your kernel & potentially improve FP emulation performance by
2894 saying N here.
2895
2896 Although binutils currently supports use of this flag the details
2897 concerning its effect upon the O32 ABI in userland are still being
2898 worked on. In order to avoid userland becoming dependant upon current
2899 behaviour before the details have been finalised, this option should
2900 be considered experimental and only enabled by those working upon
2901 said details.
2902
2903 If unsure, say N.
2904
2905config MIPS_FPU_EMULATOR
2906 bool "MIPS FPU Emulator"
2907 default y
2908 help
2909 This option lets you disable the built-in MIPS FPU (Coprocessor 1)
2910 emulator, which handles floating-point instructions on processors
2911 without a hardware FPU. It is generally a good idea to keep the
2912 emulator built-in, unless you are perfectly sure you have a
2913 complete soft-float environment. With the emulator disabled, all
2914 users of float operations will be killed with an illegal instr-
2915 uction exception.
2916
2917 Say Y, please.
2918
2919config USE_OF
2920 bool
2921 select OF
2922 select OF_EARLY_FLATTREE
2923 select IRQ_DOMAIN
2924
2925config BUILTIN_DTB
2926 bool
2927
2928choice
2929 prompt "Kernel appended dtb support" if USE_OF
2930 default MIPS_NO_APPENDED_DTB
2931
2932 config MIPS_NO_APPENDED_DTB
2933 bool "None"
2934 help
2935 Do not enable appended dtb support.
2936
2937 config MIPS_ELF_APPENDED_DTB
2938 bool "vmlinux"
2939 help
2940 With this option, the boot code will look for a device tree binary
2941 DTB) included in the vmlinux ELF section .appended_dtb. By default
2942 it is empty and the DTB can be appended using binutils command
2943 objcopy:
2944
2945 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2946
2947 This is meant as a backward compatiblity convenience for those
2948 systems with a bootloader that can't be upgraded to accommodate
2949 the documented boot protocol using a device tree.
2950
2951 config MIPS_RAW_APPENDED_DTB
2952 bool "vmlinux.bin or vmlinuz.bin"
2953 help
2954 With this option, the boot code will look for a device tree binary
2955 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2956 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2957
2958 This is meant as a backward compatibility convenience for those
2959 systems with a bootloader that can't be upgraded to accommodate
2960 the documented boot protocol using a device tree.
2961
2962 Beware that there is very little in terms of protection against
2963 this option being confused by leftover garbage in memory that might
2964 look like a DTB header after a reboot if no actual DTB is appended
2965 to vmlinux.bin. Do not leave this option active in a production kernel
2966 if you don't intend to always append a DTB.
2967endchoice
2968
2969choice
2970 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2971 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2972 !MIPS_MALTA && \
2973 !CAVIUM_OCTEON_SOC
2974 default MIPS_CMDLINE_FROM_BOOTLOADER
2975
2976 config MIPS_CMDLINE_FROM_DTB
2977 depends on USE_OF
2978 bool "Dtb kernel arguments if available"
2979
2980 config MIPS_CMDLINE_DTB_EXTEND
2981 depends on USE_OF
2982 bool "Extend dtb kernel arguments with bootloader arguments"
2983
2984 config MIPS_CMDLINE_FROM_BOOTLOADER
2985 bool "Bootloader kernel arguments if available"
2986
2987 config MIPS_CMDLINE_BUILTIN_EXTEND
2988 depends on CMDLINE_BOOL
2989 bool "Extend builtin kernel arguments with bootloader arguments"
2990endchoice
2991
2992config BOOT_RAW
2993 bool "Enable the kernel to be executed from the load address"
2994 default n
2995 help
2996 Allow the kernel to be executed from the load address for
2997 bootloaders which cannot read the ELF format. This places
2998 a jump to start_kernel at the load address.
2999
3000 If unsure, say N.
3001
3002
3003
3004endmenu
3005
3006config LOCKDEP_SUPPORT
3007 bool
3008 default y
3009
3010config STACKTRACE_SUPPORT
3011 bool
3012 default y
3013
3014config HAVE_LATENCYTOP_SUPPORT
3015 bool
3016 default y
3017
3018config PGTABLE_LEVELS
3019 int
3020 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3021 default 3 if 64BIT && !PAGE_SIZE_64KB
3022 default 2
3023
3024config MIPS_AUTO_PFN_OFFSET
3025 bool
3026
3027menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3028
3029config HW_HAS_EISA
3030 bool
3031config HW_HAS_PCI
3032 bool
3033
3034config PCI
3035 bool "Support for PCI controller"
3036 depends on HW_HAS_PCI
3037 select PCI_DOMAINS
3038 help
3039 Find out whether you have a PCI motherboard. PCI is the name of a
3040 bus system, i.e. the way the CPU talks to the other stuff inside
3041 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
3042 say Y, otherwise N.
3043
3044config HT_PCI
3045 bool "Support for HT-linked PCI"
3046 default y
3047 depends on CPU_LOONGSON3
3048 select PCI
3049 select PCI_DOMAINS
3050 help
3051 Loongson family machines use Hyper-Transport bus for inter-core
3052 connection and device connection. The PCI bus is a subordinate
3053 linked at HT. Choose Y for Loongson-3 based machines.
3054
3055config PCI_DOMAINS
3056 bool
3057
3058config PCI_DOMAINS_GENERIC
3059 bool
3060
3061config PCI_DRIVERS_GENERIC
3062 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3063 bool
3064
3065config PCI_DRIVERS_LEGACY
3066 def_bool !PCI_DRIVERS_GENERIC
3067 select NO_GENERIC_PCI_IOPORT_MAP
3068
3069source "drivers/pci/Kconfig"
3070
3071#
3072# ISA support is now enabled via select. Too many systems still have the one
3073# or other ISA chip on the board that users don't know about so don't expect
3074# users to choose the right thing ...
3075#
3076config ISA
3077 bool
3078
3079config EISA
3080 bool "EISA support"
3081 depends on HW_HAS_EISA
3082 select ISA
3083 select GENERIC_ISA_DMA
3084 ---help---
3085 The Extended Industry Standard Architecture (EISA) bus was
3086 developed as an open alternative to the IBM MicroChannel bus.
3087
3088 The EISA bus provided some of the features of the IBM MicroChannel
3089 bus while maintaining backward compatibility with cards made for
3090 the older ISA bus. The EISA bus saw limited use between 1988 and
3091 1995 when it was made obsolete by the PCI bus.
3092
3093 Say Y here if you are building a kernel for an EISA-based machine.
3094
3095 Otherwise, say N.
3096
3097source "drivers/eisa/Kconfig"
3098
3099config TC
3100 bool "TURBOchannel support"
3101 depends on MACH_DECSTATION
3102 help
3103 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3104 processors. TURBOchannel programming specifications are available
3105 at:
3106 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3107 and:
3108 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3109 Linux driver support status is documented at:
3110 <http://www.linux-mips.org/wiki/DECstation>
3111
3112config MMU
3113 bool
3114 default y
3115
3116config ARCH_MMAP_RND_BITS_MIN
3117 default 12 if 64BIT
3118 default 8
3119
3120config ARCH_MMAP_RND_BITS_MAX
3121 default 18 if 64BIT
3122 default 15
3123
3124config ARCH_MMAP_RND_COMPAT_BITS_MIN
3125 default 8
3126
3127config ARCH_MMAP_RND_COMPAT_BITS_MAX
3128 default 15
3129
3130config I8253
3131 bool
3132 select CLKSRC_I8253
3133 select CLKEVT_I8253
3134 select MIPS_EXTERNAL_TIMER
3135
3136config ZONE_DMA
3137 bool
3138
3139config ZONE_DMA32
3140 bool
3141
3142source "drivers/pcmcia/Kconfig"
3143
3144config HAS_RAPIDIO
3145 bool
3146 default n
3147
3148config RAPIDIO
3149 tristate "RapidIO support"
3150 depends on HAS_RAPIDIO || PCI
3151 help
3152 If you say Y here, the kernel will include drivers and
3153 infrastructure code to support RapidIO interconnect devices.
3154
3155source "drivers/rapidio/Kconfig"
3156
3157endmenu
3158
3159config TRAD_SIGNALS
3160 bool
3161
3162config MIPS32_COMPAT
3163 bool
3164
3165config COMPAT
3166 bool
3167
3168config SYSVIPC_COMPAT
3169 bool
3170
3171config MIPS32_O32
3172 bool "Kernel support for o32 binaries"
3173 depends on 64BIT
3174 select ARCH_WANT_OLD_COMPAT_IPC
3175 select COMPAT
3176 select MIPS32_COMPAT
3177 select SYSVIPC_COMPAT if SYSVIPC
3178 help
3179 Select this option if you want to run o32 binaries. These are pure
3180 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3181 existing binaries are in this format.
3182
3183 If unsure, say Y.
3184
3185config MIPS32_N32
3186 bool "Kernel support for n32 binaries"
3187 depends on 64BIT
3188 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3189 select COMPAT
3190 select MIPS32_COMPAT
3191 select SYSVIPC_COMPAT if SYSVIPC
3192 help
3193 Select this option if you want to run n32 binaries. These are
3194 64-bit binaries using 32-bit quantities for addressing and certain
3195 data that would normally be 64-bit. They are used in special
3196 cases.
3197
3198 If unsure, say N.
3199
3200config BINFMT_ELF32
3201 bool
3202 default y if MIPS32_O32 || MIPS32_N32
3203 select ELFCORE
3204
3205menu "Power management options"
3206
3207config ARCH_HIBERNATION_POSSIBLE
3208 def_bool y
3209 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3210
3211config ARCH_SUSPEND_POSSIBLE
3212 def_bool y
3213 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3214
3215source "kernel/power/Kconfig"
3216
3217endmenu
3218
3219config MIPS_EXTERNAL_TIMER
3220 bool
3221
3222menu "CPU Power Management"
3223
3224if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3225source "drivers/cpufreq/Kconfig"
3226endif
3227
3228source "drivers/cpuidle/Kconfig"
3229
3230endmenu
3231
3232source "drivers/firmware/Kconfig"
3233
3234source "arch/mips/kvm/Kconfig"