Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1# SPDX-License-Identifier: GPL-2.0
2config MIPS
3 bool
4 default y
5 select ARCH_32BIT_OFF_T if !64BIT
6 select ARCH_BINFMT_ELF_STATE if MIPS_FP_SUPPORT
7 select ARCH_CLOCKSOURCE_DATA
8 select ARCH_HAS_ELF_RANDOMIZE
9 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
10 select ARCH_HAS_UBSAN_SANITIZE_ALL
11 select ARCH_SUPPORTS_UPROBES
12 select ARCH_USE_BUILTIN_BSWAP
13 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
14 select ARCH_USE_QUEUED_RWLOCKS
15 select ARCH_USE_QUEUED_SPINLOCKS
16 select ARCH_WANT_IPC_PARSE_VERSION
17 select BUILDTIME_EXTABLE_SORT
18 select CLONE_BACKWARDS
19 select CPU_NO_EFFICIENT_FFS if (TARGET_ISA_REV < 1)
20 select CPU_PM if CPU_IDLE
21 select GENERIC_ATOMIC64 if !64BIT
22 select GENERIC_CLOCKEVENTS
23 select GENERIC_CMOS_UPDATE
24 select GENERIC_CPU_AUTOPROBE
25 select GENERIC_IOMAP
26 select GENERIC_IRQ_PROBE
27 select GENERIC_IRQ_SHOW
28 select GENERIC_ISA_DMA if EISA
29 select GENERIC_LIB_ASHLDI3
30 select GENERIC_LIB_ASHRDI3
31 select GENERIC_LIB_CMPDI2
32 select GENERIC_LIB_LSHRDI3
33 select GENERIC_LIB_UCMPDI2
34 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
35 select GENERIC_SMP_IDLE_THREAD
36 select GENERIC_TIME_VSYSCALL
37 select HANDLE_DOMAIN_IRQ
38 select HAVE_ARCH_COMPILER_H
39 select HAVE_ARCH_JUMP_LABEL
40 select HAVE_ARCH_KGDB
41 select HAVE_ARCH_MMAP_RND_BITS if MMU
42 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
43 select HAVE_ARCH_SECCOMP_FILTER
44 select HAVE_ARCH_TRACEHOOK
45 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
46 select HAVE_EBPF_JIT if (!CPU_MICROMIPS)
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_IDE
59 select HAVE_IOREMAP_PROT
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_LD_DEAD_CODE_DATA_ELIMINATION
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 ISA if EISA
77 select MODULES_USE_ELF_RELA if MODULES && 64BIT
78 select MODULES_USE_ELF_REL if MODULES
79 select PERF_USE_VMALLOC
80 select RTC_LIB
81 select SYSCTL_EXCEPTION_TRACE
82 select VIRT_TO_BUS
83
84menu "Machine selection"
85
86choice
87 prompt "System type"
88 default MIPS_GENERIC
89
90config MIPS_GENERIC
91 bool "Generic board-agnostic MIPS kernel"
92 select BOOT_RAW
93 select BUILTIN_DTB
94 select CEVT_R4K
95 select CLKSRC_MIPS_GIC
96 select COMMON_CLK
97 select CPU_MIPSR2_IRQ_VI
98 select CPU_MIPSR2_IRQ_EI
99 select CSRC_R4K
100 select DMA_PERDEV_COHERENT
101 select HAVE_PCI
102 select IRQ_MIPS_CPU
103 select LIBFDT
104 select MIPS_AUTO_PFN_OFFSET
105 select MIPS_CPU_SCACHE
106 select MIPS_GIC
107 select MIPS_L1_CACHE_SHIFT_7
108 select NO_EXCEPT_FILL
109 select PCI_DRIVERS_GENERIC
110 select PINCTRL
111 select SMP_UP if SMP
112 select SWAP_IO_SPACE
113 select SYS_HAS_CPU_MIPS32_R1
114 select SYS_HAS_CPU_MIPS32_R2
115 select SYS_HAS_CPU_MIPS32_R6
116 select SYS_HAS_CPU_MIPS64_R1
117 select SYS_HAS_CPU_MIPS64_R2
118 select SYS_HAS_CPU_MIPS64_R6
119 select SYS_SUPPORTS_32BIT_KERNEL
120 select SYS_SUPPORTS_64BIT_KERNEL
121 select SYS_SUPPORTS_BIG_ENDIAN
122 select SYS_SUPPORTS_HIGHMEM
123 select SYS_SUPPORTS_LITTLE_ENDIAN
124 select SYS_SUPPORTS_MICROMIPS
125 select SYS_SUPPORTS_MIPS_CPS
126 select SYS_SUPPORTS_MIPS16
127 select SYS_SUPPORTS_MULTITHREADING
128 select SYS_SUPPORTS_RELOCATABLE
129 select SYS_SUPPORTS_SMARTMIPS
130 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
131 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
132 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
133 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
134 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
135 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
136 select USE_OF
137 select UHI_BOOT
138 help
139 Select this to build a kernel which aims to support multiple boards,
140 generally using a flattened device tree passed from the bootloader
141 using the boot protocol defined in the UHI (Unified Hosting
142 Interface) specification.
143
144config MIPS_ALCHEMY
145 bool "Alchemy processor based machines"
146 select PHYS_ADDR_T_64BIT
147 select CEVT_R4K
148 select CSRC_R4K
149 select IRQ_MIPS_CPU
150 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
151 select SYS_HAS_CPU_MIPS32_R1
152 select SYS_SUPPORTS_32BIT_KERNEL
153 select SYS_SUPPORTS_APM_EMULATION
154 select GPIOLIB
155 select SYS_SUPPORTS_ZBOOT
156 select COMMON_CLK
157
158config AR7
159 bool "Texas Instruments AR7"
160 select BOOT_ELF32
161 select DMA_NONCOHERENT
162 select CEVT_R4K
163 select CSRC_R4K
164 select IRQ_MIPS_CPU
165 select NO_EXCEPT_FILL
166 select SWAP_IO_SPACE
167 select SYS_HAS_CPU_MIPS32_R1
168 select SYS_HAS_EARLY_PRINTK
169 select SYS_SUPPORTS_32BIT_KERNEL
170 select SYS_SUPPORTS_LITTLE_ENDIAN
171 select SYS_SUPPORTS_MIPS16
172 select SYS_SUPPORTS_ZBOOT_UART16550
173 select GPIOLIB
174 select VLYNQ
175 select HAVE_CLK
176 help
177 Support for the Texas Instruments AR7 System-on-a-Chip
178 family: TNETD7100, 7200 and 7300.
179
180config ATH25
181 bool "Atheros AR231x/AR531x SoC support"
182 select CEVT_R4K
183 select CSRC_R4K
184 select DMA_NONCOHERENT
185 select IRQ_MIPS_CPU
186 select IRQ_DOMAIN
187 select SYS_HAS_CPU_MIPS32_R1
188 select SYS_SUPPORTS_BIG_ENDIAN
189 select SYS_SUPPORTS_32BIT_KERNEL
190 select SYS_HAS_EARLY_PRINTK
191 help
192 Support for Atheros AR231x and Atheros AR531x based boards
193
194config ATH79
195 bool "Atheros AR71XX/AR724X/AR913X based boards"
196 select ARCH_HAS_RESET_CONTROLLER
197 select BOOT_RAW
198 select CEVT_R4K
199 select CSRC_R4K
200 select DMA_NONCOHERENT
201 select GPIOLIB
202 select PINCTRL
203 select HAVE_CLK
204 select COMMON_CLK
205 select CLKDEV_LOOKUP
206 select IRQ_MIPS_CPU
207 select SYS_HAS_CPU_MIPS32_R2
208 select SYS_HAS_EARLY_PRINTK
209 select SYS_SUPPORTS_32BIT_KERNEL
210 select SYS_SUPPORTS_BIG_ENDIAN
211 select SYS_SUPPORTS_MIPS16
212 select SYS_SUPPORTS_ZBOOT_UART_PROM
213 select USE_OF
214 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
215 help
216 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
217
218config BMIPS_GENERIC
219 bool "Broadcom Generic BMIPS kernel"
220 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
221 select ARCH_HAS_PHYS_TO_DMA
222 select BOOT_RAW
223 select NO_EXCEPT_FILL
224 select USE_OF
225 select CEVT_R4K
226 select CSRC_R4K
227 select SYNC_R4K
228 select COMMON_CLK
229 select BCM6345_L1_IRQ
230 select BCM7038_L1_IRQ
231 select BCM7120_L2_IRQ
232 select BRCMSTB_L2_IRQ
233 select IRQ_MIPS_CPU
234 select DMA_NONCOHERENT
235 select SYS_SUPPORTS_32BIT_KERNEL
236 select SYS_SUPPORTS_LITTLE_ENDIAN
237 select SYS_SUPPORTS_BIG_ENDIAN
238 select SYS_SUPPORTS_HIGHMEM
239 select SYS_HAS_CPU_BMIPS32_3300
240 select SYS_HAS_CPU_BMIPS4350
241 select SYS_HAS_CPU_BMIPS4380
242 select SYS_HAS_CPU_BMIPS5000
243 select SWAP_IO_SPACE
244 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
245 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
246 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
247 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
248 select HARDIRQS_SW_RESEND
249 help
250 Build a generic DT-based kernel image that boots on select
251 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
252 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
253 must be set appropriately for your board.
254
255config BCM47XX
256 bool "Broadcom BCM47XX based boards"
257 select BOOT_RAW
258 select CEVT_R4K
259 select CSRC_R4K
260 select DMA_NONCOHERENT
261 select HAVE_PCI
262 select IRQ_MIPS_CPU
263 select SYS_HAS_CPU_MIPS32_R1
264 select NO_EXCEPT_FILL
265 select SYS_SUPPORTS_32BIT_KERNEL
266 select SYS_SUPPORTS_LITTLE_ENDIAN
267 select SYS_SUPPORTS_MIPS16
268 select SYS_SUPPORTS_ZBOOT
269 select SYS_HAS_EARLY_PRINTK
270 select USE_GENERIC_EARLY_PRINTK_8250
271 select GPIOLIB
272 select LEDS_GPIO_REGISTER
273 select BCM47XX_NVRAM
274 select BCM47XX_SPROM
275 select BCM47XX_SSB if !BCM47XX_BCMA
276 help
277 Support for BCM47XX based boards
278
279config BCM63XX
280 bool "Broadcom BCM63XX based boards"
281 select BOOT_RAW
282 select CEVT_R4K
283 select CSRC_R4K
284 select SYNC_R4K
285 select DMA_NONCOHERENT
286 select IRQ_MIPS_CPU
287 select SYS_SUPPORTS_32BIT_KERNEL
288 select SYS_SUPPORTS_BIG_ENDIAN
289 select SYS_HAS_EARLY_PRINTK
290 select SWAP_IO_SPACE
291 select GPIOLIB
292 select HAVE_CLK
293 select MIPS_L1_CACHE_SHIFT_4
294 select CLKDEV_LOOKUP
295 help
296 Support for BCM63XX based boards
297
298config MIPS_COBALT
299 bool "Cobalt Server"
300 select CEVT_R4K
301 select CSRC_R4K
302 select CEVT_GT641XX
303 select DMA_NONCOHERENT
304 select FORCE_PCI
305 select I8253
306 select I8259
307 select IRQ_MIPS_CPU
308 select IRQ_GT641XX
309 select PCI_GT64XXX_PCI0
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 if MIPS_NO_APPENDED_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 HAVE_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 CLKSRC_MIPS_GIC
499 select COMMON_CLK
500 select CSRC_R4K
501 select DMA_MAYBE_COHERENT
502 select GENERIC_ISA_DMA
503 select HAVE_PCSPKR_PLATFORM
504 select HAVE_PCI
505 select I8253
506 select I8259
507 select IRQ_MIPS_CPU
508 select LIBFDT
509 select MIPS_BONITO64
510 select MIPS_CPU_SCACHE
511 select MIPS_GIC
512 select MIPS_L1_CACHE_SHIFT_6
513 select MIPS_MSC
514 select PCI_GT64XXX_PCI0
515 select SMP_UP if SMP
516 select SWAP_IO_SPACE
517 select SYS_HAS_CPU_MIPS32_R1
518 select SYS_HAS_CPU_MIPS32_R2
519 select SYS_HAS_CPU_MIPS32_R3_5
520 select SYS_HAS_CPU_MIPS32_R5
521 select SYS_HAS_CPU_MIPS32_R6
522 select SYS_HAS_CPU_MIPS64_R1
523 select SYS_HAS_CPU_MIPS64_R2
524 select SYS_HAS_CPU_MIPS64_R6
525 select SYS_HAS_CPU_NEVADA
526 select SYS_HAS_CPU_RM7000
527 select SYS_SUPPORTS_32BIT_KERNEL
528 select SYS_SUPPORTS_64BIT_KERNEL
529 select SYS_SUPPORTS_BIG_ENDIAN
530 select SYS_SUPPORTS_HIGHMEM
531 select SYS_SUPPORTS_LITTLE_ENDIAN
532 select SYS_SUPPORTS_MICROMIPS
533 select SYS_SUPPORTS_MIPS16
534 select SYS_SUPPORTS_MIPS_CMP
535 select SYS_SUPPORTS_MIPS_CPS
536 select SYS_SUPPORTS_MULTITHREADING
537 select SYS_SUPPORTS_RELOCATABLE
538 select SYS_SUPPORTS_SMARTMIPS
539 select SYS_SUPPORTS_VPE_LOADER
540 select SYS_SUPPORTS_ZBOOT
541 select USE_OF
542 select ZONE_DMA32 if 64BIT
543 help
544 This enables support for the MIPS Technologies Malta evaluation
545 board.
546
547config MACH_PIC32
548 bool "Microchip PIC32 Family"
549 help
550 This enables support for the Microchip PIC32 family of platforms.
551
552 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
553 microcontrollers.
554
555config NEC_MARKEINS
556 bool "NEC EMMA2RH Mark-eins board"
557 select SOC_EMMA2RH
558 select HAVE_PCI
559 help
560 This enables support for the NEC Electronics Mark-eins boards.
561
562config MACH_VR41XX
563 bool "NEC VR4100 series based machines"
564 select CEVT_R4K
565 select CSRC_R4K
566 select SYS_HAS_CPU_VR41XX
567 select SYS_SUPPORTS_MIPS16
568 select GPIOLIB
569
570config NXP_STB220
571 bool "NXP STB220 board"
572 select SOC_PNX833X
573 help
574 Support for NXP Semiconductors STB220 Development Board.
575
576config NXP_STB225
577 bool "NXP 225 board"
578 select SOC_PNX833X
579 select SOC_PNX8335
580 help
581 Support for NXP Semiconductors STB225 Development Board.
582
583config PMC_MSP
584 bool "PMC-Sierra MSP chipsets"
585 select CEVT_R4K
586 select CSRC_R4K
587 select DMA_NONCOHERENT
588 select SWAP_IO_SPACE
589 select NO_EXCEPT_FILL
590 select BOOT_RAW
591 select SYS_HAS_CPU_MIPS32_R1
592 select SYS_HAS_CPU_MIPS32_R2
593 select SYS_SUPPORTS_32BIT_KERNEL
594 select SYS_SUPPORTS_BIG_ENDIAN
595 select SYS_SUPPORTS_MIPS16
596 select IRQ_MIPS_CPU
597 select SERIAL_8250
598 select SERIAL_8250_CONSOLE
599 select USB_EHCI_BIG_ENDIAN_MMIO
600 select USB_EHCI_BIG_ENDIAN_DESC
601 help
602 This adds support for the PMC-Sierra family of Multi-Service
603 Processor System-On-A-Chips. These parts include a number
604 of integrated peripherals, interfaces and DSPs in addition to
605 a variety of MIPS cores.
606
607config RALINK
608 bool "Ralink based machines"
609 select CEVT_R4K
610 select CSRC_R4K
611 select BOOT_RAW
612 select DMA_NONCOHERENT
613 select IRQ_MIPS_CPU
614 select USE_OF
615 select SYS_HAS_CPU_MIPS32_R1
616 select SYS_HAS_CPU_MIPS32_R2
617 select SYS_SUPPORTS_32BIT_KERNEL
618 select SYS_SUPPORTS_LITTLE_ENDIAN
619 select SYS_SUPPORTS_MIPS16
620 select SYS_HAS_EARLY_PRINTK
621 select CLKDEV_LOOKUP
622 select ARCH_HAS_RESET_CONTROLLER
623 select RESET_CONTROLLER
624
625config SGI_IP22
626 bool "SGI IP22 (Indy/Indigo2)"
627 select FW_ARC
628 select FW_ARC32
629 select ARCH_MIGHT_HAVE_PC_SERIO
630 select BOOT_ELF32
631 select CEVT_R4K
632 select CSRC_R4K
633 select DEFAULT_SGI_PARTITION
634 select DMA_NONCOHERENT
635 select HAVE_EISA
636 select I8253
637 select I8259
638 select IP22_CPU_SCACHE
639 select IRQ_MIPS_CPU
640 select GENERIC_ISA_DMA_SUPPORT_BROKEN
641 select SGI_HAS_I8042
642 select SGI_HAS_INDYDOG
643 select SGI_HAS_HAL2
644 select SGI_HAS_SEEQ
645 select SGI_HAS_WD93
646 select SGI_HAS_ZILOG
647 select SWAP_IO_SPACE
648 select SYS_HAS_CPU_R4X00
649 select SYS_HAS_CPU_R5000
650 #
651 # Disable EARLY_PRINTK for now since it leads to overwritten prom
652 # memory during early boot on some machines.
653 #
654 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
655 # for a more details discussion
656 #
657 # select SYS_HAS_EARLY_PRINTK
658 select SYS_SUPPORTS_32BIT_KERNEL
659 select SYS_SUPPORTS_64BIT_KERNEL
660 select SYS_SUPPORTS_BIG_ENDIAN
661 select MIPS_L1_CACHE_SHIFT_7
662 help
663 This are the SGI Indy, Challenge S and Indigo2, as well as certain
664 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
665 that runs on these, say Y here.
666
667config SGI_IP27
668 bool "SGI IP27 (Origin200/2000)"
669 select ARCH_HAS_PHYS_TO_DMA
670 select FW_ARC
671 select FW_ARC64
672 select BOOT_ELF64
673 select DEFAULT_SGI_PARTITION
674 select SYS_HAS_EARLY_PRINTK
675 select HAVE_PCI
676 select IRQ_MIPS_CPU
677 select IRQ_DOMAIN_HIERARCHY
678 select NR_CPUS_DEFAULT_64
679 select PCI_DRIVERS_GENERIC
680 select PCI_XTALK_BRIDGE
681 select SYS_HAS_CPU_R10000
682 select SYS_SUPPORTS_64BIT_KERNEL
683 select SYS_SUPPORTS_BIG_ENDIAN
684 select SYS_SUPPORTS_NUMA
685 select SYS_SUPPORTS_SMP
686 select MIPS_L1_CACHE_SHIFT_7
687 help
688 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
689 workstations. To compile a Linux kernel that runs on these, say Y
690 here.
691
692config SGI_IP28
693 bool "SGI IP28 (Indigo2 R10k)"
694 select FW_ARC
695 select FW_ARC64
696 select ARCH_MIGHT_HAVE_PC_SERIO
697 select BOOT_ELF64
698 select CEVT_R4K
699 select CSRC_R4K
700 select DEFAULT_SGI_PARTITION
701 select DMA_NONCOHERENT
702 select GENERIC_ISA_DMA_SUPPORT_BROKEN
703 select IRQ_MIPS_CPU
704 select HAVE_EISA
705 select I8253
706 select I8259
707 select SGI_HAS_I8042
708 select SGI_HAS_INDYDOG
709 select SGI_HAS_HAL2
710 select SGI_HAS_SEEQ
711 select SGI_HAS_WD93
712 select SGI_HAS_ZILOG
713 select SWAP_IO_SPACE
714 select SYS_HAS_CPU_R10000
715 #
716 # Disable EARLY_PRINTK for now since it leads to overwritten prom
717 # memory during early boot on some machines.
718 #
719 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
720 # for a more details discussion
721 #
722 # select SYS_HAS_EARLY_PRINTK
723 select SYS_SUPPORTS_64BIT_KERNEL
724 select SYS_SUPPORTS_BIG_ENDIAN
725 select MIPS_L1_CACHE_SHIFT_7
726 help
727 This is the SGI Indigo2 with R10000 processor. To compile a Linux
728 kernel that runs on these, say Y here.
729
730config SGI_IP32
731 bool "SGI IP32 (O2)"
732 select ARCH_HAS_PHYS_TO_DMA
733 select FW_ARC
734 select FW_ARC32
735 select BOOT_ELF32
736 select CEVT_R4K
737 select CSRC_R4K
738 select DMA_NONCOHERENT
739 select HAVE_PCI
740 select IRQ_MIPS_CPU
741 select R5000_CPU_SCACHE
742 select RM7000_CPU_SCACHE
743 select SYS_HAS_CPU_R5000
744 select SYS_HAS_CPU_R10000 if BROKEN
745 select SYS_HAS_CPU_RM7000
746 select SYS_HAS_CPU_NEVADA
747 select SYS_SUPPORTS_64BIT_KERNEL
748 select SYS_SUPPORTS_BIG_ENDIAN
749 help
750 If you want this kernel to run on SGI O2 workstation, say Y here.
751
752config SIBYTE_CRHINE
753 bool "Sibyte BCM91120C-CRhine"
754 select BOOT_ELF32
755 select SIBYTE_BCM1120
756 select SWAP_IO_SPACE
757 select SYS_HAS_CPU_SB1
758 select SYS_SUPPORTS_BIG_ENDIAN
759 select SYS_SUPPORTS_LITTLE_ENDIAN
760
761config SIBYTE_CARMEL
762 bool "Sibyte BCM91120x-Carmel"
763 select BOOT_ELF32
764 select SIBYTE_BCM1120
765 select SWAP_IO_SPACE
766 select SYS_HAS_CPU_SB1
767 select SYS_SUPPORTS_BIG_ENDIAN
768 select SYS_SUPPORTS_LITTLE_ENDIAN
769
770config SIBYTE_CRHONE
771 bool "Sibyte BCM91125C-CRhone"
772 select BOOT_ELF32
773 select SIBYTE_BCM1125
774 select SWAP_IO_SPACE
775 select SYS_HAS_CPU_SB1
776 select SYS_SUPPORTS_BIG_ENDIAN
777 select SYS_SUPPORTS_HIGHMEM
778 select SYS_SUPPORTS_LITTLE_ENDIAN
779
780config SIBYTE_RHONE
781 bool "Sibyte BCM91125E-Rhone"
782 select BOOT_ELF32
783 select SIBYTE_BCM1125H
784 select SWAP_IO_SPACE
785 select SYS_HAS_CPU_SB1
786 select SYS_SUPPORTS_BIG_ENDIAN
787 select SYS_SUPPORTS_LITTLE_ENDIAN
788
789config SIBYTE_SWARM
790 bool "Sibyte BCM91250A-SWARM"
791 select BOOT_ELF32
792 select HAVE_PATA_PLATFORM
793 select SIBYTE_SB1250
794 select SWAP_IO_SPACE
795 select SYS_HAS_CPU_SB1
796 select SYS_SUPPORTS_BIG_ENDIAN
797 select SYS_SUPPORTS_HIGHMEM
798 select SYS_SUPPORTS_LITTLE_ENDIAN
799 select ZONE_DMA32 if 64BIT
800 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
801
802config SIBYTE_LITTLESUR
803 bool "Sibyte BCM91250C2-LittleSur"
804 select BOOT_ELF32
805 select HAVE_PATA_PLATFORM
806 select SIBYTE_SB1250
807 select SWAP_IO_SPACE
808 select SYS_HAS_CPU_SB1
809 select SYS_SUPPORTS_BIG_ENDIAN
810 select SYS_SUPPORTS_HIGHMEM
811 select SYS_SUPPORTS_LITTLE_ENDIAN
812 select ZONE_DMA32 if 64BIT
813
814config SIBYTE_SENTOSA
815 bool "Sibyte BCM91250E-Sentosa"
816 select BOOT_ELF32
817 select SIBYTE_SB1250
818 select SWAP_IO_SPACE
819 select SYS_HAS_CPU_SB1
820 select SYS_SUPPORTS_BIG_ENDIAN
821 select SYS_SUPPORTS_LITTLE_ENDIAN
822 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
823
824config SIBYTE_BIGSUR
825 bool "Sibyte BCM91480B-BigSur"
826 select BOOT_ELF32
827 select NR_CPUS_DEFAULT_4
828 select SIBYTE_BCM1x80
829 select SWAP_IO_SPACE
830 select SYS_HAS_CPU_SB1
831 select SYS_SUPPORTS_BIG_ENDIAN
832 select SYS_SUPPORTS_HIGHMEM
833 select SYS_SUPPORTS_LITTLE_ENDIAN
834 select ZONE_DMA32 if 64BIT
835 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
836
837config SNI_RM
838 bool "SNI RM200/300/400"
839 select FW_ARC if CPU_LITTLE_ENDIAN
840 select FW_ARC32 if CPU_LITTLE_ENDIAN
841 select FW_SNIPROM if CPU_BIG_ENDIAN
842 select ARCH_MAY_HAVE_PC_FDC
843 select ARCH_MIGHT_HAVE_PC_PARPORT
844 select ARCH_MIGHT_HAVE_PC_SERIO
845 select BOOT_ELF32
846 select CEVT_R4K
847 select CSRC_R4K
848 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
849 select DMA_NONCOHERENT
850 select GENERIC_ISA_DMA
851 select HAVE_EISA
852 select HAVE_PCSPKR_PLATFORM
853 select HAVE_PCI
854 select IRQ_MIPS_CPU
855 select I8253
856 select I8259
857 select ISA
858 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
859 select SYS_HAS_CPU_R4X00
860 select SYS_HAS_CPU_R5000
861 select SYS_HAS_CPU_R10000
862 select R5000_CPU_SCACHE
863 select SYS_HAS_EARLY_PRINTK
864 select SYS_SUPPORTS_32BIT_KERNEL
865 select SYS_SUPPORTS_64BIT_KERNEL
866 select SYS_SUPPORTS_BIG_ENDIAN
867 select SYS_SUPPORTS_HIGHMEM
868 select SYS_SUPPORTS_LITTLE_ENDIAN
869 help
870 The SNI RM200/300/400 are MIPS-based machines manufactured by
871 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
872 Technology and now in turn merged with Fujitsu. Say Y here to
873 support this machine type.
874
875config MACH_TX39XX
876 bool "Toshiba TX39 series based machines"
877
878config MACH_TX49XX
879 bool "Toshiba TX49 series based machines"
880
881config MIKROTIK_RB532
882 bool "Mikrotik RB532 boards"
883 select CEVT_R4K
884 select CSRC_R4K
885 select DMA_NONCOHERENT
886 select HAVE_PCI
887 select IRQ_MIPS_CPU
888 select SYS_HAS_CPU_MIPS32_R1
889 select SYS_SUPPORTS_32BIT_KERNEL
890 select SYS_SUPPORTS_LITTLE_ENDIAN
891 select SWAP_IO_SPACE
892 select BOOT_RAW
893 select GPIOLIB
894 select MIPS_L1_CACHE_SHIFT_4
895 help
896 Support the Mikrotik(tm) RouterBoard 532 series,
897 based on the IDT RC32434 SoC.
898
899config CAVIUM_OCTEON_SOC
900 bool "Cavium Networks Octeon SoC based boards"
901 select CEVT_R4K
902 select ARCH_HAS_PHYS_TO_DMA
903 select HAVE_RAPIDIO
904 select PHYS_ADDR_T_64BIT
905 select SYS_SUPPORTS_64BIT_KERNEL
906 select SYS_SUPPORTS_BIG_ENDIAN
907 select EDAC_SUPPORT
908 select EDAC_ATOMIC_SCRUB
909 select SYS_SUPPORTS_LITTLE_ENDIAN
910 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
911 select SYS_HAS_EARLY_PRINTK
912 select SYS_HAS_CPU_CAVIUM_OCTEON
913 select HAVE_PCI
914 select ZONE_DMA32
915 select HOLES_IN_ZONE
916 select GPIOLIB
917 select LIBFDT
918 select USE_OF
919 select ARCH_SPARSEMEM_ENABLE
920 select SYS_SUPPORTS_SMP
921 select NR_CPUS_DEFAULT_64
922 select MIPS_NR_CPU_NR_MAP_1024
923 select BUILTIN_DTB
924 select MTD_COMPLEX_MAPPINGS
925 select SWIOTLB
926 select SYS_SUPPORTS_RELOCATABLE
927 help
928 This option supports all of the Octeon reference boards from Cavium
929 Networks. It builds a kernel that dynamically determines the Octeon
930 CPU type and supports all known board reference implementations.
931 Some of the supported boards are:
932 EBT3000
933 EBH3000
934 EBH3100
935 Thunder
936 Kodama
937 Hikari
938 Say Y here for most Octeon reference boards.
939
940config NLM_XLR_BOARD
941 bool "Netlogic XLR/XLS based systems"
942 select BOOT_ELF32
943 select NLM_COMMON
944 select SYS_HAS_CPU_XLR
945 select SYS_SUPPORTS_SMP
946 select HAVE_PCI
947 select SWAP_IO_SPACE
948 select SYS_SUPPORTS_32BIT_KERNEL
949 select SYS_SUPPORTS_64BIT_KERNEL
950 select PHYS_ADDR_T_64BIT
951 select SYS_SUPPORTS_BIG_ENDIAN
952 select SYS_SUPPORTS_HIGHMEM
953 select NR_CPUS_DEFAULT_32
954 select CEVT_R4K
955 select CSRC_R4K
956 select IRQ_MIPS_CPU
957 select ZONE_DMA32 if 64BIT
958 select SYNC_R4K
959 select SYS_HAS_EARLY_PRINTK
960 select SYS_SUPPORTS_ZBOOT
961 select SYS_SUPPORTS_ZBOOT_UART16550
962 help
963 Support for systems based on Netlogic XLR and XLS processors.
964 Say Y here if you have a XLR or XLS based board.
965
966config NLM_XLP_BOARD
967 bool "Netlogic XLP based systems"
968 select BOOT_ELF32
969 select NLM_COMMON
970 select SYS_HAS_CPU_XLP
971 select SYS_SUPPORTS_SMP
972 select HAVE_PCI
973 select SYS_SUPPORTS_32BIT_KERNEL
974 select SYS_SUPPORTS_64BIT_KERNEL
975 select PHYS_ADDR_T_64BIT
976 select GPIOLIB
977 select SYS_SUPPORTS_BIG_ENDIAN
978 select SYS_SUPPORTS_LITTLE_ENDIAN
979 select SYS_SUPPORTS_HIGHMEM
980 select NR_CPUS_DEFAULT_32
981 select CEVT_R4K
982 select CSRC_R4K
983 select IRQ_MIPS_CPU
984 select ZONE_DMA32 if 64BIT
985 select SYNC_R4K
986 select SYS_HAS_EARLY_PRINTK
987 select USE_OF
988 select SYS_SUPPORTS_ZBOOT
989 select SYS_SUPPORTS_ZBOOT_UART16550
990 help
991 This board is based on Netlogic XLP Processor.
992 Say Y here if you have a XLP based board.
993
994config MIPS_PARAVIRT
995 bool "Para-Virtualized guest system"
996 select CEVT_R4K
997 select CSRC_R4K
998 select SYS_SUPPORTS_64BIT_KERNEL
999 select SYS_SUPPORTS_32BIT_KERNEL
1000 select SYS_SUPPORTS_BIG_ENDIAN
1001 select SYS_SUPPORTS_SMP
1002 select NR_CPUS_DEFAULT_4
1003 select SYS_HAS_EARLY_PRINTK
1004 select SYS_HAS_CPU_MIPS32_R2
1005 select SYS_HAS_CPU_MIPS64_R2
1006 select SYS_HAS_CPU_CAVIUM_OCTEON
1007 select HAVE_PCI
1008 select SWAP_IO_SPACE
1009 help
1010 This option supports guest running under ????
1011
1012endchoice
1013
1014source "arch/mips/alchemy/Kconfig"
1015source "arch/mips/ath25/Kconfig"
1016source "arch/mips/ath79/Kconfig"
1017source "arch/mips/bcm47xx/Kconfig"
1018source "arch/mips/bcm63xx/Kconfig"
1019source "arch/mips/bmips/Kconfig"
1020source "arch/mips/generic/Kconfig"
1021source "arch/mips/jazz/Kconfig"
1022source "arch/mips/jz4740/Kconfig"
1023source "arch/mips/lantiq/Kconfig"
1024source "arch/mips/lasat/Kconfig"
1025source "arch/mips/pic32/Kconfig"
1026source "arch/mips/pistachio/Kconfig"
1027source "arch/mips/pmcs-msp71xx/Kconfig"
1028source "arch/mips/ralink/Kconfig"
1029source "arch/mips/sgi-ip27/Kconfig"
1030source "arch/mips/sibyte/Kconfig"
1031source "arch/mips/txx9/Kconfig"
1032source "arch/mips/vr41xx/Kconfig"
1033source "arch/mips/cavium-octeon/Kconfig"
1034source "arch/mips/loongson32/Kconfig"
1035source "arch/mips/loongson64/Kconfig"
1036source "arch/mips/netlogic/Kconfig"
1037source "arch/mips/paravirt/Kconfig"
1038
1039endmenu
1040
1041config GENERIC_HWEIGHT
1042 bool
1043 default y
1044
1045config GENERIC_CALIBRATE_DELAY
1046 bool
1047 default y
1048
1049config SCHED_OMIT_FRAME_POINTER
1050 bool
1051 default y
1052
1053#
1054# Select some configuration options automatically based on user selections.
1055#
1056config FW_ARC
1057 bool
1058
1059config ARCH_MAY_HAVE_PC_FDC
1060 bool
1061
1062config BOOT_RAW
1063 bool
1064
1065config CEVT_BCM1480
1066 bool
1067
1068config CEVT_DS1287
1069 bool
1070
1071config CEVT_GT641XX
1072 bool
1073
1074config CEVT_R4K
1075 bool
1076
1077config CEVT_SB1250
1078 bool
1079
1080config CEVT_TXX9
1081 bool
1082
1083config CSRC_BCM1480
1084 bool
1085
1086config CSRC_IOASIC
1087 bool
1088
1089config CSRC_R4K
1090 bool
1091
1092config CSRC_SB1250
1093 bool
1094
1095config MIPS_CLOCK_VSYSCALL
1096 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1097
1098config GPIO_TXX9
1099 select GPIOLIB
1100 bool
1101
1102config FW_CFE
1103 bool
1104
1105config ARCH_SUPPORTS_UPROBES
1106 bool
1107
1108config DMA_MAYBE_COHERENT
1109 select ARCH_HAS_DMA_COHERENCE_H
1110 select DMA_NONCOHERENT
1111 bool
1112
1113config DMA_PERDEV_COHERENT
1114 bool
1115 select ARCH_HAS_SETUP_DMA_OPS
1116 select DMA_NONCOHERENT
1117
1118config DMA_NONCOHERENT
1119 bool
1120 select ARCH_HAS_DMA_MMAP_PGPROT
1121 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1122 select NEED_DMA_MAP_STATE
1123 select ARCH_HAS_DMA_COHERENT_TO_PFN
1124 select DMA_NONCOHERENT_CACHE_SYNC
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 NO_IOPORT_MAP
1148 def_bool n
1149
1150config GENERIC_CSUM
1151 bool
1152 default y if !CPU_HAS_LOAD_STORE_LR
1153
1154config GENERIC_ISA_DMA
1155 bool
1156 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1157 select ISA_DMA_API
1158
1159config GENERIC_ISA_DMA_SUPPORT_BROKEN
1160 bool
1161 select GENERIC_ISA_DMA
1162
1163config ISA_DMA_API
1164 bool
1165
1166config HOLES_IN_ZONE
1167 bool
1168
1169config SYS_SUPPORTS_RELOCATABLE
1170 bool
1171 help
1172 Selected if the platform supports relocating the kernel.
1173 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1174 to allow access to command line and entropy sources.
1175
1176config MIPS_CBPF_JIT
1177 def_bool y
1178 depends on BPF_JIT && HAVE_CBPF_JIT
1179
1180config MIPS_EBPF_JIT
1181 def_bool y
1182 depends on BPF_JIT && HAVE_EBPF_JIT
1183
1184
1185#
1186# Endianness selection. Sufficiently obscure so many users don't know what to
1187# answer,so we try hard to limit the available choices. Also the use of a
1188# choice statement should be more obvious to the user.
1189#
1190choice
1191 prompt "Endianness selection"
1192 help
1193 Some MIPS machines can be configured for either little or big endian
1194 byte order. These modes require different kernels and a different
1195 Linux distribution. In general there is one preferred byteorder for a
1196 particular system but some systems are just as commonly used in the
1197 one or the other endianness.
1198
1199config CPU_BIG_ENDIAN
1200 bool "Big endian"
1201 depends on SYS_SUPPORTS_BIG_ENDIAN
1202
1203config CPU_LITTLE_ENDIAN
1204 bool "Little endian"
1205 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1206
1207endchoice
1208
1209config EXPORT_UASM
1210 bool
1211
1212config SYS_SUPPORTS_APM_EMULATION
1213 bool
1214
1215config SYS_SUPPORTS_BIG_ENDIAN
1216 bool
1217
1218config SYS_SUPPORTS_LITTLE_ENDIAN
1219 bool
1220
1221config SYS_SUPPORTS_HUGETLBFS
1222 bool
1223 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1224 default y
1225
1226config MIPS_HUGE_TLB_SUPPORT
1227 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1228
1229config IRQ_CPU_RM7K
1230 bool
1231
1232config IRQ_MSP_SLP
1233 bool
1234
1235config IRQ_MSP_CIC
1236 bool
1237
1238config IRQ_TXX9
1239 bool
1240
1241config IRQ_GT641XX
1242 bool
1243
1244config PCI_GT64XXX_PCI0
1245 bool
1246
1247config PCI_XTALK_BRIDGE
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 CPU_HAS_LOAD_STORE_LR
1375 select WEAK_ORDERING
1376 select WEAK_REORDERING_BEYOND_LLSC
1377 select MIPS_PGD_C0_CONTEXT
1378 select MIPS_L1_CACHE_SHIFT_6
1379 select GPIOLIB
1380 select SWIOTLB
1381 help
1382 The Loongson 3 processor implements the MIPS64R2 instruction
1383 set with many extensions.
1384
1385config LOONGSON3_ENHANCEMENT
1386 bool "New Loongson 3 CPU Enhancements"
1387 default n
1388 select CPU_MIPSR2
1389 select CPU_HAS_PREFETCH
1390 depends on CPU_LOONGSON3
1391 help
1392 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1393 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1394 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1395 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1396 Fast TLB refill support, etc.
1397
1398 This option enable those enhancements which are not probed at run
1399 time. If you want a generic kernel to run on all Loongson 3 machines,
1400 please say 'N' here. If you want a high-performance kernel to run on
1401 new Loongson 3 machines only, please say 'Y' here.
1402
1403config CPU_LOONGSON3_WORKAROUNDS
1404 bool "Old Loongson 3 LLSC Workarounds"
1405 default y if SMP
1406 depends on CPU_LOONGSON3
1407 help
1408 Loongson 3 processors have the llsc issues which require workarounds.
1409 Without workarounds the system may hang unexpectedly.
1410
1411 Newer Loongson 3 will fix these issues and no workarounds are needed.
1412 The workarounds have no significant side effect on them but may
1413 decrease the performance of the system so this option should be
1414 disabled unless the kernel is intended to be run on old systems.
1415
1416 If unsure, please say Y.
1417
1418config CPU_LOONGSON2E
1419 bool "Loongson 2E"
1420 depends on SYS_HAS_CPU_LOONGSON2E
1421 select CPU_LOONGSON2
1422 help
1423 The Loongson 2E processor implements the MIPS III instruction set
1424 with many extensions.
1425
1426 It has an internal FPGA northbridge, which is compatible to
1427 bonito64.
1428
1429config CPU_LOONGSON2F
1430 bool "Loongson 2F"
1431 depends on SYS_HAS_CPU_LOONGSON2F
1432 select CPU_LOONGSON2
1433 select GPIOLIB
1434 help
1435 The Loongson 2F processor implements the MIPS III instruction set
1436 with many extensions.
1437
1438 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1439 have a similar programming interface with FPGA northbridge used in
1440 Loongson2E.
1441
1442config CPU_LOONGSON1B
1443 bool "Loongson 1B"
1444 depends on SYS_HAS_CPU_LOONGSON1B
1445 select CPU_LOONGSON1
1446 select LEDS_GPIO_REGISTER
1447 help
1448 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1449 Release 1 instruction set and part of the MIPS32 Release 2
1450 instruction set.
1451
1452config CPU_LOONGSON1C
1453 bool "Loongson 1C"
1454 depends on SYS_HAS_CPU_LOONGSON1C
1455 select CPU_LOONGSON1
1456 select LEDS_GPIO_REGISTER
1457 help
1458 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1459 Release 1 instruction set and part of the MIPS32 Release 2
1460 instruction set.
1461
1462config CPU_MIPS32_R1
1463 bool "MIPS32 Release 1"
1464 depends on SYS_HAS_CPU_MIPS32_R1
1465 select CPU_HAS_PREFETCH
1466 select CPU_HAS_LOAD_STORE_LR
1467 select CPU_SUPPORTS_32BIT_KERNEL
1468 select CPU_SUPPORTS_HIGHMEM
1469 help
1470 Choose this option to build a kernel for release 1 or later of the
1471 MIPS32 architecture. Most modern embedded systems with a 32-bit
1472 MIPS processor are based on a MIPS32 processor. If you know the
1473 specific type of processor in your system, choose those that one
1474 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1475 Release 2 of the MIPS32 architecture is available since several
1476 years so chances are you even have a MIPS32 Release 2 processor
1477 in which case you should choose CPU_MIPS32_R2 instead for better
1478 performance.
1479
1480config CPU_MIPS32_R2
1481 bool "MIPS32 Release 2"
1482 depends on SYS_HAS_CPU_MIPS32_R2
1483 select CPU_HAS_PREFETCH
1484 select CPU_HAS_LOAD_STORE_LR
1485 select CPU_SUPPORTS_32BIT_KERNEL
1486 select CPU_SUPPORTS_HIGHMEM
1487 select CPU_SUPPORTS_MSA
1488 select HAVE_KVM
1489 help
1490 Choose this option to build a kernel for release 2 or later of the
1491 MIPS32 architecture. Most modern embedded systems with a 32-bit
1492 MIPS processor are based on a MIPS32 processor. If you know the
1493 specific type of processor in your system, choose those that one
1494 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1495
1496config CPU_MIPS32_R6
1497 bool "MIPS32 Release 6"
1498 depends on SYS_HAS_CPU_MIPS32_R6
1499 select CPU_HAS_PREFETCH
1500 select CPU_SUPPORTS_32BIT_KERNEL
1501 select CPU_SUPPORTS_HIGHMEM
1502 select CPU_SUPPORTS_MSA
1503 select HAVE_KVM
1504 select MIPS_O32_FP64_SUPPORT
1505 help
1506 Choose this option to build a kernel for release 6 or later of the
1507 MIPS32 architecture. New MIPS processors, starting with the Warrior
1508 family, are based on a MIPS32r6 processor. If you own an older
1509 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1510
1511config CPU_MIPS64_R1
1512 bool "MIPS64 Release 1"
1513 depends on SYS_HAS_CPU_MIPS64_R1
1514 select CPU_HAS_PREFETCH
1515 select CPU_HAS_LOAD_STORE_LR
1516 select CPU_SUPPORTS_32BIT_KERNEL
1517 select CPU_SUPPORTS_64BIT_KERNEL
1518 select CPU_SUPPORTS_HIGHMEM
1519 select CPU_SUPPORTS_HUGEPAGES
1520 help
1521 Choose this option to build a kernel for release 1 or later of the
1522 MIPS64 architecture. Many modern embedded systems with a 64-bit
1523 MIPS processor are based on a MIPS64 processor. If you know the
1524 specific type of processor in your system, choose those that one
1525 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1526 Release 2 of the MIPS64 architecture is available since several
1527 years so chances are you even have a MIPS64 Release 2 processor
1528 in which case you should choose CPU_MIPS64_R2 instead for better
1529 performance.
1530
1531config CPU_MIPS64_R2
1532 bool "MIPS64 Release 2"
1533 depends on SYS_HAS_CPU_MIPS64_R2
1534 select CPU_HAS_PREFETCH
1535 select CPU_HAS_LOAD_STORE_LR
1536 select CPU_SUPPORTS_32BIT_KERNEL
1537 select CPU_SUPPORTS_64BIT_KERNEL
1538 select CPU_SUPPORTS_HIGHMEM
1539 select CPU_SUPPORTS_HUGEPAGES
1540 select CPU_SUPPORTS_MSA
1541 select HAVE_KVM
1542 help
1543 Choose this option to build a kernel for release 2 or later of the
1544 MIPS64 architecture. Many modern embedded systems with a 64-bit
1545 MIPS processor are based on a MIPS64 processor. If you know the
1546 specific type of processor in your system, choose those that one
1547 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1548
1549config CPU_MIPS64_R6
1550 bool "MIPS64 Release 6"
1551 depends on SYS_HAS_CPU_MIPS64_R6
1552 select CPU_HAS_PREFETCH
1553 select CPU_SUPPORTS_32BIT_KERNEL
1554 select CPU_SUPPORTS_64BIT_KERNEL
1555 select CPU_SUPPORTS_HIGHMEM
1556 select CPU_SUPPORTS_HUGEPAGES
1557 select CPU_SUPPORTS_MSA
1558 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1559 select HAVE_KVM
1560 help
1561 Choose this option to build a kernel for release 6 or later of the
1562 MIPS64 architecture. New MIPS processors, starting with the Warrior
1563 family, are based on a MIPS64r6 processor. If you own an older
1564 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1565
1566config CPU_R3000
1567 bool "R3000"
1568 depends on SYS_HAS_CPU_R3000
1569 select CPU_HAS_WB
1570 select CPU_HAS_LOAD_STORE_LR
1571 select CPU_SUPPORTS_32BIT_KERNEL
1572 select CPU_SUPPORTS_HIGHMEM
1573 help
1574 Please make sure to pick the right CPU type. Linux/MIPS is not
1575 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1576 *not* work on R4000 machines and vice versa. However, since most
1577 of the supported machines have an R4000 (or similar) CPU, R4x00
1578 might be a safe bet. If the resulting kernel does not work,
1579 try to recompile with R3000.
1580
1581config CPU_TX39XX
1582 bool "R39XX"
1583 depends on SYS_HAS_CPU_TX39XX
1584 select CPU_SUPPORTS_32BIT_KERNEL
1585 select CPU_HAS_LOAD_STORE_LR
1586
1587config CPU_VR41XX
1588 bool "R41xx"
1589 depends on SYS_HAS_CPU_VR41XX
1590 select CPU_SUPPORTS_32BIT_KERNEL
1591 select CPU_SUPPORTS_64BIT_KERNEL
1592 select CPU_HAS_LOAD_STORE_LR
1593 help
1594 The options selects support for the NEC VR4100 series of processors.
1595 Only choose this option if you have one of these processors as a
1596 kernel built with this option will not run on any other type of
1597 processor or vice versa.
1598
1599config CPU_R4300
1600 bool "R4300"
1601 depends on SYS_HAS_CPU_R4300
1602 select CPU_SUPPORTS_32BIT_KERNEL
1603 select CPU_SUPPORTS_64BIT_KERNEL
1604 select CPU_HAS_LOAD_STORE_LR
1605 help
1606 MIPS Technologies R4300-series processors.
1607
1608config CPU_R4X00
1609 bool "R4x00"
1610 depends on SYS_HAS_CPU_R4X00
1611 select CPU_SUPPORTS_32BIT_KERNEL
1612 select CPU_SUPPORTS_64BIT_KERNEL
1613 select CPU_SUPPORTS_HUGEPAGES
1614 select CPU_HAS_LOAD_STORE_LR
1615 help
1616 MIPS Technologies R4000-series processors other than 4300, including
1617 the R4000, R4400, R4600, and 4700.
1618
1619config CPU_TX49XX
1620 bool "R49XX"
1621 depends on SYS_HAS_CPU_TX49XX
1622 select CPU_HAS_PREFETCH
1623 select CPU_HAS_LOAD_STORE_LR
1624 select CPU_SUPPORTS_32BIT_KERNEL
1625 select CPU_SUPPORTS_64BIT_KERNEL
1626 select CPU_SUPPORTS_HUGEPAGES
1627
1628config CPU_R5000
1629 bool "R5000"
1630 depends on SYS_HAS_CPU_R5000
1631 select CPU_SUPPORTS_32BIT_KERNEL
1632 select CPU_SUPPORTS_64BIT_KERNEL
1633 select CPU_SUPPORTS_HUGEPAGES
1634 select CPU_HAS_LOAD_STORE_LR
1635 help
1636 MIPS Technologies R5000-series processors other than the Nevada.
1637
1638config CPU_R5432
1639 bool "R5432"
1640 depends on SYS_HAS_CPU_R5432
1641 select CPU_SUPPORTS_32BIT_KERNEL
1642 select CPU_SUPPORTS_64BIT_KERNEL
1643 select CPU_SUPPORTS_HUGEPAGES
1644 select CPU_HAS_LOAD_STORE_LR
1645
1646config CPU_R5500
1647 bool "R5500"
1648 depends on SYS_HAS_CPU_R5500
1649 select CPU_SUPPORTS_32BIT_KERNEL
1650 select CPU_SUPPORTS_64BIT_KERNEL
1651 select CPU_SUPPORTS_HUGEPAGES
1652 select CPU_HAS_LOAD_STORE_LR
1653 help
1654 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1655 instruction set.
1656
1657config CPU_NEVADA
1658 bool "RM52xx"
1659 depends on SYS_HAS_CPU_NEVADA
1660 select CPU_SUPPORTS_32BIT_KERNEL
1661 select CPU_SUPPORTS_64BIT_KERNEL
1662 select CPU_SUPPORTS_HUGEPAGES
1663 select CPU_HAS_LOAD_STORE_LR
1664 help
1665 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1666
1667config CPU_R8000
1668 bool "R8000"
1669 depends on SYS_HAS_CPU_R8000
1670 select CPU_HAS_PREFETCH
1671 select CPU_HAS_LOAD_STORE_LR
1672 select CPU_SUPPORTS_64BIT_KERNEL
1673 help
1674 MIPS Technologies R8000 processors. Note these processors are
1675 uncommon and the support for them is incomplete.
1676
1677config CPU_R10000
1678 bool "R10000"
1679 depends on SYS_HAS_CPU_R10000
1680 select CPU_HAS_PREFETCH
1681 select CPU_HAS_LOAD_STORE_LR
1682 select CPU_SUPPORTS_32BIT_KERNEL
1683 select CPU_SUPPORTS_64BIT_KERNEL
1684 select CPU_SUPPORTS_HIGHMEM
1685 select CPU_SUPPORTS_HUGEPAGES
1686 help
1687 MIPS Technologies R10000-series processors.
1688
1689config CPU_RM7000
1690 bool "RM7000"
1691 depends on SYS_HAS_CPU_RM7000
1692 select CPU_HAS_PREFETCH
1693 select CPU_HAS_LOAD_STORE_LR
1694 select CPU_SUPPORTS_32BIT_KERNEL
1695 select CPU_SUPPORTS_64BIT_KERNEL
1696 select CPU_SUPPORTS_HIGHMEM
1697 select CPU_SUPPORTS_HUGEPAGES
1698
1699config CPU_SB1
1700 bool "SB1"
1701 depends on SYS_HAS_CPU_SB1
1702 select CPU_HAS_LOAD_STORE_LR
1703 select CPU_SUPPORTS_32BIT_KERNEL
1704 select CPU_SUPPORTS_64BIT_KERNEL
1705 select CPU_SUPPORTS_HIGHMEM
1706 select CPU_SUPPORTS_HUGEPAGES
1707 select WEAK_ORDERING
1708
1709config CPU_CAVIUM_OCTEON
1710 bool "Cavium Octeon processor"
1711 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1712 select CPU_HAS_PREFETCH
1713 select CPU_HAS_LOAD_STORE_LR
1714 select CPU_SUPPORTS_64BIT_KERNEL
1715 select WEAK_ORDERING
1716 select CPU_SUPPORTS_HIGHMEM
1717 select CPU_SUPPORTS_HUGEPAGES
1718 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1719 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1720 select MIPS_L1_CACHE_SHIFT_7
1721 select HAVE_KVM
1722 help
1723 The Cavium Octeon processor is a highly integrated chip containing
1724 many ethernet hardware widgets for networking tasks. The processor
1725 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1726 Full details can be found at http://www.caviumnetworks.com.
1727
1728config CPU_BMIPS
1729 bool "Broadcom BMIPS"
1730 depends on SYS_HAS_CPU_BMIPS
1731 select CPU_MIPS32
1732 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1733 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1734 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1735 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1736 select CPU_SUPPORTS_32BIT_KERNEL
1737 select DMA_NONCOHERENT
1738 select IRQ_MIPS_CPU
1739 select SWAP_IO_SPACE
1740 select WEAK_ORDERING
1741 select CPU_SUPPORTS_HIGHMEM
1742 select CPU_HAS_PREFETCH
1743 select CPU_HAS_LOAD_STORE_LR
1744 select CPU_SUPPORTS_CPUFREQ
1745 select MIPS_EXTERNAL_TIMER
1746 help
1747 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1748
1749config CPU_XLR
1750 bool "Netlogic XLR SoC"
1751 depends on SYS_HAS_CPU_XLR
1752 select CPU_HAS_LOAD_STORE_LR
1753 select CPU_SUPPORTS_32BIT_KERNEL
1754 select CPU_SUPPORTS_64BIT_KERNEL
1755 select CPU_SUPPORTS_HIGHMEM
1756 select CPU_SUPPORTS_HUGEPAGES
1757 select WEAK_ORDERING
1758 select WEAK_REORDERING_BEYOND_LLSC
1759 help
1760 Netlogic Microsystems XLR/XLS processors.
1761
1762config CPU_XLP
1763 bool "Netlogic XLP SoC"
1764 depends on SYS_HAS_CPU_XLP
1765 select CPU_SUPPORTS_32BIT_KERNEL
1766 select CPU_SUPPORTS_64BIT_KERNEL
1767 select CPU_SUPPORTS_HIGHMEM
1768 select WEAK_ORDERING
1769 select WEAK_REORDERING_BEYOND_LLSC
1770 select CPU_HAS_PREFETCH
1771 select CPU_HAS_LOAD_STORE_LR
1772 select CPU_MIPSR2
1773 select CPU_SUPPORTS_HUGEPAGES
1774 select MIPS_ASID_BITS_VARIABLE
1775 help
1776 Netlogic Microsystems XLP processors.
1777endchoice
1778
1779config CPU_MIPS32_3_5_FEATURES
1780 bool "MIPS32 Release 3.5 Features"
1781 depends on SYS_HAS_CPU_MIPS32_R3_5
1782 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1783 help
1784 Choose this option to build a kernel for release 2 or later of the
1785 MIPS32 architecture including features from the 3.5 release such as
1786 support for Enhanced Virtual Addressing (EVA).
1787
1788config CPU_MIPS32_3_5_EVA
1789 bool "Enhanced Virtual Addressing (EVA)"
1790 depends on CPU_MIPS32_3_5_FEATURES
1791 select EVA
1792 default y
1793 help
1794 Choose this option if you want to enable the Enhanced Virtual
1795 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1796 One of its primary benefits is an increase in the maximum size
1797 of lowmem (up to 3GB). If unsure, say 'N' here.
1798
1799config CPU_MIPS32_R5_FEATURES
1800 bool "MIPS32 Release 5 Features"
1801 depends on SYS_HAS_CPU_MIPS32_R5
1802 depends on CPU_MIPS32_R2
1803 help
1804 Choose this option to build a kernel for release 2 or later of the
1805 MIPS32 architecture including features from release 5 such as
1806 support for Extended Physical Addressing (XPA).
1807
1808config CPU_MIPS32_R5_XPA
1809 bool "Extended Physical Addressing (XPA)"
1810 depends on CPU_MIPS32_R5_FEATURES
1811 depends on !EVA
1812 depends on !PAGE_SIZE_4KB
1813 depends on SYS_SUPPORTS_HIGHMEM
1814 select XPA
1815 select HIGHMEM
1816 select PHYS_ADDR_T_64BIT
1817 default n
1818 help
1819 Choose this option if you want to enable the Extended Physical
1820 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1821 benefit is to increase physical addressing equal to or greater
1822 than 40 bits. Note that this has the side effect of turning on
1823 64-bit addressing which in turn makes the PTEs 64-bit in size.
1824 If unsure, say 'N' here.
1825
1826if CPU_LOONGSON2F
1827config CPU_NOP_WORKAROUNDS
1828 bool
1829
1830config CPU_JUMP_WORKAROUNDS
1831 bool
1832
1833config CPU_LOONGSON2F_WORKAROUNDS
1834 bool "Loongson 2F Workarounds"
1835 default y
1836 select CPU_NOP_WORKAROUNDS
1837 select CPU_JUMP_WORKAROUNDS
1838 help
1839 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1840 require workarounds. Without workarounds the system may hang
1841 unexpectedly. For more information please refer to the gas
1842 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1843
1844 Loongson 2F03 and later have fixed these issues and no workarounds
1845 are needed. The workarounds have no significant side effect on them
1846 but may decrease the performance of the system so this option should
1847 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1848 systems.
1849
1850 If unsure, please say Y.
1851endif # CPU_LOONGSON2F
1852
1853config SYS_SUPPORTS_ZBOOT
1854 bool
1855 select HAVE_KERNEL_GZIP
1856 select HAVE_KERNEL_BZIP2
1857 select HAVE_KERNEL_LZ4
1858 select HAVE_KERNEL_LZMA
1859 select HAVE_KERNEL_LZO
1860 select HAVE_KERNEL_XZ
1861
1862config SYS_SUPPORTS_ZBOOT_UART16550
1863 bool
1864 select SYS_SUPPORTS_ZBOOT
1865
1866config SYS_SUPPORTS_ZBOOT_UART_PROM
1867 bool
1868 select SYS_SUPPORTS_ZBOOT
1869
1870config CPU_LOONGSON2
1871 bool
1872 select CPU_SUPPORTS_32BIT_KERNEL
1873 select CPU_SUPPORTS_64BIT_KERNEL
1874 select CPU_SUPPORTS_HIGHMEM
1875 select CPU_SUPPORTS_HUGEPAGES
1876 select ARCH_HAS_PHYS_TO_DMA
1877 select CPU_HAS_LOAD_STORE_LR
1878
1879config CPU_LOONGSON1
1880 bool
1881 select CPU_MIPS32
1882 select CPU_MIPSR2
1883 select CPU_HAS_PREFETCH
1884 select CPU_HAS_LOAD_STORE_LR
1885 select CPU_SUPPORTS_32BIT_KERNEL
1886 select CPU_SUPPORTS_HIGHMEM
1887 select CPU_SUPPORTS_CPUFREQ
1888
1889config CPU_BMIPS32_3300
1890 select SMP_UP if SMP
1891 bool
1892
1893config CPU_BMIPS4350
1894 bool
1895 select SYS_SUPPORTS_SMP
1896 select SYS_SUPPORTS_HOTPLUG_CPU
1897
1898config CPU_BMIPS4380
1899 bool
1900 select MIPS_L1_CACHE_SHIFT_6
1901 select SYS_SUPPORTS_SMP
1902 select SYS_SUPPORTS_HOTPLUG_CPU
1903 select CPU_HAS_RIXI
1904
1905config CPU_BMIPS5000
1906 bool
1907 select MIPS_CPU_SCACHE
1908 select MIPS_L1_CACHE_SHIFT_7
1909 select SYS_SUPPORTS_SMP
1910 select SYS_SUPPORTS_HOTPLUG_CPU
1911 select CPU_HAS_RIXI
1912
1913config SYS_HAS_CPU_LOONGSON3
1914 bool
1915 select CPU_SUPPORTS_CPUFREQ
1916 select CPU_HAS_RIXI
1917
1918config SYS_HAS_CPU_LOONGSON2E
1919 bool
1920
1921config SYS_HAS_CPU_LOONGSON2F
1922 bool
1923 select CPU_SUPPORTS_CPUFREQ
1924 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1925 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1926
1927config SYS_HAS_CPU_LOONGSON1B
1928 bool
1929
1930config SYS_HAS_CPU_LOONGSON1C
1931 bool
1932
1933config SYS_HAS_CPU_MIPS32_R1
1934 bool
1935
1936config SYS_HAS_CPU_MIPS32_R2
1937 bool
1938
1939config SYS_HAS_CPU_MIPS32_R3_5
1940 bool
1941
1942config SYS_HAS_CPU_MIPS32_R5
1943 bool
1944 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1945
1946config SYS_HAS_CPU_MIPS32_R6
1947 bool
1948 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1949
1950config SYS_HAS_CPU_MIPS64_R1
1951 bool
1952
1953config SYS_HAS_CPU_MIPS64_R2
1954 bool
1955
1956config SYS_HAS_CPU_MIPS64_R6
1957 bool
1958 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1959
1960config SYS_HAS_CPU_R3000
1961 bool
1962
1963config SYS_HAS_CPU_TX39XX
1964 bool
1965
1966config SYS_HAS_CPU_VR41XX
1967 bool
1968
1969config SYS_HAS_CPU_R4300
1970 bool
1971
1972config SYS_HAS_CPU_R4X00
1973 bool
1974
1975config SYS_HAS_CPU_TX49XX
1976 bool
1977
1978config SYS_HAS_CPU_R5000
1979 bool
1980
1981config SYS_HAS_CPU_R5432
1982 bool
1983
1984config SYS_HAS_CPU_R5500
1985 bool
1986
1987config SYS_HAS_CPU_NEVADA
1988 bool
1989
1990config SYS_HAS_CPU_R8000
1991 bool
1992
1993config SYS_HAS_CPU_R10000
1994 bool
1995 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1996
1997config SYS_HAS_CPU_RM7000
1998 bool
1999
2000config SYS_HAS_CPU_SB1
2001 bool
2002
2003config SYS_HAS_CPU_CAVIUM_OCTEON
2004 bool
2005
2006config SYS_HAS_CPU_BMIPS
2007 bool
2008
2009config SYS_HAS_CPU_BMIPS32_3300
2010 bool
2011 select SYS_HAS_CPU_BMIPS
2012
2013config SYS_HAS_CPU_BMIPS4350
2014 bool
2015 select SYS_HAS_CPU_BMIPS
2016
2017config SYS_HAS_CPU_BMIPS4380
2018 bool
2019 select SYS_HAS_CPU_BMIPS
2020
2021config SYS_HAS_CPU_BMIPS5000
2022 bool
2023 select SYS_HAS_CPU_BMIPS
2024 select ARCH_HAS_SYNC_DMA_FOR_CPU
2025
2026config SYS_HAS_CPU_XLR
2027 bool
2028
2029config SYS_HAS_CPU_XLP
2030 bool
2031
2032#
2033# CPU may reorder R->R, R->W, W->R, W->W
2034# Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2035#
2036config WEAK_ORDERING
2037 bool
2038
2039#
2040# CPU may reorder reads and writes beyond LL/SC
2041# CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2042#
2043config WEAK_REORDERING_BEYOND_LLSC
2044 bool
2045endmenu
2046
2047#
2048# These two indicate any level of the MIPS32 and MIPS64 architecture
2049#
2050config CPU_MIPS32
2051 bool
2052 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2053
2054config CPU_MIPS64
2055 bool
2056 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2057
2058#
2059# These indicate the revision of the architecture
2060#
2061config CPU_MIPSR1
2062 bool
2063 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2064
2065config CPU_MIPSR2
2066 bool
2067 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2068 select CPU_HAS_RIXI
2069 select MIPS_SPRAM
2070
2071config CPU_MIPSR6
2072 bool
2073 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2074 select CPU_HAS_RIXI
2075 select HAVE_ARCH_BITREVERSE
2076 select MIPS_ASID_BITS_VARIABLE
2077 select MIPS_CRC_SUPPORT
2078 select MIPS_SPRAM
2079
2080config TARGET_ISA_REV
2081 int
2082 default 1 if CPU_MIPSR1
2083 default 2 if CPU_MIPSR2
2084 default 6 if CPU_MIPSR6
2085 default 0
2086 help
2087 Reflects the ISA revision being targeted by the kernel build. This
2088 is effectively the Kconfig equivalent of MIPS_ISA_REV.
2089
2090config EVA
2091 bool
2092
2093config XPA
2094 bool
2095
2096config SYS_SUPPORTS_32BIT_KERNEL
2097 bool
2098config SYS_SUPPORTS_64BIT_KERNEL
2099 bool
2100config CPU_SUPPORTS_32BIT_KERNEL
2101 bool
2102config CPU_SUPPORTS_64BIT_KERNEL
2103 bool
2104config CPU_SUPPORTS_CPUFREQ
2105 bool
2106config CPU_SUPPORTS_ADDRWINCFG
2107 bool
2108config CPU_SUPPORTS_HUGEPAGES
2109 bool
2110config CPU_SUPPORTS_UNCACHED_ACCELERATED
2111 bool
2112config MIPS_PGD_C0_CONTEXT
2113 bool
2114 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2115
2116#
2117# Set to y for ptrace access to watch registers.
2118#
2119config HARDWARE_WATCHPOINTS
2120 bool
2121 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2122
2123menu "Kernel type"
2124
2125choice
2126 prompt "Kernel code model"
2127 help
2128 You should only select this option if you have a workload that
2129 actually benefits from 64-bit processing or if your machine has
2130 large memory. You will only be presented a single option in this
2131 menu if your system does not support both 32-bit and 64-bit kernels.
2132
2133config 32BIT
2134 bool "32-bit kernel"
2135 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2136 select TRAD_SIGNALS
2137 help
2138 Select this option if you want to build a 32-bit kernel.
2139
2140config 64BIT
2141 bool "64-bit kernel"
2142 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2143 help
2144 Select this option if you want to build a 64-bit kernel.
2145
2146endchoice
2147
2148config KVM_GUEST
2149 bool "KVM Guest Kernel"
2150 depends on BROKEN_ON_SMP
2151 help
2152 Select this option if building a guest kernel for KVM (Trap & Emulate)
2153 mode.
2154
2155config KVM_GUEST_TIMER_FREQ
2156 int "Count/Compare Timer Frequency (MHz)"
2157 depends on KVM_GUEST
2158 default 100
2159 help
2160 Set this to non-zero if building a guest kernel for KVM to skip RTC
2161 emulation when determining guest CPU Frequency. Instead, the guest's
2162 timer frequency is specified directly.
2163
2164config MIPS_VA_BITS_48
2165 bool "48 bits virtual memory"
2166 depends on 64BIT
2167 help
2168 Support a maximum at least 48 bits of application virtual
2169 memory. Default is 40 bits or less, depending on the CPU.
2170 For page sizes 16k and above, this option results in a small
2171 memory overhead for page tables. For 4k page size, a fourth
2172 level of page tables is added which imposes both a memory
2173 overhead as well as slower TLB fault handling.
2174
2175 If unsure, say N.
2176
2177choice
2178 prompt "Kernel page size"
2179 default PAGE_SIZE_4KB
2180
2181config PAGE_SIZE_4KB
2182 bool "4kB"
2183 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2184 help
2185 This option select the standard 4kB Linux page size. On some
2186 R3000-family processors this is the only available page size. Using
2187 4kB page size will minimize memory consumption and is therefore
2188 recommended for low memory systems.
2189
2190config PAGE_SIZE_8KB
2191 bool "8kB"
2192 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2193 depends on !MIPS_VA_BITS_48
2194 help
2195 Using 8kB page size will result in higher performance kernel at
2196 the price of higher memory consumption. This option is available
2197 only on R8000 and cnMIPS processors. Note that you will need a
2198 suitable Linux distribution to support this.
2199
2200config PAGE_SIZE_16KB
2201 bool "16kB"
2202 depends on !CPU_R3000 && !CPU_TX39XX
2203 help
2204 Using 16kB page size will result in higher performance kernel at
2205 the price of higher memory consumption. This option is available on
2206 all non-R3000 family processors. Note that you will need a suitable
2207 Linux distribution to support this.
2208
2209config PAGE_SIZE_32KB
2210 bool "32kB"
2211 depends on CPU_CAVIUM_OCTEON
2212 depends on !MIPS_VA_BITS_48
2213 help
2214 Using 32kB page size will result in higher performance kernel at
2215 the price of higher memory consumption. This option is available
2216 only on cnMIPS cores. Note that you will need a suitable Linux
2217 distribution to support this.
2218
2219config PAGE_SIZE_64KB
2220 bool "64kB"
2221 depends on !CPU_R3000 && !CPU_TX39XX
2222 help
2223 Using 64kB page size will result in higher performance kernel at
2224 the price of higher memory consumption. This option is available on
2225 all non-R3000 family processor. Not that at the time of this
2226 writing this option is still high experimental.
2227
2228endchoice
2229
2230config FORCE_MAX_ZONEORDER
2231 int "Maximum zone order"
2232 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2233 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2234 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2235 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2236 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2237 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2238 range 11 64
2239 default "11"
2240 help
2241 The kernel memory allocator divides physically contiguous memory
2242 blocks into "zones", where each zone is a power of two number of
2243 pages. This option selects the largest power of two that the kernel
2244 keeps in the memory allocator. If you need to allocate very large
2245 blocks of physically contiguous memory, then you may need to
2246 increase this value.
2247
2248 This config option is actually maximum order plus one. For example,
2249 a value of 11 means that the largest free memory block is 2^10 pages.
2250
2251 The page size is not necessarily 4KB. Keep this in mind
2252 when choosing a value for this option.
2253
2254config BOARD_SCACHE
2255 bool
2256
2257config IP22_CPU_SCACHE
2258 bool
2259 select BOARD_SCACHE
2260
2261#
2262# Support for a MIPS32 / MIPS64 style S-caches
2263#
2264config MIPS_CPU_SCACHE
2265 bool
2266 select BOARD_SCACHE
2267
2268config R5000_CPU_SCACHE
2269 bool
2270 select BOARD_SCACHE
2271
2272config RM7000_CPU_SCACHE
2273 bool
2274 select BOARD_SCACHE
2275
2276config SIBYTE_DMA_PAGEOPS
2277 bool "Use DMA to clear/copy pages"
2278 depends on CPU_SB1
2279 help
2280 Instead of using the CPU to zero and copy pages, use a Data Mover
2281 channel. These DMA channels are otherwise unused by the standard
2282 SiByte Linux port. Seems to give a small performance benefit.
2283
2284config CPU_HAS_PREFETCH
2285 bool
2286
2287config CPU_GENERIC_DUMP_TLB
2288 bool
2289 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
2290
2291config MIPS_FP_SUPPORT
2292 bool "Floating Point support" if EXPERT
2293 default y
2294 help
2295 Select y to include support for floating point in the kernel
2296 including initialization of FPU hardware, FP context save & restore
2297 and emulation of an FPU where necessary. Without this support any
2298 userland program attempting to use floating point instructions will
2299 receive a SIGILL.
2300
2301 If you know that your userland will not attempt to use floating point
2302 instructions then you can say n here to shrink the kernel a little.
2303
2304 If unsure, say y.
2305
2306config CPU_R2300_FPU
2307 bool
2308 depends on MIPS_FP_SUPPORT
2309 default y if CPU_R3000 || CPU_TX39XX
2310
2311config CPU_R4K_FPU
2312 bool
2313 depends on MIPS_FP_SUPPORT
2314 default y if !CPU_R2300_FPU
2315
2316config CPU_R4K_CACHE_TLB
2317 bool
2318 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2319
2320config MIPS_MT_SMP
2321 bool "MIPS MT SMP support (1 TC on each available VPE)"
2322 default y
2323 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2324 select CPU_MIPSR2_IRQ_VI
2325 select CPU_MIPSR2_IRQ_EI
2326 select SYNC_R4K
2327 select MIPS_MT
2328 select SMP
2329 select SMP_UP
2330 select SYS_SUPPORTS_SMP
2331 select SYS_SUPPORTS_SCHED_SMT
2332 select MIPS_PERF_SHARED_TC_COUNTERS
2333 help
2334 This is a kernel model which is known as SMVP. This is supported
2335 on cores with the MT ASE and uses the available VPEs to implement
2336 virtual processors which supports SMP. This is equivalent to the
2337 Intel Hyperthreading feature. For further information go to
2338 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2339
2340config MIPS_MT
2341 bool
2342
2343config SCHED_SMT
2344 bool "SMT (multithreading) scheduler support"
2345 depends on SYS_SUPPORTS_SCHED_SMT
2346 default n
2347 help
2348 SMT scheduler support improves the CPU scheduler's decision making
2349 when dealing with MIPS MT enabled cores at a cost of slightly
2350 increased overhead in some places. If unsure say N here.
2351
2352config SYS_SUPPORTS_SCHED_SMT
2353 bool
2354
2355config SYS_SUPPORTS_MULTITHREADING
2356 bool
2357
2358config MIPS_MT_FPAFF
2359 bool "Dynamic FPU affinity for FP-intensive threads"
2360 default y
2361 depends on MIPS_MT_SMP
2362
2363config MIPSR2_TO_R6_EMULATOR
2364 bool "MIPS R2-to-R6 emulator"
2365 depends on CPU_MIPSR6
2366 depends on MIPS_FP_SUPPORT
2367 default y
2368 help
2369 Choose this option if you want to run non-R6 MIPS userland code.
2370 Even if you say 'Y' here, the emulator will still be disabled by
2371 default. You can enable it using the 'mipsr2emu' kernel option.
2372 The only reason this is a build-time option is to save ~14K from the
2373 final kernel image.
2374
2375config SYS_SUPPORTS_VPE_LOADER
2376 bool
2377 depends on SYS_SUPPORTS_MULTITHREADING
2378 help
2379 Indicates that the platform supports the VPE loader, and provides
2380 physical_memsize.
2381
2382config MIPS_VPE_LOADER
2383 bool "VPE loader support."
2384 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2385 select CPU_MIPSR2_IRQ_VI
2386 select CPU_MIPSR2_IRQ_EI
2387 select MIPS_MT
2388 help
2389 Includes a loader for loading an elf relocatable object
2390 onto another VPE and running it.
2391
2392config MIPS_VPE_LOADER_CMP
2393 bool
2394 default "y"
2395 depends on MIPS_VPE_LOADER && MIPS_CMP
2396
2397config MIPS_VPE_LOADER_MT
2398 bool
2399 default "y"
2400 depends on MIPS_VPE_LOADER && !MIPS_CMP
2401
2402config MIPS_VPE_LOADER_TOM
2403 bool "Load VPE program into memory hidden from linux"
2404 depends on MIPS_VPE_LOADER
2405 default y
2406 help
2407 The loader can use memory that is present but has been hidden from
2408 Linux using the kernel command line option "mem=xxMB". It's up to
2409 you to ensure the amount you put in the option and the space your
2410 program requires is less or equal to the amount physically present.
2411
2412config MIPS_VPE_APSP_API
2413 bool "Enable support for AP/SP API (RTLX)"
2414 depends on MIPS_VPE_LOADER
2415
2416config MIPS_VPE_APSP_API_CMP
2417 bool
2418 default "y"
2419 depends on MIPS_VPE_APSP_API && MIPS_CMP
2420
2421config MIPS_VPE_APSP_API_MT
2422 bool
2423 default "y"
2424 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2425
2426config MIPS_CMP
2427 bool "MIPS CMP framework support (DEPRECATED)"
2428 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2429 select SMP
2430 select SYNC_R4K
2431 select SYS_SUPPORTS_SMP
2432 select WEAK_ORDERING
2433 default n
2434 help
2435 Select this if you are using a bootloader which implements the "CMP
2436 framework" protocol (ie. YAMON) and want your kernel to make use of
2437 its ability to start secondary CPUs.
2438
2439 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2440 instead of this.
2441
2442config MIPS_CPS
2443 bool "MIPS Coherent Processing System support"
2444 depends on SYS_SUPPORTS_MIPS_CPS
2445 select MIPS_CM
2446 select MIPS_CPS_PM if HOTPLUG_CPU
2447 select SMP
2448 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2449 select SYS_SUPPORTS_HOTPLUG_CPU
2450 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2451 select SYS_SUPPORTS_SMP
2452 select WEAK_ORDERING
2453 help
2454 Select this if you wish to run an SMP kernel across multiple cores
2455 within a MIPS Coherent Processing System. When this option is
2456 enabled the kernel will probe for other cores and boot them with
2457 no external assistance. It is safe to enable this when hardware
2458 support is unavailable.
2459
2460config MIPS_CPS_PM
2461 depends on MIPS_CPS
2462 bool
2463
2464config MIPS_CM
2465 bool
2466 select MIPS_CPC
2467
2468config MIPS_CPC
2469 bool
2470
2471config SB1_PASS_2_WORKAROUNDS
2472 bool
2473 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2474 default y
2475
2476config SB1_PASS_2_1_WORKAROUNDS
2477 bool
2478 depends on CPU_SB1 && CPU_SB1_PASS_2
2479 default y
2480
2481choice
2482 prompt "SmartMIPS or microMIPS ASE support"
2483
2484config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2485 bool "None"
2486 help
2487 Select this if you want neither microMIPS nor SmartMIPS support
2488
2489config CPU_HAS_SMARTMIPS
2490 depends on SYS_SUPPORTS_SMARTMIPS
2491 bool "SmartMIPS"
2492 help
2493 SmartMIPS is a extension of the MIPS32 architecture aimed at
2494 increased security at both hardware and software level for
2495 smartcards. Enabling this option will allow proper use of the
2496 SmartMIPS instructions by Linux applications. However a kernel with
2497 this option will not work on a MIPS core without SmartMIPS core. If
2498 you don't know you probably don't have SmartMIPS and should say N
2499 here.
2500
2501config CPU_MICROMIPS
2502 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2503 bool "microMIPS"
2504 help
2505 When this option is enabled the kernel will be built using the
2506 microMIPS ISA
2507
2508endchoice
2509
2510config CPU_HAS_MSA
2511 bool "Support for the MIPS SIMD Architecture"
2512 depends on CPU_SUPPORTS_MSA
2513 depends on MIPS_FP_SUPPORT
2514 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2515 help
2516 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2517 and a set of SIMD instructions to operate on them. When this option
2518 is enabled the kernel will support allocating & switching MSA
2519 vector register contexts. If you know that your kernel will only be
2520 running on CPUs which do not support MSA or that your userland will
2521 not be making use of it then you may wish to say N here to reduce
2522 the size & complexity of your kernel.
2523
2524 If unsure, say Y.
2525
2526config CPU_HAS_WB
2527 bool
2528
2529config XKS01
2530 bool
2531
2532config CPU_HAS_RIXI
2533 bool
2534
2535config CPU_HAS_LOAD_STORE_LR
2536 bool
2537 help
2538 CPU has support for unaligned load and store instructions:
2539 LWL, LWR, SWL, SWR (Load/store word left/right).
2540 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit systems).
2541
2542#
2543# Vectored interrupt mode is an R2 feature
2544#
2545config CPU_MIPSR2_IRQ_VI
2546 bool
2547
2548#
2549# Extended interrupt mode is an R2 feature
2550#
2551config CPU_MIPSR2_IRQ_EI
2552 bool
2553
2554config CPU_HAS_SYNC
2555 bool
2556 depends on !CPU_R3000
2557 default y
2558
2559#
2560# CPU non-features
2561#
2562config CPU_DADDI_WORKAROUNDS
2563 bool
2564
2565config CPU_R4000_WORKAROUNDS
2566 bool
2567 select CPU_R4400_WORKAROUNDS
2568
2569config CPU_R4400_WORKAROUNDS
2570 bool
2571
2572config MIPS_ASID_SHIFT
2573 int
2574 default 6 if CPU_R3000 || CPU_TX39XX
2575 default 4 if CPU_R8000
2576 default 0
2577
2578config MIPS_ASID_BITS
2579 int
2580 default 0 if MIPS_ASID_BITS_VARIABLE
2581 default 6 if CPU_R3000 || CPU_TX39XX
2582 default 8
2583
2584config MIPS_ASID_BITS_VARIABLE
2585 bool
2586
2587config MIPS_CRC_SUPPORT
2588 bool
2589
2590#
2591# - Highmem only makes sense for the 32-bit kernel.
2592# - The current highmem code will only work properly on physically indexed
2593# caches such as R3000, SB1, R7000 or those that look like they're virtually
2594# indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2595# moment we protect the user and offer the highmem option only on machines
2596# where it's known to be safe. This will not offer highmem on a few systems
2597# such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2598# indexed CPUs but we're playing safe.
2599# - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2600# know they might have memory configurations that could make use of highmem
2601# support.
2602#
2603config HIGHMEM
2604 bool "High Memory Support"
2605 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2606
2607config CPU_SUPPORTS_HIGHMEM
2608 bool
2609
2610config SYS_SUPPORTS_HIGHMEM
2611 bool
2612
2613config SYS_SUPPORTS_SMARTMIPS
2614 bool
2615
2616config SYS_SUPPORTS_MICROMIPS
2617 bool
2618
2619config SYS_SUPPORTS_MIPS16
2620 bool
2621 help
2622 This option must be set if a kernel might be executed on a MIPS16-
2623 enabled CPU even if MIPS16 is not actually being used. In other
2624 words, it makes the kernel MIPS16-tolerant.
2625
2626config CPU_SUPPORTS_MSA
2627 bool
2628
2629config ARCH_FLATMEM_ENABLE
2630 def_bool y
2631 depends on !NUMA && !CPU_LOONGSON2
2632
2633config ARCH_DISCONTIGMEM_ENABLE
2634 bool
2635 default y if SGI_IP27
2636 help
2637 Say Y to support efficient handling of discontiguous physical memory,
2638 for architectures which are either NUMA (Non-Uniform Memory Access)
2639 or have huge holes in the physical address space for other reasons.
2640 See <file:Documentation/vm/numa.rst> for more.
2641
2642config ARCH_SPARSEMEM_ENABLE
2643 bool
2644 select SPARSEMEM_STATIC
2645
2646config NUMA
2647 bool "NUMA Support"
2648 depends on SYS_SUPPORTS_NUMA
2649 help
2650 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2651 Access). This option improves performance on systems with more
2652 than two nodes; on two node systems it is generally better to
2653 leave it disabled; on single node systems disable this option
2654 disabled.
2655
2656config SYS_SUPPORTS_NUMA
2657 bool
2658
2659config RELOCATABLE
2660 bool "Relocatable kernel"
2661 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2662 help
2663 This builds a kernel image that retains relocation information
2664 so it can be loaded someplace besides the default 1MB.
2665 The relocations make the kernel binary about 15% larger,
2666 but are discarded at runtime
2667
2668config RELOCATION_TABLE_SIZE
2669 hex "Relocation table size"
2670 depends on RELOCATABLE
2671 range 0x0 0x01000000
2672 default "0x00100000"
2673 ---help---
2674 A table of relocation data will be appended to the kernel binary
2675 and parsed at boot to fix up the relocated kernel.
2676
2677 This option allows the amount of space reserved for the table to be
2678 adjusted, although the default of 1Mb should be ok in most cases.
2679
2680 The build will fail and a valid size suggested if this is too small.
2681
2682 If unsure, leave at the default value.
2683
2684config RANDOMIZE_BASE
2685 bool "Randomize the address of the kernel image"
2686 depends on RELOCATABLE
2687 ---help---
2688 Randomizes the physical and virtual address at which the
2689 kernel image is loaded, as a security feature that
2690 deters exploit attempts relying on knowledge of the location
2691 of kernel internals.
2692
2693 Entropy is generated using any coprocessor 0 registers available.
2694
2695 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2696
2697 If unsure, say N.
2698
2699config RANDOMIZE_BASE_MAX_OFFSET
2700 hex "Maximum kASLR offset" if EXPERT
2701 depends on RANDOMIZE_BASE
2702 range 0x0 0x40000000 if EVA || 64BIT
2703 range 0x0 0x08000000
2704 default "0x01000000"
2705 ---help---
2706 When kASLR is active, this provides the maximum offset that will
2707 be applied to the kernel image. It should be set according to the
2708 amount of physical RAM available in the target system minus
2709 PHYSICAL_START and must be a power of 2.
2710
2711 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2712 EVA or 64-bit. The default is 16Mb.
2713
2714config NODES_SHIFT
2715 int
2716 default "6"
2717 depends on NEED_MULTIPLE_NODES
2718
2719config HW_PERF_EVENTS
2720 bool "Enable hardware performance counter support for perf events"
2721 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2722 default y
2723 help
2724 Enable hardware performance counter support for perf events. If
2725 disabled, perf events will use software events only.
2726
2727config SMP
2728 bool "Multi-Processing support"
2729 depends on SYS_SUPPORTS_SMP
2730 help
2731 This enables support for systems with more than one CPU. If you have
2732 a system with only one CPU, say N. If you have a system with more
2733 than one CPU, say Y.
2734
2735 If you say N here, the kernel will run on uni- and multiprocessor
2736 machines, but will use only one CPU of a multiprocessor machine. If
2737 you say Y here, the kernel will run on many, but not all,
2738 uniprocessor machines. On a uniprocessor machine, the kernel
2739 will run faster if you say N here.
2740
2741 People using multiprocessor machines who say Y here should also say
2742 Y to "Enhanced Real Time Clock Support", below.
2743
2744 See also the SMP-HOWTO available at
2745 <http://www.tldp.org/docs.html#howto>.
2746
2747 If you don't know what to do here, say N.
2748
2749config HOTPLUG_CPU
2750 bool "Support for hot-pluggable CPUs"
2751 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2752 help
2753 Say Y here to allow turning CPUs off and on. CPUs can be
2754 controlled through /sys/devices/system/cpu.
2755 (Note: power management support will enable this option
2756 automatically on SMP systems. )
2757 Say N if you want to disable CPU hotplug.
2758
2759config SMP_UP
2760 bool
2761
2762config SYS_SUPPORTS_MIPS_CMP
2763 bool
2764
2765config SYS_SUPPORTS_MIPS_CPS
2766 bool
2767
2768config SYS_SUPPORTS_SMP
2769 bool
2770
2771config NR_CPUS_DEFAULT_4
2772 bool
2773
2774config NR_CPUS_DEFAULT_8
2775 bool
2776
2777config NR_CPUS_DEFAULT_16
2778 bool
2779
2780config NR_CPUS_DEFAULT_32
2781 bool
2782
2783config NR_CPUS_DEFAULT_64
2784 bool
2785
2786config NR_CPUS
2787 int "Maximum number of CPUs (2-256)"
2788 range 2 256
2789 depends on SMP
2790 default "4" if NR_CPUS_DEFAULT_4
2791 default "8" if NR_CPUS_DEFAULT_8
2792 default "16" if NR_CPUS_DEFAULT_16
2793 default "32" if NR_CPUS_DEFAULT_32
2794 default "64" if NR_CPUS_DEFAULT_64
2795 help
2796 This allows you to specify the maximum number of CPUs which this
2797 kernel will support. The maximum supported value is 32 for 32-bit
2798 kernel and 64 for 64-bit kernels; the minimum value which makes
2799 sense is 1 for Qemu (useful only for kernel debugging purposes)
2800 and 2 for all others.
2801
2802 This is purely to save memory - each supported CPU adds
2803 approximately eight kilobytes to the kernel image. For best
2804 performance should round up your number of processors to the next
2805 power of two.
2806
2807config MIPS_PERF_SHARED_TC_COUNTERS
2808 bool
2809
2810config MIPS_NR_CPU_NR_MAP_1024
2811 bool
2812
2813config MIPS_NR_CPU_NR_MAP
2814 int
2815 depends on SMP
2816 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2817 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2818
2819#
2820# Timer Interrupt Frequency Configuration
2821#
2822
2823choice
2824 prompt "Timer frequency"
2825 default HZ_250
2826 help
2827 Allows the configuration of the timer frequency.
2828
2829 config HZ_24
2830 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2831
2832 config HZ_48
2833 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2834
2835 config HZ_100
2836 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2837
2838 config HZ_128
2839 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2840
2841 config HZ_250
2842 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2843
2844 config HZ_256
2845 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2846
2847 config HZ_1000
2848 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2849
2850 config HZ_1024
2851 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2852
2853endchoice
2854
2855config SYS_SUPPORTS_24HZ
2856 bool
2857
2858config SYS_SUPPORTS_48HZ
2859 bool
2860
2861config SYS_SUPPORTS_100HZ
2862 bool
2863
2864config SYS_SUPPORTS_128HZ
2865 bool
2866
2867config SYS_SUPPORTS_250HZ
2868 bool
2869
2870config SYS_SUPPORTS_256HZ
2871 bool
2872
2873config SYS_SUPPORTS_1000HZ
2874 bool
2875
2876config SYS_SUPPORTS_1024HZ
2877 bool
2878
2879config SYS_SUPPORTS_ARBIT_HZ
2880 bool
2881 default y if !SYS_SUPPORTS_24HZ && \
2882 !SYS_SUPPORTS_48HZ && \
2883 !SYS_SUPPORTS_100HZ && \
2884 !SYS_SUPPORTS_128HZ && \
2885 !SYS_SUPPORTS_250HZ && \
2886 !SYS_SUPPORTS_256HZ && \
2887 !SYS_SUPPORTS_1000HZ && \
2888 !SYS_SUPPORTS_1024HZ
2889
2890config HZ
2891 int
2892 default 24 if HZ_24
2893 default 48 if HZ_48
2894 default 100 if HZ_100
2895 default 128 if HZ_128
2896 default 250 if HZ_250
2897 default 256 if HZ_256
2898 default 1000 if HZ_1000
2899 default 1024 if HZ_1024
2900
2901config SCHED_HRTICK
2902 def_bool HIGH_RES_TIMERS
2903
2904config KEXEC
2905 bool "Kexec system call"
2906 select KEXEC_CORE
2907 help
2908 kexec is a system call that implements the ability to shutdown your
2909 current kernel, and to start another kernel. It is like a reboot
2910 but it is independent of the system firmware. And like a reboot
2911 you can start any kernel with it, not just Linux.
2912
2913 The name comes from the similarity to the exec system call.
2914
2915 It is an ongoing process to be certain the hardware in a machine
2916 is properly shutdown, so do not be surprised if this code does not
2917 initially work for you. As of this writing the exact hardware
2918 interface is strongly in flux, so no good recommendation can be
2919 made.
2920
2921config CRASH_DUMP
2922 bool "Kernel crash dumps"
2923 help
2924 Generate crash dump after being started by kexec.
2925 This should be normally only set in special crash dump kernels
2926 which are loaded in the main kernel with kexec-tools into
2927 a specially reserved region and then later executed after
2928 a crash by kdump/kexec. The crash dump kernel must be compiled
2929 to a memory address not used by the main kernel or firmware using
2930 PHYSICAL_START.
2931
2932config PHYSICAL_START
2933 hex "Physical address where the kernel is loaded"
2934 default "0xffffffff84000000"
2935 depends on CRASH_DUMP
2936 help
2937 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2938 If you plan to use kernel for capturing the crash dump change
2939 this value to start of the reserved region (the "X" value as
2940 specified in the "crashkernel=YM@XM" command line boot parameter
2941 passed to the panic-ed kernel).
2942
2943config SECCOMP
2944 bool "Enable seccomp to safely compute untrusted bytecode"
2945 depends on PROC_FS
2946 default y
2947 help
2948 This kernel feature is useful for number crunching applications
2949 that may need to compute untrusted bytecode during their
2950 execution. By using pipes or other transports made available to
2951 the process as file descriptors supporting the read/write
2952 syscalls, it's possible to isolate those applications in
2953 their own address space using seccomp. Once seccomp is
2954 enabled via /proc/<pid>/seccomp, it cannot be disabled
2955 and the task is only allowed to execute a few safe syscalls
2956 defined by each seccomp mode.
2957
2958 If unsure, say Y. Only embedded should say N here.
2959
2960config MIPS_O32_FP64_SUPPORT
2961 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
2962 depends on 32BIT || MIPS32_O32
2963 help
2964 When this is enabled, the kernel will support use of 64-bit floating
2965 point registers with binaries using the O32 ABI along with the
2966 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2967 32-bit MIPS systems this support is at the cost of increasing the
2968 size and complexity of the compiled FPU emulator. Thus if you are
2969 running a MIPS32 system and know that none of your userland binaries
2970 will require 64-bit floating point, you may wish to reduce the size
2971 of your kernel & potentially improve FP emulation performance by
2972 saying N here.
2973
2974 Although binutils currently supports use of this flag the details
2975 concerning its effect upon the O32 ABI in userland are still being
2976 worked on. In order to avoid userland becoming dependant upon current
2977 behaviour before the details have been finalised, this option should
2978 be considered experimental and only enabled by those working upon
2979 said details.
2980
2981 If unsure, say N.
2982
2983config USE_OF
2984 bool
2985 select OF
2986 select OF_EARLY_FLATTREE
2987 select IRQ_DOMAIN
2988
2989config UHI_BOOT
2990 bool
2991
2992config BUILTIN_DTB
2993 bool
2994
2995choice
2996 prompt "Kernel appended dtb support" if USE_OF
2997 default MIPS_NO_APPENDED_DTB
2998
2999 config MIPS_NO_APPENDED_DTB
3000 bool "None"
3001 help
3002 Do not enable appended dtb support.
3003
3004 config MIPS_ELF_APPENDED_DTB
3005 bool "vmlinux"
3006 help
3007 With this option, the boot code will look for a device tree binary
3008 DTB) included in the vmlinux ELF section .appended_dtb. By default
3009 it is empty and the DTB can be appended using binutils command
3010 objcopy:
3011
3012 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
3013
3014 This is meant as a backward compatiblity convenience for those
3015 systems with a bootloader that can't be upgraded to accommodate
3016 the documented boot protocol using a device tree.
3017
3018 config MIPS_RAW_APPENDED_DTB
3019 bool "vmlinux.bin or vmlinuz.bin"
3020 help
3021 With this option, the boot code will look for a device tree binary
3022 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
3023 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
3024
3025 This is meant as a backward compatibility convenience for those
3026 systems with a bootloader that can't be upgraded to accommodate
3027 the documented boot protocol using a device tree.
3028
3029 Beware that there is very little in terms of protection against
3030 this option being confused by leftover garbage in memory that might
3031 look like a DTB header after a reboot if no actual DTB is appended
3032 to vmlinux.bin. Do not leave this option active in a production kernel
3033 if you don't intend to always append a DTB.
3034endchoice
3035
3036choice
3037 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
3038 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
3039 !MIPS_MALTA && \
3040 !CAVIUM_OCTEON_SOC
3041 default MIPS_CMDLINE_FROM_BOOTLOADER
3042
3043 config MIPS_CMDLINE_FROM_DTB
3044 depends on USE_OF
3045 bool "Dtb kernel arguments if available"
3046
3047 config MIPS_CMDLINE_DTB_EXTEND
3048 depends on USE_OF
3049 bool "Extend dtb kernel arguments with bootloader arguments"
3050
3051 config MIPS_CMDLINE_FROM_BOOTLOADER
3052 bool "Bootloader kernel arguments if available"
3053
3054 config MIPS_CMDLINE_BUILTIN_EXTEND
3055 depends on CMDLINE_BOOL
3056 bool "Extend builtin kernel arguments with bootloader arguments"
3057endchoice
3058
3059endmenu
3060
3061config LOCKDEP_SUPPORT
3062 bool
3063 default y
3064
3065config STACKTRACE_SUPPORT
3066 bool
3067 default y
3068
3069config HAVE_LATENCYTOP_SUPPORT
3070 bool
3071 default y
3072
3073config PGTABLE_LEVELS
3074 int
3075 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3076 default 3 if 64BIT && !PAGE_SIZE_64KB
3077 default 2
3078
3079config MIPS_AUTO_PFN_OFFSET
3080 bool
3081
3082menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3083
3084config PCI_DRIVERS_GENERIC
3085 select PCI_DOMAINS_GENERIC if PCI
3086 bool
3087
3088config PCI_DRIVERS_LEGACY
3089 def_bool !PCI_DRIVERS_GENERIC
3090 select NO_GENERIC_PCI_IOPORT_MAP
3091 select PCI_DOMAINS if PCI
3092
3093#
3094# ISA support is now enabled via select. Too many systems still have the one
3095# or other ISA chip on the board that users don't know about so don't expect
3096# users to choose the right thing ...
3097#
3098config ISA
3099 bool
3100
3101config TC
3102 bool "TURBOchannel support"
3103 depends on MACH_DECSTATION
3104 help
3105 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3106 processors. TURBOchannel programming specifications are available
3107 at:
3108 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3109 and:
3110 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3111 Linux driver support status is documented at:
3112 <http://www.linux-mips.org/wiki/DECstation>
3113
3114config MMU
3115 bool
3116 default y
3117
3118config ARCH_MMAP_RND_BITS_MIN
3119 default 12 if 64BIT
3120 default 8
3121
3122config ARCH_MMAP_RND_BITS_MAX
3123 default 18 if 64BIT
3124 default 15
3125
3126config ARCH_MMAP_RND_COMPAT_BITS_MIN
3127 default 8
3128
3129config ARCH_MMAP_RND_COMPAT_BITS_MAX
3130 default 15
3131
3132config I8253
3133 bool
3134 select CLKSRC_I8253
3135 select CLKEVT_I8253
3136 select MIPS_EXTERNAL_TIMER
3137
3138config ZONE_DMA
3139 bool
3140
3141config ZONE_DMA32
3142 bool
3143
3144endmenu
3145
3146config TRAD_SIGNALS
3147 bool
3148
3149config MIPS32_COMPAT
3150 bool
3151
3152config COMPAT
3153 bool
3154
3155config SYSVIPC_COMPAT
3156 bool
3157
3158config MIPS32_O32
3159 bool "Kernel support for o32 binaries"
3160 depends on 64BIT
3161 select ARCH_WANT_OLD_COMPAT_IPC
3162 select COMPAT
3163 select MIPS32_COMPAT
3164 select SYSVIPC_COMPAT if SYSVIPC
3165 help
3166 Select this option if you want to run o32 binaries. These are pure
3167 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3168 existing binaries are in this format.
3169
3170 If unsure, say Y.
3171
3172config MIPS32_N32
3173 bool "Kernel support for n32 binaries"
3174 depends on 64BIT
3175 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3176 select COMPAT
3177 select MIPS32_COMPAT
3178 select SYSVIPC_COMPAT if SYSVIPC
3179 help
3180 Select this option if you want to run n32 binaries. These are
3181 64-bit binaries using 32-bit quantities for addressing and certain
3182 data that would normally be 64-bit. They are used in special
3183 cases.
3184
3185 If unsure, say N.
3186
3187config BINFMT_ELF32
3188 bool
3189 default y if MIPS32_O32 || MIPS32_N32
3190 select ELFCORE
3191
3192menu "Power management options"
3193
3194config ARCH_HIBERNATION_POSSIBLE
3195 def_bool y
3196 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3197
3198config ARCH_SUSPEND_POSSIBLE
3199 def_bool y
3200 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3201
3202source "kernel/power/Kconfig"
3203
3204endmenu
3205
3206config MIPS_EXTERNAL_TIMER
3207 bool
3208
3209menu "CPU Power Management"
3210
3211if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3212source "drivers/cpufreq/Kconfig"
3213endif
3214
3215source "drivers/cpuidle/Kconfig"
3216
3217endmenu
3218
3219source "drivers/firmware/Kconfig"
3220
3221source "arch/mips/kvm/Kconfig"