blob: 49c540790fd2d20bbeadca827f1cdce5150ccd6d [file] [log] [blame]
rjw1f884582022-01-06 17:20:42 +08001# SPDX-License-Identifier: GPL-2.0
2config MIPS
3 bool
4 default y
5 select ARCH_BINFMT_ELF_STATE
6 select ARCH_CLOCKSOURCE_DATA
7 select ARCH_DISCARD_MEMBLOCK
8 select ARCH_HAS_ELF_RANDOMIZE
9 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
10 select ARCH_MIGHT_HAVE_PC_PARPORT
11 select ARCH_MIGHT_HAVE_PC_SERIO
12 select ARCH_SUPPORTS_UPROBES
13 select ARCH_USE_BUILTIN_BSWAP
14 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
15 select ARCH_USE_QUEUED_RWLOCKS
16 select ARCH_USE_QUEUED_SPINLOCKS
17 select ARCH_WANT_IPC_PARSE_VERSION
18 select BUILDTIME_EXTABLE_SORT
19 select CLONE_BACKWARDS
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_IRQ_PROBE
26 select GENERIC_IRQ_SHOW
27 select GENERIC_PCI_IOMAP
28 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
29 select GENERIC_SMP_IDLE_THREAD
30 select GENERIC_TIME_VSYSCALL
31 select HANDLE_DOMAIN_IRQ
32 select HAVE_ARCH_COMPILER_H
33 select HAVE_ARCH_JUMP_LABEL
34 select HAVE_ARCH_KGDB
35 select HAVE_ARCH_MMAP_RND_BITS if MMU
36 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
37 select HAVE_ARCH_SECCOMP_FILTER
38 select HAVE_ARCH_TRACEHOOK
39 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
40 select HAVE_CBPF_JIT if (!64BIT && !CPU_MICROMIPS)
41 select HAVE_EBPF_JIT if (64BIT && !CPU_MICROMIPS)
42 select HAVE_CC_STACKPROTECTOR
43 select HAVE_CONTEXT_TRACKING
44 select HAVE_COPY_THREAD_TLS
45 select HAVE_C_RECORDMCOUNT
46 select HAVE_DEBUG_KMEMLEAK
47 select HAVE_DEBUG_STACKOVERFLOW
48 select HAVE_DMA_API_DEBUG
49 select HAVE_DMA_CONTIGUOUS
50 select HAVE_DYNAMIC_FTRACE
51 select HAVE_EXIT_THREAD
52 select HAVE_FTRACE_MCOUNT_RECORD
53 select HAVE_FUNCTION_GRAPH_TRACER
54 select HAVE_FUNCTION_TRACER
55 select HAVE_GENERIC_DMA_COHERENT
56 select HAVE_IDE
57 select HAVE_IRQ_EXIT_ON_IRQ_STACK
58 select HAVE_IRQ_TIME_ACCOUNTING
59 select HAVE_KPROBES
60 select HAVE_KRETPROBES
61 select HAVE_MEMBLOCK
62 select HAVE_MEMBLOCK_NODE_MAP
63 select HAVE_MOD_ARCH_SPECIFIC
64 select HAVE_NMI
65 select HAVE_OPROFILE
66 select HAVE_PERF_EVENTS
67 select HAVE_REGS_AND_STACK_ACCESS_API
68 select HAVE_SYSCALL_TRACEPOINTS
69 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
70 select IRQ_FORCED_THREADING
71 select MODULES_USE_ELF_RELA if MODULES && 64BIT
72 select MODULES_USE_ELF_REL if MODULES
73 select PERF_USE_VMALLOC
74 select RTC_LIB if !MACH_LOONGSON64
75 select SYSCTL_EXCEPTION_TRACE
76 select VIRT_TO_BUS
77
78menu "Machine selection"
79
80choice
81 prompt "System type"
82 default SGI_IP22
83
84config MIPS_GENERIC
85 bool "Generic board-agnostic MIPS kernel"
86 select BOOT_RAW
87 select BUILTIN_DTB
88 select CEVT_R4K
89 select CLKSRC_MIPS_GIC
90 select COMMON_CLK
91 select CPU_MIPSR2_IRQ_VI
92 select CPU_MIPSR2_IRQ_EI
93 select CSRC_R4K
94 select DMA_PERDEV_COHERENT
95 select HW_HAS_PCI
96 select IRQ_MIPS_CPU
97 select LIBFDT
98 select MIPS_CPU_SCACHE
99 select MIPS_GIC
100 select MIPS_L1_CACHE_SHIFT_7
101 select NO_EXCEPT_FILL
102 select PCI_DRIVERS_GENERIC
103 select PINCTRL
104 select SMP_UP if SMP
105 select SWAP_IO_SPACE
106 select SYS_HAS_CPU_MIPS32_R1
107 select SYS_HAS_CPU_MIPS32_R2
108 select SYS_HAS_CPU_MIPS32_R6
109 select SYS_HAS_CPU_MIPS64_R1
110 select SYS_HAS_CPU_MIPS64_R2
111 select SYS_HAS_CPU_MIPS64_R6
112 select SYS_SUPPORTS_32BIT_KERNEL
113 select SYS_SUPPORTS_64BIT_KERNEL
114 select SYS_SUPPORTS_BIG_ENDIAN
115 select SYS_SUPPORTS_HIGHMEM
116 select SYS_SUPPORTS_LITTLE_ENDIAN
117 select SYS_SUPPORTS_MICROMIPS
118 select SYS_SUPPORTS_MIPS_CPS
119 select SYS_SUPPORTS_MIPS16
120 select SYS_SUPPORTS_MULTITHREADING
121 select SYS_SUPPORTS_RELOCATABLE
122 select SYS_SUPPORTS_SMARTMIPS
123 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
124 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
125 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
126 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
127 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
128 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
129 select USE_OF
130 help
131 Select this to build a kernel which aims to support multiple boards,
132 generally using a flattened device tree passed from the bootloader
133 using the boot protocol defined in the UHI (Unified Hosting
134 Interface) specification.
135
136config MIPS_ALCHEMY
137 bool "Alchemy processor based machines"
138 select ARCH_PHYS_ADDR_T_64BIT
139 select CEVT_R4K
140 select CSRC_R4K
141 select IRQ_MIPS_CPU
142 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
143 select SYS_HAS_CPU_MIPS32_R1
144 select SYS_SUPPORTS_32BIT_KERNEL
145 select SYS_SUPPORTS_APM_EMULATION
146 select GPIOLIB
147 select SYS_SUPPORTS_ZBOOT
148 select COMMON_CLK
149
150config AR7
151 bool "Texas Instruments AR7"
152 select BOOT_ELF32
153 select DMA_NONCOHERENT
154 select CEVT_R4K
155 select CSRC_R4K
156 select IRQ_MIPS_CPU
157 select NO_EXCEPT_FILL
158 select SWAP_IO_SPACE
159 select SYS_HAS_CPU_MIPS32_R1
160 select SYS_HAS_EARLY_PRINTK
161 select SYS_SUPPORTS_32BIT_KERNEL
162 select SYS_SUPPORTS_LITTLE_ENDIAN
163 select SYS_SUPPORTS_MIPS16
164 select SYS_SUPPORTS_ZBOOT_UART16550
165 select GPIOLIB
166 select VLYNQ
167 select HAVE_CLK
168 help
169 Support for the Texas Instruments AR7 System-on-a-Chip
170 family: TNETD7100, 7200 and 7300.
171
172config ATH25
173 bool "Atheros AR231x/AR531x SoC support"
174 select CEVT_R4K
175 select CSRC_R4K
176 select DMA_NONCOHERENT
177 select IRQ_MIPS_CPU
178 select IRQ_DOMAIN
179 select SYS_HAS_CPU_MIPS32_R1
180 select SYS_SUPPORTS_BIG_ENDIAN
181 select SYS_SUPPORTS_32BIT_KERNEL
182 select SYS_HAS_EARLY_PRINTK
183 help
184 Support for Atheros AR231x and Atheros AR531x based boards
185
186config ATH79
187 bool "Atheros AR71XX/AR724X/AR913X based boards"
188 select ARCH_HAS_RESET_CONTROLLER
189 select BOOT_RAW
190 select CEVT_R4K
191 select CSRC_R4K
192 select DMA_NONCOHERENT
193 select GPIOLIB
194 select HAVE_CLK
195 select COMMON_CLK
196 select CLKDEV_LOOKUP
197 select IRQ_MIPS_CPU
198 select MIPS_MACHINE
199 select SYS_HAS_CPU_MIPS32_R2
200 select SYS_HAS_EARLY_PRINTK
201 select SYS_SUPPORTS_32BIT_KERNEL
202 select SYS_SUPPORTS_BIG_ENDIAN
203 select SYS_SUPPORTS_MIPS16
204 select SYS_SUPPORTS_ZBOOT_UART_PROM
205 select USE_OF
206 help
207 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
208
209config BMIPS_GENERIC
210 bool "Broadcom Generic BMIPS kernel"
211 select BOOT_RAW
212 select NO_EXCEPT_FILL
213 select USE_OF
214 select CEVT_R4K
215 select CSRC_R4K
216 select SYNC_R4K
217 select COMMON_CLK
218 select BCM6345_L1_IRQ
219 select BCM7038_L1_IRQ
220 select BCM7120_L2_IRQ
221 select BRCMSTB_L2_IRQ
222 select IRQ_MIPS_CPU
223 select DMA_NONCOHERENT
224 select SYS_SUPPORTS_32BIT_KERNEL
225 select SYS_SUPPORTS_LITTLE_ENDIAN
226 select SYS_SUPPORTS_BIG_ENDIAN
227 select SYS_SUPPORTS_HIGHMEM
228 select SYS_HAS_CPU_BMIPS32_3300
229 select SYS_HAS_CPU_BMIPS4350
230 select SYS_HAS_CPU_BMIPS4380
231 select SYS_HAS_CPU_BMIPS5000
232 select SWAP_IO_SPACE
233 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
234 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
235 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
236 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
237 help
238 Build a generic DT-based kernel image that boots on select
239 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
240 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
241 must be set appropriately for your board.
242
243config BCM47XX
244 bool "Broadcom BCM47XX based boards"
245 select BOOT_RAW
246 select CEVT_R4K
247 select CSRC_R4K
248 select DMA_NONCOHERENT
249 select HW_HAS_PCI
250 select IRQ_MIPS_CPU
251 select SYS_HAS_CPU_MIPS32_R1
252 select NO_EXCEPT_FILL
253 select SYS_SUPPORTS_32BIT_KERNEL
254 select SYS_SUPPORTS_LITTLE_ENDIAN
255 select SYS_SUPPORTS_MIPS16
256 select SYS_HAS_EARLY_PRINTK
257 select USE_GENERIC_EARLY_PRINTK_8250
258 select GPIOLIB
259 select LEDS_GPIO_REGISTER
260 select BCM47XX_NVRAM
261 select BCM47XX_SPROM
262 help
263 Support for BCM47XX based boards
264
265config BCM63XX
266 bool "Broadcom BCM63XX based boards"
267 select BOOT_RAW
268 select CEVT_R4K
269 select CSRC_R4K
270 select SYNC_R4K
271 select DMA_NONCOHERENT
272 select IRQ_MIPS_CPU
273 select SYS_SUPPORTS_32BIT_KERNEL
274 select SYS_SUPPORTS_BIG_ENDIAN
275 select SYS_HAS_EARLY_PRINTK
276 select SWAP_IO_SPACE
277 select GPIOLIB
278 select HAVE_CLK
279 select MIPS_L1_CACHE_SHIFT_4
280 help
281 Support for BCM63XX based boards
282
283config MIPS_COBALT
284 bool "Cobalt Server"
285 select CEVT_R4K
286 select CSRC_R4K
287 select CEVT_GT641XX
288 select DMA_NONCOHERENT
289 select HW_HAS_PCI
290 select I8253
291 select I8259
292 select IRQ_MIPS_CPU
293 select IRQ_GT641XX
294 select PCI_GT64XXX_PCI0
295 select PCI
296 select SYS_HAS_CPU_NEVADA
297 select SYS_HAS_EARLY_PRINTK
298 select SYS_SUPPORTS_32BIT_KERNEL
299 select SYS_SUPPORTS_64BIT_KERNEL
300 select SYS_SUPPORTS_LITTLE_ENDIAN
301 select USE_GENERIC_EARLY_PRINTK_8250
302
303config MACH_DECSTATION
304 bool "DECstations"
305 select BOOT_ELF32
306 select CEVT_DS1287
307 select CEVT_R4K if CPU_R4X00
308 select CSRC_IOASIC
309 select CSRC_R4K if CPU_R4X00
310 select CPU_DADDI_WORKAROUNDS if 64BIT
311 select CPU_R4000_WORKAROUNDS if 64BIT
312 select CPU_R4400_WORKAROUNDS if 64BIT
313 select DMA_NONCOHERENT
314 select NO_IOPORT_MAP
315 select IRQ_MIPS_CPU
316 select SYS_HAS_CPU_R3000
317 select SYS_HAS_CPU_R4X00
318 select SYS_SUPPORTS_32BIT_KERNEL
319 select SYS_SUPPORTS_64BIT_KERNEL
320 select SYS_SUPPORTS_LITTLE_ENDIAN
321 select SYS_SUPPORTS_128HZ
322 select SYS_SUPPORTS_256HZ
323 select SYS_SUPPORTS_1024HZ
324 select MIPS_L1_CACHE_SHIFT_4
325 help
326 This enables support for DEC's MIPS based workstations. For details
327 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
328 DECstation porting pages on <http://decstation.unix-ag.org/>.
329
330 If you have one of the following DECstation Models you definitely
331 want to choose R4xx0 for the CPU Type:
332
333 DECstation 5000/50
334 DECstation 5000/150
335 DECstation 5000/260
336 DECsystem 5900/260
337
338 otherwise choose R3000.
339
340config MACH_JAZZ
341 bool "Jazz family of machines"
342 select FW_ARC
343 select FW_ARC32
344 select ARCH_MAY_HAVE_PC_FDC
345 select CEVT_R4K
346 select CSRC_R4K
347 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
348 select GENERIC_ISA_DMA
349 select HAVE_PCSPKR_PLATFORM
350 select IRQ_MIPS_CPU
351 select I8253
352 select I8259
353 select ISA
354 select SYS_HAS_CPU_R4X00
355 select SYS_SUPPORTS_32BIT_KERNEL
356 select SYS_SUPPORTS_64BIT_KERNEL
357 select SYS_SUPPORTS_100HZ
358 help
359 This a family of machines based on the MIPS R4030 chipset which was
360 used by several vendors to build RISC/os and Windows NT workstations.
361 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
362 Olivetti M700-10 workstations.
363
364config MACH_INGENIC
365 bool "Ingenic SoC based machines"
366 select SYS_SUPPORTS_32BIT_KERNEL
367 select SYS_SUPPORTS_LITTLE_ENDIAN
368 select SYS_SUPPORTS_ZBOOT_UART16550
369 select DMA_NONCOHERENT
370 select IRQ_MIPS_CPU
371 select PINCTRL
372 select GPIOLIB
373 select COMMON_CLK
374 select GENERIC_IRQ_CHIP
375 select BUILTIN_DTB
376 select USE_OF
377 select LIBFDT
378
379config LANTIQ
380 bool "Lantiq based platforms"
381 select DMA_NONCOHERENT
382 select IRQ_MIPS_CPU
383 select CEVT_R4K
384 select CSRC_R4K
385 select SYS_HAS_CPU_MIPS32_R1
386 select SYS_HAS_CPU_MIPS32_R2
387 select SYS_SUPPORTS_BIG_ENDIAN
388 select SYS_SUPPORTS_32BIT_KERNEL
389 select SYS_SUPPORTS_MIPS16
390 select SYS_SUPPORTS_MULTITHREADING
391 select SYS_HAS_EARLY_PRINTK
392 select GPIOLIB
393 select SWAP_IO_SPACE
394 select BOOT_RAW
395 select CLKDEV_LOOKUP
396 select USE_OF
397 select PINCTRL
398 select PINCTRL_LANTIQ
399 select ARCH_HAS_RESET_CONTROLLER
400 select RESET_CONTROLLER
401
402config LASAT
403 bool "LASAT Networks platforms"
404 select CEVT_R4K
405 select CRC32
406 select CSRC_R4K
407 select DMA_NONCOHERENT
408 select SYS_HAS_EARLY_PRINTK
409 select HW_HAS_PCI
410 select IRQ_MIPS_CPU
411 select PCI_GT64XXX_PCI0
412 select MIPS_NILE4
413 select R5000_CPU_SCACHE
414 select SYS_HAS_CPU_R5000
415 select SYS_SUPPORTS_32BIT_KERNEL
416 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
417 select SYS_SUPPORTS_LITTLE_ENDIAN
418
419config MACH_LOONGSON32
420 bool "Loongson-1 family of machines"
421 select SYS_SUPPORTS_ZBOOT
422 help
423 This enables support for the Loongson-1 family of machines.
424
425 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
426 the Institute of Computing Technology (ICT), Chinese Academy of
427 Sciences (CAS).
428
429config MACH_LOONGSON64
430 bool "Loongson-2/3 family of machines"
431 select SYS_SUPPORTS_ZBOOT
432 help
433 This enables the support of Loongson-2/3 family of machines.
434
435 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
436 family of multi-core CPUs. They are both 64-bit general-purpose
437 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
438 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
439 in the People's Republic of China. The chief architect is Professor
440 Weiwu Hu.
441
442config MACH_PISTACHIO
443 bool "IMG Pistachio SoC based boards"
444 select BOOT_ELF32
445 select BOOT_RAW
446 select CEVT_R4K
447 select CLKSRC_MIPS_GIC
448 select COMMON_CLK
449 select CSRC_R4K
450 select DMA_NONCOHERENT
451 select GPIOLIB
452 select IRQ_MIPS_CPU
453 select LIBFDT
454 select MFD_SYSCON
455 select MIPS_CPU_SCACHE
456 select MIPS_GIC
457 select PINCTRL
458 select REGULATOR
459 select SYS_HAS_CPU_MIPS32_R2
460 select SYS_SUPPORTS_32BIT_KERNEL
461 select SYS_SUPPORTS_LITTLE_ENDIAN
462 select SYS_SUPPORTS_MIPS_CPS
463 select SYS_SUPPORTS_MULTITHREADING
464 select SYS_SUPPORTS_RELOCATABLE
465 select SYS_SUPPORTS_ZBOOT
466 select SYS_HAS_EARLY_PRINTK
467 select USE_GENERIC_EARLY_PRINTK_8250
468 select USE_OF
469 help
470 This enables support for the IMG Pistachio SoC platform.
471
472config MACH_XILFPGA
473 bool "MIPSfpga Xilinx based boards"
474 select BOOT_ELF32
475 select BOOT_RAW
476 select BUILTIN_DTB
477 select CEVT_R4K
478 select COMMON_CLK
479 select CSRC_R4K
480 select GPIOLIB
481 select IRQ_MIPS_CPU
482 select LIBFDT
483 select MIPS_CPU_SCACHE
484 select SYS_HAS_EARLY_PRINTK
485 select SYS_HAS_CPU_MIPS32_R2
486 select SYS_SUPPORTS_32BIT_KERNEL
487 select SYS_SUPPORTS_LITTLE_ENDIAN
488 select SYS_SUPPORTS_ZBOOT_UART16550
489 select USE_OF
490 select USE_GENERIC_EARLY_PRINTK_8250
491 select XILINX_INTC
492 help
493 This enables support for the IMG University Program MIPSfpga platform.
494
495config MIPS_MALTA
496 bool "MIPS Malta board"
497 select ARCH_MAY_HAVE_PC_FDC
498 select BOOT_ELF32
499 select BOOT_RAW
500 select BUILTIN_DTB
501 select CEVT_R4K
502 select CSRC_R4K
503 select CLKSRC_MIPS_GIC
504 select COMMON_CLK
505 select DMA_MAYBE_COHERENT
506 select GENERIC_ISA_DMA
507 select HAVE_PCSPKR_PLATFORM
508 select IRQ_MIPS_CPU
509 select MIPS_GIC
510 select HW_HAS_PCI
511 select I8253
512 select I8259
513 select MIPS_BONITO64
514 select MIPS_CPU_SCACHE
515 select MIPS_L1_CACHE_SHIFT_6
516 select PCI_GT64XXX_PCI0
517 select MIPS_MSC
518 select SMP_UP if SMP
519 select SWAP_IO_SPACE
520 select SYS_HAS_CPU_MIPS32_R1
521 select SYS_HAS_CPU_MIPS32_R2
522 select SYS_HAS_CPU_MIPS32_R3_5
523 select SYS_HAS_CPU_MIPS32_R5
524 select SYS_HAS_CPU_MIPS32_R6
525 select SYS_HAS_CPU_MIPS64_R1
526 select SYS_HAS_CPU_MIPS64_R2
527 select SYS_HAS_CPU_MIPS64_R6
528 select SYS_HAS_CPU_NEVADA
529 select SYS_HAS_CPU_RM7000
530 select SYS_SUPPORTS_32BIT_KERNEL
531 select SYS_SUPPORTS_64BIT_KERNEL
532 select SYS_SUPPORTS_BIG_ENDIAN
533 select SYS_SUPPORTS_HIGHMEM
534 select SYS_SUPPORTS_LITTLE_ENDIAN
535 select SYS_SUPPORTS_MICROMIPS
536 select SYS_SUPPORTS_MIPS_CMP
537 select SYS_SUPPORTS_MIPS_CPS
538 select SYS_SUPPORTS_MIPS16
539 select SYS_SUPPORTS_MULTITHREADING
540 select SYS_SUPPORTS_SMARTMIPS
541 select SYS_SUPPORTS_ZBOOT
542 select SYS_SUPPORTS_RELOCATABLE
543 select USE_OF
544 select LIBFDT
545 select ZONE_DMA32 if 64BIT
546 select BUILTIN_DTB
547 select LIBFDT
548 help
549 This enables support for the MIPS Technologies Malta evaluation
550 board.
551
552config MACH_PIC32
553 bool "Microchip PIC32 Family"
554 help
555 This enables support for the Microchip PIC32 family of platforms.
556
557 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
558 microcontrollers.
559
560config NEC_MARKEINS
561 bool "NEC EMMA2RH Mark-eins board"
562 select SOC_EMMA2RH
563 select HW_HAS_PCI
564 help
565 This enables support for the NEC Electronics Mark-eins boards.
566
567config MACH_VR41XX
568 bool "NEC VR4100 series based machines"
569 select CEVT_R4K
570 select CSRC_R4K
571 select SYS_HAS_CPU_VR41XX
572 select SYS_SUPPORTS_MIPS16
573 select GPIOLIB
574
575config NXP_STB220
576 bool "NXP STB220 board"
577 select SOC_PNX833X
578 help
579 Support for NXP Semiconductors STB220 Development Board.
580
581config NXP_STB225
582 bool "NXP 225 board"
583 select SOC_PNX833X
584 select SOC_PNX8335
585 help
586 Support for NXP Semiconductors STB225 Development Board.
587
588config PMC_MSP
589 bool "PMC-Sierra MSP chipsets"
590 select CEVT_R4K
591 select CSRC_R4K
592 select DMA_NONCOHERENT
593 select SWAP_IO_SPACE
594 select NO_EXCEPT_FILL
595 select BOOT_RAW
596 select SYS_HAS_CPU_MIPS32_R1
597 select SYS_HAS_CPU_MIPS32_R2
598 select SYS_SUPPORTS_32BIT_KERNEL
599 select SYS_SUPPORTS_BIG_ENDIAN
600 select SYS_SUPPORTS_MIPS16
601 select IRQ_MIPS_CPU
602 select SERIAL_8250
603 select SERIAL_8250_CONSOLE
604 select USB_EHCI_BIG_ENDIAN_MMIO
605 select USB_EHCI_BIG_ENDIAN_DESC
606 help
607 This adds support for the PMC-Sierra family of Multi-Service
608 Processor System-On-A-Chips. These parts include a number
609 of integrated peripherals, interfaces and DSPs in addition to
610 a variety of MIPS cores.
611
612config RALINK
613 bool "Ralink based machines"
614 select CEVT_R4K
615 select CSRC_R4K
616 select BOOT_RAW
617 select DMA_NONCOHERENT
618 select IRQ_MIPS_CPU
619 select USE_OF
620 select SYS_HAS_CPU_MIPS32_R1
621 select SYS_HAS_CPU_MIPS32_R2
622 select SYS_SUPPORTS_32BIT_KERNEL
623 select SYS_SUPPORTS_LITTLE_ENDIAN
624 select SYS_SUPPORTS_MIPS16
625 select SYS_HAS_EARLY_PRINTK
626 select CLKDEV_LOOKUP
627 select ARCH_HAS_RESET_CONTROLLER
628 select RESET_CONTROLLER
629
630config SGI_IP22
631 bool "SGI IP22 (Indy/Indigo2)"
632 select FW_ARC
633 select FW_ARC32
634 select BOOT_ELF32
635 select CEVT_R4K
636 select CSRC_R4K
637 select DEFAULT_SGI_PARTITION
638 select DMA_NONCOHERENT
639 select HW_HAS_EISA
640 select I8253
641 select I8259
642 select IP22_CPU_SCACHE
643 select IRQ_MIPS_CPU
644 select GENERIC_ISA_DMA_SUPPORT_BROKEN
645 select SGI_HAS_I8042
646 select SGI_HAS_INDYDOG
647 select SGI_HAS_HAL2
648 select SGI_HAS_SEEQ
649 select SGI_HAS_WD93
650 select SGI_HAS_ZILOG
651 select SWAP_IO_SPACE
652 select SYS_HAS_CPU_R4X00
653 select SYS_HAS_CPU_R5000
654 #
655 # Disable EARLY_PRINTK for now since it leads to overwritten prom
656 # memory during early boot on some machines.
657 #
658 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
659 # for a more details discussion
660 #
661 # select SYS_HAS_EARLY_PRINTK
662 select SYS_SUPPORTS_32BIT_KERNEL
663 select SYS_SUPPORTS_64BIT_KERNEL
664 select SYS_SUPPORTS_BIG_ENDIAN
665 select MIPS_L1_CACHE_SHIFT_7
666 help
667 This are the SGI Indy, Challenge S and Indigo2, as well as certain
668 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
669 that runs on these, say Y here.
670
671config SGI_IP27
672 bool "SGI IP27 (Origin200/2000)"
673 select FW_ARC
674 select FW_ARC64
675 select BOOT_ELF64
676 select DEFAULT_SGI_PARTITION
677 select DMA_COHERENT
678 select SYS_HAS_EARLY_PRINTK
679 select HW_HAS_PCI
680 select NR_CPUS_DEFAULT_64
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 BOOT_ELF64
697 select CEVT_R4K
698 select CSRC_R4K
699 select DEFAULT_SGI_PARTITION
700 select DMA_NONCOHERENT
701 select GENERIC_ISA_DMA_SUPPORT_BROKEN
702 select IRQ_MIPS_CPU
703 select HW_HAS_EISA
704 select I8253
705 select I8259
706 select SGI_HAS_I8042
707 select SGI_HAS_INDYDOG
708 select SGI_HAS_HAL2
709 select SGI_HAS_SEEQ
710 select SGI_HAS_WD93
711 select SGI_HAS_ZILOG
712 select SWAP_IO_SPACE
713 select SYS_HAS_CPU_R10000
714 #
715 # Disable EARLY_PRINTK for now since it leads to overwritten prom
716 # memory during early boot on some machines.
717 #
718 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
719 # for a more details discussion
720 #
721 # select SYS_HAS_EARLY_PRINTK
722 select SYS_SUPPORTS_64BIT_KERNEL
723 select SYS_SUPPORTS_BIG_ENDIAN
724 select MIPS_L1_CACHE_SHIFT_7
725 help
726 This is the SGI Indigo2 with R10000 processor. To compile a Linux
727 kernel that runs on these, say Y here.
728
729config SGI_IP32
730 bool "SGI IP32 (O2)"
731 select FW_ARC
732 select FW_ARC32
733 select BOOT_ELF32
734 select CEVT_R4K
735 select CSRC_R4K
736 select DMA_NONCOHERENT
737 select HW_HAS_PCI
738 select IRQ_MIPS_CPU
739 select R5000_CPU_SCACHE
740 select RM7000_CPU_SCACHE
741 select SYS_HAS_CPU_R5000
742 select SYS_HAS_CPU_R10000 if BROKEN
743 select SYS_HAS_CPU_RM7000
744 select SYS_HAS_CPU_NEVADA
745 select SYS_SUPPORTS_64BIT_KERNEL
746 select SYS_SUPPORTS_BIG_ENDIAN
747 help
748 If you want this kernel to run on SGI O2 workstation, say Y here.
749
750config SIBYTE_CRHINE
751 bool "Sibyte BCM91120C-CRhine"
752 select BOOT_ELF32
753 select DMA_COHERENT
754 select SIBYTE_BCM1120
755 select SWAP_IO_SPACE
756 select SYS_HAS_CPU_SB1
757 select SYS_SUPPORTS_BIG_ENDIAN
758 select SYS_SUPPORTS_LITTLE_ENDIAN
759
760config SIBYTE_CARMEL
761 bool "Sibyte BCM91120x-Carmel"
762 select BOOT_ELF32
763 select DMA_COHERENT
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 DMA_COHERENT
774 select SIBYTE_BCM1125
775 select SWAP_IO_SPACE
776 select SYS_HAS_CPU_SB1
777 select SYS_SUPPORTS_BIG_ENDIAN
778 select SYS_SUPPORTS_HIGHMEM
779 select SYS_SUPPORTS_LITTLE_ENDIAN
780
781config SIBYTE_RHONE
782 bool "Sibyte BCM91125E-Rhone"
783 select BOOT_ELF32
784 select DMA_COHERENT
785 select SIBYTE_BCM1125H
786 select SWAP_IO_SPACE
787 select SYS_HAS_CPU_SB1
788 select SYS_SUPPORTS_BIG_ENDIAN
789 select SYS_SUPPORTS_LITTLE_ENDIAN
790
791config SIBYTE_SWARM
792 bool "Sibyte BCM91250A-SWARM"
793 select BOOT_ELF32
794 select DMA_COHERENT
795 select HAVE_PATA_PLATFORM
796 select SIBYTE_SB1250
797 select SWAP_IO_SPACE
798 select SYS_HAS_CPU_SB1
799 select SYS_SUPPORTS_BIG_ENDIAN
800 select SYS_SUPPORTS_HIGHMEM
801 select SYS_SUPPORTS_LITTLE_ENDIAN
802 select ZONE_DMA32 if 64BIT
803
804config SIBYTE_LITTLESUR
805 bool "Sibyte BCM91250C2-LittleSur"
806 select BOOT_ELF32
807 select DMA_COHERENT
808 select HAVE_PATA_PLATFORM
809 select SIBYTE_SB1250
810 select SWAP_IO_SPACE
811 select SYS_HAS_CPU_SB1
812 select SYS_SUPPORTS_BIG_ENDIAN
813 select SYS_SUPPORTS_HIGHMEM
814 select SYS_SUPPORTS_LITTLE_ENDIAN
815 select ZONE_DMA32 if 64BIT
816
817config SIBYTE_SENTOSA
818 bool "Sibyte BCM91250E-Sentosa"
819 select BOOT_ELF32
820 select DMA_COHERENT
821 select SIBYTE_SB1250
822 select SWAP_IO_SPACE
823 select SYS_HAS_CPU_SB1
824 select SYS_SUPPORTS_BIG_ENDIAN
825 select SYS_SUPPORTS_LITTLE_ENDIAN
826
827config SIBYTE_BIGSUR
828 bool "Sibyte BCM91480B-BigSur"
829 select BOOT_ELF32
830 select DMA_COHERENT
831 select NR_CPUS_DEFAULT_4
832 select SIBYTE_BCM1x80
833 select SWAP_IO_SPACE
834 select SYS_HAS_CPU_SB1
835 select SYS_SUPPORTS_BIG_ENDIAN
836 select SYS_SUPPORTS_HIGHMEM
837 select SYS_SUPPORTS_LITTLE_ENDIAN
838 select ZONE_DMA32 if 64BIT
839
840config SNI_RM
841 bool "SNI RM200/300/400"
842 select FW_ARC if CPU_LITTLE_ENDIAN
843 select FW_ARC32 if CPU_LITTLE_ENDIAN
844 select FW_SNIPROM if CPU_BIG_ENDIAN
845 select ARCH_MAY_HAVE_PC_FDC
846 select BOOT_ELF32
847 select CEVT_R4K
848 select CSRC_R4K
849 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
850 select DMA_NONCOHERENT
851 select GENERIC_ISA_DMA
852 select HAVE_PCSPKR_PLATFORM
853 select HW_HAS_EISA
854 select HW_HAS_PCI
855 select IRQ_MIPS_CPU
856 select I8253
857 select I8259
858 select ISA
859 select MIPS_L1_CACHE_SHIFT_6
860 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
861 select SYS_HAS_CPU_R4X00
862 select SYS_HAS_CPU_R5000
863 select SYS_HAS_CPU_R10000
864 select R5000_CPU_SCACHE
865 select SYS_HAS_EARLY_PRINTK
866 select SYS_SUPPORTS_32BIT_KERNEL
867 select SYS_SUPPORTS_64BIT_KERNEL
868 select SYS_SUPPORTS_BIG_ENDIAN
869 select SYS_SUPPORTS_HIGHMEM
870 select SYS_SUPPORTS_LITTLE_ENDIAN
871 help
872 The SNI RM200/300/400 are MIPS-based machines manufactured by
873 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
874 Technology and now in turn merged with Fujitsu. Say Y here to
875 support this machine type.
876
877config MACH_TX39XX
878 bool "Toshiba TX39 series based machines"
879
880config MACH_TX49XX
881 bool "Toshiba TX49 series based machines"
882
883config MIKROTIK_RB532
884 bool "Mikrotik RB532 boards"
885 select CEVT_R4K
886 select CSRC_R4K
887 select DMA_NONCOHERENT
888 select HW_HAS_PCI
889 select IRQ_MIPS_CPU
890 select SYS_HAS_CPU_MIPS32_R1
891 select SYS_SUPPORTS_32BIT_KERNEL
892 select SYS_SUPPORTS_LITTLE_ENDIAN
893 select SWAP_IO_SPACE
894 select BOOT_RAW
895 select GPIOLIB
896 select MIPS_L1_CACHE_SHIFT_4
897 help
898 Support the Mikrotik(tm) RouterBoard 532 series,
899 based on the IDT RC32434 SoC.
900
901config CAVIUM_OCTEON_SOC
902 bool "Cavium Networks Octeon SoC based boards"
903 select CEVT_R4K
904 select ARCH_PHYS_ADDR_T_64BIT
905 select DMA_COHERENT
906 select SYS_SUPPORTS_64BIT_KERNEL
907 select SYS_SUPPORTS_BIG_ENDIAN
908 select EDAC_SUPPORT
909 select EDAC_ATOMIC_SCRUB
910 select SYS_SUPPORTS_LITTLE_ENDIAN
911 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
912 select SYS_HAS_EARLY_PRINTK
913 select SYS_HAS_CPU_CAVIUM_OCTEON
914 select HW_HAS_PCI
915 select ZONE_DMA32
916 select HOLES_IN_ZONE
917 select GPIOLIB
918 select LIBFDT
919 select USE_OF
920 select ARCH_SPARSEMEM_ENABLE
921 select SYS_SUPPORTS_SMP
922 select NR_CPUS_DEFAULT_16
923 select BUILTIN_DTB
924 select MTD_COMPLEX_MAPPINGS
925 select SYS_SUPPORTS_RELOCATABLE
926 help
927 This option supports all of the Octeon reference boards from Cavium
928 Networks. It builds a kernel that dynamically determines the Octeon
929 CPU type and supports all known board reference implementations.
930 Some of the supported boards are:
931 EBT3000
932 EBH3000
933 EBH3100
934 Thunder
935 Kodama
936 Hikari
937 Say Y here for most Octeon reference boards.
938
939config NLM_XLR_BOARD
940 bool "Netlogic XLR/XLS based systems"
941 select BOOT_ELF32
942 select NLM_COMMON
943 select SYS_HAS_CPU_XLR
944 select SYS_SUPPORTS_SMP
945 select HW_HAS_PCI
946 select SWAP_IO_SPACE
947 select SYS_SUPPORTS_32BIT_KERNEL
948 select SYS_SUPPORTS_64BIT_KERNEL
949 select ARCH_PHYS_ADDR_T_64BIT
950 select SYS_SUPPORTS_BIG_ENDIAN
951 select SYS_SUPPORTS_HIGHMEM
952 select DMA_COHERENT
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 HW_HAS_PCI
973 select SYS_SUPPORTS_32BIT_KERNEL
974 select SYS_SUPPORTS_64BIT_KERNEL
975 select ARCH_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 DMA_COHERENT
981 select NR_CPUS_DEFAULT_32
982 select CEVT_R4K
983 select CSRC_R4K
984 select IRQ_MIPS_CPU
985 select ZONE_DMA32 if 64BIT
986 select SYNC_R4K
987 select SYS_HAS_EARLY_PRINTK
988 select USE_OF
989 select SYS_SUPPORTS_ZBOOT
990 select SYS_SUPPORTS_ZBOOT_UART16550
991 help
992 This board is based on Netlogic XLP Processor.
993 Say Y here if you have a XLP based board.
994
995config MIPS_PARAVIRT
996 bool "Para-Virtualized guest system"
997 select CEVT_R4K
998 select CSRC_R4K
999 select DMA_COHERENT
1000 select SYS_SUPPORTS_64BIT_KERNEL
1001 select SYS_SUPPORTS_32BIT_KERNEL
1002 select SYS_SUPPORTS_BIG_ENDIAN
1003 select SYS_SUPPORTS_SMP
1004 select NR_CPUS_DEFAULT_4
1005 select SYS_HAS_EARLY_PRINTK
1006 select SYS_HAS_CPU_MIPS32_R2
1007 select SYS_HAS_CPU_MIPS64_R2
1008 select SYS_HAS_CPU_CAVIUM_OCTEON
1009 select HW_HAS_PCI
1010 select SWAP_IO_SPACE
1011 help
1012 This option supports guest running under ????
1013
1014endchoice
1015
1016source "arch/mips/alchemy/Kconfig"
1017source "arch/mips/ath25/Kconfig"
1018source "arch/mips/ath79/Kconfig"
1019source "arch/mips/bcm47xx/Kconfig"
1020source "arch/mips/bcm63xx/Kconfig"
1021source "arch/mips/bmips/Kconfig"
1022source "arch/mips/generic/Kconfig"
1023source "arch/mips/jazz/Kconfig"
1024source "arch/mips/jz4740/Kconfig"
1025source "arch/mips/lantiq/Kconfig"
1026source "arch/mips/lasat/Kconfig"
1027source "arch/mips/pic32/Kconfig"
1028source "arch/mips/pistachio/Kconfig"
1029source "arch/mips/pmcs-msp71xx/Kconfig"
1030source "arch/mips/ralink/Kconfig"
1031source "arch/mips/sgi-ip27/Kconfig"
1032source "arch/mips/sibyte/Kconfig"
1033source "arch/mips/txx9/Kconfig"
1034source "arch/mips/vr41xx/Kconfig"
1035source "arch/mips/cavium-octeon/Kconfig"
1036source "arch/mips/loongson32/Kconfig"
1037source "arch/mips/loongson64/Kconfig"
1038source "arch/mips/netlogic/Kconfig"
1039source "arch/mips/paravirt/Kconfig"
1040source "arch/mips/xilfpga/Kconfig"
1041
1042endmenu
1043
1044config RWSEM_GENERIC_SPINLOCK
1045 bool
1046 default y
1047
1048config RWSEM_XCHGADD_ALGORITHM
1049 bool
1050
1051config GENERIC_HWEIGHT
1052 bool
1053 default y
1054
1055config GENERIC_CALIBRATE_DELAY
1056 bool
1057 default y
1058
1059config SCHED_OMIT_FRAME_POINTER
1060 bool
1061 default y
1062
1063#
1064# Select some configuration options automatically based on user selections.
1065#
1066config FW_ARC
1067 bool
1068
1069config ARCH_MAY_HAVE_PC_FDC
1070 bool
1071
1072config BOOT_RAW
1073 bool
1074
1075config CEVT_BCM1480
1076 bool
1077
1078config CEVT_DS1287
1079 bool
1080
1081config CEVT_GT641XX
1082 bool
1083
1084config CEVT_R4K
1085 bool
1086
1087config CEVT_SB1250
1088 bool
1089
1090config CEVT_TXX9
1091 bool
1092
1093config CSRC_BCM1480
1094 bool
1095
1096config CSRC_IOASIC
1097 bool
1098
1099config CSRC_R4K
1100 bool
1101
1102config CSRC_SB1250
1103 bool
1104
1105config MIPS_CLOCK_VSYSCALL
1106 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1107
1108config GPIO_TXX9
1109 select GPIOLIB
1110 bool
1111
1112config FW_CFE
1113 bool
1114
1115config ARCH_DMA_ADDR_T_64BIT
1116 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1117
1118config ARCH_SUPPORTS_UPROBES
1119 bool
1120
1121config DMA_MAYBE_COHERENT
1122 select DMA_NONCOHERENT
1123 bool
1124
1125config DMA_PERDEV_COHERENT
1126 bool
1127 select DMA_MAYBE_COHERENT
1128
1129config DMA_COHERENT
1130 bool
1131
1132config DMA_NONCOHERENT
1133 bool
1134 select NEED_DMA_MAP_STATE
1135
1136config NEED_DMA_MAP_STATE
1137 bool
1138
1139config SYS_HAS_EARLY_PRINTK
1140 bool
1141
1142config SYS_SUPPORTS_HOTPLUG_CPU
1143 bool
1144
1145config MIPS_BONITO64
1146 bool
1147
1148config MIPS_MSC
1149 bool
1150
1151config MIPS_NILE4
1152 bool
1153
1154config SYNC_R4K
1155 bool
1156
1157config MIPS_MACHINE
1158 def_bool n
1159
1160config NO_IOPORT_MAP
1161 def_bool n
1162
1163config GENERIC_CSUM
1164 bool
1165
1166config GENERIC_ISA_DMA
1167 bool
1168 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1169 select ISA_DMA_API
1170
1171config GENERIC_ISA_DMA_SUPPORT_BROKEN
1172 bool
1173 select GENERIC_ISA_DMA
1174
1175config ISA_DMA_API
1176 bool
1177
1178config HOLES_IN_ZONE
1179 bool
1180
1181config SYS_SUPPORTS_RELOCATABLE
1182 bool
1183 help
1184 Selected if the platform supports relocating the kernel.
1185 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1186 to allow access to command line and entropy sources.
1187
1188config MIPS_CBPF_JIT
1189 def_bool y
1190 depends on BPF_JIT && HAVE_CBPF_JIT
1191
1192config MIPS_EBPF_JIT
1193 def_bool y
1194 depends on BPF_JIT && HAVE_EBPF_JIT
1195
1196
1197#
1198# Endianness selection. Sufficiently obscure so many users don't know what to
1199# answer,so we try hard to limit the available choices. Also the use of a
1200# choice statement should be more obvious to the user.
1201#
1202choice
1203 prompt "Endianness selection"
1204 help
1205 Some MIPS machines can be configured for either little or big endian
1206 byte order. These modes require different kernels and a different
1207 Linux distribution. In general there is one preferred byteorder for a
1208 particular system but some systems are just as commonly used in the
1209 one or the other endianness.
1210
1211config CPU_BIG_ENDIAN
1212 bool "Big endian"
1213 depends on SYS_SUPPORTS_BIG_ENDIAN
1214
1215config CPU_LITTLE_ENDIAN
1216 bool "Little endian"
1217 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1218
1219endchoice
1220
1221config EXPORT_UASM
1222 bool
1223
1224config SYS_SUPPORTS_APM_EMULATION
1225 bool
1226
1227config SYS_SUPPORTS_BIG_ENDIAN
1228 bool
1229
1230config SYS_SUPPORTS_LITTLE_ENDIAN
1231 bool
1232
1233config SYS_SUPPORTS_HUGETLBFS
1234 bool
1235 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1236 default y
1237
1238config MIPS_HUGE_TLB_SUPPORT
1239 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1240
1241config IRQ_CPU_RM7K
1242 bool
1243
1244config IRQ_MSP_SLP
1245 bool
1246
1247config IRQ_MSP_CIC
1248 bool
1249
1250config IRQ_TXX9
1251 bool
1252
1253config IRQ_GT641XX
1254 bool
1255
1256config PCI_GT64XXX_PCI0
1257 bool
1258
1259config NO_EXCEPT_FILL
1260 bool
1261
1262config SOC_EMMA2RH
1263 bool
1264 select CEVT_R4K
1265 select CSRC_R4K
1266 select DMA_NONCOHERENT
1267 select IRQ_MIPS_CPU
1268 select SWAP_IO_SPACE
1269 select SYS_HAS_CPU_R5500
1270 select SYS_SUPPORTS_32BIT_KERNEL
1271 select SYS_SUPPORTS_64BIT_KERNEL
1272 select SYS_SUPPORTS_BIG_ENDIAN
1273
1274config SOC_PNX833X
1275 bool
1276 select CEVT_R4K
1277 select CSRC_R4K
1278 select IRQ_MIPS_CPU
1279 select DMA_NONCOHERENT
1280 select SYS_HAS_CPU_MIPS32_R2
1281 select SYS_SUPPORTS_32BIT_KERNEL
1282 select SYS_SUPPORTS_LITTLE_ENDIAN
1283 select SYS_SUPPORTS_BIG_ENDIAN
1284 select SYS_SUPPORTS_MIPS16
1285 select CPU_MIPSR2_IRQ_VI
1286
1287config SOC_PNX8335
1288 bool
1289 select SOC_PNX833X
1290
1291config MIPS_SPRAM
1292 bool
1293
1294config SWAP_IO_SPACE
1295 bool
1296
1297config SGI_HAS_INDYDOG
1298 bool
1299
1300config SGI_HAS_HAL2
1301 bool
1302
1303config SGI_HAS_SEEQ
1304 bool
1305
1306config SGI_HAS_WD93
1307 bool
1308
1309config SGI_HAS_ZILOG
1310 bool
1311
1312config SGI_HAS_I8042
1313 bool
1314
1315config DEFAULT_SGI_PARTITION
1316 bool
1317
1318config FW_ARC32
1319 bool
1320
1321config FW_SNIPROM
1322 bool
1323
1324config BOOT_ELF32
1325 bool
1326
1327config MIPS_L1_CACHE_SHIFT_4
1328 bool
1329
1330config MIPS_L1_CACHE_SHIFT_5
1331 bool
1332
1333config MIPS_L1_CACHE_SHIFT_6
1334 bool
1335
1336config MIPS_L1_CACHE_SHIFT_7
1337 bool
1338
1339config MIPS_L1_CACHE_SHIFT
1340 int
1341 default "7" if MIPS_L1_CACHE_SHIFT_7
1342 default "6" if MIPS_L1_CACHE_SHIFT_6
1343 default "5" if MIPS_L1_CACHE_SHIFT_5
1344 default "4" if MIPS_L1_CACHE_SHIFT_4
1345 default "5"
1346
1347config HAVE_STD_PC_SERIAL_PORT
1348 bool
1349
1350config ARC_CONSOLE
1351 bool "ARC console support"
1352 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1353
1354config ARC_MEMORY
1355 bool
1356 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1357 default y
1358
1359config ARC_PROMLIB
1360 bool
1361 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1362 default y
1363
1364config FW_ARC64
1365 bool
1366
1367config BOOT_ELF64
1368 bool
1369
1370menu "CPU selection"
1371
1372choice
1373 prompt "CPU type"
1374 default CPU_R4X00
1375
1376config CPU_LOONGSON3
1377 bool "Loongson 3 CPU"
1378 depends on SYS_HAS_CPU_LOONGSON3
1379 select CPU_SUPPORTS_64BIT_KERNEL
1380 select CPU_SUPPORTS_HIGHMEM
1381 select CPU_SUPPORTS_HUGEPAGES
1382 select WEAK_ORDERING
1383 select WEAK_REORDERING_BEYOND_LLSC
1384 select MIPS_PGD_C0_CONTEXT
1385 select MIPS_L1_CACHE_SHIFT_6
1386 select GPIOLIB
1387 help
1388 The Loongson 3 processor implements the MIPS64R2 instruction
1389 set with many extensions.
1390
1391config LOONGSON3_ENHANCEMENT
1392 bool "New Loongson 3 CPU Enhancements"
1393 default n
1394 select CPU_MIPSR2
1395 select CPU_HAS_PREFETCH
1396 depends on CPU_LOONGSON3
1397 help
1398 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1399 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1400 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1401 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1402 Fast TLB refill support, etc.
1403
1404 This option enable those enhancements which are not probed at run
1405 time. If you want a generic kernel to run on all Loongson 3 machines,
1406 please say 'N' here. If you want a high-performance kernel to run on
1407 new Loongson 3 machines only, please say 'Y' here.
1408
1409config CPU_LOONGSON2E
1410 bool "Loongson 2E"
1411 depends on SYS_HAS_CPU_LOONGSON2E
1412 select CPU_LOONGSON2
1413 help
1414 The Loongson 2E processor implements the MIPS III instruction set
1415 with many extensions.
1416
1417 It has an internal FPGA northbridge, which is compatible to
1418 bonito64.
1419
1420config CPU_LOONGSON2F
1421 bool "Loongson 2F"
1422 depends on SYS_HAS_CPU_LOONGSON2F
1423 select CPU_LOONGSON2
1424 select GPIOLIB
1425 help
1426 The Loongson 2F processor implements the MIPS III instruction set
1427 with many extensions.
1428
1429 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1430 have a similar programming interface with FPGA northbridge used in
1431 Loongson2E.
1432
1433config CPU_LOONGSON1B
1434 bool "Loongson 1B"
1435 depends on SYS_HAS_CPU_LOONGSON1B
1436 select CPU_LOONGSON1
1437 select LEDS_GPIO_REGISTER
1438 help
1439 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1440 release 2 instruction set.
1441
1442config CPU_LOONGSON1C
1443 bool "Loongson 1C"
1444 depends on SYS_HAS_CPU_LOONGSON1C
1445 select CPU_LOONGSON1
1446 select LEDS_GPIO_REGISTER
1447 help
1448 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1449 release 2 instruction set.
1450
1451config CPU_MIPS32_R1
1452 bool "MIPS32 Release 1"
1453 depends on SYS_HAS_CPU_MIPS32_R1
1454 select CPU_HAS_PREFETCH
1455 select CPU_SUPPORTS_32BIT_KERNEL
1456 select CPU_SUPPORTS_HIGHMEM
1457 help
1458 Choose this option to build a kernel for release 1 or later of the
1459 MIPS32 architecture. Most modern embedded systems with a 32-bit
1460 MIPS processor are based on a MIPS32 processor. If you know the
1461 specific type of processor in your system, choose those that one
1462 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1463 Release 2 of the MIPS32 architecture is available since several
1464 years so chances are you even have a MIPS32 Release 2 processor
1465 in which case you should choose CPU_MIPS32_R2 instead for better
1466 performance.
1467
1468config CPU_MIPS32_R2
1469 bool "MIPS32 Release 2"
1470 depends on SYS_HAS_CPU_MIPS32_R2
1471 select CPU_HAS_PREFETCH
1472 select CPU_SUPPORTS_32BIT_KERNEL
1473 select CPU_SUPPORTS_HIGHMEM
1474 select CPU_SUPPORTS_MSA
1475 select HAVE_KVM
1476 help
1477 Choose this option to build a kernel for release 2 or later of the
1478 MIPS32 architecture. Most modern embedded systems with a 32-bit
1479 MIPS processor are based on a MIPS32 processor. If you know the
1480 specific type of processor in your system, choose those that one
1481 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1482
1483config CPU_MIPS32_R6
1484 bool "MIPS32 Release 6"
1485 depends on SYS_HAS_CPU_MIPS32_R6
1486 select CPU_HAS_PREFETCH
1487 select CPU_SUPPORTS_32BIT_KERNEL
1488 select CPU_SUPPORTS_HIGHMEM
1489 select CPU_SUPPORTS_MSA
1490 select GENERIC_CSUM
1491 select HAVE_KVM
1492 select MIPS_O32_FP64_SUPPORT
1493 help
1494 Choose this option to build a kernel for release 6 or later of the
1495 MIPS32 architecture. New MIPS processors, starting with the Warrior
1496 family, are based on a MIPS32r6 processor. If you own an older
1497 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1498
1499config CPU_MIPS64_R1
1500 bool "MIPS64 Release 1"
1501 depends on SYS_HAS_CPU_MIPS64_R1
1502 select CPU_HAS_PREFETCH
1503 select CPU_SUPPORTS_32BIT_KERNEL
1504 select CPU_SUPPORTS_64BIT_KERNEL
1505 select CPU_SUPPORTS_HIGHMEM
1506 select CPU_SUPPORTS_HUGEPAGES
1507 help
1508 Choose this option to build a kernel for release 1 or later of the
1509 MIPS64 architecture. Many modern embedded systems with a 64-bit
1510 MIPS processor are based on a MIPS64 processor. If you know the
1511 specific type of processor in your system, choose those that one
1512 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1513 Release 2 of the MIPS64 architecture is available since several
1514 years so chances are you even have a MIPS64 Release 2 processor
1515 in which case you should choose CPU_MIPS64_R2 instead for better
1516 performance.
1517
1518config CPU_MIPS64_R2
1519 bool "MIPS64 Release 2"
1520 depends on SYS_HAS_CPU_MIPS64_R2
1521 select CPU_HAS_PREFETCH
1522 select CPU_SUPPORTS_32BIT_KERNEL
1523 select CPU_SUPPORTS_64BIT_KERNEL
1524 select CPU_SUPPORTS_HIGHMEM
1525 select CPU_SUPPORTS_HUGEPAGES
1526 select CPU_SUPPORTS_MSA
1527 select HAVE_KVM
1528 help
1529 Choose this option to build a kernel for release 2 or later of the
1530 MIPS64 architecture. Many modern embedded systems with a 64-bit
1531 MIPS processor are based on a MIPS64 processor. If you know the
1532 specific type of processor in your system, choose those that one
1533 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1534
1535config CPU_MIPS64_R6
1536 bool "MIPS64 Release 6"
1537 depends on SYS_HAS_CPU_MIPS64_R6
1538 select CPU_HAS_PREFETCH
1539 select CPU_SUPPORTS_32BIT_KERNEL
1540 select CPU_SUPPORTS_64BIT_KERNEL
1541 select CPU_SUPPORTS_HIGHMEM
1542 select CPU_SUPPORTS_MSA
1543 select GENERIC_CSUM
1544 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1545 select HAVE_KVM
1546 help
1547 Choose this option to build a kernel for release 6 or later of the
1548 MIPS64 architecture. New MIPS processors, starting with the Warrior
1549 family, are based on a MIPS64r6 processor. If you own an older
1550 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1551
1552config CPU_R3000
1553 bool "R3000"
1554 depends on SYS_HAS_CPU_R3000
1555 select CPU_HAS_WB
1556 select CPU_SUPPORTS_32BIT_KERNEL
1557 select CPU_SUPPORTS_HIGHMEM
1558 help
1559 Please make sure to pick the right CPU type. Linux/MIPS is not
1560 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1561 *not* work on R4000 machines and vice versa. However, since most
1562 of the supported machines have an R4000 (or similar) CPU, R4x00
1563 might be a safe bet. If the resulting kernel does not work,
1564 try to recompile with R3000.
1565
1566config CPU_TX39XX
1567 bool "R39XX"
1568 depends on SYS_HAS_CPU_TX39XX
1569 select CPU_SUPPORTS_32BIT_KERNEL
1570
1571config CPU_VR41XX
1572 bool "R41xx"
1573 depends on SYS_HAS_CPU_VR41XX
1574 select CPU_SUPPORTS_32BIT_KERNEL
1575 select CPU_SUPPORTS_64BIT_KERNEL
1576 help
1577 The options selects support for the NEC VR4100 series of processors.
1578 Only choose this option if you have one of these processors as a
1579 kernel built with this option will not run on any other type of
1580 processor or vice versa.
1581
1582config CPU_R4300
1583 bool "R4300"
1584 depends on SYS_HAS_CPU_R4300
1585 select CPU_SUPPORTS_32BIT_KERNEL
1586 select CPU_SUPPORTS_64BIT_KERNEL
1587 help
1588 MIPS Technologies R4300-series processors.
1589
1590config CPU_R4X00
1591 bool "R4x00"
1592 depends on SYS_HAS_CPU_R4X00
1593 select CPU_SUPPORTS_32BIT_KERNEL
1594 select CPU_SUPPORTS_64BIT_KERNEL
1595 select CPU_SUPPORTS_HUGEPAGES
1596 help
1597 MIPS Technologies R4000-series processors other than 4300, including
1598 the R4000, R4400, R4600, and 4700.
1599
1600config CPU_TX49XX
1601 bool "R49XX"
1602 depends on SYS_HAS_CPU_TX49XX
1603 select CPU_HAS_PREFETCH
1604 select CPU_SUPPORTS_32BIT_KERNEL
1605 select CPU_SUPPORTS_64BIT_KERNEL
1606 select CPU_SUPPORTS_HUGEPAGES
1607
1608config CPU_R5000
1609 bool "R5000"
1610 depends on SYS_HAS_CPU_R5000
1611 select CPU_SUPPORTS_32BIT_KERNEL
1612 select CPU_SUPPORTS_64BIT_KERNEL
1613 select CPU_SUPPORTS_HUGEPAGES
1614 help
1615 MIPS Technologies R5000-series processors other than the Nevada.
1616
1617config CPU_R5432
1618 bool "R5432"
1619 depends on SYS_HAS_CPU_R5432
1620 select CPU_SUPPORTS_32BIT_KERNEL
1621 select CPU_SUPPORTS_64BIT_KERNEL
1622 select CPU_SUPPORTS_HUGEPAGES
1623
1624config CPU_R5500
1625 bool "R5500"
1626 depends on SYS_HAS_CPU_R5500
1627 select CPU_SUPPORTS_32BIT_KERNEL
1628 select CPU_SUPPORTS_64BIT_KERNEL
1629 select CPU_SUPPORTS_HUGEPAGES
1630 help
1631 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1632 instruction set.
1633
1634config CPU_NEVADA
1635 bool "RM52xx"
1636 depends on SYS_HAS_CPU_NEVADA
1637 select CPU_SUPPORTS_32BIT_KERNEL
1638 select CPU_SUPPORTS_64BIT_KERNEL
1639 select CPU_SUPPORTS_HUGEPAGES
1640 help
1641 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1642
1643config CPU_R8000
1644 bool "R8000"
1645 depends on SYS_HAS_CPU_R8000
1646 select CPU_HAS_PREFETCH
1647 select CPU_SUPPORTS_64BIT_KERNEL
1648 help
1649 MIPS Technologies R8000 processors. Note these processors are
1650 uncommon and the support for them is incomplete.
1651
1652config CPU_R10000
1653 bool "R10000"
1654 depends on SYS_HAS_CPU_R10000
1655 select CPU_HAS_PREFETCH
1656 select CPU_SUPPORTS_32BIT_KERNEL
1657 select CPU_SUPPORTS_64BIT_KERNEL
1658 select CPU_SUPPORTS_HIGHMEM
1659 select CPU_SUPPORTS_HUGEPAGES
1660 help
1661 MIPS Technologies R10000-series processors.
1662
1663config CPU_RM7000
1664 bool "RM7000"
1665 depends on SYS_HAS_CPU_RM7000
1666 select CPU_HAS_PREFETCH
1667 select CPU_SUPPORTS_32BIT_KERNEL
1668 select CPU_SUPPORTS_64BIT_KERNEL
1669 select CPU_SUPPORTS_HIGHMEM
1670 select CPU_SUPPORTS_HUGEPAGES
1671
1672config CPU_SB1
1673 bool "SB1"
1674 depends on SYS_HAS_CPU_SB1
1675 select CPU_SUPPORTS_32BIT_KERNEL
1676 select CPU_SUPPORTS_64BIT_KERNEL
1677 select CPU_SUPPORTS_HIGHMEM
1678 select CPU_SUPPORTS_HUGEPAGES
1679 select WEAK_ORDERING
1680
1681config CPU_CAVIUM_OCTEON
1682 bool "Cavium Octeon processor"
1683 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1684 select CPU_HAS_PREFETCH
1685 select CPU_SUPPORTS_64BIT_KERNEL
1686 select WEAK_ORDERING
1687 select CPU_SUPPORTS_HIGHMEM
1688 select CPU_SUPPORTS_HUGEPAGES
1689 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1690 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1691 select MIPS_L1_CACHE_SHIFT_7
1692 select HAVE_KVM
1693 help
1694 The Cavium Octeon processor is a highly integrated chip containing
1695 many ethernet hardware widgets for networking tasks. The processor
1696 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1697 Full details can be found at http://www.caviumnetworks.com.
1698
1699config CPU_BMIPS
1700 bool "Broadcom BMIPS"
1701 depends on SYS_HAS_CPU_BMIPS
1702 select CPU_MIPS32
1703 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1704 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1705 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1706 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1707 select CPU_SUPPORTS_32BIT_KERNEL
1708 select DMA_NONCOHERENT
1709 select IRQ_MIPS_CPU
1710 select SWAP_IO_SPACE
1711 select WEAK_ORDERING
1712 select CPU_SUPPORTS_HIGHMEM
1713 select CPU_HAS_PREFETCH
1714 select CPU_SUPPORTS_CPUFREQ
1715 select MIPS_EXTERNAL_TIMER
1716 help
1717 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1718
1719config CPU_XLR
1720 bool "Netlogic XLR SoC"
1721 depends on SYS_HAS_CPU_XLR
1722 select CPU_SUPPORTS_32BIT_KERNEL
1723 select CPU_SUPPORTS_64BIT_KERNEL
1724 select CPU_SUPPORTS_HIGHMEM
1725 select CPU_SUPPORTS_HUGEPAGES
1726 select WEAK_ORDERING
1727 select WEAK_REORDERING_BEYOND_LLSC
1728 help
1729 Netlogic Microsystems XLR/XLS processors.
1730
1731config CPU_XLP
1732 bool "Netlogic XLP SoC"
1733 depends on SYS_HAS_CPU_XLP
1734 select CPU_SUPPORTS_32BIT_KERNEL
1735 select CPU_SUPPORTS_64BIT_KERNEL
1736 select CPU_SUPPORTS_HIGHMEM
1737 select WEAK_ORDERING
1738 select WEAK_REORDERING_BEYOND_LLSC
1739 select CPU_HAS_PREFETCH
1740 select CPU_MIPSR2
1741 select CPU_SUPPORTS_HUGEPAGES
1742 select MIPS_ASID_BITS_VARIABLE
1743 help
1744 Netlogic Microsystems XLP processors.
1745endchoice
1746
1747config CPU_MIPS32_3_5_FEATURES
1748 bool "MIPS32 Release 3.5 Features"
1749 depends on SYS_HAS_CPU_MIPS32_R3_5
1750 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1751 help
1752 Choose this option to build a kernel for release 2 or later of the
1753 MIPS32 architecture including features from the 3.5 release such as
1754 support for Enhanced Virtual Addressing (EVA).
1755
1756config CPU_MIPS32_3_5_EVA
1757 bool "Enhanced Virtual Addressing (EVA)"
1758 depends on CPU_MIPS32_3_5_FEATURES
1759 select EVA
1760 default y
1761 help
1762 Choose this option if you want to enable the Enhanced Virtual
1763 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1764 One of its primary benefits is an increase in the maximum size
1765 of lowmem (up to 3GB). If unsure, say 'N' here.
1766
1767config CPU_MIPS32_R5_FEATURES
1768 bool "MIPS32 Release 5 Features"
1769 depends on SYS_HAS_CPU_MIPS32_R5
1770 depends on CPU_MIPS32_R2
1771 help
1772 Choose this option to build a kernel for release 2 or later of the
1773 MIPS32 architecture including features from release 5 such as
1774 support for Extended Physical Addressing (XPA).
1775
1776config CPU_MIPS32_R5_XPA
1777 bool "Extended Physical Addressing (XPA)"
1778 depends on CPU_MIPS32_R5_FEATURES
1779 depends on !EVA
1780 depends on !PAGE_SIZE_4KB
1781 depends on SYS_SUPPORTS_HIGHMEM
1782 select XPA
1783 select HIGHMEM
1784 select ARCH_PHYS_ADDR_T_64BIT
1785 default n
1786 help
1787 Choose this option if you want to enable the Extended Physical
1788 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1789 benefit is to increase physical addressing equal to or greater
1790 than 40 bits. Note that this has the side effect of turning on
1791 64-bit addressing which in turn makes the PTEs 64-bit in size.
1792 If unsure, say 'N' here.
1793
1794if CPU_LOONGSON2F
1795config CPU_NOP_WORKAROUNDS
1796 bool
1797
1798config CPU_JUMP_WORKAROUNDS
1799 bool
1800
1801config CPU_LOONGSON2F_WORKAROUNDS
1802 bool "Loongson 2F Workarounds"
1803 default y
1804 select CPU_NOP_WORKAROUNDS
1805 select CPU_JUMP_WORKAROUNDS
1806 help
1807 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1808 require workarounds. Without workarounds the system may hang
1809 unexpectedly. For more information please refer to the gas
1810 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1811
1812 Loongson 2F03 and later have fixed these issues and no workarounds
1813 are needed. The workarounds have no significant side effect on them
1814 but may decrease the performance of the system so this option should
1815 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1816 systems.
1817
1818 If unsure, please say Y.
1819endif # CPU_LOONGSON2F
1820
1821config SYS_SUPPORTS_ZBOOT
1822 bool
1823 select HAVE_KERNEL_GZIP
1824 select HAVE_KERNEL_BZIP2
1825 select HAVE_KERNEL_LZ4
1826 select HAVE_KERNEL_LZMA
1827 select HAVE_KERNEL_LZO
1828 select HAVE_KERNEL_XZ
1829
1830config SYS_SUPPORTS_ZBOOT_UART16550
1831 bool
1832 select SYS_SUPPORTS_ZBOOT
1833
1834config SYS_SUPPORTS_ZBOOT_UART_PROM
1835 bool
1836 select SYS_SUPPORTS_ZBOOT
1837
1838config CPU_LOONGSON2
1839 bool
1840 select CPU_SUPPORTS_32BIT_KERNEL
1841 select CPU_SUPPORTS_64BIT_KERNEL
1842 select CPU_SUPPORTS_HIGHMEM
1843 select CPU_SUPPORTS_HUGEPAGES
1844
1845config CPU_LOONGSON1
1846 bool
1847 select CPU_MIPS32
1848 select CPU_MIPSR2
1849 select CPU_HAS_PREFETCH
1850 select CPU_SUPPORTS_32BIT_KERNEL
1851 select CPU_SUPPORTS_HIGHMEM
1852 select CPU_SUPPORTS_CPUFREQ
1853
1854config CPU_BMIPS32_3300
1855 select SMP_UP if SMP
1856 bool
1857
1858config CPU_BMIPS4350
1859 bool
1860 select SYS_SUPPORTS_SMP
1861 select SYS_SUPPORTS_HOTPLUG_CPU
1862
1863config CPU_BMIPS4380
1864 bool
1865 select MIPS_L1_CACHE_SHIFT_6
1866 select SYS_SUPPORTS_SMP
1867 select SYS_SUPPORTS_HOTPLUG_CPU
1868 select CPU_HAS_RIXI
1869
1870config CPU_BMIPS5000
1871 bool
1872 select MIPS_CPU_SCACHE
1873 select MIPS_L1_CACHE_SHIFT_7
1874 select SYS_SUPPORTS_SMP
1875 select SYS_SUPPORTS_HOTPLUG_CPU
1876 select CPU_HAS_RIXI
1877
1878config SYS_HAS_CPU_LOONGSON3
1879 bool
1880 select CPU_SUPPORTS_CPUFREQ
1881 select CPU_HAS_RIXI
1882
1883config SYS_HAS_CPU_LOONGSON2E
1884 bool
1885
1886config SYS_HAS_CPU_LOONGSON2F
1887 bool
1888 select CPU_SUPPORTS_CPUFREQ
1889 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1890 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1891
1892config SYS_HAS_CPU_LOONGSON1B
1893 bool
1894
1895config SYS_HAS_CPU_LOONGSON1C
1896 bool
1897
1898config SYS_HAS_CPU_MIPS32_R1
1899 bool
1900
1901config SYS_HAS_CPU_MIPS32_R2
1902 bool
1903
1904config SYS_HAS_CPU_MIPS32_R3_5
1905 bool
1906
1907config SYS_HAS_CPU_MIPS32_R5
1908 bool
1909
1910config SYS_HAS_CPU_MIPS32_R6
1911 bool
1912
1913config SYS_HAS_CPU_MIPS64_R1
1914 bool
1915
1916config SYS_HAS_CPU_MIPS64_R2
1917 bool
1918
1919config SYS_HAS_CPU_MIPS64_R6
1920 bool
1921
1922config SYS_HAS_CPU_R3000
1923 bool
1924
1925config SYS_HAS_CPU_TX39XX
1926 bool
1927
1928config SYS_HAS_CPU_VR41XX
1929 bool
1930
1931config SYS_HAS_CPU_R4300
1932 bool
1933
1934config SYS_HAS_CPU_R4X00
1935 bool
1936
1937config SYS_HAS_CPU_TX49XX
1938 bool
1939
1940config SYS_HAS_CPU_R5000
1941 bool
1942
1943config SYS_HAS_CPU_R5432
1944 bool
1945
1946config SYS_HAS_CPU_R5500
1947 bool
1948
1949config SYS_HAS_CPU_NEVADA
1950 bool
1951
1952config SYS_HAS_CPU_R8000
1953 bool
1954
1955config SYS_HAS_CPU_R10000
1956 bool
1957
1958config SYS_HAS_CPU_RM7000
1959 bool
1960
1961config SYS_HAS_CPU_SB1
1962 bool
1963
1964config SYS_HAS_CPU_CAVIUM_OCTEON
1965 bool
1966
1967config SYS_HAS_CPU_BMIPS
1968 bool
1969
1970config SYS_HAS_CPU_BMIPS32_3300
1971 bool
1972 select SYS_HAS_CPU_BMIPS
1973
1974config SYS_HAS_CPU_BMIPS4350
1975 bool
1976 select SYS_HAS_CPU_BMIPS
1977
1978config SYS_HAS_CPU_BMIPS4380
1979 bool
1980 select SYS_HAS_CPU_BMIPS
1981
1982config SYS_HAS_CPU_BMIPS5000
1983 bool
1984 select SYS_HAS_CPU_BMIPS
1985
1986config SYS_HAS_CPU_XLR
1987 bool
1988
1989config SYS_HAS_CPU_XLP
1990 bool
1991
1992config MIPS_MALTA_PM
1993 depends on MIPS_MALTA
1994 depends on PCI
1995 bool
1996 default y
1997
1998#
1999# CPU may reorder R->R, R->W, W->R, W->W
2000# Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2001#
2002config WEAK_ORDERING
2003 bool
2004
2005#
2006# CPU may reorder reads and writes beyond LL/SC
2007# CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2008#
2009config WEAK_REORDERING_BEYOND_LLSC
2010 bool
2011endmenu
2012
2013#
2014# These two indicate any level of the MIPS32 and MIPS64 architecture
2015#
2016config CPU_MIPS32
2017 bool
2018 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2019
2020config CPU_MIPS64
2021 bool
2022 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2023
2024#
2025# These two indicate the revision of the architecture, either Release 1 or Release 2
2026#
2027config CPU_MIPSR1
2028 bool
2029 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2030
2031config CPU_MIPSR2
2032 bool
2033 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2034 select CPU_HAS_RIXI
2035 select MIPS_SPRAM
2036
2037config CPU_MIPSR6
2038 bool
2039 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2040 select CPU_HAS_RIXI
2041 select HAVE_ARCH_BITREVERSE
2042 select MIPS_ASID_BITS_VARIABLE
2043 select MIPS_SPRAM
2044
2045config EVA
2046 bool
2047
2048config XPA
2049 bool
2050
2051config SYS_SUPPORTS_32BIT_KERNEL
2052 bool
2053config SYS_SUPPORTS_64BIT_KERNEL
2054 bool
2055config CPU_SUPPORTS_32BIT_KERNEL
2056 bool
2057config CPU_SUPPORTS_64BIT_KERNEL
2058 bool
2059config CPU_SUPPORTS_CPUFREQ
2060 bool
2061config CPU_SUPPORTS_ADDRWINCFG
2062 bool
2063config CPU_SUPPORTS_HUGEPAGES
2064 bool
2065config CPU_SUPPORTS_UNCACHED_ACCELERATED
2066 bool
2067config MIPS_PGD_C0_CONTEXT
2068 bool
2069 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2070
2071#
2072# Set to y for ptrace access to watch registers.
2073#
2074config HARDWARE_WATCHPOINTS
2075 bool
2076 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2077
2078menu "Kernel type"
2079
2080choice
2081 prompt "Kernel code model"
2082 help
2083 You should only select this option if you have a workload that
2084 actually benefits from 64-bit processing or if your machine has
2085 large memory. You will only be presented a single option in this
2086 menu if your system does not support both 32-bit and 64-bit kernels.
2087
2088config 32BIT
2089 bool "32-bit kernel"
2090 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2091 select TRAD_SIGNALS
2092 help
2093 Select this option if you want to build a 32-bit kernel.
2094
2095config 64BIT
2096 bool "64-bit kernel"
2097 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2098 help
2099 Select this option if you want to build a 64-bit kernel.
2100
2101endchoice
2102
2103config KVM_GUEST
2104 bool "KVM Guest Kernel"
2105 depends on BROKEN_ON_SMP
2106 help
2107 Select this option if building a guest kernel for KVM (Trap & Emulate)
2108 mode.
2109
2110config KVM_GUEST_TIMER_FREQ
2111 int "Count/Compare Timer Frequency (MHz)"
2112 depends on KVM_GUEST
2113 default 100
2114 help
2115 Set this to non-zero if building a guest kernel for KVM to skip RTC
2116 emulation when determining guest CPU Frequency. Instead, the guest's
2117 timer frequency is specified directly.
2118
2119config MIPS_VA_BITS_48
2120 bool "48 bits virtual memory"
2121 depends on 64BIT
2122 help
2123 Support a maximum at least 48 bits of application virtual
2124 memory. Default is 40 bits or less, depending on the CPU.
2125 For page sizes 16k and above, this option results in a small
2126 memory overhead for page tables. For 4k page size, a fourth
2127 level of page tables is added which imposes both a memory
2128 overhead as well as slower TLB fault handling.
2129
2130 If unsure, say N.
2131
2132choice
2133 prompt "Kernel page size"
2134 default PAGE_SIZE_4KB
2135
2136config PAGE_SIZE_4KB
2137 bool "4kB"
2138 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2139 help
2140 This option select the standard 4kB Linux page size. On some
2141 R3000-family processors this is the only available page size. Using
2142 4kB page size will minimize memory consumption and is therefore
2143 recommended for low memory systems.
2144
2145config PAGE_SIZE_8KB
2146 bool "8kB"
2147 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2148 depends on !MIPS_VA_BITS_48
2149 help
2150 Using 8kB page size will result in higher performance kernel at
2151 the price of higher memory consumption. This option is available
2152 only on R8000 and cnMIPS processors. Note that you will need a
2153 suitable Linux distribution to support this.
2154
2155config PAGE_SIZE_16KB
2156 bool "16kB"
2157 depends on !CPU_R3000 && !CPU_TX39XX
2158 help
2159 Using 16kB page size will result in higher performance kernel at
2160 the price of higher memory consumption. This option is available on
2161 all non-R3000 family processors. Note that you will need a suitable
2162 Linux distribution to support this.
2163
2164config PAGE_SIZE_32KB
2165 bool "32kB"
2166 depends on CPU_CAVIUM_OCTEON
2167 depends on !MIPS_VA_BITS_48
2168 help
2169 Using 32kB page size will result in higher performance kernel at
2170 the price of higher memory consumption. This option is available
2171 only on cnMIPS cores. Note that you will need a suitable Linux
2172 distribution to support this.
2173
2174config PAGE_SIZE_64KB
2175 bool "64kB"
2176 depends on !CPU_R3000 && !CPU_TX39XX
2177 help
2178 Using 64kB page size will result in higher performance kernel at
2179 the price of higher memory consumption. This option is available on
2180 all non-R3000 family processor. Not that at the time of this
2181 writing this option is still high experimental.
2182
2183endchoice
2184
2185config FORCE_MAX_ZONEORDER
2186 int "Maximum zone order"
2187 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2188 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2189 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2190 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2191 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2192 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2193 range 11 64
2194 default "11"
2195 help
2196 The kernel memory allocator divides physically contiguous memory
2197 blocks into "zones", where each zone is a power of two number of
2198 pages. This option selects the largest power of two that the kernel
2199 keeps in the memory allocator. If you need to allocate very large
2200 blocks of physically contiguous memory, then you may need to
2201 increase this value.
2202
2203 This config option is actually maximum order plus one. For example,
2204 a value of 11 means that the largest free memory block is 2^10 pages.
2205
2206 The page size is not necessarily 4KB. Keep this in mind
2207 when choosing a value for this option.
2208
2209config BOARD_SCACHE
2210 bool
2211
2212config IP22_CPU_SCACHE
2213 bool
2214 select BOARD_SCACHE
2215
2216#
2217# Support for a MIPS32 / MIPS64 style S-caches
2218#
2219config MIPS_CPU_SCACHE
2220 bool
2221 select BOARD_SCACHE
2222
2223config R5000_CPU_SCACHE
2224 bool
2225 select BOARD_SCACHE
2226
2227config RM7000_CPU_SCACHE
2228 bool
2229 select BOARD_SCACHE
2230
2231config SIBYTE_DMA_PAGEOPS
2232 bool "Use DMA to clear/copy pages"
2233 depends on CPU_SB1
2234 help
2235 Instead of using the CPU to zero and copy pages, use a Data Mover
2236 channel. These DMA channels are otherwise unused by the standard
2237 SiByte Linux port. Seems to give a small performance benefit.
2238
2239config CPU_HAS_PREFETCH
2240 bool
2241
2242config CPU_GENERIC_DUMP_TLB
2243 bool
2244 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
2245
2246config CPU_R4K_FPU
2247 bool
2248 default y if !(CPU_R3000 || CPU_TX39XX)
2249
2250config CPU_R4K_CACHE_TLB
2251 bool
2252 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2253
2254config MIPS_MT_SMP
2255 bool "MIPS MT SMP support (1 TC on each available VPE)"
2256 default y
2257 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2258 select CPU_MIPSR2_IRQ_VI
2259 select CPU_MIPSR2_IRQ_EI
2260 select SYNC_R4K
2261 select MIPS_MT
2262 select SMP
2263 select SMP_UP
2264 select SYS_SUPPORTS_SMP
2265 select SYS_SUPPORTS_SCHED_SMT
2266 select MIPS_PERF_SHARED_TC_COUNTERS
2267 help
2268 This is a kernel model which is known as SMVP. This is supported
2269 on cores with the MT ASE and uses the available VPEs to implement
2270 virtual processors which supports SMP. This is equivalent to the
2271 Intel Hyperthreading feature. For further information go to
2272 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2273
2274config MIPS_MT
2275 bool
2276
2277config SCHED_SMT
2278 bool "SMT (multithreading) scheduler support"
2279 depends on SYS_SUPPORTS_SCHED_SMT
2280 default n
2281 help
2282 SMT scheduler support improves the CPU scheduler's decision making
2283 when dealing with MIPS MT enabled cores at a cost of slightly
2284 increased overhead in some places. If unsure say N here.
2285
2286config SYS_SUPPORTS_SCHED_SMT
2287 bool
2288
2289config SYS_SUPPORTS_MULTITHREADING
2290 bool
2291
2292config MIPS_MT_FPAFF
2293 bool "Dynamic FPU affinity for FP-intensive threads"
2294 default y
2295 depends on MIPS_MT_SMP
2296
2297config MIPSR2_TO_R6_EMULATOR
2298 bool "MIPS R2-to-R6 emulator"
2299 depends on CPU_MIPSR6
2300 default y
2301 help
2302 Choose this option if you want to run non-R6 MIPS userland code.
2303 Even if you say 'Y' here, the emulator will still be disabled by
2304 default. You can enable it using the 'mipsr2emu' kernel option.
2305 The only reason this is a build-time option is to save ~14K from the
2306 final kernel image.
2307
2308config MIPS_VPE_LOADER
2309 bool "VPE loader support."
2310 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2311 select CPU_MIPSR2_IRQ_VI
2312 select CPU_MIPSR2_IRQ_EI
2313 select MIPS_MT
2314 help
2315 Includes a loader for loading an elf relocatable object
2316 onto another VPE and running it.
2317
2318config MIPS_VPE_LOADER_CMP
2319 bool
2320 default "y"
2321 depends on MIPS_VPE_LOADER && MIPS_CMP
2322
2323config MIPS_VPE_LOADER_MT
2324 bool
2325 default "y"
2326 depends on MIPS_VPE_LOADER && !MIPS_CMP
2327
2328config MIPS_VPE_LOADER_TOM
2329 bool "Load VPE program into memory hidden from linux"
2330 depends on MIPS_VPE_LOADER
2331 default y
2332 help
2333 The loader can use memory that is present but has been hidden from
2334 Linux using the kernel command line option "mem=xxMB". It's up to
2335 you to ensure the amount you put in the option and the space your
2336 program requires is less or equal to the amount physically present.
2337
2338config MIPS_VPE_APSP_API
2339 bool "Enable support for AP/SP API (RTLX)"
2340 depends on MIPS_VPE_LOADER
2341 help
2342
2343config MIPS_VPE_APSP_API_CMP
2344 bool
2345 default "y"
2346 depends on MIPS_VPE_APSP_API && MIPS_CMP
2347
2348config MIPS_VPE_APSP_API_MT
2349 bool
2350 default "y"
2351 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2352
2353config MIPS_CMP
2354 bool "MIPS CMP framework support (DEPRECATED)"
2355 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2356 select SMP
2357 select SYNC_R4K
2358 select SYS_SUPPORTS_SMP
2359 select WEAK_ORDERING
2360 default n
2361 help
2362 Select this if you are using a bootloader which implements the "CMP
2363 framework" protocol (ie. YAMON) and want your kernel to make use of
2364 its ability to start secondary CPUs.
2365
2366 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2367 instead of this.
2368
2369config MIPS_CPS
2370 bool "MIPS Coherent Processing System support"
2371 depends on SYS_SUPPORTS_MIPS_CPS
2372 select MIPS_CM
2373 select MIPS_CPS_PM if HOTPLUG_CPU
2374 select SMP
2375 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2376 select SYS_SUPPORTS_HOTPLUG_CPU
2377 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2378 select SYS_SUPPORTS_SMP
2379 select WEAK_ORDERING
2380 help
2381 Select this if you wish to run an SMP kernel across multiple cores
2382 within a MIPS Coherent Processing System. When this option is
2383 enabled the kernel will probe for other cores and boot them with
2384 no external assistance. It is safe to enable this when hardware
2385 support is unavailable.
2386
2387config MIPS_CPS_PM
2388 depends on MIPS_CPS
2389 bool
2390
2391config MIPS_CM
2392 bool
2393 select MIPS_CPC
2394
2395config MIPS_CPC
2396 bool
2397
2398config SB1_PASS_2_WORKAROUNDS
2399 bool
2400 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2401 default y
2402
2403config SB1_PASS_2_1_WORKAROUNDS
2404 bool
2405 depends on CPU_SB1 && CPU_SB1_PASS_2
2406 default y
2407
2408
2409config ARCH_PHYS_ADDR_T_64BIT
2410 bool
2411
2412choice
2413 prompt "SmartMIPS or microMIPS ASE support"
2414
2415config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2416 bool "None"
2417 help
2418 Select this if you want neither microMIPS nor SmartMIPS support
2419
2420config CPU_HAS_SMARTMIPS
2421 depends on SYS_SUPPORTS_SMARTMIPS
2422 bool "SmartMIPS"
2423 help
2424 SmartMIPS is a extension of the MIPS32 architecture aimed at
2425 increased security at both hardware and software level for
2426 smartcards. Enabling this option will allow proper use of the
2427 SmartMIPS instructions by Linux applications. However a kernel with
2428 this option will not work on a MIPS core without SmartMIPS core. If
2429 you don't know you probably don't have SmartMIPS and should say N
2430 here.
2431
2432config CPU_MICROMIPS
2433 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2434 bool "microMIPS"
2435 help
2436 When this option is enabled the kernel will be built using the
2437 microMIPS ISA
2438
2439endchoice
2440
2441config CPU_HAS_MSA
2442 bool "Support for the MIPS SIMD Architecture"
2443 depends on CPU_SUPPORTS_MSA
2444 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2445 help
2446 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2447 and a set of SIMD instructions to operate on them. When this option
2448 is enabled the kernel will support allocating & switching MSA
2449 vector register contexts. If you know that your kernel will only be
2450 running on CPUs which do not support MSA or that your userland will
2451 not be making use of it then you may wish to say N here to reduce
2452 the size & complexity of your kernel.
2453
2454 If unsure, say Y.
2455
2456config CPU_HAS_WB
2457 bool
2458
2459config XKS01
2460 bool
2461
2462config CPU_HAS_RIXI
2463 bool
2464
2465#
2466# Vectored interrupt mode is an R2 feature
2467#
2468config CPU_MIPSR2_IRQ_VI
2469 bool
2470
2471#
2472# Extended interrupt mode is an R2 feature
2473#
2474config CPU_MIPSR2_IRQ_EI
2475 bool
2476
2477config CPU_HAS_SYNC
2478 bool
2479 depends on !CPU_R3000
2480 default y
2481
2482#
2483# CPU non-features
2484#
2485config CPU_DADDI_WORKAROUNDS
2486 bool
2487
2488config CPU_R4000_WORKAROUNDS
2489 bool
2490 select CPU_R4400_WORKAROUNDS
2491
2492config CPU_R4400_WORKAROUNDS
2493 bool
2494
2495config MIPS_ASID_SHIFT
2496 int
2497 default 6 if CPU_R3000 || CPU_TX39XX
2498 default 4 if CPU_R8000
2499 default 0
2500
2501config MIPS_ASID_BITS
2502 int
2503 default 0 if MIPS_ASID_BITS_VARIABLE
2504 default 6 if CPU_R3000 || CPU_TX39XX
2505 default 8
2506
2507config MIPS_ASID_BITS_VARIABLE
2508 bool
2509
2510#
2511# - Highmem only makes sense for the 32-bit kernel.
2512# - The current highmem code will only work properly on physically indexed
2513# caches such as R3000, SB1, R7000 or those that look like they're virtually
2514# indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2515# moment we protect the user and offer the highmem option only on machines
2516# where it's known to be safe. This will not offer highmem on a few systems
2517# such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2518# indexed CPUs but we're playing safe.
2519# - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2520# know they might have memory configurations that could make use of highmem
2521# support.
2522#
2523config HIGHMEM
2524 bool "High Memory Support"
2525 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2526
2527config CPU_SUPPORTS_HIGHMEM
2528 bool
2529
2530config SYS_SUPPORTS_HIGHMEM
2531 bool
2532
2533config SYS_SUPPORTS_SMARTMIPS
2534 bool
2535
2536config SYS_SUPPORTS_MICROMIPS
2537 bool
2538
2539config SYS_SUPPORTS_MIPS16
2540 bool
2541 help
2542 This option must be set if a kernel might be executed on a MIPS16-
2543 enabled CPU even if MIPS16 is not actually being used. In other
2544 words, it makes the kernel MIPS16-tolerant.
2545
2546config CPU_SUPPORTS_MSA
2547 bool
2548
2549config ARCH_FLATMEM_ENABLE
2550 def_bool y
2551 depends on !NUMA && !CPU_LOONGSON2
2552
2553config ARCH_DISCONTIGMEM_ENABLE
2554 bool
2555 default y if SGI_IP27
2556 help
2557 Say Y to support efficient handling of discontiguous physical memory,
2558 for architectures which are either NUMA (Non-Uniform Memory Access)
2559 or have huge holes in the physical address space for other reasons.
2560 See <file:Documentation/vm/numa> for more.
2561
2562config ARCH_SPARSEMEM_ENABLE
2563 bool
2564 select SPARSEMEM_STATIC
2565
2566config NUMA
2567 bool "NUMA Support"
2568 depends on SYS_SUPPORTS_NUMA
2569 help
2570 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2571 Access). This option improves performance on systems with more
2572 than two nodes; on two node systems it is generally better to
2573 leave it disabled; on single node systems disable this option
2574 disabled.
2575
2576config SYS_SUPPORTS_NUMA
2577 bool
2578
2579config RELOCATABLE
2580 bool "Relocatable kernel"
2581 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2582 help
2583 This builds a kernel image that retains relocation information
2584 so it can be loaded someplace besides the default 1MB.
2585 The relocations make the kernel binary about 15% larger,
2586 but are discarded at runtime
2587
2588config RELOCATION_TABLE_SIZE
2589 hex "Relocation table size"
2590 depends on RELOCATABLE
2591 range 0x0 0x01000000
2592 default "0x00100000"
2593 ---help---
2594 A table of relocation data will be appended to the kernel binary
2595 and parsed at boot to fix up the relocated kernel.
2596
2597 This option allows the amount of space reserved for the table to be
2598 adjusted, although the default of 1Mb should be ok in most cases.
2599
2600 The build will fail and a valid size suggested if this is too small.
2601
2602 If unsure, leave at the default value.
2603
2604config RANDOMIZE_BASE
2605 bool "Randomize the address of the kernel image"
2606 depends on RELOCATABLE
2607 ---help---
2608 Randomizes the physical and virtual address at which the
2609 kernel image is loaded, as a security feature that
2610 deters exploit attempts relying on knowledge of the location
2611 of kernel internals.
2612
2613 Entropy is generated using any coprocessor 0 registers available.
2614
2615 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2616
2617 If unsure, say N.
2618
2619config RANDOMIZE_BASE_MAX_OFFSET
2620 hex "Maximum kASLR offset" if EXPERT
2621 depends on RANDOMIZE_BASE
2622 range 0x0 0x40000000 if EVA || 64BIT
2623 range 0x0 0x08000000
2624 default "0x01000000"
2625 ---help---
2626 When kASLR is active, this provides the maximum offset that will
2627 be applied to the kernel image. It should be set according to the
2628 amount of physical RAM available in the target system minus
2629 PHYSICAL_START and must be a power of 2.
2630
2631 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2632 EVA or 64-bit. The default is 16Mb.
2633
2634config NODES_SHIFT
2635 int
2636 default "6"
2637 depends on NEED_MULTIPLE_NODES
2638
2639config HW_PERF_EVENTS
2640 bool "Enable hardware performance counter support for perf events"
2641 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2642 default y
2643 help
2644 Enable hardware performance counter support for perf events. If
2645 disabled, perf events will use software events only.
2646
2647source "mm/Kconfig"
2648
2649config SMP
2650 bool "Multi-Processing support"
2651 depends on SYS_SUPPORTS_SMP
2652 help
2653 This enables support for systems with more than one CPU. If you have
2654 a system with only one CPU, say N. If you have a system with more
2655 than one CPU, say Y.
2656
2657 If you say N here, the kernel will run on uni- and multiprocessor
2658 machines, but will use only one CPU of a multiprocessor machine. If
2659 you say Y here, the kernel will run on many, but not all,
2660 uniprocessor machines. On a uniprocessor machine, the kernel
2661 will run faster if you say N here.
2662
2663 People using multiprocessor machines who say Y here should also say
2664 Y to "Enhanced Real Time Clock Support", below.
2665
2666 See also the SMP-HOWTO available at
2667 <http://www.tldp.org/docs.html#howto>.
2668
2669 If you don't know what to do here, say N.
2670
2671config HOTPLUG_CPU
2672 bool "Support for hot-pluggable CPUs"
2673 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2674 help
2675 Say Y here to allow turning CPUs off and on. CPUs can be
2676 controlled through /sys/devices/system/cpu.
2677 (Note: power management support will enable this option
2678 automatically on SMP systems. )
2679 Say N if you want to disable CPU hotplug.
2680
2681config SMP_UP
2682 bool
2683
2684config SYS_SUPPORTS_MIPS_CMP
2685 bool
2686
2687config SYS_SUPPORTS_MIPS_CPS
2688 bool
2689
2690config SYS_SUPPORTS_SMP
2691 bool
2692
2693config NR_CPUS_DEFAULT_4
2694 bool
2695
2696config NR_CPUS_DEFAULT_8
2697 bool
2698
2699config NR_CPUS_DEFAULT_16
2700 bool
2701
2702config NR_CPUS_DEFAULT_32
2703 bool
2704
2705config NR_CPUS_DEFAULT_64
2706 bool
2707
2708config NR_CPUS
2709 int "Maximum number of CPUs (2-256)"
2710 range 2 256
2711 depends on SMP
2712 default "4" if NR_CPUS_DEFAULT_4
2713 default "8" if NR_CPUS_DEFAULT_8
2714 default "16" if NR_CPUS_DEFAULT_16
2715 default "32" if NR_CPUS_DEFAULT_32
2716 default "64" if NR_CPUS_DEFAULT_64
2717 help
2718 This allows you to specify the maximum number of CPUs which this
2719 kernel will support. The maximum supported value is 32 for 32-bit
2720 kernel and 64 for 64-bit kernels; the minimum value which makes
2721 sense is 1 for Qemu (useful only for kernel debugging purposes)
2722 and 2 for all others.
2723
2724 This is purely to save memory - each supported CPU adds
2725 approximately eight kilobytes to the kernel image. For best
2726 performance should round up your number of processors to the next
2727 power of two.
2728
2729config MIPS_PERF_SHARED_TC_COUNTERS
2730 bool
2731
2732#
2733# Timer Interrupt Frequency Configuration
2734#
2735
2736choice
2737 prompt "Timer frequency"
2738 default HZ_250
2739 help
2740 Allows the configuration of the timer frequency.
2741
2742 config HZ_24
2743 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2744
2745 config HZ_48
2746 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2747
2748 config HZ_100
2749 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2750
2751 config HZ_128
2752 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2753
2754 config HZ_250
2755 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2756
2757 config HZ_256
2758 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2759
2760 config HZ_1000
2761 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2762
2763 config HZ_1024
2764 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2765
2766endchoice
2767
2768config SYS_SUPPORTS_24HZ
2769 bool
2770
2771config SYS_SUPPORTS_48HZ
2772 bool
2773
2774config SYS_SUPPORTS_100HZ
2775 bool
2776
2777config SYS_SUPPORTS_128HZ
2778 bool
2779
2780config SYS_SUPPORTS_250HZ
2781 bool
2782
2783config SYS_SUPPORTS_256HZ
2784 bool
2785
2786config SYS_SUPPORTS_1000HZ
2787 bool
2788
2789config SYS_SUPPORTS_1024HZ
2790 bool
2791
2792config SYS_SUPPORTS_ARBIT_HZ
2793 bool
2794 default y if !SYS_SUPPORTS_24HZ && \
2795 !SYS_SUPPORTS_48HZ && \
2796 !SYS_SUPPORTS_100HZ && \
2797 !SYS_SUPPORTS_128HZ && \
2798 !SYS_SUPPORTS_250HZ && \
2799 !SYS_SUPPORTS_256HZ && \
2800 !SYS_SUPPORTS_1000HZ && \
2801 !SYS_SUPPORTS_1024HZ
2802
2803config HZ
2804 int
2805 default 24 if HZ_24
2806 default 48 if HZ_48
2807 default 100 if HZ_100
2808 default 128 if HZ_128
2809 default 250 if HZ_250
2810 default 256 if HZ_256
2811 default 1000 if HZ_1000
2812 default 1024 if HZ_1024
2813
2814config SCHED_HRTICK
2815 def_bool HIGH_RES_TIMERS
2816
2817source "kernel/Kconfig.preempt"
2818
2819config KEXEC
2820 bool "Kexec system call"
2821 select KEXEC_CORE
2822 help
2823 kexec is a system call that implements the ability to shutdown your
2824 current kernel, and to start another kernel. It is like a reboot
2825 but it is independent of the system firmware. And like a reboot
2826 you can start any kernel with it, not just Linux.
2827
2828 The name comes from the similarity to the exec system call.
2829
2830 It is an ongoing process to be certain the hardware in a machine
2831 is properly shutdown, so do not be surprised if this code does not
2832 initially work for you. As of this writing the exact hardware
2833 interface is strongly in flux, so no good recommendation can be
2834 made.
2835
2836config CRASH_DUMP
2837 bool "Kernel crash dumps"
2838 help
2839 Generate crash dump after being started by kexec.
2840 This should be normally only set in special crash dump kernels
2841 which are loaded in the main kernel with kexec-tools into
2842 a specially reserved region and then later executed after
2843 a crash by kdump/kexec. The crash dump kernel must be compiled
2844 to a memory address not used by the main kernel or firmware using
2845 PHYSICAL_START.
2846
2847config PHYSICAL_START
2848 hex "Physical address where the kernel is loaded"
2849 default "0xffffffff84000000" if 64BIT
2850 default "0x84000000" if 32BIT
2851 depends on CRASH_DUMP
2852 help
2853 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2854 If you plan to use kernel for capturing the crash dump change
2855 this value to start of the reserved region (the "X" value as
2856 specified in the "crashkernel=YM@XM" command line boot parameter
2857 passed to the panic-ed kernel).
2858
2859config SECCOMP
2860 bool "Enable seccomp to safely compute untrusted bytecode"
2861 depends on PROC_FS
2862 default y
2863 help
2864 This kernel feature is useful for number crunching applications
2865 that may need to compute untrusted bytecode during their
2866 execution. By using pipes or other transports made available to
2867 the process as file descriptors supporting the read/write
2868 syscalls, it's possible to isolate those applications in
2869 their own address space using seccomp. Once seccomp is
2870 enabled via /proc/<pid>/seccomp, it cannot be disabled
2871 and the task is only allowed to execute a few safe syscalls
2872 defined by each seccomp mode.
2873
2874 If unsure, say Y. Only embedded should say N here.
2875
2876config MIPS_O32_FP64_SUPPORT
2877 bool "Support for O32 binaries using 64-bit FP"
2878 depends on 32BIT || MIPS32_O32
2879 help
2880 When this is enabled, the kernel will support use of 64-bit floating
2881 point registers with binaries using the O32 ABI along with the
2882 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2883 32-bit MIPS systems this support is at the cost of increasing the
2884 size and complexity of the compiled FPU emulator. Thus if you are
2885 running a MIPS32 system and know that none of your userland binaries
2886 will require 64-bit floating point, you may wish to reduce the size
2887 of your kernel & potentially improve FP emulation performance by
2888 saying N here.
2889
2890 Although binutils currently supports use of this flag the details
2891 concerning its effect upon the O32 ABI in userland are still being
2892 worked on. In order to avoid userland becoming dependant upon current
2893 behaviour before the details have been finalised, this option should
2894 be considered experimental and only enabled by those working upon
2895 said details.
2896
2897 If unsure, say N.
2898
2899config USE_OF
2900 bool
2901 select OF
2902 select OF_EARLY_FLATTREE
2903 select IRQ_DOMAIN
2904
2905config BUILTIN_DTB
2906 bool
2907
2908choice
2909 prompt "Kernel appended dtb support" if USE_OF
2910 default MIPS_NO_APPENDED_DTB
2911
2912 config MIPS_NO_APPENDED_DTB
2913 bool "None"
2914 help
2915 Do not enable appended dtb support.
2916
2917 config MIPS_ELF_APPENDED_DTB
2918 bool "vmlinux"
2919 help
2920 With this option, the boot code will look for a device tree binary
2921 DTB) included in the vmlinux ELF section .appended_dtb. By default
2922 it is empty and the DTB can be appended using binutils command
2923 objcopy:
2924
2925 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2926
2927 This is meant as a backward compatiblity convenience for those
2928 systems with a bootloader that can't be upgraded to accommodate
2929 the documented boot protocol using a device tree.
2930
2931 config MIPS_RAW_APPENDED_DTB
2932 bool "vmlinux.bin or vmlinuz.bin"
2933 help
2934 With this option, the boot code will look for a device tree binary
2935 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2936 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2937
2938 This is meant as a backward compatibility convenience for those
2939 systems with a bootloader that can't be upgraded to accommodate
2940 the documented boot protocol using a device tree.
2941
2942 Beware that there is very little in terms of protection against
2943 this option being confused by leftover garbage in memory that might
2944 look like a DTB header after a reboot if no actual DTB is appended
2945 to vmlinux.bin. Do not leave this option active in a production kernel
2946 if you don't intend to always append a DTB.
2947endchoice
2948
2949choice
2950 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2951 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2952 !MIPS_MALTA && \
2953 !CAVIUM_OCTEON_SOC
2954 default MIPS_CMDLINE_FROM_BOOTLOADER
2955
2956 config MIPS_CMDLINE_FROM_DTB
2957 depends on USE_OF
2958 bool "Dtb kernel arguments if available"
2959
2960 config MIPS_CMDLINE_DTB_EXTEND
2961 depends on USE_OF
2962 bool "Extend dtb kernel arguments with bootloader arguments"
2963
2964 config MIPS_CMDLINE_FROM_BOOTLOADER
2965 bool "Bootloader kernel arguments if available"
2966
2967 config MIPS_CMDLINE_BUILTIN_EXTEND
2968 depends on CMDLINE_BOOL
2969 bool "Extend builtin kernel arguments with bootloader arguments"
2970endchoice
2971
2972endmenu
2973
2974config LOCKDEP_SUPPORT
2975 bool
2976 default y
2977
2978config STACKTRACE_SUPPORT
2979 bool
2980 default y
2981
2982config HAVE_LATENCYTOP_SUPPORT
2983 bool
2984 default y
2985
2986config PGTABLE_LEVELS
2987 int
2988 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
2989 default 3 if 64BIT && !PAGE_SIZE_64KB
2990 default 2
2991
2992source "init/Kconfig"
2993
2994source "kernel/Kconfig.freezer"
2995
2996menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2997
2998config HW_HAS_EISA
2999 bool
3000config HW_HAS_PCI
3001 bool
3002
3003config PCI
3004 bool "Support for PCI controller"
3005 depends on HW_HAS_PCI
3006 select PCI_DOMAINS
3007 help
3008 Find out whether you have a PCI motherboard. PCI is the name of a
3009 bus system, i.e. the way the CPU talks to the other stuff inside
3010 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
3011 say Y, otherwise N.
3012
3013config HT_PCI
3014 bool "Support for HT-linked PCI"
3015 default y
3016 depends on CPU_LOONGSON3
3017 select PCI
3018 select PCI_DOMAINS
3019 help
3020 Loongson family machines use Hyper-Transport bus for inter-core
3021 connection and device connection. The PCI bus is a subordinate
3022 linked at HT. Choose Y for Loongson-3 based machines.
3023
3024config PCI_DOMAINS
3025 bool
3026
3027config PCI_DOMAINS_GENERIC
3028 bool
3029
3030config PCI_DRIVERS_GENERIC
3031 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3032 bool
3033
3034config PCI_DRIVERS_LEGACY
3035 def_bool !PCI_DRIVERS_GENERIC
3036 select NO_GENERIC_PCI_IOPORT_MAP
3037
3038source "drivers/pci/Kconfig"
3039
3040#
3041# ISA support is now enabled via select. Too many systems still have the one
3042# or other ISA chip on the board that users don't know about so don't expect
3043# users to choose the right thing ...
3044#
3045config ISA
3046 bool
3047
3048config EISA
3049 bool "EISA support"
3050 depends on HW_HAS_EISA
3051 select ISA
3052 select GENERIC_ISA_DMA
3053 ---help---
3054 The Extended Industry Standard Architecture (EISA) bus was
3055 developed as an open alternative to the IBM MicroChannel bus.
3056
3057 The EISA bus provided some of the features of the IBM MicroChannel
3058 bus while maintaining backward compatibility with cards made for
3059 the older ISA bus. The EISA bus saw limited use between 1988 and
3060 1995 when it was made obsolete by the PCI bus.
3061
3062 Say Y here if you are building a kernel for an EISA-based machine.
3063
3064 Otherwise, say N.
3065
3066source "drivers/eisa/Kconfig"
3067
3068config TC
3069 bool "TURBOchannel support"
3070 depends on MACH_DECSTATION
3071 help
3072 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3073 processors. TURBOchannel programming specifications are available
3074 at:
3075 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3076 and:
3077 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3078 Linux driver support status is documented at:
3079 <http://www.linux-mips.org/wiki/DECstation>
3080
3081config MMU
3082 bool
3083 default y
3084
3085config ARCH_MMAP_RND_BITS_MIN
3086 default 12 if 64BIT
3087 default 8
3088
3089config ARCH_MMAP_RND_BITS_MAX
3090 default 18 if 64BIT
3091 default 15
3092
3093config ARCH_MMAP_RND_COMPAT_BITS_MIN
3094 default 8
3095
3096config ARCH_MMAP_RND_COMPAT_BITS_MAX
3097 default 15
3098
3099config I8253
3100 bool
3101 select CLKSRC_I8253
3102 select CLKEVT_I8253
3103 select MIPS_EXTERNAL_TIMER
3104
3105config ZONE_DMA
3106 bool
3107
3108config ZONE_DMA32
3109 bool
3110
3111source "drivers/pcmcia/Kconfig"
3112
3113config RAPIDIO
3114 tristate "RapidIO support"
3115 depends on PCI
3116 default n
3117 help
3118 If you say Y here, the kernel will include drivers and
3119 infrastructure code to support RapidIO interconnect devices.
3120
3121source "drivers/rapidio/Kconfig"
3122
3123endmenu
3124
3125menu "Executable file formats"
3126
3127source "fs/Kconfig.binfmt"
3128
3129config TRAD_SIGNALS
3130 bool
3131
3132config MIPS32_COMPAT
3133 bool
3134
3135config COMPAT
3136 bool
3137
3138config SYSVIPC_COMPAT
3139 bool
3140
3141config MIPS32_O32
3142 bool "Kernel support for o32 binaries"
3143 depends on 64BIT
3144 select ARCH_WANT_OLD_COMPAT_IPC
3145 select COMPAT
3146 select MIPS32_COMPAT
3147 select SYSVIPC_COMPAT if SYSVIPC
3148 help
3149 Select this option if you want to run o32 binaries. These are pure
3150 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3151 existing binaries are in this format.
3152
3153 If unsure, say Y.
3154
3155config MIPS32_N32
3156 bool "Kernel support for n32 binaries"
3157 depends on 64BIT
3158 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3159 select COMPAT
3160 select MIPS32_COMPAT
3161 select SYSVIPC_COMPAT if SYSVIPC
3162 help
3163 Select this option if you want to run n32 binaries. These are
3164 64-bit binaries using 32-bit quantities for addressing and certain
3165 data that would normally be 64-bit. They are used in special
3166 cases.
3167
3168 If unsure, say N.
3169
3170config BINFMT_ELF32
3171 bool
3172 default y if MIPS32_O32 || MIPS32_N32
3173 select ELFCORE
3174
3175endmenu
3176
3177menu "Power management options"
3178
3179config ARCH_HIBERNATION_POSSIBLE
3180 def_bool y
3181 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3182
3183config ARCH_SUSPEND_POSSIBLE
3184 def_bool y
3185 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3186
3187source "kernel/power/Kconfig"
3188
3189endmenu
3190
3191config MIPS_EXTERNAL_TIMER
3192 bool
3193
3194menu "CPU Power Management"
3195
3196if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3197source "drivers/cpufreq/Kconfig"
3198endif
3199
3200source "drivers/cpuidle/Kconfig"
3201
3202endmenu
3203
3204source "net/Kconfig"
3205
3206source "drivers/Kconfig"
3207
3208source "drivers/firmware/Kconfig"
3209
3210source "fs/Kconfig"
3211
3212source "arch/mips/Kconfig.debug"
3213
3214source "security/Kconfig"
3215
3216source "crypto/Kconfig"
3217
3218source "lib/Kconfig"
3219
3220source "arch/mips/kvm/Kconfig"