1 # SPDX-License-Identifier: GPL-2.0
2 config MIPS
3 	bool
4 	default y
5 	select ARCH_32BIT_OFF_T if !64BIT
6 	select ARCH_BINFMT_ELF_STATE if MIPS_FP_SUPPORT
7 	select ARCH_CLOCKSOURCE_DATA
8 	select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
9 	select ARCH_HAS_UBSAN_SANITIZE_ALL
10 	select ARCH_SUPPORTS_UPROBES
11 	select ARCH_USE_BUILTIN_BSWAP
12 	select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
13 	select ARCH_USE_QUEUED_RWLOCKS
14 	select ARCH_USE_QUEUED_SPINLOCKS
15 	select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
16 	select ARCH_WANT_IPC_PARSE_VERSION
17 	select BUILDTIME_EXTABLE_SORT
18 	select CLONE_BACKWARDS
19 	select CPU_NO_EFFICIENT_FFS if (TARGET_ISA_REV < 1)
20 	select CPU_PM if CPU_IDLE
21 	select GENERIC_ATOMIC64 if !64BIT
22 	select GENERIC_CLOCKEVENTS
23 	select GENERIC_CMOS_UPDATE
24 	select GENERIC_CPU_AUTOPROBE
25 	select GENERIC_GETTIMEOFDAY
26 	select GENERIC_IOMAP
27 	select GENERIC_IRQ_PROBE
28 	select GENERIC_IRQ_SHOW
29 	select GENERIC_ISA_DMA if EISA
30 	select GENERIC_LIB_ASHLDI3
31 	select GENERIC_LIB_ASHRDI3
32 	select GENERIC_LIB_CMPDI2
33 	select GENERIC_LIB_LSHRDI3
34 	select GENERIC_LIB_UCMPDI2
35 	select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
36 	select GENERIC_SMP_IDLE_THREAD
37 	select GENERIC_TIME_VSYSCALL
38 	select GUP_GET_PTE_LOW_HIGH if CPU_MIPS32 && PHYS_ADDR_T_64BIT
39 	select HANDLE_DOMAIN_IRQ
40 	select HAVE_ARCH_COMPILER_H
41 	select HAVE_ARCH_JUMP_LABEL
42 	select HAVE_ARCH_KGDB
43 	select HAVE_ARCH_MMAP_RND_BITS if MMU
44 	select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
45 	select HAVE_ARCH_SECCOMP_FILTER
46 	select HAVE_ARCH_TRACEHOOK
47 	select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES
48 	select HAVE_ASM_MODVERSIONS
49 	select HAVE_EBPF_JIT if (!CPU_MICROMIPS)
50 	select HAVE_CONTEXT_TRACKING
51 	select HAVE_COPY_THREAD_TLS
52 	select HAVE_C_RECORDMCOUNT
53 	select HAVE_DEBUG_KMEMLEAK
54 	select HAVE_DEBUG_STACKOVERFLOW
55 	select HAVE_DMA_CONTIGUOUS
56 	select HAVE_DYNAMIC_FTRACE
57 	select HAVE_EXIT_THREAD
58 	select HAVE_FAST_GUP
59 	select HAVE_FTRACE_MCOUNT_RECORD
60 	select HAVE_FUNCTION_GRAPH_TRACER
61 	select HAVE_FUNCTION_TRACER
62 	select HAVE_IDE
63 	select HAVE_IOREMAP_PROT
64 	select HAVE_IRQ_EXIT_ON_IRQ_STACK
65 	select HAVE_IRQ_TIME_ACCOUNTING
66 	select HAVE_KPROBES
67 	select HAVE_KRETPROBES
68 	select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
69 	select HAVE_MEMBLOCK_NODE_MAP
70 	select HAVE_MOD_ARCH_SPECIFIC
71 	select HAVE_NMI
72 	select HAVE_OPROFILE
73 	select HAVE_PERF_EVENTS
74 	select HAVE_REGS_AND_STACK_ACCESS_API
75 	select HAVE_RSEQ
76 	select HAVE_STACKPROTECTOR
77 	select HAVE_SYSCALL_TRACEPOINTS
78 	select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
79 	select HAVE_GENERIC_VDSO
80 	select IRQ_FORCED_THREADING
81 	select ISA if EISA
82 	select MODULES_USE_ELF_RELA if MODULES && 64BIT
83 	select MODULES_USE_ELF_REL if MODULES
84 	select PERF_USE_VMALLOC
85 	select RTC_LIB
86 	select SYSCTL_EXCEPTION_TRACE
87 	select VIRT_TO_BUS
88 	select ARCH_HAS_PTE_SPECIAL if !(32BIT && CPU_HAS_RIXI)
89 
90 menu "Machine selection"
91 
92 choice
93 	prompt "System type"
94 	default MIPS_GENERIC
95 
96 config MIPS_GENERIC
97 	bool "Generic board-agnostic MIPS kernel"
98 	select BOOT_RAW
99 	select BUILTIN_DTB
100 	select CEVT_R4K
101 	select CLKSRC_MIPS_GIC
102 	select COMMON_CLK
103 	select CPU_MIPSR2_IRQ_VI
104 	select CPU_MIPSR2_IRQ_EI
105 	select CSRC_R4K
106 	select DMA_PERDEV_COHERENT
107 	select HAVE_PCI
108 	select IRQ_MIPS_CPU
109 	select LIBFDT
110 	select MIPS_AUTO_PFN_OFFSET
111 	select MIPS_CPU_SCACHE
112 	select MIPS_GIC
113 	select MIPS_L1_CACHE_SHIFT_7
114 	select NO_EXCEPT_FILL
115 	select PCI_DRIVERS_GENERIC
116 	select PINCTRL
117 	select SMP_UP if SMP
118 	select SWAP_IO_SPACE
119 	select SYS_HAS_CPU_MIPS32_R1
120 	select SYS_HAS_CPU_MIPS32_R2
121 	select SYS_HAS_CPU_MIPS32_R6
122 	select SYS_HAS_CPU_MIPS64_R1
123 	select SYS_HAS_CPU_MIPS64_R2
124 	select SYS_HAS_CPU_MIPS64_R6
125 	select SYS_SUPPORTS_32BIT_KERNEL
126 	select SYS_SUPPORTS_64BIT_KERNEL
127 	select SYS_SUPPORTS_BIG_ENDIAN
128 	select SYS_SUPPORTS_HIGHMEM
129 	select SYS_SUPPORTS_LITTLE_ENDIAN
130 	select SYS_SUPPORTS_MICROMIPS
131 	select SYS_SUPPORTS_MIPS_CPS
132 	select SYS_SUPPORTS_MIPS16
133 	select SYS_SUPPORTS_MULTITHREADING
134 	select SYS_SUPPORTS_RELOCATABLE
135 	select SYS_SUPPORTS_SMARTMIPS
136 	select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
137 	select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
138 	select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
139 	select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
140 	select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
141 	select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
142 	select USE_OF
143 	select UHI_BOOT
144 	help
145 	  Select this to build a kernel which aims to support multiple boards,
146 	  generally using a flattened device tree passed from the bootloader
147 	  using the boot protocol defined in the UHI (Unified Hosting
148 	  Interface) specification.
149 
150 config MIPS_ALCHEMY
151 	bool "Alchemy processor based machines"
152 	select PHYS_ADDR_T_64BIT
153 	select CEVT_R4K
154 	select CSRC_R4K
155 	select IRQ_MIPS_CPU
156 	select DMA_MAYBE_COHERENT	# Au1000,1500,1100 aren't, rest is
157 	select SYS_HAS_CPU_MIPS32_R1
158 	select SYS_SUPPORTS_32BIT_KERNEL
159 	select SYS_SUPPORTS_APM_EMULATION
160 	select GPIOLIB
161 	select SYS_SUPPORTS_ZBOOT
162 	select COMMON_CLK
163 
164 config AR7
165 	bool "Texas Instruments AR7"
166 	select BOOT_ELF32
167 	select DMA_NONCOHERENT
168 	select CEVT_R4K
169 	select CSRC_R4K
170 	select IRQ_MIPS_CPU
171 	select NO_EXCEPT_FILL
172 	select SWAP_IO_SPACE
173 	select SYS_HAS_CPU_MIPS32_R1
174 	select SYS_HAS_EARLY_PRINTK
175 	select SYS_SUPPORTS_32BIT_KERNEL
176 	select SYS_SUPPORTS_LITTLE_ENDIAN
177 	select SYS_SUPPORTS_MIPS16
178 	select SYS_SUPPORTS_ZBOOT_UART16550
179 	select GPIOLIB
180 	select VLYNQ
181 	select HAVE_CLK
182 	help
183 	  Support for the Texas Instruments AR7 System-on-a-Chip
184 	  family: TNETD7100, 7200 and 7300.
185 
186 config ATH25
187 	bool "Atheros AR231x/AR531x SoC support"
188 	select CEVT_R4K
189 	select CSRC_R4K
190 	select DMA_NONCOHERENT
191 	select IRQ_MIPS_CPU
192 	select IRQ_DOMAIN
193 	select SYS_HAS_CPU_MIPS32_R1
194 	select SYS_SUPPORTS_BIG_ENDIAN
195 	select SYS_SUPPORTS_32BIT_KERNEL
196 	select SYS_HAS_EARLY_PRINTK
197 	help
198 	  Support for Atheros AR231x and Atheros AR531x based boards
199 
200 config ATH79
201 	bool "Atheros AR71XX/AR724X/AR913X based boards"
202 	select ARCH_HAS_RESET_CONTROLLER
203 	select BOOT_RAW
204 	select CEVT_R4K
205 	select CSRC_R4K
206 	select DMA_NONCOHERENT
207 	select GPIOLIB
208 	select PINCTRL
209 	select HAVE_CLK
210 	select COMMON_CLK
211 	select CLKDEV_LOOKUP
212 	select IRQ_MIPS_CPU
213 	select SYS_HAS_CPU_MIPS32_R2
214 	select SYS_HAS_EARLY_PRINTK
215 	select SYS_SUPPORTS_32BIT_KERNEL
216 	select SYS_SUPPORTS_BIG_ENDIAN
217 	select SYS_SUPPORTS_MIPS16
218 	select SYS_SUPPORTS_ZBOOT_UART_PROM
219 	select USE_OF
220 	select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
221 	help
222 	  Support for the Atheros AR71XX/AR724X/AR913X SoCs.
223 
224 config BMIPS_GENERIC
225 	bool "Broadcom Generic BMIPS kernel"
226 	select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
227 	select ARCH_HAS_PHYS_TO_DMA
228 	select BOOT_RAW
229 	select NO_EXCEPT_FILL
230 	select USE_OF
231 	select CEVT_R4K
232 	select CSRC_R4K
233 	select SYNC_R4K
234 	select COMMON_CLK
235 	select BCM6345_L1_IRQ
236 	select BCM7038_L1_IRQ
237 	select BCM7120_L2_IRQ
238 	select BRCMSTB_L2_IRQ
239 	select IRQ_MIPS_CPU
240 	select DMA_NONCOHERENT
241 	select SYS_SUPPORTS_32BIT_KERNEL
242 	select SYS_SUPPORTS_LITTLE_ENDIAN
243 	select SYS_SUPPORTS_BIG_ENDIAN
244 	select SYS_SUPPORTS_HIGHMEM
245 	select SYS_HAS_CPU_BMIPS32_3300
246 	select SYS_HAS_CPU_BMIPS4350
247 	select SYS_HAS_CPU_BMIPS4380
248 	select SYS_HAS_CPU_BMIPS5000
249 	select SWAP_IO_SPACE
250 	select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
251 	select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
252 	select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
253 	select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
254 	select HARDIRQS_SW_RESEND
255 	help
256 	  Build a generic DT-based kernel image that boots on select
257 	  BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
258 	  box chips.  Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
259 	  must be set appropriately for your board.
260 
261 config BCM47XX
262 	bool "Broadcom BCM47XX based boards"
263 	select BOOT_RAW
264 	select CEVT_R4K
265 	select CSRC_R4K
266 	select DMA_NONCOHERENT
267 	select HAVE_PCI
268 	select IRQ_MIPS_CPU
269 	select SYS_HAS_CPU_MIPS32_R1
270 	select NO_EXCEPT_FILL
271 	select SYS_SUPPORTS_32BIT_KERNEL
272 	select SYS_SUPPORTS_LITTLE_ENDIAN
273 	select SYS_SUPPORTS_MIPS16
274 	select SYS_SUPPORTS_ZBOOT
275 	select SYS_HAS_EARLY_PRINTK
276 	select USE_GENERIC_EARLY_PRINTK_8250
277 	select GPIOLIB
278 	select LEDS_GPIO_REGISTER
279 	select BCM47XX_NVRAM
280 	select BCM47XX_SPROM
281 	select BCM47XX_SSB if !BCM47XX_BCMA
282 	help
283 	  Support for BCM47XX based boards
284 
285 config BCM63XX
286 	bool "Broadcom BCM63XX based boards"
287 	select BOOT_RAW
288 	select CEVT_R4K
289 	select CSRC_R4K
290 	select SYNC_R4K
291 	select DMA_NONCOHERENT
292 	select IRQ_MIPS_CPU
293 	select SYS_SUPPORTS_32BIT_KERNEL
294 	select SYS_SUPPORTS_BIG_ENDIAN
295 	select SYS_HAS_EARLY_PRINTK
296 	select SWAP_IO_SPACE
297 	select GPIOLIB
298 	select HAVE_CLK
299 	select MIPS_L1_CACHE_SHIFT_4
300 	select CLKDEV_LOOKUP
301 	help
302 	  Support for BCM63XX based boards
303 
304 config MIPS_COBALT
305 	bool "Cobalt Server"
306 	select CEVT_R4K
307 	select CSRC_R4K
308 	select CEVT_GT641XX
309 	select DMA_NONCOHERENT
310 	select FORCE_PCI
311 	select I8253
312 	select I8259
313 	select IRQ_MIPS_CPU
314 	select IRQ_GT641XX
315 	select PCI_GT64XXX_PCI0
316 	select SYS_HAS_CPU_NEVADA
317 	select SYS_HAS_EARLY_PRINTK
318 	select SYS_SUPPORTS_32BIT_KERNEL
319 	select SYS_SUPPORTS_64BIT_KERNEL
320 	select SYS_SUPPORTS_LITTLE_ENDIAN
321 	select USE_GENERIC_EARLY_PRINTK_8250
322 
323 config MACH_DECSTATION
324 	bool "DECstations"
325 	select BOOT_ELF32
326 	select CEVT_DS1287
327 	select CEVT_R4K if CPU_R4X00
328 	select CSRC_IOASIC
329 	select CSRC_R4K if CPU_R4X00
330 	select CPU_DADDI_WORKAROUNDS if 64BIT
331 	select CPU_R4000_WORKAROUNDS if 64BIT
332 	select CPU_R4400_WORKAROUNDS if 64BIT
333 	select DMA_NONCOHERENT
334 	select NO_IOPORT_MAP
335 	select IRQ_MIPS_CPU
336 	select SYS_HAS_CPU_R3000
337 	select SYS_HAS_CPU_R4X00
338 	select SYS_SUPPORTS_32BIT_KERNEL
339 	select SYS_SUPPORTS_64BIT_KERNEL
340 	select SYS_SUPPORTS_LITTLE_ENDIAN
341 	select SYS_SUPPORTS_128HZ
342 	select SYS_SUPPORTS_256HZ
343 	select SYS_SUPPORTS_1024HZ
344 	select MIPS_L1_CACHE_SHIFT_4
345 	help
346 	  This enables support for DEC's MIPS based workstations.  For details
347 	  see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
348 	  DECstation porting pages on <http://decstation.unix-ag.org/>.
349 
350 	  If you have one of the following DECstation Models you definitely
351 	  want to choose R4xx0 for the CPU Type:
352 
353 		DECstation 5000/50
354 		DECstation 5000/150
355 		DECstation 5000/260
356 		DECsystem 5900/260
357 
358 	  otherwise choose R3000.
359 
360 config MACH_JAZZ
361 	bool "Jazz family of machines"
362 	select ARCH_MIGHT_HAVE_PC_PARPORT
363 	select ARCH_MIGHT_HAVE_PC_SERIO
364 	select FW_ARC
365 	select FW_ARC32
366 	select ARCH_MAY_HAVE_PC_FDC
367 	select CEVT_R4K
368 	select CSRC_R4K
369 	select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
370 	select GENERIC_ISA_DMA
371 	select HAVE_PCSPKR_PLATFORM
372 	select IRQ_MIPS_CPU
373 	select I8253
374 	select I8259
375 	select ISA
376 	select SYS_HAS_CPU_R4X00
377 	select SYS_SUPPORTS_32BIT_KERNEL
378 	select SYS_SUPPORTS_64BIT_KERNEL
379 	select SYS_SUPPORTS_100HZ
380 	help
381 	  This a family of machines based on the MIPS R4030 chipset which was
382 	  used by several vendors to build RISC/os and Windows NT workstations.
383 	  Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
384 	  Olivetti M700-10 workstations.
385 
386 config MACH_INGENIC
387 	bool "Ingenic SoC based machines"
388 	select SYS_SUPPORTS_32BIT_KERNEL
389 	select SYS_SUPPORTS_LITTLE_ENDIAN
390 	select SYS_SUPPORTS_ZBOOT_UART16550
391 	select CPU_SUPPORTS_HUGEPAGES
392 	select DMA_NONCOHERENT
393 	select IRQ_MIPS_CPU
394 	select PINCTRL
395 	select GPIOLIB
396 	select COMMON_CLK
397 	select GENERIC_IRQ_CHIP
398 	select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
399 	select USE_OF
400 	select LIBFDT
401 
402 config LANTIQ
403 	bool "Lantiq based platforms"
404 	select DMA_NONCOHERENT
405 	select IRQ_MIPS_CPU
406 	select CEVT_R4K
407 	select CSRC_R4K
408 	select SYS_HAS_CPU_MIPS32_R1
409 	select SYS_HAS_CPU_MIPS32_R2
410 	select SYS_SUPPORTS_BIG_ENDIAN
411 	select SYS_SUPPORTS_32BIT_KERNEL
412 	select SYS_SUPPORTS_MIPS16
413 	select SYS_SUPPORTS_MULTITHREADING
414 	select SYS_SUPPORTS_VPE_LOADER
415 	select SYS_HAS_EARLY_PRINTK
416 	select GPIOLIB
417 	select SWAP_IO_SPACE
418 	select BOOT_RAW
419 	select CLKDEV_LOOKUP
420 	select USE_OF
421 	select PINCTRL
422 	select PINCTRL_LANTIQ
423 	select ARCH_HAS_RESET_CONTROLLER
424 	select RESET_CONTROLLER
425 
426 config LASAT
427 	bool "LASAT Networks platforms"
428 	select CEVT_R4K
429 	select CRC32
430 	select CSRC_R4K
431 	select DMA_NONCOHERENT
432 	select SYS_HAS_EARLY_PRINTK
433 	select HAVE_PCI
434 	select IRQ_MIPS_CPU
435 	select PCI_GT64XXX_PCI0
436 	select MIPS_NILE4
437 	select R5000_CPU_SCACHE
438 	select SYS_HAS_CPU_R5000
439 	select SYS_SUPPORTS_32BIT_KERNEL
440 	select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
441 	select SYS_SUPPORTS_LITTLE_ENDIAN
442 
443 config MACH_LOONGSON32
444 	bool "Loongson-1 family of machines"
445 	select SYS_SUPPORTS_ZBOOT
446 	help
447 	  This enables support for the Loongson-1 family of machines.
448 
449 	  Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
450 	  the Institute of Computing Technology (ICT), Chinese Academy of
451 	  Sciences (CAS).
452 
453 config MACH_LOONGSON64
454 	bool "Loongson-2/3 family of machines"
455 	select SYS_SUPPORTS_ZBOOT
456 	help
457 	  This enables the support of Loongson-2/3 family of machines.
458 
459 	  Loongson-2 is a family of single-core CPUs and Loongson-3 is a
460 	  family of multi-core CPUs. They are both 64-bit general-purpose
461 	  MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
462 	  of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
463 	  in the People's Republic of China. The chief architect is Professor
464 	  Weiwu Hu.
465 
466 config MACH_PISTACHIO
467 	bool "IMG Pistachio SoC based boards"
468 	select BOOT_ELF32
469 	select BOOT_RAW
470 	select CEVT_R4K
471 	select CLKSRC_MIPS_GIC
472 	select COMMON_CLK
473 	select CSRC_R4K
474 	select DMA_NONCOHERENT
475 	select GPIOLIB
476 	select IRQ_MIPS_CPU
477 	select LIBFDT
478 	select MFD_SYSCON
479 	select MIPS_CPU_SCACHE
480 	select MIPS_GIC
481 	select PINCTRL
482 	select REGULATOR
483 	select SYS_HAS_CPU_MIPS32_R2
484 	select SYS_SUPPORTS_32BIT_KERNEL
485 	select SYS_SUPPORTS_LITTLE_ENDIAN
486 	select SYS_SUPPORTS_MIPS_CPS
487 	select SYS_SUPPORTS_MULTITHREADING
488 	select SYS_SUPPORTS_RELOCATABLE
489 	select SYS_SUPPORTS_ZBOOT
490 	select SYS_HAS_EARLY_PRINTK
491 	select USE_GENERIC_EARLY_PRINTK_8250
492 	select USE_OF
493 	help
494 	  This enables support for the IMG Pistachio SoC platform.
495 
496 config MIPS_MALTA
497 	bool "MIPS Malta board"
498 	select ARCH_MAY_HAVE_PC_FDC
499 	select ARCH_MIGHT_HAVE_PC_PARPORT
500 	select ARCH_MIGHT_HAVE_PC_SERIO
501 	select BOOT_ELF32
502 	select BOOT_RAW
503 	select BUILTIN_DTB
504 	select CEVT_R4K
505 	select CLKSRC_MIPS_GIC
506 	select COMMON_CLK
507 	select CSRC_R4K
508 	select DMA_MAYBE_COHERENT
509 	select GENERIC_ISA_DMA
510 	select HAVE_PCSPKR_PLATFORM
511 	select HAVE_PCI
512 	select I8253
513 	select I8259
514 	select IRQ_MIPS_CPU
515 	select LIBFDT
516 	select MIPS_BONITO64
517 	select MIPS_CPU_SCACHE
518 	select MIPS_GIC
519 	select MIPS_L1_CACHE_SHIFT_6
520 	select MIPS_MSC
521 	select PCI_GT64XXX_PCI0
522 	select SMP_UP if SMP
523 	select SWAP_IO_SPACE
524 	select SYS_HAS_CPU_MIPS32_R1
525 	select SYS_HAS_CPU_MIPS32_R2
526 	select SYS_HAS_CPU_MIPS32_R3_5
527 	select SYS_HAS_CPU_MIPS32_R5
528 	select SYS_HAS_CPU_MIPS32_R6
529 	select SYS_HAS_CPU_MIPS64_R1
530 	select SYS_HAS_CPU_MIPS64_R2
531 	select SYS_HAS_CPU_MIPS64_R6
532 	select SYS_HAS_CPU_NEVADA
533 	select SYS_HAS_CPU_RM7000
534 	select SYS_SUPPORTS_32BIT_KERNEL
535 	select SYS_SUPPORTS_64BIT_KERNEL
536 	select SYS_SUPPORTS_BIG_ENDIAN
537 	select SYS_SUPPORTS_HIGHMEM
538 	select SYS_SUPPORTS_LITTLE_ENDIAN
539 	select SYS_SUPPORTS_MICROMIPS
540 	select SYS_SUPPORTS_MIPS16
541 	select SYS_SUPPORTS_MIPS_CMP
542 	select SYS_SUPPORTS_MIPS_CPS
543 	select SYS_SUPPORTS_MULTITHREADING
544 	select SYS_SUPPORTS_RELOCATABLE
545 	select SYS_SUPPORTS_SMARTMIPS
546 	select SYS_SUPPORTS_VPE_LOADER
547 	select SYS_SUPPORTS_ZBOOT
548 	select USE_OF
549 	select ZONE_DMA32 if 64BIT
550 	help
551 	  This enables support for the MIPS Technologies Malta evaluation
552 	  board.
553 
554 config MACH_PIC32
555 	bool "Microchip PIC32 Family"
556 	help
557 	  This enables support for the Microchip PIC32 family of platforms.
558 
559 	  Microchip PIC32 is a family of general-purpose 32 bit MIPS core
560 	  microcontrollers.
561 
562 config NEC_MARKEINS
563 	bool "NEC EMMA2RH Mark-eins board"
564 	select SOC_EMMA2RH
565 	select HAVE_PCI
566 	help
567 	  This enables support for the NEC Electronics Mark-eins boards.
568 
569 config MACH_VR41XX
570 	bool "NEC VR4100 series based machines"
571 	select CEVT_R4K
572 	select CSRC_R4K
573 	select SYS_HAS_CPU_VR41XX
574 	select SYS_SUPPORTS_MIPS16
575 	select GPIOLIB
576 
577 config NXP_STB220
578 	bool "NXP STB220 board"
579 	select SOC_PNX833X
580 	help
581 	  Support for NXP Semiconductors STB220 Development Board.
582 
583 config NXP_STB225
584 	bool "NXP 225 board"
585 	select SOC_PNX833X
586 	select SOC_PNX8335
587 	help
588 	  Support for NXP Semiconductors STB225 Development Board.
589 
590 config PMC_MSP
591 	bool "PMC-Sierra MSP chipsets"
592 	select CEVT_R4K
593 	select CSRC_R4K
594 	select DMA_NONCOHERENT
595 	select SWAP_IO_SPACE
596 	select NO_EXCEPT_FILL
597 	select BOOT_RAW
598 	select SYS_HAS_CPU_MIPS32_R1
599 	select SYS_HAS_CPU_MIPS32_R2
600 	select SYS_SUPPORTS_32BIT_KERNEL
601 	select SYS_SUPPORTS_BIG_ENDIAN
602 	select SYS_SUPPORTS_MIPS16
603 	select IRQ_MIPS_CPU
604 	select SERIAL_8250
605 	select SERIAL_8250_CONSOLE
606 	select USB_EHCI_BIG_ENDIAN_MMIO
607 	select USB_EHCI_BIG_ENDIAN_DESC
608 	help
609 	  This adds support for the PMC-Sierra family of Multi-Service
610 	  Processor System-On-A-Chips.  These parts include a number
611 	  of integrated peripherals, interfaces and DSPs in addition to
612 	  a variety of MIPS cores.
613 
614 config RALINK
615 	bool "Ralink based machines"
616 	select CEVT_R4K
617 	select CSRC_R4K
618 	select BOOT_RAW
619 	select DMA_NONCOHERENT
620 	select IRQ_MIPS_CPU
621 	select USE_OF
622 	select SYS_HAS_CPU_MIPS32_R1
623 	select SYS_HAS_CPU_MIPS32_R2
624 	select SYS_SUPPORTS_32BIT_KERNEL
625 	select SYS_SUPPORTS_LITTLE_ENDIAN
626 	select SYS_SUPPORTS_MIPS16
627 	select SYS_HAS_EARLY_PRINTK
628 	select CLKDEV_LOOKUP
629 	select ARCH_HAS_RESET_CONTROLLER
630 	select RESET_CONTROLLER
631 
632 config SGI_IP22
633 	bool "SGI IP22 (Indy/Indigo2)"
634 	select FW_ARC
635 	select FW_ARC32
636 	select ARCH_MIGHT_HAVE_PC_SERIO
637 	select BOOT_ELF32
638 	select CEVT_R4K
639 	select CSRC_R4K
640 	select DEFAULT_SGI_PARTITION
641 	select DMA_NONCOHERENT
642 	select HAVE_EISA
643 	select I8253
644 	select I8259
645 	select IP22_CPU_SCACHE
646 	select IRQ_MIPS_CPU
647 	select GENERIC_ISA_DMA_SUPPORT_BROKEN
648 	select SGI_HAS_I8042
649 	select SGI_HAS_INDYDOG
650 	select SGI_HAS_HAL2
651 	select SGI_HAS_SEEQ
652 	select SGI_HAS_WD93
653 	select SGI_HAS_ZILOG
654 	select SWAP_IO_SPACE
655 	select SYS_HAS_CPU_R4X00
656 	select SYS_HAS_CPU_R5000
657 	#
658 	# Disable EARLY_PRINTK for now since it leads to overwritten prom
659 	# memory during early boot on some machines.
660 	#
661 	# See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
662 	# for a more details discussion
663 	#
664 	# select SYS_HAS_EARLY_PRINTK
665 	select SYS_SUPPORTS_32BIT_KERNEL
666 	select SYS_SUPPORTS_64BIT_KERNEL
667 	select SYS_SUPPORTS_BIG_ENDIAN
668 	select MIPS_L1_CACHE_SHIFT_7
669 	help
670 	  This are the SGI Indy, Challenge S and Indigo2, as well as certain
671 	  OEM variants like the Tandem CMN B006S. To compile a Linux kernel
672 	  that runs on these, say Y here.
673 
674 config SGI_IP27
675 	bool "SGI IP27 (Origin200/2000)"
676 	select ARCH_HAS_PHYS_TO_DMA
677 	select FW_ARC
678 	select FW_ARC64
679 	select BOOT_ELF64
680 	select DEFAULT_SGI_PARTITION
681 	select SYS_HAS_EARLY_PRINTK
682 	select HAVE_PCI
683 	select IRQ_MIPS_CPU
684 	select IRQ_DOMAIN_HIERARCHY
685 	select NR_CPUS_DEFAULT_64
686 	select PCI_DRIVERS_GENERIC
687 	select PCI_XTALK_BRIDGE
688 	select SYS_HAS_CPU_R10000
689 	select SYS_SUPPORTS_64BIT_KERNEL
690 	select SYS_SUPPORTS_BIG_ENDIAN
691 	select SYS_SUPPORTS_NUMA
692 	select SYS_SUPPORTS_SMP
693 	select MIPS_L1_CACHE_SHIFT_7
694 	help
695 	  This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
696 	  workstations.  To compile a Linux kernel that runs on these, say Y
697 	  here.
698 
699 config SGI_IP28
700 	bool "SGI IP28 (Indigo2 R10k)"
701 	select FW_ARC
702 	select FW_ARC64
703 	select ARCH_MIGHT_HAVE_PC_SERIO
704 	select BOOT_ELF64
705 	select CEVT_R4K
706 	select CSRC_R4K
707 	select DEFAULT_SGI_PARTITION
708 	select DMA_NONCOHERENT
709 	select GENERIC_ISA_DMA_SUPPORT_BROKEN
710 	select IRQ_MIPS_CPU
711 	select HAVE_EISA
712 	select I8253
713 	select I8259
714 	select SGI_HAS_I8042
715 	select SGI_HAS_INDYDOG
716 	select SGI_HAS_HAL2
717 	select SGI_HAS_SEEQ
718 	select SGI_HAS_WD93
719 	select SGI_HAS_ZILOG
720 	select SWAP_IO_SPACE
721 	select SYS_HAS_CPU_R10000
722 	#
723 	# Disable EARLY_PRINTK for now since it leads to overwritten prom
724 	# memory during early boot on some machines.
725 	#
726 	# See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
727 	# for a more details discussion
728 	#
729 	# select SYS_HAS_EARLY_PRINTK
730 	select SYS_SUPPORTS_64BIT_KERNEL
731 	select SYS_SUPPORTS_BIG_ENDIAN
732 	select MIPS_L1_CACHE_SHIFT_7
733 	help
734 	  This is the SGI Indigo2 with R10000 processor.  To compile a Linux
735 	  kernel that runs on these, say Y here.
736 
737 config SGI_IP32
738 	bool "SGI IP32 (O2)"
739 	select ARCH_HAS_PHYS_TO_DMA
740 	select FW_ARC
741 	select FW_ARC32
742 	select BOOT_ELF32
743 	select CEVT_R4K
744 	select CSRC_R4K
745 	select DMA_NONCOHERENT
746 	select HAVE_PCI
747 	select IRQ_MIPS_CPU
748 	select R5000_CPU_SCACHE
749 	select RM7000_CPU_SCACHE
750 	select SYS_HAS_CPU_R5000
751 	select SYS_HAS_CPU_R10000 if BROKEN
752 	select SYS_HAS_CPU_RM7000
753 	select SYS_HAS_CPU_NEVADA
754 	select SYS_SUPPORTS_64BIT_KERNEL
755 	select SYS_SUPPORTS_BIG_ENDIAN
756 	help
757 	  If you want this kernel to run on SGI O2 workstation, say Y here.
758 
759 config SIBYTE_CRHINE
760 	bool "Sibyte BCM91120C-CRhine"
761 	select BOOT_ELF32
762 	select SIBYTE_BCM1120
763 	select SWAP_IO_SPACE
764 	select SYS_HAS_CPU_SB1
765 	select SYS_SUPPORTS_BIG_ENDIAN
766 	select SYS_SUPPORTS_LITTLE_ENDIAN
767 
768 config SIBYTE_CARMEL
769 	bool "Sibyte BCM91120x-Carmel"
770 	select BOOT_ELF32
771 	select SIBYTE_BCM1120
772 	select SWAP_IO_SPACE
773 	select SYS_HAS_CPU_SB1
774 	select SYS_SUPPORTS_BIG_ENDIAN
775 	select SYS_SUPPORTS_LITTLE_ENDIAN
776 
777 config SIBYTE_CRHONE
778 	bool "Sibyte BCM91125C-CRhone"
779 	select BOOT_ELF32
780 	select SIBYTE_BCM1125
781 	select SWAP_IO_SPACE
782 	select SYS_HAS_CPU_SB1
783 	select SYS_SUPPORTS_BIG_ENDIAN
784 	select SYS_SUPPORTS_HIGHMEM
785 	select SYS_SUPPORTS_LITTLE_ENDIAN
786 
787 config SIBYTE_RHONE
788 	bool "Sibyte BCM91125E-Rhone"
789 	select BOOT_ELF32
790 	select SIBYTE_BCM1125H
791 	select SWAP_IO_SPACE
792 	select SYS_HAS_CPU_SB1
793 	select SYS_SUPPORTS_BIG_ENDIAN
794 	select SYS_SUPPORTS_LITTLE_ENDIAN
795 
796 config SIBYTE_SWARM
797 	bool "Sibyte BCM91250A-SWARM"
798 	select BOOT_ELF32
799 	select HAVE_PATA_PLATFORM
800 	select SIBYTE_SB1250
801 	select SWAP_IO_SPACE
802 	select SYS_HAS_CPU_SB1
803 	select SYS_SUPPORTS_BIG_ENDIAN
804 	select SYS_SUPPORTS_HIGHMEM
805 	select SYS_SUPPORTS_LITTLE_ENDIAN
806 	select ZONE_DMA32 if 64BIT
807 	select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
808 
809 config SIBYTE_LITTLESUR
810 	bool "Sibyte BCM91250C2-LittleSur"
811 	select BOOT_ELF32
812 	select HAVE_PATA_PLATFORM
813 	select SIBYTE_SB1250
814 	select SWAP_IO_SPACE
815 	select SYS_HAS_CPU_SB1
816 	select SYS_SUPPORTS_BIG_ENDIAN
817 	select SYS_SUPPORTS_HIGHMEM
818 	select SYS_SUPPORTS_LITTLE_ENDIAN
819 	select ZONE_DMA32 if 64BIT
820 
821 config SIBYTE_SENTOSA
822 	bool "Sibyte BCM91250E-Sentosa"
823 	select BOOT_ELF32
824 	select SIBYTE_SB1250
825 	select SWAP_IO_SPACE
826 	select SYS_HAS_CPU_SB1
827 	select SYS_SUPPORTS_BIG_ENDIAN
828 	select SYS_SUPPORTS_LITTLE_ENDIAN
829 	select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
830 
831 config SIBYTE_BIGSUR
832 	bool "Sibyte BCM91480B-BigSur"
833 	select BOOT_ELF32
834 	select NR_CPUS_DEFAULT_4
835 	select SIBYTE_BCM1x80
836 	select SWAP_IO_SPACE
837 	select SYS_HAS_CPU_SB1
838 	select SYS_SUPPORTS_BIG_ENDIAN
839 	select SYS_SUPPORTS_HIGHMEM
840 	select SYS_SUPPORTS_LITTLE_ENDIAN
841 	select ZONE_DMA32 if 64BIT
842 	select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
843 
844 config SNI_RM
845 	bool "SNI RM200/300/400"
846 	select FW_ARC if CPU_LITTLE_ENDIAN
847 	select FW_ARC32 if CPU_LITTLE_ENDIAN
848 	select FW_SNIPROM if CPU_BIG_ENDIAN
849 	select ARCH_MAY_HAVE_PC_FDC
850 	select ARCH_MIGHT_HAVE_PC_PARPORT
851 	select ARCH_MIGHT_HAVE_PC_SERIO
852 	select BOOT_ELF32
853 	select CEVT_R4K
854 	select CSRC_R4K
855 	select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
856 	select DMA_NONCOHERENT
857 	select GENERIC_ISA_DMA
858 	select HAVE_EISA
859 	select HAVE_PCSPKR_PLATFORM
860 	select HAVE_PCI
861 	select IRQ_MIPS_CPU
862 	select I8253
863 	select I8259
864 	select ISA
865 	select SWAP_IO_SPACE if CPU_BIG_ENDIAN
866 	select SYS_HAS_CPU_R4X00
867 	select SYS_HAS_CPU_R5000
868 	select SYS_HAS_CPU_R10000
869 	select R5000_CPU_SCACHE
870 	select SYS_HAS_EARLY_PRINTK
871 	select SYS_SUPPORTS_32BIT_KERNEL
872 	select SYS_SUPPORTS_64BIT_KERNEL
873 	select SYS_SUPPORTS_BIG_ENDIAN
874 	select SYS_SUPPORTS_HIGHMEM
875 	select SYS_SUPPORTS_LITTLE_ENDIAN
876 	help
877 	  The SNI RM200/300/400 are MIPS-based machines manufactured by
878 	  Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
879 	  Technology and now in turn merged with Fujitsu.  Say Y here to
880 	  support this machine type.
881 
882 config MACH_TX39XX
883 	bool "Toshiba TX39 series based machines"
884 
885 config MACH_TX49XX
886 	bool "Toshiba TX49 series based machines"
887 
888 config MIKROTIK_RB532
889 	bool "Mikrotik RB532 boards"
890 	select CEVT_R4K
891 	select CSRC_R4K
892 	select DMA_NONCOHERENT
893 	select HAVE_PCI
894 	select IRQ_MIPS_CPU
895 	select SYS_HAS_CPU_MIPS32_R1
896 	select SYS_SUPPORTS_32BIT_KERNEL
897 	select SYS_SUPPORTS_LITTLE_ENDIAN
898 	select SWAP_IO_SPACE
899 	select BOOT_RAW
900 	select GPIOLIB
901 	select MIPS_L1_CACHE_SHIFT_4
902 	help
903 	  Support the Mikrotik(tm) RouterBoard 532 series,
904 	  based on the IDT RC32434 SoC.
905 
906 config CAVIUM_OCTEON_SOC
907 	bool "Cavium Networks Octeon SoC based boards"
908 	select CEVT_R4K
909 	select ARCH_HAS_PHYS_TO_DMA
910 	select HAVE_RAPIDIO
911 	select PHYS_ADDR_T_64BIT
912 	select SYS_SUPPORTS_64BIT_KERNEL
913 	select SYS_SUPPORTS_BIG_ENDIAN
914 	select EDAC_SUPPORT
915 	select EDAC_ATOMIC_SCRUB
916 	select SYS_SUPPORTS_LITTLE_ENDIAN
917 	select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
918 	select SYS_HAS_EARLY_PRINTK
919 	select SYS_HAS_CPU_CAVIUM_OCTEON
920 	select HAVE_PCI
921 	select ZONE_DMA32
922 	select HOLES_IN_ZONE
923 	select GPIOLIB
924 	select LIBFDT
925 	select USE_OF
926 	select ARCH_SPARSEMEM_ENABLE
927 	select SYS_SUPPORTS_SMP
928 	select NR_CPUS_DEFAULT_64
929 	select MIPS_NR_CPU_NR_MAP_1024
930 	select BUILTIN_DTB
931 	select MTD_COMPLEX_MAPPINGS
932 	select SWIOTLB
933 	select SYS_SUPPORTS_RELOCATABLE
934 	help
935 	  This option supports all of the Octeon reference boards from Cavium
936 	  Networks. It builds a kernel that dynamically determines the Octeon
937 	  CPU type and supports all known board reference implementations.
938 	  Some of the supported boards are:
939 		EBT3000
940 		EBH3000
941 		EBH3100
942 		Thunder
943 		Kodama
944 		Hikari
945 	  Say Y here for most Octeon reference boards.
946 
947 config NLM_XLR_BOARD
948 	bool "Netlogic XLR/XLS based systems"
949 	select BOOT_ELF32
950 	select NLM_COMMON
951 	select SYS_HAS_CPU_XLR
952 	select SYS_SUPPORTS_SMP
953 	select HAVE_PCI
954 	select SWAP_IO_SPACE
955 	select SYS_SUPPORTS_32BIT_KERNEL
956 	select SYS_SUPPORTS_64BIT_KERNEL
957 	select PHYS_ADDR_T_64BIT
958 	select SYS_SUPPORTS_BIG_ENDIAN
959 	select SYS_SUPPORTS_HIGHMEM
960 	select NR_CPUS_DEFAULT_32
961 	select CEVT_R4K
962 	select CSRC_R4K
963 	select IRQ_MIPS_CPU
964 	select ZONE_DMA32 if 64BIT
965 	select SYNC_R4K
966 	select SYS_HAS_EARLY_PRINTK
967 	select SYS_SUPPORTS_ZBOOT
968 	select SYS_SUPPORTS_ZBOOT_UART16550
969 	help
970 	  Support for systems based on Netlogic XLR and XLS processors.
971 	  Say Y here if you have a XLR or XLS based board.
972 
973 config NLM_XLP_BOARD
974 	bool "Netlogic XLP based systems"
975 	select BOOT_ELF32
976 	select NLM_COMMON
977 	select SYS_HAS_CPU_XLP
978 	select SYS_SUPPORTS_SMP
979 	select HAVE_PCI
980 	select SYS_SUPPORTS_32BIT_KERNEL
981 	select SYS_SUPPORTS_64BIT_KERNEL
982 	select PHYS_ADDR_T_64BIT
983 	select GPIOLIB
984 	select SYS_SUPPORTS_BIG_ENDIAN
985 	select SYS_SUPPORTS_LITTLE_ENDIAN
986 	select SYS_SUPPORTS_HIGHMEM
987 	select NR_CPUS_DEFAULT_32
988 	select CEVT_R4K
989 	select CSRC_R4K
990 	select IRQ_MIPS_CPU
991 	select ZONE_DMA32 if 64BIT
992 	select SYNC_R4K
993 	select SYS_HAS_EARLY_PRINTK
994 	select USE_OF
995 	select SYS_SUPPORTS_ZBOOT
996 	select SYS_SUPPORTS_ZBOOT_UART16550
997 	help
998 	  This board is based on Netlogic XLP Processor.
999 	  Say Y here if you have a XLP based board.
1000 
1001 config MIPS_PARAVIRT
1002 	bool "Para-Virtualized guest system"
1003 	select CEVT_R4K
1004 	select CSRC_R4K
1005 	select SYS_SUPPORTS_64BIT_KERNEL
1006 	select SYS_SUPPORTS_32BIT_KERNEL
1007 	select SYS_SUPPORTS_BIG_ENDIAN
1008 	select SYS_SUPPORTS_SMP
1009 	select NR_CPUS_DEFAULT_4
1010 	select SYS_HAS_EARLY_PRINTK
1011 	select SYS_HAS_CPU_MIPS32_R2
1012 	select SYS_HAS_CPU_MIPS64_R2
1013 	select SYS_HAS_CPU_CAVIUM_OCTEON
1014 	select HAVE_PCI
1015 	select SWAP_IO_SPACE
1016 	help
1017 	  This option supports guest running under ????
1018 
1019 endchoice
1020 
1021 source "arch/mips/alchemy/Kconfig"
1022 source "arch/mips/ath25/Kconfig"
1023 source "arch/mips/ath79/Kconfig"
1024 source "arch/mips/bcm47xx/Kconfig"
1025 source "arch/mips/bcm63xx/Kconfig"
1026 source "arch/mips/bmips/Kconfig"
1027 source "arch/mips/generic/Kconfig"
1028 source "arch/mips/jazz/Kconfig"
1029 source "arch/mips/jz4740/Kconfig"
1030 source "arch/mips/lantiq/Kconfig"
1031 source "arch/mips/lasat/Kconfig"
1032 source "arch/mips/pic32/Kconfig"
1033 source "arch/mips/pistachio/Kconfig"
1034 source "arch/mips/pmcs-msp71xx/Kconfig"
1035 source "arch/mips/ralink/Kconfig"
1036 source "arch/mips/sgi-ip27/Kconfig"
1037 source "arch/mips/sibyte/Kconfig"
1038 source "arch/mips/txx9/Kconfig"
1039 source "arch/mips/vr41xx/Kconfig"
1040 source "arch/mips/cavium-octeon/Kconfig"
1041 source "arch/mips/loongson32/Kconfig"
1042 source "arch/mips/loongson64/Kconfig"
1043 source "arch/mips/netlogic/Kconfig"
1044 source "arch/mips/paravirt/Kconfig"
1045 
1046 endmenu
1047 
1048 config GENERIC_HWEIGHT
1049 	bool
1050 	default y
1051 
1052 config GENERIC_CALIBRATE_DELAY
1053 	bool
1054 	default y
1055 
1056 config SCHED_OMIT_FRAME_POINTER
1057 	bool
1058 	default y
1059 
1060 #
1061 # Select some configuration options automatically based on user selections.
1062 #
1063 config FW_ARC
1064 	bool
1065 
1066 config ARCH_MAY_HAVE_PC_FDC
1067 	bool
1068 
1069 config BOOT_RAW
1070 	bool
1071 
1072 config CEVT_BCM1480
1073 	bool
1074 
1075 config CEVT_DS1287
1076 	bool
1077 
1078 config CEVT_GT641XX
1079 	bool
1080 
1081 config CEVT_R4K
1082 	bool
1083 
1084 config CEVT_SB1250
1085 	bool
1086 
1087 config CEVT_TXX9
1088 	bool
1089 
1090 config CSRC_BCM1480
1091 	bool
1092 
1093 config CSRC_IOASIC
1094 	bool
1095 
1096 config CSRC_R4K
1097 	bool
1098 
1099 config CSRC_SB1250
1100 	bool
1101 
1102 config MIPS_CLOCK_VSYSCALL
1103 	def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1104 
1105 config GPIO_TXX9
1106 	select GPIOLIB
1107 	bool
1108 
1109 config FW_CFE
1110 	bool
1111 
1112 config ARCH_SUPPORTS_UPROBES
1113 	bool
1114 
1115 config DMA_MAYBE_COHERENT
1116 	select ARCH_HAS_DMA_COHERENCE_H
1117 	select DMA_NONCOHERENT
1118 	bool
1119 
1120 config DMA_PERDEV_COHERENT
1121 	bool
1122 	select ARCH_HAS_SETUP_DMA_OPS
1123 	select DMA_NONCOHERENT
1124 
1125 config DMA_NONCOHERENT
1126 	bool
1127 	#
1128 	# MIPS allows mixing "slightly different" Cacheability and Coherency
1129 	# Attribute bits.  It is believed that the uncached access through
1130 	# KSEG1 and the implementation specific "uncached accelerated" used
1131 	# by pgprot_writcombine can be mixed, and the latter sometimes provides
1132 	# significant advantages.
1133 	#
1134 	select ARCH_HAS_DMA_WRITE_COMBINE
1135 	select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1136 	select ARCH_HAS_UNCACHED_SEGMENT
1137 	select NEED_DMA_MAP_STATE
1138 	select ARCH_HAS_DMA_COHERENT_TO_PFN
1139 	select DMA_NONCOHERENT_CACHE_SYNC
1140 
1141 config SYS_HAS_EARLY_PRINTK
1142 	bool
1143 
1144 config SYS_SUPPORTS_HOTPLUG_CPU
1145 	bool
1146 
1147 config MIPS_BONITO64
1148 	bool
1149 
1150 config MIPS_MSC
1151 	bool
1152 
1153 config MIPS_NILE4
1154 	bool
1155 
1156 config SYNC_R4K
1157 	bool
1158 
1159 config MIPS_MACHINE
1160 	def_bool n
1161 
1162 config NO_IOPORT_MAP
1163 	def_bool n
1164 
1165 config GENERIC_CSUM
1166 	bool
1167 	default y if !CPU_HAS_LOAD_STORE_LR
1168 
1169 config GENERIC_ISA_DMA
1170 	bool
1171 	select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1172 	select ISA_DMA_API
1173 
1174 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1175 	bool
1176 	select GENERIC_ISA_DMA
1177 
1178 config ISA_DMA_API
1179 	bool
1180 
1181 config HOLES_IN_ZONE
1182 	bool
1183 
1184 config SYS_SUPPORTS_RELOCATABLE
1185 	bool
1186 	help
1187 	  Selected if the platform supports relocating the kernel.
1188 	  The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1189 	  to allow access to command line and entropy sources.
1190 
1191 config MIPS_CBPF_JIT
1192 	def_bool y
1193 	depends on BPF_JIT && HAVE_CBPF_JIT
1194 
1195 config MIPS_EBPF_JIT
1196 	def_bool y
1197 	depends on BPF_JIT && HAVE_EBPF_JIT
1198 
1199 
1200 #
1201 # Endianness selection.  Sufficiently obscure so many users don't know what to
1202 # answer,so we try hard to limit the available choices.  Also the use of a
1203 # choice statement should be more obvious to the user.
1204 #
1205 choice
1206 	prompt "Endianness selection"
1207 	help
1208 	  Some MIPS machines can be configured for either little or big endian
1209 	  byte order. These modes require different kernels and a different
1210 	  Linux distribution.  In general there is one preferred byteorder for a
1211 	  particular system but some systems are just as commonly used in the
1212 	  one or the other endianness.
1213 
1214 config CPU_BIG_ENDIAN
1215 	bool "Big endian"
1216 	depends on SYS_SUPPORTS_BIG_ENDIAN
1217 
1218 config CPU_LITTLE_ENDIAN
1219 	bool "Little endian"
1220 	depends on SYS_SUPPORTS_LITTLE_ENDIAN
1221 
1222 endchoice
1223 
1224 config EXPORT_UASM
1225 	bool
1226 
1227 config SYS_SUPPORTS_APM_EMULATION
1228 	bool
1229 
1230 config SYS_SUPPORTS_BIG_ENDIAN
1231 	bool
1232 
1233 config SYS_SUPPORTS_LITTLE_ENDIAN
1234 	bool
1235 
1236 config SYS_SUPPORTS_HUGETLBFS
1237 	bool
1238 	depends on CPU_SUPPORTS_HUGEPAGES
1239 	default y
1240 
1241 config MIPS_HUGE_TLB_SUPPORT
1242 	def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1243 
1244 config IRQ_CPU_RM7K
1245 	bool
1246 
1247 config IRQ_MSP_SLP
1248 	bool
1249 
1250 config IRQ_MSP_CIC
1251 	bool
1252 
1253 config IRQ_TXX9
1254 	bool
1255 
1256 config IRQ_GT641XX
1257 	bool
1258 
1259 config PCI_GT64XXX_PCI0
1260 	bool
1261 
1262 config PCI_XTALK_BRIDGE
1263 	bool
1264 
1265 config NO_EXCEPT_FILL
1266 	bool
1267 
1268 config SOC_EMMA2RH
1269 	bool
1270 	select CEVT_R4K
1271 	select CSRC_R4K
1272 	select DMA_NONCOHERENT
1273 	select IRQ_MIPS_CPU
1274 	select SWAP_IO_SPACE
1275 	select SYS_HAS_CPU_R5500
1276 	select SYS_SUPPORTS_32BIT_KERNEL
1277 	select SYS_SUPPORTS_64BIT_KERNEL
1278 	select SYS_SUPPORTS_BIG_ENDIAN
1279 
1280 config SOC_PNX833X
1281 	bool
1282 	select CEVT_R4K
1283 	select CSRC_R4K
1284 	select IRQ_MIPS_CPU
1285 	select DMA_NONCOHERENT
1286 	select SYS_HAS_CPU_MIPS32_R2
1287 	select SYS_SUPPORTS_32BIT_KERNEL
1288 	select SYS_SUPPORTS_LITTLE_ENDIAN
1289 	select SYS_SUPPORTS_BIG_ENDIAN
1290 	select SYS_SUPPORTS_MIPS16
1291 	select CPU_MIPSR2_IRQ_VI
1292 
1293 config SOC_PNX8335
1294 	bool
1295 	select SOC_PNX833X
1296 
1297 config MIPS_SPRAM
1298 	bool
1299 
1300 config SWAP_IO_SPACE
1301 	bool
1302 
1303 config SGI_HAS_INDYDOG
1304 	bool
1305 
1306 config SGI_HAS_HAL2
1307 	bool
1308 
1309 config SGI_HAS_SEEQ
1310 	bool
1311 
1312 config SGI_HAS_WD93
1313 	bool
1314 
1315 config SGI_HAS_ZILOG
1316 	bool
1317 
1318 config SGI_HAS_I8042
1319 	bool
1320 
1321 config DEFAULT_SGI_PARTITION
1322 	bool
1323 
1324 config FW_ARC32
1325 	bool
1326 
1327 config FW_SNIPROM
1328 	bool
1329 
1330 config BOOT_ELF32
1331 	bool
1332 
1333 config MIPS_L1_CACHE_SHIFT_4
1334 	bool
1335 
1336 config MIPS_L1_CACHE_SHIFT_5
1337 	bool
1338 
1339 config MIPS_L1_CACHE_SHIFT_6
1340 	bool
1341 
1342 config MIPS_L1_CACHE_SHIFT_7
1343 	bool
1344 
1345 config MIPS_L1_CACHE_SHIFT
1346 	int
1347 	default "7" if MIPS_L1_CACHE_SHIFT_7
1348 	default "6" if MIPS_L1_CACHE_SHIFT_6
1349 	default "5" if MIPS_L1_CACHE_SHIFT_5
1350 	default "4" if MIPS_L1_CACHE_SHIFT_4
1351 	default "5"
1352 
1353 config HAVE_STD_PC_SERIAL_PORT
1354 	bool
1355 
1356 config ARC_CONSOLE
1357 	bool "ARC console support"
1358 	depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1359 
1360 config ARC_MEMORY
1361 	bool
1362 	depends on MACH_JAZZ || SNI_RM || SGI_IP32
1363 	default y
1364 
1365 config ARC_PROMLIB
1366 	bool
1367 	depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1368 	default y
1369 
1370 config FW_ARC64
1371 	bool
1372 
1373 config BOOT_ELF64
1374 	bool
1375 
1376 menu "CPU selection"
1377 
1378 choice
1379 	prompt "CPU type"
1380 	default CPU_R4X00
1381 
1382 config CPU_LOONGSON3
1383 	bool "Loongson 3 CPU"
1384 	depends on SYS_HAS_CPU_LOONGSON3
1385 	select ARCH_HAS_PHYS_TO_DMA
1386 	select CPU_SUPPORTS_64BIT_KERNEL
1387 	select CPU_SUPPORTS_HIGHMEM
1388 	select CPU_SUPPORTS_HUGEPAGES
1389 	select CPU_HAS_LOAD_STORE_LR
1390 	select WEAK_ORDERING
1391 	select WEAK_REORDERING_BEYOND_LLSC
1392 	select MIPS_PGD_C0_CONTEXT
1393 	select MIPS_L1_CACHE_SHIFT_6
1394 	select GPIOLIB
1395 	select SWIOTLB
1396 	help
1397 		The Loongson 3 processor implements the MIPS64R2 instruction
1398 		set with many extensions.
1399 
1400 config LOONGSON3_ENHANCEMENT
1401 	bool "New Loongson 3 CPU Enhancements"
1402 	default n
1403 	select CPU_MIPSR2
1404 	select CPU_HAS_PREFETCH
1405 	depends on CPU_LOONGSON3
1406 	help
1407 	  New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1408 	  R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1409 	  FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1410 	  Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1411 	  Fast TLB refill support, etc.
1412 
1413 	  This option enable those enhancements which are not probed at run
1414 	  time. If you want a generic kernel to run on all Loongson 3 machines,
1415 	  please say 'N' here. If you want a high-performance kernel to run on
1416 	  new Loongson 3 machines only, please say 'Y' here.
1417 
1418 config CPU_LOONGSON3_WORKAROUNDS
1419 	bool "Old Loongson 3 LLSC Workarounds"
1420 	default y if SMP
1421 	depends on CPU_LOONGSON3
1422 	help
1423 	  Loongson 3 processors have the llsc issues which require workarounds.
1424 	  Without workarounds the system may hang unexpectedly.
1425 
1426 	  Newer Loongson 3 will fix these issues and no workarounds are needed.
1427 	  The workarounds have no significant side effect on them but may
1428 	  decrease the performance of the system so this option should be
1429 	  disabled unless the kernel is intended to be run on old systems.
1430 
1431 	  If unsure, please say Y.
1432 
1433 config CPU_LOONGSON2E
1434 	bool "Loongson 2E"
1435 	depends on SYS_HAS_CPU_LOONGSON2E
1436 	select CPU_LOONGSON2
1437 	help
1438 	  The Loongson 2E processor implements the MIPS III instruction set
1439 	  with many extensions.
1440 
1441 	  It has an internal FPGA northbridge, which is compatible to
1442 	  bonito64.
1443 
1444 config CPU_LOONGSON2F
1445 	bool "Loongson 2F"
1446 	depends on SYS_HAS_CPU_LOONGSON2F
1447 	select CPU_LOONGSON2
1448 	select GPIOLIB
1449 	help
1450 	  The Loongson 2F processor implements the MIPS III instruction set
1451 	  with many extensions.
1452 
1453 	  Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1454 	  have a similar programming interface with FPGA northbridge used in
1455 	  Loongson2E.
1456 
1457 config CPU_LOONGSON1B
1458 	bool "Loongson 1B"
1459 	depends on SYS_HAS_CPU_LOONGSON1B
1460 	select CPU_LOONGSON1
1461 	select LEDS_GPIO_REGISTER
1462 	help
1463 	  The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1464 	  Release 1 instruction set and part of the MIPS32 Release 2
1465 	  instruction set.
1466 
1467 config CPU_LOONGSON1C
1468 	bool "Loongson 1C"
1469 	depends on SYS_HAS_CPU_LOONGSON1C
1470 	select CPU_LOONGSON1
1471 	select LEDS_GPIO_REGISTER
1472 	help
1473 	  The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1474 	  Release 1 instruction set and part of the MIPS32 Release 2
1475 	  instruction set.
1476 
1477 config CPU_MIPS32_R1
1478 	bool "MIPS32 Release 1"
1479 	depends on SYS_HAS_CPU_MIPS32_R1
1480 	select CPU_HAS_PREFETCH
1481 	select CPU_HAS_LOAD_STORE_LR
1482 	select CPU_SUPPORTS_32BIT_KERNEL
1483 	select CPU_SUPPORTS_HIGHMEM
1484 	help
1485 	  Choose this option to build a kernel for release 1 or later of the
1486 	  MIPS32 architecture.  Most modern embedded systems with a 32-bit
1487 	  MIPS processor are based on a MIPS32 processor.  If you know the
1488 	  specific type of processor in your system, choose those that one
1489 	  otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1490 	  Release 2 of the MIPS32 architecture is available since several
1491 	  years so chances are you even have a MIPS32 Release 2 processor
1492 	  in which case you should choose CPU_MIPS32_R2 instead for better
1493 	  performance.
1494 
1495 config CPU_MIPS32_R2
1496 	bool "MIPS32 Release 2"
1497 	depends on SYS_HAS_CPU_MIPS32_R2
1498 	select CPU_HAS_PREFETCH
1499 	select CPU_HAS_LOAD_STORE_LR
1500 	select CPU_SUPPORTS_32BIT_KERNEL
1501 	select CPU_SUPPORTS_HIGHMEM
1502 	select CPU_SUPPORTS_MSA
1503 	select HAVE_KVM
1504 	help
1505 	  Choose this option to build a kernel for release 2 or later of the
1506 	  MIPS32 architecture.  Most modern embedded systems with a 32-bit
1507 	  MIPS processor are based on a MIPS32 processor.  If you know the
1508 	  specific type of processor in your system, choose those that one
1509 	  otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1510 
1511 config CPU_MIPS32_R6
1512 	bool "MIPS32 Release 6"
1513 	depends on SYS_HAS_CPU_MIPS32_R6
1514 	select CPU_HAS_PREFETCH
1515 	select CPU_SUPPORTS_32BIT_KERNEL
1516 	select CPU_SUPPORTS_HIGHMEM
1517 	select CPU_SUPPORTS_MSA
1518 	select HAVE_KVM
1519 	select MIPS_O32_FP64_SUPPORT
1520 	help
1521 	  Choose this option to build a kernel for release 6 or later of the
1522 	  MIPS32 architecture.  New MIPS processors, starting with the Warrior
1523 	  family, are based on a MIPS32r6 processor. If you own an older
1524 	  processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1525 
1526 config CPU_MIPS64_R1
1527 	bool "MIPS64 Release 1"
1528 	depends on SYS_HAS_CPU_MIPS64_R1
1529 	select CPU_HAS_PREFETCH
1530 	select CPU_HAS_LOAD_STORE_LR
1531 	select CPU_SUPPORTS_32BIT_KERNEL
1532 	select CPU_SUPPORTS_64BIT_KERNEL
1533 	select CPU_SUPPORTS_HIGHMEM
1534 	select CPU_SUPPORTS_HUGEPAGES
1535 	help
1536 	  Choose this option to build a kernel for release 1 or later of the
1537 	  MIPS64 architecture.  Many modern embedded systems with a 64-bit
1538 	  MIPS processor are based on a MIPS64 processor.  If you know the
1539 	  specific type of processor in your system, choose those that one
1540 	  otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1541 	  Release 2 of the MIPS64 architecture is available since several
1542 	  years so chances are you even have a MIPS64 Release 2 processor
1543 	  in which case you should choose CPU_MIPS64_R2 instead for better
1544 	  performance.
1545 
1546 config CPU_MIPS64_R2
1547 	bool "MIPS64 Release 2"
1548 	depends on SYS_HAS_CPU_MIPS64_R2
1549 	select CPU_HAS_PREFETCH
1550 	select CPU_HAS_LOAD_STORE_LR
1551 	select CPU_SUPPORTS_32BIT_KERNEL
1552 	select CPU_SUPPORTS_64BIT_KERNEL
1553 	select CPU_SUPPORTS_HIGHMEM
1554 	select CPU_SUPPORTS_HUGEPAGES
1555 	select CPU_SUPPORTS_MSA
1556 	select HAVE_KVM
1557 	help
1558 	  Choose this option to build a kernel for release 2 or later of the
1559 	  MIPS64 architecture.  Many modern embedded systems with a 64-bit
1560 	  MIPS processor are based on a MIPS64 processor.  If you know the
1561 	  specific type of processor in your system, choose those that one
1562 	  otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1563 
1564 config CPU_MIPS64_R6
1565 	bool "MIPS64 Release 6"
1566 	depends on SYS_HAS_CPU_MIPS64_R6
1567 	select CPU_HAS_PREFETCH
1568 	select CPU_SUPPORTS_32BIT_KERNEL
1569 	select CPU_SUPPORTS_64BIT_KERNEL
1570 	select CPU_SUPPORTS_HIGHMEM
1571 	select CPU_SUPPORTS_HUGEPAGES
1572 	select CPU_SUPPORTS_MSA
1573 	select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1574 	select HAVE_KVM
1575 	help
1576 	  Choose this option to build a kernel for release 6 or later of the
1577 	  MIPS64 architecture.  New MIPS processors, starting with the Warrior
1578 	  family, are based on a MIPS64r6 processor. If you own an older
1579 	  processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1580 
1581 config CPU_R3000
1582 	bool "R3000"
1583 	depends on SYS_HAS_CPU_R3000
1584 	select CPU_HAS_WB
1585 	select CPU_HAS_LOAD_STORE_LR
1586 	select CPU_R3K_TLB
1587 	select CPU_SUPPORTS_32BIT_KERNEL
1588 	select CPU_SUPPORTS_HIGHMEM
1589 	help
1590 	  Please make sure to pick the right CPU type. Linux/MIPS is not
1591 	  designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1592 	  *not* work on R4000 machines and vice versa.  However, since most
1593 	  of the supported machines have an R4000 (or similar) CPU, R4x00
1594 	  might be a safe bet.  If the resulting kernel does not work,
1595 	  try to recompile with R3000.
1596 
1597 config CPU_TX39XX
1598 	bool "R39XX"
1599 	depends on SYS_HAS_CPU_TX39XX
1600 	select CPU_SUPPORTS_32BIT_KERNEL
1601 	select CPU_HAS_LOAD_STORE_LR
1602 	select CPU_R3K_TLB
1603 
1604 config CPU_VR41XX
1605 	bool "R41xx"
1606 	depends on SYS_HAS_CPU_VR41XX
1607 	select CPU_SUPPORTS_32BIT_KERNEL
1608 	select CPU_SUPPORTS_64BIT_KERNEL
1609 	select CPU_HAS_LOAD_STORE_LR
1610 	help
1611 	  The options selects support for the NEC VR4100 series of processors.
1612 	  Only choose this option if you have one of these processors as a
1613 	  kernel built with this option will not run on any other type of
1614 	  processor or vice versa.
1615 
1616 config CPU_R4X00
1617 	bool "R4x00"
1618 	depends on SYS_HAS_CPU_R4X00
1619 	select CPU_SUPPORTS_32BIT_KERNEL
1620 	select CPU_SUPPORTS_64BIT_KERNEL
1621 	select CPU_SUPPORTS_HUGEPAGES
1622 	select CPU_HAS_LOAD_STORE_LR
1623 	help
1624 	  MIPS Technologies R4000-series processors other than 4300, including
1625 	  the R4000, R4400, R4600, and 4700.
1626 
1627 config CPU_TX49XX
1628 	bool "R49XX"
1629 	depends on SYS_HAS_CPU_TX49XX
1630 	select CPU_HAS_PREFETCH
1631 	select CPU_HAS_LOAD_STORE_LR
1632 	select CPU_SUPPORTS_32BIT_KERNEL
1633 	select CPU_SUPPORTS_64BIT_KERNEL
1634 	select CPU_SUPPORTS_HUGEPAGES
1635 
1636 config CPU_R5000
1637 	bool "R5000"
1638 	depends on SYS_HAS_CPU_R5000
1639 	select CPU_SUPPORTS_32BIT_KERNEL
1640 	select CPU_SUPPORTS_64BIT_KERNEL
1641 	select CPU_SUPPORTS_HUGEPAGES
1642 	select CPU_HAS_LOAD_STORE_LR
1643 	help
1644 	  MIPS Technologies R5000-series processors other than the Nevada.
1645 
1646 config CPU_R5500
1647 	bool "R5500"
1648 	depends on SYS_HAS_CPU_R5500
1649 	select CPU_SUPPORTS_32BIT_KERNEL
1650 	select CPU_SUPPORTS_64BIT_KERNEL
1651 	select CPU_SUPPORTS_HUGEPAGES
1652 	select CPU_HAS_LOAD_STORE_LR
1653 	help
1654 	  NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1655 	  instruction set.
1656 
1657 config CPU_NEVADA
1658 	bool "RM52xx"
1659 	depends on SYS_HAS_CPU_NEVADA
1660 	select CPU_SUPPORTS_32BIT_KERNEL
1661 	select CPU_SUPPORTS_64BIT_KERNEL
1662 	select CPU_SUPPORTS_HUGEPAGES
1663 	select CPU_HAS_LOAD_STORE_LR
1664 	help
1665 	  QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1666 
1667 config CPU_R10000
1668 	bool "R10000"
1669 	depends on SYS_HAS_CPU_R10000
1670 	select CPU_HAS_PREFETCH
1671 	select CPU_HAS_LOAD_STORE_LR
1672 	select CPU_SUPPORTS_32BIT_KERNEL
1673 	select CPU_SUPPORTS_64BIT_KERNEL
1674 	select CPU_SUPPORTS_HIGHMEM
1675 	select CPU_SUPPORTS_HUGEPAGES
1676 	help
1677 	  MIPS Technologies R10000-series processors.
1678 
1679 config CPU_RM7000
1680 	bool "RM7000"
1681 	depends on SYS_HAS_CPU_RM7000
1682 	select CPU_HAS_PREFETCH
1683 	select CPU_HAS_LOAD_STORE_LR
1684 	select CPU_SUPPORTS_32BIT_KERNEL
1685 	select CPU_SUPPORTS_64BIT_KERNEL
1686 	select CPU_SUPPORTS_HIGHMEM
1687 	select CPU_SUPPORTS_HUGEPAGES
1688 
1689 config CPU_SB1
1690 	bool "SB1"
1691 	depends on SYS_HAS_CPU_SB1
1692 	select CPU_HAS_LOAD_STORE_LR
1693 	select CPU_SUPPORTS_32BIT_KERNEL
1694 	select CPU_SUPPORTS_64BIT_KERNEL
1695 	select CPU_SUPPORTS_HIGHMEM
1696 	select CPU_SUPPORTS_HUGEPAGES
1697 	select WEAK_ORDERING
1698 
1699 config CPU_CAVIUM_OCTEON
1700 	bool "Cavium Octeon processor"
1701 	depends on SYS_HAS_CPU_CAVIUM_OCTEON
1702 	select CPU_HAS_PREFETCH
1703 	select CPU_HAS_LOAD_STORE_LR
1704 	select CPU_SUPPORTS_64BIT_KERNEL
1705 	select WEAK_ORDERING
1706 	select CPU_SUPPORTS_HIGHMEM
1707 	select CPU_SUPPORTS_HUGEPAGES
1708 	select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1709 	select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1710 	select MIPS_L1_CACHE_SHIFT_7
1711 	select HAVE_KVM
1712 	help
1713 	  The Cavium Octeon processor is a highly integrated chip containing
1714 	  many ethernet hardware widgets for networking tasks. The processor
1715 	  can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1716 	  Full details can be found at http://www.caviumnetworks.com.
1717 
1718 config CPU_BMIPS
1719 	bool "Broadcom BMIPS"
1720 	depends on SYS_HAS_CPU_BMIPS
1721 	select CPU_MIPS32
1722 	select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1723 	select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1724 	select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1725 	select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1726 	select CPU_SUPPORTS_32BIT_KERNEL
1727 	select DMA_NONCOHERENT
1728 	select IRQ_MIPS_CPU
1729 	select SWAP_IO_SPACE
1730 	select WEAK_ORDERING
1731 	select CPU_SUPPORTS_HIGHMEM
1732 	select CPU_HAS_PREFETCH
1733 	select CPU_HAS_LOAD_STORE_LR
1734 	select CPU_SUPPORTS_CPUFREQ
1735 	select MIPS_EXTERNAL_TIMER
1736 	help
1737 	  Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1738 
1739 config CPU_XLR
1740 	bool "Netlogic XLR SoC"
1741 	depends on SYS_HAS_CPU_XLR
1742 	select CPU_HAS_LOAD_STORE_LR
1743 	select CPU_SUPPORTS_32BIT_KERNEL
1744 	select CPU_SUPPORTS_64BIT_KERNEL
1745 	select CPU_SUPPORTS_HIGHMEM
1746 	select CPU_SUPPORTS_HUGEPAGES
1747 	select WEAK_ORDERING
1748 	select WEAK_REORDERING_BEYOND_LLSC
1749 	help
1750 	  Netlogic Microsystems XLR/XLS processors.
1751 
1752 config CPU_XLP
1753 	bool "Netlogic XLP SoC"
1754 	depends on SYS_HAS_CPU_XLP
1755 	select CPU_SUPPORTS_32BIT_KERNEL
1756 	select CPU_SUPPORTS_64BIT_KERNEL
1757 	select CPU_SUPPORTS_HIGHMEM
1758 	select WEAK_ORDERING
1759 	select WEAK_REORDERING_BEYOND_LLSC
1760 	select CPU_HAS_PREFETCH
1761 	select CPU_HAS_LOAD_STORE_LR
1762 	select CPU_MIPSR2
1763 	select CPU_SUPPORTS_HUGEPAGES
1764 	select MIPS_ASID_BITS_VARIABLE
1765 	help
1766 	  Netlogic Microsystems XLP processors.
1767 endchoice
1768 
1769 config CPU_MIPS32_3_5_FEATURES
1770 	bool "MIPS32 Release 3.5 Features"
1771 	depends on SYS_HAS_CPU_MIPS32_R3_5
1772 	depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1773 	help
1774 	  Choose this option to build a kernel for release 2 or later of the
1775 	  MIPS32 architecture including features from the 3.5 release such as
1776 	  support for Enhanced Virtual Addressing (EVA).
1777 
1778 config CPU_MIPS32_3_5_EVA
1779 	bool "Enhanced Virtual Addressing (EVA)"
1780 	depends on CPU_MIPS32_3_5_FEATURES
1781 	select EVA
1782 	default y
1783 	help
1784 	  Choose this option if you want to enable the Enhanced Virtual
1785 	  Addressing (EVA) on your MIPS32 core (such as proAptiv).
1786 	  One of its primary benefits is an increase in the maximum size
1787 	  of lowmem (up to 3GB). If unsure, say 'N' here.
1788 
1789 config CPU_MIPS32_R5_FEATURES
1790 	bool "MIPS32 Release 5 Features"
1791 	depends on SYS_HAS_CPU_MIPS32_R5
1792 	depends on CPU_MIPS32_R2
1793 	help
1794 	  Choose this option to build a kernel for release 2 or later of the
1795 	  MIPS32 architecture including features from release 5 such as
1796 	  support for Extended Physical Addressing (XPA).
1797 
1798 config CPU_MIPS32_R5_XPA
1799 	bool "Extended Physical Addressing (XPA)"
1800 	depends on CPU_MIPS32_R5_FEATURES
1801 	depends on !EVA
1802 	depends on !PAGE_SIZE_4KB
1803 	depends on SYS_SUPPORTS_HIGHMEM
1804 	select XPA
1805 	select HIGHMEM
1806 	select PHYS_ADDR_T_64BIT
1807 	default n
1808 	help
1809 	  Choose this option if you want to enable the Extended Physical
1810 	  Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1811 	  benefit is to increase physical addressing equal to or greater
1812 	  than 40 bits. Note that this has the side effect of turning on
1813 	  64-bit addressing which in turn makes the PTEs 64-bit in size.
1814 	  If unsure, say 'N' here.
1815 
1816 if CPU_LOONGSON2F
1817 config CPU_NOP_WORKAROUNDS
1818 	bool
1819 
1820 config CPU_JUMP_WORKAROUNDS
1821 	bool
1822 
1823 config CPU_LOONGSON2F_WORKAROUNDS
1824 	bool "Loongson 2F Workarounds"
1825 	default y
1826 	select CPU_NOP_WORKAROUNDS
1827 	select CPU_JUMP_WORKAROUNDS
1828 	help
1829 	  Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1830 	  require workarounds.  Without workarounds the system may hang
1831 	  unexpectedly.  For more information please refer to the gas
1832 	  -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1833 
1834 	  Loongson 2F03 and later have fixed these issues and no workarounds
1835 	  are needed.  The workarounds have no significant side effect on them
1836 	  but may decrease the performance of the system so this option should
1837 	  be disabled unless the kernel is intended to be run on 2F01 or 2F02
1838 	  systems.
1839 
1840 	  If unsure, please say Y.
1841 endif # CPU_LOONGSON2F
1842 
1843 config SYS_SUPPORTS_ZBOOT
1844 	bool
1845 	select HAVE_KERNEL_GZIP
1846 	select HAVE_KERNEL_BZIP2
1847 	select HAVE_KERNEL_LZ4
1848 	select HAVE_KERNEL_LZMA
1849 	select HAVE_KERNEL_LZO
1850 	select HAVE_KERNEL_XZ
1851 
1852 config SYS_SUPPORTS_ZBOOT_UART16550
1853 	bool
1854 	select SYS_SUPPORTS_ZBOOT
1855 
1856 config SYS_SUPPORTS_ZBOOT_UART_PROM
1857 	bool
1858 	select SYS_SUPPORTS_ZBOOT
1859 
1860 config CPU_LOONGSON2
1861 	bool
1862 	select CPU_SUPPORTS_32BIT_KERNEL
1863 	select CPU_SUPPORTS_64BIT_KERNEL
1864 	select CPU_SUPPORTS_HIGHMEM
1865 	select CPU_SUPPORTS_HUGEPAGES
1866 	select ARCH_HAS_PHYS_TO_DMA
1867 	select CPU_HAS_LOAD_STORE_LR
1868 
1869 config CPU_LOONGSON1
1870 	bool
1871 	select CPU_MIPS32
1872 	select CPU_MIPSR2
1873 	select CPU_HAS_PREFETCH
1874 	select CPU_HAS_LOAD_STORE_LR
1875 	select CPU_SUPPORTS_32BIT_KERNEL
1876 	select CPU_SUPPORTS_HIGHMEM
1877 	select CPU_SUPPORTS_CPUFREQ
1878 
1879 config CPU_BMIPS32_3300
1880 	select SMP_UP if SMP
1881 	bool
1882 
1883 config CPU_BMIPS4350
1884 	bool
1885 	select SYS_SUPPORTS_SMP
1886 	select SYS_SUPPORTS_HOTPLUG_CPU
1887 
1888 config CPU_BMIPS4380
1889 	bool
1890 	select MIPS_L1_CACHE_SHIFT_6
1891 	select SYS_SUPPORTS_SMP
1892 	select SYS_SUPPORTS_HOTPLUG_CPU
1893 	select CPU_HAS_RIXI
1894 
1895 config CPU_BMIPS5000
1896 	bool
1897 	select MIPS_CPU_SCACHE
1898 	select MIPS_L1_CACHE_SHIFT_7
1899 	select SYS_SUPPORTS_SMP
1900 	select SYS_SUPPORTS_HOTPLUG_CPU
1901 	select CPU_HAS_RIXI
1902 
1903 config SYS_HAS_CPU_LOONGSON3
1904 	bool
1905 	select CPU_SUPPORTS_CPUFREQ
1906 	select CPU_HAS_RIXI
1907 
1908 config SYS_HAS_CPU_LOONGSON2E
1909 	bool
1910 
1911 config SYS_HAS_CPU_LOONGSON2F
1912 	bool
1913 	select CPU_SUPPORTS_CPUFREQ
1914 	select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1915 	select CPU_SUPPORTS_UNCACHED_ACCELERATED
1916 
1917 config SYS_HAS_CPU_LOONGSON1B
1918 	bool
1919 
1920 config SYS_HAS_CPU_LOONGSON1C
1921 	bool
1922 
1923 config SYS_HAS_CPU_MIPS32_R1
1924 	bool
1925 
1926 config SYS_HAS_CPU_MIPS32_R2
1927 	bool
1928 
1929 config SYS_HAS_CPU_MIPS32_R3_5
1930 	bool
1931 
1932 config SYS_HAS_CPU_MIPS32_R5
1933 	bool
1934 	select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1935 
1936 config SYS_HAS_CPU_MIPS32_R6
1937 	bool
1938 	select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1939 
1940 config SYS_HAS_CPU_MIPS64_R1
1941 	bool
1942 
1943 config SYS_HAS_CPU_MIPS64_R2
1944 	bool
1945 
1946 config SYS_HAS_CPU_MIPS64_R6
1947 	bool
1948 	select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1949 
1950 config SYS_HAS_CPU_R3000
1951 	bool
1952 
1953 config SYS_HAS_CPU_TX39XX
1954 	bool
1955 
1956 config SYS_HAS_CPU_VR41XX
1957 	bool
1958 
1959 config SYS_HAS_CPU_R4X00
1960 	bool
1961 
1962 config SYS_HAS_CPU_TX49XX
1963 	bool
1964 
1965 config SYS_HAS_CPU_R5000
1966 	bool
1967 
1968 config SYS_HAS_CPU_R5500
1969 	bool
1970 
1971 config SYS_HAS_CPU_NEVADA
1972 	bool
1973 
1974 config SYS_HAS_CPU_R10000
1975 	bool
1976 	select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1977 
1978 config SYS_HAS_CPU_RM7000
1979 	bool
1980 
1981 config SYS_HAS_CPU_SB1
1982 	bool
1983 
1984 config SYS_HAS_CPU_CAVIUM_OCTEON
1985 	bool
1986 
1987 config SYS_HAS_CPU_BMIPS
1988 	bool
1989 
1990 config SYS_HAS_CPU_BMIPS32_3300
1991 	bool
1992 	select SYS_HAS_CPU_BMIPS
1993 
1994 config SYS_HAS_CPU_BMIPS4350
1995 	bool
1996 	select SYS_HAS_CPU_BMIPS
1997 
1998 config SYS_HAS_CPU_BMIPS4380
1999 	bool
2000 	select SYS_HAS_CPU_BMIPS
2001 
2002 config SYS_HAS_CPU_BMIPS5000
2003 	bool
2004 	select SYS_HAS_CPU_BMIPS
2005 	select ARCH_HAS_SYNC_DMA_FOR_CPU
2006 
2007 config SYS_HAS_CPU_XLR
2008 	bool
2009 
2010 config SYS_HAS_CPU_XLP
2011 	bool
2012 
2013 #
2014 # CPU may reorder R->R, R->W, W->R, W->W
2015 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2016 #
2017 config WEAK_ORDERING
2018 	bool
2019 
2020 #
2021 # CPU may reorder reads and writes beyond LL/SC
2022 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2023 #
2024 config WEAK_REORDERING_BEYOND_LLSC
2025 	bool
2026 endmenu
2027 
2028 #
2029 # These two indicate any level of the MIPS32 and MIPS64 architecture
2030 #
2031 config CPU_MIPS32
2032 	bool
2033 	default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2034 
2035 config CPU_MIPS64
2036 	bool
2037 	default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2038 
2039 #
2040 # These indicate the revision of the architecture
2041 #
2042 config CPU_MIPSR1
2043 	bool
2044 	default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2045 
2046 config CPU_MIPSR2
2047 	bool
2048 	default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2049 	select CPU_HAS_RIXI
2050 	select MIPS_SPRAM
2051 
2052 config CPU_MIPSR6
2053 	bool
2054 	default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2055 	select CPU_HAS_RIXI
2056 	select HAVE_ARCH_BITREVERSE
2057 	select MIPS_ASID_BITS_VARIABLE
2058 	select MIPS_CRC_SUPPORT
2059 	select MIPS_SPRAM
2060 
2061 config TARGET_ISA_REV
2062 	int
2063 	default 1 if CPU_MIPSR1
2064 	default 2 if CPU_MIPSR2
2065 	default 6 if CPU_MIPSR6
2066 	default 0
2067 	help
2068 	  Reflects the ISA revision being targeted by the kernel build. This
2069 	  is effectively the Kconfig equivalent of MIPS_ISA_REV.
2070 
2071 config EVA
2072 	bool
2073 
2074 config XPA
2075 	bool
2076 
2077 config SYS_SUPPORTS_32BIT_KERNEL
2078 	bool
2079 config SYS_SUPPORTS_64BIT_KERNEL
2080 	bool
2081 config CPU_SUPPORTS_32BIT_KERNEL
2082 	bool
2083 config CPU_SUPPORTS_64BIT_KERNEL
2084 	bool
2085 config CPU_SUPPORTS_CPUFREQ
2086 	bool
2087 config CPU_SUPPORTS_ADDRWINCFG
2088 	bool
2089 config CPU_SUPPORTS_HUGEPAGES
2090 	bool
2091 	depends on !(32BIT && (ARCH_PHYS_ADDR_T_64BIT || EVA))
2092 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2093 	bool
2094 config MIPS_PGD_C0_CONTEXT
2095 	bool
2096 	default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2097 
2098 #
2099 # Set to y for ptrace access to watch registers.
2100 #
2101 config HARDWARE_WATCHPOINTS
2102 	bool
2103 	default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2104 
2105 menu "Kernel type"
2106 
2107 choice
2108 	prompt "Kernel code model"
2109 	help
2110 	  You should only select this option if you have a workload that
2111 	  actually benefits from 64-bit processing or if your machine has
2112 	  large memory.  You will only be presented a single option in this
2113 	  menu if your system does not support both 32-bit and 64-bit kernels.
2114 
2115 config 32BIT
2116 	bool "32-bit kernel"
2117 	depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2118 	select TRAD_SIGNALS
2119 	help
2120 	  Select this option if you want to build a 32-bit kernel.
2121 
2122 config 64BIT
2123 	bool "64-bit kernel"
2124 	depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2125 	help
2126 	  Select this option if you want to build a 64-bit kernel.
2127 
2128 endchoice
2129 
2130 config KVM_GUEST
2131 	bool "KVM Guest Kernel"
2132 	depends on BROKEN_ON_SMP
2133 	help
2134 	  Select this option if building a guest kernel for KVM (Trap & Emulate)
2135 	  mode.
2136 
2137 config KVM_GUEST_TIMER_FREQ
2138 	int "Count/Compare Timer Frequency (MHz)"
2139 	depends on KVM_GUEST
2140 	default 100
2141 	help
2142 	  Set this to non-zero if building a guest kernel for KVM to skip RTC
2143 	  emulation when determining guest CPU Frequency. Instead, the guest's
2144 	  timer frequency is specified directly.
2145 
2146 config MIPS_VA_BITS_48
2147 	bool "48 bits virtual memory"
2148 	depends on 64BIT
2149 	help
2150 	  Support a maximum at least 48 bits of application virtual
2151 	  memory.  Default is 40 bits or less, depending on the CPU.
2152 	  For page sizes 16k and above, this option results in a small
2153 	  memory overhead for page tables.  For 4k page size, a fourth
2154 	  level of page tables is added which imposes both a memory
2155 	  overhead as well as slower TLB fault handling.
2156 
2157 	  If unsure, say N.
2158 
2159 choice
2160 	prompt "Kernel page size"
2161 	default PAGE_SIZE_4KB
2162 
2163 config PAGE_SIZE_4KB
2164 	bool "4kB"
2165 	depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2166 	help
2167 	  This option select the standard 4kB Linux page size.  On some
2168 	  R3000-family processors this is the only available page size.  Using
2169 	  4kB page size will minimize memory consumption and is therefore
2170 	  recommended for low memory systems.
2171 
2172 config PAGE_SIZE_8KB
2173 	bool "8kB"
2174 	depends on CPU_CAVIUM_OCTEON
2175 	depends on !MIPS_VA_BITS_48
2176 	help
2177 	  Using 8kB page size will result in higher performance kernel at
2178 	  the price of higher memory consumption.  This option is available
2179 	  only on cnMIPS processors.  Note that you will need a suitable Linux
2180 	  distribution to support this.
2181 
2182 config PAGE_SIZE_16KB
2183 	bool "16kB"
2184 	depends on !CPU_R3000 && !CPU_TX39XX
2185 	help
2186 	  Using 16kB page size will result in higher performance kernel at
2187 	  the price of higher memory consumption.  This option is available on
2188 	  all non-R3000 family processors.  Note that you will need a suitable
2189 	  Linux distribution to support this.
2190 
2191 config PAGE_SIZE_32KB
2192 	bool "32kB"
2193 	depends on CPU_CAVIUM_OCTEON
2194 	depends on !MIPS_VA_BITS_48
2195 	help
2196 	  Using 32kB page size will result in higher performance kernel at
2197 	  the price of higher memory consumption.  This option is available
2198 	  only on cnMIPS cores.  Note that you will need a suitable Linux
2199 	  distribution to support this.
2200 
2201 config PAGE_SIZE_64KB
2202 	bool "64kB"
2203 	depends on !CPU_R3000 && !CPU_TX39XX
2204 	help
2205 	  Using 64kB page size will result in higher performance kernel at
2206 	  the price of higher memory consumption.  This option is available on
2207 	  all non-R3000 family processor.  Not that at the time of this
2208 	  writing this option is still high experimental.
2209 
2210 endchoice
2211 
2212 config FORCE_MAX_ZONEORDER
2213 	int "Maximum zone order"
2214 	range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2215 	default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2216 	range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2217 	default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2218 	range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2219 	default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2220 	range 11 64
2221 	default "11"
2222 	help
2223 	  The kernel memory allocator divides physically contiguous memory
2224 	  blocks into "zones", where each zone is a power of two number of
2225 	  pages.  This option selects the largest power of two that the kernel
2226 	  keeps in the memory allocator.  If you need to allocate very large
2227 	  blocks of physically contiguous memory, then you may need to
2228 	  increase this value.
2229 
2230 	  This config option is actually maximum order plus one. For example,
2231 	  a value of 11 means that the largest free memory block is 2^10 pages.
2232 
2233 	  The page size is not necessarily 4KB.  Keep this in mind
2234 	  when choosing a value for this option.
2235 
2236 config BOARD_SCACHE
2237 	bool
2238 
2239 config IP22_CPU_SCACHE
2240 	bool
2241 	select BOARD_SCACHE
2242 
2243 #
2244 # Support for a MIPS32 / MIPS64 style S-caches
2245 #
2246 config MIPS_CPU_SCACHE
2247 	bool
2248 	select BOARD_SCACHE
2249 
2250 config R5000_CPU_SCACHE
2251 	bool
2252 	select BOARD_SCACHE
2253 
2254 config RM7000_CPU_SCACHE
2255 	bool
2256 	select BOARD_SCACHE
2257 
2258 config SIBYTE_DMA_PAGEOPS
2259 	bool "Use DMA to clear/copy pages"
2260 	depends on CPU_SB1
2261 	help
2262 	  Instead of using the CPU to zero and copy pages, use a Data Mover
2263 	  channel.  These DMA channels are otherwise unused by the standard
2264 	  SiByte Linux port.  Seems to give a small performance benefit.
2265 
2266 config CPU_HAS_PREFETCH
2267 	bool
2268 
2269 config CPU_GENERIC_DUMP_TLB
2270 	bool
2271 	default y if !(CPU_R3000 || CPU_TX39XX)
2272 
2273 config MIPS_FP_SUPPORT
2274 	bool "Floating Point support" if EXPERT
2275 	default y
2276 	help
2277 	  Select y to include support for floating point in the kernel
2278 	  including initialization of FPU hardware, FP context save & restore
2279 	  and emulation of an FPU where necessary. Without this support any
2280 	  userland program attempting to use floating point instructions will
2281 	  receive a SIGILL.
2282 
2283 	  If you know that your userland will not attempt to use floating point
2284 	  instructions then you can say n here to shrink the kernel a little.
2285 
2286 	  If unsure, say y.
2287 
2288 config CPU_R2300_FPU
2289 	bool
2290 	depends on MIPS_FP_SUPPORT
2291 	default y if CPU_R3000 || CPU_TX39XX
2292 
2293 config CPU_R3K_TLB
2294 	bool
2295 
2296 config CPU_R4K_FPU
2297 	bool
2298 	depends on MIPS_FP_SUPPORT
2299 	default y if !CPU_R2300_FPU
2300 
2301 config CPU_R4K_CACHE_TLB
2302 	bool
2303 	default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON)
2304 
2305 config MIPS_MT_SMP
2306 	bool "MIPS MT SMP support (1 TC on each available VPE)"
2307 	default y
2308 	depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2309 	select CPU_MIPSR2_IRQ_VI
2310 	select CPU_MIPSR2_IRQ_EI
2311 	select SYNC_R4K
2312 	select MIPS_MT
2313 	select SMP
2314 	select SMP_UP
2315 	select SYS_SUPPORTS_SMP
2316 	select SYS_SUPPORTS_SCHED_SMT
2317 	select MIPS_PERF_SHARED_TC_COUNTERS
2318 	help
2319 	  This is a kernel model which is known as SMVP. This is supported
2320 	  on cores with the MT ASE and uses the available VPEs to implement
2321 	  virtual processors which supports SMP. This is equivalent to the
2322 	  Intel Hyperthreading feature. For further information go to
2323 	  <http://www.imgtec.com/mips/mips-multithreading.asp>.
2324 
2325 config MIPS_MT
2326 	bool
2327 
2328 config SCHED_SMT
2329 	bool "SMT (multithreading) scheduler support"
2330 	depends on SYS_SUPPORTS_SCHED_SMT
2331 	default n
2332 	help
2333 	  SMT scheduler support improves the CPU scheduler's decision making
2334 	  when dealing with MIPS MT enabled cores at a cost of slightly
2335 	  increased overhead in some places. If unsure say N here.
2336 
2337 config SYS_SUPPORTS_SCHED_SMT
2338 	bool
2339 
2340 config SYS_SUPPORTS_MULTITHREADING
2341 	bool
2342 
2343 config MIPS_MT_FPAFF
2344 	bool "Dynamic FPU affinity for FP-intensive threads"
2345 	default y
2346 	depends on MIPS_MT_SMP
2347 
2348 config MIPSR2_TO_R6_EMULATOR
2349 	bool "MIPS R2-to-R6 emulator"
2350 	depends on CPU_MIPSR6
2351 	depends on MIPS_FP_SUPPORT
2352 	default y
2353 	help
2354 	  Choose this option if you want to run non-R6 MIPS userland code.
2355 	  Even if you say 'Y' here, the emulator will still be disabled by
2356 	  default. You can enable it using the 'mipsr2emu' kernel option.
2357 	  The only reason this is a build-time option is to save ~14K from the
2358 	  final kernel image.
2359 
2360 config SYS_SUPPORTS_VPE_LOADER
2361 	bool
2362 	depends on SYS_SUPPORTS_MULTITHREADING
2363 	help
2364 	  Indicates that the platform supports the VPE loader, and provides
2365 	  physical_memsize.
2366 
2367 config MIPS_VPE_LOADER
2368 	bool "VPE loader support."
2369 	depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2370 	select CPU_MIPSR2_IRQ_VI
2371 	select CPU_MIPSR2_IRQ_EI
2372 	select MIPS_MT
2373 	help
2374 	  Includes a loader for loading an elf relocatable object
2375 	  onto another VPE and running it.
2376 
2377 config MIPS_VPE_LOADER_CMP
2378 	bool
2379 	default "y"
2380 	depends on MIPS_VPE_LOADER && MIPS_CMP
2381 
2382 config MIPS_VPE_LOADER_MT
2383 	bool
2384 	default "y"
2385 	depends on MIPS_VPE_LOADER && !MIPS_CMP
2386 
2387 config MIPS_VPE_LOADER_TOM
2388 	bool "Load VPE program into memory hidden from linux"
2389 	depends on MIPS_VPE_LOADER
2390 	default y
2391 	help
2392 	  The loader can use memory that is present but has been hidden from
2393 	  Linux using the kernel command line option "mem=xxMB". It's up to
2394 	  you to ensure the amount you put in the option and the space your
2395 	  program requires is less or equal to the amount physically present.
2396 
2397 config MIPS_VPE_APSP_API
2398 	bool "Enable support for AP/SP API (RTLX)"
2399 	depends on MIPS_VPE_LOADER
2400 
2401 config MIPS_VPE_APSP_API_CMP
2402 	bool
2403 	default "y"
2404 	depends on MIPS_VPE_APSP_API && MIPS_CMP
2405 
2406 config MIPS_VPE_APSP_API_MT
2407 	bool
2408 	default "y"
2409 	depends on MIPS_VPE_APSP_API && !MIPS_CMP
2410 
2411 config MIPS_CMP
2412 	bool "MIPS CMP framework support (DEPRECATED)"
2413 	depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2414 	select SMP
2415 	select SYNC_R4K
2416 	select SYS_SUPPORTS_SMP
2417 	select WEAK_ORDERING
2418 	default n
2419 	help
2420 	  Select this if you are using a bootloader which implements the "CMP
2421 	  framework" protocol (ie. YAMON) and want your kernel to make use of
2422 	  its ability to start secondary CPUs.
2423 
2424 	  Unless you have a specific need, you should use CONFIG_MIPS_CPS
2425 	  instead of this.
2426 
2427 config MIPS_CPS
2428 	bool "MIPS Coherent Processing System support"
2429 	depends on SYS_SUPPORTS_MIPS_CPS
2430 	select MIPS_CM
2431 	select MIPS_CPS_PM if HOTPLUG_CPU
2432 	select SMP
2433 	select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2434 	select SYS_SUPPORTS_HOTPLUG_CPU
2435 	select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2436 	select SYS_SUPPORTS_SMP
2437 	select WEAK_ORDERING
2438 	help
2439 	  Select this if you wish to run an SMP kernel across multiple cores
2440 	  within a MIPS Coherent Processing System. When this option is
2441 	  enabled the kernel will probe for other cores and boot them with
2442 	  no external assistance. It is safe to enable this when hardware
2443 	  support is unavailable.
2444 
2445 config MIPS_CPS_PM
2446 	depends on MIPS_CPS
2447 	bool
2448 
2449 config MIPS_CM
2450 	bool
2451 	select MIPS_CPC
2452 
2453 config MIPS_CPC
2454 	bool
2455 
2456 config SB1_PASS_2_WORKAROUNDS
2457 	bool
2458 	depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2459 	default y
2460 
2461 config SB1_PASS_2_1_WORKAROUNDS
2462 	bool
2463 	depends on CPU_SB1 && CPU_SB1_PASS_2
2464 	default y
2465 
2466 choice
2467 	prompt "SmartMIPS or microMIPS ASE support"
2468 
2469 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2470 	bool "None"
2471 	help
2472 	  Select this if you want neither microMIPS nor SmartMIPS support
2473 
2474 config CPU_HAS_SMARTMIPS
2475 	depends on SYS_SUPPORTS_SMARTMIPS
2476 	bool "SmartMIPS"
2477 	help
2478 	  SmartMIPS is a extension of the MIPS32 architecture aimed at
2479 	  increased security at both hardware and software level for
2480 	  smartcards.  Enabling this option will allow proper use of the
2481 	  SmartMIPS instructions by Linux applications.  However a kernel with
2482 	  this option will not work on a MIPS core without SmartMIPS core.  If
2483 	  you don't know you probably don't have SmartMIPS and should say N
2484 	  here.
2485 
2486 config CPU_MICROMIPS
2487 	depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2488 	bool "microMIPS"
2489 	help
2490 	  When this option is enabled the kernel will be built using the
2491 	  microMIPS ISA
2492 
2493 endchoice
2494 
2495 config CPU_HAS_MSA
2496 	bool "Support for the MIPS SIMD Architecture"
2497 	depends on CPU_SUPPORTS_MSA
2498 	depends on MIPS_FP_SUPPORT
2499 	depends on 64BIT || MIPS_O32_FP64_SUPPORT
2500 	help
2501 	  MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2502 	  and a set of SIMD instructions to operate on them. When this option
2503 	  is enabled the kernel will support allocating & switching MSA
2504 	  vector register contexts. If you know that your kernel will only be
2505 	  running on CPUs which do not support MSA or that your userland will
2506 	  not be making use of it then you may wish to say N here to reduce
2507 	  the size & complexity of your kernel.
2508 
2509 	  If unsure, say Y.
2510 
2511 config CPU_HAS_WB
2512 	bool
2513 
2514 config XKS01
2515 	bool
2516 
2517 config CPU_HAS_RIXI
2518 	bool
2519 
2520 config CPU_HAS_LOAD_STORE_LR
2521 	bool
2522 	help
2523 	  CPU has support for unaligned load and store instructions:
2524 	  LWL, LWR, SWL, SWR (Load/store word left/right).
2525 	  LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit systems).
2526 
2527 #
2528 # Vectored interrupt mode is an R2 feature
2529 #
2530 config CPU_MIPSR2_IRQ_VI
2531 	bool
2532 
2533 #
2534 # Extended interrupt mode is an R2 feature
2535 #
2536 config CPU_MIPSR2_IRQ_EI
2537 	bool
2538 
2539 config CPU_HAS_SYNC
2540 	bool
2541 	depends on !CPU_R3000
2542 	default y
2543 
2544 #
2545 # CPU non-features
2546 #
2547 config CPU_DADDI_WORKAROUNDS
2548 	bool
2549 
2550 config CPU_R4000_WORKAROUNDS
2551 	bool
2552 	select CPU_R4400_WORKAROUNDS
2553 
2554 config CPU_R4400_WORKAROUNDS
2555 	bool
2556 
2557 config MIPS_ASID_SHIFT
2558 	int
2559 	default 6 if CPU_R3000 || CPU_TX39XX
2560 	default 0
2561 
2562 config MIPS_ASID_BITS
2563 	int
2564 	default 0 if MIPS_ASID_BITS_VARIABLE
2565 	default 6 if CPU_R3000 || CPU_TX39XX
2566 	default 8
2567 
2568 config MIPS_ASID_BITS_VARIABLE
2569 	bool
2570 
2571 config MIPS_CRC_SUPPORT
2572 	bool
2573 
2574 #
2575 # - Highmem only makes sense for the 32-bit kernel.
2576 # - The current highmem code will only work properly on physically indexed
2577 #   caches such as R3000, SB1, R7000 or those that look like they're virtually
2578 #   indexed such as R4000/R4400 SC and MC versions or R10000.  So for the
2579 #   moment we protect the user and offer the highmem option only on machines
2580 #   where it's known to be safe.  This will not offer highmem on a few systems
2581 #   such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2582 #   indexed CPUs but we're playing safe.
2583 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2584 #   know they might have memory configurations that could make use of highmem
2585 #   support.
2586 #
2587 config HIGHMEM
2588 	bool "High Memory Support"
2589 	depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2590 
2591 config CPU_SUPPORTS_HIGHMEM
2592 	bool
2593 
2594 config SYS_SUPPORTS_HIGHMEM
2595 	bool
2596 
2597 config SYS_SUPPORTS_SMARTMIPS
2598 	bool
2599 
2600 config SYS_SUPPORTS_MICROMIPS
2601 	bool
2602 
2603 config SYS_SUPPORTS_MIPS16
2604 	bool
2605 	help
2606 	  This option must be set if a kernel might be executed on a MIPS16-
2607 	  enabled CPU even if MIPS16 is not actually being used.  In other
2608 	  words, it makes the kernel MIPS16-tolerant.
2609 
2610 config CPU_SUPPORTS_MSA
2611 	bool
2612 
2613 config ARCH_FLATMEM_ENABLE
2614 	def_bool y
2615 	depends on !NUMA && !CPU_LOONGSON2
2616 
2617 config ARCH_DISCONTIGMEM_ENABLE
2618 	bool
2619 	default y if SGI_IP27
2620 	help
2621 	  Say Y to support efficient handling of discontiguous physical memory,
2622 	  for architectures which are either NUMA (Non-Uniform Memory Access)
2623 	  or have huge holes in the physical address space for other reasons.
2624 	  See <file:Documentation/vm/numa.rst> for more.
2625 
2626 config ARCH_SPARSEMEM_ENABLE
2627 	bool
2628 	select SPARSEMEM_STATIC
2629 
2630 config NUMA
2631 	bool "NUMA Support"
2632 	depends on SYS_SUPPORTS_NUMA
2633 	help
2634 	  Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2635 	  Access).  This option improves performance on systems with more
2636 	  than two nodes; on two node systems it is generally better to
2637 	  leave it disabled; on single node systems disable this option
2638 	  disabled.
2639 
2640 config SYS_SUPPORTS_NUMA
2641 	bool
2642 
2643 config RELOCATABLE
2644 	bool "Relocatable kernel"
2645 	depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2646 	help
2647 	  This builds a kernel image that retains relocation information
2648 	  so it can be loaded someplace besides the default 1MB.
2649 	  The relocations make the kernel binary about 15% larger,
2650 	  but are discarded at runtime
2651 
2652 config RELOCATION_TABLE_SIZE
2653 	hex "Relocation table size"
2654 	depends on RELOCATABLE
2655 	range 0x0 0x01000000
2656 	default "0x00100000"
2657 	---help---
2658 	  A table of relocation data will be appended to the kernel binary
2659 	  and parsed at boot to fix up the relocated kernel.
2660 
2661 	  This option allows the amount of space reserved for the table to be
2662 	  adjusted, although the default of 1Mb should be ok in most cases.
2663 
2664 	  The build will fail and a valid size suggested if this is too small.
2665 
2666 	  If unsure, leave at the default value.
2667 
2668 config RANDOMIZE_BASE
2669 	bool "Randomize the address of the kernel image"
2670 	depends on RELOCATABLE
2671 	---help---
2672 	  Randomizes the physical and virtual address at which the
2673 	  kernel image is loaded, as a security feature that
2674 	  deters exploit attempts relying on knowledge of the location
2675 	  of kernel internals.
2676 
2677 	  Entropy is generated using any coprocessor 0 registers available.
2678 
2679 	  The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2680 
2681 	  If unsure, say N.
2682 
2683 config RANDOMIZE_BASE_MAX_OFFSET
2684 	hex "Maximum kASLR offset" if EXPERT
2685 	depends on RANDOMIZE_BASE
2686 	range 0x0 0x40000000 if EVA || 64BIT
2687 	range 0x0 0x08000000
2688 	default "0x01000000"
2689 	---help---
2690 	  When kASLR is active, this provides the maximum offset that will
2691 	  be applied to the kernel image. It should be set according to the
2692 	  amount of physical RAM available in the target system minus
2693 	  PHYSICAL_START and must be a power of 2.
2694 
2695 	  This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2696 	  EVA or 64-bit. The default is 16Mb.
2697 
2698 config NODES_SHIFT
2699 	int
2700 	default "6"
2701 	depends on NEED_MULTIPLE_NODES
2702 
2703 config HW_PERF_EVENTS
2704 	bool "Enable hardware performance counter support for perf events"
2705 	depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2706 	default y
2707 	help
2708 	  Enable hardware performance counter support for perf events. If
2709 	  disabled, perf events will use software events only.
2710 
2711 config SMP
2712 	bool "Multi-Processing support"
2713 	depends on SYS_SUPPORTS_SMP
2714 	help
2715 	  This enables support for systems with more than one CPU. If you have
2716 	  a system with only one CPU, say N. If you have a system with more
2717 	  than one CPU, say Y.
2718 
2719 	  If you say N here, the kernel will run on uni- and multiprocessor
2720 	  machines, but will use only one CPU of a multiprocessor machine. If
2721 	  you say Y here, the kernel will run on many, but not all,
2722 	  uniprocessor machines. On a uniprocessor machine, the kernel
2723 	  will run faster if you say N here.
2724 
2725 	  People using multiprocessor machines who say Y here should also say
2726 	  Y to "Enhanced Real Time Clock Support", below.
2727 
2728 	  See also the SMP-HOWTO available at
2729 	  <http://www.tldp.org/docs.html#howto>.
2730 
2731 	  If you don't know what to do here, say N.
2732 
2733 config HOTPLUG_CPU
2734 	bool "Support for hot-pluggable CPUs"
2735 	depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2736 	help
2737 	  Say Y here to allow turning CPUs off and on. CPUs can be
2738 	  controlled through /sys/devices/system/cpu.
2739 	  (Note: power management support will enable this option
2740 	    automatically on SMP systems. )
2741 	  Say N if you want to disable CPU hotplug.
2742 
2743 config SMP_UP
2744 	bool
2745 
2746 config SYS_SUPPORTS_MIPS_CMP
2747 	bool
2748 
2749 config SYS_SUPPORTS_MIPS_CPS
2750 	bool
2751 
2752 config SYS_SUPPORTS_SMP
2753 	bool
2754 
2755 config NR_CPUS_DEFAULT_4
2756 	bool
2757 
2758 config NR_CPUS_DEFAULT_8
2759 	bool
2760 
2761 config NR_CPUS_DEFAULT_16
2762 	bool
2763 
2764 config NR_CPUS_DEFAULT_32
2765 	bool
2766 
2767 config NR_CPUS_DEFAULT_64
2768 	bool
2769 
2770 config NR_CPUS
2771 	int "Maximum number of CPUs (2-256)"
2772 	range 2 256
2773 	depends on SMP
2774 	default "4" if NR_CPUS_DEFAULT_4
2775 	default "8" if NR_CPUS_DEFAULT_8
2776 	default "16" if NR_CPUS_DEFAULT_16
2777 	default "32" if NR_CPUS_DEFAULT_32
2778 	default "64" if NR_CPUS_DEFAULT_64
2779 	help
2780 	  This allows you to specify the maximum number of CPUs which this
2781 	  kernel will support.  The maximum supported value is 32 for 32-bit
2782 	  kernel and 64 for 64-bit kernels; the minimum value which makes
2783 	  sense is 1 for Qemu (useful only for kernel debugging purposes)
2784 	  and 2 for all others.
2785 
2786 	  This is purely to save memory - each supported CPU adds
2787 	  approximately eight kilobytes to the kernel image.  For best
2788 	  performance should round up your number of processors to the next
2789 	  power of two.
2790 
2791 config MIPS_PERF_SHARED_TC_COUNTERS
2792 	bool
2793 
2794 config MIPS_NR_CPU_NR_MAP_1024
2795 	bool
2796 
2797 config MIPS_NR_CPU_NR_MAP
2798 	int
2799 	depends on SMP
2800 	default 1024 if MIPS_NR_CPU_NR_MAP_1024
2801 	default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2802 
2803 #
2804 # Timer Interrupt Frequency Configuration
2805 #
2806 
2807 choice
2808 	prompt "Timer frequency"
2809 	default HZ_250
2810 	help
2811 	  Allows the configuration of the timer frequency.
2812 
2813 	config HZ_24
2814 		bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2815 
2816 	config HZ_48
2817 		bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2818 
2819 	config HZ_100
2820 		bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2821 
2822 	config HZ_128
2823 		bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2824 
2825 	config HZ_250
2826 		bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2827 
2828 	config HZ_256
2829 		bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2830 
2831 	config HZ_1000
2832 		bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2833 
2834 	config HZ_1024
2835 		bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2836 
2837 endchoice
2838 
2839 config SYS_SUPPORTS_24HZ
2840 	bool
2841 
2842 config SYS_SUPPORTS_48HZ
2843 	bool
2844 
2845 config SYS_SUPPORTS_100HZ
2846 	bool
2847 
2848 config SYS_SUPPORTS_128HZ
2849 	bool
2850 
2851 config SYS_SUPPORTS_250HZ
2852 	bool
2853 
2854 config SYS_SUPPORTS_256HZ
2855 	bool
2856 
2857 config SYS_SUPPORTS_1000HZ
2858 	bool
2859 
2860 config SYS_SUPPORTS_1024HZ
2861 	bool
2862 
2863 config SYS_SUPPORTS_ARBIT_HZ
2864 	bool
2865 	default y if !SYS_SUPPORTS_24HZ && \
2866 		     !SYS_SUPPORTS_48HZ && \
2867 		     !SYS_SUPPORTS_100HZ && \
2868 		     !SYS_SUPPORTS_128HZ && \
2869 		     !SYS_SUPPORTS_250HZ && \
2870 		     !SYS_SUPPORTS_256HZ && \
2871 		     !SYS_SUPPORTS_1000HZ && \
2872 		     !SYS_SUPPORTS_1024HZ
2873 
2874 config HZ
2875 	int
2876 	default 24 if HZ_24
2877 	default 48 if HZ_48
2878 	default 100 if HZ_100
2879 	default 128 if HZ_128
2880 	default 250 if HZ_250
2881 	default 256 if HZ_256
2882 	default 1000 if HZ_1000
2883 	default 1024 if HZ_1024
2884 
2885 config SCHED_HRTICK
2886 	def_bool HIGH_RES_TIMERS
2887 
2888 config KEXEC
2889 	bool "Kexec system call"
2890 	select KEXEC_CORE
2891 	help
2892 	  kexec is a system call that implements the ability to shutdown your
2893 	  current kernel, and to start another kernel.  It is like a reboot
2894 	  but it is independent of the system firmware.   And like a reboot
2895 	  you can start any kernel with it, not just Linux.
2896 
2897 	  The name comes from the similarity to the exec system call.
2898 
2899 	  It is an ongoing process to be certain the hardware in a machine
2900 	  is properly shutdown, so do not be surprised if this code does not
2901 	  initially work for you.  As of this writing the exact hardware
2902 	  interface is strongly in flux, so no good recommendation can be
2903 	  made.
2904 
2905 config CRASH_DUMP
2906 	bool "Kernel crash dumps"
2907 	help
2908 	  Generate crash dump after being started by kexec.
2909 	  This should be normally only set in special crash dump kernels
2910 	  which are loaded in the main kernel with kexec-tools into
2911 	  a specially reserved region and then later executed after
2912 	  a crash by kdump/kexec. The crash dump kernel must be compiled
2913 	  to a memory address not used by the main kernel or firmware using
2914 	  PHYSICAL_START.
2915 
2916 config PHYSICAL_START
2917 	hex "Physical address where the kernel is loaded"
2918 	default "0xffffffff84000000"
2919 	depends on CRASH_DUMP
2920 	help
2921 	  This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2922 	  If you plan to use kernel for capturing the crash dump change
2923 	  this value to start of the reserved region (the "X" value as
2924 	  specified in the "crashkernel=YM@XM" command line boot parameter
2925 	  passed to the panic-ed kernel).
2926 
2927 config SECCOMP
2928 	bool "Enable seccomp to safely compute untrusted bytecode"
2929 	depends on PROC_FS
2930 	default y
2931 	help
2932 	  This kernel feature is useful for number crunching applications
2933 	  that may need to compute untrusted bytecode during their
2934 	  execution. By using pipes or other transports made available to
2935 	  the process as file descriptors supporting the read/write
2936 	  syscalls, it's possible to isolate those applications in
2937 	  their own address space using seccomp. Once seccomp is
2938 	  enabled via /proc/<pid>/seccomp, it cannot be disabled
2939 	  and the task is only allowed to execute a few safe syscalls
2940 	  defined by each seccomp mode.
2941 
2942 	  If unsure, say Y. Only embedded should say N here.
2943 
2944 config MIPS_O32_FP64_SUPPORT
2945 	bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
2946 	depends on 32BIT || MIPS32_O32
2947 	help
2948 	  When this is enabled, the kernel will support use of 64-bit floating
2949 	  point registers with binaries using the O32 ABI along with the
2950 	  EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2951 	  32-bit MIPS systems this support is at the cost of increasing the
2952 	  size and complexity of the compiled FPU emulator. Thus if you are
2953 	  running a MIPS32 system and know that none of your userland binaries
2954 	  will require 64-bit floating point, you may wish to reduce the size
2955 	  of your kernel & potentially improve FP emulation performance by
2956 	  saying N here.
2957 
2958 	  Although binutils currently supports use of this flag the details
2959 	  concerning its effect upon the O32 ABI in userland are still being
2960 	  worked on. In order to avoid userland becoming dependant upon current
2961 	  behaviour before the details have been finalised, this option should
2962 	  be considered experimental and only enabled by those working upon
2963 	  said details.
2964 
2965 	  If unsure, say N.
2966 
2967 config USE_OF
2968 	bool
2969 	select OF
2970 	select OF_EARLY_FLATTREE
2971 	select IRQ_DOMAIN
2972 
2973 config UHI_BOOT
2974 	bool
2975 
2976 config BUILTIN_DTB
2977 	bool
2978 
2979 choice
2980 	prompt "Kernel appended dtb support" if USE_OF
2981 	default MIPS_NO_APPENDED_DTB
2982 
2983 	config MIPS_NO_APPENDED_DTB
2984 		bool "None"
2985 		help
2986 		  Do not enable appended dtb support.
2987 
2988 	config MIPS_ELF_APPENDED_DTB
2989 		bool "vmlinux"
2990 		help
2991 		  With this option, the boot code will look for a device tree binary
2992 		  DTB) included in the vmlinux ELF section .appended_dtb. By default
2993 		  it is empty and the DTB can be appended using binutils command
2994 		  objcopy:
2995 
2996 		    objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2997 
2998 		  This is meant as a backward compatiblity convenience for those
2999 		  systems with a bootloader that can't be upgraded to accommodate
3000 		  the documented boot protocol using a device tree.
3001 
3002 	config MIPS_RAW_APPENDED_DTB
3003 		bool "vmlinux.bin or vmlinuz.bin"
3004 		help
3005 		  With this option, the boot code will look for a device tree binary
3006 		  DTB) appended to raw vmlinux.bin or vmlinuz.bin.
3007 		  (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
3008 
3009 		  This is meant as a backward compatibility convenience for those
3010 		  systems with a bootloader that can't be upgraded to accommodate
3011 		  the documented boot protocol using a device tree.
3012 
3013 		  Beware that there is very little in terms of protection against
3014 		  this option being confused by leftover garbage in memory that might
3015 		  look like a DTB header after a reboot if no actual DTB is appended
3016 		  to vmlinux.bin.  Do not leave this option active in a production kernel
3017 		  if you don't intend to always append a DTB.
3018 endchoice
3019 
3020 choice
3021 	prompt "Kernel command line type" if !CMDLINE_OVERRIDE
3022 	default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
3023 					 !MIPS_MALTA && \
3024 					 !CAVIUM_OCTEON_SOC
3025 	default MIPS_CMDLINE_FROM_BOOTLOADER
3026 
3027 	config MIPS_CMDLINE_FROM_DTB
3028 		depends on USE_OF
3029 		bool "Dtb kernel arguments if available"
3030 
3031 	config MIPS_CMDLINE_DTB_EXTEND
3032 		depends on USE_OF
3033 		bool "Extend dtb kernel arguments with bootloader arguments"
3034 
3035 	config MIPS_CMDLINE_FROM_BOOTLOADER
3036 		bool "Bootloader kernel arguments if available"
3037 
3038 	config MIPS_CMDLINE_BUILTIN_EXTEND
3039 		depends on CMDLINE_BOOL
3040 		bool "Extend builtin kernel arguments with bootloader arguments"
3041 endchoice
3042 
3043 endmenu
3044 
3045 config LOCKDEP_SUPPORT
3046 	bool
3047 	default y
3048 
3049 config STACKTRACE_SUPPORT
3050 	bool
3051 	default y
3052 
3053 config PGTABLE_LEVELS
3054 	int
3055 	default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3056 	default 3 if 64BIT && !PAGE_SIZE_64KB
3057 	default 2
3058 
3059 config MIPS_AUTO_PFN_OFFSET
3060 	bool
3061 
3062 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3063 
3064 config PCI_DRIVERS_GENERIC
3065 	select PCI_DOMAINS_GENERIC if PCI
3066 	bool
3067 
3068 config PCI_DRIVERS_LEGACY
3069 	def_bool !PCI_DRIVERS_GENERIC
3070 	select NO_GENERIC_PCI_IOPORT_MAP
3071 	select PCI_DOMAINS if PCI
3072 
3073 #
3074 # ISA support is now enabled via select.  Too many systems still have the one
3075 # or other ISA chip on the board that users don't know about so don't expect
3076 # users to choose the right thing ...
3077 #
3078 config ISA
3079 	bool
3080 
3081 config TC
3082 	bool "TURBOchannel support"
3083 	depends on MACH_DECSTATION
3084 	help
3085 	  TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3086 	  processors.  TURBOchannel programming specifications are available
3087 	  at:
3088 	  <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3089 	  and:
3090 	  <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3091 	  Linux driver support status is documented at:
3092 	  <http://www.linux-mips.org/wiki/DECstation>
3093 
3094 config MMU
3095 	bool
3096 	default y
3097 
3098 config ARCH_MMAP_RND_BITS_MIN
3099 	default 12 if 64BIT
3100 	default 8
3101 
3102 config ARCH_MMAP_RND_BITS_MAX
3103 	default 18 if 64BIT
3104 	default 15
3105 
3106 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3107 	default 8
3108 
3109 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3110 	default 15
3111 
3112 config I8253
3113 	bool
3114 	select CLKSRC_I8253
3115 	select CLKEVT_I8253
3116 	select MIPS_EXTERNAL_TIMER
3117 
3118 config ZONE_DMA
3119 	bool
3120 
3121 config ZONE_DMA32
3122 	bool
3123 
3124 endmenu
3125 
3126 config TRAD_SIGNALS
3127 	bool
3128 
3129 config MIPS32_COMPAT
3130 	bool
3131 
3132 config COMPAT
3133 	bool
3134 
3135 config SYSVIPC_COMPAT
3136 	bool
3137 
3138 config MIPS32_O32
3139 	bool "Kernel support for o32 binaries"
3140 	depends on 64BIT
3141 	select ARCH_WANT_OLD_COMPAT_IPC
3142 	select COMPAT
3143 	select MIPS32_COMPAT
3144 	select SYSVIPC_COMPAT if SYSVIPC
3145 	help
3146 	  Select this option if you want to run o32 binaries.  These are pure
3147 	  32-bit binaries as used by the 32-bit Linux/MIPS port.  Most of
3148 	  existing binaries are in this format.
3149 
3150 	  If unsure, say Y.
3151 
3152 config MIPS32_N32
3153 	bool "Kernel support for n32 binaries"
3154 	depends on 64BIT
3155 	select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3156 	select COMPAT
3157 	select MIPS32_COMPAT
3158 	select SYSVIPC_COMPAT if SYSVIPC
3159 	help
3160 	  Select this option if you want to run n32 binaries.  These are
3161 	  64-bit binaries using 32-bit quantities for addressing and certain
3162 	  data that would normally be 64-bit.  They are used in special
3163 	  cases.
3164 
3165 	  If unsure, say N.
3166 
3167 config BINFMT_ELF32
3168 	bool
3169 	default y if MIPS32_O32 || MIPS32_N32
3170 	select ELFCORE
3171 
3172 menu "Power management options"
3173 
3174 config ARCH_HIBERNATION_POSSIBLE
3175 	def_bool y
3176 	depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3177 
3178 config ARCH_SUSPEND_POSSIBLE
3179 	def_bool y
3180 	depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3181 
3182 source "kernel/power/Kconfig"
3183 
3184 endmenu
3185 
3186 config MIPS_EXTERNAL_TIMER
3187 	bool
3188 
3189 menu "CPU Power Management"
3190 
3191 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3192 source "drivers/cpufreq/Kconfig"
3193 endif
3194 
3195 source "drivers/cpuidle/Kconfig"
3196 
3197 endmenu
3198 
3199 source "drivers/firmware/Kconfig"
3200 
3201 source "arch/mips/kvm/Kconfig"
3202