Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1# SPDX-License-Identifier: GPL-2.0
2config MIPS
3 bool
4 default y
5 select ARCH_32BIT_OFF_T if !64BIT
6 select ARCH_BINFMT_ELF_STATE if MIPS_FP_SUPPORT
7 select ARCH_HAS_DEBUG_VIRTUAL if !64BIT
8 select ARCH_HAS_FORTIFY_SOURCE
9 select ARCH_HAS_KCOV
10 select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE if !EVA
11 select ARCH_HAS_PTE_SPECIAL if !(32BIT && CPU_HAS_RIXI)
12 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
13 select ARCH_HAS_UBSAN_SANITIZE_ALL
14 select ARCH_HAS_GCOV_PROFILE_ALL
15 select ARCH_KEEP_MEMBLOCK
16 select ARCH_SUPPORTS_UPROBES
17 select ARCH_USE_BUILTIN_BSWAP
18 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
19 select ARCH_USE_MEMTEST
20 select ARCH_USE_QUEUED_RWLOCKS
21 select ARCH_USE_QUEUED_SPINLOCKS
22 select ARCH_SUPPORTS_HUGETLBFS if CPU_SUPPORTS_HUGEPAGES
23 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
24 select ARCH_WANT_IPC_PARSE_VERSION
25 select ARCH_WANT_LD_ORPHAN_WARN
26 select BUILDTIME_TABLE_SORT
27 select CLONE_BACKWARDS
28 select CPU_NO_EFFICIENT_FFS if (TARGET_ISA_REV < 1)
29 select CPU_PM if CPU_IDLE
30 select GENERIC_ATOMIC64 if !64BIT
31 select GENERIC_CMOS_UPDATE
32 select GENERIC_CPU_AUTOPROBE
33 select GENERIC_FIND_FIRST_BIT
34 select GENERIC_GETTIMEOFDAY
35 select GENERIC_IOMAP
36 select GENERIC_IRQ_PROBE
37 select GENERIC_IRQ_SHOW
38 select GENERIC_ISA_DMA if EISA
39 select GENERIC_LIB_ASHLDI3
40 select GENERIC_LIB_ASHRDI3
41 select GENERIC_LIB_CMPDI2
42 select GENERIC_LIB_LSHRDI3
43 select GENERIC_LIB_UCMPDI2
44 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
45 select GENERIC_SMP_IDLE_THREAD
46 select GENERIC_TIME_VSYSCALL
47 select GUP_GET_PTE_LOW_HIGH if CPU_MIPS32 && PHYS_ADDR_T_64BIT
48 select HANDLE_DOMAIN_IRQ
49 select HAVE_ARCH_COMPILER_H
50 select HAVE_ARCH_JUMP_LABEL
51 select HAVE_ARCH_KGDB if MIPS_FP_SUPPORT
52 select HAVE_ARCH_MMAP_RND_BITS if MMU
53 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
54 select HAVE_ARCH_SECCOMP_FILTER
55 select HAVE_ARCH_TRACEHOOK
56 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES
57 select HAVE_ASM_MODVERSIONS
58 select HAVE_CBPF_JIT if !64BIT && !CPU_MICROMIPS
59 select HAVE_CONTEXT_TRACKING
60 select HAVE_TIF_NOHZ
61 select HAVE_C_RECORDMCOUNT
62 select HAVE_DEBUG_KMEMLEAK
63 select HAVE_DEBUG_STACKOVERFLOW
64 select HAVE_DMA_CONTIGUOUS
65 select HAVE_DYNAMIC_FTRACE
66 select HAVE_EBPF_JIT if 64BIT && !CPU_MICROMIPS && TARGET_ISA_REV >= 2
67 select HAVE_EXIT_THREAD
68 select HAVE_FAST_GUP
69 select HAVE_FTRACE_MCOUNT_RECORD
70 select HAVE_FUNCTION_GRAPH_TRACER
71 select HAVE_FUNCTION_TRACER
72 select HAVE_GCC_PLUGINS
73 select HAVE_GENERIC_VDSO
74 select HAVE_IDE
75 select HAVE_IOREMAP_PROT
76 select HAVE_IRQ_EXIT_ON_IRQ_STACK
77 select HAVE_IRQ_TIME_ACCOUNTING
78 select HAVE_KPROBES
79 select HAVE_KRETPROBES
80 select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
81 select HAVE_MOD_ARCH_SPECIFIC
82 select HAVE_NMI
83 select HAVE_PERF_EVENTS
84 select HAVE_PERF_REGS
85 select HAVE_PERF_USER_STACK_DUMP
86 select HAVE_REGS_AND_STACK_ACCESS_API
87 select HAVE_RSEQ
88 select HAVE_SPARSE_SYSCALL_NR
89 select HAVE_STACKPROTECTOR
90 select HAVE_SYSCALL_TRACEPOINTS
91 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
92 select IRQ_FORCED_THREADING
93 select ISA if EISA
94 select MODULES_USE_ELF_REL if MODULES
95 select MODULES_USE_ELF_RELA if MODULES && 64BIT
96 select PERF_USE_VMALLOC
97 select PCI_MSI_ARCH_FALLBACKS if PCI_MSI
98 select RTC_LIB
99 select SYSCTL_EXCEPTION_TRACE
100 select VIRT_TO_BUS
101 select ARCH_HAS_ELFCORE_COMPAT
102
103config MIPS_FIXUP_BIGPHYS_ADDR
104 bool
105
106config MIPS_GENERIC
107 bool
108
109config MACH_INGENIC
110 bool
111 select SYS_SUPPORTS_32BIT_KERNEL
112 select SYS_SUPPORTS_LITTLE_ENDIAN
113 select SYS_SUPPORTS_ZBOOT
114 select DMA_NONCOHERENT
115 select IRQ_MIPS_CPU
116 select PINCTRL
117 select GPIOLIB
118 select COMMON_CLK
119 select GENERIC_IRQ_CHIP
120 select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
121 select USE_OF
122 select CPU_SUPPORTS_CPUFREQ
123 select MIPS_EXTERNAL_TIMER
124
125menu "Machine selection"
126
127choice
128 prompt "System type"
129 default MIPS_GENERIC_KERNEL
130
131config MIPS_GENERIC_KERNEL
132 bool "Generic board-agnostic MIPS kernel"
133 select ARCH_HAS_SETUP_DMA_OPS
134 select MIPS_GENERIC
135 select BOOT_RAW
136 select BUILTIN_DTB
137 select CEVT_R4K
138 select CLKSRC_MIPS_GIC
139 select COMMON_CLK
140 select CPU_MIPSR2_IRQ_EI
141 select CPU_MIPSR2_IRQ_VI
142 select CSRC_R4K
143 select DMA_NONCOHERENT
144 select HAVE_PCI
145 select IRQ_MIPS_CPU
146 select MIPS_AUTO_PFN_OFFSET
147 select MIPS_CPU_SCACHE
148 select MIPS_GIC
149 select MIPS_L1_CACHE_SHIFT_7
150 select NO_EXCEPT_FILL
151 select PCI_DRIVERS_GENERIC
152 select SMP_UP if SMP
153 select SWAP_IO_SPACE
154 select SYS_HAS_CPU_MIPS32_R1
155 select SYS_HAS_CPU_MIPS32_R2
156 select SYS_HAS_CPU_MIPS32_R6
157 select SYS_HAS_CPU_MIPS64_R1
158 select SYS_HAS_CPU_MIPS64_R2
159 select SYS_HAS_CPU_MIPS64_R6
160 select SYS_SUPPORTS_32BIT_KERNEL
161 select SYS_SUPPORTS_64BIT_KERNEL
162 select SYS_SUPPORTS_BIG_ENDIAN
163 select SYS_SUPPORTS_HIGHMEM
164 select SYS_SUPPORTS_LITTLE_ENDIAN
165 select SYS_SUPPORTS_MICROMIPS
166 select SYS_SUPPORTS_MIPS16
167 select SYS_SUPPORTS_MIPS_CPS
168 select SYS_SUPPORTS_MULTITHREADING
169 select SYS_SUPPORTS_RELOCATABLE
170 select SYS_SUPPORTS_SMARTMIPS
171 select SYS_SUPPORTS_ZBOOT
172 select UHI_BOOT
173 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
174 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
175 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
176 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
177 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
178 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
179 select USE_OF
180 help
181 Select this to build a kernel which aims to support multiple boards,
182 generally using a flattened device tree passed from the bootloader
183 using the boot protocol defined in the UHI (Unified Hosting
184 Interface) specification.
185
186config MIPS_ALCHEMY
187 bool "Alchemy processor based machines"
188 select PHYS_ADDR_T_64BIT
189 select CEVT_R4K
190 select CSRC_R4K
191 select IRQ_MIPS_CPU
192 select DMA_NONCOHERENT # Au1000,1500,1100 aren't, rest is
193 select MIPS_FIXUP_BIGPHYS_ADDR if PCI
194 select SYS_HAS_CPU_MIPS32_R1
195 select SYS_SUPPORTS_32BIT_KERNEL
196 select SYS_SUPPORTS_APM_EMULATION
197 select GPIOLIB
198 select SYS_SUPPORTS_ZBOOT
199 select COMMON_CLK
200
201config AR7
202 bool "Texas Instruments AR7"
203 select BOOT_ELF32
204 select DMA_NONCOHERENT
205 select CEVT_R4K
206 select CSRC_R4K
207 select IRQ_MIPS_CPU
208 select NO_EXCEPT_FILL
209 select SWAP_IO_SPACE
210 select SYS_HAS_CPU_MIPS32_R1
211 select SYS_HAS_EARLY_PRINTK
212 select SYS_SUPPORTS_32BIT_KERNEL
213 select SYS_SUPPORTS_LITTLE_ENDIAN
214 select SYS_SUPPORTS_MIPS16
215 select SYS_SUPPORTS_ZBOOT_UART16550
216 select GPIOLIB
217 select VLYNQ
218 select HAVE_LEGACY_CLK
219 help
220 Support for the Texas Instruments AR7 System-on-a-Chip
221 family: TNETD7100, 7200 and 7300.
222
223config ATH25
224 bool "Atheros AR231x/AR531x SoC support"
225 select CEVT_R4K
226 select CSRC_R4K
227 select DMA_NONCOHERENT
228 select IRQ_MIPS_CPU
229 select IRQ_DOMAIN
230 select SYS_HAS_CPU_MIPS32_R1
231 select SYS_SUPPORTS_BIG_ENDIAN
232 select SYS_SUPPORTS_32BIT_KERNEL
233 select SYS_HAS_EARLY_PRINTK
234 help
235 Support for Atheros AR231x and Atheros AR531x based boards
236
237config ATH79
238 bool "Atheros AR71XX/AR724X/AR913X based boards"
239 select ARCH_HAS_RESET_CONTROLLER
240 select BOOT_RAW
241 select CEVT_R4K
242 select CSRC_R4K
243 select DMA_NONCOHERENT
244 select GPIOLIB
245 select PINCTRL
246 select COMMON_CLK
247 select IRQ_MIPS_CPU
248 select SYS_HAS_CPU_MIPS32_R2
249 select SYS_HAS_EARLY_PRINTK
250 select SYS_SUPPORTS_32BIT_KERNEL
251 select SYS_SUPPORTS_BIG_ENDIAN
252 select SYS_SUPPORTS_MIPS16
253 select SYS_SUPPORTS_ZBOOT_UART_PROM
254 select USE_OF
255 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
256 help
257 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
258
259config BMIPS_GENERIC
260 bool "Broadcom Generic BMIPS kernel"
261 select ARCH_HAS_RESET_CONTROLLER
262 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
263 select ARCH_HAS_PHYS_TO_DMA
264 select BOOT_RAW
265 select NO_EXCEPT_FILL
266 select USE_OF
267 select CEVT_R4K
268 select CSRC_R4K
269 select SYNC_R4K
270 select COMMON_CLK
271 select BCM6345_L1_IRQ
272 select BCM7038_L1_IRQ
273 select BCM7120_L2_IRQ
274 select BRCMSTB_L2_IRQ
275 select IRQ_MIPS_CPU
276 select DMA_NONCOHERENT
277 select SYS_SUPPORTS_32BIT_KERNEL
278 select SYS_SUPPORTS_LITTLE_ENDIAN
279 select SYS_SUPPORTS_BIG_ENDIAN
280 select SYS_SUPPORTS_HIGHMEM
281 select SYS_HAS_CPU_BMIPS32_3300
282 select SYS_HAS_CPU_BMIPS4350
283 select SYS_HAS_CPU_BMIPS4380
284 select SYS_HAS_CPU_BMIPS5000
285 select SWAP_IO_SPACE
286 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
287 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
288 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
289 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
290 select HARDIRQS_SW_RESEND
291 help
292 Build a generic DT-based kernel image that boots on select
293 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
294 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
295 must be set appropriately for your board.
296
297config BCM47XX
298 bool "Broadcom BCM47XX based boards"
299 select BOOT_RAW
300 select CEVT_R4K
301 select CSRC_R4K
302 select DMA_NONCOHERENT
303 select HAVE_PCI
304 select IRQ_MIPS_CPU
305 select SYS_HAS_CPU_MIPS32_R1
306 select NO_EXCEPT_FILL
307 select SYS_SUPPORTS_32BIT_KERNEL
308 select SYS_SUPPORTS_LITTLE_ENDIAN
309 select SYS_SUPPORTS_MIPS16
310 select SYS_SUPPORTS_ZBOOT
311 select SYS_HAS_EARLY_PRINTK
312 select USE_GENERIC_EARLY_PRINTK_8250
313 select GPIOLIB
314 select LEDS_GPIO_REGISTER
315 select BCM47XX_NVRAM
316 select BCM47XX_SPROM
317 select BCM47XX_SSB if !BCM47XX_BCMA
318 help
319 Support for BCM47XX based boards
320
321config BCM63XX
322 bool "Broadcom BCM63XX based boards"
323 select BOOT_RAW
324 select CEVT_R4K
325 select CSRC_R4K
326 select SYNC_R4K
327 select DMA_NONCOHERENT
328 select IRQ_MIPS_CPU
329 select SYS_SUPPORTS_32BIT_KERNEL
330 select SYS_SUPPORTS_BIG_ENDIAN
331 select SYS_HAS_EARLY_PRINTK
332 select SWAP_IO_SPACE
333 select GPIOLIB
334 select MIPS_L1_CACHE_SHIFT_4
335 select CLKDEV_LOOKUP
336 select HAVE_LEGACY_CLK
337 help
338 Support for BCM63XX based boards
339
340config MIPS_COBALT
341 bool "Cobalt Server"
342 select CEVT_R4K
343 select CSRC_R4K
344 select CEVT_GT641XX
345 select DMA_NONCOHERENT
346 select FORCE_PCI
347 select I8253
348 select I8259
349 select IRQ_MIPS_CPU
350 select IRQ_GT641XX
351 select PCI_GT64XXX_PCI0
352 select SYS_HAS_CPU_NEVADA
353 select SYS_HAS_EARLY_PRINTK
354 select SYS_SUPPORTS_32BIT_KERNEL
355 select SYS_SUPPORTS_64BIT_KERNEL
356 select SYS_SUPPORTS_LITTLE_ENDIAN
357 select USE_GENERIC_EARLY_PRINTK_8250
358
359config MACH_DECSTATION
360 bool "DECstations"
361 select BOOT_ELF32
362 select CEVT_DS1287
363 select CEVT_R4K if CPU_R4X00
364 select CSRC_IOASIC
365 select CSRC_R4K if CPU_R4X00
366 select CPU_DADDI_WORKAROUNDS if 64BIT
367 select CPU_R4000_WORKAROUNDS if 64BIT
368 select CPU_R4400_WORKAROUNDS if 64BIT
369 select DMA_NONCOHERENT
370 select NO_IOPORT_MAP
371 select IRQ_MIPS_CPU
372 select SYS_HAS_CPU_R3000
373 select SYS_HAS_CPU_R4X00
374 select SYS_SUPPORTS_32BIT_KERNEL
375 select SYS_SUPPORTS_64BIT_KERNEL
376 select SYS_SUPPORTS_LITTLE_ENDIAN
377 select SYS_SUPPORTS_128HZ
378 select SYS_SUPPORTS_256HZ
379 select SYS_SUPPORTS_1024HZ
380 select MIPS_L1_CACHE_SHIFT_4
381 help
382 This enables support for DEC's MIPS based workstations. For details
383 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
384 DECstation porting pages on <http://decstation.unix-ag.org/>.
385
386 If you have one of the following DECstation Models you definitely
387 want to choose R4xx0 for the CPU Type:
388
389 DECstation 5000/50
390 DECstation 5000/150
391 DECstation 5000/260
392 DECsystem 5900/260
393
394 otherwise choose R3000.
395
396config MACH_JAZZ
397 bool "Jazz family of machines"
398 select ARC_MEMORY
399 select ARC_PROMLIB
400 select ARCH_MIGHT_HAVE_PC_PARPORT
401 select ARCH_MIGHT_HAVE_PC_SERIO
402 select DMA_OPS
403 select FW_ARC
404 select FW_ARC32
405 select ARCH_MAY_HAVE_PC_FDC
406 select CEVT_R4K
407 select CSRC_R4K
408 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
409 select GENERIC_ISA_DMA
410 select HAVE_PCSPKR_PLATFORM
411 select IRQ_MIPS_CPU
412 select I8253
413 select I8259
414 select ISA
415 select SYS_HAS_CPU_R4X00
416 select SYS_SUPPORTS_32BIT_KERNEL
417 select SYS_SUPPORTS_64BIT_KERNEL
418 select SYS_SUPPORTS_100HZ
419 select SYS_SUPPORTS_LITTLE_ENDIAN
420 help
421 This a family of machines based on the MIPS R4030 chipset which was
422 used by several vendors to build RISC/os and Windows NT workstations.
423 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
424 Olivetti M700-10 workstations.
425
426config MACH_INGENIC_SOC
427 bool "Ingenic SoC based machines"
428 select MIPS_GENERIC
429 select MACH_INGENIC
430 select SYS_SUPPORTS_ZBOOT_UART16550
431
432config LANTIQ
433 bool "Lantiq based platforms"
434 select DMA_NONCOHERENT
435 select IRQ_MIPS_CPU
436 select CEVT_R4K
437 select CSRC_R4K
438 select SYS_HAS_CPU_MIPS32_R1
439 select SYS_HAS_CPU_MIPS32_R2
440 select SYS_SUPPORTS_BIG_ENDIAN
441 select SYS_SUPPORTS_32BIT_KERNEL
442 select SYS_SUPPORTS_MIPS16
443 select SYS_SUPPORTS_MULTITHREADING
444 select SYS_SUPPORTS_VPE_LOADER
445 select SYS_HAS_EARLY_PRINTK
446 select GPIOLIB
447 select SWAP_IO_SPACE
448 select BOOT_RAW
449 select CLKDEV_LOOKUP
450 select HAVE_LEGACY_CLK
451 select USE_OF
452 select PINCTRL
453 select PINCTRL_LANTIQ
454 select ARCH_HAS_RESET_CONTROLLER
455 select RESET_CONTROLLER
456
457config MACH_LOONGSON32
458 bool "Loongson 32-bit family of machines"
459 select SYS_SUPPORTS_ZBOOT
460 help
461 This enables support for the Loongson-1 family of machines.
462
463 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
464 the Institute of Computing Technology (ICT), Chinese Academy of
465 Sciences (CAS).
466
467config MACH_LOONGSON2EF
468 bool "Loongson-2E/F family of machines"
469 select SYS_SUPPORTS_ZBOOT
470 help
471 This enables the support of early Loongson-2E/F family of machines.
472
473config MACH_LOONGSON64
474 bool "Loongson 64-bit family of machines"
475 select ARCH_SPARSEMEM_ENABLE
476 select ARCH_MIGHT_HAVE_PC_PARPORT
477 select ARCH_MIGHT_HAVE_PC_SERIO
478 select GENERIC_ISA_DMA_SUPPORT_BROKEN
479 select BOOT_ELF32
480 select BOARD_SCACHE
481 select CSRC_R4K
482 select CEVT_R4K
483 select CPU_HAS_WB
484 select FORCE_PCI
485 select ISA
486 select I8259
487 select IRQ_MIPS_CPU
488 select NO_EXCEPT_FILL
489 select NR_CPUS_DEFAULT_64
490 select USE_GENERIC_EARLY_PRINTK_8250
491 select PCI_DRIVERS_GENERIC
492 select SYS_HAS_CPU_LOONGSON64
493 select SYS_HAS_EARLY_PRINTK
494 select SYS_SUPPORTS_SMP
495 select SYS_SUPPORTS_HOTPLUG_CPU
496 select SYS_SUPPORTS_NUMA
497 select SYS_SUPPORTS_64BIT_KERNEL
498 select SYS_SUPPORTS_HIGHMEM
499 select SYS_SUPPORTS_LITTLE_ENDIAN
500 select SYS_SUPPORTS_ZBOOT
501 select SYS_SUPPORTS_RELOCATABLE
502 select ZONE_DMA32
503 select COMMON_CLK
504 select USE_OF
505 select BUILTIN_DTB
506 select PCI_HOST_GENERIC
507 help
508 This enables the support of Loongson-2/3 family of machines.
509
510 Loongson-2 and Loongson-3 are 64-bit general-purpose processors with
511 GS264/GS464/GS464E/GS464V microarchitecture (except old Loongson-2E
512 and Loongson-2F which will be removed), developed by the Institute
513 of Computing Technology (ICT), Chinese Academy of Sciences (CAS).
514
515config MACH_PISTACHIO
516 bool "IMG Pistachio SoC based boards"
517 select BOOT_ELF32
518 select BOOT_RAW
519 select CEVT_R4K
520 select CLKSRC_MIPS_GIC
521 select COMMON_CLK
522 select CSRC_R4K
523 select DMA_NONCOHERENT
524 select GPIOLIB
525 select IRQ_MIPS_CPU
526 select MFD_SYSCON
527 select MIPS_CPU_SCACHE
528 select MIPS_GIC
529 select PINCTRL
530 select REGULATOR
531 select SYS_HAS_CPU_MIPS32_R2
532 select SYS_SUPPORTS_32BIT_KERNEL
533 select SYS_SUPPORTS_LITTLE_ENDIAN
534 select SYS_SUPPORTS_MIPS_CPS
535 select SYS_SUPPORTS_MULTITHREADING
536 select SYS_SUPPORTS_RELOCATABLE
537 select SYS_SUPPORTS_ZBOOT
538 select SYS_HAS_EARLY_PRINTK
539 select USE_GENERIC_EARLY_PRINTK_8250
540 select USE_OF
541 help
542 This enables support for the IMG Pistachio SoC platform.
543
544config MIPS_MALTA
545 bool "MIPS Malta board"
546 select ARCH_MAY_HAVE_PC_FDC
547 select ARCH_MIGHT_HAVE_PC_PARPORT
548 select ARCH_MIGHT_HAVE_PC_SERIO
549 select BOOT_ELF32
550 select BOOT_RAW
551 select BUILTIN_DTB
552 select CEVT_R4K
553 select CLKSRC_MIPS_GIC
554 select COMMON_CLK
555 select CSRC_R4K
556 select DMA_NONCOHERENT
557 select GENERIC_ISA_DMA
558 select HAVE_PCSPKR_PLATFORM
559 select HAVE_PCI
560 select I8253
561 select I8259
562 select IRQ_MIPS_CPU
563 select MIPS_BONITO64
564 select MIPS_CPU_SCACHE
565 select MIPS_GIC
566 select MIPS_L1_CACHE_SHIFT_6
567 select MIPS_MSC
568 select PCI_GT64XXX_PCI0
569 select SMP_UP if SMP
570 select SWAP_IO_SPACE
571 select SYS_HAS_CPU_MIPS32_R1
572 select SYS_HAS_CPU_MIPS32_R2
573 select SYS_HAS_CPU_MIPS32_R3_5
574 select SYS_HAS_CPU_MIPS32_R5
575 select SYS_HAS_CPU_MIPS32_R6
576 select SYS_HAS_CPU_MIPS64_R1
577 select SYS_HAS_CPU_MIPS64_R2
578 select SYS_HAS_CPU_MIPS64_R6
579 select SYS_HAS_CPU_NEVADA
580 select SYS_HAS_CPU_RM7000
581 select SYS_SUPPORTS_32BIT_KERNEL
582 select SYS_SUPPORTS_64BIT_KERNEL
583 select SYS_SUPPORTS_BIG_ENDIAN
584 select SYS_SUPPORTS_HIGHMEM
585 select SYS_SUPPORTS_LITTLE_ENDIAN
586 select SYS_SUPPORTS_MICROMIPS
587 select SYS_SUPPORTS_MIPS16
588 select SYS_SUPPORTS_MIPS_CMP
589 select SYS_SUPPORTS_MIPS_CPS
590 select SYS_SUPPORTS_MULTITHREADING
591 select SYS_SUPPORTS_RELOCATABLE
592 select SYS_SUPPORTS_SMARTMIPS
593 select SYS_SUPPORTS_VPE_LOADER
594 select SYS_SUPPORTS_ZBOOT
595 select USE_OF
596 select WAR_ICACHE_REFILLS
597 select ZONE_DMA32 if 64BIT
598 help
599 This enables support for the MIPS Technologies Malta evaluation
600 board.
601
602config MACH_PIC32
603 bool "Microchip PIC32 Family"
604 help
605 This enables support for the Microchip PIC32 family of platforms.
606
607 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
608 microcontrollers.
609
610config MACH_VR41XX
611 bool "NEC VR4100 series based machines"
612 select CEVT_R4K
613 select CSRC_R4K
614 select SYS_HAS_CPU_VR41XX
615 select SYS_SUPPORTS_MIPS16
616 select GPIOLIB
617
618config MACH_NINTENDO64
619 bool "Nintendo 64 console"
620 select CEVT_R4K
621 select CSRC_R4K
622 select SYS_HAS_CPU_R4300
623 select SYS_SUPPORTS_BIG_ENDIAN
624 select SYS_SUPPORTS_ZBOOT
625 select SYS_SUPPORTS_32BIT_KERNEL
626 select SYS_SUPPORTS_64BIT_KERNEL
627 select DMA_NONCOHERENT
628 select IRQ_MIPS_CPU
629
630config RALINK
631 bool "Ralink based machines"
632 select CEVT_R4K
633 select CSRC_R4K
634 select BOOT_RAW
635 select DMA_NONCOHERENT
636 select IRQ_MIPS_CPU
637 select USE_OF
638 select SYS_HAS_CPU_MIPS32_R1
639 select SYS_HAS_CPU_MIPS32_R2
640 select SYS_SUPPORTS_32BIT_KERNEL
641 select SYS_SUPPORTS_LITTLE_ENDIAN
642 select SYS_SUPPORTS_MIPS16
643 select SYS_SUPPORTS_ZBOOT
644 select SYS_HAS_EARLY_PRINTK
645 select CLKDEV_LOOKUP
646 select ARCH_HAS_RESET_CONTROLLER
647 select RESET_CONTROLLER
648
649config MACH_REALTEK_RTL
650 bool "Realtek RTL838x/RTL839x based machines"
651 select MIPS_GENERIC
652 select DMA_NONCOHERENT
653 select IRQ_MIPS_CPU
654 select CSRC_R4K
655 select CEVT_R4K
656 select SYS_HAS_CPU_MIPS32_R1
657 select SYS_HAS_CPU_MIPS32_R2
658 select SYS_SUPPORTS_BIG_ENDIAN
659 select SYS_SUPPORTS_32BIT_KERNEL
660 select SYS_SUPPORTS_MIPS16
661 select SYS_SUPPORTS_MULTITHREADING
662 select SYS_SUPPORTS_VPE_LOADER
663 select SYS_HAS_EARLY_PRINTK
664 select SYS_HAS_EARLY_PRINTK_8250
665 select USE_GENERIC_EARLY_PRINTK_8250
666 select BOOT_RAW
667 select PINCTRL
668 select USE_OF
669
670config SGI_IP22
671 bool "SGI IP22 (Indy/Indigo2)"
672 select ARC_MEMORY
673 select ARC_PROMLIB
674 select FW_ARC
675 select FW_ARC32
676 select ARCH_MIGHT_HAVE_PC_SERIO
677 select BOOT_ELF32
678 select CEVT_R4K
679 select CSRC_R4K
680 select DEFAULT_SGI_PARTITION
681 select DMA_NONCOHERENT
682 select HAVE_EISA
683 select I8253
684 select I8259
685 select IP22_CPU_SCACHE
686 select IRQ_MIPS_CPU
687 select GENERIC_ISA_DMA_SUPPORT_BROKEN
688 select SGI_HAS_I8042
689 select SGI_HAS_INDYDOG
690 select SGI_HAS_HAL2
691 select SGI_HAS_SEEQ
692 select SGI_HAS_WD93
693 select SGI_HAS_ZILOG
694 select SWAP_IO_SPACE
695 select SYS_HAS_CPU_R4X00
696 select SYS_HAS_CPU_R5000
697 select SYS_HAS_EARLY_PRINTK
698 select SYS_SUPPORTS_32BIT_KERNEL
699 select SYS_SUPPORTS_64BIT_KERNEL
700 select SYS_SUPPORTS_BIG_ENDIAN
701 select WAR_R4600_V1_INDEX_ICACHEOP
702 select WAR_R4600_V1_HIT_CACHEOP
703 select WAR_R4600_V2_HIT_CACHEOP
704 select MIPS_L1_CACHE_SHIFT_7
705 help
706 This are the SGI Indy, Challenge S and Indigo2, as well as certain
707 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
708 that runs on these, say Y here.
709
710config SGI_IP27
711 bool "SGI IP27 (Origin200/2000)"
712 select ARCH_HAS_PHYS_TO_DMA
713 select ARCH_SPARSEMEM_ENABLE
714 select FW_ARC
715 select FW_ARC64
716 select ARC_CMDLINE_ONLY
717 select BOOT_ELF64
718 select DEFAULT_SGI_PARTITION
719 select FORCE_PCI
720 select SYS_HAS_EARLY_PRINTK
721 select HAVE_PCI
722 select IRQ_MIPS_CPU
723 select IRQ_DOMAIN_HIERARCHY
724 select NR_CPUS_DEFAULT_64
725 select PCI_DRIVERS_GENERIC
726 select PCI_XTALK_BRIDGE
727 select SYS_HAS_CPU_R10000
728 select SYS_SUPPORTS_64BIT_KERNEL
729 select SYS_SUPPORTS_BIG_ENDIAN
730 select SYS_SUPPORTS_NUMA
731 select SYS_SUPPORTS_SMP
732 select WAR_R10000_LLSC
733 select MIPS_L1_CACHE_SHIFT_7
734 select NUMA
735 help
736 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
737 workstations. To compile a Linux kernel that runs on these, say Y
738 here.
739
740config SGI_IP28
741 bool "SGI IP28 (Indigo2 R10k)"
742 select ARC_MEMORY
743 select ARC_PROMLIB
744 select FW_ARC
745 select FW_ARC64
746 select ARCH_MIGHT_HAVE_PC_SERIO
747 select BOOT_ELF64
748 select CEVT_R4K
749 select CSRC_R4K
750 select DEFAULT_SGI_PARTITION
751 select DMA_NONCOHERENT
752 select GENERIC_ISA_DMA_SUPPORT_BROKEN
753 select IRQ_MIPS_CPU
754 select HAVE_EISA
755 select I8253
756 select I8259
757 select SGI_HAS_I8042
758 select SGI_HAS_INDYDOG
759 select SGI_HAS_HAL2
760 select SGI_HAS_SEEQ
761 select SGI_HAS_WD93
762 select SGI_HAS_ZILOG
763 select SWAP_IO_SPACE
764 select SYS_HAS_CPU_R10000
765 select SYS_HAS_EARLY_PRINTK
766 select SYS_SUPPORTS_64BIT_KERNEL
767 select SYS_SUPPORTS_BIG_ENDIAN
768 select WAR_R10000_LLSC
769 select MIPS_L1_CACHE_SHIFT_7
770 help
771 This is the SGI Indigo2 with R10000 processor. To compile a Linux
772 kernel that runs on these, say Y here.
773
774config SGI_IP30
775 bool "SGI IP30 (Octane/Octane2)"
776 select ARCH_HAS_PHYS_TO_DMA
777 select FW_ARC
778 select FW_ARC64
779 select BOOT_ELF64
780 select CEVT_R4K
781 select CSRC_R4K
782 select FORCE_PCI
783 select SYNC_R4K if SMP
784 select ZONE_DMA32
785 select HAVE_PCI
786 select IRQ_MIPS_CPU
787 select IRQ_DOMAIN_HIERARCHY
788 select NR_CPUS_DEFAULT_2
789 select PCI_DRIVERS_GENERIC
790 select PCI_XTALK_BRIDGE
791 select SYS_HAS_EARLY_PRINTK
792 select SYS_HAS_CPU_R10000
793 select SYS_SUPPORTS_64BIT_KERNEL
794 select SYS_SUPPORTS_BIG_ENDIAN
795 select SYS_SUPPORTS_SMP
796 select WAR_R10000_LLSC
797 select MIPS_L1_CACHE_SHIFT_7
798 select ARC_MEMORY
799 help
800 These are the SGI Octane and Octane2 graphics workstations. To
801 compile a Linux kernel that runs on these, say Y here.
802
803config SGI_IP32
804 bool "SGI IP32 (O2)"
805 select ARC_MEMORY
806 select ARC_PROMLIB
807 select ARCH_HAS_PHYS_TO_DMA
808 select FW_ARC
809 select FW_ARC32
810 select BOOT_ELF32
811 select CEVT_R4K
812 select CSRC_R4K
813 select DMA_NONCOHERENT
814 select HAVE_PCI
815 select IRQ_MIPS_CPU
816 select R5000_CPU_SCACHE
817 select RM7000_CPU_SCACHE
818 select SYS_HAS_CPU_R5000
819 select SYS_HAS_CPU_R10000 if BROKEN
820 select SYS_HAS_CPU_RM7000
821 select SYS_HAS_CPU_NEVADA
822 select SYS_SUPPORTS_64BIT_KERNEL
823 select SYS_SUPPORTS_BIG_ENDIAN
824 select WAR_ICACHE_REFILLS
825 help
826 If you want this kernel to run on SGI O2 workstation, say Y here.
827
828config SIBYTE_CRHINE
829 bool "Sibyte BCM91120C-CRhine"
830 select BOOT_ELF32
831 select SIBYTE_BCM1120
832 select SWAP_IO_SPACE
833 select SYS_HAS_CPU_SB1
834 select SYS_SUPPORTS_BIG_ENDIAN
835 select SYS_SUPPORTS_LITTLE_ENDIAN
836
837config SIBYTE_CARMEL
838 bool "Sibyte BCM91120x-Carmel"
839 select BOOT_ELF32
840 select SIBYTE_BCM1120
841 select SWAP_IO_SPACE
842 select SYS_HAS_CPU_SB1
843 select SYS_SUPPORTS_BIG_ENDIAN
844 select SYS_SUPPORTS_LITTLE_ENDIAN
845
846config SIBYTE_CRHONE
847 bool "Sibyte BCM91125C-CRhone"
848 select BOOT_ELF32
849 select SIBYTE_BCM1125
850 select SWAP_IO_SPACE
851 select SYS_HAS_CPU_SB1
852 select SYS_SUPPORTS_BIG_ENDIAN
853 select SYS_SUPPORTS_HIGHMEM
854 select SYS_SUPPORTS_LITTLE_ENDIAN
855
856config SIBYTE_RHONE
857 bool "Sibyte BCM91125E-Rhone"
858 select BOOT_ELF32
859 select SIBYTE_BCM1125H
860 select SWAP_IO_SPACE
861 select SYS_HAS_CPU_SB1
862 select SYS_SUPPORTS_BIG_ENDIAN
863 select SYS_SUPPORTS_LITTLE_ENDIAN
864
865config SIBYTE_SWARM
866 bool "Sibyte BCM91250A-SWARM"
867 select BOOT_ELF32
868 select HAVE_PATA_PLATFORM
869 select SIBYTE_SB1250
870 select SWAP_IO_SPACE
871 select SYS_HAS_CPU_SB1
872 select SYS_SUPPORTS_BIG_ENDIAN
873 select SYS_SUPPORTS_HIGHMEM
874 select SYS_SUPPORTS_LITTLE_ENDIAN
875 select ZONE_DMA32 if 64BIT
876 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
877
878config SIBYTE_LITTLESUR
879 bool "Sibyte BCM91250C2-LittleSur"
880 select BOOT_ELF32
881 select HAVE_PATA_PLATFORM
882 select SIBYTE_SB1250
883 select SWAP_IO_SPACE
884 select SYS_HAS_CPU_SB1
885 select SYS_SUPPORTS_BIG_ENDIAN
886 select SYS_SUPPORTS_HIGHMEM
887 select SYS_SUPPORTS_LITTLE_ENDIAN
888 select ZONE_DMA32 if 64BIT
889
890config SIBYTE_SENTOSA
891 bool "Sibyte BCM91250E-Sentosa"
892 select BOOT_ELF32
893 select SIBYTE_SB1250
894 select SWAP_IO_SPACE
895 select SYS_HAS_CPU_SB1
896 select SYS_SUPPORTS_BIG_ENDIAN
897 select SYS_SUPPORTS_LITTLE_ENDIAN
898 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
899
900config SIBYTE_BIGSUR
901 bool "Sibyte BCM91480B-BigSur"
902 select BOOT_ELF32
903 select NR_CPUS_DEFAULT_4
904 select SIBYTE_BCM1x80
905 select SWAP_IO_SPACE
906 select SYS_HAS_CPU_SB1
907 select SYS_SUPPORTS_BIG_ENDIAN
908 select SYS_SUPPORTS_HIGHMEM
909 select SYS_SUPPORTS_LITTLE_ENDIAN
910 select ZONE_DMA32 if 64BIT
911 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
912
913config SNI_RM
914 bool "SNI RM200/300/400"
915 select ARC_MEMORY
916 select ARC_PROMLIB
917 select FW_ARC if CPU_LITTLE_ENDIAN
918 select FW_ARC32 if CPU_LITTLE_ENDIAN
919 select FW_SNIPROM if CPU_BIG_ENDIAN
920 select ARCH_MAY_HAVE_PC_FDC
921 select ARCH_MIGHT_HAVE_PC_PARPORT
922 select ARCH_MIGHT_HAVE_PC_SERIO
923 select BOOT_ELF32
924 select CEVT_R4K
925 select CSRC_R4K
926 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
927 select DMA_NONCOHERENT
928 select GENERIC_ISA_DMA
929 select HAVE_EISA
930 select HAVE_PCSPKR_PLATFORM
931 select HAVE_PCI
932 select IRQ_MIPS_CPU
933 select I8253
934 select I8259
935 select ISA
936 select MIPS_L1_CACHE_SHIFT_6
937 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
938 select SYS_HAS_CPU_R4X00
939 select SYS_HAS_CPU_R5000
940 select SYS_HAS_CPU_R10000
941 select R5000_CPU_SCACHE
942 select SYS_HAS_EARLY_PRINTK
943 select SYS_SUPPORTS_32BIT_KERNEL
944 select SYS_SUPPORTS_64BIT_KERNEL
945 select SYS_SUPPORTS_BIG_ENDIAN
946 select SYS_SUPPORTS_HIGHMEM
947 select SYS_SUPPORTS_LITTLE_ENDIAN
948 select WAR_R4600_V2_HIT_CACHEOP
949 help
950 The SNI RM200/300/400 are MIPS-based machines manufactured by
951 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
952 Technology and now in turn merged with Fujitsu. Say Y here to
953 support this machine type.
954
955config MACH_TX39XX
956 bool "Toshiba TX39 series based machines"
957
958config MACH_TX49XX
959 bool "Toshiba TX49 series based machines"
960 select WAR_TX49XX_ICACHE_INDEX_INV
961
962config MIKROTIK_RB532
963 bool "Mikrotik RB532 boards"
964 select CEVT_R4K
965 select CSRC_R4K
966 select DMA_NONCOHERENT
967 select HAVE_PCI
968 select IRQ_MIPS_CPU
969 select SYS_HAS_CPU_MIPS32_R1
970 select SYS_SUPPORTS_32BIT_KERNEL
971 select SYS_SUPPORTS_LITTLE_ENDIAN
972 select SWAP_IO_SPACE
973 select BOOT_RAW
974 select GPIOLIB
975 select MIPS_L1_CACHE_SHIFT_4
976 help
977 Support the Mikrotik(tm) RouterBoard 532 series,
978 based on the IDT RC32434 SoC.
979
980config CAVIUM_OCTEON_SOC
981 bool "Cavium Networks Octeon SoC based boards"
982 select CEVT_R4K
983 select ARCH_HAS_PHYS_TO_DMA
984 select HAVE_RAPIDIO
985 select PHYS_ADDR_T_64BIT
986 select SYS_SUPPORTS_64BIT_KERNEL
987 select SYS_SUPPORTS_BIG_ENDIAN
988 select EDAC_SUPPORT
989 select EDAC_ATOMIC_SCRUB
990 select SYS_SUPPORTS_LITTLE_ENDIAN
991 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
992 select SYS_HAS_EARLY_PRINTK
993 select SYS_HAS_CPU_CAVIUM_OCTEON
994 select HAVE_PCI
995 select HAVE_PLAT_DELAY
996 select HAVE_PLAT_FW_INIT_CMDLINE
997 select HAVE_PLAT_MEMCPY
998 select ZONE_DMA32
999 select HOLES_IN_ZONE
1000 select GPIOLIB
1001 select USE_OF
1002 select ARCH_SPARSEMEM_ENABLE
1003 select SYS_SUPPORTS_SMP
1004 select NR_CPUS_DEFAULT_64
1005 select MIPS_NR_CPU_NR_MAP_1024
1006 select BUILTIN_DTB
1007 select MTD
1008 select MTD_COMPLEX_MAPPINGS
1009 select SWIOTLB
1010 select SYS_SUPPORTS_RELOCATABLE
1011 help
1012 This option supports all of the Octeon reference boards from Cavium
1013 Networks. It builds a kernel that dynamically determines the Octeon
1014 CPU type and supports all known board reference implementations.
1015 Some of the supported boards are:
1016 EBT3000
1017 EBH3000
1018 EBH3100
1019 Thunder
1020 Kodama
1021 Hikari
1022 Say Y here for most Octeon reference boards.
1023
1024config NLM_XLR_BOARD
1025 bool "Netlogic XLR/XLS based systems"
1026 select BOOT_ELF32
1027 select NLM_COMMON
1028 select SYS_HAS_CPU_XLR
1029 select SYS_SUPPORTS_SMP
1030 select HAVE_PCI
1031 select SWAP_IO_SPACE
1032 select SYS_SUPPORTS_32BIT_KERNEL
1033 select SYS_SUPPORTS_64BIT_KERNEL
1034 select PHYS_ADDR_T_64BIT
1035 select SYS_SUPPORTS_BIG_ENDIAN
1036 select SYS_SUPPORTS_HIGHMEM
1037 select NR_CPUS_DEFAULT_32
1038 select CEVT_R4K
1039 select CSRC_R4K
1040 select IRQ_MIPS_CPU
1041 select ZONE_DMA32 if 64BIT
1042 select SYNC_R4K
1043 select SYS_HAS_EARLY_PRINTK
1044 select SYS_SUPPORTS_ZBOOT
1045 select SYS_SUPPORTS_ZBOOT_UART16550
1046 help
1047 Support for systems based on Netlogic XLR and XLS processors.
1048 Say Y here if you have a XLR or XLS based board.
1049
1050config NLM_XLP_BOARD
1051 bool "Netlogic XLP based systems"
1052 select BOOT_ELF32
1053 select NLM_COMMON
1054 select SYS_HAS_CPU_XLP
1055 select SYS_SUPPORTS_SMP
1056 select HAVE_PCI
1057 select SYS_SUPPORTS_32BIT_KERNEL
1058 select SYS_SUPPORTS_64BIT_KERNEL
1059 select PHYS_ADDR_T_64BIT
1060 select GPIOLIB
1061 select SYS_SUPPORTS_BIG_ENDIAN
1062 select SYS_SUPPORTS_LITTLE_ENDIAN
1063 select SYS_SUPPORTS_HIGHMEM
1064 select NR_CPUS_DEFAULT_32
1065 select CEVT_R4K
1066 select CSRC_R4K
1067 select IRQ_MIPS_CPU
1068 select ZONE_DMA32 if 64BIT
1069 select SYNC_R4K
1070 select SYS_HAS_EARLY_PRINTK
1071 select USE_OF
1072 select SYS_SUPPORTS_ZBOOT
1073 select SYS_SUPPORTS_ZBOOT_UART16550
1074 help
1075 This board is based on Netlogic XLP Processor.
1076 Say Y here if you have a XLP based board.
1077
1078endchoice
1079
1080source "arch/mips/alchemy/Kconfig"
1081source "arch/mips/ath25/Kconfig"
1082source "arch/mips/ath79/Kconfig"
1083source "arch/mips/bcm47xx/Kconfig"
1084source "arch/mips/bcm63xx/Kconfig"
1085source "arch/mips/bmips/Kconfig"
1086source "arch/mips/generic/Kconfig"
1087source "arch/mips/ingenic/Kconfig"
1088source "arch/mips/jazz/Kconfig"
1089source "arch/mips/lantiq/Kconfig"
1090source "arch/mips/pic32/Kconfig"
1091source "arch/mips/pistachio/Kconfig"
1092source "arch/mips/ralink/Kconfig"
1093source "arch/mips/sgi-ip27/Kconfig"
1094source "arch/mips/sibyte/Kconfig"
1095source "arch/mips/txx9/Kconfig"
1096source "arch/mips/vr41xx/Kconfig"
1097source "arch/mips/cavium-octeon/Kconfig"
1098source "arch/mips/loongson2ef/Kconfig"
1099source "arch/mips/loongson32/Kconfig"
1100source "arch/mips/loongson64/Kconfig"
1101source "arch/mips/netlogic/Kconfig"
1102
1103endmenu
1104
1105config GENERIC_HWEIGHT
1106 bool
1107 default y
1108
1109config GENERIC_CALIBRATE_DELAY
1110 bool
1111 default y
1112
1113config SCHED_OMIT_FRAME_POINTER
1114 bool
1115 default y
1116
1117#
1118# Select some configuration options automatically based on user selections.
1119#
1120config FW_ARC
1121 bool
1122
1123config ARCH_MAY_HAVE_PC_FDC
1124 bool
1125
1126config BOOT_RAW
1127 bool
1128
1129config CEVT_BCM1480
1130 bool
1131
1132config CEVT_DS1287
1133 bool
1134
1135config CEVT_GT641XX
1136 bool
1137
1138config CEVT_R4K
1139 bool
1140
1141config CEVT_SB1250
1142 bool
1143
1144config CEVT_TXX9
1145 bool
1146
1147config CSRC_BCM1480
1148 bool
1149
1150config CSRC_IOASIC
1151 bool
1152
1153config CSRC_R4K
1154 select CLOCKSOURCE_WATCHDOG if CPU_FREQ
1155 bool
1156
1157config CSRC_SB1250
1158 bool
1159
1160config MIPS_CLOCK_VSYSCALL
1161 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1162
1163config GPIO_TXX9
1164 select GPIOLIB
1165 bool
1166
1167config FW_CFE
1168 bool
1169
1170config ARCH_SUPPORTS_UPROBES
1171 bool
1172
1173config DMA_PERDEV_COHERENT
1174 bool
1175 select ARCH_HAS_SETUP_DMA_OPS
1176 select DMA_NONCOHERENT
1177
1178config DMA_NONCOHERENT
1179 bool
1180 #
1181 # MIPS allows mixing "slightly different" Cacheability and Coherency
1182 # Attribute bits. It is believed that the uncached access through
1183 # KSEG1 and the implementation specific "uncached accelerated" used
1184 # by pgprot_writcombine can be mixed, and the latter sometimes provides
1185 # significant advantages.
1186 #
1187 select ARCH_HAS_DMA_WRITE_COMBINE
1188 select ARCH_HAS_DMA_PREP_COHERENT
1189 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1190 select ARCH_HAS_DMA_SET_UNCACHED
1191 select DMA_NONCOHERENT_MMAP
1192 select NEED_DMA_MAP_STATE
1193
1194config SYS_HAS_EARLY_PRINTK
1195 bool
1196
1197config SYS_SUPPORTS_HOTPLUG_CPU
1198 bool
1199
1200config MIPS_BONITO64
1201 bool
1202
1203config MIPS_MSC
1204 bool
1205
1206config SYNC_R4K
1207 bool
1208
1209config NO_IOPORT_MAP
1210 def_bool n
1211
1212config GENERIC_CSUM
1213 def_bool CPU_NO_LOAD_STORE_LR
1214
1215config GENERIC_ISA_DMA
1216 bool
1217 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1218 select ISA_DMA_API
1219
1220config GENERIC_ISA_DMA_SUPPORT_BROKEN
1221 bool
1222 select GENERIC_ISA_DMA
1223
1224config HAVE_PLAT_DELAY
1225 bool
1226
1227config HAVE_PLAT_FW_INIT_CMDLINE
1228 bool
1229
1230config HAVE_PLAT_MEMCPY
1231 bool
1232
1233config ISA_DMA_API
1234 bool
1235
1236config HOLES_IN_ZONE
1237 bool
1238
1239config SYS_SUPPORTS_RELOCATABLE
1240 bool
1241 help
1242 Selected if the platform supports relocating the kernel.
1243 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1244 to allow access to command line and entropy sources.
1245
1246config MIPS_CBPF_JIT
1247 def_bool y
1248 depends on BPF_JIT && HAVE_CBPF_JIT
1249
1250config MIPS_EBPF_JIT
1251 def_bool y
1252 depends on BPF_JIT && HAVE_EBPF_JIT
1253
1254
1255#
1256# Endianness selection. Sufficiently obscure so many users don't know what to
1257# answer,so we try hard to limit the available choices. Also the use of a
1258# choice statement should be more obvious to the user.
1259#
1260choice
1261 prompt "Endianness selection"
1262 help
1263 Some MIPS machines can be configured for either little or big endian
1264 byte order. These modes require different kernels and a different
1265 Linux distribution. In general there is one preferred byteorder for a
1266 particular system but some systems are just as commonly used in the
1267 one or the other endianness.
1268
1269config CPU_BIG_ENDIAN
1270 bool "Big endian"
1271 depends on SYS_SUPPORTS_BIG_ENDIAN
1272
1273config CPU_LITTLE_ENDIAN
1274 bool "Little endian"
1275 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1276
1277endchoice
1278
1279config EXPORT_UASM
1280 bool
1281
1282config SYS_SUPPORTS_APM_EMULATION
1283 bool
1284
1285config SYS_SUPPORTS_BIG_ENDIAN
1286 bool
1287
1288config SYS_SUPPORTS_LITTLE_ENDIAN
1289 bool
1290
1291config MIPS_HUGE_TLB_SUPPORT
1292 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1293
1294config IRQ_MSP_SLP
1295 bool
1296
1297config IRQ_MSP_CIC
1298 bool
1299
1300config IRQ_TXX9
1301 bool
1302
1303config IRQ_GT641XX
1304 bool
1305
1306config PCI_GT64XXX_PCI0
1307 bool
1308
1309config PCI_XTALK_BRIDGE
1310 bool
1311
1312config NO_EXCEPT_FILL
1313 bool
1314
1315config MIPS_SPRAM
1316 bool
1317
1318config SWAP_IO_SPACE
1319 bool
1320
1321config SGI_HAS_INDYDOG
1322 bool
1323
1324config SGI_HAS_HAL2
1325 bool
1326
1327config SGI_HAS_SEEQ
1328 bool
1329
1330config SGI_HAS_WD93
1331 bool
1332
1333config SGI_HAS_ZILOG
1334 bool
1335
1336config SGI_HAS_I8042
1337 bool
1338
1339config DEFAULT_SGI_PARTITION
1340 bool
1341
1342config FW_ARC32
1343 bool
1344
1345config FW_SNIPROM
1346 bool
1347
1348config BOOT_ELF32
1349 bool
1350
1351config MIPS_L1_CACHE_SHIFT_4
1352 bool
1353
1354config MIPS_L1_CACHE_SHIFT_5
1355 bool
1356
1357config MIPS_L1_CACHE_SHIFT_6
1358 bool
1359
1360config MIPS_L1_CACHE_SHIFT_7
1361 bool
1362
1363config MIPS_L1_CACHE_SHIFT
1364 int
1365 default "7" if MIPS_L1_CACHE_SHIFT_7
1366 default "6" if MIPS_L1_CACHE_SHIFT_6
1367 default "5" if MIPS_L1_CACHE_SHIFT_5
1368 default "4" if MIPS_L1_CACHE_SHIFT_4
1369 default "5"
1370
1371config ARC_CMDLINE_ONLY
1372 bool
1373
1374config ARC_CONSOLE
1375 bool "ARC console support"
1376 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1377
1378config ARC_MEMORY
1379 bool
1380
1381config ARC_PROMLIB
1382 bool
1383
1384config FW_ARC64
1385 bool
1386
1387config BOOT_ELF64
1388 bool
1389
1390menu "CPU selection"
1391
1392choice
1393 prompt "CPU type"
1394 default CPU_R4X00
1395
1396config CPU_LOONGSON64
1397 bool "Loongson 64-bit CPU"
1398 depends on SYS_HAS_CPU_LOONGSON64
1399 select ARCH_HAS_PHYS_TO_DMA
1400 select CPU_MIPSR2
1401 select CPU_HAS_PREFETCH
1402 select CPU_SUPPORTS_64BIT_KERNEL
1403 select CPU_SUPPORTS_HIGHMEM
1404 select CPU_SUPPORTS_HUGEPAGES
1405 select CPU_SUPPORTS_MSA
1406 select CPU_DIEI_BROKEN if !LOONGSON3_ENHANCEMENT
1407 select CPU_MIPSR2_IRQ_VI
1408 select WEAK_ORDERING
1409 select WEAK_REORDERING_BEYOND_LLSC
1410 select MIPS_ASID_BITS_VARIABLE
1411 select MIPS_PGD_C0_CONTEXT
1412 select MIPS_L1_CACHE_SHIFT_6
1413 select GPIOLIB
1414 select SWIOTLB
1415 select HAVE_KVM
1416 help
1417 The Loongson GSx64(GS264/GS464/GS464E/GS464V) series of processor
1418 cores implements the MIPS64R2 instruction set with many extensions,
1419 including most 64-bit Loongson-2 (2H, 2K) and Loongson-3 (3A1000,
1420 3B1000, 3B1500, 3A2000, 3A3000 and 3A4000) processors. However, old
1421 Loongson-2E/2F is not covered here and will be removed in future.
1422
1423config LOONGSON3_ENHANCEMENT
1424 bool "New Loongson-3 CPU Enhancements"
1425 default n
1426 depends on CPU_LOONGSON64
1427 help
1428 New Loongson-3 cores (since Loongson-3A R2, as opposed to Loongson-3A
1429 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1430 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPr2 ASE, User
1431 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1432 Fast TLB refill support, etc.
1433
1434 This option enable those enhancements which are not probed at run
1435 time. If you want a generic kernel to run on all Loongson 3 machines,
1436 please say 'N' here. If you want a high-performance kernel to run on
1437 new Loongson-3 machines only, please say 'Y' here.
1438
1439config CPU_LOONGSON3_WORKAROUNDS
1440 bool "Old Loongson-3 LLSC Workarounds"
1441 default y if SMP
1442 depends on CPU_LOONGSON64
1443 help
1444 Loongson-3 processors have the llsc issues which require workarounds.
1445 Without workarounds the system may hang unexpectedly.
1446
1447 Newer Loongson-3 will fix these issues and no workarounds are needed.
1448 The workarounds have no significant side effect on them but may
1449 decrease the performance of the system so this option should be
1450 disabled unless the kernel is intended to be run on old systems.
1451
1452 If unsure, please say Y.
1453
1454config CPU_LOONGSON3_CPUCFG_EMULATION
1455 bool "Emulate the CPUCFG instruction on older Loongson cores"
1456 default y
1457 depends on CPU_LOONGSON64
1458 help
1459 Loongson-3A R4 and newer have the CPUCFG instruction available for
1460 userland to query CPU capabilities, much like CPUID on x86. This
1461 option provides emulation of the instruction on older Loongson
1462 cores, back to Loongson-3A1000.
1463
1464 If unsure, please say Y.
1465
1466config CPU_LOONGSON2E
1467 bool "Loongson 2E"
1468 depends on SYS_HAS_CPU_LOONGSON2E
1469 select CPU_LOONGSON2EF
1470 help
1471 The Loongson 2E processor implements the MIPS III instruction set
1472 with many extensions.
1473
1474 It has an internal FPGA northbridge, which is compatible to
1475 bonito64.
1476
1477config CPU_LOONGSON2F
1478 bool "Loongson 2F"
1479 depends on SYS_HAS_CPU_LOONGSON2F
1480 select CPU_LOONGSON2EF
1481 select GPIOLIB
1482 help
1483 The Loongson 2F processor implements the MIPS III instruction set
1484 with many extensions.
1485
1486 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1487 have a similar programming interface with FPGA northbridge used in
1488 Loongson2E.
1489
1490config CPU_LOONGSON1B
1491 bool "Loongson 1B"
1492 depends on SYS_HAS_CPU_LOONGSON1B
1493 select CPU_LOONGSON32
1494 select LEDS_GPIO_REGISTER
1495 help
1496 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1497 Release 1 instruction set and part of the MIPS32 Release 2
1498 instruction set.
1499
1500config CPU_LOONGSON1C
1501 bool "Loongson 1C"
1502 depends on SYS_HAS_CPU_LOONGSON1C
1503 select CPU_LOONGSON32
1504 select LEDS_GPIO_REGISTER
1505 help
1506 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1507 Release 1 instruction set and part of the MIPS32 Release 2
1508 instruction set.
1509
1510config CPU_MIPS32_R1
1511 bool "MIPS32 Release 1"
1512 depends on SYS_HAS_CPU_MIPS32_R1
1513 select CPU_HAS_PREFETCH
1514 select CPU_SUPPORTS_32BIT_KERNEL
1515 select CPU_SUPPORTS_HIGHMEM
1516 help
1517 Choose this option to build a kernel for release 1 or later of the
1518 MIPS32 architecture. Most modern embedded systems with a 32-bit
1519 MIPS processor are based on a MIPS32 processor. If you know the
1520 specific type of processor in your system, choose those that one
1521 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1522 Release 2 of the MIPS32 architecture is available since several
1523 years so chances are you even have a MIPS32 Release 2 processor
1524 in which case you should choose CPU_MIPS32_R2 instead for better
1525 performance.
1526
1527config CPU_MIPS32_R2
1528 bool "MIPS32 Release 2"
1529 depends on SYS_HAS_CPU_MIPS32_R2
1530 select CPU_HAS_PREFETCH
1531 select CPU_SUPPORTS_32BIT_KERNEL
1532 select CPU_SUPPORTS_HIGHMEM
1533 select CPU_SUPPORTS_MSA
1534 select HAVE_KVM
1535 help
1536 Choose this option to build a kernel for release 2 or later of the
1537 MIPS32 architecture. Most modern embedded systems with a 32-bit
1538 MIPS processor are based on a MIPS32 processor. If you know the
1539 specific type of processor in your system, choose those that one
1540 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1541
1542config CPU_MIPS32_R5
1543 bool "MIPS32 Release 5"
1544 depends on SYS_HAS_CPU_MIPS32_R5
1545 select CPU_HAS_PREFETCH
1546 select CPU_SUPPORTS_32BIT_KERNEL
1547 select CPU_SUPPORTS_HIGHMEM
1548 select CPU_SUPPORTS_MSA
1549 select HAVE_KVM
1550 select MIPS_O32_FP64_SUPPORT
1551 help
1552 Choose this option to build a kernel for release 5 or later of the
1553 MIPS32 architecture. New MIPS processors, starting with the Warrior
1554 family, are based on a MIPS32r5 processor. If you own an older
1555 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1556
1557config CPU_MIPS32_R6
1558 bool "MIPS32 Release 6"
1559 depends on SYS_HAS_CPU_MIPS32_R6
1560 select CPU_HAS_PREFETCH
1561 select CPU_NO_LOAD_STORE_LR
1562 select CPU_SUPPORTS_32BIT_KERNEL
1563 select CPU_SUPPORTS_HIGHMEM
1564 select CPU_SUPPORTS_MSA
1565 select HAVE_KVM
1566 select MIPS_O32_FP64_SUPPORT
1567 help
1568 Choose this option to build a kernel for release 6 or later of the
1569 MIPS32 architecture. New MIPS processors, starting with the Warrior
1570 family, are based on a MIPS32r6 processor. If you own an older
1571 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1572
1573config CPU_MIPS64_R1
1574 bool "MIPS64 Release 1"
1575 depends on SYS_HAS_CPU_MIPS64_R1
1576 select CPU_HAS_PREFETCH
1577 select CPU_SUPPORTS_32BIT_KERNEL
1578 select CPU_SUPPORTS_64BIT_KERNEL
1579 select CPU_SUPPORTS_HIGHMEM
1580 select CPU_SUPPORTS_HUGEPAGES
1581 help
1582 Choose this option to build a kernel for release 1 or later of the
1583 MIPS64 architecture. Many modern embedded systems with a 64-bit
1584 MIPS processor are based on a MIPS64 processor. If you know the
1585 specific type of processor in your system, choose those that one
1586 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1587 Release 2 of the MIPS64 architecture is available since several
1588 years so chances are you even have a MIPS64 Release 2 processor
1589 in which case you should choose CPU_MIPS64_R2 instead for better
1590 performance.
1591
1592config CPU_MIPS64_R2
1593 bool "MIPS64 Release 2"
1594 depends on SYS_HAS_CPU_MIPS64_R2
1595 select CPU_HAS_PREFETCH
1596 select CPU_SUPPORTS_32BIT_KERNEL
1597 select CPU_SUPPORTS_64BIT_KERNEL
1598 select CPU_SUPPORTS_HIGHMEM
1599 select CPU_SUPPORTS_HUGEPAGES
1600 select CPU_SUPPORTS_MSA
1601 select HAVE_KVM
1602 help
1603 Choose this option to build a kernel for release 2 or later of the
1604 MIPS64 architecture. Many modern embedded systems with a 64-bit
1605 MIPS processor are based on a MIPS64 processor. If you know the
1606 specific type of processor in your system, choose those that one
1607 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1608
1609config CPU_MIPS64_R5
1610 bool "MIPS64 Release 5"
1611 depends on SYS_HAS_CPU_MIPS64_R5
1612 select CPU_HAS_PREFETCH
1613 select CPU_SUPPORTS_32BIT_KERNEL
1614 select CPU_SUPPORTS_64BIT_KERNEL
1615 select CPU_SUPPORTS_HIGHMEM
1616 select CPU_SUPPORTS_HUGEPAGES
1617 select CPU_SUPPORTS_MSA
1618 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1619 select HAVE_KVM
1620 help
1621 Choose this option to build a kernel for release 5 or later of the
1622 MIPS64 architecture. This is a intermediate MIPS architecture
1623 release partly implementing release 6 features. Though there is no
1624 any hardware known to be based on this release.
1625
1626config CPU_MIPS64_R6
1627 bool "MIPS64 Release 6"
1628 depends on SYS_HAS_CPU_MIPS64_R6
1629 select CPU_HAS_PREFETCH
1630 select CPU_NO_LOAD_STORE_LR
1631 select CPU_SUPPORTS_32BIT_KERNEL
1632 select CPU_SUPPORTS_64BIT_KERNEL
1633 select CPU_SUPPORTS_HIGHMEM
1634 select CPU_SUPPORTS_HUGEPAGES
1635 select CPU_SUPPORTS_MSA
1636 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1637 select HAVE_KVM
1638 help
1639 Choose this option to build a kernel for release 6 or later of the
1640 MIPS64 architecture. New MIPS processors, starting with the Warrior
1641 family, are based on a MIPS64r6 processor. If you own an older
1642 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1643
1644config CPU_P5600
1645 bool "MIPS Warrior P5600"
1646 depends on SYS_HAS_CPU_P5600
1647 select CPU_HAS_PREFETCH
1648 select CPU_SUPPORTS_32BIT_KERNEL
1649 select CPU_SUPPORTS_HIGHMEM
1650 select CPU_SUPPORTS_MSA
1651 select CPU_SUPPORTS_CPUFREQ
1652 select CPU_MIPSR2_IRQ_VI
1653 select CPU_MIPSR2_IRQ_EI
1654 select HAVE_KVM
1655 select MIPS_O32_FP64_SUPPORT
1656 help
1657 Choose this option to build a kernel for MIPS Warrior P5600 CPU.
1658 It's based on MIPS32r5 ISA with XPA, EVA, dual/quad issue exec pipes,
1659 MMU with two-levels TLB, UCA, MSA, MDU core level features and system
1660 level features like up to six P5600 calculation cores, CM2 with L2
1661 cache, IOCU/IOMMU (though might be unused depending on the system-
1662 specific IP core configuration), GIC, CPC, virtualisation module,
1663 eJTAG and PDtrace.
1664
1665config CPU_R3000
1666 bool "R3000"
1667 depends on SYS_HAS_CPU_R3000
1668 select CPU_HAS_WB
1669 select CPU_R3K_TLB
1670 select CPU_SUPPORTS_32BIT_KERNEL
1671 select CPU_SUPPORTS_HIGHMEM
1672 help
1673 Please make sure to pick the right CPU type. Linux/MIPS is not
1674 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1675 *not* work on R4000 machines and vice versa. However, since most
1676 of the supported machines have an R4000 (or similar) CPU, R4x00
1677 might be a safe bet. If the resulting kernel does not work,
1678 try to recompile with R3000.
1679
1680config CPU_TX39XX
1681 bool "R39XX"
1682 depends on SYS_HAS_CPU_TX39XX
1683 select CPU_SUPPORTS_32BIT_KERNEL
1684 select CPU_R3K_TLB
1685
1686config CPU_VR41XX
1687 bool "R41xx"
1688 depends on SYS_HAS_CPU_VR41XX
1689 select CPU_SUPPORTS_32BIT_KERNEL
1690 select CPU_SUPPORTS_64BIT_KERNEL
1691 help
1692 The options selects support for the NEC VR4100 series of processors.
1693 Only choose this option if you have one of these processors as a
1694 kernel built with this option will not run on any other type of
1695 processor or vice versa.
1696
1697config CPU_R4300
1698 bool "R4300"
1699 depends on SYS_HAS_CPU_R4300
1700 select CPU_SUPPORTS_32BIT_KERNEL
1701 select CPU_SUPPORTS_64BIT_KERNEL
1702 select CPU_HAS_LOAD_STORE_LR
1703 help
1704 MIPS Technologies R4300-series processors.
1705
1706config CPU_R4X00
1707 bool "R4x00"
1708 depends on SYS_HAS_CPU_R4X00
1709 select CPU_SUPPORTS_32BIT_KERNEL
1710 select CPU_SUPPORTS_64BIT_KERNEL
1711 select CPU_SUPPORTS_HUGEPAGES
1712 help
1713 MIPS Technologies R4000-series processors other than 4300, including
1714 the R4000, R4400, R4600, and 4700.
1715
1716config CPU_TX49XX
1717 bool "R49XX"
1718 depends on SYS_HAS_CPU_TX49XX
1719 select CPU_HAS_PREFETCH
1720 select CPU_SUPPORTS_32BIT_KERNEL
1721 select CPU_SUPPORTS_64BIT_KERNEL
1722 select CPU_SUPPORTS_HUGEPAGES
1723
1724config CPU_R5000
1725 bool "R5000"
1726 depends on SYS_HAS_CPU_R5000
1727 select CPU_SUPPORTS_32BIT_KERNEL
1728 select CPU_SUPPORTS_64BIT_KERNEL
1729 select CPU_SUPPORTS_HUGEPAGES
1730 help
1731 MIPS Technologies R5000-series processors other than the Nevada.
1732
1733config CPU_R5500
1734 bool "R5500"
1735 depends on SYS_HAS_CPU_R5500
1736 select CPU_SUPPORTS_32BIT_KERNEL
1737 select CPU_SUPPORTS_64BIT_KERNEL
1738 select CPU_SUPPORTS_HUGEPAGES
1739 help
1740 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1741 instruction set.
1742
1743config CPU_NEVADA
1744 bool "RM52xx"
1745 depends on SYS_HAS_CPU_NEVADA
1746 select CPU_SUPPORTS_32BIT_KERNEL
1747 select CPU_SUPPORTS_64BIT_KERNEL
1748 select CPU_SUPPORTS_HUGEPAGES
1749 help
1750 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1751
1752config CPU_R10000
1753 bool "R10000"
1754 depends on SYS_HAS_CPU_R10000
1755 select CPU_HAS_PREFETCH
1756 select CPU_SUPPORTS_32BIT_KERNEL
1757 select CPU_SUPPORTS_64BIT_KERNEL
1758 select CPU_SUPPORTS_HIGHMEM
1759 select CPU_SUPPORTS_HUGEPAGES
1760 help
1761 MIPS Technologies R10000-series processors.
1762
1763config CPU_RM7000
1764 bool "RM7000"
1765 depends on SYS_HAS_CPU_RM7000
1766 select CPU_HAS_PREFETCH
1767 select CPU_SUPPORTS_32BIT_KERNEL
1768 select CPU_SUPPORTS_64BIT_KERNEL
1769 select CPU_SUPPORTS_HIGHMEM
1770 select CPU_SUPPORTS_HUGEPAGES
1771
1772config CPU_SB1
1773 bool "SB1"
1774 depends on SYS_HAS_CPU_SB1
1775 select CPU_SUPPORTS_32BIT_KERNEL
1776 select CPU_SUPPORTS_64BIT_KERNEL
1777 select CPU_SUPPORTS_HIGHMEM
1778 select CPU_SUPPORTS_HUGEPAGES
1779 select WEAK_ORDERING
1780
1781config CPU_CAVIUM_OCTEON
1782 bool "Cavium Octeon processor"
1783 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1784 select CPU_HAS_PREFETCH
1785 select CPU_SUPPORTS_64BIT_KERNEL
1786 select WEAK_ORDERING
1787 select CPU_SUPPORTS_HIGHMEM
1788 select CPU_SUPPORTS_HUGEPAGES
1789 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1790 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1791 select MIPS_L1_CACHE_SHIFT_7
1792 select HAVE_KVM
1793 help
1794 The Cavium Octeon processor is a highly integrated chip containing
1795 many ethernet hardware widgets for networking tasks. The processor
1796 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1797 Full details can be found at http://www.caviumnetworks.com.
1798
1799config CPU_BMIPS
1800 bool "Broadcom BMIPS"
1801 depends on SYS_HAS_CPU_BMIPS
1802 select CPU_MIPS32
1803 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1804 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1805 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1806 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1807 select CPU_SUPPORTS_32BIT_KERNEL
1808 select DMA_NONCOHERENT
1809 select IRQ_MIPS_CPU
1810 select SWAP_IO_SPACE
1811 select WEAK_ORDERING
1812 select CPU_SUPPORTS_HIGHMEM
1813 select CPU_HAS_PREFETCH
1814 select CPU_SUPPORTS_CPUFREQ
1815 select MIPS_EXTERNAL_TIMER
1816 help
1817 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1818
1819config CPU_XLR
1820 bool "Netlogic XLR SoC"
1821 depends on SYS_HAS_CPU_XLR
1822 select CPU_SUPPORTS_32BIT_KERNEL
1823 select CPU_SUPPORTS_64BIT_KERNEL
1824 select CPU_SUPPORTS_HIGHMEM
1825 select CPU_SUPPORTS_HUGEPAGES
1826 select WEAK_ORDERING
1827 select WEAK_REORDERING_BEYOND_LLSC
1828 help
1829 Netlogic Microsystems XLR/XLS processors.
1830
1831config CPU_XLP
1832 bool "Netlogic XLP SoC"
1833 depends on SYS_HAS_CPU_XLP
1834 select CPU_SUPPORTS_32BIT_KERNEL
1835 select CPU_SUPPORTS_64BIT_KERNEL
1836 select CPU_SUPPORTS_HIGHMEM
1837 select WEAK_ORDERING
1838 select WEAK_REORDERING_BEYOND_LLSC
1839 select CPU_HAS_PREFETCH
1840 select CPU_MIPSR2
1841 select CPU_SUPPORTS_HUGEPAGES
1842 select MIPS_ASID_BITS_VARIABLE
1843 help
1844 Netlogic Microsystems XLP processors.
1845endchoice
1846
1847config CPU_MIPS32_3_5_FEATURES
1848 bool "MIPS32 Release 3.5 Features"
1849 depends on SYS_HAS_CPU_MIPS32_R3_5
1850 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_MIPS32_R6 || \
1851 CPU_P5600
1852 help
1853 Choose this option to build a kernel for release 2 or later of the
1854 MIPS32 architecture including features from the 3.5 release such as
1855 support for Enhanced Virtual Addressing (EVA).
1856
1857config CPU_MIPS32_3_5_EVA
1858 bool "Enhanced Virtual Addressing (EVA)"
1859 depends on CPU_MIPS32_3_5_FEATURES
1860 select EVA
1861 default y
1862 help
1863 Choose this option if you want to enable the Enhanced Virtual
1864 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1865 One of its primary benefits is an increase in the maximum size
1866 of lowmem (up to 3GB). If unsure, say 'N' here.
1867
1868config CPU_MIPS32_R5_FEATURES
1869 bool "MIPS32 Release 5 Features"
1870 depends on SYS_HAS_CPU_MIPS32_R5
1871 depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_P5600
1872 help
1873 Choose this option to build a kernel for release 2 or later of the
1874 MIPS32 architecture including features from release 5 such as
1875 support for Extended Physical Addressing (XPA).
1876
1877config CPU_MIPS32_R5_XPA
1878 bool "Extended Physical Addressing (XPA)"
1879 depends on CPU_MIPS32_R5_FEATURES
1880 depends on !EVA
1881 depends on !PAGE_SIZE_4KB
1882 depends on SYS_SUPPORTS_HIGHMEM
1883 select XPA
1884 select HIGHMEM
1885 select PHYS_ADDR_T_64BIT
1886 default n
1887 help
1888 Choose this option if you want to enable the Extended Physical
1889 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1890 benefit is to increase physical addressing equal to or greater
1891 than 40 bits. Note that this has the side effect of turning on
1892 64-bit addressing which in turn makes the PTEs 64-bit in size.
1893 If unsure, say 'N' here.
1894
1895if CPU_LOONGSON2F
1896config CPU_NOP_WORKAROUNDS
1897 bool
1898
1899config CPU_JUMP_WORKAROUNDS
1900 bool
1901
1902config CPU_LOONGSON2F_WORKAROUNDS
1903 bool "Loongson 2F Workarounds"
1904 default y
1905 select CPU_NOP_WORKAROUNDS
1906 select CPU_JUMP_WORKAROUNDS
1907 help
1908 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1909 require workarounds. Without workarounds the system may hang
1910 unexpectedly. For more information please refer to the gas
1911 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1912
1913 Loongson 2F03 and later have fixed these issues and no workarounds
1914 are needed. The workarounds have no significant side effect on them
1915 but may decrease the performance of the system so this option should
1916 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1917 systems.
1918
1919 If unsure, please say Y.
1920endif # CPU_LOONGSON2F
1921
1922config SYS_SUPPORTS_ZBOOT
1923 bool
1924 select HAVE_KERNEL_GZIP
1925 select HAVE_KERNEL_BZIP2
1926 select HAVE_KERNEL_LZ4
1927 select HAVE_KERNEL_LZMA
1928 select HAVE_KERNEL_LZO
1929 select HAVE_KERNEL_XZ
1930 select HAVE_KERNEL_ZSTD
1931
1932config SYS_SUPPORTS_ZBOOT_UART16550
1933 bool
1934 select SYS_SUPPORTS_ZBOOT
1935
1936config SYS_SUPPORTS_ZBOOT_UART_PROM
1937 bool
1938 select SYS_SUPPORTS_ZBOOT
1939
1940config CPU_LOONGSON2EF
1941 bool
1942 select CPU_SUPPORTS_32BIT_KERNEL
1943 select CPU_SUPPORTS_64BIT_KERNEL
1944 select CPU_SUPPORTS_HIGHMEM
1945 select CPU_SUPPORTS_HUGEPAGES
1946 select ARCH_HAS_PHYS_TO_DMA
1947
1948config CPU_LOONGSON32
1949 bool
1950 select CPU_MIPS32
1951 select CPU_MIPSR2
1952 select CPU_HAS_PREFETCH
1953 select CPU_SUPPORTS_32BIT_KERNEL
1954 select CPU_SUPPORTS_HIGHMEM
1955 select CPU_SUPPORTS_CPUFREQ
1956
1957config CPU_BMIPS32_3300
1958 select SMP_UP if SMP
1959 bool
1960
1961config CPU_BMIPS4350
1962 bool
1963 select SYS_SUPPORTS_SMP
1964 select SYS_SUPPORTS_HOTPLUG_CPU
1965
1966config CPU_BMIPS4380
1967 bool
1968 select MIPS_L1_CACHE_SHIFT_6
1969 select SYS_SUPPORTS_SMP
1970 select SYS_SUPPORTS_HOTPLUG_CPU
1971 select CPU_HAS_RIXI
1972
1973config CPU_BMIPS5000
1974 bool
1975 select MIPS_CPU_SCACHE
1976 select MIPS_L1_CACHE_SHIFT_7
1977 select SYS_SUPPORTS_SMP
1978 select SYS_SUPPORTS_HOTPLUG_CPU
1979 select CPU_HAS_RIXI
1980
1981config SYS_HAS_CPU_LOONGSON64
1982 bool
1983 select CPU_SUPPORTS_CPUFREQ
1984 select CPU_HAS_RIXI
1985
1986config SYS_HAS_CPU_LOONGSON2E
1987 bool
1988
1989config SYS_HAS_CPU_LOONGSON2F
1990 bool
1991 select CPU_SUPPORTS_CPUFREQ
1992 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1993
1994config SYS_HAS_CPU_LOONGSON1B
1995 bool
1996
1997config SYS_HAS_CPU_LOONGSON1C
1998 bool
1999
2000config SYS_HAS_CPU_MIPS32_R1
2001 bool
2002
2003config SYS_HAS_CPU_MIPS32_R2
2004 bool
2005
2006config SYS_HAS_CPU_MIPS32_R3_5
2007 bool
2008
2009config SYS_HAS_CPU_MIPS32_R5
2010 bool
2011 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2012
2013config SYS_HAS_CPU_MIPS32_R6
2014 bool
2015 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2016
2017config SYS_HAS_CPU_MIPS64_R1
2018 bool
2019
2020config SYS_HAS_CPU_MIPS64_R2
2021 bool
2022
2023config SYS_HAS_CPU_MIPS64_R6
2024 bool
2025 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2026
2027config SYS_HAS_CPU_P5600
2028 bool
2029 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2030
2031config SYS_HAS_CPU_R3000
2032 bool
2033
2034config SYS_HAS_CPU_TX39XX
2035 bool
2036
2037config SYS_HAS_CPU_VR41XX
2038 bool
2039
2040config SYS_HAS_CPU_R4300
2041 bool
2042
2043config SYS_HAS_CPU_R4X00
2044 bool
2045
2046config SYS_HAS_CPU_TX49XX
2047 bool
2048
2049config SYS_HAS_CPU_R5000
2050 bool
2051
2052config SYS_HAS_CPU_R5500
2053 bool
2054
2055config SYS_HAS_CPU_NEVADA
2056 bool
2057
2058config SYS_HAS_CPU_R10000
2059 bool
2060 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2061
2062config SYS_HAS_CPU_RM7000
2063 bool
2064
2065config SYS_HAS_CPU_SB1
2066 bool
2067
2068config SYS_HAS_CPU_CAVIUM_OCTEON
2069 bool
2070
2071config SYS_HAS_CPU_BMIPS
2072 bool
2073
2074config SYS_HAS_CPU_BMIPS32_3300
2075 bool
2076 select SYS_HAS_CPU_BMIPS
2077
2078config SYS_HAS_CPU_BMIPS4350
2079 bool
2080 select SYS_HAS_CPU_BMIPS
2081
2082config SYS_HAS_CPU_BMIPS4380
2083 bool
2084 select SYS_HAS_CPU_BMIPS
2085
2086config SYS_HAS_CPU_BMIPS5000
2087 bool
2088 select SYS_HAS_CPU_BMIPS
2089 select ARCH_HAS_SYNC_DMA_FOR_CPU
2090
2091config SYS_HAS_CPU_XLR
2092 bool
2093
2094config SYS_HAS_CPU_XLP
2095 bool
2096
2097#
2098# CPU may reorder R->R, R->W, W->R, W->W
2099# Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2100#
2101config WEAK_ORDERING
2102 bool
2103
2104#
2105# CPU may reorder reads and writes beyond LL/SC
2106# CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2107#
2108config WEAK_REORDERING_BEYOND_LLSC
2109 bool
2110endmenu
2111
2112#
2113# These two indicate any level of the MIPS32 and MIPS64 architecture
2114#
2115config CPU_MIPS32
2116 bool
2117 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R5 || \
2118 CPU_MIPS32_R6 || CPU_P5600
2119
2120config CPU_MIPS64
2121 bool
2122 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R5 || \
2123 CPU_MIPS64_R6 || CPU_LOONGSON64 || CPU_CAVIUM_OCTEON
2124
2125#
2126# These indicate the revision of the architecture
2127#
2128config CPU_MIPSR1
2129 bool
2130 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2131
2132config CPU_MIPSR2
2133 bool
2134 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2135 select CPU_HAS_RIXI
2136 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2137 select MIPS_SPRAM
2138
2139config CPU_MIPSR5
2140 bool
2141 default y if CPU_MIPS32_R5 || CPU_MIPS64_R5 || CPU_P5600
2142 select CPU_HAS_RIXI
2143 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2144 select MIPS_SPRAM
2145
2146config CPU_MIPSR6
2147 bool
2148 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2149 select CPU_HAS_RIXI
2150 select CPU_HAS_DIEI if !CPU_DIEI_BROKEN
2151 select HAVE_ARCH_BITREVERSE
2152 select MIPS_ASID_BITS_VARIABLE
2153 select MIPS_CRC_SUPPORT
2154 select MIPS_SPRAM
2155
2156config TARGET_ISA_REV
2157 int
2158 default 1 if CPU_MIPSR1
2159 default 2 if CPU_MIPSR2
2160 default 5 if CPU_MIPSR5
2161 default 6 if CPU_MIPSR6
2162 default 0
2163 help
2164 Reflects the ISA revision being targeted by the kernel build. This
2165 is effectively the Kconfig equivalent of MIPS_ISA_REV.
2166
2167config EVA
2168 bool
2169
2170config XPA
2171 bool
2172
2173config SYS_SUPPORTS_32BIT_KERNEL
2174 bool
2175config SYS_SUPPORTS_64BIT_KERNEL
2176 bool
2177config CPU_SUPPORTS_32BIT_KERNEL
2178 bool
2179config CPU_SUPPORTS_64BIT_KERNEL
2180 bool
2181config CPU_SUPPORTS_CPUFREQ
2182 bool
2183config CPU_SUPPORTS_ADDRWINCFG
2184 bool
2185config CPU_SUPPORTS_HUGEPAGES
2186 bool
2187 depends on !(32BIT && (ARCH_PHYS_ADDR_T_64BIT || EVA))
2188config MIPS_PGD_C0_CONTEXT
2189 bool
2190 depends on 64BIT
2191 default y if (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2192
2193#
2194# Set to y for ptrace access to watch registers.
2195#
2196config HARDWARE_WATCHPOINTS
2197 bool
2198 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2199
2200menu "Kernel type"
2201
2202choice
2203 prompt "Kernel code model"
2204 help
2205 You should only select this option if you have a workload that
2206 actually benefits from 64-bit processing or if your machine has
2207 large memory. You will only be presented a single option in this
2208 menu if your system does not support both 32-bit and 64-bit kernels.
2209
2210config 32BIT
2211 bool "32-bit kernel"
2212 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2213 select TRAD_SIGNALS
2214 help
2215 Select this option if you want to build a 32-bit kernel.
2216
2217config 64BIT
2218 bool "64-bit kernel"
2219 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2220 help
2221 Select this option if you want to build a 64-bit kernel.
2222
2223endchoice
2224
2225config MIPS_VA_BITS_48
2226 bool "48 bits virtual memory"
2227 depends on 64BIT
2228 help
2229 Support a maximum at least 48 bits of application virtual
2230 memory. Default is 40 bits or less, depending on the CPU.
2231 For page sizes 16k and above, this option results in a small
2232 memory overhead for page tables. For 4k page size, a fourth
2233 level of page tables is added which imposes both a memory
2234 overhead as well as slower TLB fault handling.
2235
2236 If unsure, say N.
2237
2238choice
2239 prompt "Kernel page size"
2240 default PAGE_SIZE_4KB
2241
2242config PAGE_SIZE_4KB
2243 bool "4kB"
2244 depends on !CPU_LOONGSON2EF && !CPU_LOONGSON64
2245 help
2246 This option select the standard 4kB Linux page size. On some
2247 R3000-family processors this is the only available page size. Using
2248 4kB page size will minimize memory consumption and is therefore
2249 recommended for low memory systems.
2250
2251config PAGE_SIZE_8KB
2252 bool "8kB"
2253 depends on CPU_CAVIUM_OCTEON
2254 depends on !MIPS_VA_BITS_48
2255 help
2256 Using 8kB page size will result in higher performance kernel at
2257 the price of higher memory consumption. This option is available
2258 only on cnMIPS processors. Note that you will need a suitable Linux
2259 distribution to support this.
2260
2261config PAGE_SIZE_16KB
2262 bool "16kB"
2263 depends on !CPU_R3000 && !CPU_TX39XX
2264 help
2265 Using 16kB page size will result in higher performance kernel at
2266 the price of higher memory consumption. This option is available on
2267 all non-R3000 family processors. Note that you will need a suitable
2268 Linux distribution to support this.
2269
2270config PAGE_SIZE_32KB
2271 bool "32kB"
2272 depends on CPU_CAVIUM_OCTEON
2273 depends on !MIPS_VA_BITS_48
2274 help
2275 Using 32kB page size will result in higher performance kernel at
2276 the price of higher memory consumption. This option is available
2277 only on cnMIPS cores. Note that you will need a suitable Linux
2278 distribution to support this.
2279
2280config PAGE_SIZE_64KB
2281 bool "64kB"
2282 depends on !CPU_R3000 && !CPU_TX39XX
2283 help
2284 Using 64kB page size will result in higher performance kernel at
2285 the price of higher memory consumption. This option is available on
2286 all non-R3000 family processor. Not that at the time of this
2287 writing this option is still high experimental.
2288
2289endchoice
2290
2291config FORCE_MAX_ZONEORDER
2292 int "Maximum zone order"
2293 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2294 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2295 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2296 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2297 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2298 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2299 range 0 64
2300 default "11"
2301 help
2302 The kernel memory allocator divides physically contiguous memory
2303 blocks into "zones", where each zone is a power of two number of
2304 pages. This option selects the largest power of two that the kernel
2305 keeps in the memory allocator. If you need to allocate very large
2306 blocks of physically contiguous memory, then you may need to
2307 increase this value.
2308
2309 This config option is actually maximum order plus one. For example,
2310 a value of 11 means that the largest free memory block is 2^10 pages.
2311
2312 The page size is not necessarily 4KB. Keep this in mind
2313 when choosing a value for this option.
2314
2315config BOARD_SCACHE
2316 bool
2317
2318config IP22_CPU_SCACHE
2319 bool
2320 select BOARD_SCACHE
2321
2322#
2323# Support for a MIPS32 / MIPS64 style S-caches
2324#
2325config MIPS_CPU_SCACHE
2326 bool
2327 select BOARD_SCACHE
2328
2329config R5000_CPU_SCACHE
2330 bool
2331 select BOARD_SCACHE
2332
2333config RM7000_CPU_SCACHE
2334 bool
2335 select BOARD_SCACHE
2336
2337config SIBYTE_DMA_PAGEOPS
2338 bool "Use DMA to clear/copy pages"
2339 depends on CPU_SB1
2340 help
2341 Instead of using the CPU to zero and copy pages, use a Data Mover
2342 channel. These DMA channels are otherwise unused by the standard
2343 SiByte Linux port. Seems to give a small performance benefit.
2344
2345config CPU_HAS_PREFETCH
2346 bool
2347
2348config CPU_GENERIC_DUMP_TLB
2349 bool
2350 default y if !(CPU_R3000 || CPU_TX39XX)
2351
2352config MIPS_FP_SUPPORT
2353 bool "Floating Point support" if EXPERT
2354 default y
2355 help
2356 Select y to include support for floating point in the kernel
2357 including initialization of FPU hardware, FP context save & restore
2358 and emulation of an FPU where necessary. Without this support any
2359 userland program attempting to use floating point instructions will
2360 receive a SIGILL.
2361
2362 If you know that your userland will not attempt to use floating point
2363 instructions then you can say n here to shrink the kernel a little.
2364
2365 If unsure, say y.
2366
2367config CPU_R2300_FPU
2368 bool
2369 depends on MIPS_FP_SUPPORT
2370 default y if CPU_R3000 || CPU_TX39XX
2371
2372config CPU_R3K_TLB
2373 bool
2374
2375config CPU_R4K_FPU
2376 bool
2377 depends on MIPS_FP_SUPPORT
2378 default y if !CPU_R2300_FPU
2379
2380config CPU_R4K_CACHE_TLB
2381 bool
2382 default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON)
2383
2384config MIPS_MT_SMP
2385 bool "MIPS MT SMP support (1 TC on each available VPE)"
2386 default y
2387 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2388 select CPU_MIPSR2_IRQ_VI
2389 select CPU_MIPSR2_IRQ_EI
2390 select SYNC_R4K
2391 select MIPS_MT
2392 select SMP
2393 select SMP_UP
2394 select SYS_SUPPORTS_SMP
2395 select SYS_SUPPORTS_SCHED_SMT
2396 select MIPS_PERF_SHARED_TC_COUNTERS
2397 help
2398 This is a kernel model which is known as SMVP. This is supported
2399 on cores with the MT ASE and uses the available VPEs to implement
2400 virtual processors which supports SMP. This is equivalent to the
2401 Intel Hyperthreading feature. For further information go to
2402 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2403
2404config MIPS_MT
2405 bool
2406
2407config SCHED_SMT
2408 bool "SMT (multithreading) scheduler support"
2409 depends on SYS_SUPPORTS_SCHED_SMT
2410 default n
2411 help
2412 SMT scheduler support improves the CPU scheduler's decision making
2413 when dealing with MIPS MT enabled cores at a cost of slightly
2414 increased overhead in some places. If unsure say N here.
2415
2416config SYS_SUPPORTS_SCHED_SMT
2417 bool
2418
2419config SYS_SUPPORTS_MULTITHREADING
2420 bool
2421
2422config MIPS_MT_FPAFF
2423 bool "Dynamic FPU affinity for FP-intensive threads"
2424 default y
2425 depends on MIPS_MT_SMP
2426
2427config MIPSR2_TO_R6_EMULATOR
2428 bool "MIPS R2-to-R6 emulator"
2429 depends on CPU_MIPSR6
2430 depends on MIPS_FP_SUPPORT
2431 default y
2432 help
2433 Choose this option if you want to run non-R6 MIPS userland code.
2434 Even if you say 'Y' here, the emulator will still be disabled by
2435 default. You can enable it using the 'mipsr2emu' kernel option.
2436 The only reason this is a build-time option is to save ~14K from the
2437 final kernel image.
2438
2439config SYS_SUPPORTS_VPE_LOADER
2440 bool
2441 depends on SYS_SUPPORTS_MULTITHREADING
2442 help
2443 Indicates that the platform supports the VPE loader, and provides
2444 physical_memsize.
2445
2446config MIPS_VPE_LOADER
2447 bool "VPE loader support."
2448 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2449 select CPU_MIPSR2_IRQ_VI
2450 select CPU_MIPSR2_IRQ_EI
2451 select MIPS_MT
2452 help
2453 Includes a loader for loading an elf relocatable object
2454 onto another VPE and running it.
2455
2456config MIPS_VPE_LOADER_CMP
2457 bool
2458 default "y"
2459 depends on MIPS_VPE_LOADER && MIPS_CMP
2460
2461config MIPS_VPE_LOADER_MT
2462 bool
2463 default "y"
2464 depends on MIPS_VPE_LOADER && !MIPS_CMP
2465
2466config MIPS_VPE_LOADER_TOM
2467 bool "Load VPE program into memory hidden from linux"
2468 depends on MIPS_VPE_LOADER
2469 default y
2470 help
2471 The loader can use memory that is present but has been hidden from
2472 Linux using the kernel command line option "mem=xxMB". It's up to
2473 you to ensure the amount you put in the option and the space your
2474 program requires is less or equal to the amount physically present.
2475
2476config MIPS_VPE_APSP_API
2477 bool "Enable support for AP/SP API (RTLX)"
2478 depends on MIPS_VPE_LOADER
2479
2480config MIPS_VPE_APSP_API_CMP
2481 bool
2482 default "y"
2483 depends on MIPS_VPE_APSP_API && MIPS_CMP
2484
2485config MIPS_VPE_APSP_API_MT
2486 bool
2487 default "y"
2488 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2489
2490config MIPS_CMP
2491 bool "MIPS CMP framework support (DEPRECATED)"
2492 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2493 select SMP
2494 select SYNC_R4K
2495 select SYS_SUPPORTS_SMP
2496 select WEAK_ORDERING
2497 default n
2498 help
2499 Select this if you are using a bootloader which implements the "CMP
2500 framework" protocol (ie. YAMON) and want your kernel to make use of
2501 its ability to start secondary CPUs.
2502
2503 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2504 instead of this.
2505
2506config MIPS_CPS
2507 bool "MIPS Coherent Processing System support"
2508 depends on SYS_SUPPORTS_MIPS_CPS
2509 select MIPS_CM
2510 select MIPS_CPS_PM if HOTPLUG_CPU
2511 select SMP
2512 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2513 select SYS_SUPPORTS_HOTPLUG_CPU
2514 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2515 select SYS_SUPPORTS_SMP
2516 select WEAK_ORDERING
2517 select GENERIC_IRQ_MIGRATION if HOTPLUG_CPU
2518 help
2519 Select this if you wish to run an SMP kernel across multiple cores
2520 within a MIPS Coherent Processing System. When this option is
2521 enabled the kernel will probe for other cores and boot them with
2522 no external assistance. It is safe to enable this when hardware
2523 support is unavailable.
2524
2525config MIPS_CPS_PM
2526 depends on MIPS_CPS
2527 bool
2528
2529config MIPS_CM
2530 bool
2531 select MIPS_CPC
2532
2533config MIPS_CPC
2534 bool
2535
2536config SB1_PASS_2_WORKAROUNDS
2537 bool
2538 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2539 default y
2540
2541config SB1_PASS_2_1_WORKAROUNDS
2542 bool
2543 depends on CPU_SB1 && CPU_SB1_PASS_2
2544 default y
2545
2546choice
2547 prompt "SmartMIPS or microMIPS ASE support"
2548
2549config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2550 bool "None"
2551 help
2552 Select this if you want neither microMIPS nor SmartMIPS support
2553
2554config CPU_HAS_SMARTMIPS
2555 depends on SYS_SUPPORTS_SMARTMIPS
2556 bool "SmartMIPS"
2557 help
2558 SmartMIPS is a extension of the MIPS32 architecture aimed at
2559 increased security at both hardware and software level for
2560 smartcards. Enabling this option will allow proper use of the
2561 SmartMIPS instructions by Linux applications. However a kernel with
2562 this option will not work on a MIPS core without SmartMIPS core. If
2563 you don't know you probably don't have SmartMIPS and should say N
2564 here.
2565
2566config CPU_MICROMIPS
2567 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2568 bool "microMIPS"
2569 help
2570 When this option is enabled the kernel will be built using the
2571 microMIPS ISA
2572
2573endchoice
2574
2575config CPU_HAS_MSA
2576 bool "Support for the MIPS SIMD Architecture"
2577 depends on CPU_SUPPORTS_MSA
2578 depends on MIPS_FP_SUPPORT
2579 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2580 help
2581 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2582 and a set of SIMD instructions to operate on them. When this option
2583 is enabled the kernel will support allocating & switching MSA
2584 vector register contexts. If you know that your kernel will only be
2585 running on CPUs which do not support MSA or that your userland will
2586 not be making use of it then you may wish to say N here to reduce
2587 the size & complexity of your kernel.
2588
2589 If unsure, say Y.
2590
2591config CPU_HAS_WB
2592 bool
2593
2594config XKS01
2595 bool
2596
2597config CPU_HAS_DIEI
2598 depends on !CPU_DIEI_BROKEN
2599 bool
2600
2601config CPU_DIEI_BROKEN
2602 bool
2603
2604config CPU_HAS_RIXI
2605 bool
2606
2607config CPU_NO_LOAD_STORE_LR
2608 bool
2609 help
2610 CPU lacks support for unaligned load and store instructions:
2611 LWL, LWR, SWL, SWR (Load/store word left/right).
2612 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit
2613 systems).
2614
2615#
2616# Vectored interrupt mode is an R2 feature
2617#
2618config CPU_MIPSR2_IRQ_VI
2619 bool
2620
2621#
2622# Extended interrupt mode is an R2 feature
2623#
2624config CPU_MIPSR2_IRQ_EI
2625 bool
2626
2627config CPU_HAS_SYNC
2628 bool
2629 depends on !CPU_R3000
2630 default y
2631
2632#
2633# CPU non-features
2634#
2635config CPU_DADDI_WORKAROUNDS
2636 bool
2637
2638config CPU_R4000_WORKAROUNDS
2639 bool
2640 select CPU_R4400_WORKAROUNDS
2641
2642config CPU_R4400_WORKAROUNDS
2643 bool
2644
2645config CPU_R4X00_BUGS64
2646 bool
2647 default y if SYS_HAS_CPU_R4X00 && 64BIT && (TARGET_ISA_REV < 1)
2648
2649config MIPS_ASID_SHIFT
2650 int
2651 default 6 if CPU_R3000 || CPU_TX39XX
2652 default 0
2653
2654config MIPS_ASID_BITS
2655 int
2656 default 0 if MIPS_ASID_BITS_VARIABLE
2657 default 6 if CPU_R3000 || CPU_TX39XX
2658 default 8
2659
2660config MIPS_ASID_BITS_VARIABLE
2661 bool
2662
2663config MIPS_CRC_SUPPORT
2664 bool
2665
2666# R4600 erratum. Due to the lack of errata information the exact
2667# technical details aren't known. I've experimentally found that disabling
2668# interrupts during indexed I-cache flushes seems to be sufficient to deal
2669# with the issue.
2670config WAR_R4600_V1_INDEX_ICACHEOP
2671 bool
2672
2673# Pleasures of the R4600 V1.x. Cite from the IDT R4600 V1.7 errata:
2674#
2675# 18. The CACHE instructions Hit_Writeback_Invalidate_D, Hit_Writeback_D,
2676# Hit_Invalidate_D and Create_Dirty_Excl_D should only be
2677# executed if there is no other dcache activity. If the dcache is
2678# accessed for another instruction immediately preceding when these
2679# cache instructions are executing, it is possible that the dcache
2680# tag match outputs used by these cache instructions will be
2681# incorrect. These cache instructions should be preceded by at least
2682# four instructions that are not any kind of load or store
2683# instruction.
2684#
2685# This is not allowed: lw
2686# nop
2687# nop
2688# nop
2689# cache Hit_Writeback_Invalidate_D
2690#
2691# This is allowed: lw
2692# nop
2693# nop
2694# nop
2695# nop
2696# cache Hit_Writeback_Invalidate_D
2697config WAR_R4600_V1_HIT_CACHEOP
2698 bool
2699
2700# Writeback and invalidate the primary cache dcache before DMA.
2701#
2702# R4600 v2.0 bug: "The CACHE instructions Hit_Writeback_Inv_D,
2703# Hit_Writeback_D, Hit_Invalidate_D and Create_Dirty_Exclusive_D will only
2704# operate correctly if the internal data cache refill buffer is empty. These
2705# CACHE instructions should be separated from any potential data cache miss
2706# by a load instruction to an uncached address to empty the response buffer."
2707# (Revision 2.0 device errata from IDT available on https://www.idt.com/
2708# in .pdf format.)
2709config WAR_R4600_V2_HIT_CACHEOP
2710 bool
2711
2712# From TX49/H2 manual: "If the instruction (i.e. CACHE) is issued for
2713# the line which this instruction itself exists, the following
2714# operation is not guaranteed."
2715#
2716# Workaround: do two phase flushing for Index_Invalidate_I
2717config WAR_TX49XX_ICACHE_INDEX_INV
2718 bool
2719
2720# The RM7000 processors and the E9000 cores have a bug (though PMC-Sierra
2721# opposes it being called that) where invalid instructions in the same
2722# I-cache line worth of instructions being fetched may case spurious
2723# exceptions.
2724config WAR_ICACHE_REFILLS
2725 bool
2726
2727# On the R10000 up to version 2.6 (not sure about 2.7) there is a bug that
2728# may cause ll / sc and lld / scd sequences to execute non-atomically.
2729config WAR_R10000_LLSC
2730 bool
2731
2732# 34K core erratum: "Problems Executing the TLBR Instruction"
2733config WAR_MIPS34K_MISSED_ITLB
2734 bool
2735
2736#
2737# - Highmem only makes sense for the 32-bit kernel.
2738# - The current highmem code will only work properly on physically indexed
2739# caches such as R3000, SB1, R7000 or those that look like they're virtually
2740# indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2741# moment we protect the user and offer the highmem option only on machines
2742# where it's known to be safe. This will not offer highmem on a few systems
2743# such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2744# indexed CPUs but we're playing safe.
2745# - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2746# know they might have memory configurations that could make use of highmem
2747# support.
2748#
2749config HIGHMEM
2750 bool "High Memory Support"
2751 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2752 select KMAP_LOCAL
2753
2754config CPU_SUPPORTS_HIGHMEM
2755 bool
2756
2757config SYS_SUPPORTS_HIGHMEM
2758 bool
2759
2760config SYS_SUPPORTS_SMARTMIPS
2761 bool
2762
2763config SYS_SUPPORTS_MICROMIPS
2764 bool
2765
2766config SYS_SUPPORTS_MIPS16
2767 bool
2768 help
2769 This option must be set if a kernel might be executed on a MIPS16-
2770 enabled CPU even if MIPS16 is not actually being used. In other
2771 words, it makes the kernel MIPS16-tolerant.
2772
2773config CPU_SUPPORTS_MSA
2774 bool
2775
2776config ARCH_FLATMEM_ENABLE
2777 def_bool y
2778 depends on !NUMA && !CPU_LOONGSON2EF
2779
2780config ARCH_SPARSEMEM_ENABLE
2781 bool
2782 select SPARSEMEM_STATIC if !SGI_IP27
2783
2784config NUMA
2785 bool "NUMA Support"
2786 depends on SYS_SUPPORTS_NUMA
2787 select SMP
2788 help
2789 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2790 Access). This option improves performance on systems with more
2791 than two nodes; on two node systems it is generally better to
2792 leave it disabled; on single node systems leave this option
2793 disabled.
2794
2795config SYS_SUPPORTS_NUMA
2796 bool
2797
2798config HAVE_SETUP_PER_CPU_AREA
2799 def_bool y
2800 depends on NUMA
2801
2802config NEED_PER_CPU_EMBED_FIRST_CHUNK
2803 def_bool y
2804 depends on NUMA
2805
2806config RELOCATABLE
2807 bool "Relocatable kernel"
2808 depends on SYS_SUPPORTS_RELOCATABLE
2809 depends on CPU_MIPS32_R2 || CPU_MIPS64_R2 || \
2810 CPU_MIPS32_R5 || CPU_MIPS64_R5 || \
2811 CPU_MIPS32_R6 || CPU_MIPS64_R6 || \
2812 CPU_P5600 || CAVIUM_OCTEON_SOC || \
2813 CPU_LOONGSON64
2814 help
2815 This builds a kernel image that retains relocation information
2816 so it can be loaded someplace besides the default 1MB.
2817 The relocations make the kernel binary about 15% larger,
2818 but are discarded at runtime
2819
2820config RELOCATION_TABLE_SIZE
2821 hex "Relocation table size"
2822 depends on RELOCATABLE
2823 range 0x0 0x01000000
2824 default "0x00200000" if CPU_LOONGSON64
2825 default "0x00100000"
2826 help
2827 A table of relocation data will be appended to the kernel binary
2828 and parsed at boot to fix up the relocated kernel.
2829
2830 This option allows the amount of space reserved for the table to be
2831 adjusted, although the default of 1Mb should be ok in most cases.
2832
2833 The build will fail and a valid size suggested if this is too small.
2834
2835 If unsure, leave at the default value.
2836
2837config RANDOMIZE_BASE
2838 bool "Randomize the address of the kernel image"
2839 depends on RELOCATABLE
2840 help
2841 Randomizes the physical and virtual address at which the
2842 kernel image is loaded, as a security feature that
2843 deters exploit attempts relying on knowledge of the location
2844 of kernel internals.
2845
2846 Entropy is generated using any coprocessor 0 registers available.
2847
2848 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2849
2850 If unsure, say N.
2851
2852config RANDOMIZE_BASE_MAX_OFFSET
2853 hex "Maximum kASLR offset" if EXPERT
2854 depends on RANDOMIZE_BASE
2855 range 0x0 0x40000000 if EVA || 64BIT
2856 range 0x0 0x08000000
2857 default "0x01000000"
2858 help
2859 When kASLR is active, this provides the maximum offset that will
2860 be applied to the kernel image. It should be set according to the
2861 amount of physical RAM available in the target system minus
2862 PHYSICAL_START and must be a power of 2.
2863
2864 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2865 EVA or 64-bit. The default is 16Mb.
2866
2867config NODES_SHIFT
2868 int
2869 default "6"
2870 depends on NEED_MULTIPLE_NODES
2871
2872config HW_PERF_EVENTS
2873 bool "Enable hardware performance counter support for perf events"
2874 depends on PERF_EVENTS && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON64)
2875 default y
2876 help
2877 Enable hardware performance counter support for perf events. If
2878 disabled, perf events will use software events only.
2879
2880config DMI
2881 bool "Enable DMI scanning"
2882 depends on MACH_LOONGSON64
2883 select DMI_SCAN_MACHINE_NON_EFI_FALLBACK
2884 default y
2885 help
2886 Enabled scanning of DMI to identify machine quirks. Say Y
2887 here unless you have verified that your setup is not
2888 affected by entries in the DMI blacklist. Required by PNP
2889 BIOS code.
2890
2891config SMP
2892 bool "Multi-Processing support"
2893 depends on SYS_SUPPORTS_SMP
2894 help
2895 This enables support for systems with more than one CPU. If you have
2896 a system with only one CPU, say N. If you have a system with more
2897 than one CPU, say Y.
2898
2899 If you say N here, the kernel will run on uni- and multiprocessor
2900 machines, but will use only one CPU of a multiprocessor machine. If
2901 you say Y here, the kernel will run on many, but not all,
2902 uniprocessor machines. On a uniprocessor machine, the kernel
2903 will run faster if you say N here.
2904
2905 People using multiprocessor machines who say Y here should also say
2906 Y to "Enhanced Real Time Clock Support", below.
2907
2908 See also the SMP-HOWTO available at
2909 <https://www.tldp.org/docs.html#howto>.
2910
2911 If you don't know what to do here, say N.
2912
2913config HOTPLUG_CPU
2914 bool "Support for hot-pluggable CPUs"
2915 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2916 help
2917 Say Y here to allow turning CPUs off and on. CPUs can be
2918 controlled through /sys/devices/system/cpu.
2919 (Note: power management support will enable this option
2920 automatically on SMP systems. )
2921 Say N if you want to disable CPU hotplug.
2922
2923config SMP_UP
2924 bool
2925
2926config SYS_SUPPORTS_MIPS_CMP
2927 bool
2928
2929config SYS_SUPPORTS_MIPS_CPS
2930 bool
2931
2932config SYS_SUPPORTS_SMP
2933 bool
2934
2935config NR_CPUS_DEFAULT_4
2936 bool
2937
2938config NR_CPUS_DEFAULT_8
2939 bool
2940
2941config NR_CPUS_DEFAULT_16
2942 bool
2943
2944config NR_CPUS_DEFAULT_32
2945 bool
2946
2947config NR_CPUS_DEFAULT_64
2948 bool
2949
2950config NR_CPUS
2951 int "Maximum number of CPUs (2-256)"
2952 range 2 256
2953 depends on SMP
2954 default "4" if NR_CPUS_DEFAULT_4
2955 default "8" if NR_CPUS_DEFAULT_8
2956 default "16" if NR_CPUS_DEFAULT_16
2957 default "32" if NR_CPUS_DEFAULT_32
2958 default "64" if NR_CPUS_DEFAULT_64
2959 help
2960 This allows you to specify the maximum number of CPUs which this
2961 kernel will support. The maximum supported value is 32 for 32-bit
2962 kernel and 64 for 64-bit kernels; the minimum value which makes
2963 sense is 1 for Qemu (useful only for kernel debugging purposes)
2964 and 2 for all others.
2965
2966 This is purely to save memory - each supported CPU adds
2967 approximately eight kilobytes to the kernel image. For best
2968 performance should round up your number of processors to the next
2969 power of two.
2970
2971config MIPS_PERF_SHARED_TC_COUNTERS
2972 bool
2973
2974config MIPS_NR_CPU_NR_MAP_1024
2975 bool
2976
2977config MIPS_NR_CPU_NR_MAP
2978 int
2979 depends on SMP
2980 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2981 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2982
2983#
2984# Timer Interrupt Frequency Configuration
2985#
2986
2987choice
2988 prompt "Timer frequency"
2989 default HZ_250
2990 help
2991 Allows the configuration of the timer frequency.
2992
2993 config HZ_24
2994 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2995
2996 config HZ_48
2997 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2998
2999 config HZ_100
3000 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
3001
3002 config HZ_128
3003 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
3004
3005 config HZ_250
3006 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
3007
3008 config HZ_256
3009 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
3010
3011 config HZ_1000
3012 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
3013
3014 config HZ_1024
3015 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
3016
3017endchoice
3018
3019config SYS_SUPPORTS_24HZ
3020 bool
3021
3022config SYS_SUPPORTS_48HZ
3023 bool
3024
3025config SYS_SUPPORTS_100HZ
3026 bool
3027
3028config SYS_SUPPORTS_128HZ
3029 bool
3030
3031config SYS_SUPPORTS_250HZ
3032 bool
3033
3034config SYS_SUPPORTS_256HZ
3035 bool
3036
3037config SYS_SUPPORTS_1000HZ
3038 bool
3039
3040config SYS_SUPPORTS_1024HZ
3041 bool
3042
3043config SYS_SUPPORTS_ARBIT_HZ
3044 bool
3045 default y if !SYS_SUPPORTS_24HZ && \
3046 !SYS_SUPPORTS_48HZ && \
3047 !SYS_SUPPORTS_100HZ && \
3048 !SYS_SUPPORTS_128HZ && \
3049 !SYS_SUPPORTS_250HZ && \
3050 !SYS_SUPPORTS_256HZ && \
3051 !SYS_SUPPORTS_1000HZ && \
3052 !SYS_SUPPORTS_1024HZ
3053
3054config HZ
3055 int
3056 default 24 if HZ_24
3057 default 48 if HZ_48
3058 default 100 if HZ_100
3059 default 128 if HZ_128
3060 default 250 if HZ_250
3061 default 256 if HZ_256
3062 default 1000 if HZ_1000
3063 default 1024 if HZ_1024
3064
3065config SCHED_HRTICK
3066 def_bool HIGH_RES_TIMERS
3067
3068config KEXEC
3069 bool "Kexec system call"
3070 select KEXEC_CORE
3071 help
3072 kexec is a system call that implements the ability to shutdown your
3073 current kernel, and to start another kernel. It is like a reboot
3074 but it is independent of the system firmware. And like a reboot
3075 you can start any kernel with it, not just Linux.
3076
3077 The name comes from the similarity to the exec system call.
3078
3079 It is an ongoing process to be certain the hardware in a machine
3080 is properly shutdown, so do not be surprised if this code does not
3081 initially work for you. As of this writing the exact hardware
3082 interface is strongly in flux, so no good recommendation can be
3083 made.
3084
3085config CRASH_DUMP
3086 bool "Kernel crash dumps"
3087 help
3088 Generate crash dump after being started by kexec.
3089 This should be normally only set in special crash dump kernels
3090 which are loaded in the main kernel with kexec-tools into
3091 a specially reserved region and then later executed after
3092 a crash by kdump/kexec. The crash dump kernel must be compiled
3093 to a memory address not used by the main kernel or firmware using
3094 PHYSICAL_START.
3095
3096config PHYSICAL_START
3097 hex "Physical address where the kernel is loaded"
3098 default "0xffffffff84000000"
3099 depends on CRASH_DUMP
3100 help
3101 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
3102 If you plan to use kernel for capturing the crash dump change
3103 this value to start of the reserved region (the "X" value as
3104 specified in the "crashkernel=YM@XM" command line boot parameter
3105 passed to the panic-ed kernel).
3106
3107config MIPS_O32_FP64_SUPPORT
3108 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
3109 depends on 32BIT || MIPS32_O32
3110 help
3111 When this is enabled, the kernel will support use of 64-bit floating
3112 point registers with binaries using the O32 ABI along with the
3113 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
3114 32-bit MIPS systems this support is at the cost of increasing the
3115 size and complexity of the compiled FPU emulator. Thus if you are
3116 running a MIPS32 system and know that none of your userland binaries
3117 will require 64-bit floating point, you may wish to reduce the size
3118 of your kernel & potentially improve FP emulation performance by
3119 saying N here.
3120
3121 Although binutils currently supports use of this flag the details
3122 concerning its effect upon the O32 ABI in userland are still being
3123 worked on. In order to avoid userland becoming dependent upon current
3124 behaviour before the details have been finalised, this option should
3125 be considered experimental and only enabled by those working upon
3126 said details.
3127
3128 If unsure, say N.
3129
3130config USE_OF
3131 bool
3132 select OF
3133 select OF_EARLY_FLATTREE
3134 select IRQ_DOMAIN
3135
3136config UHI_BOOT
3137 bool
3138
3139config BUILTIN_DTB
3140 bool
3141
3142choice
3143 prompt "Kernel appended dtb support" if USE_OF
3144 default MIPS_NO_APPENDED_DTB
3145
3146 config MIPS_NO_APPENDED_DTB
3147 bool "None"
3148 help
3149 Do not enable appended dtb support.
3150
3151 config MIPS_ELF_APPENDED_DTB
3152 bool "vmlinux"
3153 help
3154 With this option, the boot code will look for a device tree binary
3155 DTB) included in the vmlinux ELF section .appended_dtb. By default
3156 it is empty and the DTB can be appended using binutils command
3157 objcopy:
3158
3159 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
3160
3161 This is meant as a backward compatibility convenience for those
3162 systems with a bootloader that can't be upgraded to accommodate
3163 the documented boot protocol using a device tree.
3164
3165 config MIPS_RAW_APPENDED_DTB
3166 bool "vmlinux.bin or vmlinuz.bin"
3167 help
3168 With this option, the boot code will look for a device tree binary
3169 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
3170 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
3171
3172 This is meant as a backward compatibility convenience for those
3173 systems with a bootloader that can't be upgraded to accommodate
3174 the documented boot protocol using a device tree.
3175
3176 Beware that there is very little in terms of protection against
3177 this option being confused by leftover garbage in memory that might
3178 look like a DTB header after a reboot if no actual DTB is appended
3179 to vmlinux.bin. Do not leave this option active in a production kernel
3180 if you don't intend to always append a DTB.
3181endchoice
3182
3183choice
3184 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
3185 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
3186 !MACH_LOONGSON64 && !MIPS_MALTA && \
3187 !CAVIUM_OCTEON_SOC
3188 default MIPS_CMDLINE_FROM_BOOTLOADER
3189
3190 config MIPS_CMDLINE_FROM_DTB
3191 depends on USE_OF
3192 bool "Dtb kernel arguments if available"
3193
3194 config MIPS_CMDLINE_DTB_EXTEND
3195 depends on USE_OF
3196 bool "Extend dtb kernel arguments with bootloader arguments"
3197
3198 config MIPS_CMDLINE_FROM_BOOTLOADER
3199 bool "Bootloader kernel arguments if available"
3200
3201 config MIPS_CMDLINE_BUILTIN_EXTEND
3202 depends on CMDLINE_BOOL
3203 bool "Extend builtin kernel arguments with bootloader arguments"
3204endchoice
3205
3206endmenu
3207
3208config LOCKDEP_SUPPORT
3209 bool
3210 default y
3211
3212config STACKTRACE_SUPPORT
3213 bool
3214 default y
3215
3216config PGTABLE_LEVELS
3217 int
3218 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3219 default 3 if 64BIT && !PAGE_SIZE_64KB
3220 default 2
3221
3222config MIPS_AUTO_PFN_OFFSET
3223 bool
3224
3225menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3226
3227config PCI_DRIVERS_GENERIC
3228 select PCI_DOMAINS_GENERIC if PCI
3229 bool
3230
3231config PCI_DRIVERS_LEGACY
3232 def_bool !PCI_DRIVERS_GENERIC
3233 select NO_GENERIC_PCI_IOPORT_MAP
3234 select PCI_DOMAINS if PCI
3235
3236#
3237# ISA support is now enabled via select. Too many systems still have the one
3238# or other ISA chip on the board that users don't know about so don't expect
3239# users to choose the right thing ...
3240#
3241config ISA
3242 bool
3243
3244config TC
3245 bool "TURBOchannel support"
3246 depends on MACH_DECSTATION
3247 help
3248 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3249 processors. TURBOchannel programming specifications are available
3250 at:
3251 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3252 and:
3253 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3254 Linux driver support status is documented at:
3255 <http://www.linux-mips.org/wiki/DECstation>
3256
3257config MMU
3258 bool
3259 default y
3260
3261config ARCH_MMAP_RND_BITS_MIN
3262 default 12 if 64BIT
3263 default 8
3264
3265config ARCH_MMAP_RND_BITS_MAX
3266 default 18 if 64BIT
3267 default 15
3268
3269config ARCH_MMAP_RND_COMPAT_BITS_MIN
3270 default 8
3271
3272config ARCH_MMAP_RND_COMPAT_BITS_MAX
3273 default 15
3274
3275config I8253
3276 bool
3277 select CLKSRC_I8253
3278 select CLKEVT_I8253
3279 select MIPS_EXTERNAL_TIMER
3280
3281config ZONE_DMA
3282 bool
3283
3284config ZONE_DMA32
3285 bool
3286
3287endmenu
3288
3289config TRAD_SIGNALS
3290 bool
3291
3292config MIPS32_COMPAT
3293 bool
3294
3295config COMPAT
3296 bool
3297
3298config SYSVIPC_COMPAT
3299 bool
3300
3301config MIPS32_O32
3302 bool "Kernel support for o32 binaries"
3303 depends on 64BIT
3304 select ARCH_WANT_OLD_COMPAT_IPC
3305 select COMPAT
3306 select MIPS32_COMPAT
3307 select SYSVIPC_COMPAT if SYSVIPC
3308 help
3309 Select this option if you want to run o32 binaries. These are pure
3310 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3311 existing binaries are in this format.
3312
3313 If unsure, say Y.
3314
3315config MIPS32_N32
3316 bool "Kernel support for n32 binaries"
3317 depends on 64BIT
3318 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3319 select COMPAT
3320 select MIPS32_COMPAT
3321 select SYSVIPC_COMPAT if SYSVIPC
3322 help
3323 Select this option if you want to run n32 binaries. These are
3324 64-bit binaries using 32-bit quantities for addressing and certain
3325 data that would normally be 64-bit. They are used in special
3326 cases.
3327
3328 If unsure, say N.
3329
3330menu "Power management options"
3331
3332config ARCH_HIBERNATION_POSSIBLE
3333 def_bool y
3334 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3335
3336config ARCH_SUSPEND_POSSIBLE
3337 def_bool y
3338 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3339
3340source "kernel/power/Kconfig"
3341
3342endmenu
3343
3344config MIPS_EXTERNAL_TIMER
3345 bool
3346
3347menu "CPU Power Management"
3348
3349if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3350source "drivers/cpufreq/Kconfig"
3351endif
3352
3353source "drivers/cpuidle/Kconfig"
3354
3355endmenu
3356
3357source "drivers/firmware/Kconfig"
3358
3359source "arch/mips/kvm/Kconfig"
3360
3361source "arch/mips/vdso/Kconfig"