1 # SPDX-License-Identifier: GPL-2.0
5 select ARCH_32BIT_OFF_T if !64BIT
6 select ARCH_BINFMT_ELF_STATE if MIPS_FP_SUPPORT
7 select ARCH_CLOCKSOURCE_DATA
8 select ARCH_HAS_CPU_FINALIZE_INIT
9 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
10 select ARCH_HAS_UBSAN_SANITIZE_ALL
11 select ARCH_SUPPORTS_UPROBES
12 select ARCH_USE_BUILTIN_BSWAP
13 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
14 select ARCH_USE_QUEUED_RWLOCKS
15 select ARCH_USE_QUEUED_SPINLOCKS
16 select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
17 select ARCH_WANT_IPC_PARSE_VERSION
18 select BUILDTIME_EXTABLE_SORT
19 select CLONE_BACKWARDS
20 select CPU_NO_EFFICIENT_FFS if (TARGET_ISA_REV < 1)
21 select CPU_PM if CPU_IDLE
22 select GENERIC_ATOMIC64 if !64BIT
23 select GENERIC_CLOCKEVENTS
24 select GENERIC_CMOS_UPDATE
25 select GENERIC_CPU_AUTOPROBE
26 select GENERIC_GETTIMEOFDAY
28 select GENERIC_IRQ_PROBE
29 select GENERIC_IRQ_SHOW
30 select GENERIC_ISA_DMA if EISA
31 select GENERIC_LIB_ASHLDI3
32 select GENERIC_LIB_ASHRDI3
33 select GENERIC_LIB_CMPDI2
34 select GENERIC_LIB_LSHRDI3
35 select GENERIC_LIB_UCMPDI2
36 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
37 select GENERIC_SMP_IDLE_THREAD
38 select GENERIC_TIME_VSYSCALL
39 select GUP_GET_PTE_LOW_HIGH if CPU_MIPS32 && PHYS_ADDR_T_64BIT
40 select HANDLE_DOMAIN_IRQ
41 select HAVE_ARCH_COMPILER_H
42 select HAVE_ARCH_JUMP_LABEL
44 select HAVE_ARCH_MMAP_RND_BITS if MMU
45 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
46 select HAVE_ARCH_SECCOMP_FILTER
47 select HAVE_ARCH_TRACEHOOK
48 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES
49 select HAVE_ASM_MODVERSIONS
50 select HAVE_CBPF_JIT if !64BIT && !CPU_MICROMIPS
51 select HAVE_EBPF_JIT if 64BIT && !CPU_MICROMIPS && TARGET_ISA_REV >= 2
52 select HAVE_CONTEXT_TRACKING
53 select HAVE_COPY_THREAD_TLS
54 select HAVE_C_RECORDMCOUNT
55 select HAVE_DEBUG_KMEMLEAK
56 select HAVE_DEBUG_STACKOVERFLOW
57 select HAVE_DMA_CONTIGUOUS
58 select HAVE_DYNAMIC_FTRACE
59 select HAVE_EXIT_THREAD
61 select HAVE_FTRACE_MCOUNT_RECORD
62 select HAVE_FUNCTION_GRAPH_TRACER
63 select HAVE_FUNCTION_TRACER
65 select HAVE_IOREMAP_PROT
66 select HAVE_IRQ_EXIT_ON_IRQ_STACK
67 select HAVE_IRQ_TIME_ACCOUNTING
69 select HAVE_KRETPROBES
70 select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
71 select HAVE_MEMBLOCK_NODE_MAP
72 select HAVE_MOD_ARCH_SPECIFIC
75 select HAVE_PERF_EVENTS
76 select HAVE_REGS_AND_STACK_ACCESS_API
78 select HAVE_STACKPROTECTOR
79 select HAVE_SYSCALL_TRACEPOINTS
80 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
81 select HAVE_GENERIC_VDSO
82 select IRQ_FORCED_THREADING
84 select MODULES_USE_ELF_RELA if MODULES && 64BIT
85 select MODULES_USE_ELF_REL if MODULES
86 select PERF_USE_VMALLOC
88 select SYSCTL_EXCEPTION_TRACE
90 select ARCH_HAS_PTE_SPECIAL if !(32BIT && CPU_HAS_RIXI)
92 menu "Machine selection"
99 bool "Generic board-agnostic MIPS kernel"
103 select CLKSRC_MIPS_GIC
105 select CPU_MIPSR2_IRQ_VI
106 select CPU_MIPSR2_IRQ_EI
108 select DMA_PERDEV_COHERENT
112 select MIPS_AUTO_PFN_OFFSET
113 select MIPS_CPU_SCACHE
115 select MIPS_L1_CACHE_SHIFT_7
116 select NO_EXCEPT_FILL
117 select PCI_DRIVERS_GENERIC
121 select SYS_HAS_CPU_MIPS32_R1
122 select SYS_HAS_CPU_MIPS32_R2
123 select SYS_HAS_CPU_MIPS32_R6
124 select SYS_HAS_CPU_MIPS64_R1
125 select SYS_HAS_CPU_MIPS64_R2
126 select SYS_HAS_CPU_MIPS64_R6
127 select SYS_SUPPORTS_32BIT_KERNEL
128 select SYS_SUPPORTS_64BIT_KERNEL
129 select SYS_SUPPORTS_BIG_ENDIAN
130 select SYS_SUPPORTS_HIGHMEM
131 select SYS_SUPPORTS_LITTLE_ENDIAN
132 select SYS_SUPPORTS_MICROMIPS
133 select SYS_SUPPORTS_MIPS_CPS
134 select SYS_SUPPORTS_MIPS16
135 select SYS_SUPPORTS_MULTITHREADING
136 select SYS_SUPPORTS_RELOCATABLE
137 select SYS_SUPPORTS_SMARTMIPS
138 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
139 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
140 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
141 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
142 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
143 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
147 Select this to build a kernel which aims to support multiple boards,
148 generally using a flattened device tree passed from the bootloader
149 using the boot protocol defined in the UHI (Unified Hosting
150 Interface) specification.
153 bool "Alchemy processor based machines"
154 select PHYS_ADDR_T_64BIT
158 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
159 select SYS_HAS_CPU_MIPS32_R1
160 select SYS_SUPPORTS_32BIT_KERNEL
161 select SYS_SUPPORTS_APM_EMULATION
163 select SYS_SUPPORTS_ZBOOT
167 bool "Texas Instruments AR7"
169 select DMA_NONCOHERENT
173 select NO_EXCEPT_FILL
175 select SYS_HAS_CPU_MIPS32_R1
176 select SYS_HAS_EARLY_PRINTK
177 select SYS_SUPPORTS_32BIT_KERNEL
178 select SYS_SUPPORTS_LITTLE_ENDIAN
179 select SYS_SUPPORTS_MIPS16
180 select SYS_SUPPORTS_ZBOOT_UART16550
185 Support for the Texas Instruments AR7 System-on-a-Chip
186 family: TNETD7100, 7200 and 7300.
189 bool "Atheros AR231x/AR531x SoC support"
192 select DMA_NONCOHERENT
195 select SYS_HAS_CPU_MIPS32_R1
196 select SYS_SUPPORTS_BIG_ENDIAN
197 select SYS_SUPPORTS_32BIT_KERNEL
198 select SYS_HAS_EARLY_PRINTK
200 Support for Atheros AR231x and Atheros AR531x based boards
203 bool "Atheros AR71XX/AR724X/AR913X based boards"
204 select ARCH_HAS_RESET_CONTROLLER
208 select DMA_NONCOHERENT
215 select SYS_HAS_CPU_MIPS32_R2
216 select SYS_HAS_EARLY_PRINTK
217 select SYS_SUPPORTS_32BIT_KERNEL
218 select SYS_SUPPORTS_BIG_ENDIAN
219 select SYS_SUPPORTS_MIPS16
220 select SYS_SUPPORTS_ZBOOT_UART_PROM
222 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
224 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
227 bool "Broadcom Generic BMIPS kernel"
228 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
229 select ARCH_HAS_PHYS_TO_DMA
231 select NO_EXCEPT_FILL
237 select BCM6345_L1_IRQ
238 select BCM7038_L1_IRQ
239 select BCM7120_L2_IRQ
240 select BRCMSTB_L2_IRQ
242 select DMA_NONCOHERENT
243 select SYS_SUPPORTS_32BIT_KERNEL
244 select SYS_SUPPORTS_LITTLE_ENDIAN
245 select SYS_SUPPORTS_BIG_ENDIAN
246 select SYS_SUPPORTS_HIGHMEM
247 select SYS_HAS_CPU_BMIPS32_3300
248 select SYS_HAS_CPU_BMIPS4350
249 select SYS_HAS_CPU_BMIPS4380
250 select SYS_HAS_CPU_BMIPS5000
252 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
253 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
254 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
255 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
256 select HARDIRQS_SW_RESEND
258 Build a generic DT-based kernel image that boots on select
259 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
260 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
261 must be set appropriately for your board.
264 bool "Broadcom BCM47XX based boards"
268 select DMA_NONCOHERENT
271 select SYS_HAS_CPU_MIPS32_R1
272 select NO_EXCEPT_FILL
273 select SYS_SUPPORTS_32BIT_KERNEL
274 select SYS_SUPPORTS_LITTLE_ENDIAN
275 select SYS_SUPPORTS_MIPS16
276 select SYS_SUPPORTS_ZBOOT
277 select SYS_HAS_EARLY_PRINTK
278 select USE_GENERIC_EARLY_PRINTK_8250
280 select LEDS_GPIO_REGISTER
283 select BCM47XX_SSB if !BCM47XX_BCMA
285 Support for BCM47XX based boards
288 bool "Broadcom BCM63XX based boards"
293 select DMA_NONCOHERENT
295 select SYS_SUPPORTS_32BIT_KERNEL
296 select SYS_SUPPORTS_BIG_ENDIAN
297 select SYS_HAS_EARLY_PRINTK
298 select SYS_HAS_CPU_BMIPS32_3300
299 select SYS_HAS_CPU_BMIPS4350
300 select SYS_HAS_CPU_BMIPS4380
304 select MIPS_L1_CACHE_SHIFT_4
307 Support for BCM63XX based boards
314 select DMA_NONCOHERENT
320 select PCI_GT64XXX_PCI0
321 select SYS_HAS_CPU_NEVADA
322 select SYS_HAS_EARLY_PRINTK
323 select SYS_SUPPORTS_32BIT_KERNEL
324 select SYS_SUPPORTS_64BIT_KERNEL
325 select SYS_SUPPORTS_LITTLE_ENDIAN
326 select USE_GENERIC_EARLY_PRINTK_8250
328 config MACH_DECSTATION
332 select CEVT_R4K if CPU_R4X00
334 select CSRC_R4K if CPU_R4X00
335 select CPU_DADDI_WORKAROUNDS if 64BIT
336 select CPU_R4000_WORKAROUNDS if 64BIT
337 select CPU_R4400_WORKAROUNDS if 64BIT
338 select DMA_NONCOHERENT
341 select SYS_HAS_CPU_R3000
342 select SYS_HAS_CPU_R4X00
343 select SYS_SUPPORTS_32BIT_KERNEL
344 select SYS_SUPPORTS_64BIT_KERNEL
345 select SYS_SUPPORTS_LITTLE_ENDIAN
346 select SYS_SUPPORTS_128HZ
347 select SYS_SUPPORTS_256HZ
348 select SYS_SUPPORTS_1024HZ
349 select MIPS_L1_CACHE_SHIFT_4
351 This enables support for DEC's MIPS based workstations. For details
352 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
353 DECstation porting pages on <http://decstation.unix-ag.org/>.
355 If you have one of the following DECstation Models you definitely
356 want to choose R4xx0 for the CPU Type:
363 otherwise choose R3000.
366 bool "Jazz family of machines"
367 select ARCH_MIGHT_HAVE_PC_PARPORT
368 select ARCH_MIGHT_HAVE_PC_SERIO
371 select ARCH_MAY_HAVE_PC_FDC
374 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
375 select GENERIC_ISA_DMA
376 select HAVE_PCSPKR_PLATFORM
381 select SYS_HAS_CPU_R4X00
382 select SYS_SUPPORTS_32BIT_KERNEL
383 select SYS_SUPPORTS_64BIT_KERNEL
384 select SYS_SUPPORTS_100HZ
386 This a family of machines based on the MIPS R4030 chipset which was
387 used by several vendors to build RISC/os and Windows NT workstations.
388 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
389 Olivetti M700-10 workstations.
392 bool "Ingenic SoC based machines"
393 select SYS_SUPPORTS_32BIT_KERNEL
394 select SYS_SUPPORTS_LITTLE_ENDIAN
395 select SYS_SUPPORTS_ZBOOT_UART16550
396 select CPU_SUPPORTS_HUGEPAGES
397 select DMA_NONCOHERENT
402 select GENERIC_IRQ_CHIP
403 select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
408 bool "Lantiq based platforms"
409 select DMA_NONCOHERENT
413 select SYS_HAS_CPU_MIPS32_R1
414 select SYS_HAS_CPU_MIPS32_R2
415 select SYS_SUPPORTS_BIG_ENDIAN
416 select SYS_SUPPORTS_32BIT_KERNEL
417 select SYS_SUPPORTS_MIPS16
418 select SYS_SUPPORTS_MULTITHREADING
419 select SYS_SUPPORTS_VPE_LOADER
420 select SYS_HAS_EARLY_PRINTK
427 select PINCTRL_LANTIQ
428 select ARCH_HAS_RESET_CONTROLLER
429 select RESET_CONTROLLER
432 bool "LASAT Networks platforms"
436 select DMA_NONCOHERENT
437 select SYS_HAS_EARLY_PRINTK
440 select PCI_GT64XXX_PCI0
442 select R5000_CPU_SCACHE
443 select SYS_HAS_CPU_R5000
444 select SYS_SUPPORTS_32BIT_KERNEL
445 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
446 select SYS_SUPPORTS_LITTLE_ENDIAN
448 config MACH_LOONGSON32
449 bool "Loongson-1 family of machines"
450 select SYS_SUPPORTS_ZBOOT
452 This enables support for the Loongson-1 family of machines.
454 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
455 the Institute of Computing Technology (ICT), Chinese Academy of
458 config MACH_LOONGSON64
459 bool "Loongson-2/3 family of machines"
460 select SYS_SUPPORTS_ZBOOT
462 This enables the support of Loongson-2/3 family of machines.
464 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
465 family of multi-core CPUs. They are both 64-bit general-purpose
466 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
467 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
468 in the People's Republic of China. The chief architect is Professor
471 config MACH_PISTACHIO
472 bool "IMG Pistachio SoC based boards"
476 select CLKSRC_MIPS_GIC
479 select DMA_NONCOHERENT
484 select MIPS_CPU_SCACHE
488 select SYS_HAS_CPU_MIPS32_R2
489 select SYS_SUPPORTS_32BIT_KERNEL
490 select SYS_SUPPORTS_LITTLE_ENDIAN
491 select SYS_SUPPORTS_MIPS_CPS
492 select SYS_SUPPORTS_MULTITHREADING
493 select SYS_SUPPORTS_RELOCATABLE
494 select SYS_SUPPORTS_ZBOOT
495 select SYS_HAS_EARLY_PRINTK
496 select USE_GENERIC_EARLY_PRINTK_8250
499 This enables support for the IMG Pistachio SoC platform.
502 bool "MIPS Malta board"
503 select ARCH_MAY_HAVE_PC_FDC
504 select ARCH_MIGHT_HAVE_PC_PARPORT
505 select ARCH_MIGHT_HAVE_PC_SERIO
510 select CLKSRC_MIPS_GIC
513 select DMA_MAYBE_COHERENT
514 select GENERIC_ISA_DMA
515 select HAVE_PCSPKR_PLATFORM
522 select MIPS_CPU_SCACHE
524 select MIPS_L1_CACHE_SHIFT_6
526 select PCI_GT64XXX_PCI0
529 select SYS_HAS_CPU_MIPS32_R1
530 select SYS_HAS_CPU_MIPS32_R2
531 select SYS_HAS_CPU_MIPS32_R3_5
532 select SYS_HAS_CPU_MIPS32_R5
533 select SYS_HAS_CPU_MIPS32_R6
534 select SYS_HAS_CPU_MIPS64_R1
535 select SYS_HAS_CPU_MIPS64_R2
536 select SYS_HAS_CPU_MIPS64_R6
537 select SYS_HAS_CPU_NEVADA
538 select SYS_HAS_CPU_RM7000
539 select SYS_SUPPORTS_32BIT_KERNEL
540 select SYS_SUPPORTS_64BIT_KERNEL
541 select SYS_SUPPORTS_BIG_ENDIAN
542 select SYS_SUPPORTS_HIGHMEM
543 select SYS_SUPPORTS_LITTLE_ENDIAN
544 select SYS_SUPPORTS_MICROMIPS
545 select SYS_SUPPORTS_MIPS16
546 select SYS_SUPPORTS_MIPS_CMP
547 select SYS_SUPPORTS_MIPS_CPS
548 select SYS_SUPPORTS_MULTITHREADING
549 select SYS_SUPPORTS_RELOCATABLE
550 select SYS_SUPPORTS_SMARTMIPS
551 select SYS_SUPPORTS_VPE_LOADER
552 select SYS_SUPPORTS_ZBOOT
554 select ZONE_DMA32 if 64BIT
556 This enables support for the MIPS Technologies Malta evaluation
560 bool "Microchip PIC32 Family"
562 This enables support for the Microchip PIC32 family of platforms.
564 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
568 bool "NEC EMMA2RH Mark-eins board"
572 This enables support for the NEC Electronics Mark-eins boards.
575 bool "NEC VR4100 series based machines"
578 select SYS_HAS_CPU_VR41XX
579 select SYS_SUPPORTS_MIPS16
583 bool "NXP STB220 board"
586 Support for NXP Semiconductors STB220 Development Board.
593 Support for NXP Semiconductors STB225 Development Board.
596 bool "PMC-Sierra MSP chipsets"
599 select DMA_NONCOHERENT
601 select NO_EXCEPT_FILL
603 select SYS_HAS_CPU_MIPS32_R1
604 select SYS_HAS_CPU_MIPS32_R2
605 select SYS_SUPPORTS_32BIT_KERNEL
606 select SYS_SUPPORTS_BIG_ENDIAN
607 select SYS_SUPPORTS_MIPS16
610 select SERIAL_8250_CONSOLE
611 select USB_EHCI_BIG_ENDIAN_MMIO
612 select USB_EHCI_BIG_ENDIAN_DESC
614 This adds support for the PMC-Sierra family of Multi-Service
615 Processor System-On-A-Chips. These parts include a number
616 of integrated peripherals, interfaces and DSPs in addition to
617 a variety of MIPS cores.
620 bool "Ralink based machines"
624 select DMA_NONCOHERENT
627 select SYS_HAS_CPU_MIPS32_R1
628 select SYS_HAS_CPU_MIPS32_R2
629 select SYS_SUPPORTS_32BIT_KERNEL
630 select SYS_SUPPORTS_LITTLE_ENDIAN
631 select SYS_SUPPORTS_MIPS16
632 select SYS_HAS_EARLY_PRINTK
634 select ARCH_HAS_RESET_CONTROLLER
635 select RESET_CONTROLLER
638 bool "SGI IP22 (Indy/Indigo2)"
641 select ARCH_MIGHT_HAVE_PC_SERIO
645 select DEFAULT_SGI_PARTITION
646 select DMA_NONCOHERENT
650 select IP22_CPU_SCACHE
652 select GENERIC_ISA_DMA_SUPPORT_BROKEN
654 select SGI_HAS_INDYDOG
660 select SYS_HAS_CPU_R4X00
661 select SYS_HAS_CPU_R5000
663 # Disable EARLY_PRINTK for now since it leads to overwritten prom
664 # memory during early boot on some machines.
666 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
667 # for a more details discussion
669 # select SYS_HAS_EARLY_PRINTK
670 select SYS_SUPPORTS_32BIT_KERNEL
671 select SYS_SUPPORTS_64BIT_KERNEL
672 select SYS_SUPPORTS_BIG_ENDIAN
673 select MIPS_L1_CACHE_SHIFT_7
675 This are the SGI Indy, Challenge S and Indigo2, as well as certain
676 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
677 that runs on these, say Y here.
680 bool "SGI IP27 (Origin200/2000)"
681 select ARCH_HAS_PHYS_TO_DMA
685 select DEFAULT_SGI_PARTITION
686 select SYS_HAS_EARLY_PRINTK
689 select IRQ_DOMAIN_HIERARCHY
690 select NR_CPUS_DEFAULT_64
691 select PCI_DRIVERS_GENERIC
692 select PCI_XTALK_BRIDGE
693 select SYS_HAS_CPU_R10000
694 select SYS_SUPPORTS_64BIT_KERNEL
695 select SYS_SUPPORTS_BIG_ENDIAN
696 select SYS_SUPPORTS_NUMA
697 select SYS_SUPPORTS_SMP
698 select MIPS_L1_CACHE_SHIFT_7
700 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
701 workstations. To compile a Linux kernel that runs on these, say Y
705 bool "SGI IP28 (Indigo2 R10k)"
708 select ARCH_MIGHT_HAVE_PC_SERIO
712 select DEFAULT_SGI_PARTITION
713 select DMA_NONCOHERENT
714 select GENERIC_ISA_DMA_SUPPORT_BROKEN
720 select SGI_HAS_INDYDOG
726 select SYS_HAS_CPU_R10000
728 # Disable EARLY_PRINTK for now since it leads to overwritten prom
729 # memory during early boot on some machines.
731 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
732 # for a more details discussion
734 # select SYS_HAS_EARLY_PRINTK
735 select SYS_SUPPORTS_64BIT_KERNEL
736 select SYS_SUPPORTS_BIG_ENDIAN
737 select MIPS_L1_CACHE_SHIFT_7
739 This is the SGI Indigo2 with R10000 processor. To compile a Linux
740 kernel that runs on these, say Y here.
744 select ARCH_HAS_PHYS_TO_DMA
750 select DMA_NONCOHERENT
753 select R5000_CPU_SCACHE
754 select RM7000_CPU_SCACHE
755 select SYS_HAS_CPU_R5000
756 select SYS_HAS_CPU_R10000 if BROKEN
757 select SYS_HAS_CPU_RM7000
758 select SYS_HAS_CPU_NEVADA
759 select SYS_SUPPORTS_64BIT_KERNEL
760 select SYS_SUPPORTS_BIG_ENDIAN
762 If you want this kernel to run on SGI O2 workstation, say Y here.
765 bool "Sibyte BCM91120C-CRhine"
767 select SIBYTE_BCM1120
769 select SYS_HAS_CPU_SB1
770 select SYS_SUPPORTS_BIG_ENDIAN
771 select SYS_SUPPORTS_LITTLE_ENDIAN
774 bool "Sibyte BCM91120x-Carmel"
776 select SIBYTE_BCM1120
778 select SYS_HAS_CPU_SB1
779 select SYS_SUPPORTS_BIG_ENDIAN
780 select SYS_SUPPORTS_LITTLE_ENDIAN
783 bool "Sibyte BCM91125C-CRhone"
785 select SIBYTE_BCM1125
787 select SYS_HAS_CPU_SB1
788 select SYS_SUPPORTS_BIG_ENDIAN
789 select SYS_SUPPORTS_HIGHMEM
790 select SYS_SUPPORTS_LITTLE_ENDIAN
793 bool "Sibyte BCM91125E-Rhone"
795 select SIBYTE_BCM1125H
797 select SYS_HAS_CPU_SB1
798 select SYS_SUPPORTS_BIG_ENDIAN
799 select SYS_SUPPORTS_LITTLE_ENDIAN
802 bool "Sibyte BCM91250A-SWARM"
804 select HAVE_PATA_PLATFORM
807 select SYS_HAS_CPU_SB1
808 select SYS_SUPPORTS_BIG_ENDIAN
809 select SYS_SUPPORTS_HIGHMEM
810 select SYS_SUPPORTS_LITTLE_ENDIAN
811 select ZONE_DMA32 if 64BIT
812 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
814 config SIBYTE_LITTLESUR
815 bool "Sibyte BCM91250C2-LittleSur"
817 select HAVE_PATA_PLATFORM
820 select SYS_HAS_CPU_SB1
821 select SYS_SUPPORTS_BIG_ENDIAN
822 select SYS_SUPPORTS_HIGHMEM
823 select SYS_SUPPORTS_LITTLE_ENDIAN
824 select ZONE_DMA32 if 64BIT
826 config SIBYTE_SENTOSA
827 bool "Sibyte BCM91250E-Sentosa"
831 select SYS_HAS_CPU_SB1
832 select SYS_SUPPORTS_BIG_ENDIAN
833 select SYS_SUPPORTS_LITTLE_ENDIAN
834 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
837 bool "Sibyte BCM91480B-BigSur"
839 select NR_CPUS_DEFAULT_4
840 select SIBYTE_BCM1x80
842 select SYS_HAS_CPU_SB1
843 select SYS_SUPPORTS_BIG_ENDIAN
844 select SYS_SUPPORTS_HIGHMEM
845 select SYS_SUPPORTS_LITTLE_ENDIAN
846 select ZONE_DMA32 if 64BIT
847 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
850 bool "SNI RM200/300/400"
851 select FW_ARC if CPU_LITTLE_ENDIAN
852 select FW_ARC32 if CPU_LITTLE_ENDIAN
853 select FW_SNIPROM if CPU_BIG_ENDIAN
854 select ARCH_MAY_HAVE_PC_FDC
855 select ARCH_MIGHT_HAVE_PC_PARPORT
856 select ARCH_MIGHT_HAVE_PC_SERIO
860 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
861 select DMA_NONCOHERENT
862 select GENERIC_ISA_DMA
864 select HAVE_PCSPKR_PLATFORM
870 select MIPS_L1_CACHE_SHIFT_6
871 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
872 select SYS_HAS_CPU_R4X00
873 select SYS_HAS_CPU_R5000
874 select SYS_HAS_CPU_R10000
875 select R5000_CPU_SCACHE
876 select SYS_HAS_EARLY_PRINTK
877 select SYS_SUPPORTS_32BIT_KERNEL
878 select SYS_SUPPORTS_64BIT_KERNEL
879 select SYS_SUPPORTS_BIG_ENDIAN
880 select SYS_SUPPORTS_HIGHMEM
881 select SYS_SUPPORTS_LITTLE_ENDIAN
883 The SNI RM200/300/400 are MIPS-based machines manufactured by
884 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
885 Technology and now in turn merged with Fujitsu. Say Y here to
886 support this machine type.
889 bool "Toshiba TX39 series based machines"
892 bool "Toshiba TX49 series based machines"
894 config MIKROTIK_RB532
895 bool "Mikrotik RB532 boards"
898 select DMA_NONCOHERENT
901 select SYS_HAS_CPU_MIPS32_R1
902 select SYS_SUPPORTS_32BIT_KERNEL
903 select SYS_SUPPORTS_LITTLE_ENDIAN
907 select MIPS_L1_CACHE_SHIFT_4
909 Support the Mikrotik(tm) RouterBoard 532 series,
910 based on the IDT RC32434 SoC.
912 config CAVIUM_OCTEON_SOC
913 bool "Cavium Networks Octeon SoC based boards"
915 select ARCH_HAS_PHYS_TO_DMA
917 select PHYS_ADDR_T_64BIT
918 select SYS_SUPPORTS_64BIT_KERNEL
919 select SYS_SUPPORTS_BIG_ENDIAN
921 select EDAC_ATOMIC_SCRUB
922 select SYS_SUPPORTS_LITTLE_ENDIAN
923 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
924 select SYS_HAS_EARLY_PRINTK
925 select SYS_HAS_CPU_CAVIUM_OCTEON
932 select ARCH_SPARSEMEM_ENABLE
933 select SYS_SUPPORTS_SMP
934 select NR_CPUS_DEFAULT_64
935 select MIPS_NR_CPU_NR_MAP_1024
937 select MTD_COMPLEX_MAPPINGS
939 select SYS_SUPPORTS_RELOCATABLE
941 This option supports all of the Octeon reference boards from Cavium
942 Networks. It builds a kernel that dynamically determines the Octeon
943 CPU type and supports all known board reference implementations.
944 Some of the supported boards are:
951 Say Y here for most Octeon reference boards.
954 bool "Netlogic XLR/XLS based systems"
957 select SYS_HAS_CPU_XLR
958 select SYS_SUPPORTS_SMP
961 select SYS_SUPPORTS_32BIT_KERNEL
962 select SYS_SUPPORTS_64BIT_KERNEL
963 select PHYS_ADDR_T_64BIT
964 select SYS_SUPPORTS_BIG_ENDIAN
965 select SYS_SUPPORTS_HIGHMEM
966 select NR_CPUS_DEFAULT_32
970 select ZONE_DMA32 if 64BIT
972 select SYS_HAS_EARLY_PRINTK
973 select SYS_SUPPORTS_ZBOOT
974 select SYS_SUPPORTS_ZBOOT_UART16550
976 Support for systems based on Netlogic XLR and XLS processors.
977 Say Y here if you have a XLR or XLS based board.
980 bool "Netlogic XLP based systems"
983 select SYS_HAS_CPU_XLP
984 select SYS_SUPPORTS_SMP
986 select SYS_SUPPORTS_32BIT_KERNEL
987 select SYS_SUPPORTS_64BIT_KERNEL
988 select PHYS_ADDR_T_64BIT
990 select SYS_SUPPORTS_BIG_ENDIAN
991 select SYS_SUPPORTS_LITTLE_ENDIAN
992 select SYS_SUPPORTS_HIGHMEM
993 select NR_CPUS_DEFAULT_32
997 select ZONE_DMA32 if 64BIT
999 select SYS_HAS_EARLY_PRINTK
1001 select SYS_SUPPORTS_ZBOOT
1002 select SYS_SUPPORTS_ZBOOT_UART16550
1004 This board is based on Netlogic XLP Processor.
1005 Say Y here if you have a XLP based board.
1007 config MIPS_PARAVIRT
1008 bool "Para-Virtualized guest system"
1011 select SYS_SUPPORTS_64BIT_KERNEL
1012 select SYS_SUPPORTS_32BIT_KERNEL
1013 select SYS_SUPPORTS_BIG_ENDIAN
1014 select SYS_SUPPORTS_SMP
1015 select NR_CPUS_DEFAULT_4
1016 select SYS_HAS_EARLY_PRINTK
1017 select SYS_HAS_CPU_MIPS32_R2
1018 select SYS_HAS_CPU_MIPS64_R2
1019 select SYS_HAS_CPU_CAVIUM_OCTEON
1021 select SWAP_IO_SPACE
1023 This option supports guest running under ????
1027 source "arch/mips/alchemy/Kconfig"
1028 source "arch/mips/ath25/Kconfig"
1029 source "arch/mips/ath79/Kconfig"
1030 source "arch/mips/bcm47xx/Kconfig"
1031 source "arch/mips/bcm63xx/Kconfig"
1032 source "arch/mips/bmips/Kconfig"
1033 source "arch/mips/generic/Kconfig"
1034 source "arch/mips/jazz/Kconfig"
1035 source "arch/mips/jz4740/Kconfig"
1036 source "arch/mips/lantiq/Kconfig"
1037 source "arch/mips/lasat/Kconfig"
1038 source "arch/mips/pic32/Kconfig"
1039 source "arch/mips/pistachio/Kconfig"
1040 source "arch/mips/pmcs-msp71xx/Kconfig"
1041 source "arch/mips/ralink/Kconfig"
1042 source "arch/mips/sgi-ip27/Kconfig"
1043 source "arch/mips/sibyte/Kconfig"
1044 source "arch/mips/txx9/Kconfig"
1045 source "arch/mips/vr41xx/Kconfig"
1046 source "arch/mips/cavium-octeon/Kconfig"
1047 source "arch/mips/loongson32/Kconfig"
1048 source "arch/mips/loongson64/Kconfig"
1049 source "arch/mips/netlogic/Kconfig"
1050 source "arch/mips/paravirt/Kconfig"
1054 config GENERIC_HWEIGHT
1058 config GENERIC_CALIBRATE_DELAY
1062 config SCHED_OMIT_FRAME_POINTER
1067 # Select some configuration options automatically based on user selections.
1072 config ARCH_MAY_HAVE_PC_FDC
1108 config MIPS_CLOCK_VSYSCALL
1109 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1118 config ARCH_SUPPORTS_UPROBES
1121 config DMA_MAYBE_COHERENT
1122 select ARCH_HAS_DMA_COHERENCE_H
1123 select DMA_NONCOHERENT
1126 config DMA_PERDEV_COHERENT
1128 select ARCH_HAS_SETUP_DMA_OPS
1129 select DMA_NONCOHERENT
1131 config DMA_NONCOHERENT
1134 # MIPS allows mixing "slightly different" Cacheability and Coherency
1135 # Attribute bits. It is believed that the uncached access through
1136 # KSEG1 and the implementation specific "uncached accelerated" used
1137 # by pgprot_writcombine can be mixed, and the latter sometimes provides
1138 # significant advantages.
1140 select ARCH_HAS_DMA_WRITE_COMBINE
1141 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1142 select ARCH_HAS_UNCACHED_SEGMENT
1143 select NEED_DMA_MAP_STATE
1144 select ARCH_HAS_DMA_COHERENT_TO_PFN
1145 select DMA_NONCOHERENT_CACHE_SYNC
1147 config SYS_HAS_EARLY_PRINTK
1150 config SYS_SUPPORTS_HOTPLUG_CPU
1153 config MIPS_BONITO64
1168 config NO_IOPORT_MAP
1173 default y if !CPU_HAS_LOAD_STORE_LR
1175 config GENERIC_ISA_DMA
1177 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1180 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1182 select GENERIC_ISA_DMA
1187 config HOLES_IN_ZONE
1190 config SYS_SUPPORTS_RELOCATABLE
1193 Selected if the platform supports relocating the kernel.
1194 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1195 to allow access to command line and entropy sources.
1197 config MIPS_CBPF_JIT
1199 depends on BPF_JIT && HAVE_CBPF_JIT
1201 config MIPS_EBPF_JIT
1203 depends on BPF_JIT && HAVE_EBPF_JIT
1207 # Endianness selection. Sufficiently obscure so many users don't know what to
1208 # answer,so we try hard to limit the available choices. Also the use of a
1209 # choice statement should be more obvious to the user.
1212 prompt "Endianness selection"
1214 Some MIPS machines can be configured for either little or big endian
1215 byte order. These modes require different kernels and a different
1216 Linux distribution. In general there is one preferred byteorder for a
1217 particular system but some systems are just as commonly used in the
1218 one or the other endianness.
1220 config CPU_BIG_ENDIAN
1222 depends on SYS_SUPPORTS_BIG_ENDIAN
1224 config CPU_LITTLE_ENDIAN
1225 bool "Little endian"
1226 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1233 config SYS_SUPPORTS_APM_EMULATION
1236 config SYS_SUPPORTS_BIG_ENDIAN
1239 config SYS_SUPPORTS_LITTLE_ENDIAN
1242 config SYS_SUPPORTS_HUGETLBFS
1244 depends on CPU_SUPPORTS_HUGEPAGES
1247 config MIPS_HUGE_TLB_SUPPORT
1248 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1265 config PCI_GT64XXX_PCI0
1268 config PCI_XTALK_BRIDGE
1271 config NO_EXCEPT_FILL
1278 select DMA_NONCOHERENT
1280 select SWAP_IO_SPACE
1281 select SYS_HAS_CPU_R5500
1282 select SYS_SUPPORTS_32BIT_KERNEL
1283 select SYS_SUPPORTS_64BIT_KERNEL
1284 select SYS_SUPPORTS_BIG_ENDIAN
1291 select DMA_NONCOHERENT
1292 select SYS_HAS_CPU_MIPS32_R2
1293 select SYS_SUPPORTS_32BIT_KERNEL
1294 select SYS_SUPPORTS_LITTLE_ENDIAN
1295 select SYS_SUPPORTS_BIG_ENDIAN
1296 select SYS_SUPPORTS_MIPS16
1297 select CPU_MIPSR2_IRQ_VI
1306 config SWAP_IO_SPACE
1309 config SGI_HAS_INDYDOG
1321 config SGI_HAS_ZILOG
1324 config SGI_HAS_I8042
1327 config DEFAULT_SGI_PARTITION
1339 config MIPS_L1_CACHE_SHIFT_4
1342 config MIPS_L1_CACHE_SHIFT_5
1345 config MIPS_L1_CACHE_SHIFT_6
1348 config MIPS_L1_CACHE_SHIFT_7
1351 config MIPS_L1_CACHE_SHIFT
1353 default "7" if MIPS_L1_CACHE_SHIFT_7
1354 default "6" if MIPS_L1_CACHE_SHIFT_6
1355 default "5" if MIPS_L1_CACHE_SHIFT_5
1356 default "4" if MIPS_L1_CACHE_SHIFT_4
1359 config HAVE_STD_PC_SERIAL_PORT
1363 bool "ARC console support"
1364 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1368 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1373 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1382 menu "CPU selection"
1388 config CPU_LOONGSON3
1389 bool "Loongson 3 CPU"
1390 depends on SYS_HAS_CPU_LOONGSON3
1391 select ARCH_HAS_PHYS_TO_DMA
1392 select CPU_SUPPORTS_64BIT_KERNEL
1393 select CPU_SUPPORTS_HIGHMEM
1394 select CPU_SUPPORTS_HUGEPAGES
1395 select CPU_HAS_LOAD_STORE_LR
1396 select WEAK_ORDERING
1397 select WEAK_REORDERING_BEYOND_LLSC
1398 select MIPS_PGD_C0_CONTEXT
1399 select MIPS_L1_CACHE_SHIFT_6
1400 select MIPS_FP_SUPPORT
1404 The Loongson 3 processor implements the MIPS64R2 instruction
1405 set with many extensions.
1407 config LOONGSON3_ENHANCEMENT
1408 bool "New Loongson 3 CPU Enhancements"
1411 select CPU_HAS_PREFETCH
1412 depends on CPU_LOONGSON3
1414 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1415 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1416 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1417 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1418 Fast TLB refill support, etc.
1420 This option enable those enhancements which are not probed at run
1421 time. If you want a generic kernel to run on all Loongson 3 machines,
1422 please say 'N' here. If you want a high-performance kernel to run on
1423 new Loongson 3 machines only, please say 'Y' here.
1425 config CPU_LOONGSON3_WORKAROUNDS
1426 bool "Old Loongson 3 LLSC Workarounds"
1428 depends on CPU_LOONGSON3
1430 Loongson 3 processors have the llsc issues which require workarounds.
1431 Without workarounds the system may hang unexpectedly.
1433 Newer Loongson 3 will fix these issues and no workarounds are needed.
1434 The workarounds have no significant side effect on them but may
1435 decrease the performance of the system so this option should be
1436 disabled unless the kernel is intended to be run on old systems.
1438 If unsure, please say Y.
1440 config CPU_LOONGSON2E
1442 depends on SYS_HAS_CPU_LOONGSON2E
1443 select CPU_LOONGSON2
1445 The Loongson 2E processor implements the MIPS III instruction set
1446 with many extensions.
1448 It has an internal FPGA northbridge, which is compatible to
1451 config CPU_LOONGSON2F
1453 depends on SYS_HAS_CPU_LOONGSON2F
1454 select CPU_LOONGSON2
1457 The Loongson 2F processor implements the MIPS III instruction set
1458 with many extensions.
1460 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1461 have a similar programming interface with FPGA northbridge used in
1464 config CPU_LOONGSON1B
1466 depends on SYS_HAS_CPU_LOONGSON1B
1467 select CPU_LOONGSON1
1468 select LEDS_GPIO_REGISTER
1470 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1471 Release 1 instruction set and part of the MIPS32 Release 2
1474 config CPU_LOONGSON1C
1476 depends on SYS_HAS_CPU_LOONGSON1C
1477 select CPU_LOONGSON1
1478 select LEDS_GPIO_REGISTER
1480 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1481 Release 1 instruction set and part of the MIPS32 Release 2
1484 config CPU_MIPS32_R1
1485 bool "MIPS32 Release 1"
1486 depends on SYS_HAS_CPU_MIPS32_R1
1487 select CPU_HAS_PREFETCH
1488 select CPU_HAS_LOAD_STORE_LR
1489 select CPU_SUPPORTS_32BIT_KERNEL
1490 select CPU_SUPPORTS_HIGHMEM
1492 Choose this option to build a kernel for release 1 or later of the
1493 MIPS32 architecture. Most modern embedded systems with a 32-bit
1494 MIPS processor are based on a MIPS32 processor. If you know the
1495 specific type of processor in your system, choose those that one
1496 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1497 Release 2 of the MIPS32 architecture is available since several
1498 years so chances are you even have a MIPS32 Release 2 processor
1499 in which case you should choose CPU_MIPS32_R2 instead for better
1502 config CPU_MIPS32_R2
1503 bool "MIPS32 Release 2"
1504 depends on SYS_HAS_CPU_MIPS32_R2
1505 select CPU_HAS_PREFETCH
1506 select CPU_HAS_LOAD_STORE_LR
1507 select CPU_SUPPORTS_32BIT_KERNEL
1508 select CPU_SUPPORTS_HIGHMEM
1509 select CPU_SUPPORTS_MSA
1512 Choose this option to build a kernel for release 2 or later of the
1513 MIPS32 architecture. Most modern embedded systems with a 32-bit
1514 MIPS processor are based on a MIPS32 processor. If you know the
1515 specific type of processor in your system, choose those that one
1516 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1518 config CPU_MIPS32_R6
1519 bool "MIPS32 Release 6"
1520 depends on SYS_HAS_CPU_MIPS32_R6
1521 select CPU_HAS_PREFETCH
1522 select CPU_SUPPORTS_32BIT_KERNEL
1523 select CPU_SUPPORTS_HIGHMEM
1524 select CPU_SUPPORTS_MSA
1526 select MIPS_O32_FP64_SUPPORT
1528 Choose this option to build a kernel for release 6 or later of the
1529 MIPS32 architecture. New MIPS processors, starting with the Warrior
1530 family, are based on a MIPS32r6 processor. If you own an older
1531 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1533 config CPU_MIPS64_R1
1534 bool "MIPS64 Release 1"
1535 depends on SYS_HAS_CPU_MIPS64_R1
1536 select CPU_HAS_PREFETCH
1537 select CPU_HAS_LOAD_STORE_LR
1538 select CPU_SUPPORTS_32BIT_KERNEL
1539 select CPU_SUPPORTS_64BIT_KERNEL
1540 select CPU_SUPPORTS_HIGHMEM
1541 select CPU_SUPPORTS_HUGEPAGES
1543 Choose this option to build a kernel for release 1 or later of the
1544 MIPS64 architecture. Many modern embedded systems with a 64-bit
1545 MIPS processor are based on a MIPS64 processor. If you know the
1546 specific type of processor in your system, choose those that one
1547 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1548 Release 2 of the MIPS64 architecture is available since several
1549 years so chances are you even have a MIPS64 Release 2 processor
1550 in which case you should choose CPU_MIPS64_R2 instead for better
1553 config CPU_MIPS64_R2
1554 bool "MIPS64 Release 2"
1555 depends on SYS_HAS_CPU_MIPS64_R2
1556 select CPU_HAS_PREFETCH
1557 select CPU_HAS_LOAD_STORE_LR
1558 select CPU_SUPPORTS_32BIT_KERNEL
1559 select CPU_SUPPORTS_64BIT_KERNEL
1560 select CPU_SUPPORTS_HIGHMEM
1561 select CPU_SUPPORTS_HUGEPAGES
1562 select CPU_SUPPORTS_MSA
1565 Choose this option to build a kernel for release 2 or later of the
1566 MIPS64 architecture. Many modern embedded systems with a 64-bit
1567 MIPS processor are based on a MIPS64 processor. If you know the
1568 specific type of processor in your system, choose those that one
1569 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1571 config CPU_MIPS64_R6
1572 bool "MIPS64 Release 6"
1573 depends on SYS_HAS_CPU_MIPS64_R6
1574 select CPU_HAS_PREFETCH
1575 select CPU_SUPPORTS_32BIT_KERNEL
1576 select CPU_SUPPORTS_64BIT_KERNEL
1577 select CPU_SUPPORTS_HIGHMEM
1578 select CPU_SUPPORTS_HUGEPAGES
1579 select CPU_SUPPORTS_MSA
1580 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1583 Choose this option to build a kernel for release 6 or later of the
1584 MIPS64 architecture. New MIPS processors, starting with the Warrior
1585 family, are based on a MIPS64r6 processor. If you own an older
1586 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1590 depends on SYS_HAS_CPU_R3000
1592 select CPU_HAS_LOAD_STORE_LR
1594 select CPU_SUPPORTS_32BIT_KERNEL
1595 select CPU_SUPPORTS_HIGHMEM
1597 Please make sure to pick the right CPU type. Linux/MIPS is not
1598 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1599 *not* work on R4000 machines and vice versa. However, since most
1600 of the supported machines have an R4000 (or similar) CPU, R4x00
1601 might be a safe bet. If the resulting kernel does not work,
1602 try to recompile with R3000.
1606 depends on SYS_HAS_CPU_TX39XX
1607 select CPU_SUPPORTS_32BIT_KERNEL
1608 select CPU_HAS_LOAD_STORE_LR
1613 depends on SYS_HAS_CPU_VR41XX
1614 select CPU_SUPPORTS_32BIT_KERNEL
1615 select CPU_SUPPORTS_64BIT_KERNEL
1616 select CPU_HAS_LOAD_STORE_LR
1618 The options selects support for the NEC VR4100 series of processors.
1619 Only choose this option if you have one of these processors as a
1620 kernel built with this option will not run on any other type of
1621 processor or vice versa.
1625 depends on SYS_HAS_CPU_R4X00
1626 select CPU_SUPPORTS_32BIT_KERNEL
1627 select CPU_SUPPORTS_64BIT_KERNEL
1628 select CPU_SUPPORTS_HUGEPAGES
1629 select CPU_HAS_LOAD_STORE_LR
1631 MIPS Technologies R4000-series processors other than 4300, including
1632 the R4000, R4400, R4600, and 4700.
1636 depends on SYS_HAS_CPU_TX49XX
1637 select CPU_HAS_PREFETCH
1638 select CPU_HAS_LOAD_STORE_LR
1639 select CPU_SUPPORTS_32BIT_KERNEL
1640 select CPU_SUPPORTS_64BIT_KERNEL
1641 select CPU_SUPPORTS_HUGEPAGES
1645 depends on SYS_HAS_CPU_R5000
1646 select CPU_SUPPORTS_32BIT_KERNEL
1647 select CPU_SUPPORTS_64BIT_KERNEL
1648 select CPU_SUPPORTS_HUGEPAGES
1649 select CPU_HAS_LOAD_STORE_LR
1651 MIPS Technologies R5000-series processors other than the Nevada.
1655 depends on SYS_HAS_CPU_R5500
1656 select CPU_SUPPORTS_32BIT_KERNEL
1657 select CPU_SUPPORTS_64BIT_KERNEL
1658 select CPU_SUPPORTS_HUGEPAGES
1659 select CPU_HAS_LOAD_STORE_LR
1661 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1666 depends on SYS_HAS_CPU_NEVADA
1667 select CPU_SUPPORTS_32BIT_KERNEL
1668 select CPU_SUPPORTS_64BIT_KERNEL
1669 select CPU_SUPPORTS_HUGEPAGES
1670 select CPU_HAS_LOAD_STORE_LR
1672 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1676 depends on SYS_HAS_CPU_R10000
1677 select CPU_HAS_PREFETCH
1678 select CPU_HAS_LOAD_STORE_LR
1679 select CPU_SUPPORTS_32BIT_KERNEL
1680 select CPU_SUPPORTS_64BIT_KERNEL
1681 select CPU_SUPPORTS_HIGHMEM
1682 select CPU_SUPPORTS_HUGEPAGES
1684 MIPS Technologies R10000-series processors.
1688 depends on SYS_HAS_CPU_RM7000
1689 select CPU_HAS_PREFETCH
1690 select CPU_HAS_LOAD_STORE_LR
1691 select CPU_SUPPORTS_32BIT_KERNEL
1692 select CPU_SUPPORTS_64BIT_KERNEL
1693 select CPU_SUPPORTS_HIGHMEM
1694 select CPU_SUPPORTS_HUGEPAGES
1698 depends on SYS_HAS_CPU_SB1
1699 select CPU_HAS_LOAD_STORE_LR
1700 select CPU_SUPPORTS_32BIT_KERNEL
1701 select CPU_SUPPORTS_64BIT_KERNEL
1702 select CPU_SUPPORTS_HIGHMEM
1703 select CPU_SUPPORTS_HUGEPAGES
1704 select WEAK_ORDERING
1706 config CPU_CAVIUM_OCTEON
1707 bool "Cavium Octeon processor"
1708 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1709 select CPU_HAS_PREFETCH
1710 select CPU_HAS_LOAD_STORE_LR
1711 select CPU_SUPPORTS_64BIT_KERNEL
1712 select WEAK_ORDERING
1713 select CPU_SUPPORTS_HIGHMEM
1714 select CPU_SUPPORTS_HUGEPAGES
1715 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1716 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1717 select MIPS_L1_CACHE_SHIFT_7
1720 The Cavium Octeon processor is a highly integrated chip containing
1721 many ethernet hardware widgets for networking tasks. The processor
1722 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1723 Full details can be found at http://www.caviumnetworks.com.
1726 bool "Broadcom BMIPS"
1727 depends on SYS_HAS_CPU_BMIPS
1729 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1730 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1731 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1732 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1733 select CPU_SUPPORTS_32BIT_KERNEL
1734 select DMA_NONCOHERENT
1736 select SWAP_IO_SPACE
1737 select WEAK_ORDERING
1738 select CPU_SUPPORTS_HIGHMEM
1739 select CPU_HAS_PREFETCH
1740 select CPU_HAS_LOAD_STORE_LR
1741 select CPU_SUPPORTS_CPUFREQ
1742 select MIPS_EXTERNAL_TIMER
1744 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1747 bool "Netlogic XLR SoC"
1748 depends on SYS_HAS_CPU_XLR
1749 select CPU_HAS_LOAD_STORE_LR
1750 select CPU_SUPPORTS_32BIT_KERNEL
1751 select CPU_SUPPORTS_64BIT_KERNEL
1752 select CPU_SUPPORTS_HIGHMEM
1753 select CPU_SUPPORTS_HUGEPAGES
1754 select WEAK_ORDERING
1755 select WEAK_REORDERING_BEYOND_LLSC
1757 Netlogic Microsystems XLR/XLS processors.
1760 bool "Netlogic XLP SoC"
1761 depends on SYS_HAS_CPU_XLP
1762 select CPU_SUPPORTS_32BIT_KERNEL
1763 select CPU_SUPPORTS_64BIT_KERNEL
1764 select CPU_SUPPORTS_HIGHMEM
1765 select WEAK_ORDERING
1766 select WEAK_REORDERING_BEYOND_LLSC
1767 select CPU_HAS_PREFETCH
1768 select CPU_HAS_LOAD_STORE_LR
1770 select CPU_SUPPORTS_HUGEPAGES
1771 select MIPS_ASID_BITS_VARIABLE
1773 Netlogic Microsystems XLP processors.
1776 config CPU_MIPS32_3_5_FEATURES
1777 bool "MIPS32 Release 3.5 Features"
1778 depends on SYS_HAS_CPU_MIPS32_R3_5
1779 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1781 Choose this option to build a kernel for release 2 or later of the
1782 MIPS32 architecture including features from the 3.5 release such as
1783 support for Enhanced Virtual Addressing (EVA).
1785 config CPU_MIPS32_3_5_EVA
1786 bool "Enhanced Virtual Addressing (EVA)"
1787 depends on CPU_MIPS32_3_5_FEATURES
1791 Choose this option if you want to enable the Enhanced Virtual
1792 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1793 One of its primary benefits is an increase in the maximum size
1794 of lowmem (up to 3GB). If unsure, say 'N' here.
1796 config CPU_MIPS32_R5_FEATURES
1797 bool "MIPS32 Release 5 Features"
1798 depends on SYS_HAS_CPU_MIPS32_R5
1799 depends on CPU_MIPS32_R2
1801 Choose this option to build a kernel for release 2 or later of the
1802 MIPS32 architecture including features from release 5 such as
1803 support for Extended Physical Addressing (XPA).
1805 config CPU_MIPS32_R5_XPA
1806 bool "Extended Physical Addressing (XPA)"
1807 depends on CPU_MIPS32_R5_FEATURES
1809 depends on !PAGE_SIZE_4KB
1810 depends on SYS_SUPPORTS_HIGHMEM
1813 select PHYS_ADDR_T_64BIT
1816 Choose this option if you want to enable the Extended Physical
1817 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1818 benefit is to increase physical addressing equal to or greater
1819 than 40 bits. Note that this has the side effect of turning on
1820 64-bit addressing which in turn makes the PTEs 64-bit in size.
1821 If unsure, say 'N' here.
1824 config CPU_NOP_WORKAROUNDS
1827 config CPU_JUMP_WORKAROUNDS
1830 config CPU_LOONGSON2F_WORKAROUNDS
1831 bool "Loongson 2F Workarounds"
1833 select CPU_NOP_WORKAROUNDS
1834 select CPU_JUMP_WORKAROUNDS
1836 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1837 require workarounds. Without workarounds the system may hang
1838 unexpectedly. For more information please refer to the gas
1839 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1841 Loongson 2F03 and later have fixed these issues and no workarounds
1842 are needed. The workarounds have no significant side effect on them
1843 but may decrease the performance of the system so this option should
1844 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1847 If unsure, please say Y.
1848 endif # CPU_LOONGSON2F
1850 config SYS_SUPPORTS_ZBOOT
1852 select HAVE_KERNEL_GZIP
1853 select HAVE_KERNEL_BZIP2
1854 select HAVE_KERNEL_LZ4
1855 select HAVE_KERNEL_LZMA
1856 select HAVE_KERNEL_LZO
1857 select HAVE_KERNEL_XZ
1859 config SYS_SUPPORTS_ZBOOT_UART16550
1861 select SYS_SUPPORTS_ZBOOT
1863 config SYS_SUPPORTS_ZBOOT_UART_PROM
1865 select SYS_SUPPORTS_ZBOOT
1867 config CPU_LOONGSON2
1869 select CPU_SUPPORTS_32BIT_KERNEL
1870 select CPU_SUPPORTS_64BIT_KERNEL
1871 select CPU_SUPPORTS_HIGHMEM
1872 select CPU_SUPPORTS_HUGEPAGES
1873 select ARCH_HAS_PHYS_TO_DMA
1874 select CPU_HAS_LOAD_STORE_LR
1876 config CPU_LOONGSON1
1880 select CPU_HAS_PREFETCH
1881 select CPU_HAS_LOAD_STORE_LR
1882 select CPU_SUPPORTS_32BIT_KERNEL
1883 select CPU_SUPPORTS_HIGHMEM
1884 select CPU_SUPPORTS_CPUFREQ
1886 config CPU_BMIPS32_3300
1887 select SMP_UP if SMP
1890 config CPU_BMIPS4350
1892 select SYS_SUPPORTS_SMP
1893 select SYS_SUPPORTS_HOTPLUG_CPU
1895 config CPU_BMIPS4380
1897 select MIPS_L1_CACHE_SHIFT_6
1898 select SYS_SUPPORTS_SMP
1899 select SYS_SUPPORTS_HOTPLUG_CPU
1902 config CPU_BMIPS5000
1904 select MIPS_CPU_SCACHE
1905 select MIPS_L1_CACHE_SHIFT_7
1906 select SYS_SUPPORTS_SMP
1907 select SYS_SUPPORTS_HOTPLUG_CPU
1910 config SYS_HAS_CPU_LOONGSON3
1912 select CPU_SUPPORTS_CPUFREQ
1915 config SYS_HAS_CPU_LOONGSON2E
1918 config SYS_HAS_CPU_LOONGSON2F
1920 select CPU_SUPPORTS_CPUFREQ
1921 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1922 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1924 config SYS_HAS_CPU_LOONGSON1B
1927 config SYS_HAS_CPU_LOONGSON1C
1930 config SYS_HAS_CPU_MIPS32_R1
1933 config SYS_HAS_CPU_MIPS32_R2
1936 config SYS_HAS_CPU_MIPS32_R3_5
1939 config SYS_HAS_CPU_MIPS32_R5
1941 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1943 config SYS_HAS_CPU_MIPS32_R6
1945 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1947 config SYS_HAS_CPU_MIPS64_R1
1950 config SYS_HAS_CPU_MIPS64_R2
1953 config SYS_HAS_CPU_MIPS64_R6
1955 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1957 config SYS_HAS_CPU_R3000
1960 config SYS_HAS_CPU_TX39XX
1963 config SYS_HAS_CPU_VR41XX
1966 config SYS_HAS_CPU_R4X00
1969 config SYS_HAS_CPU_TX49XX
1972 config SYS_HAS_CPU_R5000
1975 config SYS_HAS_CPU_R5500
1978 config SYS_HAS_CPU_NEVADA
1981 config SYS_HAS_CPU_R10000
1983 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1985 config SYS_HAS_CPU_RM7000
1988 config SYS_HAS_CPU_SB1
1991 config SYS_HAS_CPU_CAVIUM_OCTEON
1994 config SYS_HAS_CPU_BMIPS
1997 config SYS_HAS_CPU_BMIPS32_3300
1999 select SYS_HAS_CPU_BMIPS
2001 config SYS_HAS_CPU_BMIPS4350
2003 select SYS_HAS_CPU_BMIPS
2005 config SYS_HAS_CPU_BMIPS4380
2007 select SYS_HAS_CPU_BMIPS
2009 config SYS_HAS_CPU_BMIPS5000
2011 select SYS_HAS_CPU_BMIPS
2012 select ARCH_HAS_SYNC_DMA_FOR_CPU
2014 config SYS_HAS_CPU_XLR
2017 config SYS_HAS_CPU_XLP
2021 # CPU may reorder R->R, R->W, W->R, W->W
2022 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2024 config WEAK_ORDERING
2028 # CPU may reorder reads and writes beyond LL/SC
2029 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2031 config WEAK_REORDERING_BEYOND_LLSC
2036 # These two indicate any level of the MIPS32 and MIPS64 architecture
2040 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2044 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2047 # These indicate the revision of the architecture
2051 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2055 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2061 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2063 select HAVE_ARCH_BITREVERSE
2064 select MIPS_ASID_BITS_VARIABLE
2065 select MIPS_CRC_SUPPORT
2068 config TARGET_ISA_REV
2070 default 1 if CPU_MIPSR1
2071 default 2 if CPU_MIPSR2
2072 default 6 if CPU_MIPSR6
2075 Reflects the ISA revision being targeted by the kernel build. This
2076 is effectively the Kconfig equivalent of MIPS_ISA_REV.
2084 config SYS_SUPPORTS_32BIT_KERNEL
2086 config SYS_SUPPORTS_64BIT_KERNEL
2088 config CPU_SUPPORTS_32BIT_KERNEL
2090 config CPU_SUPPORTS_64BIT_KERNEL
2092 config CPU_SUPPORTS_CPUFREQ
2094 config CPU_SUPPORTS_ADDRWINCFG
2096 config CPU_SUPPORTS_HUGEPAGES
2098 depends on !(32BIT && (ARCH_PHYS_ADDR_T_64BIT || EVA))
2099 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2101 config MIPS_PGD_C0_CONTEXT
2103 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2106 # Set to y for ptrace access to watch registers.
2108 config HARDWARE_WATCHPOINTS
2110 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2115 prompt "Kernel code model"
2117 You should only select this option if you have a workload that
2118 actually benefits from 64-bit processing or if your machine has
2119 large memory. You will only be presented a single option in this
2120 menu if your system does not support both 32-bit and 64-bit kernels.
2123 bool "32-bit kernel"
2124 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2127 Select this option if you want to build a 32-bit kernel.
2130 bool "64-bit kernel"
2131 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2133 Select this option if you want to build a 64-bit kernel.
2138 bool "KVM Guest Kernel"
2139 depends on BROKEN_ON_SMP
2141 Select this option if building a guest kernel for KVM (Trap & Emulate)
2144 config KVM_GUEST_TIMER_FREQ
2145 int "Count/Compare Timer Frequency (MHz)"
2146 depends on KVM_GUEST
2149 Set this to non-zero if building a guest kernel for KVM to skip RTC
2150 emulation when determining guest CPU Frequency. Instead, the guest's
2151 timer frequency is specified directly.
2153 config MIPS_VA_BITS_48
2154 bool "48 bits virtual memory"
2157 Support a maximum at least 48 bits of application virtual
2158 memory. Default is 40 bits or less, depending on the CPU.
2159 For page sizes 16k and above, this option results in a small
2160 memory overhead for page tables. For 4k page size, a fourth
2161 level of page tables is added which imposes both a memory
2162 overhead as well as slower TLB fault handling.
2167 prompt "Kernel page size"
2168 default PAGE_SIZE_4KB
2170 config PAGE_SIZE_4KB
2172 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2174 This option select the standard 4kB Linux page size. On some
2175 R3000-family processors this is the only available page size. Using
2176 4kB page size will minimize memory consumption and is therefore
2177 recommended for low memory systems.
2179 config PAGE_SIZE_8KB
2181 depends on CPU_CAVIUM_OCTEON
2182 depends on !MIPS_VA_BITS_48
2184 Using 8kB page size will result in higher performance kernel at
2185 the price of higher memory consumption. This option is available
2186 only on cnMIPS processors. Note that you will need a suitable Linux
2187 distribution to support this.
2189 config PAGE_SIZE_16KB
2191 depends on !CPU_R3000 && !CPU_TX39XX
2193 Using 16kB page size will result in higher performance kernel at
2194 the price of higher memory consumption. This option is available on
2195 all non-R3000 family processors. Note that you will need a suitable
2196 Linux distribution to support this.
2198 config PAGE_SIZE_32KB
2200 depends on CPU_CAVIUM_OCTEON
2201 depends on !MIPS_VA_BITS_48
2203 Using 32kB page size will result in higher performance kernel at
2204 the price of higher memory consumption. This option is available
2205 only on cnMIPS cores. Note that you will need a suitable Linux
2206 distribution to support this.
2208 config PAGE_SIZE_64KB
2210 depends on !CPU_R3000 && !CPU_TX39XX
2212 Using 64kB page size will result in higher performance kernel at
2213 the price of higher memory consumption. This option is available on
2214 all non-R3000 family processor. Not that at the time of this
2215 writing this option is still high experimental.
2219 config FORCE_MAX_ZONEORDER
2220 int "Maximum zone order"
2221 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2222 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2223 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2224 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2225 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2226 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2230 The kernel memory allocator divides physically contiguous memory
2231 blocks into "zones", where each zone is a power of two number of
2232 pages. This option selects the largest power of two that the kernel
2233 keeps in the memory allocator. If you need to allocate very large
2234 blocks of physically contiguous memory, then you may need to
2235 increase this value.
2237 This config option is actually maximum order plus one. For example,
2238 a value of 11 means that the largest free memory block is 2^10 pages.
2240 The page size is not necessarily 4KB. Keep this in mind
2241 when choosing a value for this option.
2246 config IP22_CPU_SCACHE
2251 # Support for a MIPS32 / MIPS64 style S-caches
2253 config MIPS_CPU_SCACHE
2257 config R5000_CPU_SCACHE
2261 config RM7000_CPU_SCACHE
2265 config SIBYTE_DMA_PAGEOPS
2266 bool "Use DMA to clear/copy pages"
2269 Instead of using the CPU to zero and copy pages, use a Data Mover
2270 channel. These DMA channels are otherwise unused by the standard
2271 SiByte Linux port. Seems to give a small performance benefit.
2273 config CPU_HAS_PREFETCH
2276 config CPU_GENERIC_DUMP_TLB
2278 default y if !(CPU_R3000 || CPU_TX39XX)
2280 config MIPS_FP_SUPPORT
2281 bool "Floating Point support" if EXPERT
2284 Select y to include support for floating point in the kernel
2285 including initialization of FPU hardware, FP context save & restore
2286 and emulation of an FPU where necessary. Without this support any
2287 userland program attempting to use floating point instructions will
2290 If you know that your userland will not attempt to use floating point
2291 instructions then you can say n here to shrink the kernel a little.
2295 config CPU_R2300_FPU
2297 depends on MIPS_FP_SUPPORT
2298 default y if CPU_R3000 || CPU_TX39XX
2305 depends on MIPS_FP_SUPPORT
2306 default y if !CPU_R2300_FPU
2308 config CPU_R4K_CACHE_TLB
2310 default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON)
2313 bool "MIPS MT SMP support (1 TC on each available VPE)"
2315 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2316 select CPU_MIPSR2_IRQ_VI
2317 select CPU_MIPSR2_IRQ_EI
2322 select SYS_SUPPORTS_SMP
2323 select SYS_SUPPORTS_SCHED_SMT
2324 select MIPS_PERF_SHARED_TC_COUNTERS
2326 This is a kernel model which is known as SMVP. This is supported
2327 on cores with the MT ASE and uses the available VPEs to implement
2328 virtual processors which supports SMP. This is equivalent to the
2329 Intel Hyperthreading feature. For further information go to
2330 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2336 bool "SMT (multithreading) scheduler support"
2337 depends on SYS_SUPPORTS_SCHED_SMT
2340 SMT scheduler support improves the CPU scheduler's decision making
2341 when dealing with MIPS MT enabled cores at a cost of slightly
2342 increased overhead in some places. If unsure say N here.
2344 config SYS_SUPPORTS_SCHED_SMT
2347 config SYS_SUPPORTS_MULTITHREADING
2350 config MIPS_MT_FPAFF
2351 bool "Dynamic FPU affinity for FP-intensive threads"
2353 depends on MIPS_MT_SMP
2355 config MIPSR2_TO_R6_EMULATOR
2356 bool "MIPS R2-to-R6 emulator"
2357 depends on CPU_MIPSR6
2358 depends on MIPS_FP_SUPPORT
2361 Choose this option if you want to run non-R6 MIPS userland code.
2362 Even if you say 'Y' here, the emulator will still be disabled by
2363 default. You can enable it using the 'mipsr2emu' kernel option.
2364 The only reason this is a build-time option is to save ~14K from the
2367 config SYS_SUPPORTS_VPE_LOADER
2369 depends on SYS_SUPPORTS_MULTITHREADING
2371 Indicates that the platform supports the VPE loader, and provides
2374 config MIPS_VPE_LOADER
2375 bool "VPE loader support."
2376 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2377 select CPU_MIPSR2_IRQ_VI
2378 select CPU_MIPSR2_IRQ_EI
2381 Includes a loader for loading an elf relocatable object
2382 onto another VPE and running it.
2384 config MIPS_VPE_LOADER_CMP
2387 depends on MIPS_VPE_LOADER && MIPS_CMP
2389 config MIPS_VPE_LOADER_MT
2392 depends on MIPS_VPE_LOADER && !MIPS_CMP
2394 config MIPS_VPE_LOADER_TOM
2395 bool "Load VPE program into memory hidden from linux"
2396 depends on MIPS_VPE_LOADER
2399 The loader can use memory that is present but has been hidden from
2400 Linux using the kernel command line option "mem=xxMB". It's up to
2401 you to ensure the amount you put in the option and the space your
2402 program requires is less or equal to the amount physically present.
2404 config MIPS_VPE_APSP_API
2405 bool "Enable support for AP/SP API (RTLX)"
2406 depends on MIPS_VPE_LOADER
2408 config MIPS_VPE_APSP_API_CMP
2411 depends on MIPS_VPE_APSP_API && MIPS_CMP
2413 config MIPS_VPE_APSP_API_MT
2416 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2419 bool "MIPS CMP framework support (DEPRECATED)"
2420 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2423 select SYS_SUPPORTS_SMP
2424 select WEAK_ORDERING
2427 Select this if you are using a bootloader which implements the "CMP
2428 framework" protocol (ie. YAMON) and want your kernel to make use of
2429 its ability to start secondary CPUs.
2431 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2435 bool "MIPS Coherent Processing System support"
2436 depends on SYS_SUPPORTS_MIPS_CPS
2438 select MIPS_CPS_PM if HOTPLUG_CPU
2440 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2441 select SYS_SUPPORTS_HOTPLUG_CPU
2442 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2443 select SYS_SUPPORTS_SMP
2444 select WEAK_ORDERING
2446 Select this if you wish to run an SMP kernel across multiple cores
2447 within a MIPS Coherent Processing System. When this option is
2448 enabled the kernel will probe for other cores and boot them with
2449 no external assistance. It is safe to enable this when hardware
2450 support is unavailable.
2463 config SB1_PASS_2_WORKAROUNDS
2465 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2468 config SB1_PASS_2_1_WORKAROUNDS
2470 depends on CPU_SB1 && CPU_SB1_PASS_2
2474 prompt "SmartMIPS or microMIPS ASE support"
2476 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2479 Select this if you want neither microMIPS nor SmartMIPS support
2481 config CPU_HAS_SMARTMIPS
2482 depends on SYS_SUPPORTS_SMARTMIPS
2485 SmartMIPS is a extension of the MIPS32 architecture aimed at
2486 increased security at both hardware and software level for
2487 smartcards. Enabling this option will allow proper use of the
2488 SmartMIPS instructions by Linux applications. However a kernel with
2489 this option will not work on a MIPS core without SmartMIPS core. If
2490 you don't know you probably don't have SmartMIPS and should say N
2493 config CPU_MICROMIPS
2494 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2497 When this option is enabled the kernel will be built using the
2503 bool "Support for the MIPS SIMD Architecture"
2504 depends on CPU_SUPPORTS_MSA
2505 depends on MIPS_FP_SUPPORT
2506 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2508 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2509 and a set of SIMD instructions to operate on them. When this option
2510 is enabled the kernel will support allocating & switching MSA
2511 vector register contexts. If you know that your kernel will only be
2512 running on CPUs which do not support MSA or that your userland will
2513 not be making use of it then you may wish to say N here to reduce
2514 the size & complexity of your kernel.
2527 config CPU_HAS_LOAD_STORE_LR
2530 CPU has support for unaligned load and store instructions:
2531 LWL, LWR, SWL, SWR (Load/store word left/right).
2532 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit systems).
2535 # Vectored interrupt mode is an R2 feature
2537 config CPU_MIPSR2_IRQ_VI
2541 # Extended interrupt mode is an R2 feature
2543 config CPU_MIPSR2_IRQ_EI
2548 depends on !CPU_R3000
2554 config CPU_DADDI_WORKAROUNDS
2557 config CPU_R4000_WORKAROUNDS
2559 select CPU_R4400_WORKAROUNDS
2561 config CPU_R4400_WORKAROUNDS
2564 config MIPS_ASID_SHIFT
2566 default 6 if CPU_R3000 || CPU_TX39XX
2569 config MIPS_ASID_BITS
2571 default 0 if MIPS_ASID_BITS_VARIABLE
2572 default 6 if CPU_R3000 || CPU_TX39XX
2575 config MIPS_ASID_BITS_VARIABLE
2578 config MIPS_CRC_SUPPORT
2582 # - Highmem only makes sense for the 32-bit kernel.
2583 # - The current highmem code will only work properly on physically indexed
2584 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2585 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2586 # moment we protect the user and offer the highmem option only on machines
2587 # where it's known to be safe. This will not offer highmem on a few systems
2588 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2589 # indexed CPUs but we're playing safe.
2590 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2591 # know they might have memory configurations that could make use of highmem
2595 bool "High Memory Support"
2596 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2598 config CPU_SUPPORTS_HIGHMEM
2601 config SYS_SUPPORTS_HIGHMEM
2604 config SYS_SUPPORTS_SMARTMIPS
2607 config SYS_SUPPORTS_MICROMIPS
2610 config SYS_SUPPORTS_MIPS16
2613 This option must be set if a kernel might be executed on a MIPS16-
2614 enabled CPU even if MIPS16 is not actually being used. In other
2615 words, it makes the kernel MIPS16-tolerant.
2617 config CPU_SUPPORTS_MSA
2620 config ARCH_FLATMEM_ENABLE
2622 depends on !NUMA && !CPU_LOONGSON2
2624 config ARCH_DISCONTIGMEM_ENABLE
2626 default y if SGI_IP27
2628 Say Y to support efficient handling of discontiguous physical memory,
2629 for architectures which are either NUMA (Non-Uniform Memory Access)
2630 or have huge holes in the physical address space for other reasons.
2631 See <file:Documentation/vm/numa.rst> for more.
2633 config ARCH_SPARSEMEM_ENABLE
2635 select SPARSEMEM_STATIC
2639 depends on SYS_SUPPORTS_NUMA
2641 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2642 Access). This option improves performance on systems with more
2643 than two nodes; on two node systems it is generally better to
2644 leave it disabled; on single node systems disable this option
2647 config SYS_SUPPORTS_NUMA
2651 bool "Relocatable kernel"
2652 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2654 This builds a kernel image that retains relocation information
2655 so it can be loaded someplace besides the default 1MB.
2656 The relocations make the kernel binary about 15% larger,
2657 but are discarded at runtime
2659 config RELOCATION_TABLE_SIZE
2660 hex "Relocation table size"
2661 depends on RELOCATABLE
2662 range 0x0 0x01000000
2663 default "0x00100000"
2665 A table of relocation data will be appended to the kernel binary
2666 and parsed at boot to fix up the relocated kernel.
2668 This option allows the amount of space reserved for the table to be
2669 adjusted, although the default of 1Mb should be ok in most cases.
2671 The build will fail and a valid size suggested if this is too small.
2673 If unsure, leave at the default value.
2675 config RANDOMIZE_BASE
2676 bool "Randomize the address of the kernel image"
2677 depends on RELOCATABLE
2679 Randomizes the physical and virtual address at which the
2680 kernel image is loaded, as a security feature that
2681 deters exploit attempts relying on knowledge of the location
2682 of kernel internals.
2684 Entropy is generated using any coprocessor 0 registers available.
2686 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2690 config RANDOMIZE_BASE_MAX_OFFSET
2691 hex "Maximum kASLR offset" if EXPERT
2692 depends on RANDOMIZE_BASE
2693 range 0x0 0x40000000 if EVA || 64BIT
2694 range 0x0 0x08000000
2695 default "0x01000000"
2697 When kASLR is active, this provides the maximum offset that will
2698 be applied to the kernel image. It should be set according to the
2699 amount of physical RAM available in the target system minus
2700 PHYSICAL_START and must be a power of 2.
2702 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2703 EVA or 64-bit. The default is 16Mb.
2708 depends on NEED_MULTIPLE_NODES
2710 config HW_PERF_EVENTS
2711 bool "Enable hardware performance counter support for perf events"
2712 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2715 Enable hardware performance counter support for perf events. If
2716 disabled, perf events will use software events only.
2719 bool "Multi-Processing support"
2720 depends on SYS_SUPPORTS_SMP
2722 This enables support for systems with more than one CPU. If you have
2723 a system with only one CPU, say N. If you have a system with more
2724 than one CPU, say Y.
2726 If you say N here, the kernel will run on uni- and multiprocessor
2727 machines, but will use only one CPU of a multiprocessor machine. If
2728 you say Y here, the kernel will run on many, but not all,
2729 uniprocessor machines. On a uniprocessor machine, the kernel
2730 will run faster if you say N here.
2732 People using multiprocessor machines who say Y here should also say
2733 Y to "Enhanced Real Time Clock Support", below.
2735 See also the SMP-HOWTO available at
2736 <http://www.tldp.org/docs.html#howto>.
2738 If you don't know what to do here, say N.
2741 bool "Support for hot-pluggable CPUs"
2742 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2744 Say Y here to allow turning CPUs off and on. CPUs can be
2745 controlled through /sys/devices/system/cpu.
2746 (Note: power management support will enable this option
2747 automatically on SMP systems. )
2748 Say N if you want to disable CPU hotplug.
2753 config SYS_SUPPORTS_MIPS_CMP
2756 config SYS_SUPPORTS_MIPS_CPS
2759 config SYS_SUPPORTS_SMP
2762 config NR_CPUS_DEFAULT_4
2765 config NR_CPUS_DEFAULT_8
2768 config NR_CPUS_DEFAULT_16
2771 config NR_CPUS_DEFAULT_32
2774 config NR_CPUS_DEFAULT_64
2778 int "Maximum number of CPUs (2-256)"
2781 default "4" if NR_CPUS_DEFAULT_4
2782 default "8" if NR_CPUS_DEFAULT_8
2783 default "16" if NR_CPUS_DEFAULT_16
2784 default "32" if NR_CPUS_DEFAULT_32
2785 default "64" if NR_CPUS_DEFAULT_64
2787 This allows you to specify the maximum number of CPUs which this
2788 kernel will support. The maximum supported value is 32 for 32-bit
2789 kernel and 64 for 64-bit kernels; the minimum value which makes
2790 sense is 1 for Qemu (useful only for kernel debugging purposes)
2791 and 2 for all others.
2793 This is purely to save memory - each supported CPU adds
2794 approximately eight kilobytes to the kernel image. For best
2795 performance should round up your number of processors to the next
2798 config MIPS_PERF_SHARED_TC_COUNTERS
2801 config MIPS_NR_CPU_NR_MAP_1024
2804 config MIPS_NR_CPU_NR_MAP
2807 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2808 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2811 # Timer Interrupt Frequency Configuration
2815 prompt "Timer frequency"
2818 Allows the configuration of the timer frequency.
2821 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2824 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2827 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2830 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2833 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2836 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2839 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2842 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2846 config SYS_SUPPORTS_24HZ
2849 config SYS_SUPPORTS_48HZ
2852 config SYS_SUPPORTS_100HZ
2855 config SYS_SUPPORTS_128HZ
2858 config SYS_SUPPORTS_250HZ
2861 config SYS_SUPPORTS_256HZ
2864 config SYS_SUPPORTS_1000HZ
2867 config SYS_SUPPORTS_1024HZ
2870 config SYS_SUPPORTS_ARBIT_HZ
2872 default y if !SYS_SUPPORTS_24HZ && \
2873 !SYS_SUPPORTS_48HZ && \
2874 !SYS_SUPPORTS_100HZ && \
2875 !SYS_SUPPORTS_128HZ && \
2876 !SYS_SUPPORTS_250HZ && \
2877 !SYS_SUPPORTS_256HZ && \
2878 !SYS_SUPPORTS_1000HZ && \
2879 !SYS_SUPPORTS_1024HZ
2885 default 100 if HZ_100
2886 default 128 if HZ_128
2887 default 250 if HZ_250
2888 default 256 if HZ_256
2889 default 1000 if HZ_1000
2890 default 1024 if HZ_1024
2893 def_bool HIGH_RES_TIMERS
2896 bool "Kexec system call"
2899 kexec is a system call that implements the ability to shutdown your
2900 current kernel, and to start another kernel. It is like a reboot
2901 but it is independent of the system firmware. And like a reboot
2902 you can start any kernel with it, not just Linux.
2904 The name comes from the similarity to the exec system call.
2906 It is an ongoing process to be certain the hardware in a machine
2907 is properly shutdown, so do not be surprised if this code does not
2908 initially work for you. As of this writing the exact hardware
2909 interface is strongly in flux, so no good recommendation can be
2913 bool "Kernel crash dumps"
2915 Generate crash dump after being started by kexec.
2916 This should be normally only set in special crash dump kernels
2917 which are loaded in the main kernel with kexec-tools into
2918 a specially reserved region and then later executed after
2919 a crash by kdump/kexec. The crash dump kernel must be compiled
2920 to a memory address not used by the main kernel or firmware using
2923 config PHYSICAL_START
2924 hex "Physical address where the kernel is loaded"
2925 default "0xffffffff84000000"
2926 depends on CRASH_DUMP
2928 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2929 If you plan to use kernel for capturing the crash dump change
2930 this value to start of the reserved region (the "X" value as
2931 specified in the "crashkernel=YM@XM" command line boot parameter
2932 passed to the panic-ed kernel).
2935 bool "Enable seccomp to safely compute untrusted bytecode"
2939 This kernel feature is useful for number crunching applications
2940 that may need to compute untrusted bytecode during their
2941 execution. By using pipes or other transports made available to
2942 the process as file descriptors supporting the read/write
2943 syscalls, it's possible to isolate those applications in
2944 their own address space using seccomp. Once seccomp is
2945 enabled via /proc/<pid>/seccomp, it cannot be disabled
2946 and the task is only allowed to execute a few safe syscalls
2947 defined by each seccomp mode.
2949 If unsure, say Y. Only embedded should say N here.
2951 config MIPS_O32_FP64_SUPPORT
2952 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
2953 depends on 32BIT || MIPS32_O32
2955 When this is enabled, the kernel will support use of 64-bit floating
2956 point registers with binaries using the O32 ABI along with the
2957 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2958 32-bit MIPS systems this support is at the cost of increasing the
2959 size and complexity of the compiled FPU emulator. Thus if you are
2960 running a MIPS32 system and know that none of your userland binaries
2961 will require 64-bit floating point, you may wish to reduce the size
2962 of your kernel & potentially improve FP emulation performance by
2965 Although binutils currently supports use of this flag the details
2966 concerning its effect upon the O32 ABI in userland are still being
2967 worked on. In order to avoid userland becoming dependant upon current
2968 behaviour before the details have been finalised, this option should
2969 be considered experimental and only enabled by those working upon
2977 select OF_EARLY_FLATTREE
2987 prompt "Kernel appended dtb support" if USE_OF
2988 default MIPS_NO_APPENDED_DTB
2990 config MIPS_NO_APPENDED_DTB
2993 Do not enable appended dtb support.
2995 config MIPS_ELF_APPENDED_DTB
2998 With this option, the boot code will look for a device tree binary
2999 DTB) included in the vmlinux ELF section .appended_dtb. By default
3000 it is empty and the DTB can be appended using binutils command
3003 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
3005 This is meant as a backward compatiblity convenience for those
3006 systems with a bootloader that can't be upgraded to accommodate
3007 the documented boot protocol using a device tree.
3009 config MIPS_RAW_APPENDED_DTB
3010 bool "vmlinux.bin or vmlinuz.bin"
3012 With this option, the boot code will look for a device tree binary
3013 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
3014 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
3016 This is meant as a backward compatibility convenience for those
3017 systems with a bootloader that can't be upgraded to accommodate
3018 the documented boot protocol using a device tree.
3020 Beware that there is very little in terms of protection against
3021 this option being confused by leftover garbage in memory that might
3022 look like a DTB header after a reboot if no actual DTB is appended
3023 to vmlinux.bin. Do not leave this option active in a production kernel
3024 if you don't intend to always append a DTB.
3028 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
3029 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
3032 default MIPS_CMDLINE_FROM_BOOTLOADER
3034 config MIPS_CMDLINE_FROM_DTB
3036 bool "Dtb kernel arguments if available"
3038 config MIPS_CMDLINE_DTB_EXTEND
3040 bool "Extend dtb kernel arguments with bootloader arguments"
3042 config MIPS_CMDLINE_FROM_BOOTLOADER
3043 bool "Bootloader kernel arguments if available"
3045 config MIPS_CMDLINE_BUILTIN_EXTEND
3046 depends on CMDLINE_BOOL
3047 bool "Extend builtin kernel arguments with bootloader arguments"
3052 config LOCKDEP_SUPPORT
3056 config STACKTRACE_SUPPORT
3060 config PGTABLE_LEVELS
3062 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3063 default 3 if 64BIT && (!PAGE_SIZE_64KB || MIPS_VA_BITS_48)
3066 config MIPS_AUTO_PFN_OFFSET
3069 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3071 config PCI_DRIVERS_GENERIC
3072 select PCI_DOMAINS_GENERIC if PCI
3075 config PCI_DRIVERS_LEGACY
3076 def_bool !PCI_DRIVERS_GENERIC
3077 select NO_GENERIC_PCI_IOPORT_MAP
3078 select PCI_DOMAINS if PCI
3081 # ISA support is now enabled via select. Too many systems still have the one
3082 # or other ISA chip on the board that users don't know about so don't expect
3083 # users to choose the right thing ...
3089 bool "TURBOchannel support"
3090 depends on MACH_DECSTATION
3092 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3093 processors. TURBOchannel programming specifications are available
3095 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3097 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3098 Linux driver support status is documented at:
3099 <http://www.linux-mips.org/wiki/DECstation>
3105 config ARCH_MMAP_RND_BITS_MIN
3109 config ARCH_MMAP_RND_BITS_MAX
3113 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3116 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3123 select MIPS_EXTERNAL_TIMER
3136 config MIPS32_COMPAT
3142 config SYSVIPC_COMPAT
3146 bool "Kernel support for o32 binaries"
3148 select ARCH_WANT_OLD_COMPAT_IPC
3150 select MIPS32_COMPAT
3151 select SYSVIPC_COMPAT if SYSVIPC
3153 Select this option if you want to run o32 binaries. These are pure
3154 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3155 existing binaries are in this format.
3160 bool "Kernel support for n32 binaries"
3162 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3164 select MIPS32_COMPAT
3165 select SYSVIPC_COMPAT if SYSVIPC
3167 Select this option if you want to run n32 binaries. These are
3168 64-bit binaries using 32-bit quantities for addressing and certain
3169 data that would normally be 64-bit. They are used in special
3176 default y if MIPS32_O32 || MIPS32_N32
3179 menu "Power management options"
3181 config ARCH_HIBERNATION_POSSIBLE
3183 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3185 config ARCH_SUSPEND_POSSIBLE
3187 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3189 source "kernel/power/Kconfig"
3193 config MIPS_EXTERNAL_TIMER
3196 menu "CPU Power Management"
3198 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3199 source "drivers/cpufreq/Kconfig"
3202 source "drivers/cpuidle/Kconfig"
3206 source "drivers/firmware/Kconfig"
3208 source "arch/mips/kvm/Kconfig"