1 # SPDX-License-Identifier: GPL-2.0
5 select ARCH_BINFMT_ELF_STATE
6 select ARCH_CLOCKSOURCE_DATA
7 select ARCH_DISCARD_MEMBLOCK
8 select ARCH_HAS_ELF_RANDOMIZE
9 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
10 select ARCH_SUPPORTS_UPROBES
11 select ARCH_USE_BUILTIN_BSWAP
12 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
13 select ARCH_USE_QUEUED_RWLOCKS
14 select ARCH_USE_QUEUED_SPINLOCKS
15 select ARCH_WANT_IPC_PARSE_VERSION
16 select BUILDTIME_EXTABLE_SORT
17 select CLONE_BACKWARDS
18 select CPU_PM if CPU_IDLE
20 select GENERIC_ATOMIC64 if !64BIT
21 select GENERIC_CLOCKEVENTS
22 select GENERIC_CMOS_UPDATE
23 select GENERIC_CPU_AUTOPROBE
24 select GENERIC_IRQ_PROBE
25 select GENERIC_IRQ_SHOW
26 select GENERIC_LIB_ASHLDI3
27 select GENERIC_LIB_ASHRDI3
28 select GENERIC_LIB_CMPDI2
29 select GENERIC_LIB_LSHRDI3
30 select GENERIC_LIB_UCMPDI2
31 select GENERIC_PCI_IOMAP
32 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
33 select GENERIC_SMP_IDLE_THREAD
34 select GENERIC_TIME_VSYSCALL
35 select HANDLE_DOMAIN_IRQ
36 select HAVE_ARCH_COMPILER_H
37 select HAVE_ARCH_JUMP_LABEL
39 select HAVE_ARCH_MMAP_RND_BITS if MMU
40 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
41 select HAVE_ARCH_SECCOMP_FILTER
42 select HAVE_ARCH_TRACEHOOK
43 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
44 select HAVE_CBPF_JIT if (!64BIT && !CPU_MICROMIPS)
45 select HAVE_EBPF_JIT if (64BIT && !CPU_MICROMIPS)
46 select HAVE_CONTEXT_TRACKING
47 select HAVE_COPY_THREAD_TLS
48 select HAVE_C_RECORDMCOUNT
49 select HAVE_DEBUG_KMEMLEAK
50 select HAVE_DEBUG_STACKOVERFLOW
51 select HAVE_DMA_CONTIGUOUS
52 select HAVE_DYNAMIC_FTRACE
53 select HAVE_EXIT_THREAD
54 select HAVE_FTRACE_MCOUNT_RECORD
55 select HAVE_FUNCTION_GRAPH_TRACER
56 select HAVE_FUNCTION_TRACER
57 select HAVE_GENERIC_DMA_COHERENT
59 select HAVE_IRQ_EXIT_ON_IRQ_STACK
60 select HAVE_IRQ_TIME_ACCOUNTING
62 select HAVE_KRETPROBES
64 select HAVE_MEMBLOCK_NODE_MAP
65 select HAVE_MOD_ARCH_SPECIFIC
68 select HAVE_PERF_EVENTS
69 select HAVE_REGS_AND_STACK_ACCESS_API
71 select HAVE_STACKPROTECTOR
72 select HAVE_SYSCALL_TRACEPOINTS
73 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
74 select IRQ_FORCED_THREADING
75 select MODULES_USE_ELF_RELA if MODULES && 64BIT
76 select MODULES_USE_ELF_REL if MODULES
77 select PERF_USE_VMALLOC
78 select RTC_LIB if !MACH_LOONGSON64
79 select SYSCTL_EXCEPTION_TRACE
82 menu "Machine selection"
89 bool "Generic board-agnostic MIPS kernel"
93 select CLKSRC_MIPS_GIC
95 select CPU_MIPSR2_IRQ_VI
96 select CPU_MIPSR2_IRQ_EI
98 select DMA_PERDEV_COHERENT
102 select MIPS_AUTO_PFN_OFFSET
103 select MIPS_CPU_SCACHE
105 select MIPS_L1_CACHE_SHIFT_7
106 select NO_EXCEPT_FILL
107 select PCI_DRIVERS_GENERIC
111 select SYS_HAS_CPU_MIPS32_R1
112 select SYS_HAS_CPU_MIPS32_R2
113 select SYS_HAS_CPU_MIPS32_R6
114 select SYS_HAS_CPU_MIPS64_R1
115 select SYS_HAS_CPU_MIPS64_R2
116 select SYS_HAS_CPU_MIPS64_R6
117 select SYS_SUPPORTS_32BIT_KERNEL
118 select SYS_SUPPORTS_64BIT_KERNEL
119 select SYS_SUPPORTS_BIG_ENDIAN
120 select SYS_SUPPORTS_HIGHMEM
121 select SYS_SUPPORTS_LITTLE_ENDIAN
122 select SYS_SUPPORTS_MICROMIPS
123 select SYS_SUPPORTS_MIPS_CPS
124 select SYS_SUPPORTS_MIPS16
125 select SYS_SUPPORTS_MULTITHREADING
126 select SYS_SUPPORTS_RELOCATABLE
127 select SYS_SUPPORTS_SMARTMIPS
128 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
129 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
130 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
131 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
132 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
133 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
136 Select this to build a kernel which aims to support multiple boards,
137 generally using a flattened device tree passed from the bootloader
138 using the boot protocol defined in the UHI (Unified Hosting
139 Interface) specification.
142 bool "Alchemy processor based machines"
143 select PHYS_ADDR_T_64BIT
147 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
148 select SYS_HAS_CPU_MIPS32_R1
149 select SYS_SUPPORTS_32BIT_KERNEL
150 select SYS_SUPPORTS_APM_EMULATION
152 select SYS_SUPPORTS_ZBOOT
156 bool "Texas Instruments AR7"
158 select DMA_NONCOHERENT
162 select NO_EXCEPT_FILL
164 select SYS_HAS_CPU_MIPS32_R1
165 select SYS_HAS_EARLY_PRINTK
166 select SYS_SUPPORTS_32BIT_KERNEL
167 select SYS_SUPPORTS_LITTLE_ENDIAN
168 select SYS_SUPPORTS_MIPS16
169 select SYS_SUPPORTS_ZBOOT_UART16550
174 Support for the Texas Instruments AR7 System-on-a-Chip
175 family: TNETD7100, 7200 and 7300.
178 bool "Atheros AR231x/AR531x SoC support"
181 select DMA_NONCOHERENT
184 select SYS_HAS_CPU_MIPS32_R1
185 select SYS_SUPPORTS_BIG_ENDIAN
186 select SYS_SUPPORTS_32BIT_KERNEL
187 select SYS_HAS_EARLY_PRINTK
189 Support for Atheros AR231x and Atheros AR531x based boards
192 bool "Atheros AR71XX/AR724X/AR913X based boards"
193 select ARCH_HAS_RESET_CONTROLLER
197 select DMA_NONCOHERENT
205 select SYS_HAS_CPU_MIPS32_R2
206 select SYS_HAS_EARLY_PRINTK
207 select SYS_SUPPORTS_32BIT_KERNEL
208 select SYS_SUPPORTS_BIG_ENDIAN
209 select SYS_SUPPORTS_MIPS16
210 select SYS_SUPPORTS_ZBOOT_UART_PROM
212 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
214 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
217 bool "Broadcom Generic BMIPS kernel"
218 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
219 select ARCH_HAS_PHYS_TO_DMA
221 select NO_EXCEPT_FILL
227 select BCM6345_L1_IRQ
228 select BCM7038_L1_IRQ
229 select BCM7120_L2_IRQ
230 select BRCMSTB_L2_IRQ
232 select DMA_NONCOHERENT
233 select SYS_SUPPORTS_32BIT_KERNEL
234 select SYS_SUPPORTS_LITTLE_ENDIAN
235 select SYS_SUPPORTS_BIG_ENDIAN
236 select SYS_SUPPORTS_HIGHMEM
237 select SYS_HAS_CPU_BMIPS32_3300
238 select SYS_HAS_CPU_BMIPS4350
239 select SYS_HAS_CPU_BMIPS4380
240 select SYS_HAS_CPU_BMIPS5000
242 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
243 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
244 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
245 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
246 select HARDIRQS_SW_RESEND
248 Build a generic DT-based kernel image that boots on select
249 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
250 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
251 must be set appropriately for your board.
254 bool "Broadcom BCM47XX based boards"
258 select DMA_NONCOHERENT
261 select SYS_HAS_CPU_MIPS32_R1
262 select NO_EXCEPT_FILL
263 select SYS_SUPPORTS_32BIT_KERNEL
264 select SYS_SUPPORTS_LITTLE_ENDIAN
265 select SYS_SUPPORTS_MIPS16
266 select SYS_SUPPORTS_ZBOOT
267 select SYS_HAS_EARLY_PRINTK
268 select USE_GENERIC_EARLY_PRINTK_8250
270 select LEDS_GPIO_REGISTER
273 select BCM47XX_SSB if !BCM47XX_BCMA
275 Support for BCM47XX based boards
278 bool "Broadcom BCM63XX based boards"
283 select DMA_NONCOHERENT
285 select SYS_SUPPORTS_32BIT_KERNEL
286 select SYS_SUPPORTS_BIG_ENDIAN
287 select SYS_HAS_EARLY_PRINTK
291 select MIPS_L1_CACHE_SHIFT_4
294 Support for BCM63XX based boards
301 select DMA_NONCOHERENT
307 select PCI_GT64XXX_PCI0
309 select SYS_HAS_CPU_NEVADA
310 select SYS_HAS_EARLY_PRINTK
311 select SYS_SUPPORTS_32BIT_KERNEL
312 select SYS_SUPPORTS_64BIT_KERNEL
313 select SYS_SUPPORTS_LITTLE_ENDIAN
314 select USE_GENERIC_EARLY_PRINTK_8250
316 config MACH_DECSTATION
320 select CEVT_R4K if CPU_R4X00
322 select CSRC_R4K if CPU_R4X00
323 select CPU_DADDI_WORKAROUNDS if 64BIT
324 select CPU_R4000_WORKAROUNDS if 64BIT
325 select CPU_R4400_WORKAROUNDS if 64BIT
326 select DMA_NONCOHERENT
329 select SYS_HAS_CPU_R3000
330 select SYS_HAS_CPU_R4X00
331 select SYS_SUPPORTS_32BIT_KERNEL
332 select SYS_SUPPORTS_64BIT_KERNEL
333 select SYS_SUPPORTS_LITTLE_ENDIAN
334 select SYS_SUPPORTS_128HZ
335 select SYS_SUPPORTS_256HZ
336 select SYS_SUPPORTS_1024HZ
337 select MIPS_L1_CACHE_SHIFT_4
339 This enables support for DEC's MIPS based workstations. For details
340 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
341 DECstation porting pages on <http://decstation.unix-ag.org/>.
343 If you have one of the following DECstation Models you definitely
344 want to choose R4xx0 for the CPU Type:
351 otherwise choose R3000.
354 bool "Jazz family of machines"
355 select ARCH_MIGHT_HAVE_PC_PARPORT
356 select ARCH_MIGHT_HAVE_PC_SERIO
359 select ARCH_MAY_HAVE_PC_FDC
362 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
363 select GENERIC_ISA_DMA
364 select HAVE_PCSPKR_PLATFORM
369 select SYS_HAS_CPU_R4X00
370 select SYS_SUPPORTS_32BIT_KERNEL
371 select SYS_SUPPORTS_64BIT_KERNEL
372 select SYS_SUPPORTS_100HZ
374 This a family of machines based on the MIPS R4030 chipset which was
375 used by several vendors to build RISC/os and Windows NT workstations.
376 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
377 Olivetti M700-10 workstations.
380 bool "Ingenic SoC based machines"
381 select SYS_SUPPORTS_32BIT_KERNEL
382 select SYS_SUPPORTS_LITTLE_ENDIAN
383 select SYS_SUPPORTS_ZBOOT_UART16550
384 select DMA_NONCOHERENT
389 select GENERIC_IRQ_CHIP
395 bool "Lantiq based platforms"
396 select DMA_NONCOHERENT
400 select SYS_HAS_CPU_MIPS32_R1
401 select SYS_HAS_CPU_MIPS32_R2
402 select SYS_SUPPORTS_BIG_ENDIAN
403 select SYS_SUPPORTS_32BIT_KERNEL
404 select SYS_SUPPORTS_MIPS16
405 select SYS_SUPPORTS_MULTITHREADING
406 select SYS_SUPPORTS_VPE_LOADER
407 select SYS_HAS_EARLY_PRINTK
414 select PINCTRL_LANTIQ
415 select ARCH_HAS_RESET_CONTROLLER
416 select RESET_CONTROLLER
419 bool "LASAT Networks platforms"
423 select DMA_NONCOHERENT
424 select SYS_HAS_EARLY_PRINTK
427 select PCI_GT64XXX_PCI0
429 select R5000_CPU_SCACHE
430 select SYS_HAS_CPU_R5000
431 select SYS_SUPPORTS_32BIT_KERNEL
432 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
433 select SYS_SUPPORTS_LITTLE_ENDIAN
435 config MACH_LOONGSON32
436 bool "Loongson-1 family of machines"
437 select SYS_SUPPORTS_ZBOOT
439 This enables support for the Loongson-1 family of machines.
441 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
442 the Institute of Computing Technology (ICT), Chinese Academy of
445 config MACH_LOONGSON64
446 bool "Loongson-2/3 family of machines"
447 select SYS_SUPPORTS_ZBOOT
449 This enables the support of Loongson-2/3 family of machines.
451 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
452 family of multi-core CPUs. They are both 64-bit general-purpose
453 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
454 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
455 in the People's Republic of China. The chief architect is Professor
458 config MACH_PISTACHIO
459 bool "IMG Pistachio SoC based boards"
463 select CLKSRC_MIPS_GIC
466 select DMA_NONCOHERENT
471 select MIPS_CPU_SCACHE
475 select SYS_HAS_CPU_MIPS32_R2
476 select SYS_SUPPORTS_32BIT_KERNEL
477 select SYS_SUPPORTS_LITTLE_ENDIAN
478 select SYS_SUPPORTS_MIPS_CPS
479 select SYS_SUPPORTS_MULTITHREADING
480 select SYS_SUPPORTS_RELOCATABLE
481 select SYS_SUPPORTS_ZBOOT
482 select SYS_HAS_EARLY_PRINTK
483 select USE_GENERIC_EARLY_PRINTK_8250
486 This enables support for the IMG Pistachio SoC platform.
489 bool "MIPS Malta board"
490 select ARCH_MAY_HAVE_PC_FDC
491 select ARCH_MIGHT_HAVE_PC_PARPORT
492 select ARCH_MIGHT_HAVE_PC_SERIO
498 select CLKSRC_MIPS_GIC
500 select DMA_MAYBE_COHERENT
501 select GENERIC_ISA_DMA
502 select HAVE_PCSPKR_PLATFORM
509 select MIPS_CPU_SCACHE
510 select MIPS_L1_CACHE_SHIFT_6
511 select PCI_GT64XXX_PCI0
515 select SYS_HAS_CPU_MIPS32_R1
516 select SYS_HAS_CPU_MIPS32_R2
517 select SYS_HAS_CPU_MIPS32_R3_5
518 select SYS_HAS_CPU_MIPS32_R5
519 select SYS_HAS_CPU_MIPS32_R6
520 select SYS_HAS_CPU_MIPS64_R1
521 select SYS_HAS_CPU_MIPS64_R2
522 select SYS_HAS_CPU_MIPS64_R6
523 select SYS_HAS_CPU_NEVADA
524 select SYS_HAS_CPU_RM7000
525 select SYS_SUPPORTS_32BIT_KERNEL
526 select SYS_SUPPORTS_64BIT_KERNEL
527 select SYS_SUPPORTS_BIG_ENDIAN
528 select SYS_SUPPORTS_HIGHMEM
529 select SYS_SUPPORTS_LITTLE_ENDIAN
530 select SYS_SUPPORTS_MICROMIPS
531 select SYS_SUPPORTS_MIPS_CMP
532 select SYS_SUPPORTS_MIPS_CPS
533 select SYS_SUPPORTS_MIPS16
534 select SYS_SUPPORTS_MULTITHREADING
535 select SYS_SUPPORTS_SMARTMIPS
536 select SYS_SUPPORTS_VPE_LOADER
537 select SYS_SUPPORTS_ZBOOT
538 select SYS_SUPPORTS_RELOCATABLE
541 select ZONE_DMA32 if 64BIT
545 This enables support for the MIPS Technologies Malta evaluation
549 bool "Microchip PIC32 Family"
551 This enables support for the Microchip PIC32 family of platforms.
553 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
557 bool "NEC EMMA2RH Mark-eins board"
561 This enables support for the NEC Electronics Mark-eins boards.
564 bool "NEC VR4100 series based machines"
567 select SYS_HAS_CPU_VR41XX
568 select SYS_SUPPORTS_MIPS16
572 bool "NXP STB220 board"
575 Support for NXP Semiconductors STB220 Development Board.
582 Support for NXP Semiconductors STB225 Development Board.
585 bool "PMC-Sierra MSP chipsets"
588 select DMA_NONCOHERENT
590 select NO_EXCEPT_FILL
592 select SYS_HAS_CPU_MIPS32_R1
593 select SYS_HAS_CPU_MIPS32_R2
594 select SYS_SUPPORTS_32BIT_KERNEL
595 select SYS_SUPPORTS_BIG_ENDIAN
596 select SYS_SUPPORTS_MIPS16
599 select SERIAL_8250_CONSOLE
600 select USB_EHCI_BIG_ENDIAN_MMIO
601 select USB_EHCI_BIG_ENDIAN_DESC
603 This adds support for the PMC-Sierra family of Multi-Service
604 Processor System-On-A-Chips. These parts include a number
605 of integrated peripherals, interfaces and DSPs in addition to
606 a variety of MIPS cores.
609 bool "Ralink based machines"
613 select DMA_NONCOHERENT
616 select SYS_HAS_CPU_MIPS32_R1
617 select SYS_HAS_CPU_MIPS32_R2
618 select SYS_SUPPORTS_32BIT_KERNEL
619 select SYS_SUPPORTS_LITTLE_ENDIAN
620 select SYS_SUPPORTS_MIPS16
621 select SYS_HAS_EARLY_PRINTK
623 select ARCH_HAS_RESET_CONTROLLER
624 select RESET_CONTROLLER
627 bool "SGI IP22 (Indy/Indigo2)"
630 select ARCH_MIGHT_HAVE_PC_SERIO
634 select DEFAULT_SGI_PARTITION
635 select DMA_NONCOHERENT
639 select IP22_CPU_SCACHE
641 select GENERIC_ISA_DMA_SUPPORT_BROKEN
643 select SGI_HAS_INDYDOG
649 select SYS_HAS_CPU_R4X00
650 select SYS_HAS_CPU_R5000
652 # Disable EARLY_PRINTK for now since it leads to overwritten prom
653 # memory during early boot on some machines.
655 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
656 # for a more details discussion
658 # select SYS_HAS_EARLY_PRINTK
659 select SYS_SUPPORTS_32BIT_KERNEL
660 select SYS_SUPPORTS_64BIT_KERNEL
661 select SYS_SUPPORTS_BIG_ENDIAN
662 select MIPS_L1_CACHE_SHIFT_7
664 This are the SGI Indy, Challenge S and Indigo2, as well as certain
665 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
666 that runs on these, say Y here.
669 bool "SGI IP27 (Origin200/2000)"
670 select ARCH_HAS_PHYS_TO_DMA
674 select DEFAULT_SGI_PARTITION
675 select SYS_HAS_EARLY_PRINTK
677 select NR_CPUS_DEFAULT_64
678 select SYS_HAS_CPU_R10000
679 select SYS_SUPPORTS_64BIT_KERNEL
680 select SYS_SUPPORTS_BIG_ENDIAN
681 select SYS_SUPPORTS_NUMA
682 select SYS_SUPPORTS_SMP
683 select MIPS_L1_CACHE_SHIFT_7
685 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
686 workstations. To compile a Linux kernel that runs on these, say Y
690 bool "SGI IP28 (Indigo2 R10k)"
693 select ARCH_MIGHT_HAVE_PC_SERIO
697 select DEFAULT_SGI_PARTITION
698 select DMA_NONCOHERENT
699 select GENERIC_ISA_DMA_SUPPORT_BROKEN
705 select SGI_HAS_INDYDOG
711 select SYS_HAS_CPU_R10000
713 # Disable EARLY_PRINTK for now since it leads to overwritten prom
714 # memory during early boot on some machines.
716 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
717 # for a more details discussion
719 # select SYS_HAS_EARLY_PRINTK
720 select SYS_SUPPORTS_64BIT_KERNEL
721 select SYS_SUPPORTS_BIG_ENDIAN
722 select MIPS_L1_CACHE_SHIFT_7
724 This is the SGI Indigo2 with R10000 processor. To compile a Linux
725 kernel that runs on these, say Y here.
729 select ARCH_HAS_PHYS_TO_DMA
735 select DMA_NONCOHERENT
738 select R5000_CPU_SCACHE
739 select RM7000_CPU_SCACHE
740 select SYS_HAS_CPU_R5000
741 select SYS_HAS_CPU_R10000 if BROKEN
742 select SYS_HAS_CPU_RM7000
743 select SYS_HAS_CPU_NEVADA
744 select SYS_SUPPORTS_64BIT_KERNEL
745 select SYS_SUPPORTS_BIG_ENDIAN
747 If you want this kernel to run on SGI O2 workstation, say Y here.
750 bool "Sibyte BCM91120C-CRhine"
752 select SIBYTE_BCM1120
754 select SYS_HAS_CPU_SB1
755 select SYS_SUPPORTS_BIG_ENDIAN
756 select SYS_SUPPORTS_LITTLE_ENDIAN
759 bool "Sibyte BCM91120x-Carmel"
761 select SIBYTE_BCM1120
763 select SYS_HAS_CPU_SB1
764 select SYS_SUPPORTS_BIG_ENDIAN
765 select SYS_SUPPORTS_LITTLE_ENDIAN
768 bool "Sibyte BCM91125C-CRhone"
770 select SIBYTE_BCM1125
772 select SYS_HAS_CPU_SB1
773 select SYS_SUPPORTS_BIG_ENDIAN
774 select SYS_SUPPORTS_HIGHMEM
775 select SYS_SUPPORTS_LITTLE_ENDIAN
778 bool "Sibyte BCM91125E-Rhone"
780 select SIBYTE_BCM1125H
782 select SYS_HAS_CPU_SB1
783 select SYS_SUPPORTS_BIG_ENDIAN
784 select SYS_SUPPORTS_LITTLE_ENDIAN
787 bool "Sibyte BCM91250A-SWARM"
789 select HAVE_PATA_PLATFORM
792 select SYS_HAS_CPU_SB1
793 select SYS_SUPPORTS_BIG_ENDIAN
794 select SYS_SUPPORTS_HIGHMEM
795 select SYS_SUPPORTS_LITTLE_ENDIAN
796 select ZONE_DMA32 if 64BIT
797 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
799 config SIBYTE_LITTLESUR
800 bool "Sibyte BCM91250C2-LittleSur"
802 select HAVE_PATA_PLATFORM
805 select SYS_HAS_CPU_SB1
806 select SYS_SUPPORTS_BIG_ENDIAN
807 select SYS_SUPPORTS_HIGHMEM
808 select SYS_SUPPORTS_LITTLE_ENDIAN
809 select ZONE_DMA32 if 64BIT
811 config SIBYTE_SENTOSA
812 bool "Sibyte BCM91250E-Sentosa"
816 select SYS_HAS_CPU_SB1
817 select SYS_SUPPORTS_BIG_ENDIAN
818 select SYS_SUPPORTS_LITTLE_ENDIAN
819 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
822 bool "Sibyte BCM91480B-BigSur"
824 select NR_CPUS_DEFAULT_4
825 select SIBYTE_BCM1x80
827 select SYS_HAS_CPU_SB1
828 select SYS_SUPPORTS_BIG_ENDIAN
829 select SYS_SUPPORTS_HIGHMEM
830 select SYS_SUPPORTS_LITTLE_ENDIAN
831 select ZONE_DMA32 if 64BIT
832 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
835 bool "SNI RM200/300/400"
836 select FW_ARC if CPU_LITTLE_ENDIAN
837 select FW_ARC32 if CPU_LITTLE_ENDIAN
838 select FW_SNIPROM if CPU_BIG_ENDIAN
839 select ARCH_MAY_HAVE_PC_FDC
840 select ARCH_MIGHT_HAVE_PC_PARPORT
841 select ARCH_MIGHT_HAVE_PC_SERIO
845 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
846 select DMA_NONCOHERENT
847 select GENERIC_ISA_DMA
848 select HAVE_PCSPKR_PLATFORM
855 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
856 select SYS_HAS_CPU_R4X00
857 select SYS_HAS_CPU_R5000
858 select SYS_HAS_CPU_R10000
859 select R5000_CPU_SCACHE
860 select SYS_HAS_EARLY_PRINTK
861 select SYS_SUPPORTS_32BIT_KERNEL
862 select SYS_SUPPORTS_64BIT_KERNEL
863 select SYS_SUPPORTS_BIG_ENDIAN
864 select SYS_SUPPORTS_HIGHMEM
865 select SYS_SUPPORTS_LITTLE_ENDIAN
867 The SNI RM200/300/400 are MIPS-based machines manufactured by
868 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
869 Technology and now in turn merged with Fujitsu. Say Y here to
870 support this machine type.
873 bool "Toshiba TX39 series based machines"
876 bool "Toshiba TX49 series based machines"
878 config MIKROTIK_RB532
879 bool "Mikrotik RB532 boards"
882 select DMA_NONCOHERENT
885 select SYS_HAS_CPU_MIPS32_R1
886 select SYS_SUPPORTS_32BIT_KERNEL
887 select SYS_SUPPORTS_LITTLE_ENDIAN
891 select MIPS_L1_CACHE_SHIFT_4
893 Support the Mikrotik(tm) RouterBoard 532 series,
894 based on the IDT RC32434 SoC.
896 config CAVIUM_OCTEON_SOC
897 bool "Cavium Networks Octeon SoC based boards"
899 select ARCH_HAS_PHYS_TO_DMA
901 select PHYS_ADDR_T_64BIT
902 select SYS_SUPPORTS_64BIT_KERNEL
903 select SYS_SUPPORTS_BIG_ENDIAN
905 select EDAC_ATOMIC_SCRUB
906 select SYS_SUPPORTS_LITTLE_ENDIAN
907 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
908 select SYS_HAS_EARLY_PRINTK
909 select SYS_HAS_CPU_CAVIUM_OCTEON
916 select ARCH_SPARSEMEM_ENABLE
917 select SYS_SUPPORTS_SMP
918 select NR_CPUS_DEFAULT_64
919 select MIPS_NR_CPU_NR_MAP_1024
921 select MTD_COMPLEX_MAPPINGS
923 select SYS_SUPPORTS_RELOCATABLE
925 This option supports all of the Octeon reference boards from Cavium
926 Networks. It builds a kernel that dynamically determines the Octeon
927 CPU type and supports all known board reference implementations.
928 Some of the supported boards are:
935 Say Y here for most Octeon reference boards.
938 bool "Netlogic XLR/XLS based systems"
941 select SYS_HAS_CPU_XLR
942 select SYS_SUPPORTS_SMP
945 select SYS_SUPPORTS_32BIT_KERNEL
946 select SYS_SUPPORTS_64BIT_KERNEL
947 select PHYS_ADDR_T_64BIT
948 select SYS_SUPPORTS_BIG_ENDIAN
949 select SYS_SUPPORTS_HIGHMEM
950 select NR_CPUS_DEFAULT_32
954 select ZONE_DMA32 if 64BIT
956 select SYS_HAS_EARLY_PRINTK
957 select SYS_SUPPORTS_ZBOOT
958 select SYS_SUPPORTS_ZBOOT_UART16550
960 Support for systems based on Netlogic XLR and XLS processors.
961 Say Y here if you have a XLR or XLS based board.
964 bool "Netlogic XLP based systems"
967 select SYS_HAS_CPU_XLP
968 select SYS_SUPPORTS_SMP
970 select SYS_SUPPORTS_32BIT_KERNEL
971 select SYS_SUPPORTS_64BIT_KERNEL
972 select PHYS_ADDR_T_64BIT
974 select SYS_SUPPORTS_BIG_ENDIAN
975 select SYS_SUPPORTS_LITTLE_ENDIAN
976 select SYS_SUPPORTS_HIGHMEM
977 select NR_CPUS_DEFAULT_32
981 select ZONE_DMA32 if 64BIT
983 select SYS_HAS_EARLY_PRINTK
985 select SYS_SUPPORTS_ZBOOT
986 select SYS_SUPPORTS_ZBOOT_UART16550
988 This board is based on Netlogic XLP Processor.
989 Say Y here if you have a XLP based board.
992 bool "Para-Virtualized guest system"
995 select SYS_SUPPORTS_64BIT_KERNEL
996 select SYS_SUPPORTS_32BIT_KERNEL
997 select SYS_SUPPORTS_BIG_ENDIAN
998 select SYS_SUPPORTS_SMP
999 select NR_CPUS_DEFAULT_4
1000 select SYS_HAS_EARLY_PRINTK
1001 select SYS_HAS_CPU_MIPS32_R2
1002 select SYS_HAS_CPU_MIPS64_R2
1003 select SYS_HAS_CPU_CAVIUM_OCTEON
1005 select SWAP_IO_SPACE
1007 This option supports guest running under ????
1011 source "arch/mips/alchemy/Kconfig"
1012 source "arch/mips/ath25/Kconfig"
1013 source "arch/mips/ath79/Kconfig"
1014 source "arch/mips/bcm47xx/Kconfig"
1015 source "arch/mips/bcm63xx/Kconfig"
1016 source "arch/mips/bmips/Kconfig"
1017 source "arch/mips/generic/Kconfig"
1018 source "arch/mips/jazz/Kconfig"
1019 source "arch/mips/jz4740/Kconfig"
1020 source "arch/mips/lantiq/Kconfig"
1021 source "arch/mips/lasat/Kconfig"
1022 source "arch/mips/pic32/Kconfig"
1023 source "arch/mips/pistachio/Kconfig"
1024 source "arch/mips/pmcs-msp71xx/Kconfig"
1025 source "arch/mips/ralink/Kconfig"
1026 source "arch/mips/sgi-ip27/Kconfig"
1027 source "arch/mips/sibyte/Kconfig"
1028 source "arch/mips/txx9/Kconfig"
1029 source "arch/mips/vr41xx/Kconfig"
1030 source "arch/mips/cavium-octeon/Kconfig"
1031 source "arch/mips/loongson32/Kconfig"
1032 source "arch/mips/loongson64/Kconfig"
1033 source "arch/mips/netlogic/Kconfig"
1034 source "arch/mips/paravirt/Kconfig"
1038 config RWSEM_GENERIC_SPINLOCK
1042 config RWSEM_XCHGADD_ALGORITHM
1045 config GENERIC_HWEIGHT
1049 config GENERIC_CALIBRATE_DELAY
1053 config SCHED_OMIT_FRAME_POINTER
1058 # Select some configuration options automatically based on user selections.
1063 config ARCH_MAY_HAVE_PC_FDC
1099 config MIPS_CLOCK_VSYSCALL
1100 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1109 config ARCH_SUPPORTS_UPROBES
1112 config DMA_MAYBE_COHERENT
1113 select DMA_NONCOHERENT
1116 config DMA_PERDEV_COHERENT
1118 select DMA_MAYBE_COHERENT
1120 config DMA_NONCOHERENT
1122 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1123 select ARCH_HAS_SYNC_DMA_FOR_CPU
1124 select NEED_DMA_MAP_STATE
1125 select DMA_NONCOHERENT_MMAP
1126 select DMA_NONCOHERENT_CACHE_SYNC
1127 select DMA_NONCOHERENT_OPS
1129 config SYS_HAS_EARLY_PRINTK
1132 config SYS_SUPPORTS_HOTPLUG_CPU
1135 config MIPS_BONITO64
1150 config NO_IOPORT_MAP
1156 config GENERIC_ISA_DMA
1158 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1161 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1163 select GENERIC_ISA_DMA
1168 config HOLES_IN_ZONE
1171 config SYS_SUPPORTS_RELOCATABLE
1174 Selected if the platform supports relocating the kernel.
1175 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1176 to allow access to command line and entropy sources.
1178 config MIPS_CBPF_JIT
1180 depends on BPF_JIT && HAVE_CBPF_JIT
1182 config MIPS_EBPF_JIT
1184 depends on BPF_JIT && HAVE_EBPF_JIT
1188 # Endianness selection. Sufficiently obscure so many users don't know what to
1189 # answer,so we try hard to limit the available choices. Also the use of a
1190 # choice statement should be more obvious to the user.
1193 prompt "Endianness selection"
1195 Some MIPS machines can be configured for either little or big endian
1196 byte order. These modes require different kernels and a different
1197 Linux distribution. In general there is one preferred byteorder for a
1198 particular system but some systems are just as commonly used in the
1199 one or the other endianness.
1201 config CPU_BIG_ENDIAN
1203 depends on SYS_SUPPORTS_BIG_ENDIAN
1205 config CPU_LITTLE_ENDIAN
1206 bool "Little endian"
1207 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1214 config SYS_SUPPORTS_APM_EMULATION
1217 config SYS_SUPPORTS_BIG_ENDIAN
1220 config SYS_SUPPORTS_LITTLE_ENDIAN
1223 config SYS_SUPPORTS_HUGETLBFS
1225 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1228 config MIPS_HUGE_TLB_SUPPORT
1229 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1246 config PCI_GT64XXX_PCI0
1249 config NO_EXCEPT_FILL
1256 select DMA_NONCOHERENT
1258 select SWAP_IO_SPACE
1259 select SYS_HAS_CPU_R5500
1260 select SYS_SUPPORTS_32BIT_KERNEL
1261 select SYS_SUPPORTS_64BIT_KERNEL
1262 select SYS_SUPPORTS_BIG_ENDIAN
1269 select DMA_NONCOHERENT
1270 select SYS_HAS_CPU_MIPS32_R2
1271 select SYS_SUPPORTS_32BIT_KERNEL
1272 select SYS_SUPPORTS_LITTLE_ENDIAN
1273 select SYS_SUPPORTS_BIG_ENDIAN
1274 select SYS_SUPPORTS_MIPS16
1275 select CPU_MIPSR2_IRQ_VI
1284 config SWAP_IO_SPACE
1287 config SGI_HAS_INDYDOG
1299 config SGI_HAS_ZILOG
1302 config SGI_HAS_I8042
1305 config DEFAULT_SGI_PARTITION
1317 config MIPS_L1_CACHE_SHIFT_4
1320 config MIPS_L1_CACHE_SHIFT_5
1323 config MIPS_L1_CACHE_SHIFT_6
1326 config MIPS_L1_CACHE_SHIFT_7
1329 config MIPS_L1_CACHE_SHIFT
1331 default "7" if MIPS_L1_CACHE_SHIFT_7
1332 default "6" if MIPS_L1_CACHE_SHIFT_6
1333 default "5" if MIPS_L1_CACHE_SHIFT_5
1334 default "4" if MIPS_L1_CACHE_SHIFT_4
1337 config HAVE_STD_PC_SERIAL_PORT
1341 bool "ARC console support"
1342 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1346 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1351 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1360 menu "CPU selection"
1366 config CPU_LOONGSON3
1367 bool "Loongson 3 CPU"
1368 depends on SYS_HAS_CPU_LOONGSON3
1369 select ARCH_HAS_PHYS_TO_DMA
1370 select CPU_SUPPORTS_64BIT_KERNEL
1371 select CPU_SUPPORTS_HIGHMEM
1372 select CPU_SUPPORTS_HUGEPAGES
1373 select WEAK_ORDERING
1374 select WEAK_REORDERING_BEYOND_LLSC
1375 select MIPS_PGD_C0_CONTEXT
1376 select MIPS_L1_CACHE_SHIFT_6
1380 The Loongson 3 processor implements the MIPS64R2 instruction
1381 set with many extensions.
1383 config LOONGSON3_ENHANCEMENT
1384 bool "New Loongson 3 CPU Enhancements"
1387 select CPU_HAS_PREFETCH
1388 depends on CPU_LOONGSON3
1390 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1391 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1392 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1393 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1394 Fast TLB refill support, etc.
1396 This option enable those enhancements which are not probed at run
1397 time. If you want a generic kernel to run on all Loongson 3 machines,
1398 please say 'N' here. If you want a high-performance kernel to run on
1399 new Loongson 3 machines only, please say 'Y' here.
1401 config CPU_LOONGSON2E
1403 depends on SYS_HAS_CPU_LOONGSON2E
1404 select CPU_LOONGSON2
1406 The Loongson 2E processor implements the MIPS III instruction set
1407 with many extensions.
1409 It has an internal FPGA northbridge, which is compatible to
1412 config CPU_LOONGSON2F
1414 depends on SYS_HAS_CPU_LOONGSON2F
1415 select CPU_LOONGSON2
1418 The Loongson 2F processor implements the MIPS III instruction set
1419 with many extensions.
1421 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1422 have a similar programming interface with FPGA northbridge used in
1425 config CPU_LOONGSON1B
1427 depends on SYS_HAS_CPU_LOONGSON1B
1428 select CPU_LOONGSON1
1429 select LEDS_GPIO_REGISTER
1431 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1432 Release 1 instruction set and part of the MIPS32 Release 2
1435 config CPU_LOONGSON1C
1437 depends on SYS_HAS_CPU_LOONGSON1C
1438 select CPU_LOONGSON1
1439 select LEDS_GPIO_REGISTER
1441 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1442 Release 1 instruction set and part of the MIPS32 Release 2
1445 config CPU_MIPS32_R1
1446 bool "MIPS32 Release 1"
1447 depends on SYS_HAS_CPU_MIPS32_R1
1448 select CPU_HAS_PREFETCH
1449 select CPU_SUPPORTS_32BIT_KERNEL
1450 select CPU_SUPPORTS_HIGHMEM
1452 Choose this option to build a kernel for release 1 or later of the
1453 MIPS32 architecture. Most modern embedded systems with a 32-bit
1454 MIPS processor are based on a MIPS32 processor. If you know the
1455 specific type of processor in your system, choose those that one
1456 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1457 Release 2 of the MIPS32 architecture is available since several
1458 years so chances are you even have a MIPS32 Release 2 processor
1459 in which case you should choose CPU_MIPS32_R2 instead for better
1462 config CPU_MIPS32_R2
1463 bool "MIPS32 Release 2"
1464 depends on SYS_HAS_CPU_MIPS32_R2
1465 select CPU_HAS_PREFETCH
1466 select CPU_SUPPORTS_32BIT_KERNEL
1467 select CPU_SUPPORTS_HIGHMEM
1468 select CPU_SUPPORTS_MSA
1471 Choose this option to build a kernel for release 2 or later of the
1472 MIPS32 architecture. Most modern embedded systems with a 32-bit
1473 MIPS processor are based on a MIPS32 processor. If you know the
1474 specific type of processor in your system, choose those that one
1475 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1477 config CPU_MIPS32_R6
1478 bool "MIPS32 Release 6"
1479 depends on SYS_HAS_CPU_MIPS32_R6
1480 select CPU_HAS_PREFETCH
1481 select CPU_SUPPORTS_32BIT_KERNEL
1482 select CPU_SUPPORTS_HIGHMEM
1483 select CPU_SUPPORTS_MSA
1486 select MIPS_O32_FP64_SUPPORT
1488 Choose this option to build a kernel for release 6 or later of the
1489 MIPS32 architecture. New MIPS processors, starting with the Warrior
1490 family, are based on a MIPS32r6 processor. If you own an older
1491 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1493 config CPU_MIPS64_R1
1494 bool "MIPS64 Release 1"
1495 depends on SYS_HAS_CPU_MIPS64_R1
1496 select CPU_HAS_PREFETCH
1497 select CPU_SUPPORTS_32BIT_KERNEL
1498 select CPU_SUPPORTS_64BIT_KERNEL
1499 select CPU_SUPPORTS_HIGHMEM
1500 select CPU_SUPPORTS_HUGEPAGES
1502 Choose this option to build a kernel for release 1 or later of the
1503 MIPS64 architecture. Many modern embedded systems with a 64-bit
1504 MIPS processor are based on a MIPS64 processor. If you know the
1505 specific type of processor in your system, choose those that one
1506 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1507 Release 2 of the MIPS64 architecture is available since several
1508 years so chances are you even have a MIPS64 Release 2 processor
1509 in which case you should choose CPU_MIPS64_R2 instead for better
1512 config CPU_MIPS64_R2
1513 bool "MIPS64 Release 2"
1514 depends on SYS_HAS_CPU_MIPS64_R2
1515 select CPU_HAS_PREFETCH
1516 select CPU_SUPPORTS_32BIT_KERNEL
1517 select CPU_SUPPORTS_64BIT_KERNEL
1518 select CPU_SUPPORTS_HIGHMEM
1519 select CPU_SUPPORTS_HUGEPAGES
1520 select CPU_SUPPORTS_MSA
1523 Choose this option to build a kernel for release 2 or later of the
1524 MIPS64 architecture. Many modern embedded systems with a 64-bit
1525 MIPS processor are based on a MIPS64 processor. If you know the
1526 specific type of processor in your system, choose those that one
1527 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1529 config CPU_MIPS64_R6
1530 bool "MIPS64 Release 6"
1531 depends on SYS_HAS_CPU_MIPS64_R6
1532 select CPU_HAS_PREFETCH
1533 select CPU_SUPPORTS_32BIT_KERNEL
1534 select CPU_SUPPORTS_64BIT_KERNEL
1535 select CPU_SUPPORTS_HIGHMEM
1536 select CPU_SUPPORTS_MSA
1538 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1541 Choose this option to build a kernel for release 6 or later of the
1542 MIPS64 architecture. New MIPS processors, starting with the Warrior
1543 family, are based on a MIPS64r6 processor. If you own an older
1544 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1548 depends on SYS_HAS_CPU_R3000
1550 select CPU_SUPPORTS_32BIT_KERNEL
1551 select CPU_SUPPORTS_HIGHMEM
1553 Please make sure to pick the right CPU type. Linux/MIPS is not
1554 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1555 *not* work on R4000 machines and vice versa. However, since most
1556 of the supported machines have an R4000 (or similar) CPU, R4x00
1557 might be a safe bet. If the resulting kernel does not work,
1558 try to recompile with R3000.
1562 depends on SYS_HAS_CPU_TX39XX
1563 select CPU_SUPPORTS_32BIT_KERNEL
1567 depends on SYS_HAS_CPU_VR41XX
1568 select CPU_SUPPORTS_32BIT_KERNEL
1569 select CPU_SUPPORTS_64BIT_KERNEL
1571 The options selects support for the NEC VR4100 series of processors.
1572 Only choose this option if you have one of these processors as a
1573 kernel built with this option will not run on any other type of
1574 processor or vice versa.
1578 depends on SYS_HAS_CPU_R4300
1579 select CPU_SUPPORTS_32BIT_KERNEL
1580 select CPU_SUPPORTS_64BIT_KERNEL
1582 MIPS Technologies R4300-series processors.
1586 depends on SYS_HAS_CPU_R4X00
1587 select CPU_SUPPORTS_32BIT_KERNEL
1588 select CPU_SUPPORTS_64BIT_KERNEL
1589 select CPU_SUPPORTS_HUGEPAGES
1591 MIPS Technologies R4000-series processors other than 4300, including
1592 the R4000, R4400, R4600, and 4700.
1596 depends on SYS_HAS_CPU_TX49XX
1597 select CPU_HAS_PREFETCH
1598 select CPU_SUPPORTS_32BIT_KERNEL
1599 select CPU_SUPPORTS_64BIT_KERNEL
1600 select CPU_SUPPORTS_HUGEPAGES
1604 depends on SYS_HAS_CPU_R5000
1605 select CPU_SUPPORTS_32BIT_KERNEL
1606 select CPU_SUPPORTS_64BIT_KERNEL
1607 select CPU_SUPPORTS_HUGEPAGES
1609 MIPS Technologies R5000-series processors other than the Nevada.
1613 depends on SYS_HAS_CPU_R5432
1614 select CPU_SUPPORTS_32BIT_KERNEL
1615 select CPU_SUPPORTS_64BIT_KERNEL
1616 select CPU_SUPPORTS_HUGEPAGES
1620 depends on SYS_HAS_CPU_R5500
1621 select CPU_SUPPORTS_32BIT_KERNEL
1622 select CPU_SUPPORTS_64BIT_KERNEL
1623 select CPU_SUPPORTS_HUGEPAGES
1625 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1630 depends on SYS_HAS_CPU_NEVADA
1631 select CPU_SUPPORTS_32BIT_KERNEL
1632 select CPU_SUPPORTS_64BIT_KERNEL
1633 select CPU_SUPPORTS_HUGEPAGES
1635 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1639 depends on SYS_HAS_CPU_R8000
1640 select CPU_HAS_PREFETCH
1641 select CPU_SUPPORTS_64BIT_KERNEL
1643 MIPS Technologies R8000 processors. Note these processors are
1644 uncommon and the support for them is incomplete.
1648 depends on SYS_HAS_CPU_R10000
1649 select CPU_HAS_PREFETCH
1650 select CPU_SUPPORTS_32BIT_KERNEL
1651 select CPU_SUPPORTS_64BIT_KERNEL
1652 select CPU_SUPPORTS_HIGHMEM
1653 select CPU_SUPPORTS_HUGEPAGES
1655 MIPS Technologies R10000-series processors.
1659 depends on SYS_HAS_CPU_RM7000
1660 select CPU_HAS_PREFETCH
1661 select CPU_SUPPORTS_32BIT_KERNEL
1662 select CPU_SUPPORTS_64BIT_KERNEL
1663 select CPU_SUPPORTS_HIGHMEM
1664 select CPU_SUPPORTS_HUGEPAGES
1668 depends on SYS_HAS_CPU_SB1
1669 select CPU_SUPPORTS_32BIT_KERNEL
1670 select CPU_SUPPORTS_64BIT_KERNEL
1671 select CPU_SUPPORTS_HIGHMEM
1672 select CPU_SUPPORTS_HUGEPAGES
1673 select WEAK_ORDERING
1675 config CPU_CAVIUM_OCTEON
1676 bool "Cavium Octeon processor"
1677 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1678 select CPU_HAS_PREFETCH
1679 select CPU_SUPPORTS_64BIT_KERNEL
1680 select WEAK_ORDERING
1681 select CPU_SUPPORTS_HIGHMEM
1682 select CPU_SUPPORTS_HUGEPAGES
1683 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1684 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1685 select MIPS_L1_CACHE_SHIFT_7
1688 The Cavium Octeon processor is a highly integrated chip containing
1689 many ethernet hardware widgets for networking tasks. The processor
1690 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1691 Full details can be found at http://www.caviumnetworks.com.
1694 bool "Broadcom BMIPS"
1695 depends on SYS_HAS_CPU_BMIPS
1697 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1698 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1699 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1700 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1701 select CPU_SUPPORTS_32BIT_KERNEL
1702 select DMA_NONCOHERENT
1704 select SWAP_IO_SPACE
1705 select WEAK_ORDERING
1706 select CPU_SUPPORTS_HIGHMEM
1707 select CPU_HAS_PREFETCH
1708 select CPU_SUPPORTS_CPUFREQ
1709 select MIPS_EXTERNAL_TIMER
1711 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1714 bool "Netlogic XLR SoC"
1715 depends on SYS_HAS_CPU_XLR
1716 select CPU_SUPPORTS_32BIT_KERNEL
1717 select CPU_SUPPORTS_64BIT_KERNEL
1718 select CPU_SUPPORTS_HIGHMEM
1719 select CPU_SUPPORTS_HUGEPAGES
1720 select WEAK_ORDERING
1721 select WEAK_REORDERING_BEYOND_LLSC
1723 Netlogic Microsystems XLR/XLS processors.
1726 bool "Netlogic XLP SoC"
1727 depends on SYS_HAS_CPU_XLP
1728 select CPU_SUPPORTS_32BIT_KERNEL
1729 select CPU_SUPPORTS_64BIT_KERNEL
1730 select CPU_SUPPORTS_HIGHMEM
1731 select WEAK_ORDERING
1732 select WEAK_REORDERING_BEYOND_LLSC
1733 select CPU_HAS_PREFETCH
1735 select CPU_SUPPORTS_HUGEPAGES
1736 select MIPS_ASID_BITS_VARIABLE
1738 Netlogic Microsystems XLP processors.
1741 config CPU_MIPS32_3_5_FEATURES
1742 bool "MIPS32 Release 3.5 Features"
1743 depends on SYS_HAS_CPU_MIPS32_R3_5
1744 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1746 Choose this option to build a kernel for release 2 or later of the
1747 MIPS32 architecture including features from the 3.5 release such as
1748 support for Enhanced Virtual Addressing (EVA).
1750 config CPU_MIPS32_3_5_EVA
1751 bool "Enhanced Virtual Addressing (EVA)"
1752 depends on CPU_MIPS32_3_5_FEATURES
1756 Choose this option if you want to enable the Enhanced Virtual
1757 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1758 One of its primary benefits is an increase in the maximum size
1759 of lowmem (up to 3GB). If unsure, say 'N' here.
1761 config CPU_MIPS32_R5_FEATURES
1762 bool "MIPS32 Release 5 Features"
1763 depends on SYS_HAS_CPU_MIPS32_R5
1764 depends on CPU_MIPS32_R2
1766 Choose this option to build a kernel for release 2 or later of the
1767 MIPS32 architecture including features from release 5 such as
1768 support for Extended Physical Addressing (XPA).
1770 config CPU_MIPS32_R5_XPA
1771 bool "Extended Physical Addressing (XPA)"
1772 depends on CPU_MIPS32_R5_FEATURES
1774 depends on !PAGE_SIZE_4KB
1775 depends on SYS_SUPPORTS_HIGHMEM
1778 select PHYS_ADDR_T_64BIT
1781 Choose this option if you want to enable the Extended Physical
1782 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1783 benefit is to increase physical addressing equal to or greater
1784 than 40 bits. Note that this has the side effect of turning on
1785 64-bit addressing which in turn makes the PTEs 64-bit in size.
1786 If unsure, say 'N' here.
1789 config CPU_NOP_WORKAROUNDS
1792 config CPU_JUMP_WORKAROUNDS
1795 config CPU_LOONGSON2F_WORKAROUNDS
1796 bool "Loongson 2F Workarounds"
1798 select CPU_NOP_WORKAROUNDS
1799 select CPU_JUMP_WORKAROUNDS
1801 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1802 require workarounds. Without workarounds the system may hang
1803 unexpectedly. For more information please refer to the gas
1804 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1806 Loongson 2F03 and later have fixed these issues and no workarounds
1807 are needed. The workarounds have no significant side effect on them
1808 but may decrease the performance of the system so this option should
1809 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1812 If unsure, please say Y.
1813 endif # CPU_LOONGSON2F
1815 config SYS_SUPPORTS_ZBOOT
1817 select HAVE_KERNEL_GZIP
1818 select HAVE_KERNEL_BZIP2
1819 select HAVE_KERNEL_LZ4
1820 select HAVE_KERNEL_LZMA
1821 select HAVE_KERNEL_LZO
1822 select HAVE_KERNEL_XZ
1824 config SYS_SUPPORTS_ZBOOT_UART16550
1826 select SYS_SUPPORTS_ZBOOT
1828 config SYS_SUPPORTS_ZBOOT_UART_PROM
1830 select SYS_SUPPORTS_ZBOOT
1832 config CPU_LOONGSON2
1834 select CPU_SUPPORTS_32BIT_KERNEL
1835 select CPU_SUPPORTS_64BIT_KERNEL
1836 select CPU_SUPPORTS_HIGHMEM
1837 select CPU_SUPPORTS_HUGEPAGES
1838 select ARCH_HAS_PHYS_TO_DMA
1840 config CPU_LOONGSON1
1844 select CPU_HAS_PREFETCH
1845 select CPU_SUPPORTS_32BIT_KERNEL
1846 select CPU_SUPPORTS_HIGHMEM
1847 select CPU_SUPPORTS_CPUFREQ
1849 config CPU_BMIPS32_3300
1850 select SMP_UP if SMP
1853 config CPU_BMIPS4350
1855 select SYS_SUPPORTS_SMP
1856 select SYS_SUPPORTS_HOTPLUG_CPU
1858 config CPU_BMIPS4380
1860 select MIPS_L1_CACHE_SHIFT_6
1861 select SYS_SUPPORTS_SMP
1862 select SYS_SUPPORTS_HOTPLUG_CPU
1865 config CPU_BMIPS5000
1867 select MIPS_CPU_SCACHE
1868 select MIPS_L1_CACHE_SHIFT_7
1869 select SYS_SUPPORTS_SMP
1870 select SYS_SUPPORTS_HOTPLUG_CPU
1873 config SYS_HAS_CPU_LOONGSON3
1875 select CPU_SUPPORTS_CPUFREQ
1878 config SYS_HAS_CPU_LOONGSON2E
1881 config SYS_HAS_CPU_LOONGSON2F
1883 select CPU_SUPPORTS_CPUFREQ
1884 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1885 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1887 config SYS_HAS_CPU_LOONGSON1B
1890 config SYS_HAS_CPU_LOONGSON1C
1893 config SYS_HAS_CPU_MIPS32_R1
1896 config SYS_HAS_CPU_MIPS32_R2
1899 config SYS_HAS_CPU_MIPS32_R3_5
1902 config SYS_HAS_CPU_MIPS32_R5
1905 config SYS_HAS_CPU_MIPS32_R6
1908 config SYS_HAS_CPU_MIPS64_R1
1911 config SYS_HAS_CPU_MIPS64_R2
1914 config SYS_HAS_CPU_MIPS64_R6
1917 config SYS_HAS_CPU_R3000
1920 config SYS_HAS_CPU_TX39XX
1923 config SYS_HAS_CPU_VR41XX
1926 config SYS_HAS_CPU_R4300
1929 config SYS_HAS_CPU_R4X00
1932 config SYS_HAS_CPU_TX49XX
1935 config SYS_HAS_CPU_R5000
1938 config SYS_HAS_CPU_R5432
1941 config SYS_HAS_CPU_R5500
1944 config SYS_HAS_CPU_NEVADA
1947 config SYS_HAS_CPU_R8000
1950 config SYS_HAS_CPU_R10000
1953 config SYS_HAS_CPU_RM7000
1956 config SYS_HAS_CPU_SB1
1959 config SYS_HAS_CPU_CAVIUM_OCTEON
1962 config SYS_HAS_CPU_BMIPS
1965 config SYS_HAS_CPU_BMIPS32_3300
1967 select SYS_HAS_CPU_BMIPS
1969 config SYS_HAS_CPU_BMIPS4350
1971 select SYS_HAS_CPU_BMIPS
1973 config SYS_HAS_CPU_BMIPS4380
1975 select SYS_HAS_CPU_BMIPS
1977 config SYS_HAS_CPU_BMIPS5000
1979 select SYS_HAS_CPU_BMIPS
1981 config SYS_HAS_CPU_XLR
1984 config SYS_HAS_CPU_XLP
1988 # CPU may reorder R->R, R->W, W->R, W->W
1989 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1991 config WEAK_ORDERING
1995 # CPU may reorder reads and writes beyond LL/SC
1996 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1998 config WEAK_REORDERING_BEYOND_LLSC
2003 # These two indicate any level of the MIPS32 and MIPS64 architecture
2007 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2011 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2014 # These two indicate the revision of the architecture, either Release 1 or Release 2
2018 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2022 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2028 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2030 select HAVE_ARCH_BITREVERSE
2031 select MIPS_ASID_BITS_VARIABLE
2032 select MIPS_CRC_SUPPORT
2041 config SYS_SUPPORTS_32BIT_KERNEL
2043 config SYS_SUPPORTS_64BIT_KERNEL
2045 config CPU_SUPPORTS_32BIT_KERNEL
2047 config CPU_SUPPORTS_64BIT_KERNEL
2049 config CPU_SUPPORTS_CPUFREQ
2051 config CPU_SUPPORTS_ADDRWINCFG
2053 config CPU_SUPPORTS_HUGEPAGES
2055 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2057 config MIPS_PGD_C0_CONTEXT
2059 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2062 # Set to y for ptrace access to watch registers.
2064 config HARDWARE_WATCHPOINTS
2066 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2071 prompt "Kernel code model"
2073 You should only select this option if you have a workload that
2074 actually benefits from 64-bit processing or if your machine has
2075 large memory. You will only be presented a single option in this
2076 menu if your system does not support both 32-bit and 64-bit kernels.
2079 bool "32-bit kernel"
2080 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2083 Select this option if you want to build a 32-bit kernel.
2086 bool "64-bit kernel"
2087 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2089 Select this option if you want to build a 64-bit kernel.
2094 bool "KVM Guest Kernel"
2095 depends on BROKEN_ON_SMP
2097 Select this option if building a guest kernel for KVM (Trap & Emulate)
2100 config KVM_GUEST_TIMER_FREQ
2101 int "Count/Compare Timer Frequency (MHz)"
2102 depends on KVM_GUEST
2105 Set this to non-zero if building a guest kernel for KVM to skip RTC
2106 emulation when determining guest CPU Frequency. Instead, the guest's
2107 timer frequency is specified directly.
2109 config MIPS_VA_BITS_48
2110 bool "48 bits virtual memory"
2113 Support a maximum at least 48 bits of application virtual
2114 memory. Default is 40 bits or less, depending on the CPU.
2115 For page sizes 16k and above, this option results in a small
2116 memory overhead for page tables. For 4k page size, a fourth
2117 level of page tables is added which imposes both a memory
2118 overhead as well as slower TLB fault handling.
2123 prompt "Kernel page size"
2124 default PAGE_SIZE_4KB
2126 config PAGE_SIZE_4KB
2128 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2130 This option select the standard 4kB Linux page size. On some
2131 R3000-family processors this is the only available page size. Using
2132 4kB page size will minimize memory consumption and is therefore
2133 recommended for low memory systems.
2135 config PAGE_SIZE_8KB
2137 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2138 depends on !MIPS_VA_BITS_48
2140 Using 8kB page size will result in higher performance kernel at
2141 the price of higher memory consumption. This option is available
2142 only on R8000 and cnMIPS processors. Note that you will need a
2143 suitable Linux distribution to support this.
2145 config PAGE_SIZE_16KB
2147 depends on !CPU_R3000 && !CPU_TX39XX
2149 Using 16kB page size will result in higher performance kernel at
2150 the price of higher memory consumption. This option is available on
2151 all non-R3000 family processors. Note that you will need a suitable
2152 Linux distribution to support this.
2154 config PAGE_SIZE_32KB
2156 depends on CPU_CAVIUM_OCTEON
2157 depends on !MIPS_VA_BITS_48
2159 Using 32kB page size will result in higher performance kernel at
2160 the price of higher memory consumption. This option is available
2161 only on cnMIPS cores. Note that you will need a suitable Linux
2162 distribution to support this.
2164 config PAGE_SIZE_64KB
2166 depends on !CPU_R3000 && !CPU_TX39XX
2168 Using 64kB page size will result in higher performance kernel at
2169 the price of higher memory consumption. This option is available on
2170 all non-R3000 family processor. Not that at the time of this
2171 writing this option is still high experimental.
2175 config FORCE_MAX_ZONEORDER
2176 int "Maximum zone order"
2177 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2178 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2179 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2180 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2181 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2182 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2186 The kernel memory allocator divides physically contiguous memory
2187 blocks into "zones", where each zone is a power of two number of
2188 pages. This option selects the largest power of two that the kernel
2189 keeps in the memory allocator. If you need to allocate very large
2190 blocks of physically contiguous memory, then you may need to
2191 increase this value.
2193 This config option is actually maximum order plus one. For example,
2194 a value of 11 means that the largest free memory block is 2^10 pages.
2196 The page size is not necessarily 4KB. Keep this in mind
2197 when choosing a value for this option.
2202 config IP22_CPU_SCACHE
2207 # Support for a MIPS32 / MIPS64 style S-caches
2209 config MIPS_CPU_SCACHE
2213 config R5000_CPU_SCACHE
2217 config RM7000_CPU_SCACHE
2221 config SIBYTE_DMA_PAGEOPS
2222 bool "Use DMA to clear/copy pages"
2225 Instead of using the CPU to zero and copy pages, use a Data Mover
2226 channel. These DMA channels are otherwise unused by the standard
2227 SiByte Linux port. Seems to give a small performance benefit.
2229 config CPU_HAS_PREFETCH
2232 config CPU_GENERIC_DUMP_TLB
2234 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
2238 default y if !(CPU_R3000 || CPU_TX39XX)
2240 config CPU_R4K_CACHE_TLB
2242 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2245 bool "MIPS MT SMP support (1 TC on each available VPE)"
2247 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2248 select CPU_MIPSR2_IRQ_VI
2249 select CPU_MIPSR2_IRQ_EI
2254 select SYS_SUPPORTS_SMP
2255 select SYS_SUPPORTS_SCHED_SMT
2256 select MIPS_PERF_SHARED_TC_COUNTERS
2258 This is a kernel model which is known as SMVP. This is supported
2259 on cores with the MT ASE and uses the available VPEs to implement
2260 virtual processors which supports SMP. This is equivalent to the
2261 Intel Hyperthreading feature. For further information go to
2262 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2268 bool "SMT (multithreading) scheduler support"
2269 depends on SYS_SUPPORTS_SCHED_SMT
2272 SMT scheduler support improves the CPU scheduler's decision making
2273 when dealing with MIPS MT enabled cores at a cost of slightly
2274 increased overhead in some places. If unsure say N here.
2276 config SYS_SUPPORTS_SCHED_SMT
2279 config SYS_SUPPORTS_MULTITHREADING
2282 config MIPS_MT_FPAFF
2283 bool "Dynamic FPU affinity for FP-intensive threads"
2285 depends on MIPS_MT_SMP
2287 config MIPSR2_TO_R6_EMULATOR
2288 bool "MIPS R2-to-R6 emulator"
2289 depends on CPU_MIPSR6
2292 Choose this option if you want to run non-R6 MIPS userland code.
2293 Even if you say 'Y' here, the emulator will still be disabled by
2294 default. You can enable it using the 'mipsr2emu' kernel option.
2295 The only reason this is a build-time option is to save ~14K from the
2298 config SYS_SUPPORTS_VPE_LOADER
2300 depends on SYS_SUPPORTS_MULTITHREADING
2302 Indicates that the platform supports the VPE loader, and provides
2305 config MIPS_VPE_LOADER
2306 bool "VPE loader support."
2307 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2308 select CPU_MIPSR2_IRQ_VI
2309 select CPU_MIPSR2_IRQ_EI
2312 Includes a loader for loading an elf relocatable object
2313 onto another VPE and running it.
2315 config MIPS_VPE_LOADER_CMP
2318 depends on MIPS_VPE_LOADER && MIPS_CMP
2320 config MIPS_VPE_LOADER_MT
2323 depends on MIPS_VPE_LOADER && !MIPS_CMP
2325 config MIPS_VPE_LOADER_TOM
2326 bool "Load VPE program into memory hidden from linux"
2327 depends on MIPS_VPE_LOADER
2330 The loader can use memory that is present but has been hidden from
2331 Linux using the kernel command line option "mem=xxMB". It's up to
2332 you to ensure the amount you put in the option and the space your
2333 program requires is less or equal to the amount physically present.
2335 config MIPS_VPE_APSP_API
2336 bool "Enable support for AP/SP API (RTLX)"
2337 depends on MIPS_VPE_LOADER
2339 config MIPS_VPE_APSP_API_CMP
2342 depends on MIPS_VPE_APSP_API && MIPS_CMP
2344 config MIPS_VPE_APSP_API_MT
2347 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2350 bool "MIPS CMP framework support (DEPRECATED)"
2351 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2354 select SYS_SUPPORTS_SMP
2355 select WEAK_ORDERING
2358 Select this if you are using a bootloader which implements the "CMP
2359 framework" protocol (ie. YAMON) and want your kernel to make use of
2360 its ability to start secondary CPUs.
2362 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2366 bool "MIPS Coherent Processing System support"
2367 depends on SYS_SUPPORTS_MIPS_CPS
2369 select MIPS_CPS_PM if HOTPLUG_CPU
2371 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2372 select SYS_SUPPORTS_HOTPLUG_CPU
2373 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2374 select SYS_SUPPORTS_SMP
2375 select WEAK_ORDERING
2377 Select this if you wish to run an SMP kernel across multiple cores
2378 within a MIPS Coherent Processing System. When this option is
2379 enabled the kernel will probe for other cores and boot them with
2380 no external assistance. It is safe to enable this when hardware
2381 support is unavailable.
2394 config SB1_PASS_2_WORKAROUNDS
2396 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2399 config SB1_PASS_2_1_WORKAROUNDS
2401 depends on CPU_SB1 && CPU_SB1_PASS_2
2406 prompt "SmartMIPS or microMIPS ASE support"
2408 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2411 Select this if you want neither microMIPS nor SmartMIPS support
2413 config CPU_HAS_SMARTMIPS
2414 depends on SYS_SUPPORTS_SMARTMIPS
2417 SmartMIPS is a extension of the MIPS32 architecture aimed at
2418 increased security at both hardware and software level for
2419 smartcards. Enabling this option will allow proper use of the
2420 SmartMIPS instructions by Linux applications. However a kernel with
2421 this option will not work on a MIPS core without SmartMIPS core. If
2422 you don't know you probably don't have SmartMIPS and should say N
2425 config CPU_MICROMIPS
2426 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2429 When this option is enabled the kernel will be built using the
2435 bool "Support for the MIPS SIMD Architecture"
2436 depends on CPU_SUPPORTS_MSA
2437 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2439 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2440 and a set of SIMD instructions to operate on them. When this option
2441 is enabled the kernel will support allocating & switching MSA
2442 vector register contexts. If you know that your kernel will only be
2443 running on CPUs which do not support MSA or that your userland will
2444 not be making use of it then you may wish to say N here to reduce
2445 the size & complexity of your kernel.
2459 # Vectored interrupt mode is an R2 feature
2461 config CPU_MIPSR2_IRQ_VI
2465 # Extended interrupt mode is an R2 feature
2467 config CPU_MIPSR2_IRQ_EI
2472 depends on !CPU_R3000
2478 config CPU_DADDI_WORKAROUNDS
2481 config CPU_R4000_WORKAROUNDS
2483 select CPU_R4400_WORKAROUNDS
2485 config CPU_R4400_WORKAROUNDS
2488 config MIPS_ASID_SHIFT
2490 default 6 if CPU_R3000 || CPU_TX39XX
2491 default 4 if CPU_R8000
2494 config MIPS_ASID_BITS
2496 default 0 if MIPS_ASID_BITS_VARIABLE
2497 default 6 if CPU_R3000 || CPU_TX39XX
2500 config MIPS_ASID_BITS_VARIABLE
2503 config MIPS_CRC_SUPPORT
2507 # - Highmem only makes sense for the 32-bit kernel.
2508 # - The current highmem code will only work properly on physically indexed
2509 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2510 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2511 # moment we protect the user and offer the highmem option only on machines
2512 # where it's known to be safe. This will not offer highmem on a few systems
2513 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2514 # indexed CPUs but we're playing safe.
2515 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2516 # know they might have memory configurations that could make use of highmem
2520 bool "High Memory Support"
2521 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2523 config CPU_SUPPORTS_HIGHMEM
2526 config SYS_SUPPORTS_HIGHMEM
2529 config SYS_SUPPORTS_SMARTMIPS
2532 config SYS_SUPPORTS_MICROMIPS
2535 config SYS_SUPPORTS_MIPS16
2538 This option must be set if a kernel might be executed on a MIPS16-
2539 enabled CPU even if MIPS16 is not actually being used. In other
2540 words, it makes the kernel MIPS16-tolerant.
2542 config CPU_SUPPORTS_MSA
2545 config ARCH_FLATMEM_ENABLE
2547 depends on !NUMA && !CPU_LOONGSON2
2549 config ARCH_DISCONTIGMEM_ENABLE
2551 default y if SGI_IP27
2553 Say Y to support efficient handling of discontiguous physical memory,
2554 for architectures which are either NUMA (Non-Uniform Memory Access)
2555 or have huge holes in the physical address space for other reasons.
2556 See <file:Documentation/vm/numa.rst> for more.
2558 config ARCH_SPARSEMEM_ENABLE
2560 select SPARSEMEM_STATIC
2564 depends on SYS_SUPPORTS_NUMA
2566 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2567 Access). This option improves performance on systems with more
2568 than two nodes; on two node systems it is generally better to
2569 leave it disabled; on single node systems disable this option
2572 config SYS_SUPPORTS_NUMA
2576 bool "Relocatable kernel"
2577 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2579 This builds a kernel image that retains relocation information
2580 so it can be loaded someplace besides the default 1MB.
2581 The relocations make the kernel binary about 15% larger,
2582 but are discarded at runtime
2584 config RELOCATION_TABLE_SIZE
2585 hex "Relocation table size"
2586 depends on RELOCATABLE
2587 range 0x0 0x01000000
2588 default "0x00100000"
2590 A table of relocation data will be appended to the kernel binary
2591 and parsed at boot to fix up the relocated kernel.
2593 This option allows the amount of space reserved for the table to be
2594 adjusted, although the default of 1Mb should be ok in most cases.
2596 The build will fail and a valid size suggested if this is too small.
2598 If unsure, leave at the default value.
2600 config RANDOMIZE_BASE
2601 bool "Randomize the address of the kernel image"
2602 depends on RELOCATABLE
2604 Randomizes the physical and virtual address at which the
2605 kernel image is loaded, as a security feature that
2606 deters exploit attempts relying on knowledge of the location
2607 of kernel internals.
2609 Entropy is generated using any coprocessor 0 registers available.
2611 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2615 config RANDOMIZE_BASE_MAX_OFFSET
2616 hex "Maximum kASLR offset" if EXPERT
2617 depends on RANDOMIZE_BASE
2618 range 0x0 0x40000000 if EVA || 64BIT
2619 range 0x0 0x08000000
2620 default "0x01000000"
2622 When kASLR is active, this provides the maximum offset that will
2623 be applied to the kernel image. It should be set according to the
2624 amount of physical RAM available in the target system minus
2625 PHYSICAL_START and must be a power of 2.
2627 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2628 EVA or 64-bit. The default is 16Mb.
2633 depends on NEED_MULTIPLE_NODES
2635 config HW_PERF_EVENTS
2636 bool "Enable hardware performance counter support for perf events"
2637 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2640 Enable hardware performance counter support for perf events. If
2641 disabled, perf events will use software events only.
2644 bool "Multi-Processing support"
2645 depends on SYS_SUPPORTS_SMP
2647 This enables support for systems with more than one CPU. If you have
2648 a system with only one CPU, say N. If you have a system with more
2649 than one CPU, say Y.
2651 If you say N here, the kernel will run on uni- and multiprocessor
2652 machines, but will use only one CPU of a multiprocessor machine. If
2653 you say Y here, the kernel will run on many, but not all,
2654 uniprocessor machines. On a uniprocessor machine, the kernel
2655 will run faster if you say N here.
2657 People using multiprocessor machines who say Y here should also say
2658 Y to "Enhanced Real Time Clock Support", below.
2660 See also the SMP-HOWTO available at
2661 <http://www.tldp.org/docs.html#howto>.
2663 If you don't know what to do here, say N.
2666 bool "Support for hot-pluggable CPUs"
2667 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2669 Say Y here to allow turning CPUs off and on. CPUs can be
2670 controlled through /sys/devices/system/cpu.
2671 (Note: power management support will enable this option
2672 automatically on SMP systems. )
2673 Say N if you want to disable CPU hotplug.
2678 config SYS_SUPPORTS_MIPS_CMP
2681 config SYS_SUPPORTS_MIPS_CPS
2684 config SYS_SUPPORTS_SMP
2687 config NR_CPUS_DEFAULT_4
2690 config NR_CPUS_DEFAULT_8
2693 config NR_CPUS_DEFAULT_16
2696 config NR_CPUS_DEFAULT_32
2699 config NR_CPUS_DEFAULT_64
2703 int "Maximum number of CPUs (2-256)"
2706 default "4" if NR_CPUS_DEFAULT_4
2707 default "8" if NR_CPUS_DEFAULT_8
2708 default "16" if NR_CPUS_DEFAULT_16
2709 default "32" if NR_CPUS_DEFAULT_32
2710 default "64" if NR_CPUS_DEFAULT_64
2712 This allows you to specify the maximum number of CPUs which this
2713 kernel will support. The maximum supported value is 32 for 32-bit
2714 kernel and 64 for 64-bit kernels; the minimum value which makes
2715 sense is 1 for Qemu (useful only for kernel debugging purposes)
2716 and 2 for all others.
2718 This is purely to save memory - each supported CPU adds
2719 approximately eight kilobytes to the kernel image. For best
2720 performance should round up your number of processors to the next
2723 config MIPS_PERF_SHARED_TC_COUNTERS
2726 config MIPS_NR_CPU_NR_MAP_1024
2729 config MIPS_NR_CPU_NR_MAP
2732 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2733 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2736 # Timer Interrupt Frequency Configuration
2740 prompt "Timer frequency"
2743 Allows the configuration of the timer frequency.
2746 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2749 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2752 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2755 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2758 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2761 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2764 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2767 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2771 config SYS_SUPPORTS_24HZ
2774 config SYS_SUPPORTS_48HZ
2777 config SYS_SUPPORTS_100HZ
2780 config SYS_SUPPORTS_128HZ
2783 config SYS_SUPPORTS_250HZ
2786 config SYS_SUPPORTS_256HZ
2789 config SYS_SUPPORTS_1000HZ
2792 config SYS_SUPPORTS_1024HZ
2795 config SYS_SUPPORTS_ARBIT_HZ
2797 default y if !SYS_SUPPORTS_24HZ && \
2798 !SYS_SUPPORTS_48HZ && \
2799 !SYS_SUPPORTS_100HZ && \
2800 !SYS_SUPPORTS_128HZ && \
2801 !SYS_SUPPORTS_250HZ && \
2802 !SYS_SUPPORTS_256HZ && \
2803 !SYS_SUPPORTS_1000HZ && \
2804 !SYS_SUPPORTS_1024HZ
2810 default 100 if HZ_100
2811 default 128 if HZ_128
2812 default 250 if HZ_250
2813 default 256 if HZ_256
2814 default 1000 if HZ_1000
2815 default 1024 if HZ_1024
2818 def_bool HIGH_RES_TIMERS
2821 bool "Kexec system call"
2824 kexec is a system call that implements the ability to shutdown your
2825 current kernel, and to start another kernel. It is like a reboot
2826 but it is independent of the system firmware. And like a reboot
2827 you can start any kernel with it, not just Linux.
2829 The name comes from the similarity to the exec system call.
2831 It is an ongoing process to be certain the hardware in a machine
2832 is properly shutdown, so do not be surprised if this code does not
2833 initially work for you. As of this writing the exact hardware
2834 interface is strongly in flux, so no good recommendation can be
2838 bool "Kernel crash dumps"
2840 Generate crash dump after being started by kexec.
2841 This should be normally only set in special crash dump kernels
2842 which are loaded in the main kernel with kexec-tools into
2843 a specially reserved region and then later executed after
2844 a crash by kdump/kexec. The crash dump kernel must be compiled
2845 to a memory address not used by the main kernel or firmware using
2848 config PHYSICAL_START
2849 hex "Physical address where the kernel is loaded"
2850 default "0xffffffff84000000"
2851 depends on CRASH_DUMP
2853 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2854 If you plan to use kernel for capturing the crash dump change
2855 this value to start of the reserved region (the "X" value as
2856 specified in the "crashkernel=YM@XM" command line boot parameter
2857 passed to the panic-ed kernel).
2860 bool "Enable seccomp to safely compute untrusted bytecode"
2864 This kernel feature is useful for number crunching applications
2865 that may need to compute untrusted bytecode during their
2866 execution. By using pipes or other transports made available to
2867 the process as file descriptors supporting the read/write
2868 syscalls, it's possible to isolate those applications in
2869 their own address space using seccomp. Once seccomp is
2870 enabled via /proc/<pid>/seccomp, it cannot be disabled
2871 and the task is only allowed to execute a few safe syscalls
2872 defined by each seccomp mode.
2874 If unsure, say Y. Only embedded should say N here.
2876 config MIPS_O32_FP64_SUPPORT
2877 bool "Support for O32 binaries using 64-bit FP"
2878 depends on 32BIT || MIPS32_O32
2880 When this is enabled, the kernel will support use of 64-bit floating
2881 point registers with binaries using the O32 ABI along with the
2882 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2883 32-bit MIPS systems this support is at the cost of increasing the
2884 size and complexity of the compiled FPU emulator. Thus if you are
2885 running a MIPS32 system and know that none of your userland binaries
2886 will require 64-bit floating point, you may wish to reduce the size
2887 of your kernel & potentially improve FP emulation performance by
2890 Although binutils currently supports use of this flag the details
2891 concerning its effect upon the O32 ABI in userland are still being
2892 worked on. In order to avoid userland becoming dependant upon current
2893 behaviour before the details have been finalised, this option should
2894 be considered experimental and only enabled by those working upon
2902 select OF_EARLY_FLATTREE
2909 prompt "Kernel appended dtb support" if USE_OF
2910 default MIPS_NO_APPENDED_DTB
2912 config MIPS_NO_APPENDED_DTB
2915 Do not enable appended dtb support.
2917 config MIPS_ELF_APPENDED_DTB
2920 With this option, the boot code will look for a device tree binary
2921 DTB) included in the vmlinux ELF section .appended_dtb. By default
2922 it is empty and the DTB can be appended using binutils command
2925 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2927 This is meant as a backward compatiblity convenience for those
2928 systems with a bootloader that can't be upgraded to accommodate
2929 the documented boot protocol using a device tree.
2931 config MIPS_RAW_APPENDED_DTB
2932 bool "vmlinux.bin or vmlinuz.bin"
2934 With this option, the boot code will look for a device tree binary
2935 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2936 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2938 This is meant as a backward compatibility convenience for those
2939 systems with a bootloader that can't be upgraded to accommodate
2940 the documented boot protocol using a device tree.
2942 Beware that there is very little in terms of protection against
2943 this option being confused by leftover garbage in memory that might
2944 look like a DTB header after a reboot if no actual DTB is appended
2945 to vmlinux.bin. Do not leave this option active in a production kernel
2946 if you don't intend to always append a DTB.
2950 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2951 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2954 default MIPS_CMDLINE_FROM_BOOTLOADER
2956 config MIPS_CMDLINE_FROM_DTB
2958 bool "Dtb kernel arguments if available"
2960 config MIPS_CMDLINE_DTB_EXTEND
2962 bool "Extend dtb kernel arguments with bootloader arguments"
2964 config MIPS_CMDLINE_FROM_BOOTLOADER
2965 bool "Bootloader kernel arguments if available"
2967 config MIPS_CMDLINE_BUILTIN_EXTEND
2968 depends on CMDLINE_BOOL
2969 bool "Extend builtin kernel arguments with bootloader arguments"
2974 config LOCKDEP_SUPPORT
2978 config STACKTRACE_SUPPORT
2982 config HAVE_LATENCYTOP_SUPPORT
2986 config PGTABLE_LEVELS
2988 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
2989 default 3 if 64BIT && !PAGE_SIZE_64KB
2992 config MIPS_AUTO_PFN_OFFSET
2995 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3003 bool "Support for PCI controller"
3004 depends on HW_HAS_PCI
3007 Find out whether you have a PCI motherboard. PCI is the name of a
3008 bus system, i.e. the way the CPU talks to the other stuff inside
3009 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
3013 bool "Support for HT-linked PCI"
3015 depends on CPU_LOONGSON3
3019 Loongson family machines use Hyper-Transport bus for inter-core
3020 connection and device connection. The PCI bus is a subordinate
3021 linked at HT. Choose Y for Loongson-3 based machines.
3026 config PCI_DOMAINS_GENERIC
3029 config PCI_DRIVERS_GENERIC
3030 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3033 config PCI_DRIVERS_LEGACY
3034 def_bool !PCI_DRIVERS_GENERIC
3035 select NO_GENERIC_PCI_IOPORT_MAP
3037 source "drivers/pci/Kconfig"
3040 # ISA support is now enabled via select. Too many systems still have the one
3041 # or other ISA chip on the board that users don't know about so don't expect
3042 # users to choose the right thing ...
3049 depends on HW_HAS_EISA
3051 select GENERIC_ISA_DMA
3053 The Extended Industry Standard Architecture (EISA) bus was
3054 developed as an open alternative to the IBM MicroChannel bus.
3056 The EISA bus provided some of the features of the IBM MicroChannel
3057 bus while maintaining backward compatibility with cards made for
3058 the older ISA bus. The EISA bus saw limited use between 1988 and
3059 1995 when it was made obsolete by the PCI bus.
3061 Say Y here if you are building a kernel for an EISA-based machine.
3065 source "drivers/eisa/Kconfig"
3068 bool "TURBOchannel support"
3069 depends on MACH_DECSTATION
3071 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3072 processors. TURBOchannel programming specifications are available
3074 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3076 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3077 Linux driver support status is documented at:
3078 <http://www.linux-mips.org/wiki/DECstation>
3084 config ARCH_MMAP_RND_BITS_MIN
3088 config ARCH_MMAP_RND_BITS_MAX
3092 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3095 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3102 select MIPS_EXTERNAL_TIMER
3110 source "drivers/pcmcia/Kconfig"
3117 tristate "RapidIO support"
3118 depends on HAS_RAPIDIO || PCI
3120 If you say Y here, the kernel will include drivers and
3121 infrastructure code to support RapidIO interconnect devices.
3123 source "drivers/rapidio/Kconfig"
3130 config MIPS32_COMPAT
3136 config SYSVIPC_COMPAT
3140 bool "Kernel support for o32 binaries"
3142 select ARCH_WANT_OLD_COMPAT_IPC
3144 select MIPS32_COMPAT
3145 select SYSVIPC_COMPAT if SYSVIPC
3147 Select this option if you want to run o32 binaries. These are pure
3148 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3149 existing binaries are in this format.
3154 bool "Kernel support for n32 binaries"
3156 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3158 select MIPS32_COMPAT
3159 select SYSVIPC_COMPAT if SYSVIPC
3161 Select this option if you want to run n32 binaries. These are
3162 64-bit binaries using 32-bit quantities for addressing and certain
3163 data that would normally be 64-bit. They are used in special
3170 default y if MIPS32_O32 || MIPS32_N32
3173 menu "Power management options"
3175 config ARCH_HIBERNATION_POSSIBLE
3177 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3179 config ARCH_SUSPEND_POSSIBLE
3181 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3183 source "kernel/power/Kconfig"
3187 config MIPS_EXTERNAL_TIMER
3190 menu "CPU Power Management"
3192 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3193 source "drivers/cpufreq/Kconfig"
3196 source "drivers/cpuidle/Kconfig"
3200 source "drivers/firmware/Kconfig"
3202 source "arch/mips/kvm/Kconfig"