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_JUMP_LABEL
38 select HAVE_ARCH_MMAP_RND_BITS if MMU
39 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
40 select HAVE_ARCH_SECCOMP_FILTER
41 select HAVE_ARCH_TRACEHOOK
42 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
43 select HAVE_CBPF_JIT if (!64BIT && !CPU_MICROMIPS)
44 select HAVE_EBPF_JIT if (64BIT && !CPU_MICROMIPS)
45 select HAVE_CONTEXT_TRACKING
46 select HAVE_COPY_THREAD_TLS
47 select HAVE_C_RECORDMCOUNT
48 select HAVE_DEBUG_KMEMLEAK
49 select HAVE_DEBUG_STACKOVERFLOW
50 select HAVE_DMA_CONTIGUOUS
51 select HAVE_DYNAMIC_FTRACE
52 select HAVE_EXIT_THREAD
53 select HAVE_FTRACE_MCOUNT_RECORD
54 select HAVE_FUNCTION_GRAPH_TRACER
55 select HAVE_FUNCTION_TRACER
56 select HAVE_GENERIC_DMA_COHERENT
58 select HAVE_IRQ_EXIT_ON_IRQ_STACK
59 select HAVE_IRQ_TIME_ACCOUNTING
61 select HAVE_KRETPROBES
63 select HAVE_MEMBLOCK_NODE_MAP
64 select HAVE_MOD_ARCH_SPECIFIC
67 select HAVE_PERF_EVENTS
68 select HAVE_REGS_AND_STACK_ACCESS_API
70 select HAVE_STACKPROTECTOR
71 select HAVE_SYSCALL_TRACEPOINTS
72 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
73 select IRQ_FORCED_THREADING
74 select MODULES_USE_ELF_RELA if MODULES && 64BIT
75 select MODULES_USE_ELF_REL if MODULES
76 select PERF_USE_VMALLOC
77 select RTC_LIB if !MACH_LOONGSON64
78 select SYSCTL_EXCEPTION_TRACE
81 menu "Machine selection"
88 bool "Generic board-agnostic MIPS kernel"
92 select CLKSRC_MIPS_GIC
94 select CPU_MIPSR2_IRQ_VI
95 select CPU_MIPSR2_IRQ_EI
97 select DMA_PERDEV_COHERENT
101 select MIPS_AUTO_PFN_OFFSET
102 select MIPS_CPU_SCACHE
104 select MIPS_L1_CACHE_SHIFT_7
105 select NO_EXCEPT_FILL
106 select PCI_DRIVERS_GENERIC
110 select SYS_HAS_CPU_MIPS32_R1
111 select SYS_HAS_CPU_MIPS32_R2
112 select SYS_HAS_CPU_MIPS32_R6
113 select SYS_HAS_CPU_MIPS64_R1
114 select SYS_HAS_CPU_MIPS64_R2
115 select SYS_HAS_CPU_MIPS64_R6
116 select SYS_SUPPORTS_32BIT_KERNEL
117 select SYS_SUPPORTS_64BIT_KERNEL
118 select SYS_SUPPORTS_BIG_ENDIAN
119 select SYS_SUPPORTS_HIGHMEM
120 select SYS_SUPPORTS_LITTLE_ENDIAN
121 select SYS_SUPPORTS_MICROMIPS
122 select SYS_SUPPORTS_MIPS_CPS
123 select SYS_SUPPORTS_MIPS16
124 select SYS_SUPPORTS_MULTITHREADING
125 select SYS_SUPPORTS_RELOCATABLE
126 select SYS_SUPPORTS_SMARTMIPS
127 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
128 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
129 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
130 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
131 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
132 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
135 Select this to build a kernel which aims to support multiple boards,
136 generally using a flattened device tree passed from the bootloader
137 using the boot protocol defined in the UHI (Unified Hosting
138 Interface) specification.
141 bool "Alchemy processor based machines"
142 select PHYS_ADDR_T_64BIT
146 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
147 select SYS_HAS_CPU_MIPS32_R1
148 select SYS_SUPPORTS_32BIT_KERNEL
149 select SYS_SUPPORTS_APM_EMULATION
151 select SYS_SUPPORTS_ZBOOT
155 bool "Texas Instruments AR7"
157 select DMA_NONCOHERENT
161 select NO_EXCEPT_FILL
163 select SYS_HAS_CPU_MIPS32_R1
164 select SYS_HAS_EARLY_PRINTK
165 select SYS_SUPPORTS_32BIT_KERNEL
166 select SYS_SUPPORTS_LITTLE_ENDIAN
167 select SYS_SUPPORTS_MIPS16
168 select SYS_SUPPORTS_ZBOOT_UART16550
173 Support for the Texas Instruments AR7 System-on-a-Chip
174 family: TNETD7100, 7200 and 7300.
177 bool "Atheros AR231x/AR531x SoC support"
180 select DMA_NONCOHERENT
183 select SYS_HAS_CPU_MIPS32_R1
184 select SYS_SUPPORTS_BIG_ENDIAN
185 select SYS_SUPPORTS_32BIT_KERNEL
186 select SYS_HAS_EARLY_PRINTK
188 Support for Atheros AR231x and Atheros AR531x based boards
191 bool "Atheros AR71XX/AR724X/AR913X based boards"
192 select ARCH_HAS_RESET_CONTROLLER
196 select DMA_NONCOHERENT
204 select SYS_HAS_CPU_MIPS32_R2
205 select SYS_HAS_EARLY_PRINTK
206 select SYS_SUPPORTS_32BIT_KERNEL
207 select SYS_SUPPORTS_BIG_ENDIAN
208 select SYS_SUPPORTS_MIPS16
209 select SYS_SUPPORTS_ZBOOT_UART_PROM
211 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
213 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
216 bool "Broadcom Generic BMIPS kernel"
217 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
218 select ARCH_HAS_PHYS_TO_DMA
220 select NO_EXCEPT_FILL
226 select BCM6345_L1_IRQ
227 select BCM7038_L1_IRQ
228 select BCM7120_L2_IRQ
229 select BRCMSTB_L2_IRQ
231 select DMA_NONCOHERENT
232 select SYS_SUPPORTS_32BIT_KERNEL
233 select SYS_SUPPORTS_LITTLE_ENDIAN
234 select SYS_SUPPORTS_BIG_ENDIAN
235 select SYS_SUPPORTS_HIGHMEM
236 select SYS_HAS_CPU_BMIPS32_3300
237 select SYS_HAS_CPU_BMIPS4350
238 select SYS_HAS_CPU_BMIPS4380
239 select SYS_HAS_CPU_BMIPS5000
241 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
242 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
243 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
244 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
245 select HARDIRQS_SW_RESEND
247 Build a generic DT-based kernel image that boots on select
248 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
249 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
250 must be set appropriately for your board.
253 bool "Broadcom BCM47XX based boards"
257 select DMA_NONCOHERENT
260 select SYS_HAS_CPU_MIPS32_R1
261 select NO_EXCEPT_FILL
262 select SYS_SUPPORTS_32BIT_KERNEL
263 select SYS_SUPPORTS_LITTLE_ENDIAN
264 select SYS_SUPPORTS_MIPS16
265 select SYS_SUPPORTS_ZBOOT
266 select SYS_HAS_EARLY_PRINTK
267 select USE_GENERIC_EARLY_PRINTK_8250
269 select LEDS_GPIO_REGISTER
272 select BCM47XX_SSB if !BCM47XX_BCMA
274 Support for BCM47XX based boards
277 bool "Broadcom BCM63XX based boards"
282 select DMA_NONCOHERENT
284 select SYS_SUPPORTS_32BIT_KERNEL
285 select SYS_SUPPORTS_BIG_ENDIAN
286 select SYS_HAS_EARLY_PRINTK
290 select MIPS_L1_CACHE_SHIFT_4
293 Support for BCM63XX based boards
300 select DMA_NONCOHERENT
306 select PCI_GT64XXX_PCI0
308 select SYS_HAS_CPU_NEVADA
309 select SYS_HAS_EARLY_PRINTK
310 select SYS_SUPPORTS_32BIT_KERNEL
311 select SYS_SUPPORTS_64BIT_KERNEL
312 select SYS_SUPPORTS_LITTLE_ENDIAN
313 select USE_GENERIC_EARLY_PRINTK_8250
315 config MACH_DECSTATION
319 select CEVT_R4K if CPU_R4X00
321 select CSRC_R4K if CPU_R4X00
322 select CPU_DADDI_WORKAROUNDS if 64BIT
323 select CPU_R4000_WORKAROUNDS if 64BIT
324 select CPU_R4400_WORKAROUNDS if 64BIT
325 select DMA_NONCOHERENT
328 select SYS_HAS_CPU_R3000
329 select SYS_HAS_CPU_R4X00
330 select SYS_SUPPORTS_32BIT_KERNEL
331 select SYS_SUPPORTS_64BIT_KERNEL
332 select SYS_SUPPORTS_LITTLE_ENDIAN
333 select SYS_SUPPORTS_128HZ
334 select SYS_SUPPORTS_256HZ
335 select SYS_SUPPORTS_1024HZ
336 select MIPS_L1_CACHE_SHIFT_4
338 This enables support for DEC's MIPS based workstations. For details
339 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
340 DECstation porting pages on <http://decstation.unix-ag.org/>.
342 If you have one of the following DECstation Models you definitely
343 want to choose R4xx0 for the CPU Type:
350 otherwise choose R3000.
353 bool "Jazz family of machines"
354 select ARCH_MIGHT_HAVE_PC_PARPORT
355 select ARCH_MIGHT_HAVE_PC_SERIO
358 select ARCH_MAY_HAVE_PC_FDC
361 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
362 select GENERIC_ISA_DMA
363 select HAVE_PCSPKR_PLATFORM
368 select SYS_HAS_CPU_R4X00
369 select SYS_SUPPORTS_32BIT_KERNEL
370 select SYS_SUPPORTS_64BIT_KERNEL
371 select SYS_SUPPORTS_100HZ
373 This a family of machines based on the MIPS R4030 chipset which was
374 used by several vendors to build RISC/os and Windows NT workstations.
375 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
376 Olivetti M700-10 workstations.
379 bool "Ingenic SoC based machines"
380 select SYS_SUPPORTS_32BIT_KERNEL
381 select SYS_SUPPORTS_LITTLE_ENDIAN
382 select SYS_SUPPORTS_ZBOOT_UART16550
383 select DMA_NONCOHERENT
388 select GENERIC_IRQ_CHIP
394 bool "Lantiq based platforms"
395 select DMA_NONCOHERENT
399 select SYS_HAS_CPU_MIPS32_R1
400 select SYS_HAS_CPU_MIPS32_R2
401 select SYS_SUPPORTS_BIG_ENDIAN
402 select SYS_SUPPORTS_32BIT_KERNEL
403 select SYS_SUPPORTS_MIPS16
404 select SYS_SUPPORTS_MULTITHREADING
405 select SYS_SUPPORTS_VPE_LOADER
406 select SYS_HAS_EARLY_PRINTK
413 select PINCTRL_LANTIQ
414 select ARCH_HAS_RESET_CONTROLLER
415 select RESET_CONTROLLER
418 bool "LASAT Networks platforms"
422 select DMA_NONCOHERENT
423 select SYS_HAS_EARLY_PRINTK
426 select PCI_GT64XXX_PCI0
428 select R5000_CPU_SCACHE
429 select SYS_HAS_CPU_R5000
430 select SYS_SUPPORTS_32BIT_KERNEL
431 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
432 select SYS_SUPPORTS_LITTLE_ENDIAN
434 config MACH_LOONGSON32
435 bool "Loongson-1 family of machines"
436 select SYS_SUPPORTS_ZBOOT
438 This enables support for the Loongson-1 family of machines.
440 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
441 the Institute of Computing Technology (ICT), Chinese Academy of
444 config MACH_LOONGSON64
445 bool "Loongson-2/3 family of machines"
446 select SYS_SUPPORTS_ZBOOT
448 This enables the support of Loongson-2/3 family of machines.
450 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
451 family of multi-core CPUs. They are both 64-bit general-purpose
452 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
453 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
454 in the People's Republic of China. The chief architect is Professor
457 config MACH_PISTACHIO
458 bool "IMG Pistachio SoC based boards"
462 select CLKSRC_MIPS_GIC
465 select DMA_NONCOHERENT
470 select MIPS_CPU_SCACHE
474 select SYS_HAS_CPU_MIPS32_R2
475 select SYS_SUPPORTS_32BIT_KERNEL
476 select SYS_SUPPORTS_LITTLE_ENDIAN
477 select SYS_SUPPORTS_MIPS_CPS
478 select SYS_SUPPORTS_MULTITHREADING
479 select SYS_SUPPORTS_RELOCATABLE
480 select SYS_SUPPORTS_ZBOOT
481 select SYS_HAS_EARLY_PRINTK
482 select USE_GENERIC_EARLY_PRINTK_8250
485 This enables support for the IMG Pistachio SoC platform.
488 bool "MIPS Malta board"
489 select ARCH_MAY_HAVE_PC_FDC
490 select ARCH_MIGHT_HAVE_PC_PARPORT
491 select ARCH_MIGHT_HAVE_PC_SERIO
497 select CLKSRC_MIPS_GIC
499 select DMA_MAYBE_COHERENT
500 select GENERIC_ISA_DMA
501 select HAVE_PCSPKR_PLATFORM
508 select MIPS_CPU_SCACHE
509 select MIPS_L1_CACHE_SHIFT_6
510 select PCI_GT64XXX_PCI0
514 select SYS_HAS_CPU_MIPS32_R1
515 select SYS_HAS_CPU_MIPS32_R2
516 select SYS_HAS_CPU_MIPS32_R3_5
517 select SYS_HAS_CPU_MIPS32_R5
518 select SYS_HAS_CPU_MIPS32_R6
519 select SYS_HAS_CPU_MIPS64_R1
520 select SYS_HAS_CPU_MIPS64_R2
521 select SYS_HAS_CPU_MIPS64_R6
522 select SYS_HAS_CPU_NEVADA
523 select SYS_HAS_CPU_RM7000
524 select SYS_SUPPORTS_32BIT_KERNEL
525 select SYS_SUPPORTS_64BIT_KERNEL
526 select SYS_SUPPORTS_BIG_ENDIAN
527 select SYS_SUPPORTS_HIGHMEM
528 select SYS_SUPPORTS_LITTLE_ENDIAN
529 select SYS_SUPPORTS_MICROMIPS
530 select SYS_SUPPORTS_MIPS_CMP
531 select SYS_SUPPORTS_MIPS_CPS
532 select SYS_SUPPORTS_MIPS16
533 select SYS_SUPPORTS_MULTITHREADING
534 select SYS_SUPPORTS_SMARTMIPS
535 select SYS_SUPPORTS_VPE_LOADER
536 select SYS_SUPPORTS_ZBOOT
537 select SYS_SUPPORTS_RELOCATABLE
540 select ZONE_DMA32 if 64BIT
544 This enables support for the MIPS Technologies Malta evaluation
548 bool "Microchip PIC32 Family"
550 This enables support for the Microchip PIC32 family of platforms.
552 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
556 bool "NEC EMMA2RH Mark-eins board"
560 This enables support for the NEC Electronics Mark-eins boards.
563 bool "NEC VR4100 series based machines"
566 select SYS_HAS_CPU_VR41XX
567 select SYS_SUPPORTS_MIPS16
571 bool "NXP STB220 board"
574 Support for NXP Semiconductors STB220 Development Board.
581 Support for NXP Semiconductors STB225 Development Board.
584 bool "PMC-Sierra MSP chipsets"
587 select DMA_NONCOHERENT
589 select NO_EXCEPT_FILL
591 select SYS_HAS_CPU_MIPS32_R1
592 select SYS_HAS_CPU_MIPS32_R2
593 select SYS_SUPPORTS_32BIT_KERNEL
594 select SYS_SUPPORTS_BIG_ENDIAN
595 select SYS_SUPPORTS_MIPS16
598 select SERIAL_8250_CONSOLE
599 select USB_EHCI_BIG_ENDIAN_MMIO
600 select USB_EHCI_BIG_ENDIAN_DESC
602 This adds support for the PMC-Sierra family of Multi-Service
603 Processor System-On-A-Chips. These parts include a number
604 of integrated peripherals, interfaces and DSPs in addition to
605 a variety of MIPS cores.
608 bool "Ralink based machines"
612 select DMA_NONCOHERENT
615 select SYS_HAS_CPU_MIPS32_R1
616 select SYS_HAS_CPU_MIPS32_R2
617 select SYS_SUPPORTS_32BIT_KERNEL
618 select SYS_SUPPORTS_LITTLE_ENDIAN
619 select SYS_SUPPORTS_MIPS16
620 select SYS_HAS_EARLY_PRINTK
622 select ARCH_HAS_RESET_CONTROLLER
623 select RESET_CONTROLLER
626 bool "SGI IP22 (Indy/Indigo2)"
629 select ARCH_MIGHT_HAVE_PC_SERIO
633 select DEFAULT_SGI_PARTITION
634 select DMA_NONCOHERENT
638 select IP22_CPU_SCACHE
640 select GENERIC_ISA_DMA_SUPPORT_BROKEN
642 select SGI_HAS_INDYDOG
648 select SYS_HAS_CPU_R4X00
649 select SYS_HAS_CPU_R5000
651 # Disable EARLY_PRINTK for now since it leads to overwritten prom
652 # memory during early boot on some machines.
654 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
655 # for a more details discussion
657 # select SYS_HAS_EARLY_PRINTK
658 select SYS_SUPPORTS_32BIT_KERNEL
659 select SYS_SUPPORTS_64BIT_KERNEL
660 select SYS_SUPPORTS_BIG_ENDIAN
661 select MIPS_L1_CACHE_SHIFT_7
663 This are the SGI Indy, Challenge S and Indigo2, as well as certain
664 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
665 that runs on these, say Y here.
668 bool "SGI IP27 (Origin200/2000)"
669 select ARCH_HAS_PHYS_TO_DMA
673 select DEFAULT_SGI_PARTITION
674 select SYS_HAS_EARLY_PRINTK
676 select NR_CPUS_DEFAULT_64
677 select SYS_HAS_CPU_R10000
678 select SYS_SUPPORTS_64BIT_KERNEL
679 select SYS_SUPPORTS_BIG_ENDIAN
680 select SYS_SUPPORTS_NUMA
681 select SYS_SUPPORTS_SMP
682 select MIPS_L1_CACHE_SHIFT_7
684 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
685 workstations. To compile a Linux kernel that runs on these, say Y
689 bool "SGI IP28 (Indigo2 R10k)"
692 select ARCH_MIGHT_HAVE_PC_SERIO
696 select DEFAULT_SGI_PARTITION
697 select DMA_NONCOHERENT
698 select GENERIC_ISA_DMA_SUPPORT_BROKEN
704 select SGI_HAS_INDYDOG
710 select SYS_HAS_CPU_R10000
712 # Disable EARLY_PRINTK for now since it leads to overwritten prom
713 # memory during early boot on some machines.
715 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
716 # for a more details discussion
718 # select SYS_HAS_EARLY_PRINTK
719 select SYS_SUPPORTS_64BIT_KERNEL
720 select SYS_SUPPORTS_BIG_ENDIAN
721 select MIPS_L1_CACHE_SHIFT_7
723 This is the SGI Indigo2 with R10000 processor. To compile a Linux
724 kernel that runs on these, say Y here.
728 select ARCH_HAS_PHYS_TO_DMA
734 select DMA_NONCOHERENT
737 select R5000_CPU_SCACHE
738 select RM7000_CPU_SCACHE
739 select SYS_HAS_CPU_R5000
740 select SYS_HAS_CPU_R10000 if BROKEN
741 select SYS_HAS_CPU_RM7000
742 select SYS_HAS_CPU_NEVADA
743 select SYS_SUPPORTS_64BIT_KERNEL
744 select SYS_SUPPORTS_BIG_ENDIAN
746 If you want this kernel to run on SGI O2 workstation, say Y here.
749 bool "Sibyte BCM91120C-CRhine"
751 select SIBYTE_BCM1120
753 select SYS_HAS_CPU_SB1
754 select SYS_SUPPORTS_BIG_ENDIAN
755 select SYS_SUPPORTS_LITTLE_ENDIAN
758 bool "Sibyte BCM91120x-Carmel"
760 select SIBYTE_BCM1120
762 select SYS_HAS_CPU_SB1
763 select SYS_SUPPORTS_BIG_ENDIAN
764 select SYS_SUPPORTS_LITTLE_ENDIAN
767 bool "Sibyte BCM91125C-CRhone"
769 select SIBYTE_BCM1125
771 select SYS_HAS_CPU_SB1
772 select SYS_SUPPORTS_BIG_ENDIAN
773 select SYS_SUPPORTS_HIGHMEM
774 select SYS_SUPPORTS_LITTLE_ENDIAN
777 bool "Sibyte BCM91125E-Rhone"
779 select SIBYTE_BCM1125H
781 select SYS_HAS_CPU_SB1
782 select SYS_SUPPORTS_BIG_ENDIAN
783 select SYS_SUPPORTS_LITTLE_ENDIAN
786 bool "Sibyte BCM91250A-SWARM"
788 select HAVE_PATA_PLATFORM
791 select SYS_HAS_CPU_SB1
792 select SYS_SUPPORTS_BIG_ENDIAN
793 select SYS_SUPPORTS_HIGHMEM
794 select SYS_SUPPORTS_LITTLE_ENDIAN
795 select ZONE_DMA32 if 64BIT
797 config SIBYTE_LITTLESUR
798 bool "Sibyte BCM91250C2-LittleSur"
800 select HAVE_PATA_PLATFORM
803 select SYS_HAS_CPU_SB1
804 select SYS_SUPPORTS_BIG_ENDIAN
805 select SYS_SUPPORTS_HIGHMEM
806 select SYS_SUPPORTS_LITTLE_ENDIAN
808 config SIBYTE_SENTOSA
809 bool "Sibyte BCM91250E-Sentosa"
813 select SYS_HAS_CPU_SB1
814 select SYS_SUPPORTS_BIG_ENDIAN
815 select SYS_SUPPORTS_LITTLE_ENDIAN
818 bool "Sibyte BCM91480B-BigSur"
820 select NR_CPUS_DEFAULT_4
821 select SIBYTE_BCM1x80
823 select SYS_HAS_CPU_SB1
824 select SYS_SUPPORTS_BIG_ENDIAN
825 select SYS_SUPPORTS_HIGHMEM
826 select SYS_SUPPORTS_LITTLE_ENDIAN
827 select ZONE_DMA32 if 64BIT
830 bool "SNI RM200/300/400"
831 select FW_ARC if CPU_LITTLE_ENDIAN
832 select FW_ARC32 if CPU_LITTLE_ENDIAN
833 select FW_SNIPROM if CPU_BIG_ENDIAN
834 select ARCH_MAY_HAVE_PC_FDC
835 select ARCH_MIGHT_HAVE_PC_PARPORT
836 select ARCH_MIGHT_HAVE_PC_SERIO
840 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
841 select DMA_NONCOHERENT
842 select GENERIC_ISA_DMA
843 select HAVE_PCSPKR_PLATFORM
850 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
851 select SYS_HAS_CPU_R4X00
852 select SYS_HAS_CPU_R5000
853 select SYS_HAS_CPU_R10000
854 select R5000_CPU_SCACHE
855 select SYS_HAS_EARLY_PRINTK
856 select SYS_SUPPORTS_32BIT_KERNEL
857 select SYS_SUPPORTS_64BIT_KERNEL
858 select SYS_SUPPORTS_BIG_ENDIAN
859 select SYS_SUPPORTS_HIGHMEM
860 select SYS_SUPPORTS_LITTLE_ENDIAN
862 The SNI RM200/300/400 are MIPS-based machines manufactured by
863 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
864 Technology and now in turn merged with Fujitsu. Say Y here to
865 support this machine type.
868 bool "Toshiba TX39 series based machines"
871 bool "Toshiba TX49 series based machines"
873 config MIKROTIK_RB532
874 bool "Mikrotik RB532 boards"
877 select DMA_NONCOHERENT
880 select SYS_HAS_CPU_MIPS32_R1
881 select SYS_SUPPORTS_32BIT_KERNEL
882 select SYS_SUPPORTS_LITTLE_ENDIAN
886 select MIPS_L1_CACHE_SHIFT_4
888 Support the Mikrotik(tm) RouterBoard 532 series,
889 based on the IDT RC32434 SoC.
891 config CAVIUM_OCTEON_SOC
892 bool "Cavium Networks Octeon SoC based boards"
894 select ARCH_HAS_PHYS_TO_DMA
896 select PHYS_ADDR_T_64BIT
897 select SYS_SUPPORTS_64BIT_KERNEL
898 select SYS_SUPPORTS_BIG_ENDIAN
900 select EDAC_ATOMIC_SCRUB
901 select SYS_SUPPORTS_LITTLE_ENDIAN
902 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
903 select SYS_HAS_EARLY_PRINTK
904 select SYS_HAS_CPU_CAVIUM_OCTEON
911 select ARCH_SPARSEMEM_ENABLE
912 select SYS_SUPPORTS_SMP
913 select NR_CPUS_DEFAULT_64
914 select MIPS_NR_CPU_NR_MAP_1024
916 select MTD_COMPLEX_MAPPINGS
918 select SYS_SUPPORTS_RELOCATABLE
920 This option supports all of the Octeon reference boards from Cavium
921 Networks. It builds a kernel that dynamically determines the Octeon
922 CPU type and supports all known board reference implementations.
923 Some of the supported boards are:
930 Say Y here for most Octeon reference boards.
933 bool "Netlogic XLR/XLS based systems"
936 select SYS_HAS_CPU_XLR
937 select SYS_SUPPORTS_SMP
940 select SYS_SUPPORTS_32BIT_KERNEL
941 select SYS_SUPPORTS_64BIT_KERNEL
942 select PHYS_ADDR_T_64BIT
943 select SYS_SUPPORTS_BIG_ENDIAN
944 select SYS_SUPPORTS_HIGHMEM
945 select NR_CPUS_DEFAULT_32
949 select ZONE_DMA32 if 64BIT
951 select SYS_HAS_EARLY_PRINTK
952 select SYS_SUPPORTS_ZBOOT
953 select SYS_SUPPORTS_ZBOOT_UART16550
955 Support for systems based on Netlogic XLR and XLS processors.
956 Say Y here if you have a XLR or XLS based board.
959 bool "Netlogic XLP based systems"
962 select SYS_HAS_CPU_XLP
963 select SYS_SUPPORTS_SMP
965 select SYS_SUPPORTS_32BIT_KERNEL
966 select SYS_SUPPORTS_64BIT_KERNEL
967 select PHYS_ADDR_T_64BIT
969 select SYS_SUPPORTS_BIG_ENDIAN
970 select SYS_SUPPORTS_LITTLE_ENDIAN
971 select SYS_SUPPORTS_HIGHMEM
972 select NR_CPUS_DEFAULT_32
976 select ZONE_DMA32 if 64BIT
978 select SYS_HAS_EARLY_PRINTK
980 select SYS_SUPPORTS_ZBOOT
981 select SYS_SUPPORTS_ZBOOT_UART16550
983 This board is based on Netlogic XLP Processor.
984 Say Y here if you have a XLP based board.
987 bool "Para-Virtualized guest system"
990 select SYS_SUPPORTS_64BIT_KERNEL
991 select SYS_SUPPORTS_32BIT_KERNEL
992 select SYS_SUPPORTS_BIG_ENDIAN
993 select SYS_SUPPORTS_SMP
994 select NR_CPUS_DEFAULT_4
995 select SYS_HAS_EARLY_PRINTK
996 select SYS_HAS_CPU_MIPS32_R2
997 select SYS_HAS_CPU_MIPS64_R2
998 select SYS_HAS_CPU_CAVIUM_OCTEON
1000 select SWAP_IO_SPACE
1002 This option supports guest running under ????
1006 source "arch/mips/alchemy/Kconfig"
1007 source "arch/mips/ath25/Kconfig"
1008 source "arch/mips/ath79/Kconfig"
1009 source "arch/mips/bcm47xx/Kconfig"
1010 source "arch/mips/bcm63xx/Kconfig"
1011 source "arch/mips/bmips/Kconfig"
1012 source "arch/mips/generic/Kconfig"
1013 source "arch/mips/jazz/Kconfig"
1014 source "arch/mips/jz4740/Kconfig"
1015 source "arch/mips/lantiq/Kconfig"
1016 source "arch/mips/lasat/Kconfig"
1017 source "arch/mips/pic32/Kconfig"
1018 source "arch/mips/pistachio/Kconfig"
1019 source "arch/mips/pmcs-msp71xx/Kconfig"
1020 source "arch/mips/ralink/Kconfig"
1021 source "arch/mips/sgi-ip27/Kconfig"
1022 source "arch/mips/sibyte/Kconfig"
1023 source "arch/mips/txx9/Kconfig"
1024 source "arch/mips/vr41xx/Kconfig"
1025 source "arch/mips/cavium-octeon/Kconfig"
1026 source "arch/mips/loongson32/Kconfig"
1027 source "arch/mips/loongson64/Kconfig"
1028 source "arch/mips/netlogic/Kconfig"
1029 source "arch/mips/paravirt/Kconfig"
1033 config RWSEM_GENERIC_SPINLOCK
1037 config RWSEM_XCHGADD_ALGORITHM
1040 config GENERIC_HWEIGHT
1044 config GENERIC_CALIBRATE_DELAY
1048 config SCHED_OMIT_FRAME_POINTER
1053 # Select some configuration options automatically based on user selections.
1058 config ARCH_MAY_HAVE_PC_FDC
1094 config MIPS_CLOCK_VSYSCALL
1095 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1104 config ARCH_SUPPORTS_UPROBES
1107 config DMA_MAYBE_COHERENT
1108 select DMA_NONCOHERENT
1111 config DMA_PERDEV_COHERENT
1113 select DMA_MAYBE_COHERENT
1115 config DMA_NONCOHERENT
1117 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1118 select ARCH_HAS_SYNC_DMA_FOR_CPU
1119 select NEED_DMA_MAP_STATE
1120 select DMA_NONCOHERENT_MMAP
1121 select DMA_NONCOHERENT_CACHE_SYNC
1122 select DMA_NONCOHERENT_OPS
1124 config SYS_HAS_EARLY_PRINTK
1127 config SYS_SUPPORTS_HOTPLUG_CPU
1130 config MIPS_BONITO64
1145 config NO_IOPORT_MAP
1151 config GENERIC_ISA_DMA
1153 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1156 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1158 select GENERIC_ISA_DMA
1163 config HOLES_IN_ZONE
1166 config SYS_SUPPORTS_RELOCATABLE
1169 Selected if the platform supports relocating the kernel.
1170 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1171 to allow access to command line and entropy sources.
1173 config MIPS_CBPF_JIT
1175 depends on BPF_JIT && HAVE_CBPF_JIT
1177 config MIPS_EBPF_JIT
1179 depends on BPF_JIT && HAVE_EBPF_JIT
1183 # Endianness selection. Sufficiently obscure so many users don't know what to
1184 # answer,so we try hard to limit the available choices. Also the use of a
1185 # choice statement should be more obvious to the user.
1188 prompt "Endianness selection"
1190 Some MIPS machines can be configured for either little or big endian
1191 byte order. These modes require different kernels and a different
1192 Linux distribution. In general there is one preferred byteorder for a
1193 particular system but some systems are just as commonly used in the
1194 one or the other endianness.
1196 config CPU_BIG_ENDIAN
1198 depends on SYS_SUPPORTS_BIG_ENDIAN
1200 config CPU_LITTLE_ENDIAN
1201 bool "Little endian"
1202 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1209 config SYS_SUPPORTS_APM_EMULATION
1212 config SYS_SUPPORTS_BIG_ENDIAN
1215 config SYS_SUPPORTS_LITTLE_ENDIAN
1218 config SYS_SUPPORTS_HUGETLBFS
1220 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1223 config MIPS_HUGE_TLB_SUPPORT
1224 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1241 config PCI_GT64XXX_PCI0
1244 config NO_EXCEPT_FILL
1251 select DMA_NONCOHERENT
1253 select SWAP_IO_SPACE
1254 select SYS_HAS_CPU_R5500
1255 select SYS_SUPPORTS_32BIT_KERNEL
1256 select SYS_SUPPORTS_64BIT_KERNEL
1257 select SYS_SUPPORTS_BIG_ENDIAN
1264 select DMA_NONCOHERENT
1265 select SYS_HAS_CPU_MIPS32_R2
1266 select SYS_SUPPORTS_32BIT_KERNEL
1267 select SYS_SUPPORTS_LITTLE_ENDIAN
1268 select SYS_SUPPORTS_BIG_ENDIAN
1269 select SYS_SUPPORTS_MIPS16
1270 select CPU_MIPSR2_IRQ_VI
1279 config SWAP_IO_SPACE
1282 config SGI_HAS_INDYDOG
1294 config SGI_HAS_ZILOG
1297 config SGI_HAS_I8042
1300 config DEFAULT_SGI_PARTITION
1312 config MIPS_L1_CACHE_SHIFT_4
1315 config MIPS_L1_CACHE_SHIFT_5
1318 config MIPS_L1_CACHE_SHIFT_6
1321 config MIPS_L1_CACHE_SHIFT_7
1324 config MIPS_L1_CACHE_SHIFT
1326 default "7" if MIPS_L1_CACHE_SHIFT_7
1327 default "6" if MIPS_L1_CACHE_SHIFT_6
1328 default "5" if MIPS_L1_CACHE_SHIFT_5
1329 default "4" if MIPS_L1_CACHE_SHIFT_4
1332 config HAVE_STD_PC_SERIAL_PORT
1336 bool "ARC console support"
1337 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1341 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1346 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1355 menu "CPU selection"
1361 config CPU_LOONGSON3
1362 bool "Loongson 3 CPU"
1363 depends on SYS_HAS_CPU_LOONGSON3
1364 select ARCH_HAS_PHYS_TO_DMA
1365 select CPU_SUPPORTS_64BIT_KERNEL
1366 select CPU_SUPPORTS_HIGHMEM
1367 select CPU_SUPPORTS_HUGEPAGES
1368 select WEAK_ORDERING
1369 select WEAK_REORDERING_BEYOND_LLSC
1370 select MIPS_PGD_C0_CONTEXT
1371 select MIPS_L1_CACHE_SHIFT_6
1375 The Loongson 3 processor implements the MIPS64R2 instruction
1376 set with many extensions.
1378 config LOONGSON3_ENHANCEMENT
1379 bool "New Loongson 3 CPU Enhancements"
1382 select CPU_HAS_PREFETCH
1383 depends on CPU_LOONGSON3
1385 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1386 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1387 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1388 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1389 Fast TLB refill support, etc.
1391 This option enable those enhancements which are not probed at run
1392 time. If you want a generic kernel to run on all Loongson 3 machines,
1393 please say 'N' here. If you want a high-performance kernel to run on
1394 new Loongson 3 machines only, please say 'Y' here.
1396 config CPU_LOONGSON2E
1398 depends on SYS_HAS_CPU_LOONGSON2E
1399 select CPU_LOONGSON2
1401 The Loongson 2E processor implements the MIPS III instruction set
1402 with many extensions.
1404 It has an internal FPGA northbridge, which is compatible to
1407 config CPU_LOONGSON2F
1409 depends on SYS_HAS_CPU_LOONGSON2F
1410 select CPU_LOONGSON2
1413 The Loongson 2F processor implements the MIPS III instruction set
1414 with many extensions.
1416 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1417 have a similar programming interface with FPGA northbridge used in
1420 config CPU_LOONGSON1B
1422 depends on SYS_HAS_CPU_LOONGSON1B
1423 select CPU_LOONGSON1
1424 select LEDS_GPIO_REGISTER
1426 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1427 Release 1 instruction set and part of the MIPS32 Release 2
1430 config CPU_LOONGSON1C
1432 depends on SYS_HAS_CPU_LOONGSON1C
1433 select CPU_LOONGSON1
1434 select LEDS_GPIO_REGISTER
1436 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1437 Release 1 instruction set and part of the MIPS32 Release 2
1440 config CPU_MIPS32_R1
1441 bool "MIPS32 Release 1"
1442 depends on SYS_HAS_CPU_MIPS32_R1
1443 select CPU_HAS_PREFETCH
1444 select CPU_SUPPORTS_32BIT_KERNEL
1445 select CPU_SUPPORTS_HIGHMEM
1447 Choose this option to build a kernel for release 1 or later of the
1448 MIPS32 architecture. Most modern embedded systems with a 32-bit
1449 MIPS processor are based on a MIPS32 processor. If you know the
1450 specific type of processor in your system, choose those that one
1451 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1452 Release 2 of the MIPS32 architecture is available since several
1453 years so chances are you even have a MIPS32 Release 2 processor
1454 in which case you should choose CPU_MIPS32_R2 instead for better
1457 config CPU_MIPS32_R2
1458 bool "MIPS32 Release 2"
1459 depends on SYS_HAS_CPU_MIPS32_R2
1460 select CPU_HAS_PREFETCH
1461 select CPU_SUPPORTS_32BIT_KERNEL
1462 select CPU_SUPPORTS_HIGHMEM
1463 select CPU_SUPPORTS_MSA
1466 Choose this option to build a kernel for release 2 or later of the
1467 MIPS32 architecture. Most modern embedded systems with a 32-bit
1468 MIPS processor are based on a MIPS32 processor. If you know the
1469 specific type of processor in your system, choose those that one
1470 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1472 config CPU_MIPS32_R6
1473 bool "MIPS32 Release 6"
1474 depends on SYS_HAS_CPU_MIPS32_R6
1475 select CPU_HAS_PREFETCH
1476 select CPU_SUPPORTS_32BIT_KERNEL
1477 select CPU_SUPPORTS_HIGHMEM
1478 select CPU_SUPPORTS_MSA
1481 select MIPS_O32_FP64_SUPPORT
1483 Choose this option to build a kernel for release 6 or later of the
1484 MIPS32 architecture. New MIPS processors, starting with the Warrior
1485 family, are based on a MIPS32r6 processor. If you own an older
1486 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1488 config CPU_MIPS64_R1
1489 bool "MIPS64 Release 1"
1490 depends on SYS_HAS_CPU_MIPS64_R1
1491 select CPU_HAS_PREFETCH
1492 select CPU_SUPPORTS_32BIT_KERNEL
1493 select CPU_SUPPORTS_64BIT_KERNEL
1494 select CPU_SUPPORTS_HIGHMEM
1495 select CPU_SUPPORTS_HUGEPAGES
1497 Choose this option to build a kernel for release 1 or later of the
1498 MIPS64 architecture. Many modern embedded systems with a 64-bit
1499 MIPS processor are based on a MIPS64 processor. If you know the
1500 specific type of processor in your system, choose those that one
1501 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1502 Release 2 of the MIPS64 architecture is available since several
1503 years so chances are you even have a MIPS64 Release 2 processor
1504 in which case you should choose CPU_MIPS64_R2 instead for better
1507 config CPU_MIPS64_R2
1508 bool "MIPS64 Release 2"
1509 depends on SYS_HAS_CPU_MIPS64_R2
1510 select CPU_HAS_PREFETCH
1511 select CPU_SUPPORTS_32BIT_KERNEL
1512 select CPU_SUPPORTS_64BIT_KERNEL
1513 select CPU_SUPPORTS_HIGHMEM
1514 select CPU_SUPPORTS_HUGEPAGES
1515 select CPU_SUPPORTS_MSA
1518 Choose this option to build a kernel for release 2 or later of the
1519 MIPS64 architecture. Many modern embedded systems with a 64-bit
1520 MIPS processor are based on a MIPS64 processor. If you know the
1521 specific type of processor in your system, choose those that one
1522 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1524 config CPU_MIPS64_R6
1525 bool "MIPS64 Release 6"
1526 depends on SYS_HAS_CPU_MIPS64_R6
1527 select CPU_HAS_PREFETCH
1528 select CPU_SUPPORTS_32BIT_KERNEL
1529 select CPU_SUPPORTS_64BIT_KERNEL
1530 select CPU_SUPPORTS_HIGHMEM
1531 select CPU_SUPPORTS_MSA
1533 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1536 Choose this option to build a kernel for release 6 or later of the
1537 MIPS64 architecture. New MIPS processors, starting with the Warrior
1538 family, are based on a MIPS64r6 processor. If you own an older
1539 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1543 depends on SYS_HAS_CPU_R3000
1545 select CPU_SUPPORTS_32BIT_KERNEL
1546 select CPU_SUPPORTS_HIGHMEM
1548 Please make sure to pick the right CPU type. Linux/MIPS is not
1549 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1550 *not* work on R4000 machines and vice versa. However, since most
1551 of the supported machines have an R4000 (or similar) CPU, R4x00
1552 might be a safe bet. If the resulting kernel does not work,
1553 try to recompile with R3000.
1557 depends on SYS_HAS_CPU_TX39XX
1558 select CPU_SUPPORTS_32BIT_KERNEL
1562 depends on SYS_HAS_CPU_VR41XX
1563 select CPU_SUPPORTS_32BIT_KERNEL
1564 select CPU_SUPPORTS_64BIT_KERNEL
1566 The options selects support for the NEC VR4100 series of processors.
1567 Only choose this option if you have one of these processors as a
1568 kernel built with this option will not run on any other type of
1569 processor or vice versa.
1573 depends on SYS_HAS_CPU_R4300
1574 select CPU_SUPPORTS_32BIT_KERNEL
1575 select CPU_SUPPORTS_64BIT_KERNEL
1577 MIPS Technologies R4300-series processors.
1581 depends on SYS_HAS_CPU_R4X00
1582 select CPU_SUPPORTS_32BIT_KERNEL
1583 select CPU_SUPPORTS_64BIT_KERNEL
1584 select CPU_SUPPORTS_HUGEPAGES
1586 MIPS Technologies R4000-series processors other than 4300, including
1587 the R4000, R4400, R4600, and 4700.
1591 depends on SYS_HAS_CPU_TX49XX
1592 select CPU_HAS_PREFETCH
1593 select CPU_SUPPORTS_32BIT_KERNEL
1594 select CPU_SUPPORTS_64BIT_KERNEL
1595 select CPU_SUPPORTS_HUGEPAGES
1599 depends on SYS_HAS_CPU_R5000
1600 select CPU_SUPPORTS_32BIT_KERNEL
1601 select CPU_SUPPORTS_64BIT_KERNEL
1602 select CPU_SUPPORTS_HUGEPAGES
1604 MIPS Technologies R5000-series processors other than the Nevada.
1608 depends on SYS_HAS_CPU_R5432
1609 select CPU_SUPPORTS_32BIT_KERNEL
1610 select CPU_SUPPORTS_64BIT_KERNEL
1611 select CPU_SUPPORTS_HUGEPAGES
1615 depends on SYS_HAS_CPU_R5500
1616 select CPU_SUPPORTS_32BIT_KERNEL
1617 select CPU_SUPPORTS_64BIT_KERNEL
1618 select CPU_SUPPORTS_HUGEPAGES
1620 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1625 depends on SYS_HAS_CPU_NEVADA
1626 select CPU_SUPPORTS_32BIT_KERNEL
1627 select CPU_SUPPORTS_64BIT_KERNEL
1628 select CPU_SUPPORTS_HUGEPAGES
1630 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1634 depends on SYS_HAS_CPU_R8000
1635 select CPU_HAS_PREFETCH
1636 select CPU_SUPPORTS_64BIT_KERNEL
1638 MIPS Technologies R8000 processors. Note these processors are
1639 uncommon and the support for them is incomplete.
1643 depends on SYS_HAS_CPU_R10000
1644 select CPU_HAS_PREFETCH
1645 select CPU_SUPPORTS_32BIT_KERNEL
1646 select CPU_SUPPORTS_64BIT_KERNEL
1647 select CPU_SUPPORTS_HIGHMEM
1648 select CPU_SUPPORTS_HUGEPAGES
1650 MIPS Technologies R10000-series processors.
1654 depends on SYS_HAS_CPU_RM7000
1655 select CPU_HAS_PREFETCH
1656 select CPU_SUPPORTS_32BIT_KERNEL
1657 select CPU_SUPPORTS_64BIT_KERNEL
1658 select CPU_SUPPORTS_HIGHMEM
1659 select CPU_SUPPORTS_HUGEPAGES
1663 depends on SYS_HAS_CPU_SB1
1664 select CPU_SUPPORTS_32BIT_KERNEL
1665 select CPU_SUPPORTS_64BIT_KERNEL
1666 select CPU_SUPPORTS_HIGHMEM
1667 select CPU_SUPPORTS_HUGEPAGES
1668 select WEAK_ORDERING
1670 config CPU_CAVIUM_OCTEON
1671 bool "Cavium Octeon processor"
1672 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1673 select CPU_HAS_PREFETCH
1674 select CPU_SUPPORTS_64BIT_KERNEL
1675 select WEAK_ORDERING
1676 select CPU_SUPPORTS_HIGHMEM
1677 select CPU_SUPPORTS_HUGEPAGES
1678 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1679 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1680 select MIPS_L1_CACHE_SHIFT_7
1683 The Cavium Octeon processor is a highly integrated chip containing
1684 many ethernet hardware widgets for networking tasks. The processor
1685 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1686 Full details can be found at http://www.caviumnetworks.com.
1689 bool "Broadcom BMIPS"
1690 depends on SYS_HAS_CPU_BMIPS
1692 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1693 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1694 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1695 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1696 select CPU_SUPPORTS_32BIT_KERNEL
1697 select DMA_NONCOHERENT
1699 select SWAP_IO_SPACE
1700 select WEAK_ORDERING
1701 select CPU_SUPPORTS_HIGHMEM
1702 select CPU_HAS_PREFETCH
1703 select CPU_SUPPORTS_CPUFREQ
1704 select MIPS_EXTERNAL_TIMER
1706 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1709 bool "Netlogic XLR SoC"
1710 depends on SYS_HAS_CPU_XLR
1711 select CPU_SUPPORTS_32BIT_KERNEL
1712 select CPU_SUPPORTS_64BIT_KERNEL
1713 select CPU_SUPPORTS_HIGHMEM
1714 select CPU_SUPPORTS_HUGEPAGES
1715 select WEAK_ORDERING
1716 select WEAK_REORDERING_BEYOND_LLSC
1718 Netlogic Microsystems XLR/XLS processors.
1721 bool "Netlogic XLP SoC"
1722 depends on SYS_HAS_CPU_XLP
1723 select CPU_SUPPORTS_32BIT_KERNEL
1724 select CPU_SUPPORTS_64BIT_KERNEL
1725 select CPU_SUPPORTS_HIGHMEM
1726 select WEAK_ORDERING
1727 select WEAK_REORDERING_BEYOND_LLSC
1728 select CPU_HAS_PREFETCH
1730 select CPU_SUPPORTS_HUGEPAGES
1731 select MIPS_ASID_BITS_VARIABLE
1733 Netlogic Microsystems XLP processors.
1736 config CPU_MIPS32_3_5_FEATURES
1737 bool "MIPS32 Release 3.5 Features"
1738 depends on SYS_HAS_CPU_MIPS32_R3_5
1739 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1741 Choose this option to build a kernel for release 2 or later of the
1742 MIPS32 architecture including features from the 3.5 release such as
1743 support for Enhanced Virtual Addressing (EVA).
1745 config CPU_MIPS32_3_5_EVA
1746 bool "Enhanced Virtual Addressing (EVA)"
1747 depends on CPU_MIPS32_3_5_FEATURES
1751 Choose this option if you want to enable the Enhanced Virtual
1752 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1753 One of its primary benefits is an increase in the maximum size
1754 of lowmem (up to 3GB). If unsure, say 'N' here.
1756 config CPU_MIPS32_R5_FEATURES
1757 bool "MIPS32 Release 5 Features"
1758 depends on SYS_HAS_CPU_MIPS32_R5
1759 depends on CPU_MIPS32_R2
1761 Choose this option to build a kernel for release 2 or later of the
1762 MIPS32 architecture including features from release 5 such as
1763 support for Extended Physical Addressing (XPA).
1765 config CPU_MIPS32_R5_XPA
1766 bool "Extended Physical Addressing (XPA)"
1767 depends on CPU_MIPS32_R5_FEATURES
1769 depends on !PAGE_SIZE_4KB
1770 depends on SYS_SUPPORTS_HIGHMEM
1773 select PHYS_ADDR_T_64BIT
1776 Choose this option if you want to enable the Extended Physical
1777 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1778 benefit is to increase physical addressing equal to or greater
1779 than 40 bits. Note that this has the side effect of turning on
1780 64-bit addressing which in turn makes the PTEs 64-bit in size.
1781 If unsure, say 'N' here.
1784 config CPU_NOP_WORKAROUNDS
1787 config CPU_JUMP_WORKAROUNDS
1790 config CPU_LOONGSON2F_WORKAROUNDS
1791 bool "Loongson 2F Workarounds"
1793 select CPU_NOP_WORKAROUNDS
1794 select CPU_JUMP_WORKAROUNDS
1796 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1797 require workarounds. Without workarounds the system may hang
1798 unexpectedly. For more information please refer to the gas
1799 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1801 Loongson 2F03 and later have fixed these issues and no workarounds
1802 are needed. The workarounds have no significant side effect on them
1803 but may decrease the performance of the system so this option should
1804 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1807 If unsure, please say Y.
1808 endif # CPU_LOONGSON2F
1810 config SYS_SUPPORTS_ZBOOT
1812 select HAVE_KERNEL_GZIP
1813 select HAVE_KERNEL_BZIP2
1814 select HAVE_KERNEL_LZ4
1815 select HAVE_KERNEL_LZMA
1816 select HAVE_KERNEL_LZO
1817 select HAVE_KERNEL_XZ
1819 config SYS_SUPPORTS_ZBOOT_UART16550
1821 select SYS_SUPPORTS_ZBOOT
1823 config SYS_SUPPORTS_ZBOOT_UART_PROM
1825 select SYS_SUPPORTS_ZBOOT
1827 config CPU_LOONGSON2
1829 select CPU_SUPPORTS_32BIT_KERNEL
1830 select CPU_SUPPORTS_64BIT_KERNEL
1831 select CPU_SUPPORTS_HIGHMEM
1832 select CPU_SUPPORTS_HUGEPAGES
1833 select ARCH_HAS_PHYS_TO_DMA
1835 config CPU_LOONGSON1
1839 select CPU_HAS_PREFETCH
1840 select CPU_SUPPORTS_32BIT_KERNEL
1841 select CPU_SUPPORTS_HIGHMEM
1842 select CPU_SUPPORTS_CPUFREQ
1844 config CPU_BMIPS32_3300
1845 select SMP_UP if SMP
1848 config CPU_BMIPS4350
1850 select SYS_SUPPORTS_SMP
1851 select SYS_SUPPORTS_HOTPLUG_CPU
1853 config CPU_BMIPS4380
1855 select MIPS_L1_CACHE_SHIFT_6
1856 select SYS_SUPPORTS_SMP
1857 select SYS_SUPPORTS_HOTPLUG_CPU
1860 config CPU_BMIPS5000
1862 select MIPS_CPU_SCACHE
1863 select MIPS_L1_CACHE_SHIFT_7
1864 select SYS_SUPPORTS_SMP
1865 select SYS_SUPPORTS_HOTPLUG_CPU
1868 config SYS_HAS_CPU_LOONGSON3
1870 select CPU_SUPPORTS_CPUFREQ
1873 config SYS_HAS_CPU_LOONGSON2E
1876 config SYS_HAS_CPU_LOONGSON2F
1878 select CPU_SUPPORTS_CPUFREQ
1879 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1880 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1882 config SYS_HAS_CPU_LOONGSON1B
1885 config SYS_HAS_CPU_LOONGSON1C
1888 config SYS_HAS_CPU_MIPS32_R1
1891 config SYS_HAS_CPU_MIPS32_R2
1894 config SYS_HAS_CPU_MIPS32_R3_5
1897 config SYS_HAS_CPU_MIPS32_R5
1900 config SYS_HAS_CPU_MIPS32_R6
1903 config SYS_HAS_CPU_MIPS64_R1
1906 config SYS_HAS_CPU_MIPS64_R2
1909 config SYS_HAS_CPU_MIPS64_R6
1912 config SYS_HAS_CPU_R3000
1915 config SYS_HAS_CPU_TX39XX
1918 config SYS_HAS_CPU_VR41XX
1921 config SYS_HAS_CPU_R4300
1924 config SYS_HAS_CPU_R4X00
1927 config SYS_HAS_CPU_TX49XX
1930 config SYS_HAS_CPU_R5000
1933 config SYS_HAS_CPU_R5432
1936 config SYS_HAS_CPU_R5500
1939 config SYS_HAS_CPU_NEVADA
1942 config SYS_HAS_CPU_R8000
1945 config SYS_HAS_CPU_R10000
1948 config SYS_HAS_CPU_RM7000
1951 config SYS_HAS_CPU_SB1
1954 config SYS_HAS_CPU_CAVIUM_OCTEON
1957 config SYS_HAS_CPU_BMIPS
1960 config SYS_HAS_CPU_BMIPS32_3300
1962 select SYS_HAS_CPU_BMIPS
1964 config SYS_HAS_CPU_BMIPS4350
1966 select SYS_HAS_CPU_BMIPS
1968 config SYS_HAS_CPU_BMIPS4380
1970 select SYS_HAS_CPU_BMIPS
1972 config SYS_HAS_CPU_BMIPS5000
1974 select SYS_HAS_CPU_BMIPS
1976 config SYS_HAS_CPU_XLR
1979 config SYS_HAS_CPU_XLP
1983 # CPU may reorder R->R, R->W, W->R, W->W
1984 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1986 config WEAK_ORDERING
1990 # CPU may reorder reads and writes beyond LL/SC
1991 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1993 config WEAK_REORDERING_BEYOND_LLSC
1998 # These two indicate any level of the MIPS32 and MIPS64 architecture
2002 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2006 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2009 # These two indicate the revision of the architecture, either Release 1 or Release 2
2013 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2017 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2023 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2025 select HAVE_ARCH_BITREVERSE
2026 select MIPS_ASID_BITS_VARIABLE
2027 select MIPS_CRC_SUPPORT
2036 config SYS_SUPPORTS_32BIT_KERNEL
2038 config SYS_SUPPORTS_64BIT_KERNEL
2040 config CPU_SUPPORTS_32BIT_KERNEL
2042 config CPU_SUPPORTS_64BIT_KERNEL
2044 config CPU_SUPPORTS_CPUFREQ
2046 config CPU_SUPPORTS_ADDRWINCFG
2048 config CPU_SUPPORTS_HUGEPAGES
2050 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2052 config MIPS_PGD_C0_CONTEXT
2054 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2057 # Set to y for ptrace access to watch registers.
2059 config HARDWARE_WATCHPOINTS
2061 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2066 prompt "Kernel code model"
2068 You should only select this option if you have a workload that
2069 actually benefits from 64-bit processing or if your machine has
2070 large memory. You will only be presented a single option in this
2071 menu if your system does not support both 32-bit and 64-bit kernels.
2074 bool "32-bit kernel"
2075 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2078 Select this option if you want to build a 32-bit kernel.
2081 bool "64-bit kernel"
2082 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2084 Select this option if you want to build a 64-bit kernel.
2089 bool "KVM Guest Kernel"
2090 depends on BROKEN_ON_SMP
2092 Select this option if building a guest kernel for KVM (Trap & Emulate)
2095 config KVM_GUEST_TIMER_FREQ
2096 int "Count/Compare Timer Frequency (MHz)"
2097 depends on KVM_GUEST
2100 Set this to non-zero if building a guest kernel for KVM to skip RTC
2101 emulation when determining guest CPU Frequency. Instead, the guest's
2102 timer frequency is specified directly.
2104 config MIPS_VA_BITS_48
2105 bool "48 bits virtual memory"
2108 Support a maximum at least 48 bits of application virtual
2109 memory. Default is 40 bits or less, depending on the CPU.
2110 For page sizes 16k and above, this option results in a small
2111 memory overhead for page tables. For 4k page size, a fourth
2112 level of page tables is added which imposes both a memory
2113 overhead as well as slower TLB fault handling.
2118 prompt "Kernel page size"
2119 default PAGE_SIZE_4KB
2121 config PAGE_SIZE_4KB
2123 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2125 This option select the standard 4kB Linux page size. On some
2126 R3000-family processors this is the only available page size. Using
2127 4kB page size will minimize memory consumption and is therefore
2128 recommended for low memory systems.
2130 config PAGE_SIZE_8KB
2132 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2133 depends on !MIPS_VA_BITS_48
2135 Using 8kB page size will result in higher performance kernel at
2136 the price of higher memory consumption. This option is available
2137 only on R8000 and cnMIPS processors. Note that you will need a
2138 suitable Linux distribution to support this.
2140 config PAGE_SIZE_16KB
2142 depends on !CPU_R3000 && !CPU_TX39XX
2144 Using 16kB page size will result in higher performance kernel at
2145 the price of higher memory consumption. This option is available on
2146 all non-R3000 family processors. Note that you will need a suitable
2147 Linux distribution to support this.
2149 config PAGE_SIZE_32KB
2151 depends on CPU_CAVIUM_OCTEON
2152 depends on !MIPS_VA_BITS_48
2154 Using 32kB page size will result in higher performance kernel at
2155 the price of higher memory consumption. This option is available
2156 only on cnMIPS cores. Note that you will need a suitable Linux
2157 distribution to support this.
2159 config PAGE_SIZE_64KB
2161 depends on !CPU_R3000 && !CPU_TX39XX
2163 Using 64kB page size will result in higher performance kernel at
2164 the price of higher memory consumption. This option is available on
2165 all non-R3000 family processor. Not that at the time of this
2166 writing this option is still high experimental.
2170 config FORCE_MAX_ZONEORDER
2171 int "Maximum zone order"
2172 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2173 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2174 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2175 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2176 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2177 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2181 The kernel memory allocator divides physically contiguous memory
2182 blocks into "zones", where each zone is a power of two number of
2183 pages. This option selects the largest power of two that the kernel
2184 keeps in the memory allocator. If you need to allocate very large
2185 blocks of physically contiguous memory, then you may need to
2186 increase this value.
2188 This config option is actually maximum order plus one. For example,
2189 a value of 11 means that the largest free memory block is 2^10 pages.
2191 The page size is not necessarily 4KB. Keep this in mind
2192 when choosing a value for this option.
2197 config IP22_CPU_SCACHE
2202 # Support for a MIPS32 / MIPS64 style S-caches
2204 config MIPS_CPU_SCACHE
2208 config R5000_CPU_SCACHE
2212 config RM7000_CPU_SCACHE
2216 config SIBYTE_DMA_PAGEOPS
2217 bool "Use DMA to clear/copy pages"
2220 Instead of using the CPU to zero and copy pages, use a Data Mover
2221 channel. These DMA channels are otherwise unused by the standard
2222 SiByte Linux port. Seems to give a small performance benefit.
2224 config CPU_HAS_PREFETCH
2227 config CPU_GENERIC_DUMP_TLB
2229 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
2233 default y if !(CPU_R3000 || CPU_TX39XX)
2235 config CPU_R4K_CACHE_TLB
2237 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2240 bool "MIPS MT SMP support (1 TC on each available VPE)"
2242 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2243 select CPU_MIPSR2_IRQ_VI
2244 select CPU_MIPSR2_IRQ_EI
2249 select SYS_SUPPORTS_SMP
2250 select SYS_SUPPORTS_SCHED_SMT
2251 select MIPS_PERF_SHARED_TC_COUNTERS
2253 This is a kernel model which is known as SMVP. This is supported
2254 on cores with the MT ASE and uses the available VPEs to implement
2255 virtual processors which supports SMP. This is equivalent to the
2256 Intel Hyperthreading feature. For further information go to
2257 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2263 bool "SMT (multithreading) scheduler support"
2264 depends on SYS_SUPPORTS_SCHED_SMT
2267 SMT scheduler support improves the CPU scheduler's decision making
2268 when dealing with MIPS MT enabled cores at a cost of slightly
2269 increased overhead in some places. If unsure say N here.
2271 config SYS_SUPPORTS_SCHED_SMT
2274 config SYS_SUPPORTS_MULTITHREADING
2277 config MIPS_MT_FPAFF
2278 bool "Dynamic FPU affinity for FP-intensive threads"
2280 depends on MIPS_MT_SMP
2282 config MIPSR2_TO_R6_EMULATOR
2283 bool "MIPS R2-to-R6 emulator"
2284 depends on CPU_MIPSR6
2287 Choose this option if you want to run non-R6 MIPS userland code.
2288 Even if you say 'Y' here, the emulator will still be disabled by
2289 default. You can enable it using the 'mipsr2emu' kernel option.
2290 The only reason this is a build-time option is to save ~14K from the
2293 config SYS_SUPPORTS_VPE_LOADER
2295 depends on SYS_SUPPORTS_MULTITHREADING
2297 Indicates that the platform supports the VPE loader, and provides
2300 config MIPS_VPE_LOADER
2301 bool "VPE loader support."
2302 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2303 select CPU_MIPSR2_IRQ_VI
2304 select CPU_MIPSR2_IRQ_EI
2307 Includes a loader for loading an elf relocatable object
2308 onto another VPE and running it.
2310 config MIPS_VPE_LOADER_CMP
2313 depends on MIPS_VPE_LOADER && MIPS_CMP
2315 config MIPS_VPE_LOADER_MT
2318 depends on MIPS_VPE_LOADER && !MIPS_CMP
2320 config MIPS_VPE_LOADER_TOM
2321 bool "Load VPE program into memory hidden from linux"
2322 depends on MIPS_VPE_LOADER
2325 The loader can use memory that is present but has been hidden from
2326 Linux using the kernel command line option "mem=xxMB". It's up to
2327 you to ensure the amount you put in the option and the space your
2328 program requires is less or equal to the amount physically present.
2330 config MIPS_VPE_APSP_API
2331 bool "Enable support for AP/SP API (RTLX)"
2332 depends on MIPS_VPE_LOADER
2334 config MIPS_VPE_APSP_API_CMP
2337 depends on MIPS_VPE_APSP_API && MIPS_CMP
2339 config MIPS_VPE_APSP_API_MT
2342 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2345 bool "MIPS CMP framework support (DEPRECATED)"
2346 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2349 select SYS_SUPPORTS_SMP
2350 select WEAK_ORDERING
2353 Select this if you are using a bootloader which implements the "CMP
2354 framework" protocol (ie. YAMON) and want your kernel to make use of
2355 its ability to start secondary CPUs.
2357 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2361 bool "MIPS Coherent Processing System support"
2362 depends on SYS_SUPPORTS_MIPS_CPS
2364 select MIPS_CPS_PM if HOTPLUG_CPU
2366 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2367 select SYS_SUPPORTS_HOTPLUG_CPU
2368 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2369 select SYS_SUPPORTS_SMP
2370 select WEAK_ORDERING
2372 Select this if you wish to run an SMP kernel across multiple cores
2373 within a MIPS Coherent Processing System. When this option is
2374 enabled the kernel will probe for other cores and boot them with
2375 no external assistance. It is safe to enable this when hardware
2376 support is unavailable.
2389 config SB1_PASS_2_WORKAROUNDS
2391 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2394 config SB1_PASS_2_1_WORKAROUNDS
2396 depends on CPU_SB1 && CPU_SB1_PASS_2
2401 prompt "SmartMIPS or microMIPS ASE support"
2403 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2406 Select this if you want neither microMIPS nor SmartMIPS support
2408 config CPU_HAS_SMARTMIPS
2409 depends on SYS_SUPPORTS_SMARTMIPS
2412 SmartMIPS is a extension of the MIPS32 architecture aimed at
2413 increased security at both hardware and software level for
2414 smartcards. Enabling this option will allow proper use of the
2415 SmartMIPS instructions by Linux applications. However a kernel with
2416 this option will not work on a MIPS core without SmartMIPS core. If
2417 you don't know you probably don't have SmartMIPS and should say N
2420 config CPU_MICROMIPS
2421 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2424 When this option is enabled the kernel will be built using the
2430 bool "Support for the MIPS SIMD Architecture"
2431 depends on CPU_SUPPORTS_MSA
2432 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2434 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2435 and a set of SIMD instructions to operate on them. When this option
2436 is enabled the kernel will support allocating & switching MSA
2437 vector register contexts. If you know that your kernel will only be
2438 running on CPUs which do not support MSA or that your userland will
2439 not be making use of it then you may wish to say N here to reduce
2440 the size & complexity of your kernel.
2454 # Vectored interrupt mode is an R2 feature
2456 config CPU_MIPSR2_IRQ_VI
2460 # Extended interrupt mode is an R2 feature
2462 config CPU_MIPSR2_IRQ_EI
2467 depends on !CPU_R3000
2473 config CPU_DADDI_WORKAROUNDS
2476 config CPU_R4000_WORKAROUNDS
2478 select CPU_R4400_WORKAROUNDS
2480 config CPU_R4400_WORKAROUNDS
2483 config MIPS_ASID_SHIFT
2485 default 6 if CPU_R3000 || CPU_TX39XX
2486 default 4 if CPU_R8000
2489 config MIPS_ASID_BITS
2491 default 0 if MIPS_ASID_BITS_VARIABLE
2492 default 6 if CPU_R3000 || CPU_TX39XX
2495 config MIPS_ASID_BITS_VARIABLE
2498 config MIPS_CRC_SUPPORT
2502 # - Highmem only makes sense for the 32-bit kernel.
2503 # - The current highmem code will only work properly on physically indexed
2504 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2505 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2506 # moment we protect the user and offer the highmem option only on machines
2507 # where it's known to be safe. This will not offer highmem on a few systems
2508 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2509 # indexed CPUs but we're playing safe.
2510 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2511 # know they might have memory configurations that could make use of highmem
2515 bool "High Memory Support"
2516 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2518 config CPU_SUPPORTS_HIGHMEM
2521 config SYS_SUPPORTS_HIGHMEM
2524 config SYS_SUPPORTS_SMARTMIPS
2527 config SYS_SUPPORTS_MICROMIPS
2530 config SYS_SUPPORTS_MIPS16
2533 This option must be set if a kernel might be executed on a MIPS16-
2534 enabled CPU even if MIPS16 is not actually being used. In other
2535 words, it makes the kernel MIPS16-tolerant.
2537 config CPU_SUPPORTS_MSA
2540 config ARCH_FLATMEM_ENABLE
2542 depends on !NUMA && !CPU_LOONGSON2
2544 config ARCH_DISCONTIGMEM_ENABLE
2546 default y if SGI_IP27
2548 Say Y to support efficient handling of discontiguous physical memory,
2549 for architectures which are either NUMA (Non-Uniform Memory Access)
2550 or have huge holes in the physical address space for other reasons.
2551 See <file:Documentation/vm/numa.rst> for more.
2553 config ARCH_SPARSEMEM_ENABLE
2555 select SPARSEMEM_STATIC
2559 depends on SYS_SUPPORTS_NUMA
2561 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2562 Access). This option improves performance on systems with more
2563 than two nodes; on two node systems it is generally better to
2564 leave it disabled; on single node systems disable this option
2567 config SYS_SUPPORTS_NUMA
2571 bool "Relocatable kernel"
2572 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2574 This builds a kernel image that retains relocation information
2575 so it can be loaded someplace besides the default 1MB.
2576 The relocations make the kernel binary about 15% larger,
2577 but are discarded at runtime
2579 config RELOCATION_TABLE_SIZE
2580 hex "Relocation table size"
2581 depends on RELOCATABLE
2582 range 0x0 0x01000000
2583 default "0x00100000"
2585 A table of relocation data will be appended to the kernel binary
2586 and parsed at boot to fix up the relocated kernel.
2588 This option allows the amount of space reserved for the table to be
2589 adjusted, although the default of 1Mb should be ok in most cases.
2591 The build will fail and a valid size suggested if this is too small.
2593 If unsure, leave at the default value.
2595 config RANDOMIZE_BASE
2596 bool "Randomize the address of the kernel image"
2597 depends on RELOCATABLE
2599 Randomizes the physical and virtual address at which the
2600 kernel image is loaded, as a security feature that
2601 deters exploit attempts relying on knowledge of the location
2602 of kernel internals.
2604 Entropy is generated using any coprocessor 0 registers available.
2606 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2610 config RANDOMIZE_BASE_MAX_OFFSET
2611 hex "Maximum kASLR offset" if EXPERT
2612 depends on RANDOMIZE_BASE
2613 range 0x0 0x40000000 if EVA || 64BIT
2614 range 0x0 0x08000000
2615 default "0x01000000"
2617 When kASLR is active, this provides the maximum offset that will
2618 be applied to the kernel image. It should be set according to the
2619 amount of physical RAM available in the target system minus
2620 PHYSICAL_START and must be a power of 2.
2622 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2623 EVA or 64-bit. The default is 16Mb.
2628 depends on NEED_MULTIPLE_NODES
2630 config HW_PERF_EVENTS
2631 bool "Enable hardware performance counter support for perf events"
2632 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2635 Enable hardware performance counter support for perf events. If
2636 disabled, perf events will use software events only.
2641 bool "Multi-Processing support"
2642 depends on SYS_SUPPORTS_SMP
2644 This enables support for systems with more than one CPU. If you have
2645 a system with only one CPU, say N. If you have a system with more
2646 than one CPU, say Y.
2648 If you say N here, the kernel will run on uni- and multiprocessor
2649 machines, but will use only one CPU of a multiprocessor machine. If
2650 you say Y here, the kernel will run on many, but not all,
2651 uniprocessor machines. On a uniprocessor machine, the kernel
2652 will run faster if you say N here.
2654 People using multiprocessor machines who say Y here should also say
2655 Y to "Enhanced Real Time Clock Support", below.
2657 See also the SMP-HOWTO available at
2658 <http://www.tldp.org/docs.html#howto>.
2660 If you don't know what to do here, say N.
2663 bool "Support for hot-pluggable CPUs"
2664 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2666 Say Y here to allow turning CPUs off and on. CPUs can be
2667 controlled through /sys/devices/system/cpu.
2668 (Note: power management support will enable this option
2669 automatically on SMP systems. )
2670 Say N if you want to disable CPU hotplug.
2675 config SYS_SUPPORTS_MIPS_CMP
2678 config SYS_SUPPORTS_MIPS_CPS
2681 config SYS_SUPPORTS_SMP
2684 config NR_CPUS_DEFAULT_4
2687 config NR_CPUS_DEFAULT_8
2690 config NR_CPUS_DEFAULT_16
2693 config NR_CPUS_DEFAULT_32
2696 config NR_CPUS_DEFAULT_64
2700 int "Maximum number of CPUs (2-256)"
2703 default "4" if NR_CPUS_DEFAULT_4
2704 default "8" if NR_CPUS_DEFAULT_8
2705 default "16" if NR_CPUS_DEFAULT_16
2706 default "32" if NR_CPUS_DEFAULT_32
2707 default "64" if NR_CPUS_DEFAULT_64
2709 This allows you to specify the maximum number of CPUs which this
2710 kernel will support. The maximum supported value is 32 for 32-bit
2711 kernel and 64 for 64-bit kernels; the minimum value which makes
2712 sense is 1 for Qemu (useful only for kernel debugging purposes)
2713 and 2 for all others.
2715 This is purely to save memory - each supported CPU adds
2716 approximately eight kilobytes to the kernel image. For best
2717 performance should round up your number of processors to the next
2720 config MIPS_PERF_SHARED_TC_COUNTERS
2723 config MIPS_NR_CPU_NR_MAP_1024
2726 config MIPS_NR_CPU_NR_MAP
2729 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2730 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2733 # Timer Interrupt Frequency Configuration
2737 prompt "Timer frequency"
2740 Allows the configuration of the timer frequency.
2743 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2746 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2749 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2752 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2755 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2758 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2761 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2764 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2768 config SYS_SUPPORTS_24HZ
2771 config SYS_SUPPORTS_48HZ
2774 config SYS_SUPPORTS_100HZ
2777 config SYS_SUPPORTS_128HZ
2780 config SYS_SUPPORTS_250HZ
2783 config SYS_SUPPORTS_256HZ
2786 config SYS_SUPPORTS_1000HZ
2789 config SYS_SUPPORTS_1024HZ
2792 config SYS_SUPPORTS_ARBIT_HZ
2794 default y if !SYS_SUPPORTS_24HZ && \
2795 !SYS_SUPPORTS_48HZ && \
2796 !SYS_SUPPORTS_100HZ && \
2797 !SYS_SUPPORTS_128HZ && \
2798 !SYS_SUPPORTS_250HZ && \
2799 !SYS_SUPPORTS_256HZ && \
2800 !SYS_SUPPORTS_1000HZ && \
2801 !SYS_SUPPORTS_1024HZ
2807 default 100 if HZ_100
2808 default 128 if HZ_128
2809 default 250 if HZ_250
2810 default 256 if HZ_256
2811 default 1000 if HZ_1000
2812 default 1024 if HZ_1024
2815 def_bool HIGH_RES_TIMERS
2817 source "kernel/Kconfig.preempt"
2820 bool "Kexec system call"
2823 kexec is a system call that implements the ability to shutdown your
2824 current kernel, and to start another kernel. It is like a reboot
2825 but it is independent of the system firmware. And like a reboot
2826 you can start any kernel with it, not just Linux.
2828 The name comes from the similarity to the exec system call.
2830 It is an ongoing process to be certain the hardware in a machine
2831 is properly shutdown, so do not be surprised if this code does not
2832 initially work for you. As of this writing the exact hardware
2833 interface is strongly in flux, so no good recommendation can be
2837 bool "Kernel crash dumps"
2839 Generate crash dump after being started by kexec.
2840 This should be normally only set in special crash dump kernels
2841 which are loaded in the main kernel with kexec-tools into
2842 a specially reserved region and then later executed after
2843 a crash by kdump/kexec. The crash dump kernel must be compiled
2844 to a memory address not used by the main kernel or firmware using
2847 config PHYSICAL_START
2848 hex "Physical address where the kernel is loaded"
2849 default "0xffffffff84000000"
2850 depends on CRASH_DUMP
2852 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2853 If you plan to use kernel for capturing the crash dump change
2854 this value to start of the reserved region (the "X" value as
2855 specified in the "crashkernel=YM@XM" command line boot parameter
2856 passed to the panic-ed kernel).
2859 bool "Enable seccomp to safely compute untrusted bytecode"
2863 This kernel feature is useful for number crunching applications
2864 that may need to compute untrusted bytecode during their
2865 execution. By using pipes or other transports made available to
2866 the process as file descriptors supporting the read/write
2867 syscalls, it's possible to isolate those applications in
2868 their own address space using seccomp. Once seccomp is
2869 enabled via /proc/<pid>/seccomp, it cannot be disabled
2870 and the task is only allowed to execute a few safe syscalls
2871 defined by each seccomp mode.
2873 If unsure, say Y. Only embedded should say N here.
2875 config MIPS_O32_FP64_SUPPORT
2876 bool "Support for O32 binaries using 64-bit FP"
2877 depends on 32BIT || MIPS32_O32
2879 When this is enabled, the kernel will support use of 64-bit floating
2880 point registers with binaries using the O32 ABI along with the
2881 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2882 32-bit MIPS systems this support is at the cost of increasing the
2883 size and complexity of the compiled FPU emulator. Thus if you are
2884 running a MIPS32 system and know that none of your userland binaries
2885 will require 64-bit floating point, you may wish to reduce the size
2886 of your kernel & potentially improve FP emulation performance by
2889 Although binutils currently supports use of this flag the details
2890 concerning its effect upon the O32 ABI in userland are still being
2891 worked on. In order to avoid userland becoming dependant upon current
2892 behaviour before the details have been finalised, this option should
2893 be considered experimental and only enabled by those working upon
2901 select OF_EARLY_FLATTREE
2908 prompt "Kernel appended dtb support" if USE_OF
2909 default MIPS_NO_APPENDED_DTB
2911 config MIPS_NO_APPENDED_DTB
2914 Do not enable appended dtb support.
2916 config MIPS_ELF_APPENDED_DTB
2919 With this option, the boot code will look for a device tree binary
2920 DTB) included in the vmlinux ELF section .appended_dtb. By default
2921 it is empty and the DTB can be appended using binutils command
2924 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2926 This is meant as a backward compatiblity convenience for those
2927 systems with a bootloader that can't be upgraded to accommodate
2928 the documented boot protocol using a device tree.
2930 config MIPS_RAW_APPENDED_DTB
2931 bool "vmlinux.bin or vmlinuz.bin"
2933 With this option, the boot code will look for a device tree binary
2934 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2935 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2937 This is meant as a backward compatibility convenience for those
2938 systems with a bootloader that can't be upgraded to accommodate
2939 the documented boot protocol using a device tree.
2941 Beware that there is very little in terms of protection against
2942 this option being confused by leftover garbage in memory that might
2943 look like a DTB header after a reboot if no actual DTB is appended
2944 to vmlinux.bin. Do not leave this option active in a production kernel
2945 if you don't intend to always append a DTB.
2949 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2950 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2953 default MIPS_CMDLINE_FROM_BOOTLOADER
2955 config MIPS_CMDLINE_FROM_DTB
2957 bool "Dtb kernel arguments if available"
2959 config MIPS_CMDLINE_DTB_EXTEND
2961 bool "Extend dtb kernel arguments with bootloader arguments"
2963 config MIPS_CMDLINE_FROM_BOOTLOADER
2964 bool "Bootloader kernel arguments if available"
2966 config MIPS_CMDLINE_BUILTIN_EXTEND
2967 depends on CMDLINE_BOOL
2968 bool "Extend builtin kernel arguments with bootloader arguments"
2973 config LOCKDEP_SUPPORT
2977 config STACKTRACE_SUPPORT
2981 config HAVE_LATENCYTOP_SUPPORT
2985 config PGTABLE_LEVELS
2987 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
2988 default 3 if 64BIT && !PAGE_SIZE_64KB
2991 config MIPS_AUTO_PFN_OFFSET
2994 source "init/Kconfig"
2996 source "kernel/Kconfig.freezer"
2998 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3006 bool "Support for PCI controller"
3007 depends on HW_HAS_PCI
3010 Find out whether you have a PCI motherboard. PCI is the name of a
3011 bus system, i.e. the way the CPU talks to the other stuff inside
3012 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
3016 bool "Support for HT-linked PCI"
3018 depends on CPU_LOONGSON3
3022 Loongson family machines use Hyper-Transport bus for inter-core
3023 connection and device connection. The PCI bus is a subordinate
3024 linked at HT. Choose Y for Loongson-3 based machines.
3029 config PCI_DOMAINS_GENERIC
3032 config PCI_DRIVERS_GENERIC
3033 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3036 config PCI_DRIVERS_LEGACY
3037 def_bool !PCI_DRIVERS_GENERIC
3038 select NO_GENERIC_PCI_IOPORT_MAP
3040 source "drivers/pci/Kconfig"
3043 # ISA support is now enabled via select. Too many systems still have the one
3044 # or other ISA chip on the board that users don't know about so don't expect
3045 # users to choose the right thing ...
3052 depends on HW_HAS_EISA
3054 select GENERIC_ISA_DMA
3056 The Extended Industry Standard Architecture (EISA) bus was
3057 developed as an open alternative to the IBM MicroChannel bus.
3059 The EISA bus provided some of the features of the IBM MicroChannel
3060 bus while maintaining backward compatibility with cards made for
3061 the older ISA bus. The EISA bus saw limited use between 1988 and
3062 1995 when it was made obsolete by the PCI bus.
3064 Say Y here if you are building a kernel for an EISA-based machine.
3068 source "drivers/eisa/Kconfig"
3071 bool "TURBOchannel support"
3072 depends on MACH_DECSTATION
3074 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3075 processors. TURBOchannel programming specifications are available
3077 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3079 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3080 Linux driver support status is documented at:
3081 <http://www.linux-mips.org/wiki/DECstation>
3087 config ARCH_MMAP_RND_BITS_MIN
3091 config ARCH_MMAP_RND_BITS_MAX
3095 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3098 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3105 select MIPS_EXTERNAL_TIMER
3113 source "drivers/pcmcia/Kconfig"
3120 tristate "RapidIO support"
3121 depends on HAS_RAPIDIO || PCI
3123 If you say Y here, the kernel will include drivers and
3124 infrastructure code to support RapidIO interconnect devices.
3126 source "drivers/rapidio/Kconfig"
3130 menu "Executable file formats"
3132 source "fs/Kconfig.binfmt"
3137 config MIPS32_COMPAT
3143 config SYSVIPC_COMPAT
3147 bool "Kernel support for o32 binaries"
3149 select ARCH_WANT_OLD_COMPAT_IPC
3151 select MIPS32_COMPAT
3152 select SYSVIPC_COMPAT if SYSVIPC
3154 Select this option if you want to run o32 binaries. These are pure
3155 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3156 existing binaries are in this format.
3161 bool "Kernel support for n32 binaries"
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
3181 menu "Power management options"
3183 config ARCH_HIBERNATION_POSSIBLE
3185 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3187 config ARCH_SUSPEND_POSSIBLE
3189 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3191 source "kernel/power/Kconfig"
3195 config MIPS_EXTERNAL_TIMER
3198 menu "CPU Power Management"
3200 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3201 source "drivers/cpufreq/Kconfig"
3204 source "drivers/cpuidle/Kconfig"
3208 source "net/Kconfig"
3210 source "drivers/Kconfig"
3212 source "drivers/firmware/Kconfig"
3216 source "arch/mips/Kconfig.debug"
3218 source "security/Kconfig"
3220 source "crypto/Kconfig"
3222 source "lib/Kconfig"
3224 source "arch/mips/kvm/Kconfig"