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
25 select GENERIC_IRQ_PROBE
26 select GENERIC_IRQ_SHOW
27 select GENERIC_LIB_ASHLDI3
28 select GENERIC_LIB_ASHRDI3
29 select GENERIC_LIB_CMPDI2
30 select GENERIC_LIB_LSHRDI3
31 select GENERIC_LIB_UCMPDI2
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
83 menu "Machine selection"
90 bool "Generic board-agnostic MIPS kernel"
94 select CLKSRC_MIPS_GIC
96 select CPU_MIPSR2_IRQ_VI
97 select CPU_MIPSR2_IRQ_EI
99 select DMA_PERDEV_COHERENT
103 select MIPS_AUTO_PFN_OFFSET
104 select MIPS_CPU_SCACHE
106 select MIPS_L1_CACHE_SHIFT_7
107 select NO_EXCEPT_FILL
108 select PCI_DRIVERS_GENERIC
112 select SYS_HAS_CPU_MIPS32_R1
113 select SYS_HAS_CPU_MIPS32_R2
114 select SYS_HAS_CPU_MIPS32_R6
115 select SYS_HAS_CPU_MIPS64_R1
116 select SYS_HAS_CPU_MIPS64_R2
117 select SYS_HAS_CPU_MIPS64_R6
118 select SYS_SUPPORTS_32BIT_KERNEL
119 select SYS_SUPPORTS_64BIT_KERNEL
120 select SYS_SUPPORTS_BIG_ENDIAN
121 select SYS_SUPPORTS_HIGHMEM
122 select SYS_SUPPORTS_LITTLE_ENDIAN
123 select SYS_SUPPORTS_MICROMIPS
124 select SYS_SUPPORTS_MIPS_CPS
125 select SYS_SUPPORTS_MIPS16
126 select SYS_SUPPORTS_MULTITHREADING
127 select SYS_SUPPORTS_RELOCATABLE
128 select SYS_SUPPORTS_SMARTMIPS
129 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
130 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
131 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
132 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
133 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
134 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
138 Select this to build a kernel which aims to support multiple boards,
139 generally using a flattened device tree passed from the bootloader
140 using the boot protocol defined in the UHI (Unified Hosting
141 Interface) specification.
144 bool "Alchemy processor based machines"
145 select PHYS_ADDR_T_64BIT
149 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
150 select SYS_HAS_CPU_MIPS32_R1
151 select SYS_SUPPORTS_32BIT_KERNEL
152 select SYS_SUPPORTS_APM_EMULATION
154 select SYS_SUPPORTS_ZBOOT
158 bool "Texas Instruments AR7"
160 select DMA_NONCOHERENT
164 select NO_EXCEPT_FILL
166 select SYS_HAS_CPU_MIPS32_R1
167 select SYS_HAS_EARLY_PRINTK
168 select SYS_SUPPORTS_32BIT_KERNEL
169 select SYS_SUPPORTS_LITTLE_ENDIAN
170 select SYS_SUPPORTS_MIPS16
171 select SYS_SUPPORTS_ZBOOT_UART16550
176 Support for the Texas Instruments AR7 System-on-a-Chip
177 family: TNETD7100, 7200 and 7300.
180 bool "Atheros AR231x/AR531x SoC support"
183 select DMA_NONCOHERENT
186 select SYS_HAS_CPU_MIPS32_R1
187 select SYS_SUPPORTS_BIG_ENDIAN
188 select SYS_SUPPORTS_32BIT_KERNEL
189 select SYS_HAS_EARLY_PRINTK
191 Support for Atheros AR231x and Atheros AR531x based boards
194 bool "Atheros AR71XX/AR724X/AR913X based boards"
195 select ARCH_HAS_RESET_CONTROLLER
199 select DMA_NONCOHERENT
207 select SYS_HAS_CPU_MIPS32_R2
208 select SYS_HAS_EARLY_PRINTK
209 select SYS_SUPPORTS_32BIT_KERNEL
210 select SYS_SUPPORTS_BIG_ENDIAN
211 select SYS_SUPPORTS_MIPS16
212 select SYS_SUPPORTS_ZBOOT_UART_PROM
214 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
216 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
219 bool "Broadcom Generic BMIPS kernel"
220 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
221 select ARCH_HAS_PHYS_TO_DMA
223 select NO_EXCEPT_FILL
229 select BCM6345_L1_IRQ
230 select BCM7038_L1_IRQ
231 select BCM7120_L2_IRQ
232 select BRCMSTB_L2_IRQ
234 select DMA_NONCOHERENT
235 select SYS_SUPPORTS_32BIT_KERNEL
236 select SYS_SUPPORTS_LITTLE_ENDIAN
237 select SYS_SUPPORTS_BIG_ENDIAN
238 select SYS_SUPPORTS_HIGHMEM
239 select SYS_HAS_CPU_BMIPS32_3300
240 select SYS_HAS_CPU_BMIPS4350
241 select SYS_HAS_CPU_BMIPS4380
242 select SYS_HAS_CPU_BMIPS5000
244 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
245 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
246 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
247 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
248 select HARDIRQS_SW_RESEND
250 Build a generic DT-based kernel image that boots on select
251 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
252 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
253 must be set appropriately for your board.
256 bool "Broadcom BCM47XX based boards"
260 select DMA_NONCOHERENT
263 select SYS_HAS_CPU_MIPS32_R1
264 select NO_EXCEPT_FILL
265 select SYS_SUPPORTS_32BIT_KERNEL
266 select SYS_SUPPORTS_LITTLE_ENDIAN
267 select SYS_SUPPORTS_MIPS16
268 select SYS_SUPPORTS_ZBOOT
269 select SYS_HAS_EARLY_PRINTK
270 select USE_GENERIC_EARLY_PRINTK_8250
272 select LEDS_GPIO_REGISTER
275 select BCM47XX_SSB if !BCM47XX_BCMA
277 Support for BCM47XX based boards
280 bool "Broadcom BCM63XX based boards"
285 select DMA_NONCOHERENT
287 select SYS_SUPPORTS_32BIT_KERNEL
288 select SYS_SUPPORTS_BIG_ENDIAN
289 select SYS_HAS_EARLY_PRINTK
293 select MIPS_L1_CACHE_SHIFT_4
296 Support for BCM63XX based boards
303 select DMA_NONCOHERENT
309 select PCI_GT64XXX_PCI0
311 select SYS_HAS_CPU_NEVADA
312 select SYS_HAS_EARLY_PRINTK
313 select SYS_SUPPORTS_32BIT_KERNEL
314 select SYS_SUPPORTS_64BIT_KERNEL
315 select SYS_SUPPORTS_LITTLE_ENDIAN
316 select USE_GENERIC_EARLY_PRINTK_8250
318 config MACH_DECSTATION
322 select CEVT_R4K if CPU_R4X00
324 select CSRC_R4K if CPU_R4X00
325 select CPU_DADDI_WORKAROUNDS if 64BIT
326 select CPU_R4000_WORKAROUNDS if 64BIT
327 select CPU_R4400_WORKAROUNDS if 64BIT
328 select DMA_NONCOHERENT
331 select SYS_HAS_CPU_R3000
332 select SYS_HAS_CPU_R4X00
333 select SYS_SUPPORTS_32BIT_KERNEL
334 select SYS_SUPPORTS_64BIT_KERNEL
335 select SYS_SUPPORTS_LITTLE_ENDIAN
336 select SYS_SUPPORTS_128HZ
337 select SYS_SUPPORTS_256HZ
338 select SYS_SUPPORTS_1024HZ
339 select MIPS_L1_CACHE_SHIFT_4
341 This enables support for DEC's MIPS based workstations. For details
342 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
343 DECstation porting pages on <http://decstation.unix-ag.org/>.
345 If you have one of the following DECstation Models you definitely
346 want to choose R4xx0 for the CPU Type:
353 otherwise choose R3000.
356 bool "Jazz family of machines"
357 select ARCH_MIGHT_HAVE_PC_PARPORT
358 select ARCH_MIGHT_HAVE_PC_SERIO
361 select ARCH_MAY_HAVE_PC_FDC
364 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
365 select GENERIC_ISA_DMA
366 select HAVE_PCSPKR_PLATFORM
371 select SYS_HAS_CPU_R4X00
372 select SYS_SUPPORTS_32BIT_KERNEL
373 select SYS_SUPPORTS_64BIT_KERNEL
374 select SYS_SUPPORTS_100HZ
376 This a family of machines based on the MIPS R4030 chipset which was
377 used by several vendors to build RISC/os and Windows NT workstations.
378 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
379 Olivetti M700-10 workstations.
382 bool "Ingenic SoC based machines"
383 select SYS_SUPPORTS_32BIT_KERNEL
384 select SYS_SUPPORTS_LITTLE_ENDIAN
385 select SYS_SUPPORTS_ZBOOT_UART16550
386 select DMA_NONCOHERENT
391 select GENERIC_IRQ_CHIP
397 bool "Lantiq based platforms"
398 select DMA_NONCOHERENT
402 select SYS_HAS_CPU_MIPS32_R1
403 select SYS_HAS_CPU_MIPS32_R2
404 select SYS_SUPPORTS_BIG_ENDIAN
405 select SYS_SUPPORTS_32BIT_KERNEL
406 select SYS_SUPPORTS_MIPS16
407 select SYS_SUPPORTS_MULTITHREADING
408 select SYS_SUPPORTS_VPE_LOADER
409 select SYS_HAS_EARLY_PRINTK
416 select PINCTRL_LANTIQ
417 select ARCH_HAS_RESET_CONTROLLER
418 select RESET_CONTROLLER
421 bool "LASAT Networks platforms"
425 select DMA_NONCOHERENT
426 select SYS_HAS_EARLY_PRINTK
429 select PCI_GT64XXX_PCI0
431 select R5000_CPU_SCACHE
432 select SYS_HAS_CPU_R5000
433 select SYS_SUPPORTS_32BIT_KERNEL
434 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
435 select SYS_SUPPORTS_LITTLE_ENDIAN
437 config MACH_LOONGSON32
438 bool "Loongson-1 family of machines"
439 select SYS_SUPPORTS_ZBOOT
441 This enables support for the Loongson-1 family of machines.
443 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
444 the Institute of Computing Technology (ICT), Chinese Academy of
447 config MACH_LOONGSON64
448 bool "Loongson-2/3 family of machines"
449 select SYS_SUPPORTS_ZBOOT
451 This enables the support of Loongson-2/3 family of machines.
453 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
454 family of multi-core CPUs. They are both 64-bit general-purpose
455 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
456 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
457 in the People's Republic of China. The chief architect is Professor
460 config MACH_PISTACHIO
461 bool "IMG Pistachio SoC based boards"
465 select CLKSRC_MIPS_GIC
468 select DMA_NONCOHERENT
473 select MIPS_CPU_SCACHE
477 select SYS_HAS_CPU_MIPS32_R2
478 select SYS_SUPPORTS_32BIT_KERNEL
479 select SYS_SUPPORTS_LITTLE_ENDIAN
480 select SYS_SUPPORTS_MIPS_CPS
481 select SYS_SUPPORTS_MULTITHREADING
482 select SYS_SUPPORTS_RELOCATABLE
483 select SYS_SUPPORTS_ZBOOT
484 select SYS_HAS_EARLY_PRINTK
485 select USE_GENERIC_EARLY_PRINTK_8250
488 This enables support for the IMG Pistachio SoC platform.
491 bool "MIPS Malta board"
492 select ARCH_MAY_HAVE_PC_FDC
493 select ARCH_MIGHT_HAVE_PC_PARPORT
494 select ARCH_MIGHT_HAVE_PC_SERIO
500 select CLKSRC_MIPS_GIC
502 select DMA_MAYBE_COHERENT
503 select GENERIC_ISA_DMA
504 select HAVE_PCSPKR_PLATFORM
511 select MIPS_CPU_SCACHE
512 select MIPS_L1_CACHE_SHIFT_6
513 select PCI_GT64XXX_PCI0
517 select SYS_HAS_CPU_MIPS32_R1
518 select SYS_HAS_CPU_MIPS32_R2
519 select SYS_HAS_CPU_MIPS32_R3_5
520 select SYS_HAS_CPU_MIPS32_R5
521 select SYS_HAS_CPU_MIPS32_R6
522 select SYS_HAS_CPU_MIPS64_R1
523 select SYS_HAS_CPU_MIPS64_R2
524 select SYS_HAS_CPU_MIPS64_R6
525 select SYS_HAS_CPU_NEVADA
526 select SYS_HAS_CPU_RM7000
527 select SYS_SUPPORTS_32BIT_KERNEL
528 select SYS_SUPPORTS_64BIT_KERNEL
529 select SYS_SUPPORTS_BIG_ENDIAN
530 select SYS_SUPPORTS_HIGHMEM
531 select SYS_SUPPORTS_LITTLE_ENDIAN
532 select SYS_SUPPORTS_MICROMIPS
533 select SYS_SUPPORTS_MIPS_CMP
534 select SYS_SUPPORTS_MIPS_CPS
535 select SYS_SUPPORTS_MIPS16
536 select SYS_SUPPORTS_MULTITHREADING
537 select SYS_SUPPORTS_SMARTMIPS
538 select SYS_SUPPORTS_VPE_LOADER
539 select SYS_SUPPORTS_ZBOOT
540 select SYS_SUPPORTS_RELOCATABLE
543 select ZONE_DMA32 if 64BIT
547 This enables support for the MIPS Technologies Malta evaluation
551 bool "Microchip PIC32 Family"
553 This enables support for the Microchip PIC32 family of platforms.
555 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
559 bool "NEC EMMA2RH Mark-eins board"
563 This enables support for the NEC Electronics Mark-eins boards.
566 bool "NEC VR4100 series based machines"
569 select SYS_HAS_CPU_VR41XX
570 select SYS_SUPPORTS_MIPS16
574 bool "NXP STB220 board"
577 Support for NXP Semiconductors STB220 Development Board.
584 Support for NXP Semiconductors STB225 Development Board.
587 bool "PMC-Sierra MSP chipsets"
590 select DMA_NONCOHERENT
592 select NO_EXCEPT_FILL
594 select SYS_HAS_CPU_MIPS32_R1
595 select SYS_HAS_CPU_MIPS32_R2
596 select SYS_SUPPORTS_32BIT_KERNEL
597 select SYS_SUPPORTS_BIG_ENDIAN
598 select SYS_SUPPORTS_MIPS16
601 select SERIAL_8250_CONSOLE
602 select USB_EHCI_BIG_ENDIAN_MMIO
603 select USB_EHCI_BIG_ENDIAN_DESC
605 This adds support for the PMC-Sierra family of Multi-Service
606 Processor System-On-A-Chips. These parts include a number
607 of integrated peripherals, interfaces and DSPs in addition to
608 a variety of MIPS cores.
611 bool "Ralink based machines"
615 select DMA_NONCOHERENT
618 select SYS_HAS_CPU_MIPS32_R1
619 select SYS_HAS_CPU_MIPS32_R2
620 select SYS_SUPPORTS_32BIT_KERNEL
621 select SYS_SUPPORTS_LITTLE_ENDIAN
622 select SYS_SUPPORTS_MIPS16
623 select SYS_HAS_EARLY_PRINTK
625 select ARCH_HAS_RESET_CONTROLLER
626 select RESET_CONTROLLER
629 bool "SGI IP22 (Indy/Indigo2)"
632 select ARCH_MIGHT_HAVE_PC_SERIO
636 select DEFAULT_SGI_PARTITION
637 select DMA_NONCOHERENT
641 select IP22_CPU_SCACHE
643 select GENERIC_ISA_DMA_SUPPORT_BROKEN
645 select SGI_HAS_INDYDOG
651 select SYS_HAS_CPU_R4X00
652 select SYS_HAS_CPU_R5000
654 # Disable EARLY_PRINTK for now since it leads to overwritten prom
655 # memory during early boot on some machines.
657 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
658 # for a more details discussion
660 # select SYS_HAS_EARLY_PRINTK
661 select SYS_SUPPORTS_32BIT_KERNEL
662 select SYS_SUPPORTS_64BIT_KERNEL
663 select SYS_SUPPORTS_BIG_ENDIAN
664 select MIPS_L1_CACHE_SHIFT_7
666 This are the SGI Indy, Challenge S and Indigo2, as well as certain
667 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
668 that runs on these, say Y here.
671 bool "SGI IP27 (Origin200/2000)"
672 select ARCH_HAS_PHYS_TO_DMA
676 select DEFAULT_SGI_PARTITION
677 select SYS_HAS_EARLY_PRINTK
679 select NR_CPUS_DEFAULT_64
680 select SYS_HAS_CPU_R10000
681 select SYS_SUPPORTS_64BIT_KERNEL
682 select SYS_SUPPORTS_BIG_ENDIAN
683 select SYS_SUPPORTS_NUMA
684 select SYS_SUPPORTS_SMP
685 select MIPS_L1_CACHE_SHIFT_7
687 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
688 workstations. To compile a Linux kernel that runs on these, say Y
692 bool "SGI IP28 (Indigo2 R10k)"
695 select ARCH_MIGHT_HAVE_PC_SERIO
699 select DEFAULT_SGI_PARTITION
700 select DMA_NONCOHERENT
701 select GENERIC_ISA_DMA_SUPPORT_BROKEN
707 select SGI_HAS_INDYDOG
713 select SYS_HAS_CPU_R10000
715 # Disable EARLY_PRINTK for now since it leads to overwritten prom
716 # memory during early boot on some machines.
718 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
719 # for a more details discussion
721 # select SYS_HAS_EARLY_PRINTK
722 select SYS_SUPPORTS_64BIT_KERNEL
723 select SYS_SUPPORTS_BIG_ENDIAN
724 select MIPS_L1_CACHE_SHIFT_7
726 This is the SGI Indigo2 with R10000 processor. To compile a Linux
727 kernel that runs on these, say Y here.
731 select ARCH_HAS_PHYS_TO_DMA
737 select DMA_NONCOHERENT
740 select R5000_CPU_SCACHE
741 select RM7000_CPU_SCACHE
742 select SYS_HAS_CPU_R5000
743 select SYS_HAS_CPU_R10000 if BROKEN
744 select SYS_HAS_CPU_RM7000
745 select SYS_HAS_CPU_NEVADA
746 select SYS_SUPPORTS_64BIT_KERNEL
747 select SYS_SUPPORTS_BIG_ENDIAN
749 If you want this kernel to run on SGI O2 workstation, say Y here.
752 bool "Sibyte BCM91120C-CRhine"
754 select SIBYTE_BCM1120
756 select SYS_HAS_CPU_SB1
757 select SYS_SUPPORTS_BIG_ENDIAN
758 select SYS_SUPPORTS_LITTLE_ENDIAN
761 bool "Sibyte BCM91120x-Carmel"
763 select SIBYTE_BCM1120
765 select SYS_HAS_CPU_SB1
766 select SYS_SUPPORTS_BIG_ENDIAN
767 select SYS_SUPPORTS_LITTLE_ENDIAN
770 bool "Sibyte BCM91125C-CRhone"
772 select SIBYTE_BCM1125
774 select SYS_HAS_CPU_SB1
775 select SYS_SUPPORTS_BIG_ENDIAN
776 select SYS_SUPPORTS_HIGHMEM
777 select SYS_SUPPORTS_LITTLE_ENDIAN
780 bool "Sibyte BCM91125E-Rhone"
782 select SIBYTE_BCM1125H
784 select SYS_HAS_CPU_SB1
785 select SYS_SUPPORTS_BIG_ENDIAN
786 select SYS_SUPPORTS_LITTLE_ENDIAN
789 bool "Sibyte BCM91250A-SWARM"
791 select HAVE_PATA_PLATFORM
794 select SYS_HAS_CPU_SB1
795 select SYS_SUPPORTS_BIG_ENDIAN
796 select SYS_SUPPORTS_HIGHMEM
797 select SYS_SUPPORTS_LITTLE_ENDIAN
798 select ZONE_DMA32 if 64BIT
800 config SIBYTE_LITTLESUR
801 bool "Sibyte BCM91250C2-LittleSur"
803 select HAVE_PATA_PLATFORM
806 select SYS_HAS_CPU_SB1
807 select SYS_SUPPORTS_BIG_ENDIAN
808 select SYS_SUPPORTS_HIGHMEM
809 select SYS_SUPPORTS_LITTLE_ENDIAN
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
821 bool "Sibyte BCM91480B-BigSur"
823 select NR_CPUS_DEFAULT_4
824 select SIBYTE_BCM1x80
826 select SYS_HAS_CPU_SB1
827 select SYS_SUPPORTS_BIG_ENDIAN
828 select SYS_SUPPORTS_HIGHMEM
829 select SYS_SUPPORTS_LITTLE_ENDIAN
830 select ZONE_DMA32 if 64BIT
833 bool "SNI RM200/300/400"
834 select FW_ARC if CPU_LITTLE_ENDIAN
835 select FW_ARC32 if CPU_LITTLE_ENDIAN
836 select FW_SNIPROM if CPU_BIG_ENDIAN
837 select ARCH_MAY_HAVE_PC_FDC
838 select ARCH_MIGHT_HAVE_PC_PARPORT
839 select ARCH_MIGHT_HAVE_PC_SERIO
843 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
844 select DMA_NONCOHERENT
845 select GENERIC_ISA_DMA
846 select HAVE_PCSPKR_PLATFORM
853 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
854 select SYS_HAS_CPU_R4X00
855 select SYS_HAS_CPU_R5000
856 select SYS_HAS_CPU_R10000
857 select R5000_CPU_SCACHE
858 select SYS_HAS_EARLY_PRINTK
859 select SYS_SUPPORTS_32BIT_KERNEL
860 select SYS_SUPPORTS_64BIT_KERNEL
861 select SYS_SUPPORTS_BIG_ENDIAN
862 select SYS_SUPPORTS_HIGHMEM
863 select SYS_SUPPORTS_LITTLE_ENDIAN
865 The SNI RM200/300/400 are MIPS-based machines manufactured by
866 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
867 Technology and now in turn merged with Fujitsu. Say Y here to
868 support this machine type.
871 bool "Toshiba TX39 series based machines"
874 bool "Toshiba TX49 series based machines"
876 config MIKROTIK_RB532
877 bool "Mikrotik RB532 boards"
880 select DMA_NONCOHERENT
883 select SYS_HAS_CPU_MIPS32_R1
884 select SYS_SUPPORTS_32BIT_KERNEL
885 select SYS_SUPPORTS_LITTLE_ENDIAN
889 select MIPS_L1_CACHE_SHIFT_4
891 Support the Mikrotik(tm) RouterBoard 532 series,
892 based on the IDT RC32434 SoC.
894 config CAVIUM_OCTEON_SOC
895 bool "Cavium Networks Octeon SoC based boards"
897 select ARCH_HAS_PHYS_TO_DMA
899 select PHYS_ADDR_T_64BIT
900 select SYS_SUPPORTS_64BIT_KERNEL
901 select SYS_SUPPORTS_BIG_ENDIAN
903 select EDAC_ATOMIC_SCRUB
904 select SYS_SUPPORTS_LITTLE_ENDIAN
905 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
906 select SYS_HAS_EARLY_PRINTK
907 select SYS_HAS_CPU_CAVIUM_OCTEON
914 select ARCH_SPARSEMEM_ENABLE
915 select SYS_SUPPORTS_SMP
916 select NR_CPUS_DEFAULT_64
917 select MIPS_NR_CPU_NR_MAP_1024
919 select MTD_COMPLEX_MAPPINGS
921 select SYS_SUPPORTS_RELOCATABLE
923 This option supports all of the Octeon reference boards from Cavium
924 Networks. It builds a kernel that dynamically determines the Octeon
925 CPU type and supports all known board reference implementations.
926 Some of the supported boards are:
933 Say Y here for most Octeon reference boards.
936 bool "Netlogic XLR/XLS based systems"
939 select SYS_HAS_CPU_XLR
940 select SYS_SUPPORTS_SMP
943 select SYS_SUPPORTS_32BIT_KERNEL
944 select SYS_SUPPORTS_64BIT_KERNEL
945 select PHYS_ADDR_T_64BIT
946 select SYS_SUPPORTS_BIG_ENDIAN
947 select SYS_SUPPORTS_HIGHMEM
948 select NR_CPUS_DEFAULT_32
952 select ZONE_DMA32 if 64BIT
954 select SYS_HAS_EARLY_PRINTK
955 select SYS_SUPPORTS_ZBOOT
956 select SYS_SUPPORTS_ZBOOT_UART16550
958 Support for systems based on Netlogic XLR and XLS processors.
959 Say Y here if you have a XLR or XLS based board.
962 bool "Netlogic XLP based systems"
965 select SYS_HAS_CPU_XLP
966 select SYS_SUPPORTS_SMP
968 select SYS_SUPPORTS_32BIT_KERNEL
969 select SYS_SUPPORTS_64BIT_KERNEL
970 select PHYS_ADDR_T_64BIT
972 select SYS_SUPPORTS_BIG_ENDIAN
973 select SYS_SUPPORTS_LITTLE_ENDIAN
974 select SYS_SUPPORTS_HIGHMEM
975 select NR_CPUS_DEFAULT_32
979 select ZONE_DMA32 if 64BIT
981 select SYS_HAS_EARLY_PRINTK
983 select SYS_SUPPORTS_ZBOOT
984 select SYS_SUPPORTS_ZBOOT_UART16550
986 This board is based on Netlogic XLP Processor.
987 Say Y here if you have a XLP based board.
990 bool "Para-Virtualized guest system"
993 select SYS_SUPPORTS_64BIT_KERNEL
994 select SYS_SUPPORTS_32BIT_KERNEL
995 select SYS_SUPPORTS_BIG_ENDIAN
996 select SYS_SUPPORTS_SMP
997 select NR_CPUS_DEFAULT_4
998 select SYS_HAS_EARLY_PRINTK
999 select SYS_HAS_CPU_MIPS32_R2
1000 select SYS_HAS_CPU_MIPS64_R2
1001 select SYS_HAS_CPU_CAVIUM_OCTEON
1003 select SWAP_IO_SPACE
1005 This option supports guest running under ????
1009 source "arch/mips/alchemy/Kconfig"
1010 source "arch/mips/ath25/Kconfig"
1011 source "arch/mips/ath79/Kconfig"
1012 source "arch/mips/bcm47xx/Kconfig"
1013 source "arch/mips/bcm63xx/Kconfig"
1014 source "arch/mips/bmips/Kconfig"
1015 source "arch/mips/generic/Kconfig"
1016 source "arch/mips/jazz/Kconfig"
1017 source "arch/mips/jz4740/Kconfig"
1018 source "arch/mips/lantiq/Kconfig"
1019 source "arch/mips/lasat/Kconfig"
1020 source "arch/mips/pic32/Kconfig"
1021 source "arch/mips/pistachio/Kconfig"
1022 source "arch/mips/pmcs-msp71xx/Kconfig"
1023 source "arch/mips/ralink/Kconfig"
1024 source "arch/mips/sgi-ip27/Kconfig"
1025 source "arch/mips/sibyte/Kconfig"
1026 source "arch/mips/txx9/Kconfig"
1027 source "arch/mips/vr41xx/Kconfig"
1028 source "arch/mips/cavium-octeon/Kconfig"
1029 source "arch/mips/loongson32/Kconfig"
1030 source "arch/mips/loongson64/Kconfig"
1031 source "arch/mips/netlogic/Kconfig"
1032 source "arch/mips/paravirt/Kconfig"
1036 config RWSEM_GENERIC_SPINLOCK
1040 config RWSEM_XCHGADD_ALGORITHM
1043 config GENERIC_HWEIGHT
1047 config GENERIC_CALIBRATE_DELAY
1051 config SCHED_OMIT_FRAME_POINTER
1056 # Select some configuration options automatically based on user selections.
1061 config ARCH_MAY_HAVE_PC_FDC
1097 config MIPS_CLOCK_VSYSCALL
1098 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1107 config ARCH_SUPPORTS_UPROBES
1110 config DMA_MAYBE_COHERENT
1111 select ARCH_HAS_DMA_COHERENCE_H
1112 select DMA_NONCOHERENT
1115 config DMA_PERDEV_COHERENT
1117 select DMA_NONCOHERENT
1119 config DMA_NONCOHERENT
1121 select ARCH_HAS_DMA_MMAP_PGPROT
1122 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1123 select ARCH_HAS_SYNC_DMA_FOR_CPU
1124 select NEED_DMA_MAP_STATE
1125 select ARCH_HAS_DMA_COHERENT_TO_PFN
1126 select DMA_NONCOHERENT_CACHE_SYNC
1128 config SYS_HAS_EARLY_PRINTK
1131 config SYS_SUPPORTS_HOTPLUG_CPU
1134 config MIPS_BONITO64
1149 config NO_IOPORT_MAP
1154 default y if !CPU_HAS_LOAD_STORE_LR
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 CPU_HAS_LOAD_STORE_LR
1374 select WEAK_ORDERING
1375 select WEAK_REORDERING_BEYOND_LLSC
1376 select MIPS_PGD_C0_CONTEXT
1377 select MIPS_L1_CACHE_SHIFT_6
1381 The Loongson 3 processor implements the MIPS64R2 instruction
1382 set with many extensions.
1384 config LOONGSON3_ENHANCEMENT
1385 bool "New Loongson 3 CPU Enhancements"
1388 select CPU_HAS_PREFETCH
1389 depends on CPU_LOONGSON3
1391 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1392 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1393 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1394 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1395 Fast TLB refill support, etc.
1397 This option enable those enhancements which are not probed at run
1398 time. If you want a generic kernel to run on all Loongson 3 machines,
1399 please say 'N' here. If you want a high-performance kernel to run on
1400 new Loongson 3 machines only, please say 'Y' here.
1402 config CPU_LOONGSON2E
1404 depends on SYS_HAS_CPU_LOONGSON2E
1405 select CPU_LOONGSON2
1407 The Loongson 2E processor implements the MIPS III instruction set
1408 with many extensions.
1410 It has an internal FPGA northbridge, which is compatible to
1413 config CPU_LOONGSON2F
1415 depends on SYS_HAS_CPU_LOONGSON2F
1416 select CPU_LOONGSON2
1419 The Loongson 2F processor implements the MIPS III instruction set
1420 with many extensions.
1422 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1423 have a similar programming interface with FPGA northbridge used in
1426 config CPU_LOONGSON1B
1428 depends on SYS_HAS_CPU_LOONGSON1B
1429 select CPU_LOONGSON1
1430 select LEDS_GPIO_REGISTER
1432 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1433 Release 1 instruction set and part of the MIPS32 Release 2
1436 config CPU_LOONGSON1C
1438 depends on SYS_HAS_CPU_LOONGSON1C
1439 select CPU_LOONGSON1
1440 select LEDS_GPIO_REGISTER
1442 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1443 Release 1 instruction set and part of the MIPS32 Release 2
1446 config CPU_MIPS32_R1
1447 bool "MIPS32 Release 1"
1448 depends on SYS_HAS_CPU_MIPS32_R1
1449 select CPU_HAS_PREFETCH
1450 select CPU_HAS_LOAD_STORE_LR
1451 select CPU_SUPPORTS_32BIT_KERNEL
1452 select CPU_SUPPORTS_HIGHMEM
1454 Choose this option to build a kernel for release 1 or later of the
1455 MIPS32 architecture. Most modern embedded systems with a 32-bit
1456 MIPS processor are based on a MIPS32 processor. If you know the
1457 specific type of processor in your system, choose those that one
1458 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1459 Release 2 of the MIPS32 architecture is available since several
1460 years so chances are you even have a MIPS32 Release 2 processor
1461 in which case you should choose CPU_MIPS32_R2 instead for better
1464 config CPU_MIPS32_R2
1465 bool "MIPS32 Release 2"
1466 depends on SYS_HAS_CPU_MIPS32_R2
1467 select CPU_HAS_PREFETCH
1468 select CPU_HAS_LOAD_STORE_LR
1469 select CPU_SUPPORTS_32BIT_KERNEL
1470 select CPU_SUPPORTS_HIGHMEM
1471 select CPU_SUPPORTS_MSA
1474 Choose this option to build a kernel for release 2 or later of the
1475 MIPS32 architecture. Most modern embedded systems with a 32-bit
1476 MIPS processor are based on a MIPS32 processor. If you know the
1477 specific type of processor in your system, choose those that one
1478 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1480 config CPU_MIPS32_R6
1481 bool "MIPS32 Release 6"
1482 depends on SYS_HAS_CPU_MIPS32_R6
1483 select CPU_HAS_PREFETCH
1484 select CPU_SUPPORTS_32BIT_KERNEL
1485 select CPU_SUPPORTS_HIGHMEM
1486 select CPU_SUPPORTS_MSA
1488 select MIPS_O32_FP64_SUPPORT
1490 Choose this option to build a kernel for release 6 or later of the
1491 MIPS32 architecture. New MIPS processors, starting with the Warrior
1492 family, are based on a MIPS32r6 processor. If you own an older
1493 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1495 config CPU_MIPS64_R1
1496 bool "MIPS64 Release 1"
1497 depends on SYS_HAS_CPU_MIPS64_R1
1498 select CPU_HAS_PREFETCH
1499 select CPU_HAS_LOAD_STORE_LR
1500 select CPU_SUPPORTS_32BIT_KERNEL
1501 select CPU_SUPPORTS_64BIT_KERNEL
1502 select CPU_SUPPORTS_HIGHMEM
1503 select CPU_SUPPORTS_HUGEPAGES
1505 Choose this option to build a kernel for release 1 or later of the
1506 MIPS64 architecture. Many modern embedded systems with a 64-bit
1507 MIPS processor are based on a MIPS64 processor. If you know the
1508 specific type of processor in your system, choose those that one
1509 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1510 Release 2 of the MIPS64 architecture is available since several
1511 years so chances are you even have a MIPS64 Release 2 processor
1512 in which case you should choose CPU_MIPS64_R2 instead for better
1515 config CPU_MIPS64_R2
1516 bool "MIPS64 Release 2"
1517 depends on SYS_HAS_CPU_MIPS64_R2
1518 select CPU_HAS_PREFETCH
1519 select CPU_HAS_LOAD_STORE_LR
1520 select CPU_SUPPORTS_32BIT_KERNEL
1521 select CPU_SUPPORTS_64BIT_KERNEL
1522 select CPU_SUPPORTS_HIGHMEM
1523 select CPU_SUPPORTS_HUGEPAGES
1524 select CPU_SUPPORTS_MSA
1527 Choose this option to build a kernel for release 2 or later of the
1528 MIPS64 architecture. Many modern embedded systems with a 64-bit
1529 MIPS processor are based on a MIPS64 processor. If you know the
1530 specific type of processor in your system, choose those that one
1531 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1533 config CPU_MIPS64_R6
1534 bool "MIPS64 Release 6"
1535 depends on SYS_HAS_CPU_MIPS64_R6
1536 select CPU_HAS_PREFETCH
1537 select CPU_SUPPORTS_32BIT_KERNEL
1538 select CPU_SUPPORTS_64BIT_KERNEL
1539 select CPU_SUPPORTS_HIGHMEM
1540 select CPU_SUPPORTS_MSA
1541 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1544 Choose this option to build a kernel for release 6 or later of the
1545 MIPS64 architecture. New MIPS processors, starting with the Warrior
1546 family, are based on a MIPS64r6 processor. If you own an older
1547 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1551 depends on SYS_HAS_CPU_R3000
1553 select CPU_HAS_LOAD_STORE_LR
1554 select CPU_SUPPORTS_32BIT_KERNEL
1555 select CPU_SUPPORTS_HIGHMEM
1557 Please make sure to pick the right CPU type. Linux/MIPS is not
1558 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1559 *not* work on R4000 machines and vice versa. However, since most
1560 of the supported machines have an R4000 (or similar) CPU, R4x00
1561 might be a safe bet. If the resulting kernel does not work,
1562 try to recompile with R3000.
1566 depends on SYS_HAS_CPU_TX39XX
1567 select CPU_SUPPORTS_32BIT_KERNEL
1568 select CPU_HAS_LOAD_STORE_LR
1572 depends on SYS_HAS_CPU_VR41XX
1573 select CPU_SUPPORTS_32BIT_KERNEL
1574 select CPU_SUPPORTS_64BIT_KERNEL
1575 select CPU_HAS_LOAD_STORE_LR
1577 The options selects support for the NEC VR4100 series of processors.
1578 Only choose this option if you have one of these processors as a
1579 kernel built with this option will not run on any other type of
1580 processor or vice versa.
1584 depends on SYS_HAS_CPU_R4300
1585 select CPU_SUPPORTS_32BIT_KERNEL
1586 select CPU_SUPPORTS_64BIT_KERNEL
1587 select CPU_HAS_LOAD_STORE_LR
1589 MIPS Technologies R4300-series processors.
1593 depends on SYS_HAS_CPU_R4X00
1594 select CPU_SUPPORTS_32BIT_KERNEL
1595 select CPU_SUPPORTS_64BIT_KERNEL
1596 select CPU_SUPPORTS_HUGEPAGES
1597 select CPU_HAS_LOAD_STORE_LR
1599 MIPS Technologies R4000-series processors other than 4300, including
1600 the R4000, R4400, R4600, and 4700.
1604 depends on SYS_HAS_CPU_TX49XX
1605 select CPU_HAS_PREFETCH
1606 select CPU_HAS_LOAD_STORE_LR
1607 select CPU_SUPPORTS_32BIT_KERNEL
1608 select CPU_SUPPORTS_64BIT_KERNEL
1609 select CPU_SUPPORTS_HUGEPAGES
1613 depends on SYS_HAS_CPU_R5000
1614 select CPU_SUPPORTS_32BIT_KERNEL
1615 select CPU_SUPPORTS_64BIT_KERNEL
1616 select CPU_SUPPORTS_HUGEPAGES
1617 select CPU_HAS_LOAD_STORE_LR
1619 MIPS Technologies R5000-series processors other than the Nevada.
1623 depends on SYS_HAS_CPU_R5432
1624 select CPU_SUPPORTS_32BIT_KERNEL
1625 select CPU_SUPPORTS_64BIT_KERNEL
1626 select CPU_SUPPORTS_HUGEPAGES
1627 select CPU_HAS_LOAD_STORE_LR
1631 depends on SYS_HAS_CPU_R5500
1632 select CPU_SUPPORTS_32BIT_KERNEL
1633 select CPU_SUPPORTS_64BIT_KERNEL
1634 select CPU_SUPPORTS_HUGEPAGES
1635 select CPU_HAS_LOAD_STORE_LR
1637 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1642 depends on SYS_HAS_CPU_NEVADA
1643 select CPU_SUPPORTS_32BIT_KERNEL
1644 select CPU_SUPPORTS_64BIT_KERNEL
1645 select CPU_SUPPORTS_HUGEPAGES
1646 select CPU_HAS_LOAD_STORE_LR
1648 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1652 depends on SYS_HAS_CPU_R8000
1653 select CPU_HAS_PREFETCH
1654 select CPU_HAS_LOAD_STORE_LR
1655 select CPU_SUPPORTS_64BIT_KERNEL
1657 MIPS Technologies R8000 processors. Note these processors are
1658 uncommon and the support for them is incomplete.
1662 depends on SYS_HAS_CPU_R10000
1663 select CPU_HAS_PREFETCH
1664 select CPU_HAS_LOAD_STORE_LR
1665 select CPU_SUPPORTS_32BIT_KERNEL
1666 select CPU_SUPPORTS_64BIT_KERNEL
1667 select CPU_SUPPORTS_HIGHMEM
1668 select CPU_SUPPORTS_HUGEPAGES
1670 MIPS Technologies R10000-series processors.
1674 depends on SYS_HAS_CPU_RM7000
1675 select CPU_HAS_PREFETCH
1676 select CPU_HAS_LOAD_STORE_LR
1677 select CPU_SUPPORTS_32BIT_KERNEL
1678 select CPU_SUPPORTS_64BIT_KERNEL
1679 select CPU_SUPPORTS_HIGHMEM
1680 select CPU_SUPPORTS_HUGEPAGES
1684 depends on SYS_HAS_CPU_SB1
1685 select CPU_HAS_LOAD_STORE_LR
1686 select CPU_SUPPORTS_32BIT_KERNEL
1687 select CPU_SUPPORTS_64BIT_KERNEL
1688 select CPU_SUPPORTS_HIGHMEM
1689 select CPU_SUPPORTS_HUGEPAGES
1690 select WEAK_ORDERING
1692 config CPU_CAVIUM_OCTEON
1693 bool "Cavium Octeon processor"
1694 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1695 select CPU_HAS_PREFETCH
1696 select CPU_HAS_LOAD_STORE_LR
1697 select CPU_SUPPORTS_64BIT_KERNEL
1698 select WEAK_ORDERING
1699 select CPU_SUPPORTS_HIGHMEM
1700 select CPU_SUPPORTS_HUGEPAGES
1701 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1702 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1703 select MIPS_L1_CACHE_SHIFT_7
1706 The Cavium Octeon processor is a highly integrated chip containing
1707 many ethernet hardware widgets for networking tasks. The processor
1708 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1709 Full details can be found at http://www.caviumnetworks.com.
1712 bool "Broadcom BMIPS"
1713 depends on SYS_HAS_CPU_BMIPS
1715 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1716 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1717 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1718 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1719 select CPU_SUPPORTS_32BIT_KERNEL
1720 select DMA_NONCOHERENT
1722 select SWAP_IO_SPACE
1723 select WEAK_ORDERING
1724 select CPU_SUPPORTS_HIGHMEM
1725 select CPU_HAS_PREFETCH
1726 select CPU_HAS_LOAD_STORE_LR
1727 select CPU_SUPPORTS_CPUFREQ
1728 select MIPS_EXTERNAL_TIMER
1730 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1733 bool "Netlogic XLR SoC"
1734 depends on SYS_HAS_CPU_XLR
1735 select CPU_HAS_LOAD_STORE_LR
1736 select CPU_SUPPORTS_32BIT_KERNEL
1737 select CPU_SUPPORTS_64BIT_KERNEL
1738 select CPU_SUPPORTS_HIGHMEM
1739 select CPU_SUPPORTS_HUGEPAGES
1740 select WEAK_ORDERING
1741 select WEAK_REORDERING_BEYOND_LLSC
1743 Netlogic Microsystems XLR/XLS processors.
1746 bool "Netlogic XLP SoC"
1747 depends on SYS_HAS_CPU_XLP
1748 select CPU_SUPPORTS_32BIT_KERNEL
1749 select CPU_SUPPORTS_64BIT_KERNEL
1750 select CPU_SUPPORTS_HIGHMEM
1751 select WEAK_ORDERING
1752 select WEAK_REORDERING_BEYOND_LLSC
1753 select CPU_HAS_PREFETCH
1754 select CPU_HAS_LOAD_STORE_LR
1756 select CPU_SUPPORTS_HUGEPAGES
1757 select MIPS_ASID_BITS_VARIABLE
1759 Netlogic Microsystems XLP processors.
1762 config CPU_MIPS32_3_5_FEATURES
1763 bool "MIPS32 Release 3.5 Features"
1764 depends on SYS_HAS_CPU_MIPS32_R3_5
1765 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1767 Choose this option to build a kernel for release 2 or later of the
1768 MIPS32 architecture including features from the 3.5 release such as
1769 support for Enhanced Virtual Addressing (EVA).
1771 config CPU_MIPS32_3_5_EVA
1772 bool "Enhanced Virtual Addressing (EVA)"
1773 depends on CPU_MIPS32_3_5_FEATURES
1777 Choose this option if you want to enable the Enhanced Virtual
1778 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1779 One of its primary benefits is an increase in the maximum size
1780 of lowmem (up to 3GB). If unsure, say 'N' here.
1782 config CPU_MIPS32_R5_FEATURES
1783 bool "MIPS32 Release 5 Features"
1784 depends on SYS_HAS_CPU_MIPS32_R5
1785 depends on CPU_MIPS32_R2
1787 Choose this option to build a kernel for release 2 or later of the
1788 MIPS32 architecture including features from release 5 such as
1789 support for Extended Physical Addressing (XPA).
1791 config CPU_MIPS32_R5_XPA
1792 bool "Extended Physical Addressing (XPA)"
1793 depends on CPU_MIPS32_R5_FEATURES
1795 depends on !PAGE_SIZE_4KB
1796 depends on SYS_SUPPORTS_HIGHMEM
1799 select PHYS_ADDR_T_64BIT
1802 Choose this option if you want to enable the Extended Physical
1803 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1804 benefit is to increase physical addressing equal to or greater
1805 than 40 bits. Note that this has the side effect of turning on
1806 64-bit addressing which in turn makes the PTEs 64-bit in size.
1807 If unsure, say 'N' here.
1810 config CPU_NOP_WORKAROUNDS
1813 config CPU_JUMP_WORKAROUNDS
1816 config CPU_LOONGSON2F_WORKAROUNDS
1817 bool "Loongson 2F Workarounds"
1819 select CPU_NOP_WORKAROUNDS
1820 select CPU_JUMP_WORKAROUNDS
1822 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1823 require workarounds. Without workarounds the system may hang
1824 unexpectedly. For more information please refer to the gas
1825 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1827 Loongson 2F03 and later have fixed these issues and no workarounds
1828 are needed. The workarounds have no significant side effect on them
1829 but may decrease the performance of the system so this option should
1830 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1833 If unsure, please say Y.
1834 endif # CPU_LOONGSON2F
1836 config SYS_SUPPORTS_ZBOOT
1838 select HAVE_KERNEL_GZIP
1839 select HAVE_KERNEL_BZIP2
1840 select HAVE_KERNEL_LZ4
1841 select HAVE_KERNEL_LZMA
1842 select HAVE_KERNEL_LZO
1843 select HAVE_KERNEL_XZ
1845 config SYS_SUPPORTS_ZBOOT_UART16550
1847 select SYS_SUPPORTS_ZBOOT
1849 config SYS_SUPPORTS_ZBOOT_UART_PROM
1851 select SYS_SUPPORTS_ZBOOT
1853 config CPU_LOONGSON2
1855 select CPU_SUPPORTS_32BIT_KERNEL
1856 select CPU_SUPPORTS_64BIT_KERNEL
1857 select CPU_SUPPORTS_HIGHMEM
1858 select CPU_SUPPORTS_HUGEPAGES
1859 select ARCH_HAS_PHYS_TO_DMA
1860 select CPU_HAS_LOAD_STORE_LR
1862 config CPU_LOONGSON1
1866 select CPU_HAS_PREFETCH
1867 select CPU_HAS_LOAD_STORE_LR
1868 select CPU_SUPPORTS_32BIT_KERNEL
1869 select CPU_SUPPORTS_HIGHMEM
1870 select CPU_SUPPORTS_CPUFREQ
1872 config CPU_BMIPS32_3300
1873 select SMP_UP if SMP
1876 config CPU_BMIPS4350
1878 select SYS_SUPPORTS_SMP
1879 select SYS_SUPPORTS_HOTPLUG_CPU
1881 config CPU_BMIPS4380
1883 select MIPS_L1_CACHE_SHIFT_6
1884 select SYS_SUPPORTS_SMP
1885 select SYS_SUPPORTS_HOTPLUG_CPU
1888 config CPU_BMIPS5000
1890 select MIPS_CPU_SCACHE
1891 select MIPS_L1_CACHE_SHIFT_7
1892 select SYS_SUPPORTS_SMP
1893 select SYS_SUPPORTS_HOTPLUG_CPU
1896 config SYS_HAS_CPU_LOONGSON3
1898 select CPU_SUPPORTS_CPUFREQ
1901 config SYS_HAS_CPU_LOONGSON2E
1904 config SYS_HAS_CPU_LOONGSON2F
1906 select CPU_SUPPORTS_CPUFREQ
1907 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1908 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1910 config SYS_HAS_CPU_LOONGSON1B
1913 config SYS_HAS_CPU_LOONGSON1C
1916 config SYS_HAS_CPU_MIPS32_R1
1919 config SYS_HAS_CPU_MIPS32_R2
1922 config SYS_HAS_CPU_MIPS32_R3_5
1925 config SYS_HAS_CPU_MIPS32_R5
1928 config SYS_HAS_CPU_MIPS32_R6
1931 config SYS_HAS_CPU_MIPS64_R1
1934 config SYS_HAS_CPU_MIPS64_R2
1937 config SYS_HAS_CPU_MIPS64_R6
1940 config SYS_HAS_CPU_R3000
1943 config SYS_HAS_CPU_TX39XX
1946 config SYS_HAS_CPU_VR41XX
1949 config SYS_HAS_CPU_R4300
1952 config SYS_HAS_CPU_R4X00
1955 config SYS_HAS_CPU_TX49XX
1958 config SYS_HAS_CPU_R5000
1961 config SYS_HAS_CPU_R5432
1964 config SYS_HAS_CPU_R5500
1967 config SYS_HAS_CPU_NEVADA
1970 config SYS_HAS_CPU_R8000
1973 config SYS_HAS_CPU_R10000
1976 config SYS_HAS_CPU_RM7000
1979 config SYS_HAS_CPU_SB1
1982 config SYS_HAS_CPU_CAVIUM_OCTEON
1985 config SYS_HAS_CPU_BMIPS
1988 config SYS_HAS_CPU_BMIPS32_3300
1990 select SYS_HAS_CPU_BMIPS
1992 config SYS_HAS_CPU_BMIPS4350
1994 select SYS_HAS_CPU_BMIPS
1996 config SYS_HAS_CPU_BMIPS4380
1998 select SYS_HAS_CPU_BMIPS
2000 config SYS_HAS_CPU_BMIPS5000
2002 select SYS_HAS_CPU_BMIPS
2004 config SYS_HAS_CPU_XLR
2007 config SYS_HAS_CPU_XLP
2011 # CPU may reorder R->R, R->W, W->R, W->W
2012 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2014 config WEAK_ORDERING
2018 # CPU may reorder reads and writes beyond LL/SC
2019 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2021 config WEAK_REORDERING_BEYOND_LLSC
2026 # These two indicate any level of the MIPS32 and MIPS64 architecture
2030 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2034 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2037 # These two indicate the revision of the architecture, either Release 1 or Release 2
2041 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2045 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2051 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2053 select HAVE_ARCH_BITREVERSE
2054 select MIPS_ASID_BITS_VARIABLE
2055 select MIPS_CRC_SUPPORT
2064 config SYS_SUPPORTS_32BIT_KERNEL
2066 config SYS_SUPPORTS_64BIT_KERNEL
2068 config CPU_SUPPORTS_32BIT_KERNEL
2070 config CPU_SUPPORTS_64BIT_KERNEL
2072 config CPU_SUPPORTS_CPUFREQ
2074 config CPU_SUPPORTS_ADDRWINCFG
2076 config CPU_SUPPORTS_HUGEPAGES
2078 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2080 config MIPS_PGD_C0_CONTEXT
2082 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2085 # Set to y for ptrace access to watch registers.
2087 config HARDWARE_WATCHPOINTS
2089 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2094 prompt "Kernel code model"
2096 You should only select this option if you have a workload that
2097 actually benefits from 64-bit processing or if your machine has
2098 large memory. You will only be presented a single option in this
2099 menu if your system does not support both 32-bit and 64-bit kernels.
2102 bool "32-bit kernel"
2103 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2106 Select this option if you want to build a 32-bit kernel.
2109 bool "64-bit kernel"
2110 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2112 Select this option if you want to build a 64-bit kernel.
2117 bool "KVM Guest Kernel"
2118 depends on BROKEN_ON_SMP
2120 Select this option if building a guest kernel for KVM (Trap & Emulate)
2123 config KVM_GUEST_TIMER_FREQ
2124 int "Count/Compare Timer Frequency (MHz)"
2125 depends on KVM_GUEST
2128 Set this to non-zero if building a guest kernel for KVM to skip RTC
2129 emulation when determining guest CPU Frequency. Instead, the guest's
2130 timer frequency is specified directly.
2132 config MIPS_VA_BITS_48
2133 bool "48 bits virtual memory"
2136 Support a maximum at least 48 bits of application virtual
2137 memory. Default is 40 bits or less, depending on the CPU.
2138 For page sizes 16k and above, this option results in a small
2139 memory overhead for page tables. For 4k page size, a fourth
2140 level of page tables is added which imposes both a memory
2141 overhead as well as slower TLB fault handling.
2146 prompt "Kernel page size"
2147 default PAGE_SIZE_4KB
2149 config PAGE_SIZE_4KB
2151 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2153 This option select the standard 4kB Linux page size. On some
2154 R3000-family processors this is the only available page size. Using
2155 4kB page size will minimize memory consumption and is therefore
2156 recommended for low memory systems.
2158 config PAGE_SIZE_8KB
2160 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2161 depends on !MIPS_VA_BITS_48
2163 Using 8kB page size will result in higher performance kernel at
2164 the price of higher memory consumption. This option is available
2165 only on R8000 and cnMIPS processors. Note that you will need a
2166 suitable Linux distribution to support this.
2168 config PAGE_SIZE_16KB
2170 depends on !CPU_R3000 && !CPU_TX39XX
2172 Using 16kB page size will result in higher performance kernel at
2173 the price of higher memory consumption. This option is available on
2174 all non-R3000 family processors. Note that you will need a suitable
2175 Linux distribution to support this.
2177 config PAGE_SIZE_32KB
2179 depends on CPU_CAVIUM_OCTEON
2180 depends on !MIPS_VA_BITS_48
2182 Using 32kB page size will result in higher performance kernel at
2183 the price of higher memory consumption. This option is available
2184 only on cnMIPS cores. Note that you will need a suitable Linux
2185 distribution to support this.
2187 config PAGE_SIZE_64KB
2189 depends on !CPU_R3000 && !CPU_TX39XX
2191 Using 64kB page size will result in higher performance kernel at
2192 the price of higher memory consumption. This option is available on
2193 all non-R3000 family processor. Not that at the time of this
2194 writing this option is still high experimental.
2198 config FORCE_MAX_ZONEORDER
2199 int "Maximum zone order"
2200 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2201 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2202 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2203 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2204 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2205 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2209 The kernel memory allocator divides physically contiguous memory
2210 blocks into "zones", where each zone is a power of two number of
2211 pages. This option selects the largest power of two that the kernel
2212 keeps in the memory allocator. If you need to allocate very large
2213 blocks of physically contiguous memory, then you may need to
2214 increase this value.
2216 This config option is actually maximum order plus one. For example,
2217 a value of 11 means that the largest free memory block is 2^10 pages.
2219 The page size is not necessarily 4KB. Keep this in mind
2220 when choosing a value for this option.
2225 config IP22_CPU_SCACHE
2230 # Support for a MIPS32 / MIPS64 style S-caches
2232 config MIPS_CPU_SCACHE
2236 config R5000_CPU_SCACHE
2240 config RM7000_CPU_SCACHE
2244 config SIBYTE_DMA_PAGEOPS
2245 bool "Use DMA to clear/copy pages"
2248 Instead of using the CPU to zero and copy pages, use a Data Mover
2249 channel. These DMA channels are otherwise unused by the standard
2250 SiByte Linux port. Seems to give a small performance benefit.
2252 config CPU_HAS_PREFETCH
2255 config CPU_GENERIC_DUMP_TLB
2257 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
2261 default y if !(CPU_R3000 || CPU_TX39XX)
2263 config CPU_R4K_CACHE_TLB
2265 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2268 bool "MIPS MT SMP support (1 TC on each available VPE)"
2270 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2271 select CPU_MIPSR2_IRQ_VI
2272 select CPU_MIPSR2_IRQ_EI
2277 select SYS_SUPPORTS_SMP
2278 select SYS_SUPPORTS_SCHED_SMT
2279 select MIPS_PERF_SHARED_TC_COUNTERS
2281 This is a kernel model which is known as SMVP. This is supported
2282 on cores with the MT ASE and uses the available VPEs to implement
2283 virtual processors which supports SMP. This is equivalent to the
2284 Intel Hyperthreading feature. For further information go to
2285 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2291 bool "SMT (multithreading) scheduler support"
2292 depends on SYS_SUPPORTS_SCHED_SMT
2295 SMT scheduler support improves the CPU scheduler's decision making
2296 when dealing with MIPS MT enabled cores at a cost of slightly
2297 increased overhead in some places. If unsure say N here.
2299 config SYS_SUPPORTS_SCHED_SMT
2302 config SYS_SUPPORTS_MULTITHREADING
2305 config MIPS_MT_FPAFF
2306 bool "Dynamic FPU affinity for FP-intensive threads"
2308 depends on MIPS_MT_SMP
2310 config MIPSR2_TO_R6_EMULATOR
2311 bool "MIPS R2-to-R6 emulator"
2312 depends on CPU_MIPSR6
2315 Choose this option if you want to run non-R6 MIPS userland code.
2316 Even if you say 'Y' here, the emulator will still be disabled by
2317 default. You can enable it using the 'mipsr2emu' kernel option.
2318 The only reason this is a build-time option is to save ~14K from the
2321 config SYS_SUPPORTS_VPE_LOADER
2323 depends on SYS_SUPPORTS_MULTITHREADING
2325 Indicates that the platform supports the VPE loader, and provides
2328 config MIPS_VPE_LOADER
2329 bool "VPE loader support."
2330 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2331 select CPU_MIPSR2_IRQ_VI
2332 select CPU_MIPSR2_IRQ_EI
2335 Includes a loader for loading an elf relocatable object
2336 onto another VPE and running it.
2338 config MIPS_VPE_LOADER_CMP
2341 depends on MIPS_VPE_LOADER && MIPS_CMP
2343 config MIPS_VPE_LOADER_MT
2346 depends on MIPS_VPE_LOADER && !MIPS_CMP
2348 config MIPS_VPE_LOADER_TOM
2349 bool "Load VPE program into memory hidden from linux"
2350 depends on MIPS_VPE_LOADER
2353 The loader can use memory that is present but has been hidden from
2354 Linux using the kernel command line option "mem=xxMB". It's up to
2355 you to ensure the amount you put in the option and the space your
2356 program requires is less or equal to the amount physically present.
2358 config MIPS_VPE_APSP_API
2359 bool "Enable support for AP/SP API (RTLX)"
2360 depends on MIPS_VPE_LOADER
2362 config MIPS_VPE_APSP_API_CMP
2365 depends on MIPS_VPE_APSP_API && MIPS_CMP
2367 config MIPS_VPE_APSP_API_MT
2370 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2373 bool "MIPS CMP framework support (DEPRECATED)"
2374 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2377 select SYS_SUPPORTS_SMP
2378 select WEAK_ORDERING
2381 Select this if you are using a bootloader which implements the "CMP
2382 framework" protocol (ie. YAMON) and want your kernel to make use of
2383 its ability to start secondary CPUs.
2385 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2389 bool "MIPS Coherent Processing System support"
2390 depends on SYS_SUPPORTS_MIPS_CPS
2392 select MIPS_CPS_PM if HOTPLUG_CPU
2394 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2395 select SYS_SUPPORTS_HOTPLUG_CPU
2396 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2397 select SYS_SUPPORTS_SMP
2398 select WEAK_ORDERING
2400 Select this if you wish to run an SMP kernel across multiple cores
2401 within a MIPS Coherent Processing System. When this option is
2402 enabled the kernel will probe for other cores and boot them with
2403 no external assistance. It is safe to enable this when hardware
2404 support is unavailable.
2417 config SB1_PASS_2_WORKAROUNDS
2419 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2422 config SB1_PASS_2_1_WORKAROUNDS
2424 depends on CPU_SB1 && CPU_SB1_PASS_2
2429 prompt "SmartMIPS or microMIPS ASE support"
2431 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2434 Select this if you want neither microMIPS nor SmartMIPS support
2436 config CPU_HAS_SMARTMIPS
2437 depends on SYS_SUPPORTS_SMARTMIPS
2440 SmartMIPS is a extension of the MIPS32 architecture aimed at
2441 increased security at both hardware and software level for
2442 smartcards. Enabling this option will allow proper use of the
2443 SmartMIPS instructions by Linux applications. However a kernel with
2444 this option will not work on a MIPS core without SmartMIPS core. If
2445 you don't know you probably don't have SmartMIPS and should say N
2448 config CPU_MICROMIPS
2449 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2452 When this option is enabled the kernel will be built using the
2458 bool "Support for the MIPS SIMD Architecture"
2459 depends on CPU_SUPPORTS_MSA
2460 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2462 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2463 and a set of SIMD instructions to operate on them. When this option
2464 is enabled the kernel will support allocating & switching MSA
2465 vector register contexts. If you know that your kernel will only be
2466 running on CPUs which do not support MSA or that your userland will
2467 not be making use of it then you may wish to say N here to reduce
2468 the size & complexity of your kernel.
2481 config CPU_HAS_LOAD_STORE_LR
2484 CPU has support for unaligned load and store instructions:
2485 LWL, LWR, SWL, SWR (Load/store word left/right).
2486 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit systems).
2489 # Vectored interrupt mode is an R2 feature
2491 config CPU_MIPSR2_IRQ_VI
2495 # Extended interrupt mode is an R2 feature
2497 config CPU_MIPSR2_IRQ_EI
2502 depends on !CPU_R3000
2508 config CPU_DADDI_WORKAROUNDS
2511 config CPU_R4000_WORKAROUNDS
2513 select CPU_R4400_WORKAROUNDS
2515 config CPU_R4400_WORKAROUNDS
2518 config MIPS_ASID_SHIFT
2520 default 6 if CPU_R3000 || CPU_TX39XX
2521 default 4 if CPU_R8000
2524 config MIPS_ASID_BITS
2526 default 0 if MIPS_ASID_BITS_VARIABLE
2527 default 6 if CPU_R3000 || CPU_TX39XX
2530 config MIPS_ASID_BITS_VARIABLE
2533 config MIPS_CRC_SUPPORT
2537 # - Highmem only makes sense for the 32-bit kernel.
2538 # - The current highmem code will only work properly on physically indexed
2539 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2540 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2541 # moment we protect the user and offer the highmem option only on machines
2542 # where it's known to be safe. This will not offer highmem on a few systems
2543 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2544 # indexed CPUs but we're playing safe.
2545 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2546 # know they might have memory configurations that could make use of highmem
2550 bool "High Memory Support"
2551 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2553 config CPU_SUPPORTS_HIGHMEM
2556 config SYS_SUPPORTS_HIGHMEM
2559 config SYS_SUPPORTS_SMARTMIPS
2562 config SYS_SUPPORTS_MICROMIPS
2565 config SYS_SUPPORTS_MIPS16
2568 This option must be set if a kernel might be executed on a MIPS16-
2569 enabled CPU even if MIPS16 is not actually being used. In other
2570 words, it makes the kernel MIPS16-tolerant.
2572 config CPU_SUPPORTS_MSA
2575 config ARCH_FLATMEM_ENABLE
2577 depends on !NUMA && !CPU_LOONGSON2
2579 config ARCH_DISCONTIGMEM_ENABLE
2581 default y if SGI_IP27
2583 Say Y to support efficient handling of discontiguous physical memory,
2584 for architectures which are either NUMA (Non-Uniform Memory Access)
2585 or have huge holes in the physical address space for other reasons.
2586 See <file:Documentation/vm/numa.rst> for more.
2588 config ARCH_SPARSEMEM_ENABLE
2590 select SPARSEMEM_STATIC
2594 depends on SYS_SUPPORTS_NUMA
2596 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2597 Access). This option improves performance on systems with more
2598 than two nodes; on two node systems it is generally better to
2599 leave it disabled; on single node systems disable this option
2602 config SYS_SUPPORTS_NUMA
2606 bool "Relocatable kernel"
2607 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2609 This builds a kernel image that retains relocation information
2610 so it can be loaded someplace besides the default 1MB.
2611 The relocations make the kernel binary about 15% larger,
2612 but are discarded at runtime
2614 config RELOCATION_TABLE_SIZE
2615 hex "Relocation table size"
2616 depends on RELOCATABLE
2617 range 0x0 0x01000000
2618 default "0x00100000"
2620 A table of relocation data will be appended to the kernel binary
2621 and parsed at boot to fix up the relocated kernel.
2623 This option allows the amount of space reserved for the table to be
2624 adjusted, although the default of 1Mb should be ok in most cases.
2626 The build will fail and a valid size suggested if this is too small.
2628 If unsure, leave at the default value.
2630 config RANDOMIZE_BASE
2631 bool "Randomize the address of the kernel image"
2632 depends on RELOCATABLE
2634 Randomizes the physical and virtual address at which the
2635 kernel image is loaded, as a security feature that
2636 deters exploit attempts relying on knowledge of the location
2637 of kernel internals.
2639 Entropy is generated using any coprocessor 0 registers available.
2641 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2645 config RANDOMIZE_BASE_MAX_OFFSET
2646 hex "Maximum kASLR offset" if EXPERT
2647 depends on RANDOMIZE_BASE
2648 range 0x0 0x40000000 if EVA || 64BIT
2649 range 0x0 0x08000000
2650 default "0x01000000"
2652 When kASLR is active, this provides the maximum offset that will
2653 be applied to the kernel image. It should be set according to the
2654 amount of physical RAM available in the target system minus
2655 PHYSICAL_START and must be a power of 2.
2657 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2658 EVA or 64-bit. The default is 16Mb.
2663 depends on NEED_MULTIPLE_NODES
2665 config HW_PERF_EVENTS
2666 bool "Enable hardware performance counter support for perf events"
2667 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2670 Enable hardware performance counter support for perf events. If
2671 disabled, perf events will use software events only.
2674 bool "Multi-Processing support"
2675 depends on SYS_SUPPORTS_SMP
2677 This enables support for systems with more than one CPU. If you have
2678 a system with only one CPU, say N. If you have a system with more
2679 than one CPU, say Y.
2681 If you say N here, the kernel will run on uni- and multiprocessor
2682 machines, but will use only one CPU of a multiprocessor machine. If
2683 you say Y here, the kernel will run on many, but not all,
2684 uniprocessor machines. On a uniprocessor machine, the kernel
2685 will run faster if you say N here.
2687 People using multiprocessor machines who say Y here should also say
2688 Y to "Enhanced Real Time Clock Support", below.
2690 See also the SMP-HOWTO available at
2691 <http://www.tldp.org/docs.html#howto>.
2693 If you don't know what to do here, say N.
2696 bool "Support for hot-pluggable CPUs"
2697 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2699 Say Y here to allow turning CPUs off and on. CPUs can be
2700 controlled through /sys/devices/system/cpu.
2701 (Note: power management support will enable this option
2702 automatically on SMP systems. )
2703 Say N if you want to disable CPU hotplug.
2708 config SYS_SUPPORTS_MIPS_CMP
2711 config SYS_SUPPORTS_MIPS_CPS
2714 config SYS_SUPPORTS_SMP
2717 config NR_CPUS_DEFAULT_4
2720 config NR_CPUS_DEFAULT_8
2723 config NR_CPUS_DEFAULT_16
2726 config NR_CPUS_DEFAULT_32
2729 config NR_CPUS_DEFAULT_64
2733 int "Maximum number of CPUs (2-256)"
2736 default "4" if NR_CPUS_DEFAULT_4
2737 default "8" if NR_CPUS_DEFAULT_8
2738 default "16" if NR_CPUS_DEFAULT_16
2739 default "32" if NR_CPUS_DEFAULT_32
2740 default "64" if NR_CPUS_DEFAULT_64
2742 This allows you to specify the maximum number of CPUs which this
2743 kernel will support. The maximum supported value is 32 for 32-bit
2744 kernel and 64 for 64-bit kernels; the minimum value which makes
2745 sense is 1 for Qemu (useful only for kernel debugging purposes)
2746 and 2 for all others.
2748 This is purely to save memory - each supported CPU adds
2749 approximately eight kilobytes to the kernel image. For best
2750 performance should round up your number of processors to the next
2753 config MIPS_PERF_SHARED_TC_COUNTERS
2756 config MIPS_NR_CPU_NR_MAP_1024
2759 config MIPS_NR_CPU_NR_MAP
2762 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2763 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2766 # Timer Interrupt Frequency Configuration
2770 prompt "Timer frequency"
2773 Allows the configuration of the timer frequency.
2776 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2779 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2782 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2785 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2788 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2791 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2794 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2797 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2801 config SYS_SUPPORTS_24HZ
2804 config SYS_SUPPORTS_48HZ
2807 config SYS_SUPPORTS_100HZ
2810 config SYS_SUPPORTS_128HZ
2813 config SYS_SUPPORTS_250HZ
2816 config SYS_SUPPORTS_256HZ
2819 config SYS_SUPPORTS_1000HZ
2822 config SYS_SUPPORTS_1024HZ
2825 config SYS_SUPPORTS_ARBIT_HZ
2827 default y if !SYS_SUPPORTS_24HZ && \
2828 !SYS_SUPPORTS_48HZ && \
2829 !SYS_SUPPORTS_100HZ && \
2830 !SYS_SUPPORTS_128HZ && \
2831 !SYS_SUPPORTS_250HZ && \
2832 !SYS_SUPPORTS_256HZ && \
2833 !SYS_SUPPORTS_1000HZ && \
2834 !SYS_SUPPORTS_1024HZ
2840 default 100 if HZ_100
2841 default 128 if HZ_128
2842 default 250 if HZ_250
2843 default 256 if HZ_256
2844 default 1000 if HZ_1000
2845 default 1024 if HZ_1024
2848 def_bool HIGH_RES_TIMERS
2851 bool "Kexec system call"
2854 kexec is a system call that implements the ability to shutdown your
2855 current kernel, and to start another kernel. It is like a reboot
2856 but it is independent of the system firmware. And like a reboot
2857 you can start any kernel with it, not just Linux.
2859 The name comes from the similarity to the exec system call.
2861 It is an ongoing process to be certain the hardware in a machine
2862 is properly shutdown, so do not be surprised if this code does not
2863 initially work for you. As of this writing the exact hardware
2864 interface is strongly in flux, so no good recommendation can be
2868 bool "Kernel crash dumps"
2870 Generate crash dump after being started by kexec.
2871 This should be normally only set in special crash dump kernels
2872 which are loaded in the main kernel with kexec-tools into
2873 a specially reserved region and then later executed after
2874 a crash by kdump/kexec. The crash dump kernel must be compiled
2875 to a memory address not used by the main kernel or firmware using
2878 config PHYSICAL_START
2879 hex "Physical address where the kernel is loaded"
2880 default "0xffffffff84000000"
2881 depends on CRASH_DUMP
2883 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2884 If you plan to use kernel for capturing the crash dump change
2885 this value to start of the reserved region (the "X" value as
2886 specified in the "crashkernel=YM@XM" command line boot parameter
2887 passed to the panic-ed kernel).
2890 bool "Enable seccomp to safely compute untrusted bytecode"
2894 This kernel feature is useful for number crunching applications
2895 that may need to compute untrusted bytecode during their
2896 execution. By using pipes or other transports made available to
2897 the process as file descriptors supporting the read/write
2898 syscalls, it's possible to isolate those applications in
2899 their own address space using seccomp. Once seccomp is
2900 enabled via /proc/<pid>/seccomp, it cannot be disabled
2901 and the task is only allowed to execute a few safe syscalls
2902 defined by each seccomp mode.
2904 If unsure, say Y. Only embedded should say N here.
2906 config MIPS_O32_FP64_SUPPORT
2907 bool "Support for O32 binaries using 64-bit FP"
2908 depends on 32BIT || MIPS32_O32
2910 When this is enabled, the kernel will support use of 64-bit floating
2911 point registers with binaries using the O32 ABI along with the
2912 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2913 32-bit MIPS systems this support is at the cost of increasing the
2914 size and complexity of the compiled FPU emulator. Thus if you are
2915 running a MIPS32 system and know that none of your userland binaries
2916 will require 64-bit floating point, you may wish to reduce the size
2917 of your kernel & potentially improve FP emulation performance by
2920 Although binutils currently supports use of this flag the details
2921 concerning its effect upon the O32 ABI in userland are still being
2922 worked on. In order to avoid userland becoming dependant upon current
2923 behaviour before the details have been finalised, this option should
2924 be considered experimental and only enabled by those working upon
2932 select OF_EARLY_FLATTREE
2942 prompt "Kernel appended dtb support" if USE_OF
2943 default MIPS_NO_APPENDED_DTB
2945 config MIPS_NO_APPENDED_DTB
2948 Do not enable appended dtb support.
2950 config MIPS_ELF_APPENDED_DTB
2953 With this option, the boot code will look for a device tree binary
2954 DTB) included in the vmlinux ELF section .appended_dtb. By default
2955 it is empty and the DTB can be appended using binutils command
2958 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2960 This is meant as a backward compatiblity convenience for those
2961 systems with a bootloader that can't be upgraded to accommodate
2962 the documented boot protocol using a device tree.
2964 config MIPS_RAW_APPENDED_DTB
2965 bool "vmlinux.bin or vmlinuz.bin"
2967 With this option, the boot code will look for a device tree binary
2968 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2969 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2971 This is meant as a backward compatibility convenience for those
2972 systems with a bootloader that can't be upgraded to accommodate
2973 the documented boot protocol using a device tree.
2975 Beware that there is very little in terms of protection against
2976 this option being confused by leftover garbage in memory that might
2977 look like a DTB header after a reboot if no actual DTB is appended
2978 to vmlinux.bin. Do not leave this option active in a production kernel
2979 if you don't intend to always append a DTB.
2983 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2984 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2987 default MIPS_CMDLINE_FROM_BOOTLOADER
2989 config MIPS_CMDLINE_FROM_DTB
2991 bool "Dtb kernel arguments if available"
2993 config MIPS_CMDLINE_DTB_EXTEND
2995 bool "Extend dtb kernel arguments with bootloader arguments"
2997 config MIPS_CMDLINE_FROM_BOOTLOADER
2998 bool "Bootloader kernel arguments if available"
3000 config MIPS_CMDLINE_BUILTIN_EXTEND
3001 depends on CMDLINE_BOOL
3002 bool "Extend builtin kernel arguments with bootloader arguments"
3007 config LOCKDEP_SUPPORT
3011 config STACKTRACE_SUPPORT
3015 config HAVE_LATENCYTOP_SUPPORT
3019 config PGTABLE_LEVELS
3021 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3022 default 3 if 64BIT && !PAGE_SIZE_64KB
3025 config MIPS_AUTO_PFN_OFFSET
3028 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3036 bool "Support for PCI controller"
3037 depends on HW_HAS_PCI
3040 Find out whether you have a PCI motherboard. PCI is the name of a
3041 bus system, i.e. the way the CPU talks to the other stuff inside
3042 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
3046 bool "Support for HT-linked PCI"
3048 depends on CPU_LOONGSON3
3052 Loongson family machines use Hyper-Transport bus for inter-core
3053 connection and device connection. The PCI bus is a subordinate
3054 linked at HT. Choose Y for Loongson-3 based machines.
3059 config PCI_DOMAINS_GENERIC
3062 config PCI_DRIVERS_GENERIC
3063 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3066 config PCI_DRIVERS_LEGACY
3067 def_bool !PCI_DRIVERS_GENERIC
3068 select NO_GENERIC_PCI_IOPORT_MAP
3070 source "drivers/pci/Kconfig"
3073 # ISA support is now enabled via select. Too many systems still have the one
3074 # or other ISA chip on the board that users don't know about so don't expect
3075 # users to choose the right thing ...
3082 depends on HW_HAS_EISA
3084 select GENERIC_ISA_DMA
3086 The Extended Industry Standard Architecture (EISA) bus was
3087 developed as an open alternative to the IBM MicroChannel bus.
3089 The EISA bus provided some of the features of the IBM MicroChannel
3090 bus while maintaining backward compatibility with cards made for
3091 the older ISA bus. The EISA bus saw limited use between 1988 and
3092 1995 when it was made obsolete by the PCI bus.
3094 Say Y here if you are building a kernel for an EISA-based machine.
3098 source "drivers/eisa/Kconfig"
3101 bool "TURBOchannel support"
3102 depends on MACH_DECSTATION
3104 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3105 processors. TURBOchannel programming specifications are available
3107 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3109 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3110 Linux driver support status is documented at:
3111 <http://www.linux-mips.org/wiki/DECstation>
3117 config ARCH_MMAP_RND_BITS_MIN
3121 config ARCH_MMAP_RND_BITS_MAX
3125 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3128 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3135 select MIPS_EXTERNAL_TIMER
3143 source "drivers/pcmcia/Kconfig"
3150 tristate "RapidIO support"
3151 depends on HAS_RAPIDIO || PCI
3153 If you say Y here, the kernel will include drivers and
3154 infrastructure code to support RapidIO interconnect devices.
3156 source "drivers/rapidio/Kconfig"
3163 config MIPS32_COMPAT
3169 config SYSVIPC_COMPAT
3173 bool "Kernel support for o32 binaries"
3175 select ARCH_WANT_OLD_COMPAT_IPC
3177 select MIPS32_COMPAT
3178 select SYSVIPC_COMPAT if SYSVIPC
3180 Select this option if you want to run o32 binaries. These are pure
3181 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3182 existing binaries are in this format.
3187 bool "Kernel support for n32 binaries"
3190 select MIPS32_COMPAT
3191 select SYSVIPC_COMPAT if SYSVIPC
3193 Select this option if you want to run n32 binaries. These are
3194 64-bit binaries using 32-bit quantities for addressing and certain
3195 data that would normally be 64-bit. They are used in special
3202 default y if MIPS32_O32 || MIPS32_N32
3205 menu "Power management options"
3207 config ARCH_HIBERNATION_POSSIBLE
3209 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3211 config ARCH_SUSPEND_POSSIBLE
3213 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3215 source "kernel/power/Kconfig"
3219 config MIPS_EXTERNAL_TIMER
3222 menu "CPU Power Management"
3224 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3225 source "drivers/cpufreq/Kconfig"
3228 source "drivers/cpuidle/Kconfig"
3232 source "drivers/firmware/Kconfig"
3234 source "arch/mips/kvm/Kconfig"