1 # SPDX-License-Identifier: GPL-2.0
5 select ARCH_BINFMT_ELF_STATE
6 select ARCH_CLOCKSOURCE_DATA
7 select ARCH_DISCARD_MEMBLOCK
8 select ARCH_HAS_ELF_RANDOMIZE
9 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
10 select ARCH_SUPPORTS_UPROBES
11 select ARCH_USE_BUILTIN_BSWAP
12 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
13 select ARCH_USE_QUEUED_RWLOCKS
14 select ARCH_USE_QUEUED_SPINLOCKS
15 select ARCH_WANT_IPC_PARSE_VERSION
16 select BUILDTIME_EXTABLE_SORT
17 select CLONE_BACKWARDS
18 select CPU_PM if CPU_IDLE
20 select GENERIC_ATOMIC64 if !64BIT
21 select GENERIC_CLOCKEVENTS
22 select GENERIC_CMOS_UPDATE
23 select GENERIC_CPU_AUTOPROBE
24 select GENERIC_IRQ_PROBE
25 select GENERIC_IRQ_SHOW
26 select GENERIC_LIB_ASHLDI3
27 select GENERIC_LIB_ASHRDI3
28 select GENERIC_LIB_CMPDI2
29 select GENERIC_LIB_LSHRDI3
30 select GENERIC_LIB_UCMPDI2
31 select GENERIC_PCI_IOMAP
32 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
33 select GENERIC_SMP_IDLE_THREAD
34 select GENERIC_TIME_VSYSCALL
35 select HANDLE_DOMAIN_IRQ
36 select HAVE_ARCH_COMPILER_H
37 select HAVE_ARCH_JUMP_LABEL
39 select HAVE_ARCH_MMAP_RND_BITS if MMU
40 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
41 select HAVE_ARCH_SECCOMP_FILTER
42 select HAVE_ARCH_TRACEHOOK
43 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
44 select HAVE_CBPF_JIT if (!64BIT && !CPU_MICROMIPS)
45 select HAVE_EBPF_JIT if (64BIT && !CPU_MICROMIPS)
46 select HAVE_CONTEXT_TRACKING
47 select HAVE_COPY_THREAD_TLS
48 select HAVE_C_RECORDMCOUNT
49 select HAVE_DEBUG_KMEMLEAK
50 select HAVE_DEBUG_STACKOVERFLOW
51 select HAVE_DMA_CONTIGUOUS
52 select HAVE_DYNAMIC_FTRACE
53 select HAVE_EXIT_THREAD
54 select HAVE_FTRACE_MCOUNT_RECORD
55 select HAVE_FUNCTION_GRAPH_TRACER
56 select HAVE_FUNCTION_TRACER
57 select HAVE_GENERIC_DMA_COHERENT
59 select HAVE_IRQ_EXIT_ON_IRQ_STACK
60 select HAVE_IRQ_TIME_ACCOUNTING
62 select HAVE_KRETPROBES
64 select HAVE_MEMBLOCK_NODE_MAP
65 select HAVE_MOD_ARCH_SPECIFIC
68 select HAVE_PERF_EVENTS
69 select HAVE_REGS_AND_STACK_ACCESS_API
71 select HAVE_STACKPROTECTOR
72 select HAVE_SYSCALL_TRACEPOINTS
73 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
74 select IRQ_FORCED_THREADING
75 select MODULES_USE_ELF_RELA if MODULES && 64BIT
76 select MODULES_USE_ELF_REL if MODULES
77 select PERF_USE_VMALLOC
78 select RTC_LIB if !MACH_LOONGSON64
79 select SYSCTL_EXCEPTION_TRACE
82 menu "Machine selection"
89 bool "Generic board-agnostic MIPS kernel"
93 select CLKSRC_MIPS_GIC
95 select CPU_MIPSR2_IRQ_VI
96 select CPU_MIPSR2_IRQ_EI
98 select DMA_PERDEV_COHERENT
102 select MIPS_AUTO_PFN_OFFSET
103 select MIPS_CPU_SCACHE
105 select MIPS_L1_CACHE_SHIFT_7
106 select NO_EXCEPT_FILL
107 select PCI_DRIVERS_GENERIC
111 select SYS_HAS_CPU_MIPS32_R1
112 select SYS_HAS_CPU_MIPS32_R2
113 select SYS_HAS_CPU_MIPS32_R6
114 select SYS_HAS_CPU_MIPS64_R1
115 select SYS_HAS_CPU_MIPS64_R2
116 select SYS_HAS_CPU_MIPS64_R6
117 select SYS_SUPPORTS_32BIT_KERNEL
118 select SYS_SUPPORTS_64BIT_KERNEL
119 select SYS_SUPPORTS_BIG_ENDIAN
120 select SYS_SUPPORTS_HIGHMEM
121 select SYS_SUPPORTS_LITTLE_ENDIAN
122 select SYS_SUPPORTS_MICROMIPS
123 select SYS_SUPPORTS_MIPS_CPS
124 select SYS_SUPPORTS_MIPS16
125 select SYS_SUPPORTS_MULTITHREADING
126 select SYS_SUPPORTS_RELOCATABLE
127 select SYS_SUPPORTS_SMARTMIPS
128 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
129 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
130 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
131 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
132 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
133 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
136 Select this to build a kernel which aims to support multiple boards,
137 generally using a flattened device tree passed from the bootloader
138 using the boot protocol defined in the UHI (Unified Hosting
139 Interface) specification.
142 bool "Alchemy processor based machines"
143 select PHYS_ADDR_T_64BIT
147 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
148 select SYS_HAS_CPU_MIPS32_R1
149 select SYS_SUPPORTS_32BIT_KERNEL
150 select SYS_SUPPORTS_APM_EMULATION
152 select SYS_SUPPORTS_ZBOOT
156 bool "Texas Instruments AR7"
158 select DMA_NONCOHERENT
162 select NO_EXCEPT_FILL
164 select SYS_HAS_CPU_MIPS32_R1
165 select SYS_HAS_EARLY_PRINTK
166 select SYS_SUPPORTS_32BIT_KERNEL
167 select SYS_SUPPORTS_LITTLE_ENDIAN
168 select SYS_SUPPORTS_MIPS16
169 select SYS_SUPPORTS_ZBOOT_UART16550
174 Support for the Texas Instruments AR7 System-on-a-Chip
175 family: TNETD7100, 7200 and 7300.
178 bool "Atheros AR231x/AR531x SoC support"
181 select DMA_NONCOHERENT
184 select SYS_HAS_CPU_MIPS32_R1
185 select SYS_SUPPORTS_BIG_ENDIAN
186 select SYS_SUPPORTS_32BIT_KERNEL
187 select SYS_HAS_EARLY_PRINTK
189 Support for Atheros AR231x and Atheros AR531x based boards
192 bool "Atheros AR71XX/AR724X/AR913X based boards"
193 select ARCH_HAS_RESET_CONTROLLER
197 select DMA_NONCOHERENT
205 select SYS_HAS_CPU_MIPS32_R2
206 select SYS_HAS_EARLY_PRINTK
207 select SYS_SUPPORTS_32BIT_KERNEL
208 select SYS_SUPPORTS_BIG_ENDIAN
209 select SYS_SUPPORTS_MIPS16
210 select SYS_SUPPORTS_ZBOOT_UART_PROM
212 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
214 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
217 bool "Broadcom Generic BMIPS kernel"
218 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
219 select ARCH_HAS_PHYS_TO_DMA
221 select NO_EXCEPT_FILL
227 select BCM6345_L1_IRQ
228 select BCM7038_L1_IRQ
229 select BCM7120_L2_IRQ
230 select BRCMSTB_L2_IRQ
232 select DMA_NONCOHERENT
233 select SYS_SUPPORTS_32BIT_KERNEL
234 select SYS_SUPPORTS_LITTLE_ENDIAN
235 select SYS_SUPPORTS_BIG_ENDIAN
236 select SYS_SUPPORTS_HIGHMEM
237 select SYS_HAS_CPU_BMIPS32_3300
238 select SYS_HAS_CPU_BMIPS4350
239 select SYS_HAS_CPU_BMIPS4380
240 select SYS_HAS_CPU_BMIPS5000
242 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
243 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
244 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
245 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
246 select HARDIRQS_SW_RESEND
248 Build a generic DT-based kernel image that boots on select
249 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
250 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
251 must be set appropriately for your board.
254 bool "Broadcom BCM47XX based boards"
258 select DMA_NONCOHERENT
261 select SYS_HAS_CPU_MIPS32_R1
262 select NO_EXCEPT_FILL
263 select SYS_SUPPORTS_32BIT_KERNEL
264 select SYS_SUPPORTS_LITTLE_ENDIAN
265 select SYS_SUPPORTS_MIPS16
266 select SYS_SUPPORTS_ZBOOT
267 select SYS_HAS_EARLY_PRINTK
268 select USE_GENERIC_EARLY_PRINTK_8250
270 select LEDS_GPIO_REGISTER
273 select BCM47XX_SSB if !BCM47XX_BCMA
275 Support for BCM47XX based boards
278 bool "Broadcom BCM63XX based boards"
283 select DMA_NONCOHERENT
285 select SYS_SUPPORTS_32BIT_KERNEL
286 select SYS_SUPPORTS_BIG_ENDIAN
287 select SYS_HAS_EARLY_PRINTK
291 select MIPS_L1_CACHE_SHIFT_4
294 Support for BCM63XX based boards
301 select DMA_NONCOHERENT
307 select PCI_GT64XXX_PCI0
309 select SYS_HAS_CPU_NEVADA
310 select SYS_HAS_EARLY_PRINTK
311 select SYS_SUPPORTS_32BIT_KERNEL
312 select SYS_SUPPORTS_64BIT_KERNEL
313 select SYS_SUPPORTS_LITTLE_ENDIAN
314 select USE_GENERIC_EARLY_PRINTK_8250
316 config MACH_DECSTATION
320 select CEVT_R4K if CPU_R4X00
322 select CSRC_R4K if CPU_R4X00
323 select CPU_DADDI_WORKAROUNDS if 64BIT
324 select CPU_R4000_WORKAROUNDS if 64BIT
325 select CPU_R4400_WORKAROUNDS if 64BIT
326 select DMA_NONCOHERENT
329 select SYS_HAS_CPU_R3000
330 select SYS_HAS_CPU_R4X00
331 select SYS_SUPPORTS_32BIT_KERNEL
332 select SYS_SUPPORTS_64BIT_KERNEL
333 select SYS_SUPPORTS_LITTLE_ENDIAN
334 select SYS_SUPPORTS_128HZ
335 select SYS_SUPPORTS_256HZ
336 select SYS_SUPPORTS_1024HZ
337 select MIPS_L1_CACHE_SHIFT_4
339 This enables support for DEC's MIPS based workstations. For details
340 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
341 DECstation porting pages on <http://decstation.unix-ag.org/>.
343 If you have one of the following DECstation Models you definitely
344 want to choose R4xx0 for the CPU Type:
351 otherwise choose R3000.
354 bool "Jazz family of machines"
355 select ARCH_MIGHT_HAVE_PC_PARPORT
356 select ARCH_MIGHT_HAVE_PC_SERIO
359 select ARCH_MAY_HAVE_PC_FDC
362 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
363 select GENERIC_ISA_DMA
364 select HAVE_PCSPKR_PLATFORM
369 select SYS_HAS_CPU_R4X00
370 select SYS_SUPPORTS_32BIT_KERNEL
371 select SYS_SUPPORTS_64BIT_KERNEL
372 select SYS_SUPPORTS_100HZ
374 This a family of machines based on the MIPS R4030 chipset which was
375 used by several vendors to build RISC/os and Windows NT workstations.
376 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
377 Olivetti M700-10 workstations.
380 bool "Ingenic SoC based machines"
381 select SYS_SUPPORTS_32BIT_KERNEL
382 select SYS_SUPPORTS_LITTLE_ENDIAN
383 select SYS_SUPPORTS_ZBOOT_UART16550
384 select DMA_NONCOHERENT
389 select GENERIC_IRQ_CHIP
395 bool "Lantiq based platforms"
396 select DMA_NONCOHERENT
400 select SYS_HAS_CPU_MIPS32_R1
401 select SYS_HAS_CPU_MIPS32_R2
402 select SYS_SUPPORTS_BIG_ENDIAN
403 select SYS_SUPPORTS_32BIT_KERNEL
404 select SYS_SUPPORTS_MIPS16
405 select SYS_SUPPORTS_MULTITHREADING
406 select SYS_SUPPORTS_VPE_LOADER
407 select SYS_HAS_EARLY_PRINTK
414 select PINCTRL_LANTIQ
415 select ARCH_HAS_RESET_CONTROLLER
416 select RESET_CONTROLLER
419 bool "LASAT Networks platforms"
423 select DMA_NONCOHERENT
424 select SYS_HAS_EARLY_PRINTK
427 select PCI_GT64XXX_PCI0
429 select R5000_CPU_SCACHE
430 select SYS_HAS_CPU_R5000
431 select SYS_SUPPORTS_32BIT_KERNEL
432 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
433 select SYS_SUPPORTS_LITTLE_ENDIAN
435 config MACH_LOONGSON32
436 bool "Loongson-1 family of machines"
437 select SYS_SUPPORTS_ZBOOT
439 This enables support for the Loongson-1 family of machines.
441 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
442 the Institute of Computing Technology (ICT), Chinese Academy of
445 config MACH_LOONGSON64
446 bool "Loongson-2/3 family of machines"
447 select SYS_SUPPORTS_ZBOOT
449 This enables the support of Loongson-2/3 family of machines.
451 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
452 family of multi-core CPUs. They are both 64-bit general-purpose
453 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
454 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
455 in the People's Republic of China. The chief architect is Professor
458 config MACH_PISTACHIO
459 bool "IMG Pistachio SoC based boards"
463 select CLKSRC_MIPS_GIC
466 select DMA_NONCOHERENT
471 select MIPS_CPU_SCACHE
475 select SYS_HAS_CPU_MIPS32_R2
476 select SYS_SUPPORTS_32BIT_KERNEL
477 select SYS_SUPPORTS_LITTLE_ENDIAN
478 select SYS_SUPPORTS_MIPS_CPS
479 select SYS_SUPPORTS_MULTITHREADING
480 select SYS_SUPPORTS_RELOCATABLE
481 select SYS_SUPPORTS_ZBOOT
482 select SYS_HAS_EARLY_PRINTK
483 select USE_GENERIC_EARLY_PRINTK_8250
486 This enables support for the IMG Pistachio SoC platform.
489 bool "MIPS Malta board"
490 select ARCH_MAY_HAVE_PC_FDC
491 select ARCH_MIGHT_HAVE_PC_PARPORT
492 select ARCH_MIGHT_HAVE_PC_SERIO
498 select CLKSRC_MIPS_GIC
500 select DMA_MAYBE_COHERENT
501 select GENERIC_ISA_DMA
502 select HAVE_PCSPKR_PLATFORM
509 select MIPS_CPU_SCACHE
510 select MIPS_L1_CACHE_SHIFT_6
511 select PCI_GT64XXX_PCI0
515 select SYS_HAS_CPU_MIPS32_R1
516 select SYS_HAS_CPU_MIPS32_R2
517 select SYS_HAS_CPU_MIPS32_R3_5
518 select SYS_HAS_CPU_MIPS32_R5
519 select SYS_HAS_CPU_MIPS32_R6
520 select SYS_HAS_CPU_MIPS64_R1
521 select SYS_HAS_CPU_MIPS64_R2
522 select SYS_HAS_CPU_MIPS64_R6
523 select SYS_HAS_CPU_NEVADA
524 select SYS_HAS_CPU_RM7000
525 select SYS_SUPPORTS_32BIT_KERNEL
526 select SYS_SUPPORTS_64BIT_KERNEL
527 select SYS_SUPPORTS_BIG_ENDIAN
528 select SYS_SUPPORTS_HIGHMEM
529 select SYS_SUPPORTS_LITTLE_ENDIAN
530 select SYS_SUPPORTS_MICROMIPS
531 select SYS_SUPPORTS_MIPS_CMP
532 select SYS_SUPPORTS_MIPS_CPS
533 select SYS_SUPPORTS_MIPS16
534 select SYS_SUPPORTS_MULTITHREADING
535 select SYS_SUPPORTS_SMARTMIPS
536 select SYS_SUPPORTS_VPE_LOADER
537 select SYS_SUPPORTS_ZBOOT
538 select SYS_SUPPORTS_RELOCATABLE
541 select ZONE_DMA32 if 64BIT
545 This enables support for the MIPS Technologies Malta evaluation
549 bool "Microchip PIC32 Family"
551 This enables support for the Microchip PIC32 family of platforms.
553 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
557 bool "NEC EMMA2RH Mark-eins board"
561 This enables support for the NEC Electronics Mark-eins boards.
564 bool "NEC VR4100 series based machines"
567 select SYS_HAS_CPU_VR41XX
568 select SYS_SUPPORTS_MIPS16
572 bool "NXP STB220 board"
575 Support for NXP Semiconductors STB220 Development Board.
582 Support for NXP Semiconductors STB225 Development Board.
585 bool "PMC-Sierra MSP chipsets"
588 select DMA_NONCOHERENT
590 select NO_EXCEPT_FILL
592 select SYS_HAS_CPU_MIPS32_R1
593 select SYS_HAS_CPU_MIPS32_R2
594 select SYS_SUPPORTS_32BIT_KERNEL
595 select SYS_SUPPORTS_BIG_ENDIAN
596 select SYS_SUPPORTS_MIPS16
599 select SERIAL_8250_CONSOLE
600 select USB_EHCI_BIG_ENDIAN_MMIO
601 select USB_EHCI_BIG_ENDIAN_DESC
603 This adds support for the PMC-Sierra family of Multi-Service
604 Processor System-On-A-Chips. These parts include a number
605 of integrated peripherals, interfaces and DSPs in addition to
606 a variety of MIPS cores.
609 bool "Ralink based machines"
613 select DMA_NONCOHERENT
616 select SYS_HAS_CPU_MIPS32_R1
617 select SYS_HAS_CPU_MIPS32_R2
618 select SYS_SUPPORTS_32BIT_KERNEL
619 select SYS_SUPPORTS_LITTLE_ENDIAN
620 select SYS_SUPPORTS_MIPS16
621 select SYS_HAS_EARLY_PRINTK
623 select ARCH_HAS_RESET_CONTROLLER
624 select RESET_CONTROLLER
627 bool "SGI IP22 (Indy/Indigo2)"
630 select ARCH_MIGHT_HAVE_PC_SERIO
634 select DEFAULT_SGI_PARTITION
635 select DMA_NONCOHERENT
639 select IP22_CPU_SCACHE
641 select GENERIC_ISA_DMA_SUPPORT_BROKEN
643 select SGI_HAS_INDYDOG
649 select SYS_HAS_CPU_R4X00
650 select SYS_HAS_CPU_R5000
652 # Disable EARLY_PRINTK for now since it leads to overwritten prom
653 # memory during early boot on some machines.
655 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
656 # for a more details discussion
658 # select SYS_HAS_EARLY_PRINTK
659 select SYS_SUPPORTS_32BIT_KERNEL
660 select SYS_SUPPORTS_64BIT_KERNEL
661 select SYS_SUPPORTS_BIG_ENDIAN
662 select MIPS_L1_CACHE_SHIFT_7
664 This are the SGI Indy, Challenge S and Indigo2, as well as certain
665 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
666 that runs on these, say Y here.
669 bool "SGI IP27 (Origin200/2000)"
670 select ARCH_HAS_PHYS_TO_DMA
674 select DEFAULT_SGI_PARTITION
675 select SYS_HAS_EARLY_PRINTK
677 select NR_CPUS_DEFAULT_64
678 select SYS_HAS_CPU_R10000
679 select SYS_SUPPORTS_64BIT_KERNEL
680 select SYS_SUPPORTS_BIG_ENDIAN
681 select SYS_SUPPORTS_NUMA
682 select SYS_SUPPORTS_SMP
683 select MIPS_L1_CACHE_SHIFT_7
685 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
686 workstations. To compile a Linux kernel that runs on these, say Y
690 bool "SGI IP28 (Indigo2 R10k)"
693 select ARCH_MIGHT_HAVE_PC_SERIO
697 select DEFAULT_SGI_PARTITION
698 select DMA_NONCOHERENT
699 select GENERIC_ISA_DMA_SUPPORT_BROKEN
705 select SGI_HAS_INDYDOG
711 select SYS_HAS_CPU_R10000
713 # Disable EARLY_PRINTK for now since it leads to overwritten prom
714 # memory during early boot on some machines.
716 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
717 # for a more details discussion
719 # select SYS_HAS_EARLY_PRINTK
720 select SYS_SUPPORTS_64BIT_KERNEL
721 select SYS_SUPPORTS_BIG_ENDIAN
722 select MIPS_L1_CACHE_SHIFT_7
724 This is the SGI Indigo2 with R10000 processor. To compile a Linux
725 kernel that runs on these, say Y here.
729 select ARCH_HAS_PHYS_TO_DMA
735 select DMA_NONCOHERENT
738 select R5000_CPU_SCACHE
739 select RM7000_CPU_SCACHE
740 select SYS_HAS_CPU_R5000
741 select SYS_HAS_CPU_R10000 if BROKEN
742 select SYS_HAS_CPU_RM7000
743 select SYS_HAS_CPU_NEVADA
744 select SYS_SUPPORTS_64BIT_KERNEL
745 select SYS_SUPPORTS_BIG_ENDIAN
747 If you want this kernel to run on SGI O2 workstation, say Y here.
750 bool "Sibyte BCM91120C-CRhine"
752 select SIBYTE_BCM1120
754 select SYS_HAS_CPU_SB1
755 select SYS_SUPPORTS_BIG_ENDIAN
756 select SYS_SUPPORTS_LITTLE_ENDIAN
759 bool "Sibyte BCM91120x-Carmel"
761 select SIBYTE_BCM1120
763 select SYS_HAS_CPU_SB1
764 select SYS_SUPPORTS_BIG_ENDIAN
765 select SYS_SUPPORTS_LITTLE_ENDIAN
768 bool "Sibyte BCM91125C-CRhone"
770 select SIBYTE_BCM1125
772 select SYS_HAS_CPU_SB1
773 select SYS_SUPPORTS_BIG_ENDIAN
774 select SYS_SUPPORTS_HIGHMEM
775 select SYS_SUPPORTS_LITTLE_ENDIAN
778 bool "Sibyte BCM91125E-Rhone"
780 select SIBYTE_BCM1125H
782 select SYS_HAS_CPU_SB1
783 select SYS_SUPPORTS_BIG_ENDIAN
784 select SYS_SUPPORTS_LITTLE_ENDIAN
787 bool "Sibyte BCM91250A-SWARM"
789 select HAVE_PATA_PLATFORM
792 select SYS_HAS_CPU_SB1
793 select SYS_SUPPORTS_BIG_ENDIAN
794 select SYS_SUPPORTS_HIGHMEM
795 select SYS_SUPPORTS_LITTLE_ENDIAN
796 select ZONE_DMA32 if 64BIT
798 config SIBYTE_LITTLESUR
799 bool "Sibyte BCM91250C2-LittleSur"
801 select HAVE_PATA_PLATFORM
804 select SYS_HAS_CPU_SB1
805 select SYS_SUPPORTS_BIG_ENDIAN
806 select SYS_SUPPORTS_HIGHMEM
807 select SYS_SUPPORTS_LITTLE_ENDIAN
809 config SIBYTE_SENTOSA
810 bool "Sibyte BCM91250E-Sentosa"
814 select SYS_HAS_CPU_SB1
815 select SYS_SUPPORTS_BIG_ENDIAN
816 select SYS_SUPPORTS_LITTLE_ENDIAN
819 bool "Sibyte BCM91480B-BigSur"
821 select NR_CPUS_DEFAULT_4
822 select SIBYTE_BCM1x80
824 select SYS_HAS_CPU_SB1
825 select SYS_SUPPORTS_BIG_ENDIAN
826 select SYS_SUPPORTS_HIGHMEM
827 select SYS_SUPPORTS_LITTLE_ENDIAN
828 select ZONE_DMA32 if 64BIT
831 bool "SNI RM200/300/400"
832 select FW_ARC if CPU_LITTLE_ENDIAN
833 select FW_ARC32 if CPU_LITTLE_ENDIAN
834 select FW_SNIPROM if CPU_BIG_ENDIAN
835 select ARCH_MAY_HAVE_PC_FDC
836 select ARCH_MIGHT_HAVE_PC_PARPORT
837 select ARCH_MIGHT_HAVE_PC_SERIO
841 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
842 select DMA_NONCOHERENT
843 select GENERIC_ISA_DMA
844 select HAVE_PCSPKR_PLATFORM
851 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
852 select SYS_HAS_CPU_R4X00
853 select SYS_HAS_CPU_R5000
854 select SYS_HAS_CPU_R10000
855 select R5000_CPU_SCACHE
856 select SYS_HAS_EARLY_PRINTK
857 select SYS_SUPPORTS_32BIT_KERNEL
858 select SYS_SUPPORTS_64BIT_KERNEL
859 select SYS_SUPPORTS_BIG_ENDIAN
860 select SYS_SUPPORTS_HIGHMEM
861 select SYS_SUPPORTS_LITTLE_ENDIAN
863 The SNI RM200/300/400 are MIPS-based machines manufactured by
864 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
865 Technology and now in turn merged with Fujitsu. Say Y here to
866 support this machine type.
869 bool "Toshiba TX39 series based machines"
872 bool "Toshiba TX49 series based machines"
874 config MIKROTIK_RB532
875 bool "Mikrotik RB532 boards"
878 select DMA_NONCOHERENT
881 select SYS_HAS_CPU_MIPS32_R1
882 select SYS_SUPPORTS_32BIT_KERNEL
883 select SYS_SUPPORTS_LITTLE_ENDIAN
887 select MIPS_L1_CACHE_SHIFT_4
889 Support the Mikrotik(tm) RouterBoard 532 series,
890 based on the IDT RC32434 SoC.
892 config CAVIUM_OCTEON_SOC
893 bool "Cavium Networks Octeon SoC based boards"
895 select ARCH_HAS_PHYS_TO_DMA
897 select PHYS_ADDR_T_64BIT
898 select SYS_SUPPORTS_64BIT_KERNEL
899 select SYS_SUPPORTS_BIG_ENDIAN
901 select EDAC_ATOMIC_SCRUB
902 select SYS_SUPPORTS_LITTLE_ENDIAN
903 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
904 select SYS_HAS_EARLY_PRINTK
905 select SYS_HAS_CPU_CAVIUM_OCTEON
912 select ARCH_SPARSEMEM_ENABLE
913 select SYS_SUPPORTS_SMP
914 select NR_CPUS_DEFAULT_64
915 select MIPS_NR_CPU_NR_MAP_1024
917 select MTD_COMPLEX_MAPPINGS
919 select SYS_SUPPORTS_RELOCATABLE
921 This option supports all of the Octeon reference boards from Cavium
922 Networks. It builds a kernel that dynamically determines the Octeon
923 CPU type and supports all known board reference implementations.
924 Some of the supported boards are:
931 Say Y here for most Octeon reference boards.
934 bool "Netlogic XLR/XLS based systems"
937 select SYS_HAS_CPU_XLR
938 select SYS_SUPPORTS_SMP
941 select SYS_SUPPORTS_32BIT_KERNEL
942 select SYS_SUPPORTS_64BIT_KERNEL
943 select PHYS_ADDR_T_64BIT
944 select SYS_SUPPORTS_BIG_ENDIAN
945 select SYS_SUPPORTS_HIGHMEM
946 select NR_CPUS_DEFAULT_32
950 select ZONE_DMA32 if 64BIT
952 select SYS_HAS_EARLY_PRINTK
953 select SYS_SUPPORTS_ZBOOT
954 select SYS_SUPPORTS_ZBOOT_UART16550
956 Support for systems based on Netlogic XLR and XLS processors.
957 Say Y here if you have a XLR or XLS based board.
960 bool "Netlogic XLP based systems"
963 select SYS_HAS_CPU_XLP
964 select SYS_SUPPORTS_SMP
966 select SYS_SUPPORTS_32BIT_KERNEL
967 select SYS_SUPPORTS_64BIT_KERNEL
968 select PHYS_ADDR_T_64BIT
970 select SYS_SUPPORTS_BIG_ENDIAN
971 select SYS_SUPPORTS_LITTLE_ENDIAN
972 select SYS_SUPPORTS_HIGHMEM
973 select NR_CPUS_DEFAULT_32
977 select ZONE_DMA32 if 64BIT
979 select SYS_HAS_EARLY_PRINTK
981 select SYS_SUPPORTS_ZBOOT
982 select SYS_SUPPORTS_ZBOOT_UART16550
984 This board is based on Netlogic XLP Processor.
985 Say Y here if you have a XLP based board.
988 bool "Para-Virtualized guest system"
991 select SYS_SUPPORTS_64BIT_KERNEL
992 select SYS_SUPPORTS_32BIT_KERNEL
993 select SYS_SUPPORTS_BIG_ENDIAN
994 select SYS_SUPPORTS_SMP
995 select NR_CPUS_DEFAULT_4
996 select SYS_HAS_EARLY_PRINTK
997 select SYS_HAS_CPU_MIPS32_R2
998 select SYS_HAS_CPU_MIPS64_R2
999 select SYS_HAS_CPU_CAVIUM_OCTEON
1001 select SWAP_IO_SPACE
1003 This option supports guest running under ????
1007 source "arch/mips/alchemy/Kconfig"
1008 source "arch/mips/ath25/Kconfig"
1009 source "arch/mips/ath79/Kconfig"
1010 source "arch/mips/bcm47xx/Kconfig"
1011 source "arch/mips/bcm63xx/Kconfig"
1012 source "arch/mips/bmips/Kconfig"
1013 source "arch/mips/generic/Kconfig"
1014 source "arch/mips/jazz/Kconfig"
1015 source "arch/mips/jz4740/Kconfig"
1016 source "arch/mips/lantiq/Kconfig"
1017 source "arch/mips/lasat/Kconfig"
1018 source "arch/mips/pic32/Kconfig"
1019 source "arch/mips/pistachio/Kconfig"
1020 source "arch/mips/pmcs-msp71xx/Kconfig"
1021 source "arch/mips/ralink/Kconfig"
1022 source "arch/mips/sgi-ip27/Kconfig"
1023 source "arch/mips/sibyte/Kconfig"
1024 source "arch/mips/txx9/Kconfig"
1025 source "arch/mips/vr41xx/Kconfig"
1026 source "arch/mips/cavium-octeon/Kconfig"
1027 source "arch/mips/loongson32/Kconfig"
1028 source "arch/mips/loongson64/Kconfig"
1029 source "arch/mips/netlogic/Kconfig"
1030 source "arch/mips/paravirt/Kconfig"
1034 config RWSEM_GENERIC_SPINLOCK
1038 config RWSEM_XCHGADD_ALGORITHM
1041 config GENERIC_HWEIGHT
1045 config GENERIC_CALIBRATE_DELAY
1049 config SCHED_OMIT_FRAME_POINTER
1054 # Select some configuration options automatically based on user selections.
1059 config ARCH_MAY_HAVE_PC_FDC
1095 config MIPS_CLOCK_VSYSCALL
1096 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1105 config ARCH_SUPPORTS_UPROBES
1108 config DMA_MAYBE_COHERENT
1109 select ARCH_HAS_DMA_COHERENCE_H
1110 select DMA_NONCOHERENT
1113 config DMA_PERDEV_COHERENT
1115 select DMA_NONCOHERENT
1117 config DMA_NONCOHERENT
1119 select ARCH_HAS_DMA_MMAP_PGPROT
1120 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1121 select ARCH_HAS_SYNC_DMA_FOR_CPU
1122 select NEED_DMA_MAP_STATE
1123 select ARCH_HAS_DMA_COHERENT_TO_PFN
1124 select DMA_NONCOHERENT_CACHE_SYNC
1126 config SYS_HAS_EARLY_PRINTK
1129 config SYS_SUPPORTS_HOTPLUG_CPU
1132 config MIPS_BONITO64
1147 config NO_IOPORT_MAP
1153 config GENERIC_ISA_DMA
1155 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1158 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1160 select GENERIC_ISA_DMA
1165 config HOLES_IN_ZONE
1168 config SYS_SUPPORTS_RELOCATABLE
1171 Selected if the platform supports relocating the kernel.
1172 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1173 to allow access to command line and entropy sources.
1175 config MIPS_CBPF_JIT
1177 depends on BPF_JIT && HAVE_CBPF_JIT
1179 config MIPS_EBPF_JIT
1181 depends on BPF_JIT && HAVE_EBPF_JIT
1185 # Endianness selection. Sufficiently obscure so many users don't know what to
1186 # answer,so we try hard to limit the available choices. Also the use of a
1187 # choice statement should be more obvious to the user.
1190 prompt "Endianness selection"
1192 Some MIPS machines can be configured for either little or big endian
1193 byte order. These modes require different kernels and a different
1194 Linux distribution. In general there is one preferred byteorder for a
1195 particular system but some systems are just as commonly used in the
1196 one or the other endianness.
1198 config CPU_BIG_ENDIAN
1200 depends on SYS_SUPPORTS_BIG_ENDIAN
1202 config CPU_LITTLE_ENDIAN
1203 bool "Little endian"
1204 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1211 config SYS_SUPPORTS_APM_EMULATION
1214 config SYS_SUPPORTS_BIG_ENDIAN
1217 config SYS_SUPPORTS_LITTLE_ENDIAN
1220 config SYS_SUPPORTS_HUGETLBFS
1222 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1225 config MIPS_HUGE_TLB_SUPPORT
1226 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1243 config PCI_GT64XXX_PCI0
1246 config NO_EXCEPT_FILL
1253 select DMA_NONCOHERENT
1255 select SWAP_IO_SPACE
1256 select SYS_HAS_CPU_R5500
1257 select SYS_SUPPORTS_32BIT_KERNEL
1258 select SYS_SUPPORTS_64BIT_KERNEL
1259 select SYS_SUPPORTS_BIG_ENDIAN
1266 select DMA_NONCOHERENT
1267 select SYS_HAS_CPU_MIPS32_R2
1268 select SYS_SUPPORTS_32BIT_KERNEL
1269 select SYS_SUPPORTS_LITTLE_ENDIAN
1270 select SYS_SUPPORTS_BIG_ENDIAN
1271 select SYS_SUPPORTS_MIPS16
1272 select CPU_MIPSR2_IRQ_VI
1281 config SWAP_IO_SPACE
1284 config SGI_HAS_INDYDOG
1296 config SGI_HAS_ZILOG
1299 config SGI_HAS_I8042
1302 config DEFAULT_SGI_PARTITION
1314 config MIPS_L1_CACHE_SHIFT_4
1317 config MIPS_L1_CACHE_SHIFT_5
1320 config MIPS_L1_CACHE_SHIFT_6
1323 config MIPS_L1_CACHE_SHIFT_7
1326 config MIPS_L1_CACHE_SHIFT
1328 default "7" if MIPS_L1_CACHE_SHIFT_7
1329 default "6" if MIPS_L1_CACHE_SHIFT_6
1330 default "5" if MIPS_L1_CACHE_SHIFT_5
1331 default "4" if MIPS_L1_CACHE_SHIFT_4
1334 config HAVE_STD_PC_SERIAL_PORT
1338 bool "ARC console support"
1339 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1343 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1348 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1357 menu "CPU selection"
1363 config CPU_LOONGSON3
1364 bool "Loongson 3 CPU"
1365 depends on SYS_HAS_CPU_LOONGSON3
1366 select ARCH_HAS_PHYS_TO_DMA
1367 select CPU_SUPPORTS_64BIT_KERNEL
1368 select CPU_SUPPORTS_HIGHMEM
1369 select CPU_SUPPORTS_HUGEPAGES
1370 select WEAK_ORDERING
1371 select WEAK_REORDERING_BEYOND_LLSC
1372 select MIPS_PGD_C0_CONTEXT
1373 select MIPS_L1_CACHE_SHIFT_6
1377 The Loongson 3 processor implements the MIPS64R2 instruction
1378 set with many extensions.
1380 config LOONGSON3_ENHANCEMENT
1381 bool "New Loongson 3 CPU Enhancements"
1384 select CPU_HAS_PREFETCH
1385 depends on CPU_LOONGSON3
1387 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1388 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1389 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1390 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1391 Fast TLB refill support, etc.
1393 This option enable those enhancements which are not probed at run
1394 time. If you want a generic kernel to run on all Loongson 3 machines,
1395 please say 'N' here. If you want a high-performance kernel to run on
1396 new Loongson 3 machines only, please say 'Y' here.
1398 config CPU_LOONGSON2E
1400 depends on SYS_HAS_CPU_LOONGSON2E
1401 select CPU_LOONGSON2
1403 The Loongson 2E processor implements the MIPS III instruction set
1404 with many extensions.
1406 It has an internal FPGA northbridge, which is compatible to
1409 config CPU_LOONGSON2F
1411 depends on SYS_HAS_CPU_LOONGSON2F
1412 select CPU_LOONGSON2
1415 The Loongson 2F processor implements the MIPS III instruction set
1416 with many extensions.
1418 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1419 have a similar programming interface with FPGA northbridge used in
1422 config CPU_LOONGSON1B
1424 depends on SYS_HAS_CPU_LOONGSON1B
1425 select CPU_LOONGSON1
1426 select LEDS_GPIO_REGISTER
1428 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1429 Release 1 instruction set and part of the MIPS32 Release 2
1432 config CPU_LOONGSON1C
1434 depends on SYS_HAS_CPU_LOONGSON1C
1435 select CPU_LOONGSON1
1436 select LEDS_GPIO_REGISTER
1438 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1439 Release 1 instruction set and part of the MIPS32 Release 2
1442 config CPU_MIPS32_R1
1443 bool "MIPS32 Release 1"
1444 depends on SYS_HAS_CPU_MIPS32_R1
1445 select CPU_HAS_PREFETCH
1446 select CPU_SUPPORTS_32BIT_KERNEL
1447 select CPU_SUPPORTS_HIGHMEM
1449 Choose this option to build a kernel for release 1 or later of the
1450 MIPS32 architecture. Most modern embedded systems with a 32-bit
1451 MIPS processor are based on a MIPS32 processor. If you know the
1452 specific type of processor in your system, choose those that one
1453 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1454 Release 2 of the MIPS32 architecture is available since several
1455 years so chances are you even have a MIPS32 Release 2 processor
1456 in which case you should choose CPU_MIPS32_R2 instead for better
1459 config CPU_MIPS32_R2
1460 bool "MIPS32 Release 2"
1461 depends on SYS_HAS_CPU_MIPS32_R2
1462 select CPU_HAS_PREFETCH
1463 select CPU_SUPPORTS_32BIT_KERNEL
1464 select CPU_SUPPORTS_HIGHMEM
1465 select CPU_SUPPORTS_MSA
1468 Choose this option to build a kernel for release 2 or later of the
1469 MIPS32 architecture. Most modern embedded systems with a 32-bit
1470 MIPS processor are based on a MIPS32 processor. If you know the
1471 specific type of processor in your system, choose those that one
1472 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1474 config CPU_MIPS32_R6
1475 bool "MIPS32 Release 6"
1476 depends on SYS_HAS_CPU_MIPS32_R6
1477 select CPU_HAS_PREFETCH
1478 select CPU_SUPPORTS_32BIT_KERNEL
1479 select CPU_SUPPORTS_HIGHMEM
1480 select CPU_SUPPORTS_MSA
1483 select MIPS_O32_FP64_SUPPORT
1485 Choose this option to build a kernel for release 6 or later of the
1486 MIPS32 architecture. New MIPS processors, starting with the Warrior
1487 family, are based on a MIPS32r6 processor. If you own an older
1488 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1490 config CPU_MIPS64_R1
1491 bool "MIPS64 Release 1"
1492 depends on SYS_HAS_CPU_MIPS64_R1
1493 select CPU_HAS_PREFETCH
1494 select CPU_SUPPORTS_32BIT_KERNEL
1495 select CPU_SUPPORTS_64BIT_KERNEL
1496 select CPU_SUPPORTS_HIGHMEM
1497 select CPU_SUPPORTS_HUGEPAGES
1499 Choose this option to build a kernel for release 1 or later of the
1500 MIPS64 architecture. Many modern embedded systems with a 64-bit
1501 MIPS processor are based on a MIPS64 processor. If you know the
1502 specific type of processor in your system, choose those that one
1503 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1504 Release 2 of the MIPS64 architecture is available since several
1505 years so chances are you even have a MIPS64 Release 2 processor
1506 in which case you should choose CPU_MIPS64_R2 instead for better
1509 config CPU_MIPS64_R2
1510 bool "MIPS64 Release 2"
1511 depends on SYS_HAS_CPU_MIPS64_R2
1512 select CPU_HAS_PREFETCH
1513 select CPU_SUPPORTS_32BIT_KERNEL
1514 select CPU_SUPPORTS_64BIT_KERNEL
1515 select CPU_SUPPORTS_HIGHMEM
1516 select CPU_SUPPORTS_HUGEPAGES
1517 select CPU_SUPPORTS_MSA
1520 Choose this option to build a kernel for release 2 or later of the
1521 MIPS64 architecture. Many modern embedded systems with a 64-bit
1522 MIPS processor are based on a MIPS64 processor. If you know the
1523 specific type of processor in your system, choose those that one
1524 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1526 config CPU_MIPS64_R6
1527 bool "MIPS64 Release 6"
1528 depends on SYS_HAS_CPU_MIPS64_R6
1529 select CPU_HAS_PREFETCH
1530 select CPU_SUPPORTS_32BIT_KERNEL
1531 select CPU_SUPPORTS_64BIT_KERNEL
1532 select CPU_SUPPORTS_HIGHMEM
1533 select CPU_SUPPORTS_MSA
1535 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1538 Choose this option to build a kernel for release 6 or later of the
1539 MIPS64 architecture. New MIPS processors, starting with the Warrior
1540 family, are based on a MIPS64r6 processor. If you own an older
1541 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1545 depends on SYS_HAS_CPU_R3000
1547 select CPU_SUPPORTS_32BIT_KERNEL
1548 select CPU_SUPPORTS_HIGHMEM
1550 Please make sure to pick the right CPU type. Linux/MIPS is not
1551 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1552 *not* work on R4000 machines and vice versa. However, since most
1553 of the supported machines have an R4000 (or similar) CPU, R4x00
1554 might be a safe bet. If the resulting kernel does not work,
1555 try to recompile with R3000.
1559 depends on SYS_HAS_CPU_TX39XX
1560 select CPU_SUPPORTS_32BIT_KERNEL
1564 depends on SYS_HAS_CPU_VR41XX
1565 select CPU_SUPPORTS_32BIT_KERNEL
1566 select CPU_SUPPORTS_64BIT_KERNEL
1568 The options selects support for the NEC VR4100 series of processors.
1569 Only choose this option if you have one of these processors as a
1570 kernel built with this option will not run on any other type of
1571 processor or vice versa.
1575 depends on SYS_HAS_CPU_R4300
1576 select CPU_SUPPORTS_32BIT_KERNEL
1577 select CPU_SUPPORTS_64BIT_KERNEL
1579 MIPS Technologies R4300-series processors.
1583 depends on SYS_HAS_CPU_R4X00
1584 select CPU_SUPPORTS_32BIT_KERNEL
1585 select CPU_SUPPORTS_64BIT_KERNEL
1586 select CPU_SUPPORTS_HUGEPAGES
1588 MIPS Technologies R4000-series processors other than 4300, including
1589 the R4000, R4400, R4600, and 4700.
1593 depends on SYS_HAS_CPU_TX49XX
1594 select CPU_HAS_PREFETCH
1595 select CPU_SUPPORTS_32BIT_KERNEL
1596 select CPU_SUPPORTS_64BIT_KERNEL
1597 select CPU_SUPPORTS_HUGEPAGES
1601 depends on SYS_HAS_CPU_R5000
1602 select CPU_SUPPORTS_32BIT_KERNEL
1603 select CPU_SUPPORTS_64BIT_KERNEL
1604 select CPU_SUPPORTS_HUGEPAGES
1606 MIPS Technologies R5000-series processors other than the Nevada.
1610 depends on SYS_HAS_CPU_R5432
1611 select CPU_SUPPORTS_32BIT_KERNEL
1612 select CPU_SUPPORTS_64BIT_KERNEL
1613 select CPU_SUPPORTS_HUGEPAGES
1617 depends on SYS_HAS_CPU_R5500
1618 select CPU_SUPPORTS_32BIT_KERNEL
1619 select CPU_SUPPORTS_64BIT_KERNEL
1620 select CPU_SUPPORTS_HUGEPAGES
1622 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1627 depends on SYS_HAS_CPU_NEVADA
1628 select CPU_SUPPORTS_32BIT_KERNEL
1629 select CPU_SUPPORTS_64BIT_KERNEL
1630 select CPU_SUPPORTS_HUGEPAGES
1632 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1636 depends on SYS_HAS_CPU_R8000
1637 select CPU_HAS_PREFETCH
1638 select CPU_SUPPORTS_64BIT_KERNEL
1640 MIPS Technologies R8000 processors. Note these processors are
1641 uncommon and the support for them is incomplete.
1645 depends on SYS_HAS_CPU_R10000
1646 select CPU_HAS_PREFETCH
1647 select CPU_SUPPORTS_32BIT_KERNEL
1648 select CPU_SUPPORTS_64BIT_KERNEL
1649 select CPU_SUPPORTS_HIGHMEM
1650 select CPU_SUPPORTS_HUGEPAGES
1652 MIPS Technologies R10000-series processors.
1656 depends on SYS_HAS_CPU_RM7000
1657 select CPU_HAS_PREFETCH
1658 select CPU_SUPPORTS_32BIT_KERNEL
1659 select CPU_SUPPORTS_64BIT_KERNEL
1660 select CPU_SUPPORTS_HIGHMEM
1661 select CPU_SUPPORTS_HUGEPAGES
1665 depends on SYS_HAS_CPU_SB1
1666 select CPU_SUPPORTS_32BIT_KERNEL
1667 select CPU_SUPPORTS_64BIT_KERNEL
1668 select CPU_SUPPORTS_HIGHMEM
1669 select CPU_SUPPORTS_HUGEPAGES
1670 select WEAK_ORDERING
1672 config CPU_CAVIUM_OCTEON
1673 bool "Cavium Octeon processor"
1674 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1675 select CPU_HAS_PREFETCH
1676 select CPU_SUPPORTS_64BIT_KERNEL
1677 select WEAK_ORDERING
1678 select CPU_SUPPORTS_HIGHMEM
1679 select CPU_SUPPORTS_HUGEPAGES
1680 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1681 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1682 select MIPS_L1_CACHE_SHIFT_7
1685 The Cavium Octeon processor is a highly integrated chip containing
1686 many ethernet hardware widgets for networking tasks. The processor
1687 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1688 Full details can be found at http://www.caviumnetworks.com.
1691 bool "Broadcom BMIPS"
1692 depends on SYS_HAS_CPU_BMIPS
1694 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1695 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1696 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1697 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1698 select CPU_SUPPORTS_32BIT_KERNEL
1699 select DMA_NONCOHERENT
1701 select SWAP_IO_SPACE
1702 select WEAK_ORDERING
1703 select CPU_SUPPORTS_HIGHMEM
1704 select CPU_HAS_PREFETCH
1705 select CPU_SUPPORTS_CPUFREQ
1706 select MIPS_EXTERNAL_TIMER
1708 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1711 bool "Netlogic XLR SoC"
1712 depends on SYS_HAS_CPU_XLR
1713 select CPU_SUPPORTS_32BIT_KERNEL
1714 select CPU_SUPPORTS_64BIT_KERNEL
1715 select CPU_SUPPORTS_HIGHMEM
1716 select CPU_SUPPORTS_HUGEPAGES
1717 select WEAK_ORDERING
1718 select WEAK_REORDERING_BEYOND_LLSC
1720 Netlogic Microsystems XLR/XLS processors.
1723 bool "Netlogic XLP SoC"
1724 depends on SYS_HAS_CPU_XLP
1725 select CPU_SUPPORTS_32BIT_KERNEL
1726 select CPU_SUPPORTS_64BIT_KERNEL
1727 select CPU_SUPPORTS_HIGHMEM
1728 select WEAK_ORDERING
1729 select WEAK_REORDERING_BEYOND_LLSC
1730 select CPU_HAS_PREFETCH
1732 select CPU_SUPPORTS_HUGEPAGES
1733 select MIPS_ASID_BITS_VARIABLE
1735 Netlogic Microsystems XLP processors.
1738 config CPU_MIPS32_3_5_FEATURES
1739 bool "MIPS32 Release 3.5 Features"
1740 depends on SYS_HAS_CPU_MIPS32_R3_5
1741 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1743 Choose this option to build a kernel for release 2 or later of the
1744 MIPS32 architecture including features from the 3.5 release such as
1745 support for Enhanced Virtual Addressing (EVA).
1747 config CPU_MIPS32_3_5_EVA
1748 bool "Enhanced Virtual Addressing (EVA)"
1749 depends on CPU_MIPS32_3_5_FEATURES
1753 Choose this option if you want to enable the Enhanced Virtual
1754 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1755 One of its primary benefits is an increase in the maximum size
1756 of lowmem (up to 3GB). If unsure, say 'N' here.
1758 config CPU_MIPS32_R5_FEATURES
1759 bool "MIPS32 Release 5 Features"
1760 depends on SYS_HAS_CPU_MIPS32_R5
1761 depends on CPU_MIPS32_R2
1763 Choose this option to build a kernel for release 2 or later of the
1764 MIPS32 architecture including features from release 5 such as
1765 support for Extended Physical Addressing (XPA).
1767 config CPU_MIPS32_R5_XPA
1768 bool "Extended Physical Addressing (XPA)"
1769 depends on CPU_MIPS32_R5_FEATURES
1771 depends on !PAGE_SIZE_4KB
1772 depends on SYS_SUPPORTS_HIGHMEM
1775 select PHYS_ADDR_T_64BIT
1778 Choose this option if you want to enable the Extended Physical
1779 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1780 benefit is to increase physical addressing equal to or greater
1781 than 40 bits. Note that this has the side effect of turning on
1782 64-bit addressing which in turn makes the PTEs 64-bit in size.
1783 If unsure, say 'N' here.
1786 config CPU_NOP_WORKAROUNDS
1789 config CPU_JUMP_WORKAROUNDS
1792 config CPU_LOONGSON2F_WORKAROUNDS
1793 bool "Loongson 2F Workarounds"
1795 select CPU_NOP_WORKAROUNDS
1796 select CPU_JUMP_WORKAROUNDS
1798 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1799 require workarounds. Without workarounds the system may hang
1800 unexpectedly. For more information please refer to the gas
1801 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1803 Loongson 2F03 and later have fixed these issues and no workarounds
1804 are needed. The workarounds have no significant side effect on them
1805 but may decrease the performance of the system so this option should
1806 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1809 If unsure, please say Y.
1810 endif # CPU_LOONGSON2F
1812 config SYS_SUPPORTS_ZBOOT
1814 select HAVE_KERNEL_GZIP
1815 select HAVE_KERNEL_BZIP2
1816 select HAVE_KERNEL_LZ4
1817 select HAVE_KERNEL_LZMA
1818 select HAVE_KERNEL_LZO
1819 select HAVE_KERNEL_XZ
1821 config SYS_SUPPORTS_ZBOOT_UART16550
1823 select SYS_SUPPORTS_ZBOOT
1825 config SYS_SUPPORTS_ZBOOT_UART_PROM
1827 select SYS_SUPPORTS_ZBOOT
1829 config CPU_LOONGSON2
1831 select CPU_SUPPORTS_32BIT_KERNEL
1832 select CPU_SUPPORTS_64BIT_KERNEL
1833 select CPU_SUPPORTS_HIGHMEM
1834 select CPU_SUPPORTS_HUGEPAGES
1835 select ARCH_HAS_PHYS_TO_DMA
1837 config CPU_LOONGSON1
1841 select CPU_HAS_PREFETCH
1842 select CPU_SUPPORTS_32BIT_KERNEL
1843 select CPU_SUPPORTS_HIGHMEM
1844 select CPU_SUPPORTS_CPUFREQ
1846 config CPU_BMIPS32_3300
1847 select SMP_UP if SMP
1850 config CPU_BMIPS4350
1852 select SYS_SUPPORTS_SMP
1853 select SYS_SUPPORTS_HOTPLUG_CPU
1855 config CPU_BMIPS4380
1857 select MIPS_L1_CACHE_SHIFT_6
1858 select SYS_SUPPORTS_SMP
1859 select SYS_SUPPORTS_HOTPLUG_CPU
1862 config CPU_BMIPS5000
1864 select MIPS_CPU_SCACHE
1865 select MIPS_L1_CACHE_SHIFT_7
1866 select SYS_SUPPORTS_SMP
1867 select SYS_SUPPORTS_HOTPLUG_CPU
1870 config SYS_HAS_CPU_LOONGSON3
1872 select CPU_SUPPORTS_CPUFREQ
1875 config SYS_HAS_CPU_LOONGSON2E
1878 config SYS_HAS_CPU_LOONGSON2F
1880 select CPU_SUPPORTS_CPUFREQ
1881 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1882 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1884 config SYS_HAS_CPU_LOONGSON1B
1887 config SYS_HAS_CPU_LOONGSON1C
1890 config SYS_HAS_CPU_MIPS32_R1
1893 config SYS_HAS_CPU_MIPS32_R2
1896 config SYS_HAS_CPU_MIPS32_R3_5
1899 config SYS_HAS_CPU_MIPS32_R5
1902 config SYS_HAS_CPU_MIPS32_R6
1905 config SYS_HAS_CPU_MIPS64_R1
1908 config SYS_HAS_CPU_MIPS64_R2
1911 config SYS_HAS_CPU_MIPS64_R6
1914 config SYS_HAS_CPU_R3000
1917 config SYS_HAS_CPU_TX39XX
1920 config SYS_HAS_CPU_VR41XX
1923 config SYS_HAS_CPU_R4300
1926 config SYS_HAS_CPU_R4X00
1929 config SYS_HAS_CPU_TX49XX
1932 config SYS_HAS_CPU_R5000
1935 config SYS_HAS_CPU_R5432
1938 config SYS_HAS_CPU_R5500
1941 config SYS_HAS_CPU_NEVADA
1944 config SYS_HAS_CPU_R8000
1947 config SYS_HAS_CPU_R10000
1950 config SYS_HAS_CPU_RM7000
1953 config SYS_HAS_CPU_SB1
1956 config SYS_HAS_CPU_CAVIUM_OCTEON
1959 config SYS_HAS_CPU_BMIPS
1962 config SYS_HAS_CPU_BMIPS32_3300
1964 select SYS_HAS_CPU_BMIPS
1966 config SYS_HAS_CPU_BMIPS4350
1968 select SYS_HAS_CPU_BMIPS
1970 config SYS_HAS_CPU_BMIPS4380
1972 select SYS_HAS_CPU_BMIPS
1974 config SYS_HAS_CPU_BMIPS5000
1976 select SYS_HAS_CPU_BMIPS
1978 config SYS_HAS_CPU_XLR
1981 config SYS_HAS_CPU_XLP
1985 # CPU may reorder R->R, R->W, W->R, W->W
1986 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1988 config WEAK_ORDERING
1992 # CPU may reorder reads and writes beyond LL/SC
1993 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1995 config WEAK_REORDERING_BEYOND_LLSC
2000 # These two indicate any level of the MIPS32 and MIPS64 architecture
2004 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2008 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2011 # These two indicate the revision of the architecture, either Release 1 or Release 2
2015 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2019 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2025 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2027 select HAVE_ARCH_BITREVERSE
2028 select MIPS_ASID_BITS_VARIABLE
2029 select MIPS_CRC_SUPPORT
2038 config SYS_SUPPORTS_32BIT_KERNEL
2040 config SYS_SUPPORTS_64BIT_KERNEL
2042 config CPU_SUPPORTS_32BIT_KERNEL
2044 config CPU_SUPPORTS_64BIT_KERNEL
2046 config CPU_SUPPORTS_CPUFREQ
2048 config CPU_SUPPORTS_ADDRWINCFG
2050 config CPU_SUPPORTS_HUGEPAGES
2052 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2054 config MIPS_PGD_C0_CONTEXT
2056 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2059 # Set to y for ptrace access to watch registers.
2061 config HARDWARE_WATCHPOINTS
2063 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2068 prompt "Kernel code model"
2070 You should only select this option if you have a workload that
2071 actually benefits from 64-bit processing or if your machine has
2072 large memory. You will only be presented a single option in this
2073 menu if your system does not support both 32-bit and 64-bit kernels.
2076 bool "32-bit kernel"
2077 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2080 Select this option if you want to build a 32-bit kernel.
2083 bool "64-bit kernel"
2084 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2086 Select this option if you want to build a 64-bit kernel.
2091 bool "KVM Guest Kernel"
2092 depends on BROKEN_ON_SMP
2094 Select this option if building a guest kernel for KVM (Trap & Emulate)
2097 config KVM_GUEST_TIMER_FREQ
2098 int "Count/Compare Timer Frequency (MHz)"
2099 depends on KVM_GUEST
2102 Set this to non-zero if building a guest kernel for KVM to skip RTC
2103 emulation when determining guest CPU Frequency. Instead, the guest's
2104 timer frequency is specified directly.
2106 config MIPS_VA_BITS_48
2107 bool "48 bits virtual memory"
2110 Support a maximum at least 48 bits of application virtual
2111 memory. Default is 40 bits or less, depending on the CPU.
2112 For page sizes 16k and above, this option results in a small
2113 memory overhead for page tables. For 4k page size, a fourth
2114 level of page tables is added which imposes both a memory
2115 overhead as well as slower TLB fault handling.
2120 prompt "Kernel page size"
2121 default PAGE_SIZE_4KB
2123 config PAGE_SIZE_4KB
2125 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2127 This option select the standard 4kB Linux page size. On some
2128 R3000-family processors this is the only available page size. Using
2129 4kB page size will minimize memory consumption and is therefore
2130 recommended for low memory systems.
2132 config PAGE_SIZE_8KB
2134 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2135 depends on !MIPS_VA_BITS_48
2137 Using 8kB page size will result in higher performance kernel at
2138 the price of higher memory consumption. This option is available
2139 only on R8000 and cnMIPS processors. Note that you will need a
2140 suitable Linux distribution to support this.
2142 config PAGE_SIZE_16KB
2144 depends on !CPU_R3000 && !CPU_TX39XX
2146 Using 16kB page size will result in higher performance kernel at
2147 the price of higher memory consumption. This option is available on
2148 all non-R3000 family processors. Note that you will need a suitable
2149 Linux distribution to support this.
2151 config PAGE_SIZE_32KB
2153 depends on CPU_CAVIUM_OCTEON
2154 depends on !MIPS_VA_BITS_48
2156 Using 32kB page size will result in higher performance kernel at
2157 the price of higher memory consumption. This option is available
2158 only on cnMIPS cores. Note that you will need a suitable Linux
2159 distribution to support this.
2161 config PAGE_SIZE_64KB
2163 depends on !CPU_R3000 && !CPU_TX39XX
2165 Using 64kB page size will result in higher performance kernel at
2166 the price of higher memory consumption. This option is available on
2167 all non-R3000 family processor. Not that at the time of this
2168 writing this option is still high experimental.
2172 config FORCE_MAX_ZONEORDER
2173 int "Maximum zone order"
2174 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2175 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2176 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2177 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2178 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2179 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2183 The kernel memory allocator divides physically contiguous memory
2184 blocks into "zones", where each zone is a power of two number of
2185 pages. This option selects the largest power of two that the kernel
2186 keeps in the memory allocator. If you need to allocate very large
2187 blocks of physically contiguous memory, then you may need to
2188 increase this value.
2190 This config option is actually maximum order plus one. For example,
2191 a value of 11 means that the largest free memory block is 2^10 pages.
2193 The page size is not necessarily 4KB. Keep this in mind
2194 when choosing a value for this option.
2199 config IP22_CPU_SCACHE
2204 # Support for a MIPS32 / MIPS64 style S-caches
2206 config MIPS_CPU_SCACHE
2210 config R5000_CPU_SCACHE
2214 config RM7000_CPU_SCACHE
2218 config SIBYTE_DMA_PAGEOPS
2219 bool "Use DMA to clear/copy pages"
2222 Instead of using the CPU to zero and copy pages, use a Data Mover
2223 channel. These DMA channels are otherwise unused by the standard
2224 SiByte Linux port. Seems to give a small performance benefit.
2226 config CPU_HAS_PREFETCH
2229 config CPU_GENERIC_DUMP_TLB
2231 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
2235 default y if !(CPU_R3000 || CPU_TX39XX)
2237 config CPU_R4K_CACHE_TLB
2239 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2242 bool "MIPS MT SMP support (1 TC on each available VPE)"
2244 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2245 select CPU_MIPSR2_IRQ_VI
2246 select CPU_MIPSR2_IRQ_EI
2251 select SYS_SUPPORTS_SMP
2252 select SYS_SUPPORTS_SCHED_SMT
2253 select MIPS_PERF_SHARED_TC_COUNTERS
2255 This is a kernel model which is known as SMVP. This is supported
2256 on cores with the MT ASE and uses the available VPEs to implement
2257 virtual processors which supports SMP. This is equivalent to the
2258 Intel Hyperthreading feature. For further information go to
2259 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2265 bool "SMT (multithreading) scheduler support"
2266 depends on SYS_SUPPORTS_SCHED_SMT
2269 SMT scheduler support improves the CPU scheduler's decision making
2270 when dealing with MIPS MT enabled cores at a cost of slightly
2271 increased overhead in some places. If unsure say N here.
2273 config SYS_SUPPORTS_SCHED_SMT
2276 config SYS_SUPPORTS_MULTITHREADING
2279 config MIPS_MT_FPAFF
2280 bool "Dynamic FPU affinity for FP-intensive threads"
2282 depends on MIPS_MT_SMP
2284 config MIPSR2_TO_R6_EMULATOR
2285 bool "MIPS R2-to-R6 emulator"
2286 depends on CPU_MIPSR6
2289 Choose this option if you want to run non-R6 MIPS userland code.
2290 Even if you say 'Y' here, the emulator will still be disabled by
2291 default. You can enable it using the 'mipsr2emu' kernel option.
2292 The only reason this is a build-time option is to save ~14K from the
2295 config SYS_SUPPORTS_VPE_LOADER
2297 depends on SYS_SUPPORTS_MULTITHREADING
2299 Indicates that the platform supports the VPE loader, and provides
2302 config MIPS_VPE_LOADER
2303 bool "VPE loader support."
2304 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2305 select CPU_MIPSR2_IRQ_VI
2306 select CPU_MIPSR2_IRQ_EI
2309 Includes a loader for loading an elf relocatable object
2310 onto another VPE and running it.
2312 config MIPS_VPE_LOADER_CMP
2315 depends on MIPS_VPE_LOADER && MIPS_CMP
2317 config MIPS_VPE_LOADER_MT
2320 depends on MIPS_VPE_LOADER && !MIPS_CMP
2322 config MIPS_VPE_LOADER_TOM
2323 bool "Load VPE program into memory hidden from linux"
2324 depends on MIPS_VPE_LOADER
2327 The loader can use memory that is present but has been hidden from
2328 Linux using the kernel command line option "mem=xxMB". It's up to
2329 you to ensure the amount you put in the option and the space your
2330 program requires is less or equal to the amount physically present.
2332 config MIPS_VPE_APSP_API
2333 bool "Enable support for AP/SP API (RTLX)"
2334 depends on MIPS_VPE_LOADER
2336 config MIPS_VPE_APSP_API_CMP
2339 depends on MIPS_VPE_APSP_API && MIPS_CMP
2341 config MIPS_VPE_APSP_API_MT
2344 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2347 bool "MIPS CMP framework support (DEPRECATED)"
2348 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2351 select SYS_SUPPORTS_SMP
2352 select WEAK_ORDERING
2355 Select this if you are using a bootloader which implements the "CMP
2356 framework" protocol (ie. YAMON) and want your kernel to make use of
2357 its ability to start secondary CPUs.
2359 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2363 bool "MIPS Coherent Processing System support"
2364 depends on SYS_SUPPORTS_MIPS_CPS
2366 select MIPS_CPS_PM if HOTPLUG_CPU
2368 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2369 select SYS_SUPPORTS_HOTPLUG_CPU
2370 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2371 select SYS_SUPPORTS_SMP
2372 select WEAK_ORDERING
2374 Select this if you wish to run an SMP kernel across multiple cores
2375 within a MIPS Coherent Processing System. When this option is
2376 enabled the kernel will probe for other cores and boot them with
2377 no external assistance. It is safe to enable this when hardware
2378 support is unavailable.
2391 config SB1_PASS_2_WORKAROUNDS
2393 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2396 config SB1_PASS_2_1_WORKAROUNDS
2398 depends on CPU_SB1 && CPU_SB1_PASS_2
2403 prompt "SmartMIPS or microMIPS ASE support"
2405 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2408 Select this if you want neither microMIPS nor SmartMIPS support
2410 config CPU_HAS_SMARTMIPS
2411 depends on SYS_SUPPORTS_SMARTMIPS
2414 SmartMIPS is a extension of the MIPS32 architecture aimed at
2415 increased security at both hardware and software level for
2416 smartcards. Enabling this option will allow proper use of the
2417 SmartMIPS instructions by Linux applications. However a kernel with
2418 this option will not work on a MIPS core without SmartMIPS core. If
2419 you don't know you probably don't have SmartMIPS and should say N
2422 config CPU_MICROMIPS
2423 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2426 When this option is enabled the kernel will be built using the
2432 bool "Support for the MIPS SIMD Architecture"
2433 depends on CPU_SUPPORTS_MSA
2434 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2436 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2437 and a set of SIMD instructions to operate on them. When this option
2438 is enabled the kernel will support allocating & switching MSA
2439 vector register contexts. If you know that your kernel will only be
2440 running on CPUs which do not support MSA or that your userland will
2441 not be making use of it then you may wish to say N here to reduce
2442 the size & complexity of your kernel.
2456 # Vectored interrupt mode is an R2 feature
2458 config CPU_MIPSR2_IRQ_VI
2462 # Extended interrupt mode is an R2 feature
2464 config CPU_MIPSR2_IRQ_EI
2469 depends on !CPU_R3000
2475 config CPU_DADDI_WORKAROUNDS
2478 config CPU_R4000_WORKAROUNDS
2480 select CPU_R4400_WORKAROUNDS
2482 config CPU_R4400_WORKAROUNDS
2485 config MIPS_ASID_SHIFT
2487 default 6 if CPU_R3000 || CPU_TX39XX
2488 default 4 if CPU_R8000
2491 config MIPS_ASID_BITS
2493 default 0 if MIPS_ASID_BITS_VARIABLE
2494 default 6 if CPU_R3000 || CPU_TX39XX
2497 config MIPS_ASID_BITS_VARIABLE
2500 config MIPS_CRC_SUPPORT
2504 # - Highmem only makes sense for the 32-bit kernel.
2505 # - The current highmem code will only work properly on physically indexed
2506 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2507 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2508 # moment we protect the user and offer the highmem option only on machines
2509 # where it's known to be safe. This will not offer highmem on a few systems
2510 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2511 # indexed CPUs but we're playing safe.
2512 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2513 # know they might have memory configurations that could make use of highmem
2517 bool "High Memory Support"
2518 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2520 config CPU_SUPPORTS_HIGHMEM
2523 config SYS_SUPPORTS_HIGHMEM
2526 config SYS_SUPPORTS_SMARTMIPS
2529 config SYS_SUPPORTS_MICROMIPS
2532 config SYS_SUPPORTS_MIPS16
2535 This option must be set if a kernel might be executed on a MIPS16-
2536 enabled CPU even if MIPS16 is not actually being used. In other
2537 words, it makes the kernel MIPS16-tolerant.
2539 config CPU_SUPPORTS_MSA
2542 config ARCH_FLATMEM_ENABLE
2544 depends on !NUMA && !CPU_LOONGSON2
2546 config ARCH_DISCONTIGMEM_ENABLE
2548 default y if SGI_IP27
2550 Say Y to support efficient handling of discontiguous physical memory,
2551 for architectures which are either NUMA (Non-Uniform Memory Access)
2552 or have huge holes in the physical address space for other reasons.
2553 See <file:Documentation/vm/numa.rst> for more.
2555 config ARCH_SPARSEMEM_ENABLE
2557 select SPARSEMEM_STATIC
2561 depends on SYS_SUPPORTS_NUMA
2563 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2564 Access). This option improves performance on systems with more
2565 than two nodes; on two node systems it is generally better to
2566 leave it disabled; on single node systems disable this option
2569 config SYS_SUPPORTS_NUMA
2573 bool "Relocatable kernel"
2574 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2576 This builds a kernel image that retains relocation information
2577 so it can be loaded someplace besides the default 1MB.
2578 The relocations make the kernel binary about 15% larger,
2579 but are discarded at runtime
2581 config RELOCATION_TABLE_SIZE
2582 hex "Relocation table size"
2583 depends on RELOCATABLE
2584 range 0x0 0x01000000
2585 default "0x00100000"
2587 A table of relocation data will be appended to the kernel binary
2588 and parsed at boot to fix up the relocated kernel.
2590 This option allows the amount of space reserved for the table to be
2591 adjusted, although the default of 1Mb should be ok in most cases.
2593 The build will fail and a valid size suggested if this is too small.
2595 If unsure, leave at the default value.
2597 config RANDOMIZE_BASE
2598 bool "Randomize the address of the kernel image"
2599 depends on RELOCATABLE
2601 Randomizes the physical and virtual address at which the
2602 kernel image is loaded, as a security feature that
2603 deters exploit attempts relying on knowledge of the location
2604 of kernel internals.
2606 Entropy is generated using any coprocessor 0 registers available.
2608 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2612 config RANDOMIZE_BASE_MAX_OFFSET
2613 hex "Maximum kASLR offset" if EXPERT
2614 depends on RANDOMIZE_BASE
2615 range 0x0 0x40000000 if EVA || 64BIT
2616 range 0x0 0x08000000
2617 default "0x01000000"
2619 When kASLR is active, this provides the maximum offset that will
2620 be applied to the kernel image. It should be set according to the
2621 amount of physical RAM available in the target system minus
2622 PHYSICAL_START and must be a power of 2.
2624 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2625 EVA or 64-bit. The default is 16Mb.
2630 depends on NEED_MULTIPLE_NODES
2632 config HW_PERF_EVENTS
2633 bool "Enable hardware performance counter support for perf events"
2634 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2637 Enable hardware performance counter support for perf events. If
2638 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
2818 bool "Kexec system call"
2821 kexec is a system call that implements the ability to shutdown your
2822 current kernel, and to start another kernel. It is like a reboot
2823 but it is independent of the system firmware. And like a reboot
2824 you can start any kernel with it, not just Linux.
2826 The name comes from the similarity to the exec system call.
2828 It is an ongoing process to be certain the hardware in a machine
2829 is properly shutdown, so do not be surprised if this code does not
2830 initially work for you. As of this writing the exact hardware
2831 interface is strongly in flux, so no good recommendation can be
2835 bool "Kernel crash dumps"
2837 Generate crash dump after being started by kexec.
2838 This should be normally only set in special crash dump kernels
2839 which are loaded in the main kernel with kexec-tools into
2840 a specially reserved region and then later executed after
2841 a crash by kdump/kexec. The crash dump kernel must be compiled
2842 to a memory address not used by the main kernel or firmware using
2845 config PHYSICAL_START
2846 hex "Physical address where the kernel is loaded"
2847 default "0xffffffff84000000"
2848 depends on CRASH_DUMP
2850 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2851 If you plan to use kernel for capturing the crash dump change
2852 this value to start of the reserved region (the "X" value as
2853 specified in the "crashkernel=YM@XM" command line boot parameter
2854 passed to the panic-ed kernel).
2857 bool "Enable seccomp to safely compute untrusted bytecode"
2861 This kernel feature is useful for number crunching applications
2862 that may need to compute untrusted bytecode during their
2863 execution. By using pipes or other transports made available to
2864 the process as file descriptors supporting the read/write
2865 syscalls, it's possible to isolate those applications in
2866 their own address space using seccomp. Once seccomp is
2867 enabled via /proc/<pid>/seccomp, it cannot be disabled
2868 and the task is only allowed to execute a few safe syscalls
2869 defined by each seccomp mode.
2871 If unsure, say Y. Only embedded should say N here.
2873 config MIPS_O32_FP64_SUPPORT
2874 bool "Support for O32 binaries using 64-bit FP"
2875 depends on 32BIT || MIPS32_O32
2877 When this is enabled, the kernel will support use of 64-bit floating
2878 point registers with binaries using the O32 ABI along with the
2879 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2880 32-bit MIPS systems this support is at the cost of increasing the
2881 size and complexity of the compiled FPU emulator. Thus if you are
2882 running a MIPS32 system and know that none of your userland binaries
2883 will require 64-bit floating point, you may wish to reduce the size
2884 of your kernel & potentially improve FP emulation performance by
2887 Although binutils currently supports use of this flag the details
2888 concerning its effect upon the O32 ABI in userland are still being
2889 worked on. In order to avoid userland becoming dependant upon current
2890 behaviour before the details have been finalised, this option should
2891 be considered experimental and only enabled by those working upon
2899 select OF_EARLY_FLATTREE
2906 prompt "Kernel appended dtb support" if USE_OF
2907 default MIPS_NO_APPENDED_DTB
2909 config MIPS_NO_APPENDED_DTB
2912 Do not enable appended dtb support.
2914 config MIPS_ELF_APPENDED_DTB
2917 With this option, the boot code will look for a device tree binary
2918 DTB) included in the vmlinux ELF section .appended_dtb. By default
2919 it is empty and the DTB can be appended using binutils command
2922 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2924 This is meant as a backward compatiblity convenience for those
2925 systems with a bootloader that can't be upgraded to accommodate
2926 the documented boot protocol using a device tree.
2928 config MIPS_RAW_APPENDED_DTB
2929 bool "vmlinux.bin or vmlinuz.bin"
2931 With this option, the boot code will look for a device tree binary
2932 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2933 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2935 This is meant as a backward compatibility convenience for those
2936 systems with a bootloader that can't be upgraded to accommodate
2937 the documented boot protocol using a device tree.
2939 Beware that there is very little in terms of protection against
2940 this option being confused by leftover garbage in memory that might
2941 look like a DTB header after a reboot if no actual DTB is appended
2942 to vmlinux.bin. Do not leave this option active in a production kernel
2943 if you don't intend to always append a DTB.
2947 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2948 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2951 default MIPS_CMDLINE_FROM_BOOTLOADER
2953 config MIPS_CMDLINE_FROM_DTB
2955 bool "Dtb kernel arguments if available"
2957 config MIPS_CMDLINE_DTB_EXTEND
2959 bool "Extend dtb kernel arguments with bootloader arguments"
2961 config MIPS_CMDLINE_FROM_BOOTLOADER
2962 bool "Bootloader kernel arguments if available"
2964 config MIPS_CMDLINE_BUILTIN_EXTEND
2965 depends on CMDLINE_BOOL
2966 bool "Extend builtin kernel arguments with bootloader arguments"
2971 config LOCKDEP_SUPPORT
2975 config STACKTRACE_SUPPORT
2979 config HAVE_LATENCYTOP_SUPPORT
2983 config PGTABLE_LEVELS
2985 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
2986 default 3 if 64BIT && !PAGE_SIZE_64KB
2989 config MIPS_AUTO_PFN_OFFSET
2992 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3000 bool "Support for PCI controller"
3001 depends on HW_HAS_PCI
3004 Find out whether you have a PCI motherboard. PCI is the name of a
3005 bus system, i.e. the way the CPU talks to the other stuff inside
3006 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
3010 bool "Support for HT-linked PCI"
3012 depends on CPU_LOONGSON3
3016 Loongson family machines use Hyper-Transport bus for inter-core
3017 connection and device connection. The PCI bus is a subordinate
3018 linked at HT. Choose Y for Loongson-3 based machines.
3023 config PCI_DOMAINS_GENERIC
3026 config PCI_DRIVERS_GENERIC
3027 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3030 config PCI_DRIVERS_LEGACY
3031 def_bool !PCI_DRIVERS_GENERIC
3032 select NO_GENERIC_PCI_IOPORT_MAP
3034 source "drivers/pci/Kconfig"
3037 # ISA support is now enabled via select. Too many systems still have the one
3038 # or other ISA chip on the board that users don't know about so don't expect
3039 # users to choose the right thing ...
3046 depends on HW_HAS_EISA
3048 select GENERIC_ISA_DMA
3050 The Extended Industry Standard Architecture (EISA) bus was
3051 developed as an open alternative to the IBM MicroChannel bus.
3053 The EISA bus provided some of the features of the IBM MicroChannel
3054 bus while maintaining backward compatibility with cards made for
3055 the older ISA bus. The EISA bus saw limited use between 1988 and
3056 1995 when it was made obsolete by the PCI bus.
3058 Say Y here if you are building a kernel for an EISA-based machine.
3062 source "drivers/eisa/Kconfig"
3065 bool "TURBOchannel support"
3066 depends on MACH_DECSTATION
3068 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3069 processors. TURBOchannel programming specifications are available
3071 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3073 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3074 Linux driver support status is documented at:
3075 <http://www.linux-mips.org/wiki/DECstation>
3081 config ARCH_MMAP_RND_BITS_MIN
3085 config ARCH_MMAP_RND_BITS_MAX
3089 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3092 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3099 select MIPS_EXTERNAL_TIMER
3107 source "drivers/pcmcia/Kconfig"
3114 tristate "RapidIO support"
3115 depends on HAS_RAPIDIO || PCI
3117 If you say Y here, the kernel will include drivers and
3118 infrastructure code to support RapidIO interconnect devices.
3120 source "drivers/rapidio/Kconfig"
3127 config MIPS32_COMPAT
3133 config SYSVIPC_COMPAT
3137 bool "Kernel support for o32 binaries"
3139 select ARCH_WANT_OLD_COMPAT_IPC
3141 select MIPS32_COMPAT
3142 select SYSVIPC_COMPAT if SYSVIPC
3144 Select this option if you want to run o32 binaries. These are pure
3145 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3146 existing binaries are in this format.
3151 bool "Kernel support for n32 binaries"
3154 select MIPS32_COMPAT
3155 select SYSVIPC_COMPAT if SYSVIPC
3157 Select this option if you want to run n32 binaries. These are
3158 64-bit binaries using 32-bit quantities for addressing and certain
3159 data that would normally be 64-bit. They are used in special
3166 default y if MIPS32_O32 || MIPS32_N32
3169 menu "Power management options"
3171 config ARCH_HIBERNATION_POSSIBLE
3173 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3175 config ARCH_SUSPEND_POSSIBLE
3177 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3179 source "kernel/power/Kconfig"
3183 config MIPS_EXTERNAL_TIMER
3186 menu "CPU Power Management"
3188 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3189 source "drivers/cpufreq/Kconfig"
3192 source "drivers/cpuidle/Kconfig"
3196 source "drivers/firmware/Kconfig"
3198 source "arch/mips/kvm/Kconfig"