4 select ARCH_BINFMT_ELF_STATE
5 select ARCH_CLOCKSOURCE_DATA
6 select ARCH_DISCARD_MEMBLOCK
7 select ARCH_HAS_ELF_RANDOMIZE
8 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
9 select ARCH_MIGHT_HAVE_PC_PARPORT
10 select ARCH_MIGHT_HAVE_PC_SERIO
11 select ARCH_SUPPORTS_UPROBES
12 select ARCH_USE_BUILTIN_BSWAP
13 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
14 select ARCH_USE_QUEUED_RWLOCKS
15 select ARCH_USE_QUEUED_SPINLOCKS
16 select ARCH_WANT_IPC_PARSE_VERSION
17 select BUILDTIME_EXTABLE_SORT
18 select CLONE_BACKWARDS
19 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_PCI_IOMAP
27 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
28 select GENERIC_SMP_IDLE_THREAD
29 select GENERIC_TIME_VSYSCALL
30 select HANDLE_DOMAIN_IRQ
31 select HAVE_ARCH_JUMP_LABEL
33 select HAVE_ARCH_MMAP_RND_BITS if MMU
34 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
35 select HAVE_ARCH_SECCOMP_FILTER
36 select HAVE_ARCH_TRACEHOOK
37 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
38 select HAVE_CBPF_JIT if (!64BIT && !CPU_MICROMIPS)
39 select HAVE_EBPF_JIT if (64BIT && !CPU_MICROMIPS)
40 select HAVE_CC_STACKPROTECTOR
41 select HAVE_CONTEXT_TRACKING
42 select HAVE_COPY_THREAD_TLS
43 select HAVE_C_RECORDMCOUNT
44 select HAVE_DEBUG_KMEMLEAK
45 select HAVE_DEBUG_STACKOVERFLOW
46 select HAVE_DMA_API_DEBUG
47 select HAVE_DMA_CONTIGUOUS
48 select HAVE_DYNAMIC_FTRACE
49 select HAVE_EXIT_THREAD
50 select HAVE_FTRACE_MCOUNT_RECORD
51 select HAVE_FUNCTION_GRAPH_TRACER
52 select HAVE_FUNCTION_TRACER
53 select HAVE_GENERIC_DMA_COHERENT
55 select HAVE_IRQ_EXIT_ON_IRQ_STACK
56 select HAVE_IRQ_TIME_ACCOUNTING
58 select HAVE_KRETPROBES
60 select HAVE_MEMBLOCK_NODE_MAP
61 select HAVE_MOD_ARCH_SPECIFIC
64 select HAVE_PERF_EVENTS
65 select HAVE_REGS_AND_STACK_ACCESS_API
66 select HAVE_SYSCALL_TRACEPOINTS
67 select HAVE_VIRT_CPU_ACCOUNTING_GEN
68 select IRQ_FORCED_THREADING
69 select MODULES_USE_ELF_RELA if MODULES && 64BIT
70 select MODULES_USE_ELF_REL if MODULES
71 select PERF_USE_VMALLOC
72 select RTC_LIB if !MACH_LOONGSON64
73 select SYSCTL_EXCEPTION_TRACE
76 menu "Machine selection"
83 bool "Generic board-agnostic MIPS kernel"
87 select CLKSRC_MIPS_GIC
89 select CPU_MIPSR2_IRQ_VI
90 select CPU_MIPSR2_IRQ_EI
92 select DMA_PERDEV_COHERENT
96 select MIPS_CPU_SCACHE
98 select MIPS_L1_CACHE_SHIFT_7
100 select PCI_DRIVERS_GENERIC
104 select SYS_HAS_CPU_MIPS32_R1
105 select SYS_HAS_CPU_MIPS32_R2
106 select SYS_HAS_CPU_MIPS32_R6
107 select SYS_HAS_CPU_MIPS64_R1
108 select SYS_HAS_CPU_MIPS64_R2
109 select SYS_HAS_CPU_MIPS64_R6
110 select SYS_SUPPORTS_32BIT_KERNEL
111 select SYS_SUPPORTS_64BIT_KERNEL
112 select SYS_SUPPORTS_BIG_ENDIAN
113 select SYS_SUPPORTS_HIGHMEM
114 select SYS_SUPPORTS_LITTLE_ENDIAN
115 select SYS_SUPPORTS_MICROMIPS
116 select SYS_SUPPORTS_MIPS_CPS
117 select SYS_SUPPORTS_MIPS16
118 select SYS_SUPPORTS_MULTITHREADING
119 select SYS_SUPPORTS_RELOCATABLE
120 select SYS_SUPPORTS_SMARTMIPS
121 select USB_EHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
122 select USB_EHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
123 select USB_OHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
124 select USB_OHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
125 select USB_UHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
126 select USB_UHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
129 Select this to build a kernel which aims to support multiple boards,
130 generally using a flattened device tree passed from the bootloader
131 using the boot protocol defined in the UHI (Unified Hosting
132 Interface) specification.
135 bool "Alchemy processor based machines"
136 select ARCH_PHYS_ADDR_T_64BIT
140 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
141 select SYS_HAS_CPU_MIPS32_R1
142 select SYS_SUPPORTS_32BIT_KERNEL
143 select SYS_SUPPORTS_APM_EMULATION
145 select SYS_SUPPORTS_ZBOOT
149 bool "Texas Instruments AR7"
151 select DMA_NONCOHERENT
155 select NO_EXCEPT_FILL
157 select SYS_HAS_CPU_MIPS32_R1
158 select SYS_HAS_EARLY_PRINTK
159 select SYS_SUPPORTS_32BIT_KERNEL
160 select SYS_SUPPORTS_LITTLE_ENDIAN
161 select SYS_SUPPORTS_MIPS16
162 select SYS_SUPPORTS_ZBOOT_UART16550
167 Support for the Texas Instruments AR7 System-on-a-Chip
168 family: TNETD7100, 7200 and 7300.
171 bool "Atheros AR231x/AR531x SoC support"
174 select DMA_NONCOHERENT
177 select SYS_HAS_CPU_MIPS32_R1
178 select SYS_SUPPORTS_BIG_ENDIAN
179 select SYS_SUPPORTS_32BIT_KERNEL
180 select SYS_HAS_EARLY_PRINTK
182 Support for Atheros AR231x and Atheros AR531x based boards
185 bool "Atheros AR71XX/AR724X/AR913X based boards"
186 select ARCH_HAS_RESET_CONTROLLER
190 select DMA_NONCOHERENT
197 select SYS_HAS_CPU_MIPS32_R2
198 select SYS_HAS_EARLY_PRINTK
199 select SYS_SUPPORTS_32BIT_KERNEL
200 select SYS_SUPPORTS_BIG_ENDIAN
201 select SYS_SUPPORTS_MIPS16
202 select SYS_SUPPORTS_ZBOOT_UART_PROM
205 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
208 bool "Broadcom Generic BMIPS kernel"
210 select NO_EXCEPT_FILL
216 select BCM6345_L1_IRQ
217 select BCM7038_L1_IRQ
218 select BCM7120_L2_IRQ
219 select BRCMSTB_L2_IRQ
221 select DMA_NONCOHERENT
222 select SYS_SUPPORTS_32BIT_KERNEL
223 select SYS_SUPPORTS_LITTLE_ENDIAN
224 select SYS_SUPPORTS_BIG_ENDIAN
225 select SYS_SUPPORTS_HIGHMEM
226 select SYS_HAS_CPU_BMIPS32_3300
227 select SYS_HAS_CPU_BMIPS4350
228 select SYS_HAS_CPU_BMIPS4380
229 select SYS_HAS_CPU_BMIPS5000
231 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
232 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
233 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
234 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
236 Build a generic DT-based kernel image that boots on select
237 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
238 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
239 must be set appropriately for your board.
242 bool "Broadcom BCM47XX based boards"
246 select DMA_NONCOHERENT
249 select SYS_HAS_CPU_MIPS32_R1
250 select NO_EXCEPT_FILL
251 select SYS_SUPPORTS_32BIT_KERNEL
252 select SYS_SUPPORTS_LITTLE_ENDIAN
253 select SYS_SUPPORTS_MIPS16
254 select SYS_HAS_EARLY_PRINTK
255 select USE_GENERIC_EARLY_PRINTK_8250
257 select LEDS_GPIO_REGISTER
261 Support for BCM47XX based boards
264 bool "Broadcom BCM63XX based boards"
269 select DMA_NONCOHERENT
271 select SYS_SUPPORTS_32BIT_KERNEL
272 select SYS_SUPPORTS_BIG_ENDIAN
273 select SYS_HAS_EARLY_PRINTK
277 select MIPS_L1_CACHE_SHIFT_4
280 Support for BCM63XX based boards
287 select DMA_NONCOHERENT
293 select PCI_GT64XXX_PCI0
295 select SYS_HAS_CPU_NEVADA
296 select SYS_HAS_EARLY_PRINTK
297 select SYS_SUPPORTS_32BIT_KERNEL
298 select SYS_SUPPORTS_64BIT_KERNEL
299 select SYS_SUPPORTS_LITTLE_ENDIAN
300 select USE_GENERIC_EARLY_PRINTK_8250
302 config MACH_DECSTATION
306 select CEVT_R4K if CPU_R4X00
308 select CSRC_R4K if CPU_R4X00
309 select CPU_DADDI_WORKAROUNDS if 64BIT
310 select CPU_R4000_WORKAROUNDS if 64BIT
311 select CPU_R4400_WORKAROUNDS if 64BIT
312 select DMA_NONCOHERENT
315 select SYS_HAS_CPU_R3000
316 select SYS_HAS_CPU_R4X00
317 select SYS_SUPPORTS_32BIT_KERNEL
318 select SYS_SUPPORTS_64BIT_KERNEL
319 select SYS_SUPPORTS_LITTLE_ENDIAN
320 select SYS_SUPPORTS_128HZ
321 select SYS_SUPPORTS_256HZ
322 select SYS_SUPPORTS_1024HZ
323 select MIPS_L1_CACHE_SHIFT_4
325 This enables support for DEC's MIPS based workstations. For details
326 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
327 DECstation porting pages on <http://decstation.unix-ag.org/>.
329 If you have one of the following DECstation Models you definitely
330 want to choose R4xx0 for the CPU Type:
337 otherwise choose R3000.
340 bool "Jazz family of machines"
343 select ARCH_MAY_HAVE_PC_FDC
346 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
347 select GENERIC_ISA_DMA
348 select HAVE_PCSPKR_PLATFORM
353 select SYS_HAS_CPU_R4X00
354 select SYS_SUPPORTS_32BIT_KERNEL
355 select SYS_SUPPORTS_64BIT_KERNEL
356 select SYS_SUPPORTS_100HZ
358 This a family of machines based on the MIPS R4030 chipset which was
359 used by several vendors to build RISC/os and Windows NT workstations.
360 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
361 Olivetti M700-10 workstations.
364 bool "Ingenic SoC based machines"
365 select SYS_SUPPORTS_32BIT_KERNEL
366 select SYS_SUPPORTS_LITTLE_ENDIAN
367 select SYS_SUPPORTS_ZBOOT_UART16550
368 select DMA_NONCOHERENT
373 select GENERIC_IRQ_CHIP
379 bool "Lantiq based platforms"
380 select DMA_NONCOHERENT
384 select SYS_HAS_CPU_MIPS32_R1
385 select SYS_HAS_CPU_MIPS32_R2
386 select SYS_SUPPORTS_BIG_ENDIAN
387 select SYS_SUPPORTS_32BIT_KERNEL
388 select SYS_SUPPORTS_MIPS16
389 select SYS_SUPPORTS_MULTITHREADING
390 select SYS_HAS_EARLY_PRINTK
397 select PINCTRL_LANTIQ
398 select ARCH_HAS_RESET_CONTROLLER
399 select RESET_CONTROLLER
402 bool "LASAT Networks platforms"
406 select DMA_NONCOHERENT
407 select SYS_HAS_EARLY_PRINTK
410 select PCI_GT64XXX_PCI0
412 select R5000_CPU_SCACHE
413 select SYS_HAS_CPU_R5000
414 select SYS_SUPPORTS_32BIT_KERNEL
415 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
416 select SYS_SUPPORTS_LITTLE_ENDIAN
418 config MACH_LOONGSON32
419 bool "Loongson-1 family of machines"
420 select SYS_SUPPORTS_ZBOOT
422 This enables support for the Loongson-1 family of machines.
424 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
425 the Institute of Computing Technology (ICT), Chinese Academy of
428 config MACH_LOONGSON64
429 bool "Loongson-2/3 family of machines"
430 select SYS_SUPPORTS_ZBOOT
432 This enables the support of Loongson-2/3 family of machines.
434 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
435 family of multi-core CPUs. They are both 64-bit general-purpose
436 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
437 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
438 in the People's Republic of China. The chief architect is Professor
441 config MACH_PISTACHIO
442 bool "IMG Pistachio SoC based boards"
446 select CLKSRC_MIPS_GIC
449 select DMA_NONCOHERENT
454 select MIPS_CPU_SCACHE
458 select SYS_HAS_CPU_MIPS32_R2
459 select SYS_SUPPORTS_32BIT_KERNEL
460 select SYS_SUPPORTS_LITTLE_ENDIAN
461 select SYS_SUPPORTS_MIPS_CPS
462 select SYS_SUPPORTS_MULTITHREADING
463 select SYS_SUPPORTS_RELOCATABLE
464 select SYS_SUPPORTS_ZBOOT
465 select SYS_HAS_EARLY_PRINTK
466 select USE_GENERIC_EARLY_PRINTK_8250
469 This enables support for the IMG Pistachio SoC platform.
472 bool "MIPSfpga Xilinx based boards"
482 select MIPS_CPU_SCACHE
483 select SYS_HAS_EARLY_PRINTK
484 select SYS_HAS_CPU_MIPS32_R2
485 select SYS_SUPPORTS_32BIT_KERNEL
486 select SYS_SUPPORTS_LITTLE_ENDIAN
487 select SYS_SUPPORTS_ZBOOT_UART16550
489 select USE_GENERIC_EARLY_PRINTK_8250
492 This enables support for the IMG University Program MIPSfpga platform.
495 bool "MIPS Malta board"
496 select ARCH_MAY_HAVE_PC_FDC
502 select CLKSRC_MIPS_GIC
504 select DMA_MAYBE_COHERENT
505 select GENERIC_ISA_DMA
506 select HAVE_PCSPKR_PLATFORM
513 select MIPS_CPU_SCACHE
514 select MIPS_L1_CACHE_SHIFT_6
515 select PCI_GT64XXX_PCI0
519 select SYS_HAS_CPU_MIPS32_R1
520 select SYS_HAS_CPU_MIPS32_R2
521 select SYS_HAS_CPU_MIPS32_R3_5
522 select SYS_HAS_CPU_MIPS32_R5
523 select SYS_HAS_CPU_MIPS32_R6
524 select SYS_HAS_CPU_MIPS64_R1
525 select SYS_HAS_CPU_MIPS64_R2
526 select SYS_HAS_CPU_MIPS64_R6
527 select SYS_HAS_CPU_NEVADA
528 select SYS_HAS_CPU_RM7000
529 select SYS_SUPPORTS_32BIT_KERNEL
530 select SYS_SUPPORTS_64BIT_KERNEL
531 select SYS_SUPPORTS_BIG_ENDIAN
532 select SYS_SUPPORTS_HIGHMEM
533 select SYS_SUPPORTS_LITTLE_ENDIAN
534 select SYS_SUPPORTS_MICROMIPS
535 select SYS_SUPPORTS_MIPS_CMP
536 select SYS_SUPPORTS_MIPS_CPS
537 select SYS_SUPPORTS_MIPS16
538 select SYS_SUPPORTS_MULTITHREADING
539 select SYS_SUPPORTS_SMARTMIPS
540 select SYS_SUPPORTS_ZBOOT
541 select SYS_SUPPORTS_RELOCATABLE
544 select ZONE_DMA32 if 64BIT
548 This enables support for the MIPS Technologies Malta evaluation
552 bool "Microchip PIC32 Family"
554 This enables support for the Microchip PIC32 family of platforms.
556 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
560 bool "NEC EMMA2RH Mark-eins board"
564 This enables support for the NEC Electronics Mark-eins boards.
567 bool "NEC VR4100 series based machines"
570 select SYS_HAS_CPU_VR41XX
571 select SYS_SUPPORTS_MIPS16
575 bool "NXP STB220 board"
578 Support for NXP Semiconductors STB220 Development Board.
585 Support for NXP Semiconductors STB225 Development Board.
588 bool "PMC-Sierra MSP chipsets"
591 select DMA_NONCOHERENT
593 select NO_EXCEPT_FILL
595 select SYS_HAS_CPU_MIPS32_R1
596 select SYS_HAS_CPU_MIPS32_R2
597 select SYS_SUPPORTS_32BIT_KERNEL
598 select SYS_SUPPORTS_BIG_ENDIAN
599 select SYS_SUPPORTS_MIPS16
602 select SERIAL_8250_CONSOLE
603 select USB_EHCI_BIG_ENDIAN_MMIO
604 select USB_EHCI_BIG_ENDIAN_DESC
606 This adds support for the PMC-Sierra family of Multi-Service
607 Processor System-On-A-Chips. These parts include a number
608 of integrated peripherals, interfaces and DSPs in addition to
609 a variety of MIPS cores.
612 bool "Ralink based machines"
616 select DMA_NONCOHERENT
619 select SYS_HAS_CPU_MIPS32_R1
620 select SYS_HAS_CPU_MIPS32_R2
621 select SYS_SUPPORTS_32BIT_KERNEL
622 select SYS_SUPPORTS_LITTLE_ENDIAN
623 select SYS_SUPPORTS_MIPS16
624 select SYS_HAS_EARLY_PRINTK
626 select ARCH_HAS_RESET_CONTROLLER
627 select RESET_CONTROLLER
630 bool "SGI IP22 (Indy/Indigo2)"
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)"
675 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)"
698 select DEFAULT_SGI_PARTITION
699 select DMA_NONCOHERENT
700 select GENERIC_ISA_DMA_SUPPORT_BROKEN
706 select SGI_HAS_INDYDOG
712 select SYS_HAS_CPU_R10000
714 # Disable EARLY_PRINTK for now since it leads to overwritten prom
715 # memory during early boot on some machines.
717 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
718 # for a more details discussion
720 # select SYS_HAS_EARLY_PRINTK
721 select SYS_SUPPORTS_64BIT_KERNEL
722 select SYS_SUPPORTS_BIG_ENDIAN
723 select MIPS_L1_CACHE_SHIFT_7
725 This is the SGI Indigo2 with R10000 processor. To compile a Linux
726 kernel that runs on these, say Y here.
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"
753 select SIBYTE_BCM1120
755 select SYS_HAS_CPU_SB1
756 select SYS_SUPPORTS_BIG_ENDIAN
757 select SYS_SUPPORTS_LITTLE_ENDIAN
760 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"
773 select SIBYTE_BCM1125
775 select SYS_HAS_CPU_SB1
776 select SYS_SUPPORTS_BIG_ENDIAN
777 select SYS_SUPPORTS_HIGHMEM
778 select SYS_SUPPORTS_LITTLE_ENDIAN
781 bool "Sibyte BCM91125E-Rhone"
784 select SIBYTE_BCM1125H
786 select SYS_HAS_CPU_SB1
787 select SYS_SUPPORTS_BIG_ENDIAN
788 select SYS_SUPPORTS_LITTLE_ENDIAN
791 bool "Sibyte BCM91250A-SWARM"
794 select HAVE_PATA_PLATFORM
797 select SYS_HAS_CPU_SB1
798 select SYS_SUPPORTS_BIG_ENDIAN
799 select SYS_SUPPORTS_HIGHMEM
800 select SYS_SUPPORTS_LITTLE_ENDIAN
801 select ZONE_DMA32 if 64BIT
803 config SIBYTE_LITTLESUR
804 bool "Sibyte BCM91250C2-LittleSur"
807 select HAVE_PATA_PLATFORM
810 select SYS_HAS_CPU_SB1
811 select SYS_SUPPORTS_BIG_ENDIAN
812 select SYS_SUPPORTS_HIGHMEM
813 select SYS_SUPPORTS_LITTLE_ENDIAN
815 config SIBYTE_SENTOSA
816 bool "Sibyte BCM91250E-Sentosa"
821 select SYS_HAS_CPU_SB1
822 select SYS_SUPPORTS_BIG_ENDIAN
823 select SYS_SUPPORTS_LITTLE_ENDIAN
826 bool "Sibyte BCM91480B-BigSur"
829 select NR_CPUS_DEFAULT_4
830 select SIBYTE_BCM1x80
832 select SYS_HAS_CPU_SB1
833 select SYS_SUPPORTS_BIG_ENDIAN
834 select SYS_SUPPORTS_HIGHMEM
835 select SYS_SUPPORTS_LITTLE_ENDIAN
836 select ZONE_DMA32 if 64BIT
839 bool "SNI RM200/300/400"
840 select FW_ARC if CPU_LITTLE_ENDIAN
841 select FW_ARC32 if CPU_LITTLE_ENDIAN
842 select FW_SNIPROM if CPU_BIG_ENDIAN
843 select ARCH_MAY_HAVE_PC_FDC
847 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
848 select DMA_NONCOHERENT
849 select GENERIC_ISA_DMA
850 select HAVE_PCSPKR_PLATFORM
857 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
858 select SYS_HAS_CPU_R4X00
859 select SYS_HAS_CPU_R5000
860 select SYS_HAS_CPU_R10000
861 select R5000_CPU_SCACHE
862 select SYS_HAS_EARLY_PRINTK
863 select SYS_SUPPORTS_32BIT_KERNEL
864 select SYS_SUPPORTS_64BIT_KERNEL
865 select SYS_SUPPORTS_BIG_ENDIAN
866 select SYS_SUPPORTS_HIGHMEM
867 select SYS_SUPPORTS_LITTLE_ENDIAN
869 The SNI RM200/300/400 are MIPS-based machines manufactured by
870 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
871 Technology and now in turn merged with Fujitsu. Say Y here to
872 support this machine type.
875 bool "Toshiba TX39 series based machines"
878 bool "Toshiba TX49 series based machines"
880 config MIKROTIK_RB532
881 bool "Mikrotik RB532 boards"
884 select DMA_NONCOHERENT
887 select SYS_HAS_CPU_MIPS32_R1
888 select SYS_SUPPORTS_32BIT_KERNEL
889 select SYS_SUPPORTS_LITTLE_ENDIAN
893 select MIPS_L1_CACHE_SHIFT_4
895 Support the Mikrotik(tm) RouterBoard 532 series,
896 based on the IDT RC32434 SoC.
898 config CAVIUM_OCTEON_SOC
899 bool "Cavium Networks Octeon SoC based boards"
901 select ARCH_PHYS_ADDR_T_64BIT
903 select SYS_SUPPORTS_64BIT_KERNEL
904 select SYS_SUPPORTS_BIG_ENDIAN
906 select EDAC_ATOMIC_SCRUB
907 select SYS_SUPPORTS_LITTLE_ENDIAN
908 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
909 select SYS_HAS_EARLY_PRINTK
910 select SYS_HAS_CPU_CAVIUM_OCTEON
917 select ARCH_SPARSEMEM_ENABLE
918 select SYS_SUPPORTS_SMP
919 select NR_CPUS_DEFAULT_64
920 select MIPS_NR_CPU_NR_MAP_1024
922 select MTD_COMPLEX_MAPPINGS
923 select SYS_SUPPORTS_RELOCATABLE
925 This option supports all of the Octeon reference boards from Cavium
926 Networks. It builds a kernel that dynamically determines the Octeon
927 CPU type and supports all known board reference implementations.
928 Some of the supported boards are:
935 Say Y here for most Octeon reference boards.
938 bool "Netlogic XLR/XLS based systems"
941 select SYS_HAS_CPU_XLR
942 select SYS_SUPPORTS_SMP
945 select SYS_SUPPORTS_32BIT_KERNEL
946 select SYS_SUPPORTS_64BIT_KERNEL
947 select ARCH_PHYS_ADDR_T_64BIT
948 select SYS_SUPPORTS_BIG_ENDIAN
949 select SYS_SUPPORTS_HIGHMEM
951 select NR_CPUS_DEFAULT_32
955 select ZONE_DMA32 if 64BIT
957 select SYS_HAS_EARLY_PRINTK
958 select SYS_SUPPORTS_ZBOOT
959 select SYS_SUPPORTS_ZBOOT_UART16550
961 Support for systems based on Netlogic XLR and XLS processors.
962 Say Y here if you have a XLR or XLS based board.
965 bool "Netlogic XLP based systems"
968 select SYS_HAS_CPU_XLP
969 select SYS_SUPPORTS_SMP
971 select SYS_SUPPORTS_32BIT_KERNEL
972 select SYS_SUPPORTS_64BIT_KERNEL
973 select ARCH_PHYS_ADDR_T_64BIT
975 select SYS_SUPPORTS_BIG_ENDIAN
976 select SYS_SUPPORTS_LITTLE_ENDIAN
977 select SYS_SUPPORTS_HIGHMEM
979 select NR_CPUS_DEFAULT_32
983 select ZONE_DMA32 if 64BIT
985 select SYS_HAS_EARLY_PRINTK
987 select SYS_SUPPORTS_ZBOOT
988 select SYS_SUPPORTS_ZBOOT_UART16550
990 This board is based on Netlogic XLP Processor.
991 Say Y here if you have a XLP based board.
994 bool "Para-Virtualized guest system"
998 select SYS_SUPPORTS_64BIT_KERNEL
999 select SYS_SUPPORTS_32BIT_KERNEL
1000 select SYS_SUPPORTS_BIG_ENDIAN
1001 select SYS_SUPPORTS_SMP
1002 select NR_CPUS_DEFAULT_4
1003 select SYS_HAS_EARLY_PRINTK
1004 select SYS_HAS_CPU_MIPS32_R2
1005 select SYS_HAS_CPU_MIPS64_R2
1006 select SYS_HAS_CPU_CAVIUM_OCTEON
1008 select SWAP_IO_SPACE
1010 This option supports guest running under ????
1014 source "arch/mips/alchemy/Kconfig"
1015 source "arch/mips/ath25/Kconfig"
1016 source "arch/mips/ath79/Kconfig"
1017 source "arch/mips/bcm47xx/Kconfig"
1018 source "arch/mips/bcm63xx/Kconfig"
1019 source "arch/mips/bmips/Kconfig"
1020 source "arch/mips/generic/Kconfig"
1021 source "arch/mips/jazz/Kconfig"
1022 source "arch/mips/jz4740/Kconfig"
1023 source "arch/mips/lantiq/Kconfig"
1024 source "arch/mips/lasat/Kconfig"
1025 source "arch/mips/pic32/Kconfig"
1026 source "arch/mips/pistachio/Kconfig"
1027 source "arch/mips/pmcs-msp71xx/Kconfig"
1028 source "arch/mips/ralink/Kconfig"
1029 source "arch/mips/sgi-ip27/Kconfig"
1030 source "arch/mips/sibyte/Kconfig"
1031 source "arch/mips/txx9/Kconfig"
1032 source "arch/mips/vr41xx/Kconfig"
1033 source "arch/mips/cavium-octeon/Kconfig"
1034 source "arch/mips/loongson32/Kconfig"
1035 source "arch/mips/loongson64/Kconfig"
1036 source "arch/mips/netlogic/Kconfig"
1037 source "arch/mips/paravirt/Kconfig"
1038 source "arch/mips/xilfpga/Kconfig"
1042 config RWSEM_GENERIC_SPINLOCK
1046 config RWSEM_XCHGADD_ALGORITHM
1049 config GENERIC_HWEIGHT
1053 config GENERIC_CALIBRATE_DELAY
1057 config SCHED_OMIT_FRAME_POINTER
1062 # Select some configuration options automatically based on user selections.
1067 config ARCH_MAY_HAVE_PC_FDC
1103 config MIPS_CLOCK_VSYSCALL
1104 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1113 config ARCH_DMA_ADDR_T_64BIT
1114 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1116 config ARCH_SUPPORTS_UPROBES
1119 config DMA_MAYBE_COHERENT
1120 select DMA_NONCOHERENT
1123 config DMA_PERDEV_COHERENT
1125 select DMA_MAYBE_COHERENT
1130 config DMA_NONCOHERENT
1132 select NEED_DMA_MAP_STATE
1134 config NEED_DMA_MAP_STATE
1137 config SYS_HAS_EARLY_PRINTK
1140 config SYS_SUPPORTS_HOTPLUG_CPU
1143 config MIPS_BONITO64
1158 config NO_IOPORT_MAP
1164 config GENERIC_ISA_DMA
1166 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1169 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1171 select GENERIC_ISA_DMA
1176 config HOLES_IN_ZONE
1179 config SYS_SUPPORTS_RELOCATABLE
1182 Selected if the platform supports relocating the kernel.
1183 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1184 to allow access to command line and entropy sources.
1186 config MIPS_CBPF_JIT
1188 depends on BPF_JIT && HAVE_CBPF_JIT
1190 config MIPS_EBPF_JIT
1192 depends on BPF_JIT && HAVE_EBPF_JIT
1196 # Endianness selection. Sufficiently obscure so many users don't know what to
1197 # answer,so we try hard to limit the available choices. Also the use of a
1198 # choice statement should be more obvious to the user.
1201 prompt "Endianness selection"
1203 Some MIPS machines can be configured for either little or big endian
1204 byte order. These modes require different kernels and a different
1205 Linux distribution. In general there is one preferred byteorder for a
1206 particular system but some systems are just as commonly used in the
1207 one or the other endianness.
1209 config CPU_BIG_ENDIAN
1211 depends on SYS_SUPPORTS_BIG_ENDIAN
1213 config CPU_LITTLE_ENDIAN
1214 bool "Little endian"
1215 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1222 config SYS_SUPPORTS_APM_EMULATION
1225 config SYS_SUPPORTS_BIG_ENDIAN
1228 config SYS_SUPPORTS_LITTLE_ENDIAN
1231 config SYS_SUPPORTS_HUGETLBFS
1233 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1236 config MIPS_HUGE_TLB_SUPPORT
1237 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1254 config PCI_GT64XXX_PCI0
1257 config NO_EXCEPT_FILL
1264 select DMA_NONCOHERENT
1266 select SWAP_IO_SPACE
1267 select SYS_HAS_CPU_R5500
1268 select SYS_SUPPORTS_32BIT_KERNEL
1269 select SYS_SUPPORTS_64BIT_KERNEL
1270 select SYS_SUPPORTS_BIG_ENDIAN
1277 select DMA_NONCOHERENT
1278 select SYS_HAS_CPU_MIPS32_R2
1279 select SYS_SUPPORTS_32BIT_KERNEL
1280 select SYS_SUPPORTS_LITTLE_ENDIAN
1281 select SYS_SUPPORTS_BIG_ENDIAN
1282 select SYS_SUPPORTS_MIPS16
1283 select CPU_MIPSR2_IRQ_VI
1292 config SWAP_IO_SPACE
1295 config SGI_HAS_INDYDOG
1307 config SGI_HAS_ZILOG
1310 config SGI_HAS_I8042
1313 config DEFAULT_SGI_PARTITION
1325 config MIPS_L1_CACHE_SHIFT_4
1328 config MIPS_L1_CACHE_SHIFT_5
1331 config MIPS_L1_CACHE_SHIFT_6
1334 config MIPS_L1_CACHE_SHIFT_7
1337 config MIPS_L1_CACHE_SHIFT
1339 default "7" if MIPS_L1_CACHE_SHIFT_7
1340 default "6" if MIPS_L1_CACHE_SHIFT_6
1341 default "5" if MIPS_L1_CACHE_SHIFT_5
1342 default "4" if MIPS_L1_CACHE_SHIFT_4
1345 config HAVE_STD_PC_SERIAL_PORT
1349 bool "ARC console support"
1350 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1354 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1359 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1368 menu "CPU selection"
1374 config CPU_LOONGSON3
1375 bool "Loongson 3 CPU"
1376 depends on SYS_HAS_CPU_LOONGSON3
1377 select CPU_SUPPORTS_64BIT_KERNEL
1378 select CPU_SUPPORTS_HIGHMEM
1379 select CPU_SUPPORTS_HUGEPAGES
1380 select WEAK_ORDERING
1381 select WEAK_REORDERING_BEYOND_LLSC
1382 select MIPS_PGD_C0_CONTEXT
1383 select MIPS_L1_CACHE_SHIFT_6
1386 The Loongson 3 processor implements the MIPS64R2 instruction
1387 set with many extensions.
1389 config LOONGSON3_ENHANCEMENT
1390 bool "New Loongson 3 CPU Enhancements"
1393 select CPU_HAS_PREFETCH
1394 depends on CPU_LOONGSON3
1396 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1397 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1398 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1399 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1400 Fast TLB refill support, etc.
1402 This option enable those enhancements which are not probed at run
1403 time. If you want a generic kernel to run on all Loongson 3 machines,
1404 please say 'N' here. If you want a high-performance kernel to run on
1405 new Loongson 3 machines only, please say 'Y' here.
1407 config CPU_LOONGSON2E
1409 depends on SYS_HAS_CPU_LOONGSON2E
1410 select CPU_LOONGSON2
1412 The Loongson 2E processor implements the MIPS III instruction set
1413 with many extensions.
1415 It has an internal FPGA northbridge, which is compatible to
1418 config CPU_LOONGSON2F
1420 depends on SYS_HAS_CPU_LOONGSON2F
1421 select CPU_LOONGSON2
1424 The Loongson 2F processor implements the MIPS III instruction set
1425 with many extensions.
1427 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1428 have a similar programming interface with FPGA northbridge used in
1431 config CPU_LOONGSON1B
1433 depends on SYS_HAS_CPU_LOONGSON1B
1434 select CPU_LOONGSON1
1435 select LEDS_GPIO_REGISTER
1437 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1438 release 2 instruction set.
1440 config CPU_LOONGSON1C
1442 depends on SYS_HAS_CPU_LOONGSON1C
1443 select CPU_LOONGSON1
1444 select LEDS_GPIO_REGISTER
1446 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1447 release 2 instruction set.
1449 config CPU_MIPS32_R1
1450 bool "MIPS32 Release 1"
1451 depends on SYS_HAS_CPU_MIPS32_R1
1452 select CPU_HAS_PREFETCH
1453 select CPU_SUPPORTS_32BIT_KERNEL
1454 select CPU_SUPPORTS_HIGHMEM
1456 Choose this option to build a kernel for release 1 or later of the
1457 MIPS32 architecture. Most modern embedded systems with a 32-bit
1458 MIPS processor are based on a MIPS32 processor. If you know the
1459 specific type of processor in your system, choose those that one
1460 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1461 Release 2 of the MIPS32 architecture is available since several
1462 years so chances are you even have a MIPS32 Release 2 processor
1463 in which case you should choose CPU_MIPS32_R2 instead for better
1466 config CPU_MIPS32_R2
1467 bool "MIPS32 Release 2"
1468 depends on SYS_HAS_CPU_MIPS32_R2
1469 select CPU_HAS_PREFETCH
1470 select CPU_SUPPORTS_32BIT_KERNEL
1471 select CPU_SUPPORTS_HIGHMEM
1472 select CPU_SUPPORTS_MSA
1475 Choose this option to build a kernel for release 2 or later of the
1476 MIPS32 architecture. Most modern embedded systems with a 32-bit
1477 MIPS processor are based on a MIPS32 processor. If you know the
1478 specific type of processor in your system, choose those that one
1479 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1481 config CPU_MIPS32_R6
1482 bool "MIPS32 Release 6"
1483 depends on SYS_HAS_CPU_MIPS32_R6
1484 select CPU_HAS_PREFETCH
1485 select CPU_SUPPORTS_32BIT_KERNEL
1486 select CPU_SUPPORTS_HIGHMEM
1487 select CPU_SUPPORTS_MSA
1490 select MIPS_O32_FP64_SUPPORT
1492 Choose this option to build a kernel for release 6 or later of the
1493 MIPS32 architecture. New MIPS processors, starting with the Warrior
1494 family, are based on a MIPS32r6 processor. If you own an older
1495 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1497 config CPU_MIPS64_R1
1498 bool "MIPS64 Release 1"
1499 depends on SYS_HAS_CPU_MIPS64_R1
1500 select CPU_HAS_PREFETCH
1501 select CPU_SUPPORTS_32BIT_KERNEL
1502 select CPU_SUPPORTS_64BIT_KERNEL
1503 select CPU_SUPPORTS_HIGHMEM
1504 select CPU_SUPPORTS_HUGEPAGES
1506 Choose this option to build a kernel for release 1 or later of the
1507 MIPS64 architecture. Many modern embedded systems with a 64-bit
1508 MIPS processor are based on a MIPS64 processor. If you know the
1509 specific type of processor in your system, choose those that one
1510 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1511 Release 2 of the MIPS64 architecture is available since several
1512 years so chances are you even have a MIPS64 Release 2 processor
1513 in which case you should choose CPU_MIPS64_R2 instead for better
1516 config CPU_MIPS64_R2
1517 bool "MIPS64 Release 2"
1518 depends on SYS_HAS_CPU_MIPS64_R2
1519 select CPU_HAS_PREFETCH
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
1542 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1545 Choose this option to build a kernel for release 6 or later of the
1546 MIPS64 architecture. New MIPS processors, starting with the Warrior
1547 family, are based on a MIPS64r6 processor. If you own an older
1548 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1552 depends on SYS_HAS_CPU_R3000
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
1571 depends on SYS_HAS_CPU_VR41XX
1572 select CPU_SUPPORTS_32BIT_KERNEL
1573 select CPU_SUPPORTS_64BIT_KERNEL
1575 The options selects support for the NEC VR4100 series of processors.
1576 Only choose this option if you have one of these processors as a
1577 kernel built with this option will not run on any other type of
1578 processor or vice versa.
1582 depends on SYS_HAS_CPU_R4300
1583 select CPU_SUPPORTS_32BIT_KERNEL
1584 select CPU_SUPPORTS_64BIT_KERNEL
1586 MIPS Technologies R4300-series processors.
1590 depends on SYS_HAS_CPU_R4X00
1591 select CPU_SUPPORTS_32BIT_KERNEL
1592 select CPU_SUPPORTS_64BIT_KERNEL
1593 select CPU_SUPPORTS_HUGEPAGES
1595 MIPS Technologies R4000-series processors other than 4300, including
1596 the R4000, R4400, R4600, and 4700.
1600 depends on SYS_HAS_CPU_TX49XX
1601 select CPU_HAS_PREFETCH
1602 select CPU_SUPPORTS_32BIT_KERNEL
1603 select CPU_SUPPORTS_64BIT_KERNEL
1604 select CPU_SUPPORTS_HUGEPAGES
1608 depends on SYS_HAS_CPU_R5000
1609 select CPU_SUPPORTS_32BIT_KERNEL
1610 select CPU_SUPPORTS_64BIT_KERNEL
1611 select CPU_SUPPORTS_HUGEPAGES
1613 MIPS Technologies R5000-series processors other than the Nevada.
1617 depends on SYS_HAS_CPU_R5432
1618 select CPU_SUPPORTS_32BIT_KERNEL
1619 select CPU_SUPPORTS_64BIT_KERNEL
1620 select CPU_SUPPORTS_HUGEPAGES
1624 depends on SYS_HAS_CPU_R5500
1625 select CPU_SUPPORTS_32BIT_KERNEL
1626 select CPU_SUPPORTS_64BIT_KERNEL
1627 select CPU_SUPPORTS_HUGEPAGES
1629 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1634 depends on SYS_HAS_CPU_NEVADA
1635 select CPU_SUPPORTS_32BIT_KERNEL
1636 select CPU_SUPPORTS_64BIT_KERNEL
1637 select CPU_SUPPORTS_HUGEPAGES
1639 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1643 depends on SYS_HAS_CPU_R8000
1644 select CPU_HAS_PREFETCH
1645 select CPU_SUPPORTS_64BIT_KERNEL
1647 MIPS Technologies R8000 processors. Note these processors are
1648 uncommon and the support for them is incomplete.
1652 depends on SYS_HAS_CPU_R10000
1653 select CPU_HAS_PREFETCH
1654 select CPU_SUPPORTS_32BIT_KERNEL
1655 select CPU_SUPPORTS_64BIT_KERNEL
1656 select CPU_SUPPORTS_HIGHMEM
1657 select CPU_SUPPORTS_HUGEPAGES
1659 MIPS Technologies R10000-series processors.
1663 depends on SYS_HAS_CPU_RM7000
1664 select CPU_HAS_PREFETCH
1665 select CPU_SUPPORTS_32BIT_KERNEL
1666 select CPU_SUPPORTS_64BIT_KERNEL
1667 select CPU_SUPPORTS_HIGHMEM
1668 select CPU_SUPPORTS_HUGEPAGES
1672 depends on SYS_HAS_CPU_SB1
1673 select CPU_SUPPORTS_32BIT_KERNEL
1674 select CPU_SUPPORTS_64BIT_KERNEL
1675 select CPU_SUPPORTS_HIGHMEM
1676 select CPU_SUPPORTS_HUGEPAGES
1677 select WEAK_ORDERING
1679 config CPU_CAVIUM_OCTEON
1680 bool "Cavium Octeon processor"
1681 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1682 select CPU_HAS_PREFETCH
1683 select CPU_SUPPORTS_64BIT_KERNEL
1684 select WEAK_ORDERING
1685 select CPU_SUPPORTS_HIGHMEM
1686 select CPU_SUPPORTS_HUGEPAGES
1687 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1688 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1689 select MIPS_L1_CACHE_SHIFT_7
1692 The Cavium Octeon processor is a highly integrated chip containing
1693 many ethernet hardware widgets for networking tasks. The processor
1694 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1695 Full details can be found at http://www.caviumnetworks.com.
1698 bool "Broadcom BMIPS"
1699 depends on SYS_HAS_CPU_BMIPS
1701 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1702 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1703 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1704 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1705 select CPU_SUPPORTS_32BIT_KERNEL
1706 select DMA_NONCOHERENT
1708 select SWAP_IO_SPACE
1709 select WEAK_ORDERING
1710 select CPU_SUPPORTS_HIGHMEM
1711 select CPU_HAS_PREFETCH
1712 select CPU_SUPPORTS_CPUFREQ
1713 select MIPS_EXTERNAL_TIMER
1715 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1718 bool "Netlogic XLR SoC"
1719 depends on SYS_HAS_CPU_XLR
1720 select CPU_SUPPORTS_32BIT_KERNEL
1721 select CPU_SUPPORTS_64BIT_KERNEL
1722 select CPU_SUPPORTS_HIGHMEM
1723 select CPU_SUPPORTS_HUGEPAGES
1724 select WEAK_ORDERING
1725 select WEAK_REORDERING_BEYOND_LLSC
1727 Netlogic Microsystems XLR/XLS processors.
1730 bool "Netlogic XLP SoC"
1731 depends on SYS_HAS_CPU_XLP
1732 select CPU_SUPPORTS_32BIT_KERNEL
1733 select CPU_SUPPORTS_64BIT_KERNEL
1734 select CPU_SUPPORTS_HIGHMEM
1735 select WEAK_ORDERING
1736 select WEAK_REORDERING_BEYOND_LLSC
1737 select CPU_HAS_PREFETCH
1739 select CPU_SUPPORTS_HUGEPAGES
1740 select MIPS_ASID_BITS_VARIABLE
1742 Netlogic Microsystems XLP processors.
1745 config CPU_MIPS32_3_5_FEATURES
1746 bool "MIPS32 Release 3.5 Features"
1747 depends on SYS_HAS_CPU_MIPS32_R3_5
1748 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1750 Choose this option to build a kernel for release 2 or later of the
1751 MIPS32 architecture including features from the 3.5 release such as
1752 support for Enhanced Virtual Addressing (EVA).
1754 config CPU_MIPS32_3_5_EVA
1755 bool "Enhanced Virtual Addressing (EVA)"
1756 depends on CPU_MIPS32_3_5_FEATURES
1760 Choose this option if you want to enable the Enhanced Virtual
1761 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1762 One of its primary benefits is an increase in the maximum size
1763 of lowmem (up to 3GB). If unsure, say 'N' here.
1765 config CPU_MIPS32_R5_FEATURES
1766 bool "MIPS32 Release 5 Features"
1767 depends on SYS_HAS_CPU_MIPS32_R5
1768 depends on CPU_MIPS32_R2
1770 Choose this option to build a kernel for release 2 or later of the
1771 MIPS32 architecture including features from release 5 such as
1772 support for Extended Physical Addressing (XPA).
1774 config CPU_MIPS32_R5_XPA
1775 bool "Extended Physical Addressing (XPA)"
1776 depends on CPU_MIPS32_R5_FEATURES
1778 depends on !PAGE_SIZE_4KB
1779 depends on SYS_SUPPORTS_HIGHMEM
1782 select ARCH_PHYS_ADDR_T_64BIT
1785 Choose this option if you want to enable the Extended Physical
1786 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1787 benefit is to increase physical addressing equal to or greater
1788 than 40 bits. Note that this has the side effect of turning on
1789 64-bit addressing which in turn makes the PTEs 64-bit in size.
1790 If unsure, say 'N' here.
1793 config CPU_NOP_WORKAROUNDS
1796 config CPU_JUMP_WORKAROUNDS
1799 config CPU_LOONGSON2F_WORKAROUNDS
1800 bool "Loongson 2F Workarounds"
1802 select CPU_NOP_WORKAROUNDS
1803 select CPU_JUMP_WORKAROUNDS
1805 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1806 require workarounds. Without workarounds the system may hang
1807 unexpectedly. For more information please refer to the gas
1808 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1810 Loongson 2F03 and later have fixed these issues and no workarounds
1811 are needed. The workarounds have no significant side effect on them
1812 but may decrease the performance of the system so this option should
1813 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1816 If unsure, please say Y.
1817 endif # CPU_LOONGSON2F
1819 config SYS_SUPPORTS_ZBOOT
1821 select HAVE_KERNEL_GZIP
1822 select HAVE_KERNEL_BZIP2
1823 select HAVE_KERNEL_LZ4
1824 select HAVE_KERNEL_LZMA
1825 select HAVE_KERNEL_LZO
1826 select HAVE_KERNEL_XZ
1828 config SYS_SUPPORTS_ZBOOT_UART16550
1830 select SYS_SUPPORTS_ZBOOT
1832 config SYS_SUPPORTS_ZBOOT_UART_PROM
1834 select SYS_SUPPORTS_ZBOOT
1836 config CPU_LOONGSON2
1838 select CPU_SUPPORTS_32BIT_KERNEL
1839 select CPU_SUPPORTS_64BIT_KERNEL
1840 select CPU_SUPPORTS_HIGHMEM
1841 select CPU_SUPPORTS_HUGEPAGES
1843 config CPU_LOONGSON1
1847 select CPU_HAS_PREFETCH
1848 select CPU_SUPPORTS_32BIT_KERNEL
1849 select CPU_SUPPORTS_HIGHMEM
1850 select CPU_SUPPORTS_CPUFREQ
1852 config CPU_BMIPS32_3300
1853 select SMP_UP if SMP
1856 config CPU_BMIPS4350
1858 select SYS_SUPPORTS_SMP
1859 select SYS_SUPPORTS_HOTPLUG_CPU
1861 config CPU_BMIPS4380
1863 select MIPS_L1_CACHE_SHIFT_6
1864 select SYS_SUPPORTS_SMP
1865 select SYS_SUPPORTS_HOTPLUG_CPU
1868 config CPU_BMIPS5000
1870 select MIPS_CPU_SCACHE
1871 select MIPS_L1_CACHE_SHIFT_7
1872 select SYS_SUPPORTS_SMP
1873 select SYS_SUPPORTS_HOTPLUG_CPU
1876 config SYS_HAS_CPU_LOONGSON3
1878 select CPU_SUPPORTS_CPUFREQ
1881 config SYS_HAS_CPU_LOONGSON2E
1884 config SYS_HAS_CPU_LOONGSON2F
1886 select CPU_SUPPORTS_CPUFREQ
1887 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1888 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1890 config SYS_HAS_CPU_LOONGSON1B
1893 config SYS_HAS_CPU_LOONGSON1C
1896 config SYS_HAS_CPU_MIPS32_R1
1899 config SYS_HAS_CPU_MIPS32_R2
1902 config SYS_HAS_CPU_MIPS32_R3_5
1905 config SYS_HAS_CPU_MIPS32_R5
1908 config SYS_HAS_CPU_MIPS32_R6
1911 config SYS_HAS_CPU_MIPS64_R1
1914 config SYS_HAS_CPU_MIPS64_R2
1917 config SYS_HAS_CPU_MIPS64_R6
1920 config SYS_HAS_CPU_R3000
1923 config SYS_HAS_CPU_TX39XX
1926 config SYS_HAS_CPU_VR41XX
1929 config SYS_HAS_CPU_R4300
1932 config SYS_HAS_CPU_R4X00
1935 config SYS_HAS_CPU_TX49XX
1938 config SYS_HAS_CPU_R5000
1941 config SYS_HAS_CPU_R5432
1944 config SYS_HAS_CPU_R5500
1947 config SYS_HAS_CPU_NEVADA
1950 config SYS_HAS_CPU_R8000
1953 config SYS_HAS_CPU_R10000
1956 config SYS_HAS_CPU_RM7000
1959 config SYS_HAS_CPU_SB1
1962 config SYS_HAS_CPU_CAVIUM_OCTEON
1965 config SYS_HAS_CPU_BMIPS
1968 config SYS_HAS_CPU_BMIPS32_3300
1970 select SYS_HAS_CPU_BMIPS
1972 config SYS_HAS_CPU_BMIPS4350
1974 select SYS_HAS_CPU_BMIPS
1976 config SYS_HAS_CPU_BMIPS4380
1978 select SYS_HAS_CPU_BMIPS
1980 config SYS_HAS_CPU_BMIPS5000
1982 select SYS_HAS_CPU_BMIPS
1984 config SYS_HAS_CPU_XLR
1987 config SYS_HAS_CPU_XLP
1990 config MIPS_MALTA_PM
1991 depends on MIPS_MALTA
1997 # CPU may reorder R->R, R->W, W->R, W->W
1998 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2000 config WEAK_ORDERING
2004 # CPU may reorder reads and writes beyond LL/SC
2005 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2007 config WEAK_REORDERING_BEYOND_LLSC
2012 # These two indicate any level of the MIPS32 and MIPS64 architecture
2016 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2020 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2023 # These two indicate the revision of the architecture, either Release 1 or Release 2
2027 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2031 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2037 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2039 select HAVE_ARCH_BITREVERSE
2040 select MIPS_ASID_BITS_VARIABLE
2049 config SYS_SUPPORTS_32BIT_KERNEL
2051 config SYS_SUPPORTS_64BIT_KERNEL
2053 config CPU_SUPPORTS_32BIT_KERNEL
2055 config CPU_SUPPORTS_64BIT_KERNEL
2057 config CPU_SUPPORTS_CPUFREQ
2059 config CPU_SUPPORTS_ADDRWINCFG
2061 config CPU_SUPPORTS_HUGEPAGES
2063 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2065 config MIPS_PGD_C0_CONTEXT
2067 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2070 # Set to y for ptrace access to watch registers.
2072 config HARDWARE_WATCHPOINTS
2074 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2079 prompt "Kernel code model"
2081 You should only select this option if you have a workload that
2082 actually benefits from 64-bit processing or if your machine has
2083 large memory. You will only be presented a single option in this
2084 menu if your system does not support both 32-bit and 64-bit kernels.
2087 bool "32-bit kernel"
2088 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2091 Select this option if you want to build a 32-bit kernel.
2094 bool "64-bit kernel"
2095 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2097 Select this option if you want to build a 64-bit kernel.
2102 bool "KVM Guest Kernel"
2103 depends on BROKEN_ON_SMP
2105 Select this option if building a guest kernel for KVM (Trap & Emulate)
2108 config KVM_GUEST_TIMER_FREQ
2109 int "Count/Compare Timer Frequency (MHz)"
2110 depends on KVM_GUEST
2113 Set this to non-zero if building a guest kernel for KVM to skip RTC
2114 emulation when determining guest CPU Frequency. Instead, the guest's
2115 timer frequency is specified directly.
2117 config MIPS_VA_BITS_48
2118 bool "48 bits virtual memory"
2121 Support a maximum at least 48 bits of application virtual
2122 memory. Default is 40 bits or less, depending on the CPU.
2123 For page sizes 16k and above, this option results in a small
2124 memory overhead for page tables. For 4k page size, a fourth
2125 level of page tables is added which imposes both a memory
2126 overhead as well as slower TLB fault handling.
2131 prompt "Kernel page size"
2132 default PAGE_SIZE_4KB
2134 config PAGE_SIZE_4KB
2136 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2138 This option select the standard 4kB Linux page size. On some
2139 R3000-family processors this is the only available page size. Using
2140 4kB page size will minimize memory consumption and is therefore
2141 recommended for low memory systems.
2143 config PAGE_SIZE_8KB
2145 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2146 depends on !MIPS_VA_BITS_48
2148 Using 8kB page size will result in higher performance kernel at
2149 the price of higher memory consumption. This option is available
2150 only on R8000 and cnMIPS processors. Note that you will need a
2151 suitable Linux distribution to support this.
2153 config PAGE_SIZE_16KB
2155 depends on !CPU_R3000 && !CPU_TX39XX
2157 Using 16kB page size will result in higher performance kernel at
2158 the price of higher memory consumption. This option is available on
2159 all non-R3000 family processors. Note that you will need a suitable
2160 Linux distribution to support this.
2162 config PAGE_SIZE_32KB
2164 depends on CPU_CAVIUM_OCTEON
2165 depends on !MIPS_VA_BITS_48
2167 Using 32kB page size will result in higher performance kernel at
2168 the price of higher memory consumption. This option is available
2169 only on cnMIPS cores. Note that you will need a suitable Linux
2170 distribution to support this.
2172 config PAGE_SIZE_64KB
2174 depends on !CPU_R3000 && !CPU_TX39XX
2176 Using 64kB page size will result in higher performance kernel at
2177 the price of higher memory consumption. This option is available on
2178 all non-R3000 family processor. Not that at the time of this
2179 writing this option is still high experimental.
2183 config FORCE_MAX_ZONEORDER
2184 int "Maximum zone order"
2185 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2186 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2187 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2188 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2189 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2190 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2194 The kernel memory allocator divides physically contiguous memory
2195 blocks into "zones", where each zone is a power of two number of
2196 pages. This option selects the largest power of two that the kernel
2197 keeps in the memory allocator. If you need to allocate very large
2198 blocks of physically contiguous memory, then you may need to
2199 increase this value.
2201 This config option is actually maximum order plus one. For example,
2202 a value of 11 means that the largest free memory block is 2^10 pages.
2204 The page size is not necessarily 4KB. Keep this in mind
2205 when choosing a value for this option.
2210 config IP22_CPU_SCACHE
2215 # Support for a MIPS32 / MIPS64 style S-caches
2217 config MIPS_CPU_SCACHE
2221 config R5000_CPU_SCACHE
2225 config RM7000_CPU_SCACHE
2229 config SIBYTE_DMA_PAGEOPS
2230 bool "Use DMA to clear/copy pages"
2233 Instead of using the CPU to zero and copy pages, use a Data Mover
2234 channel. These DMA channels are otherwise unused by the standard
2235 SiByte Linux port. Seems to give a small performance benefit.
2237 config CPU_HAS_PREFETCH
2240 config CPU_GENERIC_DUMP_TLB
2242 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
2246 default y if !(CPU_R3000 || CPU_TX39XX)
2248 config CPU_R4K_CACHE_TLB
2250 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2253 bool "MIPS MT SMP support (1 TC on each available VPE)"
2255 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2256 select CPU_MIPSR2_IRQ_VI
2257 select CPU_MIPSR2_IRQ_EI
2262 select SYS_SUPPORTS_SMP
2263 select SYS_SUPPORTS_SCHED_SMT
2264 select MIPS_PERF_SHARED_TC_COUNTERS
2266 This is a kernel model which is known as SMVP. This is supported
2267 on cores with the MT ASE and uses the available VPEs to implement
2268 virtual processors which supports SMP. This is equivalent to the
2269 Intel Hyperthreading feature. For further information go to
2270 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2276 bool "SMT (multithreading) scheduler support"
2277 depends on SYS_SUPPORTS_SCHED_SMT
2280 SMT scheduler support improves the CPU scheduler's decision making
2281 when dealing with MIPS MT enabled cores at a cost of slightly
2282 increased overhead in some places. If unsure say N here.
2284 config SYS_SUPPORTS_SCHED_SMT
2287 config SYS_SUPPORTS_MULTITHREADING
2290 config MIPS_MT_FPAFF
2291 bool "Dynamic FPU affinity for FP-intensive threads"
2293 depends on MIPS_MT_SMP
2295 config MIPSR2_TO_R6_EMULATOR
2296 bool "MIPS R2-to-R6 emulator"
2297 depends on CPU_MIPSR6
2300 Choose this option if you want to run non-R6 MIPS userland code.
2301 Even if you say 'Y' here, the emulator will still be disabled by
2302 default. You can enable it using the 'mipsr2emu' kernel option.
2303 The only reason this is a build-time option is to save ~14K from the
2306 config MIPS_VPE_LOADER
2307 bool "VPE loader support."
2308 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2309 select CPU_MIPSR2_IRQ_VI
2310 select CPU_MIPSR2_IRQ_EI
2313 Includes a loader for loading an elf relocatable object
2314 onto another VPE and running it.
2316 config MIPS_VPE_LOADER_CMP
2319 depends on MIPS_VPE_LOADER && MIPS_CMP
2321 config MIPS_VPE_LOADER_MT
2324 depends on MIPS_VPE_LOADER && !MIPS_CMP
2326 config MIPS_VPE_LOADER_TOM
2327 bool "Load VPE program into memory hidden from linux"
2328 depends on MIPS_VPE_LOADER
2331 The loader can use memory that is present but has been hidden from
2332 Linux using the kernel command line option "mem=xxMB". It's up to
2333 you to ensure the amount you put in the option and the space your
2334 program requires is less or equal to the amount physically present.
2336 config MIPS_VPE_APSP_API
2337 bool "Enable support for AP/SP API (RTLX)"
2338 depends on MIPS_VPE_LOADER
2341 config MIPS_VPE_APSP_API_CMP
2344 depends on MIPS_VPE_APSP_API && MIPS_CMP
2346 config MIPS_VPE_APSP_API_MT
2349 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2352 bool "MIPS CMP framework support (DEPRECATED)"
2353 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2356 select SYS_SUPPORTS_SMP
2357 select WEAK_ORDERING
2360 Select this if you are using a bootloader which implements the "CMP
2361 framework" protocol (ie. YAMON) and want your kernel to make use of
2362 its ability to start secondary CPUs.
2364 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2368 bool "MIPS Coherent Processing System support"
2369 depends on SYS_SUPPORTS_MIPS_CPS
2371 select MIPS_CPS_PM if HOTPLUG_CPU
2373 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2374 select SYS_SUPPORTS_HOTPLUG_CPU
2375 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2376 select SYS_SUPPORTS_SMP
2377 select WEAK_ORDERING
2379 Select this if you wish to run an SMP kernel across multiple cores
2380 within a MIPS Coherent Processing System. When this option is
2381 enabled the kernel will probe for other cores and boot them with
2382 no external assistance. It is safe to enable this when hardware
2383 support is unavailable.
2396 config SB1_PASS_2_WORKAROUNDS
2398 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2401 config SB1_PASS_2_1_WORKAROUNDS
2403 depends on CPU_SB1 && CPU_SB1_PASS_2
2407 config ARCH_PHYS_ADDR_T_64BIT
2411 prompt "SmartMIPS or microMIPS ASE support"
2413 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2416 Select this if you want neither microMIPS nor SmartMIPS support
2418 config CPU_HAS_SMARTMIPS
2419 depends on SYS_SUPPORTS_SMARTMIPS
2422 SmartMIPS is a extension of the MIPS32 architecture aimed at
2423 increased security at both hardware and software level for
2424 smartcards. Enabling this option will allow proper use of the
2425 SmartMIPS instructions by Linux applications. However a kernel with
2426 this option will not work on a MIPS core without SmartMIPS core. If
2427 you don't know you probably don't have SmartMIPS and should say N
2430 config CPU_MICROMIPS
2431 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2434 When this option is enabled the kernel will be built using the
2440 bool "Support for the MIPS SIMD Architecture"
2441 depends on CPU_SUPPORTS_MSA
2442 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2444 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2445 and a set of SIMD instructions to operate on them. When this option
2446 is enabled the kernel will support allocating & switching MSA
2447 vector register contexts. If you know that your kernel will only be
2448 running on CPUs which do not support MSA or that your userland will
2449 not be making use of it then you may wish to say N here to reduce
2450 the size & complexity of your kernel.
2464 # Vectored interrupt mode is an R2 feature
2466 config CPU_MIPSR2_IRQ_VI
2470 # Extended interrupt mode is an R2 feature
2472 config CPU_MIPSR2_IRQ_EI
2477 depends on !CPU_R3000
2483 config CPU_DADDI_WORKAROUNDS
2486 config CPU_R4000_WORKAROUNDS
2488 select CPU_R4400_WORKAROUNDS
2490 config CPU_R4400_WORKAROUNDS
2493 config MIPS_ASID_SHIFT
2495 default 6 if CPU_R3000 || CPU_TX39XX
2496 default 4 if CPU_R8000
2499 config MIPS_ASID_BITS
2501 default 0 if MIPS_ASID_BITS_VARIABLE
2502 default 6 if CPU_R3000 || CPU_TX39XX
2505 config MIPS_ASID_BITS_VARIABLE
2509 # - Highmem only makes sense for the 32-bit kernel.
2510 # - The current highmem code will only work properly on physically indexed
2511 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2512 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2513 # moment we protect the user and offer the highmem option only on machines
2514 # where it's known to be safe. This will not offer highmem on a few systems
2515 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2516 # indexed CPUs but we're playing safe.
2517 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2518 # know they might have memory configurations that could make use of highmem
2522 bool "High Memory Support"
2523 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2525 config CPU_SUPPORTS_HIGHMEM
2528 config SYS_SUPPORTS_HIGHMEM
2531 config SYS_SUPPORTS_SMARTMIPS
2534 config SYS_SUPPORTS_MICROMIPS
2537 config SYS_SUPPORTS_MIPS16
2540 This option must be set if a kernel might be executed on a MIPS16-
2541 enabled CPU even if MIPS16 is not actually being used. In other
2542 words, it makes the kernel MIPS16-tolerant.
2544 config CPU_SUPPORTS_MSA
2547 config ARCH_FLATMEM_ENABLE
2549 depends on !NUMA && !CPU_LOONGSON2
2551 config ARCH_DISCONTIGMEM_ENABLE
2553 default y if SGI_IP27
2555 Say Y to support efficient handling of discontiguous physical memory,
2556 for architectures which are either NUMA (Non-Uniform Memory Access)
2557 or have huge holes in the physical address space for other reasons.
2558 See <file:Documentation/vm/numa> for more.
2560 config ARCH_SPARSEMEM_ENABLE
2562 select SPARSEMEM_STATIC
2566 depends on SYS_SUPPORTS_NUMA
2568 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2569 Access). This option improves performance on systems with more
2570 than two nodes; on two node systems it is generally better to
2571 leave it disabled; on single node systems disable this option
2574 config SYS_SUPPORTS_NUMA
2578 bool "Relocatable kernel"
2579 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2581 This builds a kernel image that retains relocation information
2582 so it can be loaded someplace besides the default 1MB.
2583 The relocations make the kernel binary about 15% larger,
2584 but are discarded at runtime
2586 config RELOCATION_TABLE_SIZE
2587 hex "Relocation table size"
2588 depends on RELOCATABLE
2589 range 0x0 0x01000000
2590 default "0x00100000"
2592 A table of relocation data will be appended to the kernel binary
2593 and parsed at boot to fix up the relocated kernel.
2595 This option allows the amount of space reserved for the table to be
2596 adjusted, although the default of 1Mb should be ok in most cases.
2598 The build will fail and a valid size suggested if this is too small.
2600 If unsure, leave at the default value.
2602 config RANDOMIZE_BASE
2603 bool "Randomize the address of the kernel image"
2604 depends on RELOCATABLE
2606 Randomizes the physical and virtual address at which the
2607 kernel image is loaded, as a security feature that
2608 deters exploit attempts relying on knowledge of the location
2609 of kernel internals.
2611 Entropy is generated using any coprocessor 0 registers available.
2613 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2617 config RANDOMIZE_BASE_MAX_OFFSET
2618 hex "Maximum kASLR offset" if EXPERT
2619 depends on RANDOMIZE_BASE
2620 range 0x0 0x40000000 if EVA || 64BIT
2621 range 0x0 0x08000000
2622 default "0x01000000"
2624 When kASLR is active, this provides the maximum offset that will
2625 be applied to the kernel image. It should be set according to the
2626 amount of physical RAM available in the target system minus
2627 PHYSICAL_START and must be a power of 2.
2629 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2630 EVA or 64-bit. The default is 16Mb.
2635 depends on NEED_MULTIPLE_NODES
2637 config HW_PERF_EVENTS
2638 bool "Enable hardware performance counter support for perf events"
2639 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2642 Enable hardware performance counter support for perf events. If
2643 disabled, perf events will use software events only.
2648 bool "Multi-Processing support"
2649 depends on SYS_SUPPORTS_SMP
2651 This enables support for systems with more than one CPU. If you have
2652 a system with only one CPU, say N. If you have a system with more
2653 than one CPU, say Y.
2655 If you say N here, the kernel will run on uni- and multiprocessor
2656 machines, but will use only one CPU of a multiprocessor machine. If
2657 you say Y here, the kernel will run on many, but not all,
2658 uniprocessor machines. On a uniprocessor machine, the kernel
2659 will run faster if you say N here.
2661 People using multiprocessor machines who say Y here should also say
2662 Y to "Enhanced Real Time Clock Support", below.
2664 See also the SMP-HOWTO available at
2665 <http://www.tldp.org/docs.html#howto>.
2667 If you don't know what to do here, say N.
2670 bool "Support for hot-pluggable CPUs"
2671 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2673 Say Y here to allow turning CPUs off and on. CPUs can be
2674 controlled through /sys/devices/system/cpu.
2675 (Note: power management support will enable this option
2676 automatically on SMP systems. )
2677 Say N if you want to disable CPU hotplug.
2682 config SYS_SUPPORTS_MIPS_CMP
2685 config SYS_SUPPORTS_MIPS_CPS
2688 config SYS_SUPPORTS_SMP
2691 config NR_CPUS_DEFAULT_4
2694 config NR_CPUS_DEFAULT_8
2697 config NR_CPUS_DEFAULT_16
2700 config NR_CPUS_DEFAULT_32
2703 config NR_CPUS_DEFAULT_64
2707 int "Maximum number of CPUs (2-256)"
2710 default "4" if NR_CPUS_DEFAULT_4
2711 default "8" if NR_CPUS_DEFAULT_8
2712 default "16" if NR_CPUS_DEFAULT_16
2713 default "32" if NR_CPUS_DEFAULT_32
2714 default "64" if NR_CPUS_DEFAULT_64
2716 This allows you to specify the maximum number of CPUs which this
2717 kernel will support. The maximum supported value is 32 for 32-bit
2718 kernel and 64 for 64-bit kernels; the minimum value which makes
2719 sense is 1 for Qemu (useful only for kernel debugging purposes)
2720 and 2 for all others.
2722 This is purely to save memory - each supported CPU adds
2723 approximately eight kilobytes to the kernel image. For best
2724 performance should round up your number of processors to the next
2727 config MIPS_PERF_SHARED_TC_COUNTERS
2730 config MIPS_NR_CPU_NR_MAP_1024
2733 config MIPS_NR_CPU_NR_MAP
2736 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2737 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2740 # Timer Interrupt Frequency Configuration
2744 prompt "Timer frequency"
2747 Allows the configuration of the timer frequency.
2750 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2753 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2756 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2759 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2762 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2765 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2768 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2771 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2775 config SYS_SUPPORTS_24HZ
2778 config SYS_SUPPORTS_48HZ
2781 config SYS_SUPPORTS_100HZ
2784 config SYS_SUPPORTS_128HZ
2787 config SYS_SUPPORTS_250HZ
2790 config SYS_SUPPORTS_256HZ
2793 config SYS_SUPPORTS_1000HZ
2796 config SYS_SUPPORTS_1024HZ
2799 config SYS_SUPPORTS_ARBIT_HZ
2801 default y if !SYS_SUPPORTS_24HZ && \
2802 !SYS_SUPPORTS_48HZ && \
2803 !SYS_SUPPORTS_100HZ && \
2804 !SYS_SUPPORTS_128HZ && \
2805 !SYS_SUPPORTS_250HZ && \
2806 !SYS_SUPPORTS_256HZ && \
2807 !SYS_SUPPORTS_1000HZ && \
2808 !SYS_SUPPORTS_1024HZ
2814 default 100 if HZ_100
2815 default 128 if HZ_128
2816 default 250 if HZ_250
2817 default 256 if HZ_256
2818 default 1000 if HZ_1000
2819 default 1024 if HZ_1024
2822 def_bool HIGH_RES_TIMERS
2824 source "kernel/Kconfig.preempt"
2827 bool "Kexec system call"
2830 kexec is a system call that implements the ability to shutdown your
2831 current kernel, and to start another kernel. It is like a reboot
2832 but it is independent of the system firmware. And like a reboot
2833 you can start any kernel with it, not just Linux.
2835 The name comes from the similarity to the exec system call.
2837 It is an ongoing process to be certain the hardware in a machine
2838 is properly shutdown, so do not be surprised if this code does not
2839 initially work for you. As of this writing the exact hardware
2840 interface is strongly in flux, so no good recommendation can be
2844 bool "Kernel crash dumps"
2846 Generate crash dump after being started by kexec.
2847 This should be normally only set in special crash dump kernels
2848 which are loaded in the main kernel with kexec-tools into
2849 a specially reserved region and then later executed after
2850 a crash by kdump/kexec. The crash dump kernel must be compiled
2851 to a memory address not used by the main kernel or firmware using
2854 config PHYSICAL_START
2855 hex "Physical address where the kernel is loaded"
2856 default "0xffffffff84000000" if 64BIT
2857 default "0x84000000" if 32BIT
2858 depends on CRASH_DUMP
2860 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2861 If you plan to use kernel for capturing the crash dump change
2862 this value to start of the reserved region (the "X" value as
2863 specified in the "crashkernel=YM@XM" command line boot parameter
2864 passed to the panic-ed kernel).
2867 bool "Enable seccomp to safely compute untrusted bytecode"
2871 This kernel feature is useful for number crunching applications
2872 that may need to compute untrusted bytecode during their
2873 execution. By using pipes or other transports made available to
2874 the process as file descriptors supporting the read/write
2875 syscalls, it's possible to isolate those applications in
2876 their own address space using seccomp. Once seccomp is
2877 enabled via /proc/<pid>/seccomp, it cannot be disabled
2878 and the task is only allowed to execute a few safe syscalls
2879 defined by each seccomp mode.
2881 If unsure, say Y. Only embedded should say N here.
2883 config MIPS_O32_FP64_SUPPORT
2884 bool "Support for O32 binaries using 64-bit FP"
2885 depends on 32BIT || MIPS32_O32
2887 When this is enabled, the kernel will support use of 64-bit floating
2888 point registers with binaries using the O32 ABI along with the
2889 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2890 32-bit MIPS systems this support is at the cost of increasing the
2891 size and complexity of the compiled FPU emulator. Thus if you are
2892 running a MIPS32 system and know that none of your userland binaries
2893 will require 64-bit floating point, you may wish to reduce the size
2894 of your kernel & potentially improve FP emulation performance by
2897 Although binutils currently supports use of this flag the details
2898 concerning its effect upon the O32 ABI in userland are still being
2899 worked on. In order to avoid userland becoming dependant upon current
2900 behaviour before the details have been finalised, this option should
2901 be considered experimental and only enabled by those working upon
2909 select OF_EARLY_FLATTREE
2916 prompt "Kernel appended dtb support" if USE_OF
2917 default MIPS_NO_APPENDED_DTB
2919 config MIPS_NO_APPENDED_DTB
2922 Do not enable appended dtb support.
2924 config MIPS_ELF_APPENDED_DTB
2927 With this option, the boot code will look for a device tree binary
2928 DTB) included in the vmlinux ELF section .appended_dtb. By default
2929 it is empty and the DTB can be appended using binutils command
2932 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2934 This is meant as a backward compatiblity convenience for those
2935 systems with a bootloader that can't be upgraded to accommodate
2936 the documented boot protocol using a device tree.
2938 config MIPS_RAW_APPENDED_DTB
2939 bool "vmlinux.bin or vmlinuz.bin"
2941 With this option, the boot code will look for a device tree binary
2942 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2943 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2945 This is meant as a backward compatibility convenience for those
2946 systems with a bootloader that can't be upgraded to accommodate
2947 the documented boot protocol using a device tree.
2949 Beware that there is very little in terms of protection against
2950 this option being confused by leftover garbage in memory that might
2951 look like a DTB header after a reboot if no actual DTB is appended
2952 to vmlinux.bin. Do not leave this option active in a production kernel
2953 if you don't intend to always append a DTB.
2957 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2958 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2961 default MIPS_CMDLINE_FROM_BOOTLOADER
2963 config MIPS_CMDLINE_FROM_DTB
2965 bool "Dtb kernel arguments if available"
2967 config MIPS_CMDLINE_DTB_EXTEND
2969 bool "Extend dtb kernel arguments with bootloader arguments"
2971 config MIPS_CMDLINE_FROM_BOOTLOADER
2972 bool "Bootloader kernel arguments if available"
2974 config MIPS_CMDLINE_BUILTIN_EXTEND
2975 depends on CMDLINE_BOOL
2976 bool "Extend builtin kernel arguments with bootloader arguments"
2981 config LOCKDEP_SUPPORT
2985 config STACKTRACE_SUPPORT
2989 config HAVE_LATENCYTOP_SUPPORT
2993 config PGTABLE_LEVELS
2995 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
2996 default 3 if 64BIT && !PAGE_SIZE_64KB
2999 source "init/Kconfig"
3001 source "kernel/Kconfig.freezer"
3003 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3011 bool "Support for PCI controller"
3012 depends on HW_HAS_PCI
3015 Find out whether you have a PCI motherboard. PCI is the name of a
3016 bus system, i.e. the way the CPU talks to the other stuff inside
3017 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
3021 bool "Support for HT-linked PCI"
3023 depends on CPU_LOONGSON3
3027 Loongson family machines use Hyper-Transport bus for inter-core
3028 connection and device connection. The PCI bus is a subordinate
3029 linked at HT. Choose Y for Loongson-3 based machines.
3034 config PCI_DOMAINS_GENERIC
3037 config PCI_DRIVERS_GENERIC
3038 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3041 config PCI_DRIVERS_LEGACY
3042 def_bool !PCI_DRIVERS_GENERIC
3043 select NO_GENERIC_PCI_IOPORT_MAP
3045 source "drivers/pci/Kconfig"
3048 # ISA support is now enabled via select. Too many systems still have the one
3049 # or other ISA chip on the board that users don't know about so don't expect
3050 # users to choose the right thing ...
3057 depends on HW_HAS_EISA
3059 select GENERIC_ISA_DMA
3061 The Extended Industry Standard Architecture (EISA) bus was
3062 developed as an open alternative to the IBM MicroChannel bus.
3064 The EISA bus provided some of the features of the IBM MicroChannel
3065 bus while maintaining backward compatibility with cards made for
3066 the older ISA bus. The EISA bus saw limited use between 1988 and
3067 1995 when it was made obsolete by the PCI bus.
3069 Say Y here if you are building a kernel for an EISA-based machine.
3073 source "drivers/eisa/Kconfig"
3076 bool "TURBOchannel support"
3077 depends on MACH_DECSTATION
3079 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3080 processors. TURBOchannel programming specifications are available
3082 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3084 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3085 Linux driver support status is documented at:
3086 <http://www.linux-mips.org/wiki/DECstation>
3092 config ARCH_MMAP_RND_BITS_MIN
3096 config ARCH_MMAP_RND_BITS_MAX
3100 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3103 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3110 select MIPS_EXTERNAL_TIMER
3118 source "drivers/pcmcia/Kconfig"
3121 tristate "RapidIO support"
3125 If you say Y here, the kernel will include drivers and
3126 infrastructure code to support RapidIO interconnect devices.
3128 source "drivers/rapidio/Kconfig"
3132 menu "Executable file formats"
3134 source "fs/Kconfig.binfmt"
3139 config MIPS32_COMPAT
3145 config SYSVIPC_COMPAT
3149 bool "Kernel support for o32 binaries"
3151 select ARCH_WANT_OLD_COMPAT_IPC
3153 select MIPS32_COMPAT
3154 select SYSVIPC_COMPAT if SYSVIPC
3156 Select this option if you want to run o32 binaries. These are pure
3157 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3158 existing binaries are in this format.
3163 bool "Kernel support for n32 binaries"
3166 select MIPS32_COMPAT
3167 select SYSVIPC_COMPAT if SYSVIPC
3169 Select this option if you want to run n32 binaries. These are
3170 64-bit binaries using 32-bit quantities for addressing and certain
3171 data that would normally be 64-bit. They are used in special
3178 default y if MIPS32_O32 || MIPS32_N32
3183 menu "Power management options"
3185 config ARCH_HIBERNATION_POSSIBLE
3187 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3189 config ARCH_SUSPEND_POSSIBLE
3191 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3193 source "kernel/power/Kconfig"
3197 config MIPS_EXTERNAL_TIMER
3200 menu "CPU Power Management"
3202 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3203 source "drivers/cpufreq/Kconfig"
3206 source "drivers/cpuidle/Kconfig"
3210 source "net/Kconfig"
3212 source "drivers/Kconfig"
3214 source "drivers/firmware/Kconfig"
3218 source "arch/mips/Kconfig.debug"
3220 source "security/Kconfig"
3222 source "crypto/Kconfig"
3224 source "lib/Kconfig"
3226 source "arch/mips/kvm/Kconfig"