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_MIGHT_HAVE_PC_PARPORT
11 select ARCH_MIGHT_HAVE_PC_SERIO
12 select ARCH_SUPPORTS_UPROBES
13 select ARCH_USE_BUILTIN_BSWAP
14 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
15 select ARCH_USE_QUEUED_RWLOCKS
16 select ARCH_USE_QUEUED_SPINLOCKS
17 select ARCH_WANT_IPC_PARSE_VERSION
18 select BUILDTIME_EXTABLE_SORT
19 select CLONE_BACKWARDS
20 select CPU_PM if CPU_IDLE
21 select GENERIC_ATOMIC64 if !64BIT
22 select GENERIC_CLOCKEVENTS
23 select GENERIC_CMOS_UPDATE
24 select GENERIC_CPU_AUTOPROBE
25 select GENERIC_IRQ_PROBE
26 select GENERIC_IRQ_SHOW
27 select GENERIC_PCI_IOMAP
28 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
29 select GENERIC_SMP_IDLE_THREAD
30 select GENERIC_TIME_VSYSCALL
31 select HANDLE_DOMAIN_IRQ
32 select HAVE_ARCH_JUMP_LABEL
34 select HAVE_ARCH_MMAP_RND_BITS if MMU
35 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
36 select HAVE_ARCH_SECCOMP_FILTER
37 select HAVE_ARCH_TRACEHOOK
38 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
39 select HAVE_CBPF_JIT if (!64BIT && !CPU_MICROMIPS)
40 select HAVE_EBPF_JIT if (64BIT && !CPU_MICROMIPS)
41 select HAVE_CC_STACKPROTECTOR
42 select HAVE_CONTEXT_TRACKING
43 select HAVE_COPY_THREAD_TLS
44 select HAVE_C_RECORDMCOUNT
45 select HAVE_DEBUG_KMEMLEAK
46 select HAVE_DEBUG_STACKOVERFLOW
47 select HAVE_DMA_API_DEBUG
48 select HAVE_DMA_CONTIGUOUS
49 select HAVE_DYNAMIC_FTRACE
50 select HAVE_EXIT_THREAD
51 select HAVE_FTRACE_MCOUNT_RECORD
52 select HAVE_FUNCTION_GRAPH_TRACER
53 select HAVE_FUNCTION_TRACER
54 select HAVE_GENERIC_DMA_COHERENT
56 select HAVE_IRQ_EXIT_ON_IRQ_STACK
57 select HAVE_IRQ_TIME_ACCOUNTING
59 select HAVE_KRETPROBES
61 select HAVE_MEMBLOCK_NODE_MAP
62 select HAVE_MOD_ARCH_SPECIFIC
65 select HAVE_PERF_EVENTS
66 select HAVE_REGS_AND_STACK_ACCESS_API
67 select HAVE_SYSCALL_TRACEPOINTS
68 select HAVE_VIRT_CPU_ACCOUNTING_GEN
69 select IRQ_FORCED_THREADING
70 select MODULES_USE_ELF_RELA if MODULES && 64BIT
71 select MODULES_USE_ELF_REL if MODULES
72 select PERF_USE_VMALLOC
73 select RTC_LIB if !MACH_LOONGSON64
74 select SYSCTL_EXCEPTION_TRACE
77 menu "Machine selection"
84 bool "Generic board-agnostic MIPS kernel"
88 select CLKSRC_MIPS_GIC
90 select CPU_MIPSR2_IRQ_VI
91 select CPU_MIPSR2_IRQ_EI
93 select DMA_PERDEV_COHERENT
97 select MIPS_CPU_SCACHE
99 select MIPS_L1_CACHE_SHIFT_7
100 select NO_EXCEPT_FILL
101 select PCI_DRIVERS_GENERIC
105 select SYS_HAS_CPU_MIPS32_R1
106 select SYS_HAS_CPU_MIPS32_R2
107 select SYS_HAS_CPU_MIPS32_R6
108 select SYS_HAS_CPU_MIPS64_R1
109 select SYS_HAS_CPU_MIPS64_R2
110 select SYS_HAS_CPU_MIPS64_R6
111 select SYS_SUPPORTS_32BIT_KERNEL
112 select SYS_SUPPORTS_64BIT_KERNEL
113 select SYS_SUPPORTS_BIG_ENDIAN
114 select SYS_SUPPORTS_HIGHMEM
115 select SYS_SUPPORTS_LITTLE_ENDIAN
116 select SYS_SUPPORTS_MICROMIPS
117 select SYS_SUPPORTS_MIPS_CPS
118 select SYS_SUPPORTS_MIPS16
119 select SYS_SUPPORTS_MULTITHREADING
120 select SYS_SUPPORTS_RELOCATABLE
121 select SYS_SUPPORTS_SMARTMIPS
122 select USB_EHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
123 select USB_EHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
124 select USB_OHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
125 select USB_OHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
126 select USB_UHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
127 select USB_UHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
130 Select this to build a kernel which aims to support multiple boards,
131 generally using a flattened device tree passed from the bootloader
132 using the boot protocol defined in the UHI (Unified Hosting
133 Interface) specification.
136 bool "Alchemy processor based machines"
137 select ARCH_PHYS_ADDR_T_64BIT
141 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
142 select SYS_HAS_CPU_MIPS32_R1
143 select SYS_SUPPORTS_32BIT_KERNEL
144 select SYS_SUPPORTS_APM_EMULATION
146 select SYS_SUPPORTS_ZBOOT
150 bool "Texas Instruments AR7"
152 select DMA_NONCOHERENT
156 select NO_EXCEPT_FILL
158 select SYS_HAS_CPU_MIPS32_R1
159 select SYS_HAS_EARLY_PRINTK
160 select SYS_SUPPORTS_32BIT_KERNEL
161 select SYS_SUPPORTS_LITTLE_ENDIAN
162 select SYS_SUPPORTS_MIPS16
163 select SYS_SUPPORTS_ZBOOT_UART16550
168 Support for the Texas Instruments AR7 System-on-a-Chip
169 family: TNETD7100, 7200 and 7300.
172 bool "Atheros AR231x/AR531x SoC support"
175 select DMA_NONCOHERENT
178 select SYS_HAS_CPU_MIPS32_R1
179 select SYS_SUPPORTS_BIG_ENDIAN
180 select SYS_SUPPORTS_32BIT_KERNEL
181 select SYS_HAS_EARLY_PRINTK
183 Support for Atheros AR231x and Atheros AR531x based boards
186 bool "Atheros AR71XX/AR724X/AR913X based boards"
187 select ARCH_HAS_RESET_CONTROLLER
191 select DMA_NONCOHERENT
198 select SYS_HAS_CPU_MIPS32_R2
199 select SYS_HAS_EARLY_PRINTK
200 select SYS_SUPPORTS_32BIT_KERNEL
201 select SYS_SUPPORTS_BIG_ENDIAN
202 select SYS_SUPPORTS_MIPS16
203 select SYS_SUPPORTS_ZBOOT_UART_PROM
206 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
209 bool "Broadcom Generic BMIPS kernel"
211 select NO_EXCEPT_FILL
217 select BCM6345_L1_IRQ
218 select BCM7038_L1_IRQ
219 select BCM7120_L2_IRQ
220 select BRCMSTB_L2_IRQ
222 select DMA_NONCOHERENT
223 select SYS_SUPPORTS_32BIT_KERNEL
224 select SYS_SUPPORTS_LITTLE_ENDIAN
225 select SYS_SUPPORTS_BIG_ENDIAN
226 select SYS_SUPPORTS_HIGHMEM
227 select SYS_HAS_CPU_BMIPS32_3300
228 select SYS_HAS_CPU_BMIPS4350
229 select SYS_HAS_CPU_BMIPS4380
230 select SYS_HAS_CPU_BMIPS5000
232 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
233 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
234 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
235 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
237 Build a generic DT-based kernel image that boots on select
238 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
239 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
240 must be set appropriately for your board.
243 bool "Broadcom BCM47XX based boards"
247 select DMA_NONCOHERENT
250 select SYS_HAS_CPU_MIPS32_R1
251 select NO_EXCEPT_FILL
252 select SYS_SUPPORTS_32BIT_KERNEL
253 select SYS_SUPPORTS_LITTLE_ENDIAN
254 select SYS_SUPPORTS_MIPS16
255 select SYS_HAS_EARLY_PRINTK
256 select USE_GENERIC_EARLY_PRINTK_8250
258 select LEDS_GPIO_REGISTER
262 Support for BCM47XX based boards
265 bool "Broadcom BCM63XX based boards"
270 select DMA_NONCOHERENT
272 select SYS_SUPPORTS_32BIT_KERNEL
273 select SYS_SUPPORTS_BIG_ENDIAN
274 select SYS_HAS_EARLY_PRINTK
278 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_16
921 select MTD_COMPLEX_MAPPINGS
922 select SYS_SUPPORTS_RELOCATABLE
924 This option supports all of the Octeon reference boards from Cavium
925 Networks. It builds a kernel that dynamically determines the Octeon
926 CPU type and supports all known board reference implementations.
927 Some of the supported boards are:
934 Say Y here for most Octeon reference boards.
937 bool "Netlogic XLR/XLS based systems"
940 select SYS_HAS_CPU_XLR
941 select SYS_SUPPORTS_SMP
944 select SYS_SUPPORTS_32BIT_KERNEL
945 select SYS_SUPPORTS_64BIT_KERNEL
946 select ARCH_PHYS_ADDR_T_64BIT
947 select SYS_SUPPORTS_BIG_ENDIAN
948 select SYS_SUPPORTS_HIGHMEM
950 select NR_CPUS_DEFAULT_32
954 select ZONE_DMA32 if 64BIT
956 select SYS_HAS_EARLY_PRINTK
957 select SYS_SUPPORTS_ZBOOT
958 select SYS_SUPPORTS_ZBOOT_UART16550
960 Support for systems based on Netlogic XLR and XLS processors.
961 Say Y here if you have a XLR or XLS based board.
964 bool "Netlogic XLP based systems"
967 select SYS_HAS_CPU_XLP
968 select SYS_SUPPORTS_SMP
970 select SYS_SUPPORTS_32BIT_KERNEL
971 select SYS_SUPPORTS_64BIT_KERNEL
972 select ARCH_PHYS_ADDR_T_64BIT
974 select SYS_SUPPORTS_BIG_ENDIAN
975 select SYS_SUPPORTS_LITTLE_ENDIAN
976 select SYS_SUPPORTS_HIGHMEM
978 select NR_CPUS_DEFAULT_32
982 select ZONE_DMA32 if 64BIT
984 select SYS_HAS_EARLY_PRINTK
986 select SYS_SUPPORTS_ZBOOT
987 select SYS_SUPPORTS_ZBOOT_UART16550
989 This board is based on Netlogic XLP Processor.
990 Say Y here if you have a XLP based board.
993 bool "Para-Virtualized guest system"
997 select SYS_SUPPORTS_64BIT_KERNEL
998 select SYS_SUPPORTS_32BIT_KERNEL
999 select SYS_SUPPORTS_BIG_ENDIAN
1000 select SYS_SUPPORTS_SMP
1001 select NR_CPUS_DEFAULT_4
1002 select SYS_HAS_EARLY_PRINTK
1003 select SYS_HAS_CPU_MIPS32_R2
1004 select SYS_HAS_CPU_MIPS64_R2
1005 select SYS_HAS_CPU_CAVIUM_OCTEON
1007 select SWAP_IO_SPACE
1009 This option supports guest running under ????
1013 source "arch/mips/alchemy/Kconfig"
1014 source "arch/mips/ath25/Kconfig"
1015 source "arch/mips/ath79/Kconfig"
1016 source "arch/mips/bcm47xx/Kconfig"
1017 source "arch/mips/bcm63xx/Kconfig"
1018 source "arch/mips/bmips/Kconfig"
1019 source "arch/mips/generic/Kconfig"
1020 source "arch/mips/jazz/Kconfig"
1021 source "arch/mips/jz4740/Kconfig"
1022 source "arch/mips/lantiq/Kconfig"
1023 source "arch/mips/lasat/Kconfig"
1024 source "arch/mips/pic32/Kconfig"
1025 source "arch/mips/pistachio/Kconfig"
1026 source "arch/mips/pmcs-msp71xx/Kconfig"
1027 source "arch/mips/ralink/Kconfig"
1028 source "arch/mips/sgi-ip27/Kconfig"
1029 source "arch/mips/sibyte/Kconfig"
1030 source "arch/mips/txx9/Kconfig"
1031 source "arch/mips/vr41xx/Kconfig"
1032 source "arch/mips/cavium-octeon/Kconfig"
1033 source "arch/mips/loongson32/Kconfig"
1034 source "arch/mips/loongson64/Kconfig"
1035 source "arch/mips/netlogic/Kconfig"
1036 source "arch/mips/paravirt/Kconfig"
1037 source "arch/mips/xilfpga/Kconfig"
1041 config RWSEM_GENERIC_SPINLOCK
1045 config RWSEM_XCHGADD_ALGORITHM
1048 config GENERIC_HWEIGHT
1052 config GENERIC_CALIBRATE_DELAY
1056 config SCHED_OMIT_FRAME_POINTER
1061 # Select some configuration options automatically based on user selections.
1066 config ARCH_MAY_HAVE_PC_FDC
1102 config MIPS_CLOCK_VSYSCALL
1103 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1112 config ARCH_DMA_ADDR_T_64BIT
1113 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1115 config ARCH_SUPPORTS_UPROBES
1118 config DMA_MAYBE_COHERENT
1119 select DMA_NONCOHERENT
1122 config DMA_PERDEV_COHERENT
1124 select DMA_MAYBE_COHERENT
1129 config DMA_NONCOHERENT
1131 select NEED_DMA_MAP_STATE
1133 config NEED_DMA_MAP_STATE
1136 config SYS_HAS_EARLY_PRINTK
1139 config SYS_SUPPORTS_HOTPLUG_CPU
1142 config MIPS_BONITO64
1157 config NO_IOPORT_MAP
1163 config GENERIC_ISA_DMA
1165 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1168 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1170 select GENERIC_ISA_DMA
1175 config HOLES_IN_ZONE
1178 config SYS_SUPPORTS_RELOCATABLE
1181 Selected if the platform supports relocating the kernel.
1182 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1183 to allow access to command line and entropy sources.
1185 config MIPS_CBPF_JIT
1187 depends on BPF_JIT && HAVE_CBPF_JIT
1189 config MIPS_EBPF_JIT
1191 depends on BPF_JIT && HAVE_EBPF_JIT
1195 # Endianness selection. Sufficiently obscure so many users don't know what to
1196 # answer,so we try hard to limit the available choices. Also the use of a
1197 # choice statement should be more obvious to the user.
1200 prompt "Endianness selection"
1202 Some MIPS machines can be configured for either little or big endian
1203 byte order. These modes require different kernels and a different
1204 Linux distribution. In general there is one preferred byteorder for a
1205 particular system but some systems are just as commonly used in the
1206 one or the other endianness.
1208 config CPU_BIG_ENDIAN
1210 depends on SYS_SUPPORTS_BIG_ENDIAN
1212 config CPU_LITTLE_ENDIAN
1213 bool "Little endian"
1214 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1221 config SYS_SUPPORTS_APM_EMULATION
1224 config SYS_SUPPORTS_BIG_ENDIAN
1227 config SYS_SUPPORTS_LITTLE_ENDIAN
1230 config SYS_SUPPORTS_HUGETLBFS
1232 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1235 config MIPS_HUGE_TLB_SUPPORT
1236 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1253 config PCI_GT64XXX_PCI0
1256 config NO_EXCEPT_FILL
1263 select DMA_NONCOHERENT
1265 select SWAP_IO_SPACE
1266 select SYS_HAS_CPU_R5500
1267 select SYS_SUPPORTS_32BIT_KERNEL
1268 select SYS_SUPPORTS_64BIT_KERNEL
1269 select SYS_SUPPORTS_BIG_ENDIAN
1276 select DMA_NONCOHERENT
1277 select SYS_HAS_CPU_MIPS32_R2
1278 select SYS_SUPPORTS_32BIT_KERNEL
1279 select SYS_SUPPORTS_LITTLE_ENDIAN
1280 select SYS_SUPPORTS_BIG_ENDIAN
1281 select SYS_SUPPORTS_MIPS16
1282 select CPU_MIPSR2_IRQ_VI
1291 config SWAP_IO_SPACE
1294 config SGI_HAS_INDYDOG
1306 config SGI_HAS_ZILOG
1309 config SGI_HAS_I8042
1312 config DEFAULT_SGI_PARTITION
1324 config MIPS_L1_CACHE_SHIFT_4
1327 config MIPS_L1_CACHE_SHIFT_5
1330 config MIPS_L1_CACHE_SHIFT_6
1333 config MIPS_L1_CACHE_SHIFT_7
1336 config MIPS_L1_CACHE_SHIFT
1338 default "7" if MIPS_L1_CACHE_SHIFT_7
1339 default "6" if MIPS_L1_CACHE_SHIFT_6
1340 default "5" if MIPS_L1_CACHE_SHIFT_5
1341 default "4" if MIPS_L1_CACHE_SHIFT_4
1344 config HAVE_STD_PC_SERIAL_PORT
1348 bool "ARC console support"
1349 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1353 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1358 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1367 menu "CPU selection"
1373 config CPU_LOONGSON3
1374 bool "Loongson 3 CPU"
1375 depends on SYS_HAS_CPU_LOONGSON3
1376 select CPU_SUPPORTS_64BIT_KERNEL
1377 select CPU_SUPPORTS_HIGHMEM
1378 select CPU_SUPPORTS_HUGEPAGES
1379 select WEAK_ORDERING
1380 select WEAK_REORDERING_BEYOND_LLSC
1381 select MIPS_PGD_C0_CONTEXT
1382 select MIPS_L1_CACHE_SHIFT_6
1385 The Loongson 3 processor implements the MIPS64R2 instruction
1386 set with many extensions.
1388 config LOONGSON3_ENHANCEMENT
1389 bool "New Loongson 3 CPU Enhancements"
1392 select CPU_HAS_PREFETCH
1393 depends on CPU_LOONGSON3
1395 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1396 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1397 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1398 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1399 Fast TLB refill support, etc.
1401 This option enable those enhancements which are not probed at run
1402 time. If you want a generic kernel to run on all Loongson 3 machines,
1403 please say 'N' here. If you want a high-performance kernel to run on
1404 new Loongson 3 machines only, please say 'Y' here.
1406 config CPU_LOONGSON2E
1408 depends on SYS_HAS_CPU_LOONGSON2E
1409 select CPU_LOONGSON2
1411 The Loongson 2E processor implements the MIPS III instruction set
1412 with many extensions.
1414 It has an internal FPGA northbridge, which is compatible to
1417 config CPU_LOONGSON2F
1419 depends on SYS_HAS_CPU_LOONGSON2F
1420 select CPU_LOONGSON2
1423 The Loongson 2F processor implements the MIPS III instruction set
1424 with many extensions.
1426 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1427 have a similar programming interface with FPGA northbridge used in
1430 config CPU_LOONGSON1B
1432 depends on SYS_HAS_CPU_LOONGSON1B
1433 select CPU_LOONGSON1
1434 select LEDS_GPIO_REGISTER
1436 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1437 release 2 instruction set.
1439 config CPU_LOONGSON1C
1441 depends on SYS_HAS_CPU_LOONGSON1C
1442 select CPU_LOONGSON1
1443 select LEDS_GPIO_REGISTER
1445 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1446 release 2 instruction set.
1448 config CPU_MIPS32_R1
1449 bool "MIPS32 Release 1"
1450 depends on SYS_HAS_CPU_MIPS32_R1
1451 select CPU_HAS_PREFETCH
1452 select CPU_SUPPORTS_32BIT_KERNEL
1453 select CPU_SUPPORTS_HIGHMEM
1455 Choose this option to build a kernel for release 1 or later of the
1456 MIPS32 architecture. Most modern embedded systems with a 32-bit
1457 MIPS processor are based on a MIPS32 processor. If you know the
1458 specific type of processor in your system, choose those that one
1459 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1460 Release 2 of the MIPS32 architecture is available since several
1461 years so chances are you even have a MIPS32 Release 2 processor
1462 in which case you should choose CPU_MIPS32_R2 instead for better
1465 config CPU_MIPS32_R2
1466 bool "MIPS32 Release 2"
1467 depends on SYS_HAS_CPU_MIPS32_R2
1468 select CPU_HAS_PREFETCH
1469 select CPU_SUPPORTS_32BIT_KERNEL
1470 select CPU_SUPPORTS_HIGHMEM
1471 select CPU_SUPPORTS_MSA
1474 Choose this option to build a kernel for release 2 or later of the
1475 MIPS32 architecture. Most modern embedded systems with a 32-bit
1476 MIPS processor are based on a MIPS32 processor. If you know the
1477 specific type of processor in your system, choose those that one
1478 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1480 config CPU_MIPS32_R6
1481 bool "MIPS32 Release 6"
1482 depends on SYS_HAS_CPU_MIPS32_R6
1483 select CPU_HAS_PREFETCH
1484 select CPU_SUPPORTS_32BIT_KERNEL
1485 select CPU_SUPPORTS_HIGHMEM
1486 select CPU_SUPPORTS_MSA
1489 select MIPS_O32_FP64_SUPPORT
1491 Choose this option to build a kernel for release 6 or later of the
1492 MIPS32 architecture. New MIPS processors, starting with the Warrior
1493 family, are based on a MIPS32r6 processor. If you own an older
1494 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1496 config CPU_MIPS64_R1
1497 bool "MIPS64 Release 1"
1498 depends on SYS_HAS_CPU_MIPS64_R1
1499 select CPU_HAS_PREFETCH
1500 select CPU_SUPPORTS_32BIT_KERNEL
1501 select CPU_SUPPORTS_64BIT_KERNEL
1502 select CPU_SUPPORTS_HIGHMEM
1503 select CPU_SUPPORTS_HUGEPAGES
1505 Choose this option to build a kernel for release 1 or later of the
1506 MIPS64 architecture. Many modern embedded systems with a 64-bit
1507 MIPS processor are based on a MIPS64 processor. If you know the
1508 specific type of processor in your system, choose those that one
1509 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1510 Release 2 of the MIPS64 architecture is available since several
1511 years so chances are you even have a MIPS64 Release 2 processor
1512 in which case you should choose CPU_MIPS64_R2 instead for better
1515 config CPU_MIPS64_R2
1516 bool "MIPS64 Release 2"
1517 depends on SYS_HAS_CPU_MIPS64_R2
1518 select CPU_HAS_PREFETCH
1519 select CPU_SUPPORTS_32BIT_KERNEL
1520 select CPU_SUPPORTS_64BIT_KERNEL
1521 select CPU_SUPPORTS_HIGHMEM
1522 select CPU_SUPPORTS_HUGEPAGES
1523 select CPU_SUPPORTS_MSA
1526 Choose this option to build a kernel for release 2 or later of the
1527 MIPS64 architecture. Many modern embedded systems with a 64-bit
1528 MIPS processor are based on a MIPS64 processor. If you know the
1529 specific type of processor in your system, choose those that one
1530 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1532 config CPU_MIPS64_R6
1533 bool "MIPS64 Release 6"
1534 depends on SYS_HAS_CPU_MIPS64_R6
1535 select CPU_HAS_PREFETCH
1536 select CPU_SUPPORTS_32BIT_KERNEL
1537 select CPU_SUPPORTS_64BIT_KERNEL
1538 select CPU_SUPPORTS_HIGHMEM
1539 select CPU_SUPPORTS_MSA
1541 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1544 Choose this option to build a kernel for release 6 or later of the
1545 MIPS64 architecture. New MIPS processors, starting with the Warrior
1546 family, are based on a MIPS64r6 processor. If you own an older
1547 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1551 depends on SYS_HAS_CPU_R3000
1553 select CPU_SUPPORTS_32BIT_KERNEL
1554 select CPU_SUPPORTS_HIGHMEM
1556 Please make sure to pick the right CPU type. Linux/MIPS is not
1557 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1558 *not* work on R4000 machines and vice versa. However, since most
1559 of the supported machines have an R4000 (or similar) CPU, R4x00
1560 might be a safe bet. If the resulting kernel does not work,
1561 try to recompile with R3000.
1565 depends on SYS_HAS_CPU_TX39XX
1566 select CPU_SUPPORTS_32BIT_KERNEL
1570 depends on SYS_HAS_CPU_VR41XX
1571 select CPU_SUPPORTS_32BIT_KERNEL
1572 select CPU_SUPPORTS_64BIT_KERNEL
1574 The options selects support for the NEC VR4100 series of processors.
1575 Only choose this option if you have one of these processors as a
1576 kernel built with this option will not run on any other type of
1577 processor or vice versa.
1581 depends on SYS_HAS_CPU_R4300
1582 select CPU_SUPPORTS_32BIT_KERNEL
1583 select CPU_SUPPORTS_64BIT_KERNEL
1585 MIPS Technologies R4300-series processors.
1589 depends on SYS_HAS_CPU_R4X00
1590 select CPU_SUPPORTS_32BIT_KERNEL
1591 select CPU_SUPPORTS_64BIT_KERNEL
1592 select CPU_SUPPORTS_HUGEPAGES
1594 MIPS Technologies R4000-series processors other than 4300, including
1595 the R4000, R4400, R4600, and 4700.
1599 depends on SYS_HAS_CPU_TX49XX
1600 select CPU_HAS_PREFETCH
1601 select CPU_SUPPORTS_32BIT_KERNEL
1602 select CPU_SUPPORTS_64BIT_KERNEL
1603 select CPU_SUPPORTS_HUGEPAGES
1607 depends on SYS_HAS_CPU_R5000
1608 select CPU_SUPPORTS_32BIT_KERNEL
1609 select CPU_SUPPORTS_64BIT_KERNEL
1610 select CPU_SUPPORTS_HUGEPAGES
1612 MIPS Technologies R5000-series processors other than the Nevada.
1616 depends on SYS_HAS_CPU_R5432
1617 select CPU_SUPPORTS_32BIT_KERNEL
1618 select CPU_SUPPORTS_64BIT_KERNEL
1619 select CPU_SUPPORTS_HUGEPAGES
1623 depends on SYS_HAS_CPU_R5500
1624 select CPU_SUPPORTS_32BIT_KERNEL
1625 select CPU_SUPPORTS_64BIT_KERNEL
1626 select CPU_SUPPORTS_HUGEPAGES
1628 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1633 depends on SYS_HAS_CPU_NEVADA
1634 select CPU_SUPPORTS_32BIT_KERNEL
1635 select CPU_SUPPORTS_64BIT_KERNEL
1636 select CPU_SUPPORTS_HUGEPAGES
1638 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1642 depends on SYS_HAS_CPU_R8000
1643 select CPU_HAS_PREFETCH
1644 select CPU_SUPPORTS_64BIT_KERNEL
1646 MIPS Technologies R8000 processors. Note these processors are
1647 uncommon and the support for them is incomplete.
1651 depends on SYS_HAS_CPU_R10000
1652 select CPU_HAS_PREFETCH
1653 select CPU_SUPPORTS_32BIT_KERNEL
1654 select CPU_SUPPORTS_64BIT_KERNEL
1655 select CPU_SUPPORTS_HIGHMEM
1656 select CPU_SUPPORTS_HUGEPAGES
1658 MIPS Technologies R10000-series processors.
1662 depends on SYS_HAS_CPU_RM7000
1663 select CPU_HAS_PREFETCH
1664 select CPU_SUPPORTS_32BIT_KERNEL
1665 select CPU_SUPPORTS_64BIT_KERNEL
1666 select CPU_SUPPORTS_HIGHMEM
1667 select CPU_SUPPORTS_HUGEPAGES
1671 depends on SYS_HAS_CPU_SB1
1672 select CPU_SUPPORTS_32BIT_KERNEL
1673 select CPU_SUPPORTS_64BIT_KERNEL
1674 select CPU_SUPPORTS_HIGHMEM
1675 select CPU_SUPPORTS_HUGEPAGES
1676 select WEAK_ORDERING
1678 config CPU_CAVIUM_OCTEON
1679 bool "Cavium Octeon processor"
1680 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1681 select CPU_HAS_PREFETCH
1682 select CPU_SUPPORTS_64BIT_KERNEL
1683 select WEAK_ORDERING
1684 select CPU_SUPPORTS_HIGHMEM
1685 select CPU_SUPPORTS_HUGEPAGES
1686 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1687 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1688 select MIPS_L1_CACHE_SHIFT_7
1691 The Cavium Octeon processor is a highly integrated chip containing
1692 many ethernet hardware widgets for networking tasks. The processor
1693 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1694 Full details can be found at http://www.caviumnetworks.com.
1697 bool "Broadcom BMIPS"
1698 depends on SYS_HAS_CPU_BMIPS
1700 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1701 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1702 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1703 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1704 select CPU_SUPPORTS_32BIT_KERNEL
1705 select DMA_NONCOHERENT
1707 select SWAP_IO_SPACE
1708 select WEAK_ORDERING
1709 select CPU_SUPPORTS_HIGHMEM
1710 select CPU_HAS_PREFETCH
1711 select CPU_SUPPORTS_CPUFREQ
1712 select MIPS_EXTERNAL_TIMER
1714 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1717 bool "Netlogic XLR SoC"
1718 depends on SYS_HAS_CPU_XLR
1719 select CPU_SUPPORTS_32BIT_KERNEL
1720 select CPU_SUPPORTS_64BIT_KERNEL
1721 select CPU_SUPPORTS_HIGHMEM
1722 select CPU_SUPPORTS_HUGEPAGES
1723 select WEAK_ORDERING
1724 select WEAK_REORDERING_BEYOND_LLSC
1726 Netlogic Microsystems XLR/XLS processors.
1729 bool "Netlogic XLP SoC"
1730 depends on SYS_HAS_CPU_XLP
1731 select CPU_SUPPORTS_32BIT_KERNEL
1732 select CPU_SUPPORTS_64BIT_KERNEL
1733 select CPU_SUPPORTS_HIGHMEM
1734 select WEAK_ORDERING
1735 select WEAK_REORDERING_BEYOND_LLSC
1736 select CPU_HAS_PREFETCH
1738 select CPU_SUPPORTS_HUGEPAGES
1739 select MIPS_ASID_BITS_VARIABLE
1741 Netlogic Microsystems XLP processors.
1744 config CPU_MIPS32_3_5_FEATURES
1745 bool "MIPS32 Release 3.5 Features"
1746 depends on SYS_HAS_CPU_MIPS32_R3_5
1747 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1749 Choose this option to build a kernel for release 2 or later of the
1750 MIPS32 architecture including features from the 3.5 release such as
1751 support for Enhanced Virtual Addressing (EVA).
1753 config CPU_MIPS32_3_5_EVA
1754 bool "Enhanced Virtual Addressing (EVA)"
1755 depends on CPU_MIPS32_3_5_FEATURES
1759 Choose this option if you want to enable the Enhanced Virtual
1760 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1761 One of its primary benefits is an increase in the maximum size
1762 of lowmem (up to 3GB). If unsure, say 'N' here.
1764 config CPU_MIPS32_R5_FEATURES
1765 bool "MIPS32 Release 5 Features"
1766 depends on SYS_HAS_CPU_MIPS32_R5
1767 depends on CPU_MIPS32_R2
1769 Choose this option to build a kernel for release 2 or later of the
1770 MIPS32 architecture including features from release 5 such as
1771 support for Extended Physical Addressing (XPA).
1773 config CPU_MIPS32_R5_XPA
1774 bool "Extended Physical Addressing (XPA)"
1775 depends on CPU_MIPS32_R5_FEATURES
1777 depends on !PAGE_SIZE_4KB
1778 depends on SYS_SUPPORTS_HIGHMEM
1781 select ARCH_PHYS_ADDR_T_64BIT
1784 Choose this option if you want to enable the Extended Physical
1785 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1786 benefit is to increase physical addressing equal to or greater
1787 than 40 bits. Note that this has the side effect of turning on
1788 64-bit addressing which in turn makes the PTEs 64-bit in size.
1789 If unsure, say 'N' here.
1792 config CPU_NOP_WORKAROUNDS
1795 config CPU_JUMP_WORKAROUNDS
1798 config CPU_LOONGSON2F_WORKAROUNDS
1799 bool "Loongson 2F Workarounds"
1801 select CPU_NOP_WORKAROUNDS
1802 select CPU_JUMP_WORKAROUNDS
1804 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1805 require workarounds. Without workarounds the system may hang
1806 unexpectedly. For more information please refer to the gas
1807 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1809 Loongson 2F03 and later have fixed these issues and no workarounds
1810 are needed. The workarounds have no significant side effect on them
1811 but may decrease the performance of the system so this option should
1812 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1815 If unsure, please say Y.
1816 endif # CPU_LOONGSON2F
1818 config SYS_SUPPORTS_ZBOOT
1820 select HAVE_KERNEL_GZIP
1821 select HAVE_KERNEL_BZIP2
1822 select HAVE_KERNEL_LZ4
1823 select HAVE_KERNEL_LZMA
1824 select HAVE_KERNEL_LZO
1825 select HAVE_KERNEL_XZ
1827 config SYS_SUPPORTS_ZBOOT_UART16550
1829 select SYS_SUPPORTS_ZBOOT
1831 config SYS_SUPPORTS_ZBOOT_UART_PROM
1833 select SYS_SUPPORTS_ZBOOT
1835 config CPU_LOONGSON2
1837 select CPU_SUPPORTS_32BIT_KERNEL
1838 select CPU_SUPPORTS_64BIT_KERNEL
1839 select CPU_SUPPORTS_HIGHMEM
1840 select CPU_SUPPORTS_HUGEPAGES
1842 config CPU_LOONGSON1
1846 select CPU_HAS_PREFETCH
1847 select CPU_SUPPORTS_32BIT_KERNEL
1848 select CPU_SUPPORTS_HIGHMEM
1849 select CPU_SUPPORTS_CPUFREQ
1851 config CPU_BMIPS32_3300
1852 select SMP_UP if SMP
1855 config CPU_BMIPS4350
1857 select SYS_SUPPORTS_SMP
1858 select SYS_SUPPORTS_HOTPLUG_CPU
1860 config CPU_BMIPS4380
1862 select MIPS_L1_CACHE_SHIFT_6
1863 select SYS_SUPPORTS_SMP
1864 select SYS_SUPPORTS_HOTPLUG_CPU
1867 config CPU_BMIPS5000
1869 select MIPS_CPU_SCACHE
1870 select MIPS_L1_CACHE_SHIFT_7
1871 select SYS_SUPPORTS_SMP
1872 select SYS_SUPPORTS_HOTPLUG_CPU
1875 config SYS_HAS_CPU_LOONGSON3
1877 select CPU_SUPPORTS_CPUFREQ
1880 config SYS_HAS_CPU_LOONGSON2E
1883 config SYS_HAS_CPU_LOONGSON2F
1885 select CPU_SUPPORTS_CPUFREQ
1886 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1887 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1889 config SYS_HAS_CPU_LOONGSON1B
1892 config SYS_HAS_CPU_LOONGSON1C
1895 config SYS_HAS_CPU_MIPS32_R1
1898 config SYS_HAS_CPU_MIPS32_R2
1901 config SYS_HAS_CPU_MIPS32_R3_5
1904 config SYS_HAS_CPU_MIPS32_R5
1907 config SYS_HAS_CPU_MIPS32_R6
1910 config SYS_HAS_CPU_MIPS64_R1
1913 config SYS_HAS_CPU_MIPS64_R2
1916 config SYS_HAS_CPU_MIPS64_R6
1919 config SYS_HAS_CPU_R3000
1922 config SYS_HAS_CPU_TX39XX
1925 config SYS_HAS_CPU_VR41XX
1928 config SYS_HAS_CPU_R4300
1931 config SYS_HAS_CPU_R4X00
1934 config SYS_HAS_CPU_TX49XX
1937 config SYS_HAS_CPU_R5000
1940 config SYS_HAS_CPU_R5432
1943 config SYS_HAS_CPU_R5500
1946 config SYS_HAS_CPU_NEVADA
1949 config SYS_HAS_CPU_R8000
1952 config SYS_HAS_CPU_R10000
1955 config SYS_HAS_CPU_RM7000
1958 config SYS_HAS_CPU_SB1
1961 config SYS_HAS_CPU_CAVIUM_OCTEON
1964 config SYS_HAS_CPU_BMIPS
1967 config SYS_HAS_CPU_BMIPS32_3300
1969 select SYS_HAS_CPU_BMIPS
1971 config SYS_HAS_CPU_BMIPS4350
1973 select SYS_HAS_CPU_BMIPS
1975 config SYS_HAS_CPU_BMIPS4380
1977 select SYS_HAS_CPU_BMIPS
1979 config SYS_HAS_CPU_BMIPS5000
1981 select SYS_HAS_CPU_BMIPS
1983 config SYS_HAS_CPU_XLR
1986 config SYS_HAS_CPU_XLP
1989 config MIPS_MALTA_PM
1990 depends on MIPS_MALTA
1996 # CPU may reorder R->R, R->W, W->R, W->W
1997 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1999 config WEAK_ORDERING
2003 # CPU may reorder reads and writes beyond LL/SC
2004 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2006 config WEAK_REORDERING_BEYOND_LLSC
2011 # These two indicate any level of the MIPS32 and MIPS64 architecture
2015 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2019 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2022 # These two indicate the revision of the architecture, either Release 1 or Release 2
2026 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2030 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2036 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2038 select HAVE_ARCH_BITREVERSE
2039 select MIPS_ASID_BITS_VARIABLE
2048 config SYS_SUPPORTS_32BIT_KERNEL
2050 config SYS_SUPPORTS_64BIT_KERNEL
2052 config CPU_SUPPORTS_32BIT_KERNEL
2054 config CPU_SUPPORTS_64BIT_KERNEL
2056 config CPU_SUPPORTS_CPUFREQ
2058 config CPU_SUPPORTS_ADDRWINCFG
2060 config CPU_SUPPORTS_HUGEPAGES
2062 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2064 config MIPS_PGD_C0_CONTEXT
2066 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2069 # Set to y for ptrace access to watch registers.
2071 config HARDWARE_WATCHPOINTS
2073 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2078 prompt "Kernel code model"
2080 You should only select this option if you have a workload that
2081 actually benefits from 64-bit processing or if your machine has
2082 large memory. You will only be presented a single option in this
2083 menu if your system does not support both 32-bit and 64-bit kernels.
2086 bool "32-bit kernel"
2087 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2090 Select this option if you want to build a 32-bit kernel.
2093 bool "64-bit kernel"
2094 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2096 Select this option if you want to build a 64-bit kernel.
2101 bool "KVM Guest Kernel"
2102 depends on BROKEN_ON_SMP
2104 Select this option if building a guest kernel for KVM (Trap & Emulate)
2107 config KVM_GUEST_TIMER_FREQ
2108 int "Count/Compare Timer Frequency (MHz)"
2109 depends on KVM_GUEST
2112 Set this to non-zero if building a guest kernel for KVM to skip RTC
2113 emulation when determining guest CPU Frequency. Instead, the guest's
2114 timer frequency is specified directly.
2116 config MIPS_VA_BITS_48
2117 bool "48 bits virtual memory"
2120 Support a maximum at least 48 bits of application virtual
2121 memory. Default is 40 bits or less, depending on the CPU.
2122 For page sizes 16k and above, this option results in a small
2123 memory overhead for page tables. For 4k page size, a fourth
2124 level of page tables is added which imposes both a memory
2125 overhead as well as slower TLB fault handling.
2130 prompt "Kernel page size"
2131 default PAGE_SIZE_4KB
2133 config PAGE_SIZE_4KB
2135 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2137 This option select the standard 4kB Linux page size. On some
2138 R3000-family processors this is the only available page size. Using
2139 4kB page size will minimize memory consumption and is therefore
2140 recommended for low memory systems.
2142 config PAGE_SIZE_8KB
2144 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2145 depends on !MIPS_VA_BITS_48
2147 Using 8kB page size will result in higher performance kernel at
2148 the price of higher memory consumption. This option is available
2149 only on R8000 and cnMIPS processors. Note that you will need a
2150 suitable Linux distribution to support this.
2152 config PAGE_SIZE_16KB
2154 depends on !CPU_R3000 && !CPU_TX39XX
2156 Using 16kB page size will result in higher performance kernel at
2157 the price of higher memory consumption. This option is available on
2158 all non-R3000 family processors. Note that you will need a suitable
2159 Linux distribution to support this.
2161 config PAGE_SIZE_32KB
2163 depends on CPU_CAVIUM_OCTEON
2164 depends on !MIPS_VA_BITS_48
2166 Using 32kB page size will result in higher performance kernel at
2167 the price of higher memory consumption. This option is available
2168 only on cnMIPS cores. Note that you will need a suitable Linux
2169 distribution to support this.
2171 config PAGE_SIZE_64KB
2173 depends on !CPU_R3000 && !CPU_TX39XX
2175 Using 64kB page size will result in higher performance kernel at
2176 the price of higher memory consumption. This option is available on
2177 all non-R3000 family processor. Not that at the time of this
2178 writing this option is still high experimental.
2182 config FORCE_MAX_ZONEORDER
2183 int "Maximum zone order"
2184 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2185 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2186 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2187 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2188 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2189 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2193 The kernel memory allocator divides physically contiguous memory
2194 blocks into "zones", where each zone is a power of two number of
2195 pages. This option selects the largest power of two that the kernel
2196 keeps in the memory allocator. If you need to allocate very large
2197 blocks of physically contiguous memory, then you may need to
2198 increase this value.
2200 This config option is actually maximum order plus one. For example,
2201 a value of 11 means that the largest free memory block is 2^10 pages.
2203 The page size is not necessarily 4KB. Keep this in mind
2204 when choosing a value for this option.
2209 config IP22_CPU_SCACHE
2214 # Support for a MIPS32 / MIPS64 style S-caches
2216 config MIPS_CPU_SCACHE
2220 config R5000_CPU_SCACHE
2224 config RM7000_CPU_SCACHE
2228 config SIBYTE_DMA_PAGEOPS
2229 bool "Use DMA to clear/copy pages"
2232 Instead of using the CPU to zero and copy pages, use a Data Mover
2233 channel. These DMA channels are otherwise unused by the standard
2234 SiByte Linux port. Seems to give a small performance benefit.
2236 config CPU_HAS_PREFETCH
2239 config CPU_GENERIC_DUMP_TLB
2241 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
2245 default y if !(CPU_R3000 || CPU_TX39XX)
2247 config CPU_R4K_CACHE_TLB
2249 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2252 bool "MIPS MT SMP support (1 TC on each available VPE)"
2254 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2255 select CPU_MIPSR2_IRQ_VI
2256 select CPU_MIPSR2_IRQ_EI
2261 select SYS_SUPPORTS_SMP
2262 select SYS_SUPPORTS_SCHED_SMT
2263 select MIPS_PERF_SHARED_TC_COUNTERS
2265 This is a kernel model which is known as SMVP. This is supported
2266 on cores with the MT ASE and uses the available VPEs to implement
2267 virtual processors which supports SMP. This is equivalent to the
2268 Intel Hyperthreading feature. For further information go to
2269 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2275 bool "SMT (multithreading) scheduler support"
2276 depends on SYS_SUPPORTS_SCHED_SMT
2279 SMT scheduler support improves the CPU scheduler's decision making
2280 when dealing with MIPS MT enabled cores at a cost of slightly
2281 increased overhead in some places. If unsure say N here.
2283 config SYS_SUPPORTS_SCHED_SMT
2286 config SYS_SUPPORTS_MULTITHREADING
2289 config MIPS_MT_FPAFF
2290 bool "Dynamic FPU affinity for FP-intensive threads"
2292 depends on MIPS_MT_SMP
2294 config MIPSR2_TO_R6_EMULATOR
2295 bool "MIPS R2-to-R6 emulator"
2296 depends on CPU_MIPSR6
2299 Choose this option if you want to run non-R6 MIPS userland code.
2300 Even if you say 'Y' here, the emulator will still be disabled by
2301 default. You can enable it using the 'mipsr2emu' kernel option.
2302 The only reason this is a build-time option is to save ~14K from the
2305 config MIPS_VPE_LOADER
2306 bool "VPE loader support."
2307 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2308 select CPU_MIPSR2_IRQ_VI
2309 select CPU_MIPSR2_IRQ_EI
2312 Includes a loader for loading an elf relocatable object
2313 onto another VPE and running it.
2315 config MIPS_VPE_LOADER_CMP
2318 depends on MIPS_VPE_LOADER && MIPS_CMP
2320 config MIPS_VPE_LOADER_MT
2323 depends on MIPS_VPE_LOADER && !MIPS_CMP
2325 config MIPS_VPE_LOADER_TOM
2326 bool "Load VPE program into memory hidden from linux"
2327 depends on MIPS_VPE_LOADER
2330 The loader can use memory that is present but has been hidden from
2331 Linux using the kernel command line option "mem=xxMB". It's up to
2332 you to ensure the amount you put in the option and the space your
2333 program requires is less or equal to the amount physically present.
2335 config MIPS_VPE_APSP_API
2336 bool "Enable support for AP/SP API (RTLX)"
2337 depends on MIPS_VPE_LOADER
2340 config MIPS_VPE_APSP_API_CMP
2343 depends on MIPS_VPE_APSP_API && MIPS_CMP
2345 config MIPS_VPE_APSP_API_MT
2348 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2351 bool "MIPS CMP framework support (DEPRECATED)"
2352 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2355 select SYS_SUPPORTS_SMP
2356 select WEAK_ORDERING
2359 Select this if you are using a bootloader which implements the "CMP
2360 framework" protocol (ie. YAMON) and want your kernel to make use of
2361 its ability to start secondary CPUs.
2363 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2367 bool "MIPS Coherent Processing System support"
2368 depends on SYS_SUPPORTS_MIPS_CPS
2370 select MIPS_CPS_PM if HOTPLUG_CPU
2372 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2373 select SYS_SUPPORTS_HOTPLUG_CPU
2374 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2375 select SYS_SUPPORTS_SMP
2376 select WEAK_ORDERING
2378 Select this if you wish to run an SMP kernel across multiple cores
2379 within a MIPS Coherent Processing System. When this option is
2380 enabled the kernel will probe for other cores and boot them with
2381 no external assistance. It is safe to enable this when hardware
2382 support is unavailable.
2395 config SB1_PASS_2_WORKAROUNDS
2397 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2400 config SB1_PASS_2_1_WORKAROUNDS
2402 depends on CPU_SB1 && CPU_SB1_PASS_2
2406 config ARCH_PHYS_ADDR_T_64BIT
2410 prompt "SmartMIPS or microMIPS ASE support"
2412 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2415 Select this if you want neither microMIPS nor SmartMIPS support
2417 config CPU_HAS_SMARTMIPS
2418 depends on SYS_SUPPORTS_SMARTMIPS
2421 SmartMIPS is a extension of the MIPS32 architecture aimed at
2422 increased security at both hardware and software level for
2423 smartcards. Enabling this option will allow proper use of the
2424 SmartMIPS instructions by Linux applications. However a kernel with
2425 this option will not work on a MIPS core without SmartMIPS core. If
2426 you don't know you probably don't have SmartMIPS and should say N
2429 config CPU_MICROMIPS
2430 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2433 When this option is enabled the kernel will be built using the
2439 bool "Support for the MIPS SIMD Architecture"
2440 depends on CPU_SUPPORTS_MSA
2441 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2443 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2444 and a set of SIMD instructions to operate on them. When this option
2445 is enabled the kernel will support allocating & switching MSA
2446 vector register contexts. If you know that your kernel will only be
2447 running on CPUs which do not support MSA or that your userland will
2448 not be making use of it then you may wish to say N here to reduce
2449 the size & complexity of your kernel.
2463 # Vectored interrupt mode is an R2 feature
2465 config CPU_MIPSR2_IRQ_VI
2469 # Extended interrupt mode is an R2 feature
2471 config CPU_MIPSR2_IRQ_EI
2476 depends on !CPU_R3000
2482 config CPU_DADDI_WORKAROUNDS
2485 config CPU_R4000_WORKAROUNDS
2487 select CPU_R4400_WORKAROUNDS
2489 config CPU_R4400_WORKAROUNDS
2492 config MIPS_ASID_SHIFT
2494 default 6 if CPU_R3000 || CPU_TX39XX
2495 default 4 if CPU_R8000
2498 config MIPS_ASID_BITS
2500 default 0 if MIPS_ASID_BITS_VARIABLE
2501 default 6 if CPU_R3000 || CPU_TX39XX
2504 config MIPS_ASID_BITS_VARIABLE
2508 # - Highmem only makes sense for the 32-bit kernel.
2509 # - The current highmem code will only work properly on physically indexed
2510 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2511 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2512 # moment we protect the user and offer the highmem option only on machines
2513 # where it's known to be safe. This will not offer highmem on a few systems
2514 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2515 # indexed CPUs but we're playing safe.
2516 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2517 # know they might have memory configurations that could make use of highmem
2521 bool "High Memory Support"
2522 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2524 config CPU_SUPPORTS_HIGHMEM
2527 config SYS_SUPPORTS_HIGHMEM
2530 config SYS_SUPPORTS_SMARTMIPS
2533 config SYS_SUPPORTS_MICROMIPS
2536 config SYS_SUPPORTS_MIPS16
2539 This option must be set if a kernel might be executed on a MIPS16-
2540 enabled CPU even if MIPS16 is not actually being used. In other
2541 words, it makes the kernel MIPS16-tolerant.
2543 config CPU_SUPPORTS_MSA
2546 config ARCH_FLATMEM_ENABLE
2548 depends on !NUMA && !CPU_LOONGSON2
2550 config ARCH_DISCONTIGMEM_ENABLE
2552 default y if SGI_IP27
2554 Say Y to support efficient handling of discontiguous physical memory,
2555 for architectures which are either NUMA (Non-Uniform Memory Access)
2556 or have huge holes in the physical address space for other reasons.
2557 See <file:Documentation/vm/numa> for more.
2559 config ARCH_SPARSEMEM_ENABLE
2561 select SPARSEMEM_STATIC
2565 depends on SYS_SUPPORTS_NUMA
2567 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2568 Access). This option improves performance on systems with more
2569 than two nodes; on two node systems it is generally better to
2570 leave it disabled; on single node systems disable this option
2573 config SYS_SUPPORTS_NUMA
2577 bool "Relocatable kernel"
2578 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2580 This builds a kernel image that retains relocation information
2581 so it can be loaded someplace besides the default 1MB.
2582 The relocations make the kernel binary about 15% larger,
2583 but are discarded at runtime
2585 config RELOCATION_TABLE_SIZE
2586 hex "Relocation table size"
2587 depends on RELOCATABLE
2588 range 0x0 0x01000000
2589 default "0x00100000"
2591 A table of relocation data will be appended to the kernel binary
2592 and parsed at boot to fix up the relocated kernel.
2594 This option allows the amount of space reserved for the table to be
2595 adjusted, although the default of 1Mb should be ok in most cases.
2597 The build will fail and a valid size suggested if this is too small.
2599 If unsure, leave at the default value.
2601 config RANDOMIZE_BASE
2602 bool "Randomize the address of the kernel image"
2603 depends on RELOCATABLE
2605 Randomizes the physical and virtual address at which the
2606 kernel image is loaded, as a security feature that
2607 deters exploit attempts relying on knowledge of the location
2608 of kernel internals.
2610 Entropy is generated using any coprocessor 0 registers available.
2612 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2616 config RANDOMIZE_BASE_MAX_OFFSET
2617 hex "Maximum kASLR offset" if EXPERT
2618 depends on RANDOMIZE_BASE
2619 range 0x0 0x40000000 if EVA || 64BIT
2620 range 0x0 0x08000000
2621 default "0x01000000"
2623 When kASLR is active, this provides the maximum offset that will
2624 be applied to the kernel image. It should be set according to the
2625 amount of physical RAM available in the target system minus
2626 PHYSICAL_START and must be a power of 2.
2628 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2629 EVA or 64-bit. The default is 16Mb.
2634 depends on NEED_MULTIPLE_NODES
2636 config HW_PERF_EVENTS
2637 bool "Enable hardware performance counter support for perf events"
2638 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2641 Enable hardware performance counter support for perf events. If
2642 disabled, perf events will use software events only.
2647 bool "Multi-Processing support"
2648 depends on SYS_SUPPORTS_SMP
2650 This enables support for systems with more than one CPU. If you have
2651 a system with only one CPU, say N. If you have a system with more
2652 than one CPU, say Y.
2654 If you say N here, the kernel will run on uni- and multiprocessor
2655 machines, but will use only one CPU of a multiprocessor machine. If
2656 you say Y here, the kernel will run on many, but not all,
2657 uniprocessor machines. On a uniprocessor machine, the kernel
2658 will run faster if you say N here.
2660 People using multiprocessor machines who say Y here should also say
2661 Y to "Enhanced Real Time Clock Support", below.
2663 See also the SMP-HOWTO available at
2664 <http://www.tldp.org/docs.html#howto>.
2666 If you don't know what to do here, say N.
2669 bool "Support for hot-pluggable CPUs"
2670 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2672 Say Y here to allow turning CPUs off and on. CPUs can be
2673 controlled through /sys/devices/system/cpu.
2674 (Note: power management support will enable this option
2675 automatically on SMP systems. )
2676 Say N if you want to disable CPU hotplug.
2681 config SYS_SUPPORTS_MIPS_CMP
2684 config SYS_SUPPORTS_MIPS_CPS
2687 config SYS_SUPPORTS_SMP
2690 config NR_CPUS_DEFAULT_4
2693 config NR_CPUS_DEFAULT_8
2696 config NR_CPUS_DEFAULT_16
2699 config NR_CPUS_DEFAULT_32
2702 config NR_CPUS_DEFAULT_64
2706 int "Maximum number of CPUs (2-256)"
2709 default "4" if NR_CPUS_DEFAULT_4
2710 default "8" if NR_CPUS_DEFAULT_8
2711 default "16" if NR_CPUS_DEFAULT_16
2712 default "32" if NR_CPUS_DEFAULT_32
2713 default "64" if NR_CPUS_DEFAULT_64
2715 This allows you to specify the maximum number of CPUs which this
2716 kernel will support. The maximum supported value is 32 for 32-bit
2717 kernel and 64 for 64-bit kernels; the minimum value which makes
2718 sense is 1 for Qemu (useful only for kernel debugging purposes)
2719 and 2 for all others.
2721 This is purely to save memory - each supported CPU adds
2722 approximately eight kilobytes to the kernel image. For best
2723 performance should round up your number of processors to the next
2726 config MIPS_PERF_SHARED_TC_COUNTERS
2730 # Timer Interrupt Frequency Configuration
2734 prompt "Timer frequency"
2737 Allows the configuration of the timer frequency.
2740 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2743 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2746 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2749 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2752 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2755 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2758 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2761 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2765 config SYS_SUPPORTS_24HZ
2768 config SYS_SUPPORTS_48HZ
2771 config SYS_SUPPORTS_100HZ
2774 config SYS_SUPPORTS_128HZ
2777 config SYS_SUPPORTS_250HZ
2780 config SYS_SUPPORTS_256HZ
2783 config SYS_SUPPORTS_1000HZ
2786 config SYS_SUPPORTS_1024HZ
2789 config SYS_SUPPORTS_ARBIT_HZ
2791 default y if !SYS_SUPPORTS_24HZ && \
2792 !SYS_SUPPORTS_48HZ && \
2793 !SYS_SUPPORTS_100HZ && \
2794 !SYS_SUPPORTS_128HZ && \
2795 !SYS_SUPPORTS_250HZ && \
2796 !SYS_SUPPORTS_256HZ && \
2797 !SYS_SUPPORTS_1000HZ && \
2798 !SYS_SUPPORTS_1024HZ
2804 default 100 if HZ_100
2805 default 128 if HZ_128
2806 default 250 if HZ_250
2807 default 256 if HZ_256
2808 default 1000 if HZ_1000
2809 default 1024 if HZ_1024
2812 def_bool HIGH_RES_TIMERS
2814 source "kernel/Kconfig.preempt"
2817 bool "Kexec system call"
2820 kexec is a system call that implements the ability to shutdown your
2821 current kernel, and to start another kernel. It is like a reboot
2822 but it is independent of the system firmware. And like a reboot
2823 you can start any kernel with it, not just Linux.
2825 The name comes from the similarity to the exec system call.
2827 It is an ongoing process to be certain the hardware in a machine
2828 is properly shutdown, so do not be surprised if this code does not
2829 initially work for you. As of this writing the exact hardware
2830 interface is strongly in flux, so no good recommendation can be
2834 bool "Kernel crash dumps"
2836 Generate crash dump after being started by kexec.
2837 This should be normally only set in special crash dump kernels
2838 which are loaded in the main kernel with kexec-tools into
2839 a specially reserved region and then later executed after
2840 a crash by kdump/kexec. The crash dump kernel must be compiled
2841 to a memory address not used by the main kernel or firmware using
2844 config PHYSICAL_START
2845 hex "Physical address where the kernel is loaded"
2846 default "0xffffffff84000000" if 64BIT
2847 default "0x84000000" if 32BIT
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 source "init/Kconfig"
2991 source "kernel/Kconfig.freezer"
2993 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3001 bool "Support for PCI controller"
3002 depends on HW_HAS_PCI
3005 Find out whether you have a PCI motherboard. PCI is the name of a
3006 bus system, i.e. the way the CPU talks to the other stuff inside
3007 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
3011 bool "Support for HT-linked PCI"
3013 depends on CPU_LOONGSON3
3017 Loongson family machines use Hyper-Transport bus for inter-core
3018 connection and device connection. The PCI bus is a subordinate
3019 linked at HT. Choose Y for Loongson-3 based machines.
3024 config PCI_DOMAINS_GENERIC
3027 config PCI_DRIVERS_GENERIC
3028 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3031 config PCI_DRIVERS_LEGACY
3032 def_bool !PCI_DRIVERS_GENERIC
3033 select NO_GENERIC_PCI_IOPORT_MAP
3035 source "drivers/pci/Kconfig"
3038 # ISA support is now enabled via select. Too many systems still have the one
3039 # or other ISA chip on the board that users don't know about so don't expect
3040 # users to choose the right thing ...
3047 depends on HW_HAS_EISA
3049 select GENERIC_ISA_DMA
3051 The Extended Industry Standard Architecture (EISA) bus was
3052 developed as an open alternative to the IBM MicroChannel bus.
3054 The EISA bus provided some of the features of the IBM MicroChannel
3055 bus while maintaining backward compatibility with cards made for
3056 the older ISA bus. The EISA bus saw limited use between 1988 and
3057 1995 when it was made obsolete by the PCI bus.
3059 Say Y here if you are building a kernel for an EISA-based machine.
3063 source "drivers/eisa/Kconfig"
3066 bool "TURBOchannel support"
3067 depends on MACH_DECSTATION
3069 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3070 processors. TURBOchannel programming specifications are available
3072 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3074 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3075 Linux driver support status is documented at:
3076 <http://www.linux-mips.org/wiki/DECstation>
3082 config ARCH_MMAP_RND_BITS_MIN
3086 config ARCH_MMAP_RND_BITS_MAX
3090 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3093 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3100 select MIPS_EXTERNAL_TIMER
3108 source "drivers/pcmcia/Kconfig"
3111 tristate "RapidIO support"
3115 If you say Y here, the kernel will include drivers and
3116 infrastructure code to support RapidIO interconnect devices.
3118 source "drivers/rapidio/Kconfig"
3122 menu "Executable file formats"
3124 source "fs/Kconfig.binfmt"
3129 config MIPS32_COMPAT
3135 config SYSVIPC_COMPAT
3139 bool "Kernel support for o32 binaries"
3141 select ARCH_WANT_OLD_COMPAT_IPC
3143 select MIPS32_COMPAT
3144 select SYSVIPC_COMPAT if SYSVIPC
3146 Select this option if you want to run o32 binaries. These are pure
3147 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3148 existing binaries are in this format.
3153 bool "Kernel support for n32 binaries"
3156 select MIPS32_COMPAT
3157 select SYSVIPC_COMPAT if SYSVIPC
3159 Select this option if you want to run n32 binaries. These are
3160 64-bit binaries using 32-bit quantities for addressing and certain
3161 data that would normally be 64-bit. They are used in special
3168 default y if MIPS32_O32 || MIPS32_N32
3173 menu "Power management options"
3175 config ARCH_HIBERNATION_POSSIBLE
3177 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3179 config ARCH_SUSPEND_POSSIBLE
3181 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3183 source "kernel/power/Kconfig"
3187 config MIPS_EXTERNAL_TIMER
3190 menu "CPU Power Management"
3192 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3193 source "drivers/cpufreq/Kconfig"
3196 source "drivers/cpuidle/Kconfig"
3200 source "net/Kconfig"
3202 source "drivers/Kconfig"
3204 source "drivers/firmware/Kconfig"
3208 source "arch/mips/Kconfig.debug"
3210 source "security/Kconfig"
3212 source "crypto/Kconfig"
3214 source "lib/Kconfig"
3216 source "arch/mips/kvm/Kconfig"