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_COMPILER_H
33 select HAVE_ARCH_JUMP_LABEL
35 select HAVE_ARCH_MMAP_RND_BITS if MMU
36 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
37 select HAVE_ARCH_SECCOMP_FILTER
38 select HAVE_ARCH_TRACEHOOK
39 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
40 select HAVE_CBPF_JIT if (!64BIT && !CPU_MICROMIPS)
41 select HAVE_EBPF_JIT if (64BIT && !CPU_MICROMIPS)
42 select HAVE_CC_STACKPROTECTOR
43 select HAVE_CONTEXT_TRACKING
44 select HAVE_COPY_THREAD_TLS
45 select HAVE_C_RECORDMCOUNT
46 select HAVE_DEBUG_KMEMLEAK
47 select HAVE_DEBUG_STACKOVERFLOW
48 select HAVE_DMA_API_DEBUG
49 select HAVE_DMA_CONTIGUOUS
50 select HAVE_DYNAMIC_FTRACE
51 select HAVE_EXIT_THREAD
52 select HAVE_FTRACE_MCOUNT_RECORD
53 select HAVE_FUNCTION_GRAPH_TRACER
54 select HAVE_FUNCTION_TRACER
55 select HAVE_GENERIC_DMA_COHERENT
57 select HAVE_IRQ_EXIT_ON_IRQ_STACK
58 select HAVE_IRQ_TIME_ACCOUNTING
60 select HAVE_KRETPROBES
62 select HAVE_MEMBLOCK_NODE_MAP
63 select HAVE_MOD_ARCH_SPECIFIC
66 select HAVE_PERF_EVENTS
67 select HAVE_REGS_AND_STACK_ACCESS_API
68 select HAVE_SYSCALL_TRACEPOINTS
69 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
70 select IRQ_FORCED_THREADING
71 select MODULES_USE_ELF_RELA if MODULES && 64BIT
72 select MODULES_USE_ELF_REL if MODULES
73 select PERF_USE_VMALLOC
74 select RTC_LIB if !MACH_LOONGSON64
75 select SYSCTL_EXCEPTION_TRACE
78 menu "Machine selection"
85 bool "Generic board-agnostic MIPS kernel"
89 select CLKSRC_MIPS_GIC
91 select CPU_MIPSR2_IRQ_VI
92 select CPU_MIPSR2_IRQ_EI
94 select DMA_PERDEV_COHERENT
98 select MIPS_CPU_SCACHE
100 select MIPS_L1_CACHE_SHIFT_7
101 select NO_EXCEPT_FILL
102 select PCI_DRIVERS_GENERIC
106 select SYS_HAS_CPU_MIPS32_R1
107 select SYS_HAS_CPU_MIPS32_R2
108 select SYS_HAS_CPU_MIPS32_R6
109 select SYS_HAS_CPU_MIPS64_R1
110 select SYS_HAS_CPU_MIPS64_R2
111 select SYS_HAS_CPU_MIPS64_R6
112 select SYS_SUPPORTS_32BIT_KERNEL
113 select SYS_SUPPORTS_64BIT_KERNEL
114 select SYS_SUPPORTS_BIG_ENDIAN
115 select SYS_SUPPORTS_HIGHMEM
116 select SYS_SUPPORTS_LITTLE_ENDIAN
117 select SYS_SUPPORTS_MICROMIPS
118 select SYS_SUPPORTS_MIPS_CPS
119 select SYS_SUPPORTS_MIPS16
120 select SYS_SUPPORTS_MULTITHREADING
121 select SYS_SUPPORTS_RELOCATABLE
122 select SYS_SUPPORTS_SMARTMIPS
123 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
124 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
125 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
126 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
127 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
128 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
131 Select this to build a kernel which aims to support multiple boards,
132 generally using a flattened device tree passed from the bootloader
133 using the boot protocol defined in the UHI (Unified Hosting
134 Interface) specification.
137 bool "Alchemy processor based machines"
138 select ARCH_PHYS_ADDR_T_64BIT
142 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
143 select SYS_HAS_CPU_MIPS32_R1
144 select SYS_SUPPORTS_32BIT_KERNEL
145 select SYS_SUPPORTS_APM_EMULATION
147 select SYS_SUPPORTS_ZBOOT
151 bool "Texas Instruments AR7"
153 select DMA_NONCOHERENT
157 select NO_EXCEPT_FILL
159 select SYS_HAS_CPU_MIPS32_R1
160 select SYS_HAS_EARLY_PRINTK
161 select SYS_SUPPORTS_32BIT_KERNEL
162 select SYS_SUPPORTS_LITTLE_ENDIAN
163 select SYS_SUPPORTS_MIPS16
164 select SYS_SUPPORTS_ZBOOT_UART16550
169 Support for the Texas Instruments AR7 System-on-a-Chip
170 family: TNETD7100, 7200 and 7300.
173 bool "Atheros AR231x/AR531x SoC support"
176 select DMA_NONCOHERENT
179 select SYS_HAS_CPU_MIPS32_R1
180 select SYS_SUPPORTS_BIG_ENDIAN
181 select SYS_SUPPORTS_32BIT_KERNEL
182 select SYS_HAS_EARLY_PRINTK
184 Support for Atheros AR231x and Atheros AR531x based boards
187 bool "Atheros AR71XX/AR724X/AR913X based boards"
188 select ARCH_HAS_RESET_CONTROLLER
192 select DMA_NONCOHERENT
199 select SYS_HAS_CPU_MIPS32_R2
200 select SYS_HAS_EARLY_PRINTK
201 select SYS_SUPPORTS_32BIT_KERNEL
202 select SYS_SUPPORTS_BIG_ENDIAN
203 select SYS_SUPPORTS_MIPS16
204 select SYS_SUPPORTS_ZBOOT_UART_PROM
207 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
210 bool "Broadcom Generic BMIPS kernel"
212 select NO_EXCEPT_FILL
218 select BCM6345_L1_IRQ
219 select BCM7038_L1_IRQ
220 select BCM7120_L2_IRQ
221 select BRCMSTB_L2_IRQ
223 select DMA_NONCOHERENT
224 select SYS_SUPPORTS_32BIT_KERNEL
225 select SYS_SUPPORTS_LITTLE_ENDIAN
226 select SYS_SUPPORTS_BIG_ENDIAN
227 select SYS_SUPPORTS_HIGHMEM
228 select SYS_HAS_CPU_BMIPS32_3300
229 select SYS_HAS_CPU_BMIPS4350
230 select SYS_HAS_CPU_BMIPS4380
231 select SYS_HAS_CPU_BMIPS5000
233 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
234 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
235 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
236 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
238 Build a generic DT-based kernel image that boots on select
239 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
240 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
241 must be set appropriately for your board.
244 bool "Broadcom BCM47XX based boards"
248 select DMA_NONCOHERENT
251 select SYS_HAS_CPU_MIPS32_R1
252 select NO_EXCEPT_FILL
253 select SYS_SUPPORTS_32BIT_KERNEL
254 select SYS_SUPPORTS_LITTLE_ENDIAN
255 select SYS_SUPPORTS_MIPS16
256 select SYS_HAS_EARLY_PRINTK
257 select USE_GENERIC_EARLY_PRINTK_8250
259 select LEDS_GPIO_REGISTER
263 Support for BCM47XX based boards
266 bool "Broadcom BCM63XX based boards"
271 select DMA_NONCOHERENT
273 select SYS_SUPPORTS_32BIT_KERNEL
274 select SYS_SUPPORTS_BIG_ENDIAN
275 select SYS_HAS_EARLY_PRINTK
276 select SYS_HAS_CPU_BMIPS32_3300
277 select SYS_HAS_CPU_BMIPS4350
278 select SYS_HAS_CPU_BMIPS4380
282 select MIPS_L1_CACHE_SHIFT_4
284 Support for BCM63XX based boards
291 select DMA_NONCOHERENT
297 select PCI_GT64XXX_PCI0
299 select SYS_HAS_CPU_NEVADA
300 select SYS_HAS_EARLY_PRINTK
301 select SYS_SUPPORTS_32BIT_KERNEL
302 select SYS_SUPPORTS_64BIT_KERNEL
303 select SYS_SUPPORTS_LITTLE_ENDIAN
304 select USE_GENERIC_EARLY_PRINTK_8250
306 config MACH_DECSTATION
310 select CEVT_R4K if CPU_R4X00
312 select CSRC_R4K if CPU_R4X00
313 select CPU_DADDI_WORKAROUNDS if 64BIT
314 select CPU_R4000_WORKAROUNDS if 64BIT
315 select CPU_R4400_WORKAROUNDS if 64BIT
316 select DMA_NONCOHERENT
319 select SYS_HAS_CPU_R3000
320 select SYS_HAS_CPU_R4X00
321 select SYS_SUPPORTS_32BIT_KERNEL
322 select SYS_SUPPORTS_64BIT_KERNEL
323 select SYS_SUPPORTS_LITTLE_ENDIAN
324 select SYS_SUPPORTS_128HZ
325 select SYS_SUPPORTS_256HZ
326 select SYS_SUPPORTS_1024HZ
327 select MIPS_L1_CACHE_SHIFT_4
329 This enables support for DEC's MIPS based workstations. For details
330 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
331 DECstation porting pages on <http://decstation.unix-ag.org/>.
333 If you have one of the following DECstation Models you definitely
334 want to choose R4xx0 for the CPU Type:
341 otherwise choose R3000.
344 bool "Jazz family of machines"
347 select ARCH_MAY_HAVE_PC_FDC
350 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
351 select GENERIC_ISA_DMA
352 select HAVE_PCSPKR_PLATFORM
357 select SYS_HAS_CPU_R4X00
358 select SYS_SUPPORTS_32BIT_KERNEL
359 select SYS_SUPPORTS_64BIT_KERNEL
360 select SYS_SUPPORTS_100HZ
362 This a family of machines based on the MIPS R4030 chipset which was
363 used by several vendors to build RISC/os and Windows NT workstations.
364 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
365 Olivetti M700-10 workstations.
368 bool "Ingenic SoC based machines"
369 select SYS_SUPPORTS_32BIT_KERNEL
370 select SYS_SUPPORTS_LITTLE_ENDIAN
371 select SYS_SUPPORTS_ZBOOT_UART16550
372 select DMA_NONCOHERENT
377 select GENERIC_IRQ_CHIP
383 bool "Lantiq based platforms"
384 select DMA_NONCOHERENT
388 select SYS_HAS_CPU_MIPS32_R1
389 select SYS_HAS_CPU_MIPS32_R2
390 select SYS_SUPPORTS_BIG_ENDIAN
391 select SYS_SUPPORTS_32BIT_KERNEL
392 select SYS_SUPPORTS_MIPS16
393 select SYS_SUPPORTS_MULTITHREADING
394 select SYS_HAS_EARLY_PRINTK
401 select PINCTRL_LANTIQ
402 select ARCH_HAS_RESET_CONTROLLER
403 select RESET_CONTROLLER
406 bool "LASAT Networks platforms"
410 select DMA_NONCOHERENT
411 select SYS_HAS_EARLY_PRINTK
414 select PCI_GT64XXX_PCI0
416 select R5000_CPU_SCACHE
417 select SYS_HAS_CPU_R5000
418 select SYS_SUPPORTS_32BIT_KERNEL
419 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
420 select SYS_SUPPORTS_LITTLE_ENDIAN
422 config MACH_LOONGSON32
423 bool "Loongson-1 family of machines"
424 select SYS_SUPPORTS_ZBOOT
426 This enables support for the Loongson-1 family of machines.
428 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
429 the Institute of Computing Technology (ICT), Chinese Academy of
432 config MACH_LOONGSON64
433 bool "Loongson-2/3 family of machines"
434 select SYS_SUPPORTS_ZBOOT
436 This enables the support of Loongson-2/3 family of machines.
438 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
439 family of multi-core CPUs. They are both 64-bit general-purpose
440 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
441 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
442 in the People's Republic of China. The chief architect is Professor
445 config MACH_PISTACHIO
446 bool "IMG Pistachio SoC based boards"
450 select CLKSRC_MIPS_GIC
453 select DMA_NONCOHERENT
458 select MIPS_CPU_SCACHE
462 select SYS_HAS_CPU_MIPS32_R2
463 select SYS_SUPPORTS_32BIT_KERNEL
464 select SYS_SUPPORTS_LITTLE_ENDIAN
465 select SYS_SUPPORTS_MIPS_CPS
466 select SYS_SUPPORTS_MULTITHREADING
467 select SYS_SUPPORTS_RELOCATABLE
468 select SYS_SUPPORTS_ZBOOT
469 select SYS_HAS_EARLY_PRINTK
470 select USE_GENERIC_EARLY_PRINTK_8250
473 This enables support for the IMG Pistachio SoC platform.
476 bool "MIPSfpga Xilinx based boards"
486 select MIPS_CPU_SCACHE
487 select SYS_HAS_EARLY_PRINTK
488 select SYS_HAS_CPU_MIPS32_R2
489 select SYS_SUPPORTS_32BIT_KERNEL
490 select SYS_SUPPORTS_LITTLE_ENDIAN
491 select SYS_SUPPORTS_ZBOOT_UART16550
493 select USE_GENERIC_EARLY_PRINTK_8250
496 This enables support for the IMG University Program MIPSfpga platform.
499 bool "MIPS Malta board"
500 select ARCH_MAY_HAVE_PC_FDC
506 select CLKSRC_MIPS_GIC
508 select DMA_MAYBE_COHERENT
509 select GENERIC_ISA_DMA
510 select HAVE_PCSPKR_PLATFORM
517 select MIPS_CPU_SCACHE
518 select MIPS_L1_CACHE_SHIFT_6
519 select PCI_GT64XXX_PCI0
523 select SYS_HAS_CPU_MIPS32_R1
524 select SYS_HAS_CPU_MIPS32_R2
525 select SYS_HAS_CPU_MIPS32_R3_5
526 select SYS_HAS_CPU_MIPS32_R5
527 select SYS_HAS_CPU_MIPS32_R6
528 select SYS_HAS_CPU_MIPS64_R1
529 select SYS_HAS_CPU_MIPS64_R2
530 select SYS_HAS_CPU_MIPS64_R6
531 select SYS_HAS_CPU_NEVADA
532 select SYS_HAS_CPU_RM7000
533 select SYS_SUPPORTS_32BIT_KERNEL
534 select SYS_SUPPORTS_64BIT_KERNEL
535 select SYS_SUPPORTS_BIG_ENDIAN
536 select SYS_SUPPORTS_HIGHMEM
537 select SYS_SUPPORTS_LITTLE_ENDIAN
538 select SYS_SUPPORTS_MICROMIPS
539 select SYS_SUPPORTS_MIPS_CMP
540 select SYS_SUPPORTS_MIPS_CPS
541 select SYS_SUPPORTS_MIPS16
542 select SYS_SUPPORTS_MULTITHREADING
543 select SYS_SUPPORTS_SMARTMIPS
544 select SYS_SUPPORTS_ZBOOT
545 select SYS_SUPPORTS_RELOCATABLE
548 select ZONE_DMA32 if 64BIT
552 This enables support for the MIPS Technologies Malta evaluation
556 bool "Microchip PIC32 Family"
558 This enables support for the Microchip PIC32 family of platforms.
560 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
564 bool "NEC EMMA2RH Mark-eins board"
568 This enables support for the NEC Electronics Mark-eins boards.
571 bool "NEC VR4100 series based machines"
574 select SYS_HAS_CPU_VR41XX
575 select SYS_SUPPORTS_MIPS16
579 bool "NXP STB220 board"
582 Support for NXP Semiconductors STB220 Development Board.
589 Support for NXP Semiconductors STB225 Development Board.
592 bool "PMC-Sierra MSP chipsets"
595 select DMA_NONCOHERENT
597 select NO_EXCEPT_FILL
599 select SYS_HAS_CPU_MIPS32_R1
600 select SYS_HAS_CPU_MIPS32_R2
601 select SYS_SUPPORTS_32BIT_KERNEL
602 select SYS_SUPPORTS_BIG_ENDIAN
603 select SYS_SUPPORTS_MIPS16
606 select SERIAL_8250_CONSOLE
607 select USB_EHCI_BIG_ENDIAN_MMIO
608 select USB_EHCI_BIG_ENDIAN_DESC
610 This adds support for the PMC-Sierra family of Multi-Service
611 Processor System-On-A-Chips. These parts include a number
612 of integrated peripherals, interfaces and DSPs in addition to
613 a variety of MIPS cores.
616 bool "Ralink based machines"
620 select DMA_NONCOHERENT
623 select SYS_HAS_CPU_MIPS32_R1
624 select SYS_HAS_CPU_MIPS32_R2
625 select SYS_SUPPORTS_32BIT_KERNEL
626 select SYS_SUPPORTS_LITTLE_ENDIAN
627 select SYS_SUPPORTS_MIPS16
628 select SYS_HAS_EARLY_PRINTK
630 select ARCH_HAS_RESET_CONTROLLER
631 select RESET_CONTROLLER
634 bool "SGI IP22 (Indy/Indigo2)"
640 select DEFAULT_SGI_PARTITION
641 select DMA_NONCOHERENT
645 select IP22_CPU_SCACHE
647 select GENERIC_ISA_DMA_SUPPORT_BROKEN
649 select SGI_HAS_INDYDOG
655 select SYS_HAS_CPU_R4X00
656 select SYS_HAS_CPU_R5000
658 # Disable EARLY_PRINTK for now since it leads to overwritten prom
659 # memory during early boot on some machines.
661 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
662 # for a more details discussion
664 # select SYS_HAS_EARLY_PRINTK
665 select SYS_SUPPORTS_32BIT_KERNEL
666 select SYS_SUPPORTS_64BIT_KERNEL
667 select SYS_SUPPORTS_BIG_ENDIAN
668 select MIPS_L1_CACHE_SHIFT_7
670 This are the SGI Indy, Challenge S and Indigo2, as well as certain
671 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
672 that runs on these, say Y here.
675 bool "SGI IP27 (Origin200/2000)"
679 select DEFAULT_SGI_PARTITION
681 select SYS_HAS_EARLY_PRINTK
683 select NR_CPUS_DEFAULT_64
684 select SYS_HAS_CPU_R10000
685 select SYS_SUPPORTS_64BIT_KERNEL
686 select SYS_SUPPORTS_BIG_ENDIAN
687 select SYS_SUPPORTS_NUMA
688 select SYS_SUPPORTS_SMP
689 select MIPS_L1_CACHE_SHIFT_7
691 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
692 workstations. To compile a Linux kernel that runs on these, say Y
696 bool "SGI IP28 (Indigo2 R10k)"
702 select DEFAULT_SGI_PARTITION
703 select DMA_NONCOHERENT
704 select GENERIC_ISA_DMA_SUPPORT_BROKEN
710 select SGI_HAS_INDYDOG
716 select SYS_HAS_CPU_R10000
718 # Disable EARLY_PRINTK for now since it leads to overwritten prom
719 # memory during early boot on some machines.
721 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
722 # for a more details discussion
724 # select SYS_HAS_EARLY_PRINTK
725 select SYS_SUPPORTS_64BIT_KERNEL
726 select SYS_SUPPORTS_BIG_ENDIAN
727 select MIPS_L1_CACHE_SHIFT_7
729 This is the SGI Indigo2 with R10000 processor. To compile a Linux
730 kernel that runs on these, say Y here.
739 select DMA_NONCOHERENT
742 select R5000_CPU_SCACHE
743 select RM7000_CPU_SCACHE
744 select SYS_HAS_CPU_R5000
745 select SYS_HAS_CPU_R10000 if BROKEN
746 select SYS_HAS_CPU_RM7000
747 select SYS_HAS_CPU_NEVADA
748 select SYS_SUPPORTS_64BIT_KERNEL
749 select SYS_SUPPORTS_BIG_ENDIAN
751 If you want this kernel to run on SGI O2 workstation, say Y here.
754 bool "Sibyte BCM91120C-CRhine"
757 select SIBYTE_BCM1120
759 select SYS_HAS_CPU_SB1
760 select SYS_SUPPORTS_BIG_ENDIAN
761 select SYS_SUPPORTS_LITTLE_ENDIAN
764 bool "Sibyte BCM91120x-Carmel"
767 select SIBYTE_BCM1120
769 select SYS_HAS_CPU_SB1
770 select SYS_SUPPORTS_BIG_ENDIAN
771 select SYS_SUPPORTS_LITTLE_ENDIAN
774 bool "Sibyte BCM91125C-CRhone"
777 select SIBYTE_BCM1125
779 select SYS_HAS_CPU_SB1
780 select SYS_SUPPORTS_BIG_ENDIAN
781 select SYS_SUPPORTS_HIGHMEM
782 select SYS_SUPPORTS_LITTLE_ENDIAN
785 bool "Sibyte BCM91125E-Rhone"
788 select SIBYTE_BCM1125H
790 select SYS_HAS_CPU_SB1
791 select SYS_SUPPORTS_BIG_ENDIAN
792 select SYS_SUPPORTS_LITTLE_ENDIAN
795 bool "Sibyte BCM91250A-SWARM"
798 select HAVE_PATA_PLATFORM
801 select SYS_HAS_CPU_SB1
802 select SYS_SUPPORTS_BIG_ENDIAN
803 select SYS_SUPPORTS_HIGHMEM
804 select SYS_SUPPORTS_LITTLE_ENDIAN
805 select ZONE_DMA32 if 64BIT
807 config SIBYTE_LITTLESUR
808 bool "Sibyte BCM91250C2-LittleSur"
811 select HAVE_PATA_PLATFORM
814 select SYS_HAS_CPU_SB1
815 select SYS_SUPPORTS_BIG_ENDIAN
816 select SYS_SUPPORTS_HIGHMEM
817 select SYS_SUPPORTS_LITTLE_ENDIAN
818 select ZONE_DMA32 if 64BIT
820 config SIBYTE_SENTOSA
821 bool "Sibyte BCM91250E-Sentosa"
826 select SYS_HAS_CPU_SB1
827 select SYS_SUPPORTS_BIG_ENDIAN
828 select SYS_SUPPORTS_LITTLE_ENDIAN
831 bool "Sibyte BCM91480B-BigSur"
834 select NR_CPUS_DEFAULT_4
835 select SIBYTE_BCM1x80
837 select SYS_HAS_CPU_SB1
838 select SYS_SUPPORTS_BIG_ENDIAN
839 select SYS_SUPPORTS_HIGHMEM
840 select SYS_SUPPORTS_LITTLE_ENDIAN
841 select ZONE_DMA32 if 64BIT
844 bool "SNI RM200/300/400"
845 select FW_ARC if CPU_LITTLE_ENDIAN
846 select FW_ARC32 if CPU_LITTLE_ENDIAN
847 select FW_SNIPROM if CPU_BIG_ENDIAN
848 select ARCH_MAY_HAVE_PC_FDC
852 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
853 select DMA_NONCOHERENT
854 select GENERIC_ISA_DMA
855 select HAVE_PCSPKR_PLATFORM
862 select MIPS_L1_CACHE_SHIFT_6
863 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
864 select SYS_HAS_CPU_R4X00
865 select SYS_HAS_CPU_R5000
866 select SYS_HAS_CPU_R10000
867 select R5000_CPU_SCACHE
868 select SYS_HAS_EARLY_PRINTK
869 select SYS_SUPPORTS_32BIT_KERNEL
870 select SYS_SUPPORTS_64BIT_KERNEL
871 select SYS_SUPPORTS_BIG_ENDIAN
872 select SYS_SUPPORTS_HIGHMEM
873 select SYS_SUPPORTS_LITTLE_ENDIAN
875 The SNI RM200/300/400 are MIPS-based machines manufactured by
876 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
877 Technology and now in turn merged with Fujitsu. Say Y here to
878 support this machine type.
881 bool "Toshiba TX39 series based machines"
884 bool "Toshiba TX49 series based machines"
886 config MIKROTIK_RB532
887 bool "Mikrotik RB532 boards"
890 select DMA_NONCOHERENT
893 select SYS_HAS_CPU_MIPS32_R1
894 select SYS_SUPPORTS_32BIT_KERNEL
895 select SYS_SUPPORTS_LITTLE_ENDIAN
899 select MIPS_L1_CACHE_SHIFT_4
901 Support the Mikrotik(tm) RouterBoard 532 series,
902 based on the IDT RC32434 SoC.
904 config CAVIUM_OCTEON_SOC
905 bool "Cavium Networks Octeon SoC based boards"
907 select ARCH_PHYS_ADDR_T_64BIT
909 select SYS_SUPPORTS_64BIT_KERNEL
910 select SYS_SUPPORTS_BIG_ENDIAN
912 select EDAC_ATOMIC_SCRUB
913 select SYS_SUPPORTS_LITTLE_ENDIAN
914 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
915 select SYS_HAS_EARLY_PRINTK
916 select SYS_HAS_CPU_CAVIUM_OCTEON
923 select ARCH_SPARSEMEM_ENABLE
924 select SYS_SUPPORTS_SMP
925 select NR_CPUS_DEFAULT_16
927 select MTD_COMPLEX_MAPPINGS
928 select SYS_SUPPORTS_RELOCATABLE
930 This option supports all of the Octeon reference boards from Cavium
931 Networks. It builds a kernel that dynamically determines the Octeon
932 CPU type and supports all known board reference implementations.
933 Some of the supported boards are:
940 Say Y here for most Octeon reference boards.
943 bool "Netlogic XLR/XLS based systems"
946 select SYS_HAS_CPU_XLR
947 select SYS_SUPPORTS_SMP
950 select SYS_SUPPORTS_32BIT_KERNEL
951 select SYS_SUPPORTS_64BIT_KERNEL
952 select ARCH_PHYS_ADDR_T_64BIT
953 select SYS_SUPPORTS_BIG_ENDIAN
954 select SYS_SUPPORTS_HIGHMEM
956 select NR_CPUS_DEFAULT_32
960 select ZONE_DMA32 if 64BIT
962 select SYS_HAS_EARLY_PRINTK
963 select SYS_SUPPORTS_ZBOOT
964 select SYS_SUPPORTS_ZBOOT_UART16550
966 Support for systems based on Netlogic XLR and XLS processors.
967 Say Y here if you have a XLR or XLS based board.
970 bool "Netlogic XLP based systems"
973 select SYS_HAS_CPU_XLP
974 select SYS_SUPPORTS_SMP
976 select SYS_SUPPORTS_32BIT_KERNEL
977 select SYS_SUPPORTS_64BIT_KERNEL
978 select ARCH_PHYS_ADDR_T_64BIT
980 select SYS_SUPPORTS_BIG_ENDIAN
981 select SYS_SUPPORTS_LITTLE_ENDIAN
982 select SYS_SUPPORTS_HIGHMEM
984 select NR_CPUS_DEFAULT_32
988 select ZONE_DMA32 if 64BIT
990 select SYS_HAS_EARLY_PRINTK
992 select SYS_SUPPORTS_ZBOOT
993 select SYS_SUPPORTS_ZBOOT_UART16550
995 This board is based on Netlogic XLP Processor.
996 Say Y here if you have a XLP based board.
999 bool "Para-Virtualized guest system"
1003 select SYS_SUPPORTS_64BIT_KERNEL
1004 select SYS_SUPPORTS_32BIT_KERNEL
1005 select SYS_SUPPORTS_BIG_ENDIAN
1006 select SYS_SUPPORTS_SMP
1007 select NR_CPUS_DEFAULT_4
1008 select SYS_HAS_EARLY_PRINTK
1009 select SYS_HAS_CPU_MIPS32_R2
1010 select SYS_HAS_CPU_MIPS64_R2
1011 select SYS_HAS_CPU_CAVIUM_OCTEON
1013 select SWAP_IO_SPACE
1015 This option supports guest running under ????
1019 source "arch/mips/alchemy/Kconfig"
1020 source "arch/mips/ath25/Kconfig"
1021 source "arch/mips/ath79/Kconfig"
1022 source "arch/mips/bcm47xx/Kconfig"
1023 source "arch/mips/bcm63xx/Kconfig"
1024 source "arch/mips/bmips/Kconfig"
1025 source "arch/mips/generic/Kconfig"
1026 source "arch/mips/jazz/Kconfig"
1027 source "arch/mips/jz4740/Kconfig"
1028 source "arch/mips/lantiq/Kconfig"
1029 source "arch/mips/lasat/Kconfig"
1030 source "arch/mips/pic32/Kconfig"
1031 source "arch/mips/pistachio/Kconfig"
1032 source "arch/mips/pmcs-msp71xx/Kconfig"
1033 source "arch/mips/ralink/Kconfig"
1034 source "arch/mips/sgi-ip27/Kconfig"
1035 source "arch/mips/sibyte/Kconfig"
1036 source "arch/mips/txx9/Kconfig"
1037 source "arch/mips/vr41xx/Kconfig"
1038 source "arch/mips/cavium-octeon/Kconfig"
1039 source "arch/mips/loongson32/Kconfig"
1040 source "arch/mips/loongson64/Kconfig"
1041 source "arch/mips/netlogic/Kconfig"
1042 source "arch/mips/paravirt/Kconfig"
1043 source "arch/mips/xilfpga/Kconfig"
1047 config RWSEM_GENERIC_SPINLOCK
1051 config RWSEM_XCHGADD_ALGORITHM
1054 config GENERIC_HWEIGHT
1058 config GENERIC_CALIBRATE_DELAY
1062 config SCHED_OMIT_FRAME_POINTER
1067 # Select some configuration options automatically based on user selections.
1072 config ARCH_MAY_HAVE_PC_FDC
1108 config MIPS_CLOCK_VSYSCALL
1109 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1118 config ARCH_DMA_ADDR_T_64BIT
1119 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1121 config ARCH_SUPPORTS_UPROBES
1124 config DMA_MAYBE_COHERENT
1125 select DMA_NONCOHERENT
1128 config DMA_PERDEV_COHERENT
1130 select DMA_MAYBE_COHERENT
1135 config DMA_NONCOHERENT
1137 select NEED_DMA_MAP_STATE
1139 config NEED_DMA_MAP_STATE
1142 config SYS_HAS_EARLY_PRINTK
1145 config SYS_SUPPORTS_HOTPLUG_CPU
1148 config MIPS_BONITO64
1163 config NO_IOPORT_MAP
1169 config GENERIC_ISA_DMA
1171 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1174 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1176 select GENERIC_ISA_DMA
1181 config HOLES_IN_ZONE
1184 config SYS_SUPPORTS_RELOCATABLE
1187 Selected if the platform supports relocating the kernel.
1188 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1189 to allow access to command line and entropy sources.
1191 config MIPS_CBPF_JIT
1193 depends on BPF_JIT && HAVE_CBPF_JIT
1195 config MIPS_EBPF_JIT
1197 depends on BPF_JIT && HAVE_EBPF_JIT
1201 # Endianness selection. Sufficiently obscure so many users don't know what to
1202 # answer,so we try hard to limit the available choices. Also the use of a
1203 # choice statement should be more obvious to the user.
1206 prompt "Endianness selection"
1208 Some MIPS machines can be configured for either little or big endian
1209 byte order. These modes require different kernels and a different
1210 Linux distribution. In general there is one preferred byteorder for a
1211 particular system but some systems are just as commonly used in the
1212 one or the other endianness.
1214 config CPU_BIG_ENDIAN
1216 depends on SYS_SUPPORTS_BIG_ENDIAN
1218 config CPU_LITTLE_ENDIAN
1219 bool "Little endian"
1220 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1227 config SYS_SUPPORTS_APM_EMULATION
1230 config SYS_SUPPORTS_BIG_ENDIAN
1233 config SYS_SUPPORTS_LITTLE_ENDIAN
1236 config SYS_SUPPORTS_HUGETLBFS
1238 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1241 config MIPS_HUGE_TLB_SUPPORT
1242 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1259 config PCI_GT64XXX_PCI0
1262 config NO_EXCEPT_FILL
1269 select DMA_NONCOHERENT
1271 select SWAP_IO_SPACE
1272 select SYS_HAS_CPU_R5500
1273 select SYS_SUPPORTS_32BIT_KERNEL
1274 select SYS_SUPPORTS_64BIT_KERNEL
1275 select SYS_SUPPORTS_BIG_ENDIAN
1282 select DMA_NONCOHERENT
1283 select SYS_HAS_CPU_MIPS32_R2
1284 select SYS_SUPPORTS_32BIT_KERNEL
1285 select SYS_SUPPORTS_LITTLE_ENDIAN
1286 select SYS_SUPPORTS_BIG_ENDIAN
1287 select SYS_SUPPORTS_MIPS16
1288 select CPU_MIPSR2_IRQ_VI
1297 config SWAP_IO_SPACE
1300 config SGI_HAS_INDYDOG
1312 config SGI_HAS_ZILOG
1315 config SGI_HAS_I8042
1318 config DEFAULT_SGI_PARTITION
1330 config MIPS_L1_CACHE_SHIFT_4
1333 config MIPS_L1_CACHE_SHIFT_5
1336 config MIPS_L1_CACHE_SHIFT_6
1339 config MIPS_L1_CACHE_SHIFT_7
1342 config MIPS_L1_CACHE_SHIFT
1344 default "7" if MIPS_L1_CACHE_SHIFT_7
1345 default "6" if MIPS_L1_CACHE_SHIFT_6
1346 default "5" if MIPS_L1_CACHE_SHIFT_5
1347 default "4" if MIPS_L1_CACHE_SHIFT_4
1350 config HAVE_STD_PC_SERIAL_PORT
1354 bool "ARC console support"
1355 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1359 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1364 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1373 menu "CPU selection"
1379 config CPU_LOONGSON3
1380 bool "Loongson 3 CPU"
1381 depends on SYS_HAS_CPU_LOONGSON3
1382 select CPU_SUPPORTS_64BIT_KERNEL
1383 select CPU_SUPPORTS_HIGHMEM
1384 select CPU_SUPPORTS_HUGEPAGES
1385 select WEAK_ORDERING
1386 select WEAK_REORDERING_BEYOND_LLSC
1387 select MIPS_PGD_C0_CONTEXT
1388 select MIPS_L1_CACHE_SHIFT_6
1389 select MIPS_FP_SUPPORT
1392 The Loongson 3 processor implements the MIPS64R2 instruction
1393 set with many extensions.
1395 config LOONGSON3_ENHANCEMENT
1396 bool "New Loongson 3 CPU Enhancements"
1399 select CPU_HAS_PREFETCH
1400 depends on CPU_LOONGSON3
1402 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1403 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1404 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1405 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1406 Fast TLB refill support, etc.
1408 This option enable those enhancements which are not probed at run
1409 time. If you want a generic kernel to run on all Loongson 3 machines,
1410 please say 'N' here. If you want a high-performance kernel to run on
1411 new Loongson 3 machines only, please say 'Y' here.
1413 config CPU_LOONGSON2E
1415 depends on SYS_HAS_CPU_LOONGSON2E
1416 select CPU_LOONGSON2
1418 The Loongson 2E processor implements the MIPS III instruction set
1419 with many extensions.
1421 It has an internal FPGA northbridge, which is compatible to
1424 config CPU_LOONGSON2F
1426 depends on SYS_HAS_CPU_LOONGSON2F
1427 select CPU_LOONGSON2
1430 The Loongson 2F processor implements the MIPS III instruction set
1431 with many extensions.
1433 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1434 have a similar programming interface with FPGA northbridge used in
1437 config CPU_LOONGSON1B
1439 depends on SYS_HAS_CPU_LOONGSON1B
1440 select CPU_LOONGSON1
1441 select LEDS_GPIO_REGISTER
1443 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1444 release 2 instruction set.
1446 config CPU_LOONGSON1C
1448 depends on SYS_HAS_CPU_LOONGSON1C
1449 select CPU_LOONGSON1
1450 select LEDS_GPIO_REGISTER
1452 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1453 release 2 instruction set.
1455 config CPU_MIPS32_R1
1456 bool "MIPS32 Release 1"
1457 depends on SYS_HAS_CPU_MIPS32_R1
1458 select CPU_HAS_PREFETCH
1459 select CPU_SUPPORTS_32BIT_KERNEL
1460 select CPU_SUPPORTS_HIGHMEM
1462 Choose this option to build a kernel for release 1 or later of the
1463 MIPS32 architecture. Most modern embedded systems with a 32-bit
1464 MIPS processor are based on a MIPS32 processor. If you know the
1465 specific type of processor in your system, choose those that one
1466 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1467 Release 2 of the MIPS32 architecture is available since several
1468 years so chances are you even have a MIPS32 Release 2 processor
1469 in which case you should choose CPU_MIPS32_R2 instead for better
1472 config CPU_MIPS32_R2
1473 bool "MIPS32 Release 2"
1474 depends on SYS_HAS_CPU_MIPS32_R2
1475 select CPU_HAS_PREFETCH
1476 select CPU_SUPPORTS_32BIT_KERNEL
1477 select CPU_SUPPORTS_HIGHMEM
1478 select CPU_SUPPORTS_MSA
1481 Choose this option to build a kernel for release 2 or later of the
1482 MIPS32 architecture. Most modern embedded systems with a 32-bit
1483 MIPS processor are based on a MIPS32 processor. If you know the
1484 specific type of processor in your system, choose those that one
1485 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1487 config CPU_MIPS32_R6
1488 bool "MIPS32 Release 6"
1489 depends on SYS_HAS_CPU_MIPS32_R6
1490 select CPU_HAS_PREFETCH
1491 select CPU_SUPPORTS_32BIT_KERNEL
1492 select CPU_SUPPORTS_HIGHMEM
1493 select CPU_SUPPORTS_MSA
1496 select MIPS_O32_FP64_SUPPORT
1498 Choose this option to build a kernel for release 6 or later of the
1499 MIPS32 architecture. New MIPS processors, starting with the Warrior
1500 family, are based on a MIPS32r6 processor. If you own an older
1501 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1503 config CPU_MIPS64_R1
1504 bool "MIPS64 Release 1"
1505 depends on SYS_HAS_CPU_MIPS64_R1
1506 select CPU_HAS_PREFETCH
1507 select CPU_SUPPORTS_32BIT_KERNEL
1508 select CPU_SUPPORTS_64BIT_KERNEL
1509 select CPU_SUPPORTS_HIGHMEM
1510 select CPU_SUPPORTS_HUGEPAGES
1512 Choose this option to build a kernel for release 1 or later of the
1513 MIPS64 architecture. Many modern embedded systems with a 64-bit
1514 MIPS processor are based on a MIPS64 processor. If you know the
1515 specific type of processor in your system, choose those that one
1516 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1517 Release 2 of the MIPS64 architecture is available since several
1518 years so chances are you even have a MIPS64 Release 2 processor
1519 in which case you should choose CPU_MIPS64_R2 instead for better
1522 config CPU_MIPS64_R2
1523 bool "MIPS64 Release 2"
1524 depends on SYS_HAS_CPU_MIPS64_R2
1525 select CPU_HAS_PREFETCH
1526 select CPU_SUPPORTS_32BIT_KERNEL
1527 select CPU_SUPPORTS_64BIT_KERNEL
1528 select CPU_SUPPORTS_HIGHMEM
1529 select CPU_SUPPORTS_HUGEPAGES
1530 select CPU_SUPPORTS_MSA
1533 Choose this option to build a kernel for release 2 or later of the
1534 MIPS64 architecture. Many modern embedded systems with a 64-bit
1535 MIPS processor are based on a MIPS64 processor. If you know the
1536 specific type of processor in your system, choose those that one
1537 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1539 config CPU_MIPS64_R6
1540 bool "MIPS64 Release 6"
1541 depends on SYS_HAS_CPU_MIPS64_R6
1542 select CPU_HAS_PREFETCH
1543 select CPU_SUPPORTS_32BIT_KERNEL
1544 select CPU_SUPPORTS_64BIT_KERNEL
1545 select CPU_SUPPORTS_HIGHMEM
1546 select CPU_SUPPORTS_MSA
1548 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1551 Choose this option to build a kernel for release 6 or later of the
1552 MIPS64 architecture. New MIPS processors, starting with the Warrior
1553 family, are based on a MIPS64r6 processor. If you own an older
1554 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1558 depends on SYS_HAS_CPU_R3000
1560 select CPU_SUPPORTS_32BIT_KERNEL
1561 select CPU_SUPPORTS_HIGHMEM
1563 Please make sure to pick the right CPU type. Linux/MIPS is not
1564 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1565 *not* work on R4000 machines and vice versa. However, since most
1566 of the supported machines have an R4000 (or similar) CPU, R4x00
1567 might be a safe bet. If the resulting kernel does not work,
1568 try to recompile with R3000.
1572 depends on SYS_HAS_CPU_TX39XX
1573 select CPU_SUPPORTS_32BIT_KERNEL
1577 depends on SYS_HAS_CPU_VR41XX
1578 select CPU_SUPPORTS_32BIT_KERNEL
1579 select CPU_SUPPORTS_64BIT_KERNEL
1581 The options selects support for the NEC VR4100 series of processors.
1582 Only choose this option if you have one of these processors as a
1583 kernel built with this option will not run on any other type of
1584 processor or vice versa.
1588 depends on SYS_HAS_CPU_R4300
1589 select CPU_SUPPORTS_32BIT_KERNEL
1590 select CPU_SUPPORTS_64BIT_KERNEL
1592 MIPS Technologies R4300-series processors.
1596 depends on SYS_HAS_CPU_R4X00
1597 select CPU_SUPPORTS_32BIT_KERNEL
1598 select CPU_SUPPORTS_64BIT_KERNEL
1599 select CPU_SUPPORTS_HUGEPAGES
1601 MIPS Technologies R4000-series processors other than 4300, including
1602 the R4000, R4400, R4600, and 4700.
1606 depends on SYS_HAS_CPU_TX49XX
1607 select CPU_HAS_PREFETCH
1608 select CPU_SUPPORTS_32BIT_KERNEL
1609 select CPU_SUPPORTS_64BIT_KERNEL
1610 select CPU_SUPPORTS_HUGEPAGES
1614 depends on SYS_HAS_CPU_R5000
1615 select CPU_SUPPORTS_32BIT_KERNEL
1616 select CPU_SUPPORTS_64BIT_KERNEL
1617 select CPU_SUPPORTS_HUGEPAGES
1619 MIPS Technologies R5000-series processors other than the Nevada.
1623 depends on SYS_HAS_CPU_R5432
1624 select CPU_SUPPORTS_32BIT_KERNEL
1625 select CPU_SUPPORTS_64BIT_KERNEL
1626 select CPU_SUPPORTS_HUGEPAGES
1630 depends on SYS_HAS_CPU_R5500
1631 select CPU_SUPPORTS_32BIT_KERNEL
1632 select CPU_SUPPORTS_64BIT_KERNEL
1633 select CPU_SUPPORTS_HUGEPAGES
1635 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1640 depends on SYS_HAS_CPU_NEVADA
1641 select CPU_SUPPORTS_32BIT_KERNEL
1642 select CPU_SUPPORTS_64BIT_KERNEL
1643 select CPU_SUPPORTS_HUGEPAGES
1645 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1649 depends on SYS_HAS_CPU_R8000
1650 select CPU_HAS_PREFETCH
1651 select CPU_SUPPORTS_64BIT_KERNEL
1653 MIPS Technologies R8000 processors. Note these processors are
1654 uncommon and the support for them is incomplete.
1658 depends on SYS_HAS_CPU_R10000
1659 select CPU_HAS_PREFETCH
1660 select CPU_SUPPORTS_32BIT_KERNEL
1661 select CPU_SUPPORTS_64BIT_KERNEL
1662 select CPU_SUPPORTS_HIGHMEM
1663 select CPU_SUPPORTS_HUGEPAGES
1665 MIPS Technologies R10000-series processors.
1669 depends on SYS_HAS_CPU_RM7000
1670 select CPU_HAS_PREFETCH
1671 select CPU_SUPPORTS_32BIT_KERNEL
1672 select CPU_SUPPORTS_64BIT_KERNEL
1673 select CPU_SUPPORTS_HIGHMEM
1674 select CPU_SUPPORTS_HUGEPAGES
1678 depends on SYS_HAS_CPU_SB1
1679 select CPU_SUPPORTS_32BIT_KERNEL
1680 select CPU_SUPPORTS_64BIT_KERNEL
1681 select CPU_SUPPORTS_HIGHMEM
1682 select CPU_SUPPORTS_HUGEPAGES
1683 select WEAK_ORDERING
1685 config CPU_CAVIUM_OCTEON
1686 bool "Cavium Octeon processor"
1687 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1688 select CPU_HAS_PREFETCH
1689 select CPU_SUPPORTS_64BIT_KERNEL
1690 select WEAK_ORDERING
1691 select CPU_SUPPORTS_HIGHMEM
1692 select CPU_SUPPORTS_HUGEPAGES
1693 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1694 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1695 select MIPS_L1_CACHE_SHIFT_7
1698 The Cavium Octeon processor is a highly integrated chip containing
1699 many ethernet hardware widgets for networking tasks. The processor
1700 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1701 Full details can be found at http://www.caviumnetworks.com.
1704 bool "Broadcom BMIPS"
1705 depends on SYS_HAS_CPU_BMIPS
1707 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1708 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1709 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1710 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1711 select CPU_SUPPORTS_32BIT_KERNEL
1712 select DMA_NONCOHERENT
1714 select SWAP_IO_SPACE
1715 select WEAK_ORDERING
1716 select CPU_SUPPORTS_HIGHMEM
1717 select CPU_HAS_PREFETCH
1718 select CPU_SUPPORTS_CPUFREQ
1719 select MIPS_EXTERNAL_TIMER
1721 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1724 bool "Netlogic XLR SoC"
1725 depends on SYS_HAS_CPU_XLR
1726 select CPU_SUPPORTS_32BIT_KERNEL
1727 select CPU_SUPPORTS_64BIT_KERNEL
1728 select CPU_SUPPORTS_HIGHMEM
1729 select CPU_SUPPORTS_HUGEPAGES
1730 select WEAK_ORDERING
1731 select WEAK_REORDERING_BEYOND_LLSC
1733 Netlogic Microsystems XLR/XLS processors.
1736 bool "Netlogic XLP SoC"
1737 depends on SYS_HAS_CPU_XLP
1738 select CPU_SUPPORTS_32BIT_KERNEL
1739 select CPU_SUPPORTS_64BIT_KERNEL
1740 select CPU_SUPPORTS_HIGHMEM
1741 select WEAK_ORDERING
1742 select WEAK_REORDERING_BEYOND_LLSC
1743 select CPU_HAS_PREFETCH
1745 select CPU_SUPPORTS_HUGEPAGES
1746 select MIPS_ASID_BITS_VARIABLE
1748 Netlogic Microsystems XLP processors.
1751 config CPU_MIPS32_3_5_FEATURES
1752 bool "MIPS32 Release 3.5 Features"
1753 depends on SYS_HAS_CPU_MIPS32_R3_5
1754 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1756 Choose this option to build a kernel for release 2 or later of the
1757 MIPS32 architecture including features from the 3.5 release such as
1758 support for Enhanced Virtual Addressing (EVA).
1760 config CPU_MIPS32_3_5_EVA
1761 bool "Enhanced Virtual Addressing (EVA)"
1762 depends on CPU_MIPS32_3_5_FEATURES
1766 Choose this option if you want to enable the Enhanced Virtual
1767 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1768 One of its primary benefits is an increase in the maximum size
1769 of lowmem (up to 3GB). If unsure, say 'N' here.
1771 config CPU_MIPS32_R5_FEATURES
1772 bool "MIPS32 Release 5 Features"
1773 depends on SYS_HAS_CPU_MIPS32_R5
1774 depends on CPU_MIPS32_R2
1776 Choose this option to build a kernel for release 2 or later of the
1777 MIPS32 architecture including features from release 5 such as
1778 support for Extended Physical Addressing (XPA).
1780 config CPU_MIPS32_R5_XPA
1781 bool "Extended Physical Addressing (XPA)"
1782 depends on CPU_MIPS32_R5_FEATURES
1784 depends on !PAGE_SIZE_4KB
1785 depends on SYS_SUPPORTS_HIGHMEM
1788 select ARCH_PHYS_ADDR_T_64BIT
1791 Choose this option if you want to enable the Extended Physical
1792 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1793 benefit is to increase physical addressing equal to or greater
1794 than 40 bits. Note that this has the side effect of turning on
1795 64-bit addressing which in turn makes the PTEs 64-bit in size.
1796 If unsure, say 'N' here.
1799 config CPU_NOP_WORKAROUNDS
1802 config CPU_JUMP_WORKAROUNDS
1805 config CPU_LOONGSON2F_WORKAROUNDS
1806 bool "Loongson 2F Workarounds"
1808 select CPU_NOP_WORKAROUNDS
1809 select CPU_JUMP_WORKAROUNDS
1811 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1812 require workarounds. Without workarounds the system may hang
1813 unexpectedly. For more information please refer to the gas
1814 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1816 Loongson 2F03 and later have fixed these issues and no workarounds
1817 are needed. The workarounds have no significant side effect on them
1818 but may decrease the performance of the system so this option should
1819 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1822 If unsure, please say Y.
1823 endif # CPU_LOONGSON2F
1825 config SYS_SUPPORTS_ZBOOT
1827 select HAVE_KERNEL_GZIP
1828 select HAVE_KERNEL_BZIP2
1829 select HAVE_KERNEL_LZ4
1830 select HAVE_KERNEL_LZMA
1831 select HAVE_KERNEL_LZO
1832 select HAVE_KERNEL_XZ
1834 config SYS_SUPPORTS_ZBOOT_UART16550
1836 select SYS_SUPPORTS_ZBOOT
1838 config SYS_SUPPORTS_ZBOOT_UART_PROM
1840 select SYS_SUPPORTS_ZBOOT
1842 config CPU_LOONGSON2
1844 select CPU_SUPPORTS_32BIT_KERNEL
1845 select CPU_SUPPORTS_64BIT_KERNEL
1846 select CPU_SUPPORTS_HIGHMEM
1847 select CPU_SUPPORTS_HUGEPAGES
1849 config CPU_LOONGSON1
1853 select CPU_HAS_PREFETCH
1854 select CPU_SUPPORTS_32BIT_KERNEL
1855 select CPU_SUPPORTS_HIGHMEM
1856 select CPU_SUPPORTS_CPUFREQ
1858 config CPU_BMIPS32_3300
1859 select SMP_UP if SMP
1862 config CPU_BMIPS4350
1864 select SYS_SUPPORTS_SMP
1865 select SYS_SUPPORTS_HOTPLUG_CPU
1867 config CPU_BMIPS4380
1869 select MIPS_L1_CACHE_SHIFT_6
1870 select SYS_SUPPORTS_SMP
1871 select SYS_SUPPORTS_HOTPLUG_CPU
1874 config CPU_BMIPS5000
1876 select MIPS_CPU_SCACHE
1877 select MIPS_L1_CACHE_SHIFT_7
1878 select SYS_SUPPORTS_SMP
1879 select SYS_SUPPORTS_HOTPLUG_CPU
1882 config SYS_HAS_CPU_LOONGSON3
1884 select CPU_SUPPORTS_CPUFREQ
1887 config SYS_HAS_CPU_LOONGSON2E
1890 config SYS_HAS_CPU_LOONGSON2F
1892 select CPU_SUPPORTS_CPUFREQ
1893 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1894 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1896 config SYS_HAS_CPU_LOONGSON1B
1899 config SYS_HAS_CPU_LOONGSON1C
1902 config SYS_HAS_CPU_MIPS32_R1
1905 config SYS_HAS_CPU_MIPS32_R2
1908 config SYS_HAS_CPU_MIPS32_R3_5
1911 config SYS_HAS_CPU_MIPS32_R5
1914 config SYS_HAS_CPU_MIPS32_R6
1917 config SYS_HAS_CPU_MIPS64_R1
1920 config SYS_HAS_CPU_MIPS64_R2
1923 config SYS_HAS_CPU_MIPS64_R6
1926 config SYS_HAS_CPU_R3000
1929 config SYS_HAS_CPU_TX39XX
1932 config SYS_HAS_CPU_VR41XX
1935 config SYS_HAS_CPU_R4300
1938 config SYS_HAS_CPU_R4X00
1941 config SYS_HAS_CPU_TX49XX
1944 config SYS_HAS_CPU_R5000
1947 config SYS_HAS_CPU_R5432
1950 config SYS_HAS_CPU_R5500
1953 config SYS_HAS_CPU_NEVADA
1956 config SYS_HAS_CPU_R8000
1959 config SYS_HAS_CPU_R10000
1962 config SYS_HAS_CPU_RM7000
1965 config SYS_HAS_CPU_SB1
1968 config SYS_HAS_CPU_CAVIUM_OCTEON
1971 config SYS_HAS_CPU_BMIPS
1974 config SYS_HAS_CPU_BMIPS32_3300
1976 select SYS_HAS_CPU_BMIPS
1978 config SYS_HAS_CPU_BMIPS4350
1980 select SYS_HAS_CPU_BMIPS
1982 config SYS_HAS_CPU_BMIPS4380
1984 select SYS_HAS_CPU_BMIPS
1986 config SYS_HAS_CPU_BMIPS5000
1988 select SYS_HAS_CPU_BMIPS
1990 config SYS_HAS_CPU_XLR
1993 config SYS_HAS_CPU_XLP
1996 config MIPS_MALTA_PM
1997 depends on MIPS_MALTA
2003 # CPU may reorder R->R, R->W, W->R, W->W
2004 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2006 config WEAK_ORDERING
2010 # CPU may reorder reads and writes beyond LL/SC
2011 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2013 config WEAK_REORDERING_BEYOND_LLSC
2018 # These two indicate any level of the MIPS32 and MIPS64 architecture
2022 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2026 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2029 # These two indicate the revision of the architecture, either Release 1 or Release 2
2033 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2037 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2043 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2045 select HAVE_ARCH_BITREVERSE
2046 select MIPS_ASID_BITS_VARIABLE
2055 config SYS_SUPPORTS_32BIT_KERNEL
2057 config SYS_SUPPORTS_64BIT_KERNEL
2059 config CPU_SUPPORTS_32BIT_KERNEL
2061 config CPU_SUPPORTS_64BIT_KERNEL
2063 config CPU_SUPPORTS_CPUFREQ
2065 config CPU_SUPPORTS_ADDRWINCFG
2067 config CPU_SUPPORTS_HUGEPAGES
2069 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2071 config MIPS_PGD_C0_CONTEXT
2073 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2076 # Set to y for ptrace access to watch registers.
2078 config HARDWARE_WATCHPOINTS
2080 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2085 prompt "Kernel code model"
2087 You should only select this option if you have a workload that
2088 actually benefits from 64-bit processing or if your machine has
2089 large memory. You will only be presented a single option in this
2090 menu if your system does not support both 32-bit and 64-bit kernels.
2093 bool "32-bit kernel"
2094 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2097 Select this option if you want to build a 32-bit kernel.
2100 bool "64-bit kernel"
2101 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2103 Select this option if you want to build a 64-bit kernel.
2108 bool "KVM Guest Kernel"
2109 depends on BROKEN_ON_SMP
2111 Select this option if building a guest kernel for KVM (Trap & Emulate)
2114 config KVM_GUEST_TIMER_FREQ
2115 int "Count/Compare Timer Frequency (MHz)"
2116 depends on KVM_GUEST
2119 Set this to non-zero if building a guest kernel for KVM to skip RTC
2120 emulation when determining guest CPU Frequency. Instead, the guest's
2121 timer frequency is specified directly.
2123 config MIPS_VA_BITS_48
2124 bool "48 bits virtual memory"
2127 Support a maximum at least 48 bits of application virtual
2128 memory. Default is 40 bits or less, depending on the CPU.
2129 For page sizes 16k and above, this option results in a small
2130 memory overhead for page tables. For 4k page size, a fourth
2131 level of page tables is added which imposes both a memory
2132 overhead as well as slower TLB fault handling.
2137 prompt "Kernel page size"
2138 default PAGE_SIZE_4KB
2140 config PAGE_SIZE_4KB
2142 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2144 This option select the standard 4kB Linux page size. On some
2145 R3000-family processors this is the only available page size. Using
2146 4kB page size will minimize memory consumption and is therefore
2147 recommended for low memory systems.
2149 config PAGE_SIZE_8KB
2151 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2152 depends on !MIPS_VA_BITS_48
2154 Using 8kB page size will result in higher performance kernel at
2155 the price of higher memory consumption. This option is available
2156 only on R8000 and cnMIPS processors. Note that you will need a
2157 suitable Linux distribution to support this.
2159 config PAGE_SIZE_16KB
2161 depends on !CPU_R3000 && !CPU_TX39XX
2163 Using 16kB page size will result in higher performance kernel at
2164 the price of higher memory consumption. This option is available on
2165 all non-R3000 family processors. Note that you will need a suitable
2166 Linux distribution to support this.
2168 config PAGE_SIZE_32KB
2170 depends on CPU_CAVIUM_OCTEON
2171 depends on !MIPS_VA_BITS_48
2173 Using 32kB page size will result in higher performance kernel at
2174 the price of higher memory consumption. This option is available
2175 only on cnMIPS cores. Note that you will need a suitable Linux
2176 distribution to support this.
2178 config PAGE_SIZE_64KB
2180 depends on !CPU_R3000 && !CPU_TX39XX
2182 Using 64kB page size will result in higher performance kernel at
2183 the price of higher memory consumption. This option is available on
2184 all non-R3000 family processor. Not that at the time of this
2185 writing this option is still high experimental.
2189 config FORCE_MAX_ZONEORDER
2190 int "Maximum zone order"
2191 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2192 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2193 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2194 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2195 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2196 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2200 The kernel memory allocator divides physically contiguous memory
2201 blocks into "zones", where each zone is a power of two number of
2202 pages. This option selects the largest power of two that the kernel
2203 keeps in the memory allocator. If you need to allocate very large
2204 blocks of physically contiguous memory, then you may need to
2205 increase this value.
2207 This config option is actually maximum order plus one. For example,
2208 a value of 11 means that the largest free memory block is 2^10 pages.
2210 The page size is not necessarily 4KB. Keep this in mind
2211 when choosing a value for this option.
2216 config IP22_CPU_SCACHE
2221 # Support for a MIPS32 / MIPS64 style S-caches
2223 config MIPS_CPU_SCACHE
2227 config R5000_CPU_SCACHE
2231 config RM7000_CPU_SCACHE
2235 config SIBYTE_DMA_PAGEOPS
2236 bool "Use DMA to clear/copy pages"
2239 Instead of using the CPU to zero and copy pages, use a Data Mover
2240 channel. These DMA channels are otherwise unused by the standard
2241 SiByte Linux port. Seems to give a small performance benefit.
2243 config CPU_HAS_PREFETCH
2246 config CPU_GENERIC_DUMP_TLB
2248 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
2252 default y if !(CPU_R3000 || CPU_TX39XX)
2254 config CPU_R4K_CACHE_TLB
2256 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2259 bool "MIPS MT SMP support (1 TC on each available VPE)"
2261 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2262 select CPU_MIPSR2_IRQ_VI
2263 select CPU_MIPSR2_IRQ_EI
2268 select SYS_SUPPORTS_SMP
2269 select SYS_SUPPORTS_SCHED_SMT
2270 select MIPS_PERF_SHARED_TC_COUNTERS
2272 This is a kernel model which is known as SMVP. This is supported
2273 on cores with the MT ASE and uses the available VPEs to implement
2274 virtual processors which supports SMP. This is equivalent to the
2275 Intel Hyperthreading feature. For further information go to
2276 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2282 bool "SMT (multithreading) scheduler support"
2283 depends on SYS_SUPPORTS_SCHED_SMT
2286 SMT scheduler support improves the CPU scheduler's decision making
2287 when dealing with MIPS MT enabled cores at a cost of slightly
2288 increased overhead in some places. If unsure say N here.
2290 config SYS_SUPPORTS_SCHED_SMT
2293 config SYS_SUPPORTS_MULTITHREADING
2296 config MIPS_MT_FPAFF
2297 bool "Dynamic FPU affinity for FP-intensive threads"
2299 depends on MIPS_MT_SMP
2301 config MIPSR2_TO_R6_EMULATOR
2302 bool "MIPS R2-to-R6 emulator"
2303 depends on CPU_MIPSR6
2306 Choose this option if you want to run non-R6 MIPS userland code.
2307 Even if you say 'Y' here, the emulator will still be disabled by
2308 default. You can enable it using the 'mipsr2emu' kernel option.
2309 The only reason this is a build-time option is to save ~14K from the
2312 config MIPS_VPE_LOADER
2313 bool "VPE loader support."
2314 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2315 select CPU_MIPSR2_IRQ_VI
2316 select CPU_MIPSR2_IRQ_EI
2319 Includes a loader for loading an elf relocatable object
2320 onto another VPE and running it.
2322 config MIPS_VPE_LOADER_CMP
2325 depends on MIPS_VPE_LOADER && MIPS_CMP
2327 config MIPS_VPE_LOADER_MT
2330 depends on MIPS_VPE_LOADER && !MIPS_CMP
2332 config MIPS_VPE_LOADER_TOM
2333 bool "Load VPE program into memory hidden from linux"
2334 depends on MIPS_VPE_LOADER
2337 The loader can use memory that is present but has been hidden from
2338 Linux using the kernel command line option "mem=xxMB". It's up to
2339 you to ensure the amount you put in the option and the space your
2340 program requires is less or equal to the amount physically present.
2342 config MIPS_VPE_APSP_API
2343 bool "Enable support for AP/SP API (RTLX)"
2344 depends on MIPS_VPE_LOADER
2347 config MIPS_VPE_APSP_API_CMP
2350 depends on MIPS_VPE_APSP_API && MIPS_CMP
2352 config MIPS_VPE_APSP_API_MT
2355 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2358 bool "MIPS CMP framework support (DEPRECATED)"
2359 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2362 select SYS_SUPPORTS_SMP
2363 select WEAK_ORDERING
2366 Select this if you are using a bootloader which implements the "CMP
2367 framework" protocol (ie. YAMON) and want your kernel to make use of
2368 its ability to start secondary CPUs.
2370 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2374 bool "MIPS Coherent Processing System support"
2375 depends on SYS_SUPPORTS_MIPS_CPS
2377 select MIPS_CPS_PM if HOTPLUG_CPU
2379 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2380 select SYS_SUPPORTS_HOTPLUG_CPU
2381 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2382 select SYS_SUPPORTS_SMP
2383 select WEAK_ORDERING
2385 Select this if you wish to run an SMP kernel across multiple cores
2386 within a MIPS Coherent Processing System. When this option is
2387 enabled the kernel will probe for other cores and boot them with
2388 no external assistance. It is safe to enable this when hardware
2389 support is unavailable.
2402 config SB1_PASS_2_WORKAROUNDS
2404 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2407 config SB1_PASS_2_1_WORKAROUNDS
2409 depends on CPU_SB1 && CPU_SB1_PASS_2
2413 config ARCH_PHYS_ADDR_T_64BIT
2417 prompt "SmartMIPS or microMIPS ASE support"
2419 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2422 Select this if you want neither microMIPS nor SmartMIPS support
2424 config CPU_HAS_SMARTMIPS
2425 depends on SYS_SUPPORTS_SMARTMIPS
2428 SmartMIPS is a extension of the MIPS32 architecture aimed at
2429 increased security at both hardware and software level for
2430 smartcards. Enabling this option will allow proper use of the
2431 SmartMIPS instructions by Linux applications. However a kernel with
2432 this option will not work on a MIPS core without SmartMIPS core. If
2433 you don't know you probably don't have SmartMIPS and should say N
2436 config CPU_MICROMIPS
2437 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2440 When this option is enabled the kernel will be built using the
2446 bool "Support for the MIPS SIMD Architecture"
2447 depends on CPU_SUPPORTS_MSA
2448 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2450 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2451 and a set of SIMD instructions to operate on them. When this option
2452 is enabled the kernel will support allocating & switching MSA
2453 vector register contexts. If you know that your kernel will only be
2454 running on CPUs which do not support MSA or that your userland will
2455 not be making use of it then you may wish to say N here to reduce
2456 the size & complexity of your kernel.
2470 # Vectored interrupt mode is an R2 feature
2472 config CPU_MIPSR2_IRQ_VI
2476 # Extended interrupt mode is an R2 feature
2478 config CPU_MIPSR2_IRQ_EI
2483 depends on !CPU_R3000
2489 config CPU_DADDI_WORKAROUNDS
2492 config CPU_R4000_WORKAROUNDS
2494 select CPU_R4400_WORKAROUNDS
2496 config CPU_R4400_WORKAROUNDS
2499 config MIPS_ASID_SHIFT
2501 default 6 if CPU_R3000 || CPU_TX39XX
2502 default 4 if CPU_R8000
2505 config MIPS_ASID_BITS
2507 default 0 if MIPS_ASID_BITS_VARIABLE
2508 default 6 if CPU_R3000 || CPU_TX39XX
2511 config MIPS_ASID_BITS_VARIABLE
2515 # - Highmem only makes sense for the 32-bit kernel.
2516 # - The current highmem code will only work properly on physically indexed
2517 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2518 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2519 # moment we protect the user and offer the highmem option only on machines
2520 # where it's known to be safe. This will not offer highmem on a few systems
2521 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2522 # indexed CPUs but we're playing safe.
2523 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2524 # know they might have memory configurations that could make use of highmem
2528 bool "High Memory Support"
2529 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2531 config CPU_SUPPORTS_HIGHMEM
2534 config SYS_SUPPORTS_HIGHMEM
2537 config SYS_SUPPORTS_SMARTMIPS
2540 config SYS_SUPPORTS_MICROMIPS
2543 config SYS_SUPPORTS_MIPS16
2546 This option must be set if a kernel might be executed on a MIPS16-
2547 enabled CPU even if MIPS16 is not actually being used. In other
2548 words, it makes the kernel MIPS16-tolerant.
2550 config CPU_SUPPORTS_MSA
2553 config ARCH_FLATMEM_ENABLE
2555 depends on !NUMA && !CPU_LOONGSON2
2557 config ARCH_DISCONTIGMEM_ENABLE
2559 default y if SGI_IP27
2561 Say Y to support efficient handling of discontiguous physical memory,
2562 for architectures which are either NUMA (Non-Uniform Memory Access)
2563 or have huge holes in the physical address space for other reasons.
2564 See <file:Documentation/vm/numa> for more.
2566 config ARCH_SPARSEMEM_ENABLE
2568 select SPARSEMEM_STATIC
2572 depends on SYS_SUPPORTS_NUMA
2574 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2575 Access). This option improves performance on systems with more
2576 than two nodes; on two node systems it is generally better to
2577 leave it disabled; on single node systems disable this option
2580 config SYS_SUPPORTS_NUMA
2584 bool "Relocatable kernel"
2585 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2587 This builds a kernel image that retains relocation information
2588 so it can be loaded someplace besides the default 1MB.
2589 The relocations make the kernel binary about 15% larger,
2590 but are discarded at runtime
2592 config RELOCATION_TABLE_SIZE
2593 hex "Relocation table size"
2594 depends on RELOCATABLE
2595 range 0x0 0x01000000
2596 default "0x00100000"
2598 A table of relocation data will be appended to the kernel binary
2599 and parsed at boot to fix up the relocated kernel.
2601 This option allows the amount of space reserved for the table to be
2602 adjusted, although the default of 1Mb should be ok in most cases.
2604 The build will fail and a valid size suggested if this is too small.
2606 If unsure, leave at the default value.
2608 config RANDOMIZE_BASE
2609 bool "Randomize the address of the kernel image"
2610 depends on RELOCATABLE
2612 Randomizes the physical and virtual address at which the
2613 kernel image is loaded, as a security feature that
2614 deters exploit attempts relying on knowledge of the location
2615 of kernel internals.
2617 Entropy is generated using any coprocessor 0 registers available.
2619 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2623 config RANDOMIZE_BASE_MAX_OFFSET
2624 hex "Maximum kASLR offset" if EXPERT
2625 depends on RANDOMIZE_BASE
2626 range 0x0 0x40000000 if EVA || 64BIT
2627 range 0x0 0x08000000
2628 default "0x01000000"
2630 When kASLR is active, this provides the maximum offset that will
2631 be applied to the kernel image. It should be set according to the
2632 amount of physical RAM available in the target system minus
2633 PHYSICAL_START and must be a power of 2.
2635 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2636 EVA or 64-bit. The default is 16Mb.
2641 depends on NEED_MULTIPLE_NODES
2643 config HW_PERF_EVENTS
2644 bool "Enable hardware performance counter support for perf events"
2645 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2648 Enable hardware performance counter support for perf events. If
2649 disabled, perf events will use software events only.
2654 bool "Multi-Processing support"
2655 depends on SYS_SUPPORTS_SMP
2657 This enables support for systems with more than one CPU. If you have
2658 a system with only one CPU, say N. If you have a system with more
2659 than one CPU, say Y.
2661 If you say N here, the kernel will run on uni- and multiprocessor
2662 machines, but will use only one CPU of a multiprocessor machine. If
2663 you say Y here, the kernel will run on many, but not all,
2664 uniprocessor machines. On a uniprocessor machine, the kernel
2665 will run faster if you say N here.
2667 People using multiprocessor machines who say Y here should also say
2668 Y to "Enhanced Real Time Clock Support", below.
2670 See also the SMP-HOWTO available at
2671 <http://www.tldp.org/docs.html#howto>.
2673 If you don't know what to do here, say N.
2676 bool "Support for hot-pluggable CPUs"
2677 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2679 Say Y here to allow turning CPUs off and on. CPUs can be
2680 controlled through /sys/devices/system/cpu.
2681 (Note: power management support will enable this option
2682 automatically on SMP systems. )
2683 Say N if you want to disable CPU hotplug.
2688 config SYS_SUPPORTS_MIPS_CMP
2691 config SYS_SUPPORTS_MIPS_CPS
2694 config SYS_SUPPORTS_SMP
2697 config NR_CPUS_DEFAULT_4
2700 config NR_CPUS_DEFAULT_8
2703 config NR_CPUS_DEFAULT_16
2706 config NR_CPUS_DEFAULT_32
2709 config NR_CPUS_DEFAULT_64
2713 int "Maximum number of CPUs (2-256)"
2716 default "4" if NR_CPUS_DEFAULT_4
2717 default "8" if NR_CPUS_DEFAULT_8
2718 default "16" if NR_CPUS_DEFAULT_16
2719 default "32" if NR_CPUS_DEFAULT_32
2720 default "64" if NR_CPUS_DEFAULT_64
2722 This allows you to specify the maximum number of CPUs which this
2723 kernel will support. The maximum supported value is 32 for 32-bit
2724 kernel and 64 for 64-bit kernels; the minimum value which makes
2725 sense is 1 for Qemu (useful only for kernel debugging purposes)
2726 and 2 for all others.
2728 This is purely to save memory - each supported CPU adds
2729 approximately eight kilobytes to the kernel image. For best
2730 performance should round up your number of processors to the next
2733 config MIPS_PERF_SHARED_TC_COUNTERS
2737 # Timer Interrupt Frequency Configuration
2741 prompt "Timer frequency"
2744 Allows the configuration of the timer frequency.
2747 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2750 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2753 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2756 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2759 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2762 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2765 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2768 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2772 config SYS_SUPPORTS_24HZ
2775 config SYS_SUPPORTS_48HZ
2778 config SYS_SUPPORTS_100HZ
2781 config SYS_SUPPORTS_128HZ
2784 config SYS_SUPPORTS_250HZ
2787 config SYS_SUPPORTS_256HZ
2790 config SYS_SUPPORTS_1000HZ
2793 config SYS_SUPPORTS_1024HZ
2796 config SYS_SUPPORTS_ARBIT_HZ
2798 default y if !SYS_SUPPORTS_24HZ && \
2799 !SYS_SUPPORTS_48HZ && \
2800 !SYS_SUPPORTS_100HZ && \
2801 !SYS_SUPPORTS_128HZ && \
2802 !SYS_SUPPORTS_250HZ && \
2803 !SYS_SUPPORTS_256HZ && \
2804 !SYS_SUPPORTS_1000HZ && \
2805 !SYS_SUPPORTS_1024HZ
2811 default 100 if HZ_100
2812 default 128 if HZ_128
2813 default 250 if HZ_250
2814 default 256 if HZ_256
2815 default 1000 if HZ_1000
2816 default 1024 if HZ_1024
2819 def_bool HIGH_RES_TIMERS
2821 source "kernel/Kconfig.preempt"
2824 bool "Kexec system call"
2827 kexec is a system call that implements the ability to shutdown your
2828 current kernel, and to start another kernel. It is like a reboot
2829 but it is independent of the system firmware. And like a reboot
2830 you can start any kernel with it, not just Linux.
2832 The name comes from the similarity to the exec system call.
2834 It is an ongoing process to be certain the hardware in a machine
2835 is properly shutdown, so do not be surprised if this code does not
2836 initially work for you. As of this writing the exact hardware
2837 interface is strongly in flux, so no good recommendation can be
2841 bool "Kernel crash dumps"
2843 Generate crash dump after being started by kexec.
2844 This should be normally only set in special crash dump kernels
2845 which are loaded in the main kernel with kexec-tools into
2846 a specially reserved region and then later executed after
2847 a crash by kdump/kexec. The crash dump kernel must be compiled
2848 to a memory address not used by the main kernel or firmware using
2851 config PHYSICAL_START
2852 hex "Physical address where the kernel is loaded"
2853 default "0xffffffff84000000" if 64BIT
2854 default "0x84000000" if 32BIT
2855 depends on CRASH_DUMP
2857 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2858 If you plan to use kernel for capturing the crash dump change
2859 this value to start of the reserved region (the "X" value as
2860 specified in the "crashkernel=YM@XM" command line boot parameter
2861 passed to the panic-ed kernel).
2864 bool "Enable seccomp to safely compute untrusted bytecode"
2868 This kernel feature is useful for number crunching applications
2869 that may need to compute untrusted bytecode during their
2870 execution. By using pipes or other transports made available to
2871 the process as file descriptors supporting the read/write
2872 syscalls, it's possible to isolate those applications in
2873 their own address space using seccomp. Once seccomp is
2874 enabled via /proc/<pid>/seccomp, it cannot be disabled
2875 and the task is only allowed to execute a few safe syscalls
2876 defined by each seccomp mode.
2878 If unsure, say Y. Only embedded should say N here.
2880 config MIPS_O32_FP64_SUPPORT
2881 bool "Support for O32 binaries using 64-bit FP"
2882 depends on 32BIT || MIPS32_O32
2884 When this is enabled, the kernel will support use of 64-bit floating
2885 point registers with binaries using the O32 ABI along with the
2886 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2887 32-bit MIPS systems this support is at the cost of increasing the
2888 size and complexity of the compiled FPU emulator. Thus if you are
2889 running a MIPS32 system and know that none of your userland binaries
2890 will require 64-bit floating point, you may wish to reduce the size
2891 of your kernel & potentially improve FP emulation performance by
2894 Although binutils currently supports use of this flag the details
2895 concerning its effect upon the O32 ABI in userland are still being
2896 worked on. In order to avoid userland becoming dependant upon current
2897 behaviour before the details have been finalised, this option should
2898 be considered experimental and only enabled by those working upon
2906 select OF_EARLY_FLATTREE
2913 prompt "Kernel appended dtb support" if USE_OF
2914 default MIPS_NO_APPENDED_DTB
2916 config MIPS_NO_APPENDED_DTB
2919 Do not enable appended dtb support.
2921 config MIPS_ELF_APPENDED_DTB
2924 With this option, the boot code will look for a device tree binary
2925 DTB) included in the vmlinux ELF section .appended_dtb. By default
2926 it is empty and the DTB can be appended using binutils command
2929 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2931 This is meant as a backward compatiblity convenience for those
2932 systems with a bootloader that can't be upgraded to accommodate
2933 the documented boot protocol using a device tree.
2935 config MIPS_RAW_APPENDED_DTB
2936 bool "vmlinux.bin or vmlinuz.bin"
2938 With this option, the boot code will look for a device tree binary
2939 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2940 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2942 This is meant as a backward compatibility convenience for those
2943 systems with a bootloader that can't be upgraded to accommodate
2944 the documented boot protocol using a device tree.
2946 Beware that there is very little in terms of protection against
2947 this option being confused by leftover garbage in memory that might
2948 look like a DTB header after a reboot if no actual DTB is appended
2949 to vmlinux.bin. Do not leave this option active in a production kernel
2950 if you don't intend to always append a DTB.
2954 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2955 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2958 default MIPS_CMDLINE_FROM_BOOTLOADER
2960 config MIPS_CMDLINE_FROM_DTB
2962 bool "Dtb kernel arguments if available"
2964 config MIPS_CMDLINE_DTB_EXTEND
2966 bool "Extend dtb kernel arguments with bootloader arguments"
2968 config MIPS_CMDLINE_FROM_BOOTLOADER
2969 bool "Bootloader kernel arguments if available"
2971 config MIPS_CMDLINE_BUILTIN_EXTEND
2972 depends on CMDLINE_BOOL
2973 bool "Extend builtin kernel arguments with bootloader arguments"
2978 config LOCKDEP_SUPPORT
2982 config STACKTRACE_SUPPORT
2986 config HAVE_LATENCYTOP_SUPPORT
2990 config PGTABLE_LEVELS
2992 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
2993 default 3 if 64BIT && (!PAGE_SIZE_64KB || MIPS_VA_BITS_48)
2996 source "init/Kconfig"
2998 source "kernel/Kconfig.freezer"
3000 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3008 bool "Support for PCI controller"
3009 depends on HW_HAS_PCI
3012 Find out whether you have a PCI motherboard. PCI is the name of a
3013 bus system, i.e. the way the CPU talks to the other stuff inside
3014 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
3018 bool "Support for HT-linked PCI"
3020 depends on CPU_LOONGSON3
3024 Loongson family machines use Hyper-Transport bus for inter-core
3025 connection and device connection. The PCI bus is a subordinate
3026 linked at HT. Choose Y for Loongson-3 based machines.
3031 config PCI_DOMAINS_GENERIC
3034 config PCI_DRIVERS_GENERIC
3035 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3038 config PCI_DRIVERS_LEGACY
3039 def_bool !PCI_DRIVERS_GENERIC
3040 select NO_GENERIC_PCI_IOPORT_MAP
3042 source "drivers/pci/Kconfig"
3045 # ISA support is now enabled via select. Too many systems still have the one
3046 # or other ISA chip on the board that users don't know about so don't expect
3047 # users to choose the right thing ...
3054 depends on HW_HAS_EISA
3056 select GENERIC_ISA_DMA
3058 The Extended Industry Standard Architecture (EISA) bus was
3059 developed as an open alternative to the IBM MicroChannel bus.
3061 The EISA bus provided some of the features of the IBM MicroChannel
3062 bus while maintaining backward compatibility with cards made for
3063 the older ISA bus. The EISA bus saw limited use between 1988 and
3064 1995 when it was made obsolete by the PCI bus.
3066 Say Y here if you are building a kernel for an EISA-based machine.
3070 source "drivers/eisa/Kconfig"
3073 bool "TURBOchannel support"
3074 depends on MACH_DECSTATION
3076 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3077 processors. TURBOchannel programming specifications are available
3079 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3081 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3082 Linux driver support status is documented at:
3083 <http://www.linux-mips.org/wiki/DECstation>
3089 config ARCH_MMAP_RND_BITS_MIN
3093 config ARCH_MMAP_RND_BITS_MAX
3097 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3100 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3107 select MIPS_EXTERNAL_TIMER
3115 source "drivers/pcmcia/Kconfig"
3118 tristate "RapidIO support"
3122 If you say Y here, the kernel will include drivers and
3123 infrastructure code to support RapidIO interconnect devices.
3125 source "drivers/rapidio/Kconfig"
3129 menu "Executable file formats"
3131 source "fs/Kconfig.binfmt"
3136 config MIPS32_COMPAT
3142 config SYSVIPC_COMPAT
3146 bool "Kernel support for o32 binaries"
3148 select ARCH_WANT_OLD_COMPAT_IPC
3150 select MIPS32_COMPAT
3151 select SYSVIPC_COMPAT if SYSVIPC
3153 Select this option if you want to run o32 binaries. These are pure
3154 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3155 existing binaries are in this format.
3160 bool "Kernel support for n32 binaries"
3162 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3164 select MIPS32_COMPAT
3165 select SYSVIPC_COMPAT if SYSVIPC
3167 Select this option if you want to run n32 binaries. These are
3168 64-bit binaries using 32-bit quantities for addressing and certain
3169 data that would normally be 64-bit. They are used in special
3176 default y if MIPS32_O32 || MIPS32_N32
3181 menu "Power management options"
3183 config ARCH_HIBERNATION_POSSIBLE
3185 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3187 config ARCH_SUSPEND_POSSIBLE
3189 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3191 source "kernel/power/Kconfig"
3195 config MIPS_EXTERNAL_TIMER
3198 menu "CPU Power Management"
3200 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3201 source "drivers/cpufreq/Kconfig"
3204 source "drivers/cpuidle/Kconfig"
3208 source "net/Kconfig"
3210 source "drivers/Kconfig"
3212 source "drivers/firmware/Kconfig"
3216 source "arch/mips/Kconfig.debug"
3218 source "security/Kconfig"
3220 source "crypto/Kconfig"
3222 source "lib/Kconfig"
3224 source "arch/mips/kvm/Kconfig"