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 if 64BIT || !SMP
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
236 select HARDIRQS_SW_RESEND
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
262 select BCM47XX_SSB if !BCM47XX_BCMA
264 Support for BCM47XX based boards
267 bool "Broadcom BCM63XX based boards"
272 select DMA_NONCOHERENT
274 select SYS_SUPPORTS_32BIT_KERNEL
275 select SYS_SUPPORTS_BIG_ENDIAN
276 select SYS_HAS_EARLY_PRINTK
280 select MIPS_L1_CACHE_SHIFT_4
283 Support for BCM63XX based boards
290 select DMA_NONCOHERENT
296 select PCI_GT64XXX_PCI0
298 select SYS_HAS_CPU_NEVADA
299 select SYS_HAS_EARLY_PRINTK
300 select SYS_SUPPORTS_32BIT_KERNEL
301 select SYS_SUPPORTS_64BIT_KERNEL
302 select SYS_SUPPORTS_LITTLE_ENDIAN
303 select USE_GENERIC_EARLY_PRINTK_8250
305 config MACH_DECSTATION
309 select CEVT_R4K if CPU_R4X00
311 select CSRC_R4K if CPU_R4X00
312 select CPU_DADDI_WORKAROUNDS if 64BIT
313 select CPU_R4000_WORKAROUNDS if 64BIT
314 select CPU_R4400_WORKAROUNDS if 64BIT
315 select DMA_NONCOHERENT
318 select SYS_HAS_CPU_R3000
319 select SYS_HAS_CPU_R4X00
320 select SYS_SUPPORTS_32BIT_KERNEL
321 select SYS_SUPPORTS_64BIT_KERNEL
322 select SYS_SUPPORTS_LITTLE_ENDIAN
323 select SYS_SUPPORTS_128HZ
324 select SYS_SUPPORTS_256HZ
325 select SYS_SUPPORTS_1024HZ
326 select MIPS_L1_CACHE_SHIFT_4
328 This enables support for DEC's MIPS based workstations. For details
329 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
330 DECstation porting pages on <http://decstation.unix-ag.org/>.
332 If you have one of the following DECstation Models you definitely
333 want to choose R4xx0 for the CPU Type:
340 otherwise choose R3000.
343 bool "Jazz family of machines"
346 select ARCH_MAY_HAVE_PC_FDC
349 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
350 select GENERIC_ISA_DMA
351 select HAVE_PCSPKR_PLATFORM
356 select SYS_HAS_CPU_R4X00
357 select SYS_SUPPORTS_32BIT_KERNEL
358 select SYS_SUPPORTS_64BIT_KERNEL
359 select SYS_SUPPORTS_100HZ
361 This a family of machines based on the MIPS R4030 chipset which was
362 used by several vendors to build RISC/os and Windows NT workstations.
363 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
364 Olivetti M700-10 workstations.
367 bool "Ingenic SoC based machines"
368 select SYS_SUPPORTS_32BIT_KERNEL
369 select SYS_SUPPORTS_LITTLE_ENDIAN
370 select SYS_SUPPORTS_ZBOOT_UART16550
371 select DMA_NONCOHERENT
376 select GENERIC_IRQ_CHIP
382 bool "Lantiq based platforms"
383 select DMA_NONCOHERENT
387 select SYS_HAS_CPU_MIPS32_R1
388 select SYS_HAS_CPU_MIPS32_R2
389 select SYS_SUPPORTS_BIG_ENDIAN
390 select SYS_SUPPORTS_32BIT_KERNEL
391 select SYS_SUPPORTS_MIPS16
392 select SYS_SUPPORTS_MULTITHREADING
393 select SYS_SUPPORTS_VPE_LOADER
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 "MIPS Malta board"
477 select ARCH_MAY_HAVE_PC_FDC
483 select CLKSRC_MIPS_GIC
485 select DMA_MAYBE_COHERENT
486 select GENERIC_ISA_DMA
487 select HAVE_PCSPKR_PLATFORM
494 select MIPS_CPU_SCACHE
495 select MIPS_L1_CACHE_SHIFT_6
496 select PCI_GT64XXX_PCI0
500 select SYS_HAS_CPU_MIPS32_R1
501 select SYS_HAS_CPU_MIPS32_R2
502 select SYS_HAS_CPU_MIPS32_R3_5
503 select SYS_HAS_CPU_MIPS32_R5
504 select SYS_HAS_CPU_MIPS32_R6
505 select SYS_HAS_CPU_MIPS64_R1
506 select SYS_HAS_CPU_MIPS64_R2
507 select SYS_HAS_CPU_MIPS64_R6
508 select SYS_HAS_CPU_NEVADA
509 select SYS_HAS_CPU_RM7000
510 select SYS_SUPPORTS_32BIT_KERNEL
511 select SYS_SUPPORTS_64BIT_KERNEL
512 select SYS_SUPPORTS_BIG_ENDIAN
513 select SYS_SUPPORTS_HIGHMEM
514 select SYS_SUPPORTS_LITTLE_ENDIAN
515 select SYS_SUPPORTS_MICROMIPS
516 select SYS_SUPPORTS_MIPS_CMP
517 select SYS_SUPPORTS_MIPS_CPS
518 select SYS_SUPPORTS_MIPS16
519 select SYS_SUPPORTS_MULTITHREADING
520 select SYS_SUPPORTS_SMARTMIPS
521 select SYS_SUPPORTS_VPE_LOADER
522 select SYS_SUPPORTS_ZBOOT
523 select SYS_SUPPORTS_RELOCATABLE
526 select ZONE_DMA32 if 64BIT
530 This enables support for the MIPS Technologies Malta evaluation
534 bool "Microchip PIC32 Family"
536 This enables support for the Microchip PIC32 family of platforms.
538 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
542 bool "NEC EMMA2RH Mark-eins board"
546 This enables support for the NEC Electronics Mark-eins boards.
549 bool "NEC VR4100 series based machines"
552 select SYS_HAS_CPU_VR41XX
553 select SYS_SUPPORTS_MIPS16
557 bool "NXP STB220 board"
560 Support for NXP Semiconductors STB220 Development Board.
567 Support for NXP Semiconductors STB225 Development Board.
570 bool "PMC-Sierra MSP chipsets"
573 select DMA_NONCOHERENT
575 select NO_EXCEPT_FILL
577 select SYS_HAS_CPU_MIPS32_R1
578 select SYS_HAS_CPU_MIPS32_R2
579 select SYS_SUPPORTS_32BIT_KERNEL
580 select SYS_SUPPORTS_BIG_ENDIAN
581 select SYS_SUPPORTS_MIPS16
584 select SERIAL_8250_CONSOLE
585 select USB_EHCI_BIG_ENDIAN_MMIO
586 select USB_EHCI_BIG_ENDIAN_DESC
588 This adds support for the PMC-Sierra family of Multi-Service
589 Processor System-On-A-Chips. These parts include a number
590 of integrated peripherals, interfaces and DSPs in addition to
591 a variety of MIPS cores.
594 bool "Ralink based machines"
598 select DMA_NONCOHERENT
601 select SYS_HAS_CPU_MIPS32_R1
602 select SYS_HAS_CPU_MIPS32_R2
603 select SYS_SUPPORTS_32BIT_KERNEL
604 select SYS_SUPPORTS_LITTLE_ENDIAN
605 select SYS_SUPPORTS_MIPS16
606 select SYS_HAS_EARLY_PRINTK
608 select ARCH_HAS_RESET_CONTROLLER
609 select RESET_CONTROLLER
612 bool "SGI IP22 (Indy/Indigo2)"
618 select DEFAULT_SGI_PARTITION
619 select DMA_NONCOHERENT
623 select IP22_CPU_SCACHE
625 select GENERIC_ISA_DMA_SUPPORT_BROKEN
627 select SGI_HAS_INDYDOG
633 select SYS_HAS_CPU_R4X00
634 select SYS_HAS_CPU_R5000
636 # Disable EARLY_PRINTK for now since it leads to overwritten prom
637 # memory during early boot on some machines.
639 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
640 # for a more details discussion
642 # select SYS_HAS_EARLY_PRINTK
643 select SYS_SUPPORTS_32BIT_KERNEL
644 select SYS_SUPPORTS_64BIT_KERNEL
645 select SYS_SUPPORTS_BIG_ENDIAN
646 select MIPS_L1_CACHE_SHIFT_7
648 This are the SGI Indy, Challenge S and Indigo2, as well as certain
649 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
650 that runs on these, say Y here.
653 bool "SGI IP27 (Origin200/2000)"
657 select DEFAULT_SGI_PARTITION
659 select SYS_HAS_EARLY_PRINTK
661 select NR_CPUS_DEFAULT_64
662 select SYS_HAS_CPU_R10000
663 select SYS_SUPPORTS_64BIT_KERNEL
664 select SYS_SUPPORTS_BIG_ENDIAN
665 select SYS_SUPPORTS_NUMA
666 select SYS_SUPPORTS_SMP
667 select MIPS_L1_CACHE_SHIFT_7
669 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
670 workstations. To compile a Linux kernel that runs on these, say Y
674 bool "SGI IP28 (Indigo2 R10k)"
680 select DEFAULT_SGI_PARTITION
681 select DMA_NONCOHERENT
682 select GENERIC_ISA_DMA_SUPPORT_BROKEN
688 select SGI_HAS_INDYDOG
694 select SYS_HAS_CPU_R10000
696 # Disable EARLY_PRINTK for now since it leads to overwritten prom
697 # memory during early boot on some machines.
699 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
700 # for a more details discussion
702 # select SYS_HAS_EARLY_PRINTK
703 select SYS_SUPPORTS_64BIT_KERNEL
704 select SYS_SUPPORTS_BIG_ENDIAN
705 select MIPS_L1_CACHE_SHIFT_7
707 This is the SGI Indigo2 with R10000 processor. To compile a Linux
708 kernel that runs on these, say Y here.
717 select DMA_NONCOHERENT
720 select R5000_CPU_SCACHE
721 select RM7000_CPU_SCACHE
722 select SYS_HAS_CPU_R5000
723 select SYS_HAS_CPU_R10000 if BROKEN
724 select SYS_HAS_CPU_RM7000
725 select SYS_HAS_CPU_NEVADA
726 select SYS_SUPPORTS_64BIT_KERNEL
727 select SYS_SUPPORTS_BIG_ENDIAN
729 If you want this kernel to run on SGI O2 workstation, say Y here.
732 bool "Sibyte BCM91120C-CRhine"
735 select SIBYTE_BCM1120
737 select SYS_HAS_CPU_SB1
738 select SYS_SUPPORTS_BIG_ENDIAN
739 select SYS_SUPPORTS_LITTLE_ENDIAN
742 bool "Sibyte BCM91120x-Carmel"
745 select SIBYTE_BCM1120
747 select SYS_HAS_CPU_SB1
748 select SYS_SUPPORTS_BIG_ENDIAN
749 select SYS_SUPPORTS_LITTLE_ENDIAN
752 bool "Sibyte BCM91125C-CRhone"
755 select SIBYTE_BCM1125
757 select SYS_HAS_CPU_SB1
758 select SYS_SUPPORTS_BIG_ENDIAN
759 select SYS_SUPPORTS_HIGHMEM
760 select SYS_SUPPORTS_LITTLE_ENDIAN
763 bool "Sibyte BCM91125E-Rhone"
766 select SIBYTE_BCM1125H
768 select SYS_HAS_CPU_SB1
769 select SYS_SUPPORTS_BIG_ENDIAN
770 select SYS_SUPPORTS_LITTLE_ENDIAN
773 bool "Sibyte BCM91250A-SWARM"
776 select HAVE_PATA_PLATFORM
779 select SYS_HAS_CPU_SB1
780 select SYS_SUPPORTS_BIG_ENDIAN
781 select SYS_SUPPORTS_HIGHMEM
782 select SYS_SUPPORTS_LITTLE_ENDIAN
783 select ZONE_DMA32 if 64BIT
785 config SIBYTE_LITTLESUR
786 bool "Sibyte BCM91250C2-LittleSur"
789 select HAVE_PATA_PLATFORM
792 select SYS_HAS_CPU_SB1
793 select SYS_SUPPORTS_BIG_ENDIAN
794 select SYS_SUPPORTS_HIGHMEM
795 select SYS_SUPPORTS_LITTLE_ENDIAN
797 config SIBYTE_SENTOSA
798 bool "Sibyte BCM91250E-Sentosa"
803 select SYS_HAS_CPU_SB1
804 select SYS_SUPPORTS_BIG_ENDIAN
805 select SYS_SUPPORTS_LITTLE_ENDIAN
808 bool "Sibyte BCM91480B-BigSur"
811 select NR_CPUS_DEFAULT_4
812 select SIBYTE_BCM1x80
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
821 bool "SNI RM200/300/400"
822 select FW_ARC if CPU_LITTLE_ENDIAN
823 select FW_ARC32 if CPU_LITTLE_ENDIAN
824 select FW_SNIPROM if CPU_BIG_ENDIAN
825 select ARCH_MAY_HAVE_PC_FDC
829 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
830 select DMA_NONCOHERENT
831 select GENERIC_ISA_DMA
832 select HAVE_PCSPKR_PLATFORM
839 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
840 select SYS_HAS_CPU_R4X00
841 select SYS_HAS_CPU_R5000
842 select SYS_HAS_CPU_R10000
843 select R5000_CPU_SCACHE
844 select SYS_HAS_EARLY_PRINTK
845 select SYS_SUPPORTS_32BIT_KERNEL
846 select SYS_SUPPORTS_64BIT_KERNEL
847 select SYS_SUPPORTS_BIG_ENDIAN
848 select SYS_SUPPORTS_HIGHMEM
849 select SYS_SUPPORTS_LITTLE_ENDIAN
851 The SNI RM200/300/400 are MIPS-based machines manufactured by
852 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
853 Technology and now in turn merged with Fujitsu. Say Y here to
854 support this machine type.
857 bool "Toshiba TX39 series based machines"
860 bool "Toshiba TX49 series based machines"
862 config MIKROTIK_RB532
863 bool "Mikrotik RB532 boards"
866 select DMA_NONCOHERENT
869 select SYS_HAS_CPU_MIPS32_R1
870 select SYS_SUPPORTS_32BIT_KERNEL
871 select SYS_SUPPORTS_LITTLE_ENDIAN
875 select MIPS_L1_CACHE_SHIFT_4
877 Support the Mikrotik(tm) RouterBoard 532 series,
878 based on the IDT RC32434 SoC.
880 config CAVIUM_OCTEON_SOC
881 bool "Cavium Networks Octeon SoC based boards"
883 select ARCH_PHYS_ADDR_T_64BIT
885 select SYS_SUPPORTS_64BIT_KERNEL
886 select SYS_SUPPORTS_BIG_ENDIAN
888 select EDAC_ATOMIC_SCRUB
889 select SYS_SUPPORTS_LITTLE_ENDIAN
890 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
891 select SYS_HAS_EARLY_PRINTK
892 select SYS_HAS_CPU_CAVIUM_OCTEON
899 select ARCH_SPARSEMEM_ENABLE
900 select SYS_SUPPORTS_SMP
901 select NR_CPUS_DEFAULT_64
902 select MIPS_NR_CPU_NR_MAP_1024
904 select MTD_COMPLEX_MAPPINGS
905 select SYS_SUPPORTS_RELOCATABLE
907 This option supports all of the Octeon reference boards from Cavium
908 Networks. It builds a kernel that dynamically determines the Octeon
909 CPU type and supports all known board reference implementations.
910 Some of the supported boards are:
917 Say Y here for most Octeon reference boards.
920 bool "Netlogic XLR/XLS based systems"
923 select SYS_HAS_CPU_XLR
924 select SYS_SUPPORTS_SMP
927 select SYS_SUPPORTS_32BIT_KERNEL
928 select SYS_SUPPORTS_64BIT_KERNEL
929 select ARCH_PHYS_ADDR_T_64BIT
930 select SYS_SUPPORTS_BIG_ENDIAN
931 select SYS_SUPPORTS_HIGHMEM
933 select NR_CPUS_DEFAULT_32
937 select ZONE_DMA32 if 64BIT
939 select SYS_HAS_EARLY_PRINTK
940 select SYS_SUPPORTS_ZBOOT
941 select SYS_SUPPORTS_ZBOOT_UART16550
943 Support for systems based on Netlogic XLR and XLS processors.
944 Say Y here if you have a XLR or XLS based board.
947 bool "Netlogic XLP based systems"
950 select SYS_HAS_CPU_XLP
951 select SYS_SUPPORTS_SMP
953 select SYS_SUPPORTS_32BIT_KERNEL
954 select SYS_SUPPORTS_64BIT_KERNEL
955 select ARCH_PHYS_ADDR_T_64BIT
957 select SYS_SUPPORTS_BIG_ENDIAN
958 select SYS_SUPPORTS_LITTLE_ENDIAN
959 select SYS_SUPPORTS_HIGHMEM
961 select NR_CPUS_DEFAULT_32
965 select ZONE_DMA32 if 64BIT
967 select SYS_HAS_EARLY_PRINTK
969 select SYS_SUPPORTS_ZBOOT
970 select SYS_SUPPORTS_ZBOOT_UART16550
972 This board is based on Netlogic XLP Processor.
973 Say Y here if you have a XLP based board.
976 bool "Para-Virtualized guest system"
980 select SYS_SUPPORTS_64BIT_KERNEL
981 select SYS_SUPPORTS_32BIT_KERNEL
982 select SYS_SUPPORTS_BIG_ENDIAN
983 select SYS_SUPPORTS_SMP
984 select NR_CPUS_DEFAULT_4
985 select SYS_HAS_EARLY_PRINTK
986 select SYS_HAS_CPU_MIPS32_R2
987 select SYS_HAS_CPU_MIPS64_R2
988 select SYS_HAS_CPU_CAVIUM_OCTEON
992 This option supports guest running under ????
996 source "arch/mips/alchemy/Kconfig"
997 source "arch/mips/ath25/Kconfig"
998 source "arch/mips/ath79/Kconfig"
999 source "arch/mips/bcm47xx/Kconfig"
1000 source "arch/mips/bcm63xx/Kconfig"
1001 source "arch/mips/bmips/Kconfig"
1002 source "arch/mips/generic/Kconfig"
1003 source "arch/mips/jazz/Kconfig"
1004 source "arch/mips/jz4740/Kconfig"
1005 source "arch/mips/lantiq/Kconfig"
1006 source "arch/mips/lasat/Kconfig"
1007 source "arch/mips/pic32/Kconfig"
1008 source "arch/mips/pistachio/Kconfig"
1009 source "arch/mips/pmcs-msp71xx/Kconfig"
1010 source "arch/mips/ralink/Kconfig"
1011 source "arch/mips/sgi-ip27/Kconfig"
1012 source "arch/mips/sibyte/Kconfig"
1013 source "arch/mips/txx9/Kconfig"
1014 source "arch/mips/vr41xx/Kconfig"
1015 source "arch/mips/cavium-octeon/Kconfig"
1016 source "arch/mips/loongson32/Kconfig"
1017 source "arch/mips/loongson64/Kconfig"
1018 source "arch/mips/netlogic/Kconfig"
1019 source "arch/mips/paravirt/Kconfig"
1023 config RWSEM_GENERIC_SPINLOCK
1027 config RWSEM_XCHGADD_ALGORITHM
1030 config GENERIC_HWEIGHT
1034 config GENERIC_CALIBRATE_DELAY
1038 config SCHED_OMIT_FRAME_POINTER
1043 # Select some configuration options automatically based on user selections.
1048 config ARCH_MAY_HAVE_PC_FDC
1084 config MIPS_CLOCK_VSYSCALL
1085 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1094 config ARCH_DMA_ADDR_T_64BIT
1095 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1097 config ARCH_SUPPORTS_UPROBES
1100 config DMA_MAYBE_COHERENT
1101 select DMA_NONCOHERENT
1104 config DMA_PERDEV_COHERENT
1106 select DMA_MAYBE_COHERENT
1111 config DMA_NONCOHERENT
1113 select NEED_DMA_MAP_STATE
1115 config NEED_DMA_MAP_STATE
1118 config SYS_HAS_EARLY_PRINTK
1121 config SYS_SUPPORTS_HOTPLUG_CPU
1124 config MIPS_BONITO64
1139 config NO_IOPORT_MAP
1145 config GENERIC_ISA_DMA
1147 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1150 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1152 select GENERIC_ISA_DMA
1157 config HOLES_IN_ZONE
1160 config SYS_SUPPORTS_RELOCATABLE
1163 Selected if the platform supports relocating the kernel.
1164 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1165 to allow access to command line and entropy sources.
1167 config MIPS_CBPF_JIT
1169 depends on BPF_JIT && HAVE_CBPF_JIT
1171 config MIPS_EBPF_JIT
1173 depends on BPF_JIT && HAVE_EBPF_JIT
1177 # Endianness selection. Sufficiently obscure so many users don't know what to
1178 # answer,so we try hard to limit the available choices. Also the use of a
1179 # choice statement should be more obvious to the user.
1182 prompt "Endianness selection"
1184 Some MIPS machines can be configured for either little or big endian
1185 byte order. These modes require different kernels and a different
1186 Linux distribution. In general there is one preferred byteorder for a
1187 particular system but some systems are just as commonly used in the
1188 one or the other endianness.
1190 config CPU_BIG_ENDIAN
1192 depends on SYS_SUPPORTS_BIG_ENDIAN
1194 config CPU_LITTLE_ENDIAN
1195 bool "Little endian"
1196 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1203 config SYS_SUPPORTS_APM_EMULATION
1206 config SYS_SUPPORTS_BIG_ENDIAN
1209 config SYS_SUPPORTS_LITTLE_ENDIAN
1212 config SYS_SUPPORTS_HUGETLBFS
1214 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1217 config MIPS_HUGE_TLB_SUPPORT
1218 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1235 config PCI_GT64XXX_PCI0
1238 config NO_EXCEPT_FILL
1245 select DMA_NONCOHERENT
1247 select SWAP_IO_SPACE
1248 select SYS_HAS_CPU_R5500
1249 select SYS_SUPPORTS_32BIT_KERNEL
1250 select SYS_SUPPORTS_64BIT_KERNEL
1251 select SYS_SUPPORTS_BIG_ENDIAN
1258 select DMA_NONCOHERENT
1259 select SYS_HAS_CPU_MIPS32_R2
1260 select SYS_SUPPORTS_32BIT_KERNEL
1261 select SYS_SUPPORTS_LITTLE_ENDIAN
1262 select SYS_SUPPORTS_BIG_ENDIAN
1263 select SYS_SUPPORTS_MIPS16
1264 select CPU_MIPSR2_IRQ_VI
1273 config SWAP_IO_SPACE
1276 config SGI_HAS_INDYDOG
1288 config SGI_HAS_ZILOG
1291 config SGI_HAS_I8042
1294 config DEFAULT_SGI_PARTITION
1306 config MIPS_L1_CACHE_SHIFT_4
1309 config MIPS_L1_CACHE_SHIFT_5
1312 config MIPS_L1_CACHE_SHIFT_6
1315 config MIPS_L1_CACHE_SHIFT_7
1318 config MIPS_L1_CACHE_SHIFT
1320 default "7" if MIPS_L1_CACHE_SHIFT_7
1321 default "6" if MIPS_L1_CACHE_SHIFT_6
1322 default "5" if MIPS_L1_CACHE_SHIFT_5
1323 default "4" if MIPS_L1_CACHE_SHIFT_4
1326 config HAVE_STD_PC_SERIAL_PORT
1330 bool "ARC console support"
1331 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1335 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1340 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1349 menu "CPU selection"
1355 config CPU_LOONGSON3
1356 bool "Loongson 3 CPU"
1357 depends on SYS_HAS_CPU_LOONGSON3
1358 select CPU_SUPPORTS_64BIT_KERNEL
1359 select CPU_SUPPORTS_HIGHMEM
1360 select CPU_SUPPORTS_HUGEPAGES
1361 select WEAK_ORDERING
1362 select WEAK_REORDERING_BEYOND_LLSC
1363 select MIPS_PGD_C0_CONTEXT
1364 select MIPS_L1_CACHE_SHIFT_6
1367 The Loongson 3 processor implements the MIPS64R2 instruction
1368 set with many extensions.
1370 config LOONGSON3_ENHANCEMENT
1371 bool "New Loongson 3 CPU Enhancements"
1374 select CPU_HAS_PREFETCH
1375 depends on CPU_LOONGSON3
1377 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1378 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1379 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1380 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1381 Fast TLB refill support, etc.
1383 This option enable those enhancements which are not probed at run
1384 time. If you want a generic kernel to run on all Loongson 3 machines,
1385 please say 'N' here. If you want a high-performance kernel to run on
1386 new Loongson 3 machines only, please say 'Y' here.
1388 config CPU_LOONGSON2E
1390 depends on SYS_HAS_CPU_LOONGSON2E
1391 select CPU_LOONGSON2
1393 The Loongson 2E processor implements the MIPS III instruction set
1394 with many extensions.
1396 It has an internal FPGA northbridge, which is compatible to
1399 config CPU_LOONGSON2F
1401 depends on SYS_HAS_CPU_LOONGSON2F
1402 select CPU_LOONGSON2
1405 The Loongson 2F processor implements the MIPS III instruction set
1406 with many extensions.
1408 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1409 have a similar programming interface with FPGA northbridge used in
1412 config CPU_LOONGSON1B
1414 depends on SYS_HAS_CPU_LOONGSON1B
1415 select CPU_LOONGSON1
1416 select LEDS_GPIO_REGISTER
1418 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1419 release 2 instruction set.
1421 config CPU_LOONGSON1C
1423 depends on SYS_HAS_CPU_LOONGSON1C
1424 select CPU_LOONGSON1
1425 select LEDS_GPIO_REGISTER
1427 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1428 release 2 instruction set.
1430 config CPU_MIPS32_R1
1431 bool "MIPS32 Release 1"
1432 depends on SYS_HAS_CPU_MIPS32_R1
1433 select CPU_HAS_PREFETCH
1434 select CPU_SUPPORTS_32BIT_KERNEL
1435 select CPU_SUPPORTS_HIGHMEM
1437 Choose this option to build a kernel for release 1 or later of the
1438 MIPS32 architecture. Most modern embedded systems with a 32-bit
1439 MIPS processor are based on a MIPS32 processor. If you know the
1440 specific type of processor in your system, choose those that one
1441 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1442 Release 2 of the MIPS32 architecture is available since several
1443 years so chances are you even have a MIPS32 Release 2 processor
1444 in which case you should choose CPU_MIPS32_R2 instead for better
1447 config CPU_MIPS32_R2
1448 bool "MIPS32 Release 2"
1449 depends on SYS_HAS_CPU_MIPS32_R2
1450 select CPU_HAS_PREFETCH
1451 select CPU_SUPPORTS_32BIT_KERNEL
1452 select CPU_SUPPORTS_HIGHMEM
1453 select CPU_SUPPORTS_MSA
1456 Choose this option to build a kernel for release 2 or later of the
1457 MIPS32 architecture. Most modern embedded systems with a 32-bit
1458 MIPS processor are based on a MIPS32 processor. If you know the
1459 specific type of processor in your system, choose those that one
1460 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1462 config CPU_MIPS32_R6
1463 bool "MIPS32 Release 6"
1464 depends on SYS_HAS_CPU_MIPS32_R6
1465 select CPU_HAS_PREFETCH
1466 select CPU_SUPPORTS_32BIT_KERNEL
1467 select CPU_SUPPORTS_HIGHMEM
1468 select CPU_SUPPORTS_MSA
1471 select MIPS_O32_FP64_SUPPORT
1473 Choose this option to build a kernel for release 6 or later of the
1474 MIPS32 architecture. New MIPS processors, starting with the Warrior
1475 family, are based on a MIPS32r6 processor. If you own an older
1476 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1478 config CPU_MIPS64_R1
1479 bool "MIPS64 Release 1"
1480 depends on SYS_HAS_CPU_MIPS64_R1
1481 select CPU_HAS_PREFETCH
1482 select CPU_SUPPORTS_32BIT_KERNEL
1483 select CPU_SUPPORTS_64BIT_KERNEL
1484 select CPU_SUPPORTS_HIGHMEM
1485 select CPU_SUPPORTS_HUGEPAGES
1487 Choose this option to build a kernel for release 1 or later of the
1488 MIPS64 architecture. Many modern embedded systems with a 64-bit
1489 MIPS processor are based on a MIPS64 processor. If you know the
1490 specific type of processor in your system, choose those that one
1491 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1492 Release 2 of the MIPS64 architecture is available since several
1493 years so chances are you even have a MIPS64 Release 2 processor
1494 in which case you should choose CPU_MIPS64_R2 instead for better
1497 config CPU_MIPS64_R2
1498 bool "MIPS64 Release 2"
1499 depends on SYS_HAS_CPU_MIPS64_R2
1500 select CPU_HAS_PREFETCH
1501 select CPU_SUPPORTS_32BIT_KERNEL
1502 select CPU_SUPPORTS_64BIT_KERNEL
1503 select CPU_SUPPORTS_HIGHMEM
1504 select CPU_SUPPORTS_HUGEPAGES
1505 select CPU_SUPPORTS_MSA
1508 Choose this option to build a kernel for release 2 or later of the
1509 MIPS64 architecture. Many modern embedded systems with a 64-bit
1510 MIPS processor are based on a MIPS64 processor. If you know the
1511 specific type of processor in your system, choose those that one
1512 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1514 config CPU_MIPS64_R6
1515 bool "MIPS64 Release 6"
1516 depends on SYS_HAS_CPU_MIPS64_R6
1517 select CPU_HAS_PREFETCH
1518 select CPU_SUPPORTS_32BIT_KERNEL
1519 select CPU_SUPPORTS_64BIT_KERNEL
1520 select CPU_SUPPORTS_HIGHMEM
1521 select CPU_SUPPORTS_MSA
1523 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1526 Choose this option to build a kernel for release 6 or later of the
1527 MIPS64 architecture. New MIPS processors, starting with the Warrior
1528 family, are based on a MIPS64r6 processor. If you own an older
1529 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1533 depends on SYS_HAS_CPU_R3000
1535 select CPU_SUPPORTS_32BIT_KERNEL
1536 select CPU_SUPPORTS_HIGHMEM
1538 Please make sure to pick the right CPU type. Linux/MIPS is not
1539 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1540 *not* work on R4000 machines and vice versa. However, since most
1541 of the supported machines have an R4000 (or similar) CPU, R4x00
1542 might be a safe bet. If the resulting kernel does not work,
1543 try to recompile with R3000.
1547 depends on SYS_HAS_CPU_TX39XX
1548 select CPU_SUPPORTS_32BIT_KERNEL
1552 depends on SYS_HAS_CPU_VR41XX
1553 select CPU_SUPPORTS_32BIT_KERNEL
1554 select CPU_SUPPORTS_64BIT_KERNEL
1556 The options selects support for the NEC VR4100 series of processors.
1557 Only choose this option if you have one of these processors as a
1558 kernel built with this option will not run on any other type of
1559 processor or vice versa.
1563 depends on SYS_HAS_CPU_R4300
1564 select CPU_SUPPORTS_32BIT_KERNEL
1565 select CPU_SUPPORTS_64BIT_KERNEL
1567 MIPS Technologies R4300-series processors.
1571 depends on SYS_HAS_CPU_R4X00
1572 select CPU_SUPPORTS_32BIT_KERNEL
1573 select CPU_SUPPORTS_64BIT_KERNEL
1574 select CPU_SUPPORTS_HUGEPAGES
1576 MIPS Technologies R4000-series processors other than 4300, including
1577 the R4000, R4400, R4600, and 4700.
1581 depends on SYS_HAS_CPU_TX49XX
1582 select CPU_HAS_PREFETCH
1583 select CPU_SUPPORTS_32BIT_KERNEL
1584 select CPU_SUPPORTS_64BIT_KERNEL
1585 select CPU_SUPPORTS_HUGEPAGES
1589 depends on SYS_HAS_CPU_R5000
1590 select CPU_SUPPORTS_32BIT_KERNEL
1591 select CPU_SUPPORTS_64BIT_KERNEL
1592 select CPU_SUPPORTS_HUGEPAGES
1594 MIPS Technologies R5000-series processors other than the Nevada.
1598 depends on SYS_HAS_CPU_R5432
1599 select CPU_SUPPORTS_32BIT_KERNEL
1600 select CPU_SUPPORTS_64BIT_KERNEL
1601 select CPU_SUPPORTS_HUGEPAGES
1605 depends on SYS_HAS_CPU_R5500
1606 select CPU_SUPPORTS_32BIT_KERNEL
1607 select CPU_SUPPORTS_64BIT_KERNEL
1608 select CPU_SUPPORTS_HUGEPAGES
1610 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1615 depends on SYS_HAS_CPU_NEVADA
1616 select CPU_SUPPORTS_32BIT_KERNEL
1617 select CPU_SUPPORTS_64BIT_KERNEL
1618 select CPU_SUPPORTS_HUGEPAGES
1620 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1624 depends on SYS_HAS_CPU_R8000
1625 select CPU_HAS_PREFETCH
1626 select CPU_SUPPORTS_64BIT_KERNEL
1628 MIPS Technologies R8000 processors. Note these processors are
1629 uncommon and the support for them is incomplete.
1633 depends on SYS_HAS_CPU_R10000
1634 select CPU_HAS_PREFETCH
1635 select CPU_SUPPORTS_32BIT_KERNEL
1636 select CPU_SUPPORTS_64BIT_KERNEL
1637 select CPU_SUPPORTS_HIGHMEM
1638 select CPU_SUPPORTS_HUGEPAGES
1640 MIPS Technologies R10000-series processors.
1644 depends on SYS_HAS_CPU_RM7000
1645 select CPU_HAS_PREFETCH
1646 select CPU_SUPPORTS_32BIT_KERNEL
1647 select CPU_SUPPORTS_64BIT_KERNEL
1648 select CPU_SUPPORTS_HIGHMEM
1649 select CPU_SUPPORTS_HUGEPAGES
1653 depends on SYS_HAS_CPU_SB1
1654 select CPU_SUPPORTS_32BIT_KERNEL
1655 select CPU_SUPPORTS_64BIT_KERNEL
1656 select CPU_SUPPORTS_HIGHMEM
1657 select CPU_SUPPORTS_HUGEPAGES
1658 select WEAK_ORDERING
1660 config CPU_CAVIUM_OCTEON
1661 bool "Cavium Octeon processor"
1662 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1663 select CPU_HAS_PREFETCH
1664 select CPU_SUPPORTS_64BIT_KERNEL
1665 select WEAK_ORDERING
1666 select CPU_SUPPORTS_HIGHMEM
1667 select CPU_SUPPORTS_HUGEPAGES
1668 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1669 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1670 select MIPS_L1_CACHE_SHIFT_7
1673 The Cavium Octeon processor is a highly integrated chip containing
1674 many ethernet hardware widgets for networking tasks. The processor
1675 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1676 Full details can be found at http://www.caviumnetworks.com.
1679 bool "Broadcom BMIPS"
1680 depends on SYS_HAS_CPU_BMIPS
1682 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1683 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1684 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1685 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1686 select CPU_SUPPORTS_32BIT_KERNEL
1687 select DMA_NONCOHERENT
1689 select SWAP_IO_SPACE
1690 select WEAK_ORDERING
1691 select CPU_SUPPORTS_HIGHMEM
1692 select CPU_HAS_PREFETCH
1693 select CPU_SUPPORTS_CPUFREQ
1694 select MIPS_EXTERNAL_TIMER
1696 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1699 bool "Netlogic XLR SoC"
1700 depends on SYS_HAS_CPU_XLR
1701 select CPU_SUPPORTS_32BIT_KERNEL
1702 select CPU_SUPPORTS_64BIT_KERNEL
1703 select CPU_SUPPORTS_HIGHMEM
1704 select CPU_SUPPORTS_HUGEPAGES
1705 select WEAK_ORDERING
1706 select WEAK_REORDERING_BEYOND_LLSC
1708 Netlogic Microsystems XLR/XLS processors.
1711 bool "Netlogic XLP SoC"
1712 depends on SYS_HAS_CPU_XLP
1713 select CPU_SUPPORTS_32BIT_KERNEL
1714 select CPU_SUPPORTS_64BIT_KERNEL
1715 select CPU_SUPPORTS_HIGHMEM
1716 select WEAK_ORDERING
1717 select WEAK_REORDERING_BEYOND_LLSC
1718 select CPU_HAS_PREFETCH
1720 select CPU_SUPPORTS_HUGEPAGES
1721 select MIPS_ASID_BITS_VARIABLE
1723 Netlogic Microsystems XLP processors.
1726 config CPU_MIPS32_3_5_FEATURES
1727 bool "MIPS32 Release 3.5 Features"
1728 depends on SYS_HAS_CPU_MIPS32_R3_5
1729 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1731 Choose this option to build a kernel for release 2 or later of the
1732 MIPS32 architecture including features from the 3.5 release such as
1733 support for Enhanced Virtual Addressing (EVA).
1735 config CPU_MIPS32_3_5_EVA
1736 bool "Enhanced Virtual Addressing (EVA)"
1737 depends on CPU_MIPS32_3_5_FEATURES
1741 Choose this option if you want to enable the Enhanced Virtual
1742 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1743 One of its primary benefits is an increase in the maximum size
1744 of lowmem (up to 3GB). If unsure, say 'N' here.
1746 config CPU_MIPS32_R5_FEATURES
1747 bool "MIPS32 Release 5 Features"
1748 depends on SYS_HAS_CPU_MIPS32_R5
1749 depends on CPU_MIPS32_R2
1751 Choose this option to build a kernel for release 2 or later of the
1752 MIPS32 architecture including features from release 5 such as
1753 support for Extended Physical Addressing (XPA).
1755 config CPU_MIPS32_R5_XPA
1756 bool "Extended Physical Addressing (XPA)"
1757 depends on CPU_MIPS32_R5_FEATURES
1759 depends on !PAGE_SIZE_4KB
1760 depends on SYS_SUPPORTS_HIGHMEM
1763 select ARCH_PHYS_ADDR_T_64BIT
1766 Choose this option if you want to enable the Extended Physical
1767 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1768 benefit is to increase physical addressing equal to or greater
1769 than 40 bits. Note that this has the side effect of turning on
1770 64-bit addressing which in turn makes the PTEs 64-bit in size.
1771 If unsure, say 'N' here.
1774 config CPU_NOP_WORKAROUNDS
1777 config CPU_JUMP_WORKAROUNDS
1780 config CPU_LOONGSON2F_WORKAROUNDS
1781 bool "Loongson 2F Workarounds"
1783 select CPU_NOP_WORKAROUNDS
1784 select CPU_JUMP_WORKAROUNDS
1786 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1787 require workarounds. Without workarounds the system may hang
1788 unexpectedly. For more information please refer to the gas
1789 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1791 Loongson 2F03 and later have fixed these issues and no workarounds
1792 are needed. The workarounds have no significant side effect on them
1793 but may decrease the performance of the system so this option should
1794 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1797 If unsure, please say Y.
1798 endif # CPU_LOONGSON2F
1800 config SYS_SUPPORTS_ZBOOT
1802 select HAVE_KERNEL_GZIP
1803 select HAVE_KERNEL_BZIP2
1804 select HAVE_KERNEL_LZ4
1805 select HAVE_KERNEL_LZMA
1806 select HAVE_KERNEL_LZO
1807 select HAVE_KERNEL_XZ
1809 config SYS_SUPPORTS_ZBOOT_UART16550
1811 select SYS_SUPPORTS_ZBOOT
1813 config SYS_SUPPORTS_ZBOOT_UART_PROM
1815 select SYS_SUPPORTS_ZBOOT
1817 config CPU_LOONGSON2
1819 select CPU_SUPPORTS_32BIT_KERNEL
1820 select CPU_SUPPORTS_64BIT_KERNEL
1821 select CPU_SUPPORTS_HIGHMEM
1822 select CPU_SUPPORTS_HUGEPAGES
1824 config CPU_LOONGSON1
1828 select CPU_HAS_PREFETCH
1829 select CPU_SUPPORTS_32BIT_KERNEL
1830 select CPU_SUPPORTS_HIGHMEM
1831 select CPU_SUPPORTS_CPUFREQ
1833 config CPU_BMIPS32_3300
1834 select SMP_UP if SMP
1837 config CPU_BMIPS4350
1839 select SYS_SUPPORTS_SMP
1840 select SYS_SUPPORTS_HOTPLUG_CPU
1842 config CPU_BMIPS4380
1844 select MIPS_L1_CACHE_SHIFT_6
1845 select SYS_SUPPORTS_SMP
1846 select SYS_SUPPORTS_HOTPLUG_CPU
1849 config CPU_BMIPS5000
1851 select MIPS_CPU_SCACHE
1852 select MIPS_L1_CACHE_SHIFT_7
1853 select SYS_SUPPORTS_SMP
1854 select SYS_SUPPORTS_HOTPLUG_CPU
1857 config SYS_HAS_CPU_LOONGSON3
1859 select CPU_SUPPORTS_CPUFREQ
1862 config SYS_HAS_CPU_LOONGSON2E
1865 config SYS_HAS_CPU_LOONGSON2F
1867 select CPU_SUPPORTS_CPUFREQ
1868 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1869 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1871 config SYS_HAS_CPU_LOONGSON1B
1874 config SYS_HAS_CPU_LOONGSON1C
1877 config SYS_HAS_CPU_MIPS32_R1
1880 config SYS_HAS_CPU_MIPS32_R2
1883 config SYS_HAS_CPU_MIPS32_R3_5
1886 config SYS_HAS_CPU_MIPS32_R5
1889 config SYS_HAS_CPU_MIPS32_R6
1892 config SYS_HAS_CPU_MIPS64_R1
1895 config SYS_HAS_CPU_MIPS64_R2
1898 config SYS_HAS_CPU_MIPS64_R6
1901 config SYS_HAS_CPU_R3000
1904 config SYS_HAS_CPU_TX39XX
1907 config SYS_HAS_CPU_VR41XX
1910 config SYS_HAS_CPU_R4300
1913 config SYS_HAS_CPU_R4X00
1916 config SYS_HAS_CPU_TX49XX
1919 config SYS_HAS_CPU_R5000
1922 config SYS_HAS_CPU_R5432
1925 config SYS_HAS_CPU_R5500
1928 config SYS_HAS_CPU_NEVADA
1931 config SYS_HAS_CPU_R8000
1934 config SYS_HAS_CPU_R10000
1937 config SYS_HAS_CPU_RM7000
1940 config SYS_HAS_CPU_SB1
1943 config SYS_HAS_CPU_CAVIUM_OCTEON
1946 config SYS_HAS_CPU_BMIPS
1949 config SYS_HAS_CPU_BMIPS32_3300
1951 select SYS_HAS_CPU_BMIPS
1953 config SYS_HAS_CPU_BMIPS4350
1955 select SYS_HAS_CPU_BMIPS
1957 config SYS_HAS_CPU_BMIPS4380
1959 select SYS_HAS_CPU_BMIPS
1961 config SYS_HAS_CPU_BMIPS5000
1963 select SYS_HAS_CPU_BMIPS
1965 config SYS_HAS_CPU_XLR
1968 config SYS_HAS_CPU_XLP
1971 config MIPS_MALTA_PM
1972 depends on MIPS_MALTA
1978 # CPU may reorder R->R, R->W, W->R, W->W
1979 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1981 config WEAK_ORDERING
1985 # CPU may reorder reads and writes beyond LL/SC
1986 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1988 config WEAK_REORDERING_BEYOND_LLSC
1993 # These two indicate any level of the MIPS32 and MIPS64 architecture
1997 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2001 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2004 # These two indicate the revision of the architecture, either Release 1 or Release 2
2008 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2012 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2018 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2020 select HAVE_ARCH_BITREVERSE
2021 select MIPS_ASID_BITS_VARIABLE
2030 config SYS_SUPPORTS_32BIT_KERNEL
2032 config SYS_SUPPORTS_64BIT_KERNEL
2034 config CPU_SUPPORTS_32BIT_KERNEL
2036 config CPU_SUPPORTS_64BIT_KERNEL
2038 config CPU_SUPPORTS_CPUFREQ
2040 config CPU_SUPPORTS_ADDRWINCFG
2042 config CPU_SUPPORTS_HUGEPAGES
2044 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2046 config MIPS_PGD_C0_CONTEXT
2048 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2051 # Set to y for ptrace access to watch registers.
2053 config HARDWARE_WATCHPOINTS
2055 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2060 prompt "Kernel code model"
2062 You should only select this option if you have a workload that
2063 actually benefits from 64-bit processing or if your machine has
2064 large memory. You will only be presented a single option in this
2065 menu if your system does not support both 32-bit and 64-bit kernels.
2068 bool "32-bit kernel"
2069 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2072 Select this option if you want to build a 32-bit kernel.
2075 bool "64-bit kernel"
2076 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2078 Select this option if you want to build a 64-bit kernel.
2083 bool "KVM Guest Kernel"
2084 depends on BROKEN_ON_SMP
2086 Select this option if building a guest kernel for KVM (Trap & Emulate)
2089 config KVM_GUEST_TIMER_FREQ
2090 int "Count/Compare Timer Frequency (MHz)"
2091 depends on KVM_GUEST
2094 Set this to non-zero if building a guest kernel for KVM to skip RTC
2095 emulation when determining guest CPU Frequency. Instead, the guest's
2096 timer frequency is specified directly.
2098 config MIPS_VA_BITS_48
2099 bool "48 bits virtual memory"
2102 Support a maximum at least 48 bits of application virtual
2103 memory. Default is 40 bits or less, depending on the CPU.
2104 For page sizes 16k and above, this option results in a small
2105 memory overhead for page tables. For 4k page size, a fourth
2106 level of page tables is added which imposes both a memory
2107 overhead as well as slower TLB fault handling.
2112 prompt "Kernel page size"
2113 default PAGE_SIZE_4KB
2115 config PAGE_SIZE_4KB
2117 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2119 This option select the standard 4kB Linux page size. On some
2120 R3000-family processors this is the only available page size. Using
2121 4kB page size will minimize memory consumption and is therefore
2122 recommended for low memory systems.
2124 config PAGE_SIZE_8KB
2126 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2127 depends on !MIPS_VA_BITS_48
2129 Using 8kB page size will result in higher performance kernel at
2130 the price of higher memory consumption. This option is available
2131 only on R8000 and cnMIPS processors. Note that you will need a
2132 suitable Linux distribution to support this.
2134 config PAGE_SIZE_16KB
2136 depends on !CPU_R3000 && !CPU_TX39XX
2138 Using 16kB page size will result in higher performance kernel at
2139 the price of higher memory consumption. This option is available on
2140 all non-R3000 family processors. Note that you will need a suitable
2141 Linux distribution to support this.
2143 config PAGE_SIZE_32KB
2145 depends on CPU_CAVIUM_OCTEON
2146 depends on !MIPS_VA_BITS_48
2148 Using 32kB page size will result in higher performance kernel at
2149 the price of higher memory consumption. This option is available
2150 only on cnMIPS cores. Note that you will need a suitable Linux
2151 distribution to support this.
2153 config PAGE_SIZE_64KB
2155 depends on !CPU_R3000 && !CPU_TX39XX
2157 Using 64kB page size will result in higher performance kernel at
2158 the price of higher memory consumption. This option is available on
2159 all non-R3000 family processor. Not that at the time of this
2160 writing this option is still high experimental.
2164 config FORCE_MAX_ZONEORDER
2165 int "Maximum zone order"
2166 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2167 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2168 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2169 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2170 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2171 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2175 The kernel memory allocator divides physically contiguous memory
2176 blocks into "zones", where each zone is a power of two number of
2177 pages. This option selects the largest power of two that the kernel
2178 keeps in the memory allocator. If you need to allocate very large
2179 blocks of physically contiguous memory, then you may need to
2180 increase this value.
2182 This config option is actually maximum order plus one. For example,
2183 a value of 11 means that the largest free memory block is 2^10 pages.
2185 The page size is not necessarily 4KB. Keep this in mind
2186 when choosing a value for this option.
2191 config IP22_CPU_SCACHE
2196 # Support for a MIPS32 / MIPS64 style S-caches
2198 config MIPS_CPU_SCACHE
2202 config R5000_CPU_SCACHE
2206 config RM7000_CPU_SCACHE
2210 config SIBYTE_DMA_PAGEOPS
2211 bool "Use DMA to clear/copy pages"
2214 Instead of using the CPU to zero and copy pages, use a Data Mover
2215 channel. These DMA channels are otherwise unused by the standard
2216 SiByte Linux port. Seems to give a small performance benefit.
2218 config CPU_HAS_PREFETCH
2221 config CPU_GENERIC_DUMP_TLB
2223 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
2227 default y if !(CPU_R3000 || CPU_TX39XX)
2229 config CPU_R4K_CACHE_TLB
2231 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2234 bool "MIPS MT SMP support (1 TC on each available VPE)"
2236 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2237 select CPU_MIPSR2_IRQ_VI
2238 select CPU_MIPSR2_IRQ_EI
2243 select SYS_SUPPORTS_SMP
2244 select SYS_SUPPORTS_SCHED_SMT
2245 select MIPS_PERF_SHARED_TC_COUNTERS
2247 This is a kernel model which is known as SMVP. This is supported
2248 on cores with the MT ASE and uses the available VPEs to implement
2249 virtual processors which supports SMP. This is equivalent to the
2250 Intel Hyperthreading feature. For further information go to
2251 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2257 bool "SMT (multithreading) scheduler support"
2258 depends on SYS_SUPPORTS_SCHED_SMT
2261 SMT scheduler support improves the CPU scheduler's decision making
2262 when dealing with MIPS MT enabled cores at a cost of slightly
2263 increased overhead in some places. If unsure say N here.
2265 config SYS_SUPPORTS_SCHED_SMT
2268 config SYS_SUPPORTS_MULTITHREADING
2271 config MIPS_MT_FPAFF
2272 bool "Dynamic FPU affinity for FP-intensive threads"
2274 depends on MIPS_MT_SMP
2276 config MIPSR2_TO_R6_EMULATOR
2277 bool "MIPS R2-to-R6 emulator"
2278 depends on CPU_MIPSR6
2281 Choose this option if you want to run non-R6 MIPS userland code.
2282 Even if you say 'Y' here, the emulator will still be disabled by
2283 default. You can enable it using the 'mipsr2emu' kernel option.
2284 The only reason this is a build-time option is to save ~14K from the
2287 config SYS_SUPPORTS_VPE_LOADER
2289 depends on SYS_SUPPORTS_MULTITHREADING
2291 Indicates that the platform supports the VPE loader, and provides
2294 config MIPS_VPE_LOADER
2295 bool "VPE loader support."
2296 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2297 select CPU_MIPSR2_IRQ_VI
2298 select CPU_MIPSR2_IRQ_EI
2301 Includes a loader for loading an elf relocatable object
2302 onto another VPE and running it.
2304 config MIPS_VPE_LOADER_CMP
2307 depends on MIPS_VPE_LOADER && MIPS_CMP
2309 config MIPS_VPE_LOADER_MT
2312 depends on MIPS_VPE_LOADER && !MIPS_CMP
2314 config MIPS_VPE_LOADER_TOM
2315 bool "Load VPE program into memory hidden from linux"
2316 depends on MIPS_VPE_LOADER
2319 The loader can use memory that is present but has been hidden from
2320 Linux using the kernel command line option "mem=xxMB". It's up to
2321 you to ensure the amount you put in the option and the space your
2322 program requires is less or equal to the amount physically present.
2324 config MIPS_VPE_APSP_API
2325 bool "Enable support for AP/SP API (RTLX)"
2326 depends on MIPS_VPE_LOADER
2329 config MIPS_VPE_APSP_API_CMP
2332 depends on MIPS_VPE_APSP_API && MIPS_CMP
2334 config MIPS_VPE_APSP_API_MT
2337 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2340 bool "MIPS CMP framework support (DEPRECATED)"
2341 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2344 select SYS_SUPPORTS_SMP
2345 select WEAK_ORDERING
2348 Select this if you are using a bootloader which implements the "CMP
2349 framework" protocol (ie. YAMON) and want your kernel to make use of
2350 its ability to start secondary CPUs.
2352 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2356 bool "MIPS Coherent Processing System support"
2357 depends on SYS_SUPPORTS_MIPS_CPS
2359 select MIPS_CPS_PM if HOTPLUG_CPU
2361 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2362 select SYS_SUPPORTS_HOTPLUG_CPU
2363 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2364 select SYS_SUPPORTS_SMP
2365 select WEAK_ORDERING
2367 Select this if you wish to run an SMP kernel across multiple cores
2368 within a MIPS Coherent Processing System. When this option is
2369 enabled the kernel will probe for other cores and boot them with
2370 no external assistance. It is safe to enable this when hardware
2371 support is unavailable.
2384 config SB1_PASS_2_WORKAROUNDS
2386 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2389 config SB1_PASS_2_1_WORKAROUNDS
2391 depends on CPU_SB1 && CPU_SB1_PASS_2
2395 config ARCH_PHYS_ADDR_T_64BIT
2399 prompt "SmartMIPS or microMIPS ASE support"
2401 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2404 Select this if you want neither microMIPS nor SmartMIPS support
2406 config CPU_HAS_SMARTMIPS
2407 depends on SYS_SUPPORTS_SMARTMIPS
2410 SmartMIPS is a extension of the MIPS32 architecture aimed at
2411 increased security at both hardware and software level for
2412 smartcards. Enabling this option will allow proper use of the
2413 SmartMIPS instructions by Linux applications. However a kernel with
2414 this option will not work on a MIPS core without SmartMIPS core. If
2415 you don't know you probably don't have SmartMIPS and should say N
2418 config CPU_MICROMIPS
2419 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2422 When this option is enabled the kernel will be built using the
2428 bool "Support for the MIPS SIMD Architecture"
2429 depends on CPU_SUPPORTS_MSA
2430 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2432 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2433 and a set of SIMD instructions to operate on them. When this option
2434 is enabled the kernel will support allocating & switching MSA
2435 vector register contexts. If you know that your kernel will only be
2436 running on CPUs which do not support MSA or that your userland will
2437 not be making use of it then you may wish to say N here to reduce
2438 the size & complexity of your kernel.
2452 # Vectored interrupt mode is an R2 feature
2454 config CPU_MIPSR2_IRQ_VI
2458 # Extended interrupt mode is an R2 feature
2460 config CPU_MIPSR2_IRQ_EI
2465 depends on !CPU_R3000
2471 config CPU_DADDI_WORKAROUNDS
2474 config CPU_R4000_WORKAROUNDS
2476 select CPU_R4400_WORKAROUNDS
2478 config CPU_R4400_WORKAROUNDS
2481 config MIPS_ASID_SHIFT
2483 default 6 if CPU_R3000 || CPU_TX39XX
2484 default 4 if CPU_R8000
2487 config MIPS_ASID_BITS
2489 default 0 if MIPS_ASID_BITS_VARIABLE
2490 default 6 if CPU_R3000 || CPU_TX39XX
2493 config MIPS_ASID_BITS_VARIABLE
2497 # - Highmem only makes sense for the 32-bit kernel.
2498 # - The current highmem code will only work properly on physically indexed
2499 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2500 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2501 # moment we protect the user and offer the highmem option only on machines
2502 # where it's known to be safe. This will not offer highmem on a few systems
2503 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2504 # indexed CPUs but we're playing safe.
2505 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2506 # know they might have memory configurations that could make use of highmem
2510 bool "High Memory Support"
2511 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2513 config CPU_SUPPORTS_HIGHMEM
2516 config SYS_SUPPORTS_HIGHMEM
2519 config SYS_SUPPORTS_SMARTMIPS
2522 config SYS_SUPPORTS_MICROMIPS
2525 config SYS_SUPPORTS_MIPS16
2528 This option must be set if a kernel might be executed on a MIPS16-
2529 enabled CPU even if MIPS16 is not actually being used. In other
2530 words, it makes the kernel MIPS16-tolerant.
2532 config CPU_SUPPORTS_MSA
2535 config ARCH_FLATMEM_ENABLE
2537 depends on !NUMA && !CPU_LOONGSON2
2539 config ARCH_DISCONTIGMEM_ENABLE
2541 default y if SGI_IP27
2543 Say Y to support efficient handling of discontiguous physical memory,
2544 for architectures which are either NUMA (Non-Uniform Memory Access)
2545 or have huge holes in the physical address space for other reasons.
2546 See <file:Documentation/vm/numa> for more.
2548 config ARCH_SPARSEMEM_ENABLE
2550 select SPARSEMEM_STATIC
2554 depends on SYS_SUPPORTS_NUMA
2556 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2557 Access). This option improves performance on systems with more
2558 than two nodes; on two node systems it is generally better to
2559 leave it disabled; on single node systems disable this option
2562 config SYS_SUPPORTS_NUMA
2566 bool "Relocatable kernel"
2567 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2569 This builds a kernel image that retains relocation information
2570 so it can be loaded someplace besides the default 1MB.
2571 The relocations make the kernel binary about 15% larger,
2572 but are discarded at runtime
2574 config RELOCATION_TABLE_SIZE
2575 hex "Relocation table size"
2576 depends on RELOCATABLE
2577 range 0x0 0x01000000
2578 default "0x00100000"
2580 A table of relocation data will be appended to the kernel binary
2581 and parsed at boot to fix up the relocated kernel.
2583 This option allows the amount of space reserved for the table to be
2584 adjusted, although the default of 1Mb should be ok in most cases.
2586 The build will fail and a valid size suggested if this is too small.
2588 If unsure, leave at the default value.
2590 config RANDOMIZE_BASE
2591 bool "Randomize the address of the kernel image"
2592 depends on RELOCATABLE
2594 Randomizes the physical and virtual address at which the
2595 kernel image is loaded, as a security feature that
2596 deters exploit attempts relying on knowledge of the location
2597 of kernel internals.
2599 Entropy is generated using any coprocessor 0 registers available.
2601 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2605 config RANDOMIZE_BASE_MAX_OFFSET
2606 hex "Maximum kASLR offset" if EXPERT
2607 depends on RANDOMIZE_BASE
2608 range 0x0 0x40000000 if EVA || 64BIT
2609 range 0x0 0x08000000
2610 default "0x01000000"
2612 When kASLR is active, this provides the maximum offset that will
2613 be applied to the kernel image. It should be set according to the
2614 amount of physical RAM available in the target system minus
2615 PHYSICAL_START and must be a power of 2.
2617 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2618 EVA or 64-bit. The default is 16Mb.
2623 depends on NEED_MULTIPLE_NODES
2625 config HW_PERF_EVENTS
2626 bool "Enable hardware performance counter support for perf events"
2627 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2630 Enable hardware performance counter support for perf events. If
2631 disabled, perf events will use software events only.
2636 bool "Multi-Processing support"
2637 depends on SYS_SUPPORTS_SMP
2639 This enables support for systems with more than one CPU. If you have
2640 a system with only one CPU, say N. If you have a system with more
2641 than one CPU, say Y.
2643 If you say N here, the kernel will run on uni- and multiprocessor
2644 machines, but will use only one CPU of a multiprocessor machine. If
2645 you say Y here, the kernel will run on many, but not all,
2646 uniprocessor machines. On a uniprocessor machine, the kernel
2647 will run faster if you say N here.
2649 People using multiprocessor machines who say Y here should also say
2650 Y to "Enhanced Real Time Clock Support", below.
2652 See also the SMP-HOWTO available at
2653 <http://www.tldp.org/docs.html#howto>.
2655 If you don't know what to do here, say N.
2658 bool "Support for hot-pluggable CPUs"
2659 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2661 Say Y here to allow turning CPUs off and on. CPUs can be
2662 controlled through /sys/devices/system/cpu.
2663 (Note: power management support will enable this option
2664 automatically on SMP systems. )
2665 Say N if you want to disable CPU hotplug.
2670 config SYS_SUPPORTS_MIPS_CMP
2673 config SYS_SUPPORTS_MIPS_CPS
2676 config SYS_SUPPORTS_SMP
2679 config NR_CPUS_DEFAULT_4
2682 config NR_CPUS_DEFAULT_8
2685 config NR_CPUS_DEFAULT_16
2688 config NR_CPUS_DEFAULT_32
2691 config NR_CPUS_DEFAULT_64
2695 int "Maximum number of CPUs (2-256)"
2698 default "4" if NR_CPUS_DEFAULT_4
2699 default "8" if NR_CPUS_DEFAULT_8
2700 default "16" if NR_CPUS_DEFAULT_16
2701 default "32" if NR_CPUS_DEFAULT_32
2702 default "64" if NR_CPUS_DEFAULT_64
2704 This allows you to specify the maximum number of CPUs which this
2705 kernel will support. The maximum supported value is 32 for 32-bit
2706 kernel and 64 for 64-bit kernels; the minimum value which makes
2707 sense is 1 for Qemu (useful only for kernel debugging purposes)
2708 and 2 for all others.
2710 This is purely to save memory - each supported CPU adds
2711 approximately eight kilobytes to the kernel image. For best
2712 performance should round up your number of processors to the next
2715 config MIPS_PERF_SHARED_TC_COUNTERS
2718 config MIPS_NR_CPU_NR_MAP_1024
2721 config MIPS_NR_CPU_NR_MAP
2724 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2725 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2728 # Timer Interrupt Frequency Configuration
2732 prompt "Timer frequency"
2735 Allows the configuration of the timer frequency.
2738 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2741 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2744 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2747 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2750 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2753 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2756 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2759 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2763 config SYS_SUPPORTS_24HZ
2766 config SYS_SUPPORTS_48HZ
2769 config SYS_SUPPORTS_100HZ
2772 config SYS_SUPPORTS_128HZ
2775 config SYS_SUPPORTS_250HZ
2778 config SYS_SUPPORTS_256HZ
2781 config SYS_SUPPORTS_1000HZ
2784 config SYS_SUPPORTS_1024HZ
2787 config SYS_SUPPORTS_ARBIT_HZ
2789 default y if !SYS_SUPPORTS_24HZ && \
2790 !SYS_SUPPORTS_48HZ && \
2791 !SYS_SUPPORTS_100HZ && \
2792 !SYS_SUPPORTS_128HZ && \
2793 !SYS_SUPPORTS_250HZ && \
2794 !SYS_SUPPORTS_256HZ && \
2795 !SYS_SUPPORTS_1000HZ && \
2796 !SYS_SUPPORTS_1024HZ
2802 default 100 if HZ_100
2803 default 128 if HZ_128
2804 default 250 if HZ_250
2805 default 256 if HZ_256
2806 default 1000 if HZ_1000
2807 default 1024 if HZ_1024
2810 def_bool HIGH_RES_TIMERS
2812 source "kernel/Kconfig.preempt"
2815 bool "Kexec system call"
2818 kexec is a system call that implements the ability to shutdown your
2819 current kernel, and to start another kernel. It is like a reboot
2820 but it is independent of the system firmware. And like a reboot
2821 you can start any kernel with it, not just Linux.
2823 The name comes from the similarity to the exec system call.
2825 It is an ongoing process to be certain the hardware in a machine
2826 is properly shutdown, so do not be surprised if this code does not
2827 initially work for you. As of this writing the exact hardware
2828 interface is strongly in flux, so no good recommendation can be
2832 bool "Kernel crash dumps"
2834 Generate crash dump after being started by kexec.
2835 This should be normally only set in special crash dump kernels
2836 which are loaded in the main kernel with kexec-tools into
2837 a specially reserved region and then later executed after
2838 a crash by kdump/kexec. The crash dump kernel must be compiled
2839 to a memory address not used by the main kernel or firmware using
2842 config PHYSICAL_START
2843 hex "Physical address where the kernel is loaded"
2844 default "0xffffffff84000000" if 64BIT
2845 default "0x84000000" if 32BIT
2846 depends on CRASH_DUMP
2848 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2849 If you plan to use kernel for capturing the crash dump change
2850 this value to start of the reserved region (the "X" value as
2851 specified in the "crashkernel=YM@XM" command line boot parameter
2852 passed to the panic-ed kernel).
2855 bool "Enable seccomp to safely compute untrusted bytecode"
2859 This kernel feature is useful for number crunching applications
2860 that may need to compute untrusted bytecode during their
2861 execution. By using pipes or other transports made available to
2862 the process as file descriptors supporting the read/write
2863 syscalls, it's possible to isolate those applications in
2864 their own address space using seccomp. Once seccomp is
2865 enabled via /proc/<pid>/seccomp, it cannot be disabled
2866 and the task is only allowed to execute a few safe syscalls
2867 defined by each seccomp mode.
2869 If unsure, say Y. Only embedded should say N here.
2871 config MIPS_O32_FP64_SUPPORT
2872 bool "Support for O32 binaries using 64-bit FP"
2873 depends on 32BIT || MIPS32_O32
2875 When this is enabled, the kernel will support use of 64-bit floating
2876 point registers with binaries using the O32 ABI along with the
2877 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2878 32-bit MIPS systems this support is at the cost of increasing the
2879 size and complexity of the compiled FPU emulator. Thus if you are
2880 running a MIPS32 system and know that none of your userland binaries
2881 will require 64-bit floating point, you may wish to reduce the size
2882 of your kernel & potentially improve FP emulation performance by
2885 Although binutils currently supports use of this flag the details
2886 concerning its effect upon the O32 ABI in userland are still being
2887 worked on. In order to avoid userland becoming dependant upon current
2888 behaviour before the details have been finalised, this option should
2889 be considered experimental and only enabled by those working upon
2897 select OF_EARLY_FLATTREE
2904 prompt "Kernel appended dtb support" if USE_OF
2905 default MIPS_NO_APPENDED_DTB
2907 config MIPS_NO_APPENDED_DTB
2910 Do not enable appended dtb support.
2912 config MIPS_ELF_APPENDED_DTB
2915 With this option, the boot code will look for a device tree binary
2916 DTB) included in the vmlinux ELF section .appended_dtb. By default
2917 it is empty and the DTB can be appended using binutils command
2920 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2922 This is meant as a backward compatiblity convenience for those
2923 systems with a bootloader that can't be upgraded to accommodate
2924 the documented boot protocol using a device tree.
2926 config MIPS_RAW_APPENDED_DTB
2927 bool "vmlinux.bin or vmlinuz.bin"
2929 With this option, the boot code will look for a device tree binary
2930 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2931 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2933 This is meant as a backward compatibility convenience for those
2934 systems with a bootloader that can't be upgraded to accommodate
2935 the documented boot protocol using a device tree.
2937 Beware that there is very little in terms of protection against
2938 this option being confused by leftover garbage in memory that might
2939 look like a DTB header after a reboot if no actual DTB is appended
2940 to vmlinux.bin. Do not leave this option active in a production kernel
2941 if you don't intend to always append a DTB.
2945 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2946 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2949 default MIPS_CMDLINE_FROM_BOOTLOADER
2951 config MIPS_CMDLINE_FROM_DTB
2953 bool "Dtb kernel arguments if available"
2955 config MIPS_CMDLINE_DTB_EXTEND
2957 bool "Extend dtb kernel arguments with bootloader arguments"
2959 config MIPS_CMDLINE_FROM_BOOTLOADER
2960 bool "Bootloader kernel arguments if available"
2962 config MIPS_CMDLINE_BUILTIN_EXTEND
2963 depends on CMDLINE_BOOL
2964 bool "Extend builtin kernel arguments with bootloader arguments"
2969 config LOCKDEP_SUPPORT
2973 config STACKTRACE_SUPPORT
2977 config HAVE_LATENCYTOP_SUPPORT
2981 config PGTABLE_LEVELS
2983 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
2984 default 3 if 64BIT && !PAGE_SIZE_64KB
2987 source "init/Kconfig"
2989 source "kernel/Kconfig.freezer"
2991 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2999 bool "Support for PCI controller"
3000 depends on HW_HAS_PCI
3003 Find out whether you have a PCI motherboard. PCI is the name of a
3004 bus system, i.e. the way the CPU talks to the other stuff inside
3005 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
3009 bool "Support for HT-linked PCI"
3011 depends on CPU_LOONGSON3
3015 Loongson family machines use Hyper-Transport bus for inter-core
3016 connection and device connection. The PCI bus is a subordinate
3017 linked at HT. Choose Y for Loongson-3 based machines.
3022 config PCI_DOMAINS_GENERIC
3025 config PCI_DRIVERS_GENERIC
3026 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3029 config PCI_DRIVERS_LEGACY
3030 def_bool !PCI_DRIVERS_GENERIC
3031 select NO_GENERIC_PCI_IOPORT_MAP
3033 source "drivers/pci/Kconfig"
3036 # ISA support is now enabled via select. Too many systems still have the one
3037 # or other ISA chip on the board that users don't know about so don't expect
3038 # users to choose the right thing ...
3045 depends on HW_HAS_EISA
3047 select GENERIC_ISA_DMA
3049 The Extended Industry Standard Architecture (EISA) bus was
3050 developed as an open alternative to the IBM MicroChannel bus.
3052 The EISA bus provided some of the features of the IBM MicroChannel
3053 bus while maintaining backward compatibility with cards made for
3054 the older ISA bus. The EISA bus saw limited use between 1988 and
3055 1995 when it was made obsolete by the PCI bus.
3057 Say Y here if you are building a kernel for an EISA-based machine.
3061 source "drivers/eisa/Kconfig"
3064 bool "TURBOchannel support"
3065 depends on MACH_DECSTATION
3067 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3068 processors. TURBOchannel programming specifications are available
3070 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3072 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3073 Linux driver support status is documented at:
3074 <http://www.linux-mips.org/wiki/DECstation>
3080 config ARCH_MMAP_RND_BITS_MIN
3084 config ARCH_MMAP_RND_BITS_MAX
3088 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3091 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3098 select MIPS_EXTERNAL_TIMER
3106 source "drivers/pcmcia/Kconfig"
3109 tristate "RapidIO support"
3113 If you say Y here, the kernel will include drivers and
3114 infrastructure code to support RapidIO interconnect devices.
3116 source "drivers/rapidio/Kconfig"
3120 menu "Executable file formats"
3122 source "fs/Kconfig.binfmt"
3127 config MIPS32_COMPAT
3133 config SYSVIPC_COMPAT
3137 bool "Kernel support for o32 binaries"
3139 select ARCH_WANT_OLD_COMPAT_IPC
3141 select MIPS32_COMPAT
3142 select SYSVIPC_COMPAT if SYSVIPC
3144 Select this option if you want to run o32 binaries. These are pure
3145 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3146 existing binaries are in this format.
3151 bool "Kernel support for n32 binaries"
3154 select MIPS32_COMPAT
3155 select SYSVIPC_COMPAT if SYSVIPC
3157 Select this option if you want to run n32 binaries. These are
3158 64-bit binaries using 32-bit quantities for addressing and certain
3159 data that would normally be 64-bit. They are used in special
3166 default y if MIPS32_O32 || MIPS32_N32
3171 menu "Power management options"
3173 config ARCH_HIBERNATION_POSSIBLE
3175 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3177 config ARCH_SUSPEND_POSSIBLE
3179 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3181 source "kernel/power/Kconfig"
3185 config MIPS_EXTERNAL_TIMER
3188 menu "CPU Power Management"
3190 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3191 source "drivers/cpufreq/Kconfig"
3194 source "drivers/cpuidle/Kconfig"
3198 source "net/Kconfig"
3200 source "drivers/Kconfig"
3202 source "drivers/firmware/Kconfig"
3206 source "arch/mips/Kconfig.debug"
3208 source "security/Kconfig"
3210 source "crypto/Kconfig"
3212 source "lib/Kconfig"
3214 source "arch/mips/kvm/Kconfig"