1 # SPDX-License-Identifier: GPL-2.0
5 select ARCH_BINFMT_ELF_STATE
6 select ARCH_CLOCKSOURCE_DATA
7 select ARCH_DISCARD_MEMBLOCK
8 select ARCH_HAS_ELF_RANDOMIZE
9 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
10 select ARCH_SUPPORTS_UPROBES
11 select ARCH_USE_BUILTIN_BSWAP
12 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
13 select ARCH_USE_QUEUED_RWLOCKS
14 select ARCH_USE_QUEUED_SPINLOCKS
15 select ARCH_WANT_IPC_PARSE_VERSION
16 select BUILDTIME_EXTABLE_SORT
17 select CLONE_BACKWARDS
18 select CPU_PM if CPU_IDLE
19 select GENERIC_ATOMIC64 if !64BIT
20 select GENERIC_CLOCKEVENTS
21 select GENERIC_CMOS_UPDATE
22 select GENERIC_CPU_AUTOPROBE
23 select GENERIC_IRQ_PROBE
24 select GENERIC_IRQ_SHOW
25 select GENERIC_PCI_IOMAP
26 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
27 select GENERIC_SMP_IDLE_THREAD
28 select GENERIC_TIME_VSYSCALL
29 select HANDLE_DOMAIN_IRQ
30 select HAVE_ARCH_JUMP_LABEL
32 select HAVE_ARCH_MMAP_RND_BITS if MMU
33 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
34 select HAVE_ARCH_SECCOMP_FILTER
35 select HAVE_ARCH_TRACEHOOK
36 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
37 select HAVE_CBPF_JIT if (!64BIT && !CPU_MICROMIPS)
38 select HAVE_EBPF_JIT if (64BIT && !CPU_MICROMIPS)
39 select HAVE_CC_STACKPROTECTOR
40 select HAVE_CONTEXT_TRACKING
41 select HAVE_COPY_THREAD_TLS
42 select HAVE_C_RECORDMCOUNT
43 select HAVE_DEBUG_KMEMLEAK
44 select HAVE_DEBUG_STACKOVERFLOW
45 select HAVE_DMA_API_DEBUG
46 select HAVE_DMA_CONTIGUOUS
47 select HAVE_DYNAMIC_FTRACE
48 select HAVE_EXIT_THREAD
49 select HAVE_FTRACE_MCOUNT_RECORD
50 select HAVE_FUNCTION_GRAPH_TRACER
51 select HAVE_FUNCTION_TRACER
52 select HAVE_GENERIC_DMA_COHERENT
54 select HAVE_IRQ_EXIT_ON_IRQ_STACK
55 select HAVE_IRQ_TIME_ACCOUNTING
57 select HAVE_KRETPROBES
59 select HAVE_MEMBLOCK_NODE_MAP
60 select HAVE_MOD_ARCH_SPECIFIC
63 select HAVE_PERF_EVENTS
64 select HAVE_REGS_AND_STACK_ACCESS_API
65 select HAVE_SYSCALL_TRACEPOINTS
66 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
67 select IRQ_FORCED_THREADING
68 select MODULES_USE_ELF_RELA if MODULES && 64BIT
69 select MODULES_USE_ELF_REL if MODULES
70 select PERF_USE_VMALLOC
71 select RTC_LIB if !MACH_LOONGSON64
72 select SYSCTL_EXCEPTION_TRACE
75 menu "Machine selection"
82 bool "Generic board-agnostic MIPS kernel"
86 select CLKSRC_MIPS_GIC
88 select CPU_MIPSR2_IRQ_VI
89 select CPU_MIPSR2_IRQ_EI
91 select DMA_PERDEV_COHERENT
95 select MIPS_CPU_SCACHE
97 select MIPS_L1_CACHE_SHIFT_7
99 select PCI_DRIVERS_GENERIC
103 select SYS_HAS_CPU_MIPS32_R1
104 select SYS_HAS_CPU_MIPS32_R2
105 select SYS_HAS_CPU_MIPS32_R6
106 select SYS_HAS_CPU_MIPS64_R1
107 select SYS_HAS_CPU_MIPS64_R2
108 select SYS_HAS_CPU_MIPS64_R6
109 select SYS_SUPPORTS_32BIT_KERNEL
110 select SYS_SUPPORTS_64BIT_KERNEL
111 select SYS_SUPPORTS_BIG_ENDIAN
112 select SYS_SUPPORTS_HIGHMEM
113 select SYS_SUPPORTS_LITTLE_ENDIAN
114 select SYS_SUPPORTS_MICROMIPS
115 select SYS_SUPPORTS_MIPS_CPS
116 select SYS_SUPPORTS_MIPS16
117 select SYS_SUPPORTS_MULTITHREADING
118 select SYS_SUPPORTS_RELOCATABLE
119 select SYS_SUPPORTS_SMARTMIPS
120 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
121 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
122 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
123 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
124 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
125 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
128 Select this to build a kernel which aims to support multiple boards,
129 generally using a flattened device tree passed from the bootloader
130 using the boot protocol defined in the UHI (Unified Hosting
131 Interface) specification.
134 bool "Alchemy processor based machines"
135 select ARCH_PHYS_ADDR_T_64BIT
139 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
140 select SYS_HAS_CPU_MIPS32_R1
141 select SYS_SUPPORTS_32BIT_KERNEL
142 select SYS_SUPPORTS_APM_EMULATION
144 select SYS_SUPPORTS_ZBOOT
148 bool "Texas Instruments AR7"
150 select DMA_NONCOHERENT
154 select NO_EXCEPT_FILL
156 select SYS_HAS_CPU_MIPS32_R1
157 select SYS_HAS_EARLY_PRINTK
158 select SYS_SUPPORTS_32BIT_KERNEL
159 select SYS_SUPPORTS_LITTLE_ENDIAN
160 select SYS_SUPPORTS_MIPS16
161 select SYS_SUPPORTS_ZBOOT_UART16550
166 Support for the Texas Instruments AR7 System-on-a-Chip
167 family: TNETD7100, 7200 and 7300.
170 bool "Atheros AR231x/AR531x SoC support"
173 select DMA_NONCOHERENT
176 select SYS_HAS_CPU_MIPS32_R1
177 select SYS_SUPPORTS_BIG_ENDIAN
178 select SYS_SUPPORTS_32BIT_KERNEL
179 select SYS_HAS_EARLY_PRINTK
181 Support for Atheros AR231x and Atheros AR531x based boards
184 bool "Atheros AR71XX/AR724X/AR913X based boards"
185 select ARCH_HAS_RESET_CONTROLLER
189 select DMA_NONCOHERENT
196 select SYS_HAS_CPU_MIPS32_R2
197 select SYS_HAS_EARLY_PRINTK
198 select SYS_SUPPORTS_32BIT_KERNEL
199 select SYS_SUPPORTS_BIG_ENDIAN
200 select SYS_SUPPORTS_MIPS16
201 select SYS_SUPPORTS_ZBOOT_UART_PROM
203 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
205 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
208 bool "Broadcom Generic BMIPS kernel"
210 select NO_EXCEPT_FILL
216 select BCM6345_L1_IRQ
217 select BCM7038_L1_IRQ
218 select BCM7120_L2_IRQ
219 select BRCMSTB_L2_IRQ
221 select DMA_NONCOHERENT
222 select SYS_SUPPORTS_32BIT_KERNEL
223 select SYS_SUPPORTS_LITTLE_ENDIAN
224 select SYS_SUPPORTS_BIG_ENDIAN
225 select SYS_SUPPORTS_HIGHMEM
226 select SYS_HAS_CPU_BMIPS32_3300
227 select SYS_HAS_CPU_BMIPS4350
228 select SYS_HAS_CPU_BMIPS4380
229 select SYS_HAS_CPU_BMIPS5000
231 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
232 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
233 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
234 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
235 select HARDIRQS_SW_RESEND
237 Build a generic DT-based kernel image that boots on select
238 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
239 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
240 must be set appropriately for your board.
243 bool "Broadcom BCM47XX based boards"
247 select DMA_NONCOHERENT
250 select SYS_HAS_CPU_MIPS32_R1
251 select NO_EXCEPT_FILL
252 select SYS_SUPPORTS_32BIT_KERNEL
253 select SYS_SUPPORTS_LITTLE_ENDIAN
254 select SYS_SUPPORTS_MIPS16
255 select SYS_SUPPORTS_ZBOOT
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"
344 select ARCH_MIGHT_HAVE_PC_PARPORT
345 select ARCH_MIGHT_HAVE_PC_SERIO
348 select ARCH_MAY_HAVE_PC_FDC
351 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
352 select GENERIC_ISA_DMA
353 select HAVE_PCSPKR_PLATFORM
358 select SYS_HAS_CPU_R4X00
359 select SYS_SUPPORTS_32BIT_KERNEL
360 select SYS_SUPPORTS_64BIT_KERNEL
361 select SYS_SUPPORTS_100HZ
363 This a family of machines based on the MIPS R4030 chipset which was
364 used by several vendors to build RISC/os and Windows NT workstations.
365 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
366 Olivetti M700-10 workstations.
369 bool "Ingenic SoC based machines"
370 select SYS_SUPPORTS_32BIT_KERNEL
371 select SYS_SUPPORTS_LITTLE_ENDIAN
372 select SYS_SUPPORTS_ZBOOT_UART16550
373 select DMA_NONCOHERENT
378 select GENERIC_IRQ_CHIP
384 bool "Lantiq based platforms"
385 select DMA_NONCOHERENT
389 select SYS_HAS_CPU_MIPS32_R1
390 select SYS_HAS_CPU_MIPS32_R2
391 select SYS_SUPPORTS_BIG_ENDIAN
392 select SYS_SUPPORTS_32BIT_KERNEL
393 select SYS_SUPPORTS_MIPS16
394 select SYS_SUPPORTS_MULTITHREADING
395 select SYS_SUPPORTS_VPE_LOADER
396 select SYS_HAS_EARLY_PRINTK
403 select PINCTRL_LANTIQ
404 select ARCH_HAS_RESET_CONTROLLER
405 select RESET_CONTROLLER
408 bool "LASAT Networks platforms"
412 select DMA_NONCOHERENT
413 select SYS_HAS_EARLY_PRINTK
416 select PCI_GT64XXX_PCI0
418 select R5000_CPU_SCACHE
419 select SYS_HAS_CPU_R5000
420 select SYS_SUPPORTS_32BIT_KERNEL
421 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
422 select SYS_SUPPORTS_LITTLE_ENDIAN
424 config MACH_LOONGSON32
425 bool "Loongson-1 family of machines"
426 select SYS_SUPPORTS_ZBOOT
428 This enables support for the Loongson-1 family of machines.
430 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
431 the Institute of Computing Technology (ICT), Chinese Academy of
434 config MACH_LOONGSON64
435 bool "Loongson-2/3 family of machines"
436 select ARCH_HAS_PHYS_TO_DMA
437 select SYS_SUPPORTS_ZBOOT
439 This enables the support of Loongson-2/3 family of machines.
441 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
442 family of multi-core CPUs. They are both 64-bit general-purpose
443 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
444 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
445 in the People's Republic of China. The chief architect is Professor
448 config MACH_PISTACHIO
449 bool "IMG Pistachio SoC based boards"
453 select CLKSRC_MIPS_GIC
456 select DMA_NONCOHERENT
461 select MIPS_CPU_SCACHE
465 select SYS_HAS_CPU_MIPS32_R2
466 select SYS_SUPPORTS_32BIT_KERNEL
467 select SYS_SUPPORTS_LITTLE_ENDIAN
468 select SYS_SUPPORTS_MIPS_CPS
469 select SYS_SUPPORTS_MULTITHREADING
470 select SYS_SUPPORTS_RELOCATABLE
471 select SYS_SUPPORTS_ZBOOT
472 select SYS_HAS_EARLY_PRINTK
473 select USE_GENERIC_EARLY_PRINTK_8250
476 This enables support for the IMG Pistachio SoC platform.
479 bool "MIPS Malta board"
480 select ARCH_MAY_HAVE_PC_FDC
481 select ARCH_MIGHT_HAVE_PC_PARPORT
482 select ARCH_MIGHT_HAVE_PC_SERIO
488 select CLKSRC_MIPS_GIC
490 select DMA_MAYBE_COHERENT
491 select GENERIC_ISA_DMA
492 select HAVE_PCSPKR_PLATFORM
499 select MIPS_CPU_SCACHE
500 select MIPS_L1_CACHE_SHIFT_6
501 select PCI_GT64XXX_PCI0
505 select SYS_HAS_CPU_MIPS32_R1
506 select SYS_HAS_CPU_MIPS32_R2
507 select SYS_HAS_CPU_MIPS32_R3_5
508 select SYS_HAS_CPU_MIPS32_R5
509 select SYS_HAS_CPU_MIPS32_R6
510 select SYS_HAS_CPU_MIPS64_R1
511 select SYS_HAS_CPU_MIPS64_R2
512 select SYS_HAS_CPU_MIPS64_R6
513 select SYS_HAS_CPU_NEVADA
514 select SYS_HAS_CPU_RM7000
515 select SYS_SUPPORTS_32BIT_KERNEL
516 select SYS_SUPPORTS_64BIT_KERNEL
517 select SYS_SUPPORTS_BIG_ENDIAN
518 select SYS_SUPPORTS_HIGHMEM
519 select SYS_SUPPORTS_LITTLE_ENDIAN
520 select SYS_SUPPORTS_MICROMIPS
521 select SYS_SUPPORTS_MIPS_CMP
522 select SYS_SUPPORTS_MIPS_CPS
523 select SYS_SUPPORTS_MIPS16
524 select SYS_SUPPORTS_MULTITHREADING
525 select SYS_SUPPORTS_SMARTMIPS
526 select SYS_SUPPORTS_VPE_LOADER
527 select SYS_SUPPORTS_ZBOOT
528 select SYS_SUPPORTS_RELOCATABLE
531 select ZONE_DMA32 if 64BIT
535 This enables support for the MIPS Technologies Malta evaluation
539 bool "Microchip PIC32 Family"
541 This enables support for the Microchip PIC32 family of platforms.
543 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
547 bool "NEC EMMA2RH Mark-eins board"
551 This enables support for the NEC Electronics Mark-eins boards.
554 bool "NEC VR4100 series based machines"
557 select SYS_HAS_CPU_VR41XX
558 select SYS_SUPPORTS_MIPS16
562 bool "NXP STB220 board"
565 Support for NXP Semiconductors STB220 Development Board.
572 Support for NXP Semiconductors STB225 Development Board.
575 bool "PMC-Sierra MSP chipsets"
578 select DMA_NONCOHERENT
580 select NO_EXCEPT_FILL
582 select SYS_HAS_CPU_MIPS32_R1
583 select SYS_HAS_CPU_MIPS32_R2
584 select SYS_SUPPORTS_32BIT_KERNEL
585 select SYS_SUPPORTS_BIG_ENDIAN
586 select SYS_SUPPORTS_MIPS16
589 select SERIAL_8250_CONSOLE
590 select USB_EHCI_BIG_ENDIAN_MMIO
591 select USB_EHCI_BIG_ENDIAN_DESC
593 This adds support for the PMC-Sierra family of Multi-Service
594 Processor System-On-A-Chips. These parts include a number
595 of integrated peripherals, interfaces and DSPs in addition to
596 a variety of MIPS cores.
599 bool "Ralink based machines"
603 select DMA_NONCOHERENT
606 select SYS_HAS_CPU_MIPS32_R1
607 select SYS_HAS_CPU_MIPS32_R2
608 select SYS_SUPPORTS_32BIT_KERNEL
609 select SYS_SUPPORTS_LITTLE_ENDIAN
610 select SYS_SUPPORTS_MIPS16
611 select SYS_HAS_EARLY_PRINTK
613 select ARCH_HAS_RESET_CONTROLLER
614 select RESET_CONTROLLER
617 bool "SGI IP22 (Indy/Indigo2)"
620 select ARCH_MIGHT_HAVE_PC_SERIO
624 select DEFAULT_SGI_PARTITION
625 select DMA_NONCOHERENT
629 select IP22_CPU_SCACHE
631 select GENERIC_ISA_DMA_SUPPORT_BROKEN
633 select SGI_HAS_INDYDOG
639 select SYS_HAS_CPU_R4X00
640 select SYS_HAS_CPU_R5000
642 # Disable EARLY_PRINTK for now since it leads to overwritten prom
643 # memory during early boot on some machines.
645 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
646 # for a more details discussion
648 # select SYS_HAS_EARLY_PRINTK
649 select SYS_SUPPORTS_32BIT_KERNEL
650 select SYS_SUPPORTS_64BIT_KERNEL
651 select SYS_SUPPORTS_BIG_ENDIAN
652 select MIPS_L1_CACHE_SHIFT_7
654 This are the SGI Indy, Challenge S and Indigo2, as well as certain
655 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
656 that runs on these, say Y here.
659 bool "SGI IP27 (Origin200/2000)"
663 select DEFAULT_SGI_PARTITION
665 select SYS_HAS_EARLY_PRINTK
667 select NR_CPUS_DEFAULT_64
668 select SYS_HAS_CPU_R10000
669 select SYS_SUPPORTS_64BIT_KERNEL
670 select SYS_SUPPORTS_BIG_ENDIAN
671 select SYS_SUPPORTS_NUMA
672 select SYS_SUPPORTS_SMP
673 select MIPS_L1_CACHE_SHIFT_7
675 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
676 workstations. To compile a Linux kernel that runs on these, say Y
680 bool "SGI IP28 (Indigo2 R10k)"
683 select ARCH_MIGHT_HAVE_PC_SERIO
687 select DEFAULT_SGI_PARTITION
688 select DMA_NONCOHERENT
689 select GENERIC_ISA_DMA_SUPPORT_BROKEN
695 select SGI_HAS_INDYDOG
701 select SYS_HAS_CPU_R10000
703 # Disable EARLY_PRINTK for now since it leads to overwritten prom
704 # memory during early boot on some machines.
706 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
707 # for a more details discussion
709 # select SYS_HAS_EARLY_PRINTK
710 select SYS_SUPPORTS_64BIT_KERNEL
711 select SYS_SUPPORTS_BIG_ENDIAN
712 select MIPS_L1_CACHE_SHIFT_7
714 This is the SGI Indigo2 with R10000 processor. To compile a Linux
715 kernel that runs on these, say Y here.
724 select DMA_NONCOHERENT
727 select R5000_CPU_SCACHE
728 select RM7000_CPU_SCACHE
729 select SYS_HAS_CPU_R5000
730 select SYS_HAS_CPU_R10000 if BROKEN
731 select SYS_HAS_CPU_RM7000
732 select SYS_HAS_CPU_NEVADA
733 select SYS_SUPPORTS_64BIT_KERNEL
734 select SYS_SUPPORTS_BIG_ENDIAN
736 If you want this kernel to run on SGI O2 workstation, say Y here.
739 bool "Sibyte BCM91120C-CRhine"
742 select SIBYTE_BCM1120
744 select SYS_HAS_CPU_SB1
745 select SYS_SUPPORTS_BIG_ENDIAN
746 select SYS_SUPPORTS_LITTLE_ENDIAN
749 bool "Sibyte BCM91120x-Carmel"
752 select SIBYTE_BCM1120
754 select SYS_HAS_CPU_SB1
755 select SYS_SUPPORTS_BIG_ENDIAN
756 select SYS_SUPPORTS_LITTLE_ENDIAN
759 bool "Sibyte BCM91125C-CRhone"
762 select SIBYTE_BCM1125
764 select SYS_HAS_CPU_SB1
765 select SYS_SUPPORTS_BIG_ENDIAN
766 select SYS_SUPPORTS_HIGHMEM
767 select SYS_SUPPORTS_LITTLE_ENDIAN
770 bool "Sibyte BCM91125E-Rhone"
773 select SIBYTE_BCM1125H
775 select SYS_HAS_CPU_SB1
776 select SYS_SUPPORTS_BIG_ENDIAN
777 select SYS_SUPPORTS_LITTLE_ENDIAN
780 bool "Sibyte BCM91250A-SWARM"
783 select HAVE_PATA_PLATFORM
786 select SYS_HAS_CPU_SB1
787 select SYS_SUPPORTS_BIG_ENDIAN
788 select SYS_SUPPORTS_HIGHMEM
789 select SYS_SUPPORTS_LITTLE_ENDIAN
790 select ZONE_DMA32 if 64BIT
792 config SIBYTE_LITTLESUR
793 bool "Sibyte BCM91250C2-LittleSur"
796 select HAVE_PATA_PLATFORM
799 select SYS_HAS_CPU_SB1
800 select SYS_SUPPORTS_BIG_ENDIAN
801 select SYS_SUPPORTS_HIGHMEM
802 select SYS_SUPPORTS_LITTLE_ENDIAN
804 config SIBYTE_SENTOSA
805 bool "Sibyte BCM91250E-Sentosa"
810 select SYS_HAS_CPU_SB1
811 select SYS_SUPPORTS_BIG_ENDIAN
812 select SYS_SUPPORTS_LITTLE_ENDIAN
815 bool "Sibyte BCM91480B-BigSur"
818 select NR_CPUS_DEFAULT_4
819 select SIBYTE_BCM1x80
821 select SYS_HAS_CPU_SB1
822 select SYS_SUPPORTS_BIG_ENDIAN
823 select SYS_SUPPORTS_HIGHMEM
824 select SYS_SUPPORTS_LITTLE_ENDIAN
825 select ZONE_DMA32 if 64BIT
828 bool "SNI RM200/300/400"
829 select FW_ARC if CPU_LITTLE_ENDIAN
830 select FW_ARC32 if CPU_LITTLE_ENDIAN
831 select FW_SNIPROM if CPU_BIG_ENDIAN
832 select ARCH_MAY_HAVE_PC_FDC
833 select ARCH_MIGHT_HAVE_PC_PARPORT
834 select ARCH_MIGHT_HAVE_PC_SERIO
838 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
839 select DMA_NONCOHERENT
840 select GENERIC_ISA_DMA
841 select HAVE_PCSPKR_PLATFORM
848 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
849 select SYS_HAS_CPU_R4X00
850 select SYS_HAS_CPU_R5000
851 select SYS_HAS_CPU_R10000
852 select R5000_CPU_SCACHE
853 select SYS_HAS_EARLY_PRINTK
854 select SYS_SUPPORTS_32BIT_KERNEL
855 select SYS_SUPPORTS_64BIT_KERNEL
856 select SYS_SUPPORTS_BIG_ENDIAN
857 select SYS_SUPPORTS_HIGHMEM
858 select SYS_SUPPORTS_LITTLE_ENDIAN
860 The SNI RM200/300/400 are MIPS-based machines manufactured by
861 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
862 Technology and now in turn merged with Fujitsu. Say Y here to
863 support this machine type.
866 bool "Toshiba TX39 series based machines"
869 bool "Toshiba TX49 series based machines"
871 config MIKROTIK_RB532
872 bool "Mikrotik RB532 boards"
875 select DMA_NONCOHERENT
878 select SYS_HAS_CPU_MIPS32_R1
879 select SYS_SUPPORTS_32BIT_KERNEL
880 select SYS_SUPPORTS_LITTLE_ENDIAN
884 select MIPS_L1_CACHE_SHIFT_4
886 Support the Mikrotik(tm) RouterBoard 532 series,
887 based on the IDT RC32434 SoC.
889 config CAVIUM_OCTEON_SOC
890 bool "Cavium Networks Octeon SoC based boards"
892 select ARCH_HAS_PHYS_TO_DMA
893 select ARCH_PHYS_ADDR_T_64BIT
895 select SYS_SUPPORTS_64BIT_KERNEL
896 select SYS_SUPPORTS_BIG_ENDIAN
898 select EDAC_ATOMIC_SCRUB
899 select SYS_SUPPORTS_LITTLE_ENDIAN
900 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
901 select SYS_HAS_EARLY_PRINTK
902 select SYS_HAS_CPU_CAVIUM_OCTEON
909 select ARCH_SPARSEMEM_ENABLE
910 select SYS_SUPPORTS_SMP
911 select NR_CPUS_DEFAULT_64
912 select MIPS_NR_CPU_NR_MAP_1024
914 select MTD_COMPLEX_MAPPINGS
915 select SYS_SUPPORTS_RELOCATABLE
917 This option supports all of the Octeon reference boards from Cavium
918 Networks. It builds a kernel that dynamically determines the Octeon
919 CPU type and supports all known board reference implementations.
920 Some of the supported boards are:
927 Say Y here for most Octeon reference boards.
930 bool "Netlogic XLR/XLS based systems"
933 select SYS_HAS_CPU_XLR
934 select SYS_SUPPORTS_SMP
937 select SYS_SUPPORTS_32BIT_KERNEL
938 select SYS_SUPPORTS_64BIT_KERNEL
939 select ARCH_PHYS_ADDR_T_64BIT
940 select SYS_SUPPORTS_BIG_ENDIAN
941 select SYS_SUPPORTS_HIGHMEM
943 select NR_CPUS_DEFAULT_32
947 select ZONE_DMA32 if 64BIT
949 select SYS_HAS_EARLY_PRINTK
950 select SYS_SUPPORTS_ZBOOT
951 select SYS_SUPPORTS_ZBOOT_UART16550
953 Support for systems based on Netlogic XLR and XLS processors.
954 Say Y here if you have a XLR or XLS based board.
957 bool "Netlogic XLP based systems"
960 select SYS_HAS_CPU_XLP
961 select SYS_SUPPORTS_SMP
963 select SYS_SUPPORTS_32BIT_KERNEL
964 select SYS_SUPPORTS_64BIT_KERNEL
965 select ARCH_PHYS_ADDR_T_64BIT
967 select SYS_SUPPORTS_BIG_ENDIAN
968 select SYS_SUPPORTS_LITTLE_ENDIAN
969 select SYS_SUPPORTS_HIGHMEM
971 select NR_CPUS_DEFAULT_32
975 select ZONE_DMA32 if 64BIT
977 select SYS_HAS_EARLY_PRINTK
979 select SYS_SUPPORTS_ZBOOT
980 select SYS_SUPPORTS_ZBOOT_UART16550
982 This board is based on Netlogic XLP Processor.
983 Say Y here if you have a XLP based board.
986 bool "Para-Virtualized guest system"
990 select SYS_SUPPORTS_64BIT_KERNEL
991 select SYS_SUPPORTS_32BIT_KERNEL
992 select SYS_SUPPORTS_BIG_ENDIAN
993 select SYS_SUPPORTS_SMP
994 select NR_CPUS_DEFAULT_4
995 select SYS_HAS_EARLY_PRINTK
996 select SYS_HAS_CPU_MIPS32_R2
997 select SYS_HAS_CPU_MIPS64_R2
998 select SYS_HAS_CPU_CAVIUM_OCTEON
1000 select SWAP_IO_SPACE
1002 This option supports guest running under ????
1006 source "arch/mips/alchemy/Kconfig"
1007 source "arch/mips/ath25/Kconfig"
1008 source "arch/mips/ath79/Kconfig"
1009 source "arch/mips/bcm47xx/Kconfig"
1010 source "arch/mips/bcm63xx/Kconfig"
1011 source "arch/mips/bmips/Kconfig"
1012 source "arch/mips/generic/Kconfig"
1013 source "arch/mips/jazz/Kconfig"
1014 source "arch/mips/jz4740/Kconfig"
1015 source "arch/mips/lantiq/Kconfig"
1016 source "arch/mips/lasat/Kconfig"
1017 source "arch/mips/pic32/Kconfig"
1018 source "arch/mips/pistachio/Kconfig"
1019 source "arch/mips/pmcs-msp71xx/Kconfig"
1020 source "arch/mips/ralink/Kconfig"
1021 source "arch/mips/sgi-ip27/Kconfig"
1022 source "arch/mips/sibyte/Kconfig"
1023 source "arch/mips/txx9/Kconfig"
1024 source "arch/mips/vr41xx/Kconfig"
1025 source "arch/mips/cavium-octeon/Kconfig"
1026 source "arch/mips/loongson32/Kconfig"
1027 source "arch/mips/loongson64/Kconfig"
1028 source "arch/mips/netlogic/Kconfig"
1029 source "arch/mips/paravirt/Kconfig"
1033 config RWSEM_GENERIC_SPINLOCK
1037 config RWSEM_XCHGADD_ALGORITHM
1040 config GENERIC_HWEIGHT
1044 config GENERIC_CALIBRATE_DELAY
1048 config SCHED_OMIT_FRAME_POINTER
1053 # Select some configuration options automatically based on user selections.
1058 config ARCH_MAY_HAVE_PC_FDC
1094 config MIPS_CLOCK_VSYSCALL
1095 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1104 config ARCH_DMA_ADDR_T_64BIT
1105 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1107 config ARCH_SUPPORTS_UPROBES
1110 config DMA_MAYBE_COHERENT
1111 select DMA_NONCOHERENT
1114 config DMA_PERDEV_COHERENT
1116 select DMA_MAYBE_COHERENT
1121 config DMA_NONCOHERENT
1123 select NEED_DMA_MAP_STATE
1125 config NEED_DMA_MAP_STATE
1128 config SYS_HAS_EARLY_PRINTK
1131 config SYS_SUPPORTS_HOTPLUG_CPU
1134 config MIPS_BONITO64
1149 config NO_IOPORT_MAP
1155 config GENERIC_ISA_DMA
1157 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1160 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1162 select GENERIC_ISA_DMA
1167 config HOLES_IN_ZONE
1170 config SYS_SUPPORTS_RELOCATABLE
1173 Selected if the platform supports relocating the kernel.
1174 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1175 to allow access to command line and entropy sources.
1177 config MIPS_CBPF_JIT
1179 depends on BPF_JIT && HAVE_CBPF_JIT
1181 config MIPS_EBPF_JIT
1183 depends on BPF_JIT && HAVE_EBPF_JIT
1187 # Endianness selection. Sufficiently obscure so many users don't know what to
1188 # answer,so we try hard to limit the available choices. Also the use of a
1189 # choice statement should be more obvious to the user.
1192 prompt "Endianness selection"
1194 Some MIPS machines can be configured for either little or big endian
1195 byte order. These modes require different kernels and a different
1196 Linux distribution. In general there is one preferred byteorder for a
1197 particular system but some systems are just as commonly used in the
1198 one or the other endianness.
1200 config CPU_BIG_ENDIAN
1202 depends on SYS_SUPPORTS_BIG_ENDIAN
1204 config CPU_LITTLE_ENDIAN
1205 bool "Little endian"
1206 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1213 config SYS_SUPPORTS_APM_EMULATION
1216 config SYS_SUPPORTS_BIG_ENDIAN
1219 config SYS_SUPPORTS_LITTLE_ENDIAN
1222 config SYS_SUPPORTS_HUGETLBFS
1224 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1227 config MIPS_HUGE_TLB_SUPPORT
1228 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1245 config PCI_GT64XXX_PCI0
1248 config NO_EXCEPT_FILL
1255 select DMA_NONCOHERENT
1257 select SWAP_IO_SPACE
1258 select SYS_HAS_CPU_R5500
1259 select SYS_SUPPORTS_32BIT_KERNEL
1260 select SYS_SUPPORTS_64BIT_KERNEL
1261 select SYS_SUPPORTS_BIG_ENDIAN
1268 select DMA_NONCOHERENT
1269 select SYS_HAS_CPU_MIPS32_R2
1270 select SYS_SUPPORTS_32BIT_KERNEL
1271 select SYS_SUPPORTS_LITTLE_ENDIAN
1272 select SYS_SUPPORTS_BIG_ENDIAN
1273 select SYS_SUPPORTS_MIPS16
1274 select CPU_MIPSR2_IRQ_VI
1283 config SWAP_IO_SPACE
1286 config SGI_HAS_INDYDOG
1298 config SGI_HAS_ZILOG
1301 config SGI_HAS_I8042
1304 config DEFAULT_SGI_PARTITION
1316 config MIPS_L1_CACHE_SHIFT_4
1319 config MIPS_L1_CACHE_SHIFT_5
1322 config MIPS_L1_CACHE_SHIFT_6
1325 config MIPS_L1_CACHE_SHIFT_7
1328 config MIPS_L1_CACHE_SHIFT
1330 default "7" if MIPS_L1_CACHE_SHIFT_7
1331 default "6" if MIPS_L1_CACHE_SHIFT_6
1332 default "5" if MIPS_L1_CACHE_SHIFT_5
1333 default "4" if MIPS_L1_CACHE_SHIFT_4
1336 config HAVE_STD_PC_SERIAL_PORT
1340 bool "ARC console support"
1341 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1345 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1350 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1359 menu "CPU selection"
1365 config CPU_LOONGSON3
1366 bool "Loongson 3 CPU"
1367 depends on SYS_HAS_CPU_LOONGSON3
1368 select CPU_SUPPORTS_64BIT_KERNEL
1369 select CPU_SUPPORTS_HIGHMEM
1370 select CPU_SUPPORTS_HUGEPAGES
1371 select WEAK_ORDERING
1372 select WEAK_REORDERING_BEYOND_LLSC
1373 select MIPS_PGD_C0_CONTEXT
1374 select MIPS_L1_CACHE_SHIFT_6
1377 The Loongson 3 processor implements the MIPS64R2 instruction
1378 set with many extensions.
1380 config LOONGSON3_ENHANCEMENT
1381 bool "New Loongson 3 CPU Enhancements"
1384 select CPU_HAS_PREFETCH
1385 depends on CPU_LOONGSON3
1387 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1388 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1389 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1390 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1391 Fast TLB refill support, etc.
1393 This option enable those enhancements which are not probed at run
1394 time. If you want a generic kernel to run on all Loongson 3 machines,
1395 please say 'N' here. If you want a high-performance kernel to run on
1396 new Loongson 3 machines only, please say 'Y' here.
1398 config CPU_LOONGSON2E
1400 depends on SYS_HAS_CPU_LOONGSON2E
1401 select CPU_LOONGSON2
1403 The Loongson 2E processor implements the MIPS III instruction set
1404 with many extensions.
1406 It has an internal FPGA northbridge, which is compatible to
1409 config CPU_LOONGSON2F
1411 depends on SYS_HAS_CPU_LOONGSON2F
1412 select CPU_LOONGSON2
1415 The Loongson 2F processor implements the MIPS III instruction set
1416 with many extensions.
1418 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1419 have a similar programming interface with FPGA northbridge used in
1422 config CPU_LOONGSON1B
1424 depends on SYS_HAS_CPU_LOONGSON1B
1425 select CPU_LOONGSON1
1426 select LEDS_GPIO_REGISTER
1428 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1429 release 2 instruction set.
1431 config CPU_LOONGSON1C
1433 depends on SYS_HAS_CPU_LOONGSON1C
1434 select CPU_LOONGSON1
1435 select LEDS_GPIO_REGISTER
1437 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1438 release 2 instruction set.
1440 config CPU_MIPS32_R1
1441 bool "MIPS32 Release 1"
1442 depends on SYS_HAS_CPU_MIPS32_R1
1443 select CPU_HAS_PREFETCH
1444 select CPU_SUPPORTS_32BIT_KERNEL
1445 select CPU_SUPPORTS_HIGHMEM
1447 Choose this option to build a kernel for release 1 or later of the
1448 MIPS32 architecture. Most modern embedded systems with a 32-bit
1449 MIPS processor are based on a MIPS32 processor. If you know the
1450 specific type of processor in your system, choose those that one
1451 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1452 Release 2 of the MIPS32 architecture is available since several
1453 years so chances are you even have a MIPS32 Release 2 processor
1454 in which case you should choose CPU_MIPS32_R2 instead for better
1457 config CPU_MIPS32_R2
1458 bool "MIPS32 Release 2"
1459 depends on SYS_HAS_CPU_MIPS32_R2
1460 select CPU_HAS_PREFETCH
1461 select CPU_SUPPORTS_32BIT_KERNEL
1462 select CPU_SUPPORTS_HIGHMEM
1463 select CPU_SUPPORTS_MSA
1466 Choose this option to build a kernel for release 2 or later of the
1467 MIPS32 architecture. Most modern embedded systems with a 32-bit
1468 MIPS processor are based on a MIPS32 processor. If you know the
1469 specific type of processor in your system, choose those that one
1470 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1472 config CPU_MIPS32_R6
1473 bool "MIPS32 Release 6"
1474 depends on SYS_HAS_CPU_MIPS32_R6
1475 select CPU_HAS_PREFETCH
1476 select CPU_SUPPORTS_32BIT_KERNEL
1477 select CPU_SUPPORTS_HIGHMEM
1478 select CPU_SUPPORTS_MSA
1481 select MIPS_O32_FP64_SUPPORT
1483 Choose this option to build a kernel for release 6 or later of the
1484 MIPS32 architecture. New MIPS processors, starting with the Warrior
1485 family, are based on a MIPS32r6 processor. If you own an older
1486 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1488 config CPU_MIPS64_R1
1489 bool "MIPS64 Release 1"
1490 depends on SYS_HAS_CPU_MIPS64_R1
1491 select CPU_HAS_PREFETCH
1492 select CPU_SUPPORTS_32BIT_KERNEL
1493 select CPU_SUPPORTS_64BIT_KERNEL
1494 select CPU_SUPPORTS_HIGHMEM
1495 select CPU_SUPPORTS_HUGEPAGES
1497 Choose this option to build a kernel for release 1 or later of the
1498 MIPS64 architecture. Many modern embedded systems with a 64-bit
1499 MIPS processor are based on a MIPS64 processor. If you know the
1500 specific type of processor in your system, choose those that one
1501 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1502 Release 2 of the MIPS64 architecture is available since several
1503 years so chances are you even have a MIPS64 Release 2 processor
1504 in which case you should choose CPU_MIPS64_R2 instead for better
1507 config CPU_MIPS64_R2
1508 bool "MIPS64 Release 2"
1509 depends on SYS_HAS_CPU_MIPS64_R2
1510 select CPU_HAS_PREFETCH
1511 select CPU_SUPPORTS_32BIT_KERNEL
1512 select CPU_SUPPORTS_64BIT_KERNEL
1513 select CPU_SUPPORTS_HIGHMEM
1514 select CPU_SUPPORTS_HUGEPAGES
1515 select CPU_SUPPORTS_MSA
1518 Choose this option to build a kernel for release 2 or later of the
1519 MIPS64 architecture. Many modern embedded systems with a 64-bit
1520 MIPS processor are based on a MIPS64 processor. If you know the
1521 specific type of processor in your system, choose those that one
1522 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1524 config CPU_MIPS64_R6
1525 bool "MIPS64 Release 6"
1526 depends on SYS_HAS_CPU_MIPS64_R6
1527 select CPU_HAS_PREFETCH
1528 select CPU_SUPPORTS_32BIT_KERNEL
1529 select CPU_SUPPORTS_64BIT_KERNEL
1530 select CPU_SUPPORTS_HIGHMEM
1531 select CPU_SUPPORTS_MSA
1533 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1536 Choose this option to build a kernel for release 6 or later of the
1537 MIPS64 architecture. New MIPS processors, starting with the Warrior
1538 family, are based on a MIPS64r6 processor. If you own an older
1539 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1543 depends on SYS_HAS_CPU_R3000
1545 select CPU_SUPPORTS_32BIT_KERNEL
1546 select CPU_SUPPORTS_HIGHMEM
1548 Please make sure to pick the right CPU type. Linux/MIPS is not
1549 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1550 *not* work on R4000 machines and vice versa. However, since most
1551 of the supported machines have an R4000 (or similar) CPU, R4x00
1552 might be a safe bet. If the resulting kernel does not work,
1553 try to recompile with R3000.
1557 depends on SYS_HAS_CPU_TX39XX
1558 select CPU_SUPPORTS_32BIT_KERNEL
1562 depends on SYS_HAS_CPU_VR41XX
1563 select CPU_SUPPORTS_32BIT_KERNEL
1564 select CPU_SUPPORTS_64BIT_KERNEL
1566 The options selects support for the NEC VR4100 series of processors.
1567 Only choose this option if you have one of these processors as a
1568 kernel built with this option will not run on any other type of
1569 processor or vice versa.
1573 depends on SYS_HAS_CPU_R4300
1574 select CPU_SUPPORTS_32BIT_KERNEL
1575 select CPU_SUPPORTS_64BIT_KERNEL
1577 MIPS Technologies R4300-series processors.
1581 depends on SYS_HAS_CPU_R4X00
1582 select CPU_SUPPORTS_32BIT_KERNEL
1583 select CPU_SUPPORTS_64BIT_KERNEL
1584 select CPU_SUPPORTS_HUGEPAGES
1586 MIPS Technologies R4000-series processors other than 4300, including
1587 the R4000, R4400, R4600, and 4700.
1591 depends on SYS_HAS_CPU_TX49XX
1592 select CPU_HAS_PREFETCH
1593 select CPU_SUPPORTS_32BIT_KERNEL
1594 select CPU_SUPPORTS_64BIT_KERNEL
1595 select CPU_SUPPORTS_HUGEPAGES
1599 depends on SYS_HAS_CPU_R5000
1600 select CPU_SUPPORTS_32BIT_KERNEL
1601 select CPU_SUPPORTS_64BIT_KERNEL
1602 select CPU_SUPPORTS_HUGEPAGES
1604 MIPS Technologies R5000-series processors other than the Nevada.
1608 depends on SYS_HAS_CPU_R5432
1609 select CPU_SUPPORTS_32BIT_KERNEL
1610 select CPU_SUPPORTS_64BIT_KERNEL
1611 select CPU_SUPPORTS_HUGEPAGES
1615 depends on SYS_HAS_CPU_R5500
1616 select CPU_SUPPORTS_32BIT_KERNEL
1617 select CPU_SUPPORTS_64BIT_KERNEL
1618 select CPU_SUPPORTS_HUGEPAGES
1620 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1625 depends on SYS_HAS_CPU_NEVADA
1626 select CPU_SUPPORTS_32BIT_KERNEL
1627 select CPU_SUPPORTS_64BIT_KERNEL
1628 select CPU_SUPPORTS_HUGEPAGES
1630 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1634 depends on SYS_HAS_CPU_R8000
1635 select CPU_HAS_PREFETCH
1636 select CPU_SUPPORTS_64BIT_KERNEL
1638 MIPS Technologies R8000 processors. Note these processors are
1639 uncommon and the support for them is incomplete.
1643 depends on SYS_HAS_CPU_R10000
1644 select CPU_HAS_PREFETCH
1645 select CPU_SUPPORTS_32BIT_KERNEL
1646 select CPU_SUPPORTS_64BIT_KERNEL
1647 select CPU_SUPPORTS_HIGHMEM
1648 select CPU_SUPPORTS_HUGEPAGES
1650 MIPS Technologies R10000-series processors.
1654 depends on SYS_HAS_CPU_RM7000
1655 select CPU_HAS_PREFETCH
1656 select CPU_SUPPORTS_32BIT_KERNEL
1657 select CPU_SUPPORTS_64BIT_KERNEL
1658 select CPU_SUPPORTS_HIGHMEM
1659 select CPU_SUPPORTS_HUGEPAGES
1663 depends on SYS_HAS_CPU_SB1
1664 select CPU_SUPPORTS_32BIT_KERNEL
1665 select CPU_SUPPORTS_64BIT_KERNEL
1666 select CPU_SUPPORTS_HIGHMEM
1667 select CPU_SUPPORTS_HUGEPAGES
1668 select WEAK_ORDERING
1670 config CPU_CAVIUM_OCTEON
1671 bool "Cavium Octeon processor"
1672 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1673 select CPU_HAS_PREFETCH
1674 select CPU_SUPPORTS_64BIT_KERNEL
1675 select WEAK_ORDERING
1676 select CPU_SUPPORTS_HIGHMEM
1677 select CPU_SUPPORTS_HUGEPAGES
1678 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1679 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1680 select MIPS_L1_CACHE_SHIFT_7
1683 The Cavium Octeon processor is a highly integrated chip containing
1684 many ethernet hardware widgets for networking tasks. The processor
1685 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1686 Full details can be found at http://www.caviumnetworks.com.
1689 bool "Broadcom BMIPS"
1690 depends on SYS_HAS_CPU_BMIPS
1692 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1693 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1694 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1695 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1696 select CPU_SUPPORTS_32BIT_KERNEL
1697 select DMA_NONCOHERENT
1699 select SWAP_IO_SPACE
1700 select WEAK_ORDERING
1701 select CPU_SUPPORTS_HIGHMEM
1702 select CPU_HAS_PREFETCH
1703 select CPU_SUPPORTS_CPUFREQ
1704 select MIPS_EXTERNAL_TIMER
1706 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1709 bool "Netlogic XLR SoC"
1710 depends on SYS_HAS_CPU_XLR
1711 select CPU_SUPPORTS_32BIT_KERNEL
1712 select CPU_SUPPORTS_64BIT_KERNEL
1713 select CPU_SUPPORTS_HIGHMEM
1714 select CPU_SUPPORTS_HUGEPAGES
1715 select WEAK_ORDERING
1716 select WEAK_REORDERING_BEYOND_LLSC
1718 Netlogic Microsystems XLR/XLS processors.
1721 bool "Netlogic XLP SoC"
1722 depends on SYS_HAS_CPU_XLP
1723 select CPU_SUPPORTS_32BIT_KERNEL
1724 select CPU_SUPPORTS_64BIT_KERNEL
1725 select CPU_SUPPORTS_HIGHMEM
1726 select WEAK_ORDERING
1727 select WEAK_REORDERING_BEYOND_LLSC
1728 select CPU_HAS_PREFETCH
1730 select CPU_SUPPORTS_HUGEPAGES
1731 select MIPS_ASID_BITS_VARIABLE
1733 Netlogic Microsystems XLP processors.
1736 config CPU_MIPS32_3_5_FEATURES
1737 bool "MIPS32 Release 3.5 Features"
1738 depends on SYS_HAS_CPU_MIPS32_R3_5
1739 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1741 Choose this option to build a kernel for release 2 or later of the
1742 MIPS32 architecture including features from the 3.5 release such as
1743 support for Enhanced Virtual Addressing (EVA).
1745 config CPU_MIPS32_3_5_EVA
1746 bool "Enhanced Virtual Addressing (EVA)"
1747 depends on CPU_MIPS32_3_5_FEATURES
1751 Choose this option if you want to enable the Enhanced Virtual
1752 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1753 One of its primary benefits is an increase in the maximum size
1754 of lowmem (up to 3GB). If unsure, say 'N' here.
1756 config CPU_MIPS32_R5_FEATURES
1757 bool "MIPS32 Release 5 Features"
1758 depends on SYS_HAS_CPU_MIPS32_R5
1759 depends on CPU_MIPS32_R2
1761 Choose this option to build a kernel for release 2 or later of the
1762 MIPS32 architecture including features from release 5 such as
1763 support for Extended Physical Addressing (XPA).
1765 config CPU_MIPS32_R5_XPA
1766 bool "Extended Physical Addressing (XPA)"
1767 depends on CPU_MIPS32_R5_FEATURES
1769 depends on !PAGE_SIZE_4KB
1770 depends on SYS_SUPPORTS_HIGHMEM
1773 select ARCH_PHYS_ADDR_T_64BIT
1776 Choose this option if you want to enable the Extended Physical
1777 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1778 benefit is to increase physical addressing equal to or greater
1779 than 40 bits. Note that this has the side effect of turning on
1780 64-bit addressing which in turn makes the PTEs 64-bit in size.
1781 If unsure, say 'N' here.
1784 config CPU_NOP_WORKAROUNDS
1787 config CPU_JUMP_WORKAROUNDS
1790 config CPU_LOONGSON2F_WORKAROUNDS
1791 bool "Loongson 2F Workarounds"
1793 select CPU_NOP_WORKAROUNDS
1794 select CPU_JUMP_WORKAROUNDS
1796 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1797 require workarounds. Without workarounds the system may hang
1798 unexpectedly. For more information please refer to the gas
1799 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1801 Loongson 2F03 and later have fixed these issues and no workarounds
1802 are needed. The workarounds have no significant side effect on them
1803 but may decrease the performance of the system so this option should
1804 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1807 If unsure, please say Y.
1808 endif # CPU_LOONGSON2F
1810 config SYS_SUPPORTS_ZBOOT
1812 select HAVE_KERNEL_GZIP
1813 select HAVE_KERNEL_BZIP2
1814 select HAVE_KERNEL_LZ4
1815 select HAVE_KERNEL_LZMA
1816 select HAVE_KERNEL_LZO
1817 select HAVE_KERNEL_XZ
1819 config SYS_SUPPORTS_ZBOOT_UART16550
1821 select SYS_SUPPORTS_ZBOOT
1823 config SYS_SUPPORTS_ZBOOT_UART_PROM
1825 select SYS_SUPPORTS_ZBOOT
1827 config CPU_LOONGSON2
1829 select CPU_SUPPORTS_32BIT_KERNEL
1830 select CPU_SUPPORTS_64BIT_KERNEL
1831 select CPU_SUPPORTS_HIGHMEM
1832 select CPU_SUPPORTS_HUGEPAGES
1834 config CPU_LOONGSON1
1838 select CPU_HAS_PREFETCH
1839 select CPU_SUPPORTS_32BIT_KERNEL
1840 select CPU_SUPPORTS_HIGHMEM
1841 select CPU_SUPPORTS_CPUFREQ
1843 config CPU_BMIPS32_3300
1844 select SMP_UP if SMP
1847 config CPU_BMIPS4350
1849 select SYS_SUPPORTS_SMP
1850 select SYS_SUPPORTS_HOTPLUG_CPU
1852 config CPU_BMIPS4380
1854 select MIPS_L1_CACHE_SHIFT_6
1855 select SYS_SUPPORTS_SMP
1856 select SYS_SUPPORTS_HOTPLUG_CPU
1859 config CPU_BMIPS5000
1861 select MIPS_CPU_SCACHE
1862 select MIPS_L1_CACHE_SHIFT_7
1863 select SYS_SUPPORTS_SMP
1864 select SYS_SUPPORTS_HOTPLUG_CPU
1867 config SYS_HAS_CPU_LOONGSON3
1869 select CPU_SUPPORTS_CPUFREQ
1872 config SYS_HAS_CPU_LOONGSON2E
1875 config SYS_HAS_CPU_LOONGSON2F
1877 select CPU_SUPPORTS_CPUFREQ
1878 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1879 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1881 config SYS_HAS_CPU_LOONGSON1B
1884 config SYS_HAS_CPU_LOONGSON1C
1887 config SYS_HAS_CPU_MIPS32_R1
1890 config SYS_HAS_CPU_MIPS32_R2
1893 config SYS_HAS_CPU_MIPS32_R3_5
1896 config SYS_HAS_CPU_MIPS32_R5
1899 config SYS_HAS_CPU_MIPS32_R6
1902 config SYS_HAS_CPU_MIPS64_R1
1905 config SYS_HAS_CPU_MIPS64_R2
1908 config SYS_HAS_CPU_MIPS64_R6
1911 config SYS_HAS_CPU_R3000
1914 config SYS_HAS_CPU_TX39XX
1917 config SYS_HAS_CPU_VR41XX
1920 config SYS_HAS_CPU_R4300
1923 config SYS_HAS_CPU_R4X00
1926 config SYS_HAS_CPU_TX49XX
1929 config SYS_HAS_CPU_R5000
1932 config SYS_HAS_CPU_R5432
1935 config SYS_HAS_CPU_R5500
1938 config SYS_HAS_CPU_NEVADA
1941 config SYS_HAS_CPU_R8000
1944 config SYS_HAS_CPU_R10000
1947 config SYS_HAS_CPU_RM7000
1950 config SYS_HAS_CPU_SB1
1953 config SYS_HAS_CPU_CAVIUM_OCTEON
1956 config SYS_HAS_CPU_BMIPS
1959 config SYS_HAS_CPU_BMIPS32_3300
1961 select SYS_HAS_CPU_BMIPS
1963 config SYS_HAS_CPU_BMIPS4350
1965 select SYS_HAS_CPU_BMIPS
1967 config SYS_HAS_CPU_BMIPS4380
1969 select SYS_HAS_CPU_BMIPS
1971 config SYS_HAS_CPU_BMIPS5000
1973 select SYS_HAS_CPU_BMIPS
1975 config SYS_HAS_CPU_XLR
1978 config SYS_HAS_CPU_XLP
1981 config MIPS_MALTA_PM
1982 depends on MIPS_MALTA
1988 # CPU may reorder R->R, R->W, W->R, W->W
1989 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1991 config WEAK_ORDERING
1995 # CPU may reorder reads and writes beyond LL/SC
1996 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1998 config WEAK_REORDERING_BEYOND_LLSC
2003 # These two indicate any level of the MIPS32 and MIPS64 architecture
2007 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2011 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2014 # These two indicate the revision of the architecture, either Release 1 or Release 2
2018 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2022 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2028 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2030 select HAVE_ARCH_BITREVERSE
2031 select MIPS_ASID_BITS_VARIABLE
2032 select MIPS_CRC_SUPPORT
2041 config SYS_SUPPORTS_32BIT_KERNEL
2043 config SYS_SUPPORTS_64BIT_KERNEL
2045 config CPU_SUPPORTS_32BIT_KERNEL
2047 config CPU_SUPPORTS_64BIT_KERNEL
2049 config CPU_SUPPORTS_CPUFREQ
2051 config CPU_SUPPORTS_ADDRWINCFG
2053 config CPU_SUPPORTS_HUGEPAGES
2055 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2057 config MIPS_PGD_C0_CONTEXT
2059 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2062 # Set to y for ptrace access to watch registers.
2064 config HARDWARE_WATCHPOINTS
2066 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2071 prompt "Kernel code model"
2073 You should only select this option if you have a workload that
2074 actually benefits from 64-bit processing or if your machine has
2075 large memory. You will only be presented a single option in this
2076 menu if your system does not support both 32-bit and 64-bit kernels.
2079 bool "32-bit kernel"
2080 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2083 Select this option if you want to build a 32-bit kernel.
2086 bool "64-bit kernel"
2087 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2089 Select this option if you want to build a 64-bit kernel.
2094 bool "KVM Guest Kernel"
2095 depends on BROKEN_ON_SMP
2097 Select this option if building a guest kernel for KVM (Trap & Emulate)
2100 config KVM_GUEST_TIMER_FREQ
2101 int "Count/Compare Timer Frequency (MHz)"
2102 depends on KVM_GUEST
2105 Set this to non-zero if building a guest kernel for KVM to skip RTC
2106 emulation when determining guest CPU Frequency. Instead, the guest's
2107 timer frequency is specified directly.
2109 config MIPS_VA_BITS_48
2110 bool "48 bits virtual memory"
2113 Support a maximum at least 48 bits of application virtual
2114 memory. Default is 40 bits or less, depending on the CPU.
2115 For page sizes 16k and above, this option results in a small
2116 memory overhead for page tables. For 4k page size, a fourth
2117 level of page tables is added which imposes both a memory
2118 overhead as well as slower TLB fault handling.
2123 prompt "Kernel page size"
2124 default PAGE_SIZE_4KB
2126 config PAGE_SIZE_4KB
2128 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2130 This option select the standard 4kB Linux page size. On some
2131 R3000-family processors this is the only available page size. Using
2132 4kB page size will minimize memory consumption and is therefore
2133 recommended for low memory systems.
2135 config PAGE_SIZE_8KB
2137 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2138 depends on !MIPS_VA_BITS_48
2140 Using 8kB page size will result in higher performance kernel at
2141 the price of higher memory consumption. This option is available
2142 only on R8000 and cnMIPS processors. Note that you will need a
2143 suitable Linux distribution to support this.
2145 config PAGE_SIZE_16KB
2147 depends on !CPU_R3000 && !CPU_TX39XX
2149 Using 16kB page size will result in higher performance kernel at
2150 the price of higher memory consumption. This option is available on
2151 all non-R3000 family processors. Note that you will need a suitable
2152 Linux distribution to support this.
2154 config PAGE_SIZE_32KB
2156 depends on CPU_CAVIUM_OCTEON
2157 depends on !MIPS_VA_BITS_48
2159 Using 32kB page size will result in higher performance kernel at
2160 the price of higher memory consumption. This option is available
2161 only on cnMIPS cores. Note that you will need a suitable Linux
2162 distribution to support this.
2164 config PAGE_SIZE_64KB
2166 depends on !CPU_R3000 && !CPU_TX39XX
2168 Using 64kB page size will result in higher performance kernel at
2169 the price of higher memory consumption. This option is available on
2170 all non-R3000 family processor. Not that at the time of this
2171 writing this option is still high experimental.
2175 config FORCE_MAX_ZONEORDER
2176 int "Maximum zone order"
2177 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2178 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2179 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2180 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2181 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2182 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2186 The kernel memory allocator divides physically contiguous memory
2187 blocks into "zones", where each zone is a power of two number of
2188 pages. This option selects the largest power of two that the kernel
2189 keeps in the memory allocator. If you need to allocate very large
2190 blocks of physically contiguous memory, then you may need to
2191 increase this value.
2193 This config option is actually maximum order plus one. For example,
2194 a value of 11 means that the largest free memory block is 2^10 pages.
2196 The page size is not necessarily 4KB. Keep this in mind
2197 when choosing a value for this option.
2202 config IP22_CPU_SCACHE
2207 # Support for a MIPS32 / MIPS64 style S-caches
2209 config MIPS_CPU_SCACHE
2213 config R5000_CPU_SCACHE
2217 config RM7000_CPU_SCACHE
2221 config SIBYTE_DMA_PAGEOPS
2222 bool "Use DMA to clear/copy pages"
2225 Instead of using the CPU to zero and copy pages, use a Data Mover
2226 channel. These DMA channels are otherwise unused by the standard
2227 SiByte Linux port. Seems to give a small performance benefit.
2229 config CPU_HAS_PREFETCH
2232 config CPU_GENERIC_DUMP_TLB
2234 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
2238 default y if !(CPU_R3000 || CPU_TX39XX)
2240 config CPU_R4K_CACHE_TLB
2242 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2245 bool "MIPS MT SMP support (1 TC on each available VPE)"
2247 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2248 select CPU_MIPSR2_IRQ_VI
2249 select CPU_MIPSR2_IRQ_EI
2254 select SYS_SUPPORTS_SMP
2255 select SYS_SUPPORTS_SCHED_SMT
2256 select MIPS_PERF_SHARED_TC_COUNTERS
2258 This is a kernel model which is known as SMVP. This is supported
2259 on cores with the MT ASE and uses the available VPEs to implement
2260 virtual processors which supports SMP. This is equivalent to the
2261 Intel Hyperthreading feature. For further information go to
2262 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2268 bool "SMT (multithreading) scheduler support"
2269 depends on SYS_SUPPORTS_SCHED_SMT
2272 SMT scheduler support improves the CPU scheduler's decision making
2273 when dealing with MIPS MT enabled cores at a cost of slightly
2274 increased overhead in some places. If unsure say N here.
2276 config SYS_SUPPORTS_SCHED_SMT
2279 config SYS_SUPPORTS_MULTITHREADING
2282 config MIPS_MT_FPAFF
2283 bool "Dynamic FPU affinity for FP-intensive threads"
2285 depends on MIPS_MT_SMP
2287 config MIPSR2_TO_R6_EMULATOR
2288 bool "MIPS R2-to-R6 emulator"
2289 depends on CPU_MIPSR6
2292 Choose this option if you want to run non-R6 MIPS userland code.
2293 Even if you say 'Y' here, the emulator will still be disabled by
2294 default. You can enable it using the 'mipsr2emu' kernel option.
2295 The only reason this is a build-time option is to save ~14K from the
2298 config SYS_SUPPORTS_VPE_LOADER
2300 depends on SYS_SUPPORTS_MULTITHREADING
2302 Indicates that the platform supports the VPE loader, and provides
2305 config MIPS_VPE_LOADER
2306 bool "VPE loader support."
2307 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2308 select CPU_MIPSR2_IRQ_VI
2309 select CPU_MIPSR2_IRQ_EI
2312 Includes a loader for loading an elf relocatable object
2313 onto another VPE and running it.
2315 config MIPS_VPE_LOADER_CMP
2318 depends on MIPS_VPE_LOADER && MIPS_CMP
2320 config MIPS_VPE_LOADER_MT
2323 depends on MIPS_VPE_LOADER && !MIPS_CMP
2325 config MIPS_VPE_LOADER_TOM
2326 bool "Load VPE program into memory hidden from linux"
2327 depends on MIPS_VPE_LOADER
2330 The loader can use memory that is present but has been hidden from
2331 Linux using the kernel command line option "mem=xxMB". It's up to
2332 you to ensure the amount you put in the option and the space your
2333 program requires is less or equal to the amount physically present.
2335 config MIPS_VPE_APSP_API
2336 bool "Enable support for AP/SP API (RTLX)"
2337 depends on MIPS_VPE_LOADER
2339 config MIPS_VPE_APSP_API_CMP
2342 depends on MIPS_VPE_APSP_API && MIPS_CMP
2344 config MIPS_VPE_APSP_API_MT
2347 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2350 bool "MIPS CMP framework support (DEPRECATED)"
2351 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2354 select SYS_SUPPORTS_SMP
2355 select WEAK_ORDERING
2358 Select this if you are using a bootloader which implements the "CMP
2359 framework" protocol (ie. YAMON) and want your kernel to make use of
2360 its ability to start secondary CPUs.
2362 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2366 bool "MIPS Coherent Processing System support"
2367 depends on SYS_SUPPORTS_MIPS_CPS
2369 select MIPS_CPS_PM if HOTPLUG_CPU
2371 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2372 select SYS_SUPPORTS_HOTPLUG_CPU
2373 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2374 select SYS_SUPPORTS_SMP
2375 select WEAK_ORDERING
2377 Select this if you wish to run an SMP kernel across multiple cores
2378 within a MIPS Coherent Processing System. When this option is
2379 enabled the kernel will probe for other cores and boot them with
2380 no external assistance. It is safe to enable this when hardware
2381 support is unavailable.
2394 config SB1_PASS_2_WORKAROUNDS
2396 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2399 config SB1_PASS_2_1_WORKAROUNDS
2401 depends on CPU_SB1 && CPU_SB1_PASS_2
2405 config ARCH_PHYS_ADDR_T_64BIT
2409 prompt "SmartMIPS or microMIPS ASE support"
2411 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2414 Select this if you want neither microMIPS nor SmartMIPS support
2416 config CPU_HAS_SMARTMIPS
2417 depends on SYS_SUPPORTS_SMARTMIPS
2420 SmartMIPS is a extension of the MIPS32 architecture aimed at
2421 increased security at both hardware and software level for
2422 smartcards. Enabling this option will allow proper use of the
2423 SmartMIPS instructions by Linux applications. However a kernel with
2424 this option will not work on a MIPS core without SmartMIPS core. If
2425 you don't know you probably don't have SmartMIPS and should say N
2428 config CPU_MICROMIPS
2429 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2432 When this option is enabled the kernel will be built using the
2438 bool "Support for the MIPS SIMD Architecture"
2439 depends on CPU_SUPPORTS_MSA
2440 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2442 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2443 and a set of SIMD instructions to operate on them. When this option
2444 is enabled the kernel will support allocating & switching MSA
2445 vector register contexts. If you know that your kernel will only be
2446 running on CPUs which do not support MSA or that your userland will
2447 not be making use of it then you may wish to say N here to reduce
2448 the size & complexity of your kernel.
2462 # Vectored interrupt mode is an R2 feature
2464 config CPU_MIPSR2_IRQ_VI
2468 # Extended interrupt mode is an R2 feature
2470 config CPU_MIPSR2_IRQ_EI
2475 depends on !CPU_R3000
2481 config CPU_DADDI_WORKAROUNDS
2484 config CPU_R4000_WORKAROUNDS
2486 select CPU_R4400_WORKAROUNDS
2488 config CPU_R4400_WORKAROUNDS
2491 config MIPS_ASID_SHIFT
2493 default 6 if CPU_R3000 || CPU_TX39XX
2494 default 4 if CPU_R8000
2497 config MIPS_ASID_BITS
2499 default 0 if MIPS_ASID_BITS_VARIABLE
2500 default 6 if CPU_R3000 || CPU_TX39XX
2503 config MIPS_ASID_BITS_VARIABLE
2506 config MIPS_CRC_SUPPORT
2510 # - Highmem only makes sense for the 32-bit kernel.
2511 # - The current highmem code will only work properly on physically indexed
2512 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2513 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2514 # moment we protect the user and offer the highmem option only on machines
2515 # where it's known to be safe. This will not offer highmem on a few systems
2516 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2517 # indexed CPUs but we're playing safe.
2518 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2519 # know they might have memory configurations that could make use of highmem
2523 bool "High Memory Support"
2524 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2526 config CPU_SUPPORTS_HIGHMEM
2529 config SYS_SUPPORTS_HIGHMEM
2532 config SYS_SUPPORTS_SMARTMIPS
2535 config SYS_SUPPORTS_MICROMIPS
2538 config SYS_SUPPORTS_MIPS16
2541 This option must be set if a kernel might be executed on a MIPS16-
2542 enabled CPU even if MIPS16 is not actually being used. In other
2543 words, it makes the kernel MIPS16-tolerant.
2545 config CPU_SUPPORTS_MSA
2548 config ARCH_FLATMEM_ENABLE
2550 depends on !NUMA && !CPU_LOONGSON2
2552 config ARCH_DISCONTIGMEM_ENABLE
2554 default y if SGI_IP27
2556 Say Y to support efficient handling of discontiguous physical memory,
2557 for architectures which are either NUMA (Non-Uniform Memory Access)
2558 or have huge holes in the physical address space for other reasons.
2559 See <file:Documentation/vm/numa> for more.
2561 config ARCH_SPARSEMEM_ENABLE
2563 select SPARSEMEM_STATIC
2567 depends on SYS_SUPPORTS_NUMA
2569 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2570 Access). This option improves performance on systems with more
2571 than two nodes; on two node systems it is generally better to
2572 leave it disabled; on single node systems disable this option
2575 config SYS_SUPPORTS_NUMA
2579 bool "Relocatable kernel"
2580 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2582 This builds a kernel image that retains relocation information
2583 so it can be loaded someplace besides the default 1MB.
2584 The relocations make the kernel binary about 15% larger,
2585 but are discarded at runtime
2587 config RELOCATION_TABLE_SIZE
2588 hex "Relocation table size"
2589 depends on RELOCATABLE
2590 range 0x0 0x01000000
2591 default "0x00100000"
2593 A table of relocation data will be appended to the kernel binary
2594 and parsed at boot to fix up the relocated kernel.
2596 This option allows the amount of space reserved for the table to be
2597 adjusted, although the default of 1Mb should be ok in most cases.
2599 The build will fail and a valid size suggested if this is too small.
2601 If unsure, leave at the default value.
2603 config RANDOMIZE_BASE
2604 bool "Randomize the address of the kernel image"
2605 depends on RELOCATABLE
2607 Randomizes the physical and virtual address at which the
2608 kernel image is loaded, as a security feature that
2609 deters exploit attempts relying on knowledge of the location
2610 of kernel internals.
2612 Entropy is generated using any coprocessor 0 registers available.
2614 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2618 config RANDOMIZE_BASE_MAX_OFFSET
2619 hex "Maximum kASLR offset" if EXPERT
2620 depends on RANDOMIZE_BASE
2621 range 0x0 0x40000000 if EVA || 64BIT
2622 range 0x0 0x08000000
2623 default "0x01000000"
2625 When kASLR is active, this provides the maximum offset that will
2626 be applied to the kernel image. It should be set according to the
2627 amount of physical RAM available in the target system minus
2628 PHYSICAL_START and must be a power of 2.
2630 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2631 EVA or 64-bit. The default is 16Mb.
2636 depends on NEED_MULTIPLE_NODES
2638 config HW_PERF_EVENTS
2639 bool "Enable hardware performance counter support for perf events"
2640 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2643 Enable hardware performance counter support for perf events. If
2644 disabled, perf events will use software events only.
2649 bool "Multi-Processing support"
2650 depends on SYS_SUPPORTS_SMP
2652 This enables support for systems with more than one CPU. If you have
2653 a system with only one CPU, say N. If you have a system with more
2654 than one CPU, say Y.
2656 If you say N here, the kernel will run on uni- and multiprocessor
2657 machines, but will use only one CPU of a multiprocessor machine. If
2658 you say Y here, the kernel will run on many, but not all,
2659 uniprocessor machines. On a uniprocessor machine, the kernel
2660 will run faster if you say N here.
2662 People using multiprocessor machines who say Y here should also say
2663 Y to "Enhanced Real Time Clock Support", below.
2665 See also the SMP-HOWTO available at
2666 <http://www.tldp.org/docs.html#howto>.
2668 If you don't know what to do here, say N.
2671 bool "Support for hot-pluggable CPUs"
2672 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2674 Say Y here to allow turning CPUs off and on. CPUs can be
2675 controlled through /sys/devices/system/cpu.
2676 (Note: power management support will enable this option
2677 automatically on SMP systems. )
2678 Say N if you want to disable CPU hotplug.
2683 config SYS_SUPPORTS_MIPS_CMP
2686 config SYS_SUPPORTS_MIPS_CPS
2689 config SYS_SUPPORTS_SMP
2692 config NR_CPUS_DEFAULT_4
2695 config NR_CPUS_DEFAULT_8
2698 config NR_CPUS_DEFAULT_16
2701 config NR_CPUS_DEFAULT_32
2704 config NR_CPUS_DEFAULT_64
2708 int "Maximum number of CPUs (2-256)"
2711 default "4" if NR_CPUS_DEFAULT_4
2712 default "8" if NR_CPUS_DEFAULT_8
2713 default "16" if NR_CPUS_DEFAULT_16
2714 default "32" if NR_CPUS_DEFAULT_32
2715 default "64" if NR_CPUS_DEFAULT_64
2717 This allows you to specify the maximum number of CPUs which this
2718 kernel will support. The maximum supported value is 32 for 32-bit
2719 kernel and 64 for 64-bit kernels; the minimum value which makes
2720 sense is 1 for Qemu (useful only for kernel debugging purposes)
2721 and 2 for all others.
2723 This is purely to save memory - each supported CPU adds
2724 approximately eight kilobytes to the kernel image. For best
2725 performance should round up your number of processors to the next
2728 config MIPS_PERF_SHARED_TC_COUNTERS
2731 config MIPS_NR_CPU_NR_MAP_1024
2734 config MIPS_NR_CPU_NR_MAP
2737 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2738 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2741 # Timer Interrupt Frequency Configuration
2745 prompt "Timer frequency"
2748 Allows the configuration of the timer frequency.
2751 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2754 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2757 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2760 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2763 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2766 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2769 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2772 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2776 config SYS_SUPPORTS_24HZ
2779 config SYS_SUPPORTS_48HZ
2782 config SYS_SUPPORTS_100HZ
2785 config SYS_SUPPORTS_128HZ
2788 config SYS_SUPPORTS_250HZ
2791 config SYS_SUPPORTS_256HZ
2794 config SYS_SUPPORTS_1000HZ
2797 config SYS_SUPPORTS_1024HZ
2800 config SYS_SUPPORTS_ARBIT_HZ
2802 default y if !SYS_SUPPORTS_24HZ && \
2803 !SYS_SUPPORTS_48HZ && \
2804 !SYS_SUPPORTS_100HZ && \
2805 !SYS_SUPPORTS_128HZ && \
2806 !SYS_SUPPORTS_250HZ && \
2807 !SYS_SUPPORTS_256HZ && \
2808 !SYS_SUPPORTS_1000HZ && \
2809 !SYS_SUPPORTS_1024HZ
2815 default 100 if HZ_100
2816 default 128 if HZ_128
2817 default 250 if HZ_250
2818 default 256 if HZ_256
2819 default 1000 if HZ_1000
2820 default 1024 if HZ_1024
2823 def_bool HIGH_RES_TIMERS
2825 source "kernel/Kconfig.preempt"
2828 bool "Kexec system call"
2831 kexec is a system call that implements the ability to shutdown your
2832 current kernel, and to start another kernel. It is like a reboot
2833 but it is independent of the system firmware. And like a reboot
2834 you can start any kernel with it, not just Linux.
2836 The name comes from the similarity to the exec system call.
2838 It is an ongoing process to be certain the hardware in a machine
2839 is properly shutdown, so do not be surprised if this code does not
2840 initially work for you. As of this writing the exact hardware
2841 interface is strongly in flux, so no good recommendation can be
2845 bool "Kernel crash dumps"
2847 Generate crash dump after being started by kexec.
2848 This should be normally only set in special crash dump kernels
2849 which are loaded in the main kernel with kexec-tools into
2850 a specially reserved region and then later executed after
2851 a crash by kdump/kexec. The crash dump kernel must be compiled
2852 to a memory address not used by the main kernel or firmware using
2855 config PHYSICAL_START
2856 hex "Physical address where the kernel is loaded"
2857 default "0xffffffff84000000"
2858 depends on CRASH_DUMP
2860 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2861 If you plan to use kernel for capturing the crash dump change
2862 this value to start of the reserved region (the "X" value as
2863 specified in the "crashkernel=YM@XM" command line boot parameter
2864 passed to the panic-ed kernel).
2867 bool "Enable seccomp to safely compute untrusted bytecode"
2871 This kernel feature is useful for number crunching applications
2872 that may need to compute untrusted bytecode during their
2873 execution. By using pipes or other transports made available to
2874 the process as file descriptors supporting the read/write
2875 syscalls, it's possible to isolate those applications in
2876 their own address space using seccomp. Once seccomp is
2877 enabled via /proc/<pid>/seccomp, it cannot be disabled
2878 and the task is only allowed to execute a few safe syscalls
2879 defined by each seccomp mode.
2881 If unsure, say Y. Only embedded should say N here.
2883 config MIPS_O32_FP64_SUPPORT
2884 bool "Support for O32 binaries using 64-bit FP"
2885 depends on 32BIT || MIPS32_O32
2887 When this is enabled, the kernel will support use of 64-bit floating
2888 point registers with binaries using the O32 ABI along with the
2889 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2890 32-bit MIPS systems this support is at the cost of increasing the
2891 size and complexity of the compiled FPU emulator. Thus if you are
2892 running a MIPS32 system and know that none of your userland binaries
2893 will require 64-bit floating point, you may wish to reduce the size
2894 of your kernel & potentially improve FP emulation performance by
2897 Although binutils currently supports use of this flag the details
2898 concerning its effect upon the O32 ABI in userland are still being
2899 worked on. In order to avoid userland becoming dependant upon current
2900 behaviour before the details have been finalised, this option should
2901 be considered experimental and only enabled by those working upon
2909 select OF_EARLY_FLATTREE
2916 prompt "Kernel appended dtb support" if USE_OF
2917 default MIPS_NO_APPENDED_DTB
2919 config MIPS_NO_APPENDED_DTB
2922 Do not enable appended dtb support.
2924 config MIPS_ELF_APPENDED_DTB
2927 With this option, the boot code will look for a device tree binary
2928 DTB) included in the vmlinux ELF section .appended_dtb. By default
2929 it is empty and the DTB can be appended using binutils command
2932 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2934 This is meant as a backward compatiblity convenience for those
2935 systems with a bootloader that can't be upgraded to accommodate
2936 the documented boot protocol using a device tree.
2938 config MIPS_RAW_APPENDED_DTB
2939 bool "vmlinux.bin or vmlinuz.bin"
2941 With this option, the boot code will look for a device tree binary
2942 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2943 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2945 This is meant as a backward compatibility convenience for those
2946 systems with a bootloader that can't be upgraded to accommodate
2947 the documented boot protocol using a device tree.
2949 Beware that there is very little in terms of protection against
2950 this option being confused by leftover garbage in memory that might
2951 look like a DTB header after a reboot if no actual DTB is appended
2952 to vmlinux.bin. Do not leave this option active in a production kernel
2953 if you don't intend to always append a DTB.
2957 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2958 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2961 default MIPS_CMDLINE_FROM_BOOTLOADER
2963 config MIPS_CMDLINE_FROM_DTB
2965 bool "Dtb kernel arguments if available"
2967 config MIPS_CMDLINE_DTB_EXTEND
2969 bool "Extend dtb kernel arguments with bootloader arguments"
2971 config MIPS_CMDLINE_FROM_BOOTLOADER
2972 bool "Bootloader kernel arguments if available"
2974 config MIPS_CMDLINE_BUILTIN_EXTEND
2975 depends on CMDLINE_BOOL
2976 bool "Extend builtin kernel arguments with bootloader arguments"
2981 config LOCKDEP_SUPPORT
2985 config STACKTRACE_SUPPORT
2989 config HAVE_LATENCYTOP_SUPPORT
2993 config PGTABLE_LEVELS
2995 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
2996 default 3 if 64BIT && !PAGE_SIZE_64KB
2999 source "init/Kconfig"
3001 source "kernel/Kconfig.freezer"
3003 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3011 bool "Support for PCI controller"
3012 depends on HW_HAS_PCI
3015 Find out whether you have a PCI motherboard. PCI is the name of a
3016 bus system, i.e. the way the CPU talks to the other stuff inside
3017 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
3021 bool "Support for HT-linked PCI"
3023 depends on CPU_LOONGSON3
3027 Loongson family machines use Hyper-Transport bus for inter-core
3028 connection and device connection. The PCI bus is a subordinate
3029 linked at HT. Choose Y for Loongson-3 based machines.
3034 config PCI_DOMAINS_GENERIC
3037 config PCI_DRIVERS_GENERIC
3038 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3041 config PCI_DRIVERS_LEGACY
3042 def_bool !PCI_DRIVERS_GENERIC
3043 select NO_GENERIC_PCI_IOPORT_MAP
3045 source "drivers/pci/Kconfig"
3048 # ISA support is now enabled via select. Too many systems still have the one
3049 # or other ISA chip on the board that users don't know about so don't expect
3050 # users to choose the right thing ...
3057 depends on HW_HAS_EISA
3059 select GENERIC_ISA_DMA
3061 The Extended Industry Standard Architecture (EISA) bus was
3062 developed as an open alternative to the IBM MicroChannel bus.
3064 The EISA bus provided some of the features of the IBM MicroChannel
3065 bus while maintaining backward compatibility with cards made for
3066 the older ISA bus. The EISA bus saw limited use between 1988 and
3067 1995 when it was made obsolete by the PCI bus.
3069 Say Y here if you are building a kernel for an EISA-based machine.
3073 source "drivers/eisa/Kconfig"
3076 bool "TURBOchannel support"
3077 depends on MACH_DECSTATION
3079 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3080 processors. TURBOchannel programming specifications are available
3082 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3084 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3085 Linux driver support status is documented at:
3086 <http://www.linux-mips.org/wiki/DECstation>
3092 config ARCH_MMAP_RND_BITS_MIN
3096 config ARCH_MMAP_RND_BITS_MAX
3100 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3103 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3110 select MIPS_EXTERNAL_TIMER
3118 source "drivers/pcmcia/Kconfig"
3121 tristate "RapidIO support"
3125 If you say Y here, the kernel will include drivers and
3126 infrastructure code to support RapidIO interconnect devices.
3128 source "drivers/rapidio/Kconfig"
3132 menu "Executable file formats"
3134 source "fs/Kconfig.binfmt"
3139 config MIPS32_COMPAT
3145 config SYSVIPC_COMPAT
3149 bool "Kernel support for o32 binaries"
3151 select ARCH_WANT_OLD_COMPAT_IPC
3153 select MIPS32_COMPAT
3154 select SYSVIPC_COMPAT if SYSVIPC
3156 Select this option if you want to run o32 binaries. These are pure
3157 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3158 existing binaries are in this format.
3163 bool "Kernel support for n32 binaries"
3166 select MIPS32_COMPAT
3167 select SYSVIPC_COMPAT if SYSVIPC
3169 Select this option if you want to run n32 binaries. These are
3170 64-bit binaries using 32-bit quantities for addressing and certain
3171 data that would normally be 64-bit. They are used in special
3178 default y if MIPS32_O32 || MIPS32_N32
3183 menu "Power management options"
3185 config ARCH_HIBERNATION_POSSIBLE
3187 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3189 config ARCH_SUSPEND_POSSIBLE
3191 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3193 source "kernel/power/Kconfig"
3197 config MIPS_EXTERNAL_TIMER
3200 menu "CPU Power Management"
3202 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3203 source "drivers/cpufreq/Kconfig"
3206 source "drivers/cpuidle/Kconfig"
3210 source "net/Kconfig"
3212 source "drivers/Kconfig"
3214 source "drivers/firmware/Kconfig"
3218 source "arch/mips/Kconfig.debug"
3220 source "security/Kconfig"
3222 source "crypto/Kconfig"
3224 source "lib/Kconfig"
3226 source "arch/mips/kvm/Kconfig"