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
20 select GENERIC_ATOMIC64 if !64BIT
21 select GENERIC_CLOCKEVENTS
22 select GENERIC_CMOS_UPDATE
23 select GENERIC_CPU_AUTOPROBE
25 select GENERIC_IRQ_PROBE
26 select GENERIC_IRQ_SHOW
27 select GENERIC_LIB_ASHLDI3
28 select GENERIC_LIB_ASHRDI3
29 select GENERIC_LIB_CMPDI2
30 select GENERIC_LIB_LSHRDI3
31 select GENERIC_LIB_UCMPDI2
32 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
33 select GENERIC_SMP_IDLE_THREAD
34 select GENERIC_TIME_VSYSCALL
35 select HANDLE_DOMAIN_IRQ
36 select HAVE_ARCH_COMPILER_H
37 select HAVE_ARCH_JUMP_LABEL
39 select HAVE_ARCH_MMAP_RND_BITS if MMU
40 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
41 select HAVE_ARCH_SECCOMP_FILTER
42 select HAVE_ARCH_TRACEHOOK
43 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
44 select HAVE_CBPF_JIT if (!64BIT && !CPU_MICROMIPS)
45 select HAVE_EBPF_JIT if (64BIT && !CPU_MICROMIPS)
46 select HAVE_CONTEXT_TRACKING
47 select HAVE_COPY_THREAD_TLS
48 select HAVE_C_RECORDMCOUNT
49 select HAVE_DEBUG_KMEMLEAK
50 select HAVE_DEBUG_STACKOVERFLOW
51 select HAVE_DMA_CONTIGUOUS
52 select HAVE_DYNAMIC_FTRACE
53 select HAVE_EXIT_THREAD
54 select HAVE_FTRACE_MCOUNT_RECORD
55 select HAVE_FUNCTION_GRAPH_TRACER
56 select HAVE_FUNCTION_TRACER
57 select HAVE_GENERIC_DMA_COHERENT
59 select HAVE_IRQ_EXIT_ON_IRQ_STACK
60 select HAVE_IRQ_TIME_ACCOUNTING
62 select HAVE_KRETPROBES
63 select HAVE_MEMBLOCK_NODE_MAP
64 select HAVE_MOD_ARCH_SPECIFIC
67 select HAVE_PERF_EVENTS
68 select HAVE_REGS_AND_STACK_ACCESS_API
70 select HAVE_STACKPROTECTOR
71 select HAVE_SYSCALL_TRACEPOINTS
72 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
73 select IRQ_FORCED_THREADING
74 select MODULES_USE_ELF_RELA if MODULES && 64BIT
75 select MODULES_USE_ELF_REL if MODULES
76 select PERF_USE_VMALLOC
78 select SYSCTL_EXCEPTION_TRACE
81 menu "Machine selection"
88 bool "Generic board-agnostic MIPS kernel"
92 select CLKSRC_MIPS_GIC
94 select CPU_MIPSR2_IRQ_VI
95 select CPU_MIPSR2_IRQ_EI
97 select DMA_PERDEV_COHERENT
101 select MIPS_AUTO_PFN_OFFSET
102 select MIPS_CPU_SCACHE
104 select MIPS_L1_CACHE_SHIFT_7
105 select NO_EXCEPT_FILL
106 select PCI_DRIVERS_GENERIC
110 select SYS_HAS_CPU_MIPS32_R1
111 select SYS_HAS_CPU_MIPS32_R2
112 select SYS_HAS_CPU_MIPS32_R6
113 select SYS_HAS_CPU_MIPS64_R1
114 select SYS_HAS_CPU_MIPS64_R2
115 select SYS_HAS_CPU_MIPS64_R6
116 select SYS_SUPPORTS_32BIT_KERNEL
117 select SYS_SUPPORTS_64BIT_KERNEL
118 select SYS_SUPPORTS_BIG_ENDIAN
119 select SYS_SUPPORTS_HIGHMEM
120 select SYS_SUPPORTS_LITTLE_ENDIAN
121 select SYS_SUPPORTS_MICROMIPS
122 select SYS_SUPPORTS_MIPS_CPS
123 select SYS_SUPPORTS_MIPS16
124 select SYS_SUPPORTS_MULTITHREADING
125 select SYS_SUPPORTS_RELOCATABLE
126 select SYS_SUPPORTS_SMARTMIPS
127 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
128 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
129 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
130 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
131 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
132 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
136 Select this to build a kernel which aims to support multiple boards,
137 generally using a flattened device tree passed from the bootloader
138 using the boot protocol defined in the UHI (Unified Hosting
139 Interface) specification.
142 bool "Alchemy processor based machines"
143 select PHYS_ADDR_T_64BIT
147 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
148 select SYS_HAS_CPU_MIPS32_R1
149 select SYS_SUPPORTS_32BIT_KERNEL
150 select SYS_SUPPORTS_APM_EMULATION
152 select SYS_SUPPORTS_ZBOOT
156 bool "Texas Instruments AR7"
158 select DMA_NONCOHERENT
162 select NO_EXCEPT_FILL
164 select SYS_HAS_CPU_MIPS32_R1
165 select SYS_HAS_EARLY_PRINTK
166 select SYS_SUPPORTS_32BIT_KERNEL
167 select SYS_SUPPORTS_LITTLE_ENDIAN
168 select SYS_SUPPORTS_MIPS16
169 select SYS_SUPPORTS_ZBOOT_UART16550
174 Support for the Texas Instruments AR7 System-on-a-Chip
175 family: TNETD7100, 7200 and 7300.
178 bool "Atheros AR231x/AR531x SoC support"
181 select DMA_NONCOHERENT
184 select SYS_HAS_CPU_MIPS32_R1
185 select SYS_SUPPORTS_BIG_ENDIAN
186 select SYS_SUPPORTS_32BIT_KERNEL
187 select SYS_HAS_EARLY_PRINTK
189 Support for Atheros AR231x and Atheros AR531x based boards
192 bool "Atheros AR71XX/AR724X/AR913X based boards"
193 select ARCH_HAS_RESET_CONTROLLER
197 select DMA_NONCOHERENT
205 select SYS_HAS_CPU_MIPS32_R2
206 select SYS_HAS_EARLY_PRINTK
207 select SYS_SUPPORTS_32BIT_KERNEL
208 select SYS_SUPPORTS_BIG_ENDIAN
209 select SYS_SUPPORTS_MIPS16
210 select SYS_SUPPORTS_ZBOOT_UART_PROM
212 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
214 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
217 bool "Broadcom Generic BMIPS kernel"
218 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
219 select ARCH_HAS_PHYS_TO_DMA
221 select NO_EXCEPT_FILL
227 select BCM6345_L1_IRQ
228 select BCM7038_L1_IRQ
229 select BCM7120_L2_IRQ
230 select BRCMSTB_L2_IRQ
232 select DMA_NONCOHERENT
233 select SYS_SUPPORTS_32BIT_KERNEL
234 select SYS_SUPPORTS_LITTLE_ENDIAN
235 select SYS_SUPPORTS_BIG_ENDIAN
236 select SYS_SUPPORTS_HIGHMEM
237 select SYS_HAS_CPU_BMIPS32_3300
238 select SYS_HAS_CPU_BMIPS4350
239 select SYS_HAS_CPU_BMIPS4380
240 select SYS_HAS_CPU_BMIPS5000
242 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
243 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
244 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
245 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
246 select HARDIRQS_SW_RESEND
248 Build a generic DT-based kernel image that boots on select
249 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
250 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
251 must be set appropriately for your board.
254 bool "Broadcom BCM47XX based boards"
258 select DMA_NONCOHERENT
261 select SYS_HAS_CPU_MIPS32_R1
262 select NO_EXCEPT_FILL
263 select SYS_SUPPORTS_32BIT_KERNEL
264 select SYS_SUPPORTS_LITTLE_ENDIAN
265 select SYS_SUPPORTS_MIPS16
266 select SYS_SUPPORTS_ZBOOT
267 select SYS_HAS_EARLY_PRINTK
268 select USE_GENERIC_EARLY_PRINTK_8250
270 select LEDS_GPIO_REGISTER
273 select BCM47XX_SSB if !BCM47XX_BCMA
275 Support for BCM47XX based boards
278 bool "Broadcom BCM63XX based boards"
283 select DMA_NONCOHERENT
285 select SYS_SUPPORTS_32BIT_KERNEL
286 select SYS_SUPPORTS_BIG_ENDIAN
287 select SYS_HAS_EARLY_PRINTK
291 select MIPS_L1_CACHE_SHIFT_4
294 Support for BCM63XX based boards
301 select DMA_NONCOHERENT
307 select PCI_GT64XXX_PCI0
309 select SYS_HAS_CPU_NEVADA
310 select SYS_HAS_EARLY_PRINTK
311 select SYS_SUPPORTS_32BIT_KERNEL
312 select SYS_SUPPORTS_64BIT_KERNEL
313 select SYS_SUPPORTS_LITTLE_ENDIAN
314 select USE_GENERIC_EARLY_PRINTK_8250
316 config MACH_DECSTATION
320 select CEVT_R4K if CPU_R4X00
322 select CSRC_R4K if CPU_R4X00
323 select CPU_DADDI_WORKAROUNDS if 64BIT
324 select CPU_R4000_WORKAROUNDS if 64BIT
325 select CPU_R4400_WORKAROUNDS if 64BIT
326 select DMA_NONCOHERENT
329 select SYS_HAS_CPU_R3000
330 select SYS_HAS_CPU_R4X00
331 select SYS_SUPPORTS_32BIT_KERNEL
332 select SYS_SUPPORTS_64BIT_KERNEL
333 select SYS_SUPPORTS_LITTLE_ENDIAN
334 select SYS_SUPPORTS_128HZ
335 select SYS_SUPPORTS_256HZ
336 select SYS_SUPPORTS_1024HZ
337 select MIPS_L1_CACHE_SHIFT_4
339 This enables support for DEC's MIPS based workstations. For details
340 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
341 DECstation porting pages on <http://decstation.unix-ag.org/>.
343 If you have one of the following DECstation Models you definitely
344 want to choose R4xx0 for the CPU Type:
351 otherwise choose R3000.
354 bool "Jazz family of machines"
355 select ARCH_MIGHT_HAVE_PC_PARPORT
356 select ARCH_MIGHT_HAVE_PC_SERIO
359 select ARCH_MAY_HAVE_PC_FDC
362 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
363 select GENERIC_ISA_DMA
364 select HAVE_PCSPKR_PLATFORM
369 select SYS_HAS_CPU_R4X00
370 select SYS_SUPPORTS_32BIT_KERNEL
371 select SYS_SUPPORTS_64BIT_KERNEL
372 select SYS_SUPPORTS_100HZ
374 This a family of machines based on the MIPS R4030 chipset which was
375 used by several vendors to build RISC/os and Windows NT workstations.
376 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
377 Olivetti M700-10 workstations.
380 bool "Ingenic SoC based machines"
381 select SYS_SUPPORTS_32BIT_KERNEL
382 select SYS_SUPPORTS_LITTLE_ENDIAN
383 select SYS_SUPPORTS_ZBOOT_UART16550
384 select DMA_NONCOHERENT
389 select GENERIC_IRQ_CHIP
395 bool "Lantiq based platforms"
396 select DMA_NONCOHERENT
400 select SYS_HAS_CPU_MIPS32_R1
401 select SYS_HAS_CPU_MIPS32_R2
402 select SYS_SUPPORTS_BIG_ENDIAN
403 select SYS_SUPPORTS_32BIT_KERNEL
404 select SYS_SUPPORTS_MIPS16
405 select SYS_SUPPORTS_MULTITHREADING
406 select SYS_SUPPORTS_VPE_LOADER
407 select SYS_HAS_EARLY_PRINTK
414 select PINCTRL_LANTIQ
415 select ARCH_HAS_RESET_CONTROLLER
416 select RESET_CONTROLLER
419 bool "LASAT Networks platforms"
423 select DMA_NONCOHERENT
424 select SYS_HAS_EARLY_PRINTK
427 select PCI_GT64XXX_PCI0
429 select R5000_CPU_SCACHE
430 select SYS_HAS_CPU_R5000
431 select SYS_SUPPORTS_32BIT_KERNEL
432 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
433 select SYS_SUPPORTS_LITTLE_ENDIAN
435 config MACH_LOONGSON32
436 bool "Loongson-1 family of machines"
437 select SYS_SUPPORTS_ZBOOT
439 This enables support for the Loongson-1 family of machines.
441 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
442 the Institute of Computing Technology (ICT), Chinese Academy of
445 config MACH_LOONGSON64
446 bool "Loongson-2/3 family of machines"
447 select SYS_SUPPORTS_ZBOOT
449 This enables the support of Loongson-2/3 family of machines.
451 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
452 family of multi-core CPUs. They are both 64-bit general-purpose
453 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
454 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
455 in the People's Republic of China. The chief architect is Professor
458 config MACH_PISTACHIO
459 bool "IMG Pistachio SoC based boards"
463 select CLKSRC_MIPS_GIC
466 select DMA_NONCOHERENT
471 select MIPS_CPU_SCACHE
475 select SYS_HAS_CPU_MIPS32_R2
476 select SYS_SUPPORTS_32BIT_KERNEL
477 select SYS_SUPPORTS_LITTLE_ENDIAN
478 select SYS_SUPPORTS_MIPS_CPS
479 select SYS_SUPPORTS_MULTITHREADING
480 select SYS_SUPPORTS_RELOCATABLE
481 select SYS_SUPPORTS_ZBOOT
482 select SYS_HAS_EARLY_PRINTK
483 select USE_GENERIC_EARLY_PRINTK_8250
486 This enables support for the IMG Pistachio SoC platform.
489 bool "MIPS Malta board"
490 select ARCH_MAY_HAVE_PC_FDC
491 select ARCH_MIGHT_HAVE_PC_PARPORT
492 select ARCH_MIGHT_HAVE_PC_SERIO
498 select CLKSRC_MIPS_GIC
500 select DMA_MAYBE_COHERENT
501 select GENERIC_ISA_DMA
502 select HAVE_PCSPKR_PLATFORM
509 select MIPS_CPU_SCACHE
510 select MIPS_L1_CACHE_SHIFT_6
511 select PCI_GT64XXX_PCI0
515 select SYS_HAS_CPU_MIPS32_R1
516 select SYS_HAS_CPU_MIPS32_R2
517 select SYS_HAS_CPU_MIPS32_R3_5
518 select SYS_HAS_CPU_MIPS32_R5
519 select SYS_HAS_CPU_MIPS32_R6
520 select SYS_HAS_CPU_MIPS64_R1
521 select SYS_HAS_CPU_MIPS64_R2
522 select SYS_HAS_CPU_MIPS64_R6
523 select SYS_HAS_CPU_NEVADA
524 select SYS_HAS_CPU_RM7000
525 select SYS_SUPPORTS_32BIT_KERNEL
526 select SYS_SUPPORTS_64BIT_KERNEL
527 select SYS_SUPPORTS_BIG_ENDIAN
528 select SYS_SUPPORTS_HIGHMEM
529 select SYS_SUPPORTS_LITTLE_ENDIAN
530 select SYS_SUPPORTS_MICROMIPS
531 select SYS_SUPPORTS_MIPS_CMP
532 select SYS_SUPPORTS_MIPS_CPS
533 select SYS_SUPPORTS_MIPS16
534 select SYS_SUPPORTS_MULTITHREADING
535 select SYS_SUPPORTS_SMARTMIPS
536 select SYS_SUPPORTS_VPE_LOADER
537 select SYS_SUPPORTS_ZBOOT
538 select SYS_SUPPORTS_RELOCATABLE
541 select ZONE_DMA32 if 64BIT
545 This enables support for the MIPS Technologies Malta evaluation
549 bool "Microchip PIC32 Family"
551 This enables support for the Microchip PIC32 family of platforms.
553 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
557 bool "NEC EMMA2RH Mark-eins board"
561 This enables support for the NEC Electronics Mark-eins boards.
564 bool "NEC VR4100 series based machines"
567 select SYS_HAS_CPU_VR41XX
568 select SYS_SUPPORTS_MIPS16
572 bool "NXP STB220 board"
575 Support for NXP Semiconductors STB220 Development Board.
582 Support for NXP Semiconductors STB225 Development Board.
585 bool "PMC-Sierra MSP chipsets"
588 select DMA_NONCOHERENT
590 select NO_EXCEPT_FILL
592 select SYS_HAS_CPU_MIPS32_R1
593 select SYS_HAS_CPU_MIPS32_R2
594 select SYS_SUPPORTS_32BIT_KERNEL
595 select SYS_SUPPORTS_BIG_ENDIAN
596 select SYS_SUPPORTS_MIPS16
599 select SERIAL_8250_CONSOLE
600 select USB_EHCI_BIG_ENDIAN_MMIO
601 select USB_EHCI_BIG_ENDIAN_DESC
603 This adds support for the PMC-Sierra family of Multi-Service
604 Processor System-On-A-Chips. These parts include a number
605 of integrated peripherals, interfaces and DSPs in addition to
606 a variety of MIPS cores.
609 bool "Ralink based machines"
613 select DMA_NONCOHERENT
616 select SYS_HAS_CPU_MIPS32_R1
617 select SYS_HAS_CPU_MIPS32_R2
618 select SYS_SUPPORTS_32BIT_KERNEL
619 select SYS_SUPPORTS_LITTLE_ENDIAN
620 select SYS_SUPPORTS_MIPS16
621 select SYS_HAS_EARLY_PRINTK
623 select ARCH_HAS_RESET_CONTROLLER
624 select RESET_CONTROLLER
627 bool "SGI IP22 (Indy/Indigo2)"
630 select ARCH_MIGHT_HAVE_PC_SERIO
634 select DEFAULT_SGI_PARTITION
635 select DMA_NONCOHERENT
639 select IP22_CPU_SCACHE
641 select GENERIC_ISA_DMA_SUPPORT_BROKEN
643 select SGI_HAS_INDYDOG
649 select SYS_HAS_CPU_R4X00
650 select SYS_HAS_CPU_R5000
652 # Disable EARLY_PRINTK for now since it leads to overwritten prom
653 # memory during early boot on some machines.
655 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
656 # for a more details discussion
658 # select SYS_HAS_EARLY_PRINTK
659 select SYS_SUPPORTS_32BIT_KERNEL
660 select SYS_SUPPORTS_64BIT_KERNEL
661 select SYS_SUPPORTS_BIG_ENDIAN
662 select MIPS_L1_CACHE_SHIFT_7
664 This are the SGI Indy, Challenge S and Indigo2, as well as certain
665 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
666 that runs on these, say Y here.
669 bool "SGI IP27 (Origin200/2000)"
670 select ARCH_HAS_PHYS_TO_DMA
674 select DEFAULT_SGI_PARTITION
675 select SYS_HAS_EARLY_PRINTK
677 select NR_CPUS_DEFAULT_64
678 select SYS_HAS_CPU_R10000
679 select SYS_SUPPORTS_64BIT_KERNEL
680 select SYS_SUPPORTS_BIG_ENDIAN
681 select SYS_SUPPORTS_NUMA
682 select SYS_SUPPORTS_SMP
683 select MIPS_L1_CACHE_SHIFT_7
685 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
686 workstations. To compile a Linux kernel that runs on these, say Y
690 bool "SGI IP28 (Indigo2 R10k)"
693 select ARCH_MIGHT_HAVE_PC_SERIO
697 select DEFAULT_SGI_PARTITION
698 select DMA_NONCOHERENT
699 select GENERIC_ISA_DMA_SUPPORT_BROKEN
705 select SGI_HAS_INDYDOG
711 select SYS_HAS_CPU_R10000
713 # Disable EARLY_PRINTK for now since it leads to overwritten prom
714 # memory during early boot on some machines.
716 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
717 # for a more details discussion
719 # select SYS_HAS_EARLY_PRINTK
720 select SYS_SUPPORTS_64BIT_KERNEL
721 select SYS_SUPPORTS_BIG_ENDIAN
722 select MIPS_L1_CACHE_SHIFT_7
724 This is the SGI Indigo2 with R10000 processor. To compile a Linux
725 kernel that runs on these, say Y here.
729 select ARCH_HAS_PHYS_TO_DMA
735 select DMA_NONCOHERENT
738 select R5000_CPU_SCACHE
739 select RM7000_CPU_SCACHE
740 select SYS_HAS_CPU_R5000
741 select SYS_HAS_CPU_R10000 if BROKEN
742 select SYS_HAS_CPU_RM7000
743 select SYS_HAS_CPU_NEVADA
744 select SYS_SUPPORTS_64BIT_KERNEL
745 select SYS_SUPPORTS_BIG_ENDIAN
747 If you want this kernel to run on SGI O2 workstation, say Y here.
750 bool "Sibyte BCM91120C-CRhine"
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 BCM91120x-Carmel"
761 select SIBYTE_BCM1120
763 select SYS_HAS_CPU_SB1
764 select SYS_SUPPORTS_BIG_ENDIAN
765 select SYS_SUPPORTS_LITTLE_ENDIAN
768 bool "Sibyte BCM91125C-CRhone"
770 select SIBYTE_BCM1125
772 select SYS_HAS_CPU_SB1
773 select SYS_SUPPORTS_BIG_ENDIAN
774 select SYS_SUPPORTS_HIGHMEM
775 select SYS_SUPPORTS_LITTLE_ENDIAN
778 bool "Sibyte BCM91125E-Rhone"
780 select SIBYTE_BCM1125H
782 select SYS_HAS_CPU_SB1
783 select SYS_SUPPORTS_BIG_ENDIAN
784 select SYS_SUPPORTS_LITTLE_ENDIAN
787 bool "Sibyte BCM91250A-SWARM"
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
796 select ZONE_DMA32 if 64BIT
798 config SIBYTE_LITTLESUR
799 bool "Sibyte BCM91250C2-LittleSur"
801 select HAVE_PATA_PLATFORM
804 select SYS_HAS_CPU_SB1
805 select SYS_SUPPORTS_BIG_ENDIAN
806 select SYS_SUPPORTS_HIGHMEM
807 select SYS_SUPPORTS_LITTLE_ENDIAN
809 config SIBYTE_SENTOSA
810 bool "Sibyte BCM91250E-Sentosa"
814 select SYS_HAS_CPU_SB1
815 select SYS_SUPPORTS_BIG_ENDIAN
816 select SYS_SUPPORTS_LITTLE_ENDIAN
819 bool "Sibyte BCM91480B-BigSur"
821 select NR_CPUS_DEFAULT_4
822 select SIBYTE_BCM1x80
824 select SYS_HAS_CPU_SB1
825 select SYS_SUPPORTS_BIG_ENDIAN
826 select SYS_SUPPORTS_HIGHMEM
827 select SYS_SUPPORTS_LITTLE_ENDIAN
828 select ZONE_DMA32 if 64BIT
831 bool "SNI RM200/300/400"
832 select FW_ARC if CPU_LITTLE_ENDIAN
833 select FW_ARC32 if CPU_LITTLE_ENDIAN
834 select FW_SNIPROM if CPU_BIG_ENDIAN
835 select ARCH_MAY_HAVE_PC_FDC
836 select ARCH_MIGHT_HAVE_PC_PARPORT
837 select ARCH_MIGHT_HAVE_PC_SERIO
841 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
842 select DMA_NONCOHERENT
843 select GENERIC_ISA_DMA
844 select HAVE_PCSPKR_PLATFORM
851 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
852 select SYS_HAS_CPU_R4X00
853 select SYS_HAS_CPU_R5000
854 select SYS_HAS_CPU_R10000
855 select R5000_CPU_SCACHE
856 select SYS_HAS_EARLY_PRINTK
857 select SYS_SUPPORTS_32BIT_KERNEL
858 select SYS_SUPPORTS_64BIT_KERNEL
859 select SYS_SUPPORTS_BIG_ENDIAN
860 select SYS_SUPPORTS_HIGHMEM
861 select SYS_SUPPORTS_LITTLE_ENDIAN
863 The SNI RM200/300/400 are MIPS-based machines manufactured by
864 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
865 Technology and now in turn merged with Fujitsu. Say Y here to
866 support this machine type.
869 bool "Toshiba TX39 series based machines"
872 bool "Toshiba TX49 series based machines"
874 config MIKROTIK_RB532
875 bool "Mikrotik RB532 boards"
878 select DMA_NONCOHERENT
881 select SYS_HAS_CPU_MIPS32_R1
882 select SYS_SUPPORTS_32BIT_KERNEL
883 select SYS_SUPPORTS_LITTLE_ENDIAN
887 select MIPS_L1_CACHE_SHIFT_4
889 Support the Mikrotik(tm) RouterBoard 532 series,
890 based on the IDT RC32434 SoC.
892 config CAVIUM_OCTEON_SOC
893 bool "Cavium Networks Octeon SoC based boards"
895 select ARCH_HAS_PHYS_TO_DMA
897 select PHYS_ADDR_T_64BIT
898 select SYS_SUPPORTS_64BIT_KERNEL
899 select SYS_SUPPORTS_BIG_ENDIAN
901 select EDAC_ATOMIC_SCRUB
902 select SYS_SUPPORTS_LITTLE_ENDIAN
903 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
904 select SYS_HAS_EARLY_PRINTK
905 select SYS_HAS_CPU_CAVIUM_OCTEON
912 select ARCH_SPARSEMEM_ENABLE
913 select SYS_SUPPORTS_SMP
914 select NR_CPUS_DEFAULT_64
915 select MIPS_NR_CPU_NR_MAP_1024
917 select MTD_COMPLEX_MAPPINGS
919 select SYS_SUPPORTS_RELOCATABLE
921 This option supports all of the Octeon reference boards from Cavium
922 Networks. It builds a kernel that dynamically determines the Octeon
923 CPU type and supports all known board reference implementations.
924 Some of the supported boards are:
931 Say Y here for most Octeon reference boards.
934 bool "Netlogic XLR/XLS based systems"
937 select SYS_HAS_CPU_XLR
938 select SYS_SUPPORTS_SMP
941 select SYS_SUPPORTS_32BIT_KERNEL
942 select SYS_SUPPORTS_64BIT_KERNEL
943 select PHYS_ADDR_T_64BIT
944 select SYS_SUPPORTS_BIG_ENDIAN
945 select SYS_SUPPORTS_HIGHMEM
946 select NR_CPUS_DEFAULT_32
950 select ZONE_DMA32 if 64BIT
952 select SYS_HAS_EARLY_PRINTK
953 select SYS_SUPPORTS_ZBOOT
954 select SYS_SUPPORTS_ZBOOT_UART16550
956 Support for systems based on Netlogic XLR and XLS processors.
957 Say Y here if you have a XLR or XLS based board.
960 bool "Netlogic XLP based systems"
963 select SYS_HAS_CPU_XLP
964 select SYS_SUPPORTS_SMP
966 select SYS_SUPPORTS_32BIT_KERNEL
967 select SYS_SUPPORTS_64BIT_KERNEL
968 select PHYS_ADDR_T_64BIT
970 select SYS_SUPPORTS_BIG_ENDIAN
971 select SYS_SUPPORTS_LITTLE_ENDIAN
972 select SYS_SUPPORTS_HIGHMEM
973 select NR_CPUS_DEFAULT_32
977 select ZONE_DMA32 if 64BIT
979 select SYS_HAS_EARLY_PRINTK
981 select SYS_SUPPORTS_ZBOOT
982 select SYS_SUPPORTS_ZBOOT_UART16550
984 This board is based on Netlogic XLP Processor.
985 Say Y here if you have a XLP based board.
988 bool "Para-Virtualized guest system"
991 select SYS_SUPPORTS_64BIT_KERNEL
992 select SYS_SUPPORTS_32BIT_KERNEL
993 select SYS_SUPPORTS_BIG_ENDIAN
994 select SYS_SUPPORTS_SMP
995 select NR_CPUS_DEFAULT_4
996 select SYS_HAS_EARLY_PRINTK
997 select SYS_HAS_CPU_MIPS32_R2
998 select SYS_HAS_CPU_MIPS64_R2
999 select SYS_HAS_CPU_CAVIUM_OCTEON
1001 select SWAP_IO_SPACE
1003 This option supports guest running under ????
1007 source "arch/mips/alchemy/Kconfig"
1008 source "arch/mips/ath25/Kconfig"
1009 source "arch/mips/ath79/Kconfig"
1010 source "arch/mips/bcm47xx/Kconfig"
1011 source "arch/mips/bcm63xx/Kconfig"
1012 source "arch/mips/bmips/Kconfig"
1013 source "arch/mips/generic/Kconfig"
1014 source "arch/mips/jazz/Kconfig"
1015 source "arch/mips/jz4740/Kconfig"
1016 source "arch/mips/lantiq/Kconfig"
1017 source "arch/mips/lasat/Kconfig"
1018 source "arch/mips/pic32/Kconfig"
1019 source "arch/mips/pistachio/Kconfig"
1020 source "arch/mips/pmcs-msp71xx/Kconfig"
1021 source "arch/mips/ralink/Kconfig"
1022 source "arch/mips/sgi-ip27/Kconfig"
1023 source "arch/mips/sibyte/Kconfig"
1024 source "arch/mips/txx9/Kconfig"
1025 source "arch/mips/vr41xx/Kconfig"
1026 source "arch/mips/cavium-octeon/Kconfig"
1027 source "arch/mips/loongson32/Kconfig"
1028 source "arch/mips/loongson64/Kconfig"
1029 source "arch/mips/netlogic/Kconfig"
1030 source "arch/mips/paravirt/Kconfig"
1034 config RWSEM_GENERIC_SPINLOCK
1038 config RWSEM_XCHGADD_ALGORITHM
1041 config GENERIC_HWEIGHT
1045 config GENERIC_CALIBRATE_DELAY
1049 config SCHED_OMIT_FRAME_POINTER
1054 # Select some configuration options automatically based on user selections.
1059 config ARCH_MAY_HAVE_PC_FDC
1095 config MIPS_CLOCK_VSYSCALL
1096 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1105 config ARCH_SUPPORTS_UPROBES
1108 config DMA_MAYBE_COHERENT
1109 select ARCH_HAS_DMA_COHERENCE_H
1110 select DMA_NONCOHERENT
1113 config DMA_PERDEV_COHERENT
1115 select DMA_NONCOHERENT
1117 config DMA_NONCOHERENT
1119 select ARCH_HAS_DMA_MMAP_PGPROT
1120 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1121 select ARCH_HAS_SYNC_DMA_FOR_CPU
1122 select NEED_DMA_MAP_STATE
1123 select ARCH_HAS_DMA_COHERENT_TO_PFN
1124 select DMA_NONCOHERENT_CACHE_SYNC
1126 config SYS_HAS_EARLY_PRINTK
1129 config SYS_SUPPORTS_HOTPLUG_CPU
1132 config MIPS_BONITO64
1147 config NO_IOPORT_MAP
1152 default y if !CPU_HAS_LOAD_STORE_LR
1154 config GENERIC_ISA_DMA
1156 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1159 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1161 select GENERIC_ISA_DMA
1166 config HOLES_IN_ZONE
1169 config SYS_SUPPORTS_RELOCATABLE
1172 Selected if the platform supports relocating the kernel.
1173 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1174 to allow access to command line and entropy sources.
1176 config MIPS_CBPF_JIT
1178 depends on BPF_JIT && HAVE_CBPF_JIT
1180 config MIPS_EBPF_JIT
1182 depends on BPF_JIT && HAVE_EBPF_JIT
1186 # Endianness selection. Sufficiently obscure so many users don't know what to
1187 # answer,so we try hard to limit the available choices. Also the use of a
1188 # choice statement should be more obvious to the user.
1191 prompt "Endianness selection"
1193 Some MIPS machines can be configured for either little or big endian
1194 byte order. These modes require different kernels and a different
1195 Linux distribution. In general there is one preferred byteorder for a
1196 particular system but some systems are just as commonly used in the
1197 one or the other endianness.
1199 config CPU_BIG_ENDIAN
1201 depends on SYS_SUPPORTS_BIG_ENDIAN
1203 config CPU_LITTLE_ENDIAN
1204 bool "Little endian"
1205 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1212 config SYS_SUPPORTS_APM_EMULATION
1215 config SYS_SUPPORTS_BIG_ENDIAN
1218 config SYS_SUPPORTS_LITTLE_ENDIAN
1221 config SYS_SUPPORTS_HUGETLBFS
1223 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1226 config MIPS_HUGE_TLB_SUPPORT
1227 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1244 config PCI_GT64XXX_PCI0
1247 config NO_EXCEPT_FILL
1254 select DMA_NONCOHERENT
1256 select SWAP_IO_SPACE
1257 select SYS_HAS_CPU_R5500
1258 select SYS_SUPPORTS_32BIT_KERNEL
1259 select SYS_SUPPORTS_64BIT_KERNEL
1260 select SYS_SUPPORTS_BIG_ENDIAN
1267 select DMA_NONCOHERENT
1268 select SYS_HAS_CPU_MIPS32_R2
1269 select SYS_SUPPORTS_32BIT_KERNEL
1270 select SYS_SUPPORTS_LITTLE_ENDIAN
1271 select SYS_SUPPORTS_BIG_ENDIAN
1272 select SYS_SUPPORTS_MIPS16
1273 select CPU_MIPSR2_IRQ_VI
1282 config SWAP_IO_SPACE
1285 config SGI_HAS_INDYDOG
1297 config SGI_HAS_ZILOG
1300 config SGI_HAS_I8042
1303 config DEFAULT_SGI_PARTITION
1315 config MIPS_L1_CACHE_SHIFT_4
1318 config MIPS_L1_CACHE_SHIFT_5
1321 config MIPS_L1_CACHE_SHIFT_6
1324 config MIPS_L1_CACHE_SHIFT_7
1327 config MIPS_L1_CACHE_SHIFT
1329 default "7" if MIPS_L1_CACHE_SHIFT_7
1330 default "6" if MIPS_L1_CACHE_SHIFT_6
1331 default "5" if MIPS_L1_CACHE_SHIFT_5
1332 default "4" if MIPS_L1_CACHE_SHIFT_4
1335 config HAVE_STD_PC_SERIAL_PORT
1339 bool "ARC console support"
1340 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1344 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1349 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1358 menu "CPU selection"
1364 config CPU_LOONGSON3
1365 bool "Loongson 3 CPU"
1366 depends on SYS_HAS_CPU_LOONGSON3
1367 select ARCH_HAS_PHYS_TO_DMA
1368 select CPU_SUPPORTS_64BIT_KERNEL
1369 select CPU_SUPPORTS_HIGHMEM
1370 select CPU_SUPPORTS_HUGEPAGES
1371 select CPU_HAS_LOAD_STORE_LR
1372 select WEAK_ORDERING
1373 select WEAK_REORDERING_BEYOND_LLSC
1374 select MIPS_PGD_C0_CONTEXT
1375 select MIPS_L1_CACHE_SHIFT_6
1379 The Loongson 3 processor implements the MIPS64R2 instruction
1380 set with many extensions.
1382 config LOONGSON3_ENHANCEMENT
1383 bool "New Loongson 3 CPU Enhancements"
1386 select CPU_HAS_PREFETCH
1387 depends on CPU_LOONGSON3
1389 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1390 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1391 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1392 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1393 Fast TLB refill support, etc.
1395 This option enable those enhancements which are not probed at run
1396 time. If you want a generic kernel to run on all Loongson 3 machines,
1397 please say 'N' here. If you want a high-performance kernel to run on
1398 new Loongson 3 machines only, please say 'Y' here.
1400 config CPU_LOONGSON2E
1402 depends on SYS_HAS_CPU_LOONGSON2E
1403 select CPU_LOONGSON2
1405 The Loongson 2E processor implements the MIPS III instruction set
1406 with many extensions.
1408 It has an internal FPGA northbridge, which is compatible to
1411 config CPU_LOONGSON2F
1413 depends on SYS_HAS_CPU_LOONGSON2F
1414 select CPU_LOONGSON2
1417 The Loongson 2F processor implements the MIPS III instruction set
1418 with many extensions.
1420 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1421 have a similar programming interface with FPGA northbridge used in
1424 config CPU_LOONGSON1B
1426 depends on SYS_HAS_CPU_LOONGSON1B
1427 select CPU_LOONGSON1
1428 select LEDS_GPIO_REGISTER
1430 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1431 Release 1 instruction set and part of the MIPS32 Release 2
1434 config CPU_LOONGSON1C
1436 depends on SYS_HAS_CPU_LOONGSON1C
1437 select CPU_LOONGSON1
1438 select LEDS_GPIO_REGISTER
1440 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1441 Release 1 instruction set and part of the MIPS32 Release 2
1444 config CPU_MIPS32_R1
1445 bool "MIPS32 Release 1"
1446 depends on SYS_HAS_CPU_MIPS32_R1
1447 select CPU_HAS_PREFETCH
1448 select CPU_HAS_LOAD_STORE_LR
1449 select CPU_SUPPORTS_32BIT_KERNEL
1450 select CPU_SUPPORTS_HIGHMEM
1452 Choose this option to build a kernel for release 1 or later of the
1453 MIPS32 architecture. Most modern embedded systems with a 32-bit
1454 MIPS processor are based on a MIPS32 processor. If you know the
1455 specific type of processor in your system, choose those that one
1456 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1457 Release 2 of the MIPS32 architecture is available since several
1458 years so chances are you even have a MIPS32 Release 2 processor
1459 in which case you should choose CPU_MIPS32_R2 instead for better
1462 config CPU_MIPS32_R2
1463 bool "MIPS32 Release 2"
1464 depends on SYS_HAS_CPU_MIPS32_R2
1465 select CPU_HAS_PREFETCH
1466 select CPU_HAS_LOAD_STORE_LR
1467 select CPU_SUPPORTS_32BIT_KERNEL
1468 select CPU_SUPPORTS_HIGHMEM
1469 select CPU_SUPPORTS_MSA
1472 Choose this option to build a kernel for release 2 or later of the
1473 MIPS32 architecture. Most modern embedded systems with a 32-bit
1474 MIPS processor are based on a MIPS32 processor. If you know the
1475 specific type of processor in your system, choose those that one
1476 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1478 config CPU_MIPS32_R6
1479 bool "MIPS32 Release 6"
1480 depends on SYS_HAS_CPU_MIPS32_R6
1481 select CPU_HAS_PREFETCH
1482 select CPU_SUPPORTS_32BIT_KERNEL
1483 select CPU_SUPPORTS_HIGHMEM
1484 select CPU_SUPPORTS_MSA
1486 select MIPS_O32_FP64_SUPPORT
1488 Choose this option to build a kernel for release 6 or later of the
1489 MIPS32 architecture. New MIPS processors, starting with the Warrior
1490 family, are based on a MIPS32r6 processor. If you own an older
1491 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1493 config CPU_MIPS64_R1
1494 bool "MIPS64 Release 1"
1495 depends on SYS_HAS_CPU_MIPS64_R1
1496 select CPU_HAS_PREFETCH
1497 select CPU_HAS_LOAD_STORE_LR
1498 select CPU_SUPPORTS_32BIT_KERNEL
1499 select CPU_SUPPORTS_64BIT_KERNEL
1500 select CPU_SUPPORTS_HIGHMEM
1501 select CPU_SUPPORTS_HUGEPAGES
1503 Choose this option to build a kernel for release 1 or later of the
1504 MIPS64 architecture. Many modern embedded systems with a 64-bit
1505 MIPS processor are based on a MIPS64 processor. If you know the
1506 specific type of processor in your system, choose those that one
1507 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1508 Release 2 of the MIPS64 architecture is available since several
1509 years so chances are you even have a MIPS64 Release 2 processor
1510 in which case you should choose CPU_MIPS64_R2 instead for better
1513 config CPU_MIPS64_R2
1514 bool "MIPS64 Release 2"
1515 depends on SYS_HAS_CPU_MIPS64_R2
1516 select CPU_HAS_PREFETCH
1517 select CPU_HAS_LOAD_STORE_LR
1518 select CPU_SUPPORTS_32BIT_KERNEL
1519 select CPU_SUPPORTS_64BIT_KERNEL
1520 select CPU_SUPPORTS_HIGHMEM
1521 select CPU_SUPPORTS_HUGEPAGES
1522 select CPU_SUPPORTS_MSA
1525 Choose this option to build a kernel for release 2 or later of the
1526 MIPS64 architecture. Many modern embedded systems with a 64-bit
1527 MIPS processor are based on a MIPS64 processor. If you know the
1528 specific type of processor in your system, choose those that one
1529 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1531 config CPU_MIPS64_R6
1532 bool "MIPS64 Release 6"
1533 depends on SYS_HAS_CPU_MIPS64_R6
1534 select CPU_HAS_PREFETCH
1535 select CPU_SUPPORTS_32BIT_KERNEL
1536 select CPU_SUPPORTS_64BIT_KERNEL
1537 select CPU_SUPPORTS_HIGHMEM
1538 select CPU_SUPPORTS_MSA
1539 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1542 Choose this option to build a kernel for release 6 or later of the
1543 MIPS64 architecture. New MIPS processors, starting with the Warrior
1544 family, are based on a MIPS64r6 processor. If you own an older
1545 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1549 depends on SYS_HAS_CPU_R3000
1551 select CPU_HAS_LOAD_STORE_LR
1552 select CPU_SUPPORTS_32BIT_KERNEL
1553 select CPU_SUPPORTS_HIGHMEM
1555 Please make sure to pick the right CPU type. Linux/MIPS is not
1556 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1557 *not* work on R4000 machines and vice versa. However, since most
1558 of the supported machines have an R4000 (or similar) CPU, R4x00
1559 might be a safe bet. If the resulting kernel does not work,
1560 try to recompile with R3000.
1564 depends on SYS_HAS_CPU_TX39XX
1565 select CPU_SUPPORTS_32BIT_KERNEL
1566 select CPU_HAS_LOAD_STORE_LR
1570 depends on SYS_HAS_CPU_VR41XX
1571 select CPU_SUPPORTS_32BIT_KERNEL
1572 select CPU_SUPPORTS_64BIT_KERNEL
1573 select CPU_HAS_LOAD_STORE_LR
1575 The options selects support for the NEC VR4100 series of processors.
1576 Only choose this option if you have one of these processors as a
1577 kernel built with this option will not run on any other type of
1578 processor or vice versa.
1582 depends on SYS_HAS_CPU_R4300
1583 select CPU_SUPPORTS_32BIT_KERNEL
1584 select CPU_SUPPORTS_64BIT_KERNEL
1585 select CPU_HAS_LOAD_STORE_LR
1587 MIPS Technologies R4300-series processors.
1591 depends on SYS_HAS_CPU_R4X00
1592 select CPU_SUPPORTS_32BIT_KERNEL
1593 select CPU_SUPPORTS_64BIT_KERNEL
1594 select CPU_SUPPORTS_HUGEPAGES
1595 select CPU_HAS_LOAD_STORE_LR
1597 MIPS Technologies R4000-series processors other than 4300, including
1598 the R4000, R4400, R4600, and 4700.
1602 depends on SYS_HAS_CPU_TX49XX
1603 select CPU_HAS_PREFETCH
1604 select CPU_HAS_LOAD_STORE_LR
1605 select CPU_SUPPORTS_32BIT_KERNEL
1606 select CPU_SUPPORTS_64BIT_KERNEL
1607 select CPU_SUPPORTS_HUGEPAGES
1611 depends on SYS_HAS_CPU_R5000
1612 select CPU_SUPPORTS_32BIT_KERNEL
1613 select CPU_SUPPORTS_64BIT_KERNEL
1614 select CPU_SUPPORTS_HUGEPAGES
1615 select CPU_HAS_LOAD_STORE_LR
1617 MIPS Technologies R5000-series processors other than the Nevada.
1621 depends on SYS_HAS_CPU_R5432
1622 select CPU_SUPPORTS_32BIT_KERNEL
1623 select CPU_SUPPORTS_64BIT_KERNEL
1624 select CPU_SUPPORTS_HUGEPAGES
1625 select CPU_HAS_LOAD_STORE_LR
1629 depends on SYS_HAS_CPU_R5500
1630 select CPU_SUPPORTS_32BIT_KERNEL
1631 select CPU_SUPPORTS_64BIT_KERNEL
1632 select CPU_SUPPORTS_HUGEPAGES
1633 select CPU_HAS_LOAD_STORE_LR
1635 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1640 depends on SYS_HAS_CPU_NEVADA
1641 select CPU_SUPPORTS_32BIT_KERNEL
1642 select CPU_SUPPORTS_64BIT_KERNEL
1643 select CPU_SUPPORTS_HUGEPAGES
1644 select CPU_HAS_LOAD_STORE_LR
1646 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1650 depends on SYS_HAS_CPU_R8000
1651 select CPU_HAS_PREFETCH
1652 select CPU_HAS_LOAD_STORE_LR
1653 select CPU_SUPPORTS_64BIT_KERNEL
1655 MIPS Technologies R8000 processors. Note these processors are
1656 uncommon and the support for them is incomplete.
1660 depends on SYS_HAS_CPU_R10000
1661 select CPU_HAS_PREFETCH
1662 select CPU_HAS_LOAD_STORE_LR
1663 select CPU_SUPPORTS_32BIT_KERNEL
1664 select CPU_SUPPORTS_64BIT_KERNEL
1665 select CPU_SUPPORTS_HIGHMEM
1666 select CPU_SUPPORTS_HUGEPAGES
1668 MIPS Technologies R10000-series processors.
1672 depends on SYS_HAS_CPU_RM7000
1673 select CPU_HAS_PREFETCH
1674 select CPU_HAS_LOAD_STORE_LR
1675 select CPU_SUPPORTS_32BIT_KERNEL
1676 select CPU_SUPPORTS_64BIT_KERNEL
1677 select CPU_SUPPORTS_HIGHMEM
1678 select CPU_SUPPORTS_HUGEPAGES
1682 depends on SYS_HAS_CPU_SB1
1683 select CPU_HAS_LOAD_STORE_LR
1684 select CPU_SUPPORTS_32BIT_KERNEL
1685 select CPU_SUPPORTS_64BIT_KERNEL
1686 select CPU_SUPPORTS_HIGHMEM
1687 select CPU_SUPPORTS_HUGEPAGES
1688 select WEAK_ORDERING
1690 config CPU_CAVIUM_OCTEON
1691 bool "Cavium Octeon processor"
1692 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1693 select CPU_HAS_PREFETCH
1694 select CPU_HAS_LOAD_STORE_LR
1695 select CPU_SUPPORTS_64BIT_KERNEL
1696 select WEAK_ORDERING
1697 select CPU_SUPPORTS_HIGHMEM
1698 select CPU_SUPPORTS_HUGEPAGES
1699 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1700 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1701 select MIPS_L1_CACHE_SHIFT_7
1704 The Cavium Octeon processor is a highly integrated chip containing
1705 many ethernet hardware widgets for networking tasks. The processor
1706 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1707 Full details can be found at http://www.caviumnetworks.com.
1710 bool "Broadcom BMIPS"
1711 depends on SYS_HAS_CPU_BMIPS
1713 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1714 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1715 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1716 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1717 select CPU_SUPPORTS_32BIT_KERNEL
1718 select DMA_NONCOHERENT
1720 select SWAP_IO_SPACE
1721 select WEAK_ORDERING
1722 select CPU_SUPPORTS_HIGHMEM
1723 select CPU_HAS_PREFETCH
1724 select CPU_HAS_LOAD_STORE_LR
1725 select CPU_SUPPORTS_CPUFREQ
1726 select MIPS_EXTERNAL_TIMER
1728 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1731 bool "Netlogic XLR SoC"
1732 depends on SYS_HAS_CPU_XLR
1733 select CPU_HAS_LOAD_STORE_LR
1734 select CPU_SUPPORTS_32BIT_KERNEL
1735 select CPU_SUPPORTS_64BIT_KERNEL
1736 select CPU_SUPPORTS_HIGHMEM
1737 select CPU_SUPPORTS_HUGEPAGES
1738 select WEAK_ORDERING
1739 select WEAK_REORDERING_BEYOND_LLSC
1741 Netlogic Microsystems XLR/XLS processors.
1744 bool "Netlogic XLP SoC"
1745 depends on SYS_HAS_CPU_XLP
1746 select CPU_SUPPORTS_32BIT_KERNEL
1747 select CPU_SUPPORTS_64BIT_KERNEL
1748 select CPU_SUPPORTS_HIGHMEM
1749 select WEAK_ORDERING
1750 select WEAK_REORDERING_BEYOND_LLSC
1751 select CPU_HAS_PREFETCH
1752 select CPU_HAS_LOAD_STORE_LR
1754 select CPU_SUPPORTS_HUGEPAGES
1755 select MIPS_ASID_BITS_VARIABLE
1757 Netlogic Microsystems XLP processors.
1760 config CPU_MIPS32_3_5_FEATURES
1761 bool "MIPS32 Release 3.5 Features"
1762 depends on SYS_HAS_CPU_MIPS32_R3_5
1763 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1765 Choose this option to build a kernel for release 2 or later of the
1766 MIPS32 architecture including features from the 3.5 release such as
1767 support for Enhanced Virtual Addressing (EVA).
1769 config CPU_MIPS32_3_5_EVA
1770 bool "Enhanced Virtual Addressing (EVA)"
1771 depends on CPU_MIPS32_3_5_FEATURES
1775 Choose this option if you want to enable the Enhanced Virtual
1776 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1777 One of its primary benefits is an increase in the maximum size
1778 of lowmem (up to 3GB). If unsure, say 'N' here.
1780 config CPU_MIPS32_R5_FEATURES
1781 bool "MIPS32 Release 5 Features"
1782 depends on SYS_HAS_CPU_MIPS32_R5
1783 depends on CPU_MIPS32_R2
1785 Choose this option to build a kernel for release 2 or later of the
1786 MIPS32 architecture including features from release 5 such as
1787 support for Extended Physical Addressing (XPA).
1789 config CPU_MIPS32_R5_XPA
1790 bool "Extended Physical Addressing (XPA)"
1791 depends on CPU_MIPS32_R5_FEATURES
1793 depends on !PAGE_SIZE_4KB
1794 depends on SYS_SUPPORTS_HIGHMEM
1797 select PHYS_ADDR_T_64BIT
1800 Choose this option if you want to enable the Extended Physical
1801 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1802 benefit is to increase physical addressing equal to or greater
1803 than 40 bits. Note that this has the side effect of turning on
1804 64-bit addressing which in turn makes the PTEs 64-bit in size.
1805 If unsure, say 'N' here.
1808 config CPU_NOP_WORKAROUNDS
1811 config CPU_JUMP_WORKAROUNDS
1814 config CPU_LOONGSON2F_WORKAROUNDS
1815 bool "Loongson 2F Workarounds"
1817 select CPU_NOP_WORKAROUNDS
1818 select CPU_JUMP_WORKAROUNDS
1820 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1821 require workarounds. Without workarounds the system may hang
1822 unexpectedly. For more information please refer to the gas
1823 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1825 Loongson 2F03 and later have fixed these issues and no workarounds
1826 are needed. The workarounds have no significant side effect on them
1827 but may decrease the performance of the system so this option should
1828 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1831 If unsure, please say Y.
1832 endif # CPU_LOONGSON2F
1834 config SYS_SUPPORTS_ZBOOT
1836 select HAVE_KERNEL_GZIP
1837 select HAVE_KERNEL_BZIP2
1838 select HAVE_KERNEL_LZ4
1839 select HAVE_KERNEL_LZMA
1840 select HAVE_KERNEL_LZO
1841 select HAVE_KERNEL_XZ
1843 config SYS_SUPPORTS_ZBOOT_UART16550
1845 select SYS_SUPPORTS_ZBOOT
1847 config SYS_SUPPORTS_ZBOOT_UART_PROM
1849 select SYS_SUPPORTS_ZBOOT
1851 config CPU_LOONGSON2
1853 select CPU_SUPPORTS_32BIT_KERNEL
1854 select CPU_SUPPORTS_64BIT_KERNEL
1855 select CPU_SUPPORTS_HIGHMEM
1856 select CPU_SUPPORTS_HUGEPAGES
1857 select ARCH_HAS_PHYS_TO_DMA
1858 select CPU_HAS_LOAD_STORE_LR
1860 config CPU_LOONGSON1
1864 select CPU_HAS_PREFETCH
1865 select CPU_HAS_LOAD_STORE_LR
1866 select CPU_SUPPORTS_32BIT_KERNEL
1867 select CPU_SUPPORTS_HIGHMEM
1868 select CPU_SUPPORTS_CPUFREQ
1870 config CPU_BMIPS32_3300
1871 select SMP_UP if SMP
1874 config CPU_BMIPS4350
1876 select SYS_SUPPORTS_SMP
1877 select SYS_SUPPORTS_HOTPLUG_CPU
1879 config CPU_BMIPS4380
1881 select MIPS_L1_CACHE_SHIFT_6
1882 select SYS_SUPPORTS_SMP
1883 select SYS_SUPPORTS_HOTPLUG_CPU
1886 config CPU_BMIPS5000
1888 select MIPS_CPU_SCACHE
1889 select MIPS_L1_CACHE_SHIFT_7
1890 select SYS_SUPPORTS_SMP
1891 select SYS_SUPPORTS_HOTPLUG_CPU
1894 config SYS_HAS_CPU_LOONGSON3
1896 select CPU_SUPPORTS_CPUFREQ
1899 config SYS_HAS_CPU_LOONGSON2E
1902 config SYS_HAS_CPU_LOONGSON2F
1904 select CPU_SUPPORTS_CPUFREQ
1905 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1906 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1908 config SYS_HAS_CPU_LOONGSON1B
1911 config SYS_HAS_CPU_LOONGSON1C
1914 config SYS_HAS_CPU_MIPS32_R1
1917 config SYS_HAS_CPU_MIPS32_R2
1920 config SYS_HAS_CPU_MIPS32_R3_5
1923 config SYS_HAS_CPU_MIPS32_R5
1926 config SYS_HAS_CPU_MIPS32_R6
1929 config SYS_HAS_CPU_MIPS64_R1
1932 config SYS_HAS_CPU_MIPS64_R2
1935 config SYS_HAS_CPU_MIPS64_R6
1938 config SYS_HAS_CPU_R3000
1941 config SYS_HAS_CPU_TX39XX
1944 config SYS_HAS_CPU_VR41XX
1947 config SYS_HAS_CPU_R4300
1950 config SYS_HAS_CPU_R4X00
1953 config SYS_HAS_CPU_TX49XX
1956 config SYS_HAS_CPU_R5000
1959 config SYS_HAS_CPU_R5432
1962 config SYS_HAS_CPU_R5500
1965 config SYS_HAS_CPU_NEVADA
1968 config SYS_HAS_CPU_R8000
1971 config SYS_HAS_CPU_R10000
1974 config SYS_HAS_CPU_RM7000
1977 config SYS_HAS_CPU_SB1
1980 config SYS_HAS_CPU_CAVIUM_OCTEON
1983 config SYS_HAS_CPU_BMIPS
1986 config SYS_HAS_CPU_BMIPS32_3300
1988 select SYS_HAS_CPU_BMIPS
1990 config SYS_HAS_CPU_BMIPS4350
1992 select SYS_HAS_CPU_BMIPS
1994 config SYS_HAS_CPU_BMIPS4380
1996 select SYS_HAS_CPU_BMIPS
1998 config SYS_HAS_CPU_BMIPS5000
2000 select SYS_HAS_CPU_BMIPS
2002 config SYS_HAS_CPU_XLR
2005 config SYS_HAS_CPU_XLP
2009 # CPU may reorder R->R, R->W, W->R, W->W
2010 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2012 config WEAK_ORDERING
2016 # CPU may reorder reads and writes beyond LL/SC
2017 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2019 config WEAK_REORDERING_BEYOND_LLSC
2024 # These two indicate any level of the MIPS32 and MIPS64 architecture
2028 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2032 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2035 # These two indicate the revision of the architecture, either Release 1 or Release 2
2039 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2043 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2049 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2051 select HAVE_ARCH_BITREVERSE
2052 select MIPS_ASID_BITS_VARIABLE
2053 select MIPS_CRC_SUPPORT
2062 config SYS_SUPPORTS_32BIT_KERNEL
2064 config SYS_SUPPORTS_64BIT_KERNEL
2066 config CPU_SUPPORTS_32BIT_KERNEL
2068 config CPU_SUPPORTS_64BIT_KERNEL
2070 config CPU_SUPPORTS_CPUFREQ
2072 config CPU_SUPPORTS_ADDRWINCFG
2074 config CPU_SUPPORTS_HUGEPAGES
2076 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2078 config MIPS_PGD_C0_CONTEXT
2080 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2083 # Set to y for ptrace access to watch registers.
2085 config HARDWARE_WATCHPOINTS
2087 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2092 prompt "Kernel code model"
2094 You should only select this option if you have a workload that
2095 actually benefits from 64-bit processing or if your machine has
2096 large memory. You will only be presented a single option in this
2097 menu if your system does not support both 32-bit and 64-bit kernels.
2100 bool "32-bit kernel"
2101 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2104 Select this option if you want to build a 32-bit kernel.
2107 bool "64-bit kernel"
2108 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2110 Select this option if you want to build a 64-bit kernel.
2115 bool "KVM Guest Kernel"
2116 depends on BROKEN_ON_SMP
2118 Select this option if building a guest kernel for KVM (Trap & Emulate)
2121 config KVM_GUEST_TIMER_FREQ
2122 int "Count/Compare Timer Frequency (MHz)"
2123 depends on KVM_GUEST
2126 Set this to non-zero if building a guest kernel for KVM to skip RTC
2127 emulation when determining guest CPU Frequency. Instead, the guest's
2128 timer frequency is specified directly.
2130 config MIPS_VA_BITS_48
2131 bool "48 bits virtual memory"
2134 Support a maximum at least 48 bits of application virtual
2135 memory. Default is 40 bits or less, depending on the CPU.
2136 For page sizes 16k and above, this option results in a small
2137 memory overhead for page tables. For 4k page size, a fourth
2138 level of page tables is added which imposes both a memory
2139 overhead as well as slower TLB fault handling.
2144 prompt "Kernel page size"
2145 default PAGE_SIZE_4KB
2147 config PAGE_SIZE_4KB
2149 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2151 This option select the standard 4kB Linux page size. On some
2152 R3000-family processors this is the only available page size. Using
2153 4kB page size will minimize memory consumption and is therefore
2154 recommended for low memory systems.
2156 config PAGE_SIZE_8KB
2158 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2159 depends on !MIPS_VA_BITS_48
2161 Using 8kB page size will result in higher performance kernel at
2162 the price of higher memory consumption. This option is available
2163 only on R8000 and cnMIPS processors. Note that you will need a
2164 suitable Linux distribution to support this.
2166 config PAGE_SIZE_16KB
2168 depends on !CPU_R3000 && !CPU_TX39XX
2170 Using 16kB page size will result in higher performance kernel at
2171 the price of higher memory consumption. This option is available on
2172 all non-R3000 family processors. Note that you will need a suitable
2173 Linux distribution to support this.
2175 config PAGE_SIZE_32KB
2177 depends on CPU_CAVIUM_OCTEON
2178 depends on !MIPS_VA_BITS_48
2180 Using 32kB page size will result in higher performance kernel at
2181 the price of higher memory consumption. This option is available
2182 only on cnMIPS cores. Note that you will need a suitable Linux
2183 distribution to support this.
2185 config PAGE_SIZE_64KB
2187 depends on !CPU_R3000 && !CPU_TX39XX
2189 Using 64kB page size will result in higher performance kernel at
2190 the price of higher memory consumption. This option is available on
2191 all non-R3000 family processor. Not that at the time of this
2192 writing this option is still high experimental.
2196 config FORCE_MAX_ZONEORDER
2197 int "Maximum zone order"
2198 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2199 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2200 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2201 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2202 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2203 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2207 The kernel memory allocator divides physically contiguous memory
2208 blocks into "zones", where each zone is a power of two number of
2209 pages. This option selects the largest power of two that the kernel
2210 keeps in the memory allocator. If you need to allocate very large
2211 blocks of physically contiguous memory, then you may need to
2212 increase this value.
2214 This config option is actually maximum order plus one. For example,
2215 a value of 11 means that the largest free memory block is 2^10 pages.
2217 The page size is not necessarily 4KB. Keep this in mind
2218 when choosing a value for this option.
2223 config IP22_CPU_SCACHE
2228 # Support for a MIPS32 / MIPS64 style S-caches
2230 config MIPS_CPU_SCACHE
2234 config R5000_CPU_SCACHE
2238 config RM7000_CPU_SCACHE
2242 config SIBYTE_DMA_PAGEOPS
2243 bool "Use DMA to clear/copy pages"
2246 Instead of using the CPU to zero and copy pages, use a Data Mover
2247 channel. These DMA channels are otherwise unused by the standard
2248 SiByte Linux port. Seems to give a small performance benefit.
2250 config CPU_HAS_PREFETCH
2253 config CPU_GENERIC_DUMP_TLB
2255 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
2259 default y if !(CPU_R3000 || CPU_TX39XX)
2261 config CPU_R4K_CACHE_TLB
2263 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2266 bool "MIPS MT SMP support (1 TC on each available VPE)"
2268 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2269 select CPU_MIPSR2_IRQ_VI
2270 select CPU_MIPSR2_IRQ_EI
2275 select SYS_SUPPORTS_SMP
2276 select SYS_SUPPORTS_SCHED_SMT
2277 select MIPS_PERF_SHARED_TC_COUNTERS
2279 This is a kernel model which is known as SMVP. This is supported
2280 on cores with the MT ASE and uses the available VPEs to implement
2281 virtual processors which supports SMP. This is equivalent to the
2282 Intel Hyperthreading feature. For further information go to
2283 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2289 bool "SMT (multithreading) scheduler support"
2290 depends on SYS_SUPPORTS_SCHED_SMT
2293 SMT scheduler support improves the CPU scheduler's decision making
2294 when dealing with MIPS MT enabled cores at a cost of slightly
2295 increased overhead in some places. If unsure say N here.
2297 config SYS_SUPPORTS_SCHED_SMT
2300 config SYS_SUPPORTS_MULTITHREADING
2303 config MIPS_MT_FPAFF
2304 bool "Dynamic FPU affinity for FP-intensive threads"
2306 depends on MIPS_MT_SMP
2308 config MIPSR2_TO_R6_EMULATOR
2309 bool "MIPS R2-to-R6 emulator"
2310 depends on CPU_MIPSR6
2313 Choose this option if you want to run non-R6 MIPS userland code.
2314 Even if you say 'Y' here, the emulator will still be disabled by
2315 default. You can enable it using the 'mipsr2emu' kernel option.
2316 The only reason this is a build-time option is to save ~14K from the
2319 config SYS_SUPPORTS_VPE_LOADER
2321 depends on SYS_SUPPORTS_MULTITHREADING
2323 Indicates that the platform supports the VPE loader, and provides
2326 config MIPS_VPE_LOADER
2327 bool "VPE loader support."
2328 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2329 select CPU_MIPSR2_IRQ_VI
2330 select CPU_MIPSR2_IRQ_EI
2333 Includes a loader for loading an elf relocatable object
2334 onto another VPE and running it.
2336 config MIPS_VPE_LOADER_CMP
2339 depends on MIPS_VPE_LOADER && MIPS_CMP
2341 config MIPS_VPE_LOADER_MT
2344 depends on MIPS_VPE_LOADER && !MIPS_CMP
2346 config MIPS_VPE_LOADER_TOM
2347 bool "Load VPE program into memory hidden from linux"
2348 depends on MIPS_VPE_LOADER
2351 The loader can use memory that is present but has been hidden from
2352 Linux using the kernel command line option "mem=xxMB". It's up to
2353 you to ensure the amount you put in the option and the space your
2354 program requires is less or equal to the amount physically present.
2356 config MIPS_VPE_APSP_API
2357 bool "Enable support for AP/SP API (RTLX)"
2358 depends on MIPS_VPE_LOADER
2360 config MIPS_VPE_APSP_API_CMP
2363 depends on MIPS_VPE_APSP_API && MIPS_CMP
2365 config MIPS_VPE_APSP_API_MT
2368 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2371 bool "MIPS CMP framework support (DEPRECATED)"
2372 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2375 select SYS_SUPPORTS_SMP
2376 select WEAK_ORDERING
2379 Select this if you are using a bootloader which implements the "CMP
2380 framework" protocol (ie. YAMON) and want your kernel to make use of
2381 its ability to start secondary CPUs.
2383 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2387 bool "MIPS Coherent Processing System support"
2388 depends on SYS_SUPPORTS_MIPS_CPS
2390 select MIPS_CPS_PM if HOTPLUG_CPU
2392 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2393 select SYS_SUPPORTS_HOTPLUG_CPU
2394 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2395 select SYS_SUPPORTS_SMP
2396 select WEAK_ORDERING
2398 Select this if you wish to run an SMP kernel across multiple cores
2399 within a MIPS Coherent Processing System. When this option is
2400 enabled the kernel will probe for other cores and boot them with
2401 no external assistance. It is safe to enable this when hardware
2402 support is unavailable.
2415 config SB1_PASS_2_WORKAROUNDS
2417 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2420 config SB1_PASS_2_1_WORKAROUNDS
2422 depends on CPU_SB1 && CPU_SB1_PASS_2
2427 prompt "SmartMIPS or microMIPS ASE support"
2429 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2432 Select this if you want neither microMIPS nor SmartMIPS support
2434 config CPU_HAS_SMARTMIPS
2435 depends on SYS_SUPPORTS_SMARTMIPS
2438 SmartMIPS is a extension of the MIPS32 architecture aimed at
2439 increased security at both hardware and software level for
2440 smartcards. Enabling this option will allow proper use of the
2441 SmartMIPS instructions by Linux applications. However a kernel with
2442 this option will not work on a MIPS core without SmartMIPS core. If
2443 you don't know you probably don't have SmartMIPS and should say N
2446 config CPU_MICROMIPS
2447 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2450 When this option is enabled the kernel will be built using the
2456 bool "Support for the MIPS SIMD Architecture"
2457 depends on CPU_SUPPORTS_MSA
2458 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2460 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2461 and a set of SIMD instructions to operate on them. When this option
2462 is enabled the kernel will support allocating & switching MSA
2463 vector register contexts. If you know that your kernel will only be
2464 running on CPUs which do not support MSA or that your userland will
2465 not be making use of it then you may wish to say N here to reduce
2466 the size & complexity of your kernel.
2479 config CPU_HAS_LOAD_STORE_LR
2482 CPU has support for unaligned load and store instructions:
2483 LWL, LWR, SWL, SWR (Load/store word left/right).
2484 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit systems).
2487 # Vectored interrupt mode is an R2 feature
2489 config CPU_MIPSR2_IRQ_VI
2493 # Extended interrupt mode is an R2 feature
2495 config CPU_MIPSR2_IRQ_EI
2500 depends on !CPU_R3000
2506 config CPU_DADDI_WORKAROUNDS
2509 config CPU_R4000_WORKAROUNDS
2511 select CPU_R4400_WORKAROUNDS
2513 config CPU_R4400_WORKAROUNDS
2516 config MIPS_ASID_SHIFT
2518 default 6 if CPU_R3000 || CPU_TX39XX
2519 default 4 if CPU_R8000
2522 config MIPS_ASID_BITS
2524 default 0 if MIPS_ASID_BITS_VARIABLE
2525 default 6 if CPU_R3000 || CPU_TX39XX
2528 config MIPS_ASID_BITS_VARIABLE
2531 config MIPS_CRC_SUPPORT
2535 # - Highmem only makes sense for the 32-bit kernel.
2536 # - The current highmem code will only work properly on physically indexed
2537 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2538 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2539 # moment we protect the user and offer the highmem option only on machines
2540 # where it's known to be safe. This will not offer highmem on a few systems
2541 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2542 # indexed CPUs but we're playing safe.
2543 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2544 # know they might have memory configurations that could make use of highmem
2548 bool "High Memory Support"
2549 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2551 config CPU_SUPPORTS_HIGHMEM
2554 config SYS_SUPPORTS_HIGHMEM
2557 config SYS_SUPPORTS_SMARTMIPS
2560 config SYS_SUPPORTS_MICROMIPS
2563 config SYS_SUPPORTS_MIPS16
2566 This option must be set if a kernel might be executed on a MIPS16-
2567 enabled CPU even if MIPS16 is not actually being used. In other
2568 words, it makes the kernel MIPS16-tolerant.
2570 config CPU_SUPPORTS_MSA
2573 config ARCH_FLATMEM_ENABLE
2575 depends on !NUMA && !CPU_LOONGSON2
2577 config ARCH_DISCONTIGMEM_ENABLE
2579 default y if SGI_IP27
2581 Say Y to support efficient handling of discontiguous physical memory,
2582 for architectures which are either NUMA (Non-Uniform Memory Access)
2583 or have huge holes in the physical address space for other reasons.
2584 See <file:Documentation/vm/numa.rst> for more.
2586 config ARCH_SPARSEMEM_ENABLE
2588 select SPARSEMEM_STATIC
2592 depends on SYS_SUPPORTS_NUMA
2594 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2595 Access). This option improves performance on systems with more
2596 than two nodes; on two node systems it is generally better to
2597 leave it disabled; on single node systems disable this option
2600 config SYS_SUPPORTS_NUMA
2604 bool "Relocatable kernel"
2605 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2607 This builds a kernel image that retains relocation information
2608 so it can be loaded someplace besides the default 1MB.
2609 The relocations make the kernel binary about 15% larger,
2610 but are discarded at runtime
2612 config RELOCATION_TABLE_SIZE
2613 hex "Relocation table size"
2614 depends on RELOCATABLE
2615 range 0x0 0x01000000
2616 default "0x00100000"
2618 A table of relocation data will be appended to the kernel binary
2619 and parsed at boot to fix up the relocated kernel.
2621 This option allows the amount of space reserved for the table to be
2622 adjusted, although the default of 1Mb should be ok in most cases.
2624 The build will fail and a valid size suggested if this is too small.
2626 If unsure, leave at the default value.
2628 config RANDOMIZE_BASE
2629 bool "Randomize the address of the kernel image"
2630 depends on RELOCATABLE
2632 Randomizes the physical and virtual address at which the
2633 kernel image is loaded, as a security feature that
2634 deters exploit attempts relying on knowledge of the location
2635 of kernel internals.
2637 Entropy is generated using any coprocessor 0 registers available.
2639 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2643 config RANDOMIZE_BASE_MAX_OFFSET
2644 hex "Maximum kASLR offset" if EXPERT
2645 depends on RANDOMIZE_BASE
2646 range 0x0 0x40000000 if EVA || 64BIT
2647 range 0x0 0x08000000
2648 default "0x01000000"
2650 When kASLR is active, this provides the maximum offset that will
2651 be applied to the kernel image. It should be set according to the
2652 amount of physical RAM available in the target system minus
2653 PHYSICAL_START and must be a power of 2.
2655 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2656 EVA or 64-bit. The default is 16Mb.
2661 depends on NEED_MULTIPLE_NODES
2663 config HW_PERF_EVENTS
2664 bool "Enable hardware performance counter support for perf events"
2665 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2668 Enable hardware performance counter support for perf events. If
2669 disabled, perf events will use software events only.
2672 bool "Multi-Processing support"
2673 depends on SYS_SUPPORTS_SMP
2675 This enables support for systems with more than one CPU. If you have
2676 a system with only one CPU, say N. If you have a system with more
2677 than one CPU, say Y.
2679 If you say N here, the kernel will run on uni- and multiprocessor
2680 machines, but will use only one CPU of a multiprocessor machine. If
2681 you say Y here, the kernel will run on many, but not all,
2682 uniprocessor machines. On a uniprocessor machine, the kernel
2683 will run faster if you say N here.
2685 People using multiprocessor machines who say Y here should also say
2686 Y to "Enhanced Real Time Clock Support", below.
2688 See also the SMP-HOWTO available at
2689 <http://www.tldp.org/docs.html#howto>.
2691 If you don't know what to do here, say N.
2694 bool "Support for hot-pluggable CPUs"
2695 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2697 Say Y here to allow turning CPUs off and on. CPUs can be
2698 controlled through /sys/devices/system/cpu.
2699 (Note: power management support will enable this option
2700 automatically on SMP systems. )
2701 Say N if you want to disable CPU hotplug.
2706 config SYS_SUPPORTS_MIPS_CMP
2709 config SYS_SUPPORTS_MIPS_CPS
2712 config SYS_SUPPORTS_SMP
2715 config NR_CPUS_DEFAULT_4
2718 config NR_CPUS_DEFAULT_8
2721 config NR_CPUS_DEFAULT_16
2724 config NR_CPUS_DEFAULT_32
2727 config NR_CPUS_DEFAULT_64
2731 int "Maximum number of CPUs (2-256)"
2734 default "4" if NR_CPUS_DEFAULT_4
2735 default "8" if NR_CPUS_DEFAULT_8
2736 default "16" if NR_CPUS_DEFAULT_16
2737 default "32" if NR_CPUS_DEFAULT_32
2738 default "64" if NR_CPUS_DEFAULT_64
2740 This allows you to specify the maximum number of CPUs which this
2741 kernel will support. The maximum supported value is 32 for 32-bit
2742 kernel and 64 for 64-bit kernels; the minimum value which makes
2743 sense is 1 for Qemu (useful only for kernel debugging purposes)
2744 and 2 for all others.
2746 This is purely to save memory - each supported CPU adds
2747 approximately eight kilobytes to the kernel image. For best
2748 performance should round up your number of processors to the next
2751 config MIPS_PERF_SHARED_TC_COUNTERS
2754 config MIPS_NR_CPU_NR_MAP_1024
2757 config MIPS_NR_CPU_NR_MAP
2760 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2761 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2764 # Timer Interrupt Frequency Configuration
2768 prompt "Timer frequency"
2771 Allows the configuration of the timer frequency.
2774 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2777 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2780 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2783 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2786 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2789 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2792 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2795 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2799 config SYS_SUPPORTS_24HZ
2802 config SYS_SUPPORTS_48HZ
2805 config SYS_SUPPORTS_100HZ
2808 config SYS_SUPPORTS_128HZ
2811 config SYS_SUPPORTS_250HZ
2814 config SYS_SUPPORTS_256HZ
2817 config SYS_SUPPORTS_1000HZ
2820 config SYS_SUPPORTS_1024HZ
2823 config SYS_SUPPORTS_ARBIT_HZ
2825 default y if !SYS_SUPPORTS_24HZ && \
2826 !SYS_SUPPORTS_48HZ && \
2827 !SYS_SUPPORTS_100HZ && \
2828 !SYS_SUPPORTS_128HZ && \
2829 !SYS_SUPPORTS_250HZ && \
2830 !SYS_SUPPORTS_256HZ && \
2831 !SYS_SUPPORTS_1000HZ && \
2832 !SYS_SUPPORTS_1024HZ
2838 default 100 if HZ_100
2839 default 128 if HZ_128
2840 default 250 if HZ_250
2841 default 256 if HZ_256
2842 default 1000 if HZ_1000
2843 default 1024 if HZ_1024
2846 def_bool HIGH_RES_TIMERS
2849 bool "Kexec system call"
2852 kexec is a system call that implements the ability to shutdown your
2853 current kernel, and to start another kernel. It is like a reboot
2854 but it is independent of the system firmware. And like a reboot
2855 you can start any kernel with it, not just Linux.
2857 The name comes from the similarity to the exec system call.
2859 It is an ongoing process to be certain the hardware in a machine
2860 is properly shutdown, so do not be surprised if this code does not
2861 initially work for you. As of this writing the exact hardware
2862 interface is strongly in flux, so no good recommendation can be
2866 bool "Kernel crash dumps"
2868 Generate crash dump after being started by kexec.
2869 This should be normally only set in special crash dump kernels
2870 which are loaded in the main kernel with kexec-tools into
2871 a specially reserved region and then later executed after
2872 a crash by kdump/kexec. The crash dump kernel must be compiled
2873 to a memory address not used by the main kernel or firmware using
2876 config PHYSICAL_START
2877 hex "Physical address where the kernel is loaded"
2878 default "0xffffffff84000000"
2879 depends on CRASH_DUMP
2881 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2882 If you plan to use kernel for capturing the crash dump change
2883 this value to start of the reserved region (the "X" value as
2884 specified in the "crashkernel=YM@XM" command line boot parameter
2885 passed to the panic-ed kernel).
2888 bool "Enable seccomp to safely compute untrusted bytecode"
2892 This kernel feature is useful for number crunching applications
2893 that may need to compute untrusted bytecode during their
2894 execution. By using pipes or other transports made available to
2895 the process as file descriptors supporting the read/write
2896 syscalls, it's possible to isolate those applications in
2897 their own address space using seccomp. Once seccomp is
2898 enabled via /proc/<pid>/seccomp, it cannot be disabled
2899 and the task is only allowed to execute a few safe syscalls
2900 defined by each seccomp mode.
2902 If unsure, say Y. Only embedded should say N here.
2904 config MIPS_O32_FP64_SUPPORT
2905 bool "Support for O32 binaries using 64-bit FP"
2906 depends on 32BIT || MIPS32_O32
2908 When this is enabled, the kernel will support use of 64-bit floating
2909 point registers with binaries using the O32 ABI along with the
2910 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2911 32-bit MIPS systems this support is at the cost of increasing the
2912 size and complexity of the compiled FPU emulator. Thus if you are
2913 running a MIPS32 system and know that none of your userland binaries
2914 will require 64-bit floating point, you may wish to reduce the size
2915 of your kernel & potentially improve FP emulation performance by
2918 Although binutils currently supports use of this flag the details
2919 concerning its effect upon the O32 ABI in userland are still being
2920 worked on. In order to avoid userland becoming dependant upon current
2921 behaviour before the details have been finalised, this option should
2922 be considered experimental and only enabled by those working upon
2930 select OF_EARLY_FLATTREE
2940 prompt "Kernel appended dtb support" if USE_OF
2941 default MIPS_NO_APPENDED_DTB
2943 config MIPS_NO_APPENDED_DTB
2946 Do not enable appended dtb support.
2948 config MIPS_ELF_APPENDED_DTB
2951 With this option, the boot code will look for a device tree binary
2952 DTB) included in the vmlinux ELF section .appended_dtb. By default
2953 it is empty and the DTB can be appended using binutils command
2956 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2958 This is meant as a backward compatiblity convenience for those
2959 systems with a bootloader that can't be upgraded to accommodate
2960 the documented boot protocol using a device tree.
2962 config MIPS_RAW_APPENDED_DTB
2963 bool "vmlinux.bin or vmlinuz.bin"
2965 With this option, the boot code will look for a device tree binary
2966 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2967 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2969 This is meant as a backward compatibility convenience for those
2970 systems with a bootloader that can't be upgraded to accommodate
2971 the documented boot protocol using a device tree.
2973 Beware that there is very little in terms of protection against
2974 this option being confused by leftover garbage in memory that might
2975 look like a DTB header after a reboot if no actual DTB is appended
2976 to vmlinux.bin. Do not leave this option active in a production kernel
2977 if you don't intend to always append a DTB.
2981 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2982 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2985 default MIPS_CMDLINE_FROM_BOOTLOADER
2987 config MIPS_CMDLINE_FROM_DTB
2989 bool "Dtb kernel arguments if available"
2991 config MIPS_CMDLINE_DTB_EXTEND
2993 bool "Extend dtb kernel arguments with bootloader arguments"
2995 config MIPS_CMDLINE_FROM_BOOTLOADER
2996 bool "Bootloader kernel arguments if available"
2998 config MIPS_CMDLINE_BUILTIN_EXTEND
2999 depends on CMDLINE_BOOL
3000 bool "Extend builtin kernel arguments with bootloader arguments"
3005 config LOCKDEP_SUPPORT
3009 config STACKTRACE_SUPPORT
3013 config HAVE_LATENCYTOP_SUPPORT
3017 config PGTABLE_LEVELS
3019 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3020 default 3 if 64BIT && !PAGE_SIZE_64KB
3023 config MIPS_AUTO_PFN_OFFSET
3026 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3034 bool "Support for PCI controller"
3035 depends on HW_HAS_PCI
3038 Find out whether you have a PCI motherboard. PCI is the name of a
3039 bus system, i.e. the way the CPU talks to the other stuff inside
3040 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
3044 bool "Support for HT-linked PCI"
3046 depends on CPU_LOONGSON3
3050 Loongson family machines use Hyper-Transport bus for inter-core
3051 connection and device connection. The PCI bus is a subordinate
3052 linked at HT. Choose Y for Loongson-3 based machines.
3057 config PCI_DOMAINS_GENERIC
3060 config PCI_DRIVERS_GENERIC
3061 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3064 config PCI_DRIVERS_LEGACY
3065 def_bool !PCI_DRIVERS_GENERIC
3066 select NO_GENERIC_PCI_IOPORT_MAP
3068 source "drivers/pci/Kconfig"
3071 # ISA support is now enabled via select. Too many systems still have the one
3072 # or other ISA chip on the board that users don't know about so don't expect
3073 # users to choose the right thing ...
3080 depends on HW_HAS_EISA
3082 select GENERIC_ISA_DMA
3084 The Extended Industry Standard Architecture (EISA) bus was
3085 developed as an open alternative to the IBM MicroChannel bus.
3087 The EISA bus provided some of the features of the IBM MicroChannel
3088 bus while maintaining backward compatibility with cards made for
3089 the older ISA bus. The EISA bus saw limited use between 1988 and
3090 1995 when it was made obsolete by the PCI bus.
3092 Say Y here if you are building a kernel for an EISA-based machine.
3096 source "drivers/eisa/Kconfig"
3099 bool "TURBOchannel support"
3100 depends on MACH_DECSTATION
3102 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3103 processors. TURBOchannel programming specifications are available
3105 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3107 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3108 Linux driver support status is documented at:
3109 <http://www.linux-mips.org/wiki/DECstation>
3115 config ARCH_MMAP_RND_BITS_MIN
3119 config ARCH_MMAP_RND_BITS_MAX
3123 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3126 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3133 select MIPS_EXTERNAL_TIMER
3141 source "drivers/pcmcia/Kconfig"
3148 tristate "RapidIO support"
3149 depends on HAS_RAPIDIO || PCI
3151 If you say Y here, the kernel will include drivers and
3152 infrastructure code to support RapidIO interconnect devices.
3154 source "drivers/rapidio/Kconfig"
3161 config MIPS32_COMPAT
3167 config SYSVIPC_COMPAT
3171 bool "Kernel support for o32 binaries"
3173 select ARCH_WANT_OLD_COMPAT_IPC
3175 select MIPS32_COMPAT
3176 select SYSVIPC_COMPAT if SYSVIPC
3178 Select this option if you want to run o32 binaries. These are pure
3179 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3180 existing binaries are in this format.
3185 bool "Kernel support for n32 binaries"
3188 select MIPS32_COMPAT
3189 select SYSVIPC_COMPAT if SYSVIPC
3191 Select this option if you want to run n32 binaries. These are
3192 64-bit binaries using 32-bit quantities for addressing and certain
3193 data that would normally be 64-bit. They are used in special
3200 default y if MIPS32_O32 || MIPS32_N32
3203 menu "Power management options"
3205 config ARCH_HIBERNATION_POSSIBLE
3207 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3209 config ARCH_SUSPEND_POSSIBLE
3211 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3213 source "kernel/power/Kconfig"
3217 config MIPS_EXTERNAL_TIMER
3220 menu "CPU Power Management"
3222 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3223 source "drivers/cpufreq/Kconfig"
3226 source "drivers/cpuidle/Kconfig"
3230 source "drivers/firmware/Kconfig"
3232 source "arch/mips/kvm/Kconfig"