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
797 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
799 config SIBYTE_LITTLESUR
800 bool "Sibyte BCM91250C2-LittleSur"
802 select HAVE_PATA_PLATFORM
805 select SYS_HAS_CPU_SB1
806 select SYS_SUPPORTS_BIG_ENDIAN
807 select SYS_SUPPORTS_HIGHMEM
808 select SYS_SUPPORTS_LITTLE_ENDIAN
810 config SIBYTE_SENTOSA
811 bool "Sibyte BCM91250E-Sentosa"
815 select SYS_HAS_CPU_SB1
816 select SYS_SUPPORTS_BIG_ENDIAN
817 select SYS_SUPPORTS_LITTLE_ENDIAN
818 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
821 bool "Sibyte BCM91480B-BigSur"
823 select NR_CPUS_DEFAULT_4
824 select SIBYTE_BCM1x80
826 select SYS_HAS_CPU_SB1
827 select SYS_SUPPORTS_BIG_ENDIAN
828 select SYS_SUPPORTS_HIGHMEM
829 select SYS_SUPPORTS_LITTLE_ENDIAN
830 select ZONE_DMA32 if 64BIT
831 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
834 bool "SNI RM200/300/400"
835 select FW_ARC if CPU_LITTLE_ENDIAN
836 select FW_ARC32 if CPU_LITTLE_ENDIAN
837 select FW_SNIPROM if CPU_BIG_ENDIAN
838 select ARCH_MAY_HAVE_PC_FDC
839 select ARCH_MIGHT_HAVE_PC_PARPORT
840 select ARCH_MIGHT_HAVE_PC_SERIO
844 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
845 select DMA_NONCOHERENT
846 select GENERIC_ISA_DMA
847 select HAVE_PCSPKR_PLATFORM
854 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
855 select SYS_HAS_CPU_R4X00
856 select SYS_HAS_CPU_R5000
857 select SYS_HAS_CPU_R10000
858 select R5000_CPU_SCACHE
859 select SYS_HAS_EARLY_PRINTK
860 select SYS_SUPPORTS_32BIT_KERNEL
861 select SYS_SUPPORTS_64BIT_KERNEL
862 select SYS_SUPPORTS_BIG_ENDIAN
863 select SYS_SUPPORTS_HIGHMEM
864 select SYS_SUPPORTS_LITTLE_ENDIAN
866 The SNI RM200/300/400 are MIPS-based machines manufactured by
867 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
868 Technology and now in turn merged with Fujitsu. Say Y here to
869 support this machine type.
872 bool "Toshiba TX39 series based machines"
875 bool "Toshiba TX49 series based machines"
877 config MIKROTIK_RB532
878 bool "Mikrotik RB532 boards"
881 select DMA_NONCOHERENT
884 select SYS_HAS_CPU_MIPS32_R1
885 select SYS_SUPPORTS_32BIT_KERNEL
886 select SYS_SUPPORTS_LITTLE_ENDIAN
890 select MIPS_L1_CACHE_SHIFT_4
892 Support the Mikrotik(tm) RouterBoard 532 series,
893 based on the IDT RC32434 SoC.
895 config CAVIUM_OCTEON_SOC
896 bool "Cavium Networks Octeon SoC based boards"
898 select ARCH_HAS_PHYS_TO_DMA
900 select PHYS_ADDR_T_64BIT
901 select SYS_SUPPORTS_64BIT_KERNEL
902 select SYS_SUPPORTS_BIG_ENDIAN
904 select EDAC_ATOMIC_SCRUB
905 select SYS_SUPPORTS_LITTLE_ENDIAN
906 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
907 select SYS_HAS_EARLY_PRINTK
908 select SYS_HAS_CPU_CAVIUM_OCTEON
915 select ARCH_SPARSEMEM_ENABLE
916 select SYS_SUPPORTS_SMP
917 select NR_CPUS_DEFAULT_64
918 select MIPS_NR_CPU_NR_MAP_1024
920 select MTD_COMPLEX_MAPPINGS
922 select SYS_SUPPORTS_RELOCATABLE
924 This option supports all of the Octeon reference boards from Cavium
925 Networks. It builds a kernel that dynamically determines the Octeon
926 CPU type and supports all known board reference implementations.
927 Some of the supported boards are:
934 Say Y here for most Octeon reference boards.
937 bool "Netlogic XLR/XLS based systems"
940 select SYS_HAS_CPU_XLR
941 select SYS_SUPPORTS_SMP
944 select SYS_SUPPORTS_32BIT_KERNEL
945 select SYS_SUPPORTS_64BIT_KERNEL
946 select PHYS_ADDR_T_64BIT
947 select SYS_SUPPORTS_BIG_ENDIAN
948 select SYS_SUPPORTS_HIGHMEM
949 select NR_CPUS_DEFAULT_32
953 select ZONE_DMA32 if 64BIT
955 select SYS_HAS_EARLY_PRINTK
956 select SYS_SUPPORTS_ZBOOT
957 select SYS_SUPPORTS_ZBOOT_UART16550
959 Support for systems based on Netlogic XLR and XLS processors.
960 Say Y here if you have a XLR or XLS based board.
963 bool "Netlogic XLP based systems"
966 select SYS_HAS_CPU_XLP
967 select SYS_SUPPORTS_SMP
969 select SYS_SUPPORTS_32BIT_KERNEL
970 select SYS_SUPPORTS_64BIT_KERNEL
971 select PHYS_ADDR_T_64BIT
973 select SYS_SUPPORTS_BIG_ENDIAN
974 select SYS_SUPPORTS_LITTLE_ENDIAN
975 select SYS_SUPPORTS_HIGHMEM
976 select NR_CPUS_DEFAULT_32
980 select ZONE_DMA32 if 64BIT
982 select SYS_HAS_EARLY_PRINTK
984 select SYS_SUPPORTS_ZBOOT
985 select SYS_SUPPORTS_ZBOOT_UART16550
987 This board is based on Netlogic XLP Processor.
988 Say Y here if you have a XLP based board.
991 bool "Para-Virtualized guest system"
994 select SYS_SUPPORTS_64BIT_KERNEL
995 select SYS_SUPPORTS_32BIT_KERNEL
996 select SYS_SUPPORTS_BIG_ENDIAN
997 select SYS_SUPPORTS_SMP
998 select NR_CPUS_DEFAULT_4
999 select SYS_HAS_EARLY_PRINTK
1000 select SYS_HAS_CPU_MIPS32_R2
1001 select SYS_HAS_CPU_MIPS64_R2
1002 select SYS_HAS_CPU_CAVIUM_OCTEON
1004 select SWAP_IO_SPACE
1006 This option supports guest running under ????
1010 source "arch/mips/alchemy/Kconfig"
1011 source "arch/mips/ath25/Kconfig"
1012 source "arch/mips/ath79/Kconfig"
1013 source "arch/mips/bcm47xx/Kconfig"
1014 source "arch/mips/bcm63xx/Kconfig"
1015 source "arch/mips/bmips/Kconfig"
1016 source "arch/mips/generic/Kconfig"
1017 source "arch/mips/jazz/Kconfig"
1018 source "arch/mips/jz4740/Kconfig"
1019 source "arch/mips/lantiq/Kconfig"
1020 source "arch/mips/lasat/Kconfig"
1021 source "arch/mips/pic32/Kconfig"
1022 source "arch/mips/pistachio/Kconfig"
1023 source "arch/mips/pmcs-msp71xx/Kconfig"
1024 source "arch/mips/ralink/Kconfig"
1025 source "arch/mips/sgi-ip27/Kconfig"
1026 source "arch/mips/sibyte/Kconfig"
1027 source "arch/mips/txx9/Kconfig"
1028 source "arch/mips/vr41xx/Kconfig"
1029 source "arch/mips/cavium-octeon/Kconfig"
1030 source "arch/mips/loongson32/Kconfig"
1031 source "arch/mips/loongson64/Kconfig"
1032 source "arch/mips/netlogic/Kconfig"
1033 source "arch/mips/paravirt/Kconfig"
1037 config RWSEM_GENERIC_SPINLOCK
1041 config RWSEM_XCHGADD_ALGORITHM
1044 config GENERIC_HWEIGHT
1048 config GENERIC_CALIBRATE_DELAY
1052 config SCHED_OMIT_FRAME_POINTER
1057 # Select some configuration options automatically based on user selections.
1062 config ARCH_MAY_HAVE_PC_FDC
1098 config MIPS_CLOCK_VSYSCALL
1099 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1108 config ARCH_SUPPORTS_UPROBES
1111 config DMA_MAYBE_COHERENT
1112 select ARCH_HAS_DMA_COHERENCE_H
1113 select DMA_NONCOHERENT
1116 config DMA_PERDEV_COHERENT
1118 select DMA_NONCOHERENT
1120 config DMA_NONCOHERENT
1122 select ARCH_HAS_DMA_MMAP_PGPROT
1123 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1124 select ARCH_HAS_SYNC_DMA_FOR_CPU
1125 select NEED_DMA_MAP_STATE
1126 select ARCH_HAS_DMA_COHERENT_TO_PFN
1127 select DMA_NONCOHERENT_CACHE_SYNC
1129 config SYS_HAS_EARLY_PRINTK
1132 config SYS_SUPPORTS_HOTPLUG_CPU
1135 config MIPS_BONITO64
1150 config NO_IOPORT_MAP
1155 default y if !CPU_HAS_LOAD_STORE_LR
1157 config GENERIC_ISA_DMA
1159 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1162 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1164 select GENERIC_ISA_DMA
1169 config HOLES_IN_ZONE
1172 config SYS_SUPPORTS_RELOCATABLE
1175 Selected if the platform supports relocating the kernel.
1176 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1177 to allow access to command line and entropy sources.
1179 config MIPS_CBPF_JIT
1181 depends on BPF_JIT && HAVE_CBPF_JIT
1183 config MIPS_EBPF_JIT
1185 depends on BPF_JIT && HAVE_EBPF_JIT
1189 # Endianness selection. Sufficiently obscure so many users don't know what to
1190 # answer,so we try hard to limit the available choices. Also the use of a
1191 # choice statement should be more obvious to the user.
1194 prompt "Endianness selection"
1196 Some MIPS machines can be configured for either little or big endian
1197 byte order. These modes require different kernels and a different
1198 Linux distribution. In general there is one preferred byteorder for a
1199 particular system but some systems are just as commonly used in the
1200 one or the other endianness.
1202 config CPU_BIG_ENDIAN
1204 depends on SYS_SUPPORTS_BIG_ENDIAN
1206 config CPU_LITTLE_ENDIAN
1207 bool "Little endian"
1208 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1215 config SYS_SUPPORTS_APM_EMULATION
1218 config SYS_SUPPORTS_BIG_ENDIAN
1221 config SYS_SUPPORTS_LITTLE_ENDIAN
1224 config SYS_SUPPORTS_HUGETLBFS
1226 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1229 config MIPS_HUGE_TLB_SUPPORT
1230 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1247 config PCI_GT64XXX_PCI0
1250 config NO_EXCEPT_FILL
1257 select DMA_NONCOHERENT
1259 select SWAP_IO_SPACE
1260 select SYS_HAS_CPU_R5500
1261 select SYS_SUPPORTS_32BIT_KERNEL
1262 select SYS_SUPPORTS_64BIT_KERNEL
1263 select SYS_SUPPORTS_BIG_ENDIAN
1270 select DMA_NONCOHERENT
1271 select SYS_HAS_CPU_MIPS32_R2
1272 select SYS_SUPPORTS_32BIT_KERNEL
1273 select SYS_SUPPORTS_LITTLE_ENDIAN
1274 select SYS_SUPPORTS_BIG_ENDIAN
1275 select SYS_SUPPORTS_MIPS16
1276 select CPU_MIPSR2_IRQ_VI
1285 config SWAP_IO_SPACE
1288 config SGI_HAS_INDYDOG
1300 config SGI_HAS_ZILOG
1303 config SGI_HAS_I8042
1306 config DEFAULT_SGI_PARTITION
1318 config MIPS_L1_CACHE_SHIFT_4
1321 config MIPS_L1_CACHE_SHIFT_5
1324 config MIPS_L1_CACHE_SHIFT_6
1327 config MIPS_L1_CACHE_SHIFT_7
1330 config MIPS_L1_CACHE_SHIFT
1332 default "7" if MIPS_L1_CACHE_SHIFT_7
1333 default "6" if MIPS_L1_CACHE_SHIFT_6
1334 default "5" if MIPS_L1_CACHE_SHIFT_5
1335 default "4" if MIPS_L1_CACHE_SHIFT_4
1338 config HAVE_STD_PC_SERIAL_PORT
1342 bool "ARC console support"
1343 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1347 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1352 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1361 menu "CPU selection"
1367 config CPU_LOONGSON3
1368 bool "Loongson 3 CPU"
1369 depends on SYS_HAS_CPU_LOONGSON3
1370 select ARCH_HAS_PHYS_TO_DMA
1371 select CPU_SUPPORTS_64BIT_KERNEL
1372 select CPU_SUPPORTS_HIGHMEM
1373 select CPU_SUPPORTS_HUGEPAGES
1374 select CPU_HAS_LOAD_STORE_LR
1375 select WEAK_ORDERING
1376 select WEAK_REORDERING_BEYOND_LLSC
1377 select MIPS_PGD_C0_CONTEXT
1378 select MIPS_L1_CACHE_SHIFT_6
1382 The Loongson 3 processor implements the MIPS64R2 instruction
1383 set with many extensions.
1385 config LOONGSON3_ENHANCEMENT
1386 bool "New Loongson 3 CPU Enhancements"
1389 select CPU_HAS_PREFETCH
1390 depends on CPU_LOONGSON3
1392 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1393 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1394 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1395 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1396 Fast TLB refill support, etc.
1398 This option enable those enhancements which are not probed at run
1399 time. If you want a generic kernel to run on all Loongson 3 machines,
1400 please say 'N' here. If you want a high-performance kernel to run on
1401 new Loongson 3 machines only, please say 'Y' here.
1403 config CPU_LOONGSON2E
1405 depends on SYS_HAS_CPU_LOONGSON2E
1406 select CPU_LOONGSON2
1408 The Loongson 2E processor implements the MIPS III instruction set
1409 with many extensions.
1411 It has an internal FPGA northbridge, which is compatible to
1414 config CPU_LOONGSON2F
1416 depends on SYS_HAS_CPU_LOONGSON2F
1417 select CPU_LOONGSON2
1420 The Loongson 2F processor implements the MIPS III instruction set
1421 with many extensions.
1423 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1424 have a similar programming interface with FPGA northbridge used in
1427 config CPU_LOONGSON1B
1429 depends on SYS_HAS_CPU_LOONGSON1B
1430 select CPU_LOONGSON1
1431 select LEDS_GPIO_REGISTER
1433 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1434 Release 1 instruction set and part of the MIPS32 Release 2
1437 config CPU_LOONGSON1C
1439 depends on SYS_HAS_CPU_LOONGSON1C
1440 select CPU_LOONGSON1
1441 select LEDS_GPIO_REGISTER
1443 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1444 Release 1 instruction set and part of the MIPS32 Release 2
1447 config CPU_MIPS32_R1
1448 bool "MIPS32 Release 1"
1449 depends on SYS_HAS_CPU_MIPS32_R1
1450 select CPU_HAS_PREFETCH
1451 select CPU_HAS_LOAD_STORE_LR
1452 select CPU_SUPPORTS_32BIT_KERNEL
1453 select CPU_SUPPORTS_HIGHMEM
1455 Choose this option to build a kernel for release 1 or later of the
1456 MIPS32 architecture. Most modern embedded systems with a 32-bit
1457 MIPS processor are based on a MIPS32 processor. If you know the
1458 specific type of processor in your system, choose those that one
1459 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1460 Release 2 of the MIPS32 architecture is available since several
1461 years so chances are you even have a MIPS32 Release 2 processor
1462 in which case you should choose CPU_MIPS32_R2 instead for better
1465 config CPU_MIPS32_R2
1466 bool "MIPS32 Release 2"
1467 depends on SYS_HAS_CPU_MIPS32_R2
1468 select CPU_HAS_PREFETCH
1469 select CPU_HAS_LOAD_STORE_LR
1470 select CPU_SUPPORTS_32BIT_KERNEL
1471 select CPU_SUPPORTS_HIGHMEM
1472 select CPU_SUPPORTS_MSA
1475 Choose this option to build a kernel for release 2 or later of the
1476 MIPS32 architecture. Most modern embedded systems with a 32-bit
1477 MIPS processor are based on a MIPS32 processor. If you know the
1478 specific type of processor in your system, choose those that one
1479 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1481 config CPU_MIPS32_R6
1482 bool "MIPS32 Release 6"
1483 depends on SYS_HAS_CPU_MIPS32_R6
1484 select CPU_HAS_PREFETCH
1485 select CPU_SUPPORTS_32BIT_KERNEL
1486 select CPU_SUPPORTS_HIGHMEM
1487 select CPU_SUPPORTS_MSA
1489 select MIPS_O32_FP64_SUPPORT
1491 Choose this option to build a kernel for release 6 or later of the
1492 MIPS32 architecture. New MIPS processors, starting with the Warrior
1493 family, are based on a MIPS32r6 processor. If you own an older
1494 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1496 config CPU_MIPS64_R1
1497 bool "MIPS64 Release 1"
1498 depends on SYS_HAS_CPU_MIPS64_R1
1499 select CPU_HAS_PREFETCH
1500 select CPU_HAS_LOAD_STORE_LR
1501 select CPU_SUPPORTS_32BIT_KERNEL
1502 select CPU_SUPPORTS_64BIT_KERNEL
1503 select CPU_SUPPORTS_HIGHMEM
1504 select CPU_SUPPORTS_HUGEPAGES
1506 Choose this option to build a kernel for release 1 or later of the
1507 MIPS64 architecture. Many modern embedded systems with a 64-bit
1508 MIPS processor are based on a MIPS64 processor. If you know the
1509 specific type of processor in your system, choose those that one
1510 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1511 Release 2 of the MIPS64 architecture is available since several
1512 years so chances are you even have a MIPS64 Release 2 processor
1513 in which case you should choose CPU_MIPS64_R2 instead for better
1516 config CPU_MIPS64_R2
1517 bool "MIPS64 Release 2"
1518 depends on SYS_HAS_CPU_MIPS64_R2
1519 select CPU_HAS_PREFETCH
1520 select CPU_HAS_LOAD_STORE_LR
1521 select CPU_SUPPORTS_32BIT_KERNEL
1522 select CPU_SUPPORTS_64BIT_KERNEL
1523 select CPU_SUPPORTS_HIGHMEM
1524 select CPU_SUPPORTS_HUGEPAGES
1525 select CPU_SUPPORTS_MSA
1528 Choose this option to build a kernel for release 2 or later of the
1529 MIPS64 architecture. Many modern embedded systems with a 64-bit
1530 MIPS processor are based on a MIPS64 processor. If you know the
1531 specific type of processor in your system, choose those that one
1532 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1534 config CPU_MIPS64_R6
1535 bool "MIPS64 Release 6"
1536 depends on SYS_HAS_CPU_MIPS64_R6
1537 select CPU_HAS_PREFETCH
1538 select CPU_SUPPORTS_32BIT_KERNEL
1539 select CPU_SUPPORTS_64BIT_KERNEL
1540 select CPU_SUPPORTS_HIGHMEM
1541 select CPU_SUPPORTS_MSA
1542 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1545 Choose this option to build a kernel for release 6 or later of the
1546 MIPS64 architecture. New MIPS processors, starting with the Warrior
1547 family, are based on a MIPS64r6 processor. If you own an older
1548 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1552 depends on SYS_HAS_CPU_R3000
1554 select CPU_HAS_LOAD_STORE_LR
1555 select CPU_SUPPORTS_32BIT_KERNEL
1556 select CPU_SUPPORTS_HIGHMEM
1558 Please make sure to pick the right CPU type. Linux/MIPS is not
1559 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1560 *not* work on R4000 machines and vice versa. However, since most
1561 of the supported machines have an R4000 (or similar) CPU, R4x00
1562 might be a safe bet. If the resulting kernel does not work,
1563 try to recompile with R3000.
1567 depends on SYS_HAS_CPU_TX39XX
1568 select CPU_SUPPORTS_32BIT_KERNEL
1569 select CPU_HAS_LOAD_STORE_LR
1573 depends on SYS_HAS_CPU_VR41XX
1574 select CPU_SUPPORTS_32BIT_KERNEL
1575 select CPU_SUPPORTS_64BIT_KERNEL
1576 select CPU_HAS_LOAD_STORE_LR
1578 The options selects support for the NEC VR4100 series of processors.
1579 Only choose this option if you have one of these processors as a
1580 kernel built with this option will not run on any other type of
1581 processor or vice versa.
1585 depends on SYS_HAS_CPU_R4300
1586 select CPU_SUPPORTS_32BIT_KERNEL
1587 select CPU_SUPPORTS_64BIT_KERNEL
1588 select CPU_HAS_LOAD_STORE_LR
1590 MIPS Technologies R4300-series processors.
1594 depends on SYS_HAS_CPU_R4X00
1595 select CPU_SUPPORTS_32BIT_KERNEL
1596 select CPU_SUPPORTS_64BIT_KERNEL
1597 select CPU_SUPPORTS_HUGEPAGES
1598 select CPU_HAS_LOAD_STORE_LR
1600 MIPS Technologies R4000-series processors other than 4300, including
1601 the R4000, R4400, R4600, and 4700.
1605 depends on SYS_HAS_CPU_TX49XX
1606 select CPU_HAS_PREFETCH
1607 select CPU_HAS_LOAD_STORE_LR
1608 select CPU_SUPPORTS_32BIT_KERNEL
1609 select CPU_SUPPORTS_64BIT_KERNEL
1610 select CPU_SUPPORTS_HUGEPAGES
1614 depends on SYS_HAS_CPU_R5000
1615 select CPU_SUPPORTS_32BIT_KERNEL
1616 select CPU_SUPPORTS_64BIT_KERNEL
1617 select CPU_SUPPORTS_HUGEPAGES
1618 select CPU_HAS_LOAD_STORE_LR
1620 MIPS Technologies R5000-series processors other than the Nevada.
1624 depends on SYS_HAS_CPU_R5432
1625 select CPU_SUPPORTS_32BIT_KERNEL
1626 select CPU_SUPPORTS_64BIT_KERNEL
1627 select CPU_SUPPORTS_HUGEPAGES
1628 select CPU_HAS_LOAD_STORE_LR
1632 depends on SYS_HAS_CPU_R5500
1633 select CPU_SUPPORTS_32BIT_KERNEL
1634 select CPU_SUPPORTS_64BIT_KERNEL
1635 select CPU_SUPPORTS_HUGEPAGES
1636 select CPU_HAS_LOAD_STORE_LR
1638 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1643 depends on SYS_HAS_CPU_NEVADA
1644 select CPU_SUPPORTS_32BIT_KERNEL
1645 select CPU_SUPPORTS_64BIT_KERNEL
1646 select CPU_SUPPORTS_HUGEPAGES
1647 select CPU_HAS_LOAD_STORE_LR
1649 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1653 depends on SYS_HAS_CPU_R8000
1654 select CPU_HAS_PREFETCH
1655 select CPU_HAS_LOAD_STORE_LR
1656 select CPU_SUPPORTS_64BIT_KERNEL
1658 MIPS Technologies R8000 processors. Note these processors are
1659 uncommon and the support for them is incomplete.
1663 depends on SYS_HAS_CPU_R10000
1664 select CPU_HAS_PREFETCH
1665 select CPU_HAS_LOAD_STORE_LR
1666 select CPU_SUPPORTS_32BIT_KERNEL
1667 select CPU_SUPPORTS_64BIT_KERNEL
1668 select CPU_SUPPORTS_HIGHMEM
1669 select CPU_SUPPORTS_HUGEPAGES
1671 MIPS Technologies R10000-series processors.
1675 depends on SYS_HAS_CPU_RM7000
1676 select CPU_HAS_PREFETCH
1677 select CPU_HAS_LOAD_STORE_LR
1678 select CPU_SUPPORTS_32BIT_KERNEL
1679 select CPU_SUPPORTS_64BIT_KERNEL
1680 select CPU_SUPPORTS_HIGHMEM
1681 select CPU_SUPPORTS_HUGEPAGES
1685 depends on SYS_HAS_CPU_SB1
1686 select CPU_HAS_LOAD_STORE_LR
1687 select CPU_SUPPORTS_32BIT_KERNEL
1688 select CPU_SUPPORTS_64BIT_KERNEL
1689 select CPU_SUPPORTS_HIGHMEM
1690 select CPU_SUPPORTS_HUGEPAGES
1691 select WEAK_ORDERING
1693 config CPU_CAVIUM_OCTEON
1694 bool "Cavium Octeon processor"
1695 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1696 select CPU_HAS_PREFETCH
1697 select CPU_HAS_LOAD_STORE_LR
1698 select CPU_SUPPORTS_64BIT_KERNEL
1699 select WEAK_ORDERING
1700 select CPU_SUPPORTS_HIGHMEM
1701 select CPU_SUPPORTS_HUGEPAGES
1702 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1703 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1704 select MIPS_L1_CACHE_SHIFT_7
1707 The Cavium Octeon processor is a highly integrated chip containing
1708 many ethernet hardware widgets for networking tasks. The processor
1709 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1710 Full details can be found at http://www.caviumnetworks.com.
1713 bool "Broadcom BMIPS"
1714 depends on SYS_HAS_CPU_BMIPS
1716 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1717 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1718 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1719 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1720 select CPU_SUPPORTS_32BIT_KERNEL
1721 select DMA_NONCOHERENT
1723 select SWAP_IO_SPACE
1724 select WEAK_ORDERING
1725 select CPU_SUPPORTS_HIGHMEM
1726 select CPU_HAS_PREFETCH
1727 select CPU_HAS_LOAD_STORE_LR
1728 select CPU_SUPPORTS_CPUFREQ
1729 select MIPS_EXTERNAL_TIMER
1731 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1734 bool "Netlogic XLR SoC"
1735 depends on SYS_HAS_CPU_XLR
1736 select CPU_HAS_LOAD_STORE_LR
1737 select CPU_SUPPORTS_32BIT_KERNEL
1738 select CPU_SUPPORTS_64BIT_KERNEL
1739 select CPU_SUPPORTS_HIGHMEM
1740 select CPU_SUPPORTS_HUGEPAGES
1741 select WEAK_ORDERING
1742 select WEAK_REORDERING_BEYOND_LLSC
1744 Netlogic Microsystems XLR/XLS processors.
1747 bool "Netlogic XLP SoC"
1748 depends on SYS_HAS_CPU_XLP
1749 select CPU_SUPPORTS_32BIT_KERNEL
1750 select CPU_SUPPORTS_64BIT_KERNEL
1751 select CPU_SUPPORTS_HIGHMEM
1752 select WEAK_ORDERING
1753 select WEAK_REORDERING_BEYOND_LLSC
1754 select CPU_HAS_PREFETCH
1755 select CPU_HAS_LOAD_STORE_LR
1757 select CPU_SUPPORTS_HUGEPAGES
1758 select MIPS_ASID_BITS_VARIABLE
1760 Netlogic Microsystems XLP processors.
1763 config CPU_MIPS32_3_5_FEATURES
1764 bool "MIPS32 Release 3.5 Features"
1765 depends on SYS_HAS_CPU_MIPS32_R3_5
1766 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1768 Choose this option to build a kernel for release 2 or later of the
1769 MIPS32 architecture including features from the 3.5 release such as
1770 support for Enhanced Virtual Addressing (EVA).
1772 config CPU_MIPS32_3_5_EVA
1773 bool "Enhanced Virtual Addressing (EVA)"
1774 depends on CPU_MIPS32_3_5_FEATURES
1778 Choose this option if you want to enable the Enhanced Virtual
1779 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1780 One of its primary benefits is an increase in the maximum size
1781 of lowmem (up to 3GB). If unsure, say 'N' here.
1783 config CPU_MIPS32_R5_FEATURES
1784 bool "MIPS32 Release 5 Features"
1785 depends on SYS_HAS_CPU_MIPS32_R5
1786 depends on CPU_MIPS32_R2
1788 Choose this option to build a kernel for release 2 or later of the
1789 MIPS32 architecture including features from release 5 such as
1790 support for Extended Physical Addressing (XPA).
1792 config CPU_MIPS32_R5_XPA
1793 bool "Extended Physical Addressing (XPA)"
1794 depends on CPU_MIPS32_R5_FEATURES
1796 depends on !PAGE_SIZE_4KB
1797 depends on SYS_SUPPORTS_HIGHMEM
1800 select PHYS_ADDR_T_64BIT
1803 Choose this option if you want to enable the Extended Physical
1804 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1805 benefit is to increase physical addressing equal to or greater
1806 than 40 bits. Note that this has the side effect of turning on
1807 64-bit addressing which in turn makes the PTEs 64-bit in size.
1808 If unsure, say 'N' here.
1811 config CPU_NOP_WORKAROUNDS
1814 config CPU_JUMP_WORKAROUNDS
1817 config CPU_LOONGSON2F_WORKAROUNDS
1818 bool "Loongson 2F Workarounds"
1820 select CPU_NOP_WORKAROUNDS
1821 select CPU_JUMP_WORKAROUNDS
1823 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1824 require workarounds. Without workarounds the system may hang
1825 unexpectedly. For more information please refer to the gas
1826 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1828 Loongson 2F03 and later have fixed these issues and no workarounds
1829 are needed. The workarounds have no significant side effect on them
1830 but may decrease the performance of the system so this option should
1831 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1834 If unsure, please say Y.
1835 endif # CPU_LOONGSON2F
1837 config SYS_SUPPORTS_ZBOOT
1839 select HAVE_KERNEL_GZIP
1840 select HAVE_KERNEL_BZIP2
1841 select HAVE_KERNEL_LZ4
1842 select HAVE_KERNEL_LZMA
1843 select HAVE_KERNEL_LZO
1844 select HAVE_KERNEL_XZ
1846 config SYS_SUPPORTS_ZBOOT_UART16550
1848 select SYS_SUPPORTS_ZBOOT
1850 config SYS_SUPPORTS_ZBOOT_UART_PROM
1852 select SYS_SUPPORTS_ZBOOT
1854 config CPU_LOONGSON2
1856 select CPU_SUPPORTS_32BIT_KERNEL
1857 select CPU_SUPPORTS_64BIT_KERNEL
1858 select CPU_SUPPORTS_HIGHMEM
1859 select CPU_SUPPORTS_HUGEPAGES
1860 select ARCH_HAS_PHYS_TO_DMA
1861 select CPU_HAS_LOAD_STORE_LR
1863 config CPU_LOONGSON1
1867 select CPU_HAS_PREFETCH
1868 select CPU_HAS_LOAD_STORE_LR
1869 select CPU_SUPPORTS_32BIT_KERNEL
1870 select CPU_SUPPORTS_HIGHMEM
1871 select CPU_SUPPORTS_CPUFREQ
1873 config CPU_BMIPS32_3300
1874 select SMP_UP if SMP
1877 config CPU_BMIPS4350
1879 select SYS_SUPPORTS_SMP
1880 select SYS_SUPPORTS_HOTPLUG_CPU
1882 config CPU_BMIPS4380
1884 select MIPS_L1_CACHE_SHIFT_6
1885 select SYS_SUPPORTS_SMP
1886 select SYS_SUPPORTS_HOTPLUG_CPU
1889 config CPU_BMIPS5000
1891 select MIPS_CPU_SCACHE
1892 select MIPS_L1_CACHE_SHIFT_7
1893 select SYS_SUPPORTS_SMP
1894 select SYS_SUPPORTS_HOTPLUG_CPU
1897 config SYS_HAS_CPU_LOONGSON3
1899 select CPU_SUPPORTS_CPUFREQ
1902 config SYS_HAS_CPU_LOONGSON2E
1905 config SYS_HAS_CPU_LOONGSON2F
1907 select CPU_SUPPORTS_CPUFREQ
1908 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1909 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1911 config SYS_HAS_CPU_LOONGSON1B
1914 config SYS_HAS_CPU_LOONGSON1C
1917 config SYS_HAS_CPU_MIPS32_R1
1920 config SYS_HAS_CPU_MIPS32_R2
1923 config SYS_HAS_CPU_MIPS32_R3_5
1926 config SYS_HAS_CPU_MIPS32_R5
1929 config SYS_HAS_CPU_MIPS32_R6
1932 config SYS_HAS_CPU_MIPS64_R1
1935 config SYS_HAS_CPU_MIPS64_R2
1938 config SYS_HAS_CPU_MIPS64_R6
1941 config SYS_HAS_CPU_R3000
1944 config SYS_HAS_CPU_TX39XX
1947 config SYS_HAS_CPU_VR41XX
1950 config SYS_HAS_CPU_R4300
1953 config SYS_HAS_CPU_R4X00
1956 config SYS_HAS_CPU_TX49XX
1959 config SYS_HAS_CPU_R5000
1962 config SYS_HAS_CPU_R5432
1965 config SYS_HAS_CPU_R5500
1968 config SYS_HAS_CPU_NEVADA
1971 config SYS_HAS_CPU_R8000
1974 config SYS_HAS_CPU_R10000
1977 config SYS_HAS_CPU_RM7000
1980 config SYS_HAS_CPU_SB1
1983 config SYS_HAS_CPU_CAVIUM_OCTEON
1986 config SYS_HAS_CPU_BMIPS
1989 config SYS_HAS_CPU_BMIPS32_3300
1991 select SYS_HAS_CPU_BMIPS
1993 config SYS_HAS_CPU_BMIPS4350
1995 select SYS_HAS_CPU_BMIPS
1997 config SYS_HAS_CPU_BMIPS4380
1999 select SYS_HAS_CPU_BMIPS
2001 config SYS_HAS_CPU_BMIPS5000
2003 select SYS_HAS_CPU_BMIPS
2005 config SYS_HAS_CPU_XLR
2008 config SYS_HAS_CPU_XLP
2012 # CPU may reorder R->R, R->W, W->R, W->W
2013 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2015 config WEAK_ORDERING
2019 # CPU may reorder reads and writes beyond LL/SC
2020 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2022 config WEAK_REORDERING_BEYOND_LLSC
2027 # These two indicate any level of the MIPS32 and MIPS64 architecture
2031 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2035 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2038 # These two indicate the revision of the architecture, either Release 1 or Release 2
2042 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2046 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2052 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2054 select HAVE_ARCH_BITREVERSE
2055 select MIPS_ASID_BITS_VARIABLE
2056 select MIPS_CRC_SUPPORT
2065 config SYS_SUPPORTS_32BIT_KERNEL
2067 config SYS_SUPPORTS_64BIT_KERNEL
2069 config CPU_SUPPORTS_32BIT_KERNEL
2071 config CPU_SUPPORTS_64BIT_KERNEL
2073 config CPU_SUPPORTS_CPUFREQ
2075 config CPU_SUPPORTS_ADDRWINCFG
2077 config CPU_SUPPORTS_HUGEPAGES
2079 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2081 config MIPS_PGD_C0_CONTEXT
2083 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2086 # Set to y for ptrace access to watch registers.
2088 config HARDWARE_WATCHPOINTS
2090 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2095 prompt "Kernel code model"
2097 You should only select this option if you have a workload that
2098 actually benefits from 64-bit processing or if your machine has
2099 large memory. You will only be presented a single option in this
2100 menu if your system does not support both 32-bit and 64-bit kernels.
2103 bool "32-bit kernel"
2104 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2107 Select this option if you want to build a 32-bit kernel.
2110 bool "64-bit kernel"
2111 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2113 Select this option if you want to build a 64-bit kernel.
2118 bool "KVM Guest Kernel"
2119 depends on BROKEN_ON_SMP
2121 Select this option if building a guest kernel for KVM (Trap & Emulate)
2124 config KVM_GUEST_TIMER_FREQ
2125 int "Count/Compare Timer Frequency (MHz)"
2126 depends on KVM_GUEST
2129 Set this to non-zero if building a guest kernel for KVM to skip RTC
2130 emulation when determining guest CPU Frequency. Instead, the guest's
2131 timer frequency is specified directly.
2133 config MIPS_VA_BITS_48
2134 bool "48 bits virtual memory"
2137 Support a maximum at least 48 bits of application virtual
2138 memory. Default is 40 bits or less, depending on the CPU.
2139 For page sizes 16k and above, this option results in a small
2140 memory overhead for page tables. For 4k page size, a fourth
2141 level of page tables is added which imposes both a memory
2142 overhead as well as slower TLB fault handling.
2147 prompt "Kernel page size"
2148 default PAGE_SIZE_4KB
2150 config PAGE_SIZE_4KB
2152 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2154 This option select the standard 4kB Linux page size. On some
2155 R3000-family processors this is the only available page size. Using
2156 4kB page size will minimize memory consumption and is therefore
2157 recommended for low memory systems.
2159 config PAGE_SIZE_8KB
2161 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2162 depends on !MIPS_VA_BITS_48
2164 Using 8kB page size will result in higher performance kernel at
2165 the price of higher memory consumption. This option is available
2166 only on R8000 and cnMIPS processors. Note that you will need a
2167 suitable Linux distribution to support this.
2169 config PAGE_SIZE_16KB
2171 depends on !CPU_R3000 && !CPU_TX39XX
2173 Using 16kB page size will result in higher performance kernel at
2174 the price of higher memory consumption. This option is available on
2175 all non-R3000 family processors. Note that you will need a suitable
2176 Linux distribution to support this.
2178 config PAGE_SIZE_32KB
2180 depends on CPU_CAVIUM_OCTEON
2181 depends on !MIPS_VA_BITS_48
2183 Using 32kB page size will result in higher performance kernel at
2184 the price of higher memory consumption. This option is available
2185 only on cnMIPS cores. Note that you will need a suitable Linux
2186 distribution to support this.
2188 config PAGE_SIZE_64KB
2190 depends on !CPU_R3000 && !CPU_TX39XX
2192 Using 64kB page size will result in higher performance kernel at
2193 the price of higher memory consumption. This option is available on
2194 all non-R3000 family processor. Not that at the time of this
2195 writing this option is still high experimental.
2199 config FORCE_MAX_ZONEORDER
2200 int "Maximum zone order"
2201 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2202 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2203 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2204 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2205 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2206 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2210 The kernel memory allocator divides physically contiguous memory
2211 blocks into "zones", where each zone is a power of two number of
2212 pages. This option selects the largest power of two that the kernel
2213 keeps in the memory allocator. If you need to allocate very large
2214 blocks of physically contiguous memory, then you may need to
2215 increase this value.
2217 This config option is actually maximum order plus one. For example,
2218 a value of 11 means that the largest free memory block is 2^10 pages.
2220 The page size is not necessarily 4KB. Keep this in mind
2221 when choosing a value for this option.
2226 config IP22_CPU_SCACHE
2231 # Support for a MIPS32 / MIPS64 style S-caches
2233 config MIPS_CPU_SCACHE
2237 config R5000_CPU_SCACHE
2241 config RM7000_CPU_SCACHE
2245 config SIBYTE_DMA_PAGEOPS
2246 bool "Use DMA to clear/copy pages"
2249 Instead of using the CPU to zero and copy pages, use a Data Mover
2250 channel. These DMA channels are otherwise unused by the standard
2251 SiByte Linux port. Seems to give a small performance benefit.
2253 config CPU_HAS_PREFETCH
2256 config CPU_GENERIC_DUMP_TLB
2258 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
2262 default y if !(CPU_R3000 || CPU_TX39XX)
2264 config CPU_R4K_CACHE_TLB
2266 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2269 bool "MIPS MT SMP support (1 TC on each available VPE)"
2271 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2272 select CPU_MIPSR2_IRQ_VI
2273 select CPU_MIPSR2_IRQ_EI
2278 select SYS_SUPPORTS_SMP
2279 select SYS_SUPPORTS_SCHED_SMT
2280 select MIPS_PERF_SHARED_TC_COUNTERS
2282 This is a kernel model which is known as SMVP. This is supported
2283 on cores with the MT ASE and uses the available VPEs to implement
2284 virtual processors which supports SMP. This is equivalent to the
2285 Intel Hyperthreading feature. For further information go to
2286 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2292 bool "SMT (multithreading) scheduler support"
2293 depends on SYS_SUPPORTS_SCHED_SMT
2296 SMT scheduler support improves the CPU scheduler's decision making
2297 when dealing with MIPS MT enabled cores at a cost of slightly
2298 increased overhead in some places. If unsure say N here.
2300 config SYS_SUPPORTS_SCHED_SMT
2303 config SYS_SUPPORTS_MULTITHREADING
2306 config MIPS_MT_FPAFF
2307 bool "Dynamic FPU affinity for FP-intensive threads"
2309 depends on MIPS_MT_SMP
2311 config MIPSR2_TO_R6_EMULATOR
2312 bool "MIPS R2-to-R6 emulator"
2313 depends on CPU_MIPSR6
2316 Choose this option if you want to run non-R6 MIPS userland code.
2317 Even if you say 'Y' here, the emulator will still be disabled by
2318 default. You can enable it using the 'mipsr2emu' kernel option.
2319 The only reason this is a build-time option is to save ~14K from the
2322 config SYS_SUPPORTS_VPE_LOADER
2324 depends on SYS_SUPPORTS_MULTITHREADING
2326 Indicates that the platform supports the VPE loader, and provides
2329 config MIPS_VPE_LOADER
2330 bool "VPE loader support."
2331 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2332 select CPU_MIPSR2_IRQ_VI
2333 select CPU_MIPSR2_IRQ_EI
2336 Includes a loader for loading an elf relocatable object
2337 onto another VPE and running it.
2339 config MIPS_VPE_LOADER_CMP
2342 depends on MIPS_VPE_LOADER && MIPS_CMP
2344 config MIPS_VPE_LOADER_MT
2347 depends on MIPS_VPE_LOADER && !MIPS_CMP
2349 config MIPS_VPE_LOADER_TOM
2350 bool "Load VPE program into memory hidden from linux"
2351 depends on MIPS_VPE_LOADER
2354 The loader can use memory that is present but has been hidden from
2355 Linux using the kernel command line option "mem=xxMB". It's up to
2356 you to ensure the amount you put in the option and the space your
2357 program requires is less or equal to the amount physically present.
2359 config MIPS_VPE_APSP_API
2360 bool "Enable support for AP/SP API (RTLX)"
2361 depends on MIPS_VPE_LOADER
2363 config MIPS_VPE_APSP_API_CMP
2366 depends on MIPS_VPE_APSP_API && MIPS_CMP
2368 config MIPS_VPE_APSP_API_MT
2371 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2374 bool "MIPS CMP framework support (DEPRECATED)"
2375 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2378 select SYS_SUPPORTS_SMP
2379 select WEAK_ORDERING
2382 Select this if you are using a bootloader which implements the "CMP
2383 framework" protocol (ie. YAMON) and want your kernel to make use of
2384 its ability to start secondary CPUs.
2386 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2390 bool "MIPS Coherent Processing System support"
2391 depends on SYS_SUPPORTS_MIPS_CPS
2393 select MIPS_CPS_PM if HOTPLUG_CPU
2395 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2396 select SYS_SUPPORTS_HOTPLUG_CPU
2397 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2398 select SYS_SUPPORTS_SMP
2399 select WEAK_ORDERING
2401 Select this if you wish to run an SMP kernel across multiple cores
2402 within a MIPS Coherent Processing System. When this option is
2403 enabled the kernel will probe for other cores and boot them with
2404 no external assistance. It is safe to enable this when hardware
2405 support is unavailable.
2418 config SB1_PASS_2_WORKAROUNDS
2420 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2423 config SB1_PASS_2_1_WORKAROUNDS
2425 depends on CPU_SB1 && CPU_SB1_PASS_2
2430 prompt "SmartMIPS or microMIPS ASE support"
2432 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2435 Select this if you want neither microMIPS nor SmartMIPS support
2437 config CPU_HAS_SMARTMIPS
2438 depends on SYS_SUPPORTS_SMARTMIPS
2441 SmartMIPS is a extension of the MIPS32 architecture aimed at
2442 increased security at both hardware and software level for
2443 smartcards. Enabling this option will allow proper use of the
2444 SmartMIPS instructions by Linux applications. However a kernel with
2445 this option will not work on a MIPS core without SmartMIPS core. If
2446 you don't know you probably don't have SmartMIPS and should say N
2449 config CPU_MICROMIPS
2450 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2453 When this option is enabled the kernel will be built using the
2459 bool "Support for the MIPS SIMD Architecture"
2460 depends on CPU_SUPPORTS_MSA
2461 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2463 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2464 and a set of SIMD instructions to operate on them. When this option
2465 is enabled the kernel will support allocating & switching MSA
2466 vector register contexts. If you know that your kernel will only be
2467 running on CPUs which do not support MSA or that your userland will
2468 not be making use of it then you may wish to say N here to reduce
2469 the size & complexity of your kernel.
2482 config CPU_HAS_LOAD_STORE_LR
2485 CPU has support for unaligned load and store instructions:
2486 LWL, LWR, SWL, SWR (Load/store word left/right).
2487 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit systems).
2490 # Vectored interrupt mode is an R2 feature
2492 config CPU_MIPSR2_IRQ_VI
2496 # Extended interrupt mode is an R2 feature
2498 config CPU_MIPSR2_IRQ_EI
2503 depends on !CPU_R3000
2509 config CPU_DADDI_WORKAROUNDS
2512 config CPU_R4000_WORKAROUNDS
2514 select CPU_R4400_WORKAROUNDS
2516 config CPU_R4400_WORKAROUNDS
2519 config MIPS_ASID_SHIFT
2521 default 6 if CPU_R3000 || CPU_TX39XX
2522 default 4 if CPU_R8000
2525 config MIPS_ASID_BITS
2527 default 0 if MIPS_ASID_BITS_VARIABLE
2528 default 6 if CPU_R3000 || CPU_TX39XX
2531 config MIPS_ASID_BITS_VARIABLE
2534 config MIPS_CRC_SUPPORT
2538 # - Highmem only makes sense for the 32-bit kernel.
2539 # - The current highmem code will only work properly on physically indexed
2540 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2541 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2542 # moment we protect the user and offer the highmem option only on machines
2543 # where it's known to be safe. This will not offer highmem on a few systems
2544 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2545 # indexed CPUs but we're playing safe.
2546 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2547 # know they might have memory configurations that could make use of highmem
2551 bool "High Memory Support"
2552 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2554 config CPU_SUPPORTS_HIGHMEM
2557 config SYS_SUPPORTS_HIGHMEM
2560 config SYS_SUPPORTS_SMARTMIPS
2563 config SYS_SUPPORTS_MICROMIPS
2566 config SYS_SUPPORTS_MIPS16
2569 This option must be set if a kernel might be executed on a MIPS16-
2570 enabled CPU even if MIPS16 is not actually being used. In other
2571 words, it makes the kernel MIPS16-tolerant.
2573 config CPU_SUPPORTS_MSA
2576 config ARCH_FLATMEM_ENABLE
2578 depends on !NUMA && !CPU_LOONGSON2
2580 config ARCH_DISCONTIGMEM_ENABLE
2582 default y if SGI_IP27
2584 Say Y to support efficient handling of discontiguous physical memory,
2585 for architectures which are either NUMA (Non-Uniform Memory Access)
2586 or have huge holes in the physical address space for other reasons.
2587 See <file:Documentation/vm/numa.rst> for more.
2589 config ARCH_SPARSEMEM_ENABLE
2591 select SPARSEMEM_STATIC
2595 depends on SYS_SUPPORTS_NUMA
2597 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2598 Access). This option improves performance on systems with more
2599 than two nodes; on two node systems it is generally better to
2600 leave it disabled; on single node systems disable this option
2603 config SYS_SUPPORTS_NUMA
2607 bool "Relocatable kernel"
2608 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2610 This builds a kernel image that retains relocation information
2611 so it can be loaded someplace besides the default 1MB.
2612 The relocations make the kernel binary about 15% larger,
2613 but are discarded at runtime
2615 config RELOCATION_TABLE_SIZE
2616 hex "Relocation table size"
2617 depends on RELOCATABLE
2618 range 0x0 0x01000000
2619 default "0x00100000"
2621 A table of relocation data will be appended to the kernel binary
2622 and parsed at boot to fix up the relocated kernel.
2624 This option allows the amount of space reserved for the table to be
2625 adjusted, although the default of 1Mb should be ok in most cases.
2627 The build will fail and a valid size suggested if this is too small.
2629 If unsure, leave at the default value.
2631 config RANDOMIZE_BASE
2632 bool "Randomize the address of the kernel image"
2633 depends on RELOCATABLE
2635 Randomizes the physical and virtual address at which the
2636 kernel image is loaded, as a security feature that
2637 deters exploit attempts relying on knowledge of the location
2638 of kernel internals.
2640 Entropy is generated using any coprocessor 0 registers available.
2642 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2646 config RANDOMIZE_BASE_MAX_OFFSET
2647 hex "Maximum kASLR offset" if EXPERT
2648 depends on RANDOMIZE_BASE
2649 range 0x0 0x40000000 if EVA || 64BIT
2650 range 0x0 0x08000000
2651 default "0x01000000"
2653 When kASLR is active, this provides the maximum offset that will
2654 be applied to the kernel image. It should be set according to the
2655 amount of physical RAM available in the target system minus
2656 PHYSICAL_START and must be a power of 2.
2658 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2659 EVA or 64-bit. The default is 16Mb.
2664 depends on NEED_MULTIPLE_NODES
2666 config HW_PERF_EVENTS
2667 bool "Enable hardware performance counter support for perf events"
2668 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2671 Enable hardware performance counter support for perf events. If
2672 disabled, perf events will use software events only.
2675 bool "Multi-Processing support"
2676 depends on SYS_SUPPORTS_SMP
2678 This enables support for systems with more than one CPU. If you have
2679 a system with only one CPU, say N. If you have a system with more
2680 than one CPU, say Y.
2682 If you say N here, the kernel will run on uni- and multiprocessor
2683 machines, but will use only one CPU of a multiprocessor machine. If
2684 you say Y here, the kernel will run on many, but not all,
2685 uniprocessor machines. On a uniprocessor machine, the kernel
2686 will run faster if you say N here.
2688 People using multiprocessor machines who say Y here should also say
2689 Y to "Enhanced Real Time Clock Support", below.
2691 See also the SMP-HOWTO available at
2692 <http://www.tldp.org/docs.html#howto>.
2694 If you don't know what to do here, say N.
2697 bool "Support for hot-pluggable CPUs"
2698 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2700 Say Y here to allow turning CPUs off and on. CPUs can be
2701 controlled through /sys/devices/system/cpu.
2702 (Note: power management support will enable this option
2703 automatically on SMP systems. )
2704 Say N if you want to disable CPU hotplug.
2709 config SYS_SUPPORTS_MIPS_CMP
2712 config SYS_SUPPORTS_MIPS_CPS
2715 config SYS_SUPPORTS_SMP
2718 config NR_CPUS_DEFAULT_4
2721 config NR_CPUS_DEFAULT_8
2724 config NR_CPUS_DEFAULT_16
2727 config NR_CPUS_DEFAULT_32
2730 config NR_CPUS_DEFAULT_64
2734 int "Maximum number of CPUs (2-256)"
2737 default "4" if NR_CPUS_DEFAULT_4
2738 default "8" if NR_CPUS_DEFAULT_8
2739 default "16" if NR_CPUS_DEFAULT_16
2740 default "32" if NR_CPUS_DEFAULT_32
2741 default "64" if NR_CPUS_DEFAULT_64
2743 This allows you to specify the maximum number of CPUs which this
2744 kernel will support. The maximum supported value is 32 for 32-bit
2745 kernel and 64 for 64-bit kernels; the minimum value which makes
2746 sense is 1 for Qemu (useful only for kernel debugging purposes)
2747 and 2 for all others.
2749 This is purely to save memory - each supported CPU adds
2750 approximately eight kilobytes to the kernel image. For best
2751 performance should round up your number of processors to the next
2754 config MIPS_PERF_SHARED_TC_COUNTERS
2757 config MIPS_NR_CPU_NR_MAP_1024
2760 config MIPS_NR_CPU_NR_MAP
2763 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2764 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2767 # Timer Interrupt Frequency Configuration
2771 prompt "Timer frequency"
2774 Allows the configuration of the timer frequency.
2777 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2780 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2783 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2786 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2789 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2792 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2795 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2798 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2802 config SYS_SUPPORTS_24HZ
2805 config SYS_SUPPORTS_48HZ
2808 config SYS_SUPPORTS_100HZ
2811 config SYS_SUPPORTS_128HZ
2814 config SYS_SUPPORTS_250HZ
2817 config SYS_SUPPORTS_256HZ
2820 config SYS_SUPPORTS_1000HZ
2823 config SYS_SUPPORTS_1024HZ
2826 config SYS_SUPPORTS_ARBIT_HZ
2828 default y if !SYS_SUPPORTS_24HZ && \
2829 !SYS_SUPPORTS_48HZ && \
2830 !SYS_SUPPORTS_100HZ && \
2831 !SYS_SUPPORTS_128HZ && \
2832 !SYS_SUPPORTS_250HZ && \
2833 !SYS_SUPPORTS_256HZ && \
2834 !SYS_SUPPORTS_1000HZ && \
2835 !SYS_SUPPORTS_1024HZ
2841 default 100 if HZ_100
2842 default 128 if HZ_128
2843 default 250 if HZ_250
2844 default 256 if HZ_256
2845 default 1000 if HZ_1000
2846 default 1024 if HZ_1024
2849 def_bool HIGH_RES_TIMERS
2852 bool "Kexec system call"
2855 kexec is a system call that implements the ability to shutdown your
2856 current kernel, and to start another kernel. It is like a reboot
2857 but it is independent of the system firmware. And like a reboot
2858 you can start any kernel with it, not just Linux.
2860 The name comes from the similarity to the exec system call.
2862 It is an ongoing process to be certain the hardware in a machine
2863 is properly shutdown, so do not be surprised if this code does not
2864 initially work for you. As of this writing the exact hardware
2865 interface is strongly in flux, so no good recommendation can be
2869 bool "Kernel crash dumps"
2871 Generate crash dump after being started by kexec.
2872 This should be normally only set in special crash dump kernels
2873 which are loaded in the main kernel with kexec-tools into
2874 a specially reserved region and then later executed after
2875 a crash by kdump/kexec. The crash dump kernel must be compiled
2876 to a memory address not used by the main kernel or firmware using
2879 config PHYSICAL_START
2880 hex "Physical address where the kernel is loaded"
2881 default "0xffffffff84000000"
2882 depends on CRASH_DUMP
2884 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2885 If you plan to use kernel for capturing the crash dump change
2886 this value to start of the reserved region (the "X" value as
2887 specified in the "crashkernel=YM@XM" command line boot parameter
2888 passed to the panic-ed kernel).
2891 bool "Enable seccomp to safely compute untrusted bytecode"
2895 This kernel feature is useful for number crunching applications
2896 that may need to compute untrusted bytecode during their
2897 execution. By using pipes or other transports made available to
2898 the process as file descriptors supporting the read/write
2899 syscalls, it's possible to isolate those applications in
2900 their own address space using seccomp. Once seccomp is
2901 enabled via /proc/<pid>/seccomp, it cannot be disabled
2902 and the task is only allowed to execute a few safe syscalls
2903 defined by each seccomp mode.
2905 If unsure, say Y. Only embedded should say N here.
2907 config MIPS_O32_FP64_SUPPORT
2908 bool "Support for O32 binaries using 64-bit FP"
2909 depends on 32BIT || MIPS32_O32
2911 When this is enabled, the kernel will support use of 64-bit floating
2912 point registers with binaries using the O32 ABI along with the
2913 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2914 32-bit MIPS systems this support is at the cost of increasing the
2915 size and complexity of the compiled FPU emulator. Thus if you are
2916 running a MIPS32 system and know that none of your userland binaries
2917 will require 64-bit floating point, you may wish to reduce the size
2918 of your kernel & potentially improve FP emulation performance by
2921 Although binutils currently supports use of this flag the details
2922 concerning its effect upon the O32 ABI in userland are still being
2923 worked on. In order to avoid userland becoming dependant upon current
2924 behaviour before the details have been finalised, this option should
2925 be considered experimental and only enabled by those working upon
2933 select OF_EARLY_FLATTREE
2943 prompt "Kernel appended dtb support" if USE_OF
2944 default MIPS_NO_APPENDED_DTB
2946 config MIPS_NO_APPENDED_DTB
2949 Do not enable appended dtb support.
2951 config MIPS_ELF_APPENDED_DTB
2954 With this option, the boot code will look for a device tree binary
2955 DTB) included in the vmlinux ELF section .appended_dtb. By default
2956 it is empty and the DTB can be appended using binutils command
2959 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2961 This is meant as a backward compatiblity convenience for those
2962 systems with a bootloader that can't be upgraded to accommodate
2963 the documented boot protocol using a device tree.
2965 config MIPS_RAW_APPENDED_DTB
2966 bool "vmlinux.bin or vmlinuz.bin"
2968 With this option, the boot code will look for a device tree binary
2969 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2970 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2972 This is meant as a backward compatibility convenience for those
2973 systems with a bootloader that can't be upgraded to accommodate
2974 the documented boot protocol using a device tree.
2976 Beware that there is very little in terms of protection against
2977 this option being confused by leftover garbage in memory that might
2978 look like a DTB header after a reboot if no actual DTB is appended
2979 to vmlinux.bin. Do not leave this option active in a production kernel
2980 if you don't intend to always append a DTB.
2984 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2985 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2988 default MIPS_CMDLINE_FROM_BOOTLOADER
2990 config MIPS_CMDLINE_FROM_DTB
2992 bool "Dtb kernel arguments if available"
2994 config MIPS_CMDLINE_DTB_EXTEND
2996 bool "Extend dtb kernel arguments with bootloader arguments"
2998 config MIPS_CMDLINE_FROM_BOOTLOADER
2999 bool "Bootloader kernel arguments if available"
3001 config MIPS_CMDLINE_BUILTIN_EXTEND
3002 depends on CMDLINE_BOOL
3003 bool "Extend builtin kernel arguments with bootloader arguments"
3008 config LOCKDEP_SUPPORT
3012 config STACKTRACE_SUPPORT
3016 config HAVE_LATENCYTOP_SUPPORT
3020 config PGTABLE_LEVELS
3022 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3023 default 3 if 64BIT && !PAGE_SIZE_64KB
3026 config MIPS_AUTO_PFN_OFFSET
3029 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3037 bool "Support for PCI controller"
3038 depends on HW_HAS_PCI
3041 Find out whether you have a PCI motherboard. PCI is the name of a
3042 bus system, i.e. the way the CPU talks to the other stuff inside
3043 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
3047 bool "Support for HT-linked PCI"
3049 depends on CPU_LOONGSON3
3053 Loongson family machines use Hyper-Transport bus for inter-core
3054 connection and device connection. The PCI bus is a subordinate
3055 linked at HT. Choose Y for Loongson-3 based machines.
3060 config PCI_DOMAINS_GENERIC
3063 config PCI_DRIVERS_GENERIC
3064 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3067 config PCI_DRIVERS_LEGACY
3068 def_bool !PCI_DRIVERS_GENERIC
3069 select NO_GENERIC_PCI_IOPORT_MAP
3071 source "drivers/pci/Kconfig"
3074 # ISA support is now enabled via select. Too many systems still have the one
3075 # or other ISA chip on the board that users don't know about so don't expect
3076 # users to choose the right thing ...
3083 depends on HW_HAS_EISA
3085 select GENERIC_ISA_DMA
3087 The Extended Industry Standard Architecture (EISA) bus was
3088 developed as an open alternative to the IBM MicroChannel bus.
3090 The EISA bus provided some of the features of the IBM MicroChannel
3091 bus while maintaining backward compatibility with cards made for
3092 the older ISA bus. The EISA bus saw limited use between 1988 and
3093 1995 when it was made obsolete by the PCI bus.
3095 Say Y here if you are building a kernel for an EISA-based machine.
3099 source "drivers/eisa/Kconfig"
3102 bool "TURBOchannel support"
3103 depends on MACH_DECSTATION
3105 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3106 processors. TURBOchannel programming specifications are available
3108 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3110 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3111 Linux driver support status is documented at:
3112 <http://www.linux-mips.org/wiki/DECstation>
3118 config ARCH_MMAP_RND_BITS_MIN
3122 config ARCH_MMAP_RND_BITS_MAX
3126 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3129 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3136 select MIPS_EXTERNAL_TIMER
3144 source "drivers/pcmcia/Kconfig"
3151 tristate "RapidIO support"
3152 depends on HAS_RAPIDIO || PCI
3154 If you say Y here, the kernel will include drivers and
3155 infrastructure code to support RapidIO interconnect devices.
3157 source "drivers/rapidio/Kconfig"
3164 config MIPS32_COMPAT
3170 config SYSVIPC_COMPAT
3174 bool "Kernel support for o32 binaries"
3176 select ARCH_WANT_OLD_COMPAT_IPC
3178 select MIPS32_COMPAT
3179 select SYSVIPC_COMPAT if SYSVIPC
3181 Select this option if you want to run o32 binaries. These are pure
3182 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3183 existing binaries are in this format.
3188 bool "Kernel support for n32 binaries"
3190 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3192 select MIPS32_COMPAT
3193 select SYSVIPC_COMPAT if SYSVIPC
3195 Select this option if you want to run n32 binaries. These are
3196 64-bit binaries using 32-bit quantities for addressing and certain
3197 data that would normally be 64-bit. They are used in special
3204 default y if MIPS32_O32 || MIPS32_N32
3207 menu "Power management options"
3209 config ARCH_HIBERNATION_POSSIBLE
3211 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3213 config ARCH_SUSPEND_POSSIBLE
3215 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3217 source "kernel/power/Kconfig"
3221 config MIPS_EXTERNAL_TIMER
3224 menu "CPU Power Management"
3226 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3227 source "drivers/cpufreq/Kconfig"
3230 source "drivers/cpuidle/Kconfig"
3234 source "drivers/firmware/Kconfig"
3236 source "arch/mips/kvm/Kconfig"