1 # SPDX-License-Identifier: GPL-2.0
5 select ARCH_32BIT_OFF_T if !64BIT
6 select ARCH_BINFMT_ELF_STATE if MIPS_FP_SUPPORT
7 select ARCH_CLOCKSOURCE_DATA
8 select ARCH_HAS_ELF_RANDOMIZE
9 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
10 select ARCH_HAS_UBSAN_SANITIZE_ALL
11 select ARCH_SUPPORTS_UPROBES
12 select ARCH_USE_BUILTIN_BSWAP
13 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
14 select ARCH_USE_QUEUED_RWLOCKS
15 select ARCH_USE_QUEUED_SPINLOCKS
16 select ARCH_WANT_IPC_PARSE_VERSION
17 select BUILDTIME_EXTABLE_SORT
18 select CLONE_BACKWARDS
19 select CPU_NO_EFFICIENT_FFS if (TARGET_ISA_REV < 1)
20 select CPU_PM if CPU_IDLE
21 select GENERIC_ATOMIC64 if !64BIT
22 select GENERIC_CLOCKEVENTS
23 select GENERIC_CMOS_UPDATE
24 select GENERIC_CPU_AUTOPROBE
26 select GENERIC_IRQ_PROBE
27 select GENERIC_IRQ_SHOW
28 select GENERIC_ISA_DMA if EISA
29 select GENERIC_LIB_ASHLDI3
30 select GENERIC_LIB_ASHRDI3
31 select GENERIC_LIB_CMPDI2
32 select GENERIC_LIB_LSHRDI3
33 select GENERIC_LIB_UCMPDI2
34 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
35 select GENERIC_SMP_IDLE_THREAD
36 select GENERIC_TIME_VSYSCALL
37 select GUP_GET_PTE_LOW_HIGH if CPU_MIPS32 && PHYS_ADDR_T_64BIT
38 select HANDLE_DOMAIN_IRQ
39 select HAVE_ARCH_COMPILER_H
40 select HAVE_ARCH_JUMP_LABEL
42 select HAVE_ARCH_MMAP_RND_BITS if MMU
43 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
44 select HAVE_ARCH_SECCOMP_FILTER
45 select HAVE_ARCH_TRACEHOOK
46 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES
47 select HAVE_EBPF_JIT if (!CPU_MICROMIPS)
48 select HAVE_CONTEXT_TRACKING
49 select HAVE_COPY_THREAD_TLS
50 select HAVE_C_RECORDMCOUNT
51 select HAVE_DEBUG_KMEMLEAK
52 select HAVE_DEBUG_STACKOVERFLOW
53 select HAVE_DMA_CONTIGUOUS
54 select HAVE_DYNAMIC_FTRACE
55 select HAVE_EXIT_THREAD
57 select HAVE_FTRACE_MCOUNT_RECORD
58 select HAVE_FUNCTION_GRAPH_TRACER
59 select HAVE_FUNCTION_TRACER
61 select HAVE_IOREMAP_PROT
62 select HAVE_IRQ_EXIT_ON_IRQ_STACK
63 select HAVE_IRQ_TIME_ACCOUNTING
65 select HAVE_KRETPROBES
66 select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
67 select HAVE_MEMBLOCK_NODE_MAP
68 select HAVE_MOD_ARCH_SPECIFIC
71 select HAVE_PERF_EVENTS
72 select HAVE_REGS_AND_STACK_ACCESS_API
74 select HAVE_STACKPROTECTOR
75 select HAVE_SYSCALL_TRACEPOINTS
76 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
77 select IRQ_FORCED_THREADING
79 select MODULES_USE_ELF_RELA if MODULES && 64BIT
80 select MODULES_USE_ELF_REL if MODULES
81 select PERF_USE_VMALLOC
83 select SYSCTL_EXCEPTION_TRACE
85 select ARCH_HAS_PTE_SPECIAL
87 menu "Machine selection"
94 bool "Generic board-agnostic MIPS kernel"
98 select CLKSRC_MIPS_GIC
100 select CPU_MIPSR2_IRQ_VI
101 select CPU_MIPSR2_IRQ_EI
103 select DMA_PERDEV_COHERENT
107 select MIPS_AUTO_PFN_OFFSET
108 select MIPS_CPU_SCACHE
110 select MIPS_L1_CACHE_SHIFT_7
111 select NO_EXCEPT_FILL
112 select PCI_DRIVERS_GENERIC
116 select SYS_HAS_CPU_MIPS32_R1
117 select SYS_HAS_CPU_MIPS32_R2
118 select SYS_HAS_CPU_MIPS32_R6
119 select SYS_HAS_CPU_MIPS64_R1
120 select SYS_HAS_CPU_MIPS64_R2
121 select SYS_HAS_CPU_MIPS64_R6
122 select SYS_SUPPORTS_32BIT_KERNEL
123 select SYS_SUPPORTS_64BIT_KERNEL
124 select SYS_SUPPORTS_BIG_ENDIAN
125 select SYS_SUPPORTS_HIGHMEM
126 select SYS_SUPPORTS_LITTLE_ENDIAN
127 select SYS_SUPPORTS_MICROMIPS
128 select SYS_SUPPORTS_MIPS_CPS
129 select SYS_SUPPORTS_MIPS16
130 select SYS_SUPPORTS_MULTITHREADING
131 select SYS_SUPPORTS_RELOCATABLE
132 select SYS_SUPPORTS_SMARTMIPS
133 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
134 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
135 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
136 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
137 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
138 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
142 Select this to build a kernel which aims to support multiple boards,
143 generally using a flattened device tree passed from the bootloader
144 using the boot protocol defined in the UHI (Unified Hosting
145 Interface) specification.
148 bool "Alchemy processor based machines"
149 select PHYS_ADDR_T_64BIT
153 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
154 select SYS_HAS_CPU_MIPS32_R1
155 select SYS_SUPPORTS_32BIT_KERNEL
156 select SYS_SUPPORTS_APM_EMULATION
158 select SYS_SUPPORTS_ZBOOT
162 bool "Texas Instruments AR7"
164 select DMA_NONCOHERENT
168 select NO_EXCEPT_FILL
170 select SYS_HAS_CPU_MIPS32_R1
171 select SYS_HAS_EARLY_PRINTK
172 select SYS_SUPPORTS_32BIT_KERNEL
173 select SYS_SUPPORTS_LITTLE_ENDIAN
174 select SYS_SUPPORTS_MIPS16
175 select SYS_SUPPORTS_ZBOOT_UART16550
180 Support for the Texas Instruments AR7 System-on-a-Chip
181 family: TNETD7100, 7200 and 7300.
184 bool "Atheros AR231x/AR531x SoC support"
187 select DMA_NONCOHERENT
190 select SYS_HAS_CPU_MIPS32_R1
191 select SYS_SUPPORTS_BIG_ENDIAN
192 select SYS_SUPPORTS_32BIT_KERNEL
193 select SYS_HAS_EARLY_PRINTK
195 Support for Atheros AR231x and Atheros AR531x based boards
198 bool "Atheros AR71XX/AR724X/AR913X based boards"
199 select ARCH_HAS_RESET_CONTROLLER
203 select DMA_NONCOHERENT
210 select SYS_HAS_CPU_MIPS32_R2
211 select SYS_HAS_EARLY_PRINTK
212 select SYS_SUPPORTS_32BIT_KERNEL
213 select SYS_SUPPORTS_BIG_ENDIAN
214 select SYS_SUPPORTS_MIPS16
215 select SYS_SUPPORTS_ZBOOT_UART_PROM
217 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
219 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
222 bool "Broadcom Generic BMIPS kernel"
223 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
224 select ARCH_HAS_PHYS_TO_DMA
226 select NO_EXCEPT_FILL
232 select BCM6345_L1_IRQ
233 select BCM7038_L1_IRQ
234 select BCM7120_L2_IRQ
235 select BRCMSTB_L2_IRQ
237 select DMA_NONCOHERENT
238 select SYS_SUPPORTS_32BIT_KERNEL
239 select SYS_SUPPORTS_LITTLE_ENDIAN
240 select SYS_SUPPORTS_BIG_ENDIAN
241 select SYS_SUPPORTS_HIGHMEM
242 select SYS_HAS_CPU_BMIPS32_3300
243 select SYS_HAS_CPU_BMIPS4350
244 select SYS_HAS_CPU_BMIPS4380
245 select SYS_HAS_CPU_BMIPS5000
247 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
248 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
249 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
250 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
251 select HARDIRQS_SW_RESEND
253 Build a generic DT-based kernel image that boots on select
254 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
255 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
256 must be set appropriately for your board.
259 bool "Broadcom BCM47XX based boards"
263 select DMA_NONCOHERENT
266 select SYS_HAS_CPU_MIPS32_R1
267 select NO_EXCEPT_FILL
268 select SYS_SUPPORTS_32BIT_KERNEL
269 select SYS_SUPPORTS_LITTLE_ENDIAN
270 select SYS_SUPPORTS_MIPS16
271 select SYS_SUPPORTS_ZBOOT
272 select SYS_HAS_EARLY_PRINTK
273 select USE_GENERIC_EARLY_PRINTK_8250
275 select LEDS_GPIO_REGISTER
278 select BCM47XX_SSB if !BCM47XX_BCMA
280 Support for BCM47XX based boards
283 bool "Broadcom BCM63XX based boards"
288 select DMA_NONCOHERENT
290 select SYS_SUPPORTS_32BIT_KERNEL
291 select SYS_SUPPORTS_BIG_ENDIAN
292 select SYS_HAS_EARLY_PRINTK
296 select MIPS_L1_CACHE_SHIFT_4
299 Support for BCM63XX based boards
306 select DMA_NONCOHERENT
312 select PCI_GT64XXX_PCI0
313 select SYS_HAS_CPU_NEVADA
314 select SYS_HAS_EARLY_PRINTK
315 select SYS_SUPPORTS_32BIT_KERNEL
316 select SYS_SUPPORTS_64BIT_KERNEL
317 select SYS_SUPPORTS_LITTLE_ENDIAN
318 select USE_GENERIC_EARLY_PRINTK_8250
320 config MACH_DECSTATION
324 select CEVT_R4K if CPU_R4X00
326 select CSRC_R4K if CPU_R4X00
327 select CPU_DADDI_WORKAROUNDS if 64BIT
328 select CPU_R4000_WORKAROUNDS if 64BIT
329 select CPU_R4400_WORKAROUNDS if 64BIT
330 select DMA_NONCOHERENT
333 select SYS_HAS_CPU_R3000
334 select SYS_HAS_CPU_R4X00
335 select SYS_SUPPORTS_32BIT_KERNEL
336 select SYS_SUPPORTS_64BIT_KERNEL
337 select SYS_SUPPORTS_LITTLE_ENDIAN
338 select SYS_SUPPORTS_128HZ
339 select SYS_SUPPORTS_256HZ
340 select SYS_SUPPORTS_1024HZ
341 select MIPS_L1_CACHE_SHIFT_4
343 This enables support for DEC's MIPS based workstations. For details
344 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
345 DECstation porting pages on <http://decstation.unix-ag.org/>.
347 If you have one of the following DECstation Models you definitely
348 want to choose R4xx0 for the CPU Type:
355 otherwise choose R3000.
358 bool "Jazz family of machines"
359 select ARCH_MIGHT_HAVE_PC_PARPORT
360 select ARCH_MIGHT_HAVE_PC_SERIO
363 select ARCH_MAY_HAVE_PC_FDC
366 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
367 select GENERIC_ISA_DMA
368 select HAVE_PCSPKR_PLATFORM
373 select SYS_HAS_CPU_R4X00
374 select SYS_SUPPORTS_32BIT_KERNEL
375 select SYS_SUPPORTS_64BIT_KERNEL
376 select SYS_SUPPORTS_100HZ
378 This a family of machines based on the MIPS R4030 chipset which was
379 used by several vendors to build RISC/os and Windows NT workstations.
380 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
381 Olivetti M700-10 workstations.
384 bool "Ingenic SoC based machines"
385 select SYS_SUPPORTS_32BIT_KERNEL
386 select SYS_SUPPORTS_LITTLE_ENDIAN
387 select SYS_SUPPORTS_ZBOOT_UART16550
388 select CPU_SUPPORTS_HUGEPAGES
389 select DMA_NONCOHERENT
394 select GENERIC_IRQ_CHIP
395 select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
400 bool "Lantiq based platforms"
401 select DMA_NONCOHERENT
405 select SYS_HAS_CPU_MIPS32_R1
406 select SYS_HAS_CPU_MIPS32_R2
407 select SYS_SUPPORTS_BIG_ENDIAN
408 select SYS_SUPPORTS_32BIT_KERNEL
409 select SYS_SUPPORTS_MIPS16
410 select SYS_SUPPORTS_MULTITHREADING
411 select SYS_SUPPORTS_VPE_LOADER
412 select SYS_HAS_EARLY_PRINTK
419 select PINCTRL_LANTIQ
420 select ARCH_HAS_RESET_CONTROLLER
421 select RESET_CONTROLLER
424 bool "LASAT Networks platforms"
428 select DMA_NONCOHERENT
429 select SYS_HAS_EARLY_PRINTK
432 select PCI_GT64XXX_PCI0
434 select R5000_CPU_SCACHE
435 select SYS_HAS_CPU_R5000
436 select SYS_SUPPORTS_32BIT_KERNEL
437 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
438 select SYS_SUPPORTS_LITTLE_ENDIAN
440 config MACH_LOONGSON32
441 bool "Loongson-1 family of machines"
442 select SYS_SUPPORTS_ZBOOT
444 This enables support for the Loongson-1 family of machines.
446 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
447 the Institute of Computing Technology (ICT), Chinese Academy of
450 config MACH_LOONGSON64
451 bool "Loongson-2/3 family of machines"
452 select SYS_SUPPORTS_ZBOOT
454 This enables the support of Loongson-2/3 family of machines.
456 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
457 family of multi-core CPUs. They are both 64-bit general-purpose
458 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
459 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
460 in the People's Republic of China. The chief architect is Professor
463 config MACH_PISTACHIO
464 bool "IMG Pistachio SoC based boards"
468 select CLKSRC_MIPS_GIC
471 select DMA_NONCOHERENT
476 select MIPS_CPU_SCACHE
480 select SYS_HAS_CPU_MIPS32_R2
481 select SYS_SUPPORTS_32BIT_KERNEL
482 select SYS_SUPPORTS_LITTLE_ENDIAN
483 select SYS_SUPPORTS_MIPS_CPS
484 select SYS_SUPPORTS_MULTITHREADING
485 select SYS_SUPPORTS_RELOCATABLE
486 select SYS_SUPPORTS_ZBOOT
487 select SYS_HAS_EARLY_PRINTK
488 select USE_GENERIC_EARLY_PRINTK_8250
491 This enables support for the IMG Pistachio SoC platform.
494 bool "MIPS Malta board"
495 select ARCH_MAY_HAVE_PC_FDC
496 select ARCH_MIGHT_HAVE_PC_PARPORT
497 select ARCH_MIGHT_HAVE_PC_SERIO
502 select CLKSRC_MIPS_GIC
505 select DMA_MAYBE_COHERENT
506 select GENERIC_ISA_DMA
507 select HAVE_PCSPKR_PLATFORM
514 select MIPS_CPU_SCACHE
516 select MIPS_L1_CACHE_SHIFT_6
518 select PCI_GT64XXX_PCI0
521 select SYS_HAS_CPU_MIPS32_R1
522 select SYS_HAS_CPU_MIPS32_R2
523 select SYS_HAS_CPU_MIPS32_R3_5
524 select SYS_HAS_CPU_MIPS32_R5
525 select SYS_HAS_CPU_MIPS32_R6
526 select SYS_HAS_CPU_MIPS64_R1
527 select SYS_HAS_CPU_MIPS64_R2
528 select SYS_HAS_CPU_MIPS64_R6
529 select SYS_HAS_CPU_NEVADA
530 select SYS_HAS_CPU_RM7000
531 select SYS_SUPPORTS_32BIT_KERNEL
532 select SYS_SUPPORTS_64BIT_KERNEL
533 select SYS_SUPPORTS_BIG_ENDIAN
534 select SYS_SUPPORTS_HIGHMEM
535 select SYS_SUPPORTS_LITTLE_ENDIAN
536 select SYS_SUPPORTS_MICROMIPS
537 select SYS_SUPPORTS_MIPS16
538 select SYS_SUPPORTS_MIPS_CMP
539 select SYS_SUPPORTS_MIPS_CPS
540 select SYS_SUPPORTS_MULTITHREADING
541 select SYS_SUPPORTS_RELOCATABLE
542 select SYS_SUPPORTS_SMARTMIPS
543 select SYS_SUPPORTS_VPE_LOADER
544 select SYS_SUPPORTS_ZBOOT
546 select ZONE_DMA32 if 64BIT
548 This enables support for the MIPS Technologies Malta evaluation
552 bool "Microchip PIC32 Family"
554 This enables support for the Microchip PIC32 family of platforms.
556 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
560 bool "NEC EMMA2RH Mark-eins board"
564 This enables support for the NEC Electronics Mark-eins boards.
567 bool "NEC VR4100 series based machines"
570 select SYS_HAS_CPU_VR41XX
571 select SYS_SUPPORTS_MIPS16
575 bool "NXP STB220 board"
578 Support for NXP Semiconductors STB220 Development Board.
585 Support for NXP Semiconductors STB225 Development Board.
588 bool "PMC-Sierra MSP chipsets"
591 select DMA_NONCOHERENT
593 select NO_EXCEPT_FILL
595 select SYS_HAS_CPU_MIPS32_R1
596 select SYS_HAS_CPU_MIPS32_R2
597 select SYS_SUPPORTS_32BIT_KERNEL
598 select SYS_SUPPORTS_BIG_ENDIAN
599 select SYS_SUPPORTS_MIPS16
602 select SERIAL_8250_CONSOLE
603 select USB_EHCI_BIG_ENDIAN_MMIO
604 select USB_EHCI_BIG_ENDIAN_DESC
606 This adds support for the PMC-Sierra family of Multi-Service
607 Processor System-On-A-Chips. These parts include a number
608 of integrated peripherals, interfaces and DSPs in addition to
609 a variety of MIPS cores.
612 bool "Ralink based machines"
616 select DMA_NONCOHERENT
619 select SYS_HAS_CPU_MIPS32_R1
620 select SYS_HAS_CPU_MIPS32_R2
621 select SYS_SUPPORTS_32BIT_KERNEL
622 select SYS_SUPPORTS_LITTLE_ENDIAN
623 select SYS_SUPPORTS_MIPS16
624 select SYS_HAS_EARLY_PRINTK
626 select ARCH_HAS_RESET_CONTROLLER
627 select RESET_CONTROLLER
630 bool "SGI IP22 (Indy/Indigo2)"
633 select ARCH_MIGHT_HAVE_PC_SERIO
637 select DEFAULT_SGI_PARTITION
638 select DMA_NONCOHERENT
642 select IP22_CPU_SCACHE
644 select GENERIC_ISA_DMA_SUPPORT_BROKEN
646 select SGI_HAS_INDYDOG
652 select SYS_HAS_CPU_R4X00
653 select SYS_HAS_CPU_R5000
655 # Disable EARLY_PRINTK for now since it leads to overwritten prom
656 # memory during early boot on some machines.
658 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
659 # for a more details discussion
661 # select SYS_HAS_EARLY_PRINTK
662 select SYS_SUPPORTS_32BIT_KERNEL
663 select SYS_SUPPORTS_64BIT_KERNEL
664 select SYS_SUPPORTS_BIG_ENDIAN
665 select MIPS_L1_CACHE_SHIFT_7
667 This are the SGI Indy, Challenge S and Indigo2, as well as certain
668 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
669 that runs on these, say Y here.
672 bool "SGI IP27 (Origin200/2000)"
673 select ARCH_HAS_PHYS_TO_DMA
677 select DEFAULT_SGI_PARTITION
678 select SYS_HAS_EARLY_PRINTK
681 select IRQ_DOMAIN_HIERARCHY
682 select NR_CPUS_DEFAULT_64
683 select PCI_DRIVERS_GENERIC
684 select PCI_XTALK_BRIDGE
685 select SYS_HAS_CPU_R10000
686 select SYS_SUPPORTS_64BIT_KERNEL
687 select SYS_SUPPORTS_BIG_ENDIAN
688 select SYS_SUPPORTS_NUMA
689 select SYS_SUPPORTS_SMP
690 select MIPS_L1_CACHE_SHIFT_7
692 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
693 workstations. To compile a Linux kernel that runs on these, say Y
697 bool "SGI IP28 (Indigo2 R10k)"
700 select ARCH_MIGHT_HAVE_PC_SERIO
704 select DEFAULT_SGI_PARTITION
705 select DMA_NONCOHERENT
706 select GENERIC_ISA_DMA_SUPPORT_BROKEN
712 select SGI_HAS_INDYDOG
718 select SYS_HAS_CPU_R10000
720 # Disable EARLY_PRINTK for now since it leads to overwritten prom
721 # memory during early boot on some machines.
723 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
724 # for a more details discussion
726 # select SYS_HAS_EARLY_PRINTK
727 select SYS_SUPPORTS_64BIT_KERNEL
728 select SYS_SUPPORTS_BIG_ENDIAN
729 select MIPS_L1_CACHE_SHIFT_7
731 This is the SGI Indigo2 with R10000 processor. To compile a Linux
732 kernel that runs on these, say Y here.
736 select ARCH_HAS_PHYS_TO_DMA
742 select DMA_NONCOHERENT
745 select R5000_CPU_SCACHE
746 select RM7000_CPU_SCACHE
747 select SYS_HAS_CPU_R5000
748 select SYS_HAS_CPU_R10000 if BROKEN
749 select SYS_HAS_CPU_RM7000
750 select SYS_HAS_CPU_NEVADA
751 select SYS_SUPPORTS_64BIT_KERNEL
752 select SYS_SUPPORTS_BIG_ENDIAN
754 If you want this kernel to run on SGI O2 workstation, say Y here.
757 bool "Sibyte BCM91120C-CRhine"
759 select SIBYTE_BCM1120
761 select SYS_HAS_CPU_SB1
762 select SYS_SUPPORTS_BIG_ENDIAN
763 select SYS_SUPPORTS_LITTLE_ENDIAN
766 bool "Sibyte BCM91120x-Carmel"
768 select SIBYTE_BCM1120
770 select SYS_HAS_CPU_SB1
771 select SYS_SUPPORTS_BIG_ENDIAN
772 select SYS_SUPPORTS_LITTLE_ENDIAN
775 bool "Sibyte BCM91125C-CRhone"
777 select SIBYTE_BCM1125
779 select SYS_HAS_CPU_SB1
780 select SYS_SUPPORTS_BIG_ENDIAN
781 select SYS_SUPPORTS_HIGHMEM
782 select SYS_SUPPORTS_LITTLE_ENDIAN
785 bool "Sibyte BCM91125E-Rhone"
787 select SIBYTE_BCM1125H
789 select SYS_HAS_CPU_SB1
790 select SYS_SUPPORTS_BIG_ENDIAN
791 select SYS_SUPPORTS_LITTLE_ENDIAN
794 bool "Sibyte BCM91250A-SWARM"
796 select HAVE_PATA_PLATFORM
799 select SYS_HAS_CPU_SB1
800 select SYS_SUPPORTS_BIG_ENDIAN
801 select SYS_SUPPORTS_HIGHMEM
802 select SYS_SUPPORTS_LITTLE_ENDIAN
803 select ZONE_DMA32 if 64BIT
804 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
806 config SIBYTE_LITTLESUR
807 bool "Sibyte BCM91250C2-LittleSur"
809 select HAVE_PATA_PLATFORM
812 select SYS_HAS_CPU_SB1
813 select SYS_SUPPORTS_BIG_ENDIAN
814 select SYS_SUPPORTS_HIGHMEM
815 select SYS_SUPPORTS_LITTLE_ENDIAN
816 select ZONE_DMA32 if 64BIT
818 config SIBYTE_SENTOSA
819 bool "Sibyte BCM91250E-Sentosa"
823 select SYS_HAS_CPU_SB1
824 select SYS_SUPPORTS_BIG_ENDIAN
825 select SYS_SUPPORTS_LITTLE_ENDIAN
826 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
829 bool "Sibyte BCM91480B-BigSur"
831 select NR_CPUS_DEFAULT_4
832 select SIBYTE_BCM1x80
834 select SYS_HAS_CPU_SB1
835 select SYS_SUPPORTS_BIG_ENDIAN
836 select SYS_SUPPORTS_HIGHMEM
837 select SYS_SUPPORTS_LITTLE_ENDIAN
838 select ZONE_DMA32 if 64BIT
839 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
842 bool "SNI RM200/300/400"
843 select FW_ARC if CPU_LITTLE_ENDIAN
844 select FW_ARC32 if CPU_LITTLE_ENDIAN
845 select FW_SNIPROM if CPU_BIG_ENDIAN
846 select ARCH_MAY_HAVE_PC_FDC
847 select ARCH_MIGHT_HAVE_PC_PARPORT
848 select ARCH_MIGHT_HAVE_PC_SERIO
852 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
853 select DMA_NONCOHERENT
854 select GENERIC_ISA_DMA
856 select HAVE_PCSPKR_PLATFORM
862 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
863 select SYS_HAS_CPU_R4X00
864 select SYS_HAS_CPU_R5000
865 select SYS_HAS_CPU_R10000
866 select R5000_CPU_SCACHE
867 select SYS_HAS_EARLY_PRINTK
868 select SYS_SUPPORTS_32BIT_KERNEL
869 select SYS_SUPPORTS_64BIT_KERNEL
870 select SYS_SUPPORTS_BIG_ENDIAN
871 select SYS_SUPPORTS_HIGHMEM
872 select SYS_SUPPORTS_LITTLE_ENDIAN
874 The SNI RM200/300/400 are MIPS-based machines manufactured by
875 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
876 Technology and now in turn merged with Fujitsu. Say Y here to
877 support this machine type.
880 bool "Toshiba TX39 series based machines"
883 bool "Toshiba TX49 series based machines"
885 config MIKROTIK_RB532
886 bool "Mikrotik RB532 boards"
889 select DMA_NONCOHERENT
892 select SYS_HAS_CPU_MIPS32_R1
893 select SYS_SUPPORTS_32BIT_KERNEL
894 select SYS_SUPPORTS_LITTLE_ENDIAN
898 select MIPS_L1_CACHE_SHIFT_4
900 Support the Mikrotik(tm) RouterBoard 532 series,
901 based on the IDT RC32434 SoC.
903 config CAVIUM_OCTEON_SOC
904 bool "Cavium Networks Octeon SoC based boards"
906 select ARCH_HAS_PHYS_TO_DMA
908 select PHYS_ADDR_T_64BIT
909 select SYS_SUPPORTS_64BIT_KERNEL
910 select SYS_SUPPORTS_BIG_ENDIAN
912 select EDAC_ATOMIC_SCRUB
913 select SYS_SUPPORTS_LITTLE_ENDIAN
914 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
915 select SYS_HAS_EARLY_PRINTK
916 select SYS_HAS_CPU_CAVIUM_OCTEON
923 select ARCH_SPARSEMEM_ENABLE
924 select SYS_SUPPORTS_SMP
925 select NR_CPUS_DEFAULT_64
926 select MIPS_NR_CPU_NR_MAP_1024
928 select MTD_COMPLEX_MAPPINGS
930 select SYS_SUPPORTS_RELOCATABLE
932 This option supports all of the Octeon reference boards from Cavium
933 Networks. It builds a kernel that dynamically determines the Octeon
934 CPU type and supports all known board reference implementations.
935 Some of the supported boards are:
942 Say Y here for most Octeon reference boards.
945 bool "Netlogic XLR/XLS based systems"
948 select SYS_HAS_CPU_XLR
949 select SYS_SUPPORTS_SMP
952 select SYS_SUPPORTS_32BIT_KERNEL
953 select SYS_SUPPORTS_64BIT_KERNEL
954 select PHYS_ADDR_T_64BIT
955 select SYS_SUPPORTS_BIG_ENDIAN
956 select SYS_SUPPORTS_HIGHMEM
957 select NR_CPUS_DEFAULT_32
961 select ZONE_DMA32 if 64BIT
963 select SYS_HAS_EARLY_PRINTK
964 select SYS_SUPPORTS_ZBOOT
965 select SYS_SUPPORTS_ZBOOT_UART16550
967 Support for systems based on Netlogic XLR and XLS processors.
968 Say Y here if you have a XLR or XLS based board.
971 bool "Netlogic XLP based systems"
974 select SYS_HAS_CPU_XLP
975 select SYS_SUPPORTS_SMP
977 select SYS_SUPPORTS_32BIT_KERNEL
978 select SYS_SUPPORTS_64BIT_KERNEL
979 select PHYS_ADDR_T_64BIT
981 select SYS_SUPPORTS_BIG_ENDIAN
982 select SYS_SUPPORTS_LITTLE_ENDIAN
983 select SYS_SUPPORTS_HIGHMEM
984 select NR_CPUS_DEFAULT_32
988 select ZONE_DMA32 if 64BIT
990 select SYS_HAS_EARLY_PRINTK
992 select SYS_SUPPORTS_ZBOOT
993 select SYS_SUPPORTS_ZBOOT_UART16550
995 This board is based on Netlogic XLP Processor.
996 Say Y here if you have a XLP based board.
999 bool "Para-Virtualized guest system"
1002 select SYS_SUPPORTS_64BIT_KERNEL
1003 select SYS_SUPPORTS_32BIT_KERNEL
1004 select SYS_SUPPORTS_BIG_ENDIAN
1005 select SYS_SUPPORTS_SMP
1006 select NR_CPUS_DEFAULT_4
1007 select SYS_HAS_EARLY_PRINTK
1008 select SYS_HAS_CPU_MIPS32_R2
1009 select SYS_HAS_CPU_MIPS64_R2
1010 select SYS_HAS_CPU_CAVIUM_OCTEON
1012 select SWAP_IO_SPACE
1014 This option supports guest running under ????
1018 source "arch/mips/alchemy/Kconfig"
1019 source "arch/mips/ath25/Kconfig"
1020 source "arch/mips/ath79/Kconfig"
1021 source "arch/mips/bcm47xx/Kconfig"
1022 source "arch/mips/bcm63xx/Kconfig"
1023 source "arch/mips/bmips/Kconfig"
1024 source "arch/mips/generic/Kconfig"
1025 source "arch/mips/jazz/Kconfig"
1026 source "arch/mips/jz4740/Kconfig"
1027 source "arch/mips/lantiq/Kconfig"
1028 source "arch/mips/lasat/Kconfig"
1029 source "arch/mips/pic32/Kconfig"
1030 source "arch/mips/pistachio/Kconfig"
1031 source "arch/mips/pmcs-msp71xx/Kconfig"
1032 source "arch/mips/ralink/Kconfig"
1033 source "arch/mips/sgi-ip27/Kconfig"
1034 source "arch/mips/sibyte/Kconfig"
1035 source "arch/mips/txx9/Kconfig"
1036 source "arch/mips/vr41xx/Kconfig"
1037 source "arch/mips/cavium-octeon/Kconfig"
1038 source "arch/mips/loongson32/Kconfig"
1039 source "arch/mips/loongson64/Kconfig"
1040 source "arch/mips/netlogic/Kconfig"
1041 source "arch/mips/paravirt/Kconfig"
1045 config GENERIC_HWEIGHT
1049 config GENERIC_CALIBRATE_DELAY
1053 config SCHED_OMIT_FRAME_POINTER
1058 # Select some configuration options automatically based on user selections.
1063 config ARCH_MAY_HAVE_PC_FDC
1099 config MIPS_CLOCK_VSYSCALL
1100 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1109 config ARCH_SUPPORTS_UPROBES
1112 config DMA_MAYBE_COHERENT
1113 select ARCH_HAS_DMA_COHERENCE_H
1114 select DMA_NONCOHERENT
1117 config DMA_PERDEV_COHERENT
1119 select ARCH_HAS_SETUP_DMA_OPS
1120 select DMA_NONCOHERENT
1122 config DMA_NONCOHERENT
1124 select ARCH_HAS_DMA_MMAP_PGPROT
1125 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1126 select ARCH_HAS_UNCACHED_SEGMENT
1127 select NEED_DMA_MAP_STATE
1128 select ARCH_HAS_DMA_COHERENT_TO_PFN
1129 select DMA_NONCOHERENT_CACHE_SYNC
1131 config SYS_HAS_EARLY_PRINTK
1134 config SYS_SUPPORTS_HOTPLUG_CPU
1137 config MIPS_BONITO64
1152 config NO_IOPORT_MAP
1157 default y if !CPU_HAS_LOAD_STORE_LR
1159 config GENERIC_ISA_DMA
1161 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1164 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1166 select GENERIC_ISA_DMA
1171 config HOLES_IN_ZONE
1174 config SYS_SUPPORTS_RELOCATABLE
1177 Selected if the platform supports relocating the kernel.
1178 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1179 to allow access to command line and entropy sources.
1181 config MIPS_CBPF_JIT
1183 depends on BPF_JIT && HAVE_CBPF_JIT
1185 config MIPS_EBPF_JIT
1187 depends on BPF_JIT && HAVE_EBPF_JIT
1191 # Endianness selection. Sufficiently obscure so many users don't know what to
1192 # answer,so we try hard to limit the available choices. Also the use of a
1193 # choice statement should be more obvious to the user.
1196 prompt "Endianness selection"
1198 Some MIPS machines can be configured for either little or big endian
1199 byte order. These modes require different kernels and a different
1200 Linux distribution. In general there is one preferred byteorder for a
1201 particular system but some systems are just as commonly used in the
1202 one or the other endianness.
1204 config CPU_BIG_ENDIAN
1206 depends on SYS_SUPPORTS_BIG_ENDIAN
1208 config CPU_LITTLE_ENDIAN
1209 bool "Little endian"
1210 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1217 config SYS_SUPPORTS_APM_EMULATION
1220 config SYS_SUPPORTS_BIG_ENDIAN
1223 config SYS_SUPPORTS_LITTLE_ENDIAN
1226 config SYS_SUPPORTS_HUGETLBFS
1228 depends on CPU_SUPPORTS_HUGEPAGES
1231 config MIPS_HUGE_TLB_SUPPORT
1232 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1249 config PCI_GT64XXX_PCI0
1252 config PCI_XTALK_BRIDGE
1255 config NO_EXCEPT_FILL
1262 select DMA_NONCOHERENT
1264 select SWAP_IO_SPACE
1265 select SYS_HAS_CPU_R5500
1266 select SYS_SUPPORTS_32BIT_KERNEL
1267 select SYS_SUPPORTS_64BIT_KERNEL
1268 select SYS_SUPPORTS_BIG_ENDIAN
1275 select DMA_NONCOHERENT
1276 select SYS_HAS_CPU_MIPS32_R2
1277 select SYS_SUPPORTS_32BIT_KERNEL
1278 select SYS_SUPPORTS_LITTLE_ENDIAN
1279 select SYS_SUPPORTS_BIG_ENDIAN
1280 select SYS_SUPPORTS_MIPS16
1281 select CPU_MIPSR2_IRQ_VI
1290 config SWAP_IO_SPACE
1293 config SGI_HAS_INDYDOG
1305 config SGI_HAS_ZILOG
1308 config SGI_HAS_I8042
1311 config DEFAULT_SGI_PARTITION
1323 config MIPS_L1_CACHE_SHIFT_4
1326 config MIPS_L1_CACHE_SHIFT_5
1329 config MIPS_L1_CACHE_SHIFT_6
1332 config MIPS_L1_CACHE_SHIFT_7
1335 config MIPS_L1_CACHE_SHIFT
1337 default "7" if MIPS_L1_CACHE_SHIFT_7
1338 default "6" if MIPS_L1_CACHE_SHIFT_6
1339 default "5" if MIPS_L1_CACHE_SHIFT_5
1340 default "4" if MIPS_L1_CACHE_SHIFT_4
1343 config HAVE_STD_PC_SERIAL_PORT
1347 bool "ARC console support"
1348 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1352 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1357 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1366 menu "CPU selection"
1372 config CPU_LOONGSON3
1373 bool "Loongson 3 CPU"
1374 depends on SYS_HAS_CPU_LOONGSON3
1375 select ARCH_HAS_PHYS_TO_DMA
1376 select CPU_SUPPORTS_64BIT_KERNEL
1377 select CPU_SUPPORTS_HIGHMEM
1378 select CPU_SUPPORTS_HUGEPAGES
1379 select CPU_HAS_LOAD_STORE_LR
1380 select WEAK_ORDERING
1381 select WEAK_REORDERING_BEYOND_LLSC
1382 select MIPS_PGD_C0_CONTEXT
1383 select MIPS_L1_CACHE_SHIFT_6
1387 The Loongson 3 processor implements the MIPS64R2 instruction
1388 set with many extensions.
1390 config LOONGSON3_ENHANCEMENT
1391 bool "New Loongson 3 CPU Enhancements"
1394 select CPU_HAS_PREFETCH
1395 depends on CPU_LOONGSON3
1397 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1398 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1399 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1400 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1401 Fast TLB refill support, etc.
1403 This option enable those enhancements which are not probed at run
1404 time. If you want a generic kernel to run on all Loongson 3 machines,
1405 please say 'N' here. If you want a high-performance kernel to run on
1406 new Loongson 3 machines only, please say 'Y' here.
1408 config CPU_LOONGSON3_WORKAROUNDS
1409 bool "Old Loongson 3 LLSC Workarounds"
1411 depends on CPU_LOONGSON3
1413 Loongson 3 processors have the llsc issues which require workarounds.
1414 Without workarounds the system may hang unexpectedly.
1416 Newer Loongson 3 will fix these issues and no workarounds are needed.
1417 The workarounds have no significant side effect on them but may
1418 decrease the performance of the system so this option should be
1419 disabled unless the kernel is intended to be run on old systems.
1421 If unsure, please say Y.
1423 config CPU_LOONGSON2E
1425 depends on SYS_HAS_CPU_LOONGSON2E
1426 select CPU_LOONGSON2
1428 The Loongson 2E processor implements the MIPS III instruction set
1429 with many extensions.
1431 It has an internal FPGA northbridge, which is compatible to
1434 config CPU_LOONGSON2F
1436 depends on SYS_HAS_CPU_LOONGSON2F
1437 select CPU_LOONGSON2
1440 The Loongson 2F processor implements the MIPS III instruction set
1441 with many extensions.
1443 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1444 have a similar programming interface with FPGA northbridge used in
1447 config CPU_LOONGSON1B
1449 depends on SYS_HAS_CPU_LOONGSON1B
1450 select CPU_LOONGSON1
1451 select LEDS_GPIO_REGISTER
1453 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1454 Release 1 instruction set and part of the MIPS32 Release 2
1457 config CPU_LOONGSON1C
1459 depends on SYS_HAS_CPU_LOONGSON1C
1460 select CPU_LOONGSON1
1461 select LEDS_GPIO_REGISTER
1463 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1464 Release 1 instruction set and part of the MIPS32 Release 2
1467 config CPU_MIPS32_R1
1468 bool "MIPS32 Release 1"
1469 depends on SYS_HAS_CPU_MIPS32_R1
1470 select CPU_HAS_PREFETCH
1471 select CPU_HAS_LOAD_STORE_LR
1472 select CPU_SUPPORTS_32BIT_KERNEL
1473 select CPU_SUPPORTS_HIGHMEM
1475 Choose this option to build a kernel for release 1 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.
1480 Release 2 of the MIPS32 architecture is available since several
1481 years so chances are you even have a MIPS32 Release 2 processor
1482 in which case you should choose CPU_MIPS32_R2 instead for better
1485 config CPU_MIPS32_R2
1486 bool "MIPS32 Release 2"
1487 depends on SYS_HAS_CPU_MIPS32_R2
1488 select CPU_HAS_PREFETCH
1489 select CPU_HAS_LOAD_STORE_LR
1490 select CPU_SUPPORTS_32BIT_KERNEL
1491 select CPU_SUPPORTS_HIGHMEM
1492 select CPU_SUPPORTS_MSA
1495 Choose this option to build a kernel for release 2 or later of the
1496 MIPS32 architecture. Most modern embedded systems with a 32-bit
1497 MIPS processor are based on a MIPS32 processor. If you know the
1498 specific type of processor in your system, choose those that one
1499 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1501 config CPU_MIPS32_R6
1502 bool "MIPS32 Release 6"
1503 depends on SYS_HAS_CPU_MIPS32_R6
1504 select CPU_HAS_PREFETCH
1505 select CPU_SUPPORTS_32BIT_KERNEL
1506 select CPU_SUPPORTS_HIGHMEM
1507 select CPU_SUPPORTS_MSA
1509 select MIPS_O32_FP64_SUPPORT
1511 Choose this option to build a kernel for release 6 or later of the
1512 MIPS32 architecture. New MIPS processors, starting with the Warrior
1513 family, are based on a MIPS32r6 processor. If you own an older
1514 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1516 config CPU_MIPS64_R1
1517 bool "MIPS64 Release 1"
1518 depends on SYS_HAS_CPU_MIPS64_R1
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
1526 Choose this option to build a kernel for release 1 or later of the
1527 MIPS64 architecture. Many modern embedded systems with a 64-bit
1528 MIPS processor are based on a MIPS64 processor. If you know the
1529 specific type of processor in your system, choose those that one
1530 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1531 Release 2 of the MIPS64 architecture is available since several
1532 years so chances are you even have a MIPS64 Release 2 processor
1533 in which case you should choose CPU_MIPS64_R2 instead for better
1536 config CPU_MIPS64_R2
1537 bool "MIPS64 Release 2"
1538 depends on SYS_HAS_CPU_MIPS64_R2
1539 select CPU_HAS_PREFETCH
1540 select CPU_HAS_LOAD_STORE_LR
1541 select CPU_SUPPORTS_32BIT_KERNEL
1542 select CPU_SUPPORTS_64BIT_KERNEL
1543 select CPU_SUPPORTS_HIGHMEM
1544 select CPU_SUPPORTS_HUGEPAGES
1545 select CPU_SUPPORTS_MSA
1548 Choose this option to build a kernel for release 2 or later of the
1549 MIPS64 architecture. Many modern embedded systems with a 64-bit
1550 MIPS processor are based on a MIPS64 processor. If you know the
1551 specific type of processor in your system, choose those that one
1552 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1554 config CPU_MIPS64_R6
1555 bool "MIPS64 Release 6"
1556 depends on SYS_HAS_CPU_MIPS64_R6
1557 select CPU_HAS_PREFETCH
1558 select CPU_SUPPORTS_32BIT_KERNEL
1559 select CPU_SUPPORTS_64BIT_KERNEL
1560 select CPU_SUPPORTS_HIGHMEM
1561 select CPU_SUPPORTS_HUGEPAGES
1562 select CPU_SUPPORTS_MSA
1563 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1566 Choose this option to build a kernel for release 6 or later of the
1567 MIPS64 architecture. New MIPS processors, starting with the Warrior
1568 family, are based on a MIPS64r6 processor. If you own an older
1569 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1573 depends on SYS_HAS_CPU_R3000
1575 select CPU_HAS_LOAD_STORE_LR
1576 select CPU_SUPPORTS_32BIT_KERNEL
1577 select CPU_SUPPORTS_HIGHMEM
1579 Please make sure to pick the right CPU type. Linux/MIPS is not
1580 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1581 *not* work on R4000 machines and vice versa. However, since most
1582 of the supported machines have an R4000 (or similar) CPU, R4x00
1583 might be a safe bet. If the resulting kernel does not work,
1584 try to recompile with R3000.
1588 depends on SYS_HAS_CPU_TX39XX
1589 select CPU_SUPPORTS_32BIT_KERNEL
1590 select CPU_HAS_LOAD_STORE_LR
1594 depends on SYS_HAS_CPU_VR41XX
1595 select CPU_SUPPORTS_32BIT_KERNEL
1596 select CPU_SUPPORTS_64BIT_KERNEL
1597 select CPU_HAS_LOAD_STORE_LR
1599 The options selects support for the NEC VR4100 series of processors.
1600 Only choose this option if you have one of these processors as a
1601 kernel built with this option will not run on any other type of
1602 processor or vice versa.
1606 depends on SYS_HAS_CPU_R4X00
1607 select CPU_SUPPORTS_32BIT_KERNEL
1608 select CPU_SUPPORTS_64BIT_KERNEL
1609 select CPU_SUPPORTS_HUGEPAGES
1610 select CPU_HAS_LOAD_STORE_LR
1612 MIPS Technologies R4000-series processors other than 4300, including
1613 the R4000, R4400, R4600, and 4700.
1617 depends on SYS_HAS_CPU_TX49XX
1618 select CPU_HAS_PREFETCH
1619 select CPU_HAS_LOAD_STORE_LR
1620 select CPU_SUPPORTS_32BIT_KERNEL
1621 select CPU_SUPPORTS_64BIT_KERNEL
1622 select CPU_SUPPORTS_HUGEPAGES
1626 depends on SYS_HAS_CPU_R5000
1627 select CPU_SUPPORTS_32BIT_KERNEL
1628 select CPU_SUPPORTS_64BIT_KERNEL
1629 select CPU_SUPPORTS_HUGEPAGES
1630 select CPU_HAS_LOAD_STORE_LR
1632 MIPS Technologies R5000-series processors other than the Nevada.
1636 depends on SYS_HAS_CPU_R5500
1637 select CPU_SUPPORTS_32BIT_KERNEL
1638 select CPU_SUPPORTS_64BIT_KERNEL
1639 select CPU_SUPPORTS_HUGEPAGES
1640 select CPU_HAS_LOAD_STORE_LR
1642 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1647 depends on SYS_HAS_CPU_NEVADA
1648 select CPU_SUPPORTS_32BIT_KERNEL
1649 select CPU_SUPPORTS_64BIT_KERNEL
1650 select CPU_SUPPORTS_HUGEPAGES
1651 select CPU_HAS_LOAD_STORE_LR
1653 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1657 depends on SYS_HAS_CPU_R8000
1658 select CPU_HAS_PREFETCH
1659 select CPU_HAS_LOAD_STORE_LR
1660 select CPU_SUPPORTS_64BIT_KERNEL
1662 MIPS Technologies R8000 processors. Note these processors are
1663 uncommon and the support for them is incomplete.
1667 depends on SYS_HAS_CPU_R10000
1668 select CPU_HAS_PREFETCH
1669 select CPU_HAS_LOAD_STORE_LR
1670 select CPU_SUPPORTS_32BIT_KERNEL
1671 select CPU_SUPPORTS_64BIT_KERNEL
1672 select CPU_SUPPORTS_HIGHMEM
1673 select CPU_SUPPORTS_HUGEPAGES
1675 MIPS Technologies R10000-series processors.
1679 depends on SYS_HAS_CPU_RM7000
1680 select CPU_HAS_PREFETCH
1681 select CPU_HAS_LOAD_STORE_LR
1682 select CPU_SUPPORTS_32BIT_KERNEL
1683 select CPU_SUPPORTS_64BIT_KERNEL
1684 select CPU_SUPPORTS_HIGHMEM
1685 select CPU_SUPPORTS_HUGEPAGES
1689 depends on SYS_HAS_CPU_SB1
1690 select CPU_HAS_LOAD_STORE_LR
1691 select CPU_SUPPORTS_32BIT_KERNEL
1692 select CPU_SUPPORTS_64BIT_KERNEL
1693 select CPU_SUPPORTS_HIGHMEM
1694 select CPU_SUPPORTS_HUGEPAGES
1695 select WEAK_ORDERING
1697 config CPU_CAVIUM_OCTEON
1698 bool "Cavium Octeon processor"
1699 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1700 select CPU_HAS_PREFETCH
1701 select CPU_HAS_LOAD_STORE_LR
1702 select CPU_SUPPORTS_64BIT_KERNEL
1703 select WEAK_ORDERING
1704 select CPU_SUPPORTS_HIGHMEM
1705 select CPU_SUPPORTS_HUGEPAGES
1706 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1707 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1708 select MIPS_L1_CACHE_SHIFT_7
1711 The Cavium Octeon processor is a highly integrated chip containing
1712 many ethernet hardware widgets for networking tasks. The processor
1713 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1714 Full details can be found at http://www.caviumnetworks.com.
1717 bool "Broadcom BMIPS"
1718 depends on SYS_HAS_CPU_BMIPS
1720 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1721 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1722 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1723 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1724 select CPU_SUPPORTS_32BIT_KERNEL
1725 select DMA_NONCOHERENT
1727 select SWAP_IO_SPACE
1728 select WEAK_ORDERING
1729 select CPU_SUPPORTS_HIGHMEM
1730 select CPU_HAS_PREFETCH
1731 select CPU_HAS_LOAD_STORE_LR
1732 select CPU_SUPPORTS_CPUFREQ
1733 select MIPS_EXTERNAL_TIMER
1735 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1738 bool "Netlogic XLR SoC"
1739 depends on SYS_HAS_CPU_XLR
1740 select CPU_HAS_LOAD_STORE_LR
1741 select CPU_SUPPORTS_32BIT_KERNEL
1742 select CPU_SUPPORTS_64BIT_KERNEL
1743 select CPU_SUPPORTS_HIGHMEM
1744 select CPU_SUPPORTS_HUGEPAGES
1745 select WEAK_ORDERING
1746 select WEAK_REORDERING_BEYOND_LLSC
1748 Netlogic Microsystems XLR/XLS processors.
1751 bool "Netlogic XLP SoC"
1752 depends on SYS_HAS_CPU_XLP
1753 select CPU_SUPPORTS_32BIT_KERNEL
1754 select CPU_SUPPORTS_64BIT_KERNEL
1755 select CPU_SUPPORTS_HIGHMEM
1756 select WEAK_ORDERING
1757 select WEAK_REORDERING_BEYOND_LLSC
1758 select CPU_HAS_PREFETCH
1759 select CPU_HAS_LOAD_STORE_LR
1761 select CPU_SUPPORTS_HUGEPAGES
1762 select MIPS_ASID_BITS_VARIABLE
1764 Netlogic Microsystems XLP processors.
1767 config CPU_MIPS32_3_5_FEATURES
1768 bool "MIPS32 Release 3.5 Features"
1769 depends on SYS_HAS_CPU_MIPS32_R3_5
1770 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1772 Choose this option to build a kernel for release 2 or later of the
1773 MIPS32 architecture including features from the 3.5 release such as
1774 support for Enhanced Virtual Addressing (EVA).
1776 config CPU_MIPS32_3_5_EVA
1777 bool "Enhanced Virtual Addressing (EVA)"
1778 depends on CPU_MIPS32_3_5_FEATURES
1782 Choose this option if you want to enable the Enhanced Virtual
1783 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1784 One of its primary benefits is an increase in the maximum size
1785 of lowmem (up to 3GB). If unsure, say 'N' here.
1787 config CPU_MIPS32_R5_FEATURES
1788 bool "MIPS32 Release 5 Features"
1789 depends on SYS_HAS_CPU_MIPS32_R5
1790 depends on CPU_MIPS32_R2
1792 Choose this option to build a kernel for release 2 or later of the
1793 MIPS32 architecture including features from release 5 such as
1794 support for Extended Physical Addressing (XPA).
1796 config CPU_MIPS32_R5_XPA
1797 bool "Extended Physical Addressing (XPA)"
1798 depends on CPU_MIPS32_R5_FEATURES
1800 depends on !PAGE_SIZE_4KB
1801 depends on SYS_SUPPORTS_HIGHMEM
1804 select PHYS_ADDR_T_64BIT
1807 Choose this option if you want to enable the Extended Physical
1808 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1809 benefit is to increase physical addressing equal to or greater
1810 than 40 bits. Note that this has the side effect of turning on
1811 64-bit addressing which in turn makes the PTEs 64-bit in size.
1812 If unsure, say 'N' here.
1815 config CPU_NOP_WORKAROUNDS
1818 config CPU_JUMP_WORKAROUNDS
1821 config CPU_LOONGSON2F_WORKAROUNDS
1822 bool "Loongson 2F Workarounds"
1824 select CPU_NOP_WORKAROUNDS
1825 select CPU_JUMP_WORKAROUNDS
1827 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1828 require workarounds. Without workarounds the system may hang
1829 unexpectedly. For more information please refer to the gas
1830 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1832 Loongson 2F03 and later have fixed these issues and no workarounds
1833 are needed. The workarounds have no significant side effect on them
1834 but may decrease the performance of the system so this option should
1835 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1838 If unsure, please say Y.
1839 endif # CPU_LOONGSON2F
1841 config SYS_SUPPORTS_ZBOOT
1843 select HAVE_KERNEL_GZIP
1844 select HAVE_KERNEL_BZIP2
1845 select HAVE_KERNEL_LZ4
1846 select HAVE_KERNEL_LZMA
1847 select HAVE_KERNEL_LZO
1848 select HAVE_KERNEL_XZ
1850 config SYS_SUPPORTS_ZBOOT_UART16550
1852 select SYS_SUPPORTS_ZBOOT
1854 config SYS_SUPPORTS_ZBOOT_UART_PROM
1856 select SYS_SUPPORTS_ZBOOT
1858 config CPU_LOONGSON2
1860 select CPU_SUPPORTS_32BIT_KERNEL
1861 select CPU_SUPPORTS_64BIT_KERNEL
1862 select CPU_SUPPORTS_HIGHMEM
1863 select CPU_SUPPORTS_HUGEPAGES
1864 select ARCH_HAS_PHYS_TO_DMA
1865 select CPU_HAS_LOAD_STORE_LR
1867 config CPU_LOONGSON1
1871 select CPU_HAS_PREFETCH
1872 select CPU_HAS_LOAD_STORE_LR
1873 select CPU_SUPPORTS_32BIT_KERNEL
1874 select CPU_SUPPORTS_HIGHMEM
1875 select CPU_SUPPORTS_CPUFREQ
1877 config CPU_BMIPS32_3300
1878 select SMP_UP if SMP
1881 config CPU_BMIPS4350
1883 select SYS_SUPPORTS_SMP
1884 select SYS_SUPPORTS_HOTPLUG_CPU
1886 config CPU_BMIPS4380
1888 select MIPS_L1_CACHE_SHIFT_6
1889 select SYS_SUPPORTS_SMP
1890 select SYS_SUPPORTS_HOTPLUG_CPU
1893 config CPU_BMIPS5000
1895 select MIPS_CPU_SCACHE
1896 select MIPS_L1_CACHE_SHIFT_7
1897 select SYS_SUPPORTS_SMP
1898 select SYS_SUPPORTS_HOTPLUG_CPU
1901 config SYS_HAS_CPU_LOONGSON3
1903 select CPU_SUPPORTS_CPUFREQ
1906 config SYS_HAS_CPU_LOONGSON2E
1909 config SYS_HAS_CPU_LOONGSON2F
1911 select CPU_SUPPORTS_CPUFREQ
1912 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1913 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1915 config SYS_HAS_CPU_LOONGSON1B
1918 config SYS_HAS_CPU_LOONGSON1C
1921 config SYS_HAS_CPU_MIPS32_R1
1924 config SYS_HAS_CPU_MIPS32_R2
1927 config SYS_HAS_CPU_MIPS32_R3_5
1930 config SYS_HAS_CPU_MIPS32_R5
1932 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1934 config SYS_HAS_CPU_MIPS32_R6
1936 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1938 config SYS_HAS_CPU_MIPS64_R1
1941 config SYS_HAS_CPU_MIPS64_R2
1944 config SYS_HAS_CPU_MIPS64_R6
1946 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1948 config SYS_HAS_CPU_R3000
1951 config SYS_HAS_CPU_TX39XX
1954 config SYS_HAS_CPU_VR41XX
1957 config SYS_HAS_CPU_R4X00
1960 config SYS_HAS_CPU_TX49XX
1963 config SYS_HAS_CPU_R5000
1966 config SYS_HAS_CPU_R5500
1969 config SYS_HAS_CPU_NEVADA
1972 config SYS_HAS_CPU_R8000
1975 config SYS_HAS_CPU_R10000
1977 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1979 config SYS_HAS_CPU_RM7000
1982 config SYS_HAS_CPU_SB1
1985 config SYS_HAS_CPU_CAVIUM_OCTEON
1988 config SYS_HAS_CPU_BMIPS
1991 config SYS_HAS_CPU_BMIPS32_3300
1993 select SYS_HAS_CPU_BMIPS
1995 config SYS_HAS_CPU_BMIPS4350
1997 select SYS_HAS_CPU_BMIPS
1999 config SYS_HAS_CPU_BMIPS4380
2001 select SYS_HAS_CPU_BMIPS
2003 config SYS_HAS_CPU_BMIPS5000
2005 select SYS_HAS_CPU_BMIPS
2006 select ARCH_HAS_SYNC_DMA_FOR_CPU
2008 config SYS_HAS_CPU_XLR
2011 config SYS_HAS_CPU_XLP
2015 # CPU may reorder R->R, R->W, W->R, W->W
2016 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2018 config WEAK_ORDERING
2022 # CPU may reorder reads and writes beyond LL/SC
2023 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2025 config WEAK_REORDERING_BEYOND_LLSC
2030 # These two indicate any level of the MIPS32 and MIPS64 architecture
2034 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2038 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2041 # These indicate the revision of the architecture
2045 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2049 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2055 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2057 select HAVE_ARCH_BITREVERSE
2058 select MIPS_ASID_BITS_VARIABLE
2059 select MIPS_CRC_SUPPORT
2062 config TARGET_ISA_REV
2064 default 1 if CPU_MIPSR1
2065 default 2 if CPU_MIPSR2
2066 default 6 if CPU_MIPSR6
2069 Reflects the ISA revision being targeted by the kernel build. This
2070 is effectively the Kconfig equivalent of MIPS_ISA_REV.
2078 config SYS_SUPPORTS_32BIT_KERNEL
2080 config SYS_SUPPORTS_64BIT_KERNEL
2082 config CPU_SUPPORTS_32BIT_KERNEL
2084 config CPU_SUPPORTS_64BIT_KERNEL
2086 config CPU_SUPPORTS_CPUFREQ
2088 config CPU_SUPPORTS_ADDRWINCFG
2090 config CPU_SUPPORTS_HUGEPAGES
2092 depends on !(32BIT && (ARCH_PHYS_ADDR_T_64BIT || EVA))
2093 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2095 config MIPS_PGD_C0_CONTEXT
2097 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2100 # Set to y for ptrace access to watch registers.
2102 config HARDWARE_WATCHPOINTS
2104 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2109 prompt "Kernel code model"
2111 You should only select this option if you have a workload that
2112 actually benefits from 64-bit processing or if your machine has
2113 large memory. You will only be presented a single option in this
2114 menu if your system does not support both 32-bit and 64-bit kernels.
2117 bool "32-bit kernel"
2118 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2121 Select this option if you want to build a 32-bit kernel.
2124 bool "64-bit kernel"
2125 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2127 Select this option if you want to build a 64-bit kernel.
2132 bool "KVM Guest Kernel"
2133 depends on BROKEN_ON_SMP
2135 Select this option if building a guest kernel for KVM (Trap & Emulate)
2138 config KVM_GUEST_TIMER_FREQ
2139 int "Count/Compare Timer Frequency (MHz)"
2140 depends on KVM_GUEST
2143 Set this to non-zero if building a guest kernel for KVM to skip RTC
2144 emulation when determining guest CPU Frequency. Instead, the guest's
2145 timer frequency is specified directly.
2147 config MIPS_VA_BITS_48
2148 bool "48 bits virtual memory"
2151 Support a maximum at least 48 bits of application virtual
2152 memory. Default is 40 bits or less, depending on the CPU.
2153 For page sizes 16k and above, this option results in a small
2154 memory overhead for page tables. For 4k page size, a fourth
2155 level of page tables is added which imposes both a memory
2156 overhead as well as slower TLB fault handling.
2161 prompt "Kernel page size"
2162 default PAGE_SIZE_4KB
2164 config PAGE_SIZE_4KB
2166 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2168 This option select the standard 4kB Linux page size. On some
2169 R3000-family processors this is the only available page size. Using
2170 4kB page size will minimize memory consumption and is therefore
2171 recommended for low memory systems.
2173 config PAGE_SIZE_8KB
2175 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2176 depends on !MIPS_VA_BITS_48
2178 Using 8kB page size will result in higher performance kernel at
2179 the price of higher memory consumption. This option is available
2180 only on R8000 and cnMIPS processors. Note that you will need a
2181 suitable Linux distribution to support this.
2183 config PAGE_SIZE_16KB
2185 depends on !CPU_R3000 && !CPU_TX39XX
2187 Using 16kB page size will result in higher performance kernel at
2188 the price of higher memory consumption. This option is available on
2189 all non-R3000 family processors. Note that you will need a suitable
2190 Linux distribution to support this.
2192 config PAGE_SIZE_32KB
2194 depends on CPU_CAVIUM_OCTEON
2195 depends on !MIPS_VA_BITS_48
2197 Using 32kB page size will result in higher performance kernel at
2198 the price of higher memory consumption. This option is available
2199 only on cnMIPS cores. Note that you will need a suitable Linux
2200 distribution to support this.
2202 config PAGE_SIZE_64KB
2204 depends on !CPU_R3000 && !CPU_TX39XX
2206 Using 64kB page size will result in higher performance kernel at
2207 the price of higher memory consumption. This option is available on
2208 all non-R3000 family processor. Not that at the time of this
2209 writing this option is still high experimental.
2213 config FORCE_MAX_ZONEORDER
2214 int "Maximum zone order"
2215 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2216 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2217 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2218 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2219 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2220 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2224 The kernel memory allocator divides physically contiguous memory
2225 blocks into "zones", where each zone is a power of two number of
2226 pages. This option selects the largest power of two that the kernel
2227 keeps in the memory allocator. If you need to allocate very large
2228 blocks of physically contiguous memory, then you may need to
2229 increase this value.
2231 This config option is actually maximum order plus one. For example,
2232 a value of 11 means that the largest free memory block is 2^10 pages.
2234 The page size is not necessarily 4KB. Keep this in mind
2235 when choosing a value for this option.
2240 config IP22_CPU_SCACHE
2245 # Support for a MIPS32 / MIPS64 style S-caches
2247 config MIPS_CPU_SCACHE
2251 config R5000_CPU_SCACHE
2255 config RM7000_CPU_SCACHE
2259 config SIBYTE_DMA_PAGEOPS
2260 bool "Use DMA to clear/copy pages"
2263 Instead of using the CPU to zero and copy pages, use a Data Mover
2264 channel. These DMA channels are otherwise unused by the standard
2265 SiByte Linux port. Seems to give a small performance benefit.
2267 config CPU_HAS_PREFETCH
2270 config CPU_GENERIC_DUMP_TLB
2272 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
2274 config MIPS_FP_SUPPORT
2275 bool "Floating Point support" if EXPERT
2278 Select y to include support for floating point in the kernel
2279 including initialization of FPU hardware, FP context save & restore
2280 and emulation of an FPU where necessary. Without this support any
2281 userland program attempting to use floating point instructions will
2284 If you know that your userland will not attempt to use floating point
2285 instructions then you can say n here to shrink the kernel a little.
2289 config CPU_R2300_FPU
2291 depends on MIPS_FP_SUPPORT
2292 default y if CPU_R3000 || CPU_TX39XX
2296 depends on MIPS_FP_SUPPORT
2297 default y if !CPU_R2300_FPU
2299 config CPU_R4K_CACHE_TLB
2301 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2304 bool "MIPS MT SMP support (1 TC on each available VPE)"
2306 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2307 select CPU_MIPSR2_IRQ_VI
2308 select CPU_MIPSR2_IRQ_EI
2313 select SYS_SUPPORTS_SMP
2314 select SYS_SUPPORTS_SCHED_SMT
2315 select MIPS_PERF_SHARED_TC_COUNTERS
2317 This is a kernel model which is known as SMVP. This is supported
2318 on cores with the MT ASE and uses the available VPEs to implement
2319 virtual processors which supports SMP. This is equivalent to the
2320 Intel Hyperthreading feature. For further information go to
2321 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2327 bool "SMT (multithreading) scheduler support"
2328 depends on SYS_SUPPORTS_SCHED_SMT
2331 SMT scheduler support improves the CPU scheduler's decision making
2332 when dealing with MIPS MT enabled cores at a cost of slightly
2333 increased overhead in some places. If unsure say N here.
2335 config SYS_SUPPORTS_SCHED_SMT
2338 config SYS_SUPPORTS_MULTITHREADING
2341 config MIPS_MT_FPAFF
2342 bool "Dynamic FPU affinity for FP-intensive threads"
2344 depends on MIPS_MT_SMP
2346 config MIPSR2_TO_R6_EMULATOR
2347 bool "MIPS R2-to-R6 emulator"
2348 depends on CPU_MIPSR6
2349 depends on MIPS_FP_SUPPORT
2352 Choose this option if you want to run non-R6 MIPS userland code.
2353 Even if you say 'Y' here, the emulator will still be disabled by
2354 default. You can enable it using the 'mipsr2emu' kernel option.
2355 The only reason this is a build-time option is to save ~14K from the
2358 config SYS_SUPPORTS_VPE_LOADER
2360 depends on SYS_SUPPORTS_MULTITHREADING
2362 Indicates that the platform supports the VPE loader, and provides
2365 config MIPS_VPE_LOADER
2366 bool "VPE loader support."
2367 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2368 select CPU_MIPSR2_IRQ_VI
2369 select CPU_MIPSR2_IRQ_EI
2372 Includes a loader for loading an elf relocatable object
2373 onto another VPE and running it.
2375 config MIPS_VPE_LOADER_CMP
2378 depends on MIPS_VPE_LOADER && MIPS_CMP
2380 config MIPS_VPE_LOADER_MT
2383 depends on MIPS_VPE_LOADER && !MIPS_CMP
2385 config MIPS_VPE_LOADER_TOM
2386 bool "Load VPE program into memory hidden from linux"
2387 depends on MIPS_VPE_LOADER
2390 The loader can use memory that is present but has been hidden from
2391 Linux using the kernel command line option "mem=xxMB". It's up to
2392 you to ensure the amount you put in the option and the space your
2393 program requires is less or equal to the amount physically present.
2395 config MIPS_VPE_APSP_API
2396 bool "Enable support for AP/SP API (RTLX)"
2397 depends on MIPS_VPE_LOADER
2399 config MIPS_VPE_APSP_API_CMP
2402 depends on MIPS_VPE_APSP_API && MIPS_CMP
2404 config MIPS_VPE_APSP_API_MT
2407 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2410 bool "MIPS CMP framework support (DEPRECATED)"
2411 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2414 select SYS_SUPPORTS_SMP
2415 select WEAK_ORDERING
2418 Select this if you are using a bootloader which implements the "CMP
2419 framework" protocol (ie. YAMON) and want your kernel to make use of
2420 its ability to start secondary CPUs.
2422 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2426 bool "MIPS Coherent Processing System support"
2427 depends on SYS_SUPPORTS_MIPS_CPS
2429 select MIPS_CPS_PM if HOTPLUG_CPU
2431 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2432 select SYS_SUPPORTS_HOTPLUG_CPU
2433 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2434 select SYS_SUPPORTS_SMP
2435 select WEAK_ORDERING
2437 Select this if you wish to run an SMP kernel across multiple cores
2438 within a MIPS Coherent Processing System. When this option is
2439 enabled the kernel will probe for other cores and boot them with
2440 no external assistance. It is safe to enable this when hardware
2441 support is unavailable.
2454 config SB1_PASS_2_WORKAROUNDS
2456 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2459 config SB1_PASS_2_1_WORKAROUNDS
2461 depends on CPU_SB1 && CPU_SB1_PASS_2
2465 prompt "SmartMIPS or microMIPS ASE support"
2467 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2470 Select this if you want neither microMIPS nor SmartMIPS support
2472 config CPU_HAS_SMARTMIPS
2473 depends on SYS_SUPPORTS_SMARTMIPS
2476 SmartMIPS is a extension of the MIPS32 architecture aimed at
2477 increased security at both hardware and software level for
2478 smartcards. Enabling this option will allow proper use of the
2479 SmartMIPS instructions by Linux applications. However a kernel with
2480 this option will not work on a MIPS core without SmartMIPS core. If
2481 you don't know you probably don't have SmartMIPS and should say N
2484 config CPU_MICROMIPS
2485 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2488 When this option is enabled the kernel will be built using the
2494 bool "Support for the MIPS SIMD Architecture"
2495 depends on CPU_SUPPORTS_MSA
2496 depends on MIPS_FP_SUPPORT
2497 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2499 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2500 and a set of SIMD instructions to operate on them. When this option
2501 is enabled the kernel will support allocating & switching MSA
2502 vector register contexts. If you know that your kernel will only be
2503 running on CPUs which do not support MSA or that your userland will
2504 not be making use of it then you may wish to say N here to reduce
2505 the size & complexity of your kernel.
2518 config CPU_HAS_LOAD_STORE_LR
2521 CPU has support for unaligned load and store instructions:
2522 LWL, LWR, SWL, SWR (Load/store word left/right).
2523 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit systems).
2526 # Vectored interrupt mode is an R2 feature
2528 config CPU_MIPSR2_IRQ_VI
2532 # Extended interrupt mode is an R2 feature
2534 config CPU_MIPSR2_IRQ_EI
2539 depends on !CPU_R3000
2545 config CPU_DADDI_WORKAROUNDS
2548 config CPU_R4000_WORKAROUNDS
2550 select CPU_R4400_WORKAROUNDS
2552 config CPU_R4400_WORKAROUNDS
2555 config MIPS_ASID_SHIFT
2557 default 6 if CPU_R3000 || CPU_TX39XX
2558 default 4 if CPU_R8000
2561 config MIPS_ASID_BITS
2563 default 0 if MIPS_ASID_BITS_VARIABLE
2564 default 6 if CPU_R3000 || CPU_TX39XX
2567 config MIPS_ASID_BITS_VARIABLE
2570 config MIPS_CRC_SUPPORT
2574 # - Highmem only makes sense for the 32-bit kernel.
2575 # - The current highmem code will only work properly on physically indexed
2576 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2577 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2578 # moment we protect the user and offer the highmem option only on machines
2579 # where it's known to be safe. This will not offer highmem on a few systems
2580 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2581 # indexed CPUs but we're playing safe.
2582 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2583 # know they might have memory configurations that could make use of highmem
2587 bool "High Memory Support"
2588 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2590 config CPU_SUPPORTS_HIGHMEM
2593 config SYS_SUPPORTS_HIGHMEM
2596 config SYS_SUPPORTS_SMARTMIPS
2599 config SYS_SUPPORTS_MICROMIPS
2602 config SYS_SUPPORTS_MIPS16
2605 This option must be set if a kernel might be executed on a MIPS16-
2606 enabled CPU even if MIPS16 is not actually being used. In other
2607 words, it makes the kernel MIPS16-tolerant.
2609 config CPU_SUPPORTS_MSA
2612 config ARCH_FLATMEM_ENABLE
2614 depends on !NUMA && !CPU_LOONGSON2
2616 config ARCH_DISCONTIGMEM_ENABLE
2618 default y if SGI_IP27
2620 Say Y to support efficient handling of discontiguous physical memory,
2621 for architectures which are either NUMA (Non-Uniform Memory Access)
2622 or have huge holes in the physical address space for other reasons.
2623 See <file:Documentation/vm/numa.rst> for more.
2625 config ARCH_SPARSEMEM_ENABLE
2627 select SPARSEMEM_STATIC
2631 depends on SYS_SUPPORTS_NUMA
2633 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2634 Access). This option improves performance on systems with more
2635 than two nodes; on two node systems it is generally better to
2636 leave it disabled; on single node systems disable this option
2639 config SYS_SUPPORTS_NUMA
2643 bool "Relocatable kernel"
2644 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2646 This builds a kernel image that retains relocation information
2647 so it can be loaded someplace besides the default 1MB.
2648 The relocations make the kernel binary about 15% larger,
2649 but are discarded at runtime
2651 config RELOCATION_TABLE_SIZE
2652 hex "Relocation table size"
2653 depends on RELOCATABLE
2654 range 0x0 0x01000000
2655 default "0x00100000"
2657 A table of relocation data will be appended to the kernel binary
2658 and parsed at boot to fix up the relocated kernel.
2660 This option allows the amount of space reserved for the table to be
2661 adjusted, although the default of 1Mb should be ok in most cases.
2663 The build will fail and a valid size suggested if this is too small.
2665 If unsure, leave at the default value.
2667 config RANDOMIZE_BASE
2668 bool "Randomize the address of the kernel image"
2669 depends on RELOCATABLE
2671 Randomizes the physical and virtual address at which the
2672 kernel image is loaded, as a security feature that
2673 deters exploit attempts relying on knowledge of the location
2674 of kernel internals.
2676 Entropy is generated using any coprocessor 0 registers available.
2678 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2682 config RANDOMIZE_BASE_MAX_OFFSET
2683 hex "Maximum kASLR offset" if EXPERT
2684 depends on RANDOMIZE_BASE
2685 range 0x0 0x40000000 if EVA || 64BIT
2686 range 0x0 0x08000000
2687 default "0x01000000"
2689 When kASLR is active, this provides the maximum offset that will
2690 be applied to the kernel image. It should be set according to the
2691 amount of physical RAM available in the target system minus
2692 PHYSICAL_START and must be a power of 2.
2694 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2695 EVA or 64-bit. The default is 16Mb.
2700 depends on NEED_MULTIPLE_NODES
2702 config HW_PERF_EVENTS
2703 bool "Enable hardware performance counter support for perf events"
2704 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2707 Enable hardware performance counter support for perf events. If
2708 disabled, perf events will use software events only.
2711 bool "Multi-Processing support"
2712 depends on SYS_SUPPORTS_SMP
2714 This enables support for systems with more than one CPU. If you have
2715 a system with only one CPU, say N. If you have a system with more
2716 than one CPU, say Y.
2718 If you say N here, the kernel will run on uni- and multiprocessor
2719 machines, but will use only one CPU of a multiprocessor machine. If
2720 you say Y here, the kernel will run on many, but not all,
2721 uniprocessor machines. On a uniprocessor machine, the kernel
2722 will run faster if you say N here.
2724 People using multiprocessor machines who say Y here should also say
2725 Y to "Enhanced Real Time Clock Support", below.
2727 See also the SMP-HOWTO available at
2728 <http://www.tldp.org/docs.html#howto>.
2730 If you don't know what to do here, say N.
2733 bool "Support for hot-pluggable CPUs"
2734 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2736 Say Y here to allow turning CPUs off and on. CPUs can be
2737 controlled through /sys/devices/system/cpu.
2738 (Note: power management support will enable this option
2739 automatically on SMP systems. )
2740 Say N if you want to disable CPU hotplug.
2745 config SYS_SUPPORTS_MIPS_CMP
2748 config SYS_SUPPORTS_MIPS_CPS
2751 config SYS_SUPPORTS_SMP
2754 config NR_CPUS_DEFAULT_4
2757 config NR_CPUS_DEFAULT_8
2760 config NR_CPUS_DEFAULT_16
2763 config NR_CPUS_DEFAULT_32
2766 config NR_CPUS_DEFAULT_64
2770 int "Maximum number of CPUs (2-256)"
2773 default "4" if NR_CPUS_DEFAULT_4
2774 default "8" if NR_CPUS_DEFAULT_8
2775 default "16" if NR_CPUS_DEFAULT_16
2776 default "32" if NR_CPUS_DEFAULT_32
2777 default "64" if NR_CPUS_DEFAULT_64
2779 This allows you to specify the maximum number of CPUs which this
2780 kernel will support. The maximum supported value is 32 for 32-bit
2781 kernel and 64 for 64-bit kernels; the minimum value which makes
2782 sense is 1 for Qemu (useful only for kernel debugging purposes)
2783 and 2 for all others.
2785 This is purely to save memory - each supported CPU adds
2786 approximately eight kilobytes to the kernel image. For best
2787 performance should round up your number of processors to the next
2790 config MIPS_PERF_SHARED_TC_COUNTERS
2793 config MIPS_NR_CPU_NR_MAP_1024
2796 config MIPS_NR_CPU_NR_MAP
2799 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2800 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2803 # Timer Interrupt Frequency Configuration
2807 prompt "Timer frequency"
2810 Allows the configuration of the timer frequency.
2813 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2816 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2819 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2822 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2825 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2828 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2831 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2834 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2838 config SYS_SUPPORTS_24HZ
2841 config SYS_SUPPORTS_48HZ
2844 config SYS_SUPPORTS_100HZ
2847 config SYS_SUPPORTS_128HZ
2850 config SYS_SUPPORTS_250HZ
2853 config SYS_SUPPORTS_256HZ
2856 config SYS_SUPPORTS_1000HZ
2859 config SYS_SUPPORTS_1024HZ
2862 config SYS_SUPPORTS_ARBIT_HZ
2864 default y if !SYS_SUPPORTS_24HZ && \
2865 !SYS_SUPPORTS_48HZ && \
2866 !SYS_SUPPORTS_100HZ && \
2867 !SYS_SUPPORTS_128HZ && \
2868 !SYS_SUPPORTS_250HZ && \
2869 !SYS_SUPPORTS_256HZ && \
2870 !SYS_SUPPORTS_1000HZ && \
2871 !SYS_SUPPORTS_1024HZ
2877 default 100 if HZ_100
2878 default 128 if HZ_128
2879 default 250 if HZ_250
2880 default 256 if HZ_256
2881 default 1000 if HZ_1000
2882 default 1024 if HZ_1024
2885 def_bool HIGH_RES_TIMERS
2888 bool "Kexec system call"
2891 kexec is a system call that implements the ability to shutdown your
2892 current kernel, and to start another kernel. It is like a reboot
2893 but it is independent of the system firmware. And like a reboot
2894 you can start any kernel with it, not just Linux.
2896 The name comes from the similarity to the exec system call.
2898 It is an ongoing process to be certain the hardware in a machine
2899 is properly shutdown, so do not be surprised if this code does not
2900 initially work for you. As of this writing the exact hardware
2901 interface is strongly in flux, so no good recommendation can be
2905 bool "Kernel crash dumps"
2907 Generate crash dump after being started by kexec.
2908 This should be normally only set in special crash dump kernels
2909 which are loaded in the main kernel with kexec-tools into
2910 a specially reserved region and then later executed after
2911 a crash by kdump/kexec. The crash dump kernel must be compiled
2912 to a memory address not used by the main kernel or firmware using
2915 config PHYSICAL_START
2916 hex "Physical address where the kernel is loaded"
2917 default "0xffffffff84000000"
2918 depends on CRASH_DUMP
2920 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2921 If you plan to use kernel for capturing the crash dump change
2922 this value to start of the reserved region (the "X" value as
2923 specified in the "crashkernel=YM@XM" command line boot parameter
2924 passed to the panic-ed kernel).
2927 bool "Enable seccomp to safely compute untrusted bytecode"
2931 This kernel feature is useful for number crunching applications
2932 that may need to compute untrusted bytecode during their
2933 execution. By using pipes or other transports made available to
2934 the process as file descriptors supporting the read/write
2935 syscalls, it's possible to isolate those applications in
2936 their own address space using seccomp. Once seccomp is
2937 enabled via /proc/<pid>/seccomp, it cannot be disabled
2938 and the task is only allowed to execute a few safe syscalls
2939 defined by each seccomp mode.
2941 If unsure, say Y. Only embedded should say N here.
2943 config MIPS_O32_FP64_SUPPORT
2944 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
2945 depends on 32BIT || MIPS32_O32
2947 When this is enabled, the kernel will support use of 64-bit floating
2948 point registers with binaries using the O32 ABI along with the
2949 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2950 32-bit MIPS systems this support is at the cost of increasing the
2951 size and complexity of the compiled FPU emulator. Thus if you are
2952 running a MIPS32 system and know that none of your userland binaries
2953 will require 64-bit floating point, you may wish to reduce the size
2954 of your kernel & potentially improve FP emulation performance by
2957 Although binutils currently supports use of this flag the details
2958 concerning its effect upon the O32 ABI in userland are still being
2959 worked on. In order to avoid userland becoming dependant upon current
2960 behaviour before the details have been finalised, this option should
2961 be considered experimental and only enabled by those working upon
2969 select OF_EARLY_FLATTREE
2979 prompt "Kernel appended dtb support" if USE_OF
2980 default MIPS_NO_APPENDED_DTB
2982 config MIPS_NO_APPENDED_DTB
2985 Do not enable appended dtb support.
2987 config MIPS_ELF_APPENDED_DTB
2990 With this option, the boot code will look for a device tree binary
2991 DTB) included in the vmlinux ELF section .appended_dtb. By default
2992 it is empty and the DTB can be appended using binutils command
2995 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2997 This is meant as a backward compatiblity convenience for those
2998 systems with a bootloader that can't be upgraded to accommodate
2999 the documented boot protocol using a device tree.
3001 config MIPS_RAW_APPENDED_DTB
3002 bool "vmlinux.bin or vmlinuz.bin"
3004 With this option, the boot code will look for a device tree binary
3005 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
3006 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
3008 This is meant as a backward compatibility convenience for those
3009 systems with a bootloader that can't be upgraded to accommodate
3010 the documented boot protocol using a device tree.
3012 Beware that there is very little in terms of protection against
3013 this option being confused by leftover garbage in memory that might
3014 look like a DTB header after a reboot if no actual DTB is appended
3015 to vmlinux.bin. Do not leave this option active in a production kernel
3016 if you don't intend to always append a DTB.
3020 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
3021 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
3024 default MIPS_CMDLINE_FROM_BOOTLOADER
3026 config MIPS_CMDLINE_FROM_DTB
3028 bool "Dtb kernel arguments if available"
3030 config MIPS_CMDLINE_DTB_EXTEND
3032 bool "Extend dtb kernel arguments with bootloader arguments"
3034 config MIPS_CMDLINE_FROM_BOOTLOADER
3035 bool "Bootloader kernel arguments if available"
3037 config MIPS_CMDLINE_BUILTIN_EXTEND
3038 depends on CMDLINE_BOOL
3039 bool "Extend builtin kernel arguments with bootloader arguments"
3044 config LOCKDEP_SUPPORT
3048 config STACKTRACE_SUPPORT
3052 config HAVE_LATENCYTOP_SUPPORT
3056 config PGTABLE_LEVELS
3058 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3059 default 3 if 64BIT && !PAGE_SIZE_64KB
3062 config MIPS_AUTO_PFN_OFFSET
3065 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3067 config PCI_DRIVERS_GENERIC
3068 select PCI_DOMAINS_GENERIC if PCI
3071 config PCI_DRIVERS_LEGACY
3072 def_bool !PCI_DRIVERS_GENERIC
3073 select NO_GENERIC_PCI_IOPORT_MAP
3074 select PCI_DOMAINS if PCI
3077 # ISA support is now enabled via select. Too many systems still have the one
3078 # or other ISA chip on the board that users don't know about so don't expect
3079 # users to choose the right thing ...
3085 bool "TURBOchannel support"
3086 depends on MACH_DECSTATION
3088 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3089 processors. TURBOchannel programming specifications are available
3091 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3093 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3094 Linux driver support status is documented at:
3095 <http://www.linux-mips.org/wiki/DECstation>
3101 config ARCH_MMAP_RND_BITS_MIN
3105 config ARCH_MMAP_RND_BITS_MAX
3109 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3112 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3119 select MIPS_EXTERNAL_TIMER
3132 config MIPS32_COMPAT
3138 config SYSVIPC_COMPAT
3142 bool "Kernel support for o32 binaries"
3144 select ARCH_WANT_OLD_COMPAT_IPC
3146 select MIPS32_COMPAT
3147 select SYSVIPC_COMPAT if SYSVIPC
3149 Select this option if you want to run o32 binaries. These are pure
3150 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3151 existing binaries are in this format.
3156 bool "Kernel support for n32 binaries"
3158 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3160 select MIPS32_COMPAT
3161 select SYSVIPC_COMPAT if SYSVIPC
3163 Select this option if you want to run n32 binaries. These are
3164 64-bit binaries using 32-bit quantities for addressing and certain
3165 data that would normally be 64-bit. They are used in special
3172 default y if MIPS32_O32 || MIPS32_N32
3175 menu "Power management options"
3177 config ARCH_HIBERNATION_POSSIBLE
3179 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3181 config ARCH_SUSPEND_POSSIBLE
3183 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3185 source "kernel/power/Kconfig"
3189 config MIPS_EXTERNAL_TIMER
3192 menu "CPU Power Management"
3194 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3195 source "drivers/cpufreq/Kconfig"
3198 source "drivers/cpuidle/Kconfig"
3202 source "drivers/firmware/Kconfig"
3204 source "arch/mips/kvm/Kconfig"