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_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
9 select ARCH_HAS_UBSAN_SANITIZE_ALL
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_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
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
25 select GENERIC_GETTIMEOFDAY
27 select GENERIC_IRQ_PROBE
28 select GENERIC_IRQ_SHOW
29 select GENERIC_ISA_DMA if EISA
30 select GENERIC_LIB_ASHLDI3
31 select GENERIC_LIB_ASHRDI3
32 select GENERIC_LIB_CMPDI2
33 select GENERIC_LIB_LSHRDI3
34 select GENERIC_LIB_UCMPDI2
35 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
36 select GENERIC_SMP_IDLE_THREAD
37 select GENERIC_TIME_VSYSCALL
38 select GUP_GET_PTE_LOW_HIGH if CPU_MIPS32 && PHYS_ADDR_T_64BIT
39 select HANDLE_DOMAIN_IRQ
40 select HAVE_ARCH_COMPILER_H
41 select HAVE_ARCH_JUMP_LABEL
43 select HAVE_ARCH_MMAP_RND_BITS if MMU
44 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
45 select HAVE_ARCH_SECCOMP_FILTER
46 select HAVE_ARCH_TRACEHOOK
47 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES
48 select HAVE_ASM_MODVERSIONS
49 select HAVE_EBPF_JIT if (!CPU_MICROMIPS)
50 select HAVE_CONTEXT_TRACKING
51 select HAVE_COPY_THREAD_TLS
52 select HAVE_C_RECORDMCOUNT
53 select HAVE_DEBUG_KMEMLEAK
54 select HAVE_DEBUG_STACKOVERFLOW
55 select HAVE_DMA_CONTIGUOUS
56 select HAVE_DYNAMIC_FTRACE
57 select HAVE_EXIT_THREAD
59 select HAVE_FTRACE_MCOUNT_RECORD
60 select HAVE_FUNCTION_GRAPH_TRACER
61 select HAVE_FUNCTION_TRACER
63 select HAVE_IOREMAP_PROT
64 select HAVE_IRQ_EXIT_ON_IRQ_STACK
65 select HAVE_IRQ_TIME_ACCOUNTING
67 select HAVE_KRETPROBES
68 select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
69 select HAVE_MEMBLOCK_NODE_MAP
70 select HAVE_MOD_ARCH_SPECIFIC
73 select HAVE_PERF_EVENTS
74 select HAVE_REGS_AND_STACK_ACCESS_API
76 select HAVE_SPARSE_SYSCALL_NR
77 select HAVE_STACKPROTECTOR
78 select HAVE_SYSCALL_TRACEPOINTS
79 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
80 select HAVE_GENERIC_VDSO
81 select IRQ_FORCED_THREADING
83 select MODULES_USE_ELF_RELA if MODULES && 64BIT
84 select MODULES_USE_ELF_REL if MODULES
85 select PERF_USE_VMALLOC
87 select SYSCTL_EXCEPTION_TRACE
89 select ARCH_HAS_PTE_SPECIAL if !(32BIT && CPU_HAS_RIXI)
91 menu "Machine selection"
98 bool "Generic board-agnostic MIPS kernel"
102 select CLKSRC_MIPS_GIC
104 select CPU_MIPSR2_IRQ_VI
105 select CPU_MIPSR2_IRQ_EI
107 select DMA_PERDEV_COHERENT
111 select MIPS_AUTO_PFN_OFFSET
112 select MIPS_CPU_SCACHE
114 select MIPS_L1_CACHE_SHIFT_7
115 select NO_EXCEPT_FILL
116 select PCI_DRIVERS_GENERIC
120 select SYS_HAS_CPU_MIPS32_R1
121 select SYS_HAS_CPU_MIPS32_R2
122 select SYS_HAS_CPU_MIPS32_R6
123 select SYS_HAS_CPU_MIPS64_R1
124 select SYS_HAS_CPU_MIPS64_R2
125 select SYS_HAS_CPU_MIPS64_R6
126 select SYS_SUPPORTS_32BIT_KERNEL
127 select SYS_SUPPORTS_64BIT_KERNEL
128 select SYS_SUPPORTS_BIG_ENDIAN
129 select SYS_SUPPORTS_HIGHMEM
130 select SYS_SUPPORTS_LITTLE_ENDIAN
131 select SYS_SUPPORTS_MICROMIPS
132 select SYS_SUPPORTS_MIPS_CPS
133 select SYS_SUPPORTS_MIPS16
134 select SYS_SUPPORTS_MULTITHREADING
135 select SYS_SUPPORTS_RELOCATABLE
136 select SYS_SUPPORTS_SMARTMIPS
137 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
138 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
139 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
140 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
141 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
142 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
146 Select this to build a kernel which aims to support multiple boards,
147 generally using a flattened device tree passed from the bootloader
148 using the boot protocol defined in the UHI (Unified Hosting
149 Interface) specification.
152 bool "Alchemy processor based machines"
153 select PHYS_ADDR_T_64BIT
157 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
158 select SYS_HAS_CPU_MIPS32_R1
159 select SYS_SUPPORTS_32BIT_KERNEL
160 select SYS_SUPPORTS_APM_EMULATION
162 select SYS_SUPPORTS_ZBOOT
166 bool "Texas Instruments AR7"
168 select DMA_NONCOHERENT
172 select NO_EXCEPT_FILL
174 select SYS_HAS_CPU_MIPS32_R1
175 select SYS_HAS_EARLY_PRINTK
176 select SYS_SUPPORTS_32BIT_KERNEL
177 select SYS_SUPPORTS_LITTLE_ENDIAN
178 select SYS_SUPPORTS_MIPS16
179 select SYS_SUPPORTS_ZBOOT_UART16550
184 Support for the Texas Instruments AR7 System-on-a-Chip
185 family: TNETD7100, 7200 and 7300.
188 bool "Atheros AR231x/AR531x SoC support"
191 select DMA_NONCOHERENT
194 select SYS_HAS_CPU_MIPS32_R1
195 select SYS_SUPPORTS_BIG_ENDIAN
196 select SYS_SUPPORTS_32BIT_KERNEL
197 select SYS_HAS_EARLY_PRINTK
199 Support for Atheros AR231x and Atheros AR531x based boards
202 bool "Atheros AR71XX/AR724X/AR913X based boards"
203 select ARCH_HAS_RESET_CONTROLLER
207 select DMA_NONCOHERENT
214 select SYS_HAS_CPU_MIPS32_R2
215 select SYS_HAS_EARLY_PRINTK
216 select SYS_SUPPORTS_32BIT_KERNEL
217 select SYS_SUPPORTS_BIG_ENDIAN
218 select SYS_SUPPORTS_MIPS16
219 select SYS_SUPPORTS_ZBOOT_UART_PROM
221 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
223 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
226 bool "Broadcom Generic BMIPS kernel"
227 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
228 select ARCH_HAS_PHYS_TO_DMA
230 select NO_EXCEPT_FILL
236 select BCM6345_L1_IRQ
237 select BCM7038_L1_IRQ
238 select BCM7120_L2_IRQ
239 select BRCMSTB_L2_IRQ
241 select DMA_NONCOHERENT
242 select SYS_SUPPORTS_32BIT_KERNEL
243 select SYS_SUPPORTS_LITTLE_ENDIAN
244 select SYS_SUPPORTS_BIG_ENDIAN
245 select SYS_SUPPORTS_HIGHMEM
246 select SYS_HAS_CPU_BMIPS32_3300
247 select SYS_HAS_CPU_BMIPS4350
248 select SYS_HAS_CPU_BMIPS4380
249 select SYS_HAS_CPU_BMIPS5000
251 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
252 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
253 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
254 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
255 select HARDIRQS_SW_RESEND
257 Build a generic DT-based kernel image that boots on select
258 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
259 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
260 must be set appropriately for your board.
263 bool "Broadcom BCM47XX based boards"
267 select DMA_NONCOHERENT
270 select SYS_HAS_CPU_MIPS32_R1
271 select NO_EXCEPT_FILL
272 select SYS_SUPPORTS_32BIT_KERNEL
273 select SYS_SUPPORTS_LITTLE_ENDIAN
274 select SYS_SUPPORTS_MIPS16
275 select SYS_SUPPORTS_ZBOOT
276 select SYS_HAS_EARLY_PRINTK
277 select USE_GENERIC_EARLY_PRINTK_8250
279 select LEDS_GPIO_REGISTER
282 select BCM47XX_SSB if !BCM47XX_BCMA
284 Support for BCM47XX based boards
287 bool "Broadcom BCM63XX based boards"
292 select DMA_NONCOHERENT
294 select SYS_SUPPORTS_32BIT_KERNEL
295 select SYS_SUPPORTS_BIG_ENDIAN
296 select SYS_HAS_EARLY_PRINTK
300 select MIPS_L1_CACHE_SHIFT_4
303 Support for BCM63XX based boards
310 select DMA_NONCOHERENT
316 select PCI_GT64XXX_PCI0
317 select SYS_HAS_CPU_NEVADA
318 select SYS_HAS_EARLY_PRINTK
319 select SYS_SUPPORTS_32BIT_KERNEL
320 select SYS_SUPPORTS_64BIT_KERNEL
321 select SYS_SUPPORTS_LITTLE_ENDIAN
322 select USE_GENERIC_EARLY_PRINTK_8250
324 config MACH_DECSTATION
328 select CEVT_R4K if CPU_R4X00
330 select CSRC_R4K if CPU_R4X00
331 select CPU_DADDI_WORKAROUNDS if 64BIT
332 select CPU_R4000_WORKAROUNDS if 64BIT
333 select CPU_R4400_WORKAROUNDS if 64BIT
334 select DMA_NONCOHERENT
337 select SYS_HAS_CPU_R3000
338 select SYS_HAS_CPU_R4X00
339 select SYS_SUPPORTS_32BIT_KERNEL
340 select SYS_SUPPORTS_64BIT_KERNEL
341 select SYS_SUPPORTS_LITTLE_ENDIAN
342 select SYS_SUPPORTS_128HZ
343 select SYS_SUPPORTS_256HZ
344 select SYS_SUPPORTS_1024HZ
345 select MIPS_L1_CACHE_SHIFT_4
347 This enables support for DEC's MIPS based workstations. For details
348 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
349 DECstation porting pages on <http://decstation.unix-ag.org/>.
351 If you have one of the following DECstation Models you definitely
352 want to choose R4xx0 for the CPU Type:
359 otherwise choose R3000.
362 bool "Jazz family of machines"
363 select ARCH_MIGHT_HAVE_PC_PARPORT
364 select ARCH_MIGHT_HAVE_PC_SERIO
367 select ARCH_MAY_HAVE_PC_FDC
370 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
371 select GENERIC_ISA_DMA
372 select HAVE_PCSPKR_PLATFORM
377 select SYS_HAS_CPU_R4X00
378 select SYS_SUPPORTS_32BIT_KERNEL
379 select SYS_SUPPORTS_64BIT_KERNEL
380 select SYS_SUPPORTS_100HZ
382 This a family of machines based on the MIPS R4030 chipset which was
383 used by several vendors to build RISC/os and Windows NT workstations.
384 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
385 Olivetti M700-10 workstations.
388 bool "Ingenic SoC based machines"
389 select SYS_SUPPORTS_32BIT_KERNEL
390 select SYS_SUPPORTS_LITTLE_ENDIAN
391 select SYS_SUPPORTS_ZBOOT_UART16550
392 select CPU_SUPPORTS_HUGEPAGES
393 select DMA_NONCOHERENT
398 select GENERIC_IRQ_CHIP
399 select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
404 bool "Lantiq based platforms"
405 select DMA_NONCOHERENT
409 select SYS_HAS_CPU_MIPS32_R1
410 select SYS_HAS_CPU_MIPS32_R2
411 select SYS_SUPPORTS_BIG_ENDIAN
412 select SYS_SUPPORTS_32BIT_KERNEL
413 select SYS_SUPPORTS_MIPS16
414 select SYS_SUPPORTS_MULTITHREADING
415 select SYS_SUPPORTS_VPE_LOADER
416 select SYS_HAS_EARLY_PRINTK
423 select PINCTRL_LANTIQ
424 select ARCH_HAS_RESET_CONTROLLER
425 select RESET_CONTROLLER
428 bool "LASAT Networks platforms"
432 select DMA_NONCOHERENT
433 select SYS_HAS_EARLY_PRINTK
436 select PCI_GT64XXX_PCI0
438 select R5000_CPU_SCACHE
439 select SYS_HAS_CPU_R5000
440 select SYS_SUPPORTS_32BIT_KERNEL
441 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
442 select SYS_SUPPORTS_LITTLE_ENDIAN
444 config MACH_LOONGSON32
445 bool "Loongson-1 family of machines"
446 select SYS_SUPPORTS_ZBOOT
448 This enables support for the Loongson-1 family of machines.
450 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
451 the Institute of Computing Technology (ICT), Chinese Academy of
454 config MACH_LOONGSON64
455 bool "Loongson-2/3 family of machines"
456 select SYS_SUPPORTS_ZBOOT
458 This enables the support of Loongson-2/3 family of machines.
460 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
461 family of multi-core CPUs. They are both 64-bit general-purpose
462 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
463 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
464 in the People's Republic of China. The chief architect is Professor
467 config MACH_PISTACHIO
468 bool "IMG Pistachio SoC based boards"
472 select CLKSRC_MIPS_GIC
475 select DMA_NONCOHERENT
480 select MIPS_CPU_SCACHE
484 select SYS_HAS_CPU_MIPS32_R2
485 select SYS_SUPPORTS_32BIT_KERNEL
486 select SYS_SUPPORTS_LITTLE_ENDIAN
487 select SYS_SUPPORTS_MIPS_CPS
488 select SYS_SUPPORTS_MULTITHREADING
489 select SYS_SUPPORTS_RELOCATABLE
490 select SYS_SUPPORTS_ZBOOT
491 select SYS_HAS_EARLY_PRINTK
492 select USE_GENERIC_EARLY_PRINTK_8250
495 This enables support for the IMG Pistachio SoC platform.
498 bool "MIPS Malta board"
499 select ARCH_MAY_HAVE_PC_FDC
500 select ARCH_MIGHT_HAVE_PC_PARPORT
501 select ARCH_MIGHT_HAVE_PC_SERIO
506 select CLKSRC_MIPS_GIC
509 select DMA_MAYBE_COHERENT
510 select GENERIC_ISA_DMA
511 select HAVE_PCSPKR_PLATFORM
518 select MIPS_CPU_SCACHE
520 select MIPS_L1_CACHE_SHIFT_6
522 select PCI_GT64XXX_PCI0
525 select SYS_HAS_CPU_MIPS32_R1
526 select SYS_HAS_CPU_MIPS32_R2
527 select SYS_HAS_CPU_MIPS32_R3_5
528 select SYS_HAS_CPU_MIPS32_R5
529 select SYS_HAS_CPU_MIPS32_R6
530 select SYS_HAS_CPU_MIPS64_R1
531 select SYS_HAS_CPU_MIPS64_R2
532 select SYS_HAS_CPU_MIPS64_R6
533 select SYS_HAS_CPU_NEVADA
534 select SYS_HAS_CPU_RM7000
535 select SYS_SUPPORTS_32BIT_KERNEL
536 select SYS_SUPPORTS_64BIT_KERNEL
537 select SYS_SUPPORTS_BIG_ENDIAN
538 select SYS_SUPPORTS_HIGHMEM
539 select SYS_SUPPORTS_LITTLE_ENDIAN
540 select SYS_SUPPORTS_MICROMIPS
541 select SYS_SUPPORTS_MIPS16
542 select SYS_SUPPORTS_MIPS_CMP
543 select SYS_SUPPORTS_MIPS_CPS
544 select SYS_SUPPORTS_MULTITHREADING
545 select SYS_SUPPORTS_RELOCATABLE
546 select SYS_SUPPORTS_SMARTMIPS
547 select SYS_SUPPORTS_VPE_LOADER
548 select SYS_SUPPORTS_ZBOOT
550 select ZONE_DMA32 if 64BIT
552 This enables support for the MIPS Technologies Malta evaluation
556 bool "Microchip PIC32 Family"
558 This enables support for the Microchip PIC32 family of platforms.
560 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
564 bool "NEC EMMA2RH Mark-eins board"
568 This enables support for the NEC Electronics Mark-eins boards.
571 bool "NEC VR4100 series based machines"
574 select SYS_HAS_CPU_VR41XX
575 select SYS_SUPPORTS_MIPS16
579 bool "NXP STB220 board"
582 Support for NXP Semiconductors STB220 Development Board.
589 Support for NXP Semiconductors STB225 Development Board.
592 bool "PMC-Sierra MSP chipsets"
595 select DMA_NONCOHERENT
597 select NO_EXCEPT_FILL
599 select SYS_HAS_CPU_MIPS32_R1
600 select SYS_HAS_CPU_MIPS32_R2
601 select SYS_SUPPORTS_32BIT_KERNEL
602 select SYS_SUPPORTS_BIG_ENDIAN
603 select SYS_SUPPORTS_MIPS16
606 select SERIAL_8250_CONSOLE
607 select USB_EHCI_BIG_ENDIAN_MMIO
608 select USB_EHCI_BIG_ENDIAN_DESC
610 This adds support for the PMC-Sierra family of Multi-Service
611 Processor System-On-A-Chips. These parts include a number
612 of integrated peripherals, interfaces and DSPs in addition to
613 a variety of MIPS cores.
616 bool "Ralink based machines"
620 select DMA_NONCOHERENT
623 select SYS_HAS_CPU_MIPS32_R1
624 select SYS_HAS_CPU_MIPS32_R2
625 select SYS_SUPPORTS_32BIT_KERNEL
626 select SYS_SUPPORTS_LITTLE_ENDIAN
627 select SYS_SUPPORTS_MIPS16
628 select SYS_HAS_EARLY_PRINTK
630 select ARCH_HAS_RESET_CONTROLLER
631 select RESET_CONTROLLER
634 bool "SGI IP22 (Indy/Indigo2)"
637 select ARCH_MIGHT_HAVE_PC_SERIO
641 select DEFAULT_SGI_PARTITION
642 select DMA_NONCOHERENT
646 select IP22_CPU_SCACHE
648 select GENERIC_ISA_DMA_SUPPORT_BROKEN
650 select SGI_HAS_INDYDOG
656 select SYS_HAS_CPU_R4X00
657 select SYS_HAS_CPU_R5000
659 # Disable EARLY_PRINTK for now since it leads to overwritten prom
660 # memory during early boot on some machines.
662 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
663 # for a more details discussion
665 # select SYS_HAS_EARLY_PRINTK
666 select SYS_SUPPORTS_32BIT_KERNEL
667 select SYS_SUPPORTS_64BIT_KERNEL
668 select SYS_SUPPORTS_BIG_ENDIAN
669 select MIPS_L1_CACHE_SHIFT_7
671 This are the SGI Indy, Challenge S and Indigo2, as well as certain
672 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
673 that runs on these, say Y here.
676 bool "SGI IP27 (Origin200/2000)"
677 select ARCH_HAS_PHYS_TO_DMA
681 select DEFAULT_SGI_PARTITION
682 select SYS_HAS_EARLY_PRINTK
685 select IRQ_DOMAIN_HIERARCHY
686 select NR_CPUS_DEFAULT_64
687 select PCI_DRIVERS_GENERIC
688 select PCI_XTALK_BRIDGE
689 select SYS_HAS_CPU_R10000
690 select SYS_SUPPORTS_64BIT_KERNEL
691 select SYS_SUPPORTS_BIG_ENDIAN
692 select SYS_SUPPORTS_NUMA
693 select SYS_SUPPORTS_SMP
694 select MIPS_L1_CACHE_SHIFT_7
696 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
697 workstations. To compile a Linux kernel that runs on these, say Y
701 bool "SGI IP28 (Indigo2 R10k)"
704 select ARCH_MIGHT_HAVE_PC_SERIO
708 select DEFAULT_SGI_PARTITION
709 select DMA_NONCOHERENT
710 select GENERIC_ISA_DMA_SUPPORT_BROKEN
716 select SGI_HAS_INDYDOG
722 select SYS_HAS_CPU_R10000
724 # Disable EARLY_PRINTK for now since it leads to overwritten prom
725 # memory during early boot on some machines.
727 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
728 # for a more details discussion
730 # select SYS_HAS_EARLY_PRINTK
731 select SYS_SUPPORTS_64BIT_KERNEL
732 select SYS_SUPPORTS_BIG_ENDIAN
733 select MIPS_L1_CACHE_SHIFT_7
735 This is the SGI Indigo2 with R10000 processor. To compile a Linux
736 kernel that runs on these, say Y here.
740 select ARCH_HAS_PHYS_TO_DMA
746 select DMA_NONCOHERENT
749 select R5000_CPU_SCACHE
750 select RM7000_CPU_SCACHE
751 select SYS_HAS_CPU_R5000
752 select SYS_HAS_CPU_R10000 if BROKEN
753 select SYS_HAS_CPU_RM7000
754 select SYS_HAS_CPU_NEVADA
755 select SYS_SUPPORTS_64BIT_KERNEL
756 select SYS_SUPPORTS_BIG_ENDIAN
758 If you want this kernel to run on SGI O2 workstation, say Y here.
761 bool "Sibyte BCM91120C-CRhine"
763 select SIBYTE_BCM1120
765 select SYS_HAS_CPU_SB1
766 select SYS_SUPPORTS_BIG_ENDIAN
767 select SYS_SUPPORTS_LITTLE_ENDIAN
770 bool "Sibyte BCM91120x-Carmel"
772 select SIBYTE_BCM1120
774 select SYS_HAS_CPU_SB1
775 select SYS_SUPPORTS_BIG_ENDIAN
776 select SYS_SUPPORTS_LITTLE_ENDIAN
779 bool "Sibyte BCM91125C-CRhone"
781 select SIBYTE_BCM1125
783 select SYS_HAS_CPU_SB1
784 select SYS_SUPPORTS_BIG_ENDIAN
785 select SYS_SUPPORTS_HIGHMEM
786 select SYS_SUPPORTS_LITTLE_ENDIAN
789 bool "Sibyte BCM91125E-Rhone"
791 select SIBYTE_BCM1125H
793 select SYS_HAS_CPU_SB1
794 select SYS_SUPPORTS_BIG_ENDIAN
795 select SYS_SUPPORTS_LITTLE_ENDIAN
798 bool "Sibyte BCM91250A-SWARM"
800 select HAVE_PATA_PLATFORM
803 select SYS_HAS_CPU_SB1
804 select SYS_SUPPORTS_BIG_ENDIAN
805 select SYS_SUPPORTS_HIGHMEM
806 select SYS_SUPPORTS_LITTLE_ENDIAN
807 select ZONE_DMA32 if 64BIT
808 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
810 config SIBYTE_LITTLESUR
811 bool "Sibyte BCM91250C2-LittleSur"
813 select HAVE_PATA_PLATFORM
816 select SYS_HAS_CPU_SB1
817 select SYS_SUPPORTS_BIG_ENDIAN
818 select SYS_SUPPORTS_HIGHMEM
819 select SYS_SUPPORTS_LITTLE_ENDIAN
820 select ZONE_DMA32 if 64BIT
822 config SIBYTE_SENTOSA
823 bool "Sibyte BCM91250E-Sentosa"
827 select SYS_HAS_CPU_SB1
828 select SYS_SUPPORTS_BIG_ENDIAN
829 select SYS_SUPPORTS_LITTLE_ENDIAN
830 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
833 bool "Sibyte BCM91480B-BigSur"
835 select NR_CPUS_DEFAULT_4
836 select SIBYTE_BCM1x80
838 select SYS_HAS_CPU_SB1
839 select SYS_SUPPORTS_BIG_ENDIAN
840 select SYS_SUPPORTS_HIGHMEM
841 select SYS_SUPPORTS_LITTLE_ENDIAN
842 select ZONE_DMA32 if 64BIT
843 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
846 bool "SNI RM200/300/400"
847 select FW_ARC if CPU_LITTLE_ENDIAN
848 select FW_ARC32 if CPU_LITTLE_ENDIAN
849 select FW_SNIPROM if CPU_BIG_ENDIAN
850 select ARCH_MAY_HAVE_PC_FDC
851 select ARCH_MIGHT_HAVE_PC_PARPORT
852 select ARCH_MIGHT_HAVE_PC_SERIO
856 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
857 select DMA_NONCOHERENT
858 select GENERIC_ISA_DMA
860 select HAVE_PCSPKR_PLATFORM
866 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
867 select SYS_HAS_CPU_R4X00
868 select SYS_HAS_CPU_R5000
869 select SYS_HAS_CPU_R10000
870 select R5000_CPU_SCACHE
871 select SYS_HAS_EARLY_PRINTK
872 select SYS_SUPPORTS_32BIT_KERNEL
873 select SYS_SUPPORTS_64BIT_KERNEL
874 select SYS_SUPPORTS_BIG_ENDIAN
875 select SYS_SUPPORTS_HIGHMEM
876 select SYS_SUPPORTS_LITTLE_ENDIAN
878 The SNI RM200/300/400 are MIPS-based machines manufactured by
879 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
880 Technology and now in turn merged with Fujitsu. Say Y here to
881 support this machine type.
884 bool "Toshiba TX39 series based machines"
887 bool "Toshiba TX49 series based machines"
889 config MIKROTIK_RB532
890 bool "Mikrotik RB532 boards"
893 select DMA_NONCOHERENT
896 select SYS_HAS_CPU_MIPS32_R1
897 select SYS_SUPPORTS_32BIT_KERNEL
898 select SYS_SUPPORTS_LITTLE_ENDIAN
902 select MIPS_L1_CACHE_SHIFT_4
904 Support the Mikrotik(tm) RouterBoard 532 series,
905 based on the IDT RC32434 SoC.
907 config CAVIUM_OCTEON_SOC
908 bool "Cavium Networks Octeon SoC based boards"
910 select ARCH_HAS_PHYS_TO_DMA
912 select PHYS_ADDR_T_64BIT
913 select SYS_SUPPORTS_64BIT_KERNEL
914 select SYS_SUPPORTS_BIG_ENDIAN
916 select EDAC_ATOMIC_SCRUB
917 select SYS_SUPPORTS_LITTLE_ENDIAN
918 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
919 select SYS_HAS_EARLY_PRINTK
920 select SYS_HAS_CPU_CAVIUM_OCTEON
927 select ARCH_SPARSEMEM_ENABLE
928 select SYS_SUPPORTS_SMP
929 select NR_CPUS_DEFAULT_64
930 select MIPS_NR_CPU_NR_MAP_1024
932 select MTD_COMPLEX_MAPPINGS
934 select SYS_SUPPORTS_RELOCATABLE
936 This option supports all of the Octeon reference boards from Cavium
937 Networks. It builds a kernel that dynamically determines the Octeon
938 CPU type and supports all known board reference implementations.
939 Some of the supported boards are:
946 Say Y here for most Octeon reference boards.
949 bool "Netlogic XLR/XLS based systems"
952 select SYS_HAS_CPU_XLR
953 select SYS_SUPPORTS_SMP
956 select SYS_SUPPORTS_32BIT_KERNEL
957 select SYS_SUPPORTS_64BIT_KERNEL
958 select PHYS_ADDR_T_64BIT
959 select SYS_SUPPORTS_BIG_ENDIAN
960 select SYS_SUPPORTS_HIGHMEM
961 select NR_CPUS_DEFAULT_32
965 select ZONE_DMA32 if 64BIT
967 select SYS_HAS_EARLY_PRINTK
968 select SYS_SUPPORTS_ZBOOT
969 select SYS_SUPPORTS_ZBOOT_UART16550
971 Support for systems based on Netlogic XLR and XLS processors.
972 Say Y here if you have a XLR or XLS based board.
975 bool "Netlogic XLP based systems"
978 select SYS_HAS_CPU_XLP
979 select SYS_SUPPORTS_SMP
981 select SYS_SUPPORTS_32BIT_KERNEL
982 select SYS_SUPPORTS_64BIT_KERNEL
983 select PHYS_ADDR_T_64BIT
985 select SYS_SUPPORTS_BIG_ENDIAN
986 select SYS_SUPPORTS_LITTLE_ENDIAN
987 select SYS_SUPPORTS_HIGHMEM
988 select NR_CPUS_DEFAULT_32
992 select ZONE_DMA32 if 64BIT
994 select SYS_HAS_EARLY_PRINTK
996 select SYS_SUPPORTS_ZBOOT
997 select SYS_SUPPORTS_ZBOOT_UART16550
999 This board is based on Netlogic XLP Processor.
1000 Say Y here if you have a XLP based board.
1002 config MIPS_PARAVIRT
1003 bool "Para-Virtualized guest system"
1006 select SYS_SUPPORTS_64BIT_KERNEL
1007 select SYS_SUPPORTS_32BIT_KERNEL
1008 select SYS_SUPPORTS_BIG_ENDIAN
1009 select SYS_SUPPORTS_SMP
1010 select NR_CPUS_DEFAULT_4
1011 select SYS_HAS_EARLY_PRINTK
1012 select SYS_HAS_CPU_MIPS32_R2
1013 select SYS_HAS_CPU_MIPS64_R2
1014 select SYS_HAS_CPU_CAVIUM_OCTEON
1016 select SWAP_IO_SPACE
1018 This option supports guest running under ????
1022 source "arch/mips/alchemy/Kconfig"
1023 source "arch/mips/ath25/Kconfig"
1024 source "arch/mips/ath79/Kconfig"
1025 source "arch/mips/bcm47xx/Kconfig"
1026 source "arch/mips/bcm63xx/Kconfig"
1027 source "arch/mips/bmips/Kconfig"
1028 source "arch/mips/generic/Kconfig"
1029 source "arch/mips/jazz/Kconfig"
1030 source "arch/mips/jz4740/Kconfig"
1031 source "arch/mips/lantiq/Kconfig"
1032 source "arch/mips/lasat/Kconfig"
1033 source "arch/mips/pic32/Kconfig"
1034 source "arch/mips/pistachio/Kconfig"
1035 source "arch/mips/pmcs-msp71xx/Kconfig"
1036 source "arch/mips/ralink/Kconfig"
1037 source "arch/mips/sgi-ip27/Kconfig"
1038 source "arch/mips/sibyte/Kconfig"
1039 source "arch/mips/txx9/Kconfig"
1040 source "arch/mips/vr41xx/Kconfig"
1041 source "arch/mips/cavium-octeon/Kconfig"
1042 source "arch/mips/loongson32/Kconfig"
1043 source "arch/mips/loongson64/Kconfig"
1044 source "arch/mips/netlogic/Kconfig"
1045 source "arch/mips/paravirt/Kconfig"
1049 config GENERIC_HWEIGHT
1053 config GENERIC_CALIBRATE_DELAY
1057 config SCHED_OMIT_FRAME_POINTER
1062 # Select some configuration options automatically based on user selections.
1067 config ARCH_MAY_HAVE_PC_FDC
1103 config MIPS_CLOCK_VSYSCALL
1104 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1113 config ARCH_SUPPORTS_UPROBES
1116 config DMA_MAYBE_COHERENT
1117 select ARCH_HAS_DMA_COHERENCE_H
1118 select DMA_NONCOHERENT
1121 config DMA_PERDEV_COHERENT
1123 select ARCH_HAS_SETUP_DMA_OPS
1124 select DMA_NONCOHERENT
1126 config DMA_NONCOHERENT
1129 # MIPS allows mixing "slightly different" Cacheability and Coherency
1130 # Attribute bits. It is believed that the uncached access through
1131 # KSEG1 and the implementation specific "uncached accelerated" used
1132 # by pgprot_writcombine can be mixed, and the latter sometimes provides
1133 # significant advantages.
1135 select ARCH_HAS_DMA_WRITE_COMBINE
1136 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1137 select ARCH_HAS_UNCACHED_SEGMENT
1138 select NEED_DMA_MAP_STATE
1139 select ARCH_HAS_DMA_COHERENT_TO_PFN
1140 select DMA_NONCOHERENT_CACHE_SYNC
1142 config SYS_HAS_EARLY_PRINTK
1145 config SYS_SUPPORTS_HOTPLUG_CPU
1148 config MIPS_BONITO64
1163 config NO_IOPORT_MAP
1168 default y if !CPU_HAS_LOAD_STORE_LR
1170 config GENERIC_ISA_DMA
1172 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1175 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1177 select GENERIC_ISA_DMA
1182 config HOLES_IN_ZONE
1185 config SYS_SUPPORTS_RELOCATABLE
1188 Selected if the platform supports relocating the kernel.
1189 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1190 to allow access to command line and entropy sources.
1192 config MIPS_CBPF_JIT
1194 depends on BPF_JIT && HAVE_CBPF_JIT
1196 config MIPS_EBPF_JIT
1198 depends on BPF_JIT && HAVE_EBPF_JIT
1202 # Endianness selection. Sufficiently obscure so many users don't know what to
1203 # answer,so we try hard to limit the available choices. Also the use of a
1204 # choice statement should be more obvious to the user.
1207 prompt "Endianness selection"
1209 Some MIPS machines can be configured for either little or big endian
1210 byte order. These modes require different kernels and a different
1211 Linux distribution. In general there is one preferred byteorder for a
1212 particular system but some systems are just as commonly used in the
1213 one or the other endianness.
1215 config CPU_BIG_ENDIAN
1217 depends on SYS_SUPPORTS_BIG_ENDIAN
1219 config CPU_LITTLE_ENDIAN
1220 bool "Little endian"
1221 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1228 config SYS_SUPPORTS_APM_EMULATION
1231 config SYS_SUPPORTS_BIG_ENDIAN
1234 config SYS_SUPPORTS_LITTLE_ENDIAN
1237 config SYS_SUPPORTS_HUGETLBFS
1239 depends on CPU_SUPPORTS_HUGEPAGES
1242 config MIPS_HUGE_TLB_SUPPORT
1243 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1260 config PCI_GT64XXX_PCI0
1263 config PCI_XTALK_BRIDGE
1266 config NO_EXCEPT_FILL
1273 select DMA_NONCOHERENT
1275 select SWAP_IO_SPACE
1276 select SYS_HAS_CPU_R5500
1277 select SYS_SUPPORTS_32BIT_KERNEL
1278 select SYS_SUPPORTS_64BIT_KERNEL
1279 select SYS_SUPPORTS_BIG_ENDIAN
1286 select DMA_NONCOHERENT
1287 select SYS_HAS_CPU_MIPS32_R2
1288 select SYS_SUPPORTS_32BIT_KERNEL
1289 select SYS_SUPPORTS_LITTLE_ENDIAN
1290 select SYS_SUPPORTS_BIG_ENDIAN
1291 select SYS_SUPPORTS_MIPS16
1292 select CPU_MIPSR2_IRQ_VI
1301 config SWAP_IO_SPACE
1304 config SGI_HAS_INDYDOG
1316 config SGI_HAS_ZILOG
1319 config SGI_HAS_I8042
1322 config DEFAULT_SGI_PARTITION
1334 config MIPS_L1_CACHE_SHIFT_4
1337 config MIPS_L1_CACHE_SHIFT_5
1340 config MIPS_L1_CACHE_SHIFT_6
1343 config MIPS_L1_CACHE_SHIFT_7
1346 config MIPS_L1_CACHE_SHIFT
1348 default "7" if MIPS_L1_CACHE_SHIFT_7
1349 default "6" if MIPS_L1_CACHE_SHIFT_6
1350 default "5" if MIPS_L1_CACHE_SHIFT_5
1351 default "4" if MIPS_L1_CACHE_SHIFT_4
1354 config HAVE_STD_PC_SERIAL_PORT
1358 bool "ARC console support"
1359 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1363 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1368 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1377 menu "CPU selection"
1383 config CPU_LOONGSON3
1384 bool "Loongson 3 CPU"
1385 depends on SYS_HAS_CPU_LOONGSON3
1386 select ARCH_HAS_PHYS_TO_DMA
1387 select CPU_SUPPORTS_64BIT_KERNEL
1388 select CPU_SUPPORTS_HIGHMEM
1389 select CPU_SUPPORTS_HUGEPAGES
1390 select CPU_HAS_LOAD_STORE_LR
1391 select WEAK_ORDERING
1392 select WEAK_REORDERING_BEYOND_LLSC
1393 select MIPS_PGD_C0_CONTEXT
1394 select MIPS_L1_CACHE_SHIFT_6
1398 The Loongson 3 processor implements the MIPS64R2 instruction
1399 set with many extensions.
1401 config LOONGSON3_ENHANCEMENT
1402 bool "New Loongson 3 CPU Enhancements"
1405 select CPU_HAS_PREFETCH
1406 depends on CPU_LOONGSON3
1408 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1409 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1410 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1411 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1412 Fast TLB refill support, etc.
1414 This option enable those enhancements which are not probed at run
1415 time. If you want a generic kernel to run on all Loongson 3 machines,
1416 please say 'N' here. If you want a high-performance kernel to run on
1417 new Loongson 3 machines only, please say 'Y' here.
1419 config CPU_LOONGSON3_WORKAROUNDS
1420 bool "Old Loongson 3 LLSC Workarounds"
1422 depends on CPU_LOONGSON3
1424 Loongson 3 processors have the llsc issues which require workarounds.
1425 Without workarounds the system may hang unexpectedly.
1427 Newer Loongson 3 will fix these issues and no workarounds are needed.
1428 The workarounds have no significant side effect on them but may
1429 decrease the performance of the system so this option should be
1430 disabled unless the kernel is intended to be run on old systems.
1432 If unsure, please say Y.
1434 config CPU_LOONGSON2E
1436 depends on SYS_HAS_CPU_LOONGSON2E
1437 select CPU_LOONGSON2
1439 The Loongson 2E processor implements the MIPS III instruction set
1440 with many extensions.
1442 It has an internal FPGA northbridge, which is compatible to
1445 config CPU_LOONGSON2F
1447 depends on SYS_HAS_CPU_LOONGSON2F
1448 select CPU_LOONGSON2
1451 The Loongson 2F processor implements the MIPS III instruction set
1452 with many extensions.
1454 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1455 have a similar programming interface with FPGA northbridge used in
1458 config CPU_LOONGSON1B
1460 depends on SYS_HAS_CPU_LOONGSON1B
1461 select CPU_LOONGSON1
1462 select LEDS_GPIO_REGISTER
1464 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1465 Release 1 instruction set and part of the MIPS32 Release 2
1468 config CPU_LOONGSON1C
1470 depends on SYS_HAS_CPU_LOONGSON1C
1471 select CPU_LOONGSON1
1472 select LEDS_GPIO_REGISTER
1474 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1475 Release 1 instruction set and part of the MIPS32 Release 2
1478 config CPU_MIPS32_R1
1479 bool "MIPS32 Release 1"
1480 depends on SYS_HAS_CPU_MIPS32_R1
1481 select CPU_HAS_PREFETCH
1482 select CPU_HAS_LOAD_STORE_LR
1483 select CPU_SUPPORTS_32BIT_KERNEL
1484 select CPU_SUPPORTS_HIGHMEM
1486 Choose this option to build a kernel for release 1 or later of the
1487 MIPS32 architecture. Most modern embedded systems with a 32-bit
1488 MIPS processor are based on a MIPS32 processor. If you know the
1489 specific type of processor in your system, choose those that one
1490 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1491 Release 2 of the MIPS32 architecture is available since several
1492 years so chances are you even have a MIPS32 Release 2 processor
1493 in which case you should choose CPU_MIPS32_R2 instead for better
1496 config CPU_MIPS32_R2
1497 bool "MIPS32 Release 2"
1498 depends on SYS_HAS_CPU_MIPS32_R2
1499 select CPU_HAS_PREFETCH
1500 select CPU_HAS_LOAD_STORE_LR
1501 select CPU_SUPPORTS_32BIT_KERNEL
1502 select CPU_SUPPORTS_HIGHMEM
1503 select CPU_SUPPORTS_MSA
1506 Choose this option to build a kernel for release 2 or later of the
1507 MIPS32 architecture. Most modern embedded systems with a 32-bit
1508 MIPS processor are based on a MIPS32 processor. If you know the
1509 specific type of processor in your system, choose those that one
1510 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1512 config CPU_MIPS32_R6
1513 bool "MIPS32 Release 6"
1514 depends on SYS_HAS_CPU_MIPS32_R6
1515 select CPU_HAS_PREFETCH
1516 select CPU_SUPPORTS_32BIT_KERNEL
1517 select CPU_SUPPORTS_HIGHMEM
1518 select CPU_SUPPORTS_MSA
1520 select MIPS_O32_FP64_SUPPORT
1522 Choose this option to build a kernel for release 6 or later of the
1523 MIPS32 architecture. New MIPS processors, starting with the Warrior
1524 family, are based on a MIPS32r6 processor. If you own an older
1525 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1527 config CPU_MIPS64_R1
1528 bool "MIPS64 Release 1"
1529 depends on SYS_HAS_CPU_MIPS64_R1
1530 select CPU_HAS_PREFETCH
1531 select CPU_HAS_LOAD_STORE_LR
1532 select CPU_SUPPORTS_32BIT_KERNEL
1533 select CPU_SUPPORTS_64BIT_KERNEL
1534 select CPU_SUPPORTS_HIGHMEM
1535 select CPU_SUPPORTS_HUGEPAGES
1537 Choose this option to build a kernel for release 1 or later of the
1538 MIPS64 architecture. Many modern embedded systems with a 64-bit
1539 MIPS processor are based on a MIPS64 processor. If you know the
1540 specific type of processor in your system, choose those that one
1541 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1542 Release 2 of the MIPS64 architecture is available since several
1543 years so chances are you even have a MIPS64 Release 2 processor
1544 in which case you should choose CPU_MIPS64_R2 instead for better
1547 config CPU_MIPS64_R2
1548 bool "MIPS64 Release 2"
1549 depends on SYS_HAS_CPU_MIPS64_R2
1550 select CPU_HAS_PREFETCH
1551 select CPU_HAS_LOAD_STORE_LR
1552 select CPU_SUPPORTS_32BIT_KERNEL
1553 select CPU_SUPPORTS_64BIT_KERNEL
1554 select CPU_SUPPORTS_HIGHMEM
1555 select CPU_SUPPORTS_HUGEPAGES
1556 select CPU_SUPPORTS_MSA
1559 Choose this option to build a kernel for release 2 or later of the
1560 MIPS64 architecture. Many modern embedded systems with a 64-bit
1561 MIPS processor are based on a MIPS64 processor. If you know the
1562 specific type of processor in your system, choose those that one
1563 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1565 config CPU_MIPS64_R6
1566 bool "MIPS64 Release 6"
1567 depends on SYS_HAS_CPU_MIPS64_R6
1568 select CPU_HAS_PREFETCH
1569 select CPU_SUPPORTS_32BIT_KERNEL
1570 select CPU_SUPPORTS_64BIT_KERNEL
1571 select CPU_SUPPORTS_HIGHMEM
1572 select CPU_SUPPORTS_HUGEPAGES
1573 select CPU_SUPPORTS_MSA
1574 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1577 Choose this option to build a kernel for release 6 or later of the
1578 MIPS64 architecture. New MIPS processors, starting with the Warrior
1579 family, are based on a MIPS64r6 processor. If you own an older
1580 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1584 depends on SYS_HAS_CPU_R3000
1586 select CPU_HAS_LOAD_STORE_LR
1588 select CPU_SUPPORTS_32BIT_KERNEL
1589 select CPU_SUPPORTS_HIGHMEM
1591 Please make sure to pick the right CPU type. Linux/MIPS is not
1592 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1593 *not* work on R4000 machines and vice versa. However, since most
1594 of the supported machines have an R4000 (or similar) CPU, R4x00
1595 might be a safe bet. If the resulting kernel does not work,
1596 try to recompile with R3000.
1600 depends on SYS_HAS_CPU_TX39XX
1601 select CPU_SUPPORTS_32BIT_KERNEL
1602 select CPU_HAS_LOAD_STORE_LR
1607 depends on SYS_HAS_CPU_VR41XX
1608 select CPU_SUPPORTS_32BIT_KERNEL
1609 select CPU_SUPPORTS_64BIT_KERNEL
1610 select CPU_HAS_LOAD_STORE_LR
1612 The options selects support for the NEC VR4100 series of processors.
1613 Only choose this option if you have one of these processors as a
1614 kernel built with this option will not run on any other type of
1615 processor or vice versa.
1619 depends on SYS_HAS_CPU_R4X00
1620 select CPU_SUPPORTS_32BIT_KERNEL
1621 select CPU_SUPPORTS_64BIT_KERNEL
1622 select CPU_SUPPORTS_HUGEPAGES
1623 select CPU_HAS_LOAD_STORE_LR
1625 MIPS Technologies R4000-series processors other than 4300, including
1626 the R4000, R4400, R4600, and 4700.
1630 depends on SYS_HAS_CPU_TX49XX
1631 select CPU_HAS_PREFETCH
1632 select CPU_HAS_LOAD_STORE_LR
1633 select CPU_SUPPORTS_32BIT_KERNEL
1634 select CPU_SUPPORTS_64BIT_KERNEL
1635 select CPU_SUPPORTS_HUGEPAGES
1639 depends on SYS_HAS_CPU_R5000
1640 select CPU_SUPPORTS_32BIT_KERNEL
1641 select CPU_SUPPORTS_64BIT_KERNEL
1642 select CPU_SUPPORTS_HUGEPAGES
1643 select CPU_HAS_LOAD_STORE_LR
1645 MIPS Technologies R5000-series processors other than the Nevada.
1649 depends on SYS_HAS_CPU_R5500
1650 select CPU_SUPPORTS_32BIT_KERNEL
1651 select CPU_SUPPORTS_64BIT_KERNEL
1652 select CPU_SUPPORTS_HUGEPAGES
1653 select CPU_HAS_LOAD_STORE_LR
1655 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1660 depends on SYS_HAS_CPU_NEVADA
1661 select CPU_SUPPORTS_32BIT_KERNEL
1662 select CPU_SUPPORTS_64BIT_KERNEL
1663 select CPU_SUPPORTS_HUGEPAGES
1664 select CPU_HAS_LOAD_STORE_LR
1666 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1670 depends on SYS_HAS_CPU_R10000
1671 select CPU_HAS_PREFETCH
1672 select CPU_HAS_LOAD_STORE_LR
1673 select CPU_SUPPORTS_32BIT_KERNEL
1674 select CPU_SUPPORTS_64BIT_KERNEL
1675 select CPU_SUPPORTS_HIGHMEM
1676 select CPU_SUPPORTS_HUGEPAGES
1678 MIPS Technologies R10000-series processors.
1682 depends on SYS_HAS_CPU_RM7000
1683 select CPU_HAS_PREFETCH
1684 select CPU_HAS_LOAD_STORE_LR
1685 select CPU_SUPPORTS_32BIT_KERNEL
1686 select CPU_SUPPORTS_64BIT_KERNEL
1687 select CPU_SUPPORTS_HIGHMEM
1688 select CPU_SUPPORTS_HUGEPAGES
1692 depends on SYS_HAS_CPU_SB1
1693 select CPU_HAS_LOAD_STORE_LR
1694 select CPU_SUPPORTS_32BIT_KERNEL
1695 select CPU_SUPPORTS_64BIT_KERNEL
1696 select CPU_SUPPORTS_HIGHMEM
1697 select CPU_SUPPORTS_HUGEPAGES
1698 select WEAK_ORDERING
1700 config CPU_CAVIUM_OCTEON
1701 bool "Cavium Octeon processor"
1702 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1703 select CPU_HAS_PREFETCH
1704 select CPU_HAS_LOAD_STORE_LR
1705 select CPU_SUPPORTS_64BIT_KERNEL
1706 select WEAK_ORDERING
1707 select CPU_SUPPORTS_HIGHMEM
1708 select CPU_SUPPORTS_HUGEPAGES
1709 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1710 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1711 select MIPS_L1_CACHE_SHIFT_7
1714 The Cavium Octeon processor is a highly integrated chip containing
1715 many ethernet hardware widgets for networking tasks. The processor
1716 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1717 Full details can be found at http://www.caviumnetworks.com.
1720 bool "Broadcom BMIPS"
1721 depends on SYS_HAS_CPU_BMIPS
1723 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1724 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1725 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1726 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1727 select CPU_SUPPORTS_32BIT_KERNEL
1728 select DMA_NONCOHERENT
1730 select SWAP_IO_SPACE
1731 select WEAK_ORDERING
1732 select CPU_SUPPORTS_HIGHMEM
1733 select CPU_HAS_PREFETCH
1734 select CPU_HAS_LOAD_STORE_LR
1735 select CPU_SUPPORTS_CPUFREQ
1736 select MIPS_EXTERNAL_TIMER
1738 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1741 bool "Netlogic XLR SoC"
1742 depends on SYS_HAS_CPU_XLR
1743 select CPU_HAS_LOAD_STORE_LR
1744 select CPU_SUPPORTS_32BIT_KERNEL
1745 select CPU_SUPPORTS_64BIT_KERNEL
1746 select CPU_SUPPORTS_HIGHMEM
1747 select CPU_SUPPORTS_HUGEPAGES
1748 select WEAK_ORDERING
1749 select WEAK_REORDERING_BEYOND_LLSC
1751 Netlogic Microsystems XLR/XLS processors.
1754 bool "Netlogic XLP SoC"
1755 depends on SYS_HAS_CPU_XLP
1756 select CPU_SUPPORTS_32BIT_KERNEL
1757 select CPU_SUPPORTS_64BIT_KERNEL
1758 select CPU_SUPPORTS_HIGHMEM
1759 select WEAK_ORDERING
1760 select WEAK_REORDERING_BEYOND_LLSC
1761 select CPU_HAS_PREFETCH
1762 select CPU_HAS_LOAD_STORE_LR
1764 select CPU_SUPPORTS_HUGEPAGES
1765 select MIPS_ASID_BITS_VARIABLE
1767 Netlogic Microsystems XLP processors.
1770 config CPU_MIPS32_3_5_FEATURES
1771 bool "MIPS32 Release 3.5 Features"
1772 depends on SYS_HAS_CPU_MIPS32_R3_5
1773 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1775 Choose this option to build a kernel for release 2 or later of the
1776 MIPS32 architecture including features from the 3.5 release such as
1777 support for Enhanced Virtual Addressing (EVA).
1779 config CPU_MIPS32_3_5_EVA
1780 bool "Enhanced Virtual Addressing (EVA)"
1781 depends on CPU_MIPS32_3_5_FEATURES
1785 Choose this option if you want to enable the Enhanced Virtual
1786 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1787 One of its primary benefits is an increase in the maximum size
1788 of lowmem (up to 3GB). If unsure, say 'N' here.
1790 config CPU_MIPS32_R5_FEATURES
1791 bool "MIPS32 Release 5 Features"
1792 depends on SYS_HAS_CPU_MIPS32_R5
1793 depends on CPU_MIPS32_R2
1795 Choose this option to build a kernel for release 2 or later of the
1796 MIPS32 architecture including features from release 5 such as
1797 support for Extended Physical Addressing (XPA).
1799 config CPU_MIPS32_R5_XPA
1800 bool "Extended Physical Addressing (XPA)"
1801 depends on CPU_MIPS32_R5_FEATURES
1803 depends on !PAGE_SIZE_4KB
1804 depends on SYS_SUPPORTS_HIGHMEM
1807 select PHYS_ADDR_T_64BIT
1810 Choose this option if you want to enable the Extended Physical
1811 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1812 benefit is to increase physical addressing equal to or greater
1813 than 40 bits. Note that this has the side effect of turning on
1814 64-bit addressing which in turn makes the PTEs 64-bit in size.
1815 If unsure, say 'N' here.
1818 config CPU_NOP_WORKAROUNDS
1821 config CPU_JUMP_WORKAROUNDS
1824 config CPU_LOONGSON2F_WORKAROUNDS
1825 bool "Loongson 2F Workarounds"
1827 select CPU_NOP_WORKAROUNDS
1828 select CPU_JUMP_WORKAROUNDS
1830 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1831 require workarounds. Without workarounds the system may hang
1832 unexpectedly. For more information please refer to the gas
1833 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1835 Loongson 2F03 and later have fixed these issues and no workarounds
1836 are needed. The workarounds have no significant side effect on them
1837 but may decrease the performance of the system so this option should
1838 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1841 If unsure, please say Y.
1842 endif # CPU_LOONGSON2F
1844 config SYS_SUPPORTS_ZBOOT
1846 select HAVE_KERNEL_GZIP
1847 select HAVE_KERNEL_BZIP2
1848 select HAVE_KERNEL_LZ4
1849 select HAVE_KERNEL_LZMA
1850 select HAVE_KERNEL_LZO
1851 select HAVE_KERNEL_XZ
1853 config SYS_SUPPORTS_ZBOOT_UART16550
1855 select SYS_SUPPORTS_ZBOOT
1857 config SYS_SUPPORTS_ZBOOT_UART_PROM
1859 select SYS_SUPPORTS_ZBOOT
1861 config CPU_LOONGSON2
1863 select CPU_SUPPORTS_32BIT_KERNEL
1864 select CPU_SUPPORTS_64BIT_KERNEL
1865 select CPU_SUPPORTS_HIGHMEM
1866 select CPU_SUPPORTS_HUGEPAGES
1867 select ARCH_HAS_PHYS_TO_DMA
1868 select CPU_HAS_LOAD_STORE_LR
1870 config CPU_LOONGSON1
1874 select CPU_HAS_PREFETCH
1875 select CPU_HAS_LOAD_STORE_LR
1876 select CPU_SUPPORTS_32BIT_KERNEL
1877 select CPU_SUPPORTS_HIGHMEM
1878 select CPU_SUPPORTS_CPUFREQ
1880 config CPU_BMIPS32_3300
1881 select SMP_UP if SMP
1884 config CPU_BMIPS4350
1886 select SYS_SUPPORTS_SMP
1887 select SYS_SUPPORTS_HOTPLUG_CPU
1889 config CPU_BMIPS4380
1891 select MIPS_L1_CACHE_SHIFT_6
1892 select SYS_SUPPORTS_SMP
1893 select SYS_SUPPORTS_HOTPLUG_CPU
1896 config CPU_BMIPS5000
1898 select MIPS_CPU_SCACHE
1899 select MIPS_L1_CACHE_SHIFT_7
1900 select SYS_SUPPORTS_SMP
1901 select SYS_SUPPORTS_HOTPLUG_CPU
1904 config SYS_HAS_CPU_LOONGSON3
1906 select CPU_SUPPORTS_CPUFREQ
1909 config SYS_HAS_CPU_LOONGSON2E
1912 config SYS_HAS_CPU_LOONGSON2F
1914 select CPU_SUPPORTS_CPUFREQ
1915 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1916 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1918 config SYS_HAS_CPU_LOONGSON1B
1921 config SYS_HAS_CPU_LOONGSON1C
1924 config SYS_HAS_CPU_MIPS32_R1
1927 config SYS_HAS_CPU_MIPS32_R2
1930 config SYS_HAS_CPU_MIPS32_R3_5
1933 config SYS_HAS_CPU_MIPS32_R5
1935 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1937 config SYS_HAS_CPU_MIPS32_R6
1939 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1941 config SYS_HAS_CPU_MIPS64_R1
1944 config SYS_HAS_CPU_MIPS64_R2
1947 config SYS_HAS_CPU_MIPS64_R6
1949 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1951 config SYS_HAS_CPU_R3000
1954 config SYS_HAS_CPU_TX39XX
1957 config SYS_HAS_CPU_VR41XX
1960 config SYS_HAS_CPU_R4X00
1963 config SYS_HAS_CPU_TX49XX
1966 config SYS_HAS_CPU_R5000
1969 config SYS_HAS_CPU_R5500
1972 config SYS_HAS_CPU_NEVADA
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_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 cnMIPS processors. Note that you will need a suitable Linux
2181 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_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
2299 depends on MIPS_FP_SUPPORT
2300 default y if !CPU_R2300_FPU
2302 config CPU_R4K_CACHE_TLB
2304 default y if !(CPU_R3K_TLB || CPU_SB1 || CPU_CAVIUM_OCTEON)
2307 bool "MIPS MT SMP support (1 TC on each available VPE)"
2309 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2310 select CPU_MIPSR2_IRQ_VI
2311 select CPU_MIPSR2_IRQ_EI
2316 select SYS_SUPPORTS_SMP
2317 select SYS_SUPPORTS_SCHED_SMT
2318 select MIPS_PERF_SHARED_TC_COUNTERS
2320 This is a kernel model which is known as SMVP. This is supported
2321 on cores with the MT ASE and uses the available VPEs to implement
2322 virtual processors which supports SMP. This is equivalent to the
2323 Intel Hyperthreading feature. For further information go to
2324 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2330 bool "SMT (multithreading) scheduler support"
2331 depends on SYS_SUPPORTS_SCHED_SMT
2334 SMT scheduler support improves the CPU scheduler's decision making
2335 when dealing with MIPS MT enabled cores at a cost of slightly
2336 increased overhead in some places. If unsure say N here.
2338 config SYS_SUPPORTS_SCHED_SMT
2341 config SYS_SUPPORTS_MULTITHREADING
2344 config MIPS_MT_FPAFF
2345 bool "Dynamic FPU affinity for FP-intensive threads"
2347 depends on MIPS_MT_SMP
2349 config MIPSR2_TO_R6_EMULATOR
2350 bool "MIPS R2-to-R6 emulator"
2351 depends on CPU_MIPSR6
2352 depends on MIPS_FP_SUPPORT
2355 Choose this option if you want to run non-R6 MIPS userland code.
2356 Even if you say 'Y' here, the emulator will still be disabled by
2357 default. You can enable it using the 'mipsr2emu' kernel option.
2358 The only reason this is a build-time option is to save ~14K from the
2361 config SYS_SUPPORTS_VPE_LOADER
2363 depends on SYS_SUPPORTS_MULTITHREADING
2365 Indicates that the platform supports the VPE loader, and provides
2368 config MIPS_VPE_LOADER
2369 bool "VPE loader support."
2370 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2371 select CPU_MIPSR2_IRQ_VI
2372 select CPU_MIPSR2_IRQ_EI
2375 Includes a loader for loading an elf relocatable object
2376 onto another VPE and running it.
2378 config MIPS_VPE_LOADER_CMP
2381 depends on MIPS_VPE_LOADER && MIPS_CMP
2383 config MIPS_VPE_LOADER_MT
2386 depends on MIPS_VPE_LOADER && !MIPS_CMP
2388 config MIPS_VPE_LOADER_TOM
2389 bool "Load VPE program into memory hidden from linux"
2390 depends on MIPS_VPE_LOADER
2393 The loader can use memory that is present but has been hidden from
2394 Linux using the kernel command line option "mem=xxMB". It's up to
2395 you to ensure the amount you put in the option and the space your
2396 program requires is less or equal to the amount physically present.
2398 config MIPS_VPE_APSP_API
2399 bool "Enable support for AP/SP API (RTLX)"
2400 depends on MIPS_VPE_LOADER
2402 config MIPS_VPE_APSP_API_CMP
2405 depends on MIPS_VPE_APSP_API && MIPS_CMP
2407 config MIPS_VPE_APSP_API_MT
2410 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2413 bool "MIPS CMP framework support (DEPRECATED)"
2414 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2417 select SYS_SUPPORTS_SMP
2418 select WEAK_ORDERING
2421 Select this if you are using a bootloader which implements the "CMP
2422 framework" protocol (ie. YAMON) and want your kernel to make use of
2423 its ability to start secondary CPUs.
2425 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2429 bool "MIPS Coherent Processing System support"
2430 depends on SYS_SUPPORTS_MIPS_CPS
2432 select MIPS_CPS_PM if HOTPLUG_CPU
2434 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2435 select SYS_SUPPORTS_HOTPLUG_CPU
2436 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2437 select SYS_SUPPORTS_SMP
2438 select WEAK_ORDERING
2440 Select this if you wish to run an SMP kernel across multiple cores
2441 within a MIPS Coherent Processing System. When this option is
2442 enabled the kernel will probe for other cores and boot them with
2443 no external assistance. It is safe to enable this when hardware
2444 support is unavailable.
2457 config SB1_PASS_2_WORKAROUNDS
2459 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2462 config SB1_PASS_2_1_WORKAROUNDS
2464 depends on CPU_SB1 && CPU_SB1_PASS_2
2468 prompt "SmartMIPS or microMIPS ASE support"
2470 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2473 Select this if you want neither microMIPS nor SmartMIPS support
2475 config CPU_HAS_SMARTMIPS
2476 depends on SYS_SUPPORTS_SMARTMIPS
2479 SmartMIPS is a extension of the MIPS32 architecture aimed at
2480 increased security at both hardware and software level for
2481 smartcards. Enabling this option will allow proper use of the
2482 SmartMIPS instructions by Linux applications. However a kernel with
2483 this option will not work on a MIPS core without SmartMIPS core. If
2484 you don't know you probably don't have SmartMIPS and should say N
2487 config CPU_MICROMIPS
2488 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2491 When this option is enabled the kernel will be built using the
2497 bool "Support for the MIPS SIMD Architecture"
2498 depends on CPU_SUPPORTS_MSA
2499 depends on MIPS_FP_SUPPORT
2500 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2502 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2503 and a set of SIMD instructions to operate on them. When this option
2504 is enabled the kernel will support allocating & switching MSA
2505 vector register contexts. If you know that your kernel will only be
2506 running on CPUs which do not support MSA or that your userland will
2507 not be making use of it then you may wish to say N here to reduce
2508 the size & complexity of your kernel.
2521 config CPU_HAS_LOAD_STORE_LR
2524 CPU has support for unaligned load and store instructions:
2525 LWL, LWR, SWL, SWR (Load/store word left/right).
2526 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit systems).
2529 # Vectored interrupt mode is an R2 feature
2531 config CPU_MIPSR2_IRQ_VI
2535 # Extended interrupt mode is an R2 feature
2537 config CPU_MIPSR2_IRQ_EI
2542 depends on !CPU_R3000
2548 config CPU_DADDI_WORKAROUNDS
2551 config CPU_R4000_WORKAROUNDS
2553 select CPU_R4400_WORKAROUNDS
2555 config CPU_R4400_WORKAROUNDS
2558 config MIPS_ASID_SHIFT
2560 default 6 if CPU_R3000 || CPU_TX39XX
2563 config MIPS_ASID_BITS
2565 default 0 if MIPS_ASID_BITS_VARIABLE
2566 default 6 if CPU_R3000 || CPU_TX39XX
2569 config MIPS_ASID_BITS_VARIABLE
2572 config MIPS_CRC_SUPPORT
2576 # - Highmem only makes sense for the 32-bit kernel.
2577 # - The current highmem code will only work properly on physically indexed
2578 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2579 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2580 # moment we protect the user and offer the highmem option only on machines
2581 # where it's known to be safe. This will not offer highmem on a few systems
2582 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2583 # indexed CPUs but we're playing safe.
2584 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2585 # know they might have memory configurations that could make use of highmem
2589 bool "High Memory Support"
2590 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2592 config CPU_SUPPORTS_HIGHMEM
2595 config SYS_SUPPORTS_HIGHMEM
2598 config SYS_SUPPORTS_SMARTMIPS
2601 config SYS_SUPPORTS_MICROMIPS
2604 config SYS_SUPPORTS_MIPS16
2607 This option must be set if a kernel might be executed on a MIPS16-
2608 enabled CPU even if MIPS16 is not actually being used. In other
2609 words, it makes the kernel MIPS16-tolerant.
2611 config CPU_SUPPORTS_MSA
2614 config ARCH_FLATMEM_ENABLE
2616 depends on !NUMA && !CPU_LOONGSON2
2618 config ARCH_DISCONTIGMEM_ENABLE
2620 default y if SGI_IP27
2622 Say Y to support efficient handling of discontiguous physical memory,
2623 for architectures which are either NUMA (Non-Uniform Memory Access)
2624 or have huge holes in the physical address space for other reasons.
2625 See <file:Documentation/vm/numa.rst> for more.
2627 config ARCH_SPARSEMEM_ENABLE
2629 select SPARSEMEM_STATIC
2633 depends on SYS_SUPPORTS_NUMA
2635 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2636 Access). This option improves performance on systems with more
2637 than two nodes; on two node systems it is generally better to
2638 leave it disabled; on single node systems disable this option
2641 config SYS_SUPPORTS_NUMA
2645 bool "Relocatable kernel"
2646 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2648 This builds a kernel image that retains relocation information
2649 so it can be loaded someplace besides the default 1MB.
2650 The relocations make the kernel binary about 15% larger,
2651 but are discarded at runtime
2653 config RELOCATION_TABLE_SIZE
2654 hex "Relocation table size"
2655 depends on RELOCATABLE
2656 range 0x0 0x01000000
2657 default "0x00100000"
2659 A table of relocation data will be appended to the kernel binary
2660 and parsed at boot to fix up the relocated kernel.
2662 This option allows the amount of space reserved for the table to be
2663 adjusted, although the default of 1Mb should be ok in most cases.
2665 The build will fail and a valid size suggested if this is too small.
2667 If unsure, leave at the default value.
2669 config RANDOMIZE_BASE
2670 bool "Randomize the address of the kernel image"
2671 depends on RELOCATABLE
2673 Randomizes the physical and virtual address at which the
2674 kernel image is loaded, as a security feature that
2675 deters exploit attempts relying on knowledge of the location
2676 of kernel internals.
2678 Entropy is generated using any coprocessor 0 registers available.
2680 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2684 config RANDOMIZE_BASE_MAX_OFFSET
2685 hex "Maximum kASLR offset" if EXPERT
2686 depends on RANDOMIZE_BASE
2687 range 0x0 0x40000000 if EVA || 64BIT
2688 range 0x0 0x08000000
2689 default "0x01000000"
2691 When kASLR is active, this provides the maximum offset that will
2692 be applied to the kernel image. It should be set according to the
2693 amount of physical RAM available in the target system minus
2694 PHYSICAL_START and must be a power of 2.
2696 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2697 EVA or 64-bit. The default is 16Mb.
2702 depends on NEED_MULTIPLE_NODES
2704 config HW_PERF_EVENTS
2705 bool "Enable hardware performance counter support for perf events"
2706 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2709 Enable hardware performance counter support for perf events. If
2710 disabled, perf events will use software events only.
2713 bool "Multi-Processing support"
2714 depends on SYS_SUPPORTS_SMP
2716 This enables support for systems with more than one CPU. If you have
2717 a system with only one CPU, say N. If you have a system with more
2718 than one CPU, say Y.
2720 If you say N here, the kernel will run on uni- and multiprocessor
2721 machines, but will use only one CPU of a multiprocessor machine. If
2722 you say Y here, the kernel will run on many, but not all,
2723 uniprocessor machines. On a uniprocessor machine, the kernel
2724 will run faster if you say N here.
2726 People using multiprocessor machines who say Y here should also say
2727 Y to "Enhanced Real Time Clock Support", below.
2729 See also the SMP-HOWTO available at
2730 <http://www.tldp.org/docs.html#howto>.
2732 If you don't know what to do here, say N.
2735 bool "Support for hot-pluggable CPUs"
2736 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2738 Say Y here to allow turning CPUs off and on. CPUs can be
2739 controlled through /sys/devices/system/cpu.
2740 (Note: power management support will enable this option
2741 automatically on SMP systems. )
2742 Say N if you want to disable CPU hotplug.
2747 config SYS_SUPPORTS_MIPS_CMP
2750 config SYS_SUPPORTS_MIPS_CPS
2753 config SYS_SUPPORTS_SMP
2756 config NR_CPUS_DEFAULT_4
2759 config NR_CPUS_DEFAULT_8
2762 config NR_CPUS_DEFAULT_16
2765 config NR_CPUS_DEFAULT_32
2768 config NR_CPUS_DEFAULT_64
2772 int "Maximum number of CPUs (2-256)"
2775 default "4" if NR_CPUS_DEFAULT_4
2776 default "8" if NR_CPUS_DEFAULT_8
2777 default "16" if NR_CPUS_DEFAULT_16
2778 default "32" if NR_CPUS_DEFAULT_32
2779 default "64" if NR_CPUS_DEFAULT_64
2781 This allows you to specify the maximum number of CPUs which this
2782 kernel will support. The maximum supported value is 32 for 32-bit
2783 kernel and 64 for 64-bit kernels; the minimum value which makes
2784 sense is 1 for Qemu (useful only for kernel debugging purposes)
2785 and 2 for all others.
2787 This is purely to save memory - each supported CPU adds
2788 approximately eight kilobytes to the kernel image. For best
2789 performance should round up your number of processors to the next
2792 config MIPS_PERF_SHARED_TC_COUNTERS
2795 config MIPS_NR_CPU_NR_MAP_1024
2798 config MIPS_NR_CPU_NR_MAP
2801 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2802 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2805 # Timer Interrupt Frequency Configuration
2809 prompt "Timer frequency"
2812 Allows the configuration of the timer frequency.
2815 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2818 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2821 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2824 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2827 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2830 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2833 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2836 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2840 config SYS_SUPPORTS_24HZ
2843 config SYS_SUPPORTS_48HZ
2846 config SYS_SUPPORTS_100HZ
2849 config SYS_SUPPORTS_128HZ
2852 config SYS_SUPPORTS_250HZ
2855 config SYS_SUPPORTS_256HZ
2858 config SYS_SUPPORTS_1000HZ
2861 config SYS_SUPPORTS_1024HZ
2864 config SYS_SUPPORTS_ARBIT_HZ
2866 default y if !SYS_SUPPORTS_24HZ && \
2867 !SYS_SUPPORTS_48HZ && \
2868 !SYS_SUPPORTS_100HZ && \
2869 !SYS_SUPPORTS_128HZ && \
2870 !SYS_SUPPORTS_250HZ && \
2871 !SYS_SUPPORTS_256HZ && \
2872 !SYS_SUPPORTS_1000HZ && \
2873 !SYS_SUPPORTS_1024HZ
2879 default 100 if HZ_100
2880 default 128 if HZ_128
2881 default 250 if HZ_250
2882 default 256 if HZ_256
2883 default 1000 if HZ_1000
2884 default 1024 if HZ_1024
2887 def_bool HIGH_RES_TIMERS
2890 bool "Kexec system call"
2893 kexec is a system call that implements the ability to shutdown your
2894 current kernel, and to start another kernel. It is like a reboot
2895 but it is independent of the system firmware. And like a reboot
2896 you can start any kernel with it, not just Linux.
2898 The name comes from the similarity to the exec system call.
2900 It is an ongoing process to be certain the hardware in a machine
2901 is properly shutdown, so do not be surprised if this code does not
2902 initially work for you. As of this writing the exact hardware
2903 interface is strongly in flux, so no good recommendation can be
2907 bool "Kernel crash dumps"
2909 Generate crash dump after being started by kexec.
2910 This should be normally only set in special crash dump kernels
2911 which are loaded in the main kernel with kexec-tools into
2912 a specially reserved region and then later executed after
2913 a crash by kdump/kexec. The crash dump kernel must be compiled
2914 to a memory address not used by the main kernel or firmware using
2917 config PHYSICAL_START
2918 hex "Physical address where the kernel is loaded"
2919 default "0xffffffff84000000"
2920 depends on CRASH_DUMP
2922 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2923 If you plan to use kernel for capturing the crash dump change
2924 this value to start of the reserved region (the "X" value as
2925 specified in the "crashkernel=YM@XM" command line boot parameter
2926 passed to the panic-ed kernel).
2929 bool "Enable seccomp to safely compute untrusted bytecode"
2933 This kernel feature is useful for number crunching applications
2934 that may need to compute untrusted bytecode during their
2935 execution. By using pipes or other transports made available to
2936 the process as file descriptors supporting the read/write
2937 syscalls, it's possible to isolate those applications in
2938 their own address space using seccomp. Once seccomp is
2939 enabled via /proc/<pid>/seccomp, it cannot be disabled
2940 and the task is only allowed to execute a few safe syscalls
2941 defined by each seccomp mode.
2943 If unsure, say Y. Only embedded should say N here.
2945 config MIPS_O32_FP64_SUPPORT
2946 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
2947 depends on 32BIT || MIPS32_O32
2949 When this is enabled, the kernel will support use of 64-bit floating
2950 point registers with binaries using the O32 ABI along with the
2951 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2952 32-bit MIPS systems this support is at the cost of increasing the
2953 size and complexity of the compiled FPU emulator. Thus if you are
2954 running a MIPS32 system and know that none of your userland binaries
2955 will require 64-bit floating point, you may wish to reduce the size
2956 of your kernel & potentially improve FP emulation performance by
2959 Although binutils currently supports use of this flag the details
2960 concerning its effect upon the O32 ABI in userland are still being
2961 worked on. In order to avoid userland becoming dependant upon current
2962 behaviour before the details have been finalised, this option should
2963 be considered experimental and only enabled by those working upon
2971 select OF_EARLY_FLATTREE
2981 prompt "Kernel appended dtb support" if USE_OF
2982 default MIPS_NO_APPENDED_DTB
2984 config MIPS_NO_APPENDED_DTB
2987 Do not enable appended dtb support.
2989 config MIPS_ELF_APPENDED_DTB
2992 With this option, the boot code will look for a device tree binary
2993 DTB) included in the vmlinux ELF section .appended_dtb. By default
2994 it is empty and the DTB can be appended using binutils command
2997 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2999 This is meant as a backward compatiblity convenience for those
3000 systems with a bootloader that can't be upgraded to accommodate
3001 the documented boot protocol using a device tree.
3003 config MIPS_RAW_APPENDED_DTB
3004 bool "vmlinux.bin or vmlinuz.bin"
3006 With this option, the boot code will look for a device tree binary
3007 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
3008 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
3010 This is meant as a backward compatibility convenience for those
3011 systems with a bootloader that can't be upgraded to accommodate
3012 the documented boot protocol using a device tree.
3014 Beware that there is very little in terms of protection against
3015 this option being confused by leftover garbage in memory that might
3016 look like a DTB header after a reboot if no actual DTB is appended
3017 to vmlinux.bin. Do not leave this option active in a production kernel
3018 if you don't intend to always append a DTB.
3022 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
3023 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
3026 default MIPS_CMDLINE_FROM_BOOTLOADER
3028 config MIPS_CMDLINE_FROM_DTB
3030 bool "Dtb kernel arguments if available"
3032 config MIPS_CMDLINE_DTB_EXTEND
3034 bool "Extend dtb kernel arguments with bootloader arguments"
3036 config MIPS_CMDLINE_FROM_BOOTLOADER
3037 bool "Bootloader kernel arguments if available"
3039 config MIPS_CMDLINE_BUILTIN_EXTEND
3040 depends on CMDLINE_BOOL
3041 bool "Extend builtin kernel arguments with bootloader arguments"
3046 config LOCKDEP_SUPPORT
3050 config STACKTRACE_SUPPORT
3054 config PGTABLE_LEVELS
3056 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3057 default 3 if 64BIT && !PAGE_SIZE_64KB
3060 config MIPS_AUTO_PFN_OFFSET
3063 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3065 config PCI_DRIVERS_GENERIC
3066 select PCI_DOMAINS_GENERIC if PCI
3069 config PCI_DRIVERS_LEGACY
3070 def_bool !PCI_DRIVERS_GENERIC
3071 select NO_GENERIC_PCI_IOPORT_MAP
3072 select PCI_DOMAINS if PCI
3075 # ISA support is now enabled via select. Too many systems still have the one
3076 # or other ISA chip on the board that users don't know about so don't expect
3077 # users to choose the right thing ...
3083 bool "TURBOchannel support"
3084 depends on MACH_DECSTATION
3086 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3087 processors. TURBOchannel programming specifications are available
3089 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3091 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3092 Linux driver support status is documented at:
3093 <http://www.linux-mips.org/wiki/DECstation>
3099 config ARCH_MMAP_RND_BITS_MIN
3103 config ARCH_MMAP_RND_BITS_MAX
3107 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3110 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3117 select MIPS_EXTERNAL_TIMER
3130 config MIPS32_COMPAT
3136 config SYSVIPC_COMPAT
3140 bool "Kernel support for o32 binaries"
3142 select ARCH_WANT_OLD_COMPAT_IPC
3144 select MIPS32_COMPAT
3145 select SYSVIPC_COMPAT if SYSVIPC
3147 Select this option if you want to run o32 binaries. These are pure
3148 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3149 existing binaries are in this format.
3154 bool "Kernel support for n32 binaries"
3156 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3158 select MIPS32_COMPAT
3159 select SYSVIPC_COMPAT if SYSVIPC
3161 Select this option if you want to run n32 binaries. These are
3162 64-bit binaries using 32-bit quantities for addressing and certain
3163 data that would normally be 64-bit. They are used in special
3170 default y if MIPS32_O32 || MIPS32_N32
3173 menu "Power management options"
3175 config ARCH_HIBERNATION_POSSIBLE
3177 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3179 config ARCH_SUSPEND_POSSIBLE
3181 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3183 source "kernel/power/Kconfig"
3187 config MIPS_EXTERNAL_TIMER
3190 menu "CPU Power Management"
3192 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3193 source "drivers/cpufreq/Kconfig"
3196 source "drivers/cpuidle/Kconfig"
3200 source "drivers/firmware/Kconfig"
3202 source "arch/mips/kvm/Kconfig"