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 HANDLE_DOMAIN_IRQ
38 select HAVE_ARCH_COMPILER_H
39 select HAVE_ARCH_JUMP_LABEL
41 select HAVE_ARCH_MMAP_RND_BITS if MMU
42 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
43 select HAVE_ARCH_SECCOMP_FILTER
44 select HAVE_ARCH_TRACEHOOK
45 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
46 select HAVE_EBPF_JIT if (!CPU_MICROMIPS)
47 select HAVE_CONTEXT_TRACKING
48 select HAVE_COPY_THREAD_TLS
49 select HAVE_C_RECORDMCOUNT
50 select HAVE_DEBUG_KMEMLEAK
51 select HAVE_DEBUG_STACKOVERFLOW
52 select HAVE_DMA_CONTIGUOUS
53 select HAVE_DYNAMIC_FTRACE
54 select HAVE_EXIT_THREAD
55 select HAVE_FTRACE_MCOUNT_RECORD
56 select HAVE_FUNCTION_GRAPH_TRACER
57 select HAVE_FUNCTION_TRACER
59 select HAVE_IOREMAP_PROT
60 select HAVE_IRQ_EXIT_ON_IRQ_STACK
61 select HAVE_IRQ_TIME_ACCOUNTING
63 select HAVE_KRETPROBES
64 select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
65 select HAVE_MEMBLOCK_NODE_MAP
66 select HAVE_MOD_ARCH_SPECIFIC
69 select HAVE_PERF_EVENTS
70 select HAVE_REGS_AND_STACK_ACCESS_API
72 select HAVE_STACKPROTECTOR
73 select HAVE_SYSCALL_TRACEPOINTS
74 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
75 select IRQ_FORCED_THREADING
77 select MODULES_USE_ELF_RELA if MODULES && 64BIT
78 select MODULES_USE_ELF_REL if MODULES
79 select PERF_USE_VMALLOC
81 select SYSCTL_EXCEPTION_TRACE
84 menu "Machine selection"
91 bool "Generic board-agnostic MIPS kernel"
95 select CLKSRC_MIPS_GIC
97 select CPU_MIPSR2_IRQ_VI
98 select CPU_MIPSR2_IRQ_EI
100 select DMA_PERDEV_COHERENT
104 select MIPS_AUTO_PFN_OFFSET
105 select MIPS_CPU_SCACHE
107 select MIPS_L1_CACHE_SHIFT_7
108 select NO_EXCEPT_FILL
109 select PCI_DRIVERS_GENERIC
113 select SYS_HAS_CPU_MIPS32_R1
114 select SYS_HAS_CPU_MIPS32_R2
115 select SYS_HAS_CPU_MIPS32_R6
116 select SYS_HAS_CPU_MIPS64_R1
117 select SYS_HAS_CPU_MIPS64_R2
118 select SYS_HAS_CPU_MIPS64_R6
119 select SYS_SUPPORTS_32BIT_KERNEL
120 select SYS_SUPPORTS_64BIT_KERNEL
121 select SYS_SUPPORTS_BIG_ENDIAN
122 select SYS_SUPPORTS_HIGHMEM
123 select SYS_SUPPORTS_LITTLE_ENDIAN
124 select SYS_SUPPORTS_MICROMIPS
125 select SYS_SUPPORTS_MIPS_CPS
126 select SYS_SUPPORTS_MIPS16
127 select SYS_SUPPORTS_MULTITHREADING
128 select SYS_SUPPORTS_RELOCATABLE
129 select SYS_SUPPORTS_SMARTMIPS
130 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
131 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
132 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
133 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
134 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
135 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
139 Select this to build a kernel which aims to support multiple boards,
140 generally using a flattened device tree passed from the bootloader
141 using the boot protocol defined in the UHI (Unified Hosting
142 Interface) specification.
145 bool "Alchemy processor based machines"
146 select PHYS_ADDR_T_64BIT
150 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
151 select SYS_HAS_CPU_MIPS32_R1
152 select SYS_SUPPORTS_32BIT_KERNEL
153 select SYS_SUPPORTS_APM_EMULATION
155 select SYS_SUPPORTS_ZBOOT
159 bool "Texas Instruments AR7"
161 select DMA_NONCOHERENT
165 select NO_EXCEPT_FILL
167 select SYS_HAS_CPU_MIPS32_R1
168 select SYS_HAS_EARLY_PRINTK
169 select SYS_SUPPORTS_32BIT_KERNEL
170 select SYS_SUPPORTS_LITTLE_ENDIAN
171 select SYS_SUPPORTS_MIPS16
172 select SYS_SUPPORTS_ZBOOT_UART16550
177 Support for the Texas Instruments AR7 System-on-a-Chip
178 family: TNETD7100, 7200 and 7300.
181 bool "Atheros AR231x/AR531x SoC support"
184 select DMA_NONCOHERENT
187 select SYS_HAS_CPU_MIPS32_R1
188 select SYS_SUPPORTS_BIG_ENDIAN
189 select SYS_SUPPORTS_32BIT_KERNEL
190 select SYS_HAS_EARLY_PRINTK
192 Support for Atheros AR231x and Atheros AR531x based boards
195 bool "Atheros AR71XX/AR724X/AR913X based boards"
196 select ARCH_HAS_RESET_CONTROLLER
200 select DMA_NONCOHERENT
207 select SYS_HAS_CPU_MIPS32_R2
208 select SYS_HAS_EARLY_PRINTK
209 select SYS_SUPPORTS_32BIT_KERNEL
210 select SYS_SUPPORTS_BIG_ENDIAN
211 select SYS_SUPPORTS_MIPS16
212 select SYS_SUPPORTS_ZBOOT_UART_PROM
214 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
216 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
219 bool "Broadcom Generic BMIPS kernel"
220 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
221 select ARCH_HAS_PHYS_TO_DMA
223 select NO_EXCEPT_FILL
229 select BCM6345_L1_IRQ
230 select BCM7038_L1_IRQ
231 select BCM7120_L2_IRQ
232 select BRCMSTB_L2_IRQ
234 select DMA_NONCOHERENT
235 select SYS_SUPPORTS_32BIT_KERNEL
236 select SYS_SUPPORTS_LITTLE_ENDIAN
237 select SYS_SUPPORTS_BIG_ENDIAN
238 select SYS_SUPPORTS_HIGHMEM
239 select SYS_HAS_CPU_BMIPS32_3300
240 select SYS_HAS_CPU_BMIPS4350
241 select SYS_HAS_CPU_BMIPS4380
242 select SYS_HAS_CPU_BMIPS5000
244 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
245 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
246 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
247 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
248 select HARDIRQS_SW_RESEND
250 Build a generic DT-based kernel image that boots on select
251 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
252 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
253 must be set appropriately for your board.
256 bool "Broadcom BCM47XX based boards"
260 select DMA_NONCOHERENT
263 select SYS_HAS_CPU_MIPS32_R1
264 select NO_EXCEPT_FILL
265 select SYS_SUPPORTS_32BIT_KERNEL
266 select SYS_SUPPORTS_LITTLE_ENDIAN
267 select SYS_SUPPORTS_MIPS16
268 select SYS_SUPPORTS_ZBOOT
269 select SYS_HAS_EARLY_PRINTK
270 select USE_GENERIC_EARLY_PRINTK_8250
272 select LEDS_GPIO_REGISTER
275 select BCM47XX_SSB if !BCM47XX_BCMA
277 Support for BCM47XX based boards
280 bool "Broadcom BCM63XX based boards"
285 select DMA_NONCOHERENT
287 select SYS_SUPPORTS_32BIT_KERNEL
288 select SYS_SUPPORTS_BIG_ENDIAN
289 select SYS_HAS_EARLY_PRINTK
293 select MIPS_L1_CACHE_SHIFT_4
296 Support for BCM63XX based boards
303 select DMA_NONCOHERENT
309 select PCI_GT64XXX_PCI0
310 select SYS_HAS_CPU_NEVADA
311 select SYS_HAS_EARLY_PRINTK
312 select SYS_SUPPORTS_32BIT_KERNEL
313 select SYS_SUPPORTS_64BIT_KERNEL
314 select SYS_SUPPORTS_LITTLE_ENDIAN
315 select USE_GENERIC_EARLY_PRINTK_8250
317 config MACH_DECSTATION
321 select CEVT_R4K if CPU_R4X00
323 select CSRC_R4K if CPU_R4X00
324 select CPU_DADDI_WORKAROUNDS if 64BIT
325 select CPU_R4000_WORKAROUNDS if 64BIT
326 select CPU_R4400_WORKAROUNDS if 64BIT
327 select DMA_NONCOHERENT
330 select SYS_HAS_CPU_R3000
331 select SYS_HAS_CPU_R4X00
332 select SYS_SUPPORTS_32BIT_KERNEL
333 select SYS_SUPPORTS_64BIT_KERNEL
334 select SYS_SUPPORTS_LITTLE_ENDIAN
335 select SYS_SUPPORTS_128HZ
336 select SYS_SUPPORTS_256HZ
337 select SYS_SUPPORTS_1024HZ
338 select MIPS_L1_CACHE_SHIFT_4
340 This enables support for DEC's MIPS based workstations. For details
341 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
342 DECstation porting pages on <http://decstation.unix-ag.org/>.
344 If you have one of the following DECstation Models you definitely
345 want to choose R4xx0 for the CPU Type:
352 otherwise choose R3000.
355 bool "Jazz family of machines"
356 select ARCH_MIGHT_HAVE_PC_PARPORT
357 select ARCH_MIGHT_HAVE_PC_SERIO
360 select ARCH_MAY_HAVE_PC_FDC
363 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
364 select GENERIC_ISA_DMA
365 select HAVE_PCSPKR_PLATFORM
370 select SYS_HAS_CPU_R4X00
371 select SYS_SUPPORTS_32BIT_KERNEL
372 select SYS_SUPPORTS_64BIT_KERNEL
373 select SYS_SUPPORTS_100HZ
375 This a family of machines based on the MIPS R4030 chipset which was
376 used by several vendors to build RISC/os and Windows NT workstations.
377 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
378 Olivetti M700-10 workstations.
381 bool "Ingenic SoC based machines"
382 select SYS_SUPPORTS_32BIT_KERNEL
383 select SYS_SUPPORTS_LITTLE_ENDIAN
384 select SYS_SUPPORTS_ZBOOT_UART16550
385 select DMA_NONCOHERENT
390 select GENERIC_IRQ_CHIP
391 select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
396 bool "Lantiq based platforms"
397 select DMA_NONCOHERENT
401 select SYS_HAS_CPU_MIPS32_R1
402 select SYS_HAS_CPU_MIPS32_R2
403 select SYS_SUPPORTS_BIG_ENDIAN
404 select SYS_SUPPORTS_32BIT_KERNEL
405 select SYS_SUPPORTS_MIPS16
406 select SYS_SUPPORTS_MULTITHREADING
407 select SYS_SUPPORTS_VPE_LOADER
408 select SYS_HAS_EARLY_PRINTK
415 select PINCTRL_LANTIQ
416 select ARCH_HAS_RESET_CONTROLLER
417 select RESET_CONTROLLER
420 bool "LASAT Networks platforms"
424 select DMA_NONCOHERENT
425 select SYS_HAS_EARLY_PRINTK
428 select PCI_GT64XXX_PCI0
430 select R5000_CPU_SCACHE
431 select SYS_HAS_CPU_R5000
432 select SYS_SUPPORTS_32BIT_KERNEL
433 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
434 select SYS_SUPPORTS_LITTLE_ENDIAN
436 config MACH_LOONGSON32
437 bool "Loongson-1 family of machines"
438 select SYS_SUPPORTS_ZBOOT
440 This enables support for the Loongson-1 family of machines.
442 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
443 the Institute of Computing Technology (ICT), Chinese Academy of
446 config MACH_LOONGSON64
447 bool "Loongson-2/3 family of machines"
448 select SYS_SUPPORTS_ZBOOT
450 This enables the support of Loongson-2/3 family of machines.
452 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
453 family of multi-core CPUs. They are both 64-bit general-purpose
454 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
455 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
456 in the People's Republic of China. The chief architect is Professor
459 config MACH_PISTACHIO
460 bool "IMG Pistachio SoC based boards"
464 select CLKSRC_MIPS_GIC
467 select DMA_NONCOHERENT
472 select MIPS_CPU_SCACHE
476 select SYS_HAS_CPU_MIPS32_R2
477 select SYS_SUPPORTS_32BIT_KERNEL
478 select SYS_SUPPORTS_LITTLE_ENDIAN
479 select SYS_SUPPORTS_MIPS_CPS
480 select SYS_SUPPORTS_MULTITHREADING
481 select SYS_SUPPORTS_RELOCATABLE
482 select SYS_SUPPORTS_ZBOOT
483 select SYS_HAS_EARLY_PRINTK
484 select USE_GENERIC_EARLY_PRINTK_8250
487 This enables support for the IMG Pistachio SoC platform.
490 bool "MIPS Malta board"
491 select ARCH_MAY_HAVE_PC_FDC
492 select ARCH_MIGHT_HAVE_PC_PARPORT
493 select ARCH_MIGHT_HAVE_PC_SERIO
498 select CLKSRC_MIPS_GIC
501 select DMA_MAYBE_COHERENT
502 select GENERIC_ISA_DMA
503 select HAVE_PCSPKR_PLATFORM
510 select MIPS_CPU_SCACHE
512 select MIPS_L1_CACHE_SHIFT_6
514 select PCI_GT64XXX_PCI0
517 select SYS_HAS_CPU_MIPS32_R1
518 select SYS_HAS_CPU_MIPS32_R2
519 select SYS_HAS_CPU_MIPS32_R3_5
520 select SYS_HAS_CPU_MIPS32_R5
521 select SYS_HAS_CPU_MIPS32_R6
522 select SYS_HAS_CPU_MIPS64_R1
523 select SYS_HAS_CPU_MIPS64_R2
524 select SYS_HAS_CPU_MIPS64_R6
525 select SYS_HAS_CPU_NEVADA
526 select SYS_HAS_CPU_RM7000
527 select SYS_SUPPORTS_32BIT_KERNEL
528 select SYS_SUPPORTS_64BIT_KERNEL
529 select SYS_SUPPORTS_BIG_ENDIAN
530 select SYS_SUPPORTS_HIGHMEM
531 select SYS_SUPPORTS_LITTLE_ENDIAN
532 select SYS_SUPPORTS_MICROMIPS
533 select SYS_SUPPORTS_MIPS16
534 select SYS_SUPPORTS_MIPS_CMP
535 select SYS_SUPPORTS_MIPS_CPS
536 select SYS_SUPPORTS_MULTITHREADING
537 select SYS_SUPPORTS_RELOCATABLE
538 select SYS_SUPPORTS_SMARTMIPS
539 select SYS_SUPPORTS_VPE_LOADER
540 select SYS_SUPPORTS_ZBOOT
542 select ZONE_DMA32 if 64BIT
544 This enables support for the MIPS Technologies Malta evaluation
548 bool "Microchip PIC32 Family"
550 This enables support for the Microchip PIC32 family of platforms.
552 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
556 bool "NEC EMMA2RH Mark-eins board"
560 This enables support for the NEC Electronics Mark-eins boards.
563 bool "NEC VR4100 series based machines"
566 select SYS_HAS_CPU_VR41XX
567 select SYS_SUPPORTS_MIPS16
571 bool "NXP STB220 board"
574 Support for NXP Semiconductors STB220 Development Board.
581 Support for NXP Semiconductors STB225 Development Board.
584 bool "PMC-Sierra MSP chipsets"
587 select DMA_NONCOHERENT
589 select NO_EXCEPT_FILL
591 select SYS_HAS_CPU_MIPS32_R1
592 select SYS_HAS_CPU_MIPS32_R2
593 select SYS_SUPPORTS_32BIT_KERNEL
594 select SYS_SUPPORTS_BIG_ENDIAN
595 select SYS_SUPPORTS_MIPS16
598 select SERIAL_8250_CONSOLE
599 select USB_EHCI_BIG_ENDIAN_MMIO
600 select USB_EHCI_BIG_ENDIAN_DESC
602 This adds support for the PMC-Sierra family of Multi-Service
603 Processor System-On-A-Chips. These parts include a number
604 of integrated peripherals, interfaces and DSPs in addition to
605 a variety of MIPS cores.
608 bool "Ralink based machines"
612 select DMA_NONCOHERENT
615 select SYS_HAS_CPU_MIPS32_R1
616 select SYS_HAS_CPU_MIPS32_R2
617 select SYS_SUPPORTS_32BIT_KERNEL
618 select SYS_SUPPORTS_LITTLE_ENDIAN
619 select SYS_SUPPORTS_MIPS16
620 select SYS_HAS_EARLY_PRINTK
622 select ARCH_HAS_RESET_CONTROLLER
623 select RESET_CONTROLLER
626 bool "SGI IP22 (Indy/Indigo2)"
629 select ARCH_MIGHT_HAVE_PC_SERIO
633 select DEFAULT_SGI_PARTITION
634 select DMA_NONCOHERENT
638 select IP22_CPU_SCACHE
640 select GENERIC_ISA_DMA_SUPPORT_BROKEN
642 select SGI_HAS_INDYDOG
648 select SYS_HAS_CPU_R4X00
649 select SYS_HAS_CPU_R5000
651 # Disable EARLY_PRINTK for now since it leads to overwritten prom
652 # memory during early boot on some machines.
654 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
655 # for a more details discussion
657 # select SYS_HAS_EARLY_PRINTK
658 select SYS_SUPPORTS_32BIT_KERNEL
659 select SYS_SUPPORTS_64BIT_KERNEL
660 select SYS_SUPPORTS_BIG_ENDIAN
661 select MIPS_L1_CACHE_SHIFT_7
663 This are the SGI Indy, Challenge S and Indigo2, as well as certain
664 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
665 that runs on these, say Y here.
668 bool "SGI IP27 (Origin200/2000)"
669 select ARCH_HAS_PHYS_TO_DMA
673 select DEFAULT_SGI_PARTITION
674 select SYS_HAS_EARLY_PRINTK
677 select NR_CPUS_DEFAULT_64
678 select SYS_HAS_CPU_R10000
679 select SYS_SUPPORTS_64BIT_KERNEL
680 select SYS_SUPPORTS_BIG_ENDIAN
681 select SYS_SUPPORTS_NUMA
682 select SYS_SUPPORTS_SMP
683 select MIPS_L1_CACHE_SHIFT_7
685 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
686 workstations. To compile a Linux kernel that runs on these, say Y
690 bool "SGI IP28 (Indigo2 R10k)"
693 select ARCH_MIGHT_HAVE_PC_SERIO
697 select DEFAULT_SGI_PARTITION
698 select DMA_NONCOHERENT
699 select GENERIC_ISA_DMA_SUPPORT_BROKEN
705 select SGI_HAS_INDYDOG
711 select SYS_HAS_CPU_R10000
713 # Disable EARLY_PRINTK for now since it leads to overwritten prom
714 # memory during early boot on some machines.
716 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
717 # for a more details discussion
719 # select SYS_HAS_EARLY_PRINTK
720 select SYS_SUPPORTS_64BIT_KERNEL
721 select SYS_SUPPORTS_BIG_ENDIAN
722 select MIPS_L1_CACHE_SHIFT_7
724 This is the SGI Indigo2 with R10000 processor. To compile a Linux
725 kernel that runs on these, say Y here.
729 select ARCH_HAS_PHYS_TO_DMA
735 select DMA_NONCOHERENT
738 select R5000_CPU_SCACHE
739 select RM7000_CPU_SCACHE
740 select SYS_HAS_CPU_R5000
741 select SYS_HAS_CPU_R10000 if BROKEN
742 select SYS_HAS_CPU_RM7000
743 select SYS_HAS_CPU_NEVADA
744 select SYS_SUPPORTS_64BIT_KERNEL
745 select SYS_SUPPORTS_BIG_ENDIAN
747 If you want this kernel to run on SGI O2 workstation, say Y here.
750 bool "Sibyte BCM91120C-CRhine"
752 select SIBYTE_BCM1120
754 select SYS_HAS_CPU_SB1
755 select SYS_SUPPORTS_BIG_ENDIAN
756 select SYS_SUPPORTS_LITTLE_ENDIAN
759 bool "Sibyte BCM91120x-Carmel"
761 select SIBYTE_BCM1120
763 select SYS_HAS_CPU_SB1
764 select SYS_SUPPORTS_BIG_ENDIAN
765 select SYS_SUPPORTS_LITTLE_ENDIAN
768 bool "Sibyte BCM91125C-CRhone"
770 select SIBYTE_BCM1125
772 select SYS_HAS_CPU_SB1
773 select SYS_SUPPORTS_BIG_ENDIAN
774 select SYS_SUPPORTS_HIGHMEM
775 select SYS_SUPPORTS_LITTLE_ENDIAN
778 bool "Sibyte BCM91125E-Rhone"
780 select SIBYTE_BCM1125H
782 select SYS_HAS_CPU_SB1
783 select SYS_SUPPORTS_BIG_ENDIAN
784 select SYS_SUPPORTS_LITTLE_ENDIAN
787 bool "Sibyte BCM91250A-SWARM"
789 select HAVE_PATA_PLATFORM
792 select SYS_HAS_CPU_SB1
793 select SYS_SUPPORTS_BIG_ENDIAN
794 select SYS_SUPPORTS_HIGHMEM
795 select SYS_SUPPORTS_LITTLE_ENDIAN
796 select ZONE_DMA32 if 64BIT
797 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
799 config SIBYTE_LITTLESUR
800 bool "Sibyte BCM91250C2-LittleSur"
802 select HAVE_PATA_PLATFORM
805 select SYS_HAS_CPU_SB1
806 select SYS_SUPPORTS_BIG_ENDIAN
807 select SYS_SUPPORTS_HIGHMEM
808 select SYS_SUPPORTS_LITTLE_ENDIAN
809 select ZONE_DMA32 if 64BIT
811 config SIBYTE_SENTOSA
812 bool "Sibyte BCM91250E-Sentosa"
816 select SYS_HAS_CPU_SB1
817 select SYS_SUPPORTS_BIG_ENDIAN
818 select SYS_SUPPORTS_LITTLE_ENDIAN
819 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
822 bool "Sibyte BCM91480B-BigSur"
824 select NR_CPUS_DEFAULT_4
825 select SIBYTE_BCM1x80
827 select SYS_HAS_CPU_SB1
828 select SYS_SUPPORTS_BIG_ENDIAN
829 select SYS_SUPPORTS_HIGHMEM
830 select SYS_SUPPORTS_LITTLE_ENDIAN
831 select ZONE_DMA32 if 64BIT
832 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
835 bool "SNI RM200/300/400"
836 select FW_ARC if CPU_LITTLE_ENDIAN
837 select FW_ARC32 if CPU_LITTLE_ENDIAN
838 select FW_SNIPROM if CPU_BIG_ENDIAN
839 select ARCH_MAY_HAVE_PC_FDC
840 select ARCH_MIGHT_HAVE_PC_PARPORT
841 select ARCH_MIGHT_HAVE_PC_SERIO
845 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
846 select DMA_NONCOHERENT
847 select GENERIC_ISA_DMA
849 select HAVE_PCSPKR_PLATFORM
855 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
856 select SYS_HAS_CPU_R4X00
857 select SYS_HAS_CPU_R5000
858 select SYS_HAS_CPU_R10000
859 select R5000_CPU_SCACHE
860 select SYS_HAS_EARLY_PRINTK
861 select SYS_SUPPORTS_32BIT_KERNEL
862 select SYS_SUPPORTS_64BIT_KERNEL
863 select SYS_SUPPORTS_BIG_ENDIAN
864 select SYS_SUPPORTS_HIGHMEM
865 select SYS_SUPPORTS_LITTLE_ENDIAN
867 The SNI RM200/300/400 are MIPS-based machines manufactured by
868 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
869 Technology and now in turn merged with Fujitsu. Say Y here to
870 support this machine type.
873 bool "Toshiba TX39 series based machines"
876 bool "Toshiba TX49 series based machines"
878 config MIKROTIK_RB532
879 bool "Mikrotik RB532 boards"
882 select DMA_NONCOHERENT
885 select SYS_HAS_CPU_MIPS32_R1
886 select SYS_SUPPORTS_32BIT_KERNEL
887 select SYS_SUPPORTS_LITTLE_ENDIAN
891 select MIPS_L1_CACHE_SHIFT_4
893 Support the Mikrotik(tm) RouterBoard 532 series,
894 based on the IDT RC32434 SoC.
896 config CAVIUM_OCTEON_SOC
897 bool "Cavium Networks Octeon SoC based boards"
899 select ARCH_HAS_PHYS_TO_DMA
901 select PHYS_ADDR_T_64BIT
902 select SYS_SUPPORTS_64BIT_KERNEL
903 select SYS_SUPPORTS_BIG_ENDIAN
905 select EDAC_ATOMIC_SCRUB
906 select SYS_SUPPORTS_LITTLE_ENDIAN
907 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
908 select SYS_HAS_EARLY_PRINTK
909 select SYS_HAS_CPU_CAVIUM_OCTEON
916 select ARCH_SPARSEMEM_ENABLE
917 select SYS_SUPPORTS_SMP
918 select NR_CPUS_DEFAULT_64
919 select MIPS_NR_CPU_NR_MAP_1024
921 select MTD_COMPLEX_MAPPINGS
923 select SYS_SUPPORTS_RELOCATABLE
925 This option supports all of the Octeon reference boards from Cavium
926 Networks. It builds a kernel that dynamically determines the Octeon
927 CPU type and supports all known board reference implementations.
928 Some of the supported boards are:
935 Say Y here for most Octeon reference boards.
938 bool "Netlogic XLR/XLS based systems"
941 select SYS_HAS_CPU_XLR
942 select SYS_SUPPORTS_SMP
945 select SYS_SUPPORTS_32BIT_KERNEL
946 select SYS_SUPPORTS_64BIT_KERNEL
947 select PHYS_ADDR_T_64BIT
948 select SYS_SUPPORTS_BIG_ENDIAN
949 select SYS_SUPPORTS_HIGHMEM
950 select NR_CPUS_DEFAULT_32
954 select ZONE_DMA32 if 64BIT
956 select SYS_HAS_EARLY_PRINTK
957 select SYS_SUPPORTS_ZBOOT
958 select SYS_SUPPORTS_ZBOOT_UART16550
960 Support for systems based on Netlogic XLR and XLS processors.
961 Say Y here if you have a XLR or XLS based board.
964 bool "Netlogic XLP based systems"
967 select SYS_HAS_CPU_XLP
968 select SYS_SUPPORTS_SMP
970 select SYS_SUPPORTS_32BIT_KERNEL
971 select SYS_SUPPORTS_64BIT_KERNEL
972 select PHYS_ADDR_T_64BIT
974 select SYS_SUPPORTS_BIG_ENDIAN
975 select SYS_SUPPORTS_LITTLE_ENDIAN
976 select SYS_SUPPORTS_HIGHMEM
977 select NR_CPUS_DEFAULT_32
981 select ZONE_DMA32 if 64BIT
983 select SYS_HAS_EARLY_PRINTK
985 select SYS_SUPPORTS_ZBOOT
986 select SYS_SUPPORTS_ZBOOT_UART16550
988 This board is based on Netlogic XLP Processor.
989 Say Y here if you have a XLP based board.
992 bool "Para-Virtualized guest system"
995 select SYS_SUPPORTS_64BIT_KERNEL
996 select SYS_SUPPORTS_32BIT_KERNEL
997 select SYS_SUPPORTS_BIG_ENDIAN
998 select SYS_SUPPORTS_SMP
999 select NR_CPUS_DEFAULT_4
1000 select SYS_HAS_EARLY_PRINTK
1001 select SYS_HAS_CPU_MIPS32_R2
1002 select SYS_HAS_CPU_MIPS64_R2
1003 select SYS_HAS_CPU_CAVIUM_OCTEON
1005 select SWAP_IO_SPACE
1007 This option supports guest running under ????
1011 source "arch/mips/alchemy/Kconfig"
1012 source "arch/mips/ath25/Kconfig"
1013 source "arch/mips/ath79/Kconfig"
1014 source "arch/mips/bcm47xx/Kconfig"
1015 source "arch/mips/bcm63xx/Kconfig"
1016 source "arch/mips/bmips/Kconfig"
1017 source "arch/mips/generic/Kconfig"
1018 source "arch/mips/jazz/Kconfig"
1019 source "arch/mips/jz4740/Kconfig"
1020 source "arch/mips/lantiq/Kconfig"
1021 source "arch/mips/lasat/Kconfig"
1022 source "arch/mips/pic32/Kconfig"
1023 source "arch/mips/pistachio/Kconfig"
1024 source "arch/mips/pmcs-msp71xx/Kconfig"
1025 source "arch/mips/ralink/Kconfig"
1026 source "arch/mips/sgi-ip27/Kconfig"
1027 source "arch/mips/sibyte/Kconfig"
1028 source "arch/mips/txx9/Kconfig"
1029 source "arch/mips/vr41xx/Kconfig"
1030 source "arch/mips/cavium-octeon/Kconfig"
1031 source "arch/mips/loongson32/Kconfig"
1032 source "arch/mips/loongson64/Kconfig"
1033 source "arch/mips/netlogic/Kconfig"
1034 source "arch/mips/paravirt/Kconfig"
1038 config GENERIC_HWEIGHT
1042 config GENERIC_CALIBRATE_DELAY
1046 config SCHED_OMIT_FRAME_POINTER
1051 # Select some configuration options automatically based on user selections.
1056 config ARCH_MAY_HAVE_PC_FDC
1092 config MIPS_CLOCK_VSYSCALL
1093 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1102 config ARCH_SUPPORTS_UPROBES
1105 config DMA_MAYBE_COHERENT
1106 select ARCH_HAS_DMA_COHERENCE_H
1107 select DMA_NONCOHERENT
1110 config DMA_PERDEV_COHERENT
1112 select ARCH_HAS_SETUP_DMA_OPS
1113 select DMA_NONCOHERENT
1115 config DMA_NONCOHERENT
1117 select ARCH_HAS_DMA_MMAP_PGPROT
1118 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1119 select NEED_DMA_MAP_STATE
1120 select ARCH_HAS_DMA_COHERENT_TO_PFN
1121 select DMA_NONCOHERENT_CACHE_SYNC
1123 config SYS_HAS_EARLY_PRINTK
1126 config SYS_SUPPORTS_HOTPLUG_CPU
1129 config MIPS_BONITO64
1144 config NO_IOPORT_MAP
1149 default y if !CPU_HAS_LOAD_STORE_LR
1151 config GENERIC_ISA_DMA
1153 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1156 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1158 select GENERIC_ISA_DMA
1163 config HOLES_IN_ZONE
1166 config SYS_SUPPORTS_RELOCATABLE
1169 Selected if the platform supports relocating the kernel.
1170 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1171 to allow access to command line and entropy sources.
1173 config MIPS_CBPF_JIT
1175 depends on BPF_JIT && HAVE_CBPF_JIT
1177 config MIPS_EBPF_JIT
1179 depends on BPF_JIT && HAVE_EBPF_JIT
1183 # Endianness selection. Sufficiently obscure so many users don't know what to
1184 # answer,so we try hard to limit the available choices. Also the use of a
1185 # choice statement should be more obvious to the user.
1188 prompt "Endianness selection"
1190 Some MIPS machines can be configured for either little or big endian
1191 byte order. These modes require different kernels and a different
1192 Linux distribution. In general there is one preferred byteorder for a
1193 particular system but some systems are just as commonly used in the
1194 one or the other endianness.
1196 config CPU_BIG_ENDIAN
1198 depends on SYS_SUPPORTS_BIG_ENDIAN
1200 config CPU_LITTLE_ENDIAN
1201 bool "Little endian"
1202 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1209 config SYS_SUPPORTS_APM_EMULATION
1212 config SYS_SUPPORTS_BIG_ENDIAN
1215 config SYS_SUPPORTS_LITTLE_ENDIAN
1218 config SYS_SUPPORTS_HUGETLBFS
1220 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1223 config MIPS_HUGE_TLB_SUPPORT
1224 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1241 config PCI_GT64XXX_PCI0
1244 config NO_EXCEPT_FILL
1251 select DMA_NONCOHERENT
1253 select SWAP_IO_SPACE
1254 select SYS_HAS_CPU_R5500
1255 select SYS_SUPPORTS_32BIT_KERNEL
1256 select SYS_SUPPORTS_64BIT_KERNEL
1257 select SYS_SUPPORTS_BIG_ENDIAN
1264 select DMA_NONCOHERENT
1265 select SYS_HAS_CPU_MIPS32_R2
1266 select SYS_SUPPORTS_32BIT_KERNEL
1267 select SYS_SUPPORTS_LITTLE_ENDIAN
1268 select SYS_SUPPORTS_BIG_ENDIAN
1269 select SYS_SUPPORTS_MIPS16
1270 select CPU_MIPSR2_IRQ_VI
1279 config SWAP_IO_SPACE
1282 config SGI_HAS_INDYDOG
1294 config SGI_HAS_ZILOG
1297 config SGI_HAS_I8042
1300 config DEFAULT_SGI_PARTITION
1312 config MIPS_L1_CACHE_SHIFT_4
1315 config MIPS_L1_CACHE_SHIFT_5
1318 config MIPS_L1_CACHE_SHIFT_6
1321 config MIPS_L1_CACHE_SHIFT_7
1324 config MIPS_L1_CACHE_SHIFT
1326 default "7" if MIPS_L1_CACHE_SHIFT_7
1327 default "6" if MIPS_L1_CACHE_SHIFT_6
1328 default "5" if MIPS_L1_CACHE_SHIFT_5
1329 default "4" if MIPS_L1_CACHE_SHIFT_4
1332 config HAVE_STD_PC_SERIAL_PORT
1336 bool "ARC console support"
1337 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1341 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1346 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1355 menu "CPU selection"
1361 config CPU_LOONGSON3
1362 bool "Loongson 3 CPU"
1363 depends on SYS_HAS_CPU_LOONGSON3
1364 select ARCH_HAS_PHYS_TO_DMA
1365 select CPU_SUPPORTS_64BIT_KERNEL
1366 select CPU_SUPPORTS_HIGHMEM
1367 select CPU_SUPPORTS_HUGEPAGES
1368 select CPU_HAS_LOAD_STORE_LR
1369 select WEAK_ORDERING
1370 select WEAK_REORDERING_BEYOND_LLSC
1371 select MIPS_PGD_C0_CONTEXT
1372 select MIPS_L1_CACHE_SHIFT_6
1376 The Loongson 3 processor implements the MIPS64R2 instruction
1377 set with many extensions.
1379 config LOONGSON3_ENHANCEMENT
1380 bool "New Loongson 3 CPU Enhancements"
1383 select CPU_HAS_PREFETCH
1384 depends on CPU_LOONGSON3
1386 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1387 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1388 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1389 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1390 Fast TLB refill support, etc.
1392 This option enable those enhancements which are not probed at run
1393 time. If you want a generic kernel to run on all Loongson 3 machines,
1394 please say 'N' here. If you want a high-performance kernel to run on
1395 new Loongson 3 machines only, please say 'Y' here.
1397 config CPU_LOONGSON3_WORKAROUNDS
1398 bool "Old Loongson 3 LLSC Workarounds"
1400 depends on CPU_LOONGSON3
1402 Loongson 3 processors have the llsc issues which require workarounds.
1403 Without workarounds the system may hang unexpectedly.
1405 Newer Loongson 3 will fix these issues and no workarounds are needed.
1406 The workarounds have no significant side effect on them but may
1407 decrease the performance of the system so this option should be
1408 disabled unless the kernel is intended to be run on old systems.
1410 If unsure, please say Y.
1412 config CPU_LOONGSON2E
1414 depends on SYS_HAS_CPU_LOONGSON2E
1415 select CPU_LOONGSON2
1417 The Loongson 2E processor implements the MIPS III instruction set
1418 with many extensions.
1420 It has an internal FPGA northbridge, which is compatible to
1423 config CPU_LOONGSON2F
1425 depends on SYS_HAS_CPU_LOONGSON2F
1426 select CPU_LOONGSON2
1429 The Loongson 2F processor implements the MIPS III instruction set
1430 with many extensions.
1432 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1433 have a similar programming interface with FPGA northbridge used in
1436 config CPU_LOONGSON1B
1438 depends on SYS_HAS_CPU_LOONGSON1B
1439 select CPU_LOONGSON1
1440 select LEDS_GPIO_REGISTER
1442 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1443 Release 1 instruction set and part of the MIPS32 Release 2
1446 config CPU_LOONGSON1C
1448 depends on SYS_HAS_CPU_LOONGSON1C
1449 select CPU_LOONGSON1
1450 select LEDS_GPIO_REGISTER
1452 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1453 Release 1 instruction set and part of the MIPS32 Release 2
1456 config CPU_MIPS32_R1
1457 bool "MIPS32 Release 1"
1458 depends on SYS_HAS_CPU_MIPS32_R1
1459 select CPU_HAS_PREFETCH
1460 select CPU_HAS_LOAD_STORE_LR
1461 select CPU_SUPPORTS_32BIT_KERNEL
1462 select CPU_SUPPORTS_HIGHMEM
1464 Choose this option to build a kernel for release 1 or later of the
1465 MIPS32 architecture. Most modern embedded systems with a 32-bit
1466 MIPS processor are based on a MIPS32 processor. If you know the
1467 specific type of processor in your system, choose those that one
1468 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1469 Release 2 of the MIPS32 architecture is available since several
1470 years so chances are you even have a MIPS32 Release 2 processor
1471 in which case you should choose CPU_MIPS32_R2 instead for better
1474 config CPU_MIPS32_R2
1475 bool "MIPS32 Release 2"
1476 depends on SYS_HAS_CPU_MIPS32_R2
1477 select CPU_HAS_PREFETCH
1478 select CPU_HAS_LOAD_STORE_LR
1479 select CPU_SUPPORTS_32BIT_KERNEL
1480 select CPU_SUPPORTS_HIGHMEM
1481 select CPU_SUPPORTS_MSA
1484 Choose this option to build a kernel for release 2 or later of the
1485 MIPS32 architecture. Most modern embedded systems with a 32-bit
1486 MIPS processor are based on a MIPS32 processor. If you know the
1487 specific type of processor in your system, choose those that one
1488 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1490 config CPU_MIPS32_R6
1491 bool "MIPS32 Release 6"
1492 depends on SYS_HAS_CPU_MIPS32_R6
1493 select CPU_HAS_PREFETCH
1494 select CPU_SUPPORTS_32BIT_KERNEL
1495 select CPU_SUPPORTS_HIGHMEM
1496 select CPU_SUPPORTS_MSA
1498 select MIPS_O32_FP64_SUPPORT
1500 Choose this option to build a kernel for release 6 or later of the
1501 MIPS32 architecture. New MIPS processors, starting with the Warrior
1502 family, are based on a MIPS32r6 processor. If you own an older
1503 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1505 config CPU_MIPS64_R1
1506 bool "MIPS64 Release 1"
1507 depends on SYS_HAS_CPU_MIPS64_R1
1508 select CPU_HAS_PREFETCH
1509 select CPU_HAS_LOAD_STORE_LR
1510 select CPU_SUPPORTS_32BIT_KERNEL
1511 select CPU_SUPPORTS_64BIT_KERNEL
1512 select CPU_SUPPORTS_HIGHMEM
1513 select CPU_SUPPORTS_HUGEPAGES
1515 Choose this option to build a kernel for release 1 or later of the
1516 MIPS64 architecture. Many modern embedded systems with a 64-bit
1517 MIPS processor are based on a MIPS64 processor. If you know the
1518 specific type of processor in your system, choose those that one
1519 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1520 Release 2 of the MIPS64 architecture is available since several
1521 years so chances are you even have a MIPS64 Release 2 processor
1522 in which case you should choose CPU_MIPS64_R2 instead for better
1525 config CPU_MIPS64_R2
1526 bool "MIPS64 Release 2"
1527 depends on SYS_HAS_CPU_MIPS64_R2
1528 select CPU_HAS_PREFETCH
1529 select CPU_HAS_LOAD_STORE_LR
1530 select CPU_SUPPORTS_32BIT_KERNEL
1531 select CPU_SUPPORTS_64BIT_KERNEL
1532 select CPU_SUPPORTS_HIGHMEM
1533 select CPU_SUPPORTS_HUGEPAGES
1534 select CPU_SUPPORTS_MSA
1537 Choose this option to build a kernel for release 2 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.
1543 config CPU_MIPS64_R6
1544 bool "MIPS64 Release 6"
1545 depends on SYS_HAS_CPU_MIPS64_R6
1546 select CPU_HAS_PREFETCH
1547 select CPU_SUPPORTS_32BIT_KERNEL
1548 select CPU_SUPPORTS_64BIT_KERNEL
1549 select CPU_SUPPORTS_HIGHMEM
1550 select CPU_SUPPORTS_HUGEPAGES
1551 select CPU_SUPPORTS_MSA
1552 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1555 Choose this option to build a kernel for release 6 or later of the
1556 MIPS64 architecture. New MIPS processors, starting with the Warrior
1557 family, are based on a MIPS64r6 processor. If you own an older
1558 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1562 depends on SYS_HAS_CPU_R3000
1564 select CPU_HAS_LOAD_STORE_LR
1565 select CPU_SUPPORTS_32BIT_KERNEL
1566 select CPU_SUPPORTS_HIGHMEM
1568 Please make sure to pick the right CPU type. Linux/MIPS is not
1569 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1570 *not* work on R4000 machines and vice versa. However, since most
1571 of the supported machines have an R4000 (or similar) CPU, R4x00
1572 might be a safe bet. If the resulting kernel does not work,
1573 try to recompile with R3000.
1577 depends on SYS_HAS_CPU_TX39XX
1578 select CPU_SUPPORTS_32BIT_KERNEL
1579 select CPU_HAS_LOAD_STORE_LR
1583 depends on SYS_HAS_CPU_VR41XX
1584 select CPU_SUPPORTS_32BIT_KERNEL
1585 select CPU_SUPPORTS_64BIT_KERNEL
1586 select CPU_HAS_LOAD_STORE_LR
1588 The options selects support for the NEC VR4100 series of processors.
1589 Only choose this option if you have one of these processors as a
1590 kernel built with this option will not run on any other type of
1591 processor or vice versa.
1595 depends on SYS_HAS_CPU_R4300
1596 select CPU_SUPPORTS_32BIT_KERNEL
1597 select CPU_SUPPORTS_64BIT_KERNEL
1598 select CPU_HAS_LOAD_STORE_LR
1600 MIPS Technologies R4300-series processors.
1604 depends on SYS_HAS_CPU_R4X00
1605 select CPU_SUPPORTS_32BIT_KERNEL
1606 select CPU_SUPPORTS_64BIT_KERNEL
1607 select CPU_SUPPORTS_HUGEPAGES
1608 select CPU_HAS_LOAD_STORE_LR
1610 MIPS Technologies R4000-series processors other than 4300, including
1611 the R4000, R4400, R4600, and 4700.
1615 depends on SYS_HAS_CPU_TX49XX
1616 select CPU_HAS_PREFETCH
1617 select CPU_HAS_LOAD_STORE_LR
1618 select CPU_SUPPORTS_32BIT_KERNEL
1619 select CPU_SUPPORTS_64BIT_KERNEL
1620 select CPU_SUPPORTS_HUGEPAGES
1624 depends on SYS_HAS_CPU_R5000
1625 select CPU_SUPPORTS_32BIT_KERNEL
1626 select CPU_SUPPORTS_64BIT_KERNEL
1627 select CPU_SUPPORTS_HUGEPAGES
1628 select CPU_HAS_LOAD_STORE_LR
1630 MIPS Technologies R5000-series processors other than the Nevada.
1634 depends on SYS_HAS_CPU_R5432
1635 select CPU_SUPPORTS_32BIT_KERNEL
1636 select CPU_SUPPORTS_64BIT_KERNEL
1637 select CPU_SUPPORTS_HUGEPAGES
1638 select CPU_HAS_LOAD_STORE_LR
1642 depends on SYS_HAS_CPU_R5500
1643 select CPU_SUPPORTS_32BIT_KERNEL
1644 select CPU_SUPPORTS_64BIT_KERNEL
1645 select CPU_SUPPORTS_HUGEPAGES
1646 select CPU_HAS_LOAD_STORE_LR
1648 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1653 depends on SYS_HAS_CPU_NEVADA
1654 select CPU_SUPPORTS_32BIT_KERNEL
1655 select CPU_SUPPORTS_64BIT_KERNEL
1656 select CPU_SUPPORTS_HUGEPAGES
1657 select CPU_HAS_LOAD_STORE_LR
1659 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1663 depends on SYS_HAS_CPU_R8000
1664 select CPU_HAS_PREFETCH
1665 select CPU_HAS_LOAD_STORE_LR
1666 select CPU_SUPPORTS_64BIT_KERNEL
1668 MIPS Technologies R8000 processors. Note these processors are
1669 uncommon and the support for them is incomplete.
1673 depends on SYS_HAS_CPU_R10000
1674 select CPU_HAS_PREFETCH
1675 select CPU_HAS_LOAD_STORE_LR
1676 select CPU_SUPPORTS_32BIT_KERNEL
1677 select CPU_SUPPORTS_64BIT_KERNEL
1678 select CPU_SUPPORTS_HIGHMEM
1679 select CPU_SUPPORTS_HUGEPAGES
1681 MIPS Technologies R10000-series processors.
1685 depends on SYS_HAS_CPU_RM7000
1686 select CPU_HAS_PREFETCH
1687 select CPU_HAS_LOAD_STORE_LR
1688 select CPU_SUPPORTS_32BIT_KERNEL
1689 select CPU_SUPPORTS_64BIT_KERNEL
1690 select CPU_SUPPORTS_HIGHMEM
1691 select CPU_SUPPORTS_HUGEPAGES
1695 depends on SYS_HAS_CPU_SB1
1696 select CPU_HAS_LOAD_STORE_LR
1697 select CPU_SUPPORTS_32BIT_KERNEL
1698 select CPU_SUPPORTS_64BIT_KERNEL
1699 select CPU_SUPPORTS_HIGHMEM
1700 select CPU_SUPPORTS_HUGEPAGES
1701 select WEAK_ORDERING
1703 config CPU_CAVIUM_OCTEON
1704 bool "Cavium Octeon processor"
1705 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1706 select CPU_HAS_PREFETCH
1707 select CPU_HAS_LOAD_STORE_LR
1708 select CPU_SUPPORTS_64BIT_KERNEL
1709 select WEAK_ORDERING
1710 select CPU_SUPPORTS_HIGHMEM
1711 select CPU_SUPPORTS_HUGEPAGES
1712 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1713 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1714 select MIPS_L1_CACHE_SHIFT_7
1717 The Cavium Octeon processor is a highly integrated chip containing
1718 many ethernet hardware widgets for networking tasks. The processor
1719 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1720 Full details can be found at http://www.caviumnetworks.com.
1723 bool "Broadcom BMIPS"
1724 depends on SYS_HAS_CPU_BMIPS
1726 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1727 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1728 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1729 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1730 select CPU_SUPPORTS_32BIT_KERNEL
1731 select DMA_NONCOHERENT
1733 select SWAP_IO_SPACE
1734 select WEAK_ORDERING
1735 select CPU_SUPPORTS_HIGHMEM
1736 select CPU_HAS_PREFETCH
1737 select CPU_HAS_LOAD_STORE_LR
1738 select CPU_SUPPORTS_CPUFREQ
1739 select MIPS_EXTERNAL_TIMER
1741 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1744 bool "Netlogic XLR SoC"
1745 depends on SYS_HAS_CPU_XLR
1746 select CPU_HAS_LOAD_STORE_LR
1747 select CPU_SUPPORTS_32BIT_KERNEL
1748 select CPU_SUPPORTS_64BIT_KERNEL
1749 select CPU_SUPPORTS_HIGHMEM
1750 select CPU_SUPPORTS_HUGEPAGES
1751 select WEAK_ORDERING
1752 select WEAK_REORDERING_BEYOND_LLSC
1754 Netlogic Microsystems XLR/XLS processors.
1757 bool "Netlogic XLP SoC"
1758 depends on SYS_HAS_CPU_XLP
1759 select CPU_SUPPORTS_32BIT_KERNEL
1760 select CPU_SUPPORTS_64BIT_KERNEL
1761 select CPU_SUPPORTS_HIGHMEM
1762 select WEAK_ORDERING
1763 select WEAK_REORDERING_BEYOND_LLSC
1764 select CPU_HAS_PREFETCH
1765 select CPU_HAS_LOAD_STORE_LR
1767 select CPU_SUPPORTS_HUGEPAGES
1768 select MIPS_ASID_BITS_VARIABLE
1770 Netlogic Microsystems XLP processors.
1773 config CPU_MIPS32_3_5_FEATURES
1774 bool "MIPS32 Release 3.5 Features"
1775 depends on SYS_HAS_CPU_MIPS32_R3_5
1776 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1778 Choose this option to build a kernel for release 2 or later of the
1779 MIPS32 architecture including features from the 3.5 release such as
1780 support for Enhanced Virtual Addressing (EVA).
1782 config CPU_MIPS32_3_5_EVA
1783 bool "Enhanced Virtual Addressing (EVA)"
1784 depends on CPU_MIPS32_3_5_FEATURES
1788 Choose this option if you want to enable the Enhanced Virtual
1789 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1790 One of its primary benefits is an increase in the maximum size
1791 of lowmem (up to 3GB). If unsure, say 'N' here.
1793 config CPU_MIPS32_R5_FEATURES
1794 bool "MIPS32 Release 5 Features"
1795 depends on SYS_HAS_CPU_MIPS32_R5
1796 depends on CPU_MIPS32_R2
1798 Choose this option to build a kernel for release 2 or later of the
1799 MIPS32 architecture including features from release 5 such as
1800 support for Extended Physical Addressing (XPA).
1802 config CPU_MIPS32_R5_XPA
1803 bool "Extended Physical Addressing (XPA)"
1804 depends on CPU_MIPS32_R5_FEATURES
1806 depends on !PAGE_SIZE_4KB
1807 depends on SYS_SUPPORTS_HIGHMEM
1810 select PHYS_ADDR_T_64BIT
1813 Choose this option if you want to enable the Extended Physical
1814 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1815 benefit is to increase physical addressing equal to or greater
1816 than 40 bits. Note that this has the side effect of turning on
1817 64-bit addressing which in turn makes the PTEs 64-bit in size.
1818 If unsure, say 'N' here.
1821 config CPU_NOP_WORKAROUNDS
1824 config CPU_JUMP_WORKAROUNDS
1827 config CPU_LOONGSON2F_WORKAROUNDS
1828 bool "Loongson 2F Workarounds"
1830 select CPU_NOP_WORKAROUNDS
1831 select CPU_JUMP_WORKAROUNDS
1833 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1834 require workarounds. Without workarounds the system may hang
1835 unexpectedly. For more information please refer to the gas
1836 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1838 Loongson 2F03 and later have fixed these issues and no workarounds
1839 are needed. The workarounds have no significant side effect on them
1840 but may decrease the performance of the system so this option should
1841 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1844 If unsure, please say Y.
1845 endif # CPU_LOONGSON2F
1847 config SYS_SUPPORTS_ZBOOT
1849 select HAVE_KERNEL_GZIP
1850 select HAVE_KERNEL_BZIP2
1851 select HAVE_KERNEL_LZ4
1852 select HAVE_KERNEL_LZMA
1853 select HAVE_KERNEL_LZO
1854 select HAVE_KERNEL_XZ
1856 config SYS_SUPPORTS_ZBOOT_UART16550
1858 select SYS_SUPPORTS_ZBOOT
1860 config SYS_SUPPORTS_ZBOOT_UART_PROM
1862 select SYS_SUPPORTS_ZBOOT
1864 config CPU_LOONGSON2
1866 select CPU_SUPPORTS_32BIT_KERNEL
1867 select CPU_SUPPORTS_64BIT_KERNEL
1868 select CPU_SUPPORTS_HIGHMEM
1869 select CPU_SUPPORTS_HUGEPAGES
1870 select ARCH_HAS_PHYS_TO_DMA
1871 select CPU_HAS_LOAD_STORE_LR
1873 config CPU_LOONGSON1
1877 select CPU_HAS_PREFETCH
1878 select CPU_HAS_LOAD_STORE_LR
1879 select CPU_SUPPORTS_32BIT_KERNEL
1880 select CPU_SUPPORTS_HIGHMEM
1881 select CPU_SUPPORTS_CPUFREQ
1883 config CPU_BMIPS32_3300
1884 select SMP_UP if SMP
1887 config CPU_BMIPS4350
1889 select SYS_SUPPORTS_SMP
1890 select SYS_SUPPORTS_HOTPLUG_CPU
1892 config CPU_BMIPS4380
1894 select MIPS_L1_CACHE_SHIFT_6
1895 select SYS_SUPPORTS_SMP
1896 select SYS_SUPPORTS_HOTPLUG_CPU
1899 config CPU_BMIPS5000
1901 select MIPS_CPU_SCACHE
1902 select MIPS_L1_CACHE_SHIFT_7
1903 select SYS_SUPPORTS_SMP
1904 select SYS_SUPPORTS_HOTPLUG_CPU
1907 config SYS_HAS_CPU_LOONGSON3
1909 select CPU_SUPPORTS_CPUFREQ
1912 config SYS_HAS_CPU_LOONGSON2E
1915 config SYS_HAS_CPU_LOONGSON2F
1917 select CPU_SUPPORTS_CPUFREQ
1918 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1919 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1921 config SYS_HAS_CPU_LOONGSON1B
1924 config SYS_HAS_CPU_LOONGSON1C
1927 config SYS_HAS_CPU_MIPS32_R1
1930 config SYS_HAS_CPU_MIPS32_R2
1933 config SYS_HAS_CPU_MIPS32_R3_5
1936 config SYS_HAS_CPU_MIPS32_R5
1938 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1940 config SYS_HAS_CPU_MIPS32_R6
1942 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1944 config SYS_HAS_CPU_MIPS64_R1
1947 config SYS_HAS_CPU_MIPS64_R2
1950 config SYS_HAS_CPU_MIPS64_R6
1952 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1954 config SYS_HAS_CPU_R3000
1957 config SYS_HAS_CPU_TX39XX
1960 config SYS_HAS_CPU_VR41XX
1963 config SYS_HAS_CPU_R4300
1966 config SYS_HAS_CPU_R4X00
1969 config SYS_HAS_CPU_TX49XX
1972 config SYS_HAS_CPU_R5000
1975 config SYS_HAS_CPU_R5432
1978 config SYS_HAS_CPU_R5500
1981 config SYS_HAS_CPU_NEVADA
1984 config SYS_HAS_CPU_R8000
1987 config SYS_HAS_CPU_R10000
1989 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1991 config SYS_HAS_CPU_RM7000
1994 config SYS_HAS_CPU_SB1
1997 config SYS_HAS_CPU_CAVIUM_OCTEON
2000 config SYS_HAS_CPU_BMIPS
2003 config SYS_HAS_CPU_BMIPS32_3300
2005 select SYS_HAS_CPU_BMIPS
2007 config SYS_HAS_CPU_BMIPS4350
2009 select SYS_HAS_CPU_BMIPS
2011 config SYS_HAS_CPU_BMIPS4380
2013 select SYS_HAS_CPU_BMIPS
2015 config SYS_HAS_CPU_BMIPS5000
2017 select SYS_HAS_CPU_BMIPS
2018 select ARCH_HAS_SYNC_DMA_FOR_CPU
2020 config SYS_HAS_CPU_XLR
2023 config SYS_HAS_CPU_XLP
2027 # CPU may reorder R->R, R->W, W->R, W->W
2028 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2030 config WEAK_ORDERING
2034 # CPU may reorder reads and writes beyond LL/SC
2035 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2037 config WEAK_REORDERING_BEYOND_LLSC
2042 # These two indicate any level of the MIPS32 and MIPS64 architecture
2046 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2050 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2053 # These indicate the revision of the architecture
2057 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2061 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2067 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2069 select HAVE_ARCH_BITREVERSE
2070 select MIPS_ASID_BITS_VARIABLE
2071 select MIPS_CRC_SUPPORT
2074 config TARGET_ISA_REV
2076 default 1 if CPU_MIPSR1
2077 default 2 if CPU_MIPSR2
2078 default 6 if CPU_MIPSR6
2081 Reflects the ISA revision being targeted by the kernel build. This
2082 is effectively the Kconfig equivalent of MIPS_ISA_REV.
2090 config SYS_SUPPORTS_32BIT_KERNEL
2092 config SYS_SUPPORTS_64BIT_KERNEL
2094 config CPU_SUPPORTS_32BIT_KERNEL
2096 config CPU_SUPPORTS_64BIT_KERNEL
2098 config CPU_SUPPORTS_CPUFREQ
2100 config CPU_SUPPORTS_ADDRWINCFG
2102 config CPU_SUPPORTS_HUGEPAGES
2104 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2106 config MIPS_PGD_C0_CONTEXT
2108 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2111 # Set to y for ptrace access to watch registers.
2113 config HARDWARE_WATCHPOINTS
2115 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2120 prompt "Kernel code model"
2122 You should only select this option if you have a workload that
2123 actually benefits from 64-bit processing or if your machine has
2124 large memory. You will only be presented a single option in this
2125 menu if your system does not support both 32-bit and 64-bit kernels.
2128 bool "32-bit kernel"
2129 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2132 Select this option if you want to build a 32-bit kernel.
2135 bool "64-bit kernel"
2136 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2138 Select this option if you want to build a 64-bit kernel.
2143 bool "KVM Guest Kernel"
2144 depends on BROKEN_ON_SMP
2146 Select this option if building a guest kernel for KVM (Trap & Emulate)
2149 config KVM_GUEST_TIMER_FREQ
2150 int "Count/Compare Timer Frequency (MHz)"
2151 depends on KVM_GUEST
2154 Set this to non-zero if building a guest kernel for KVM to skip RTC
2155 emulation when determining guest CPU Frequency. Instead, the guest's
2156 timer frequency is specified directly.
2158 config MIPS_VA_BITS_48
2159 bool "48 bits virtual memory"
2162 Support a maximum at least 48 bits of application virtual
2163 memory. Default is 40 bits or less, depending on the CPU.
2164 For page sizes 16k and above, this option results in a small
2165 memory overhead for page tables. For 4k page size, a fourth
2166 level of page tables is added which imposes both a memory
2167 overhead as well as slower TLB fault handling.
2172 prompt "Kernel page size"
2173 default PAGE_SIZE_4KB
2175 config PAGE_SIZE_4KB
2177 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2179 This option select the standard 4kB Linux page size. On some
2180 R3000-family processors this is the only available page size. Using
2181 4kB page size will minimize memory consumption and is therefore
2182 recommended for low memory systems.
2184 config PAGE_SIZE_8KB
2186 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2187 depends on !MIPS_VA_BITS_48
2189 Using 8kB page size will result in higher performance kernel at
2190 the price of higher memory consumption. This option is available
2191 only on R8000 and cnMIPS processors. Note that you will need a
2192 suitable Linux distribution to support this.
2194 config PAGE_SIZE_16KB
2196 depends on !CPU_R3000 && !CPU_TX39XX
2198 Using 16kB page size will result in higher performance kernel at
2199 the price of higher memory consumption. This option is available on
2200 all non-R3000 family processors. Note that you will need a suitable
2201 Linux distribution to support this.
2203 config PAGE_SIZE_32KB
2205 depends on CPU_CAVIUM_OCTEON
2206 depends on !MIPS_VA_BITS_48
2208 Using 32kB page size will result in higher performance kernel at
2209 the price of higher memory consumption. This option is available
2210 only on cnMIPS cores. Note that you will need a suitable Linux
2211 distribution to support this.
2213 config PAGE_SIZE_64KB
2215 depends on !CPU_R3000 && !CPU_TX39XX
2217 Using 64kB page size will result in higher performance kernel at
2218 the price of higher memory consumption. This option is available on
2219 all non-R3000 family processor. Not that at the time of this
2220 writing this option is still high experimental.
2224 config FORCE_MAX_ZONEORDER
2225 int "Maximum zone order"
2226 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2227 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2228 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2229 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2230 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2231 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2235 The kernel memory allocator divides physically contiguous memory
2236 blocks into "zones", where each zone is a power of two number of
2237 pages. This option selects the largest power of two that the kernel
2238 keeps in the memory allocator. If you need to allocate very large
2239 blocks of physically contiguous memory, then you may need to
2240 increase this value.
2242 This config option is actually maximum order plus one. For example,
2243 a value of 11 means that the largest free memory block is 2^10 pages.
2245 The page size is not necessarily 4KB. Keep this in mind
2246 when choosing a value for this option.
2251 config IP22_CPU_SCACHE
2256 # Support for a MIPS32 / MIPS64 style S-caches
2258 config MIPS_CPU_SCACHE
2262 config R5000_CPU_SCACHE
2266 config RM7000_CPU_SCACHE
2270 config SIBYTE_DMA_PAGEOPS
2271 bool "Use DMA to clear/copy pages"
2274 Instead of using the CPU to zero and copy pages, use a Data Mover
2275 channel. These DMA channels are otherwise unused by the standard
2276 SiByte Linux port. Seems to give a small performance benefit.
2278 config CPU_HAS_PREFETCH
2281 config CPU_GENERIC_DUMP_TLB
2283 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
2285 config MIPS_FP_SUPPORT
2286 bool "Floating Point support" if EXPERT
2289 Select y to include support for floating point in the kernel
2290 including initialization of FPU hardware, FP context save & restore
2291 and emulation of an FPU where necessary. Without this support any
2292 userland program attempting to use floating point instructions will
2295 If you know that your userland will not attempt to use floating point
2296 instructions then you can say n here to shrink the kernel a little.
2300 config CPU_R2300_FPU
2302 depends on MIPS_FP_SUPPORT
2303 default y if CPU_R3000 || CPU_TX39XX
2307 depends on MIPS_FP_SUPPORT
2308 default y if !CPU_R2300_FPU
2310 config CPU_R4K_CACHE_TLB
2312 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2315 bool "MIPS MT SMP support (1 TC on each available VPE)"
2317 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2318 select CPU_MIPSR2_IRQ_VI
2319 select CPU_MIPSR2_IRQ_EI
2324 select SYS_SUPPORTS_SMP
2325 select SYS_SUPPORTS_SCHED_SMT
2326 select MIPS_PERF_SHARED_TC_COUNTERS
2328 This is a kernel model which is known as SMVP. This is supported
2329 on cores with the MT ASE and uses the available VPEs to implement
2330 virtual processors which supports SMP. This is equivalent to the
2331 Intel Hyperthreading feature. For further information go to
2332 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2338 bool "SMT (multithreading) scheduler support"
2339 depends on SYS_SUPPORTS_SCHED_SMT
2342 SMT scheduler support improves the CPU scheduler's decision making
2343 when dealing with MIPS MT enabled cores at a cost of slightly
2344 increased overhead in some places. If unsure say N here.
2346 config SYS_SUPPORTS_SCHED_SMT
2349 config SYS_SUPPORTS_MULTITHREADING
2352 config MIPS_MT_FPAFF
2353 bool "Dynamic FPU affinity for FP-intensive threads"
2355 depends on MIPS_MT_SMP
2357 config MIPSR2_TO_R6_EMULATOR
2358 bool "MIPS R2-to-R6 emulator"
2359 depends on CPU_MIPSR6
2360 depends on MIPS_FP_SUPPORT
2363 Choose this option if you want to run non-R6 MIPS userland code.
2364 Even if you say 'Y' here, the emulator will still be disabled by
2365 default. You can enable it using the 'mipsr2emu' kernel option.
2366 The only reason this is a build-time option is to save ~14K from the
2369 config SYS_SUPPORTS_VPE_LOADER
2371 depends on SYS_SUPPORTS_MULTITHREADING
2373 Indicates that the platform supports the VPE loader, and provides
2376 config MIPS_VPE_LOADER
2377 bool "VPE loader support."
2378 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2379 select CPU_MIPSR2_IRQ_VI
2380 select CPU_MIPSR2_IRQ_EI
2383 Includes a loader for loading an elf relocatable object
2384 onto another VPE and running it.
2386 config MIPS_VPE_LOADER_CMP
2389 depends on MIPS_VPE_LOADER && MIPS_CMP
2391 config MIPS_VPE_LOADER_MT
2394 depends on MIPS_VPE_LOADER && !MIPS_CMP
2396 config MIPS_VPE_LOADER_TOM
2397 bool "Load VPE program into memory hidden from linux"
2398 depends on MIPS_VPE_LOADER
2401 The loader can use memory that is present but has been hidden from
2402 Linux using the kernel command line option "mem=xxMB". It's up to
2403 you to ensure the amount you put in the option and the space your
2404 program requires is less or equal to the amount physically present.
2406 config MIPS_VPE_APSP_API
2407 bool "Enable support for AP/SP API (RTLX)"
2408 depends on MIPS_VPE_LOADER
2410 config MIPS_VPE_APSP_API_CMP
2413 depends on MIPS_VPE_APSP_API && MIPS_CMP
2415 config MIPS_VPE_APSP_API_MT
2418 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2421 bool "MIPS CMP framework support (DEPRECATED)"
2422 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2425 select SYS_SUPPORTS_SMP
2426 select WEAK_ORDERING
2429 Select this if you are using a bootloader which implements the "CMP
2430 framework" protocol (ie. YAMON) and want your kernel to make use of
2431 its ability to start secondary CPUs.
2433 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2437 bool "MIPS Coherent Processing System support"
2438 depends on SYS_SUPPORTS_MIPS_CPS
2440 select MIPS_CPS_PM if HOTPLUG_CPU
2442 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2443 select SYS_SUPPORTS_HOTPLUG_CPU
2444 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2445 select SYS_SUPPORTS_SMP
2446 select WEAK_ORDERING
2448 Select this if you wish to run an SMP kernel across multiple cores
2449 within a MIPS Coherent Processing System. When this option is
2450 enabled the kernel will probe for other cores and boot them with
2451 no external assistance. It is safe to enable this when hardware
2452 support is unavailable.
2465 config SB1_PASS_2_WORKAROUNDS
2467 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2470 config SB1_PASS_2_1_WORKAROUNDS
2472 depends on CPU_SB1 && CPU_SB1_PASS_2
2476 prompt "SmartMIPS or microMIPS ASE support"
2478 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2481 Select this if you want neither microMIPS nor SmartMIPS support
2483 config CPU_HAS_SMARTMIPS
2484 depends on SYS_SUPPORTS_SMARTMIPS
2487 SmartMIPS is a extension of the MIPS32 architecture aimed at
2488 increased security at both hardware and software level for
2489 smartcards. Enabling this option will allow proper use of the
2490 SmartMIPS instructions by Linux applications. However a kernel with
2491 this option will not work on a MIPS core without SmartMIPS core. If
2492 you don't know you probably don't have SmartMIPS and should say N
2495 config CPU_MICROMIPS
2496 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2499 When this option is enabled the kernel will be built using the
2505 bool "Support for the MIPS SIMD Architecture"
2506 depends on CPU_SUPPORTS_MSA
2507 depends on MIPS_FP_SUPPORT
2508 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2510 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2511 and a set of SIMD instructions to operate on them. When this option
2512 is enabled the kernel will support allocating & switching MSA
2513 vector register contexts. If you know that your kernel will only be
2514 running on CPUs which do not support MSA or that your userland will
2515 not be making use of it then you may wish to say N here to reduce
2516 the size & complexity of your kernel.
2529 config CPU_HAS_LOAD_STORE_LR
2532 CPU has support for unaligned load and store instructions:
2533 LWL, LWR, SWL, SWR (Load/store word left/right).
2534 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit systems).
2537 # Vectored interrupt mode is an R2 feature
2539 config CPU_MIPSR2_IRQ_VI
2543 # Extended interrupt mode is an R2 feature
2545 config CPU_MIPSR2_IRQ_EI
2550 depends on !CPU_R3000
2556 config CPU_DADDI_WORKAROUNDS
2559 config CPU_R4000_WORKAROUNDS
2561 select CPU_R4400_WORKAROUNDS
2563 config CPU_R4400_WORKAROUNDS
2566 config MIPS_ASID_SHIFT
2568 default 6 if CPU_R3000 || CPU_TX39XX
2569 default 4 if CPU_R8000
2572 config MIPS_ASID_BITS
2574 default 0 if MIPS_ASID_BITS_VARIABLE
2575 default 6 if CPU_R3000 || CPU_TX39XX
2578 config MIPS_ASID_BITS_VARIABLE
2581 config MIPS_CRC_SUPPORT
2585 # - Highmem only makes sense for the 32-bit kernel.
2586 # - The current highmem code will only work properly on physically indexed
2587 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2588 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2589 # moment we protect the user and offer the highmem option only on machines
2590 # where it's known to be safe. This will not offer highmem on a few systems
2591 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2592 # indexed CPUs but we're playing safe.
2593 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2594 # know they might have memory configurations that could make use of highmem
2598 bool "High Memory Support"
2599 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2601 config CPU_SUPPORTS_HIGHMEM
2604 config SYS_SUPPORTS_HIGHMEM
2607 config SYS_SUPPORTS_SMARTMIPS
2610 config SYS_SUPPORTS_MICROMIPS
2613 config SYS_SUPPORTS_MIPS16
2616 This option must be set if a kernel might be executed on a MIPS16-
2617 enabled CPU even if MIPS16 is not actually being used. In other
2618 words, it makes the kernel MIPS16-tolerant.
2620 config CPU_SUPPORTS_MSA
2623 config ARCH_FLATMEM_ENABLE
2625 depends on !NUMA && !CPU_LOONGSON2
2627 config ARCH_DISCONTIGMEM_ENABLE
2629 default y if SGI_IP27
2631 Say Y to support efficient handling of discontiguous physical memory,
2632 for architectures which are either NUMA (Non-Uniform Memory Access)
2633 or have huge holes in the physical address space for other reasons.
2634 See <file:Documentation/vm/numa.rst> for more.
2636 config ARCH_SPARSEMEM_ENABLE
2638 select SPARSEMEM_STATIC
2642 depends on SYS_SUPPORTS_NUMA
2644 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2645 Access). This option improves performance on systems with more
2646 than two nodes; on two node systems it is generally better to
2647 leave it disabled; on single node systems disable this option
2650 config SYS_SUPPORTS_NUMA
2654 bool "Relocatable kernel"
2655 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2657 This builds a kernel image that retains relocation information
2658 so it can be loaded someplace besides the default 1MB.
2659 The relocations make the kernel binary about 15% larger,
2660 but are discarded at runtime
2662 config RELOCATION_TABLE_SIZE
2663 hex "Relocation table size"
2664 depends on RELOCATABLE
2665 range 0x0 0x01000000
2666 default "0x00100000"
2668 A table of relocation data will be appended to the kernel binary
2669 and parsed at boot to fix up the relocated kernel.
2671 This option allows the amount of space reserved for the table to be
2672 adjusted, although the default of 1Mb should be ok in most cases.
2674 The build will fail and a valid size suggested if this is too small.
2676 If unsure, leave at the default value.
2678 config RANDOMIZE_BASE
2679 bool "Randomize the address of the kernel image"
2680 depends on RELOCATABLE
2682 Randomizes the physical and virtual address at which the
2683 kernel image is loaded, as a security feature that
2684 deters exploit attempts relying on knowledge of the location
2685 of kernel internals.
2687 Entropy is generated using any coprocessor 0 registers available.
2689 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2693 config RANDOMIZE_BASE_MAX_OFFSET
2694 hex "Maximum kASLR offset" if EXPERT
2695 depends on RANDOMIZE_BASE
2696 range 0x0 0x40000000 if EVA || 64BIT
2697 range 0x0 0x08000000
2698 default "0x01000000"
2700 When kASLR is active, this provides the maximum offset that will
2701 be applied to the kernel image. It should be set according to the
2702 amount of physical RAM available in the target system minus
2703 PHYSICAL_START and must be a power of 2.
2705 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2706 EVA or 64-bit. The default is 16Mb.
2711 depends on NEED_MULTIPLE_NODES
2713 config HW_PERF_EVENTS
2714 bool "Enable hardware performance counter support for perf events"
2715 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2718 Enable hardware performance counter support for perf events. If
2719 disabled, perf events will use software events only.
2722 bool "Multi-Processing support"
2723 depends on SYS_SUPPORTS_SMP
2725 This enables support for systems with more than one CPU. If you have
2726 a system with only one CPU, say N. If you have a system with more
2727 than one CPU, say Y.
2729 If you say N here, the kernel will run on uni- and multiprocessor
2730 machines, but will use only one CPU of a multiprocessor machine. If
2731 you say Y here, the kernel will run on many, but not all,
2732 uniprocessor machines. On a uniprocessor machine, the kernel
2733 will run faster if you say N here.
2735 People using multiprocessor machines who say Y here should also say
2736 Y to "Enhanced Real Time Clock Support", below.
2738 See also the SMP-HOWTO available at
2739 <http://www.tldp.org/docs.html#howto>.
2741 If you don't know what to do here, say N.
2744 bool "Support for hot-pluggable CPUs"
2745 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2747 Say Y here to allow turning CPUs off and on. CPUs can be
2748 controlled through /sys/devices/system/cpu.
2749 (Note: power management support will enable this option
2750 automatically on SMP systems. )
2751 Say N if you want to disable CPU hotplug.
2756 config SYS_SUPPORTS_MIPS_CMP
2759 config SYS_SUPPORTS_MIPS_CPS
2762 config SYS_SUPPORTS_SMP
2765 config NR_CPUS_DEFAULT_4
2768 config NR_CPUS_DEFAULT_8
2771 config NR_CPUS_DEFAULT_16
2774 config NR_CPUS_DEFAULT_32
2777 config NR_CPUS_DEFAULT_64
2781 int "Maximum number of CPUs (2-256)"
2784 default "4" if NR_CPUS_DEFAULT_4
2785 default "8" if NR_CPUS_DEFAULT_8
2786 default "16" if NR_CPUS_DEFAULT_16
2787 default "32" if NR_CPUS_DEFAULT_32
2788 default "64" if NR_CPUS_DEFAULT_64
2790 This allows you to specify the maximum number of CPUs which this
2791 kernel will support. The maximum supported value is 32 for 32-bit
2792 kernel and 64 for 64-bit kernels; the minimum value which makes
2793 sense is 1 for Qemu (useful only for kernel debugging purposes)
2794 and 2 for all others.
2796 This is purely to save memory - each supported CPU adds
2797 approximately eight kilobytes to the kernel image. For best
2798 performance should round up your number of processors to the next
2801 config MIPS_PERF_SHARED_TC_COUNTERS
2804 config MIPS_NR_CPU_NR_MAP_1024
2807 config MIPS_NR_CPU_NR_MAP
2810 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2811 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2814 # Timer Interrupt Frequency Configuration
2818 prompt "Timer frequency"
2821 Allows the configuration of the timer frequency.
2824 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2827 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2830 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2833 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2836 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2839 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2842 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2845 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2849 config SYS_SUPPORTS_24HZ
2852 config SYS_SUPPORTS_48HZ
2855 config SYS_SUPPORTS_100HZ
2858 config SYS_SUPPORTS_128HZ
2861 config SYS_SUPPORTS_250HZ
2864 config SYS_SUPPORTS_256HZ
2867 config SYS_SUPPORTS_1000HZ
2870 config SYS_SUPPORTS_1024HZ
2873 config SYS_SUPPORTS_ARBIT_HZ
2875 default y if !SYS_SUPPORTS_24HZ && \
2876 !SYS_SUPPORTS_48HZ && \
2877 !SYS_SUPPORTS_100HZ && \
2878 !SYS_SUPPORTS_128HZ && \
2879 !SYS_SUPPORTS_250HZ && \
2880 !SYS_SUPPORTS_256HZ && \
2881 !SYS_SUPPORTS_1000HZ && \
2882 !SYS_SUPPORTS_1024HZ
2888 default 100 if HZ_100
2889 default 128 if HZ_128
2890 default 250 if HZ_250
2891 default 256 if HZ_256
2892 default 1000 if HZ_1000
2893 default 1024 if HZ_1024
2896 def_bool HIGH_RES_TIMERS
2899 bool "Kexec system call"
2902 kexec is a system call that implements the ability to shutdown your
2903 current kernel, and to start another kernel. It is like a reboot
2904 but it is independent of the system firmware. And like a reboot
2905 you can start any kernel with it, not just Linux.
2907 The name comes from the similarity to the exec system call.
2909 It is an ongoing process to be certain the hardware in a machine
2910 is properly shutdown, so do not be surprised if this code does not
2911 initially work for you. As of this writing the exact hardware
2912 interface is strongly in flux, so no good recommendation can be
2916 bool "Kernel crash dumps"
2918 Generate crash dump after being started by kexec.
2919 This should be normally only set in special crash dump kernels
2920 which are loaded in the main kernel with kexec-tools into
2921 a specially reserved region and then later executed after
2922 a crash by kdump/kexec. The crash dump kernel must be compiled
2923 to a memory address not used by the main kernel or firmware using
2926 config PHYSICAL_START
2927 hex "Physical address where the kernel is loaded"
2928 default "0xffffffff84000000"
2929 depends on CRASH_DUMP
2931 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2932 If you plan to use kernel for capturing the crash dump change
2933 this value to start of the reserved region (the "X" value as
2934 specified in the "crashkernel=YM@XM" command line boot parameter
2935 passed to the panic-ed kernel).
2938 bool "Enable seccomp to safely compute untrusted bytecode"
2942 This kernel feature is useful for number crunching applications
2943 that may need to compute untrusted bytecode during their
2944 execution. By using pipes or other transports made available to
2945 the process as file descriptors supporting the read/write
2946 syscalls, it's possible to isolate those applications in
2947 their own address space using seccomp. Once seccomp is
2948 enabled via /proc/<pid>/seccomp, it cannot be disabled
2949 and the task is only allowed to execute a few safe syscalls
2950 defined by each seccomp mode.
2952 If unsure, say Y. Only embedded should say N here.
2954 config MIPS_O32_FP64_SUPPORT
2955 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
2956 depends on 32BIT || MIPS32_O32
2958 When this is enabled, the kernel will support use of 64-bit floating
2959 point registers with binaries using the O32 ABI along with the
2960 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2961 32-bit MIPS systems this support is at the cost of increasing the
2962 size and complexity of the compiled FPU emulator. Thus if you are
2963 running a MIPS32 system and know that none of your userland binaries
2964 will require 64-bit floating point, you may wish to reduce the size
2965 of your kernel & potentially improve FP emulation performance by
2968 Although binutils currently supports use of this flag the details
2969 concerning its effect upon the O32 ABI in userland are still being
2970 worked on. In order to avoid userland becoming dependant upon current
2971 behaviour before the details have been finalised, this option should
2972 be considered experimental and only enabled by those working upon
2980 select OF_EARLY_FLATTREE
2990 prompt "Kernel appended dtb support" if USE_OF
2991 default MIPS_NO_APPENDED_DTB
2993 config MIPS_NO_APPENDED_DTB
2996 Do not enable appended dtb support.
2998 config MIPS_ELF_APPENDED_DTB
3001 With this option, the boot code will look for a device tree binary
3002 DTB) included in the vmlinux ELF section .appended_dtb. By default
3003 it is empty and the DTB can be appended using binutils command
3006 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
3008 This is meant as a backward compatiblity 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 config MIPS_RAW_APPENDED_DTB
3013 bool "vmlinux.bin or vmlinuz.bin"
3015 With this option, the boot code will look for a device tree binary
3016 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
3017 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
3019 This is meant as a backward compatibility convenience for those
3020 systems with a bootloader that can't be upgraded to accommodate
3021 the documented boot protocol using a device tree.
3023 Beware that there is very little in terms of protection against
3024 this option being confused by leftover garbage in memory that might
3025 look like a DTB header after a reboot if no actual DTB is appended
3026 to vmlinux.bin. Do not leave this option active in a production kernel
3027 if you don't intend to always append a DTB.
3031 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
3032 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
3035 default MIPS_CMDLINE_FROM_BOOTLOADER
3037 config MIPS_CMDLINE_FROM_DTB
3039 bool "Dtb kernel arguments if available"
3041 config MIPS_CMDLINE_DTB_EXTEND
3043 bool "Extend dtb kernel arguments with bootloader arguments"
3045 config MIPS_CMDLINE_FROM_BOOTLOADER
3046 bool "Bootloader kernel arguments if available"
3048 config MIPS_CMDLINE_BUILTIN_EXTEND
3049 depends on CMDLINE_BOOL
3050 bool "Extend builtin kernel arguments with bootloader arguments"
3055 config LOCKDEP_SUPPORT
3059 config STACKTRACE_SUPPORT
3063 config HAVE_LATENCYTOP_SUPPORT
3067 config PGTABLE_LEVELS
3069 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3070 default 3 if 64BIT && !PAGE_SIZE_64KB
3073 config MIPS_AUTO_PFN_OFFSET
3076 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3078 config PCI_DRIVERS_GENERIC
3079 select PCI_DOMAINS_GENERIC if PCI
3082 config PCI_DRIVERS_LEGACY
3083 def_bool !PCI_DRIVERS_GENERIC
3084 select NO_GENERIC_PCI_IOPORT_MAP
3085 select PCI_DOMAINS if PCI
3088 # ISA support is now enabled via select. Too many systems still have the one
3089 # or other ISA chip on the board that users don't know about so don't expect
3090 # users to choose the right thing ...
3096 bool "TURBOchannel support"
3097 depends on MACH_DECSTATION
3099 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3100 processors. TURBOchannel programming specifications are available
3102 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3104 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3105 Linux driver support status is documented at:
3106 <http://www.linux-mips.org/wiki/DECstation>
3112 config ARCH_MMAP_RND_BITS_MIN
3116 config ARCH_MMAP_RND_BITS_MAX
3120 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3123 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3130 select MIPS_EXTERNAL_TIMER
3143 config MIPS32_COMPAT
3149 config SYSVIPC_COMPAT
3153 bool "Kernel support for o32 binaries"
3155 select ARCH_WANT_OLD_COMPAT_IPC
3157 select MIPS32_COMPAT
3158 select SYSVIPC_COMPAT if SYSVIPC
3160 Select this option if you want to run o32 binaries. These are pure
3161 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3162 existing binaries are in this format.
3167 bool "Kernel support for n32 binaries"
3169 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3171 select MIPS32_COMPAT
3172 select SYSVIPC_COMPAT if SYSVIPC
3174 Select this option if you want to run n32 binaries. These are
3175 64-bit binaries using 32-bit quantities for addressing and certain
3176 data that would normally be 64-bit. They are used in special
3183 default y if MIPS32_O32 || MIPS32_N32
3186 menu "Power management options"
3188 config ARCH_HIBERNATION_POSSIBLE
3190 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3192 config ARCH_SUSPEND_POSSIBLE
3194 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3196 source "kernel/power/Kconfig"
3200 config MIPS_EXTERNAL_TIMER
3203 menu "CPU Power Management"
3205 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3206 source "drivers/cpufreq/Kconfig"
3209 source "drivers/cpuidle/Kconfig"
3213 source "drivers/firmware/Kconfig"
3215 source "arch/mips/kvm/Kconfig"