1 # SPDX-License-Identifier: GPL-2.0
5 select ARCH_BINFMT_ELF_STATE if MIPS_FP_SUPPORT
6 select ARCH_CLOCKSOURCE_DATA
7 select ARCH_DISCARD_MEMBLOCK
8 select ARCH_HAS_ELF_RANDOMIZE
9 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
10 select ARCH_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_CBPF_JIT if (!64BIT && !CPU_MICROMIPS)
47 select HAVE_EBPF_JIT if (64BIT && !CPU_MICROMIPS)
48 select HAVE_CONTEXT_TRACKING
49 select HAVE_COPY_THREAD_TLS
50 select HAVE_C_RECORDMCOUNT
51 select HAVE_DEBUG_KMEMLEAK
52 select HAVE_DEBUG_STACKOVERFLOW
53 select HAVE_DMA_CONTIGUOUS
54 select HAVE_DYNAMIC_FTRACE
55 select HAVE_EXIT_THREAD
56 select HAVE_FTRACE_MCOUNT_RECORD
57 select HAVE_FUNCTION_GRAPH_TRACER
58 select HAVE_FUNCTION_TRACER
59 select HAVE_GENERIC_DMA_COHERENT
61 select HAVE_IOREMAP_PROT
62 select HAVE_IRQ_EXIT_ON_IRQ_STACK
63 select HAVE_IRQ_TIME_ACCOUNTING
65 select HAVE_KRETPROBES
66 select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
67 select HAVE_MEMBLOCK_NODE_MAP
68 select HAVE_MOD_ARCH_SPECIFIC
71 select HAVE_PERF_EVENTS
72 select HAVE_REGS_AND_STACK_ACCESS_API
74 select HAVE_STACKPROTECTOR
75 select HAVE_SYSCALL_TRACEPOINTS
76 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
77 select IRQ_FORCED_THREADING
79 select MODULES_USE_ELF_RELA if MODULES && 64BIT
80 select MODULES_USE_ELF_REL if MODULES
81 select PERF_USE_VMALLOC
83 select SYSCTL_EXCEPTION_TRACE
86 menu "Machine selection"
93 bool "Generic board-agnostic MIPS kernel"
97 select CLKSRC_MIPS_GIC
99 select CPU_MIPSR2_IRQ_VI
100 select CPU_MIPSR2_IRQ_EI
102 select DMA_PERDEV_COHERENT
106 select MIPS_AUTO_PFN_OFFSET
107 select MIPS_CPU_SCACHE
109 select MIPS_L1_CACHE_SHIFT_7
110 select NO_EXCEPT_FILL
111 select PCI_DRIVERS_GENERIC
115 select SYS_HAS_CPU_MIPS32_R1
116 select SYS_HAS_CPU_MIPS32_R2
117 select SYS_HAS_CPU_MIPS32_R6
118 select SYS_HAS_CPU_MIPS64_R1
119 select SYS_HAS_CPU_MIPS64_R2
120 select SYS_HAS_CPU_MIPS64_R6
121 select SYS_SUPPORTS_32BIT_KERNEL
122 select SYS_SUPPORTS_64BIT_KERNEL
123 select SYS_SUPPORTS_BIG_ENDIAN
124 select SYS_SUPPORTS_HIGHMEM
125 select SYS_SUPPORTS_LITTLE_ENDIAN
126 select SYS_SUPPORTS_MICROMIPS
127 select SYS_SUPPORTS_MIPS_CPS
128 select SYS_SUPPORTS_MIPS16
129 select SYS_SUPPORTS_MULTITHREADING
130 select SYS_SUPPORTS_RELOCATABLE
131 select SYS_SUPPORTS_SMARTMIPS
132 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
133 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
134 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
135 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
136 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
137 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
141 Select this to build a kernel which aims to support multiple boards,
142 generally using a flattened device tree passed from the bootloader
143 using the boot protocol defined in the UHI (Unified Hosting
144 Interface) specification.
147 bool "Alchemy processor based machines"
148 select PHYS_ADDR_T_64BIT
152 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
153 select SYS_HAS_CPU_MIPS32_R1
154 select SYS_SUPPORTS_32BIT_KERNEL
155 select SYS_SUPPORTS_APM_EMULATION
157 select SYS_SUPPORTS_ZBOOT
161 bool "Texas Instruments AR7"
163 select DMA_NONCOHERENT
167 select NO_EXCEPT_FILL
169 select SYS_HAS_CPU_MIPS32_R1
170 select SYS_HAS_EARLY_PRINTK
171 select SYS_SUPPORTS_32BIT_KERNEL
172 select SYS_SUPPORTS_LITTLE_ENDIAN
173 select SYS_SUPPORTS_MIPS16
174 select SYS_SUPPORTS_ZBOOT_UART16550
179 Support for the Texas Instruments AR7 System-on-a-Chip
180 family: TNETD7100, 7200 and 7300.
183 bool "Atheros AR231x/AR531x SoC support"
186 select DMA_NONCOHERENT
189 select SYS_HAS_CPU_MIPS32_R1
190 select SYS_SUPPORTS_BIG_ENDIAN
191 select SYS_SUPPORTS_32BIT_KERNEL
192 select SYS_HAS_EARLY_PRINTK
194 Support for Atheros AR231x and Atheros AR531x based boards
197 bool "Atheros AR71XX/AR724X/AR913X based boards"
198 select ARCH_HAS_RESET_CONTROLLER
202 select DMA_NONCOHERENT
210 select SYS_HAS_CPU_MIPS32_R2
211 select SYS_HAS_EARLY_PRINTK
212 select SYS_SUPPORTS_32BIT_KERNEL
213 select SYS_SUPPORTS_BIG_ENDIAN
214 select SYS_SUPPORTS_MIPS16
215 select SYS_SUPPORTS_ZBOOT_UART_PROM
217 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
219 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
222 bool "Broadcom Generic BMIPS kernel"
223 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
224 select ARCH_HAS_PHYS_TO_DMA
226 select NO_EXCEPT_FILL
232 select BCM6345_L1_IRQ
233 select BCM7038_L1_IRQ
234 select BCM7120_L2_IRQ
235 select BRCMSTB_L2_IRQ
237 select DMA_NONCOHERENT
238 select SYS_SUPPORTS_32BIT_KERNEL
239 select SYS_SUPPORTS_LITTLE_ENDIAN
240 select SYS_SUPPORTS_BIG_ENDIAN
241 select SYS_SUPPORTS_HIGHMEM
242 select SYS_HAS_CPU_BMIPS32_3300
243 select SYS_HAS_CPU_BMIPS4350
244 select SYS_HAS_CPU_BMIPS4380
245 select SYS_HAS_CPU_BMIPS5000
247 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
248 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
249 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
250 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
251 select HARDIRQS_SW_RESEND
253 Build a generic DT-based kernel image that boots on select
254 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
255 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
256 must be set appropriately for your board.
259 bool "Broadcom BCM47XX based boards"
263 select DMA_NONCOHERENT
266 select SYS_HAS_CPU_MIPS32_R1
267 select NO_EXCEPT_FILL
268 select SYS_SUPPORTS_32BIT_KERNEL
269 select SYS_SUPPORTS_LITTLE_ENDIAN
270 select SYS_SUPPORTS_MIPS16
271 select SYS_SUPPORTS_ZBOOT
272 select SYS_HAS_EARLY_PRINTK
273 select USE_GENERIC_EARLY_PRINTK_8250
275 select LEDS_GPIO_REGISTER
278 select BCM47XX_SSB if !BCM47XX_BCMA
280 Support for BCM47XX based boards
283 bool "Broadcom BCM63XX based boards"
288 select DMA_NONCOHERENT
290 select SYS_SUPPORTS_32BIT_KERNEL
291 select SYS_SUPPORTS_BIG_ENDIAN
292 select SYS_HAS_EARLY_PRINTK
296 select MIPS_L1_CACHE_SHIFT_4
299 Support for BCM63XX based boards
306 select DMA_NONCOHERENT
312 select PCI_GT64XXX_PCI0
313 select SYS_HAS_CPU_NEVADA
314 select SYS_HAS_EARLY_PRINTK
315 select SYS_SUPPORTS_32BIT_KERNEL
316 select SYS_SUPPORTS_64BIT_KERNEL
317 select SYS_SUPPORTS_LITTLE_ENDIAN
318 select USE_GENERIC_EARLY_PRINTK_8250
320 config MACH_DECSTATION
324 select CEVT_R4K if CPU_R4X00
326 select CSRC_R4K if CPU_R4X00
327 select CPU_DADDI_WORKAROUNDS if 64BIT
328 select CPU_R4000_WORKAROUNDS if 64BIT
329 select CPU_R4400_WORKAROUNDS if 64BIT
330 select DMA_NONCOHERENT
333 select SYS_HAS_CPU_R3000
334 select SYS_HAS_CPU_R4X00
335 select SYS_SUPPORTS_32BIT_KERNEL
336 select SYS_SUPPORTS_64BIT_KERNEL
337 select SYS_SUPPORTS_LITTLE_ENDIAN
338 select SYS_SUPPORTS_128HZ
339 select SYS_SUPPORTS_256HZ
340 select SYS_SUPPORTS_1024HZ
341 select MIPS_L1_CACHE_SHIFT_4
343 This enables support for DEC's MIPS based workstations. For details
344 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
345 DECstation porting pages on <http://decstation.unix-ag.org/>.
347 If you have one of the following DECstation Models you definitely
348 want to choose R4xx0 for the CPU Type:
355 otherwise choose R3000.
358 bool "Jazz family of machines"
359 select ARCH_MIGHT_HAVE_PC_PARPORT
360 select ARCH_MIGHT_HAVE_PC_SERIO
363 select ARCH_MAY_HAVE_PC_FDC
366 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
367 select GENERIC_ISA_DMA
368 select HAVE_PCSPKR_PLATFORM
373 select SYS_HAS_CPU_R4X00
374 select SYS_SUPPORTS_32BIT_KERNEL
375 select SYS_SUPPORTS_64BIT_KERNEL
376 select SYS_SUPPORTS_100HZ
378 This a family of machines based on the MIPS R4030 chipset which was
379 used by several vendors to build RISC/os and Windows NT workstations.
380 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
381 Olivetti M700-10 workstations.
384 bool "Ingenic SoC based machines"
385 select SYS_SUPPORTS_32BIT_KERNEL
386 select SYS_SUPPORTS_LITTLE_ENDIAN
387 select SYS_SUPPORTS_ZBOOT_UART16550
388 select DMA_NONCOHERENT
393 select GENERIC_IRQ_CHIP
399 bool "Lantiq based platforms"
400 select DMA_NONCOHERENT
404 select SYS_HAS_CPU_MIPS32_R1
405 select SYS_HAS_CPU_MIPS32_R2
406 select SYS_SUPPORTS_BIG_ENDIAN
407 select SYS_SUPPORTS_32BIT_KERNEL
408 select SYS_SUPPORTS_MIPS16
409 select SYS_SUPPORTS_MULTITHREADING
410 select SYS_SUPPORTS_VPE_LOADER
411 select SYS_HAS_EARLY_PRINTK
418 select PINCTRL_LANTIQ
419 select ARCH_HAS_RESET_CONTROLLER
420 select RESET_CONTROLLER
423 bool "LASAT Networks platforms"
427 select DMA_NONCOHERENT
428 select SYS_HAS_EARLY_PRINTK
431 select PCI_GT64XXX_PCI0
433 select R5000_CPU_SCACHE
434 select SYS_HAS_CPU_R5000
435 select SYS_SUPPORTS_32BIT_KERNEL
436 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
437 select SYS_SUPPORTS_LITTLE_ENDIAN
439 config MACH_LOONGSON32
440 bool "Loongson-1 family of machines"
441 select SYS_SUPPORTS_ZBOOT
443 This enables support for the Loongson-1 family of machines.
445 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
446 the Institute of Computing Technology (ICT), Chinese Academy of
449 config MACH_LOONGSON64
450 bool "Loongson-2/3 family of machines"
451 select SYS_SUPPORTS_ZBOOT
453 This enables the support of Loongson-2/3 family of machines.
455 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
456 family of multi-core CPUs. They are both 64-bit general-purpose
457 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
458 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
459 in the People's Republic of China. The chief architect is Professor
462 config MACH_PISTACHIO
463 bool "IMG Pistachio SoC based boards"
467 select CLKSRC_MIPS_GIC
470 select DMA_NONCOHERENT
475 select MIPS_CPU_SCACHE
479 select SYS_HAS_CPU_MIPS32_R2
480 select SYS_SUPPORTS_32BIT_KERNEL
481 select SYS_SUPPORTS_LITTLE_ENDIAN
482 select SYS_SUPPORTS_MIPS_CPS
483 select SYS_SUPPORTS_MULTITHREADING
484 select SYS_SUPPORTS_RELOCATABLE
485 select SYS_SUPPORTS_ZBOOT
486 select SYS_HAS_EARLY_PRINTK
487 select USE_GENERIC_EARLY_PRINTK_8250
490 This enables support for the IMG Pistachio SoC platform.
493 bool "MIPS Malta board"
494 select ARCH_MAY_HAVE_PC_FDC
495 select ARCH_MIGHT_HAVE_PC_PARPORT
496 select ARCH_MIGHT_HAVE_PC_SERIO
501 select CLKSRC_MIPS_GIC
504 select DMA_MAYBE_COHERENT
505 select GENERIC_ISA_DMA
506 select HAVE_PCSPKR_PLATFORM
513 select MIPS_CPU_SCACHE
515 select MIPS_L1_CACHE_SHIFT_6
517 select PCI_GT64XXX_PCI0
520 select SYS_HAS_CPU_MIPS32_R1
521 select SYS_HAS_CPU_MIPS32_R2
522 select SYS_HAS_CPU_MIPS32_R3_5
523 select SYS_HAS_CPU_MIPS32_R5
524 select SYS_HAS_CPU_MIPS32_R6
525 select SYS_HAS_CPU_MIPS64_R1
526 select SYS_HAS_CPU_MIPS64_R2
527 select SYS_HAS_CPU_MIPS64_R6
528 select SYS_HAS_CPU_NEVADA
529 select SYS_HAS_CPU_RM7000
530 select SYS_SUPPORTS_32BIT_KERNEL
531 select SYS_SUPPORTS_64BIT_KERNEL
532 select SYS_SUPPORTS_BIG_ENDIAN
533 select SYS_SUPPORTS_HIGHMEM
534 select SYS_SUPPORTS_LITTLE_ENDIAN
535 select SYS_SUPPORTS_MICROMIPS
536 select SYS_SUPPORTS_MIPS16
537 select SYS_SUPPORTS_MIPS_CMP
538 select SYS_SUPPORTS_MIPS_CPS
539 select SYS_SUPPORTS_MULTITHREADING
540 select SYS_SUPPORTS_RELOCATABLE
541 select SYS_SUPPORTS_SMARTMIPS
542 select SYS_SUPPORTS_VPE_LOADER
543 select SYS_SUPPORTS_ZBOOT
545 select ZONE_DMA32 if 64BIT
547 This enables support for the MIPS Technologies Malta evaluation
551 bool "Microchip PIC32 Family"
553 This enables support for the Microchip PIC32 family of platforms.
555 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
559 bool "NEC EMMA2RH Mark-eins board"
563 This enables support for the NEC Electronics Mark-eins boards.
566 bool "NEC VR4100 series based machines"
569 select SYS_HAS_CPU_VR41XX
570 select SYS_SUPPORTS_MIPS16
574 bool "NXP STB220 board"
577 Support for NXP Semiconductors STB220 Development Board.
584 Support for NXP Semiconductors STB225 Development Board.
587 bool "PMC-Sierra MSP chipsets"
590 select DMA_NONCOHERENT
592 select NO_EXCEPT_FILL
594 select SYS_HAS_CPU_MIPS32_R1
595 select SYS_HAS_CPU_MIPS32_R2
596 select SYS_SUPPORTS_32BIT_KERNEL
597 select SYS_SUPPORTS_BIG_ENDIAN
598 select SYS_SUPPORTS_MIPS16
601 select SERIAL_8250_CONSOLE
602 select USB_EHCI_BIG_ENDIAN_MMIO
603 select USB_EHCI_BIG_ENDIAN_DESC
605 This adds support for the PMC-Sierra family of Multi-Service
606 Processor System-On-A-Chips. These parts include a number
607 of integrated peripherals, interfaces and DSPs in addition to
608 a variety of MIPS cores.
611 bool "Ralink based machines"
615 select DMA_NONCOHERENT
618 select SYS_HAS_CPU_MIPS32_R1
619 select SYS_HAS_CPU_MIPS32_R2
620 select SYS_SUPPORTS_32BIT_KERNEL
621 select SYS_SUPPORTS_LITTLE_ENDIAN
622 select SYS_SUPPORTS_MIPS16
623 select SYS_HAS_EARLY_PRINTK
625 select ARCH_HAS_RESET_CONTROLLER
626 select RESET_CONTROLLER
629 bool "SGI IP22 (Indy/Indigo2)"
632 select ARCH_MIGHT_HAVE_PC_SERIO
636 select DEFAULT_SGI_PARTITION
637 select DMA_NONCOHERENT
641 select IP22_CPU_SCACHE
643 select GENERIC_ISA_DMA_SUPPORT_BROKEN
645 select SGI_HAS_INDYDOG
651 select SYS_HAS_CPU_R4X00
652 select SYS_HAS_CPU_R5000
654 # Disable EARLY_PRINTK for now since it leads to overwritten prom
655 # memory during early boot on some machines.
657 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
658 # for a more details discussion
660 # select SYS_HAS_EARLY_PRINTK
661 select SYS_SUPPORTS_32BIT_KERNEL
662 select SYS_SUPPORTS_64BIT_KERNEL
663 select SYS_SUPPORTS_BIG_ENDIAN
664 select MIPS_L1_CACHE_SHIFT_7
666 This are the SGI Indy, Challenge S and Indigo2, as well as certain
667 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
668 that runs on these, say Y here.
671 bool "SGI IP27 (Origin200/2000)"
672 select ARCH_HAS_PHYS_TO_DMA
676 select DEFAULT_SGI_PARTITION
677 select SYS_HAS_EARLY_PRINTK
679 select NR_CPUS_DEFAULT_64
680 select SYS_HAS_CPU_R10000
681 select SYS_SUPPORTS_64BIT_KERNEL
682 select SYS_SUPPORTS_BIG_ENDIAN
683 select SYS_SUPPORTS_NUMA
684 select SYS_SUPPORTS_SMP
685 select MIPS_L1_CACHE_SHIFT_7
687 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
688 workstations. To compile a Linux kernel that runs on these, say Y
692 bool "SGI IP28 (Indigo2 R10k)"
695 select ARCH_MIGHT_HAVE_PC_SERIO
699 select DEFAULT_SGI_PARTITION
700 select DMA_NONCOHERENT
701 select GENERIC_ISA_DMA_SUPPORT_BROKEN
707 select SGI_HAS_INDYDOG
713 select SYS_HAS_CPU_R10000
715 # Disable EARLY_PRINTK for now since it leads to overwritten prom
716 # memory during early boot on some machines.
718 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
719 # for a more details discussion
721 # select SYS_HAS_EARLY_PRINTK
722 select SYS_SUPPORTS_64BIT_KERNEL
723 select SYS_SUPPORTS_BIG_ENDIAN
724 select MIPS_L1_CACHE_SHIFT_7
726 This is the SGI Indigo2 with R10000 processor. To compile a Linux
727 kernel that runs on these, say Y here.
731 select ARCH_HAS_PHYS_TO_DMA
737 select DMA_NONCOHERENT
740 select R5000_CPU_SCACHE
741 select RM7000_CPU_SCACHE
742 select SYS_HAS_CPU_R5000
743 select SYS_HAS_CPU_R10000 if BROKEN
744 select SYS_HAS_CPU_RM7000
745 select SYS_HAS_CPU_NEVADA
746 select SYS_SUPPORTS_64BIT_KERNEL
747 select SYS_SUPPORTS_BIG_ENDIAN
749 If you want this kernel to run on SGI O2 workstation, say Y here.
752 bool "Sibyte BCM91120C-CRhine"
754 select SIBYTE_BCM1120
756 select SYS_HAS_CPU_SB1
757 select SYS_SUPPORTS_BIG_ENDIAN
758 select SYS_SUPPORTS_LITTLE_ENDIAN
761 bool "Sibyte BCM91120x-Carmel"
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 BCM91125C-CRhone"
772 select SIBYTE_BCM1125
774 select SYS_HAS_CPU_SB1
775 select SYS_SUPPORTS_BIG_ENDIAN
776 select SYS_SUPPORTS_HIGHMEM
777 select SYS_SUPPORTS_LITTLE_ENDIAN
780 bool "Sibyte BCM91125E-Rhone"
782 select SIBYTE_BCM1125H
784 select SYS_HAS_CPU_SB1
785 select SYS_SUPPORTS_BIG_ENDIAN
786 select SYS_SUPPORTS_LITTLE_ENDIAN
789 bool "Sibyte BCM91250A-SWARM"
791 select HAVE_PATA_PLATFORM
794 select SYS_HAS_CPU_SB1
795 select SYS_SUPPORTS_BIG_ENDIAN
796 select SYS_SUPPORTS_HIGHMEM
797 select SYS_SUPPORTS_LITTLE_ENDIAN
798 select ZONE_DMA32 if 64BIT
799 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
801 config SIBYTE_LITTLESUR
802 bool "Sibyte BCM91250C2-LittleSur"
804 select HAVE_PATA_PLATFORM
807 select SYS_HAS_CPU_SB1
808 select SYS_SUPPORTS_BIG_ENDIAN
809 select SYS_SUPPORTS_HIGHMEM
810 select SYS_SUPPORTS_LITTLE_ENDIAN
811 select ZONE_DMA32 if 64BIT
813 config SIBYTE_SENTOSA
814 bool "Sibyte BCM91250E-Sentosa"
818 select SYS_HAS_CPU_SB1
819 select SYS_SUPPORTS_BIG_ENDIAN
820 select SYS_SUPPORTS_LITTLE_ENDIAN
821 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
824 bool "Sibyte BCM91480B-BigSur"
826 select NR_CPUS_DEFAULT_4
827 select SIBYTE_BCM1x80
829 select SYS_HAS_CPU_SB1
830 select SYS_SUPPORTS_BIG_ENDIAN
831 select SYS_SUPPORTS_HIGHMEM
832 select SYS_SUPPORTS_LITTLE_ENDIAN
833 select ZONE_DMA32 if 64BIT
834 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
837 bool "SNI RM200/300/400"
838 select FW_ARC if CPU_LITTLE_ENDIAN
839 select FW_ARC32 if CPU_LITTLE_ENDIAN
840 select FW_SNIPROM if CPU_BIG_ENDIAN
841 select ARCH_MAY_HAVE_PC_FDC
842 select ARCH_MIGHT_HAVE_PC_PARPORT
843 select ARCH_MIGHT_HAVE_PC_SERIO
847 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
848 select DMA_NONCOHERENT
849 select GENERIC_ISA_DMA
851 select HAVE_PCSPKR_PLATFORM
857 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
858 select SYS_HAS_CPU_R4X00
859 select SYS_HAS_CPU_R5000
860 select SYS_HAS_CPU_R10000
861 select R5000_CPU_SCACHE
862 select SYS_HAS_EARLY_PRINTK
863 select SYS_SUPPORTS_32BIT_KERNEL
864 select SYS_SUPPORTS_64BIT_KERNEL
865 select SYS_SUPPORTS_BIG_ENDIAN
866 select SYS_SUPPORTS_HIGHMEM
867 select SYS_SUPPORTS_LITTLE_ENDIAN
869 The SNI RM200/300/400 are MIPS-based machines manufactured by
870 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
871 Technology and now in turn merged with Fujitsu. Say Y here to
872 support this machine type.
875 bool "Toshiba TX39 series based machines"
878 bool "Toshiba TX49 series based machines"
880 config MIKROTIK_RB532
881 bool "Mikrotik RB532 boards"
884 select DMA_NONCOHERENT
887 select SYS_HAS_CPU_MIPS32_R1
888 select SYS_SUPPORTS_32BIT_KERNEL
889 select SYS_SUPPORTS_LITTLE_ENDIAN
893 select MIPS_L1_CACHE_SHIFT_4
895 Support the Mikrotik(tm) RouterBoard 532 series,
896 based on the IDT RC32434 SoC.
898 config CAVIUM_OCTEON_SOC
899 bool "Cavium Networks Octeon SoC based boards"
901 select ARCH_HAS_PHYS_TO_DMA
903 select PHYS_ADDR_T_64BIT
904 select SYS_SUPPORTS_64BIT_KERNEL
905 select SYS_SUPPORTS_BIG_ENDIAN
907 select EDAC_ATOMIC_SCRUB
908 select SYS_SUPPORTS_LITTLE_ENDIAN
909 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
910 select SYS_HAS_EARLY_PRINTK
911 select SYS_HAS_CPU_CAVIUM_OCTEON
918 select ARCH_SPARSEMEM_ENABLE
919 select SYS_SUPPORTS_SMP
920 select NR_CPUS_DEFAULT_64
921 select MIPS_NR_CPU_NR_MAP_1024
923 select MTD_COMPLEX_MAPPINGS
925 select SYS_SUPPORTS_RELOCATABLE
927 This option supports all of the Octeon reference boards from Cavium
928 Networks. It builds a kernel that dynamically determines the Octeon
929 CPU type and supports all known board reference implementations.
930 Some of the supported boards are:
937 Say Y here for most Octeon reference boards.
940 bool "Netlogic XLR/XLS based systems"
943 select SYS_HAS_CPU_XLR
944 select SYS_SUPPORTS_SMP
947 select SYS_SUPPORTS_32BIT_KERNEL
948 select SYS_SUPPORTS_64BIT_KERNEL
949 select PHYS_ADDR_T_64BIT
950 select SYS_SUPPORTS_BIG_ENDIAN
951 select SYS_SUPPORTS_HIGHMEM
952 select NR_CPUS_DEFAULT_32
956 select ZONE_DMA32 if 64BIT
958 select SYS_HAS_EARLY_PRINTK
959 select SYS_SUPPORTS_ZBOOT
960 select SYS_SUPPORTS_ZBOOT_UART16550
962 Support for systems based on Netlogic XLR and XLS processors.
963 Say Y here if you have a XLR or XLS based board.
966 bool "Netlogic XLP based systems"
969 select SYS_HAS_CPU_XLP
970 select SYS_SUPPORTS_SMP
972 select SYS_SUPPORTS_32BIT_KERNEL
973 select SYS_SUPPORTS_64BIT_KERNEL
974 select PHYS_ADDR_T_64BIT
976 select SYS_SUPPORTS_BIG_ENDIAN
977 select SYS_SUPPORTS_LITTLE_ENDIAN
978 select SYS_SUPPORTS_HIGHMEM
979 select NR_CPUS_DEFAULT_32
983 select ZONE_DMA32 if 64BIT
985 select SYS_HAS_EARLY_PRINTK
987 select SYS_SUPPORTS_ZBOOT
988 select SYS_SUPPORTS_ZBOOT_UART16550
990 This board is based on Netlogic XLP Processor.
991 Say Y here if you have a XLP based board.
994 bool "Para-Virtualized guest system"
997 select SYS_SUPPORTS_64BIT_KERNEL
998 select SYS_SUPPORTS_32BIT_KERNEL
999 select SYS_SUPPORTS_BIG_ENDIAN
1000 select SYS_SUPPORTS_SMP
1001 select NR_CPUS_DEFAULT_4
1002 select SYS_HAS_EARLY_PRINTK
1003 select SYS_HAS_CPU_MIPS32_R2
1004 select SYS_HAS_CPU_MIPS64_R2
1005 select SYS_HAS_CPU_CAVIUM_OCTEON
1007 select SWAP_IO_SPACE
1009 This option supports guest running under ????
1013 source "arch/mips/alchemy/Kconfig"
1014 source "arch/mips/ath25/Kconfig"
1015 source "arch/mips/ath79/Kconfig"
1016 source "arch/mips/bcm47xx/Kconfig"
1017 source "arch/mips/bcm63xx/Kconfig"
1018 source "arch/mips/bmips/Kconfig"
1019 source "arch/mips/generic/Kconfig"
1020 source "arch/mips/jazz/Kconfig"
1021 source "arch/mips/jz4740/Kconfig"
1022 source "arch/mips/lantiq/Kconfig"
1023 source "arch/mips/lasat/Kconfig"
1024 source "arch/mips/pic32/Kconfig"
1025 source "arch/mips/pistachio/Kconfig"
1026 source "arch/mips/pmcs-msp71xx/Kconfig"
1027 source "arch/mips/ralink/Kconfig"
1028 source "arch/mips/sgi-ip27/Kconfig"
1029 source "arch/mips/sibyte/Kconfig"
1030 source "arch/mips/txx9/Kconfig"
1031 source "arch/mips/vr41xx/Kconfig"
1032 source "arch/mips/cavium-octeon/Kconfig"
1033 source "arch/mips/loongson32/Kconfig"
1034 source "arch/mips/loongson64/Kconfig"
1035 source "arch/mips/netlogic/Kconfig"
1036 source "arch/mips/paravirt/Kconfig"
1040 config RWSEM_GENERIC_SPINLOCK
1044 config RWSEM_XCHGADD_ALGORITHM
1047 config GENERIC_HWEIGHT
1051 config GENERIC_CALIBRATE_DELAY
1055 config SCHED_OMIT_FRAME_POINTER
1060 # Select some configuration options automatically based on user selections.
1065 config ARCH_MAY_HAVE_PC_FDC
1101 config MIPS_CLOCK_VSYSCALL
1102 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1111 config ARCH_SUPPORTS_UPROBES
1114 config DMA_MAYBE_COHERENT
1115 select ARCH_HAS_DMA_COHERENCE_H
1116 select DMA_NONCOHERENT
1119 config DMA_PERDEV_COHERENT
1121 select DMA_NONCOHERENT
1123 config DMA_NONCOHERENT
1125 select ARCH_HAS_DMA_MMAP_PGPROT
1126 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1127 select ARCH_HAS_SYNC_DMA_FOR_CPU
1128 select NEED_DMA_MAP_STATE
1129 select ARCH_HAS_DMA_COHERENT_TO_PFN
1130 select DMA_NONCOHERENT_CACHE_SYNC
1132 config SYS_HAS_EARLY_PRINTK
1135 config SYS_SUPPORTS_HOTPLUG_CPU
1138 config MIPS_BONITO64
1153 config NO_IOPORT_MAP
1158 default y if !CPU_HAS_LOAD_STORE_LR
1160 config GENERIC_ISA_DMA
1162 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1165 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1167 select GENERIC_ISA_DMA
1172 config HOLES_IN_ZONE
1175 config SYS_SUPPORTS_RELOCATABLE
1178 Selected if the platform supports relocating the kernel.
1179 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1180 to allow access to command line and entropy sources.
1182 config MIPS_CBPF_JIT
1184 depends on BPF_JIT && HAVE_CBPF_JIT
1186 config MIPS_EBPF_JIT
1188 depends on BPF_JIT && HAVE_EBPF_JIT
1192 # Endianness selection. Sufficiently obscure so many users don't know what to
1193 # answer,so we try hard to limit the available choices. Also the use of a
1194 # choice statement should be more obvious to the user.
1197 prompt "Endianness selection"
1199 Some MIPS machines can be configured for either little or big endian
1200 byte order. These modes require different kernels and a different
1201 Linux distribution. In general there is one preferred byteorder for a
1202 particular system but some systems are just as commonly used in the
1203 one or the other endianness.
1205 config CPU_BIG_ENDIAN
1207 depends on SYS_SUPPORTS_BIG_ENDIAN
1209 config CPU_LITTLE_ENDIAN
1210 bool "Little endian"
1211 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1218 config SYS_SUPPORTS_APM_EMULATION
1221 config SYS_SUPPORTS_BIG_ENDIAN
1224 config SYS_SUPPORTS_LITTLE_ENDIAN
1227 config SYS_SUPPORTS_HUGETLBFS
1229 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1232 config MIPS_HUGE_TLB_SUPPORT
1233 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1250 config PCI_GT64XXX_PCI0
1253 config NO_EXCEPT_FILL
1260 select DMA_NONCOHERENT
1262 select SWAP_IO_SPACE
1263 select SYS_HAS_CPU_R5500
1264 select SYS_SUPPORTS_32BIT_KERNEL
1265 select SYS_SUPPORTS_64BIT_KERNEL
1266 select SYS_SUPPORTS_BIG_ENDIAN
1273 select DMA_NONCOHERENT
1274 select SYS_HAS_CPU_MIPS32_R2
1275 select SYS_SUPPORTS_32BIT_KERNEL
1276 select SYS_SUPPORTS_LITTLE_ENDIAN
1277 select SYS_SUPPORTS_BIG_ENDIAN
1278 select SYS_SUPPORTS_MIPS16
1279 select CPU_MIPSR2_IRQ_VI
1288 config SWAP_IO_SPACE
1291 config SGI_HAS_INDYDOG
1303 config SGI_HAS_ZILOG
1306 config SGI_HAS_I8042
1309 config DEFAULT_SGI_PARTITION
1321 config MIPS_L1_CACHE_SHIFT_4
1324 config MIPS_L1_CACHE_SHIFT_5
1327 config MIPS_L1_CACHE_SHIFT_6
1330 config MIPS_L1_CACHE_SHIFT_7
1333 config MIPS_L1_CACHE_SHIFT
1335 default "7" if MIPS_L1_CACHE_SHIFT_7
1336 default "6" if MIPS_L1_CACHE_SHIFT_6
1337 default "5" if MIPS_L1_CACHE_SHIFT_5
1338 default "4" if MIPS_L1_CACHE_SHIFT_4
1341 config HAVE_STD_PC_SERIAL_PORT
1345 bool "ARC console support"
1346 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1350 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1355 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1364 menu "CPU selection"
1370 config CPU_LOONGSON3
1371 bool "Loongson 3 CPU"
1372 depends on SYS_HAS_CPU_LOONGSON3
1373 select ARCH_HAS_PHYS_TO_DMA
1374 select CPU_SUPPORTS_64BIT_KERNEL
1375 select CPU_SUPPORTS_HIGHMEM
1376 select CPU_SUPPORTS_HUGEPAGES
1377 select CPU_HAS_LOAD_STORE_LR
1378 select WEAK_ORDERING
1379 select WEAK_REORDERING_BEYOND_LLSC
1380 select MIPS_PGD_C0_CONTEXT
1381 select MIPS_L1_CACHE_SHIFT_6
1385 The Loongson 3 processor implements the MIPS64R2 instruction
1386 set with many extensions.
1388 config LOONGSON3_ENHANCEMENT
1389 bool "New Loongson 3 CPU Enhancements"
1392 select CPU_HAS_PREFETCH
1393 depends on CPU_LOONGSON3
1395 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1396 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1397 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1398 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1399 Fast TLB refill support, etc.
1401 This option enable those enhancements which are not probed at run
1402 time. If you want a generic kernel to run on all Loongson 3 machines,
1403 please say 'N' here. If you want a high-performance kernel to run on
1404 new Loongson 3 machines only, please say 'Y' here.
1406 config CPU_LOONGSON3_WORKAROUNDS
1407 bool "Old Loongson 3 LLSC Workarounds"
1409 depends on CPU_LOONGSON3
1411 Loongson 3 processors have the llsc issues which require workarounds.
1412 Without workarounds the system may hang unexpectedly.
1414 Newer Loongson 3 will fix these issues and no workarounds are needed.
1415 The workarounds have no significant side effect on them but may
1416 decrease the performance of the system so this option should be
1417 disabled unless the kernel is intended to be run on old systems.
1419 If unsure, please say Y.
1421 config CPU_LOONGSON2E
1423 depends on SYS_HAS_CPU_LOONGSON2E
1424 select CPU_LOONGSON2
1426 The Loongson 2E processor implements the MIPS III instruction set
1427 with many extensions.
1429 It has an internal FPGA northbridge, which is compatible to
1432 config CPU_LOONGSON2F
1434 depends on SYS_HAS_CPU_LOONGSON2F
1435 select CPU_LOONGSON2
1438 The Loongson 2F processor implements the MIPS III instruction set
1439 with many extensions.
1441 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1442 have a similar programming interface with FPGA northbridge used in
1445 config CPU_LOONGSON1B
1447 depends on SYS_HAS_CPU_LOONGSON1B
1448 select CPU_LOONGSON1
1449 select LEDS_GPIO_REGISTER
1451 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1452 Release 1 instruction set and part of the MIPS32 Release 2
1455 config CPU_LOONGSON1C
1457 depends on SYS_HAS_CPU_LOONGSON1C
1458 select CPU_LOONGSON1
1459 select LEDS_GPIO_REGISTER
1461 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1462 Release 1 instruction set and part of the MIPS32 Release 2
1465 config CPU_MIPS32_R1
1466 bool "MIPS32 Release 1"
1467 depends on SYS_HAS_CPU_MIPS32_R1
1468 select CPU_HAS_PREFETCH
1469 select CPU_HAS_LOAD_STORE_LR
1470 select CPU_SUPPORTS_32BIT_KERNEL
1471 select CPU_SUPPORTS_HIGHMEM
1473 Choose this option to build a kernel for release 1 or later of the
1474 MIPS32 architecture. Most modern embedded systems with a 32-bit
1475 MIPS processor are based on a MIPS32 processor. If you know the
1476 specific type of processor in your system, choose those that one
1477 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1478 Release 2 of the MIPS32 architecture is available since several
1479 years so chances are you even have a MIPS32 Release 2 processor
1480 in which case you should choose CPU_MIPS32_R2 instead for better
1483 config CPU_MIPS32_R2
1484 bool "MIPS32 Release 2"
1485 depends on SYS_HAS_CPU_MIPS32_R2
1486 select CPU_HAS_PREFETCH
1487 select CPU_HAS_LOAD_STORE_LR
1488 select CPU_SUPPORTS_32BIT_KERNEL
1489 select CPU_SUPPORTS_HIGHMEM
1490 select CPU_SUPPORTS_MSA
1493 Choose this option to build a kernel for release 2 or later of the
1494 MIPS32 architecture. Most modern embedded systems with a 32-bit
1495 MIPS processor are based on a MIPS32 processor. If you know the
1496 specific type of processor in your system, choose those that one
1497 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1499 config CPU_MIPS32_R6
1500 bool "MIPS32 Release 6"
1501 depends on SYS_HAS_CPU_MIPS32_R6
1502 select CPU_HAS_PREFETCH
1503 select CPU_SUPPORTS_32BIT_KERNEL
1504 select CPU_SUPPORTS_HIGHMEM
1505 select CPU_SUPPORTS_MSA
1507 select MIPS_O32_FP64_SUPPORT
1509 Choose this option to build a kernel for release 6 or later of the
1510 MIPS32 architecture. New MIPS processors, starting with the Warrior
1511 family, are based on a MIPS32r6 processor. If you own an older
1512 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1514 config CPU_MIPS64_R1
1515 bool "MIPS64 Release 1"
1516 depends on SYS_HAS_CPU_MIPS64_R1
1517 select CPU_HAS_PREFETCH
1518 select CPU_HAS_LOAD_STORE_LR
1519 select CPU_SUPPORTS_32BIT_KERNEL
1520 select CPU_SUPPORTS_64BIT_KERNEL
1521 select CPU_SUPPORTS_HIGHMEM
1522 select CPU_SUPPORTS_HUGEPAGES
1524 Choose this option to build a kernel for release 1 or later of the
1525 MIPS64 architecture. Many modern embedded systems with a 64-bit
1526 MIPS processor are based on a MIPS64 processor. If you know the
1527 specific type of processor in your system, choose those that one
1528 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1529 Release 2 of the MIPS64 architecture is available since several
1530 years so chances are you even have a MIPS64 Release 2 processor
1531 in which case you should choose CPU_MIPS64_R2 instead for better
1534 config CPU_MIPS64_R2
1535 bool "MIPS64 Release 2"
1536 depends on SYS_HAS_CPU_MIPS64_R2
1537 select CPU_HAS_PREFETCH
1538 select CPU_HAS_LOAD_STORE_LR
1539 select CPU_SUPPORTS_32BIT_KERNEL
1540 select CPU_SUPPORTS_64BIT_KERNEL
1541 select CPU_SUPPORTS_HIGHMEM
1542 select CPU_SUPPORTS_HUGEPAGES
1543 select CPU_SUPPORTS_MSA
1546 Choose this option to build a kernel for release 2 or later of the
1547 MIPS64 architecture. Many modern embedded systems with a 64-bit
1548 MIPS processor are based on a MIPS64 processor. If you know the
1549 specific type of processor in your system, choose those that one
1550 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1552 config CPU_MIPS64_R6
1553 bool "MIPS64 Release 6"
1554 depends on SYS_HAS_CPU_MIPS64_R6
1555 select CPU_HAS_PREFETCH
1556 select CPU_SUPPORTS_32BIT_KERNEL
1557 select CPU_SUPPORTS_64BIT_KERNEL
1558 select CPU_SUPPORTS_HIGHMEM
1559 select CPU_SUPPORTS_MSA
1560 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1563 Choose this option to build a kernel for release 6 or later of the
1564 MIPS64 architecture. New MIPS processors, starting with the Warrior
1565 family, are based on a MIPS64r6 processor. If you own an older
1566 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1570 depends on SYS_HAS_CPU_R3000
1572 select CPU_HAS_LOAD_STORE_LR
1573 select CPU_SUPPORTS_32BIT_KERNEL
1574 select CPU_SUPPORTS_HIGHMEM
1576 Please make sure to pick the right CPU type. Linux/MIPS is not
1577 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1578 *not* work on R4000 machines and vice versa. However, since most
1579 of the supported machines have an R4000 (or similar) CPU, R4x00
1580 might be a safe bet. If the resulting kernel does not work,
1581 try to recompile with R3000.
1585 depends on SYS_HAS_CPU_TX39XX
1586 select CPU_SUPPORTS_32BIT_KERNEL
1587 select CPU_HAS_LOAD_STORE_LR
1591 depends on SYS_HAS_CPU_VR41XX
1592 select CPU_SUPPORTS_32BIT_KERNEL
1593 select CPU_SUPPORTS_64BIT_KERNEL
1594 select CPU_HAS_LOAD_STORE_LR
1596 The options selects support for the NEC VR4100 series of processors.
1597 Only choose this option if you have one of these processors as a
1598 kernel built with this option will not run on any other type of
1599 processor or vice versa.
1603 depends on SYS_HAS_CPU_R4300
1604 select CPU_SUPPORTS_32BIT_KERNEL
1605 select CPU_SUPPORTS_64BIT_KERNEL
1606 select CPU_HAS_LOAD_STORE_LR
1608 MIPS Technologies R4300-series processors.
1612 depends on SYS_HAS_CPU_R4X00
1613 select CPU_SUPPORTS_32BIT_KERNEL
1614 select CPU_SUPPORTS_64BIT_KERNEL
1615 select CPU_SUPPORTS_HUGEPAGES
1616 select CPU_HAS_LOAD_STORE_LR
1618 MIPS Technologies R4000-series processors other than 4300, including
1619 the R4000, R4400, R4600, and 4700.
1623 depends on SYS_HAS_CPU_TX49XX
1624 select CPU_HAS_PREFETCH
1625 select CPU_HAS_LOAD_STORE_LR
1626 select CPU_SUPPORTS_32BIT_KERNEL
1627 select CPU_SUPPORTS_64BIT_KERNEL
1628 select CPU_SUPPORTS_HUGEPAGES
1632 depends on SYS_HAS_CPU_R5000
1633 select CPU_SUPPORTS_32BIT_KERNEL
1634 select CPU_SUPPORTS_64BIT_KERNEL
1635 select CPU_SUPPORTS_HUGEPAGES
1636 select CPU_HAS_LOAD_STORE_LR
1638 MIPS Technologies R5000-series processors other than the Nevada.
1642 depends on SYS_HAS_CPU_R5432
1643 select CPU_SUPPORTS_32BIT_KERNEL
1644 select CPU_SUPPORTS_64BIT_KERNEL
1645 select CPU_SUPPORTS_HUGEPAGES
1646 select CPU_HAS_LOAD_STORE_LR
1650 depends on SYS_HAS_CPU_R5500
1651 select CPU_SUPPORTS_32BIT_KERNEL
1652 select CPU_SUPPORTS_64BIT_KERNEL
1653 select CPU_SUPPORTS_HUGEPAGES
1654 select CPU_HAS_LOAD_STORE_LR
1656 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1661 depends on SYS_HAS_CPU_NEVADA
1662 select CPU_SUPPORTS_32BIT_KERNEL
1663 select CPU_SUPPORTS_64BIT_KERNEL
1664 select CPU_SUPPORTS_HUGEPAGES
1665 select CPU_HAS_LOAD_STORE_LR
1667 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1671 depends on SYS_HAS_CPU_R8000
1672 select CPU_HAS_PREFETCH
1673 select CPU_HAS_LOAD_STORE_LR
1674 select CPU_SUPPORTS_64BIT_KERNEL
1676 MIPS Technologies R8000 processors. Note these processors are
1677 uncommon and the support for them is incomplete.
1681 depends on SYS_HAS_CPU_R10000
1682 select CPU_HAS_PREFETCH
1683 select CPU_HAS_LOAD_STORE_LR
1684 select CPU_SUPPORTS_32BIT_KERNEL
1685 select CPU_SUPPORTS_64BIT_KERNEL
1686 select CPU_SUPPORTS_HIGHMEM
1687 select CPU_SUPPORTS_HUGEPAGES
1689 MIPS Technologies R10000-series processors.
1693 depends on SYS_HAS_CPU_RM7000
1694 select CPU_HAS_PREFETCH
1695 select CPU_HAS_LOAD_STORE_LR
1696 select CPU_SUPPORTS_32BIT_KERNEL
1697 select CPU_SUPPORTS_64BIT_KERNEL
1698 select CPU_SUPPORTS_HIGHMEM
1699 select CPU_SUPPORTS_HUGEPAGES
1703 depends on SYS_HAS_CPU_SB1
1704 select CPU_HAS_LOAD_STORE_LR
1705 select CPU_SUPPORTS_32BIT_KERNEL
1706 select CPU_SUPPORTS_64BIT_KERNEL
1707 select CPU_SUPPORTS_HIGHMEM
1708 select CPU_SUPPORTS_HUGEPAGES
1709 select WEAK_ORDERING
1711 config CPU_CAVIUM_OCTEON
1712 bool "Cavium Octeon processor"
1713 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1714 select CPU_HAS_PREFETCH
1715 select CPU_HAS_LOAD_STORE_LR
1716 select CPU_SUPPORTS_64BIT_KERNEL
1717 select WEAK_ORDERING
1718 select CPU_SUPPORTS_HIGHMEM
1719 select CPU_SUPPORTS_HUGEPAGES
1720 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1721 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1722 select MIPS_L1_CACHE_SHIFT_7
1725 The Cavium Octeon processor is a highly integrated chip containing
1726 many ethernet hardware widgets for networking tasks. The processor
1727 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1728 Full details can be found at http://www.caviumnetworks.com.
1731 bool "Broadcom BMIPS"
1732 depends on SYS_HAS_CPU_BMIPS
1734 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1735 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1736 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1737 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1738 select CPU_SUPPORTS_32BIT_KERNEL
1739 select DMA_NONCOHERENT
1741 select SWAP_IO_SPACE
1742 select WEAK_ORDERING
1743 select CPU_SUPPORTS_HIGHMEM
1744 select CPU_HAS_PREFETCH
1745 select CPU_HAS_LOAD_STORE_LR
1746 select CPU_SUPPORTS_CPUFREQ
1747 select MIPS_EXTERNAL_TIMER
1749 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1752 bool "Netlogic XLR SoC"
1753 depends on SYS_HAS_CPU_XLR
1754 select CPU_HAS_LOAD_STORE_LR
1755 select CPU_SUPPORTS_32BIT_KERNEL
1756 select CPU_SUPPORTS_64BIT_KERNEL
1757 select CPU_SUPPORTS_HIGHMEM
1758 select CPU_SUPPORTS_HUGEPAGES
1759 select WEAK_ORDERING
1760 select WEAK_REORDERING_BEYOND_LLSC
1762 Netlogic Microsystems XLR/XLS processors.
1765 bool "Netlogic XLP SoC"
1766 depends on SYS_HAS_CPU_XLP
1767 select CPU_SUPPORTS_32BIT_KERNEL
1768 select CPU_SUPPORTS_64BIT_KERNEL
1769 select CPU_SUPPORTS_HIGHMEM
1770 select WEAK_ORDERING
1771 select WEAK_REORDERING_BEYOND_LLSC
1772 select CPU_HAS_PREFETCH
1773 select CPU_HAS_LOAD_STORE_LR
1775 select CPU_SUPPORTS_HUGEPAGES
1776 select MIPS_ASID_BITS_VARIABLE
1778 Netlogic Microsystems XLP processors.
1781 config CPU_MIPS32_3_5_FEATURES
1782 bool "MIPS32 Release 3.5 Features"
1783 depends on SYS_HAS_CPU_MIPS32_R3_5
1784 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1786 Choose this option to build a kernel for release 2 or later of the
1787 MIPS32 architecture including features from the 3.5 release such as
1788 support for Enhanced Virtual Addressing (EVA).
1790 config CPU_MIPS32_3_5_EVA
1791 bool "Enhanced Virtual Addressing (EVA)"
1792 depends on CPU_MIPS32_3_5_FEATURES
1796 Choose this option if you want to enable the Enhanced Virtual
1797 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1798 One of its primary benefits is an increase in the maximum size
1799 of lowmem (up to 3GB). If unsure, say 'N' here.
1801 config CPU_MIPS32_R5_FEATURES
1802 bool "MIPS32 Release 5 Features"
1803 depends on SYS_HAS_CPU_MIPS32_R5
1804 depends on CPU_MIPS32_R2
1806 Choose this option to build a kernel for release 2 or later of the
1807 MIPS32 architecture including features from release 5 such as
1808 support for Extended Physical Addressing (XPA).
1810 config CPU_MIPS32_R5_XPA
1811 bool "Extended Physical Addressing (XPA)"
1812 depends on CPU_MIPS32_R5_FEATURES
1814 depends on !PAGE_SIZE_4KB
1815 depends on SYS_SUPPORTS_HIGHMEM
1818 select PHYS_ADDR_T_64BIT
1821 Choose this option if you want to enable the Extended Physical
1822 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1823 benefit is to increase physical addressing equal to or greater
1824 than 40 bits. Note that this has the side effect of turning on
1825 64-bit addressing which in turn makes the PTEs 64-bit in size.
1826 If unsure, say 'N' here.
1829 config CPU_NOP_WORKAROUNDS
1832 config CPU_JUMP_WORKAROUNDS
1835 config CPU_LOONGSON2F_WORKAROUNDS
1836 bool "Loongson 2F Workarounds"
1838 select CPU_NOP_WORKAROUNDS
1839 select CPU_JUMP_WORKAROUNDS
1841 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1842 require workarounds. Without workarounds the system may hang
1843 unexpectedly. For more information please refer to the gas
1844 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1846 Loongson 2F03 and later have fixed these issues and no workarounds
1847 are needed. The workarounds have no significant side effect on them
1848 but may decrease the performance of the system so this option should
1849 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1852 If unsure, please say Y.
1853 endif # CPU_LOONGSON2F
1855 config SYS_SUPPORTS_ZBOOT
1857 select HAVE_KERNEL_GZIP
1858 select HAVE_KERNEL_BZIP2
1859 select HAVE_KERNEL_LZ4
1860 select HAVE_KERNEL_LZMA
1861 select HAVE_KERNEL_LZO
1862 select HAVE_KERNEL_XZ
1864 config SYS_SUPPORTS_ZBOOT_UART16550
1866 select SYS_SUPPORTS_ZBOOT
1868 config SYS_SUPPORTS_ZBOOT_UART_PROM
1870 select SYS_SUPPORTS_ZBOOT
1872 config CPU_LOONGSON2
1874 select CPU_SUPPORTS_32BIT_KERNEL
1875 select CPU_SUPPORTS_64BIT_KERNEL
1876 select CPU_SUPPORTS_HIGHMEM
1877 select CPU_SUPPORTS_HUGEPAGES
1878 select ARCH_HAS_PHYS_TO_DMA
1879 select CPU_HAS_LOAD_STORE_LR
1881 config CPU_LOONGSON1
1885 select CPU_HAS_PREFETCH
1886 select CPU_HAS_LOAD_STORE_LR
1887 select CPU_SUPPORTS_32BIT_KERNEL
1888 select CPU_SUPPORTS_HIGHMEM
1889 select CPU_SUPPORTS_CPUFREQ
1891 config CPU_BMIPS32_3300
1892 select SMP_UP if SMP
1895 config CPU_BMIPS4350
1897 select SYS_SUPPORTS_SMP
1898 select SYS_SUPPORTS_HOTPLUG_CPU
1900 config CPU_BMIPS4380
1902 select MIPS_L1_CACHE_SHIFT_6
1903 select SYS_SUPPORTS_SMP
1904 select SYS_SUPPORTS_HOTPLUG_CPU
1907 config CPU_BMIPS5000
1909 select MIPS_CPU_SCACHE
1910 select MIPS_L1_CACHE_SHIFT_7
1911 select SYS_SUPPORTS_SMP
1912 select SYS_SUPPORTS_HOTPLUG_CPU
1915 config SYS_HAS_CPU_LOONGSON3
1917 select CPU_SUPPORTS_CPUFREQ
1920 config SYS_HAS_CPU_LOONGSON2E
1923 config SYS_HAS_CPU_LOONGSON2F
1925 select CPU_SUPPORTS_CPUFREQ
1926 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1927 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1929 config SYS_HAS_CPU_LOONGSON1B
1932 config SYS_HAS_CPU_LOONGSON1C
1935 config SYS_HAS_CPU_MIPS32_R1
1938 config SYS_HAS_CPU_MIPS32_R2
1941 config SYS_HAS_CPU_MIPS32_R3_5
1944 config SYS_HAS_CPU_MIPS32_R5
1947 config SYS_HAS_CPU_MIPS32_R6
1950 config SYS_HAS_CPU_MIPS64_R1
1953 config SYS_HAS_CPU_MIPS64_R2
1956 config SYS_HAS_CPU_MIPS64_R6
1959 config SYS_HAS_CPU_R3000
1962 config SYS_HAS_CPU_TX39XX
1965 config SYS_HAS_CPU_VR41XX
1968 config SYS_HAS_CPU_R4300
1971 config SYS_HAS_CPU_R4X00
1974 config SYS_HAS_CPU_TX49XX
1977 config SYS_HAS_CPU_R5000
1980 config SYS_HAS_CPU_R5432
1983 config SYS_HAS_CPU_R5500
1986 config SYS_HAS_CPU_NEVADA
1989 config SYS_HAS_CPU_R8000
1992 config SYS_HAS_CPU_R10000
1995 config SYS_HAS_CPU_RM7000
1998 config SYS_HAS_CPU_SB1
2001 config SYS_HAS_CPU_CAVIUM_OCTEON
2004 config SYS_HAS_CPU_BMIPS
2007 config SYS_HAS_CPU_BMIPS32_3300
2009 select SYS_HAS_CPU_BMIPS
2011 config SYS_HAS_CPU_BMIPS4350
2013 select SYS_HAS_CPU_BMIPS
2015 config SYS_HAS_CPU_BMIPS4380
2017 select SYS_HAS_CPU_BMIPS
2019 config SYS_HAS_CPU_BMIPS5000
2021 select SYS_HAS_CPU_BMIPS
2023 config SYS_HAS_CPU_XLR
2026 config SYS_HAS_CPU_XLP
2030 # CPU may reorder R->R, R->W, W->R, W->W
2031 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2033 config WEAK_ORDERING
2037 # CPU may reorder reads and writes beyond LL/SC
2038 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2040 config WEAK_REORDERING_BEYOND_LLSC
2045 # These two indicate any level of the MIPS32 and MIPS64 architecture
2049 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2053 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2056 # These indicate the revision of the architecture
2060 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2064 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2070 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2072 select HAVE_ARCH_BITREVERSE
2073 select MIPS_ASID_BITS_VARIABLE
2074 select MIPS_CRC_SUPPORT
2077 config TARGET_ISA_REV
2079 default 1 if CPU_MIPSR1
2080 default 2 if CPU_MIPSR2
2081 default 6 if CPU_MIPSR6
2084 Reflects the ISA revision being targeted by the kernel build. This
2085 is effectively the Kconfig equivalent of MIPS_ISA_REV.
2093 config SYS_SUPPORTS_32BIT_KERNEL
2095 config SYS_SUPPORTS_64BIT_KERNEL
2097 config CPU_SUPPORTS_32BIT_KERNEL
2099 config CPU_SUPPORTS_64BIT_KERNEL
2101 config CPU_SUPPORTS_CPUFREQ
2103 config CPU_SUPPORTS_ADDRWINCFG
2105 config CPU_SUPPORTS_HUGEPAGES
2107 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2109 config MIPS_PGD_C0_CONTEXT
2111 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2114 # Set to y for ptrace access to watch registers.
2116 config HARDWARE_WATCHPOINTS
2118 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2123 prompt "Kernel code model"
2125 You should only select this option if you have a workload that
2126 actually benefits from 64-bit processing or if your machine has
2127 large memory. You will only be presented a single option in this
2128 menu if your system does not support both 32-bit and 64-bit kernels.
2131 bool "32-bit kernel"
2132 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2135 Select this option if you want to build a 32-bit kernel.
2138 bool "64-bit kernel"
2139 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2141 Select this option if you want to build a 64-bit kernel.
2146 bool "KVM Guest Kernel"
2147 depends on BROKEN_ON_SMP
2149 Select this option if building a guest kernel for KVM (Trap & Emulate)
2152 config KVM_GUEST_TIMER_FREQ
2153 int "Count/Compare Timer Frequency (MHz)"
2154 depends on KVM_GUEST
2157 Set this to non-zero if building a guest kernel for KVM to skip RTC
2158 emulation when determining guest CPU Frequency. Instead, the guest's
2159 timer frequency is specified directly.
2161 config MIPS_VA_BITS_48
2162 bool "48 bits virtual memory"
2165 Support a maximum at least 48 bits of application virtual
2166 memory. Default is 40 bits or less, depending on the CPU.
2167 For page sizes 16k and above, this option results in a small
2168 memory overhead for page tables. For 4k page size, a fourth
2169 level of page tables is added which imposes both a memory
2170 overhead as well as slower TLB fault handling.
2175 prompt "Kernel page size"
2176 default PAGE_SIZE_4KB
2178 config PAGE_SIZE_4KB
2180 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2182 This option select the standard 4kB Linux page size. On some
2183 R3000-family processors this is the only available page size. Using
2184 4kB page size will minimize memory consumption and is therefore
2185 recommended for low memory systems.
2187 config PAGE_SIZE_8KB
2189 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2190 depends on !MIPS_VA_BITS_48
2192 Using 8kB page size will result in higher performance kernel at
2193 the price of higher memory consumption. This option is available
2194 only on R8000 and cnMIPS processors. Note that you will need a
2195 suitable Linux distribution to support this.
2197 config PAGE_SIZE_16KB
2199 depends on !CPU_R3000 && !CPU_TX39XX
2201 Using 16kB page size will result in higher performance kernel at
2202 the price of higher memory consumption. This option is available on
2203 all non-R3000 family processors. Note that you will need a suitable
2204 Linux distribution to support this.
2206 config PAGE_SIZE_32KB
2208 depends on CPU_CAVIUM_OCTEON
2209 depends on !MIPS_VA_BITS_48
2211 Using 32kB page size will result in higher performance kernel at
2212 the price of higher memory consumption. This option is available
2213 only on cnMIPS cores. Note that you will need a suitable Linux
2214 distribution to support this.
2216 config PAGE_SIZE_64KB
2218 depends on !CPU_R3000 && !CPU_TX39XX
2220 Using 64kB page size will result in higher performance kernel at
2221 the price of higher memory consumption. This option is available on
2222 all non-R3000 family processor. Not that at the time of this
2223 writing this option is still high experimental.
2227 config FORCE_MAX_ZONEORDER
2228 int "Maximum zone order"
2229 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2230 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2231 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2232 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2233 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2234 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2238 The kernel memory allocator divides physically contiguous memory
2239 blocks into "zones", where each zone is a power of two number of
2240 pages. This option selects the largest power of two that the kernel
2241 keeps in the memory allocator. If you need to allocate very large
2242 blocks of physically contiguous memory, then you may need to
2243 increase this value.
2245 This config option is actually maximum order plus one. For example,
2246 a value of 11 means that the largest free memory block is 2^10 pages.
2248 The page size is not necessarily 4KB. Keep this in mind
2249 when choosing a value for this option.
2254 config IP22_CPU_SCACHE
2259 # Support for a MIPS32 / MIPS64 style S-caches
2261 config MIPS_CPU_SCACHE
2265 config R5000_CPU_SCACHE
2269 config RM7000_CPU_SCACHE
2273 config SIBYTE_DMA_PAGEOPS
2274 bool "Use DMA to clear/copy pages"
2277 Instead of using the CPU to zero and copy pages, use a Data Mover
2278 channel. These DMA channels are otherwise unused by the standard
2279 SiByte Linux port. Seems to give a small performance benefit.
2281 config CPU_HAS_PREFETCH
2284 config CPU_GENERIC_DUMP_TLB
2286 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
2288 config MIPS_FP_SUPPORT
2289 bool "Floating Point support" if EXPERT
2292 Select y to include support for floating point in the kernel
2293 including initialization of FPU hardware, FP context save & restore
2294 and emulation of an FPU where necessary. Without this support any
2295 userland program attempting to use floating point instructions will
2298 If you know that your userland will not attempt to use floating point
2299 instructions then you can say n here to shrink the kernel a little.
2303 config CPU_R2300_FPU
2305 depends on MIPS_FP_SUPPORT
2306 default y if CPU_R3000 || CPU_TX39XX
2310 depends on MIPS_FP_SUPPORT
2311 default y if !CPU_R2300_FPU
2313 config CPU_R4K_CACHE_TLB
2315 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2318 bool "MIPS MT SMP support (1 TC on each available VPE)"
2320 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2321 select CPU_MIPSR2_IRQ_VI
2322 select CPU_MIPSR2_IRQ_EI
2327 select SYS_SUPPORTS_SMP
2328 select SYS_SUPPORTS_SCHED_SMT
2329 select MIPS_PERF_SHARED_TC_COUNTERS
2331 This is a kernel model which is known as SMVP. This is supported
2332 on cores with the MT ASE and uses the available VPEs to implement
2333 virtual processors which supports SMP. This is equivalent to the
2334 Intel Hyperthreading feature. For further information go to
2335 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2341 bool "SMT (multithreading) scheduler support"
2342 depends on SYS_SUPPORTS_SCHED_SMT
2345 SMT scheduler support improves the CPU scheduler's decision making
2346 when dealing with MIPS MT enabled cores at a cost of slightly
2347 increased overhead in some places. If unsure say N here.
2349 config SYS_SUPPORTS_SCHED_SMT
2352 config SYS_SUPPORTS_MULTITHREADING
2355 config MIPS_MT_FPAFF
2356 bool "Dynamic FPU affinity for FP-intensive threads"
2358 depends on MIPS_MT_SMP
2360 config MIPSR2_TO_R6_EMULATOR
2361 bool "MIPS R2-to-R6 emulator"
2362 depends on CPU_MIPSR6
2363 depends on MIPS_FP_SUPPORT
2366 Choose this option if you want to run non-R6 MIPS userland code.
2367 Even if you say 'Y' here, the emulator will still be disabled by
2368 default. You can enable it using the 'mipsr2emu' kernel option.
2369 The only reason this is a build-time option is to save ~14K from the
2372 config SYS_SUPPORTS_VPE_LOADER
2374 depends on SYS_SUPPORTS_MULTITHREADING
2376 Indicates that the platform supports the VPE loader, and provides
2379 config MIPS_VPE_LOADER
2380 bool "VPE loader support."
2381 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2382 select CPU_MIPSR2_IRQ_VI
2383 select CPU_MIPSR2_IRQ_EI
2386 Includes a loader for loading an elf relocatable object
2387 onto another VPE and running it.
2389 config MIPS_VPE_LOADER_CMP
2392 depends on MIPS_VPE_LOADER && MIPS_CMP
2394 config MIPS_VPE_LOADER_MT
2397 depends on MIPS_VPE_LOADER && !MIPS_CMP
2399 config MIPS_VPE_LOADER_TOM
2400 bool "Load VPE program into memory hidden from linux"
2401 depends on MIPS_VPE_LOADER
2404 The loader can use memory that is present but has been hidden from
2405 Linux using the kernel command line option "mem=xxMB". It's up to
2406 you to ensure the amount you put in the option and the space your
2407 program requires is less or equal to the amount physically present.
2409 config MIPS_VPE_APSP_API
2410 bool "Enable support for AP/SP API (RTLX)"
2411 depends on MIPS_VPE_LOADER
2413 config MIPS_VPE_APSP_API_CMP
2416 depends on MIPS_VPE_APSP_API && MIPS_CMP
2418 config MIPS_VPE_APSP_API_MT
2421 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2424 bool "MIPS CMP framework support (DEPRECATED)"
2425 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2428 select SYS_SUPPORTS_SMP
2429 select WEAK_ORDERING
2432 Select this if you are using a bootloader which implements the "CMP
2433 framework" protocol (ie. YAMON) and want your kernel to make use of
2434 its ability to start secondary CPUs.
2436 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2440 bool "MIPS Coherent Processing System support"
2441 depends on SYS_SUPPORTS_MIPS_CPS
2443 select MIPS_CPS_PM if HOTPLUG_CPU
2445 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2446 select SYS_SUPPORTS_HOTPLUG_CPU
2447 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2448 select SYS_SUPPORTS_SMP
2449 select WEAK_ORDERING
2451 Select this if you wish to run an SMP kernel across multiple cores
2452 within a MIPS Coherent Processing System. When this option is
2453 enabled the kernel will probe for other cores and boot them with
2454 no external assistance. It is safe to enable this when hardware
2455 support is unavailable.
2468 config SB1_PASS_2_WORKAROUNDS
2470 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2473 config SB1_PASS_2_1_WORKAROUNDS
2475 depends on CPU_SB1 && CPU_SB1_PASS_2
2480 prompt "SmartMIPS or microMIPS ASE support"
2482 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2485 Select this if you want neither microMIPS nor SmartMIPS support
2487 config CPU_HAS_SMARTMIPS
2488 depends on SYS_SUPPORTS_SMARTMIPS
2491 SmartMIPS is a extension of the MIPS32 architecture aimed at
2492 increased security at both hardware and software level for
2493 smartcards. Enabling this option will allow proper use of the
2494 SmartMIPS instructions by Linux applications. However a kernel with
2495 this option will not work on a MIPS core without SmartMIPS core. If
2496 you don't know you probably don't have SmartMIPS and should say N
2499 config CPU_MICROMIPS
2500 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2503 When this option is enabled the kernel will be built using the
2509 bool "Support for the MIPS SIMD Architecture"
2510 depends on CPU_SUPPORTS_MSA
2511 depends on MIPS_FP_SUPPORT
2512 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2514 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2515 and a set of SIMD instructions to operate on them. When this option
2516 is enabled the kernel will support allocating & switching MSA
2517 vector register contexts. If you know that your kernel will only be
2518 running on CPUs which do not support MSA or that your userland will
2519 not be making use of it then you may wish to say N here to reduce
2520 the size & complexity of your kernel.
2533 config CPU_HAS_LOAD_STORE_LR
2536 CPU has support for unaligned load and store instructions:
2537 LWL, LWR, SWL, SWR (Load/store word left/right).
2538 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit systems).
2541 # Vectored interrupt mode is an R2 feature
2543 config CPU_MIPSR2_IRQ_VI
2547 # Extended interrupt mode is an R2 feature
2549 config CPU_MIPSR2_IRQ_EI
2554 depends on !CPU_R3000
2560 config CPU_DADDI_WORKAROUNDS
2563 config CPU_R4000_WORKAROUNDS
2565 select CPU_R4400_WORKAROUNDS
2567 config CPU_R4400_WORKAROUNDS
2570 config MIPS_ASID_SHIFT
2572 default 6 if CPU_R3000 || CPU_TX39XX
2573 default 4 if CPU_R8000
2576 config MIPS_ASID_BITS
2578 default 0 if MIPS_ASID_BITS_VARIABLE
2579 default 6 if CPU_R3000 || CPU_TX39XX
2582 config MIPS_ASID_BITS_VARIABLE
2585 config MIPS_CRC_SUPPORT
2589 # - Highmem only makes sense for the 32-bit kernel.
2590 # - The current highmem code will only work properly on physically indexed
2591 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2592 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2593 # moment we protect the user and offer the highmem option only on machines
2594 # where it's known to be safe. This will not offer highmem on a few systems
2595 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2596 # indexed CPUs but we're playing safe.
2597 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2598 # know they might have memory configurations that could make use of highmem
2602 bool "High Memory Support"
2603 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2605 config CPU_SUPPORTS_HIGHMEM
2608 config SYS_SUPPORTS_HIGHMEM
2611 config SYS_SUPPORTS_SMARTMIPS
2614 config SYS_SUPPORTS_MICROMIPS
2617 config SYS_SUPPORTS_MIPS16
2620 This option must be set if a kernel might be executed on a MIPS16-
2621 enabled CPU even if MIPS16 is not actually being used. In other
2622 words, it makes the kernel MIPS16-tolerant.
2624 config CPU_SUPPORTS_MSA
2627 config ARCH_FLATMEM_ENABLE
2629 depends on !NUMA && !CPU_LOONGSON2
2631 config ARCH_DISCONTIGMEM_ENABLE
2633 default y if SGI_IP27
2635 Say Y to support efficient handling of discontiguous physical memory,
2636 for architectures which are either NUMA (Non-Uniform Memory Access)
2637 or have huge holes in the physical address space for other reasons.
2638 See <file:Documentation/vm/numa.rst> for more.
2640 config ARCH_SPARSEMEM_ENABLE
2642 select SPARSEMEM_STATIC
2646 depends on SYS_SUPPORTS_NUMA
2648 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2649 Access). This option improves performance on systems with more
2650 than two nodes; on two node systems it is generally better to
2651 leave it disabled; on single node systems disable this option
2654 config SYS_SUPPORTS_NUMA
2658 bool "Relocatable kernel"
2659 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2661 This builds a kernel image that retains relocation information
2662 so it can be loaded someplace besides the default 1MB.
2663 The relocations make the kernel binary about 15% larger,
2664 but are discarded at runtime
2666 config RELOCATION_TABLE_SIZE
2667 hex "Relocation table size"
2668 depends on RELOCATABLE
2669 range 0x0 0x01000000
2670 default "0x00100000"
2672 A table of relocation data will be appended to the kernel binary
2673 and parsed at boot to fix up the relocated kernel.
2675 This option allows the amount of space reserved for the table to be
2676 adjusted, although the default of 1Mb should be ok in most cases.
2678 The build will fail and a valid size suggested if this is too small.
2680 If unsure, leave at the default value.
2682 config RANDOMIZE_BASE
2683 bool "Randomize the address of the kernel image"
2684 depends on RELOCATABLE
2686 Randomizes the physical and virtual address at which the
2687 kernel image is loaded, as a security feature that
2688 deters exploit attempts relying on knowledge of the location
2689 of kernel internals.
2691 Entropy is generated using any coprocessor 0 registers available.
2693 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2697 config RANDOMIZE_BASE_MAX_OFFSET
2698 hex "Maximum kASLR offset" if EXPERT
2699 depends on RANDOMIZE_BASE
2700 range 0x0 0x40000000 if EVA || 64BIT
2701 range 0x0 0x08000000
2702 default "0x01000000"
2704 When kASLR is active, this provides the maximum offset that will
2705 be applied to the kernel image. It should be set according to the
2706 amount of physical RAM available in the target system minus
2707 PHYSICAL_START and must be a power of 2.
2709 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2710 EVA or 64-bit. The default is 16Mb.
2715 depends on NEED_MULTIPLE_NODES
2717 config HW_PERF_EVENTS
2718 bool "Enable hardware performance counter support for perf events"
2719 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2722 Enable hardware performance counter support for perf events. If
2723 disabled, perf events will use software events only.
2726 bool "Multi-Processing support"
2727 depends on SYS_SUPPORTS_SMP
2729 This enables support for systems with more than one CPU. If you have
2730 a system with only one CPU, say N. If you have a system with more
2731 than one CPU, say Y.
2733 If you say N here, the kernel will run on uni- and multiprocessor
2734 machines, but will use only one CPU of a multiprocessor machine. If
2735 you say Y here, the kernel will run on many, but not all,
2736 uniprocessor machines. On a uniprocessor machine, the kernel
2737 will run faster if you say N here.
2739 People using multiprocessor machines who say Y here should also say
2740 Y to "Enhanced Real Time Clock Support", below.
2742 See also the SMP-HOWTO available at
2743 <http://www.tldp.org/docs.html#howto>.
2745 If you don't know what to do here, say N.
2748 bool "Support for hot-pluggable CPUs"
2749 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2751 Say Y here to allow turning CPUs off and on. CPUs can be
2752 controlled through /sys/devices/system/cpu.
2753 (Note: power management support will enable this option
2754 automatically on SMP systems. )
2755 Say N if you want to disable CPU hotplug.
2760 config SYS_SUPPORTS_MIPS_CMP
2763 config SYS_SUPPORTS_MIPS_CPS
2766 config SYS_SUPPORTS_SMP
2769 config NR_CPUS_DEFAULT_4
2772 config NR_CPUS_DEFAULT_8
2775 config NR_CPUS_DEFAULT_16
2778 config NR_CPUS_DEFAULT_32
2781 config NR_CPUS_DEFAULT_64
2785 int "Maximum number of CPUs (2-256)"
2788 default "4" if NR_CPUS_DEFAULT_4
2789 default "8" if NR_CPUS_DEFAULT_8
2790 default "16" if NR_CPUS_DEFAULT_16
2791 default "32" if NR_CPUS_DEFAULT_32
2792 default "64" if NR_CPUS_DEFAULT_64
2794 This allows you to specify the maximum number of CPUs which this
2795 kernel will support. The maximum supported value is 32 for 32-bit
2796 kernel and 64 for 64-bit kernels; the minimum value which makes
2797 sense is 1 for Qemu (useful only for kernel debugging purposes)
2798 and 2 for all others.
2800 This is purely to save memory - each supported CPU adds
2801 approximately eight kilobytes to the kernel image. For best
2802 performance should round up your number of processors to the next
2805 config MIPS_PERF_SHARED_TC_COUNTERS
2808 config MIPS_NR_CPU_NR_MAP_1024
2811 config MIPS_NR_CPU_NR_MAP
2814 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2815 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2818 # Timer Interrupt Frequency Configuration
2822 prompt "Timer frequency"
2825 Allows the configuration of the timer frequency.
2828 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2831 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2834 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2837 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2840 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2843 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2846 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2849 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2853 config SYS_SUPPORTS_24HZ
2856 config SYS_SUPPORTS_48HZ
2859 config SYS_SUPPORTS_100HZ
2862 config SYS_SUPPORTS_128HZ
2865 config SYS_SUPPORTS_250HZ
2868 config SYS_SUPPORTS_256HZ
2871 config SYS_SUPPORTS_1000HZ
2874 config SYS_SUPPORTS_1024HZ
2877 config SYS_SUPPORTS_ARBIT_HZ
2879 default y if !SYS_SUPPORTS_24HZ && \
2880 !SYS_SUPPORTS_48HZ && \
2881 !SYS_SUPPORTS_100HZ && \
2882 !SYS_SUPPORTS_128HZ && \
2883 !SYS_SUPPORTS_250HZ && \
2884 !SYS_SUPPORTS_256HZ && \
2885 !SYS_SUPPORTS_1000HZ && \
2886 !SYS_SUPPORTS_1024HZ
2892 default 100 if HZ_100
2893 default 128 if HZ_128
2894 default 250 if HZ_250
2895 default 256 if HZ_256
2896 default 1000 if HZ_1000
2897 default 1024 if HZ_1024
2900 def_bool HIGH_RES_TIMERS
2903 bool "Kexec system call"
2906 kexec is a system call that implements the ability to shutdown your
2907 current kernel, and to start another kernel. It is like a reboot
2908 but it is independent of the system firmware. And like a reboot
2909 you can start any kernel with it, not just Linux.
2911 The name comes from the similarity to the exec system call.
2913 It is an ongoing process to be certain the hardware in a machine
2914 is properly shutdown, so do not be surprised if this code does not
2915 initially work for you. As of this writing the exact hardware
2916 interface is strongly in flux, so no good recommendation can be
2920 bool "Kernel crash dumps"
2922 Generate crash dump after being started by kexec.
2923 This should be normally only set in special crash dump kernels
2924 which are loaded in the main kernel with kexec-tools into
2925 a specially reserved region and then later executed after
2926 a crash by kdump/kexec. The crash dump kernel must be compiled
2927 to a memory address not used by the main kernel or firmware using
2930 config PHYSICAL_START
2931 hex "Physical address where the kernel is loaded"
2932 default "0xffffffff84000000"
2933 depends on CRASH_DUMP
2935 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2936 If you plan to use kernel for capturing the crash dump change
2937 this value to start of the reserved region (the "X" value as
2938 specified in the "crashkernel=YM@XM" command line boot parameter
2939 passed to the panic-ed kernel).
2942 bool "Enable seccomp to safely compute untrusted bytecode"
2946 This kernel feature is useful for number crunching applications
2947 that may need to compute untrusted bytecode during their
2948 execution. By using pipes or other transports made available to
2949 the process as file descriptors supporting the read/write
2950 syscalls, it's possible to isolate those applications in
2951 their own address space using seccomp. Once seccomp is
2952 enabled via /proc/<pid>/seccomp, it cannot be disabled
2953 and the task is only allowed to execute a few safe syscalls
2954 defined by each seccomp mode.
2956 If unsure, say Y. Only embedded should say N here.
2958 config MIPS_O32_FP64_SUPPORT
2959 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
2960 depends on 32BIT || MIPS32_O32
2962 When this is enabled, the kernel will support use of 64-bit floating
2963 point registers with binaries using the O32 ABI along with the
2964 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2965 32-bit MIPS systems this support is at the cost of increasing the
2966 size and complexity of the compiled FPU emulator. Thus if you are
2967 running a MIPS32 system and know that none of your userland binaries
2968 will require 64-bit floating point, you may wish to reduce the size
2969 of your kernel & potentially improve FP emulation performance by
2972 Although binutils currently supports use of this flag the details
2973 concerning its effect upon the O32 ABI in userland are still being
2974 worked on. In order to avoid userland becoming dependant upon current
2975 behaviour before the details have been finalised, this option should
2976 be considered experimental and only enabled by those working upon
2984 select OF_EARLY_FLATTREE
2994 prompt "Kernel appended dtb support" if USE_OF
2995 default MIPS_NO_APPENDED_DTB
2997 config MIPS_NO_APPENDED_DTB
3000 Do not enable appended dtb support.
3002 config MIPS_ELF_APPENDED_DTB
3005 With this option, the boot code will look for a device tree binary
3006 DTB) included in the vmlinux ELF section .appended_dtb. By default
3007 it is empty and the DTB can be appended using binutils command
3010 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
3012 This is meant as a backward compatiblity convenience for those
3013 systems with a bootloader that can't be upgraded to accommodate
3014 the documented boot protocol using a device tree.
3016 config MIPS_RAW_APPENDED_DTB
3017 bool "vmlinux.bin or vmlinuz.bin"
3019 With this option, the boot code will look for a device tree binary
3020 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
3021 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
3023 This is meant as a backward compatibility convenience for those
3024 systems with a bootloader that can't be upgraded to accommodate
3025 the documented boot protocol using a device tree.
3027 Beware that there is very little in terms of protection against
3028 this option being confused by leftover garbage in memory that might
3029 look like a DTB header after a reboot if no actual DTB is appended
3030 to vmlinux.bin. Do not leave this option active in a production kernel
3031 if you don't intend to always append a DTB.
3035 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
3036 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
3039 default MIPS_CMDLINE_FROM_BOOTLOADER
3041 config MIPS_CMDLINE_FROM_DTB
3043 bool "Dtb kernel arguments if available"
3045 config MIPS_CMDLINE_DTB_EXTEND
3047 bool "Extend dtb kernel arguments with bootloader arguments"
3049 config MIPS_CMDLINE_FROM_BOOTLOADER
3050 bool "Bootloader kernel arguments if available"
3052 config MIPS_CMDLINE_BUILTIN_EXTEND
3053 depends on CMDLINE_BOOL
3054 bool "Extend builtin kernel arguments with bootloader arguments"
3059 config LOCKDEP_SUPPORT
3063 config STACKTRACE_SUPPORT
3067 config HAVE_LATENCYTOP_SUPPORT
3071 config PGTABLE_LEVELS
3073 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3074 default 3 if 64BIT && !PAGE_SIZE_64KB
3077 config MIPS_AUTO_PFN_OFFSET
3080 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3082 config PCI_DRIVERS_GENERIC
3083 select PCI_DOMAINS_GENERIC if PCI
3086 config PCI_DRIVERS_LEGACY
3087 def_bool !PCI_DRIVERS_GENERIC
3088 select NO_GENERIC_PCI_IOPORT_MAP
3089 select PCI_DOMAINS if PCI
3092 # ISA support is now enabled via select. Too many systems still have the one
3093 # or other ISA chip on the board that users don't know about so don't expect
3094 # users to choose the right thing ...
3100 bool "TURBOchannel support"
3101 depends on MACH_DECSTATION
3103 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3104 processors. TURBOchannel programming specifications are available
3106 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3108 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3109 Linux driver support status is documented at:
3110 <http://www.linux-mips.org/wiki/DECstation>
3116 config ARCH_MMAP_RND_BITS_MIN
3120 config ARCH_MMAP_RND_BITS_MAX
3124 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3127 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3134 select MIPS_EXTERNAL_TIMER
3147 config MIPS32_COMPAT
3153 config SYSVIPC_COMPAT
3157 bool "Kernel support for o32 binaries"
3159 select ARCH_WANT_OLD_COMPAT_IPC
3161 select MIPS32_COMPAT
3162 select SYSVIPC_COMPAT if SYSVIPC
3164 Select this option if you want to run o32 binaries. These are pure
3165 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3166 existing binaries are in this format.
3171 bool "Kernel support for n32 binaries"
3173 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3175 select MIPS32_COMPAT
3176 select SYSVIPC_COMPAT if SYSVIPC
3178 Select this option if you want to run n32 binaries. These are
3179 64-bit binaries using 32-bit quantities for addressing and certain
3180 data that would normally be 64-bit. They are used in special
3187 default y if MIPS32_O32 || MIPS32_N32
3190 menu "Power management options"
3192 config ARCH_HIBERNATION_POSSIBLE
3194 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3196 config ARCH_SUSPEND_POSSIBLE
3198 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3200 source "kernel/power/Kconfig"
3204 config MIPS_EXTERNAL_TIMER
3207 menu "CPU Power Management"
3209 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3210 source "drivers/cpufreq/Kconfig"
3213 source "drivers/cpuidle/Kconfig"
3217 source "drivers/firmware/Kconfig"
3219 source "arch/mips/kvm/Kconfig"