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 IRQ_DOMAIN_HIERARCHY
678 select NR_CPUS_DEFAULT_64
679 select PCI_DRIVERS_GENERIC
680 select PCI_XTALK_BRIDGE
681 select SYS_HAS_CPU_R10000
682 select SYS_SUPPORTS_64BIT_KERNEL
683 select SYS_SUPPORTS_BIG_ENDIAN
684 select SYS_SUPPORTS_NUMA
685 select SYS_SUPPORTS_SMP
686 select MIPS_L1_CACHE_SHIFT_7
688 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
689 workstations. To compile a Linux kernel that runs on these, say Y
693 bool "SGI IP28 (Indigo2 R10k)"
696 select ARCH_MIGHT_HAVE_PC_SERIO
700 select DEFAULT_SGI_PARTITION
701 select DMA_NONCOHERENT
702 select GENERIC_ISA_DMA_SUPPORT_BROKEN
708 select SGI_HAS_INDYDOG
714 select SYS_HAS_CPU_R10000
716 # Disable EARLY_PRINTK for now since it leads to overwritten prom
717 # memory during early boot on some machines.
719 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
720 # for a more details discussion
722 # select SYS_HAS_EARLY_PRINTK
723 select SYS_SUPPORTS_64BIT_KERNEL
724 select SYS_SUPPORTS_BIG_ENDIAN
725 select MIPS_L1_CACHE_SHIFT_7
727 This is the SGI Indigo2 with R10000 processor. To compile a Linux
728 kernel that runs on these, say Y here.
732 select ARCH_HAS_PHYS_TO_DMA
738 select DMA_NONCOHERENT
741 select R5000_CPU_SCACHE
742 select RM7000_CPU_SCACHE
743 select SYS_HAS_CPU_R5000
744 select SYS_HAS_CPU_R10000 if BROKEN
745 select SYS_HAS_CPU_RM7000
746 select SYS_HAS_CPU_NEVADA
747 select SYS_SUPPORTS_64BIT_KERNEL
748 select SYS_SUPPORTS_BIG_ENDIAN
750 If you want this kernel to run on SGI O2 workstation, say Y here.
753 bool "Sibyte BCM91120C-CRhine"
755 select SIBYTE_BCM1120
757 select SYS_HAS_CPU_SB1
758 select SYS_SUPPORTS_BIG_ENDIAN
759 select SYS_SUPPORTS_LITTLE_ENDIAN
762 bool "Sibyte BCM91120x-Carmel"
764 select SIBYTE_BCM1120
766 select SYS_HAS_CPU_SB1
767 select SYS_SUPPORTS_BIG_ENDIAN
768 select SYS_SUPPORTS_LITTLE_ENDIAN
771 bool "Sibyte BCM91125C-CRhone"
773 select SIBYTE_BCM1125
775 select SYS_HAS_CPU_SB1
776 select SYS_SUPPORTS_BIG_ENDIAN
777 select SYS_SUPPORTS_HIGHMEM
778 select SYS_SUPPORTS_LITTLE_ENDIAN
781 bool "Sibyte BCM91125E-Rhone"
783 select SIBYTE_BCM1125H
785 select SYS_HAS_CPU_SB1
786 select SYS_SUPPORTS_BIG_ENDIAN
787 select SYS_SUPPORTS_LITTLE_ENDIAN
790 bool "Sibyte BCM91250A-SWARM"
792 select HAVE_PATA_PLATFORM
795 select SYS_HAS_CPU_SB1
796 select SYS_SUPPORTS_BIG_ENDIAN
797 select SYS_SUPPORTS_HIGHMEM
798 select SYS_SUPPORTS_LITTLE_ENDIAN
799 select ZONE_DMA32 if 64BIT
800 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
802 config SIBYTE_LITTLESUR
803 bool "Sibyte BCM91250C2-LittleSur"
805 select HAVE_PATA_PLATFORM
808 select SYS_HAS_CPU_SB1
809 select SYS_SUPPORTS_BIG_ENDIAN
810 select SYS_SUPPORTS_HIGHMEM
811 select SYS_SUPPORTS_LITTLE_ENDIAN
812 select ZONE_DMA32 if 64BIT
814 config SIBYTE_SENTOSA
815 bool "Sibyte BCM91250E-Sentosa"
819 select SYS_HAS_CPU_SB1
820 select SYS_SUPPORTS_BIG_ENDIAN
821 select SYS_SUPPORTS_LITTLE_ENDIAN
822 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
825 bool "Sibyte BCM91480B-BigSur"
827 select NR_CPUS_DEFAULT_4
828 select SIBYTE_BCM1x80
830 select SYS_HAS_CPU_SB1
831 select SYS_SUPPORTS_BIG_ENDIAN
832 select SYS_SUPPORTS_HIGHMEM
833 select SYS_SUPPORTS_LITTLE_ENDIAN
834 select ZONE_DMA32 if 64BIT
835 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
838 bool "SNI RM200/300/400"
839 select FW_ARC if CPU_LITTLE_ENDIAN
840 select FW_ARC32 if CPU_LITTLE_ENDIAN
841 select FW_SNIPROM if CPU_BIG_ENDIAN
842 select ARCH_MAY_HAVE_PC_FDC
843 select ARCH_MIGHT_HAVE_PC_PARPORT
844 select ARCH_MIGHT_HAVE_PC_SERIO
848 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
849 select DMA_NONCOHERENT
850 select GENERIC_ISA_DMA
852 select HAVE_PCSPKR_PLATFORM
858 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
859 select SYS_HAS_CPU_R4X00
860 select SYS_HAS_CPU_R5000
861 select SYS_HAS_CPU_R10000
862 select R5000_CPU_SCACHE
863 select SYS_HAS_EARLY_PRINTK
864 select SYS_SUPPORTS_32BIT_KERNEL
865 select SYS_SUPPORTS_64BIT_KERNEL
866 select SYS_SUPPORTS_BIG_ENDIAN
867 select SYS_SUPPORTS_HIGHMEM
868 select SYS_SUPPORTS_LITTLE_ENDIAN
870 The SNI RM200/300/400 are MIPS-based machines manufactured by
871 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
872 Technology and now in turn merged with Fujitsu. Say Y here to
873 support this machine type.
876 bool "Toshiba TX39 series based machines"
879 bool "Toshiba TX49 series based machines"
881 config MIKROTIK_RB532
882 bool "Mikrotik RB532 boards"
885 select DMA_NONCOHERENT
888 select SYS_HAS_CPU_MIPS32_R1
889 select SYS_SUPPORTS_32BIT_KERNEL
890 select SYS_SUPPORTS_LITTLE_ENDIAN
894 select MIPS_L1_CACHE_SHIFT_4
896 Support the Mikrotik(tm) RouterBoard 532 series,
897 based on the IDT RC32434 SoC.
899 config CAVIUM_OCTEON_SOC
900 bool "Cavium Networks Octeon SoC based boards"
902 select ARCH_HAS_PHYS_TO_DMA
904 select PHYS_ADDR_T_64BIT
905 select SYS_SUPPORTS_64BIT_KERNEL
906 select SYS_SUPPORTS_BIG_ENDIAN
908 select EDAC_ATOMIC_SCRUB
909 select SYS_SUPPORTS_LITTLE_ENDIAN
910 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
911 select SYS_HAS_EARLY_PRINTK
912 select SYS_HAS_CPU_CAVIUM_OCTEON
919 select ARCH_SPARSEMEM_ENABLE
920 select SYS_SUPPORTS_SMP
921 select NR_CPUS_DEFAULT_64
922 select MIPS_NR_CPU_NR_MAP_1024
924 select MTD_COMPLEX_MAPPINGS
926 select SYS_SUPPORTS_RELOCATABLE
928 This option supports all of the Octeon reference boards from Cavium
929 Networks. It builds a kernel that dynamically determines the Octeon
930 CPU type and supports all known board reference implementations.
931 Some of the supported boards are:
938 Say Y here for most Octeon reference boards.
941 bool "Netlogic XLR/XLS based systems"
944 select SYS_HAS_CPU_XLR
945 select SYS_SUPPORTS_SMP
948 select SYS_SUPPORTS_32BIT_KERNEL
949 select SYS_SUPPORTS_64BIT_KERNEL
950 select PHYS_ADDR_T_64BIT
951 select SYS_SUPPORTS_BIG_ENDIAN
952 select SYS_SUPPORTS_HIGHMEM
953 select NR_CPUS_DEFAULT_32
957 select ZONE_DMA32 if 64BIT
959 select SYS_HAS_EARLY_PRINTK
960 select SYS_SUPPORTS_ZBOOT
961 select SYS_SUPPORTS_ZBOOT_UART16550
963 Support for systems based on Netlogic XLR and XLS processors.
964 Say Y here if you have a XLR or XLS based board.
967 bool "Netlogic XLP based systems"
970 select SYS_HAS_CPU_XLP
971 select SYS_SUPPORTS_SMP
973 select SYS_SUPPORTS_32BIT_KERNEL
974 select SYS_SUPPORTS_64BIT_KERNEL
975 select PHYS_ADDR_T_64BIT
977 select SYS_SUPPORTS_BIG_ENDIAN
978 select SYS_SUPPORTS_LITTLE_ENDIAN
979 select SYS_SUPPORTS_HIGHMEM
980 select NR_CPUS_DEFAULT_32
984 select ZONE_DMA32 if 64BIT
986 select SYS_HAS_EARLY_PRINTK
988 select SYS_SUPPORTS_ZBOOT
989 select SYS_SUPPORTS_ZBOOT_UART16550
991 This board is based on Netlogic XLP Processor.
992 Say Y here if you have a XLP based board.
995 bool "Para-Virtualized guest system"
998 select SYS_SUPPORTS_64BIT_KERNEL
999 select SYS_SUPPORTS_32BIT_KERNEL
1000 select SYS_SUPPORTS_BIG_ENDIAN
1001 select SYS_SUPPORTS_SMP
1002 select NR_CPUS_DEFAULT_4
1003 select SYS_HAS_EARLY_PRINTK
1004 select SYS_HAS_CPU_MIPS32_R2
1005 select SYS_HAS_CPU_MIPS64_R2
1006 select SYS_HAS_CPU_CAVIUM_OCTEON
1008 select SWAP_IO_SPACE
1010 This option supports guest running under ????
1014 source "arch/mips/alchemy/Kconfig"
1015 source "arch/mips/ath25/Kconfig"
1016 source "arch/mips/ath79/Kconfig"
1017 source "arch/mips/bcm47xx/Kconfig"
1018 source "arch/mips/bcm63xx/Kconfig"
1019 source "arch/mips/bmips/Kconfig"
1020 source "arch/mips/generic/Kconfig"
1021 source "arch/mips/jazz/Kconfig"
1022 source "arch/mips/jz4740/Kconfig"
1023 source "arch/mips/lantiq/Kconfig"
1024 source "arch/mips/lasat/Kconfig"
1025 source "arch/mips/pic32/Kconfig"
1026 source "arch/mips/pistachio/Kconfig"
1027 source "arch/mips/pmcs-msp71xx/Kconfig"
1028 source "arch/mips/ralink/Kconfig"
1029 source "arch/mips/sgi-ip27/Kconfig"
1030 source "arch/mips/sibyte/Kconfig"
1031 source "arch/mips/txx9/Kconfig"
1032 source "arch/mips/vr41xx/Kconfig"
1033 source "arch/mips/cavium-octeon/Kconfig"
1034 source "arch/mips/loongson32/Kconfig"
1035 source "arch/mips/loongson64/Kconfig"
1036 source "arch/mips/netlogic/Kconfig"
1037 source "arch/mips/paravirt/Kconfig"
1041 config GENERIC_HWEIGHT
1045 config GENERIC_CALIBRATE_DELAY
1049 config SCHED_OMIT_FRAME_POINTER
1054 # Select some configuration options automatically based on user selections.
1059 config ARCH_MAY_HAVE_PC_FDC
1095 config MIPS_CLOCK_VSYSCALL
1096 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1105 config ARCH_SUPPORTS_UPROBES
1108 config DMA_MAYBE_COHERENT
1109 select ARCH_HAS_DMA_COHERENCE_H
1110 select DMA_NONCOHERENT
1113 config DMA_PERDEV_COHERENT
1115 select ARCH_HAS_SETUP_DMA_OPS
1116 select DMA_NONCOHERENT
1118 config DMA_NONCOHERENT
1120 select ARCH_HAS_DMA_MMAP_PGPROT
1121 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1122 select NEED_DMA_MAP_STATE
1123 select ARCH_HAS_DMA_COHERENT_TO_PFN
1124 select DMA_NONCOHERENT_CACHE_SYNC
1126 config SYS_HAS_EARLY_PRINTK
1129 config SYS_SUPPORTS_HOTPLUG_CPU
1132 config MIPS_BONITO64
1147 config NO_IOPORT_MAP
1152 default y if !CPU_HAS_LOAD_STORE_LR
1154 config GENERIC_ISA_DMA
1156 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1159 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1161 select GENERIC_ISA_DMA
1166 config HOLES_IN_ZONE
1169 config SYS_SUPPORTS_RELOCATABLE
1172 Selected if the platform supports relocating the kernel.
1173 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1174 to allow access to command line and entropy sources.
1176 config MIPS_CBPF_JIT
1178 depends on BPF_JIT && HAVE_CBPF_JIT
1180 config MIPS_EBPF_JIT
1182 depends on BPF_JIT && HAVE_EBPF_JIT
1186 # Endianness selection. Sufficiently obscure so many users don't know what to
1187 # answer,so we try hard to limit the available choices. Also the use of a
1188 # choice statement should be more obvious to the user.
1191 prompt "Endianness selection"
1193 Some MIPS machines can be configured for either little or big endian
1194 byte order. These modes require different kernels and a different
1195 Linux distribution. In general there is one preferred byteorder for a
1196 particular system but some systems are just as commonly used in the
1197 one or the other endianness.
1199 config CPU_BIG_ENDIAN
1201 depends on SYS_SUPPORTS_BIG_ENDIAN
1203 config CPU_LITTLE_ENDIAN
1204 bool "Little endian"
1205 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1212 config SYS_SUPPORTS_APM_EMULATION
1215 config SYS_SUPPORTS_BIG_ENDIAN
1218 config SYS_SUPPORTS_LITTLE_ENDIAN
1221 config SYS_SUPPORTS_HUGETLBFS
1223 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1226 config MIPS_HUGE_TLB_SUPPORT
1227 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1244 config PCI_GT64XXX_PCI0
1247 config PCI_XTALK_BRIDGE
1250 config NO_EXCEPT_FILL
1257 select DMA_NONCOHERENT
1259 select SWAP_IO_SPACE
1260 select SYS_HAS_CPU_R5500
1261 select SYS_SUPPORTS_32BIT_KERNEL
1262 select SYS_SUPPORTS_64BIT_KERNEL
1263 select SYS_SUPPORTS_BIG_ENDIAN
1270 select DMA_NONCOHERENT
1271 select SYS_HAS_CPU_MIPS32_R2
1272 select SYS_SUPPORTS_32BIT_KERNEL
1273 select SYS_SUPPORTS_LITTLE_ENDIAN
1274 select SYS_SUPPORTS_BIG_ENDIAN
1275 select SYS_SUPPORTS_MIPS16
1276 select CPU_MIPSR2_IRQ_VI
1285 config SWAP_IO_SPACE
1288 config SGI_HAS_INDYDOG
1300 config SGI_HAS_ZILOG
1303 config SGI_HAS_I8042
1306 config DEFAULT_SGI_PARTITION
1318 config MIPS_L1_CACHE_SHIFT_4
1321 config MIPS_L1_CACHE_SHIFT_5
1324 config MIPS_L1_CACHE_SHIFT_6
1327 config MIPS_L1_CACHE_SHIFT_7
1330 config MIPS_L1_CACHE_SHIFT
1332 default "7" if MIPS_L1_CACHE_SHIFT_7
1333 default "6" if MIPS_L1_CACHE_SHIFT_6
1334 default "5" if MIPS_L1_CACHE_SHIFT_5
1335 default "4" if MIPS_L1_CACHE_SHIFT_4
1338 config HAVE_STD_PC_SERIAL_PORT
1342 bool "ARC console support"
1343 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1347 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1352 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1361 menu "CPU selection"
1367 config CPU_LOONGSON3
1368 bool "Loongson 3 CPU"
1369 depends on SYS_HAS_CPU_LOONGSON3
1370 select ARCH_HAS_PHYS_TO_DMA
1371 select CPU_SUPPORTS_64BIT_KERNEL
1372 select CPU_SUPPORTS_HIGHMEM
1373 select CPU_SUPPORTS_HUGEPAGES
1374 select CPU_HAS_LOAD_STORE_LR
1375 select WEAK_ORDERING
1376 select WEAK_REORDERING_BEYOND_LLSC
1377 select MIPS_PGD_C0_CONTEXT
1378 select MIPS_L1_CACHE_SHIFT_6
1382 The Loongson 3 processor implements the MIPS64R2 instruction
1383 set with many extensions.
1385 config LOONGSON3_ENHANCEMENT
1386 bool "New Loongson 3 CPU Enhancements"
1389 select CPU_HAS_PREFETCH
1390 depends on CPU_LOONGSON3
1392 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1393 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1394 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1395 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1396 Fast TLB refill support, etc.
1398 This option enable those enhancements which are not probed at run
1399 time. If you want a generic kernel to run on all Loongson 3 machines,
1400 please say 'N' here. If you want a high-performance kernel to run on
1401 new Loongson 3 machines only, please say 'Y' here.
1403 config CPU_LOONGSON3_WORKAROUNDS
1404 bool "Old Loongson 3 LLSC Workarounds"
1406 depends on CPU_LOONGSON3
1408 Loongson 3 processors have the llsc issues which require workarounds.
1409 Without workarounds the system may hang unexpectedly.
1411 Newer Loongson 3 will fix these issues and no workarounds are needed.
1412 The workarounds have no significant side effect on them but may
1413 decrease the performance of the system so this option should be
1414 disabled unless the kernel is intended to be run on old systems.
1416 If unsure, please say Y.
1418 config CPU_LOONGSON2E
1420 depends on SYS_HAS_CPU_LOONGSON2E
1421 select CPU_LOONGSON2
1423 The Loongson 2E processor implements the MIPS III instruction set
1424 with many extensions.
1426 It has an internal FPGA northbridge, which is compatible to
1429 config CPU_LOONGSON2F
1431 depends on SYS_HAS_CPU_LOONGSON2F
1432 select CPU_LOONGSON2
1435 The Loongson 2F processor implements the MIPS III instruction set
1436 with many extensions.
1438 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1439 have a similar programming interface with FPGA northbridge used in
1442 config CPU_LOONGSON1B
1444 depends on SYS_HAS_CPU_LOONGSON1B
1445 select CPU_LOONGSON1
1446 select LEDS_GPIO_REGISTER
1448 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1449 Release 1 instruction set and part of the MIPS32 Release 2
1452 config CPU_LOONGSON1C
1454 depends on SYS_HAS_CPU_LOONGSON1C
1455 select CPU_LOONGSON1
1456 select LEDS_GPIO_REGISTER
1458 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1459 Release 1 instruction set and part of the MIPS32 Release 2
1462 config CPU_MIPS32_R1
1463 bool "MIPS32 Release 1"
1464 depends on SYS_HAS_CPU_MIPS32_R1
1465 select CPU_HAS_PREFETCH
1466 select CPU_HAS_LOAD_STORE_LR
1467 select CPU_SUPPORTS_32BIT_KERNEL
1468 select CPU_SUPPORTS_HIGHMEM
1470 Choose this option to build a kernel for release 1 or later of the
1471 MIPS32 architecture. Most modern embedded systems with a 32-bit
1472 MIPS processor are based on a MIPS32 processor. If you know the
1473 specific type of processor in your system, choose those that one
1474 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1475 Release 2 of the MIPS32 architecture is available since several
1476 years so chances are you even have a MIPS32 Release 2 processor
1477 in which case you should choose CPU_MIPS32_R2 instead for better
1480 config CPU_MIPS32_R2
1481 bool "MIPS32 Release 2"
1482 depends on SYS_HAS_CPU_MIPS32_R2
1483 select CPU_HAS_PREFETCH
1484 select CPU_HAS_LOAD_STORE_LR
1485 select CPU_SUPPORTS_32BIT_KERNEL
1486 select CPU_SUPPORTS_HIGHMEM
1487 select CPU_SUPPORTS_MSA
1490 Choose this option to build a kernel for release 2 or later of the
1491 MIPS32 architecture. Most modern embedded systems with a 32-bit
1492 MIPS processor are based on a MIPS32 processor. If you know the
1493 specific type of processor in your system, choose those that one
1494 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1496 config CPU_MIPS32_R6
1497 bool "MIPS32 Release 6"
1498 depends on SYS_HAS_CPU_MIPS32_R6
1499 select CPU_HAS_PREFETCH
1500 select CPU_SUPPORTS_32BIT_KERNEL
1501 select CPU_SUPPORTS_HIGHMEM
1502 select CPU_SUPPORTS_MSA
1504 select MIPS_O32_FP64_SUPPORT
1506 Choose this option to build a kernel for release 6 or later of the
1507 MIPS32 architecture. New MIPS processors, starting with the Warrior
1508 family, are based on a MIPS32r6 processor. If you own an older
1509 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1511 config CPU_MIPS64_R1
1512 bool "MIPS64 Release 1"
1513 depends on SYS_HAS_CPU_MIPS64_R1
1514 select CPU_HAS_PREFETCH
1515 select CPU_HAS_LOAD_STORE_LR
1516 select CPU_SUPPORTS_32BIT_KERNEL
1517 select CPU_SUPPORTS_64BIT_KERNEL
1518 select CPU_SUPPORTS_HIGHMEM
1519 select CPU_SUPPORTS_HUGEPAGES
1521 Choose this option to build a kernel for release 1 or later of the
1522 MIPS64 architecture. Many modern embedded systems with a 64-bit
1523 MIPS processor are based on a MIPS64 processor. If you know the
1524 specific type of processor in your system, choose those that one
1525 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1526 Release 2 of the MIPS64 architecture is available since several
1527 years so chances are you even have a MIPS64 Release 2 processor
1528 in which case you should choose CPU_MIPS64_R2 instead for better
1531 config CPU_MIPS64_R2
1532 bool "MIPS64 Release 2"
1533 depends on SYS_HAS_CPU_MIPS64_R2
1534 select CPU_HAS_PREFETCH
1535 select CPU_HAS_LOAD_STORE_LR
1536 select CPU_SUPPORTS_32BIT_KERNEL
1537 select CPU_SUPPORTS_64BIT_KERNEL
1538 select CPU_SUPPORTS_HIGHMEM
1539 select CPU_SUPPORTS_HUGEPAGES
1540 select CPU_SUPPORTS_MSA
1543 Choose this option to build a kernel for release 2 or later of the
1544 MIPS64 architecture. Many modern embedded systems with a 64-bit
1545 MIPS processor are based on a MIPS64 processor. If you know the
1546 specific type of processor in your system, choose those that one
1547 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1549 config CPU_MIPS64_R6
1550 bool "MIPS64 Release 6"
1551 depends on SYS_HAS_CPU_MIPS64_R6
1552 select CPU_HAS_PREFETCH
1553 select CPU_SUPPORTS_32BIT_KERNEL
1554 select CPU_SUPPORTS_64BIT_KERNEL
1555 select CPU_SUPPORTS_HIGHMEM
1556 select CPU_SUPPORTS_HUGEPAGES
1557 select CPU_SUPPORTS_MSA
1558 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1561 Choose this option to build a kernel for release 6 or later of the
1562 MIPS64 architecture. New MIPS processors, starting with the Warrior
1563 family, are based on a MIPS64r6 processor. If you own an older
1564 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1568 depends on SYS_HAS_CPU_R3000
1570 select CPU_HAS_LOAD_STORE_LR
1571 select CPU_SUPPORTS_32BIT_KERNEL
1572 select CPU_SUPPORTS_HIGHMEM
1574 Please make sure to pick the right CPU type. Linux/MIPS is not
1575 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1576 *not* work on R4000 machines and vice versa. However, since most
1577 of the supported machines have an R4000 (or similar) CPU, R4x00
1578 might be a safe bet. If the resulting kernel does not work,
1579 try to recompile with R3000.
1583 depends on SYS_HAS_CPU_TX39XX
1584 select CPU_SUPPORTS_32BIT_KERNEL
1585 select CPU_HAS_LOAD_STORE_LR
1589 depends on SYS_HAS_CPU_VR41XX
1590 select CPU_SUPPORTS_32BIT_KERNEL
1591 select CPU_SUPPORTS_64BIT_KERNEL
1592 select CPU_HAS_LOAD_STORE_LR
1594 The options selects support for the NEC VR4100 series of processors.
1595 Only choose this option if you have one of these processors as a
1596 kernel built with this option will not run on any other type of
1597 processor or vice versa.
1601 depends on SYS_HAS_CPU_R4300
1602 select CPU_SUPPORTS_32BIT_KERNEL
1603 select CPU_SUPPORTS_64BIT_KERNEL
1604 select CPU_HAS_LOAD_STORE_LR
1606 MIPS Technologies R4300-series processors.
1610 depends on SYS_HAS_CPU_R4X00
1611 select CPU_SUPPORTS_32BIT_KERNEL
1612 select CPU_SUPPORTS_64BIT_KERNEL
1613 select CPU_SUPPORTS_HUGEPAGES
1614 select CPU_HAS_LOAD_STORE_LR
1616 MIPS Technologies R4000-series processors other than 4300, including
1617 the R4000, R4400, R4600, and 4700.
1621 depends on SYS_HAS_CPU_TX49XX
1622 select CPU_HAS_PREFETCH
1623 select CPU_HAS_LOAD_STORE_LR
1624 select CPU_SUPPORTS_32BIT_KERNEL
1625 select CPU_SUPPORTS_64BIT_KERNEL
1626 select CPU_SUPPORTS_HUGEPAGES
1630 depends on SYS_HAS_CPU_R5000
1631 select CPU_SUPPORTS_32BIT_KERNEL
1632 select CPU_SUPPORTS_64BIT_KERNEL
1633 select CPU_SUPPORTS_HUGEPAGES
1634 select CPU_HAS_LOAD_STORE_LR
1636 MIPS Technologies R5000-series processors other than the Nevada.
1640 depends on SYS_HAS_CPU_R5432
1641 select CPU_SUPPORTS_32BIT_KERNEL
1642 select CPU_SUPPORTS_64BIT_KERNEL
1643 select CPU_SUPPORTS_HUGEPAGES
1644 select CPU_HAS_LOAD_STORE_LR
1648 depends on SYS_HAS_CPU_R5500
1649 select CPU_SUPPORTS_32BIT_KERNEL
1650 select CPU_SUPPORTS_64BIT_KERNEL
1651 select CPU_SUPPORTS_HUGEPAGES
1652 select CPU_HAS_LOAD_STORE_LR
1654 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1659 depends on SYS_HAS_CPU_NEVADA
1660 select CPU_SUPPORTS_32BIT_KERNEL
1661 select CPU_SUPPORTS_64BIT_KERNEL
1662 select CPU_SUPPORTS_HUGEPAGES
1663 select CPU_HAS_LOAD_STORE_LR
1665 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1669 depends on SYS_HAS_CPU_R8000
1670 select CPU_HAS_PREFETCH
1671 select CPU_HAS_LOAD_STORE_LR
1672 select CPU_SUPPORTS_64BIT_KERNEL
1674 MIPS Technologies R8000 processors. Note these processors are
1675 uncommon and the support for them is incomplete.
1679 depends on SYS_HAS_CPU_R10000
1680 select CPU_HAS_PREFETCH
1681 select CPU_HAS_LOAD_STORE_LR
1682 select CPU_SUPPORTS_32BIT_KERNEL
1683 select CPU_SUPPORTS_64BIT_KERNEL
1684 select CPU_SUPPORTS_HIGHMEM
1685 select CPU_SUPPORTS_HUGEPAGES
1687 MIPS Technologies R10000-series processors.
1691 depends on SYS_HAS_CPU_RM7000
1692 select CPU_HAS_PREFETCH
1693 select CPU_HAS_LOAD_STORE_LR
1694 select CPU_SUPPORTS_32BIT_KERNEL
1695 select CPU_SUPPORTS_64BIT_KERNEL
1696 select CPU_SUPPORTS_HIGHMEM
1697 select CPU_SUPPORTS_HUGEPAGES
1701 depends on SYS_HAS_CPU_SB1
1702 select CPU_HAS_LOAD_STORE_LR
1703 select CPU_SUPPORTS_32BIT_KERNEL
1704 select CPU_SUPPORTS_64BIT_KERNEL
1705 select CPU_SUPPORTS_HIGHMEM
1706 select CPU_SUPPORTS_HUGEPAGES
1707 select WEAK_ORDERING
1709 config CPU_CAVIUM_OCTEON
1710 bool "Cavium Octeon processor"
1711 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1712 select CPU_HAS_PREFETCH
1713 select CPU_HAS_LOAD_STORE_LR
1714 select CPU_SUPPORTS_64BIT_KERNEL
1715 select WEAK_ORDERING
1716 select CPU_SUPPORTS_HIGHMEM
1717 select CPU_SUPPORTS_HUGEPAGES
1718 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1719 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1720 select MIPS_L1_CACHE_SHIFT_7
1723 The Cavium Octeon processor is a highly integrated chip containing
1724 many ethernet hardware widgets for networking tasks. The processor
1725 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1726 Full details can be found at http://www.caviumnetworks.com.
1729 bool "Broadcom BMIPS"
1730 depends on SYS_HAS_CPU_BMIPS
1732 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1733 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1734 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1735 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1736 select CPU_SUPPORTS_32BIT_KERNEL
1737 select DMA_NONCOHERENT
1739 select SWAP_IO_SPACE
1740 select WEAK_ORDERING
1741 select CPU_SUPPORTS_HIGHMEM
1742 select CPU_HAS_PREFETCH
1743 select CPU_HAS_LOAD_STORE_LR
1744 select CPU_SUPPORTS_CPUFREQ
1745 select MIPS_EXTERNAL_TIMER
1747 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1750 bool "Netlogic XLR SoC"
1751 depends on SYS_HAS_CPU_XLR
1752 select CPU_HAS_LOAD_STORE_LR
1753 select CPU_SUPPORTS_32BIT_KERNEL
1754 select CPU_SUPPORTS_64BIT_KERNEL
1755 select CPU_SUPPORTS_HIGHMEM
1756 select CPU_SUPPORTS_HUGEPAGES
1757 select WEAK_ORDERING
1758 select WEAK_REORDERING_BEYOND_LLSC
1760 Netlogic Microsystems XLR/XLS processors.
1763 bool "Netlogic XLP SoC"
1764 depends on SYS_HAS_CPU_XLP
1765 select CPU_SUPPORTS_32BIT_KERNEL
1766 select CPU_SUPPORTS_64BIT_KERNEL
1767 select CPU_SUPPORTS_HIGHMEM
1768 select WEAK_ORDERING
1769 select WEAK_REORDERING_BEYOND_LLSC
1770 select CPU_HAS_PREFETCH
1771 select CPU_HAS_LOAD_STORE_LR
1773 select CPU_SUPPORTS_HUGEPAGES
1774 select MIPS_ASID_BITS_VARIABLE
1776 Netlogic Microsystems XLP processors.
1779 config CPU_MIPS32_3_5_FEATURES
1780 bool "MIPS32 Release 3.5 Features"
1781 depends on SYS_HAS_CPU_MIPS32_R3_5
1782 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1784 Choose this option to build a kernel for release 2 or later of the
1785 MIPS32 architecture including features from the 3.5 release such as
1786 support for Enhanced Virtual Addressing (EVA).
1788 config CPU_MIPS32_3_5_EVA
1789 bool "Enhanced Virtual Addressing (EVA)"
1790 depends on CPU_MIPS32_3_5_FEATURES
1794 Choose this option if you want to enable the Enhanced Virtual
1795 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1796 One of its primary benefits is an increase in the maximum size
1797 of lowmem (up to 3GB). If unsure, say 'N' here.
1799 config CPU_MIPS32_R5_FEATURES
1800 bool "MIPS32 Release 5 Features"
1801 depends on SYS_HAS_CPU_MIPS32_R5
1802 depends on CPU_MIPS32_R2
1804 Choose this option to build a kernel for release 2 or later of the
1805 MIPS32 architecture including features from release 5 such as
1806 support for Extended Physical Addressing (XPA).
1808 config CPU_MIPS32_R5_XPA
1809 bool "Extended Physical Addressing (XPA)"
1810 depends on CPU_MIPS32_R5_FEATURES
1812 depends on !PAGE_SIZE_4KB
1813 depends on SYS_SUPPORTS_HIGHMEM
1816 select PHYS_ADDR_T_64BIT
1819 Choose this option if you want to enable the Extended Physical
1820 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1821 benefit is to increase physical addressing equal to or greater
1822 than 40 bits. Note that this has the side effect of turning on
1823 64-bit addressing which in turn makes the PTEs 64-bit in size.
1824 If unsure, say 'N' here.
1827 config CPU_NOP_WORKAROUNDS
1830 config CPU_JUMP_WORKAROUNDS
1833 config CPU_LOONGSON2F_WORKAROUNDS
1834 bool "Loongson 2F Workarounds"
1836 select CPU_NOP_WORKAROUNDS
1837 select CPU_JUMP_WORKAROUNDS
1839 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1840 require workarounds. Without workarounds the system may hang
1841 unexpectedly. For more information please refer to the gas
1842 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1844 Loongson 2F03 and later have fixed these issues and no workarounds
1845 are needed. The workarounds have no significant side effect on them
1846 but may decrease the performance of the system so this option should
1847 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1850 If unsure, please say Y.
1851 endif # CPU_LOONGSON2F
1853 config SYS_SUPPORTS_ZBOOT
1855 select HAVE_KERNEL_GZIP
1856 select HAVE_KERNEL_BZIP2
1857 select HAVE_KERNEL_LZ4
1858 select HAVE_KERNEL_LZMA
1859 select HAVE_KERNEL_LZO
1860 select HAVE_KERNEL_XZ
1862 config SYS_SUPPORTS_ZBOOT_UART16550
1864 select SYS_SUPPORTS_ZBOOT
1866 config SYS_SUPPORTS_ZBOOT_UART_PROM
1868 select SYS_SUPPORTS_ZBOOT
1870 config CPU_LOONGSON2
1872 select CPU_SUPPORTS_32BIT_KERNEL
1873 select CPU_SUPPORTS_64BIT_KERNEL
1874 select CPU_SUPPORTS_HIGHMEM
1875 select CPU_SUPPORTS_HUGEPAGES
1876 select ARCH_HAS_PHYS_TO_DMA
1877 select CPU_HAS_LOAD_STORE_LR
1879 config CPU_LOONGSON1
1883 select CPU_HAS_PREFETCH
1884 select CPU_HAS_LOAD_STORE_LR
1885 select CPU_SUPPORTS_32BIT_KERNEL
1886 select CPU_SUPPORTS_HIGHMEM
1887 select CPU_SUPPORTS_CPUFREQ
1889 config CPU_BMIPS32_3300
1890 select SMP_UP if SMP
1893 config CPU_BMIPS4350
1895 select SYS_SUPPORTS_SMP
1896 select SYS_SUPPORTS_HOTPLUG_CPU
1898 config CPU_BMIPS4380
1900 select MIPS_L1_CACHE_SHIFT_6
1901 select SYS_SUPPORTS_SMP
1902 select SYS_SUPPORTS_HOTPLUG_CPU
1905 config CPU_BMIPS5000
1907 select MIPS_CPU_SCACHE
1908 select MIPS_L1_CACHE_SHIFT_7
1909 select SYS_SUPPORTS_SMP
1910 select SYS_SUPPORTS_HOTPLUG_CPU
1913 config SYS_HAS_CPU_LOONGSON3
1915 select CPU_SUPPORTS_CPUFREQ
1918 config SYS_HAS_CPU_LOONGSON2E
1921 config SYS_HAS_CPU_LOONGSON2F
1923 select CPU_SUPPORTS_CPUFREQ
1924 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1925 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1927 config SYS_HAS_CPU_LOONGSON1B
1930 config SYS_HAS_CPU_LOONGSON1C
1933 config SYS_HAS_CPU_MIPS32_R1
1936 config SYS_HAS_CPU_MIPS32_R2
1939 config SYS_HAS_CPU_MIPS32_R3_5
1942 config SYS_HAS_CPU_MIPS32_R5
1944 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1946 config SYS_HAS_CPU_MIPS32_R6
1948 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1950 config SYS_HAS_CPU_MIPS64_R1
1953 config SYS_HAS_CPU_MIPS64_R2
1956 config SYS_HAS_CPU_MIPS64_R6
1958 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1960 config SYS_HAS_CPU_R3000
1963 config SYS_HAS_CPU_TX39XX
1966 config SYS_HAS_CPU_VR41XX
1969 config SYS_HAS_CPU_R4300
1972 config SYS_HAS_CPU_R4X00
1975 config SYS_HAS_CPU_TX49XX
1978 config SYS_HAS_CPU_R5000
1981 config SYS_HAS_CPU_R5432
1984 config SYS_HAS_CPU_R5500
1987 config SYS_HAS_CPU_NEVADA
1990 config SYS_HAS_CPU_R8000
1993 config SYS_HAS_CPU_R10000
1995 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1997 config SYS_HAS_CPU_RM7000
2000 config SYS_HAS_CPU_SB1
2003 config SYS_HAS_CPU_CAVIUM_OCTEON
2006 config SYS_HAS_CPU_BMIPS
2009 config SYS_HAS_CPU_BMIPS32_3300
2011 select SYS_HAS_CPU_BMIPS
2013 config SYS_HAS_CPU_BMIPS4350
2015 select SYS_HAS_CPU_BMIPS
2017 config SYS_HAS_CPU_BMIPS4380
2019 select SYS_HAS_CPU_BMIPS
2021 config SYS_HAS_CPU_BMIPS5000
2023 select SYS_HAS_CPU_BMIPS
2024 select ARCH_HAS_SYNC_DMA_FOR_CPU
2026 config SYS_HAS_CPU_XLR
2029 config SYS_HAS_CPU_XLP
2033 # CPU may reorder R->R, R->W, W->R, W->W
2034 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2036 config WEAK_ORDERING
2040 # CPU may reorder reads and writes beyond LL/SC
2041 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2043 config WEAK_REORDERING_BEYOND_LLSC
2048 # These two indicate any level of the MIPS32 and MIPS64 architecture
2052 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2056 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2059 # These indicate the revision of the architecture
2063 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2067 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2073 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2075 select HAVE_ARCH_BITREVERSE
2076 select MIPS_ASID_BITS_VARIABLE
2077 select MIPS_CRC_SUPPORT
2080 config TARGET_ISA_REV
2082 default 1 if CPU_MIPSR1
2083 default 2 if CPU_MIPSR2
2084 default 6 if CPU_MIPSR6
2087 Reflects the ISA revision being targeted by the kernel build. This
2088 is effectively the Kconfig equivalent of MIPS_ISA_REV.
2096 config SYS_SUPPORTS_32BIT_KERNEL
2098 config SYS_SUPPORTS_64BIT_KERNEL
2100 config CPU_SUPPORTS_32BIT_KERNEL
2102 config CPU_SUPPORTS_64BIT_KERNEL
2104 config CPU_SUPPORTS_CPUFREQ
2106 config CPU_SUPPORTS_ADDRWINCFG
2108 config CPU_SUPPORTS_HUGEPAGES
2110 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2112 config MIPS_PGD_C0_CONTEXT
2114 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2117 # Set to y for ptrace access to watch registers.
2119 config HARDWARE_WATCHPOINTS
2121 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2126 prompt "Kernel code model"
2128 You should only select this option if you have a workload that
2129 actually benefits from 64-bit processing or if your machine has
2130 large memory. You will only be presented a single option in this
2131 menu if your system does not support both 32-bit and 64-bit kernels.
2134 bool "32-bit kernel"
2135 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2138 Select this option if you want to build a 32-bit kernel.
2141 bool "64-bit kernel"
2142 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2144 Select this option if you want to build a 64-bit kernel.
2149 bool "KVM Guest Kernel"
2150 depends on BROKEN_ON_SMP
2152 Select this option if building a guest kernel for KVM (Trap & Emulate)
2155 config KVM_GUEST_TIMER_FREQ
2156 int "Count/Compare Timer Frequency (MHz)"
2157 depends on KVM_GUEST
2160 Set this to non-zero if building a guest kernel for KVM to skip RTC
2161 emulation when determining guest CPU Frequency. Instead, the guest's
2162 timer frequency is specified directly.
2164 config MIPS_VA_BITS_48
2165 bool "48 bits virtual memory"
2168 Support a maximum at least 48 bits of application virtual
2169 memory. Default is 40 bits or less, depending on the CPU.
2170 For page sizes 16k and above, this option results in a small
2171 memory overhead for page tables. For 4k page size, a fourth
2172 level of page tables is added which imposes both a memory
2173 overhead as well as slower TLB fault handling.
2178 prompt "Kernel page size"
2179 default PAGE_SIZE_4KB
2181 config PAGE_SIZE_4KB
2183 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2185 This option select the standard 4kB Linux page size. On some
2186 R3000-family processors this is the only available page size. Using
2187 4kB page size will minimize memory consumption and is therefore
2188 recommended for low memory systems.
2190 config PAGE_SIZE_8KB
2192 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2193 depends on !MIPS_VA_BITS_48
2195 Using 8kB page size will result in higher performance kernel at
2196 the price of higher memory consumption. This option is available
2197 only on R8000 and cnMIPS processors. Note that you will need a
2198 suitable Linux distribution to support this.
2200 config PAGE_SIZE_16KB
2202 depends on !CPU_R3000 && !CPU_TX39XX
2204 Using 16kB page size will result in higher performance kernel at
2205 the price of higher memory consumption. This option is available on
2206 all non-R3000 family processors. Note that you will need a suitable
2207 Linux distribution to support this.
2209 config PAGE_SIZE_32KB
2211 depends on CPU_CAVIUM_OCTEON
2212 depends on !MIPS_VA_BITS_48
2214 Using 32kB page size will result in higher performance kernel at
2215 the price of higher memory consumption. This option is available
2216 only on cnMIPS cores. Note that you will need a suitable Linux
2217 distribution to support this.
2219 config PAGE_SIZE_64KB
2221 depends on !CPU_R3000 && !CPU_TX39XX
2223 Using 64kB page size will result in higher performance kernel at
2224 the price of higher memory consumption. This option is available on
2225 all non-R3000 family processor. Not that at the time of this
2226 writing this option is still high experimental.
2230 config FORCE_MAX_ZONEORDER
2231 int "Maximum zone order"
2232 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2233 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2234 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2235 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2236 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2237 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2241 The kernel memory allocator divides physically contiguous memory
2242 blocks into "zones", where each zone is a power of two number of
2243 pages. This option selects the largest power of two that the kernel
2244 keeps in the memory allocator. If you need to allocate very large
2245 blocks of physically contiguous memory, then you may need to
2246 increase this value.
2248 This config option is actually maximum order plus one. For example,
2249 a value of 11 means that the largest free memory block is 2^10 pages.
2251 The page size is not necessarily 4KB. Keep this in mind
2252 when choosing a value for this option.
2257 config IP22_CPU_SCACHE
2262 # Support for a MIPS32 / MIPS64 style S-caches
2264 config MIPS_CPU_SCACHE
2268 config R5000_CPU_SCACHE
2272 config RM7000_CPU_SCACHE
2276 config SIBYTE_DMA_PAGEOPS
2277 bool "Use DMA to clear/copy pages"
2280 Instead of using the CPU to zero and copy pages, use a Data Mover
2281 channel. These DMA channels are otherwise unused by the standard
2282 SiByte Linux port. Seems to give a small performance benefit.
2284 config CPU_HAS_PREFETCH
2287 config CPU_GENERIC_DUMP_TLB
2289 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
2291 config MIPS_FP_SUPPORT
2292 bool "Floating Point support" if EXPERT
2295 Select y to include support for floating point in the kernel
2296 including initialization of FPU hardware, FP context save & restore
2297 and emulation of an FPU where necessary. Without this support any
2298 userland program attempting to use floating point instructions will
2301 If you know that your userland will not attempt to use floating point
2302 instructions then you can say n here to shrink the kernel a little.
2306 config CPU_R2300_FPU
2308 depends on MIPS_FP_SUPPORT
2309 default y if CPU_R3000 || CPU_TX39XX
2313 depends on MIPS_FP_SUPPORT
2314 default y if !CPU_R2300_FPU
2316 config CPU_R4K_CACHE_TLB
2318 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2321 bool "MIPS MT SMP support (1 TC on each available VPE)"
2323 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2324 select CPU_MIPSR2_IRQ_VI
2325 select CPU_MIPSR2_IRQ_EI
2330 select SYS_SUPPORTS_SMP
2331 select SYS_SUPPORTS_SCHED_SMT
2332 select MIPS_PERF_SHARED_TC_COUNTERS
2334 This is a kernel model which is known as SMVP. This is supported
2335 on cores with the MT ASE and uses the available VPEs to implement
2336 virtual processors which supports SMP. This is equivalent to the
2337 Intel Hyperthreading feature. For further information go to
2338 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2344 bool "SMT (multithreading) scheduler support"
2345 depends on SYS_SUPPORTS_SCHED_SMT
2348 SMT scheduler support improves the CPU scheduler's decision making
2349 when dealing with MIPS MT enabled cores at a cost of slightly
2350 increased overhead in some places. If unsure say N here.
2352 config SYS_SUPPORTS_SCHED_SMT
2355 config SYS_SUPPORTS_MULTITHREADING
2358 config MIPS_MT_FPAFF
2359 bool "Dynamic FPU affinity for FP-intensive threads"
2361 depends on MIPS_MT_SMP
2363 config MIPSR2_TO_R6_EMULATOR
2364 bool "MIPS R2-to-R6 emulator"
2365 depends on CPU_MIPSR6
2366 depends on MIPS_FP_SUPPORT
2369 Choose this option if you want to run non-R6 MIPS userland code.
2370 Even if you say 'Y' here, the emulator will still be disabled by
2371 default. You can enable it using the 'mipsr2emu' kernel option.
2372 The only reason this is a build-time option is to save ~14K from the
2375 config SYS_SUPPORTS_VPE_LOADER
2377 depends on SYS_SUPPORTS_MULTITHREADING
2379 Indicates that the platform supports the VPE loader, and provides
2382 config MIPS_VPE_LOADER
2383 bool "VPE loader support."
2384 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2385 select CPU_MIPSR2_IRQ_VI
2386 select CPU_MIPSR2_IRQ_EI
2389 Includes a loader for loading an elf relocatable object
2390 onto another VPE and running it.
2392 config MIPS_VPE_LOADER_CMP
2395 depends on MIPS_VPE_LOADER && MIPS_CMP
2397 config MIPS_VPE_LOADER_MT
2400 depends on MIPS_VPE_LOADER && !MIPS_CMP
2402 config MIPS_VPE_LOADER_TOM
2403 bool "Load VPE program into memory hidden from linux"
2404 depends on MIPS_VPE_LOADER
2407 The loader can use memory that is present but has been hidden from
2408 Linux using the kernel command line option "mem=xxMB". It's up to
2409 you to ensure the amount you put in the option and the space your
2410 program requires is less or equal to the amount physically present.
2412 config MIPS_VPE_APSP_API
2413 bool "Enable support for AP/SP API (RTLX)"
2414 depends on MIPS_VPE_LOADER
2416 config MIPS_VPE_APSP_API_CMP
2419 depends on MIPS_VPE_APSP_API && MIPS_CMP
2421 config MIPS_VPE_APSP_API_MT
2424 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2427 bool "MIPS CMP framework support (DEPRECATED)"
2428 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2431 select SYS_SUPPORTS_SMP
2432 select WEAK_ORDERING
2435 Select this if you are using a bootloader which implements the "CMP
2436 framework" protocol (ie. YAMON) and want your kernel to make use of
2437 its ability to start secondary CPUs.
2439 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2443 bool "MIPS Coherent Processing System support"
2444 depends on SYS_SUPPORTS_MIPS_CPS
2446 select MIPS_CPS_PM if HOTPLUG_CPU
2448 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2449 select SYS_SUPPORTS_HOTPLUG_CPU
2450 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2451 select SYS_SUPPORTS_SMP
2452 select WEAK_ORDERING
2454 Select this if you wish to run an SMP kernel across multiple cores
2455 within a MIPS Coherent Processing System. When this option is
2456 enabled the kernel will probe for other cores and boot them with
2457 no external assistance. It is safe to enable this when hardware
2458 support is unavailable.
2471 config SB1_PASS_2_WORKAROUNDS
2473 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2476 config SB1_PASS_2_1_WORKAROUNDS
2478 depends on CPU_SB1 && CPU_SB1_PASS_2
2482 prompt "SmartMIPS or microMIPS ASE support"
2484 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2487 Select this if you want neither microMIPS nor SmartMIPS support
2489 config CPU_HAS_SMARTMIPS
2490 depends on SYS_SUPPORTS_SMARTMIPS
2493 SmartMIPS is a extension of the MIPS32 architecture aimed at
2494 increased security at both hardware and software level for
2495 smartcards. Enabling this option will allow proper use of the
2496 SmartMIPS instructions by Linux applications. However a kernel with
2497 this option will not work on a MIPS core without SmartMIPS core. If
2498 you don't know you probably don't have SmartMIPS and should say N
2501 config CPU_MICROMIPS
2502 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2505 When this option is enabled the kernel will be built using the
2511 bool "Support for the MIPS SIMD Architecture"
2512 depends on CPU_SUPPORTS_MSA
2513 depends on MIPS_FP_SUPPORT
2514 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2516 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2517 and a set of SIMD instructions to operate on them. When this option
2518 is enabled the kernel will support allocating & switching MSA
2519 vector register contexts. If you know that your kernel will only be
2520 running on CPUs which do not support MSA or that your userland will
2521 not be making use of it then you may wish to say N here to reduce
2522 the size & complexity of your kernel.
2535 config CPU_HAS_LOAD_STORE_LR
2538 CPU has support for unaligned load and store instructions:
2539 LWL, LWR, SWL, SWR (Load/store word left/right).
2540 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit systems).
2543 # Vectored interrupt mode is an R2 feature
2545 config CPU_MIPSR2_IRQ_VI
2549 # Extended interrupt mode is an R2 feature
2551 config CPU_MIPSR2_IRQ_EI
2556 depends on !CPU_R3000
2562 config CPU_DADDI_WORKAROUNDS
2565 config CPU_R4000_WORKAROUNDS
2567 select CPU_R4400_WORKAROUNDS
2569 config CPU_R4400_WORKAROUNDS
2572 config MIPS_ASID_SHIFT
2574 default 6 if CPU_R3000 || CPU_TX39XX
2575 default 4 if CPU_R8000
2578 config MIPS_ASID_BITS
2580 default 0 if MIPS_ASID_BITS_VARIABLE
2581 default 6 if CPU_R3000 || CPU_TX39XX
2584 config MIPS_ASID_BITS_VARIABLE
2587 config MIPS_CRC_SUPPORT
2591 # - Highmem only makes sense for the 32-bit kernel.
2592 # - The current highmem code will only work properly on physically indexed
2593 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2594 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2595 # moment we protect the user and offer the highmem option only on machines
2596 # where it's known to be safe. This will not offer highmem on a few systems
2597 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2598 # indexed CPUs but we're playing safe.
2599 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2600 # know they might have memory configurations that could make use of highmem
2604 bool "High Memory Support"
2605 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2607 config CPU_SUPPORTS_HIGHMEM
2610 config SYS_SUPPORTS_HIGHMEM
2613 config SYS_SUPPORTS_SMARTMIPS
2616 config SYS_SUPPORTS_MICROMIPS
2619 config SYS_SUPPORTS_MIPS16
2622 This option must be set if a kernel might be executed on a MIPS16-
2623 enabled CPU even if MIPS16 is not actually being used. In other
2624 words, it makes the kernel MIPS16-tolerant.
2626 config CPU_SUPPORTS_MSA
2629 config ARCH_FLATMEM_ENABLE
2631 depends on !NUMA && !CPU_LOONGSON2
2633 config ARCH_DISCONTIGMEM_ENABLE
2635 default y if SGI_IP27
2637 Say Y to support efficient handling of discontiguous physical memory,
2638 for architectures which are either NUMA (Non-Uniform Memory Access)
2639 or have huge holes in the physical address space for other reasons.
2640 See <file:Documentation/vm/numa.rst> for more.
2642 config ARCH_SPARSEMEM_ENABLE
2644 select SPARSEMEM_STATIC
2648 depends on SYS_SUPPORTS_NUMA
2650 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2651 Access). This option improves performance on systems with more
2652 than two nodes; on two node systems it is generally better to
2653 leave it disabled; on single node systems disable this option
2656 config SYS_SUPPORTS_NUMA
2660 bool "Relocatable kernel"
2661 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2663 This builds a kernel image that retains relocation information
2664 so it can be loaded someplace besides the default 1MB.
2665 The relocations make the kernel binary about 15% larger,
2666 but are discarded at runtime
2668 config RELOCATION_TABLE_SIZE
2669 hex "Relocation table size"
2670 depends on RELOCATABLE
2671 range 0x0 0x01000000
2672 default "0x00100000"
2674 A table of relocation data will be appended to the kernel binary
2675 and parsed at boot to fix up the relocated kernel.
2677 This option allows the amount of space reserved for the table to be
2678 adjusted, although the default of 1Mb should be ok in most cases.
2680 The build will fail and a valid size suggested if this is too small.
2682 If unsure, leave at the default value.
2684 config RANDOMIZE_BASE
2685 bool "Randomize the address of the kernel image"
2686 depends on RELOCATABLE
2688 Randomizes the physical and virtual address at which the
2689 kernel image is loaded, as a security feature that
2690 deters exploit attempts relying on knowledge of the location
2691 of kernel internals.
2693 Entropy is generated using any coprocessor 0 registers available.
2695 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2699 config RANDOMIZE_BASE_MAX_OFFSET
2700 hex "Maximum kASLR offset" if EXPERT
2701 depends on RANDOMIZE_BASE
2702 range 0x0 0x40000000 if EVA || 64BIT
2703 range 0x0 0x08000000
2704 default "0x01000000"
2706 When kASLR is active, this provides the maximum offset that will
2707 be applied to the kernel image. It should be set according to the
2708 amount of physical RAM available in the target system minus
2709 PHYSICAL_START and must be a power of 2.
2711 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2712 EVA or 64-bit. The default is 16Mb.
2717 depends on NEED_MULTIPLE_NODES
2719 config HW_PERF_EVENTS
2720 bool "Enable hardware performance counter support for perf events"
2721 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2724 Enable hardware performance counter support for perf events. If
2725 disabled, perf events will use software events only.
2728 bool "Multi-Processing support"
2729 depends on SYS_SUPPORTS_SMP
2731 This enables support for systems with more than one CPU. If you have
2732 a system with only one CPU, say N. If you have a system with more
2733 than one CPU, say Y.
2735 If you say N here, the kernel will run on uni- and multiprocessor
2736 machines, but will use only one CPU of a multiprocessor machine. If
2737 you say Y here, the kernel will run on many, but not all,
2738 uniprocessor machines. On a uniprocessor machine, the kernel
2739 will run faster if you say N here.
2741 People using multiprocessor machines who say Y here should also say
2742 Y to "Enhanced Real Time Clock Support", below.
2744 See also the SMP-HOWTO available at
2745 <http://www.tldp.org/docs.html#howto>.
2747 If you don't know what to do here, say N.
2750 bool "Support for hot-pluggable CPUs"
2751 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2753 Say Y here to allow turning CPUs off and on. CPUs can be
2754 controlled through /sys/devices/system/cpu.
2755 (Note: power management support will enable this option
2756 automatically on SMP systems. )
2757 Say N if you want to disable CPU hotplug.
2762 config SYS_SUPPORTS_MIPS_CMP
2765 config SYS_SUPPORTS_MIPS_CPS
2768 config SYS_SUPPORTS_SMP
2771 config NR_CPUS_DEFAULT_4
2774 config NR_CPUS_DEFAULT_8
2777 config NR_CPUS_DEFAULT_16
2780 config NR_CPUS_DEFAULT_32
2783 config NR_CPUS_DEFAULT_64
2787 int "Maximum number of CPUs (2-256)"
2790 default "4" if NR_CPUS_DEFAULT_4
2791 default "8" if NR_CPUS_DEFAULT_8
2792 default "16" if NR_CPUS_DEFAULT_16
2793 default "32" if NR_CPUS_DEFAULT_32
2794 default "64" if NR_CPUS_DEFAULT_64
2796 This allows you to specify the maximum number of CPUs which this
2797 kernel will support. The maximum supported value is 32 for 32-bit
2798 kernel and 64 for 64-bit kernels; the minimum value which makes
2799 sense is 1 for Qemu (useful only for kernel debugging purposes)
2800 and 2 for all others.
2802 This is purely to save memory - each supported CPU adds
2803 approximately eight kilobytes to the kernel image. For best
2804 performance should round up your number of processors to the next
2807 config MIPS_PERF_SHARED_TC_COUNTERS
2810 config MIPS_NR_CPU_NR_MAP_1024
2813 config MIPS_NR_CPU_NR_MAP
2816 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2817 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2820 # Timer Interrupt Frequency Configuration
2824 prompt "Timer frequency"
2827 Allows the configuration of the timer frequency.
2830 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2833 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2836 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2839 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2842 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2845 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2848 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2851 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2855 config SYS_SUPPORTS_24HZ
2858 config SYS_SUPPORTS_48HZ
2861 config SYS_SUPPORTS_100HZ
2864 config SYS_SUPPORTS_128HZ
2867 config SYS_SUPPORTS_250HZ
2870 config SYS_SUPPORTS_256HZ
2873 config SYS_SUPPORTS_1000HZ
2876 config SYS_SUPPORTS_1024HZ
2879 config SYS_SUPPORTS_ARBIT_HZ
2881 default y if !SYS_SUPPORTS_24HZ && \
2882 !SYS_SUPPORTS_48HZ && \
2883 !SYS_SUPPORTS_100HZ && \
2884 !SYS_SUPPORTS_128HZ && \
2885 !SYS_SUPPORTS_250HZ && \
2886 !SYS_SUPPORTS_256HZ && \
2887 !SYS_SUPPORTS_1000HZ && \
2888 !SYS_SUPPORTS_1024HZ
2894 default 100 if HZ_100
2895 default 128 if HZ_128
2896 default 250 if HZ_250
2897 default 256 if HZ_256
2898 default 1000 if HZ_1000
2899 default 1024 if HZ_1024
2902 def_bool HIGH_RES_TIMERS
2905 bool "Kexec system call"
2908 kexec is a system call that implements the ability to shutdown your
2909 current kernel, and to start another kernel. It is like a reboot
2910 but it is independent of the system firmware. And like a reboot
2911 you can start any kernel with it, not just Linux.
2913 The name comes from the similarity to the exec system call.
2915 It is an ongoing process to be certain the hardware in a machine
2916 is properly shutdown, so do not be surprised if this code does not
2917 initially work for you. As of this writing the exact hardware
2918 interface is strongly in flux, so no good recommendation can be
2922 bool "Kernel crash dumps"
2924 Generate crash dump after being started by kexec.
2925 This should be normally only set in special crash dump kernels
2926 which are loaded in the main kernel with kexec-tools into
2927 a specially reserved region and then later executed after
2928 a crash by kdump/kexec. The crash dump kernel must be compiled
2929 to a memory address not used by the main kernel or firmware using
2932 config PHYSICAL_START
2933 hex "Physical address where the kernel is loaded"
2934 default "0xffffffff84000000"
2935 depends on CRASH_DUMP
2937 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2938 If you plan to use kernel for capturing the crash dump change
2939 this value to start of the reserved region (the "X" value as
2940 specified in the "crashkernel=YM@XM" command line boot parameter
2941 passed to the panic-ed kernel).
2944 bool "Enable seccomp to safely compute untrusted bytecode"
2948 This kernel feature is useful for number crunching applications
2949 that may need to compute untrusted bytecode during their
2950 execution. By using pipes or other transports made available to
2951 the process as file descriptors supporting the read/write
2952 syscalls, it's possible to isolate those applications in
2953 their own address space using seccomp. Once seccomp is
2954 enabled via /proc/<pid>/seccomp, it cannot be disabled
2955 and the task is only allowed to execute a few safe syscalls
2956 defined by each seccomp mode.
2958 If unsure, say Y. Only embedded should say N here.
2960 config MIPS_O32_FP64_SUPPORT
2961 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
2962 depends on 32BIT || MIPS32_O32
2964 When this is enabled, the kernel will support use of 64-bit floating
2965 point registers with binaries using the O32 ABI along with the
2966 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2967 32-bit MIPS systems this support is at the cost of increasing the
2968 size and complexity of the compiled FPU emulator. Thus if you are
2969 running a MIPS32 system and know that none of your userland binaries
2970 will require 64-bit floating point, you may wish to reduce the size
2971 of your kernel & potentially improve FP emulation performance by
2974 Although binutils currently supports use of this flag the details
2975 concerning its effect upon the O32 ABI in userland are still being
2976 worked on. In order to avoid userland becoming dependant upon current
2977 behaviour before the details have been finalised, this option should
2978 be considered experimental and only enabled by those working upon
2986 select OF_EARLY_FLATTREE
2996 prompt "Kernel appended dtb support" if USE_OF
2997 default MIPS_NO_APPENDED_DTB
2999 config MIPS_NO_APPENDED_DTB
3002 Do not enable appended dtb support.
3004 config MIPS_ELF_APPENDED_DTB
3007 With this option, the boot code will look for a device tree binary
3008 DTB) included in the vmlinux ELF section .appended_dtb. By default
3009 it is empty and the DTB can be appended using binutils command
3012 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
3014 This is meant as a backward compatiblity convenience for those
3015 systems with a bootloader that can't be upgraded to accommodate
3016 the documented boot protocol using a device tree.
3018 config MIPS_RAW_APPENDED_DTB
3019 bool "vmlinux.bin or vmlinuz.bin"
3021 With this option, the boot code will look for a device tree binary
3022 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
3023 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
3025 This is meant as a backward compatibility convenience for those
3026 systems with a bootloader that can't be upgraded to accommodate
3027 the documented boot protocol using a device tree.
3029 Beware that there is very little in terms of protection against
3030 this option being confused by leftover garbage in memory that might
3031 look like a DTB header after a reboot if no actual DTB is appended
3032 to vmlinux.bin. Do not leave this option active in a production kernel
3033 if you don't intend to always append a DTB.
3037 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
3038 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
3041 default MIPS_CMDLINE_FROM_BOOTLOADER
3043 config MIPS_CMDLINE_FROM_DTB
3045 bool "Dtb kernel arguments if available"
3047 config MIPS_CMDLINE_DTB_EXTEND
3049 bool "Extend dtb kernel arguments with bootloader arguments"
3051 config MIPS_CMDLINE_FROM_BOOTLOADER
3052 bool "Bootloader kernel arguments if available"
3054 config MIPS_CMDLINE_BUILTIN_EXTEND
3055 depends on CMDLINE_BOOL
3056 bool "Extend builtin kernel arguments with bootloader arguments"
3061 config LOCKDEP_SUPPORT
3065 config STACKTRACE_SUPPORT
3069 config HAVE_LATENCYTOP_SUPPORT
3073 config PGTABLE_LEVELS
3075 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3076 default 3 if 64BIT && !PAGE_SIZE_64KB
3079 config MIPS_AUTO_PFN_OFFSET
3082 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3084 config PCI_DRIVERS_GENERIC
3085 select PCI_DOMAINS_GENERIC if PCI
3088 config PCI_DRIVERS_LEGACY
3089 def_bool !PCI_DRIVERS_GENERIC
3090 select NO_GENERIC_PCI_IOPORT_MAP
3091 select PCI_DOMAINS if PCI
3094 # ISA support is now enabled via select. Too many systems still have the one
3095 # or other ISA chip on the board that users don't know about so don't expect
3096 # users to choose the right thing ...
3102 bool "TURBOchannel support"
3103 depends on MACH_DECSTATION
3105 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3106 processors. TURBOchannel programming specifications are available
3108 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3110 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3111 Linux driver support status is documented at:
3112 <http://www.linux-mips.org/wiki/DECstation>
3118 config ARCH_MMAP_RND_BITS_MIN
3122 config ARCH_MMAP_RND_BITS_MAX
3126 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3129 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3136 select MIPS_EXTERNAL_TIMER
3149 config MIPS32_COMPAT
3155 config SYSVIPC_COMPAT
3159 bool "Kernel support for o32 binaries"
3161 select ARCH_WANT_OLD_COMPAT_IPC
3163 select MIPS32_COMPAT
3164 select SYSVIPC_COMPAT if SYSVIPC
3166 Select this option if you want to run o32 binaries. These are pure
3167 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3168 existing binaries are in this format.
3173 bool "Kernel support for n32 binaries"
3175 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3177 select MIPS32_COMPAT
3178 select SYSVIPC_COMPAT if SYSVIPC
3180 Select this option if you want to run n32 binaries. These are
3181 64-bit binaries using 32-bit quantities for addressing and certain
3182 data that would normally be 64-bit. They are used in special
3189 default y if MIPS32_O32 || MIPS32_N32
3192 menu "Power management options"
3194 config ARCH_HIBERNATION_POSSIBLE
3196 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3198 config ARCH_SUSPEND_POSSIBLE
3200 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3202 source "kernel/power/Kconfig"
3206 config MIPS_EXTERNAL_TIMER
3209 menu "CPU Power Management"
3211 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3212 source "drivers/cpufreq/Kconfig"
3215 source "drivers/cpuidle/Kconfig"
3219 source "drivers/firmware/Kconfig"
3221 source "arch/mips/kvm/Kconfig"