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_DISCARD_MEMBLOCK
9 select ARCH_HAS_ELF_RANDOMIZE
10 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
11 select ARCH_HAS_UBSAN_SANITIZE_ALL
12 select ARCH_SUPPORTS_UPROBES
13 select ARCH_USE_BUILTIN_BSWAP
14 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
15 select ARCH_USE_QUEUED_RWLOCKS
16 select ARCH_USE_QUEUED_SPINLOCKS
17 select ARCH_WANT_IPC_PARSE_VERSION
18 select BUILDTIME_EXTABLE_SORT
19 select CLONE_BACKWARDS
20 select CPU_NO_EFFICIENT_FFS if (TARGET_ISA_REV < 1)
21 select CPU_PM if CPU_IDLE
22 select GENERIC_ATOMIC64 if !64BIT
23 select GENERIC_CLOCKEVENTS
24 select GENERIC_CMOS_UPDATE
25 select GENERIC_CPU_AUTOPROBE
27 select GENERIC_IRQ_PROBE
28 select GENERIC_IRQ_SHOW
29 select GENERIC_ISA_DMA if EISA
30 select GENERIC_LIB_ASHLDI3
31 select GENERIC_LIB_ASHRDI3
32 select GENERIC_LIB_CMPDI2
33 select GENERIC_LIB_LSHRDI3
34 select GENERIC_LIB_UCMPDI2
35 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
36 select GENERIC_SMP_IDLE_THREAD
37 select GENERIC_TIME_VSYSCALL
38 select HANDLE_DOMAIN_IRQ
39 select HAVE_ARCH_COMPILER_H
40 select HAVE_ARCH_JUMP_LABEL
42 select HAVE_ARCH_MMAP_RND_BITS if MMU
43 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
44 select HAVE_ARCH_SECCOMP_FILTER
45 select HAVE_ARCH_TRACEHOOK
46 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
47 select HAVE_CBPF_JIT if (!64BIT && !CPU_MICROMIPS)
48 select HAVE_EBPF_JIT if (64BIT && !CPU_MICROMIPS)
49 select HAVE_CONTEXT_TRACKING
50 select HAVE_COPY_THREAD_TLS
51 select HAVE_C_RECORDMCOUNT
52 select HAVE_DEBUG_KMEMLEAK
53 select HAVE_DEBUG_STACKOVERFLOW
54 select HAVE_DMA_CONTIGUOUS
55 select HAVE_DYNAMIC_FTRACE
56 select HAVE_EXIT_THREAD
57 select HAVE_FTRACE_MCOUNT_RECORD
58 select HAVE_FUNCTION_GRAPH_TRACER
59 select HAVE_FUNCTION_TRACER
61 select HAVE_IOREMAP_PROT
62 select HAVE_IRQ_EXIT_ON_IRQ_STACK
63 select HAVE_IRQ_TIME_ACCOUNTING
65 select HAVE_KRETPROBES
66 select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
67 select HAVE_MEMBLOCK_NODE_MAP
68 select HAVE_MOD_ARCH_SPECIFIC
71 select HAVE_PERF_EVENTS
72 select HAVE_REGS_AND_STACK_ACCESS_API
74 select HAVE_STACKPROTECTOR
75 select HAVE_SYSCALL_TRACEPOINTS
76 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
77 select IRQ_FORCED_THREADING
79 select MODULES_USE_ELF_RELA if MODULES && 64BIT
80 select MODULES_USE_ELF_REL if MODULES
81 select PERF_USE_VMALLOC
83 select SYSCTL_EXCEPTION_TRACE
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
209 select SYS_HAS_CPU_MIPS32_R2
210 select SYS_HAS_EARLY_PRINTK
211 select SYS_SUPPORTS_32BIT_KERNEL
212 select SYS_SUPPORTS_BIG_ENDIAN
213 select SYS_SUPPORTS_MIPS16
214 select SYS_SUPPORTS_ZBOOT_UART_PROM
216 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
218 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
221 bool "Broadcom Generic BMIPS kernel"
222 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
223 select ARCH_HAS_PHYS_TO_DMA
225 select NO_EXCEPT_FILL
231 select BCM6345_L1_IRQ
232 select BCM7038_L1_IRQ
233 select BCM7120_L2_IRQ
234 select BRCMSTB_L2_IRQ
236 select DMA_NONCOHERENT
237 select SYS_SUPPORTS_32BIT_KERNEL
238 select SYS_SUPPORTS_LITTLE_ENDIAN
239 select SYS_SUPPORTS_BIG_ENDIAN
240 select SYS_SUPPORTS_HIGHMEM
241 select SYS_HAS_CPU_BMIPS32_3300
242 select SYS_HAS_CPU_BMIPS4350
243 select SYS_HAS_CPU_BMIPS4380
244 select SYS_HAS_CPU_BMIPS5000
246 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
247 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
248 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
249 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
250 select HARDIRQS_SW_RESEND
252 Build a generic DT-based kernel image that boots on select
253 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
254 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
255 must be set appropriately for your board.
258 bool "Broadcom BCM47XX based boards"
262 select DMA_NONCOHERENT
265 select SYS_HAS_CPU_MIPS32_R1
266 select NO_EXCEPT_FILL
267 select SYS_SUPPORTS_32BIT_KERNEL
268 select SYS_SUPPORTS_LITTLE_ENDIAN
269 select SYS_SUPPORTS_MIPS16
270 select SYS_SUPPORTS_ZBOOT
271 select SYS_HAS_EARLY_PRINTK
272 select USE_GENERIC_EARLY_PRINTK_8250
274 select LEDS_GPIO_REGISTER
277 select BCM47XX_SSB if !BCM47XX_BCMA
279 Support for BCM47XX based boards
282 bool "Broadcom BCM63XX based boards"
287 select DMA_NONCOHERENT
289 select SYS_SUPPORTS_32BIT_KERNEL
290 select SYS_SUPPORTS_BIG_ENDIAN
291 select SYS_HAS_EARLY_PRINTK
295 select MIPS_L1_CACHE_SHIFT_4
298 Support for BCM63XX based boards
305 select DMA_NONCOHERENT
311 select PCI_GT64XXX_PCI0
312 select SYS_HAS_CPU_NEVADA
313 select SYS_HAS_EARLY_PRINTK
314 select SYS_SUPPORTS_32BIT_KERNEL
315 select SYS_SUPPORTS_64BIT_KERNEL
316 select SYS_SUPPORTS_LITTLE_ENDIAN
317 select USE_GENERIC_EARLY_PRINTK_8250
319 config MACH_DECSTATION
323 select CEVT_R4K if CPU_R4X00
325 select CSRC_R4K if CPU_R4X00
326 select CPU_DADDI_WORKAROUNDS if 64BIT
327 select CPU_R4000_WORKAROUNDS if 64BIT
328 select CPU_R4400_WORKAROUNDS if 64BIT
329 select DMA_NONCOHERENT
332 select SYS_HAS_CPU_R3000
333 select SYS_HAS_CPU_R4X00
334 select SYS_SUPPORTS_32BIT_KERNEL
335 select SYS_SUPPORTS_64BIT_KERNEL
336 select SYS_SUPPORTS_LITTLE_ENDIAN
337 select SYS_SUPPORTS_128HZ
338 select SYS_SUPPORTS_256HZ
339 select SYS_SUPPORTS_1024HZ
340 select MIPS_L1_CACHE_SHIFT_4
342 This enables support for DEC's MIPS based workstations. For details
343 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
344 DECstation porting pages on <http://decstation.unix-ag.org/>.
346 If you have one of the following DECstation Models you definitely
347 want to choose R4xx0 for the CPU Type:
354 otherwise choose R3000.
357 bool "Jazz family of machines"
358 select ARCH_MIGHT_HAVE_PC_PARPORT
359 select ARCH_MIGHT_HAVE_PC_SERIO
362 select ARCH_MAY_HAVE_PC_FDC
365 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
366 select GENERIC_ISA_DMA
367 select HAVE_PCSPKR_PLATFORM
372 select SYS_HAS_CPU_R4X00
373 select SYS_SUPPORTS_32BIT_KERNEL
374 select SYS_SUPPORTS_64BIT_KERNEL
375 select SYS_SUPPORTS_100HZ
377 This a family of machines based on the MIPS R4030 chipset which was
378 used by several vendors to build RISC/os and Windows NT workstations.
379 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
380 Olivetti M700-10 workstations.
383 bool "Ingenic SoC based machines"
384 select SYS_SUPPORTS_32BIT_KERNEL
385 select SYS_SUPPORTS_LITTLE_ENDIAN
386 select SYS_SUPPORTS_ZBOOT_UART16550
387 select DMA_NONCOHERENT
392 select GENERIC_IRQ_CHIP
393 select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
398 bool "Lantiq based platforms"
399 select DMA_NONCOHERENT
403 select SYS_HAS_CPU_MIPS32_R1
404 select SYS_HAS_CPU_MIPS32_R2
405 select SYS_SUPPORTS_BIG_ENDIAN
406 select SYS_SUPPORTS_32BIT_KERNEL
407 select SYS_SUPPORTS_MIPS16
408 select SYS_SUPPORTS_MULTITHREADING
409 select SYS_SUPPORTS_VPE_LOADER
410 select SYS_HAS_EARLY_PRINTK
417 select PINCTRL_LANTIQ
418 select ARCH_HAS_RESET_CONTROLLER
419 select RESET_CONTROLLER
422 bool "LASAT Networks platforms"
426 select DMA_NONCOHERENT
427 select SYS_HAS_EARLY_PRINTK
430 select PCI_GT64XXX_PCI0
432 select R5000_CPU_SCACHE
433 select SYS_HAS_CPU_R5000
434 select SYS_SUPPORTS_32BIT_KERNEL
435 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
436 select SYS_SUPPORTS_LITTLE_ENDIAN
438 config MACH_LOONGSON32
439 bool "Loongson-1 family of machines"
440 select SYS_SUPPORTS_ZBOOT
442 This enables support for the Loongson-1 family of machines.
444 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
445 the Institute of Computing Technology (ICT), Chinese Academy of
448 config MACH_LOONGSON64
449 bool "Loongson-2/3 family of machines"
450 select SYS_SUPPORTS_ZBOOT
452 This enables the support of Loongson-2/3 family of machines.
454 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
455 family of multi-core CPUs. They are both 64-bit general-purpose
456 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
457 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
458 in the People's Republic of China. The chief architect is Professor
461 config MACH_PISTACHIO
462 bool "IMG Pistachio SoC based boards"
466 select CLKSRC_MIPS_GIC
469 select DMA_NONCOHERENT
474 select MIPS_CPU_SCACHE
478 select SYS_HAS_CPU_MIPS32_R2
479 select SYS_SUPPORTS_32BIT_KERNEL
480 select SYS_SUPPORTS_LITTLE_ENDIAN
481 select SYS_SUPPORTS_MIPS_CPS
482 select SYS_SUPPORTS_MULTITHREADING
483 select SYS_SUPPORTS_RELOCATABLE
484 select SYS_SUPPORTS_ZBOOT
485 select SYS_HAS_EARLY_PRINTK
486 select USE_GENERIC_EARLY_PRINTK_8250
489 This enables support for the IMG Pistachio SoC platform.
492 bool "MIPS Malta board"
493 select ARCH_MAY_HAVE_PC_FDC
494 select ARCH_MIGHT_HAVE_PC_PARPORT
495 select ARCH_MIGHT_HAVE_PC_SERIO
500 select CLKSRC_MIPS_GIC
503 select DMA_MAYBE_COHERENT
504 select GENERIC_ISA_DMA
505 select HAVE_PCSPKR_PLATFORM
512 select MIPS_CPU_SCACHE
514 select MIPS_L1_CACHE_SHIFT_6
516 select PCI_GT64XXX_PCI0
519 select SYS_HAS_CPU_MIPS32_R1
520 select SYS_HAS_CPU_MIPS32_R2
521 select SYS_HAS_CPU_MIPS32_R3_5
522 select SYS_HAS_CPU_MIPS32_R5
523 select SYS_HAS_CPU_MIPS32_R6
524 select SYS_HAS_CPU_MIPS64_R1
525 select SYS_HAS_CPU_MIPS64_R2
526 select SYS_HAS_CPU_MIPS64_R6
527 select SYS_HAS_CPU_NEVADA
528 select SYS_HAS_CPU_RM7000
529 select SYS_SUPPORTS_32BIT_KERNEL
530 select SYS_SUPPORTS_64BIT_KERNEL
531 select SYS_SUPPORTS_BIG_ENDIAN
532 select SYS_SUPPORTS_HIGHMEM
533 select SYS_SUPPORTS_LITTLE_ENDIAN
534 select SYS_SUPPORTS_MICROMIPS
535 select SYS_SUPPORTS_MIPS16
536 select SYS_SUPPORTS_MIPS_CMP
537 select SYS_SUPPORTS_MIPS_CPS
538 select SYS_SUPPORTS_MULTITHREADING
539 select SYS_SUPPORTS_RELOCATABLE
540 select SYS_SUPPORTS_SMARTMIPS
541 select SYS_SUPPORTS_VPE_LOADER
542 select SYS_SUPPORTS_ZBOOT
544 select ZONE_DMA32 if 64BIT
546 This enables support for the MIPS Technologies Malta evaluation
550 bool "Microchip PIC32 Family"
552 This enables support for the Microchip PIC32 family of platforms.
554 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
558 bool "NEC EMMA2RH Mark-eins board"
562 This enables support for the NEC Electronics Mark-eins boards.
565 bool "NEC VR4100 series based machines"
568 select SYS_HAS_CPU_VR41XX
569 select SYS_SUPPORTS_MIPS16
573 bool "NXP STB220 board"
576 Support for NXP Semiconductors STB220 Development Board.
583 Support for NXP Semiconductors STB225 Development Board.
586 bool "PMC-Sierra MSP chipsets"
589 select DMA_NONCOHERENT
591 select NO_EXCEPT_FILL
593 select SYS_HAS_CPU_MIPS32_R1
594 select SYS_HAS_CPU_MIPS32_R2
595 select SYS_SUPPORTS_32BIT_KERNEL
596 select SYS_SUPPORTS_BIG_ENDIAN
597 select SYS_SUPPORTS_MIPS16
600 select SERIAL_8250_CONSOLE
601 select USB_EHCI_BIG_ENDIAN_MMIO
602 select USB_EHCI_BIG_ENDIAN_DESC
604 This adds support for the PMC-Sierra family of Multi-Service
605 Processor System-On-A-Chips. These parts include a number
606 of integrated peripherals, interfaces and DSPs in addition to
607 a variety of MIPS cores.
610 bool "Ralink based machines"
614 select DMA_NONCOHERENT
617 select SYS_HAS_CPU_MIPS32_R1
618 select SYS_HAS_CPU_MIPS32_R2
619 select SYS_SUPPORTS_32BIT_KERNEL
620 select SYS_SUPPORTS_LITTLE_ENDIAN
621 select SYS_SUPPORTS_MIPS16
622 select SYS_HAS_EARLY_PRINTK
624 select ARCH_HAS_RESET_CONTROLLER
625 select RESET_CONTROLLER
628 bool "SGI IP22 (Indy/Indigo2)"
631 select ARCH_MIGHT_HAVE_PC_SERIO
635 select DEFAULT_SGI_PARTITION
636 select DMA_NONCOHERENT
640 select IP22_CPU_SCACHE
642 select GENERIC_ISA_DMA_SUPPORT_BROKEN
644 select SGI_HAS_INDYDOG
650 select SYS_HAS_CPU_R4X00
651 select SYS_HAS_CPU_R5000
653 # Disable EARLY_PRINTK for now since it leads to overwritten prom
654 # memory during early boot on some machines.
656 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
657 # for a more details discussion
659 # select SYS_HAS_EARLY_PRINTK
660 select SYS_SUPPORTS_32BIT_KERNEL
661 select SYS_SUPPORTS_64BIT_KERNEL
662 select SYS_SUPPORTS_BIG_ENDIAN
663 select MIPS_L1_CACHE_SHIFT_7
665 This are the SGI Indy, Challenge S and Indigo2, as well as certain
666 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
667 that runs on these, say Y here.
670 bool "SGI IP27 (Origin200/2000)"
671 select ARCH_HAS_PHYS_TO_DMA
675 select DEFAULT_SGI_PARTITION
676 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 GENERIC_HWEIGHT
1044 config GENERIC_CALIBRATE_DELAY
1048 config SCHED_OMIT_FRAME_POINTER
1053 # Select some configuration options automatically based on user selections.
1058 config ARCH_MAY_HAVE_PC_FDC
1094 config MIPS_CLOCK_VSYSCALL
1095 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1104 config ARCH_SUPPORTS_UPROBES
1107 config DMA_MAYBE_COHERENT
1108 select ARCH_HAS_DMA_COHERENCE_H
1109 select DMA_NONCOHERENT
1112 config DMA_PERDEV_COHERENT
1114 select ARCH_HAS_SETUP_DMA_OPS
1115 select DMA_NONCOHERENT
1117 config DMA_NONCOHERENT
1119 select ARCH_HAS_DMA_MMAP_PGPROT
1120 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1121 select NEED_DMA_MAP_STATE
1122 select ARCH_HAS_DMA_COHERENT_TO_PFN
1123 select DMA_NONCOHERENT_CACHE_SYNC
1125 config SYS_HAS_EARLY_PRINTK
1128 config SYS_SUPPORTS_HOTPLUG_CPU
1131 config MIPS_BONITO64
1146 config NO_IOPORT_MAP
1151 default y if !CPU_HAS_LOAD_STORE_LR
1153 config GENERIC_ISA_DMA
1155 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1158 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1160 select GENERIC_ISA_DMA
1165 config HOLES_IN_ZONE
1168 config SYS_SUPPORTS_RELOCATABLE
1171 Selected if the platform supports relocating the kernel.
1172 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1173 to allow access to command line and entropy sources.
1175 config MIPS_CBPF_JIT
1177 depends on BPF_JIT && HAVE_CBPF_JIT
1179 config MIPS_EBPF_JIT
1181 depends on BPF_JIT && HAVE_EBPF_JIT
1185 # Endianness selection. Sufficiently obscure so many users don't know what to
1186 # answer,so we try hard to limit the available choices. Also the use of a
1187 # choice statement should be more obvious to the user.
1190 prompt "Endianness selection"
1192 Some MIPS machines can be configured for either little or big endian
1193 byte order. These modes require different kernels and a different
1194 Linux distribution. In general there is one preferred byteorder for a
1195 particular system but some systems are just as commonly used in the
1196 one or the other endianness.
1198 config CPU_BIG_ENDIAN
1200 depends on SYS_SUPPORTS_BIG_ENDIAN
1202 config CPU_LITTLE_ENDIAN
1203 bool "Little endian"
1204 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1211 config SYS_SUPPORTS_APM_EMULATION
1214 config SYS_SUPPORTS_BIG_ENDIAN
1217 config SYS_SUPPORTS_LITTLE_ENDIAN
1220 config SYS_SUPPORTS_HUGETLBFS
1222 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1225 config MIPS_HUGE_TLB_SUPPORT
1226 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1243 config PCI_GT64XXX_PCI0
1246 config NO_EXCEPT_FILL
1253 select DMA_NONCOHERENT
1255 select SWAP_IO_SPACE
1256 select SYS_HAS_CPU_R5500
1257 select SYS_SUPPORTS_32BIT_KERNEL
1258 select SYS_SUPPORTS_64BIT_KERNEL
1259 select SYS_SUPPORTS_BIG_ENDIAN
1266 select DMA_NONCOHERENT
1267 select SYS_HAS_CPU_MIPS32_R2
1268 select SYS_SUPPORTS_32BIT_KERNEL
1269 select SYS_SUPPORTS_LITTLE_ENDIAN
1270 select SYS_SUPPORTS_BIG_ENDIAN
1271 select SYS_SUPPORTS_MIPS16
1272 select CPU_MIPSR2_IRQ_VI
1281 config SWAP_IO_SPACE
1284 config SGI_HAS_INDYDOG
1296 config SGI_HAS_ZILOG
1299 config SGI_HAS_I8042
1302 config DEFAULT_SGI_PARTITION
1314 config MIPS_L1_CACHE_SHIFT_4
1317 config MIPS_L1_CACHE_SHIFT_5
1320 config MIPS_L1_CACHE_SHIFT_6
1323 config MIPS_L1_CACHE_SHIFT_7
1326 config MIPS_L1_CACHE_SHIFT
1328 default "7" if MIPS_L1_CACHE_SHIFT_7
1329 default "6" if MIPS_L1_CACHE_SHIFT_6
1330 default "5" if MIPS_L1_CACHE_SHIFT_5
1331 default "4" if MIPS_L1_CACHE_SHIFT_4
1334 config HAVE_STD_PC_SERIAL_PORT
1338 bool "ARC console support"
1339 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1343 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1348 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1357 menu "CPU selection"
1363 config CPU_LOONGSON3
1364 bool "Loongson 3 CPU"
1365 depends on SYS_HAS_CPU_LOONGSON3
1366 select ARCH_HAS_PHYS_TO_DMA
1367 select CPU_SUPPORTS_64BIT_KERNEL
1368 select CPU_SUPPORTS_HIGHMEM
1369 select CPU_SUPPORTS_HUGEPAGES
1370 select CPU_HAS_LOAD_STORE_LR
1371 select WEAK_ORDERING
1372 select WEAK_REORDERING_BEYOND_LLSC
1373 select MIPS_PGD_C0_CONTEXT
1374 select MIPS_L1_CACHE_SHIFT_6
1378 The Loongson 3 processor implements the MIPS64R2 instruction
1379 set with many extensions.
1381 config LOONGSON3_ENHANCEMENT
1382 bool "New Loongson 3 CPU Enhancements"
1385 select CPU_HAS_PREFETCH
1386 depends on CPU_LOONGSON3
1388 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1389 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1390 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1391 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1392 Fast TLB refill support, etc.
1394 This option enable those enhancements which are not probed at run
1395 time. If you want a generic kernel to run on all Loongson 3 machines,
1396 please say 'N' here. If you want a high-performance kernel to run on
1397 new Loongson 3 machines only, please say 'Y' here.
1399 config CPU_LOONGSON3_WORKAROUNDS
1400 bool "Old Loongson 3 LLSC Workarounds"
1402 depends on CPU_LOONGSON3
1404 Loongson 3 processors have the llsc issues which require workarounds.
1405 Without workarounds the system may hang unexpectedly.
1407 Newer Loongson 3 will fix these issues and no workarounds are needed.
1408 The workarounds have no significant side effect on them but may
1409 decrease the performance of the system so this option should be
1410 disabled unless the kernel is intended to be run on old systems.
1412 If unsure, please say Y.
1414 config CPU_LOONGSON2E
1416 depends on SYS_HAS_CPU_LOONGSON2E
1417 select CPU_LOONGSON2
1419 The Loongson 2E processor implements the MIPS III instruction set
1420 with many extensions.
1422 It has an internal FPGA northbridge, which is compatible to
1425 config CPU_LOONGSON2F
1427 depends on SYS_HAS_CPU_LOONGSON2F
1428 select CPU_LOONGSON2
1431 The Loongson 2F processor implements the MIPS III instruction set
1432 with many extensions.
1434 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1435 have a similar programming interface with FPGA northbridge used in
1438 config CPU_LOONGSON1B
1440 depends on SYS_HAS_CPU_LOONGSON1B
1441 select CPU_LOONGSON1
1442 select LEDS_GPIO_REGISTER
1444 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1445 Release 1 instruction set and part of the MIPS32 Release 2
1448 config CPU_LOONGSON1C
1450 depends on SYS_HAS_CPU_LOONGSON1C
1451 select CPU_LOONGSON1
1452 select LEDS_GPIO_REGISTER
1454 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1455 Release 1 instruction set and part of the MIPS32 Release 2
1458 config CPU_MIPS32_R1
1459 bool "MIPS32 Release 1"
1460 depends on SYS_HAS_CPU_MIPS32_R1
1461 select CPU_HAS_PREFETCH
1462 select CPU_HAS_LOAD_STORE_LR
1463 select CPU_SUPPORTS_32BIT_KERNEL
1464 select CPU_SUPPORTS_HIGHMEM
1466 Choose this option to build a kernel for release 1 or later of the
1467 MIPS32 architecture. Most modern embedded systems with a 32-bit
1468 MIPS processor are based on a MIPS32 processor. If you know the
1469 specific type of processor in your system, choose those that one
1470 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1471 Release 2 of the MIPS32 architecture is available since several
1472 years so chances are you even have a MIPS32 Release 2 processor
1473 in which case you should choose CPU_MIPS32_R2 instead for better
1476 config CPU_MIPS32_R2
1477 bool "MIPS32 Release 2"
1478 depends on SYS_HAS_CPU_MIPS32_R2
1479 select CPU_HAS_PREFETCH
1480 select CPU_HAS_LOAD_STORE_LR
1481 select CPU_SUPPORTS_32BIT_KERNEL
1482 select CPU_SUPPORTS_HIGHMEM
1483 select CPU_SUPPORTS_MSA
1486 Choose this option to build a kernel for release 2 or later of the
1487 MIPS32 architecture. Most modern embedded systems with a 32-bit
1488 MIPS processor are based on a MIPS32 processor. If you know the
1489 specific type of processor in your system, choose those that one
1490 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1492 config CPU_MIPS32_R6
1493 bool "MIPS32 Release 6"
1494 depends on SYS_HAS_CPU_MIPS32_R6
1495 select CPU_HAS_PREFETCH
1496 select CPU_SUPPORTS_32BIT_KERNEL
1497 select CPU_SUPPORTS_HIGHMEM
1498 select CPU_SUPPORTS_MSA
1500 select MIPS_O32_FP64_SUPPORT
1502 Choose this option to build a kernel for release 6 or later of the
1503 MIPS32 architecture. New MIPS processors, starting with the Warrior
1504 family, are based on a MIPS32r6 processor. If you own an older
1505 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1507 config CPU_MIPS64_R1
1508 bool "MIPS64 Release 1"
1509 depends on SYS_HAS_CPU_MIPS64_R1
1510 select CPU_HAS_PREFETCH
1511 select CPU_HAS_LOAD_STORE_LR
1512 select CPU_SUPPORTS_32BIT_KERNEL
1513 select CPU_SUPPORTS_64BIT_KERNEL
1514 select CPU_SUPPORTS_HIGHMEM
1515 select CPU_SUPPORTS_HUGEPAGES
1517 Choose this option to build a kernel for release 1 or later of the
1518 MIPS64 architecture. Many modern embedded systems with a 64-bit
1519 MIPS processor are based on a MIPS64 processor. If you know the
1520 specific type of processor in your system, choose those that one
1521 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1522 Release 2 of the MIPS64 architecture is available since several
1523 years so chances are you even have a MIPS64 Release 2 processor
1524 in which case you should choose CPU_MIPS64_R2 instead for better
1527 config CPU_MIPS64_R2
1528 bool "MIPS64 Release 2"
1529 depends on SYS_HAS_CPU_MIPS64_R2
1530 select CPU_HAS_PREFETCH
1531 select CPU_HAS_LOAD_STORE_LR
1532 select CPU_SUPPORTS_32BIT_KERNEL
1533 select CPU_SUPPORTS_64BIT_KERNEL
1534 select CPU_SUPPORTS_HIGHMEM
1535 select CPU_SUPPORTS_HUGEPAGES
1536 select CPU_SUPPORTS_MSA
1539 Choose this option to build a kernel for release 2 or later of the
1540 MIPS64 architecture. Many modern embedded systems with a 64-bit
1541 MIPS processor are based on a MIPS64 processor. If you know the
1542 specific type of processor in your system, choose those that one
1543 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1545 config CPU_MIPS64_R6
1546 bool "MIPS64 Release 6"
1547 depends on SYS_HAS_CPU_MIPS64_R6
1548 select CPU_HAS_PREFETCH
1549 select CPU_SUPPORTS_32BIT_KERNEL
1550 select CPU_SUPPORTS_64BIT_KERNEL
1551 select CPU_SUPPORTS_HIGHMEM
1552 select CPU_SUPPORTS_HUGEPAGES
1553 select CPU_SUPPORTS_MSA
1554 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1557 Choose this option to build a kernel for release 6 or later of the
1558 MIPS64 architecture. New MIPS processors, starting with the Warrior
1559 family, are based on a MIPS64r6 processor. If you own an older
1560 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1564 depends on SYS_HAS_CPU_R3000
1566 select CPU_HAS_LOAD_STORE_LR
1567 select CPU_SUPPORTS_32BIT_KERNEL
1568 select CPU_SUPPORTS_HIGHMEM
1570 Please make sure to pick the right CPU type. Linux/MIPS is not
1571 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1572 *not* work on R4000 machines and vice versa. However, since most
1573 of the supported machines have an R4000 (or similar) CPU, R4x00
1574 might be a safe bet. If the resulting kernel does not work,
1575 try to recompile with R3000.
1579 depends on SYS_HAS_CPU_TX39XX
1580 select CPU_SUPPORTS_32BIT_KERNEL
1581 select CPU_HAS_LOAD_STORE_LR
1585 depends on SYS_HAS_CPU_VR41XX
1586 select CPU_SUPPORTS_32BIT_KERNEL
1587 select CPU_SUPPORTS_64BIT_KERNEL
1588 select CPU_HAS_LOAD_STORE_LR
1590 The options selects support for the NEC VR4100 series of processors.
1591 Only choose this option if you have one of these processors as a
1592 kernel built with this option will not run on any other type of
1593 processor or vice versa.
1597 depends on SYS_HAS_CPU_R4300
1598 select CPU_SUPPORTS_32BIT_KERNEL
1599 select CPU_SUPPORTS_64BIT_KERNEL
1600 select CPU_HAS_LOAD_STORE_LR
1602 MIPS Technologies R4300-series processors.
1606 depends on SYS_HAS_CPU_R4X00
1607 select CPU_SUPPORTS_32BIT_KERNEL
1608 select CPU_SUPPORTS_64BIT_KERNEL
1609 select CPU_SUPPORTS_HUGEPAGES
1610 select CPU_HAS_LOAD_STORE_LR
1612 MIPS Technologies R4000-series processors other than 4300, including
1613 the R4000, R4400, R4600, and 4700.
1617 depends on SYS_HAS_CPU_TX49XX
1618 select CPU_HAS_PREFETCH
1619 select CPU_HAS_LOAD_STORE_LR
1620 select CPU_SUPPORTS_32BIT_KERNEL
1621 select CPU_SUPPORTS_64BIT_KERNEL
1622 select CPU_SUPPORTS_HUGEPAGES
1626 depends on SYS_HAS_CPU_R5000
1627 select CPU_SUPPORTS_32BIT_KERNEL
1628 select CPU_SUPPORTS_64BIT_KERNEL
1629 select CPU_SUPPORTS_HUGEPAGES
1630 select CPU_HAS_LOAD_STORE_LR
1632 MIPS Technologies R5000-series processors other than the Nevada.
1636 depends on SYS_HAS_CPU_R5432
1637 select CPU_SUPPORTS_32BIT_KERNEL
1638 select CPU_SUPPORTS_64BIT_KERNEL
1639 select CPU_SUPPORTS_HUGEPAGES
1640 select CPU_HAS_LOAD_STORE_LR
1644 depends on SYS_HAS_CPU_R5500
1645 select CPU_SUPPORTS_32BIT_KERNEL
1646 select CPU_SUPPORTS_64BIT_KERNEL
1647 select CPU_SUPPORTS_HUGEPAGES
1648 select CPU_HAS_LOAD_STORE_LR
1650 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1655 depends on SYS_HAS_CPU_NEVADA
1656 select CPU_SUPPORTS_32BIT_KERNEL
1657 select CPU_SUPPORTS_64BIT_KERNEL
1658 select CPU_SUPPORTS_HUGEPAGES
1659 select CPU_HAS_LOAD_STORE_LR
1661 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1665 depends on SYS_HAS_CPU_R8000
1666 select CPU_HAS_PREFETCH
1667 select CPU_HAS_LOAD_STORE_LR
1668 select CPU_SUPPORTS_64BIT_KERNEL
1670 MIPS Technologies R8000 processors. Note these processors are
1671 uncommon and the support for them is incomplete.
1675 depends on SYS_HAS_CPU_R10000
1676 select CPU_HAS_PREFETCH
1677 select CPU_HAS_LOAD_STORE_LR
1678 select CPU_SUPPORTS_32BIT_KERNEL
1679 select CPU_SUPPORTS_64BIT_KERNEL
1680 select CPU_SUPPORTS_HIGHMEM
1681 select CPU_SUPPORTS_HUGEPAGES
1683 MIPS Technologies R10000-series processors.
1687 depends on SYS_HAS_CPU_RM7000
1688 select CPU_HAS_PREFETCH
1689 select CPU_HAS_LOAD_STORE_LR
1690 select CPU_SUPPORTS_32BIT_KERNEL
1691 select CPU_SUPPORTS_64BIT_KERNEL
1692 select CPU_SUPPORTS_HIGHMEM
1693 select CPU_SUPPORTS_HUGEPAGES
1697 depends on SYS_HAS_CPU_SB1
1698 select CPU_HAS_LOAD_STORE_LR
1699 select CPU_SUPPORTS_32BIT_KERNEL
1700 select CPU_SUPPORTS_64BIT_KERNEL
1701 select CPU_SUPPORTS_HIGHMEM
1702 select CPU_SUPPORTS_HUGEPAGES
1703 select WEAK_ORDERING
1705 config CPU_CAVIUM_OCTEON
1706 bool "Cavium Octeon processor"
1707 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1708 select CPU_HAS_PREFETCH
1709 select CPU_HAS_LOAD_STORE_LR
1710 select CPU_SUPPORTS_64BIT_KERNEL
1711 select WEAK_ORDERING
1712 select CPU_SUPPORTS_HIGHMEM
1713 select CPU_SUPPORTS_HUGEPAGES
1714 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1715 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1716 select MIPS_L1_CACHE_SHIFT_7
1719 The Cavium Octeon processor is a highly integrated chip containing
1720 many ethernet hardware widgets for networking tasks. The processor
1721 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1722 Full details can be found at http://www.caviumnetworks.com.
1725 bool "Broadcom BMIPS"
1726 depends on SYS_HAS_CPU_BMIPS
1728 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1729 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1730 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1731 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1732 select CPU_SUPPORTS_32BIT_KERNEL
1733 select DMA_NONCOHERENT
1735 select SWAP_IO_SPACE
1736 select WEAK_ORDERING
1737 select CPU_SUPPORTS_HIGHMEM
1738 select CPU_HAS_PREFETCH
1739 select CPU_HAS_LOAD_STORE_LR
1740 select CPU_SUPPORTS_CPUFREQ
1741 select MIPS_EXTERNAL_TIMER
1743 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1746 bool "Netlogic XLR SoC"
1747 depends on SYS_HAS_CPU_XLR
1748 select CPU_HAS_LOAD_STORE_LR
1749 select CPU_SUPPORTS_32BIT_KERNEL
1750 select CPU_SUPPORTS_64BIT_KERNEL
1751 select CPU_SUPPORTS_HIGHMEM
1752 select CPU_SUPPORTS_HUGEPAGES
1753 select WEAK_ORDERING
1754 select WEAK_REORDERING_BEYOND_LLSC
1756 Netlogic Microsystems XLR/XLS processors.
1759 bool "Netlogic XLP SoC"
1760 depends on SYS_HAS_CPU_XLP
1761 select CPU_SUPPORTS_32BIT_KERNEL
1762 select CPU_SUPPORTS_64BIT_KERNEL
1763 select CPU_SUPPORTS_HIGHMEM
1764 select WEAK_ORDERING
1765 select WEAK_REORDERING_BEYOND_LLSC
1766 select CPU_HAS_PREFETCH
1767 select CPU_HAS_LOAD_STORE_LR
1769 select CPU_SUPPORTS_HUGEPAGES
1770 select MIPS_ASID_BITS_VARIABLE
1772 Netlogic Microsystems XLP processors.
1775 config CPU_MIPS32_3_5_FEATURES
1776 bool "MIPS32 Release 3.5 Features"
1777 depends on SYS_HAS_CPU_MIPS32_R3_5
1778 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1780 Choose this option to build a kernel for release 2 or later of the
1781 MIPS32 architecture including features from the 3.5 release such as
1782 support for Enhanced Virtual Addressing (EVA).
1784 config CPU_MIPS32_3_5_EVA
1785 bool "Enhanced Virtual Addressing (EVA)"
1786 depends on CPU_MIPS32_3_5_FEATURES
1790 Choose this option if you want to enable the Enhanced Virtual
1791 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1792 One of its primary benefits is an increase in the maximum size
1793 of lowmem (up to 3GB). If unsure, say 'N' here.
1795 config CPU_MIPS32_R5_FEATURES
1796 bool "MIPS32 Release 5 Features"
1797 depends on SYS_HAS_CPU_MIPS32_R5
1798 depends on CPU_MIPS32_R2
1800 Choose this option to build a kernel for release 2 or later of the
1801 MIPS32 architecture including features from release 5 such as
1802 support for Extended Physical Addressing (XPA).
1804 config CPU_MIPS32_R5_XPA
1805 bool "Extended Physical Addressing (XPA)"
1806 depends on CPU_MIPS32_R5_FEATURES
1808 depends on !PAGE_SIZE_4KB
1809 depends on SYS_SUPPORTS_HIGHMEM
1812 select PHYS_ADDR_T_64BIT
1815 Choose this option if you want to enable the Extended Physical
1816 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1817 benefit is to increase physical addressing equal to or greater
1818 than 40 bits. Note that this has the side effect of turning on
1819 64-bit addressing which in turn makes the PTEs 64-bit in size.
1820 If unsure, say 'N' here.
1823 config CPU_NOP_WORKAROUNDS
1826 config CPU_JUMP_WORKAROUNDS
1829 config CPU_LOONGSON2F_WORKAROUNDS
1830 bool "Loongson 2F Workarounds"
1832 select CPU_NOP_WORKAROUNDS
1833 select CPU_JUMP_WORKAROUNDS
1835 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1836 require workarounds. Without workarounds the system may hang
1837 unexpectedly. For more information please refer to the gas
1838 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1840 Loongson 2F03 and later have fixed these issues and no workarounds
1841 are needed. The workarounds have no significant side effect on them
1842 but may decrease the performance of the system so this option should
1843 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1846 If unsure, please say Y.
1847 endif # CPU_LOONGSON2F
1849 config SYS_SUPPORTS_ZBOOT
1851 select HAVE_KERNEL_GZIP
1852 select HAVE_KERNEL_BZIP2
1853 select HAVE_KERNEL_LZ4
1854 select HAVE_KERNEL_LZMA
1855 select HAVE_KERNEL_LZO
1856 select HAVE_KERNEL_XZ
1858 config SYS_SUPPORTS_ZBOOT_UART16550
1860 select SYS_SUPPORTS_ZBOOT
1862 config SYS_SUPPORTS_ZBOOT_UART_PROM
1864 select SYS_SUPPORTS_ZBOOT
1866 config CPU_LOONGSON2
1868 select CPU_SUPPORTS_32BIT_KERNEL
1869 select CPU_SUPPORTS_64BIT_KERNEL
1870 select CPU_SUPPORTS_HIGHMEM
1871 select CPU_SUPPORTS_HUGEPAGES
1872 select ARCH_HAS_PHYS_TO_DMA
1873 select CPU_HAS_LOAD_STORE_LR
1875 config CPU_LOONGSON1
1879 select CPU_HAS_PREFETCH
1880 select CPU_HAS_LOAD_STORE_LR
1881 select CPU_SUPPORTS_32BIT_KERNEL
1882 select CPU_SUPPORTS_HIGHMEM
1883 select CPU_SUPPORTS_CPUFREQ
1885 config CPU_BMIPS32_3300
1886 select SMP_UP if SMP
1889 config CPU_BMIPS4350
1891 select SYS_SUPPORTS_SMP
1892 select SYS_SUPPORTS_HOTPLUG_CPU
1894 config CPU_BMIPS4380
1896 select MIPS_L1_CACHE_SHIFT_6
1897 select SYS_SUPPORTS_SMP
1898 select SYS_SUPPORTS_HOTPLUG_CPU
1901 config CPU_BMIPS5000
1903 select MIPS_CPU_SCACHE
1904 select MIPS_L1_CACHE_SHIFT_7
1905 select SYS_SUPPORTS_SMP
1906 select SYS_SUPPORTS_HOTPLUG_CPU
1909 config SYS_HAS_CPU_LOONGSON3
1911 select CPU_SUPPORTS_CPUFREQ
1914 config SYS_HAS_CPU_LOONGSON2E
1917 config SYS_HAS_CPU_LOONGSON2F
1919 select CPU_SUPPORTS_CPUFREQ
1920 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1921 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1923 config SYS_HAS_CPU_LOONGSON1B
1926 config SYS_HAS_CPU_LOONGSON1C
1929 config SYS_HAS_CPU_MIPS32_R1
1932 config SYS_HAS_CPU_MIPS32_R2
1935 config SYS_HAS_CPU_MIPS32_R3_5
1938 config SYS_HAS_CPU_MIPS32_R5
1940 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1942 config SYS_HAS_CPU_MIPS32_R6
1944 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1946 config SYS_HAS_CPU_MIPS64_R1
1949 config SYS_HAS_CPU_MIPS64_R2
1952 config SYS_HAS_CPU_MIPS64_R6
1954 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1956 config SYS_HAS_CPU_R3000
1959 config SYS_HAS_CPU_TX39XX
1962 config SYS_HAS_CPU_VR41XX
1965 config SYS_HAS_CPU_R4300
1968 config SYS_HAS_CPU_R4X00
1971 config SYS_HAS_CPU_TX49XX
1974 config SYS_HAS_CPU_R5000
1977 config SYS_HAS_CPU_R5432
1980 config SYS_HAS_CPU_R5500
1983 config SYS_HAS_CPU_NEVADA
1986 config SYS_HAS_CPU_R8000
1989 config SYS_HAS_CPU_R10000
1991 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1993 config SYS_HAS_CPU_RM7000
1996 config SYS_HAS_CPU_SB1
1999 config SYS_HAS_CPU_CAVIUM_OCTEON
2002 config SYS_HAS_CPU_BMIPS
2005 config SYS_HAS_CPU_BMIPS32_3300
2007 select SYS_HAS_CPU_BMIPS
2009 config SYS_HAS_CPU_BMIPS4350
2011 select SYS_HAS_CPU_BMIPS
2013 config SYS_HAS_CPU_BMIPS4380
2015 select SYS_HAS_CPU_BMIPS
2017 config SYS_HAS_CPU_BMIPS5000
2019 select SYS_HAS_CPU_BMIPS
2020 select ARCH_HAS_SYNC_DMA_FOR_CPU
2022 config SYS_HAS_CPU_XLR
2025 config SYS_HAS_CPU_XLP
2029 # CPU may reorder R->R, R->W, W->R, W->W
2030 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2032 config WEAK_ORDERING
2036 # CPU may reorder reads and writes beyond LL/SC
2037 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2039 config WEAK_REORDERING_BEYOND_LLSC
2044 # These two indicate any level of the MIPS32 and MIPS64 architecture
2048 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2052 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2055 # These indicate the revision of the architecture
2059 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2063 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2069 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2071 select HAVE_ARCH_BITREVERSE
2072 select MIPS_ASID_BITS_VARIABLE
2073 select MIPS_CRC_SUPPORT
2076 config TARGET_ISA_REV
2078 default 1 if CPU_MIPSR1
2079 default 2 if CPU_MIPSR2
2080 default 6 if CPU_MIPSR6
2083 Reflects the ISA revision being targeted by the kernel build. This
2084 is effectively the Kconfig equivalent of MIPS_ISA_REV.
2092 config SYS_SUPPORTS_32BIT_KERNEL
2094 config SYS_SUPPORTS_64BIT_KERNEL
2096 config CPU_SUPPORTS_32BIT_KERNEL
2098 config CPU_SUPPORTS_64BIT_KERNEL
2100 config CPU_SUPPORTS_CPUFREQ
2102 config CPU_SUPPORTS_ADDRWINCFG
2104 config CPU_SUPPORTS_HUGEPAGES
2106 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2108 config MIPS_PGD_C0_CONTEXT
2110 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2113 # Set to y for ptrace access to watch registers.
2115 config HARDWARE_WATCHPOINTS
2117 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2122 prompt "Kernel code model"
2124 You should only select this option if you have a workload that
2125 actually benefits from 64-bit processing or if your machine has
2126 large memory. You will only be presented a single option in this
2127 menu if your system does not support both 32-bit and 64-bit kernels.
2130 bool "32-bit kernel"
2131 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2134 Select this option if you want to build a 32-bit kernel.
2137 bool "64-bit kernel"
2138 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2140 Select this option if you want to build a 64-bit kernel.
2145 bool "KVM Guest Kernel"
2146 depends on BROKEN_ON_SMP
2148 Select this option if building a guest kernel for KVM (Trap & Emulate)
2151 config KVM_GUEST_TIMER_FREQ
2152 int "Count/Compare Timer Frequency (MHz)"
2153 depends on KVM_GUEST
2156 Set this to non-zero if building a guest kernel for KVM to skip RTC
2157 emulation when determining guest CPU Frequency. Instead, the guest's
2158 timer frequency is specified directly.
2160 config MIPS_VA_BITS_48
2161 bool "48 bits virtual memory"
2164 Support a maximum at least 48 bits of application virtual
2165 memory. Default is 40 bits or less, depending on the CPU.
2166 For page sizes 16k and above, this option results in a small
2167 memory overhead for page tables. For 4k page size, a fourth
2168 level of page tables is added which imposes both a memory
2169 overhead as well as slower TLB fault handling.
2174 prompt "Kernel page size"
2175 default PAGE_SIZE_4KB
2177 config PAGE_SIZE_4KB
2179 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2181 This option select the standard 4kB Linux page size. On some
2182 R3000-family processors this is the only available page size. Using
2183 4kB page size will minimize memory consumption and is therefore
2184 recommended for low memory systems.
2186 config PAGE_SIZE_8KB
2188 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2189 depends on !MIPS_VA_BITS_48
2191 Using 8kB page size will result in higher performance kernel at
2192 the price of higher memory consumption. This option is available
2193 only on R8000 and cnMIPS processors. Note that you will need a
2194 suitable Linux distribution to support this.
2196 config PAGE_SIZE_16KB
2198 depends on !CPU_R3000 && !CPU_TX39XX
2200 Using 16kB page size will result in higher performance kernel at
2201 the price of higher memory consumption. This option is available on
2202 all non-R3000 family processors. Note that you will need a suitable
2203 Linux distribution to support this.
2205 config PAGE_SIZE_32KB
2207 depends on CPU_CAVIUM_OCTEON
2208 depends on !MIPS_VA_BITS_48
2210 Using 32kB page size will result in higher performance kernel at
2211 the price of higher memory consumption. This option is available
2212 only on cnMIPS cores. Note that you will need a suitable Linux
2213 distribution to support this.
2215 config PAGE_SIZE_64KB
2217 depends on !CPU_R3000 && !CPU_TX39XX
2219 Using 64kB page size will result in higher performance kernel at
2220 the price of higher memory consumption. This option is available on
2221 all non-R3000 family processor. Not that at the time of this
2222 writing this option is still high experimental.
2226 config FORCE_MAX_ZONEORDER
2227 int "Maximum zone order"
2228 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2229 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2230 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2231 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2232 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2233 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2237 The kernel memory allocator divides physically contiguous memory
2238 blocks into "zones", where each zone is a power of two number of
2239 pages. This option selects the largest power of two that the kernel
2240 keeps in the memory allocator. If you need to allocate very large
2241 blocks of physically contiguous memory, then you may need to
2242 increase this value.
2244 This config option is actually maximum order plus one. For example,
2245 a value of 11 means that the largest free memory block is 2^10 pages.
2247 The page size is not necessarily 4KB. Keep this in mind
2248 when choosing a value for this option.
2253 config IP22_CPU_SCACHE
2258 # Support for a MIPS32 / MIPS64 style S-caches
2260 config MIPS_CPU_SCACHE
2264 config R5000_CPU_SCACHE
2268 config RM7000_CPU_SCACHE
2272 config SIBYTE_DMA_PAGEOPS
2273 bool "Use DMA to clear/copy pages"
2276 Instead of using the CPU to zero and copy pages, use a Data Mover
2277 channel. These DMA channels are otherwise unused by the standard
2278 SiByte Linux port. Seems to give a small performance benefit.
2280 config CPU_HAS_PREFETCH
2283 config CPU_GENERIC_DUMP_TLB
2285 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
2287 config MIPS_FP_SUPPORT
2288 bool "Floating Point support" if EXPERT
2291 Select y to include support for floating point in the kernel
2292 including initialization of FPU hardware, FP context save & restore
2293 and emulation of an FPU where necessary. Without this support any
2294 userland program attempting to use floating point instructions will
2297 If you know that your userland will not attempt to use floating point
2298 instructions then you can say n here to shrink the kernel a little.
2302 config CPU_R2300_FPU
2304 depends on MIPS_FP_SUPPORT
2305 default y if CPU_R3000 || CPU_TX39XX
2309 depends on MIPS_FP_SUPPORT
2310 default y if !CPU_R2300_FPU
2312 config CPU_R4K_CACHE_TLB
2314 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2317 bool "MIPS MT SMP support (1 TC on each available VPE)"
2319 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2320 select CPU_MIPSR2_IRQ_VI
2321 select CPU_MIPSR2_IRQ_EI
2326 select SYS_SUPPORTS_SMP
2327 select SYS_SUPPORTS_SCHED_SMT
2328 select MIPS_PERF_SHARED_TC_COUNTERS
2330 This is a kernel model which is known as SMVP. This is supported
2331 on cores with the MT ASE and uses the available VPEs to implement
2332 virtual processors which supports SMP. This is equivalent to the
2333 Intel Hyperthreading feature. For further information go to
2334 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2340 bool "SMT (multithreading) scheduler support"
2341 depends on SYS_SUPPORTS_SCHED_SMT
2344 SMT scheduler support improves the CPU scheduler's decision making
2345 when dealing with MIPS MT enabled cores at a cost of slightly
2346 increased overhead in some places. If unsure say N here.
2348 config SYS_SUPPORTS_SCHED_SMT
2351 config SYS_SUPPORTS_MULTITHREADING
2354 config MIPS_MT_FPAFF
2355 bool "Dynamic FPU affinity for FP-intensive threads"
2357 depends on MIPS_MT_SMP
2359 config MIPSR2_TO_R6_EMULATOR
2360 bool "MIPS R2-to-R6 emulator"
2361 depends on CPU_MIPSR6
2362 depends on MIPS_FP_SUPPORT
2365 Choose this option if you want to run non-R6 MIPS userland code.
2366 Even if you say 'Y' here, the emulator will still be disabled by
2367 default. You can enable it using the 'mipsr2emu' kernel option.
2368 The only reason this is a build-time option is to save ~14K from the
2371 config SYS_SUPPORTS_VPE_LOADER
2373 depends on SYS_SUPPORTS_MULTITHREADING
2375 Indicates that the platform supports the VPE loader, and provides
2378 config MIPS_VPE_LOADER
2379 bool "VPE loader support."
2380 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2381 select CPU_MIPSR2_IRQ_VI
2382 select CPU_MIPSR2_IRQ_EI
2385 Includes a loader for loading an elf relocatable object
2386 onto another VPE and running it.
2388 config MIPS_VPE_LOADER_CMP
2391 depends on MIPS_VPE_LOADER && MIPS_CMP
2393 config MIPS_VPE_LOADER_MT
2396 depends on MIPS_VPE_LOADER && !MIPS_CMP
2398 config MIPS_VPE_LOADER_TOM
2399 bool "Load VPE program into memory hidden from linux"
2400 depends on MIPS_VPE_LOADER
2403 The loader can use memory that is present but has been hidden from
2404 Linux using the kernel command line option "mem=xxMB". It's up to
2405 you to ensure the amount you put in the option and the space your
2406 program requires is less or equal to the amount physically present.
2408 config MIPS_VPE_APSP_API
2409 bool "Enable support for AP/SP API (RTLX)"
2410 depends on MIPS_VPE_LOADER
2412 config MIPS_VPE_APSP_API_CMP
2415 depends on MIPS_VPE_APSP_API && MIPS_CMP
2417 config MIPS_VPE_APSP_API_MT
2420 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2423 bool "MIPS CMP framework support (DEPRECATED)"
2424 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2427 select SYS_SUPPORTS_SMP
2428 select WEAK_ORDERING
2431 Select this if you are using a bootloader which implements the "CMP
2432 framework" protocol (ie. YAMON) and want your kernel to make use of
2433 its ability to start secondary CPUs.
2435 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2439 bool "MIPS Coherent Processing System support"
2440 depends on SYS_SUPPORTS_MIPS_CPS
2442 select MIPS_CPS_PM if HOTPLUG_CPU
2444 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2445 select SYS_SUPPORTS_HOTPLUG_CPU
2446 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2447 select SYS_SUPPORTS_SMP
2448 select WEAK_ORDERING
2450 Select this if you wish to run an SMP kernel across multiple cores
2451 within a MIPS Coherent Processing System. When this option is
2452 enabled the kernel will probe for other cores and boot them with
2453 no external assistance. It is safe to enable this when hardware
2454 support is unavailable.
2467 config SB1_PASS_2_WORKAROUNDS
2469 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2472 config SB1_PASS_2_1_WORKAROUNDS
2474 depends on CPU_SB1 && CPU_SB1_PASS_2
2479 prompt "SmartMIPS or microMIPS ASE support"
2481 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2484 Select this if you want neither microMIPS nor SmartMIPS support
2486 config CPU_HAS_SMARTMIPS
2487 depends on SYS_SUPPORTS_SMARTMIPS
2490 SmartMIPS is a extension of the MIPS32 architecture aimed at
2491 increased security at both hardware and software level for
2492 smartcards. Enabling this option will allow proper use of the
2493 SmartMIPS instructions by Linux applications. However a kernel with
2494 this option will not work on a MIPS core without SmartMIPS core. If
2495 you don't know you probably don't have SmartMIPS and should say N
2498 config CPU_MICROMIPS
2499 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2502 When this option is enabled the kernel will be built using the
2508 bool "Support for the MIPS SIMD Architecture"
2509 depends on CPU_SUPPORTS_MSA
2510 depends on MIPS_FP_SUPPORT
2511 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2513 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2514 and a set of SIMD instructions to operate on them. When this option
2515 is enabled the kernel will support allocating & switching MSA
2516 vector register contexts. If you know that your kernel will only be
2517 running on CPUs which do not support MSA or that your userland will
2518 not be making use of it then you may wish to say N here to reduce
2519 the size & complexity of your kernel.
2532 config CPU_HAS_LOAD_STORE_LR
2535 CPU has support for unaligned load and store instructions:
2536 LWL, LWR, SWL, SWR (Load/store word left/right).
2537 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit systems).
2540 # Vectored interrupt mode is an R2 feature
2542 config CPU_MIPSR2_IRQ_VI
2546 # Extended interrupt mode is an R2 feature
2548 config CPU_MIPSR2_IRQ_EI
2553 depends on !CPU_R3000
2559 config CPU_DADDI_WORKAROUNDS
2562 config CPU_R4000_WORKAROUNDS
2564 select CPU_R4400_WORKAROUNDS
2566 config CPU_R4400_WORKAROUNDS
2569 config MIPS_ASID_SHIFT
2571 default 6 if CPU_R3000 || CPU_TX39XX
2572 default 4 if CPU_R8000
2575 config MIPS_ASID_BITS
2577 default 0 if MIPS_ASID_BITS_VARIABLE
2578 default 6 if CPU_R3000 || CPU_TX39XX
2581 config MIPS_ASID_BITS_VARIABLE
2584 config MIPS_CRC_SUPPORT
2588 # - Highmem only makes sense for the 32-bit kernel.
2589 # - The current highmem code will only work properly on physically indexed
2590 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2591 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2592 # moment we protect the user and offer the highmem option only on machines
2593 # where it's known to be safe. This will not offer highmem on a few systems
2594 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2595 # indexed CPUs but we're playing safe.
2596 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2597 # know they might have memory configurations that could make use of highmem
2601 bool "High Memory Support"
2602 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2604 config CPU_SUPPORTS_HIGHMEM
2607 config SYS_SUPPORTS_HIGHMEM
2610 config SYS_SUPPORTS_SMARTMIPS
2613 config SYS_SUPPORTS_MICROMIPS
2616 config SYS_SUPPORTS_MIPS16
2619 This option must be set if a kernel might be executed on a MIPS16-
2620 enabled CPU even if MIPS16 is not actually being used. In other
2621 words, it makes the kernel MIPS16-tolerant.
2623 config CPU_SUPPORTS_MSA
2626 config ARCH_FLATMEM_ENABLE
2628 depends on !NUMA && !CPU_LOONGSON2
2630 config ARCH_DISCONTIGMEM_ENABLE
2632 default y if SGI_IP27
2634 Say Y to support efficient handling of discontiguous physical memory,
2635 for architectures which are either NUMA (Non-Uniform Memory Access)
2636 or have huge holes in the physical address space for other reasons.
2637 See <file:Documentation/vm/numa.rst> for more.
2639 config ARCH_SPARSEMEM_ENABLE
2641 select SPARSEMEM_STATIC
2645 depends on SYS_SUPPORTS_NUMA
2647 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2648 Access). This option improves performance on systems with more
2649 than two nodes; on two node systems it is generally better to
2650 leave it disabled; on single node systems disable this option
2653 config SYS_SUPPORTS_NUMA
2657 bool "Relocatable kernel"
2658 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2660 This builds a kernel image that retains relocation information
2661 so it can be loaded someplace besides the default 1MB.
2662 The relocations make the kernel binary about 15% larger,
2663 but are discarded at runtime
2665 config RELOCATION_TABLE_SIZE
2666 hex "Relocation table size"
2667 depends on RELOCATABLE
2668 range 0x0 0x01000000
2669 default "0x00100000"
2671 A table of relocation data will be appended to the kernel binary
2672 and parsed at boot to fix up the relocated kernel.
2674 This option allows the amount of space reserved for the table to be
2675 adjusted, although the default of 1Mb should be ok in most cases.
2677 The build will fail and a valid size suggested if this is too small.
2679 If unsure, leave at the default value.
2681 config RANDOMIZE_BASE
2682 bool "Randomize the address of the kernel image"
2683 depends on RELOCATABLE
2685 Randomizes the physical and virtual address at which the
2686 kernel image is loaded, as a security feature that
2687 deters exploit attempts relying on knowledge of the location
2688 of kernel internals.
2690 Entropy is generated using any coprocessor 0 registers available.
2692 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2696 config RANDOMIZE_BASE_MAX_OFFSET
2697 hex "Maximum kASLR offset" if EXPERT
2698 depends on RANDOMIZE_BASE
2699 range 0x0 0x40000000 if EVA || 64BIT
2700 range 0x0 0x08000000
2701 default "0x01000000"
2703 When kASLR is active, this provides the maximum offset that will
2704 be applied to the kernel image. It should be set according to the
2705 amount of physical RAM available in the target system minus
2706 PHYSICAL_START and must be a power of 2.
2708 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2709 EVA or 64-bit. The default is 16Mb.
2714 depends on NEED_MULTIPLE_NODES
2716 config HW_PERF_EVENTS
2717 bool "Enable hardware performance counter support for perf events"
2718 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2721 Enable hardware performance counter support for perf events. If
2722 disabled, perf events will use software events only.
2725 bool "Multi-Processing support"
2726 depends on SYS_SUPPORTS_SMP
2728 This enables support for systems with more than one CPU. If you have
2729 a system with only one CPU, say N. If you have a system with more
2730 than one CPU, say Y.
2732 If you say N here, the kernel will run on uni- and multiprocessor
2733 machines, but will use only one CPU of a multiprocessor machine. If
2734 you say Y here, the kernel will run on many, but not all,
2735 uniprocessor machines. On a uniprocessor machine, the kernel
2736 will run faster if you say N here.
2738 People using multiprocessor machines who say Y here should also say
2739 Y to "Enhanced Real Time Clock Support", below.
2741 See also the SMP-HOWTO available at
2742 <http://www.tldp.org/docs.html#howto>.
2744 If you don't know what to do here, say N.
2747 bool "Support for hot-pluggable CPUs"
2748 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2750 Say Y here to allow turning CPUs off and on. CPUs can be
2751 controlled through /sys/devices/system/cpu.
2752 (Note: power management support will enable this option
2753 automatically on SMP systems. )
2754 Say N if you want to disable CPU hotplug.
2759 config SYS_SUPPORTS_MIPS_CMP
2762 config SYS_SUPPORTS_MIPS_CPS
2765 config SYS_SUPPORTS_SMP
2768 config NR_CPUS_DEFAULT_4
2771 config NR_CPUS_DEFAULT_8
2774 config NR_CPUS_DEFAULT_16
2777 config NR_CPUS_DEFAULT_32
2780 config NR_CPUS_DEFAULT_64
2784 int "Maximum number of CPUs (2-256)"
2787 default "4" if NR_CPUS_DEFAULT_4
2788 default "8" if NR_CPUS_DEFAULT_8
2789 default "16" if NR_CPUS_DEFAULT_16
2790 default "32" if NR_CPUS_DEFAULT_32
2791 default "64" if NR_CPUS_DEFAULT_64
2793 This allows you to specify the maximum number of CPUs which this
2794 kernel will support. The maximum supported value is 32 for 32-bit
2795 kernel and 64 for 64-bit kernels; the minimum value which makes
2796 sense is 1 for Qemu (useful only for kernel debugging purposes)
2797 and 2 for all others.
2799 This is purely to save memory - each supported CPU adds
2800 approximately eight kilobytes to the kernel image. For best
2801 performance should round up your number of processors to the next
2804 config MIPS_PERF_SHARED_TC_COUNTERS
2807 config MIPS_NR_CPU_NR_MAP_1024
2810 config MIPS_NR_CPU_NR_MAP
2813 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2814 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2817 # Timer Interrupt Frequency Configuration
2821 prompt "Timer frequency"
2824 Allows the configuration of the timer frequency.
2827 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2830 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2833 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2836 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2839 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2842 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2845 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2848 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2852 config SYS_SUPPORTS_24HZ
2855 config SYS_SUPPORTS_48HZ
2858 config SYS_SUPPORTS_100HZ
2861 config SYS_SUPPORTS_128HZ
2864 config SYS_SUPPORTS_250HZ
2867 config SYS_SUPPORTS_256HZ
2870 config SYS_SUPPORTS_1000HZ
2873 config SYS_SUPPORTS_1024HZ
2876 config SYS_SUPPORTS_ARBIT_HZ
2878 default y if !SYS_SUPPORTS_24HZ && \
2879 !SYS_SUPPORTS_48HZ && \
2880 !SYS_SUPPORTS_100HZ && \
2881 !SYS_SUPPORTS_128HZ && \
2882 !SYS_SUPPORTS_250HZ && \
2883 !SYS_SUPPORTS_256HZ && \
2884 !SYS_SUPPORTS_1000HZ && \
2885 !SYS_SUPPORTS_1024HZ
2891 default 100 if HZ_100
2892 default 128 if HZ_128
2893 default 250 if HZ_250
2894 default 256 if HZ_256
2895 default 1000 if HZ_1000
2896 default 1024 if HZ_1024
2899 def_bool HIGH_RES_TIMERS
2902 bool "Kexec system call"
2905 kexec is a system call that implements the ability to shutdown your
2906 current kernel, and to start another kernel. It is like a reboot
2907 but it is independent of the system firmware. And like a reboot
2908 you can start any kernel with it, not just Linux.
2910 The name comes from the similarity to the exec system call.
2912 It is an ongoing process to be certain the hardware in a machine
2913 is properly shutdown, so do not be surprised if this code does not
2914 initially work for you. As of this writing the exact hardware
2915 interface is strongly in flux, so no good recommendation can be
2919 bool "Kernel crash dumps"
2921 Generate crash dump after being started by kexec.
2922 This should be normally only set in special crash dump kernels
2923 which are loaded in the main kernel with kexec-tools into
2924 a specially reserved region and then later executed after
2925 a crash by kdump/kexec. The crash dump kernel must be compiled
2926 to a memory address not used by the main kernel or firmware using
2929 config PHYSICAL_START
2930 hex "Physical address where the kernel is loaded"
2931 default "0xffffffff84000000"
2932 depends on CRASH_DUMP
2934 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2935 If you plan to use kernel for capturing the crash dump change
2936 this value to start of the reserved region (the "X" value as
2937 specified in the "crashkernel=YM@XM" command line boot parameter
2938 passed to the panic-ed kernel).
2941 bool "Enable seccomp to safely compute untrusted bytecode"
2945 This kernel feature is useful for number crunching applications
2946 that may need to compute untrusted bytecode during their
2947 execution. By using pipes or other transports made available to
2948 the process as file descriptors supporting the read/write
2949 syscalls, it's possible to isolate those applications in
2950 their own address space using seccomp. Once seccomp is
2951 enabled via /proc/<pid>/seccomp, it cannot be disabled
2952 and the task is only allowed to execute a few safe syscalls
2953 defined by each seccomp mode.
2955 If unsure, say Y. Only embedded should say N here.
2957 config MIPS_O32_FP64_SUPPORT
2958 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
2959 depends on 32BIT || MIPS32_O32
2961 When this is enabled, the kernel will support use of 64-bit floating
2962 point registers with binaries using the O32 ABI along with the
2963 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2964 32-bit MIPS systems this support is at the cost of increasing the
2965 size and complexity of the compiled FPU emulator. Thus if you are
2966 running a MIPS32 system and know that none of your userland binaries
2967 will require 64-bit floating point, you may wish to reduce the size
2968 of your kernel & potentially improve FP emulation performance by
2971 Although binutils currently supports use of this flag the details
2972 concerning its effect upon the O32 ABI in userland are still being
2973 worked on. In order to avoid userland becoming dependant upon current
2974 behaviour before the details have been finalised, this option should
2975 be considered experimental and only enabled by those working upon
2983 select OF_EARLY_FLATTREE
2993 prompt "Kernel appended dtb support" if USE_OF
2994 default MIPS_NO_APPENDED_DTB
2996 config MIPS_NO_APPENDED_DTB
2999 Do not enable appended dtb support.
3001 config MIPS_ELF_APPENDED_DTB
3004 With this option, the boot code will look for a device tree binary
3005 DTB) included in the vmlinux ELF section .appended_dtb. By default
3006 it is empty and the DTB can be appended using binutils command
3009 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
3011 This is meant as a backward compatiblity convenience for those
3012 systems with a bootloader that can't be upgraded to accommodate
3013 the documented boot protocol using a device tree.
3015 config MIPS_RAW_APPENDED_DTB
3016 bool "vmlinux.bin or vmlinuz.bin"
3018 With this option, the boot code will look for a device tree binary
3019 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
3020 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
3022 This is meant as a backward compatibility convenience for those
3023 systems with a bootloader that can't be upgraded to accommodate
3024 the documented boot protocol using a device tree.
3026 Beware that there is very little in terms of protection against
3027 this option being confused by leftover garbage in memory that might
3028 look like a DTB header after a reboot if no actual DTB is appended
3029 to vmlinux.bin. Do not leave this option active in a production kernel
3030 if you don't intend to always append a DTB.
3034 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
3035 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
3038 default MIPS_CMDLINE_FROM_BOOTLOADER
3040 config MIPS_CMDLINE_FROM_DTB
3042 bool "Dtb kernel arguments if available"
3044 config MIPS_CMDLINE_DTB_EXTEND
3046 bool "Extend dtb kernel arguments with bootloader arguments"
3048 config MIPS_CMDLINE_FROM_BOOTLOADER
3049 bool "Bootloader kernel arguments if available"
3051 config MIPS_CMDLINE_BUILTIN_EXTEND
3052 depends on CMDLINE_BOOL
3053 bool "Extend builtin kernel arguments with bootloader arguments"
3058 config LOCKDEP_SUPPORT
3062 config STACKTRACE_SUPPORT
3066 config HAVE_LATENCYTOP_SUPPORT
3070 config PGTABLE_LEVELS
3072 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3073 default 3 if 64BIT && !PAGE_SIZE_64KB
3076 config MIPS_AUTO_PFN_OFFSET
3079 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3081 config PCI_DRIVERS_GENERIC
3082 select PCI_DOMAINS_GENERIC if PCI
3085 config PCI_DRIVERS_LEGACY
3086 def_bool !PCI_DRIVERS_GENERIC
3087 select NO_GENERIC_PCI_IOPORT_MAP
3088 select PCI_DOMAINS if PCI
3091 # ISA support is now enabled via select. Too many systems still have the one
3092 # or other ISA chip on the board that users don't know about so don't expect
3093 # users to choose the right thing ...
3099 bool "TURBOchannel support"
3100 depends on MACH_DECSTATION
3102 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3103 processors. TURBOchannel programming specifications are available
3105 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3107 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3108 Linux driver support status is documented at:
3109 <http://www.linux-mips.org/wiki/DECstation>
3115 config ARCH_MMAP_RND_BITS_MIN
3119 config ARCH_MMAP_RND_BITS_MAX
3123 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3126 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3133 select MIPS_EXTERNAL_TIMER
3146 config MIPS32_COMPAT
3152 config SYSVIPC_COMPAT
3156 bool "Kernel support for o32 binaries"
3158 select ARCH_WANT_OLD_COMPAT_IPC
3160 select MIPS32_COMPAT
3161 select SYSVIPC_COMPAT if SYSVIPC
3163 Select this option if you want to run o32 binaries. These are pure
3164 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3165 existing binaries are in this format.
3170 bool "Kernel support for n32 binaries"
3172 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3174 select MIPS32_COMPAT
3175 select SYSVIPC_COMPAT if SYSVIPC
3177 Select this option if you want to run n32 binaries. These are
3178 64-bit binaries using 32-bit quantities for addressing and certain
3179 data that would normally be 64-bit. They are used in special
3186 default y if MIPS32_O32 || MIPS32_N32
3189 menu "Power management options"
3191 config ARCH_HIBERNATION_POSSIBLE
3193 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3195 config ARCH_SUSPEND_POSSIBLE
3197 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3199 source "kernel/power/Kconfig"
3203 config MIPS_EXTERNAL_TIMER
3206 menu "CPU Power Management"
3208 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3209 source "drivers/cpufreq/Kconfig"
3212 source "drivers/cpuidle/Kconfig"
3216 source "drivers/firmware/Kconfig"
3218 source "arch/mips/kvm/Kconfig"