1 # SPDX-License-Identifier: GPL-2.0
5 select ARCH_BINFMT_ELF_STATE if MIPS_FP_SUPPORT
6 select ARCH_CLOCKSOURCE_DATA
7 select ARCH_DISCARD_MEMBLOCK
8 select ARCH_HAS_ELF_RANDOMIZE
9 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
10 select ARCH_HAS_UBSAN_SANITIZE_ALL
11 select ARCH_SUPPORTS_UPROBES
12 select ARCH_USE_BUILTIN_BSWAP
13 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
14 select ARCH_USE_QUEUED_RWLOCKS
15 select ARCH_USE_QUEUED_SPINLOCKS
16 select ARCH_WANT_IPC_PARSE_VERSION
17 select BUILDTIME_EXTABLE_SORT
18 select CLONE_BACKWARDS
19 select CPU_NO_EFFICIENT_FFS if (TARGET_ISA_REV < 1)
20 select CPU_PM if CPU_IDLE
21 select GENERIC_ATOMIC64 if !64BIT
22 select GENERIC_CLOCKEVENTS
23 select GENERIC_CMOS_UPDATE
24 select GENERIC_CPU_AUTOPROBE
26 select GENERIC_IRQ_PROBE
27 select GENERIC_IRQ_SHOW
28 select GENERIC_LIB_ASHLDI3
29 select GENERIC_LIB_ASHRDI3
30 select GENERIC_LIB_CMPDI2
31 select GENERIC_LIB_LSHRDI3
32 select GENERIC_LIB_UCMPDI2
33 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
34 select GENERIC_SMP_IDLE_THREAD
35 select GENERIC_TIME_VSYSCALL
36 select HANDLE_DOMAIN_IRQ
37 select HAVE_ARCH_COMPILER_H
38 select HAVE_ARCH_JUMP_LABEL
40 select HAVE_ARCH_MMAP_RND_BITS if MMU
41 select HAVE_ARCH_MMAP_RND_COMPAT_BITS if MMU && COMPAT
42 select HAVE_ARCH_SECCOMP_FILTER
43 select HAVE_ARCH_TRACEHOOK
44 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
45 select HAVE_CBPF_JIT if (!64BIT && !CPU_MICROMIPS)
46 select HAVE_EBPF_JIT if (64BIT && !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
58 select HAVE_GENERIC_DMA_COHERENT
60 select HAVE_IOREMAP_PROT
61 select HAVE_IRQ_EXIT_ON_IRQ_STACK
62 select HAVE_IRQ_TIME_ACCOUNTING
64 select HAVE_KRETPROBES
65 select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
66 select HAVE_MEMBLOCK_NODE_MAP
67 select HAVE_MOD_ARCH_SPECIFIC
70 select HAVE_PERF_EVENTS
71 select HAVE_REGS_AND_STACK_ACCESS_API
73 select HAVE_STACKPROTECTOR
74 select HAVE_SYSCALL_TRACEPOINTS
75 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
76 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
208 select SYS_HAS_CPU_MIPS32_R2
209 select SYS_HAS_EARLY_PRINTK
210 select SYS_SUPPORTS_32BIT_KERNEL
211 select SYS_SUPPORTS_BIG_ENDIAN
212 select SYS_SUPPORTS_MIPS16
213 select SYS_SUPPORTS_ZBOOT_UART_PROM
215 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
217 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
220 bool "Broadcom Generic BMIPS kernel"
221 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
222 select ARCH_HAS_PHYS_TO_DMA
224 select NO_EXCEPT_FILL
230 select BCM6345_L1_IRQ
231 select BCM7038_L1_IRQ
232 select BCM7120_L2_IRQ
233 select BRCMSTB_L2_IRQ
235 select DMA_NONCOHERENT
236 select SYS_SUPPORTS_32BIT_KERNEL
237 select SYS_SUPPORTS_LITTLE_ENDIAN
238 select SYS_SUPPORTS_BIG_ENDIAN
239 select SYS_SUPPORTS_HIGHMEM
240 select SYS_HAS_CPU_BMIPS32_3300
241 select SYS_HAS_CPU_BMIPS4350
242 select SYS_HAS_CPU_BMIPS4380
243 select SYS_HAS_CPU_BMIPS5000
245 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
246 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
247 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
248 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
249 select HARDIRQS_SW_RESEND
251 Build a generic DT-based kernel image that boots on select
252 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
253 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
254 must be set appropriately for your board.
257 bool "Broadcom BCM47XX based boards"
261 select DMA_NONCOHERENT
264 select SYS_HAS_CPU_MIPS32_R1
265 select NO_EXCEPT_FILL
266 select SYS_SUPPORTS_32BIT_KERNEL
267 select SYS_SUPPORTS_LITTLE_ENDIAN
268 select SYS_SUPPORTS_MIPS16
269 select SYS_SUPPORTS_ZBOOT
270 select SYS_HAS_EARLY_PRINTK
271 select USE_GENERIC_EARLY_PRINTK_8250
273 select LEDS_GPIO_REGISTER
276 select BCM47XX_SSB if !BCM47XX_BCMA
278 Support for BCM47XX based boards
281 bool "Broadcom BCM63XX based boards"
286 select DMA_NONCOHERENT
288 select SYS_SUPPORTS_32BIT_KERNEL
289 select SYS_SUPPORTS_BIG_ENDIAN
290 select SYS_HAS_EARLY_PRINTK
294 select MIPS_L1_CACHE_SHIFT_4
297 Support for BCM63XX based boards
304 select DMA_NONCOHERENT
310 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
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
678 select NR_CPUS_DEFAULT_64
679 select SYS_HAS_CPU_R10000
680 select SYS_SUPPORTS_64BIT_KERNEL
681 select SYS_SUPPORTS_BIG_ENDIAN
682 select SYS_SUPPORTS_NUMA
683 select SYS_SUPPORTS_SMP
684 select MIPS_L1_CACHE_SHIFT_7
686 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
687 workstations. To compile a Linux kernel that runs on these, say Y
691 bool "SGI IP28 (Indigo2 R10k)"
694 select ARCH_MIGHT_HAVE_PC_SERIO
698 select DEFAULT_SGI_PARTITION
699 select DMA_NONCOHERENT
700 select GENERIC_ISA_DMA_SUPPORT_BROKEN
706 select SGI_HAS_INDYDOG
712 select SYS_HAS_CPU_R10000
714 # Disable EARLY_PRINTK for now since it leads to overwritten prom
715 # memory during early boot on some machines.
717 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
718 # for a more details discussion
720 # select SYS_HAS_EARLY_PRINTK
721 select SYS_SUPPORTS_64BIT_KERNEL
722 select SYS_SUPPORTS_BIG_ENDIAN
723 select MIPS_L1_CACHE_SHIFT_7
725 This is the SGI Indigo2 with R10000 processor. To compile a Linux
726 kernel that runs on these, say Y here.
730 select ARCH_HAS_PHYS_TO_DMA
736 select DMA_NONCOHERENT
739 select R5000_CPU_SCACHE
740 select RM7000_CPU_SCACHE
741 select SYS_HAS_CPU_R5000
742 select SYS_HAS_CPU_R10000 if BROKEN
743 select SYS_HAS_CPU_RM7000
744 select SYS_HAS_CPU_NEVADA
745 select SYS_SUPPORTS_64BIT_KERNEL
746 select SYS_SUPPORTS_BIG_ENDIAN
748 If you want this kernel to run on SGI O2 workstation, say Y here.
751 bool "Sibyte BCM91120C-CRhine"
753 select SIBYTE_BCM1120
755 select SYS_HAS_CPU_SB1
756 select SYS_SUPPORTS_BIG_ENDIAN
757 select SYS_SUPPORTS_LITTLE_ENDIAN
760 bool "Sibyte BCM91120x-Carmel"
762 select SIBYTE_BCM1120
764 select SYS_HAS_CPU_SB1
765 select SYS_SUPPORTS_BIG_ENDIAN
766 select SYS_SUPPORTS_LITTLE_ENDIAN
769 bool "Sibyte BCM91125C-CRhone"
771 select SIBYTE_BCM1125
773 select SYS_HAS_CPU_SB1
774 select SYS_SUPPORTS_BIG_ENDIAN
775 select SYS_SUPPORTS_HIGHMEM
776 select SYS_SUPPORTS_LITTLE_ENDIAN
779 bool "Sibyte BCM91125E-Rhone"
781 select SIBYTE_BCM1125H
783 select SYS_HAS_CPU_SB1
784 select SYS_SUPPORTS_BIG_ENDIAN
785 select SYS_SUPPORTS_LITTLE_ENDIAN
788 bool "Sibyte BCM91250A-SWARM"
790 select HAVE_PATA_PLATFORM
793 select SYS_HAS_CPU_SB1
794 select SYS_SUPPORTS_BIG_ENDIAN
795 select SYS_SUPPORTS_HIGHMEM
796 select SYS_SUPPORTS_LITTLE_ENDIAN
797 select ZONE_DMA32 if 64BIT
798 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
800 config SIBYTE_LITTLESUR
801 bool "Sibyte BCM91250C2-LittleSur"
803 select HAVE_PATA_PLATFORM
806 select SYS_HAS_CPU_SB1
807 select SYS_SUPPORTS_BIG_ENDIAN
808 select SYS_SUPPORTS_HIGHMEM
809 select SYS_SUPPORTS_LITTLE_ENDIAN
810 select ZONE_DMA32 if 64BIT
812 config SIBYTE_SENTOSA
813 bool "Sibyte BCM91250E-Sentosa"
817 select SYS_HAS_CPU_SB1
818 select SYS_SUPPORTS_BIG_ENDIAN
819 select SYS_SUPPORTS_LITTLE_ENDIAN
820 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
823 bool "Sibyte BCM91480B-BigSur"
825 select NR_CPUS_DEFAULT_4
826 select SIBYTE_BCM1x80
828 select SYS_HAS_CPU_SB1
829 select SYS_SUPPORTS_BIG_ENDIAN
830 select SYS_SUPPORTS_HIGHMEM
831 select SYS_SUPPORTS_LITTLE_ENDIAN
832 select ZONE_DMA32 if 64BIT
833 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
836 bool "SNI RM200/300/400"
837 select FW_ARC if CPU_LITTLE_ENDIAN
838 select FW_ARC32 if CPU_LITTLE_ENDIAN
839 select FW_SNIPROM if CPU_BIG_ENDIAN
840 select ARCH_MAY_HAVE_PC_FDC
841 select ARCH_MIGHT_HAVE_PC_PARPORT
842 select ARCH_MIGHT_HAVE_PC_SERIO
846 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
847 select DMA_NONCOHERENT
848 select GENERIC_ISA_DMA
849 select HAVE_PCSPKR_PLATFORM
856 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
857 select SYS_HAS_CPU_R4X00
858 select SYS_HAS_CPU_R5000
859 select SYS_HAS_CPU_R10000
860 select R5000_CPU_SCACHE
861 select SYS_HAS_EARLY_PRINTK
862 select SYS_SUPPORTS_32BIT_KERNEL
863 select SYS_SUPPORTS_64BIT_KERNEL
864 select SYS_SUPPORTS_BIG_ENDIAN
865 select SYS_SUPPORTS_HIGHMEM
866 select SYS_SUPPORTS_LITTLE_ENDIAN
868 The SNI RM200/300/400 are MIPS-based machines manufactured by
869 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
870 Technology and now in turn merged with Fujitsu. Say Y here to
871 support this machine type.
874 bool "Toshiba TX39 series based machines"
877 bool "Toshiba TX49 series based machines"
879 config MIKROTIK_RB532
880 bool "Mikrotik RB532 boards"
883 select DMA_NONCOHERENT
886 select SYS_HAS_CPU_MIPS32_R1
887 select SYS_SUPPORTS_32BIT_KERNEL
888 select SYS_SUPPORTS_LITTLE_ENDIAN
892 select MIPS_L1_CACHE_SHIFT_4
894 Support the Mikrotik(tm) RouterBoard 532 series,
895 based on the IDT RC32434 SoC.
897 config CAVIUM_OCTEON_SOC
898 bool "Cavium Networks Octeon SoC based boards"
900 select ARCH_HAS_PHYS_TO_DMA
902 select PHYS_ADDR_T_64BIT
903 select SYS_SUPPORTS_64BIT_KERNEL
904 select SYS_SUPPORTS_BIG_ENDIAN
906 select EDAC_ATOMIC_SCRUB
907 select SYS_SUPPORTS_LITTLE_ENDIAN
908 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
909 select SYS_HAS_EARLY_PRINTK
910 select SYS_HAS_CPU_CAVIUM_OCTEON
917 select ARCH_SPARSEMEM_ENABLE
918 select SYS_SUPPORTS_SMP
919 select NR_CPUS_DEFAULT_64
920 select MIPS_NR_CPU_NR_MAP_1024
922 select MTD_COMPLEX_MAPPINGS
924 select SYS_SUPPORTS_RELOCATABLE
926 This option supports all of the Octeon reference boards from Cavium
927 Networks. It builds a kernel that dynamically determines the Octeon
928 CPU type and supports all known board reference implementations.
929 Some of the supported boards are:
936 Say Y here for most Octeon reference boards.
939 bool "Netlogic XLR/XLS based systems"
942 select SYS_HAS_CPU_XLR
943 select SYS_SUPPORTS_SMP
946 select SYS_SUPPORTS_32BIT_KERNEL
947 select SYS_SUPPORTS_64BIT_KERNEL
948 select PHYS_ADDR_T_64BIT
949 select SYS_SUPPORTS_BIG_ENDIAN
950 select SYS_SUPPORTS_HIGHMEM
951 select NR_CPUS_DEFAULT_32
955 select ZONE_DMA32 if 64BIT
957 select SYS_HAS_EARLY_PRINTK
958 select SYS_SUPPORTS_ZBOOT
959 select SYS_SUPPORTS_ZBOOT_UART16550
961 Support for systems based on Netlogic XLR and XLS processors.
962 Say Y here if you have a XLR or XLS based board.
965 bool "Netlogic XLP based systems"
968 select SYS_HAS_CPU_XLP
969 select SYS_SUPPORTS_SMP
971 select SYS_SUPPORTS_32BIT_KERNEL
972 select SYS_SUPPORTS_64BIT_KERNEL
973 select PHYS_ADDR_T_64BIT
975 select SYS_SUPPORTS_BIG_ENDIAN
976 select SYS_SUPPORTS_LITTLE_ENDIAN
977 select SYS_SUPPORTS_HIGHMEM
978 select NR_CPUS_DEFAULT_32
982 select ZONE_DMA32 if 64BIT
984 select SYS_HAS_EARLY_PRINTK
986 select SYS_SUPPORTS_ZBOOT
987 select SYS_SUPPORTS_ZBOOT_UART16550
989 This board is based on Netlogic XLP Processor.
990 Say Y here if you have a XLP based board.
993 bool "Para-Virtualized guest system"
996 select SYS_SUPPORTS_64BIT_KERNEL
997 select SYS_SUPPORTS_32BIT_KERNEL
998 select SYS_SUPPORTS_BIG_ENDIAN
999 select SYS_SUPPORTS_SMP
1000 select NR_CPUS_DEFAULT_4
1001 select SYS_HAS_EARLY_PRINTK
1002 select SYS_HAS_CPU_MIPS32_R2
1003 select SYS_HAS_CPU_MIPS64_R2
1004 select SYS_HAS_CPU_CAVIUM_OCTEON
1006 select SWAP_IO_SPACE
1008 This option supports guest running under ????
1012 source "arch/mips/alchemy/Kconfig"
1013 source "arch/mips/ath25/Kconfig"
1014 source "arch/mips/ath79/Kconfig"
1015 source "arch/mips/bcm47xx/Kconfig"
1016 source "arch/mips/bcm63xx/Kconfig"
1017 source "arch/mips/bmips/Kconfig"
1018 source "arch/mips/generic/Kconfig"
1019 source "arch/mips/jazz/Kconfig"
1020 source "arch/mips/jz4740/Kconfig"
1021 source "arch/mips/lantiq/Kconfig"
1022 source "arch/mips/lasat/Kconfig"
1023 source "arch/mips/pic32/Kconfig"
1024 source "arch/mips/pistachio/Kconfig"
1025 source "arch/mips/pmcs-msp71xx/Kconfig"
1026 source "arch/mips/ralink/Kconfig"
1027 source "arch/mips/sgi-ip27/Kconfig"
1028 source "arch/mips/sibyte/Kconfig"
1029 source "arch/mips/txx9/Kconfig"
1030 source "arch/mips/vr41xx/Kconfig"
1031 source "arch/mips/cavium-octeon/Kconfig"
1032 source "arch/mips/loongson32/Kconfig"
1033 source "arch/mips/loongson64/Kconfig"
1034 source "arch/mips/netlogic/Kconfig"
1035 source "arch/mips/paravirt/Kconfig"
1039 config RWSEM_GENERIC_SPINLOCK
1043 config RWSEM_XCHGADD_ALGORITHM
1046 config GENERIC_HWEIGHT
1050 config GENERIC_CALIBRATE_DELAY
1054 config SCHED_OMIT_FRAME_POINTER
1059 # Select some configuration options automatically based on user selections.
1064 config ARCH_MAY_HAVE_PC_FDC
1100 config MIPS_CLOCK_VSYSCALL
1101 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1110 config ARCH_SUPPORTS_UPROBES
1113 config DMA_MAYBE_COHERENT
1114 select ARCH_HAS_DMA_COHERENCE_H
1115 select DMA_NONCOHERENT
1118 config DMA_PERDEV_COHERENT
1120 select DMA_NONCOHERENT
1122 config DMA_NONCOHERENT
1124 select ARCH_HAS_DMA_MMAP_PGPROT
1125 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1126 select ARCH_HAS_SYNC_DMA_FOR_CPU
1127 select NEED_DMA_MAP_STATE
1128 select ARCH_HAS_DMA_COHERENT_TO_PFN
1129 select DMA_NONCOHERENT_CACHE_SYNC
1131 config SYS_HAS_EARLY_PRINTK
1134 config SYS_SUPPORTS_HOTPLUG_CPU
1137 config MIPS_BONITO64
1152 config NO_IOPORT_MAP
1157 default y if !CPU_HAS_LOAD_STORE_LR
1159 config GENERIC_ISA_DMA
1161 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1164 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1166 select GENERIC_ISA_DMA
1171 config HOLES_IN_ZONE
1174 config SYS_SUPPORTS_RELOCATABLE
1177 Selected if the platform supports relocating the kernel.
1178 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1179 to allow access to command line and entropy sources.
1181 config MIPS_CBPF_JIT
1183 depends on BPF_JIT && HAVE_CBPF_JIT
1185 config MIPS_EBPF_JIT
1187 depends on BPF_JIT && HAVE_EBPF_JIT
1191 # Endianness selection. Sufficiently obscure so many users don't know what to
1192 # answer,so we try hard to limit the available choices. Also the use of a
1193 # choice statement should be more obvious to the user.
1196 prompt "Endianness selection"
1198 Some MIPS machines can be configured for either little or big endian
1199 byte order. These modes require different kernels and a different
1200 Linux distribution. In general there is one preferred byteorder for a
1201 particular system but some systems are just as commonly used in the
1202 one or the other endianness.
1204 config CPU_BIG_ENDIAN
1206 depends on SYS_SUPPORTS_BIG_ENDIAN
1208 config CPU_LITTLE_ENDIAN
1209 bool "Little endian"
1210 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1217 config SYS_SUPPORTS_APM_EMULATION
1220 config SYS_SUPPORTS_BIG_ENDIAN
1223 config SYS_SUPPORTS_LITTLE_ENDIAN
1226 config SYS_SUPPORTS_HUGETLBFS
1228 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1231 config MIPS_HUGE_TLB_SUPPORT
1232 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1249 config PCI_GT64XXX_PCI0
1252 config NO_EXCEPT_FILL
1259 select DMA_NONCOHERENT
1261 select SWAP_IO_SPACE
1262 select SYS_HAS_CPU_R5500
1263 select SYS_SUPPORTS_32BIT_KERNEL
1264 select SYS_SUPPORTS_64BIT_KERNEL
1265 select SYS_SUPPORTS_BIG_ENDIAN
1272 select DMA_NONCOHERENT
1273 select SYS_HAS_CPU_MIPS32_R2
1274 select SYS_SUPPORTS_32BIT_KERNEL
1275 select SYS_SUPPORTS_LITTLE_ENDIAN
1276 select SYS_SUPPORTS_BIG_ENDIAN
1277 select SYS_SUPPORTS_MIPS16
1278 select CPU_MIPSR2_IRQ_VI
1287 config SWAP_IO_SPACE
1290 config SGI_HAS_INDYDOG
1302 config SGI_HAS_ZILOG
1305 config SGI_HAS_I8042
1308 config DEFAULT_SGI_PARTITION
1320 config MIPS_L1_CACHE_SHIFT_4
1323 config MIPS_L1_CACHE_SHIFT_5
1326 config MIPS_L1_CACHE_SHIFT_6
1329 config MIPS_L1_CACHE_SHIFT_7
1332 config MIPS_L1_CACHE_SHIFT
1334 default "7" if MIPS_L1_CACHE_SHIFT_7
1335 default "6" if MIPS_L1_CACHE_SHIFT_6
1336 default "5" if MIPS_L1_CACHE_SHIFT_5
1337 default "4" if MIPS_L1_CACHE_SHIFT_4
1340 config HAVE_STD_PC_SERIAL_PORT
1344 bool "ARC console support"
1345 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1349 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1354 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1363 menu "CPU selection"
1369 config CPU_LOONGSON3
1370 bool "Loongson 3 CPU"
1371 depends on SYS_HAS_CPU_LOONGSON3
1372 select ARCH_HAS_PHYS_TO_DMA
1373 select CPU_SUPPORTS_64BIT_KERNEL
1374 select CPU_SUPPORTS_HIGHMEM
1375 select CPU_SUPPORTS_HUGEPAGES
1376 select CPU_HAS_LOAD_STORE_LR
1377 select WEAK_ORDERING
1378 select WEAK_REORDERING_BEYOND_LLSC
1379 select MIPS_PGD_C0_CONTEXT
1380 select MIPS_L1_CACHE_SHIFT_6
1384 The Loongson 3 processor implements the MIPS64R2 instruction
1385 set with many extensions.
1387 config LOONGSON3_ENHANCEMENT
1388 bool "New Loongson 3 CPU Enhancements"
1391 select CPU_HAS_PREFETCH
1392 depends on CPU_LOONGSON3
1394 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1395 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1396 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1397 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1398 Fast TLB refill support, etc.
1400 This option enable those enhancements which are not probed at run
1401 time. If you want a generic kernel to run on all Loongson 3 machines,
1402 please say 'N' here. If you want a high-performance kernel to run on
1403 new Loongson 3 machines only, please say 'Y' here.
1405 config CPU_LOONGSON2E
1407 depends on SYS_HAS_CPU_LOONGSON2E
1408 select CPU_LOONGSON2
1410 The Loongson 2E processor implements the MIPS III instruction set
1411 with many extensions.
1413 It has an internal FPGA northbridge, which is compatible to
1416 config CPU_LOONGSON2F
1418 depends on SYS_HAS_CPU_LOONGSON2F
1419 select CPU_LOONGSON2
1422 The Loongson 2F processor implements the MIPS III instruction set
1423 with many extensions.
1425 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1426 have a similar programming interface with FPGA northbridge used in
1429 config CPU_LOONGSON1B
1431 depends on SYS_HAS_CPU_LOONGSON1B
1432 select CPU_LOONGSON1
1433 select LEDS_GPIO_REGISTER
1435 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1436 Release 1 instruction set and part of the MIPS32 Release 2
1439 config CPU_LOONGSON1C
1441 depends on SYS_HAS_CPU_LOONGSON1C
1442 select CPU_LOONGSON1
1443 select LEDS_GPIO_REGISTER
1445 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1446 Release 1 instruction set and part of the MIPS32 Release 2
1449 config CPU_MIPS32_R1
1450 bool "MIPS32 Release 1"
1451 depends on SYS_HAS_CPU_MIPS32_R1
1452 select CPU_HAS_PREFETCH
1453 select CPU_HAS_LOAD_STORE_LR
1454 select CPU_SUPPORTS_32BIT_KERNEL
1455 select CPU_SUPPORTS_HIGHMEM
1457 Choose this option to build a kernel for release 1 or later of the
1458 MIPS32 architecture. Most modern embedded systems with a 32-bit
1459 MIPS processor are based on a MIPS32 processor. If you know the
1460 specific type of processor in your system, choose those that one
1461 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1462 Release 2 of the MIPS32 architecture is available since several
1463 years so chances are you even have a MIPS32 Release 2 processor
1464 in which case you should choose CPU_MIPS32_R2 instead for better
1467 config CPU_MIPS32_R2
1468 bool "MIPS32 Release 2"
1469 depends on SYS_HAS_CPU_MIPS32_R2
1470 select CPU_HAS_PREFETCH
1471 select CPU_HAS_LOAD_STORE_LR
1472 select CPU_SUPPORTS_32BIT_KERNEL
1473 select CPU_SUPPORTS_HIGHMEM
1474 select CPU_SUPPORTS_MSA
1477 Choose this option to build a kernel for release 2 or later of the
1478 MIPS32 architecture. Most modern embedded systems with a 32-bit
1479 MIPS processor are based on a MIPS32 processor. If you know the
1480 specific type of processor in your system, choose those that one
1481 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1483 config CPU_MIPS32_R6
1484 bool "MIPS32 Release 6"
1485 depends on SYS_HAS_CPU_MIPS32_R6
1486 select CPU_HAS_PREFETCH
1487 select CPU_SUPPORTS_32BIT_KERNEL
1488 select CPU_SUPPORTS_HIGHMEM
1489 select CPU_SUPPORTS_MSA
1491 select MIPS_O32_FP64_SUPPORT
1493 Choose this option to build a kernel for release 6 or later of the
1494 MIPS32 architecture. New MIPS processors, starting with the Warrior
1495 family, are based on a MIPS32r6 processor. If you own an older
1496 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1498 config CPU_MIPS64_R1
1499 bool "MIPS64 Release 1"
1500 depends on SYS_HAS_CPU_MIPS64_R1
1501 select CPU_HAS_PREFETCH
1502 select CPU_HAS_LOAD_STORE_LR
1503 select CPU_SUPPORTS_32BIT_KERNEL
1504 select CPU_SUPPORTS_64BIT_KERNEL
1505 select CPU_SUPPORTS_HIGHMEM
1506 select CPU_SUPPORTS_HUGEPAGES
1508 Choose this option to build a kernel for release 1 or later of the
1509 MIPS64 architecture. Many modern embedded systems with a 64-bit
1510 MIPS processor are based on a MIPS64 processor. If you know the
1511 specific type of processor in your system, choose those that one
1512 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1513 Release 2 of the MIPS64 architecture is available since several
1514 years so chances are you even have a MIPS64 Release 2 processor
1515 in which case you should choose CPU_MIPS64_R2 instead for better
1518 config CPU_MIPS64_R2
1519 bool "MIPS64 Release 2"
1520 depends on SYS_HAS_CPU_MIPS64_R2
1521 select CPU_HAS_PREFETCH
1522 select CPU_HAS_LOAD_STORE_LR
1523 select CPU_SUPPORTS_32BIT_KERNEL
1524 select CPU_SUPPORTS_64BIT_KERNEL
1525 select CPU_SUPPORTS_HIGHMEM
1526 select CPU_SUPPORTS_HUGEPAGES
1527 select CPU_SUPPORTS_MSA
1530 Choose this option to build a kernel for release 2 or later of the
1531 MIPS64 architecture. Many modern embedded systems with a 64-bit
1532 MIPS processor are based on a MIPS64 processor. If you know the
1533 specific type of processor in your system, choose those that one
1534 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1536 config CPU_MIPS64_R6
1537 bool "MIPS64 Release 6"
1538 depends on SYS_HAS_CPU_MIPS64_R6
1539 select CPU_HAS_PREFETCH
1540 select CPU_SUPPORTS_32BIT_KERNEL
1541 select CPU_SUPPORTS_64BIT_KERNEL
1542 select CPU_SUPPORTS_HIGHMEM
1543 select CPU_SUPPORTS_MSA
1544 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1547 Choose this option to build a kernel for release 6 or later of the
1548 MIPS64 architecture. New MIPS processors, starting with the Warrior
1549 family, are based on a MIPS64r6 processor. If you own an older
1550 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1554 depends on SYS_HAS_CPU_R3000
1556 select CPU_HAS_LOAD_STORE_LR
1557 select CPU_SUPPORTS_32BIT_KERNEL
1558 select CPU_SUPPORTS_HIGHMEM
1560 Please make sure to pick the right CPU type. Linux/MIPS is not
1561 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1562 *not* work on R4000 machines and vice versa. However, since most
1563 of the supported machines have an R4000 (or similar) CPU, R4x00
1564 might be a safe bet. If the resulting kernel does not work,
1565 try to recompile with R3000.
1569 depends on SYS_HAS_CPU_TX39XX
1570 select CPU_SUPPORTS_32BIT_KERNEL
1571 select CPU_HAS_LOAD_STORE_LR
1575 depends on SYS_HAS_CPU_VR41XX
1576 select CPU_SUPPORTS_32BIT_KERNEL
1577 select CPU_SUPPORTS_64BIT_KERNEL
1578 select CPU_HAS_LOAD_STORE_LR
1580 The options selects support for the NEC VR4100 series of processors.
1581 Only choose this option if you have one of these processors as a
1582 kernel built with this option will not run on any other type of
1583 processor or vice versa.
1587 depends on SYS_HAS_CPU_R4300
1588 select CPU_SUPPORTS_32BIT_KERNEL
1589 select CPU_SUPPORTS_64BIT_KERNEL
1590 select CPU_HAS_LOAD_STORE_LR
1592 MIPS Technologies R4300-series processors.
1596 depends on SYS_HAS_CPU_R4X00
1597 select CPU_SUPPORTS_32BIT_KERNEL
1598 select CPU_SUPPORTS_64BIT_KERNEL
1599 select CPU_SUPPORTS_HUGEPAGES
1600 select CPU_HAS_LOAD_STORE_LR
1602 MIPS Technologies R4000-series processors other than 4300, including
1603 the R4000, R4400, R4600, and 4700.
1607 depends on SYS_HAS_CPU_TX49XX
1608 select CPU_HAS_PREFETCH
1609 select CPU_HAS_LOAD_STORE_LR
1610 select CPU_SUPPORTS_32BIT_KERNEL
1611 select CPU_SUPPORTS_64BIT_KERNEL
1612 select CPU_SUPPORTS_HUGEPAGES
1616 depends on SYS_HAS_CPU_R5000
1617 select CPU_SUPPORTS_32BIT_KERNEL
1618 select CPU_SUPPORTS_64BIT_KERNEL
1619 select CPU_SUPPORTS_HUGEPAGES
1620 select CPU_HAS_LOAD_STORE_LR
1622 MIPS Technologies R5000-series processors other than the Nevada.
1626 depends on SYS_HAS_CPU_R5432
1627 select CPU_SUPPORTS_32BIT_KERNEL
1628 select CPU_SUPPORTS_64BIT_KERNEL
1629 select CPU_SUPPORTS_HUGEPAGES
1630 select CPU_HAS_LOAD_STORE_LR
1634 depends on SYS_HAS_CPU_R5500
1635 select CPU_SUPPORTS_32BIT_KERNEL
1636 select CPU_SUPPORTS_64BIT_KERNEL
1637 select CPU_SUPPORTS_HUGEPAGES
1638 select CPU_HAS_LOAD_STORE_LR
1640 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1645 depends on SYS_HAS_CPU_NEVADA
1646 select CPU_SUPPORTS_32BIT_KERNEL
1647 select CPU_SUPPORTS_64BIT_KERNEL
1648 select CPU_SUPPORTS_HUGEPAGES
1649 select CPU_HAS_LOAD_STORE_LR
1651 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1655 depends on SYS_HAS_CPU_R8000
1656 select CPU_HAS_PREFETCH
1657 select CPU_HAS_LOAD_STORE_LR
1658 select CPU_SUPPORTS_64BIT_KERNEL
1660 MIPS Technologies R8000 processors. Note these processors are
1661 uncommon and the support for them is incomplete.
1665 depends on SYS_HAS_CPU_R10000
1666 select CPU_HAS_PREFETCH
1667 select CPU_HAS_LOAD_STORE_LR
1668 select CPU_SUPPORTS_32BIT_KERNEL
1669 select CPU_SUPPORTS_64BIT_KERNEL
1670 select CPU_SUPPORTS_HIGHMEM
1671 select CPU_SUPPORTS_HUGEPAGES
1673 MIPS Technologies R10000-series processors.
1677 depends on SYS_HAS_CPU_RM7000
1678 select CPU_HAS_PREFETCH
1679 select CPU_HAS_LOAD_STORE_LR
1680 select CPU_SUPPORTS_32BIT_KERNEL
1681 select CPU_SUPPORTS_64BIT_KERNEL
1682 select CPU_SUPPORTS_HIGHMEM
1683 select CPU_SUPPORTS_HUGEPAGES
1687 depends on SYS_HAS_CPU_SB1
1688 select CPU_HAS_LOAD_STORE_LR
1689 select CPU_SUPPORTS_32BIT_KERNEL
1690 select CPU_SUPPORTS_64BIT_KERNEL
1691 select CPU_SUPPORTS_HIGHMEM
1692 select CPU_SUPPORTS_HUGEPAGES
1693 select WEAK_ORDERING
1695 config CPU_CAVIUM_OCTEON
1696 bool "Cavium Octeon processor"
1697 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1698 select CPU_HAS_PREFETCH
1699 select CPU_HAS_LOAD_STORE_LR
1700 select CPU_SUPPORTS_64BIT_KERNEL
1701 select WEAK_ORDERING
1702 select CPU_SUPPORTS_HIGHMEM
1703 select CPU_SUPPORTS_HUGEPAGES
1704 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1705 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1706 select MIPS_L1_CACHE_SHIFT_7
1709 The Cavium Octeon processor is a highly integrated chip containing
1710 many ethernet hardware widgets for networking tasks. The processor
1711 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1712 Full details can be found at http://www.caviumnetworks.com.
1715 bool "Broadcom BMIPS"
1716 depends on SYS_HAS_CPU_BMIPS
1718 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1719 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1720 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1721 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1722 select CPU_SUPPORTS_32BIT_KERNEL
1723 select DMA_NONCOHERENT
1725 select SWAP_IO_SPACE
1726 select WEAK_ORDERING
1727 select CPU_SUPPORTS_HIGHMEM
1728 select CPU_HAS_PREFETCH
1729 select CPU_HAS_LOAD_STORE_LR
1730 select CPU_SUPPORTS_CPUFREQ
1731 select MIPS_EXTERNAL_TIMER
1733 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1736 bool "Netlogic XLR SoC"
1737 depends on SYS_HAS_CPU_XLR
1738 select CPU_HAS_LOAD_STORE_LR
1739 select CPU_SUPPORTS_32BIT_KERNEL
1740 select CPU_SUPPORTS_64BIT_KERNEL
1741 select CPU_SUPPORTS_HIGHMEM
1742 select CPU_SUPPORTS_HUGEPAGES
1743 select WEAK_ORDERING
1744 select WEAK_REORDERING_BEYOND_LLSC
1746 Netlogic Microsystems XLR/XLS processors.
1749 bool "Netlogic XLP SoC"
1750 depends on SYS_HAS_CPU_XLP
1751 select CPU_SUPPORTS_32BIT_KERNEL
1752 select CPU_SUPPORTS_64BIT_KERNEL
1753 select CPU_SUPPORTS_HIGHMEM
1754 select WEAK_ORDERING
1755 select WEAK_REORDERING_BEYOND_LLSC
1756 select CPU_HAS_PREFETCH
1757 select CPU_HAS_LOAD_STORE_LR
1759 select CPU_SUPPORTS_HUGEPAGES
1760 select MIPS_ASID_BITS_VARIABLE
1762 Netlogic Microsystems XLP processors.
1765 config CPU_MIPS32_3_5_FEATURES
1766 bool "MIPS32 Release 3.5 Features"
1767 depends on SYS_HAS_CPU_MIPS32_R3_5
1768 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1770 Choose this option to build a kernel for release 2 or later of the
1771 MIPS32 architecture including features from the 3.5 release such as
1772 support for Enhanced Virtual Addressing (EVA).
1774 config CPU_MIPS32_3_5_EVA
1775 bool "Enhanced Virtual Addressing (EVA)"
1776 depends on CPU_MIPS32_3_5_FEATURES
1780 Choose this option if you want to enable the Enhanced Virtual
1781 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1782 One of its primary benefits is an increase in the maximum size
1783 of lowmem (up to 3GB). If unsure, say 'N' here.
1785 config CPU_MIPS32_R5_FEATURES
1786 bool "MIPS32 Release 5 Features"
1787 depends on SYS_HAS_CPU_MIPS32_R5
1788 depends on CPU_MIPS32_R2
1790 Choose this option to build a kernel for release 2 or later of the
1791 MIPS32 architecture including features from release 5 such as
1792 support for Extended Physical Addressing (XPA).
1794 config CPU_MIPS32_R5_XPA
1795 bool "Extended Physical Addressing (XPA)"
1796 depends on CPU_MIPS32_R5_FEATURES
1798 depends on !PAGE_SIZE_4KB
1799 depends on SYS_SUPPORTS_HIGHMEM
1802 select PHYS_ADDR_T_64BIT
1805 Choose this option if you want to enable the Extended Physical
1806 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1807 benefit is to increase physical addressing equal to or greater
1808 than 40 bits. Note that this has the side effect of turning on
1809 64-bit addressing which in turn makes the PTEs 64-bit in size.
1810 If unsure, say 'N' here.
1813 config CPU_NOP_WORKAROUNDS
1816 config CPU_JUMP_WORKAROUNDS
1819 config CPU_LOONGSON2F_WORKAROUNDS
1820 bool "Loongson 2F Workarounds"
1822 select CPU_NOP_WORKAROUNDS
1823 select CPU_JUMP_WORKAROUNDS
1825 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1826 require workarounds. Without workarounds the system may hang
1827 unexpectedly. For more information please refer to the gas
1828 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1830 Loongson 2F03 and later have fixed these issues and no workarounds
1831 are needed. The workarounds have no significant side effect on them
1832 but may decrease the performance of the system so this option should
1833 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1836 If unsure, please say Y.
1837 endif # CPU_LOONGSON2F
1839 config SYS_SUPPORTS_ZBOOT
1841 select HAVE_KERNEL_GZIP
1842 select HAVE_KERNEL_BZIP2
1843 select HAVE_KERNEL_LZ4
1844 select HAVE_KERNEL_LZMA
1845 select HAVE_KERNEL_LZO
1846 select HAVE_KERNEL_XZ
1848 config SYS_SUPPORTS_ZBOOT_UART16550
1850 select SYS_SUPPORTS_ZBOOT
1852 config SYS_SUPPORTS_ZBOOT_UART_PROM
1854 select SYS_SUPPORTS_ZBOOT
1856 config CPU_LOONGSON2
1858 select CPU_SUPPORTS_32BIT_KERNEL
1859 select CPU_SUPPORTS_64BIT_KERNEL
1860 select CPU_SUPPORTS_HIGHMEM
1861 select CPU_SUPPORTS_HUGEPAGES
1862 select ARCH_HAS_PHYS_TO_DMA
1863 select CPU_HAS_LOAD_STORE_LR
1865 config CPU_LOONGSON1
1869 select CPU_HAS_PREFETCH
1870 select CPU_HAS_LOAD_STORE_LR
1871 select CPU_SUPPORTS_32BIT_KERNEL
1872 select CPU_SUPPORTS_HIGHMEM
1873 select CPU_SUPPORTS_CPUFREQ
1875 config CPU_BMIPS32_3300
1876 select SMP_UP if SMP
1879 config CPU_BMIPS4350
1881 select SYS_SUPPORTS_SMP
1882 select SYS_SUPPORTS_HOTPLUG_CPU
1884 config CPU_BMIPS4380
1886 select MIPS_L1_CACHE_SHIFT_6
1887 select SYS_SUPPORTS_SMP
1888 select SYS_SUPPORTS_HOTPLUG_CPU
1891 config CPU_BMIPS5000
1893 select MIPS_CPU_SCACHE
1894 select MIPS_L1_CACHE_SHIFT_7
1895 select SYS_SUPPORTS_SMP
1896 select SYS_SUPPORTS_HOTPLUG_CPU
1899 config SYS_HAS_CPU_LOONGSON3
1901 select CPU_SUPPORTS_CPUFREQ
1904 config SYS_HAS_CPU_LOONGSON2E
1907 config SYS_HAS_CPU_LOONGSON2F
1909 select CPU_SUPPORTS_CPUFREQ
1910 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1911 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1913 config SYS_HAS_CPU_LOONGSON1B
1916 config SYS_HAS_CPU_LOONGSON1C
1919 config SYS_HAS_CPU_MIPS32_R1
1922 config SYS_HAS_CPU_MIPS32_R2
1925 config SYS_HAS_CPU_MIPS32_R3_5
1928 config SYS_HAS_CPU_MIPS32_R5
1931 config SYS_HAS_CPU_MIPS32_R6
1934 config SYS_HAS_CPU_MIPS64_R1
1937 config SYS_HAS_CPU_MIPS64_R2
1940 config SYS_HAS_CPU_MIPS64_R6
1943 config SYS_HAS_CPU_R3000
1946 config SYS_HAS_CPU_TX39XX
1949 config SYS_HAS_CPU_VR41XX
1952 config SYS_HAS_CPU_R4300
1955 config SYS_HAS_CPU_R4X00
1958 config SYS_HAS_CPU_TX49XX
1961 config SYS_HAS_CPU_R5000
1964 config SYS_HAS_CPU_R5432
1967 config SYS_HAS_CPU_R5500
1970 config SYS_HAS_CPU_NEVADA
1973 config SYS_HAS_CPU_R8000
1976 config SYS_HAS_CPU_R10000
1979 config SYS_HAS_CPU_RM7000
1982 config SYS_HAS_CPU_SB1
1985 config SYS_HAS_CPU_CAVIUM_OCTEON
1988 config SYS_HAS_CPU_BMIPS
1991 config SYS_HAS_CPU_BMIPS32_3300
1993 select SYS_HAS_CPU_BMIPS
1995 config SYS_HAS_CPU_BMIPS4350
1997 select SYS_HAS_CPU_BMIPS
1999 config SYS_HAS_CPU_BMIPS4380
2001 select SYS_HAS_CPU_BMIPS
2003 config SYS_HAS_CPU_BMIPS5000
2005 select SYS_HAS_CPU_BMIPS
2007 config SYS_HAS_CPU_XLR
2010 config SYS_HAS_CPU_XLP
2014 # CPU may reorder R->R, R->W, W->R, W->W
2015 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2017 config WEAK_ORDERING
2021 # CPU may reorder reads and writes beyond LL/SC
2022 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2024 config WEAK_REORDERING_BEYOND_LLSC
2029 # These two indicate any level of the MIPS32 and MIPS64 architecture
2033 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2037 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2040 # These indicate the revision of the architecture
2044 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2048 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2054 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2056 select HAVE_ARCH_BITREVERSE
2057 select MIPS_ASID_BITS_VARIABLE
2058 select MIPS_CRC_SUPPORT
2061 config TARGET_ISA_REV
2063 default 1 if CPU_MIPSR1
2064 default 2 if CPU_MIPSR2
2065 default 6 if CPU_MIPSR6
2068 Reflects the ISA revision being targeted by the kernel build. This
2069 is effectively the Kconfig equivalent of MIPS_ISA_REV.
2077 config SYS_SUPPORTS_32BIT_KERNEL
2079 config SYS_SUPPORTS_64BIT_KERNEL
2081 config CPU_SUPPORTS_32BIT_KERNEL
2083 config CPU_SUPPORTS_64BIT_KERNEL
2085 config CPU_SUPPORTS_CPUFREQ
2087 config CPU_SUPPORTS_ADDRWINCFG
2089 config CPU_SUPPORTS_HUGEPAGES
2091 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2093 config MIPS_PGD_C0_CONTEXT
2095 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2098 # Set to y for ptrace access to watch registers.
2100 config HARDWARE_WATCHPOINTS
2102 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2107 prompt "Kernel code model"
2109 You should only select this option if you have a workload that
2110 actually benefits from 64-bit processing or if your machine has
2111 large memory. You will only be presented a single option in this
2112 menu if your system does not support both 32-bit and 64-bit kernels.
2115 bool "32-bit kernel"
2116 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2119 Select this option if you want to build a 32-bit kernel.
2122 bool "64-bit kernel"
2123 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2125 Select this option if you want to build a 64-bit kernel.
2130 bool "KVM Guest Kernel"
2131 depends on BROKEN_ON_SMP
2133 Select this option if building a guest kernel for KVM (Trap & Emulate)
2136 config KVM_GUEST_TIMER_FREQ
2137 int "Count/Compare Timer Frequency (MHz)"
2138 depends on KVM_GUEST
2141 Set this to non-zero if building a guest kernel for KVM to skip RTC
2142 emulation when determining guest CPU Frequency. Instead, the guest's
2143 timer frequency is specified directly.
2145 config MIPS_VA_BITS_48
2146 bool "48 bits virtual memory"
2149 Support a maximum at least 48 bits of application virtual
2150 memory. Default is 40 bits or less, depending on the CPU.
2151 For page sizes 16k and above, this option results in a small
2152 memory overhead for page tables. For 4k page size, a fourth
2153 level of page tables is added which imposes both a memory
2154 overhead as well as slower TLB fault handling.
2159 prompt "Kernel page size"
2160 default PAGE_SIZE_4KB
2162 config PAGE_SIZE_4KB
2164 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2166 This option select the standard 4kB Linux page size. On some
2167 R3000-family processors this is the only available page size. Using
2168 4kB page size will minimize memory consumption and is therefore
2169 recommended for low memory systems.
2171 config PAGE_SIZE_8KB
2173 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2174 depends on !MIPS_VA_BITS_48
2176 Using 8kB page size will result in higher performance kernel at
2177 the price of higher memory consumption. This option is available
2178 only on R8000 and cnMIPS processors. Note that you will need a
2179 suitable Linux distribution to support this.
2181 config PAGE_SIZE_16KB
2183 depends on !CPU_R3000 && !CPU_TX39XX
2185 Using 16kB page size will result in higher performance kernel at
2186 the price of higher memory consumption. This option is available on
2187 all non-R3000 family processors. Note that you will need a suitable
2188 Linux distribution to support this.
2190 config PAGE_SIZE_32KB
2192 depends on CPU_CAVIUM_OCTEON
2193 depends on !MIPS_VA_BITS_48
2195 Using 32kB page size will result in higher performance kernel at
2196 the price of higher memory consumption. This option is available
2197 only on cnMIPS cores. Note that you will need a suitable Linux
2198 distribution to support this.
2200 config PAGE_SIZE_64KB
2202 depends on !CPU_R3000 && !CPU_TX39XX
2204 Using 64kB 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 processor. Not that at the time of this
2207 writing this option is still high experimental.
2211 config FORCE_MAX_ZONEORDER
2212 int "Maximum zone order"
2213 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2214 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2215 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2216 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2217 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2218 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2222 The kernel memory allocator divides physically contiguous memory
2223 blocks into "zones", where each zone is a power of two number of
2224 pages. This option selects the largest power of two that the kernel
2225 keeps in the memory allocator. If you need to allocate very large
2226 blocks of physically contiguous memory, then you may need to
2227 increase this value.
2229 This config option is actually maximum order plus one. For example,
2230 a value of 11 means that the largest free memory block is 2^10 pages.
2232 The page size is not necessarily 4KB. Keep this in mind
2233 when choosing a value for this option.
2238 config IP22_CPU_SCACHE
2243 # Support for a MIPS32 / MIPS64 style S-caches
2245 config MIPS_CPU_SCACHE
2249 config R5000_CPU_SCACHE
2253 config RM7000_CPU_SCACHE
2257 config SIBYTE_DMA_PAGEOPS
2258 bool "Use DMA to clear/copy pages"
2261 Instead of using the CPU to zero and copy pages, use a Data Mover
2262 channel. These DMA channels are otherwise unused by the standard
2263 SiByte Linux port. Seems to give a small performance benefit.
2265 config CPU_HAS_PREFETCH
2268 config CPU_GENERIC_DUMP_TLB
2270 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
2272 config MIPS_FP_SUPPORT
2273 bool "Floating Point support" if EXPERT
2276 Select y to include support for floating point in the kernel
2277 including initialization of FPU hardware, FP context save & restore
2278 and emulation of an FPU where necessary. Without this support any
2279 userland program attempting to use floating point instructions will
2282 If you know that your userland will not attempt to use floating point
2283 instructions then you can say n here to shrink the kernel a little.
2287 config CPU_R2300_FPU
2289 depends on MIPS_FP_SUPPORT
2290 default y if CPU_R3000 || CPU_TX39XX
2294 depends on MIPS_FP_SUPPORT
2295 default y if !CPU_R2300_FPU
2297 config CPU_R4K_CACHE_TLB
2299 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2302 bool "MIPS MT SMP support (1 TC on each available VPE)"
2304 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2305 select CPU_MIPSR2_IRQ_VI
2306 select CPU_MIPSR2_IRQ_EI
2311 select SYS_SUPPORTS_SMP
2312 select SYS_SUPPORTS_SCHED_SMT
2313 select MIPS_PERF_SHARED_TC_COUNTERS
2315 This is a kernel model which is known as SMVP. This is supported
2316 on cores with the MT ASE and uses the available VPEs to implement
2317 virtual processors which supports SMP. This is equivalent to the
2318 Intel Hyperthreading feature. For further information go to
2319 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2325 bool "SMT (multithreading) scheduler support"
2326 depends on SYS_SUPPORTS_SCHED_SMT
2329 SMT scheduler support improves the CPU scheduler's decision making
2330 when dealing with MIPS MT enabled cores at a cost of slightly
2331 increased overhead in some places. If unsure say N here.
2333 config SYS_SUPPORTS_SCHED_SMT
2336 config SYS_SUPPORTS_MULTITHREADING
2339 config MIPS_MT_FPAFF
2340 bool "Dynamic FPU affinity for FP-intensive threads"
2342 depends on MIPS_MT_SMP
2344 config MIPSR2_TO_R6_EMULATOR
2345 bool "MIPS R2-to-R6 emulator"
2346 depends on CPU_MIPSR6
2347 depends on MIPS_FP_SUPPORT
2350 Choose this option if you want to run non-R6 MIPS userland code.
2351 Even if you say 'Y' here, the emulator will still be disabled by
2352 default. You can enable it using the 'mipsr2emu' kernel option.
2353 The only reason this is a build-time option is to save ~14K from the
2356 config SYS_SUPPORTS_VPE_LOADER
2358 depends on SYS_SUPPORTS_MULTITHREADING
2360 Indicates that the platform supports the VPE loader, and provides
2363 config MIPS_VPE_LOADER
2364 bool "VPE loader support."
2365 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2366 select CPU_MIPSR2_IRQ_VI
2367 select CPU_MIPSR2_IRQ_EI
2370 Includes a loader for loading an elf relocatable object
2371 onto another VPE and running it.
2373 config MIPS_VPE_LOADER_CMP
2376 depends on MIPS_VPE_LOADER && MIPS_CMP
2378 config MIPS_VPE_LOADER_MT
2381 depends on MIPS_VPE_LOADER && !MIPS_CMP
2383 config MIPS_VPE_LOADER_TOM
2384 bool "Load VPE program into memory hidden from linux"
2385 depends on MIPS_VPE_LOADER
2388 The loader can use memory that is present but has been hidden from
2389 Linux using the kernel command line option "mem=xxMB". It's up to
2390 you to ensure the amount you put in the option and the space your
2391 program requires is less or equal to the amount physically present.
2393 config MIPS_VPE_APSP_API
2394 bool "Enable support for AP/SP API (RTLX)"
2395 depends on MIPS_VPE_LOADER
2397 config MIPS_VPE_APSP_API_CMP
2400 depends on MIPS_VPE_APSP_API && MIPS_CMP
2402 config MIPS_VPE_APSP_API_MT
2405 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2408 bool "MIPS CMP framework support (DEPRECATED)"
2409 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2412 select SYS_SUPPORTS_SMP
2413 select WEAK_ORDERING
2416 Select this if you are using a bootloader which implements the "CMP
2417 framework" protocol (ie. YAMON) and want your kernel to make use of
2418 its ability to start secondary CPUs.
2420 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2424 bool "MIPS Coherent Processing System support"
2425 depends on SYS_SUPPORTS_MIPS_CPS
2427 select MIPS_CPS_PM if HOTPLUG_CPU
2429 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2430 select SYS_SUPPORTS_HOTPLUG_CPU
2431 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2432 select SYS_SUPPORTS_SMP
2433 select WEAK_ORDERING
2435 Select this if you wish to run an SMP kernel across multiple cores
2436 within a MIPS Coherent Processing System. When this option is
2437 enabled the kernel will probe for other cores and boot them with
2438 no external assistance. It is safe to enable this when hardware
2439 support is unavailable.
2452 config SB1_PASS_2_WORKAROUNDS
2454 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2457 config SB1_PASS_2_1_WORKAROUNDS
2459 depends on CPU_SB1 && CPU_SB1_PASS_2
2464 prompt "SmartMIPS or microMIPS ASE support"
2466 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2469 Select this if you want neither microMIPS nor SmartMIPS support
2471 config CPU_HAS_SMARTMIPS
2472 depends on SYS_SUPPORTS_SMARTMIPS
2475 SmartMIPS is a extension of the MIPS32 architecture aimed at
2476 increased security at both hardware and software level for
2477 smartcards. Enabling this option will allow proper use of the
2478 SmartMIPS instructions by Linux applications. However a kernel with
2479 this option will not work on a MIPS core without SmartMIPS core. If
2480 you don't know you probably don't have SmartMIPS and should say N
2483 config CPU_MICROMIPS
2484 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2487 When this option is enabled the kernel will be built using the
2493 bool "Support for the MIPS SIMD Architecture"
2494 depends on CPU_SUPPORTS_MSA
2495 depends on MIPS_FP_SUPPORT
2496 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2498 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2499 and a set of SIMD instructions to operate on them. When this option
2500 is enabled the kernel will support allocating & switching MSA
2501 vector register contexts. If you know that your kernel will only be
2502 running on CPUs which do not support MSA or that your userland will
2503 not be making use of it then you may wish to say N here to reduce
2504 the size & complexity of your kernel.
2517 config CPU_HAS_LOAD_STORE_LR
2520 CPU has support for unaligned load and store instructions:
2521 LWL, LWR, SWL, SWR (Load/store word left/right).
2522 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit systems).
2525 # Vectored interrupt mode is an R2 feature
2527 config CPU_MIPSR2_IRQ_VI
2531 # Extended interrupt mode is an R2 feature
2533 config CPU_MIPSR2_IRQ_EI
2538 depends on !CPU_R3000
2544 config CPU_DADDI_WORKAROUNDS
2547 config CPU_R4000_WORKAROUNDS
2549 select CPU_R4400_WORKAROUNDS
2551 config CPU_R4400_WORKAROUNDS
2554 config MIPS_ASID_SHIFT
2556 default 6 if CPU_R3000 || CPU_TX39XX
2557 default 4 if CPU_R8000
2560 config MIPS_ASID_BITS
2562 default 0 if MIPS_ASID_BITS_VARIABLE
2563 default 6 if CPU_R3000 || CPU_TX39XX
2566 config MIPS_ASID_BITS_VARIABLE
2569 config MIPS_CRC_SUPPORT
2573 # - Highmem only makes sense for the 32-bit kernel.
2574 # - The current highmem code will only work properly on physically indexed
2575 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2576 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2577 # moment we protect the user and offer the highmem option only on machines
2578 # where it's known to be safe. This will not offer highmem on a few systems
2579 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2580 # indexed CPUs but we're playing safe.
2581 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2582 # know they might have memory configurations that could make use of highmem
2586 bool "High Memory Support"
2587 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2589 config CPU_SUPPORTS_HIGHMEM
2592 config SYS_SUPPORTS_HIGHMEM
2595 config SYS_SUPPORTS_SMARTMIPS
2598 config SYS_SUPPORTS_MICROMIPS
2601 config SYS_SUPPORTS_MIPS16
2604 This option must be set if a kernel might be executed on a MIPS16-
2605 enabled CPU even if MIPS16 is not actually being used. In other
2606 words, it makes the kernel MIPS16-tolerant.
2608 config CPU_SUPPORTS_MSA
2611 config ARCH_FLATMEM_ENABLE
2613 depends on !NUMA && !CPU_LOONGSON2
2615 config ARCH_DISCONTIGMEM_ENABLE
2617 default y if SGI_IP27
2619 Say Y to support efficient handling of discontiguous physical memory,
2620 for architectures which are either NUMA (Non-Uniform Memory Access)
2621 or have huge holes in the physical address space for other reasons.
2622 See <file:Documentation/vm/numa.rst> for more.
2624 config ARCH_SPARSEMEM_ENABLE
2626 select SPARSEMEM_STATIC
2630 depends on SYS_SUPPORTS_NUMA
2632 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2633 Access). This option improves performance on systems with more
2634 than two nodes; on two node systems it is generally better to
2635 leave it disabled; on single node systems disable this option
2638 config SYS_SUPPORTS_NUMA
2642 bool "Relocatable kernel"
2643 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2645 This builds a kernel image that retains relocation information
2646 so it can be loaded someplace besides the default 1MB.
2647 The relocations make the kernel binary about 15% larger,
2648 but are discarded at runtime
2650 config RELOCATION_TABLE_SIZE
2651 hex "Relocation table size"
2652 depends on RELOCATABLE
2653 range 0x0 0x01000000
2654 default "0x00100000"
2656 A table of relocation data will be appended to the kernel binary
2657 and parsed at boot to fix up the relocated kernel.
2659 This option allows the amount of space reserved for the table to be
2660 adjusted, although the default of 1Mb should be ok in most cases.
2662 The build will fail and a valid size suggested if this is too small.
2664 If unsure, leave at the default value.
2666 config RANDOMIZE_BASE
2667 bool "Randomize the address of the kernel image"
2668 depends on RELOCATABLE
2670 Randomizes the physical and virtual address at which the
2671 kernel image is loaded, as a security feature that
2672 deters exploit attempts relying on knowledge of the location
2673 of kernel internals.
2675 Entropy is generated using any coprocessor 0 registers available.
2677 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2681 config RANDOMIZE_BASE_MAX_OFFSET
2682 hex "Maximum kASLR offset" if EXPERT
2683 depends on RANDOMIZE_BASE
2684 range 0x0 0x40000000 if EVA || 64BIT
2685 range 0x0 0x08000000
2686 default "0x01000000"
2688 When kASLR is active, this provides the maximum offset that will
2689 be applied to the kernel image. It should be set according to the
2690 amount of physical RAM available in the target system minus
2691 PHYSICAL_START and must be a power of 2.
2693 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2694 EVA or 64-bit. The default is 16Mb.
2699 depends on NEED_MULTIPLE_NODES
2701 config HW_PERF_EVENTS
2702 bool "Enable hardware performance counter support for perf events"
2703 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2706 Enable hardware performance counter support for perf events. If
2707 disabled, perf events will use software events only.
2710 bool "Multi-Processing support"
2711 depends on SYS_SUPPORTS_SMP
2713 This enables support for systems with more than one CPU. If you have
2714 a system with only one CPU, say N. If you have a system with more
2715 than one CPU, say Y.
2717 If you say N here, the kernel will run on uni- and multiprocessor
2718 machines, but will use only one CPU of a multiprocessor machine. If
2719 you say Y here, the kernel will run on many, but not all,
2720 uniprocessor machines. On a uniprocessor machine, the kernel
2721 will run faster if you say N here.
2723 People using multiprocessor machines who say Y here should also say
2724 Y to "Enhanced Real Time Clock Support", below.
2726 See also the SMP-HOWTO available at
2727 <http://www.tldp.org/docs.html#howto>.
2729 If you don't know what to do here, say N.
2732 bool "Support for hot-pluggable CPUs"
2733 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2735 Say Y here to allow turning CPUs off and on. CPUs can be
2736 controlled through /sys/devices/system/cpu.
2737 (Note: power management support will enable this option
2738 automatically on SMP systems. )
2739 Say N if you want to disable CPU hotplug.
2744 config SYS_SUPPORTS_MIPS_CMP
2747 config SYS_SUPPORTS_MIPS_CPS
2750 config SYS_SUPPORTS_SMP
2753 config NR_CPUS_DEFAULT_4
2756 config NR_CPUS_DEFAULT_8
2759 config NR_CPUS_DEFAULT_16
2762 config NR_CPUS_DEFAULT_32
2765 config NR_CPUS_DEFAULT_64
2769 int "Maximum number of CPUs (2-256)"
2772 default "4" if NR_CPUS_DEFAULT_4
2773 default "8" if NR_CPUS_DEFAULT_8
2774 default "16" if NR_CPUS_DEFAULT_16
2775 default "32" if NR_CPUS_DEFAULT_32
2776 default "64" if NR_CPUS_DEFAULT_64
2778 This allows you to specify the maximum number of CPUs which this
2779 kernel will support. The maximum supported value is 32 for 32-bit
2780 kernel and 64 for 64-bit kernels; the minimum value which makes
2781 sense is 1 for Qemu (useful only for kernel debugging purposes)
2782 and 2 for all others.
2784 This is purely to save memory - each supported CPU adds
2785 approximately eight kilobytes to the kernel image. For best
2786 performance should round up your number of processors to the next
2789 config MIPS_PERF_SHARED_TC_COUNTERS
2792 config MIPS_NR_CPU_NR_MAP_1024
2795 config MIPS_NR_CPU_NR_MAP
2798 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2799 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2802 # Timer Interrupt Frequency Configuration
2806 prompt "Timer frequency"
2809 Allows the configuration of the timer frequency.
2812 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2815 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2818 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2821 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2824 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2827 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2830 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2833 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2837 config SYS_SUPPORTS_24HZ
2840 config SYS_SUPPORTS_48HZ
2843 config SYS_SUPPORTS_100HZ
2846 config SYS_SUPPORTS_128HZ
2849 config SYS_SUPPORTS_250HZ
2852 config SYS_SUPPORTS_256HZ
2855 config SYS_SUPPORTS_1000HZ
2858 config SYS_SUPPORTS_1024HZ
2861 config SYS_SUPPORTS_ARBIT_HZ
2863 default y if !SYS_SUPPORTS_24HZ && \
2864 !SYS_SUPPORTS_48HZ && \
2865 !SYS_SUPPORTS_100HZ && \
2866 !SYS_SUPPORTS_128HZ && \
2867 !SYS_SUPPORTS_250HZ && \
2868 !SYS_SUPPORTS_256HZ && \
2869 !SYS_SUPPORTS_1000HZ && \
2870 !SYS_SUPPORTS_1024HZ
2876 default 100 if HZ_100
2877 default 128 if HZ_128
2878 default 250 if HZ_250
2879 default 256 if HZ_256
2880 default 1000 if HZ_1000
2881 default 1024 if HZ_1024
2884 def_bool HIGH_RES_TIMERS
2887 bool "Kexec system call"
2890 kexec is a system call that implements the ability to shutdown your
2891 current kernel, and to start another kernel. It is like a reboot
2892 but it is independent of the system firmware. And like a reboot
2893 you can start any kernel with it, not just Linux.
2895 The name comes from the similarity to the exec system call.
2897 It is an ongoing process to be certain the hardware in a machine
2898 is properly shutdown, so do not be surprised if this code does not
2899 initially work for you. As of this writing the exact hardware
2900 interface is strongly in flux, so no good recommendation can be
2904 bool "Kernel crash dumps"
2906 Generate crash dump after being started by kexec.
2907 This should be normally only set in special crash dump kernels
2908 which are loaded in the main kernel with kexec-tools into
2909 a specially reserved region and then later executed after
2910 a crash by kdump/kexec. The crash dump kernel must be compiled
2911 to a memory address not used by the main kernel or firmware using
2914 config PHYSICAL_START
2915 hex "Physical address where the kernel is loaded"
2916 default "0xffffffff84000000"
2917 depends on CRASH_DUMP
2919 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2920 If you plan to use kernel for capturing the crash dump change
2921 this value to start of the reserved region (the "X" value as
2922 specified in the "crashkernel=YM@XM" command line boot parameter
2923 passed to the panic-ed kernel).
2926 bool "Enable seccomp to safely compute untrusted bytecode"
2930 This kernel feature is useful for number crunching applications
2931 that may need to compute untrusted bytecode during their
2932 execution. By using pipes or other transports made available to
2933 the process as file descriptors supporting the read/write
2934 syscalls, it's possible to isolate those applications in
2935 their own address space using seccomp. Once seccomp is
2936 enabled via /proc/<pid>/seccomp, it cannot be disabled
2937 and the task is only allowed to execute a few safe syscalls
2938 defined by each seccomp mode.
2940 If unsure, say Y. Only embedded should say N here.
2942 config MIPS_O32_FP64_SUPPORT
2943 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
2944 depends on 32BIT || MIPS32_O32
2946 When this is enabled, the kernel will support use of 64-bit floating
2947 point registers with binaries using the O32 ABI along with the
2948 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2949 32-bit MIPS systems this support is at the cost of increasing the
2950 size and complexity of the compiled FPU emulator. Thus if you are
2951 running a MIPS32 system and know that none of your userland binaries
2952 will require 64-bit floating point, you may wish to reduce the size
2953 of your kernel & potentially improve FP emulation performance by
2956 Although binutils currently supports use of this flag the details
2957 concerning its effect upon the O32 ABI in userland are still being
2958 worked on. In order to avoid userland becoming dependant upon current
2959 behaviour before the details have been finalised, this option should
2960 be considered experimental and only enabled by those working upon
2968 select OF_EARLY_FLATTREE
2978 prompt "Kernel appended dtb support" if USE_OF
2979 default MIPS_NO_APPENDED_DTB
2981 config MIPS_NO_APPENDED_DTB
2984 Do not enable appended dtb support.
2986 config MIPS_ELF_APPENDED_DTB
2989 With this option, the boot code will look for a device tree binary
2990 DTB) included in the vmlinux ELF section .appended_dtb. By default
2991 it is empty and the DTB can be appended using binutils command
2994 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2996 This is meant as a backward compatiblity convenience for those
2997 systems with a bootloader that can't be upgraded to accommodate
2998 the documented boot protocol using a device tree.
3000 config MIPS_RAW_APPENDED_DTB
3001 bool "vmlinux.bin or vmlinuz.bin"
3003 With this option, the boot code will look for a device tree binary
3004 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
3005 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
3007 This is meant as a backward compatibility convenience for those
3008 systems with a bootloader that can't be upgraded to accommodate
3009 the documented boot protocol using a device tree.
3011 Beware that there is very little in terms of protection against
3012 this option being confused by leftover garbage in memory that might
3013 look like a DTB header after a reboot if no actual DTB is appended
3014 to vmlinux.bin. Do not leave this option active in a production kernel
3015 if you don't intend to always append a DTB.
3019 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
3020 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
3023 default MIPS_CMDLINE_FROM_BOOTLOADER
3025 config MIPS_CMDLINE_FROM_DTB
3027 bool "Dtb kernel arguments if available"
3029 config MIPS_CMDLINE_DTB_EXTEND
3031 bool "Extend dtb kernel arguments with bootloader arguments"
3033 config MIPS_CMDLINE_FROM_BOOTLOADER
3034 bool "Bootloader kernel arguments if available"
3036 config MIPS_CMDLINE_BUILTIN_EXTEND
3037 depends on CMDLINE_BOOL
3038 bool "Extend builtin kernel arguments with bootloader arguments"
3043 config LOCKDEP_SUPPORT
3047 config STACKTRACE_SUPPORT
3051 config HAVE_LATENCYTOP_SUPPORT
3055 config PGTABLE_LEVELS
3057 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3058 default 3 if 64BIT && !PAGE_SIZE_64KB
3061 config MIPS_AUTO_PFN_OFFSET
3064 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3072 bool "Support for PCI controller"
3073 depends on HW_HAS_PCI
3076 Find out whether you have a PCI motherboard. PCI is the name of a
3077 bus system, i.e. the way the CPU talks to the other stuff inside
3078 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
3082 bool "Support for HT-linked PCI"
3084 depends on CPU_LOONGSON3
3088 Loongson family machines use Hyper-Transport bus for inter-core
3089 connection and device connection. The PCI bus is a subordinate
3090 linked at HT. Choose Y for Loongson-3 based machines.
3095 config PCI_DOMAINS_GENERIC
3098 config PCI_DRIVERS_GENERIC
3099 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3102 config PCI_DRIVERS_LEGACY
3103 def_bool !PCI_DRIVERS_GENERIC
3104 select NO_GENERIC_PCI_IOPORT_MAP
3106 source "drivers/pci/Kconfig"
3109 # ISA support is now enabled via select. Too many systems still have the one
3110 # or other ISA chip on the board that users don't know about so don't expect
3111 # users to choose the right thing ...
3118 depends on HW_HAS_EISA
3120 select GENERIC_ISA_DMA
3122 The Extended Industry Standard Architecture (EISA) bus was
3123 developed as an open alternative to the IBM MicroChannel bus.
3125 The EISA bus provided some of the features of the IBM MicroChannel
3126 bus while maintaining backward compatibility with cards made for
3127 the older ISA bus. The EISA bus saw limited use between 1988 and
3128 1995 when it was made obsolete by the PCI bus.
3130 Say Y here if you are building a kernel for an EISA-based machine.
3134 source "drivers/eisa/Kconfig"
3137 bool "TURBOchannel support"
3138 depends on MACH_DECSTATION
3140 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3141 processors. TURBOchannel programming specifications are available
3143 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3145 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3146 Linux driver support status is documented at:
3147 <http://www.linux-mips.org/wiki/DECstation>
3153 config ARCH_MMAP_RND_BITS_MIN
3157 config ARCH_MMAP_RND_BITS_MAX
3161 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3164 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3171 select MIPS_EXTERNAL_TIMER
3179 source "drivers/pcmcia/Kconfig"
3186 tristate "RapidIO support"
3187 depends on HAS_RAPIDIO || PCI
3189 If you say Y here, the kernel will include drivers and
3190 infrastructure code to support RapidIO interconnect devices.
3192 source "drivers/rapidio/Kconfig"
3199 config MIPS32_COMPAT
3205 config SYSVIPC_COMPAT
3209 bool "Kernel support for o32 binaries"
3211 select ARCH_WANT_OLD_COMPAT_IPC
3213 select MIPS32_COMPAT
3214 select SYSVIPC_COMPAT if SYSVIPC
3216 Select this option if you want to run o32 binaries. These are pure
3217 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3218 existing binaries are in this format.
3223 bool "Kernel support for n32 binaries"
3226 select MIPS32_COMPAT
3227 select SYSVIPC_COMPAT if SYSVIPC
3229 Select this option if you want to run n32 binaries. These are
3230 64-bit binaries using 32-bit quantities for addressing and certain
3231 data that would normally be 64-bit. They are used in special
3238 default y if MIPS32_O32 || MIPS32_N32
3241 menu "Power management options"
3243 config ARCH_HIBERNATION_POSSIBLE
3245 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3247 config ARCH_SUSPEND_POSSIBLE
3249 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3251 source "kernel/power/Kconfig"
3255 config MIPS_EXTERNAL_TIMER
3258 menu "CPU Power Management"
3260 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3261 source "drivers/cpufreq/Kconfig"
3264 source "drivers/cpuidle/Kconfig"
3268 source "drivers/firmware/Kconfig"
3270 source "arch/mips/kvm/Kconfig"