1 # SPDX-License-Identifier: GPL-2.0
5 select ARCH_32BIT_OFF_T if !64BIT
6 select ARCH_BINFMT_ELF_STATE if MIPS_FP_SUPPORT
7 select ARCH_CLOCKSOURCE_DATA
8 select ARCH_HAS_ELF_RANDOMIZE
9 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
10 select ARCH_HAS_UBSAN_SANITIZE_ALL
11 select ARCH_SUPPORTS_UPROBES
12 select ARCH_USE_BUILTIN_BSWAP
13 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
14 select ARCH_USE_QUEUED_RWLOCKS
15 select ARCH_USE_QUEUED_SPINLOCKS
16 select ARCH_WANT_IPC_PARSE_VERSION
17 select BUILDTIME_EXTABLE_SORT
18 select CLONE_BACKWARDS
19 select CPU_NO_EFFICIENT_FFS if (TARGET_ISA_REV < 1)
20 select CPU_PM if CPU_IDLE
21 select GENERIC_ATOMIC64 if !64BIT
22 select GENERIC_CLOCKEVENTS
23 select GENERIC_CMOS_UPDATE
24 select GENERIC_CPU_AUTOPROBE
26 select GENERIC_IRQ_PROBE
27 select GENERIC_IRQ_SHOW
28 select GENERIC_ISA_DMA if EISA
29 select GENERIC_LIB_ASHLDI3
30 select GENERIC_LIB_ASHRDI3
31 select GENERIC_LIB_CMPDI2
32 select GENERIC_LIB_LSHRDI3
33 select GENERIC_LIB_UCMPDI2
34 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
35 select GENERIC_SMP_IDLE_THREAD
36 select GENERIC_TIME_VSYSCALL
37 select GUP_GET_PTE_LOW_HIGH if CPU_MIPS32 && PHYS_ADDR_T_64BIT
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_ASM_MODVERSIONS
48 select HAVE_EBPF_JIT if (!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
58 select HAVE_FTRACE_MCOUNT_RECORD
59 select HAVE_FUNCTION_GRAPH_TRACER
60 select HAVE_FUNCTION_TRACER
62 select HAVE_IOREMAP_PROT
63 select HAVE_IRQ_EXIT_ON_IRQ_STACK
64 select HAVE_IRQ_TIME_ACCOUNTING
66 select HAVE_KRETPROBES
67 select HAVE_LD_DEAD_CODE_DATA_ELIMINATION
68 select HAVE_MEMBLOCK_NODE_MAP
69 select HAVE_MOD_ARCH_SPECIFIC
72 select HAVE_PERF_EVENTS
73 select HAVE_REGS_AND_STACK_ACCESS_API
75 select HAVE_STACKPROTECTOR
76 select HAVE_SYSCALL_TRACEPOINTS
77 select HAVE_VIRT_CPU_ACCOUNTING_GEN if 64BIT || !SMP
78 select IRQ_FORCED_THREADING
80 select MODULES_USE_ELF_RELA if MODULES && 64BIT
81 select MODULES_USE_ELF_REL if MODULES
82 select PERF_USE_VMALLOC
84 select SYSCTL_EXCEPTION_TRACE
87 menu "Machine selection"
94 bool "Generic board-agnostic MIPS kernel"
98 select CLKSRC_MIPS_GIC
100 select CPU_MIPSR2_IRQ_VI
101 select CPU_MIPSR2_IRQ_EI
103 select DMA_PERDEV_COHERENT
107 select MIPS_AUTO_PFN_OFFSET
108 select MIPS_CPU_SCACHE
110 select MIPS_L1_CACHE_SHIFT_7
111 select NO_EXCEPT_FILL
112 select PCI_DRIVERS_GENERIC
116 select SYS_HAS_CPU_MIPS32_R1
117 select SYS_HAS_CPU_MIPS32_R2
118 select SYS_HAS_CPU_MIPS32_R6
119 select SYS_HAS_CPU_MIPS64_R1
120 select SYS_HAS_CPU_MIPS64_R2
121 select SYS_HAS_CPU_MIPS64_R6
122 select SYS_SUPPORTS_32BIT_KERNEL
123 select SYS_SUPPORTS_64BIT_KERNEL
124 select SYS_SUPPORTS_BIG_ENDIAN
125 select SYS_SUPPORTS_HIGHMEM
126 select SYS_SUPPORTS_LITTLE_ENDIAN
127 select SYS_SUPPORTS_MICROMIPS
128 select SYS_SUPPORTS_MIPS_CPS
129 select SYS_SUPPORTS_MIPS16
130 select SYS_SUPPORTS_MULTITHREADING
131 select SYS_SUPPORTS_RELOCATABLE
132 select SYS_SUPPORTS_SMARTMIPS
133 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
134 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
135 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
136 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
137 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
138 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
142 Select this to build a kernel which aims to support multiple boards,
143 generally using a flattened device tree passed from the bootloader
144 using the boot protocol defined in the UHI (Unified Hosting
145 Interface) specification.
148 bool "Alchemy processor based machines"
149 select PHYS_ADDR_T_64BIT
153 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
154 select SYS_HAS_CPU_MIPS32_R1
155 select SYS_SUPPORTS_32BIT_KERNEL
156 select SYS_SUPPORTS_APM_EMULATION
158 select SYS_SUPPORTS_ZBOOT
162 bool "Texas Instruments AR7"
164 select DMA_NONCOHERENT
168 select NO_EXCEPT_FILL
170 select SYS_HAS_CPU_MIPS32_R1
171 select SYS_HAS_EARLY_PRINTK
172 select SYS_SUPPORTS_32BIT_KERNEL
173 select SYS_SUPPORTS_LITTLE_ENDIAN
174 select SYS_SUPPORTS_MIPS16
175 select SYS_SUPPORTS_ZBOOT_UART16550
180 Support for the Texas Instruments AR7 System-on-a-Chip
181 family: TNETD7100, 7200 and 7300.
184 bool "Atheros AR231x/AR531x SoC support"
187 select DMA_NONCOHERENT
190 select SYS_HAS_CPU_MIPS32_R1
191 select SYS_SUPPORTS_BIG_ENDIAN
192 select SYS_SUPPORTS_32BIT_KERNEL
193 select SYS_HAS_EARLY_PRINTK
195 Support for Atheros AR231x and Atheros AR531x based boards
198 bool "Atheros AR71XX/AR724X/AR913X based boards"
199 select ARCH_HAS_RESET_CONTROLLER
203 select DMA_NONCOHERENT
210 select SYS_HAS_CPU_MIPS32_R2
211 select SYS_HAS_EARLY_PRINTK
212 select SYS_SUPPORTS_32BIT_KERNEL
213 select SYS_SUPPORTS_BIG_ENDIAN
214 select SYS_SUPPORTS_MIPS16
215 select SYS_SUPPORTS_ZBOOT_UART_PROM
217 select USB_EHCI_ROOT_HUB_TT if USB_EHCI_HCD_PLATFORM
219 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
222 bool "Broadcom Generic BMIPS kernel"
223 select ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
224 select ARCH_HAS_PHYS_TO_DMA
226 select NO_EXCEPT_FILL
232 select BCM6345_L1_IRQ
233 select BCM7038_L1_IRQ
234 select BCM7120_L2_IRQ
235 select BRCMSTB_L2_IRQ
237 select DMA_NONCOHERENT
238 select SYS_SUPPORTS_32BIT_KERNEL
239 select SYS_SUPPORTS_LITTLE_ENDIAN
240 select SYS_SUPPORTS_BIG_ENDIAN
241 select SYS_SUPPORTS_HIGHMEM
242 select SYS_HAS_CPU_BMIPS32_3300
243 select SYS_HAS_CPU_BMIPS4350
244 select SYS_HAS_CPU_BMIPS4380
245 select SYS_HAS_CPU_BMIPS5000
247 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
248 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
249 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
250 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
251 select HARDIRQS_SW_RESEND
253 Build a generic DT-based kernel image that boots on select
254 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
255 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
256 must be set appropriately for your board.
259 bool "Broadcom BCM47XX based boards"
263 select DMA_NONCOHERENT
266 select SYS_HAS_CPU_MIPS32_R1
267 select NO_EXCEPT_FILL
268 select SYS_SUPPORTS_32BIT_KERNEL
269 select SYS_SUPPORTS_LITTLE_ENDIAN
270 select SYS_SUPPORTS_MIPS16
271 select SYS_SUPPORTS_ZBOOT
272 select SYS_HAS_EARLY_PRINTK
273 select USE_GENERIC_EARLY_PRINTK_8250
275 select LEDS_GPIO_REGISTER
278 select BCM47XX_SSB if !BCM47XX_BCMA
280 Support for BCM47XX based boards
283 bool "Broadcom BCM63XX based boards"
288 select DMA_NONCOHERENT
290 select SYS_SUPPORTS_32BIT_KERNEL
291 select SYS_SUPPORTS_BIG_ENDIAN
292 select SYS_HAS_EARLY_PRINTK
296 select MIPS_L1_CACHE_SHIFT_4
299 Support for BCM63XX based boards
306 select DMA_NONCOHERENT
312 select PCI_GT64XXX_PCI0
313 select SYS_HAS_CPU_NEVADA
314 select SYS_HAS_EARLY_PRINTK
315 select SYS_SUPPORTS_32BIT_KERNEL
316 select SYS_SUPPORTS_64BIT_KERNEL
317 select SYS_SUPPORTS_LITTLE_ENDIAN
318 select USE_GENERIC_EARLY_PRINTK_8250
320 config MACH_DECSTATION
324 select CEVT_R4K if CPU_R4X00
326 select CSRC_R4K if CPU_R4X00
327 select CPU_DADDI_WORKAROUNDS if 64BIT
328 select CPU_R4000_WORKAROUNDS if 64BIT
329 select CPU_R4400_WORKAROUNDS if 64BIT
330 select DMA_NONCOHERENT
333 select SYS_HAS_CPU_R3000
334 select SYS_HAS_CPU_R4X00
335 select SYS_SUPPORTS_32BIT_KERNEL
336 select SYS_SUPPORTS_64BIT_KERNEL
337 select SYS_SUPPORTS_LITTLE_ENDIAN
338 select SYS_SUPPORTS_128HZ
339 select SYS_SUPPORTS_256HZ
340 select SYS_SUPPORTS_1024HZ
341 select MIPS_L1_CACHE_SHIFT_4
343 This enables support for DEC's MIPS based workstations. For details
344 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
345 DECstation porting pages on <http://decstation.unix-ag.org/>.
347 If you have one of the following DECstation Models you definitely
348 want to choose R4xx0 for the CPU Type:
355 otherwise choose R3000.
358 bool "Jazz family of machines"
359 select ARCH_MIGHT_HAVE_PC_PARPORT
360 select ARCH_MIGHT_HAVE_PC_SERIO
363 select ARCH_MAY_HAVE_PC_FDC
366 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
367 select GENERIC_ISA_DMA
368 select HAVE_PCSPKR_PLATFORM
373 select SYS_HAS_CPU_R4X00
374 select SYS_SUPPORTS_32BIT_KERNEL
375 select SYS_SUPPORTS_64BIT_KERNEL
376 select SYS_SUPPORTS_100HZ
378 This a family of machines based on the MIPS R4030 chipset which was
379 used by several vendors to build RISC/os and Windows NT workstations.
380 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
381 Olivetti M700-10 workstations.
384 bool "Ingenic SoC based machines"
385 select SYS_SUPPORTS_32BIT_KERNEL
386 select SYS_SUPPORTS_LITTLE_ENDIAN
387 select SYS_SUPPORTS_ZBOOT_UART16550
388 select DMA_NONCOHERENT
393 select GENERIC_IRQ_CHIP
394 select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
399 bool "Lantiq based platforms"
400 select DMA_NONCOHERENT
404 select SYS_HAS_CPU_MIPS32_R1
405 select SYS_HAS_CPU_MIPS32_R2
406 select SYS_SUPPORTS_BIG_ENDIAN
407 select SYS_SUPPORTS_32BIT_KERNEL
408 select SYS_SUPPORTS_MIPS16
409 select SYS_SUPPORTS_MULTITHREADING
410 select SYS_SUPPORTS_VPE_LOADER
411 select SYS_HAS_EARLY_PRINTK
418 select PINCTRL_LANTIQ
419 select ARCH_HAS_RESET_CONTROLLER
420 select RESET_CONTROLLER
423 bool "LASAT Networks platforms"
427 select DMA_NONCOHERENT
428 select SYS_HAS_EARLY_PRINTK
431 select PCI_GT64XXX_PCI0
433 select R5000_CPU_SCACHE
434 select SYS_HAS_CPU_R5000
435 select SYS_SUPPORTS_32BIT_KERNEL
436 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
437 select SYS_SUPPORTS_LITTLE_ENDIAN
439 config MACH_LOONGSON32
440 bool "Loongson-1 family of machines"
441 select SYS_SUPPORTS_ZBOOT
443 This enables support for the Loongson-1 family of machines.
445 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
446 the Institute of Computing Technology (ICT), Chinese Academy of
449 config MACH_LOONGSON64
450 bool "Loongson-2/3 family of machines"
451 select SYS_SUPPORTS_ZBOOT
453 This enables the support of Loongson-2/3 family of machines.
455 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
456 family of multi-core CPUs. They are both 64-bit general-purpose
457 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
458 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
459 in the People's Republic of China. The chief architect is Professor
462 config MACH_PISTACHIO
463 bool "IMG Pistachio SoC based boards"
467 select CLKSRC_MIPS_GIC
470 select DMA_NONCOHERENT
475 select MIPS_CPU_SCACHE
479 select SYS_HAS_CPU_MIPS32_R2
480 select SYS_SUPPORTS_32BIT_KERNEL
481 select SYS_SUPPORTS_LITTLE_ENDIAN
482 select SYS_SUPPORTS_MIPS_CPS
483 select SYS_SUPPORTS_MULTITHREADING
484 select SYS_SUPPORTS_RELOCATABLE
485 select SYS_SUPPORTS_ZBOOT
486 select SYS_HAS_EARLY_PRINTK
487 select USE_GENERIC_EARLY_PRINTK_8250
490 This enables support for the IMG Pistachio SoC platform.
493 bool "MIPS Malta board"
494 select ARCH_MAY_HAVE_PC_FDC
495 select ARCH_MIGHT_HAVE_PC_PARPORT
496 select ARCH_MIGHT_HAVE_PC_SERIO
501 select CLKSRC_MIPS_GIC
504 select DMA_MAYBE_COHERENT
505 select GENERIC_ISA_DMA
506 select HAVE_PCSPKR_PLATFORM
513 select MIPS_CPU_SCACHE
515 select MIPS_L1_CACHE_SHIFT_6
517 select PCI_GT64XXX_PCI0
520 select SYS_HAS_CPU_MIPS32_R1
521 select SYS_HAS_CPU_MIPS32_R2
522 select SYS_HAS_CPU_MIPS32_R3_5
523 select SYS_HAS_CPU_MIPS32_R5
524 select SYS_HAS_CPU_MIPS32_R6
525 select SYS_HAS_CPU_MIPS64_R1
526 select SYS_HAS_CPU_MIPS64_R2
527 select SYS_HAS_CPU_MIPS64_R6
528 select SYS_HAS_CPU_NEVADA
529 select SYS_HAS_CPU_RM7000
530 select SYS_SUPPORTS_32BIT_KERNEL
531 select SYS_SUPPORTS_64BIT_KERNEL
532 select SYS_SUPPORTS_BIG_ENDIAN
533 select SYS_SUPPORTS_HIGHMEM
534 select SYS_SUPPORTS_LITTLE_ENDIAN
535 select SYS_SUPPORTS_MICROMIPS
536 select SYS_SUPPORTS_MIPS16
537 select SYS_SUPPORTS_MIPS_CMP
538 select SYS_SUPPORTS_MIPS_CPS
539 select SYS_SUPPORTS_MULTITHREADING
540 select SYS_SUPPORTS_RELOCATABLE
541 select SYS_SUPPORTS_SMARTMIPS
542 select SYS_SUPPORTS_VPE_LOADER
543 select SYS_SUPPORTS_ZBOOT
545 select ZONE_DMA32 if 64BIT
547 This enables support for the MIPS Technologies Malta evaluation
551 bool "Microchip PIC32 Family"
553 This enables support for the Microchip PIC32 family of platforms.
555 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
559 bool "NEC EMMA2RH Mark-eins board"
563 This enables support for the NEC Electronics Mark-eins boards.
566 bool "NEC VR4100 series based machines"
569 select SYS_HAS_CPU_VR41XX
570 select SYS_SUPPORTS_MIPS16
574 bool "NXP STB220 board"
577 Support for NXP Semiconductors STB220 Development Board.
584 Support for NXP Semiconductors STB225 Development Board.
587 bool "PMC-Sierra MSP chipsets"
590 select DMA_NONCOHERENT
592 select NO_EXCEPT_FILL
594 select SYS_HAS_CPU_MIPS32_R1
595 select SYS_HAS_CPU_MIPS32_R2
596 select SYS_SUPPORTS_32BIT_KERNEL
597 select SYS_SUPPORTS_BIG_ENDIAN
598 select SYS_SUPPORTS_MIPS16
601 select SERIAL_8250_CONSOLE
602 select USB_EHCI_BIG_ENDIAN_MMIO
603 select USB_EHCI_BIG_ENDIAN_DESC
605 This adds support for the PMC-Sierra family of Multi-Service
606 Processor System-On-A-Chips. These parts include a number
607 of integrated peripherals, interfaces and DSPs in addition to
608 a variety of MIPS cores.
611 bool "Ralink based machines"
615 select DMA_NONCOHERENT
618 select SYS_HAS_CPU_MIPS32_R1
619 select SYS_HAS_CPU_MIPS32_R2
620 select SYS_SUPPORTS_32BIT_KERNEL
621 select SYS_SUPPORTS_LITTLE_ENDIAN
622 select SYS_SUPPORTS_MIPS16
623 select SYS_HAS_EARLY_PRINTK
625 select ARCH_HAS_RESET_CONTROLLER
626 select RESET_CONTROLLER
629 bool "SGI IP22 (Indy/Indigo2)"
632 select ARCH_MIGHT_HAVE_PC_SERIO
636 select DEFAULT_SGI_PARTITION
637 select DMA_NONCOHERENT
641 select IP22_CPU_SCACHE
643 select GENERIC_ISA_DMA_SUPPORT_BROKEN
645 select SGI_HAS_INDYDOG
651 select SYS_HAS_CPU_R4X00
652 select SYS_HAS_CPU_R5000
654 # Disable EARLY_PRINTK for now since it leads to overwritten prom
655 # memory during early boot on some machines.
657 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
658 # for a more details discussion
660 # select SYS_HAS_EARLY_PRINTK
661 select SYS_SUPPORTS_32BIT_KERNEL
662 select SYS_SUPPORTS_64BIT_KERNEL
663 select SYS_SUPPORTS_BIG_ENDIAN
664 select MIPS_L1_CACHE_SHIFT_7
666 This are the SGI Indy, Challenge S and Indigo2, as well as certain
667 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
668 that runs on these, say Y here.
671 bool "SGI IP27 (Origin200/2000)"
672 select ARCH_HAS_PHYS_TO_DMA
676 select DEFAULT_SGI_PARTITION
677 select SYS_HAS_EARLY_PRINTK
680 select IRQ_DOMAIN_HIERARCHY
681 select NR_CPUS_DEFAULT_64
682 select PCI_DRIVERS_GENERIC
683 select PCI_XTALK_BRIDGE
684 select SYS_HAS_CPU_R10000
685 select SYS_SUPPORTS_64BIT_KERNEL
686 select SYS_SUPPORTS_BIG_ENDIAN
687 select SYS_SUPPORTS_NUMA
688 select SYS_SUPPORTS_SMP
689 select MIPS_L1_CACHE_SHIFT_7
691 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
692 workstations. To compile a Linux kernel that runs on these, say Y
696 bool "SGI IP28 (Indigo2 R10k)"
699 select ARCH_MIGHT_HAVE_PC_SERIO
703 select DEFAULT_SGI_PARTITION
704 select DMA_NONCOHERENT
705 select GENERIC_ISA_DMA_SUPPORT_BROKEN
711 select SGI_HAS_INDYDOG
717 select SYS_HAS_CPU_R10000
719 # Disable EARLY_PRINTK for now since it leads to overwritten prom
720 # memory during early boot on some machines.
722 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
723 # for a more details discussion
725 # select SYS_HAS_EARLY_PRINTK
726 select SYS_SUPPORTS_64BIT_KERNEL
727 select SYS_SUPPORTS_BIG_ENDIAN
728 select MIPS_L1_CACHE_SHIFT_7
730 This is the SGI Indigo2 with R10000 processor. To compile a Linux
731 kernel that runs on these, say Y here.
735 select ARCH_HAS_PHYS_TO_DMA
741 select DMA_NONCOHERENT
744 select R5000_CPU_SCACHE
745 select RM7000_CPU_SCACHE
746 select SYS_HAS_CPU_R5000
747 select SYS_HAS_CPU_R10000 if BROKEN
748 select SYS_HAS_CPU_RM7000
749 select SYS_HAS_CPU_NEVADA
750 select SYS_SUPPORTS_64BIT_KERNEL
751 select SYS_SUPPORTS_BIG_ENDIAN
753 If you want this kernel to run on SGI O2 workstation, say Y here.
756 bool "Sibyte BCM91120C-CRhine"
758 select SIBYTE_BCM1120
760 select SYS_HAS_CPU_SB1
761 select SYS_SUPPORTS_BIG_ENDIAN
762 select SYS_SUPPORTS_LITTLE_ENDIAN
765 bool "Sibyte BCM91120x-Carmel"
767 select SIBYTE_BCM1120
769 select SYS_HAS_CPU_SB1
770 select SYS_SUPPORTS_BIG_ENDIAN
771 select SYS_SUPPORTS_LITTLE_ENDIAN
774 bool "Sibyte BCM91125C-CRhone"
776 select SIBYTE_BCM1125
778 select SYS_HAS_CPU_SB1
779 select SYS_SUPPORTS_BIG_ENDIAN
780 select SYS_SUPPORTS_HIGHMEM
781 select SYS_SUPPORTS_LITTLE_ENDIAN
784 bool "Sibyte BCM91125E-Rhone"
786 select SIBYTE_BCM1125H
788 select SYS_HAS_CPU_SB1
789 select SYS_SUPPORTS_BIG_ENDIAN
790 select SYS_SUPPORTS_LITTLE_ENDIAN
793 bool "Sibyte BCM91250A-SWARM"
795 select HAVE_PATA_PLATFORM
798 select SYS_HAS_CPU_SB1
799 select SYS_SUPPORTS_BIG_ENDIAN
800 select SYS_SUPPORTS_HIGHMEM
801 select SYS_SUPPORTS_LITTLE_ENDIAN
802 select ZONE_DMA32 if 64BIT
803 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
805 config SIBYTE_LITTLESUR
806 bool "Sibyte BCM91250C2-LittleSur"
808 select HAVE_PATA_PLATFORM
811 select SYS_HAS_CPU_SB1
812 select SYS_SUPPORTS_BIG_ENDIAN
813 select SYS_SUPPORTS_HIGHMEM
814 select SYS_SUPPORTS_LITTLE_ENDIAN
815 select ZONE_DMA32 if 64BIT
817 config SIBYTE_SENTOSA
818 bool "Sibyte BCM91250E-Sentosa"
822 select SYS_HAS_CPU_SB1
823 select SYS_SUPPORTS_BIG_ENDIAN
824 select SYS_SUPPORTS_LITTLE_ENDIAN
825 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
828 bool "Sibyte BCM91480B-BigSur"
830 select NR_CPUS_DEFAULT_4
831 select SIBYTE_BCM1x80
833 select SYS_HAS_CPU_SB1
834 select SYS_SUPPORTS_BIG_ENDIAN
835 select SYS_SUPPORTS_HIGHMEM
836 select SYS_SUPPORTS_LITTLE_ENDIAN
837 select ZONE_DMA32 if 64BIT
838 select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI
841 bool "SNI RM200/300/400"
842 select FW_ARC if CPU_LITTLE_ENDIAN
843 select FW_ARC32 if CPU_LITTLE_ENDIAN
844 select FW_SNIPROM if CPU_BIG_ENDIAN
845 select ARCH_MAY_HAVE_PC_FDC
846 select ARCH_MIGHT_HAVE_PC_PARPORT
847 select ARCH_MIGHT_HAVE_PC_SERIO
851 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
852 select DMA_NONCOHERENT
853 select GENERIC_ISA_DMA
855 select HAVE_PCSPKR_PLATFORM
861 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
862 select SYS_HAS_CPU_R4X00
863 select SYS_HAS_CPU_R5000
864 select SYS_HAS_CPU_R10000
865 select R5000_CPU_SCACHE
866 select SYS_HAS_EARLY_PRINTK
867 select SYS_SUPPORTS_32BIT_KERNEL
868 select SYS_SUPPORTS_64BIT_KERNEL
869 select SYS_SUPPORTS_BIG_ENDIAN
870 select SYS_SUPPORTS_HIGHMEM
871 select SYS_SUPPORTS_LITTLE_ENDIAN
873 The SNI RM200/300/400 are MIPS-based machines manufactured by
874 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
875 Technology and now in turn merged with Fujitsu. Say Y here to
876 support this machine type.
879 bool "Toshiba TX39 series based machines"
882 bool "Toshiba TX49 series based machines"
884 config MIKROTIK_RB532
885 bool "Mikrotik RB532 boards"
888 select DMA_NONCOHERENT
891 select SYS_HAS_CPU_MIPS32_R1
892 select SYS_SUPPORTS_32BIT_KERNEL
893 select SYS_SUPPORTS_LITTLE_ENDIAN
897 select MIPS_L1_CACHE_SHIFT_4
899 Support the Mikrotik(tm) RouterBoard 532 series,
900 based on the IDT RC32434 SoC.
902 config CAVIUM_OCTEON_SOC
903 bool "Cavium Networks Octeon SoC based boards"
905 select ARCH_HAS_PHYS_TO_DMA
907 select PHYS_ADDR_T_64BIT
908 select SYS_SUPPORTS_64BIT_KERNEL
909 select SYS_SUPPORTS_BIG_ENDIAN
911 select EDAC_ATOMIC_SCRUB
912 select SYS_SUPPORTS_LITTLE_ENDIAN
913 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
914 select SYS_HAS_EARLY_PRINTK
915 select SYS_HAS_CPU_CAVIUM_OCTEON
922 select ARCH_SPARSEMEM_ENABLE
923 select SYS_SUPPORTS_SMP
924 select NR_CPUS_DEFAULT_64
925 select MIPS_NR_CPU_NR_MAP_1024
927 select MTD_COMPLEX_MAPPINGS
929 select SYS_SUPPORTS_RELOCATABLE
931 This option supports all of the Octeon reference boards from Cavium
932 Networks. It builds a kernel that dynamically determines the Octeon
933 CPU type and supports all known board reference implementations.
934 Some of the supported boards are:
941 Say Y here for most Octeon reference boards.
944 bool "Netlogic XLR/XLS based systems"
947 select SYS_HAS_CPU_XLR
948 select SYS_SUPPORTS_SMP
951 select SYS_SUPPORTS_32BIT_KERNEL
952 select SYS_SUPPORTS_64BIT_KERNEL
953 select PHYS_ADDR_T_64BIT
954 select SYS_SUPPORTS_BIG_ENDIAN
955 select SYS_SUPPORTS_HIGHMEM
956 select NR_CPUS_DEFAULT_32
960 select ZONE_DMA32 if 64BIT
962 select SYS_HAS_EARLY_PRINTK
963 select SYS_SUPPORTS_ZBOOT
964 select SYS_SUPPORTS_ZBOOT_UART16550
966 Support for systems based on Netlogic XLR and XLS processors.
967 Say Y here if you have a XLR or XLS based board.
970 bool "Netlogic XLP based systems"
973 select SYS_HAS_CPU_XLP
974 select SYS_SUPPORTS_SMP
976 select SYS_SUPPORTS_32BIT_KERNEL
977 select SYS_SUPPORTS_64BIT_KERNEL
978 select PHYS_ADDR_T_64BIT
980 select SYS_SUPPORTS_BIG_ENDIAN
981 select SYS_SUPPORTS_LITTLE_ENDIAN
982 select SYS_SUPPORTS_HIGHMEM
983 select NR_CPUS_DEFAULT_32
987 select ZONE_DMA32 if 64BIT
989 select SYS_HAS_EARLY_PRINTK
991 select SYS_SUPPORTS_ZBOOT
992 select SYS_SUPPORTS_ZBOOT_UART16550
994 This board is based on Netlogic XLP Processor.
995 Say Y here if you have a XLP based board.
998 bool "Para-Virtualized guest system"
1001 select SYS_SUPPORTS_64BIT_KERNEL
1002 select SYS_SUPPORTS_32BIT_KERNEL
1003 select SYS_SUPPORTS_BIG_ENDIAN
1004 select SYS_SUPPORTS_SMP
1005 select NR_CPUS_DEFAULT_4
1006 select SYS_HAS_EARLY_PRINTK
1007 select SYS_HAS_CPU_MIPS32_R2
1008 select SYS_HAS_CPU_MIPS64_R2
1009 select SYS_HAS_CPU_CAVIUM_OCTEON
1011 select SWAP_IO_SPACE
1013 This option supports guest running under ????
1017 source "arch/mips/alchemy/Kconfig"
1018 source "arch/mips/ath25/Kconfig"
1019 source "arch/mips/ath79/Kconfig"
1020 source "arch/mips/bcm47xx/Kconfig"
1021 source "arch/mips/bcm63xx/Kconfig"
1022 source "arch/mips/bmips/Kconfig"
1023 source "arch/mips/generic/Kconfig"
1024 source "arch/mips/jazz/Kconfig"
1025 source "arch/mips/jz4740/Kconfig"
1026 source "arch/mips/lantiq/Kconfig"
1027 source "arch/mips/lasat/Kconfig"
1028 source "arch/mips/pic32/Kconfig"
1029 source "arch/mips/pistachio/Kconfig"
1030 source "arch/mips/pmcs-msp71xx/Kconfig"
1031 source "arch/mips/ralink/Kconfig"
1032 source "arch/mips/sgi-ip27/Kconfig"
1033 source "arch/mips/sibyte/Kconfig"
1034 source "arch/mips/txx9/Kconfig"
1035 source "arch/mips/vr41xx/Kconfig"
1036 source "arch/mips/cavium-octeon/Kconfig"
1037 source "arch/mips/loongson32/Kconfig"
1038 source "arch/mips/loongson64/Kconfig"
1039 source "arch/mips/netlogic/Kconfig"
1040 source "arch/mips/paravirt/Kconfig"
1044 config GENERIC_HWEIGHT
1048 config GENERIC_CALIBRATE_DELAY
1052 config SCHED_OMIT_FRAME_POINTER
1057 # Select some configuration options automatically based on user selections.
1062 config ARCH_MAY_HAVE_PC_FDC
1098 config MIPS_CLOCK_VSYSCALL
1099 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1108 config ARCH_SUPPORTS_UPROBES
1111 config DMA_MAYBE_COHERENT
1112 select ARCH_HAS_DMA_COHERENCE_H
1113 select DMA_NONCOHERENT
1116 config DMA_PERDEV_COHERENT
1118 select ARCH_HAS_SETUP_DMA_OPS
1119 select DMA_NONCOHERENT
1121 config DMA_NONCOHERENT
1124 # MIPS allows mixing "slightly different" Cacheability and Coherency
1125 # Attribute bits. It is believed that the uncached access through
1126 # KSEG1 and the implementation specific "uncached accelerated" used
1127 # by pgprot_writcombine can be mixed, and the latter sometimes provides
1128 # significant advantages.
1130 select ARCH_HAS_DMA_WRITE_COMBINE
1131 select ARCH_HAS_SYNC_DMA_FOR_DEVICE
1132 select ARCH_HAS_UNCACHED_SEGMENT
1133 select NEED_DMA_MAP_STATE
1134 select ARCH_HAS_DMA_COHERENT_TO_PFN
1135 select DMA_NONCOHERENT_CACHE_SYNC
1137 config SYS_HAS_EARLY_PRINTK
1140 config SYS_SUPPORTS_HOTPLUG_CPU
1143 config MIPS_BONITO64
1158 config NO_IOPORT_MAP
1163 default y if !CPU_HAS_LOAD_STORE_LR
1165 config GENERIC_ISA_DMA
1167 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1170 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1172 select GENERIC_ISA_DMA
1177 config HOLES_IN_ZONE
1180 config SYS_SUPPORTS_RELOCATABLE
1183 Selected if the platform supports relocating the kernel.
1184 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1185 to allow access to command line and entropy sources.
1187 config MIPS_CBPF_JIT
1189 depends on BPF_JIT && HAVE_CBPF_JIT
1191 config MIPS_EBPF_JIT
1193 depends on BPF_JIT && HAVE_EBPF_JIT
1197 # Endianness selection. Sufficiently obscure so many users don't know what to
1198 # answer,so we try hard to limit the available choices. Also the use of a
1199 # choice statement should be more obvious to the user.
1202 prompt "Endianness selection"
1204 Some MIPS machines can be configured for either little or big endian
1205 byte order. These modes require different kernels and a different
1206 Linux distribution. In general there is one preferred byteorder for a
1207 particular system but some systems are just as commonly used in the
1208 one or the other endianness.
1210 config CPU_BIG_ENDIAN
1212 depends on SYS_SUPPORTS_BIG_ENDIAN
1214 config CPU_LITTLE_ENDIAN
1215 bool "Little endian"
1216 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1223 config SYS_SUPPORTS_APM_EMULATION
1226 config SYS_SUPPORTS_BIG_ENDIAN
1229 config SYS_SUPPORTS_LITTLE_ENDIAN
1232 config SYS_SUPPORTS_HUGETLBFS
1234 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1237 config MIPS_HUGE_TLB_SUPPORT
1238 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1255 config PCI_GT64XXX_PCI0
1258 config PCI_XTALK_BRIDGE
1261 config NO_EXCEPT_FILL
1268 select DMA_NONCOHERENT
1270 select SWAP_IO_SPACE
1271 select SYS_HAS_CPU_R5500
1272 select SYS_SUPPORTS_32BIT_KERNEL
1273 select SYS_SUPPORTS_64BIT_KERNEL
1274 select SYS_SUPPORTS_BIG_ENDIAN
1281 select DMA_NONCOHERENT
1282 select SYS_HAS_CPU_MIPS32_R2
1283 select SYS_SUPPORTS_32BIT_KERNEL
1284 select SYS_SUPPORTS_LITTLE_ENDIAN
1285 select SYS_SUPPORTS_BIG_ENDIAN
1286 select SYS_SUPPORTS_MIPS16
1287 select CPU_MIPSR2_IRQ_VI
1296 config SWAP_IO_SPACE
1299 config SGI_HAS_INDYDOG
1311 config SGI_HAS_ZILOG
1314 config SGI_HAS_I8042
1317 config DEFAULT_SGI_PARTITION
1329 config MIPS_L1_CACHE_SHIFT_4
1332 config MIPS_L1_CACHE_SHIFT_5
1335 config MIPS_L1_CACHE_SHIFT_6
1338 config MIPS_L1_CACHE_SHIFT_7
1341 config MIPS_L1_CACHE_SHIFT
1343 default "7" if MIPS_L1_CACHE_SHIFT_7
1344 default "6" if MIPS_L1_CACHE_SHIFT_6
1345 default "5" if MIPS_L1_CACHE_SHIFT_5
1346 default "4" if MIPS_L1_CACHE_SHIFT_4
1349 config HAVE_STD_PC_SERIAL_PORT
1353 bool "ARC console support"
1354 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1358 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1363 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1372 menu "CPU selection"
1378 config CPU_LOONGSON3
1379 bool "Loongson 3 CPU"
1380 depends on SYS_HAS_CPU_LOONGSON3
1381 select ARCH_HAS_PHYS_TO_DMA
1382 select CPU_SUPPORTS_64BIT_KERNEL
1383 select CPU_SUPPORTS_HIGHMEM
1384 select CPU_SUPPORTS_HUGEPAGES
1385 select CPU_HAS_LOAD_STORE_LR
1386 select WEAK_ORDERING
1387 select WEAK_REORDERING_BEYOND_LLSC
1388 select MIPS_PGD_C0_CONTEXT
1389 select MIPS_L1_CACHE_SHIFT_6
1393 The Loongson 3 processor implements the MIPS64R2 instruction
1394 set with many extensions.
1396 config LOONGSON3_ENHANCEMENT
1397 bool "New Loongson 3 CPU Enhancements"
1400 select CPU_HAS_PREFETCH
1401 depends on CPU_LOONGSON3
1403 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1404 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1405 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1406 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1407 Fast TLB refill support, etc.
1409 This option enable those enhancements which are not probed at run
1410 time. If you want a generic kernel to run on all Loongson 3 machines,
1411 please say 'N' here. If you want a high-performance kernel to run on
1412 new Loongson 3 machines only, please say 'Y' here.
1414 config CPU_LOONGSON3_WORKAROUNDS
1415 bool "Old Loongson 3 LLSC Workarounds"
1417 depends on CPU_LOONGSON3
1419 Loongson 3 processors have the llsc issues which require workarounds.
1420 Without workarounds the system may hang unexpectedly.
1422 Newer Loongson 3 will fix these issues and no workarounds are needed.
1423 The workarounds have no significant side effect on them but may
1424 decrease the performance of the system so this option should be
1425 disabled unless the kernel is intended to be run on old systems.
1427 If unsure, please say Y.
1429 config CPU_LOONGSON2E
1431 depends on SYS_HAS_CPU_LOONGSON2E
1432 select CPU_LOONGSON2
1434 The Loongson 2E processor implements the MIPS III instruction set
1435 with many extensions.
1437 It has an internal FPGA northbridge, which is compatible to
1440 config CPU_LOONGSON2F
1442 depends on SYS_HAS_CPU_LOONGSON2F
1443 select CPU_LOONGSON2
1446 The Loongson 2F processor implements the MIPS III instruction set
1447 with many extensions.
1449 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1450 have a similar programming interface with FPGA northbridge used in
1453 config CPU_LOONGSON1B
1455 depends on SYS_HAS_CPU_LOONGSON1B
1456 select CPU_LOONGSON1
1457 select LEDS_GPIO_REGISTER
1459 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1460 Release 1 instruction set and part of the MIPS32 Release 2
1463 config CPU_LOONGSON1C
1465 depends on SYS_HAS_CPU_LOONGSON1C
1466 select CPU_LOONGSON1
1467 select LEDS_GPIO_REGISTER
1469 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1470 Release 1 instruction set and part of the MIPS32 Release 2
1473 config CPU_MIPS32_R1
1474 bool "MIPS32 Release 1"
1475 depends on SYS_HAS_CPU_MIPS32_R1
1476 select CPU_HAS_PREFETCH
1477 select CPU_HAS_LOAD_STORE_LR
1478 select CPU_SUPPORTS_32BIT_KERNEL
1479 select CPU_SUPPORTS_HIGHMEM
1481 Choose this option to build a kernel for release 1 or later of the
1482 MIPS32 architecture. Most modern embedded systems with a 32-bit
1483 MIPS processor are based on a MIPS32 processor. If you know the
1484 specific type of processor in your system, choose those that one
1485 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1486 Release 2 of the MIPS32 architecture is available since several
1487 years so chances are you even have a MIPS32 Release 2 processor
1488 in which case you should choose CPU_MIPS32_R2 instead for better
1491 config CPU_MIPS32_R2
1492 bool "MIPS32 Release 2"
1493 depends on SYS_HAS_CPU_MIPS32_R2
1494 select CPU_HAS_PREFETCH
1495 select CPU_HAS_LOAD_STORE_LR
1496 select CPU_SUPPORTS_32BIT_KERNEL
1497 select CPU_SUPPORTS_HIGHMEM
1498 select CPU_SUPPORTS_MSA
1501 Choose this option to build a kernel for release 2 or later of the
1502 MIPS32 architecture. Most modern embedded systems with a 32-bit
1503 MIPS processor are based on a MIPS32 processor. If you know the
1504 specific type of processor in your system, choose those that one
1505 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1507 config CPU_MIPS32_R6
1508 bool "MIPS32 Release 6"
1509 depends on SYS_HAS_CPU_MIPS32_R6
1510 select CPU_HAS_PREFETCH
1511 select CPU_SUPPORTS_32BIT_KERNEL
1512 select CPU_SUPPORTS_HIGHMEM
1513 select CPU_SUPPORTS_MSA
1515 select MIPS_O32_FP64_SUPPORT
1517 Choose this option to build a kernel for release 6 or later of the
1518 MIPS32 architecture. New MIPS processors, starting with the Warrior
1519 family, are based on a MIPS32r6 processor. If you own an older
1520 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1522 config CPU_MIPS64_R1
1523 bool "MIPS64 Release 1"
1524 depends on SYS_HAS_CPU_MIPS64_R1
1525 select CPU_HAS_PREFETCH
1526 select CPU_HAS_LOAD_STORE_LR
1527 select CPU_SUPPORTS_32BIT_KERNEL
1528 select CPU_SUPPORTS_64BIT_KERNEL
1529 select CPU_SUPPORTS_HIGHMEM
1530 select CPU_SUPPORTS_HUGEPAGES
1532 Choose this option to build a kernel for release 1 or later of the
1533 MIPS64 architecture. Many modern embedded systems with a 64-bit
1534 MIPS processor are based on a MIPS64 processor. If you know the
1535 specific type of processor in your system, choose those that one
1536 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1537 Release 2 of the MIPS64 architecture is available since several
1538 years so chances are you even have a MIPS64 Release 2 processor
1539 in which case you should choose CPU_MIPS64_R2 instead for better
1542 config CPU_MIPS64_R2
1543 bool "MIPS64 Release 2"
1544 depends on SYS_HAS_CPU_MIPS64_R2
1545 select CPU_HAS_PREFETCH
1546 select CPU_HAS_LOAD_STORE_LR
1547 select CPU_SUPPORTS_32BIT_KERNEL
1548 select CPU_SUPPORTS_64BIT_KERNEL
1549 select CPU_SUPPORTS_HIGHMEM
1550 select CPU_SUPPORTS_HUGEPAGES
1551 select CPU_SUPPORTS_MSA
1554 Choose this option to build a kernel for release 2 or later of the
1555 MIPS64 architecture. Many modern embedded systems with a 64-bit
1556 MIPS processor are based on a MIPS64 processor. If you know the
1557 specific type of processor in your system, choose those that one
1558 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1560 config CPU_MIPS64_R6
1561 bool "MIPS64 Release 6"
1562 depends on SYS_HAS_CPU_MIPS64_R6
1563 select CPU_HAS_PREFETCH
1564 select CPU_SUPPORTS_32BIT_KERNEL
1565 select CPU_SUPPORTS_64BIT_KERNEL
1566 select CPU_SUPPORTS_HIGHMEM
1567 select CPU_SUPPORTS_HUGEPAGES
1568 select CPU_SUPPORTS_MSA
1569 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1572 Choose this option to build a kernel for release 6 or later of the
1573 MIPS64 architecture. New MIPS processors, starting with the Warrior
1574 family, are based on a MIPS64r6 processor. If you own an older
1575 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1579 depends on SYS_HAS_CPU_R3000
1581 select CPU_HAS_LOAD_STORE_LR
1582 select CPU_SUPPORTS_32BIT_KERNEL
1583 select CPU_SUPPORTS_HIGHMEM
1585 Please make sure to pick the right CPU type. Linux/MIPS is not
1586 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1587 *not* work on R4000 machines and vice versa. However, since most
1588 of the supported machines have an R4000 (or similar) CPU, R4x00
1589 might be a safe bet. If the resulting kernel does not work,
1590 try to recompile with R3000.
1594 depends on SYS_HAS_CPU_TX39XX
1595 select CPU_SUPPORTS_32BIT_KERNEL
1596 select CPU_HAS_LOAD_STORE_LR
1600 depends on SYS_HAS_CPU_VR41XX
1601 select CPU_SUPPORTS_32BIT_KERNEL
1602 select CPU_SUPPORTS_64BIT_KERNEL
1603 select CPU_HAS_LOAD_STORE_LR
1605 The options selects support for the NEC VR4100 series of processors.
1606 Only choose this option if you have one of these processors as a
1607 kernel built with this option will not run on any other type of
1608 processor or vice versa.
1612 depends on SYS_HAS_CPU_R4300
1613 select CPU_SUPPORTS_32BIT_KERNEL
1614 select CPU_SUPPORTS_64BIT_KERNEL
1615 select CPU_HAS_LOAD_STORE_LR
1617 MIPS Technologies R4300-series processors.
1621 depends on SYS_HAS_CPU_R4X00
1622 select CPU_SUPPORTS_32BIT_KERNEL
1623 select CPU_SUPPORTS_64BIT_KERNEL
1624 select CPU_SUPPORTS_HUGEPAGES
1625 select CPU_HAS_LOAD_STORE_LR
1627 MIPS Technologies R4000-series processors other than 4300, including
1628 the R4000, R4400, R4600, and 4700.
1632 depends on SYS_HAS_CPU_TX49XX
1633 select CPU_HAS_PREFETCH
1634 select CPU_HAS_LOAD_STORE_LR
1635 select CPU_SUPPORTS_32BIT_KERNEL
1636 select CPU_SUPPORTS_64BIT_KERNEL
1637 select CPU_SUPPORTS_HUGEPAGES
1641 depends on SYS_HAS_CPU_R5000
1642 select CPU_SUPPORTS_32BIT_KERNEL
1643 select CPU_SUPPORTS_64BIT_KERNEL
1644 select CPU_SUPPORTS_HUGEPAGES
1645 select CPU_HAS_LOAD_STORE_LR
1647 MIPS Technologies R5000-series processors other than the Nevada.
1651 depends on SYS_HAS_CPU_R5432
1652 select CPU_SUPPORTS_32BIT_KERNEL
1653 select CPU_SUPPORTS_64BIT_KERNEL
1654 select CPU_SUPPORTS_HUGEPAGES
1655 select CPU_HAS_LOAD_STORE_LR
1659 depends on SYS_HAS_CPU_R5500
1660 select CPU_SUPPORTS_32BIT_KERNEL
1661 select CPU_SUPPORTS_64BIT_KERNEL
1662 select CPU_SUPPORTS_HUGEPAGES
1663 select CPU_HAS_LOAD_STORE_LR
1665 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1670 depends on SYS_HAS_CPU_NEVADA
1671 select CPU_SUPPORTS_32BIT_KERNEL
1672 select CPU_SUPPORTS_64BIT_KERNEL
1673 select CPU_SUPPORTS_HUGEPAGES
1674 select CPU_HAS_LOAD_STORE_LR
1676 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1680 depends on SYS_HAS_CPU_R8000
1681 select CPU_HAS_PREFETCH
1682 select CPU_HAS_LOAD_STORE_LR
1683 select CPU_SUPPORTS_64BIT_KERNEL
1685 MIPS Technologies R8000 processors. Note these processors are
1686 uncommon and the support for them is incomplete.
1690 depends on SYS_HAS_CPU_R10000
1691 select CPU_HAS_PREFETCH
1692 select CPU_HAS_LOAD_STORE_LR
1693 select CPU_SUPPORTS_32BIT_KERNEL
1694 select CPU_SUPPORTS_64BIT_KERNEL
1695 select CPU_SUPPORTS_HIGHMEM
1696 select CPU_SUPPORTS_HUGEPAGES
1698 MIPS Technologies R10000-series processors.
1702 depends on SYS_HAS_CPU_RM7000
1703 select CPU_HAS_PREFETCH
1704 select CPU_HAS_LOAD_STORE_LR
1705 select CPU_SUPPORTS_32BIT_KERNEL
1706 select CPU_SUPPORTS_64BIT_KERNEL
1707 select CPU_SUPPORTS_HIGHMEM
1708 select CPU_SUPPORTS_HUGEPAGES
1712 depends on SYS_HAS_CPU_SB1
1713 select CPU_HAS_LOAD_STORE_LR
1714 select CPU_SUPPORTS_32BIT_KERNEL
1715 select CPU_SUPPORTS_64BIT_KERNEL
1716 select CPU_SUPPORTS_HIGHMEM
1717 select CPU_SUPPORTS_HUGEPAGES
1718 select WEAK_ORDERING
1720 config CPU_CAVIUM_OCTEON
1721 bool "Cavium Octeon processor"
1722 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1723 select CPU_HAS_PREFETCH
1724 select CPU_HAS_LOAD_STORE_LR
1725 select CPU_SUPPORTS_64BIT_KERNEL
1726 select WEAK_ORDERING
1727 select CPU_SUPPORTS_HIGHMEM
1728 select CPU_SUPPORTS_HUGEPAGES
1729 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1730 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1731 select MIPS_L1_CACHE_SHIFT_7
1734 The Cavium Octeon processor is a highly integrated chip containing
1735 many ethernet hardware widgets for networking tasks. The processor
1736 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1737 Full details can be found at http://www.caviumnetworks.com.
1740 bool "Broadcom BMIPS"
1741 depends on SYS_HAS_CPU_BMIPS
1743 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1744 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1745 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1746 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1747 select CPU_SUPPORTS_32BIT_KERNEL
1748 select DMA_NONCOHERENT
1750 select SWAP_IO_SPACE
1751 select WEAK_ORDERING
1752 select CPU_SUPPORTS_HIGHMEM
1753 select CPU_HAS_PREFETCH
1754 select CPU_HAS_LOAD_STORE_LR
1755 select CPU_SUPPORTS_CPUFREQ
1756 select MIPS_EXTERNAL_TIMER
1758 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1761 bool "Netlogic XLR SoC"
1762 depends on SYS_HAS_CPU_XLR
1763 select CPU_HAS_LOAD_STORE_LR
1764 select CPU_SUPPORTS_32BIT_KERNEL
1765 select CPU_SUPPORTS_64BIT_KERNEL
1766 select CPU_SUPPORTS_HIGHMEM
1767 select CPU_SUPPORTS_HUGEPAGES
1768 select WEAK_ORDERING
1769 select WEAK_REORDERING_BEYOND_LLSC
1771 Netlogic Microsystems XLR/XLS processors.
1774 bool "Netlogic XLP SoC"
1775 depends on SYS_HAS_CPU_XLP
1776 select CPU_SUPPORTS_32BIT_KERNEL
1777 select CPU_SUPPORTS_64BIT_KERNEL
1778 select CPU_SUPPORTS_HIGHMEM
1779 select WEAK_ORDERING
1780 select WEAK_REORDERING_BEYOND_LLSC
1781 select CPU_HAS_PREFETCH
1782 select CPU_HAS_LOAD_STORE_LR
1784 select CPU_SUPPORTS_HUGEPAGES
1785 select MIPS_ASID_BITS_VARIABLE
1787 Netlogic Microsystems XLP processors.
1790 config CPU_MIPS32_3_5_FEATURES
1791 bool "MIPS32 Release 3.5 Features"
1792 depends on SYS_HAS_CPU_MIPS32_R3_5
1793 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1795 Choose this option to build a kernel for release 2 or later of the
1796 MIPS32 architecture including features from the 3.5 release such as
1797 support for Enhanced Virtual Addressing (EVA).
1799 config CPU_MIPS32_3_5_EVA
1800 bool "Enhanced Virtual Addressing (EVA)"
1801 depends on CPU_MIPS32_3_5_FEATURES
1805 Choose this option if you want to enable the Enhanced Virtual
1806 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1807 One of its primary benefits is an increase in the maximum size
1808 of lowmem (up to 3GB). If unsure, say 'N' here.
1810 config CPU_MIPS32_R5_FEATURES
1811 bool "MIPS32 Release 5 Features"
1812 depends on SYS_HAS_CPU_MIPS32_R5
1813 depends on CPU_MIPS32_R2
1815 Choose this option to build a kernel for release 2 or later of the
1816 MIPS32 architecture including features from release 5 such as
1817 support for Extended Physical Addressing (XPA).
1819 config CPU_MIPS32_R5_XPA
1820 bool "Extended Physical Addressing (XPA)"
1821 depends on CPU_MIPS32_R5_FEATURES
1823 depends on !PAGE_SIZE_4KB
1824 depends on SYS_SUPPORTS_HIGHMEM
1827 select PHYS_ADDR_T_64BIT
1830 Choose this option if you want to enable the Extended Physical
1831 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1832 benefit is to increase physical addressing equal to or greater
1833 than 40 bits. Note that this has the side effect of turning on
1834 64-bit addressing which in turn makes the PTEs 64-bit in size.
1835 If unsure, say 'N' here.
1838 config CPU_NOP_WORKAROUNDS
1841 config CPU_JUMP_WORKAROUNDS
1844 config CPU_LOONGSON2F_WORKAROUNDS
1845 bool "Loongson 2F Workarounds"
1847 select CPU_NOP_WORKAROUNDS
1848 select CPU_JUMP_WORKAROUNDS
1850 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1851 require workarounds. Without workarounds the system may hang
1852 unexpectedly. For more information please refer to the gas
1853 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1855 Loongson 2F03 and later have fixed these issues and no workarounds
1856 are needed. The workarounds have no significant side effect on them
1857 but may decrease the performance of the system so this option should
1858 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1861 If unsure, please say Y.
1862 endif # CPU_LOONGSON2F
1864 config SYS_SUPPORTS_ZBOOT
1866 select HAVE_KERNEL_GZIP
1867 select HAVE_KERNEL_BZIP2
1868 select HAVE_KERNEL_LZ4
1869 select HAVE_KERNEL_LZMA
1870 select HAVE_KERNEL_LZO
1871 select HAVE_KERNEL_XZ
1873 config SYS_SUPPORTS_ZBOOT_UART16550
1875 select SYS_SUPPORTS_ZBOOT
1877 config SYS_SUPPORTS_ZBOOT_UART_PROM
1879 select SYS_SUPPORTS_ZBOOT
1881 config CPU_LOONGSON2
1883 select CPU_SUPPORTS_32BIT_KERNEL
1884 select CPU_SUPPORTS_64BIT_KERNEL
1885 select CPU_SUPPORTS_HIGHMEM
1886 select CPU_SUPPORTS_HUGEPAGES
1887 select ARCH_HAS_PHYS_TO_DMA
1888 select CPU_HAS_LOAD_STORE_LR
1890 config CPU_LOONGSON1
1894 select CPU_HAS_PREFETCH
1895 select CPU_HAS_LOAD_STORE_LR
1896 select CPU_SUPPORTS_32BIT_KERNEL
1897 select CPU_SUPPORTS_HIGHMEM
1898 select CPU_SUPPORTS_CPUFREQ
1900 config CPU_BMIPS32_3300
1901 select SMP_UP if SMP
1904 config CPU_BMIPS4350
1906 select SYS_SUPPORTS_SMP
1907 select SYS_SUPPORTS_HOTPLUG_CPU
1909 config CPU_BMIPS4380
1911 select MIPS_L1_CACHE_SHIFT_6
1912 select SYS_SUPPORTS_SMP
1913 select SYS_SUPPORTS_HOTPLUG_CPU
1916 config CPU_BMIPS5000
1918 select MIPS_CPU_SCACHE
1919 select MIPS_L1_CACHE_SHIFT_7
1920 select SYS_SUPPORTS_SMP
1921 select SYS_SUPPORTS_HOTPLUG_CPU
1924 config SYS_HAS_CPU_LOONGSON3
1926 select CPU_SUPPORTS_CPUFREQ
1929 config SYS_HAS_CPU_LOONGSON2E
1932 config SYS_HAS_CPU_LOONGSON2F
1934 select CPU_SUPPORTS_CPUFREQ
1935 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1936 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1938 config SYS_HAS_CPU_LOONGSON1B
1941 config SYS_HAS_CPU_LOONGSON1C
1944 config SYS_HAS_CPU_MIPS32_R1
1947 config SYS_HAS_CPU_MIPS32_R2
1950 config SYS_HAS_CPU_MIPS32_R3_5
1953 config SYS_HAS_CPU_MIPS32_R5
1955 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1957 config SYS_HAS_CPU_MIPS32_R6
1959 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1961 config SYS_HAS_CPU_MIPS64_R1
1964 config SYS_HAS_CPU_MIPS64_R2
1967 config SYS_HAS_CPU_MIPS64_R6
1969 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
1971 config SYS_HAS_CPU_R3000
1974 config SYS_HAS_CPU_TX39XX
1977 config SYS_HAS_CPU_VR41XX
1980 config SYS_HAS_CPU_R4300
1983 config SYS_HAS_CPU_R4X00
1986 config SYS_HAS_CPU_TX49XX
1989 config SYS_HAS_CPU_R5000
1992 config SYS_HAS_CPU_R5432
1995 config SYS_HAS_CPU_R5500
1998 config SYS_HAS_CPU_NEVADA
2001 config SYS_HAS_CPU_R8000
2004 config SYS_HAS_CPU_R10000
2006 select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
2008 config SYS_HAS_CPU_RM7000
2011 config SYS_HAS_CPU_SB1
2014 config SYS_HAS_CPU_CAVIUM_OCTEON
2017 config SYS_HAS_CPU_BMIPS
2020 config SYS_HAS_CPU_BMIPS32_3300
2022 select SYS_HAS_CPU_BMIPS
2024 config SYS_HAS_CPU_BMIPS4350
2026 select SYS_HAS_CPU_BMIPS
2028 config SYS_HAS_CPU_BMIPS4380
2030 select SYS_HAS_CPU_BMIPS
2032 config SYS_HAS_CPU_BMIPS5000
2034 select SYS_HAS_CPU_BMIPS
2035 select ARCH_HAS_SYNC_DMA_FOR_CPU
2037 config SYS_HAS_CPU_XLR
2040 config SYS_HAS_CPU_XLP
2044 # CPU may reorder R->R, R->W, W->R, W->W
2045 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2047 config WEAK_ORDERING
2051 # CPU may reorder reads and writes beyond LL/SC
2052 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2054 config WEAK_REORDERING_BEYOND_LLSC
2059 # These two indicate any level of the MIPS32 and MIPS64 architecture
2063 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2067 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2070 # These indicate the revision of the architecture
2074 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2078 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2084 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2086 select HAVE_ARCH_BITREVERSE
2087 select MIPS_ASID_BITS_VARIABLE
2088 select MIPS_CRC_SUPPORT
2091 config TARGET_ISA_REV
2093 default 1 if CPU_MIPSR1
2094 default 2 if CPU_MIPSR2
2095 default 6 if CPU_MIPSR6
2098 Reflects the ISA revision being targeted by the kernel build. This
2099 is effectively the Kconfig equivalent of MIPS_ISA_REV.
2107 config SYS_SUPPORTS_32BIT_KERNEL
2109 config SYS_SUPPORTS_64BIT_KERNEL
2111 config CPU_SUPPORTS_32BIT_KERNEL
2113 config CPU_SUPPORTS_64BIT_KERNEL
2115 config CPU_SUPPORTS_CPUFREQ
2117 config CPU_SUPPORTS_ADDRWINCFG
2119 config CPU_SUPPORTS_HUGEPAGES
2121 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2123 config MIPS_PGD_C0_CONTEXT
2125 default y if 64BIT && (CPU_MIPSR2 || CPU_MIPSR6) && !CPU_XLP
2128 # Set to y for ptrace access to watch registers.
2130 config HARDWARE_WATCHPOINTS
2132 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2137 prompt "Kernel code model"
2139 You should only select this option if you have a workload that
2140 actually benefits from 64-bit processing or if your machine has
2141 large memory. You will only be presented a single option in this
2142 menu if your system does not support both 32-bit and 64-bit kernels.
2145 bool "32-bit kernel"
2146 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2149 Select this option if you want to build a 32-bit kernel.
2152 bool "64-bit kernel"
2153 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2155 Select this option if you want to build a 64-bit kernel.
2160 bool "KVM Guest Kernel"
2161 depends on BROKEN_ON_SMP
2163 Select this option if building a guest kernel for KVM (Trap & Emulate)
2166 config KVM_GUEST_TIMER_FREQ
2167 int "Count/Compare Timer Frequency (MHz)"
2168 depends on KVM_GUEST
2171 Set this to non-zero if building a guest kernel for KVM to skip RTC
2172 emulation when determining guest CPU Frequency. Instead, the guest's
2173 timer frequency is specified directly.
2175 config MIPS_VA_BITS_48
2176 bool "48 bits virtual memory"
2179 Support a maximum at least 48 bits of application virtual
2180 memory. Default is 40 bits or less, depending on the CPU.
2181 For page sizes 16k and above, this option results in a small
2182 memory overhead for page tables. For 4k page size, a fourth
2183 level of page tables is added which imposes both a memory
2184 overhead as well as slower TLB fault handling.
2189 prompt "Kernel page size"
2190 default PAGE_SIZE_4KB
2192 config PAGE_SIZE_4KB
2194 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2196 This option select the standard 4kB Linux page size. On some
2197 R3000-family processors this is the only available page size. Using
2198 4kB page size will minimize memory consumption and is therefore
2199 recommended for low memory systems.
2201 config PAGE_SIZE_8KB
2203 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2204 depends on !MIPS_VA_BITS_48
2206 Using 8kB page size will result in higher performance kernel at
2207 the price of higher memory consumption. This option is available
2208 only on R8000 and cnMIPS processors. Note that you will need a
2209 suitable Linux distribution to support this.
2211 config PAGE_SIZE_16KB
2213 depends on !CPU_R3000 && !CPU_TX39XX
2215 Using 16kB page size will result in higher performance kernel at
2216 the price of higher memory consumption. This option is available on
2217 all non-R3000 family processors. Note that you will need a suitable
2218 Linux distribution to support this.
2220 config PAGE_SIZE_32KB
2222 depends on CPU_CAVIUM_OCTEON
2223 depends on !MIPS_VA_BITS_48
2225 Using 32kB page size will result in higher performance kernel at
2226 the price of higher memory consumption. This option is available
2227 only on cnMIPS cores. Note that you will need a suitable Linux
2228 distribution to support this.
2230 config PAGE_SIZE_64KB
2232 depends on !CPU_R3000 && !CPU_TX39XX
2234 Using 64kB page size will result in higher performance kernel at
2235 the price of higher memory consumption. This option is available on
2236 all non-R3000 family processor. Not that at the time of this
2237 writing this option is still high experimental.
2241 config FORCE_MAX_ZONEORDER
2242 int "Maximum zone order"
2243 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2244 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2245 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2246 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2247 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2248 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2252 The kernel memory allocator divides physically contiguous memory
2253 blocks into "zones", where each zone is a power of two number of
2254 pages. This option selects the largest power of two that the kernel
2255 keeps in the memory allocator. If you need to allocate very large
2256 blocks of physically contiguous memory, then you may need to
2257 increase this value.
2259 This config option is actually maximum order plus one. For example,
2260 a value of 11 means that the largest free memory block is 2^10 pages.
2262 The page size is not necessarily 4KB. Keep this in mind
2263 when choosing a value for this option.
2268 config IP22_CPU_SCACHE
2273 # Support for a MIPS32 / MIPS64 style S-caches
2275 config MIPS_CPU_SCACHE
2279 config R5000_CPU_SCACHE
2283 config RM7000_CPU_SCACHE
2287 config SIBYTE_DMA_PAGEOPS
2288 bool "Use DMA to clear/copy pages"
2291 Instead of using the CPU to zero and copy pages, use a Data Mover
2292 channel. These DMA channels are otherwise unused by the standard
2293 SiByte Linux port. Seems to give a small performance benefit.
2295 config CPU_HAS_PREFETCH
2298 config CPU_GENERIC_DUMP_TLB
2300 default y if !(CPU_R3000 || CPU_R8000 || CPU_TX39XX)
2302 config MIPS_FP_SUPPORT
2303 bool "Floating Point support" if EXPERT
2306 Select y to include support for floating point in the kernel
2307 including initialization of FPU hardware, FP context save & restore
2308 and emulation of an FPU where necessary. Without this support any
2309 userland program attempting to use floating point instructions will
2312 If you know that your userland will not attempt to use floating point
2313 instructions then you can say n here to shrink the kernel a little.
2317 config CPU_R2300_FPU
2319 depends on MIPS_FP_SUPPORT
2320 default y if CPU_R3000 || CPU_TX39XX
2324 depends on MIPS_FP_SUPPORT
2325 default y if !CPU_R2300_FPU
2327 config CPU_R4K_CACHE_TLB
2329 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2332 bool "MIPS MT SMP support (1 TC on each available VPE)"
2334 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
2335 select CPU_MIPSR2_IRQ_VI
2336 select CPU_MIPSR2_IRQ_EI
2341 select SYS_SUPPORTS_SMP
2342 select SYS_SUPPORTS_SCHED_SMT
2343 select MIPS_PERF_SHARED_TC_COUNTERS
2345 This is a kernel model which is known as SMVP. This is supported
2346 on cores with the MT ASE and uses the available VPEs to implement
2347 virtual processors which supports SMP. This is equivalent to the
2348 Intel Hyperthreading feature. For further information go to
2349 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2355 bool "SMT (multithreading) scheduler support"
2356 depends on SYS_SUPPORTS_SCHED_SMT
2359 SMT scheduler support improves the CPU scheduler's decision making
2360 when dealing with MIPS MT enabled cores at a cost of slightly
2361 increased overhead in some places. If unsure say N here.
2363 config SYS_SUPPORTS_SCHED_SMT
2366 config SYS_SUPPORTS_MULTITHREADING
2369 config MIPS_MT_FPAFF
2370 bool "Dynamic FPU affinity for FP-intensive threads"
2372 depends on MIPS_MT_SMP
2374 config MIPSR2_TO_R6_EMULATOR
2375 bool "MIPS R2-to-R6 emulator"
2376 depends on CPU_MIPSR6
2377 depends on MIPS_FP_SUPPORT
2380 Choose this option if you want to run non-R6 MIPS userland code.
2381 Even if you say 'Y' here, the emulator will still be disabled by
2382 default. You can enable it using the 'mipsr2emu' kernel option.
2383 The only reason this is a build-time option is to save ~14K from the
2386 config SYS_SUPPORTS_VPE_LOADER
2388 depends on SYS_SUPPORTS_MULTITHREADING
2390 Indicates that the platform supports the VPE loader, and provides
2393 config MIPS_VPE_LOADER
2394 bool "VPE loader support."
2395 depends on SYS_SUPPORTS_VPE_LOADER && MODULES
2396 select CPU_MIPSR2_IRQ_VI
2397 select CPU_MIPSR2_IRQ_EI
2400 Includes a loader for loading an elf relocatable object
2401 onto another VPE and running it.
2403 config MIPS_VPE_LOADER_CMP
2406 depends on MIPS_VPE_LOADER && MIPS_CMP
2408 config MIPS_VPE_LOADER_MT
2411 depends on MIPS_VPE_LOADER && !MIPS_CMP
2413 config MIPS_VPE_LOADER_TOM
2414 bool "Load VPE program into memory hidden from linux"
2415 depends on MIPS_VPE_LOADER
2418 The loader can use memory that is present but has been hidden from
2419 Linux using the kernel command line option "mem=xxMB". It's up to
2420 you to ensure the amount you put in the option and the space your
2421 program requires is less or equal to the amount physically present.
2423 config MIPS_VPE_APSP_API
2424 bool "Enable support for AP/SP API (RTLX)"
2425 depends on MIPS_VPE_LOADER
2427 config MIPS_VPE_APSP_API_CMP
2430 depends on MIPS_VPE_APSP_API && MIPS_CMP
2432 config MIPS_VPE_APSP_API_MT
2435 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2438 bool "MIPS CMP framework support (DEPRECATED)"
2439 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2442 select SYS_SUPPORTS_SMP
2443 select WEAK_ORDERING
2446 Select this if you are using a bootloader which implements the "CMP
2447 framework" protocol (ie. YAMON) and want your kernel to make use of
2448 its ability to start secondary CPUs.
2450 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2454 bool "MIPS Coherent Processing System support"
2455 depends on SYS_SUPPORTS_MIPS_CPS
2457 select MIPS_CPS_PM if HOTPLUG_CPU
2459 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2460 select SYS_SUPPORTS_HOTPLUG_CPU
2461 select SYS_SUPPORTS_SCHED_SMT if CPU_MIPSR6
2462 select SYS_SUPPORTS_SMP
2463 select WEAK_ORDERING
2465 Select this if you wish to run an SMP kernel across multiple cores
2466 within a MIPS Coherent Processing System. When this option is
2467 enabled the kernel will probe for other cores and boot them with
2468 no external assistance. It is safe to enable this when hardware
2469 support is unavailable.
2482 config SB1_PASS_2_WORKAROUNDS
2484 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2487 config SB1_PASS_2_1_WORKAROUNDS
2489 depends on CPU_SB1 && CPU_SB1_PASS_2
2493 prompt "SmartMIPS or microMIPS ASE support"
2495 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2498 Select this if you want neither microMIPS nor SmartMIPS support
2500 config CPU_HAS_SMARTMIPS
2501 depends on SYS_SUPPORTS_SMARTMIPS
2504 SmartMIPS is a extension of the MIPS32 architecture aimed at
2505 increased security at both hardware and software level for
2506 smartcards. Enabling this option will allow proper use of the
2507 SmartMIPS instructions by Linux applications. However a kernel with
2508 this option will not work on a MIPS core without SmartMIPS core. If
2509 you don't know you probably don't have SmartMIPS and should say N
2512 config CPU_MICROMIPS
2513 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2516 When this option is enabled the kernel will be built using the
2522 bool "Support for the MIPS SIMD Architecture"
2523 depends on CPU_SUPPORTS_MSA
2524 depends on MIPS_FP_SUPPORT
2525 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2527 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2528 and a set of SIMD instructions to operate on them. When this option
2529 is enabled the kernel will support allocating & switching MSA
2530 vector register contexts. If you know that your kernel will only be
2531 running on CPUs which do not support MSA or that your userland will
2532 not be making use of it then you may wish to say N here to reduce
2533 the size & complexity of your kernel.
2546 config CPU_HAS_LOAD_STORE_LR
2549 CPU has support for unaligned load and store instructions:
2550 LWL, LWR, SWL, SWR (Load/store word left/right).
2551 LDL, LDR, SDL, SDR (Load/store doubleword left/right, for 64bit systems).
2554 # Vectored interrupt mode is an R2 feature
2556 config CPU_MIPSR2_IRQ_VI
2560 # Extended interrupt mode is an R2 feature
2562 config CPU_MIPSR2_IRQ_EI
2567 depends on !CPU_R3000
2573 config CPU_DADDI_WORKAROUNDS
2576 config CPU_R4000_WORKAROUNDS
2578 select CPU_R4400_WORKAROUNDS
2580 config CPU_R4400_WORKAROUNDS
2583 config MIPS_ASID_SHIFT
2585 default 6 if CPU_R3000 || CPU_TX39XX
2586 default 4 if CPU_R8000
2589 config MIPS_ASID_BITS
2591 default 0 if MIPS_ASID_BITS_VARIABLE
2592 default 6 if CPU_R3000 || CPU_TX39XX
2595 config MIPS_ASID_BITS_VARIABLE
2598 config MIPS_CRC_SUPPORT
2602 # - Highmem only makes sense for the 32-bit kernel.
2603 # - The current highmem code will only work properly on physically indexed
2604 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2605 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2606 # moment we protect the user and offer the highmem option only on machines
2607 # where it's known to be safe. This will not offer highmem on a few systems
2608 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2609 # indexed CPUs but we're playing safe.
2610 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2611 # know they might have memory configurations that could make use of highmem
2615 bool "High Memory Support"
2616 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2618 config CPU_SUPPORTS_HIGHMEM
2621 config SYS_SUPPORTS_HIGHMEM
2624 config SYS_SUPPORTS_SMARTMIPS
2627 config SYS_SUPPORTS_MICROMIPS
2630 config SYS_SUPPORTS_MIPS16
2633 This option must be set if a kernel might be executed on a MIPS16-
2634 enabled CPU even if MIPS16 is not actually being used. In other
2635 words, it makes the kernel MIPS16-tolerant.
2637 config CPU_SUPPORTS_MSA
2640 config ARCH_FLATMEM_ENABLE
2642 depends on !NUMA && !CPU_LOONGSON2
2644 config ARCH_DISCONTIGMEM_ENABLE
2646 default y if SGI_IP27
2648 Say Y to support efficient handling of discontiguous physical memory,
2649 for architectures which are either NUMA (Non-Uniform Memory Access)
2650 or have huge holes in the physical address space for other reasons.
2651 See <file:Documentation/vm/numa.rst> for more.
2653 config ARCH_SPARSEMEM_ENABLE
2655 select SPARSEMEM_STATIC
2659 depends on SYS_SUPPORTS_NUMA
2661 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2662 Access). This option improves performance on systems with more
2663 than two nodes; on two node systems it is generally better to
2664 leave it disabled; on single node systems disable this option
2667 config SYS_SUPPORTS_NUMA
2671 bool "Relocatable kernel"
2672 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6 || CAVIUM_OCTEON_SOC)
2674 This builds a kernel image that retains relocation information
2675 so it can be loaded someplace besides the default 1MB.
2676 The relocations make the kernel binary about 15% larger,
2677 but are discarded at runtime
2679 config RELOCATION_TABLE_SIZE
2680 hex "Relocation table size"
2681 depends on RELOCATABLE
2682 range 0x0 0x01000000
2683 default "0x00100000"
2685 A table of relocation data will be appended to the kernel binary
2686 and parsed at boot to fix up the relocated kernel.
2688 This option allows the amount of space reserved for the table to be
2689 adjusted, although the default of 1Mb should be ok in most cases.
2691 The build will fail and a valid size suggested if this is too small.
2693 If unsure, leave at the default value.
2695 config RANDOMIZE_BASE
2696 bool "Randomize the address of the kernel image"
2697 depends on RELOCATABLE
2699 Randomizes the physical and virtual address at which the
2700 kernel image is loaded, as a security feature that
2701 deters exploit attempts relying on knowledge of the location
2702 of kernel internals.
2704 Entropy is generated using any coprocessor 0 registers available.
2706 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2710 config RANDOMIZE_BASE_MAX_OFFSET
2711 hex "Maximum kASLR offset" if EXPERT
2712 depends on RANDOMIZE_BASE
2713 range 0x0 0x40000000 if EVA || 64BIT
2714 range 0x0 0x08000000
2715 default "0x01000000"
2717 When kASLR is active, this provides the maximum offset that will
2718 be applied to the kernel image. It should be set according to the
2719 amount of physical RAM available in the target system minus
2720 PHYSICAL_START and must be a power of 2.
2722 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2723 EVA or 64-bit. The default is 16Mb.
2728 depends on NEED_MULTIPLE_NODES
2730 config HW_PERF_EVENTS
2731 bool "Enable hardware performance counter support for perf events"
2732 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2735 Enable hardware performance counter support for perf events. If
2736 disabled, perf events will use software events only.
2739 bool "Multi-Processing support"
2740 depends on SYS_SUPPORTS_SMP
2742 This enables support for systems with more than one CPU. If you have
2743 a system with only one CPU, say N. If you have a system with more
2744 than one CPU, say Y.
2746 If you say N here, the kernel will run on uni- and multiprocessor
2747 machines, but will use only one CPU of a multiprocessor machine. If
2748 you say Y here, the kernel will run on many, but not all,
2749 uniprocessor machines. On a uniprocessor machine, the kernel
2750 will run faster if you say N here.
2752 People using multiprocessor machines who say Y here should also say
2753 Y to "Enhanced Real Time Clock Support", below.
2755 See also the SMP-HOWTO available at
2756 <http://www.tldp.org/docs.html#howto>.
2758 If you don't know what to do here, say N.
2761 bool "Support for hot-pluggable CPUs"
2762 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2764 Say Y here to allow turning CPUs off and on. CPUs can be
2765 controlled through /sys/devices/system/cpu.
2766 (Note: power management support will enable this option
2767 automatically on SMP systems. )
2768 Say N if you want to disable CPU hotplug.
2773 config SYS_SUPPORTS_MIPS_CMP
2776 config SYS_SUPPORTS_MIPS_CPS
2779 config SYS_SUPPORTS_SMP
2782 config NR_CPUS_DEFAULT_4
2785 config NR_CPUS_DEFAULT_8
2788 config NR_CPUS_DEFAULT_16
2791 config NR_CPUS_DEFAULT_32
2794 config NR_CPUS_DEFAULT_64
2798 int "Maximum number of CPUs (2-256)"
2801 default "4" if NR_CPUS_DEFAULT_4
2802 default "8" if NR_CPUS_DEFAULT_8
2803 default "16" if NR_CPUS_DEFAULT_16
2804 default "32" if NR_CPUS_DEFAULT_32
2805 default "64" if NR_CPUS_DEFAULT_64
2807 This allows you to specify the maximum number of CPUs which this
2808 kernel will support. The maximum supported value is 32 for 32-bit
2809 kernel and 64 for 64-bit kernels; the minimum value which makes
2810 sense is 1 for Qemu (useful only for kernel debugging purposes)
2811 and 2 for all others.
2813 This is purely to save memory - each supported CPU adds
2814 approximately eight kilobytes to the kernel image. For best
2815 performance should round up your number of processors to the next
2818 config MIPS_PERF_SHARED_TC_COUNTERS
2821 config MIPS_NR_CPU_NR_MAP_1024
2824 config MIPS_NR_CPU_NR_MAP
2827 default 1024 if MIPS_NR_CPU_NR_MAP_1024
2828 default NR_CPUS if !MIPS_NR_CPU_NR_MAP_1024
2831 # Timer Interrupt Frequency Configuration
2835 prompt "Timer frequency"
2838 Allows the configuration of the timer frequency.
2841 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2844 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2847 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2850 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2853 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2856 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2859 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2862 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2866 config SYS_SUPPORTS_24HZ
2869 config SYS_SUPPORTS_48HZ
2872 config SYS_SUPPORTS_100HZ
2875 config SYS_SUPPORTS_128HZ
2878 config SYS_SUPPORTS_250HZ
2881 config SYS_SUPPORTS_256HZ
2884 config SYS_SUPPORTS_1000HZ
2887 config SYS_SUPPORTS_1024HZ
2890 config SYS_SUPPORTS_ARBIT_HZ
2892 default y if !SYS_SUPPORTS_24HZ && \
2893 !SYS_SUPPORTS_48HZ && \
2894 !SYS_SUPPORTS_100HZ && \
2895 !SYS_SUPPORTS_128HZ && \
2896 !SYS_SUPPORTS_250HZ && \
2897 !SYS_SUPPORTS_256HZ && \
2898 !SYS_SUPPORTS_1000HZ && \
2899 !SYS_SUPPORTS_1024HZ
2905 default 100 if HZ_100
2906 default 128 if HZ_128
2907 default 250 if HZ_250
2908 default 256 if HZ_256
2909 default 1000 if HZ_1000
2910 default 1024 if HZ_1024
2913 def_bool HIGH_RES_TIMERS
2916 bool "Kexec system call"
2919 kexec is a system call that implements the ability to shutdown your
2920 current kernel, and to start another kernel. It is like a reboot
2921 but it is independent of the system firmware. And like a reboot
2922 you can start any kernel with it, not just Linux.
2924 The name comes from the similarity to the exec system call.
2926 It is an ongoing process to be certain the hardware in a machine
2927 is properly shutdown, so do not be surprised if this code does not
2928 initially work for you. As of this writing the exact hardware
2929 interface is strongly in flux, so no good recommendation can be
2933 bool "Kernel crash dumps"
2935 Generate crash dump after being started by kexec.
2936 This should be normally only set in special crash dump kernels
2937 which are loaded in the main kernel with kexec-tools into
2938 a specially reserved region and then later executed after
2939 a crash by kdump/kexec. The crash dump kernel must be compiled
2940 to a memory address not used by the main kernel or firmware using
2943 config PHYSICAL_START
2944 hex "Physical address where the kernel is loaded"
2945 default "0xffffffff84000000"
2946 depends on CRASH_DUMP
2948 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2949 If you plan to use kernel for capturing the crash dump change
2950 this value to start of the reserved region (the "X" value as
2951 specified in the "crashkernel=YM@XM" command line boot parameter
2952 passed to the panic-ed kernel).
2955 bool "Enable seccomp to safely compute untrusted bytecode"
2959 This kernel feature is useful for number crunching applications
2960 that may need to compute untrusted bytecode during their
2961 execution. By using pipes or other transports made available to
2962 the process as file descriptors supporting the read/write
2963 syscalls, it's possible to isolate those applications in
2964 their own address space using seccomp. Once seccomp is
2965 enabled via /proc/<pid>/seccomp, it cannot be disabled
2966 and the task is only allowed to execute a few safe syscalls
2967 defined by each seccomp mode.
2969 If unsure, say Y. Only embedded should say N here.
2971 config MIPS_O32_FP64_SUPPORT
2972 bool "Support for O32 binaries using 64-bit FP" if !CPU_MIPSR6
2973 depends on 32BIT || MIPS32_O32
2975 When this is enabled, the kernel will support use of 64-bit floating
2976 point registers with binaries using the O32 ABI along with the
2977 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2978 32-bit MIPS systems this support is at the cost of increasing the
2979 size and complexity of the compiled FPU emulator. Thus if you are
2980 running a MIPS32 system and know that none of your userland binaries
2981 will require 64-bit floating point, you may wish to reduce the size
2982 of your kernel & potentially improve FP emulation performance by
2985 Although binutils currently supports use of this flag the details
2986 concerning its effect upon the O32 ABI in userland are still being
2987 worked on. In order to avoid userland becoming dependant upon current
2988 behaviour before the details have been finalised, this option should
2989 be considered experimental and only enabled by those working upon
2997 select OF_EARLY_FLATTREE
3007 prompt "Kernel appended dtb support" if USE_OF
3008 default MIPS_NO_APPENDED_DTB
3010 config MIPS_NO_APPENDED_DTB
3013 Do not enable appended dtb support.
3015 config MIPS_ELF_APPENDED_DTB
3018 With this option, the boot code will look for a device tree binary
3019 DTB) included in the vmlinux ELF section .appended_dtb. By default
3020 it is empty and the DTB can be appended using binutils command
3023 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
3025 This is meant as a backward compatiblity convenience for those
3026 systems with a bootloader that can't be upgraded to accommodate
3027 the documented boot protocol using a device tree.
3029 config MIPS_RAW_APPENDED_DTB
3030 bool "vmlinux.bin or vmlinuz.bin"
3032 With this option, the boot code will look for a device tree binary
3033 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
3034 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
3036 This is meant as a backward compatibility convenience for those
3037 systems with a bootloader that can't be upgraded to accommodate
3038 the documented boot protocol using a device tree.
3040 Beware that there is very little in terms of protection against
3041 this option being confused by leftover garbage in memory that might
3042 look like a DTB header after a reboot if no actual DTB is appended
3043 to vmlinux.bin. Do not leave this option active in a production kernel
3044 if you don't intend to always append a DTB.
3048 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
3049 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
3052 default MIPS_CMDLINE_FROM_BOOTLOADER
3054 config MIPS_CMDLINE_FROM_DTB
3056 bool "Dtb kernel arguments if available"
3058 config MIPS_CMDLINE_DTB_EXTEND
3060 bool "Extend dtb kernel arguments with bootloader arguments"
3062 config MIPS_CMDLINE_FROM_BOOTLOADER
3063 bool "Bootloader kernel arguments if available"
3065 config MIPS_CMDLINE_BUILTIN_EXTEND
3066 depends on CMDLINE_BOOL
3067 bool "Extend builtin kernel arguments with bootloader arguments"
3072 config LOCKDEP_SUPPORT
3076 config STACKTRACE_SUPPORT
3080 config HAVE_LATENCYTOP_SUPPORT
3084 config PGTABLE_LEVELS
3086 default 4 if PAGE_SIZE_4KB && MIPS_VA_BITS_48
3087 default 3 if 64BIT && !PAGE_SIZE_64KB
3090 config MIPS_AUTO_PFN_OFFSET
3093 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3095 config PCI_DRIVERS_GENERIC
3096 select PCI_DOMAINS_GENERIC if PCI
3099 config PCI_DRIVERS_LEGACY
3100 def_bool !PCI_DRIVERS_GENERIC
3101 select NO_GENERIC_PCI_IOPORT_MAP
3102 select PCI_DOMAINS if PCI
3105 # ISA support is now enabled via select. Too many systems still have the one
3106 # or other ISA chip on the board that users don't know about so don't expect
3107 # users to choose the right thing ...
3113 bool "TURBOchannel support"
3114 depends on MACH_DECSTATION
3116 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3117 processors. TURBOchannel programming specifications are available
3119 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3121 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3122 Linux driver support status is documented at:
3123 <http://www.linux-mips.org/wiki/DECstation>
3129 config ARCH_MMAP_RND_BITS_MIN
3133 config ARCH_MMAP_RND_BITS_MAX
3137 config ARCH_MMAP_RND_COMPAT_BITS_MIN
3140 config ARCH_MMAP_RND_COMPAT_BITS_MAX
3147 select MIPS_EXTERNAL_TIMER
3160 config MIPS32_COMPAT
3166 config SYSVIPC_COMPAT
3170 bool "Kernel support for o32 binaries"
3172 select ARCH_WANT_OLD_COMPAT_IPC
3174 select MIPS32_COMPAT
3175 select SYSVIPC_COMPAT if SYSVIPC
3177 Select this option if you want to run o32 binaries. These are pure
3178 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3179 existing binaries are in this format.
3184 bool "Kernel support for n32 binaries"
3186 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3188 select MIPS32_COMPAT
3189 select SYSVIPC_COMPAT if SYSVIPC
3191 Select this option if you want to run n32 binaries. These are
3192 64-bit binaries using 32-bit quantities for addressing and certain
3193 data that would normally be 64-bit. They are used in special
3200 default y if MIPS32_O32 || MIPS32_N32
3203 menu "Power management options"
3205 config ARCH_HIBERNATION_POSSIBLE
3207 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3209 config ARCH_SUSPEND_POSSIBLE
3211 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3213 source "kernel/power/Kconfig"
3217 config MIPS_EXTERNAL_TIMER
3220 menu "CPU Power Management"
3222 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3223 source "drivers/cpufreq/Kconfig"
3226 source "drivers/cpuidle/Kconfig"
3230 source "drivers/firmware/Kconfig"
3232 source "arch/mips/kvm/Kconfig"