4 select ARCH_MIGHT_HAVE_PC_PARPORT
5 select ARCH_MIGHT_HAVE_PC_SERIO
6 select HAVE_CONTEXT_TRACKING
7 select HAVE_GENERIC_DMA_COHERENT
10 select HAVE_PERF_EVENTS
11 select PERF_USE_VMALLOC
13 select HAVE_ARCH_SECCOMP_FILTER
14 select HAVE_ARCH_TRACEHOOK
15 select HAVE_BPF_JIT if !CPU_MICROMIPS
16 select ARCH_HAVE_CUSTOM_GPIO_H
17 select HAVE_FUNCTION_TRACER
18 select HAVE_DYNAMIC_FTRACE
19 select HAVE_FTRACE_MCOUNT_RECORD
20 select HAVE_C_RECORDMCOUNT
21 select HAVE_FUNCTION_GRAPH_TRACER
23 select HAVE_KRETPROBES
24 select HAVE_SYSCALL_TRACEPOINTS
25 select HAVE_DEBUG_KMEMLEAK
26 select HAVE_SYSCALL_TRACEPOINTS
27 select ARCH_HAS_ELF_RANDOMIZE
28 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
29 select RTC_LIB if !MACH_LOONGSON
30 select GENERIC_ATOMIC64 if !64BIT
31 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
33 select HAVE_DMA_CONTIGUOUS
34 select HAVE_DMA_API_DEBUG
35 select GENERIC_IRQ_PROBE
36 select GENERIC_IRQ_SHOW
37 select GENERIC_PCI_IOMAP
38 select HAVE_ARCH_JUMP_LABEL
39 select ARCH_WANT_IPC_PARSE_VERSION
40 select IRQ_FORCED_THREADING
42 select HAVE_MEMBLOCK_NODE_MAP
43 select ARCH_DISCARD_MEMBLOCK
44 select GENERIC_SMP_IDLE_THREAD
45 select BUILDTIME_EXTABLE_SORT
46 select GENERIC_CLOCKEVENTS
47 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
48 select GENERIC_CMOS_UPDATE
49 select HAVE_MOD_ARCH_SPECIFIC
51 select MODULES_USE_ELF_REL if MODULES
52 select MODULES_USE_ELF_RELA if MODULES && 64BIT
53 select CLONE_BACKWARDS
54 select HAVE_DEBUG_STACKOVERFLOW
55 select HAVE_CC_STACKPROTECTOR
56 select CPU_PM if CPU_IDLE
57 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
58 select ARCH_BINFMT_ELF_STATE
59 select SYSCTL_EXCEPTION_TRACE
60 select HAVE_VIRT_CPU_ACCOUNTING_GEN
61 select HAVE_IRQ_TIME_ACCOUNTING
63 menu "Machine selection"
70 bool "Alchemy processor based machines"
71 select ARCH_PHYS_ADDR_T_64BIT
75 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
76 select SYS_HAS_CPU_MIPS32_R1
77 select SYS_SUPPORTS_32BIT_KERNEL
78 select SYS_SUPPORTS_APM_EMULATION
79 select ARCH_REQUIRE_GPIOLIB
80 select SYS_SUPPORTS_ZBOOT
84 bool "Texas Instruments AR7"
86 select DMA_NONCOHERENT
92 select SYS_HAS_CPU_MIPS32_R1
93 select SYS_HAS_EARLY_PRINTK
94 select SYS_SUPPORTS_32BIT_KERNEL
95 select SYS_SUPPORTS_LITTLE_ENDIAN
96 select SYS_SUPPORTS_MIPS16
97 select SYS_SUPPORTS_ZBOOT_UART16550
98 select ARCH_REQUIRE_GPIOLIB
102 Support for the Texas Instruments AR7 System-on-a-Chip
103 family: TNETD7100, 7200 and 7300.
106 bool "Atheros AR231x/AR531x SoC support"
109 select DMA_NONCOHERENT
112 select SYS_HAS_CPU_MIPS32_R1
113 select SYS_SUPPORTS_BIG_ENDIAN
114 select SYS_SUPPORTS_32BIT_KERNEL
115 select SYS_HAS_EARLY_PRINTK
117 Support for Atheros AR231x and Atheros AR531x based boards
120 bool "Atheros AR71XX/AR724X/AR913X based boards"
121 select ARCH_REQUIRE_GPIOLIB
125 select DMA_NONCOHERENT
130 select SYS_HAS_CPU_MIPS32_R2
131 select SYS_HAS_EARLY_PRINTK
132 select SYS_SUPPORTS_32BIT_KERNEL
133 select SYS_SUPPORTS_BIG_ENDIAN
134 select SYS_SUPPORTS_MIPS16
136 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
139 bool "Broadcom Generic BMIPS kernel"
141 select NO_EXCEPT_FILL
147 select BCM7038_L1_IRQ
148 select BCM7120_L2_IRQ
149 select BRCMSTB_L2_IRQ
151 select RAW_IRQ_ACCESSORS
152 select DMA_NONCOHERENT
153 select SYS_SUPPORTS_32BIT_KERNEL
154 select SYS_SUPPORTS_LITTLE_ENDIAN
155 select SYS_SUPPORTS_BIG_ENDIAN
156 select SYS_SUPPORTS_HIGHMEM
157 select SYS_HAS_CPU_BMIPS32_3300
158 select SYS_HAS_CPU_BMIPS4350
159 select SYS_HAS_CPU_BMIPS4380
160 select SYS_HAS_CPU_BMIPS5000
162 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
163 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
164 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
165 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
167 Build a generic DT-based kernel image that boots on select
168 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
169 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
170 must be set appropriately for your board.
173 bool "Broadcom BCM47XX based boards"
174 select ARCH_WANT_OPTIONAL_GPIOLIB
178 select DMA_NONCOHERENT
181 select SYS_HAS_CPU_MIPS32_R1
182 select NO_EXCEPT_FILL
183 select SYS_SUPPORTS_32BIT_KERNEL
184 select SYS_SUPPORTS_LITTLE_ENDIAN
185 select SYS_SUPPORTS_MIPS16
186 select SYS_HAS_EARLY_PRINTK
187 select USE_GENERIC_EARLY_PRINTK_8250
189 select LEDS_GPIO_REGISTER
191 Support for BCM47XX based boards
194 bool "Broadcom BCM63XX based boards"
199 select DMA_NONCOHERENT
201 select SYS_SUPPORTS_32BIT_KERNEL
202 select SYS_SUPPORTS_BIG_ENDIAN
203 select SYS_HAS_EARLY_PRINTK
205 select ARCH_REQUIRE_GPIOLIB
207 select MIPS_L1_CACHE_SHIFT_4
209 Support for BCM63XX based boards
216 select DMA_NONCOHERENT
222 select PCI_GT64XXX_PCI0
224 select SYS_HAS_CPU_NEVADA
225 select SYS_HAS_EARLY_PRINTK
226 select SYS_SUPPORTS_32BIT_KERNEL
227 select SYS_SUPPORTS_64BIT_KERNEL
228 select SYS_SUPPORTS_LITTLE_ENDIAN
229 select USE_GENERIC_EARLY_PRINTK_8250
231 config MACH_DECSTATION
235 select CEVT_R4K if CPU_R4X00
237 select CSRC_R4K if CPU_R4X00
238 select CPU_DADDI_WORKAROUNDS if 64BIT
239 select CPU_R4000_WORKAROUNDS if 64BIT
240 select CPU_R4400_WORKAROUNDS if 64BIT
241 select DMA_NONCOHERENT
244 select SYS_HAS_CPU_R3000
245 select SYS_HAS_CPU_R4X00
246 select SYS_SUPPORTS_32BIT_KERNEL
247 select SYS_SUPPORTS_64BIT_KERNEL
248 select SYS_SUPPORTS_LITTLE_ENDIAN
249 select SYS_SUPPORTS_128HZ
250 select SYS_SUPPORTS_256HZ
251 select SYS_SUPPORTS_1024HZ
252 select MIPS_L1_CACHE_SHIFT_4
254 This enables support for DEC's MIPS based workstations. For details
255 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
256 DECstation porting pages on <http://decstation.unix-ag.org/>.
258 If you have one of the following DECstation Models you definitely
259 want to choose R4xx0 for the CPU Type:
266 otherwise choose R3000.
269 bool "Jazz family of machines"
272 select ARCH_MAY_HAVE_PC_FDC
275 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
276 select GENERIC_ISA_DMA
277 select HAVE_PCSPKR_PLATFORM
282 select SYS_HAS_CPU_R4X00
283 select SYS_SUPPORTS_32BIT_KERNEL
284 select SYS_SUPPORTS_64BIT_KERNEL
285 select SYS_SUPPORTS_100HZ
287 This a family of machines based on the MIPS R4030 chipset which was
288 used by several vendors to build RISC/os and Windows NT workstations.
289 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
290 Olivetti M700-10 workstations.
293 bool "Ingenic SoC based machines"
294 select SYS_SUPPORTS_32BIT_KERNEL
295 select SYS_SUPPORTS_LITTLE_ENDIAN
296 select SYS_SUPPORTS_ZBOOT_UART16550
297 select DMA_NONCOHERENT
299 select ARCH_REQUIRE_GPIOLIB
301 select GENERIC_IRQ_CHIP
307 bool "Lantiq based platforms"
308 select DMA_NONCOHERENT
312 select SYS_HAS_CPU_MIPS32_R1
313 select SYS_HAS_CPU_MIPS32_R2
314 select SYS_SUPPORTS_BIG_ENDIAN
315 select SYS_SUPPORTS_32BIT_KERNEL
316 select SYS_SUPPORTS_MIPS16
317 select SYS_SUPPORTS_MULTITHREADING
318 select SYS_HAS_EARLY_PRINTK
319 select ARCH_REQUIRE_GPIOLIB
322 select HAVE_MACH_CLKDEV
326 select PINCTRL_LANTIQ
327 select ARCH_HAS_RESET_CONTROLLER
328 select RESET_CONTROLLER
331 bool "LASAT Networks platforms"
335 select DMA_NONCOHERENT
336 select SYS_HAS_EARLY_PRINTK
339 select PCI_GT64XXX_PCI0
341 select R5000_CPU_SCACHE
342 select SYS_HAS_CPU_R5000
343 select SYS_SUPPORTS_32BIT_KERNEL
344 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
345 select SYS_SUPPORTS_LITTLE_ENDIAN
348 bool "Loongson family of machines"
349 select SYS_SUPPORTS_ZBOOT
351 This enables the support of Loongson family of machines.
353 Loongson is a family of general-purpose MIPS-compatible CPUs.
354 developed at Institute of Computing Technology (ICT),
355 Chinese Academy of Sciences (CAS) in the People's Republic
356 of China. The chief architect is Professor Weiwu Hu.
358 config MACH_LOONGSON1
359 bool "Loongson 1 family of machines"
360 select SYS_SUPPORTS_ZBOOT
362 This enables support for the Loongson 1 based machines.
364 Loongson 1 is a family of 32-bit MIPS-compatible SoCs developed by
365 the ICT (Institute of Computing Technology) and the Chinese Academy
368 config MACH_PISTACHIO
369 bool "IMG Pistachio SoC based boards"
370 select ARCH_REQUIRE_GPIOLIB
374 select CLKSRC_MIPS_GIC
377 select DMA_MAYBE_COHERENT
381 select MIPS_CPU_SCACHE
385 select SYS_HAS_CPU_MIPS32_R2
386 select SYS_SUPPORTS_32BIT_KERNEL
387 select SYS_SUPPORTS_LITTLE_ENDIAN
388 select SYS_SUPPORTS_MIPS_CPS
389 select SYS_SUPPORTS_MULTITHREADING
390 select SYS_SUPPORTS_ZBOOT
391 select SYS_HAS_EARLY_PRINTK
392 select USE_GENERIC_EARLY_PRINTK_8250
395 This enables support for the IMG Pistachio SoC platform.
398 bool "MIPS Malta board"
399 select ARCH_MAY_HAVE_PC_FDC
404 select CLKSRC_MIPS_GIC
405 select DMA_MAYBE_COHERENT
406 select GENERIC_ISA_DMA
407 select HAVE_PCSPKR_PLATFORM
414 select MIPS_CPU_SCACHE
415 select MIPS_L1_CACHE_SHIFT_6
416 select PCI_GT64XXX_PCI0
419 select SYS_HAS_CPU_MIPS32_R1
420 select SYS_HAS_CPU_MIPS32_R2
421 select SYS_HAS_CPU_MIPS32_R3_5
422 select SYS_HAS_CPU_MIPS32_R5
423 select SYS_HAS_CPU_MIPS32_R6
424 select SYS_HAS_CPU_MIPS64_R1
425 select SYS_HAS_CPU_MIPS64_R2
426 select SYS_HAS_CPU_MIPS64_R6
427 select SYS_HAS_CPU_NEVADA
428 select SYS_HAS_CPU_RM7000
429 select SYS_SUPPORTS_32BIT_KERNEL
430 select SYS_SUPPORTS_64BIT_KERNEL
431 select SYS_SUPPORTS_BIG_ENDIAN
432 select SYS_SUPPORTS_HIGHMEM
433 select SYS_SUPPORTS_LITTLE_ENDIAN
434 select SYS_SUPPORTS_MICROMIPS
435 select SYS_SUPPORTS_MIPS_CMP
436 select SYS_SUPPORTS_MIPS_CPS
437 select SYS_SUPPORTS_MIPS16
438 select SYS_SUPPORTS_MULTITHREADING
439 select SYS_SUPPORTS_SMARTMIPS
440 select SYS_SUPPORTS_ZBOOT
442 This enables support for the MIPS Technologies Malta evaluation
446 bool "MIPS SEAD3 board"
452 select CLKSRC_MIPS_GIC
453 select CPU_MIPSR2_IRQ_VI
454 select CPU_MIPSR2_IRQ_EI
455 select DMA_NONCOHERENT
460 select SYS_HAS_CPU_MIPS32_R1
461 select SYS_HAS_CPU_MIPS32_R2
462 select SYS_HAS_CPU_MIPS64_R1
463 select SYS_HAS_EARLY_PRINTK
464 select SYS_SUPPORTS_32BIT_KERNEL
465 select SYS_SUPPORTS_64BIT_KERNEL
466 select SYS_SUPPORTS_BIG_ENDIAN
467 select SYS_SUPPORTS_LITTLE_ENDIAN
468 select SYS_SUPPORTS_SMARTMIPS
469 select SYS_SUPPORTS_MICROMIPS
470 select SYS_SUPPORTS_MIPS16
471 select USB_EHCI_BIG_ENDIAN_DESC
472 select USB_EHCI_BIG_ENDIAN_MMIO
475 This enables support for the MIPS Technologies SEAD3 evaluation
479 bool "NEC EMMA2RH Mark-eins board"
483 This enables support for the NEC Electronics Mark-eins boards.
486 bool "NEC VR4100 series based machines"
489 select SYS_HAS_CPU_VR41XX
490 select SYS_SUPPORTS_MIPS16
491 select ARCH_REQUIRE_GPIOLIB
494 bool "NXP STB220 board"
497 Support for NXP Semiconductors STB220 Development Board.
504 Support for NXP Semiconductors STB225 Development Board.
507 bool "PMC-Sierra MSP chipsets"
510 select DMA_NONCOHERENT
512 select NO_EXCEPT_FILL
514 select SYS_HAS_CPU_MIPS32_R1
515 select SYS_HAS_CPU_MIPS32_R2
516 select SYS_SUPPORTS_32BIT_KERNEL
517 select SYS_SUPPORTS_BIG_ENDIAN
518 select SYS_SUPPORTS_MIPS16
521 select SERIAL_8250_CONSOLE
522 select USB_EHCI_BIG_ENDIAN_MMIO
523 select USB_EHCI_BIG_ENDIAN_DESC
525 This adds support for the PMC-Sierra family of Multi-Service
526 Processor System-On-A-Chips. These parts include a number
527 of integrated peripherals, interfaces and DSPs in addition to
528 a variety of MIPS cores.
531 bool "Ralink based machines"
535 select DMA_NONCOHERENT
538 select SYS_HAS_CPU_MIPS32_R1
539 select SYS_HAS_CPU_MIPS32_R2
540 select SYS_SUPPORTS_32BIT_KERNEL
541 select SYS_SUPPORTS_LITTLE_ENDIAN
542 select SYS_SUPPORTS_MIPS16
543 select SYS_HAS_EARLY_PRINTK
544 select HAVE_MACH_CLKDEV
546 select ARCH_HAS_RESET_CONTROLLER
547 select RESET_CONTROLLER
550 bool "SGI IP22 (Indy/Indigo2)"
556 select DEFAULT_SGI_PARTITION
557 select DMA_NONCOHERENT
561 select IP22_CPU_SCACHE
563 select GENERIC_ISA_DMA_SUPPORT_BROKEN
565 select SGI_HAS_INDYDOG
571 select SYS_HAS_CPU_R4X00
572 select SYS_HAS_CPU_R5000
574 # Disable EARLY_PRINTK for now since it leads to overwritten prom
575 # memory during early boot on some machines.
577 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
578 # for a more details discussion
580 # select SYS_HAS_EARLY_PRINTK
581 select SYS_SUPPORTS_32BIT_KERNEL
582 select SYS_SUPPORTS_64BIT_KERNEL
583 select SYS_SUPPORTS_BIG_ENDIAN
584 select MIPS_L1_CACHE_SHIFT_7
586 This are the SGI Indy, Challenge S and Indigo2, as well as certain
587 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
588 that runs on these, say Y here.
591 bool "SGI IP27 (Origin200/2000)"
595 select DEFAULT_SGI_PARTITION
597 select SYS_HAS_EARLY_PRINTK
599 select NR_CPUS_DEFAULT_64
600 select SYS_HAS_CPU_R10000
601 select SYS_SUPPORTS_64BIT_KERNEL
602 select SYS_SUPPORTS_BIG_ENDIAN
603 select SYS_SUPPORTS_NUMA
604 select SYS_SUPPORTS_SMP
605 select MIPS_L1_CACHE_SHIFT_7
607 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
608 workstations. To compile a Linux kernel that runs on these, say Y
612 bool "SGI IP28 (Indigo2 R10k)"
618 select DEFAULT_SGI_PARTITION
619 select DMA_NONCOHERENT
620 select GENERIC_ISA_DMA_SUPPORT_BROKEN
626 select SGI_HAS_INDYDOG
632 select SYS_HAS_CPU_R10000
634 # Disable EARLY_PRINTK for now since it leads to overwritten prom
635 # memory during early boot on some machines.
637 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
638 # for a more details discussion
640 # select SYS_HAS_EARLY_PRINTK
641 select SYS_SUPPORTS_64BIT_KERNEL
642 select SYS_SUPPORTS_BIG_ENDIAN
643 select MIPS_L1_CACHE_SHIFT_7
645 This is the SGI Indigo2 with R10000 processor. To compile a Linux
646 kernel that runs on these, say Y here.
655 select DMA_NONCOHERENT
658 select R5000_CPU_SCACHE
659 select RM7000_CPU_SCACHE
660 select SYS_HAS_CPU_R5000
661 select SYS_HAS_CPU_R10000 if BROKEN
662 select SYS_HAS_CPU_RM7000
663 select SYS_HAS_CPU_NEVADA
664 select SYS_SUPPORTS_64BIT_KERNEL
665 select SYS_SUPPORTS_BIG_ENDIAN
667 If you want this kernel to run on SGI O2 workstation, say Y here.
670 bool "Sibyte BCM91120C-CRhine"
673 select SIBYTE_BCM1120
675 select SYS_HAS_CPU_SB1
676 select SYS_SUPPORTS_BIG_ENDIAN
677 select SYS_SUPPORTS_LITTLE_ENDIAN
680 bool "Sibyte BCM91120x-Carmel"
683 select SIBYTE_BCM1120
685 select SYS_HAS_CPU_SB1
686 select SYS_SUPPORTS_BIG_ENDIAN
687 select SYS_SUPPORTS_LITTLE_ENDIAN
690 bool "Sibyte BCM91125C-CRhone"
693 select SIBYTE_BCM1125
695 select SYS_HAS_CPU_SB1
696 select SYS_SUPPORTS_BIG_ENDIAN
697 select SYS_SUPPORTS_HIGHMEM
698 select SYS_SUPPORTS_LITTLE_ENDIAN
701 bool "Sibyte BCM91125E-Rhone"
704 select SIBYTE_BCM1125H
706 select SYS_HAS_CPU_SB1
707 select SYS_SUPPORTS_BIG_ENDIAN
708 select SYS_SUPPORTS_LITTLE_ENDIAN
711 bool "Sibyte BCM91250A-SWARM"
714 select HAVE_PATA_PLATFORM
717 select SYS_HAS_CPU_SB1
718 select SYS_SUPPORTS_BIG_ENDIAN
719 select SYS_SUPPORTS_HIGHMEM
720 select SYS_SUPPORTS_LITTLE_ENDIAN
721 select ZONE_DMA32 if 64BIT
723 config SIBYTE_LITTLESUR
724 bool "Sibyte BCM91250C2-LittleSur"
727 select HAVE_PATA_PLATFORM
730 select SYS_HAS_CPU_SB1
731 select SYS_SUPPORTS_BIG_ENDIAN
732 select SYS_SUPPORTS_HIGHMEM
733 select SYS_SUPPORTS_LITTLE_ENDIAN
735 config SIBYTE_SENTOSA
736 bool "Sibyte BCM91250E-Sentosa"
741 select SYS_HAS_CPU_SB1
742 select SYS_SUPPORTS_BIG_ENDIAN
743 select SYS_SUPPORTS_LITTLE_ENDIAN
746 bool "Sibyte BCM91480B-BigSur"
749 select NR_CPUS_DEFAULT_4
750 select SIBYTE_BCM1x80
752 select SYS_HAS_CPU_SB1
753 select SYS_SUPPORTS_BIG_ENDIAN
754 select SYS_SUPPORTS_HIGHMEM
755 select SYS_SUPPORTS_LITTLE_ENDIAN
756 select ZONE_DMA32 if 64BIT
759 bool "SNI RM200/300/400"
760 select FW_ARC if CPU_LITTLE_ENDIAN
761 select FW_ARC32 if CPU_LITTLE_ENDIAN
762 select FW_SNIPROM if CPU_BIG_ENDIAN
763 select ARCH_MAY_HAVE_PC_FDC
767 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
768 select DMA_NONCOHERENT
769 select GENERIC_ISA_DMA
770 select HAVE_PCSPKR_PLATFORM
777 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
778 select SYS_HAS_CPU_R4X00
779 select SYS_HAS_CPU_R5000
780 select SYS_HAS_CPU_R10000
781 select R5000_CPU_SCACHE
782 select SYS_HAS_EARLY_PRINTK
783 select SYS_SUPPORTS_32BIT_KERNEL
784 select SYS_SUPPORTS_64BIT_KERNEL
785 select SYS_SUPPORTS_BIG_ENDIAN
786 select SYS_SUPPORTS_HIGHMEM
787 select SYS_SUPPORTS_LITTLE_ENDIAN
789 The SNI RM200/300/400 are MIPS-based machines manufactured by
790 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
791 Technology and now in turn merged with Fujitsu. Say Y here to
792 support this machine type.
795 bool "Toshiba TX39 series based machines"
798 bool "Toshiba TX49 series based machines"
800 config MIKROTIK_RB532
801 bool "Mikrotik RB532 boards"
804 select DMA_NONCOHERENT
807 select SYS_HAS_CPU_MIPS32_R1
808 select SYS_SUPPORTS_32BIT_KERNEL
809 select SYS_SUPPORTS_LITTLE_ENDIAN
812 select ARCH_REQUIRE_GPIOLIB
813 select MIPS_L1_CACHE_SHIFT_4
815 Support the Mikrotik(tm) RouterBoard 532 series,
816 based on the IDT RC32434 SoC.
818 config CAVIUM_OCTEON_SOC
819 bool "Cavium Networks Octeon SoC based boards"
821 select ARCH_PHYS_ADDR_T_64BIT
823 select SYS_SUPPORTS_64BIT_KERNEL
824 select SYS_SUPPORTS_BIG_ENDIAN
826 select SYS_SUPPORTS_LITTLE_ENDIAN
827 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
828 select SYS_HAS_EARLY_PRINTK
829 select SYS_HAS_CPU_CAVIUM_OCTEON
834 select ARCH_REQUIRE_GPIOLIB
837 select ARCH_SPARSEMEM_ENABLE
838 select SYS_SUPPORTS_SMP
839 select NR_CPUS_DEFAULT_16
841 select MTD_COMPLEX_MAPPINGS
843 This option supports all of the Octeon reference boards from Cavium
844 Networks. It builds a kernel that dynamically determines the Octeon
845 CPU type and supports all known board reference implementations.
846 Some of the supported boards are:
853 Say Y here for most Octeon reference boards.
856 bool "Netlogic XLR/XLS based systems"
859 select SYS_HAS_CPU_XLR
860 select SYS_SUPPORTS_SMP
863 select SYS_SUPPORTS_32BIT_KERNEL
864 select SYS_SUPPORTS_64BIT_KERNEL
865 select ARCH_PHYS_ADDR_T_64BIT
866 select SYS_SUPPORTS_BIG_ENDIAN
867 select SYS_SUPPORTS_HIGHMEM
869 select NR_CPUS_DEFAULT_32
873 select ZONE_DMA32 if 64BIT
875 select SYS_HAS_EARLY_PRINTK
876 select SYS_SUPPORTS_ZBOOT
877 select SYS_SUPPORTS_ZBOOT_UART16550
879 Support for systems based on Netlogic XLR and XLS processors.
880 Say Y here if you have a XLR or XLS based board.
883 bool "Netlogic XLP based systems"
886 select SYS_HAS_CPU_XLP
887 select SYS_SUPPORTS_SMP
889 select SYS_SUPPORTS_32BIT_KERNEL
890 select SYS_SUPPORTS_64BIT_KERNEL
891 select ARCH_PHYS_ADDR_T_64BIT
892 select SYS_SUPPORTS_BIG_ENDIAN
893 select SYS_SUPPORTS_LITTLE_ENDIAN
894 select SYS_SUPPORTS_HIGHMEM
896 select NR_CPUS_DEFAULT_32
900 select ZONE_DMA32 if 64BIT
902 select SYS_HAS_EARLY_PRINTK
904 select SYS_SUPPORTS_ZBOOT
905 select SYS_SUPPORTS_ZBOOT_UART16550
907 This board is based on Netlogic XLP Processor.
908 Say Y here if you have a XLP based board.
911 bool "Para-Virtualized guest system"
915 select SYS_SUPPORTS_64BIT_KERNEL
916 select SYS_SUPPORTS_32BIT_KERNEL
917 select SYS_SUPPORTS_BIG_ENDIAN
918 select SYS_SUPPORTS_SMP
919 select NR_CPUS_DEFAULT_4
920 select SYS_HAS_EARLY_PRINTK
921 select SYS_HAS_CPU_MIPS32_R2
922 select SYS_HAS_CPU_MIPS64_R2
923 select SYS_HAS_CPU_CAVIUM_OCTEON
927 This option supports guest running under ????
931 source "arch/mips/alchemy/Kconfig"
932 source "arch/mips/ath25/Kconfig"
933 source "arch/mips/ath79/Kconfig"
934 source "arch/mips/bcm47xx/Kconfig"
935 source "arch/mips/bcm63xx/Kconfig"
936 source "arch/mips/bmips/Kconfig"
937 source "arch/mips/jazz/Kconfig"
938 source "arch/mips/jz4740/Kconfig"
939 source "arch/mips/lantiq/Kconfig"
940 source "arch/mips/lasat/Kconfig"
941 source "arch/mips/pmcs-msp71xx/Kconfig"
942 source "arch/mips/ralink/Kconfig"
943 source "arch/mips/sgi-ip27/Kconfig"
944 source "arch/mips/sibyte/Kconfig"
945 source "arch/mips/txx9/Kconfig"
946 source "arch/mips/vr41xx/Kconfig"
947 source "arch/mips/cavium-octeon/Kconfig"
948 source "arch/mips/loongson/Kconfig"
949 source "arch/mips/loongson1/Kconfig"
950 source "arch/mips/netlogic/Kconfig"
951 source "arch/mips/paravirt/Kconfig"
955 config RWSEM_GENERIC_SPINLOCK
959 config RWSEM_XCHGADD_ALGORITHM
962 config ARCH_HAS_ILOG2_U32
966 config ARCH_HAS_ILOG2_U64
970 config GENERIC_HWEIGHT
974 config GENERIC_CALIBRATE_DELAY
978 config SCHED_OMIT_FRAME_POINTER
983 # Select some configuration options automatically based on user selections.
988 config ARCH_MAY_HAVE_PC_FDC
1025 select ARCH_REQUIRE_GPIOLIB
1031 config ARCH_DMA_ADDR_T_64BIT
1032 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1034 config DMA_MAYBE_COHERENT
1035 select DMA_NONCOHERENT
1041 config DMA_NONCOHERENT
1043 select NEED_DMA_MAP_STATE
1045 config NEED_DMA_MAP_STATE
1048 config SYS_HAS_EARLY_PRINTK
1052 bool "Support for hot-pluggable CPUs"
1053 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
1055 Say Y here to allow turning CPUs off and on. CPUs can be
1056 controlled through /sys/devices/system/cpu.
1057 (Note: power management support will enable this option
1058 automatically on SMP systems. )
1059 Say N if you want to disable CPU hotplug.
1061 config SYS_SUPPORTS_HOTPLUG_CPU
1068 config MIPS_BONITO64
1083 config NO_IOPORT_MAP
1089 config GENERIC_ISA_DMA
1091 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1094 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1096 select GENERIC_ISA_DMA
1101 config HOLES_IN_ZONE
1105 # Endianness selection. Sufficiently obscure so many users don't know what to
1106 # answer,so we try hard to limit the available choices. Also the use of a
1107 # choice statement should be more obvious to the user.
1110 prompt "Endianness selection"
1112 Some MIPS machines can be configured for either little or big endian
1113 byte order. These modes require different kernels and a different
1114 Linux distribution. In general there is one preferred byteorder for a
1115 particular system but some systems are just as commonly used in the
1116 one or the other endianness.
1118 config CPU_BIG_ENDIAN
1120 depends on SYS_SUPPORTS_BIG_ENDIAN
1122 config CPU_LITTLE_ENDIAN
1123 bool "Little endian"
1124 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1131 config SYS_SUPPORTS_APM_EMULATION
1134 config SYS_SUPPORTS_BIG_ENDIAN
1137 config SYS_SUPPORTS_LITTLE_ENDIAN
1140 config SYS_SUPPORTS_HUGETLBFS
1142 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1145 config MIPS_HUGE_TLB_SUPPORT
1146 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1163 config PCI_GT64XXX_PCI0
1166 config NO_EXCEPT_FILL
1173 select DMA_NONCOHERENT
1175 select SWAP_IO_SPACE
1176 select SYS_HAS_CPU_R5500
1177 select SYS_SUPPORTS_32BIT_KERNEL
1178 select SYS_SUPPORTS_64BIT_KERNEL
1179 select SYS_SUPPORTS_BIG_ENDIAN
1186 select DMA_NONCOHERENT
1187 select SYS_HAS_CPU_MIPS32_R2
1188 select SYS_SUPPORTS_32BIT_KERNEL
1189 select SYS_SUPPORTS_LITTLE_ENDIAN
1190 select SYS_SUPPORTS_BIG_ENDIAN
1191 select SYS_SUPPORTS_MIPS16
1192 select CPU_MIPSR2_IRQ_VI
1201 config SWAP_IO_SPACE
1204 config SGI_HAS_INDYDOG
1216 config SGI_HAS_ZILOG
1219 config SGI_HAS_I8042
1222 config DEFAULT_SGI_PARTITION
1234 config MIPS_L1_CACHE_SHIFT_4
1237 config MIPS_L1_CACHE_SHIFT_5
1240 config MIPS_L1_CACHE_SHIFT_6
1243 config MIPS_L1_CACHE_SHIFT_7
1246 config MIPS_L1_CACHE_SHIFT
1248 default "7" if MIPS_L1_CACHE_SHIFT_7
1249 default "6" if MIPS_L1_CACHE_SHIFT_6
1250 default "5" if MIPS_L1_CACHE_SHIFT_5
1251 default "4" if MIPS_L1_CACHE_SHIFT_4
1254 config HAVE_STD_PC_SERIAL_PORT
1258 bool "ARC console support"
1259 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1263 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1268 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1277 menu "CPU selection"
1283 config CPU_LOONGSON3
1284 bool "Loongson 3 CPU"
1285 depends on SYS_HAS_CPU_LOONGSON3
1286 select CPU_SUPPORTS_64BIT_KERNEL
1287 select CPU_SUPPORTS_HIGHMEM
1288 select CPU_SUPPORTS_HUGEPAGES
1289 select WEAK_ORDERING
1290 select WEAK_REORDERING_BEYOND_LLSC
1291 select ARCH_REQUIRE_GPIOLIB
1293 The Loongson 3 processor implements the MIPS64R2 instruction
1294 set with many extensions.
1296 config CPU_LOONGSON2E
1298 depends on SYS_HAS_CPU_LOONGSON2E
1299 select CPU_LOONGSON2
1301 The Loongson 2E processor implements the MIPS III instruction set
1302 with many extensions.
1304 It has an internal FPGA northbridge, which is compatible to
1307 config CPU_LOONGSON2F
1309 depends on SYS_HAS_CPU_LOONGSON2F
1310 select CPU_LOONGSON2
1311 select ARCH_REQUIRE_GPIOLIB
1313 The Loongson 2F processor implements the MIPS III instruction set
1314 with many extensions.
1316 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1317 have a similar programming interface with FPGA northbridge used in
1320 config CPU_LOONGSON1B
1322 depends on SYS_HAS_CPU_LOONGSON1B
1323 select CPU_LOONGSON1
1325 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1326 release 2 instruction set.
1328 config CPU_MIPS32_R1
1329 bool "MIPS32 Release 1"
1330 depends on SYS_HAS_CPU_MIPS32_R1
1331 select CPU_HAS_PREFETCH
1332 select CPU_SUPPORTS_32BIT_KERNEL
1333 select CPU_SUPPORTS_HIGHMEM
1335 Choose this option to build a kernel for release 1 or later of the
1336 MIPS32 architecture. Most modern embedded systems with a 32-bit
1337 MIPS processor are based on a MIPS32 processor. If you know the
1338 specific type of processor in your system, choose those that one
1339 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1340 Release 2 of the MIPS32 architecture is available since several
1341 years so chances are you even have a MIPS32 Release 2 processor
1342 in which case you should choose CPU_MIPS32_R2 instead for better
1345 config CPU_MIPS32_R2
1346 bool "MIPS32 Release 2"
1347 depends on SYS_HAS_CPU_MIPS32_R2
1348 select CPU_HAS_PREFETCH
1349 select CPU_SUPPORTS_32BIT_KERNEL
1350 select CPU_SUPPORTS_HIGHMEM
1351 select CPU_SUPPORTS_MSA
1354 Choose this option to build a kernel for release 2 or later of the
1355 MIPS32 architecture. Most modern embedded systems with a 32-bit
1356 MIPS processor are based on a MIPS32 processor. If you know the
1357 specific type of processor in your system, choose those that one
1358 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1360 config CPU_MIPS32_R6
1361 bool "MIPS32 Release 6 (EXPERIMENTAL)"
1362 depends on SYS_HAS_CPU_MIPS32_R6
1363 select CPU_HAS_PREFETCH
1364 select CPU_SUPPORTS_32BIT_KERNEL
1365 select CPU_SUPPORTS_HIGHMEM
1366 select CPU_SUPPORTS_MSA
1369 select MIPS_O32_FP64_SUPPORT
1371 Choose this option to build a kernel for release 6 or later of the
1372 MIPS32 architecture. New MIPS processors, starting with the Warrior
1373 family, are based on a MIPS32r6 processor. If you own an older
1374 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1376 config CPU_MIPS64_R1
1377 bool "MIPS64 Release 1"
1378 depends on SYS_HAS_CPU_MIPS64_R1
1379 select CPU_HAS_PREFETCH
1380 select CPU_SUPPORTS_32BIT_KERNEL
1381 select CPU_SUPPORTS_64BIT_KERNEL
1382 select CPU_SUPPORTS_HIGHMEM
1383 select CPU_SUPPORTS_HUGEPAGES
1385 Choose this option to build a kernel for release 1 or later of the
1386 MIPS64 architecture. Many modern embedded systems with a 64-bit
1387 MIPS processor are based on a MIPS64 processor. If you know the
1388 specific type of processor in your system, choose those that one
1389 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1390 Release 2 of the MIPS64 architecture is available since several
1391 years so chances are you even have a MIPS64 Release 2 processor
1392 in which case you should choose CPU_MIPS64_R2 instead for better
1395 config CPU_MIPS64_R2
1396 bool "MIPS64 Release 2"
1397 depends on SYS_HAS_CPU_MIPS64_R2
1398 select CPU_HAS_PREFETCH
1399 select CPU_SUPPORTS_32BIT_KERNEL
1400 select CPU_SUPPORTS_64BIT_KERNEL
1401 select CPU_SUPPORTS_HIGHMEM
1402 select CPU_SUPPORTS_HUGEPAGES
1403 select CPU_SUPPORTS_MSA
1405 Choose this option to build a kernel for release 2 or later of the
1406 MIPS64 architecture. Many modern embedded systems with a 64-bit
1407 MIPS processor are based on a MIPS64 processor. If you know the
1408 specific type of processor in your system, choose those that one
1409 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1411 config CPU_MIPS64_R6
1412 bool "MIPS64 Release 6 (EXPERIMENTAL)"
1413 depends on SYS_HAS_CPU_MIPS64_R6
1414 select CPU_HAS_PREFETCH
1415 select CPU_SUPPORTS_32BIT_KERNEL
1416 select CPU_SUPPORTS_64BIT_KERNEL
1417 select CPU_SUPPORTS_HIGHMEM
1418 select CPU_SUPPORTS_MSA
1421 Choose this option to build a kernel for release 6 or later of the
1422 MIPS64 architecture. New MIPS processors, starting with the Warrior
1423 family, are based on a MIPS64r6 processor. If you own an older
1424 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1428 depends on SYS_HAS_CPU_R3000
1430 select CPU_SUPPORTS_32BIT_KERNEL
1431 select CPU_SUPPORTS_HIGHMEM
1433 Please make sure to pick the right CPU type. Linux/MIPS is not
1434 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1435 *not* work on R4000 machines and vice versa. However, since most
1436 of the supported machines have an R4000 (or similar) CPU, R4x00
1437 might be a safe bet. If the resulting kernel does not work,
1438 try to recompile with R3000.
1442 depends on SYS_HAS_CPU_TX39XX
1443 select CPU_SUPPORTS_32BIT_KERNEL
1447 depends on SYS_HAS_CPU_VR41XX
1448 select CPU_SUPPORTS_32BIT_KERNEL
1449 select CPU_SUPPORTS_64BIT_KERNEL
1451 The options selects support for the NEC VR4100 series of processors.
1452 Only choose this option if you have one of these processors as a
1453 kernel built with this option will not run on any other type of
1454 processor or vice versa.
1458 depends on SYS_HAS_CPU_R4300
1459 select CPU_SUPPORTS_32BIT_KERNEL
1460 select CPU_SUPPORTS_64BIT_KERNEL
1462 MIPS Technologies R4300-series processors.
1466 depends on SYS_HAS_CPU_R4X00
1467 select CPU_SUPPORTS_32BIT_KERNEL
1468 select CPU_SUPPORTS_64BIT_KERNEL
1469 select CPU_SUPPORTS_HUGEPAGES
1471 MIPS Technologies R4000-series processors other than 4300, including
1472 the R4000, R4400, R4600, and 4700.
1476 depends on SYS_HAS_CPU_TX49XX
1477 select CPU_HAS_PREFETCH
1478 select CPU_SUPPORTS_32BIT_KERNEL
1479 select CPU_SUPPORTS_64BIT_KERNEL
1480 select CPU_SUPPORTS_HUGEPAGES
1484 depends on SYS_HAS_CPU_R5000
1485 select CPU_SUPPORTS_32BIT_KERNEL
1486 select CPU_SUPPORTS_64BIT_KERNEL
1487 select CPU_SUPPORTS_HUGEPAGES
1489 MIPS Technologies R5000-series processors other than the Nevada.
1493 depends on SYS_HAS_CPU_R5432
1494 select CPU_SUPPORTS_32BIT_KERNEL
1495 select CPU_SUPPORTS_64BIT_KERNEL
1496 select CPU_SUPPORTS_HUGEPAGES
1500 depends on SYS_HAS_CPU_R5500
1501 select CPU_SUPPORTS_32BIT_KERNEL
1502 select CPU_SUPPORTS_64BIT_KERNEL
1503 select CPU_SUPPORTS_HUGEPAGES
1505 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1510 depends on SYS_HAS_CPU_R6000
1511 select CPU_SUPPORTS_32BIT_KERNEL
1513 MIPS Technologies R6000 and R6000A series processors. Note these
1514 processors are extremely rare and the support for them is incomplete.
1518 depends on SYS_HAS_CPU_NEVADA
1519 select CPU_SUPPORTS_32BIT_KERNEL
1520 select CPU_SUPPORTS_64BIT_KERNEL
1521 select CPU_SUPPORTS_HUGEPAGES
1523 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1527 depends on SYS_HAS_CPU_R8000
1528 select CPU_HAS_PREFETCH
1529 select CPU_SUPPORTS_64BIT_KERNEL
1531 MIPS Technologies R8000 processors. Note these processors are
1532 uncommon and the support for them is incomplete.
1536 depends on SYS_HAS_CPU_R10000
1537 select CPU_HAS_PREFETCH
1538 select CPU_SUPPORTS_32BIT_KERNEL
1539 select CPU_SUPPORTS_64BIT_KERNEL
1540 select CPU_SUPPORTS_HIGHMEM
1541 select CPU_SUPPORTS_HUGEPAGES
1543 MIPS Technologies R10000-series processors.
1547 depends on SYS_HAS_CPU_RM7000
1548 select CPU_HAS_PREFETCH
1549 select CPU_SUPPORTS_32BIT_KERNEL
1550 select CPU_SUPPORTS_64BIT_KERNEL
1551 select CPU_SUPPORTS_HIGHMEM
1552 select CPU_SUPPORTS_HUGEPAGES
1556 depends on SYS_HAS_CPU_SB1
1557 select CPU_SUPPORTS_32BIT_KERNEL
1558 select CPU_SUPPORTS_64BIT_KERNEL
1559 select CPU_SUPPORTS_HIGHMEM
1560 select CPU_SUPPORTS_HUGEPAGES
1561 select WEAK_ORDERING
1563 config CPU_CAVIUM_OCTEON
1564 bool "Cavium Octeon processor"
1565 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1566 select CPU_HAS_PREFETCH
1567 select CPU_SUPPORTS_64BIT_KERNEL
1568 select WEAK_ORDERING
1569 select CPU_SUPPORTS_HIGHMEM
1570 select CPU_SUPPORTS_HUGEPAGES
1571 select USB_EHCI_BIG_ENDIAN_MMIO
1572 select MIPS_L1_CACHE_SHIFT_7
1574 The Cavium Octeon processor is a highly integrated chip containing
1575 many ethernet hardware widgets for networking tasks. The processor
1576 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1577 Full details can be found at http://www.caviumnetworks.com.
1580 bool "Broadcom BMIPS"
1581 depends on SYS_HAS_CPU_BMIPS
1583 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1584 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1585 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1586 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1587 select CPU_SUPPORTS_32BIT_KERNEL
1588 select DMA_NONCOHERENT
1590 select SWAP_IO_SPACE
1591 select WEAK_ORDERING
1592 select CPU_SUPPORTS_HIGHMEM
1593 select CPU_HAS_PREFETCH
1595 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1598 bool "Netlogic XLR SoC"
1599 depends on SYS_HAS_CPU_XLR
1600 select CPU_SUPPORTS_32BIT_KERNEL
1601 select CPU_SUPPORTS_64BIT_KERNEL
1602 select CPU_SUPPORTS_HIGHMEM
1603 select CPU_SUPPORTS_HUGEPAGES
1604 select WEAK_ORDERING
1605 select WEAK_REORDERING_BEYOND_LLSC
1607 Netlogic Microsystems XLR/XLS processors.
1610 bool "Netlogic XLP SoC"
1611 depends on SYS_HAS_CPU_XLP
1612 select CPU_SUPPORTS_32BIT_KERNEL
1613 select CPU_SUPPORTS_64BIT_KERNEL
1614 select CPU_SUPPORTS_HIGHMEM
1615 select WEAK_ORDERING
1616 select WEAK_REORDERING_BEYOND_LLSC
1617 select CPU_HAS_PREFETCH
1619 select CPU_SUPPORTS_HUGEPAGES
1621 Netlogic Microsystems XLP processors.
1624 config CPU_MIPS32_3_5_FEATURES
1625 bool "MIPS32 Release 3.5 Features"
1626 depends on SYS_HAS_CPU_MIPS32_R3_5
1627 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1629 Choose this option to build a kernel for release 2 or later of the
1630 MIPS32 architecture including features from the 3.5 release such as
1631 support for Enhanced Virtual Addressing (EVA).
1633 config CPU_MIPS32_3_5_EVA
1634 bool "Enhanced Virtual Addressing (EVA)"
1635 depends on CPU_MIPS32_3_5_FEATURES
1639 Choose this option if you want to enable the Enhanced Virtual
1640 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1641 One of its primary benefits is an increase in the maximum size
1642 of lowmem (up to 3GB). If unsure, say 'N' here.
1644 config CPU_MIPS32_R5_FEATURES
1645 bool "MIPS32 Release 5 Features"
1646 depends on SYS_HAS_CPU_MIPS32_R5
1647 depends on CPU_MIPS32_R2
1649 Choose this option to build a kernel for release 2 or later of the
1650 MIPS32 architecture including features from release 5 such as
1651 support for Extended Physical Addressing (XPA).
1653 config CPU_MIPS32_R5_XPA
1654 bool "Extended Physical Addressing (XPA)"
1655 depends on CPU_MIPS32_R5_FEATURES
1657 depends on !PAGE_SIZE_4KB
1658 depends on SYS_SUPPORTS_HIGHMEM
1661 select ARCH_PHYS_ADDR_T_64BIT
1664 Choose this option if you want to enable the Extended Physical
1665 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1666 benefit is to increase physical addressing equal to or greater
1667 than 40 bits. Note that this has the side effect of turning on
1668 64-bit addressing which in turn makes the PTEs 64-bit in size.
1669 If unsure, say 'N' here.
1672 config CPU_NOP_WORKAROUNDS
1675 config CPU_JUMP_WORKAROUNDS
1678 config CPU_LOONGSON2F_WORKAROUNDS
1679 bool "Loongson 2F Workarounds"
1681 select CPU_NOP_WORKAROUNDS
1682 select CPU_JUMP_WORKAROUNDS
1684 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1685 require workarounds. Without workarounds the system may hang
1686 unexpectedly. For more information please refer to the gas
1687 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1689 Loongson 2F03 and later have fixed these issues and no workarounds
1690 are needed. The workarounds have no significant side effect on them
1691 but may decrease the performance of the system so this option should
1692 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1695 If unsure, please say Y.
1696 endif # CPU_LOONGSON2F
1698 config SYS_SUPPORTS_ZBOOT
1700 select HAVE_KERNEL_GZIP
1701 select HAVE_KERNEL_BZIP2
1702 select HAVE_KERNEL_LZ4
1703 select HAVE_KERNEL_LZMA
1704 select HAVE_KERNEL_LZO
1705 select HAVE_KERNEL_XZ
1707 config SYS_SUPPORTS_ZBOOT_UART16550
1709 select SYS_SUPPORTS_ZBOOT
1711 config CPU_LOONGSON2
1713 select CPU_SUPPORTS_32BIT_KERNEL
1714 select CPU_SUPPORTS_64BIT_KERNEL
1715 select CPU_SUPPORTS_HIGHMEM
1716 select CPU_SUPPORTS_HUGEPAGES
1718 config CPU_LOONGSON1
1722 select CPU_HAS_PREFETCH
1723 select CPU_SUPPORTS_32BIT_KERNEL
1724 select CPU_SUPPORTS_HIGHMEM
1725 select CPU_SUPPORTS_CPUFREQ
1727 config CPU_BMIPS32_3300
1728 select SMP_UP if SMP
1731 config CPU_BMIPS4350
1733 select SYS_SUPPORTS_SMP
1734 select SYS_SUPPORTS_HOTPLUG_CPU
1736 config CPU_BMIPS4380
1738 select MIPS_L1_CACHE_SHIFT_6
1739 select SYS_SUPPORTS_SMP
1740 select SYS_SUPPORTS_HOTPLUG_CPU
1742 config CPU_BMIPS5000
1744 select MIPS_CPU_SCACHE
1745 select MIPS_L1_CACHE_SHIFT_7
1746 select SYS_SUPPORTS_SMP
1747 select SYS_SUPPORTS_HOTPLUG_CPU
1749 config SYS_HAS_CPU_LOONGSON3
1751 select CPU_SUPPORTS_CPUFREQ
1753 config SYS_HAS_CPU_LOONGSON2E
1756 config SYS_HAS_CPU_LOONGSON2F
1758 select CPU_SUPPORTS_CPUFREQ
1759 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1760 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1762 config SYS_HAS_CPU_LOONGSON1B
1765 config SYS_HAS_CPU_MIPS32_R1
1768 config SYS_HAS_CPU_MIPS32_R2
1771 config SYS_HAS_CPU_MIPS32_R3_5
1774 config SYS_HAS_CPU_MIPS32_R5
1777 config SYS_HAS_CPU_MIPS32_R6
1780 config SYS_HAS_CPU_MIPS64_R1
1783 config SYS_HAS_CPU_MIPS64_R2
1786 config SYS_HAS_CPU_MIPS64_R6
1789 config SYS_HAS_CPU_R3000
1792 config SYS_HAS_CPU_TX39XX
1795 config SYS_HAS_CPU_VR41XX
1798 config SYS_HAS_CPU_R4300
1801 config SYS_HAS_CPU_R4X00
1804 config SYS_HAS_CPU_TX49XX
1807 config SYS_HAS_CPU_R5000
1810 config SYS_HAS_CPU_R5432
1813 config SYS_HAS_CPU_R5500
1816 config SYS_HAS_CPU_R6000
1819 config SYS_HAS_CPU_NEVADA
1822 config SYS_HAS_CPU_R8000
1825 config SYS_HAS_CPU_R10000
1828 config SYS_HAS_CPU_RM7000
1831 config SYS_HAS_CPU_SB1
1834 config SYS_HAS_CPU_CAVIUM_OCTEON
1837 config SYS_HAS_CPU_BMIPS
1840 config SYS_HAS_CPU_BMIPS32_3300
1842 select SYS_HAS_CPU_BMIPS
1844 config SYS_HAS_CPU_BMIPS4350
1846 select SYS_HAS_CPU_BMIPS
1848 config SYS_HAS_CPU_BMIPS4380
1850 select SYS_HAS_CPU_BMIPS
1852 config SYS_HAS_CPU_BMIPS5000
1854 select SYS_HAS_CPU_BMIPS
1856 config SYS_HAS_CPU_XLR
1859 config SYS_HAS_CPU_XLP
1862 config MIPS_MALTA_PM
1863 depends on MIPS_MALTA
1869 # CPU may reorder R->R, R->W, W->R, W->W
1870 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1872 config WEAK_ORDERING
1876 # CPU may reorder reads and writes beyond LL/SC
1877 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1879 config WEAK_REORDERING_BEYOND_LLSC
1884 # These two indicate any level of the MIPS32 and MIPS64 architecture
1888 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1892 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1895 # These two indicate the revision of the architecture, either Release 1 or Release 2
1899 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1903 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1908 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1917 config SYS_SUPPORTS_32BIT_KERNEL
1919 config SYS_SUPPORTS_64BIT_KERNEL
1921 config CPU_SUPPORTS_32BIT_KERNEL
1923 config CPU_SUPPORTS_64BIT_KERNEL
1925 config CPU_SUPPORTS_CPUFREQ
1927 config CPU_SUPPORTS_ADDRWINCFG
1929 config CPU_SUPPORTS_HUGEPAGES
1931 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1933 config MIPS_PGD_C0_CONTEXT
1935 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1938 # Set to y for ptrace access to watch registers.
1940 config HARDWARE_WATCHPOINTS
1942 default y if CPU_MIPSR1 || CPU_MIPSR2
1947 prompt "Kernel code model"
1949 You should only select this option if you have a workload that
1950 actually benefits from 64-bit processing or if your machine has
1951 large memory. You will only be presented a single option in this
1952 menu if your system does not support both 32-bit and 64-bit kernels.
1955 bool "32-bit kernel"
1956 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1959 Select this option if you want to build a 32-bit kernel.
1961 bool "64-bit kernel"
1962 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1964 Select this option if you want to build a 64-bit kernel.
1969 bool "KVM Guest Kernel"
1970 depends on BROKEN_ON_SMP
1972 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1974 config KVM_GUEST_TIMER_FREQ
1975 int "Count/Compare Timer Frequency (MHz)"
1976 depends on KVM_GUEST
1979 Set this to non-zero if building a guest kernel for KVM to skip RTC
1980 emulation when determining guest CPU Frequency. Instead, the guest's
1981 timer frequency is specified directly.
1984 prompt "Kernel page size"
1985 default PAGE_SIZE_4KB
1987 config PAGE_SIZE_4KB
1989 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
1991 This option select the standard 4kB Linux page size. On some
1992 R3000-family processors this is the only available page size. Using
1993 4kB page size will minimize memory consumption and is therefore
1994 recommended for low memory systems.
1996 config PAGE_SIZE_8KB
1998 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2000 Using 8kB page size will result in higher performance kernel at
2001 the price of higher memory consumption. This option is available
2002 only on R8000 and cnMIPS processors. Note that you will need a
2003 suitable Linux distribution to support this.
2005 config PAGE_SIZE_16KB
2007 depends on !CPU_R3000 && !CPU_TX39XX
2009 Using 16kB page size will result in higher performance kernel at
2010 the price of higher memory consumption. This option is available on
2011 all non-R3000 family processors. Note that you will need a suitable
2012 Linux distribution to support this.
2014 config PAGE_SIZE_32KB
2016 depends on CPU_CAVIUM_OCTEON
2018 Using 32kB page size will result in higher performance kernel at
2019 the price of higher memory consumption. This option is available
2020 only on cnMIPS cores. Note that you will need a suitable Linux
2021 distribution to support this.
2023 config PAGE_SIZE_64KB
2025 depends on !CPU_R3000 && !CPU_TX39XX
2027 Using 64kB page size will result in higher performance kernel at
2028 the price of higher memory consumption. This option is available on
2029 all non-R3000 family processor. Not that at the time of this
2030 writing this option is still high experimental.
2034 config FORCE_MAX_ZONEORDER
2035 int "Maximum zone order"
2036 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2037 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2038 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2039 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2040 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2041 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2045 The kernel memory allocator divides physically contiguous memory
2046 blocks into "zones", where each zone is a power of two number of
2047 pages. This option selects the largest power of two that the kernel
2048 keeps in the memory allocator. If you need to allocate very large
2049 blocks of physically contiguous memory, then you may need to
2050 increase this value.
2052 This config option is actually maximum order plus one. For example,
2053 a value of 11 means that the largest free memory block is 2^10 pages.
2055 The page size is not necessarily 4KB. Keep this in mind
2056 when choosing a value for this option.
2061 config IP22_CPU_SCACHE
2066 # Support for a MIPS32 / MIPS64 style S-caches
2068 config MIPS_CPU_SCACHE
2072 config R5000_CPU_SCACHE
2076 config RM7000_CPU_SCACHE
2080 config SIBYTE_DMA_PAGEOPS
2081 bool "Use DMA to clear/copy pages"
2084 Instead of using the CPU to zero and copy pages, use a Data Mover
2085 channel. These DMA channels are otherwise unused by the standard
2086 SiByte Linux port. Seems to give a small performance benefit.
2088 config CPU_HAS_PREFETCH
2091 config CPU_GENERIC_DUMP_TLB
2093 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2097 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2099 config CPU_R4K_CACHE_TLB
2101 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2104 bool "MIPS MT SMP support (1 TC on each available VPE)"
2105 depends on SYS_SUPPORTS_MULTITHREADING
2106 select CPU_MIPSR2_IRQ_VI
2107 select CPU_MIPSR2_IRQ_EI
2113 select SYS_SUPPORTS_SMP
2114 select SYS_SUPPORTS_SCHED_SMT
2115 select MIPS_PERF_SHARED_TC_COUNTERS
2117 This is a kernel model which is known as SMVP. This is supported
2118 on cores with the MT ASE and uses the available VPEs to implement
2119 virtual processors which supports SMP. This is equivalent to the
2120 Intel Hyperthreading feature. For further information go to
2121 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2127 bool "SMT (multithreading) scheduler support"
2128 depends on SYS_SUPPORTS_SCHED_SMT
2131 SMT scheduler support improves the CPU scheduler's decision making
2132 when dealing with MIPS MT enabled cores at a cost of slightly
2133 increased overhead in some places. If unsure say N here.
2135 config SYS_SUPPORTS_SCHED_SMT
2138 config SYS_SUPPORTS_MULTITHREADING
2141 config MIPS_MT_FPAFF
2142 bool "Dynamic FPU affinity for FP-intensive threads"
2144 depends on MIPS_MT_SMP
2146 config MIPSR2_TO_R6_EMULATOR
2147 bool "MIPS R2-to-R6 emulator"
2148 depends on CPU_MIPSR6 && !SMP
2151 Choose this option if you want to run non-R6 MIPS userland code.
2152 Even if you say 'Y' here, the emulator will still be disabled by
2153 default. You can enable it using the 'mipsr2emu' kernel option.
2154 The only reason this is a build-time option is to save ~14K from the
2156 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2157 depends on SMP && CPU_MIPSR6
2159 config MIPS_VPE_LOADER
2160 bool "VPE loader support."
2161 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2162 select CPU_MIPSR2_IRQ_VI
2163 select CPU_MIPSR2_IRQ_EI
2166 Includes a loader for loading an elf relocatable object
2167 onto another VPE and running it.
2169 config MIPS_VPE_LOADER_CMP
2172 depends on MIPS_VPE_LOADER && MIPS_CMP
2174 config MIPS_VPE_LOADER_MT
2177 depends on MIPS_VPE_LOADER && !MIPS_CMP
2179 config MIPS_VPE_LOADER_TOM
2180 bool "Load VPE program into memory hidden from linux"
2181 depends on MIPS_VPE_LOADER
2184 The loader can use memory that is present but has been hidden from
2185 Linux using the kernel command line option "mem=xxMB". It's up to
2186 you to ensure the amount you put in the option and the space your
2187 program requires is less or equal to the amount physically present.
2189 config MIPS_VPE_APSP_API
2190 bool "Enable support for AP/SP API (RTLX)"
2191 depends on MIPS_VPE_LOADER
2194 config MIPS_VPE_APSP_API_CMP
2197 depends on MIPS_VPE_APSP_API && MIPS_CMP
2199 config MIPS_VPE_APSP_API_MT
2202 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2205 bool "MIPS CMP framework support (DEPRECATED)"
2206 depends on SYS_SUPPORTS_MIPS_CMP
2210 select SYS_SUPPORTS_SMP
2211 select WEAK_ORDERING
2214 Select this if you are using a bootloader which implements the "CMP
2215 framework" protocol (ie. YAMON) and want your kernel to make use of
2216 its ability to start secondary CPUs.
2218 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2222 bool "MIPS Coherent Processing System support"
2223 depends on SYS_SUPPORTS_MIPS_CPS && !64BIT
2226 select MIPS_CPS_PM if HOTPLUG_CPU
2229 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2230 select SYS_SUPPORTS_HOTPLUG_CPU
2231 select SYS_SUPPORTS_SMP
2232 select WEAK_ORDERING
2234 Select this if you wish to run an SMP kernel across multiple cores
2235 within a MIPS Coherent Processing System. When this option is
2236 enabled the kernel will probe for other cores and boot them with
2237 no external assistance. It is safe to enable this when hardware
2238 support is unavailable.
2254 config SB1_PASS_1_WORKAROUNDS
2256 depends on CPU_SB1_PASS_1
2259 config SB1_PASS_2_WORKAROUNDS
2261 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2264 config SB1_PASS_2_1_WORKAROUNDS
2266 depends on CPU_SB1 && CPU_SB1_PASS_2
2270 config ARCH_PHYS_ADDR_T_64BIT
2274 prompt "SmartMIPS or microMIPS ASE support"
2276 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2279 Select this if you want neither microMIPS nor SmartMIPS support
2281 config CPU_HAS_SMARTMIPS
2282 depends on SYS_SUPPORTS_SMARTMIPS
2285 SmartMIPS is a extension of the MIPS32 architecture aimed at
2286 increased security at both hardware and software level for
2287 smartcards. Enabling this option will allow proper use of the
2288 SmartMIPS instructions by Linux applications. However a kernel with
2289 this option will not work on a MIPS core without SmartMIPS core. If
2290 you don't know you probably don't have SmartMIPS and should say N
2293 config CPU_MICROMIPS
2294 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2297 When this option is enabled the kernel will be built using the
2303 bool "Support for the MIPS SIMD Architecture (EXPERIMENTAL)"
2304 depends on CPU_SUPPORTS_MSA
2305 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2307 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2308 and a set of SIMD instructions to operate on them. When this option
2309 is enabled the kernel will support allocating & switching MSA
2310 vector register contexts. If you know that your kernel will only be
2311 running on CPUs which do not support MSA or that your userland will
2312 not be making use of it then you may wish to say N here to reduce
2313 the size & complexity of your kernel.
2324 # Vectored interrupt mode is an R2 feature
2326 config CPU_MIPSR2_IRQ_VI
2330 # Extended interrupt mode is an R2 feature
2332 config CPU_MIPSR2_IRQ_EI
2337 depends on !CPU_R3000
2343 config CPU_DADDI_WORKAROUNDS
2346 config CPU_R4000_WORKAROUNDS
2348 select CPU_R4400_WORKAROUNDS
2350 config CPU_R4400_WORKAROUNDS
2354 # - Highmem only makes sense for the 32-bit kernel.
2355 # - The current highmem code will only work properly on physically indexed
2356 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2357 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2358 # moment we protect the user and offer the highmem option only on machines
2359 # where it's known to be safe. This will not offer highmem on a few systems
2360 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2361 # indexed CPUs but we're playing safe.
2362 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2363 # know they might have memory configurations that could make use of highmem
2367 bool "High Memory Support"
2368 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2370 config CPU_SUPPORTS_HIGHMEM
2373 config SYS_SUPPORTS_HIGHMEM
2376 config SYS_SUPPORTS_SMARTMIPS
2379 config SYS_SUPPORTS_MICROMIPS
2382 config SYS_SUPPORTS_MIPS16
2385 This option must be set if a kernel might be executed on a MIPS16-
2386 enabled CPU even if MIPS16 is not actually being used. In other
2387 words, it makes the kernel MIPS16-tolerant.
2389 config CPU_SUPPORTS_MSA
2392 config ARCH_FLATMEM_ENABLE
2394 depends on !NUMA && !CPU_LOONGSON2
2396 config ARCH_DISCONTIGMEM_ENABLE
2398 default y if SGI_IP27
2400 Say Y to support efficient handling of discontiguous physical memory,
2401 for architectures which are either NUMA (Non-Uniform Memory Access)
2402 or have huge holes in the physical address space for other reasons.
2403 See <file:Documentation/vm/numa> for more.
2405 config ARCH_SPARSEMEM_ENABLE
2407 select SPARSEMEM_STATIC
2411 depends on SYS_SUPPORTS_NUMA
2413 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2414 Access). This option improves performance on systems with more
2415 than two nodes; on two node systems it is generally better to
2416 leave it disabled; on single node systems disable this option
2419 config SYS_SUPPORTS_NUMA
2425 depends on NEED_MULTIPLE_NODES
2427 config HW_PERF_EVENTS
2428 bool "Enable hardware performance counter support for perf events"
2429 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2432 Enable hardware performance counter support for perf events. If
2433 disabled, perf events will use software events only.
2438 bool "Multi-Processing support"
2439 depends on SYS_SUPPORTS_SMP
2441 This enables support for systems with more than one CPU. If you have
2442 a system with only one CPU, say N. If you have a system with more
2443 than one CPU, say Y.
2445 If you say N here, the kernel will run on uni- and multiprocessor
2446 machines, but will use only one CPU of a multiprocessor machine. If
2447 you say Y here, the kernel will run on many, but not all,
2448 uniprocessor machines. On a uniprocessor machine, the kernel
2449 will run faster if you say N here.
2451 People using multiprocessor machines who say Y here should also say
2452 Y to "Enhanced Real Time Clock Support", below.
2454 See also the SMP-HOWTO available at
2455 <http://www.tldp.org/docs.html#howto>.
2457 If you don't know what to do here, say N.
2462 config SYS_SUPPORTS_MIPS_CMP
2465 config SYS_SUPPORTS_MIPS_CPS
2468 config SYS_SUPPORTS_SMP
2471 config NR_CPUS_DEFAULT_4
2474 config NR_CPUS_DEFAULT_8
2477 config NR_CPUS_DEFAULT_16
2480 config NR_CPUS_DEFAULT_32
2483 config NR_CPUS_DEFAULT_64
2487 int "Maximum number of CPUs (2-256)"
2490 default "4" if NR_CPUS_DEFAULT_4
2491 default "8" if NR_CPUS_DEFAULT_8
2492 default "16" if NR_CPUS_DEFAULT_16
2493 default "32" if NR_CPUS_DEFAULT_32
2494 default "64" if NR_CPUS_DEFAULT_64
2496 This allows you to specify the maximum number of CPUs which this
2497 kernel will support. The maximum supported value is 32 for 32-bit
2498 kernel and 64 for 64-bit kernels; the minimum value which makes
2499 sense is 1 for Qemu (useful only for kernel debugging purposes)
2500 and 2 for all others.
2502 This is purely to save memory - each supported CPU adds
2503 approximately eight kilobytes to the kernel image. For best
2504 performance should round up your number of processors to the next
2507 config MIPS_PERF_SHARED_TC_COUNTERS
2511 # Timer Interrupt Frequency Configuration
2515 prompt "Timer frequency"
2518 Allows the configuration of the timer frequency.
2521 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2524 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2527 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2530 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2533 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2536 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2539 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2543 config SYS_SUPPORTS_48HZ
2546 config SYS_SUPPORTS_100HZ
2549 config SYS_SUPPORTS_128HZ
2552 config SYS_SUPPORTS_250HZ
2555 config SYS_SUPPORTS_256HZ
2558 config SYS_SUPPORTS_1000HZ
2561 config SYS_SUPPORTS_1024HZ
2564 config SYS_SUPPORTS_ARBIT_HZ
2566 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2567 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2568 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2569 !SYS_SUPPORTS_1024HZ
2574 default 100 if HZ_100
2575 default 128 if HZ_128
2576 default 250 if HZ_250
2577 default 256 if HZ_256
2578 default 1000 if HZ_1000
2579 default 1024 if HZ_1024
2582 def_bool HIGH_RES_TIMERS
2584 source "kernel/Kconfig.preempt"
2587 bool "Kexec system call"
2589 kexec is a system call that implements the ability to shutdown your
2590 current kernel, and to start another kernel. It is like a reboot
2591 but it is independent of the system firmware. And like a reboot
2592 you can start any kernel with it, not just Linux.
2594 The name comes from the similarity to the exec system call.
2596 It is an ongoing process to be certain the hardware in a machine
2597 is properly shutdown, so do not be surprised if this code does not
2598 initially work for you. As of this writing the exact hardware
2599 interface is strongly in flux, so no good recommendation can be
2603 bool "Kernel crash dumps"
2605 Generate crash dump after being started by kexec.
2606 This should be normally only set in special crash dump kernels
2607 which are loaded in the main kernel with kexec-tools into
2608 a specially reserved region and then later executed after
2609 a crash by kdump/kexec. The crash dump kernel must be compiled
2610 to a memory address not used by the main kernel or firmware using
2613 config PHYSICAL_START
2614 hex "Physical address where the kernel is loaded"
2615 default "0xffffffff84000000" if 64BIT
2616 default "0x84000000" if 32BIT
2617 depends on CRASH_DUMP
2619 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2620 If you plan to use kernel for capturing the crash dump change
2621 this value to start of the reserved region (the "X" value as
2622 specified in the "crashkernel=YM@XM" command line boot parameter
2623 passed to the panic-ed kernel).
2626 bool "Enable seccomp to safely compute untrusted bytecode"
2630 This kernel feature is useful for number crunching applications
2631 that may need to compute untrusted bytecode during their
2632 execution. By using pipes or other transports made available to
2633 the process as file descriptors supporting the read/write
2634 syscalls, it's possible to isolate those applications in
2635 their own address space using seccomp. Once seccomp is
2636 enabled via /proc/<pid>/seccomp, it cannot be disabled
2637 and the task is only allowed to execute a few safe syscalls
2638 defined by each seccomp mode.
2640 If unsure, say Y. Only embedded should say N here.
2642 config MIPS_O32_FP64_SUPPORT
2643 bool "Support for O32 binaries using 64-bit FP (EXPERIMENTAL)"
2644 depends on 32BIT || MIPS32_O32
2646 When this is enabled, the kernel will support use of 64-bit floating
2647 point registers with binaries using the O32 ABI along with the
2648 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2649 32-bit MIPS systems this support is at the cost of increasing the
2650 size and complexity of the compiled FPU emulator. Thus if you are
2651 running a MIPS32 system and know that none of your userland binaries
2652 will require 64-bit floating point, you may wish to reduce the size
2653 of your kernel & potentially improve FP emulation performance by
2656 Although binutils currently supports use of this flag the details
2657 concerning its effect upon the O32 ABI in userland are still being
2658 worked on. In order to avoid userland becoming dependant upon current
2659 behaviour before the details have been finalised, this option should
2660 be considered experimental and only enabled by those working upon
2668 select OF_EARLY_FLATTREE
2676 config LOCKDEP_SUPPORT
2680 config STACKTRACE_SUPPORT
2684 config PGTABLE_LEVELS
2686 default 3 if 64BIT && !PAGE_SIZE_64KB
2689 source "init/Kconfig"
2691 source "kernel/Kconfig.freezer"
2693 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2701 bool "Support for PCI controller"
2702 depends on HW_HAS_PCI
2704 select NO_GENERIC_PCI_IOPORT_MAP
2706 Find out whether you have a PCI motherboard. PCI is the name of a
2707 bus system, i.e. the way the CPU talks to the other stuff inside
2708 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2712 bool "Support for HT-linked PCI"
2714 depends on CPU_LOONGSON3
2718 Loongson family machines use Hyper-Transport bus for inter-core
2719 connection and device connection. The PCI bus is a subordinate
2720 linked at HT. Choose Y for Loongson-3 based machines.
2725 source "drivers/pci/Kconfig"
2727 source "drivers/pci/pcie/Kconfig"
2730 # ISA support is now enabled via select. Too many systems still have the one
2731 # or other ISA chip on the board that users don't know about so don't expect
2732 # users to choose the right thing ...
2739 depends on HW_HAS_EISA
2741 select GENERIC_ISA_DMA
2743 The Extended Industry Standard Architecture (EISA) bus was
2744 developed as an open alternative to the IBM MicroChannel bus.
2746 The EISA bus provided some of the features of the IBM MicroChannel
2747 bus while maintaining backward compatibility with cards made for
2748 the older ISA bus. The EISA bus saw limited use between 1988 and
2749 1995 when it was made obsolete by the PCI bus.
2751 Say Y here if you are building a kernel for an EISA-based machine.
2755 source "drivers/eisa/Kconfig"
2758 bool "TURBOchannel support"
2759 depends on MACH_DECSTATION
2761 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2762 processors. TURBOchannel programming specifications are available
2764 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2766 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2767 Linux driver support status is documented at:
2768 <http://www.linux-mips.org/wiki/DECstation>
2778 select MIPS_EXTERNAL_TIMER
2786 source "drivers/pcmcia/Kconfig"
2788 source "drivers/pci/hotplug/Kconfig"
2791 tristate "RapidIO support"
2795 If you say Y here, the kernel will include drivers and
2796 infrastructure code to support RapidIO interconnect devices.
2798 source "drivers/rapidio/Kconfig"
2802 menu "Executable file formats"
2804 source "fs/Kconfig.binfmt"
2809 config MIPS32_COMPAT
2815 config SYSVIPC_COMPAT
2819 bool "Kernel support for o32 binaries"
2821 select ARCH_WANT_OLD_COMPAT_IPC
2823 select MIPS32_COMPAT
2824 select SYSVIPC_COMPAT if SYSVIPC
2826 Select this option if you want to run o32 binaries. These are pure
2827 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2828 existing binaries are in this format.
2833 bool "Kernel support for n32 binaries"
2836 select MIPS32_COMPAT
2837 select SYSVIPC_COMPAT if SYSVIPC
2839 Select this option if you want to run n32 binaries. These are
2840 64-bit binaries using 32-bit quantities for addressing and certain
2841 data that would normally be 64-bit. They are used in special
2848 default y if MIPS32_O32 || MIPS32_N32
2852 menu "Power management options"
2854 config ARCH_HIBERNATION_POSSIBLE
2856 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2858 config ARCH_SUSPEND_POSSIBLE
2860 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2862 source "kernel/power/Kconfig"
2866 config MIPS_EXTERNAL_TIMER
2869 menu "CPU Power Management"
2871 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2872 source "drivers/cpufreq/Kconfig"
2875 source "drivers/cpuidle/Kconfig"
2879 source "net/Kconfig"
2881 source "drivers/Kconfig"
2883 source "drivers/firmware/Kconfig"
2887 source "arch/mips/Kconfig.debug"
2889 source "security/Kconfig"
2891 source "crypto/Kconfig"
2893 source "lib/Kconfig"
2895 source "arch/mips/kvm/Kconfig"