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
393 This enables support for the IMG Pistachio SoC platform.
396 bool "MIPS Malta board"
397 select ARCH_MAY_HAVE_PC_FDC
402 select CLKSRC_MIPS_GIC
403 select DMA_MAYBE_COHERENT
404 select GENERIC_ISA_DMA
405 select HAVE_PCSPKR_PLATFORM
412 select MIPS_CPU_SCACHE
413 select MIPS_L1_CACHE_SHIFT_6
414 select PCI_GT64XXX_PCI0
417 select SYS_HAS_CPU_MIPS32_R1
418 select SYS_HAS_CPU_MIPS32_R2
419 select SYS_HAS_CPU_MIPS32_R3_5
420 select SYS_HAS_CPU_MIPS32_R5
421 select SYS_HAS_CPU_MIPS32_R6
422 select SYS_HAS_CPU_MIPS64_R1
423 select SYS_HAS_CPU_MIPS64_R2
424 select SYS_HAS_CPU_MIPS64_R6
425 select SYS_HAS_CPU_NEVADA
426 select SYS_HAS_CPU_RM7000
427 select SYS_SUPPORTS_32BIT_KERNEL
428 select SYS_SUPPORTS_64BIT_KERNEL
429 select SYS_SUPPORTS_BIG_ENDIAN
430 select SYS_SUPPORTS_HIGHMEM
431 select SYS_SUPPORTS_LITTLE_ENDIAN
432 select SYS_SUPPORTS_MICROMIPS
433 select SYS_SUPPORTS_MIPS_CMP
434 select SYS_SUPPORTS_MIPS_CPS
435 select SYS_SUPPORTS_MIPS16
436 select SYS_SUPPORTS_MULTITHREADING
437 select SYS_SUPPORTS_SMARTMIPS
438 select SYS_SUPPORTS_ZBOOT
440 This enables support for the MIPS Technologies Malta evaluation
444 bool "MIPS SEAD3 board"
450 select CLKSRC_MIPS_GIC
451 select CPU_MIPSR2_IRQ_VI
452 select CPU_MIPSR2_IRQ_EI
453 select DMA_NONCOHERENT
458 select SYS_HAS_CPU_MIPS32_R1
459 select SYS_HAS_CPU_MIPS32_R2
460 select SYS_HAS_CPU_MIPS64_R1
461 select SYS_HAS_EARLY_PRINTK
462 select SYS_SUPPORTS_32BIT_KERNEL
463 select SYS_SUPPORTS_64BIT_KERNEL
464 select SYS_SUPPORTS_BIG_ENDIAN
465 select SYS_SUPPORTS_LITTLE_ENDIAN
466 select SYS_SUPPORTS_SMARTMIPS
467 select SYS_SUPPORTS_MICROMIPS
468 select SYS_SUPPORTS_MIPS16
469 select USB_EHCI_BIG_ENDIAN_DESC
470 select USB_EHCI_BIG_ENDIAN_MMIO
473 This enables support for the MIPS Technologies SEAD3 evaluation
477 bool "NEC EMMA2RH Mark-eins board"
481 This enables support for the NEC Electronics Mark-eins boards.
484 bool "NEC VR4100 series based machines"
487 select SYS_HAS_CPU_VR41XX
488 select SYS_SUPPORTS_MIPS16
489 select ARCH_REQUIRE_GPIOLIB
492 bool "NXP STB220 board"
495 Support for NXP Semiconductors STB220 Development Board.
502 Support for NXP Semiconductors STB225 Development Board.
505 bool "PMC-Sierra MSP chipsets"
508 select DMA_NONCOHERENT
510 select NO_EXCEPT_FILL
512 select SYS_HAS_CPU_MIPS32_R1
513 select SYS_HAS_CPU_MIPS32_R2
514 select SYS_SUPPORTS_32BIT_KERNEL
515 select SYS_SUPPORTS_BIG_ENDIAN
516 select SYS_SUPPORTS_MIPS16
519 select SERIAL_8250_CONSOLE
520 select USB_EHCI_BIG_ENDIAN_MMIO
521 select USB_EHCI_BIG_ENDIAN_DESC
523 This adds support for the PMC-Sierra family of Multi-Service
524 Processor System-On-A-Chips. These parts include a number
525 of integrated peripherals, interfaces and DSPs in addition to
526 a variety of MIPS cores.
529 bool "Ralink based machines"
533 select DMA_NONCOHERENT
536 select SYS_HAS_CPU_MIPS32_R1
537 select SYS_HAS_CPU_MIPS32_R2
538 select SYS_SUPPORTS_32BIT_KERNEL
539 select SYS_SUPPORTS_LITTLE_ENDIAN
540 select SYS_SUPPORTS_MIPS16
541 select SYS_HAS_EARLY_PRINTK
542 select HAVE_MACH_CLKDEV
544 select ARCH_HAS_RESET_CONTROLLER
545 select RESET_CONTROLLER
548 bool "SGI IP22 (Indy/Indigo2)"
554 select DEFAULT_SGI_PARTITION
555 select DMA_NONCOHERENT
559 select IP22_CPU_SCACHE
561 select GENERIC_ISA_DMA_SUPPORT_BROKEN
563 select SGI_HAS_INDYDOG
569 select SYS_HAS_CPU_R4X00
570 select SYS_HAS_CPU_R5000
572 # Disable EARLY_PRINTK for now since it leads to overwritten prom
573 # memory during early boot on some machines.
575 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
576 # for a more details discussion
578 # select SYS_HAS_EARLY_PRINTK
579 select SYS_SUPPORTS_32BIT_KERNEL
580 select SYS_SUPPORTS_64BIT_KERNEL
581 select SYS_SUPPORTS_BIG_ENDIAN
582 select MIPS_L1_CACHE_SHIFT_7
584 This are the SGI Indy, Challenge S and Indigo2, as well as certain
585 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
586 that runs on these, say Y here.
589 bool "SGI IP27 (Origin200/2000)"
593 select DEFAULT_SGI_PARTITION
595 select SYS_HAS_EARLY_PRINTK
597 select NR_CPUS_DEFAULT_64
598 select SYS_HAS_CPU_R10000
599 select SYS_SUPPORTS_64BIT_KERNEL
600 select SYS_SUPPORTS_BIG_ENDIAN
601 select SYS_SUPPORTS_NUMA
602 select SYS_SUPPORTS_SMP
603 select MIPS_L1_CACHE_SHIFT_7
605 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
606 workstations. To compile a Linux kernel that runs on these, say Y
610 bool "SGI IP28 (Indigo2 R10k)"
616 select DEFAULT_SGI_PARTITION
617 select DMA_NONCOHERENT
618 select GENERIC_ISA_DMA_SUPPORT_BROKEN
624 select SGI_HAS_INDYDOG
630 select SYS_HAS_CPU_R10000
632 # Disable EARLY_PRINTK for now since it leads to overwritten prom
633 # memory during early boot on some machines.
635 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
636 # for a more details discussion
638 # select SYS_HAS_EARLY_PRINTK
639 select SYS_SUPPORTS_64BIT_KERNEL
640 select SYS_SUPPORTS_BIG_ENDIAN
641 select MIPS_L1_CACHE_SHIFT_7
643 This is the SGI Indigo2 with R10000 processor. To compile a Linux
644 kernel that runs on these, say Y here.
653 select DMA_NONCOHERENT
656 select R5000_CPU_SCACHE
657 select RM7000_CPU_SCACHE
658 select SYS_HAS_CPU_R5000
659 select SYS_HAS_CPU_R10000 if BROKEN
660 select SYS_HAS_CPU_RM7000
661 select SYS_HAS_CPU_NEVADA
662 select SYS_SUPPORTS_64BIT_KERNEL
663 select SYS_SUPPORTS_BIG_ENDIAN
665 If you want this kernel to run on SGI O2 workstation, say Y here.
668 bool "Sibyte BCM91120C-CRhine"
671 select SIBYTE_BCM1120
673 select SYS_HAS_CPU_SB1
674 select SYS_SUPPORTS_BIG_ENDIAN
675 select SYS_SUPPORTS_LITTLE_ENDIAN
678 bool "Sibyte BCM91120x-Carmel"
681 select SIBYTE_BCM1120
683 select SYS_HAS_CPU_SB1
684 select SYS_SUPPORTS_BIG_ENDIAN
685 select SYS_SUPPORTS_LITTLE_ENDIAN
688 bool "Sibyte BCM91125C-CRhone"
691 select SIBYTE_BCM1125
693 select SYS_HAS_CPU_SB1
694 select SYS_SUPPORTS_BIG_ENDIAN
695 select SYS_SUPPORTS_HIGHMEM
696 select SYS_SUPPORTS_LITTLE_ENDIAN
699 bool "Sibyte BCM91125E-Rhone"
702 select SIBYTE_BCM1125H
704 select SYS_HAS_CPU_SB1
705 select SYS_SUPPORTS_BIG_ENDIAN
706 select SYS_SUPPORTS_LITTLE_ENDIAN
709 bool "Sibyte BCM91250A-SWARM"
712 select HAVE_PATA_PLATFORM
715 select SYS_HAS_CPU_SB1
716 select SYS_SUPPORTS_BIG_ENDIAN
717 select SYS_SUPPORTS_HIGHMEM
718 select SYS_SUPPORTS_LITTLE_ENDIAN
719 select ZONE_DMA32 if 64BIT
721 config SIBYTE_LITTLESUR
722 bool "Sibyte BCM91250C2-LittleSur"
725 select HAVE_PATA_PLATFORM
728 select SYS_HAS_CPU_SB1
729 select SYS_SUPPORTS_BIG_ENDIAN
730 select SYS_SUPPORTS_HIGHMEM
731 select SYS_SUPPORTS_LITTLE_ENDIAN
733 config SIBYTE_SENTOSA
734 bool "Sibyte BCM91250E-Sentosa"
739 select SYS_HAS_CPU_SB1
740 select SYS_SUPPORTS_BIG_ENDIAN
741 select SYS_SUPPORTS_LITTLE_ENDIAN
744 bool "Sibyte BCM91480B-BigSur"
747 select NR_CPUS_DEFAULT_4
748 select SIBYTE_BCM1x80
750 select SYS_HAS_CPU_SB1
751 select SYS_SUPPORTS_BIG_ENDIAN
752 select SYS_SUPPORTS_HIGHMEM
753 select SYS_SUPPORTS_LITTLE_ENDIAN
754 select ZONE_DMA32 if 64BIT
757 bool "SNI RM200/300/400"
758 select FW_ARC if CPU_LITTLE_ENDIAN
759 select FW_ARC32 if CPU_LITTLE_ENDIAN
760 select FW_SNIPROM if CPU_BIG_ENDIAN
761 select ARCH_MAY_HAVE_PC_FDC
765 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
766 select DMA_NONCOHERENT
767 select GENERIC_ISA_DMA
768 select HAVE_PCSPKR_PLATFORM
775 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
776 select SYS_HAS_CPU_R4X00
777 select SYS_HAS_CPU_R5000
778 select SYS_HAS_CPU_R10000
779 select R5000_CPU_SCACHE
780 select SYS_HAS_EARLY_PRINTK
781 select SYS_SUPPORTS_32BIT_KERNEL
782 select SYS_SUPPORTS_64BIT_KERNEL
783 select SYS_SUPPORTS_BIG_ENDIAN
784 select SYS_SUPPORTS_HIGHMEM
785 select SYS_SUPPORTS_LITTLE_ENDIAN
787 The SNI RM200/300/400 are MIPS-based machines manufactured by
788 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
789 Technology and now in turn merged with Fujitsu. Say Y here to
790 support this machine type.
793 bool "Toshiba TX39 series based machines"
796 bool "Toshiba TX49 series based machines"
798 config MIKROTIK_RB532
799 bool "Mikrotik RB532 boards"
802 select DMA_NONCOHERENT
805 select SYS_HAS_CPU_MIPS32_R1
806 select SYS_SUPPORTS_32BIT_KERNEL
807 select SYS_SUPPORTS_LITTLE_ENDIAN
810 select ARCH_REQUIRE_GPIOLIB
811 select MIPS_L1_CACHE_SHIFT_4
813 Support the Mikrotik(tm) RouterBoard 532 series,
814 based on the IDT RC32434 SoC.
816 config CAVIUM_OCTEON_SOC
817 bool "Cavium Networks Octeon SoC based boards"
819 select ARCH_PHYS_ADDR_T_64BIT
821 select SYS_SUPPORTS_64BIT_KERNEL
822 select SYS_SUPPORTS_BIG_ENDIAN
824 select SYS_SUPPORTS_LITTLE_ENDIAN
825 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
826 select SYS_HAS_EARLY_PRINTK
827 select SYS_HAS_CPU_CAVIUM_OCTEON
832 select ARCH_REQUIRE_GPIOLIB
835 select ARCH_SPARSEMEM_ENABLE
836 select SYS_SUPPORTS_SMP
837 select NR_CPUS_DEFAULT_16
839 select MTD_COMPLEX_MAPPINGS
841 This option supports all of the Octeon reference boards from Cavium
842 Networks. It builds a kernel that dynamically determines the Octeon
843 CPU type and supports all known board reference implementations.
844 Some of the supported boards are:
851 Say Y here for most Octeon reference boards.
854 bool "Netlogic XLR/XLS based systems"
857 select SYS_HAS_CPU_XLR
858 select SYS_SUPPORTS_SMP
861 select SYS_SUPPORTS_32BIT_KERNEL
862 select SYS_SUPPORTS_64BIT_KERNEL
863 select ARCH_PHYS_ADDR_T_64BIT
864 select SYS_SUPPORTS_BIG_ENDIAN
865 select SYS_SUPPORTS_HIGHMEM
867 select NR_CPUS_DEFAULT_32
871 select ZONE_DMA32 if 64BIT
873 select SYS_HAS_EARLY_PRINTK
874 select SYS_SUPPORTS_ZBOOT
875 select SYS_SUPPORTS_ZBOOT_UART16550
877 Support for systems based on Netlogic XLR and XLS processors.
878 Say Y here if you have a XLR or XLS based board.
881 bool "Netlogic XLP based systems"
884 select SYS_HAS_CPU_XLP
885 select SYS_SUPPORTS_SMP
887 select SYS_SUPPORTS_32BIT_KERNEL
888 select SYS_SUPPORTS_64BIT_KERNEL
889 select ARCH_PHYS_ADDR_T_64BIT
890 select SYS_SUPPORTS_BIG_ENDIAN
891 select SYS_SUPPORTS_LITTLE_ENDIAN
892 select SYS_SUPPORTS_HIGHMEM
894 select NR_CPUS_DEFAULT_32
898 select ZONE_DMA32 if 64BIT
900 select SYS_HAS_EARLY_PRINTK
902 select SYS_SUPPORTS_ZBOOT
903 select SYS_SUPPORTS_ZBOOT_UART16550
905 This board is based on Netlogic XLP Processor.
906 Say Y here if you have a XLP based board.
909 bool "Para-Virtualized guest system"
913 select SYS_SUPPORTS_64BIT_KERNEL
914 select SYS_SUPPORTS_32BIT_KERNEL
915 select SYS_SUPPORTS_BIG_ENDIAN
916 select SYS_SUPPORTS_SMP
917 select NR_CPUS_DEFAULT_4
918 select SYS_HAS_EARLY_PRINTK
919 select SYS_HAS_CPU_MIPS32_R2
920 select SYS_HAS_CPU_MIPS64_R2
921 select SYS_HAS_CPU_CAVIUM_OCTEON
925 This option supports guest running under ????
929 source "arch/mips/alchemy/Kconfig"
930 source "arch/mips/ath25/Kconfig"
931 source "arch/mips/ath79/Kconfig"
932 source "arch/mips/bcm47xx/Kconfig"
933 source "arch/mips/bcm63xx/Kconfig"
934 source "arch/mips/bmips/Kconfig"
935 source "arch/mips/jazz/Kconfig"
936 source "arch/mips/jz4740/Kconfig"
937 source "arch/mips/lantiq/Kconfig"
938 source "arch/mips/lasat/Kconfig"
939 source "arch/mips/pmcs-msp71xx/Kconfig"
940 source "arch/mips/ralink/Kconfig"
941 source "arch/mips/sgi-ip27/Kconfig"
942 source "arch/mips/sibyte/Kconfig"
943 source "arch/mips/txx9/Kconfig"
944 source "arch/mips/vr41xx/Kconfig"
945 source "arch/mips/cavium-octeon/Kconfig"
946 source "arch/mips/loongson/Kconfig"
947 source "arch/mips/loongson1/Kconfig"
948 source "arch/mips/netlogic/Kconfig"
949 source "arch/mips/paravirt/Kconfig"
953 config RWSEM_GENERIC_SPINLOCK
957 config RWSEM_XCHGADD_ALGORITHM
960 config ARCH_HAS_ILOG2_U32
964 config ARCH_HAS_ILOG2_U64
968 config GENERIC_HWEIGHT
972 config GENERIC_CALIBRATE_DELAY
976 config SCHED_OMIT_FRAME_POINTER
981 # Select some configuration options automatically based on user selections.
986 config ARCH_MAY_HAVE_PC_FDC
1023 select ARCH_REQUIRE_GPIOLIB
1029 config ARCH_DMA_ADDR_T_64BIT
1030 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1032 config DMA_MAYBE_COHERENT
1033 select DMA_NONCOHERENT
1039 config DMA_NONCOHERENT
1041 select NEED_DMA_MAP_STATE
1043 config NEED_DMA_MAP_STATE
1046 config SYS_HAS_EARLY_PRINTK
1050 bool "Support for hot-pluggable CPUs"
1051 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
1053 Say Y here to allow turning CPUs off and on. CPUs can be
1054 controlled through /sys/devices/system/cpu.
1055 (Note: power management support will enable this option
1056 automatically on SMP systems. )
1057 Say N if you want to disable CPU hotplug.
1059 config SYS_SUPPORTS_HOTPLUG_CPU
1066 config MIPS_BONITO64
1081 config NO_IOPORT_MAP
1087 config GENERIC_ISA_DMA
1089 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1092 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1094 select GENERIC_ISA_DMA
1099 config HOLES_IN_ZONE
1103 # Endianness selection. Sufficiently obscure so many users don't know what to
1104 # answer,so we try hard to limit the available choices. Also the use of a
1105 # choice statement should be more obvious to the user.
1108 prompt "Endianness selection"
1110 Some MIPS machines can be configured for either little or big endian
1111 byte order. These modes require different kernels and a different
1112 Linux distribution. In general there is one preferred byteorder for a
1113 particular system but some systems are just as commonly used in the
1114 one or the other endianness.
1116 config CPU_BIG_ENDIAN
1118 depends on SYS_SUPPORTS_BIG_ENDIAN
1120 config CPU_LITTLE_ENDIAN
1121 bool "Little endian"
1122 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1129 config SYS_SUPPORTS_APM_EMULATION
1132 config SYS_SUPPORTS_BIG_ENDIAN
1135 config SYS_SUPPORTS_LITTLE_ENDIAN
1138 config SYS_SUPPORTS_HUGETLBFS
1140 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1143 config MIPS_HUGE_TLB_SUPPORT
1144 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1161 config PCI_GT64XXX_PCI0
1164 config NO_EXCEPT_FILL
1171 select DMA_NONCOHERENT
1173 select SWAP_IO_SPACE
1174 select SYS_HAS_CPU_R5500
1175 select SYS_SUPPORTS_32BIT_KERNEL
1176 select SYS_SUPPORTS_64BIT_KERNEL
1177 select SYS_SUPPORTS_BIG_ENDIAN
1184 select DMA_NONCOHERENT
1185 select SYS_HAS_CPU_MIPS32_R2
1186 select SYS_SUPPORTS_32BIT_KERNEL
1187 select SYS_SUPPORTS_LITTLE_ENDIAN
1188 select SYS_SUPPORTS_BIG_ENDIAN
1189 select SYS_SUPPORTS_MIPS16
1190 select CPU_MIPSR2_IRQ_VI
1199 config SWAP_IO_SPACE
1202 config SGI_HAS_INDYDOG
1214 config SGI_HAS_ZILOG
1217 config SGI_HAS_I8042
1220 config DEFAULT_SGI_PARTITION
1232 config MIPS_L1_CACHE_SHIFT_4
1235 config MIPS_L1_CACHE_SHIFT_5
1238 config MIPS_L1_CACHE_SHIFT_6
1241 config MIPS_L1_CACHE_SHIFT_7
1244 config MIPS_L1_CACHE_SHIFT
1246 default "7" if MIPS_L1_CACHE_SHIFT_7
1247 default "6" if MIPS_L1_CACHE_SHIFT_6
1248 default "5" if MIPS_L1_CACHE_SHIFT_5
1249 default "4" if MIPS_L1_CACHE_SHIFT_4
1252 config HAVE_STD_PC_SERIAL_PORT
1256 bool "ARC console support"
1257 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1261 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1266 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1275 menu "CPU selection"
1281 config CPU_LOONGSON3
1282 bool "Loongson 3 CPU"
1283 depends on SYS_HAS_CPU_LOONGSON3
1284 select CPU_SUPPORTS_64BIT_KERNEL
1285 select CPU_SUPPORTS_HIGHMEM
1286 select CPU_SUPPORTS_HUGEPAGES
1287 select WEAK_ORDERING
1288 select WEAK_REORDERING_BEYOND_LLSC
1289 select ARCH_REQUIRE_GPIOLIB
1291 The Loongson 3 processor implements the MIPS64R2 instruction
1292 set with many extensions.
1294 config CPU_LOONGSON2E
1296 depends on SYS_HAS_CPU_LOONGSON2E
1297 select CPU_LOONGSON2
1299 The Loongson 2E processor implements the MIPS III instruction set
1300 with many extensions.
1302 It has an internal FPGA northbridge, which is compatible to
1305 config CPU_LOONGSON2F
1307 depends on SYS_HAS_CPU_LOONGSON2F
1308 select CPU_LOONGSON2
1309 select ARCH_REQUIRE_GPIOLIB
1311 The Loongson 2F processor implements the MIPS III instruction set
1312 with many extensions.
1314 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1315 have a similar programming interface with FPGA northbridge used in
1318 config CPU_LOONGSON1B
1320 depends on SYS_HAS_CPU_LOONGSON1B
1321 select CPU_LOONGSON1
1323 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1324 release 2 instruction set.
1326 config CPU_MIPS32_R1
1327 bool "MIPS32 Release 1"
1328 depends on SYS_HAS_CPU_MIPS32_R1
1329 select CPU_HAS_PREFETCH
1330 select CPU_SUPPORTS_32BIT_KERNEL
1331 select CPU_SUPPORTS_HIGHMEM
1333 Choose this option to build a kernel for release 1 or later of the
1334 MIPS32 architecture. Most modern embedded systems with a 32-bit
1335 MIPS processor are based on a MIPS32 processor. If you know the
1336 specific type of processor in your system, choose those that one
1337 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1338 Release 2 of the MIPS32 architecture is available since several
1339 years so chances are you even have a MIPS32 Release 2 processor
1340 in which case you should choose CPU_MIPS32_R2 instead for better
1343 config CPU_MIPS32_R2
1344 bool "MIPS32 Release 2"
1345 depends on SYS_HAS_CPU_MIPS32_R2
1346 select CPU_HAS_PREFETCH
1347 select CPU_SUPPORTS_32BIT_KERNEL
1348 select CPU_SUPPORTS_HIGHMEM
1349 select CPU_SUPPORTS_MSA
1352 Choose this option to build a kernel for release 2 or later of the
1353 MIPS32 architecture. Most modern embedded systems with a 32-bit
1354 MIPS processor are based on a MIPS32 processor. If you know the
1355 specific type of processor in your system, choose those that one
1356 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1358 config CPU_MIPS32_R6
1359 bool "MIPS32 Release 6 (EXPERIMENTAL)"
1360 depends on SYS_HAS_CPU_MIPS32_R6
1361 select CPU_HAS_PREFETCH
1362 select CPU_SUPPORTS_32BIT_KERNEL
1363 select CPU_SUPPORTS_HIGHMEM
1364 select CPU_SUPPORTS_MSA
1367 select MIPS_O32_FP64_SUPPORT
1369 Choose this option to build a kernel for release 6 or later of the
1370 MIPS32 architecture. New MIPS processors, starting with the Warrior
1371 family, are based on a MIPS32r6 processor. If you own an older
1372 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1374 config CPU_MIPS64_R1
1375 bool "MIPS64 Release 1"
1376 depends on SYS_HAS_CPU_MIPS64_R1
1377 select CPU_HAS_PREFETCH
1378 select CPU_SUPPORTS_32BIT_KERNEL
1379 select CPU_SUPPORTS_64BIT_KERNEL
1380 select CPU_SUPPORTS_HIGHMEM
1381 select CPU_SUPPORTS_HUGEPAGES
1383 Choose this option to build a kernel for release 1 or later of the
1384 MIPS64 architecture. Many modern embedded systems with a 64-bit
1385 MIPS processor are based on a MIPS64 processor. If you know the
1386 specific type of processor in your system, choose those that one
1387 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1388 Release 2 of the MIPS64 architecture is available since several
1389 years so chances are you even have a MIPS64 Release 2 processor
1390 in which case you should choose CPU_MIPS64_R2 instead for better
1393 config CPU_MIPS64_R2
1394 bool "MIPS64 Release 2"
1395 depends on SYS_HAS_CPU_MIPS64_R2
1396 select CPU_HAS_PREFETCH
1397 select CPU_SUPPORTS_32BIT_KERNEL
1398 select CPU_SUPPORTS_64BIT_KERNEL
1399 select CPU_SUPPORTS_HIGHMEM
1400 select CPU_SUPPORTS_HUGEPAGES
1401 select CPU_SUPPORTS_MSA
1403 Choose this option to build a kernel for release 2 or later of the
1404 MIPS64 architecture. Many modern embedded systems with a 64-bit
1405 MIPS processor are based on a MIPS64 processor. If you know the
1406 specific type of processor in your system, choose those that one
1407 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1409 config CPU_MIPS64_R6
1410 bool "MIPS64 Release 6 (EXPERIMENTAL)"
1411 depends on SYS_HAS_CPU_MIPS64_R6
1412 select CPU_HAS_PREFETCH
1413 select CPU_SUPPORTS_32BIT_KERNEL
1414 select CPU_SUPPORTS_64BIT_KERNEL
1415 select CPU_SUPPORTS_HIGHMEM
1416 select CPU_SUPPORTS_MSA
1419 Choose this option to build a kernel for release 6 or later of the
1420 MIPS64 architecture. New MIPS processors, starting with the Warrior
1421 family, are based on a MIPS64r6 processor. If you own an older
1422 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1426 depends on SYS_HAS_CPU_R3000
1428 select CPU_SUPPORTS_32BIT_KERNEL
1429 select CPU_SUPPORTS_HIGHMEM
1431 Please make sure to pick the right CPU type. Linux/MIPS is not
1432 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1433 *not* work on R4000 machines and vice versa. However, since most
1434 of the supported machines have an R4000 (or similar) CPU, R4x00
1435 might be a safe bet. If the resulting kernel does not work,
1436 try to recompile with R3000.
1440 depends on SYS_HAS_CPU_TX39XX
1441 select CPU_SUPPORTS_32BIT_KERNEL
1445 depends on SYS_HAS_CPU_VR41XX
1446 select CPU_SUPPORTS_32BIT_KERNEL
1447 select CPU_SUPPORTS_64BIT_KERNEL
1449 The options selects support for the NEC VR4100 series of processors.
1450 Only choose this option if you have one of these processors as a
1451 kernel built with this option will not run on any other type of
1452 processor or vice versa.
1456 depends on SYS_HAS_CPU_R4300
1457 select CPU_SUPPORTS_32BIT_KERNEL
1458 select CPU_SUPPORTS_64BIT_KERNEL
1460 MIPS Technologies R4300-series processors.
1464 depends on SYS_HAS_CPU_R4X00
1465 select CPU_SUPPORTS_32BIT_KERNEL
1466 select CPU_SUPPORTS_64BIT_KERNEL
1467 select CPU_SUPPORTS_HUGEPAGES
1469 MIPS Technologies R4000-series processors other than 4300, including
1470 the R4000, R4400, R4600, and 4700.
1474 depends on SYS_HAS_CPU_TX49XX
1475 select CPU_HAS_PREFETCH
1476 select CPU_SUPPORTS_32BIT_KERNEL
1477 select CPU_SUPPORTS_64BIT_KERNEL
1478 select CPU_SUPPORTS_HUGEPAGES
1482 depends on SYS_HAS_CPU_R5000
1483 select CPU_SUPPORTS_32BIT_KERNEL
1484 select CPU_SUPPORTS_64BIT_KERNEL
1485 select CPU_SUPPORTS_HUGEPAGES
1487 MIPS Technologies R5000-series processors other than the Nevada.
1491 depends on SYS_HAS_CPU_R5432
1492 select CPU_SUPPORTS_32BIT_KERNEL
1493 select CPU_SUPPORTS_64BIT_KERNEL
1494 select CPU_SUPPORTS_HUGEPAGES
1498 depends on SYS_HAS_CPU_R5500
1499 select CPU_SUPPORTS_32BIT_KERNEL
1500 select CPU_SUPPORTS_64BIT_KERNEL
1501 select CPU_SUPPORTS_HUGEPAGES
1503 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1508 depends on SYS_HAS_CPU_R6000
1509 select CPU_SUPPORTS_32BIT_KERNEL
1511 MIPS Technologies R6000 and R6000A series processors. Note these
1512 processors are extremely rare and the support for them is incomplete.
1516 depends on SYS_HAS_CPU_NEVADA
1517 select CPU_SUPPORTS_32BIT_KERNEL
1518 select CPU_SUPPORTS_64BIT_KERNEL
1519 select CPU_SUPPORTS_HUGEPAGES
1521 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1525 depends on SYS_HAS_CPU_R8000
1526 select CPU_HAS_PREFETCH
1527 select CPU_SUPPORTS_64BIT_KERNEL
1529 MIPS Technologies R8000 processors. Note these processors are
1530 uncommon and the support for them is incomplete.
1534 depends on SYS_HAS_CPU_R10000
1535 select CPU_HAS_PREFETCH
1536 select CPU_SUPPORTS_32BIT_KERNEL
1537 select CPU_SUPPORTS_64BIT_KERNEL
1538 select CPU_SUPPORTS_HIGHMEM
1539 select CPU_SUPPORTS_HUGEPAGES
1541 MIPS Technologies R10000-series processors.
1545 depends on SYS_HAS_CPU_RM7000
1546 select CPU_HAS_PREFETCH
1547 select CPU_SUPPORTS_32BIT_KERNEL
1548 select CPU_SUPPORTS_64BIT_KERNEL
1549 select CPU_SUPPORTS_HIGHMEM
1550 select CPU_SUPPORTS_HUGEPAGES
1554 depends on SYS_HAS_CPU_SB1
1555 select CPU_SUPPORTS_32BIT_KERNEL
1556 select CPU_SUPPORTS_64BIT_KERNEL
1557 select CPU_SUPPORTS_HIGHMEM
1558 select CPU_SUPPORTS_HUGEPAGES
1559 select WEAK_ORDERING
1561 config CPU_CAVIUM_OCTEON
1562 bool "Cavium Octeon processor"
1563 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1564 select CPU_HAS_PREFETCH
1565 select CPU_SUPPORTS_64BIT_KERNEL
1566 select WEAK_ORDERING
1567 select CPU_SUPPORTS_HIGHMEM
1568 select CPU_SUPPORTS_HUGEPAGES
1569 select USB_EHCI_BIG_ENDIAN_MMIO
1570 select MIPS_L1_CACHE_SHIFT_7
1572 The Cavium Octeon processor is a highly integrated chip containing
1573 many ethernet hardware widgets for networking tasks. The processor
1574 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1575 Full details can be found at http://www.caviumnetworks.com.
1578 bool "Broadcom BMIPS"
1579 depends on SYS_HAS_CPU_BMIPS
1581 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1582 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1583 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1584 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1585 select CPU_SUPPORTS_32BIT_KERNEL
1586 select DMA_NONCOHERENT
1588 select SWAP_IO_SPACE
1589 select WEAK_ORDERING
1590 select CPU_SUPPORTS_HIGHMEM
1591 select CPU_HAS_PREFETCH
1593 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1596 bool "Netlogic XLR SoC"
1597 depends on SYS_HAS_CPU_XLR
1598 select CPU_SUPPORTS_32BIT_KERNEL
1599 select CPU_SUPPORTS_64BIT_KERNEL
1600 select CPU_SUPPORTS_HIGHMEM
1601 select CPU_SUPPORTS_HUGEPAGES
1602 select WEAK_ORDERING
1603 select WEAK_REORDERING_BEYOND_LLSC
1605 Netlogic Microsystems XLR/XLS processors.
1608 bool "Netlogic XLP SoC"
1609 depends on SYS_HAS_CPU_XLP
1610 select CPU_SUPPORTS_32BIT_KERNEL
1611 select CPU_SUPPORTS_64BIT_KERNEL
1612 select CPU_SUPPORTS_HIGHMEM
1613 select WEAK_ORDERING
1614 select WEAK_REORDERING_BEYOND_LLSC
1615 select CPU_HAS_PREFETCH
1617 select CPU_SUPPORTS_HUGEPAGES
1619 Netlogic Microsystems XLP processors.
1622 config CPU_MIPS32_3_5_FEATURES
1623 bool "MIPS32 Release 3.5 Features"
1624 depends on SYS_HAS_CPU_MIPS32_R3_5
1625 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1627 Choose this option to build a kernel for release 2 or later of the
1628 MIPS32 architecture including features from the 3.5 release such as
1629 support for Enhanced Virtual Addressing (EVA).
1631 config CPU_MIPS32_3_5_EVA
1632 bool "Enhanced Virtual Addressing (EVA)"
1633 depends on CPU_MIPS32_3_5_FEATURES
1637 Choose this option if you want to enable the Enhanced Virtual
1638 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1639 One of its primary benefits is an increase in the maximum size
1640 of lowmem (up to 3GB). If unsure, say 'N' here.
1642 config CPU_MIPS32_R5_FEATURES
1643 bool "MIPS32 Release 5 Features"
1644 depends on SYS_HAS_CPU_MIPS32_R5
1645 depends on CPU_MIPS32_R2
1647 Choose this option to build a kernel for release 2 or later of the
1648 MIPS32 architecture including features from release 5 such as
1649 support for Extended Physical Addressing (XPA).
1651 config CPU_MIPS32_R5_XPA
1652 bool "Extended Physical Addressing (XPA)"
1653 depends on CPU_MIPS32_R5_FEATURES
1655 depends on !PAGE_SIZE_4KB
1656 depends on SYS_SUPPORTS_HIGHMEM
1659 select ARCH_PHYS_ADDR_T_64BIT
1662 Choose this option if you want to enable the Extended Physical
1663 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1664 benefit is to increase physical addressing equal to or greater
1665 than 40 bits. Note that this has the side effect of turning on
1666 64-bit addressing which in turn makes the PTEs 64-bit in size.
1667 If unsure, say 'N' here.
1670 config CPU_NOP_WORKAROUNDS
1673 config CPU_JUMP_WORKAROUNDS
1676 config CPU_LOONGSON2F_WORKAROUNDS
1677 bool "Loongson 2F Workarounds"
1679 select CPU_NOP_WORKAROUNDS
1680 select CPU_JUMP_WORKAROUNDS
1682 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1683 require workarounds. Without workarounds the system may hang
1684 unexpectedly. For more information please refer to the gas
1685 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1687 Loongson 2F03 and later have fixed these issues and no workarounds
1688 are needed. The workarounds have no significant side effect on them
1689 but may decrease the performance of the system so this option should
1690 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1693 If unsure, please say Y.
1694 endif # CPU_LOONGSON2F
1696 config SYS_SUPPORTS_ZBOOT
1698 select HAVE_KERNEL_GZIP
1699 select HAVE_KERNEL_BZIP2
1700 select HAVE_KERNEL_LZ4
1701 select HAVE_KERNEL_LZMA
1702 select HAVE_KERNEL_LZO
1703 select HAVE_KERNEL_XZ
1705 config SYS_SUPPORTS_ZBOOT_UART16550
1707 select SYS_SUPPORTS_ZBOOT
1709 config CPU_LOONGSON2
1711 select CPU_SUPPORTS_32BIT_KERNEL
1712 select CPU_SUPPORTS_64BIT_KERNEL
1713 select CPU_SUPPORTS_HIGHMEM
1714 select CPU_SUPPORTS_HUGEPAGES
1716 config CPU_LOONGSON1
1720 select CPU_HAS_PREFETCH
1721 select CPU_SUPPORTS_32BIT_KERNEL
1722 select CPU_SUPPORTS_HIGHMEM
1723 select CPU_SUPPORTS_CPUFREQ
1725 config CPU_BMIPS32_3300
1726 select SMP_UP if SMP
1729 config CPU_BMIPS4350
1731 select SYS_SUPPORTS_SMP
1732 select SYS_SUPPORTS_HOTPLUG_CPU
1734 config CPU_BMIPS4380
1736 select MIPS_L1_CACHE_SHIFT_6
1737 select SYS_SUPPORTS_SMP
1738 select SYS_SUPPORTS_HOTPLUG_CPU
1740 config CPU_BMIPS5000
1742 select MIPS_CPU_SCACHE
1743 select MIPS_L1_CACHE_SHIFT_7
1744 select SYS_SUPPORTS_SMP
1745 select SYS_SUPPORTS_HOTPLUG_CPU
1747 config SYS_HAS_CPU_LOONGSON3
1749 select CPU_SUPPORTS_CPUFREQ
1751 config SYS_HAS_CPU_LOONGSON2E
1754 config SYS_HAS_CPU_LOONGSON2F
1756 select CPU_SUPPORTS_CPUFREQ
1757 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1758 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1760 config SYS_HAS_CPU_LOONGSON1B
1763 config SYS_HAS_CPU_MIPS32_R1
1766 config SYS_HAS_CPU_MIPS32_R2
1769 config SYS_HAS_CPU_MIPS32_R3_5
1772 config SYS_HAS_CPU_MIPS32_R5
1775 config SYS_HAS_CPU_MIPS32_R6
1778 config SYS_HAS_CPU_MIPS64_R1
1781 config SYS_HAS_CPU_MIPS64_R2
1784 config SYS_HAS_CPU_MIPS64_R6
1787 config SYS_HAS_CPU_R3000
1790 config SYS_HAS_CPU_TX39XX
1793 config SYS_HAS_CPU_VR41XX
1796 config SYS_HAS_CPU_R4300
1799 config SYS_HAS_CPU_R4X00
1802 config SYS_HAS_CPU_TX49XX
1805 config SYS_HAS_CPU_R5000
1808 config SYS_HAS_CPU_R5432
1811 config SYS_HAS_CPU_R5500
1814 config SYS_HAS_CPU_R6000
1817 config SYS_HAS_CPU_NEVADA
1820 config SYS_HAS_CPU_R8000
1823 config SYS_HAS_CPU_R10000
1826 config SYS_HAS_CPU_RM7000
1829 config SYS_HAS_CPU_SB1
1832 config SYS_HAS_CPU_CAVIUM_OCTEON
1835 config SYS_HAS_CPU_BMIPS
1838 config SYS_HAS_CPU_BMIPS32_3300
1840 select SYS_HAS_CPU_BMIPS
1842 config SYS_HAS_CPU_BMIPS4350
1844 select SYS_HAS_CPU_BMIPS
1846 config SYS_HAS_CPU_BMIPS4380
1848 select SYS_HAS_CPU_BMIPS
1850 config SYS_HAS_CPU_BMIPS5000
1852 select SYS_HAS_CPU_BMIPS
1854 config SYS_HAS_CPU_XLR
1857 config SYS_HAS_CPU_XLP
1860 config MIPS_MALTA_PM
1861 depends on MIPS_MALTA
1867 # CPU may reorder R->R, R->W, W->R, W->W
1868 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1870 config WEAK_ORDERING
1874 # CPU may reorder reads and writes beyond LL/SC
1875 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1877 config WEAK_REORDERING_BEYOND_LLSC
1882 # These two indicate any level of the MIPS32 and MIPS64 architecture
1886 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1890 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1893 # These two indicate the revision of the architecture, either Release 1 or Release 2
1897 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1901 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1906 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1915 config SYS_SUPPORTS_32BIT_KERNEL
1917 config SYS_SUPPORTS_64BIT_KERNEL
1919 config CPU_SUPPORTS_32BIT_KERNEL
1921 config CPU_SUPPORTS_64BIT_KERNEL
1923 config CPU_SUPPORTS_CPUFREQ
1925 config CPU_SUPPORTS_ADDRWINCFG
1927 config CPU_SUPPORTS_HUGEPAGES
1929 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1931 config MIPS_PGD_C0_CONTEXT
1933 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1936 # Set to y for ptrace access to watch registers.
1938 config HARDWARE_WATCHPOINTS
1940 default y if CPU_MIPSR1 || CPU_MIPSR2
1945 prompt "Kernel code model"
1947 You should only select this option if you have a workload that
1948 actually benefits from 64-bit processing or if your machine has
1949 large memory. You will only be presented a single option in this
1950 menu if your system does not support both 32-bit and 64-bit kernels.
1953 bool "32-bit kernel"
1954 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1957 Select this option if you want to build a 32-bit kernel.
1959 bool "64-bit kernel"
1960 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1962 Select this option if you want to build a 64-bit kernel.
1967 bool "KVM Guest Kernel"
1968 depends on BROKEN_ON_SMP
1970 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1972 config KVM_GUEST_TIMER_FREQ
1973 int "Count/Compare Timer Frequency (MHz)"
1974 depends on KVM_GUEST
1977 Set this to non-zero if building a guest kernel for KVM to skip RTC
1978 emulation when determining guest CPU Frequency. Instead, the guest's
1979 timer frequency is specified directly.
1982 prompt "Kernel page size"
1983 default PAGE_SIZE_4KB
1985 config PAGE_SIZE_4KB
1987 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
1989 This option select the standard 4kB Linux page size. On some
1990 R3000-family processors this is the only available page size. Using
1991 4kB page size will minimize memory consumption and is therefore
1992 recommended for low memory systems.
1994 config PAGE_SIZE_8KB
1996 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1998 Using 8kB page size will result in higher performance kernel at
1999 the price of higher memory consumption. This option is available
2000 only on R8000 and cnMIPS processors. Note that you will need a
2001 suitable Linux distribution to support this.
2003 config PAGE_SIZE_16KB
2005 depends on !CPU_R3000 && !CPU_TX39XX
2007 Using 16kB page size will result in higher performance kernel at
2008 the price of higher memory consumption. This option is available on
2009 all non-R3000 family processors. Note that you will need a suitable
2010 Linux distribution to support this.
2012 config PAGE_SIZE_32KB
2014 depends on CPU_CAVIUM_OCTEON
2016 Using 32kB page size will result in higher performance kernel at
2017 the price of higher memory consumption. This option is available
2018 only on cnMIPS cores. Note that you will need a suitable Linux
2019 distribution to support this.
2021 config PAGE_SIZE_64KB
2023 depends on !CPU_R3000 && !CPU_TX39XX
2025 Using 64kB page size will result in higher performance kernel at
2026 the price of higher memory consumption. This option is available on
2027 all non-R3000 family processor. Not that at the time of this
2028 writing this option is still high experimental.
2032 config FORCE_MAX_ZONEORDER
2033 int "Maximum zone order"
2034 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2035 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2036 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2037 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2038 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2039 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2043 The kernel memory allocator divides physically contiguous memory
2044 blocks into "zones", where each zone is a power of two number of
2045 pages. This option selects the largest power of two that the kernel
2046 keeps in the memory allocator. If you need to allocate very large
2047 blocks of physically contiguous memory, then you may need to
2048 increase this value.
2050 This config option is actually maximum order plus one. For example,
2051 a value of 11 means that the largest free memory block is 2^10 pages.
2053 The page size is not necessarily 4KB. Keep this in mind
2054 when choosing a value for this option.
2059 config IP22_CPU_SCACHE
2064 # Support for a MIPS32 / MIPS64 style S-caches
2066 config MIPS_CPU_SCACHE
2070 config R5000_CPU_SCACHE
2074 config RM7000_CPU_SCACHE
2078 config SIBYTE_DMA_PAGEOPS
2079 bool "Use DMA to clear/copy pages"
2082 Instead of using the CPU to zero and copy pages, use a Data Mover
2083 channel. These DMA channels are otherwise unused by the standard
2084 SiByte Linux port. Seems to give a small performance benefit.
2086 config CPU_HAS_PREFETCH
2089 config CPU_GENERIC_DUMP_TLB
2091 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2095 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2097 config CPU_R4K_CACHE_TLB
2099 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2102 bool "MIPS MT SMP support (1 TC on each available VPE)"
2103 depends on SYS_SUPPORTS_MULTITHREADING
2104 select CPU_MIPSR2_IRQ_VI
2105 select CPU_MIPSR2_IRQ_EI
2111 select SYS_SUPPORTS_SMP
2112 select SYS_SUPPORTS_SCHED_SMT
2113 select MIPS_PERF_SHARED_TC_COUNTERS
2115 This is a kernel model which is known as SMVP. This is supported
2116 on cores with the MT ASE and uses the available VPEs to implement
2117 virtual processors which supports SMP. This is equivalent to the
2118 Intel Hyperthreading feature. For further information go to
2119 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2125 bool "SMT (multithreading) scheduler support"
2126 depends on SYS_SUPPORTS_SCHED_SMT
2129 SMT scheduler support improves the CPU scheduler's decision making
2130 when dealing with MIPS MT enabled cores at a cost of slightly
2131 increased overhead in some places. If unsure say N here.
2133 config SYS_SUPPORTS_SCHED_SMT
2136 config SYS_SUPPORTS_MULTITHREADING
2139 config MIPS_MT_FPAFF
2140 bool "Dynamic FPU affinity for FP-intensive threads"
2142 depends on MIPS_MT_SMP
2144 config MIPSR2_TO_R6_EMULATOR
2145 bool "MIPS R2-to-R6 emulator"
2146 depends on CPU_MIPSR6 && !SMP
2149 Choose this option if you want to run non-R6 MIPS userland code.
2150 Even if you say 'Y' here, the emulator will still be disabled by
2151 default. You can enable it using the 'mipsr2emu' kernel option.
2152 The only reason this is a build-time option is to save ~14K from the
2154 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2155 depends on SMP && CPU_MIPSR6
2157 config MIPS_VPE_LOADER
2158 bool "VPE loader support."
2159 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2160 select CPU_MIPSR2_IRQ_VI
2161 select CPU_MIPSR2_IRQ_EI
2164 Includes a loader for loading an elf relocatable object
2165 onto another VPE and running it.
2167 config MIPS_VPE_LOADER_CMP
2170 depends on MIPS_VPE_LOADER && MIPS_CMP
2172 config MIPS_VPE_LOADER_MT
2175 depends on MIPS_VPE_LOADER && !MIPS_CMP
2177 config MIPS_VPE_LOADER_TOM
2178 bool "Load VPE program into memory hidden from linux"
2179 depends on MIPS_VPE_LOADER
2182 The loader can use memory that is present but has been hidden from
2183 Linux using the kernel command line option "mem=xxMB". It's up to
2184 you to ensure the amount you put in the option and the space your
2185 program requires is less or equal to the amount physically present.
2187 config MIPS_VPE_APSP_API
2188 bool "Enable support for AP/SP API (RTLX)"
2189 depends on MIPS_VPE_LOADER
2192 config MIPS_VPE_APSP_API_CMP
2195 depends on MIPS_VPE_APSP_API && MIPS_CMP
2197 config MIPS_VPE_APSP_API_MT
2200 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2203 bool "MIPS CMP framework support (DEPRECATED)"
2204 depends on SYS_SUPPORTS_MIPS_CMP
2208 select SYS_SUPPORTS_SMP
2209 select WEAK_ORDERING
2212 Select this if you are using a bootloader which implements the "CMP
2213 framework" protocol (ie. YAMON) and want your kernel to make use of
2214 its ability to start secondary CPUs.
2216 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2220 bool "MIPS Coherent Processing System support"
2221 depends on SYS_SUPPORTS_MIPS_CPS && !64BIT
2224 select MIPS_CPS_PM if HOTPLUG_CPU
2227 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2228 select SYS_SUPPORTS_HOTPLUG_CPU
2229 select SYS_SUPPORTS_SMP
2230 select WEAK_ORDERING
2232 Select this if you wish to run an SMP kernel across multiple cores
2233 within a MIPS Coherent Processing System. When this option is
2234 enabled the kernel will probe for other cores and boot them with
2235 no external assistance. It is safe to enable this when hardware
2236 support is unavailable.
2252 config SB1_PASS_1_WORKAROUNDS
2254 depends on CPU_SB1_PASS_1
2257 config SB1_PASS_2_WORKAROUNDS
2259 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2262 config SB1_PASS_2_1_WORKAROUNDS
2264 depends on CPU_SB1 && CPU_SB1_PASS_2
2268 config ARCH_PHYS_ADDR_T_64BIT
2272 prompt "SmartMIPS or microMIPS ASE support"
2274 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2277 Select this if you want neither microMIPS nor SmartMIPS support
2279 config CPU_HAS_SMARTMIPS
2280 depends on SYS_SUPPORTS_SMARTMIPS
2283 SmartMIPS is a extension of the MIPS32 architecture aimed at
2284 increased security at both hardware and software level for
2285 smartcards. Enabling this option will allow proper use of the
2286 SmartMIPS instructions by Linux applications. However a kernel with
2287 this option will not work on a MIPS core without SmartMIPS core. If
2288 you don't know you probably don't have SmartMIPS and should say N
2291 config CPU_MICROMIPS
2292 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2295 When this option is enabled the kernel will be built using the
2301 bool "Support for the MIPS SIMD Architecture (EXPERIMENTAL)"
2302 depends on CPU_SUPPORTS_MSA
2303 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2305 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2306 and a set of SIMD instructions to operate on them. When this option
2307 is enabled the kernel will support allocating & switching MSA
2308 vector register contexts. If you know that your kernel will only be
2309 running on CPUs which do not support MSA or that your userland will
2310 not be making use of it then you may wish to say N here to reduce
2311 the size & complexity of your kernel.
2322 # Vectored interrupt mode is an R2 feature
2324 config CPU_MIPSR2_IRQ_VI
2328 # Extended interrupt mode is an R2 feature
2330 config CPU_MIPSR2_IRQ_EI
2335 depends on !CPU_R3000
2341 config CPU_DADDI_WORKAROUNDS
2344 config CPU_R4000_WORKAROUNDS
2346 select CPU_R4400_WORKAROUNDS
2348 config CPU_R4400_WORKAROUNDS
2352 # - Highmem only makes sense for the 32-bit kernel.
2353 # - The current highmem code will only work properly on physically indexed
2354 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2355 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2356 # moment we protect the user and offer the highmem option only on machines
2357 # where it's known to be safe. This will not offer highmem on a few systems
2358 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2359 # indexed CPUs but we're playing safe.
2360 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2361 # know they might have memory configurations that could make use of highmem
2365 bool "High Memory Support"
2366 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2368 config CPU_SUPPORTS_HIGHMEM
2371 config SYS_SUPPORTS_HIGHMEM
2374 config SYS_SUPPORTS_SMARTMIPS
2377 config SYS_SUPPORTS_MICROMIPS
2380 config SYS_SUPPORTS_MIPS16
2383 This option must be set if a kernel might be executed on a MIPS16-
2384 enabled CPU even if MIPS16 is not actually being used. In other
2385 words, it makes the kernel MIPS16-tolerant.
2387 config CPU_SUPPORTS_MSA
2390 config ARCH_FLATMEM_ENABLE
2392 depends on !NUMA && !CPU_LOONGSON2
2394 config ARCH_DISCONTIGMEM_ENABLE
2396 default y if SGI_IP27
2398 Say Y to support efficient handling of discontiguous physical memory,
2399 for architectures which are either NUMA (Non-Uniform Memory Access)
2400 or have huge holes in the physical address space for other reasons.
2401 See <file:Documentation/vm/numa> for more.
2403 config ARCH_SPARSEMEM_ENABLE
2405 select SPARSEMEM_STATIC
2409 depends on SYS_SUPPORTS_NUMA
2411 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2412 Access). This option improves performance on systems with more
2413 than two nodes; on two node systems it is generally better to
2414 leave it disabled; on single node systems disable this option
2417 config SYS_SUPPORTS_NUMA
2423 depends on NEED_MULTIPLE_NODES
2425 config HW_PERF_EVENTS
2426 bool "Enable hardware performance counter support for perf events"
2427 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2430 Enable hardware performance counter support for perf events. If
2431 disabled, perf events will use software events only.
2436 bool "Multi-Processing support"
2437 depends on SYS_SUPPORTS_SMP
2439 This enables support for systems with more than one CPU. If you have
2440 a system with only one CPU, say N. If you have a system with more
2441 than one CPU, say Y.
2443 If you say N here, the kernel will run on uni- and multiprocessor
2444 machines, but will use only one CPU of a multiprocessor machine. If
2445 you say Y here, the kernel will run on many, but not all,
2446 uniprocessor machines. On a uniprocessor machine, the kernel
2447 will run faster if you say N here.
2449 People using multiprocessor machines who say Y here should also say
2450 Y to "Enhanced Real Time Clock Support", below.
2452 See also the SMP-HOWTO available at
2453 <http://www.tldp.org/docs.html#howto>.
2455 If you don't know what to do here, say N.
2460 config SYS_SUPPORTS_MIPS_CMP
2463 config SYS_SUPPORTS_MIPS_CPS
2466 config SYS_SUPPORTS_SMP
2469 config NR_CPUS_DEFAULT_4
2472 config NR_CPUS_DEFAULT_8
2475 config NR_CPUS_DEFAULT_16
2478 config NR_CPUS_DEFAULT_32
2481 config NR_CPUS_DEFAULT_64
2485 int "Maximum number of CPUs (2-256)"
2488 default "4" if NR_CPUS_DEFAULT_4
2489 default "8" if NR_CPUS_DEFAULT_8
2490 default "16" if NR_CPUS_DEFAULT_16
2491 default "32" if NR_CPUS_DEFAULT_32
2492 default "64" if NR_CPUS_DEFAULT_64
2494 This allows you to specify the maximum number of CPUs which this
2495 kernel will support. The maximum supported value is 32 for 32-bit
2496 kernel and 64 for 64-bit kernels; the minimum value which makes
2497 sense is 1 for Qemu (useful only for kernel debugging purposes)
2498 and 2 for all others.
2500 This is purely to save memory - each supported CPU adds
2501 approximately eight kilobytes to the kernel image. For best
2502 performance should round up your number of processors to the next
2505 config MIPS_PERF_SHARED_TC_COUNTERS
2509 # Timer Interrupt Frequency Configuration
2513 prompt "Timer frequency"
2516 Allows the configuration of the timer frequency.
2519 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2522 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2525 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2528 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2531 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2534 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2537 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2541 config SYS_SUPPORTS_48HZ
2544 config SYS_SUPPORTS_100HZ
2547 config SYS_SUPPORTS_128HZ
2550 config SYS_SUPPORTS_250HZ
2553 config SYS_SUPPORTS_256HZ
2556 config SYS_SUPPORTS_1000HZ
2559 config SYS_SUPPORTS_1024HZ
2562 config SYS_SUPPORTS_ARBIT_HZ
2564 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2565 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2566 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2567 !SYS_SUPPORTS_1024HZ
2572 default 100 if HZ_100
2573 default 128 if HZ_128
2574 default 250 if HZ_250
2575 default 256 if HZ_256
2576 default 1000 if HZ_1000
2577 default 1024 if HZ_1024
2580 def_bool HIGH_RES_TIMERS
2582 source "kernel/Kconfig.preempt"
2585 bool "Kexec system call"
2587 kexec is a system call that implements the ability to shutdown your
2588 current kernel, and to start another kernel. It is like a reboot
2589 but it is independent of the system firmware. And like a reboot
2590 you can start any kernel with it, not just Linux.
2592 The name comes from the similarity to the exec system call.
2594 It is an ongoing process to be certain the hardware in a machine
2595 is properly shutdown, so do not be surprised if this code does not
2596 initially work for you. As of this writing the exact hardware
2597 interface is strongly in flux, so no good recommendation can be
2601 bool "Kernel crash dumps"
2603 Generate crash dump after being started by kexec.
2604 This should be normally only set in special crash dump kernels
2605 which are loaded in the main kernel with kexec-tools into
2606 a specially reserved region and then later executed after
2607 a crash by kdump/kexec. The crash dump kernel must be compiled
2608 to a memory address not used by the main kernel or firmware using
2611 config PHYSICAL_START
2612 hex "Physical address where the kernel is loaded"
2613 default "0xffffffff84000000" if 64BIT
2614 default "0x84000000" if 32BIT
2615 depends on CRASH_DUMP
2617 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2618 If you plan to use kernel for capturing the crash dump change
2619 this value to start of the reserved region (the "X" value as
2620 specified in the "crashkernel=YM@XM" command line boot parameter
2621 passed to the panic-ed kernel).
2624 bool "Enable seccomp to safely compute untrusted bytecode"
2628 This kernel feature is useful for number crunching applications
2629 that may need to compute untrusted bytecode during their
2630 execution. By using pipes or other transports made available to
2631 the process as file descriptors supporting the read/write
2632 syscalls, it's possible to isolate those applications in
2633 their own address space using seccomp. Once seccomp is
2634 enabled via /proc/<pid>/seccomp, it cannot be disabled
2635 and the task is only allowed to execute a few safe syscalls
2636 defined by each seccomp mode.
2638 If unsure, say Y. Only embedded should say N here.
2640 config MIPS_O32_FP64_SUPPORT
2641 bool "Support for O32 binaries using 64-bit FP (EXPERIMENTAL)"
2642 depends on 32BIT || MIPS32_O32
2644 When this is enabled, the kernel will support use of 64-bit floating
2645 point registers with binaries using the O32 ABI along with the
2646 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2647 32-bit MIPS systems this support is at the cost of increasing the
2648 size and complexity of the compiled FPU emulator. Thus if you are
2649 running a MIPS32 system and know that none of your userland binaries
2650 will require 64-bit floating point, you may wish to reduce the size
2651 of your kernel & potentially improve FP emulation performance by
2654 Although binutils currently supports use of this flag the details
2655 concerning its effect upon the O32 ABI in userland are still being
2656 worked on. In order to avoid userland becoming dependant upon current
2657 behaviour before the details have been finalised, this option should
2658 be considered experimental and only enabled by those working upon
2666 select OF_EARLY_FLATTREE
2674 config LOCKDEP_SUPPORT
2678 config STACKTRACE_SUPPORT
2682 config PGTABLE_LEVELS
2684 default 3 if 64BIT && !PAGE_SIZE_64KB
2687 source "init/Kconfig"
2689 source "kernel/Kconfig.freezer"
2691 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2699 bool "Support for PCI controller"
2700 depends on HW_HAS_PCI
2702 select NO_GENERIC_PCI_IOPORT_MAP
2704 Find out whether you have a PCI motherboard. PCI is the name of a
2705 bus system, i.e. the way the CPU talks to the other stuff inside
2706 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2710 bool "Support for HT-linked PCI"
2712 depends on CPU_LOONGSON3
2716 Loongson family machines use Hyper-Transport bus for inter-core
2717 connection and device connection. The PCI bus is a subordinate
2718 linked at HT. Choose Y for Loongson-3 based machines.
2723 source "drivers/pci/Kconfig"
2725 source "drivers/pci/pcie/Kconfig"
2728 # ISA support is now enabled via select. Too many systems still have the one
2729 # or other ISA chip on the board that users don't know about so don't expect
2730 # users to choose the right thing ...
2737 depends on HW_HAS_EISA
2739 select GENERIC_ISA_DMA
2741 The Extended Industry Standard Architecture (EISA) bus was
2742 developed as an open alternative to the IBM MicroChannel bus.
2744 The EISA bus provided some of the features of the IBM MicroChannel
2745 bus while maintaining backward compatibility with cards made for
2746 the older ISA bus. The EISA bus saw limited use between 1988 and
2747 1995 when it was made obsolete by the PCI bus.
2749 Say Y here if you are building a kernel for an EISA-based machine.
2753 source "drivers/eisa/Kconfig"
2756 bool "TURBOchannel support"
2757 depends on MACH_DECSTATION
2759 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2760 processors. TURBOchannel programming specifications are available
2762 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2764 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2765 Linux driver support status is documented at:
2766 <http://www.linux-mips.org/wiki/DECstation>
2776 select MIPS_EXTERNAL_TIMER
2784 source "drivers/pcmcia/Kconfig"
2786 source "drivers/pci/hotplug/Kconfig"
2789 tristate "RapidIO support"
2793 If you say Y here, the kernel will include drivers and
2794 infrastructure code to support RapidIO interconnect devices.
2796 source "drivers/rapidio/Kconfig"
2800 menu "Executable file formats"
2802 source "fs/Kconfig.binfmt"
2807 config MIPS32_COMPAT
2813 config SYSVIPC_COMPAT
2817 bool "Kernel support for o32 binaries"
2819 select ARCH_WANT_OLD_COMPAT_IPC
2821 select MIPS32_COMPAT
2822 select SYSVIPC_COMPAT if SYSVIPC
2824 Select this option if you want to run o32 binaries. These are pure
2825 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2826 existing binaries are in this format.
2831 bool "Kernel support for n32 binaries"
2834 select MIPS32_COMPAT
2835 select SYSVIPC_COMPAT if SYSVIPC
2837 Select this option if you want to run n32 binaries. These are
2838 64-bit binaries using 32-bit quantities for addressing and certain
2839 data that would normally be 64-bit. They are used in special
2846 default y if MIPS32_O32 || MIPS32_N32
2850 menu "Power management options"
2852 config ARCH_HIBERNATION_POSSIBLE
2854 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2856 config ARCH_SUSPEND_POSSIBLE
2858 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2860 source "kernel/power/Kconfig"
2864 config MIPS_EXTERNAL_TIMER
2867 menu "CPU Power Management"
2869 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2870 source "drivers/cpufreq/Kconfig"
2873 source "drivers/cpuidle/Kconfig"
2877 source "net/Kconfig"
2879 source "drivers/Kconfig"
2881 source "drivers/firmware/Kconfig"
2885 source "arch/mips/Kconfig.debug"
2887 source "security/Kconfig"
2889 source "crypto/Kconfig"
2891 source "lib/Kconfig"
2893 source "arch/mips/kvm/Kconfig"