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
300 select SYS_HAS_EARLY_PRINTK
302 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
1165 config PCI_GT64XXX_PCI0
1168 config NO_EXCEPT_FILL
1175 select DMA_NONCOHERENT
1177 select SWAP_IO_SPACE
1178 select SYS_HAS_CPU_R5500
1179 select SYS_SUPPORTS_32BIT_KERNEL
1180 select SYS_SUPPORTS_64BIT_KERNEL
1181 select SYS_SUPPORTS_BIG_ENDIAN
1188 select DMA_NONCOHERENT
1189 select SYS_HAS_CPU_MIPS32_R2
1190 select SYS_SUPPORTS_32BIT_KERNEL
1191 select SYS_SUPPORTS_LITTLE_ENDIAN
1192 select SYS_SUPPORTS_BIG_ENDIAN
1193 select SYS_SUPPORTS_MIPS16
1194 select CPU_MIPSR2_IRQ_VI
1203 config SWAP_IO_SPACE
1206 config SGI_HAS_INDYDOG
1218 config SGI_HAS_ZILOG
1221 config SGI_HAS_I8042
1224 config DEFAULT_SGI_PARTITION
1236 config MIPS_L1_CACHE_SHIFT_4
1239 config MIPS_L1_CACHE_SHIFT_5
1242 config MIPS_L1_CACHE_SHIFT_6
1245 config MIPS_L1_CACHE_SHIFT_7
1248 config MIPS_L1_CACHE_SHIFT
1250 default "7" if MIPS_L1_CACHE_SHIFT_7
1251 default "6" if MIPS_L1_CACHE_SHIFT_6
1252 default "5" if MIPS_L1_CACHE_SHIFT_5
1253 default "4" if MIPS_L1_CACHE_SHIFT_4
1256 config HAVE_STD_PC_SERIAL_PORT
1260 bool "ARC console support"
1261 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1265 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1270 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1279 menu "CPU selection"
1285 config CPU_LOONGSON3
1286 bool "Loongson 3 CPU"
1287 depends on SYS_HAS_CPU_LOONGSON3
1288 select CPU_SUPPORTS_64BIT_KERNEL
1289 select CPU_SUPPORTS_HIGHMEM
1290 select CPU_SUPPORTS_HUGEPAGES
1291 select WEAK_ORDERING
1292 select WEAK_REORDERING_BEYOND_LLSC
1293 select ARCH_REQUIRE_GPIOLIB
1295 The Loongson 3 processor implements the MIPS64R2 instruction
1296 set with many extensions.
1298 config CPU_LOONGSON2E
1300 depends on SYS_HAS_CPU_LOONGSON2E
1301 select CPU_LOONGSON2
1303 The Loongson 2E processor implements the MIPS III instruction set
1304 with many extensions.
1306 It has an internal FPGA northbridge, which is compatible to
1309 config CPU_LOONGSON2F
1311 depends on SYS_HAS_CPU_LOONGSON2F
1312 select CPU_LOONGSON2
1313 select ARCH_REQUIRE_GPIOLIB
1315 The Loongson 2F processor implements the MIPS III instruction set
1316 with many extensions.
1318 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1319 have a similar programming interface with FPGA northbridge used in
1322 config CPU_LOONGSON1B
1324 depends on SYS_HAS_CPU_LOONGSON1B
1325 select CPU_LOONGSON1
1327 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1328 release 2 instruction set.
1330 config CPU_MIPS32_R1
1331 bool "MIPS32 Release 1"
1332 depends on SYS_HAS_CPU_MIPS32_R1
1333 select CPU_HAS_PREFETCH
1334 select CPU_SUPPORTS_32BIT_KERNEL
1335 select CPU_SUPPORTS_HIGHMEM
1337 Choose this option to build a kernel for release 1 or later of the
1338 MIPS32 architecture. Most modern embedded systems with a 32-bit
1339 MIPS processor are based on a MIPS32 processor. If you know the
1340 specific type of processor in your system, choose those that one
1341 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1342 Release 2 of the MIPS32 architecture is available since several
1343 years so chances are you even have a MIPS32 Release 2 processor
1344 in which case you should choose CPU_MIPS32_R2 instead for better
1347 config CPU_MIPS32_R2
1348 bool "MIPS32 Release 2"
1349 depends on SYS_HAS_CPU_MIPS32_R2
1350 select CPU_HAS_PREFETCH
1351 select CPU_SUPPORTS_32BIT_KERNEL
1352 select CPU_SUPPORTS_HIGHMEM
1353 select CPU_SUPPORTS_MSA
1356 Choose this option to build a kernel for release 2 or later of the
1357 MIPS32 architecture. Most modern embedded systems with a 32-bit
1358 MIPS processor are based on a MIPS32 processor. If you know the
1359 specific type of processor in your system, choose those that one
1360 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1362 config CPU_MIPS32_R6
1363 bool "MIPS32 Release 6 (EXPERIMENTAL)"
1364 depends on SYS_HAS_CPU_MIPS32_R6
1365 select CPU_HAS_PREFETCH
1366 select CPU_SUPPORTS_32BIT_KERNEL
1367 select CPU_SUPPORTS_HIGHMEM
1368 select CPU_SUPPORTS_MSA
1371 select MIPS_O32_FP64_SUPPORT
1373 Choose this option to build a kernel for release 6 or later of the
1374 MIPS32 architecture. New MIPS processors, starting with the Warrior
1375 family, are based on a MIPS32r6 processor. If you own an older
1376 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1378 config CPU_MIPS64_R1
1379 bool "MIPS64 Release 1"
1380 depends on SYS_HAS_CPU_MIPS64_R1
1381 select CPU_HAS_PREFETCH
1382 select CPU_SUPPORTS_32BIT_KERNEL
1383 select CPU_SUPPORTS_64BIT_KERNEL
1384 select CPU_SUPPORTS_HIGHMEM
1385 select CPU_SUPPORTS_HUGEPAGES
1387 Choose this option to build a kernel for release 1 or later of the
1388 MIPS64 architecture. Many modern embedded systems with a 64-bit
1389 MIPS processor are based on a MIPS64 processor. If you know the
1390 specific type of processor in your system, choose those that one
1391 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1392 Release 2 of the MIPS64 architecture is available since several
1393 years so chances are you even have a MIPS64 Release 2 processor
1394 in which case you should choose CPU_MIPS64_R2 instead for better
1397 config CPU_MIPS64_R2
1398 bool "MIPS64 Release 2"
1399 depends on SYS_HAS_CPU_MIPS64_R2
1400 select CPU_HAS_PREFETCH
1401 select CPU_SUPPORTS_32BIT_KERNEL
1402 select CPU_SUPPORTS_64BIT_KERNEL
1403 select CPU_SUPPORTS_HIGHMEM
1404 select CPU_SUPPORTS_HUGEPAGES
1405 select CPU_SUPPORTS_MSA
1407 Choose this option to build a kernel for release 2 or later of the
1408 MIPS64 architecture. Many modern embedded systems with a 64-bit
1409 MIPS processor are based on a MIPS64 processor. If you know the
1410 specific type of processor in your system, choose those that one
1411 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1413 config CPU_MIPS64_R6
1414 bool "MIPS64 Release 6 (EXPERIMENTAL)"
1415 depends on SYS_HAS_CPU_MIPS64_R6
1416 select CPU_HAS_PREFETCH
1417 select CPU_SUPPORTS_32BIT_KERNEL
1418 select CPU_SUPPORTS_64BIT_KERNEL
1419 select CPU_SUPPORTS_HIGHMEM
1420 select CPU_SUPPORTS_MSA
1423 Choose this option to build a kernel for release 6 or later of the
1424 MIPS64 architecture. New MIPS processors, starting with the Warrior
1425 family, are based on a MIPS64r6 processor. If you own an older
1426 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1430 depends on SYS_HAS_CPU_R3000
1432 select CPU_SUPPORTS_32BIT_KERNEL
1433 select CPU_SUPPORTS_HIGHMEM
1435 Please make sure to pick the right CPU type. Linux/MIPS is not
1436 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1437 *not* work on R4000 machines and vice versa. However, since most
1438 of the supported machines have an R4000 (or similar) CPU, R4x00
1439 might be a safe bet. If the resulting kernel does not work,
1440 try to recompile with R3000.
1444 depends on SYS_HAS_CPU_TX39XX
1445 select CPU_SUPPORTS_32BIT_KERNEL
1449 depends on SYS_HAS_CPU_VR41XX
1450 select CPU_SUPPORTS_32BIT_KERNEL
1451 select CPU_SUPPORTS_64BIT_KERNEL
1453 The options selects support for the NEC VR4100 series of processors.
1454 Only choose this option if you have one of these processors as a
1455 kernel built with this option will not run on any other type of
1456 processor or vice versa.
1460 depends on SYS_HAS_CPU_R4300
1461 select CPU_SUPPORTS_32BIT_KERNEL
1462 select CPU_SUPPORTS_64BIT_KERNEL
1464 MIPS Technologies R4300-series processors.
1468 depends on SYS_HAS_CPU_R4X00
1469 select CPU_SUPPORTS_32BIT_KERNEL
1470 select CPU_SUPPORTS_64BIT_KERNEL
1471 select CPU_SUPPORTS_HUGEPAGES
1473 MIPS Technologies R4000-series processors other than 4300, including
1474 the R4000, R4400, R4600, and 4700.
1478 depends on SYS_HAS_CPU_TX49XX
1479 select CPU_HAS_PREFETCH
1480 select CPU_SUPPORTS_32BIT_KERNEL
1481 select CPU_SUPPORTS_64BIT_KERNEL
1482 select CPU_SUPPORTS_HUGEPAGES
1486 depends on SYS_HAS_CPU_R5000
1487 select CPU_SUPPORTS_32BIT_KERNEL
1488 select CPU_SUPPORTS_64BIT_KERNEL
1489 select CPU_SUPPORTS_HUGEPAGES
1491 MIPS Technologies R5000-series processors other than the Nevada.
1495 depends on SYS_HAS_CPU_R5432
1496 select CPU_SUPPORTS_32BIT_KERNEL
1497 select CPU_SUPPORTS_64BIT_KERNEL
1498 select CPU_SUPPORTS_HUGEPAGES
1502 depends on SYS_HAS_CPU_R5500
1503 select CPU_SUPPORTS_32BIT_KERNEL
1504 select CPU_SUPPORTS_64BIT_KERNEL
1505 select CPU_SUPPORTS_HUGEPAGES
1507 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1512 depends on SYS_HAS_CPU_R6000
1513 select CPU_SUPPORTS_32BIT_KERNEL
1515 MIPS Technologies R6000 and R6000A series processors. Note these
1516 processors are extremely rare and the support for them is incomplete.
1520 depends on SYS_HAS_CPU_NEVADA
1521 select CPU_SUPPORTS_32BIT_KERNEL
1522 select CPU_SUPPORTS_64BIT_KERNEL
1523 select CPU_SUPPORTS_HUGEPAGES
1525 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1529 depends on SYS_HAS_CPU_R8000
1530 select CPU_HAS_PREFETCH
1531 select CPU_SUPPORTS_64BIT_KERNEL
1533 MIPS Technologies R8000 processors. Note these processors are
1534 uncommon and the support for them is incomplete.
1538 depends on SYS_HAS_CPU_R10000
1539 select CPU_HAS_PREFETCH
1540 select CPU_SUPPORTS_32BIT_KERNEL
1541 select CPU_SUPPORTS_64BIT_KERNEL
1542 select CPU_SUPPORTS_HIGHMEM
1543 select CPU_SUPPORTS_HUGEPAGES
1545 MIPS Technologies R10000-series processors.
1549 depends on SYS_HAS_CPU_RM7000
1550 select CPU_HAS_PREFETCH
1551 select CPU_SUPPORTS_32BIT_KERNEL
1552 select CPU_SUPPORTS_64BIT_KERNEL
1553 select CPU_SUPPORTS_HIGHMEM
1554 select CPU_SUPPORTS_HUGEPAGES
1558 depends on SYS_HAS_CPU_SB1
1559 select CPU_SUPPORTS_32BIT_KERNEL
1560 select CPU_SUPPORTS_64BIT_KERNEL
1561 select CPU_SUPPORTS_HIGHMEM
1562 select CPU_SUPPORTS_HUGEPAGES
1563 select WEAK_ORDERING
1565 config CPU_CAVIUM_OCTEON
1566 bool "Cavium Octeon processor"
1567 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1568 select CPU_HAS_PREFETCH
1569 select CPU_SUPPORTS_64BIT_KERNEL
1570 select WEAK_ORDERING
1571 select CPU_SUPPORTS_HIGHMEM
1572 select CPU_SUPPORTS_HUGEPAGES
1573 select USB_EHCI_BIG_ENDIAN_MMIO
1574 select MIPS_L1_CACHE_SHIFT_7
1576 The Cavium Octeon processor is a highly integrated chip containing
1577 many ethernet hardware widgets for networking tasks. The processor
1578 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1579 Full details can be found at http://www.caviumnetworks.com.
1582 bool "Broadcom BMIPS"
1583 depends on SYS_HAS_CPU_BMIPS
1585 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1586 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1587 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1588 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1589 select CPU_SUPPORTS_32BIT_KERNEL
1590 select DMA_NONCOHERENT
1592 select SWAP_IO_SPACE
1593 select WEAK_ORDERING
1594 select CPU_SUPPORTS_HIGHMEM
1595 select CPU_HAS_PREFETCH
1597 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1600 bool "Netlogic XLR SoC"
1601 depends on SYS_HAS_CPU_XLR
1602 select CPU_SUPPORTS_32BIT_KERNEL
1603 select CPU_SUPPORTS_64BIT_KERNEL
1604 select CPU_SUPPORTS_HIGHMEM
1605 select CPU_SUPPORTS_HUGEPAGES
1606 select WEAK_ORDERING
1607 select WEAK_REORDERING_BEYOND_LLSC
1609 Netlogic Microsystems XLR/XLS processors.
1612 bool "Netlogic XLP SoC"
1613 depends on SYS_HAS_CPU_XLP
1614 select CPU_SUPPORTS_32BIT_KERNEL
1615 select CPU_SUPPORTS_64BIT_KERNEL
1616 select CPU_SUPPORTS_HIGHMEM
1617 select WEAK_ORDERING
1618 select WEAK_REORDERING_BEYOND_LLSC
1619 select CPU_HAS_PREFETCH
1621 select CPU_SUPPORTS_HUGEPAGES
1623 Netlogic Microsystems XLP processors.
1626 config CPU_MIPS32_3_5_FEATURES
1627 bool "MIPS32 Release 3.5 Features"
1628 depends on SYS_HAS_CPU_MIPS32_R3_5
1629 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1631 Choose this option to build a kernel for release 2 or later of the
1632 MIPS32 architecture including features from the 3.5 release such as
1633 support for Enhanced Virtual Addressing (EVA).
1635 config CPU_MIPS32_3_5_EVA
1636 bool "Enhanced Virtual Addressing (EVA)"
1637 depends on CPU_MIPS32_3_5_FEATURES
1641 Choose this option if you want to enable the Enhanced Virtual
1642 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1643 One of its primary benefits is an increase in the maximum size
1644 of lowmem (up to 3GB). If unsure, say 'N' here.
1646 config CPU_MIPS32_R5_FEATURES
1647 bool "MIPS32 Release 5 Features"
1648 depends on SYS_HAS_CPU_MIPS32_R5
1649 depends on CPU_MIPS32_R2
1651 Choose this option to build a kernel for release 2 or later of the
1652 MIPS32 architecture including features from release 5 such as
1653 support for Extended Physical Addressing (XPA).
1655 config CPU_MIPS32_R5_XPA
1656 bool "Extended Physical Addressing (XPA)"
1657 depends on CPU_MIPS32_R5_FEATURES
1659 depends on !PAGE_SIZE_4KB
1660 depends on SYS_SUPPORTS_HIGHMEM
1663 select ARCH_PHYS_ADDR_T_64BIT
1666 Choose this option if you want to enable the Extended Physical
1667 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1668 benefit is to increase physical addressing equal to or greater
1669 than 40 bits. Note that this has the side effect of turning on
1670 64-bit addressing which in turn makes the PTEs 64-bit in size.
1671 If unsure, say 'N' here.
1674 config CPU_NOP_WORKAROUNDS
1677 config CPU_JUMP_WORKAROUNDS
1680 config CPU_LOONGSON2F_WORKAROUNDS
1681 bool "Loongson 2F Workarounds"
1683 select CPU_NOP_WORKAROUNDS
1684 select CPU_JUMP_WORKAROUNDS
1686 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1687 require workarounds. Without workarounds the system may hang
1688 unexpectedly. For more information please refer to the gas
1689 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1691 Loongson 2F03 and later have fixed these issues and no workarounds
1692 are needed. The workarounds have no significant side effect on them
1693 but may decrease the performance of the system so this option should
1694 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1697 If unsure, please say Y.
1698 endif # CPU_LOONGSON2F
1700 config SYS_SUPPORTS_ZBOOT
1702 select HAVE_KERNEL_GZIP
1703 select HAVE_KERNEL_BZIP2
1704 select HAVE_KERNEL_LZ4
1705 select HAVE_KERNEL_LZMA
1706 select HAVE_KERNEL_LZO
1707 select HAVE_KERNEL_XZ
1709 config SYS_SUPPORTS_ZBOOT_UART16550
1711 select SYS_SUPPORTS_ZBOOT
1713 config CPU_LOONGSON2
1715 select CPU_SUPPORTS_32BIT_KERNEL
1716 select CPU_SUPPORTS_64BIT_KERNEL
1717 select CPU_SUPPORTS_HIGHMEM
1718 select CPU_SUPPORTS_HUGEPAGES
1720 config CPU_LOONGSON1
1724 select CPU_HAS_PREFETCH
1725 select CPU_SUPPORTS_32BIT_KERNEL
1726 select CPU_SUPPORTS_HIGHMEM
1727 select CPU_SUPPORTS_CPUFREQ
1729 config CPU_BMIPS32_3300
1730 select SMP_UP if SMP
1733 config CPU_BMIPS4350
1735 select SYS_SUPPORTS_SMP
1736 select SYS_SUPPORTS_HOTPLUG_CPU
1738 config CPU_BMIPS4380
1740 select MIPS_L1_CACHE_SHIFT_6
1741 select SYS_SUPPORTS_SMP
1742 select SYS_SUPPORTS_HOTPLUG_CPU
1744 config CPU_BMIPS5000
1746 select MIPS_CPU_SCACHE
1747 select MIPS_L1_CACHE_SHIFT_7
1748 select SYS_SUPPORTS_SMP
1749 select SYS_SUPPORTS_HOTPLUG_CPU
1751 config SYS_HAS_CPU_LOONGSON3
1753 select CPU_SUPPORTS_CPUFREQ
1755 config SYS_HAS_CPU_LOONGSON2E
1758 config SYS_HAS_CPU_LOONGSON2F
1760 select CPU_SUPPORTS_CPUFREQ
1761 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1762 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1764 config SYS_HAS_CPU_LOONGSON1B
1767 config SYS_HAS_CPU_MIPS32_R1
1770 config SYS_HAS_CPU_MIPS32_R2
1773 config SYS_HAS_CPU_MIPS32_R3_5
1776 config SYS_HAS_CPU_MIPS32_R5
1779 config SYS_HAS_CPU_MIPS32_R6
1782 config SYS_HAS_CPU_MIPS64_R1
1785 config SYS_HAS_CPU_MIPS64_R2
1788 config SYS_HAS_CPU_MIPS64_R6
1791 config SYS_HAS_CPU_R3000
1794 config SYS_HAS_CPU_TX39XX
1797 config SYS_HAS_CPU_VR41XX
1800 config SYS_HAS_CPU_R4300
1803 config SYS_HAS_CPU_R4X00
1806 config SYS_HAS_CPU_TX49XX
1809 config SYS_HAS_CPU_R5000
1812 config SYS_HAS_CPU_R5432
1815 config SYS_HAS_CPU_R5500
1818 config SYS_HAS_CPU_R6000
1821 config SYS_HAS_CPU_NEVADA
1824 config SYS_HAS_CPU_R8000
1827 config SYS_HAS_CPU_R10000
1830 config SYS_HAS_CPU_RM7000
1833 config SYS_HAS_CPU_SB1
1836 config SYS_HAS_CPU_CAVIUM_OCTEON
1839 config SYS_HAS_CPU_BMIPS
1842 config SYS_HAS_CPU_BMIPS32_3300
1844 select SYS_HAS_CPU_BMIPS
1846 config SYS_HAS_CPU_BMIPS4350
1848 select SYS_HAS_CPU_BMIPS
1850 config SYS_HAS_CPU_BMIPS4380
1852 select SYS_HAS_CPU_BMIPS
1854 config SYS_HAS_CPU_BMIPS5000
1856 select SYS_HAS_CPU_BMIPS
1858 config SYS_HAS_CPU_XLR
1861 config SYS_HAS_CPU_XLP
1864 config MIPS_MALTA_PM
1865 depends on MIPS_MALTA
1871 # CPU may reorder R->R, R->W, W->R, W->W
1872 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1874 config WEAK_ORDERING
1878 # CPU may reorder reads and writes beyond LL/SC
1879 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1881 config WEAK_REORDERING_BEYOND_LLSC
1886 # These two indicate any level of the MIPS32 and MIPS64 architecture
1890 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1894 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1897 # These two indicate the revision of the architecture, either Release 1 or Release 2
1901 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1905 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1910 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1919 config SYS_SUPPORTS_32BIT_KERNEL
1921 config SYS_SUPPORTS_64BIT_KERNEL
1923 config CPU_SUPPORTS_32BIT_KERNEL
1925 config CPU_SUPPORTS_64BIT_KERNEL
1927 config CPU_SUPPORTS_CPUFREQ
1929 config CPU_SUPPORTS_ADDRWINCFG
1931 config CPU_SUPPORTS_HUGEPAGES
1933 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1935 config MIPS_PGD_C0_CONTEXT
1937 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1940 # Set to y for ptrace access to watch registers.
1942 config HARDWARE_WATCHPOINTS
1944 default y if CPU_MIPSR1 || CPU_MIPSR2
1949 prompt "Kernel code model"
1951 You should only select this option if you have a workload that
1952 actually benefits from 64-bit processing or if your machine has
1953 large memory. You will only be presented a single option in this
1954 menu if your system does not support both 32-bit and 64-bit kernels.
1957 bool "32-bit kernel"
1958 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1961 Select this option if you want to build a 32-bit kernel.
1963 bool "64-bit kernel"
1964 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1966 Select this option if you want to build a 64-bit kernel.
1971 bool "KVM Guest Kernel"
1972 depends on BROKEN_ON_SMP
1974 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1976 config KVM_GUEST_TIMER_FREQ
1977 int "Count/Compare Timer Frequency (MHz)"
1978 depends on KVM_GUEST
1981 Set this to non-zero if building a guest kernel for KVM to skip RTC
1982 emulation when determining guest CPU Frequency. Instead, the guest's
1983 timer frequency is specified directly.
1986 prompt "Kernel page size"
1987 default PAGE_SIZE_4KB
1989 config PAGE_SIZE_4KB
1991 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
1993 This option select the standard 4kB Linux page size. On some
1994 R3000-family processors this is the only available page size. Using
1995 4kB page size will minimize memory consumption and is therefore
1996 recommended for low memory systems.
1998 config PAGE_SIZE_8KB
2000 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2002 Using 8kB page size will result in higher performance kernel at
2003 the price of higher memory consumption. This option is available
2004 only on R8000 and cnMIPS processors. Note that you will need a
2005 suitable Linux distribution to support this.
2007 config PAGE_SIZE_16KB
2009 depends on !CPU_R3000 && !CPU_TX39XX
2011 Using 16kB page size will result in higher performance kernel at
2012 the price of higher memory consumption. This option is available on
2013 all non-R3000 family processors. Note that you will need a suitable
2014 Linux distribution to support this.
2016 config PAGE_SIZE_32KB
2018 depends on CPU_CAVIUM_OCTEON
2020 Using 32kB page size will result in higher performance kernel at
2021 the price of higher memory consumption. This option is available
2022 only on cnMIPS cores. Note that you will need a suitable Linux
2023 distribution to support this.
2025 config PAGE_SIZE_64KB
2027 depends on !CPU_R3000 && !CPU_TX39XX
2029 Using 64kB page size will result in higher performance kernel at
2030 the price of higher memory consumption. This option is available on
2031 all non-R3000 family processor. Not that at the time of this
2032 writing this option is still high experimental.
2036 config FORCE_MAX_ZONEORDER
2037 int "Maximum zone order"
2038 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2039 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2040 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2041 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2042 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2043 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2047 The kernel memory allocator divides physically contiguous memory
2048 blocks into "zones", where each zone is a power of two number of
2049 pages. This option selects the largest power of two that the kernel
2050 keeps in the memory allocator. If you need to allocate very large
2051 blocks of physically contiguous memory, then you may need to
2052 increase this value.
2054 This config option is actually maximum order plus one. For example,
2055 a value of 11 means that the largest free memory block is 2^10 pages.
2057 The page size is not necessarily 4KB. Keep this in mind
2058 when choosing a value for this option.
2063 config IP22_CPU_SCACHE
2068 # Support for a MIPS32 / MIPS64 style S-caches
2070 config MIPS_CPU_SCACHE
2074 config R5000_CPU_SCACHE
2078 config RM7000_CPU_SCACHE
2082 config SIBYTE_DMA_PAGEOPS
2083 bool "Use DMA to clear/copy pages"
2086 Instead of using the CPU to zero and copy pages, use a Data Mover
2087 channel. These DMA channels are otherwise unused by the standard
2088 SiByte Linux port. Seems to give a small performance benefit.
2090 config CPU_HAS_PREFETCH
2093 config CPU_GENERIC_DUMP_TLB
2095 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2099 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2101 config CPU_R4K_CACHE_TLB
2103 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2106 bool "MIPS MT SMP support (1 TC on each available VPE)"
2107 depends on SYS_SUPPORTS_MULTITHREADING
2108 select CPU_MIPSR2_IRQ_VI
2109 select CPU_MIPSR2_IRQ_EI
2115 select SYS_SUPPORTS_SMP
2116 select SYS_SUPPORTS_SCHED_SMT
2117 select MIPS_PERF_SHARED_TC_COUNTERS
2119 This is a kernel model which is known as SMVP. This is supported
2120 on cores with the MT ASE and uses the available VPEs to implement
2121 virtual processors which supports SMP. This is equivalent to the
2122 Intel Hyperthreading feature. For further information go to
2123 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2129 bool "SMT (multithreading) scheduler support"
2130 depends on SYS_SUPPORTS_SCHED_SMT
2133 SMT scheduler support improves the CPU scheduler's decision making
2134 when dealing with MIPS MT enabled cores at a cost of slightly
2135 increased overhead in some places. If unsure say N here.
2137 config SYS_SUPPORTS_SCHED_SMT
2140 config SYS_SUPPORTS_MULTITHREADING
2143 config MIPS_MT_FPAFF
2144 bool "Dynamic FPU affinity for FP-intensive threads"
2146 depends on MIPS_MT_SMP
2148 config MIPSR2_TO_R6_EMULATOR
2149 bool "MIPS R2-to-R6 emulator"
2150 depends on CPU_MIPSR6 && !SMP
2153 Choose this option if you want to run non-R6 MIPS userland code.
2154 Even if you say 'Y' here, the emulator will still be disabled by
2155 default. You can enable it using the 'mipsr2emu' kernel option.
2156 The only reason this is a build-time option is to save ~14K from the
2158 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2159 depends on SMP && CPU_MIPSR6
2161 config MIPS_VPE_LOADER
2162 bool "VPE loader support."
2163 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2164 select CPU_MIPSR2_IRQ_VI
2165 select CPU_MIPSR2_IRQ_EI
2168 Includes a loader for loading an elf relocatable object
2169 onto another VPE and running it.
2171 config MIPS_VPE_LOADER_CMP
2174 depends on MIPS_VPE_LOADER && MIPS_CMP
2176 config MIPS_VPE_LOADER_MT
2179 depends on MIPS_VPE_LOADER && !MIPS_CMP
2181 config MIPS_VPE_LOADER_TOM
2182 bool "Load VPE program into memory hidden from linux"
2183 depends on MIPS_VPE_LOADER
2186 The loader can use memory that is present but has been hidden from
2187 Linux using the kernel command line option "mem=xxMB". It's up to
2188 you to ensure the amount you put in the option and the space your
2189 program requires is less or equal to the amount physically present.
2191 config MIPS_VPE_APSP_API
2192 bool "Enable support for AP/SP API (RTLX)"
2193 depends on MIPS_VPE_LOADER
2196 config MIPS_VPE_APSP_API_CMP
2199 depends on MIPS_VPE_APSP_API && MIPS_CMP
2201 config MIPS_VPE_APSP_API_MT
2204 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2207 bool "MIPS CMP framework support (DEPRECATED)"
2208 depends on SYS_SUPPORTS_MIPS_CMP
2212 select SYS_SUPPORTS_SMP
2213 select WEAK_ORDERING
2216 Select this if you are using a bootloader which implements the "CMP
2217 framework" protocol (ie. YAMON) and want your kernel to make use of
2218 its ability to start secondary CPUs.
2220 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2224 bool "MIPS Coherent Processing System support"
2225 depends on SYS_SUPPORTS_MIPS_CPS && !64BIT
2228 select MIPS_CPS_PM if HOTPLUG_CPU
2231 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2232 select SYS_SUPPORTS_HOTPLUG_CPU
2233 select SYS_SUPPORTS_SMP
2234 select WEAK_ORDERING
2236 Select this if you wish to run an SMP kernel across multiple cores
2237 within a MIPS Coherent Processing System. When this option is
2238 enabled the kernel will probe for other cores and boot them with
2239 no external assistance. It is safe to enable this when hardware
2240 support is unavailable.
2256 config SB1_PASS_1_WORKAROUNDS
2258 depends on CPU_SB1_PASS_1
2261 config SB1_PASS_2_WORKAROUNDS
2263 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2266 config SB1_PASS_2_1_WORKAROUNDS
2268 depends on CPU_SB1 && CPU_SB1_PASS_2
2272 config ARCH_PHYS_ADDR_T_64BIT
2276 prompt "SmartMIPS or microMIPS ASE support"
2278 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2281 Select this if you want neither microMIPS nor SmartMIPS support
2283 config CPU_HAS_SMARTMIPS
2284 depends on SYS_SUPPORTS_SMARTMIPS
2287 SmartMIPS is a extension of the MIPS32 architecture aimed at
2288 increased security at both hardware and software level for
2289 smartcards. Enabling this option will allow proper use of the
2290 SmartMIPS instructions by Linux applications. However a kernel with
2291 this option will not work on a MIPS core without SmartMIPS core. If
2292 you don't know you probably don't have SmartMIPS and should say N
2295 config CPU_MICROMIPS
2296 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2299 When this option is enabled the kernel will be built using the
2305 bool "Support for the MIPS SIMD Architecture (EXPERIMENTAL)"
2306 depends on CPU_SUPPORTS_MSA
2307 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2309 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2310 and a set of SIMD instructions to operate on them. When this option
2311 is enabled the kernel will support allocating & switching MSA
2312 vector register contexts. If you know that your kernel will only be
2313 running on CPUs which do not support MSA or that your userland will
2314 not be making use of it then you may wish to say N here to reduce
2315 the size & complexity of your kernel.
2326 # Vectored interrupt mode is an R2 feature
2328 config CPU_MIPSR2_IRQ_VI
2332 # Extended interrupt mode is an R2 feature
2334 config CPU_MIPSR2_IRQ_EI
2339 depends on !CPU_R3000
2345 config CPU_DADDI_WORKAROUNDS
2348 config CPU_R4000_WORKAROUNDS
2350 select CPU_R4400_WORKAROUNDS
2352 config CPU_R4400_WORKAROUNDS
2356 # - Highmem only makes sense for the 32-bit kernel.
2357 # - The current highmem code will only work properly on physically indexed
2358 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2359 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2360 # moment we protect the user and offer the highmem option only on machines
2361 # where it's known to be safe. This will not offer highmem on a few systems
2362 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2363 # indexed CPUs but we're playing safe.
2364 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2365 # know they might have memory configurations that could make use of highmem
2369 bool "High Memory Support"
2370 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2372 config CPU_SUPPORTS_HIGHMEM
2375 config SYS_SUPPORTS_HIGHMEM
2378 config SYS_SUPPORTS_SMARTMIPS
2381 config SYS_SUPPORTS_MICROMIPS
2384 config SYS_SUPPORTS_MIPS16
2387 This option must be set if a kernel might be executed on a MIPS16-
2388 enabled CPU even if MIPS16 is not actually being used. In other
2389 words, it makes the kernel MIPS16-tolerant.
2391 config CPU_SUPPORTS_MSA
2394 config ARCH_FLATMEM_ENABLE
2396 depends on !NUMA && !CPU_LOONGSON2
2398 config ARCH_DISCONTIGMEM_ENABLE
2400 default y if SGI_IP27
2402 Say Y to support efficient handling of discontiguous physical memory,
2403 for architectures which are either NUMA (Non-Uniform Memory Access)
2404 or have huge holes in the physical address space for other reasons.
2405 See <file:Documentation/vm/numa> for more.
2407 config ARCH_SPARSEMEM_ENABLE
2409 select SPARSEMEM_STATIC
2413 depends on SYS_SUPPORTS_NUMA
2415 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2416 Access). This option improves performance on systems with more
2417 than two nodes; on two node systems it is generally better to
2418 leave it disabled; on single node systems disable this option
2421 config SYS_SUPPORTS_NUMA
2427 depends on NEED_MULTIPLE_NODES
2429 config HW_PERF_EVENTS
2430 bool "Enable hardware performance counter support for perf events"
2431 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2434 Enable hardware performance counter support for perf events. If
2435 disabled, perf events will use software events only.
2440 bool "Multi-Processing support"
2441 depends on SYS_SUPPORTS_SMP
2443 This enables support for systems with more than one CPU. If you have
2444 a system with only one CPU, say N. If you have a system with more
2445 than one CPU, say Y.
2447 If you say N here, the kernel will run on uni- and multiprocessor
2448 machines, but will use only one CPU of a multiprocessor machine. If
2449 you say Y here, the kernel will run on many, but not all,
2450 uniprocessor machines. On a uniprocessor machine, the kernel
2451 will run faster if you say N here.
2453 People using multiprocessor machines who say Y here should also say
2454 Y to "Enhanced Real Time Clock Support", below.
2456 See also the SMP-HOWTO available at
2457 <http://www.tldp.org/docs.html#howto>.
2459 If you don't know what to do here, say N.
2464 config SYS_SUPPORTS_MIPS_CMP
2467 config SYS_SUPPORTS_MIPS_CPS
2470 config SYS_SUPPORTS_SMP
2473 config NR_CPUS_DEFAULT_4
2476 config NR_CPUS_DEFAULT_8
2479 config NR_CPUS_DEFAULT_16
2482 config NR_CPUS_DEFAULT_32
2485 config NR_CPUS_DEFAULT_64
2489 int "Maximum number of CPUs (2-256)"
2492 default "4" if NR_CPUS_DEFAULT_4
2493 default "8" if NR_CPUS_DEFAULT_8
2494 default "16" if NR_CPUS_DEFAULT_16
2495 default "32" if NR_CPUS_DEFAULT_32
2496 default "64" if NR_CPUS_DEFAULT_64
2498 This allows you to specify the maximum number of CPUs which this
2499 kernel will support. The maximum supported value is 32 for 32-bit
2500 kernel and 64 for 64-bit kernels; the minimum value which makes
2501 sense is 1 for Qemu (useful only for kernel debugging purposes)
2502 and 2 for all others.
2504 This is purely to save memory - each supported CPU adds
2505 approximately eight kilobytes to the kernel image. For best
2506 performance should round up your number of processors to the next
2509 config MIPS_PERF_SHARED_TC_COUNTERS
2513 # Timer Interrupt Frequency Configuration
2517 prompt "Timer frequency"
2520 Allows the configuration of the timer frequency.
2523 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2526 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2529 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2532 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2535 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2538 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2541 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2545 config SYS_SUPPORTS_48HZ
2548 config SYS_SUPPORTS_100HZ
2551 config SYS_SUPPORTS_128HZ
2554 config SYS_SUPPORTS_250HZ
2557 config SYS_SUPPORTS_256HZ
2560 config SYS_SUPPORTS_1000HZ
2563 config SYS_SUPPORTS_1024HZ
2566 config SYS_SUPPORTS_ARBIT_HZ
2568 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2569 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2570 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2571 !SYS_SUPPORTS_1024HZ
2576 default 100 if HZ_100
2577 default 128 if HZ_128
2578 default 250 if HZ_250
2579 default 256 if HZ_256
2580 default 1000 if HZ_1000
2581 default 1024 if HZ_1024
2584 def_bool HIGH_RES_TIMERS
2586 source "kernel/Kconfig.preempt"
2589 bool "Kexec system call"
2591 kexec is a system call that implements the ability to shutdown your
2592 current kernel, and to start another kernel. It is like a reboot
2593 but it is independent of the system firmware. And like a reboot
2594 you can start any kernel with it, not just Linux.
2596 The name comes from the similarity to the exec system call.
2598 It is an ongoing process to be certain the hardware in a machine
2599 is properly shutdown, so do not be surprised if this code does not
2600 initially work for you. As of this writing the exact hardware
2601 interface is strongly in flux, so no good recommendation can be
2605 bool "Kernel crash dumps"
2607 Generate crash dump after being started by kexec.
2608 This should be normally only set in special crash dump kernels
2609 which are loaded in the main kernel with kexec-tools into
2610 a specially reserved region and then later executed after
2611 a crash by kdump/kexec. The crash dump kernel must be compiled
2612 to a memory address not used by the main kernel or firmware using
2615 config PHYSICAL_START
2616 hex "Physical address where the kernel is loaded"
2617 default "0xffffffff84000000" if 64BIT
2618 default "0x84000000" if 32BIT
2619 depends on CRASH_DUMP
2621 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2622 If you plan to use kernel for capturing the crash dump change
2623 this value to start of the reserved region (the "X" value as
2624 specified in the "crashkernel=YM@XM" command line boot parameter
2625 passed to the panic-ed kernel).
2628 bool "Enable seccomp to safely compute untrusted bytecode"
2632 This kernel feature is useful for number crunching applications
2633 that may need to compute untrusted bytecode during their
2634 execution. By using pipes or other transports made available to
2635 the process as file descriptors supporting the read/write
2636 syscalls, it's possible to isolate those applications in
2637 their own address space using seccomp. Once seccomp is
2638 enabled via /proc/<pid>/seccomp, it cannot be disabled
2639 and the task is only allowed to execute a few safe syscalls
2640 defined by each seccomp mode.
2642 If unsure, say Y. Only embedded should say N here.
2644 config MIPS_O32_FP64_SUPPORT
2645 bool "Support for O32 binaries using 64-bit FP (EXPERIMENTAL)"
2646 depends on 32BIT || MIPS32_O32
2648 When this is enabled, the kernel will support use of 64-bit floating
2649 point registers with binaries using the O32 ABI along with the
2650 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2651 32-bit MIPS systems this support is at the cost of increasing the
2652 size and complexity of the compiled FPU emulator. Thus if you are
2653 running a MIPS32 system and know that none of your userland binaries
2654 will require 64-bit floating point, you may wish to reduce the size
2655 of your kernel & potentially improve FP emulation performance by
2658 Although binutils currently supports use of this flag the details
2659 concerning its effect upon the O32 ABI in userland are still being
2660 worked on. In order to avoid userland becoming dependant upon current
2661 behaviour before the details have been finalised, this option should
2662 be considered experimental and only enabled by those working upon
2670 select OF_EARLY_FLATTREE
2678 config LOCKDEP_SUPPORT
2682 config STACKTRACE_SUPPORT
2686 config PGTABLE_LEVELS
2688 default 3 if 64BIT && !PAGE_SIZE_64KB
2691 source "init/Kconfig"
2693 source "kernel/Kconfig.freezer"
2695 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2703 bool "Support for PCI controller"
2704 depends on HW_HAS_PCI
2706 select NO_GENERIC_PCI_IOPORT_MAP
2708 Find out whether you have a PCI motherboard. PCI is the name of a
2709 bus system, i.e. the way the CPU talks to the other stuff inside
2710 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2714 bool "Support for HT-linked PCI"
2716 depends on CPU_LOONGSON3
2720 Loongson family machines use Hyper-Transport bus for inter-core
2721 connection and device connection. The PCI bus is a subordinate
2722 linked at HT. Choose Y for Loongson-3 based machines.
2727 source "drivers/pci/Kconfig"
2729 source "drivers/pci/pcie/Kconfig"
2732 # ISA support is now enabled via select. Too many systems still have the one
2733 # or other ISA chip on the board that users don't know about so don't expect
2734 # users to choose the right thing ...
2741 depends on HW_HAS_EISA
2743 select GENERIC_ISA_DMA
2745 The Extended Industry Standard Architecture (EISA) bus was
2746 developed as an open alternative to the IBM MicroChannel bus.
2748 The EISA bus provided some of the features of the IBM MicroChannel
2749 bus while maintaining backward compatibility with cards made for
2750 the older ISA bus. The EISA bus saw limited use between 1988 and
2751 1995 when it was made obsolete by the PCI bus.
2753 Say Y here if you are building a kernel for an EISA-based machine.
2757 source "drivers/eisa/Kconfig"
2760 bool "TURBOchannel support"
2761 depends on MACH_DECSTATION
2763 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2764 processors. TURBOchannel programming specifications are available
2766 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2768 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2769 Linux driver support status is documented at:
2770 <http://www.linux-mips.org/wiki/DECstation>
2780 select MIPS_EXTERNAL_TIMER
2788 source "drivers/pcmcia/Kconfig"
2790 source "drivers/pci/hotplug/Kconfig"
2793 tristate "RapidIO support"
2797 If you say Y here, the kernel will include drivers and
2798 infrastructure code to support RapidIO interconnect devices.
2800 source "drivers/rapidio/Kconfig"
2804 menu "Executable file formats"
2806 source "fs/Kconfig.binfmt"
2811 config MIPS32_COMPAT
2817 config SYSVIPC_COMPAT
2821 bool "Kernel support for o32 binaries"
2823 select ARCH_WANT_OLD_COMPAT_IPC
2825 select MIPS32_COMPAT
2826 select SYSVIPC_COMPAT if SYSVIPC
2828 Select this option if you want to run o32 binaries. These are pure
2829 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2830 existing binaries are in this format.
2835 bool "Kernel support for n32 binaries"
2838 select MIPS32_COMPAT
2839 select SYSVIPC_COMPAT if SYSVIPC
2841 Select this option if you want to run n32 binaries. These are
2842 64-bit binaries using 32-bit quantities for addressing and certain
2843 data that would normally be 64-bit. They are used in special
2850 default y if MIPS32_O32 || MIPS32_N32
2854 menu "Power management options"
2856 config ARCH_HIBERNATION_POSSIBLE
2858 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2860 config ARCH_SUSPEND_POSSIBLE
2862 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2864 source "kernel/power/Kconfig"
2868 config MIPS_EXTERNAL_TIMER
2871 menu "CPU Power Management"
2873 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2874 source "drivers/cpufreq/Kconfig"
2877 source "drivers/cpuidle/Kconfig"
2881 source "net/Kconfig"
2883 source "drivers/Kconfig"
2885 source "drivers/firmware/Kconfig"
2889 source "arch/mips/Kconfig.debug"
2891 source "security/Kconfig"
2893 source "crypto/Kconfig"
2895 source "lib/Kconfig"
2897 source "arch/mips/kvm/Kconfig"