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_LOONGSON64
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
131 select SYS_HAS_CPU_MIPS32_R2
132 select SYS_HAS_EARLY_PRINTK
133 select SYS_SUPPORTS_32BIT_KERNEL
134 select SYS_SUPPORTS_BIG_ENDIAN
135 select SYS_SUPPORTS_MIPS16
136 select SYS_SUPPORTS_ZBOOT
138 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
141 bool "Broadcom Generic BMIPS kernel"
143 select NO_EXCEPT_FILL
149 select BCM7038_L1_IRQ
150 select BCM7120_L2_IRQ
151 select BRCMSTB_L2_IRQ
153 select RAW_IRQ_ACCESSORS
154 select DMA_NONCOHERENT
155 select SYS_SUPPORTS_32BIT_KERNEL
156 select SYS_SUPPORTS_LITTLE_ENDIAN
157 select SYS_SUPPORTS_BIG_ENDIAN
158 select SYS_SUPPORTS_HIGHMEM
159 select SYS_HAS_CPU_BMIPS32_3300
160 select SYS_HAS_CPU_BMIPS4350
161 select SYS_HAS_CPU_BMIPS4380
162 select SYS_HAS_CPU_BMIPS5000
164 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
165 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
166 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
167 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
169 Build a generic DT-based kernel image that boots on select
170 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
171 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
172 must be set appropriately for your board.
175 bool "Broadcom BCM47XX based boards"
176 select ARCH_WANT_OPTIONAL_GPIOLIB
180 select DMA_NONCOHERENT
183 select SYS_HAS_CPU_MIPS32_R1
184 select NO_EXCEPT_FILL
185 select SYS_SUPPORTS_32BIT_KERNEL
186 select SYS_SUPPORTS_LITTLE_ENDIAN
187 select SYS_SUPPORTS_MIPS16
188 select SYS_HAS_EARLY_PRINTK
189 select USE_GENERIC_EARLY_PRINTK_8250
191 select LEDS_GPIO_REGISTER
193 Support for BCM47XX based boards
196 bool "Broadcom BCM63XX based boards"
201 select DMA_NONCOHERENT
203 select SYS_SUPPORTS_32BIT_KERNEL
204 select SYS_SUPPORTS_BIG_ENDIAN
205 select SYS_HAS_EARLY_PRINTK
207 select ARCH_REQUIRE_GPIOLIB
209 select MIPS_L1_CACHE_SHIFT_4
211 Support for BCM63XX based boards
218 select DMA_NONCOHERENT
224 select PCI_GT64XXX_PCI0
226 select SYS_HAS_CPU_NEVADA
227 select SYS_HAS_EARLY_PRINTK
228 select SYS_SUPPORTS_32BIT_KERNEL
229 select SYS_SUPPORTS_64BIT_KERNEL
230 select SYS_SUPPORTS_LITTLE_ENDIAN
231 select USE_GENERIC_EARLY_PRINTK_8250
233 config MACH_DECSTATION
237 select CEVT_R4K if CPU_R4X00
239 select CSRC_R4K if CPU_R4X00
240 select CPU_DADDI_WORKAROUNDS if 64BIT
241 select CPU_R4000_WORKAROUNDS if 64BIT
242 select CPU_R4400_WORKAROUNDS if 64BIT
243 select DMA_NONCOHERENT
246 select SYS_HAS_CPU_R3000
247 select SYS_HAS_CPU_R4X00
248 select SYS_SUPPORTS_32BIT_KERNEL
249 select SYS_SUPPORTS_64BIT_KERNEL
250 select SYS_SUPPORTS_LITTLE_ENDIAN
251 select SYS_SUPPORTS_128HZ
252 select SYS_SUPPORTS_256HZ
253 select SYS_SUPPORTS_1024HZ
254 select MIPS_L1_CACHE_SHIFT_4
256 This enables support for DEC's MIPS based workstations. For details
257 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
258 DECstation porting pages on <http://decstation.unix-ag.org/>.
260 If you have one of the following DECstation Models you definitely
261 want to choose R4xx0 for the CPU Type:
268 otherwise choose R3000.
271 bool "Jazz family of machines"
274 select ARCH_MAY_HAVE_PC_FDC
277 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
278 select GENERIC_ISA_DMA
279 select HAVE_PCSPKR_PLATFORM
284 select SYS_HAS_CPU_R4X00
285 select SYS_SUPPORTS_32BIT_KERNEL
286 select SYS_SUPPORTS_64BIT_KERNEL
287 select SYS_SUPPORTS_100HZ
289 This a family of machines based on the MIPS R4030 chipset which was
290 used by several vendors to build RISC/os and Windows NT workstations.
291 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
292 Olivetti M700-10 workstations.
295 bool "Ingenic SoC based machines"
296 select SYS_SUPPORTS_32BIT_KERNEL
297 select SYS_SUPPORTS_LITTLE_ENDIAN
298 select SYS_SUPPORTS_ZBOOT_UART16550
299 select DMA_NONCOHERENT
301 select ARCH_REQUIRE_GPIOLIB
303 select GENERIC_IRQ_CHIP
309 bool "Lantiq based platforms"
310 select DMA_NONCOHERENT
314 select SYS_HAS_CPU_MIPS32_R1
315 select SYS_HAS_CPU_MIPS32_R2
316 select SYS_SUPPORTS_BIG_ENDIAN
317 select SYS_SUPPORTS_32BIT_KERNEL
318 select SYS_SUPPORTS_MIPS16
319 select SYS_SUPPORTS_MULTITHREADING
320 select SYS_HAS_EARLY_PRINTK
321 select ARCH_REQUIRE_GPIOLIB
324 select HAVE_MACH_CLKDEV
328 select PINCTRL_LANTIQ
329 select ARCH_HAS_RESET_CONTROLLER
330 select RESET_CONTROLLER
333 bool "LASAT Networks platforms"
337 select DMA_NONCOHERENT
338 select SYS_HAS_EARLY_PRINTK
341 select PCI_GT64XXX_PCI0
343 select R5000_CPU_SCACHE
344 select SYS_HAS_CPU_R5000
345 select SYS_SUPPORTS_32BIT_KERNEL
346 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
347 select SYS_SUPPORTS_LITTLE_ENDIAN
349 config MACH_LOONGSON32
350 bool "Loongson-1 family of machines"
351 select SYS_SUPPORTS_ZBOOT
353 This enables support for the Loongson-1 family of machines.
355 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
356 the Institute of Computing Technology (ICT), Chinese Academy of
359 config MACH_LOONGSON64
360 bool "Loongson-2/3 family of machines"
361 select SYS_SUPPORTS_ZBOOT
363 This enables the support of Loongson-2/3 family of machines.
365 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
366 family of multi-core CPUs. They are both 64-bit general-purpose
367 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
368 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
369 in the People's Republic of China. The chief architect is Professor
372 config MACH_PISTACHIO
373 bool "IMG Pistachio SoC based boards"
374 select ARCH_REQUIRE_GPIOLIB
378 select CLKSRC_MIPS_GIC
381 select DMA_MAYBE_COHERENT
385 select MIPS_CPU_SCACHE
389 select SYS_HAS_CPU_MIPS32_R2
390 select SYS_SUPPORTS_32BIT_KERNEL
391 select SYS_SUPPORTS_LITTLE_ENDIAN
392 select SYS_SUPPORTS_MIPS_CPS
393 select SYS_SUPPORTS_MULTITHREADING
394 select SYS_SUPPORTS_ZBOOT
395 select SYS_HAS_EARLY_PRINTK
396 select USE_GENERIC_EARLY_PRINTK_8250
399 This enables support for the IMG Pistachio SoC platform.
402 bool "MIPS Malta board"
403 select ARCH_MAY_HAVE_PC_FDC
408 select CLKSRC_MIPS_GIC
409 select DMA_MAYBE_COHERENT
410 select GENERIC_ISA_DMA
411 select HAVE_PCSPKR_PLATFORM
418 select MIPS_CPU_SCACHE
419 select MIPS_L1_CACHE_SHIFT_6
420 select PCI_GT64XXX_PCI0
423 select SYS_HAS_CPU_MIPS32_R1
424 select SYS_HAS_CPU_MIPS32_R2
425 select SYS_HAS_CPU_MIPS32_R3_5
426 select SYS_HAS_CPU_MIPS32_R5
427 select SYS_HAS_CPU_MIPS32_R6
428 select SYS_HAS_CPU_MIPS64_R1
429 select SYS_HAS_CPU_MIPS64_R2
430 select SYS_HAS_CPU_MIPS64_R6
431 select SYS_HAS_CPU_NEVADA
432 select SYS_HAS_CPU_RM7000
433 select SYS_SUPPORTS_32BIT_KERNEL
434 select SYS_SUPPORTS_64BIT_KERNEL
435 select SYS_SUPPORTS_BIG_ENDIAN
436 select SYS_SUPPORTS_HIGHMEM
437 select SYS_SUPPORTS_LITTLE_ENDIAN
438 select SYS_SUPPORTS_MICROMIPS
439 select SYS_SUPPORTS_MIPS_CMP
440 select SYS_SUPPORTS_MIPS_CPS
441 select SYS_SUPPORTS_MIPS16
442 select SYS_SUPPORTS_MULTITHREADING
443 select SYS_SUPPORTS_SMARTMIPS
444 select SYS_SUPPORTS_ZBOOT
445 select ZONE_DMA32 if 64BIT
447 This enables support for the MIPS Technologies Malta evaluation
451 bool "MIPS SEAD3 board"
457 select CLKSRC_MIPS_GIC
458 select CPU_MIPSR2_IRQ_VI
459 select CPU_MIPSR2_IRQ_EI
460 select DMA_NONCOHERENT
465 select SYS_HAS_CPU_MIPS32_R1
466 select SYS_HAS_CPU_MIPS32_R2
467 select SYS_HAS_CPU_MIPS64_R1
468 select SYS_HAS_EARLY_PRINTK
469 select SYS_SUPPORTS_32BIT_KERNEL
470 select SYS_SUPPORTS_64BIT_KERNEL
471 select SYS_SUPPORTS_BIG_ENDIAN
472 select SYS_SUPPORTS_LITTLE_ENDIAN
473 select SYS_SUPPORTS_SMARTMIPS
474 select SYS_SUPPORTS_MICROMIPS
475 select SYS_SUPPORTS_MIPS16
476 select USB_EHCI_BIG_ENDIAN_DESC
477 select USB_EHCI_BIG_ENDIAN_MMIO
480 This enables support for the MIPS Technologies SEAD3 evaluation
484 bool "NEC EMMA2RH Mark-eins board"
488 This enables support for the NEC Electronics Mark-eins boards.
491 bool "NEC VR4100 series based machines"
494 select SYS_HAS_CPU_VR41XX
495 select SYS_SUPPORTS_MIPS16
496 select ARCH_REQUIRE_GPIOLIB
499 bool "NXP STB220 board"
502 Support for NXP Semiconductors STB220 Development Board.
509 Support for NXP Semiconductors STB225 Development Board.
512 bool "PMC-Sierra MSP chipsets"
515 select DMA_NONCOHERENT
517 select NO_EXCEPT_FILL
519 select SYS_HAS_CPU_MIPS32_R1
520 select SYS_HAS_CPU_MIPS32_R2
521 select SYS_SUPPORTS_32BIT_KERNEL
522 select SYS_SUPPORTS_BIG_ENDIAN
523 select SYS_SUPPORTS_MIPS16
526 select SERIAL_8250_CONSOLE
527 select USB_EHCI_BIG_ENDIAN_MMIO
528 select USB_EHCI_BIG_ENDIAN_DESC
530 This adds support for the PMC-Sierra family of Multi-Service
531 Processor System-On-A-Chips. These parts include a number
532 of integrated peripherals, interfaces and DSPs in addition to
533 a variety of MIPS cores.
536 bool "Ralink based machines"
540 select DMA_NONCOHERENT
543 select SYS_HAS_CPU_MIPS32_R1
544 select SYS_HAS_CPU_MIPS32_R2
545 select SYS_SUPPORTS_32BIT_KERNEL
546 select SYS_SUPPORTS_LITTLE_ENDIAN
547 select SYS_SUPPORTS_MIPS16
548 select SYS_HAS_EARLY_PRINTK
549 select HAVE_MACH_CLKDEV
551 select ARCH_HAS_RESET_CONTROLLER
552 select RESET_CONTROLLER
555 bool "SGI IP22 (Indy/Indigo2)"
561 select DEFAULT_SGI_PARTITION
562 select DMA_NONCOHERENT
566 select IP22_CPU_SCACHE
568 select GENERIC_ISA_DMA_SUPPORT_BROKEN
570 select SGI_HAS_INDYDOG
576 select SYS_HAS_CPU_R4X00
577 select SYS_HAS_CPU_R5000
579 # Disable EARLY_PRINTK for now since it leads to overwritten prom
580 # memory during early boot on some machines.
582 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
583 # for a more details discussion
585 # select SYS_HAS_EARLY_PRINTK
586 select SYS_SUPPORTS_32BIT_KERNEL
587 select SYS_SUPPORTS_64BIT_KERNEL
588 select SYS_SUPPORTS_BIG_ENDIAN
589 select MIPS_L1_CACHE_SHIFT_7
591 This are the SGI Indy, Challenge S and Indigo2, as well as certain
592 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
593 that runs on these, say Y here.
596 bool "SGI IP27 (Origin200/2000)"
600 select DEFAULT_SGI_PARTITION
602 select SYS_HAS_EARLY_PRINTK
604 select NR_CPUS_DEFAULT_64
605 select SYS_HAS_CPU_R10000
606 select SYS_SUPPORTS_64BIT_KERNEL
607 select SYS_SUPPORTS_BIG_ENDIAN
608 select SYS_SUPPORTS_NUMA
609 select SYS_SUPPORTS_SMP
610 select MIPS_L1_CACHE_SHIFT_7
612 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
613 workstations. To compile a Linux kernel that runs on these, say Y
617 bool "SGI IP28 (Indigo2 R10k)"
623 select DEFAULT_SGI_PARTITION
624 select DMA_NONCOHERENT
625 select GENERIC_ISA_DMA_SUPPORT_BROKEN
631 select SGI_HAS_INDYDOG
637 select SYS_HAS_CPU_R10000
639 # Disable EARLY_PRINTK for now since it leads to overwritten prom
640 # memory during early boot on some machines.
642 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
643 # for a more details discussion
645 # select SYS_HAS_EARLY_PRINTK
646 select SYS_SUPPORTS_64BIT_KERNEL
647 select SYS_SUPPORTS_BIG_ENDIAN
648 select MIPS_L1_CACHE_SHIFT_7
650 This is the SGI Indigo2 with R10000 processor. To compile a Linux
651 kernel that runs on these, say Y here.
660 select DMA_NONCOHERENT
663 select R5000_CPU_SCACHE
664 select RM7000_CPU_SCACHE
665 select SYS_HAS_CPU_R5000
666 select SYS_HAS_CPU_R10000 if BROKEN
667 select SYS_HAS_CPU_RM7000
668 select SYS_HAS_CPU_NEVADA
669 select SYS_SUPPORTS_64BIT_KERNEL
670 select SYS_SUPPORTS_BIG_ENDIAN
672 If you want this kernel to run on SGI O2 workstation, say Y here.
675 bool "Sibyte BCM91120C-CRhine"
678 select SIBYTE_BCM1120
680 select SYS_HAS_CPU_SB1
681 select SYS_SUPPORTS_BIG_ENDIAN
682 select SYS_SUPPORTS_LITTLE_ENDIAN
685 bool "Sibyte BCM91120x-Carmel"
688 select SIBYTE_BCM1120
690 select SYS_HAS_CPU_SB1
691 select SYS_SUPPORTS_BIG_ENDIAN
692 select SYS_SUPPORTS_LITTLE_ENDIAN
695 bool "Sibyte BCM91125C-CRhone"
698 select SIBYTE_BCM1125
700 select SYS_HAS_CPU_SB1
701 select SYS_SUPPORTS_BIG_ENDIAN
702 select SYS_SUPPORTS_HIGHMEM
703 select SYS_SUPPORTS_LITTLE_ENDIAN
706 bool "Sibyte BCM91125E-Rhone"
709 select SIBYTE_BCM1125H
711 select SYS_HAS_CPU_SB1
712 select SYS_SUPPORTS_BIG_ENDIAN
713 select SYS_SUPPORTS_LITTLE_ENDIAN
716 bool "Sibyte BCM91250A-SWARM"
719 select HAVE_PATA_PLATFORM
722 select SYS_HAS_CPU_SB1
723 select SYS_SUPPORTS_BIG_ENDIAN
724 select SYS_SUPPORTS_HIGHMEM
725 select SYS_SUPPORTS_LITTLE_ENDIAN
726 select ZONE_DMA32 if 64BIT
728 config SIBYTE_LITTLESUR
729 bool "Sibyte BCM91250C2-LittleSur"
732 select HAVE_PATA_PLATFORM
735 select SYS_HAS_CPU_SB1
736 select SYS_SUPPORTS_BIG_ENDIAN
737 select SYS_SUPPORTS_HIGHMEM
738 select SYS_SUPPORTS_LITTLE_ENDIAN
740 config SIBYTE_SENTOSA
741 bool "Sibyte BCM91250E-Sentosa"
746 select SYS_HAS_CPU_SB1
747 select SYS_SUPPORTS_BIG_ENDIAN
748 select SYS_SUPPORTS_LITTLE_ENDIAN
751 bool "Sibyte BCM91480B-BigSur"
754 select NR_CPUS_DEFAULT_4
755 select SIBYTE_BCM1x80
757 select SYS_HAS_CPU_SB1
758 select SYS_SUPPORTS_BIG_ENDIAN
759 select SYS_SUPPORTS_HIGHMEM
760 select SYS_SUPPORTS_LITTLE_ENDIAN
761 select ZONE_DMA32 if 64BIT
764 bool "SNI RM200/300/400"
765 select FW_ARC if CPU_LITTLE_ENDIAN
766 select FW_ARC32 if CPU_LITTLE_ENDIAN
767 select FW_SNIPROM if CPU_BIG_ENDIAN
768 select ARCH_MAY_HAVE_PC_FDC
772 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
773 select DMA_NONCOHERENT
774 select GENERIC_ISA_DMA
775 select HAVE_PCSPKR_PLATFORM
782 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
783 select SYS_HAS_CPU_R4X00
784 select SYS_HAS_CPU_R5000
785 select SYS_HAS_CPU_R10000
786 select R5000_CPU_SCACHE
787 select SYS_HAS_EARLY_PRINTK
788 select SYS_SUPPORTS_32BIT_KERNEL
789 select SYS_SUPPORTS_64BIT_KERNEL
790 select SYS_SUPPORTS_BIG_ENDIAN
791 select SYS_SUPPORTS_HIGHMEM
792 select SYS_SUPPORTS_LITTLE_ENDIAN
794 The SNI RM200/300/400 are MIPS-based machines manufactured by
795 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
796 Technology and now in turn merged with Fujitsu. Say Y here to
797 support this machine type.
800 bool "Toshiba TX39 series based machines"
803 bool "Toshiba TX49 series based machines"
805 config MIKROTIK_RB532
806 bool "Mikrotik RB532 boards"
809 select DMA_NONCOHERENT
812 select SYS_HAS_CPU_MIPS32_R1
813 select SYS_SUPPORTS_32BIT_KERNEL
814 select SYS_SUPPORTS_LITTLE_ENDIAN
817 select ARCH_REQUIRE_GPIOLIB
818 select MIPS_L1_CACHE_SHIFT_4
820 Support the Mikrotik(tm) RouterBoard 532 series,
821 based on the IDT RC32434 SoC.
823 config CAVIUM_OCTEON_SOC
824 bool "Cavium Networks Octeon SoC based boards"
826 select ARCH_PHYS_ADDR_T_64BIT
828 select SYS_SUPPORTS_64BIT_KERNEL
829 select SYS_SUPPORTS_BIG_ENDIAN
831 select SYS_SUPPORTS_LITTLE_ENDIAN
832 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
833 select SYS_HAS_EARLY_PRINTK
834 select SYS_HAS_CPU_CAVIUM_OCTEON
839 select ARCH_REQUIRE_GPIOLIB
842 select ARCH_SPARSEMEM_ENABLE
843 select SYS_SUPPORTS_SMP
844 select NR_CPUS_DEFAULT_16
846 select MTD_COMPLEX_MAPPINGS
848 This option supports all of the Octeon reference boards from Cavium
849 Networks. It builds a kernel that dynamically determines the Octeon
850 CPU type and supports all known board reference implementations.
851 Some of the supported boards are:
858 Say Y here for most Octeon reference boards.
861 bool "Netlogic XLR/XLS based systems"
864 select SYS_HAS_CPU_XLR
865 select SYS_SUPPORTS_SMP
868 select SYS_SUPPORTS_32BIT_KERNEL
869 select SYS_SUPPORTS_64BIT_KERNEL
870 select ARCH_PHYS_ADDR_T_64BIT
871 select SYS_SUPPORTS_BIG_ENDIAN
872 select SYS_SUPPORTS_HIGHMEM
874 select NR_CPUS_DEFAULT_32
878 select ZONE_DMA32 if 64BIT
880 select SYS_HAS_EARLY_PRINTK
881 select SYS_SUPPORTS_ZBOOT
882 select SYS_SUPPORTS_ZBOOT_UART16550
884 Support for systems based on Netlogic XLR and XLS processors.
885 Say Y here if you have a XLR or XLS based board.
888 bool "Netlogic XLP based systems"
891 select SYS_HAS_CPU_XLP
892 select SYS_SUPPORTS_SMP
894 select SYS_SUPPORTS_32BIT_KERNEL
895 select SYS_SUPPORTS_64BIT_KERNEL
896 select ARCH_PHYS_ADDR_T_64BIT
897 select SYS_SUPPORTS_BIG_ENDIAN
898 select SYS_SUPPORTS_LITTLE_ENDIAN
899 select SYS_SUPPORTS_HIGHMEM
901 select NR_CPUS_DEFAULT_32
905 select ZONE_DMA32 if 64BIT
907 select SYS_HAS_EARLY_PRINTK
909 select SYS_SUPPORTS_ZBOOT
910 select SYS_SUPPORTS_ZBOOT_UART16550
912 This board is based on Netlogic XLP Processor.
913 Say Y here if you have a XLP based board.
916 bool "Para-Virtualized guest system"
920 select SYS_SUPPORTS_64BIT_KERNEL
921 select SYS_SUPPORTS_32BIT_KERNEL
922 select SYS_SUPPORTS_BIG_ENDIAN
923 select SYS_SUPPORTS_SMP
924 select NR_CPUS_DEFAULT_4
925 select SYS_HAS_EARLY_PRINTK
926 select SYS_HAS_CPU_MIPS32_R2
927 select SYS_HAS_CPU_MIPS64_R2
928 select SYS_HAS_CPU_CAVIUM_OCTEON
932 This option supports guest running under ????
936 source "arch/mips/alchemy/Kconfig"
937 source "arch/mips/ath25/Kconfig"
938 source "arch/mips/ath79/Kconfig"
939 source "arch/mips/bcm47xx/Kconfig"
940 source "arch/mips/bcm63xx/Kconfig"
941 source "arch/mips/bmips/Kconfig"
942 source "arch/mips/jazz/Kconfig"
943 source "arch/mips/jz4740/Kconfig"
944 source "arch/mips/lantiq/Kconfig"
945 source "arch/mips/lasat/Kconfig"
946 source "arch/mips/pmcs-msp71xx/Kconfig"
947 source "arch/mips/ralink/Kconfig"
948 source "arch/mips/sgi-ip27/Kconfig"
949 source "arch/mips/sibyte/Kconfig"
950 source "arch/mips/txx9/Kconfig"
951 source "arch/mips/vr41xx/Kconfig"
952 source "arch/mips/cavium-octeon/Kconfig"
953 source "arch/mips/loongson32/Kconfig"
954 source "arch/mips/loongson64/Kconfig"
955 source "arch/mips/netlogic/Kconfig"
956 source "arch/mips/paravirt/Kconfig"
960 config RWSEM_GENERIC_SPINLOCK
964 config RWSEM_XCHGADD_ALGORITHM
967 config ARCH_HAS_ILOG2_U32
971 config ARCH_HAS_ILOG2_U64
975 config GENERIC_HWEIGHT
979 config GENERIC_CALIBRATE_DELAY
983 config SCHED_OMIT_FRAME_POINTER
988 # Select some configuration options automatically based on user selections.
993 config ARCH_MAY_HAVE_PC_FDC
1030 select ARCH_REQUIRE_GPIOLIB
1036 config ARCH_DMA_ADDR_T_64BIT
1037 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1039 config DMA_MAYBE_COHERENT
1040 select DMA_NONCOHERENT
1046 config DMA_NONCOHERENT
1048 select NEED_DMA_MAP_STATE
1050 config NEED_DMA_MAP_STATE
1053 config SYS_HAS_EARLY_PRINTK
1057 bool "Support for hot-pluggable CPUs"
1058 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
1060 Say Y here to allow turning CPUs off and on. CPUs can be
1061 controlled through /sys/devices/system/cpu.
1062 (Note: power management support will enable this option
1063 automatically on SMP systems. )
1064 Say N if you want to disable CPU hotplug.
1066 config SYS_SUPPORTS_HOTPLUG_CPU
1073 config MIPS_BONITO64
1088 config NO_IOPORT_MAP
1094 config GENERIC_ISA_DMA
1096 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1099 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1101 select GENERIC_ISA_DMA
1106 config HOLES_IN_ZONE
1110 # Endianness selection. Sufficiently obscure so many users don't know what to
1111 # answer,so we try hard to limit the available choices. Also the use of a
1112 # choice statement should be more obvious to the user.
1115 prompt "Endianness selection"
1117 Some MIPS machines can be configured for either little or big endian
1118 byte order. These modes require different kernels and a different
1119 Linux distribution. In general there is one preferred byteorder for a
1120 particular system but some systems are just as commonly used in the
1121 one or the other endianness.
1123 config CPU_BIG_ENDIAN
1125 depends on SYS_SUPPORTS_BIG_ENDIAN
1127 config CPU_LITTLE_ENDIAN
1128 bool "Little endian"
1129 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1136 config SYS_SUPPORTS_APM_EMULATION
1139 config SYS_SUPPORTS_BIG_ENDIAN
1142 config SYS_SUPPORTS_LITTLE_ENDIAN
1145 config SYS_SUPPORTS_HUGETLBFS
1147 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1150 config MIPS_HUGE_TLB_SUPPORT
1151 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1168 config PCI_GT64XXX_PCI0
1171 config NO_EXCEPT_FILL
1178 select DMA_NONCOHERENT
1180 select SWAP_IO_SPACE
1181 select SYS_HAS_CPU_R5500
1182 select SYS_SUPPORTS_32BIT_KERNEL
1183 select SYS_SUPPORTS_64BIT_KERNEL
1184 select SYS_SUPPORTS_BIG_ENDIAN
1191 select DMA_NONCOHERENT
1192 select SYS_HAS_CPU_MIPS32_R2
1193 select SYS_SUPPORTS_32BIT_KERNEL
1194 select SYS_SUPPORTS_LITTLE_ENDIAN
1195 select SYS_SUPPORTS_BIG_ENDIAN
1196 select SYS_SUPPORTS_MIPS16
1197 select CPU_MIPSR2_IRQ_VI
1206 config SWAP_IO_SPACE
1209 config SGI_HAS_INDYDOG
1221 config SGI_HAS_ZILOG
1224 config SGI_HAS_I8042
1227 config DEFAULT_SGI_PARTITION
1239 config MIPS_L1_CACHE_SHIFT_4
1242 config MIPS_L1_CACHE_SHIFT_5
1245 config MIPS_L1_CACHE_SHIFT_6
1248 config MIPS_L1_CACHE_SHIFT_7
1251 config MIPS_L1_CACHE_SHIFT
1253 default "7" if MIPS_L1_CACHE_SHIFT_7
1254 default "6" if MIPS_L1_CACHE_SHIFT_6
1255 default "5" if MIPS_L1_CACHE_SHIFT_5
1256 default "4" if MIPS_L1_CACHE_SHIFT_4
1259 config HAVE_STD_PC_SERIAL_PORT
1263 bool "ARC console support"
1264 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1268 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1273 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1282 menu "CPU selection"
1288 config CPU_LOONGSON3
1289 bool "Loongson 3 CPU"
1290 depends on SYS_HAS_CPU_LOONGSON3
1291 select CPU_SUPPORTS_64BIT_KERNEL
1292 select CPU_SUPPORTS_HIGHMEM
1293 select CPU_SUPPORTS_HUGEPAGES
1294 select WEAK_ORDERING
1295 select WEAK_REORDERING_BEYOND_LLSC
1296 select ARCH_REQUIRE_GPIOLIB
1298 The Loongson 3 processor implements the MIPS64R2 instruction
1299 set with many extensions.
1301 config CPU_LOONGSON2E
1303 depends on SYS_HAS_CPU_LOONGSON2E
1304 select CPU_LOONGSON2
1306 The Loongson 2E processor implements the MIPS III instruction set
1307 with many extensions.
1309 It has an internal FPGA northbridge, which is compatible to
1312 config CPU_LOONGSON2F
1314 depends on SYS_HAS_CPU_LOONGSON2F
1315 select CPU_LOONGSON2
1316 select ARCH_REQUIRE_GPIOLIB
1318 The Loongson 2F processor implements the MIPS III instruction set
1319 with many extensions.
1321 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1322 have a similar programming interface with FPGA northbridge used in
1325 config CPU_LOONGSON1B
1327 depends on SYS_HAS_CPU_LOONGSON1B
1328 select CPU_LOONGSON1
1330 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1331 release 2 instruction set.
1333 config CPU_MIPS32_R1
1334 bool "MIPS32 Release 1"
1335 depends on SYS_HAS_CPU_MIPS32_R1
1336 select CPU_HAS_PREFETCH
1337 select CPU_SUPPORTS_32BIT_KERNEL
1338 select CPU_SUPPORTS_HIGHMEM
1340 Choose this option to build a kernel for release 1 or later of the
1341 MIPS32 architecture. Most modern embedded systems with a 32-bit
1342 MIPS processor are based on a MIPS32 processor. If you know the
1343 specific type of processor in your system, choose those that one
1344 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1345 Release 2 of the MIPS32 architecture is available since several
1346 years so chances are you even have a MIPS32 Release 2 processor
1347 in which case you should choose CPU_MIPS32_R2 instead for better
1350 config CPU_MIPS32_R2
1351 bool "MIPS32 Release 2"
1352 depends on SYS_HAS_CPU_MIPS32_R2
1353 select CPU_HAS_PREFETCH
1354 select CPU_SUPPORTS_32BIT_KERNEL
1355 select CPU_SUPPORTS_HIGHMEM
1356 select CPU_SUPPORTS_MSA
1359 Choose this option to build a kernel for release 2 or later of the
1360 MIPS32 architecture. Most modern embedded systems with a 32-bit
1361 MIPS processor are based on a MIPS32 processor. If you know the
1362 specific type of processor in your system, choose those that one
1363 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1365 config CPU_MIPS32_R6
1366 bool "MIPS32 Release 6 (EXPERIMENTAL)"
1367 depends on SYS_HAS_CPU_MIPS32_R6
1368 select CPU_HAS_PREFETCH
1369 select CPU_SUPPORTS_32BIT_KERNEL
1370 select CPU_SUPPORTS_HIGHMEM
1371 select CPU_SUPPORTS_MSA
1374 select MIPS_O32_FP64_SUPPORT
1376 Choose this option to build a kernel for release 6 or later of the
1377 MIPS32 architecture. New MIPS processors, starting with the Warrior
1378 family, are based on a MIPS32r6 processor. If you own an older
1379 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1381 config CPU_MIPS64_R1
1382 bool "MIPS64 Release 1"
1383 depends on SYS_HAS_CPU_MIPS64_R1
1384 select CPU_HAS_PREFETCH
1385 select CPU_SUPPORTS_32BIT_KERNEL
1386 select CPU_SUPPORTS_64BIT_KERNEL
1387 select CPU_SUPPORTS_HIGHMEM
1388 select CPU_SUPPORTS_HUGEPAGES
1390 Choose this option to build a kernel for release 1 or later of the
1391 MIPS64 architecture. Many modern embedded systems with a 64-bit
1392 MIPS processor are based on a MIPS64 processor. If you know the
1393 specific type of processor in your system, choose those that one
1394 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1395 Release 2 of the MIPS64 architecture is available since several
1396 years so chances are you even have a MIPS64 Release 2 processor
1397 in which case you should choose CPU_MIPS64_R2 instead for better
1400 config CPU_MIPS64_R2
1401 bool "MIPS64 Release 2"
1402 depends on SYS_HAS_CPU_MIPS64_R2
1403 select CPU_HAS_PREFETCH
1404 select CPU_SUPPORTS_32BIT_KERNEL
1405 select CPU_SUPPORTS_64BIT_KERNEL
1406 select CPU_SUPPORTS_HIGHMEM
1407 select CPU_SUPPORTS_HUGEPAGES
1408 select CPU_SUPPORTS_MSA
1410 Choose this option to build a kernel for release 2 or later of the
1411 MIPS64 architecture. Many modern embedded systems with a 64-bit
1412 MIPS processor are based on a MIPS64 processor. If you know the
1413 specific type of processor in your system, choose those that one
1414 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1416 config CPU_MIPS64_R6
1417 bool "MIPS64 Release 6 (EXPERIMENTAL)"
1418 depends on SYS_HAS_CPU_MIPS64_R6
1419 select CPU_HAS_PREFETCH
1420 select CPU_SUPPORTS_32BIT_KERNEL
1421 select CPU_SUPPORTS_64BIT_KERNEL
1422 select CPU_SUPPORTS_HIGHMEM
1423 select CPU_SUPPORTS_MSA
1426 Choose this option to build a kernel for release 6 or later of the
1427 MIPS64 architecture. New MIPS processors, starting with the Warrior
1428 family, are based on a MIPS64r6 processor. If you own an older
1429 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1433 depends on SYS_HAS_CPU_R3000
1435 select CPU_SUPPORTS_32BIT_KERNEL
1436 select CPU_SUPPORTS_HIGHMEM
1438 Please make sure to pick the right CPU type. Linux/MIPS is not
1439 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1440 *not* work on R4000 machines and vice versa. However, since most
1441 of the supported machines have an R4000 (or similar) CPU, R4x00
1442 might be a safe bet. If the resulting kernel does not work,
1443 try to recompile with R3000.
1447 depends on SYS_HAS_CPU_TX39XX
1448 select CPU_SUPPORTS_32BIT_KERNEL
1452 depends on SYS_HAS_CPU_VR41XX
1453 select CPU_SUPPORTS_32BIT_KERNEL
1454 select CPU_SUPPORTS_64BIT_KERNEL
1456 The options selects support for the NEC VR4100 series of processors.
1457 Only choose this option if you have one of these processors as a
1458 kernel built with this option will not run on any other type of
1459 processor or vice versa.
1463 depends on SYS_HAS_CPU_R4300
1464 select CPU_SUPPORTS_32BIT_KERNEL
1465 select CPU_SUPPORTS_64BIT_KERNEL
1467 MIPS Technologies R4300-series processors.
1471 depends on SYS_HAS_CPU_R4X00
1472 select CPU_SUPPORTS_32BIT_KERNEL
1473 select CPU_SUPPORTS_64BIT_KERNEL
1474 select CPU_SUPPORTS_HUGEPAGES
1476 MIPS Technologies R4000-series processors other than 4300, including
1477 the R4000, R4400, R4600, and 4700.
1481 depends on SYS_HAS_CPU_TX49XX
1482 select CPU_HAS_PREFETCH
1483 select CPU_SUPPORTS_32BIT_KERNEL
1484 select CPU_SUPPORTS_64BIT_KERNEL
1485 select CPU_SUPPORTS_HUGEPAGES
1489 depends on SYS_HAS_CPU_R5000
1490 select CPU_SUPPORTS_32BIT_KERNEL
1491 select CPU_SUPPORTS_64BIT_KERNEL
1492 select CPU_SUPPORTS_HUGEPAGES
1494 MIPS Technologies R5000-series processors other than the Nevada.
1498 depends on SYS_HAS_CPU_R5432
1499 select CPU_SUPPORTS_32BIT_KERNEL
1500 select CPU_SUPPORTS_64BIT_KERNEL
1501 select CPU_SUPPORTS_HUGEPAGES
1505 depends on SYS_HAS_CPU_R5500
1506 select CPU_SUPPORTS_32BIT_KERNEL
1507 select CPU_SUPPORTS_64BIT_KERNEL
1508 select CPU_SUPPORTS_HUGEPAGES
1510 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1515 depends on SYS_HAS_CPU_R6000
1516 select CPU_SUPPORTS_32BIT_KERNEL
1518 MIPS Technologies R6000 and R6000A series processors. Note these
1519 processors are extremely rare and the support for them is incomplete.
1523 depends on SYS_HAS_CPU_NEVADA
1524 select CPU_SUPPORTS_32BIT_KERNEL
1525 select CPU_SUPPORTS_64BIT_KERNEL
1526 select CPU_SUPPORTS_HUGEPAGES
1528 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1532 depends on SYS_HAS_CPU_R8000
1533 select CPU_HAS_PREFETCH
1534 select CPU_SUPPORTS_64BIT_KERNEL
1536 MIPS Technologies R8000 processors. Note these processors are
1537 uncommon and the support for them is incomplete.
1541 depends on SYS_HAS_CPU_R10000
1542 select CPU_HAS_PREFETCH
1543 select CPU_SUPPORTS_32BIT_KERNEL
1544 select CPU_SUPPORTS_64BIT_KERNEL
1545 select CPU_SUPPORTS_HIGHMEM
1546 select CPU_SUPPORTS_HUGEPAGES
1548 MIPS Technologies R10000-series processors.
1552 depends on SYS_HAS_CPU_RM7000
1553 select CPU_HAS_PREFETCH
1554 select CPU_SUPPORTS_32BIT_KERNEL
1555 select CPU_SUPPORTS_64BIT_KERNEL
1556 select CPU_SUPPORTS_HIGHMEM
1557 select CPU_SUPPORTS_HUGEPAGES
1561 depends on SYS_HAS_CPU_SB1
1562 select CPU_SUPPORTS_32BIT_KERNEL
1563 select CPU_SUPPORTS_64BIT_KERNEL
1564 select CPU_SUPPORTS_HIGHMEM
1565 select CPU_SUPPORTS_HUGEPAGES
1566 select WEAK_ORDERING
1568 config CPU_CAVIUM_OCTEON
1569 bool "Cavium Octeon processor"
1570 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1571 select CPU_HAS_PREFETCH
1572 select CPU_SUPPORTS_64BIT_KERNEL
1573 select WEAK_ORDERING
1574 select CPU_SUPPORTS_HIGHMEM
1575 select CPU_SUPPORTS_HUGEPAGES
1576 select USB_EHCI_BIG_ENDIAN_MMIO
1577 select MIPS_L1_CACHE_SHIFT_7
1579 The Cavium Octeon processor is a highly integrated chip containing
1580 many ethernet hardware widgets for networking tasks. The processor
1581 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1582 Full details can be found at http://www.caviumnetworks.com.
1585 bool "Broadcom BMIPS"
1586 depends on SYS_HAS_CPU_BMIPS
1588 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1589 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1590 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1591 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1592 select CPU_SUPPORTS_32BIT_KERNEL
1593 select DMA_NONCOHERENT
1595 select SWAP_IO_SPACE
1596 select WEAK_ORDERING
1597 select CPU_SUPPORTS_HIGHMEM
1598 select CPU_HAS_PREFETCH
1600 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1603 bool "Netlogic XLR SoC"
1604 depends on SYS_HAS_CPU_XLR
1605 select CPU_SUPPORTS_32BIT_KERNEL
1606 select CPU_SUPPORTS_64BIT_KERNEL
1607 select CPU_SUPPORTS_HIGHMEM
1608 select CPU_SUPPORTS_HUGEPAGES
1609 select WEAK_ORDERING
1610 select WEAK_REORDERING_BEYOND_LLSC
1612 Netlogic Microsystems XLR/XLS processors.
1615 bool "Netlogic XLP SoC"
1616 depends on SYS_HAS_CPU_XLP
1617 select CPU_SUPPORTS_32BIT_KERNEL
1618 select CPU_SUPPORTS_64BIT_KERNEL
1619 select CPU_SUPPORTS_HIGHMEM
1620 select WEAK_ORDERING
1621 select WEAK_REORDERING_BEYOND_LLSC
1622 select CPU_HAS_PREFETCH
1624 select CPU_SUPPORTS_HUGEPAGES
1626 Netlogic Microsystems XLP processors.
1629 config CPU_MIPS32_3_5_FEATURES
1630 bool "MIPS32 Release 3.5 Features"
1631 depends on SYS_HAS_CPU_MIPS32_R3_5
1632 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1634 Choose this option to build a kernel for release 2 or later of the
1635 MIPS32 architecture including features from the 3.5 release such as
1636 support for Enhanced Virtual Addressing (EVA).
1638 config CPU_MIPS32_3_5_EVA
1639 bool "Enhanced Virtual Addressing (EVA)"
1640 depends on CPU_MIPS32_3_5_FEATURES
1644 Choose this option if you want to enable the Enhanced Virtual
1645 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1646 One of its primary benefits is an increase in the maximum size
1647 of lowmem (up to 3GB). If unsure, say 'N' here.
1649 config CPU_MIPS32_R5_FEATURES
1650 bool "MIPS32 Release 5 Features"
1651 depends on SYS_HAS_CPU_MIPS32_R5
1652 depends on CPU_MIPS32_R2
1654 Choose this option to build a kernel for release 2 or later of the
1655 MIPS32 architecture including features from release 5 such as
1656 support for Extended Physical Addressing (XPA).
1658 config CPU_MIPS32_R5_XPA
1659 bool "Extended Physical Addressing (XPA)"
1660 depends on CPU_MIPS32_R5_FEATURES
1662 depends on !PAGE_SIZE_4KB
1663 depends on SYS_SUPPORTS_HIGHMEM
1666 select ARCH_PHYS_ADDR_T_64BIT
1669 Choose this option if you want to enable the Extended Physical
1670 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1671 benefit is to increase physical addressing equal to or greater
1672 than 40 bits. Note that this has the side effect of turning on
1673 64-bit addressing which in turn makes the PTEs 64-bit in size.
1674 If unsure, say 'N' here.
1677 config CPU_NOP_WORKAROUNDS
1680 config CPU_JUMP_WORKAROUNDS
1683 config CPU_LOONGSON2F_WORKAROUNDS
1684 bool "Loongson 2F Workarounds"
1686 select CPU_NOP_WORKAROUNDS
1687 select CPU_JUMP_WORKAROUNDS
1689 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1690 require workarounds. Without workarounds the system may hang
1691 unexpectedly. For more information please refer to the gas
1692 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1694 Loongson 2F03 and later have fixed these issues and no workarounds
1695 are needed. The workarounds have no significant side effect on them
1696 but may decrease the performance of the system so this option should
1697 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1700 If unsure, please say Y.
1701 endif # CPU_LOONGSON2F
1703 config SYS_SUPPORTS_ZBOOT
1705 select HAVE_KERNEL_GZIP
1706 select HAVE_KERNEL_BZIP2
1707 select HAVE_KERNEL_LZ4
1708 select HAVE_KERNEL_LZMA
1709 select HAVE_KERNEL_LZO
1710 select HAVE_KERNEL_XZ
1712 config SYS_SUPPORTS_ZBOOT_UART16550
1714 select SYS_SUPPORTS_ZBOOT
1716 config CPU_LOONGSON2
1718 select CPU_SUPPORTS_32BIT_KERNEL
1719 select CPU_SUPPORTS_64BIT_KERNEL
1720 select CPU_SUPPORTS_HIGHMEM
1721 select CPU_SUPPORTS_HUGEPAGES
1723 config CPU_LOONGSON1
1727 select CPU_HAS_PREFETCH
1728 select CPU_SUPPORTS_32BIT_KERNEL
1729 select CPU_SUPPORTS_HIGHMEM
1730 select CPU_SUPPORTS_CPUFREQ
1732 config CPU_BMIPS32_3300
1733 select SMP_UP if SMP
1736 config CPU_BMIPS4350
1738 select SYS_SUPPORTS_SMP
1739 select SYS_SUPPORTS_HOTPLUG_CPU
1741 config CPU_BMIPS4380
1743 select MIPS_L1_CACHE_SHIFT_6
1744 select SYS_SUPPORTS_SMP
1745 select SYS_SUPPORTS_HOTPLUG_CPU
1747 config CPU_BMIPS5000
1749 select MIPS_CPU_SCACHE
1750 select MIPS_L1_CACHE_SHIFT_7
1751 select SYS_SUPPORTS_SMP
1752 select SYS_SUPPORTS_HOTPLUG_CPU
1754 config SYS_HAS_CPU_LOONGSON3
1756 select CPU_SUPPORTS_CPUFREQ
1758 config SYS_HAS_CPU_LOONGSON2E
1761 config SYS_HAS_CPU_LOONGSON2F
1763 select CPU_SUPPORTS_CPUFREQ
1764 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1765 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1767 config SYS_HAS_CPU_LOONGSON1B
1770 config SYS_HAS_CPU_MIPS32_R1
1773 config SYS_HAS_CPU_MIPS32_R2
1776 config SYS_HAS_CPU_MIPS32_R3_5
1779 config SYS_HAS_CPU_MIPS32_R5
1782 config SYS_HAS_CPU_MIPS32_R6
1785 config SYS_HAS_CPU_MIPS64_R1
1788 config SYS_HAS_CPU_MIPS64_R2
1791 config SYS_HAS_CPU_MIPS64_R6
1794 config SYS_HAS_CPU_R3000
1797 config SYS_HAS_CPU_TX39XX
1800 config SYS_HAS_CPU_VR41XX
1803 config SYS_HAS_CPU_R4300
1806 config SYS_HAS_CPU_R4X00
1809 config SYS_HAS_CPU_TX49XX
1812 config SYS_HAS_CPU_R5000
1815 config SYS_HAS_CPU_R5432
1818 config SYS_HAS_CPU_R5500
1821 config SYS_HAS_CPU_R6000
1824 config SYS_HAS_CPU_NEVADA
1827 config SYS_HAS_CPU_R8000
1830 config SYS_HAS_CPU_R10000
1833 config SYS_HAS_CPU_RM7000
1836 config SYS_HAS_CPU_SB1
1839 config SYS_HAS_CPU_CAVIUM_OCTEON
1842 config SYS_HAS_CPU_BMIPS
1845 config SYS_HAS_CPU_BMIPS32_3300
1847 select SYS_HAS_CPU_BMIPS
1849 config SYS_HAS_CPU_BMIPS4350
1851 select SYS_HAS_CPU_BMIPS
1853 config SYS_HAS_CPU_BMIPS4380
1855 select SYS_HAS_CPU_BMIPS
1857 config SYS_HAS_CPU_BMIPS5000
1859 select SYS_HAS_CPU_BMIPS
1861 config SYS_HAS_CPU_XLR
1864 config SYS_HAS_CPU_XLP
1867 config MIPS_MALTA_PM
1868 depends on MIPS_MALTA
1874 # CPU may reorder R->R, R->W, W->R, W->W
1875 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1877 config WEAK_ORDERING
1881 # CPU may reorder reads and writes beyond LL/SC
1882 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1884 config WEAK_REORDERING_BEYOND_LLSC
1889 # These two indicate any level of the MIPS32 and MIPS64 architecture
1893 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1897 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1900 # These two indicate the revision of the architecture, either Release 1 or Release 2
1904 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1908 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1913 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1922 config SYS_SUPPORTS_32BIT_KERNEL
1924 config SYS_SUPPORTS_64BIT_KERNEL
1926 config CPU_SUPPORTS_32BIT_KERNEL
1928 config CPU_SUPPORTS_64BIT_KERNEL
1930 config CPU_SUPPORTS_CPUFREQ
1932 config CPU_SUPPORTS_ADDRWINCFG
1934 config CPU_SUPPORTS_HUGEPAGES
1936 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1938 config MIPS_PGD_C0_CONTEXT
1940 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1943 # Set to y for ptrace access to watch registers.
1945 config HARDWARE_WATCHPOINTS
1947 default y if CPU_MIPSR1 || CPU_MIPSR2
1952 prompt "Kernel code model"
1954 You should only select this option if you have a workload that
1955 actually benefits from 64-bit processing or if your machine has
1956 large memory. You will only be presented a single option in this
1957 menu if your system does not support both 32-bit and 64-bit kernels.
1960 bool "32-bit kernel"
1961 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1964 Select this option if you want to build a 32-bit kernel.
1966 bool "64-bit kernel"
1967 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1969 Select this option if you want to build a 64-bit kernel.
1974 bool "KVM Guest Kernel"
1975 depends on BROKEN_ON_SMP
1977 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1979 config KVM_GUEST_TIMER_FREQ
1980 int "Count/Compare Timer Frequency (MHz)"
1981 depends on KVM_GUEST
1984 Set this to non-zero if building a guest kernel for KVM to skip RTC
1985 emulation when determining guest CPU Frequency. Instead, the guest's
1986 timer frequency is specified directly.
1989 prompt "Kernel page size"
1990 default PAGE_SIZE_4KB
1992 config PAGE_SIZE_4KB
1994 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
1996 This option select the standard 4kB Linux page size. On some
1997 R3000-family processors this is the only available page size. Using
1998 4kB page size will minimize memory consumption and is therefore
1999 recommended for low memory systems.
2001 config PAGE_SIZE_8KB
2003 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2005 Using 8kB page size will result in higher performance kernel at
2006 the price of higher memory consumption. This option is available
2007 only on R8000 and cnMIPS processors. Note that you will need a
2008 suitable Linux distribution to support this.
2010 config PAGE_SIZE_16KB
2012 depends on !CPU_R3000 && !CPU_TX39XX
2014 Using 16kB page size will result in higher performance kernel at
2015 the price of higher memory consumption. This option is available on
2016 all non-R3000 family processors. Note that you will need a suitable
2017 Linux distribution to support this.
2019 config PAGE_SIZE_32KB
2021 depends on CPU_CAVIUM_OCTEON
2023 Using 32kB page size will result in higher performance kernel at
2024 the price of higher memory consumption. This option is available
2025 only on cnMIPS cores. Note that you will need a suitable Linux
2026 distribution to support this.
2028 config PAGE_SIZE_64KB
2030 depends on !CPU_R3000 && !CPU_TX39XX
2032 Using 64kB page size will result in higher performance kernel at
2033 the price of higher memory consumption. This option is available on
2034 all non-R3000 family processor. Not that at the time of this
2035 writing this option is still high experimental.
2039 config FORCE_MAX_ZONEORDER
2040 int "Maximum zone order"
2041 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2042 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2043 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2044 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2045 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2046 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2050 The kernel memory allocator divides physically contiguous memory
2051 blocks into "zones", where each zone is a power of two number of
2052 pages. This option selects the largest power of two that the kernel
2053 keeps in the memory allocator. If you need to allocate very large
2054 blocks of physically contiguous memory, then you may need to
2055 increase this value.
2057 This config option is actually maximum order plus one. For example,
2058 a value of 11 means that the largest free memory block is 2^10 pages.
2060 The page size is not necessarily 4KB. Keep this in mind
2061 when choosing a value for this option.
2066 config IP22_CPU_SCACHE
2071 # Support for a MIPS32 / MIPS64 style S-caches
2073 config MIPS_CPU_SCACHE
2077 config R5000_CPU_SCACHE
2081 config RM7000_CPU_SCACHE
2085 config SIBYTE_DMA_PAGEOPS
2086 bool "Use DMA to clear/copy pages"
2089 Instead of using the CPU to zero and copy pages, use a Data Mover
2090 channel. These DMA channels are otherwise unused by the standard
2091 SiByte Linux port. Seems to give a small performance benefit.
2093 config CPU_HAS_PREFETCH
2096 config CPU_GENERIC_DUMP_TLB
2098 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2102 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2104 config CPU_R4K_CACHE_TLB
2106 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2109 bool "MIPS MT SMP support (1 TC on each available VPE)"
2110 depends on SYS_SUPPORTS_MULTITHREADING
2111 select CPU_MIPSR2_IRQ_VI
2112 select CPU_MIPSR2_IRQ_EI
2118 select SYS_SUPPORTS_SMP
2119 select SYS_SUPPORTS_SCHED_SMT
2120 select MIPS_PERF_SHARED_TC_COUNTERS
2122 This is a kernel model which is known as SMVP. This is supported
2123 on cores with the MT ASE and uses the available VPEs to implement
2124 virtual processors which supports SMP. This is equivalent to the
2125 Intel Hyperthreading feature. For further information go to
2126 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2132 bool "SMT (multithreading) scheduler support"
2133 depends on SYS_SUPPORTS_SCHED_SMT
2136 SMT scheduler support improves the CPU scheduler's decision making
2137 when dealing with MIPS MT enabled cores at a cost of slightly
2138 increased overhead in some places. If unsure say N here.
2140 config SYS_SUPPORTS_SCHED_SMT
2143 config SYS_SUPPORTS_MULTITHREADING
2146 config MIPS_MT_FPAFF
2147 bool "Dynamic FPU affinity for FP-intensive threads"
2149 depends on MIPS_MT_SMP
2151 config MIPSR2_TO_R6_EMULATOR
2152 bool "MIPS R2-to-R6 emulator"
2153 depends on CPU_MIPSR6 && !SMP
2156 Choose this option if you want to run non-R6 MIPS userland code.
2157 Even if you say 'Y' here, the emulator will still be disabled by
2158 default. You can enable it using the 'mipsr2emu' kernel option.
2159 The only reason this is a build-time option is to save ~14K from the
2161 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2162 depends on SMP && CPU_MIPSR6
2164 config MIPS_VPE_LOADER
2165 bool "VPE loader support."
2166 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2167 select CPU_MIPSR2_IRQ_VI
2168 select CPU_MIPSR2_IRQ_EI
2171 Includes a loader for loading an elf relocatable object
2172 onto another VPE and running it.
2174 config MIPS_VPE_LOADER_CMP
2177 depends on MIPS_VPE_LOADER && MIPS_CMP
2179 config MIPS_VPE_LOADER_MT
2182 depends on MIPS_VPE_LOADER && !MIPS_CMP
2184 config MIPS_VPE_LOADER_TOM
2185 bool "Load VPE program into memory hidden from linux"
2186 depends on MIPS_VPE_LOADER
2189 The loader can use memory that is present but has been hidden from
2190 Linux using the kernel command line option "mem=xxMB". It's up to
2191 you to ensure the amount you put in the option and the space your
2192 program requires is less or equal to the amount physically present.
2194 config MIPS_VPE_APSP_API
2195 bool "Enable support for AP/SP API (RTLX)"
2196 depends on MIPS_VPE_LOADER
2199 config MIPS_VPE_APSP_API_CMP
2202 depends on MIPS_VPE_APSP_API && MIPS_CMP
2204 config MIPS_VPE_APSP_API_MT
2207 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2210 bool "MIPS CMP framework support (DEPRECATED)"
2211 depends on SYS_SUPPORTS_MIPS_CMP
2215 select SYS_SUPPORTS_SMP
2216 select WEAK_ORDERING
2219 Select this if you are using a bootloader which implements the "CMP
2220 framework" protocol (ie. YAMON) and want your kernel to make use of
2221 its ability to start secondary CPUs.
2223 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2227 bool "MIPS Coherent Processing System support"
2228 depends on SYS_SUPPORTS_MIPS_CPS && !64BIT
2231 select MIPS_CPS_PM if HOTPLUG_CPU
2234 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2235 select SYS_SUPPORTS_HOTPLUG_CPU
2236 select SYS_SUPPORTS_SMP
2237 select WEAK_ORDERING
2239 Select this if you wish to run an SMP kernel across multiple cores
2240 within a MIPS Coherent Processing System. When this option is
2241 enabled the kernel will probe for other cores and boot them with
2242 no external assistance. It is safe to enable this when hardware
2243 support is unavailable.
2259 config SB1_PASS_1_WORKAROUNDS
2261 depends on CPU_SB1_PASS_1
2264 config SB1_PASS_2_WORKAROUNDS
2266 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2269 config SB1_PASS_2_1_WORKAROUNDS
2271 depends on CPU_SB1 && CPU_SB1_PASS_2
2275 config ARCH_PHYS_ADDR_T_64BIT
2279 prompt "SmartMIPS or microMIPS ASE support"
2281 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2284 Select this if you want neither microMIPS nor SmartMIPS support
2286 config CPU_HAS_SMARTMIPS
2287 depends on SYS_SUPPORTS_SMARTMIPS
2290 SmartMIPS is a extension of the MIPS32 architecture aimed at
2291 increased security at both hardware and software level for
2292 smartcards. Enabling this option will allow proper use of the
2293 SmartMIPS instructions by Linux applications. However a kernel with
2294 this option will not work on a MIPS core without SmartMIPS core. If
2295 you don't know you probably don't have SmartMIPS and should say N
2298 config CPU_MICROMIPS
2299 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2302 When this option is enabled the kernel will be built using the
2308 bool "Support for the MIPS SIMD Architecture (EXPERIMENTAL)"
2309 depends on CPU_SUPPORTS_MSA
2310 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2312 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2313 and a set of SIMD instructions to operate on them. When this option
2314 is enabled the kernel will support allocating & switching MSA
2315 vector register contexts. If you know that your kernel will only be
2316 running on CPUs which do not support MSA or that your userland will
2317 not be making use of it then you may wish to say N here to reduce
2318 the size & complexity of your kernel.
2329 # Vectored interrupt mode is an R2 feature
2331 config CPU_MIPSR2_IRQ_VI
2335 # Extended interrupt mode is an R2 feature
2337 config CPU_MIPSR2_IRQ_EI
2342 depends on !CPU_R3000
2348 config CPU_DADDI_WORKAROUNDS
2351 config CPU_R4000_WORKAROUNDS
2353 select CPU_R4400_WORKAROUNDS
2355 config CPU_R4400_WORKAROUNDS
2359 # - Highmem only makes sense for the 32-bit kernel.
2360 # - The current highmem code will only work properly on physically indexed
2361 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2362 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2363 # moment we protect the user and offer the highmem option only on machines
2364 # where it's known to be safe. This will not offer highmem on a few systems
2365 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2366 # indexed CPUs but we're playing safe.
2367 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2368 # know they might have memory configurations that could make use of highmem
2372 bool "High Memory Support"
2373 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2375 config CPU_SUPPORTS_HIGHMEM
2378 config SYS_SUPPORTS_HIGHMEM
2381 config SYS_SUPPORTS_SMARTMIPS
2384 config SYS_SUPPORTS_MICROMIPS
2387 config SYS_SUPPORTS_MIPS16
2390 This option must be set if a kernel might be executed on a MIPS16-
2391 enabled CPU even if MIPS16 is not actually being used. In other
2392 words, it makes the kernel MIPS16-tolerant.
2394 config CPU_SUPPORTS_MSA
2397 config ARCH_FLATMEM_ENABLE
2399 depends on !NUMA && !CPU_LOONGSON2
2401 config ARCH_DISCONTIGMEM_ENABLE
2403 default y if SGI_IP27
2405 Say Y to support efficient handling of discontiguous physical memory,
2406 for architectures which are either NUMA (Non-Uniform Memory Access)
2407 or have huge holes in the physical address space for other reasons.
2408 See <file:Documentation/vm/numa> for more.
2410 config ARCH_SPARSEMEM_ENABLE
2412 select SPARSEMEM_STATIC
2416 depends on SYS_SUPPORTS_NUMA
2418 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2419 Access). This option improves performance on systems with more
2420 than two nodes; on two node systems it is generally better to
2421 leave it disabled; on single node systems disable this option
2424 config SYS_SUPPORTS_NUMA
2430 depends on NEED_MULTIPLE_NODES
2432 config HW_PERF_EVENTS
2433 bool "Enable hardware performance counter support for perf events"
2434 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2437 Enable hardware performance counter support for perf events. If
2438 disabled, perf events will use software events only.
2443 bool "Multi-Processing support"
2444 depends on SYS_SUPPORTS_SMP
2446 This enables support for systems with more than one CPU. If you have
2447 a system with only one CPU, say N. If you have a system with more
2448 than one CPU, say Y.
2450 If you say N here, the kernel will run on uni- and multiprocessor
2451 machines, but will use only one CPU of a multiprocessor machine. If
2452 you say Y here, the kernel will run on many, but not all,
2453 uniprocessor machines. On a uniprocessor machine, the kernel
2454 will run faster if you say N here.
2456 People using multiprocessor machines who say Y here should also say
2457 Y to "Enhanced Real Time Clock Support", below.
2459 See also the SMP-HOWTO available at
2460 <http://www.tldp.org/docs.html#howto>.
2462 If you don't know what to do here, say N.
2467 config SYS_SUPPORTS_MIPS_CMP
2470 config SYS_SUPPORTS_MIPS_CPS
2473 config SYS_SUPPORTS_SMP
2476 config NR_CPUS_DEFAULT_4
2479 config NR_CPUS_DEFAULT_8
2482 config NR_CPUS_DEFAULT_16
2485 config NR_CPUS_DEFAULT_32
2488 config NR_CPUS_DEFAULT_64
2492 int "Maximum number of CPUs (2-256)"
2495 default "4" if NR_CPUS_DEFAULT_4
2496 default "8" if NR_CPUS_DEFAULT_8
2497 default "16" if NR_CPUS_DEFAULT_16
2498 default "32" if NR_CPUS_DEFAULT_32
2499 default "64" if NR_CPUS_DEFAULT_64
2501 This allows you to specify the maximum number of CPUs which this
2502 kernel will support. The maximum supported value is 32 for 32-bit
2503 kernel and 64 for 64-bit kernels; the minimum value which makes
2504 sense is 1 for Qemu (useful only for kernel debugging purposes)
2505 and 2 for all others.
2507 This is purely to save memory - each supported CPU adds
2508 approximately eight kilobytes to the kernel image. For best
2509 performance should round up your number of processors to the next
2512 config MIPS_PERF_SHARED_TC_COUNTERS
2516 # Timer Interrupt Frequency Configuration
2520 prompt "Timer frequency"
2523 Allows the configuration of the timer frequency.
2526 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2529 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2532 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2535 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2538 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2541 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2544 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2548 config SYS_SUPPORTS_48HZ
2551 config SYS_SUPPORTS_100HZ
2554 config SYS_SUPPORTS_128HZ
2557 config SYS_SUPPORTS_250HZ
2560 config SYS_SUPPORTS_256HZ
2563 config SYS_SUPPORTS_1000HZ
2566 config SYS_SUPPORTS_1024HZ
2569 config SYS_SUPPORTS_ARBIT_HZ
2571 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2572 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2573 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2574 !SYS_SUPPORTS_1024HZ
2579 default 100 if HZ_100
2580 default 128 if HZ_128
2581 default 250 if HZ_250
2582 default 256 if HZ_256
2583 default 1000 if HZ_1000
2584 default 1024 if HZ_1024
2587 def_bool HIGH_RES_TIMERS
2589 source "kernel/Kconfig.preempt"
2592 bool "Kexec system call"
2594 kexec is a system call that implements the ability to shutdown your
2595 current kernel, and to start another kernel. It is like a reboot
2596 but it is independent of the system firmware. And like a reboot
2597 you can start any kernel with it, not just Linux.
2599 The name comes from the similarity to the exec system call.
2601 It is an ongoing process to be certain the hardware in a machine
2602 is properly shutdown, so do not be surprised if this code does not
2603 initially work for you. As of this writing the exact hardware
2604 interface is strongly in flux, so no good recommendation can be
2608 bool "Kernel crash dumps"
2610 Generate crash dump after being started by kexec.
2611 This should be normally only set in special crash dump kernels
2612 which are loaded in the main kernel with kexec-tools into
2613 a specially reserved region and then later executed after
2614 a crash by kdump/kexec. The crash dump kernel must be compiled
2615 to a memory address not used by the main kernel or firmware using
2618 config PHYSICAL_START
2619 hex "Physical address where the kernel is loaded"
2620 default "0xffffffff84000000" if 64BIT
2621 default "0x84000000" if 32BIT
2622 depends on CRASH_DUMP
2624 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2625 If you plan to use kernel for capturing the crash dump change
2626 this value to start of the reserved region (the "X" value as
2627 specified in the "crashkernel=YM@XM" command line boot parameter
2628 passed to the panic-ed kernel).
2631 bool "Enable seccomp to safely compute untrusted bytecode"
2635 This kernel feature is useful for number crunching applications
2636 that may need to compute untrusted bytecode during their
2637 execution. By using pipes or other transports made available to
2638 the process as file descriptors supporting the read/write
2639 syscalls, it's possible to isolate those applications in
2640 their own address space using seccomp. Once seccomp is
2641 enabled via /proc/<pid>/seccomp, it cannot be disabled
2642 and the task is only allowed to execute a few safe syscalls
2643 defined by each seccomp mode.
2645 If unsure, say Y. Only embedded should say N here.
2647 config MIPS_O32_FP64_SUPPORT
2648 bool "Support for O32 binaries using 64-bit FP (EXPERIMENTAL)"
2649 depends on 32BIT || MIPS32_O32
2651 When this is enabled, the kernel will support use of 64-bit floating
2652 point registers with binaries using the O32 ABI along with the
2653 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2654 32-bit MIPS systems this support is at the cost of increasing the
2655 size and complexity of the compiled FPU emulator. Thus if you are
2656 running a MIPS32 system and know that none of your userland binaries
2657 will require 64-bit floating point, you may wish to reduce the size
2658 of your kernel & potentially improve FP emulation performance by
2661 Although binutils currently supports use of this flag the details
2662 concerning its effect upon the O32 ABI in userland are still being
2663 worked on. In order to avoid userland becoming dependant upon current
2664 behaviour before the details have been finalised, this option should
2665 be considered experimental and only enabled by those working upon
2673 select OF_EARLY_FLATTREE
2681 config LOCKDEP_SUPPORT
2685 config STACKTRACE_SUPPORT
2689 config PGTABLE_LEVELS
2691 default 3 if 64BIT && !PAGE_SIZE_64KB
2694 source "init/Kconfig"
2696 source "kernel/Kconfig.freezer"
2698 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2706 bool "Support for PCI controller"
2707 depends on HW_HAS_PCI
2709 select NO_GENERIC_PCI_IOPORT_MAP
2711 Find out whether you have a PCI motherboard. PCI is the name of a
2712 bus system, i.e. the way the CPU talks to the other stuff inside
2713 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2717 bool "Support for HT-linked PCI"
2719 depends on CPU_LOONGSON3
2723 Loongson family machines use Hyper-Transport bus for inter-core
2724 connection and device connection. The PCI bus is a subordinate
2725 linked at HT. Choose Y for Loongson-3 based machines.
2730 source "drivers/pci/Kconfig"
2732 source "drivers/pci/pcie/Kconfig"
2735 # ISA support is now enabled via select. Too many systems still have the one
2736 # or other ISA chip on the board that users don't know about so don't expect
2737 # users to choose the right thing ...
2744 depends on HW_HAS_EISA
2746 select GENERIC_ISA_DMA
2748 The Extended Industry Standard Architecture (EISA) bus was
2749 developed as an open alternative to the IBM MicroChannel bus.
2751 The EISA bus provided some of the features of the IBM MicroChannel
2752 bus while maintaining backward compatibility with cards made for
2753 the older ISA bus. The EISA bus saw limited use between 1988 and
2754 1995 when it was made obsolete by the PCI bus.
2756 Say Y here if you are building a kernel for an EISA-based machine.
2760 source "drivers/eisa/Kconfig"
2763 bool "TURBOchannel support"
2764 depends on MACH_DECSTATION
2766 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2767 processors. TURBOchannel programming specifications are available
2769 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2771 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2772 Linux driver support status is documented at:
2773 <http://www.linux-mips.org/wiki/DECstation>
2783 select MIPS_EXTERNAL_TIMER
2791 source "drivers/pcmcia/Kconfig"
2793 source "drivers/pci/hotplug/Kconfig"
2796 tristate "RapidIO support"
2800 If you say Y here, the kernel will include drivers and
2801 infrastructure code to support RapidIO interconnect devices.
2803 source "drivers/rapidio/Kconfig"
2807 menu "Executable file formats"
2809 source "fs/Kconfig.binfmt"
2814 config MIPS32_COMPAT
2820 config SYSVIPC_COMPAT
2824 bool "Kernel support for o32 binaries"
2826 select ARCH_WANT_OLD_COMPAT_IPC
2828 select MIPS32_COMPAT
2829 select SYSVIPC_COMPAT if SYSVIPC
2831 Select this option if you want to run o32 binaries. These are pure
2832 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2833 existing binaries are in this format.
2838 bool "Kernel support for n32 binaries"
2841 select MIPS32_COMPAT
2842 select SYSVIPC_COMPAT if SYSVIPC
2844 Select this option if you want to run n32 binaries. These are
2845 64-bit binaries using 32-bit quantities for addressing and certain
2846 data that would normally be 64-bit. They are used in special
2853 default y if MIPS32_O32 || MIPS32_N32
2857 menu "Power management options"
2859 config ARCH_HIBERNATION_POSSIBLE
2861 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2863 config ARCH_SUSPEND_POSSIBLE
2865 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2867 source "kernel/power/Kconfig"
2871 config MIPS_EXTERNAL_TIMER
2874 menu "CPU Power Management"
2876 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2877 source "drivers/cpufreq/Kconfig"
2880 source "drivers/cpuidle/Kconfig"
2884 source "net/Kconfig"
2886 source "drivers/Kconfig"
2888 source "drivers/firmware/Kconfig"
2892 source "arch/mips/Kconfig.debug"
2894 source "security/Kconfig"
2896 source "crypto/Kconfig"
2898 source "lib/Kconfig"
2900 source "arch/mips/kvm/Kconfig"