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_DEBUG_KMEMLEAK
25 select HAVE_SYSCALL_TRACEPOINTS
26 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
27 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
28 select RTC_LIB if !MACH_LOONGSON
29 select GENERIC_ATOMIC64 if !64BIT
30 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
32 select HAVE_DMA_CONTIGUOUS
33 select HAVE_DMA_API_DEBUG
34 select GENERIC_IRQ_PROBE
35 select GENERIC_IRQ_SHOW
36 select GENERIC_PCI_IOMAP
37 select HAVE_ARCH_JUMP_LABEL
38 select ARCH_WANT_IPC_PARSE_VERSION
39 select IRQ_FORCED_THREADING
41 select HAVE_MEMBLOCK_NODE_MAP
42 select ARCH_DISCARD_MEMBLOCK
43 select GENERIC_SMP_IDLE_THREAD
44 select BUILDTIME_EXTABLE_SORT
45 select GENERIC_CLOCKEVENTS
46 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
47 select GENERIC_CMOS_UPDATE
48 select HAVE_MOD_ARCH_SPECIFIC
50 select MODULES_USE_ELF_REL if MODULES
51 select MODULES_USE_ELF_RELA if MODULES && 64BIT
52 select CLONE_BACKWARDS
53 select HAVE_DEBUG_STACKOVERFLOW
54 select HAVE_CC_STACKPROTECTOR
55 select CPU_PM if CPU_IDLE
56 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
57 select ARCH_BINFMT_ELF_STATE
58 select SYSCTL_EXCEPTION_TRACE
59 select HAVE_VIRT_CPU_ACCOUNTING_GEN
60 select HAVE_IRQ_TIME_ACCOUNTING
62 menu "Machine selection"
69 bool "Alchemy processor based machines"
70 select ARCH_PHYS_ADDR_T_64BIT
74 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
75 select SYS_HAS_CPU_MIPS32_R1
76 select SYS_SUPPORTS_32BIT_KERNEL
77 select SYS_SUPPORTS_APM_EMULATION
78 select ARCH_REQUIRE_GPIOLIB
79 select SYS_SUPPORTS_ZBOOT
83 bool "Texas Instruments AR7"
85 select DMA_NONCOHERENT
91 select SYS_HAS_CPU_MIPS32_R1
92 select SYS_HAS_EARLY_PRINTK
93 select SYS_SUPPORTS_32BIT_KERNEL
94 select SYS_SUPPORTS_LITTLE_ENDIAN
95 select SYS_SUPPORTS_MIPS16
96 select SYS_SUPPORTS_ZBOOT_UART16550
97 select ARCH_REQUIRE_GPIOLIB
101 Support for the Texas Instruments AR7 System-on-a-Chip
102 family: TNETD7100, 7200 and 7300.
105 bool "Atheros AR231x/AR531x SoC support"
108 select DMA_NONCOHERENT
111 select SYS_HAS_CPU_MIPS32_R1
112 select SYS_SUPPORTS_BIG_ENDIAN
113 select SYS_SUPPORTS_32BIT_KERNEL
114 select SYS_HAS_EARLY_PRINTK
116 Support for Atheros AR231x and Atheros AR531x based boards
119 bool "Atheros AR71XX/AR724X/AR913X based boards"
120 select ARCH_REQUIRE_GPIOLIB
124 select DMA_NONCOHERENT
129 select SYS_HAS_CPU_MIPS32_R2
130 select SYS_HAS_EARLY_PRINTK
131 select SYS_SUPPORTS_32BIT_KERNEL
132 select SYS_SUPPORTS_BIG_ENDIAN
133 select SYS_SUPPORTS_MIPS16
135 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
138 bool "Broadcom Generic BMIPS kernel"
140 select NO_EXCEPT_FILL
146 select BCM7038_L1_IRQ
147 select BCM7120_L2_IRQ
148 select BRCMSTB_L2_IRQ
150 select RAW_IRQ_ACCESSORS
151 select DMA_NONCOHERENT
152 select SYS_SUPPORTS_32BIT_KERNEL
153 select SYS_SUPPORTS_LITTLE_ENDIAN
154 select SYS_SUPPORTS_BIG_ENDIAN
155 select SYS_SUPPORTS_HIGHMEM
156 select SYS_HAS_CPU_BMIPS32_3300
157 select SYS_HAS_CPU_BMIPS4350
158 select SYS_HAS_CPU_BMIPS4380
159 select SYS_HAS_CPU_BMIPS5000
161 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
162 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
163 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
164 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
166 Build a generic DT-based kernel image that boots on select
167 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
168 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
169 must be set appropriately for your board.
172 bool "Broadcom BCM47XX based boards"
173 select ARCH_WANT_OPTIONAL_GPIOLIB
177 select DMA_NONCOHERENT
180 select SYS_HAS_CPU_MIPS32_R1
181 select NO_EXCEPT_FILL
182 select SYS_SUPPORTS_32BIT_KERNEL
183 select SYS_SUPPORTS_LITTLE_ENDIAN
184 select SYS_SUPPORTS_MIPS16
185 select SYS_HAS_EARLY_PRINTK
186 select USE_GENERIC_EARLY_PRINTK_8250
188 select LEDS_GPIO_REGISTER
190 Support for BCM47XX based boards
193 bool "Broadcom BCM63XX based boards"
198 select DMA_NONCOHERENT
200 select SYS_SUPPORTS_32BIT_KERNEL
201 select SYS_SUPPORTS_BIG_ENDIAN
202 select SYS_HAS_EARLY_PRINTK
204 select ARCH_REQUIRE_GPIOLIB
206 select MIPS_L1_CACHE_SHIFT_4
208 Support for BCM63XX based boards
215 select DMA_NONCOHERENT
221 select PCI_GT64XXX_PCI0
223 select SYS_HAS_CPU_NEVADA
224 select SYS_HAS_EARLY_PRINTK
225 select SYS_SUPPORTS_32BIT_KERNEL
226 select SYS_SUPPORTS_64BIT_KERNEL
227 select SYS_SUPPORTS_LITTLE_ENDIAN
228 select USE_GENERIC_EARLY_PRINTK_8250
230 config MACH_DECSTATION
234 select CEVT_R4K if CPU_R4X00
236 select CSRC_R4K if CPU_R4X00
237 select CPU_DADDI_WORKAROUNDS if 64BIT
238 select CPU_R4000_WORKAROUNDS if 64BIT
239 select CPU_R4400_WORKAROUNDS if 64BIT
240 select DMA_NONCOHERENT
243 select SYS_HAS_CPU_R3000
244 select SYS_HAS_CPU_R4X00
245 select SYS_SUPPORTS_32BIT_KERNEL
246 select SYS_SUPPORTS_64BIT_KERNEL
247 select SYS_SUPPORTS_LITTLE_ENDIAN
248 select SYS_SUPPORTS_128HZ
249 select SYS_SUPPORTS_256HZ
250 select SYS_SUPPORTS_1024HZ
251 select MIPS_L1_CACHE_SHIFT_4
253 This enables support for DEC's MIPS based workstations. For details
254 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
255 DECstation porting pages on <http://decstation.unix-ag.org/>.
257 If you have one of the following DECstation Models you definitely
258 want to choose R4xx0 for the CPU Type:
265 otherwise choose R3000.
268 bool "Jazz family of machines"
271 select ARCH_MAY_HAVE_PC_FDC
274 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
275 select GENERIC_ISA_DMA
276 select HAVE_PCSPKR_PLATFORM
281 select SYS_HAS_CPU_R4X00
282 select SYS_SUPPORTS_32BIT_KERNEL
283 select SYS_SUPPORTS_64BIT_KERNEL
284 select SYS_SUPPORTS_100HZ
286 This a family of machines based on the MIPS R4030 chipset which was
287 used by several vendors to build RISC/os and Windows NT workstations.
288 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
289 Olivetti M700-10 workstations.
292 bool "Ingenic JZ4740 based machines"
293 select SYS_HAS_CPU_MIPS32_R1
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
305 bool "Lantiq based platforms"
306 select DMA_NONCOHERENT
310 select SYS_HAS_CPU_MIPS32_R1
311 select SYS_HAS_CPU_MIPS32_R2
312 select SYS_SUPPORTS_BIG_ENDIAN
313 select SYS_SUPPORTS_32BIT_KERNEL
314 select SYS_SUPPORTS_MIPS16
315 select SYS_SUPPORTS_MULTITHREADING
316 select SYS_HAS_EARLY_PRINTK
317 select ARCH_REQUIRE_GPIOLIB
320 select HAVE_MACH_CLKDEV
324 select PINCTRL_LANTIQ
325 select ARCH_HAS_RESET_CONTROLLER
326 select RESET_CONTROLLER
329 bool "LASAT Networks platforms"
333 select DMA_NONCOHERENT
334 select SYS_HAS_EARLY_PRINTK
337 select PCI_GT64XXX_PCI0
339 select R5000_CPU_SCACHE
340 select SYS_HAS_CPU_R5000
341 select SYS_SUPPORTS_32BIT_KERNEL
342 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
343 select SYS_SUPPORTS_LITTLE_ENDIAN
346 bool "Loongson family of machines"
347 select SYS_SUPPORTS_ZBOOT
349 This enables the support of Loongson family of machines.
351 Loongson is a family of general-purpose MIPS-compatible CPUs.
352 developed at Institute of Computing Technology (ICT),
353 Chinese Academy of Sciences (CAS) in the People's Republic
354 of China. The chief architect is Professor Weiwu Hu.
356 config MACH_LOONGSON1
357 bool "Loongson 1 family of machines"
358 select SYS_SUPPORTS_ZBOOT
360 This enables support for the Loongson 1 based machines.
362 Loongson 1 is a family of 32-bit MIPS-compatible SoCs developed by
363 the ICT (Institute of Computing Technology) and the Chinese Academy
366 config MACH_PISTACHIO
367 bool "IMG Pistachio SoC based boards"
368 select ARCH_REQUIRE_GPIOLIB
372 select CLKSRC_MIPS_GIC
375 select DMA_MAYBE_COHERENT
379 select MIPS_CPU_SCACHE
383 select SYS_HAS_CPU_MIPS32_R2
384 select SYS_SUPPORTS_32BIT_KERNEL
385 select SYS_SUPPORTS_LITTLE_ENDIAN
386 select SYS_SUPPORTS_MIPS_CPS
387 select SYS_SUPPORTS_MULTITHREADING
388 select SYS_SUPPORTS_ZBOOT
391 This enables support for the IMG Pistachio SoC platform.
394 bool "MIPS Malta board"
395 select ARCH_MAY_HAVE_PC_FDC
400 select CLKSRC_MIPS_GIC
401 select DMA_MAYBE_COHERENT
402 select GENERIC_ISA_DMA
403 select HAVE_PCSPKR_PLATFORM
410 select MIPS_CPU_SCACHE
411 select MIPS_L1_CACHE_SHIFT_6
412 select PCI_GT64XXX_PCI0
415 select SYS_HAS_CPU_MIPS32_R1
416 select SYS_HAS_CPU_MIPS32_R2
417 select SYS_HAS_CPU_MIPS32_R3_5
418 select SYS_HAS_CPU_MIPS32_R6
419 select SYS_HAS_CPU_MIPS64_R1
420 select SYS_HAS_CPU_MIPS64_R2
421 select SYS_HAS_CPU_MIPS64_R6
422 select SYS_HAS_CPU_NEVADA
423 select SYS_HAS_CPU_RM7000
424 select SYS_SUPPORTS_32BIT_KERNEL
425 select SYS_SUPPORTS_64BIT_KERNEL
426 select SYS_SUPPORTS_BIG_ENDIAN
427 select SYS_SUPPORTS_LITTLE_ENDIAN
428 select SYS_SUPPORTS_MICROMIPS
429 select SYS_SUPPORTS_MIPS_CMP
430 select SYS_SUPPORTS_MIPS_CPS
431 select SYS_SUPPORTS_MIPS16
432 select SYS_SUPPORTS_MULTITHREADING
433 select SYS_SUPPORTS_SMARTMIPS
434 select SYS_SUPPORTS_ZBOOT
436 This enables support for the MIPS Technologies Malta evaluation
440 bool "MIPS SEAD3 board"
446 select CLKSRC_MIPS_GIC
447 select CPU_MIPSR2_IRQ_VI
448 select CPU_MIPSR2_IRQ_EI
449 select DMA_NONCOHERENT
454 select SYS_HAS_CPU_MIPS32_R1
455 select SYS_HAS_CPU_MIPS32_R2
456 select SYS_HAS_CPU_MIPS64_R1
457 select SYS_HAS_EARLY_PRINTK
458 select SYS_SUPPORTS_32BIT_KERNEL
459 select SYS_SUPPORTS_64BIT_KERNEL
460 select SYS_SUPPORTS_BIG_ENDIAN
461 select SYS_SUPPORTS_LITTLE_ENDIAN
462 select SYS_SUPPORTS_SMARTMIPS
463 select SYS_SUPPORTS_MICROMIPS
464 select SYS_SUPPORTS_MIPS16
465 select USB_EHCI_BIG_ENDIAN_DESC
466 select USB_EHCI_BIG_ENDIAN_MMIO
469 This enables support for the MIPS Technologies SEAD3 evaluation
473 bool "NEC EMMA2RH Mark-eins board"
477 This enables support for the NEC Electronics Mark-eins boards.
480 bool "NEC VR4100 series based machines"
483 select SYS_HAS_CPU_VR41XX
484 select SYS_SUPPORTS_MIPS16
485 select ARCH_REQUIRE_GPIOLIB
488 bool "NXP STB220 board"
491 Support for NXP Semiconductors STB220 Development Board.
498 Support for NXP Semiconductors STB225 Development Board.
501 bool "PMC-Sierra MSP chipsets"
504 select DMA_NONCOHERENT
506 select NO_EXCEPT_FILL
508 select SYS_HAS_CPU_MIPS32_R1
509 select SYS_HAS_CPU_MIPS32_R2
510 select SYS_SUPPORTS_32BIT_KERNEL
511 select SYS_SUPPORTS_BIG_ENDIAN
512 select SYS_SUPPORTS_MIPS16
515 select SERIAL_8250_CONSOLE
516 select USB_EHCI_BIG_ENDIAN_MMIO
517 select USB_EHCI_BIG_ENDIAN_DESC
519 This adds support for the PMC-Sierra family of Multi-Service
520 Processor System-On-A-Chips. These parts include a number
521 of integrated peripherals, interfaces and DSPs in addition to
522 a variety of MIPS cores.
525 bool "Ralink based machines"
529 select DMA_NONCOHERENT
532 select SYS_HAS_CPU_MIPS32_R1
533 select SYS_HAS_CPU_MIPS32_R2
534 select SYS_SUPPORTS_32BIT_KERNEL
535 select SYS_SUPPORTS_LITTLE_ENDIAN
536 select SYS_SUPPORTS_MIPS16
537 select SYS_HAS_EARLY_PRINTK
538 select HAVE_MACH_CLKDEV
540 select ARCH_HAS_RESET_CONTROLLER
541 select RESET_CONTROLLER
544 bool "SGI IP22 (Indy/Indigo2)"
550 select DEFAULT_SGI_PARTITION
551 select DMA_NONCOHERENT
555 select IP22_CPU_SCACHE
557 select GENERIC_ISA_DMA_SUPPORT_BROKEN
559 select SGI_HAS_INDYDOG
565 select SYS_HAS_CPU_R4X00
566 select SYS_HAS_CPU_R5000
568 # Disable EARLY_PRINTK for now since it leads to overwritten prom
569 # memory during early boot on some machines.
571 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
572 # for a more details discussion
574 # select SYS_HAS_EARLY_PRINTK
575 select SYS_SUPPORTS_32BIT_KERNEL
576 select SYS_SUPPORTS_64BIT_KERNEL
577 select SYS_SUPPORTS_BIG_ENDIAN
578 select MIPS_L1_CACHE_SHIFT_7
580 This are the SGI Indy, Challenge S and Indigo2, as well as certain
581 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
582 that runs on these, say Y here.
585 bool "SGI IP27 (Origin200/2000)"
589 select DEFAULT_SGI_PARTITION
591 select SYS_HAS_EARLY_PRINTK
593 select NR_CPUS_DEFAULT_64
594 select SYS_HAS_CPU_R10000
595 select SYS_SUPPORTS_64BIT_KERNEL
596 select SYS_SUPPORTS_BIG_ENDIAN
597 select SYS_SUPPORTS_NUMA
598 select SYS_SUPPORTS_SMP
599 select MIPS_L1_CACHE_SHIFT_7
601 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
602 workstations. To compile a Linux kernel that runs on these, say Y
606 bool "SGI IP28 (Indigo2 R10k)"
612 select DEFAULT_SGI_PARTITION
613 select DMA_NONCOHERENT
614 select GENERIC_ISA_DMA_SUPPORT_BROKEN
620 select SGI_HAS_INDYDOG
626 select SYS_HAS_CPU_R10000
628 # Disable EARLY_PRINTK for now since it leads to overwritten prom
629 # memory during early boot on some machines.
631 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
632 # for a more details discussion
634 # select SYS_HAS_EARLY_PRINTK
635 select SYS_SUPPORTS_64BIT_KERNEL
636 select SYS_SUPPORTS_BIG_ENDIAN
637 select MIPS_L1_CACHE_SHIFT_7
639 This is the SGI Indigo2 with R10000 processor. To compile a Linux
640 kernel that runs on these, say Y here.
649 select DMA_NONCOHERENT
652 select R5000_CPU_SCACHE
653 select RM7000_CPU_SCACHE
654 select SYS_HAS_CPU_R5000
655 select SYS_HAS_CPU_R10000 if BROKEN
656 select SYS_HAS_CPU_RM7000
657 select SYS_HAS_CPU_NEVADA
658 select SYS_SUPPORTS_64BIT_KERNEL
659 select SYS_SUPPORTS_BIG_ENDIAN
661 If you want this kernel to run on SGI O2 workstation, say Y here.
664 bool "Sibyte BCM91120C-CRhine"
667 select SIBYTE_BCM1120
669 select SYS_HAS_CPU_SB1
670 select SYS_SUPPORTS_BIG_ENDIAN
671 select SYS_SUPPORTS_LITTLE_ENDIAN
674 bool "Sibyte BCM91120x-Carmel"
677 select SIBYTE_BCM1120
679 select SYS_HAS_CPU_SB1
680 select SYS_SUPPORTS_BIG_ENDIAN
681 select SYS_SUPPORTS_LITTLE_ENDIAN
684 bool "Sibyte BCM91125C-CRhone"
687 select SIBYTE_BCM1125
689 select SYS_HAS_CPU_SB1
690 select SYS_SUPPORTS_BIG_ENDIAN
691 select SYS_SUPPORTS_HIGHMEM
692 select SYS_SUPPORTS_LITTLE_ENDIAN
695 bool "Sibyte BCM91125E-Rhone"
698 select SIBYTE_BCM1125H
700 select SYS_HAS_CPU_SB1
701 select SYS_SUPPORTS_BIG_ENDIAN
702 select SYS_SUPPORTS_LITTLE_ENDIAN
705 bool "Sibyte BCM91250A-SWARM"
708 select HAVE_PATA_PLATFORM
711 select SYS_HAS_CPU_SB1
712 select SYS_SUPPORTS_BIG_ENDIAN
713 select SYS_SUPPORTS_HIGHMEM
714 select SYS_SUPPORTS_LITTLE_ENDIAN
715 select ZONE_DMA32 if 64BIT
717 config SIBYTE_LITTLESUR
718 bool "Sibyte BCM91250C2-LittleSur"
721 select HAVE_PATA_PLATFORM
724 select SYS_HAS_CPU_SB1
725 select SYS_SUPPORTS_BIG_ENDIAN
726 select SYS_SUPPORTS_HIGHMEM
727 select SYS_SUPPORTS_LITTLE_ENDIAN
729 config SIBYTE_SENTOSA
730 bool "Sibyte BCM91250E-Sentosa"
735 select SYS_HAS_CPU_SB1
736 select SYS_SUPPORTS_BIG_ENDIAN
737 select SYS_SUPPORTS_LITTLE_ENDIAN
740 bool "Sibyte BCM91480B-BigSur"
743 select NR_CPUS_DEFAULT_4
744 select SIBYTE_BCM1x80
746 select SYS_HAS_CPU_SB1
747 select SYS_SUPPORTS_BIG_ENDIAN
748 select SYS_SUPPORTS_HIGHMEM
749 select SYS_SUPPORTS_LITTLE_ENDIAN
750 select ZONE_DMA32 if 64BIT
753 bool "SNI RM200/300/400"
754 select FW_ARC if CPU_LITTLE_ENDIAN
755 select FW_ARC32 if CPU_LITTLE_ENDIAN
756 select FW_SNIPROM if CPU_BIG_ENDIAN
757 select ARCH_MAY_HAVE_PC_FDC
761 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
762 select DMA_NONCOHERENT
763 select GENERIC_ISA_DMA
764 select HAVE_PCSPKR_PLATFORM
771 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
772 select SYS_HAS_CPU_R4X00
773 select SYS_HAS_CPU_R5000
774 select SYS_HAS_CPU_R10000
775 select R5000_CPU_SCACHE
776 select SYS_HAS_EARLY_PRINTK
777 select SYS_SUPPORTS_32BIT_KERNEL
778 select SYS_SUPPORTS_64BIT_KERNEL
779 select SYS_SUPPORTS_BIG_ENDIAN
780 select SYS_SUPPORTS_HIGHMEM
781 select SYS_SUPPORTS_LITTLE_ENDIAN
783 The SNI RM200/300/400 are MIPS-based machines manufactured by
784 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
785 Technology and now in turn merged with Fujitsu. Say Y here to
786 support this machine type.
789 bool "Toshiba TX39 series based machines"
792 bool "Toshiba TX49 series based machines"
794 config MIKROTIK_RB532
795 bool "Mikrotik RB532 boards"
798 select DMA_NONCOHERENT
801 select SYS_HAS_CPU_MIPS32_R1
802 select SYS_SUPPORTS_32BIT_KERNEL
803 select SYS_SUPPORTS_LITTLE_ENDIAN
806 select ARCH_REQUIRE_GPIOLIB
807 select MIPS_L1_CACHE_SHIFT_4
809 Support the Mikrotik(tm) RouterBoard 532 series,
810 based on the IDT RC32434 SoC.
812 config CAVIUM_OCTEON_SOC
813 bool "Cavium Networks Octeon SoC based boards"
815 select ARCH_PHYS_ADDR_T_64BIT
817 select SYS_SUPPORTS_64BIT_KERNEL
818 select SYS_SUPPORTS_BIG_ENDIAN
820 select SYS_SUPPORTS_LITTLE_ENDIAN
821 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
822 select SYS_HAS_EARLY_PRINTK
823 select SYS_HAS_CPU_CAVIUM_OCTEON
828 select ARCH_REQUIRE_GPIOLIB
831 select ARCH_SPARSEMEM_ENABLE
832 select SYS_SUPPORTS_SMP
833 select NR_CPUS_DEFAULT_16
835 select MTD_COMPLEX_MAPPINGS
837 This option supports all of the Octeon reference boards from Cavium
838 Networks. It builds a kernel that dynamically determines the Octeon
839 CPU type and supports all known board reference implementations.
840 Some of the supported boards are:
847 Say Y here for most Octeon reference boards.
850 bool "Netlogic XLR/XLS based systems"
853 select SYS_HAS_CPU_XLR
854 select SYS_SUPPORTS_SMP
857 select SYS_SUPPORTS_32BIT_KERNEL
858 select SYS_SUPPORTS_64BIT_KERNEL
859 select ARCH_PHYS_ADDR_T_64BIT
860 select SYS_SUPPORTS_BIG_ENDIAN
861 select SYS_SUPPORTS_HIGHMEM
863 select NR_CPUS_DEFAULT_32
867 select ZONE_DMA32 if 64BIT
869 select SYS_HAS_EARLY_PRINTK
870 select SYS_SUPPORTS_ZBOOT
871 select SYS_SUPPORTS_ZBOOT_UART16550
873 Support for systems based on Netlogic XLR and XLS processors.
874 Say Y here if you have a XLR or XLS based board.
877 bool "Netlogic XLP based systems"
880 select SYS_HAS_CPU_XLP
881 select SYS_SUPPORTS_SMP
883 select SYS_SUPPORTS_32BIT_KERNEL
884 select SYS_SUPPORTS_64BIT_KERNEL
885 select ARCH_PHYS_ADDR_T_64BIT
886 select SYS_SUPPORTS_BIG_ENDIAN
887 select SYS_SUPPORTS_LITTLE_ENDIAN
888 select SYS_SUPPORTS_HIGHMEM
890 select NR_CPUS_DEFAULT_32
894 select ZONE_DMA32 if 64BIT
896 select SYS_HAS_EARLY_PRINTK
898 select SYS_SUPPORTS_ZBOOT
899 select SYS_SUPPORTS_ZBOOT_UART16550
901 This board is based on Netlogic XLP Processor.
902 Say Y here if you have a XLP based board.
905 bool "Para-Virtualized guest system"
909 select SYS_SUPPORTS_64BIT_KERNEL
910 select SYS_SUPPORTS_32BIT_KERNEL
911 select SYS_SUPPORTS_BIG_ENDIAN
912 select SYS_SUPPORTS_SMP
913 select NR_CPUS_DEFAULT_4
914 select SYS_HAS_EARLY_PRINTK
915 select SYS_HAS_CPU_MIPS32_R2
916 select SYS_HAS_CPU_MIPS64_R2
917 select SYS_HAS_CPU_CAVIUM_OCTEON
921 This option supports guest running under ????
925 source "arch/mips/alchemy/Kconfig"
926 source "arch/mips/ath25/Kconfig"
927 source "arch/mips/ath79/Kconfig"
928 source "arch/mips/bcm47xx/Kconfig"
929 source "arch/mips/bcm63xx/Kconfig"
930 source "arch/mips/bmips/Kconfig"
931 source "arch/mips/jazz/Kconfig"
932 source "arch/mips/jz4740/Kconfig"
933 source "arch/mips/lantiq/Kconfig"
934 source "arch/mips/lasat/Kconfig"
935 source "arch/mips/pmcs-msp71xx/Kconfig"
936 source "arch/mips/ralink/Kconfig"
937 source "arch/mips/sgi-ip27/Kconfig"
938 source "arch/mips/sibyte/Kconfig"
939 source "arch/mips/txx9/Kconfig"
940 source "arch/mips/vr41xx/Kconfig"
941 source "arch/mips/cavium-octeon/Kconfig"
942 source "arch/mips/loongson/Kconfig"
943 source "arch/mips/loongson1/Kconfig"
944 source "arch/mips/netlogic/Kconfig"
945 source "arch/mips/paravirt/Kconfig"
949 config RWSEM_GENERIC_SPINLOCK
953 config RWSEM_XCHGADD_ALGORITHM
956 config ARCH_HAS_ILOG2_U32
960 config ARCH_HAS_ILOG2_U64
964 config GENERIC_HWEIGHT
968 config GENERIC_CALIBRATE_DELAY
972 config SCHED_OMIT_FRAME_POINTER
977 # Select some configuration options automatically based on user selections.
982 config ARCH_MAY_HAVE_PC_FDC
1019 select ARCH_REQUIRE_GPIOLIB
1025 config ARCH_DMA_ADDR_T_64BIT
1026 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1028 config DMA_MAYBE_COHERENT
1029 select DMA_NONCOHERENT
1035 config DMA_NONCOHERENT
1037 select NEED_DMA_MAP_STATE
1039 config NEED_DMA_MAP_STATE
1042 config SYS_HAS_EARLY_PRINTK
1046 bool "Support for hot-pluggable CPUs"
1047 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
1049 Say Y here to allow turning CPUs off and on. CPUs can be
1050 controlled through /sys/devices/system/cpu.
1051 (Note: power management support will enable this option
1052 automatically on SMP systems. )
1053 Say N if you want to disable CPU hotplug.
1055 config SYS_SUPPORTS_HOTPLUG_CPU
1062 config MIPS_BONITO64
1077 config NO_IOPORT_MAP
1083 config GENERIC_ISA_DMA
1085 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1088 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1090 select GENERIC_ISA_DMA
1095 config HOLES_IN_ZONE
1099 # Endianness selection. Sufficiently obscure so many users don't know what to
1100 # answer,so we try hard to limit the available choices. Also the use of a
1101 # choice statement should be more obvious to the user.
1104 prompt "Endianness selection"
1106 Some MIPS machines can be configured for either little or big endian
1107 byte order. These modes require different kernels and a different
1108 Linux distribution. In general there is one preferred byteorder for a
1109 particular system but some systems are just as commonly used in the
1110 one or the other endianness.
1112 config CPU_BIG_ENDIAN
1114 depends on SYS_SUPPORTS_BIG_ENDIAN
1116 config CPU_LITTLE_ENDIAN
1117 bool "Little endian"
1118 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1125 config SYS_SUPPORTS_APM_EMULATION
1128 config SYS_SUPPORTS_BIG_ENDIAN
1131 config SYS_SUPPORTS_LITTLE_ENDIAN
1134 config SYS_SUPPORTS_HUGETLBFS
1136 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1139 config MIPS_HUGE_TLB_SUPPORT
1140 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1161 config PCI_GT64XXX_PCI0
1164 config NO_EXCEPT_FILL
1171 select DMA_NONCOHERENT
1173 select SWAP_IO_SPACE
1174 select SYS_HAS_CPU_R5500
1175 select SYS_SUPPORTS_32BIT_KERNEL
1176 select SYS_SUPPORTS_64BIT_KERNEL
1177 select SYS_SUPPORTS_BIG_ENDIAN
1184 select DMA_NONCOHERENT
1185 select SYS_HAS_CPU_MIPS32_R2
1186 select SYS_SUPPORTS_32BIT_KERNEL
1187 select SYS_SUPPORTS_LITTLE_ENDIAN
1188 select SYS_SUPPORTS_BIG_ENDIAN
1189 select SYS_SUPPORTS_MIPS16
1190 select CPU_MIPSR2_IRQ_VI
1199 config SWAP_IO_SPACE
1202 config SGI_HAS_INDYDOG
1214 config SGI_HAS_ZILOG
1217 config SGI_HAS_I8042
1220 config DEFAULT_SGI_PARTITION
1232 config MIPS_L1_CACHE_SHIFT_4
1235 config MIPS_L1_CACHE_SHIFT_5
1238 config MIPS_L1_CACHE_SHIFT_6
1241 config MIPS_L1_CACHE_SHIFT_7
1244 config MIPS_L1_CACHE_SHIFT
1246 default "7" if MIPS_L1_CACHE_SHIFT_7
1247 default "6" if MIPS_L1_CACHE_SHIFT_6
1248 default "5" if MIPS_L1_CACHE_SHIFT_5
1249 default "4" if MIPS_L1_CACHE_SHIFT_4
1252 config HAVE_STD_PC_SERIAL_PORT
1256 bool "ARC console support"
1257 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1261 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1266 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1275 menu "CPU selection"
1281 config CPU_LOONGSON3
1282 bool "Loongson 3 CPU"
1283 depends on SYS_HAS_CPU_LOONGSON3
1284 select CPU_SUPPORTS_64BIT_KERNEL
1285 select CPU_SUPPORTS_HIGHMEM
1286 select CPU_SUPPORTS_HUGEPAGES
1287 select WEAK_ORDERING
1288 select WEAK_REORDERING_BEYOND_LLSC
1290 The Loongson 3 processor implements the MIPS64R2 instruction
1291 set with many extensions.
1293 config CPU_LOONGSON2E
1295 depends on SYS_HAS_CPU_LOONGSON2E
1296 select CPU_LOONGSON2
1298 The Loongson 2E processor implements the MIPS III instruction set
1299 with many extensions.
1301 It has an internal FPGA northbridge, which is compatible to
1304 config CPU_LOONGSON2F
1306 depends on SYS_HAS_CPU_LOONGSON2F
1307 select CPU_LOONGSON2
1308 select ARCH_REQUIRE_GPIOLIB
1310 The Loongson 2F processor implements the MIPS III instruction set
1311 with many extensions.
1313 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1314 have a similar programming interface with FPGA northbridge used in
1317 config CPU_LOONGSON1B
1319 depends on SYS_HAS_CPU_LOONGSON1B
1320 select CPU_LOONGSON1
1322 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1323 release 2 instruction set.
1325 config CPU_MIPS32_R1
1326 bool "MIPS32 Release 1"
1327 depends on SYS_HAS_CPU_MIPS32_R1
1328 select CPU_HAS_PREFETCH
1329 select CPU_SUPPORTS_32BIT_KERNEL
1330 select CPU_SUPPORTS_HIGHMEM
1332 Choose this option to build a kernel for release 1 or later of the
1333 MIPS32 architecture. Most modern embedded systems with a 32-bit
1334 MIPS processor are based on a MIPS32 processor. If you know the
1335 specific type of processor in your system, choose those that one
1336 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1337 Release 2 of the MIPS32 architecture is available since several
1338 years so chances are you even have a MIPS32 Release 2 processor
1339 in which case you should choose CPU_MIPS32_R2 instead for better
1342 config CPU_MIPS32_R2
1343 bool "MIPS32 Release 2"
1344 depends on SYS_HAS_CPU_MIPS32_R2
1345 select CPU_HAS_PREFETCH
1346 select CPU_SUPPORTS_32BIT_KERNEL
1347 select CPU_SUPPORTS_HIGHMEM
1348 select CPU_SUPPORTS_MSA
1351 Choose this option to build a kernel for release 2 or later of the
1352 MIPS32 architecture. Most modern embedded systems with a 32-bit
1353 MIPS processor are based on a MIPS32 processor. If you know the
1354 specific type of processor in your system, choose those that one
1355 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1357 config CPU_MIPS32_R6
1358 bool "MIPS32 Release 6 (EXPERIMENTAL)"
1359 depends on SYS_HAS_CPU_MIPS32_R6
1360 select CPU_HAS_PREFETCH
1361 select CPU_SUPPORTS_32BIT_KERNEL
1362 select CPU_SUPPORTS_HIGHMEM
1363 select CPU_SUPPORTS_MSA
1366 select MIPS_O32_FP64_SUPPORT
1368 Choose this option to build a kernel for release 6 or later of the
1369 MIPS32 architecture. New MIPS processors, starting with the Warrior
1370 family, are based on a MIPS32r6 processor. If you own an older
1371 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1373 config CPU_MIPS64_R1
1374 bool "MIPS64 Release 1"
1375 depends on SYS_HAS_CPU_MIPS64_R1
1376 select CPU_HAS_PREFETCH
1377 select CPU_SUPPORTS_32BIT_KERNEL
1378 select CPU_SUPPORTS_64BIT_KERNEL
1379 select CPU_SUPPORTS_HIGHMEM
1380 select CPU_SUPPORTS_HUGEPAGES
1382 Choose this option to build a kernel for release 1 or later of the
1383 MIPS64 architecture. Many modern embedded systems with a 64-bit
1384 MIPS processor are based on a MIPS64 processor. If you know the
1385 specific type of processor in your system, choose those that one
1386 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1387 Release 2 of the MIPS64 architecture is available since several
1388 years so chances are you even have a MIPS64 Release 2 processor
1389 in which case you should choose CPU_MIPS64_R2 instead for better
1392 config CPU_MIPS64_R2
1393 bool "MIPS64 Release 2"
1394 depends on SYS_HAS_CPU_MIPS64_R2
1395 select CPU_HAS_PREFETCH
1396 select CPU_SUPPORTS_32BIT_KERNEL
1397 select CPU_SUPPORTS_64BIT_KERNEL
1398 select CPU_SUPPORTS_HIGHMEM
1399 select CPU_SUPPORTS_HUGEPAGES
1400 select CPU_SUPPORTS_MSA
1402 Choose this option to build a kernel for release 2 or later of the
1403 MIPS64 architecture. Many modern embedded systems with a 64-bit
1404 MIPS processor are based on a MIPS64 processor. If you know the
1405 specific type of processor in your system, choose those that one
1406 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1408 config CPU_MIPS64_R6
1409 bool "MIPS64 Release 6 (EXPERIMENTAL)"
1410 depends on SYS_HAS_CPU_MIPS64_R6
1411 select CPU_HAS_PREFETCH
1412 select CPU_SUPPORTS_32BIT_KERNEL
1413 select CPU_SUPPORTS_64BIT_KERNEL
1414 select CPU_SUPPORTS_HIGHMEM
1415 select CPU_SUPPORTS_MSA
1418 Choose this option to build a kernel for release 6 or later of the
1419 MIPS64 architecture. New MIPS processors, starting with the Warrior
1420 family, are based on a MIPS64r6 processor. If you own an older
1421 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1425 depends on SYS_HAS_CPU_R3000
1427 select CPU_SUPPORTS_32BIT_KERNEL
1428 select CPU_SUPPORTS_HIGHMEM
1430 Please make sure to pick the right CPU type. Linux/MIPS is not
1431 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1432 *not* work on R4000 machines and vice versa. However, since most
1433 of the supported machines have an R4000 (or similar) CPU, R4x00
1434 might be a safe bet. If the resulting kernel does not work,
1435 try to recompile with R3000.
1439 depends on SYS_HAS_CPU_TX39XX
1440 select CPU_SUPPORTS_32BIT_KERNEL
1444 depends on SYS_HAS_CPU_VR41XX
1445 select CPU_SUPPORTS_32BIT_KERNEL
1446 select CPU_SUPPORTS_64BIT_KERNEL
1448 The options selects support for the NEC VR4100 series of processors.
1449 Only choose this option if you have one of these processors as a
1450 kernel built with this option will not run on any other type of
1451 processor or vice versa.
1455 depends on SYS_HAS_CPU_R4300
1456 select CPU_SUPPORTS_32BIT_KERNEL
1457 select CPU_SUPPORTS_64BIT_KERNEL
1459 MIPS Technologies R4300-series processors.
1463 depends on SYS_HAS_CPU_R4X00
1464 select CPU_SUPPORTS_32BIT_KERNEL
1465 select CPU_SUPPORTS_64BIT_KERNEL
1466 select CPU_SUPPORTS_HUGEPAGES
1468 MIPS Technologies R4000-series processors other than 4300, including
1469 the R4000, R4400, R4600, and 4700.
1473 depends on SYS_HAS_CPU_TX49XX
1474 select CPU_HAS_PREFETCH
1475 select CPU_SUPPORTS_32BIT_KERNEL
1476 select CPU_SUPPORTS_64BIT_KERNEL
1477 select CPU_SUPPORTS_HUGEPAGES
1481 depends on SYS_HAS_CPU_R5000
1482 select CPU_SUPPORTS_32BIT_KERNEL
1483 select CPU_SUPPORTS_64BIT_KERNEL
1484 select CPU_SUPPORTS_HUGEPAGES
1486 MIPS Technologies R5000-series processors other than the Nevada.
1490 depends on SYS_HAS_CPU_R5432
1491 select CPU_SUPPORTS_32BIT_KERNEL
1492 select CPU_SUPPORTS_64BIT_KERNEL
1493 select CPU_SUPPORTS_HUGEPAGES
1497 depends on SYS_HAS_CPU_R5500
1498 select CPU_SUPPORTS_32BIT_KERNEL
1499 select CPU_SUPPORTS_64BIT_KERNEL
1500 select CPU_SUPPORTS_HUGEPAGES
1502 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1507 depends on SYS_HAS_CPU_R6000
1508 select CPU_SUPPORTS_32BIT_KERNEL
1510 MIPS Technologies R6000 and R6000A series processors. Note these
1511 processors are extremely rare and the support for them is incomplete.
1515 depends on SYS_HAS_CPU_NEVADA
1516 select CPU_SUPPORTS_32BIT_KERNEL
1517 select CPU_SUPPORTS_64BIT_KERNEL
1518 select CPU_SUPPORTS_HUGEPAGES
1520 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1524 depends on SYS_HAS_CPU_R8000
1525 select CPU_HAS_PREFETCH
1526 select CPU_SUPPORTS_64BIT_KERNEL
1528 MIPS Technologies R8000 processors. Note these processors are
1529 uncommon and the support for them is incomplete.
1533 depends on SYS_HAS_CPU_R10000
1534 select CPU_HAS_PREFETCH
1535 select CPU_SUPPORTS_32BIT_KERNEL
1536 select CPU_SUPPORTS_64BIT_KERNEL
1537 select CPU_SUPPORTS_HIGHMEM
1538 select CPU_SUPPORTS_HUGEPAGES
1540 MIPS Technologies R10000-series processors.
1544 depends on SYS_HAS_CPU_RM7000
1545 select CPU_HAS_PREFETCH
1546 select CPU_SUPPORTS_32BIT_KERNEL
1547 select CPU_SUPPORTS_64BIT_KERNEL
1548 select CPU_SUPPORTS_HIGHMEM
1549 select CPU_SUPPORTS_HUGEPAGES
1553 depends on SYS_HAS_CPU_SB1
1554 select CPU_SUPPORTS_32BIT_KERNEL
1555 select CPU_SUPPORTS_64BIT_KERNEL
1556 select CPU_SUPPORTS_HIGHMEM
1557 select CPU_SUPPORTS_HUGEPAGES
1558 select WEAK_ORDERING
1560 config CPU_CAVIUM_OCTEON
1561 bool "Cavium Octeon processor"
1562 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1563 select CPU_HAS_PREFETCH
1564 select CPU_SUPPORTS_64BIT_KERNEL
1565 select WEAK_ORDERING
1566 select CPU_SUPPORTS_HIGHMEM
1567 select CPU_SUPPORTS_HUGEPAGES
1568 select USB_EHCI_BIG_ENDIAN_MMIO
1569 select MIPS_L1_CACHE_SHIFT_7
1571 The Cavium Octeon processor is a highly integrated chip containing
1572 many ethernet hardware widgets for networking tasks. The processor
1573 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1574 Full details can be found at http://www.caviumnetworks.com.
1577 bool "Broadcom BMIPS"
1578 depends on SYS_HAS_CPU_BMIPS
1580 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1581 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1582 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1583 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1584 select CPU_SUPPORTS_32BIT_KERNEL
1585 select DMA_NONCOHERENT
1587 select SWAP_IO_SPACE
1588 select WEAK_ORDERING
1589 select CPU_SUPPORTS_HIGHMEM
1590 select CPU_HAS_PREFETCH
1592 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1595 bool "Netlogic XLR SoC"
1596 depends on SYS_HAS_CPU_XLR
1597 select CPU_SUPPORTS_32BIT_KERNEL
1598 select CPU_SUPPORTS_64BIT_KERNEL
1599 select CPU_SUPPORTS_HIGHMEM
1600 select CPU_SUPPORTS_HUGEPAGES
1601 select WEAK_ORDERING
1602 select WEAK_REORDERING_BEYOND_LLSC
1604 Netlogic Microsystems XLR/XLS processors.
1607 bool "Netlogic XLP SoC"
1608 depends on SYS_HAS_CPU_XLP
1609 select CPU_SUPPORTS_32BIT_KERNEL
1610 select CPU_SUPPORTS_64BIT_KERNEL
1611 select CPU_SUPPORTS_HIGHMEM
1612 select WEAK_ORDERING
1613 select WEAK_REORDERING_BEYOND_LLSC
1614 select CPU_HAS_PREFETCH
1617 Netlogic Microsystems XLP processors.
1620 config CPU_MIPS32_3_5_FEATURES
1621 bool "MIPS32 Release 3.5 Features"
1622 depends on SYS_HAS_CPU_MIPS32_R3_5
1623 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1625 Choose this option to build a kernel for release 2 or later of the
1626 MIPS32 architecture including features from the 3.5 release such as
1627 support for Enhanced Virtual Addressing (EVA).
1629 config CPU_MIPS32_3_5_EVA
1630 bool "Enhanced Virtual Addressing (EVA)"
1631 depends on CPU_MIPS32_3_5_FEATURES
1635 Choose this option if you want to enable the Enhanced Virtual
1636 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1637 One of its primary benefits is an increase in the maximum size
1638 of lowmem (up to 3GB). If unsure, say 'N' here.
1641 config CPU_NOP_WORKAROUNDS
1644 config CPU_JUMP_WORKAROUNDS
1647 config CPU_LOONGSON2F_WORKAROUNDS
1648 bool "Loongson 2F Workarounds"
1650 select CPU_NOP_WORKAROUNDS
1651 select CPU_JUMP_WORKAROUNDS
1653 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1654 require workarounds. Without workarounds the system may hang
1655 unexpectedly. For more information please refer to the gas
1656 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1658 Loongson 2F03 and later have fixed these issues and no workarounds
1659 are needed. The workarounds have no significant side effect on them
1660 but may decrease the performance of the system so this option should
1661 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1664 If unsure, please say Y.
1665 endif # CPU_LOONGSON2F
1667 config SYS_SUPPORTS_ZBOOT
1669 select HAVE_KERNEL_GZIP
1670 select HAVE_KERNEL_BZIP2
1671 select HAVE_KERNEL_LZ4
1672 select HAVE_KERNEL_LZMA
1673 select HAVE_KERNEL_LZO
1674 select HAVE_KERNEL_XZ
1676 config SYS_SUPPORTS_ZBOOT_UART16550
1678 select SYS_SUPPORTS_ZBOOT
1680 config CPU_LOONGSON2
1682 select CPU_SUPPORTS_32BIT_KERNEL
1683 select CPU_SUPPORTS_64BIT_KERNEL
1684 select CPU_SUPPORTS_HIGHMEM
1685 select CPU_SUPPORTS_HUGEPAGES
1687 config CPU_LOONGSON1
1691 select CPU_HAS_PREFETCH
1692 select CPU_SUPPORTS_32BIT_KERNEL
1693 select CPU_SUPPORTS_HIGHMEM
1694 select CPU_SUPPORTS_CPUFREQ
1696 config CPU_BMIPS32_3300
1697 select SMP_UP if SMP
1700 config CPU_BMIPS4350
1702 select SYS_SUPPORTS_SMP
1703 select SYS_SUPPORTS_HOTPLUG_CPU
1705 config CPU_BMIPS4380
1707 select MIPS_L1_CACHE_SHIFT_6
1708 select SYS_SUPPORTS_SMP
1709 select SYS_SUPPORTS_HOTPLUG_CPU
1711 config CPU_BMIPS5000
1713 select MIPS_CPU_SCACHE
1714 select MIPS_L1_CACHE_SHIFT_7
1715 select SYS_SUPPORTS_SMP
1716 select SYS_SUPPORTS_HOTPLUG_CPU
1718 config SYS_HAS_CPU_LOONGSON3
1720 select CPU_SUPPORTS_CPUFREQ
1722 config SYS_HAS_CPU_LOONGSON2E
1725 config SYS_HAS_CPU_LOONGSON2F
1727 select CPU_SUPPORTS_CPUFREQ
1728 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1729 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1731 config SYS_HAS_CPU_LOONGSON1B
1734 config SYS_HAS_CPU_MIPS32_R1
1737 config SYS_HAS_CPU_MIPS32_R2
1740 config SYS_HAS_CPU_MIPS32_R3_5
1743 config SYS_HAS_CPU_MIPS32_R6
1746 config SYS_HAS_CPU_MIPS64_R1
1749 config SYS_HAS_CPU_MIPS64_R2
1752 config SYS_HAS_CPU_MIPS64_R6
1755 config SYS_HAS_CPU_R3000
1758 config SYS_HAS_CPU_TX39XX
1761 config SYS_HAS_CPU_VR41XX
1764 config SYS_HAS_CPU_R4300
1767 config SYS_HAS_CPU_R4X00
1770 config SYS_HAS_CPU_TX49XX
1773 config SYS_HAS_CPU_R5000
1776 config SYS_HAS_CPU_R5432
1779 config SYS_HAS_CPU_R5500
1782 config SYS_HAS_CPU_R6000
1785 config SYS_HAS_CPU_NEVADA
1788 config SYS_HAS_CPU_R8000
1791 config SYS_HAS_CPU_R10000
1794 config SYS_HAS_CPU_RM7000
1797 config SYS_HAS_CPU_SB1
1800 config SYS_HAS_CPU_CAVIUM_OCTEON
1803 config SYS_HAS_CPU_BMIPS
1806 config SYS_HAS_CPU_BMIPS32_3300
1808 select SYS_HAS_CPU_BMIPS
1810 config SYS_HAS_CPU_BMIPS4350
1812 select SYS_HAS_CPU_BMIPS
1814 config SYS_HAS_CPU_BMIPS4380
1816 select SYS_HAS_CPU_BMIPS
1818 config SYS_HAS_CPU_BMIPS5000
1820 select SYS_HAS_CPU_BMIPS
1822 config SYS_HAS_CPU_XLR
1825 config SYS_HAS_CPU_XLP
1828 config MIPS_MALTA_PM
1829 depends on MIPS_MALTA
1835 # CPU may reorder R->R, R->W, W->R, W->W
1836 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1838 config WEAK_ORDERING
1842 # CPU may reorder reads and writes beyond LL/SC
1843 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1845 config WEAK_REORDERING_BEYOND_LLSC
1850 # These two indicate any level of the MIPS32 and MIPS64 architecture
1854 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1858 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1861 # These two indicate the revision of the architecture, either Release 1 or Release 2
1865 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1869 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1874 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1880 config SYS_SUPPORTS_32BIT_KERNEL
1882 config SYS_SUPPORTS_64BIT_KERNEL
1884 config CPU_SUPPORTS_32BIT_KERNEL
1886 config CPU_SUPPORTS_64BIT_KERNEL
1888 config CPU_SUPPORTS_CPUFREQ
1890 config CPU_SUPPORTS_ADDRWINCFG
1892 config CPU_SUPPORTS_HUGEPAGES
1894 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1896 config MIPS_PGD_C0_CONTEXT
1898 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1901 # Set to y for ptrace access to watch registers.
1903 config HARDWARE_WATCHPOINTS
1905 default y if CPU_MIPSR1 || CPU_MIPSR2
1910 prompt "Kernel code model"
1912 You should only select this option if you have a workload that
1913 actually benefits from 64-bit processing or if your machine has
1914 large memory. You will only be presented a single option in this
1915 menu if your system does not support both 32-bit and 64-bit kernels.
1918 bool "32-bit kernel"
1919 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1922 Select this option if you want to build a 32-bit kernel.
1924 bool "64-bit kernel"
1925 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1927 Select this option if you want to build a 64-bit kernel.
1932 bool "KVM Guest Kernel"
1933 depends on BROKEN_ON_SMP
1935 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1937 config KVM_GUEST_TIMER_FREQ
1938 int "Count/Compare Timer Frequency (MHz)"
1939 depends on KVM_GUEST
1942 Set this to non-zero if building a guest kernel for KVM to skip RTC
1943 emulation when determining guest CPU Frequency. Instead, the guest's
1944 timer frequency is specified directly.
1947 prompt "Kernel page size"
1948 default PAGE_SIZE_4KB
1950 config PAGE_SIZE_4KB
1952 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
1954 This option select the standard 4kB Linux page size. On some
1955 R3000-family processors this is the only available page size. Using
1956 4kB page size will minimize memory consumption and is therefore
1957 recommended for low memory systems.
1959 config PAGE_SIZE_8KB
1961 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1963 Using 8kB page size will result in higher performance kernel at
1964 the price of higher memory consumption. This option is available
1965 only on R8000 and cnMIPS processors. Note that you will need a
1966 suitable Linux distribution to support this.
1968 config PAGE_SIZE_16KB
1970 depends on !CPU_R3000 && !CPU_TX39XX
1972 Using 16kB page size will result in higher performance kernel at
1973 the price of higher memory consumption. This option is available on
1974 all non-R3000 family processors. Note that you will need a suitable
1975 Linux distribution to support this.
1977 config PAGE_SIZE_32KB
1979 depends on CPU_CAVIUM_OCTEON
1981 Using 32kB page size will result in higher performance kernel at
1982 the price of higher memory consumption. This option is available
1983 only on cnMIPS cores. Note that you will need a suitable Linux
1984 distribution to support this.
1986 config PAGE_SIZE_64KB
1988 depends on !CPU_R3000 && !CPU_TX39XX
1990 Using 64kB page size will result in higher performance kernel at
1991 the price of higher memory consumption. This option is available on
1992 all non-R3000 family processor. Not that at the time of this
1993 writing this option is still high experimental.
1997 config FORCE_MAX_ZONEORDER
1998 int "Maximum zone order"
1999 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2000 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2001 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2002 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2003 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2004 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2008 The kernel memory allocator divides physically contiguous memory
2009 blocks into "zones", where each zone is a power of two number of
2010 pages. This option selects the largest power of two that the kernel
2011 keeps in the memory allocator. If you need to allocate very large
2012 blocks of physically contiguous memory, then you may need to
2013 increase this value.
2015 This config option is actually maximum order plus one. For example,
2016 a value of 11 means that the largest free memory block is 2^10 pages.
2018 The page size is not necessarily 4KB. Keep this in mind
2019 when choosing a value for this option.
2024 config IP22_CPU_SCACHE
2029 # Support for a MIPS32 / MIPS64 style S-caches
2031 config MIPS_CPU_SCACHE
2035 config R5000_CPU_SCACHE
2039 config RM7000_CPU_SCACHE
2043 config SIBYTE_DMA_PAGEOPS
2044 bool "Use DMA to clear/copy pages"
2047 Instead of using the CPU to zero and copy pages, use a Data Mover
2048 channel. These DMA channels are otherwise unused by the standard
2049 SiByte Linux port. Seems to give a small performance benefit.
2051 config CPU_HAS_PREFETCH
2054 config CPU_GENERIC_DUMP_TLB
2056 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2060 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2062 config CPU_R4K_CACHE_TLB
2064 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2067 bool "MIPS MT SMP support (1 TC on each available VPE)"
2068 depends on SYS_SUPPORTS_MULTITHREADING
2069 select CPU_MIPSR2_IRQ_VI
2070 select CPU_MIPSR2_IRQ_EI
2076 select SYS_SUPPORTS_SMP
2077 select SYS_SUPPORTS_SCHED_SMT
2078 select MIPS_PERF_SHARED_TC_COUNTERS
2080 This is a kernel model which is known as SMVP. This is supported
2081 on cores with the MT ASE and uses the available VPEs to implement
2082 virtual processors which supports SMP. This is equivalent to the
2083 Intel Hyperthreading feature. For further information go to
2084 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2090 bool "SMT (multithreading) scheduler support"
2091 depends on SYS_SUPPORTS_SCHED_SMT
2094 SMT scheduler support improves the CPU scheduler's decision making
2095 when dealing with MIPS MT enabled cores at a cost of slightly
2096 increased overhead in some places. If unsure say N here.
2098 config SYS_SUPPORTS_SCHED_SMT
2101 config SYS_SUPPORTS_MULTITHREADING
2104 config MIPS_MT_FPAFF
2105 bool "Dynamic FPU affinity for FP-intensive threads"
2107 depends on MIPS_MT_SMP
2109 config MIPSR2_TO_R6_EMULATOR
2110 bool "MIPS R2-to-R6 emulator"
2111 depends on CPU_MIPSR6 && !SMP
2114 Choose this option if you want to run non-R6 MIPS userland code.
2115 Even if you say 'Y' here, the emulator will still be disabled by
2116 default. You can enable it using the 'mipsr2emul' kernel option.
2117 The only reason this is a build-time option is to save ~14K from the
2119 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2120 depends on SMP && CPU_MIPSR6
2122 config MIPS_VPE_LOADER
2123 bool "VPE loader support."
2124 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2125 select CPU_MIPSR2_IRQ_VI
2126 select CPU_MIPSR2_IRQ_EI
2129 Includes a loader for loading an elf relocatable object
2130 onto another VPE and running it.
2132 config MIPS_VPE_LOADER_CMP
2135 depends on MIPS_VPE_LOADER && MIPS_CMP
2137 config MIPS_VPE_LOADER_MT
2140 depends on MIPS_VPE_LOADER && !MIPS_CMP
2142 config MIPS_VPE_LOADER_TOM
2143 bool "Load VPE program into memory hidden from linux"
2144 depends on MIPS_VPE_LOADER
2147 The loader can use memory that is present but has been hidden from
2148 Linux using the kernel command line option "mem=xxMB". It's up to
2149 you to ensure the amount you put in the option and the space your
2150 program requires is less or equal to the amount physically present.
2152 config MIPS_VPE_APSP_API
2153 bool "Enable support for AP/SP API (RTLX)"
2154 depends on MIPS_VPE_LOADER
2157 config MIPS_VPE_APSP_API_CMP
2160 depends on MIPS_VPE_APSP_API && MIPS_CMP
2162 config MIPS_VPE_APSP_API_MT
2165 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2168 bool "MIPS CMP framework support (DEPRECATED)"
2169 depends on SYS_SUPPORTS_MIPS_CMP
2173 select SYS_SUPPORTS_SMP
2174 select WEAK_ORDERING
2177 Select this if you are using a bootloader which implements the "CMP
2178 framework" protocol (ie. YAMON) and want your kernel to make use of
2179 its ability to start secondary CPUs.
2181 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2185 bool "MIPS Coherent Processing System support"
2186 depends on SYS_SUPPORTS_MIPS_CPS
2189 select MIPS_CPS_PM if HOTPLUG_CPU
2192 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2193 select SYS_SUPPORTS_HOTPLUG_CPU
2194 select SYS_SUPPORTS_SMP
2195 select WEAK_ORDERING
2197 Select this if you wish to run an SMP kernel across multiple cores
2198 within a MIPS Coherent Processing System. When this option is
2199 enabled the kernel will probe for other cores and boot them with
2200 no external assistance. It is safe to enable this when hardware
2201 support is unavailable.
2217 config SB1_PASS_1_WORKAROUNDS
2219 depends on CPU_SB1_PASS_1
2222 config SB1_PASS_2_WORKAROUNDS
2224 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2227 config SB1_PASS_2_1_WORKAROUNDS
2229 depends on CPU_SB1 && CPU_SB1_PASS_2
2233 config ARCH_PHYS_ADDR_T_64BIT
2237 prompt "SmartMIPS or microMIPS ASE support"
2239 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2242 Select this if you want neither microMIPS nor SmartMIPS support
2244 config CPU_HAS_SMARTMIPS
2245 depends on SYS_SUPPORTS_SMARTMIPS
2248 SmartMIPS is a extension of the MIPS32 architecture aimed at
2249 increased security at both hardware and software level for
2250 smartcards. Enabling this option will allow proper use of the
2251 SmartMIPS instructions by Linux applications. However a kernel with
2252 this option will not work on a MIPS core without SmartMIPS core. If
2253 you don't know you probably don't have SmartMIPS and should say N
2256 config CPU_MICROMIPS
2257 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2260 When this option is enabled the kernel will be built using the
2266 bool "Support for the MIPS SIMD Architecture (EXPERIMENTAL)"
2267 depends on CPU_SUPPORTS_MSA
2268 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2270 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2271 and a set of SIMD instructions to operate on them. When this option
2272 is enabled the kernel will support allocating & switching MSA
2273 vector register contexts. If you know that your kernel will only be
2274 running on CPUs which do not support MSA or that your userland will
2275 not be making use of it then you may wish to say N here to reduce
2276 the size & complexity of your kernel.
2287 # Vectored interrupt mode is an R2 feature
2289 config CPU_MIPSR2_IRQ_VI
2293 # Extended interrupt mode is an R2 feature
2295 config CPU_MIPSR2_IRQ_EI
2300 depends on !CPU_R3000
2306 config CPU_DADDI_WORKAROUNDS
2309 config CPU_R4000_WORKAROUNDS
2311 select CPU_R4400_WORKAROUNDS
2313 config CPU_R4400_WORKAROUNDS
2317 # - Highmem only makes sense for the 32-bit kernel.
2318 # - The current highmem code will only work properly on physically indexed
2319 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2320 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2321 # moment we protect the user and offer the highmem option only on machines
2322 # where it's known to be safe. This will not offer highmem on a few systems
2323 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2324 # indexed CPUs but we're playing safe.
2325 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2326 # know they might have memory configurations that could make use of highmem
2330 bool "High Memory Support"
2331 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2333 config CPU_SUPPORTS_HIGHMEM
2336 config SYS_SUPPORTS_HIGHMEM
2339 config SYS_SUPPORTS_SMARTMIPS
2342 config SYS_SUPPORTS_MICROMIPS
2345 config SYS_SUPPORTS_MIPS16
2348 This option must be set if a kernel might be executed on a MIPS16-
2349 enabled CPU even if MIPS16 is not actually being used. In other
2350 words, it makes the kernel MIPS16-tolerant.
2352 config CPU_SUPPORTS_MSA
2355 config ARCH_FLATMEM_ENABLE
2357 depends on !NUMA && !CPU_LOONGSON2
2359 config ARCH_DISCONTIGMEM_ENABLE
2361 default y if SGI_IP27
2363 Say Y to support efficient handling of discontiguous physical memory,
2364 for architectures which are either NUMA (Non-Uniform Memory Access)
2365 or have huge holes in the physical address space for other reasons.
2366 See <file:Documentation/vm/numa> for more.
2368 config ARCH_SPARSEMEM_ENABLE
2370 select SPARSEMEM_STATIC
2374 depends on SYS_SUPPORTS_NUMA
2376 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2377 Access). This option improves performance on systems with more
2378 than two nodes; on two node systems it is generally better to
2379 leave it disabled; on single node systems disable this option
2382 config SYS_SUPPORTS_NUMA
2388 depends on NEED_MULTIPLE_NODES
2390 config HW_PERF_EVENTS
2391 bool "Enable hardware performance counter support for perf events"
2392 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2395 Enable hardware performance counter support for perf events. If
2396 disabled, perf events will use software events only.
2401 bool "Multi-Processing support"
2402 depends on SYS_SUPPORTS_SMP
2404 This enables support for systems with more than one CPU. If you have
2405 a system with only one CPU, say N. If you have a system with more
2406 than one CPU, say Y.
2408 If you say N here, the kernel will run on uni- and multiprocessor
2409 machines, but will use only one CPU of a multiprocessor machine. If
2410 you say Y here, the kernel will run on many, but not all,
2411 uniprocessor machines. On a uniprocessor machine, the kernel
2412 will run faster if you say N here.
2414 People using multiprocessor machines who say Y here should also say
2415 Y to "Enhanced Real Time Clock Support", below.
2417 See also the SMP-HOWTO available at
2418 <http://www.tldp.org/docs.html#howto>.
2420 If you don't know what to do here, say N.
2425 config SYS_SUPPORTS_MIPS_CMP
2428 config SYS_SUPPORTS_MIPS_CPS
2431 config SYS_SUPPORTS_SMP
2434 config NR_CPUS_DEFAULT_4
2437 config NR_CPUS_DEFAULT_8
2440 config NR_CPUS_DEFAULT_16
2443 config NR_CPUS_DEFAULT_32
2446 config NR_CPUS_DEFAULT_64
2450 int "Maximum number of CPUs (2-256)"
2453 default "4" if NR_CPUS_DEFAULT_4
2454 default "8" if NR_CPUS_DEFAULT_8
2455 default "16" if NR_CPUS_DEFAULT_16
2456 default "32" if NR_CPUS_DEFAULT_32
2457 default "64" if NR_CPUS_DEFAULT_64
2459 This allows you to specify the maximum number of CPUs which this
2460 kernel will support. The maximum supported value is 32 for 32-bit
2461 kernel and 64 for 64-bit kernels; the minimum value which makes
2462 sense is 1 for Qemu (useful only for kernel debugging purposes)
2463 and 2 for all others.
2465 This is purely to save memory - each supported CPU adds
2466 approximately eight kilobytes to the kernel image. For best
2467 performance should round up your number of processors to the next
2470 config MIPS_PERF_SHARED_TC_COUNTERS
2474 # Timer Interrupt Frequency Configuration
2478 prompt "Timer frequency"
2481 Allows the configuration of the timer frequency.
2484 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2487 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2490 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2493 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2496 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2499 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2502 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2506 config SYS_SUPPORTS_48HZ
2509 config SYS_SUPPORTS_100HZ
2512 config SYS_SUPPORTS_128HZ
2515 config SYS_SUPPORTS_250HZ
2518 config SYS_SUPPORTS_256HZ
2521 config SYS_SUPPORTS_1000HZ
2524 config SYS_SUPPORTS_1024HZ
2527 config SYS_SUPPORTS_ARBIT_HZ
2529 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2530 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2531 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2532 !SYS_SUPPORTS_1024HZ
2537 default 100 if HZ_100
2538 default 128 if HZ_128
2539 default 250 if HZ_250
2540 default 256 if HZ_256
2541 default 1000 if HZ_1000
2542 default 1024 if HZ_1024
2545 def_bool HIGH_RES_TIMERS
2547 source "kernel/Kconfig.preempt"
2550 bool "Kexec system call"
2552 kexec is a system call that implements the ability to shutdown your
2553 current kernel, and to start another kernel. It is like a reboot
2554 but it is independent of the system firmware. And like a reboot
2555 you can start any kernel with it, not just Linux.
2557 The name comes from the similarity to the exec system call.
2559 It is an ongoing process to be certain the hardware in a machine
2560 is properly shutdown, so do not be surprised if this code does not
2561 initially work for you. As of this writing the exact hardware
2562 interface is strongly in flux, so no good recommendation can be
2566 bool "Kernel crash dumps"
2568 Generate crash dump after being started by kexec.
2569 This should be normally only set in special crash dump kernels
2570 which are loaded in the main kernel with kexec-tools into
2571 a specially reserved region and then later executed after
2572 a crash by kdump/kexec. The crash dump kernel must be compiled
2573 to a memory address not used by the main kernel or firmware using
2576 config PHYSICAL_START
2577 hex "Physical address where the kernel is loaded"
2578 default "0xffffffff84000000" if 64BIT
2579 default "0x84000000" if 32BIT
2580 depends on CRASH_DUMP
2582 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2583 If you plan to use kernel for capturing the crash dump change
2584 this value to start of the reserved region (the "X" value as
2585 specified in the "crashkernel=YM@XM" command line boot parameter
2586 passed to the panic-ed kernel).
2589 bool "Enable seccomp to safely compute untrusted bytecode"
2593 This kernel feature is useful for number crunching applications
2594 that may need to compute untrusted bytecode during their
2595 execution. By using pipes or other transports made available to
2596 the process as file descriptors supporting the read/write
2597 syscalls, it's possible to isolate those applications in
2598 their own address space using seccomp. Once seccomp is
2599 enabled via /proc/<pid>/seccomp, it cannot be disabled
2600 and the task is only allowed to execute a few safe syscalls
2601 defined by each seccomp mode.
2603 If unsure, say Y. Only embedded should say N here.
2605 config MIPS_O32_FP64_SUPPORT
2606 bool "Support for O32 binaries using 64-bit FP (EXPERIMENTAL)"
2607 depends on 32BIT || MIPS32_O32
2609 When this is enabled, the kernel will support use of 64-bit floating
2610 point registers with binaries using the O32 ABI along with the
2611 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2612 32-bit MIPS systems this support is at the cost of increasing the
2613 size and complexity of the compiled FPU emulator. Thus if you are
2614 running a MIPS32 system and know that none of your userland binaries
2615 will require 64-bit floating point, you may wish to reduce the size
2616 of your kernel & potentially improve FP emulation performance by
2619 Although binutils currently supports use of this flag the details
2620 concerning its effect upon the O32 ABI in userland are still being
2621 worked on. In order to avoid userland becoming dependant upon current
2622 behaviour before the details have been finalised, this option should
2623 be considered experimental and only enabled by those working upon
2631 select OF_EARLY_FLATTREE
2639 config LOCKDEP_SUPPORT
2643 config STACKTRACE_SUPPORT
2647 source "init/Kconfig"
2649 source "kernel/Kconfig.freezer"
2651 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2659 bool "Support for PCI controller"
2660 depends on HW_HAS_PCI
2662 select NO_GENERIC_PCI_IOPORT_MAP
2664 Find out whether you have a PCI motherboard. PCI is the name of a
2665 bus system, i.e. the way the CPU talks to the other stuff inside
2666 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2670 bool "Support for HT-linked PCI"
2672 depends on CPU_LOONGSON3
2676 Loongson family machines use Hyper-Transport bus for inter-core
2677 connection and device connection. The PCI bus is a subordinate
2678 linked at HT. Choose Y for Loongson-3 based machines.
2683 source "drivers/pci/Kconfig"
2685 source "drivers/pci/pcie/Kconfig"
2688 # ISA support is now enabled via select. Too many systems still have the one
2689 # or other ISA chip on the board that users don't know about so don't expect
2690 # users to choose the right thing ...
2697 depends on HW_HAS_EISA
2699 select GENERIC_ISA_DMA
2701 The Extended Industry Standard Architecture (EISA) bus was
2702 developed as an open alternative to the IBM MicroChannel bus.
2704 The EISA bus provided some of the features of the IBM MicroChannel
2705 bus while maintaining backward compatibility with cards made for
2706 the older ISA bus. The EISA bus saw limited use between 1988 and
2707 1995 when it was made obsolete by the PCI bus.
2709 Say Y here if you are building a kernel for an EISA-based machine.
2713 source "drivers/eisa/Kconfig"
2716 bool "TURBOchannel support"
2717 depends on MACH_DECSTATION
2719 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2720 processors. TURBOchannel programming specifications are available
2722 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2724 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2725 Linux driver support status is documented at:
2726 <http://www.linux-mips.org/wiki/DECstation>
2736 select MIPS_EXTERNAL_TIMER
2744 source "drivers/pcmcia/Kconfig"
2746 source "drivers/pci/hotplug/Kconfig"
2749 tristate "RapidIO support"
2753 If you say Y here, the kernel will include drivers and
2754 infrastructure code to support RapidIO interconnect devices.
2756 source "drivers/rapidio/Kconfig"
2760 menu "Executable file formats"
2762 source "fs/Kconfig.binfmt"
2767 config MIPS32_COMPAT
2773 config SYSVIPC_COMPAT
2777 bool "Kernel support for o32 binaries"
2779 select ARCH_WANT_OLD_COMPAT_IPC
2781 select MIPS32_COMPAT
2782 select SYSVIPC_COMPAT if SYSVIPC
2784 Select this option if you want to run o32 binaries. These are pure
2785 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2786 existing binaries are in this format.
2791 bool "Kernel support for n32 binaries"
2794 select MIPS32_COMPAT
2795 select SYSVIPC_COMPAT if SYSVIPC
2797 Select this option if you want to run n32 binaries. These are
2798 64-bit binaries using 32-bit quantities for addressing and certain
2799 data that would normally be 64-bit. They are used in special
2806 default y if MIPS32_O32 || MIPS32_N32
2810 menu "Power management options"
2812 config ARCH_HIBERNATION_POSSIBLE
2814 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2816 config ARCH_SUSPEND_POSSIBLE
2818 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2820 source "kernel/power/Kconfig"
2824 config MIPS_EXTERNAL_TIMER
2827 menu "CPU Power Management"
2829 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2830 source "drivers/cpufreq/Kconfig"
2833 source "drivers/cpuidle/Kconfig"
2837 source "net/Kconfig"
2839 source "drivers/Kconfig"
2841 source "drivers/firmware/Kconfig"
2845 source "arch/mips/Kconfig.debug"
2847 source "security/Kconfig"
2849 source "crypto/Kconfig"
2851 source "lib/Kconfig"
2853 source "arch/mips/kvm/Kconfig"