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_CMOS_UPDATE
47 select HAVE_MOD_ARCH_SPECIFIC
49 select MODULES_USE_ELF_REL if MODULES
50 select MODULES_USE_ELF_RELA if MODULES && 64BIT
51 select CLONE_BACKWARDS
52 select HAVE_DEBUG_STACKOVERFLOW
53 select HAVE_CC_STACKPROTECTOR
54 select CPU_PM if CPU_IDLE
55 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
56 select ARCH_BINFMT_ELF_STATE
57 select SYSCTL_EXCEPTION_TRACE
59 menu "Machine selection"
66 bool "Alchemy processor based machines"
67 select ARCH_PHYS_ADDR_T_64BIT
71 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
72 select SYS_HAS_CPU_MIPS32_R1
73 select SYS_SUPPORTS_32BIT_KERNEL
74 select SYS_SUPPORTS_APM_EMULATION
75 select ARCH_REQUIRE_GPIOLIB
76 select SYS_SUPPORTS_ZBOOT
80 bool "Texas Instruments AR7"
82 select DMA_NONCOHERENT
88 select SYS_HAS_CPU_MIPS32_R1
89 select SYS_HAS_EARLY_PRINTK
90 select SYS_SUPPORTS_32BIT_KERNEL
91 select SYS_SUPPORTS_LITTLE_ENDIAN
92 select SYS_SUPPORTS_MIPS16
93 select SYS_SUPPORTS_ZBOOT_UART16550
94 select ARCH_REQUIRE_GPIOLIB
98 Support for the Texas Instruments AR7 System-on-a-Chip
99 family: TNETD7100, 7200 and 7300.
102 bool "Atheros AR231x/AR531x SoC support"
105 select DMA_NONCOHERENT
108 select SYS_HAS_CPU_MIPS32_R1
109 select SYS_SUPPORTS_BIG_ENDIAN
110 select SYS_SUPPORTS_32BIT_KERNEL
111 select SYS_HAS_EARLY_PRINTK
113 Support for Atheros AR231x and Atheros AR531x based boards
116 bool "Atheros AR71XX/AR724X/AR913X based boards"
117 select ARCH_REQUIRE_GPIOLIB
121 select DMA_NONCOHERENT
126 select SYS_HAS_CPU_MIPS32_R2
127 select SYS_HAS_EARLY_PRINTK
128 select SYS_SUPPORTS_32BIT_KERNEL
129 select SYS_SUPPORTS_BIG_ENDIAN
130 select SYS_SUPPORTS_MIPS16
132 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
135 bool "Broadcom BCM3384 based boards"
137 select NO_EXCEPT_FILL
143 select DMA_NONCOHERENT
145 select SYS_SUPPORTS_32BIT_KERNEL
146 select SYS_SUPPORTS_BIG_ENDIAN
147 select SYS_SUPPORTS_HIGHMEM
148 select SYS_HAS_CPU_BMIPS5000
150 select USB_EHCI_BIG_ENDIAN_DESC
151 select USB_EHCI_BIG_ENDIAN_MMIO
152 select USB_OHCI_BIG_ENDIAN_DESC
153 select USB_OHCI_BIG_ENDIAN_MMIO
155 Support for BCM3384 based boards. BCM3384/BCM33843 is a cable modem
156 chipset with a Linux application processor that is often used to
157 provide Samba services, a CUPS print server, and/or advanced routing
161 bool "Broadcom BCM47XX based boards"
162 select ARCH_WANT_OPTIONAL_GPIOLIB
166 select DMA_NONCOHERENT
169 select SYS_HAS_CPU_MIPS32_R1
170 select NO_EXCEPT_FILL
171 select SYS_SUPPORTS_32BIT_KERNEL
172 select SYS_SUPPORTS_LITTLE_ENDIAN
173 select SYS_SUPPORTS_MIPS16
174 select SYS_HAS_EARLY_PRINTK
175 select USE_GENERIC_EARLY_PRINTK_8250
177 select LEDS_GPIO_REGISTER
179 Support for BCM47XX based boards
182 bool "Broadcom BCM63XX based boards"
187 select DMA_NONCOHERENT
189 select SYS_SUPPORTS_32BIT_KERNEL
190 select SYS_SUPPORTS_BIG_ENDIAN
191 select SYS_HAS_EARLY_PRINTK
193 select ARCH_REQUIRE_GPIOLIB
195 select MIPS_L1_CACHE_SHIFT_4
197 Support for BCM63XX based boards
204 select DMA_NONCOHERENT
210 select PCI_GT64XXX_PCI0
212 select SYS_HAS_CPU_NEVADA
213 select SYS_HAS_EARLY_PRINTK
214 select SYS_SUPPORTS_32BIT_KERNEL
215 select SYS_SUPPORTS_64BIT_KERNEL
216 select SYS_SUPPORTS_LITTLE_ENDIAN
217 select USE_GENERIC_EARLY_PRINTK_8250
219 config MACH_DECSTATION
223 select CEVT_R4K if CPU_R4X00
225 select CSRC_R4K if CPU_R4X00
226 select CPU_DADDI_WORKAROUNDS if 64BIT
227 select CPU_R4000_WORKAROUNDS if 64BIT
228 select CPU_R4400_WORKAROUNDS if 64BIT
229 select DMA_NONCOHERENT
232 select SYS_HAS_CPU_R3000
233 select SYS_HAS_CPU_R4X00
234 select SYS_SUPPORTS_32BIT_KERNEL
235 select SYS_SUPPORTS_64BIT_KERNEL
236 select SYS_SUPPORTS_LITTLE_ENDIAN
237 select SYS_SUPPORTS_128HZ
238 select SYS_SUPPORTS_256HZ
239 select SYS_SUPPORTS_1024HZ
240 select MIPS_L1_CACHE_SHIFT_4
242 This enables support for DEC's MIPS based workstations. For details
243 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
244 DECstation porting pages on <http://decstation.unix-ag.org/>.
246 If you have one of the following DECstation Models you definitely
247 want to choose R4xx0 for the CPU Type:
254 otherwise choose R3000.
257 bool "Jazz family of machines"
260 select ARCH_MAY_HAVE_PC_FDC
263 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
264 select GENERIC_ISA_DMA
265 select HAVE_PCSPKR_PLATFORM
270 select SYS_HAS_CPU_R4X00
271 select SYS_SUPPORTS_32BIT_KERNEL
272 select SYS_SUPPORTS_64BIT_KERNEL
273 select SYS_SUPPORTS_100HZ
275 This a family of machines based on the MIPS R4030 chipset which was
276 used by several vendors to build RISC/os and Windows NT workstations.
277 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
278 Olivetti M700-10 workstations.
281 bool "Ingenic JZ4740 based machines"
282 select SYS_HAS_CPU_MIPS32_R1
283 select SYS_SUPPORTS_32BIT_KERNEL
284 select SYS_SUPPORTS_LITTLE_ENDIAN
285 select SYS_SUPPORTS_ZBOOT_UART16550
286 select DMA_NONCOHERENT
288 select ARCH_REQUIRE_GPIOLIB
289 select SYS_HAS_EARLY_PRINTK
291 select GENERIC_IRQ_CHIP
294 bool "Lantiq based platforms"
295 select DMA_NONCOHERENT
299 select SYS_HAS_CPU_MIPS32_R1
300 select SYS_HAS_CPU_MIPS32_R2
301 select SYS_SUPPORTS_BIG_ENDIAN
302 select SYS_SUPPORTS_32BIT_KERNEL
303 select SYS_SUPPORTS_MIPS16
304 select SYS_SUPPORTS_MULTITHREADING
305 select SYS_HAS_EARLY_PRINTK
306 select ARCH_REQUIRE_GPIOLIB
309 select HAVE_MACH_CLKDEV
313 select PINCTRL_LANTIQ
314 select ARCH_HAS_RESET_CONTROLLER
315 select RESET_CONTROLLER
318 bool "LASAT Networks platforms"
322 select DMA_NONCOHERENT
323 select SYS_HAS_EARLY_PRINTK
326 select PCI_GT64XXX_PCI0
328 select R5000_CPU_SCACHE
329 select SYS_HAS_CPU_R5000
330 select SYS_SUPPORTS_32BIT_KERNEL
331 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
332 select SYS_SUPPORTS_LITTLE_ENDIAN
335 bool "Loongson family of machines"
336 select SYS_SUPPORTS_ZBOOT
338 This enables the support of Loongson family of machines.
340 Loongson is a family of general-purpose MIPS-compatible CPUs.
341 developed at Institute of Computing Technology (ICT),
342 Chinese Academy of Sciences (CAS) in the People's Republic
343 of China. The chief architect is Professor Weiwu Hu.
345 config MACH_LOONGSON1
346 bool "Loongson 1 family of machines"
347 select SYS_SUPPORTS_ZBOOT
349 This enables support for the Loongson 1 based machines.
351 Loongson 1 is a family of 32-bit MIPS-compatible SoCs developed by
352 the ICT (Institute of Computing Technology) and the Chinese Academy
355 config MACH_PISTACHIO
356 bool "IMG Pistachio SoC based boards"
357 select ARCH_REQUIRE_GPIOLIB
361 select CLKSRC_MIPS_GIC
364 select DMA_MAYBE_COHERENT
368 select MIPS_CPU_SCACHE
372 select SYS_HAS_CPU_MIPS32_R2
373 select SYS_SUPPORTS_32BIT_KERNEL
374 select SYS_SUPPORTS_LITTLE_ENDIAN
375 select SYS_SUPPORTS_MIPS_CPS
376 select SYS_SUPPORTS_MULTITHREADING
377 select SYS_SUPPORTS_ZBOOT
380 This enables support for the IMG Pistachio SoC platform.
383 bool "MIPS Malta board"
384 select ARCH_MAY_HAVE_PC_FDC
389 select CLKSRC_MIPS_GIC
390 select DMA_MAYBE_COHERENT
391 select GENERIC_ISA_DMA
392 select HAVE_PCSPKR_PLATFORM
399 select MIPS_CPU_SCACHE
400 select MIPS_L1_CACHE_SHIFT_6
401 select PCI_GT64XXX_PCI0
404 select SYS_HAS_CPU_MIPS32_R1
405 select SYS_HAS_CPU_MIPS32_R2
406 select SYS_HAS_CPU_MIPS32_R3_5
407 select SYS_HAS_CPU_MIPS32_R6
408 select SYS_HAS_CPU_MIPS64_R1
409 select SYS_HAS_CPU_MIPS64_R2
410 select SYS_HAS_CPU_MIPS64_R6
411 select SYS_HAS_CPU_NEVADA
412 select SYS_HAS_CPU_RM7000
413 select SYS_SUPPORTS_32BIT_KERNEL
414 select SYS_SUPPORTS_64BIT_KERNEL
415 select SYS_SUPPORTS_BIG_ENDIAN
416 select SYS_SUPPORTS_LITTLE_ENDIAN
417 select SYS_SUPPORTS_MICROMIPS
418 select SYS_SUPPORTS_MIPS_CMP
419 select SYS_SUPPORTS_MIPS_CPS
420 select SYS_SUPPORTS_MIPS16
421 select SYS_SUPPORTS_MULTITHREADING
422 select SYS_SUPPORTS_SMARTMIPS
423 select SYS_SUPPORTS_ZBOOT
425 This enables support for the MIPS Technologies Malta evaluation
429 bool "MIPS SEAD3 board"
435 select CLKSRC_MIPS_GIC
436 select CPU_MIPSR2_IRQ_VI
437 select CPU_MIPSR2_IRQ_EI
438 select DMA_NONCOHERENT
443 select SYS_HAS_CPU_MIPS32_R1
444 select SYS_HAS_CPU_MIPS32_R2
445 select SYS_HAS_CPU_MIPS64_R1
446 select SYS_HAS_EARLY_PRINTK
447 select SYS_SUPPORTS_32BIT_KERNEL
448 select SYS_SUPPORTS_64BIT_KERNEL
449 select SYS_SUPPORTS_BIG_ENDIAN
450 select SYS_SUPPORTS_LITTLE_ENDIAN
451 select SYS_SUPPORTS_SMARTMIPS
452 select SYS_SUPPORTS_MICROMIPS
453 select SYS_SUPPORTS_MIPS16
454 select USB_EHCI_BIG_ENDIAN_DESC
455 select USB_EHCI_BIG_ENDIAN_MMIO
458 This enables support for the MIPS Technologies SEAD3 evaluation
462 bool "NEC EMMA2RH Mark-eins board"
466 This enables support for the NEC Electronics Mark-eins boards.
469 bool "NEC VR4100 series based machines"
472 select SYS_HAS_CPU_VR41XX
473 select SYS_SUPPORTS_MIPS16
474 select ARCH_REQUIRE_GPIOLIB
477 bool "NXP STB220 board"
480 Support for NXP Semiconductors STB220 Development Board.
487 Support for NXP Semiconductors STB225 Development Board.
490 bool "PMC-Sierra MSP chipsets"
493 select DMA_NONCOHERENT
495 select NO_EXCEPT_FILL
497 select SYS_HAS_CPU_MIPS32_R1
498 select SYS_HAS_CPU_MIPS32_R2
499 select SYS_SUPPORTS_32BIT_KERNEL
500 select SYS_SUPPORTS_BIG_ENDIAN
501 select SYS_SUPPORTS_MIPS16
504 select SERIAL_8250_CONSOLE
505 select USB_EHCI_BIG_ENDIAN_MMIO
506 select USB_EHCI_BIG_ENDIAN_DESC
508 This adds support for the PMC-Sierra family of Multi-Service
509 Processor System-On-A-Chips. These parts include a number
510 of integrated peripherals, interfaces and DSPs in addition to
511 a variety of MIPS cores.
514 bool "Ralink based machines"
518 select DMA_NONCOHERENT
521 select SYS_HAS_CPU_MIPS32_R1
522 select SYS_HAS_CPU_MIPS32_R2
523 select SYS_SUPPORTS_32BIT_KERNEL
524 select SYS_SUPPORTS_LITTLE_ENDIAN
525 select SYS_SUPPORTS_MIPS16
526 select SYS_HAS_EARLY_PRINTK
527 select HAVE_MACH_CLKDEV
529 select ARCH_HAS_RESET_CONTROLLER
530 select RESET_CONTROLLER
533 bool "SGI IP22 (Indy/Indigo2)"
539 select DEFAULT_SGI_PARTITION
540 select DMA_NONCOHERENT
544 select IP22_CPU_SCACHE
546 select GENERIC_ISA_DMA_SUPPORT_BROKEN
548 select SGI_HAS_INDYDOG
554 select SYS_HAS_CPU_R4X00
555 select SYS_HAS_CPU_R5000
557 # Disable EARLY_PRINTK for now since it leads to overwritten prom
558 # memory during early boot on some machines.
560 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
561 # for a more details discussion
563 # select SYS_HAS_EARLY_PRINTK
564 select SYS_SUPPORTS_32BIT_KERNEL
565 select SYS_SUPPORTS_64BIT_KERNEL
566 select SYS_SUPPORTS_BIG_ENDIAN
567 select MIPS_L1_CACHE_SHIFT_7
569 This are the SGI Indy, Challenge S and Indigo2, as well as certain
570 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
571 that runs on these, say Y here.
574 bool "SGI IP27 (Origin200/2000)"
578 select DEFAULT_SGI_PARTITION
580 select SYS_HAS_EARLY_PRINTK
582 select NR_CPUS_DEFAULT_64
583 select SYS_HAS_CPU_R10000
584 select SYS_SUPPORTS_64BIT_KERNEL
585 select SYS_SUPPORTS_BIG_ENDIAN
586 select SYS_SUPPORTS_NUMA
587 select SYS_SUPPORTS_SMP
588 select MIPS_L1_CACHE_SHIFT_7
590 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
591 workstations. To compile a Linux kernel that runs on these, say Y
595 bool "SGI IP28 (Indigo2 R10k)"
601 select DEFAULT_SGI_PARTITION
602 select DMA_NONCOHERENT
603 select GENERIC_ISA_DMA_SUPPORT_BROKEN
609 select SGI_HAS_INDYDOG
615 select SYS_HAS_CPU_R10000
617 # Disable EARLY_PRINTK for now since it leads to overwritten prom
618 # memory during early boot on some machines.
620 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
621 # for a more details discussion
623 # select SYS_HAS_EARLY_PRINTK
624 select SYS_SUPPORTS_64BIT_KERNEL
625 select SYS_SUPPORTS_BIG_ENDIAN
626 select MIPS_L1_CACHE_SHIFT_7
628 This is the SGI Indigo2 with R10000 processor. To compile a Linux
629 kernel that runs on these, say Y here.
638 select DMA_NONCOHERENT
641 select R5000_CPU_SCACHE
642 select RM7000_CPU_SCACHE
643 select SYS_HAS_CPU_R5000
644 select SYS_HAS_CPU_R10000 if BROKEN
645 select SYS_HAS_CPU_RM7000
646 select SYS_HAS_CPU_NEVADA
647 select SYS_SUPPORTS_64BIT_KERNEL
648 select SYS_SUPPORTS_BIG_ENDIAN
650 If you want this kernel to run on SGI O2 workstation, say Y here.
653 bool "Sibyte BCM91120C-CRhine"
656 select SIBYTE_BCM1120
658 select SYS_HAS_CPU_SB1
659 select SYS_SUPPORTS_BIG_ENDIAN
660 select SYS_SUPPORTS_LITTLE_ENDIAN
663 bool "Sibyte BCM91120x-Carmel"
666 select SIBYTE_BCM1120
668 select SYS_HAS_CPU_SB1
669 select SYS_SUPPORTS_BIG_ENDIAN
670 select SYS_SUPPORTS_LITTLE_ENDIAN
673 bool "Sibyte BCM91125C-CRhone"
676 select SIBYTE_BCM1125
678 select SYS_HAS_CPU_SB1
679 select SYS_SUPPORTS_BIG_ENDIAN
680 select SYS_SUPPORTS_HIGHMEM
681 select SYS_SUPPORTS_LITTLE_ENDIAN
684 bool "Sibyte BCM91125E-Rhone"
687 select SIBYTE_BCM1125H
689 select SYS_HAS_CPU_SB1
690 select SYS_SUPPORTS_BIG_ENDIAN
691 select SYS_SUPPORTS_LITTLE_ENDIAN
694 bool "Sibyte BCM91250A-SWARM"
697 select HAVE_PATA_PLATFORM
700 select SYS_HAS_CPU_SB1
701 select SYS_SUPPORTS_BIG_ENDIAN
702 select SYS_SUPPORTS_HIGHMEM
703 select SYS_SUPPORTS_LITTLE_ENDIAN
704 select ZONE_DMA32 if 64BIT
706 config SIBYTE_LITTLESUR
707 bool "Sibyte BCM91250C2-LittleSur"
710 select HAVE_PATA_PLATFORM
713 select SYS_HAS_CPU_SB1
714 select SYS_SUPPORTS_BIG_ENDIAN
715 select SYS_SUPPORTS_HIGHMEM
716 select SYS_SUPPORTS_LITTLE_ENDIAN
718 config SIBYTE_SENTOSA
719 bool "Sibyte BCM91250E-Sentosa"
724 select SYS_HAS_CPU_SB1
725 select SYS_SUPPORTS_BIG_ENDIAN
726 select SYS_SUPPORTS_LITTLE_ENDIAN
729 bool "Sibyte BCM91480B-BigSur"
732 select NR_CPUS_DEFAULT_4
733 select SIBYTE_BCM1x80
735 select SYS_HAS_CPU_SB1
736 select SYS_SUPPORTS_BIG_ENDIAN
737 select SYS_SUPPORTS_HIGHMEM
738 select SYS_SUPPORTS_LITTLE_ENDIAN
739 select ZONE_DMA32 if 64BIT
742 bool "SNI RM200/300/400"
743 select FW_ARC if CPU_LITTLE_ENDIAN
744 select FW_ARC32 if CPU_LITTLE_ENDIAN
745 select FW_SNIPROM if CPU_BIG_ENDIAN
746 select ARCH_MAY_HAVE_PC_FDC
750 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
751 select DMA_NONCOHERENT
752 select GENERIC_ISA_DMA
753 select HAVE_PCSPKR_PLATFORM
760 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
761 select SYS_HAS_CPU_R4X00
762 select SYS_HAS_CPU_R5000
763 select SYS_HAS_CPU_R10000
764 select R5000_CPU_SCACHE
765 select SYS_HAS_EARLY_PRINTK
766 select SYS_SUPPORTS_32BIT_KERNEL
767 select SYS_SUPPORTS_64BIT_KERNEL
768 select SYS_SUPPORTS_BIG_ENDIAN
769 select SYS_SUPPORTS_HIGHMEM
770 select SYS_SUPPORTS_LITTLE_ENDIAN
772 The SNI RM200/300/400 are MIPS-based machines manufactured by
773 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
774 Technology and now in turn merged with Fujitsu. Say Y here to
775 support this machine type.
778 bool "Toshiba TX39 series based machines"
781 bool "Toshiba TX49 series based machines"
783 config MIKROTIK_RB532
784 bool "Mikrotik RB532 boards"
787 select DMA_NONCOHERENT
790 select SYS_HAS_CPU_MIPS32_R1
791 select SYS_SUPPORTS_32BIT_KERNEL
792 select SYS_SUPPORTS_LITTLE_ENDIAN
795 select ARCH_REQUIRE_GPIOLIB
796 select MIPS_L1_CACHE_SHIFT_4
798 Support the Mikrotik(tm) RouterBoard 532 series,
799 based on the IDT RC32434 SoC.
801 config CAVIUM_OCTEON_SOC
802 bool "Cavium Networks Octeon SoC based boards"
804 select ARCH_PHYS_ADDR_T_64BIT
806 select SYS_SUPPORTS_64BIT_KERNEL
807 select SYS_SUPPORTS_BIG_ENDIAN
809 select SYS_SUPPORTS_LITTLE_ENDIAN
810 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
811 select SYS_HAS_EARLY_PRINTK
812 select SYS_HAS_CPU_CAVIUM_OCTEON
817 select ARCH_REQUIRE_GPIOLIB
820 select ARCH_SPARSEMEM_ENABLE
821 select SYS_SUPPORTS_SMP
822 select NR_CPUS_DEFAULT_16
825 This option supports all of the Octeon reference boards from Cavium
826 Networks. It builds a kernel that dynamically determines the Octeon
827 CPU type and supports all known board reference implementations.
828 Some of the supported boards are:
835 Say Y here for most Octeon reference boards.
838 bool "Netlogic XLR/XLS based systems"
841 select SYS_HAS_CPU_XLR
842 select SYS_SUPPORTS_SMP
845 select SYS_SUPPORTS_32BIT_KERNEL
846 select SYS_SUPPORTS_64BIT_KERNEL
847 select ARCH_PHYS_ADDR_T_64BIT
848 select SYS_SUPPORTS_BIG_ENDIAN
849 select SYS_SUPPORTS_HIGHMEM
851 select NR_CPUS_DEFAULT_32
855 select ZONE_DMA32 if 64BIT
857 select SYS_HAS_EARLY_PRINTK
858 select SYS_SUPPORTS_ZBOOT
859 select SYS_SUPPORTS_ZBOOT_UART16550
861 Support for systems based on Netlogic XLR and XLS processors.
862 Say Y here if you have a XLR or XLS based board.
865 bool "Netlogic XLP based systems"
868 select SYS_HAS_CPU_XLP
869 select SYS_SUPPORTS_SMP
871 select SYS_SUPPORTS_32BIT_KERNEL
872 select SYS_SUPPORTS_64BIT_KERNEL
873 select ARCH_PHYS_ADDR_T_64BIT
874 select SYS_SUPPORTS_BIG_ENDIAN
875 select SYS_SUPPORTS_LITTLE_ENDIAN
876 select SYS_SUPPORTS_HIGHMEM
878 select NR_CPUS_DEFAULT_32
882 select ZONE_DMA32 if 64BIT
884 select SYS_HAS_EARLY_PRINTK
886 select SYS_SUPPORTS_ZBOOT
887 select SYS_SUPPORTS_ZBOOT_UART16550
889 This board is based on Netlogic XLP Processor.
890 Say Y here if you have a XLP based board.
893 bool "Para-Virtualized guest system"
897 select SYS_SUPPORTS_64BIT_KERNEL
898 select SYS_SUPPORTS_32BIT_KERNEL
899 select SYS_SUPPORTS_BIG_ENDIAN
900 select SYS_SUPPORTS_SMP
901 select NR_CPUS_DEFAULT_4
902 select SYS_HAS_EARLY_PRINTK
903 select SYS_HAS_CPU_MIPS32_R2
904 select SYS_HAS_CPU_MIPS64_R2
905 select SYS_HAS_CPU_CAVIUM_OCTEON
909 This option supports guest running under ????
913 source "arch/mips/alchemy/Kconfig"
914 source "arch/mips/ath25/Kconfig"
915 source "arch/mips/ath79/Kconfig"
916 source "arch/mips/bcm47xx/Kconfig"
917 source "arch/mips/bcm63xx/Kconfig"
918 source "arch/mips/jazz/Kconfig"
919 source "arch/mips/jz4740/Kconfig"
920 source "arch/mips/lantiq/Kconfig"
921 source "arch/mips/lasat/Kconfig"
922 source "arch/mips/pmcs-msp71xx/Kconfig"
923 source "arch/mips/ralink/Kconfig"
924 source "arch/mips/sgi-ip27/Kconfig"
925 source "arch/mips/sibyte/Kconfig"
926 source "arch/mips/txx9/Kconfig"
927 source "arch/mips/vr41xx/Kconfig"
928 source "arch/mips/cavium-octeon/Kconfig"
929 source "arch/mips/loongson/Kconfig"
930 source "arch/mips/loongson1/Kconfig"
931 source "arch/mips/netlogic/Kconfig"
932 source "arch/mips/paravirt/Kconfig"
936 config RWSEM_GENERIC_SPINLOCK
940 config RWSEM_XCHGADD_ALGORITHM
943 config ARCH_HAS_ILOG2_U32
947 config ARCH_HAS_ILOG2_U64
951 config GENERIC_HWEIGHT
955 config GENERIC_CALIBRATE_DELAY
959 config SCHED_OMIT_FRAME_POINTER
964 # Select some configuration options automatically based on user selections.
969 config ARCH_MAY_HAVE_PC_FDC
1006 select ARCH_REQUIRE_GPIOLIB
1012 config ARCH_DMA_ADDR_T_64BIT
1013 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1015 config DMA_MAYBE_COHERENT
1016 select DMA_NONCOHERENT
1022 config DMA_NONCOHERENT
1024 select NEED_DMA_MAP_STATE
1026 config NEED_DMA_MAP_STATE
1029 config SYS_HAS_EARLY_PRINTK
1033 bool "Support for hot-pluggable CPUs"
1034 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
1036 Say Y here to allow turning CPUs off and on. CPUs can be
1037 controlled through /sys/devices/system/cpu.
1038 (Note: power management support will enable this option
1039 automatically on SMP systems. )
1040 Say N if you want to disable CPU hotplug.
1042 config SYS_SUPPORTS_HOTPLUG_CPU
1049 config MIPS_BONITO64
1064 config NO_IOPORT_MAP
1070 config GENERIC_ISA_DMA
1072 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1075 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1077 select GENERIC_ISA_DMA
1082 config HOLES_IN_ZONE
1086 # Endianness selection. Sufficiently obscure so many users don't know what to
1087 # answer,so we try hard to limit the available choices. Also the use of a
1088 # choice statement should be more obvious to the user.
1091 prompt "Endianness selection"
1093 Some MIPS machines can be configured for either little or big endian
1094 byte order. These modes require different kernels and a different
1095 Linux distribution. In general there is one preferred byteorder for a
1096 particular system but some systems are just as commonly used in the
1097 one or the other endianness.
1099 config CPU_BIG_ENDIAN
1101 depends on SYS_SUPPORTS_BIG_ENDIAN
1103 config CPU_LITTLE_ENDIAN
1104 bool "Little endian"
1105 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1112 config SYS_SUPPORTS_APM_EMULATION
1115 config SYS_SUPPORTS_BIG_ENDIAN
1118 config SYS_SUPPORTS_LITTLE_ENDIAN
1121 config SYS_SUPPORTS_HUGETLBFS
1123 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1126 config MIPS_HUGE_TLB_SUPPORT
1127 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1148 config PCI_GT64XXX_PCI0
1151 config NO_EXCEPT_FILL
1158 select DMA_NONCOHERENT
1160 select SWAP_IO_SPACE
1161 select SYS_HAS_CPU_R5500
1162 select SYS_SUPPORTS_32BIT_KERNEL
1163 select SYS_SUPPORTS_64BIT_KERNEL
1164 select SYS_SUPPORTS_BIG_ENDIAN
1171 select DMA_NONCOHERENT
1172 select SYS_HAS_CPU_MIPS32_R2
1173 select SYS_SUPPORTS_32BIT_KERNEL
1174 select SYS_SUPPORTS_LITTLE_ENDIAN
1175 select SYS_SUPPORTS_BIG_ENDIAN
1176 select SYS_SUPPORTS_MIPS16
1177 select CPU_MIPSR2_IRQ_VI
1186 config SWAP_IO_SPACE
1189 config SGI_HAS_INDYDOG
1201 config SGI_HAS_ZILOG
1204 config SGI_HAS_I8042
1207 config DEFAULT_SGI_PARTITION
1219 config MIPS_L1_CACHE_SHIFT_4
1222 config MIPS_L1_CACHE_SHIFT_5
1225 config MIPS_L1_CACHE_SHIFT_6
1228 config MIPS_L1_CACHE_SHIFT_7
1231 config MIPS_L1_CACHE_SHIFT
1233 default "4" if MIPS_L1_CACHE_SHIFT_4
1234 default "5" if MIPS_L1_CACHE_SHIFT_5
1235 default "6" if MIPS_L1_CACHE_SHIFT_6
1236 default "7" if MIPS_L1_CACHE_SHIFT_7
1239 config HAVE_STD_PC_SERIAL_PORT
1243 bool "ARC console support"
1244 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1248 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1253 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1262 menu "CPU selection"
1268 config CPU_LOONGSON3
1269 bool "Loongson 3 CPU"
1270 depends on SYS_HAS_CPU_LOONGSON3
1271 select CPU_SUPPORTS_64BIT_KERNEL
1272 select CPU_SUPPORTS_HIGHMEM
1273 select CPU_SUPPORTS_HUGEPAGES
1274 select WEAK_ORDERING
1275 select WEAK_REORDERING_BEYOND_LLSC
1277 The Loongson 3 processor implements the MIPS64R2 instruction
1278 set with many extensions.
1280 config CPU_LOONGSON2E
1282 depends on SYS_HAS_CPU_LOONGSON2E
1283 select CPU_LOONGSON2
1285 The Loongson 2E processor implements the MIPS III instruction set
1286 with many extensions.
1288 It has an internal FPGA northbridge, which is compatible to
1291 config CPU_LOONGSON2F
1293 depends on SYS_HAS_CPU_LOONGSON2F
1294 select CPU_LOONGSON2
1295 select ARCH_REQUIRE_GPIOLIB
1297 The Loongson 2F processor implements the MIPS III instruction set
1298 with many extensions.
1300 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1301 have a similar programming interface with FPGA northbridge used in
1304 config CPU_LOONGSON1B
1306 depends on SYS_HAS_CPU_LOONGSON1B
1307 select CPU_LOONGSON1
1309 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1310 release 2 instruction set.
1312 config CPU_MIPS32_R1
1313 bool "MIPS32 Release 1"
1314 depends on SYS_HAS_CPU_MIPS32_R1
1315 select CPU_HAS_PREFETCH
1316 select CPU_SUPPORTS_32BIT_KERNEL
1317 select CPU_SUPPORTS_HIGHMEM
1319 Choose this option to build a kernel for release 1 or later of the
1320 MIPS32 architecture. Most modern embedded systems with a 32-bit
1321 MIPS processor are based on a MIPS32 processor. If you know the
1322 specific type of processor in your system, choose those that one
1323 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1324 Release 2 of the MIPS32 architecture is available since several
1325 years so chances are you even have a MIPS32 Release 2 processor
1326 in which case you should choose CPU_MIPS32_R2 instead for better
1329 config CPU_MIPS32_R2
1330 bool "MIPS32 Release 2"
1331 depends on SYS_HAS_CPU_MIPS32_R2
1332 select CPU_HAS_PREFETCH
1333 select CPU_SUPPORTS_32BIT_KERNEL
1334 select CPU_SUPPORTS_HIGHMEM
1335 select CPU_SUPPORTS_MSA
1338 Choose this option to build a kernel for release 2 or later of the
1339 MIPS32 architecture. Most modern embedded systems with a 32-bit
1340 MIPS processor are based on a MIPS32 processor. If you know the
1341 specific type of processor in your system, choose those that one
1342 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1344 config CPU_MIPS32_R6
1345 bool "MIPS32 Release 6 (EXPERIMENTAL)"
1346 depends on SYS_HAS_CPU_MIPS32_R6
1347 select CPU_HAS_PREFETCH
1348 select CPU_SUPPORTS_32BIT_KERNEL
1349 select CPU_SUPPORTS_HIGHMEM
1350 select CPU_SUPPORTS_MSA
1353 select MIPS_O32_FP64_SUPPORT
1355 Choose this option to build a kernel for release 6 or later of the
1356 MIPS32 architecture. New MIPS processors, starting with the Warrior
1357 family, are based on a MIPS32r6 processor. If you own an older
1358 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1360 config CPU_MIPS64_R1
1361 bool "MIPS64 Release 1"
1362 depends on SYS_HAS_CPU_MIPS64_R1
1363 select CPU_HAS_PREFETCH
1364 select CPU_SUPPORTS_32BIT_KERNEL
1365 select CPU_SUPPORTS_64BIT_KERNEL
1366 select CPU_SUPPORTS_HIGHMEM
1367 select CPU_SUPPORTS_HUGEPAGES
1369 Choose this option to build a kernel for release 1 or later of the
1370 MIPS64 architecture. Many modern embedded systems with a 64-bit
1371 MIPS processor are based on a MIPS64 processor. If you know the
1372 specific type of processor in your system, choose those that one
1373 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1374 Release 2 of the MIPS64 architecture is available since several
1375 years so chances are you even have a MIPS64 Release 2 processor
1376 in which case you should choose CPU_MIPS64_R2 instead for better
1379 config CPU_MIPS64_R2
1380 bool "MIPS64 Release 2"
1381 depends on SYS_HAS_CPU_MIPS64_R2
1382 select CPU_HAS_PREFETCH
1383 select CPU_SUPPORTS_32BIT_KERNEL
1384 select CPU_SUPPORTS_64BIT_KERNEL
1385 select CPU_SUPPORTS_HIGHMEM
1386 select CPU_SUPPORTS_HUGEPAGES
1387 select CPU_SUPPORTS_MSA
1389 Choose this option to build a kernel for release 2 or later of the
1390 MIPS64 architecture. Many modern embedded systems with a 64-bit
1391 MIPS processor are based on a MIPS64 processor. If you know the
1392 specific type of processor in your system, choose those that one
1393 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1395 config CPU_MIPS64_R6
1396 bool "MIPS64 Release 6 (EXPERIMENTAL)"
1397 depends on SYS_HAS_CPU_MIPS64_R6
1398 select CPU_HAS_PREFETCH
1399 select CPU_SUPPORTS_32BIT_KERNEL
1400 select CPU_SUPPORTS_64BIT_KERNEL
1401 select CPU_SUPPORTS_HIGHMEM
1402 select CPU_SUPPORTS_MSA
1405 Choose this option to build a kernel for release 6 or later of the
1406 MIPS64 architecture. New MIPS processors, starting with the Warrior
1407 family, are based on a MIPS64r6 processor. If you own an older
1408 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1412 depends on SYS_HAS_CPU_R3000
1414 select CPU_SUPPORTS_32BIT_KERNEL
1415 select CPU_SUPPORTS_HIGHMEM
1417 Please make sure to pick the right CPU type. Linux/MIPS is not
1418 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1419 *not* work on R4000 machines and vice versa. However, since most
1420 of the supported machines have an R4000 (or similar) CPU, R4x00
1421 might be a safe bet. If the resulting kernel does not work,
1422 try to recompile with R3000.
1426 depends on SYS_HAS_CPU_TX39XX
1427 select CPU_SUPPORTS_32BIT_KERNEL
1431 depends on SYS_HAS_CPU_VR41XX
1432 select CPU_SUPPORTS_32BIT_KERNEL
1433 select CPU_SUPPORTS_64BIT_KERNEL
1435 The options selects support for the NEC VR4100 series of processors.
1436 Only choose this option if you have one of these processors as a
1437 kernel built with this option will not run on any other type of
1438 processor or vice versa.
1442 depends on SYS_HAS_CPU_R4300
1443 select CPU_SUPPORTS_32BIT_KERNEL
1444 select CPU_SUPPORTS_64BIT_KERNEL
1446 MIPS Technologies R4300-series processors.
1450 depends on SYS_HAS_CPU_R4X00
1451 select CPU_SUPPORTS_32BIT_KERNEL
1452 select CPU_SUPPORTS_64BIT_KERNEL
1453 select CPU_SUPPORTS_HUGEPAGES
1455 MIPS Technologies R4000-series processors other than 4300, including
1456 the R4000, R4400, R4600, and 4700.
1460 depends on SYS_HAS_CPU_TX49XX
1461 select CPU_HAS_PREFETCH
1462 select CPU_SUPPORTS_32BIT_KERNEL
1463 select CPU_SUPPORTS_64BIT_KERNEL
1464 select CPU_SUPPORTS_HUGEPAGES
1468 depends on SYS_HAS_CPU_R5000
1469 select CPU_SUPPORTS_32BIT_KERNEL
1470 select CPU_SUPPORTS_64BIT_KERNEL
1471 select CPU_SUPPORTS_HUGEPAGES
1473 MIPS Technologies R5000-series processors other than the Nevada.
1477 depends on SYS_HAS_CPU_R5432
1478 select CPU_SUPPORTS_32BIT_KERNEL
1479 select CPU_SUPPORTS_64BIT_KERNEL
1480 select CPU_SUPPORTS_HUGEPAGES
1484 depends on SYS_HAS_CPU_R5500
1485 select CPU_SUPPORTS_32BIT_KERNEL
1486 select CPU_SUPPORTS_64BIT_KERNEL
1487 select CPU_SUPPORTS_HUGEPAGES
1489 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1494 depends on SYS_HAS_CPU_R6000
1495 select CPU_SUPPORTS_32BIT_KERNEL
1497 MIPS Technologies R6000 and R6000A series processors. Note these
1498 processors are extremely rare and the support for them is incomplete.
1502 depends on SYS_HAS_CPU_NEVADA
1503 select CPU_SUPPORTS_32BIT_KERNEL
1504 select CPU_SUPPORTS_64BIT_KERNEL
1505 select CPU_SUPPORTS_HUGEPAGES
1507 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1511 depends on SYS_HAS_CPU_R8000
1512 select CPU_HAS_PREFETCH
1513 select CPU_SUPPORTS_64BIT_KERNEL
1515 MIPS Technologies R8000 processors. Note these processors are
1516 uncommon and the support for them is incomplete.
1520 depends on SYS_HAS_CPU_R10000
1521 select CPU_HAS_PREFETCH
1522 select CPU_SUPPORTS_32BIT_KERNEL
1523 select CPU_SUPPORTS_64BIT_KERNEL
1524 select CPU_SUPPORTS_HIGHMEM
1525 select CPU_SUPPORTS_HUGEPAGES
1527 MIPS Technologies R10000-series processors.
1531 depends on SYS_HAS_CPU_RM7000
1532 select CPU_HAS_PREFETCH
1533 select CPU_SUPPORTS_32BIT_KERNEL
1534 select CPU_SUPPORTS_64BIT_KERNEL
1535 select CPU_SUPPORTS_HIGHMEM
1536 select CPU_SUPPORTS_HUGEPAGES
1540 depends on SYS_HAS_CPU_SB1
1541 select CPU_SUPPORTS_32BIT_KERNEL
1542 select CPU_SUPPORTS_64BIT_KERNEL
1543 select CPU_SUPPORTS_HIGHMEM
1544 select CPU_SUPPORTS_HUGEPAGES
1545 select WEAK_ORDERING
1547 config CPU_CAVIUM_OCTEON
1548 bool "Cavium Octeon processor"
1549 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1550 select CPU_HAS_PREFETCH
1551 select CPU_SUPPORTS_64BIT_KERNEL
1552 select WEAK_ORDERING
1553 select CPU_SUPPORTS_HIGHMEM
1554 select CPU_SUPPORTS_HUGEPAGES
1555 select USB_EHCI_BIG_ENDIAN_MMIO
1556 select MIPS_L1_CACHE_SHIFT_7
1558 The Cavium Octeon processor is a highly integrated chip containing
1559 many ethernet hardware widgets for networking tasks. The processor
1560 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1561 Full details can be found at http://www.caviumnetworks.com.
1564 bool "Broadcom BMIPS"
1565 depends on SYS_HAS_CPU_BMIPS
1567 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1568 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1569 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1570 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1571 select CPU_SUPPORTS_32BIT_KERNEL
1572 select DMA_NONCOHERENT
1574 select SWAP_IO_SPACE
1575 select WEAK_ORDERING
1576 select CPU_SUPPORTS_HIGHMEM
1577 select CPU_HAS_PREFETCH
1579 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1582 bool "Netlogic XLR SoC"
1583 depends on SYS_HAS_CPU_XLR
1584 select CPU_SUPPORTS_32BIT_KERNEL
1585 select CPU_SUPPORTS_64BIT_KERNEL
1586 select CPU_SUPPORTS_HIGHMEM
1587 select CPU_SUPPORTS_HUGEPAGES
1588 select WEAK_ORDERING
1589 select WEAK_REORDERING_BEYOND_LLSC
1591 Netlogic Microsystems XLR/XLS processors.
1594 bool "Netlogic XLP SoC"
1595 depends on SYS_HAS_CPU_XLP
1596 select CPU_SUPPORTS_32BIT_KERNEL
1597 select CPU_SUPPORTS_64BIT_KERNEL
1598 select CPU_SUPPORTS_HIGHMEM
1599 select WEAK_ORDERING
1600 select WEAK_REORDERING_BEYOND_LLSC
1601 select CPU_HAS_PREFETCH
1604 Netlogic Microsystems XLP processors.
1607 config CPU_MIPS32_3_5_FEATURES
1608 bool "MIPS32 Release 3.5 Features"
1609 depends on SYS_HAS_CPU_MIPS32_R3_5
1610 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1612 Choose this option to build a kernel for release 2 or later of the
1613 MIPS32 architecture including features from the 3.5 release such as
1614 support for Enhanced Virtual Addressing (EVA).
1616 config CPU_MIPS32_3_5_EVA
1617 bool "Enhanced Virtual Addressing (EVA)"
1618 depends on CPU_MIPS32_3_5_FEATURES
1622 Choose this option if you want to enable the Enhanced Virtual
1623 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1624 One of its primary benefits is an increase in the maximum size
1625 of lowmem (up to 3GB). If unsure, say 'N' here.
1628 config CPU_NOP_WORKAROUNDS
1631 config CPU_JUMP_WORKAROUNDS
1634 config CPU_LOONGSON2F_WORKAROUNDS
1635 bool "Loongson 2F Workarounds"
1637 select CPU_NOP_WORKAROUNDS
1638 select CPU_JUMP_WORKAROUNDS
1640 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1641 require workarounds. Without workarounds the system may hang
1642 unexpectedly. For more information please refer to the gas
1643 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1645 Loongson 2F03 and later have fixed these issues and no workarounds
1646 are needed. The workarounds have no significant side effect on them
1647 but may decrease the performance of the system so this option should
1648 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1651 If unsure, please say Y.
1652 endif # CPU_LOONGSON2F
1654 config SYS_SUPPORTS_ZBOOT
1656 select HAVE_KERNEL_GZIP
1657 select HAVE_KERNEL_BZIP2
1658 select HAVE_KERNEL_LZ4
1659 select HAVE_KERNEL_LZMA
1660 select HAVE_KERNEL_LZO
1661 select HAVE_KERNEL_XZ
1663 config SYS_SUPPORTS_ZBOOT_UART16550
1665 select SYS_SUPPORTS_ZBOOT
1667 config CPU_LOONGSON2
1669 select CPU_SUPPORTS_32BIT_KERNEL
1670 select CPU_SUPPORTS_64BIT_KERNEL
1671 select CPU_SUPPORTS_HIGHMEM
1672 select CPU_SUPPORTS_HUGEPAGES
1674 config CPU_LOONGSON1
1678 select CPU_HAS_PREFETCH
1679 select CPU_SUPPORTS_32BIT_KERNEL
1680 select CPU_SUPPORTS_HIGHMEM
1681 select CPU_SUPPORTS_CPUFREQ
1683 config CPU_BMIPS32_3300
1684 select SMP_UP if SMP
1687 config CPU_BMIPS4350
1689 select SYS_SUPPORTS_SMP
1690 select SYS_SUPPORTS_HOTPLUG_CPU
1692 config CPU_BMIPS4380
1694 select MIPS_L1_CACHE_SHIFT_6
1695 select SYS_SUPPORTS_SMP
1696 select SYS_SUPPORTS_HOTPLUG_CPU
1698 config CPU_BMIPS5000
1700 select MIPS_CPU_SCACHE
1701 select MIPS_L1_CACHE_SHIFT_7
1702 select SYS_SUPPORTS_SMP
1703 select SYS_SUPPORTS_HOTPLUG_CPU
1705 config SYS_HAS_CPU_LOONGSON3
1707 select CPU_SUPPORTS_CPUFREQ
1709 config SYS_HAS_CPU_LOONGSON2E
1712 config SYS_HAS_CPU_LOONGSON2F
1714 select CPU_SUPPORTS_CPUFREQ
1715 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1716 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1718 config SYS_HAS_CPU_LOONGSON1B
1721 config SYS_HAS_CPU_MIPS32_R1
1724 config SYS_HAS_CPU_MIPS32_R2
1727 config SYS_HAS_CPU_MIPS32_R3_5
1730 config SYS_HAS_CPU_MIPS32_R6
1733 config SYS_HAS_CPU_MIPS64_R1
1736 config SYS_HAS_CPU_MIPS64_R2
1739 config SYS_HAS_CPU_MIPS64_R6
1742 config SYS_HAS_CPU_R3000
1745 config SYS_HAS_CPU_TX39XX
1748 config SYS_HAS_CPU_VR41XX
1751 config SYS_HAS_CPU_R4300
1754 config SYS_HAS_CPU_R4X00
1757 config SYS_HAS_CPU_TX49XX
1760 config SYS_HAS_CPU_R5000
1763 config SYS_HAS_CPU_R5432
1766 config SYS_HAS_CPU_R5500
1769 config SYS_HAS_CPU_R6000
1772 config SYS_HAS_CPU_NEVADA
1775 config SYS_HAS_CPU_R8000
1778 config SYS_HAS_CPU_R10000
1781 config SYS_HAS_CPU_RM7000
1784 config SYS_HAS_CPU_SB1
1787 config SYS_HAS_CPU_CAVIUM_OCTEON
1790 config SYS_HAS_CPU_BMIPS
1793 config SYS_HAS_CPU_BMIPS32_3300
1795 select SYS_HAS_CPU_BMIPS
1797 config SYS_HAS_CPU_BMIPS4350
1799 select SYS_HAS_CPU_BMIPS
1801 config SYS_HAS_CPU_BMIPS4380
1803 select SYS_HAS_CPU_BMIPS
1805 config SYS_HAS_CPU_BMIPS5000
1807 select SYS_HAS_CPU_BMIPS
1809 config SYS_HAS_CPU_XLR
1812 config SYS_HAS_CPU_XLP
1815 config MIPS_MALTA_PM
1816 depends on MIPS_MALTA
1822 # CPU may reorder R->R, R->W, W->R, W->W
1823 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1825 config WEAK_ORDERING
1829 # CPU may reorder reads and writes beyond LL/SC
1830 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1832 config WEAK_REORDERING_BEYOND_LLSC
1837 # These two indicate any level of the MIPS32 and MIPS64 architecture
1841 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1845 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1848 # These two indicate the revision of the architecture, either Release 1 or Release 2
1852 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1856 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1861 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1867 config SYS_SUPPORTS_32BIT_KERNEL
1869 config SYS_SUPPORTS_64BIT_KERNEL
1871 config CPU_SUPPORTS_32BIT_KERNEL
1873 config CPU_SUPPORTS_64BIT_KERNEL
1875 config CPU_SUPPORTS_CPUFREQ
1877 config CPU_SUPPORTS_ADDRWINCFG
1879 config CPU_SUPPORTS_HUGEPAGES
1881 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1883 config MIPS_PGD_C0_CONTEXT
1885 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1888 # Set to y for ptrace access to watch registers.
1890 config HARDWARE_WATCHPOINTS
1892 default y if CPU_MIPSR1 || CPU_MIPSR2
1897 prompt "Kernel code model"
1899 You should only select this option if you have a workload that
1900 actually benefits from 64-bit processing or if your machine has
1901 large memory. You will only be presented a single option in this
1902 menu if your system does not support both 32-bit and 64-bit kernels.
1905 bool "32-bit kernel"
1906 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1909 Select this option if you want to build a 32-bit kernel.
1911 bool "64-bit kernel"
1912 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1914 Select this option if you want to build a 64-bit kernel.
1919 bool "KVM Guest Kernel"
1920 depends on BROKEN_ON_SMP
1922 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1924 config KVM_GUEST_TIMER_FREQ
1925 int "Count/Compare Timer Frequency (MHz)"
1926 depends on KVM_GUEST
1929 Set this to non-zero if building a guest kernel for KVM to skip RTC
1930 emulation when determining guest CPU Frequency. Instead, the guest's
1931 timer frequency is specified directly.
1934 prompt "Kernel page size"
1935 default PAGE_SIZE_4KB
1937 config PAGE_SIZE_4KB
1939 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
1941 This option select the standard 4kB Linux page size. On some
1942 R3000-family processors this is the only available page size. Using
1943 4kB page size will minimize memory consumption and is therefore
1944 recommended for low memory systems.
1946 config PAGE_SIZE_8KB
1948 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1950 Using 8kB page size will result in higher performance kernel at
1951 the price of higher memory consumption. This option is available
1952 only on R8000 and cnMIPS processors. Note that you will need a
1953 suitable Linux distribution to support this.
1955 config PAGE_SIZE_16KB
1957 depends on !CPU_R3000 && !CPU_TX39XX
1959 Using 16kB page size will result in higher performance kernel at
1960 the price of higher memory consumption. This option is available on
1961 all non-R3000 family processors. Note that you will need a suitable
1962 Linux distribution to support this.
1964 config PAGE_SIZE_32KB
1966 depends on CPU_CAVIUM_OCTEON
1968 Using 32kB page size will result in higher performance kernel at
1969 the price of higher memory consumption. This option is available
1970 only on cnMIPS cores. Note that you will need a suitable Linux
1971 distribution to support this.
1973 config PAGE_SIZE_64KB
1975 depends on !CPU_R3000 && !CPU_TX39XX
1977 Using 64kB page size will result in higher performance kernel at
1978 the price of higher memory consumption. This option is available on
1979 all non-R3000 family processor. Not that at the time of this
1980 writing this option is still high experimental.
1984 config FORCE_MAX_ZONEORDER
1985 int "Maximum zone order"
1986 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
1987 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
1988 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
1989 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
1990 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
1991 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
1995 The kernel memory allocator divides physically contiguous memory
1996 blocks into "zones", where each zone is a power of two number of
1997 pages. This option selects the largest power of two that the kernel
1998 keeps in the memory allocator. If you need to allocate very large
1999 blocks of physically contiguous memory, then you may need to
2000 increase this value.
2002 This config option is actually maximum order plus one. For example,
2003 a value of 11 means that the largest free memory block is 2^10 pages.
2005 The page size is not necessarily 4KB. Keep this in mind
2006 when choosing a value for this option.
2011 config IP22_CPU_SCACHE
2016 # Support for a MIPS32 / MIPS64 style S-caches
2018 config MIPS_CPU_SCACHE
2022 config R5000_CPU_SCACHE
2026 config RM7000_CPU_SCACHE
2030 config SIBYTE_DMA_PAGEOPS
2031 bool "Use DMA to clear/copy pages"
2034 Instead of using the CPU to zero and copy pages, use a Data Mover
2035 channel. These DMA channels are otherwise unused by the standard
2036 SiByte Linux port. Seems to give a small performance benefit.
2038 config CPU_HAS_PREFETCH
2041 config CPU_GENERIC_DUMP_TLB
2043 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2047 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2049 config CPU_R4K_CACHE_TLB
2051 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2054 bool "MIPS MT SMP support (1 TC on each available VPE)"
2055 depends on SYS_SUPPORTS_MULTITHREADING
2056 select CPU_MIPSR2_IRQ_VI
2057 select CPU_MIPSR2_IRQ_EI
2063 select SYS_SUPPORTS_SMP
2064 select SYS_SUPPORTS_SCHED_SMT
2065 select MIPS_PERF_SHARED_TC_COUNTERS
2067 This is a kernel model which is known as SMVP. This is supported
2068 on cores with the MT ASE and uses the available VPEs to implement
2069 virtual processors which supports SMP. This is equivalent to the
2070 Intel Hyperthreading feature. For further information go to
2071 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2077 bool "SMT (multithreading) scheduler support"
2078 depends on SYS_SUPPORTS_SCHED_SMT
2081 SMT scheduler support improves the CPU scheduler's decision making
2082 when dealing with MIPS MT enabled cores at a cost of slightly
2083 increased overhead in some places. If unsure say N here.
2085 config SYS_SUPPORTS_SCHED_SMT
2088 config SYS_SUPPORTS_MULTITHREADING
2091 config MIPS_MT_FPAFF
2092 bool "Dynamic FPU affinity for FP-intensive threads"
2094 depends on MIPS_MT_SMP
2096 config MIPSR2_TO_R6_EMULATOR
2097 bool "MIPS R2-to-R6 emulator"
2098 depends on CPU_MIPSR6 && !SMP
2101 Choose this option if you want to run non-R6 MIPS userland code.
2102 Even if you say 'Y' here, the emulator will still be disabled by
2103 default. You can enable it using the 'mipsr2emul' kernel option.
2104 The only reason this is a build-time option is to save ~14K from the
2106 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2107 depends on SMP && CPU_MIPSR6
2109 config MIPS_VPE_LOADER
2110 bool "VPE loader support."
2111 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2112 select CPU_MIPSR2_IRQ_VI
2113 select CPU_MIPSR2_IRQ_EI
2116 Includes a loader for loading an elf relocatable object
2117 onto another VPE and running it.
2119 config MIPS_VPE_LOADER_CMP
2122 depends on MIPS_VPE_LOADER && MIPS_CMP
2124 config MIPS_VPE_LOADER_MT
2127 depends on MIPS_VPE_LOADER && !MIPS_CMP
2129 config MIPS_VPE_LOADER_TOM
2130 bool "Load VPE program into memory hidden from linux"
2131 depends on MIPS_VPE_LOADER
2134 The loader can use memory that is present but has been hidden from
2135 Linux using the kernel command line option "mem=xxMB". It's up to
2136 you to ensure the amount you put in the option and the space your
2137 program requires is less or equal to the amount physically present.
2139 config MIPS_VPE_APSP_API
2140 bool "Enable support for AP/SP API (RTLX)"
2141 depends on MIPS_VPE_LOADER
2144 config MIPS_VPE_APSP_API_CMP
2147 depends on MIPS_VPE_APSP_API && MIPS_CMP
2149 config MIPS_VPE_APSP_API_MT
2152 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2155 bool "MIPS CMP framework support (DEPRECATED)"
2156 depends on SYS_SUPPORTS_MIPS_CMP
2160 select SYS_SUPPORTS_SMP
2161 select WEAK_ORDERING
2164 Select this if you are using a bootloader which implements the "CMP
2165 framework" protocol (ie. YAMON) and want your kernel to make use of
2166 its ability to start secondary CPUs.
2168 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2172 bool "MIPS Coherent Processing System support"
2173 depends on SYS_SUPPORTS_MIPS_CPS
2176 select MIPS_CPS_PM if HOTPLUG_CPU
2179 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2180 select SYS_SUPPORTS_HOTPLUG_CPU
2181 select SYS_SUPPORTS_SMP
2182 select WEAK_ORDERING
2184 Select this if you wish to run an SMP kernel across multiple cores
2185 within a MIPS Coherent Processing System. When this option is
2186 enabled the kernel will probe for other cores and boot them with
2187 no external assistance. It is safe to enable this when hardware
2188 support is unavailable.
2204 config SB1_PASS_1_WORKAROUNDS
2206 depends on CPU_SB1_PASS_1
2209 config SB1_PASS_2_WORKAROUNDS
2211 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2214 config SB1_PASS_2_1_WORKAROUNDS
2216 depends on CPU_SB1 && CPU_SB1_PASS_2
2220 config ARCH_PHYS_ADDR_T_64BIT
2224 prompt "SmartMIPS or microMIPS ASE support"
2226 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2229 Select this if you want neither microMIPS nor SmartMIPS support
2231 config CPU_HAS_SMARTMIPS
2232 depends on SYS_SUPPORTS_SMARTMIPS
2235 SmartMIPS is a extension of the MIPS32 architecture aimed at
2236 increased security at both hardware and software level for
2237 smartcards. Enabling this option will allow proper use of the
2238 SmartMIPS instructions by Linux applications. However a kernel with
2239 this option will not work on a MIPS core without SmartMIPS core. If
2240 you don't know you probably don't have SmartMIPS and should say N
2243 config CPU_MICROMIPS
2244 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2247 When this option is enabled the kernel will be built using the
2253 bool "Support for the MIPS SIMD Architecture (EXPERIMENTAL)"
2254 depends on CPU_SUPPORTS_MSA
2255 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2257 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2258 and a set of SIMD instructions to operate on them. When this option
2259 is enabled the kernel will support allocating & switching MSA
2260 vector register contexts. If you know that your kernel will only be
2261 running on CPUs which do not support MSA or that your userland will
2262 not be making use of it then you may wish to say N here to reduce
2263 the size & complexity of your kernel.
2274 # Vectored interrupt mode is an R2 feature
2276 config CPU_MIPSR2_IRQ_VI
2280 # Extended interrupt mode is an R2 feature
2282 config CPU_MIPSR2_IRQ_EI
2287 depends on !CPU_R3000
2293 config CPU_DADDI_WORKAROUNDS
2296 config CPU_R4000_WORKAROUNDS
2298 select CPU_R4400_WORKAROUNDS
2300 config CPU_R4400_WORKAROUNDS
2304 # - Highmem only makes sense for the 32-bit kernel.
2305 # - The current highmem code will only work properly on physically indexed
2306 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2307 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2308 # moment we protect the user and offer the highmem option only on machines
2309 # where it's known to be safe. This will not offer highmem on a few systems
2310 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2311 # indexed CPUs but we're playing safe.
2312 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2313 # know they might have memory configurations that could make use of highmem
2317 bool "High Memory Support"
2318 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2320 config CPU_SUPPORTS_HIGHMEM
2323 config SYS_SUPPORTS_HIGHMEM
2326 config SYS_SUPPORTS_SMARTMIPS
2329 config SYS_SUPPORTS_MICROMIPS
2332 config SYS_SUPPORTS_MIPS16
2335 This option must be set if a kernel might be executed on a MIPS16-
2336 enabled CPU even if MIPS16 is not actually being used. In other
2337 words, it makes the kernel MIPS16-tolerant.
2339 config CPU_SUPPORTS_MSA
2342 config ARCH_FLATMEM_ENABLE
2344 depends on !NUMA && !CPU_LOONGSON2
2346 config ARCH_DISCONTIGMEM_ENABLE
2348 default y if SGI_IP27
2350 Say Y to support efficient handling of discontiguous physical memory,
2351 for architectures which are either NUMA (Non-Uniform Memory Access)
2352 or have huge holes in the physical address space for other reasons.
2353 See <file:Documentation/vm/numa> for more.
2355 config ARCH_SPARSEMEM_ENABLE
2357 select SPARSEMEM_STATIC
2361 depends on SYS_SUPPORTS_NUMA
2363 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2364 Access). This option improves performance on systems with more
2365 than two nodes; on two node systems it is generally better to
2366 leave it disabled; on single node systems disable this option
2369 config SYS_SUPPORTS_NUMA
2375 depends on NEED_MULTIPLE_NODES
2377 config HW_PERF_EVENTS
2378 bool "Enable hardware performance counter support for perf events"
2379 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2382 Enable hardware performance counter support for perf events. If
2383 disabled, perf events will use software events only.
2388 bool "Multi-Processing support"
2389 depends on SYS_SUPPORTS_SMP
2391 This enables support for systems with more than one CPU. If you have
2392 a system with only one CPU, say N. If you have a system with more
2393 than one CPU, say Y.
2395 If you say N here, the kernel will run on uni- and multiprocessor
2396 machines, but will use only one CPU of a multiprocessor machine. If
2397 you say Y here, the kernel will run on many, but not all,
2398 uniprocessor machines. On a uniprocessor machine, the kernel
2399 will run faster if you say N here.
2401 People using multiprocessor machines who say Y here should also say
2402 Y to "Enhanced Real Time Clock Support", below.
2404 See also the SMP-HOWTO available at
2405 <http://www.tldp.org/docs.html#howto>.
2407 If you don't know what to do here, say N.
2412 config SYS_SUPPORTS_MIPS_CMP
2415 config SYS_SUPPORTS_MIPS_CPS
2418 config SYS_SUPPORTS_SMP
2421 config NR_CPUS_DEFAULT_4
2424 config NR_CPUS_DEFAULT_8
2427 config NR_CPUS_DEFAULT_16
2430 config NR_CPUS_DEFAULT_32
2433 config NR_CPUS_DEFAULT_64
2437 int "Maximum number of CPUs (2-256)"
2440 default "4" if NR_CPUS_DEFAULT_4
2441 default "8" if NR_CPUS_DEFAULT_8
2442 default "16" if NR_CPUS_DEFAULT_16
2443 default "32" if NR_CPUS_DEFAULT_32
2444 default "64" if NR_CPUS_DEFAULT_64
2446 This allows you to specify the maximum number of CPUs which this
2447 kernel will support. The maximum supported value is 32 for 32-bit
2448 kernel and 64 for 64-bit kernels; the minimum value which makes
2449 sense is 1 for Qemu (useful only for kernel debugging purposes)
2450 and 2 for all others.
2452 This is purely to save memory - each supported CPU adds
2453 approximately eight kilobytes to the kernel image. For best
2454 performance should round up your number of processors to the next
2457 config MIPS_PERF_SHARED_TC_COUNTERS
2461 # Timer Interrupt Frequency Configuration
2465 prompt "Timer frequency"
2468 Allows the configuration of the timer frequency.
2471 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2474 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2477 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2480 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2483 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2486 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2489 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2493 config SYS_SUPPORTS_48HZ
2496 config SYS_SUPPORTS_100HZ
2499 config SYS_SUPPORTS_128HZ
2502 config SYS_SUPPORTS_250HZ
2505 config SYS_SUPPORTS_256HZ
2508 config SYS_SUPPORTS_1000HZ
2511 config SYS_SUPPORTS_1024HZ
2514 config SYS_SUPPORTS_ARBIT_HZ
2516 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2517 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2518 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2519 !SYS_SUPPORTS_1024HZ
2524 default 100 if HZ_100
2525 default 128 if HZ_128
2526 default 250 if HZ_250
2527 default 256 if HZ_256
2528 default 1000 if HZ_1000
2529 default 1024 if HZ_1024
2531 source "kernel/Kconfig.preempt"
2534 bool "Kexec system call"
2536 kexec is a system call that implements the ability to shutdown your
2537 current kernel, and to start another kernel. It is like a reboot
2538 but it is independent of the system firmware. And like a reboot
2539 you can start any kernel with it, not just Linux.
2541 The name comes from the similarity to the exec system call.
2543 It is an ongoing process to be certain the hardware in a machine
2544 is properly shutdown, so do not be surprised if this code does not
2545 initially work for you. As of this writing the exact hardware
2546 interface is strongly in flux, so no good recommendation can be
2550 bool "Kernel crash dumps"
2552 Generate crash dump after being started by kexec.
2553 This should be normally only set in special crash dump kernels
2554 which are loaded in the main kernel with kexec-tools into
2555 a specially reserved region and then later executed after
2556 a crash by kdump/kexec. The crash dump kernel must be compiled
2557 to a memory address not used by the main kernel or firmware using
2560 config PHYSICAL_START
2561 hex "Physical address where the kernel is loaded"
2562 default "0xffffffff84000000" if 64BIT
2563 default "0x84000000" if 32BIT
2564 depends on CRASH_DUMP
2566 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2567 If you plan to use kernel for capturing the crash dump change
2568 this value to start of the reserved region (the "X" value as
2569 specified in the "crashkernel=YM@XM" command line boot parameter
2570 passed to the panic-ed kernel).
2573 bool "Enable seccomp to safely compute untrusted bytecode"
2577 This kernel feature is useful for number crunching applications
2578 that may need to compute untrusted bytecode during their
2579 execution. By using pipes or other transports made available to
2580 the process as file descriptors supporting the read/write
2581 syscalls, it's possible to isolate those applications in
2582 their own address space using seccomp. Once seccomp is
2583 enabled via /proc/<pid>/seccomp, it cannot be disabled
2584 and the task is only allowed to execute a few safe syscalls
2585 defined by each seccomp mode.
2587 If unsure, say Y. Only embedded should say N here.
2589 config MIPS_O32_FP64_SUPPORT
2590 bool "Support for O32 binaries using 64-bit FP (EXPERIMENTAL)"
2591 depends on 32BIT || MIPS32_O32
2593 When this is enabled, the kernel will support use of 64-bit floating
2594 point registers with binaries using the O32 ABI along with the
2595 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2596 32-bit MIPS systems this support is at the cost of increasing the
2597 size and complexity of the compiled FPU emulator. Thus if you are
2598 running a MIPS32 system and know that none of your userland binaries
2599 will require 64-bit floating point, you may wish to reduce the size
2600 of your kernel & potentially improve FP emulation performance by
2603 Although binutils currently supports use of this flag the details
2604 concerning its effect upon the O32 ABI in userland are still being
2605 worked on. In order to avoid userland becoming dependant upon current
2606 behaviour before the details have been finalised, this option should
2607 be considered experimental and only enabled by those working upon
2615 select OF_EARLY_FLATTREE
2623 config LOCKDEP_SUPPORT
2627 config STACKTRACE_SUPPORT
2631 source "init/Kconfig"
2633 source "kernel/Kconfig.freezer"
2635 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2643 bool "Support for PCI controller"
2644 depends on HW_HAS_PCI
2646 select NO_GENERIC_PCI_IOPORT_MAP
2648 Find out whether you have a PCI motherboard. PCI is the name of a
2649 bus system, i.e. the way the CPU talks to the other stuff inside
2650 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2654 bool "Support for HT-linked PCI"
2656 depends on CPU_LOONGSON3
2660 Loongson family machines use Hyper-Transport bus for inter-core
2661 connection and device connection. The PCI bus is a subordinate
2662 linked at HT. Choose Y for Loongson-3 based machines.
2667 source "drivers/pci/Kconfig"
2669 source "drivers/pci/pcie/Kconfig"
2672 # ISA support is now enabled via select. Too many systems still have the one
2673 # or other ISA chip on the board that users don't know about so don't expect
2674 # users to choose the right thing ...
2681 depends on HW_HAS_EISA
2683 select GENERIC_ISA_DMA
2685 The Extended Industry Standard Architecture (EISA) bus was
2686 developed as an open alternative to the IBM MicroChannel bus.
2688 The EISA bus provided some of the features of the IBM MicroChannel
2689 bus while maintaining backward compatibility with cards made for
2690 the older ISA bus. The EISA bus saw limited use between 1988 and
2691 1995 when it was made obsolete by the PCI bus.
2693 Say Y here if you are building a kernel for an EISA-based machine.
2697 source "drivers/eisa/Kconfig"
2700 bool "TURBOchannel support"
2701 depends on MACH_DECSTATION
2703 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2704 processors. TURBOchannel programming specifications are available
2706 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2708 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2709 Linux driver support status is documented at:
2710 <http://www.linux-mips.org/wiki/DECstation>
2720 select MIPS_EXTERNAL_TIMER
2728 source "drivers/pcmcia/Kconfig"
2730 source "drivers/pci/hotplug/Kconfig"
2733 tristate "RapidIO support"
2737 If you say Y here, the kernel will include drivers and
2738 infrastructure code to support RapidIO interconnect devices.
2740 source "drivers/rapidio/Kconfig"
2744 menu "Executable file formats"
2746 source "fs/Kconfig.binfmt"
2751 config MIPS32_COMPAT
2757 config SYSVIPC_COMPAT
2761 bool "Kernel support for o32 binaries"
2763 select ARCH_WANT_OLD_COMPAT_IPC
2765 select MIPS32_COMPAT
2766 select SYSVIPC_COMPAT if SYSVIPC
2768 Select this option if you want to run o32 binaries. These are pure
2769 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2770 existing binaries are in this format.
2775 bool "Kernel support for n32 binaries"
2778 select MIPS32_COMPAT
2779 select SYSVIPC_COMPAT if SYSVIPC
2781 Select this option if you want to run n32 binaries. These are
2782 64-bit binaries using 32-bit quantities for addressing and certain
2783 data that would normally be 64-bit. They are used in special
2790 default y if MIPS32_O32 || MIPS32_N32
2794 menu "Power management options"
2796 config ARCH_HIBERNATION_POSSIBLE
2798 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2800 config ARCH_SUSPEND_POSSIBLE
2802 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2804 source "kernel/power/Kconfig"
2808 config MIPS_EXTERNAL_TIMER
2811 menu "CPU Power Management"
2813 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2814 source "drivers/cpufreq/Kconfig"
2817 source "drivers/cpuidle/Kconfig"
2821 source "net/Kconfig"
2823 source "drivers/Kconfig"
2825 source "drivers/firmware/Kconfig"
2829 source "arch/mips/Kconfig.debug"
2831 source "security/Kconfig"
2833 source "crypto/Kconfig"
2835 source "lib/Kconfig"
2837 source "arch/mips/kvm/Kconfig"