4 select ARCH_MIGHT_HAVE_PC_PARPORT
5 select ARCH_MIGHT_HAVE_PC_SERIO
6 select HAVE_CONTEXT_TRACKING
7 select HAVE_GENERIC_DMA_COHERENT
10 select HAVE_PERF_EVENTS
11 select PERF_USE_VMALLOC
13 select HAVE_ARCH_SECCOMP_FILTER
14 select HAVE_ARCH_TRACEHOOK
15 select HAVE_BPF_JIT if !CPU_MICROMIPS
16 select ARCH_HAVE_CUSTOM_GPIO_H
17 select HAVE_FUNCTION_TRACER
18 select HAVE_DYNAMIC_FTRACE
19 select HAVE_FTRACE_MCOUNT_RECORD
20 select HAVE_C_RECORDMCOUNT
21 select HAVE_FUNCTION_GRAPH_TRACER
23 select HAVE_KRETPROBES
24 select HAVE_SYSCALL_TRACEPOINTS
25 select HAVE_DEBUG_KMEMLEAK
26 select HAVE_SYSCALL_TRACEPOINTS
27 select ARCH_HAS_ELF_RANDOMIZE
28 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
29 select RTC_LIB if !MACH_LOONGSON64
30 select GENERIC_ATOMIC64 if !64BIT
31 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
33 select HAVE_DMA_CONTIGUOUS
34 select HAVE_DMA_API_DEBUG
35 select GENERIC_IRQ_PROBE
36 select GENERIC_IRQ_SHOW
37 select GENERIC_PCI_IOMAP
38 select HAVE_ARCH_JUMP_LABEL
39 select ARCH_WANT_IPC_PARSE_VERSION
40 select IRQ_FORCED_THREADING
42 select HAVE_MEMBLOCK_NODE_MAP
43 select ARCH_DISCARD_MEMBLOCK
44 select GENERIC_SMP_IDLE_THREAD
45 select BUILDTIME_EXTABLE_SORT
46 select GENERIC_CLOCKEVENTS
47 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
48 select GENERIC_CMOS_UPDATE
49 select HAVE_MOD_ARCH_SPECIFIC
51 select MODULES_USE_ELF_REL if MODULES
52 select MODULES_USE_ELF_RELA if MODULES && 64BIT
53 select CLONE_BACKWARDS
54 select HAVE_DEBUG_STACKOVERFLOW
55 select HAVE_CC_STACKPROTECTOR
56 select CPU_PM if CPU_IDLE
57 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
58 select ARCH_BINFMT_ELF_STATE
59 select SYSCTL_EXCEPTION_TRACE
60 select HAVE_VIRT_CPU_ACCOUNTING_GEN
61 select HAVE_IRQ_TIME_ACCOUNTING
63 menu "Machine selection"
70 bool "Alchemy processor based machines"
71 select ARCH_PHYS_ADDR_T_64BIT
75 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
76 select SYS_HAS_CPU_MIPS32_R1
77 select SYS_SUPPORTS_32BIT_KERNEL
78 select SYS_SUPPORTS_APM_EMULATION
79 select ARCH_REQUIRE_GPIOLIB
80 select SYS_SUPPORTS_ZBOOT
84 bool "Texas Instruments AR7"
86 select DMA_NONCOHERENT
92 select SYS_HAS_CPU_MIPS32_R1
93 select SYS_HAS_EARLY_PRINTK
94 select SYS_SUPPORTS_32BIT_KERNEL
95 select SYS_SUPPORTS_LITTLE_ENDIAN
96 select SYS_SUPPORTS_MIPS16
97 select SYS_SUPPORTS_ZBOOT_UART16550
98 select ARCH_REQUIRE_GPIOLIB
102 Support for the Texas Instruments AR7 System-on-a-Chip
103 family: TNETD7100, 7200 and 7300.
106 bool "Atheros AR231x/AR531x SoC support"
109 select DMA_NONCOHERENT
112 select SYS_HAS_CPU_MIPS32_R1
113 select SYS_SUPPORTS_BIG_ENDIAN
114 select SYS_SUPPORTS_32BIT_KERNEL
115 select SYS_HAS_EARLY_PRINTK
117 Support for Atheros AR231x and Atheros AR531x based boards
120 bool "Atheros AR71XX/AR724X/AR913X based boards"
121 select ARCH_REQUIRE_GPIOLIB
125 select DMA_NONCOHERENT
131 select SYS_HAS_CPU_MIPS32_R2
132 select SYS_HAS_EARLY_PRINTK
133 select SYS_SUPPORTS_32BIT_KERNEL
134 select SYS_SUPPORTS_BIG_ENDIAN
135 select SYS_SUPPORTS_MIPS16
136 select SYS_SUPPORTS_ZBOOT
139 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
142 bool "Broadcom Generic BMIPS kernel"
144 select NO_EXCEPT_FILL
150 select BCM7038_L1_IRQ
151 select BCM7120_L2_IRQ
152 select BRCMSTB_L2_IRQ
154 select RAW_IRQ_ACCESSORS
155 select DMA_NONCOHERENT
156 select SYS_SUPPORTS_32BIT_KERNEL
157 select SYS_SUPPORTS_LITTLE_ENDIAN
158 select SYS_SUPPORTS_BIG_ENDIAN
159 select SYS_SUPPORTS_HIGHMEM
160 select SYS_HAS_CPU_BMIPS32_3300
161 select SYS_HAS_CPU_BMIPS4350
162 select SYS_HAS_CPU_BMIPS4380
163 select SYS_HAS_CPU_BMIPS5000
165 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
166 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
167 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
168 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
170 Build a generic DT-based kernel image that boots on select
171 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
172 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
173 must be set appropriately for your board.
176 bool "Broadcom BCM47XX based boards"
177 select ARCH_WANT_OPTIONAL_GPIOLIB
181 select DMA_NONCOHERENT
184 select SYS_HAS_CPU_MIPS32_R1
185 select NO_EXCEPT_FILL
186 select SYS_SUPPORTS_32BIT_KERNEL
187 select SYS_SUPPORTS_LITTLE_ENDIAN
188 select SYS_SUPPORTS_MIPS16
189 select SYS_HAS_EARLY_PRINTK
190 select USE_GENERIC_EARLY_PRINTK_8250
192 select LEDS_GPIO_REGISTER
195 Support for BCM47XX based boards
198 bool "Broadcom BCM63XX based boards"
203 select DMA_NONCOHERENT
205 select SYS_SUPPORTS_32BIT_KERNEL
206 select SYS_SUPPORTS_BIG_ENDIAN
207 select SYS_HAS_EARLY_PRINTK
209 select ARCH_REQUIRE_GPIOLIB
211 select MIPS_L1_CACHE_SHIFT_4
213 Support for BCM63XX based boards
220 select DMA_NONCOHERENT
226 select PCI_GT64XXX_PCI0
228 select SYS_HAS_CPU_NEVADA
229 select SYS_HAS_EARLY_PRINTK
230 select SYS_SUPPORTS_32BIT_KERNEL
231 select SYS_SUPPORTS_64BIT_KERNEL
232 select SYS_SUPPORTS_LITTLE_ENDIAN
233 select USE_GENERIC_EARLY_PRINTK_8250
235 config MACH_DECSTATION
239 select CEVT_R4K if CPU_R4X00
241 select CSRC_R4K if CPU_R4X00
242 select CPU_DADDI_WORKAROUNDS if 64BIT
243 select CPU_R4000_WORKAROUNDS if 64BIT
244 select CPU_R4400_WORKAROUNDS if 64BIT
245 select DMA_NONCOHERENT
248 select SYS_HAS_CPU_R3000
249 select SYS_HAS_CPU_R4X00
250 select SYS_SUPPORTS_32BIT_KERNEL
251 select SYS_SUPPORTS_64BIT_KERNEL
252 select SYS_SUPPORTS_LITTLE_ENDIAN
253 select SYS_SUPPORTS_128HZ
254 select SYS_SUPPORTS_256HZ
255 select SYS_SUPPORTS_1024HZ
256 select MIPS_L1_CACHE_SHIFT_4
258 This enables support for DEC's MIPS based workstations. For details
259 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
260 DECstation porting pages on <http://decstation.unix-ag.org/>.
262 If you have one of the following DECstation Models you definitely
263 want to choose R4xx0 for the CPU Type:
270 otherwise choose R3000.
273 bool "Jazz family of machines"
276 select ARCH_MAY_HAVE_PC_FDC
279 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
280 select GENERIC_ISA_DMA
281 select HAVE_PCSPKR_PLATFORM
286 select SYS_HAS_CPU_R4X00
287 select SYS_SUPPORTS_32BIT_KERNEL
288 select SYS_SUPPORTS_64BIT_KERNEL
289 select SYS_SUPPORTS_100HZ
291 This a family of machines based on the MIPS R4030 chipset which was
292 used by several vendors to build RISC/os and Windows NT workstations.
293 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
294 Olivetti M700-10 workstations.
297 bool "Ingenic SoC based machines"
298 select SYS_SUPPORTS_32BIT_KERNEL
299 select SYS_SUPPORTS_LITTLE_ENDIAN
300 select SYS_SUPPORTS_ZBOOT_UART16550
301 select DMA_NONCOHERENT
303 select ARCH_REQUIRE_GPIOLIB
305 select GENERIC_IRQ_CHIP
311 bool "Lantiq based platforms"
312 select DMA_NONCOHERENT
316 select SYS_HAS_CPU_MIPS32_R1
317 select SYS_HAS_CPU_MIPS32_R2
318 select SYS_SUPPORTS_BIG_ENDIAN
319 select SYS_SUPPORTS_32BIT_KERNEL
320 select SYS_SUPPORTS_MIPS16
321 select SYS_SUPPORTS_MULTITHREADING
322 select SYS_HAS_EARLY_PRINTK
323 select ARCH_REQUIRE_GPIOLIB
326 select HAVE_MACH_CLKDEV
330 select PINCTRL_LANTIQ
331 select ARCH_HAS_RESET_CONTROLLER
332 select RESET_CONTROLLER
335 bool "LASAT Networks platforms"
339 select DMA_NONCOHERENT
340 select SYS_HAS_EARLY_PRINTK
343 select PCI_GT64XXX_PCI0
345 select R5000_CPU_SCACHE
346 select SYS_HAS_CPU_R5000
347 select SYS_SUPPORTS_32BIT_KERNEL
348 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
349 select SYS_SUPPORTS_LITTLE_ENDIAN
351 config MACH_LOONGSON32
352 bool "Loongson-1 family of machines"
353 select SYS_SUPPORTS_ZBOOT
355 This enables support for the Loongson-1 family of machines.
357 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
358 the Institute of Computing Technology (ICT), Chinese Academy of
361 config MACH_LOONGSON64
362 bool "Loongson-2/3 family of machines"
363 select SYS_SUPPORTS_ZBOOT
365 This enables the support of Loongson-2/3 family of machines.
367 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
368 family of multi-core CPUs. They are both 64-bit general-purpose
369 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
370 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
371 in the People's Republic of China. The chief architect is Professor
374 config MACH_PISTACHIO
375 bool "IMG Pistachio SoC based boards"
376 select ARCH_REQUIRE_GPIOLIB
380 select CLKSRC_MIPS_GIC
383 select DMA_MAYBE_COHERENT
387 select MIPS_CPU_SCACHE
391 select SYS_HAS_CPU_MIPS32_R2
392 select SYS_SUPPORTS_32BIT_KERNEL
393 select SYS_SUPPORTS_LITTLE_ENDIAN
394 select SYS_SUPPORTS_MIPS_CPS
395 select SYS_SUPPORTS_MULTITHREADING
396 select SYS_SUPPORTS_ZBOOT
397 select SYS_HAS_EARLY_PRINTK
398 select USE_GENERIC_EARLY_PRINTK_8250
401 This enables support for the IMG Pistachio SoC platform.
404 bool "MIPS Malta board"
405 select ARCH_MAY_HAVE_PC_FDC
411 select CLKSRC_MIPS_GIC
412 select DMA_MAYBE_COHERENT
413 select GENERIC_ISA_DMA
414 select HAVE_PCSPKR_PLATFORM
421 select MIPS_CPU_SCACHE
422 select MIPS_L1_CACHE_SHIFT_6
423 select PCI_GT64XXX_PCI0
426 select SYS_HAS_CPU_MIPS32_R1
427 select SYS_HAS_CPU_MIPS32_R2
428 select SYS_HAS_CPU_MIPS32_R3_5
429 select SYS_HAS_CPU_MIPS32_R5
430 select SYS_HAS_CPU_MIPS32_R6
431 select SYS_HAS_CPU_MIPS64_R1
432 select SYS_HAS_CPU_MIPS64_R2
433 select SYS_HAS_CPU_MIPS64_R6
434 select SYS_HAS_CPU_NEVADA
435 select SYS_HAS_CPU_RM7000
436 select SYS_SUPPORTS_32BIT_KERNEL
437 select SYS_SUPPORTS_64BIT_KERNEL
438 select SYS_SUPPORTS_BIG_ENDIAN
439 select SYS_SUPPORTS_HIGHMEM
440 select SYS_SUPPORTS_LITTLE_ENDIAN
441 select SYS_SUPPORTS_MICROMIPS
442 select SYS_SUPPORTS_MIPS_CMP
443 select SYS_SUPPORTS_MIPS_CPS
444 select SYS_SUPPORTS_MIPS16
445 select SYS_SUPPORTS_MULTITHREADING
446 select SYS_SUPPORTS_SMARTMIPS
447 select SYS_SUPPORTS_ZBOOT
449 select ZONE_DMA32 if 64BIT
451 This enables support for the MIPS Technologies Malta evaluation
455 bool "MIPS SEAD3 board"
461 select CLKSRC_MIPS_GIC
462 select CPU_MIPSR2_IRQ_VI
463 select CPU_MIPSR2_IRQ_EI
464 select DMA_NONCOHERENT
469 select SYS_HAS_CPU_MIPS32_R1
470 select SYS_HAS_CPU_MIPS32_R2
471 select SYS_HAS_CPU_MIPS64_R1
472 select SYS_HAS_EARLY_PRINTK
473 select SYS_SUPPORTS_32BIT_KERNEL
474 select SYS_SUPPORTS_64BIT_KERNEL
475 select SYS_SUPPORTS_BIG_ENDIAN
476 select SYS_SUPPORTS_LITTLE_ENDIAN
477 select SYS_SUPPORTS_SMARTMIPS
478 select SYS_SUPPORTS_MICROMIPS
479 select SYS_SUPPORTS_MIPS16
480 select USB_EHCI_BIG_ENDIAN_DESC
481 select USB_EHCI_BIG_ENDIAN_MMIO
484 This enables support for the MIPS Technologies SEAD3 evaluation
488 bool "NEC EMMA2RH Mark-eins board"
492 This enables support for the NEC Electronics Mark-eins boards.
495 bool "NEC VR4100 series based machines"
498 select SYS_HAS_CPU_VR41XX
499 select SYS_SUPPORTS_MIPS16
500 select ARCH_REQUIRE_GPIOLIB
503 bool "NXP STB220 board"
506 Support for NXP Semiconductors STB220 Development Board.
513 Support for NXP Semiconductors STB225 Development Board.
516 bool "PMC-Sierra MSP chipsets"
519 select DMA_NONCOHERENT
521 select NO_EXCEPT_FILL
523 select SYS_HAS_CPU_MIPS32_R1
524 select SYS_HAS_CPU_MIPS32_R2
525 select SYS_SUPPORTS_32BIT_KERNEL
526 select SYS_SUPPORTS_BIG_ENDIAN
527 select SYS_SUPPORTS_MIPS16
530 select SERIAL_8250_CONSOLE
531 select USB_EHCI_BIG_ENDIAN_MMIO
532 select USB_EHCI_BIG_ENDIAN_DESC
534 This adds support for the PMC-Sierra family of Multi-Service
535 Processor System-On-A-Chips. These parts include a number
536 of integrated peripherals, interfaces and DSPs in addition to
537 a variety of MIPS cores.
540 bool "Ralink based machines"
544 select DMA_NONCOHERENT
547 select SYS_HAS_CPU_MIPS32_R1
548 select SYS_HAS_CPU_MIPS32_R2
549 select SYS_SUPPORTS_32BIT_KERNEL
550 select SYS_SUPPORTS_LITTLE_ENDIAN
551 select SYS_SUPPORTS_MIPS16
552 select SYS_HAS_EARLY_PRINTK
553 select HAVE_MACH_CLKDEV
555 select ARCH_HAS_RESET_CONTROLLER
556 select RESET_CONTROLLER
559 bool "SGI IP22 (Indy/Indigo2)"
565 select DEFAULT_SGI_PARTITION
566 select DMA_NONCOHERENT
570 select IP22_CPU_SCACHE
572 select GENERIC_ISA_DMA_SUPPORT_BROKEN
574 select SGI_HAS_INDYDOG
580 select SYS_HAS_CPU_R4X00
581 select SYS_HAS_CPU_R5000
583 # Disable EARLY_PRINTK for now since it leads to overwritten prom
584 # memory during early boot on some machines.
586 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
587 # for a more details discussion
589 # select SYS_HAS_EARLY_PRINTK
590 select SYS_SUPPORTS_32BIT_KERNEL
591 select SYS_SUPPORTS_64BIT_KERNEL
592 select SYS_SUPPORTS_BIG_ENDIAN
593 select MIPS_L1_CACHE_SHIFT_7
595 This are the SGI Indy, Challenge S and Indigo2, as well as certain
596 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
597 that runs on these, say Y here.
600 bool "SGI IP27 (Origin200/2000)"
604 select DEFAULT_SGI_PARTITION
606 select SYS_HAS_EARLY_PRINTK
608 select NR_CPUS_DEFAULT_64
609 select SYS_HAS_CPU_R10000
610 select SYS_SUPPORTS_64BIT_KERNEL
611 select SYS_SUPPORTS_BIG_ENDIAN
612 select SYS_SUPPORTS_NUMA
613 select SYS_SUPPORTS_SMP
614 select MIPS_L1_CACHE_SHIFT_7
616 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
617 workstations. To compile a Linux kernel that runs on these, say Y
621 bool "SGI IP28 (Indigo2 R10k)"
627 select DEFAULT_SGI_PARTITION
628 select DMA_NONCOHERENT
629 select GENERIC_ISA_DMA_SUPPORT_BROKEN
635 select SGI_HAS_INDYDOG
641 select SYS_HAS_CPU_R10000
643 # Disable EARLY_PRINTK for now since it leads to overwritten prom
644 # memory during early boot on some machines.
646 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
647 # for a more details discussion
649 # select SYS_HAS_EARLY_PRINTK
650 select SYS_SUPPORTS_64BIT_KERNEL
651 select SYS_SUPPORTS_BIG_ENDIAN
652 select MIPS_L1_CACHE_SHIFT_7
654 This is the SGI Indigo2 with R10000 processor. To compile a Linux
655 kernel that runs on these, say Y here.
664 select DMA_NONCOHERENT
667 select R5000_CPU_SCACHE
668 select RM7000_CPU_SCACHE
669 select SYS_HAS_CPU_R5000
670 select SYS_HAS_CPU_R10000 if BROKEN
671 select SYS_HAS_CPU_RM7000
672 select SYS_HAS_CPU_NEVADA
673 select SYS_SUPPORTS_64BIT_KERNEL
674 select SYS_SUPPORTS_BIG_ENDIAN
676 If you want this kernel to run on SGI O2 workstation, say Y here.
679 bool "Sibyte BCM91120C-CRhine"
682 select SIBYTE_BCM1120
684 select SYS_HAS_CPU_SB1
685 select SYS_SUPPORTS_BIG_ENDIAN
686 select SYS_SUPPORTS_LITTLE_ENDIAN
689 bool "Sibyte BCM91120x-Carmel"
692 select SIBYTE_BCM1120
694 select SYS_HAS_CPU_SB1
695 select SYS_SUPPORTS_BIG_ENDIAN
696 select SYS_SUPPORTS_LITTLE_ENDIAN
699 bool "Sibyte BCM91125C-CRhone"
702 select SIBYTE_BCM1125
704 select SYS_HAS_CPU_SB1
705 select SYS_SUPPORTS_BIG_ENDIAN
706 select SYS_SUPPORTS_HIGHMEM
707 select SYS_SUPPORTS_LITTLE_ENDIAN
710 bool "Sibyte BCM91125E-Rhone"
713 select SIBYTE_BCM1125H
715 select SYS_HAS_CPU_SB1
716 select SYS_SUPPORTS_BIG_ENDIAN
717 select SYS_SUPPORTS_LITTLE_ENDIAN
720 bool "Sibyte BCM91250A-SWARM"
723 select HAVE_PATA_PLATFORM
726 select SYS_HAS_CPU_SB1
727 select SYS_SUPPORTS_BIG_ENDIAN
728 select SYS_SUPPORTS_HIGHMEM
729 select SYS_SUPPORTS_LITTLE_ENDIAN
730 select ZONE_DMA32 if 64BIT
732 config SIBYTE_LITTLESUR
733 bool "Sibyte BCM91250C2-LittleSur"
736 select HAVE_PATA_PLATFORM
739 select SYS_HAS_CPU_SB1
740 select SYS_SUPPORTS_BIG_ENDIAN
741 select SYS_SUPPORTS_HIGHMEM
742 select SYS_SUPPORTS_LITTLE_ENDIAN
744 config SIBYTE_SENTOSA
745 bool "Sibyte BCM91250E-Sentosa"
750 select SYS_HAS_CPU_SB1
751 select SYS_SUPPORTS_BIG_ENDIAN
752 select SYS_SUPPORTS_LITTLE_ENDIAN
755 bool "Sibyte BCM91480B-BigSur"
758 select NR_CPUS_DEFAULT_4
759 select SIBYTE_BCM1x80
761 select SYS_HAS_CPU_SB1
762 select SYS_SUPPORTS_BIG_ENDIAN
763 select SYS_SUPPORTS_HIGHMEM
764 select SYS_SUPPORTS_LITTLE_ENDIAN
765 select ZONE_DMA32 if 64BIT
768 bool "SNI RM200/300/400"
769 select FW_ARC if CPU_LITTLE_ENDIAN
770 select FW_ARC32 if CPU_LITTLE_ENDIAN
771 select FW_SNIPROM if CPU_BIG_ENDIAN
772 select ARCH_MAY_HAVE_PC_FDC
776 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
777 select DMA_NONCOHERENT
778 select GENERIC_ISA_DMA
779 select HAVE_PCSPKR_PLATFORM
786 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
787 select SYS_HAS_CPU_R4X00
788 select SYS_HAS_CPU_R5000
789 select SYS_HAS_CPU_R10000
790 select R5000_CPU_SCACHE
791 select SYS_HAS_EARLY_PRINTK
792 select SYS_SUPPORTS_32BIT_KERNEL
793 select SYS_SUPPORTS_64BIT_KERNEL
794 select SYS_SUPPORTS_BIG_ENDIAN
795 select SYS_SUPPORTS_HIGHMEM
796 select SYS_SUPPORTS_LITTLE_ENDIAN
798 The SNI RM200/300/400 are MIPS-based machines manufactured by
799 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
800 Technology and now in turn merged with Fujitsu. Say Y here to
801 support this machine type.
804 bool "Toshiba TX39 series based machines"
807 bool "Toshiba TX49 series based machines"
809 config MIKROTIK_RB532
810 bool "Mikrotik RB532 boards"
813 select DMA_NONCOHERENT
816 select SYS_HAS_CPU_MIPS32_R1
817 select SYS_SUPPORTS_32BIT_KERNEL
818 select SYS_SUPPORTS_LITTLE_ENDIAN
821 select ARCH_REQUIRE_GPIOLIB
822 select MIPS_L1_CACHE_SHIFT_4
824 Support the Mikrotik(tm) RouterBoard 532 series,
825 based on the IDT RC32434 SoC.
827 config CAVIUM_OCTEON_SOC
828 bool "Cavium Networks Octeon SoC based boards"
830 select ARCH_PHYS_ADDR_T_64BIT
832 select SYS_SUPPORTS_64BIT_KERNEL
833 select SYS_SUPPORTS_BIG_ENDIAN
835 select EDAC_ATOMIC_SCRUB
836 select SYS_SUPPORTS_LITTLE_ENDIAN
837 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
838 select SYS_HAS_EARLY_PRINTK
839 select SYS_HAS_CPU_CAVIUM_OCTEON
844 select ARCH_REQUIRE_GPIOLIB
847 select ARCH_SPARSEMEM_ENABLE
848 select SYS_SUPPORTS_SMP
849 select NR_CPUS_DEFAULT_16
851 select MTD_COMPLEX_MAPPINGS
853 This option supports all of the Octeon reference boards from Cavium
854 Networks. It builds a kernel that dynamically determines the Octeon
855 CPU type and supports all known board reference implementations.
856 Some of the supported boards are:
863 Say Y here for most Octeon reference boards.
866 bool "Netlogic XLR/XLS based systems"
869 select SYS_HAS_CPU_XLR
870 select SYS_SUPPORTS_SMP
873 select SYS_SUPPORTS_32BIT_KERNEL
874 select SYS_SUPPORTS_64BIT_KERNEL
875 select ARCH_PHYS_ADDR_T_64BIT
876 select SYS_SUPPORTS_BIG_ENDIAN
877 select SYS_SUPPORTS_HIGHMEM
879 select NR_CPUS_DEFAULT_32
883 select ZONE_DMA32 if 64BIT
885 select SYS_HAS_EARLY_PRINTK
886 select SYS_SUPPORTS_ZBOOT
887 select SYS_SUPPORTS_ZBOOT_UART16550
889 Support for systems based on Netlogic XLR and XLS processors.
890 Say Y here if you have a XLR or XLS based board.
893 bool "Netlogic XLP based systems"
896 select SYS_HAS_CPU_XLP
897 select SYS_SUPPORTS_SMP
899 select SYS_SUPPORTS_32BIT_KERNEL
900 select SYS_SUPPORTS_64BIT_KERNEL
901 select ARCH_PHYS_ADDR_T_64BIT
902 select SYS_SUPPORTS_BIG_ENDIAN
903 select SYS_SUPPORTS_LITTLE_ENDIAN
904 select SYS_SUPPORTS_HIGHMEM
906 select NR_CPUS_DEFAULT_32
910 select ZONE_DMA32 if 64BIT
912 select SYS_HAS_EARLY_PRINTK
914 select SYS_SUPPORTS_ZBOOT
915 select SYS_SUPPORTS_ZBOOT_UART16550
917 This board is based on Netlogic XLP Processor.
918 Say Y here if you have a XLP based board.
921 bool "Para-Virtualized guest system"
925 select SYS_SUPPORTS_64BIT_KERNEL
926 select SYS_SUPPORTS_32BIT_KERNEL
927 select SYS_SUPPORTS_BIG_ENDIAN
928 select SYS_SUPPORTS_SMP
929 select NR_CPUS_DEFAULT_4
930 select SYS_HAS_EARLY_PRINTK
931 select SYS_HAS_CPU_MIPS32_R2
932 select SYS_HAS_CPU_MIPS64_R2
933 select SYS_HAS_CPU_CAVIUM_OCTEON
937 This option supports guest running under ????
941 source "arch/mips/alchemy/Kconfig"
942 source "arch/mips/ath25/Kconfig"
943 source "arch/mips/ath79/Kconfig"
944 source "arch/mips/bcm47xx/Kconfig"
945 source "arch/mips/bcm63xx/Kconfig"
946 source "arch/mips/bmips/Kconfig"
947 source "arch/mips/jazz/Kconfig"
948 source "arch/mips/jz4740/Kconfig"
949 source "arch/mips/lantiq/Kconfig"
950 source "arch/mips/lasat/Kconfig"
951 source "arch/mips/pmcs-msp71xx/Kconfig"
952 source "arch/mips/ralink/Kconfig"
953 source "arch/mips/sgi-ip27/Kconfig"
954 source "arch/mips/sibyte/Kconfig"
955 source "arch/mips/txx9/Kconfig"
956 source "arch/mips/vr41xx/Kconfig"
957 source "arch/mips/cavium-octeon/Kconfig"
958 source "arch/mips/loongson32/Kconfig"
959 source "arch/mips/loongson64/Kconfig"
960 source "arch/mips/netlogic/Kconfig"
961 source "arch/mips/paravirt/Kconfig"
965 config RWSEM_GENERIC_SPINLOCK
969 config RWSEM_XCHGADD_ALGORITHM
972 config ARCH_HAS_ILOG2_U32
976 config ARCH_HAS_ILOG2_U64
980 config GENERIC_HWEIGHT
984 config GENERIC_CALIBRATE_DELAY
988 config SCHED_OMIT_FRAME_POINTER
993 # Select some configuration options automatically based on user selections.
998 config ARCH_MAY_HAVE_PC_FDC
1035 select ARCH_REQUIRE_GPIOLIB
1041 config ARCH_DMA_ADDR_T_64BIT
1042 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1044 config DMA_MAYBE_COHERENT
1045 select DMA_NONCOHERENT
1051 config DMA_NONCOHERENT
1053 select NEED_DMA_MAP_STATE
1055 config NEED_DMA_MAP_STATE
1058 config SYS_HAS_EARLY_PRINTK
1062 bool "Support for hot-pluggable CPUs"
1063 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
1065 Say Y here to allow turning CPUs off and on. CPUs can be
1066 controlled through /sys/devices/system/cpu.
1067 (Note: power management support will enable this option
1068 automatically on SMP systems. )
1069 Say N if you want to disable CPU hotplug.
1071 config SYS_SUPPORTS_HOTPLUG_CPU
1078 config MIPS_BONITO64
1093 config NO_IOPORT_MAP
1099 config GENERIC_ISA_DMA
1101 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1104 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1106 select GENERIC_ISA_DMA
1111 config HOLES_IN_ZONE
1115 # Endianness selection. Sufficiently obscure so many users don't know what to
1116 # answer,so we try hard to limit the available choices. Also the use of a
1117 # choice statement should be more obvious to the user.
1120 prompt "Endianness selection"
1122 Some MIPS machines can be configured for either little or big endian
1123 byte order. These modes require different kernels and a different
1124 Linux distribution. In general there is one preferred byteorder for a
1125 particular system but some systems are just as commonly used in the
1126 one or the other endianness.
1128 config CPU_BIG_ENDIAN
1130 depends on SYS_SUPPORTS_BIG_ENDIAN
1132 config CPU_LITTLE_ENDIAN
1133 bool "Little endian"
1134 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1141 config SYS_SUPPORTS_APM_EMULATION
1144 config SYS_SUPPORTS_BIG_ENDIAN
1147 config SYS_SUPPORTS_LITTLE_ENDIAN
1150 config SYS_SUPPORTS_HUGETLBFS
1152 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1155 config MIPS_HUGE_TLB_SUPPORT
1156 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1173 config PCI_GT64XXX_PCI0
1176 config NO_EXCEPT_FILL
1183 select DMA_NONCOHERENT
1185 select SWAP_IO_SPACE
1186 select SYS_HAS_CPU_R5500
1187 select SYS_SUPPORTS_32BIT_KERNEL
1188 select SYS_SUPPORTS_64BIT_KERNEL
1189 select SYS_SUPPORTS_BIG_ENDIAN
1196 select DMA_NONCOHERENT
1197 select SYS_HAS_CPU_MIPS32_R2
1198 select SYS_SUPPORTS_32BIT_KERNEL
1199 select SYS_SUPPORTS_LITTLE_ENDIAN
1200 select SYS_SUPPORTS_BIG_ENDIAN
1201 select SYS_SUPPORTS_MIPS16
1202 select CPU_MIPSR2_IRQ_VI
1211 config SWAP_IO_SPACE
1214 config SGI_HAS_INDYDOG
1226 config SGI_HAS_ZILOG
1229 config SGI_HAS_I8042
1232 config DEFAULT_SGI_PARTITION
1244 config MIPS_L1_CACHE_SHIFT_4
1247 config MIPS_L1_CACHE_SHIFT_5
1250 config MIPS_L1_CACHE_SHIFT_6
1253 config MIPS_L1_CACHE_SHIFT_7
1256 config MIPS_L1_CACHE_SHIFT
1258 default "7" if MIPS_L1_CACHE_SHIFT_7
1259 default "6" if MIPS_L1_CACHE_SHIFT_6
1260 default "5" if MIPS_L1_CACHE_SHIFT_5
1261 default "4" if MIPS_L1_CACHE_SHIFT_4
1264 config HAVE_STD_PC_SERIAL_PORT
1268 bool "ARC console support"
1269 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1273 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1278 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1287 menu "CPU selection"
1293 config CPU_LOONGSON3
1294 bool "Loongson 3 CPU"
1295 depends on SYS_HAS_CPU_LOONGSON3
1296 select CPU_SUPPORTS_64BIT_KERNEL
1297 select CPU_SUPPORTS_HIGHMEM
1298 select CPU_SUPPORTS_HUGEPAGES
1299 select WEAK_ORDERING
1300 select WEAK_REORDERING_BEYOND_LLSC
1301 select ARCH_REQUIRE_GPIOLIB
1303 The Loongson 3 processor implements the MIPS64R2 instruction
1304 set with many extensions.
1306 config CPU_LOONGSON2E
1308 depends on SYS_HAS_CPU_LOONGSON2E
1309 select CPU_LOONGSON2
1311 The Loongson 2E processor implements the MIPS III instruction set
1312 with many extensions.
1314 It has an internal FPGA northbridge, which is compatible to
1317 config CPU_LOONGSON2F
1319 depends on SYS_HAS_CPU_LOONGSON2F
1320 select CPU_LOONGSON2
1321 select ARCH_REQUIRE_GPIOLIB
1323 The Loongson 2F processor implements the MIPS III instruction set
1324 with many extensions.
1326 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1327 have a similar programming interface with FPGA northbridge used in
1330 config CPU_LOONGSON1B
1332 depends on SYS_HAS_CPU_LOONGSON1B
1333 select CPU_LOONGSON1
1335 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1336 release 2 instruction set.
1338 config CPU_MIPS32_R1
1339 bool "MIPS32 Release 1"
1340 depends on SYS_HAS_CPU_MIPS32_R1
1341 select CPU_HAS_PREFETCH
1342 select CPU_SUPPORTS_32BIT_KERNEL
1343 select CPU_SUPPORTS_HIGHMEM
1345 Choose this option to build a kernel for release 1 or later of the
1346 MIPS32 architecture. Most modern embedded systems with a 32-bit
1347 MIPS processor are based on a MIPS32 processor. If you know the
1348 specific type of processor in your system, choose those that one
1349 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1350 Release 2 of the MIPS32 architecture is available since several
1351 years so chances are you even have a MIPS32 Release 2 processor
1352 in which case you should choose CPU_MIPS32_R2 instead for better
1355 config CPU_MIPS32_R2
1356 bool "MIPS32 Release 2"
1357 depends on SYS_HAS_CPU_MIPS32_R2
1358 select CPU_HAS_PREFETCH
1359 select CPU_SUPPORTS_32BIT_KERNEL
1360 select CPU_SUPPORTS_HIGHMEM
1361 select CPU_SUPPORTS_MSA
1364 Choose this option to build a kernel for release 2 or later of the
1365 MIPS32 architecture. Most modern embedded systems with a 32-bit
1366 MIPS processor are based on a MIPS32 processor. If you know the
1367 specific type of processor in your system, choose those that one
1368 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1370 config CPU_MIPS32_R6
1371 bool "MIPS32 Release 6 (EXPERIMENTAL)"
1372 depends on SYS_HAS_CPU_MIPS32_R6
1373 select CPU_HAS_PREFETCH
1374 select CPU_SUPPORTS_32BIT_KERNEL
1375 select CPU_SUPPORTS_HIGHMEM
1376 select CPU_SUPPORTS_MSA
1379 select MIPS_O32_FP64_SUPPORT
1381 Choose this option to build a kernel for release 6 or later of the
1382 MIPS32 architecture. New MIPS processors, starting with the Warrior
1383 family, are based on a MIPS32r6 processor. If you own an older
1384 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1386 config CPU_MIPS64_R1
1387 bool "MIPS64 Release 1"
1388 depends on SYS_HAS_CPU_MIPS64_R1
1389 select CPU_HAS_PREFETCH
1390 select CPU_SUPPORTS_32BIT_KERNEL
1391 select CPU_SUPPORTS_64BIT_KERNEL
1392 select CPU_SUPPORTS_HIGHMEM
1393 select CPU_SUPPORTS_HUGEPAGES
1395 Choose this option to build a kernel for release 1 or later of the
1396 MIPS64 architecture. Many modern embedded systems with a 64-bit
1397 MIPS processor are based on a MIPS64 processor. If you know the
1398 specific type of processor in your system, choose those that one
1399 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1400 Release 2 of the MIPS64 architecture is available since several
1401 years so chances are you even have a MIPS64 Release 2 processor
1402 in which case you should choose CPU_MIPS64_R2 instead for better
1405 config CPU_MIPS64_R2
1406 bool "MIPS64 Release 2"
1407 depends on SYS_HAS_CPU_MIPS64_R2
1408 select CPU_HAS_PREFETCH
1409 select CPU_SUPPORTS_32BIT_KERNEL
1410 select CPU_SUPPORTS_64BIT_KERNEL
1411 select CPU_SUPPORTS_HIGHMEM
1412 select CPU_SUPPORTS_HUGEPAGES
1413 select CPU_SUPPORTS_MSA
1415 Choose this option to build a kernel for release 2 or later of the
1416 MIPS64 architecture. Many modern embedded systems with a 64-bit
1417 MIPS processor are based on a MIPS64 processor. If you know the
1418 specific type of processor in your system, choose those that one
1419 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1421 config CPU_MIPS64_R6
1422 bool "MIPS64 Release 6 (EXPERIMENTAL)"
1423 depends on SYS_HAS_CPU_MIPS64_R6
1424 select CPU_HAS_PREFETCH
1425 select CPU_SUPPORTS_32BIT_KERNEL
1426 select CPU_SUPPORTS_64BIT_KERNEL
1427 select CPU_SUPPORTS_HIGHMEM
1428 select CPU_SUPPORTS_MSA
1430 select MIPS_O32_FP64_SUPPORT if MIPS32_O32
1432 Choose this option to build a kernel for release 6 or later of the
1433 MIPS64 architecture. New MIPS processors, starting with the Warrior
1434 family, are based on a MIPS64r6 processor. If you own an older
1435 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1439 depends on SYS_HAS_CPU_R3000
1441 select CPU_SUPPORTS_32BIT_KERNEL
1442 select CPU_SUPPORTS_HIGHMEM
1444 Please make sure to pick the right CPU type. Linux/MIPS is not
1445 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1446 *not* work on R4000 machines and vice versa. However, since most
1447 of the supported machines have an R4000 (or similar) CPU, R4x00
1448 might be a safe bet. If the resulting kernel does not work,
1449 try to recompile with R3000.
1453 depends on SYS_HAS_CPU_TX39XX
1454 select CPU_SUPPORTS_32BIT_KERNEL
1458 depends on SYS_HAS_CPU_VR41XX
1459 select CPU_SUPPORTS_32BIT_KERNEL
1460 select CPU_SUPPORTS_64BIT_KERNEL
1462 The options selects support for the NEC VR4100 series of processors.
1463 Only choose this option if you have one of these processors as a
1464 kernel built with this option will not run on any other type of
1465 processor or vice versa.
1469 depends on SYS_HAS_CPU_R4300
1470 select CPU_SUPPORTS_32BIT_KERNEL
1471 select CPU_SUPPORTS_64BIT_KERNEL
1473 MIPS Technologies R4300-series processors.
1477 depends on SYS_HAS_CPU_R4X00
1478 select CPU_SUPPORTS_32BIT_KERNEL
1479 select CPU_SUPPORTS_64BIT_KERNEL
1480 select CPU_SUPPORTS_HUGEPAGES
1482 MIPS Technologies R4000-series processors other than 4300, including
1483 the R4000, R4400, R4600, and 4700.
1487 depends on SYS_HAS_CPU_TX49XX
1488 select CPU_HAS_PREFETCH
1489 select CPU_SUPPORTS_32BIT_KERNEL
1490 select CPU_SUPPORTS_64BIT_KERNEL
1491 select CPU_SUPPORTS_HUGEPAGES
1495 depends on SYS_HAS_CPU_R5000
1496 select CPU_SUPPORTS_32BIT_KERNEL
1497 select CPU_SUPPORTS_64BIT_KERNEL
1498 select CPU_SUPPORTS_HUGEPAGES
1500 MIPS Technologies R5000-series processors other than the Nevada.
1504 depends on SYS_HAS_CPU_R5432
1505 select CPU_SUPPORTS_32BIT_KERNEL
1506 select CPU_SUPPORTS_64BIT_KERNEL
1507 select CPU_SUPPORTS_HUGEPAGES
1511 depends on SYS_HAS_CPU_R5500
1512 select CPU_SUPPORTS_32BIT_KERNEL
1513 select CPU_SUPPORTS_64BIT_KERNEL
1514 select CPU_SUPPORTS_HUGEPAGES
1516 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1521 depends on SYS_HAS_CPU_R6000
1522 select CPU_SUPPORTS_32BIT_KERNEL
1524 MIPS Technologies R6000 and R6000A series processors. Note these
1525 processors are extremely rare and the support for them is incomplete.
1529 depends on SYS_HAS_CPU_NEVADA
1530 select CPU_SUPPORTS_32BIT_KERNEL
1531 select CPU_SUPPORTS_64BIT_KERNEL
1532 select CPU_SUPPORTS_HUGEPAGES
1534 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1538 depends on SYS_HAS_CPU_R8000
1539 select CPU_HAS_PREFETCH
1540 select CPU_SUPPORTS_64BIT_KERNEL
1542 MIPS Technologies R8000 processors. Note these processors are
1543 uncommon and the support for them is incomplete.
1547 depends on SYS_HAS_CPU_R10000
1548 select CPU_HAS_PREFETCH
1549 select CPU_SUPPORTS_32BIT_KERNEL
1550 select CPU_SUPPORTS_64BIT_KERNEL
1551 select CPU_SUPPORTS_HIGHMEM
1552 select CPU_SUPPORTS_HUGEPAGES
1554 MIPS Technologies R10000-series processors.
1558 depends on SYS_HAS_CPU_RM7000
1559 select CPU_HAS_PREFETCH
1560 select CPU_SUPPORTS_32BIT_KERNEL
1561 select CPU_SUPPORTS_64BIT_KERNEL
1562 select CPU_SUPPORTS_HIGHMEM
1563 select CPU_SUPPORTS_HUGEPAGES
1567 depends on SYS_HAS_CPU_SB1
1568 select CPU_SUPPORTS_32BIT_KERNEL
1569 select CPU_SUPPORTS_64BIT_KERNEL
1570 select CPU_SUPPORTS_HIGHMEM
1571 select CPU_SUPPORTS_HUGEPAGES
1572 select WEAK_ORDERING
1574 config CPU_CAVIUM_OCTEON
1575 bool "Cavium Octeon processor"
1576 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1577 select CPU_HAS_PREFETCH
1578 select CPU_SUPPORTS_64BIT_KERNEL
1579 select WEAK_ORDERING
1580 select CPU_SUPPORTS_HIGHMEM
1581 select CPU_SUPPORTS_HUGEPAGES
1582 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1583 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1584 select MIPS_L1_CACHE_SHIFT_7
1586 The Cavium Octeon processor is a highly integrated chip containing
1587 many ethernet hardware widgets for networking tasks. The processor
1588 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1589 Full details can be found at http://www.caviumnetworks.com.
1592 bool "Broadcom BMIPS"
1593 depends on SYS_HAS_CPU_BMIPS
1595 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1596 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1597 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1598 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1599 select CPU_SUPPORTS_32BIT_KERNEL
1600 select DMA_NONCOHERENT
1602 select SWAP_IO_SPACE
1603 select WEAK_ORDERING
1604 select CPU_SUPPORTS_HIGHMEM
1605 select CPU_HAS_PREFETCH
1607 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1610 bool "Netlogic XLR SoC"
1611 depends on SYS_HAS_CPU_XLR
1612 select CPU_SUPPORTS_32BIT_KERNEL
1613 select CPU_SUPPORTS_64BIT_KERNEL
1614 select CPU_SUPPORTS_HIGHMEM
1615 select CPU_SUPPORTS_HUGEPAGES
1616 select WEAK_ORDERING
1617 select WEAK_REORDERING_BEYOND_LLSC
1619 Netlogic Microsystems XLR/XLS processors.
1622 bool "Netlogic XLP SoC"
1623 depends on SYS_HAS_CPU_XLP
1624 select CPU_SUPPORTS_32BIT_KERNEL
1625 select CPU_SUPPORTS_64BIT_KERNEL
1626 select CPU_SUPPORTS_HIGHMEM
1627 select WEAK_ORDERING
1628 select WEAK_REORDERING_BEYOND_LLSC
1629 select CPU_HAS_PREFETCH
1631 select CPU_SUPPORTS_HUGEPAGES
1633 Netlogic Microsystems XLP processors.
1636 config CPU_MIPS32_3_5_FEATURES
1637 bool "MIPS32 Release 3.5 Features"
1638 depends on SYS_HAS_CPU_MIPS32_R3_5
1639 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1641 Choose this option to build a kernel for release 2 or later of the
1642 MIPS32 architecture including features from the 3.5 release such as
1643 support for Enhanced Virtual Addressing (EVA).
1645 config CPU_MIPS32_3_5_EVA
1646 bool "Enhanced Virtual Addressing (EVA)"
1647 depends on CPU_MIPS32_3_5_FEATURES
1651 Choose this option if you want to enable the Enhanced Virtual
1652 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1653 One of its primary benefits is an increase in the maximum size
1654 of lowmem (up to 3GB). If unsure, say 'N' here.
1656 config CPU_MIPS32_R5_FEATURES
1657 bool "MIPS32 Release 5 Features"
1658 depends on SYS_HAS_CPU_MIPS32_R5
1659 depends on CPU_MIPS32_R2
1661 Choose this option to build a kernel for release 2 or later of the
1662 MIPS32 architecture including features from release 5 such as
1663 support for Extended Physical Addressing (XPA).
1665 config CPU_MIPS32_R5_XPA
1666 bool "Extended Physical Addressing (XPA)"
1667 depends on CPU_MIPS32_R5_FEATURES
1669 depends on !PAGE_SIZE_4KB
1670 depends on SYS_SUPPORTS_HIGHMEM
1673 select ARCH_PHYS_ADDR_T_64BIT
1676 Choose this option if you want to enable the Extended Physical
1677 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1678 benefit is to increase physical addressing equal to or greater
1679 than 40 bits. Note that this has the side effect of turning on
1680 64-bit addressing which in turn makes the PTEs 64-bit in size.
1681 If unsure, say 'N' here.
1684 config CPU_NOP_WORKAROUNDS
1687 config CPU_JUMP_WORKAROUNDS
1690 config CPU_LOONGSON2F_WORKAROUNDS
1691 bool "Loongson 2F Workarounds"
1693 select CPU_NOP_WORKAROUNDS
1694 select CPU_JUMP_WORKAROUNDS
1696 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1697 require workarounds. Without workarounds the system may hang
1698 unexpectedly. For more information please refer to the gas
1699 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1701 Loongson 2F03 and later have fixed these issues and no workarounds
1702 are needed. The workarounds have no significant side effect on them
1703 but may decrease the performance of the system so this option should
1704 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1707 If unsure, please say Y.
1708 endif # CPU_LOONGSON2F
1710 config SYS_SUPPORTS_ZBOOT
1712 select HAVE_KERNEL_GZIP
1713 select HAVE_KERNEL_BZIP2
1714 select HAVE_KERNEL_LZ4
1715 select HAVE_KERNEL_LZMA
1716 select HAVE_KERNEL_LZO
1717 select HAVE_KERNEL_XZ
1719 config SYS_SUPPORTS_ZBOOT_UART16550
1721 select SYS_SUPPORTS_ZBOOT
1723 config CPU_LOONGSON2
1725 select CPU_SUPPORTS_32BIT_KERNEL
1726 select CPU_SUPPORTS_64BIT_KERNEL
1727 select CPU_SUPPORTS_HIGHMEM
1728 select CPU_SUPPORTS_HUGEPAGES
1730 config CPU_LOONGSON1
1734 select CPU_HAS_PREFETCH
1735 select CPU_SUPPORTS_32BIT_KERNEL
1736 select CPU_SUPPORTS_HIGHMEM
1737 select CPU_SUPPORTS_CPUFREQ
1739 config CPU_BMIPS32_3300
1740 select SMP_UP if SMP
1743 config CPU_BMIPS4350
1745 select SYS_SUPPORTS_SMP
1746 select SYS_SUPPORTS_HOTPLUG_CPU
1748 config CPU_BMIPS4380
1750 select MIPS_L1_CACHE_SHIFT_6
1751 select SYS_SUPPORTS_SMP
1752 select SYS_SUPPORTS_HOTPLUG_CPU
1754 config CPU_BMIPS5000
1756 select MIPS_CPU_SCACHE
1757 select MIPS_L1_CACHE_SHIFT_7
1758 select SYS_SUPPORTS_SMP
1759 select SYS_SUPPORTS_HOTPLUG_CPU
1761 config SYS_HAS_CPU_LOONGSON3
1763 select CPU_SUPPORTS_CPUFREQ
1765 config SYS_HAS_CPU_LOONGSON2E
1768 config SYS_HAS_CPU_LOONGSON2F
1770 select CPU_SUPPORTS_CPUFREQ
1771 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1772 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1774 config SYS_HAS_CPU_LOONGSON1B
1777 config SYS_HAS_CPU_MIPS32_R1
1780 config SYS_HAS_CPU_MIPS32_R2
1783 config SYS_HAS_CPU_MIPS32_R3_5
1786 config SYS_HAS_CPU_MIPS32_R5
1789 config SYS_HAS_CPU_MIPS32_R6
1792 config SYS_HAS_CPU_MIPS64_R1
1795 config SYS_HAS_CPU_MIPS64_R2
1798 config SYS_HAS_CPU_MIPS64_R6
1801 config SYS_HAS_CPU_R3000
1804 config SYS_HAS_CPU_TX39XX
1807 config SYS_HAS_CPU_VR41XX
1810 config SYS_HAS_CPU_R4300
1813 config SYS_HAS_CPU_R4X00
1816 config SYS_HAS_CPU_TX49XX
1819 config SYS_HAS_CPU_R5000
1822 config SYS_HAS_CPU_R5432
1825 config SYS_HAS_CPU_R5500
1828 config SYS_HAS_CPU_R6000
1831 config SYS_HAS_CPU_NEVADA
1834 config SYS_HAS_CPU_R8000
1837 config SYS_HAS_CPU_R10000
1840 config SYS_HAS_CPU_RM7000
1843 config SYS_HAS_CPU_SB1
1846 config SYS_HAS_CPU_CAVIUM_OCTEON
1849 config SYS_HAS_CPU_BMIPS
1852 config SYS_HAS_CPU_BMIPS32_3300
1854 select SYS_HAS_CPU_BMIPS
1856 config SYS_HAS_CPU_BMIPS4350
1858 select SYS_HAS_CPU_BMIPS
1860 config SYS_HAS_CPU_BMIPS4380
1862 select SYS_HAS_CPU_BMIPS
1864 config SYS_HAS_CPU_BMIPS5000
1866 select SYS_HAS_CPU_BMIPS
1868 config SYS_HAS_CPU_XLR
1871 config SYS_HAS_CPU_XLP
1874 config MIPS_MALTA_PM
1875 depends on MIPS_MALTA
1881 # CPU may reorder R->R, R->W, W->R, W->W
1882 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1884 config WEAK_ORDERING
1888 # CPU may reorder reads and writes beyond LL/SC
1889 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1891 config WEAK_REORDERING_BEYOND_LLSC
1896 # These two indicate any level of the MIPS32 and MIPS64 architecture
1900 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1904 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1907 # These two indicate the revision of the architecture, either Release 1 or Release 2
1911 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1915 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1920 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1929 config SYS_SUPPORTS_32BIT_KERNEL
1931 config SYS_SUPPORTS_64BIT_KERNEL
1933 config CPU_SUPPORTS_32BIT_KERNEL
1935 config CPU_SUPPORTS_64BIT_KERNEL
1937 config CPU_SUPPORTS_CPUFREQ
1939 config CPU_SUPPORTS_ADDRWINCFG
1941 config CPU_SUPPORTS_HUGEPAGES
1943 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1945 config MIPS_PGD_C0_CONTEXT
1947 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1950 # Set to y for ptrace access to watch registers.
1952 config HARDWARE_WATCHPOINTS
1954 default y if CPU_MIPSR1 || CPU_MIPSR2
1959 prompt "Kernel code model"
1961 You should only select this option if you have a workload that
1962 actually benefits from 64-bit processing or if your machine has
1963 large memory. You will only be presented a single option in this
1964 menu if your system does not support both 32-bit and 64-bit kernels.
1967 bool "32-bit kernel"
1968 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1971 Select this option if you want to build a 32-bit kernel.
1973 bool "64-bit kernel"
1974 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1976 Select this option if you want to build a 64-bit kernel.
1981 bool "KVM Guest Kernel"
1982 depends on BROKEN_ON_SMP
1984 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1986 config KVM_GUEST_TIMER_FREQ
1987 int "Count/Compare Timer Frequency (MHz)"
1988 depends on KVM_GUEST
1991 Set this to non-zero if building a guest kernel for KVM to skip RTC
1992 emulation when determining guest CPU Frequency. Instead, the guest's
1993 timer frequency is specified directly.
1996 prompt "Kernel page size"
1997 default PAGE_SIZE_4KB
1999 config PAGE_SIZE_4KB
2001 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2003 This option select the standard 4kB Linux page size. On some
2004 R3000-family processors this is the only available page size. Using
2005 4kB page size will minimize memory consumption and is therefore
2006 recommended for low memory systems.
2008 config PAGE_SIZE_8KB
2010 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2012 Using 8kB page size will result in higher performance kernel at
2013 the price of higher memory consumption. This option is available
2014 only on R8000 and cnMIPS processors. Note that you will need a
2015 suitable Linux distribution to support this.
2017 config PAGE_SIZE_16KB
2019 depends on !CPU_R3000 && !CPU_TX39XX
2021 Using 16kB page size will result in higher performance kernel at
2022 the price of higher memory consumption. This option is available on
2023 all non-R3000 family processors. Note that you will need a suitable
2024 Linux distribution to support this.
2026 config PAGE_SIZE_32KB
2028 depends on CPU_CAVIUM_OCTEON
2030 Using 32kB page size will result in higher performance kernel at
2031 the price of higher memory consumption. This option is available
2032 only on cnMIPS cores. Note that you will need a suitable Linux
2033 distribution to support this.
2035 config PAGE_SIZE_64KB
2037 depends on !CPU_R3000 && !CPU_TX39XX
2039 Using 64kB page size will result in higher performance kernel at
2040 the price of higher memory consumption. This option is available on
2041 all non-R3000 family processor. Not that at the time of this
2042 writing this option is still high experimental.
2046 config FORCE_MAX_ZONEORDER
2047 int "Maximum zone order"
2048 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2049 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2050 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2051 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2052 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2053 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2057 The kernel memory allocator divides physically contiguous memory
2058 blocks into "zones", where each zone is a power of two number of
2059 pages. This option selects the largest power of two that the kernel
2060 keeps in the memory allocator. If you need to allocate very large
2061 blocks of physically contiguous memory, then you may need to
2062 increase this value.
2064 This config option is actually maximum order plus one. For example,
2065 a value of 11 means that the largest free memory block is 2^10 pages.
2067 The page size is not necessarily 4KB. Keep this in mind
2068 when choosing a value for this option.
2073 config IP22_CPU_SCACHE
2078 # Support for a MIPS32 / MIPS64 style S-caches
2080 config MIPS_CPU_SCACHE
2084 config R5000_CPU_SCACHE
2088 config RM7000_CPU_SCACHE
2092 config SIBYTE_DMA_PAGEOPS
2093 bool "Use DMA to clear/copy pages"
2096 Instead of using the CPU to zero and copy pages, use a Data Mover
2097 channel. These DMA channels are otherwise unused by the standard
2098 SiByte Linux port. Seems to give a small performance benefit.
2100 config CPU_HAS_PREFETCH
2103 config CPU_GENERIC_DUMP_TLB
2105 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2109 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2111 config CPU_R4K_CACHE_TLB
2113 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2116 bool "MIPS MT SMP support (1 TC on each available VPE)"
2117 depends on SYS_SUPPORTS_MULTITHREADING
2118 select CPU_MIPSR2_IRQ_VI
2119 select CPU_MIPSR2_IRQ_EI
2125 select SYS_SUPPORTS_SMP
2126 select SYS_SUPPORTS_SCHED_SMT
2127 select MIPS_PERF_SHARED_TC_COUNTERS
2129 This is a kernel model which is known as SMVP. This is supported
2130 on cores with the MT ASE and uses the available VPEs to implement
2131 virtual processors which supports SMP. This is equivalent to the
2132 Intel Hyperthreading feature. For further information go to
2133 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2139 bool "SMT (multithreading) scheduler support"
2140 depends on SYS_SUPPORTS_SCHED_SMT
2143 SMT scheduler support improves the CPU scheduler's decision making
2144 when dealing with MIPS MT enabled cores at a cost of slightly
2145 increased overhead in some places. If unsure say N here.
2147 config SYS_SUPPORTS_SCHED_SMT
2150 config SYS_SUPPORTS_MULTITHREADING
2153 config MIPS_MT_FPAFF
2154 bool "Dynamic FPU affinity for FP-intensive threads"
2156 depends on MIPS_MT_SMP
2158 config MIPSR2_TO_R6_EMULATOR
2159 bool "MIPS R2-to-R6 emulator"
2160 depends on CPU_MIPSR6 && !SMP
2163 Choose this option if you want to run non-R6 MIPS userland code.
2164 Even if you say 'Y' here, the emulator will still be disabled by
2165 default. You can enable it using the 'mipsr2emu' kernel option.
2166 The only reason this is a build-time option is to save ~14K from the
2168 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2169 depends on SMP && CPU_MIPSR6
2171 config MIPS_VPE_LOADER
2172 bool "VPE loader support."
2173 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2174 select CPU_MIPSR2_IRQ_VI
2175 select CPU_MIPSR2_IRQ_EI
2178 Includes a loader for loading an elf relocatable object
2179 onto another VPE and running it.
2181 config MIPS_VPE_LOADER_CMP
2184 depends on MIPS_VPE_LOADER && MIPS_CMP
2186 config MIPS_VPE_LOADER_MT
2189 depends on MIPS_VPE_LOADER && !MIPS_CMP
2191 config MIPS_VPE_LOADER_TOM
2192 bool "Load VPE program into memory hidden from linux"
2193 depends on MIPS_VPE_LOADER
2196 The loader can use memory that is present but has been hidden from
2197 Linux using the kernel command line option "mem=xxMB". It's up to
2198 you to ensure the amount you put in the option and the space your
2199 program requires is less or equal to the amount physically present.
2201 config MIPS_VPE_APSP_API
2202 bool "Enable support for AP/SP API (RTLX)"
2203 depends on MIPS_VPE_LOADER
2206 config MIPS_VPE_APSP_API_CMP
2209 depends on MIPS_VPE_APSP_API && MIPS_CMP
2211 config MIPS_VPE_APSP_API_MT
2214 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2217 bool "MIPS CMP framework support (DEPRECATED)"
2218 depends on SYS_SUPPORTS_MIPS_CMP
2222 select SYS_SUPPORTS_SMP
2223 select WEAK_ORDERING
2226 Select this if you are using a bootloader which implements the "CMP
2227 framework" protocol (ie. YAMON) and want your kernel to make use of
2228 its ability to start secondary CPUs.
2230 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2234 bool "MIPS Coherent Processing System support"
2235 depends on SYS_SUPPORTS_MIPS_CPS
2238 select MIPS_CPS_PM if HOTPLUG_CPU
2241 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2242 select SYS_SUPPORTS_HOTPLUG_CPU
2243 select SYS_SUPPORTS_SMP
2244 select WEAK_ORDERING
2246 Select this if you wish to run an SMP kernel across multiple cores
2247 within a MIPS Coherent Processing System. When this option is
2248 enabled the kernel will probe for other cores and boot them with
2249 no external assistance. It is safe to enable this when hardware
2250 support is unavailable.
2266 config SB1_PASS_2_WORKAROUNDS
2268 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2271 config SB1_PASS_2_1_WORKAROUNDS
2273 depends on CPU_SB1 && CPU_SB1_PASS_2
2277 config ARCH_PHYS_ADDR_T_64BIT
2281 prompt "SmartMIPS or microMIPS ASE support"
2283 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2286 Select this if you want neither microMIPS nor SmartMIPS support
2288 config CPU_HAS_SMARTMIPS
2289 depends on SYS_SUPPORTS_SMARTMIPS
2292 SmartMIPS is a extension of the MIPS32 architecture aimed at
2293 increased security at both hardware and software level for
2294 smartcards. Enabling this option will allow proper use of the
2295 SmartMIPS instructions by Linux applications. However a kernel with
2296 this option will not work on a MIPS core without SmartMIPS core. If
2297 you don't know you probably don't have SmartMIPS and should say N
2300 config CPU_MICROMIPS
2301 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2304 When this option is enabled the kernel will be built using the
2310 bool "Support for the MIPS SIMD Architecture (EXPERIMENTAL)"
2311 depends on CPU_SUPPORTS_MSA
2312 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2314 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2315 and a set of SIMD instructions to operate on them. When this option
2316 is enabled the kernel will support allocating & switching MSA
2317 vector register contexts. If you know that your kernel will only be
2318 running on CPUs which do not support MSA or that your userland will
2319 not be making use of it then you may wish to say N here to reduce
2320 the size & complexity of your kernel.
2331 # Vectored interrupt mode is an R2 feature
2333 config CPU_MIPSR2_IRQ_VI
2337 # Extended interrupt mode is an R2 feature
2339 config CPU_MIPSR2_IRQ_EI
2344 depends on !CPU_R3000
2350 config CPU_DADDI_WORKAROUNDS
2353 config CPU_R4000_WORKAROUNDS
2355 select CPU_R4400_WORKAROUNDS
2357 config CPU_R4400_WORKAROUNDS
2361 # - Highmem only makes sense for the 32-bit kernel.
2362 # - The current highmem code will only work properly on physically indexed
2363 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2364 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2365 # moment we protect the user and offer the highmem option only on machines
2366 # where it's known to be safe. This will not offer highmem on a few systems
2367 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2368 # indexed CPUs but we're playing safe.
2369 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2370 # know they might have memory configurations that could make use of highmem
2374 bool "High Memory Support"
2375 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2377 config CPU_SUPPORTS_HIGHMEM
2380 config SYS_SUPPORTS_HIGHMEM
2383 config SYS_SUPPORTS_SMARTMIPS
2386 config SYS_SUPPORTS_MICROMIPS
2389 config SYS_SUPPORTS_MIPS16
2392 This option must be set if a kernel might be executed on a MIPS16-
2393 enabled CPU even if MIPS16 is not actually being used. In other
2394 words, it makes the kernel MIPS16-tolerant.
2396 config CPU_SUPPORTS_MSA
2399 config ARCH_FLATMEM_ENABLE
2401 depends on !NUMA && !CPU_LOONGSON2
2403 config ARCH_DISCONTIGMEM_ENABLE
2405 default y if SGI_IP27
2407 Say Y to support efficient handling of discontiguous physical memory,
2408 for architectures which are either NUMA (Non-Uniform Memory Access)
2409 or have huge holes in the physical address space for other reasons.
2410 See <file:Documentation/vm/numa> for more.
2412 config ARCH_SPARSEMEM_ENABLE
2414 select SPARSEMEM_STATIC
2418 depends on SYS_SUPPORTS_NUMA
2420 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2421 Access). This option improves performance on systems with more
2422 than two nodes; on two node systems it is generally better to
2423 leave it disabled; on single node systems disable this option
2426 config SYS_SUPPORTS_NUMA
2432 depends on NEED_MULTIPLE_NODES
2434 config HW_PERF_EVENTS
2435 bool "Enable hardware performance counter support for perf events"
2436 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2439 Enable hardware performance counter support for perf events. If
2440 disabled, perf events will use software events only.
2445 bool "Multi-Processing support"
2446 depends on SYS_SUPPORTS_SMP
2448 This enables support for systems with more than one CPU. If you have
2449 a system with only one CPU, say N. If you have a system with more
2450 than one CPU, say Y.
2452 If you say N here, the kernel will run on uni- and multiprocessor
2453 machines, but will use only one CPU of a multiprocessor machine. If
2454 you say Y here, the kernel will run on many, but not all,
2455 uniprocessor machines. On a uniprocessor machine, the kernel
2456 will run faster if you say N here.
2458 People using multiprocessor machines who say Y here should also say
2459 Y to "Enhanced Real Time Clock Support", below.
2461 See also the SMP-HOWTO available at
2462 <http://www.tldp.org/docs.html#howto>.
2464 If you don't know what to do here, say N.
2469 config SYS_SUPPORTS_MIPS_CMP
2472 config SYS_SUPPORTS_MIPS_CPS
2475 config SYS_SUPPORTS_SMP
2478 config NR_CPUS_DEFAULT_4
2481 config NR_CPUS_DEFAULT_8
2484 config NR_CPUS_DEFAULT_16
2487 config NR_CPUS_DEFAULT_32
2490 config NR_CPUS_DEFAULT_64
2494 int "Maximum number of CPUs (2-256)"
2497 default "4" if NR_CPUS_DEFAULT_4
2498 default "8" if NR_CPUS_DEFAULT_8
2499 default "16" if NR_CPUS_DEFAULT_16
2500 default "32" if NR_CPUS_DEFAULT_32
2501 default "64" if NR_CPUS_DEFAULT_64
2503 This allows you to specify the maximum number of CPUs which this
2504 kernel will support. The maximum supported value is 32 for 32-bit
2505 kernel and 64 for 64-bit kernels; the minimum value which makes
2506 sense is 1 for Qemu (useful only for kernel debugging purposes)
2507 and 2 for all others.
2509 This is purely to save memory - each supported CPU adds
2510 approximately eight kilobytes to the kernel image. For best
2511 performance should round up your number of processors to the next
2514 config MIPS_PERF_SHARED_TC_COUNTERS
2518 # Timer Interrupt Frequency Configuration
2522 prompt "Timer frequency"
2525 Allows the configuration of the timer frequency.
2528 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2531 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2534 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2537 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2540 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2543 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2546 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2550 config SYS_SUPPORTS_48HZ
2553 config SYS_SUPPORTS_100HZ
2556 config SYS_SUPPORTS_128HZ
2559 config SYS_SUPPORTS_250HZ
2562 config SYS_SUPPORTS_256HZ
2565 config SYS_SUPPORTS_1000HZ
2568 config SYS_SUPPORTS_1024HZ
2571 config SYS_SUPPORTS_ARBIT_HZ
2573 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2574 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2575 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2576 !SYS_SUPPORTS_1024HZ
2581 default 100 if HZ_100
2582 default 128 if HZ_128
2583 default 250 if HZ_250
2584 default 256 if HZ_256
2585 default 1000 if HZ_1000
2586 default 1024 if HZ_1024
2589 def_bool HIGH_RES_TIMERS
2591 source "kernel/Kconfig.preempt"
2594 bool "Kexec system call"
2596 kexec is a system call that implements the ability to shutdown your
2597 current kernel, and to start another kernel. It is like a reboot
2598 but it is independent of the system firmware. And like a reboot
2599 you can start any kernel with it, not just Linux.
2601 The name comes from the similarity to the exec system call.
2603 It is an ongoing process to be certain the hardware in a machine
2604 is properly shutdown, so do not be surprised if this code does not
2605 initially work for you. As of this writing the exact hardware
2606 interface is strongly in flux, so no good recommendation can be
2610 bool "Kernel crash dumps"
2612 Generate crash dump after being started by kexec.
2613 This should be normally only set in special crash dump kernels
2614 which are loaded in the main kernel with kexec-tools into
2615 a specially reserved region and then later executed after
2616 a crash by kdump/kexec. The crash dump kernel must be compiled
2617 to a memory address not used by the main kernel or firmware using
2620 config PHYSICAL_START
2621 hex "Physical address where the kernel is loaded"
2622 default "0xffffffff84000000" if 64BIT
2623 default "0x84000000" if 32BIT
2624 depends on CRASH_DUMP
2626 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2627 If you plan to use kernel for capturing the crash dump change
2628 this value to start of the reserved region (the "X" value as
2629 specified in the "crashkernel=YM@XM" command line boot parameter
2630 passed to the panic-ed kernel).
2633 bool "Enable seccomp to safely compute untrusted bytecode"
2637 This kernel feature is useful for number crunching applications
2638 that may need to compute untrusted bytecode during their
2639 execution. By using pipes or other transports made available to
2640 the process as file descriptors supporting the read/write
2641 syscalls, it's possible to isolate those applications in
2642 their own address space using seccomp. Once seccomp is
2643 enabled via /proc/<pid>/seccomp, it cannot be disabled
2644 and the task is only allowed to execute a few safe syscalls
2645 defined by each seccomp mode.
2647 If unsure, say Y. Only embedded should say N here.
2649 config MIPS_O32_FP64_SUPPORT
2650 bool "Support for O32 binaries using 64-bit FP (EXPERIMENTAL)"
2651 depends on 32BIT || MIPS32_O32
2653 When this is enabled, the kernel will support use of 64-bit floating
2654 point registers with binaries using the O32 ABI along with the
2655 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2656 32-bit MIPS systems this support is at the cost of increasing the
2657 size and complexity of the compiled FPU emulator. Thus if you are
2658 running a MIPS32 system and know that none of your userland binaries
2659 will require 64-bit floating point, you may wish to reduce the size
2660 of your kernel & potentially improve FP emulation performance by
2663 Although binutils currently supports use of this flag the details
2664 concerning its effect upon the O32 ABI in userland are still being
2665 worked on. In order to avoid userland becoming dependant upon current
2666 behaviour before the details have been finalised, this option should
2667 be considered experimental and only enabled by those working upon
2675 select OF_EARLY_FLATTREE
2682 prompt "Kernel appended dtb support" if OF
2683 default MIPS_NO_APPENDED_DTB
2685 config MIPS_NO_APPENDED_DTB
2688 Do not enable appended dtb support.
2690 config MIPS_RAW_APPENDED_DTB
2693 With this option, the boot code will look for a device tree binary
2694 DTB) appended to raw vmlinux.bin (without decompressor).
2695 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2697 This is meant as a backward compatibility convenience for those
2698 systems with a bootloader that can't be upgraded to accommodate
2699 the documented boot protocol using a device tree.
2701 Beware that there is very little in terms of protection against
2702 this option being confused by leftover garbage in memory that might
2703 look like a DTB header after a reboot if no actual DTB is appended
2704 to vmlinux.bin. Do not leave this option active in a production kernel
2705 if you don't intend to always append a DTB.
2707 config MIPS_ZBOOT_APPENDED_DTB
2709 depends on SYS_SUPPORTS_ZBOOT
2711 With this option, the boot code will look for a device tree binary
2712 DTB) appended to raw vmlinuz.bin (with decompressor).
2713 (e.g. cat vmlinuz.bin <filename>.dtb > vmlinuz_w_dtb).
2715 This is meant as a backward compatibility convenience for those
2716 systems with a bootloader that can't be upgraded to accommodate
2717 the documented boot protocol using a device tree.
2719 Beware that there is very little in terms of protection against
2720 this option being confused by leftover garbage in memory that might
2721 look like a DTB header after a reboot if no actual DTB is appended
2722 to vmlinuz.bin. Do not leave this option active in a production kernel
2723 if you don't intend to always append a DTB.
2728 config LOCKDEP_SUPPORT
2732 config STACKTRACE_SUPPORT
2736 config PGTABLE_LEVELS
2738 default 3 if 64BIT && !PAGE_SIZE_64KB
2741 source "init/Kconfig"
2743 source "kernel/Kconfig.freezer"
2745 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2753 bool "Support for PCI controller"
2754 depends on HW_HAS_PCI
2756 select NO_GENERIC_PCI_IOPORT_MAP
2758 Find out whether you have a PCI motherboard. PCI is the name of a
2759 bus system, i.e. the way the CPU talks to the other stuff inside
2760 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2764 bool "Support for HT-linked PCI"
2766 depends on CPU_LOONGSON3
2770 Loongson family machines use Hyper-Transport bus for inter-core
2771 connection and device connection. The PCI bus is a subordinate
2772 linked at HT. Choose Y for Loongson-3 based machines.
2777 source "drivers/pci/Kconfig"
2779 source "drivers/pci/pcie/Kconfig"
2782 # ISA support is now enabled via select. Too many systems still have the one
2783 # or other ISA chip on the board that users don't know about so don't expect
2784 # users to choose the right thing ...
2791 depends on HW_HAS_EISA
2793 select GENERIC_ISA_DMA
2795 The Extended Industry Standard Architecture (EISA) bus was
2796 developed as an open alternative to the IBM MicroChannel bus.
2798 The EISA bus provided some of the features of the IBM MicroChannel
2799 bus while maintaining backward compatibility with cards made for
2800 the older ISA bus. The EISA bus saw limited use between 1988 and
2801 1995 when it was made obsolete by the PCI bus.
2803 Say Y here if you are building a kernel for an EISA-based machine.
2807 source "drivers/eisa/Kconfig"
2810 bool "TURBOchannel support"
2811 depends on MACH_DECSTATION
2813 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2814 processors. TURBOchannel programming specifications are available
2816 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2818 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2819 Linux driver support status is documented at:
2820 <http://www.linux-mips.org/wiki/DECstation>
2830 select MIPS_EXTERNAL_TIMER
2838 source "drivers/pcmcia/Kconfig"
2840 source "drivers/pci/hotplug/Kconfig"
2843 tristate "RapidIO support"
2847 If you say Y here, the kernel will include drivers and
2848 infrastructure code to support RapidIO interconnect devices.
2850 source "drivers/rapidio/Kconfig"
2854 menu "Executable file formats"
2856 source "fs/Kconfig.binfmt"
2861 config MIPS32_COMPAT
2867 config SYSVIPC_COMPAT
2871 bool "Kernel support for o32 binaries"
2873 select ARCH_WANT_OLD_COMPAT_IPC
2875 select MIPS32_COMPAT
2876 select SYSVIPC_COMPAT if SYSVIPC
2878 Select this option if you want to run o32 binaries. These are pure
2879 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2880 existing binaries are in this format.
2885 bool "Kernel support for n32 binaries"
2888 select MIPS32_COMPAT
2889 select SYSVIPC_COMPAT if SYSVIPC
2891 Select this option if you want to run n32 binaries. These are
2892 64-bit binaries using 32-bit quantities for addressing and certain
2893 data that would normally be 64-bit. They are used in special
2900 default y if MIPS32_O32 || MIPS32_N32
2904 menu "Power management options"
2906 config ARCH_HIBERNATION_POSSIBLE
2908 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2910 config ARCH_SUSPEND_POSSIBLE
2912 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2914 source "kernel/power/Kconfig"
2918 config MIPS_EXTERNAL_TIMER
2921 menu "CPU Power Management"
2923 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2924 source "drivers/cpufreq/Kconfig"
2927 source "drivers/cpuidle/Kconfig"
2931 source "net/Kconfig"
2933 source "drivers/Kconfig"
2935 source "drivers/firmware/Kconfig"
2939 source "arch/mips/Kconfig.debug"
2941 source "security/Kconfig"
2943 source "crypto/Kconfig"
2945 source "lib/Kconfig"
2947 source "arch/mips/kvm/Kconfig"