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
1431 Choose this option to build a kernel for release 6 or later of the
1432 MIPS64 architecture. New MIPS processors, starting with the Warrior
1433 family, are based on a MIPS64r6 processor. If you own an older
1434 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1438 depends on SYS_HAS_CPU_R3000
1440 select CPU_SUPPORTS_32BIT_KERNEL
1441 select CPU_SUPPORTS_HIGHMEM
1443 Please make sure to pick the right CPU type. Linux/MIPS is not
1444 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1445 *not* work on R4000 machines and vice versa. However, since most
1446 of the supported machines have an R4000 (or similar) CPU, R4x00
1447 might be a safe bet. If the resulting kernel does not work,
1448 try to recompile with R3000.
1452 depends on SYS_HAS_CPU_TX39XX
1453 select CPU_SUPPORTS_32BIT_KERNEL
1457 depends on SYS_HAS_CPU_VR41XX
1458 select CPU_SUPPORTS_32BIT_KERNEL
1459 select CPU_SUPPORTS_64BIT_KERNEL
1461 The options selects support for the NEC VR4100 series of processors.
1462 Only choose this option if you have one of these processors as a
1463 kernel built with this option will not run on any other type of
1464 processor or vice versa.
1468 depends on SYS_HAS_CPU_R4300
1469 select CPU_SUPPORTS_32BIT_KERNEL
1470 select CPU_SUPPORTS_64BIT_KERNEL
1472 MIPS Technologies R4300-series processors.
1476 depends on SYS_HAS_CPU_R4X00
1477 select CPU_SUPPORTS_32BIT_KERNEL
1478 select CPU_SUPPORTS_64BIT_KERNEL
1479 select CPU_SUPPORTS_HUGEPAGES
1481 MIPS Technologies R4000-series processors other than 4300, including
1482 the R4000, R4400, R4600, and 4700.
1486 depends on SYS_HAS_CPU_TX49XX
1487 select CPU_HAS_PREFETCH
1488 select CPU_SUPPORTS_32BIT_KERNEL
1489 select CPU_SUPPORTS_64BIT_KERNEL
1490 select CPU_SUPPORTS_HUGEPAGES
1494 depends on SYS_HAS_CPU_R5000
1495 select CPU_SUPPORTS_32BIT_KERNEL
1496 select CPU_SUPPORTS_64BIT_KERNEL
1497 select CPU_SUPPORTS_HUGEPAGES
1499 MIPS Technologies R5000-series processors other than the Nevada.
1503 depends on SYS_HAS_CPU_R5432
1504 select CPU_SUPPORTS_32BIT_KERNEL
1505 select CPU_SUPPORTS_64BIT_KERNEL
1506 select CPU_SUPPORTS_HUGEPAGES
1510 depends on SYS_HAS_CPU_R5500
1511 select CPU_SUPPORTS_32BIT_KERNEL
1512 select CPU_SUPPORTS_64BIT_KERNEL
1513 select CPU_SUPPORTS_HUGEPAGES
1515 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1520 depends on SYS_HAS_CPU_R6000
1521 select CPU_SUPPORTS_32BIT_KERNEL
1523 MIPS Technologies R6000 and R6000A series processors. Note these
1524 processors are extremely rare and the support for them is incomplete.
1528 depends on SYS_HAS_CPU_NEVADA
1529 select CPU_SUPPORTS_32BIT_KERNEL
1530 select CPU_SUPPORTS_64BIT_KERNEL
1531 select CPU_SUPPORTS_HUGEPAGES
1533 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1537 depends on SYS_HAS_CPU_R8000
1538 select CPU_HAS_PREFETCH
1539 select CPU_SUPPORTS_64BIT_KERNEL
1541 MIPS Technologies R8000 processors. Note these processors are
1542 uncommon and the support for them is incomplete.
1546 depends on SYS_HAS_CPU_R10000
1547 select CPU_HAS_PREFETCH
1548 select CPU_SUPPORTS_32BIT_KERNEL
1549 select CPU_SUPPORTS_64BIT_KERNEL
1550 select CPU_SUPPORTS_HIGHMEM
1551 select CPU_SUPPORTS_HUGEPAGES
1553 MIPS Technologies R10000-series processors.
1557 depends on SYS_HAS_CPU_RM7000
1558 select CPU_HAS_PREFETCH
1559 select CPU_SUPPORTS_32BIT_KERNEL
1560 select CPU_SUPPORTS_64BIT_KERNEL
1561 select CPU_SUPPORTS_HIGHMEM
1562 select CPU_SUPPORTS_HUGEPAGES
1566 depends on SYS_HAS_CPU_SB1
1567 select CPU_SUPPORTS_32BIT_KERNEL
1568 select CPU_SUPPORTS_64BIT_KERNEL
1569 select CPU_SUPPORTS_HIGHMEM
1570 select CPU_SUPPORTS_HUGEPAGES
1571 select WEAK_ORDERING
1573 config CPU_CAVIUM_OCTEON
1574 bool "Cavium Octeon processor"
1575 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1576 select CPU_HAS_PREFETCH
1577 select CPU_SUPPORTS_64BIT_KERNEL
1578 select WEAK_ORDERING
1579 select CPU_SUPPORTS_HIGHMEM
1580 select CPU_SUPPORTS_HUGEPAGES
1581 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1582 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1583 select MIPS_L1_CACHE_SHIFT_7
1585 The Cavium Octeon processor is a highly integrated chip containing
1586 many ethernet hardware widgets for networking tasks. The processor
1587 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1588 Full details can be found at http://www.caviumnetworks.com.
1591 bool "Broadcom BMIPS"
1592 depends on SYS_HAS_CPU_BMIPS
1594 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1595 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1596 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1597 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1598 select CPU_SUPPORTS_32BIT_KERNEL
1599 select DMA_NONCOHERENT
1601 select SWAP_IO_SPACE
1602 select WEAK_ORDERING
1603 select CPU_SUPPORTS_HIGHMEM
1604 select CPU_HAS_PREFETCH
1606 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1609 bool "Netlogic XLR SoC"
1610 depends on SYS_HAS_CPU_XLR
1611 select CPU_SUPPORTS_32BIT_KERNEL
1612 select CPU_SUPPORTS_64BIT_KERNEL
1613 select CPU_SUPPORTS_HIGHMEM
1614 select CPU_SUPPORTS_HUGEPAGES
1615 select WEAK_ORDERING
1616 select WEAK_REORDERING_BEYOND_LLSC
1618 Netlogic Microsystems XLR/XLS processors.
1621 bool "Netlogic XLP SoC"
1622 depends on SYS_HAS_CPU_XLP
1623 select CPU_SUPPORTS_32BIT_KERNEL
1624 select CPU_SUPPORTS_64BIT_KERNEL
1625 select CPU_SUPPORTS_HIGHMEM
1626 select WEAK_ORDERING
1627 select WEAK_REORDERING_BEYOND_LLSC
1628 select CPU_HAS_PREFETCH
1630 select CPU_SUPPORTS_HUGEPAGES
1632 Netlogic Microsystems XLP processors.
1635 config CPU_MIPS32_3_5_FEATURES
1636 bool "MIPS32 Release 3.5 Features"
1637 depends on SYS_HAS_CPU_MIPS32_R3_5
1638 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1640 Choose this option to build a kernel for release 2 or later of the
1641 MIPS32 architecture including features from the 3.5 release such as
1642 support for Enhanced Virtual Addressing (EVA).
1644 config CPU_MIPS32_3_5_EVA
1645 bool "Enhanced Virtual Addressing (EVA)"
1646 depends on CPU_MIPS32_3_5_FEATURES
1650 Choose this option if you want to enable the Enhanced Virtual
1651 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1652 One of its primary benefits is an increase in the maximum size
1653 of lowmem (up to 3GB). If unsure, say 'N' here.
1655 config CPU_MIPS32_R5_FEATURES
1656 bool "MIPS32 Release 5 Features"
1657 depends on SYS_HAS_CPU_MIPS32_R5
1658 depends on CPU_MIPS32_R2
1660 Choose this option to build a kernel for release 2 or later of the
1661 MIPS32 architecture including features from release 5 such as
1662 support for Extended Physical Addressing (XPA).
1664 config CPU_MIPS32_R5_XPA
1665 bool "Extended Physical Addressing (XPA)"
1666 depends on CPU_MIPS32_R5_FEATURES
1668 depends on !PAGE_SIZE_4KB
1669 depends on SYS_SUPPORTS_HIGHMEM
1672 select ARCH_PHYS_ADDR_T_64BIT
1675 Choose this option if you want to enable the Extended Physical
1676 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1677 benefit is to increase physical addressing equal to or greater
1678 than 40 bits. Note that this has the side effect of turning on
1679 64-bit addressing which in turn makes the PTEs 64-bit in size.
1680 If unsure, say 'N' here.
1683 config CPU_NOP_WORKAROUNDS
1686 config CPU_JUMP_WORKAROUNDS
1689 config CPU_LOONGSON2F_WORKAROUNDS
1690 bool "Loongson 2F Workarounds"
1692 select CPU_NOP_WORKAROUNDS
1693 select CPU_JUMP_WORKAROUNDS
1695 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1696 require workarounds. Without workarounds the system may hang
1697 unexpectedly. For more information please refer to the gas
1698 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1700 Loongson 2F03 and later have fixed these issues and no workarounds
1701 are needed. The workarounds have no significant side effect on them
1702 but may decrease the performance of the system so this option should
1703 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1706 If unsure, please say Y.
1707 endif # CPU_LOONGSON2F
1709 config SYS_SUPPORTS_ZBOOT
1711 select HAVE_KERNEL_GZIP
1712 select HAVE_KERNEL_BZIP2
1713 select HAVE_KERNEL_LZ4
1714 select HAVE_KERNEL_LZMA
1715 select HAVE_KERNEL_LZO
1716 select HAVE_KERNEL_XZ
1718 config SYS_SUPPORTS_ZBOOT_UART16550
1720 select SYS_SUPPORTS_ZBOOT
1722 config CPU_LOONGSON2
1724 select CPU_SUPPORTS_32BIT_KERNEL
1725 select CPU_SUPPORTS_64BIT_KERNEL
1726 select CPU_SUPPORTS_HIGHMEM
1727 select CPU_SUPPORTS_HUGEPAGES
1729 config CPU_LOONGSON1
1733 select CPU_HAS_PREFETCH
1734 select CPU_SUPPORTS_32BIT_KERNEL
1735 select CPU_SUPPORTS_HIGHMEM
1736 select CPU_SUPPORTS_CPUFREQ
1738 config CPU_BMIPS32_3300
1739 select SMP_UP if SMP
1742 config CPU_BMIPS4350
1744 select SYS_SUPPORTS_SMP
1745 select SYS_SUPPORTS_HOTPLUG_CPU
1747 config CPU_BMIPS4380
1749 select MIPS_L1_CACHE_SHIFT_6
1750 select SYS_SUPPORTS_SMP
1751 select SYS_SUPPORTS_HOTPLUG_CPU
1753 config CPU_BMIPS5000
1755 select MIPS_CPU_SCACHE
1756 select MIPS_L1_CACHE_SHIFT_7
1757 select SYS_SUPPORTS_SMP
1758 select SYS_SUPPORTS_HOTPLUG_CPU
1760 config SYS_HAS_CPU_LOONGSON3
1762 select CPU_SUPPORTS_CPUFREQ
1764 config SYS_HAS_CPU_LOONGSON2E
1767 config SYS_HAS_CPU_LOONGSON2F
1769 select CPU_SUPPORTS_CPUFREQ
1770 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1771 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1773 config SYS_HAS_CPU_LOONGSON1B
1776 config SYS_HAS_CPU_MIPS32_R1
1779 config SYS_HAS_CPU_MIPS32_R2
1782 config SYS_HAS_CPU_MIPS32_R3_5
1785 config SYS_HAS_CPU_MIPS32_R5
1788 config SYS_HAS_CPU_MIPS32_R6
1791 config SYS_HAS_CPU_MIPS64_R1
1794 config SYS_HAS_CPU_MIPS64_R2
1797 config SYS_HAS_CPU_MIPS64_R6
1800 config SYS_HAS_CPU_R3000
1803 config SYS_HAS_CPU_TX39XX
1806 config SYS_HAS_CPU_VR41XX
1809 config SYS_HAS_CPU_R4300
1812 config SYS_HAS_CPU_R4X00
1815 config SYS_HAS_CPU_TX49XX
1818 config SYS_HAS_CPU_R5000
1821 config SYS_HAS_CPU_R5432
1824 config SYS_HAS_CPU_R5500
1827 config SYS_HAS_CPU_R6000
1830 config SYS_HAS_CPU_NEVADA
1833 config SYS_HAS_CPU_R8000
1836 config SYS_HAS_CPU_R10000
1839 config SYS_HAS_CPU_RM7000
1842 config SYS_HAS_CPU_SB1
1845 config SYS_HAS_CPU_CAVIUM_OCTEON
1848 config SYS_HAS_CPU_BMIPS
1851 config SYS_HAS_CPU_BMIPS32_3300
1853 select SYS_HAS_CPU_BMIPS
1855 config SYS_HAS_CPU_BMIPS4350
1857 select SYS_HAS_CPU_BMIPS
1859 config SYS_HAS_CPU_BMIPS4380
1861 select SYS_HAS_CPU_BMIPS
1863 config SYS_HAS_CPU_BMIPS5000
1865 select SYS_HAS_CPU_BMIPS
1867 config SYS_HAS_CPU_XLR
1870 config SYS_HAS_CPU_XLP
1873 config MIPS_MALTA_PM
1874 depends on MIPS_MALTA
1880 # CPU may reorder R->R, R->W, W->R, W->W
1881 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1883 config WEAK_ORDERING
1887 # CPU may reorder reads and writes beyond LL/SC
1888 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1890 config WEAK_REORDERING_BEYOND_LLSC
1895 # These two indicate any level of the MIPS32 and MIPS64 architecture
1899 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1903 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1906 # These two indicate the revision of the architecture, either Release 1 or Release 2
1910 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1914 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1919 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1928 config SYS_SUPPORTS_32BIT_KERNEL
1930 config SYS_SUPPORTS_64BIT_KERNEL
1932 config CPU_SUPPORTS_32BIT_KERNEL
1934 config CPU_SUPPORTS_64BIT_KERNEL
1936 config CPU_SUPPORTS_CPUFREQ
1938 config CPU_SUPPORTS_ADDRWINCFG
1940 config CPU_SUPPORTS_HUGEPAGES
1942 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1944 config MIPS_PGD_C0_CONTEXT
1946 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1949 # Set to y for ptrace access to watch registers.
1951 config HARDWARE_WATCHPOINTS
1953 default y if CPU_MIPSR1 || CPU_MIPSR2
1958 prompt "Kernel code model"
1960 You should only select this option if you have a workload that
1961 actually benefits from 64-bit processing or if your machine has
1962 large memory. You will only be presented a single option in this
1963 menu if your system does not support both 32-bit and 64-bit kernels.
1966 bool "32-bit kernel"
1967 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1970 Select this option if you want to build a 32-bit kernel.
1972 bool "64-bit kernel"
1973 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1975 Select this option if you want to build a 64-bit kernel.
1980 bool "KVM Guest Kernel"
1981 depends on BROKEN_ON_SMP
1983 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1985 config KVM_GUEST_TIMER_FREQ
1986 int "Count/Compare Timer Frequency (MHz)"
1987 depends on KVM_GUEST
1990 Set this to non-zero if building a guest kernel for KVM to skip RTC
1991 emulation when determining guest CPU Frequency. Instead, the guest's
1992 timer frequency is specified directly.
1995 prompt "Kernel page size"
1996 default PAGE_SIZE_4KB
1998 config PAGE_SIZE_4KB
2000 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2002 This option select the standard 4kB Linux page size. On some
2003 R3000-family processors this is the only available page size. Using
2004 4kB page size will minimize memory consumption and is therefore
2005 recommended for low memory systems.
2007 config PAGE_SIZE_8KB
2009 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2011 Using 8kB page size will result in higher performance kernel at
2012 the price of higher memory consumption. This option is available
2013 only on R8000 and cnMIPS processors. Note that you will need a
2014 suitable Linux distribution to support this.
2016 config PAGE_SIZE_16KB
2018 depends on !CPU_R3000 && !CPU_TX39XX
2020 Using 16kB page size will result in higher performance kernel at
2021 the price of higher memory consumption. This option is available on
2022 all non-R3000 family processors. Note that you will need a suitable
2023 Linux distribution to support this.
2025 config PAGE_SIZE_32KB
2027 depends on CPU_CAVIUM_OCTEON
2029 Using 32kB page size will result in higher performance kernel at
2030 the price of higher memory consumption. This option is available
2031 only on cnMIPS cores. Note that you will need a suitable Linux
2032 distribution to support this.
2034 config PAGE_SIZE_64KB
2036 depends on !CPU_R3000 && !CPU_TX39XX
2038 Using 64kB page size will result in higher performance kernel at
2039 the price of higher memory consumption. This option is available on
2040 all non-R3000 family processor. Not that at the time of this
2041 writing this option is still high experimental.
2045 config FORCE_MAX_ZONEORDER
2046 int "Maximum zone order"
2047 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2048 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2049 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2050 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2051 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2052 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2056 The kernel memory allocator divides physically contiguous memory
2057 blocks into "zones", where each zone is a power of two number of
2058 pages. This option selects the largest power of two that the kernel
2059 keeps in the memory allocator. If you need to allocate very large
2060 blocks of physically contiguous memory, then you may need to
2061 increase this value.
2063 This config option is actually maximum order plus one. For example,
2064 a value of 11 means that the largest free memory block is 2^10 pages.
2066 The page size is not necessarily 4KB. Keep this in mind
2067 when choosing a value for this option.
2072 config IP22_CPU_SCACHE
2077 # Support for a MIPS32 / MIPS64 style S-caches
2079 config MIPS_CPU_SCACHE
2083 config R5000_CPU_SCACHE
2087 config RM7000_CPU_SCACHE
2091 config SIBYTE_DMA_PAGEOPS
2092 bool "Use DMA to clear/copy pages"
2095 Instead of using the CPU to zero and copy pages, use a Data Mover
2096 channel. These DMA channels are otherwise unused by the standard
2097 SiByte Linux port. Seems to give a small performance benefit.
2099 config CPU_HAS_PREFETCH
2102 config CPU_GENERIC_DUMP_TLB
2104 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2108 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2110 config CPU_R4K_CACHE_TLB
2112 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2115 bool "MIPS MT SMP support (1 TC on each available VPE)"
2116 depends on SYS_SUPPORTS_MULTITHREADING
2117 select CPU_MIPSR2_IRQ_VI
2118 select CPU_MIPSR2_IRQ_EI
2124 select SYS_SUPPORTS_SMP
2125 select SYS_SUPPORTS_SCHED_SMT
2126 select MIPS_PERF_SHARED_TC_COUNTERS
2128 This is a kernel model which is known as SMVP. This is supported
2129 on cores with the MT ASE and uses the available VPEs to implement
2130 virtual processors which supports SMP. This is equivalent to the
2131 Intel Hyperthreading feature. For further information go to
2132 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2138 bool "SMT (multithreading) scheduler support"
2139 depends on SYS_SUPPORTS_SCHED_SMT
2142 SMT scheduler support improves the CPU scheduler's decision making
2143 when dealing with MIPS MT enabled cores at a cost of slightly
2144 increased overhead in some places. If unsure say N here.
2146 config SYS_SUPPORTS_SCHED_SMT
2149 config SYS_SUPPORTS_MULTITHREADING
2152 config MIPS_MT_FPAFF
2153 bool "Dynamic FPU affinity for FP-intensive threads"
2155 depends on MIPS_MT_SMP
2157 config MIPSR2_TO_R6_EMULATOR
2158 bool "MIPS R2-to-R6 emulator"
2159 depends on CPU_MIPSR6 && !SMP
2162 Choose this option if you want to run non-R6 MIPS userland code.
2163 Even if you say 'Y' here, the emulator will still be disabled by
2164 default. You can enable it using the 'mipsr2emu' kernel option.
2165 The only reason this is a build-time option is to save ~14K from the
2167 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2168 depends on SMP && CPU_MIPSR6
2170 config MIPS_VPE_LOADER
2171 bool "VPE loader support."
2172 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2173 select CPU_MIPSR2_IRQ_VI
2174 select CPU_MIPSR2_IRQ_EI
2177 Includes a loader for loading an elf relocatable object
2178 onto another VPE and running it.
2180 config MIPS_VPE_LOADER_CMP
2183 depends on MIPS_VPE_LOADER && MIPS_CMP
2185 config MIPS_VPE_LOADER_MT
2188 depends on MIPS_VPE_LOADER && !MIPS_CMP
2190 config MIPS_VPE_LOADER_TOM
2191 bool "Load VPE program into memory hidden from linux"
2192 depends on MIPS_VPE_LOADER
2195 The loader can use memory that is present but has been hidden from
2196 Linux using the kernel command line option "mem=xxMB". It's up to
2197 you to ensure the amount you put in the option and the space your
2198 program requires is less or equal to the amount physically present.
2200 config MIPS_VPE_APSP_API
2201 bool "Enable support for AP/SP API (RTLX)"
2202 depends on MIPS_VPE_LOADER
2205 config MIPS_VPE_APSP_API_CMP
2208 depends on MIPS_VPE_APSP_API && MIPS_CMP
2210 config MIPS_VPE_APSP_API_MT
2213 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2216 bool "MIPS CMP framework support (DEPRECATED)"
2217 depends on SYS_SUPPORTS_MIPS_CMP
2221 select SYS_SUPPORTS_SMP
2222 select WEAK_ORDERING
2225 Select this if you are using a bootloader which implements the "CMP
2226 framework" protocol (ie. YAMON) and want your kernel to make use of
2227 its ability to start secondary CPUs.
2229 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2233 bool "MIPS Coherent Processing System support"
2234 depends on SYS_SUPPORTS_MIPS_CPS
2237 select MIPS_CPS_PM if HOTPLUG_CPU
2240 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2241 select SYS_SUPPORTS_HOTPLUG_CPU
2242 select SYS_SUPPORTS_SMP
2243 select WEAK_ORDERING
2245 Select this if you wish to run an SMP kernel across multiple cores
2246 within a MIPS Coherent Processing System. When this option is
2247 enabled the kernel will probe for other cores and boot them with
2248 no external assistance. It is safe to enable this when hardware
2249 support is unavailable.
2265 config SB1_PASS_1_WORKAROUNDS
2267 depends on CPU_SB1_PASS_1
2270 config SB1_PASS_2_WORKAROUNDS
2272 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2275 config SB1_PASS_2_1_WORKAROUNDS
2277 depends on CPU_SB1 && CPU_SB1_PASS_2
2281 config ARCH_PHYS_ADDR_T_64BIT
2285 prompt "SmartMIPS or microMIPS ASE support"
2287 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2290 Select this if you want neither microMIPS nor SmartMIPS support
2292 config CPU_HAS_SMARTMIPS
2293 depends on SYS_SUPPORTS_SMARTMIPS
2296 SmartMIPS is a extension of the MIPS32 architecture aimed at
2297 increased security at both hardware and software level for
2298 smartcards. Enabling this option will allow proper use of the
2299 SmartMIPS instructions by Linux applications. However a kernel with
2300 this option will not work on a MIPS core without SmartMIPS core. If
2301 you don't know you probably don't have SmartMIPS and should say N
2304 config CPU_MICROMIPS
2305 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2308 When this option is enabled the kernel will be built using the
2314 bool "Support for the MIPS SIMD Architecture (EXPERIMENTAL)"
2315 depends on CPU_SUPPORTS_MSA
2316 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2318 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2319 and a set of SIMD instructions to operate on them. When this option
2320 is enabled the kernel will support allocating & switching MSA
2321 vector register contexts. If you know that your kernel will only be
2322 running on CPUs which do not support MSA or that your userland will
2323 not be making use of it then you may wish to say N here to reduce
2324 the size & complexity of your kernel.
2335 # Vectored interrupt mode is an R2 feature
2337 config CPU_MIPSR2_IRQ_VI
2341 # Extended interrupt mode is an R2 feature
2343 config CPU_MIPSR2_IRQ_EI
2348 depends on !CPU_R3000
2354 config CPU_DADDI_WORKAROUNDS
2357 config CPU_R4000_WORKAROUNDS
2359 select CPU_R4400_WORKAROUNDS
2361 config CPU_R4400_WORKAROUNDS
2365 # - Highmem only makes sense for the 32-bit kernel.
2366 # - The current highmem code will only work properly on physically indexed
2367 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2368 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2369 # moment we protect the user and offer the highmem option only on machines
2370 # where it's known to be safe. This will not offer highmem on a few systems
2371 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2372 # indexed CPUs but we're playing safe.
2373 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2374 # know they might have memory configurations that could make use of highmem
2378 bool "High Memory Support"
2379 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2381 config CPU_SUPPORTS_HIGHMEM
2384 config SYS_SUPPORTS_HIGHMEM
2387 config SYS_SUPPORTS_SMARTMIPS
2390 config SYS_SUPPORTS_MICROMIPS
2393 config SYS_SUPPORTS_MIPS16
2396 This option must be set if a kernel might be executed on a MIPS16-
2397 enabled CPU even if MIPS16 is not actually being used. In other
2398 words, it makes the kernel MIPS16-tolerant.
2400 config CPU_SUPPORTS_MSA
2403 config ARCH_FLATMEM_ENABLE
2405 depends on !NUMA && !CPU_LOONGSON2
2407 config ARCH_DISCONTIGMEM_ENABLE
2409 default y if SGI_IP27
2411 Say Y to support efficient handling of discontiguous physical memory,
2412 for architectures which are either NUMA (Non-Uniform Memory Access)
2413 or have huge holes in the physical address space for other reasons.
2414 See <file:Documentation/vm/numa> for more.
2416 config ARCH_SPARSEMEM_ENABLE
2418 select SPARSEMEM_STATIC
2422 depends on SYS_SUPPORTS_NUMA
2424 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2425 Access). This option improves performance on systems with more
2426 than two nodes; on two node systems it is generally better to
2427 leave it disabled; on single node systems disable this option
2430 config SYS_SUPPORTS_NUMA
2436 depends on NEED_MULTIPLE_NODES
2438 config HW_PERF_EVENTS
2439 bool "Enable hardware performance counter support for perf events"
2440 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2443 Enable hardware performance counter support for perf events. If
2444 disabled, perf events will use software events only.
2449 bool "Multi-Processing support"
2450 depends on SYS_SUPPORTS_SMP
2452 This enables support for systems with more than one CPU. If you have
2453 a system with only one CPU, say N. If you have a system with more
2454 than one CPU, say Y.
2456 If you say N here, the kernel will run on uni- and multiprocessor
2457 machines, but will use only one CPU of a multiprocessor machine. If
2458 you say Y here, the kernel will run on many, but not all,
2459 uniprocessor machines. On a uniprocessor machine, the kernel
2460 will run faster if you say N here.
2462 People using multiprocessor machines who say Y here should also say
2463 Y to "Enhanced Real Time Clock Support", below.
2465 See also the SMP-HOWTO available at
2466 <http://www.tldp.org/docs.html#howto>.
2468 If you don't know what to do here, say N.
2473 config SYS_SUPPORTS_MIPS_CMP
2476 config SYS_SUPPORTS_MIPS_CPS
2479 config SYS_SUPPORTS_SMP
2482 config NR_CPUS_DEFAULT_4
2485 config NR_CPUS_DEFAULT_8
2488 config NR_CPUS_DEFAULT_16
2491 config NR_CPUS_DEFAULT_32
2494 config NR_CPUS_DEFAULT_64
2498 int "Maximum number of CPUs (2-256)"
2501 default "4" if NR_CPUS_DEFAULT_4
2502 default "8" if NR_CPUS_DEFAULT_8
2503 default "16" if NR_CPUS_DEFAULT_16
2504 default "32" if NR_CPUS_DEFAULT_32
2505 default "64" if NR_CPUS_DEFAULT_64
2507 This allows you to specify the maximum number of CPUs which this
2508 kernel will support. The maximum supported value is 32 for 32-bit
2509 kernel and 64 for 64-bit kernels; the minimum value which makes
2510 sense is 1 for Qemu (useful only for kernel debugging purposes)
2511 and 2 for all others.
2513 This is purely to save memory - each supported CPU adds
2514 approximately eight kilobytes to the kernel image. For best
2515 performance should round up your number of processors to the next
2518 config MIPS_PERF_SHARED_TC_COUNTERS
2522 # Timer Interrupt Frequency Configuration
2526 prompt "Timer frequency"
2529 Allows the configuration of the timer frequency.
2532 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2535 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2538 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2541 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2544 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2547 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2550 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2554 config SYS_SUPPORTS_48HZ
2557 config SYS_SUPPORTS_100HZ
2560 config SYS_SUPPORTS_128HZ
2563 config SYS_SUPPORTS_250HZ
2566 config SYS_SUPPORTS_256HZ
2569 config SYS_SUPPORTS_1000HZ
2572 config SYS_SUPPORTS_1024HZ
2575 config SYS_SUPPORTS_ARBIT_HZ
2577 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2578 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2579 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2580 !SYS_SUPPORTS_1024HZ
2585 default 100 if HZ_100
2586 default 128 if HZ_128
2587 default 250 if HZ_250
2588 default 256 if HZ_256
2589 default 1000 if HZ_1000
2590 default 1024 if HZ_1024
2593 def_bool HIGH_RES_TIMERS
2595 source "kernel/Kconfig.preempt"
2598 bool "Kexec system call"
2600 kexec is a system call that implements the ability to shutdown your
2601 current kernel, and to start another kernel. It is like a reboot
2602 but it is independent of the system firmware. And like a reboot
2603 you can start any kernel with it, not just Linux.
2605 The name comes from the similarity to the exec system call.
2607 It is an ongoing process to be certain the hardware in a machine
2608 is properly shutdown, so do not be surprised if this code does not
2609 initially work for you. As of this writing the exact hardware
2610 interface is strongly in flux, so no good recommendation can be
2614 bool "Kernel crash dumps"
2616 Generate crash dump after being started by kexec.
2617 This should be normally only set in special crash dump kernels
2618 which are loaded in the main kernel with kexec-tools into
2619 a specially reserved region and then later executed after
2620 a crash by kdump/kexec. The crash dump kernel must be compiled
2621 to a memory address not used by the main kernel or firmware using
2624 config PHYSICAL_START
2625 hex "Physical address where the kernel is loaded"
2626 default "0xffffffff84000000" if 64BIT
2627 default "0x84000000" if 32BIT
2628 depends on CRASH_DUMP
2630 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2631 If you plan to use kernel for capturing the crash dump change
2632 this value to start of the reserved region (the "X" value as
2633 specified in the "crashkernel=YM@XM" command line boot parameter
2634 passed to the panic-ed kernel).
2637 bool "Enable seccomp to safely compute untrusted bytecode"
2641 This kernel feature is useful for number crunching applications
2642 that may need to compute untrusted bytecode during their
2643 execution. By using pipes or other transports made available to
2644 the process as file descriptors supporting the read/write
2645 syscalls, it's possible to isolate those applications in
2646 their own address space using seccomp. Once seccomp is
2647 enabled via /proc/<pid>/seccomp, it cannot be disabled
2648 and the task is only allowed to execute a few safe syscalls
2649 defined by each seccomp mode.
2651 If unsure, say Y. Only embedded should say N here.
2653 config MIPS_O32_FP64_SUPPORT
2654 bool "Support for O32 binaries using 64-bit FP (EXPERIMENTAL)"
2655 depends on 32BIT || MIPS32_O32
2657 When this is enabled, the kernel will support use of 64-bit floating
2658 point registers with binaries using the O32 ABI along with the
2659 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2660 32-bit MIPS systems this support is at the cost of increasing the
2661 size and complexity of the compiled FPU emulator. Thus if you are
2662 running a MIPS32 system and know that none of your userland binaries
2663 will require 64-bit floating point, you may wish to reduce the size
2664 of your kernel & potentially improve FP emulation performance by
2667 Although binutils currently supports use of this flag the details
2668 concerning its effect upon the O32 ABI in userland are still being
2669 worked on. In order to avoid userland becoming dependant upon current
2670 behaviour before the details have been finalised, this option should
2671 be considered experimental and only enabled by those working upon
2679 select OF_EARLY_FLATTREE
2686 prompt "Kernel appended dtb support" if OF
2687 default MIPS_NO_APPENDED_DTB
2689 config MIPS_NO_APPENDED_DTB
2692 Do not enable appended dtb support.
2694 config MIPS_RAW_APPENDED_DTB
2697 With this option, the boot code will look for a device tree binary
2698 DTB) appended to raw vmlinux.bin (without decompressor).
2699 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2701 This is meant as a backward compatibility convenience for those
2702 systems with a bootloader that can't be upgraded to accommodate
2703 the documented boot protocol using a device tree.
2705 Beware that there is very little in terms of protection against
2706 this option being confused by leftover garbage in memory that might
2707 look like a DTB header after a reboot if no actual DTB is appended
2708 to vmlinux.bin. Do not leave this option active in a production kernel
2709 if you don't intend to always append a DTB.
2711 config MIPS_ZBOOT_APPENDED_DTB
2713 depends on SYS_SUPPORTS_ZBOOT
2715 With this option, the boot code will look for a device tree binary
2716 DTB) appended to raw vmlinuz.bin (with decompressor).
2717 (e.g. cat vmlinuz.bin <filename>.dtb > vmlinuz_w_dtb).
2719 This is meant as a backward compatibility convenience for those
2720 systems with a bootloader that can't be upgraded to accommodate
2721 the documented boot protocol using a device tree.
2723 Beware that there is very little in terms of protection against
2724 this option being confused by leftover garbage in memory that might
2725 look like a DTB header after a reboot if no actual DTB is appended
2726 to vmlinuz.bin. Do not leave this option active in a production kernel
2727 if you don't intend to always append a DTB.
2732 config LOCKDEP_SUPPORT
2736 config STACKTRACE_SUPPORT
2740 config PGTABLE_LEVELS
2742 default 3 if 64BIT && !PAGE_SIZE_64KB
2745 source "init/Kconfig"
2747 source "kernel/Kconfig.freezer"
2749 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2757 bool "Support for PCI controller"
2758 depends on HW_HAS_PCI
2760 select NO_GENERIC_PCI_IOPORT_MAP
2762 Find out whether you have a PCI motherboard. PCI is the name of a
2763 bus system, i.e. the way the CPU talks to the other stuff inside
2764 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2768 bool "Support for HT-linked PCI"
2770 depends on CPU_LOONGSON3
2774 Loongson family machines use Hyper-Transport bus for inter-core
2775 connection and device connection. The PCI bus is a subordinate
2776 linked at HT. Choose Y for Loongson-3 based machines.
2781 source "drivers/pci/Kconfig"
2783 source "drivers/pci/pcie/Kconfig"
2786 # ISA support is now enabled via select. Too many systems still have the one
2787 # or other ISA chip on the board that users don't know about so don't expect
2788 # users to choose the right thing ...
2795 depends on HW_HAS_EISA
2797 select GENERIC_ISA_DMA
2799 The Extended Industry Standard Architecture (EISA) bus was
2800 developed as an open alternative to the IBM MicroChannel bus.
2802 The EISA bus provided some of the features of the IBM MicroChannel
2803 bus while maintaining backward compatibility with cards made for
2804 the older ISA bus. The EISA bus saw limited use between 1988 and
2805 1995 when it was made obsolete by the PCI bus.
2807 Say Y here if you are building a kernel for an EISA-based machine.
2811 source "drivers/eisa/Kconfig"
2814 bool "TURBOchannel support"
2815 depends on MACH_DECSTATION
2817 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2818 processors. TURBOchannel programming specifications are available
2820 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2822 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2823 Linux driver support status is documented at:
2824 <http://www.linux-mips.org/wiki/DECstation>
2834 select MIPS_EXTERNAL_TIMER
2842 source "drivers/pcmcia/Kconfig"
2844 source "drivers/pci/hotplug/Kconfig"
2847 tristate "RapidIO support"
2851 If you say Y here, the kernel will include drivers and
2852 infrastructure code to support RapidIO interconnect devices.
2854 source "drivers/rapidio/Kconfig"
2858 menu "Executable file formats"
2860 source "fs/Kconfig.binfmt"
2865 config MIPS32_COMPAT
2871 config SYSVIPC_COMPAT
2875 bool "Kernel support for o32 binaries"
2877 select ARCH_WANT_OLD_COMPAT_IPC
2879 select MIPS32_COMPAT
2880 select SYSVIPC_COMPAT if SYSVIPC
2882 Select this option if you want to run o32 binaries. These are pure
2883 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2884 existing binaries are in this format.
2889 bool "Kernel support for n32 binaries"
2892 select MIPS32_COMPAT
2893 select SYSVIPC_COMPAT if SYSVIPC
2895 Select this option if you want to run n32 binaries. These are
2896 64-bit binaries using 32-bit quantities for addressing and certain
2897 data that would normally be 64-bit. They are used in special
2904 default y if MIPS32_O32 || MIPS32_N32
2908 menu "Power management options"
2910 config ARCH_HIBERNATION_POSSIBLE
2912 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2914 config ARCH_SUSPEND_POSSIBLE
2916 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2918 source "kernel/power/Kconfig"
2922 config MIPS_EXTERNAL_TIMER
2925 menu "CPU Power Management"
2927 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2928 source "drivers/cpufreq/Kconfig"
2931 source "drivers/cpuidle/Kconfig"
2935 source "net/Kconfig"
2937 source "drivers/Kconfig"
2939 source "drivers/firmware/Kconfig"
2943 source "arch/mips/Kconfig.debug"
2945 source "security/Kconfig"
2947 source "crypto/Kconfig"
2949 source "lib/Kconfig"
2951 source "arch/mips/kvm/Kconfig"