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_HAS_RESET_CONTROLLER
122 select ARCH_REQUIRE_GPIOLIB
126 select DMA_NONCOHERENT
132 select SYS_HAS_CPU_MIPS32_R2
133 select SYS_HAS_EARLY_PRINTK
134 select SYS_SUPPORTS_32BIT_KERNEL
135 select SYS_SUPPORTS_BIG_ENDIAN
136 select SYS_SUPPORTS_MIPS16
137 select SYS_SUPPORTS_ZBOOT
140 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
143 bool "Broadcom Generic BMIPS kernel"
145 select NO_EXCEPT_FILL
151 select BCM7038_L1_IRQ
152 select BCM7120_L2_IRQ
153 select BRCMSTB_L2_IRQ
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
1074 config MIPS_BONITO64
1089 config NO_IOPORT_MAP
1095 config GENERIC_ISA_DMA
1097 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1100 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1102 select GENERIC_ISA_DMA
1107 config HOLES_IN_ZONE
1111 # Endianness selection. Sufficiently obscure so many users don't know what to
1112 # answer,so we try hard to limit the available choices. Also the use of a
1113 # choice statement should be more obvious to the user.
1116 prompt "Endianness selection"
1118 Some MIPS machines can be configured for either little or big endian
1119 byte order. These modes require different kernels and a different
1120 Linux distribution. In general there is one preferred byteorder for a
1121 particular system but some systems are just as commonly used in the
1122 one or the other endianness.
1124 config CPU_BIG_ENDIAN
1126 depends on SYS_SUPPORTS_BIG_ENDIAN
1128 config CPU_LITTLE_ENDIAN
1129 bool "Little endian"
1130 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1137 config SYS_SUPPORTS_APM_EMULATION
1140 config SYS_SUPPORTS_BIG_ENDIAN
1143 config SYS_SUPPORTS_LITTLE_ENDIAN
1146 config SYS_SUPPORTS_HUGETLBFS
1148 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1151 config MIPS_HUGE_TLB_SUPPORT
1152 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1169 config PCI_GT64XXX_PCI0
1172 config NO_EXCEPT_FILL
1179 select DMA_NONCOHERENT
1181 select SWAP_IO_SPACE
1182 select SYS_HAS_CPU_R5500
1183 select SYS_SUPPORTS_32BIT_KERNEL
1184 select SYS_SUPPORTS_64BIT_KERNEL
1185 select SYS_SUPPORTS_BIG_ENDIAN
1192 select DMA_NONCOHERENT
1193 select SYS_HAS_CPU_MIPS32_R2
1194 select SYS_SUPPORTS_32BIT_KERNEL
1195 select SYS_SUPPORTS_LITTLE_ENDIAN
1196 select SYS_SUPPORTS_BIG_ENDIAN
1197 select SYS_SUPPORTS_MIPS16
1198 select CPU_MIPSR2_IRQ_VI
1207 config SWAP_IO_SPACE
1210 config SGI_HAS_INDYDOG
1222 config SGI_HAS_ZILOG
1225 config SGI_HAS_I8042
1228 config DEFAULT_SGI_PARTITION
1240 config MIPS_L1_CACHE_SHIFT_4
1243 config MIPS_L1_CACHE_SHIFT_5
1246 config MIPS_L1_CACHE_SHIFT_6
1249 config MIPS_L1_CACHE_SHIFT_7
1252 config MIPS_L1_CACHE_SHIFT
1254 default "7" if MIPS_L1_CACHE_SHIFT_7
1255 default "6" if MIPS_L1_CACHE_SHIFT_6
1256 default "5" if MIPS_L1_CACHE_SHIFT_5
1257 default "4" if MIPS_L1_CACHE_SHIFT_4
1260 config HAVE_STD_PC_SERIAL_PORT
1264 bool "ARC console support"
1265 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1269 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1274 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1283 menu "CPU selection"
1289 config CPU_LOONGSON3
1290 bool "Loongson 3 CPU"
1291 depends on SYS_HAS_CPU_LOONGSON3
1292 select CPU_SUPPORTS_64BIT_KERNEL
1293 select CPU_SUPPORTS_HIGHMEM
1294 select CPU_SUPPORTS_HUGEPAGES
1295 select WEAK_ORDERING
1296 select WEAK_REORDERING_BEYOND_LLSC
1297 select ARCH_REQUIRE_GPIOLIB
1299 The Loongson 3 processor implements the MIPS64R2 instruction
1300 set with many extensions.
1302 config CPU_LOONGSON2E
1304 depends on SYS_HAS_CPU_LOONGSON2E
1305 select CPU_LOONGSON2
1307 The Loongson 2E processor implements the MIPS III instruction set
1308 with many extensions.
1310 It has an internal FPGA northbridge, which is compatible to
1313 config CPU_LOONGSON2F
1315 depends on SYS_HAS_CPU_LOONGSON2F
1316 select CPU_LOONGSON2
1317 select ARCH_REQUIRE_GPIOLIB
1319 The Loongson 2F processor implements the MIPS III instruction set
1320 with many extensions.
1322 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1323 have a similar programming interface with FPGA northbridge used in
1326 config CPU_LOONGSON1B
1328 depends on SYS_HAS_CPU_LOONGSON1B
1329 select CPU_LOONGSON1
1331 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1332 release 2 instruction set.
1334 config CPU_MIPS32_R1
1335 bool "MIPS32 Release 1"
1336 depends on SYS_HAS_CPU_MIPS32_R1
1337 select CPU_HAS_PREFETCH
1338 select CPU_SUPPORTS_32BIT_KERNEL
1339 select CPU_SUPPORTS_HIGHMEM
1341 Choose this option to build a kernel for release 1 or later of the
1342 MIPS32 architecture. Most modern embedded systems with a 32-bit
1343 MIPS processor are based on a MIPS32 processor. If you know the
1344 specific type of processor in your system, choose those that one
1345 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1346 Release 2 of the MIPS32 architecture is available since several
1347 years so chances are you even have a MIPS32 Release 2 processor
1348 in which case you should choose CPU_MIPS32_R2 instead for better
1351 config CPU_MIPS32_R2
1352 bool "MIPS32 Release 2"
1353 depends on SYS_HAS_CPU_MIPS32_R2
1354 select CPU_HAS_PREFETCH
1355 select CPU_SUPPORTS_32BIT_KERNEL
1356 select CPU_SUPPORTS_HIGHMEM
1357 select CPU_SUPPORTS_MSA
1360 Choose this option to build a kernel for release 2 or later of the
1361 MIPS32 architecture. Most modern embedded systems with a 32-bit
1362 MIPS processor are based on a MIPS32 processor. If you know the
1363 specific type of processor in your system, choose those that one
1364 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1366 config CPU_MIPS32_R6
1367 bool "MIPS32 Release 6 (EXPERIMENTAL)"
1368 depends on SYS_HAS_CPU_MIPS32_R6
1369 select CPU_HAS_PREFETCH
1370 select CPU_SUPPORTS_32BIT_KERNEL
1371 select CPU_SUPPORTS_HIGHMEM
1372 select CPU_SUPPORTS_MSA
1375 select MIPS_O32_FP64_SUPPORT
1377 Choose this option to build a kernel for release 6 or later of the
1378 MIPS32 architecture. New MIPS processors, starting with the Warrior
1379 family, are based on a MIPS32r6 processor. If you own an older
1380 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1382 config CPU_MIPS64_R1
1383 bool "MIPS64 Release 1"
1384 depends on SYS_HAS_CPU_MIPS64_R1
1385 select CPU_HAS_PREFETCH
1386 select CPU_SUPPORTS_32BIT_KERNEL
1387 select CPU_SUPPORTS_64BIT_KERNEL
1388 select CPU_SUPPORTS_HIGHMEM
1389 select CPU_SUPPORTS_HUGEPAGES
1391 Choose this option to build a kernel for release 1 or later of the
1392 MIPS64 architecture. Many modern embedded systems with a 64-bit
1393 MIPS processor are based on a MIPS64 processor. If you know the
1394 specific type of processor in your system, choose those that one
1395 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1396 Release 2 of the MIPS64 architecture is available since several
1397 years so chances are you even have a MIPS64 Release 2 processor
1398 in which case you should choose CPU_MIPS64_R2 instead for better
1401 config CPU_MIPS64_R2
1402 bool "MIPS64 Release 2"
1403 depends on SYS_HAS_CPU_MIPS64_R2
1404 select CPU_HAS_PREFETCH
1405 select CPU_SUPPORTS_32BIT_KERNEL
1406 select CPU_SUPPORTS_64BIT_KERNEL
1407 select CPU_SUPPORTS_HIGHMEM
1408 select CPU_SUPPORTS_HUGEPAGES
1409 select CPU_SUPPORTS_MSA
1411 Choose this option to build a kernel for release 2 or later of the
1412 MIPS64 architecture. Many modern embedded systems with a 64-bit
1413 MIPS processor are based on a MIPS64 processor. If you know the
1414 specific type of processor in your system, choose those that one
1415 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1417 config CPU_MIPS64_R6
1418 bool "MIPS64 Release 6 (EXPERIMENTAL)"
1419 depends on SYS_HAS_CPU_MIPS64_R6
1420 select CPU_HAS_PREFETCH
1421 select CPU_SUPPORTS_32BIT_KERNEL
1422 select CPU_SUPPORTS_64BIT_KERNEL
1423 select CPU_SUPPORTS_HIGHMEM
1424 select CPU_SUPPORTS_MSA
1426 select MIPS_O32_FP64_SUPPORT if MIPS32_O32
1428 Choose this option to build a kernel for release 6 or later of the
1429 MIPS64 architecture. New MIPS processors, starting with the Warrior
1430 family, are based on a MIPS64r6 processor. If you own an older
1431 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1435 depends on SYS_HAS_CPU_R3000
1437 select CPU_SUPPORTS_32BIT_KERNEL
1438 select CPU_SUPPORTS_HIGHMEM
1440 Please make sure to pick the right CPU type. Linux/MIPS is not
1441 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1442 *not* work on R4000 machines and vice versa. However, since most
1443 of the supported machines have an R4000 (or similar) CPU, R4x00
1444 might be a safe bet. If the resulting kernel does not work,
1445 try to recompile with R3000.
1449 depends on SYS_HAS_CPU_TX39XX
1450 select CPU_SUPPORTS_32BIT_KERNEL
1454 depends on SYS_HAS_CPU_VR41XX
1455 select CPU_SUPPORTS_32BIT_KERNEL
1456 select CPU_SUPPORTS_64BIT_KERNEL
1458 The options selects support for the NEC VR4100 series of processors.
1459 Only choose this option if you have one of these processors as a
1460 kernel built with this option will not run on any other type of
1461 processor or vice versa.
1465 depends on SYS_HAS_CPU_R4300
1466 select CPU_SUPPORTS_32BIT_KERNEL
1467 select CPU_SUPPORTS_64BIT_KERNEL
1469 MIPS Technologies R4300-series processors.
1473 depends on SYS_HAS_CPU_R4X00
1474 select CPU_SUPPORTS_32BIT_KERNEL
1475 select CPU_SUPPORTS_64BIT_KERNEL
1476 select CPU_SUPPORTS_HUGEPAGES
1478 MIPS Technologies R4000-series processors other than 4300, including
1479 the R4000, R4400, R4600, and 4700.
1483 depends on SYS_HAS_CPU_TX49XX
1484 select CPU_HAS_PREFETCH
1485 select CPU_SUPPORTS_32BIT_KERNEL
1486 select CPU_SUPPORTS_64BIT_KERNEL
1487 select CPU_SUPPORTS_HUGEPAGES
1491 depends on SYS_HAS_CPU_R5000
1492 select CPU_SUPPORTS_32BIT_KERNEL
1493 select CPU_SUPPORTS_64BIT_KERNEL
1494 select CPU_SUPPORTS_HUGEPAGES
1496 MIPS Technologies R5000-series processors other than the Nevada.
1500 depends on SYS_HAS_CPU_R5432
1501 select CPU_SUPPORTS_32BIT_KERNEL
1502 select CPU_SUPPORTS_64BIT_KERNEL
1503 select CPU_SUPPORTS_HUGEPAGES
1507 depends on SYS_HAS_CPU_R5500
1508 select CPU_SUPPORTS_32BIT_KERNEL
1509 select CPU_SUPPORTS_64BIT_KERNEL
1510 select CPU_SUPPORTS_HUGEPAGES
1512 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1517 depends on SYS_HAS_CPU_R6000
1518 select CPU_SUPPORTS_32BIT_KERNEL
1520 MIPS Technologies R6000 and R6000A series processors. Note these
1521 processors are extremely rare and the support for them is incomplete.
1525 depends on SYS_HAS_CPU_NEVADA
1526 select CPU_SUPPORTS_32BIT_KERNEL
1527 select CPU_SUPPORTS_64BIT_KERNEL
1528 select CPU_SUPPORTS_HUGEPAGES
1530 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1534 depends on SYS_HAS_CPU_R8000
1535 select CPU_HAS_PREFETCH
1536 select CPU_SUPPORTS_64BIT_KERNEL
1538 MIPS Technologies R8000 processors. Note these processors are
1539 uncommon and the support for them is incomplete.
1543 depends on SYS_HAS_CPU_R10000
1544 select CPU_HAS_PREFETCH
1545 select CPU_SUPPORTS_32BIT_KERNEL
1546 select CPU_SUPPORTS_64BIT_KERNEL
1547 select CPU_SUPPORTS_HIGHMEM
1548 select CPU_SUPPORTS_HUGEPAGES
1550 MIPS Technologies R10000-series processors.
1554 depends on SYS_HAS_CPU_RM7000
1555 select CPU_HAS_PREFETCH
1556 select CPU_SUPPORTS_32BIT_KERNEL
1557 select CPU_SUPPORTS_64BIT_KERNEL
1558 select CPU_SUPPORTS_HIGHMEM
1559 select CPU_SUPPORTS_HUGEPAGES
1563 depends on SYS_HAS_CPU_SB1
1564 select CPU_SUPPORTS_32BIT_KERNEL
1565 select CPU_SUPPORTS_64BIT_KERNEL
1566 select CPU_SUPPORTS_HIGHMEM
1567 select CPU_SUPPORTS_HUGEPAGES
1568 select WEAK_ORDERING
1570 config CPU_CAVIUM_OCTEON
1571 bool "Cavium Octeon processor"
1572 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1573 select CPU_HAS_PREFETCH
1574 select CPU_SUPPORTS_64BIT_KERNEL
1575 select WEAK_ORDERING
1576 select CPU_SUPPORTS_HIGHMEM
1577 select CPU_SUPPORTS_HUGEPAGES
1578 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1579 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1580 select MIPS_L1_CACHE_SHIFT_7
1582 The Cavium Octeon processor is a highly integrated chip containing
1583 many ethernet hardware widgets for networking tasks. The processor
1584 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1585 Full details can be found at http://www.caviumnetworks.com.
1588 bool "Broadcom BMIPS"
1589 depends on SYS_HAS_CPU_BMIPS
1591 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1592 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1593 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1594 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1595 select CPU_SUPPORTS_32BIT_KERNEL
1596 select DMA_NONCOHERENT
1598 select SWAP_IO_SPACE
1599 select WEAK_ORDERING
1600 select CPU_SUPPORTS_HIGHMEM
1601 select CPU_HAS_PREFETCH
1603 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1606 bool "Netlogic XLR SoC"
1607 depends on SYS_HAS_CPU_XLR
1608 select CPU_SUPPORTS_32BIT_KERNEL
1609 select CPU_SUPPORTS_64BIT_KERNEL
1610 select CPU_SUPPORTS_HIGHMEM
1611 select CPU_SUPPORTS_HUGEPAGES
1612 select WEAK_ORDERING
1613 select WEAK_REORDERING_BEYOND_LLSC
1615 Netlogic Microsystems XLR/XLS processors.
1618 bool "Netlogic XLP SoC"
1619 depends on SYS_HAS_CPU_XLP
1620 select CPU_SUPPORTS_32BIT_KERNEL
1621 select CPU_SUPPORTS_64BIT_KERNEL
1622 select CPU_SUPPORTS_HIGHMEM
1623 select WEAK_ORDERING
1624 select WEAK_REORDERING_BEYOND_LLSC
1625 select CPU_HAS_PREFETCH
1627 select CPU_SUPPORTS_HUGEPAGES
1629 Netlogic Microsystems XLP processors.
1632 config CPU_MIPS32_3_5_FEATURES
1633 bool "MIPS32 Release 3.5 Features"
1634 depends on SYS_HAS_CPU_MIPS32_R3_5
1635 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1637 Choose this option to build a kernel for release 2 or later of the
1638 MIPS32 architecture including features from the 3.5 release such as
1639 support for Enhanced Virtual Addressing (EVA).
1641 config CPU_MIPS32_3_5_EVA
1642 bool "Enhanced Virtual Addressing (EVA)"
1643 depends on CPU_MIPS32_3_5_FEATURES
1647 Choose this option if you want to enable the Enhanced Virtual
1648 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1649 One of its primary benefits is an increase in the maximum size
1650 of lowmem (up to 3GB). If unsure, say 'N' here.
1652 config CPU_MIPS32_R5_FEATURES
1653 bool "MIPS32 Release 5 Features"
1654 depends on SYS_HAS_CPU_MIPS32_R5
1655 depends on CPU_MIPS32_R2
1657 Choose this option to build a kernel for release 2 or later of the
1658 MIPS32 architecture including features from release 5 such as
1659 support for Extended Physical Addressing (XPA).
1661 config CPU_MIPS32_R5_XPA
1662 bool "Extended Physical Addressing (XPA)"
1663 depends on CPU_MIPS32_R5_FEATURES
1665 depends on !PAGE_SIZE_4KB
1666 depends on SYS_SUPPORTS_HIGHMEM
1669 select ARCH_PHYS_ADDR_T_64BIT
1672 Choose this option if you want to enable the Extended Physical
1673 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1674 benefit is to increase physical addressing equal to or greater
1675 than 40 bits. Note that this has the side effect of turning on
1676 64-bit addressing which in turn makes the PTEs 64-bit in size.
1677 If unsure, say 'N' here.
1680 config CPU_NOP_WORKAROUNDS
1683 config CPU_JUMP_WORKAROUNDS
1686 config CPU_LOONGSON2F_WORKAROUNDS
1687 bool "Loongson 2F Workarounds"
1689 select CPU_NOP_WORKAROUNDS
1690 select CPU_JUMP_WORKAROUNDS
1692 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1693 require workarounds. Without workarounds the system may hang
1694 unexpectedly. For more information please refer to the gas
1695 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1697 Loongson 2F03 and later have fixed these issues and no workarounds
1698 are needed. The workarounds have no significant side effect on them
1699 but may decrease the performance of the system so this option should
1700 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1703 If unsure, please say Y.
1704 endif # CPU_LOONGSON2F
1706 config SYS_SUPPORTS_ZBOOT
1708 select HAVE_KERNEL_GZIP
1709 select HAVE_KERNEL_BZIP2
1710 select HAVE_KERNEL_LZ4
1711 select HAVE_KERNEL_LZMA
1712 select HAVE_KERNEL_LZO
1713 select HAVE_KERNEL_XZ
1715 config SYS_SUPPORTS_ZBOOT_UART16550
1717 select SYS_SUPPORTS_ZBOOT
1719 config CPU_LOONGSON2
1721 select CPU_SUPPORTS_32BIT_KERNEL
1722 select CPU_SUPPORTS_64BIT_KERNEL
1723 select CPU_SUPPORTS_HIGHMEM
1724 select CPU_SUPPORTS_HUGEPAGES
1726 config CPU_LOONGSON1
1730 select CPU_HAS_PREFETCH
1731 select CPU_SUPPORTS_32BIT_KERNEL
1732 select CPU_SUPPORTS_HIGHMEM
1733 select CPU_SUPPORTS_CPUFREQ
1735 config CPU_BMIPS32_3300
1736 select SMP_UP if SMP
1739 config CPU_BMIPS4350
1741 select SYS_SUPPORTS_SMP
1742 select SYS_SUPPORTS_HOTPLUG_CPU
1744 config CPU_BMIPS4380
1746 select MIPS_L1_CACHE_SHIFT_6
1747 select SYS_SUPPORTS_SMP
1748 select SYS_SUPPORTS_HOTPLUG_CPU
1750 config CPU_BMIPS5000
1752 select MIPS_CPU_SCACHE
1753 select MIPS_L1_CACHE_SHIFT_7
1754 select SYS_SUPPORTS_SMP
1755 select SYS_SUPPORTS_HOTPLUG_CPU
1757 config SYS_HAS_CPU_LOONGSON3
1759 select CPU_SUPPORTS_CPUFREQ
1761 config SYS_HAS_CPU_LOONGSON2E
1764 config SYS_HAS_CPU_LOONGSON2F
1766 select CPU_SUPPORTS_CPUFREQ
1767 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1768 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1770 config SYS_HAS_CPU_LOONGSON1B
1773 config SYS_HAS_CPU_MIPS32_R1
1776 config SYS_HAS_CPU_MIPS32_R2
1779 config SYS_HAS_CPU_MIPS32_R3_5
1782 config SYS_HAS_CPU_MIPS32_R5
1785 config SYS_HAS_CPU_MIPS32_R6
1788 config SYS_HAS_CPU_MIPS64_R1
1791 config SYS_HAS_CPU_MIPS64_R2
1794 config SYS_HAS_CPU_MIPS64_R6
1797 config SYS_HAS_CPU_R3000
1800 config SYS_HAS_CPU_TX39XX
1803 config SYS_HAS_CPU_VR41XX
1806 config SYS_HAS_CPU_R4300
1809 config SYS_HAS_CPU_R4X00
1812 config SYS_HAS_CPU_TX49XX
1815 config SYS_HAS_CPU_R5000
1818 config SYS_HAS_CPU_R5432
1821 config SYS_HAS_CPU_R5500
1824 config SYS_HAS_CPU_R6000
1827 config SYS_HAS_CPU_NEVADA
1830 config SYS_HAS_CPU_R8000
1833 config SYS_HAS_CPU_R10000
1836 config SYS_HAS_CPU_RM7000
1839 config SYS_HAS_CPU_SB1
1842 config SYS_HAS_CPU_CAVIUM_OCTEON
1845 config SYS_HAS_CPU_BMIPS
1848 config SYS_HAS_CPU_BMIPS32_3300
1850 select SYS_HAS_CPU_BMIPS
1852 config SYS_HAS_CPU_BMIPS4350
1854 select SYS_HAS_CPU_BMIPS
1856 config SYS_HAS_CPU_BMIPS4380
1858 select SYS_HAS_CPU_BMIPS
1860 config SYS_HAS_CPU_BMIPS5000
1862 select SYS_HAS_CPU_BMIPS
1864 config SYS_HAS_CPU_XLR
1867 config SYS_HAS_CPU_XLP
1870 config MIPS_MALTA_PM
1871 depends on MIPS_MALTA
1877 # CPU may reorder R->R, R->W, W->R, W->W
1878 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1880 config WEAK_ORDERING
1884 # CPU may reorder reads and writes beyond LL/SC
1885 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1887 config WEAK_REORDERING_BEYOND_LLSC
1892 # These two indicate any level of the MIPS32 and MIPS64 architecture
1896 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1900 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1903 # These two indicate the revision of the architecture, either Release 1 or Release 2
1907 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1911 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1916 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1925 config SYS_SUPPORTS_32BIT_KERNEL
1927 config SYS_SUPPORTS_64BIT_KERNEL
1929 config CPU_SUPPORTS_32BIT_KERNEL
1931 config CPU_SUPPORTS_64BIT_KERNEL
1933 config CPU_SUPPORTS_CPUFREQ
1935 config CPU_SUPPORTS_ADDRWINCFG
1937 config CPU_SUPPORTS_HUGEPAGES
1939 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1941 config MIPS_PGD_C0_CONTEXT
1943 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1946 # Set to y for ptrace access to watch registers.
1948 config HARDWARE_WATCHPOINTS
1950 default y if CPU_MIPSR1 || CPU_MIPSR2
1955 prompt "Kernel code model"
1957 You should only select this option if you have a workload that
1958 actually benefits from 64-bit processing or if your machine has
1959 large memory. You will only be presented a single option in this
1960 menu if your system does not support both 32-bit and 64-bit kernels.
1963 bool "32-bit kernel"
1964 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1967 Select this option if you want to build a 32-bit kernel.
1969 bool "64-bit kernel"
1970 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1972 Select this option if you want to build a 64-bit kernel.
1977 bool "KVM Guest Kernel"
1978 depends on BROKEN_ON_SMP
1980 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1982 config KVM_GUEST_TIMER_FREQ
1983 int "Count/Compare Timer Frequency (MHz)"
1984 depends on KVM_GUEST
1987 Set this to non-zero if building a guest kernel for KVM to skip RTC
1988 emulation when determining guest CPU Frequency. Instead, the guest's
1989 timer frequency is specified directly.
1992 prompt "Kernel page size"
1993 default PAGE_SIZE_4KB
1995 config PAGE_SIZE_4KB
1997 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
1999 This option select the standard 4kB Linux page size. On some
2000 R3000-family processors this is the only available page size. Using
2001 4kB page size will minimize memory consumption and is therefore
2002 recommended for low memory systems.
2004 config PAGE_SIZE_8KB
2006 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2008 Using 8kB page size will result in higher performance kernel at
2009 the price of higher memory consumption. This option is available
2010 only on R8000 and cnMIPS processors. Note that you will need a
2011 suitable Linux distribution to support this.
2013 config PAGE_SIZE_16KB
2015 depends on !CPU_R3000 && !CPU_TX39XX
2017 Using 16kB page size will result in higher performance kernel at
2018 the price of higher memory consumption. This option is available on
2019 all non-R3000 family processors. Note that you will need a suitable
2020 Linux distribution to support this.
2022 config PAGE_SIZE_32KB
2024 depends on CPU_CAVIUM_OCTEON
2026 Using 32kB page size will result in higher performance kernel at
2027 the price of higher memory consumption. This option is available
2028 only on cnMIPS cores. Note that you will need a suitable Linux
2029 distribution to support this.
2031 config PAGE_SIZE_64KB
2033 depends on !CPU_R3000 && !CPU_TX39XX
2035 Using 64kB page size will result in higher performance kernel at
2036 the price of higher memory consumption. This option is available on
2037 all non-R3000 family processor. Not that at the time of this
2038 writing this option is still high experimental.
2042 config FORCE_MAX_ZONEORDER
2043 int "Maximum zone order"
2044 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2045 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2046 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2047 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2048 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2049 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2053 The kernel memory allocator divides physically contiguous memory
2054 blocks into "zones", where each zone is a power of two number of
2055 pages. This option selects the largest power of two that the kernel
2056 keeps in the memory allocator. If you need to allocate very large
2057 blocks of physically contiguous memory, then you may need to
2058 increase this value.
2060 This config option is actually maximum order plus one. For example,
2061 a value of 11 means that the largest free memory block is 2^10 pages.
2063 The page size is not necessarily 4KB. Keep this in mind
2064 when choosing a value for this option.
2069 config IP22_CPU_SCACHE
2074 # Support for a MIPS32 / MIPS64 style S-caches
2076 config MIPS_CPU_SCACHE
2080 config R5000_CPU_SCACHE
2084 config RM7000_CPU_SCACHE
2088 config SIBYTE_DMA_PAGEOPS
2089 bool "Use DMA to clear/copy pages"
2092 Instead of using the CPU to zero and copy pages, use a Data Mover
2093 channel. These DMA channels are otherwise unused by the standard
2094 SiByte Linux port. Seems to give a small performance benefit.
2096 config CPU_HAS_PREFETCH
2099 config CPU_GENERIC_DUMP_TLB
2101 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2105 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2107 config CPU_R4K_CACHE_TLB
2109 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2112 bool "MIPS MT SMP support (1 TC on each available VPE)"
2113 depends on SYS_SUPPORTS_MULTITHREADING
2114 select CPU_MIPSR2_IRQ_VI
2115 select CPU_MIPSR2_IRQ_EI
2121 select SYS_SUPPORTS_SMP
2122 select SYS_SUPPORTS_SCHED_SMT
2123 select MIPS_PERF_SHARED_TC_COUNTERS
2125 This is a kernel model which is known as SMVP. This is supported
2126 on cores with the MT ASE and uses the available VPEs to implement
2127 virtual processors which supports SMP. This is equivalent to the
2128 Intel Hyperthreading feature. For further information go to
2129 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2135 bool "SMT (multithreading) scheduler support"
2136 depends on SYS_SUPPORTS_SCHED_SMT
2139 SMT scheduler support improves the CPU scheduler's decision making
2140 when dealing with MIPS MT enabled cores at a cost of slightly
2141 increased overhead in some places. If unsure say N here.
2143 config SYS_SUPPORTS_SCHED_SMT
2146 config SYS_SUPPORTS_MULTITHREADING
2149 config MIPS_MT_FPAFF
2150 bool "Dynamic FPU affinity for FP-intensive threads"
2152 depends on MIPS_MT_SMP
2154 config MIPSR2_TO_R6_EMULATOR
2155 bool "MIPS R2-to-R6 emulator"
2156 depends on CPU_MIPSR6 && !SMP
2159 Choose this option if you want to run non-R6 MIPS userland code.
2160 Even if you say 'Y' here, the emulator will still be disabled by
2161 default. You can enable it using the 'mipsr2emu' kernel option.
2162 The only reason this is a build-time option is to save ~14K from the
2164 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2165 depends on SMP && CPU_MIPSR6
2167 config MIPS_VPE_LOADER
2168 bool "VPE loader support."
2169 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2170 select CPU_MIPSR2_IRQ_VI
2171 select CPU_MIPSR2_IRQ_EI
2174 Includes a loader for loading an elf relocatable object
2175 onto another VPE and running it.
2177 config MIPS_VPE_LOADER_CMP
2180 depends on MIPS_VPE_LOADER && MIPS_CMP
2182 config MIPS_VPE_LOADER_MT
2185 depends on MIPS_VPE_LOADER && !MIPS_CMP
2187 config MIPS_VPE_LOADER_TOM
2188 bool "Load VPE program into memory hidden from linux"
2189 depends on MIPS_VPE_LOADER
2192 The loader can use memory that is present but has been hidden from
2193 Linux using the kernel command line option "mem=xxMB". It's up to
2194 you to ensure the amount you put in the option and the space your
2195 program requires is less or equal to the amount physically present.
2197 config MIPS_VPE_APSP_API
2198 bool "Enable support for AP/SP API (RTLX)"
2199 depends on MIPS_VPE_LOADER
2202 config MIPS_VPE_APSP_API_CMP
2205 depends on MIPS_VPE_APSP_API && MIPS_CMP
2207 config MIPS_VPE_APSP_API_MT
2210 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2213 bool "MIPS CMP framework support (DEPRECATED)"
2214 depends on SYS_SUPPORTS_MIPS_CMP
2218 select SYS_SUPPORTS_SMP
2219 select WEAK_ORDERING
2222 Select this if you are using a bootloader which implements the "CMP
2223 framework" protocol (ie. YAMON) and want your kernel to make use of
2224 its ability to start secondary CPUs.
2226 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2230 bool "MIPS Coherent Processing System support"
2231 depends on SYS_SUPPORTS_MIPS_CPS
2234 select MIPS_CPS_PM if HOTPLUG_CPU
2237 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2238 select SYS_SUPPORTS_HOTPLUG_CPU
2239 select SYS_SUPPORTS_SMP
2240 select WEAK_ORDERING
2242 Select this if you wish to run an SMP kernel across multiple cores
2243 within a MIPS Coherent Processing System. When this option is
2244 enabled the kernel will probe for other cores and boot them with
2245 no external assistance. It is safe to enable this when hardware
2246 support is unavailable.
2262 config SB1_PASS_2_WORKAROUNDS
2264 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2267 config SB1_PASS_2_1_WORKAROUNDS
2269 depends on CPU_SB1 && CPU_SB1_PASS_2
2273 config ARCH_PHYS_ADDR_T_64BIT
2277 prompt "SmartMIPS or microMIPS ASE support"
2279 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2282 Select this if you want neither microMIPS nor SmartMIPS support
2284 config CPU_HAS_SMARTMIPS
2285 depends on SYS_SUPPORTS_SMARTMIPS
2288 SmartMIPS is a extension of the MIPS32 architecture aimed at
2289 increased security at both hardware and software level for
2290 smartcards. Enabling this option will allow proper use of the
2291 SmartMIPS instructions by Linux applications. However a kernel with
2292 this option will not work on a MIPS core without SmartMIPS core. If
2293 you don't know you probably don't have SmartMIPS and should say N
2296 config CPU_MICROMIPS
2297 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2300 When this option is enabled the kernel will be built using the
2306 bool "Support for the MIPS SIMD Architecture (EXPERIMENTAL)"
2307 depends on CPU_SUPPORTS_MSA
2308 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2310 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2311 and a set of SIMD instructions to operate on them. When this option
2312 is enabled the kernel will support allocating & switching MSA
2313 vector register contexts. If you know that your kernel will only be
2314 running on CPUs which do not support MSA or that your userland will
2315 not be making use of it then you may wish to say N here to reduce
2316 the size & complexity of your kernel.
2327 # Vectored interrupt mode is an R2 feature
2329 config CPU_MIPSR2_IRQ_VI
2333 # Extended interrupt mode is an R2 feature
2335 config CPU_MIPSR2_IRQ_EI
2340 depends on !CPU_R3000
2346 config CPU_DADDI_WORKAROUNDS
2349 config CPU_R4000_WORKAROUNDS
2351 select CPU_R4400_WORKAROUNDS
2353 config CPU_R4400_WORKAROUNDS
2357 # - Highmem only makes sense for the 32-bit kernel.
2358 # - The current highmem code will only work properly on physically indexed
2359 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2360 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2361 # moment we protect the user and offer the highmem option only on machines
2362 # where it's known to be safe. This will not offer highmem on a few systems
2363 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2364 # indexed CPUs but we're playing safe.
2365 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2366 # know they might have memory configurations that could make use of highmem
2370 bool "High Memory Support"
2371 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2373 config CPU_SUPPORTS_HIGHMEM
2376 config SYS_SUPPORTS_HIGHMEM
2379 config SYS_SUPPORTS_SMARTMIPS
2382 config SYS_SUPPORTS_MICROMIPS
2385 config SYS_SUPPORTS_MIPS16
2388 This option must be set if a kernel might be executed on a MIPS16-
2389 enabled CPU even if MIPS16 is not actually being used. In other
2390 words, it makes the kernel MIPS16-tolerant.
2392 config CPU_SUPPORTS_MSA
2395 config ARCH_FLATMEM_ENABLE
2397 depends on !NUMA && !CPU_LOONGSON2
2399 config ARCH_DISCONTIGMEM_ENABLE
2401 default y if SGI_IP27
2403 Say Y to support efficient handling of discontiguous physical memory,
2404 for architectures which are either NUMA (Non-Uniform Memory Access)
2405 or have huge holes in the physical address space for other reasons.
2406 See <file:Documentation/vm/numa> for more.
2408 config ARCH_SPARSEMEM_ENABLE
2410 select SPARSEMEM_STATIC
2414 depends on SYS_SUPPORTS_NUMA
2416 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2417 Access). This option improves performance on systems with more
2418 than two nodes; on two node systems it is generally better to
2419 leave it disabled; on single node systems disable this option
2422 config SYS_SUPPORTS_NUMA
2428 depends on NEED_MULTIPLE_NODES
2430 config HW_PERF_EVENTS
2431 bool "Enable hardware performance counter support for perf events"
2432 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2435 Enable hardware performance counter support for perf events. If
2436 disabled, perf events will use software events only.
2441 bool "Multi-Processing support"
2442 depends on SYS_SUPPORTS_SMP
2444 This enables support for systems with more than one CPU. If you have
2445 a system with only one CPU, say N. If you have a system with more
2446 than one CPU, say Y.
2448 If you say N here, the kernel will run on uni- and multiprocessor
2449 machines, but will use only one CPU of a multiprocessor machine. If
2450 you say Y here, the kernel will run on many, but not all,
2451 uniprocessor machines. On a uniprocessor machine, the kernel
2452 will run faster if you say N here.
2454 People using multiprocessor machines who say Y here should also say
2455 Y to "Enhanced Real Time Clock Support", below.
2457 See also the SMP-HOWTO available at
2458 <http://www.tldp.org/docs.html#howto>.
2460 If you don't know what to do here, say N.
2465 config SYS_SUPPORTS_MIPS_CMP
2468 config SYS_SUPPORTS_MIPS_CPS
2471 config SYS_SUPPORTS_SMP
2474 config NR_CPUS_DEFAULT_4
2477 config NR_CPUS_DEFAULT_8
2480 config NR_CPUS_DEFAULT_16
2483 config NR_CPUS_DEFAULT_32
2486 config NR_CPUS_DEFAULT_64
2490 int "Maximum number of CPUs (2-256)"
2493 default "4" if NR_CPUS_DEFAULT_4
2494 default "8" if NR_CPUS_DEFAULT_8
2495 default "16" if NR_CPUS_DEFAULT_16
2496 default "32" if NR_CPUS_DEFAULT_32
2497 default "64" if NR_CPUS_DEFAULT_64
2499 This allows you to specify the maximum number of CPUs which this
2500 kernel will support. The maximum supported value is 32 for 32-bit
2501 kernel and 64 for 64-bit kernels; the minimum value which makes
2502 sense is 1 for Qemu (useful only for kernel debugging purposes)
2503 and 2 for all others.
2505 This is purely to save memory - each supported CPU adds
2506 approximately eight kilobytes to the kernel image. For best
2507 performance should round up your number of processors to the next
2510 config MIPS_PERF_SHARED_TC_COUNTERS
2514 # Timer Interrupt Frequency Configuration
2518 prompt "Timer frequency"
2521 Allows the configuration of the timer frequency.
2524 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2527 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2530 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2533 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2536 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2539 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2542 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2546 config SYS_SUPPORTS_48HZ
2549 config SYS_SUPPORTS_100HZ
2552 config SYS_SUPPORTS_128HZ
2555 config SYS_SUPPORTS_250HZ
2558 config SYS_SUPPORTS_256HZ
2561 config SYS_SUPPORTS_1000HZ
2564 config SYS_SUPPORTS_1024HZ
2567 config SYS_SUPPORTS_ARBIT_HZ
2569 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2570 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2571 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2572 !SYS_SUPPORTS_1024HZ
2577 default 100 if HZ_100
2578 default 128 if HZ_128
2579 default 250 if HZ_250
2580 default 256 if HZ_256
2581 default 1000 if HZ_1000
2582 default 1024 if HZ_1024
2585 def_bool HIGH_RES_TIMERS
2587 source "kernel/Kconfig.preempt"
2590 bool "Kexec system call"
2592 kexec is a system call that implements the ability to shutdown your
2593 current kernel, and to start another kernel. It is like a reboot
2594 but it is independent of the system firmware. And like a reboot
2595 you can start any kernel with it, not just Linux.
2597 The name comes from the similarity to the exec system call.
2599 It is an ongoing process to be certain the hardware in a machine
2600 is properly shutdown, so do not be surprised if this code does not
2601 initially work for you. As of this writing the exact hardware
2602 interface is strongly in flux, so no good recommendation can be
2606 bool "Kernel crash dumps"
2608 Generate crash dump after being started by kexec.
2609 This should be normally only set in special crash dump kernels
2610 which are loaded in the main kernel with kexec-tools into
2611 a specially reserved region and then later executed after
2612 a crash by kdump/kexec. The crash dump kernel must be compiled
2613 to a memory address not used by the main kernel or firmware using
2616 config PHYSICAL_START
2617 hex "Physical address where the kernel is loaded"
2618 default "0xffffffff84000000" if 64BIT
2619 default "0x84000000" if 32BIT
2620 depends on CRASH_DUMP
2622 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2623 If you plan to use kernel for capturing the crash dump change
2624 this value to start of the reserved region (the "X" value as
2625 specified in the "crashkernel=YM@XM" command line boot parameter
2626 passed to the panic-ed kernel).
2629 bool "Enable seccomp to safely compute untrusted bytecode"
2633 This kernel feature is useful for number crunching applications
2634 that may need to compute untrusted bytecode during their
2635 execution. By using pipes or other transports made available to
2636 the process as file descriptors supporting the read/write
2637 syscalls, it's possible to isolate those applications in
2638 their own address space using seccomp. Once seccomp is
2639 enabled via /proc/<pid>/seccomp, it cannot be disabled
2640 and the task is only allowed to execute a few safe syscalls
2641 defined by each seccomp mode.
2643 If unsure, say Y. Only embedded should say N here.
2645 config MIPS_O32_FP64_SUPPORT
2646 bool "Support for O32 binaries using 64-bit FP (EXPERIMENTAL)"
2647 depends on 32BIT || MIPS32_O32
2649 When this is enabled, the kernel will support use of 64-bit floating
2650 point registers with binaries using the O32 ABI along with the
2651 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2652 32-bit MIPS systems this support is at the cost of increasing the
2653 size and complexity of the compiled FPU emulator. Thus if you are
2654 running a MIPS32 system and know that none of your userland binaries
2655 will require 64-bit floating point, you may wish to reduce the size
2656 of your kernel & potentially improve FP emulation performance by
2659 Although binutils currently supports use of this flag the details
2660 concerning its effect upon the O32 ABI in userland are still being
2661 worked on. In order to avoid userland becoming dependant upon current
2662 behaviour before the details have been finalised, this option should
2663 be considered experimental and only enabled by those working upon
2671 select OF_EARLY_FLATTREE
2678 prompt "Kernel appended dtb support" if OF
2679 default MIPS_NO_APPENDED_DTB
2681 config MIPS_NO_APPENDED_DTB
2684 Do not enable appended dtb support.
2686 config MIPS_RAW_APPENDED_DTB
2689 With this option, the boot code will look for a device tree binary
2690 DTB) appended to raw vmlinux.bin (without decompressor).
2691 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2693 This is meant as a backward compatibility convenience for those
2694 systems with a bootloader that can't be upgraded to accommodate
2695 the documented boot protocol using a device tree.
2697 Beware that there is very little in terms of protection against
2698 this option being confused by leftover garbage in memory that might
2699 look like a DTB header after a reboot if no actual DTB is appended
2700 to vmlinux.bin. Do not leave this option active in a production kernel
2701 if you don't intend to always append a DTB.
2703 config MIPS_ZBOOT_APPENDED_DTB
2705 depends on SYS_SUPPORTS_ZBOOT
2707 With this option, the boot code will look for a device tree binary
2708 DTB) appended to raw vmlinuz.bin (with decompressor).
2709 (e.g. cat vmlinuz.bin <filename>.dtb > vmlinuz_w_dtb).
2711 This is meant as a backward compatibility convenience for those
2712 systems with a bootloader that can't be upgraded to accommodate
2713 the documented boot protocol using a device tree.
2715 Beware that there is very little in terms of protection against
2716 this option being confused by leftover garbage in memory that might
2717 look like a DTB header after a reboot if no actual DTB is appended
2718 to vmlinuz.bin. Do not leave this option active in a production kernel
2719 if you don't intend to always append a DTB.
2724 config LOCKDEP_SUPPORT
2728 config STACKTRACE_SUPPORT
2732 config PGTABLE_LEVELS
2734 default 3 if 64BIT && !PAGE_SIZE_64KB
2737 source "init/Kconfig"
2739 source "kernel/Kconfig.freezer"
2741 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2749 bool "Support for PCI controller"
2750 depends on HW_HAS_PCI
2752 select NO_GENERIC_PCI_IOPORT_MAP
2754 Find out whether you have a PCI motherboard. PCI is the name of a
2755 bus system, i.e. the way the CPU talks to the other stuff inside
2756 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2760 bool "Support for HT-linked PCI"
2762 depends on CPU_LOONGSON3
2766 Loongson family machines use Hyper-Transport bus for inter-core
2767 connection and device connection. The PCI bus is a subordinate
2768 linked at HT. Choose Y for Loongson-3 based machines.
2773 source "drivers/pci/Kconfig"
2775 source "drivers/pci/pcie/Kconfig"
2778 # ISA support is now enabled via select. Too many systems still have the one
2779 # or other ISA chip on the board that users don't know about so don't expect
2780 # users to choose the right thing ...
2787 depends on HW_HAS_EISA
2789 select GENERIC_ISA_DMA
2791 The Extended Industry Standard Architecture (EISA) bus was
2792 developed as an open alternative to the IBM MicroChannel bus.
2794 The EISA bus provided some of the features of the IBM MicroChannel
2795 bus while maintaining backward compatibility with cards made for
2796 the older ISA bus. The EISA bus saw limited use between 1988 and
2797 1995 when it was made obsolete by the PCI bus.
2799 Say Y here if you are building a kernel for an EISA-based machine.
2803 source "drivers/eisa/Kconfig"
2806 bool "TURBOchannel support"
2807 depends on MACH_DECSTATION
2809 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2810 processors. TURBOchannel programming specifications are available
2812 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2814 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2815 Linux driver support status is documented at:
2816 <http://www.linux-mips.org/wiki/DECstation>
2826 select MIPS_EXTERNAL_TIMER
2834 source "drivers/pcmcia/Kconfig"
2836 source "drivers/pci/hotplug/Kconfig"
2839 tristate "RapidIO support"
2843 If you say Y here, the kernel will include drivers and
2844 infrastructure code to support RapidIO interconnect devices.
2846 source "drivers/rapidio/Kconfig"
2850 menu "Executable file formats"
2852 source "fs/Kconfig.binfmt"
2857 config MIPS32_COMPAT
2863 config SYSVIPC_COMPAT
2867 bool "Kernel support for o32 binaries"
2869 select ARCH_WANT_OLD_COMPAT_IPC
2871 select MIPS32_COMPAT
2872 select SYSVIPC_COMPAT if SYSVIPC
2874 Select this option if you want to run o32 binaries. These are pure
2875 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2876 existing binaries are in this format.
2881 bool "Kernel support for n32 binaries"
2884 select MIPS32_COMPAT
2885 select SYSVIPC_COMPAT if SYSVIPC
2887 Select this option if you want to run n32 binaries. These are
2888 64-bit binaries using 32-bit quantities for addressing and certain
2889 data that would normally be 64-bit. They are used in special
2896 default y if MIPS32_O32 || MIPS32_N32
2900 menu "Power management options"
2902 config ARCH_HIBERNATION_POSSIBLE
2904 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2906 config ARCH_SUSPEND_POSSIBLE
2908 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2910 source "kernel/power/Kconfig"
2914 config MIPS_EXTERNAL_TIMER
2917 menu "CPU Power Management"
2919 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2920 source "drivers/cpufreq/Kconfig"
2923 source "drivers/cpuidle/Kconfig"
2927 source "net/Kconfig"
2929 source "drivers/Kconfig"
2931 source "drivers/firmware/Kconfig"
2935 source "arch/mips/Kconfig.debug"
2937 source "security/Kconfig"
2939 source "crypto/Kconfig"
2941 source "lib/Kconfig"
2943 source "arch/mips/kvm/Kconfig"