4 select ARCH_MIGHT_HAVE_PC_PARPORT
5 select ARCH_MIGHT_HAVE_PC_SERIO
6 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
7 select HAVE_CONTEXT_TRACKING
8 select HAVE_GENERIC_DMA_COHERENT
11 select HAVE_PERF_EVENTS
12 select PERF_USE_VMALLOC
14 select HAVE_ARCH_SECCOMP_FILTER
15 select HAVE_ARCH_TRACEHOOK
16 select HAVE_BPF_JIT if !CPU_MICROMIPS
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 DMA_NONCOHERENT
155 select SYS_SUPPORTS_32BIT_KERNEL
156 select SYS_SUPPORTS_LITTLE_ENDIAN
157 select SYS_SUPPORTS_BIG_ENDIAN
158 select SYS_SUPPORTS_HIGHMEM
159 select SYS_HAS_CPU_BMIPS32_3300
160 select SYS_HAS_CPU_BMIPS4350
161 select SYS_HAS_CPU_BMIPS4380
162 select SYS_HAS_CPU_BMIPS5000
164 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
165 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
166 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
167 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
169 Build a generic DT-based kernel image that boots on select
170 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
171 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
172 must be set appropriately for your board.
175 bool "Broadcom BCM47XX based boards"
176 select ARCH_WANT_OPTIONAL_GPIOLIB
180 select DMA_NONCOHERENT
183 select SYS_HAS_CPU_MIPS32_R1
184 select NO_EXCEPT_FILL
185 select SYS_SUPPORTS_32BIT_KERNEL
186 select SYS_SUPPORTS_LITTLE_ENDIAN
187 select SYS_SUPPORTS_MIPS16
188 select SYS_HAS_EARLY_PRINTK
189 select USE_GENERIC_EARLY_PRINTK_8250
191 select LEDS_GPIO_REGISTER
194 Support for BCM47XX based boards
197 bool "Broadcom BCM63XX based boards"
202 select DMA_NONCOHERENT
204 select SYS_SUPPORTS_32BIT_KERNEL
205 select SYS_SUPPORTS_BIG_ENDIAN
206 select SYS_HAS_EARLY_PRINTK
208 select ARCH_REQUIRE_GPIOLIB
210 select MIPS_L1_CACHE_SHIFT_4
212 Support for BCM63XX based boards
219 select DMA_NONCOHERENT
225 select PCI_GT64XXX_PCI0
227 select SYS_HAS_CPU_NEVADA
228 select SYS_HAS_EARLY_PRINTK
229 select SYS_SUPPORTS_32BIT_KERNEL
230 select SYS_SUPPORTS_64BIT_KERNEL
231 select SYS_SUPPORTS_LITTLE_ENDIAN
232 select USE_GENERIC_EARLY_PRINTK_8250
234 config MACH_DECSTATION
238 select CEVT_R4K if CPU_R4X00
240 select CSRC_R4K if CPU_R4X00
241 select CPU_DADDI_WORKAROUNDS if 64BIT
242 select CPU_R4000_WORKAROUNDS if 64BIT
243 select CPU_R4400_WORKAROUNDS if 64BIT
244 select DMA_NONCOHERENT
247 select SYS_HAS_CPU_R3000
248 select SYS_HAS_CPU_R4X00
249 select SYS_SUPPORTS_32BIT_KERNEL
250 select SYS_SUPPORTS_64BIT_KERNEL
251 select SYS_SUPPORTS_LITTLE_ENDIAN
252 select SYS_SUPPORTS_128HZ
253 select SYS_SUPPORTS_256HZ
254 select SYS_SUPPORTS_1024HZ
255 select MIPS_L1_CACHE_SHIFT_4
257 This enables support for DEC's MIPS based workstations. For details
258 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
259 DECstation porting pages on <http://decstation.unix-ag.org/>.
261 If you have one of the following DECstation Models you definitely
262 want to choose R4xx0 for the CPU Type:
269 otherwise choose R3000.
272 bool "Jazz family of machines"
275 select ARCH_MAY_HAVE_PC_FDC
278 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
279 select GENERIC_ISA_DMA
280 select HAVE_PCSPKR_PLATFORM
285 select SYS_HAS_CPU_R4X00
286 select SYS_SUPPORTS_32BIT_KERNEL
287 select SYS_SUPPORTS_64BIT_KERNEL
288 select SYS_SUPPORTS_100HZ
290 This a family of machines based on the MIPS R4030 chipset which was
291 used by several vendors to build RISC/os and Windows NT workstations.
292 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
293 Olivetti M700-10 workstations.
296 bool "Ingenic SoC based machines"
297 select SYS_SUPPORTS_32BIT_KERNEL
298 select SYS_SUPPORTS_LITTLE_ENDIAN
299 select SYS_SUPPORTS_ZBOOT_UART16550
300 select DMA_NONCOHERENT
302 select ARCH_REQUIRE_GPIOLIB
304 select GENERIC_IRQ_CHIP
310 bool "Lantiq based platforms"
311 select DMA_NONCOHERENT
315 select SYS_HAS_CPU_MIPS32_R1
316 select SYS_HAS_CPU_MIPS32_R2
317 select SYS_SUPPORTS_BIG_ENDIAN
318 select SYS_SUPPORTS_32BIT_KERNEL
319 select SYS_SUPPORTS_MIPS16
320 select SYS_SUPPORTS_MULTITHREADING
321 select SYS_HAS_EARLY_PRINTK
322 select ARCH_REQUIRE_GPIOLIB
325 select HAVE_MACH_CLKDEV
329 select PINCTRL_LANTIQ
330 select ARCH_HAS_RESET_CONTROLLER
331 select RESET_CONTROLLER
334 bool "LASAT Networks platforms"
338 select DMA_NONCOHERENT
339 select SYS_HAS_EARLY_PRINTK
342 select PCI_GT64XXX_PCI0
344 select R5000_CPU_SCACHE
345 select SYS_HAS_CPU_R5000
346 select SYS_SUPPORTS_32BIT_KERNEL
347 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
348 select SYS_SUPPORTS_LITTLE_ENDIAN
350 config MACH_LOONGSON32
351 bool "Loongson-1 family of machines"
352 select SYS_SUPPORTS_ZBOOT
354 This enables support for the Loongson-1 family of machines.
356 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
357 the Institute of Computing Technology (ICT), Chinese Academy of
360 config MACH_LOONGSON64
361 bool "Loongson-2/3 family of machines"
362 select SYS_SUPPORTS_ZBOOT
364 This enables the support of Loongson-2/3 family of machines.
366 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
367 family of multi-core CPUs. They are both 64-bit general-purpose
368 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
369 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
370 in the People's Republic of China. The chief architect is Professor
373 config MACH_PISTACHIO
374 bool "IMG Pistachio SoC based boards"
375 select ARCH_REQUIRE_GPIOLIB
379 select CLKSRC_MIPS_GIC
382 select DMA_MAYBE_COHERENT
386 select MIPS_CPU_SCACHE
390 select SYS_HAS_CPU_MIPS32_R2
391 select SYS_SUPPORTS_32BIT_KERNEL
392 select SYS_SUPPORTS_LITTLE_ENDIAN
393 select SYS_SUPPORTS_MIPS_CPS
394 select SYS_SUPPORTS_MULTITHREADING
395 select SYS_SUPPORTS_ZBOOT
396 select SYS_HAS_EARLY_PRINTK
397 select USE_GENERIC_EARLY_PRINTK_8250
400 This enables support for the IMG Pistachio SoC platform.
403 bool "MIPS Malta board"
404 select ARCH_MAY_HAVE_PC_FDC
410 select CLKSRC_MIPS_GIC
411 select DMA_MAYBE_COHERENT
412 select GENERIC_ISA_DMA
413 select HAVE_PCSPKR_PLATFORM
420 select MIPS_CPU_SCACHE
421 select MIPS_L1_CACHE_SHIFT_6
422 select PCI_GT64XXX_PCI0
425 select SYS_HAS_CPU_MIPS32_R1
426 select SYS_HAS_CPU_MIPS32_R2
427 select SYS_HAS_CPU_MIPS32_R3_5
428 select SYS_HAS_CPU_MIPS32_R5
429 select SYS_HAS_CPU_MIPS32_R6
430 select SYS_HAS_CPU_MIPS64_R1
431 select SYS_HAS_CPU_MIPS64_R2
432 select SYS_HAS_CPU_MIPS64_R6
433 select SYS_HAS_CPU_NEVADA
434 select SYS_HAS_CPU_RM7000
435 select SYS_SUPPORTS_32BIT_KERNEL
436 select SYS_SUPPORTS_64BIT_KERNEL
437 select SYS_SUPPORTS_BIG_ENDIAN
438 select SYS_SUPPORTS_HIGHMEM
439 select SYS_SUPPORTS_LITTLE_ENDIAN
440 select SYS_SUPPORTS_MICROMIPS
441 select SYS_SUPPORTS_MIPS_CMP
442 select SYS_SUPPORTS_MIPS_CPS
443 select SYS_SUPPORTS_MIPS16
444 select SYS_SUPPORTS_MULTITHREADING
445 select SYS_SUPPORTS_SMARTMIPS
446 select SYS_SUPPORTS_ZBOOT
448 select ZONE_DMA32 if 64BIT
450 This enables support for the MIPS Technologies Malta evaluation
454 bool "MIPS SEAD3 board"
460 select CLKSRC_MIPS_GIC
461 select CPU_MIPSR2_IRQ_VI
462 select CPU_MIPSR2_IRQ_EI
463 select DMA_NONCOHERENT
468 select SYS_HAS_CPU_MIPS32_R1
469 select SYS_HAS_CPU_MIPS32_R2
470 select SYS_HAS_CPU_MIPS64_R1
471 select SYS_HAS_EARLY_PRINTK
472 select SYS_SUPPORTS_32BIT_KERNEL
473 select SYS_SUPPORTS_64BIT_KERNEL
474 select SYS_SUPPORTS_BIG_ENDIAN
475 select SYS_SUPPORTS_LITTLE_ENDIAN
476 select SYS_SUPPORTS_SMARTMIPS
477 select SYS_SUPPORTS_MICROMIPS
478 select SYS_SUPPORTS_MIPS16
479 select USB_EHCI_BIG_ENDIAN_DESC
480 select USB_EHCI_BIG_ENDIAN_MMIO
483 This enables support for the MIPS Technologies SEAD3 evaluation
487 bool "NEC EMMA2RH Mark-eins board"
491 This enables support for the NEC Electronics Mark-eins boards.
494 bool "NEC VR4100 series based machines"
497 select SYS_HAS_CPU_VR41XX
498 select SYS_SUPPORTS_MIPS16
499 select ARCH_REQUIRE_GPIOLIB
502 bool "NXP STB220 board"
505 Support for NXP Semiconductors STB220 Development Board.
512 Support for NXP Semiconductors STB225 Development Board.
515 bool "PMC-Sierra MSP chipsets"
518 select DMA_NONCOHERENT
520 select NO_EXCEPT_FILL
522 select SYS_HAS_CPU_MIPS32_R1
523 select SYS_HAS_CPU_MIPS32_R2
524 select SYS_SUPPORTS_32BIT_KERNEL
525 select SYS_SUPPORTS_BIG_ENDIAN
526 select SYS_SUPPORTS_MIPS16
529 select SERIAL_8250_CONSOLE
530 select USB_EHCI_BIG_ENDIAN_MMIO
531 select USB_EHCI_BIG_ENDIAN_DESC
533 This adds support for the PMC-Sierra family of Multi-Service
534 Processor System-On-A-Chips. These parts include a number
535 of integrated peripherals, interfaces and DSPs in addition to
536 a variety of MIPS cores.
539 bool "Ralink based machines"
543 select DMA_NONCOHERENT
546 select SYS_HAS_CPU_MIPS32_R1
547 select SYS_HAS_CPU_MIPS32_R2
548 select SYS_SUPPORTS_32BIT_KERNEL
549 select SYS_SUPPORTS_LITTLE_ENDIAN
550 select SYS_SUPPORTS_MIPS16
551 select SYS_HAS_EARLY_PRINTK
552 select HAVE_MACH_CLKDEV
554 select ARCH_HAS_RESET_CONTROLLER
555 select RESET_CONTROLLER
558 bool "SGI IP22 (Indy/Indigo2)"
564 select DEFAULT_SGI_PARTITION
565 select DMA_NONCOHERENT
569 select IP22_CPU_SCACHE
571 select GENERIC_ISA_DMA_SUPPORT_BROKEN
573 select SGI_HAS_INDYDOG
579 select SYS_HAS_CPU_R4X00
580 select SYS_HAS_CPU_R5000
582 # Disable EARLY_PRINTK for now since it leads to overwritten prom
583 # memory during early boot on some machines.
585 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
586 # for a more details discussion
588 # select SYS_HAS_EARLY_PRINTK
589 select SYS_SUPPORTS_32BIT_KERNEL
590 select SYS_SUPPORTS_64BIT_KERNEL
591 select SYS_SUPPORTS_BIG_ENDIAN
592 select MIPS_L1_CACHE_SHIFT_7
594 This are the SGI Indy, Challenge S and Indigo2, as well as certain
595 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
596 that runs on these, say Y here.
599 bool "SGI IP27 (Origin200/2000)"
603 select DEFAULT_SGI_PARTITION
605 select SYS_HAS_EARLY_PRINTK
607 select NR_CPUS_DEFAULT_64
608 select SYS_HAS_CPU_R10000
609 select SYS_SUPPORTS_64BIT_KERNEL
610 select SYS_SUPPORTS_BIG_ENDIAN
611 select SYS_SUPPORTS_NUMA
612 select SYS_SUPPORTS_SMP
613 select MIPS_L1_CACHE_SHIFT_7
615 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
616 workstations. To compile a Linux kernel that runs on these, say Y
620 bool "SGI IP28 (Indigo2 R10k)"
626 select DEFAULT_SGI_PARTITION
627 select DMA_NONCOHERENT
628 select GENERIC_ISA_DMA_SUPPORT_BROKEN
634 select SGI_HAS_INDYDOG
640 select SYS_HAS_CPU_R10000
642 # Disable EARLY_PRINTK for now since it leads to overwritten prom
643 # memory during early boot on some machines.
645 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
646 # for a more details discussion
648 # select SYS_HAS_EARLY_PRINTK
649 select SYS_SUPPORTS_64BIT_KERNEL
650 select SYS_SUPPORTS_BIG_ENDIAN
651 select MIPS_L1_CACHE_SHIFT_7
653 This is the SGI Indigo2 with R10000 processor. To compile a Linux
654 kernel that runs on these, say Y here.
663 select DMA_NONCOHERENT
666 select R5000_CPU_SCACHE
667 select RM7000_CPU_SCACHE
668 select SYS_HAS_CPU_R5000
669 select SYS_HAS_CPU_R10000 if BROKEN
670 select SYS_HAS_CPU_RM7000
671 select SYS_HAS_CPU_NEVADA
672 select SYS_SUPPORTS_64BIT_KERNEL
673 select SYS_SUPPORTS_BIG_ENDIAN
675 If you want this kernel to run on SGI O2 workstation, say Y here.
678 bool "Sibyte BCM91120C-CRhine"
681 select SIBYTE_BCM1120
683 select SYS_HAS_CPU_SB1
684 select SYS_SUPPORTS_BIG_ENDIAN
685 select SYS_SUPPORTS_LITTLE_ENDIAN
688 bool "Sibyte BCM91120x-Carmel"
691 select SIBYTE_BCM1120
693 select SYS_HAS_CPU_SB1
694 select SYS_SUPPORTS_BIG_ENDIAN
695 select SYS_SUPPORTS_LITTLE_ENDIAN
698 bool "Sibyte BCM91125C-CRhone"
701 select SIBYTE_BCM1125
703 select SYS_HAS_CPU_SB1
704 select SYS_SUPPORTS_BIG_ENDIAN
705 select SYS_SUPPORTS_HIGHMEM
706 select SYS_SUPPORTS_LITTLE_ENDIAN
709 bool "Sibyte BCM91125E-Rhone"
712 select SIBYTE_BCM1125H
714 select SYS_HAS_CPU_SB1
715 select SYS_SUPPORTS_BIG_ENDIAN
716 select SYS_SUPPORTS_LITTLE_ENDIAN
719 bool "Sibyte BCM91250A-SWARM"
722 select HAVE_PATA_PLATFORM
725 select SYS_HAS_CPU_SB1
726 select SYS_SUPPORTS_BIG_ENDIAN
727 select SYS_SUPPORTS_HIGHMEM
728 select SYS_SUPPORTS_LITTLE_ENDIAN
729 select ZONE_DMA32 if 64BIT
731 config SIBYTE_LITTLESUR
732 bool "Sibyte BCM91250C2-LittleSur"
735 select HAVE_PATA_PLATFORM
738 select SYS_HAS_CPU_SB1
739 select SYS_SUPPORTS_BIG_ENDIAN
740 select SYS_SUPPORTS_HIGHMEM
741 select SYS_SUPPORTS_LITTLE_ENDIAN
743 config SIBYTE_SENTOSA
744 bool "Sibyte BCM91250E-Sentosa"
749 select SYS_HAS_CPU_SB1
750 select SYS_SUPPORTS_BIG_ENDIAN
751 select SYS_SUPPORTS_LITTLE_ENDIAN
754 bool "Sibyte BCM91480B-BigSur"
757 select NR_CPUS_DEFAULT_4
758 select SIBYTE_BCM1x80
760 select SYS_HAS_CPU_SB1
761 select SYS_SUPPORTS_BIG_ENDIAN
762 select SYS_SUPPORTS_HIGHMEM
763 select SYS_SUPPORTS_LITTLE_ENDIAN
764 select ZONE_DMA32 if 64BIT
767 bool "SNI RM200/300/400"
768 select FW_ARC if CPU_LITTLE_ENDIAN
769 select FW_ARC32 if CPU_LITTLE_ENDIAN
770 select FW_SNIPROM if CPU_BIG_ENDIAN
771 select ARCH_MAY_HAVE_PC_FDC
775 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
776 select DMA_NONCOHERENT
777 select GENERIC_ISA_DMA
778 select HAVE_PCSPKR_PLATFORM
785 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
786 select SYS_HAS_CPU_R4X00
787 select SYS_HAS_CPU_R5000
788 select SYS_HAS_CPU_R10000
789 select R5000_CPU_SCACHE
790 select SYS_HAS_EARLY_PRINTK
791 select SYS_SUPPORTS_32BIT_KERNEL
792 select SYS_SUPPORTS_64BIT_KERNEL
793 select SYS_SUPPORTS_BIG_ENDIAN
794 select SYS_SUPPORTS_HIGHMEM
795 select SYS_SUPPORTS_LITTLE_ENDIAN
797 The SNI RM200/300/400 are MIPS-based machines manufactured by
798 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
799 Technology and now in turn merged with Fujitsu. Say Y here to
800 support this machine type.
803 bool "Toshiba TX39 series based machines"
806 bool "Toshiba TX49 series based machines"
808 config MIKROTIK_RB532
809 bool "Mikrotik RB532 boards"
812 select DMA_NONCOHERENT
815 select SYS_HAS_CPU_MIPS32_R1
816 select SYS_SUPPORTS_32BIT_KERNEL
817 select SYS_SUPPORTS_LITTLE_ENDIAN
820 select ARCH_REQUIRE_GPIOLIB
821 select MIPS_L1_CACHE_SHIFT_4
823 Support the Mikrotik(tm) RouterBoard 532 series,
824 based on the IDT RC32434 SoC.
826 config CAVIUM_OCTEON_SOC
827 bool "Cavium Networks Octeon SoC based boards"
829 select ARCH_PHYS_ADDR_T_64BIT
831 select SYS_SUPPORTS_64BIT_KERNEL
832 select SYS_SUPPORTS_BIG_ENDIAN
834 select EDAC_ATOMIC_SCRUB
835 select SYS_SUPPORTS_LITTLE_ENDIAN
836 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
837 select SYS_HAS_EARLY_PRINTK
838 select SYS_HAS_CPU_CAVIUM_OCTEON
843 select ARCH_REQUIRE_GPIOLIB
846 select ARCH_SPARSEMEM_ENABLE
847 select SYS_SUPPORTS_SMP
848 select NR_CPUS_DEFAULT_16
850 select MTD_COMPLEX_MAPPINGS
852 This option supports all of the Octeon reference boards from Cavium
853 Networks. It builds a kernel that dynamically determines the Octeon
854 CPU type and supports all known board reference implementations.
855 Some of the supported boards are:
862 Say Y here for most Octeon reference boards.
865 bool "Netlogic XLR/XLS based systems"
868 select SYS_HAS_CPU_XLR
869 select SYS_SUPPORTS_SMP
872 select SYS_SUPPORTS_32BIT_KERNEL
873 select SYS_SUPPORTS_64BIT_KERNEL
874 select ARCH_PHYS_ADDR_T_64BIT
875 select SYS_SUPPORTS_BIG_ENDIAN
876 select SYS_SUPPORTS_HIGHMEM
878 select NR_CPUS_DEFAULT_32
882 select ZONE_DMA32 if 64BIT
884 select SYS_HAS_EARLY_PRINTK
885 select SYS_SUPPORTS_ZBOOT
886 select SYS_SUPPORTS_ZBOOT_UART16550
888 Support for systems based on Netlogic XLR and XLS processors.
889 Say Y here if you have a XLR or XLS based board.
892 bool "Netlogic XLP based systems"
895 select SYS_HAS_CPU_XLP
896 select SYS_SUPPORTS_SMP
898 select SYS_SUPPORTS_32BIT_KERNEL
899 select SYS_SUPPORTS_64BIT_KERNEL
900 select ARCH_PHYS_ADDR_T_64BIT
901 select SYS_SUPPORTS_BIG_ENDIAN
902 select SYS_SUPPORTS_LITTLE_ENDIAN
903 select SYS_SUPPORTS_HIGHMEM
905 select NR_CPUS_DEFAULT_32
909 select ZONE_DMA32 if 64BIT
911 select SYS_HAS_EARLY_PRINTK
913 select SYS_SUPPORTS_ZBOOT
914 select SYS_SUPPORTS_ZBOOT_UART16550
916 This board is based on Netlogic XLP Processor.
917 Say Y here if you have a XLP based board.
920 bool "Para-Virtualized guest system"
924 select SYS_SUPPORTS_64BIT_KERNEL
925 select SYS_SUPPORTS_32BIT_KERNEL
926 select SYS_SUPPORTS_BIG_ENDIAN
927 select SYS_SUPPORTS_SMP
928 select NR_CPUS_DEFAULT_4
929 select SYS_HAS_EARLY_PRINTK
930 select SYS_HAS_CPU_MIPS32_R2
931 select SYS_HAS_CPU_MIPS64_R2
932 select SYS_HAS_CPU_CAVIUM_OCTEON
936 This option supports guest running under ????
940 source "arch/mips/alchemy/Kconfig"
941 source "arch/mips/ath25/Kconfig"
942 source "arch/mips/ath79/Kconfig"
943 source "arch/mips/bcm47xx/Kconfig"
944 source "arch/mips/bcm63xx/Kconfig"
945 source "arch/mips/bmips/Kconfig"
946 source "arch/mips/jazz/Kconfig"
947 source "arch/mips/jz4740/Kconfig"
948 source "arch/mips/lantiq/Kconfig"
949 source "arch/mips/lasat/Kconfig"
950 source "arch/mips/pmcs-msp71xx/Kconfig"
951 source "arch/mips/ralink/Kconfig"
952 source "arch/mips/sgi-ip27/Kconfig"
953 source "arch/mips/sibyte/Kconfig"
954 source "arch/mips/txx9/Kconfig"
955 source "arch/mips/vr41xx/Kconfig"
956 source "arch/mips/cavium-octeon/Kconfig"
957 source "arch/mips/loongson32/Kconfig"
958 source "arch/mips/loongson64/Kconfig"
959 source "arch/mips/netlogic/Kconfig"
960 source "arch/mips/paravirt/Kconfig"
964 config RWSEM_GENERIC_SPINLOCK
968 config RWSEM_XCHGADD_ALGORITHM
971 config ARCH_HAS_ILOG2_U32
975 config ARCH_HAS_ILOG2_U64
979 config GENERIC_HWEIGHT
983 config GENERIC_CALIBRATE_DELAY
987 config SCHED_OMIT_FRAME_POINTER
992 # Select some configuration options automatically based on user selections.
997 config ARCH_MAY_HAVE_PC_FDC
1034 select ARCH_REQUIRE_GPIOLIB
1040 config ARCH_DMA_ADDR_T_64BIT
1041 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1043 config DMA_MAYBE_COHERENT
1044 select DMA_NONCOHERENT
1050 config DMA_NONCOHERENT
1052 select NEED_DMA_MAP_STATE
1054 config NEED_DMA_MAP_STATE
1057 config SYS_HAS_EARLY_PRINTK
1061 bool "Support for hot-pluggable CPUs"
1062 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
1064 Say Y here to allow turning CPUs off and on. CPUs can be
1065 controlled through /sys/devices/system/cpu.
1066 (Note: power management support will enable this option
1067 automatically on SMP systems. )
1068 Say N if you want to disable CPU hotplug.
1070 config SYS_SUPPORTS_HOTPLUG_CPU
1077 config MIPS_BONITO64
1092 config NO_IOPORT_MAP
1098 config GENERIC_ISA_DMA
1100 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1103 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1105 select GENERIC_ISA_DMA
1110 config HOLES_IN_ZONE
1114 # Endianness selection. Sufficiently obscure so many users don't know what to
1115 # answer,so we try hard to limit the available choices. Also the use of a
1116 # choice statement should be more obvious to the user.
1119 prompt "Endianness selection"
1121 Some MIPS machines can be configured for either little or big endian
1122 byte order. These modes require different kernels and a different
1123 Linux distribution. In general there is one preferred byteorder for a
1124 particular system but some systems are just as commonly used in the
1125 one or the other endianness.
1127 config CPU_BIG_ENDIAN
1129 depends on SYS_SUPPORTS_BIG_ENDIAN
1131 config CPU_LITTLE_ENDIAN
1132 bool "Little endian"
1133 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1140 config SYS_SUPPORTS_APM_EMULATION
1143 config SYS_SUPPORTS_BIG_ENDIAN
1146 config SYS_SUPPORTS_LITTLE_ENDIAN
1149 config SYS_SUPPORTS_HUGETLBFS
1151 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1154 config MIPS_HUGE_TLB_SUPPORT
1155 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1172 config PCI_GT64XXX_PCI0
1175 config NO_EXCEPT_FILL
1182 select DMA_NONCOHERENT
1184 select SWAP_IO_SPACE
1185 select SYS_HAS_CPU_R5500
1186 select SYS_SUPPORTS_32BIT_KERNEL
1187 select SYS_SUPPORTS_64BIT_KERNEL
1188 select SYS_SUPPORTS_BIG_ENDIAN
1195 select DMA_NONCOHERENT
1196 select SYS_HAS_CPU_MIPS32_R2
1197 select SYS_SUPPORTS_32BIT_KERNEL
1198 select SYS_SUPPORTS_LITTLE_ENDIAN
1199 select SYS_SUPPORTS_BIG_ENDIAN
1200 select SYS_SUPPORTS_MIPS16
1201 select CPU_MIPSR2_IRQ_VI
1210 config SWAP_IO_SPACE
1213 config SGI_HAS_INDYDOG
1225 config SGI_HAS_ZILOG
1228 config SGI_HAS_I8042
1231 config DEFAULT_SGI_PARTITION
1243 config MIPS_L1_CACHE_SHIFT_4
1246 config MIPS_L1_CACHE_SHIFT_5
1249 config MIPS_L1_CACHE_SHIFT_6
1252 config MIPS_L1_CACHE_SHIFT_7
1255 config MIPS_L1_CACHE_SHIFT
1257 default "7" if MIPS_L1_CACHE_SHIFT_7
1258 default "6" if MIPS_L1_CACHE_SHIFT_6
1259 default "5" if MIPS_L1_CACHE_SHIFT_5
1260 default "4" if MIPS_L1_CACHE_SHIFT_4
1263 config HAVE_STD_PC_SERIAL_PORT
1267 bool "ARC console support"
1268 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1272 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1277 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1286 menu "CPU selection"
1292 config CPU_LOONGSON3
1293 bool "Loongson 3 CPU"
1294 depends on SYS_HAS_CPU_LOONGSON3
1295 select CPU_SUPPORTS_64BIT_KERNEL
1296 select CPU_SUPPORTS_HIGHMEM
1297 select CPU_SUPPORTS_HUGEPAGES
1298 select WEAK_ORDERING
1299 select WEAK_REORDERING_BEYOND_LLSC
1300 select ARCH_REQUIRE_GPIOLIB
1302 The Loongson 3 processor implements the MIPS64R2 instruction
1303 set with many extensions.
1305 config CPU_LOONGSON2E
1307 depends on SYS_HAS_CPU_LOONGSON2E
1308 select CPU_LOONGSON2
1310 The Loongson 2E processor implements the MIPS III instruction set
1311 with many extensions.
1313 It has an internal FPGA northbridge, which is compatible to
1316 config CPU_LOONGSON2F
1318 depends on SYS_HAS_CPU_LOONGSON2F
1319 select CPU_LOONGSON2
1320 select ARCH_REQUIRE_GPIOLIB
1322 The Loongson 2F processor implements the MIPS III instruction set
1323 with many extensions.
1325 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1326 have a similar programming interface with FPGA northbridge used in
1329 config CPU_LOONGSON1B
1331 depends on SYS_HAS_CPU_LOONGSON1B
1332 select CPU_LOONGSON1
1334 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1335 release 2 instruction set.
1337 config CPU_MIPS32_R1
1338 bool "MIPS32 Release 1"
1339 depends on SYS_HAS_CPU_MIPS32_R1
1340 select CPU_HAS_PREFETCH
1341 select CPU_SUPPORTS_32BIT_KERNEL
1342 select CPU_SUPPORTS_HIGHMEM
1344 Choose this option to build a kernel for release 1 or later of the
1345 MIPS32 architecture. Most modern embedded systems with a 32-bit
1346 MIPS processor are based on a MIPS32 processor. If you know the
1347 specific type of processor in your system, choose those that one
1348 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1349 Release 2 of the MIPS32 architecture is available since several
1350 years so chances are you even have a MIPS32 Release 2 processor
1351 in which case you should choose CPU_MIPS32_R2 instead for better
1354 config CPU_MIPS32_R2
1355 bool "MIPS32 Release 2"
1356 depends on SYS_HAS_CPU_MIPS32_R2
1357 select CPU_HAS_PREFETCH
1358 select CPU_SUPPORTS_32BIT_KERNEL
1359 select CPU_SUPPORTS_HIGHMEM
1360 select CPU_SUPPORTS_MSA
1363 Choose this option to build a kernel for release 2 or later of the
1364 MIPS32 architecture. Most modern embedded systems with a 32-bit
1365 MIPS processor are based on a MIPS32 processor. If you know the
1366 specific type of processor in your system, choose those that one
1367 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1369 config CPU_MIPS32_R6
1370 bool "MIPS32 Release 6"
1371 depends on SYS_HAS_CPU_MIPS32_R6
1372 select CPU_HAS_PREFETCH
1373 select CPU_SUPPORTS_32BIT_KERNEL
1374 select CPU_SUPPORTS_HIGHMEM
1375 select CPU_SUPPORTS_MSA
1378 select MIPS_O32_FP64_SUPPORT
1380 Choose this option to build a kernel for release 6 or later of the
1381 MIPS32 architecture. New MIPS processors, starting with the Warrior
1382 family, are based on a MIPS32r6 processor. If you own an older
1383 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1385 config CPU_MIPS64_R1
1386 bool "MIPS64 Release 1"
1387 depends on SYS_HAS_CPU_MIPS64_R1
1388 select CPU_HAS_PREFETCH
1389 select CPU_SUPPORTS_32BIT_KERNEL
1390 select CPU_SUPPORTS_64BIT_KERNEL
1391 select CPU_SUPPORTS_HIGHMEM
1392 select CPU_SUPPORTS_HUGEPAGES
1394 Choose this option to build a kernel for release 1 or later of the
1395 MIPS64 architecture. Many modern embedded systems with a 64-bit
1396 MIPS processor are based on a MIPS64 processor. If you know the
1397 specific type of processor in your system, choose those that one
1398 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1399 Release 2 of the MIPS64 architecture is available since several
1400 years so chances are you even have a MIPS64 Release 2 processor
1401 in which case you should choose CPU_MIPS64_R2 instead for better
1404 config CPU_MIPS64_R2
1405 bool "MIPS64 Release 2"
1406 depends on SYS_HAS_CPU_MIPS64_R2
1407 select CPU_HAS_PREFETCH
1408 select CPU_SUPPORTS_32BIT_KERNEL
1409 select CPU_SUPPORTS_64BIT_KERNEL
1410 select CPU_SUPPORTS_HIGHMEM
1411 select CPU_SUPPORTS_HUGEPAGES
1412 select CPU_SUPPORTS_MSA
1414 Choose this option to build a kernel for release 2 or later of the
1415 MIPS64 architecture. Many modern embedded systems with a 64-bit
1416 MIPS processor are based on a MIPS64 processor. If you know the
1417 specific type of processor in your system, choose those that one
1418 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1420 config CPU_MIPS64_R6
1421 bool "MIPS64 Release 6"
1422 depends on SYS_HAS_CPU_MIPS64_R6
1423 select CPU_HAS_PREFETCH
1424 select CPU_SUPPORTS_32BIT_KERNEL
1425 select CPU_SUPPORTS_64BIT_KERNEL
1426 select CPU_SUPPORTS_HIGHMEM
1427 select CPU_SUPPORTS_MSA
1429 select MIPS_O32_FP64_SUPPORT if MIPS32_O32
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.
1973 bool "64-bit kernel"
1974 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1976 Select this option if you want to build a 64-bit kernel.
1981 bool "KVM Guest Kernel"
1982 depends on BROKEN_ON_SMP
1984 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1986 config KVM_GUEST_TIMER_FREQ
1987 int "Count/Compare Timer Frequency (MHz)"
1988 depends on KVM_GUEST
1991 Set this to non-zero if building a guest kernel for KVM to skip RTC
1992 emulation when determining guest CPU Frequency. Instead, the guest's
1993 timer frequency is specified directly.
1996 prompt "Kernel page size"
1997 default PAGE_SIZE_4KB
1999 config PAGE_SIZE_4KB
2001 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2003 This option select the standard 4kB Linux page size. On some
2004 R3000-family processors this is the only available page size. Using
2005 4kB page size will minimize memory consumption and is therefore
2006 recommended for low memory systems.
2008 config PAGE_SIZE_8KB
2010 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2012 Using 8kB page size will result in higher performance kernel at
2013 the price of higher memory consumption. This option is available
2014 only on R8000 and cnMIPS processors. Note that you will need a
2015 suitable Linux distribution to support this.
2017 config PAGE_SIZE_16KB
2019 depends on !CPU_R3000 && !CPU_TX39XX
2021 Using 16kB page size will result in higher performance kernel at
2022 the price of higher memory consumption. This option is available on
2023 all non-R3000 family processors. Note that you will need a suitable
2024 Linux distribution to support this.
2026 config PAGE_SIZE_32KB
2028 depends on CPU_CAVIUM_OCTEON
2030 Using 32kB page size will result in higher performance kernel at
2031 the price of higher memory consumption. This option is available
2032 only on cnMIPS cores. Note that you will need a suitable Linux
2033 distribution to support this.
2035 config PAGE_SIZE_64KB
2037 depends on !CPU_R3000 && !CPU_TX39XX
2039 Using 64kB page size will result in higher performance kernel at
2040 the price of higher memory consumption. This option is available on
2041 all non-R3000 family processor. Not that at the time of this
2042 writing this option is still high experimental.
2046 config FORCE_MAX_ZONEORDER
2047 int "Maximum zone order"
2048 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2049 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2050 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2051 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2052 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2053 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2057 The kernel memory allocator divides physically contiguous memory
2058 blocks into "zones", where each zone is a power of two number of
2059 pages. This option selects the largest power of two that the kernel
2060 keeps in the memory allocator. If you need to allocate very large
2061 blocks of physically contiguous memory, then you may need to
2062 increase this value.
2064 This config option is actually maximum order plus one. For example,
2065 a value of 11 means that the largest free memory block is 2^10 pages.
2067 The page size is not necessarily 4KB. Keep this in mind
2068 when choosing a value for this option.
2073 config IP22_CPU_SCACHE
2078 # Support for a MIPS32 / MIPS64 style S-caches
2080 config MIPS_CPU_SCACHE
2084 config R5000_CPU_SCACHE
2088 config RM7000_CPU_SCACHE
2092 config SIBYTE_DMA_PAGEOPS
2093 bool "Use DMA to clear/copy pages"
2096 Instead of using the CPU to zero and copy pages, use a Data Mover
2097 channel. These DMA channels are otherwise unused by the standard
2098 SiByte Linux port. Seems to give a small performance benefit.
2100 config CPU_HAS_PREFETCH
2103 config CPU_GENERIC_DUMP_TLB
2105 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2109 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2111 config CPU_R4K_CACHE_TLB
2113 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2116 bool "MIPS MT SMP support (1 TC on each available VPE)"
2117 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2118 select CPU_MIPSR2_IRQ_VI
2119 select CPU_MIPSR2_IRQ_EI
2125 select SYS_SUPPORTS_SMP
2126 select SYS_SUPPORTS_SCHED_SMT
2127 select MIPS_PERF_SHARED_TC_COUNTERS
2129 This is a kernel model which is known as SMVP. This is supported
2130 on cores with the MT ASE and uses the available VPEs to implement
2131 virtual processors which supports SMP. This is equivalent to the
2132 Intel Hyperthreading feature. For further information go to
2133 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2139 bool "SMT (multithreading) scheduler support"
2140 depends on SYS_SUPPORTS_SCHED_SMT
2143 SMT scheduler support improves the CPU scheduler's decision making
2144 when dealing with MIPS MT enabled cores at a cost of slightly
2145 increased overhead in some places. If unsure say N here.
2147 config SYS_SUPPORTS_SCHED_SMT
2150 config SYS_SUPPORTS_MULTITHREADING
2153 config MIPS_MT_FPAFF
2154 bool "Dynamic FPU affinity for FP-intensive threads"
2156 depends on MIPS_MT_SMP
2158 config MIPSR2_TO_R6_EMULATOR
2159 bool "MIPS R2-to-R6 emulator"
2160 depends on CPU_MIPSR6 && !SMP
2163 Choose this option if you want to run non-R6 MIPS userland code.
2164 Even if you say 'Y' here, the emulator will still be disabled by
2165 default. You can enable it using the 'mipsr2emu' kernel option.
2166 The only reason this is a build-time option is to save ~14K from the
2168 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2169 depends on SMP && CPU_MIPSR6
2171 config MIPS_VPE_LOADER
2172 bool "VPE loader support."
2173 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2174 select CPU_MIPSR2_IRQ_VI
2175 select CPU_MIPSR2_IRQ_EI
2178 Includes a loader for loading an elf relocatable object
2179 onto another VPE and running it.
2181 config MIPS_VPE_LOADER_CMP
2184 depends on MIPS_VPE_LOADER && MIPS_CMP
2186 config MIPS_VPE_LOADER_MT
2189 depends on MIPS_VPE_LOADER && !MIPS_CMP
2191 config MIPS_VPE_LOADER_TOM
2192 bool "Load VPE program into memory hidden from linux"
2193 depends on MIPS_VPE_LOADER
2196 The loader can use memory that is present but has been hidden from
2197 Linux using the kernel command line option "mem=xxMB". It's up to
2198 you to ensure the amount you put in the option and the space your
2199 program requires is less or equal to the amount physically present.
2201 config MIPS_VPE_APSP_API
2202 bool "Enable support for AP/SP API (RTLX)"
2203 depends on MIPS_VPE_LOADER
2206 config MIPS_VPE_APSP_API_CMP
2209 depends on MIPS_VPE_APSP_API && MIPS_CMP
2211 config MIPS_VPE_APSP_API_MT
2214 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2217 bool "MIPS CMP framework support (DEPRECATED)"
2218 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2222 select SYS_SUPPORTS_SMP
2223 select WEAK_ORDERING
2226 Select this if you are using a bootloader which implements the "CMP
2227 framework" protocol (ie. YAMON) and want your kernel to make use of
2228 its ability to start secondary CPUs.
2230 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2234 bool "MIPS Coherent Processing System support"
2235 depends on SYS_SUPPORTS_MIPS_CPS && !CPU_MIPSR6
2238 select MIPS_CPS_PM if HOTPLUG_CPU
2241 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2242 select SYS_SUPPORTS_HOTPLUG_CPU
2243 select SYS_SUPPORTS_SMP
2244 select WEAK_ORDERING
2246 Select this if you wish to run an SMP kernel across multiple cores
2247 within a MIPS Coherent Processing System. When this option is
2248 enabled the kernel will probe for other cores and boot them with
2249 no external assistance. It is safe to enable this when hardware
2250 support is unavailable.
2266 config SB1_PASS_2_WORKAROUNDS
2268 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2271 config SB1_PASS_2_1_WORKAROUNDS
2273 depends on CPU_SB1 && CPU_SB1_PASS_2
2277 config ARCH_PHYS_ADDR_T_64BIT
2281 prompt "SmartMIPS or microMIPS ASE support"
2283 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2286 Select this if you want neither microMIPS nor SmartMIPS support
2288 config CPU_HAS_SMARTMIPS
2289 depends on SYS_SUPPORTS_SMARTMIPS
2292 SmartMIPS is a extension of the MIPS32 architecture aimed at
2293 increased security at both hardware and software level for
2294 smartcards. Enabling this option will allow proper use of the
2295 SmartMIPS instructions by Linux applications. However a kernel with
2296 this option will not work on a MIPS core without SmartMIPS core. If
2297 you don't know you probably don't have SmartMIPS and should say N
2300 config CPU_MICROMIPS
2301 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2304 When this option is enabled the kernel will be built using the
2310 bool "Support for the MIPS SIMD Architecture"
2311 depends on CPU_SUPPORTS_MSA
2312 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2314 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2315 and a set of SIMD instructions to operate on them. When this option
2316 is enabled the kernel will support allocating & switching MSA
2317 vector register contexts. If you know that your kernel will only be
2318 running on CPUs which do not support MSA or that your userland will
2319 not be making use of it then you may wish to say N here to reduce
2320 the size & complexity of your kernel.
2331 # Vectored interrupt mode is an R2 feature
2333 config CPU_MIPSR2_IRQ_VI
2337 # Extended interrupt mode is an R2 feature
2339 config CPU_MIPSR2_IRQ_EI
2344 depends on !CPU_R3000
2350 config CPU_DADDI_WORKAROUNDS
2353 config CPU_R4000_WORKAROUNDS
2355 select CPU_R4400_WORKAROUNDS
2357 config CPU_R4400_WORKAROUNDS
2361 # - Highmem only makes sense for the 32-bit kernel.
2362 # - The current highmem code will only work properly on physically indexed
2363 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2364 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2365 # moment we protect the user and offer the highmem option only on machines
2366 # where it's known to be safe. This will not offer highmem on a few systems
2367 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2368 # indexed CPUs but we're playing safe.
2369 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2370 # know they might have memory configurations that could make use of highmem
2374 bool "High Memory Support"
2375 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2377 config CPU_SUPPORTS_HIGHMEM
2380 config SYS_SUPPORTS_HIGHMEM
2383 config SYS_SUPPORTS_SMARTMIPS
2386 config SYS_SUPPORTS_MICROMIPS
2389 config SYS_SUPPORTS_MIPS16
2392 This option must be set if a kernel might be executed on a MIPS16-
2393 enabled CPU even if MIPS16 is not actually being used. In other
2394 words, it makes the kernel MIPS16-tolerant.
2396 config CPU_SUPPORTS_MSA
2399 config ARCH_FLATMEM_ENABLE
2401 depends on !NUMA && !CPU_LOONGSON2
2403 config ARCH_DISCONTIGMEM_ENABLE
2405 default y if SGI_IP27
2407 Say Y to support efficient handling of discontiguous physical memory,
2408 for architectures which are either NUMA (Non-Uniform Memory Access)
2409 or have huge holes in the physical address space for other reasons.
2410 See <file:Documentation/vm/numa> for more.
2412 config ARCH_SPARSEMEM_ENABLE
2414 select SPARSEMEM_STATIC
2418 depends on SYS_SUPPORTS_NUMA
2420 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2421 Access). This option improves performance on systems with more
2422 than two nodes; on two node systems it is generally better to
2423 leave it disabled; on single node systems disable this option
2426 config SYS_SUPPORTS_NUMA
2432 depends on NEED_MULTIPLE_NODES
2434 config HW_PERF_EVENTS
2435 bool "Enable hardware performance counter support for perf events"
2436 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2439 Enable hardware performance counter support for perf events. If
2440 disabled, perf events will use software events only.
2445 bool "Multi-Processing support"
2446 depends on SYS_SUPPORTS_SMP
2448 This enables support for systems with more than one CPU. If you have
2449 a system with only one CPU, say N. If you have a system with more
2450 than one CPU, say Y.
2452 If you say N here, the kernel will run on uni- and multiprocessor
2453 machines, but will use only one CPU of a multiprocessor machine. If
2454 you say Y here, the kernel will run on many, but not all,
2455 uniprocessor machines. On a uniprocessor machine, the kernel
2456 will run faster if you say N here.
2458 People using multiprocessor machines who say Y here should also say
2459 Y to "Enhanced Real Time Clock Support", below.
2461 See also the SMP-HOWTO available at
2462 <http://www.tldp.org/docs.html#howto>.
2464 If you don't know what to do here, say N.
2469 config SYS_SUPPORTS_MIPS_CMP
2472 config SYS_SUPPORTS_MIPS_CPS
2475 config SYS_SUPPORTS_SMP
2478 config NR_CPUS_DEFAULT_4
2481 config NR_CPUS_DEFAULT_8
2484 config NR_CPUS_DEFAULT_16
2487 config NR_CPUS_DEFAULT_32
2490 config NR_CPUS_DEFAULT_64
2494 int "Maximum number of CPUs (2-256)"
2497 default "4" if NR_CPUS_DEFAULT_4
2498 default "8" if NR_CPUS_DEFAULT_8
2499 default "16" if NR_CPUS_DEFAULT_16
2500 default "32" if NR_CPUS_DEFAULT_32
2501 default "64" if NR_CPUS_DEFAULT_64
2503 This allows you to specify the maximum number of CPUs which this
2504 kernel will support. The maximum supported value is 32 for 32-bit
2505 kernel and 64 for 64-bit kernels; the minimum value which makes
2506 sense is 1 for Qemu (useful only for kernel debugging purposes)
2507 and 2 for all others.
2509 This is purely to save memory - each supported CPU adds
2510 approximately eight kilobytes to the kernel image. For best
2511 performance should round up your number of processors to the next
2514 config MIPS_PERF_SHARED_TC_COUNTERS
2518 # Timer Interrupt Frequency Configuration
2522 prompt "Timer frequency"
2525 Allows the configuration of the timer frequency.
2528 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2531 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2534 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2537 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2540 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2543 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2546 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2550 config SYS_SUPPORTS_48HZ
2553 config SYS_SUPPORTS_100HZ
2556 config SYS_SUPPORTS_128HZ
2559 config SYS_SUPPORTS_250HZ
2562 config SYS_SUPPORTS_256HZ
2565 config SYS_SUPPORTS_1000HZ
2568 config SYS_SUPPORTS_1024HZ
2571 config SYS_SUPPORTS_ARBIT_HZ
2573 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2574 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2575 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2576 !SYS_SUPPORTS_1024HZ
2581 default 100 if HZ_100
2582 default 128 if HZ_128
2583 default 250 if HZ_250
2584 default 256 if HZ_256
2585 default 1000 if HZ_1000
2586 default 1024 if HZ_1024
2589 def_bool HIGH_RES_TIMERS
2591 source "kernel/Kconfig.preempt"
2594 bool "Kexec system call"
2596 kexec is a system call that implements the ability to shutdown your
2597 current kernel, and to start another kernel. It is like a reboot
2598 but it is independent of the system firmware. And like a reboot
2599 you can start any kernel with it, not just Linux.
2601 The name comes from the similarity to the exec system call.
2603 It is an ongoing process to be certain the hardware in a machine
2604 is properly shutdown, so do not be surprised if this code does not
2605 initially work for you. As of this writing the exact hardware
2606 interface is strongly in flux, so no good recommendation can be
2610 bool "Kernel crash dumps"
2612 Generate crash dump after being started by kexec.
2613 This should be normally only set in special crash dump kernels
2614 which are loaded in the main kernel with kexec-tools into
2615 a specially reserved region and then later executed after
2616 a crash by kdump/kexec. The crash dump kernel must be compiled
2617 to a memory address not used by the main kernel or firmware using
2620 config PHYSICAL_START
2621 hex "Physical address where the kernel is loaded"
2622 default "0xffffffff84000000" if 64BIT
2623 default "0x84000000" if 32BIT
2624 depends on CRASH_DUMP
2626 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2627 If you plan to use kernel for capturing the crash dump change
2628 this value to start of the reserved region (the "X" value as
2629 specified in the "crashkernel=YM@XM" command line boot parameter
2630 passed to the panic-ed kernel).
2633 bool "Enable seccomp to safely compute untrusted bytecode"
2637 This kernel feature is useful for number crunching applications
2638 that may need to compute untrusted bytecode during their
2639 execution. By using pipes or other transports made available to
2640 the process as file descriptors supporting the read/write
2641 syscalls, it's possible to isolate those applications in
2642 their own address space using seccomp. Once seccomp is
2643 enabled via /proc/<pid>/seccomp, it cannot be disabled
2644 and the task is only allowed to execute a few safe syscalls
2645 defined by each seccomp mode.
2647 If unsure, say Y. Only embedded should say N here.
2649 config MIPS_O32_FP64_SUPPORT
2650 bool "Support for O32 binaries using 64-bit FP"
2651 depends on 32BIT || MIPS32_O32
2653 When this is enabled, the kernel will support use of 64-bit floating
2654 point registers with binaries using the O32 ABI along with the
2655 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2656 32-bit MIPS systems this support is at the cost of increasing the
2657 size and complexity of the compiled FPU emulator. Thus if you are
2658 running a MIPS32 system and know that none of your userland binaries
2659 will require 64-bit floating point, you may wish to reduce the size
2660 of your kernel & potentially improve FP emulation performance by
2663 Although binutils currently supports use of this flag the details
2664 concerning its effect upon the O32 ABI in userland are still being
2665 worked on. In order to avoid userland becoming dependant upon current
2666 behaviour before the details have been finalised, this option should
2667 be considered experimental and only enabled by those working upon
2675 select OF_EARLY_FLATTREE
2682 prompt "Kernel appended dtb support" if OF
2683 default MIPS_NO_APPENDED_DTB
2685 config MIPS_NO_APPENDED_DTB
2688 Do not enable appended dtb support.
2690 config MIPS_RAW_APPENDED_DTB
2693 With this option, the boot code will look for a device tree binary
2694 DTB) appended to raw vmlinux.bin (without decompressor).
2695 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2697 This is meant as a backward compatibility convenience for those
2698 systems with a bootloader that can't be upgraded to accommodate
2699 the documented boot protocol using a device tree.
2701 Beware that there is very little in terms of protection against
2702 this option being confused by leftover garbage in memory that might
2703 look like a DTB header after a reboot if no actual DTB is appended
2704 to vmlinux.bin. Do not leave this option active in a production kernel
2705 if you don't intend to always append a DTB.
2707 config MIPS_ZBOOT_APPENDED_DTB
2709 depends on SYS_SUPPORTS_ZBOOT
2711 With this option, the boot code will look for a device tree binary
2712 DTB) appended to raw vmlinuz.bin (with decompressor).
2713 (e.g. cat vmlinuz.bin <filename>.dtb > vmlinuz_w_dtb).
2715 This is meant as a backward compatibility convenience for those
2716 systems with a bootloader that can't be upgraded to accommodate
2717 the documented boot protocol using a device tree.
2719 Beware that there is very little in terms of protection against
2720 this option being confused by leftover garbage in memory that might
2721 look like a DTB header after a reboot if no actual DTB is appended
2722 to vmlinuz.bin. Do not leave this option active in a production kernel
2723 if you don't intend to always append a DTB.
2728 config LOCKDEP_SUPPORT
2732 config STACKTRACE_SUPPORT
2736 config PGTABLE_LEVELS
2738 default 3 if 64BIT && !PAGE_SIZE_64KB
2741 source "init/Kconfig"
2743 source "kernel/Kconfig.freezer"
2745 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2753 bool "Support for PCI controller"
2754 depends on HW_HAS_PCI
2756 select NO_GENERIC_PCI_IOPORT_MAP
2758 Find out whether you have a PCI motherboard. PCI is the name of a
2759 bus system, i.e. the way the CPU talks to the other stuff inside
2760 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2764 bool "Support for HT-linked PCI"
2766 depends on CPU_LOONGSON3
2770 Loongson family machines use Hyper-Transport bus for inter-core
2771 connection and device connection. The PCI bus is a subordinate
2772 linked at HT. Choose Y for Loongson-3 based machines.
2777 source "drivers/pci/Kconfig"
2779 source "drivers/pci/pcie/Kconfig"
2782 # ISA support is now enabled via select. Too many systems still have the one
2783 # or other ISA chip on the board that users don't know about so don't expect
2784 # users to choose the right thing ...
2791 depends on HW_HAS_EISA
2793 select GENERIC_ISA_DMA
2795 The Extended Industry Standard Architecture (EISA) bus was
2796 developed as an open alternative to the IBM MicroChannel bus.
2798 The EISA bus provided some of the features of the IBM MicroChannel
2799 bus while maintaining backward compatibility with cards made for
2800 the older ISA bus. The EISA bus saw limited use between 1988 and
2801 1995 when it was made obsolete by the PCI bus.
2803 Say Y here if you are building a kernel for an EISA-based machine.
2807 source "drivers/eisa/Kconfig"
2810 bool "TURBOchannel support"
2811 depends on MACH_DECSTATION
2813 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2814 processors. TURBOchannel programming specifications are available
2816 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2818 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2819 Linux driver support status is documented at:
2820 <http://www.linux-mips.org/wiki/DECstation>
2830 select MIPS_EXTERNAL_TIMER
2838 source "drivers/pcmcia/Kconfig"
2840 source "drivers/pci/hotplug/Kconfig"
2843 tristate "RapidIO support"
2847 If you say Y here, the kernel will include drivers and
2848 infrastructure code to support RapidIO interconnect devices.
2850 source "drivers/rapidio/Kconfig"
2854 menu "Executable file formats"
2856 source "fs/Kconfig.binfmt"
2861 config MIPS32_COMPAT
2867 config SYSVIPC_COMPAT
2871 bool "Kernel support for o32 binaries"
2873 select ARCH_WANT_OLD_COMPAT_IPC
2875 select MIPS32_COMPAT
2876 select SYSVIPC_COMPAT if SYSVIPC
2878 Select this option if you want to run o32 binaries. These are pure
2879 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2880 existing binaries are in this format.
2885 bool "Kernel support for n32 binaries"
2888 select MIPS32_COMPAT
2889 select SYSVIPC_COMPAT if SYSVIPC
2891 Select this option if you want to run n32 binaries. These are
2892 64-bit binaries using 32-bit quantities for addressing and certain
2893 data that would normally be 64-bit. They are used in special
2900 default y if MIPS32_O32 || MIPS32_N32
2904 menu "Power management options"
2906 config ARCH_HIBERNATION_POSSIBLE
2908 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2910 config ARCH_SUSPEND_POSSIBLE
2912 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2914 source "kernel/power/Kconfig"
2918 config MIPS_EXTERNAL_TIMER
2921 menu "CPU Power Management"
2923 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2924 source "drivers/cpufreq/Kconfig"
2927 source "drivers/cpuidle/Kconfig"
2931 source "net/Kconfig"
2933 source "drivers/Kconfig"
2935 source "drivers/firmware/Kconfig"
2939 source "arch/mips/Kconfig.debug"
2941 source "security/Kconfig"
2943 source "crypto/Kconfig"
2945 source "lib/Kconfig"
2947 source "arch/mips/kvm/Kconfig"