4 select ARCH_SUPPORTS_UPROBES
5 select ARCH_MIGHT_HAVE_PC_PARPORT
6 select ARCH_MIGHT_HAVE_PC_SERIO
7 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
8 select ARCH_USE_BUILTIN_BSWAP
9 select HAVE_CONTEXT_TRACKING
10 select HAVE_GENERIC_DMA_COHERENT
13 select HAVE_PERF_EVENTS
14 select PERF_USE_VMALLOC
16 select HAVE_ARCH_SECCOMP_FILTER
17 select HAVE_ARCH_TRACEHOOK
18 select HAVE_BPF_JIT if !CPU_MICROMIPS
19 select HAVE_FUNCTION_TRACER
20 select HAVE_DYNAMIC_FTRACE
21 select HAVE_FTRACE_MCOUNT_RECORD
22 select HAVE_C_RECORDMCOUNT
23 select HAVE_FUNCTION_GRAPH_TRACER
25 select HAVE_KRETPROBES
26 select HAVE_SYSCALL_TRACEPOINTS
27 select HAVE_DEBUG_KMEMLEAK
28 select HAVE_SYSCALL_TRACEPOINTS
29 select ARCH_HAS_ELF_RANDOMIZE
30 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
31 select RTC_LIB if !MACH_LOONGSON64
32 select GENERIC_ATOMIC64 if !64BIT
33 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
35 select HAVE_DMA_CONTIGUOUS
36 select HAVE_DMA_API_DEBUG
37 select GENERIC_IRQ_PROBE
38 select GENERIC_IRQ_SHOW
39 select GENERIC_PCI_IOMAP
40 select HAVE_ARCH_JUMP_LABEL
41 select ARCH_WANT_IPC_PARSE_VERSION
42 select IRQ_FORCED_THREADING
44 select HAVE_MEMBLOCK_NODE_MAP
45 select ARCH_DISCARD_MEMBLOCK
46 select GENERIC_SMP_IDLE_THREAD
47 select BUILDTIME_EXTABLE_SORT
48 select GENERIC_CLOCKEVENTS
49 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
50 select GENERIC_CMOS_UPDATE
51 select HAVE_MOD_ARCH_SPECIFIC
53 select MODULES_USE_ELF_REL if MODULES
54 select MODULES_USE_ELF_RELA if MODULES && 64BIT
55 select CLONE_BACKWARDS
56 select HAVE_DEBUG_STACKOVERFLOW
57 select HAVE_CC_STACKPROTECTOR
58 select CPU_PM if CPU_IDLE
59 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
60 select ARCH_BINFMT_ELF_STATE
61 select SYSCTL_EXCEPTION_TRACE
62 select HAVE_VIRT_CPU_ACCOUNTING_GEN
63 select HAVE_IRQ_TIME_ACCOUNTING
65 menu "Machine selection"
72 bool "Alchemy processor based machines"
73 select ARCH_PHYS_ADDR_T_64BIT
77 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
78 select SYS_HAS_CPU_MIPS32_R1
79 select SYS_SUPPORTS_32BIT_KERNEL
80 select SYS_SUPPORTS_APM_EMULATION
81 select ARCH_REQUIRE_GPIOLIB
82 select SYS_SUPPORTS_ZBOOT
86 bool "Texas Instruments AR7"
88 select DMA_NONCOHERENT
94 select SYS_HAS_CPU_MIPS32_R1
95 select SYS_HAS_EARLY_PRINTK
96 select SYS_SUPPORTS_32BIT_KERNEL
97 select SYS_SUPPORTS_LITTLE_ENDIAN
98 select SYS_SUPPORTS_MIPS16
99 select SYS_SUPPORTS_ZBOOT_UART16550
100 select ARCH_REQUIRE_GPIOLIB
104 Support for the Texas Instruments AR7 System-on-a-Chip
105 family: TNETD7100, 7200 and 7300.
108 bool "Atheros AR231x/AR531x SoC support"
111 select DMA_NONCOHERENT
114 select SYS_HAS_CPU_MIPS32_R1
115 select SYS_SUPPORTS_BIG_ENDIAN
116 select SYS_SUPPORTS_32BIT_KERNEL
117 select SYS_HAS_EARLY_PRINTK
119 Support for Atheros AR231x and Atheros AR531x based boards
122 bool "Atheros AR71XX/AR724X/AR913X based boards"
123 select ARCH_HAS_RESET_CONTROLLER
124 select ARCH_REQUIRE_GPIOLIB
128 select DMA_NONCOHERENT
134 select SYS_HAS_CPU_MIPS32_R2
135 select SYS_HAS_EARLY_PRINTK
136 select SYS_SUPPORTS_32BIT_KERNEL
137 select SYS_SUPPORTS_BIG_ENDIAN
138 select SYS_SUPPORTS_MIPS16
139 select SYS_SUPPORTS_ZBOOT
142 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
145 bool "Broadcom Generic BMIPS kernel"
147 select NO_EXCEPT_FILL
153 select BCM7038_L1_IRQ
154 select BCM7120_L2_IRQ
155 select BRCMSTB_L2_IRQ
157 select DMA_NONCOHERENT
158 select SYS_SUPPORTS_32BIT_KERNEL
159 select SYS_SUPPORTS_LITTLE_ENDIAN
160 select SYS_SUPPORTS_BIG_ENDIAN
161 select SYS_SUPPORTS_HIGHMEM
162 select SYS_HAS_CPU_BMIPS32_3300
163 select SYS_HAS_CPU_BMIPS4350
164 select SYS_HAS_CPU_BMIPS4380
165 select SYS_HAS_CPU_BMIPS5000
167 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
168 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
169 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
170 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
172 Build a generic DT-based kernel image that boots on select
173 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
174 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
175 must be set appropriately for your board.
178 bool "Broadcom BCM47XX based boards"
179 select ARCH_WANT_OPTIONAL_GPIOLIB
183 select DMA_NONCOHERENT
186 select SYS_HAS_CPU_MIPS32_R1
187 select NO_EXCEPT_FILL
188 select SYS_SUPPORTS_32BIT_KERNEL
189 select SYS_SUPPORTS_LITTLE_ENDIAN
190 select SYS_SUPPORTS_MIPS16
191 select SYS_HAS_EARLY_PRINTK
192 select USE_GENERIC_EARLY_PRINTK_8250
194 select LEDS_GPIO_REGISTER
197 Support for BCM47XX based boards
200 bool "Broadcom BCM63XX based boards"
205 select DMA_NONCOHERENT
207 select SYS_SUPPORTS_32BIT_KERNEL
208 select SYS_SUPPORTS_BIG_ENDIAN
209 select SYS_HAS_EARLY_PRINTK
211 select ARCH_REQUIRE_GPIOLIB
213 select MIPS_L1_CACHE_SHIFT_4
215 Support for BCM63XX based boards
222 select DMA_NONCOHERENT
228 select PCI_GT64XXX_PCI0
230 select SYS_HAS_CPU_NEVADA
231 select SYS_HAS_EARLY_PRINTK
232 select SYS_SUPPORTS_32BIT_KERNEL
233 select SYS_SUPPORTS_64BIT_KERNEL
234 select SYS_SUPPORTS_LITTLE_ENDIAN
235 select USE_GENERIC_EARLY_PRINTK_8250
237 config MACH_DECSTATION
241 select CEVT_R4K if CPU_R4X00
243 select CSRC_R4K if CPU_R4X00
244 select CPU_DADDI_WORKAROUNDS if 64BIT
245 select CPU_R4000_WORKAROUNDS if 64BIT
246 select CPU_R4400_WORKAROUNDS if 64BIT
247 select DMA_NONCOHERENT
250 select SYS_HAS_CPU_R3000
251 select SYS_HAS_CPU_R4X00
252 select SYS_SUPPORTS_32BIT_KERNEL
253 select SYS_SUPPORTS_64BIT_KERNEL
254 select SYS_SUPPORTS_LITTLE_ENDIAN
255 select SYS_SUPPORTS_128HZ
256 select SYS_SUPPORTS_256HZ
257 select SYS_SUPPORTS_1024HZ
258 select MIPS_L1_CACHE_SHIFT_4
260 This enables support for DEC's MIPS based workstations. For details
261 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
262 DECstation porting pages on <http://decstation.unix-ag.org/>.
264 If you have one of the following DECstation Models you definitely
265 want to choose R4xx0 for the CPU Type:
272 otherwise choose R3000.
275 bool "Jazz family of machines"
278 select ARCH_MAY_HAVE_PC_FDC
281 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
282 select GENERIC_ISA_DMA
283 select HAVE_PCSPKR_PLATFORM
288 select SYS_HAS_CPU_R4X00
289 select SYS_SUPPORTS_32BIT_KERNEL
290 select SYS_SUPPORTS_64BIT_KERNEL
291 select SYS_SUPPORTS_100HZ
293 This a family of machines based on the MIPS R4030 chipset which was
294 used by several vendors to build RISC/os and Windows NT workstations.
295 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
296 Olivetti M700-10 workstations.
299 bool "Ingenic SoC based machines"
300 select SYS_SUPPORTS_32BIT_KERNEL
301 select SYS_SUPPORTS_LITTLE_ENDIAN
302 select SYS_SUPPORTS_ZBOOT_UART16550
303 select DMA_NONCOHERENT
305 select ARCH_REQUIRE_GPIOLIB
307 select GENERIC_IRQ_CHIP
313 bool "Lantiq based platforms"
314 select DMA_NONCOHERENT
318 select SYS_HAS_CPU_MIPS32_R1
319 select SYS_HAS_CPU_MIPS32_R2
320 select SYS_SUPPORTS_BIG_ENDIAN
321 select SYS_SUPPORTS_32BIT_KERNEL
322 select SYS_SUPPORTS_MIPS16
323 select SYS_SUPPORTS_MULTITHREADING
324 select SYS_HAS_EARLY_PRINTK
325 select ARCH_REQUIRE_GPIOLIB
328 select HAVE_MACH_CLKDEV
332 select PINCTRL_LANTIQ
333 select ARCH_HAS_RESET_CONTROLLER
334 select RESET_CONTROLLER
337 bool "LASAT Networks platforms"
341 select DMA_NONCOHERENT
342 select SYS_HAS_EARLY_PRINTK
345 select PCI_GT64XXX_PCI0
347 select R5000_CPU_SCACHE
348 select SYS_HAS_CPU_R5000
349 select SYS_SUPPORTS_32BIT_KERNEL
350 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
351 select SYS_SUPPORTS_LITTLE_ENDIAN
353 config MACH_LOONGSON32
354 bool "Loongson-1 family of machines"
355 select SYS_SUPPORTS_ZBOOT
357 This enables support for the Loongson-1 family of machines.
359 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
360 the Institute of Computing Technology (ICT), Chinese Academy of
363 config MACH_LOONGSON64
364 bool "Loongson-2/3 family of machines"
365 select SYS_SUPPORTS_ZBOOT
367 This enables the support of Loongson-2/3 family of machines.
369 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
370 family of multi-core CPUs. They are both 64-bit general-purpose
371 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
372 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
373 in the People's Republic of China. The chief architect is Professor
376 config MACH_PISTACHIO
377 bool "IMG Pistachio SoC based boards"
378 select ARCH_REQUIRE_GPIOLIB
382 select CLKSRC_MIPS_GIC
385 select DMA_MAYBE_COHERENT
389 select MIPS_CPU_SCACHE
393 select SYS_HAS_CPU_MIPS32_R2
394 select SYS_SUPPORTS_32BIT_KERNEL
395 select SYS_SUPPORTS_LITTLE_ENDIAN
396 select SYS_SUPPORTS_MIPS_CPS
397 select SYS_SUPPORTS_MULTITHREADING
398 select SYS_SUPPORTS_ZBOOT
399 select SYS_HAS_EARLY_PRINTK
400 select USE_GENERIC_EARLY_PRINTK_8250
403 This enables support for the IMG Pistachio SoC platform.
406 bool "MIPS Malta board"
407 select ARCH_MAY_HAVE_PC_FDC
413 select CLKSRC_MIPS_GIC
415 select DMA_MAYBE_COHERENT
416 select GENERIC_ISA_DMA
417 select HAVE_PCSPKR_PLATFORM
424 select MIPS_CPU_SCACHE
425 select MIPS_L1_CACHE_SHIFT_6
426 select PCI_GT64XXX_PCI0
429 select SYS_HAS_CPU_MIPS32_R1
430 select SYS_HAS_CPU_MIPS32_R2
431 select SYS_HAS_CPU_MIPS32_R3_5
432 select SYS_HAS_CPU_MIPS32_R5
433 select SYS_HAS_CPU_MIPS32_R6
434 select SYS_HAS_CPU_MIPS64_R1
435 select SYS_HAS_CPU_MIPS64_R2
436 select SYS_HAS_CPU_MIPS64_R6
437 select SYS_HAS_CPU_NEVADA
438 select SYS_HAS_CPU_RM7000
439 select SYS_SUPPORTS_32BIT_KERNEL
440 select SYS_SUPPORTS_64BIT_KERNEL
441 select SYS_SUPPORTS_BIG_ENDIAN
442 select SYS_SUPPORTS_HIGHMEM
443 select SYS_SUPPORTS_LITTLE_ENDIAN
444 select SYS_SUPPORTS_MICROMIPS
445 select SYS_SUPPORTS_MIPS_CMP
446 select SYS_SUPPORTS_MIPS_CPS
447 select SYS_SUPPORTS_MIPS16
448 select SYS_SUPPORTS_MULTITHREADING
449 select SYS_SUPPORTS_SMARTMIPS
450 select SYS_SUPPORTS_ZBOOT
452 select ZONE_DMA32 if 64BIT
456 This enables support for the MIPS Technologies Malta evaluation
460 bool "MIPS SEAD3 board"
466 select CLKSRC_MIPS_GIC
468 select CPU_MIPSR2_IRQ_VI
469 select CPU_MIPSR2_IRQ_EI
470 select DMA_NONCOHERENT
475 select SYS_HAS_CPU_MIPS32_R1
476 select SYS_HAS_CPU_MIPS32_R2
477 select SYS_HAS_CPU_MIPS64_R1
478 select SYS_HAS_EARLY_PRINTK
479 select SYS_SUPPORTS_32BIT_KERNEL
480 select SYS_SUPPORTS_64BIT_KERNEL
481 select SYS_SUPPORTS_BIG_ENDIAN
482 select SYS_SUPPORTS_LITTLE_ENDIAN
483 select SYS_SUPPORTS_SMARTMIPS
484 select SYS_SUPPORTS_MICROMIPS
485 select SYS_SUPPORTS_MIPS16
486 select USB_EHCI_BIG_ENDIAN_DESC
487 select USB_EHCI_BIG_ENDIAN_MMIO
490 This enables support for the MIPS Technologies SEAD3 evaluation
494 bool "NEC EMMA2RH Mark-eins board"
498 This enables support for the NEC Electronics Mark-eins boards.
501 bool "NEC VR4100 series based machines"
504 select SYS_HAS_CPU_VR41XX
505 select SYS_SUPPORTS_MIPS16
506 select ARCH_REQUIRE_GPIOLIB
509 bool "NXP STB220 board"
512 Support for NXP Semiconductors STB220 Development Board.
519 Support for NXP Semiconductors STB225 Development Board.
522 bool "PMC-Sierra MSP chipsets"
525 select DMA_NONCOHERENT
527 select NO_EXCEPT_FILL
529 select SYS_HAS_CPU_MIPS32_R1
530 select SYS_HAS_CPU_MIPS32_R2
531 select SYS_SUPPORTS_32BIT_KERNEL
532 select SYS_SUPPORTS_BIG_ENDIAN
533 select SYS_SUPPORTS_MIPS16
536 select SERIAL_8250_CONSOLE
537 select USB_EHCI_BIG_ENDIAN_MMIO
538 select USB_EHCI_BIG_ENDIAN_DESC
540 This adds support for the PMC-Sierra family of Multi-Service
541 Processor System-On-A-Chips. These parts include a number
542 of integrated peripherals, interfaces and DSPs in addition to
543 a variety of MIPS cores.
546 bool "Ralink based machines"
550 select DMA_NONCOHERENT
553 select SYS_HAS_CPU_MIPS32_R1
554 select SYS_HAS_CPU_MIPS32_R2
555 select SYS_SUPPORTS_32BIT_KERNEL
556 select SYS_SUPPORTS_LITTLE_ENDIAN
557 select SYS_SUPPORTS_MIPS16
558 select SYS_HAS_EARLY_PRINTK
559 select HAVE_MACH_CLKDEV
561 select ARCH_HAS_RESET_CONTROLLER
562 select RESET_CONTROLLER
565 bool "SGI IP22 (Indy/Indigo2)"
571 select DEFAULT_SGI_PARTITION
572 select DMA_NONCOHERENT
576 select IP22_CPU_SCACHE
578 select GENERIC_ISA_DMA_SUPPORT_BROKEN
580 select SGI_HAS_INDYDOG
586 select SYS_HAS_CPU_R4X00
587 select SYS_HAS_CPU_R5000
589 # Disable EARLY_PRINTK for now since it leads to overwritten prom
590 # memory during early boot on some machines.
592 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
593 # for a more details discussion
595 # select SYS_HAS_EARLY_PRINTK
596 select SYS_SUPPORTS_32BIT_KERNEL
597 select SYS_SUPPORTS_64BIT_KERNEL
598 select SYS_SUPPORTS_BIG_ENDIAN
599 select MIPS_L1_CACHE_SHIFT_7
601 This are the SGI Indy, Challenge S and Indigo2, as well as certain
602 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
603 that runs on these, say Y here.
606 bool "SGI IP27 (Origin200/2000)"
610 select DEFAULT_SGI_PARTITION
612 select SYS_HAS_EARLY_PRINTK
614 select NR_CPUS_DEFAULT_64
615 select SYS_HAS_CPU_R10000
616 select SYS_SUPPORTS_64BIT_KERNEL
617 select SYS_SUPPORTS_BIG_ENDIAN
618 select SYS_SUPPORTS_NUMA
619 select SYS_SUPPORTS_SMP
620 select MIPS_L1_CACHE_SHIFT_7
622 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
623 workstations. To compile a Linux kernel that runs on these, say Y
627 bool "SGI IP28 (Indigo2 R10k)"
633 select DEFAULT_SGI_PARTITION
634 select DMA_NONCOHERENT
635 select GENERIC_ISA_DMA_SUPPORT_BROKEN
641 select SGI_HAS_INDYDOG
647 select SYS_HAS_CPU_R10000
649 # Disable EARLY_PRINTK for now since it leads to overwritten prom
650 # memory during early boot on some machines.
652 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
653 # for a more details discussion
655 # select SYS_HAS_EARLY_PRINTK
656 select SYS_SUPPORTS_64BIT_KERNEL
657 select SYS_SUPPORTS_BIG_ENDIAN
658 select MIPS_L1_CACHE_SHIFT_7
660 This is the SGI Indigo2 with R10000 processor. To compile a Linux
661 kernel that runs on these, say Y here.
670 select DMA_NONCOHERENT
673 select R5000_CPU_SCACHE
674 select RM7000_CPU_SCACHE
675 select SYS_HAS_CPU_R5000
676 select SYS_HAS_CPU_R10000 if BROKEN
677 select SYS_HAS_CPU_RM7000
678 select SYS_HAS_CPU_NEVADA
679 select SYS_SUPPORTS_64BIT_KERNEL
680 select SYS_SUPPORTS_BIG_ENDIAN
682 If you want this kernel to run on SGI O2 workstation, say Y here.
685 bool "Sibyte BCM91120C-CRhine"
688 select SIBYTE_BCM1120
690 select SYS_HAS_CPU_SB1
691 select SYS_SUPPORTS_BIG_ENDIAN
692 select SYS_SUPPORTS_LITTLE_ENDIAN
695 bool "Sibyte BCM91120x-Carmel"
698 select SIBYTE_BCM1120
700 select SYS_HAS_CPU_SB1
701 select SYS_SUPPORTS_BIG_ENDIAN
702 select SYS_SUPPORTS_LITTLE_ENDIAN
705 bool "Sibyte BCM91125C-CRhone"
708 select SIBYTE_BCM1125
710 select SYS_HAS_CPU_SB1
711 select SYS_SUPPORTS_BIG_ENDIAN
712 select SYS_SUPPORTS_HIGHMEM
713 select SYS_SUPPORTS_LITTLE_ENDIAN
716 bool "Sibyte BCM91125E-Rhone"
719 select SIBYTE_BCM1125H
721 select SYS_HAS_CPU_SB1
722 select SYS_SUPPORTS_BIG_ENDIAN
723 select SYS_SUPPORTS_LITTLE_ENDIAN
726 bool "Sibyte BCM91250A-SWARM"
729 select HAVE_PATA_PLATFORM
732 select SYS_HAS_CPU_SB1
733 select SYS_SUPPORTS_BIG_ENDIAN
734 select SYS_SUPPORTS_HIGHMEM
735 select SYS_SUPPORTS_LITTLE_ENDIAN
736 select ZONE_DMA32 if 64BIT
738 config SIBYTE_LITTLESUR
739 bool "Sibyte BCM91250C2-LittleSur"
742 select HAVE_PATA_PLATFORM
745 select SYS_HAS_CPU_SB1
746 select SYS_SUPPORTS_BIG_ENDIAN
747 select SYS_SUPPORTS_HIGHMEM
748 select SYS_SUPPORTS_LITTLE_ENDIAN
750 config SIBYTE_SENTOSA
751 bool "Sibyte BCM91250E-Sentosa"
756 select SYS_HAS_CPU_SB1
757 select SYS_SUPPORTS_BIG_ENDIAN
758 select SYS_SUPPORTS_LITTLE_ENDIAN
761 bool "Sibyte BCM91480B-BigSur"
764 select NR_CPUS_DEFAULT_4
765 select SIBYTE_BCM1x80
767 select SYS_HAS_CPU_SB1
768 select SYS_SUPPORTS_BIG_ENDIAN
769 select SYS_SUPPORTS_HIGHMEM
770 select SYS_SUPPORTS_LITTLE_ENDIAN
771 select ZONE_DMA32 if 64BIT
774 bool "SNI RM200/300/400"
775 select FW_ARC if CPU_LITTLE_ENDIAN
776 select FW_ARC32 if CPU_LITTLE_ENDIAN
777 select FW_SNIPROM if CPU_BIG_ENDIAN
778 select ARCH_MAY_HAVE_PC_FDC
782 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
783 select DMA_NONCOHERENT
784 select GENERIC_ISA_DMA
785 select HAVE_PCSPKR_PLATFORM
792 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
793 select SYS_HAS_CPU_R4X00
794 select SYS_HAS_CPU_R5000
795 select SYS_HAS_CPU_R10000
796 select R5000_CPU_SCACHE
797 select SYS_HAS_EARLY_PRINTK
798 select SYS_SUPPORTS_32BIT_KERNEL
799 select SYS_SUPPORTS_64BIT_KERNEL
800 select SYS_SUPPORTS_BIG_ENDIAN
801 select SYS_SUPPORTS_HIGHMEM
802 select SYS_SUPPORTS_LITTLE_ENDIAN
804 The SNI RM200/300/400 are MIPS-based machines manufactured by
805 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
806 Technology and now in turn merged with Fujitsu. Say Y here to
807 support this machine type.
810 bool "Toshiba TX39 series based machines"
813 bool "Toshiba TX49 series based machines"
815 config MIKROTIK_RB532
816 bool "Mikrotik RB532 boards"
819 select DMA_NONCOHERENT
822 select SYS_HAS_CPU_MIPS32_R1
823 select SYS_SUPPORTS_32BIT_KERNEL
824 select SYS_SUPPORTS_LITTLE_ENDIAN
827 select ARCH_REQUIRE_GPIOLIB
828 select MIPS_L1_CACHE_SHIFT_4
830 Support the Mikrotik(tm) RouterBoard 532 series,
831 based on the IDT RC32434 SoC.
833 config CAVIUM_OCTEON_SOC
834 bool "Cavium Networks Octeon SoC based boards"
836 select ARCH_PHYS_ADDR_T_64BIT
838 select SYS_SUPPORTS_64BIT_KERNEL
839 select SYS_SUPPORTS_BIG_ENDIAN
841 select EDAC_ATOMIC_SCRUB
842 select SYS_SUPPORTS_LITTLE_ENDIAN
843 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
844 select SYS_HAS_EARLY_PRINTK
845 select SYS_HAS_CPU_CAVIUM_OCTEON
850 select ARCH_REQUIRE_GPIOLIB
853 select ARCH_SPARSEMEM_ENABLE
854 select SYS_SUPPORTS_SMP
855 select NR_CPUS_DEFAULT_16
857 select MTD_COMPLEX_MAPPINGS
859 This option supports all of the Octeon reference boards from Cavium
860 Networks. It builds a kernel that dynamically determines the Octeon
861 CPU type and supports all known board reference implementations.
862 Some of the supported boards are:
869 Say Y here for most Octeon reference boards.
872 bool "Netlogic XLR/XLS based systems"
875 select SYS_HAS_CPU_XLR
876 select SYS_SUPPORTS_SMP
879 select SYS_SUPPORTS_32BIT_KERNEL
880 select SYS_SUPPORTS_64BIT_KERNEL
881 select ARCH_PHYS_ADDR_T_64BIT
882 select SYS_SUPPORTS_BIG_ENDIAN
883 select SYS_SUPPORTS_HIGHMEM
885 select NR_CPUS_DEFAULT_32
889 select ZONE_DMA32 if 64BIT
891 select SYS_HAS_EARLY_PRINTK
892 select SYS_SUPPORTS_ZBOOT
893 select SYS_SUPPORTS_ZBOOT_UART16550
895 Support for systems based on Netlogic XLR and XLS processors.
896 Say Y here if you have a XLR or XLS based board.
899 bool "Netlogic XLP based systems"
902 select SYS_HAS_CPU_XLP
903 select SYS_SUPPORTS_SMP
905 select SYS_SUPPORTS_32BIT_KERNEL
906 select SYS_SUPPORTS_64BIT_KERNEL
907 select ARCH_PHYS_ADDR_T_64BIT
908 select ARCH_REQUIRE_GPIOLIB
909 select SYS_SUPPORTS_BIG_ENDIAN
910 select SYS_SUPPORTS_LITTLE_ENDIAN
911 select SYS_SUPPORTS_HIGHMEM
913 select NR_CPUS_DEFAULT_32
917 select ZONE_DMA32 if 64BIT
919 select SYS_HAS_EARLY_PRINTK
921 select SYS_SUPPORTS_ZBOOT
922 select SYS_SUPPORTS_ZBOOT_UART16550
924 This board is based on Netlogic XLP Processor.
925 Say Y here if you have a XLP based board.
928 bool "Para-Virtualized guest system"
932 select SYS_SUPPORTS_64BIT_KERNEL
933 select SYS_SUPPORTS_32BIT_KERNEL
934 select SYS_SUPPORTS_BIG_ENDIAN
935 select SYS_SUPPORTS_SMP
936 select NR_CPUS_DEFAULT_4
937 select SYS_HAS_EARLY_PRINTK
938 select SYS_HAS_CPU_MIPS32_R2
939 select SYS_HAS_CPU_MIPS64_R2
940 select SYS_HAS_CPU_CAVIUM_OCTEON
944 This option supports guest running under ????
948 source "arch/mips/alchemy/Kconfig"
949 source "arch/mips/ath25/Kconfig"
950 source "arch/mips/ath79/Kconfig"
951 source "arch/mips/bcm47xx/Kconfig"
952 source "arch/mips/bcm63xx/Kconfig"
953 source "arch/mips/bmips/Kconfig"
954 source "arch/mips/jazz/Kconfig"
955 source "arch/mips/jz4740/Kconfig"
956 source "arch/mips/lantiq/Kconfig"
957 source "arch/mips/lasat/Kconfig"
958 source "arch/mips/pistachio/Kconfig"
959 source "arch/mips/pmcs-msp71xx/Kconfig"
960 source "arch/mips/ralink/Kconfig"
961 source "arch/mips/sgi-ip27/Kconfig"
962 source "arch/mips/sibyte/Kconfig"
963 source "arch/mips/txx9/Kconfig"
964 source "arch/mips/vr41xx/Kconfig"
965 source "arch/mips/cavium-octeon/Kconfig"
966 source "arch/mips/loongson32/Kconfig"
967 source "arch/mips/loongson64/Kconfig"
968 source "arch/mips/netlogic/Kconfig"
969 source "arch/mips/paravirt/Kconfig"
973 config RWSEM_GENERIC_SPINLOCK
977 config RWSEM_XCHGADD_ALGORITHM
980 config ARCH_HAS_ILOG2_U32
984 config ARCH_HAS_ILOG2_U64
988 config GENERIC_HWEIGHT
992 config GENERIC_CALIBRATE_DELAY
996 config SCHED_OMIT_FRAME_POINTER
1001 # Select some configuration options automatically based on user selections.
1006 config ARCH_MAY_HAVE_PC_FDC
1043 select ARCH_REQUIRE_GPIOLIB
1049 config ARCH_DMA_ADDR_T_64BIT
1050 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1052 config ARCH_SUPPORTS_UPROBES
1055 config DMA_MAYBE_COHERENT
1056 select DMA_NONCOHERENT
1062 config DMA_NONCOHERENT
1064 select NEED_DMA_MAP_STATE
1066 config NEED_DMA_MAP_STATE
1069 config SYS_HAS_EARLY_PRINTK
1073 bool "Support for hot-pluggable CPUs"
1074 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
1076 Say Y here to allow turning CPUs off and on. CPUs can be
1077 controlled through /sys/devices/system/cpu.
1078 (Note: power management support will enable this option
1079 automatically on SMP systems. )
1080 Say N if you want to disable CPU hotplug.
1082 config SYS_SUPPORTS_HOTPLUG_CPU
1085 config MIPS_BONITO64
1100 config NO_IOPORT_MAP
1106 config GENERIC_ISA_DMA
1108 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1111 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1113 select GENERIC_ISA_DMA
1118 config HOLES_IN_ZONE
1122 # Endianness selection. Sufficiently obscure so many users don't know what to
1123 # answer,so we try hard to limit the available choices. Also the use of a
1124 # choice statement should be more obvious to the user.
1127 prompt "Endianness selection"
1129 Some MIPS machines can be configured for either little or big endian
1130 byte order. These modes require different kernels and a different
1131 Linux distribution. In general there is one preferred byteorder for a
1132 particular system but some systems are just as commonly used in the
1133 one or the other endianness.
1135 config CPU_BIG_ENDIAN
1137 depends on SYS_SUPPORTS_BIG_ENDIAN
1139 config CPU_LITTLE_ENDIAN
1140 bool "Little endian"
1141 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1148 config SYS_SUPPORTS_APM_EMULATION
1151 config SYS_SUPPORTS_BIG_ENDIAN
1154 config SYS_SUPPORTS_LITTLE_ENDIAN
1157 config SYS_SUPPORTS_HUGETLBFS
1159 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1162 config MIPS_HUGE_TLB_SUPPORT
1163 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1180 config PCI_GT64XXX_PCI0
1183 config NO_EXCEPT_FILL
1190 select DMA_NONCOHERENT
1192 select SWAP_IO_SPACE
1193 select SYS_HAS_CPU_R5500
1194 select SYS_SUPPORTS_32BIT_KERNEL
1195 select SYS_SUPPORTS_64BIT_KERNEL
1196 select SYS_SUPPORTS_BIG_ENDIAN
1203 select DMA_NONCOHERENT
1204 select SYS_HAS_CPU_MIPS32_R2
1205 select SYS_SUPPORTS_32BIT_KERNEL
1206 select SYS_SUPPORTS_LITTLE_ENDIAN
1207 select SYS_SUPPORTS_BIG_ENDIAN
1208 select SYS_SUPPORTS_MIPS16
1209 select CPU_MIPSR2_IRQ_VI
1218 config SWAP_IO_SPACE
1221 config SGI_HAS_INDYDOG
1233 config SGI_HAS_ZILOG
1236 config SGI_HAS_I8042
1239 config DEFAULT_SGI_PARTITION
1251 config MIPS_L1_CACHE_SHIFT_4
1254 config MIPS_L1_CACHE_SHIFT_5
1257 config MIPS_L1_CACHE_SHIFT_6
1260 config MIPS_L1_CACHE_SHIFT_7
1263 config MIPS_L1_CACHE_SHIFT
1265 default "7" if MIPS_L1_CACHE_SHIFT_7
1266 default "6" if MIPS_L1_CACHE_SHIFT_6
1267 default "5" if MIPS_L1_CACHE_SHIFT_5
1268 default "4" if MIPS_L1_CACHE_SHIFT_4
1271 config HAVE_STD_PC_SERIAL_PORT
1275 bool "ARC console support"
1276 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1280 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1285 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1294 menu "CPU selection"
1300 config CPU_LOONGSON3
1301 bool "Loongson 3 CPU"
1302 depends on SYS_HAS_CPU_LOONGSON3
1303 select CPU_SUPPORTS_64BIT_KERNEL
1304 select CPU_SUPPORTS_HIGHMEM
1305 select CPU_SUPPORTS_HUGEPAGES
1306 select WEAK_ORDERING
1307 select WEAK_REORDERING_BEYOND_LLSC
1308 select ARCH_REQUIRE_GPIOLIB
1310 The Loongson 3 processor implements the MIPS64R2 instruction
1311 set with many extensions.
1313 config CPU_LOONGSON2E
1315 depends on SYS_HAS_CPU_LOONGSON2E
1316 select CPU_LOONGSON2
1318 The Loongson 2E processor implements the MIPS III instruction set
1319 with many extensions.
1321 It has an internal FPGA northbridge, which is compatible to
1324 config CPU_LOONGSON2F
1326 depends on SYS_HAS_CPU_LOONGSON2F
1327 select CPU_LOONGSON2
1328 select ARCH_REQUIRE_GPIOLIB
1330 The Loongson 2F processor implements the MIPS III instruction set
1331 with many extensions.
1333 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1334 have a similar programming interface with FPGA northbridge used in
1337 config CPU_LOONGSON1B
1339 depends on SYS_HAS_CPU_LOONGSON1B
1340 select CPU_LOONGSON1
1342 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1343 release 2 instruction set.
1345 config CPU_MIPS32_R1
1346 bool "MIPS32 Release 1"
1347 depends on SYS_HAS_CPU_MIPS32_R1
1348 select CPU_HAS_PREFETCH
1349 select CPU_SUPPORTS_32BIT_KERNEL
1350 select CPU_SUPPORTS_HIGHMEM
1352 Choose this option to build a kernel for release 1 or later of the
1353 MIPS32 architecture. Most modern embedded systems with a 32-bit
1354 MIPS processor are based on a MIPS32 processor. If you know the
1355 specific type of processor in your system, choose those that one
1356 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1357 Release 2 of the MIPS32 architecture is available since several
1358 years so chances are you even have a MIPS32 Release 2 processor
1359 in which case you should choose CPU_MIPS32_R2 instead for better
1362 config CPU_MIPS32_R2
1363 bool "MIPS32 Release 2"
1364 depends on SYS_HAS_CPU_MIPS32_R2
1365 select CPU_HAS_PREFETCH
1366 select CPU_SUPPORTS_32BIT_KERNEL
1367 select CPU_SUPPORTS_HIGHMEM
1368 select CPU_SUPPORTS_MSA
1371 Choose this option to build a kernel for release 2 or later of the
1372 MIPS32 architecture. Most modern embedded systems with a 32-bit
1373 MIPS processor are based on a MIPS32 processor. If you know the
1374 specific type of processor in your system, choose those that one
1375 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1377 config CPU_MIPS32_R6
1378 bool "MIPS32 Release 6"
1379 depends on SYS_HAS_CPU_MIPS32_R6
1380 select CPU_HAS_PREFETCH
1381 select CPU_SUPPORTS_32BIT_KERNEL
1382 select CPU_SUPPORTS_HIGHMEM
1383 select CPU_SUPPORTS_MSA
1386 select MIPS_O32_FP64_SUPPORT
1388 Choose this option to build a kernel for release 6 or later of the
1389 MIPS32 architecture. New MIPS processors, starting with the Warrior
1390 family, are based on a MIPS32r6 processor. If you own an older
1391 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1393 config CPU_MIPS64_R1
1394 bool "MIPS64 Release 1"
1395 depends on SYS_HAS_CPU_MIPS64_R1
1396 select CPU_HAS_PREFETCH
1397 select CPU_SUPPORTS_32BIT_KERNEL
1398 select CPU_SUPPORTS_64BIT_KERNEL
1399 select CPU_SUPPORTS_HIGHMEM
1400 select CPU_SUPPORTS_HUGEPAGES
1402 Choose this option to build a kernel for release 1 or later of the
1403 MIPS64 architecture. Many modern embedded systems with a 64-bit
1404 MIPS processor are based on a MIPS64 processor. If you know the
1405 specific type of processor in your system, choose those that one
1406 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1407 Release 2 of the MIPS64 architecture is available since several
1408 years so chances are you even have a MIPS64 Release 2 processor
1409 in which case you should choose CPU_MIPS64_R2 instead for better
1412 config CPU_MIPS64_R2
1413 bool "MIPS64 Release 2"
1414 depends on SYS_HAS_CPU_MIPS64_R2
1415 select CPU_HAS_PREFETCH
1416 select CPU_SUPPORTS_32BIT_KERNEL
1417 select CPU_SUPPORTS_64BIT_KERNEL
1418 select CPU_SUPPORTS_HIGHMEM
1419 select CPU_SUPPORTS_HUGEPAGES
1420 select CPU_SUPPORTS_MSA
1422 Choose this option to build a kernel for release 2 or later of the
1423 MIPS64 architecture. Many modern embedded systems with a 64-bit
1424 MIPS processor are based on a MIPS64 processor. If you know the
1425 specific type of processor in your system, choose those that one
1426 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1428 config CPU_MIPS64_R6
1429 bool "MIPS64 Release 6"
1430 depends on SYS_HAS_CPU_MIPS64_R6
1431 select CPU_HAS_PREFETCH
1432 select CPU_SUPPORTS_32BIT_KERNEL
1433 select CPU_SUPPORTS_64BIT_KERNEL
1434 select CPU_SUPPORTS_HIGHMEM
1435 select CPU_SUPPORTS_MSA
1437 select MIPS_O32_FP64_SUPPORT if MIPS32_O32
1439 Choose this option to build a kernel for release 6 or later of the
1440 MIPS64 architecture. New MIPS processors, starting with the Warrior
1441 family, are based on a MIPS64r6 processor. If you own an older
1442 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1446 depends on SYS_HAS_CPU_R3000
1448 select CPU_SUPPORTS_32BIT_KERNEL
1449 select CPU_SUPPORTS_HIGHMEM
1451 Please make sure to pick the right CPU type. Linux/MIPS is not
1452 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1453 *not* work on R4000 machines and vice versa. However, since most
1454 of the supported machines have an R4000 (or similar) CPU, R4x00
1455 might be a safe bet. If the resulting kernel does not work,
1456 try to recompile with R3000.
1460 depends on SYS_HAS_CPU_TX39XX
1461 select CPU_SUPPORTS_32BIT_KERNEL
1465 depends on SYS_HAS_CPU_VR41XX
1466 select CPU_SUPPORTS_32BIT_KERNEL
1467 select CPU_SUPPORTS_64BIT_KERNEL
1469 The options selects support for the NEC VR4100 series of processors.
1470 Only choose this option if you have one of these processors as a
1471 kernel built with this option will not run on any other type of
1472 processor or vice versa.
1476 depends on SYS_HAS_CPU_R4300
1477 select CPU_SUPPORTS_32BIT_KERNEL
1478 select CPU_SUPPORTS_64BIT_KERNEL
1480 MIPS Technologies R4300-series processors.
1484 depends on SYS_HAS_CPU_R4X00
1485 select CPU_SUPPORTS_32BIT_KERNEL
1486 select CPU_SUPPORTS_64BIT_KERNEL
1487 select CPU_SUPPORTS_HUGEPAGES
1489 MIPS Technologies R4000-series processors other than 4300, including
1490 the R4000, R4400, R4600, and 4700.
1494 depends on SYS_HAS_CPU_TX49XX
1495 select CPU_HAS_PREFETCH
1496 select CPU_SUPPORTS_32BIT_KERNEL
1497 select CPU_SUPPORTS_64BIT_KERNEL
1498 select CPU_SUPPORTS_HUGEPAGES
1502 depends on SYS_HAS_CPU_R5000
1503 select CPU_SUPPORTS_32BIT_KERNEL
1504 select CPU_SUPPORTS_64BIT_KERNEL
1505 select CPU_SUPPORTS_HUGEPAGES
1507 MIPS Technologies R5000-series processors other than the Nevada.
1511 depends on SYS_HAS_CPU_R5432
1512 select CPU_SUPPORTS_32BIT_KERNEL
1513 select CPU_SUPPORTS_64BIT_KERNEL
1514 select CPU_SUPPORTS_HUGEPAGES
1518 depends on SYS_HAS_CPU_R5500
1519 select CPU_SUPPORTS_32BIT_KERNEL
1520 select CPU_SUPPORTS_64BIT_KERNEL
1521 select CPU_SUPPORTS_HUGEPAGES
1523 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1528 depends on SYS_HAS_CPU_R6000
1529 select CPU_SUPPORTS_32BIT_KERNEL
1531 MIPS Technologies R6000 and R6000A series processors. Note these
1532 processors are extremely rare and the support for them is incomplete.
1536 depends on SYS_HAS_CPU_NEVADA
1537 select CPU_SUPPORTS_32BIT_KERNEL
1538 select CPU_SUPPORTS_64BIT_KERNEL
1539 select CPU_SUPPORTS_HUGEPAGES
1541 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1545 depends on SYS_HAS_CPU_R8000
1546 select CPU_HAS_PREFETCH
1547 select CPU_SUPPORTS_64BIT_KERNEL
1549 MIPS Technologies R8000 processors. Note these processors are
1550 uncommon and the support for them is incomplete.
1554 depends on SYS_HAS_CPU_R10000
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
1561 MIPS Technologies R10000-series processors.
1565 depends on SYS_HAS_CPU_RM7000
1566 select CPU_HAS_PREFETCH
1567 select CPU_SUPPORTS_32BIT_KERNEL
1568 select CPU_SUPPORTS_64BIT_KERNEL
1569 select CPU_SUPPORTS_HIGHMEM
1570 select CPU_SUPPORTS_HUGEPAGES
1574 depends on SYS_HAS_CPU_SB1
1575 select CPU_SUPPORTS_32BIT_KERNEL
1576 select CPU_SUPPORTS_64BIT_KERNEL
1577 select CPU_SUPPORTS_HIGHMEM
1578 select CPU_SUPPORTS_HUGEPAGES
1579 select WEAK_ORDERING
1581 config CPU_CAVIUM_OCTEON
1582 bool "Cavium Octeon processor"
1583 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1584 select CPU_HAS_PREFETCH
1585 select CPU_SUPPORTS_64BIT_KERNEL
1586 select WEAK_ORDERING
1587 select CPU_SUPPORTS_HIGHMEM
1588 select CPU_SUPPORTS_HUGEPAGES
1589 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1590 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1591 select MIPS_L1_CACHE_SHIFT_7
1593 The Cavium Octeon processor is a highly integrated chip containing
1594 many ethernet hardware widgets for networking tasks. The processor
1595 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1596 Full details can be found at http://www.caviumnetworks.com.
1599 bool "Broadcom BMIPS"
1600 depends on SYS_HAS_CPU_BMIPS
1602 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1603 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1604 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1605 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1606 select CPU_SUPPORTS_32BIT_KERNEL
1607 select DMA_NONCOHERENT
1609 select SWAP_IO_SPACE
1610 select WEAK_ORDERING
1611 select CPU_SUPPORTS_HIGHMEM
1612 select CPU_HAS_PREFETCH
1614 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1617 bool "Netlogic XLR SoC"
1618 depends on SYS_HAS_CPU_XLR
1619 select CPU_SUPPORTS_32BIT_KERNEL
1620 select CPU_SUPPORTS_64BIT_KERNEL
1621 select CPU_SUPPORTS_HIGHMEM
1622 select CPU_SUPPORTS_HUGEPAGES
1623 select WEAK_ORDERING
1624 select WEAK_REORDERING_BEYOND_LLSC
1626 Netlogic Microsystems XLR/XLS processors.
1629 bool "Netlogic XLP SoC"
1630 depends on SYS_HAS_CPU_XLP
1631 select CPU_SUPPORTS_32BIT_KERNEL
1632 select CPU_SUPPORTS_64BIT_KERNEL
1633 select CPU_SUPPORTS_HIGHMEM
1634 select WEAK_ORDERING
1635 select WEAK_REORDERING_BEYOND_LLSC
1636 select CPU_HAS_PREFETCH
1638 select CPU_SUPPORTS_HUGEPAGES
1640 Netlogic Microsystems XLP processors.
1643 config CPU_MIPS32_3_5_FEATURES
1644 bool "MIPS32 Release 3.5 Features"
1645 depends on SYS_HAS_CPU_MIPS32_R3_5
1646 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1648 Choose this option to build a kernel for release 2 or later of the
1649 MIPS32 architecture including features from the 3.5 release such as
1650 support for Enhanced Virtual Addressing (EVA).
1652 config CPU_MIPS32_3_5_EVA
1653 bool "Enhanced Virtual Addressing (EVA)"
1654 depends on CPU_MIPS32_3_5_FEATURES
1658 Choose this option if you want to enable the Enhanced Virtual
1659 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1660 One of its primary benefits is an increase in the maximum size
1661 of lowmem (up to 3GB). If unsure, say 'N' here.
1663 config CPU_MIPS32_R5_FEATURES
1664 bool "MIPS32 Release 5 Features"
1665 depends on SYS_HAS_CPU_MIPS32_R5
1666 depends on CPU_MIPS32_R2
1668 Choose this option to build a kernel for release 2 or later of the
1669 MIPS32 architecture including features from release 5 such as
1670 support for Extended Physical Addressing (XPA).
1672 config CPU_MIPS32_R5_XPA
1673 bool "Extended Physical Addressing (XPA)"
1674 depends on CPU_MIPS32_R5_FEATURES
1676 depends on !PAGE_SIZE_4KB
1677 depends on SYS_SUPPORTS_HIGHMEM
1680 select ARCH_PHYS_ADDR_T_64BIT
1683 Choose this option if you want to enable the Extended Physical
1684 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1685 benefit is to increase physical addressing equal to or greater
1686 than 40 bits. Note that this has the side effect of turning on
1687 64-bit addressing which in turn makes the PTEs 64-bit in size.
1688 If unsure, say 'N' here.
1691 config CPU_NOP_WORKAROUNDS
1694 config CPU_JUMP_WORKAROUNDS
1697 config CPU_LOONGSON2F_WORKAROUNDS
1698 bool "Loongson 2F Workarounds"
1700 select CPU_NOP_WORKAROUNDS
1701 select CPU_JUMP_WORKAROUNDS
1703 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1704 require workarounds. Without workarounds the system may hang
1705 unexpectedly. For more information please refer to the gas
1706 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1708 Loongson 2F03 and later have fixed these issues and no workarounds
1709 are needed. The workarounds have no significant side effect on them
1710 but may decrease the performance of the system so this option should
1711 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1714 If unsure, please say Y.
1715 endif # CPU_LOONGSON2F
1717 config SYS_SUPPORTS_ZBOOT
1719 select HAVE_KERNEL_GZIP
1720 select HAVE_KERNEL_BZIP2
1721 select HAVE_KERNEL_LZ4
1722 select HAVE_KERNEL_LZMA
1723 select HAVE_KERNEL_LZO
1724 select HAVE_KERNEL_XZ
1726 config SYS_SUPPORTS_ZBOOT_UART16550
1728 select SYS_SUPPORTS_ZBOOT
1730 config CPU_LOONGSON2
1732 select CPU_SUPPORTS_32BIT_KERNEL
1733 select CPU_SUPPORTS_64BIT_KERNEL
1734 select CPU_SUPPORTS_HIGHMEM
1735 select CPU_SUPPORTS_HUGEPAGES
1737 config CPU_LOONGSON1
1741 select CPU_HAS_PREFETCH
1742 select CPU_SUPPORTS_32BIT_KERNEL
1743 select CPU_SUPPORTS_HIGHMEM
1744 select CPU_SUPPORTS_CPUFREQ
1746 config CPU_BMIPS32_3300
1747 select SMP_UP if SMP
1750 config CPU_BMIPS4350
1752 select SYS_SUPPORTS_SMP
1753 select SYS_SUPPORTS_HOTPLUG_CPU
1755 config CPU_BMIPS4380
1757 select MIPS_L1_CACHE_SHIFT_6
1758 select SYS_SUPPORTS_SMP
1759 select SYS_SUPPORTS_HOTPLUG_CPU
1761 config CPU_BMIPS5000
1763 select MIPS_CPU_SCACHE
1764 select MIPS_L1_CACHE_SHIFT_7
1765 select SYS_SUPPORTS_SMP
1766 select SYS_SUPPORTS_HOTPLUG_CPU
1768 config SYS_HAS_CPU_LOONGSON3
1770 select CPU_SUPPORTS_CPUFREQ
1772 config SYS_HAS_CPU_LOONGSON2E
1775 config SYS_HAS_CPU_LOONGSON2F
1777 select CPU_SUPPORTS_CPUFREQ
1778 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1779 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1781 config SYS_HAS_CPU_LOONGSON1B
1784 config SYS_HAS_CPU_MIPS32_R1
1787 config SYS_HAS_CPU_MIPS32_R2
1790 config SYS_HAS_CPU_MIPS32_R3_5
1793 config SYS_HAS_CPU_MIPS32_R5
1796 config SYS_HAS_CPU_MIPS32_R6
1799 config SYS_HAS_CPU_MIPS64_R1
1802 config SYS_HAS_CPU_MIPS64_R2
1805 config SYS_HAS_CPU_MIPS64_R6
1808 config SYS_HAS_CPU_R3000
1811 config SYS_HAS_CPU_TX39XX
1814 config SYS_HAS_CPU_VR41XX
1817 config SYS_HAS_CPU_R4300
1820 config SYS_HAS_CPU_R4X00
1823 config SYS_HAS_CPU_TX49XX
1826 config SYS_HAS_CPU_R5000
1829 config SYS_HAS_CPU_R5432
1832 config SYS_HAS_CPU_R5500
1835 config SYS_HAS_CPU_R6000
1838 config SYS_HAS_CPU_NEVADA
1841 config SYS_HAS_CPU_R8000
1844 config SYS_HAS_CPU_R10000
1847 config SYS_HAS_CPU_RM7000
1850 config SYS_HAS_CPU_SB1
1853 config SYS_HAS_CPU_CAVIUM_OCTEON
1856 config SYS_HAS_CPU_BMIPS
1859 config SYS_HAS_CPU_BMIPS32_3300
1861 select SYS_HAS_CPU_BMIPS
1863 config SYS_HAS_CPU_BMIPS4350
1865 select SYS_HAS_CPU_BMIPS
1867 config SYS_HAS_CPU_BMIPS4380
1869 select SYS_HAS_CPU_BMIPS
1871 config SYS_HAS_CPU_BMIPS5000
1873 select SYS_HAS_CPU_BMIPS
1875 config SYS_HAS_CPU_XLR
1878 config SYS_HAS_CPU_XLP
1881 config MIPS_MALTA_PM
1882 depends on MIPS_MALTA
1888 # CPU may reorder R->R, R->W, W->R, W->W
1889 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1891 config WEAK_ORDERING
1895 # CPU may reorder reads and writes beyond LL/SC
1896 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1898 config WEAK_REORDERING_BEYOND_LLSC
1903 # These two indicate any level of the MIPS32 and MIPS64 architecture
1907 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1911 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1914 # These two indicate the revision of the architecture, either Release 1 or Release 2
1918 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1922 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1927 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1936 config SYS_SUPPORTS_32BIT_KERNEL
1938 config SYS_SUPPORTS_64BIT_KERNEL
1940 config CPU_SUPPORTS_32BIT_KERNEL
1942 config CPU_SUPPORTS_64BIT_KERNEL
1944 config CPU_SUPPORTS_CPUFREQ
1946 config CPU_SUPPORTS_ADDRWINCFG
1948 config CPU_SUPPORTS_HUGEPAGES
1950 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1952 config MIPS_PGD_C0_CONTEXT
1954 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1957 # Set to y for ptrace access to watch registers.
1959 config HARDWARE_WATCHPOINTS
1961 default y if CPU_MIPSR1 || CPU_MIPSR2
1966 prompt "Kernel code model"
1968 You should only select this option if you have a workload that
1969 actually benefits from 64-bit processing or if your machine has
1970 large memory. You will only be presented a single option in this
1971 menu if your system does not support both 32-bit and 64-bit kernels.
1974 bool "32-bit kernel"
1975 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1978 Select this option if you want to build a 32-bit kernel.
1981 bool "64-bit kernel"
1982 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1984 Select this option if you want to build a 64-bit kernel.
1989 bool "KVM Guest Kernel"
1990 depends on BROKEN_ON_SMP
1992 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1994 config KVM_GUEST_TIMER_FREQ
1995 int "Count/Compare Timer Frequency (MHz)"
1996 depends on KVM_GUEST
1999 Set this to non-zero if building a guest kernel for KVM to skip RTC
2000 emulation when determining guest CPU Frequency. Instead, the guest's
2001 timer frequency is specified directly.
2004 prompt "Kernel page size"
2005 default PAGE_SIZE_4KB
2007 config PAGE_SIZE_4KB
2009 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2011 This option select the standard 4kB Linux page size. On some
2012 R3000-family processors this is the only available page size. Using
2013 4kB page size will minimize memory consumption and is therefore
2014 recommended for low memory systems.
2016 config PAGE_SIZE_8KB
2018 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2020 Using 8kB page size will result in higher performance kernel at
2021 the price of higher memory consumption. This option is available
2022 only on R8000 and cnMIPS processors. Note that you will need a
2023 suitable Linux distribution to support this.
2025 config PAGE_SIZE_16KB
2027 depends on !CPU_R3000 && !CPU_TX39XX
2029 Using 16kB page size will result in higher performance kernel at
2030 the price of higher memory consumption. This option is available on
2031 all non-R3000 family processors. Note that you will need a suitable
2032 Linux distribution to support this.
2034 config PAGE_SIZE_32KB
2036 depends on CPU_CAVIUM_OCTEON
2038 Using 32kB page size will result in higher performance kernel at
2039 the price of higher memory consumption. This option is available
2040 only on cnMIPS cores. Note that you will need a suitable Linux
2041 distribution to support this.
2043 config PAGE_SIZE_64KB
2045 depends on !CPU_R3000 && !CPU_TX39XX
2047 Using 64kB page size will result in higher performance kernel at
2048 the price of higher memory consumption. This option is available on
2049 all non-R3000 family processor. Not that at the time of this
2050 writing this option is still high experimental.
2054 config FORCE_MAX_ZONEORDER
2055 int "Maximum zone order"
2056 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2057 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2058 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2059 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2060 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2061 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2065 The kernel memory allocator divides physically contiguous memory
2066 blocks into "zones", where each zone is a power of two number of
2067 pages. This option selects the largest power of two that the kernel
2068 keeps in the memory allocator. If you need to allocate very large
2069 blocks of physically contiguous memory, then you may need to
2070 increase this value.
2072 This config option is actually maximum order plus one. For example,
2073 a value of 11 means that the largest free memory block is 2^10 pages.
2075 The page size is not necessarily 4KB. Keep this in mind
2076 when choosing a value for this option.
2081 config IP22_CPU_SCACHE
2086 # Support for a MIPS32 / MIPS64 style S-caches
2088 config MIPS_CPU_SCACHE
2092 config R5000_CPU_SCACHE
2096 config RM7000_CPU_SCACHE
2100 config SIBYTE_DMA_PAGEOPS
2101 bool "Use DMA to clear/copy pages"
2104 Instead of using the CPU to zero and copy pages, use a Data Mover
2105 channel. These DMA channels are otherwise unused by the standard
2106 SiByte Linux port. Seems to give a small performance benefit.
2108 config CPU_HAS_PREFETCH
2111 config CPU_GENERIC_DUMP_TLB
2113 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2117 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2119 config CPU_R4K_CACHE_TLB
2121 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2124 bool "MIPS MT SMP support (1 TC on each available VPE)"
2125 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2126 select CPU_MIPSR2_IRQ_VI
2127 select CPU_MIPSR2_IRQ_EI
2133 select SYS_SUPPORTS_SMP
2134 select SYS_SUPPORTS_SCHED_SMT
2135 select MIPS_PERF_SHARED_TC_COUNTERS
2137 This is a kernel model which is known as SMVP. This is supported
2138 on cores with the MT ASE and uses the available VPEs to implement
2139 virtual processors which supports SMP. This is equivalent to the
2140 Intel Hyperthreading feature. For further information go to
2141 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2147 bool "SMT (multithreading) scheduler support"
2148 depends on SYS_SUPPORTS_SCHED_SMT
2151 SMT scheduler support improves the CPU scheduler's decision making
2152 when dealing with MIPS MT enabled cores at a cost of slightly
2153 increased overhead in some places. If unsure say N here.
2155 config SYS_SUPPORTS_SCHED_SMT
2158 config SYS_SUPPORTS_MULTITHREADING
2161 config MIPS_MT_FPAFF
2162 bool "Dynamic FPU affinity for FP-intensive threads"
2164 depends on MIPS_MT_SMP
2166 config MIPSR2_TO_R6_EMULATOR
2167 bool "MIPS R2-to-R6 emulator"
2168 depends on CPU_MIPSR6 && !SMP
2171 Choose this option if you want to run non-R6 MIPS userland code.
2172 Even if you say 'Y' here, the emulator will still be disabled by
2173 default. You can enable it using the 'mipsr2emu' kernel option.
2174 The only reason this is a build-time option is to save ~14K from the
2176 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2177 depends on SMP && CPU_MIPSR6
2179 config MIPS_VPE_LOADER
2180 bool "VPE loader support."
2181 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2182 select CPU_MIPSR2_IRQ_VI
2183 select CPU_MIPSR2_IRQ_EI
2186 Includes a loader for loading an elf relocatable object
2187 onto another VPE and running it.
2189 config MIPS_VPE_LOADER_CMP
2192 depends on MIPS_VPE_LOADER && MIPS_CMP
2194 config MIPS_VPE_LOADER_MT
2197 depends on MIPS_VPE_LOADER && !MIPS_CMP
2199 config MIPS_VPE_LOADER_TOM
2200 bool "Load VPE program into memory hidden from linux"
2201 depends on MIPS_VPE_LOADER
2204 The loader can use memory that is present but has been hidden from
2205 Linux using the kernel command line option "mem=xxMB". It's up to
2206 you to ensure the amount you put in the option and the space your
2207 program requires is less or equal to the amount physically present.
2209 config MIPS_VPE_APSP_API
2210 bool "Enable support for AP/SP API (RTLX)"
2211 depends on MIPS_VPE_LOADER
2214 config MIPS_VPE_APSP_API_CMP
2217 depends on MIPS_VPE_APSP_API && MIPS_CMP
2219 config MIPS_VPE_APSP_API_MT
2222 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2225 bool "MIPS CMP framework support (DEPRECATED)"
2226 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2230 select SYS_SUPPORTS_SMP
2231 select WEAK_ORDERING
2234 Select this if you are using a bootloader which implements the "CMP
2235 framework" protocol (ie. YAMON) and want your kernel to make use of
2236 its ability to start secondary CPUs.
2238 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2242 bool "MIPS Coherent Processing System support"
2243 depends on SYS_SUPPORTS_MIPS_CPS && !CPU_MIPSR6
2246 select MIPS_CPS_PM if HOTPLUG_CPU
2249 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2250 select SYS_SUPPORTS_HOTPLUG_CPU
2251 select SYS_SUPPORTS_SMP
2252 select WEAK_ORDERING
2254 Select this if you wish to run an SMP kernel across multiple cores
2255 within a MIPS Coherent Processing System. When this option is
2256 enabled the kernel will probe for other cores and boot them with
2257 no external assistance. It is safe to enable this when hardware
2258 support is unavailable.
2274 config SB1_PASS_2_WORKAROUNDS
2276 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2279 config SB1_PASS_2_1_WORKAROUNDS
2281 depends on CPU_SB1 && CPU_SB1_PASS_2
2285 config ARCH_PHYS_ADDR_T_64BIT
2289 prompt "SmartMIPS or microMIPS ASE support"
2291 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2294 Select this if you want neither microMIPS nor SmartMIPS support
2296 config CPU_HAS_SMARTMIPS
2297 depends on SYS_SUPPORTS_SMARTMIPS
2300 SmartMIPS is a extension of the MIPS32 architecture aimed at
2301 increased security at both hardware and software level for
2302 smartcards. Enabling this option will allow proper use of the
2303 SmartMIPS instructions by Linux applications. However a kernel with
2304 this option will not work on a MIPS core without SmartMIPS core. If
2305 you don't know you probably don't have SmartMIPS and should say N
2308 config CPU_MICROMIPS
2309 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2312 When this option is enabled the kernel will be built using the
2318 bool "Support for the MIPS SIMD Architecture"
2319 depends on CPU_SUPPORTS_MSA
2320 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2322 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2323 and a set of SIMD instructions to operate on them. When this option
2324 is enabled the kernel will support allocating & switching MSA
2325 vector register contexts. If you know that your kernel will only be
2326 running on CPUs which do not support MSA or that your userland will
2327 not be making use of it then you may wish to say N here to reduce
2328 the size & complexity of your kernel.
2339 # Vectored interrupt mode is an R2 feature
2341 config CPU_MIPSR2_IRQ_VI
2345 # Extended interrupt mode is an R2 feature
2347 config CPU_MIPSR2_IRQ_EI
2352 depends on !CPU_R3000
2358 config CPU_DADDI_WORKAROUNDS
2361 config CPU_R4000_WORKAROUNDS
2363 select CPU_R4400_WORKAROUNDS
2365 config CPU_R4400_WORKAROUNDS
2369 # - Highmem only makes sense for the 32-bit kernel.
2370 # - The current highmem code will only work properly on physically indexed
2371 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2372 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2373 # moment we protect the user and offer the highmem option only on machines
2374 # where it's known to be safe. This will not offer highmem on a few systems
2375 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2376 # indexed CPUs but we're playing safe.
2377 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2378 # know they might have memory configurations that could make use of highmem
2382 bool "High Memory Support"
2383 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2385 config CPU_SUPPORTS_HIGHMEM
2388 config SYS_SUPPORTS_HIGHMEM
2391 config SYS_SUPPORTS_SMARTMIPS
2394 config SYS_SUPPORTS_MICROMIPS
2397 config SYS_SUPPORTS_MIPS16
2400 This option must be set if a kernel might be executed on a MIPS16-
2401 enabled CPU even if MIPS16 is not actually being used. In other
2402 words, it makes the kernel MIPS16-tolerant.
2404 config CPU_SUPPORTS_MSA
2407 config ARCH_FLATMEM_ENABLE
2409 depends on !NUMA && !CPU_LOONGSON2
2411 config ARCH_DISCONTIGMEM_ENABLE
2413 default y if SGI_IP27
2415 Say Y to support efficient handling of discontiguous physical memory,
2416 for architectures which are either NUMA (Non-Uniform Memory Access)
2417 or have huge holes in the physical address space for other reasons.
2418 See <file:Documentation/vm/numa> for more.
2420 config ARCH_SPARSEMEM_ENABLE
2422 select SPARSEMEM_STATIC
2426 depends on SYS_SUPPORTS_NUMA
2428 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2429 Access). This option improves performance on systems with more
2430 than two nodes; on two node systems it is generally better to
2431 leave it disabled; on single node systems disable this option
2434 config SYS_SUPPORTS_NUMA
2440 depends on NEED_MULTIPLE_NODES
2442 config HW_PERF_EVENTS
2443 bool "Enable hardware performance counter support for perf events"
2444 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2447 Enable hardware performance counter support for perf events. If
2448 disabled, perf events will use software events only.
2453 bool "Multi-Processing support"
2454 depends on SYS_SUPPORTS_SMP
2456 This enables support for systems with more than one CPU. If you have
2457 a system with only one CPU, say N. If you have a system with more
2458 than one CPU, say Y.
2460 If you say N here, the kernel will run on uni- and multiprocessor
2461 machines, but will use only one CPU of a multiprocessor machine. If
2462 you say Y here, the kernel will run on many, but not all,
2463 uniprocessor machines. On a uniprocessor machine, the kernel
2464 will run faster if you say N here.
2466 People using multiprocessor machines who say Y here should also say
2467 Y to "Enhanced Real Time Clock Support", below.
2469 See also the SMP-HOWTO available at
2470 <http://www.tldp.org/docs.html#howto>.
2472 If you don't know what to do here, say N.
2477 config SYS_SUPPORTS_MIPS_CMP
2480 config SYS_SUPPORTS_MIPS_CPS
2483 config SYS_SUPPORTS_SMP
2486 config NR_CPUS_DEFAULT_4
2489 config NR_CPUS_DEFAULT_8
2492 config NR_CPUS_DEFAULT_16
2495 config NR_CPUS_DEFAULT_32
2498 config NR_CPUS_DEFAULT_64
2502 int "Maximum number of CPUs (2-256)"
2505 default "4" if NR_CPUS_DEFAULT_4
2506 default "8" if NR_CPUS_DEFAULT_8
2507 default "16" if NR_CPUS_DEFAULT_16
2508 default "32" if NR_CPUS_DEFAULT_32
2509 default "64" if NR_CPUS_DEFAULT_64
2511 This allows you to specify the maximum number of CPUs which this
2512 kernel will support. The maximum supported value is 32 for 32-bit
2513 kernel and 64 for 64-bit kernels; the minimum value which makes
2514 sense is 1 for Qemu (useful only for kernel debugging purposes)
2515 and 2 for all others.
2517 This is purely to save memory - each supported CPU adds
2518 approximately eight kilobytes to the kernel image. For best
2519 performance should round up your number of processors to the next
2522 config MIPS_PERF_SHARED_TC_COUNTERS
2526 # Timer Interrupt Frequency Configuration
2530 prompt "Timer frequency"
2533 Allows the configuration of the timer frequency.
2536 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2539 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2542 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2545 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2548 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2551 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2554 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2557 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2561 config SYS_SUPPORTS_24HZ
2564 config SYS_SUPPORTS_48HZ
2567 config SYS_SUPPORTS_100HZ
2570 config SYS_SUPPORTS_128HZ
2573 config SYS_SUPPORTS_250HZ
2576 config SYS_SUPPORTS_256HZ
2579 config SYS_SUPPORTS_1000HZ
2582 config SYS_SUPPORTS_1024HZ
2585 config SYS_SUPPORTS_ARBIT_HZ
2587 default y if !SYS_SUPPORTS_24HZ && \
2588 !SYS_SUPPORTS_48HZ && \
2589 !SYS_SUPPORTS_100HZ && \
2590 !SYS_SUPPORTS_128HZ && \
2591 !SYS_SUPPORTS_250HZ && \
2592 !SYS_SUPPORTS_256HZ && \
2593 !SYS_SUPPORTS_1000HZ && \
2594 !SYS_SUPPORTS_1024HZ
2600 default 100 if HZ_100
2601 default 128 if HZ_128
2602 default 250 if HZ_250
2603 default 256 if HZ_256
2604 default 1000 if HZ_1000
2605 default 1024 if HZ_1024
2608 def_bool HIGH_RES_TIMERS
2610 source "kernel/Kconfig.preempt"
2613 bool "Kexec system call"
2616 kexec is a system call that implements the ability to shutdown your
2617 current kernel, and to start another kernel. It is like a reboot
2618 but it is independent of the system firmware. And like a reboot
2619 you can start any kernel with it, not just Linux.
2621 The name comes from the similarity to the exec system call.
2623 It is an ongoing process to be certain the hardware in a machine
2624 is properly shutdown, so do not be surprised if this code does not
2625 initially work for you. As of this writing the exact hardware
2626 interface is strongly in flux, so no good recommendation can be
2630 bool "Kernel crash dumps"
2632 Generate crash dump after being started by kexec.
2633 This should be normally only set in special crash dump kernels
2634 which are loaded in the main kernel with kexec-tools into
2635 a specially reserved region and then later executed after
2636 a crash by kdump/kexec. The crash dump kernel must be compiled
2637 to a memory address not used by the main kernel or firmware using
2640 config PHYSICAL_START
2641 hex "Physical address where the kernel is loaded"
2642 default "0xffffffff84000000" if 64BIT
2643 default "0x84000000" if 32BIT
2644 depends on CRASH_DUMP
2646 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2647 If you plan to use kernel for capturing the crash dump change
2648 this value to start of the reserved region (the "X" value as
2649 specified in the "crashkernel=YM@XM" command line boot parameter
2650 passed to the panic-ed kernel).
2653 bool "Enable seccomp to safely compute untrusted bytecode"
2657 This kernel feature is useful for number crunching applications
2658 that may need to compute untrusted bytecode during their
2659 execution. By using pipes or other transports made available to
2660 the process as file descriptors supporting the read/write
2661 syscalls, it's possible to isolate those applications in
2662 their own address space using seccomp. Once seccomp is
2663 enabled via /proc/<pid>/seccomp, it cannot be disabled
2664 and the task is only allowed to execute a few safe syscalls
2665 defined by each seccomp mode.
2667 If unsure, say Y. Only embedded should say N here.
2669 config MIPS_O32_FP64_SUPPORT
2670 bool "Support for O32 binaries using 64-bit FP"
2671 depends on 32BIT || MIPS32_O32
2673 When this is enabled, the kernel will support use of 64-bit floating
2674 point registers with binaries using the O32 ABI along with the
2675 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2676 32-bit MIPS systems this support is at the cost of increasing the
2677 size and complexity of the compiled FPU emulator. Thus if you are
2678 running a MIPS32 system and know that none of your userland binaries
2679 will require 64-bit floating point, you may wish to reduce the size
2680 of your kernel & potentially improve FP emulation performance by
2683 Although binutils currently supports use of this flag the details
2684 concerning its effect upon the O32 ABI in userland are still being
2685 worked on. In order to avoid userland becoming dependant upon current
2686 behaviour before the details have been finalised, this option should
2687 be considered experimental and only enabled by those working upon
2695 select OF_EARLY_FLATTREE
2702 prompt "Kernel appended dtb support" if OF
2703 default MIPS_NO_APPENDED_DTB
2705 config MIPS_NO_APPENDED_DTB
2708 Do not enable appended dtb support.
2710 config MIPS_RAW_APPENDED_DTB
2713 With this option, the boot code will look for a device tree binary
2714 DTB) appended to raw vmlinux.bin (without decompressor).
2715 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2717 This is meant as a backward compatibility convenience for those
2718 systems with a bootloader that can't be upgraded to accommodate
2719 the documented boot protocol using a device tree.
2721 Beware that there is very little in terms of protection against
2722 this option being confused by leftover garbage in memory that might
2723 look like a DTB header after a reboot if no actual DTB is appended
2724 to vmlinux.bin. Do not leave this option active in a production kernel
2725 if you don't intend to always append a DTB.
2727 config MIPS_ZBOOT_APPENDED_DTB
2729 depends on SYS_SUPPORTS_ZBOOT
2731 With this option, the boot code will look for a device tree binary
2732 DTB) appended to raw vmlinuz.bin (with decompressor).
2733 (e.g. cat vmlinuz.bin <filename>.dtb > vmlinuz_w_dtb).
2735 This is meant as a backward compatibility convenience for those
2736 systems with a bootloader that can't be upgraded to accommodate
2737 the documented boot protocol using a device tree.
2739 Beware that there is very little in terms of protection against
2740 this option being confused by leftover garbage in memory that might
2741 look like a DTB header after a reboot if no actual DTB is appended
2742 to vmlinuz.bin. Do not leave this option active in a production kernel
2743 if you don't intend to always append a DTB.
2748 config LOCKDEP_SUPPORT
2752 config STACKTRACE_SUPPORT
2756 config PGTABLE_LEVELS
2758 default 3 if 64BIT && !PAGE_SIZE_64KB
2761 source "init/Kconfig"
2763 source "kernel/Kconfig.freezer"
2765 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2773 bool "Support for PCI controller"
2774 depends on HW_HAS_PCI
2776 select NO_GENERIC_PCI_IOPORT_MAP
2778 Find out whether you have a PCI motherboard. PCI is the name of a
2779 bus system, i.e. the way the CPU talks to the other stuff inside
2780 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2784 bool "Support for HT-linked PCI"
2786 depends on CPU_LOONGSON3
2790 Loongson family machines use Hyper-Transport bus for inter-core
2791 connection and device connection. The PCI bus is a subordinate
2792 linked at HT. Choose Y for Loongson-3 based machines.
2797 source "drivers/pci/Kconfig"
2799 source "drivers/pci/pcie/Kconfig"
2802 # ISA support is now enabled via select. Too many systems still have the one
2803 # or other ISA chip on the board that users don't know about so don't expect
2804 # users to choose the right thing ...
2811 depends on HW_HAS_EISA
2813 select GENERIC_ISA_DMA
2815 The Extended Industry Standard Architecture (EISA) bus was
2816 developed as an open alternative to the IBM MicroChannel bus.
2818 The EISA bus provided some of the features of the IBM MicroChannel
2819 bus while maintaining backward compatibility with cards made for
2820 the older ISA bus. The EISA bus saw limited use between 1988 and
2821 1995 when it was made obsolete by the PCI bus.
2823 Say Y here if you are building a kernel for an EISA-based machine.
2827 source "drivers/eisa/Kconfig"
2830 bool "TURBOchannel support"
2831 depends on MACH_DECSTATION
2833 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2834 processors. TURBOchannel programming specifications are available
2836 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2838 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2839 Linux driver support status is documented at:
2840 <http://www.linux-mips.org/wiki/DECstation>
2850 select MIPS_EXTERNAL_TIMER
2858 source "drivers/pcmcia/Kconfig"
2860 source "drivers/pci/hotplug/Kconfig"
2863 tristate "RapidIO support"
2867 If you say Y here, the kernel will include drivers and
2868 infrastructure code to support RapidIO interconnect devices.
2870 source "drivers/rapidio/Kconfig"
2874 menu "Executable file formats"
2876 source "fs/Kconfig.binfmt"
2881 config MIPS32_COMPAT
2887 config SYSVIPC_COMPAT
2891 bool "Kernel support for o32 binaries"
2893 select ARCH_WANT_OLD_COMPAT_IPC
2895 select MIPS32_COMPAT
2896 select SYSVIPC_COMPAT if SYSVIPC
2898 Select this option if you want to run o32 binaries. These are pure
2899 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2900 existing binaries are in this format.
2905 bool "Kernel support for n32 binaries"
2908 select MIPS32_COMPAT
2909 select SYSVIPC_COMPAT if SYSVIPC
2911 Select this option if you want to run n32 binaries. These are
2912 64-bit binaries using 32-bit quantities for addressing and certain
2913 data that would normally be 64-bit. They are used in special
2920 default y if MIPS32_O32 || MIPS32_N32
2924 menu "Power management options"
2926 config ARCH_HIBERNATION_POSSIBLE
2928 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2930 config ARCH_SUSPEND_POSSIBLE
2932 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2934 source "kernel/power/Kconfig"
2938 config MIPS_EXTERNAL_TIMER
2941 menu "CPU Power Management"
2943 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2944 source "drivers/cpufreq/Kconfig"
2947 source "drivers/cpuidle/Kconfig"
2951 source "net/Kconfig"
2953 source "drivers/Kconfig"
2955 source "drivers/firmware/Kconfig"
2959 source "arch/mips/Kconfig.debug"
2961 source "security/Kconfig"
2963 source "crypto/Kconfig"
2965 source "lib/Kconfig"
2967 source "arch/mips/kvm/Kconfig"