4 select ARCH_MIGHT_HAVE_PC_PARPORT
5 select ARCH_MIGHT_HAVE_PC_SERIO
6 select HAVE_CONTEXT_TRACKING
7 select HAVE_GENERIC_DMA_COHERENT
10 select HAVE_PERF_EVENTS
11 select PERF_USE_VMALLOC
13 select HAVE_ARCH_SECCOMP_FILTER
14 select HAVE_ARCH_TRACEHOOK
15 select HAVE_BPF_JIT if !CPU_MICROMIPS
16 select ARCH_HAVE_CUSTOM_GPIO_H
17 select HAVE_FUNCTION_TRACER
18 select HAVE_DYNAMIC_FTRACE
19 select HAVE_FTRACE_MCOUNT_RECORD
20 select HAVE_C_RECORDMCOUNT
21 select HAVE_FUNCTION_GRAPH_TRACER
23 select HAVE_KRETPROBES
24 select HAVE_DEBUG_KMEMLEAK
25 select HAVE_SYSCALL_TRACEPOINTS
26 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
27 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
28 select RTC_LIB if !MACH_LOONGSON
29 select GENERIC_ATOMIC64 if !64BIT
30 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
32 select HAVE_DMA_CONTIGUOUS
33 select HAVE_DMA_API_DEBUG
34 select GENERIC_IRQ_PROBE
35 select GENERIC_IRQ_SHOW
36 select GENERIC_PCI_IOMAP
37 select HAVE_ARCH_JUMP_LABEL
38 select ARCH_WANT_IPC_PARSE_VERSION
39 select IRQ_FORCED_THREADING
41 select HAVE_MEMBLOCK_NODE_MAP
42 select ARCH_DISCARD_MEMBLOCK
43 select GENERIC_SMP_IDLE_THREAD
44 select BUILDTIME_EXTABLE_SORT
45 select GENERIC_CLOCKEVENTS
46 select GENERIC_CMOS_UPDATE
47 select HAVE_MOD_ARCH_SPECIFIC
49 select MODULES_USE_ELF_REL if MODULES
50 select MODULES_USE_ELF_RELA if MODULES && 64BIT
51 select CLONE_BACKWARDS
52 select HAVE_DEBUG_STACKOVERFLOW
53 select HAVE_CC_STACKPROTECTOR
54 select CPU_PM if CPU_IDLE
55 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
56 select ARCH_BINFMT_ELF_STATE
57 select SYSCTL_EXCEPTION_TRACE
59 menu "Machine selection"
66 bool "Alchemy processor based machines"
67 select ARCH_PHYS_ADDR_T_64BIT
71 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
72 select SYS_HAS_CPU_MIPS32_R1
73 select SYS_SUPPORTS_32BIT_KERNEL
74 select SYS_SUPPORTS_APM_EMULATION
75 select ARCH_REQUIRE_GPIOLIB
76 select SYS_SUPPORTS_ZBOOT
80 bool "Texas Instruments AR7"
82 select DMA_NONCOHERENT
88 select SYS_HAS_CPU_MIPS32_R1
89 select SYS_HAS_EARLY_PRINTK
90 select SYS_SUPPORTS_32BIT_KERNEL
91 select SYS_SUPPORTS_LITTLE_ENDIAN
92 select SYS_SUPPORTS_MIPS16
93 select SYS_SUPPORTS_ZBOOT_UART16550
94 select ARCH_REQUIRE_GPIOLIB
98 Support for the Texas Instruments AR7 System-on-a-Chip
99 family: TNETD7100, 7200 and 7300.
102 bool "Atheros AR231x/AR531x SoC support"
105 select DMA_NONCOHERENT
108 select SYS_HAS_CPU_MIPS32_R1
109 select SYS_SUPPORTS_BIG_ENDIAN
110 select SYS_SUPPORTS_32BIT_KERNEL
111 select SYS_HAS_EARLY_PRINTK
113 Support for Atheros AR231x and Atheros AR531x based boards
116 bool "Atheros AR71XX/AR724X/AR913X based boards"
117 select ARCH_REQUIRE_GPIOLIB
121 select DMA_NONCOHERENT
126 select SYS_HAS_CPU_MIPS32_R2
127 select SYS_HAS_EARLY_PRINTK
128 select SYS_SUPPORTS_32BIT_KERNEL
129 select SYS_SUPPORTS_BIG_ENDIAN
130 select SYS_SUPPORTS_MIPS16
132 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
135 bool "Broadcom BCM3384 based boards"
137 select NO_EXCEPT_FILL
143 select DMA_NONCOHERENT
145 select SYS_SUPPORTS_32BIT_KERNEL
146 select SYS_SUPPORTS_BIG_ENDIAN
147 select SYS_SUPPORTS_HIGHMEM
148 select SYS_HAS_CPU_BMIPS5000
150 select USB_EHCI_BIG_ENDIAN_DESC
151 select USB_EHCI_BIG_ENDIAN_MMIO
152 select USB_OHCI_BIG_ENDIAN_DESC
153 select USB_OHCI_BIG_ENDIAN_MMIO
155 Support for BCM3384 based boards. BCM3384/BCM33843 is a cable modem
156 chipset with a Linux application processor that is often used to
157 provide Samba services, a CUPS print server, and/or advanced routing
161 bool "Broadcom BCM47XX based boards"
162 select ARCH_WANT_OPTIONAL_GPIOLIB
166 select DMA_NONCOHERENT
169 select SYS_HAS_CPU_MIPS32_R1
170 select NO_EXCEPT_FILL
171 select SYS_SUPPORTS_32BIT_KERNEL
172 select SYS_SUPPORTS_LITTLE_ENDIAN
173 select SYS_SUPPORTS_MIPS16
174 select SYS_HAS_EARLY_PRINTK
175 select USE_GENERIC_EARLY_PRINTK_8250
177 select LEDS_GPIO_REGISTER
179 Support for BCM47XX based boards
182 bool "Broadcom BCM63XX based boards"
187 select DMA_NONCOHERENT
189 select SYS_SUPPORTS_32BIT_KERNEL
190 select SYS_SUPPORTS_BIG_ENDIAN
191 select SYS_HAS_EARLY_PRINTK
193 select ARCH_REQUIRE_GPIOLIB
195 select MIPS_L1_CACHE_SHIFT_4
197 Support for BCM63XX based boards
204 select DMA_NONCOHERENT
210 select PCI_GT64XXX_PCI0
212 select SYS_HAS_CPU_NEVADA
213 select SYS_HAS_EARLY_PRINTK
214 select SYS_SUPPORTS_32BIT_KERNEL
215 select SYS_SUPPORTS_64BIT_KERNEL
216 select SYS_SUPPORTS_LITTLE_ENDIAN
217 select USE_GENERIC_EARLY_PRINTK_8250
219 config MACH_DECSTATION
223 select CEVT_R4K if CPU_R4X00
225 select CSRC_R4K if CPU_R4X00
226 select CPU_DADDI_WORKAROUNDS if 64BIT
227 select CPU_R4000_WORKAROUNDS if 64BIT
228 select CPU_R4400_WORKAROUNDS if 64BIT
229 select DMA_NONCOHERENT
232 select SYS_HAS_CPU_R3000
233 select SYS_HAS_CPU_R4X00
234 select SYS_SUPPORTS_32BIT_KERNEL
235 select SYS_SUPPORTS_64BIT_KERNEL
236 select SYS_SUPPORTS_LITTLE_ENDIAN
237 select SYS_SUPPORTS_128HZ
238 select SYS_SUPPORTS_256HZ
239 select SYS_SUPPORTS_1024HZ
240 select MIPS_L1_CACHE_SHIFT_4
242 This enables support for DEC's MIPS based workstations. For details
243 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
244 DECstation porting pages on <http://decstation.unix-ag.org/>.
246 If you have one of the following DECstation Models you definitely
247 want to choose R4xx0 for the CPU Type:
254 otherwise choose R3000.
257 bool "Jazz family of machines"
260 select ARCH_MAY_HAVE_PC_FDC
263 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
264 select GENERIC_ISA_DMA
265 select HAVE_PCSPKR_PLATFORM
270 select SYS_HAS_CPU_R4X00
271 select SYS_SUPPORTS_32BIT_KERNEL
272 select SYS_SUPPORTS_64BIT_KERNEL
273 select SYS_SUPPORTS_100HZ
275 This a family of machines based on the MIPS R4030 chipset which was
276 used by several vendors to build RISC/os and Windows NT workstations.
277 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
278 Olivetti M700-10 workstations.
281 bool "Ingenic JZ4740 based machines"
282 select SYS_HAS_CPU_MIPS32_R1
283 select SYS_SUPPORTS_32BIT_KERNEL
284 select SYS_SUPPORTS_LITTLE_ENDIAN
285 select SYS_SUPPORTS_ZBOOT_UART16550
286 select DMA_NONCOHERENT
288 select ARCH_REQUIRE_GPIOLIB
289 select SYS_HAS_EARLY_PRINTK
291 select GENERIC_IRQ_CHIP
294 bool "Lantiq based platforms"
295 select DMA_NONCOHERENT
299 select SYS_HAS_CPU_MIPS32_R1
300 select SYS_HAS_CPU_MIPS32_R2
301 select SYS_SUPPORTS_BIG_ENDIAN
302 select SYS_SUPPORTS_32BIT_KERNEL
303 select SYS_SUPPORTS_MIPS16
304 select SYS_SUPPORTS_MULTITHREADING
305 select SYS_HAS_EARLY_PRINTK
306 select ARCH_REQUIRE_GPIOLIB
309 select HAVE_MACH_CLKDEV
313 select PINCTRL_LANTIQ
314 select ARCH_HAS_RESET_CONTROLLER
315 select RESET_CONTROLLER
318 bool "LASAT Networks platforms"
322 select DMA_NONCOHERENT
323 select SYS_HAS_EARLY_PRINTK
326 select PCI_GT64XXX_PCI0
328 select R5000_CPU_SCACHE
329 select SYS_HAS_CPU_R5000
330 select SYS_SUPPORTS_32BIT_KERNEL
331 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
332 select SYS_SUPPORTS_LITTLE_ENDIAN
335 bool "Loongson family of machines"
336 select SYS_SUPPORTS_ZBOOT
338 This enables the support of Loongson family of machines.
340 Loongson is a family of general-purpose MIPS-compatible CPUs.
341 developed at Institute of Computing Technology (ICT),
342 Chinese Academy of Sciences (CAS) in the People's Republic
343 of China. The chief architect is Professor Weiwu Hu.
345 config MACH_LOONGSON1
346 bool "Loongson 1 family of machines"
347 select SYS_SUPPORTS_ZBOOT
349 This enables support for the Loongson 1 based machines.
351 Loongson 1 is a family of 32-bit MIPS-compatible SoCs developed by
352 the ICT (Institute of Computing Technology) and the Chinese Academy
356 bool "MIPS Malta board"
357 select ARCH_MAY_HAVE_PC_FDC
362 select CLKSRC_MIPS_GIC
363 select DMA_MAYBE_COHERENT
364 select GENERIC_ISA_DMA
365 select HAVE_PCSPKR_PLATFORM
372 select MIPS_CPU_SCACHE
373 select MIPS_L1_CACHE_SHIFT_6
374 select PCI_GT64XXX_PCI0
377 select SYS_HAS_CPU_MIPS32_R1
378 select SYS_HAS_CPU_MIPS32_R2
379 select SYS_HAS_CPU_MIPS32_R3_5
380 select SYS_HAS_CPU_MIPS32_R6
381 select SYS_HAS_CPU_MIPS64_R1
382 select SYS_HAS_CPU_MIPS64_R2
383 select SYS_HAS_CPU_MIPS64_R6
384 select SYS_HAS_CPU_NEVADA
385 select SYS_HAS_CPU_RM7000
386 select SYS_SUPPORTS_32BIT_KERNEL
387 select SYS_SUPPORTS_64BIT_KERNEL
388 select SYS_SUPPORTS_BIG_ENDIAN
389 select SYS_SUPPORTS_LITTLE_ENDIAN
390 select SYS_SUPPORTS_MICROMIPS
391 select SYS_SUPPORTS_MIPS_CMP
392 select SYS_SUPPORTS_MIPS_CPS
393 select SYS_SUPPORTS_MIPS16
394 select SYS_SUPPORTS_MULTITHREADING
395 select SYS_SUPPORTS_SMARTMIPS
396 select SYS_SUPPORTS_ZBOOT
398 This enables support for the MIPS Technologies Malta evaluation
402 bool "MIPS SEAD3 board"
408 select CLKSRC_MIPS_GIC
409 select CPU_MIPSR2_IRQ_VI
410 select CPU_MIPSR2_IRQ_EI
411 select DMA_NONCOHERENT
416 select SYS_HAS_CPU_MIPS32_R1
417 select SYS_HAS_CPU_MIPS32_R2
418 select SYS_HAS_CPU_MIPS64_R1
419 select SYS_HAS_EARLY_PRINTK
420 select SYS_SUPPORTS_32BIT_KERNEL
421 select SYS_SUPPORTS_64BIT_KERNEL
422 select SYS_SUPPORTS_BIG_ENDIAN
423 select SYS_SUPPORTS_LITTLE_ENDIAN
424 select SYS_SUPPORTS_SMARTMIPS
425 select SYS_SUPPORTS_MICROMIPS
426 select SYS_SUPPORTS_MIPS16
427 select USB_EHCI_BIG_ENDIAN_DESC
428 select USB_EHCI_BIG_ENDIAN_MMIO
431 This enables support for the MIPS Technologies SEAD3 evaluation
435 bool "NEC EMMA2RH Mark-eins board"
439 This enables support for the NEC Electronics Mark-eins boards.
442 bool "NEC VR4100 series based machines"
445 select SYS_HAS_CPU_VR41XX
446 select SYS_SUPPORTS_MIPS16
447 select ARCH_REQUIRE_GPIOLIB
450 bool "NXP STB220 board"
453 Support for NXP Semiconductors STB220 Development Board.
460 Support for NXP Semiconductors STB225 Development Board.
463 bool "PMC-Sierra MSP chipsets"
466 select DMA_NONCOHERENT
468 select NO_EXCEPT_FILL
470 select SYS_HAS_CPU_MIPS32_R1
471 select SYS_HAS_CPU_MIPS32_R2
472 select SYS_SUPPORTS_32BIT_KERNEL
473 select SYS_SUPPORTS_BIG_ENDIAN
474 select SYS_SUPPORTS_MIPS16
477 select SERIAL_8250_CONSOLE
478 select USB_EHCI_BIG_ENDIAN_MMIO
479 select USB_EHCI_BIG_ENDIAN_DESC
481 This adds support for the PMC-Sierra family of Multi-Service
482 Processor System-On-A-Chips. These parts include a number
483 of integrated peripherals, interfaces and DSPs in addition to
484 a variety of MIPS cores.
487 bool "Ralink based machines"
491 select DMA_NONCOHERENT
494 select SYS_HAS_CPU_MIPS32_R1
495 select SYS_HAS_CPU_MIPS32_R2
496 select SYS_SUPPORTS_32BIT_KERNEL
497 select SYS_SUPPORTS_LITTLE_ENDIAN
498 select SYS_SUPPORTS_MIPS16
499 select SYS_HAS_EARLY_PRINTK
500 select HAVE_MACH_CLKDEV
502 select ARCH_HAS_RESET_CONTROLLER
503 select RESET_CONTROLLER
506 bool "SGI IP22 (Indy/Indigo2)"
512 select DEFAULT_SGI_PARTITION
513 select DMA_NONCOHERENT
517 select IP22_CPU_SCACHE
519 select GENERIC_ISA_DMA_SUPPORT_BROKEN
521 select SGI_HAS_INDYDOG
527 select SYS_HAS_CPU_R4X00
528 select SYS_HAS_CPU_R5000
530 # Disable EARLY_PRINTK for now since it leads to overwritten prom
531 # memory during early boot on some machines.
533 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
534 # for a more details discussion
536 # select SYS_HAS_EARLY_PRINTK
537 select SYS_SUPPORTS_32BIT_KERNEL
538 select SYS_SUPPORTS_64BIT_KERNEL
539 select SYS_SUPPORTS_BIG_ENDIAN
540 select MIPS_L1_CACHE_SHIFT_7
542 This are the SGI Indy, Challenge S and Indigo2, as well as certain
543 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
544 that runs on these, say Y here.
547 bool "SGI IP27 (Origin200/2000)"
551 select DEFAULT_SGI_PARTITION
553 select SYS_HAS_EARLY_PRINTK
555 select NR_CPUS_DEFAULT_64
556 select SYS_HAS_CPU_R10000
557 select SYS_SUPPORTS_64BIT_KERNEL
558 select SYS_SUPPORTS_BIG_ENDIAN
559 select SYS_SUPPORTS_NUMA
560 select SYS_SUPPORTS_SMP
561 select MIPS_L1_CACHE_SHIFT_7
563 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
564 workstations. To compile a Linux kernel that runs on these, say Y
568 bool "SGI IP28 (Indigo2 R10k)"
574 select DEFAULT_SGI_PARTITION
575 select DMA_NONCOHERENT
576 select GENERIC_ISA_DMA_SUPPORT_BROKEN
582 select SGI_HAS_INDYDOG
588 select SYS_HAS_CPU_R10000
590 # Disable EARLY_PRINTK for now since it leads to overwritten prom
591 # memory during early boot on some machines.
593 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
594 # for a more details discussion
596 # select SYS_HAS_EARLY_PRINTK
597 select SYS_SUPPORTS_64BIT_KERNEL
598 select SYS_SUPPORTS_BIG_ENDIAN
599 select MIPS_L1_CACHE_SHIFT_7
601 This is the SGI Indigo2 with R10000 processor. To compile a Linux
602 kernel that runs on these, say Y here.
611 select DMA_NONCOHERENT
614 select R5000_CPU_SCACHE
615 select RM7000_CPU_SCACHE
616 select SYS_HAS_CPU_R5000
617 select SYS_HAS_CPU_R10000 if BROKEN
618 select SYS_HAS_CPU_RM7000
619 select SYS_HAS_CPU_NEVADA
620 select SYS_SUPPORTS_64BIT_KERNEL
621 select SYS_SUPPORTS_BIG_ENDIAN
623 If you want this kernel to run on SGI O2 workstation, say Y here.
626 bool "Sibyte BCM91120C-CRhine"
629 select SIBYTE_BCM1120
631 select SYS_HAS_CPU_SB1
632 select SYS_SUPPORTS_BIG_ENDIAN
633 select SYS_SUPPORTS_LITTLE_ENDIAN
636 bool "Sibyte BCM91120x-Carmel"
639 select SIBYTE_BCM1120
641 select SYS_HAS_CPU_SB1
642 select SYS_SUPPORTS_BIG_ENDIAN
643 select SYS_SUPPORTS_LITTLE_ENDIAN
646 bool "Sibyte BCM91125C-CRhone"
649 select SIBYTE_BCM1125
651 select SYS_HAS_CPU_SB1
652 select SYS_SUPPORTS_BIG_ENDIAN
653 select SYS_SUPPORTS_HIGHMEM
654 select SYS_SUPPORTS_LITTLE_ENDIAN
657 bool "Sibyte BCM91125E-Rhone"
660 select SIBYTE_BCM1125H
662 select SYS_HAS_CPU_SB1
663 select SYS_SUPPORTS_BIG_ENDIAN
664 select SYS_SUPPORTS_LITTLE_ENDIAN
667 bool "Sibyte BCM91250A-SWARM"
670 select HAVE_PATA_PLATFORM
673 select SYS_HAS_CPU_SB1
674 select SYS_SUPPORTS_BIG_ENDIAN
675 select SYS_SUPPORTS_HIGHMEM
676 select SYS_SUPPORTS_LITTLE_ENDIAN
677 select ZONE_DMA32 if 64BIT
679 config SIBYTE_LITTLESUR
680 bool "Sibyte BCM91250C2-LittleSur"
683 select HAVE_PATA_PLATFORM
686 select SYS_HAS_CPU_SB1
687 select SYS_SUPPORTS_BIG_ENDIAN
688 select SYS_SUPPORTS_HIGHMEM
689 select SYS_SUPPORTS_LITTLE_ENDIAN
691 config SIBYTE_SENTOSA
692 bool "Sibyte BCM91250E-Sentosa"
697 select SYS_HAS_CPU_SB1
698 select SYS_SUPPORTS_BIG_ENDIAN
699 select SYS_SUPPORTS_LITTLE_ENDIAN
702 bool "Sibyte BCM91480B-BigSur"
705 select NR_CPUS_DEFAULT_4
706 select SIBYTE_BCM1x80
708 select SYS_HAS_CPU_SB1
709 select SYS_SUPPORTS_BIG_ENDIAN
710 select SYS_SUPPORTS_HIGHMEM
711 select SYS_SUPPORTS_LITTLE_ENDIAN
712 select ZONE_DMA32 if 64BIT
715 bool "SNI RM200/300/400"
716 select FW_ARC if CPU_LITTLE_ENDIAN
717 select FW_ARC32 if CPU_LITTLE_ENDIAN
718 select FW_SNIPROM if CPU_BIG_ENDIAN
719 select ARCH_MAY_HAVE_PC_FDC
723 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
724 select DMA_NONCOHERENT
725 select GENERIC_ISA_DMA
726 select HAVE_PCSPKR_PLATFORM
733 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
734 select SYS_HAS_CPU_R4X00
735 select SYS_HAS_CPU_R5000
736 select SYS_HAS_CPU_R10000
737 select R5000_CPU_SCACHE
738 select SYS_HAS_EARLY_PRINTK
739 select SYS_SUPPORTS_32BIT_KERNEL
740 select SYS_SUPPORTS_64BIT_KERNEL
741 select SYS_SUPPORTS_BIG_ENDIAN
742 select SYS_SUPPORTS_HIGHMEM
743 select SYS_SUPPORTS_LITTLE_ENDIAN
745 The SNI RM200/300/400 are MIPS-based machines manufactured by
746 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
747 Technology and now in turn merged with Fujitsu. Say Y here to
748 support this machine type.
751 bool "Toshiba TX39 series based machines"
754 bool "Toshiba TX49 series based machines"
756 config MIKROTIK_RB532
757 bool "Mikrotik RB532 boards"
760 select DMA_NONCOHERENT
763 select SYS_HAS_CPU_MIPS32_R1
764 select SYS_SUPPORTS_32BIT_KERNEL
765 select SYS_SUPPORTS_LITTLE_ENDIAN
768 select ARCH_REQUIRE_GPIOLIB
769 select MIPS_L1_CACHE_SHIFT_4
771 Support the Mikrotik(tm) RouterBoard 532 series,
772 based on the IDT RC32434 SoC.
774 config CAVIUM_OCTEON_SOC
775 bool "Cavium Networks Octeon SoC based boards"
777 select ARCH_PHYS_ADDR_T_64BIT
779 select SYS_SUPPORTS_64BIT_KERNEL
780 select SYS_SUPPORTS_BIG_ENDIAN
782 select SYS_SUPPORTS_HOTPLUG_CPU
783 select SYS_HAS_EARLY_PRINTK
784 select SYS_HAS_CPU_CAVIUM_OCTEON
789 select ARCH_REQUIRE_GPIOLIB
792 select ARCH_SPARSEMEM_ENABLE
793 select SYS_SUPPORTS_SMP
794 select NR_CPUS_DEFAULT_16
797 This option supports all of the Octeon reference boards from Cavium
798 Networks. It builds a kernel that dynamically determines the Octeon
799 CPU type and supports all known board reference implementations.
800 Some of the supported boards are:
807 Say Y here for most Octeon reference boards.
810 bool "Netlogic XLR/XLS based systems"
813 select SYS_HAS_CPU_XLR
814 select SYS_SUPPORTS_SMP
817 select SYS_SUPPORTS_32BIT_KERNEL
818 select SYS_SUPPORTS_64BIT_KERNEL
819 select ARCH_PHYS_ADDR_T_64BIT
820 select SYS_SUPPORTS_BIG_ENDIAN
821 select SYS_SUPPORTS_HIGHMEM
823 select NR_CPUS_DEFAULT_32
827 select ZONE_DMA32 if 64BIT
829 select SYS_HAS_EARLY_PRINTK
830 select SYS_SUPPORTS_ZBOOT
831 select SYS_SUPPORTS_ZBOOT_UART16550
833 Support for systems based on Netlogic XLR and XLS processors.
834 Say Y here if you have a XLR or XLS based board.
837 bool "Netlogic XLP based systems"
840 select SYS_HAS_CPU_XLP
841 select SYS_SUPPORTS_SMP
843 select SYS_SUPPORTS_32BIT_KERNEL
844 select SYS_SUPPORTS_64BIT_KERNEL
845 select ARCH_PHYS_ADDR_T_64BIT
846 select SYS_SUPPORTS_BIG_ENDIAN
847 select SYS_SUPPORTS_LITTLE_ENDIAN
848 select SYS_SUPPORTS_HIGHMEM
850 select NR_CPUS_DEFAULT_32
854 select ZONE_DMA32 if 64BIT
856 select SYS_HAS_EARLY_PRINTK
858 select SYS_SUPPORTS_ZBOOT
859 select SYS_SUPPORTS_ZBOOT_UART16550
861 This board is based on Netlogic XLP Processor.
862 Say Y here if you have a XLP based board.
865 bool "Para-Virtualized guest system"
869 select SYS_SUPPORTS_64BIT_KERNEL
870 select SYS_SUPPORTS_32BIT_KERNEL
871 select SYS_SUPPORTS_BIG_ENDIAN
872 select SYS_SUPPORTS_SMP
873 select NR_CPUS_DEFAULT_4
874 select SYS_HAS_EARLY_PRINTK
875 select SYS_HAS_CPU_MIPS32_R2
876 select SYS_HAS_CPU_MIPS64_R2
877 select SYS_HAS_CPU_CAVIUM_OCTEON
881 This option supports guest running under ????
885 source "arch/mips/alchemy/Kconfig"
886 source "arch/mips/ath25/Kconfig"
887 source "arch/mips/ath79/Kconfig"
888 source "arch/mips/bcm47xx/Kconfig"
889 source "arch/mips/bcm63xx/Kconfig"
890 source "arch/mips/jazz/Kconfig"
891 source "arch/mips/jz4740/Kconfig"
892 source "arch/mips/lantiq/Kconfig"
893 source "arch/mips/lasat/Kconfig"
894 source "arch/mips/pmcs-msp71xx/Kconfig"
895 source "arch/mips/ralink/Kconfig"
896 source "arch/mips/sgi-ip27/Kconfig"
897 source "arch/mips/sibyte/Kconfig"
898 source "arch/mips/txx9/Kconfig"
899 source "arch/mips/vr41xx/Kconfig"
900 source "arch/mips/cavium-octeon/Kconfig"
901 source "arch/mips/loongson/Kconfig"
902 source "arch/mips/loongson1/Kconfig"
903 source "arch/mips/netlogic/Kconfig"
904 source "arch/mips/paravirt/Kconfig"
908 config RWSEM_GENERIC_SPINLOCK
912 config RWSEM_XCHGADD_ALGORITHM
915 config ARCH_HAS_ILOG2_U32
919 config ARCH_HAS_ILOG2_U64
923 config GENERIC_HWEIGHT
927 config GENERIC_CALIBRATE_DELAY
931 config SCHED_OMIT_FRAME_POINTER
936 # Select some configuration options automatically based on user selections.
941 config ARCH_MAY_HAVE_PC_FDC
978 select ARCH_REQUIRE_GPIOLIB
984 config ARCH_DMA_ADDR_T_64BIT
985 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
987 config DMA_MAYBE_COHERENT
988 select DMA_NONCOHERENT
994 config DMA_NONCOHERENT
996 select NEED_DMA_MAP_STATE
998 config NEED_DMA_MAP_STATE
1001 config SYS_HAS_EARLY_PRINTK
1005 bool "Support for hot-pluggable CPUs"
1006 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
1008 Say Y here to allow turning CPUs off and on. CPUs can be
1009 controlled through /sys/devices/system/cpu.
1010 (Note: power management support will enable this option
1011 automatically on SMP systems. )
1012 Say N if you want to disable CPU hotplug.
1014 config SYS_SUPPORTS_HOTPLUG_CPU
1021 config MIPS_BONITO64
1036 config NO_IOPORT_MAP
1042 config GENERIC_ISA_DMA
1044 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1047 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1049 select GENERIC_ISA_DMA
1054 config HOLES_IN_ZONE
1058 # Endianness selection. Sufficiently obscure so many users don't know what to
1059 # answer,so we try hard to limit the available choices. Also the use of a
1060 # choice statement should be more obvious to the user.
1063 prompt "Endianness selection"
1065 Some MIPS machines can be configured for either little or big endian
1066 byte order. These modes require different kernels and a different
1067 Linux distribution. In general there is one preferred byteorder for a
1068 particular system but some systems are just as commonly used in the
1069 one or the other endianness.
1071 config CPU_BIG_ENDIAN
1073 depends on SYS_SUPPORTS_BIG_ENDIAN
1075 config CPU_LITTLE_ENDIAN
1076 bool "Little endian"
1077 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1084 config SYS_SUPPORTS_APM_EMULATION
1087 config SYS_SUPPORTS_BIG_ENDIAN
1090 config SYS_SUPPORTS_LITTLE_ENDIAN
1093 config SYS_SUPPORTS_HUGETLBFS
1095 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1098 config MIPS_HUGE_TLB_SUPPORT
1099 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1120 config PCI_GT64XXX_PCI0
1123 config NO_EXCEPT_FILL
1130 select DMA_NONCOHERENT
1132 select SWAP_IO_SPACE
1133 select SYS_HAS_CPU_R5500
1134 select SYS_SUPPORTS_32BIT_KERNEL
1135 select SYS_SUPPORTS_64BIT_KERNEL
1136 select SYS_SUPPORTS_BIG_ENDIAN
1143 select DMA_NONCOHERENT
1144 select SYS_HAS_CPU_MIPS32_R2
1145 select SYS_SUPPORTS_32BIT_KERNEL
1146 select SYS_SUPPORTS_LITTLE_ENDIAN
1147 select SYS_SUPPORTS_BIG_ENDIAN
1148 select SYS_SUPPORTS_MIPS16
1149 select CPU_MIPSR2_IRQ_VI
1158 config SWAP_IO_SPACE
1161 config SGI_HAS_INDYDOG
1173 config SGI_HAS_ZILOG
1176 config SGI_HAS_I8042
1179 config DEFAULT_SGI_PARTITION
1191 config MIPS_L1_CACHE_SHIFT_4
1194 config MIPS_L1_CACHE_SHIFT_5
1197 config MIPS_L1_CACHE_SHIFT_6
1200 config MIPS_L1_CACHE_SHIFT_7
1203 config MIPS_L1_CACHE_SHIFT
1205 default "4" if MIPS_L1_CACHE_SHIFT_4
1206 default "5" if MIPS_L1_CACHE_SHIFT_5
1207 default "6" if MIPS_L1_CACHE_SHIFT_6
1208 default "7" if MIPS_L1_CACHE_SHIFT_7
1211 config HAVE_STD_PC_SERIAL_PORT
1215 bool "ARC console support"
1216 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1220 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1225 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1234 menu "CPU selection"
1240 config CPU_LOONGSON3
1241 bool "Loongson 3 CPU"
1242 depends on SYS_HAS_CPU_LOONGSON3
1243 select CPU_SUPPORTS_64BIT_KERNEL
1244 select CPU_SUPPORTS_HIGHMEM
1245 select CPU_SUPPORTS_HUGEPAGES
1246 select WEAK_ORDERING
1247 select WEAK_REORDERING_BEYOND_LLSC
1249 The Loongson 3 processor implements the MIPS64R2 instruction
1250 set with many extensions.
1252 config CPU_LOONGSON2E
1254 depends on SYS_HAS_CPU_LOONGSON2E
1255 select CPU_LOONGSON2
1257 The Loongson 2E processor implements the MIPS III instruction set
1258 with many extensions.
1260 It has an internal FPGA northbridge, which is compatible to
1263 config CPU_LOONGSON2F
1265 depends on SYS_HAS_CPU_LOONGSON2F
1266 select CPU_LOONGSON2
1267 select ARCH_REQUIRE_GPIOLIB
1269 The Loongson 2F processor implements the MIPS III instruction set
1270 with many extensions.
1272 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1273 have a similar programming interface with FPGA northbridge used in
1276 config CPU_LOONGSON1B
1278 depends on SYS_HAS_CPU_LOONGSON1B
1279 select CPU_LOONGSON1
1281 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1282 release 2 instruction set.
1284 config CPU_MIPS32_R1
1285 bool "MIPS32 Release 1"
1286 depends on SYS_HAS_CPU_MIPS32_R1
1287 select CPU_HAS_PREFETCH
1288 select CPU_SUPPORTS_32BIT_KERNEL
1289 select CPU_SUPPORTS_HIGHMEM
1291 Choose this option to build a kernel for release 1 or later of the
1292 MIPS32 architecture. Most modern embedded systems with a 32-bit
1293 MIPS processor are based on a MIPS32 processor. If you know the
1294 specific type of processor in your system, choose those that one
1295 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1296 Release 2 of the MIPS32 architecture is available since several
1297 years so chances are you even have a MIPS32 Release 2 processor
1298 in which case you should choose CPU_MIPS32_R2 instead for better
1301 config CPU_MIPS32_R2
1302 bool "MIPS32 Release 2"
1303 depends on SYS_HAS_CPU_MIPS32_R2
1304 select CPU_HAS_PREFETCH
1305 select CPU_SUPPORTS_32BIT_KERNEL
1306 select CPU_SUPPORTS_HIGHMEM
1307 select CPU_SUPPORTS_MSA
1310 Choose this option to build a kernel for release 2 or later of the
1311 MIPS32 architecture. Most modern embedded systems with a 32-bit
1312 MIPS processor are based on a MIPS32 processor. If you know the
1313 specific type of processor in your system, choose those that one
1314 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1316 config CPU_MIPS32_R6
1317 bool "MIPS32 Release 6 (EXPERIMENTAL)"
1318 depends on SYS_HAS_CPU_MIPS32_R6
1319 select CPU_HAS_PREFETCH
1320 select CPU_SUPPORTS_32BIT_KERNEL
1321 select CPU_SUPPORTS_HIGHMEM
1322 select CPU_SUPPORTS_MSA
1325 select MIPS_O32_FP64_SUPPORT
1327 Choose this option to build a kernel for release 6 or later of the
1328 MIPS32 architecture. New MIPS processors, starting with the Warrior
1329 family, are based on a MIPS32r6 processor. If you own an older
1330 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1332 config CPU_MIPS64_R1
1333 bool "MIPS64 Release 1"
1334 depends on SYS_HAS_CPU_MIPS64_R1
1335 select CPU_HAS_PREFETCH
1336 select CPU_SUPPORTS_32BIT_KERNEL
1337 select CPU_SUPPORTS_64BIT_KERNEL
1338 select CPU_SUPPORTS_HIGHMEM
1339 select CPU_SUPPORTS_HUGEPAGES
1341 Choose this option to build a kernel for release 1 or later of the
1342 MIPS64 architecture. Many modern embedded systems with a 64-bit
1343 MIPS processor are based on a MIPS64 processor. If you know the
1344 specific type of processor in your system, choose those that one
1345 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1346 Release 2 of the MIPS64 architecture is available since several
1347 years so chances are you even have a MIPS64 Release 2 processor
1348 in which case you should choose CPU_MIPS64_R2 instead for better
1351 config CPU_MIPS64_R2
1352 bool "MIPS64 Release 2"
1353 depends on SYS_HAS_CPU_MIPS64_R2
1354 select CPU_HAS_PREFETCH
1355 select CPU_SUPPORTS_32BIT_KERNEL
1356 select CPU_SUPPORTS_64BIT_KERNEL
1357 select CPU_SUPPORTS_HIGHMEM
1358 select CPU_SUPPORTS_HUGEPAGES
1359 select CPU_SUPPORTS_MSA
1361 Choose this option to build a kernel for release 2 or later of the
1362 MIPS64 architecture. Many modern embedded systems with a 64-bit
1363 MIPS processor are based on a MIPS64 processor. If you know the
1364 specific type of processor in your system, choose those that one
1365 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1367 config CPU_MIPS64_R6
1368 bool "MIPS64 Release 6 (EXPERIMENTAL)"
1369 depends on SYS_HAS_CPU_MIPS64_R6
1370 select CPU_HAS_PREFETCH
1371 select CPU_SUPPORTS_32BIT_KERNEL
1372 select CPU_SUPPORTS_64BIT_KERNEL
1373 select CPU_SUPPORTS_HIGHMEM
1374 select CPU_SUPPORTS_MSA
1377 Choose this option to build a kernel for release 6 or later of the
1378 MIPS64 architecture. New MIPS processors, starting with the Warrior
1379 family, are based on a MIPS64r6 processor. If you own an older
1380 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1384 depends on SYS_HAS_CPU_R3000
1386 select CPU_SUPPORTS_32BIT_KERNEL
1387 select CPU_SUPPORTS_HIGHMEM
1389 Please make sure to pick the right CPU type. Linux/MIPS is not
1390 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1391 *not* work on R4000 machines and vice versa. However, since most
1392 of the supported machines have an R4000 (or similar) CPU, R4x00
1393 might be a safe bet. If the resulting kernel does not work,
1394 try to recompile with R3000.
1398 depends on SYS_HAS_CPU_TX39XX
1399 select CPU_SUPPORTS_32BIT_KERNEL
1403 depends on SYS_HAS_CPU_VR41XX
1404 select CPU_SUPPORTS_32BIT_KERNEL
1405 select CPU_SUPPORTS_64BIT_KERNEL
1407 The options selects support for the NEC VR4100 series of processors.
1408 Only choose this option if you have one of these processors as a
1409 kernel built with this option will not run on any other type of
1410 processor or vice versa.
1414 depends on SYS_HAS_CPU_R4300
1415 select CPU_SUPPORTS_32BIT_KERNEL
1416 select CPU_SUPPORTS_64BIT_KERNEL
1418 MIPS Technologies R4300-series processors.
1422 depends on SYS_HAS_CPU_R4X00
1423 select CPU_SUPPORTS_32BIT_KERNEL
1424 select CPU_SUPPORTS_64BIT_KERNEL
1425 select CPU_SUPPORTS_HUGEPAGES
1427 MIPS Technologies R4000-series processors other than 4300, including
1428 the R4000, R4400, R4600, and 4700.
1432 depends on SYS_HAS_CPU_TX49XX
1433 select CPU_HAS_PREFETCH
1434 select CPU_SUPPORTS_32BIT_KERNEL
1435 select CPU_SUPPORTS_64BIT_KERNEL
1436 select CPU_SUPPORTS_HUGEPAGES
1440 depends on SYS_HAS_CPU_R5000
1441 select CPU_SUPPORTS_32BIT_KERNEL
1442 select CPU_SUPPORTS_64BIT_KERNEL
1443 select CPU_SUPPORTS_HUGEPAGES
1445 MIPS Technologies R5000-series processors other than the Nevada.
1449 depends on SYS_HAS_CPU_R5432
1450 select CPU_SUPPORTS_32BIT_KERNEL
1451 select CPU_SUPPORTS_64BIT_KERNEL
1452 select CPU_SUPPORTS_HUGEPAGES
1456 depends on SYS_HAS_CPU_R5500
1457 select CPU_SUPPORTS_32BIT_KERNEL
1458 select CPU_SUPPORTS_64BIT_KERNEL
1459 select CPU_SUPPORTS_HUGEPAGES
1461 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1466 depends on SYS_HAS_CPU_R6000
1467 select CPU_SUPPORTS_32BIT_KERNEL
1469 MIPS Technologies R6000 and R6000A series processors. Note these
1470 processors are extremely rare and the support for them is incomplete.
1474 depends on SYS_HAS_CPU_NEVADA
1475 select CPU_SUPPORTS_32BIT_KERNEL
1476 select CPU_SUPPORTS_64BIT_KERNEL
1477 select CPU_SUPPORTS_HUGEPAGES
1479 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1483 depends on SYS_HAS_CPU_R8000
1484 select CPU_HAS_PREFETCH
1485 select CPU_SUPPORTS_64BIT_KERNEL
1487 MIPS Technologies R8000 processors. Note these processors are
1488 uncommon and the support for them is incomplete.
1492 depends on SYS_HAS_CPU_R10000
1493 select CPU_HAS_PREFETCH
1494 select CPU_SUPPORTS_32BIT_KERNEL
1495 select CPU_SUPPORTS_64BIT_KERNEL
1496 select CPU_SUPPORTS_HIGHMEM
1497 select CPU_SUPPORTS_HUGEPAGES
1499 MIPS Technologies R10000-series processors.
1503 depends on SYS_HAS_CPU_RM7000
1504 select CPU_HAS_PREFETCH
1505 select CPU_SUPPORTS_32BIT_KERNEL
1506 select CPU_SUPPORTS_64BIT_KERNEL
1507 select CPU_SUPPORTS_HIGHMEM
1508 select CPU_SUPPORTS_HUGEPAGES
1512 depends on SYS_HAS_CPU_SB1
1513 select CPU_SUPPORTS_32BIT_KERNEL
1514 select CPU_SUPPORTS_64BIT_KERNEL
1515 select CPU_SUPPORTS_HIGHMEM
1516 select CPU_SUPPORTS_HUGEPAGES
1517 select WEAK_ORDERING
1519 config CPU_CAVIUM_OCTEON
1520 bool "Cavium Octeon processor"
1521 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1522 select CPU_HAS_PREFETCH
1523 select CPU_SUPPORTS_64BIT_KERNEL
1524 select WEAK_ORDERING
1525 select CPU_SUPPORTS_HIGHMEM
1526 select CPU_SUPPORTS_HUGEPAGES
1527 select USB_EHCI_BIG_ENDIAN_MMIO
1528 select MIPS_L1_CACHE_SHIFT_7
1530 The Cavium Octeon processor is a highly integrated chip containing
1531 many ethernet hardware widgets for networking tasks. The processor
1532 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1533 Full details can be found at http://www.caviumnetworks.com.
1536 bool "Broadcom BMIPS"
1537 depends on SYS_HAS_CPU_BMIPS
1539 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1540 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1541 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1542 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1543 select CPU_SUPPORTS_32BIT_KERNEL
1544 select DMA_NONCOHERENT
1546 select SWAP_IO_SPACE
1547 select WEAK_ORDERING
1548 select CPU_SUPPORTS_HIGHMEM
1549 select CPU_HAS_PREFETCH
1551 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1554 bool "Netlogic XLR SoC"
1555 depends on SYS_HAS_CPU_XLR
1556 select CPU_SUPPORTS_32BIT_KERNEL
1557 select CPU_SUPPORTS_64BIT_KERNEL
1558 select CPU_SUPPORTS_HIGHMEM
1559 select CPU_SUPPORTS_HUGEPAGES
1560 select WEAK_ORDERING
1561 select WEAK_REORDERING_BEYOND_LLSC
1563 Netlogic Microsystems XLR/XLS processors.
1566 bool "Netlogic XLP SoC"
1567 depends on SYS_HAS_CPU_XLP
1568 select CPU_SUPPORTS_32BIT_KERNEL
1569 select CPU_SUPPORTS_64BIT_KERNEL
1570 select CPU_SUPPORTS_HIGHMEM
1571 select WEAK_ORDERING
1572 select WEAK_REORDERING_BEYOND_LLSC
1573 select CPU_HAS_PREFETCH
1576 Netlogic Microsystems XLP processors.
1579 config CPU_MIPS32_3_5_FEATURES
1580 bool "MIPS32 Release 3.5 Features"
1581 depends on SYS_HAS_CPU_MIPS32_R3_5
1582 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1584 Choose this option to build a kernel for release 2 or later of the
1585 MIPS32 architecture including features from the 3.5 release such as
1586 support for Enhanced Virtual Addressing (EVA).
1588 config CPU_MIPS32_3_5_EVA
1589 bool "Enhanced Virtual Addressing (EVA)"
1590 depends on CPU_MIPS32_3_5_FEATURES
1594 Choose this option if you want to enable the Enhanced Virtual
1595 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1596 One of its primary benefits is an increase in the maximum size
1597 of lowmem (up to 3GB). If unsure, say 'N' here.
1600 config CPU_NOP_WORKAROUNDS
1603 config CPU_JUMP_WORKAROUNDS
1606 config CPU_LOONGSON2F_WORKAROUNDS
1607 bool "Loongson 2F Workarounds"
1609 select CPU_NOP_WORKAROUNDS
1610 select CPU_JUMP_WORKAROUNDS
1612 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1613 require workarounds. Without workarounds the system may hang
1614 unexpectedly. For more information please refer to the gas
1615 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1617 Loongson 2F03 and later have fixed these issues and no workarounds
1618 are needed. The workarounds have no significant side effect on them
1619 but may decrease the performance of the system so this option should
1620 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1623 If unsure, please say Y.
1624 endif # CPU_LOONGSON2F
1626 config SYS_SUPPORTS_ZBOOT
1628 select HAVE_KERNEL_GZIP
1629 select HAVE_KERNEL_BZIP2
1630 select HAVE_KERNEL_LZ4
1631 select HAVE_KERNEL_LZMA
1632 select HAVE_KERNEL_LZO
1633 select HAVE_KERNEL_XZ
1635 config SYS_SUPPORTS_ZBOOT_UART16550
1637 select SYS_SUPPORTS_ZBOOT
1639 config CPU_LOONGSON2
1641 select CPU_SUPPORTS_32BIT_KERNEL
1642 select CPU_SUPPORTS_64BIT_KERNEL
1643 select CPU_SUPPORTS_HIGHMEM
1644 select CPU_SUPPORTS_HUGEPAGES
1646 config CPU_LOONGSON1
1650 select CPU_HAS_PREFETCH
1651 select CPU_SUPPORTS_32BIT_KERNEL
1652 select CPU_SUPPORTS_HIGHMEM
1653 select CPU_SUPPORTS_CPUFREQ
1655 config CPU_BMIPS32_3300
1656 select SMP_UP if SMP
1659 config CPU_BMIPS4350
1661 select SYS_SUPPORTS_SMP
1662 select SYS_SUPPORTS_HOTPLUG_CPU
1664 config CPU_BMIPS4380
1666 select MIPS_L1_CACHE_SHIFT_6
1667 select SYS_SUPPORTS_SMP
1668 select SYS_SUPPORTS_HOTPLUG_CPU
1670 config CPU_BMIPS5000
1672 select MIPS_CPU_SCACHE
1673 select MIPS_L1_CACHE_SHIFT_7
1674 select SYS_SUPPORTS_SMP
1675 select SYS_SUPPORTS_HOTPLUG_CPU
1677 config SYS_HAS_CPU_LOONGSON3
1679 select CPU_SUPPORTS_CPUFREQ
1681 config SYS_HAS_CPU_LOONGSON2E
1684 config SYS_HAS_CPU_LOONGSON2F
1686 select CPU_SUPPORTS_CPUFREQ
1687 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1688 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1690 config SYS_HAS_CPU_LOONGSON1B
1693 config SYS_HAS_CPU_MIPS32_R1
1696 config SYS_HAS_CPU_MIPS32_R2
1699 config SYS_HAS_CPU_MIPS32_R3_5
1702 config SYS_HAS_CPU_MIPS32_R6
1705 config SYS_HAS_CPU_MIPS64_R1
1708 config SYS_HAS_CPU_MIPS64_R2
1711 config SYS_HAS_CPU_MIPS64_R6
1714 config SYS_HAS_CPU_R3000
1717 config SYS_HAS_CPU_TX39XX
1720 config SYS_HAS_CPU_VR41XX
1723 config SYS_HAS_CPU_R4300
1726 config SYS_HAS_CPU_R4X00
1729 config SYS_HAS_CPU_TX49XX
1732 config SYS_HAS_CPU_R5000
1735 config SYS_HAS_CPU_R5432
1738 config SYS_HAS_CPU_R5500
1741 config SYS_HAS_CPU_R6000
1744 config SYS_HAS_CPU_NEVADA
1747 config SYS_HAS_CPU_R8000
1750 config SYS_HAS_CPU_R10000
1753 config SYS_HAS_CPU_RM7000
1756 config SYS_HAS_CPU_SB1
1759 config SYS_HAS_CPU_CAVIUM_OCTEON
1762 config SYS_HAS_CPU_BMIPS
1765 config SYS_HAS_CPU_BMIPS32_3300
1767 select SYS_HAS_CPU_BMIPS
1769 config SYS_HAS_CPU_BMIPS4350
1771 select SYS_HAS_CPU_BMIPS
1773 config SYS_HAS_CPU_BMIPS4380
1775 select SYS_HAS_CPU_BMIPS
1777 config SYS_HAS_CPU_BMIPS5000
1779 select SYS_HAS_CPU_BMIPS
1781 config SYS_HAS_CPU_XLR
1784 config SYS_HAS_CPU_XLP
1787 config MIPS_MALTA_PM
1788 depends on MIPS_MALTA
1794 # CPU may reorder R->R, R->W, W->R, W->W
1795 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1797 config WEAK_ORDERING
1801 # CPU may reorder reads and writes beyond LL/SC
1802 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1804 config WEAK_REORDERING_BEYOND_LLSC
1809 # These two indicate any level of the MIPS32 and MIPS64 architecture
1813 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1817 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1820 # These two indicate the revision of the architecture, either Release 1 or Release 2
1824 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1828 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1833 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1839 config SYS_SUPPORTS_32BIT_KERNEL
1841 config SYS_SUPPORTS_64BIT_KERNEL
1843 config CPU_SUPPORTS_32BIT_KERNEL
1845 config CPU_SUPPORTS_64BIT_KERNEL
1847 config CPU_SUPPORTS_CPUFREQ
1849 config CPU_SUPPORTS_ADDRWINCFG
1851 config CPU_SUPPORTS_HUGEPAGES
1853 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1855 config MIPS_PGD_C0_CONTEXT
1857 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1860 # Set to y for ptrace access to watch registers.
1862 config HARDWARE_WATCHPOINTS
1864 default y if CPU_MIPSR1 || CPU_MIPSR2
1869 prompt "Kernel code model"
1871 You should only select this option if you have a workload that
1872 actually benefits from 64-bit processing or if your machine has
1873 large memory. You will only be presented a single option in this
1874 menu if your system does not support both 32-bit and 64-bit kernels.
1877 bool "32-bit kernel"
1878 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1881 Select this option if you want to build a 32-bit kernel.
1883 bool "64-bit kernel"
1884 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1886 Select this option if you want to build a 64-bit kernel.
1891 bool "KVM Guest Kernel"
1892 depends on BROKEN_ON_SMP
1894 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1896 config KVM_GUEST_TIMER_FREQ
1897 int "Count/Compare Timer Frequency (MHz)"
1898 depends on KVM_GUEST
1901 Set this to non-zero if building a guest kernel for KVM to skip RTC
1902 emulation when determining guest CPU Frequency. Instead, the guest's
1903 timer frequency is specified directly.
1906 prompt "Kernel page size"
1907 default PAGE_SIZE_4KB
1909 config PAGE_SIZE_4KB
1911 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
1913 This option select the standard 4kB Linux page size. On some
1914 R3000-family processors this is the only available page size. Using
1915 4kB page size will minimize memory consumption and is therefore
1916 recommended for low memory systems.
1918 config PAGE_SIZE_8KB
1920 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1922 Using 8kB page size will result in higher performance kernel at
1923 the price of higher memory consumption. This option is available
1924 only on R8000 and cnMIPS processors. Note that you will need a
1925 suitable Linux distribution to support this.
1927 config PAGE_SIZE_16KB
1929 depends on !CPU_R3000 && !CPU_TX39XX
1931 Using 16kB page size will result in higher performance kernel at
1932 the price of higher memory consumption. This option is available on
1933 all non-R3000 family processors. Note that you will need a suitable
1934 Linux distribution to support this.
1936 config PAGE_SIZE_32KB
1938 depends on CPU_CAVIUM_OCTEON
1940 Using 32kB page size will result in higher performance kernel at
1941 the price of higher memory consumption. This option is available
1942 only on cnMIPS cores. Note that you will need a suitable Linux
1943 distribution to support this.
1945 config PAGE_SIZE_64KB
1947 depends on !CPU_R3000 && !CPU_TX39XX
1949 Using 64kB page size will result in higher performance kernel at
1950 the price of higher memory consumption. This option is available on
1951 all non-R3000 family processor. Not that at the time of this
1952 writing this option is still high experimental.
1956 config FORCE_MAX_ZONEORDER
1957 int "Maximum zone order"
1958 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
1959 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
1960 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
1961 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
1962 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
1963 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
1967 The kernel memory allocator divides physically contiguous memory
1968 blocks into "zones", where each zone is a power of two number of
1969 pages. This option selects the largest power of two that the kernel
1970 keeps in the memory allocator. If you need to allocate very large
1971 blocks of physically contiguous memory, then you may need to
1972 increase this value.
1974 This config option is actually maximum order plus one. For example,
1975 a value of 11 means that the largest free memory block is 2^10 pages.
1977 The page size is not necessarily 4KB. Keep this in mind
1978 when choosing a value for this option.
1983 config IP22_CPU_SCACHE
1988 # Support for a MIPS32 / MIPS64 style S-caches
1990 config MIPS_CPU_SCACHE
1994 config R5000_CPU_SCACHE
1998 config RM7000_CPU_SCACHE
2002 config SIBYTE_DMA_PAGEOPS
2003 bool "Use DMA to clear/copy pages"
2006 Instead of using the CPU to zero and copy pages, use a Data Mover
2007 channel. These DMA channels are otherwise unused by the standard
2008 SiByte Linux port. Seems to give a small performance benefit.
2010 config CPU_HAS_PREFETCH
2013 config CPU_GENERIC_DUMP_TLB
2015 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2019 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2021 config CPU_R4K_CACHE_TLB
2023 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2026 bool "MIPS MT SMP support (1 TC on each available VPE)"
2027 depends on SYS_SUPPORTS_MULTITHREADING
2028 select CPU_MIPSR2_IRQ_VI
2029 select CPU_MIPSR2_IRQ_EI
2035 select SYS_SUPPORTS_SMP
2036 select SYS_SUPPORTS_SCHED_SMT
2037 select MIPS_PERF_SHARED_TC_COUNTERS
2039 This is a kernel model which is known as SMVP. This is supported
2040 on cores with the MT ASE and uses the available VPEs to implement
2041 virtual processors which supports SMP. This is equivalent to the
2042 Intel Hyperthreading feature. For further information go to
2043 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2049 bool "SMT (multithreading) scheduler support"
2050 depends on SYS_SUPPORTS_SCHED_SMT
2053 SMT scheduler support improves the CPU scheduler's decision making
2054 when dealing with MIPS MT enabled cores at a cost of slightly
2055 increased overhead in some places. If unsure say N here.
2057 config SYS_SUPPORTS_SCHED_SMT
2060 config SYS_SUPPORTS_MULTITHREADING
2063 config MIPS_MT_FPAFF
2064 bool "Dynamic FPU affinity for FP-intensive threads"
2066 depends on MIPS_MT_SMP
2068 config MIPSR2_TO_R6_EMULATOR
2069 bool "MIPS R2-to-R6 emulator"
2070 depends on CPU_MIPSR6 && !SMP
2073 Choose this option if you want to run non-R6 MIPS userland code.
2074 Even if you say 'Y' here, the emulator will still be disabled by
2075 default. You can enable it using the 'mipsr2emul' kernel option.
2076 The only reason this is a build-time option is to save ~14K from the
2078 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2079 depends on SMP && CPU_MIPSR6
2081 config MIPS_VPE_LOADER
2082 bool "VPE loader support."
2083 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2084 select CPU_MIPSR2_IRQ_VI
2085 select CPU_MIPSR2_IRQ_EI
2088 Includes a loader for loading an elf relocatable object
2089 onto another VPE and running it.
2091 config MIPS_VPE_LOADER_CMP
2094 depends on MIPS_VPE_LOADER && MIPS_CMP
2096 config MIPS_VPE_LOADER_MT
2099 depends on MIPS_VPE_LOADER && !MIPS_CMP
2101 config MIPS_VPE_LOADER_TOM
2102 bool "Load VPE program into memory hidden from linux"
2103 depends on MIPS_VPE_LOADER
2106 The loader can use memory that is present but has been hidden from
2107 Linux using the kernel command line option "mem=xxMB". It's up to
2108 you to ensure the amount you put in the option and the space your
2109 program requires is less or equal to the amount physically present.
2111 config MIPS_VPE_APSP_API
2112 bool "Enable support for AP/SP API (RTLX)"
2113 depends on MIPS_VPE_LOADER
2116 config MIPS_VPE_APSP_API_CMP
2119 depends on MIPS_VPE_APSP_API && MIPS_CMP
2121 config MIPS_VPE_APSP_API_MT
2124 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2127 bool "MIPS CMP framework support (DEPRECATED)"
2128 depends on SYS_SUPPORTS_MIPS_CMP
2132 select SYS_SUPPORTS_SMP
2133 select WEAK_ORDERING
2136 Select this if you are using a bootloader which implements the "CMP
2137 framework" protocol (ie. YAMON) and want your kernel to make use of
2138 its ability to start secondary CPUs.
2140 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2144 bool "MIPS Coherent Processing System support"
2145 depends on SYS_SUPPORTS_MIPS_CPS
2148 select MIPS_CPS_PM if HOTPLUG_CPU
2151 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2152 select SYS_SUPPORTS_HOTPLUG_CPU
2153 select SYS_SUPPORTS_SMP
2154 select WEAK_ORDERING
2156 Select this if you wish to run an SMP kernel across multiple cores
2157 within a MIPS Coherent Processing System. When this option is
2158 enabled the kernel will probe for other cores and boot them with
2159 no external assistance. It is safe to enable this when hardware
2160 support is unavailable.
2176 config SB1_PASS_1_WORKAROUNDS
2178 depends on CPU_SB1_PASS_1
2181 config SB1_PASS_2_WORKAROUNDS
2183 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2186 config SB1_PASS_2_1_WORKAROUNDS
2188 depends on CPU_SB1 && CPU_SB1_PASS_2
2192 config ARCH_PHYS_ADDR_T_64BIT
2196 prompt "SmartMIPS or microMIPS ASE support"
2198 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2201 Select this if you want neither microMIPS nor SmartMIPS support
2203 config CPU_HAS_SMARTMIPS
2204 depends on SYS_SUPPORTS_SMARTMIPS
2207 SmartMIPS is a extension of the MIPS32 architecture aimed at
2208 increased security at both hardware and software level for
2209 smartcards. Enabling this option will allow proper use of the
2210 SmartMIPS instructions by Linux applications. However a kernel with
2211 this option will not work on a MIPS core without SmartMIPS core. If
2212 you don't know you probably don't have SmartMIPS and should say N
2215 config CPU_MICROMIPS
2216 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2219 When this option is enabled the kernel will be built using the
2225 bool "Support for the MIPS SIMD Architecture (EXPERIMENTAL)"
2226 depends on CPU_SUPPORTS_MSA
2227 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2229 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2230 and a set of SIMD instructions to operate on them. When this option
2231 is enabled the kernel will support allocating & switching MSA
2232 vector register contexts. If you know that your kernel will only be
2233 running on CPUs which do not support MSA or that your userland will
2234 not be making use of it then you may wish to say N here to reduce
2235 the size & complexity of your kernel.
2246 # Vectored interrupt mode is an R2 feature
2248 config CPU_MIPSR2_IRQ_VI
2252 # Extended interrupt mode is an R2 feature
2254 config CPU_MIPSR2_IRQ_EI
2259 depends on !CPU_R3000
2265 config CPU_DADDI_WORKAROUNDS
2268 config CPU_R4000_WORKAROUNDS
2270 select CPU_R4400_WORKAROUNDS
2272 config CPU_R4400_WORKAROUNDS
2276 # - Highmem only makes sense for the 32-bit kernel.
2277 # - The current highmem code will only work properly on physically indexed
2278 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2279 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2280 # moment we protect the user and offer the highmem option only on machines
2281 # where it's known to be safe. This will not offer highmem on a few systems
2282 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2283 # indexed CPUs but we're playing safe.
2284 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2285 # know they might have memory configurations that could make use of highmem
2289 bool "High Memory Support"
2290 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2292 config CPU_SUPPORTS_HIGHMEM
2295 config SYS_SUPPORTS_HIGHMEM
2298 config SYS_SUPPORTS_SMARTMIPS
2301 config SYS_SUPPORTS_MICROMIPS
2304 config SYS_SUPPORTS_MIPS16
2307 This option must be set if a kernel might be executed on a MIPS16-
2308 enabled CPU even if MIPS16 is not actually being used. In other
2309 words, it makes the kernel MIPS16-tolerant.
2311 config CPU_SUPPORTS_MSA
2314 config ARCH_FLATMEM_ENABLE
2316 depends on !NUMA && !CPU_LOONGSON2
2318 config ARCH_DISCONTIGMEM_ENABLE
2320 default y if SGI_IP27
2322 Say Y to support efficient handling of discontiguous physical memory,
2323 for architectures which are either NUMA (Non-Uniform Memory Access)
2324 or have huge holes in the physical address space for other reasons.
2325 See <file:Documentation/vm/numa> for more.
2327 config ARCH_SPARSEMEM_ENABLE
2329 select SPARSEMEM_STATIC
2333 depends on SYS_SUPPORTS_NUMA
2335 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2336 Access). This option improves performance on systems with more
2337 than two nodes; on two node systems it is generally better to
2338 leave it disabled; on single node systems disable this option
2341 config SYS_SUPPORTS_NUMA
2347 depends on NEED_MULTIPLE_NODES
2349 config HW_PERF_EVENTS
2350 bool "Enable hardware performance counter support for perf events"
2351 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2354 Enable hardware performance counter support for perf events. If
2355 disabled, perf events will use software events only.
2360 bool "Multi-Processing support"
2361 depends on SYS_SUPPORTS_SMP
2363 This enables support for systems with more than one CPU. If you have
2364 a system with only one CPU, say N. If you have a system with more
2365 than one CPU, say Y.
2367 If you say N here, the kernel will run on uni- and multiprocessor
2368 machines, but will use only one CPU of a multiprocessor machine. If
2369 you say Y here, the kernel will run on many, but not all,
2370 uniprocessor machines. On a uniprocessor machine, the kernel
2371 will run faster if you say N here.
2373 People using multiprocessor machines who say Y here should also say
2374 Y to "Enhanced Real Time Clock Support", below.
2376 See also the SMP-HOWTO available at
2377 <http://www.tldp.org/docs.html#howto>.
2379 If you don't know what to do here, say N.
2384 config SYS_SUPPORTS_MIPS_CMP
2387 config SYS_SUPPORTS_MIPS_CPS
2390 config SYS_SUPPORTS_SMP
2393 config NR_CPUS_DEFAULT_4
2396 config NR_CPUS_DEFAULT_8
2399 config NR_CPUS_DEFAULT_16
2402 config NR_CPUS_DEFAULT_32
2405 config NR_CPUS_DEFAULT_64
2409 int "Maximum number of CPUs (2-256)"
2412 default "4" if NR_CPUS_DEFAULT_4
2413 default "8" if NR_CPUS_DEFAULT_8
2414 default "16" if NR_CPUS_DEFAULT_16
2415 default "32" if NR_CPUS_DEFAULT_32
2416 default "64" if NR_CPUS_DEFAULT_64
2418 This allows you to specify the maximum number of CPUs which this
2419 kernel will support. The maximum supported value is 32 for 32-bit
2420 kernel and 64 for 64-bit kernels; the minimum value which makes
2421 sense is 1 for Qemu (useful only for kernel debugging purposes)
2422 and 2 for all others.
2424 This is purely to save memory - each supported CPU adds
2425 approximately eight kilobytes to the kernel image. For best
2426 performance should round up your number of processors to the next
2429 config MIPS_PERF_SHARED_TC_COUNTERS
2433 # Timer Interrupt Frequency Configuration
2437 prompt "Timer frequency"
2440 Allows the configuration of the timer frequency.
2443 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2446 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2449 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2452 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2455 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2458 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2461 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2465 config SYS_SUPPORTS_48HZ
2468 config SYS_SUPPORTS_100HZ
2471 config SYS_SUPPORTS_128HZ
2474 config SYS_SUPPORTS_250HZ
2477 config SYS_SUPPORTS_256HZ
2480 config SYS_SUPPORTS_1000HZ
2483 config SYS_SUPPORTS_1024HZ
2486 config SYS_SUPPORTS_ARBIT_HZ
2488 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2489 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2490 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2491 !SYS_SUPPORTS_1024HZ
2496 default 100 if HZ_100
2497 default 128 if HZ_128
2498 default 250 if HZ_250
2499 default 256 if HZ_256
2500 default 1000 if HZ_1000
2501 default 1024 if HZ_1024
2503 source "kernel/Kconfig.preempt"
2506 bool "Kexec system call"
2508 kexec is a system call that implements the ability to shutdown your
2509 current kernel, and to start another kernel. It is like a reboot
2510 but it is independent of the system firmware. And like a reboot
2511 you can start any kernel with it, not just Linux.
2513 The name comes from the similarity to the exec system call.
2515 It is an ongoing process to be certain the hardware in a machine
2516 is properly shutdown, so do not be surprised if this code does not
2517 initially work for you. As of this writing the exact hardware
2518 interface is strongly in flux, so no good recommendation can be
2522 bool "Kernel crash dumps"
2524 Generate crash dump after being started by kexec.
2525 This should be normally only set in special crash dump kernels
2526 which are loaded in the main kernel with kexec-tools into
2527 a specially reserved region and then later executed after
2528 a crash by kdump/kexec. The crash dump kernel must be compiled
2529 to a memory address not used by the main kernel or firmware using
2532 config PHYSICAL_START
2533 hex "Physical address where the kernel is loaded"
2534 default "0xffffffff84000000" if 64BIT
2535 default "0x84000000" if 32BIT
2536 depends on CRASH_DUMP
2538 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2539 If you plan to use kernel for capturing the crash dump change
2540 this value to start of the reserved region (the "X" value as
2541 specified in the "crashkernel=YM@XM" command line boot parameter
2542 passed to the panic-ed kernel).
2545 bool "Enable seccomp to safely compute untrusted bytecode"
2549 This kernel feature is useful for number crunching applications
2550 that may need to compute untrusted bytecode during their
2551 execution. By using pipes or other transports made available to
2552 the process as file descriptors supporting the read/write
2553 syscalls, it's possible to isolate those applications in
2554 their own address space using seccomp. Once seccomp is
2555 enabled via /proc/<pid>/seccomp, it cannot be disabled
2556 and the task is only allowed to execute a few safe syscalls
2557 defined by each seccomp mode.
2559 If unsure, say Y. Only embedded should say N here.
2561 config MIPS_O32_FP64_SUPPORT
2562 bool "Support for O32 binaries using 64-bit FP (EXPERIMENTAL)"
2563 depends on 32BIT || MIPS32_O32
2565 When this is enabled, the kernel will support use of 64-bit floating
2566 point registers with binaries using the O32 ABI along with the
2567 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2568 32-bit MIPS systems this support is at the cost of increasing the
2569 size and complexity of the compiled FPU emulator. Thus if you are
2570 running a MIPS32 system and know that none of your userland binaries
2571 will require 64-bit floating point, you may wish to reduce the size
2572 of your kernel & potentially improve FP emulation performance by
2575 Although binutils currently supports use of this flag the details
2576 concerning its effect upon the O32 ABI in userland are still being
2577 worked on. In order to avoid userland becoming dependant upon current
2578 behaviour before the details have been finalised, this option should
2579 be considered experimental and only enabled by those working upon
2587 select OF_EARLY_FLATTREE
2595 config LOCKDEP_SUPPORT
2599 config STACKTRACE_SUPPORT
2603 source "init/Kconfig"
2605 source "kernel/Kconfig.freezer"
2607 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2615 bool "Support for PCI controller"
2616 depends on HW_HAS_PCI
2618 select NO_GENERIC_PCI_IOPORT_MAP
2620 Find out whether you have a PCI motherboard. PCI is the name of a
2621 bus system, i.e. the way the CPU talks to the other stuff inside
2622 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2626 bool "Support for HT-linked PCI"
2628 depends on CPU_LOONGSON3
2632 Loongson family machines use Hyper-Transport bus for inter-core
2633 connection and device connection. The PCI bus is a subordinate
2634 linked at HT. Choose Y for Loongson-3 based machines.
2639 source "drivers/pci/Kconfig"
2641 source "drivers/pci/pcie/Kconfig"
2644 # ISA support is now enabled via select. Too many systems still have the one
2645 # or other ISA chip on the board that users don't know about so don't expect
2646 # users to choose the right thing ...
2653 depends on HW_HAS_EISA
2655 select GENERIC_ISA_DMA
2657 The Extended Industry Standard Architecture (EISA) bus was
2658 developed as an open alternative to the IBM MicroChannel bus.
2660 The EISA bus provided some of the features of the IBM MicroChannel
2661 bus while maintaining backward compatibility with cards made for
2662 the older ISA bus. The EISA bus saw limited use between 1988 and
2663 1995 when it was made obsolete by the PCI bus.
2665 Say Y here if you are building a kernel for an EISA-based machine.
2669 source "drivers/eisa/Kconfig"
2672 bool "TURBOchannel support"
2673 depends on MACH_DECSTATION
2675 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2676 processors. TURBOchannel programming specifications are available
2678 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2680 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2681 Linux driver support status is documented at:
2682 <http://www.linux-mips.org/wiki/DECstation>
2692 select MIPS_EXTERNAL_TIMER
2700 source "drivers/pcmcia/Kconfig"
2702 source "drivers/pci/hotplug/Kconfig"
2705 tristate "RapidIO support"
2709 If you say Y here, the kernel will include drivers and
2710 infrastructure code to support RapidIO interconnect devices.
2712 source "drivers/rapidio/Kconfig"
2716 menu "Executable file formats"
2718 source "fs/Kconfig.binfmt"
2723 config MIPS32_COMPAT
2729 config SYSVIPC_COMPAT
2733 bool "Kernel support for o32 binaries"
2735 select ARCH_WANT_OLD_COMPAT_IPC
2737 select MIPS32_COMPAT
2738 select SYSVIPC_COMPAT if SYSVIPC
2740 Select this option if you want to run o32 binaries. These are pure
2741 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2742 existing binaries are in this format.
2747 bool "Kernel support for n32 binaries"
2750 select MIPS32_COMPAT
2751 select SYSVIPC_COMPAT if SYSVIPC
2753 Select this option if you want to run n32 binaries. These are
2754 64-bit binaries using 32-bit quantities for addressing and certain
2755 data that would normally be 64-bit. They are used in special
2762 default y if MIPS32_O32 || MIPS32_N32
2766 menu "Power management options"
2768 config ARCH_HIBERNATION_POSSIBLE
2770 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2772 config ARCH_SUSPEND_POSSIBLE
2774 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2776 source "kernel/power/Kconfig"
2780 config MIPS_EXTERNAL_TIMER
2783 menu "CPU Power Management"
2785 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2786 source "drivers/cpufreq/Kconfig"
2789 source "drivers/cpuidle/Kconfig"
2793 source "net/Kconfig"
2795 source "drivers/Kconfig"
2797 source "drivers/firmware/Kconfig"
2801 source "arch/mips/Kconfig.debug"
2803 source "security/Kconfig"
2805 source "crypto/Kconfig"
2807 source "lib/Kconfig"
2809 source "arch/mips/kvm/Kconfig"