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
1248 select ARCH_REQUIRE_GPIOLIB
1250 The Loongson 3 processor implements the MIPS64R2 instruction
1251 set with many extensions.
1253 config CPU_LOONGSON2E
1255 depends on SYS_HAS_CPU_LOONGSON2E
1256 select CPU_LOONGSON2
1258 The Loongson 2E processor implements the MIPS III instruction set
1259 with many extensions.
1261 It has an internal FPGA northbridge, which is compatible to
1264 config CPU_LOONGSON2F
1266 depends on SYS_HAS_CPU_LOONGSON2F
1267 select CPU_LOONGSON2
1268 select ARCH_REQUIRE_GPIOLIB
1270 The Loongson 2F processor implements the MIPS III instruction set
1271 with many extensions.
1273 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1274 have a similar programming interface with FPGA northbridge used in
1277 config CPU_LOONGSON1B
1279 depends on SYS_HAS_CPU_LOONGSON1B
1280 select CPU_LOONGSON1
1282 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1283 release 2 instruction set.
1285 config CPU_MIPS32_R1
1286 bool "MIPS32 Release 1"
1287 depends on SYS_HAS_CPU_MIPS32_R1
1288 select CPU_HAS_PREFETCH
1289 select CPU_SUPPORTS_32BIT_KERNEL
1290 select CPU_SUPPORTS_HIGHMEM
1292 Choose this option to build a kernel for release 1 or later of the
1293 MIPS32 architecture. Most modern embedded systems with a 32-bit
1294 MIPS processor are based on a MIPS32 processor. If you know the
1295 specific type of processor in your system, choose those that one
1296 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1297 Release 2 of the MIPS32 architecture is available since several
1298 years so chances are you even have a MIPS32 Release 2 processor
1299 in which case you should choose CPU_MIPS32_R2 instead for better
1302 config CPU_MIPS32_R2
1303 bool "MIPS32 Release 2"
1304 depends on SYS_HAS_CPU_MIPS32_R2
1305 select CPU_HAS_PREFETCH
1306 select CPU_SUPPORTS_32BIT_KERNEL
1307 select CPU_SUPPORTS_HIGHMEM
1308 select CPU_SUPPORTS_MSA
1311 Choose this option to build a kernel for release 2 or later of the
1312 MIPS32 architecture. Most modern embedded systems with a 32-bit
1313 MIPS processor are based on a MIPS32 processor. If you know the
1314 specific type of processor in your system, choose those that one
1315 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1317 config CPU_MIPS32_R6
1318 bool "MIPS32 Release 6 (EXPERIMENTAL)"
1319 depends on SYS_HAS_CPU_MIPS32_R6
1320 select CPU_HAS_PREFETCH
1321 select CPU_SUPPORTS_32BIT_KERNEL
1322 select CPU_SUPPORTS_HIGHMEM
1323 select CPU_SUPPORTS_MSA
1326 select MIPS_O32_FP64_SUPPORT
1328 Choose this option to build a kernel for release 6 or later of the
1329 MIPS32 architecture. New MIPS processors, starting with the Warrior
1330 family, are based on a MIPS32r6 processor. If you own an older
1331 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1333 config CPU_MIPS64_R1
1334 bool "MIPS64 Release 1"
1335 depends on SYS_HAS_CPU_MIPS64_R1
1336 select CPU_HAS_PREFETCH
1337 select CPU_SUPPORTS_32BIT_KERNEL
1338 select CPU_SUPPORTS_64BIT_KERNEL
1339 select CPU_SUPPORTS_HIGHMEM
1340 select CPU_SUPPORTS_HUGEPAGES
1342 Choose this option to build a kernel for release 1 or later of the
1343 MIPS64 architecture. Many modern embedded systems with a 64-bit
1344 MIPS processor are based on a MIPS64 processor. If you know the
1345 specific type of processor in your system, choose those that one
1346 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1347 Release 2 of the MIPS64 architecture is available since several
1348 years so chances are you even have a MIPS64 Release 2 processor
1349 in which case you should choose CPU_MIPS64_R2 instead for better
1352 config CPU_MIPS64_R2
1353 bool "MIPS64 Release 2"
1354 depends on SYS_HAS_CPU_MIPS64_R2
1355 select CPU_HAS_PREFETCH
1356 select CPU_SUPPORTS_32BIT_KERNEL
1357 select CPU_SUPPORTS_64BIT_KERNEL
1358 select CPU_SUPPORTS_HIGHMEM
1359 select CPU_SUPPORTS_HUGEPAGES
1360 select CPU_SUPPORTS_MSA
1362 Choose this option to build a kernel for release 2 or later of the
1363 MIPS64 architecture. Many modern embedded systems with a 64-bit
1364 MIPS processor are based on a MIPS64 processor. If you know the
1365 specific type of processor in your system, choose those that one
1366 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1368 config CPU_MIPS64_R6
1369 bool "MIPS64 Release 6 (EXPERIMENTAL)"
1370 depends on SYS_HAS_CPU_MIPS64_R6
1371 select CPU_HAS_PREFETCH
1372 select CPU_SUPPORTS_32BIT_KERNEL
1373 select CPU_SUPPORTS_64BIT_KERNEL
1374 select CPU_SUPPORTS_HIGHMEM
1375 select CPU_SUPPORTS_MSA
1378 Choose this option to build a kernel for release 6 or later of the
1379 MIPS64 architecture. New MIPS processors, starting with the Warrior
1380 family, are based on a MIPS64r6 processor. If you own an older
1381 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1385 depends on SYS_HAS_CPU_R3000
1387 select CPU_SUPPORTS_32BIT_KERNEL
1388 select CPU_SUPPORTS_HIGHMEM
1390 Please make sure to pick the right CPU type. Linux/MIPS is not
1391 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1392 *not* work on R4000 machines and vice versa. However, since most
1393 of the supported machines have an R4000 (or similar) CPU, R4x00
1394 might be a safe bet. If the resulting kernel does not work,
1395 try to recompile with R3000.
1399 depends on SYS_HAS_CPU_TX39XX
1400 select CPU_SUPPORTS_32BIT_KERNEL
1404 depends on SYS_HAS_CPU_VR41XX
1405 select CPU_SUPPORTS_32BIT_KERNEL
1406 select CPU_SUPPORTS_64BIT_KERNEL
1408 The options selects support for the NEC VR4100 series of processors.
1409 Only choose this option if you have one of these processors as a
1410 kernel built with this option will not run on any other type of
1411 processor or vice versa.
1415 depends on SYS_HAS_CPU_R4300
1416 select CPU_SUPPORTS_32BIT_KERNEL
1417 select CPU_SUPPORTS_64BIT_KERNEL
1419 MIPS Technologies R4300-series processors.
1423 depends on SYS_HAS_CPU_R4X00
1424 select CPU_SUPPORTS_32BIT_KERNEL
1425 select CPU_SUPPORTS_64BIT_KERNEL
1426 select CPU_SUPPORTS_HUGEPAGES
1428 MIPS Technologies R4000-series processors other than 4300, including
1429 the R4000, R4400, R4600, and 4700.
1433 depends on SYS_HAS_CPU_TX49XX
1434 select CPU_HAS_PREFETCH
1435 select CPU_SUPPORTS_32BIT_KERNEL
1436 select CPU_SUPPORTS_64BIT_KERNEL
1437 select CPU_SUPPORTS_HUGEPAGES
1441 depends on SYS_HAS_CPU_R5000
1442 select CPU_SUPPORTS_32BIT_KERNEL
1443 select CPU_SUPPORTS_64BIT_KERNEL
1444 select CPU_SUPPORTS_HUGEPAGES
1446 MIPS Technologies R5000-series processors other than the Nevada.
1450 depends on SYS_HAS_CPU_R5432
1451 select CPU_SUPPORTS_32BIT_KERNEL
1452 select CPU_SUPPORTS_64BIT_KERNEL
1453 select CPU_SUPPORTS_HUGEPAGES
1457 depends on SYS_HAS_CPU_R5500
1458 select CPU_SUPPORTS_32BIT_KERNEL
1459 select CPU_SUPPORTS_64BIT_KERNEL
1460 select CPU_SUPPORTS_HUGEPAGES
1462 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1467 depends on SYS_HAS_CPU_R6000
1468 select CPU_SUPPORTS_32BIT_KERNEL
1470 MIPS Technologies R6000 and R6000A series processors. Note these
1471 processors are extremely rare and the support for them is incomplete.
1475 depends on SYS_HAS_CPU_NEVADA
1476 select CPU_SUPPORTS_32BIT_KERNEL
1477 select CPU_SUPPORTS_64BIT_KERNEL
1478 select CPU_SUPPORTS_HUGEPAGES
1480 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1484 depends on SYS_HAS_CPU_R8000
1485 select CPU_HAS_PREFETCH
1486 select CPU_SUPPORTS_64BIT_KERNEL
1488 MIPS Technologies R8000 processors. Note these processors are
1489 uncommon and the support for them is incomplete.
1493 depends on SYS_HAS_CPU_R10000
1494 select CPU_HAS_PREFETCH
1495 select CPU_SUPPORTS_32BIT_KERNEL
1496 select CPU_SUPPORTS_64BIT_KERNEL
1497 select CPU_SUPPORTS_HIGHMEM
1498 select CPU_SUPPORTS_HUGEPAGES
1500 MIPS Technologies R10000-series processors.
1504 depends on SYS_HAS_CPU_RM7000
1505 select CPU_HAS_PREFETCH
1506 select CPU_SUPPORTS_32BIT_KERNEL
1507 select CPU_SUPPORTS_64BIT_KERNEL
1508 select CPU_SUPPORTS_HIGHMEM
1509 select CPU_SUPPORTS_HUGEPAGES
1513 depends on SYS_HAS_CPU_SB1
1514 select CPU_SUPPORTS_32BIT_KERNEL
1515 select CPU_SUPPORTS_64BIT_KERNEL
1516 select CPU_SUPPORTS_HIGHMEM
1517 select CPU_SUPPORTS_HUGEPAGES
1518 select WEAK_ORDERING
1520 config CPU_CAVIUM_OCTEON
1521 bool "Cavium Octeon processor"
1522 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1523 select CPU_HAS_PREFETCH
1524 select CPU_SUPPORTS_64BIT_KERNEL
1525 select WEAK_ORDERING
1526 select CPU_SUPPORTS_HIGHMEM
1527 select CPU_SUPPORTS_HUGEPAGES
1528 select USB_EHCI_BIG_ENDIAN_MMIO
1529 select MIPS_L1_CACHE_SHIFT_7
1531 The Cavium Octeon processor is a highly integrated chip containing
1532 many ethernet hardware widgets for networking tasks. The processor
1533 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1534 Full details can be found at http://www.caviumnetworks.com.
1537 bool "Broadcom BMIPS"
1538 depends on SYS_HAS_CPU_BMIPS
1540 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1541 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1542 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1543 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1544 select CPU_SUPPORTS_32BIT_KERNEL
1545 select DMA_NONCOHERENT
1547 select SWAP_IO_SPACE
1548 select WEAK_ORDERING
1549 select CPU_SUPPORTS_HIGHMEM
1550 select CPU_HAS_PREFETCH
1552 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1555 bool "Netlogic XLR SoC"
1556 depends on SYS_HAS_CPU_XLR
1557 select CPU_SUPPORTS_32BIT_KERNEL
1558 select CPU_SUPPORTS_64BIT_KERNEL
1559 select CPU_SUPPORTS_HIGHMEM
1560 select CPU_SUPPORTS_HUGEPAGES
1561 select WEAK_ORDERING
1562 select WEAK_REORDERING_BEYOND_LLSC
1564 Netlogic Microsystems XLR/XLS processors.
1567 bool "Netlogic XLP SoC"
1568 depends on SYS_HAS_CPU_XLP
1569 select CPU_SUPPORTS_32BIT_KERNEL
1570 select CPU_SUPPORTS_64BIT_KERNEL
1571 select CPU_SUPPORTS_HIGHMEM
1572 select WEAK_ORDERING
1573 select WEAK_REORDERING_BEYOND_LLSC
1574 select CPU_HAS_PREFETCH
1577 Netlogic Microsystems XLP processors.
1580 config CPU_MIPS32_3_5_FEATURES
1581 bool "MIPS32 Release 3.5 Features"
1582 depends on SYS_HAS_CPU_MIPS32_R3_5
1583 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1585 Choose this option to build a kernel for release 2 or later of the
1586 MIPS32 architecture including features from the 3.5 release such as
1587 support for Enhanced Virtual Addressing (EVA).
1589 config CPU_MIPS32_3_5_EVA
1590 bool "Enhanced Virtual Addressing (EVA)"
1591 depends on CPU_MIPS32_3_5_FEATURES
1595 Choose this option if you want to enable the Enhanced Virtual
1596 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1597 One of its primary benefits is an increase in the maximum size
1598 of lowmem (up to 3GB). If unsure, say 'N' here.
1601 config CPU_NOP_WORKAROUNDS
1604 config CPU_JUMP_WORKAROUNDS
1607 config CPU_LOONGSON2F_WORKAROUNDS
1608 bool "Loongson 2F Workarounds"
1610 select CPU_NOP_WORKAROUNDS
1611 select CPU_JUMP_WORKAROUNDS
1613 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1614 require workarounds. Without workarounds the system may hang
1615 unexpectedly. For more information please refer to the gas
1616 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1618 Loongson 2F03 and later have fixed these issues and no workarounds
1619 are needed. The workarounds have no significant side effect on them
1620 but may decrease the performance of the system so this option should
1621 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1624 If unsure, please say Y.
1625 endif # CPU_LOONGSON2F
1627 config SYS_SUPPORTS_ZBOOT
1629 select HAVE_KERNEL_GZIP
1630 select HAVE_KERNEL_BZIP2
1631 select HAVE_KERNEL_LZ4
1632 select HAVE_KERNEL_LZMA
1633 select HAVE_KERNEL_LZO
1634 select HAVE_KERNEL_XZ
1636 config SYS_SUPPORTS_ZBOOT_UART16550
1638 select SYS_SUPPORTS_ZBOOT
1640 config CPU_LOONGSON2
1642 select CPU_SUPPORTS_32BIT_KERNEL
1643 select CPU_SUPPORTS_64BIT_KERNEL
1644 select CPU_SUPPORTS_HIGHMEM
1645 select CPU_SUPPORTS_HUGEPAGES
1647 config CPU_LOONGSON1
1651 select CPU_HAS_PREFETCH
1652 select CPU_SUPPORTS_32BIT_KERNEL
1653 select CPU_SUPPORTS_HIGHMEM
1654 select CPU_SUPPORTS_CPUFREQ
1656 config CPU_BMIPS32_3300
1657 select SMP_UP if SMP
1660 config CPU_BMIPS4350
1662 select SYS_SUPPORTS_SMP
1663 select SYS_SUPPORTS_HOTPLUG_CPU
1665 config CPU_BMIPS4380
1667 select MIPS_L1_CACHE_SHIFT_6
1668 select SYS_SUPPORTS_SMP
1669 select SYS_SUPPORTS_HOTPLUG_CPU
1671 config CPU_BMIPS5000
1673 select MIPS_CPU_SCACHE
1674 select MIPS_L1_CACHE_SHIFT_7
1675 select SYS_SUPPORTS_SMP
1676 select SYS_SUPPORTS_HOTPLUG_CPU
1678 config SYS_HAS_CPU_LOONGSON3
1680 select CPU_SUPPORTS_CPUFREQ
1682 config SYS_HAS_CPU_LOONGSON2E
1685 config SYS_HAS_CPU_LOONGSON2F
1687 select CPU_SUPPORTS_CPUFREQ
1688 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1689 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1691 config SYS_HAS_CPU_LOONGSON1B
1694 config SYS_HAS_CPU_MIPS32_R1
1697 config SYS_HAS_CPU_MIPS32_R2
1700 config SYS_HAS_CPU_MIPS32_R3_5
1703 config SYS_HAS_CPU_MIPS32_R6
1706 config SYS_HAS_CPU_MIPS64_R1
1709 config SYS_HAS_CPU_MIPS64_R2
1712 config SYS_HAS_CPU_MIPS64_R6
1715 config SYS_HAS_CPU_R3000
1718 config SYS_HAS_CPU_TX39XX
1721 config SYS_HAS_CPU_VR41XX
1724 config SYS_HAS_CPU_R4300
1727 config SYS_HAS_CPU_R4X00
1730 config SYS_HAS_CPU_TX49XX
1733 config SYS_HAS_CPU_R5000
1736 config SYS_HAS_CPU_R5432
1739 config SYS_HAS_CPU_R5500
1742 config SYS_HAS_CPU_R6000
1745 config SYS_HAS_CPU_NEVADA
1748 config SYS_HAS_CPU_R8000
1751 config SYS_HAS_CPU_R10000
1754 config SYS_HAS_CPU_RM7000
1757 config SYS_HAS_CPU_SB1
1760 config SYS_HAS_CPU_CAVIUM_OCTEON
1763 config SYS_HAS_CPU_BMIPS
1766 config SYS_HAS_CPU_BMIPS32_3300
1768 select SYS_HAS_CPU_BMIPS
1770 config SYS_HAS_CPU_BMIPS4350
1772 select SYS_HAS_CPU_BMIPS
1774 config SYS_HAS_CPU_BMIPS4380
1776 select SYS_HAS_CPU_BMIPS
1778 config SYS_HAS_CPU_BMIPS5000
1780 select SYS_HAS_CPU_BMIPS
1782 config SYS_HAS_CPU_XLR
1785 config SYS_HAS_CPU_XLP
1788 config MIPS_MALTA_PM
1789 depends on MIPS_MALTA
1795 # CPU may reorder R->R, R->W, W->R, W->W
1796 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1798 config WEAK_ORDERING
1802 # CPU may reorder reads and writes beyond LL/SC
1803 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1805 config WEAK_REORDERING_BEYOND_LLSC
1810 # These two indicate any level of the MIPS32 and MIPS64 architecture
1814 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1818 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1821 # These two indicate the revision of the architecture, either Release 1 or Release 2
1825 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1829 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1834 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1840 config SYS_SUPPORTS_32BIT_KERNEL
1842 config SYS_SUPPORTS_64BIT_KERNEL
1844 config CPU_SUPPORTS_32BIT_KERNEL
1846 config CPU_SUPPORTS_64BIT_KERNEL
1848 config CPU_SUPPORTS_CPUFREQ
1850 config CPU_SUPPORTS_ADDRWINCFG
1852 config CPU_SUPPORTS_HUGEPAGES
1854 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1856 config MIPS_PGD_C0_CONTEXT
1858 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1861 # Set to y for ptrace access to watch registers.
1863 config HARDWARE_WATCHPOINTS
1865 default y if CPU_MIPSR1 || CPU_MIPSR2
1870 prompt "Kernel code model"
1872 You should only select this option if you have a workload that
1873 actually benefits from 64-bit processing or if your machine has
1874 large memory. You will only be presented a single option in this
1875 menu if your system does not support both 32-bit and 64-bit kernels.
1878 bool "32-bit kernel"
1879 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1882 Select this option if you want to build a 32-bit kernel.
1884 bool "64-bit kernel"
1885 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1887 Select this option if you want to build a 64-bit kernel.
1892 bool "KVM Guest Kernel"
1893 depends on BROKEN_ON_SMP
1895 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1897 config KVM_GUEST_TIMER_FREQ
1898 int "Count/Compare Timer Frequency (MHz)"
1899 depends on KVM_GUEST
1902 Set this to non-zero if building a guest kernel for KVM to skip RTC
1903 emulation when determining guest CPU Frequency. Instead, the guest's
1904 timer frequency is specified directly.
1907 prompt "Kernel page size"
1908 default PAGE_SIZE_4KB
1910 config PAGE_SIZE_4KB
1912 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
1914 This option select the standard 4kB Linux page size. On some
1915 R3000-family processors this is the only available page size. Using
1916 4kB page size will minimize memory consumption and is therefore
1917 recommended for low memory systems.
1919 config PAGE_SIZE_8KB
1921 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1923 Using 8kB page size will result in higher performance kernel at
1924 the price of higher memory consumption. This option is available
1925 only on R8000 and cnMIPS processors. Note that you will need a
1926 suitable Linux distribution to support this.
1928 config PAGE_SIZE_16KB
1930 depends on !CPU_R3000 && !CPU_TX39XX
1932 Using 16kB page size will result in higher performance kernel at
1933 the price of higher memory consumption. This option is available on
1934 all non-R3000 family processors. Note that you will need a suitable
1935 Linux distribution to support this.
1937 config PAGE_SIZE_32KB
1939 depends on CPU_CAVIUM_OCTEON
1941 Using 32kB page size will result in higher performance kernel at
1942 the price of higher memory consumption. This option is available
1943 only on cnMIPS cores. Note that you will need a suitable Linux
1944 distribution to support this.
1946 config PAGE_SIZE_64KB
1948 depends on !CPU_R3000 && !CPU_TX39XX
1950 Using 64kB page size will result in higher performance kernel at
1951 the price of higher memory consumption. This option is available on
1952 all non-R3000 family processor. Not that at the time of this
1953 writing this option is still high experimental.
1957 config FORCE_MAX_ZONEORDER
1958 int "Maximum zone order"
1959 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
1960 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
1961 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
1962 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
1963 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
1964 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
1968 The kernel memory allocator divides physically contiguous memory
1969 blocks into "zones", where each zone is a power of two number of
1970 pages. This option selects the largest power of two that the kernel
1971 keeps in the memory allocator. If you need to allocate very large
1972 blocks of physically contiguous memory, then you may need to
1973 increase this value.
1975 This config option is actually maximum order plus one. For example,
1976 a value of 11 means that the largest free memory block is 2^10 pages.
1978 The page size is not necessarily 4KB. Keep this in mind
1979 when choosing a value for this option.
1984 config IP22_CPU_SCACHE
1989 # Support for a MIPS32 / MIPS64 style S-caches
1991 config MIPS_CPU_SCACHE
1995 config R5000_CPU_SCACHE
1999 config RM7000_CPU_SCACHE
2003 config SIBYTE_DMA_PAGEOPS
2004 bool "Use DMA to clear/copy pages"
2007 Instead of using the CPU to zero and copy pages, use a Data Mover
2008 channel. These DMA channels are otherwise unused by the standard
2009 SiByte Linux port. Seems to give a small performance benefit.
2011 config CPU_HAS_PREFETCH
2014 config CPU_GENERIC_DUMP_TLB
2016 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2020 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2022 config CPU_R4K_CACHE_TLB
2024 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2027 bool "MIPS MT SMP support (1 TC on each available VPE)"
2028 depends on SYS_SUPPORTS_MULTITHREADING
2029 select CPU_MIPSR2_IRQ_VI
2030 select CPU_MIPSR2_IRQ_EI
2036 select SYS_SUPPORTS_SMP
2037 select SYS_SUPPORTS_SCHED_SMT
2038 select MIPS_PERF_SHARED_TC_COUNTERS
2040 This is a kernel model which is known as SMVP. This is supported
2041 on cores with the MT ASE and uses the available VPEs to implement
2042 virtual processors which supports SMP. This is equivalent to the
2043 Intel Hyperthreading feature. For further information go to
2044 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2050 bool "SMT (multithreading) scheduler support"
2051 depends on SYS_SUPPORTS_SCHED_SMT
2054 SMT scheduler support improves the CPU scheduler's decision making
2055 when dealing with MIPS MT enabled cores at a cost of slightly
2056 increased overhead in some places. If unsure say N here.
2058 config SYS_SUPPORTS_SCHED_SMT
2061 config SYS_SUPPORTS_MULTITHREADING
2064 config MIPS_MT_FPAFF
2065 bool "Dynamic FPU affinity for FP-intensive threads"
2067 depends on MIPS_MT_SMP
2069 config MIPSR2_TO_R6_EMULATOR
2070 bool "MIPS R2-to-R6 emulator"
2071 depends on CPU_MIPSR6 && !SMP
2074 Choose this option if you want to run non-R6 MIPS userland code.
2075 Even if you say 'Y' here, the emulator will still be disabled by
2076 default. You can enable it using the 'mipsr2emul' kernel option.
2077 The only reason this is a build-time option is to save ~14K from the
2079 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2080 depends on SMP && CPU_MIPSR6
2082 config MIPS_VPE_LOADER
2083 bool "VPE loader support."
2084 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2085 select CPU_MIPSR2_IRQ_VI
2086 select CPU_MIPSR2_IRQ_EI
2089 Includes a loader for loading an elf relocatable object
2090 onto another VPE and running it.
2092 config MIPS_VPE_LOADER_CMP
2095 depends on MIPS_VPE_LOADER && MIPS_CMP
2097 config MIPS_VPE_LOADER_MT
2100 depends on MIPS_VPE_LOADER && !MIPS_CMP
2102 config MIPS_VPE_LOADER_TOM
2103 bool "Load VPE program into memory hidden from linux"
2104 depends on MIPS_VPE_LOADER
2107 The loader can use memory that is present but has been hidden from
2108 Linux using the kernel command line option "mem=xxMB". It's up to
2109 you to ensure the amount you put in the option and the space your
2110 program requires is less or equal to the amount physically present.
2112 config MIPS_VPE_APSP_API
2113 bool "Enable support for AP/SP API (RTLX)"
2114 depends on MIPS_VPE_LOADER
2117 config MIPS_VPE_APSP_API_CMP
2120 depends on MIPS_VPE_APSP_API && MIPS_CMP
2122 config MIPS_VPE_APSP_API_MT
2125 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2128 bool "MIPS CMP framework support (DEPRECATED)"
2129 depends on SYS_SUPPORTS_MIPS_CMP
2133 select SYS_SUPPORTS_SMP
2134 select WEAK_ORDERING
2137 Select this if you are using a bootloader which implements the "CMP
2138 framework" protocol (ie. YAMON) and want your kernel to make use of
2139 its ability to start secondary CPUs.
2141 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2145 bool "MIPS Coherent Processing System support"
2146 depends on SYS_SUPPORTS_MIPS_CPS
2149 select MIPS_CPS_PM if HOTPLUG_CPU
2152 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2153 select SYS_SUPPORTS_HOTPLUG_CPU
2154 select SYS_SUPPORTS_SMP
2155 select WEAK_ORDERING
2157 Select this if you wish to run an SMP kernel across multiple cores
2158 within a MIPS Coherent Processing System. When this option is
2159 enabled the kernel will probe for other cores and boot them with
2160 no external assistance. It is safe to enable this when hardware
2161 support is unavailable.
2177 config SB1_PASS_1_WORKAROUNDS
2179 depends on CPU_SB1_PASS_1
2182 config SB1_PASS_2_WORKAROUNDS
2184 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2187 config SB1_PASS_2_1_WORKAROUNDS
2189 depends on CPU_SB1 && CPU_SB1_PASS_2
2193 config ARCH_PHYS_ADDR_T_64BIT
2197 prompt "SmartMIPS or microMIPS ASE support"
2199 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2202 Select this if you want neither microMIPS nor SmartMIPS support
2204 config CPU_HAS_SMARTMIPS
2205 depends on SYS_SUPPORTS_SMARTMIPS
2208 SmartMIPS is a extension of the MIPS32 architecture aimed at
2209 increased security at both hardware and software level for
2210 smartcards. Enabling this option will allow proper use of the
2211 SmartMIPS instructions by Linux applications. However a kernel with
2212 this option will not work on a MIPS core without SmartMIPS core. If
2213 you don't know you probably don't have SmartMIPS and should say N
2216 config CPU_MICROMIPS
2217 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2220 When this option is enabled the kernel will be built using the
2226 bool "Support for the MIPS SIMD Architecture (EXPERIMENTAL)"
2227 depends on CPU_SUPPORTS_MSA
2228 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2230 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2231 and a set of SIMD instructions to operate on them. When this option
2232 is enabled the kernel will support allocating & switching MSA
2233 vector register contexts. If you know that your kernel will only be
2234 running on CPUs which do not support MSA or that your userland will
2235 not be making use of it then you may wish to say N here to reduce
2236 the size & complexity of your kernel.
2247 # Vectored interrupt mode is an R2 feature
2249 config CPU_MIPSR2_IRQ_VI
2253 # Extended interrupt mode is an R2 feature
2255 config CPU_MIPSR2_IRQ_EI
2260 depends on !CPU_R3000
2266 config CPU_DADDI_WORKAROUNDS
2269 config CPU_R4000_WORKAROUNDS
2271 select CPU_R4400_WORKAROUNDS
2273 config CPU_R4400_WORKAROUNDS
2277 # - Highmem only makes sense for the 32-bit kernel.
2278 # - The current highmem code will only work properly on physically indexed
2279 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2280 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2281 # moment we protect the user and offer the highmem option only on machines
2282 # where it's known to be safe. This will not offer highmem on a few systems
2283 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2284 # indexed CPUs but we're playing safe.
2285 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2286 # know they might have memory configurations that could make use of highmem
2290 bool "High Memory Support"
2291 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2293 config CPU_SUPPORTS_HIGHMEM
2296 config SYS_SUPPORTS_HIGHMEM
2299 config SYS_SUPPORTS_SMARTMIPS
2302 config SYS_SUPPORTS_MICROMIPS
2305 config SYS_SUPPORTS_MIPS16
2308 This option must be set if a kernel might be executed on a MIPS16-
2309 enabled CPU even if MIPS16 is not actually being used. In other
2310 words, it makes the kernel MIPS16-tolerant.
2312 config CPU_SUPPORTS_MSA
2315 config ARCH_FLATMEM_ENABLE
2317 depends on !NUMA && !CPU_LOONGSON2
2319 config ARCH_DISCONTIGMEM_ENABLE
2321 default y if SGI_IP27
2323 Say Y to support efficient handling of discontiguous physical memory,
2324 for architectures which are either NUMA (Non-Uniform Memory Access)
2325 or have huge holes in the physical address space for other reasons.
2326 See <file:Documentation/vm/numa> for more.
2328 config ARCH_SPARSEMEM_ENABLE
2330 select SPARSEMEM_STATIC
2334 depends on SYS_SUPPORTS_NUMA
2336 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2337 Access). This option improves performance on systems with more
2338 than two nodes; on two node systems it is generally better to
2339 leave it disabled; on single node systems disable this option
2342 config SYS_SUPPORTS_NUMA
2348 depends on NEED_MULTIPLE_NODES
2350 config HW_PERF_EVENTS
2351 bool "Enable hardware performance counter support for perf events"
2352 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2355 Enable hardware performance counter support for perf events. If
2356 disabled, perf events will use software events only.
2361 bool "Multi-Processing support"
2362 depends on SYS_SUPPORTS_SMP
2364 This enables support for systems with more than one CPU. If you have
2365 a system with only one CPU, say N. If you have a system with more
2366 than one CPU, say Y.
2368 If you say N here, the kernel will run on uni- and multiprocessor
2369 machines, but will use only one CPU of a multiprocessor machine. If
2370 you say Y here, the kernel will run on many, but not all,
2371 uniprocessor machines. On a uniprocessor machine, the kernel
2372 will run faster if you say N here.
2374 People using multiprocessor machines who say Y here should also say
2375 Y to "Enhanced Real Time Clock Support", below.
2377 See also the SMP-HOWTO available at
2378 <http://www.tldp.org/docs.html#howto>.
2380 If you don't know what to do here, say N.
2385 config SYS_SUPPORTS_MIPS_CMP
2388 config SYS_SUPPORTS_MIPS_CPS
2391 config SYS_SUPPORTS_SMP
2394 config NR_CPUS_DEFAULT_4
2397 config NR_CPUS_DEFAULT_8
2400 config NR_CPUS_DEFAULT_16
2403 config NR_CPUS_DEFAULT_32
2406 config NR_CPUS_DEFAULT_64
2410 int "Maximum number of CPUs (2-256)"
2413 default "4" if NR_CPUS_DEFAULT_4
2414 default "8" if NR_CPUS_DEFAULT_8
2415 default "16" if NR_CPUS_DEFAULT_16
2416 default "32" if NR_CPUS_DEFAULT_32
2417 default "64" if NR_CPUS_DEFAULT_64
2419 This allows you to specify the maximum number of CPUs which this
2420 kernel will support. The maximum supported value is 32 for 32-bit
2421 kernel and 64 for 64-bit kernels; the minimum value which makes
2422 sense is 1 for Qemu (useful only for kernel debugging purposes)
2423 and 2 for all others.
2425 This is purely to save memory - each supported CPU adds
2426 approximately eight kilobytes to the kernel image. For best
2427 performance should round up your number of processors to the next
2430 config MIPS_PERF_SHARED_TC_COUNTERS
2434 # Timer Interrupt Frequency Configuration
2438 prompt "Timer frequency"
2441 Allows the configuration of the timer frequency.
2444 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2447 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2450 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2453 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2456 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2459 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2462 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2466 config SYS_SUPPORTS_48HZ
2469 config SYS_SUPPORTS_100HZ
2472 config SYS_SUPPORTS_128HZ
2475 config SYS_SUPPORTS_250HZ
2478 config SYS_SUPPORTS_256HZ
2481 config SYS_SUPPORTS_1000HZ
2484 config SYS_SUPPORTS_1024HZ
2487 config SYS_SUPPORTS_ARBIT_HZ
2489 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2490 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2491 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2492 !SYS_SUPPORTS_1024HZ
2497 default 100 if HZ_100
2498 default 128 if HZ_128
2499 default 250 if HZ_250
2500 default 256 if HZ_256
2501 default 1000 if HZ_1000
2502 default 1024 if HZ_1024
2504 source "kernel/Kconfig.preempt"
2507 bool "Kexec system call"
2509 kexec is a system call that implements the ability to shutdown your
2510 current kernel, and to start another kernel. It is like a reboot
2511 but it is independent of the system firmware. And like a reboot
2512 you can start any kernel with it, not just Linux.
2514 The name comes from the similarity to the exec system call.
2516 It is an ongoing process to be certain the hardware in a machine
2517 is properly shutdown, so do not be surprised if this code does not
2518 initially work for you. As of this writing the exact hardware
2519 interface is strongly in flux, so no good recommendation can be
2523 bool "Kernel crash dumps"
2525 Generate crash dump after being started by kexec.
2526 This should be normally only set in special crash dump kernels
2527 which are loaded in the main kernel with kexec-tools into
2528 a specially reserved region and then later executed after
2529 a crash by kdump/kexec. The crash dump kernel must be compiled
2530 to a memory address not used by the main kernel or firmware using
2533 config PHYSICAL_START
2534 hex "Physical address where the kernel is loaded"
2535 default "0xffffffff84000000" if 64BIT
2536 default "0x84000000" if 32BIT
2537 depends on CRASH_DUMP
2539 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2540 If you plan to use kernel for capturing the crash dump change
2541 this value to start of the reserved region (the "X" value as
2542 specified in the "crashkernel=YM@XM" command line boot parameter
2543 passed to the panic-ed kernel).
2546 bool "Enable seccomp to safely compute untrusted bytecode"
2550 This kernel feature is useful for number crunching applications
2551 that may need to compute untrusted bytecode during their
2552 execution. By using pipes or other transports made available to
2553 the process as file descriptors supporting the read/write
2554 syscalls, it's possible to isolate those applications in
2555 their own address space using seccomp. Once seccomp is
2556 enabled via /proc/<pid>/seccomp, it cannot be disabled
2557 and the task is only allowed to execute a few safe syscalls
2558 defined by each seccomp mode.
2560 If unsure, say Y. Only embedded should say N here.
2562 config MIPS_O32_FP64_SUPPORT
2563 bool "Support for O32 binaries using 64-bit FP (EXPERIMENTAL)"
2564 depends on 32BIT || MIPS32_O32
2566 When this is enabled, the kernel will support use of 64-bit floating
2567 point registers with binaries using the O32 ABI along with the
2568 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2569 32-bit MIPS systems this support is at the cost of increasing the
2570 size and complexity of the compiled FPU emulator. Thus if you are
2571 running a MIPS32 system and know that none of your userland binaries
2572 will require 64-bit floating point, you may wish to reduce the size
2573 of your kernel & potentially improve FP emulation performance by
2576 Although binutils currently supports use of this flag the details
2577 concerning its effect upon the O32 ABI in userland are still being
2578 worked on. In order to avoid userland becoming dependant upon current
2579 behaviour before the details have been finalised, this option should
2580 be considered experimental and only enabled by those working upon
2588 select OF_EARLY_FLATTREE
2596 config LOCKDEP_SUPPORT
2600 config STACKTRACE_SUPPORT
2604 source "init/Kconfig"
2606 source "kernel/Kconfig.freezer"
2608 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2616 bool "Support for PCI controller"
2617 depends on HW_HAS_PCI
2619 select NO_GENERIC_PCI_IOPORT_MAP
2621 Find out whether you have a PCI motherboard. PCI is the name of a
2622 bus system, i.e. the way the CPU talks to the other stuff inside
2623 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2627 bool "Support for HT-linked PCI"
2629 depends on CPU_LOONGSON3
2633 Loongson family machines use Hyper-Transport bus for inter-core
2634 connection and device connection. The PCI bus is a subordinate
2635 linked at HT. Choose Y for Loongson-3 based machines.
2640 source "drivers/pci/Kconfig"
2642 source "drivers/pci/pcie/Kconfig"
2645 # ISA support is now enabled via select. Too many systems still have the one
2646 # or other ISA chip on the board that users don't know about so don't expect
2647 # users to choose the right thing ...
2654 depends on HW_HAS_EISA
2656 select GENERIC_ISA_DMA
2658 The Extended Industry Standard Architecture (EISA) bus was
2659 developed as an open alternative to the IBM MicroChannel bus.
2661 The EISA bus provided some of the features of the IBM MicroChannel
2662 bus while maintaining backward compatibility with cards made for
2663 the older ISA bus. The EISA bus saw limited use between 1988 and
2664 1995 when it was made obsolete by the PCI bus.
2666 Say Y here if you are building a kernel for an EISA-based machine.
2670 source "drivers/eisa/Kconfig"
2673 bool "TURBOchannel support"
2674 depends on MACH_DECSTATION
2676 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2677 processors. TURBOchannel programming specifications are available
2679 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2681 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2682 Linux driver support status is documented at:
2683 <http://www.linux-mips.org/wiki/DECstation>
2693 select MIPS_EXTERNAL_TIMER
2701 source "drivers/pcmcia/Kconfig"
2703 source "drivers/pci/hotplug/Kconfig"
2706 tristate "RapidIO support"
2710 If you say Y here, the kernel will include drivers and
2711 infrastructure code to support RapidIO interconnect devices.
2713 source "drivers/rapidio/Kconfig"
2717 menu "Executable file formats"
2719 source "fs/Kconfig.binfmt"
2724 config MIPS32_COMPAT
2730 config SYSVIPC_COMPAT
2734 bool "Kernel support for o32 binaries"
2736 select ARCH_WANT_OLD_COMPAT_IPC
2738 select MIPS32_COMPAT
2739 select SYSVIPC_COMPAT if SYSVIPC
2741 Select this option if you want to run o32 binaries. These are pure
2742 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2743 existing binaries are in this format.
2748 bool "Kernel support for n32 binaries"
2751 select MIPS32_COMPAT
2752 select SYSVIPC_COMPAT if SYSVIPC
2754 Select this option if you want to run n32 binaries. These are
2755 64-bit binaries using 32-bit quantities for addressing and certain
2756 data that would normally be 64-bit. They are used in special
2763 default y if MIPS32_O32 || MIPS32_N32
2767 menu "Power management options"
2769 config ARCH_HIBERNATION_POSSIBLE
2771 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2773 config ARCH_SUSPEND_POSSIBLE
2775 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2777 source "kernel/power/Kconfig"
2781 config MIPS_EXTERNAL_TIMER
2784 menu "CPU Power Management"
2786 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2787 source "drivers/cpufreq/Kconfig"
2790 source "drivers/cpuidle/Kconfig"
2794 source "net/Kconfig"
2796 source "drivers/Kconfig"
2798 source "drivers/firmware/Kconfig"
2802 source "arch/mips/Kconfig.debug"
2804 source "security/Kconfig"
2806 source "crypto/Kconfig"
2808 source "lib/Kconfig"
2810 source "arch/mips/kvm/Kconfig"