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_MIPS64_R1
381 select SYS_HAS_CPU_MIPS64_R2
382 select SYS_HAS_CPU_NEVADA
383 select SYS_HAS_CPU_RM7000
384 select SYS_SUPPORTS_32BIT_KERNEL
385 select SYS_SUPPORTS_64BIT_KERNEL
386 select SYS_SUPPORTS_BIG_ENDIAN
387 select SYS_SUPPORTS_LITTLE_ENDIAN
388 select SYS_SUPPORTS_MICROMIPS
389 select SYS_SUPPORTS_MIPS_CMP
390 select SYS_SUPPORTS_MIPS_CPS
391 select SYS_SUPPORTS_MIPS16
392 select SYS_SUPPORTS_MULTITHREADING
393 select SYS_SUPPORTS_SMARTMIPS
394 select SYS_SUPPORTS_ZBOOT
396 This enables support for the MIPS Technologies Malta evaluation
400 bool "MIPS SEAD3 board"
406 select CLKSRC_MIPS_GIC
407 select CPU_MIPSR2_IRQ_VI
408 select CPU_MIPSR2_IRQ_EI
409 select DMA_NONCOHERENT
414 select SYS_HAS_CPU_MIPS32_R1
415 select SYS_HAS_CPU_MIPS32_R2
416 select SYS_HAS_CPU_MIPS64_R1
417 select SYS_HAS_EARLY_PRINTK
418 select SYS_SUPPORTS_32BIT_KERNEL
419 select SYS_SUPPORTS_64BIT_KERNEL
420 select SYS_SUPPORTS_BIG_ENDIAN
421 select SYS_SUPPORTS_LITTLE_ENDIAN
422 select SYS_SUPPORTS_SMARTMIPS
423 select SYS_SUPPORTS_MICROMIPS
424 select SYS_SUPPORTS_MIPS16
425 select USB_EHCI_BIG_ENDIAN_DESC
426 select USB_EHCI_BIG_ENDIAN_MMIO
429 This enables support for the MIPS Technologies SEAD3 evaluation
433 bool "NEC EMMA2RH Mark-eins board"
437 This enables support for the NEC Electronics Mark-eins boards.
440 bool "NEC VR4100 series based machines"
443 select SYS_HAS_CPU_VR41XX
444 select SYS_SUPPORTS_MIPS16
445 select ARCH_REQUIRE_GPIOLIB
448 bool "NXP STB220 board"
451 Support for NXP Semiconductors STB220 Development Board.
458 Support for NXP Semiconductors STB225 Development Board.
461 bool "PMC-Sierra MSP chipsets"
464 select DMA_NONCOHERENT
466 select NO_EXCEPT_FILL
468 select SYS_HAS_CPU_MIPS32_R1
469 select SYS_HAS_CPU_MIPS32_R2
470 select SYS_SUPPORTS_32BIT_KERNEL
471 select SYS_SUPPORTS_BIG_ENDIAN
472 select SYS_SUPPORTS_MIPS16
475 select SERIAL_8250_CONSOLE
476 select USB_EHCI_BIG_ENDIAN_MMIO
477 select USB_EHCI_BIG_ENDIAN_DESC
479 This adds support for the PMC-Sierra family of Multi-Service
480 Processor System-On-A-Chips. These parts include a number
481 of integrated peripherals, interfaces and DSPs in addition to
482 a variety of MIPS cores.
485 bool "Ralink based machines"
489 select DMA_NONCOHERENT
492 select SYS_HAS_CPU_MIPS32_R1
493 select SYS_HAS_CPU_MIPS32_R2
494 select SYS_SUPPORTS_32BIT_KERNEL
495 select SYS_SUPPORTS_LITTLE_ENDIAN
496 select SYS_SUPPORTS_MIPS16
497 select SYS_HAS_EARLY_PRINTK
498 select HAVE_MACH_CLKDEV
500 select ARCH_HAS_RESET_CONTROLLER
501 select RESET_CONTROLLER
504 bool "SGI IP22 (Indy/Indigo2)"
510 select DEFAULT_SGI_PARTITION
511 select DMA_NONCOHERENT
515 select IP22_CPU_SCACHE
517 select GENERIC_ISA_DMA_SUPPORT_BROKEN
519 select SGI_HAS_INDYDOG
525 select SYS_HAS_CPU_R4X00
526 select SYS_HAS_CPU_R5000
528 # Disable EARLY_PRINTK for now since it leads to overwritten prom
529 # memory during early boot on some machines.
531 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
532 # for a more details discussion
534 # select SYS_HAS_EARLY_PRINTK
535 select SYS_SUPPORTS_32BIT_KERNEL
536 select SYS_SUPPORTS_64BIT_KERNEL
537 select SYS_SUPPORTS_BIG_ENDIAN
538 select MIPS_L1_CACHE_SHIFT_7
540 This are the SGI Indy, Challenge S and Indigo2, as well as certain
541 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
542 that runs on these, say Y here.
545 bool "SGI IP27 (Origin200/2000)"
549 select DEFAULT_SGI_PARTITION
551 select SYS_HAS_EARLY_PRINTK
553 select NR_CPUS_DEFAULT_64
554 select SYS_HAS_CPU_R10000
555 select SYS_SUPPORTS_64BIT_KERNEL
556 select SYS_SUPPORTS_BIG_ENDIAN
557 select SYS_SUPPORTS_NUMA
558 select SYS_SUPPORTS_SMP
559 select MIPS_L1_CACHE_SHIFT_7
561 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
562 workstations. To compile a Linux kernel that runs on these, say Y
566 bool "SGI IP28 (Indigo2 R10k)"
572 select DEFAULT_SGI_PARTITION
573 select DMA_NONCOHERENT
574 select GENERIC_ISA_DMA_SUPPORT_BROKEN
580 select SGI_HAS_INDYDOG
586 select SYS_HAS_CPU_R10000
588 # Disable EARLY_PRINTK for now since it leads to overwritten prom
589 # memory during early boot on some machines.
591 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
592 # for a more details discussion
594 # select SYS_HAS_EARLY_PRINTK
595 select SYS_SUPPORTS_64BIT_KERNEL
596 select SYS_SUPPORTS_BIG_ENDIAN
597 select MIPS_L1_CACHE_SHIFT_7
599 This is the SGI Indigo2 with R10000 processor. To compile a Linux
600 kernel that runs on these, say Y here.
609 select DMA_NONCOHERENT
612 select R5000_CPU_SCACHE
613 select RM7000_CPU_SCACHE
614 select SYS_HAS_CPU_R5000
615 select SYS_HAS_CPU_R10000 if BROKEN
616 select SYS_HAS_CPU_RM7000
617 select SYS_HAS_CPU_NEVADA
618 select SYS_SUPPORTS_64BIT_KERNEL
619 select SYS_SUPPORTS_BIG_ENDIAN
621 If you want this kernel to run on SGI O2 workstation, say Y here.
624 bool "Sibyte BCM91120C-CRhine"
627 select SIBYTE_BCM1120
629 select SYS_HAS_CPU_SB1
630 select SYS_SUPPORTS_BIG_ENDIAN
631 select SYS_SUPPORTS_LITTLE_ENDIAN
634 bool "Sibyte BCM91120x-Carmel"
637 select SIBYTE_BCM1120
639 select SYS_HAS_CPU_SB1
640 select SYS_SUPPORTS_BIG_ENDIAN
641 select SYS_SUPPORTS_LITTLE_ENDIAN
644 bool "Sibyte BCM91125C-CRhone"
647 select SIBYTE_BCM1125
649 select SYS_HAS_CPU_SB1
650 select SYS_SUPPORTS_BIG_ENDIAN
651 select SYS_SUPPORTS_HIGHMEM
652 select SYS_SUPPORTS_LITTLE_ENDIAN
655 bool "Sibyte BCM91125E-Rhone"
658 select SIBYTE_BCM1125H
660 select SYS_HAS_CPU_SB1
661 select SYS_SUPPORTS_BIG_ENDIAN
662 select SYS_SUPPORTS_LITTLE_ENDIAN
665 bool "Sibyte BCM91250A-SWARM"
668 select HAVE_PATA_PLATFORM
671 select SYS_HAS_CPU_SB1
672 select SYS_SUPPORTS_BIG_ENDIAN
673 select SYS_SUPPORTS_HIGHMEM
674 select SYS_SUPPORTS_LITTLE_ENDIAN
675 select ZONE_DMA32 if 64BIT
677 config SIBYTE_LITTLESUR
678 bool "Sibyte BCM91250C2-LittleSur"
681 select HAVE_PATA_PLATFORM
684 select SYS_HAS_CPU_SB1
685 select SYS_SUPPORTS_BIG_ENDIAN
686 select SYS_SUPPORTS_HIGHMEM
687 select SYS_SUPPORTS_LITTLE_ENDIAN
689 config SIBYTE_SENTOSA
690 bool "Sibyte BCM91250E-Sentosa"
695 select SYS_HAS_CPU_SB1
696 select SYS_SUPPORTS_BIG_ENDIAN
697 select SYS_SUPPORTS_LITTLE_ENDIAN
700 bool "Sibyte BCM91480B-BigSur"
703 select NR_CPUS_DEFAULT_4
704 select SIBYTE_BCM1x80
706 select SYS_HAS_CPU_SB1
707 select SYS_SUPPORTS_BIG_ENDIAN
708 select SYS_SUPPORTS_HIGHMEM
709 select SYS_SUPPORTS_LITTLE_ENDIAN
710 select ZONE_DMA32 if 64BIT
713 bool "SNI RM200/300/400"
714 select FW_ARC if CPU_LITTLE_ENDIAN
715 select FW_ARC32 if CPU_LITTLE_ENDIAN
716 select FW_SNIPROM if CPU_BIG_ENDIAN
717 select ARCH_MAY_HAVE_PC_FDC
721 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
722 select DMA_NONCOHERENT
723 select GENERIC_ISA_DMA
724 select HAVE_PCSPKR_PLATFORM
731 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
732 select SYS_HAS_CPU_R4X00
733 select SYS_HAS_CPU_R5000
734 select SYS_HAS_CPU_R10000
735 select R5000_CPU_SCACHE
736 select SYS_HAS_EARLY_PRINTK
737 select SYS_SUPPORTS_32BIT_KERNEL
738 select SYS_SUPPORTS_64BIT_KERNEL
739 select SYS_SUPPORTS_BIG_ENDIAN
740 select SYS_SUPPORTS_HIGHMEM
741 select SYS_SUPPORTS_LITTLE_ENDIAN
743 The SNI RM200/300/400 are MIPS-based machines manufactured by
744 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
745 Technology and now in turn merged with Fujitsu. Say Y here to
746 support this machine type.
749 bool "Toshiba TX39 series based machines"
752 bool "Toshiba TX49 series based machines"
754 config MIKROTIK_RB532
755 bool "Mikrotik RB532 boards"
758 select DMA_NONCOHERENT
761 select SYS_HAS_CPU_MIPS32_R1
762 select SYS_SUPPORTS_32BIT_KERNEL
763 select SYS_SUPPORTS_LITTLE_ENDIAN
766 select ARCH_REQUIRE_GPIOLIB
767 select MIPS_L1_CACHE_SHIFT_4
769 Support the Mikrotik(tm) RouterBoard 532 series,
770 based on the IDT RC32434 SoC.
772 config CAVIUM_OCTEON_SOC
773 bool "Cavium Networks Octeon SoC based boards"
775 select ARCH_PHYS_ADDR_T_64BIT
777 select SYS_SUPPORTS_64BIT_KERNEL
778 select SYS_SUPPORTS_BIG_ENDIAN
780 select SYS_SUPPORTS_HOTPLUG_CPU
781 select SYS_HAS_EARLY_PRINTK
782 select SYS_HAS_CPU_CAVIUM_OCTEON
787 select ARCH_REQUIRE_GPIOLIB
790 select ARCH_SPARSEMEM_ENABLE
791 select SYS_SUPPORTS_SMP
792 select NR_CPUS_DEFAULT_16
795 This option supports all of the Octeon reference boards from Cavium
796 Networks. It builds a kernel that dynamically determines the Octeon
797 CPU type and supports all known board reference implementations.
798 Some of the supported boards are:
805 Say Y here for most Octeon reference boards.
808 bool "Netlogic XLR/XLS based systems"
811 select SYS_HAS_CPU_XLR
812 select SYS_SUPPORTS_SMP
815 select SYS_SUPPORTS_32BIT_KERNEL
816 select SYS_SUPPORTS_64BIT_KERNEL
817 select ARCH_PHYS_ADDR_T_64BIT
818 select SYS_SUPPORTS_BIG_ENDIAN
819 select SYS_SUPPORTS_HIGHMEM
821 select NR_CPUS_DEFAULT_32
825 select ZONE_DMA32 if 64BIT
827 select SYS_HAS_EARLY_PRINTK
828 select SYS_SUPPORTS_ZBOOT
829 select SYS_SUPPORTS_ZBOOT_UART16550
831 Support for systems based on Netlogic XLR and XLS processors.
832 Say Y here if you have a XLR or XLS based board.
835 bool "Netlogic XLP based systems"
838 select SYS_HAS_CPU_XLP
839 select SYS_SUPPORTS_SMP
841 select SYS_SUPPORTS_32BIT_KERNEL
842 select SYS_SUPPORTS_64BIT_KERNEL
843 select ARCH_PHYS_ADDR_T_64BIT
844 select SYS_SUPPORTS_BIG_ENDIAN
845 select SYS_SUPPORTS_LITTLE_ENDIAN
846 select SYS_SUPPORTS_HIGHMEM
848 select NR_CPUS_DEFAULT_32
852 select ZONE_DMA32 if 64BIT
854 select SYS_HAS_EARLY_PRINTK
856 select SYS_SUPPORTS_ZBOOT
857 select SYS_SUPPORTS_ZBOOT_UART16550
859 This board is based on Netlogic XLP Processor.
860 Say Y here if you have a XLP based board.
863 bool "Para-Virtualized guest system"
867 select SYS_SUPPORTS_64BIT_KERNEL
868 select SYS_SUPPORTS_32BIT_KERNEL
869 select SYS_SUPPORTS_BIG_ENDIAN
870 select SYS_SUPPORTS_SMP
871 select NR_CPUS_DEFAULT_4
872 select SYS_HAS_EARLY_PRINTK
873 select SYS_HAS_CPU_MIPS32_R2
874 select SYS_HAS_CPU_MIPS64_R2
875 select SYS_HAS_CPU_CAVIUM_OCTEON
879 This option supports guest running under ????
883 source "arch/mips/alchemy/Kconfig"
884 source "arch/mips/ath25/Kconfig"
885 source "arch/mips/ath79/Kconfig"
886 source "arch/mips/bcm47xx/Kconfig"
887 source "arch/mips/bcm63xx/Kconfig"
888 source "arch/mips/jazz/Kconfig"
889 source "arch/mips/jz4740/Kconfig"
890 source "arch/mips/lantiq/Kconfig"
891 source "arch/mips/lasat/Kconfig"
892 source "arch/mips/pmcs-msp71xx/Kconfig"
893 source "arch/mips/ralink/Kconfig"
894 source "arch/mips/sgi-ip27/Kconfig"
895 source "arch/mips/sibyte/Kconfig"
896 source "arch/mips/txx9/Kconfig"
897 source "arch/mips/vr41xx/Kconfig"
898 source "arch/mips/cavium-octeon/Kconfig"
899 source "arch/mips/loongson/Kconfig"
900 source "arch/mips/loongson1/Kconfig"
901 source "arch/mips/netlogic/Kconfig"
902 source "arch/mips/paravirt/Kconfig"
906 config RWSEM_GENERIC_SPINLOCK
910 config RWSEM_XCHGADD_ALGORITHM
913 config ARCH_HAS_ILOG2_U32
917 config ARCH_HAS_ILOG2_U64
921 config GENERIC_HWEIGHT
925 config GENERIC_CALIBRATE_DELAY
929 config SCHED_OMIT_FRAME_POINTER
934 # Select some configuration options automatically based on user selections.
939 config ARCH_MAY_HAVE_PC_FDC
976 select ARCH_REQUIRE_GPIOLIB
982 config ARCH_DMA_ADDR_T_64BIT
983 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
985 config DMA_MAYBE_COHERENT
986 select DMA_NONCOHERENT
992 config DMA_NONCOHERENT
994 select NEED_DMA_MAP_STATE
996 config NEED_DMA_MAP_STATE
999 config SYS_HAS_EARLY_PRINTK
1003 bool "Support for hot-pluggable CPUs"
1004 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
1006 Say Y here to allow turning CPUs off and on. CPUs can be
1007 controlled through /sys/devices/system/cpu.
1008 (Note: power management support will enable this option
1009 automatically on SMP systems. )
1010 Say N if you want to disable CPU hotplug.
1012 config SYS_SUPPORTS_HOTPLUG_CPU
1019 config MIPS_BONITO64
1034 config NO_IOPORT_MAP
1037 config GENERIC_ISA_DMA
1039 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1042 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1044 select GENERIC_ISA_DMA
1049 config HOLES_IN_ZONE
1053 # Endianness selection. Sufficiently obscure so many users don't know what to
1054 # answer,so we try hard to limit the available choices. Also the use of a
1055 # choice statement should be more obvious to the user.
1058 prompt "Endianness selection"
1060 Some MIPS machines can be configured for either little or big endian
1061 byte order. These modes require different kernels and a different
1062 Linux distribution. In general there is one preferred byteorder for a
1063 particular system but some systems are just as commonly used in the
1064 one or the other endianness.
1066 config CPU_BIG_ENDIAN
1068 depends on SYS_SUPPORTS_BIG_ENDIAN
1070 config CPU_LITTLE_ENDIAN
1071 bool "Little endian"
1072 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1079 config SYS_SUPPORTS_APM_EMULATION
1082 config SYS_SUPPORTS_BIG_ENDIAN
1085 config SYS_SUPPORTS_LITTLE_ENDIAN
1088 config SYS_SUPPORTS_HUGETLBFS
1090 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1093 config MIPS_HUGE_TLB_SUPPORT
1094 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1115 config PCI_GT64XXX_PCI0
1118 config NO_EXCEPT_FILL
1125 select DMA_NONCOHERENT
1127 select SWAP_IO_SPACE
1128 select SYS_HAS_CPU_R5500
1129 select SYS_SUPPORTS_32BIT_KERNEL
1130 select SYS_SUPPORTS_64BIT_KERNEL
1131 select SYS_SUPPORTS_BIG_ENDIAN
1138 select DMA_NONCOHERENT
1139 select SYS_HAS_CPU_MIPS32_R2
1140 select SYS_SUPPORTS_32BIT_KERNEL
1141 select SYS_SUPPORTS_LITTLE_ENDIAN
1142 select SYS_SUPPORTS_BIG_ENDIAN
1143 select SYS_SUPPORTS_MIPS16
1144 select CPU_MIPSR2_IRQ_VI
1150 config SWAP_IO_SPACE
1153 config SGI_HAS_INDYDOG
1165 config SGI_HAS_ZILOG
1168 config SGI_HAS_I8042
1171 config DEFAULT_SGI_PARTITION
1183 config MIPS_L1_CACHE_SHIFT_4
1186 config MIPS_L1_CACHE_SHIFT_5
1189 config MIPS_L1_CACHE_SHIFT_6
1192 config MIPS_L1_CACHE_SHIFT_7
1195 config MIPS_L1_CACHE_SHIFT
1197 default "4" if MIPS_L1_CACHE_SHIFT_4
1198 default "5" if MIPS_L1_CACHE_SHIFT_5
1199 default "6" if MIPS_L1_CACHE_SHIFT_6
1200 default "7" if MIPS_L1_CACHE_SHIFT_7
1203 config HAVE_STD_PC_SERIAL_PORT
1207 bool "ARC console support"
1208 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1212 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1217 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1226 menu "CPU selection"
1232 config CPU_LOONGSON3
1233 bool "Loongson 3 CPU"
1234 depends on SYS_HAS_CPU_LOONGSON3
1235 select CPU_SUPPORTS_64BIT_KERNEL
1236 select CPU_SUPPORTS_HIGHMEM
1237 select CPU_SUPPORTS_HUGEPAGES
1238 select WEAK_ORDERING
1239 select WEAK_REORDERING_BEYOND_LLSC
1241 The Loongson 3 processor implements the MIPS64R2 instruction
1242 set with many extensions.
1244 config CPU_LOONGSON2E
1246 depends on SYS_HAS_CPU_LOONGSON2E
1247 select CPU_LOONGSON2
1249 The Loongson 2E processor implements the MIPS III instruction set
1250 with many extensions.
1252 It has an internal FPGA northbridge, which is compatible to
1255 config CPU_LOONGSON2F
1257 depends on SYS_HAS_CPU_LOONGSON2F
1258 select CPU_LOONGSON2
1259 select ARCH_REQUIRE_GPIOLIB
1261 The Loongson 2F processor implements the MIPS III instruction set
1262 with many extensions.
1264 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1265 have a similar programming interface with FPGA northbridge used in
1268 config CPU_LOONGSON1B
1270 depends on SYS_HAS_CPU_LOONGSON1B
1271 select CPU_LOONGSON1
1273 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1274 release 2 instruction set.
1276 config CPU_MIPS32_R1
1277 bool "MIPS32 Release 1"
1278 depends on SYS_HAS_CPU_MIPS32_R1
1279 select CPU_HAS_PREFETCH
1280 select CPU_SUPPORTS_32BIT_KERNEL
1281 select CPU_SUPPORTS_HIGHMEM
1283 Choose this option to build a kernel for release 1 or later of the
1284 MIPS32 architecture. Most modern embedded systems with a 32-bit
1285 MIPS processor are based on a MIPS32 processor. If you know the
1286 specific type of processor in your system, choose those that one
1287 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1288 Release 2 of the MIPS32 architecture is available since several
1289 years so chances are you even have a MIPS32 Release 2 processor
1290 in which case you should choose CPU_MIPS32_R2 instead for better
1293 config CPU_MIPS32_R2
1294 bool "MIPS32 Release 2"
1295 depends on SYS_HAS_CPU_MIPS32_R2
1296 select CPU_HAS_PREFETCH
1297 select CPU_SUPPORTS_32BIT_KERNEL
1298 select CPU_SUPPORTS_HIGHMEM
1299 select CPU_SUPPORTS_MSA
1302 Choose this option to build a kernel for release 2 or later of the
1303 MIPS32 architecture. Most modern embedded systems with a 32-bit
1304 MIPS processor are based on a MIPS32 processor. If you know the
1305 specific type of processor in your system, choose those that one
1306 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1308 config CPU_MIPS32_R6
1309 bool "MIPS32 Release 6 (EXPERIMENTAL)"
1310 depends on SYS_HAS_CPU_MIPS32_R6
1311 select CPU_HAS_PREFETCH
1312 select CPU_SUPPORTS_32BIT_KERNEL
1313 select CPU_SUPPORTS_HIGHMEM
1314 select CPU_SUPPORTS_MSA
1316 select MIPS_O32_FP64_SUPPORT
1318 Choose this option to build a kernel for release 6 or later of the
1319 MIPS32 architecture. New MIPS processors, starting with the Warrior
1320 family, are based on a MIPS32r6 processor. If you own an older
1321 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1323 config CPU_MIPS64_R1
1324 bool "MIPS64 Release 1"
1325 depends on SYS_HAS_CPU_MIPS64_R1
1326 select CPU_HAS_PREFETCH
1327 select CPU_SUPPORTS_32BIT_KERNEL
1328 select CPU_SUPPORTS_64BIT_KERNEL
1329 select CPU_SUPPORTS_HIGHMEM
1330 select CPU_SUPPORTS_HUGEPAGES
1332 Choose this option to build a kernel for release 1 or later of the
1333 MIPS64 architecture. Many modern embedded systems with a 64-bit
1334 MIPS processor are based on a MIPS64 processor. If you know the
1335 specific type of processor in your system, choose those that one
1336 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1337 Release 2 of the MIPS64 architecture is available since several
1338 years so chances are you even have a MIPS64 Release 2 processor
1339 in which case you should choose CPU_MIPS64_R2 instead for better
1342 config CPU_MIPS64_R2
1343 bool "MIPS64 Release 2"
1344 depends on SYS_HAS_CPU_MIPS64_R2
1345 select CPU_HAS_PREFETCH
1346 select CPU_SUPPORTS_32BIT_KERNEL
1347 select CPU_SUPPORTS_64BIT_KERNEL
1348 select CPU_SUPPORTS_HIGHMEM
1349 select CPU_SUPPORTS_HUGEPAGES
1350 select CPU_SUPPORTS_MSA
1352 Choose this option to build a kernel for release 2 or later of the
1353 MIPS64 architecture. Many modern embedded systems with a 64-bit
1354 MIPS processor are based on a MIPS64 processor. If you know the
1355 specific type of processor in your system, choose those that one
1356 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1358 config CPU_MIPS64_R6
1359 bool "MIPS64 Release 6 (EXPERIMENTAL)"
1360 depends on SYS_HAS_CPU_MIPS64_R6
1361 select CPU_HAS_PREFETCH
1362 select CPU_SUPPORTS_32BIT_KERNEL
1363 select CPU_SUPPORTS_64BIT_KERNEL
1364 select CPU_SUPPORTS_HIGHMEM
1365 select CPU_SUPPORTS_MSA
1367 Choose this option to build a kernel for release 6 or later of the
1368 MIPS64 architecture. New MIPS processors, starting with the Warrior
1369 family, are based on a MIPS64r6 processor. If you own an older
1370 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1374 depends on SYS_HAS_CPU_R3000
1376 select CPU_SUPPORTS_32BIT_KERNEL
1377 select CPU_SUPPORTS_HIGHMEM
1379 Please make sure to pick the right CPU type. Linux/MIPS is not
1380 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1381 *not* work on R4000 machines and vice versa. However, since most
1382 of the supported machines have an R4000 (or similar) CPU, R4x00
1383 might be a safe bet. If the resulting kernel does not work,
1384 try to recompile with R3000.
1388 depends on SYS_HAS_CPU_TX39XX
1389 select CPU_SUPPORTS_32BIT_KERNEL
1393 depends on SYS_HAS_CPU_VR41XX
1394 select CPU_SUPPORTS_32BIT_KERNEL
1395 select CPU_SUPPORTS_64BIT_KERNEL
1397 The options selects support for the NEC VR4100 series of processors.
1398 Only choose this option if you have one of these processors as a
1399 kernel built with this option will not run on any other type of
1400 processor or vice versa.
1404 depends on SYS_HAS_CPU_R4300
1405 select CPU_SUPPORTS_32BIT_KERNEL
1406 select CPU_SUPPORTS_64BIT_KERNEL
1408 MIPS Technologies R4300-series processors.
1412 depends on SYS_HAS_CPU_R4X00
1413 select CPU_SUPPORTS_32BIT_KERNEL
1414 select CPU_SUPPORTS_64BIT_KERNEL
1415 select CPU_SUPPORTS_HUGEPAGES
1417 MIPS Technologies R4000-series processors other than 4300, including
1418 the R4000, R4400, R4600, and 4700.
1422 depends on SYS_HAS_CPU_TX49XX
1423 select CPU_HAS_PREFETCH
1424 select CPU_SUPPORTS_32BIT_KERNEL
1425 select CPU_SUPPORTS_64BIT_KERNEL
1426 select CPU_SUPPORTS_HUGEPAGES
1430 depends on SYS_HAS_CPU_R5000
1431 select CPU_SUPPORTS_32BIT_KERNEL
1432 select CPU_SUPPORTS_64BIT_KERNEL
1433 select CPU_SUPPORTS_HUGEPAGES
1435 MIPS Technologies R5000-series processors other than the Nevada.
1439 depends on SYS_HAS_CPU_R5432
1440 select CPU_SUPPORTS_32BIT_KERNEL
1441 select CPU_SUPPORTS_64BIT_KERNEL
1442 select CPU_SUPPORTS_HUGEPAGES
1446 depends on SYS_HAS_CPU_R5500
1447 select CPU_SUPPORTS_32BIT_KERNEL
1448 select CPU_SUPPORTS_64BIT_KERNEL
1449 select CPU_SUPPORTS_HUGEPAGES
1451 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1456 depends on SYS_HAS_CPU_R6000
1457 select CPU_SUPPORTS_32BIT_KERNEL
1459 MIPS Technologies R6000 and R6000A series processors. Note these
1460 processors are extremely rare and the support for them is incomplete.
1464 depends on SYS_HAS_CPU_NEVADA
1465 select CPU_SUPPORTS_32BIT_KERNEL
1466 select CPU_SUPPORTS_64BIT_KERNEL
1467 select CPU_SUPPORTS_HUGEPAGES
1469 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1473 depends on SYS_HAS_CPU_R8000
1474 select CPU_HAS_PREFETCH
1475 select CPU_SUPPORTS_64BIT_KERNEL
1477 MIPS Technologies R8000 processors. Note these processors are
1478 uncommon and the support for them is incomplete.
1482 depends on SYS_HAS_CPU_R10000
1483 select CPU_HAS_PREFETCH
1484 select CPU_SUPPORTS_32BIT_KERNEL
1485 select CPU_SUPPORTS_64BIT_KERNEL
1486 select CPU_SUPPORTS_HIGHMEM
1487 select CPU_SUPPORTS_HUGEPAGES
1489 MIPS Technologies R10000-series processors.
1493 depends on SYS_HAS_CPU_RM7000
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
1502 depends on SYS_HAS_CPU_SB1
1503 select CPU_SUPPORTS_32BIT_KERNEL
1504 select CPU_SUPPORTS_64BIT_KERNEL
1505 select CPU_SUPPORTS_HIGHMEM
1506 select CPU_SUPPORTS_HUGEPAGES
1507 select WEAK_ORDERING
1509 config CPU_CAVIUM_OCTEON
1510 bool "Cavium Octeon processor"
1511 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1512 select CPU_HAS_PREFETCH
1513 select CPU_SUPPORTS_64BIT_KERNEL
1514 select WEAK_ORDERING
1515 select CPU_SUPPORTS_HIGHMEM
1516 select CPU_SUPPORTS_HUGEPAGES
1517 select USB_EHCI_BIG_ENDIAN_MMIO
1518 select MIPS_L1_CACHE_SHIFT_7
1520 The Cavium Octeon processor is a highly integrated chip containing
1521 many ethernet hardware widgets for networking tasks. The processor
1522 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1523 Full details can be found at http://www.caviumnetworks.com.
1526 bool "Broadcom BMIPS"
1527 depends on SYS_HAS_CPU_BMIPS
1529 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1530 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1531 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1532 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1533 select CPU_SUPPORTS_32BIT_KERNEL
1534 select DMA_NONCOHERENT
1536 select SWAP_IO_SPACE
1537 select WEAK_ORDERING
1538 select CPU_SUPPORTS_HIGHMEM
1539 select CPU_HAS_PREFETCH
1541 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1544 bool "Netlogic XLR SoC"
1545 depends on SYS_HAS_CPU_XLR
1546 select CPU_SUPPORTS_32BIT_KERNEL
1547 select CPU_SUPPORTS_64BIT_KERNEL
1548 select CPU_SUPPORTS_HIGHMEM
1549 select CPU_SUPPORTS_HUGEPAGES
1550 select WEAK_ORDERING
1551 select WEAK_REORDERING_BEYOND_LLSC
1553 Netlogic Microsystems XLR/XLS processors.
1556 bool "Netlogic XLP SoC"
1557 depends on SYS_HAS_CPU_XLP
1558 select CPU_SUPPORTS_32BIT_KERNEL
1559 select CPU_SUPPORTS_64BIT_KERNEL
1560 select CPU_SUPPORTS_HIGHMEM
1561 select WEAK_ORDERING
1562 select WEAK_REORDERING_BEYOND_LLSC
1563 select CPU_HAS_PREFETCH
1566 Netlogic Microsystems XLP processors.
1569 config CPU_MIPS32_3_5_FEATURES
1570 bool "MIPS32 Release 3.5 Features"
1571 depends on SYS_HAS_CPU_MIPS32_R3_5
1572 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1574 Choose this option to build a kernel for release 2 or later of the
1575 MIPS32 architecture including features from the 3.5 release such as
1576 support for Enhanced Virtual Addressing (EVA).
1578 config CPU_MIPS32_3_5_EVA
1579 bool "Enhanced Virtual Addressing (EVA)"
1580 depends on CPU_MIPS32_3_5_FEATURES
1584 Choose this option if you want to enable the Enhanced Virtual
1585 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1586 One of its primary benefits is an increase in the maximum size
1587 of lowmem (up to 3GB). If unsure, say 'N' here.
1590 config CPU_NOP_WORKAROUNDS
1593 config CPU_JUMP_WORKAROUNDS
1596 config CPU_LOONGSON2F_WORKAROUNDS
1597 bool "Loongson 2F Workarounds"
1599 select CPU_NOP_WORKAROUNDS
1600 select CPU_JUMP_WORKAROUNDS
1602 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1603 require workarounds. Without workarounds the system may hang
1604 unexpectedly. For more information please refer to the gas
1605 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1607 Loongson 2F03 and later have fixed these issues and no workarounds
1608 are needed. The workarounds have no significant side effect on them
1609 but may decrease the performance of the system so this option should
1610 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1613 If unsure, please say Y.
1614 endif # CPU_LOONGSON2F
1616 config SYS_SUPPORTS_ZBOOT
1618 select HAVE_KERNEL_GZIP
1619 select HAVE_KERNEL_BZIP2
1620 select HAVE_KERNEL_LZ4
1621 select HAVE_KERNEL_LZMA
1622 select HAVE_KERNEL_LZO
1623 select HAVE_KERNEL_XZ
1625 config SYS_SUPPORTS_ZBOOT_UART16550
1627 select SYS_SUPPORTS_ZBOOT
1629 config CPU_LOONGSON2
1631 select CPU_SUPPORTS_32BIT_KERNEL
1632 select CPU_SUPPORTS_64BIT_KERNEL
1633 select CPU_SUPPORTS_HIGHMEM
1634 select CPU_SUPPORTS_HUGEPAGES
1636 config CPU_LOONGSON1
1640 select CPU_HAS_PREFETCH
1641 select CPU_SUPPORTS_32BIT_KERNEL
1642 select CPU_SUPPORTS_HIGHMEM
1643 select CPU_SUPPORTS_CPUFREQ
1645 config CPU_BMIPS32_3300
1646 select SMP_UP if SMP
1649 config CPU_BMIPS4350
1651 select SYS_SUPPORTS_SMP
1652 select SYS_SUPPORTS_HOTPLUG_CPU
1654 config CPU_BMIPS4380
1656 select MIPS_L1_CACHE_SHIFT_6
1657 select SYS_SUPPORTS_SMP
1658 select SYS_SUPPORTS_HOTPLUG_CPU
1660 config CPU_BMIPS5000
1662 select MIPS_CPU_SCACHE
1663 select MIPS_L1_CACHE_SHIFT_7
1664 select SYS_SUPPORTS_SMP
1665 select SYS_SUPPORTS_HOTPLUG_CPU
1667 config SYS_HAS_CPU_LOONGSON3
1669 select CPU_SUPPORTS_CPUFREQ
1671 config SYS_HAS_CPU_LOONGSON2E
1674 config SYS_HAS_CPU_LOONGSON2F
1676 select CPU_SUPPORTS_CPUFREQ
1677 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1678 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1680 config SYS_HAS_CPU_LOONGSON1B
1683 config SYS_HAS_CPU_MIPS32_R1
1686 config SYS_HAS_CPU_MIPS32_R2
1689 config SYS_HAS_CPU_MIPS32_R3_5
1692 config SYS_HAS_CPU_MIPS32_R6
1695 config SYS_HAS_CPU_MIPS64_R1
1698 config SYS_HAS_CPU_MIPS64_R2
1701 config SYS_HAS_CPU_MIPS64_R6
1704 config SYS_HAS_CPU_R3000
1707 config SYS_HAS_CPU_TX39XX
1710 config SYS_HAS_CPU_VR41XX
1713 config SYS_HAS_CPU_R4300
1716 config SYS_HAS_CPU_R4X00
1719 config SYS_HAS_CPU_TX49XX
1722 config SYS_HAS_CPU_R5000
1725 config SYS_HAS_CPU_R5432
1728 config SYS_HAS_CPU_R5500
1731 config SYS_HAS_CPU_R6000
1734 config SYS_HAS_CPU_NEVADA
1737 config SYS_HAS_CPU_R8000
1740 config SYS_HAS_CPU_R10000
1743 config SYS_HAS_CPU_RM7000
1746 config SYS_HAS_CPU_SB1
1749 config SYS_HAS_CPU_CAVIUM_OCTEON
1752 config SYS_HAS_CPU_BMIPS
1755 config SYS_HAS_CPU_BMIPS32_3300
1757 select SYS_HAS_CPU_BMIPS
1759 config SYS_HAS_CPU_BMIPS4350
1761 select SYS_HAS_CPU_BMIPS
1763 config SYS_HAS_CPU_BMIPS4380
1765 select SYS_HAS_CPU_BMIPS
1767 config SYS_HAS_CPU_BMIPS5000
1769 select SYS_HAS_CPU_BMIPS
1771 config SYS_HAS_CPU_XLR
1774 config SYS_HAS_CPU_XLP
1777 config MIPS_MALTA_PM
1778 depends on MIPS_MALTA
1784 # CPU may reorder R->R, R->W, W->R, W->W
1785 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1787 config WEAK_ORDERING
1791 # CPU may reorder reads and writes beyond LL/SC
1792 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1794 config WEAK_REORDERING_BEYOND_LLSC
1799 # These two indicate any level of the MIPS32 and MIPS64 architecture
1803 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1807 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1810 # These two indicate the revision of the architecture, either Release 1 or Release 2
1814 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1818 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1822 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1827 config SYS_SUPPORTS_32BIT_KERNEL
1829 config SYS_SUPPORTS_64BIT_KERNEL
1831 config CPU_SUPPORTS_32BIT_KERNEL
1833 config CPU_SUPPORTS_64BIT_KERNEL
1835 config CPU_SUPPORTS_CPUFREQ
1837 config CPU_SUPPORTS_ADDRWINCFG
1839 config CPU_SUPPORTS_HUGEPAGES
1841 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1843 config MIPS_PGD_C0_CONTEXT
1845 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1848 # Set to y for ptrace access to watch registers.
1850 config HARDWARE_WATCHPOINTS
1852 default y if CPU_MIPSR1 || CPU_MIPSR2
1857 prompt "Kernel code model"
1859 You should only select this option if you have a workload that
1860 actually benefits from 64-bit processing or if your machine has
1861 large memory. You will only be presented a single option in this
1862 menu if your system does not support both 32-bit and 64-bit kernels.
1865 bool "32-bit kernel"
1866 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1869 Select this option if you want to build a 32-bit kernel.
1871 bool "64-bit kernel"
1872 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1874 Select this option if you want to build a 64-bit kernel.
1879 bool "KVM Guest Kernel"
1880 depends on BROKEN_ON_SMP
1882 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1884 config KVM_GUEST_TIMER_FREQ
1885 int "Count/Compare Timer Frequency (MHz)"
1886 depends on KVM_GUEST
1889 Set this to non-zero if building a guest kernel for KVM to skip RTC
1890 emulation when determining guest CPU Frequency. Instead, the guest's
1891 timer frequency is specified directly.
1894 prompt "Kernel page size"
1895 default PAGE_SIZE_4KB
1897 config PAGE_SIZE_4KB
1899 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
1901 This option select the standard 4kB Linux page size. On some
1902 R3000-family processors this is the only available page size. Using
1903 4kB page size will minimize memory consumption and is therefore
1904 recommended for low memory systems.
1906 config PAGE_SIZE_8KB
1908 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1910 Using 8kB page size will result in higher performance kernel at
1911 the price of higher memory consumption. This option is available
1912 only on R8000 and cnMIPS processors. Note that you will need a
1913 suitable Linux distribution to support this.
1915 config PAGE_SIZE_16KB
1917 depends on !CPU_R3000 && !CPU_TX39XX
1919 Using 16kB page size will result in higher performance kernel at
1920 the price of higher memory consumption. This option is available on
1921 all non-R3000 family processors. Note that you will need a suitable
1922 Linux distribution to support this.
1924 config PAGE_SIZE_32KB
1926 depends on CPU_CAVIUM_OCTEON
1928 Using 32kB page size will result in higher performance kernel at
1929 the price of higher memory consumption. This option is available
1930 only on cnMIPS cores. Note that you will need a suitable Linux
1931 distribution to support this.
1933 config PAGE_SIZE_64KB
1935 depends on !CPU_R3000 && !CPU_TX39XX
1937 Using 64kB page size will result in higher performance kernel at
1938 the price of higher memory consumption. This option is available on
1939 all non-R3000 family processor. Not that at the time of this
1940 writing this option is still high experimental.
1944 config FORCE_MAX_ZONEORDER
1945 int "Maximum zone order"
1946 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
1947 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
1948 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
1949 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
1950 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
1951 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
1955 The kernel memory allocator divides physically contiguous memory
1956 blocks into "zones", where each zone is a power of two number of
1957 pages. This option selects the largest power of two that the kernel
1958 keeps in the memory allocator. If you need to allocate very large
1959 blocks of physically contiguous memory, then you may need to
1960 increase this value.
1962 This config option is actually maximum order plus one. For example,
1963 a value of 11 means that the largest free memory block is 2^10 pages.
1965 The page size is not necessarily 4KB. Keep this in mind
1966 when choosing a value for this option.
1971 config IP22_CPU_SCACHE
1976 # Support for a MIPS32 / MIPS64 style S-caches
1978 config MIPS_CPU_SCACHE
1982 config R5000_CPU_SCACHE
1986 config RM7000_CPU_SCACHE
1990 config SIBYTE_DMA_PAGEOPS
1991 bool "Use DMA to clear/copy pages"
1994 Instead of using the CPU to zero and copy pages, use a Data Mover
1995 channel. These DMA channels are otherwise unused by the standard
1996 SiByte Linux port. Seems to give a small performance benefit.
1998 config CPU_HAS_PREFETCH
2001 config CPU_GENERIC_DUMP_TLB
2003 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2007 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2009 config CPU_R4K_CACHE_TLB
2011 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2014 bool "MIPS MT SMP support (1 TC on each available VPE)"
2015 depends on SYS_SUPPORTS_MULTITHREADING
2016 select CPU_MIPSR2_IRQ_VI
2017 select CPU_MIPSR2_IRQ_EI
2023 select SYS_SUPPORTS_SMP
2024 select SYS_SUPPORTS_SCHED_SMT
2025 select MIPS_PERF_SHARED_TC_COUNTERS
2027 This is a kernel model which is known as SMVP. This is supported
2028 on cores with the MT ASE and uses the available VPEs to implement
2029 virtual processors which supports SMP. This is equivalent to the
2030 Intel Hyperthreading feature. For further information go to
2031 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2037 bool "SMT (multithreading) scheduler support"
2038 depends on SYS_SUPPORTS_SCHED_SMT
2041 SMT scheduler support improves the CPU scheduler's decision making
2042 when dealing with MIPS MT enabled cores at a cost of slightly
2043 increased overhead in some places. If unsure say N here.
2045 config SYS_SUPPORTS_SCHED_SMT
2048 config SYS_SUPPORTS_MULTITHREADING
2051 config MIPS_MT_FPAFF
2052 bool "Dynamic FPU affinity for FP-intensive threads"
2054 depends on MIPS_MT_SMP
2056 config MIPS_VPE_LOADER
2057 bool "VPE loader support."
2058 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2059 select CPU_MIPSR2_IRQ_VI
2060 select CPU_MIPSR2_IRQ_EI
2063 Includes a loader for loading an elf relocatable object
2064 onto another VPE and running it.
2066 config MIPS_VPE_LOADER_CMP
2069 depends on MIPS_VPE_LOADER && MIPS_CMP
2071 config MIPS_VPE_LOADER_MT
2074 depends on MIPS_VPE_LOADER && !MIPS_CMP
2076 config MIPS_VPE_LOADER_TOM
2077 bool "Load VPE program into memory hidden from linux"
2078 depends on MIPS_VPE_LOADER
2081 The loader can use memory that is present but has been hidden from
2082 Linux using the kernel command line option "mem=xxMB". It's up to
2083 you to ensure the amount you put in the option and the space your
2084 program requires is less or equal to the amount physically present.
2086 config MIPS_VPE_APSP_API
2087 bool "Enable support for AP/SP API (RTLX)"
2088 depends on MIPS_VPE_LOADER
2091 config MIPS_VPE_APSP_API_CMP
2094 depends on MIPS_VPE_APSP_API && MIPS_CMP
2096 config MIPS_VPE_APSP_API_MT
2099 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2102 bool "MIPS CMP framework support (DEPRECATED)"
2103 depends on SYS_SUPPORTS_MIPS_CMP
2107 select SYS_SUPPORTS_SMP
2108 select WEAK_ORDERING
2111 Select this if you are using a bootloader which implements the "CMP
2112 framework" protocol (ie. YAMON) and want your kernel to make use of
2113 its ability to start secondary CPUs.
2115 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2119 bool "MIPS Coherent Processing System support"
2120 depends on SYS_SUPPORTS_MIPS_CPS
2123 select MIPS_CPS_PM if HOTPLUG_CPU
2126 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2127 select SYS_SUPPORTS_HOTPLUG_CPU
2128 select SYS_SUPPORTS_SMP
2129 select WEAK_ORDERING
2131 Select this if you wish to run an SMP kernel across multiple cores
2132 within a MIPS Coherent Processing System. When this option is
2133 enabled the kernel will probe for other cores and boot them with
2134 no external assistance. It is safe to enable this when hardware
2135 support is unavailable.
2151 config SB1_PASS_1_WORKAROUNDS
2153 depends on CPU_SB1_PASS_1
2156 config SB1_PASS_2_WORKAROUNDS
2158 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2161 config SB1_PASS_2_1_WORKAROUNDS
2163 depends on CPU_SB1 && CPU_SB1_PASS_2
2167 config ARCH_PHYS_ADDR_T_64BIT
2171 prompt "SmartMIPS or microMIPS ASE support"
2173 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2176 Select this if you want neither microMIPS nor SmartMIPS support
2178 config CPU_HAS_SMARTMIPS
2179 depends on SYS_SUPPORTS_SMARTMIPS
2182 SmartMIPS is a extension of the MIPS32 architecture aimed at
2183 increased security at both hardware and software level for
2184 smartcards. Enabling this option will allow proper use of the
2185 SmartMIPS instructions by Linux applications. However a kernel with
2186 this option will not work on a MIPS core without SmartMIPS core. If
2187 you don't know you probably don't have SmartMIPS and should say N
2190 config CPU_MICROMIPS
2191 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2194 When this option is enabled the kernel will be built using the
2200 bool "Support for the MIPS SIMD Architecture (EXPERIMENTAL)"
2201 depends on CPU_SUPPORTS_MSA
2202 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2204 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2205 and a set of SIMD instructions to operate on them. When this option
2206 is enabled the kernel will support allocating & switching MSA
2207 vector register contexts. If you know that your kernel will only be
2208 running on CPUs which do not support MSA or that your userland will
2209 not be making use of it then you may wish to say N here to reduce
2210 the size & complexity of your kernel.
2221 # Vectored interrupt mode is an R2 feature
2223 config CPU_MIPSR2_IRQ_VI
2227 # Extended interrupt mode is an R2 feature
2229 config CPU_MIPSR2_IRQ_EI
2234 depends on !CPU_R3000
2240 config CPU_DADDI_WORKAROUNDS
2243 config CPU_R4000_WORKAROUNDS
2245 select CPU_R4400_WORKAROUNDS
2247 config CPU_R4400_WORKAROUNDS
2251 # - Highmem only makes sense for the 32-bit kernel.
2252 # - The current highmem code will only work properly on physically indexed
2253 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2254 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2255 # moment we protect the user and offer the highmem option only on machines
2256 # where it's known to be safe. This will not offer highmem on a few systems
2257 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2258 # indexed CPUs but we're playing safe.
2259 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2260 # know they might have memory configurations that could make use of highmem
2264 bool "High Memory Support"
2265 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2267 config CPU_SUPPORTS_HIGHMEM
2270 config SYS_SUPPORTS_HIGHMEM
2273 config SYS_SUPPORTS_SMARTMIPS
2276 config SYS_SUPPORTS_MICROMIPS
2279 config SYS_SUPPORTS_MIPS16
2282 This option must be set if a kernel might be executed on a MIPS16-
2283 enabled CPU even if MIPS16 is not actually being used. In other
2284 words, it makes the kernel MIPS16-tolerant.
2286 config CPU_SUPPORTS_MSA
2289 config ARCH_FLATMEM_ENABLE
2291 depends on !NUMA && !CPU_LOONGSON2
2293 config ARCH_DISCONTIGMEM_ENABLE
2295 default y if SGI_IP27
2297 Say Y to support efficient handling of discontiguous physical memory,
2298 for architectures which are either NUMA (Non-Uniform Memory Access)
2299 or have huge holes in the physical address space for other reasons.
2300 See <file:Documentation/vm/numa> for more.
2302 config ARCH_SPARSEMEM_ENABLE
2304 select SPARSEMEM_STATIC
2308 depends on SYS_SUPPORTS_NUMA
2310 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2311 Access). This option improves performance on systems with more
2312 than two nodes; on two node systems it is generally better to
2313 leave it disabled; on single node systems disable this option
2316 config SYS_SUPPORTS_NUMA
2322 depends on NEED_MULTIPLE_NODES
2324 config HW_PERF_EVENTS
2325 bool "Enable hardware performance counter support for perf events"
2326 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2329 Enable hardware performance counter support for perf events. If
2330 disabled, perf events will use software events only.
2335 bool "Multi-Processing support"
2336 depends on SYS_SUPPORTS_SMP
2338 This enables support for systems with more than one CPU. If you have
2339 a system with only one CPU, say N. If you have a system with more
2340 than one CPU, say Y.
2342 If you say N here, the kernel will run on uni- and multiprocessor
2343 machines, but will use only one CPU of a multiprocessor machine. If
2344 you say Y here, the kernel will run on many, but not all,
2345 uniprocessor machines. On a uniprocessor machine, the kernel
2346 will run faster if you say N here.
2348 People using multiprocessor machines who say Y here should also say
2349 Y to "Enhanced Real Time Clock Support", below.
2351 See also the SMP-HOWTO available at
2352 <http://www.tldp.org/docs.html#howto>.
2354 If you don't know what to do here, say N.
2359 config SYS_SUPPORTS_MIPS_CMP
2362 config SYS_SUPPORTS_MIPS_CPS
2365 config SYS_SUPPORTS_SMP
2368 config NR_CPUS_DEFAULT_4
2371 config NR_CPUS_DEFAULT_8
2374 config NR_CPUS_DEFAULT_16
2377 config NR_CPUS_DEFAULT_32
2380 config NR_CPUS_DEFAULT_64
2384 int "Maximum number of CPUs (2-256)"
2387 default "4" if NR_CPUS_DEFAULT_4
2388 default "8" if NR_CPUS_DEFAULT_8
2389 default "16" if NR_CPUS_DEFAULT_16
2390 default "32" if NR_CPUS_DEFAULT_32
2391 default "64" if NR_CPUS_DEFAULT_64
2393 This allows you to specify the maximum number of CPUs which this
2394 kernel will support. The maximum supported value is 32 for 32-bit
2395 kernel and 64 for 64-bit kernels; the minimum value which makes
2396 sense is 1 for Qemu (useful only for kernel debugging purposes)
2397 and 2 for all others.
2399 This is purely to save memory - each supported CPU adds
2400 approximately eight kilobytes to the kernel image. For best
2401 performance should round up your number of processors to the next
2404 config MIPS_PERF_SHARED_TC_COUNTERS
2408 # Timer Interrupt Frequency Configuration
2412 prompt "Timer frequency"
2415 Allows the configuration of the timer frequency.
2418 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2421 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2424 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2427 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2430 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2433 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2436 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2440 config SYS_SUPPORTS_48HZ
2443 config SYS_SUPPORTS_100HZ
2446 config SYS_SUPPORTS_128HZ
2449 config SYS_SUPPORTS_250HZ
2452 config SYS_SUPPORTS_256HZ
2455 config SYS_SUPPORTS_1000HZ
2458 config SYS_SUPPORTS_1024HZ
2461 config SYS_SUPPORTS_ARBIT_HZ
2463 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2464 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2465 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2466 !SYS_SUPPORTS_1024HZ
2471 default 100 if HZ_100
2472 default 128 if HZ_128
2473 default 250 if HZ_250
2474 default 256 if HZ_256
2475 default 1000 if HZ_1000
2476 default 1024 if HZ_1024
2478 source "kernel/Kconfig.preempt"
2481 bool "Kexec system call"
2483 kexec is a system call that implements the ability to shutdown your
2484 current kernel, and to start another kernel. It is like a reboot
2485 but it is independent of the system firmware. And like a reboot
2486 you can start any kernel with it, not just Linux.
2488 The name comes from the similarity to the exec system call.
2490 It is an ongoing process to be certain the hardware in a machine
2491 is properly shutdown, so do not be surprised if this code does not
2492 initially work for you. As of this writing the exact hardware
2493 interface is strongly in flux, so no good recommendation can be
2497 bool "Kernel crash dumps"
2499 Generate crash dump after being started by kexec.
2500 This should be normally only set in special crash dump kernels
2501 which are loaded in the main kernel with kexec-tools into
2502 a specially reserved region and then later executed after
2503 a crash by kdump/kexec. The crash dump kernel must be compiled
2504 to a memory address not used by the main kernel or firmware using
2507 config PHYSICAL_START
2508 hex "Physical address where the kernel is loaded"
2509 default "0xffffffff84000000" if 64BIT
2510 default "0x84000000" if 32BIT
2511 depends on CRASH_DUMP
2513 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2514 If you plan to use kernel for capturing the crash dump change
2515 this value to start of the reserved region (the "X" value as
2516 specified in the "crashkernel=YM@XM" command line boot parameter
2517 passed to the panic-ed kernel).
2520 bool "Enable seccomp to safely compute untrusted bytecode"
2524 This kernel feature is useful for number crunching applications
2525 that may need to compute untrusted bytecode during their
2526 execution. By using pipes or other transports made available to
2527 the process as file descriptors supporting the read/write
2528 syscalls, it's possible to isolate those applications in
2529 their own address space using seccomp. Once seccomp is
2530 enabled via /proc/<pid>/seccomp, it cannot be disabled
2531 and the task is only allowed to execute a few safe syscalls
2532 defined by each seccomp mode.
2534 If unsure, say Y. Only embedded should say N here.
2536 config MIPS_O32_FP64_SUPPORT
2537 bool "Support for O32 binaries using 64-bit FP (EXPERIMENTAL)"
2538 depends on 32BIT || MIPS32_O32
2540 When this is enabled, the kernel will support use of 64-bit floating
2541 point registers with binaries using the O32 ABI along with the
2542 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2543 32-bit MIPS systems this support is at the cost of increasing the
2544 size and complexity of the compiled FPU emulator. Thus if you are
2545 running a MIPS32 system and know that none of your userland binaries
2546 will require 64-bit floating point, you may wish to reduce the size
2547 of your kernel & potentially improve FP emulation performance by
2550 Although binutils currently supports use of this flag the details
2551 concerning its effect upon the O32 ABI in userland are still being
2552 worked on. In order to avoid userland becoming dependant upon current
2553 behaviour before the details have been finalised, this option should
2554 be considered experimental and only enabled by those working upon
2562 select OF_EARLY_FLATTREE
2570 config LOCKDEP_SUPPORT
2574 config STACKTRACE_SUPPORT
2578 source "init/Kconfig"
2580 source "kernel/Kconfig.freezer"
2582 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2590 bool "Support for PCI controller"
2591 depends on HW_HAS_PCI
2593 select NO_GENERIC_PCI_IOPORT_MAP
2595 Find out whether you have a PCI motherboard. PCI is the name of a
2596 bus system, i.e. the way the CPU talks to the other stuff inside
2597 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2601 bool "Support for HT-linked PCI"
2603 depends on CPU_LOONGSON3
2607 Loongson family machines use Hyper-Transport bus for inter-core
2608 connection and device connection. The PCI bus is a subordinate
2609 linked at HT. Choose Y for Loongson-3 based machines.
2614 source "drivers/pci/Kconfig"
2616 source "drivers/pci/pcie/Kconfig"
2619 # ISA support is now enabled via select. Too many systems still have the one
2620 # or other ISA chip on the board that users don't know about so don't expect
2621 # users to choose the right thing ...
2628 depends on HW_HAS_EISA
2630 select GENERIC_ISA_DMA
2632 The Extended Industry Standard Architecture (EISA) bus was
2633 developed as an open alternative to the IBM MicroChannel bus.
2635 The EISA bus provided some of the features of the IBM MicroChannel
2636 bus while maintaining backward compatibility with cards made for
2637 the older ISA bus. The EISA bus saw limited use between 1988 and
2638 1995 when it was made obsolete by the PCI bus.
2640 Say Y here if you are building a kernel for an EISA-based machine.
2644 source "drivers/eisa/Kconfig"
2647 bool "TURBOchannel support"
2648 depends on MACH_DECSTATION
2650 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2651 processors. TURBOchannel programming specifications are available
2653 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2655 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2656 Linux driver support status is documented at:
2657 <http://www.linux-mips.org/wiki/DECstation>
2667 select MIPS_EXTERNAL_TIMER
2675 source "drivers/pcmcia/Kconfig"
2677 source "drivers/pci/hotplug/Kconfig"
2680 tristate "RapidIO support"
2684 If you say Y here, the kernel will include drivers and
2685 infrastructure code to support RapidIO interconnect devices.
2687 source "drivers/rapidio/Kconfig"
2691 menu "Executable file formats"
2693 source "fs/Kconfig.binfmt"
2698 config MIPS32_COMPAT
2699 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2702 Select this option if you want Linux/MIPS 32-bit binary
2703 compatibility. Since all software available for Linux/MIPS is
2704 currently 32-bit you should say Y here.
2708 depends on MIPS32_COMPAT
2709 select ARCH_WANT_OLD_COMPAT_IPC
2712 config SYSVIPC_COMPAT
2714 depends on COMPAT && SYSVIPC
2718 bool "Kernel support for o32 binaries"
2719 depends on MIPS32_COMPAT
2721 Select this option if you want to run o32 binaries. These are pure
2722 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2723 existing binaries are in this format.
2728 bool "Kernel support for n32 binaries"
2729 depends on MIPS32_COMPAT
2731 Select this option if you want to run n32 binaries. These are
2732 64-bit binaries using 32-bit quantities for addressing and certain
2733 data that would normally be 64-bit. They are used in special
2740 default y if MIPS32_O32 || MIPS32_N32
2744 menu "Power management options"
2746 config ARCH_HIBERNATION_POSSIBLE
2748 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2750 config ARCH_SUSPEND_POSSIBLE
2752 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2754 source "kernel/power/Kconfig"
2758 config MIPS_EXTERNAL_TIMER
2761 menu "CPU Power Management"
2763 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2764 source "drivers/cpufreq/Kconfig"
2767 source "drivers/cpuidle/Kconfig"
2771 source "net/Kconfig"
2773 source "drivers/Kconfig"
2775 source "drivers/firmware/Kconfig"
2779 source "arch/mips/Kconfig.debug"
2781 source "security/Kconfig"
2783 source "crypto/Kconfig"
2785 source "lib/Kconfig"
2787 source "arch/mips/kvm/Kconfig"