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
1040 config GENERIC_ISA_DMA
1042 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1045 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1047 select GENERIC_ISA_DMA
1052 config HOLES_IN_ZONE
1056 # Endianness selection. Sufficiently obscure so many users don't know what to
1057 # answer,so we try hard to limit the available choices. Also the use of a
1058 # choice statement should be more obvious to the user.
1061 prompt "Endianness selection"
1063 Some MIPS machines can be configured for either little or big endian
1064 byte order. These modes require different kernels and a different
1065 Linux distribution. In general there is one preferred byteorder for a
1066 particular system but some systems are just as commonly used in the
1067 one or the other endianness.
1069 config CPU_BIG_ENDIAN
1071 depends on SYS_SUPPORTS_BIG_ENDIAN
1073 config CPU_LITTLE_ENDIAN
1074 bool "Little endian"
1075 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1082 config SYS_SUPPORTS_APM_EMULATION
1085 config SYS_SUPPORTS_BIG_ENDIAN
1088 config SYS_SUPPORTS_LITTLE_ENDIAN
1091 config SYS_SUPPORTS_HUGETLBFS
1093 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1096 config MIPS_HUGE_TLB_SUPPORT
1097 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1118 config PCI_GT64XXX_PCI0
1121 config NO_EXCEPT_FILL
1128 select DMA_NONCOHERENT
1130 select SWAP_IO_SPACE
1131 select SYS_HAS_CPU_R5500
1132 select SYS_SUPPORTS_32BIT_KERNEL
1133 select SYS_SUPPORTS_64BIT_KERNEL
1134 select SYS_SUPPORTS_BIG_ENDIAN
1141 select DMA_NONCOHERENT
1142 select SYS_HAS_CPU_MIPS32_R2
1143 select SYS_SUPPORTS_32BIT_KERNEL
1144 select SYS_SUPPORTS_LITTLE_ENDIAN
1145 select SYS_SUPPORTS_BIG_ENDIAN
1146 select SYS_SUPPORTS_MIPS16
1147 select CPU_MIPSR2_IRQ_VI
1153 config SWAP_IO_SPACE
1156 config SGI_HAS_INDYDOG
1168 config SGI_HAS_ZILOG
1171 config SGI_HAS_I8042
1174 config DEFAULT_SGI_PARTITION
1186 config MIPS_L1_CACHE_SHIFT_4
1189 config MIPS_L1_CACHE_SHIFT_5
1192 config MIPS_L1_CACHE_SHIFT_6
1195 config MIPS_L1_CACHE_SHIFT_7
1198 config MIPS_L1_CACHE_SHIFT
1200 default "4" if MIPS_L1_CACHE_SHIFT_4
1201 default "5" if MIPS_L1_CACHE_SHIFT_5
1202 default "6" if MIPS_L1_CACHE_SHIFT_6
1203 default "7" if MIPS_L1_CACHE_SHIFT_7
1206 config HAVE_STD_PC_SERIAL_PORT
1210 bool "ARC console support"
1211 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1215 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1220 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1229 menu "CPU selection"
1235 config CPU_LOONGSON3
1236 bool "Loongson 3 CPU"
1237 depends on SYS_HAS_CPU_LOONGSON3
1238 select CPU_SUPPORTS_64BIT_KERNEL
1239 select CPU_SUPPORTS_HIGHMEM
1240 select CPU_SUPPORTS_HUGEPAGES
1241 select WEAK_ORDERING
1242 select WEAK_REORDERING_BEYOND_LLSC
1244 The Loongson 3 processor implements the MIPS64R2 instruction
1245 set with many extensions.
1247 config CPU_LOONGSON2E
1249 depends on SYS_HAS_CPU_LOONGSON2E
1250 select CPU_LOONGSON2
1252 The Loongson 2E processor implements the MIPS III instruction set
1253 with many extensions.
1255 It has an internal FPGA northbridge, which is compatible to
1258 config CPU_LOONGSON2F
1260 depends on SYS_HAS_CPU_LOONGSON2F
1261 select CPU_LOONGSON2
1262 select ARCH_REQUIRE_GPIOLIB
1264 The Loongson 2F processor implements the MIPS III instruction set
1265 with many extensions.
1267 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1268 have a similar programming interface with FPGA northbridge used in
1271 config CPU_LOONGSON1B
1273 depends on SYS_HAS_CPU_LOONGSON1B
1274 select CPU_LOONGSON1
1276 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1277 release 2 instruction set.
1279 config CPU_MIPS32_R1
1280 bool "MIPS32 Release 1"
1281 depends on SYS_HAS_CPU_MIPS32_R1
1282 select CPU_HAS_PREFETCH
1283 select CPU_SUPPORTS_32BIT_KERNEL
1284 select CPU_SUPPORTS_HIGHMEM
1286 Choose this option to build a kernel for release 1 or later of the
1287 MIPS32 architecture. Most modern embedded systems with a 32-bit
1288 MIPS processor are based on a MIPS32 processor. If you know the
1289 specific type of processor in your system, choose those that one
1290 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1291 Release 2 of the MIPS32 architecture is available since several
1292 years so chances are you even have a MIPS32 Release 2 processor
1293 in which case you should choose CPU_MIPS32_R2 instead for better
1296 config CPU_MIPS32_R2
1297 bool "MIPS32 Release 2"
1298 depends on SYS_HAS_CPU_MIPS32_R2
1299 select CPU_HAS_PREFETCH
1300 select CPU_SUPPORTS_32BIT_KERNEL
1301 select CPU_SUPPORTS_HIGHMEM
1302 select CPU_SUPPORTS_MSA
1305 Choose this option to build a kernel for release 2 or later of the
1306 MIPS32 architecture. Most modern embedded systems with a 32-bit
1307 MIPS processor are based on a MIPS32 processor. If you know the
1308 specific type of processor in your system, choose those that one
1309 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1311 config CPU_MIPS32_R6
1312 bool "MIPS32 Release 6 (EXPERIMENTAL)"
1313 depends on SYS_HAS_CPU_MIPS32_R6
1314 select CPU_HAS_PREFETCH
1315 select CPU_SUPPORTS_32BIT_KERNEL
1316 select CPU_SUPPORTS_HIGHMEM
1317 select CPU_SUPPORTS_MSA
1320 select MIPS_O32_FP64_SUPPORT
1322 Choose this option to build a kernel for release 6 or later of the
1323 MIPS32 architecture. New MIPS processors, starting with the Warrior
1324 family, are based on a MIPS32r6 processor. If you own an older
1325 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1327 config CPU_MIPS64_R1
1328 bool "MIPS64 Release 1"
1329 depends on SYS_HAS_CPU_MIPS64_R1
1330 select CPU_HAS_PREFETCH
1331 select CPU_SUPPORTS_32BIT_KERNEL
1332 select CPU_SUPPORTS_64BIT_KERNEL
1333 select CPU_SUPPORTS_HIGHMEM
1334 select CPU_SUPPORTS_HUGEPAGES
1336 Choose this option to build a kernel for release 1 or later of the
1337 MIPS64 architecture. Many modern embedded systems with a 64-bit
1338 MIPS processor are based on a MIPS64 processor. If you know the
1339 specific type of processor in your system, choose those that one
1340 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1341 Release 2 of the MIPS64 architecture is available since several
1342 years so chances are you even have a MIPS64 Release 2 processor
1343 in which case you should choose CPU_MIPS64_R2 instead for better
1346 config CPU_MIPS64_R2
1347 bool "MIPS64 Release 2"
1348 depends on SYS_HAS_CPU_MIPS64_R2
1349 select CPU_HAS_PREFETCH
1350 select CPU_SUPPORTS_32BIT_KERNEL
1351 select CPU_SUPPORTS_64BIT_KERNEL
1352 select CPU_SUPPORTS_HIGHMEM
1353 select CPU_SUPPORTS_HUGEPAGES
1354 select CPU_SUPPORTS_MSA
1356 Choose this option to build a kernel for release 2 or later of the
1357 MIPS64 architecture. Many modern embedded systems with a 64-bit
1358 MIPS processor are based on a MIPS64 processor. If you know the
1359 specific type of processor in your system, choose those that one
1360 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1362 config CPU_MIPS64_R6
1363 bool "MIPS64 Release 6 (EXPERIMENTAL)"
1364 depends on SYS_HAS_CPU_MIPS64_R6
1365 select CPU_HAS_PREFETCH
1366 select CPU_SUPPORTS_32BIT_KERNEL
1367 select CPU_SUPPORTS_64BIT_KERNEL
1368 select CPU_SUPPORTS_HIGHMEM
1369 select CPU_SUPPORTS_MSA
1372 Choose this option to build a kernel for release 6 or later of the
1373 MIPS64 architecture. New MIPS processors, starting with the Warrior
1374 family, are based on a MIPS64r6 processor. If you own an older
1375 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1379 depends on SYS_HAS_CPU_R3000
1381 select CPU_SUPPORTS_32BIT_KERNEL
1382 select CPU_SUPPORTS_HIGHMEM
1384 Please make sure to pick the right CPU type. Linux/MIPS is not
1385 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1386 *not* work on R4000 machines and vice versa. However, since most
1387 of the supported machines have an R4000 (or similar) CPU, R4x00
1388 might be a safe bet. If the resulting kernel does not work,
1389 try to recompile with R3000.
1393 depends on SYS_HAS_CPU_TX39XX
1394 select CPU_SUPPORTS_32BIT_KERNEL
1398 depends on SYS_HAS_CPU_VR41XX
1399 select CPU_SUPPORTS_32BIT_KERNEL
1400 select CPU_SUPPORTS_64BIT_KERNEL
1402 The options selects support for the NEC VR4100 series of processors.
1403 Only choose this option if you have one of these processors as a
1404 kernel built with this option will not run on any other type of
1405 processor or vice versa.
1409 depends on SYS_HAS_CPU_R4300
1410 select CPU_SUPPORTS_32BIT_KERNEL
1411 select CPU_SUPPORTS_64BIT_KERNEL
1413 MIPS Technologies R4300-series processors.
1417 depends on SYS_HAS_CPU_R4X00
1418 select CPU_SUPPORTS_32BIT_KERNEL
1419 select CPU_SUPPORTS_64BIT_KERNEL
1420 select CPU_SUPPORTS_HUGEPAGES
1422 MIPS Technologies R4000-series processors other than 4300, including
1423 the R4000, R4400, R4600, and 4700.
1427 depends on SYS_HAS_CPU_TX49XX
1428 select CPU_HAS_PREFETCH
1429 select CPU_SUPPORTS_32BIT_KERNEL
1430 select CPU_SUPPORTS_64BIT_KERNEL
1431 select CPU_SUPPORTS_HUGEPAGES
1435 depends on SYS_HAS_CPU_R5000
1436 select CPU_SUPPORTS_32BIT_KERNEL
1437 select CPU_SUPPORTS_64BIT_KERNEL
1438 select CPU_SUPPORTS_HUGEPAGES
1440 MIPS Technologies R5000-series processors other than the Nevada.
1444 depends on SYS_HAS_CPU_R5432
1445 select CPU_SUPPORTS_32BIT_KERNEL
1446 select CPU_SUPPORTS_64BIT_KERNEL
1447 select CPU_SUPPORTS_HUGEPAGES
1451 depends on SYS_HAS_CPU_R5500
1452 select CPU_SUPPORTS_32BIT_KERNEL
1453 select CPU_SUPPORTS_64BIT_KERNEL
1454 select CPU_SUPPORTS_HUGEPAGES
1456 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1461 depends on SYS_HAS_CPU_R6000
1462 select CPU_SUPPORTS_32BIT_KERNEL
1464 MIPS Technologies R6000 and R6000A series processors. Note these
1465 processors are extremely rare and the support for them is incomplete.
1469 depends on SYS_HAS_CPU_NEVADA
1470 select CPU_SUPPORTS_32BIT_KERNEL
1471 select CPU_SUPPORTS_64BIT_KERNEL
1472 select CPU_SUPPORTS_HUGEPAGES
1474 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1478 depends on SYS_HAS_CPU_R8000
1479 select CPU_HAS_PREFETCH
1480 select CPU_SUPPORTS_64BIT_KERNEL
1482 MIPS Technologies R8000 processors. Note these processors are
1483 uncommon and the support for them is incomplete.
1487 depends on SYS_HAS_CPU_R10000
1488 select CPU_HAS_PREFETCH
1489 select CPU_SUPPORTS_32BIT_KERNEL
1490 select CPU_SUPPORTS_64BIT_KERNEL
1491 select CPU_SUPPORTS_HIGHMEM
1492 select CPU_SUPPORTS_HUGEPAGES
1494 MIPS Technologies R10000-series processors.
1498 depends on SYS_HAS_CPU_RM7000
1499 select CPU_HAS_PREFETCH
1500 select CPU_SUPPORTS_32BIT_KERNEL
1501 select CPU_SUPPORTS_64BIT_KERNEL
1502 select CPU_SUPPORTS_HIGHMEM
1503 select CPU_SUPPORTS_HUGEPAGES
1507 depends on SYS_HAS_CPU_SB1
1508 select CPU_SUPPORTS_32BIT_KERNEL
1509 select CPU_SUPPORTS_64BIT_KERNEL
1510 select CPU_SUPPORTS_HIGHMEM
1511 select CPU_SUPPORTS_HUGEPAGES
1512 select WEAK_ORDERING
1514 config CPU_CAVIUM_OCTEON
1515 bool "Cavium Octeon processor"
1516 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1517 select CPU_HAS_PREFETCH
1518 select CPU_SUPPORTS_64BIT_KERNEL
1519 select WEAK_ORDERING
1520 select CPU_SUPPORTS_HIGHMEM
1521 select CPU_SUPPORTS_HUGEPAGES
1522 select USB_EHCI_BIG_ENDIAN_MMIO
1523 select MIPS_L1_CACHE_SHIFT_7
1525 The Cavium Octeon processor is a highly integrated chip containing
1526 many ethernet hardware widgets for networking tasks. The processor
1527 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1528 Full details can be found at http://www.caviumnetworks.com.
1531 bool "Broadcom BMIPS"
1532 depends on SYS_HAS_CPU_BMIPS
1534 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1535 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1536 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1537 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1538 select CPU_SUPPORTS_32BIT_KERNEL
1539 select DMA_NONCOHERENT
1541 select SWAP_IO_SPACE
1542 select WEAK_ORDERING
1543 select CPU_SUPPORTS_HIGHMEM
1544 select CPU_HAS_PREFETCH
1546 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1549 bool "Netlogic XLR SoC"
1550 depends on SYS_HAS_CPU_XLR
1551 select CPU_SUPPORTS_32BIT_KERNEL
1552 select CPU_SUPPORTS_64BIT_KERNEL
1553 select CPU_SUPPORTS_HIGHMEM
1554 select CPU_SUPPORTS_HUGEPAGES
1555 select WEAK_ORDERING
1556 select WEAK_REORDERING_BEYOND_LLSC
1558 Netlogic Microsystems XLR/XLS processors.
1561 bool "Netlogic XLP SoC"
1562 depends on SYS_HAS_CPU_XLP
1563 select CPU_SUPPORTS_32BIT_KERNEL
1564 select CPU_SUPPORTS_64BIT_KERNEL
1565 select CPU_SUPPORTS_HIGHMEM
1566 select WEAK_ORDERING
1567 select WEAK_REORDERING_BEYOND_LLSC
1568 select CPU_HAS_PREFETCH
1571 Netlogic Microsystems XLP processors.
1574 config CPU_MIPS32_3_5_FEATURES
1575 bool "MIPS32 Release 3.5 Features"
1576 depends on SYS_HAS_CPU_MIPS32_R3_5
1577 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1579 Choose this option to build a kernel for release 2 or later of the
1580 MIPS32 architecture including features from the 3.5 release such as
1581 support for Enhanced Virtual Addressing (EVA).
1583 config CPU_MIPS32_3_5_EVA
1584 bool "Enhanced Virtual Addressing (EVA)"
1585 depends on CPU_MIPS32_3_5_FEATURES
1589 Choose this option if you want to enable the Enhanced Virtual
1590 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1591 One of its primary benefits is an increase in the maximum size
1592 of lowmem (up to 3GB). If unsure, say 'N' here.
1595 config CPU_NOP_WORKAROUNDS
1598 config CPU_JUMP_WORKAROUNDS
1601 config CPU_LOONGSON2F_WORKAROUNDS
1602 bool "Loongson 2F Workarounds"
1604 select CPU_NOP_WORKAROUNDS
1605 select CPU_JUMP_WORKAROUNDS
1607 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1608 require workarounds. Without workarounds the system may hang
1609 unexpectedly. For more information please refer to the gas
1610 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1612 Loongson 2F03 and later have fixed these issues and no workarounds
1613 are needed. The workarounds have no significant side effect on them
1614 but may decrease the performance of the system so this option should
1615 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1618 If unsure, please say Y.
1619 endif # CPU_LOONGSON2F
1621 config SYS_SUPPORTS_ZBOOT
1623 select HAVE_KERNEL_GZIP
1624 select HAVE_KERNEL_BZIP2
1625 select HAVE_KERNEL_LZ4
1626 select HAVE_KERNEL_LZMA
1627 select HAVE_KERNEL_LZO
1628 select HAVE_KERNEL_XZ
1630 config SYS_SUPPORTS_ZBOOT_UART16550
1632 select SYS_SUPPORTS_ZBOOT
1634 config CPU_LOONGSON2
1636 select CPU_SUPPORTS_32BIT_KERNEL
1637 select CPU_SUPPORTS_64BIT_KERNEL
1638 select CPU_SUPPORTS_HIGHMEM
1639 select CPU_SUPPORTS_HUGEPAGES
1641 config CPU_LOONGSON1
1645 select CPU_HAS_PREFETCH
1646 select CPU_SUPPORTS_32BIT_KERNEL
1647 select CPU_SUPPORTS_HIGHMEM
1648 select CPU_SUPPORTS_CPUFREQ
1650 config CPU_BMIPS32_3300
1651 select SMP_UP if SMP
1654 config CPU_BMIPS4350
1656 select SYS_SUPPORTS_SMP
1657 select SYS_SUPPORTS_HOTPLUG_CPU
1659 config CPU_BMIPS4380
1661 select MIPS_L1_CACHE_SHIFT_6
1662 select SYS_SUPPORTS_SMP
1663 select SYS_SUPPORTS_HOTPLUG_CPU
1665 config CPU_BMIPS5000
1667 select MIPS_CPU_SCACHE
1668 select MIPS_L1_CACHE_SHIFT_7
1669 select SYS_SUPPORTS_SMP
1670 select SYS_SUPPORTS_HOTPLUG_CPU
1672 config SYS_HAS_CPU_LOONGSON3
1674 select CPU_SUPPORTS_CPUFREQ
1676 config SYS_HAS_CPU_LOONGSON2E
1679 config SYS_HAS_CPU_LOONGSON2F
1681 select CPU_SUPPORTS_CPUFREQ
1682 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1683 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1685 config SYS_HAS_CPU_LOONGSON1B
1688 config SYS_HAS_CPU_MIPS32_R1
1691 config SYS_HAS_CPU_MIPS32_R2
1694 config SYS_HAS_CPU_MIPS32_R3_5
1697 config SYS_HAS_CPU_MIPS32_R6
1700 config SYS_HAS_CPU_MIPS64_R1
1703 config SYS_HAS_CPU_MIPS64_R2
1706 config SYS_HAS_CPU_MIPS64_R6
1709 config SYS_HAS_CPU_R3000
1712 config SYS_HAS_CPU_TX39XX
1715 config SYS_HAS_CPU_VR41XX
1718 config SYS_HAS_CPU_R4300
1721 config SYS_HAS_CPU_R4X00
1724 config SYS_HAS_CPU_TX49XX
1727 config SYS_HAS_CPU_R5000
1730 config SYS_HAS_CPU_R5432
1733 config SYS_HAS_CPU_R5500
1736 config SYS_HAS_CPU_R6000
1739 config SYS_HAS_CPU_NEVADA
1742 config SYS_HAS_CPU_R8000
1745 config SYS_HAS_CPU_R10000
1748 config SYS_HAS_CPU_RM7000
1751 config SYS_HAS_CPU_SB1
1754 config SYS_HAS_CPU_CAVIUM_OCTEON
1757 config SYS_HAS_CPU_BMIPS
1760 config SYS_HAS_CPU_BMIPS32_3300
1762 select SYS_HAS_CPU_BMIPS
1764 config SYS_HAS_CPU_BMIPS4350
1766 select SYS_HAS_CPU_BMIPS
1768 config SYS_HAS_CPU_BMIPS4380
1770 select SYS_HAS_CPU_BMIPS
1772 config SYS_HAS_CPU_BMIPS5000
1774 select SYS_HAS_CPU_BMIPS
1776 config SYS_HAS_CPU_XLR
1779 config SYS_HAS_CPU_XLP
1782 config MIPS_MALTA_PM
1783 depends on MIPS_MALTA
1789 # CPU may reorder R->R, R->W, W->R, W->W
1790 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1792 config WEAK_ORDERING
1796 # CPU may reorder reads and writes beyond LL/SC
1797 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1799 config WEAK_REORDERING_BEYOND_LLSC
1804 # These two indicate any level of the MIPS32 and MIPS64 architecture
1808 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1812 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1815 # These two indicate the revision of the architecture, either Release 1 or Release 2
1819 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1823 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1827 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1832 config SYS_SUPPORTS_32BIT_KERNEL
1834 config SYS_SUPPORTS_64BIT_KERNEL
1836 config CPU_SUPPORTS_32BIT_KERNEL
1838 config CPU_SUPPORTS_64BIT_KERNEL
1840 config CPU_SUPPORTS_CPUFREQ
1842 config CPU_SUPPORTS_ADDRWINCFG
1844 config CPU_SUPPORTS_HUGEPAGES
1846 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1848 config MIPS_PGD_C0_CONTEXT
1850 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1853 # Set to y for ptrace access to watch registers.
1855 config HARDWARE_WATCHPOINTS
1857 default y if CPU_MIPSR1 || CPU_MIPSR2
1862 prompt "Kernel code model"
1864 You should only select this option if you have a workload that
1865 actually benefits from 64-bit processing or if your machine has
1866 large memory. You will only be presented a single option in this
1867 menu if your system does not support both 32-bit and 64-bit kernels.
1870 bool "32-bit kernel"
1871 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1874 Select this option if you want to build a 32-bit kernel.
1876 bool "64-bit kernel"
1877 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1879 Select this option if you want to build a 64-bit kernel.
1884 bool "KVM Guest Kernel"
1885 depends on BROKEN_ON_SMP
1887 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1889 config KVM_GUEST_TIMER_FREQ
1890 int "Count/Compare Timer Frequency (MHz)"
1891 depends on KVM_GUEST
1894 Set this to non-zero if building a guest kernel for KVM to skip RTC
1895 emulation when determining guest CPU Frequency. Instead, the guest's
1896 timer frequency is specified directly.
1899 prompt "Kernel page size"
1900 default PAGE_SIZE_4KB
1902 config PAGE_SIZE_4KB
1904 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
1906 This option select the standard 4kB Linux page size. On some
1907 R3000-family processors this is the only available page size. Using
1908 4kB page size will minimize memory consumption and is therefore
1909 recommended for low memory systems.
1911 config PAGE_SIZE_8KB
1913 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1915 Using 8kB page size will result in higher performance kernel at
1916 the price of higher memory consumption. This option is available
1917 only on R8000 and cnMIPS processors. Note that you will need a
1918 suitable Linux distribution to support this.
1920 config PAGE_SIZE_16KB
1922 depends on !CPU_R3000 && !CPU_TX39XX
1924 Using 16kB page size will result in higher performance kernel at
1925 the price of higher memory consumption. This option is available on
1926 all non-R3000 family processors. Note that you will need a suitable
1927 Linux distribution to support this.
1929 config PAGE_SIZE_32KB
1931 depends on CPU_CAVIUM_OCTEON
1933 Using 32kB page size will result in higher performance kernel at
1934 the price of higher memory consumption. This option is available
1935 only on cnMIPS cores. Note that you will need a suitable Linux
1936 distribution to support this.
1938 config PAGE_SIZE_64KB
1940 depends on !CPU_R3000 && !CPU_TX39XX
1942 Using 64kB page size will result in higher performance kernel at
1943 the price of higher memory consumption. This option is available on
1944 all non-R3000 family processor. Not that at the time of this
1945 writing this option is still high experimental.
1949 config FORCE_MAX_ZONEORDER
1950 int "Maximum zone order"
1951 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
1952 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
1953 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
1954 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
1955 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
1956 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
1960 The kernel memory allocator divides physically contiguous memory
1961 blocks into "zones", where each zone is a power of two number of
1962 pages. This option selects the largest power of two that the kernel
1963 keeps in the memory allocator. If you need to allocate very large
1964 blocks of physically contiguous memory, then you may need to
1965 increase this value.
1967 This config option is actually maximum order plus one. For example,
1968 a value of 11 means that the largest free memory block is 2^10 pages.
1970 The page size is not necessarily 4KB. Keep this in mind
1971 when choosing a value for this option.
1976 config IP22_CPU_SCACHE
1981 # Support for a MIPS32 / MIPS64 style S-caches
1983 config MIPS_CPU_SCACHE
1987 config R5000_CPU_SCACHE
1991 config RM7000_CPU_SCACHE
1995 config SIBYTE_DMA_PAGEOPS
1996 bool "Use DMA to clear/copy pages"
1999 Instead of using the CPU to zero and copy pages, use a Data Mover
2000 channel. These DMA channels are otherwise unused by the standard
2001 SiByte Linux port. Seems to give a small performance benefit.
2003 config CPU_HAS_PREFETCH
2006 config CPU_GENERIC_DUMP_TLB
2008 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2012 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2014 config CPU_R4K_CACHE_TLB
2016 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2019 bool "MIPS MT SMP support (1 TC on each available VPE)"
2020 depends on SYS_SUPPORTS_MULTITHREADING
2021 select CPU_MIPSR2_IRQ_VI
2022 select CPU_MIPSR2_IRQ_EI
2028 select SYS_SUPPORTS_SMP
2029 select SYS_SUPPORTS_SCHED_SMT
2030 select MIPS_PERF_SHARED_TC_COUNTERS
2032 This is a kernel model which is known as SMVP. This is supported
2033 on cores with the MT ASE and uses the available VPEs to implement
2034 virtual processors which supports SMP. This is equivalent to the
2035 Intel Hyperthreading feature. For further information go to
2036 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2042 bool "SMT (multithreading) scheduler support"
2043 depends on SYS_SUPPORTS_SCHED_SMT
2046 SMT scheduler support improves the CPU scheduler's decision making
2047 when dealing with MIPS MT enabled cores at a cost of slightly
2048 increased overhead in some places. If unsure say N here.
2050 config SYS_SUPPORTS_SCHED_SMT
2053 config SYS_SUPPORTS_MULTITHREADING
2056 config MIPS_MT_FPAFF
2057 bool "Dynamic FPU affinity for FP-intensive threads"
2059 depends on MIPS_MT_SMP
2061 config MIPS_VPE_LOADER
2062 bool "VPE loader support."
2063 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2064 select CPU_MIPSR2_IRQ_VI
2065 select CPU_MIPSR2_IRQ_EI
2068 Includes a loader for loading an elf relocatable object
2069 onto another VPE and running it.
2071 config MIPS_VPE_LOADER_CMP
2074 depends on MIPS_VPE_LOADER && MIPS_CMP
2076 config MIPS_VPE_LOADER_MT
2079 depends on MIPS_VPE_LOADER && !MIPS_CMP
2081 config MIPS_VPE_LOADER_TOM
2082 bool "Load VPE program into memory hidden from linux"
2083 depends on MIPS_VPE_LOADER
2086 The loader can use memory that is present but has been hidden from
2087 Linux using the kernel command line option "mem=xxMB". It's up to
2088 you to ensure the amount you put in the option and the space your
2089 program requires is less or equal to the amount physically present.
2091 config MIPS_VPE_APSP_API
2092 bool "Enable support for AP/SP API (RTLX)"
2093 depends on MIPS_VPE_LOADER
2096 config MIPS_VPE_APSP_API_CMP
2099 depends on MIPS_VPE_APSP_API && MIPS_CMP
2101 config MIPS_VPE_APSP_API_MT
2104 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2107 bool "MIPS CMP framework support (DEPRECATED)"
2108 depends on SYS_SUPPORTS_MIPS_CMP
2112 select SYS_SUPPORTS_SMP
2113 select WEAK_ORDERING
2116 Select this if you are using a bootloader which implements the "CMP
2117 framework" protocol (ie. YAMON) and want your kernel to make use of
2118 its ability to start secondary CPUs.
2120 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2124 bool "MIPS Coherent Processing System support"
2125 depends on SYS_SUPPORTS_MIPS_CPS
2128 select MIPS_CPS_PM if HOTPLUG_CPU
2131 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2132 select SYS_SUPPORTS_HOTPLUG_CPU
2133 select SYS_SUPPORTS_SMP
2134 select WEAK_ORDERING
2136 Select this if you wish to run an SMP kernel across multiple cores
2137 within a MIPS Coherent Processing System. When this option is
2138 enabled the kernel will probe for other cores and boot them with
2139 no external assistance. It is safe to enable this when hardware
2140 support is unavailable.
2156 config SB1_PASS_1_WORKAROUNDS
2158 depends on CPU_SB1_PASS_1
2161 config SB1_PASS_2_WORKAROUNDS
2163 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2166 config SB1_PASS_2_1_WORKAROUNDS
2168 depends on CPU_SB1 && CPU_SB1_PASS_2
2172 config ARCH_PHYS_ADDR_T_64BIT
2176 prompt "SmartMIPS or microMIPS ASE support"
2178 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2181 Select this if you want neither microMIPS nor SmartMIPS support
2183 config CPU_HAS_SMARTMIPS
2184 depends on SYS_SUPPORTS_SMARTMIPS
2187 SmartMIPS is a extension of the MIPS32 architecture aimed at
2188 increased security at both hardware and software level for
2189 smartcards. Enabling this option will allow proper use of the
2190 SmartMIPS instructions by Linux applications. However a kernel with
2191 this option will not work on a MIPS core without SmartMIPS core. If
2192 you don't know you probably don't have SmartMIPS and should say N
2195 config CPU_MICROMIPS
2196 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2199 When this option is enabled the kernel will be built using the
2205 bool "Support for the MIPS SIMD Architecture (EXPERIMENTAL)"
2206 depends on CPU_SUPPORTS_MSA
2207 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2209 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2210 and a set of SIMD instructions to operate on them. When this option
2211 is enabled the kernel will support allocating & switching MSA
2212 vector register contexts. If you know that your kernel will only be
2213 running on CPUs which do not support MSA or that your userland will
2214 not be making use of it then you may wish to say N here to reduce
2215 the size & complexity of your kernel.
2226 # Vectored interrupt mode is an R2 feature
2228 config CPU_MIPSR2_IRQ_VI
2232 # Extended interrupt mode is an R2 feature
2234 config CPU_MIPSR2_IRQ_EI
2239 depends on !CPU_R3000
2245 config CPU_DADDI_WORKAROUNDS
2248 config CPU_R4000_WORKAROUNDS
2250 select CPU_R4400_WORKAROUNDS
2252 config CPU_R4400_WORKAROUNDS
2256 # - Highmem only makes sense for the 32-bit kernel.
2257 # - The current highmem code will only work properly on physically indexed
2258 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2259 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2260 # moment we protect the user and offer the highmem option only on machines
2261 # where it's known to be safe. This will not offer highmem on a few systems
2262 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2263 # indexed CPUs but we're playing safe.
2264 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2265 # know they might have memory configurations that could make use of highmem
2269 bool "High Memory Support"
2270 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2272 config CPU_SUPPORTS_HIGHMEM
2275 config SYS_SUPPORTS_HIGHMEM
2278 config SYS_SUPPORTS_SMARTMIPS
2281 config SYS_SUPPORTS_MICROMIPS
2284 config SYS_SUPPORTS_MIPS16
2287 This option must be set if a kernel might be executed on a MIPS16-
2288 enabled CPU even if MIPS16 is not actually being used. In other
2289 words, it makes the kernel MIPS16-tolerant.
2291 config CPU_SUPPORTS_MSA
2294 config ARCH_FLATMEM_ENABLE
2296 depends on !NUMA && !CPU_LOONGSON2
2298 config ARCH_DISCONTIGMEM_ENABLE
2300 default y if SGI_IP27
2302 Say Y to support efficient handling of discontiguous physical memory,
2303 for architectures which are either NUMA (Non-Uniform Memory Access)
2304 or have huge holes in the physical address space for other reasons.
2305 See <file:Documentation/vm/numa> for more.
2307 config ARCH_SPARSEMEM_ENABLE
2309 select SPARSEMEM_STATIC
2313 depends on SYS_SUPPORTS_NUMA
2315 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2316 Access). This option improves performance on systems with more
2317 than two nodes; on two node systems it is generally better to
2318 leave it disabled; on single node systems disable this option
2321 config SYS_SUPPORTS_NUMA
2327 depends on NEED_MULTIPLE_NODES
2329 config HW_PERF_EVENTS
2330 bool "Enable hardware performance counter support for perf events"
2331 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2334 Enable hardware performance counter support for perf events. If
2335 disabled, perf events will use software events only.
2340 bool "Multi-Processing support"
2341 depends on SYS_SUPPORTS_SMP
2343 This enables support for systems with more than one CPU. If you have
2344 a system with only one CPU, say N. If you have a system with more
2345 than one CPU, say Y.
2347 If you say N here, the kernel will run on uni- and multiprocessor
2348 machines, but will use only one CPU of a multiprocessor machine. If
2349 you say Y here, the kernel will run on many, but not all,
2350 uniprocessor machines. On a uniprocessor machine, the kernel
2351 will run faster if you say N here.
2353 People using multiprocessor machines who say Y here should also say
2354 Y to "Enhanced Real Time Clock Support", below.
2356 See also the SMP-HOWTO available at
2357 <http://www.tldp.org/docs.html#howto>.
2359 If you don't know what to do here, say N.
2364 config SYS_SUPPORTS_MIPS_CMP
2367 config SYS_SUPPORTS_MIPS_CPS
2370 config SYS_SUPPORTS_SMP
2373 config NR_CPUS_DEFAULT_4
2376 config NR_CPUS_DEFAULT_8
2379 config NR_CPUS_DEFAULT_16
2382 config NR_CPUS_DEFAULT_32
2385 config NR_CPUS_DEFAULT_64
2389 int "Maximum number of CPUs (2-256)"
2392 default "4" if NR_CPUS_DEFAULT_4
2393 default "8" if NR_CPUS_DEFAULT_8
2394 default "16" if NR_CPUS_DEFAULT_16
2395 default "32" if NR_CPUS_DEFAULT_32
2396 default "64" if NR_CPUS_DEFAULT_64
2398 This allows you to specify the maximum number of CPUs which this
2399 kernel will support. The maximum supported value is 32 for 32-bit
2400 kernel and 64 for 64-bit kernels; the minimum value which makes
2401 sense is 1 for Qemu (useful only for kernel debugging purposes)
2402 and 2 for all others.
2404 This is purely to save memory - each supported CPU adds
2405 approximately eight kilobytes to the kernel image. For best
2406 performance should round up your number of processors to the next
2409 config MIPS_PERF_SHARED_TC_COUNTERS
2413 # Timer Interrupt Frequency Configuration
2417 prompt "Timer frequency"
2420 Allows the configuration of the timer frequency.
2423 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2426 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2429 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2432 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2435 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2438 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2441 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2445 config SYS_SUPPORTS_48HZ
2448 config SYS_SUPPORTS_100HZ
2451 config SYS_SUPPORTS_128HZ
2454 config SYS_SUPPORTS_250HZ
2457 config SYS_SUPPORTS_256HZ
2460 config SYS_SUPPORTS_1000HZ
2463 config SYS_SUPPORTS_1024HZ
2466 config SYS_SUPPORTS_ARBIT_HZ
2468 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2469 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2470 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2471 !SYS_SUPPORTS_1024HZ
2476 default 100 if HZ_100
2477 default 128 if HZ_128
2478 default 250 if HZ_250
2479 default 256 if HZ_256
2480 default 1000 if HZ_1000
2481 default 1024 if HZ_1024
2483 source "kernel/Kconfig.preempt"
2486 bool "Kexec system call"
2488 kexec is a system call that implements the ability to shutdown your
2489 current kernel, and to start another kernel. It is like a reboot
2490 but it is independent of the system firmware. And like a reboot
2491 you can start any kernel with it, not just Linux.
2493 The name comes from the similarity to the exec system call.
2495 It is an ongoing process to be certain the hardware in a machine
2496 is properly shutdown, so do not be surprised if this code does not
2497 initially work for you. As of this writing the exact hardware
2498 interface is strongly in flux, so no good recommendation can be
2502 bool "Kernel crash dumps"
2504 Generate crash dump after being started by kexec.
2505 This should be normally only set in special crash dump kernels
2506 which are loaded in the main kernel with kexec-tools into
2507 a specially reserved region and then later executed after
2508 a crash by kdump/kexec. The crash dump kernel must be compiled
2509 to a memory address not used by the main kernel or firmware using
2512 config PHYSICAL_START
2513 hex "Physical address where the kernel is loaded"
2514 default "0xffffffff84000000" if 64BIT
2515 default "0x84000000" if 32BIT
2516 depends on CRASH_DUMP
2518 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2519 If you plan to use kernel for capturing the crash dump change
2520 this value to start of the reserved region (the "X" value as
2521 specified in the "crashkernel=YM@XM" command line boot parameter
2522 passed to the panic-ed kernel).
2525 bool "Enable seccomp to safely compute untrusted bytecode"
2529 This kernel feature is useful for number crunching applications
2530 that may need to compute untrusted bytecode during their
2531 execution. By using pipes or other transports made available to
2532 the process as file descriptors supporting the read/write
2533 syscalls, it's possible to isolate those applications in
2534 their own address space using seccomp. Once seccomp is
2535 enabled via /proc/<pid>/seccomp, it cannot be disabled
2536 and the task is only allowed to execute a few safe syscalls
2537 defined by each seccomp mode.
2539 If unsure, say Y. Only embedded should say N here.
2541 config MIPS_O32_FP64_SUPPORT
2542 bool "Support for O32 binaries using 64-bit FP (EXPERIMENTAL)"
2543 depends on 32BIT || MIPS32_O32
2545 When this is enabled, the kernel will support use of 64-bit floating
2546 point registers with binaries using the O32 ABI along with the
2547 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2548 32-bit MIPS systems this support is at the cost of increasing the
2549 size and complexity of the compiled FPU emulator. Thus if you are
2550 running a MIPS32 system and know that none of your userland binaries
2551 will require 64-bit floating point, you may wish to reduce the size
2552 of your kernel & potentially improve FP emulation performance by
2555 Although binutils currently supports use of this flag the details
2556 concerning its effect upon the O32 ABI in userland are still being
2557 worked on. In order to avoid userland becoming dependant upon current
2558 behaviour before the details have been finalised, this option should
2559 be considered experimental and only enabled by those working upon
2567 select OF_EARLY_FLATTREE
2575 config LOCKDEP_SUPPORT
2579 config STACKTRACE_SUPPORT
2583 source "init/Kconfig"
2585 source "kernel/Kconfig.freezer"
2587 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2595 bool "Support for PCI controller"
2596 depends on HW_HAS_PCI
2598 select NO_GENERIC_PCI_IOPORT_MAP
2600 Find out whether you have a PCI motherboard. PCI is the name of a
2601 bus system, i.e. the way the CPU talks to the other stuff inside
2602 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2606 bool "Support for HT-linked PCI"
2608 depends on CPU_LOONGSON3
2612 Loongson family machines use Hyper-Transport bus for inter-core
2613 connection and device connection. The PCI bus is a subordinate
2614 linked at HT. Choose Y for Loongson-3 based machines.
2619 source "drivers/pci/Kconfig"
2621 source "drivers/pci/pcie/Kconfig"
2624 # ISA support is now enabled via select. Too many systems still have the one
2625 # or other ISA chip on the board that users don't know about so don't expect
2626 # users to choose the right thing ...
2633 depends on HW_HAS_EISA
2635 select GENERIC_ISA_DMA
2637 The Extended Industry Standard Architecture (EISA) bus was
2638 developed as an open alternative to the IBM MicroChannel bus.
2640 The EISA bus provided some of the features of the IBM MicroChannel
2641 bus while maintaining backward compatibility with cards made for
2642 the older ISA bus. The EISA bus saw limited use between 1988 and
2643 1995 when it was made obsolete by the PCI bus.
2645 Say Y here if you are building a kernel for an EISA-based machine.
2649 source "drivers/eisa/Kconfig"
2652 bool "TURBOchannel support"
2653 depends on MACH_DECSTATION
2655 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2656 processors. TURBOchannel programming specifications are available
2658 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2660 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2661 Linux driver support status is documented at:
2662 <http://www.linux-mips.org/wiki/DECstation>
2672 select MIPS_EXTERNAL_TIMER
2680 source "drivers/pcmcia/Kconfig"
2682 source "drivers/pci/hotplug/Kconfig"
2685 tristate "RapidIO support"
2689 If you say Y here, the kernel will include drivers and
2690 infrastructure code to support RapidIO interconnect devices.
2692 source "drivers/rapidio/Kconfig"
2696 menu "Executable file formats"
2698 source "fs/Kconfig.binfmt"
2703 config MIPS32_COMPAT
2704 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2707 Select this option if you want Linux/MIPS 32-bit binary
2708 compatibility. Since all software available for Linux/MIPS is
2709 currently 32-bit you should say Y here.
2713 depends on MIPS32_COMPAT
2714 select ARCH_WANT_OLD_COMPAT_IPC
2717 config SYSVIPC_COMPAT
2719 depends on COMPAT && SYSVIPC
2723 bool "Kernel support for o32 binaries"
2724 depends on MIPS32_COMPAT
2726 Select this option if you want to run o32 binaries. These are pure
2727 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2728 existing binaries are in this format.
2733 bool "Kernel support for n32 binaries"
2734 depends on MIPS32_COMPAT
2736 Select this option if you want to run n32 binaries. These are
2737 64-bit binaries using 32-bit quantities for addressing and certain
2738 data that would normally be 64-bit. They are used in special
2745 default y if MIPS32_O32 || MIPS32_N32
2749 menu "Power management options"
2751 config ARCH_HIBERNATION_POSSIBLE
2753 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2755 config ARCH_SUSPEND_POSSIBLE
2757 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2759 source "kernel/power/Kconfig"
2763 config MIPS_EXTERNAL_TIMER
2766 menu "CPU Power Management"
2768 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2769 source "drivers/cpufreq/Kconfig"
2772 source "drivers/cpuidle/Kconfig"
2776 source "net/Kconfig"
2778 source "drivers/Kconfig"
2780 source "drivers/firmware/Kconfig"
2784 source "arch/mips/Kconfig.debug"
2786 source "security/Kconfig"
2788 source "crypto/Kconfig"
2790 source "lib/Kconfig"
2792 source "arch/mips/kvm/Kconfig"