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_HAS_ELF_RANDOMIZE
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_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
47 select GENERIC_CMOS_UPDATE
48 select HAVE_MOD_ARCH_SPECIFIC
50 select MODULES_USE_ELF_REL if MODULES
51 select MODULES_USE_ELF_RELA if MODULES && 64BIT
52 select CLONE_BACKWARDS
53 select HAVE_DEBUG_STACKOVERFLOW
54 select HAVE_CC_STACKPROTECTOR
55 select CPU_PM if CPU_IDLE
56 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
57 select ARCH_BINFMT_ELF_STATE
58 select SYSCTL_EXCEPTION_TRACE
59 select HAVE_VIRT_CPU_ACCOUNTING_GEN
60 select HAVE_IRQ_TIME_ACCOUNTING
62 menu "Machine selection"
69 bool "Alchemy processor based machines"
70 select ARCH_PHYS_ADDR_T_64BIT
74 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
75 select SYS_HAS_CPU_MIPS32_R1
76 select SYS_SUPPORTS_32BIT_KERNEL
77 select SYS_SUPPORTS_APM_EMULATION
78 select ARCH_REQUIRE_GPIOLIB
79 select SYS_SUPPORTS_ZBOOT
83 bool "Texas Instruments AR7"
85 select DMA_NONCOHERENT
91 select SYS_HAS_CPU_MIPS32_R1
92 select SYS_HAS_EARLY_PRINTK
93 select SYS_SUPPORTS_32BIT_KERNEL
94 select SYS_SUPPORTS_LITTLE_ENDIAN
95 select SYS_SUPPORTS_MIPS16
96 select SYS_SUPPORTS_ZBOOT_UART16550
97 select ARCH_REQUIRE_GPIOLIB
101 Support for the Texas Instruments AR7 System-on-a-Chip
102 family: TNETD7100, 7200 and 7300.
105 bool "Atheros AR231x/AR531x SoC support"
108 select DMA_NONCOHERENT
111 select SYS_HAS_CPU_MIPS32_R1
112 select SYS_SUPPORTS_BIG_ENDIAN
113 select SYS_SUPPORTS_32BIT_KERNEL
114 select SYS_HAS_EARLY_PRINTK
116 Support for Atheros AR231x and Atheros AR531x based boards
119 bool "Atheros AR71XX/AR724X/AR913X based boards"
120 select ARCH_REQUIRE_GPIOLIB
124 select DMA_NONCOHERENT
129 select SYS_HAS_CPU_MIPS32_R2
130 select SYS_HAS_EARLY_PRINTK
131 select SYS_SUPPORTS_32BIT_KERNEL
132 select SYS_SUPPORTS_BIG_ENDIAN
133 select SYS_SUPPORTS_MIPS16
135 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
138 bool "Broadcom Generic BMIPS kernel"
140 select NO_EXCEPT_FILL
146 select BCM7038_L1_IRQ
147 select BCM7120_L2_IRQ
148 select BRCMSTB_L2_IRQ
150 select RAW_IRQ_ACCESSORS
151 select DMA_NONCOHERENT
152 select SYS_SUPPORTS_32BIT_KERNEL
153 select SYS_SUPPORTS_LITTLE_ENDIAN
154 select SYS_SUPPORTS_BIG_ENDIAN
155 select SYS_SUPPORTS_HIGHMEM
156 select SYS_HAS_CPU_BMIPS32_3300
157 select SYS_HAS_CPU_BMIPS4350
158 select SYS_HAS_CPU_BMIPS4380
159 select SYS_HAS_CPU_BMIPS5000
161 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
162 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
163 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
164 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
166 Build a generic DT-based kernel image that boots on select
167 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
168 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
169 must be set appropriately for your board.
172 bool "Broadcom BCM47XX based boards"
173 select ARCH_WANT_OPTIONAL_GPIOLIB
177 select DMA_NONCOHERENT
180 select SYS_HAS_CPU_MIPS32_R1
181 select NO_EXCEPT_FILL
182 select SYS_SUPPORTS_32BIT_KERNEL
183 select SYS_SUPPORTS_LITTLE_ENDIAN
184 select SYS_SUPPORTS_MIPS16
185 select SYS_HAS_EARLY_PRINTK
186 select USE_GENERIC_EARLY_PRINTK_8250
188 select LEDS_GPIO_REGISTER
190 Support for BCM47XX based boards
193 bool "Broadcom BCM63XX based boards"
198 select DMA_NONCOHERENT
200 select SYS_SUPPORTS_32BIT_KERNEL
201 select SYS_SUPPORTS_BIG_ENDIAN
202 select SYS_HAS_EARLY_PRINTK
204 select ARCH_REQUIRE_GPIOLIB
206 select MIPS_L1_CACHE_SHIFT_4
208 Support for BCM63XX based boards
215 select DMA_NONCOHERENT
221 select PCI_GT64XXX_PCI0
223 select SYS_HAS_CPU_NEVADA
224 select SYS_HAS_EARLY_PRINTK
225 select SYS_SUPPORTS_32BIT_KERNEL
226 select SYS_SUPPORTS_64BIT_KERNEL
227 select SYS_SUPPORTS_LITTLE_ENDIAN
228 select USE_GENERIC_EARLY_PRINTK_8250
230 config MACH_DECSTATION
234 select CEVT_R4K if CPU_R4X00
236 select CSRC_R4K if CPU_R4X00
237 select CPU_DADDI_WORKAROUNDS if 64BIT
238 select CPU_R4000_WORKAROUNDS if 64BIT
239 select CPU_R4400_WORKAROUNDS if 64BIT
240 select DMA_NONCOHERENT
243 select SYS_HAS_CPU_R3000
244 select SYS_HAS_CPU_R4X00
245 select SYS_SUPPORTS_32BIT_KERNEL
246 select SYS_SUPPORTS_64BIT_KERNEL
247 select SYS_SUPPORTS_LITTLE_ENDIAN
248 select SYS_SUPPORTS_128HZ
249 select SYS_SUPPORTS_256HZ
250 select SYS_SUPPORTS_1024HZ
251 select MIPS_L1_CACHE_SHIFT_4
253 This enables support for DEC's MIPS based workstations. For details
254 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
255 DECstation porting pages on <http://decstation.unix-ag.org/>.
257 If you have one of the following DECstation Models you definitely
258 want to choose R4xx0 for the CPU Type:
265 otherwise choose R3000.
268 bool "Jazz family of machines"
271 select ARCH_MAY_HAVE_PC_FDC
274 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
275 select GENERIC_ISA_DMA
276 select HAVE_PCSPKR_PLATFORM
281 select SYS_HAS_CPU_R4X00
282 select SYS_SUPPORTS_32BIT_KERNEL
283 select SYS_SUPPORTS_64BIT_KERNEL
284 select SYS_SUPPORTS_100HZ
286 This a family of machines based on the MIPS R4030 chipset which was
287 used by several vendors to build RISC/os and Windows NT workstations.
288 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
289 Olivetti M700-10 workstations.
292 bool "Ingenic JZ4740 based machines"
293 select SYS_HAS_CPU_MIPS32_R1
294 select SYS_SUPPORTS_32BIT_KERNEL
295 select SYS_SUPPORTS_LITTLE_ENDIAN
296 select SYS_SUPPORTS_ZBOOT_UART16550
297 select DMA_NONCOHERENT
299 select ARCH_REQUIRE_GPIOLIB
300 select SYS_HAS_EARLY_PRINTK
302 select GENERIC_IRQ_CHIP
305 bool "Lantiq based platforms"
306 select DMA_NONCOHERENT
310 select SYS_HAS_CPU_MIPS32_R1
311 select SYS_HAS_CPU_MIPS32_R2
312 select SYS_SUPPORTS_BIG_ENDIAN
313 select SYS_SUPPORTS_32BIT_KERNEL
314 select SYS_SUPPORTS_MIPS16
315 select SYS_SUPPORTS_MULTITHREADING
316 select SYS_HAS_EARLY_PRINTK
317 select ARCH_REQUIRE_GPIOLIB
320 select HAVE_MACH_CLKDEV
324 select PINCTRL_LANTIQ
325 select ARCH_HAS_RESET_CONTROLLER
326 select RESET_CONTROLLER
329 bool "LASAT Networks platforms"
333 select DMA_NONCOHERENT
334 select SYS_HAS_EARLY_PRINTK
337 select PCI_GT64XXX_PCI0
339 select R5000_CPU_SCACHE
340 select SYS_HAS_CPU_R5000
341 select SYS_SUPPORTS_32BIT_KERNEL
342 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
343 select SYS_SUPPORTS_LITTLE_ENDIAN
346 bool "Loongson family of machines"
347 select SYS_SUPPORTS_ZBOOT
349 This enables the support of Loongson family of machines.
351 Loongson is a family of general-purpose MIPS-compatible CPUs.
352 developed at Institute of Computing Technology (ICT),
353 Chinese Academy of Sciences (CAS) in the People's Republic
354 of China. The chief architect is Professor Weiwu Hu.
356 config MACH_LOONGSON1
357 bool "Loongson 1 family of machines"
358 select SYS_SUPPORTS_ZBOOT
360 This enables support for the Loongson 1 based machines.
362 Loongson 1 is a family of 32-bit MIPS-compatible SoCs developed by
363 the ICT (Institute of Computing Technology) and the Chinese Academy
366 config MACH_PISTACHIO
367 bool "IMG Pistachio SoC based boards"
368 select ARCH_REQUIRE_GPIOLIB
372 select CLKSRC_MIPS_GIC
375 select DMA_MAYBE_COHERENT
379 select MIPS_CPU_SCACHE
383 select SYS_HAS_CPU_MIPS32_R2
384 select SYS_SUPPORTS_32BIT_KERNEL
385 select SYS_SUPPORTS_LITTLE_ENDIAN
386 select SYS_SUPPORTS_MIPS_CPS
387 select SYS_SUPPORTS_MULTITHREADING
388 select SYS_SUPPORTS_ZBOOT
391 This enables support for the IMG Pistachio SoC platform.
394 bool "MIPS Malta board"
395 select ARCH_MAY_HAVE_PC_FDC
400 select CLKSRC_MIPS_GIC
401 select DMA_MAYBE_COHERENT
402 select GENERIC_ISA_DMA
403 select HAVE_PCSPKR_PLATFORM
410 select MIPS_CPU_SCACHE
411 select MIPS_L1_CACHE_SHIFT_6
412 select PCI_GT64XXX_PCI0
415 select SYS_HAS_CPU_MIPS32_R1
416 select SYS_HAS_CPU_MIPS32_R2
417 select SYS_HAS_CPU_MIPS32_R3_5
418 select SYS_HAS_CPU_MIPS32_R5
419 select SYS_HAS_CPU_MIPS32_R6
420 select SYS_HAS_CPU_MIPS64_R1
421 select SYS_HAS_CPU_MIPS64_R2
422 select SYS_HAS_CPU_MIPS64_R6
423 select SYS_HAS_CPU_NEVADA
424 select SYS_HAS_CPU_RM7000
425 select SYS_SUPPORTS_32BIT_KERNEL
426 select SYS_SUPPORTS_64BIT_KERNEL
427 select SYS_SUPPORTS_BIG_ENDIAN
428 select SYS_SUPPORTS_HIGHMEM
429 select SYS_SUPPORTS_LITTLE_ENDIAN
430 select SYS_SUPPORTS_MICROMIPS
431 select SYS_SUPPORTS_MIPS_CMP
432 select SYS_SUPPORTS_MIPS_CPS
433 select SYS_SUPPORTS_MIPS16
434 select SYS_SUPPORTS_MULTITHREADING
435 select SYS_SUPPORTS_SMARTMIPS
436 select SYS_SUPPORTS_ZBOOT
438 This enables support for the MIPS Technologies Malta evaluation
442 bool "MIPS SEAD3 board"
448 select CLKSRC_MIPS_GIC
449 select CPU_MIPSR2_IRQ_VI
450 select CPU_MIPSR2_IRQ_EI
451 select DMA_NONCOHERENT
456 select SYS_HAS_CPU_MIPS32_R1
457 select SYS_HAS_CPU_MIPS32_R2
458 select SYS_HAS_CPU_MIPS64_R1
459 select SYS_HAS_EARLY_PRINTK
460 select SYS_SUPPORTS_32BIT_KERNEL
461 select SYS_SUPPORTS_64BIT_KERNEL
462 select SYS_SUPPORTS_BIG_ENDIAN
463 select SYS_SUPPORTS_LITTLE_ENDIAN
464 select SYS_SUPPORTS_SMARTMIPS
465 select SYS_SUPPORTS_MICROMIPS
466 select SYS_SUPPORTS_MIPS16
467 select USB_EHCI_BIG_ENDIAN_DESC
468 select USB_EHCI_BIG_ENDIAN_MMIO
471 This enables support for the MIPS Technologies SEAD3 evaluation
475 bool "NEC EMMA2RH Mark-eins board"
479 This enables support for the NEC Electronics Mark-eins boards.
482 bool "NEC VR4100 series based machines"
485 select SYS_HAS_CPU_VR41XX
486 select SYS_SUPPORTS_MIPS16
487 select ARCH_REQUIRE_GPIOLIB
490 bool "NXP STB220 board"
493 Support for NXP Semiconductors STB220 Development Board.
500 Support for NXP Semiconductors STB225 Development Board.
503 bool "PMC-Sierra MSP chipsets"
506 select DMA_NONCOHERENT
508 select NO_EXCEPT_FILL
510 select SYS_HAS_CPU_MIPS32_R1
511 select SYS_HAS_CPU_MIPS32_R2
512 select SYS_SUPPORTS_32BIT_KERNEL
513 select SYS_SUPPORTS_BIG_ENDIAN
514 select SYS_SUPPORTS_MIPS16
517 select SERIAL_8250_CONSOLE
518 select USB_EHCI_BIG_ENDIAN_MMIO
519 select USB_EHCI_BIG_ENDIAN_DESC
521 This adds support for the PMC-Sierra family of Multi-Service
522 Processor System-On-A-Chips. These parts include a number
523 of integrated peripherals, interfaces and DSPs in addition to
524 a variety of MIPS cores.
527 bool "Ralink based machines"
531 select DMA_NONCOHERENT
534 select SYS_HAS_CPU_MIPS32_R1
535 select SYS_HAS_CPU_MIPS32_R2
536 select SYS_SUPPORTS_32BIT_KERNEL
537 select SYS_SUPPORTS_LITTLE_ENDIAN
538 select SYS_SUPPORTS_MIPS16
539 select SYS_HAS_EARLY_PRINTK
540 select HAVE_MACH_CLKDEV
542 select ARCH_HAS_RESET_CONTROLLER
543 select RESET_CONTROLLER
546 bool "SGI IP22 (Indy/Indigo2)"
552 select DEFAULT_SGI_PARTITION
553 select DMA_NONCOHERENT
557 select IP22_CPU_SCACHE
559 select GENERIC_ISA_DMA_SUPPORT_BROKEN
561 select SGI_HAS_INDYDOG
567 select SYS_HAS_CPU_R4X00
568 select SYS_HAS_CPU_R5000
570 # Disable EARLY_PRINTK for now since it leads to overwritten prom
571 # memory during early boot on some machines.
573 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
574 # for a more details discussion
576 # select SYS_HAS_EARLY_PRINTK
577 select SYS_SUPPORTS_32BIT_KERNEL
578 select SYS_SUPPORTS_64BIT_KERNEL
579 select SYS_SUPPORTS_BIG_ENDIAN
580 select MIPS_L1_CACHE_SHIFT_7
582 This are the SGI Indy, Challenge S and Indigo2, as well as certain
583 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
584 that runs on these, say Y here.
587 bool "SGI IP27 (Origin200/2000)"
591 select DEFAULT_SGI_PARTITION
593 select SYS_HAS_EARLY_PRINTK
595 select NR_CPUS_DEFAULT_64
596 select SYS_HAS_CPU_R10000
597 select SYS_SUPPORTS_64BIT_KERNEL
598 select SYS_SUPPORTS_BIG_ENDIAN
599 select SYS_SUPPORTS_NUMA
600 select SYS_SUPPORTS_SMP
601 select MIPS_L1_CACHE_SHIFT_7
603 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
604 workstations. To compile a Linux kernel that runs on these, say Y
608 bool "SGI IP28 (Indigo2 R10k)"
614 select DEFAULT_SGI_PARTITION
615 select DMA_NONCOHERENT
616 select GENERIC_ISA_DMA_SUPPORT_BROKEN
622 select SGI_HAS_INDYDOG
628 select SYS_HAS_CPU_R10000
630 # Disable EARLY_PRINTK for now since it leads to overwritten prom
631 # memory during early boot on some machines.
633 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
634 # for a more details discussion
636 # select SYS_HAS_EARLY_PRINTK
637 select SYS_SUPPORTS_64BIT_KERNEL
638 select SYS_SUPPORTS_BIG_ENDIAN
639 select MIPS_L1_CACHE_SHIFT_7
641 This is the SGI Indigo2 with R10000 processor. To compile a Linux
642 kernel that runs on these, say Y here.
651 select DMA_NONCOHERENT
654 select R5000_CPU_SCACHE
655 select RM7000_CPU_SCACHE
656 select SYS_HAS_CPU_R5000
657 select SYS_HAS_CPU_R10000 if BROKEN
658 select SYS_HAS_CPU_RM7000
659 select SYS_HAS_CPU_NEVADA
660 select SYS_SUPPORTS_64BIT_KERNEL
661 select SYS_SUPPORTS_BIG_ENDIAN
663 If you want this kernel to run on SGI O2 workstation, say Y here.
666 bool "Sibyte BCM91120C-CRhine"
669 select SIBYTE_BCM1120
671 select SYS_HAS_CPU_SB1
672 select SYS_SUPPORTS_BIG_ENDIAN
673 select SYS_SUPPORTS_LITTLE_ENDIAN
676 bool "Sibyte BCM91120x-Carmel"
679 select SIBYTE_BCM1120
681 select SYS_HAS_CPU_SB1
682 select SYS_SUPPORTS_BIG_ENDIAN
683 select SYS_SUPPORTS_LITTLE_ENDIAN
686 bool "Sibyte BCM91125C-CRhone"
689 select SIBYTE_BCM1125
691 select SYS_HAS_CPU_SB1
692 select SYS_SUPPORTS_BIG_ENDIAN
693 select SYS_SUPPORTS_HIGHMEM
694 select SYS_SUPPORTS_LITTLE_ENDIAN
697 bool "Sibyte BCM91125E-Rhone"
700 select SIBYTE_BCM1125H
702 select SYS_HAS_CPU_SB1
703 select SYS_SUPPORTS_BIG_ENDIAN
704 select SYS_SUPPORTS_LITTLE_ENDIAN
707 bool "Sibyte BCM91250A-SWARM"
710 select HAVE_PATA_PLATFORM
713 select SYS_HAS_CPU_SB1
714 select SYS_SUPPORTS_BIG_ENDIAN
715 select SYS_SUPPORTS_HIGHMEM
716 select SYS_SUPPORTS_LITTLE_ENDIAN
717 select ZONE_DMA32 if 64BIT
719 config SIBYTE_LITTLESUR
720 bool "Sibyte BCM91250C2-LittleSur"
723 select HAVE_PATA_PLATFORM
726 select SYS_HAS_CPU_SB1
727 select SYS_SUPPORTS_BIG_ENDIAN
728 select SYS_SUPPORTS_HIGHMEM
729 select SYS_SUPPORTS_LITTLE_ENDIAN
731 config SIBYTE_SENTOSA
732 bool "Sibyte BCM91250E-Sentosa"
737 select SYS_HAS_CPU_SB1
738 select SYS_SUPPORTS_BIG_ENDIAN
739 select SYS_SUPPORTS_LITTLE_ENDIAN
742 bool "Sibyte BCM91480B-BigSur"
745 select NR_CPUS_DEFAULT_4
746 select SIBYTE_BCM1x80
748 select SYS_HAS_CPU_SB1
749 select SYS_SUPPORTS_BIG_ENDIAN
750 select SYS_SUPPORTS_HIGHMEM
751 select SYS_SUPPORTS_LITTLE_ENDIAN
752 select ZONE_DMA32 if 64BIT
755 bool "SNI RM200/300/400"
756 select FW_ARC if CPU_LITTLE_ENDIAN
757 select FW_ARC32 if CPU_LITTLE_ENDIAN
758 select FW_SNIPROM if CPU_BIG_ENDIAN
759 select ARCH_MAY_HAVE_PC_FDC
763 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
764 select DMA_NONCOHERENT
765 select GENERIC_ISA_DMA
766 select HAVE_PCSPKR_PLATFORM
773 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
774 select SYS_HAS_CPU_R4X00
775 select SYS_HAS_CPU_R5000
776 select SYS_HAS_CPU_R10000
777 select R5000_CPU_SCACHE
778 select SYS_HAS_EARLY_PRINTK
779 select SYS_SUPPORTS_32BIT_KERNEL
780 select SYS_SUPPORTS_64BIT_KERNEL
781 select SYS_SUPPORTS_BIG_ENDIAN
782 select SYS_SUPPORTS_HIGHMEM
783 select SYS_SUPPORTS_LITTLE_ENDIAN
785 The SNI RM200/300/400 are MIPS-based machines manufactured by
786 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
787 Technology and now in turn merged with Fujitsu. Say Y here to
788 support this machine type.
791 bool "Toshiba TX39 series based machines"
794 bool "Toshiba TX49 series based machines"
796 config MIKROTIK_RB532
797 bool "Mikrotik RB532 boards"
800 select DMA_NONCOHERENT
803 select SYS_HAS_CPU_MIPS32_R1
804 select SYS_SUPPORTS_32BIT_KERNEL
805 select SYS_SUPPORTS_LITTLE_ENDIAN
808 select ARCH_REQUIRE_GPIOLIB
809 select MIPS_L1_CACHE_SHIFT_4
811 Support the Mikrotik(tm) RouterBoard 532 series,
812 based on the IDT RC32434 SoC.
814 config CAVIUM_OCTEON_SOC
815 bool "Cavium Networks Octeon SoC based boards"
817 select ARCH_PHYS_ADDR_T_64BIT
819 select SYS_SUPPORTS_64BIT_KERNEL
820 select SYS_SUPPORTS_BIG_ENDIAN
822 select SYS_SUPPORTS_LITTLE_ENDIAN
823 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
824 select SYS_HAS_EARLY_PRINTK
825 select SYS_HAS_CPU_CAVIUM_OCTEON
830 select ARCH_REQUIRE_GPIOLIB
833 select ARCH_SPARSEMEM_ENABLE
834 select SYS_SUPPORTS_SMP
835 select NR_CPUS_DEFAULT_16
837 select MTD_COMPLEX_MAPPINGS
839 This option supports all of the Octeon reference boards from Cavium
840 Networks. It builds a kernel that dynamically determines the Octeon
841 CPU type and supports all known board reference implementations.
842 Some of the supported boards are:
849 Say Y here for most Octeon reference boards.
852 bool "Netlogic XLR/XLS based systems"
855 select SYS_HAS_CPU_XLR
856 select SYS_SUPPORTS_SMP
859 select SYS_SUPPORTS_32BIT_KERNEL
860 select SYS_SUPPORTS_64BIT_KERNEL
861 select ARCH_PHYS_ADDR_T_64BIT
862 select SYS_SUPPORTS_BIG_ENDIAN
863 select SYS_SUPPORTS_HIGHMEM
865 select NR_CPUS_DEFAULT_32
869 select ZONE_DMA32 if 64BIT
871 select SYS_HAS_EARLY_PRINTK
872 select SYS_SUPPORTS_ZBOOT
873 select SYS_SUPPORTS_ZBOOT_UART16550
875 Support for systems based on Netlogic XLR and XLS processors.
876 Say Y here if you have a XLR or XLS based board.
879 bool "Netlogic XLP based systems"
882 select SYS_HAS_CPU_XLP
883 select SYS_SUPPORTS_SMP
885 select SYS_SUPPORTS_32BIT_KERNEL
886 select SYS_SUPPORTS_64BIT_KERNEL
887 select ARCH_PHYS_ADDR_T_64BIT
888 select SYS_SUPPORTS_BIG_ENDIAN
889 select SYS_SUPPORTS_LITTLE_ENDIAN
890 select SYS_SUPPORTS_HIGHMEM
892 select NR_CPUS_DEFAULT_32
896 select ZONE_DMA32 if 64BIT
898 select SYS_HAS_EARLY_PRINTK
900 select SYS_SUPPORTS_ZBOOT
901 select SYS_SUPPORTS_ZBOOT_UART16550
903 This board is based on Netlogic XLP Processor.
904 Say Y here if you have a XLP based board.
907 bool "Para-Virtualized guest system"
911 select SYS_SUPPORTS_64BIT_KERNEL
912 select SYS_SUPPORTS_32BIT_KERNEL
913 select SYS_SUPPORTS_BIG_ENDIAN
914 select SYS_SUPPORTS_SMP
915 select NR_CPUS_DEFAULT_4
916 select SYS_HAS_EARLY_PRINTK
917 select SYS_HAS_CPU_MIPS32_R2
918 select SYS_HAS_CPU_MIPS64_R2
919 select SYS_HAS_CPU_CAVIUM_OCTEON
923 This option supports guest running under ????
927 source "arch/mips/alchemy/Kconfig"
928 source "arch/mips/ath25/Kconfig"
929 source "arch/mips/ath79/Kconfig"
930 source "arch/mips/bcm47xx/Kconfig"
931 source "arch/mips/bcm63xx/Kconfig"
932 source "arch/mips/bmips/Kconfig"
933 source "arch/mips/jazz/Kconfig"
934 source "arch/mips/jz4740/Kconfig"
935 source "arch/mips/lantiq/Kconfig"
936 source "arch/mips/lasat/Kconfig"
937 source "arch/mips/pmcs-msp71xx/Kconfig"
938 source "arch/mips/ralink/Kconfig"
939 source "arch/mips/sgi-ip27/Kconfig"
940 source "arch/mips/sibyte/Kconfig"
941 source "arch/mips/txx9/Kconfig"
942 source "arch/mips/vr41xx/Kconfig"
943 source "arch/mips/cavium-octeon/Kconfig"
944 source "arch/mips/loongson/Kconfig"
945 source "arch/mips/loongson1/Kconfig"
946 source "arch/mips/netlogic/Kconfig"
947 source "arch/mips/paravirt/Kconfig"
951 config RWSEM_GENERIC_SPINLOCK
955 config RWSEM_XCHGADD_ALGORITHM
958 config ARCH_HAS_ILOG2_U32
962 config ARCH_HAS_ILOG2_U64
966 config GENERIC_HWEIGHT
970 config GENERIC_CALIBRATE_DELAY
974 config SCHED_OMIT_FRAME_POINTER
979 # Select some configuration options automatically based on user selections.
984 config ARCH_MAY_HAVE_PC_FDC
1021 select ARCH_REQUIRE_GPIOLIB
1027 config ARCH_DMA_ADDR_T_64BIT
1028 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1030 config DMA_MAYBE_COHERENT
1031 select DMA_NONCOHERENT
1037 config DMA_NONCOHERENT
1039 select NEED_DMA_MAP_STATE
1041 config NEED_DMA_MAP_STATE
1044 config SYS_HAS_EARLY_PRINTK
1048 bool "Support for hot-pluggable CPUs"
1049 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
1051 Say Y here to allow turning CPUs off and on. CPUs can be
1052 controlled through /sys/devices/system/cpu.
1053 (Note: power management support will enable this option
1054 automatically on SMP systems. )
1055 Say N if you want to disable CPU hotplug.
1057 config SYS_SUPPORTS_HOTPLUG_CPU
1064 config MIPS_BONITO64
1079 config NO_IOPORT_MAP
1085 config GENERIC_ISA_DMA
1087 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1090 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1092 select GENERIC_ISA_DMA
1097 config HOLES_IN_ZONE
1101 # Endianness selection. Sufficiently obscure so many users don't know what to
1102 # answer,so we try hard to limit the available choices. Also the use of a
1103 # choice statement should be more obvious to the user.
1106 prompt "Endianness selection"
1108 Some MIPS machines can be configured for either little or big endian
1109 byte order. These modes require different kernels and a different
1110 Linux distribution. In general there is one preferred byteorder for a
1111 particular system but some systems are just as commonly used in the
1112 one or the other endianness.
1114 config CPU_BIG_ENDIAN
1116 depends on SYS_SUPPORTS_BIG_ENDIAN
1118 config CPU_LITTLE_ENDIAN
1119 bool "Little endian"
1120 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1127 config SYS_SUPPORTS_APM_EMULATION
1130 config SYS_SUPPORTS_BIG_ENDIAN
1133 config SYS_SUPPORTS_LITTLE_ENDIAN
1136 config SYS_SUPPORTS_HUGETLBFS
1138 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1141 config MIPS_HUGE_TLB_SUPPORT
1142 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1163 config PCI_GT64XXX_PCI0
1166 config NO_EXCEPT_FILL
1173 select DMA_NONCOHERENT
1175 select SWAP_IO_SPACE
1176 select SYS_HAS_CPU_R5500
1177 select SYS_SUPPORTS_32BIT_KERNEL
1178 select SYS_SUPPORTS_64BIT_KERNEL
1179 select SYS_SUPPORTS_BIG_ENDIAN
1186 select DMA_NONCOHERENT
1187 select SYS_HAS_CPU_MIPS32_R2
1188 select SYS_SUPPORTS_32BIT_KERNEL
1189 select SYS_SUPPORTS_LITTLE_ENDIAN
1190 select SYS_SUPPORTS_BIG_ENDIAN
1191 select SYS_SUPPORTS_MIPS16
1192 select CPU_MIPSR2_IRQ_VI
1201 config SWAP_IO_SPACE
1204 config SGI_HAS_INDYDOG
1216 config SGI_HAS_ZILOG
1219 config SGI_HAS_I8042
1222 config DEFAULT_SGI_PARTITION
1234 config MIPS_L1_CACHE_SHIFT_4
1237 config MIPS_L1_CACHE_SHIFT_5
1240 config MIPS_L1_CACHE_SHIFT_6
1243 config MIPS_L1_CACHE_SHIFT_7
1246 config MIPS_L1_CACHE_SHIFT
1248 default "7" if MIPS_L1_CACHE_SHIFT_7
1249 default "6" if MIPS_L1_CACHE_SHIFT_6
1250 default "5" if MIPS_L1_CACHE_SHIFT_5
1251 default "4" if MIPS_L1_CACHE_SHIFT_4
1254 config HAVE_STD_PC_SERIAL_PORT
1258 bool "ARC console support"
1259 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1263 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1268 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1277 menu "CPU selection"
1283 config CPU_LOONGSON3
1284 bool "Loongson 3 CPU"
1285 depends on SYS_HAS_CPU_LOONGSON3
1286 select CPU_SUPPORTS_64BIT_KERNEL
1287 select CPU_SUPPORTS_HIGHMEM
1288 select CPU_SUPPORTS_HUGEPAGES
1289 select WEAK_ORDERING
1290 select WEAK_REORDERING_BEYOND_LLSC
1292 The Loongson 3 processor implements the MIPS64R2 instruction
1293 set with many extensions.
1295 config CPU_LOONGSON2E
1297 depends on SYS_HAS_CPU_LOONGSON2E
1298 select CPU_LOONGSON2
1300 The Loongson 2E processor implements the MIPS III instruction set
1301 with many extensions.
1303 It has an internal FPGA northbridge, which is compatible to
1306 config CPU_LOONGSON2F
1308 depends on SYS_HAS_CPU_LOONGSON2F
1309 select CPU_LOONGSON2
1310 select ARCH_REQUIRE_GPIOLIB
1312 The Loongson 2F processor implements the MIPS III instruction set
1313 with many extensions.
1315 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1316 have a similar programming interface with FPGA northbridge used in
1319 config CPU_LOONGSON1B
1321 depends on SYS_HAS_CPU_LOONGSON1B
1322 select CPU_LOONGSON1
1324 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1325 release 2 instruction set.
1327 config CPU_MIPS32_R1
1328 bool "MIPS32 Release 1"
1329 depends on SYS_HAS_CPU_MIPS32_R1
1330 select CPU_HAS_PREFETCH
1331 select CPU_SUPPORTS_32BIT_KERNEL
1332 select CPU_SUPPORTS_HIGHMEM
1334 Choose this option to build a kernel for release 1 or later of the
1335 MIPS32 architecture. Most modern embedded systems with a 32-bit
1336 MIPS processor are based on a MIPS32 processor. If you know the
1337 specific type of processor in your system, choose those that one
1338 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1339 Release 2 of the MIPS32 architecture is available since several
1340 years so chances are you even have a MIPS32 Release 2 processor
1341 in which case you should choose CPU_MIPS32_R2 instead for better
1344 config CPU_MIPS32_R2
1345 bool "MIPS32 Release 2"
1346 depends on SYS_HAS_CPU_MIPS32_R2
1347 select CPU_HAS_PREFETCH
1348 select CPU_SUPPORTS_32BIT_KERNEL
1349 select CPU_SUPPORTS_HIGHMEM
1350 select CPU_SUPPORTS_MSA
1353 Choose this option to build a kernel for release 2 or later of the
1354 MIPS32 architecture. Most modern embedded systems with a 32-bit
1355 MIPS processor are based on a MIPS32 processor. If you know the
1356 specific type of processor in your system, choose those that one
1357 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1359 config CPU_MIPS32_R6
1360 bool "MIPS32 Release 6 (EXPERIMENTAL)"
1361 depends on SYS_HAS_CPU_MIPS32_R6
1362 select CPU_HAS_PREFETCH
1363 select CPU_SUPPORTS_32BIT_KERNEL
1364 select CPU_SUPPORTS_HIGHMEM
1365 select CPU_SUPPORTS_MSA
1368 select MIPS_O32_FP64_SUPPORT
1370 Choose this option to build a kernel for release 6 or later of the
1371 MIPS32 architecture. New MIPS processors, starting with the Warrior
1372 family, are based on a MIPS32r6 processor. If you own an older
1373 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1375 config CPU_MIPS64_R1
1376 bool "MIPS64 Release 1"
1377 depends on SYS_HAS_CPU_MIPS64_R1
1378 select CPU_HAS_PREFETCH
1379 select CPU_SUPPORTS_32BIT_KERNEL
1380 select CPU_SUPPORTS_64BIT_KERNEL
1381 select CPU_SUPPORTS_HIGHMEM
1382 select CPU_SUPPORTS_HUGEPAGES
1384 Choose this option to build a kernel for release 1 or later of the
1385 MIPS64 architecture. Many modern embedded systems with a 64-bit
1386 MIPS processor are based on a MIPS64 processor. If you know the
1387 specific type of processor in your system, choose those that one
1388 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1389 Release 2 of the MIPS64 architecture is available since several
1390 years so chances are you even have a MIPS64 Release 2 processor
1391 in which case you should choose CPU_MIPS64_R2 instead for better
1394 config CPU_MIPS64_R2
1395 bool "MIPS64 Release 2"
1396 depends on SYS_HAS_CPU_MIPS64_R2
1397 select CPU_HAS_PREFETCH
1398 select CPU_SUPPORTS_32BIT_KERNEL
1399 select CPU_SUPPORTS_64BIT_KERNEL
1400 select CPU_SUPPORTS_HIGHMEM
1401 select CPU_SUPPORTS_HUGEPAGES
1402 select CPU_SUPPORTS_MSA
1404 Choose this option to build a kernel for release 2 or later of the
1405 MIPS64 architecture. Many modern embedded systems with a 64-bit
1406 MIPS processor are based on a MIPS64 processor. If you know the
1407 specific type of processor in your system, choose those that one
1408 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1410 config CPU_MIPS64_R6
1411 bool "MIPS64 Release 6 (EXPERIMENTAL)"
1412 depends on SYS_HAS_CPU_MIPS64_R6
1413 select CPU_HAS_PREFETCH
1414 select CPU_SUPPORTS_32BIT_KERNEL
1415 select CPU_SUPPORTS_64BIT_KERNEL
1416 select CPU_SUPPORTS_HIGHMEM
1417 select CPU_SUPPORTS_MSA
1420 Choose this option to build a kernel for release 6 or later of the
1421 MIPS64 architecture. New MIPS processors, starting with the Warrior
1422 family, are based on a MIPS64r6 processor. If you own an older
1423 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1427 depends on SYS_HAS_CPU_R3000
1429 select CPU_SUPPORTS_32BIT_KERNEL
1430 select CPU_SUPPORTS_HIGHMEM
1432 Please make sure to pick the right CPU type. Linux/MIPS is not
1433 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1434 *not* work on R4000 machines and vice versa. However, since most
1435 of the supported machines have an R4000 (or similar) CPU, R4x00
1436 might be a safe bet. If the resulting kernel does not work,
1437 try to recompile with R3000.
1441 depends on SYS_HAS_CPU_TX39XX
1442 select CPU_SUPPORTS_32BIT_KERNEL
1446 depends on SYS_HAS_CPU_VR41XX
1447 select CPU_SUPPORTS_32BIT_KERNEL
1448 select CPU_SUPPORTS_64BIT_KERNEL
1450 The options selects support for the NEC VR4100 series of processors.
1451 Only choose this option if you have one of these processors as a
1452 kernel built with this option will not run on any other type of
1453 processor or vice versa.
1457 depends on SYS_HAS_CPU_R4300
1458 select CPU_SUPPORTS_32BIT_KERNEL
1459 select CPU_SUPPORTS_64BIT_KERNEL
1461 MIPS Technologies R4300-series processors.
1465 depends on SYS_HAS_CPU_R4X00
1466 select CPU_SUPPORTS_32BIT_KERNEL
1467 select CPU_SUPPORTS_64BIT_KERNEL
1468 select CPU_SUPPORTS_HUGEPAGES
1470 MIPS Technologies R4000-series processors other than 4300, including
1471 the R4000, R4400, R4600, and 4700.
1475 depends on SYS_HAS_CPU_TX49XX
1476 select CPU_HAS_PREFETCH
1477 select CPU_SUPPORTS_32BIT_KERNEL
1478 select CPU_SUPPORTS_64BIT_KERNEL
1479 select CPU_SUPPORTS_HUGEPAGES
1483 depends on SYS_HAS_CPU_R5000
1484 select CPU_SUPPORTS_32BIT_KERNEL
1485 select CPU_SUPPORTS_64BIT_KERNEL
1486 select CPU_SUPPORTS_HUGEPAGES
1488 MIPS Technologies R5000-series processors other than the Nevada.
1492 depends on SYS_HAS_CPU_R5432
1493 select CPU_SUPPORTS_32BIT_KERNEL
1494 select CPU_SUPPORTS_64BIT_KERNEL
1495 select CPU_SUPPORTS_HUGEPAGES
1499 depends on SYS_HAS_CPU_R5500
1500 select CPU_SUPPORTS_32BIT_KERNEL
1501 select CPU_SUPPORTS_64BIT_KERNEL
1502 select CPU_SUPPORTS_HUGEPAGES
1504 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1509 depends on SYS_HAS_CPU_R6000
1510 select CPU_SUPPORTS_32BIT_KERNEL
1512 MIPS Technologies R6000 and R6000A series processors. Note these
1513 processors are extremely rare and the support for them is incomplete.
1517 depends on SYS_HAS_CPU_NEVADA
1518 select CPU_SUPPORTS_32BIT_KERNEL
1519 select CPU_SUPPORTS_64BIT_KERNEL
1520 select CPU_SUPPORTS_HUGEPAGES
1522 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1526 depends on SYS_HAS_CPU_R8000
1527 select CPU_HAS_PREFETCH
1528 select CPU_SUPPORTS_64BIT_KERNEL
1530 MIPS Technologies R8000 processors. Note these processors are
1531 uncommon and the support for them is incomplete.
1535 depends on SYS_HAS_CPU_R10000
1536 select CPU_HAS_PREFETCH
1537 select CPU_SUPPORTS_32BIT_KERNEL
1538 select CPU_SUPPORTS_64BIT_KERNEL
1539 select CPU_SUPPORTS_HIGHMEM
1540 select CPU_SUPPORTS_HUGEPAGES
1542 MIPS Technologies R10000-series processors.
1546 depends on SYS_HAS_CPU_RM7000
1547 select CPU_HAS_PREFETCH
1548 select CPU_SUPPORTS_32BIT_KERNEL
1549 select CPU_SUPPORTS_64BIT_KERNEL
1550 select CPU_SUPPORTS_HIGHMEM
1551 select CPU_SUPPORTS_HUGEPAGES
1555 depends on SYS_HAS_CPU_SB1
1556 select CPU_SUPPORTS_32BIT_KERNEL
1557 select CPU_SUPPORTS_64BIT_KERNEL
1558 select CPU_SUPPORTS_HIGHMEM
1559 select CPU_SUPPORTS_HUGEPAGES
1560 select WEAK_ORDERING
1562 config CPU_CAVIUM_OCTEON
1563 bool "Cavium Octeon processor"
1564 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1565 select CPU_HAS_PREFETCH
1566 select CPU_SUPPORTS_64BIT_KERNEL
1567 select WEAK_ORDERING
1568 select CPU_SUPPORTS_HIGHMEM
1569 select CPU_SUPPORTS_HUGEPAGES
1570 select USB_EHCI_BIG_ENDIAN_MMIO
1571 select MIPS_L1_CACHE_SHIFT_7
1573 The Cavium Octeon processor is a highly integrated chip containing
1574 many ethernet hardware widgets for networking tasks. The processor
1575 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1576 Full details can be found at http://www.caviumnetworks.com.
1579 bool "Broadcom BMIPS"
1580 depends on SYS_HAS_CPU_BMIPS
1582 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1583 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1584 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1585 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1586 select CPU_SUPPORTS_32BIT_KERNEL
1587 select DMA_NONCOHERENT
1589 select SWAP_IO_SPACE
1590 select WEAK_ORDERING
1591 select CPU_SUPPORTS_HIGHMEM
1592 select CPU_HAS_PREFETCH
1594 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1597 bool "Netlogic XLR SoC"
1598 depends on SYS_HAS_CPU_XLR
1599 select CPU_SUPPORTS_32BIT_KERNEL
1600 select CPU_SUPPORTS_64BIT_KERNEL
1601 select CPU_SUPPORTS_HIGHMEM
1602 select CPU_SUPPORTS_HUGEPAGES
1603 select WEAK_ORDERING
1604 select WEAK_REORDERING_BEYOND_LLSC
1606 Netlogic Microsystems XLR/XLS processors.
1609 bool "Netlogic XLP SoC"
1610 depends on SYS_HAS_CPU_XLP
1611 select CPU_SUPPORTS_32BIT_KERNEL
1612 select CPU_SUPPORTS_64BIT_KERNEL
1613 select CPU_SUPPORTS_HIGHMEM
1614 select WEAK_ORDERING
1615 select WEAK_REORDERING_BEYOND_LLSC
1616 select CPU_HAS_PREFETCH
1618 select CPU_SUPPORTS_HUGEPAGES
1620 Netlogic Microsystems XLP processors.
1623 config CPU_MIPS32_3_5_FEATURES
1624 bool "MIPS32 Release 3.5 Features"
1625 depends on SYS_HAS_CPU_MIPS32_R3_5
1626 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1628 Choose this option to build a kernel for release 2 or later of the
1629 MIPS32 architecture including features from the 3.5 release such as
1630 support for Enhanced Virtual Addressing (EVA).
1632 config CPU_MIPS32_3_5_EVA
1633 bool "Enhanced Virtual Addressing (EVA)"
1634 depends on CPU_MIPS32_3_5_FEATURES
1638 Choose this option if you want to enable the Enhanced Virtual
1639 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1640 One of its primary benefits is an increase in the maximum size
1641 of lowmem (up to 3GB). If unsure, say 'N' here.
1643 config CPU_MIPS32_R5_FEATURES
1644 bool "MIPS32 Release 5 Features"
1645 depends on SYS_HAS_CPU_MIPS32_R5
1646 depends on CPU_MIPS32_R2
1648 Choose this option to build a kernel for release 2 or later of the
1649 MIPS32 architecture including features from release 5 such as
1650 support for Extended Physical Addressing (XPA).
1652 config CPU_MIPS32_R5_XPA
1653 bool "Extended Physical Addressing (XPA)"
1654 depends on CPU_MIPS32_R5_FEATURES
1656 depends on !PAGE_SIZE_4KB
1657 depends on SYS_SUPPORTS_HIGHMEM
1660 select ARCH_PHYS_ADDR_T_64BIT
1663 Choose this option if you want to enable the Extended Physical
1664 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1665 benefit is to increase physical addressing equal to or greater
1666 than 40 bits. Note that this has the side effect of turning on
1667 64-bit addressing which in turn makes the PTEs 64-bit in size.
1668 If unsure, say 'N' here.
1671 config CPU_NOP_WORKAROUNDS
1674 config CPU_JUMP_WORKAROUNDS
1677 config CPU_LOONGSON2F_WORKAROUNDS
1678 bool "Loongson 2F Workarounds"
1680 select CPU_NOP_WORKAROUNDS
1681 select CPU_JUMP_WORKAROUNDS
1683 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1684 require workarounds. Without workarounds the system may hang
1685 unexpectedly. For more information please refer to the gas
1686 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1688 Loongson 2F03 and later have fixed these issues and no workarounds
1689 are needed. The workarounds have no significant side effect on them
1690 but may decrease the performance of the system so this option should
1691 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1694 If unsure, please say Y.
1695 endif # CPU_LOONGSON2F
1697 config SYS_SUPPORTS_ZBOOT
1699 select HAVE_KERNEL_GZIP
1700 select HAVE_KERNEL_BZIP2
1701 select HAVE_KERNEL_LZ4
1702 select HAVE_KERNEL_LZMA
1703 select HAVE_KERNEL_LZO
1704 select HAVE_KERNEL_XZ
1706 config SYS_SUPPORTS_ZBOOT_UART16550
1708 select SYS_SUPPORTS_ZBOOT
1710 config CPU_LOONGSON2
1712 select CPU_SUPPORTS_32BIT_KERNEL
1713 select CPU_SUPPORTS_64BIT_KERNEL
1714 select CPU_SUPPORTS_HIGHMEM
1715 select CPU_SUPPORTS_HUGEPAGES
1717 config CPU_LOONGSON1
1721 select CPU_HAS_PREFETCH
1722 select CPU_SUPPORTS_32BIT_KERNEL
1723 select CPU_SUPPORTS_HIGHMEM
1724 select CPU_SUPPORTS_CPUFREQ
1726 config CPU_BMIPS32_3300
1727 select SMP_UP if SMP
1730 config CPU_BMIPS4350
1732 select SYS_SUPPORTS_SMP
1733 select SYS_SUPPORTS_HOTPLUG_CPU
1735 config CPU_BMIPS4380
1737 select MIPS_L1_CACHE_SHIFT_6
1738 select SYS_SUPPORTS_SMP
1739 select SYS_SUPPORTS_HOTPLUG_CPU
1741 config CPU_BMIPS5000
1743 select MIPS_CPU_SCACHE
1744 select MIPS_L1_CACHE_SHIFT_7
1745 select SYS_SUPPORTS_SMP
1746 select SYS_SUPPORTS_HOTPLUG_CPU
1748 config SYS_HAS_CPU_LOONGSON3
1750 select CPU_SUPPORTS_CPUFREQ
1752 config SYS_HAS_CPU_LOONGSON2E
1755 config SYS_HAS_CPU_LOONGSON2F
1757 select CPU_SUPPORTS_CPUFREQ
1758 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1759 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1761 config SYS_HAS_CPU_LOONGSON1B
1764 config SYS_HAS_CPU_MIPS32_R1
1767 config SYS_HAS_CPU_MIPS32_R2
1770 config SYS_HAS_CPU_MIPS32_R3_5
1773 config SYS_HAS_CPU_MIPS32_R5
1776 config SYS_HAS_CPU_MIPS32_R6
1779 config SYS_HAS_CPU_MIPS64_R1
1782 config SYS_HAS_CPU_MIPS64_R2
1785 config SYS_HAS_CPU_MIPS64_R6
1788 config SYS_HAS_CPU_R3000
1791 config SYS_HAS_CPU_TX39XX
1794 config SYS_HAS_CPU_VR41XX
1797 config SYS_HAS_CPU_R4300
1800 config SYS_HAS_CPU_R4X00
1803 config SYS_HAS_CPU_TX49XX
1806 config SYS_HAS_CPU_R5000
1809 config SYS_HAS_CPU_R5432
1812 config SYS_HAS_CPU_R5500
1815 config SYS_HAS_CPU_R6000
1818 config SYS_HAS_CPU_NEVADA
1821 config SYS_HAS_CPU_R8000
1824 config SYS_HAS_CPU_R10000
1827 config SYS_HAS_CPU_RM7000
1830 config SYS_HAS_CPU_SB1
1833 config SYS_HAS_CPU_CAVIUM_OCTEON
1836 config SYS_HAS_CPU_BMIPS
1839 config SYS_HAS_CPU_BMIPS32_3300
1841 select SYS_HAS_CPU_BMIPS
1843 config SYS_HAS_CPU_BMIPS4350
1845 select SYS_HAS_CPU_BMIPS
1847 config SYS_HAS_CPU_BMIPS4380
1849 select SYS_HAS_CPU_BMIPS
1851 config SYS_HAS_CPU_BMIPS5000
1853 select SYS_HAS_CPU_BMIPS
1855 config SYS_HAS_CPU_XLR
1858 config SYS_HAS_CPU_XLP
1861 config MIPS_MALTA_PM
1862 depends on MIPS_MALTA
1868 # CPU may reorder R->R, R->W, W->R, W->W
1869 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1871 config WEAK_ORDERING
1875 # CPU may reorder reads and writes beyond LL/SC
1876 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1878 config WEAK_REORDERING_BEYOND_LLSC
1883 # These two indicate any level of the MIPS32 and MIPS64 architecture
1887 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1891 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1894 # These two indicate the revision of the architecture, either Release 1 or Release 2
1898 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1902 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1907 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1916 config SYS_SUPPORTS_32BIT_KERNEL
1918 config SYS_SUPPORTS_64BIT_KERNEL
1920 config CPU_SUPPORTS_32BIT_KERNEL
1922 config CPU_SUPPORTS_64BIT_KERNEL
1924 config CPU_SUPPORTS_CPUFREQ
1926 config CPU_SUPPORTS_ADDRWINCFG
1928 config CPU_SUPPORTS_HUGEPAGES
1930 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1932 config MIPS_PGD_C0_CONTEXT
1934 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1937 # Set to y for ptrace access to watch registers.
1939 config HARDWARE_WATCHPOINTS
1941 default y if CPU_MIPSR1 || CPU_MIPSR2
1946 prompt "Kernel code model"
1948 You should only select this option if you have a workload that
1949 actually benefits from 64-bit processing or if your machine has
1950 large memory. You will only be presented a single option in this
1951 menu if your system does not support both 32-bit and 64-bit kernels.
1954 bool "32-bit kernel"
1955 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1958 Select this option if you want to build a 32-bit kernel.
1960 bool "64-bit kernel"
1961 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1963 Select this option if you want to build a 64-bit kernel.
1968 bool "KVM Guest Kernel"
1969 depends on BROKEN_ON_SMP
1971 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1973 config KVM_GUEST_TIMER_FREQ
1974 int "Count/Compare Timer Frequency (MHz)"
1975 depends on KVM_GUEST
1978 Set this to non-zero if building a guest kernel for KVM to skip RTC
1979 emulation when determining guest CPU Frequency. Instead, the guest's
1980 timer frequency is specified directly.
1983 prompt "Kernel page size"
1984 default PAGE_SIZE_4KB
1986 config PAGE_SIZE_4KB
1988 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
1990 This option select the standard 4kB Linux page size. On some
1991 R3000-family processors this is the only available page size. Using
1992 4kB page size will minimize memory consumption and is therefore
1993 recommended for low memory systems.
1995 config PAGE_SIZE_8KB
1997 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1999 Using 8kB page size will result in higher performance kernel at
2000 the price of higher memory consumption. This option is available
2001 only on R8000 and cnMIPS processors. Note that you will need a
2002 suitable Linux distribution to support this.
2004 config PAGE_SIZE_16KB
2006 depends on !CPU_R3000 && !CPU_TX39XX
2008 Using 16kB page size will result in higher performance kernel at
2009 the price of higher memory consumption. This option is available on
2010 all non-R3000 family processors. Note that you will need a suitable
2011 Linux distribution to support this.
2013 config PAGE_SIZE_32KB
2015 depends on CPU_CAVIUM_OCTEON
2017 Using 32kB page size will result in higher performance kernel at
2018 the price of higher memory consumption. This option is available
2019 only on cnMIPS cores. Note that you will need a suitable Linux
2020 distribution to support this.
2022 config PAGE_SIZE_64KB
2024 depends on !CPU_R3000 && !CPU_TX39XX
2026 Using 64kB page size will result in higher performance kernel at
2027 the price of higher memory consumption. This option is available on
2028 all non-R3000 family processor. Not that at the time of this
2029 writing this option is still high experimental.
2033 config FORCE_MAX_ZONEORDER
2034 int "Maximum zone order"
2035 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2036 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2037 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2038 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2039 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2040 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2044 The kernel memory allocator divides physically contiguous memory
2045 blocks into "zones", where each zone is a power of two number of
2046 pages. This option selects the largest power of two that the kernel
2047 keeps in the memory allocator. If you need to allocate very large
2048 blocks of physically contiguous memory, then you may need to
2049 increase this value.
2051 This config option is actually maximum order plus one. For example,
2052 a value of 11 means that the largest free memory block is 2^10 pages.
2054 The page size is not necessarily 4KB. Keep this in mind
2055 when choosing a value for this option.
2060 config IP22_CPU_SCACHE
2065 # Support for a MIPS32 / MIPS64 style S-caches
2067 config MIPS_CPU_SCACHE
2071 config R5000_CPU_SCACHE
2075 config RM7000_CPU_SCACHE
2079 config SIBYTE_DMA_PAGEOPS
2080 bool "Use DMA to clear/copy pages"
2083 Instead of using the CPU to zero and copy pages, use a Data Mover
2084 channel. These DMA channels are otherwise unused by the standard
2085 SiByte Linux port. Seems to give a small performance benefit.
2087 config CPU_HAS_PREFETCH
2090 config CPU_GENERIC_DUMP_TLB
2092 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2096 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2098 config CPU_R4K_CACHE_TLB
2100 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2103 bool "MIPS MT SMP support (1 TC on each available VPE)"
2104 depends on SYS_SUPPORTS_MULTITHREADING
2105 select CPU_MIPSR2_IRQ_VI
2106 select CPU_MIPSR2_IRQ_EI
2112 select SYS_SUPPORTS_SMP
2113 select SYS_SUPPORTS_SCHED_SMT
2114 select MIPS_PERF_SHARED_TC_COUNTERS
2116 This is a kernel model which is known as SMVP. This is supported
2117 on cores with the MT ASE and uses the available VPEs to implement
2118 virtual processors which supports SMP. This is equivalent to the
2119 Intel Hyperthreading feature. For further information go to
2120 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2126 bool "SMT (multithreading) scheduler support"
2127 depends on SYS_SUPPORTS_SCHED_SMT
2130 SMT scheduler support improves the CPU scheduler's decision making
2131 when dealing with MIPS MT enabled cores at a cost of slightly
2132 increased overhead in some places. If unsure say N here.
2134 config SYS_SUPPORTS_SCHED_SMT
2137 config SYS_SUPPORTS_MULTITHREADING
2140 config MIPS_MT_FPAFF
2141 bool "Dynamic FPU affinity for FP-intensive threads"
2143 depends on MIPS_MT_SMP
2145 config MIPSR2_TO_R6_EMULATOR
2146 bool "MIPS R2-to-R6 emulator"
2147 depends on CPU_MIPSR6 && !SMP
2150 Choose this option if you want to run non-R6 MIPS userland code.
2151 Even if you say 'Y' here, the emulator will still be disabled by
2152 default. You can enable it using the 'mipsr2emu' kernel option.
2153 The only reason this is a build-time option is to save ~14K from the
2155 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2156 depends on SMP && CPU_MIPSR6
2158 config MIPS_VPE_LOADER
2159 bool "VPE loader support."
2160 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2161 select CPU_MIPSR2_IRQ_VI
2162 select CPU_MIPSR2_IRQ_EI
2165 Includes a loader for loading an elf relocatable object
2166 onto another VPE and running it.
2168 config MIPS_VPE_LOADER_CMP
2171 depends on MIPS_VPE_LOADER && MIPS_CMP
2173 config MIPS_VPE_LOADER_MT
2176 depends on MIPS_VPE_LOADER && !MIPS_CMP
2178 config MIPS_VPE_LOADER_TOM
2179 bool "Load VPE program into memory hidden from linux"
2180 depends on MIPS_VPE_LOADER
2183 The loader can use memory that is present but has been hidden from
2184 Linux using the kernel command line option "mem=xxMB". It's up to
2185 you to ensure the amount you put in the option and the space your
2186 program requires is less or equal to the amount physically present.
2188 config MIPS_VPE_APSP_API
2189 bool "Enable support for AP/SP API (RTLX)"
2190 depends on MIPS_VPE_LOADER
2193 config MIPS_VPE_APSP_API_CMP
2196 depends on MIPS_VPE_APSP_API && MIPS_CMP
2198 config MIPS_VPE_APSP_API_MT
2201 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2204 bool "MIPS CMP framework support (DEPRECATED)"
2205 depends on SYS_SUPPORTS_MIPS_CMP
2209 select SYS_SUPPORTS_SMP
2210 select WEAK_ORDERING
2213 Select this if you are using a bootloader which implements the "CMP
2214 framework" protocol (ie. YAMON) and want your kernel to make use of
2215 its ability to start secondary CPUs.
2217 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2221 bool "MIPS Coherent Processing System support"
2222 depends on SYS_SUPPORTS_MIPS_CPS && !64BIT
2225 select MIPS_CPS_PM if HOTPLUG_CPU
2228 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2229 select SYS_SUPPORTS_HOTPLUG_CPU
2230 select SYS_SUPPORTS_SMP
2231 select WEAK_ORDERING
2233 Select this if you wish to run an SMP kernel across multiple cores
2234 within a MIPS Coherent Processing System. When this option is
2235 enabled the kernel will probe for other cores and boot them with
2236 no external assistance. It is safe to enable this when hardware
2237 support is unavailable.
2253 config SB1_PASS_1_WORKAROUNDS
2255 depends on CPU_SB1_PASS_1
2258 config SB1_PASS_2_WORKAROUNDS
2260 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2263 config SB1_PASS_2_1_WORKAROUNDS
2265 depends on CPU_SB1 && CPU_SB1_PASS_2
2269 config ARCH_PHYS_ADDR_T_64BIT
2273 prompt "SmartMIPS or microMIPS ASE support"
2275 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2278 Select this if you want neither microMIPS nor SmartMIPS support
2280 config CPU_HAS_SMARTMIPS
2281 depends on SYS_SUPPORTS_SMARTMIPS
2284 SmartMIPS is a extension of the MIPS32 architecture aimed at
2285 increased security at both hardware and software level for
2286 smartcards. Enabling this option will allow proper use of the
2287 SmartMIPS instructions by Linux applications. However a kernel with
2288 this option will not work on a MIPS core without SmartMIPS core. If
2289 you don't know you probably don't have SmartMIPS and should say N
2292 config CPU_MICROMIPS
2293 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2296 When this option is enabled the kernel will be built using the
2302 bool "Support for the MIPS SIMD Architecture (EXPERIMENTAL)"
2303 depends on CPU_SUPPORTS_MSA
2304 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2306 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2307 and a set of SIMD instructions to operate on them. When this option
2308 is enabled the kernel will support allocating & switching MSA
2309 vector register contexts. If you know that your kernel will only be
2310 running on CPUs which do not support MSA or that your userland will
2311 not be making use of it then you may wish to say N here to reduce
2312 the size & complexity of your kernel.
2323 # Vectored interrupt mode is an R2 feature
2325 config CPU_MIPSR2_IRQ_VI
2329 # Extended interrupt mode is an R2 feature
2331 config CPU_MIPSR2_IRQ_EI
2336 depends on !CPU_R3000
2342 config CPU_DADDI_WORKAROUNDS
2345 config CPU_R4000_WORKAROUNDS
2347 select CPU_R4400_WORKAROUNDS
2349 config CPU_R4400_WORKAROUNDS
2353 # - Highmem only makes sense for the 32-bit kernel.
2354 # - The current highmem code will only work properly on physically indexed
2355 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2356 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2357 # moment we protect the user and offer the highmem option only on machines
2358 # where it's known to be safe. This will not offer highmem on a few systems
2359 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2360 # indexed CPUs but we're playing safe.
2361 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2362 # know they might have memory configurations that could make use of highmem
2366 bool "High Memory Support"
2367 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2369 config CPU_SUPPORTS_HIGHMEM
2372 config SYS_SUPPORTS_HIGHMEM
2375 config SYS_SUPPORTS_SMARTMIPS
2378 config SYS_SUPPORTS_MICROMIPS
2381 config SYS_SUPPORTS_MIPS16
2384 This option must be set if a kernel might be executed on a MIPS16-
2385 enabled CPU even if MIPS16 is not actually being used. In other
2386 words, it makes the kernel MIPS16-tolerant.
2388 config CPU_SUPPORTS_MSA
2391 config ARCH_FLATMEM_ENABLE
2393 depends on !NUMA && !CPU_LOONGSON2
2395 config ARCH_DISCONTIGMEM_ENABLE
2397 default y if SGI_IP27
2399 Say Y to support efficient handling of discontiguous physical memory,
2400 for architectures which are either NUMA (Non-Uniform Memory Access)
2401 or have huge holes in the physical address space for other reasons.
2402 See <file:Documentation/vm/numa> for more.
2404 config ARCH_SPARSEMEM_ENABLE
2406 select SPARSEMEM_STATIC
2410 depends on SYS_SUPPORTS_NUMA
2412 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2413 Access). This option improves performance on systems with more
2414 than two nodes; on two node systems it is generally better to
2415 leave it disabled; on single node systems disable this option
2418 config SYS_SUPPORTS_NUMA
2424 depends on NEED_MULTIPLE_NODES
2426 config HW_PERF_EVENTS
2427 bool "Enable hardware performance counter support for perf events"
2428 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2431 Enable hardware performance counter support for perf events. If
2432 disabled, perf events will use software events only.
2437 bool "Multi-Processing support"
2438 depends on SYS_SUPPORTS_SMP
2440 This enables support for systems with more than one CPU. If you have
2441 a system with only one CPU, say N. If you have a system with more
2442 than one CPU, say Y.
2444 If you say N here, the kernel will run on uni- and multiprocessor
2445 machines, but will use only one CPU of a multiprocessor machine. If
2446 you say Y here, the kernel will run on many, but not all,
2447 uniprocessor machines. On a uniprocessor machine, the kernel
2448 will run faster if you say N here.
2450 People using multiprocessor machines who say Y here should also say
2451 Y to "Enhanced Real Time Clock Support", below.
2453 See also the SMP-HOWTO available at
2454 <http://www.tldp.org/docs.html#howto>.
2456 If you don't know what to do here, say N.
2461 config SYS_SUPPORTS_MIPS_CMP
2464 config SYS_SUPPORTS_MIPS_CPS
2467 config SYS_SUPPORTS_SMP
2470 config NR_CPUS_DEFAULT_4
2473 config NR_CPUS_DEFAULT_8
2476 config NR_CPUS_DEFAULT_16
2479 config NR_CPUS_DEFAULT_32
2482 config NR_CPUS_DEFAULT_64
2486 int "Maximum number of CPUs (2-256)"
2489 default "4" if NR_CPUS_DEFAULT_4
2490 default "8" if NR_CPUS_DEFAULT_8
2491 default "16" if NR_CPUS_DEFAULT_16
2492 default "32" if NR_CPUS_DEFAULT_32
2493 default "64" if NR_CPUS_DEFAULT_64
2495 This allows you to specify the maximum number of CPUs which this
2496 kernel will support. The maximum supported value is 32 for 32-bit
2497 kernel and 64 for 64-bit kernels; the minimum value which makes
2498 sense is 1 for Qemu (useful only for kernel debugging purposes)
2499 and 2 for all others.
2501 This is purely to save memory - each supported CPU adds
2502 approximately eight kilobytes to the kernel image. For best
2503 performance should round up your number of processors to the next
2506 config MIPS_PERF_SHARED_TC_COUNTERS
2510 # Timer Interrupt Frequency Configuration
2514 prompt "Timer frequency"
2517 Allows the configuration of the timer frequency.
2520 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2523 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2526 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2529 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2532 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2535 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2538 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2542 config SYS_SUPPORTS_48HZ
2545 config SYS_SUPPORTS_100HZ
2548 config SYS_SUPPORTS_128HZ
2551 config SYS_SUPPORTS_250HZ
2554 config SYS_SUPPORTS_256HZ
2557 config SYS_SUPPORTS_1000HZ
2560 config SYS_SUPPORTS_1024HZ
2563 config SYS_SUPPORTS_ARBIT_HZ
2565 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2566 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2567 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2568 !SYS_SUPPORTS_1024HZ
2573 default 100 if HZ_100
2574 default 128 if HZ_128
2575 default 250 if HZ_250
2576 default 256 if HZ_256
2577 default 1000 if HZ_1000
2578 default 1024 if HZ_1024
2581 def_bool HIGH_RES_TIMERS
2583 source "kernel/Kconfig.preempt"
2586 bool "Kexec system call"
2588 kexec is a system call that implements the ability to shutdown your
2589 current kernel, and to start another kernel. It is like a reboot
2590 but it is independent of the system firmware. And like a reboot
2591 you can start any kernel with it, not just Linux.
2593 The name comes from the similarity to the exec system call.
2595 It is an ongoing process to be certain the hardware in a machine
2596 is properly shutdown, so do not be surprised if this code does not
2597 initially work for you. As of this writing the exact hardware
2598 interface is strongly in flux, so no good recommendation can be
2602 bool "Kernel crash dumps"
2604 Generate crash dump after being started by kexec.
2605 This should be normally only set in special crash dump kernels
2606 which are loaded in the main kernel with kexec-tools into
2607 a specially reserved region and then later executed after
2608 a crash by kdump/kexec. The crash dump kernel must be compiled
2609 to a memory address not used by the main kernel or firmware using
2612 config PHYSICAL_START
2613 hex "Physical address where the kernel is loaded"
2614 default "0xffffffff84000000" if 64BIT
2615 default "0x84000000" if 32BIT
2616 depends on CRASH_DUMP
2618 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2619 If you plan to use kernel for capturing the crash dump change
2620 this value to start of the reserved region (the "X" value as
2621 specified in the "crashkernel=YM@XM" command line boot parameter
2622 passed to the panic-ed kernel).
2625 bool "Enable seccomp to safely compute untrusted bytecode"
2629 This kernel feature is useful for number crunching applications
2630 that may need to compute untrusted bytecode during their
2631 execution. By using pipes or other transports made available to
2632 the process as file descriptors supporting the read/write
2633 syscalls, it's possible to isolate those applications in
2634 their own address space using seccomp. Once seccomp is
2635 enabled via /proc/<pid>/seccomp, it cannot be disabled
2636 and the task is only allowed to execute a few safe syscalls
2637 defined by each seccomp mode.
2639 If unsure, say Y. Only embedded should say N here.
2641 config MIPS_O32_FP64_SUPPORT
2642 bool "Support for O32 binaries using 64-bit FP (EXPERIMENTAL)"
2643 depends on 32BIT || MIPS32_O32
2645 When this is enabled, the kernel will support use of 64-bit floating
2646 point registers with binaries using the O32 ABI along with the
2647 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2648 32-bit MIPS systems this support is at the cost of increasing the
2649 size and complexity of the compiled FPU emulator. Thus if you are
2650 running a MIPS32 system and know that none of your userland binaries
2651 will require 64-bit floating point, you may wish to reduce the size
2652 of your kernel & potentially improve FP emulation performance by
2655 Although binutils currently supports use of this flag the details
2656 concerning its effect upon the O32 ABI in userland are still being
2657 worked on. In order to avoid userland becoming dependant upon current
2658 behaviour before the details have been finalised, this option should
2659 be considered experimental and only enabled by those working upon
2667 select OF_EARLY_FLATTREE
2675 config LOCKDEP_SUPPORT
2679 config STACKTRACE_SUPPORT
2683 config PGTABLE_LEVELS
2685 default 3 if 64BIT && !PAGE_SIZE_64KB
2688 source "init/Kconfig"
2690 source "kernel/Kconfig.freezer"
2692 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2700 bool "Support for PCI controller"
2701 depends on HW_HAS_PCI
2703 select NO_GENERIC_PCI_IOPORT_MAP
2705 Find out whether you have a PCI motherboard. PCI is the name of a
2706 bus system, i.e. the way the CPU talks to the other stuff inside
2707 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2711 bool "Support for HT-linked PCI"
2713 depends on CPU_LOONGSON3
2717 Loongson family machines use Hyper-Transport bus for inter-core
2718 connection and device connection. The PCI bus is a subordinate
2719 linked at HT. Choose Y for Loongson-3 based machines.
2724 source "drivers/pci/Kconfig"
2726 source "drivers/pci/pcie/Kconfig"
2729 # ISA support is now enabled via select. Too many systems still have the one
2730 # or other ISA chip on the board that users don't know about so don't expect
2731 # users to choose the right thing ...
2738 depends on HW_HAS_EISA
2740 select GENERIC_ISA_DMA
2742 The Extended Industry Standard Architecture (EISA) bus was
2743 developed as an open alternative to the IBM MicroChannel bus.
2745 The EISA bus provided some of the features of the IBM MicroChannel
2746 bus while maintaining backward compatibility with cards made for
2747 the older ISA bus. The EISA bus saw limited use between 1988 and
2748 1995 when it was made obsolete by the PCI bus.
2750 Say Y here if you are building a kernel for an EISA-based machine.
2754 source "drivers/eisa/Kconfig"
2757 bool "TURBOchannel support"
2758 depends on MACH_DECSTATION
2760 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2761 processors. TURBOchannel programming specifications are available
2763 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2765 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2766 Linux driver support status is documented at:
2767 <http://www.linux-mips.org/wiki/DECstation>
2777 select MIPS_EXTERNAL_TIMER
2785 source "drivers/pcmcia/Kconfig"
2787 source "drivers/pci/hotplug/Kconfig"
2790 tristate "RapidIO support"
2794 If you say Y here, the kernel will include drivers and
2795 infrastructure code to support RapidIO interconnect devices.
2797 source "drivers/rapidio/Kconfig"
2801 menu "Executable file formats"
2803 source "fs/Kconfig.binfmt"
2808 config MIPS32_COMPAT
2814 config SYSVIPC_COMPAT
2818 bool "Kernel support for o32 binaries"
2820 select ARCH_WANT_OLD_COMPAT_IPC
2822 select MIPS32_COMPAT
2823 select SYSVIPC_COMPAT if SYSVIPC
2825 Select this option if you want to run o32 binaries. These are pure
2826 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2827 existing binaries are in this format.
2832 bool "Kernel support for n32 binaries"
2835 select MIPS32_COMPAT
2836 select SYSVIPC_COMPAT if SYSVIPC
2838 Select this option if you want to run n32 binaries. These are
2839 64-bit binaries using 32-bit quantities for addressing and certain
2840 data that would normally be 64-bit. They are used in special
2847 default y if MIPS32_O32 || MIPS32_N32
2851 menu "Power management options"
2853 config ARCH_HIBERNATION_POSSIBLE
2855 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2857 config ARCH_SUSPEND_POSSIBLE
2859 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2861 source "kernel/power/Kconfig"
2865 config MIPS_EXTERNAL_TIMER
2868 menu "CPU Power Management"
2870 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2871 source "drivers/cpufreq/Kconfig"
2874 source "drivers/cpuidle/Kconfig"
2878 source "net/Kconfig"
2880 source "drivers/Kconfig"
2882 source "drivers/firmware/Kconfig"
2886 source "arch/mips/Kconfig.debug"
2888 source "security/Kconfig"
2890 source "crypto/Kconfig"
2892 source "lib/Kconfig"
2894 source "arch/mips/kvm/Kconfig"