4 select ARCH_SUPPORTS_UPROBES
5 select ARCH_MIGHT_HAVE_PC_PARPORT
6 select ARCH_MIGHT_HAVE_PC_SERIO
7 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
8 select ARCH_USE_BUILTIN_BSWAP
9 select HAVE_CONTEXT_TRACKING
10 select HAVE_GENERIC_DMA_COHERENT
13 select HAVE_PERF_EVENTS
14 select PERF_USE_VMALLOC
16 select HAVE_ARCH_SECCOMP_FILTER
17 select HAVE_ARCH_TRACEHOOK
18 select HAVE_CBPF_JIT if !CPU_MICROMIPS
19 select HAVE_FUNCTION_TRACER
20 select HAVE_DYNAMIC_FTRACE
21 select HAVE_FTRACE_MCOUNT_RECORD
22 select HAVE_C_RECORDMCOUNT
23 select HAVE_FUNCTION_GRAPH_TRACER
25 select HAVE_KRETPROBES
26 select HAVE_SYSCALL_TRACEPOINTS
27 select HAVE_DEBUG_KMEMLEAK
28 select HAVE_SYSCALL_TRACEPOINTS
29 select ARCH_HAS_ELF_RANDOMIZE
30 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
31 select RTC_LIB if !MACH_LOONGSON64
32 select GENERIC_ATOMIC64 if !64BIT
33 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
34 select HAVE_DMA_CONTIGUOUS
35 select HAVE_DMA_API_DEBUG
36 select GENERIC_IRQ_PROBE
37 select GENERIC_IRQ_SHOW
38 select GENERIC_PCI_IOMAP
39 select HAVE_ARCH_JUMP_LABEL
40 select ARCH_WANT_IPC_PARSE_VERSION
41 select IRQ_FORCED_THREADING
43 select HAVE_MEMBLOCK_NODE_MAP
44 select ARCH_DISCARD_MEMBLOCK
45 select GENERIC_SMP_IDLE_THREAD
46 select BUILDTIME_EXTABLE_SORT
47 select GENERIC_CLOCKEVENTS
48 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
49 select GENERIC_CMOS_UPDATE
50 select HAVE_MOD_ARCH_SPECIFIC
52 select MODULES_USE_ELF_REL if MODULES
53 select MODULES_USE_ELF_RELA if MODULES && 64BIT
54 select CLONE_BACKWARDS
55 select HAVE_DEBUG_STACKOVERFLOW
56 select HAVE_CC_STACKPROTECTOR
57 select CPU_PM if CPU_IDLE
58 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
59 select ARCH_BINFMT_ELF_STATE
60 select SYSCTL_EXCEPTION_TRACE
61 select HAVE_VIRT_CPU_ACCOUNTING_GEN
62 select HAVE_IRQ_TIME_ACCOUNTING
63 select GENERIC_TIME_VSYSCALL
64 select ARCH_CLOCKSOURCE_DATA
66 menu "Machine selection"
73 bool "Alchemy processor based machines"
74 select ARCH_PHYS_ADDR_T_64BIT
78 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
79 select SYS_HAS_CPU_MIPS32_R1
80 select SYS_SUPPORTS_32BIT_KERNEL
81 select SYS_SUPPORTS_APM_EMULATION
83 select SYS_SUPPORTS_ZBOOT
87 bool "Texas Instruments AR7"
89 select DMA_NONCOHERENT
95 select SYS_HAS_CPU_MIPS32_R1
96 select SYS_HAS_EARLY_PRINTK
97 select SYS_SUPPORTS_32BIT_KERNEL
98 select SYS_SUPPORTS_LITTLE_ENDIAN
99 select SYS_SUPPORTS_MIPS16
100 select SYS_SUPPORTS_ZBOOT_UART16550
105 Support for the Texas Instruments AR7 System-on-a-Chip
106 family: TNETD7100, 7200 and 7300.
109 bool "Atheros AR231x/AR531x SoC support"
112 select DMA_NONCOHERENT
115 select SYS_HAS_CPU_MIPS32_R1
116 select SYS_SUPPORTS_BIG_ENDIAN
117 select SYS_SUPPORTS_32BIT_KERNEL
118 select SYS_HAS_EARLY_PRINTK
120 Support for Atheros AR231x and Atheros AR531x based boards
123 bool "Atheros AR71XX/AR724X/AR913X based boards"
124 select ARCH_HAS_RESET_CONTROLLER
128 select DMA_NONCOHERENT
135 select SYS_HAS_CPU_MIPS32_R2
136 select SYS_HAS_EARLY_PRINTK
137 select SYS_SUPPORTS_32BIT_KERNEL
138 select SYS_SUPPORTS_BIG_ENDIAN
139 select SYS_SUPPORTS_MIPS16
140 select SYS_SUPPORTS_ZBOOT
143 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
146 bool "Broadcom Generic BMIPS kernel"
148 select NO_EXCEPT_FILL
154 select BCM6345_L1_IRQ
155 select BCM7038_L1_IRQ
156 select BCM7120_L2_IRQ
157 select BRCMSTB_L2_IRQ
159 select DMA_NONCOHERENT
160 select SYS_SUPPORTS_32BIT_KERNEL
161 select SYS_SUPPORTS_LITTLE_ENDIAN
162 select SYS_SUPPORTS_BIG_ENDIAN
163 select SYS_SUPPORTS_HIGHMEM
164 select SYS_HAS_CPU_BMIPS32_3300
165 select SYS_HAS_CPU_BMIPS4350
166 select SYS_HAS_CPU_BMIPS4380
167 select SYS_HAS_CPU_BMIPS5000
169 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
170 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
171 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
172 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
174 Build a generic DT-based kernel image that boots on select
175 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
176 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
177 must be set appropriately for your board.
180 bool "Broadcom BCM47XX based boards"
184 select DMA_NONCOHERENT
187 select SYS_HAS_CPU_MIPS32_R1
188 select NO_EXCEPT_FILL
189 select SYS_SUPPORTS_32BIT_KERNEL
190 select SYS_SUPPORTS_LITTLE_ENDIAN
191 select SYS_SUPPORTS_MIPS16
192 select SYS_HAS_EARLY_PRINTK
193 select USE_GENERIC_EARLY_PRINTK_8250
195 select LEDS_GPIO_REGISTER
198 Support for BCM47XX based boards
201 bool "Broadcom BCM63XX based boards"
206 select DMA_NONCOHERENT
208 select SYS_SUPPORTS_32BIT_KERNEL
209 select SYS_SUPPORTS_BIG_ENDIAN
210 select SYS_HAS_EARLY_PRINTK
214 select MIPS_L1_CACHE_SHIFT_4
216 Support for BCM63XX based boards
223 select DMA_NONCOHERENT
229 select PCI_GT64XXX_PCI0
231 select SYS_HAS_CPU_NEVADA
232 select SYS_HAS_EARLY_PRINTK
233 select SYS_SUPPORTS_32BIT_KERNEL
234 select SYS_SUPPORTS_64BIT_KERNEL
235 select SYS_SUPPORTS_LITTLE_ENDIAN
236 select USE_GENERIC_EARLY_PRINTK_8250
238 config MACH_DECSTATION
242 select CEVT_R4K if CPU_R4X00
244 select CSRC_R4K if CPU_R4X00
245 select CPU_DADDI_WORKAROUNDS if 64BIT
246 select CPU_R4000_WORKAROUNDS if 64BIT
247 select CPU_R4400_WORKAROUNDS if 64BIT
248 select DMA_NONCOHERENT
251 select SYS_HAS_CPU_R3000
252 select SYS_HAS_CPU_R4X00
253 select SYS_SUPPORTS_32BIT_KERNEL
254 select SYS_SUPPORTS_64BIT_KERNEL
255 select SYS_SUPPORTS_LITTLE_ENDIAN
256 select SYS_SUPPORTS_128HZ
257 select SYS_SUPPORTS_256HZ
258 select SYS_SUPPORTS_1024HZ
259 select MIPS_L1_CACHE_SHIFT_4
261 This enables support for DEC's MIPS based workstations. For details
262 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
263 DECstation porting pages on <http://decstation.unix-ag.org/>.
265 If you have one of the following DECstation Models you definitely
266 want to choose R4xx0 for the CPU Type:
273 otherwise choose R3000.
276 bool "Jazz family of machines"
279 select ARCH_MAY_HAVE_PC_FDC
282 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
283 select GENERIC_ISA_DMA
284 select HAVE_PCSPKR_PLATFORM
289 select SYS_HAS_CPU_R4X00
290 select SYS_SUPPORTS_32BIT_KERNEL
291 select SYS_SUPPORTS_64BIT_KERNEL
292 select SYS_SUPPORTS_100HZ
294 This a family of machines based on the MIPS R4030 chipset which was
295 used by several vendors to build RISC/os and Windows NT workstations.
296 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
297 Olivetti M700-10 workstations.
300 bool "Ingenic SoC based machines"
301 select SYS_SUPPORTS_32BIT_KERNEL
302 select SYS_SUPPORTS_LITTLE_ENDIAN
303 select SYS_SUPPORTS_ZBOOT_UART16550
304 select DMA_NONCOHERENT
308 select GENERIC_IRQ_CHIP
314 bool "Lantiq based platforms"
315 select DMA_NONCOHERENT
319 select SYS_HAS_CPU_MIPS32_R1
320 select SYS_HAS_CPU_MIPS32_R2
321 select SYS_SUPPORTS_BIG_ENDIAN
322 select SYS_SUPPORTS_32BIT_KERNEL
323 select SYS_SUPPORTS_MIPS16
324 select SYS_SUPPORTS_MULTITHREADING
325 select SYS_HAS_EARLY_PRINTK
332 select PINCTRL_LANTIQ
333 select ARCH_HAS_RESET_CONTROLLER
334 select RESET_CONTROLLER
337 bool "LASAT Networks platforms"
341 select DMA_NONCOHERENT
342 select SYS_HAS_EARLY_PRINTK
345 select PCI_GT64XXX_PCI0
347 select R5000_CPU_SCACHE
348 select SYS_HAS_CPU_R5000
349 select SYS_SUPPORTS_32BIT_KERNEL
350 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
351 select SYS_SUPPORTS_LITTLE_ENDIAN
353 config MACH_LOONGSON32
354 bool "Loongson-1 family of machines"
355 select SYS_SUPPORTS_ZBOOT
357 This enables support for the Loongson-1 family of machines.
359 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
360 the Institute of Computing Technology (ICT), Chinese Academy of
363 config MACH_LOONGSON64
364 bool "Loongson-2/3 family of machines"
365 select SYS_SUPPORTS_ZBOOT
367 This enables the support of Loongson-2/3 family of machines.
369 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
370 family of multi-core CPUs. They are both 64-bit general-purpose
371 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
372 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
373 in the People's Republic of China. The chief architect is Professor
376 config MACH_PISTACHIO
377 bool "IMG Pistachio SoC based boards"
381 select CLKSRC_MIPS_GIC
384 select DMA_MAYBE_COHERENT
389 select MIPS_CPU_SCACHE
393 select SYS_HAS_CPU_MIPS32_R2
394 select SYS_SUPPORTS_32BIT_KERNEL
395 select SYS_SUPPORTS_LITTLE_ENDIAN
396 select SYS_SUPPORTS_MIPS_CPS
397 select SYS_SUPPORTS_MULTITHREADING
398 select SYS_SUPPORTS_ZBOOT
399 select SYS_HAS_EARLY_PRINTK
400 select USE_GENERIC_EARLY_PRINTK_8250
403 This enables support for the IMG Pistachio SoC platform.
406 bool "MIPSfpga Xilinx based boards"
416 select MIPS_CPU_SCACHE
417 select SYS_HAS_EARLY_PRINTK
418 select SYS_HAS_CPU_MIPS32_R2
419 select SYS_SUPPORTS_32BIT_KERNEL
420 select SYS_SUPPORTS_LITTLE_ENDIAN
421 select SYS_SUPPORTS_ZBOOT_UART16550
423 select USE_GENERIC_EARLY_PRINTK_8250
425 This enables support for the IMG University Program MIPSfpga platform.
428 bool "MIPS Malta board"
429 select ARCH_MAY_HAVE_PC_FDC
435 select CLKSRC_MIPS_GIC
437 select DMA_MAYBE_COHERENT
438 select GENERIC_ISA_DMA
439 select HAVE_PCSPKR_PLATFORM
446 select MIPS_CPU_SCACHE
447 select MIPS_L1_CACHE_SHIFT_6
448 select PCI_GT64XXX_PCI0
452 select SYS_HAS_CPU_MIPS32_R1
453 select SYS_HAS_CPU_MIPS32_R2
454 select SYS_HAS_CPU_MIPS32_R3_5
455 select SYS_HAS_CPU_MIPS32_R5
456 select SYS_HAS_CPU_MIPS32_R6
457 select SYS_HAS_CPU_MIPS64_R1
458 select SYS_HAS_CPU_MIPS64_R2
459 select SYS_HAS_CPU_MIPS64_R6
460 select SYS_HAS_CPU_NEVADA
461 select SYS_HAS_CPU_RM7000
462 select SYS_SUPPORTS_32BIT_KERNEL
463 select SYS_SUPPORTS_64BIT_KERNEL
464 select SYS_SUPPORTS_BIG_ENDIAN
465 select SYS_SUPPORTS_HIGHMEM
466 select SYS_SUPPORTS_LITTLE_ENDIAN
467 select SYS_SUPPORTS_MICROMIPS
468 select SYS_SUPPORTS_MIPS_CMP
469 select SYS_SUPPORTS_MIPS_CPS
470 select SYS_SUPPORTS_MIPS16
471 select SYS_SUPPORTS_MULTITHREADING
472 select SYS_SUPPORTS_SMARTMIPS
473 select SYS_SUPPORTS_ZBOOT
475 select ZONE_DMA32 if 64BIT
479 This enables support for the MIPS Technologies Malta evaluation
483 bool "Microchip PIC32 Family"
485 This enables support for the Microchip PIC32 family of platforms.
487 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
491 bool "MIPS SEAD3 board"
497 select CLKSRC_MIPS_GIC
499 select CPU_MIPSR2_IRQ_VI
500 select CPU_MIPSR2_IRQ_EI
501 select DMA_NONCOHERENT
506 select SYS_HAS_CPU_MIPS32_R1
507 select SYS_HAS_CPU_MIPS32_R2
508 select SYS_HAS_CPU_MIPS64_R1
509 select SYS_HAS_EARLY_PRINTK
510 select SYS_SUPPORTS_32BIT_KERNEL
511 select SYS_SUPPORTS_64BIT_KERNEL
512 select SYS_SUPPORTS_BIG_ENDIAN
513 select SYS_SUPPORTS_LITTLE_ENDIAN
514 select SYS_SUPPORTS_SMARTMIPS
515 select SYS_SUPPORTS_MICROMIPS
516 select SYS_SUPPORTS_MIPS16
517 select USB_EHCI_BIG_ENDIAN_DESC
518 select USB_EHCI_BIG_ENDIAN_MMIO
521 This enables support for the MIPS Technologies SEAD3 evaluation
525 bool "NEC EMMA2RH Mark-eins board"
529 This enables support for the NEC Electronics Mark-eins boards.
532 bool "NEC VR4100 series based machines"
535 select SYS_HAS_CPU_VR41XX
536 select SYS_SUPPORTS_MIPS16
540 bool "NXP STB220 board"
543 Support for NXP Semiconductors STB220 Development Board.
550 Support for NXP Semiconductors STB225 Development Board.
553 bool "PMC-Sierra MSP chipsets"
556 select DMA_NONCOHERENT
558 select NO_EXCEPT_FILL
560 select SYS_HAS_CPU_MIPS32_R1
561 select SYS_HAS_CPU_MIPS32_R2
562 select SYS_SUPPORTS_32BIT_KERNEL
563 select SYS_SUPPORTS_BIG_ENDIAN
564 select SYS_SUPPORTS_MIPS16
567 select SERIAL_8250_CONSOLE
568 select USB_EHCI_BIG_ENDIAN_MMIO
569 select USB_EHCI_BIG_ENDIAN_DESC
571 This adds support for the PMC-Sierra family of Multi-Service
572 Processor System-On-A-Chips. These parts include a number
573 of integrated peripherals, interfaces and DSPs in addition to
574 a variety of MIPS cores.
577 bool "Ralink based machines"
581 select DMA_NONCOHERENT
584 select SYS_HAS_CPU_MIPS32_R1
585 select SYS_HAS_CPU_MIPS32_R2
586 select SYS_SUPPORTS_32BIT_KERNEL
587 select SYS_SUPPORTS_LITTLE_ENDIAN
588 select SYS_SUPPORTS_MIPS16
589 select SYS_HAS_EARLY_PRINTK
591 select ARCH_HAS_RESET_CONTROLLER
592 select RESET_CONTROLLER
595 bool "SGI IP22 (Indy/Indigo2)"
601 select DEFAULT_SGI_PARTITION
602 select DMA_NONCOHERENT
606 select IP22_CPU_SCACHE
608 select GENERIC_ISA_DMA_SUPPORT_BROKEN
610 select SGI_HAS_INDYDOG
616 select SYS_HAS_CPU_R4X00
617 select SYS_HAS_CPU_R5000
619 # Disable EARLY_PRINTK for now since it leads to overwritten prom
620 # memory during early boot on some machines.
622 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
623 # for a more details discussion
625 # select SYS_HAS_EARLY_PRINTK
626 select SYS_SUPPORTS_32BIT_KERNEL
627 select SYS_SUPPORTS_64BIT_KERNEL
628 select SYS_SUPPORTS_BIG_ENDIAN
629 select MIPS_L1_CACHE_SHIFT_7
631 This are the SGI Indy, Challenge S and Indigo2, as well as certain
632 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
633 that runs on these, say Y here.
636 bool "SGI IP27 (Origin200/2000)"
640 select DEFAULT_SGI_PARTITION
642 select SYS_HAS_EARLY_PRINTK
644 select NR_CPUS_DEFAULT_64
645 select SYS_HAS_CPU_R10000
646 select SYS_SUPPORTS_64BIT_KERNEL
647 select SYS_SUPPORTS_BIG_ENDIAN
648 select SYS_SUPPORTS_NUMA
649 select SYS_SUPPORTS_SMP
650 select MIPS_L1_CACHE_SHIFT_7
652 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
653 workstations. To compile a Linux kernel that runs on these, say Y
657 bool "SGI IP28 (Indigo2 R10k)"
663 select DEFAULT_SGI_PARTITION
664 select DMA_NONCOHERENT
665 select GENERIC_ISA_DMA_SUPPORT_BROKEN
671 select SGI_HAS_INDYDOG
677 select SYS_HAS_CPU_R10000
679 # Disable EARLY_PRINTK for now since it leads to overwritten prom
680 # memory during early boot on some machines.
682 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
683 # for a more details discussion
685 # select SYS_HAS_EARLY_PRINTK
686 select SYS_SUPPORTS_64BIT_KERNEL
687 select SYS_SUPPORTS_BIG_ENDIAN
688 select MIPS_L1_CACHE_SHIFT_7
690 This is the SGI Indigo2 with R10000 processor. To compile a Linux
691 kernel that runs on these, say Y here.
700 select DMA_NONCOHERENT
703 select R5000_CPU_SCACHE
704 select RM7000_CPU_SCACHE
705 select SYS_HAS_CPU_R5000
706 select SYS_HAS_CPU_R10000 if BROKEN
707 select SYS_HAS_CPU_RM7000
708 select SYS_HAS_CPU_NEVADA
709 select SYS_SUPPORTS_64BIT_KERNEL
710 select SYS_SUPPORTS_BIG_ENDIAN
712 If you want this kernel to run on SGI O2 workstation, say Y here.
715 bool "Sibyte BCM91120C-CRhine"
718 select SIBYTE_BCM1120
720 select SYS_HAS_CPU_SB1
721 select SYS_SUPPORTS_BIG_ENDIAN
722 select SYS_SUPPORTS_LITTLE_ENDIAN
725 bool "Sibyte BCM91120x-Carmel"
728 select SIBYTE_BCM1120
730 select SYS_HAS_CPU_SB1
731 select SYS_SUPPORTS_BIG_ENDIAN
732 select SYS_SUPPORTS_LITTLE_ENDIAN
735 bool "Sibyte BCM91125C-CRhone"
738 select SIBYTE_BCM1125
740 select SYS_HAS_CPU_SB1
741 select SYS_SUPPORTS_BIG_ENDIAN
742 select SYS_SUPPORTS_HIGHMEM
743 select SYS_SUPPORTS_LITTLE_ENDIAN
746 bool "Sibyte BCM91125E-Rhone"
749 select SIBYTE_BCM1125H
751 select SYS_HAS_CPU_SB1
752 select SYS_SUPPORTS_BIG_ENDIAN
753 select SYS_SUPPORTS_LITTLE_ENDIAN
756 bool "Sibyte BCM91250A-SWARM"
759 select HAVE_PATA_PLATFORM
762 select SYS_HAS_CPU_SB1
763 select SYS_SUPPORTS_BIG_ENDIAN
764 select SYS_SUPPORTS_HIGHMEM
765 select SYS_SUPPORTS_LITTLE_ENDIAN
766 select ZONE_DMA32 if 64BIT
768 config SIBYTE_LITTLESUR
769 bool "Sibyte BCM91250C2-LittleSur"
772 select HAVE_PATA_PLATFORM
775 select SYS_HAS_CPU_SB1
776 select SYS_SUPPORTS_BIG_ENDIAN
777 select SYS_SUPPORTS_HIGHMEM
778 select SYS_SUPPORTS_LITTLE_ENDIAN
780 config SIBYTE_SENTOSA
781 bool "Sibyte BCM91250E-Sentosa"
786 select SYS_HAS_CPU_SB1
787 select SYS_SUPPORTS_BIG_ENDIAN
788 select SYS_SUPPORTS_LITTLE_ENDIAN
791 bool "Sibyte BCM91480B-BigSur"
794 select NR_CPUS_DEFAULT_4
795 select SIBYTE_BCM1x80
797 select SYS_HAS_CPU_SB1
798 select SYS_SUPPORTS_BIG_ENDIAN
799 select SYS_SUPPORTS_HIGHMEM
800 select SYS_SUPPORTS_LITTLE_ENDIAN
801 select ZONE_DMA32 if 64BIT
804 bool "SNI RM200/300/400"
805 select FW_ARC if CPU_LITTLE_ENDIAN
806 select FW_ARC32 if CPU_LITTLE_ENDIAN
807 select FW_SNIPROM if CPU_BIG_ENDIAN
808 select ARCH_MAY_HAVE_PC_FDC
812 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
813 select DMA_NONCOHERENT
814 select GENERIC_ISA_DMA
815 select HAVE_PCSPKR_PLATFORM
822 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
823 select SYS_HAS_CPU_R4X00
824 select SYS_HAS_CPU_R5000
825 select SYS_HAS_CPU_R10000
826 select R5000_CPU_SCACHE
827 select SYS_HAS_EARLY_PRINTK
828 select SYS_SUPPORTS_32BIT_KERNEL
829 select SYS_SUPPORTS_64BIT_KERNEL
830 select SYS_SUPPORTS_BIG_ENDIAN
831 select SYS_SUPPORTS_HIGHMEM
832 select SYS_SUPPORTS_LITTLE_ENDIAN
834 The SNI RM200/300/400 are MIPS-based machines manufactured by
835 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
836 Technology and now in turn merged with Fujitsu. Say Y here to
837 support this machine type.
840 bool "Toshiba TX39 series based machines"
843 bool "Toshiba TX49 series based machines"
845 config MIKROTIK_RB532
846 bool "Mikrotik RB532 boards"
849 select DMA_NONCOHERENT
852 select SYS_HAS_CPU_MIPS32_R1
853 select SYS_SUPPORTS_32BIT_KERNEL
854 select SYS_SUPPORTS_LITTLE_ENDIAN
858 select MIPS_L1_CACHE_SHIFT_4
860 Support the Mikrotik(tm) RouterBoard 532 series,
861 based on the IDT RC32434 SoC.
863 config CAVIUM_OCTEON_SOC
864 bool "Cavium Networks Octeon SoC based boards"
866 select ARCH_PHYS_ADDR_T_64BIT
868 select SYS_SUPPORTS_64BIT_KERNEL
869 select SYS_SUPPORTS_BIG_ENDIAN
871 select EDAC_ATOMIC_SCRUB
872 select SYS_SUPPORTS_LITTLE_ENDIAN
873 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
874 select SYS_HAS_EARLY_PRINTK
875 select SYS_HAS_CPU_CAVIUM_OCTEON
883 select ARCH_SPARSEMEM_ENABLE
884 select SYS_SUPPORTS_SMP
885 select NR_CPUS_DEFAULT_16
887 select MTD_COMPLEX_MAPPINGS
889 This option supports all of the Octeon reference boards from Cavium
890 Networks. It builds a kernel that dynamically determines the Octeon
891 CPU type and supports all known board reference implementations.
892 Some of the supported boards are:
899 Say Y here for most Octeon reference boards.
902 bool "Netlogic XLR/XLS based systems"
905 select SYS_HAS_CPU_XLR
906 select SYS_SUPPORTS_SMP
909 select SYS_SUPPORTS_32BIT_KERNEL
910 select SYS_SUPPORTS_64BIT_KERNEL
911 select ARCH_PHYS_ADDR_T_64BIT
912 select SYS_SUPPORTS_BIG_ENDIAN
913 select SYS_SUPPORTS_HIGHMEM
915 select NR_CPUS_DEFAULT_32
919 select ZONE_DMA32 if 64BIT
921 select SYS_HAS_EARLY_PRINTK
922 select SYS_SUPPORTS_ZBOOT
923 select SYS_SUPPORTS_ZBOOT_UART16550
925 Support for systems based on Netlogic XLR and XLS processors.
926 Say Y here if you have a XLR or XLS based board.
929 bool "Netlogic XLP based systems"
932 select SYS_HAS_CPU_XLP
933 select SYS_SUPPORTS_SMP
935 select SYS_SUPPORTS_32BIT_KERNEL
936 select SYS_SUPPORTS_64BIT_KERNEL
937 select ARCH_PHYS_ADDR_T_64BIT
939 select SYS_SUPPORTS_BIG_ENDIAN
940 select SYS_SUPPORTS_LITTLE_ENDIAN
941 select SYS_SUPPORTS_HIGHMEM
943 select NR_CPUS_DEFAULT_32
947 select ZONE_DMA32 if 64BIT
949 select SYS_HAS_EARLY_PRINTK
951 select SYS_SUPPORTS_ZBOOT
952 select SYS_SUPPORTS_ZBOOT_UART16550
954 This board is based on Netlogic XLP Processor.
955 Say Y here if you have a XLP based board.
958 bool "Para-Virtualized guest system"
962 select SYS_SUPPORTS_64BIT_KERNEL
963 select SYS_SUPPORTS_32BIT_KERNEL
964 select SYS_SUPPORTS_BIG_ENDIAN
965 select SYS_SUPPORTS_SMP
966 select NR_CPUS_DEFAULT_4
967 select SYS_HAS_EARLY_PRINTK
968 select SYS_HAS_CPU_MIPS32_R2
969 select SYS_HAS_CPU_MIPS64_R2
970 select SYS_HAS_CPU_CAVIUM_OCTEON
974 This option supports guest running under ????
978 source "arch/mips/alchemy/Kconfig"
979 source "arch/mips/ath25/Kconfig"
980 source "arch/mips/ath79/Kconfig"
981 source "arch/mips/bcm47xx/Kconfig"
982 source "arch/mips/bcm63xx/Kconfig"
983 source "arch/mips/bmips/Kconfig"
984 source "arch/mips/jazz/Kconfig"
985 source "arch/mips/jz4740/Kconfig"
986 source "arch/mips/lantiq/Kconfig"
987 source "arch/mips/lasat/Kconfig"
988 source "arch/mips/pic32/Kconfig"
989 source "arch/mips/pistachio/Kconfig"
990 source "arch/mips/pmcs-msp71xx/Kconfig"
991 source "arch/mips/ralink/Kconfig"
992 source "arch/mips/sgi-ip27/Kconfig"
993 source "arch/mips/sibyte/Kconfig"
994 source "arch/mips/txx9/Kconfig"
995 source "arch/mips/vr41xx/Kconfig"
996 source "arch/mips/cavium-octeon/Kconfig"
997 source "arch/mips/loongson32/Kconfig"
998 source "arch/mips/loongson64/Kconfig"
999 source "arch/mips/netlogic/Kconfig"
1000 source "arch/mips/paravirt/Kconfig"
1001 source "arch/mips/xilfpga/Kconfig"
1005 config RWSEM_GENERIC_SPINLOCK
1009 config RWSEM_XCHGADD_ALGORITHM
1012 config ARCH_HAS_ILOG2_U32
1016 config ARCH_HAS_ILOG2_U64
1020 config GENERIC_HWEIGHT
1024 config GENERIC_CALIBRATE_DELAY
1028 config SCHED_OMIT_FRAME_POINTER
1033 # Select some configuration options automatically based on user selections.
1038 config ARCH_MAY_HAVE_PC_FDC
1074 config MIPS_CLOCK_VSYSCALL
1075 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1084 config ARCH_DMA_ADDR_T_64BIT
1085 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1087 config ARCH_SUPPORTS_UPROBES
1090 config DMA_MAYBE_COHERENT
1091 select DMA_NONCOHERENT
1097 config DMA_NONCOHERENT
1099 select NEED_DMA_MAP_STATE
1101 config NEED_DMA_MAP_STATE
1104 config SYS_HAS_EARLY_PRINTK
1108 bool "Support for hot-pluggable CPUs"
1109 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
1111 Say Y here to allow turning CPUs off and on. CPUs can be
1112 controlled through /sys/devices/system/cpu.
1113 (Note: power management support will enable this option
1114 automatically on SMP systems. )
1115 Say N if you want to disable CPU hotplug.
1117 config SYS_SUPPORTS_HOTPLUG_CPU
1120 config MIPS_BONITO64
1135 config NO_IOPORT_MAP
1141 config GENERIC_ISA_DMA
1143 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1146 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1148 select GENERIC_ISA_DMA
1153 config HOLES_IN_ZONE
1157 # Endianness selection. Sufficiently obscure so many users don't know what to
1158 # answer,so we try hard to limit the available choices. Also the use of a
1159 # choice statement should be more obvious to the user.
1162 prompt "Endianness selection"
1164 Some MIPS machines can be configured for either little or big endian
1165 byte order. These modes require different kernels and a different
1166 Linux distribution. In general there is one preferred byteorder for a
1167 particular system but some systems are just as commonly used in the
1168 one or the other endianness.
1170 config CPU_BIG_ENDIAN
1172 depends on SYS_SUPPORTS_BIG_ENDIAN
1174 config CPU_LITTLE_ENDIAN
1175 bool "Little endian"
1176 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1183 config SYS_SUPPORTS_APM_EMULATION
1186 config SYS_SUPPORTS_BIG_ENDIAN
1189 config SYS_SUPPORTS_LITTLE_ENDIAN
1192 config SYS_SUPPORTS_HUGETLBFS
1194 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1197 config MIPS_HUGE_TLB_SUPPORT
1198 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1215 config PCI_GT64XXX_PCI0
1218 config NO_EXCEPT_FILL
1225 select DMA_NONCOHERENT
1227 select SWAP_IO_SPACE
1228 select SYS_HAS_CPU_R5500
1229 select SYS_SUPPORTS_32BIT_KERNEL
1230 select SYS_SUPPORTS_64BIT_KERNEL
1231 select SYS_SUPPORTS_BIG_ENDIAN
1238 select DMA_NONCOHERENT
1239 select SYS_HAS_CPU_MIPS32_R2
1240 select SYS_SUPPORTS_32BIT_KERNEL
1241 select SYS_SUPPORTS_LITTLE_ENDIAN
1242 select SYS_SUPPORTS_BIG_ENDIAN
1243 select SYS_SUPPORTS_MIPS16
1244 select CPU_MIPSR2_IRQ_VI
1253 config SWAP_IO_SPACE
1256 config SGI_HAS_INDYDOG
1268 config SGI_HAS_ZILOG
1271 config SGI_HAS_I8042
1274 config DEFAULT_SGI_PARTITION
1286 config MIPS_L1_CACHE_SHIFT_4
1289 config MIPS_L1_CACHE_SHIFT_5
1292 config MIPS_L1_CACHE_SHIFT_6
1295 config MIPS_L1_CACHE_SHIFT_7
1298 config MIPS_L1_CACHE_SHIFT
1300 default "7" if MIPS_L1_CACHE_SHIFT_7
1301 default "6" if MIPS_L1_CACHE_SHIFT_6
1302 default "5" if MIPS_L1_CACHE_SHIFT_5
1303 default "4" if MIPS_L1_CACHE_SHIFT_4
1306 config HAVE_STD_PC_SERIAL_PORT
1310 bool "ARC console support"
1311 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1315 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1320 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1329 menu "CPU selection"
1335 config CPU_LOONGSON3
1336 bool "Loongson 3 CPU"
1337 depends on SYS_HAS_CPU_LOONGSON3
1338 select CPU_SUPPORTS_64BIT_KERNEL
1339 select CPU_SUPPORTS_HIGHMEM
1340 select CPU_SUPPORTS_HUGEPAGES
1341 select WEAK_ORDERING
1342 select WEAK_REORDERING_BEYOND_LLSC
1345 The Loongson 3 processor implements the MIPS64R2 instruction
1346 set with many extensions.
1348 config CPU_LOONGSON2E
1350 depends on SYS_HAS_CPU_LOONGSON2E
1351 select CPU_LOONGSON2
1353 The Loongson 2E processor implements the MIPS III instruction set
1354 with many extensions.
1356 It has an internal FPGA northbridge, which is compatible to
1359 config CPU_LOONGSON2F
1361 depends on SYS_HAS_CPU_LOONGSON2F
1362 select CPU_LOONGSON2
1365 The Loongson 2F processor implements the MIPS III instruction set
1366 with many extensions.
1368 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1369 have a similar programming interface with FPGA northbridge used in
1372 config CPU_LOONGSON1B
1374 depends on SYS_HAS_CPU_LOONGSON1B
1375 select CPU_LOONGSON1
1377 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1378 release 2 instruction set.
1380 config CPU_MIPS32_R1
1381 bool "MIPS32 Release 1"
1382 depends on SYS_HAS_CPU_MIPS32_R1
1383 select CPU_HAS_PREFETCH
1384 select CPU_SUPPORTS_32BIT_KERNEL
1385 select CPU_SUPPORTS_HIGHMEM
1387 Choose this option to build a kernel for release 1 or later of the
1388 MIPS32 architecture. Most modern embedded systems with a 32-bit
1389 MIPS processor are based on a MIPS32 processor. If you know the
1390 specific type of processor in your system, choose those that one
1391 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1392 Release 2 of the MIPS32 architecture is available since several
1393 years so chances are you even have a MIPS32 Release 2 processor
1394 in which case you should choose CPU_MIPS32_R2 instead for better
1397 config CPU_MIPS32_R2
1398 bool "MIPS32 Release 2"
1399 depends on SYS_HAS_CPU_MIPS32_R2
1400 select CPU_HAS_PREFETCH
1401 select CPU_SUPPORTS_32BIT_KERNEL
1402 select CPU_SUPPORTS_HIGHMEM
1403 select CPU_SUPPORTS_MSA
1406 Choose this option to build a kernel for release 2 or later of the
1407 MIPS32 architecture. Most modern embedded systems with a 32-bit
1408 MIPS processor are based on a MIPS32 processor. If you know the
1409 specific type of processor in your system, choose those that one
1410 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1412 config CPU_MIPS32_R6
1413 bool "MIPS32 Release 6"
1414 depends on SYS_HAS_CPU_MIPS32_R6
1415 select CPU_HAS_PREFETCH
1416 select CPU_SUPPORTS_32BIT_KERNEL
1417 select CPU_SUPPORTS_HIGHMEM
1418 select CPU_SUPPORTS_MSA
1421 select MIPS_O32_FP64_SUPPORT
1423 Choose this option to build a kernel for release 6 or later of the
1424 MIPS32 architecture. New MIPS processors, starting with the Warrior
1425 family, are based on a MIPS32r6 processor. If you own an older
1426 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1428 config CPU_MIPS64_R1
1429 bool "MIPS64 Release 1"
1430 depends on SYS_HAS_CPU_MIPS64_R1
1431 select CPU_HAS_PREFETCH
1432 select CPU_SUPPORTS_32BIT_KERNEL
1433 select CPU_SUPPORTS_64BIT_KERNEL
1434 select CPU_SUPPORTS_HIGHMEM
1435 select CPU_SUPPORTS_HUGEPAGES
1437 Choose this option to build a kernel for release 1 or later of the
1438 MIPS64 architecture. Many modern embedded systems with a 64-bit
1439 MIPS processor are based on a MIPS64 processor. If you know the
1440 specific type of processor in your system, choose those that one
1441 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1442 Release 2 of the MIPS64 architecture is available since several
1443 years so chances are you even have a MIPS64 Release 2 processor
1444 in which case you should choose CPU_MIPS64_R2 instead for better
1447 config CPU_MIPS64_R2
1448 bool "MIPS64 Release 2"
1449 depends on SYS_HAS_CPU_MIPS64_R2
1450 select CPU_HAS_PREFETCH
1451 select CPU_SUPPORTS_32BIT_KERNEL
1452 select CPU_SUPPORTS_64BIT_KERNEL
1453 select CPU_SUPPORTS_HIGHMEM
1454 select CPU_SUPPORTS_HUGEPAGES
1455 select CPU_SUPPORTS_MSA
1457 Choose this option to build a kernel for release 2 or later of the
1458 MIPS64 architecture. Many modern embedded systems with a 64-bit
1459 MIPS processor are based on a MIPS64 processor. If you know the
1460 specific type of processor in your system, choose those that one
1461 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1463 config CPU_MIPS64_R6
1464 bool "MIPS64 Release 6"
1465 depends on SYS_HAS_CPU_MIPS64_R6
1466 select CPU_HAS_PREFETCH
1467 select CPU_SUPPORTS_32BIT_KERNEL
1468 select CPU_SUPPORTS_64BIT_KERNEL
1469 select CPU_SUPPORTS_HIGHMEM
1470 select CPU_SUPPORTS_MSA
1472 select MIPS_O32_FP64_SUPPORT if MIPS32_O32
1474 Choose this option to build a kernel for release 6 or later of the
1475 MIPS64 architecture. New MIPS processors, starting with the Warrior
1476 family, are based on a MIPS64r6 processor. If you own an older
1477 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1481 depends on SYS_HAS_CPU_R3000
1483 select CPU_SUPPORTS_32BIT_KERNEL
1484 select CPU_SUPPORTS_HIGHMEM
1486 Please make sure to pick the right CPU type. Linux/MIPS is not
1487 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1488 *not* work on R4000 machines and vice versa. However, since most
1489 of the supported machines have an R4000 (or similar) CPU, R4x00
1490 might be a safe bet. If the resulting kernel does not work,
1491 try to recompile with R3000.
1495 depends on SYS_HAS_CPU_TX39XX
1496 select CPU_SUPPORTS_32BIT_KERNEL
1500 depends on SYS_HAS_CPU_VR41XX
1501 select CPU_SUPPORTS_32BIT_KERNEL
1502 select CPU_SUPPORTS_64BIT_KERNEL
1504 The options selects support for the NEC VR4100 series of processors.
1505 Only choose this option if you have one of these processors as a
1506 kernel built with this option will not run on any other type of
1507 processor or vice versa.
1511 depends on SYS_HAS_CPU_R4300
1512 select CPU_SUPPORTS_32BIT_KERNEL
1513 select CPU_SUPPORTS_64BIT_KERNEL
1515 MIPS Technologies R4300-series processors.
1519 depends on SYS_HAS_CPU_R4X00
1520 select CPU_SUPPORTS_32BIT_KERNEL
1521 select CPU_SUPPORTS_64BIT_KERNEL
1522 select CPU_SUPPORTS_HUGEPAGES
1524 MIPS Technologies R4000-series processors other than 4300, including
1525 the R4000, R4400, R4600, and 4700.
1529 depends on SYS_HAS_CPU_TX49XX
1530 select CPU_HAS_PREFETCH
1531 select CPU_SUPPORTS_32BIT_KERNEL
1532 select CPU_SUPPORTS_64BIT_KERNEL
1533 select CPU_SUPPORTS_HUGEPAGES
1537 depends on SYS_HAS_CPU_R5000
1538 select CPU_SUPPORTS_32BIT_KERNEL
1539 select CPU_SUPPORTS_64BIT_KERNEL
1540 select CPU_SUPPORTS_HUGEPAGES
1542 MIPS Technologies R5000-series processors other than the Nevada.
1546 depends on SYS_HAS_CPU_R5432
1547 select CPU_SUPPORTS_32BIT_KERNEL
1548 select CPU_SUPPORTS_64BIT_KERNEL
1549 select CPU_SUPPORTS_HUGEPAGES
1553 depends on SYS_HAS_CPU_R5500
1554 select CPU_SUPPORTS_32BIT_KERNEL
1555 select CPU_SUPPORTS_64BIT_KERNEL
1556 select CPU_SUPPORTS_HUGEPAGES
1558 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1563 depends on SYS_HAS_CPU_R6000
1564 select CPU_SUPPORTS_32BIT_KERNEL
1566 MIPS Technologies R6000 and R6000A series processors. Note these
1567 processors are extremely rare and the support for them is incomplete.
1571 depends on SYS_HAS_CPU_NEVADA
1572 select CPU_SUPPORTS_32BIT_KERNEL
1573 select CPU_SUPPORTS_64BIT_KERNEL
1574 select CPU_SUPPORTS_HUGEPAGES
1576 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1580 depends on SYS_HAS_CPU_R8000
1581 select CPU_HAS_PREFETCH
1582 select CPU_SUPPORTS_64BIT_KERNEL
1584 MIPS Technologies R8000 processors. Note these processors are
1585 uncommon and the support for them is incomplete.
1589 depends on SYS_HAS_CPU_R10000
1590 select CPU_HAS_PREFETCH
1591 select CPU_SUPPORTS_32BIT_KERNEL
1592 select CPU_SUPPORTS_64BIT_KERNEL
1593 select CPU_SUPPORTS_HIGHMEM
1594 select CPU_SUPPORTS_HUGEPAGES
1596 MIPS Technologies R10000-series processors.
1600 depends on SYS_HAS_CPU_RM7000
1601 select CPU_HAS_PREFETCH
1602 select CPU_SUPPORTS_32BIT_KERNEL
1603 select CPU_SUPPORTS_64BIT_KERNEL
1604 select CPU_SUPPORTS_HIGHMEM
1605 select CPU_SUPPORTS_HUGEPAGES
1609 depends on SYS_HAS_CPU_SB1
1610 select CPU_SUPPORTS_32BIT_KERNEL
1611 select CPU_SUPPORTS_64BIT_KERNEL
1612 select CPU_SUPPORTS_HIGHMEM
1613 select CPU_SUPPORTS_HUGEPAGES
1614 select WEAK_ORDERING
1616 config CPU_CAVIUM_OCTEON
1617 bool "Cavium Octeon processor"
1618 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1619 select CPU_HAS_PREFETCH
1620 select CPU_SUPPORTS_64BIT_KERNEL
1621 select WEAK_ORDERING
1622 select CPU_SUPPORTS_HIGHMEM
1623 select CPU_SUPPORTS_HUGEPAGES
1624 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1625 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1626 select MIPS_L1_CACHE_SHIFT_7
1628 The Cavium Octeon processor is a highly integrated chip containing
1629 many ethernet hardware widgets for networking tasks. The processor
1630 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1631 Full details can be found at http://www.caviumnetworks.com.
1634 bool "Broadcom BMIPS"
1635 depends on SYS_HAS_CPU_BMIPS
1637 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1638 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1639 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1640 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1641 select CPU_SUPPORTS_32BIT_KERNEL
1642 select DMA_NONCOHERENT
1644 select SWAP_IO_SPACE
1645 select WEAK_ORDERING
1646 select CPU_SUPPORTS_HIGHMEM
1647 select CPU_HAS_PREFETCH
1649 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1652 bool "Netlogic XLR SoC"
1653 depends on SYS_HAS_CPU_XLR
1654 select CPU_SUPPORTS_32BIT_KERNEL
1655 select CPU_SUPPORTS_64BIT_KERNEL
1656 select CPU_SUPPORTS_HIGHMEM
1657 select CPU_SUPPORTS_HUGEPAGES
1658 select WEAK_ORDERING
1659 select WEAK_REORDERING_BEYOND_LLSC
1661 Netlogic Microsystems XLR/XLS processors.
1664 bool "Netlogic XLP SoC"
1665 depends on SYS_HAS_CPU_XLP
1666 select CPU_SUPPORTS_32BIT_KERNEL
1667 select CPU_SUPPORTS_64BIT_KERNEL
1668 select CPU_SUPPORTS_HIGHMEM
1669 select WEAK_ORDERING
1670 select WEAK_REORDERING_BEYOND_LLSC
1671 select CPU_HAS_PREFETCH
1673 select CPU_SUPPORTS_HUGEPAGES
1675 Netlogic Microsystems XLP processors.
1678 config CPU_MIPS32_3_5_FEATURES
1679 bool "MIPS32 Release 3.5 Features"
1680 depends on SYS_HAS_CPU_MIPS32_R3_5
1681 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1683 Choose this option to build a kernel for release 2 or later of the
1684 MIPS32 architecture including features from the 3.5 release such as
1685 support for Enhanced Virtual Addressing (EVA).
1687 config CPU_MIPS32_3_5_EVA
1688 bool "Enhanced Virtual Addressing (EVA)"
1689 depends on CPU_MIPS32_3_5_FEATURES
1693 Choose this option if you want to enable the Enhanced Virtual
1694 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1695 One of its primary benefits is an increase in the maximum size
1696 of lowmem (up to 3GB). If unsure, say 'N' here.
1698 config CPU_MIPS32_R5_FEATURES
1699 bool "MIPS32 Release 5 Features"
1700 depends on SYS_HAS_CPU_MIPS32_R5
1701 depends on CPU_MIPS32_R2
1703 Choose this option to build a kernel for release 2 or later of the
1704 MIPS32 architecture including features from release 5 such as
1705 support for Extended Physical Addressing (XPA).
1707 config CPU_MIPS32_R5_XPA
1708 bool "Extended Physical Addressing (XPA)"
1709 depends on CPU_MIPS32_R5_FEATURES
1711 depends on !PAGE_SIZE_4KB
1712 depends on SYS_SUPPORTS_HIGHMEM
1715 select ARCH_PHYS_ADDR_T_64BIT
1718 Choose this option if you want to enable the Extended Physical
1719 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1720 benefit is to increase physical addressing equal to or greater
1721 than 40 bits. Note that this has the side effect of turning on
1722 64-bit addressing which in turn makes the PTEs 64-bit in size.
1723 If unsure, say 'N' here.
1726 config CPU_NOP_WORKAROUNDS
1729 config CPU_JUMP_WORKAROUNDS
1732 config CPU_LOONGSON2F_WORKAROUNDS
1733 bool "Loongson 2F Workarounds"
1735 select CPU_NOP_WORKAROUNDS
1736 select CPU_JUMP_WORKAROUNDS
1738 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1739 require workarounds. Without workarounds the system may hang
1740 unexpectedly. For more information please refer to the gas
1741 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1743 Loongson 2F03 and later have fixed these issues and no workarounds
1744 are needed. The workarounds have no significant side effect on them
1745 but may decrease the performance of the system so this option should
1746 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1749 If unsure, please say Y.
1750 endif # CPU_LOONGSON2F
1752 config SYS_SUPPORTS_ZBOOT
1754 select HAVE_KERNEL_GZIP
1755 select HAVE_KERNEL_BZIP2
1756 select HAVE_KERNEL_LZ4
1757 select HAVE_KERNEL_LZMA
1758 select HAVE_KERNEL_LZO
1759 select HAVE_KERNEL_XZ
1761 config SYS_SUPPORTS_ZBOOT_UART16550
1763 select SYS_SUPPORTS_ZBOOT
1765 config SYS_SUPPORTS_ZBOOT_UART_PROM
1767 select SYS_SUPPORTS_ZBOOT
1769 config CPU_LOONGSON2
1771 select CPU_SUPPORTS_32BIT_KERNEL
1772 select CPU_SUPPORTS_64BIT_KERNEL
1773 select CPU_SUPPORTS_HIGHMEM
1774 select CPU_SUPPORTS_HUGEPAGES
1776 config CPU_LOONGSON1
1780 select CPU_HAS_PREFETCH
1781 select CPU_SUPPORTS_32BIT_KERNEL
1782 select CPU_SUPPORTS_HIGHMEM
1783 select CPU_SUPPORTS_CPUFREQ
1785 config CPU_BMIPS32_3300
1786 select SMP_UP if SMP
1789 config CPU_BMIPS4350
1791 select SYS_SUPPORTS_SMP
1792 select SYS_SUPPORTS_HOTPLUG_CPU
1794 config CPU_BMIPS4380
1796 select MIPS_L1_CACHE_SHIFT_6
1797 select SYS_SUPPORTS_SMP
1798 select SYS_SUPPORTS_HOTPLUG_CPU
1800 config CPU_BMIPS5000
1802 select MIPS_CPU_SCACHE
1803 select MIPS_L1_CACHE_SHIFT_7
1804 select SYS_SUPPORTS_SMP
1805 select SYS_SUPPORTS_HOTPLUG_CPU
1807 config SYS_HAS_CPU_LOONGSON3
1809 select CPU_SUPPORTS_CPUFREQ
1811 config SYS_HAS_CPU_LOONGSON2E
1814 config SYS_HAS_CPU_LOONGSON2F
1816 select CPU_SUPPORTS_CPUFREQ
1817 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1818 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1820 config SYS_HAS_CPU_LOONGSON1B
1823 config SYS_HAS_CPU_MIPS32_R1
1826 config SYS_HAS_CPU_MIPS32_R2
1829 config SYS_HAS_CPU_MIPS32_R3_5
1832 config SYS_HAS_CPU_MIPS32_R5
1835 config SYS_HAS_CPU_MIPS32_R6
1838 config SYS_HAS_CPU_MIPS64_R1
1841 config SYS_HAS_CPU_MIPS64_R2
1844 config SYS_HAS_CPU_MIPS64_R6
1847 config SYS_HAS_CPU_R3000
1850 config SYS_HAS_CPU_TX39XX
1853 config SYS_HAS_CPU_VR41XX
1856 config SYS_HAS_CPU_R4300
1859 config SYS_HAS_CPU_R4X00
1862 config SYS_HAS_CPU_TX49XX
1865 config SYS_HAS_CPU_R5000
1868 config SYS_HAS_CPU_R5432
1871 config SYS_HAS_CPU_R5500
1874 config SYS_HAS_CPU_R6000
1877 config SYS_HAS_CPU_NEVADA
1880 config SYS_HAS_CPU_R8000
1883 config SYS_HAS_CPU_R10000
1886 config SYS_HAS_CPU_RM7000
1889 config SYS_HAS_CPU_SB1
1892 config SYS_HAS_CPU_CAVIUM_OCTEON
1895 config SYS_HAS_CPU_BMIPS
1898 config SYS_HAS_CPU_BMIPS32_3300
1900 select SYS_HAS_CPU_BMIPS
1902 config SYS_HAS_CPU_BMIPS4350
1904 select SYS_HAS_CPU_BMIPS
1906 config SYS_HAS_CPU_BMIPS4380
1908 select SYS_HAS_CPU_BMIPS
1910 config SYS_HAS_CPU_BMIPS5000
1912 select SYS_HAS_CPU_BMIPS
1914 config SYS_HAS_CPU_XLR
1917 config SYS_HAS_CPU_XLP
1920 config MIPS_MALTA_PM
1921 depends on MIPS_MALTA
1927 # CPU may reorder R->R, R->W, W->R, W->W
1928 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1930 config WEAK_ORDERING
1934 # CPU may reorder reads and writes beyond LL/SC
1935 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1937 config WEAK_REORDERING_BEYOND_LLSC
1942 # These two indicate any level of the MIPS32 and MIPS64 architecture
1946 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1950 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1953 # These two indicate the revision of the architecture, either Release 1 or Release 2
1957 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1961 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1966 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1975 config SYS_SUPPORTS_32BIT_KERNEL
1977 config SYS_SUPPORTS_64BIT_KERNEL
1979 config CPU_SUPPORTS_32BIT_KERNEL
1981 config CPU_SUPPORTS_64BIT_KERNEL
1983 config CPU_SUPPORTS_CPUFREQ
1985 config CPU_SUPPORTS_ADDRWINCFG
1987 config CPU_SUPPORTS_HUGEPAGES
1989 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1991 config MIPS_PGD_C0_CONTEXT
1993 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1996 # Set to y for ptrace access to watch registers.
1998 config HARDWARE_WATCHPOINTS
2000 default y if CPU_MIPSR1 || CPU_MIPSR2
2005 prompt "Kernel code model"
2007 You should only select this option if you have a workload that
2008 actually benefits from 64-bit processing or if your machine has
2009 large memory. You will only be presented a single option in this
2010 menu if your system does not support both 32-bit and 64-bit kernels.
2013 bool "32-bit kernel"
2014 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2017 Select this option if you want to build a 32-bit kernel.
2020 bool "64-bit kernel"
2021 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2023 Select this option if you want to build a 64-bit kernel.
2028 bool "KVM Guest Kernel"
2029 depends on BROKEN_ON_SMP
2031 Select this option if building a guest kernel for KVM (Trap & Emulate)
2034 config KVM_GUEST_TIMER_FREQ
2035 int "Count/Compare Timer Frequency (MHz)"
2036 depends on KVM_GUEST
2039 Set this to non-zero if building a guest kernel for KVM to skip RTC
2040 emulation when determining guest CPU Frequency. Instead, the guest's
2041 timer frequency is specified directly.
2044 prompt "Kernel page size"
2045 default PAGE_SIZE_4KB
2047 config PAGE_SIZE_4KB
2049 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2051 This option select the standard 4kB Linux page size. On some
2052 R3000-family processors this is the only available page size. Using
2053 4kB page size will minimize memory consumption and is therefore
2054 recommended for low memory systems.
2056 config PAGE_SIZE_8KB
2058 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2060 Using 8kB page size will result in higher performance kernel at
2061 the price of higher memory consumption. This option is available
2062 only on R8000 and cnMIPS processors. Note that you will need a
2063 suitable Linux distribution to support this.
2065 config PAGE_SIZE_16KB
2067 depends on !CPU_R3000 && !CPU_TX39XX
2069 Using 16kB page size will result in higher performance kernel at
2070 the price of higher memory consumption. This option is available on
2071 all non-R3000 family processors. Note that you will need a suitable
2072 Linux distribution to support this.
2074 config PAGE_SIZE_32KB
2076 depends on CPU_CAVIUM_OCTEON
2078 Using 32kB page size will result in higher performance kernel at
2079 the price of higher memory consumption. This option is available
2080 only on cnMIPS cores. Note that you will need a suitable Linux
2081 distribution to support this.
2083 config PAGE_SIZE_64KB
2085 depends on !CPU_R3000 && !CPU_TX39XX && !CPU_R6000
2087 Using 64kB page size will result in higher performance kernel at
2088 the price of higher memory consumption. This option is available on
2089 all non-R3000 family processor. Not that at the time of this
2090 writing this option is still high experimental.
2094 config FORCE_MAX_ZONEORDER
2095 int "Maximum zone order"
2096 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2097 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2098 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2099 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2100 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2101 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2105 The kernel memory allocator divides physically contiguous memory
2106 blocks into "zones", where each zone is a power of two number of
2107 pages. This option selects the largest power of two that the kernel
2108 keeps in the memory allocator. If you need to allocate very large
2109 blocks of physically contiguous memory, then you may need to
2110 increase this value.
2112 This config option is actually maximum order plus one. For example,
2113 a value of 11 means that the largest free memory block is 2^10 pages.
2115 The page size is not necessarily 4KB. Keep this in mind
2116 when choosing a value for this option.
2121 config IP22_CPU_SCACHE
2126 # Support for a MIPS32 / MIPS64 style S-caches
2128 config MIPS_CPU_SCACHE
2132 config R5000_CPU_SCACHE
2136 config RM7000_CPU_SCACHE
2140 config SIBYTE_DMA_PAGEOPS
2141 bool "Use DMA to clear/copy pages"
2144 Instead of using the CPU to zero and copy pages, use a Data Mover
2145 channel. These DMA channels are otherwise unused by the standard
2146 SiByte Linux port. Seems to give a small performance benefit.
2148 config CPU_HAS_PREFETCH
2151 config CPU_GENERIC_DUMP_TLB
2153 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2157 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2159 config CPU_R4K_CACHE_TLB
2161 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2164 bool "MIPS MT SMP support (1 TC on each available VPE)"
2165 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2166 select CPU_MIPSR2_IRQ_VI
2167 select CPU_MIPSR2_IRQ_EI
2172 select SYS_SUPPORTS_SMP
2173 select SYS_SUPPORTS_SCHED_SMT
2174 select MIPS_PERF_SHARED_TC_COUNTERS
2176 This is a kernel model which is known as SMVP. This is supported
2177 on cores with the MT ASE and uses the available VPEs to implement
2178 virtual processors which supports SMP. This is equivalent to the
2179 Intel Hyperthreading feature. For further information go to
2180 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2186 bool "SMT (multithreading) scheduler support"
2187 depends on SYS_SUPPORTS_SCHED_SMT
2190 SMT scheduler support improves the CPU scheduler's decision making
2191 when dealing with MIPS MT enabled cores at a cost of slightly
2192 increased overhead in some places. If unsure say N here.
2194 config SYS_SUPPORTS_SCHED_SMT
2197 config SYS_SUPPORTS_MULTITHREADING
2200 config MIPS_MT_FPAFF
2201 bool "Dynamic FPU affinity for FP-intensive threads"
2203 depends on MIPS_MT_SMP
2205 config MIPSR2_TO_R6_EMULATOR
2206 bool "MIPS R2-to-R6 emulator"
2207 depends on CPU_MIPSR6 && !SMP
2210 Choose this option if you want to run non-R6 MIPS userland code.
2211 Even if you say 'Y' here, the emulator will still be disabled by
2212 default. You can enable it using the 'mipsr2emu' kernel option.
2213 The only reason this is a build-time option is to save ~14K from the
2215 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2216 depends on SMP && CPU_MIPSR6
2218 config MIPS_VPE_LOADER
2219 bool "VPE loader support."
2220 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2221 select CPU_MIPSR2_IRQ_VI
2222 select CPU_MIPSR2_IRQ_EI
2225 Includes a loader for loading an elf relocatable object
2226 onto another VPE and running it.
2228 config MIPS_VPE_LOADER_CMP
2231 depends on MIPS_VPE_LOADER && MIPS_CMP
2233 config MIPS_VPE_LOADER_MT
2236 depends on MIPS_VPE_LOADER && !MIPS_CMP
2238 config MIPS_VPE_LOADER_TOM
2239 bool "Load VPE program into memory hidden from linux"
2240 depends on MIPS_VPE_LOADER
2243 The loader can use memory that is present but has been hidden from
2244 Linux using the kernel command line option "mem=xxMB". It's up to
2245 you to ensure the amount you put in the option and the space your
2246 program requires is less or equal to the amount physically present.
2248 config MIPS_VPE_APSP_API
2249 bool "Enable support for AP/SP API (RTLX)"
2250 depends on MIPS_VPE_LOADER
2253 config MIPS_VPE_APSP_API_CMP
2256 depends on MIPS_VPE_APSP_API && MIPS_CMP
2258 config MIPS_VPE_APSP_API_MT
2261 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2264 bool "MIPS CMP framework support (DEPRECATED)"
2265 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2268 select SYS_SUPPORTS_SMP
2269 select WEAK_ORDERING
2272 Select this if you are using a bootloader which implements the "CMP
2273 framework" protocol (ie. YAMON) and want your kernel to make use of
2274 its ability to start secondary CPUs.
2276 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2280 bool "MIPS Coherent Processing System support"
2281 depends on SYS_SUPPORTS_MIPS_CPS && !CPU_MIPSR6
2284 select MIPS_CPS_PM if HOTPLUG_CPU
2286 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2287 select SYS_SUPPORTS_HOTPLUG_CPU
2288 select SYS_SUPPORTS_SMP
2289 select WEAK_ORDERING
2291 Select this if you wish to run an SMP kernel across multiple cores
2292 within a MIPS Coherent Processing System. When this option is
2293 enabled the kernel will probe for other cores and boot them with
2294 no external assistance. It is safe to enable this when hardware
2295 support is unavailable.
2308 config SB1_PASS_2_WORKAROUNDS
2310 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2313 config SB1_PASS_2_1_WORKAROUNDS
2315 depends on CPU_SB1 && CPU_SB1_PASS_2
2319 config ARCH_PHYS_ADDR_T_64BIT
2323 prompt "SmartMIPS or microMIPS ASE support"
2325 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2328 Select this if you want neither microMIPS nor SmartMIPS support
2330 config CPU_HAS_SMARTMIPS
2331 depends on SYS_SUPPORTS_SMARTMIPS
2334 SmartMIPS is a extension of the MIPS32 architecture aimed at
2335 increased security at both hardware and software level for
2336 smartcards. Enabling this option will allow proper use of the
2337 SmartMIPS instructions by Linux applications. However a kernel with
2338 this option will not work on a MIPS core without SmartMIPS core. If
2339 you don't know you probably don't have SmartMIPS and should say N
2342 config CPU_MICROMIPS
2343 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2346 When this option is enabled the kernel will be built using the
2352 bool "Support for the MIPS SIMD Architecture"
2353 depends on CPU_SUPPORTS_MSA
2354 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2356 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2357 and a set of SIMD instructions to operate on them. When this option
2358 is enabled the kernel will support allocating & switching MSA
2359 vector register contexts. If you know that your kernel will only be
2360 running on CPUs which do not support MSA or that your userland will
2361 not be making use of it then you may wish to say N here to reduce
2362 the size & complexity of your kernel.
2373 # Vectored interrupt mode is an R2 feature
2375 config CPU_MIPSR2_IRQ_VI
2379 # Extended interrupt mode is an R2 feature
2381 config CPU_MIPSR2_IRQ_EI
2386 depends on !CPU_R3000
2392 config CPU_DADDI_WORKAROUNDS
2395 config CPU_R4000_WORKAROUNDS
2397 select CPU_R4400_WORKAROUNDS
2399 config CPU_R4400_WORKAROUNDS
2403 # - Highmem only makes sense for the 32-bit kernel.
2404 # - The current highmem code will only work properly on physically indexed
2405 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2406 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2407 # moment we protect the user and offer the highmem option only on machines
2408 # where it's known to be safe. This will not offer highmem on a few systems
2409 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2410 # indexed CPUs but we're playing safe.
2411 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2412 # know they might have memory configurations that could make use of highmem
2416 bool "High Memory Support"
2417 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2419 config CPU_SUPPORTS_HIGHMEM
2422 config SYS_SUPPORTS_HIGHMEM
2425 config SYS_SUPPORTS_SMARTMIPS
2428 config SYS_SUPPORTS_MICROMIPS
2431 config SYS_SUPPORTS_MIPS16
2434 This option must be set if a kernel might be executed on a MIPS16-
2435 enabled CPU even if MIPS16 is not actually being used. In other
2436 words, it makes the kernel MIPS16-tolerant.
2438 config CPU_SUPPORTS_MSA
2441 config ARCH_FLATMEM_ENABLE
2443 depends on !NUMA && !CPU_LOONGSON2
2445 config ARCH_DISCONTIGMEM_ENABLE
2447 default y if SGI_IP27
2449 Say Y to support efficient handling of discontiguous physical memory,
2450 for architectures which are either NUMA (Non-Uniform Memory Access)
2451 or have huge holes in the physical address space for other reasons.
2452 See <file:Documentation/vm/numa> for more.
2454 config ARCH_SPARSEMEM_ENABLE
2456 select SPARSEMEM_STATIC
2460 depends on SYS_SUPPORTS_NUMA
2462 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2463 Access). This option improves performance on systems with more
2464 than two nodes; on two node systems it is generally better to
2465 leave it disabled; on single node systems disable this option
2468 config SYS_SUPPORTS_NUMA
2474 depends on NEED_MULTIPLE_NODES
2476 config HW_PERF_EVENTS
2477 bool "Enable hardware performance counter support for perf events"
2478 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2481 Enable hardware performance counter support for perf events. If
2482 disabled, perf events will use software events only.
2487 bool "Multi-Processing support"
2488 depends on SYS_SUPPORTS_SMP
2490 This enables support for systems with more than one CPU. If you have
2491 a system with only one CPU, say N. If you have a system with more
2492 than one CPU, say Y.
2494 If you say N here, the kernel will run on uni- and multiprocessor
2495 machines, but will use only one CPU of a multiprocessor machine. If
2496 you say Y here, the kernel will run on many, but not all,
2497 uniprocessor machines. On a uniprocessor machine, the kernel
2498 will run faster if you say N here.
2500 People using multiprocessor machines who say Y here should also say
2501 Y to "Enhanced Real Time Clock Support", below.
2503 See also the SMP-HOWTO available at
2504 <http://www.tldp.org/docs.html#howto>.
2506 If you don't know what to do here, say N.
2511 config SYS_SUPPORTS_MIPS_CMP
2514 config SYS_SUPPORTS_MIPS_CPS
2517 config SYS_SUPPORTS_SMP
2520 config NR_CPUS_DEFAULT_4
2523 config NR_CPUS_DEFAULT_8
2526 config NR_CPUS_DEFAULT_16
2529 config NR_CPUS_DEFAULT_32
2532 config NR_CPUS_DEFAULT_64
2536 int "Maximum number of CPUs (2-256)"
2539 default "4" if NR_CPUS_DEFAULT_4
2540 default "8" if NR_CPUS_DEFAULT_8
2541 default "16" if NR_CPUS_DEFAULT_16
2542 default "32" if NR_CPUS_DEFAULT_32
2543 default "64" if NR_CPUS_DEFAULT_64
2545 This allows you to specify the maximum number of CPUs which this
2546 kernel will support. The maximum supported value is 32 for 32-bit
2547 kernel and 64 for 64-bit kernels; the minimum value which makes
2548 sense is 1 for Qemu (useful only for kernel debugging purposes)
2549 and 2 for all others.
2551 This is purely to save memory - each supported CPU adds
2552 approximately eight kilobytes to the kernel image. For best
2553 performance should round up your number of processors to the next
2556 config MIPS_PERF_SHARED_TC_COUNTERS
2560 # Timer Interrupt Frequency Configuration
2564 prompt "Timer frequency"
2567 Allows the configuration of the timer frequency.
2570 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2573 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2576 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2579 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2582 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2585 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2588 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2591 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2595 config SYS_SUPPORTS_24HZ
2598 config SYS_SUPPORTS_48HZ
2601 config SYS_SUPPORTS_100HZ
2604 config SYS_SUPPORTS_128HZ
2607 config SYS_SUPPORTS_250HZ
2610 config SYS_SUPPORTS_256HZ
2613 config SYS_SUPPORTS_1000HZ
2616 config SYS_SUPPORTS_1024HZ
2619 config SYS_SUPPORTS_ARBIT_HZ
2621 default y if !SYS_SUPPORTS_24HZ && \
2622 !SYS_SUPPORTS_48HZ && \
2623 !SYS_SUPPORTS_100HZ && \
2624 !SYS_SUPPORTS_128HZ && \
2625 !SYS_SUPPORTS_250HZ && \
2626 !SYS_SUPPORTS_256HZ && \
2627 !SYS_SUPPORTS_1000HZ && \
2628 !SYS_SUPPORTS_1024HZ
2634 default 100 if HZ_100
2635 default 128 if HZ_128
2636 default 250 if HZ_250
2637 default 256 if HZ_256
2638 default 1000 if HZ_1000
2639 default 1024 if HZ_1024
2642 def_bool HIGH_RES_TIMERS
2644 source "kernel/Kconfig.preempt"
2647 bool "Kexec system call"
2650 kexec is a system call that implements the ability to shutdown your
2651 current kernel, and to start another kernel. It is like a reboot
2652 but it is independent of the system firmware. And like a reboot
2653 you can start any kernel with it, not just Linux.
2655 The name comes from the similarity to the exec system call.
2657 It is an ongoing process to be certain the hardware in a machine
2658 is properly shutdown, so do not be surprised if this code does not
2659 initially work for you. As of this writing the exact hardware
2660 interface is strongly in flux, so no good recommendation can be
2664 bool "Kernel crash dumps"
2666 Generate crash dump after being started by kexec.
2667 This should be normally only set in special crash dump kernels
2668 which are loaded in the main kernel with kexec-tools into
2669 a specially reserved region and then later executed after
2670 a crash by kdump/kexec. The crash dump kernel must be compiled
2671 to a memory address not used by the main kernel or firmware using
2674 config PHYSICAL_START
2675 hex "Physical address where the kernel is loaded"
2676 default "0xffffffff84000000" if 64BIT
2677 default "0x84000000" if 32BIT
2678 depends on CRASH_DUMP
2680 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2681 If you plan to use kernel for capturing the crash dump change
2682 this value to start of the reserved region (the "X" value as
2683 specified in the "crashkernel=YM@XM" command line boot parameter
2684 passed to the panic-ed kernel).
2687 bool "Enable seccomp to safely compute untrusted bytecode"
2691 This kernel feature is useful for number crunching applications
2692 that may need to compute untrusted bytecode during their
2693 execution. By using pipes or other transports made available to
2694 the process as file descriptors supporting the read/write
2695 syscalls, it's possible to isolate those applications in
2696 their own address space using seccomp. Once seccomp is
2697 enabled via /proc/<pid>/seccomp, it cannot be disabled
2698 and the task is only allowed to execute a few safe syscalls
2699 defined by each seccomp mode.
2701 If unsure, say Y. Only embedded should say N here.
2703 config MIPS_O32_FP64_SUPPORT
2704 bool "Support for O32 binaries using 64-bit FP"
2705 depends on 32BIT || MIPS32_O32
2707 When this is enabled, the kernel will support use of 64-bit floating
2708 point registers with binaries using the O32 ABI along with the
2709 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2710 32-bit MIPS systems this support is at the cost of increasing the
2711 size and complexity of the compiled FPU emulator. Thus if you are
2712 running a MIPS32 system and know that none of your userland binaries
2713 will require 64-bit floating point, you may wish to reduce the size
2714 of your kernel & potentially improve FP emulation performance by
2717 Although binutils currently supports use of this flag the details
2718 concerning its effect upon the O32 ABI in userland are still being
2719 worked on. In order to avoid userland becoming dependant upon current
2720 behaviour before the details have been finalised, this option should
2721 be considered experimental and only enabled by those working upon
2729 select OF_EARLY_FLATTREE
2736 prompt "Kernel appended dtb support" if USE_OF
2737 default MIPS_NO_APPENDED_DTB
2739 config MIPS_NO_APPENDED_DTB
2742 Do not enable appended dtb support.
2744 config MIPS_ELF_APPENDED_DTB
2747 With this option, the boot code will look for a device tree binary
2748 DTB) included in the vmlinux ELF section .appended_dtb. By default
2749 it is empty and the DTB can be appended using binutils command
2752 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2754 This is meant as a backward compatiblity convenience for those
2755 systems with a bootloader that can't be upgraded to accommodate
2756 the documented boot protocol using a device tree.
2758 config MIPS_RAW_APPENDED_DTB
2761 With this option, the boot code will look for a device tree binary
2762 DTB) appended to raw vmlinux.bin (without decompressor).
2763 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2765 This is meant as a backward compatibility convenience for those
2766 systems with a bootloader that can't be upgraded to accommodate
2767 the documented boot protocol using a device tree.
2769 Beware that there is very little in terms of protection against
2770 this option being confused by leftover garbage in memory that might
2771 look like a DTB header after a reboot if no actual DTB is appended
2772 to vmlinux.bin. Do not leave this option active in a production kernel
2773 if you don't intend to always append a DTB.
2775 config MIPS_ZBOOT_APPENDED_DTB
2777 depends on SYS_SUPPORTS_ZBOOT
2779 With this option, the boot code will look for a device tree binary
2780 DTB) appended to raw vmlinuz.bin (with decompressor).
2781 (e.g. cat vmlinuz.bin <filename>.dtb > vmlinuz_w_dtb).
2783 This is meant as a backward compatibility convenience for those
2784 systems with a bootloader that can't be upgraded to accommodate
2785 the documented boot protocol using a device tree.
2787 Beware that there is very little in terms of protection against
2788 this option being confused by leftover garbage in memory that might
2789 look like a DTB header after a reboot if no actual DTB is appended
2790 to vmlinuz.bin. Do not leave this option active in a production kernel
2791 if you don't intend to always append a DTB.
2795 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2796 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2797 !MIPS_MALTA && !MIPS_SEAD3 && \
2799 default MIPS_CMDLINE_FROM_BOOTLOADER
2801 config MIPS_CMDLINE_FROM_DTB
2803 bool "Dtb kernel arguments if available"
2805 config MIPS_CMDLINE_DTB_EXTEND
2807 bool "Extend dtb kernel arguments with bootloader arguments"
2809 config MIPS_CMDLINE_FROM_BOOTLOADER
2810 bool "Bootloader kernel arguments if available"
2815 config LOCKDEP_SUPPORT
2819 config STACKTRACE_SUPPORT
2823 config HAVE_LATENCYTOP_SUPPORT
2827 config PGTABLE_LEVELS
2829 default 3 if 64BIT && !PAGE_SIZE_64KB
2832 source "init/Kconfig"
2834 source "kernel/Kconfig.freezer"
2836 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2844 bool "Support for PCI controller"
2845 depends on HW_HAS_PCI
2847 select NO_GENERIC_PCI_IOPORT_MAP
2849 Find out whether you have a PCI motherboard. PCI is the name of a
2850 bus system, i.e. the way the CPU talks to the other stuff inside
2851 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2855 bool "Support for HT-linked PCI"
2857 depends on CPU_LOONGSON3
2861 Loongson family machines use Hyper-Transport bus for inter-core
2862 connection and device connection. The PCI bus is a subordinate
2863 linked at HT. Choose Y for Loongson-3 based machines.
2868 source "drivers/pci/Kconfig"
2871 # ISA support is now enabled via select. Too many systems still have the one
2872 # or other ISA chip on the board that users don't know about so don't expect
2873 # users to choose the right thing ...
2880 depends on HW_HAS_EISA
2882 select GENERIC_ISA_DMA
2884 The Extended Industry Standard Architecture (EISA) bus was
2885 developed as an open alternative to the IBM MicroChannel bus.
2887 The EISA bus provided some of the features of the IBM MicroChannel
2888 bus while maintaining backward compatibility with cards made for
2889 the older ISA bus. The EISA bus saw limited use between 1988 and
2890 1995 when it was made obsolete by the PCI bus.
2892 Say Y here if you are building a kernel for an EISA-based machine.
2896 source "drivers/eisa/Kconfig"
2899 bool "TURBOchannel support"
2900 depends on MACH_DECSTATION
2902 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2903 processors. TURBOchannel programming specifications are available
2905 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2907 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2908 Linux driver support status is documented at:
2909 <http://www.linux-mips.org/wiki/DECstation>
2919 select MIPS_EXTERNAL_TIMER
2927 source "drivers/pcmcia/Kconfig"
2930 tristate "RapidIO support"
2934 If you say Y here, the kernel will include drivers and
2935 infrastructure code to support RapidIO interconnect devices.
2937 source "drivers/rapidio/Kconfig"
2941 menu "Executable file formats"
2943 source "fs/Kconfig.binfmt"
2948 config MIPS32_COMPAT
2954 config SYSVIPC_COMPAT
2958 bool "Kernel support for o32 binaries"
2960 select ARCH_WANT_OLD_COMPAT_IPC
2962 select MIPS32_COMPAT
2963 select SYSVIPC_COMPAT if SYSVIPC
2965 Select this option if you want to run o32 binaries. These are pure
2966 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2967 existing binaries are in this format.
2972 bool "Kernel support for n32 binaries"
2975 select MIPS32_COMPAT
2976 select SYSVIPC_COMPAT if SYSVIPC
2978 Select this option if you want to run n32 binaries. These are
2979 64-bit binaries using 32-bit quantities for addressing and certain
2980 data that would normally be 64-bit. They are used in special
2987 default y if MIPS32_O32 || MIPS32_N32
2991 menu "Power management options"
2993 config ARCH_HIBERNATION_POSSIBLE
2995 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2997 config ARCH_SUSPEND_POSSIBLE
2999 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3001 source "kernel/power/Kconfig"
3005 config MIPS_EXTERNAL_TIMER
3008 menu "CPU Power Management"
3010 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3011 source "drivers/cpufreq/Kconfig"
3014 source "drivers/cpuidle/Kconfig"
3018 source "net/Kconfig"
3020 source "drivers/Kconfig"
3022 source "drivers/firmware/Kconfig"
3026 source "arch/mips/Kconfig.debug"
3028 source "security/Kconfig"
3030 source "crypto/Kconfig"
3032 source "lib/Kconfig"
3034 source "arch/mips/kvm/Kconfig"