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
65 select HANDLE_DOMAIN_IRQ
67 menu "Machine selection"
74 bool "Alchemy processor based machines"
75 select ARCH_PHYS_ADDR_T_64BIT
79 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
80 select SYS_HAS_CPU_MIPS32_R1
81 select SYS_SUPPORTS_32BIT_KERNEL
82 select SYS_SUPPORTS_APM_EMULATION
84 select SYS_SUPPORTS_ZBOOT
88 bool "Texas Instruments AR7"
90 select DMA_NONCOHERENT
96 select SYS_HAS_CPU_MIPS32_R1
97 select SYS_HAS_EARLY_PRINTK
98 select SYS_SUPPORTS_32BIT_KERNEL
99 select SYS_SUPPORTS_LITTLE_ENDIAN
100 select SYS_SUPPORTS_MIPS16
101 select SYS_SUPPORTS_ZBOOT_UART16550
106 Support for the Texas Instruments AR7 System-on-a-Chip
107 family: TNETD7100, 7200 and 7300.
110 bool "Atheros AR231x/AR531x SoC support"
113 select DMA_NONCOHERENT
116 select SYS_HAS_CPU_MIPS32_R1
117 select SYS_SUPPORTS_BIG_ENDIAN
118 select SYS_SUPPORTS_32BIT_KERNEL
119 select SYS_HAS_EARLY_PRINTK
121 Support for Atheros AR231x and Atheros AR531x based boards
124 bool "Atheros AR71XX/AR724X/AR913X based boards"
125 select ARCH_HAS_RESET_CONTROLLER
129 select DMA_NONCOHERENT
136 select SYS_HAS_CPU_MIPS32_R2
137 select SYS_HAS_EARLY_PRINTK
138 select SYS_SUPPORTS_32BIT_KERNEL
139 select SYS_SUPPORTS_BIG_ENDIAN
140 select SYS_SUPPORTS_MIPS16
141 select SYS_SUPPORTS_ZBOOT_UART_PROM
144 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
147 bool "Broadcom Generic BMIPS kernel"
149 select NO_EXCEPT_FILL
155 select BCM6345_L1_IRQ
156 select BCM7038_L1_IRQ
157 select BCM7120_L2_IRQ
158 select BRCMSTB_L2_IRQ
160 select DMA_NONCOHERENT
161 select SYS_SUPPORTS_32BIT_KERNEL
162 select SYS_SUPPORTS_LITTLE_ENDIAN
163 select SYS_SUPPORTS_BIG_ENDIAN
164 select SYS_SUPPORTS_HIGHMEM
165 select SYS_HAS_CPU_BMIPS32_3300
166 select SYS_HAS_CPU_BMIPS4350
167 select SYS_HAS_CPU_BMIPS4380
168 select SYS_HAS_CPU_BMIPS5000
170 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
171 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
172 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
173 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
175 Build a generic DT-based kernel image that boots on select
176 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
177 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
178 must be set appropriately for your board.
181 bool "Broadcom BCM47XX based boards"
185 select DMA_NONCOHERENT
188 select SYS_HAS_CPU_MIPS32_R1
189 select NO_EXCEPT_FILL
190 select SYS_SUPPORTS_32BIT_KERNEL
191 select SYS_SUPPORTS_LITTLE_ENDIAN
192 select SYS_SUPPORTS_MIPS16
193 select SYS_HAS_EARLY_PRINTK
194 select USE_GENERIC_EARLY_PRINTK_8250
196 select LEDS_GPIO_REGISTER
200 Support for BCM47XX based boards
203 bool "Broadcom BCM63XX based boards"
208 select DMA_NONCOHERENT
210 select SYS_SUPPORTS_32BIT_KERNEL
211 select SYS_SUPPORTS_BIG_ENDIAN
212 select SYS_HAS_EARLY_PRINTK
216 select MIPS_L1_CACHE_SHIFT_4
218 Support for BCM63XX based boards
225 select DMA_NONCOHERENT
231 select PCI_GT64XXX_PCI0
233 select SYS_HAS_CPU_NEVADA
234 select SYS_HAS_EARLY_PRINTK
235 select SYS_SUPPORTS_32BIT_KERNEL
236 select SYS_SUPPORTS_64BIT_KERNEL
237 select SYS_SUPPORTS_LITTLE_ENDIAN
238 select USE_GENERIC_EARLY_PRINTK_8250
240 config MACH_DECSTATION
244 select CEVT_R4K if CPU_R4X00
246 select CSRC_R4K if CPU_R4X00
247 select CPU_DADDI_WORKAROUNDS if 64BIT
248 select CPU_R4000_WORKAROUNDS if 64BIT
249 select CPU_R4400_WORKAROUNDS if 64BIT
250 select DMA_NONCOHERENT
253 select SYS_HAS_CPU_R3000
254 select SYS_HAS_CPU_R4X00
255 select SYS_SUPPORTS_32BIT_KERNEL
256 select SYS_SUPPORTS_64BIT_KERNEL
257 select SYS_SUPPORTS_LITTLE_ENDIAN
258 select SYS_SUPPORTS_128HZ
259 select SYS_SUPPORTS_256HZ
260 select SYS_SUPPORTS_1024HZ
261 select MIPS_L1_CACHE_SHIFT_4
263 This enables support for DEC's MIPS based workstations. For details
264 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
265 DECstation porting pages on <http://decstation.unix-ag.org/>.
267 If you have one of the following DECstation Models you definitely
268 want to choose R4xx0 for the CPU Type:
275 otherwise choose R3000.
278 bool "Jazz family of machines"
281 select ARCH_MAY_HAVE_PC_FDC
284 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
285 select GENERIC_ISA_DMA
286 select HAVE_PCSPKR_PLATFORM
291 select SYS_HAS_CPU_R4X00
292 select SYS_SUPPORTS_32BIT_KERNEL
293 select SYS_SUPPORTS_64BIT_KERNEL
294 select SYS_SUPPORTS_100HZ
296 This a family of machines based on the MIPS R4030 chipset which was
297 used by several vendors to build RISC/os and Windows NT workstations.
298 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
299 Olivetti M700-10 workstations.
302 bool "Ingenic SoC based machines"
303 select SYS_SUPPORTS_32BIT_KERNEL
304 select SYS_SUPPORTS_LITTLE_ENDIAN
305 select SYS_SUPPORTS_ZBOOT_UART16550
306 select DMA_NONCOHERENT
310 select GENERIC_IRQ_CHIP
316 bool "Lantiq based platforms"
317 select DMA_NONCOHERENT
321 select SYS_HAS_CPU_MIPS32_R1
322 select SYS_HAS_CPU_MIPS32_R2
323 select SYS_SUPPORTS_BIG_ENDIAN
324 select SYS_SUPPORTS_32BIT_KERNEL
325 select SYS_SUPPORTS_MIPS16
326 select SYS_SUPPORTS_MULTITHREADING
327 select SYS_HAS_EARLY_PRINTK
334 select PINCTRL_LANTIQ
335 select ARCH_HAS_RESET_CONTROLLER
336 select RESET_CONTROLLER
339 bool "LASAT Networks platforms"
343 select DMA_NONCOHERENT
344 select SYS_HAS_EARLY_PRINTK
347 select PCI_GT64XXX_PCI0
349 select R5000_CPU_SCACHE
350 select SYS_HAS_CPU_R5000
351 select SYS_SUPPORTS_32BIT_KERNEL
352 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
353 select SYS_SUPPORTS_LITTLE_ENDIAN
355 config MACH_LOONGSON32
356 bool "Loongson-1 family of machines"
357 select SYS_SUPPORTS_ZBOOT
359 This enables support for the Loongson-1 family of machines.
361 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
362 the Institute of Computing Technology (ICT), Chinese Academy of
365 config MACH_LOONGSON64
366 bool "Loongson-2/3 family of machines"
367 select SYS_SUPPORTS_ZBOOT
369 This enables the support of Loongson-2/3 family of machines.
371 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
372 family of multi-core CPUs. They are both 64-bit general-purpose
373 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
374 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
375 in the People's Republic of China. The chief architect is Professor
378 config MACH_PISTACHIO
379 bool "IMG Pistachio SoC based boards"
383 select CLKSRC_MIPS_GIC
386 select DMA_MAYBE_COHERENT
391 select MIPS_CPU_SCACHE
395 select SYS_HAS_CPU_MIPS32_R2
396 select SYS_SUPPORTS_32BIT_KERNEL
397 select SYS_SUPPORTS_LITTLE_ENDIAN
398 select SYS_SUPPORTS_MIPS_CPS
399 select SYS_SUPPORTS_MULTITHREADING
400 select SYS_SUPPORTS_ZBOOT
401 select SYS_HAS_EARLY_PRINTK
402 select USE_GENERIC_EARLY_PRINTK_8250
405 This enables support for the IMG Pistachio SoC platform.
408 bool "MIPSfpga Xilinx based boards"
418 select MIPS_CPU_SCACHE
419 select SYS_HAS_EARLY_PRINTK
420 select SYS_HAS_CPU_MIPS32_R2
421 select SYS_SUPPORTS_32BIT_KERNEL
422 select SYS_SUPPORTS_LITTLE_ENDIAN
423 select SYS_SUPPORTS_ZBOOT_UART16550
425 select USE_GENERIC_EARLY_PRINTK_8250
427 This enables support for the IMG University Program MIPSfpga platform.
430 bool "MIPS Malta board"
431 select ARCH_MAY_HAVE_PC_FDC
437 select CLKSRC_MIPS_GIC
439 select DMA_MAYBE_COHERENT
440 select GENERIC_ISA_DMA
441 select HAVE_PCSPKR_PLATFORM
448 select MIPS_CPU_SCACHE
449 select MIPS_L1_CACHE_SHIFT_6
450 select PCI_GT64XXX_PCI0
454 select SYS_HAS_CPU_MIPS32_R1
455 select SYS_HAS_CPU_MIPS32_R2
456 select SYS_HAS_CPU_MIPS32_R3_5
457 select SYS_HAS_CPU_MIPS32_R5
458 select SYS_HAS_CPU_MIPS32_R6
459 select SYS_HAS_CPU_MIPS64_R1
460 select SYS_HAS_CPU_MIPS64_R2
461 select SYS_HAS_CPU_MIPS64_R6
462 select SYS_HAS_CPU_NEVADA
463 select SYS_HAS_CPU_RM7000
464 select SYS_SUPPORTS_32BIT_KERNEL
465 select SYS_SUPPORTS_64BIT_KERNEL
466 select SYS_SUPPORTS_BIG_ENDIAN
467 select SYS_SUPPORTS_HIGHMEM
468 select SYS_SUPPORTS_LITTLE_ENDIAN
469 select SYS_SUPPORTS_MICROMIPS
470 select SYS_SUPPORTS_MIPS_CMP
471 select SYS_SUPPORTS_MIPS_CPS
472 select SYS_SUPPORTS_MIPS16
473 select SYS_SUPPORTS_MULTITHREADING
474 select SYS_SUPPORTS_SMARTMIPS
475 select SYS_SUPPORTS_ZBOOT
476 select SYS_SUPPORTS_RELOCATABLE
478 select ZONE_DMA32 if 64BIT
482 This enables support for the MIPS Technologies Malta evaluation
486 bool "Microchip PIC32 Family"
488 This enables support for the Microchip PIC32 family of platforms.
490 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
494 bool "MIPS SEAD3 board"
500 select CLKSRC_MIPS_GIC
502 select CPU_MIPSR2_IRQ_VI
503 select CPU_MIPSR2_IRQ_EI
504 select DMA_NONCOHERENT
509 select SYS_HAS_CPU_MIPS32_R1
510 select SYS_HAS_CPU_MIPS32_R2
511 select SYS_HAS_CPU_MIPS32_R6
512 select SYS_HAS_CPU_MIPS64_R1
513 select SYS_HAS_EARLY_PRINTK
514 select SYS_SUPPORTS_32BIT_KERNEL
515 select SYS_SUPPORTS_64BIT_KERNEL
516 select SYS_SUPPORTS_BIG_ENDIAN
517 select SYS_SUPPORTS_LITTLE_ENDIAN
518 select SYS_SUPPORTS_SMARTMIPS
519 select SYS_SUPPORTS_MICROMIPS
520 select SYS_SUPPORTS_MIPS16
521 select SYS_SUPPORTS_RELOCATABLE
522 select USB_EHCI_BIG_ENDIAN_DESC
523 select USB_EHCI_BIG_ENDIAN_MMIO
526 This enables support for the MIPS Technologies SEAD3 evaluation
530 bool "NEC EMMA2RH Mark-eins board"
534 This enables support for the NEC Electronics Mark-eins boards.
537 bool "NEC VR4100 series based machines"
540 select SYS_HAS_CPU_VR41XX
541 select SYS_SUPPORTS_MIPS16
545 bool "NXP STB220 board"
548 Support for NXP Semiconductors STB220 Development Board.
555 Support for NXP Semiconductors STB225 Development Board.
558 bool "PMC-Sierra MSP chipsets"
561 select DMA_NONCOHERENT
563 select NO_EXCEPT_FILL
565 select SYS_HAS_CPU_MIPS32_R1
566 select SYS_HAS_CPU_MIPS32_R2
567 select SYS_SUPPORTS_32BIT_KERNEL
568 select SYS_SUPPORTS_BIG_ENDIAN
569 select SYS_SUPPORTS_MIPS16
572 select SERIAL_8250_CONSOLE
573 select USB_EHCI_BIG_ENDIAN_MMIO
574 select USB_EHCI_BIG_ENDIAN_DESC
576 This adds support for the PMC-Sierra family of Multi-Service
577 Processor System-On-A-Chips. These parts include a number
578 of integrated peripherals, interfaces and DSPs in addition to
579 a variety of MIPS cores.
582 bool "Ralink based machines"
586 select DMA_NONCOHERENT
589 select SYS_HAS_CPU_MIPS32_R1
590 select SYS_HAS_CPU_MIPS32_R2
591 select SYS_SUPPORTS_32BIT_KERNEL
592 select SYS_SUPPORTS_LITTLE_ENDIAN
593 select SYS_SUPPORTS_MIPS16
594 select SYS_HAS_EARLY_PRINTK
596 select ARCH_HAS_RESET_CONTROLLER
597 select RESET_CONTROLLER
600 bool "SGI IP22 (Indy/Indigo2)"
606 select DEFAULT_SGI_PARTITION
607 select DMA_NONCOHERENT
611 select IP22_CPU_SCACHE
613 select GENERIC_ISA_DMA_SUPPORT_BROKEN
615 select SGI_HAS_INDYDOG
621 select SYS_HAS_CPU_R4X00
622 select SYS_HAS_CPU_R5000
624 # Disable EARLY_PRINTK for now since it leads to overwritten prom
625 # memory during early boot on some machines.
627 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
628 # for a more details discussion
630 # select SYS_HAS_EARLY_PRINTK
631 select SYS_SUPPORTS_32BIT_KERNEL
632 select SYS_SUPPORTS_64BIT_KERNEL
633 select SYS_SUPPORTS_BIG_ENDIAN
634 select MIPS_L1_CACHE_SHIFT_7
636 This are the SGI Indy, Challenge S and Indigo2, as well as certain
637 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
638 that runs on these, say Y here.
641 bool "SGI IP27 (Origin200/2000)"
645 select DEFAULT_SGI_PARTITION
647 select SYS_HAS_EARLY_PRINTK
649 select NR_CPUS_DEFAULT_64
650 select SYS_HAS_CPU_R10000
651 select SYS_SUPPORTS_64BIT_KERNEL
652 select SYS_SUPPORTS_BIG_ENDIAN
653 select SYS_SUPPORTS_NUMA
654 select SYS_SUPPORTS_SMP
655 select MIPS_L1_CACHE_SHIFT_7
657 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
658 workstations. To compile a Linux kernel that runs on these, say Y
662 bool "SGI IP28 (Indigo2 R10k)"
668 select DEFAULT_SGI_PARTITION
669 select DMA_NONCOHERENT
670 select GENERIC_ISA_DMA_SUPPORT_BROKEN
676 select SGI_HAS_INDYDOG
682 select SYS_HAS_CPU_R10000
684 # Disable EARLY_PRINTK for now since it leads to overwritten prom
685 # memory during early boot on some machines.
687 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
688 # for a more details discussion
690 # select SYS_HAS_EARLY_PRINTK
691 select SYS_SUPPORTS_64BIT_KERNEL
692 select SYS_SUPPORTS_BIG_ENDIAN
693 select MIPS_L1_CACHE_SHIFT_7
695 This is the SGI Indigo2 with R10000 processor. To compile a Linux
696 kernel that runs on these, say Y here.
705 select DMA_NONCOHERENT
708 select R5000_CPU_SCACHE
709 select RM7000_CPU_SCACHE
710 select SYS_HAS_CPU_R5000
711 select SYS_HAS_CPU_R10000 if BROKEN
712 select SYS_HAS_CPU_RM7000
713 select SYS_HAS_CPU_NEVADA
714 select SYS_SUPPORTS_64BIT_KERNEL
715 select SYS_SUPPORTS_BIG_ENDIAN
717 If you want this kernel to run on SGI O2 workstation, say Y here.
720 bool "Sibyte BCM91120C-CRhine"
723 select SIBYTE_BCM1120
725 select SYS_HAS_CPU_SB1
726 select SYS_SUPPORTS_BIG_ENDIAN
727 select SYS_SUPPORTS_LITTLE_ENDIAN
730 bool "Sibyte BCM91120x-Carmel"
733 select SIBYTE_BCM1120
735 select SYS_HAS_CPU_SB1
736 select SYS_SUPPORTS_BIG_ENDIAN
737 select SYS_SUPPORTS_LITTLE_ENDIAN
740 bool "Sibyte BCM91125C-CRhone"
743 select SIBYTE_BCM1125
745 select SYS_HAS_CPU_SB1
746 select SYS_SUPPORTS_BIG_ENDIAN
747 select SYS_SUPPORTS_HIGHMEM
748 select SYS_SUPPORTS_LITTLE_ENDIAN
751 bool "Sibyte BCM91125E-Rhone"
754 select SIBYTE_BCM1125H
756 select SYS_HAS_CPU_SB1
757 select SYS_SUPPORTS_BIG_ENDIAN
758 select SYS_SUPPORTS_LITTLE_ENDIAN
761 bool "Sibyte BCM91250A-SWARM"
764 select HAVE_PATA_PLATFORM
767 select SYS_HAS_CPU_SB1
768 select SYS_SUPPORTS_BIG_ENDIAN
769 select SYS_SUPPORTS_HIGHMEM
770 select SYS_SUPPORTS_LITTLE_ENDIAN
771 select ZONE_DMA32 if 64BIT
773 config SIBYTE_LITTLESUR
774 bool "Sibyte BCM91250C2-LittleSur"
777 select HAVE_PATA_PLATFORM
780 select SYS_HAS_CPU_SB1
781 select SYS_SUPPORTS_BIG_ENDIAN
782 select SYS_SUPPORTS_HIGHMEM
783 select SYS_SUPPORTS_LITTLE_ENDIAN
785 config SIBYTE_SENTOSA
786 bool "Sibyte BCM91250E-Sentosa"
791 select SYS_HAS_CPU_SB1
792 select SYS_SUPPORTS_BIG_ENDIAN
793 select SYS_SUPPORTS_LITTLE_ENDIAN
796 bool "Sibyte BCM91480B-BigSur"
799 select NR_CPUS_DEFAULT_4
800 select SIBYTE_BCM1x80
802 select SYS_HAS_CPU_SB1
803 select SYS_SUPPORTS_BIG_ENDIAN
804 select SYS_SUPPORTS_HIGHMEM
805 select SYS_SUPPORTS_LITTLE_ENDIAN
806 select ZONE_DMA32 if 64BIT
809 bool "SNI RM200/300/400"
810 select FW_ARC if CPU_LITTLE_ENDIAN
811 select FW_ARC32 if CPU_LITTLE_ENDIAN
812 select FW_SNIPROM if CPU_BIG_ENDIAN
813 select ARCH_MAY_HAVE_PC_FDC
817 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
818 select DMA_NONCOHERENT
819 select GENERIC_ISA_DMA
820 select HAVE_PCSPKR_PLATFORM
827 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
828 select SYS_HAS_CPU_R4X00
829 select SYS_HAS_CPU_R5000
830 select SYS_HAS_CPU_R10000
831 select R5000_CPU_SCACHE
832 select SYS_HAS_EARLY_PRINTK
833 select SYS_SUPPORTS_32BIT_KERNEL
834 select SYS_SUPPORTS_64BIT_KERNEL
835 select SYS_SUPPORTS_BIG_ENDIAN
836 select SYS_SUPPORTS_HIGHMEM
837 select SYS_SUPPORTS_LITTLE_ENDIAN
839 The SNI RM200/300/400 are MIPS-based machines manufactured by
840 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
841 Technology and now in turn merged with Fujitsu. Say Y here to
842 support this machine type.
845 bool "Toshiba TX39 series based machines"
848 bool "Toshiba TX49 series based machines"
850 config MIKROTIK_RB532
851 bool "Mikrotik RB532 boards"
854 select DMA_NONCOHERENT
857 select SYS_HAS_CPU_MIPS32_R1
858 select SYS_SUPPORTS_32BIT_KERNEL
859 select SYS_SUPPORTS_LITTLE_ENDIAN
863 select MIPS_L1_CACHE_SHIFT_4
865 Support the Mikrotik(tm) RouterBoard 532 series,
866 based on the IDT RC32434 SoC.
868 config CAVIUM_OCTEON_SOC
869 bool "Cavium Networks Octeon SoC based boards"
871 select ARCH_PHYS_ADDR_T_64BIT
873 select SYS_SUPPORTS_64BIT_KERNEL
874 select SYS_SUPPORTS_BIG_ENDIAN
876 select EDAC_ATOMIC_SCRUB
877 select SYS_SUPPORTS_LITTLE_ENDIAN
878 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
879 select SYS_HAS_EARLY_PRINTK
880 select SYS_HAS_CPU_CAVIUM_OCTEON
888 select ARCH_SPARSEMEM_ENABLE
889 select SYS_SUPPORTS_SMP
890 select NR_CPUS_DEFAULT_16
892 select MTD_COMPLEX_MAPPINGS
894 This option supports all of the Octeon reference boards from Cavium
895 Networks. It builds a kernel that dynamically determines the Octeon
896 CPU type and supports all known board reference implementations.
897 Some of the supported boards are:
904 Say Y here for most Octeon reference boards.
907 bool "Netlogic XLR/XLS based systems"
910 select SYS_HAS_CPU_XLR
911 select SYS_SUPPORTS_SMP
914 select SYS_SUPPORTS_32BIT_KERNEL
915 select SYS_SUPPORTS_64BIT_KERNEL
916 select ARCH_PHYS_ADDR_T_64BIT
917 select SYS_SUPPORTS_BIG_ENDIAN
918 select SYS_SUPPORTS_HIGHMEM
920 select NR_CPUS_DEFAULT_32
924 select ZONE_DMA32 if 64BIT
926 select SYS_HAS_EARLY_PRINTK
927 select SYS_SUPPORTS_ZBOOT
928 select SYS_SUPPORTS_ZBOOT_UART16550
930 Support for systems based on Netlogic XLR and XLS processors.
931 Say Y here if you have a XLR or XLS based board.
934 bool "Netlogic XLP based systems"
937 select SYS_HAS_CPU_XLP
938 select SYS_SUPPORTS_SMP
940 select SYS_SUPPORTS_32BIT_KERNEL
941 select SYS_SUPPORTS_64BIT_KERNEL
942 select ARCH_PHYS_ADDR_T_64BIT
944 select SYS_SUPPORTS_BIG_ENDIAN
945 select SYS_SUPPORTS_LITTLE_ENDIAN
946 select SYS_SUPPORTS_HIGHMEM
948 select NR_CPUS_DEFAULT_32
952 select ZONE_DMA32 if 64BIT
954 select SYS_HAS_EARLY_PRINTK
956 select SYS_SUPPORTS_ZBOOT
957 select SYS_SUPPORTS_ZBOOT_UART16550
959 This board is based on Netlogic XLP Processor.
960 Say Y here if you have a XLP based board.
963 bool "Para-Virtualized guest system"
967 select SYS_SUPPORTS_64BIT_KERNEL
968 select SYS_SUPPORTS_32BIT_KERNEL
969 select SYS_SUPPORTS_BIG_ENDIAN
970 select SYS_SUPPORTS_SMP
971 select NR_CPUS_DEFAULT_4
972 select SYS_HAS_EARLY_PRINTK
973 select SYS_HAS_CPU_MIPS32_R2
974 select SYS_HAS_CPU_MIPS64_R2
975 select SYS_HAS_CPU_CAVIUM_OCTEON
979 This option supports guest running under ????
983 source "arch/mips/alchemy/Kconfig"
984 source "arch/mips/ath25/Kconfig"
985 source "arch/mips/ath79/Kconfig"
986 source "arch/mips/bcm47xx/Kconfig"
987 source "arch/mips/bcm63xx/Kconfig"
988 source "arch/mips/bmips/Kconfig"
989 source "arch/mips/jazz/Kconfig"
990 source "arch/mips/jz4740/Kconfig"
991 source "arch/mips/lantiq/Kconfig"
992 source "arch/mips/lasat/Kconfig"
993 source "arch/mips/pic32/Kconfig"
994 source "arch/mips/pistachio/Kconfig"
995 source "arch/mips/pmcs-msp71xx/Kconfig"
996 source "arch/mips/ralink/Kconfig"
997 source "arch/mips/sgi-ip27/Kconfig"
998 source "arch/mips/sibyte/Kconfig"
999 source "arch/mips/txx9/Kconfig"
1000 source "arch/mips/vr41xx/Kconfig"
1001 source "arch/mips/cavium-octeon/Kconfig"
1002 source "arch/mips/loongson32/Kconfig"
1003 source "arch/mips/loongson64/Kconfig"
1004 source "arch/mips/netlogic/Kconfig"
1005 source "arch/mips/paravirt/Kconfig"
1006 source "arch/mips/xilfpga/Kconfig"
1010 config RWSEM_GENERIC_SPINLOCK
1014 config RWSEM_XCHGADD_ALGORITHM
1017 config ARCH_HAS_ILOG2_U32
1021 config ARCH_HAS_ILOG2_U64
1025 config GENERIC_HWEIGHT
1029 config GENERIC_CALIBRATE_DELAY
1033 config SCHED_OMIT_FRAME_POINTER
1038 # Select some configuration options automatically based on user selections.
1043 config ARCH_MAY_HAVE_PC_FDC
1079 config MIPS_CLOCK_VSYSCALL
1080 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1089 config ARCH_DMA_ADDR_T_64BIT
1090 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1092 config ARCH_SUPPORTS_UPROBES
1095 config DMA_MAYBE_COHERENT
1096 select DMA_NONCOHERENT
1102 config DMA_NONCOHERENT
1104 select NEED_DMA_MAP_STATE
1106 config NEED_DMA_MAP_STATE
1109 config SYS_HAS_EARLY_PRINTK
1113 bool "Support for hot-pluggable CPUs"
1114 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
1116 Say Y here to allow turning CPUs off and on. CPUs can be
1117 controlled through /sys/devices/system/cpu.
1118 (Note: power management support will enable this option
1119 automatically on SMP systems. )
1120 Say N if you want to disable CPU hotplug.
1122 config SYS_SUPPORTS_HOTPLUG_CPU
1125 config MIPS_BONITO64
1140 config NO_IOPORT_MAP
1146 config GENERIC_ISA_DMA
1148 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1151 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1153 select GENERIC_ISA_DMA
1158 config HOLES_IN_ZONE
1161 config SYS_SUPPORTS_RELOCATABLE
1164 Selected if the platform supports relocating the kernel.
1165 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1166 to allow access to command line and entropy sources.
1169 # Endianness selection. Sufficiently obscure so many users don't know what to
1170 # answer,so we try hard to limit the available choices. Also the use of a
1171 # choice statement should be more obvious to the user.
1174 prompt "Endianness selection"
1176 Some MIPS machines can be configured for either little or big endian
1177 byte order. These modes require different kernels and a different
1178 Linux distribution. In general there is one preferred byteorder for a
1179 particular system but some systems are just as commonly used in the
1180 one or the other endianness.
1182 config CPU_BIG_ENDIAN
1184 depends on SYS_SUPPORTS_BIG_ENDIAN
1186 config CPU_LITTLE_ENDIAN
1187 bool "Little endian"
1188 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1195 config SYS_SUPPORTS_APM_EMULATION
1198 config SYS_SUPPORTS_BIG_ENDIAN
1201 config SYS_SUPPORTS_LITTLE_ENDIAN
1204 config SYS_SUPPORTS_HUGETLBFS
1206 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1209 config MIPS_HUGE_TLB_SUPPORT
1210 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1227 config PCI_GT64XXX_PCI0
1230 config NO_EXCEPT_FILL
1237 select DMA_NONCOHERENT
1239 select SWAP_IO_SPACE
1240 select SYS_HAS_CPU_R5500
1241 select SYS_SUPPORTS_32BIT_KERNEL
1242 select SYS_SUPPORTS_64BIT_KERNEL
1243 select SYS_SUPPORTS_BIG_ENDIAN
1250 select DMA_NONCOHERENT
1251 select SYS_HAS_CPU_MIPS32_R2
1252 select SYS_SUPPORTS_32BIT_KERNEL
1253 select SYS_SUPPORTS_LITTLE_ENDIAN
1254 select SYS_SUPPORTS_BIG_ENDIAN
1255 select SYS_SUPPORTS_MIPS16
1256 select CPU_MIPSR2_IRQ_VI
1265 config SWAP_IO_SPACE
1268 config SGI_HAS_INDYDOG
1280 config SGI_HAS_ZILOG
1283 config SGI_HAS_I8042
1286 config DEFAULT_SGI_PARTITION
1298 config MIPS_L1_CACHE_SHIFT_4
1301 config MIPS_L1_CACHE_SHIFT_5
1304 config MIPS_L1_CACHE_SHIFT_6
1307 config MIPS_L1_CACHE_SHIFT_7
1310 config MIPS_L1_CACHE_SHIFT
1312 default "7" if MIPS_L1_CACHE_SHIFT_7
1313 default "6" if MIPS_L1_CACHE_SHIFT_6
1314 default "5" if MIPS_L1_CACHE_SHIFT_5
1315 default "4" if MIPS_L1_CACHE_SHIFT_4
1318 config HAVE_STD_PC_SERIAL_PORT
1322 bool "ARC console support"
1323 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1327 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1332 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1341 menu "CPU selection"
1347 config CPU_LOONGSON3
1348 bool "Loongson 3 CPU"
1349 depends on SYS_HAS_CPU_LOONGSON3
1350 select CPU_SUPPORTS_64BIT_KERNEL
1351 select CPU_SUPPORTS_HIGHMEM
1352 select CPU_SUPPORTS_HUGEPAGES
1353 select WEAK_ORDERING
1354 select WEAK_REORDERING_BEYOND_LLSC
1355 select MIPS_PGD_C0_CONTEXT
1358 The Loongson 3 processor implements the MIPS64R2 instruction
1359 set with many extensions.
1361 config LOONGSON3_ENHANCEMENT
1362 bool "New Loongson 3 CPU Enhancements"
1365 select CPU_HAS_PREFETCH
1366 depends on CPU_LOONGSON3
1368 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1369 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1370 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1371 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1372 Fast TLB refill support, etc.
1374 This option enable those enhancements which are not probed at run
1375 time. If you want a generic kernel to run on all Loongson 3 machines,
1376 please say 'N' here. If you want a high-performance kernel to run on
1377 new Loongson 3 machines only, please say 'Y' here.
1379 config CPU_LOONGSON2E
1381 depends on SYS_HAS_CPU_LOONGSON2E
1382 select CPU_LOONGSON2
1384 The Loongson 2E processor implements the MIPS III instruction set
1385 with many extensions.
1387 It has an internal FPGA northbridge, which is compatible to
1390 config CPU_LOONGSON2F
1392 depends on SYS_HAS_CPU_LOONGSON2F
1393 select CPU_LOONGSON2
1396 The Loongson 2F processor implements the MIPS III instruction set
1397 with many extensions.
1399 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1400 have a similar programming interface with FPGA northbridge used in
1403 config CPU_LOONGSON1B
1405 depends on SYS_HAS_CPU_LOONGSON1B
1406 select CPU_LOONGSON1
1407 select ARCH_WANT_OPTIONAL_GPIOLIB
1408 select LEDS_GPIO_REGISTER
1410 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1411 release 2 instruction set.
1413 config CPU_MIPS32_R1
1414 bool "MIPS32 Release 1"
1415 depends on SYS_HAS_CPU_MIPS32_R1
1416 select CPU_HAS_PREFETCH
1417 select CPU_SUPPORTS_32BIT_KERNEL
1418 select CPU_SUPPORTS_HIGHMEM
1420 Choose this option to build a kernel for release 1 or later of the
1421 MIPS32 architecture. Most modern embedded systems with a 32-bit
1422 MIPS processor are based on a MIPS32 processor. If you know the
1423 specific type of processor in your system, choose those that one
1424 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1425 Release 2 of the MIPS32 architecture is available since several
1426 years so chances are you even have a MIPS32 Release 2 processor
1427 in which case you should choose CPU_MIPS32_R2 instead for better
1430 config CPU_MIPS32_R2
1431 bool "MIPS32 Release 2"
1432 depends on SYS_HAS_CPU_MIPS32_R2
1433 select CPU_HAS_PREFETCH
1434 select CPU_SUPPORTS_32BIT_KERNEL
1435 select CPU_SUPPORTS_HIGHMEM
1436 select CPU_SUPPORTS_MSA
1439 Choose this option to build a kernel for release 2 or later of the
1440 MIPS32 architecture. Most modern embedded systems with a 32-bit
1441 MIPS processor are based on a MIPS32 processor. If you know the
1442 specific type of processor in your system, choose those that one
1443 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1445 config CPU_MIPS32_R6
1446 bool "MIPS32 Release 6"
1447 depends on SYS_HAS_CPU_MIPS32_R6
1448 select CPU_HAS_PREFETCH
1449 select CPU_SUPPORTS_32BIT_KERNEL
1450 select CPU_SUPPORTS_HIGHMEM
1451 select CPU_SUPPORTS_MSA
1454 select MIPS_O32_FP64_SUPPORT
1456 Choose this option to build a kernel for release 6 or later of the
1457 MIPS32 architecture. New MIPS processors, starting with the Warrior
1458 family, are based on a MIPS32r6 processor. If you own an older
1459 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1461 config CPU_MIPS64_R1
1462 bool "MIPS64 Release 1"
1463 depends on SYS_HAS_CPU_MIPS64_R1
1464 select CPU_HAS_PREFETCH
1465 select CPU_SUPPORTS_32BIT_KERNEL
1466 select CPU_SUPPORTS_64BIT_KERNEL
1467 select CPU_SUPPORTS_HIGHMEM
1468 select CPU_SUPPORTS_HUGEPAGES
1470 Choose this option to build a kernel for release 1 or later of the
1471 MIPS64 architecture. Many modern embedded systems with a 64-bit
1472 MIPS processor are based on a MIPS64 processor. If you know the
1473 specific type of processor in your system, choose those that one
1474 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1475 Release 2 of the MIPS64 architecture is available since several
1476 years so chances are you even have a MIPS64 Release 2 processor
1477 in which case you should choose CPU_MIPS64_R2 instead for better
1480 config CPU_MIPS64_R2
1481 bool "MIPS64 Release 2"
1482 depends on SYS_HAS_CPU_MIPS64_R2
1483 select CPU_HAS_PREFETCH
1484 select CPU_SUPPORTS_32BIT_KERNEL
1485 select CPU_SUPPORTS_64BIT_KERNEL
1486 select CPU_SUPPORTS_HIGHMEM
1487 select CPU_SUPPORTS_HUGEPAGES
1488 select CPU_SUPPORTS_MSA
1490 Choose this option to build a kernel for release 2 or later of the
1491 MIPS64 architecture. Many modern embedded systems with a 64-bit
1492 MIPS processor are based on a MIPS64 processor. If you know the
1493 specific type of processor in your system, choose those that one
1494 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1496 config CPU_MIPS64_R6
1497 bool "MIPS64 Release 6"
1498 depends on SYS_HAS_CPU_MIPS64_R6
1499 select CPU_HAS_PREFETCH
1500 select CPU_SUPPORTS_32BIT_KERNEL
1501 select CPU_SUPPORTS_64BIT_KERNEL
1502 select CPU_SUPPORTS_HIGHMEM
1503 select CPU_SUPPORTS_MSA
1505 select MIPS_O32_FP64_SUPPORT if MIPS32_O32
1507 Choose this option to build a kernel for release 6 or later of the
1508 MIPS64 architecture. New MIPS processors, starting with the Warrior
1509 family, are based on a MIPS64r6 processor. If you own an older
1510 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1514 depends on SYS_HAS_CPU_R3000
1516 select CPU_SUPPORTS_32BIT_KERNEL
1517 select CPU_SUPPORTS_HIGHMEM
1519 Please make sure to pick the right CPU type. Linux/MIPS is not
1520 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1521 *not* work on R4000 machines and vice versa. However, since most
1522 of the supported machines have an R4000 (or similar) CPU, R4x00
1523 might be a safe bet. If the resulting kernel does not work,
1524 try to recompile with R3000.
1528 depends on SYS_HAS_CPU_TX39XX
1529 select CPU_SUPPORTS_32BIT_KERNEL
1533 depends on SYS_HAS_CPU_VR41XX
1534 select CPU_SUPPORTS_32BIT_KERNEL
1535 select CPU_SUPPORTS_64BIT_KERNEL
1537 The options selects support for the NEC VR4100 series of processors.
1538 Only choose this option if you have one of these processors as a
1539 kernel built with this option will not run on any other type of
1540 processor or vice versa.
1544 depends on SYS_HAS_CPU_R4300
1545 select CPU_SUPPORTS_32BIT_KERNEL
1546 select CPU_SUPPORTS_64BIT_KERNEL
1548 MIPS Technologies R4300-series processors.
1552 depends on SYS_HAS_CPU_R4X00
1553 select CPU_SUPPORTS_32BIT_KERNEL
1554 select CPU_SUPPORTS_64BIT_KERNEL
1555 select CPU_SUPPORTS_HUGEPAGES
1557 MIPS Technologies R4000-series processors other than 4300, including
1558 the R4000, R4400, R4600, and 4700.
1562 depends on SYS_HAS_CPU_TX49XX
1563 select CPU_HAS_PREFETCH
1564 select CPU_SUPPORTS_32BIT_KERNEL
1565 select CPU_SUPPORTS_64BIT_KERNEL
1566 select CPU_SUPPORTS_HUGEPAGES
1570 depends on SYS_HAS_CPU_R5000
1571 select CPU_SUPPORTS_32BIT_KERNEL
1572 select CPU_SUPPORTS_64BIT_KERNEL
1573 select CPU_SUPPORTS_HUGEPAGES
1575 MIPS Technologies R5000-series processors other than the Nevada.
1579 depends on SYS_HAS_CPU_R5432
1580 select CPU_SUPPORTS_32BIT_KERNEL
1581 select CPU_SUPPORTS_64BIT_KERNEL
1582 select CPU_SUPPORTS_HUGEPAGES
1586 depends on SYS_HAS_CPU_R5500
1587 select CPU_SUPPORTS_32BIT_KERNEL
1588 select CPU_SUPPORTS_64BIT_KERNEL
1589 select CPU_SUPPORTS_HUGEPAGES
1591 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1596 depends on SYS_HAS_CPU_R6000
1597 select CPU_SUPPORTS_32BIT_KERNEL
1599 MIPS Technologies R6000 and R6000A series processors. Note these
1600 processors are extremely rare and the support for them is incomplete.
1604 depends on SYS_HAS_CPU_NEVADA
1605 select CPU_SUPPORTS_32BIT_KERNEL
1606 select CPU_SUPPORTS_64BIT_KERNEL
1607 select CPU_SUPPORTS_HUGEPAGES
1609 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1613 depends on SYS_HAS_CPU_R8000
1614 select CPU_HAS_PREFETCH
1615 select CPU_SUPPORTS_64BIT_KERNEL
1617 MIPS Technologies R8000 processors. Note these processors are
1618 uncommon and the support for them is incomplete.
1622 depends on SYS_HAS_CPU_R10000
1623 select CPU_HAS_PREFETCH
1624 select CPU_SUPPORTS_32BIT_KERNEL
1625 select CPU_SUPPORTS_64BIT_KERNEL
1626 select CPU_SUPPORTS_HIGHMEM
1627 select CPU_SUPPORTS_HUGEPAGES
1629 MIPS Technologies R10000-series processors.
1633 depends on SYS_HAS_CPU_RM7000
1634 select CPU_HAS_PREFETCH
1635 select CPU_SUPPORTS_32BIT_KERNEL
1636 select CPU_SUPPORTS_64BIT_KERNEL
1637 select CPU_SUPPORTS_HIGHMEM
1638 select CPU_SUPPORTS_HUGEPAGES
1642 depends on SYS_HAS_CPU_SB1
1643 select CPU_SUPPORTS_32BIT_KERNEL
1644 select CPU_SUPPORTS_64BIT_KERNEL
1645 select CPU_SUPPORTS_HIGHMEM
1646 select CPU_SUPPORTS_HUGEPAGES
1647 select WEAK_ORDERING
1649 config CPU_CAVIUM_OCTEON
1650 bool "Cavium Octeon processor"
1651 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1652 select CPU_HAS_PREFETCH
1653 select CPU_SUPPORTS_64BIT_KERNEL
1654 select WEAK_ORDERING
1655 select CPU_SUPPORTS_HIGHMEM
1656 select CPU_SUPPORTS_HUGEPAGES
1657 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1658 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1659 select MIPS_L1_CACHE_SHIFT_7
1661 The Cavium Octeon processor is a highly integrated chip containing
1662 many ethernet hardware widgets for networking tasks. The processor
1663 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1664 Full details can be found at http://www.caviumnetworks.com.
1667 bool "Broadcom BMIPS"
1668 depends on SYS_HAS_CPU_BMIPS
1670 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1671 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1672 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1673 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1674 select CPU_SUPPORTS_32BIT_KERNEL
1675 select DMA_NONCOHERENT
1677 select SWAP_IO_SPACE
1678 select WEAK_ORDERING
1679 select CPU_SUPPORTS_HIGHMEM
1680 select CPU_HAS_PREFETCH
1682 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1685 bool "Netlogic XLR SoC"
1686 depends on SYS_HAS_CPU_XLR
1687 select CPU_SUPPORTS_32BIT_KERNEL
1688 select CPU_SUPPORTS_64BIT_KERNEL
1689 select CPU_SUPPORTS_HIGHMEM
1690 select CPU_SUPPORTS_HUGEPAGES
1691 select WEAK_ORDERING
1692 select WEAK_REORDERING_BEYOND_LLSC
1694 Netlogic Microsystems XLR/XLS processors.
1697 bool "Netlogic XLP SoC"
1698 depends on SYS_HAS_CPU_XLP
1699 select CPU_SUPPORTS_32BIT_KERNEL
1700 select CPU_SUPPORTS_64BIT_KERNEL
1701 select CPU_SUPPORTS_HIGHMEM
1702 select WEAK_ORDERING
1703 select WEAK_REORDERING_BEYOND_LLSC
1704 select CPU_HAS_PREFETCH
1706 select CPU_SUPPORTS_HUGEPAGES
1707 select MIPS_ASID_BITS_VARIABLE
1709 Netlogic Microsystems XLP processors.
1712 config CPU_MIPS32_3_5_FEATURES
1713 bool "MIPS32 Release 3.5 Features"
1714 depends on SYS_HAS_CPU_MIPS32_R3_5
1715 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1717 Choose this option to build a kernel for release 2 or later of the
1718 MIPS32 architecture including features from the 3.5 release such as
1719 support for Enhanced Virtual Addressing (EVA).
1721 config CPU_MIPS32_3_5_EVA
1722 bool "Enhanced Virtual Addressing (EVA)"
1723 depends on CPU_MIPS32_3_5_FEATURES
1727 Choose this option if you want to enable the Enhanced Virtual
1728 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1729 One of its primary benefits is an increase in the maximum size
1730 of lowmem (up to 3GB). If unsure, say 'N' here.
1732 config CPU_MIPS32_R5_FEATURES
1733 bool "MIPS32 Release 5 Features"
1734 depends on SYS_HAS_CPU_MIPS32_R5
1735 depends on CPU_MIPS32_R2
1737 Choose this option to build a kernel for release 2 or later of the
1738 MIPS32 architecture including features from release 5 such as
1739 support for Extended Physical Addressing (XPA).
1741 config CPU_MIPS32_R5_XPA
1742 bool "Extended Physical Addressing (XPA)"
1743 depends on CPU_MIPS32_R5_FEATURES
1745 depends on !PAGE_SIZE_4KB
1746 depends on SYS_SUPPORTS_HIGHMEM
1749 select ARCH_PHYS_ADDR_T_64BIT
1752 Choose this option if you want to enable the Extended Physical
1753 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1754 benefit is to increase physical addressing equal to or greater
1755 than 40 bits. Note that this has the side effect of turning on
1756 64-bit addressing which in turn makes the PTEs 64-bit in size.
1757 If unsure, say 'N' here.
1760 config CPU_NOP_WORKAROUNDS
1763 config CPU_JUMP_WORKAROUNDS
1766 config CPU_LOONGSON2F_WORKAROUNDS
1767 bool "Loongson 2F Workarounds"
1769 select CPU_NOP_WORKAROUNDS
1770 select CPU_JUMP_WORKAROUNDS
1772 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1773 require workarounds. Without workarounds the system may hang
1774 unexpectedly. For more information please refer to the gas
1775 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1777 Loongson 2F03 and later have fixed these issues and no workarounds
1778 are needed. The workarounds have no significant side effect on them
1779 but may decrease the performance of the system so this option should
1780 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1783 If unsure, please say Y.
1784 endif # CPU_LOONGSON2F
1786 config SYS_SUPPORTS_ZBOOT
1788 select HAVE_KERNEL_GZIP
1789 select HAVE_KERNEL_BZIP2
1790 select HAVE_KERNEL_LZ4
1791 select HAVE_KERNEL_LZMA
1792 select HAVE_KERNEL_LZO
1793 select HAVE_KERNEL_XZ
1795 config SYS_SUPPORTS_ZBOOT_UART16550
1797 select SYS_SUPPORTS_ZBOOT
1799 config SYS_SUPPORTS_ZBOOT_UART_PROM
1801 select SYS_SUPPORTS_ZBOOT
1803 config CPU_LOONGSON2
1805 select CPU_SUPPORTS_32BIT_KERNEL
1806 select CPU_SUPPORTS_64BIT_KERNEL
1807 select CPU_SUPPORTS_HIGHMEM
1808 select CPU_SUPPORTS_HUGEPAGES
1810 config CPU_LOONGSON1
1814 select CPU_HAS_PREFETCH
1815 select CPU_SUPPORTS_32BIT_KERNEL
1816 select CPU_SUPPORTS_HIGHMEM
1817 select CPU_SUPPORTS_CPUFREQ
1819 config CPU_BMIPS32_3300
1820 select SMP_UP if SMP
1823 config CPU_BMIPS4350
1825 select SYS_SUPPORTS_SMP
1826 select SYS_SUPPORTS_HOTPLUG_CPU
1828 config CPU_BMIPS4380
1830 select MIPS_L1_CACHE_SHIFT_6
1831 select SYS_SUPPORTS_SMP
1832 select SYS_SUPPORTS_HOTPLUG_CPU
1835 config CPU_BMIPS5000
1837 select MIPS_CPU_SCACHE
1838 select MIPS_L1_CACHE_SHIFT_7
1839 select SYS_SUPPORTS_SMP
1840 select SYS_SUPPORTS_HOTPLUG_CPU
1843 config SYS_HAS_CPU_LOONGSON3
1845 select CPU_SUPPORTS_CPUFREQ
1848 config SYS_HAS_CPU_LOONGSON2E
1851 config SYS_HAS_CPU_LOONGSON2F
1853 select CPU_SUPPORTS_CPUFREQ
1854 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1855 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1857 config SYS_HAS_CPU_LOONGSON1B
1860 config SYS_HAS_CPU_MIPS32_R1
1863 config SYS_HAS_CPU_MIPS32_R2
1866 config SYS_HAS_CPU_MIPS32_R3_5
1869 config SYS_HAS_CPU_MIPS32_R5
1872 config SYS_HAS_CPU_MIPS32_R6
1875 config SYS_HAS_CPU_MIPS64_R1
1878 config SYS_HAS_CPU_MIPS64_R2
1881 config SYS_HAS_CPU_MIPS64_R6
1884 config SYS_HAS_CPU_R3000
1887 config SYS_HAS_CPU_TX39XX
1890 config SYS_HAS_CPU_VR41XX
1893 config SYS_HAS_CPU_R4300
1896 config SYS_HAS_CPU_R4X00
1899 config SYS_HAS_CPU_TX49XX
1902 config SYS_HAS_CPU_R5000
1905 config SYS_HAS_CPU_R5432
1908 config SYS_HAS_CPU_R5500
1911 config SYS_HAS_CPU_R6000
1914 config SYS_HAS_CPU_NEVADA
1917 config SYS_HAS_CPU_R8000
1920 config SYS_HAS_CPU_R10000
1923 config SYS_HAS_CPU_RM7000
1926 config SYS_HAS_CPU_SB1
1929 config SYS_HAS_CPU_CAVIUM_OCTEON
1932 config SYS_HAS_CPU_BMIPS
1935 config SYS_HAS_CPU_BMIPS32_3300
1937 select SYS_HAS_CPU_BMIPS
1939 config SYS_HAS_CPU_BMIPS4350
1941 select SYS_HAS_CPU_BMIPS
1943 config SYS_HAS_CPU_BMIPS4380
1945 select SYS_HAS_CPU_BMIPS
1947 config SYS_HAS_CPU_BMIPS5000
1949 select SYS_HAS_CPU_BMIPS
1951 config SYS_HAS_CPU_XLR
1954 config SYS_HAS_CPU_XLP
1957 config MIPS_MALTA_PM
1958 depends on MIPS_MALTA
1964 # CPU may reorder R->R, R->W, W->R, W->W
1965 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1967 config WEAK_ORDERING
1971 # CPU may reorder reads and writes beyond LL/SC
1972 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1974 config WEAK_REORDERING_BEYOND_LLSC
1979 # These two indicate any level of the MIPS32 and MIPS64 architecture
1983 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1987 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1990 # These two indicate the revision of the architecture, either Release 1 or Release 2
1994 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1998 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2004 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2006 select HAVE_ARCH_BITREVERSE
2007 select MIPS_ASID_BITS_VARIABLE
2016 config SYS_SUPPORTS_32BIT_KERNEL
2018 config SYS_SUPPORTS_64BIT_KERNEL
2020 config CPU_SUPPORTS_32BIT_KERNEL
2022 config CPU_SUPPORTS_64BIT_KERNEL
2024 config CPU_SUPPORTS_CPUFREQ
2026 config CPU_SUPPORTS_ADDRWINCFG
2028 config CPU_SUPPORTS_HUGEPAGES
2030 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2032 config MIPS_PGD_C0_CONTEXT
2034 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
2037 # Set to y for ptrace access to watch registers.
2039 config HARDWARE_WATCHPOINTS
2041 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2046 prompt "Kernel code model"
2048 You should only select this option if you have a workload that
2049 actually benefits from 64-bit processing or if your machine has
2050 large memory. You will only be presented a single option in this
2051 menu if your system does not support both 32-bit and 64-bit kernels.
2054 bool "32-bit kernel"
2055 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2058 Select this option if you want to build a 32-bit kernel.
2061 bool "64-bit kernel"
2062 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2064 Select this option if you want to build a 64-bit kernel.
2069 bool "KVM Guest Kernel"
2070 depends on BROKEN_ON_SMP
2072 Select this option if building a guest kernel for KVM (Trap & Emulate)
2075 config KVM_GUEST_TIMER_FREQ
2076 int "Count/Compare Timer Frequency (MHz)"
2077 depends on KVM_GUEST
2080 Set this to non-zero if building a guest kernel for KVM to skip RTC
2081 emulation when determining guest CPU Frequency. Instead, the guest's
2082 timer frequency is specified directly.
2084 config MIPS_VA_BITS_48
2085 bool "48 bits virtual memory"
2088 Support a maximum at least 48 bits of application virtual memory.
2089 Default is 40 bits or less, depending on the CPU.
2090 This option result in a small memory overhead for page tables.
2091 This option is only supported with 16k and 64k page sizes.
2095 prompt "Kernel page size"
2096 default PAGE_SIZE_4KB
2098 config PAGE_SIZE_4KB
2100 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2101 depends on !MIPS_VA_BITS_48
2103 This option select the standard 4kB Linux page size. On some
2104 R3000-family processors this is the only available page size. Using
2105 4kB page size will minimize memory consumption and is therefore
2106 recommended for low memory systems.
2108 config PAGE_SIZE_8KB
2110 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2111 depends on !MIPS_VA_BITS_48
2113 Using 8kB page size will result in higher performance kernel at
2114 the price of higher memory consumption. This option is available
2115 only on R8000 and cnMIPS processors. Note that you will need a
2116 suitable Linux distribution to support this.
2118 config PAGE_SIZE_16KB
2120 depends on !CPU_R3000 && !CPU_TX39XX
2122 Using 16kB page size will result in higher performance kernel at
2123 the price of higher memory consumption. This option is available on
2124 all non-R3000 family processors. Note that you will need a suitable
2125 Linux distribution to support this.
2127 config PAGE_SIZE_32KB
2129 depends on CPU_CAVIUM_OCTEON
2130 depends on !MIPS_VA_BITS_48
2132 Using 32kB page size will result in higher performance kernel at
2133 the price of higher memory consumption. This option is available
2134 only on cnMIPS cores. Note that you will need a suitable Linux
2135 distribution to support this.
2137 config PAGE_SIZE_64KB
2139 depends on !CPU_R3000 && !CPU_TX39XX && !CPU_R6000
2141 Using 64kB page size will result in higher performance kernel at
2142 the price of higher memory consumption. This option is available on
2143 all non-R3000 family processor. Not that at the time of this
2144 writing this option is still high experimental.
2148 config FORCE_MAX_ZONEORDER
2149 int "Maximum zone order"
2150 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2151 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2152 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2153 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2154 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2155 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2159 The kernel memory allocator divides physically contiguous memory
2160 blocks into "zones", where each zone is a power of two number of
2161 pages. This option selects the largest power of two that the kernel
2162 keeps in the memory allocator. If you need to allocate very large
2163 blocks of physically contiguous memory, then you may need to
2164 increase this value.
2166 This config option is actually maximum order plus one. For example,
2167 a value of 11 means that the largest free memory block is 2^10 pages.
2169 The page size is not necessarily 4KB. Keep this in mind
2170 when choosing a value for this option.
2175 config IP22_CPU_SCACHE
2180 # Support for a MIPS32 / MIPS64 style S-caches
2182 config MIPS_CPU_SCACHE
2186 config R5000_CPU_SCACHE
2190 config RM7000_CPU_SCACHE
2194 config SIBYTE_DMA_PAGEOPS
2195 bool "Use DMA to clear/copy pages"
2198 Instead of using the CPU to zero and copy pages, use a Data Mover
2199 channel. These DMA channels are otherwise unused by the standard
2200 SiByte Linux port. Seems to give a small performance benefit.
2202 config CPU_HAS_PREFETCH
2205 config CPU_GENERIC_DUMP_TLB
2207 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2211 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2213 config CPU_R4K_CACHE_TLB
2215 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2218 bool "MIPS MT SMP support (1 TC on each available VPE)"
2219 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2220 select CPU_MIPSR2_IRQ_VI
2221 select CPU_MIPSR2_IRQ_EI
2226 select SYS_SUPPORTS_SMP
2227 select SYS_SUPPORTS_SCHED_SMT
2228 select MIPS_PERF_SHARED_TC_COUNTERS
2230 This is a kernel model which is known as SMVP. This is supported
2231 on cores with the MT ASE and uses the available VPEs to implement
2232 virtual processors which supports SMP. This is equivalent to the
2233 Intel Hyperthreading feature. For further information go to
2234 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2240 bool "SMT (multithreading) scheduler support"
2241 depends on SYS_SUPPORTS_SCHED_SMT
2244 SMT scheduler support improves the CPU scheduler's decision making
2245 when dealing with MIPS MT enabled cores at a cost of slightly
2246 increased overhead in some places. If unsure say N here.
2248 config SYS_SUPPORTS_SCHED_SMT
2251 config SYS_SUPPORTS_MULTITHREADING
2254 config MIPS_MT_FPAFF
2255 bool "Dynamic FPU affinity for FP-intensive threads"
2257 depends on MIPS_MT_SMP
2259 config MIPSR2_TO_R6_EMULATOR
2260 bool "MIPS R2-to-R6 emulator"
2261 depends on CPU_MIPSR6 && !SMP
2264 Choose this option if you want to run non-R6 MIPS userland code.
2265 Even if you say 'Y' here, the emulator will still be disabled by
2266 default. You can enable it using the 'mipsr2emu' kernel option.
2267 The only reason this is a build-time option is to save ~14K from the
2269 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2270 depends on SMP && CPU_MIPSR6
2272 config MIPS_VPE_LOADER
2273 bool "VPE loader support."
2274 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2275 select CPU_MIPSR2_IRQ_VI
2276 select CPU_MIPSR2_IRQ_EI
2279 Includes a loader for loading an elf relocatable object
2280 onto another VPE and running it.
2282 config MIPS_VPE_LOADER_CMP
2285 depends on MIPS_VPE_LOADER && MIPS_CMP
2287 config MIPS_VPE_LOADER_MT
2290 depends on MIPS_VPE_LOADER && !MIPS_CMP
2292 config MIPS_VPE_LOADER_TOM
2293 bool "Load VPE program into memory hidden from linux"
2294 depends on MIPS_VPE_LOADER
2297 The loader can use memory that is present but has been hidden from
2298 Linux using the kernel command line option "mem=xxMB". It's up to
2299 you to ensure the amount you put in the option and the space your
2300 program requires is less or equal to the amount physically present.
2302 config MIPS_VPE_APSP_API
2303 bool "Enable support for AP/SP API (RTLX)"
2304 depends on MIPS_VPE_LOADER
2307 config MIPS_VPE_APSP_API_CMP
2310 depends on MIPS_VPE_APSP_API && MIPS_CMP
2312 config MIPS_VPE_APSP_API_MT
2315 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2318 bool "MIPS CMP framework support (DEPRECATED)"
2319 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2322 select SYS_SUPPORTS_SMP
2323 select WEAK_ORDERING
2326 Select this if you are using a bootloader which implements the "CMP
2327 framework" protocol (ie. YAMON) and want your kernel to make use of
2328 its ability to start secondary CPUs.
2330 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2334 bool "MIPS Coherent Processing System support"
2335 depends on SYS_SUPPORTS_MIPS_CPS
2338 select MIPS_CPS_PM if HOTPLUG_CPU
2340 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2341 select SYS_SUPPORTS_HOTPLUG_CPU
2342 select SYS_SUPPORTS_SMP
2343 select WEAK_ORDERING
2345 Select this if you wish to run an SMP kernel across multiple cores
2346 within a MIPS Coherent Processing System. When this option is
2347 enabled the kernel will probe for other cores and boot them with
2348 no external assistance. It is safe to enable this when hardware
2349 support is unavailable.
2362 config SB1_PASS_2_WORKAROUNDS
2364 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2367 config SB1_PASS_2_1_WORKAROUNDS
2369 depends on CPU_SB1 && CPU_SB1_PASS_2
2373 config ARCH_PHYS_ADDR_T_64BIT
2377 prompt "SmartMIPS or microMIPS ASE support"
2379 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2382 Select this if you want neither microMIPS nor SmartMIPS support
2384 config CPU_HAS_SMARTMIPS
2385 depends on SYS_SUPPORTS_SMARTMIPS
2388 SmartMIPS is a extension of the MIPS32 architecture aimed at
2389 increased security at both hardware and software level for
2390 smartcards. Enabling this option will allow proper use of the
2391 SmartMIPS instructions by Linux applications. However a kernel with
2392 this option will not work on a MIPS core without SmartMIPS core. If
2393 you don't know you probably don't have SmartMIPS and should say N
2396 config CPU_MICROMIPS
2397 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2400 When this option is enabled the kernel will be built using the
2406 bool "Support for the MIPS SIMD Architecture"
2407 depends on CPU_SUPPORTS_MSA
2408 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2410 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2411 and a set of SIMD instructions to operate on them. When this option
2412 is enabled the kernel will support allocating & switching MSA
2413 vector register contexts. If you know that your kernel will only be
2414 running on CPUs which do not support MSA or that your userland will
2415 not be making use of it then you may wish to say N here to reduce
2416 the size & complexity of your kernel.
2430 # Vectored interrupt mode is an R2 feature
2432 config CPU_MIPSR2_IRQ_VI
2436 # Extended interrupt mode is an R2 feature
2438 config CPU_MIPSR2_IRQ_EI
2443 depends on !CPU_R3000
2449 config CPU_DADDI_WORKAROUNDS
2452 config CPU_R4000_WORKAROUNDS
2454 select CPU_R4400_WORKAROUNDS
2456 config CPU_R4400_WORKAROUNDS
2459 config MIPS_ASID_SHIFT
2461 default 6 if CPU_R3000 || CPU_TX39XX
2462 default 4 if CPU_R8000
2465 config MIPS_ASID_BITS
2467 default 0 if MIPS_ASID_BITS_VARIABLE
2468 default 6 if CPU_R3000 || CPU_TX39XX
2471 config MIPS_ASID_BITS_VARIABLE
2475 # - Highmem only makes sense for the 32-bit kernel.
2476 # - The current highmem code will only work properly on physically indexed
2477 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2478 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2479 # moment we protect the user and offer the highmem option only on machines
2480 # where it's known to be safe. This will not offer highmem on a few systems
2481 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2482 # indexed CPUs but we're playing safe.
2483 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2484 # know they might have memory configurations that could make use of highmem
2488 bool "High Memory Support"
2489 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2491 config CPU_SUPPORTS_HIGHMEM
2494 config SYS_SUPPORTS_HIGHMEM
2497 config SYS_SUPPORTS_SMARTMIPS
2500 config SYS_SUPPORTS_MICROMIPS
2503 config SYS_SUPPORTS_MIPS16
2506 This option must be set if a kernel might be executed on a MIPS16-
2507 enabled CPU even if MIPS16 is not actually being used. In other
2508 words, it makes the kernel MIPS16-tolerant.
2510 config CPU_SUPPORTS_MSA
2513 config ARCH_FLATMEM_ENABLE
2515 depends on !NUMA && !CPU_LOONGSON2
2517 config ARCH_DISCONTIGMEM_ENABLE
2519 default y if SGI_IP27
2521 Say Y to support efficient handling of discontiguous physical memory,
2522 for architectures which are either NUMA (Non-Uniform Memory Access)
2523 or have huge holes in the physical address space for other reasons.
2524 See <file:Documentation/vm/numa> for more.
2526 config ARCH_SPARSEMEM_ENABLE
2528 select SPARSEMEM_STATIC
2532 depends on SYS_SUPPORTS_NUMA
2534 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2535 Access). This option improves performance on systems with more
2536 than two nodes; on two node systems it is generally better to
2537 leave it disabled; on single node systems disable this option
2540 config SYS_SUPPORTS_NUMA
2544 bool "Relocatable kernel"
2545 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6)
2547 This builds a kernel image that retains relocation information
2548 so it can be loaded someplace besides the default 1MB.
2549 The relocations make the kernel binary about 15% larger,
2550 but are discarded at runtime
2552 config RELOCATION_TABLE_SIZE
2553 hex "Relocation table size"
2554 depends on RELOCATABLE
2555 range 0x0 0x01000000
2556 default "0x00100000"
2558 A table of relocation data will be appended to the kernel binary
2559 and parsed at boot to fix up the relocated kernel.
2561 This option allows the amount of space reserved for the table to be
2562 adjusted, although the default of 1Mb should be ok in most cases.
2564 The build will fail and a valid size suggested if this is too small.
2566 If unsure, leave at the default value.
2568 config RANDOMIZE_BASE
2569 bool "Randomize the address of the kernel image"
2570 depends on RELOCATABLE
2572 Randomizes the physical and virtual address at which the
2573 kernel image is loaded, as a security feature that
2574 deters exploit attempts relying on knowledge of the location
2575 of kernel internals.
2577 Entropy is generated using any coprocessor 0 registers available.
2579 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2583 config RANDOMIZE_BASE_MAX_OFFSET
2584 hex "Maximum kASLR offset" if EXPERT
2585 depends on RANDOMIZE_BASE
2586 range 0x0 0x40000000 if EVA || 64BIT
2587 range 0x0 0x08000000
2588 default "0x01000000"
2590 When kASLR is active, this provides the maximum offset that will
2591 be applied to the kernel image. It should be set according to the
2592 amount of physical RAM available in the target system minus
2593 PHYSICAL_START and must be a power of 2.
2595 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2596 EVA or 64-bit. The default is 16Mb.
2601 depends on NEED_MULTIPLE_NODES
2603 config HW_PERF_EVENTS
2604 bool "Enable hardware performance counter support for perf events"
2605 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2608 Enable hardware performance counter support for perf events. If
2609 disabled, perf events will use software events only.
2614 bool "Multi-Processing support"
2615 depends on SYS_SUPPORTS_SMP
2617 This enables support for systems with more than one CPU. If you have
2618 a system with only one CPU, say N. If you have a system with more
2619 than one CPU, say Y.
2621 If you say N here, the kernel will run on uni- and multiprocessor
2622 machines, but will use only one CPU of a multiprocessor machine. If
2623 you say Y here, the kernel will run on many, but not all,
2624 uniprocessor machines. On a uniprocessor machine, the kernel
2625 will run faster if you say N here.
2627 People using multiprocessor machines who say Y here should also say
2628 Y to "Enhanced Real Time Clock Support", below.
2630 See also the SMP-HOWTO available at
2631 <http://www.tldp.org/docs.html#howto>.
2633 If you don't know what to do here, say N.
2638 config SYS_SUPPORTS_MIPS_CMP
2641 config SYS_SUPPORTS_MIPS_CPS
2644 config SYS_SUPPORTS_SMP
2647 config NR_CPUS_DEFAULT_4
2650 config NR_CPUS_DEFAULT_8
2653 config NR_CPUS_DEFAULT_16
2656 config NR_CPUS_DEFAULT_32
2659 config NR_CPUS_DEFAULT_64
2663 int "Maximum number of CPUs (2-256)"
2666 default "4" if NR_CPUS_DEFAULT_4
2667 default "8" if NR_CPUS_DEFAULT_8
2668 default "16" if NR_CPUS_DEFAULT_16
2669 default "32" if NR_CPUS_DEFAULT_32
2670 default "64" if NR_CPUS_DEFAULT_64
2672 This allows you to specify the maximum number of CPUs which this
2673 kernel will support. The maximum supported value is 32 for 32-bit
2674 kernel and 64 for 64-bit kernels; the minimum value which makes
2675 sense is 1 for Qemu (useful only for kernel debugging purposes)
2676 and 2 for all others.
2678 This is purely to save memory - each supported CPU adds
2679 approximately eight kilobytes to the kernel image. For best
2680 performance should round up your number of processors to the next
2683 config MIPS_PERF_SHARED_TC_COUNTERS
2687 # Timer Interrupt Frequency Configuration
2691 prompt "Timer frequency"
2694 Allows the configuration of the timer frequency.
2697 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2700 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2703 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2706 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2709 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2712 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2715 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2718 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2722 config SYS_SUPPORTS_24HZ
2725 config SYS_SUPPORTS_48HZ
2728 config SYS_SUPPORTS_100HZ
2731 config SYS_SUPPORTS_128HZ
2734 config SYS_SUPPORTS_250HZ
2737 config SYS_SUPPORTS_256HZ
2740 config SYS_SUPPORTS_1000HZ
2743 config SYS_SUPPORTS_1024HZ
2746 config SYS_SUPPORTS_ARBIT_HZ
2748 default y if !SYS_SUPPORTS_24HZ && \
2749 !SYS_SUPPORTS_48HZ && \
2750 !SYS_SUPPORTS_100HZ && \
2751 !SYS_SUPPORTS_128HZ && \
2752 !SYS_SUPPORTS_250HZ && \
2753 !SYS_SUPPORTS_256HZ && \
2754 !SYS_SUPPORTS_1000HZ && \
2755 !SYS_SUPPORTS_1024HZ
2761 default 100 if HZ_100
2762 default 128 if HZ_128
2763 default 250 if HZ_250
2764 default 256 if HZ_256
2765 default 1000 if HZ_1000
2766 default 1024 if HZ_1024
2769 def_bool HIGH_RES_TIMERS
2771 source "kernel/Kconfig.preempt"
2774 bool "Kexec system call"
2777 kexec is a system call that implements the ability to shutdown your
2778 current kernel, and to start another kernel. It is like a reboot
2779 but it is independent of the system firmware. And like a reboot
2780 you can start any kernel with it, not just Linux.
2782 The name comes from the similarity to the exec system call.
2784 It is an ongoing process to be certain the hardware in a machine
2785 is properly shutdown, so do not be surprised if this code does not
2786 initially work for you. As of this writing the exact hardware
2787 interface is strongly in flux, so no good recommendation can be
2791 bool "Kernel crash dumps"
2793 Generate crash dump after being started by kexec.
2794 This should be normally only set in special crash dump kernels
2795 which are loaded in the main kernel with kexec-tools into
2796 a specially reserved region and then later executed after
2797 a crash by kdump/kexec. The crash dump kernel must be compiled
2798 to a memory address not used by the main kernel or firmware using
2801 config PHYSICAL_START
2802 hex "Physical address where the kernel is loaded"
2803 default "0xffffffff84000000" if 64BIT
2804 default "0x84000000" if 32BIT
2805 depends on CRASH_DUMP
2807 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2808 If you plan to use kernel for capturing the crash dump change
2809 this value to start of the reserved region (the "X" value as
2810 specified in the "crashkernel=YM@XM" command line boot parameter
2811 passed to the panic-ed kernel).
2814 bool "Enable seccomp to safely compute untrusted bytecode"
2818 This kernel feature is useful for number crunching applications
2819 that may need to compute untrusted bytecode during their
2820 execution. By using pipes or other transports made available to
2821 the process as file descriptors supporting the read/write
2822 syscalls, it's possible to isolate those applications in
2823 their own address space using seccomp. Once seccomp is
2824 enabled via /proc/<pid>/seccomp, it cannot be disabled
2825 and the task is only allowed to execute a few safe syscalls
2826 defined by each seccomp mode.
2828 If unsure, say Y. Only embedded should say N here.
2830 config MIPS_O32_FP64_SUPPORT
2831 bool "Support for O32 binaries using 64-bit FP"
2832 depends on 32BIT || MIPS32_O32
2834 When this is enabled, the kernel will support use of 64-bit floating
2835 point registers with binaries using the O32 ABI along with the
2836 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2837 32-bit MIPS systems this support is at the cost of increasing the
2838 size and complexity of the compiled FPU emulator. Thus if you are
2839 running a MIPS32 system and know that none of your userland binaries
2840 will require 64-bit floating point, you may wish to reduce the size
2841 of your kernel & potentially improve FP emulation performance by
2844 Although binutils currently supports use of this flag the details
2845 concerning its effect upon the O32 ABI in userland are still being
2846 worked on. In order to avoid userland becoming dependant upon current
2847 behaviour before the details have been finalised, this option should
2848 be considered experimental and only enabled by those working upon
2856 select OF_EARLY_FLATTREE
2863 prompt "Kernel appended dtb support" if USE_OF
2864 default MIPS_NO_APPENDED_DTB
2866 config MIPS_NO_APPENDED_DTB
2869 Do not enable appended dtb support.
2871 config MIPS_ELF_APPENDED_DTB
2874 With this option, the boot code will look for a device tree binary
2875 DTB) included in the vmlinux ELF section .appended_dtb. By default
2876 it is empty and the DTB can be appended using binutils command
2879 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2881 This is meant as a backward compatiblity convenience for those
2882 systems with a bootloader that can't be upgraded to accommodate
2883 the documented boot protocol using a device tree.
2885 config MIPS_RAW_APPENDED_DTB
2888 With this option, the boot code will look for a device tree binary
2889 DTB) appended to raw vmlinux.bin (without decompressor).
2890 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2892 This is meant as a backward compatibility convenience for those
2893 systems with a bootloader that can't be upgraded to accommodate
2894 the documented boot protocol using a device tree.
2896 Beware that there is very little in terms of protection against
2897 this option being confused by leftover garbage in memory that might
2898 look like a DTB header after a reboot if no actual DTB is appended
2899 to vmlinux.bin. Do not leave this option active in a production kernel
2900 if you don't intend to always append a DTB.
2902 config MIPS_ZBOOT_APPENDED_DTB
2904 depends on SYS_SUPPORTS_ZBOOT
2906 With this option, the boot code will look for a device tree binary
2907 DTB) appended to raw vmlinuz.bin (with decompressor).
2908 (e.g. cat vmlinuz.bin <filename>.dtb > vmlinuz_w_dtb).
2910 This is meant as a backward compatibility convenience for those
2911 systems with a bootloader that can't be upgraded to accommodate
2912 the documented boot protocol using a device tree.
2914 Beware that there is very little in terms of protection against
2915 this option being confused by leftover garbage in memory that might
2916 look like a DTB header after a reboot if no actual DTB is appended
2917 to vmlinuz.bin. Do not leave this option active in a production kernel
2918 if you don't intend to always append a DTB.
2922 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2923 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2924 !MIPS_MALTA && !MIPS_SEAD3 && \
2926 default MIPS_CMDLINE_FROM_BOOTLOADER
2928 config MIPS_CMDLINE_FROM_DTB
2930 bool "Dtb kernel arguments if available"
2932 config MIPS_CMDLINE_DTB_EXTEND
2934 bool "Extend dtb kernel arguments with bootloader arguments"
2936 config MIPS_CMDLINE_FROM_BOOTLOADER
2937 bool "Bootloader kernel arguments if available"
2939 config MIPS_CMDLINE_BUILTIN_EXTEND
2940 depends on CMDLINE_BOOL
2941 bool "Extend builtin kernel arguments with bootloader arguments"
2946 config LOCKDEP_SUPPORT
2950 config STACKTRACE_SUPPORT
2954 config HAVE_LATENCYTOP_SUPPORT
2958 config PGTABLE_LEVELS
2960 default 3 if 64BIT && !PAGE_SIZE_64KB
2963 source "init/Kconfig"
2965 source "kernel/Kconfig.freezer"
2967 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2975 bool "Support for PCI controller"
2976 depends on HW_HAS_PCI
2978 select NO_GENERIC_PCI_IOPORT_MAP
2980 Find out whether you have a PCI motherboard. PCI is the name of a
2981 bus system, i.e. the way the CPU talks to the other stuff inside
2982 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2986 bool "Support for HT-linked PCI"
2988 depends on CPU_LOONGSON3
2992 Loongson family machines use Hyper-Transport bus for inter-core
2993 connection and device connection. The PCI bus is a subordinate
2994 linked at HT. Choose Y for Loongson-3 based machines.
2999 source "drivers/pci/Kconfig"
3002 # ISA support is now enabled via select. Too many systems still have the one
3003 # or other ISA chip on the board that users don't know about so don't expect
3004 # users to choose the right thing ...
3011 depends on HW_HAS_EISA
3013 select GENERIC_ISA_DMA
3015 The Extended Industry Standard Architecture (EISA) bus was
3016 developed as an open alternative to the IBM MicroChannel bus.
3018 The EISA bus provided some of the features of the IBM MicroChannel
3019 bus while maintaining backward compatibility with cards made for
3020 the older ISA bus. The EISA bus saw limited use between 1988 and
3021 1995 when it was made obsolete by the PCI bus.
3023 Say Y here if you are building a kernel for an EISA-based machine.
3027 source "drivers/eisa/Kconfig"
3030 bool "TURBOchannel support"
3031 depends on MACH_DECSTATION
3033 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3034 processors. TURBOchannel programming specifications are available
3036 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3038 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3039 Linux driver support status is documented at:
3040 <http://www.linux-mips.org/wiki/DECstation>
3050 select MIPS_EXTERNAL_TIMER
3058 source "drivers/pcmcia/Kconfig"
3061 tristate "RapidIO support"
3065 If you say Y here, the kernel will include drivers and
3066 infrastructure code to support RapidIO interconnect devices.
3068 source "drivers/rapidio/Kconfig"
3072 menu "Executable file formats"
3074 source "fs/Kconfig.binfmt"
3079 config MIPS32_COMPAT
3085 config SYSVIPC_COMPAT
3089 bool "Kernel support for o32 binaries"
3091 select ARCH_WANT_OLD_COMPAT_IPC
3093 select MIPS32_COMPAT
3094 select SYSVIPC_COMPAT if SYSVIPC
3096 Select this option if you want to run o32 binaries. These are pure
3097 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3098 existing binaries are in this format.
3103 bool "Kernel support for n32 binaries"
3106 select MIPS32_COMPAT
3107 select SYSVIPC_COMPAT if SYSVIPC
3109 Select this option if you want to run n32 binaries. These are
3110 64-bit binaries using 32-bit quantities for addressing and certain
3111 data that would normally be 64-bit. They are used in special
3118 default y if MIPS32_O32 || MIPS32_N32
3122 menu "Power management options"
3124 config ARCH_HIBERNATION_POSSIBLE
3126 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3128 config ARCH_SUSPEND_POSSIBLE
3130 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3132 source "kernel/power/Kconfig"
3136 config MIPS_EXTERNAL_TIMER
3139 menu "CPU Power Management"
3141 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3142 source "drivers/cpufreq/Kconfig"
3145 source "drivers/cpuidle/Kconfig"
3149 source "net/Kconfig"
3151 source "drivers/Kconfig"
3153 source "drivers/firmware/Kconfig"
3157 source "arch/mips/Kconfig.debug"
3159 source "security/Kconfig"
3161 source "crypto/Kconfig"
3163 source "lib/Kconfig"
3165 source "arch/mips/kvm/Kconfig"