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
12 select HAVE_IRQ_EXIT_ON_IRQ_STACK
14 select HAVE_PERF_EVENTS
15 select PERF_USE_VMALLOC
16 select HAVE_ARCH_COMPILER_H
18 select HAVE_ARCH_SECCOMP_FILTER
19 select HAVE_ARCH_TRACEHOOK
20 select HAVE_CBPF_JIT if !CPU_MICROMIPS
21 select HAVE_FUNCTION_TRACER
22 select HAVE_DYNAMIC_FTRACE
23 select HAVE_FTRACE_MCOUNT_RECORD
24 select HAVE_C_RECORDMCOUNT
25 select HAVE_FUNCTION_GRAPH_TRACER
27 select HAVE_KRETPROBES
28 select HAVE_SYSCALL_TRACEPOINTS
29 select HAVE_DEBUG_KMEMLEAK
30 select HAVE_SYSCALL_TRACEPOINTS
31 select ARCH_HAS_ELF_RANDOMIZE
32 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
33 select RTC_LIB if !MACH_LOONGSON64
34 select GENERIC_ATOMIC64 if !64BIT
35 select HAVE_DMA_CONTIGUOUS
36 select HAVE_DMA_API_DEBUG
37 select GENERIC_IRQ_PROBE
38 select GENERIC_IRQ_SHOW
39 select GENERIC_PCI_IOMAP
40 select HAVE_ARCH_JUMP_LABEL
41 select ARCH_WANT_IPC_PARSE_VERSION
42 select IRQ_FORCED_THREADING
44 select HAVE_MEMBLOCK_NODE_MAP
45 select ARCH_DISCARD_MEMBLOCK
46 select GENERIC_SMP_IDLE_THREAD
47 select BUILDTIME_EXTABLE_SORT
48 select GENERIC_CLOCKEVENTS
49 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
50 select GENERIC_CMOS_UPDATE
51 select HAVE_MOD_ARCH_SPECIFIC
54 select MODULES_USE_ELF_REL if MODULES
55 select MODULES_USE_ELF_RELA if MODULES && 64BIT
56 select CLONE_BACKWARDS
57 select HAVE_DEBUG_STACKOVERFLOW
58 select HAVE_CC_STACKPROTECTOR
59 select CPU_PM if CPU_IDLE
60 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
61 select ARCH_BINFMT_ELF_STATE
62 select SYSCTL_EXCEPTION_TRACE
63 select HAVE_VIRT_CPU_ACCOUNTING_GEN
64 select HAVE_IRQ_TIME_ACCOUNTING
65 select GENERIC_TIME_VSYSCALL
66 select ARCH_CLOCKSOURCE_DATA
67 select HANDLE_DOMAIN_IRQ
68 select HAVE_EXIT_THREAD
69 select HAVE_REGS_AND_STACK_ACCESS_API
70 select HAVE_ARCH_HARDENED_USERCOPY
72 menu "Machine selection"
79 bool "Generic board-agnostic MIPS kernel"
83 select CLKSRC_MIPS_GIC
85 select CPU_MIPSR2_IRQ_VI
86 select CPU_MIPSR2_IRQ_EI
88 select DMA_PERDEV_COHERENT
92 select MIPS_CPU_SCACHE
94 select MIPS_L1_CACHE_SHIFT_7
96 select PCI_DRIVERS_GENERIC
100 select SYS_HAS_CPU_MIPS32_R1
101 select SYS_HAS_CPU_MIPS32_R2
102 select SYS_HAS_CPU_MIPS32_R6
103 select SYS_HAS_CPU_MIPS64_R1
104 select SYS_HAS_CPU_MIPS64_R2
105 select SYS_HAS_CPU_MIPS64_R6
106 select SYS_SUPPORTS_32BIT_KERNEL
107 select SYS_SUPPORTS_64BIT_KERNEL
108 select SYS_SUPPORTS_BIG_ENDIAN
109 select SYS_SUPPORTS_HIGHMEM
110 select SYS_SUPPORTS_LITTLE_ENDIAN
111 select SYS_SUPPORTS_MICROMIPS
112 select SYS_SUPPORTS_MIPS_CPS
113 select SYS_SUPPORTS_MIPS16
114 select SYS_SUPPORTS_MULTITHREADING
115 select SYS_SUPPORTS_RELOCATABLE
116 select SYS_SUPPORTS_SMARTMIPS
117 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
118 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
119 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
120 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
121 select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
122 select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
125 Select this to build a kernel which aims to support multiple boards,
126 generally using a flattened device tree passed from the bootloader
127 using the boot protocol defined in the UHI (Unified Hosting
128 Interface) specification.
131 bool "Alchemy processor based machines"
132 select ARCH_PHYS_ADDR_T_64BIT
136 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
137 select SYS_HAS_CPU_MIPS32_R1
138 select SYS_SUPPORTS_32BIT_KERNEL
139 select SYS_SUPPORTS_APM_EMULATION
141 select SYS_SUPPORTS_ZBOOT
145 bool "Texas Instruments AR7"
147 select DMA_NONCOHERENT
151 select NO_EXCEPT_FILL
153 select SYS_HAS_CPU_MIPS32_R1
154 select SYS_HAS_EARLY_PRINTK
155 select SYS_SUPPORTS_32BIT_KERNEL
156 select SYS_SUPPORTS_LITTLE_ENDIAN
157 select SYS_SUPPORTS_MIPS16
158 select SYS_SUPPORTS_ZBOOT_UART16550
163 Support for the Texas Instruments AR7 System-on-a-Chip
164 family: TNETD7100, 7200 and 7300.
167 bool "Atheros AR231x/AR531x SoC support"
170 select DMA_NONCOHERENT
173 select SYS_HAS_CPU_MIPS32_R1
174 select SYS_SUPPORTS_BIG_ENDIAN
175 select SYS_SUPPORTS_32BIT_KERNEL
176 select SYS_HAS_EARLY_PRINTK
178 Support for Atheros AR231x and Atheros AR531x based boards
181 bool "Atheros AR71XX/AR724X/AR913X based boards"
182 select ARCH_HAS_RESET_CONTROLLER
186 select DMA_NONCOHERENT
193 select SYS_HAS_CPU_MIPS32_R2
194 select SYS_HAS_EARLY_PRINTK
195 select SYS_SUPPORTS_32BIT_KERNEL
196 select SYS_SUPPORTS_BIG_ENDIAN
197 select SYS_SUPPORTS_MIPS16
198 select SYS_SUPPORTS_ZBOOT_UART_PROM
201 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
204 bool "Broadcom Generic BMIPS kernel"
206 select NO_EXCEPT_FILL
212 select BCM6345_L1_IRQ
213 select BCM7038_L1_IRQ
214 select BCM7120_L2_IRQ
215 select BRCMSTB_L2_IRQ
217 select DMA_NONCOHERENT
218 select SYS_SUPPORTS_32BIT_KERNEL
219 select SYS_SUPPORTS_LITTLE_ENDIAN
220 select SYS_SUPPORTS_BIG_ENDIAN
221 select SYS_SUPPORTS_HIGHMEM
222 select SYS_HAS_CPU_BMIPS32_3300
223 select SYS_HAS_CPU_BMIPS4350
224 select SYS_HAS_CPU_BMIPS4380
225 select SYS_HAS_CPU_BMIPS5000
227 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
228 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
229 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
230 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
232 Build a generic DT-based kernel image that boots on select
233 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
234 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
235 must be set appropriately for your board.
238 bool "Broadcom BCM47XX based boards"
242 select DMA_NONCOHERENT
245 select SYS_HAS_CPU_MIPS32_R1
246 select NO_EXCEPT_FILL
247 select SYS_SUPPORTS_32BIT_KERNEL
248 select SYS_SUPPORTS_LITTLE_ENDIAN
249 select SYS_SUPPORTS_MIPS16
250 select SYS_HAS_EARLY_PRINTK
251 select USE_GENERIC_EARLY_PRINTK_8250
253 select LEDS_GPIO_REGISTER
257 Support for BCM47XX based boards
260 bool "Broadcom BCM63XX based boards"
265 select DMA_NONCOHERENT
267 select SYS_SUPPORTS_32BIT_KERNEL
268 select SYS_SUPPORTS_BIG_ENDIAN
269 select SYS_HAS_EARLY_PRINTK
273 select MIPS_L1_CACHE_SHIFT_4
275 Support for BCM63XX based boards
282 select DMA_NONCOHERENT
288 select PCI_GT64XXX_PCI0
290 select SYS_HAS_CPU_NEVADA
291 select SYS_HAS_EARLY_PRINTK
292 select SYS_SUPPORTS_32BIT_KERNEL
293 select SYS_SUPPORTS_64BIT_KERNEL
294 select SYS_SUPPORTS_LITTLE_ENDIAN
295 select USE_GENERIC_EARLY_PRINTK_8250
297 config MACH_DECSTATION
301 select CEVT_R4K if CPU_R4X00
303 select CSRC_R4K if CPU_R4X00
304 select CPU_DADDI_WORKAROUNDS if 64BIT
305 select CPU_R4000_WORKAROUNDS if 64BIT
306 select CPU_R4400_WORKAROUNDS if 64BIT
307 select DMA_NONCOHERENT
310 select SYS_HAS_CPU_R3000
311 select SYS_HAS_CPU_R4X00
312 select SYS_SUPPORTS_32BIT_KERNEL
313 select SYS_SUPPORTS_64BIT_KERNEL
314 select SYS_SUPPORTS_LITTLE_ENDIAN
315 select SYS_SUPPORTS_128HZ
316 select SYS_SUPPORTS_256HZ
317 select SYS_SUPPORTS_1024HZ
318 select MIPS_L1_CACHE_SHIFT_4
320 This enables support for DEC's MIPS based workstations. For details
321 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
322 DECstation porting pages on <http://decstation.unix-ag.org/>.
324 If you have one of the following DECstation Models you definitely
325 want to choose R4xx0 for the CPU Type:
332 otherwise choose R3000.
335 bool "Jazz family of machines"
338 select ARCH_MAY_HAVE_PC_FDC
341 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
342 select GENERIC_ISA_DMA
343 select HAVE_PCSPKR_PLATFORM
348 select SYS_HAS_CPU_R4X00
349 select SYS_SUPPORTS_32BIT_KERNEL
350 select SYS_SUPPORTS_64BIT_KERNEL
351 select SYS_SUPPORTS_100HZ
353 This a family of machines based on the MIPS R4030 chipset which was
354 used by several vendors to build RISC/os and Windows NT workstations.
355 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
356 Olivetti M700-10 workstations.
359 bool "Ingenic SoC based machines"
360 select SYS_SUPPORTS_32BIT_KERNEL
361 select SYS_SUPPORTS_LITTLE_ENDIAN
362 select SYS_SUPPORTS_ZBOOT_UART16550
363 select DMA_NONCOHERENT
367 select GENERIC_IRQ_CHIP
373 bool "Lantiq based platforms"
374 select DMA_NONCOHERENT
378 select SYS_HAS_CPU_MIPS32_R1
379 select SYS_HAS_CPU_MIPS32_R2
380 select SYS_SUPPORTS_BIG_ENDIAN
381 select SYS_SUPPORTS_32BIT_KERNEL
382 select SYS_SUPPORTS_MIPS16
383 select SYS_SUPPORTS_MULTITHREADING
384 select SYS_HAS_EARLY_PRINTK
391 select PINCTRL_LANTIQ
392 select ARCH_HAS_RESET_CONTROLLER
393 select RESET_CONTROLLER
396 bool "LASAT Networks platforms"
400 select DMA_NONCOHERENT
401 select SYS_HAS_EARLY_PRINTK
404 select PCI_GT64XXX_PCI0
406 select R5000_CPU_SCACHE
407 select SYS_HAS_CPU_R5000
408 select SYS_SUPPORTS_32BIT_KERNEL
409 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
410 select SYS_SUPPORTS_LITTLE_ENDIAN
412 config MACH_LOONGSON32
413 bool "Loongson-1 family of machines"
414 select SYS_SUPPORTS_ZBOOT
416 This enables support for the Loongson-1 family of machines.
418 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
419 the Institute of Computing Technology (ICT), Chinese Academy of
422 config MACH_LOONGSON64
423 bool "Loongson-2/3 family of machines"
424 select SYS_SUPPORTS_ZBOOT
426 This enables the support of Loongson-2/3 family of machines.
428 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
429 family of multi-core CPUs. They are both 64-bit general-purpose
430 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
431 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
432 in the People's Republic of China. The chief architect is Professor
435 config MACH_PISTACHIO
436 bool "IMG Pistachio SoC based boards"
440 select CLKSRC_MIPS_GIC
443 select DMA_NONCOHERENT
448 select MIPS_CPU_SCACHE
452 select SYS_HAS_CPU_MIPS32_R2
453 select SYS_SUPPORTS_32BIT_KERNEL
454 select SYS_SUPPORTS_LITTLE_ENDIAN
455 select SYS_SUPPORTS_MIPS_CPS
456 select SYS_SUPPORTS_MULTITHREADING
457 select SYS_SUPPORTS_RELOCATABLE
458 select SYS_SUPPORTS_ZBOOT
459 select SYS_HAS_EARLY_PRINTK
460 select USE_GENERIC_EARLY_PRINTK_8250
463 This enables support for the IMG Pistachio SoC platform.
466 bool "MIPSfpga Xilinx based boards"
476 select MIPS_CPU_SCACHE
477 select SYS_HAS_EARLY_PRINTK
478 select SYS_HAS_CPU_MIPS32_R2
479 select SYS_SUPPORTS_32BIT_KERNEL
480 select SYS_SUPPORTS_LITTLE_ENDIAN
481 select SYS_SUPPORTS_ZBOOT_UART16550
483 select USE_GENERIC_EARLY_PRINTK_8250
485 This enables support for the IMG University Program MIPSfpga platform.
488 bool "MIPS Malta board"
489 select ARCH_MAY_HAVE_PC_FDC
495 select CLKSRC_MIPS_GIC
497 select DMA_MAYBE_COHERENT
498 select GENERIC_ISA_DMA
499 select HAVE_PCSPKR_PLATFORM
506 select MIPS_CPU_SCACHE
507 select MIPS_L1_CACHE_SHIFT_6
508 select PCI_GT64XXX_PCI0
512 select SYS_HAS_CPU_MIPS32_R1
513 select SYS_HAS_CPU_MIPS32_R2
514 select SYS_HAS_CPU_MIPS32_R3_5
515 select SYS_HAS_CPU_MIPS32_R5
516 select SYS_HAS_CPU_MIPS32_R6
517 select SYS_HAS_CPU_MIPS64_R1
518 select SYS_HAS_CPU_MIPS64_R2
519 select SYS_HAS_CPU_MIPS64_R6
520 select SYS_HAS_CPU_NEVADA
521 select SYS_HAS_CPU_RM7000
522 select SYS_SUPPORTS_32BIT_KERNEL
523 select SYS_SUPPORTS_64BIT_KERNEL
524 select SYS_SUPPORTS_BIG_ENDIAN
525 select SYS_SUPPORTS_HIGHMEM
526 select SYS_SUPPORTS_LITTLE_ENDIAN
527 select SYS_SUPPORTS_MICROMIPS
528 select SYS_SUPPORTS_MIPS_CMP
529 select SYS_SUPPORTS_MIPS_CPS
530 select SYS_SUPPORTS_MIPS16
531 select SYS_SUPPORTS_MULTITHREADING
532 select SYS_SUPPORTS_SMARTMIPS
533 select SYS_SUPPORTS_ZBOOT
534 select SYS_SUPPORTS_RELOCATABLE
537 select ZONE_DMA32 if 64BIT
541 This enables support for the MIPS Technologies Malta evaluation
545 bool "Microchip PIC32 Family"
547 This enables support for the Microchip PIC32 family of platforms.
549 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
553 bool "NEC EMMA2RH Mark-eins board"
557 This enables support for the NEC Electronics Mark-eins boards.
560 bool "NEC VR4100 series based machines"
563 select SYS_HAS_CPU_VR41XX
564 select SYS_SUPPORTS_MIPS16
568 bool "NXP STB220 board"
571 Support for NXP Semiconductors STB220 Development Board.
578 Support for NXP Semiconductors STB225 Development Board.
581 bool "PMC-Sierra MSP chipsets"
584 select DMA_NONCOHERENT
586 select NO_EXCEPT_FILL
588 select SYS_HAS_CPU_MIPS32_R1
589 select SYS_HAS_CPU_MIPS32_R2
590 select SYS_SUPPORTS_32BIT_KERNEL
591 select SYS_SUPPORTS_BIG_ENDIAN
592 select SYS_SUPPORTS_MIPS16
595 select SERIAL_8250_CONSOLE
596 select USB_EHCI_BIG_ENDIAN_MMIO
597 select USB_EHCI_BIG_ENDIAN_DESC
599 This adds support for the PMC-Sierra family of Multi-Service
600 Processor System-On-A-Chips. These parts include a number
601 of integrated peripherals, interfaces and DSPs in addition to
602 a variety of MIPS cores.
605 bool "Ralink based machines"
609 select DMA_NONCOHERENT
612 select SYS_HAS_CPU_MIPS32_R1
613 select SYS_HAS_CPU_MIPS32_R2
614 select SYS_SUPPORTS_32BIT_KERNEL
615 select SYS_SUPPORTS_LITTLE_ENDIAN
616 select SYS_SUPPORTS_MIPS16
617 select SYS_HAS_EARLY_PRINTK
619 select ARCH_HAS_RESET_CONTROLLER
620 select RESET_CONTROLLER
623 bool "SGI IP22 (Indy/Indigo2)"
629 select DEFAULT_SGI_PARTITION
630 select DMA_NONCOHERENT
634 select IP22_CPU_SCACHE
636 select GENERIC_ISA_DMA_SUPPORT_BROKEN
638 select SGI_HAS_INDYDOG
644 select SYS_HAS_CPU_R4X00
645 select SYS_HAS_CPU_R5000
647 # Disable EARLY_PRINTK for now since it leads to overwritten prom
648 # memory during early boot on some machines.
650 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
651 # for a more details discussion
653 # select SYS_HAS_EARLY_PRINTK
654 select SYS_SUPPORTS_32BIT_KERNEL
655 select SYS_SUPPORTS_64BIT_KERNEL
656 select SYS_SUPPORTS_BIG_ENDIAN
657 select MIPS_L1_CACHE_SHIFT_7
659 This are the SGI Indy, Challenge S and Indigo2, as well as certain
660 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
661 that runs on these, say Y here.
664 bool "SGI IP27 (Origin200/2000)"
668 select DEFAULT_SGI_PARTITION
670 select SYS_HAS_EARLY_PRINTK
672 select NR_CPUS_DEFAULT_64
673 select SYS_HAS_CPU_R10000
674 select SYS_SUPPORTS_64BIT_KERNEL
675 select SYS_SUPPORTS_BIG_ENDIAN
676 select SYS_SUPPORTS_NUMA
677 select SYS_SUPPORTS_SMP
678 select MIPS_L1_CACHE_SHIFT_7
680 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
681 workstations. To compile a Linux kernel that runs on these, say Y
685 bool "SGI IP28 (Indigo2 R10k)"
691 select DEFAULT_SGI_PARTITION
692 select DMA_NONCOHERENT
693 select GENERIC_ISA_DMA_SUPPORT_BROKEN
699 select SGI_HAS_INDYDOG
705 select SYS_HAS_CPU_R10000
707 # Disable EARLY_PRINTK for now since it leads to overwritten prom
708 # memory during early boot on some machines.
710 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
711 # for a more details discussion
713 # select SYS_HAS_EARLY_PRINTK
714 select SYS_SUPPORTS_64BIT_KERNEL
715 select SYS_SUPPORTS_BIG_ENDIAN
716 select MIPS_L1_CACHE_SHIFT_7
718 This is the SGI Indigo2 with R10000 processor. To compile a Linux
719 kernel that runs on these, say Y here.
728 select DMA_NONCOHERENT
731 select R5000_CPU_SCACHE
732 select RM7000_CPU_SCACHE
733 select SYS_HAS_CPU_R5000
734 select SYS_HAS_CPU_R10000 if BROKEN
735 select SYS_HAS_CPU_RM7000
736 select SYS_HAS_CPU_NEVADA
737 select SYS_SUPPORTS_64BIT_KERNEL
738 select SYS_SUPPORTS_BIG_ENDIAN
740 If you want this kernel to run on SGI O2 workstation, say Y here.
743 bool "Sibyte BCM91120C-CRhine"
746 select SIBYTE_BCM1120
748 select SYS_HAS_CPU_SB1
749 select SYS_SUPPORTS_BIG_ENDIAN
750 select SYS_SUPPORTS_LITTLE_ENDIAN
753 bool "Sibyte BCM91120x-Carmel"
756 select SIBYTE_BCM1120
758 select SYS_HAS_CPU_SB1
759 select SYS_SUPPORTS_BIG_ENDIAN
760 select SYS_SUPPORTS_LITTLE_ENDIAN
763 bool "Sibyte BCM91125C-CRhone"
766 select SIBYTE_BCM1125
768 select SYS_HAS_CPU_SB1
769 select SYS_SUPPORTS_BIG_ENDIAN
770 select SYS_SUPPORTS_HIGHMEM
771 select SYS_SUPPORTS_LITTLE_ENDIAN
774 bool "Sibyte BCM91125E-Rhone"
777 select SIBYTE_BCM1125H
779 select SYS_HAS_CPU_SB1
780 select SYS_SUPPORTS_BIG_ENDIAN
781 select SYS_SUPPORTS_LITTLE_ENDIAN
784 bool "Sibyte BCM91250A-SWARM"
787 select HAVE_PATA_PLATFORM
790 select SYS_HAS_CPU_SB1
791 select SYS_SUPPORTS_BIG_ENDIAN
792 select SYS_SUPPORTS_HIGHMEM
793 select SYS_SUPPORTS_LITTLE_ENDIAN
794 select ZONE_DMA32 if 64BIT
796 config SIBYTE_LITTLESUR
797 bool "Sibyte BCM91250C2-LittleSur"
800 select HAVE_PATA_PLATFORM
803 select SYS_HAS_CPU_SB1
804 select SYS_SUPPORTS_BIG_ENDIAN
805 select SYS_SUPPORTS_HIGHMEM
806 select SYS_SUPPORTS_LITTLE_ENDIAN
807 select ZONE_DMA32 if 64BIT
809 config SIBYTE_SENTOSA
810 bool "Sibyte BCM91250E-Sentosa"
815 select SYS_HAS_CPU_SB1
816 select SYS_SUPPORTS_BIG_ENDIAN
817 select SYS_SUPPORTS_LITTLE_ENDIAN
820 bool "Sibyte BCM91480B-BigSur"
823 select NR_CPUS_DEFAULT_4
824 select SIBYTE_BCM1x80
826 select SYS_HAS_CPU_SB1
827 select SYS_SUPPORTS_BIG_ENDIAN
828 select SYS_SUPPORTS_HIGHMEM
829 select SYS_SUPPORTS_LITTLE_ENDIAN
830 select ZONE_DMA32 if 64BIT
833 bool "SNI RM200/300/400"
834 select FW_ARC if CPU_LITTLE_ENDIAN
835 select FW_ARC32 if CPU_LITTLE_ENDIAN
836 select FW_SNIPROM if CPU_BIG_ENDIAN
837 select ARCH_MAY_HAVE_PC_FDC
841 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
842 select DMA_NONCOHERENT
843 select GENERIC_ISA_DMA
844 select HAVE_PCSPKR_PLATFORM
851 select MIPS_L1_CACHE_SHIFT_6
852 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
853 select SYS_HAS_CPU_R4X00
854 select SYS_HAS_CPU_R5000
855 select SYS_HAS_CPU_R10000
856 select R5000_CPU_SCACHE
857 select SYS_HAS_EARLY_PRINTK
858 select SYS_SUPPORTS_32BIT_KERNEL
859 select SYS_SUPPORTS_64BIT_KERNEL
860 select SYS_SUPPORTS_BIG_ENDIAN
861 select SYS_SUPPORTS_HIGHMEM
862 select SYS_SUPPORTS_LITTLE_ENDIAN
864 The SNI RM200/300/400 are MIPS-based machines manufactured by
865 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
866 Technology and now in turn merged with Fujitsu. Say Y here to
867 support this machine type.
870 bool "Toshiba TX39 series based machines"
873 bool "Toshiba TX49 series based machines"
875 config MIKROTIK_RB532
876 bool "Mikrotik RB532 boards"
879 select DMA_NONCOHERENT
882 select SYS_HAS_CPU_MIPS32_R1
883 select SYS_SUPPORTS_32BIT_KERNEL
884 select SYS_SUPPORTS_LITTLE_ENDIAN
888 select MIPS_L1_CACHE_SHIFT_4
890 Support the Mikrotik(tm) RouterBoard 532 series,
891 based on the IDT RC32434 SoC.
893 config CAVIUM_OCTEON_SOC
894 bool "Cavium Networks Octeon SoC based boards"
896 select ARCH_PHYS_ADDR_T_64BIT
898 select SYS_SUPPORTS_64BIT_KERNEL
899 select SYS_SUPPORTS_BIG_ENDIAN
901 select EDAC_ATOMIC_SCRUB
902 select SYS_SUPPORTS_LITTLE_ENDIAN
903 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
904 select SYS_HAS_EARLY_PRINTK
905 select SYS_HAS_CPU_CAVIUM_OCTEON
912 select ARCH_SPARSEMEM_ENABLE
913 select SYS_SUPPORTS_SMP
914 select NR_CPUS_DEFAULT_16
916 select MTD_COMPLEX_MAPPINGS
918 This option supports all of the Octeon reference boards from Cavium
919 Networks. It builds a kernel that dynamically determines the Octeon
920 CPU type and supports all known board reference implementations.
921 Some of the supported boards are:
928 Say Y here for most Octeon reference boards.
931 bool "Netlogic XLR/XLS based systems"
934 select SYS_HAS_CPU_XLR
935 select SYS_SUPPORTS_SMP
938 select SYS_SUPPORTS_32BIT_KERNEL
939 select SYS_SUPPORTS_64BIT_KERNEL
940 select ARCH_PHYS_ADDR_T_64BIT
941 select SYS_SUPPORTS_BIG_ENDIAN
942 select SYS_SUPPORTS_HIGHMEM
944 select NR_CPUS_DEFAULT_32
948 select ZONE_DMA32 if 64BIT
950 select SYS_HAS_EARLY_PRINTK
951 select SYS_SUPPORTS_ZBOOT
952 select SYS_SUPPORTS_ZBOOT_UART16550
954 Support for systems based on Netlogic XLR and XLS processors.
955 Say Y here if you have a XLR or XLS based board.
958 bool "Netlogic XLP based systems"
961 select SYS_HAS_CPU_XLP
962 select SYS_SUPPORTS_SMP
964 select SYS_SUPPORTS_32BIT_KERNEL
965 select SYS_SUPPORTS_64BIT_KERNEL
966 select ARCH_PHYS_ADDR_T_64BIT
968 select SYS_SUPPORTS_BIG_ENDIAN
969 select SYS_SUPPORTS_LITTLE_ENDIAN
970 select SYS_SUPPORTS_HIGHMEM
972 select NR_CPUS_DEFAULT_32
976 select ZONE_DMA32 if 64BIT
978 select SYS_HAS_EARLY_PRINTK
980 select SYS_SUPPORTS_ZBOOT
981 select SYS_SUPPORTS_ZBOOT_UART16550
983 This board is based on Netlogic XLP Processor.
984 Say Y here if you have a XLP based board.
987 bool "Para-Virtualized guest system"
991 select SYS_SUPPORTS_64BIT_KERNEL
992 select SYS_SUPPORTS_32BIT_KERNEL
993 select SYS_SUPPORTS_BIG_ENDIAN
994 select SYS_SUPPORTS_SMP
995 select NR_CPUS_DEFAULT_4
996 select SYS_HAS_EARLY_PRINTK
997 select SYS_HAS_CPU_MIPS32_R2
998 select SYS_HAS_CPU_MIPS64_R2
999 select SYS_HAS_CPU_CAVIUM_OCTEON
1001 select SWAP_IO_SPACE
1003 This option supports guest running under ????
1007 source "arch/mips/alchemy/Kconfig"
1008 source "arch/mips/ath25/Kconfig"
1009 source "arch/mips/ath79/Kconfig"
1010 source "arch/mips/bcm47xx/Kconfig"
1011 source "arch/mips/bcm63xx/Kconfig"
1012 source "arch/mips/bmips/Kconfig"
1013 source "arch/mips/generic/Kconfig"
1014 source "arch/mips/jazz/Kconfig"
1015 source "arch/mips/jz4740/Kconfig"
1016 source "arch/mips/lantiq/Kconfig"
1017 source "arch/mips/lasat/Kconfig"
1018 source "arch/mips/pic32/Kconfig"
1019 source "arch/mips/pistachio/Kconfig"
1020 source "arch/mips/pmcs-msp71xx/Kconfig"
1021 source "arch/mips/ralink/Kconfig"
1022 source "arch/mips/sgi-ip27/Kconfig"
1023 source "arch/mips/sibyte/Kconfig"
1024 source "arch/mips/txx9/Kconfig"
1025 source "arch/mips/vr41xx/Kconfig"
1026 source "arch/mips/cavium-octeon/Kconfig"
1027 source "arch/mips/loongson32/Kconfig"
1028 source "arch/mips/loongson64/Kconfig"
1029 source "arch/mips/netlogic/Kconfig"
1030 source "arch/mips/paravirt/Kconfig"
1031 source "arch/mips/xilfpga/Kconfig"
1035 config RWSEM_GENERIC_SPINLOCK
1039 config RWSEM_XCHGADD_ALGORITHM
1042 config ARCH_HAS_ILOG2_U32
1046 config ARCH_HAS_ILOG2_U64
1050 config GENERIC_HWEIGHT
1054 config GENERIC_CALIBRATE_DELAY
1058 config SCHED_OMIT_FRAME_POINTER
1063 # Select some configuration options automatically based on user selections.
1068 config ARCH_MAY_HAVE_PC_FDC
1104 config MIPS_CLOCK_VSYSCALL
1105 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1114 config ARCH_DMA_ADDR_T_64BIT
1115 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1117 config ARCH_SUPPORTS_UPROBES
1120 config DMA_MAYBE_COHERENT
1121 select DMA_NONCOHERENT
1124 config DMA_PERDEV_COHERENT
1126 select DMA_MAYBE_COHERENT
1131 config DMA_NONCOHERENT
1133 select NEED_DMA_MAP_STATE
1135 config NEED_DMA_MAP_STATE
1138 config SYS_HAS_EARLY_PRINTK
1141 config SYS_SUPPORTS_HOTPLUG_CPU
1144 config MIPS_BONITO64
1159 config NO_IOPORT_MAP
1165 config GENERIC_ISA_DMA
1167 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1170 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1172 select GENERIC_ISA_DMA
1177 config HOLES_IN_ZONE
1180 config SYS_SUPPORTS_RELOCATABLE
1183 Selected if the platform supports relocating the kernel.
1184 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1185 to allow access to command line and entropy sources.
1188 # Endianness selection. Sufficiently obscure so many users don't know what to
1189 # answer,so we try hard to limit the available choices. Also the use of a
1190 # choice statement should be more obvious to the user.
1193 prompt "Endianness selection"
1195 Some MIPS machines can be configured for either little or big endian
1196 byte order. These modes require different kernels and a different
1197 Linux distribution. In general there is one preferred byteorder for a
1198 particular system but some systems are just as commonly used in the
1199 one or the other endianness.
1201 config CPU_BIG_ENDIAN
1203 depends on SYS_SUPPORTS_BIG_ENDIAN
1205 config CPU_LITTLE_ENDIAN
1206 bool "Little endian"
1207 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1214 config SYS_SUPPORTS_APM_EMULATION
1217 config SYS_SUPPORTS_BIG_ENDIAN
1220 config SYS_SUPPORTS_LITTLE_ENDIAN
1223 config SYS_SUPPORTS_HUGETLBFS
1225 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1228 config MIPS_HUGE_TLB_SUPPORT
1229 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1246 config PCI_GT64XXX_PCI0
1249 config NO_EXCEPT_FILL
1256 select DMA_NONCOHERENT
1258 select SWAP_IO_SPACE
1259 select SYS_HAS_CPU_R5500
1260 select SYS_SUPPORTS_32BIT_KERNEL
1261 select SYS_SUPPORTS_64BIT_KERNEL
1262 select SYS_SUPPORTS_BIG_ENDIAN
1269 select DMA_NONCOHERENT
1270 select SYS_HAS_CPU_MIPS32_R2
1271 select SYS_SUPPORTS_32BIT_KERNEL
1272 select SYS_SUPPORTS_LITTLE_ENDIAN
1273 select SYS_SUPPORTS_BIG_ENDIAN
1274 select SYS_SUPPORTS_MIPS16
1275 select CPU_MIPSR2_IRQ_VI
1284 config SWAP_IO_SPACE
1287 config SGI_HAS_INDYDOG
1299 config SGI_HAS_ZILOG
1302 config SGI_HAS_I8042
1305 config DEFAULT_SGI_PARTITION
1317 config MIPS_L1_CACHE_SHIFT_4
1320 config MIPS_L1_CACHE_SHIFT_5
1323 config MIPS_L1_CACHE_SHIFT_6
1326 config MIPS_L1_CACHE_SHIFT_7
1329 config MIPS_L1_CACHE_SHIFT
1331 default "7" if MIPS_L1_CACHE_SHIFT_7
1332 default "6" if MIPS_L1_CACHE_SHIFT_6
1333 default "5" if MIPS_L1_CACHE_SHIFT_5
1334 default "4" if MIPS_L1_CACHE_SHIFT_4
1337 config HAVE_STD_PC_SERIAL_PORT
1341 bool "ARC console support"
1342 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1346 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1351 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1360 menu "CPU selection"
1366 config CPU_LOONGSON3
1367 bool "Loongson 3 CPU"
1368 depends on SYS_HAS_CPU_LOONGSON3
1369 select CPU_SUPPORTS_64BIT_KERNEL
1370 select CPU_SUPPORTS_HIGHMEM
1371 select CPU_SUPPORTS_HUGEPAGES
1372 select WEAK_ORDERING
1373 select WEAK_REORDERING_BEYOND_LLSC
1374 select MIPS_PGD_C0_CONTEXT
1375 select MIPS_L1_CACHE_SHIFT_6
1378 The Loongson 3 processor implements the MIPS64R2 instruction
1379 set with many extensions.
1381 config LOONGSON3_ENHANCEMENT
1382 bool "New Loongson 3 CPU Enhancements"
1385 select CPU_HAS_PREFETCH
1386 depends on CPU_LOONGSON3
1388 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1389 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1390 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1391 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1392 Fast TLB refill support, etc.
1394 This option enable those enhancements which are not probed at run
1395 time. If you want a generic kernel to run on all Loongson 3 machines,
1396 please say 'N' here. If you want a high-performance kernel to run on
1397 new Loongson 3 machines only, please say 'Y' here.
1399 config CPU_LOONGSON2E
1401 depends on SYS_HAS_CPU_LOONGSON2E
1402 select CPU_LOONGSON2
1404 The Loongson 2E processor implements the MIPS III instruction set
1405 with many extensions.
1407 It has an internal FPGA northbridge, which is compatible to
1410 config CPU_LOONGSON2F
1412 depends on SYS_HAS_CPU_LOONGSON2F
1413 select CPU_LOONGSON2
1416 The Loongson 2F processor implements the MIPS III instruction set
1417 with many extensions.
1419 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1420 have a similar programming interface with FPGA northbridge used in
1423 config CPU_LOONGSON1B
1425 depends on SYS_HAS_CPU_LOONGSON1B
1426 select CPU_LOONGSON1
1427 select LEDS_GPIO_REGISTER
1429 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1430 release 2 instruction set.
1432 config CPU_LOONGSON1C
1434 depends on SYS_HAS_CPU_LOONGSON1C
1435 select CPU_LOONGSON1
1436 select ARCH_WANT_OPTIONAL_GPIOLIB
1437 select LEDS_GPIO_REGISTER
1439 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1440 release 2 instruction set.
1442 config CPU_MIPS32_R1
1443 bool "MIPS32 Release 1"
1444 depends on SYS_HAS_CPU_MIPS32_R1
1445 select CPU_HAS_PREFETCH
1446 select CPU_SUPPORTS_32BIT_KERNEL
1447 select CPU_SUPPORTS_HIGHMEM
1449 Choose this option to build a kernel for release 1 or later of the
1450 MIPS32 architecture. Most modern embedded systems with a 32-bit
1451 MIPS processor are based on a MIPS32 processor. If you know the
1452 specific type of processor in your system, choose those that one
1453 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1454 Release 2 of the MIPS32 architecture is available since several
1455 years so chances are you even have a MIPS32 Release 2 processor
1456 in which case you should choose CPU_MIPS32_R2 instead for better
1459 config CPU_MIPS32_R2
1460 bool "MIPS32 Release 2"
1461 depends on SYS_HAS_CPU_MIPS32_R2
1462 select CPU_HAS_PREFETCH
1463 select CPU_SUPPORTS_32BIT_KERNEL
1464 select CPU_SUPPORTS_HIGHMEM
1465 select CPU_SUPPORTS_MSA
1468 Choose this option to build a kernel for release 2 or later of the
1469 MIPS32 architecture. Most modern embedded systems with a 32-bit
1470 MIPS processor are based on a MIPS32 processor. If you know the
1471 specific type of processor in your system, choose those that one
1472 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1474 config CPU_MIPS32_R6
1475 bool "MIPS32 Release 6"
1476 depends on SYS_HAS_CPU_MIPS32_R6
1477 select CPU_HAS_PREFETCH
1478 select CPU_SUPPORTS_32BIT_KERNEL
1479 select CPU_SUPPORTS_HIGHMEM
1480 select CPU_SUPPORTS_MSA
1483 select MIPS_O32_FP64_SUPPORT
1485 Choose this option to build a kernel for release 6 or later of the
1486 MIPS32 architecture. New MIPS processors, starting with the Warrior
1487 family, are based on a MIPS32r6 processor. If you own an older
1488 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1490 config CPU_MIPS64_R1
1491 bool "MIPS64 Release 1"
1492 depends on SYS_HAS_CPU_MIPS64_R1
1493 select CPU_HAS_PREFETCH
1494 select CPU_SUPPORTS_32BIT_KERNEL
1495 select CPU_SUPPORTS_64BIT_KERNEL
1496 select CPU_SUPPORTS_HIGHMEM
1497 select CPU_SUPPORTS_HUGEPAGES
1499 Choose this option to build a kernel for release 1 or later of the
1500 MIPS64 architecture. Many modern embedded systems with a 64-bit
1501 MIPS processor are based on a MIPS64 processor. If you know the
1502 specific type of processor in your system, choose those that one
1503 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1504 Release 2 of the MIPS64 architecture is available since several
1505 years so chances are you even have a MIPS64 Release 2 processor
1506 in which case you should choose CPU_MIPS64_R2 instead for better
1509 config CPU_MIPS64_R2
1510 bool "MIPS64 Release 2"
1511 depends on SYS_HAS_CPU_MIPS64_R2
1512 select CPU_HAS_PREFETCH
1513 select CPU_SUPPORTS_32BIT_KERNEL
1514 select CPU_SUPPORTS_64BIT_KERNEL
1515 select CPU_SUPPORTS_HIGHMEM
1516 select CPU_SUPPORTS_HUGEPAGES
1517 select CPU_SUPPORTS_MSA
1520 Choose this option to build a kernel for release 2 or later of the
1521 MIPS64 architecture. Many modern embedded systems with a 64-bit
1522 MIPS processor are based on a MIPS64 processor. If you know the
1523 specific type of processor in your system, choose those that one
1524 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1526 config CPU_MIPS64_R6
1527 bool "MIPS64 Release 6"
1528 depends on SYS_HAS_CPU_MIPS64_R6
1529 select CPU_HAS_PREFETCH
1530 select CPU_SUPPORTS_32BIT_KERNEL
1531 select CPU_SUPPORTS_64BIT_KERNEL
1532 select CPU_SUPPORTS_HIGHMEM
1533 select CPU_SUPPORTS_MSA
1535 select MIPS_O32_FP64_SUPPORT if 32BIT || MIPS32_O32
1538 Choose this option to build a kernel for release 6 or later of the
1539 MIPS64 architecture. New MIPS processors, starting with the Warrior
1540 family, are based on a MIPS64r6 processor. If you own an older
1541 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1545 depends on SYS_HAS_CPU_R3000
1547 select CPU_SUPPORTS_32BIT_KERNEL
1548 select CPU_SUPPORTS_HIGHMEM
1550 Please make sure to pick the right CPU type. Linux/MIPS is not
1551 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1552 *not* work on R4000 machines and vice versa. However, since most
1553 of the supported machines have an R4000 (or similar) CPU, R4x00
1554 might be a safe bet. If the resulting kernel does not work,
1555 try to recompile with R3000.
1559 depends on SYS_HAS_CPU_TX39XX
1560 select CPU_SUPPORTS_32BIT_KERNEL
1564 depends on SYS_HAS_CPU_VR41XX
1565 select CPU_SUPPORTS_32BIT_KERNEL
1566 select CPU_SUPPORTS_64BIT_KERNEL
1568 The options selects support for the NEC VR4100 series of processors.
1569 Only choose this option if you have one of these processors as a
1570 kernel built with this option will not run on any other type of
1571 processor or vice versa.
1575 depends on SYS_HAS_CPU_R4300
1576 select CPU_SUPPORTS_32BIT_KERNEL
1577 select CPU_SUPPORTS_64BIT_KERNEL
1579 MIPS Technologies R4300-series processors.
1583 depends on SYS_HAS_CPU_R4X00
1584 select CPU_SUPPORTS_32BIT_KERNEL
1585 select CPU_SUPPORTS_64BIT_KERNEL
1586 select CPU_SUPPORTS_HUGEPAGES
1588 MIPS Technologies R4000-series processors other than 4300, including
1589 the R4000, R4400, R4600, and 4700.
1593 depends on SYS_HAS_CPU_TX49XX
1594 select CPU_HAS_PREFETCH
1595 select CPU_SUPPORTS_32BIT_KERNEL
1596 select CPU_SUPPORTS_64BIT_KERNEL
1597 select CPU_SUPPORTS_HUGEPAGES
1601 depends on SYS_HAS_CPU_R5000
1602 select CPU_SUPPORTS_32BIT_KERNEL
1603 select CPU_SUPPORTS_64BIT_KERNEL
1604 select CPU_SUPPORTS_HUGEPAGES
1606 MIPS Technologies R5000-series processors other than the Nevada.
1610 depends on SYS_HAS_CPU_R5432
1611 select CPU_SUPPORTS_32BIT_KERNEL
1612 select CPU_SUPPORTS_64BIT_KERNEL
1613 select CPU_SUPPORTS_HUGEPAGES
1617 depends on SYS_HAS_CPU_R5500
1618 select CPU_SUPPORTS_32BIT_KERNEL
1619 select CPU_SUPPORTS_64BIT_KERNEL
1620 select CPU_SUPPORTS_HUGEPAGES
1622 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1627 depends on SYS_HAS_CPU_R6000
1628 select CPU_SUPPORTS_32BIT_KERNEL
1630 MIPS Technologies R6000 and R6000A series processors. Note these
1631 processors are extremely rare and the support for them is incomplete.
1635 depends on SYS_HAS_CPU_NEVADA
1636 select CPU_SUPPORTS_32BIT_KERNEL
1637 select CPU_SUPPORTS_64BIT_KERNEL
1638 select CPU_SUPPORTS_HUGEPAGES
1640 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1644 depends on SYS_HAS_CPU_R8000
1645 select CPU_HAS_PREFETCH
1646 select CPU_SUPPORTS_64BIT_KERNEL
1648 MIPS Technologies R8000 processors. Note these processors are
1649 uncommon and the support for them is incomplete.
1653 depends on SYS_HAS_CPU_R10000
1654 select CPU_HAS_PREFETCH
1655 select CPU_SUPPORTS_32BIT_KERNEL
1656 select CPU_SUPPORTS_64BIT_KERNEL
1657 select CPU_SUPPORTS_HIGHMEM
1658 select CPU_SUPPORTS_HUGEPAGES
1660 MIPS Technologies R10000-series processors.
1664 depends on SYS_HAS_CPU_RM7000
1665 select CPU_HAS_PREFETCH
1666 select CPU_SUPPORTS_32BIT_KERNEL
1667 select CPU_SUPPORTS_64BIT_KERNEL
1668 select CPU_SUPPORTS_HIGHMEM
1669 select CPU_SUPPORTS_HUGEPAGES
1673 depends on SYS_HAS_CPU_SB1
1674 select CPU_SUPPORTS_32BIT_KERNEL
1675 select CPU_SUPPORTS_64BIT_KERNEL
1676 select CPU_SUPPORTS_HIGHMEM
1677 select CPU_SUPPORTS_HUGEPAGES
1678 select WEAK_ORDERING
1680 config CPU_CAVIUM_OCTEON
1681 bool "Cavium Octeon processor"
1682 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1683 select CPU_HAS_PREFETCH
1684 select CPU_SUPPORTS_64BIT_KERNEL
1685 select WEAK_ORDERING
1686 select CPU_SUPPORTS_HIGHMEM
1687 select CPU_SUPPORTS_HUGEPAGES
1688 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1689 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1690 select MIPS_L1_CACHE_SHIFT_7
1692 The Cavium Octeon processor is a highly integrated chip containing
1693 many ethernet hardware widgets for networking tasks. The processor
1694 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1695 Full details can be found at http://www.caviumnetworks.com.
1698 bool "Broadcom BMIPS"
1699 depends on SYS_HAS_CPU_BMIPS
1701 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1702 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1703 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1704 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1705 select CPU_SUPPORTS_32BIT_KERNEL
1706 select DMA_NONCOHERENT
1708 select SWAP_IO_SPACE
1709 select WEAK_ORDERING
1710 select CPU_SUPPORTS_HIGHMEM
1711 select CPU_HAS_PREFETCH
1713 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1716 bool "Netlogic XLR SoC"
1717 depends on SYS_HAS_CPU_XLR
1718 select CPU_SUPPORTS_32BIT_KERNEL
1719 select CPU_SUPPORTS_64BIT_KERNEL
1720 select CPU_SUPPORTS_HIGHMEM
1721 select CPU_SUPPORTS_HUGEPAGES
1722 select WEAK_ORDERING
1723 select WEAK_REORDERING_BEYOND_LLSC
1725 Netlogic Microsystems XLR/XLS processors.
1728 bool "Netlogic XLP SoC"
1729 depends on SYS_HAS_CPU_XLP
1730 select CPU_SUPPORTS_32BIT_KERNEL
1731 select CPU_SUPPORTS_64BIT_KERNEL
1732 select CPU_SUPPORTS_HIGHMEM
1733 select WEAK_ORDERING
1734 select WEAK_REORDERING_BEYOND_LLSC
1735 select CPU_HAS_PREFETCH
1737 select CPU_SUPPORTS_HUGEPAGES
1738 select MIPS_ASID_BITS_VARIABLE
1740 Netlogic Microsystems XLP processors.
1743 config CPU_MIPS32_3_5_FEATURES
1744 bool "MIPS32 Release 3.5 Features"
1745 depends on SYS_HAS_CPU_MIPS32_R3_5
1746 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1748 Choose this option to build a kernel for release 2 or later of the
1749 MIPS32 architecture including features from the 3.5 release such as
1750 support for Enhanced Virtual Addressing (EVA).
1752 config CPU_MIPS32_3_5_EVA
1753 bool "Enhanced Virtual Addressing (EVA)"
1754 depends on CPU_MIPS32_3_5_FEATURES
1758 Choose this option if you want to enable the Enhanced Virtual
1759 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1760 One of its primary benefits is an increase in the maximum size
1761 of lowmem (up to 3GB). If unsure, say 'N' here.
1763 config CPU_MIPS32_R5_FEATURES
1764 bool "MIPS32 Release 5 Features"
1765 depends on SYS_HAS_CPU_MIPS32_R5
1766 depends on CPU_MIPS32_R2
1768 Choose this option to build a kernel for release 2 or later of the
1769 MIPS32 architecture including features from release 5 such as
1770 support for Extended Physical Addressing (XPA).
1772 config CPU_MIPS32_R5_XPA
1773 bool "Extended Physical Addressing (XPA)"
1774 depends on CPU_MIPS32_R5_FEATURES
1776 depends on !PAGE_SIZE_4KB
1777 depends on SYS_SUPPORTS_HIGHMEM
1780 select ARCH_PHYS_ADDR_T_64BIT
1783 Choose this option if you want to enable the Extended Physical
1784 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1785 benefit is to increase physical addressing equal to or greater
1786 than 40 bits. Note that this has the side effect of turning on
1787 64-bit addressing which in turn makes the PTEs 64-bit in size.
1788 If unsure, say 'N' here.
1791 config CPU_NOP_WORKAROUNDS
1794 config CPU_JUMP_WORKAROUNDS
1797 config CPU_LOONGSON2F_WORKAROUNDS
1798 bool "Loongson 2F Workarounds"
1800 select CPU_NOP_WORKAROUNDS
1801 select CPU_JUMP_WORKAROUNDS
1803 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1804 require workarounds. Without workarounds the system may hang
1805 unexpectedly. For more information please refer to the gas
1806 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1808 Loongson 2F03 and later have fixed these issues and no workarounds
1809 are needed. The workarounds have no significant side effect on them
1810 but may decrease the performance of the system so this option should
1811 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1814 If unsure, please say Y.
1815 endif # CPU_LOONGSON2F
1817 config SYS_SUPPORTS_ZBOOT
1819 select HAVE_KERNEL_GZIP
1820 select HAVE_KERNEL_BZIP2
1821 select HAVE_KERNEL_LZ4
1822 select HAVE_KERNEL_LZMA
1823 select HAVE_KERNEL_LZO
1824 select HAVE_KERNEL_XZ
1826 config SYS_SUPPORTS_ZBOOT_UART16550
1828 select SYS_SUPPORTS_ZBOOT
1830 config SYS_SUPPORTS_ZBOOT_UART_PROM
1832 select SYS_SUPPORTS_ZBOOT
1834 config CPU_LOONGSON2
1836 select CPU_SUPPORTS_32BIT_KERNEL
1837 select CPU_SUPPORTS_64BIT_KERNEL
1838 select CPU_SUPPORTS_HIGHMEM
1839 select CPU_SUPPORTS_HUGEPAGES
1841 config CPU_LOONGSON1
1845 select CPU_HAS_PREFETCH
1846 select CPU_SUPPORTS_32BIT_KERNEL
1847 select CPU_SUPPORTS_HIGHMEM
1848 select CPU_SUPPORTS_CPUFREQ
1850 config CPU_BMIPS32_3300
1851 select SMP_UP if SMP
1854 config CPU_BMIPS4350
1856 select SYS_SUPPORTS_SMP
1857 select SYS_SUPPORTS_HOTPLUG_CPU
1859 config CPU_BMIPS4380
1861 select MIPS_L1_CACHE_SHIFT_6
1862 select SYS_SUPPORTS_SMP
1863 select SYS_SUPPORTS_HOTPLUG_CPU
1866 config CPU_BMIPS5000
1868 select MIPS_CPU_SCACHE
1869 select MIPS_L1_CACHE_SHIFT_7
1870 select SYS_SUPPORTS_SMP
1871 select SYS_SUPPORTS_HOTPLUG_CPU
1874 config SYS_HAS_CPU_LOONGSON3
1876 select CPU_SUPPORTS_CPUFREQ
1879 config SYS_HAS_CPU_LOONGSON2E
1882 config SYS_HAS_CPU_LOONGSON2F
1884 select CPU_SUPPORTS_CPUFREQ
1885 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1886 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1888 config SYS_HAS_CPU_LOONGSON1B
1891 config SYS_HAS_CPU_LOONGSON1C
1894 config SYS_HAS_CPU_MIPS32_R1
1897 config SYS_HAS_CPU_MIPS32_R2
1900 config SYS_HAS_CPU_MIPS32_R3_5
1903 config SYS_HAS_CPU_MIPS32_R5
1906 config SYS_HAS_CPU_MIPS32_R6
1909 config SYS_HAS_CPU_MIPS64_R1
1912 config SYS_HAS_CPU_MIPS64_R2
1915 config SYS_HAS_CPU_MIPS64_R6
1918 config SYS_HAS_CPU_R3000
1921 config SYS_HAS_CPU_TX39XX
1924 config SYS_HAS_CPU_VR41XX
1927 config SYS_HAS_CPU_R4300
1930 config SYS_HAS_CPU_R4X00
1933 config SYS_HAS_CPU_TX49XX
1936 config SYS_HAS_CPU_R5000
1939 config SYS_HAS_CPU_R5432
1942 config SYS_HAS_CPU_R5500
1945 config SYS_HAS_CPU_R6000
1948 config SYS_HAS_CPU_NEVADA
1951 config SYS_HAS_CPU_R8000
1954 config SYS_HAS_CPU_R10000
1957 config SYS_HAS_CPU_RM7000
1960 config SYS_HAS_CPU_SB1
1963 config SYS_HAS_CPU_CAVIUM_OCTEON
1966 config SYS_HAS_CPU_BMIPS
1969 config SYS_HAS_CPU_BMIPS32_3300
1971 select SYS_HAS_CPU_BMIPS
1973 config SYS_HAS_CPU_BMIPS4350
1975 select SYS_HAS_CPU_BMIPS
1977 config SYS_HAS_CPU_BMIPS4380
1979 select SYS_HAS_CPU_BMIPS
1981 config SYS_HAS_CPU_BMIPS5000
1983 select SYS_HAS_CPU_BMIPS
1985 config SYS_HAS_CPU_XLR
1988 config SYS_HAS_CPU_XLP
1991 config MIPS_MALTA_PM
1992 depends on MIPS_MALTA
1998 # CPU may reorder R->R, R->W, W->R, W->W
1999 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
2001 config WEAK_ORDERING
2005 # CPU may reorder reads and writes beyond LL/SC
2006 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
2008 config WEAK_REORDERING_BEYOND_LLSC
2013 # These two indicate any level of the MIPS32 and MIPS64 architecture
2017 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
2021 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2024 # These two indicate the revision of the architecture, either Release 1 or Release 2
2028 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2032 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2038 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2040 select HAVE_ARCH_BITREVERSE
2041 select MIPS_ASID_BITS_VARIABLE
2050 config SYS_SUPPORTS_32BIT_KERNEL
2052 config SYS_SUPPORTS_64BIT_KERNEL
2054 config CPU_SUPPORTS_32BIT_KERNEL
2056 config CPU_SUPPORTS_64BIT_KERNEL
2058 config CPU_SUPPORTS_CPUFREQ
2060 config CPU_SUPPORTS_ADDRWINCFG
2062 config CPU_SUPPORTS_HUGEPAGES
2064 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2066 config MIPS_PGD_C0_CONTEXT
2068 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
2071 # Set to y for ptrace access to watch registers.
2073 config HARDWARE_WATCHPOINTS
2075 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2080 prompt "Kernel code model"
2082 You should only select this option if you have a workload that
2083 actually benefits from 64-bit processing or if your machine has
2084 large memory. You will only be presented a single option in this
2085 menu if your system does not support both 32-bit and 64-bit kernels.
2088 bool "32-bit kernel"
2089 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2092 Select this option if you want to build a 32-bit kernel.
2095 bool "64-bit kernel"
2096 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2098 Select this option if you want to build a 64-bit kernel.
2103 bool "KVM Guest Kernel"
2104 depends on BROKEN_ON_SMP
2106 Select this option if building a guest kernel for KVM (Trap & Emulate)
2109 config KVM_GUEST_TIMER_FREQ
2110 int "Count/Compare Timer Frequency (MHz)"
2111 depends on KVM_GUEST
2114 Set this to non-zero if building a guest kernel for KVM to skip RTC
2115 emulation when determining guest CPU Frequency. Instead, the guest's
2116 timer frequency is specified directly.
2118 config MIPS_VA_BITS_48
2119 bool "48 bits virtual memory"
2122 Support a maximum at least 48 bits of application virtual memory.
2123 Default is 40 bits or less, depending on the CPU.
2124 This option result in a small memory overhead for page tables.
2125 This option is only supported with 16k and 64k page sizes.
2129 prompt "Kernel page size"
2130 default PAGE_SIZE_4KB
2132 config PAGE_SIZE_4KB
2134 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2135 depends on !MIPS_VA_BITS_48
2137 This option select the standard 4kB Linux page size. On some
2138 R3000-family processors this is the only available page size. Using
2139 4kB page size will minimize memory consumption and is therefore
2140 recommended for low memory systems.
2142 config PAGE_SIZE_8KB
2144 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2145 depends on !MIPS_VA_BITS_48
2147 Using 8kB page size will result in higher performance kernel at
2148 the price of higher memory consumption. This option is available
2149 only on R8000 and cnMIPS processors. Note that you will need a
2150 suitable Linux distribution to support this.
2152 config PAGE_SIZE_16KB
2154 depends on !CPU_R3000 && !CPU_TX39XX
2156 Using 16kB page size will result in higher performance kernel at
2157 the price of higher memory consumption. This option is available on
2158 all non-R3000 family processors. Note that you will need a suitable
2159 Linux distribution to support this.
2161 config PAGE_SIZE_32KB
2163 depends on CPU_CAVIUM_OCTEON
2164 depends on !MIPS_VA_BITS_48
2166 Using 32kB page size will result in higher performance kernel at
2167 the price of higher memory consumption. This option is available
2168 only on cnMIPS cores. Note that you will need a suitable Linux
2169 distribution to support this.
2171 config PAGE_SIZE_64KB
2173 depends on !CPU_R3000 && !CPU_TX39XX && !CPU_R6000
2175 Using 64kB page size will result in higher performance kernel at
2176 the price of higher memory consumption. This option is available on
2177 all non-R3000 family processor. Not that at the time of this
2178 writing this option is still high experimental.
2182 config FORCE_MAX_ZONEORDER
2183 int "Maximum zone order"
2184 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2185 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2186 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2187 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2188 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2189 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2193 The kernel memory allocator divides physically contiguous memory
2194 blocks into "zones", where each zone is a power of two number of
2195 pages. This option selects the largest power of two that the kernel
2196 keeps in the memory allocator. If you need to allocate very large
2197 blocks of physically contiguous memory, then you may need to
2198 increase this value.
2200 This config option is actually maximum order plus one. For example,
2201 a value of 11 means that the largest free memory block is 2^10 pages.
2203 The page size is not necessarily 4KB. Keep this in mind
2204 when choosing a value for this option.
2209 config IP22_CPU_SCACHE
2214 # Support for a MIPS32 / MIPS64 style S-caches
2216 config MIPS_CPU_SCACHE
2220 config R5000_CPU_SCACHE
2224 config RM7000_CPU_SCACHE
2228 config SIBYTE_DMA_PAGEOPS
2229 bool "Use DMA to clear/copy pages"
2232 Instead of using the CPU to zero and copy pages, use a Data Mover
2233 channel. These DMA channels are otherwise unused by the standard
2234 SiByte Linux port. Seems to give a small performance benefit.
2236 config CPU_HAS_PREFETCH
2239 config CPU_GENERIC_DUMP_TLB
2241 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2245 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2247 config CPU_R4K_CACHE_TLB
2249 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2252 bool "MIPS MT SMP support (1 TC on each available VPE)"
2253 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2254 select CPU_MIPSR2_IRQ_VI
2255 select CPU_MIPSR2_IRQ_EI
2260 select SYS_SUPPORTS_SMP
2261 select SYS_SUPPORTS_SCHED_SMT
2262 select MIPS_PERF_SHARED_TC_COUNTERS
2264 This is a kernel model which is known as SMVP. This is supported
2265 on cores with the MT ASE and uses the available VPEs to implement
2266 virtual processors which supports SMP. This is equivalent to the
2267 Intel Hyperthreading feature. For further information go to
2268 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2274 bool "SMT (multithreading) scheduler support"
2275 depends on SYS_SUPPORTS_SCHED_SMT
2278 SMT scheduler support improves the CPU scheduler's decision making
2279 when dealing with MIPS MT enabled cores at a cost of slightly
2280 increased overhead in some places. If unsure say N here.
2282 config SYS_SUPPORTS_SCHED_SMT
2285 config SYS_SUPPORTS_MULTITHREADING
2288 config MIPS_MT_FPAFF
2289 bool "Dynamic FPU affinity for FP-intensive threads"
2291 depends on MIPS_MT_SMP
2293 config MIPSR2_TO_R6_EMULATOR
2294 bool "MIPS R2-to-R6 emulator"
2295 depends on CPU_MIPSR6 && !SMP
2298 Choose this option if you want to run non-R6 MIPS userland code.
2299 Even if you say 'Y' here, the emulator will still be disabled by
2300 default. You can enable it using the 'mipsr2emu' kernel option.
2301 The only reason this is a build-time option is to save ~14K from the
2303 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2304 depends on SMP && CPU_MIPSR6
2306 config MIPS_VPE_LOADER
2307 bool "VPE loader support."
2308 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2309 select CPU_MIPSR2_IRQ_VI
2310 select CPU_MIPSR2_IRQ_EI
2313 Includes a loader for loading an elf relocatable object
2314 onto another VPE and running it.
2316 config MIPS_VPE_LOADER_CMP
2319 depends on MIPS_VPE_LOADER && MIPS_CMP
2321 config MIPS_VPE_LOADER_MT
2324 depends on MIPS_VPE_LOADER && !MIPS_CMP
2326 config MIPS_VPE_LOADER_TOM
2327 bool "Load VPE program into memory hidden from linux"
2328 depends on MIPS_VPE_LOADER
2331 The loader can use memory that is present but has been hidden from
2332 Linux using the kernel command line option "mem=xxMB". It's up to
2333 you to ensure the amount you put in the option and the space your
2334 program requires is less or equal to the amount physically present.
2336 config MIPS_VPE_APSP_API
2337 bool "Enable support for AP/SP API (RTLX)"
2338 depends on MIPS_VPE_LOADER
2341 config MIPS_VPE_APSP_API_CMP
2344 depends on MIPS_VPE_APSP_API && MIPS_CMP
2346 config MIPS_VPE_APSP_API_MT
2349 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2352 bool "MIPS CMP framework support (DEPRECATED)"
2353 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2356 select SYS_SUPPORTS_SMP
2357 select WEAK_ORDERING
2360 Select this if you are using a bootloader which implements the "CMP
2361 framework" protocol (ie. YAMON) and want your kernel to make use of
2362 its ability to start secondary CPUs.
2364 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2368 bool "MIPS Coherent Processing System support"
2369 depends on SYS_SUPPORTS_MIPS_CPS
2372 select MIPS_CPS_PM if HOTPLUG_CPU
2374 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2375 select SYS_SUPPORTS_HOTPLUG_CPU
2376 select SYS_SUPPORTS_SMP
2377 select WEAK_ORDERING
2379 Select this if you wish to run an SMP kernel across multiple cores
2380 within a MIPS Coherent Processing System. When this option is
2381 enabled the kernel will probe for other cores and boot them with
2382 no external assistance. It is safe to enable this when hardware
2383 support is unavailable.
2396 config SB1_PASS_2_WORKAROUNDS
2398 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2401 config SB1_PASS_2_1_WORKAROUNDS
2403 depends on CPU_SB1 && CPU_SB1_PASS_2
2407 config ARCH_PHYS_ADDR_T_64BIT
2411 prompt "SmartMIPS or microMIPS ASE support"
2413 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2416 Select this if you want neither microMIPS nor SmartMIPS support
2418 config CPU_HAS_SMARTMIPS
2419 depends on SYS_SUPPORTS_SMARTMIPS
2422 SmartMIPS is a extension of the MIPS32 architecture aimed at
2423 increased security at both hardware and software level for
2424 smartcards. Enabling this option will allow proper use of the
2425 SmartMIPS instructions by Linux applications. However a kernel with
2426 this option will not work on a MIPS core without SmartMIPS core. If
2427 you don't know you probably don't have SmartMIPS and should say N
2430 config CPU_MICROMIPS
2431 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2434 When this option is enabled the kernel will be built using the
2440 bool "Support for the MIPS SIMD Architecture"
2441 depends on CPU_SUPPORTS_MSA
2442 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2444 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2445 and a set of SIMD instructions to operate on them. When this option
2446 is enabled the kernel will support allocating & switching MSA
2447 vector register contexts. If you know that your kernel will only be
2448 running on CPUs which do not support MSA or that your userland will
2449 not be making use of it then you may wish to say N here to reduce
2450 the size & complexity of your kernel.
2464 # Vectored interrupt mode is an R2 feature
2466 config CPU_MIPSR2_IRQ_VI
2470 # Extended interrupt mode is an R2 feature
2472 config CPU_MIPSR2_IRQ_EI
2477 depends on !CPU_R3000
2483 config CPU_DADDI_WORKAROUNDS
2486 config CPU_R4000_WORKAROUNDS
2488 select CPU_R4400_WORKAROUNDS
2490 config CPU_R4400_WORKAROUNDS
2493 config MIPS_ASID_SHIFT
2495 default 6 if CPU_R3000 || CPU_TX39XX
2496 default 4 if CPU_R8000
2499 config MIPS_ASID_BITS
2501 default 0 if MIPS_ASID_BITS_VARIABLE
2502 default 6 if CPU_R3000 || CPU_TX39XX
2505 config MIPS_ASID_BITS_VARIABLE
2509 # - Highmem only makes sense for the 32-bit kernel.
2510 # - The current highmem code will only work properly on physically indexed
2511 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2512 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2513 # moment we protect the user and offer the highmem option only on machines
2514 # where it's known to be safe. This will not offer highmem on a few systems
2515 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2516 # indexed CPUs but we're playing safe.
2517 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2518 # know they might have memory configurations that could make use of highmem
2522 bool "High Memory Support"
2523 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2525 config CPU_SUPPORTS_HIGHMEM
2528 config SYS_SUPPORTS_HIGHMEM
2531 config SYS_SUPPORTS_SMARTMIPS
2534 config SYS_SUPPORTS_MICROMIPS
2537 config SYS_SUPPORTS_MIPS16
2540 This option must be set if a kernel might be executed on a MIPS16-
2541 enabled CPU even if MIPS16 is not actually being used. In other
2542 words, it makes the kernel MIPS16-tolerant.
2544 config CPU_SUPPORTS_MSA
2547 config ARCH_FLATMEM_ENABLE
2549 depends on !NUMA && !CPU_LOONGSON2
2551 config ARCH_DISCONTIGMEM_ENABLE
2553 default y if SGI_IP27
2555 Say Y to support efficient handling of discontiguous physical memory,
2556 for architectures which are either NUMA (Non-Uniform Memory Access)
2557 or have huge holes in the physical address space for other reasons.
2558 See <file:Documentation/vm/numa> for more.
2560 config ARCH_SPARSEMEM_ENABLE
2562 select SPARSEMEM_STATIC
2566 depends on SYS_SUPPORTS_NUMA
2568 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2569 Access). This option improves performance on systems with more
2570 than two nodes; on two node systems it is generally better to
2571 leave it disabled; on single node systems disable this option
2574 config SYS_SUPPORTS_NUMA
2578 bool "Relocatable kernel"
2579 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6)
2581 This builds a kernel image that retains relocation information
2582 so it can be loaded someplace besides the default 1MB.
2583 The relocations make the kernel binary about 15% larger,
2584 but are discarded at runtime
2586 config RELOCATION_TABLE_SIZE
2587 hex "Relocation table size"
2588 depends on RELOCATABLE
2589 range 0x0 0x01000000
2590 default "0x00100000"
2592 A table of relocation data will be appended to the kernel binary
2593 and parsed at boot to fix up the relocated kernel.
2595 This option allows the amount of space reserved for the table to be
2596 adjusted, although the default of 1Mb should be ok in most cases.
2598 The build will fail and a valid size suggested if this is too small.
2600 If unsure, leave at the default value.
2602 config RANDOMIZE_BASE
2603 bool "Randomize the address of the kernel image"
2604 depends on RELOCATABLE
2606 Randomizes the physical and virtual address at which the
2607 kernel image is loaded, as a security feature that
2608 deters exploit attempts relying on knowledge of the location
2609 of kernel internals.
2611 Entropy is generated using any coprocessor 0 registers available.
2613 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2617 config RANDOMIZE_BASE_MAX_OFFSET
2618 hex "Maximum kASLR offset" if EXPERT
2619 depends on RANDOMIZE_BASE
2620 range 0x0 0x40000000 if EVA || 64BIT
2621 range 0x0 0x08000000
2622 default "0x01000000"
2624 When kASLR is active, this provides the maximum offset that will
2625 be applied to the kernel image. It should be set according to the
2626 amount of physical RAM available in the target system minus
2627 PHYSICAL_START and must be a power of 2.
2629 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2630 EVA or 64-bit. The default is 16Mb.
2635 depends on NEED_MULTIPLE_NODES
2637 config HW_PERF_EVENTS
2638 bool "Enable hardware performance counter support for perf events"
2639 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2642 Enable hardware performance counter support for perf events. If
2643 disabled, perf events will use software events only.
2648 bool "Multi-Processing support"
2649 depends on SYS_SUPPORTS_SMP
2651 This enables support for systems with more than one CPU. If you have
2652 a system with only one CPU, say N. If you have a system with more
2653 than one CPU, say Y.
2655 If you say N here, the kernel will run on uni- and multiprocessor
2656 machines, but will use only one CPU of a multiprocessor machine. If
2657 you say Y here, the kernel will run on many, but not all,
2658 uniprocessor machines. On a uniprocessor machine, the kernel
2659 will run faster if you say N here.
2661 People using multiprocessor machines who say Y here should also say
2662 Y to "Enhanced Real Time Clock Support", below.
2664 See also the SMP-HOWTO available at
2665 <http://www.tldp.org/docs.html#howto>.
2667 If you don't know what to do here, say N.
2670 bool "Support for hot-pluggable CPUs"
2671 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2673 Say Y here to allow turning CPUs off and on. CPUs can be
2674 controlled through /sys/devices/system/cpu.
2675 (Note: power management support will enable this option
2676 automatically on SMP systems. )
2677 Say N if you want to disable CPU hotplug.
2682 config SYS_SUPPORTS_MIPS_CMP
2685 config SYS_SUPPORTS_MIPS_CPS
2688 config SYS_SUPPORTS_SMP
2691 config NR_CPUS_DEFAULT_4
2694 config NR_CPUS_DEFAULT_8
2697 config NR_CPUS_DEFAULT_16
2700 config NR_CPUS_DEFAULT_32
2703 config NR_CPUS_DEFAULT_64
2707 int "Maximum number of CPUs (2-256)"
2710 default "4" if NR_CPUS_DEFAULT_4
2711 default "8" if NR_CPUS_DEFAULT_8
2712 default "16" if NR_CPUS_DEFAULT_16
2713 default "32" if NR_CPUS_DEFAULT_32
2714 default "64" if NR_CPUS_DEFAULT_64
2716 This allows you to specify the maximum number of CPUs which this
2717 kernel will support. The maximum supported value is 32 for 32-bit
2718 kernel and 64 for 64-bit kernels; the minimum value which makes
2719 sense is 1 for Qemu (useful only for kernel debugging purposes)
2720 and 2 for all others.
2722 This is purely to save memory - each supported CPU adds
2723 approximately eight kilobytes to the kernel image. For best
2724 performance should round up your number of processors to the next
2727 config MIPS_PERF_SHARED_TC_COUNTERS
2731 # Timer Interrupt Frequency Configuration
2735 prompt "Timer frequency"
2738 Allows the configuration of the timer frequency.
2741 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2744 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2747 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2750 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2753 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2756 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2759 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2762 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2766 config SYS_SUPPORTS_24HZ
2769 config SYS_SUPPORTS_48HZ
2772 config SYS_SUPPORTS_100HZ
2775 config SYS_SUPPORTS_128HZ
2778 config SYS_SUPPORTS_250HZ
2781 config SYS_SUPPORTS_256HZ
2784 config SYS_SUPPORTS_1000HZ
2787 config SYS_SUPPORTS_1024HZ
2790 config SYS_SUPPORTS_ARBIT_HZ
2792 default y if !SYS_SUPPORTS_24HZ && \
2793 !SYS_SUPPORTS_48HZ && \
2794 !SYS_SUPPORTS_100HZ && \
2795 !SYS_SUPPORTS_128HZ && \
2796 !SYS_SUPPORTS_250HZ && \
2797 !SYS_SUPPORTS_256HZ && \
2798 !SYS_SUPPORTS_1000HZ && \
2799 !SYS_SUPPORTS_1024HZ
2805 default 100 if HZ_100
2806 default 128 if HZ_128
2807 default 250 if HZ_250
2808 default 256 if HZ_256
2809 default 1000 if HZ_1000
2810 default 1024 if HZ_1024
2813 def_bool HIGH_RES_TIMERS
2815 source "kernel/Kconfig.preempt"
2818 bool "Kexec system call"
2821 kexec is a system call that implements the ability to shutdown your
2822 current kernel, and to start another kernel. It is like a reboot
2823 but it is independent of the system firmware. And like a reboot
2824 you can start any kernel with it, not just Linux.
2826 The name comes from the similarity to the exec system call.
2828 It is an ongoing process to be certain the hardware in a machine
2829 is properly shutdown, so do not be surprised if this code does not
2830 initially work for you. As of this writing the exact hardware
2831 interface is strongly in flux, so no good recommendation can be
2835 bool "Kernel crash dumps"
2837 Generate crash dump after being started by kexec.
2838 This should be normally only set in special crash dump kernels
2839 which are loaded in the main kernel with kexec-tools into
2840 a specially reserved region and then later executed after
2841 a crash by kdump/kexec. The crash dump kernel must be compiled
2842 to a memory address not used by the main kernel or firmware using
2845 config PHYSICAL_START
2846 hex "Physical address where the kernel is loaded"
2847 default "0xffffffff84000000" if 64BIT
2848 default "0x84000000" if 32BIT
2849 depends on CRASH_DUMP
2851 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2852 If you plan to use kernel for capturing the crash dump change
2853 this value to start of the reserved region (the "X" value as
2854 specified in the "crashkernel=YM@XM" command line boot parameter
2855 passed to the panic-ed kernel).
2858 bool "Enable seccomp to safely compute untrusted bytecode"
2862 This kernel feature is useful for number crunching applications
2863 that may need to compute untrusted bytecode during their
2864 execution. By using pipes or other transports made available to
2865 the process as file descriptors supporting the read/write
2866 syscalls, it's possible to isolate those applications in
2867 their own address space using seccomp. Once seccomp is
2868 enabled via /proc/<pid>/seccomp, it cannot be disabled
2869 and the task is only allowed to execute a few safe syscalls
2870 defined by each seccomp mode.
2872 If unsure, say Y. Only embedded should say N here.
2874 config MIPS_O32_FP64_SUPPORT
2875 bool "Support for O32 binaries using 64-bit FP"
2876 depends on 32BIT || MIPS32_O32
2878 When this is enabled, the kernel will support use of 64-bit floating
2879 point registers with binaries using the O32 ABI along with the
2880 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2881 32-bit MIPS systems this support is at the cost of increasing the
2882 size and complexity of the compiled FPU emulator. Thus if you are
2883 running a MIPS32 system and know that none of your userland binaries
2884 will require 64-bit floating point, you may wish to reduce the size
2885 of your kernel & potentially improve FP emulation performance by
2888 Although binutils currently supports use of this flag the details
2889 concerning its effect upon the O32 ABI in userland are still being
2890 worked on. In order to avoid userland becoming dependant upon current
2891 behaviour before the details have been finalised, this option should
2892 be considered experimental and only enabled by those working upon
2900 select OF_EARLY_FLATTREE
2907 prompt "Kernel appended dtb support" if USE_OF
2908 default MIPS_NO_APPENDED_DTB
2910 config MIPS_NO_APPENDED_DTB
2913 Do not enable appended dtb support.
2915 config MIPS_ELF_APPENDED_DTB
2918 With this option, the boot code will look for a device tree binary
2919 DTB) included in the vmlinux ELF section .appended_dtb. By default
2920 it is empty and the DTB can be appended using binutils command
2923 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2925 This is meant as a backward compatiblity convenience for those
2926 systems with a bootloader that can't be upgraded to accommodate
2927 the documented boot protocol using a device tree.
2929 config MIPS_RAW_APPENDED_DTB
2930 bool "vmlinux.bin or vmlinuz.bin"
2932 With this option, the boot code will look for a device tree binary
2933 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2934 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2936 This is meant as a backward compatibility convenience for those
2937 systems with a bootloader that can't be upgraded to accommodate
2938 the documented boot protocol using a device tree.
2940 Beware that there is very little in terms of protection against
2941 this option being confused by leftover garbage in memory that might
2942 look like a DTB header after a reboot if no actual DTB is appended
2943 to vmlinux.bin. Do not leave this option active in a production kernel
2944 if you don't intend to always append a DTB.
2948 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2949 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2952 default MIPS_CMDLINE_FROM_BOOTLOADER
2954 config MIPS_CMDLINE_FROM_DTB
2956 bool "Dtb kernel arguments if available"
2958 config MIPS_CMDLINE_DTB_EXTEND
2960 bool "Extend dtb kernel arguments with bootloader arguments"
2962 config MIPS_CMDLINE_FROM_BOOTLOADER
2963 bool "Bootloader kernel arguments if available"
2965 config MIPS_CMDLINE_BUILTIN_EXTEND
2966 depends on CMDLINE_BOOL
2967 bool "Extend builtin kernel arguments with bootloader arguments"
2972 config LOCKDEP_SUPPORT
2976 config STACKTRACE_SUPPORT
2980 config HAVE_LATENCYTOP_SUPPORT
2984 config PGTABLE_LEVELS
2986 default 3 if 64BIT && !PAGE_SIZE_64KB
2989 source "init/Kconfig"
2991 source "kernel/Kconfig.freezer"
2993 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
3001 bool "Support for PCI controller"
3002 depends on HW_HAS_PCI
3005 Find out whether you have a PCI motherboard. PCI is the name of a
3006 bus system, i.e. the way the CPU talks to the other stuff inside
3007 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
3011 bool "Support for HT-linked PCI"
3013 depends on CPU_LOONGSON3
3017 Loongson family machines use Hyper-Transport bus for inter-core
3018 connection and device connection. The PCI bus is a subordinate
3019 linked at HT. Choose Y for Loongson-3 based machines.
3024 config PCI_DOMAINS_GENERIC
3027 config PCI_DRIVERS_GENERIC
3028 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3031 config PCI_DRIVERS_LEGACY
3032 def_bool !PCI_DRIVERS_GENERIC
3033 select NO_GENERIC_PCI_IOPORT_MAP
3035 source "drivers/pci/Kconfig"
3038 # ISA support is now enabled via select. Too many systems still have the one
3039 # or other ISA chip on the board that users don't know about so don't expect
3040 # users to choose the right thing ...
3047 depends on HW_HAS_EISA
3049 select GENERIC_ISA_DMA
3051 The Extended Industry Standard Architecture (EISA) bus was
3052 developed as an open alternative to the IBM MicroChannel bus.
3054 The EISA bus provided some of the features of the IBM MicroChannel
3055 bus while maintaining backward compatibility with cards made for
3056 the older ISA bus. The EISA bus saw limited use between 1988 and
3057 1995 when it was made obsolete by the PCI bus.
3059 Say Y here if you are building a kernel for an EISA-based machine.
3063 source "drivers/eisa/Kconfig"
3066 bool "TURBOchannel support"
3067 depends on MACH_DECSTATION
3069 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3070 processors. TURBOchannel programming specifications are available
3072 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3074 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3075 Linux driver support status is documented at:
3076 <http://www.linux-mips.org/wiki/DECstation>
3086 select MIPS_EXTERNAL_TIMER
3094 source "drivers/pcmcia/Kconfig"
3097 tristate "RapidIO support"
3101 If you say Y here, the kernel will include drivers and
3102 infrastructure code to support RapidIO interconnect devices.
3104 source "drivers/rapidio/Kconfig"
3108 menu "Executable file formats"
3110 source "fs/Kconfig.binfmt"
3115 config MIPS32_COMPAT
3121 config SYSVIPC_COMPAT
3125 bool "Kernel support for o32 binaries"
3127 select ARCH_WANT_OLD_COMPAT_IPC
3129 select MIPS32_COMPAT
3130 select SYSVIPC_COMPAT if SYSVIPC
3132 Select this option if you want to run o32 binaries. These are pure
3133 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3134 existing binaries are in this format.
3139 bool "Kernel support for n32 binaries"
3141 select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
3143 select MIPS32_COMPAT
3144 select SYSVIPC_COMPAT if SYSVIPC
3146 Select this option if you want to run n32 binaries. These are
3147 64-bit binaries using 32-bit quantities for addressing and certain
3148 data that would normally be 64-bit. They are used in special
3155 default y if MIPS32_O32 || MIPS32_N32
3160 menu "Power management options"
3162 config ARCH_HIBERNATION_POSSIBLE
3164 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3166 config ARCH_SUSPEND_POSSIBLE
3168 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3170 source "kernel/power/Kconfig"
3174 config MIPS_EXTERNAL_TIMER
3177 menu "CPU Power Management"
3179 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3180 source "drivers/cpufreq/Kconfig"
3183 source "drivers/cpuidle/Kconfig"
3187 source "net/Kconfig"
3189 source "drivers/Kconfig"
3191 source "drivers/firmware/Kconfig"
3195 source "arch/mips/Kconfig.debug"
3197 source "security/Kconfig"
3199 source "crypto/Kconfig"
3201 source "lib/Kconfig"
3203 source "arch/mips/kvm/Kconfig"