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_BPF_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
83 select ARCH_REQUIRE_GPIOLIB
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
102 select ARCH_REQUIRE_GPIOLIB
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
126 select ARCH_REQUIRE_GPIOLIB
130 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
174 select ARCH_WANT_OPTIONAL_GPIOLIB
176 Build a generic DT-based kernel image that boots on select
177 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
178 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
179 must be set appropriately for your board.
182 bool "Broadcom BCM47XX based boards"
183 select ARCH_WANT_OPTIONAL_GPIOLIB
187 select DMA_NONCOHERENT
190 select SYS_HAS_CPU_MIPS32_R1
191 select NO_EXCEPT_FILL
192 select SYS_SUPPORTS_32BIT_KERNEL
193 select SYS_SUPPORTS_LITTLE_ENDIAN
194 select SYS_SUPPORTS_MIPS16
195 select SYS_HAS_EARLY_PRINTK
196 select USE_GENERIC_EARLY_PRINTK_8250
198 select LEDS_GPIO_REGISTER
202 Support for BCM47XX based boards
205 bool "Broadcom BCM63XX based boards"
210 select DMA_NONCOHERENT
212 select SYS_SUPPORTS_32BIT_KERNEL
213 select SYS_SUPPORTS_BIG_ENDIAN
214 select SYS_HAS_EARLY_PRINTK
216 select ARCH_REQUIRE_GPIOLIB
218 select MIPS_L1_CACHE_SHIFT_4
220 Support for BCM63XX based boards
227 select DMA_NONCOHERENT
233 select PCI_GT64XXX_PCI0
235 select SYS_HAS_CPU_NEVADA
236 select SYS_HAS_EARLY_PRINTK
237 select SYS_SUPPORTS_32BIT_KERNEL
238 select SYS_SUPPORTS_64BIT_KERNEL
239 select SYS_SUPPORTS_LITTLE_ENDIAN
240 select USE_GENERIC_EARLY_PRINTK_8250
242 config MACH_DECSTATION
246 select CEVT_R4K if CPU_R4X00
248 select CSRC_R4K if CPU_R4X00
249 select CPU_DADDI_WORKAROUNDS if 64BIT
250 select CPU_R4000_WORKAROUNDS if 64BIT
251 select CPU_R4400_WORKAROUNDS if 64BIT
252 select DMA_NONCOHERENT
255 select SYS_HAS_CPU_R3000
256 select SYS_HAS_CPU_R4X00
257 select SYS_SUPPORTS_32BIT_KERNEL
258 select SYS_SUPPORTS_64BIT_KERNEL
259 select SYS_SUPPORTS_LITTLE_ENDIAN
260 select SYS_SUPPORTS_128HZ
261 select SYS_SUPPORTS_256HZ
262 select SYS_SUPPORTS_1024HZ
263 select MIPS_L1_CACHE_SHIFT_4
265 This enables support for DEC's MIPS based workstations. For details
266 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
267 DECstation porting pages on <http://decstation.unix-ag.org/>.
269 If you have one of the following DECstation Models you definitely
270 want to choose R4xx0 for the CPU Type:
277 otherwise choose R3000.
280 bool "Jazz family of machines"
283 select ARCH_MAY_HAVE_PC_FDC
286 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
287 select GENERIC_ISA_DMA
288 select HAVE_PCSPKR_PLATFORM
293 select SYS_HAS_CPU_R4X00
294 select SYS_SUPPORTS_32BIT_KERNEL
295 select SYS_SUPPORTS_64BIT_KERNEL
296 select SYS_SUPPORTS_100HZ
298 This a family of machines based on the MIPS R4030 chipset which was
299 used by several vendors to build RISC/os and Windows NT workstations.
300 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
301 Olivetti M700-10 workstations.
304 bool "Ingenic SoC based machines"
305 select SYS_SUPPORTS_32BIT_KERNEL
306 select SYS_SUPPORTS_LITTLE_ENDIAN
307 select SYS_SUPPORTS_ZBOOT_UART16550
308 select DMA_NONCOHERENT
310 select ARCH_REQUIRE_GPIOLIB
312 select GENERIC_IRQ_CHIP
318 bool "Lantiq based platforms"
319 select DMA_NONCOHERENT
323 select SYS_HAS_CPU_MIPS32_R1
324 select SYS_HAS_CPU_MIPS32_R2
325 select SYS_SUPPORTS_BIG_ENDIAN
326 select SYS_SUPPORTS_32BIT_KERNEL
327 select SYS_SUPPORTS_MIPS16
328 select SYS_SUPPORTS_MULTITHREADING
329 select SYS_HAS_EARLY_PRINTK
330 select ARCH_REQUIRE_GPIOLIB
336 select PINCTRL_LANTIQ
337 select ARCH_HAS_RESET_CONTROLLER
338 select RESET_CONTROLLER
341 bool "LASAT Networks platforms"
345 select DMA_NONCOHERENT
346 select SYS_HAS_EARLY_PRINTK
349 select PCI_GT64XXX_PCI0
351 select R5000_CPU_SCACHE
352 select SYS_HAS_CPU_R5000
353 select SYS_SUPPORTS_32BIT_KERNEL
354 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
355 select SYS_SUPPORTS_LITTLE_ENDIAN
357 config MACH_LOONGSON32
358 bool "Loongson-1 family of machines"
359 select SYS_SUPPORTS_ZBOOT
361 This enables support for the Loongson-1 family of machines.
363 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
364 the Institute of Computing Technology (ICT), Chinese Academy of
367 config MACH_LOONGSON64
368 bool "Loongson-2/3 family of machines"
369 select SYS_SUPPORTS_ZBOOT
371 This enables the support of Loongson-2/3 family of machines.
373 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
374 family of multi-core CPUs. They are both 64-bit general-purpose
375 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
376 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
377 in the People's Republic of China. The chief architect is Professor
380 config MACH_PISTACHIO
381 bool "IMG Pistachio SoC based boards"
382 select ARCH_REQUIRE_GPIOLIB
386 select CLKSRC_MIPS_GIC
389 select DMA_MAYBE_COHERENT
393 select MIPS_CPU_SCACHE
397 select SYS_HAS_CPU_MIPS32_R2
398 select SYS_SUPPORTS_32BIT_KERNEL
399 select SYS_SUPPORTS_LITTLE_ENDIAN
400 select SYS_SUPPORTS_MIPS_CPS
401 select SYS_SUPPORTS_MULTITHREADING
402 select SYS_SUPPORTS_ZBOOT
403 select SYS_HAS_EARLY_PRINTK
404 select USE_GENERIC_EARLY_PRINTK_8250
407 This enables support for the IMG Pistachio SoC platform.
410 bool "MIPSfpga Xilinx based boards"
411 select ARCH_REQUIRE_GPIOLIB
420 select MIPS_CPU_SCACHE
421 select SYS_HAS_EARLY_PRINTK
422 select SYS_HAS_CPU_MIPS32_R2
423 select SYS_SUPPORTS_32BIT_KERNEL
424 select SYS_SUPPORTS_LITTLE_ENDIAN
425 select SYS_SUPPORTS_ZBOOT_UART16550
427 select USE_GENERIC_EARLY_PRINTK_8250
429 This enables support for the IMG University Program MIPSfpga platform.
432 bool "MIPS Malta board"
433 select ARCH_MAY_HAVE_PC_FDC
439 select CLKSRC_MIPS_GIC
441 select DMA_MAYBE_COHERENT
442 select GENERIC_ISA_DMA
443 select HAVE_PCSPKR_PLATFORM
450 select MIPS_CPU_SCACHE
451 select MIPS_L1_CACHE_SHIFT_6
452 select PCI_GT64XXX_PCI0
456 select SYS_HAS_CPU_MIPS32_R1
457 select SYS_HAS_CPU_MIPS32_R2
458 select SYS_HAS_CPU_MIPS32_R3_5
459 select SYS_HAS_CPU_MIPS32_R5
460 select SYS_HAS_CPU_MIPS32_R6
461 select SYS_HAS_CPU_MIPS64_R1
462 select SYS_HAS_CPU_MIPS64_R2
463 select SYS_HAS_CPU_MIPS64_R6
464 select SYS_HAS_CPU_NEVADA
465 select SYS_HAS_CPU_RM7000
466 select SYS_SUPPORTS_32BIT_KERNEL
467 select SYS_SUPPORTS_64BIT_KERNEL
468 select SYS_SUPPORTS_BIG_ENDIAN
469 select SYS_SUPPORTS_HIGHMEM
470 select SYS_SUPPORTS_LITTLE_ENDIAN
471 select SYS_SUPPORTS_MICROMIPS
472 select SYS_SUPPORTS_MIPS_CMP
473 select SYS_SUPPORTS_MIPS_CPS
474 select SYS_SUPPORTS_MIPS16
475 select SYS_SUPPORTS_MULTITHREADING
476 select SYS_SUPPORTS_SMARTMIPS
477 select SYS_SUPPORTS_ZBOOT
478 select SYS_SUPPORTS_RELOCATABLE
480 select ZONE_DMA32 if 64BIT
484 This enables support for the MIPS Technologies Malta evaluation
488 bool "Microchip PIC32 Family"
490 This enables support for the Microchip PIC32 family of platforms.
492 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
496 bool "MIPS SEAD3 board"
502 select CLKSRC_MIPS_GIC
504 select CPU_MIPSR2_IRQ_VI
505 select CPU_MIPSR2_IRQ_EI
506 select DMA_NONCOHERENT
511 select SYS_HAS_CPU_MIPS32_R1
512 select SYS_HAS_CPU_MIPS32_R2
513 select SYS_HAS_CPU_MIPS32_R6
514 select SYS_HAS_CPU_MIPS64_R1
515 select SYS_HAS_EARLY_PRINTK
516 select SYS_SUPPORTS_32BIT_KERNEL
517 select SYS_SUPPORTS_64BIT_KERNEL
518 select SYS_SUPPORTS_BIG_ENDIAN
519 select SYS_SUPPORTS_LITTLE_ENDIAN
520 select SYS_SUPPORTS_SMARTMIPS
521 select SYS_SUPPORTS_MICROMIPS
522 select SYS_SUPPORTS_MIPS16
523 select SYS_SUPPORTS_RELOCATABLE
524 select USB_EHCI_BIG_ENDIAN_DESC
525 select USB_EHCI_BIG_ENDIAN_MMIO
528 This enables support for the MIPS Technologies SEAD3 evaluation
532 bool "NEC EMMA2RH Mark-eins board"
536 This enables support for the NEC Electronics Mark-eins boards.
539 bool "NEC VR4100 series based machines"
542 select SYS_HAS_CPU_VR41XX
543 select SYS_SUPPORTS_MIPS16
544 select ARCH_REQUIRE_GPIOLIB
547 bool "NXP STB220 board"
550 Support for NXP Semiconductors STB220 Development Board.
557 Support for NXP Semiconductors STB225 Development Board.
560 bool "PMC-Sierra MSP chipsets"
563 select DMA_NONCOHERENT
565 select NO_EXCEPT_FILL
567 select SYS_HAS_CPU_MIPS32_R1
568 select SYS_HAS_CPU_MIPS32_R2
569 select SYS_SUPPORTS_32BIT_KERNEL
570 select SYS_SUPPORTS_BIG_ENDIAN
571 select SYS_SUPPORTS_MIPS16
574 select SERIAL_8250_CONSOLE
575 select USB_EHCI_BIG_ENDIAN_MMIO
576 select USB_EHCI_BIG_ENDIAN_DESC
578 This adds support for the PMC-Sierra family of Multi-Service
579 Processor System-On-A-Chips. These parts include a number
580 of integrated peripherals, interfaces and DSPs in addition to
581 a variety of MIPS cores.
584 bool "Ralink based machines"
588 select DMA_NONCOHERENT
591 select SYS_HAS_CPU_MIPS32_R1
592 select SYS_HAS_CPU_MIPS32_R2
593 select SYS_SUPPORTS_32BIT_KERNEL
594 select SYS_SUPPORTS_LITTLE_ENDIAN
595 select SYS_SUPPORTS_MIPS16
596 select SYS_HAS_EARLY_PRINTK
598 select ARCH_HAS_RESET_CONTROLLER
599 select RESET_CONTROLLER
602 bool "SGI IP22 (Indy/Indigo2)"
608 select DEFAULT_SGI_PARTITION
609 select DMA_NONCOHERENT
613 select IP22_CPU_SCACHE
615 select GENERIC_ISA_DMA_SUPPORT_BROKEN
617 select SGI_HAS_INDYDOG
623 select SYS_HAS_CPU_R4X00
624 select SYS_HAS_CPU_R5000
626 # Disable EARLY_PRINTK for now since it leads to overwritten prom
627 # memory during early boot on some machines.
629 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
630 # for a more details discussion
632 # select SYS_HAS_EARLY_PRINTK
633 select SYS_SUPPORTS_32BIT_KERNEL
634 select SYS_SUPPORTS_64BIT_KERNEL
635 select SYS_SUPPORTS_BIG_ENDIAN
636 select MIPS_L1_CACHE_SHIFT_7
638 This are the SGI Indy, Challenge S and Indigo2, as well as certain
639 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
640 that runs on these, say Y here.
643 bool "SGI IP27 (Origin200/2000)"
647 select DEFAULT_SGI_PARTITION
649 select SYS_HAS_EARLY_PRINTK
651 select NR_CPUS_DEFAULT_64
652 select SYS_HAS_CPU_R10000
653 select SYS_SUPPORTS_64BIT_KERNEL
654 select SYS_SUPPORTS_BIG_ENDIAN
655 select SYS_SUPPORTS_NUMA
656 select SYS_SUPPORTS_SMP
657 select MIPS_L1_CACHE_SHIFT_7
659 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
660 workstations. To compile a Linux kernel that runs on these, say Y
664 bool "SGI IP28 (Indigo2 R10k)"
670 select DEFAULT_SGI_PARTITION
671 select DMA_NONCOHERENT
672 select GENERIC_ISA_DMA_SUPPORT_BROKEN
678 select SGI_HAS_INDYDOG
684 select SYS_HAS_CPU_R10000
686 # Disable EARLY_PRINTK for now since it leads to overwritten prom
687 # memory during early boot on some machines.
689 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
690 # for a more details discussion
692 # select SYS_HAS_EARLY_PRINTK
693 select SYS_SUPPORTS_64BIT_KERNEL
694 select SYS_SUPPORTS_BIG_ENDIAN
695 select MIPS_L1_CACHE_SHIFT_7
697 This is the SGI Indigo2 with R10000 processor. To compile a Linux
698 kernel that runs on these, say Y here.
707 select DMA_NONCOHERENT
710 select R5000_CPU_SCACHE
711 select RM7000_CPU_SCACHE
712 select SYS_HAS_CPU_R5000
713 select SYS_HAS_CPU_R10000 if BROKEN
714 select SYS_HAS_CPU_RM7000
715 select SYS_HAS_CPU_NEVADA
716 select SYS_SUPPORTS_64BIT_KERNEL
717 select SYS_SUPPORTS_BIG_ENDIAN
719 If you want this kernel to run on SGI O2 workstation, say Y here.
722 bool "Sibyte BCM91120C-CRhine"
725 select SIBYTE_BCM1120
727 select SYS_HAS_CPU_SB1
728 select SYS_SUPPORTS_BIG_ENDIAN
729 select SYS_SUPPORTS_LITTLE_ENDIAN
732 bool "Sibyte BCM91120x-Carmel"
735 select SIBYTE_BCM1120
737 select SYS_HAS_CPU_SB1
738 select SYS_SUPPORTS_BIG_ENDIAN
739 select SYS_SUPPORTS_LITTLE_ENDIAN
742 bool "Sibyte BCM91125C-CRhone"
745 select SIBYTE_BCM1125
747 select SYS_HAS_CPU_SB1
748 select SYS_SUPPORTS_BIG_ENDIAN
749 select SYS_SUPPORTS_HIGHMEM
750 select SYS_SUPPORTS_LITTLE_ENDIAN
753 bool "Sibyte BCM91125E-Rhone"
756 select SIBYTE_BCM1125H
758 select SYS_HAS_CPU_SB1
759 select SYS_SUPPORTS_BIG_ENDIAN
760 select SYS_SUPPORTS_LITTLE_ENDIAN
763 bool "Sibyte BCM91250A-SWARM"
766 select HAVE_PATA_PLATFORM
769 select SYS_HAS_CPU_SB1
770 select SYS_SUPPORTS_BIG_ENDIAN
771 select SYS_SUPPORTS_HIGHMEM
772 select SYS_SUPPORTS_LITTLE_ENDIAN
773 select ZONE_DMA32 if 64BIT
775 config SIBYTE_LITTLESUR
776 bool "Sibyte BCM91250C2-LittleSur"
779 select HAVE_PATA_PLATFORM
782 select SYS_HAS_CPU_SB1
783 select SYS_SUPPORTS_BIG_ENDIAN
784 select SYS_SUPPORTS_HIGHMEM
785 select SYS_SUPPORTS_LITTLE_ENDIAN
787 config SIBYTE_SENTOSA
788 bool "Sibyte BCM91250E-Sentosa"
793 select SYS_HAS_CPU_SB1
794 select SYS_SUPPORTS_BIG_ENDIAN
795 select SYS_SUPPORTS_LITTLE_ENDIAN
798 bool "Sibyte BCM91480B-BigSur"
801 select NR_CPUS_DEFAULT_4
802 select SIBYTE_BCM1x80
804 select SYS_HAS_CPU_SB1
805 select SYS_SUPPORTS_BIG_ENDIAN
806 select SYS_SUPPORTS_HIGHMEM
807 select SYS_SUPPORTS_LITTLE_ENDIAN
808 select ZONE_DMA32 if 64BIT
811 bool "SNI RM200/300/400"
812 select FW_ARC if CPU_LITTLE_ENDIAN
813 select FW_ARC32 if CPU_LITTLE_ENDIAN
814 select FW_SNIPROM if CPU_BIG_ENDIAN
815 select ARCH_MAY_HAVE_PC_FDC
819 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
820 select DMA_NONCOHERENT
821 select GENERIC_ISA_DMA
822 select HAVE_PCSPKR_PLATFORM
829 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
830 select SYS_HAS_CPU_R4X00
831 select SYS_HAS_CPU_R5000
832 select SYS_HAS_CPU_R10000
833 select R5000_CPU_SCACHE
834 select SYS_HAS_EARLY_PRINTK
835 select SYS_SUPPORTS_32BIT_KERNEL
836 select SYS_SUPPORTS_64BIT_KERNEL
837 select SYS_SUPPORTS_BIG_ENDIAN
838 select SYS_SUPPORTS_HIGHMEM
839 select SYS_SUPPORTS_LITTLE_ENDIAN
841 The SNI RM200/300/400 are MIPS-based machines manufactured by
842 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
843 Technology and now in turn merged with Fujitsu. Say Y here to
844 support this machine type.
847 bool "Toshiba TX39 series based machines"
850 bool "Toshiba TX49 series based machines"
852 config MIKROTIK_RB532
853 bool "Mikrotik RB532 boards"
856 select DMA_NONCOHERENT
859 select SYS_HAS_CPU_MIPS32_R1
860 select SYS_SUPPORTS_32BIT_KERNEL
861 select SYS_SUPPORTS_LITTLE_ENDIAN
864 select ARCH_REQUIRE_GPIOLIB
865 select MIPS_L1_CACHE_SHIFT_4
867 Support the Mikrotik(tm) RouterBoard 532 series,
868 based on the IDT RC32434 SoC.
870 config CAVIUM_OCTEON_SOC
871 bool "Cavium Networks Octeon SoC based boards"
873 select ARCH_PHYS_ADDR_T_64BIT
875 select SYS_SUPPORTS_64BIT_KERNEL
876 select SYS_SUPPORTS_BIG_ENDIAN
878 select EDAC_ATOMIC_SCRUB
879 select SYS_SUPPORTS_LITTLE_ENDIAN
880 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
881 select SYS_HAS_EARLY_PRINTK
882 select SYS_HAS_CPU_CAVIUM_OCTEON
887 select ARCH_REQUIRE_GPIOLIB
890 select ARCH_SPARSEMEM_ENABLE
891 select SYS_SUPPORTS_SMP
892 select NR_CPUS_DEFAULT_16
894 select MTD_COMPLEX_MAPPINGS
896 This option supports all of the Octeon reference boards from Cavium
897 Networks. It builds a kernel that dynamically determines the Octeon
898 CPU type and supports all known board reference implementations.
899 Some of the supported boards are:
906 Say Y here for most Octeon reference boards.
909 bool "Netlogic XLR/XLS based systems"
912 select SYS_HAS_CPU_XLR
913 select SYS_SUPPORTS_SMP
916 select SYS_SUPPORTS_32BIT_KERNEL
917 select SYS_SUPPORTS_64BIT_KERNEL
918 select ARCH_PHYS_ADDR_T_64BIT
919 select SYS_SUPPORTS_BIG_ENDIAN
920 select SYS_SUPPORTS_HIGHMEM
922 select NR_CPUS_DEFAULT_32
926 select ZONE_DMA32 if 64BIT
928 select SYS_HAS_EARLY_PRINTK
929 select SYS_SUPPORTS_ZBOOT
930 select SYS_SUPPORTS_ZBOOT_UART16550
932 Support for systems based on Netlogic XLR and XLS processors.
933 Say Y here if you have a XLR or XLS based board.
936 bool "Netlogic XLP based systems"
939 select SYS_HAS_CPU_XLP
940 select SYS_SUPPORTS_SMP
942 select SYS_SUPPORTS_32BIT_KERNEL
943 select SYS_SUPPORTS_64BIT_KERNEL
944 select ARCH_PHYS_ADDR_T_64BIT
945 select ARCH_REQUIRE_GPIOLIB
946 select SYS_SUPPORTS_BIG_ENDIAN
947 select SYS_SUPPORTS_LITTLE_ENDIAN
948 select SYS_SUPPORTS_HIGHMEM
950 select NR_CPUS_DEFAULT_32
954 select ZONE_DMA32 if 64BIT
956 select SYS_HAS_EARLY_PRINTK
958 select SYS_SUPPORTS_ZBOOT
959 select SYS_SUPPORTS_ZBOOT_UART16550
961 This board is based on Netlogic XLP Processor.
962 Say Y here if you have a XLP based board.
965 bool "Para-Virtualized guest system"
969 select SYS_SUPPORTS_64BIT_KERNEL
970 select SYS_SUPPORTS_32BIT_KERNEL
971 select SYS_SUPPORTS_BIG_ENDIAN
972 select SYS_SUPPORTS_SMP
973 select NR_CPUS_DEFAULT_4
974 select SYS_HAS_EARLY_PRINTK
975 select SYS_HAS_CPU_MIPS32_R2
976 select SYS_HAS_CPU_MIPS64_R2
977 select SYS_HAS_CPU_CAVIUM_OCTEON
981 This option supports guest running under ????
985 source "arch/mips/alchemy/Kconfig"
986 source "arch/mips/ath25/Kconfig"
987 source "arch/mips/ath79/Kconfig"
988 source "arch/mips/bcm47xx/Kconfig"
989 source "arch/mips/bcm63xx/Kconfig"
990 source "arch/mips/bmips/Kconfig"
991 source "arch/mips/jazz/Kconfig"
992 source "arch/mips/jz4740/Kconfig"
993 source "arch/mips/lantiq/Kconfig"
994 source "arch/mips/lasat/Kconfig"
995 source "arch/mips/pic32/Kconfig"
996 source "arch/mips/pistachio/Kconfig"
997 source "arch/mips/pmcs-msp71xx/Kconfig"
998 source "arch/mips/ralink/Kconfig"
999 source "arch/mips/sgi-ip27/Kconfig"
1000 source "arch/mips/sibyte/Kconfig"
1001 source "arch/mips/txx9/Kconfig"
1002 source "arch/mips/vr41xx/Kconfig"
1003 source "arch/mips/cavium-octeon/Kconfig"
1004 source "arch/mips/loongson32/Kconfig"
1005 source "arch/mips/loongson64/Kconfig"
1006 source "arch/mips/netlogic/Kconfig"
1007 source "arch/mips/paravirt/Kconfig"
1008 source "arch/mips/xilfpga/Kconfig"
1012 config RWSEM_GENERIC_SPINLOCK
1016 config RWSEM_XCHGADD_ALGORITHM
1019 config ARCH_HAS_ILOG2_U32
1023 config ARCH_HAS_ILOG2_U64
1027 config GENERIC_HWEIGHT
1031 config GENERIC_CALIBRATE_DELAY
1035 config SCHED_OMIT_FRAME_POINTER
1040 # Select some configuration options automatically based on user selections.
1045 config ARCH_MAY_HAVE_PC_FDC
1081 config MIPS_CLOCK_VSYSCALL
1082 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1085 select ARCH_REQUIRE_GPIOLIB
1091 config ARCH_DMA_ADDR_T_64BIT
1092 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1094 config ARCH_SUPPORTS_UPROBES
1097 config DMA_MAYBE_COHERENT
1098 select DMA_NONCOHERENT
1104 config DMA_NONCOHERENT
1106 select NEED_DMA_MAP_STATE
1108 config NEED_DMA_MAP_STATE
1111 config SYS_HAS_EARLY_PRINTK
1115 bool "Support for hot-pluggable CPUs"
1116 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
1118 Say Y here to allow turning CPUs off and on. CPUs can be
1119 controlled through /sys/devices/system/cpu.
1120 (Note: power management support will enable this option
1121 automatically on SMP systems. )
1122 Say N if you want to disable CPU hotplug.
1124 config SYS_SUPPORTS_HOTPLUG_CPU
1127 config MIPS_BONITO64
1142 config NO_IOPORT_MAP
1148 config GENERIC_ISA_DMA
1150 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1153 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1155 select GENERIC_ISA_DMA
1160 config HOLES_IN_ZONE
1163 config SYS_SUPPORTS_RELOCATABLE
1166 Selected if the platform supports relocating the kernel.
1167 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1168 to allow access to command line and entropy sources.
1171 # Endianness selection. Sufficiently obscure so many users don't know what to
1172 # answer,so we try hard to limit the available choices. Also the use of a
1173 # choice statement should be more obvious to the user.
1176 prompt "Endianness selection"
1178 Some MIPS machines can be configured for either little or big endian
1179 byte order. These modes require different kernels and a different
1180 Linux distribution. In general there is one preferred byteorder for a
1181 particular system but some systems are just as commonly used in the
1182 one or the other endianness.
1184 config CPU_BIG_ENDIAN
1186 depends on SYS_SUPPORTS_BIG_ENDIAN
1188 config CPU_LITTLE_ENDIAN
1189 bool "Little endian"
1190 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1197 config SYS_SUPPORTS_APM_EMULATION
1200 config SYS_SUPPORTS_BIG_ENDIAN
1203 config SYS_SUPPORTS_LITTLE_ENDIAN
1206 config SYS_SUPPORTS_HUGETLBFS
1208 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1211 config MIPS_HUGE_TLB_SUPPORT
1212 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1229 config PCI_GT64XXX_PCI0
1232 config NO_EXCEPT_FILL
1239 select DMA_NONCOHERENT
1241 select SWAP_IO_SPACE
1242 select SYS_HAS_CPU_R5500
1243 select SYS_SUPPORTS_32BIT_KERNEL
1244 select SYS_SUPPORTS_64BIT_KERNEL
1245 select SYS_SUPPORTS_BIG_ENDIAN
1252 select DMA_NONCOHERENT
1253 select SYS_HAS_CPU_MIPS32_R2
1254 select SYS_SUPPORTS_32BIT_KERNEL
1255 select SYS_SUPPORTS_LITTLE_ENDIAN
1256 select SYS_SUPPORTS_BIG_ENDIAN
1257 select SYS_SUPPORTS_MIPS16
1258 select CPU_MIPSR2_IRQ_VI
1267 config SWAP_IO_SPACE
1270 config SGI_HAS_INDYDOG
1282 config SGI_HAS_ZILOG
1285 config SGI_HAS_I8042
1288 config DEFAULT_SGI_PARTITION
1300 config MIPS_L1_CACHE_SHIFT_4
1303 config MIPS_L1_CACHE_SHIFT_5
1306 config MIPS_L1_CACHE_SHIFT_6
1309 config MIPS_L1_CACHE_SHIFT_7
1312 config MIPS_L1_CACHE_SHIFT
1314 default "7" if MIPS_L1_CACHE_SHIFT_7
1315 default "6" if MIPS_L1_CACHE_SHIFT_6
1316 default "5" if MIPS_L1_CACHE_SHIFT_5
1317 default "4" if MIPS_L1_CACHE_SHIFT_4
1320 config HAVE_STD_PC_SERIAL_PORT
1324 bool "ARC console support"
1325 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1329 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1334 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1343 menu "CPU selection"
1349 config CPU_LOONGSON3
1350 bool "Loongson 3 CPU"
1351 depends on SYS_HAS_CPU_LOONGSON3
1352 select CPU_SUPPORTS_64BIT_KERNEL
1353 select CPU_SUPPORTS_HIGHMEM
1354 select CPU_SUPPORTS_HUGEPAGES
1355 select WEAK_ORDERING
1356 select WEAK_REORDERING_BEYOND_LLSC
1357 select ARCH_REQUIRE_GPIOLIB
1359 The Loongson 3 processor implements the MIPS64R2 instruction
1360 set with many extensions.
1362 config CPU_LOONGSON2E
1364 depends on SYS_HAS_CPU_LOONGSON2E
1365 select CPU_LOONGSON2
1367 The Loongson 2E processor implements the MIPS III instruction set
1368 with many extensions.
1370 It has an internal FPGA northbridge, which is compatible to
1373 config CPU_LOONGSON2F
1375 depends on SYS_HAS_CPU_LOONGSON2F
1376 select CPU_LOONGSON2
1377 select ARCH_REQUIRE_GPIOLIB
1379 The Loongson 2F processor implements the MIPS III instruction set
1380 with many extensions.
1382 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1383 have a similar programming interface with FPGA northbridge used in
1386 config CPU_LOONGSON1B
1388 depends on SYS_HAS_CPU_LOONGSON1B
1389 select CPU_LOONGSON1
1390 select ARCH_WANT_OPTIONAL_GPIOLIB
1391 select LEDS_GPIO_REGISTER
1393 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1394 release 2 instruction set.
1396 config CPU_MIPS32_R1
1397 bool "MIPS32 Release 1"
1398 depends on SYS_HAS_CPU_MIPS32_R1
1399 select CPU_HAS_PREFETCH
1400 select CPU_SUPPORTS_32BIT_KERNEL
1401 select CPU_SUPPORTS_HIGHMEM
1403 Choose this option to build a kernel for release 1 or later of the
1404 MIPS32 architecture. Most modern embedded systems with a 32-bit
1405 MIPS processor are based on a MIPS32 processor. If you know the
1406 specific type of processor in your system, choose those that one
1407 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1408 Release 2 of the MIPS32 architecture is available since several
1409 years so chances are you even have a MIPS32 Release 2 processor
1410 in which case you should choose CPU_MIPS32_R2 instead for better
1413 config CPU_MIPS32_R2
1414 bool "MIPS32 Release 2"
1415 depends on SYS_HAS_CPU_MIPS32_R2
1416 select CPU_HAS_PREFETCH
1417 select CPU_SUPPORTS_32BIT_KERNEL
1418 select CPU_SUPPORTS_HIGHMEM
1419 select CPU_SUPPORTS_MSA
1422 Choose this option to build a kernel for release 2 or later of the
1423 MIPS32 architecture. Most modern embedded systems with a 32-bit
1424 MIPS processor are based on a MIPS32 processor. If you know the
1425 specific type of processor in your system, choose those that one
1426 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1428 config CPU_MIPS32_R6
1429 bool "MIPS32 Release 6"
1430 depends on SYS_HAS_CPU_MIPS32_R6
1431 select CPU_HAS_PREFETCH
1432 select CPU_SUPPORTS_32BIT_KERNEL
1433 select CPU_SUPPORTS_HIGHMEM
1434 select CPU_SUPPORTS_MSA
1437 select MIPS_O32_FP64_SUPPORT
1439 Choose this option to build a kernel for release 6 or later of the
1440 MIPS32 architecture. New MIPS processors, starting with the Warrior
1441 family, are based on a MIPS32r6 processor. If you own an older
1442 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1444 config CPU_MIPS64_R1
1445 bool "MIPS64 Release 1"
1446 depends on SYS_HAS_CPU_MIPS64_R1
1447 select CPU_HAS_PREFETCH
1448 select CPU_SUPPORTS_32BIT_KERNEL
1449 select CPU_SUPPORTS_64BIT_KERNEL
1450 select CPU_SUPPORTS_HIGHMEM
1451 select CPU_SUPPORTS_HUGEPAGES
1453 Choose this option to build a kernel for release 1 or later of the
1454 MIPS64 architecture. Many modern embedded systems with a 64-bit
1455 MIPS processor are based on a MIPS64 processor. If you know the
1456 specific type of processor in your system, choose those that one
1457 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1458 Release 2 of the MIPS64 architecture is available since several
1459 years so chances are you even have a MIPS64 Release 2 processor
1460 in which case you should choose CPU_MIPS64_R2 instead for better
1463 config CPU_MIPS64_R2
1464 bool "MIPS64 Release 2"
1465 depends on SYS_HAS_CPU_MIPS64_R2
1466 select CPU_HAS_PREFETCH
1467 select CPU_SUPPORTS_32BIT_KERNEL
1468 select CPU_SUPPORTS_64BIT_KERNEL
1469 select CPU_SUPPORTS_HIGHMEM
1470 select CPU_SUPPORTS_HUGEPAGES
1471 select CPU_SUPPORTS_MSA
1473 Choose this option to build a kernel for release 2 or later of the
1474 MIPS64 architecture. Many modern embedded systems with a 64-bit
1475 MIPS processor are based on a MIPS64 processor. If you know the
1476 specific type of processor in your system, choose those that one
1477 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1479 config CPU_MIPS64_R6
1480 bool "MIPS64 Release 6"
1481 depends on SYS_HAS_CPU_MIPS64_R6
1482 select CPU_HAS_PREFETCH
1483 select CPU_SUPPORTS_32BIT_KERNEL
1484 select CPU_SUPPORTS_64BIT_KERNEL
1485 select CPU_SUPPORTS_HIGHMEM
1486 select CPU_SUPPORTS_MSA
1488 select MIPS_O32_FP64_SUPPORT if MIPS32_O32
1490 Choose this option to build a kernel for release 6 or later of the
1491 MIPS64 architecture. New MIPS processors, starting with the Warrior
1492 family, are based on a MIPS64r6 processor. If you own an older
1493 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1497 depends on SYS_HAS_CPU_R3000
1499 select CPU_SUPPORTS_32BIT_KERNEL
1500 select CPU_SUPPORTS_HIGHMEM
1502 Please make sure to pick the right CPU type. Linux/MIPS is not
1503 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1504 *not* work on R4000 machines and vice versa. However, since most
1505 of the supported machines have an R4000 (or similar) CPU, R4x00
1506 might be a safe bet. If the resulting kernel does not work,
1507 try to recompile with R3000.
1511 depends on SYS_HAS_CPU_TX39XX
1512 select CPU_SUPPORTS_32BIT_KERNEL
1516 depends on SYS_HAS_CPU_VR41XX
1517 select CPU_SUPPORTS_32BIT_KERNEL
1518 select CPU_SUPPORTS_64BIT_KERNEL
1520 The options selects support for the NEC VR4100 series of processors.
1521 Only choose this option if you have one of these processors as a
1522 kernel built with this option will not run on any other type of
1523 processor or vice versa.
1527 depends on SYS_HAS_CPU_R4300
1528 select CPU_SUPPORTS_32BIT_KERNEL
1529 select CPU_SUPPORTS_64BIT_KERNEL
1531 MIPS Technologies R4300-series processors.
1535 depends on SYS_HAS_CPU_R4X00
1536 select CPU_SUPPORTS_32BIT_KERNEL
1537 select CPU_SUPPORTS_64BIT_KERNEL
1538 select CPU_SUPPORTS_HUGEPAGES
1540 MIPS Technologies R4000-series processors other than 4300, including
1541 the R4000, R4400, R4600, and 4700.
1545 depends on SYS_HAS_CPU_TX49XX
1546 select CPU_HAS_PREFETCH
1547 select CPU_SUPPORTS_32BIT_KERNEL
1548 select CPU_SUPPORTS_64BIT_KERNEL
1549 select CPU_SUPPORTS_HUGEPAGES
1553 depends on SYS_HAS_CPU_R5000
1554 select CPU_SUPPORTS_32BIT_KERNEL
1555 select CPU_SUPPORTS_64BIT_KERNEL
1556 select CPU_SUPPORTS_HUGEPAGES
1558 MIPS Technologies R5000-series processors other than the Nevada.
1562 depends on SYS_HAS_CPU_R5432
1563 select CPU_SUPPORTS_32BIT_KERNEL
1564 select CPU_SUPPORTS_64BIT_KERNEL
1565 select CPU_SUPPORTS_HUGEPAGES
1569 depends on SYS_HAS_CPU_R5500
1570 select CPU_SUPPORTS_32BIT_KERNEL
1571 select CPU_SUPPORTS_64BIT_KERNEL
1572 select CPU_SUPPORTS_HUGEPAGES
1574 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1579 depends on SYS_HAS_CPU_R6000
1580 select CPU_SUPPORTS_32BIT_KERNEL
1582 MIPS Technologies R6000 and R6000A series processors. Note these
1583 processors are extremely rare and the support for them is incomplete.
1587 depends on SYS_HAS_CPU_NEVADA
1588 select CPU_SUPPORTS_32BIT_KERNEL
1589 select CPU_SUPPORTS_64BIT_KERNEL
1590 select CPU_SUPPORTS_HUGEPAGES
1592 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1596 depends on SYS_HAS_CPU_R8000
1597 select CPU_HAS_PREFETCH
1598 select CPU_SUPPORTS_64BIT_KERNEL
1600 MIPS Technologies R8000 processors. Note these processors are
1601 uncommon and the support for them is incomplete.
1605 depends on SYS_HAS_CPU_R10000
1606 select CPU_HAS_PREFETCH
1607 select CPU_SUPPORTS_32BIT_KERNEL
1608 select CPU_SUPPORTS_64BIT_KERNEL
1609 select CPU_SUPPORTS_HIGHMEM
1610 select CPU_SUPPORTS_HUGEPAGES
1612 MIPS Technologies R10000-series processors.
1616 depends on SYS_HAS_CPU_RM7000
1617 select CPU_HAS_PREFETCH
1618 select CPU_SUPPORTS_32BIT_KERNEL
1619 select CPU_SUPPORTS_64BIT_KERNEL
1620 select CPU_SUPPORTS_HIGHMEM
1621 select CPU_SUPPORTS_HUGEPAGES
1625 depends on SYS_HAS_CPU_SB1
1626 select CPU_SUPPORTS_32BIT_KERNEL
1627 select CPU_SUPPORTS_64BIT_KERNEL
1628 select CPU_SUPPORTS_HIGHMEM
1629 select CPU_SUPPORTS_HUGEPAGES
1630 select WEAK_ORDERING
1632 config CPU_CAVIUM_OCTEON
1633 bool "Cavium Octeon processor"
1634 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1635 select CPU_HAS_PREFETCH
1636 select CPU_SUPPORTS_64BIT_KERNEL
1637 select WEAK_ORDERING
1638 select CPU_SUPPORTS_HIGHMEM
1639 select CPU_SUPPORTS_HUGEPAGES
1640 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1641 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1642 select MIPS_L1_CACHE_SHIFT_7
1644 The Cavium Octeon processor is a highly integrated chip containing
1645 many ethernet hardware widgets for networking tasks. The processor
1646 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1647 Full details can be found at http://www.caviumnetworks.com.
1650 bool "Broadcom BMIPS"
1651 depends on SYS_HAS_CPU_BMIPS
1653 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1654 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1655 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1656 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1657 select CPU_SUPPORTS_32BIT_KERNEL
1658 select DMA_NONCOHERENT
1660 select SWAP_IO_SPACE
1661 select WEAK_ORDERING
1662 select CPU_SUPPORTS_HIGHMEM
1663 select CPU_HAS_PREFETCH
1665 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1668 bool "Netlogic XLR SoC"
1669 depends on SYS_HAS_CPU_XLR
1670 select CPU_SUPPORTS_32BIT_KERNEL
1671 select CPU_SUPPORTS_64BIT_KERNEL
1672 select CPU_SUPPORTS_HIGHMEM
1673 select CPU_SUPPORTS_HUGEPAGES
1674 select WEAK_ORDERING
1675 select WEAK_REORDERING_BEYOND_LLSC
1677 Netlogic Microsystems XLR/XLS processors.
1680 bool "Netlogic XLP SoC"
1681 depends on SYS_HAS_CPU_XLP
1682 select CPU_SUPPORTS_32BIT_KERNEL
1683 select CPU_SUPPORTS_64BIT_KERNEL
1684 select CPU_SUPPORTS_HIGHMEM
1685 select WEAK_ORDERING
1686 select WEAK_REORDERING_BEYOND_LLSC
1687 select CPU_HAS_PREFETCH
1689 select CPU_SUPPORTS_HUGEPAGES
1691 Netlogic Microsystems XLP processors.
1694 config CPU_MIPS32_3_5_FEATURES
1695 bool "MIPS32 Release 3.5 Features"
1696 depends on SYS_HAS_CPU_MIPS32_R3_5
1697 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1699 Choose this option to build a kernel for release 2 or later of the
1700 MIPS32 architecture including features from the 3.5 release such as
1701 support for Enhanced Virtual Addressing (EVA).
1703 config CPU_MIPS32_3_5_EVA
1704 bool "Enhanced Virtual Addressing (EVA)"
1705 depends on CPU_MIPS32_3_5_FEATURES
1709 Choose this option if you want to enable the Enhanced Virtual
1710 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1711 One of its primary benefits is an increase in the maximum size
1712 of lowmem (up to 3GB). If unsure, say 'N' here.
1714 config CPU_MIPS32_R5_FEATURES
1715 bool "MIPS32 Release 5 Features"
1716 depends on SYS_HAS_CPU_MIPS32_R5
1717 depends on CPU_MIPS32_R2
1719 Choose this option to build a kernel for release 2 or later of the
1720 MIPS32 architecture including features from release 5 such as
1721 support for Extended Physical Addressing (XPA).
1723 config CPU_MIPS32_R5_XPA
1724 bool "Extended Physical Addressing (XPA)"
1725 depends on CPU_MIPS32_R5_FEATURES
1727 depends on !PAGE_SIZE_4KB
1728 depends on SYS_SUPPORTS_HIGHMEM
1731 select ARCH_PHYS_ADDR_T_64BIT
1734 Choose this option if you want to enable the Extended Physical
1735 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1736 benefit is to increase physical addressing equal to or greater
1737 than 40 bits. Note that this has the side effect of turning on
1738 64-bit addressing which in turn makes the PTEs 64-bit in size.
1739 If unsure, say 'N' here.
1742 config CPU_NOP_WORKAROUNDS
1745 config CPU_JUMP_WORKAROUNDS
1748 config CPU_LOONGSON2F_WORKAROUNDS
1749 bool "Loongson 2F Workarounds"
1751 select CPU_NOP_WORKAROUNDS
1752 select CPU_JUMP_WORKAROUNDS
1754 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1755 require workarounds. Without workarounds the system may hang
1756 unexpectedly. For more information please refer to the gas
1757 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1759 Loongson 2F03 and later have fixed these issues and no workarounds
1760 are needed. The workarounds have no significant side effect on them
1761 but may decrease the performance of the system so this option should
1762 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1765 If unsure, please say Y.
1766 endif # CPU_LOONGSON2F
1768 config SYS_SUPPORTS_ZBOOT
1770 select HAVE_KERNEL_GZIP
1771 select HAVE_KERNEL_BZIP2
1772 select HAVE_KERNEL_LZ4
1773 select HAVE_KERNEL_LZMA
1774 select HAVE_KERNEL_LZO
1775 select HAVE_KERNEL_XZ
1777 config SYS_SUPPORTS_ZBOOT_UART16550
1779 select SYS_SUPPORTS_ZBOOT
1781 config SYS_SUPPORTS_ZBOOT_UART_PROM
1783 select SYS_SUPPORTS_ZBOOT
1785 config CPU_LOONGSON2
1787 select CPU_SUPPORTS_32BIT_KERNEL
1788 select CPU_SUPPORTS_64BIT_KERNEL
1789 select CPU_SUPPORTS_HIGHMEM
1790 select CPU_SUPPORTS_HUGEPAGES
1792 config CPU_LOONGSON1
1796 select CPU_HAS_PREFETCH
1797 select CPU_SUPPORTS_32BIT_KERNEL
1798 select CPU_SUPPORTS_HIGHMEM
1799 select CPU_SUPPORTS_CPUFREQ
1801 config CPU_BMIPS32_3300
1802 select SMP_UP if SMP
1805 config CPU_BMIPS4350
1807 select SYS_SUPPORTS_SMP
1808 select SYS_SUPPORTS_HOTPLUG_CPU
1810 config CPU_BMIPS4380
1812 select MIPS_L1_CACHE_SHIFT_6
1813 select SYS_SUPPORTS_SMP
1814 select SYS_SUPPORTS_HOTPLUG_CPU
1816 config CPU_BMIPS5000
1818 select MIPS_CPU_SCACHE
1819 select MIPS_L1_CACHE_SHIFT_7
1820 select SYS_SUPPORTS_SMP
1821 select SYS_SUPPORTS_HOTPLUG_CPU
1823 config SYS_HAS_CPU_LOONGSON3
1825 select CPU_SUPPORTS_CPUFREQ
1827 config SYS_HAS_CPU_LOONGSON2E
1830 config SYS_HAS_CPU_LOONGSON2F
1832 select CPU_SUPPORTS_CPUFREQ
1833 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1834 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1836 config SYS_HAS_CPU_LOONGSON1B
1839 config SYS_HAS_CPU_MIPS32_R1
1842 config SYS_HAS_CPU_MIPS32_R2
1845 config SYS_HAS_CPU_MIPS32_R3_5
1848 config SYS_HAS_CPU_MIPS32_R5
1851 config SYS_HAS_CPU_MIPS32_R6
1854 config SYS_HAS_CPU_MIPS64_R1
1857 config SYS_HAS_CPU_MIPS64_R2
1860 config SYS_HAS_CPU_MIPS64_R6
1863 config SYS_HAS_CPU_R3000
1866 config SYS_HAS_CPU_TX39XX
1869 config SYS_HAS_CPU_VR41XX
1872 config SYS_HAS_CPU_R4300
1875 config SYS_HAS_CPU_R4X00
1878 config SYS_HAS_CPU_TX49XX
1881 config SYS_HAS_CPU_R5000
1884 config SYS_HAS_CPU_R5432
1887 config SYS_HAS_CPU_R5500
1890 config SYS_HAS_CPU_R6000
1893 config SYS_HAS_CPU_NEVADA
1896 config SYS_HAS_CPU_R8000
1899 config SYS_HAS_CPU_R10000
1902 config SYS_HAS_CPU_RM7000
1905 config SYS_HAS_CPU_SB1
1908 config SYS_HAS_CPU_CAVIUM_OCTEON
1911 config SYS_HAS_CPU_BMIPS
1914 config SYS_HAS_CPU_BMIPS32_3300
1916 select SYS_HAS_CPU_BMIPS
1918 config SYS_HAS_CPU_BMIPS4350
1920 select SYS_HAS_CPU_BMIPS
1922 config SYS_HAS_CPU_BMIPS4380
1924 select SYS_HAS_CPU_BMIPS
1926 config SYS_HAS_CPU_BMIPS5000
1928 select SYS_HAS_CPU_BMIPS
1930 config SYS_HAS_CPU_XLR
1933 config SYS_HAS_CPU_XLP
1936 config MIPS_MALTA_PM
1937 depends on MIPS_MALTA
1943 # CPU may reorder R->R, R->W, W->R, W->W
1944 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1946 config WEAK_ORDERING
1950 # CPU may reorder reads and writes beyond LL/SC
1951 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1953 config WEAK_REORDERING_BEYOND_LLSC
1958 # These two indicate any level of the MIPS32 and MIPS64 architecture
1962 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1966 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1969 # These two indicate the revision of the architecture, either Release 1 or Release 2
1973 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1977 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1982 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1991 config SYS_SUPPORTS_32BIT_KERNEL
1993 config SYS_SUPPORTS_64BIT_KERNEL
1995 config CPU_SUPPORTS_32BIT_KERNEL
1997 config CPU_SUPPORTS_64BIT_KERNEL
1999 config CPU_SUPPORTS_CPUFREQ
2001 config CPU_SUPPORTS_ADDRWINCFG
2003 config CPU_SUPPORTS_HUGEPAGES
2005 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2007 config MIPS_PGD_C0_CONTEXT
2009 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
2012 # Set to y for ptrace access to watch registers.
2014 config HARDWARE_WATCHPOINTS
2016 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2021 prompt "Kernel code model"
2023 You should only select this option if you have a workload that
2024 actually benefits from 64-bit processing or if your machine has
2025 large memory. You will only be presented a single option in this
2026 menu if your system does not support both 32-bit and 64-bit kernels.
2029 bool "32-bit kernel"
2030 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2033 Select this option if you want to build a 32-bit kernel.
2036 bool "64-bit kernel"
2037 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2039 Select this option if you want to build a 64-bit kernel.
2044 bool "KVM Guest Kernel"
2045 depends on BROKEN_ON_SMP
2047 Select this option if building a guest kernel for KVM (Trap & Emulate)
2050 config KVM_GUEST_TIMER_FREQ
2051 int "Count/Compare Timer Frequency (MHz)"
2052 depends on KVM_GUEST
2055 Set this to non-zero if building a guest kernel for KVM to skip RTC
2056 emulation when determining guest CPU Frequency. Instead, the guest's
2057 timer frequency is specified directly.
2060 prompt "Kernel page size"
2061 default PAGE_SIZE_4KB
2063 config PAGE_SIZE_4KB
2065 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2067 This option select the standard 4kB Linux page size. On some
2068 R3000-family processors this is the only available page size. Using
2069 4kB page size will minimize memory consumption and is therefore
2070 recommended for low memory systems.
2072 config PAGE_SIZE_8KB
2074 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2076 Using 8kB page size will result in higher performance kernel at
2077 the price of higher memory consumption. This option is available
2078 only on R8000 and cnMIPS processors. Note that you will need a
2079 suitable Linux distribution to support this.
2081 config PAGE_SIZE_16KB
2083 depends on !CPU_R3000 && !CPU_TX39XX
2085 Using 16kB page size will result in higher performance kernel at
2086 the price of higher memory consumption. This option is available on
2087 all non-R3000 family processors. Note that you will need a suitable
2088 Linux distribution to support this.
2090 config PAGE_SIZE_32KB
2092 depends on CPU_CAVIUM_OCTEON
2094 Using 32kB page size will result in higher performance kernel at
2095 the price of higher memory consumption. This option is available
2096 only on cnMIPS cores. Note that you will need a suitable Linux
2097 distribution to support this.
2099 config PAGE_SIZE_64KB
2101 depends on !CPU_R3000 && !CPU_TX39XX && !CPU_R6000
2103 Using 64kB page size will result in higher performance kernel at
2104 the price of higher memory consumption. This option is available on
2105 all non-R3000 family processor. Not that at the time of this
2106 writing this option is still high experimental.
2110 config FORCE_MAX_ZONEORDER
2111 int "Maximum zone order"
2112 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2113 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2114 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2115 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2116 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2117 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2121 The kernel memory allocator divides physically contiguous memory
2122 blocks into "zones", where each zone is a power of two number of
2123 pages. This option selects the largest power of two that the kernel
2124 keeps in the memory allocator. If you need to allocate very large
2125 blocks of physically contiguous memory, then you may need to
2126 increase this value.
2128 This config option is actually maximum order plus one. For example,
2129 a value of 11 means that the largest free memory block is 2^10 pages.
2131 The page size is not necessarily 4KB. Keep this in mind
2132 when choosing a value for this option.
2137 config IP22_CPU_SCACHE
2142 # Support for a MIPS32 / MIPS64 style S-caches
2144 config MIPS_CPU_SCACHE
2148 config R5000_CPU_SCACHE
2152 config RM7000_CPU_SCACHE
2156 config SIBYTE_DMA_PAGEOPS
2157 bool "Use DMA to clear/copy pages"
2160 Instead of using the CPU to zero and copy pages, use a Data Mover
2161 channel. These DMA channels are otherwise unused by the standard
2162 SiByte Linux port. Seems to give a small performance benefit.
2164 config CPU_HAS_PREFETCH
2167 config CPU_GENERIC_DUMP_TLB
2169 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2173 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2175 config CPU_R4K_CACHE_TLB
2177 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2180 bool "MIPS MT SMP support (1 TC on each available VPE)"
2181 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2182 select CPU_MIPSR2_IRQ_VI
2183 select CPU_MIPSR2_IRQ_EI
2188 select SYS_SUPPORTS_SMP
2189 select SYS_SUPPORTS_SCHED_SMT
2190 select MIPS_PERF_SHARED_TC_COUNTERS
2192 This is a kernel model which is known as SMVP. This is supported
2193 on cores with the MT ASE and uses the available VPEs to implement
2194 virtual processors which supports SMP. This is equivalent to the
2195 Intel Hyperthreading feature. For further information go to
2196 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2202 bool "SMT (multithreading) scheduler support"
2203 depends on SYS_SUPPORTS_SCHED_SMT
2206 SMT scheduler support improves the CPU scheduler's decision making
2207 when dealing with MIPS MT enabled cores at a cost of slightly
2208 increased overhead in some places. If unsure say N here.
2210 config SYS_SUPPORTS_SCHED_SMT
2213 config SYS_SUPPORTS_MULTITHREADING
2216 config MIPS_MT_FPAFF
2217 bool "Dynamic FPU affinity for FP-intensive threads"
2219 depends on MIPS_MT_SMP
2221 config MIPSR2_TO_R6_EMULATOR
2222 bool "MIPS R2-to-R6 emulator"
2223 depends on CPU_MIPSR6 && !SMP
2226 Choose this option if you want to run non-R6 MIPS userland code.
2227 Even if you say 'Y' here, the emulator will still be disabled by
2228 default. You can enable it using the 'mipsr2emu' kernel option.
2229 The only reason this is a build-time option is to save ~14K from the
2231 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2232 depends on SMP && CPU_MIPSR6
2234 config MIPS_VPE_LOADER
2235 bool "VPE loader support."
2236 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2237 select CPU_MIPSR2_IRQ_VI
2238 select CPU_MIPSR2_IRQ_EI
2241 Includes a loader for loading an elf relocatable object
2242 onto another VPE and running it.
2244 config MIPS_VPE_LOADER_CMP
2247 depends on MIPS_VPE_LOADER && MIPS_CMP
2249 config MIPS_VPE_LOADER_MT
2252 depends on MIPS_VPE_LOADER && !MIPS_CMP
2254 config MIPS_VPE_LOADER_TOM
2255 bool "Load VPE program into memory hidden from linux"
2256 depends on MIPS_VPE_LOADER
2259 The loader can use memory that is present but has been hidden from
2260 Linux using the kernel command line option "mem=xxMB". It's up to
2261 you to ensure the amount you put in the option and the space your
2262 program requires is less or equal to the amount physically present.
2264 config MIPS_VPE_APSP_API
2265 bool "Enable support for AP/SP API (RTLX)"
2266 depends on MIPS_VPE_LOADER
2269 config MIPS_VPE_APSP_API_CMP
2272 depends on MIPS_VPE_APSP_API && MIPS_CMP
2274 config MIPS_VPE_APSP_API_MT
2277 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2280 bool "MIPS CMP framework support (DEPRECATED)"
2281 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2284 select SYS_SUPPORTS_SMP
2285 select WEAK_ORDERING
2288 Select this if you are using a bootloader which implements the "CMP
2289 framework" protocol (ie. YAMON) and want your kernel to make use of
2290 its ability to start secondary CPUs.
2292 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2296 bool "MIPS Coherent Processing System support"
2297 depends on SYS_SUPPORTS_MIPS_CPS
2300 select MIPS_CPS_PM if HOTPLUG_CPU
2302 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2303 select SYS_SUPPORTS_HOTPLUG_CPU
2304 select SYS_SUPPORTS_SMP
2305 select WEAK_ORDERING
2307 Select this if you wish to run an SMP kernel across multiple cores
2308 within a MIPS Coherent Processing System. When this option is
2309 enabled the kernel will probe for other cores and boot them with
2310 no external assistance. It is safe to enable this when hardware
2311 support is unavailable.
2324 config SB1_PASS_2_WORKAROUNDS
2326 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2329 config SB1_PASS_2_1_WORKAROUNDS
2331 depends on CPU_SB1 && CPU_SB1_PASS_2
2335 config ARCH_PHYS_ADDR_T_64BIT
2339 prompt "SmartMIPS or microMIPS ASE support"
2341 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2344 Select this if you want neither microMIPS nor SmartMIPS support
2346 config CPU_HAS_SMARTMIPS
2347 depends on SYS_SUPPORTS_SMARTMIPS
2350 SmartMIPS is a extension of the MIPS32 architecture aimed at
2351 increased security at both hardware and software level for
2352 smartcards. Enabling this option will allow proper use of the
2353 SmartMIPS instructions by Linux applications. However a kernel with
2354 this option will not work on a MIPS core without SmartMIPS core. If
2355 you don't know you probably don't have SmartMIPS and should say N
2358 config CPU_MICROMIPS
2359 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2362 When this option is enabled the kernel will be built using the
2368 bool "Support for the MIPS SIMD Architecture"
2369 depends on CPU_SUPPORTS_MSA
2370 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2372 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2373 and a set of SIMD instructions to operate on them. When this option
2374 is enabled the kernel will support allocating & switching MSA
2375 vector register contexts. If you know that your kernel will only be
2376 running on CPUs which do not support MSA or that your userland will
2377 not be making use of it then you may wish to say N here to reduce
2378 the size & complexity of your kernel.
2389 # Vectored interrupt mode is an R2 feature
2391 config CPU_MIPSR2_IRQ_VI
2395 # Extended interrupt mode is an R2 feature
2397 config CPU_MIPSR2_IRQ_EI
2402 depends on !CPU_R3000
2408 config CPU_DADDI_WORKAROUNDS
2411 config CPU_R4000_WORKAROUNDS
2413 select CPU_R4400_WORKAROUNDS
2415 config CPU_R4400_WORKAROUNDS
2419 # - Highmem only makes sense for the 32-bit kernel.
2420 # - The current highmem code will only work properly on physically indexed
2421 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2422 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2423 # moment we protect the user and offer the highmem option only on machines
2424 # where it's known to be safe. This will not offer highmem on a few systems
2425 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2426 # indexed CPUs but we're playing safe.
2427 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2428 # know they might have memory configurations that could make use of highmem
2432 bool "High Memory Support"
2433 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2435 config CPU_SUPPORTS_HIGHMEM
2438 config SYS_SUPPORTS_HIGHMEM
2441 config SYS_SUPPORTS_SMARTMIPS
2444 config SYS_SUPPORTS_MICROMIPS
2447 config SYS_SUPPORTS_MIPS16
2450 This option must be set if a kernel might be executed on a MIPS16-
2451 enabled CPU even if MIPS16 is not actually being used. In other
2452 words, it makes the kernel MIPS16-tolerant.
2454 config CPU_SUPPORTS_MSA
2457 config ARCH_FLATMEM_ENABLE
2459 depends on !NUMA && !CPU_LOONGSON2
2461 config ARCH_DISCONTIGMEM_ENABLE
2463 default y if SGI_IP27
2465 Say Y to support efficient handling of discontiguous physical memory,
2466 for architectures which are either NUMA (Non-Uniform Memory Access)
2467 or have huge holes in the physical address space for other reasons.
2468 See <file:Documentation/vm/numa> for more.
2470 config ARCH_SPARSEMEM_ENABLE
2472 select SPARSEMEM_STATIC
2476 depends on SYS_SUPPORTS_NUMA
2478 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2479 Access). This option improves performance on systems with more
2480 than two nodes; on two node systems it is generally better to
2481 leave it disabled; on single node systems disable this option
2484 config SYS_SUPPORTS_NUMA
2488 bool "Relocatable kernel"
2489 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6)
2491 This builds a kernel image that retains relocation information
2492 so it can be loaded someplace besides the default 1MB.
2493 The relocations make the kernel binary about 15% larger,
2494 but are discarded at runtime
2496 config RELOCATION_TABLE_SIZE
2497 hex "Relocation table size"
2498 depends on RELOCATABLE
2499 range 0x0 0x01000000
2500 default "0x00100000"
2502 A table of relocation data will be appended to the kernel binary
2503 and parsed at boot to fix up the relocated kernel.
2505 This option allows the amount of space reserved for the table to be
2506 adjusted, although the default of 1Mb should be ok in most cases.
2508 The build will fail and a valid size suggested if this is too small.
2510 If unsure, leave at the default value.
2512 config RANDOMIZE_BASE
2513 bool "Randomize the address of the kernel image"
2514 depends on RELOCATABLE
2516 Randomizes the physical and virtual address at which the
2517 kernel image is loaded, as a security feature that
2518 deters exploit attempts relying on knowledge of the location
2519 of kernel internals.
2521 Entropy is generated using any coprocessor 0 registers available.
2523 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2527 config RANDOMIZE_BASE_MAX_OFFSET
2528 hex "Maximum kASLR offset" if EXPERT
2529 depends on RANDOMIZE_BASE
2530 range 0x0 0x40000000 if EVA || 64BIT
2531 range 0x0 0x08000000
2532 default "0x01000000"
2534 When kASLR is active, this provides the maximum offset that will
2535 be applied to the kernel image. It should be set according to the
2536 amount of physical RAM available in the target system minus
2537 PHYSICAL_START and must be a power of 2.
2539 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2540 EVA or 64-bit. The default is 16Mb.
2545 depends on NEED_MULTIPLE_NODES
2547 config HW_PERF_EVENTS
2548 bool "Enable hardware performance counter support for perf events"
2549 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2552 Enable hardware performance counter support for perf events. If
2553 disabled, perf events will use software events only.
2558 bool "Multi-Processing support"
2559 depends on SYS_SUPPORTS_SMP
2561 This enables support for systems with more than one CPU. If you have
2562 a system with only one CPU, say N. If you have a system with more
2563 than one CPU, say Y.
2565 If you say N here, the kernel will run on uni- and multiprocessor
2566 machines, but will use only one CPU of a multiprocessor machine. If
2567 you say Y here, the kernel will run on many, but not all,
2568 uniprocessor machines. On a uniprocessor machine, the kernel
2569 will run faster if you say N here.
2571 People using multiprocessor machines who say Y here should also say
2572 Y to "Enhanced Real Time Clock Support", below.
2574 See also the SMP-HOWTO available at
2575 <http://www.tldp.org/docs.html#howto>.
2577 If you don't know what to do here, say N.
2582 config SYS_SUPPORTS_MIPS_CMP
2585 config SYS_SUPPORTS_MIPS_CPS
2588 config SYS_SUPPORTS_SMP
2591 config NR_CPUS_DEFAULT_4
2594 config NR_CPUS_DEFAULT_8
2597 config NR_CPUS_DEFAULT_16
2600 config NR_CPUS_DEFAULT_32
2603 config NR_CPUS_DEFAULT_64
2607 int "Maximum number of CPUs (2-256)"
2610 default "4" if NR_CPUS_DEFAULT_4
2611 default "8" if NR_CPUS_DEFAULT_8
2612 default "16" if NR_CPUS_DEFAULT_16
2613 default "32" if NR_CPUS_DEFAULT_32
2614 default "64" if NR_CPUS_DEFAULT_64
2616 This allows you to specify the maximum number of CPUs which this
2617 kernel will support. The maximum supported value is 32 for 32-bit
2618 kernel and 64 for 64-bit kernels; the minimum value which makes
2619 sense is 1 for Qemu (useful only for kernel debugging purposes)
2620 and 2 for all others.
2622 This is purely to save memory - each supported CPU adds
2623 approximately eight kilobytes to the kernel image. For best
2624 performance should round up your number of processors to the next
2627 config MIPS_PERF_SHARED_TC_COUNTERS
2631 # Timer Interrupt Frequency Configuration
2635 prompt "Timer frequency"
2638 Allows the configuration of the timer frequency.
2641 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2644 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2647 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2650 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2653 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2656 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2659 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2662 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2666 config SYS_SUPPORTS_24HZ
2669 config SYS_SUPPORTS_48HZ
2672 config SYS_SUPPORTS_100HZ
2675 config SYS_SUPPORTS_128HZ
2678 config SYS_SUPPORTS_250HZ
2681 config SYS_SUPPORTS_256HZ
2684 config SYS_SUPPORTS_1000HZ
2687 config SYS_SUPPORTS_1024HZ
2690 config SYS_SUPPORTS_ARBIT_HZ
2692 default y if !SYS_SUPPORTS_24HZ && \
2693 !SYS_SUPPORTS_48HZ && \
2694 !SYS_SUPPORTS_100HZ && \
2695 !SYS_SUPPORTS_128HZ && \
2696 !SYS_SUPPORTS_250HZ && \
2697 !SYS_SUPPORTS_256HZ && \
2698 !SYS_SUPPORTS_1000HZ && \
2699 !SYS_SUPPORTS_1024HZ
2705 default 100 if HZ_100
2706 default 128 if HZ_128
2707 default 250 if HZ_250
2708 default 256 if HZ_256
2709 default 1000 if HZ_1000
2710 default 1024 if HZ_1024
2713 def_bool HIGH_RES_TIMERS
2715 source "kernel/Kconfig.preempt"
2718 bool "Kexec system call"
2721 kexec is a system call that implements the ability to shutdown your
2722 current kernel, and to start another kernel. It is like a reboot
2723 but it is independent of the system firmware. And like a reboot
2724 you can start any kernel with it, not just Linux.
2726 The name comes from the similarity to the exec system call.
2728 It is an ongoing process to be certain the hardware in a machine
2729 is properly shutdown, so do not be surprised if this code does not
2730 initially work for you. As of this writing the exact hardware
2731 interface is strongly in flux, so no good recommendation can be
2735 bool "Kernel crash dumps"
2737 Generate crash dump after being started by kexec.
2738 This should be normally only set in special crash dump kernels
2739 which are loaded in the main kernel with kexec-tools into
2740 a specially reserved region and then later executed after
2741 a crash by kdump/kexec. The crash dump kernel must be compiled
2742 to a memory address not used by the main kernel or firmware using
2745 config PHYSICAL_START
2746 hex "Physical address where the kernel is loaded"
2747 default "0xffffffff84000000" if 64BIT
2748 default "0x84000000" if 32BIT
2749 depends on CRASH_DUMP
2751 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2752 If you plan to use kernel for capturing the crash dump change
2753 this value to start of the reserved region (the "X" value as
2754 specified in the "crashkernel=YM@XM" command line boot parameter
2755 passed to the panic-ed kernel).
2758 bool "Enable seccomp to safely compute untrusted bytecode"
2762 This kernel feature is useful for number crunching applications
2763 that may need to compute untrusted bytecode during their
2764 execution. By using pipes or other transports made available to
2765 the process as file descriptors supporting the read/write
2766 syscalls, it's possible to isolate those applications in
2767 their own address space using seccomp. Once seccomp is
2768 enabled via /proc/<pid>/seccomp, it cannot be disabled
2769 and the task is only allowed to execute a few safe syscalls
2770 defined by each seccomp mode.
2772 If unsure, say Y. Only embedded should say N here.
2774 config MIPS_O32_FP64_SUPPORT
2775 bool "Support for O32 binaries using 64-bit FP"
2776 depends on 32BIT || MIPS32_O32
2778 When this is enabled, the kernel will support use of 64-bit floating
2779 point registers with binaries using the O32 ABI along with the
2780 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2781 32-bit MIPS systems this support is at the cost of increasing the
2782 size and complexity of the compiled FPU emulator. Thus if you are
2783 running a MIPS32 system and know that none of your userland binaries
2784 will require 64-bit floating point, you may wish to reduce the size
2785 of your kernel & potentially improve FP emulation performance by
2788 Although binutils currently supports use of this flag the details
2789 concerning its effect upon the O32 ABI in userland are still being
2790 worked on. In order to avoid userland becoming dependant upon current
2791 behaviour before the details have been finalised, this option should
2792 be considered experimental and only enabled by those working upon
2800 select OF_EARLY_FLATTREE
2807 prompt "Kernel appended dtb support" if USE_OF
2808 default MIPS_NO_APPENDED_DTB
2810 config MIPS_NO_APPENDED_DTB
2813 Do not enable appended dtb support.
2815 config MIPS_ELF_APPENDED_DTB
2818 With this option, the boot code will look for a device tree binary
2819 DTB) included in the vmlinux ELF section .appended_dtb. By default
2820 it is empty and the DTB can be appended using binutils command
2823 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2825 This is meant as a backward compatiblity convenience for those
2826 systems with a bootloader that can't be upgraded to accommodate
2827 the documented boot protocol using a device tree.
2829 config MIPS_RAW_APPENDED_DTB
2832 With this option, the boot code will look for a device tree binary
2833 DTB) appended to raw vmlinux.bin (without decompressor).
2834 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2836 This is meant as a backward compatibility convenience for those
2837 systems with a bootloader that can't be upgraded to accommodate
2838 the documented boot protocol using a device tree.
2840 Beware that there is very little in terms of protection against
2841 this option being confused by leftover garbage in memory that might
2842 look like a DTB header after a reboot if no actual DTB is appended
2843 to vmlinux.bin. Do not leave this option active in a production kernel
2844 if you don't intend to always append a DTB.
2846 config MIPS_ZBOOT_APPENDED_DTB
2848 depends on SYS_SUPPORTS_ZBOOT
2850 With this option, the boot code will look for a device tree binary
2851 DTB) appended to raw vmlinuz.bin (with decompressor).
2852 (e.g. cat vmlinuz.bin <filename>.dtb > vmlinuz_w_dtb).
2854 This is meant as a backward compatibility convenience for those
2855 systems with a bootloader that can't be upgraded to accommodate
2856 the documented boot protocol using a device tree.
2858 Beware that there is very little in terms of protection against
2859 this option being confused by leftover garbage in memory that might
2860 look like a DTB header after a reboot if no actual DTB is appended
2861 to vmlinuz.bin. Do not leave this option active in a production kernel
2862 if you don't intend to always append a DTB.
2866 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2867 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2868 !MIPS_MALTA && !MIPS_SEAD3 && \
2870 default MIPS_CMDLINE_FROM_BOOTLOADER
2872 config MIPS_CMDLINE_FROM_DTB
2874 bool "Dtb kernel arguments if available"
2876 config MIPS_CMDLINE_DTB_EXTEND
2878 bool "Extend dtb kernel arguments with bootloader arguments"
2880 config MIPS_CMDLINE_FROM_BOOTLOADER
2881 bool "Bootloader kernel arguments if available"
2886 config LOCKDEP_SUPPORT
2890 config STACKTRACE_SUPPORT
2894 config HAVE_LATENCYTOP_SUPPORT
2898 config PGTABLE_LEVELS
2900 default 3 if 64BIT && !PAGE_SIZE_64KB
2903 source "init/Kconfig"
2905 source "kernel/Kconfig.freezer"
2907 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2915 bool "Support for PCI controller"
2916 depends on HW_HAS_PCI
2918 select NO_GENERIC_PCI_IOPORT_MAP
2920 Find out whether you have a PCI motherboard. PCI is the name of a
2921 bus system, i.e. the way the CPU talks to the other stuff inside
2922 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2926 bool "Support for HT-linked PCI"
2928 depends on CPU_LOONGSON3
2932 Loongson family machines use Hyper-Transport bus for inter-core
2933 connection and device connection. The PCI bus is a subordinate
2934 linked at HT. Choose Y for Loongson-3 based machines.
2939 source "drivers/pci/Kconfig"
2942 # ISA support is now enabled via select. Too many systems still have the one
2943 # or other ISA chip on the board that users don't know about so don't expect
2944 # users to choose the right thing ...
2951 depends on HW_HAS_EISA
2953 select GENERIC_ISA_DMA
2955 The Extended Industry Standard Architecture (EISA) bus was
2956 developed as an open alternative to the IBM MicroChannel bus.
2958 The EISA bus provided some of the features of the IBM MicroChannel
2959 bus while maintaining backward compatibility with cards made for
2960 the older ISA bus. The EISA bus saw limited use between 1988 and
2961 1995 when it was made obsolete by the PCI bus.
2963 Say Y here if you are building a kernel for an EISA-based machine.
2967 source "drivers/eisa/Kconfig"
2970 bool "TURBOchannel support"
2971 depends on MACH_DECSTATION
2973 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2974 processors. TURBOchannel programming specifications are available
2976 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2978 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2979 Linux driver support status is documented at:
2980 <http://www.linux-mips.org/wiki/DECstation>
2990 select MIPS_EXTERNAL_TIMER
2998 source "drivers/pcmcia/Kconfig"
3001 tristate "RapidIO support"
3005 If you say Y here, the kernel will include drivers and
3006 infrastructure code to support RapidIO interconnect devices.
3008 source "drivers/rapidio/Kconfig"
3012 menu "Executable file formats"
3014 source "fs/Kconfig.binfmt"
3019 config MIPS32_COMPAT
3025 config SYSVIPC_COMPAT
3029 bool "Kernel support for o32 binaries"
3031 select ARCH_WANT_OLD_COMPAT_IPC
3033 select MIPS32_COMPAT
3034 select SYSVIPC_COMPAT if SYSVIPC
3036 Select this option if you want to run o32 binaries. These are pure
3037 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3038 existing binaries are in this format.
3043 bool "Kernel support for n32 binaries"
3046 select MIPS32_COMPAT
3047 select SYSVIPC_COMPAT if SYSVIPC
3049 Select this option if you want to run n32 binaries. These are
3050 64-bit binaries using 32-bit quantities for addressing and certain
3051 data that would normally be 64-bit. They are used in special
3058 default y if MIPS32_O32 || MIPS32_N32
3062 menu "Power management options"
3064 config ARCH_HIBERNATION_POSSIBLE
3066 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3068 config ARCH_SUSPEND_POSSIBLE
3070 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3072 source "kernel/power/Kconfig"
3076 config MIPS_EXTERNAL_TIMER
3079 menu "CPU Power Management"
3081 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3082 source "drivers/cpufreq/Kconfig"
3085 source "drivers/cpuidle/Kconfig"
3089 source "net/Kconfig"
3091 source "drivers/Kconfig"
3093 source "drivers/firmware/Kconfig"
3097 source "arch/mips/Kconfig.debug"
3099 source "security/Kconfig"
3101 source "crypto/Kconfig"
3103 source "lib/Kconfig"
3105 source "arch/mips/kvm/Kconfig"