4 select ARCH_SUPPORTS_UPROBES
5 select ARCH_MIGHT_HAVE_PC_PARPORT
6 select ARCH_MIGHT_HAVE_PC_SERIO
7 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
8 select ARCH_USE_BUILTIN_BSWAP
9 select HAVE_CONTEXT_TRACKING
10 select HAVE_GENERIC_DMA_COHERENT
13 select HAVE_PERF_EVENTS
14 select PERF_USE_VMALLOC
16 select HAVE_ARCH_SECCOMP_FILTER
17 select HAVE_ARCH_TRACEHOOK
18 select HAVE_CBPF_JIT if !CPU_MICROMIPS
19 select HAVE_FUNCTION_TRACER
20 select HAVE_DYNAMIC_FTRACE
21 select HAVE_FTRACE_MCOUNT_RECORD
22 select HAVE_C_RECORDMCOUNT
23 select HAVE_FUNCTION_GRAPH_TRACER
25 select HAVE_KRETPROBES
26 select HAVE_SYSCALL_TRACEPOINTS
27 select HAVE_DEBUG_KMEMLEAK
28 select HAVE_SYSCALL_TRACEPOINTS
29 select ARCH_HAS_ELF_RANDOMIZE
30 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
31 select RTC_LIB if !MACH_LOONGSON64
32 select GENERIC_ATOMIC64 if !64BIT
33 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
34 select HAVE_DMA_CONTIGUOUS
35 select HAVE_DMA_API_DEBUG
36 select GENERIC_IRQ_PROBE
37 select GENERIC_IRQ_SHOW
38 select GENERIC_PCI_IOMAP
39 select HAVE_ARCH_JUMP_LABEL
40 select ARCH_WANT_IPC_PARSE_VERSION
41 select IRQ_FORCED_THREADING
43 select HAVE_MEMBLOCK_NODE_MAP
44 select ARCH_DISCARD_MEMBLOCK
45 select GENERIC_SMP_IDLE_THREAD
46 select BUILDTIME_EXTABLE_SORT
47 select GENERIC_CLOCKEVENTS
48 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
49 select GENERIC_CMOS_UPDATE
50 select HAVE_MOD_ARCH_SPECIFIC
53 select MODULES_USE_ELF_REL if MODULES
54 select MODULES_USE_ELF_RELA if MODULES && 64BIT
55 select CLONE_BACKWARDS
56 select HAVE_DEBUG_STACKOVERFLOW
57 select HAVE_CC_STACKPROTECTOR
58 select CPU_PM if CPU_IDLE
59 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
60 select ARCH_BINFMT_ELF_STATE
61 select SYSCTL_EXCEPTION_TRACE
62 select HAVE_VIRT_CPU_ACCOUNTING_GEN
63 select HAVE_IRQ_TIME_ACCOUNTING
64 select GENERIC_TIME_VSYSCALL
65 select ARCH_CLOCKSOURCE_DATA
66 select HANDLE_DOMAIN_IRQ
67 select HAVE_EXIT_THREAD
68 select HAVE_REGS_AND_STACK_ACCESS_API
70 menu "Machine selection"
77 bool "Alchemy processor based machines"
78 select ARCH_PHYS_ADDR_T_64BIT
82 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
83 select SYS_HAS_CPU_MIPS32_R1
84 select SYS_SUPPORTS_32BIT_KERNEL
85 select SYS_SUPPORTS_APM_EMULATION
87 select SYS_SUPPORTS_ZBOOT
91 bool "Texas Instruments AR7"
93 select DMA_NONCOHERENT
99 select SYS_HAS_CPU_MIPS32_R1
100 select SYS_HAS_EARLY_PRINTK
101 select SYS_SUPPORTS_32BIT_KERNEL
102 select SYS_SUPPORTS_LITTLE_ENDIAN
103 select SYS_SUPPORTS_MIPS16
104 select SYS_SUPPORTS_ZBOOT_UART16550
109 Support for the Texas Instruments AR7 System-on-a-Chip
110 family: TNETD7100, 7200 and 7300.
113 bool "Atheros AR231x/AR531x SoC support"
116 select DMA_NONCOHERENT
119 select SYS_HAS_CPU_MIPS32_R1
120 select SYS_SUPPORTS_BIG_ENDIAN
121 select SYS_SUPPORTS_32BIT_KERNEL
122 select SYS_HAS_EARLY_PRINTK
124 Support for Atheros AR231x and Atheros AR531x based boards
127 bool "Atheros AR71XX/AR724X/AR913X based boards"
128 select ARCH_HAS_RESET_CONTROLLER
132 select DMA_NONCOHERENT
139 select SYS_HAS_CPU_MIPS32_R2
140 select SYS_HAS_EARLY_PRINTK
141 select SYS_SUPPORTS_32BIT_KERNEL
142 select SYS_SUPPORTS_BIG_ENDIAN
143 select SYS_SUPPORTS_MIPS16
144 select SYS_SUPPORTS_ZBOOT_UART_PROM
147 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
150 bool "Broadcom Generic BMIPS kernel"
152 select NO_EXCEPT_FILL
158 select BCM6345_L1_IRQ
159 select BCM7038_L1_IRQ
160 select BCM7120_L2_IRQ
161 select BRCMSTB_L2_IRQ
163 select DMA_NONCOHERENT
164 select SYS_SUPPORTS_32BIT_KERNEL
165 select SYS_SUPPORTS_LITTLE_ENDIAN
166 select SYS_SUPPORTS_BIG_ENDIAN
167 select SYS_SUPPORTS_HIGHMEM
168 select SYS_HAS_CPU_BMIPS32_3300
169 select SYS_HAS_CPU_BMIPS4350
170 select SYS_HAS_CPU_BMIPS4380
171 select SYS_HAS_CPU_BMIPS5000
173 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
174 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
175 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
176 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
178 Build a generic DT-based kernel image that boots on select
179 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
180 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
181 must be set appropriately for your board.
184 bool "Broadcom BCM47XX based boards"
188 select DMA_NONCOHERENT
191 select SYS_HAS_CPU_MIPS32_R1
192 select NO_EXCEPT_FILL
193 select SYS_SUPPORTS_32BIT_KERNEL
194 select SYS_SUPPORTS_LITTLE_ENDIAN
195 select SYS_SUPPORTS_MIPS16
196 select SYS_HAS_EARLY_PRINTK
197 select USE_GENERIC_EARLY_PRINTK_8250
199 select LEDS_GPIO_REGISTER
203 Support for BCM47XX based boards
206 bool "Broadcom BCM63XX based boards"
211 select DMA_NONCOHERENT
213 select SYS_SUPPORTS_32BIT_KERNEL
214 select SYS_SUPPORTS_BIG_ENDIAN
215 select SYS_HAS_EARLY_PRINTK
219 select MIPS_L1_CACHE_SHIFT_4
221 Support for BCM63XX based boards
228 select DMA_NONCOHERENT
234 select PCI_GT64XXX_PCI0
236 select SYS_HAS_CPU_NEVADA
237 select SYS_HAS_EARLY_PRINTK
238 select SYS_SUPPORTS_32BIT_KERNEL
239 select SYS_SUPPORTS_64BIT_KERNEL
240 select SYS_SUPPORTS_LITTLE_ENDIAN
241 select USE_GENERIC_EARLY_PRINTK_8250
243 config MACH_DECSTATION
247 select CEVT_R4K if CPU_R4X00
249 select CSRC_R4K if CPU_R4X00
250 select CPU_DADDI_WORKAROUNDS if 64BIT
251 select CPU_R4000_WORKAROUNDS if 64BIT
252 select CPU_R4400_WORKAROUNDS if 64BIT
253 select DMA_NONCOHERENT
256 select SYS_HAS_CPU_R3000
257 select SYS_HAS_CPU_R4X00
258 select SYS_SUPPORTS_32BIT_KERNEL
259 select SYS_SUPPORTS_64BIT_KERNEL
260 select SYS_SUPPORTS_LITTLE_ENDIAN
261 select SYS_SUPPORTS_128HZ
262 select SYS_SUPPORTS_256HZ
263 select SYS_SUPPORTS_1024HZ
264 select MIPS_L1_CACHE_SHIFT_4
266 This enables support for DEC's MIPS based workstations. For details
267 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
268 DECstation porting pages on <http://decstation.unix-ag.org/>.
270 If you have one of the following DECstation Models you definitely
271 want to choose R4xx0 for the CPU Type:
278 otherwise choose R3000.
281 bool "Jazz family of machines"
284 select ARCH_MAY_HAVE_PC_FDC
287 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
288 select GENERIC_ISA_DMA
289 select HAVE_PCSPKR_PLATFORM
294 select SYS_HAS_CPU_R4X00
295 select SYS_SUPPORTS_32BIT_KERNEL
296 select SYS_SUPPORTS_64BIT_KERNEL
297 select SYS_SUPPORTS_100HZ
299 This a family of machines based on the MIPS R4030 chipset which was
300 used by several vendors to build RISC/os and Windows NT workstations.
301 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
302 Olivetti M700-10 workstations.
305 bool "Ingenic SoC based machines"
306 select SYS_SUPPORTS_32BIT_KERNEL
307 select SYS_SUPPORTS_LITTLE_ENDIAN
308 select SYS_SUPPORTS_ZBOOT_UART16550
309 select DMA_NONCOHERENT
313 select GENERIC_IRQ_CHIP
319 bool "Lantiq based platforms"
320 select DMA_NONCOHERENT
324 select SYS_HAS_CPU_MIPS32_R1
325 select SYS_HAS_CPU_MIPS32_R2
326 select SYS_SUPPORTS_BIG_ENDIAN
327 select SYS_SUPPORTS_32BIT_KERNEL
328 select SYS_SUPPORTS_MIPS16
329 select SYS_SUPPORTS_MULTITHREADING
330 select SYS_HAS_EARLY_PRINTK
337 select PINCTRL_LANTIQ
338 select ARCH_HAS_RESET_CONTROLLER
339 select RESET_CONTROLLER
342 bool "LASAT Networks platforms"
346 select DMA_NONCOHERENT
347 select SYS_HAS_EARLY_PRINTK
350 select PCI_GT64XXX_PCI0
352 select R5000_CPU_SCACHE
353 select SYS_HAS_CPU_R5000
354 select SYS_SUPPORTS_32BIT_KERNEL
355 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
356 select SYS_SUPPORTS_LITTLE_ENDIAN
358 config MACH_LOONGSON32
359 bool "Loongson-1 family of machines"
360 select SYS_SUPPORTS_ZBOOT
362 This enables support for the Loongson-1 family of machines.
364 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
365 the Institute of Computing Technology (ICT), Chinese Academy of
368 config MACH_LOONGSON64
369 bool "Loongson-2/3 family of machines"
370 select SYS_SUPPORTS_ZBOOT
372 This enables the support of Loongson-2/3 family of machines.
374 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
375 family of multi-core CPUs. They are both 64-bit general-purpose
376 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
377 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
378 in the People's Republic of China. The chief architect is Professor
381 config MACH_PISTACHIO
382 bool "IMG Pistachio SoC based boards"
386 select CLKSRC_MIPS_GIC
389 select DMA_NONCOHERENT
394 select MIPS_CPU_SCACHE
398 select SYS_HAS_CPU_MIPS32_R2
399 select SYS_SUPPORTS_32BIT_KERNEL
400 select SYS_SUPPORTS_LITTLE_ENDIAN
401 select SYS_SUPPORTS_MIPS_CPS
402 select SYS_SUPPORTS_MULTITHREADING
403 select SYS_SUPPORTS_RELOCATABLE
404 select SYS_SUPPORTS_ZBOOT
405 select SYS_HAS_EARLY_PRINTK
406 select USE_GENERIC_EARLY_PRINTK_8250
409 This enables support for the IMG Pistachio SoC platform.
412 bool "MIPSfpga Xilinx based boards"
422 select MIPS_CPU_SCACHE
423 select SYS_HAS_EARLY_PRINTK
424 select SYS_HAS_CPU_MIPS32_R2
425 select SYS_SUPPORTS_32BIT_KERNEL
426 select SYS_SUPPORTS_LITTLE_ENDIAN
427 select SYS_SUPPORTS_ZBOOT_UART16550
429 select USE_GENERIC_EARLY_PRINTK_8250
431 This enables support for the IMG University Program MIPSfpga platform.
434 bool "MIPS Malta board"
435 select ARCH_MAY_HAVE_PC_FDC
441 select CLKSRC_MIPS_GIC
443 select DMA_MAYBE_COHERENT
444 select GENERIC_ISA_DMA
445 select HAVE_PCSPKR_PLATFORM
452 select MIPS_CPU_SCACHE
453 select MIPS_L1_CACHE_SHIFT_6
454 select PCI_GT64XXX_PCI0
458 select SYS_HAS_CPU_MIPS32_R1
459 select SYS_HAS_CPU_MIPS32_R2
460 select SYS_HAS_CPU_MIPS32_R3_5
461 select SYS_HAS_CPU_MIPS32_R5
462 select SYS_HAS_CPU_MIPS32_R6
463 select SYS_HAS_CPU_MIPS64_R1
464 select SYS_HAS_CPU_MIPS64_R2
465 select SYS_HAS_CPU_MIPS64_R6
466 select SYS_HAS_CPU_NEVADA
467 select SYS_HAS_CPU_RM7000
468 select SYS_SUPPORTS_32BIT_KERNEL
469 select SYS_SUPPORTS_64BIT_KERNEL
470 select SYS_SUPPORTS_BIG_ENDIAN
471 select SYS_SUPPORTS_HIGHMEM
472 select SYS_SUPPORTS_LITTLE_ENDIAN
473 select SYS_SUPPORTS_MICROMIPS
474 select SYS_SUPPORTS_MIPS_CMP
475 select SYS_SUPPORTS_MIPS_CPS
476 select SYS_SUPPORTS_MIPS16
477 select SYS_SUPPORTS_MULTITHREADING
478 select SYS_SUPPORTS_SMARTMIPS
479 select SYS_SUPPORTS_ZBOOT
480 select SYS_SUPPORTS_RELOCATABLE
483 select ZONE_DMA32 if 64BIT
487 This enables support for the MIPS Technologies Malta evaluation
491 bool "Microchip PIC32 Family"
493 This enables support for the Microchip PIC32 family of platforms.
495 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
499 bool "MIPS SEAD3 board"
505 select CLKSRC_MIPS_GIC
507 select CPU_MIPSR2_IRQ_VI
508 select CPU_MIPSR2_IRQ_EI
509 select DMA_NONCOHERENT
514 select SYS_HAS_CPU_MIPS32_R1
515 select SYS_HAS_CPU_MIPS32_R2
516 select SYS_HAS_CPU_MIPS32_R6
517 select SYS_HAS_CPU_MIPS64_R1
518 select SYS_SUPPORTS_32BIT_KERNEL
519 select SYS_SUPPORTS_64BIT_KERNEL
520 select SYS_SUPPORTS_BIG_ENDIAN
521 select SYS_SUPPORTS_LITTLE_ENDIAN
522 select SYS_SUPPORTS_SMARTMIPS
523 select SYS_SUPPORTS_MICROMIPS
524 select SYS_SUPPORTS_MIPS16
525 select SYS_SUPPORTS_RELOCATABLE
526 select USB_EHCI_BIG_ENDIAN_DESC
527 select USB_EHCI_BIG_ENDIAN_MMIO
530 This enables support for the MIPS Technologies SEAD3 evaluation
534 bool "NEC EMMA2RH Mark-eins board"
538 This enables support for the NEC Electronics Mark-eins boards.
541 bool "NEC VR4100 series based machines"
544 select SYS_HAS_CPU_VR41XX
545 select SYS_SUPPORTS_MIPS16
549 bool "NXP STB220 board"
552 Support for NXP Semiconductors STB220 Development Board.
559 Support for NXP Semiconductors STB225 Development Board.
562 bool "PMC-Sierra MSP chipsets"
565 select DMA_NONCOHERENT
567 select NO_EXCEPT_FILL
569 select SYS_HAS_CPU_MIPS32_R1
570 select SYS_HAS_CPU_MIPS32_R2
571 select SYS_SUPPORTS_32BIT_KERNEL
572 select SYS_SUPPORTS_BIG_ENDIAN
573 select SYS_SUPPORTS_MIPS16
576 select SERIAL_8250_CONSOLE
577 select USB_EHCI_BIG_ENDIAN_MMIO
578 select USB_EHCI_BIG_ENDIAN_DESC
580 This adds support for the PMC-Sierra family of Multi-Service
581 Processor System-On-A-Chips. These parts include a number
582 of integrated peripherals, interfaces and DSPs in addition to
583 a variety of MIPS cores.
586 bool "Ralink based machines"
590 select DMA_NONCOHERENT
593 select SYS_HAS_CPU_MIPS32_R1
594 select SYS_HAS_CPU_MIPS32_R2
595 select SYS_SUPPORTS_32BIT_KERNEL
596 select SYS_SUPPORTS_LITTLE_ENDIAN
597 select SYS_SUPPORTS_MIPS16
598 select SYS_HAS_EARLY_PRINTK
600 select ARCH_HAS_RESET_CONTROLLER
601 select RESET_CONTROLLER
604 bool "SGI IP22 (Indy/Indigo2)"
610 select DEFAULT_SGI_PARTITION
611 select DMA_NONCOHERENT
615 select IP22_CPU_SCACHE
617 select GENERIC_ISA_DMA_SUPPORT_BROKEN
619 select SGI_HAS_INDYDOG
625 select SYS_HAS_CPU_R4X00
626 select SYS_HAS_CPU_R5000
628 # Disable EARLY_PRINTK for now since it leads to overwritten prom
629 # memory during early boot on some machines.
631 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
632 # for a more details discussion
634 # select SYS_HAS_EARLY_PRINTK
635 select SYS_SUPPORTS_32BIT_KERNEL
636 select SYS_SUPPORTS_64BIT_KERNEL
637 select SYS_SUPPORTS_BIG_ENDIAN
638 select MIPS_L1_CACHE_SHIFT_7
640 This are the SGI Indy, Challenge S and Indigo2, as well as certain
641 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
642 that runs on these, say Y here.
645 bool "SGI IP27 (Origin200/2000)"
649 select DEFAULT_SGI_PARTITION
651 select SYS_HAS_EARLY_PRINTK
653 select NR_CPUS_DEFAULT_64
654 select SYS_HAS_CPU_R10000
655 select SYS_SUPPORTS_64BIT_KERNEL
656 select SYS_SUPPORTS_BIG_ENDIAN
657 select SYS_SUPPORTS_NUMA
658 select SYS_SUPPORTS_SMP
659 select MIPS_L1_CACHE_SHIFT_7
661 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
662 workstations. To compile a Linux kernel that runs on these, say Y
666 bool "SGI IP28 (Indigo2 R10k)"
672 select DEFAULT_SGI_PARTITION
673 select DMA_NONCOHERENT
674 select GENERIC_ISA_DMA_SUPPORT_BROKEN
680 select SGI_HAS_INDYDOG
686 select SYS_HAS_CPU_R10000
688 # Disable EARLY_PRINTK for now since it leads to overwritten prom
689 # memory during early boot on some machines.
691 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
692 # for a more details discussion
694 # select SYS_HAS_EARLY_PRINTK
695 select SYS_SUPPORTS_64BIT_KERNEL
696 select SYS_SUPPORTS_BIG_ENDIAN
697 select MIPS_L1_CACHE_SHIFT_7
699 This is the SGI Indigo2 with R10000 processor. To compile a Linux
700 kernel that runs on these, say Y here.
709 select DMA_NONCOHERENT
712 select R5000_CPU_SCACHE
713 select RM7000_CPU_SCACHE
714 select SYS_HAS_CPU_R5000
715 select SYS_HAS_CPU_R10000 if BROKEN
716 select SYS_HAS_CPU_RM7000
717 select SYS_HAS_CPU_NEVADA
718 select SYS_SUPPORTS_64BIT_KERNEL
719 select SYS_SUPPORTS_BIG_ENDIAN
721 If you want this kernel to run on SGI O2 workstation, say Y here.
724 bool "Sibyte BCM91120C-CRhine"
727 select SIBYTE_BCM1120
729 select SYS_HAS_CPU_SB1
730 select SYS_SUPPORTS_BIG_ENDIAN
731 select SYS_SUPPORTS_LITTLE_ENDIAN
734 bool "Sibyte BCM91120x-Carmel"
737 select SIBYTE_BCM1120
739 select SYS_HAS_CPU_SB1
740 select SYS_SUPPORTS_BIG_ENDIAN
741 select SYS_SUPPORTS_LITTLE_ENDIAN
744 bool "Sibyte BCM91125C-CRhone"
747 select SIBYTE_BCM1125
749 select SYS_HAS_CPU_SB1
750 select SYS_SUPPORTS_BIG_ENDIAN
751 select SYS_SUPPORTS_HIGHMEM
752 select SYS_SUPPORTS_LITTLE_ENDIAN
755 bool "Sibyte BCM91125E-Rhone"
758 select SIBYTE_BCM1125H
760 select SYS_HAS_CPU_SB1
761 select SYS_SUPPORTS_BIG_ENDIAN
762 select SYS_SUPPORTS_LITTLE_ENDIAN
765 bool "Sibyte BCM91250A-SWARM"
768 select HAVE_PATA_PLATFORM
771 select SYS_HAS_CPU_SB1
772 select SYS_SUPPORTS_BIG_ENDIAN
773 select SYS_SUPPORTS_HIGHMEM
774 select SYS_SUPPORTS_LITTLE_ENDIAN
775 select ZONE_DMA32 if 64BIT
777 config SIBYTE_LITTLESUR
778 bool "Sibyte BCM91250C2-LittleSur"
781 select HAVE_PATA_PLATFORM
784 select SYS_HAS_CPU_SB1
785 select SYS_SUPPORTS_BIG_ENDIAN
786 select SYS_SUPPORTS_HIGHMEM
787 select SYS_SUPPORTS_LITTLE_ENDIAN
789 config SIBYTE_SENTOSA
790 bool "Sibyte BCM91250E-Sentosa"
795 select SYS_HAS_CPU_SB1
796 select SYS_SUPPORTS_BIG_ENDIAN
797 select SYS_SUPPORTS_LITTLE_ENDIAN
800 bool "Sibyte BCM91480B-BigSur"
803 select NR_CPUS_DEFAULT_4
804 select SIBYTE_BCM1x80
806 select SYS_HAS_CPU_SB1
807 select SYS_SUPPORTS_BIG_ENDIAN
808 select SYS_SUPPORTS_HIGHMEM
809 select SYS_SUPPORTS_LITTLE_ENDIAN
810 select ZONE_DMA32 if 64BIT
813 bool "SNI RM200/300/400"
814 select FW_ARC if CPU_LITTLE_ENDIAN
815 select FW_ARC32 if CPU_LITTLE_ENDIAN
816 select FW_SNIPROM if CPU_BIG_ENDIAN
817 select ARCH_MAY_HAVE_PC_FDC
821 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
822 select DMA_NONCOHERENT
823 select GENERIC_ISA_DMA
824 select HAVE_PCSPKR_PLATFORM
831 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
832 select SYS_HAS_CPU_R4X00
833 select SYS_HAS_CPU_R5000
834 select SYS_HAS_CPU_R10000
835 select R5000_CPU_SCACHE
836 select SYS_HAS_EARLY_PRINTK
837 select SYS_SUPPORTS_32BIT_KERNEL
838 select SYS_SUPPORTS_64BIT_KERNEL
839 select SYS_SUPPORTS_BIG_ENDIAN
840 select SYS_SUPPORTS_HIGHMEM
841 select SYS_SUPPORTS_LITTLE_ENDIAN
843 The SNI RM200/300/400 are MIPS-based machines manufactured by
844 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
845 Technology and now in turn merged with Fujitsu. Say Y here to
846 support this machine type.
849 bool "Toshiba TX39 series based machines"
852 bool "Toshiba TX49 series based machines"
854 config MIKROTIK_RB532
855 bool "Mikrotik RB532 boards"
858 select DMA_NONCOHERENT
861 select SYS_HAS_CPU_MIPS32_R1
862 select SYS_SUPPORTS_32BIT_KERNEL
863 select SYS_SUPPORTS_LITTLE_ENDIAN
867 select MIPS_L1_CACHE_SHIFT_4
869 Support the Mikrotik(tm) RouterBoard 532 series,
870 based on the IDT RC32434 SoC.
872 config CAVIUM_OCTEON_SOC
873 bool "Cavium Networks Octeon SoC based boards"
875 select ARCH_PHYS_ADDR_T_64BIT
877 select SYS_SUPPORTS_64BIT_KERNEL
878 select SYS_SUPPORTS_BIG_ENDIAN
880 select EDAC_ATOMIC_SCRUB
881 select SYS_SUPPORTS_LITTLE_ENDIAN
882 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
883 select SYS_HAS_EARLY_PRINTK
884 select SYS_HAS_CPU_CAVIUM_OCTEON
891 select ARCH_SPARSEMEM_ENABLE
892 select SYS_SUPPORTS_SMP
893 select NR_CPUS_DEFAULT_16
895 select MTD_COMPLEX_MAPPINGS
897 This option supports all of the Octeon reference boards from Cavium
898 Networks. It builds a kernel that dynamically determines the Octeon
899 CPU type and supports all known board reference implementations.
900 Some of the supported boards are:
907 Say Y here for most Octeon reference boards.
910 bool "Netlogic XLR/XLS based systems"
913 select SYS_HAS_CPU_XLR
914 select SYS_SUPPORTS_SMP
917 select SYS_SUPPORTS_32BIT_KERNEL
918 select SYS_SUPPORTS_64BIT_KERNEL
919 select ARCH_PHYS_ADDR_T_64BIT
920 select SYS_SUPPORTS_BIG_ENDIAN
921 select SYS_SUPPORTS_HIGHMEM
923 select NR_CPUS_DEFAULT_32
927 select ZONE_DMA32 if 64BIT
929 select SYS_HAS_EARLY_PRINTK
930 select SYS_SUPPORTS_ZBOOT
931 select SYS_SUPPORTS_ZBOOT_UART16550
933 Support for systems based on Netlogic XLR and XLS processors.
934 Say Y here if you have a XLR or XLS based board.
937 bool "Netlogic XLP based systems"
940 select SYS_HAS_CPU_XLP
941 select SYS_SUPPORTS_SMP
943 select SYS_SUPPORTS_32BIT_KERNEL
944 select SYS_SUPPORTS_64BIT_KERNEL
945 select ARCH_PHYS_ADDR_T_64BIT
947 select SYS_SUPPORTS_BIG_ENDIAN
948 select SYS_SUPPORTS_LITTLE_ENDIAN
949 select SYS_SUPPORTS_HIGHMEM
951 select NR_CPUS_DEFAULT_32
955 select ZONE_DMA32 if 64BIT
957 select SYS_HAS_EARLY_PRINTK
959 select SYS_SUPPORTS_ZBOOT
960 select SYS_SUPPORTS_ZBOOT_UART16550
962 This board is based on Netlogic XLP Processor.
963 Say Y here if you have a XLP based board.
966 bool "Para-Virtualized guest system"
970 select SYS_SUPPORTS_64BIT_KERNEL
971 select SYS_SUPPORTS_32BIT_KERNEL
972 select SYS_SUPPORTS_BIG_ENDIAN
973 select SYS_SUPPORTS_SMP
974 select NR_CPUS_DEFAULT_4
975 select SYS_HAS_EARLY_PRINTK
976 select SYS_HAS_CPU_MIPS32_R2
977 select SYS_HAS_CPU_MIPS64_R2
978 select SYS_HAS_CPU_CAVIUM_OCTEON
982 This option supports guest running under ????
986 source "arch/mips/alchemy/Kconfig"
987 source "arch/mips/ath25/Kconfig"
988 source "arch/mips/ath79/Kconfig"
989 source "arch/mips/bcm47xx/Kconfig"
990 source "arch/mips/bcm63xx/Kconfig"
991 source "arch/mips/bmips/Kconfig"
992 source "arch/mips/jazz/Kconfig"
993 source "arch/mips/jz4740/Kconfig"
994 source "arch/mips/lantiq/Kconfig"
995 source "arch/mips/lasat/Kconfig"
996 source "arch/mips/pic32/Kconfig"
997 source "arch/mips/pistachio/Kconfig"
998 source "arch/mips/pmcs-msp71xx/Kconfig"
999 source "arch/mips/ralink/Kconfig"
1000 source "arch/mips/sgi-ip27/Kconfig"
1001 source "arch/mips/sibyte/Kconfig"
1002 source "arch/mips/txx9/Kconfig"
1003 source "arch/mips/vr41xx/Kconfig"
1004 source "arch/mips/cavium-octeon/Kconfig"
1005 source "arch/mips/loongson32/Kconfig"
1006 source "arch/mips/loongson64/Kconfig"
1007 source "arch/mips/netlogic/Kconfig"
1008 source "arch/mips/paravirt/Kconfig"
1009 source "arch/mips/xilfpga/Kconfig"
1013 config RWSEM_GENERIC_SPINLOCK
1017 config RWSEM_XCHGADD_ALGORITHM
1020 config ARCH_HAS_ILOG2_U32
1024 config ARCH_HAS_ILOG2_U64
1028 config GENERIC_HWEIGHT
1032 config GENERIC_CALIBRATE_DELAY
1036 config SCHED_OMIT_FRAME_POINTER
1041 # Select some configuration options automatically based on user selections.
1046 config ARCH_MAY_HAVE_PC_FDC
1082 config MIPS_CLOCK_VSYSCALL
1083 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1092 config ARCH_DMA_ADDR_T_64BIT
1093 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1095 config ARCH_SUPPORTS_UPROBES
1098 config DMA_MAYBE_COHERENT
1099 select DMA_NONCOHERENT
1105 config DMA_NONCOHERENT
1107 select NEED_DMA_MAP_STATE
1109 config NEED_DMA_MAP_STATE
1112 config SYS_HAS_EARLY_PRINTK
1115 config SYS_SUPPORTS_HOTPLUG_CPU
1118 config MIPS_BONITO64
1133 config NO_IOPORT_MAP
1139 config GENERIC_ISA_DMA
1141 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1144 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1146 select GENERIC_ISA_DMA
1151 config HOLES_IN_ZONE
1154 config SYS_SUPPORTS_RELOCATABLE
1157 Selected if the platform supports relocating the kernel.
1158 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1159 to allow access to command line and entropy sources.
1162 # Endianness selection. Sufficiently obscure so many users don't know what to
1163 # answer,so we try hard to limit the available choices. Also the use of a
1164 # choice statement should be more obvious to the user.
1167 prompt "Endianness selection"
1169 Some MIPS machines can be configured for either little or big endian
1170 byte order. These modes require different kernels and a different
1171 Linux distribution. In general there is one preferred byteorder for a
1172 particular system but some systems are just as commonly used in the
1173 one or the other endianness.
1175 config CPU_BIG_ENDIAN
1177 depends on SYS_SUPPORTS_BIG_ENDIAN
1179 config CPU_LITTLE_ENDIAN
1180 bool "Little endian"
1181 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1188 config SYS_SUPPORTS_APM_EMULATION
1191 config SYS_SUPPORTS_BIG_ENDIAN
1194 config SYS_SUPPORTS_LITTLE_ENDIAN
1197 config SYS_SUPPORTS_HUGETLBFS
1199 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1202 config MIPS_HUGE_TLB_SUPPORT
1203 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1220 config PCI_GT64XXX_PCI0
1223 config NO_EXCEPT_FILL
1230 select DMA_NONCOHERENT
1232 select SWAP_IO_SPACE
1233 select SYS_HAS_CPU_R5500
1234 select SYS_SUPPORTS_32BIT_KERNEL
1235 select SYS_SUPPORTS_64BIT_KERNEL
1236 select SYS_SUPPORTS_BIG_ENDIAN
1243 select DMA_NONCOHERENT
1244 select SYS_HAS_CPU_MIPS32_R2
1245 select SYS_SUPPORTS_32BIT_KERNEL
1246 select SYS_SUPPORTS_LITTLE_ENDIAN
1247 select SYS_SUPPORTS_BIG_ENDIAN
1248 select SYS_SUPPORTS_MIPS16
1249 select CPU_MIPSR2_IRQ_VI
1258 config SWAP_IO_SPACE
1261 config SGI_HAS_INDYDOG
1273 config SGI_HAS_ZILOG
1276 config SGI_HAS_I8042
1279 config DEFAULT_SGI_PARTITION
1291 config MIPS_L1_CACHE_SHIFT_4
1294 config MIPS_L1_CACHE_SHIFT_5
1297 config MIPS_L1_CACHE_SHIFT_6
1300 config MIPS_L1_CACHE_SHIFT_7
1303 config MIPS_L1_CACHE_SHIFT
1305 default "7" if MIPS_L1_CACHE_SHIFT_7
1306 default "6" if MIPS_L1_CACHE_SHIFT_6
1307 default "5" if MIPS_L1_CACHE_SHIFT_5
1308 default "4" if MIPS_L1_CACHE_SHIFT_4
1311 config HAVE_STD_PC_SERIAL_PORT
1315 bool "ARC console support"
1316 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1320 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1325 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1334 menu "CPU selection"
1340 config CPU_LOONGSON3
1341 bool "Loongson 3 CPU"
1342 depends on SYS_HAS_CPU_LOONGSON3
1343 select CPU_SUPPORTS_64BIT_KERNEL
1344 select CPU_SUPPORTS_HIGHMEM
1345 select CPU_SUPPORTS_HUGEPAGES
1346 select WEAK_ORDERING
1347 select WEAK_REORDERING_BEYOND_LLSC
1348 select MIPS_PGD_C0_CONTEXT
1351 The Loongson 3 processor implements the MIPS64R2 instruction
1352 set with many extensions.
1354 config LOONGSON3_ENHANCEMENT
1355 bool "New Loongson 3 CPU Enhancements"
1358 select CPU_HAS_PREFETCH
1359 depends on CPU_LOONGSON3
1361 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1362 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1363 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1364 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1365 Fast TLB refill support, etc.
1367 This option enable those enhancements which are not probed at run
1368 time. If you want a generic kernel to run on all Loongson 3 machines,
1369 please say 'N' here. If you want a high-performance kernel to run on
1370 new Loongson 3 machines only, please say 'Y' here.
1372 config CPU_LOONGSON2E
1374 depends on SYS_HAS_CPU_LOONGSON2E
1375 select CPU_LOONGSON2
1377 The Loongson 2E processor implements the MIPS III instruction set
1378 with many extensions.
1380 It has an internal FPGA northbridge, which is compatible to
1383 config CPU_LOONGSON2F
1385 depends on SYS_HAS_CPU_LOONGSON2F
1386 select CPU_LOONGSON2
1389 The Loongson 2F processor implements the MIPS III instruction set
1390 with many extensions.
1392 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1393 have a similar programming interface with FPGA northbridge used in
1396 config CPU_LOONGSON1B
1398 depends on SYS_HAS_CPU_LOONGSON1B
1399 select CPU_LOONGSON1
1400 select LEDS_GPIO_REGISTER
1402 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1403 release 2 instruction set.
1405 config CPU_LOONGSON1C
1407 depends on SYS_HAS_CPU_LOONGSON1C
1408 select CPU_LOONGSON1
1409 select ARCH_WANT_OPTIONAL_GPIOLIB
1410 select LEDS_GPIO_REGISTER
1412 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1413 release 2 instruction set.
1415 config CPU_MIPS32_R1
1416 bool "MIPS32 Release 1"
1417 depends on SYS_HAS_CPU_MIPS32_R1
1418 select CPU_HAS_PREFETCH
1419 select CPU_SUPPORTS_32BIT_KERNEL
1420 select CPU_SUPPORTS_HIGHMEM
1422 Choose this option to build a kernel for release 1 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.
1427 Release 2 of the MIPS32 architecture is available since several
1428 years so chances are you even have a MIPS32 Release 2 processor
1429 in which case you should choose CPU_MIPS32_R2 instead for better
1432 config CPU_MIPS32_R2
1433 bool "MIPS32 Release 2"
1434 depends on SYS_HAS_CPU_MIPS32_R2
1435 select CPU_HAS_PREFETCH
1436 select CPU_SUPPORTS_32BIT_KERNEL
1437 select CPU_SUPPORTS_HIGHMEM
1438 select CPU_SUPPORTS_MSA
1441 Choose this option to build a kernel for release 2 or later of the
1442 MIPS32 architecture. Most modern embedded systems with a 32-bit
1443 MIPS processor are based on a MIPS32 processor. If you know the
1444 specific type of processor in your system, choose those that one
1445 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1447 config CPU_MIPS32_R6
1448 bool "MIPS32 Release 6"
1449 depends on SYS_HAS_CPU_MIPS32_R6
1450 select CPU_HAS_PREFETCH
1451 select CPU_SUPPORTS_32BIT_KERNEL
1452 select CPU_SUPPORTS_HIGHMEM
1453 select CPU_SUPPORTS_MSA
1456 select MIPS_O32_FP64_SUPPORT
1458 Choose this option to build a kernel for release 6 or later of the
1459 MIPS32 architecture. New MIPS processors, starting with the Warrior
1460 family, are based on a MIPS32r6 processor. If you own an older
1461 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1463 config CPU_MIPS64_R1
1464 bool "MIPS64 Release 1"
1465 depends on SYS_HAS_CPU_MIPS64_R1
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
1472 Choose this option to build a kernel for release 1 or later of the
1473 MIPS64 architecture. Many modern embedded systems with a 64-bit
1474 MIPS processor are based on a MIPS64 processor. If you know the
1475 specific type of processor in your system, choose those that one
1476 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1477 Release 2 of the MIPS64 architecture is available since several
1478 years so chances are you even have a MIPS64 Release 2 processor
1479 in which case you should choose CPU_MIPS64_R2 instead for better
1482 config CPU_MIPS64_R2
1483 bool "MIPS64 Release 2"
1484 depends on SYS_HAS_CPU_MIPS64_R2
1485 select CPU_HAS_PREFETCH
1486 select CPU_SUPPORTS_32BIT_KERNEL
1487 select CPU_SUPPORTS_64BIT_KERNEL
1488 select CPU_SUPPORTS_HIGHMEM
1489 select CPU_SUPPORTS_HUGEPAGES
1490 select CPU_SUPPORTS_MSA
1493 Choose this option to build a kernel for release 2 or later of the
1494 MIPS64 architecture. Many modern embedded systems with a 64-bit
1495 MIPS processor are based on a MIPS64 processor. If you know the
1496 specific type of processor in your system, choose those that one
1497 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1499 config CPU_MIPS64_R6
1500 bool "MIPS64 Release 6"
1501 depends on SYS_HAS_CPU_MIPS64_R6
1502 select CPU_HAS_PREFETCH
1503 select CPU_SUPPORTS_32BIT_KERNEL
1504 select CPU_SUPPORTS_64BIT_KERNEL
1505 select CPU_SUPPORTS_HIGHMEM
1506 select CPU_SUPPORTS_MSA
1508 select MIPS_O32_FP64_SUPPORT if MIPS32_O32
1511 Choose this option to build a kernel for release 6 or later of the
1512 MIPS64 architecture. New MIPS processors, starting with the Warrior
1513 family, are based on a MIPS64r6 processor. If you own an older
1514 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1518 depends on SYS_HAS_CPU_R3000
1520 select CPU_SUPPORTS_32BIT_KERNEL
1521 select CPU_SUPPORTS_HIGHMEM
1523 Please make sure to pick the right CPU type. Linux/MIPS is not
1524 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1525 *not* work on R4000 machines and vice versa. However, since most
1526 of the supported machines have an R4000 (or similar) CPU, R4x00
1527 might be a safe bet. If the resulting kernel does not work,
1528 try to recompile with R3000.
1532 depends on SYS_HAS_CPU_TX39XX
1533 select CPU_SUPPORTS_32BIT_KERNEL
1537 depends on SYS_HAS_CPU_VR41XX
1538 select CPU_SUPPORTS_32BIT_KERNEL
1539 select CPU_SUPPORTS_64BIT_KERNEL
1541 The options selects support for the NEC VR4100 series of processors.
1542 Only choose this option if you have one of these processors as a
1543 kernel built with this option will not run on any other type of
1544 processor or vice versa.
1548 depends on SYS_HAS_CPU_R4300
1549 select CPU_SUPPORTS_32BIT_KERNEL
1550 select CPU_SUPPORTS_64BIT_KERNEL
1552 MIPS Technologies R4300-series processors.
1556 depends on SYS_HAS_CPU_R4X00
1557 select CPU_SUPPORTS_32BIT_KERNEL
1558 select CPU_SUPPORTS_64BIT_KERNEL
1559 select CPU_SUPPORTS_HUGEPAGES
1561 MIPS Technologies R4000-series processors other than 4300, including
1562 the R4000, R4400, R4600, and 4700.
1566 depends on SYS_HAS_CPU_TX49XX
1567 select CPU_HAS_PREFETCH
1568 select CPU_SUPPORTS_32BIT_KERNEL
1569 select CPU_SUPPORTS_64BIT_KERNEL
1570 select CPU_SUPPORTS_HUGEPAGES
1574 depends on SYS_HAS_CPU_R5000
1575 select CPU_SUPPORTS_32BIT_KERNEL
1576 select CPU_SUPPORTS_64BIT_KERNEL
1577 select CPU_SUPPORTS_HUGEPAGES
1579 MIPS Technologies R5000-series processors other than the Nevada.
1583 depends on SYS_HAS_CPU_R5432
1584 select CPU_SUPPORTS_32BIT_KERNEL
1585 select CPU_SUPPORTS_64BIT_KERNEL
1586 select CPU_SUPPORTS_HUGEPAGES
1590 depends on SYS_HAS_CPU_R5500
1591 select CPU_SUPPORTS_32BIT_KERNEL
1592 select CPU_SUPPORTS_64BIT_KERNEL
1593 select CPU_SUPPORTS_HUGEPAGES
1595 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1600 depends on SYS_HAS_CPU_R6000
1601 select CPU_SUPPORTS_32BIT_KERNEL
1603 MIPS Technologies R6000 and R6000A series processors. Note these
1604 processors are extremely rare and the support for them is incomplete.
1608 depends on SYS_HAS_CPU_NEVADA
1609 select CPU_SUPPORTS_32BIT_KERNEL
1610 select CPU_SUPPORTS_64BIT_KERNEL
1611 select CPU_SUPPORTS_HUGEPAGES
1613 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1617 depends on SYS_HAS_CPU_R8000
1618 select CPU_HAS_PREFETCH
1619 select CPU_SUPPORTS_64BIT_KERNEL
1621 MIPS Technologies R8000 processors. Note these processors are
1622 uncommon and the support for them is incomplete.
1626 depends on SYS_HAS_CPU_R10000
1627 select CPU_HAS_PREFETCH
1628 select CPU_SUPPORTS_32BIT_KERNEL
1629 select CPU_SUPPORTS_64BIT_KERNEL
1630 select CPU_SUPPORTS_HIGHMEM
1631 select CPU_SUPPORTS_HUGEPAGES
1633 MIPS Technologies R10000-series processors.
1637 depends on SYS_HAS_CPU_RM7000
1638 select CPU_HAS_PREFETCH
1639 select CPU_SUPPORTS_32BIT_KERNEL
1640 select CPU_SUPPORTS_64BIT_KERNEL
1641 select CPU_SUPPORTS_HIGHMEM
1642 select CPU_SUPPORTS_HUGEPAGES
1646 depends on SYS_HAS_CPU_SB1
1647 select CPU_SUPPORTS_32BIT_KERNEL
1648 select CPU_SUPPORTS_64BIT_KERNEL
1649 select CPU_SUPPORTS_HIGHMEM
1650 select CPU_SUPPORTS_HUGEPAGES
1651 select WEAK_ORDERING
1653 config CPU_CAVIUM_OCTEON
1654 bool "Cavium Octeon processor"
1655 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1656 select CPU_HAS_PREFETCH
1657 select CPU_SUPPORTS_64BIT_KERNEL
1658 select WEAK_ORDERING
1659 select CPU_SUPPORTS_HIGHMEM
1660 select CPU_SUPPORTS_HUGEPAGES
1661 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1662 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1663 select MIPS_L1_CACHE_SHIFT_7
1665 The Cavium Octeon processor is a highly integrated chip containing
1666 many ethernet hardware widgets for networking tasks. The processor
1667 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1668 Full details can be found at http://www.caviumnetworks.com.
1671 bool "Broadcom BMIPS"
1672 depends on SYS_HAS_CPU_BMIPS
1674 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1675 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1676 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1677 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1678 select CPU_SUPPORTS_32BIT_KERNEL
1679 select DMA_NONCOHERENT
1681 select SWAP_IO_SPACE
1682 select WEAK_ORDERING
1683 select CPU_SUPPORTS_HIGHMEM
1684 select CPU_HAS_PREFETCH
1686 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1689 bool "Netlogic XLR SoC"
1690 depends on SYS_HAS_CPU_XLR
1691 select CPU_SUPPORTS_32BIT_KERNEL
1692 select CPU_SUPPORTS_64BIT_KERNEL
1693 select CPU_SUPPORTS_HIGHMEM
1694 select CPU_SUPPORTS_HUGEPAGES
1695 select WEAK_ORDERING
1696 select WEAK_REORDERING_BEYOND_LLSC
1698 Netlogic Microsystems XLR/XLS processors.
1701 bool "Netlogic XLP SoC"
1702 depends on SYS_HAS_CPU_XLP
1703 select CPU_SUPPORTS_32BIT_KERNEL
1704 select CPU_SUPPORTS_64BIT_KERNEL
1705 select CPU_SUPPORTS_HIGHMEM
1706 select WEAK_ORDERING
1707 select WEAK_REORDERING_BEYOND_LLSC
1708 select CPU_HAS_PREFETCH
1710 select CPU_SUPPORTS_HUGEPAGES
1711 select MIPS_ASID_BITS_VARIABLE
1713 Netlogic Microsystems XLP processors.
1716 config CPU_MIPS32_3_5_FEATURES
1717 bool "MIPS32 Release 3.5 Features"
1718 depends on SYS_HAS_CPU_MIPS32_R3_5
1719 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1721 Choose this option to build a kernel for release 2 or later of the
1722 MIPS32 architecture including features from the 3.5 release such as
1723 support for Enhanced Virtual Addressing (EVA).
1725 config CPU_MIPS32_3_5_EVA
1726 bool "Enhanced Virtual Addressing (EVA)"
1727 depends on CPU_MIPS32_3_5_FEATURES
1731 Choose this option if you want to enable the Enhanced Virtual
1732 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1733 One of its primary benefits is an increase in the maximum size
1734 of lowmem (up to 3GB). If unsure, say 'N' here.
1736 config CPU_MIPS32_R5_FEATURES
1737 bool "MIPS32 Release 5 Features"
1738 depends on SYS_HAS_CPU_MIPS32_R5
1739 depends on CPU_MIPS32_R2
1741 Choose this option to build a kernel for release 2 or later of the
1742 MIPS32 architecture including features from release 5 such as
1743 support for Extended Physical Addressing (XPA).
1745 config CPU_MIPS32_R5_XPA
1746 bool "Extended Physical Addressing (XPA)"
1747 depends on CPU_MIPS32_R5_FEATURES
1749 depends on !PAGE_SIZE_4KB
1750 depends on SYS_SUPPORTS_HIGHMEM
1753 select ARCH_PHYS_ADDR_T_64BIT
1756 Choose this option if you want to enable the Extended Physical
1757 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1758 benefit is to increase physical addressing equal to or greater
1759 than 40 bits. Note that this has the side effect of turning on
1760 64-bit addressing which in turn makes the PTEs 64-bit in size.
1761 If unsure, say 'N' here.
1764 config CPU_NOP_WORKAROUNDS
1767 config CPU_JUMP_WORKAROUNDS
1770 config CPU_LOONGSON2F_WORKAROUNDS
1771 bool "Loongson 2F Workarounds"
1773 select CPU_NOP_WORKAROUNDS
1774 select CPU_JUMP_WORKAROUNDS
1776 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1777 require workarounds. Without workarounds the system may hang
1778 unexpectedly. For more information please refer to the gas
1779 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1781 Loongson 2F03 and later have fixed these issues and no workarounds
1782 are needed. The workarounds have no significant side effect on them
1783 but may decrease the performance of the system so this option should
1784 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1787 If unsure, please say Y.
1788 endif # CPU_LOONGSON2F
1790 config SYS_SUPPORTS_ZBOOT
1792 select HAVE_KERNEL_GZIP
1793 select HAVE_KERNEL_BZIP2
1794 select HAVE_KERNEL_LZ4
1795 select HAVE_KERNEL_LZMA
1796 select HAVE_KERNEL_LZO
1797 select HAVE_KERNEL_XZ
1799 config SYS_SUPPORTS_ZBOOT_UART16550
1801 select SYS_SUPPORTS_ZBOOT
1803 config SYS_SUPPORTS_ZBOOT_UART_PROM
1805 select SYS_SUPPORTS_ZBOOT
1807 config CPU_LOONGSON2
1809 select CPU_SUPPORTS_32BIT_KERNEL
1810 select CPU_SUPPORTS_64BIT_KERNEL
1811 select CPU_SUPPORTS_HIGHMEM
1812 select CPU_SUPPORTS_HUGEPAGES
1814 config CPU_LOONGSON1
1818 select CPU_HAS_PREFETCH
1819 select CPU_SUPPORTS_32BIT_KERNEL
1820 select CPU_SUPPORTS_HIGHMEM
1821 select CPU_SUPPORTS_CPUFREQ
1823 config CPU_BMIPS32_3300
1824 select SMP_UP if SMP
1827 config CPU_BMIPS4350
1829 select SYS_SUPPORTS_SMP
1830 select SYS_SUPPORTS_HOTPLUG_CPU
1832 config CPU_BMIPS4380
1834 select MIPS_L1_CACHE_SHIFT_6
1835 select SYS_SUPPORTS_SMP
1836 select SYS_SUPPORTS_HOTPLUG_CPU
1839 config CPU_BMIPS5000
1841 select MIPS_CPU_SCACHE
1842 select MIPS_L1_CACHE_SHIFT_7
1843 select SYS_SUPPORTS_SMP
1844 select SYS_SUPPORTS_HOTPLUG_CPU
1847 config SYS_HAS_CPU_LOONGSON3
1849 select CPU_SUPPORTS_CPUFREQ
1852 config SYS_HAS_CPU_LOONGSON2E
1855 config SYS_HAS_CPU_LOONGSON2F
1857 select CPU_SUPPORTS_CPUFREQ
1858 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1859 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1861 config SYS_HAS_CPU_LOONGSON1B
1864 config SYS_HAS_CPU_LOONGSON1C
1867 config SYS_HAS_CPU_MIPS32_R1
1870 config SYS_HAS_CPU_MIPS32_R2
1873 config SYS_HAS_CPU_MIPS32_R3_5
1876 config SYS_HAS_CPU_MIPS32_R5
1879 config SYS_HAS_CPU_MIPS32_R6
1882 config SYS_HAS_CPU_MIPS64_R1
1885 config SYS_HAS_CPU_MIPS64_R2
1888 config SYS_HAS_CPU_MIPS64_R6
1891 config SYS_HAS_CPU_R3000
1894 config SYS_HAS_CPU_TX39XX
1897 config SYS_HAS_CPU_VR41XX
1900 config SYS_HAS_CPU_R4300
1903 config SYS_HAS_CPU_R4X00
1906 config SYS_HAS_CPU_TX49XX
1909 config SYS_HAS_CPU_R5000
1912 config SYS_HAS_CPU_R5432
1915 config SYS_HAS_CPU_R5500
1918 config SYS_HAS_CPU_R6000
1921 config SYS_HAS_CPU_NEVADA
1924 config SYS_HAS_CPU_R8000
1927 config SYS_HAS_CPU_R10000
1930 config SYS_HAS_CPU_RM7000
1933 config SYS_HAS_CPU_SB1
1936 config SYS_HAS_CPU_CAVIUM_OCTEON
1939 config SYS_HAS_CPU_BMIPS
1942 config SYS_HAS_CPU_BMIPS32_3300
1944 select SYS_HAS_CPU_BMIPS
1946 config SYS_HAS_CPU_BMIPS4350
1948 select SYS_HAS_CPU_BMIPS
1950 config SYS_HAS_CPU_BMIPS4380
1952 select SYS_HAS_CPU_BMIPS
1954 config SYS_HAS_CPU_BMIPS5000
1956 select SYS_HAS_CPU_BMIPS
1958 config SYS_HAS_CPU_XLR
1961 config SYS_HAS_CPU_XLP
1964 config MIPS_MALTA_PM
1965 depends on MIPS_MALTA
1971 # CPU may reorder R->R, R->W, W->R, W->W
1972 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1974 config WEAK_ORDERING
1978 # CPU may reorder reads and writes beyond LL/SC
1979 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1981 config WEAK_REORDERING_BEYOND_LLSC
1986 # These two indicate any level of the MIPS32 and MIPS64 architecture
1990 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1994 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1997 # These two indicate the revision of the architecture, either Release 1 or Release 2
2001 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2005 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2011 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2013 select HAVE_ARCH_BITREVERSE
2014 select MIPS_ASID_BITS_VARIABLE
2023 config SYS_SUPPORTS_32BIT_KERNEL
2025 config SYS_SUPPORTS_64BIT_KERNEL
2027 config CPU_SUPPORTS_32BIT_KERNEL
2029 config CPU_SUPPORTS_64BIT_KERNEL
2031 config CPU_SUPPORTS_CPUFREQ
2033 config CPU_SUPPORTS_ADDRWINCFG
2035 config CPU_SUPPORTS_HUGEPAGES
2037 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2039 config MIPS_PGD_C0_CONTEXT
2041 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
2044 # Set to y for ptrace access to watch registers.
2046 config HARDWARE_WATCHPOINTS
2048 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2053 prompt "Kernel code model"
2055 You should only select this option if you have a workload that
2056 actually benefits from 64-bit processing or if your machine has
2057 large memory. You will only be presented a single option in this
2058 menu if your system does not support both 32-bit and 64-bit kernels.
2061 bool "32-bit kernel"
2062 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2065 Select this option if you want to build a 32-bit kernel.
2068 bool "64-bit kernel"
2069 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2071 Select this option if you want to build a 64-bit kernel.
2076 bool "KVM Guest Kernel"
2077 depends on BROKEN_ON_SMP
2079 Select this option if building a guest kernel for KVM (Trap & Emulate)
2082 config KVM_GUEST_TIMER_FREQ
2083 int "Count/Compare Timer Frequency (MHz)"
2084 depends on KVM_GUEST
2087 Set this to non-zero if building a guest kernel for KVM to skip RTC
2088 emulation when determining guest CPU Frequency. Instead, the guest's
2089 timer frequency is specified directly.
2091 config MIPS_VA_BITS_48
2092 bool "48 bits virtual memory"
2095 Support a maximum at least 48 bits of application virtual memory.
2096 Default is 40 bits or less, depending on the CPU.
2097 This option result in a small memory overhead for page tables.
2098 This option is only supported with 16k and 64k page sizes.
2102 prompt "Kernel page size"
2103 default PAGE_SIZE_4KB
2105 config PAGE_SIZE_4KB
2107 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2108 depends on !MIPS_VA_BITS_48
2110 This option select the standard 4kB Linux page size. On some
2111 R3000-family processors this is the only available page size. Using
2112 4kB page size will minimize memory consumption and is therefore
2113 recommended for low memory systems.
2115 config PAGE_SIZE_8KB
2117 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2118 depends on !MIPS_VA_BITS_48
2120 Using 8kB page size will result in higher performance kernel at
2121 the price of higher memory consumption. This option is available
2122 only on R8000 and cnMIPS processors. Note that you will need a
2123 suitable Linux distribution to support this.
2125 config PAGE_SIZE_16KB
2127 depends on !CPU_R3000 && !CPU_TX39XX
2129 Using 16kB page size will result in higher performance kernel at
2130 the price of higher memory consumption. This option is available on
2131 all non-R3000 family processors. Note that you will need a suitable
2132 Linux distribution to support this.
2134 config PAGE_SIZE_32KB
2136 depends on CPU_CAVIUM_OCTEON
2137 depends on !MIPS_VA_BITS_48
2139 Using 32kB page size will result in higher performance kernel at
2140 the price of higher memory consumption. This option is available
2141 only on cnMIPS cores. Note that you will need a suitable Linux
2142 distribution to support this.
2144 config PAGE_SIZE_64KB
2146 depends on !CPU_R3000 && !CPU_TX39XX && !CPU_R6000
2148 Using 64kB page size will result in higher performance kernel at
2149 the price of higher memory consumption. This option is available on
2150 all non-R3000 family processor. Not that at the time of this
2151 writing this option is still high experimental.
2155 config FORCE_MAX_ZONEORDER
2156 int "Maximum zone order"
2157 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2158 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2159 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2160 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2161 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2162 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2166 The kernel memory allocator divides physically contiguous memory
2167 blocks into "zones", where each zone is a power of two number of
2168 pages. This option selects the largest power of two that the kernel
2169 keeps in the memory allocator. If you need to allocate very large
2170 blocks of physically contiguous memory, then you may need to
2171 increase this value.
2173 This config option is actually maximum order plus one. For example,
2174 a value of 11 means that the largest free memory block is 2^10 pages.
2176 The page size is not necessarily 4KB. Keep this in mind
2177 when choosing a value for this option.
2182 config IP22_CPU_SCACHE
2187 # Support for a MIPS32 / MIPS64 style S-caches
2189 config MIPS_CPU_SCACHE
2193 config R5000_CPU_SCACHE
2197 config RM7000_CPU_SCACHE
2201 config SIBYTE_DMA_PAGEOPS
2202 bool "Use DMA to clear/copy pages"
2205 Instead of using the CPU to zero and copy pages, use a Data Mover
2206 channel. These DMA channels are otherwise unused by the standard
2207 SiByte Linux port. Seems to give a small performance benefit.
2209 config CPU_HAS_PREFETCH
2212 config CPU_GENERIC_DUMP_TLB
2214 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2218 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2220 config CPU_R4K_CACHE_TLB
2222 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2225 bool "MIPS MT SMP support (1 TC on each available VPE)"
2226 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2227 select CPU_MIPSR2_IRQ_VI
2228 select CPU_MIPSR2_IRQ_EI
2233 select SYS_SUPPORTS_SMP
2234 select SYS_SUPPORTS_SCHED_SMT
2235 select MIPS_PERF_SHARED_TC_COUNTERS
2237 This is a kernel model which is known as SMVP. This is supported
2238 on cores with the MT ASE and uses the available VPEs to implement
2239 virtual processors which supports SMP. This is equivalent to the
2240 Intel Hyperthreading feature. For further information go to
2241 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2247 bool "SMT (multithreading) scheduler support"
2248 depends on SYS_SUPPORTS_SCHED_SMT
2251 SMT scheduler support improves the CPU scheduler's decision making
2252 when dealing with MIPS MT enabled cores at a cost of slightly
2253 increased overhead in some places. If unsure say N here.
2255 config SYS_SUPPORTS_SCHED_SMT
2258 config SYS_SUPPORTS_MULTITHREADING
2261 config MIPS_MT_FPAFF
2262 bool "Dynamic FPU affinity for FP-intensive threads"
2264 depends on MIPS_MT_SMP
2266 config MIPSR2_TO_R6_EMULATOR
2267 bool "MIPS R2-to-R6 emulator"
2268 depends on CPU_MIPSR6 && !SMP
2271 Choose this option if you want to run non-R6 MIPS userland code.
2272 Even if you say 'Y' here, the emulator will still be disabled by
2273 default. You can enable it using the 'mipsr2emu' kernel option.
2274 The only reason this is a build-time option is to save ~14K from the
2276 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2277 depends on SMP && CPU_MIPSR6
2279 config MIPS_VPE_LOADER
2280 bool "VPE loader support."
2281 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2282 select CPU_MIPSR2_IRQ_VI
2283 select CPU_MIPSR2_IRQ_EI
2286 Includes a loader for loading an elf relocatable object
2287 onto another VPE and running it.
2289 config MIPS_VPE_LOADER_CMP
2292 depends on MIPS_VPE_LOADER && MIPS_CMP
2294 config MIPS_VPE_LOADER_MT
2297 depends on MIPS_VPE_LOADER && !MIPS_CMP
2299 config MIPS_VPE_LOADER_TOM
2300 bool "Load VPE program into memory hidden from linux"
2301 depends on MIPS_VPE_LOADER
2304 The loader can use memory that is present but has been hidden from
2305 Linux using the kernel command line option "mem=xxMB". It's up to
2306 you to ensure the amount you put in the option and the space your
2307 program requires is less or equal to the amount physically present.
2309 config MIPS_VPE_APSP_API
2310 bool "Enable support for AP/SP API (RTLX)"
2311 depends on MIPS_VPE_LOADER
2314 config MIPS_VPE_APSP_API_CMP
2317 depends on MIPS_VPE_APSP_API && MIPS_CMP
2319 config MIPS_VPE_APSP_API_MT
2322 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2325 bool "MIPS CMP framework support (DEPRECATED)"
2326 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2329 select SYS_SUPPORTS_SMP
2330 select WEAK_ORDERING
2333 Select this if you are using a bootloader which implements the "CMP
2334 framework" protocol (ie. YAMON) and want your kernel to make use of
2335 its ability to start secondary CPUs.
2337 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2341 bool "MIPS Coherent Processing System support"
2342 depends on SYS_SUPPORTS_MIPS_CPS
2345 select MIPS_CPS_PM if HOTPLUG_CPU
2347 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2348 select SYS_SUPPORTS_HOTPLUG_CPU
2349 select SYS_SUPPORTS_SMP
2350 select WEAK_ORDERING
2352 Select this if you wish to run an SMP kernel across multiple cores
2353 within a MIPS Coherent Processing System. When this option is
2354 enabled the kernel will probe for other cores and boot them with
2355 no external assistance. It is safe to enable this when hardware
2356 support is unavailable.
2369 config SB1_PASS_2_WORKAROUNDS
2371 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2374 config SB1_PASS_2_1_WORKAROUNDS
2376 depends on CPU_SB1 && CPU_SB1_PASS_2
2380 config ARCH_PHYS_ADDR_T_64BIT
2384 prompt "SmartMIPS or microMIPS ASE support"
2386 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2389 Select this if you want neither microMIPS nor SmartMIPS support
2391 config CPU_HAS_SMARTMIPS
2392 depends on SYS_SUPPORTS_SMARTMIPS
2395 SmartMIPS is a extension of the MIPS32 architecture aimed at
2396 increased security at both hardware and software level for
2397 smartcards. Enabling this option will allow proper use of the
2398 SmartMIPS instructions by Linux applications. However a kernel with
2399 this option will not work on a MIPS core without SmartMIPS core. If
2400 you don't know you probably don't have SmartMIPS and should say N
2403 config CPU_MICROMIPS
2404 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2407 When this option is enabled the kernel will be built using the
2413 bool "Support for the MIPS SIMD Architecture"
2414 depends on CPU_SUPPORTS_MSA
2415 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2417 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2418 and a set of SIMD instructions to operate on them. When this option
2419 is enabled the kernel will support allocating & switching MSA
2420 vector register contexts. If you know that your kernel will only be
2421 running on CPUs which do not support MSA or that your userland will
2422 not be making use of it then you may wish to say N here to reduce
2423 the size & complexity of your kernel.
2437 # Vectored interrupt mode is an R2 feature
2439 config CPU_MIPSR2_IRQ_VI
2443 # Extended interrupt mode is an R2 feature
2445 config CPU_MIPSR2_IRQ_EI
2450 depends on !CPU_R3000
2456 config CPU_DADDI_WORKAROUNDS
2459 config CPU_R4000_WORKAROUNDS
2461 select CPU_R4400_WORKAROUNDS
2463 config CPU_R4400_WORKAROUNDS
2466 config MIPS_ASID_SHIFT
2468 default 6 if CPU_R3000 || CPU_TX39XX
2469 default 4 if CPU_R8000
2472 config MIPS_ASID_BITS
2474 default 0 if MIPS_ASID_BITS_VARIABLE
2475 default 6 if CPU_R3000 || CPU_TX39XX
2478 config MIPS_ASID_BITS_VARIABLE
2482 # - Highmem only makes sense for the 32-bit kernel.
2483 # - The current highmem code will only work properly on physically indexed
2484 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2485 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2486 # moment we protect the user and offer the highmem option only on machines
2487 # where it's known to be safe. This will not offer highmem on a few systems
2488 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2489 # indexed CPUs but we're playing safe.
2490 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2491 # know they might have memory configurations that could make use of highmem
2495 bool "High Memory Support"
2496 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2498 config CPU_SUPPORTS_HIGHMEM
2501 config SYS_SUPPORTS_HIGHMEM
2504 config SYS_SUPPORTS_SMARTMIPS
2507 config SYS_SUPPORTS_MICROMIPS
2510 config SYS_SUPPORTS_MIPS16
2513 This option must be set if a kernel might be executed on a MIPS16-
2514 enabled CPU even if MIPS16 is not actually being used. In other
2515 words, it makes the kernel MIPS16-tolerant.
2517 config CPU_SUPPORTS_MSA
2520 config ARCH_FLATMEM_ENABLE
2522 depends on !NUMA && !CPU_LOONGSON2
2524 config ARCH_DISCONTIGMEM_ENABLE
2526 default y if SGI_IP27
2528 Say Y to support efficient handling of discontiguous physical memory,
2529 for architectures which are either NUMA (Non-Uniform Memory Access)
2530 or have huge holes in the physical address space for other reasons.
2531 See <file:Documentation/vm/numa> for more.
2533 config ARCH_SPARSEMEM_ENABLE
2535 select SPARSEMEM_STATIC
2539 depends on SYS_SUPPORTS_NUMA
2541 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2542 Access). This option improves performance on systems with more
2543 than two nodes; on two node systems it is generally better to
2544 leave it disabled; on single node systems disable this option
2547 config SYS_SUPPORTS_NUMA
2551 bool "Relocatable kernel"
2552 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6)
2554 This builds a kernel image that retains relocation information
2555 so it can be loaded someplace besides the default 1MB.
2556 The relocations make the kernel binary about 15% larger,
2557 but are discarded at runtime
2559 config RELOCATION_TABLE_SIZE
2560 hex "Relocation table size"
2561 depends on RELOCATABLE
2562 range 0x0 0x01000000
2563 default "0x00100000"
2565 A table of relocation data will be appended to the kernel binary
2566 and parsed at boot to fix up the relocated kernel.
2568 This option allows the amount of space reserved for the table to be
2569 adjusted, although the default of 1Mb should be ok in most cases.
2571 The build will fail and a valid size suggested if this is too small.
2573 If unsure, leave at the default value.
2575 config RANDOMIZE_BASE
2576 bool "Randomize the address of the kernel image"
2577 depends on RELOCATABLE
2579 Randomizes the physical and virtual address at which the
2580 kernel image is loaded, as a security feature that
2581 deters exploit attempts relying on knowledge of the location
2582 of kernel internals.
2584 Entropy is generated using any coprocessor 0 registers available.
2586 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2590 config RANDOMIZE_BASE_MAX_OFFSET
2591 hex "Maximum kASLR offset" if EXPERT
2592 depends on RANDOMIZE_BASE
2593 range 0x0 0x40000000 if EVA || 64BIT
2594 range 0x0 0x08000000
2595 default "0x01000000"
2597 When kASLR is active, this provides the maximum offset that will
2598 be applied to the kernel image. It should be set according to the
2599 amount of physical RAM available in the target system minus
2600 PHYSICAL_START and must be a power of 2.
2602 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2603 EVA or 64-bit. The default is 16Mb.
2608 depends on NEED_MULTIPLE_NODES
2610 config HW_PERF_EVENTS
2611 bool "Enable hardware performance counter support for perf events"
2612 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2615 Enable hardware performance counter support for perf events. If
2616 disabled, perf events will use software events only.
2621 bool "Multi-Processing support"
2622 depends on SYS_SUPPORTS_SMP
2624 This enables support for systems with more than one CPU. If you have
2625 a system with only one CPU, say N. If you have a system with more
2626 than one CPU, say Y.
2628 If you say N here, the kernel will run on uni- and multiprocessor
2629 machines, but will use only one CPU of a multiprocessor machine. If
2630 you say Y here, the kernel will run on many, but not all,
2631 uniprocessor machines. On a uniprocessor machine, the kernel
2632 will run faster if you say N here.
2634 People using multiprocessor machines who say Y here should also say
2635 Y to "Enhanced Real Time Clock Support", below.
2637 See also the SMP-HOWTO available at
2638 <http://www.tldp.org/docs.html#howto>.
2640 If you don't know what to do here, say N.
2643 bool "Support for hot-pluggable CPUs"
2644 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2646 Say Y here to allow turning CPUs off and on. CPUs can be
2647 controlled through /sys/devices/system/cpu.
2648 (Note: power management support will enable this option
2649 automatically on SMP systems. )
2650 Say N if you want to disable CPU hotplug.
2655 config SYS_SUPPORTS_MIPS_CMP
2658 config SYS_SUPPORTS_MIPS_CPS
2661 config SYS_SUPPORTS_SMP
2664 config NR_CPUS_DEFAULT_4
2667 config NR_CPUS_DEFAULT_8
2670 config NR_CPUS_DEFAULT_16
2673 config NR_CPUS_DEFAULT_32
2676 config NR_CPUS_DEFAULT_64
2680 int "Maximum number of CPUs (2-256)"
2683 default "4" if NR_CPUS_DEFAULT_4
2684 default "8" if NR_CPUS_DEFAULT_8
2685 default "16" if NR_CPUS_DEFAULT_16
2686 default "32" if NR_CPUS_DEFAULT_32
2687 default "64" if NR_CPUS_DEFAULT_64
2689 This allows you to specify the maximum number of CPUs which this
2690 kernel will support. The maximum supported value is 32 for 32-bit
2691 kernel and 64 for 64-bit kernels; the minimum value which makes
2692 sense is 1 for Qemu (useful only for kernel debugging purposes)
2693 and 2 for all others.
2695 This is purely to save memory - each supported CPU adds
2696 approximately eight kilobytes to the kernel image. For best
2697 performance should round up your number of processors to the next
2700 config MIPS_PERF_SHARED_TC_COUNTERS
2704 # Timer Interrupt Frequency Configuration
2708 prompt "Timer frequency"
2711 Allows the configuration of the timer frequency.
2714 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2717 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2720 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2723 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2726 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2729 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2732 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2735 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2739 config SYS_SUPPORTS_24HZ
2742 config SYS_SUPPORTS_48HZ
2745 config SYS_SUPPORTS_100HZ
2748 config SYS_SUPPORTS_128HZ
2751 config SYS_SUPPORTS_250HZ
2754 config SYS_SUPPORTS_256HZ
2757 config SYS_SUPPORTS_1000HZ
2760 config SYS_SUPPORTS_1024HZ
2763 config SYS_SUPPORTS_ARBIT_HZ
2765 default y if !SYS_SUPPORTS_24HZ && \
2766 !SYS_SUPPORTS_48HZ && \
2767 !SYS_SUPPORTS_100HZ && \
2768 !SYS_SUPPORTS_128HZ && \
2769 !SYS_SUPPORTS_250HZ && \
2770 !SYS_SUPPORTS_256HZ && \
2771 !SYS_SUPPORTS_1000HZ && \
2772 !SYS_SUPPORTS_1024HZ
2778 default 100 if HZ_100
2779 default 128 if HZ_128
2780 default 250 if HZ_250
2781 default 256 if HZ_256
2782 default 1000 if HZ_1000
2783 default 1024 if HZ_1024
2786 def_bool HIGH_RES_TIMERS
2788 source "kernel/Kconfig.preempt"
2791 bool "Kexec system call"
2794 kexec is a system call that implements the ability to shutdown your
2795 current kernel, and to start another kernel. It is like a reboot
2796 but it is independent of the system firmware. And like a reboot
2797 you can start any kernel with it, not just Linux.
2799 The name comes from the similarity to the exec system call.
2801 It is an ongoing process to be certain the hardware in a machine
2802 is properly shutdown, so do not be surprised if this code does not
2803 initially work for you. As of this writing the exact hardware
2804 interface is strongly in flux, so no good recommendation can be
2808 bool "Kernel crash dumps"
2810 Generate crash dump after being started by kexec.
2811 This should be normally only set in special crash dump kernels
2812 which are loaded in the main kernel with kexec-tools into
2813 a specially reserved region and then later executed after
2814 a crash by kdump/kexec. The crash dump kernel must be compiled
2815 to a memory address not used by the main kernel or firmware using
2818 config PHYSICAL_START
2819 hex "Physical address where the kernel is loaded"
2820 default "0xffffffff84000000" if 64BIT
2821 default "0x84000000" if 32BIT
2822 depends on CRASH_DUMP
2824 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2825 If you plan to use kernel for capturing the crash dump change
2826 this value to start of the reserved region (the "X" value as
2827 specified in the "crashkernel=YM@XM" command line boot parameter
2828 passed to the panic-ed kernel).
2831 bool "Enable seccomp to safely compute untrusted bytecode"
2835 This kernel feature is useful for number crunching applications
2836 that may need to compute untrusted bytecode during their
2837 execution. By using pipes or other transports made available to
2838 the process as file descriptors supporting the read/write
2839 syscalls, it's possible to isolate those applications in
2840 their own address space using seccomp. Once seccomp is
2841 enabled via /proc/<pid>/seccomp, it cannot be disabled
2842 and the task is only allowed to execute a few safe syscalls
2843 defined by each seccomp mode.
2845 If unsure, say Y. Only embedded should say N here.
2847 config MIPS_O32_FP64_SUPPORT
2848 bool "Support for O32 binaries using 64-bit FP"
2849 depends on 32BIT || MIPS32_O32
2851 When this is enabled, the kernel will support use of 64-bit floating
2852 point registers with binaries using the O32 ABI along with the
2853 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2854 32-bit MIPS systems this support is at the cost of increasing the
2855 size and complexity of the compiled FPU emulator. Thus if you are
2856 running a MIPS32 system and know that none of your userland binaries
2857 will require 64-bit floating point, you may wish to reduce the size
2858 of your kernel & potentially improve FP emulation performance by
2861 Although binutils currently supports use of this flag the details
2862 concerning its effect upon the O32 ABI in userland are still being
2863 worked on. In order to avoid userland becoming dependant upon current
2864 behaviour before the details have been finalised, this option should
2865 be considered experimental and only enabled by those working upon
2873 select OF_EARLY_FLATTREE
2880 prompt "Kernel appended dtb support" if USE_OF
2881 default MIPS_NO_APPENDED_DTB
2883 config MIPS_NO_APPENDED_DTB
2886 Do not enable appended dtb support.
2888 config MIPS_ELF_APPENDED_DTB
2891 With this option, the boot code will look for a device tree binary
2892 DTB) included in the vmlinux ELF section .appended_dtb. By default
2893 it is empty and the DTB can be appended using binutils command
2896 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2898 This is meant as a backward compatiblity convenience for those
2899 systems with a bootloader that can't be upgraded to accommodate
2900 the documented boot protocol using a device tree.
2902 config MIPS_RAW_APPENDED_DTB
2903 bool "vmlinux.bin or vmlinuz.bin"
2905 With this option, the boot code will look for a device tree binary
2906 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2907 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2909 This is meant as a backward compatibility convenience for those
2910 systems with a bootloader that can't be upgraded to accommodate
2911 the documented boot protocol using a device tree.
2913 Beware that there is very little in terms of protection against
2914 this option being confused by leftover garbage in memory that might
2915 look like a DTB header after a reboot if no actual DTB is appended
2916 to vmlinux.bin. Do not leave this option active in a production kernel
2917 if you don't intend to always append a DTB.
2921 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2922 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2923 !MIPS_MALTA && !MIPS_SEAD3 && \
2925 default MIPS_CMDLINE_FROM_BOOTLOADER
2927 config MIPS_CMDLINE_FROM_DTB
2929 bool "Dtb kernel arguments if available"
2931 config MIPS_CMDLINE_DTB_EXTEND
2933 bool "Extend dtb kernel arguments with bootloader arguments"
2935 config MIPS_CMDLINE_FROM_BOOTLOADER
2936 bool "Bootloader kernel arguments if available"
2938 config MIPS_CMDLINE_BUILTIN_EXTEND
2939 depends on CMDLINE_BOOL
2940 bool "Extend builtin kernel arguments with bootloader arguments"
2945 config LOCKDEP_SUPPORT
2949 config STACKTRACE_SUPPORT
2953 config HAVE_LATENCYTOP_SUPPORT
2957 config PGTABLE_LEVELS
2959 default 3 if 64BIT && !PAGE_SIZE_64KB
2962 source "init/Kconfig"
2964 source "kernel/Kconfig.freezer"
2966 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2974 bool "Support for PCI controller"
2975 depends on HW_HAS_PCI
2977 select NO_GENERIC_PCI_IOPORT_MAP
2979 Find out whether you have a PCI motherboard. PCI is the name of a
2980 bus system, i.e. the way the CPU talks to the other stuff inside
2981 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2985 bool "Support for HT-linked PCI"
2987 depends on CPU_LOONGSON3
2991 Loongson family machines use Hyper-Transport bus for inter-core
2992 connection and device connection. The PCI bus is a subordinate
2993 linked at HT. Choose Y for Loongson-3 based machines.
2998 config PCI_DOMAINS_GENERIC
3001 source "drivers/pci/Kconfig"
3004 # ISA support is now enabled via select. Too many systems still have the one
3005 # or other ISA chip on the board that users don't know about so don't expect
3006 # users to choose the right thing ...
3013 depends on HW_HAS_EISA
3015 select GENERIC_ISA_DMA
3017 The Extended Industry Standard Architecture (EISA) bus was
3018 developed as an open alternative to the IBM MicroChannel bus.
3020 The EISA bus provided some of the features of the IBM MicroChannel
3021 bus while maintaining backward compatibility with cards made for
3022 the older ISA bus. The EISA bus saw limited use between 1988 and
3023 1995 when it was made obsolete by the PCI bus.
3025 Say Y here if you are building a kernel for an EISA-based machine.
3029 source "drivers/eisa/Kconfig"
3032 bool "TURBOchannel support"
3033 depends on MACH_DECSTATION
3035 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3036 processors. TURBOchannel programming specifications are available
3038 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3040 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3041 Linux driver support status is documented at:
3042 <http://www.linux-mips.org/wiki/DECstation>
3052 select MIPS_EXTERNAL_TIMER
3060 source "drivers/pcmcia/Kconfig"
3063 tristate "RapidIO support"
3067 If you say Y here, the kernel will include drivers and
3068 infrastructure code to support RapidIO interconnect devices.
3070 source "drivers/rapidio/Kconfig"
3074 menu "Executable file formats"
3076 source "fs/Kconfig.binfmt"
3081 config MIPS32_COMPAT
3087 config SYSVIPC_COMPAT
3091 bool "Kernel support for o32 binaries"
3093 select ARCH_WANT_OLD_COMPAT_IPC
3095 select MIPS32_COMPAT
3096 select SYSVIPC_COMPAT if SYSVIPC
3098 Select this option if you want to run o32 binaries. These are pure
3099 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3100 existing binaries are in this format.
3105 bool "Kernel support for n32 binaries"
3108 select MIPS32_COMPAT
3109 select SYSVIPC_COMPAT if SYSVIPC
3111 Select this option if you want to run n32 binaries. These are
3112 64-bit binaries using 32-bit quantities for addressing and certain
3113 data that would normally be 64-bit. They are used in special
3120 default y if MIPS32_O32 || MIPS32_N32
3125 menu "Power management options"
3127 config ARCH_HIBERNATION_POSSIBLE
3129 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3131 config ARCH_SUSPEND_POSSIBLE
3133 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3135 source "kernel/power/Kconfig"
3139 config MIPS_EXTERNAL_TIMER
3142 menu "CPU Power Management"
3144 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3145 source "drivers/cpufreq/Kconfig"
3148 source "drivers/cpuidle/Kconfig"
3152 source "net/Kconfig"
3154 source "drivers/Kconfig"
3156 source "drivers/firmware/Kconfig"
3160 source "arch/mips/Kconfig.debug"
3162 source "security/Kconfig"
3164 source "crypto/Kconfig"
3166 source "lib/Kconfig"
3168 source "arch/mips/kvm/Kconfig"