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
482 select ZONE_DMA32 if 64BIT
486 This enables support for the MIPS Technologies Malta evaluation
490 bool "Microchip PIC32 Family"
492 This enables support for the Microchip PIC32 family of platforms.
494 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
498 bool "MIPS SEAD3 board"
504 select CLKSRC_MIPS_GIC
506 select CPU_MIPSR2_IRQ_VI
507 select CPU_MIPSR2_IRQ_EI
508 select DMA_NONCOHERENT
513 select SYS_HAS_CPU_MIPS32_R1
514 select SYS_HAS_CPU_MIPS32_R2
515 select SYS_HAS_CPU_MIPS32_R6
516 select SYS_HAS_CPU_MIPS64_R1
517 select SYS_SUPPORTS_32BIT_KERNEL
518 select SYS_SUPPORTS_64BIT_KERNEL
519 select SYS_SUPPORTS_BIG_ENDIAN
520 select SYS_SUPPORTS_LITTLE_ENDIAN
521 select SYS_SUPPORTS_SMARTMIPS
522 select SYS_SUPPORTS_MICROMIPS
523 select SYS_SUPPORTS_MIPS16
524 select SYS_SUPPORTS_RELOCATABLE
525 select USB_EHCI_BIG_ENDIAN_DESC
526 select USB_EHCI_BIG_ENDIAN_MMIO
529 This enables support for the MIPS Technologies SEAD3 evaluation
533 bool "NEC EMMA2RH Mark-eins board"
537 This enables support for the NEC Electronics Mark-eins boards.
540 bool "NEC VR4100 series based machines"
543 select SYS_HAS_CPU_VR41XX
544 select SYS_SUPPORTS_MIPS16
548 bool "NXP STB220 board"
551 Support for NXP Semiconductors STB220 Development Board.
558 Support for NXP Semiconductors STB225 Development Board.
561 bool "PMC-Sierra MSP chipsets"
564 select DMA_NONCOHERENT
566 select NO_EXCEPT_FILL
568 select SYS_HAS_CPU_MIPS32_R1
569 select SYS_HAS_CPU_MIPS32_R2
570 select SYS_SUPPORTS_32BIT_KERNEL
571 select SYS_SUPPORTS_BIG_ENDIAN
572 select SYS_SUPPORTS_MIPS16
575 select SERIAL_8250_CONSOLE
576 select USB_EHCI_BIG_ENDIAN_MMIO
577 select USB_EHCI_BIG_ENDIAN_DESC
579 This adds support for the PMC-Sierra family of Multi-Service
580 Processor System-On-A-Chips. These parts include a number
581 of integrated peripherals, interfaces and DSPs in addition to
582 a variety of MIPS cores.
585 bool "Ralink based machines"
589 select DMA_NONCOHERENT
592 select SYS_HAS_CPU_MIPS32_R1
593 select SYS_HAS_CPU_MIPS32_R2
594 select SYS_SUPPORTS_32BIT_KERNEL
595 select SYS_SUPPORTS_LITTLE_ENDIAN
596 select SYS_SUPPORTS_MIPS16
597 select SYS_HAS_EARLY_PRINTK
599 select ARCH_HAS_RESET_CONTROLLER
600 select RESET_CONTROLLER
603 bool "SGI IP22 (Indy/Indigo2)"
609 select DEFAULT_SGI_PARTITION
610 select DMA_NONCOHERENT
614 select IP22_CPU_SCACHE
616 select GENERIC_ISA_DMA_SUPPORT_BROKEN
618 select SGI_HAS_INDYDOG
624 select SYS_HAS_CPU_R4X00
625 select SYS_HAS_CPU_R5000
627 # Disable EARLY_PRINTK for now since it leads to overwritten prom
628 # memory during early boot on some machines.
630 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
631 # for a more details discussion
633 # select SYS_HAS_EARLY_PRINTK
634 select SYS_SUPPORTS_32BIT_KERNEL
635 select SYS_SUPPORTS_64BIT_KERNEL
636 select SYS_SUPPORTS_BIG_ENDIAN
637 select MIPS_L1_CACHE_SHIFT_7
639 This are the SGI Indy, Challenge S and Indigo2, as well as certain
640 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
641 that runs on these, say Y here.
644 bool "SGI IP27 (Origin200/2000)"
648 select DEFAULT_SGI_PARTITION
650 select SYS_HAS_EARLY_PRINTK
652 select NR_CPUS_DEFAULT_64
653 select SYS_HAS_CPU_R10000
654 select SYS_SUPPORTS_64BIT_KERNEL
655 select SYS_SUPPORTS_BIG_ENDIAN
656 select SYS_SUPPORTS_NUMA
657 select SYS_SUPPORTS_SMP
658 select MIPS_L1_CACHE_SHIFT_7
660 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
661 workstations. To compile a Linux kernel that runs on these, say Y
665 bool "SGI IP28 (Indigo2 R10k)"
671 select DEFAULT_SGI_PARTITION
672 select DMA_NONCOHERENT
673 select GENERIC_ISA_DMA_SUPPORT_BROKEN
679 select SGI_HAS_INDYDOG
685 select SYS_HAS_CPU_R10000
687 # Disable EARLY_PRINTK for now since it leads to overwritten prom
688 # memory during early boot on some machines.
690 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
691 # for a more details discussion
693 # select SYS_HAS_EARLY_PRINTK
694 select SYS_SUPPORTS_64BIT_KERNEL
695 select SYS_SUPPORTS_BIG_ENDIAN
696 select MIPS_L1_CACHE_SHIFT_7
698 This is the SGI Indigo2 with R10000 processor. To compile a Linux
699 kernel that runs on these, say Y here.
708 select DMA_NONCOHERENT
711 select R5000_CPU_SCACHE
712 select RM7000_CPU_SCACHE
713 select SYS_HAS_CPU_R5000
714 select SYS_HAS_CPU_R10000 if BROKEN
715 select SYS_HAS_CPU_RM7000
716 select SYS_HAS_CPU_NEVADA
717 select SYS_SUPPORTS_64BIT_KERNEL
718 select SYS_SUPPORTS_BIG_ENDIAN
720 If you want this kernel to run on SGI O2 workstation, say Y here.
723 bool "Sibyte BCM91120C-CRhine"
726 select SIBYTE_BCM1120
728 select SYS_HAS_CPU_SB1
729 select SYS_SUPPORTS_BIG_ENDIAN
730 select SYS_SUPPORTS_LITTLE_ENDIAN
733 bool "Sibyte BCM91120x-Carmel"
736 select SIBYTE_BCM1120
738 select SYS_HAS_CPU_SB1
739 select SYS_SUPPORTS_BIG_ENDIAN
740 select SYS_SUPPORTS_LITTLE_ENDIAN
743 bool "Sibyte BCM91125C-CRhone"
746 select SIBYTE_BCM1125
748 select SYS_HAS_CPU_SB1
749 select SYS_SUPPORTS_BIG_ENDIAN
750 select SYS_SUPPORTS_HIGHMEM
751 select SYS_SUPPORTS_LITTLE_ENDIAN
754 bool "Sibyte BCM91125E-Rhone"
757 select SIBYTE_BCM1125H
759 select SYS_HAS_CPU_SB1
760 select SYS_SUPPORTS_BIG_ENDIAN
761 select SYS_SUPPORTS_LITTLE_ENDIAN
764 bool "Sibyte BCM91250A-SWARM"
767 select HAVE_PATA_PLATFORM
770 select SYS_HAS_CPU_SB1
771 select SYS_SUPPORTS_BIG_ENDIAN
772 select SYS_SUPPORTS_HIGHMEM
773 select SYS_SUPPORTS_LITTLE_ENDIAN
774 select ZONE_DMA32 if 64BIT
776 config SIBYTE_LITTLESUR
777 bool "Sibyte BCM91250C2-LittleSur"
780 select HAVE_PATA_PLATFORM
783 select SYS_HAS_CPU_SB1
784 select SYS_SUPPORTS_BIG_ENDIAN
785 select SYS_SUPPORTS_HIGHMEM
786 select SYS_SUPPORTS_LITTLE_ENDIAN
788 config SIBYTE_SENTOSA
789 bool "Sibyte BCM91250E-Sentosa"
794 select SYS_HAS_CPU_SB1
795 select SYS_SUPPORTS_BIG_ENDIAN
796 select SYS_SUPPORTS_LITTLE_ENDIAN
799 bool "Sibyte BCM91480B-BigSur"
802 select NR_CPUS_DEFAULT_4
803 select SIBYTE_BCM1x80
805 select SYS_HAS_CPU_SB1
806 select SYS_SUPPORTS_BIG_ENDIAN
807 select SYS_SUPPORTS_HIGHMEM
808 select SYS_SUPPORTS_LITTLE_ENDIAN
809 select ZONE_DMA32 if 64BIT
812 bool "SNI RM200/300/400"
813 select FW_ARC if CPU_LITTLE_ENDIAN
814 select FW_ARC32 if CPU_LITTLE_ENDIAN
815 select FW_SNIPROM if CPU_BIG_ENDIAN
816 select ARCH_MAY_HAVE_PC_FDC
820 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
821 select DMA_NONCOHERENT
822 select GENERIC_ISA_DMA
823 select HAVE_PCSPKR_PLATFORM
830 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
831 select SYS_HAS_CPU_R4X00
832 select SYS_HAS_CPU_R5000
833 select SYS_HAS_CPU_R10000
834 select R5000_CPU_SCACHE
835 select SYS_HAS_EARLY_PRINTK
836 select SYS_SUPPORTS_32BIT_KERNEL
837 select SYS_SUPPORTS_64BIT_KERNEL
838 select SYS_SUPPORTS_BIG_ENDIAN
839 select SYS_SUPPORTS_HIGHMEM
840 select SYS_SUPPORTS_LITTLE_ENDIAN
842 The SNI RM200/300/400 are MIPS-based machines manufactured by
843 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
844 Technology and now in turn merged with Fujitsu. Say Y here to
845 support this machine type.
848 bool "Toshiba TX39 series based machines"
851 bool "Toshiba TX49 series based machines"
853 config MIKROTIK_RB532
854 bool "Mikrotik RB532 boards"
857 select DMA_NONCOHERENT
860 select SYS_HAS_CPU_MIPS32_R1
861 select SYS_SUPPORTS_32BIT_KERNEL
862 select SYS_SUPPORTS_LITTLE_ENDIAN
866 select MIPS_L1_CACHE_SHIFT_4
868 Support the Mikrotik(tm) RouterBoard 532 series,
869 based on the IDT RC32434 SoC.
871 config CAVIUM_OCTEON_SOC
872 bool "Cavium Networks Octeon SoC based boards"
874 select ARCH_PHYS_ADDR_T_64BIT
876 select SYS_SUPPORTS_64BIT_KERNEL
877 select SYS_SUPPORTS_BIG_ENDIAN
879 select EDAC_ATOMIC_SCRUB
880 select SYS_SUPPORTS_LITTLE_ENDIAN
881 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
882 select SYS_HAS_EARLY_PRINTK
883 select SYS_HAS_CPU_CAVIUM_OCTEON
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
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
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
1114 config SYS_SUPPORTS_HOTPLUG_CPU
1117 config MIPS_BONITO64
1132 config NO_IOPORT_MAP
1138 config GENERIC_ISA_DMA
1140 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1143 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1145 select GENERIC_ISA_DMA
1150 config HOLES_IN_ZONE
1153 config SYS_SUPPORTS_RELOCATABLE
1156 Selected if the platform supports relocating the kernel.
1157 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1158 to allow access to command line and entropy sources.
1161 # Endianness selection. Sufficiently obscure so many users don't know what to
1162 # answer,so we try hard to limit the available choices. Also the use of a
1163 # choice statement should be more obvious to the user.
1166 prompt "Endianness selection"
1168 Some MIPS machines can be configured for either little or big endian
1169 byte order. These modes require different kernels and a different
1170 Linux distribution. In general there is one preferred byteorder for a
1171 particular system but some systems are just as commonly used in the
1172 one or the other endianness.
1174 config CPU_BIG_ENDIAN
1176 depends on SYS_SUPPORTS_BIG_ENDIAN
1178 config CPU_LITTLE_ENDIAN
1179 bool "Little endian"
1180 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1187 config SYS_SUPPORTS_APM_EMULATION
1190 config SYS_SUPPORTS_BIG_ENDIAN
1193 config SYS_SUPPORTS_LITTLE_ENDIAN
1196 config SYS_SUPPORTS_HUGETLBFS
1198 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1201 config MIPS_HUGE_TLB_SUPPORT
1202 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1219 config PCI_GT64XXX_PCI0
1222 config NO_EXCEPT_FILL
1229 select DMA_NONCOHERENT
1231 select SWAP_IO_SPACE
1232 select SYS_HAS_CPU_R5500
1233 select SYS_SUPPORTS_32BIT_KERNEL
1234 select SYS_SUPPORTS_64BIT_KERNEL
1235 select SYS_SUPPORTS_BIG_ENDIAN
1242 select DMA_NONCOHERENT
1243 select SYS_HAS_CPU_MIPS32_R2
1244 select SYS_SUPPORTS_32BIT_KERNEL
1245 select SYS_SUPPORTS_LITTLE_ENDIAN
1246 select SYS_SUPPORTS_BIG_ENDIAN
1247 select SYS_SUPPORTS_MIPS16
1248 select CPU_MIPSR2_IRQ_VI
1257 config SWAP_IO_SPACE
1260 config SGI_HAS_INDYDOG
1272 config SGI_HAS_ZILOG
1275 config SGI_HAS_I8042
1278 config DEFAULT_SGI_PARTITION
1290 config MIPS_L1_CACHE_SHIFT_4
1293 config MIPS_L1_CACHE_SHIFT_5
1296 config MIPS_L1_CACHE_SHIFT_6
1299 config MIPS_L1_CACHE_SHIFT_7
1302 config MIPS_L1_CACHE_SHIFT
1304 default "7" if MIPS_L1_CACHE_SHIFT_7
1305 default "6" if MIPS_L1_CACHE_SHIFT_6
1306 default "5" if MIPS_L1_CACHE_SHIFT_5
1307 default "4" if MIPS_L1_CACHE_SHIFT_4
1310 config HAVE_STD_PC_SERIAL_PORT
1314 bool "ARC console support"
1315 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1319 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1324 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1333 menu "CPU selection"
1339 config CPU_LOONGSON3
1340 bool "Loongson 3 CPU"
1341 depends on SYS_HAS_CPU_LOONGSON3
1342 select CPU_SUPPORTS_64BIT_KERNEL
1343 select CPU_SUPPORTS_HIGHMEM
1344 select CPU_SUPPORTS_HUGEPAGES
1345 select WEAK_ORDERING
1346 select WEAK_REORDERING_BEYOND_LLSC
1347 select MIPS_PGD_C0_CONTEXT
1350 The Loongson 3 processor implements the MIPS64R2 instruction
1351 set with many extensions.
1353 config LOONGSON3_ENHANCEMENT
1354 bool "New Loongson 3 CPU Enhancements"
1357 select CPU_HAS_PREFETCH
1358 depends on CPU_LOONGSON3
1360 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1361 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1362 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1363 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1364 Fast TLB refill support, etc.
1366 This option enable those enhancements which are not probed at run
1367 time. If you want a generic kernel to run on all Loongson 3 machines,
1368 please say 'N' here. If you want a high-performance kernel to run on
1369 new Loongson 3 machines only, please say 'Y' here.
1371 config CPU_LOONGSON2E
1373 depends on SYS_HAS_CPU_LOONGSON2E
1374 select CPU_LOONGSON2
1376 The Loongson 2E processor implements the MIPS III instruction set
1377 with many extensions.
1379 It has an internal FPGA northbridge, which is compatible to
1382 config CPU_LOONGSON2F
1384 depends on SYS_HAS_CPU_LOONGSON2F
1385 select CPU_LOONGSON2
1388 The Loongson 2F processor implements the MIPS III instruction set
1389 with many extensions.
1391 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1392 have a similar programming interface with FPGA northbridge used in
1395 config CPU_LOONGSON1B
1397 depends on SYS_HAS_CPU_LOONGSON1B
1398 select CPU_LOONGSON1
1399 select LEDS_GPIO_REGISTER
1401 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1402 release 2 instruction set.
1404 config CPU_LOONGSON1C
1406 depends on SYS_HAS_CPU_LOONGSON1C
1407 select CPU_LOONGSON1
1408 select ARCH_WANT_OPTIONAL_GPIOLIB
1409 select LEDS_GPIO_REGISTER
1411 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1412 release 2 instruction set.
1414 config CPU_MIPS32_R1
1415 bool "MIPS32 Release 1"
1416 depends on SYS_HAS_CPU_MIPS32_R1
1417 select CPU_HAS_PREFETCH
1418 select CPU_SUPPORTS_32BIT_KERNEL
1419 select CPU_SUPPORTS_HIGHMEM
1421 Choose this option to build a kernel for release 1 or later of the
1422 MIPS32 architecture. Most modern embedded systems with a 32-bit
1423 MIPS processor are based on a MIPS32 processor. If you know the
1424 specific type of processor in your system, choose those that one
1425 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1426 Release 2 of the MIPS32 architecture is available since several
1427 years so chances are you even have a MIPS32 Release 2 processor
1428 in which case you should choose CPU_MIPS32_R2 instead for better
1431 config CPU_MIPS32_R2
1432 bool "MIPS32 Release 2"
1433 depends on SYS_HAS_CPU_MIPS32_R2
1434 select CPU_HAS_PREFETCH
1435 select CPU_SUPPORTS_32BIT_KERNEL
1436 select CPU_SUPPORTS_HIGHMEM
1437 select CPU_SUPPORTS_MSA
1440 Choose this option to build a kernel for release 2 or later of the
1441 MIPS32 architecture. Most modern embedded systems with a 32-bit
1442 MIPS processor are based on a MIPS32 processor. If you know the
1443 specific type of processor in your system, choose those that one
1444 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1446 config CPU_MIPS32_R6
1447 bool "MIPS32 Release 6"
1448 depends on SYS_HAS_CPU_MIPS32_R6
1449 select CPU_HAS_PREFETCH
1450 select CPU_SUPPORTS_32BIT_KERNEL
1451 select CPU_SUPPORTS_HIGHMEM
1452 select CPU_SUPPORTS_MSA
1455 select MIPS_O32_FP64_SUPPORT
1457 Choose this option to build a kernel for release 6 or later of the
1458 MIPS32 architecture. New MIPS processors, starting with the Warrior
1459 family, are based on a MIPS32r6 processor. If you own an older
1460 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1462 config CPU_MIPS64_R1
1463 bool "MIPS64 Release 1"
1464 depends on SYS_HAS_CPU_MIPS64_R1
1465 select CPU_HAS_PREFETCH
1466 select CPU_SUPPORTS_32BIT_KERNEL
1467 select CPU_SUPPORTS_64BIT_KERNEL
1468 select CPU_SUPPORTS_HIGHMEM
1469 select CPU_SUPPORTS_HUGEPAGES
1471 Choose this option to build a kernel for release 1 or later of the
1472 MIPS64 architecture. Many modern embedded systems with a 64-bit
1473 MIPS processor are based on a MIPS64 processor. If you know the
1474 specific type of processor in your system, choose those that one
1475 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1476 Release 2 of the MIPS64 architecture is available since several
1477 years so chances are you even have a MIPS64 Release 2 processor
1478 in which case you should choose CPU_MIPS64_R2 instead for better
1481 config CPU_MIPS64_R2
1482 bool "MIPS64 Release 2"
1483 depends on SYS_HAS_CPU_MIPS64_R2
1484 select CPU_HAS_PREFETCH
1485 select CPU_SUPPORTS_32BIT_KERNEL
1486 select CPU_SUPPORTS_64BIT_KERNEL
1487 select CPU_SUPPORTS_HIGHMEM
1488 select CPU_SUPPORTS_HUGEPAGES
1489 select CPU_SUPPORTS_MSA
1492 Choose this option to build a kernel for release 2 or later of the
1493 MIPS64 architecture. Many modern embedded systems with a 64-bit
1494 MIPS processor are based on a MIPS64 processor. If you know the
1495 specific type of processor in your system, choose those that one
1496 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1498 config CPU_MIPS64_R6
1499 bool "MIPS64 Release 6"
1500 depends on SYS_HAS_CPU_MIPS64_R6
1501 select CPU_HAS_PREFETCH
1502 select CPU_SUPPORTS_32BIT_KERNEL
1503 select CPU_SUPPORTS_64BIT_KERNEL
1504 select CPU_SUPPORTS_HIGHMEM
1505 select CPU_SUPPORTS_MSA
1507 select MIPS_O32_FP64_SUPPORT if MIPS32_O32
1510 Choose this option to build a kernel for release 6 or later of the
1511 MIPS64 architecture. New MIPS processors, starting with the Warrior
1512 family, are based on a MIPS64r6 processor. If you own an older
1513 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1517 depends on SYS_HAS_CPU_R3000
1519 select CPU_SUPPORTS_32BIT_KERNEL
1520 select CPU_SUPPORTS_HIGHMEM
1522 Please make sure to pick the right CPU type. Linux/MIPS is not
1523 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1524 *not* work on R4000 machines and vice versa. However, since most
1525 of the supported machines have an R4000 (or similar) CPU, R4x00
1526 might be a safe bet. If the resulting kernel does not work,
1527 try to recompile with R3000.
1531 depends on SYS_HAS_CPU_TX39XX
1532 select CPU_SUPPORTS_32BIT_KERNEL
1536 depends on SYS_HAS_CPU_VR41XX
1537 select CPU_SUPPORTS_32BIT_KERNEL
1538 select CPU_SUPPORTS_64BIT_KERNEL
1540 The options selects support for the NEC VR4100 series of processors.
1541 Only choose this option if you have one of these processors as a
1542 kernel built with this option will not run on any other type of
1543 processor or vice versa.
1547 depends on SYS_HAS_CPU_R4300
1548 select CPU_SUPPORTS_32BIT_KERNEL
1549 select CPU_SUPPORTS_64BIT_KERNEL
1551 MIPS Technologies R4300-series processors.
1555 depends on SYS_HAS_CPU_R4X00
1556 select CPU_SUPPORTS_32BIT_KERNEL
1557 select CPU_SUPPORTS_64BIT_KERNEL
1558 select CPU_SUPPORTS_HUGEPAGES
1560 MIPS Technologies R4000-series processors other than 4300, including
1561 the R4000, R4400, R4600, and 4700.
1565 depends on SYS_HAS_CPU_TX49XX
1566 select CPU_HAS_PREFETCH
1567 select CPU_SUPPORTS_32BIT_KERNEL
1568 select CPU_SUPPORTS_64BIT_KERNEL
1569 select CPU_SUPPORTS_HUGEPAGES
1573 depends on SYS_HAS_CPU_R5000
1574 select CPU_SUPPORTS_32BIT_KERNEL
1575 select CPU_SUPPORTS_64BIT_KERNEL
1576 select CPU_SUPPORTS_HUGEPAGES
1578 MIPS Technologies R5000-series processors other than the Nevada.
1582 depends on SYS_HAS_CPU_R5432
1583 select CPU_SUPPORTS_32BIT_KERNEL
1584 select CPU_SUPPORTS_64BIT_KERNEL
1585 select CPU_SUPPORTS_HUGEPAGES
1589 depends on SYS_HAS_CPU_R5500
1590 select CPU_SUPPORTS_32BIT_KERNEL
1591 select CPU_SUPPORTS_64BIT_KERNEL
1592 select CPU_SUPPORTS_HUGEPAGES
1594 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1599 depends on SYS_HAS_CPU_R6000
1600 select CPU_SUPPORTS_32BIT_KERNEL
1602 MIPS Technologies R6000 and R6000A series processors. Note these
1603 processors are extremely rare and the support for them is incomplete.
1607 depends on SYS_HAS_CPU_NEVADA
1608 select CPU_SUPPORTS_32BIT_KERNEL
1609 select CPU_SUPPORTS_64BIT_KERNEL
1610 select CPU_SUPPORTS_HUGEPAGES
1612 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1616 depends on SYS_HAS_CPU_R8000
1617 select CPU_HAS_PREFETCH
1618 select CPU_SUPPORTS_64BIT_KERNEL
1620 MIPS Technologies R8000 processors. Note these processors are
1621 uncommon and the support for them is incomplete.
1625 depends on SYS_HAS_CPU_R10000
1626 select CPU_HAS_PREFETCH
1627 select CPU_SUPPORTS_32BIT_KERNEL
1628 select CPU_SUPPORTS_64BIT_KERNEL
1629 select CPU_SUPPORTS_HIGHMEM
1630 select CPU_SUPPORTS_HUGEPAGES
1632 MIPS Technologies R10000-series processors.
1636 depends on SYS_HAS_CPU_RM7000
1637 select CPU_HAS_PREFETCH
1638 select CPU_SUPPORTS_32BIT_KERNEL
1639 select CPU_SUPPORTS_64BIT_KERNEL
1640 select CPU_SUPPORTS_HIGHMEM
1641 select CPU_SUPPORTS_HUGEPAGES
1645 depends on SYS_HAS_CPU_SB1
1646 select CPU_SUPPORTS_32BIT_KERNEL
1647 select CPU_SUPPORTS_64BIT_KERNEL
1648 select CPU_SUPPORTS_HIGHMEM
1649 select CPU_SUPPORTS_HUGEPAGES
1650 select WEAK_ORDERING
1652 config CPU_CAVIUM_OCTEON
1653 bool "Cavium Octeon processor"
1654 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1655 select CPU_HAS_PREFETCH
1656 select CPU_SUPPORTS_64BIT_KERNEL
1657 select WEAK_ORDERING
1658 select CPU_SUPPORTS_HIGHMEM
1659 select CPU_SUPPORTS_HUGEPAGES
1660 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1661 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1662 select MIPS_L1_CACHE_SHIFT_7
1664 The Cavium Octeon processor is a highly integrated chip containing
1665 many ethernet hardware widgets for networking tasks. The processor
1666 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1667 Full details can be found at http://www.caviumnetworks.com.
1670 bool "Broadcom BMIPS"
1671 depends on SYS_HAS_CPU_BMIPS
1673 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1674 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1675 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1676 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1677 select CPU_SUPPORTS_32BIT_KERNEL
1678 select DMA_NONCOHERENT
1680 select SWAP_IO_SPACE
1681 select WEAK_ORDERING
1682 select CPU_SUPPORTS_HIGHMEM
1683 select CPU_HAS_PREFETCH
1685 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1688 bool "Netlogic XLR SoC"
1689 depends on SYS_HAS_CPU_XLR
1690 select CPU_SUPPORTS_32BIT_KERNEL
1691 select CPU_SUPPORTS_64BIT_KERNEL
1692 select CPU_SUPPORTS_HIGHMEM
1693 select CPU_SUPPORTS_HUGEPAGES
1694 select WEAK_ORDERING
1695 select WEAK_REORDERING_BEYOND_LLSC
1697 Netlogic Microsystems XLR/XLS processors.
1700 bool "Netlogic XLP SoC"
1701 depends on SYS_HAS_CPU_XLP
1702 select CPU_SUPPORTS_32BIT_KERNEL
1703 select CPU_SUPPORTS_64BIT_KERNEL
1704 select CPU_SUPPORTS_HIGHMEM
1705 select WEAK_ORDERING
1706 select WEAK_REORDERING_BEYOND_LLSC
1707 select CPU_HAS_PREFETCH
1709 select CPU_SUPPORTS_HUGEPAGES
1710 select MIPS_ASID_BITS_VARIABLE
1712 Netlogic Microsystems XLP processors.
1715 config CPU_MIPS32_3_5_FEATURES
1716 bool "MIPS32 Release 3.5 Features"
1717 depends on SYS_HAS_CPU_MIPS32_R3_5
1718 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1720 Choose this option to build a kernel for release 2 or later of the
1721 MIPS32 architecture including features from the 3.5 release such as
1722 support for Enhanced Virtual Addressing (EVA).
1724 config CPU_MIPS32_3_5_EVA
1725 bool "Enhanced Virtual Addressing (EVA)"
1726 depends on CPU_MIPS32_3_5_FEATURES
1730 Choose this option if you want to enable the Enhanced Virtual
1731 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1732 One of its primary benefits is an increase in the maximum size
1733 of lowmem (up to 3GB). If unsure, say 'N' here.
1735 config CPU_MIPS32_R5_FEATURES
1736 bool "MIPS32 Release 5 Features"
1737 depends on SYS_HAS_CPU_MIPS32_R5
1738 depends on CPU_MIPS32_R2
1740 Choose this option to build a kernel for release 2 or later of the
1741 MIPS32 architecture including features from release 5 such as
1742 support for Extended Physical Addressing (XPA).
1744 config CPU_MIPS32_R5_XPA
1745 bool "Extended Physical Addressing (XPA)"
1746 depends on CPU_MIPS32_R5_FEATURES
1748 depends on !PAGE_SIZE_4KB
1749 depends on SYS_SUPPORTS_HIGHMEM
1752 select ARCH_PHYS_ADDR_T_64BIT
1755 Choose this option if you want to enable the Extended Physical
1756 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1757 benefit is to increase physical addressing equal to or greater
1758 than 40 bits. Note that this has the side effect of turning on
1759 64-bit addressing which in turn makes the PTEs 64-bit in size.
1760 If unsure, say 'N' here.
1763 config CPU_NOP_WORKAROUNDS
1766 config CPU_JUMP_WORKAROUNDS
1769 config CPU_LOONGSON2F_WORKAROUNDS
1770 bool "Loongson 2F Workarounds"
1772 select CPU_NOP_WORKAROUNDS
1773 select CPU_JUMP_WORKAROUNDS
1775 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1776 require workarounds. Without workarounds the system may hang
1777 unexpectedly. For more information please refer to the gas
1778 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1780 Loongson 2F03 and later have fixed these issues and no workarounds
1781 are needed. The workarounds have no significant side effect on them
1782 but may decrease the performance of the system so this option should
1783 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1786 If unsure, please say Y.
1787 endif # CPU_LOONGSON2F
1789 config SYS_SUPPORTS_ZBOOT
1791 select HAVE_KERNEL_GZIP
1792 select HAVE_KERNEL_BZIP2
1793 select HAVE_KERNEL_LZ4
1794 select HAVE_KERNEL_LZMA
1795 select HAVE_KERNEL_LZO
1796 select HAVE_KERNEL_XZ
1798 config SYS_SUPPORTS_ZBOOT_UART16550
1800 select SYS_SUPPORTS_ZBOOT
1802 config SYS_SUPPORTS_ZBOOT_UART_PROM
1804 select SYS_SUPPORTS_ZBOOT
1806 config CPU_LOONGSON2
1808 select CPU_SUPPORTS_32BIT_KERNEL
1809 select CPU_SUPPORTS_64BIT_KERNEL
1810 select CPU_SUPPORTS_HIGHMEM
1811 select CPU_SUPPORTS_HUGEPAGES
1813 config CPU_LOONGSON1
1817 select CPU_HAS_PREFETCH
1818 select CPU_SUPPORTS_32BIT_KERNEL
1819 select CPU_SUPPORTS_HIGHMEM
1820 select CPU_SUPPORTS_CPUFREQ
1822 config CPU_BMIPS32_3300
1823 select SMP_UP if SMP
1826 config CPU_BMIPS4350
1828 select SYS_SUPPORTS_SMP
1829 select SYS_SUPPORTS_HOTPLUG_CPU
1831 config CPU_BMIPS4380
1833 select MIPS_L1_CACHE_SHIFT_6
1834 select SYS_SUPPORTS_SMP
1835 select SYS_SUPPORTS_HOTPLUG_CPU
1838 config CPU_BMIPS5000
1840 select MIPS_CPU_SCACHE
1841 select MIPS_L1_CACHE_SHIFT_7
1842 select SYS_SUPPORTS_SMP
1843 select SYS_SUPPORTS_HOTPLUG_CPU
1846 config SYS_HAS_CPU_LOONGSON3
1848 select CPU_SUPPORTS_CPUFREQ
1851 config SYS_HAS_CPU_LOONGSON2E
1854 config SYS_HAS_CPU_LOONGSON2F
1856 select CPU_SUPPORTS_CPUFREQ
1857 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1858 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1860 config SYS_HAS_CPU_LOONGSON1B
1863 config SYS_HAS_CPU_LOONGSON1C
1866 config SYS_HAS_CPU_MIPS32_R1
1869 config SYS_HAS_CPU_MIPS32_R2
1872 config SYS_HAS_CPU_MIPS32_R3_5
1875 config SYS_HAS_CPU_MIPS32_R5
1878 config SYS_HAS_CPU_MIPS32_R6
1881 config SYS_HAS_CPU_MIPS64_R1
1884 config SYS_HAS_CPU_MIPS64_R2
1887 config SYS_HAS_CPU_MIPS64_R6
1890 config SYS_HAS_CPU_R3000
1893 config SYS_HAS_CPU_TX39XX
1896 config SYS_HAS_CPU_VR41XX
1899 config SYS_HAS_CPU_R4300
1902 config SYS_HAS_CPU_R4X00
1905 config SYS_HAS_CPU_TX49XX
1908 config SYS_HAS_CPU_R5000
1911 config SYS_HAS_CPU_R5432
1914 config SYS_HAS_CPU_R5500
1917 config SYS_HAS_CPU_R6000
1920 config SYS_HAS_CPU_NEVADA
1923 config SYS_HAS_CPU_R8000
1926 config SYS_HAS_CPU_R10000
1929 config SYS_HAS_CPU_RM7000
1932 config SYS_HAS_CPU_SB1
1935 config SYS_HAS_CPU_CAVIUM_OCTEON
1938 config SYS_HAS_CPU_BMIPS
1941 config SYS_HAS_CPU_BMIPS32_3300
1943 select SYS_HAS_CPU_BMIPS
1945 config SYS_HAS_CPU_BMIPS4350
1947 select SYS_HAS_CPU_BMIPS
1949 config SYS_HAS_CPU_BMIPS4380
1951 select SYS_HAS_CPU_BMIPS
1953 config SYS_HAS_CPU_BMIPS5000
1955 select SYS_HAS_CPU_BMIPS
1957 config SYS_HAS_CPU_XLR
1960 config SYS_HAS_CPU_XLP
1963 config MIPS_MALTA_PM
1964 depends on MIPS_MALTA
1970 # CPU may reorder R->R, R->W, W->R, W->W
1971 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1973 config WEAK_ORDERING
1977 # CPU may reorder reads and writes beyond LL/SC
1978 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1980 config WEAK_REORDERING_BEYOND_LLSC
1985 # These two indicate any level of the MIPS32 and MIPS64 architecture
1989 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1993 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1996 # These two indicate the revision of the architecture, either Release 1 or Release 2
2000 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2004 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2010 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2012 select HAVE_ARCH_BITREVERSE
2013 select MIPS_ASID_BITS_VARIABLE
2022 config SYS_SUPPORTS_32BIT_KERNEL
2024 config SYS_SUPPORTS_64BIT_KERNEL
2026 config CPU_SUPPORTS_32BIT_KERNEL
2028 config CPU_SUPPORTS_64BIT_KERNEL
2030 config CPU_SUPPORTS_CPUFREQ
2032 config CPU_SUPPORTS_ADDRWINCFG
2034 config CPU_SUPPORTS_HUGEPAGES
2036 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2038 config MIPS_PGD_C0_CONTEXT
2040 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
2043 # Set to y for ptrace access to watch registers.
2045 config HARDWARE_WATCHPOINTS
2047 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2052 prompt "Kernel code model"
2054 You should only select this option if you have a workload that
2055 actually benefits from 64-bit processing or if your machine has
2056 large memory. You will only be presented a single option in this
2057 menu if your system does not support both 32-bit and 64-bit kernels.
2060 bool "32-bit kernel"
2061 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2064 Select this option if you want to build a 32-bit kernel.
2067 bool "64-bit kernel"
2068 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2070 Select this option if you want to build a 64-bit kernel.
2075 bool "KVM Guest Kernel"
2076 depends on BROKEN_ON_SMP
2078 Select this option if building a guest kernel for KVM (Trap & Emulate)
2081 config KVM_GUEST_TIMER_FREQ
2082 int "Count/Compare Timer Frequency (MHz)"
2083 depends on KVM_GUEST
2086 Set this to non-zero if building a guest kernel for KVM to skip RTC
2087 emulation when determining guest CPU Frequency. Instead, the guest's
2088 timer frequency is specified directly.
2090 config MIPS_VA_BITS_48
2091 bool "48 bits virtual memory"
2094 Support a maximum at least 48 bits of application virtual memory.
2095 Default is 40 bits or less, depending on the CPU.
2096 This option result in a small memory overhead for page tables.
2097 This option is only supported with 16k and 64k page sizes.
2101 prompt "Kernel page size"
2102 default PAGE_SIZE_4KB
2104 config PAGE_SIZE_4KB
2106 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2107 depends on !MIPS_VA_BITS_48
2109 This option select the standard 4kB Linux page size. On some
2110 R3000-family processors this is the only available page size. Using
2111 4kB page size will minimize memory consumption and is therefore
2112 recommended for low memory systems.
2114 config PAGE_SIZE_8KB
2116 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2117 depends on !MIPS_VA_BITS_48
2119 Using 8kB page size will result in higher performance kernel at
2120 the price of higher memory consumption. This option is available
2121 only on R8000 and cnMIPS processors. Note that you will need a
2122 suitable Linux distribution to support this.
2124 config PAGE_SIZE_16KB
2126 depends on !CPU_R3000 && !CPU_TX39XX
2128 Using 16kB page size will result in higher performance kernel at
2129 the price of higher memory consumption. This option is available on
2130 all non-R3000 family processors. Note that you will need a suitable
2131 Linux distribution to support this.
2133 config PAGE_SIZE_32KB
2135 depends on CPU_CAVIUM_OCTEON
2136 depends on !MIPS_VA_BITS_48
2138 Using 32kB page size will result in higher performance kernel at
2139 the price of higher memory consumption. This option is available
2140 only on cnMIPS cores. Note that you will need a suitable Linux
2141 distribution to support this.
2143 config PAGE_SIZE_64KB
2145 depends on !CPU_R3000 && !CPU_TX39XX && !CPU_R6000
2147 Using 64kB page size will result in higher performance kernel at
2148 the price of higher memory consumption. This option is available on
2149 all non-R3000 family processor. Not that at the time of this
2150 writing this option is still high experimental.
2154 config FORCE_MAX_ZONEORDER
2155 int "Maximum zone order"
2156 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2157 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2158 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2159 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2160 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2161 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2165 The kernel memory allocator divides physically contiguous memory
2166 blocks into "zones", where each zone is a power of two number of
2167 pages. This option selects the largest power of two that the kernel
2168 keeps in the memory allocator. If you need to allocate very large
2169 blocks of physically contiguous memory, then you may need to
2170 increase this value.
2172 This config option is actually maximum order plus one. For example,
2173 a value of 11 means that the largest free memory block is 2^10 pages.
2175 The page size is not necessarily 4KB. Keep this in mind
2176 when choosing a value for this option.
2181 config IP22_CPU_SCACHE
2186 # Support for a MIPS32 / MIPS64 style S-caches
2188 config MIPS_CPU_SCACHE
2192 config R5000_CPU_SCACHE
2196 config RM7000_CPU_SCACHE
2200 config SIBYTE_DMA_PAGEOPS
2201 bool "Use DMA to clear/copy pages"
2204 Instead of using the CPU to zero and copy pages, use a Data Mover
2205 channel. These DMA channels are otherwise unused by the standard
2206 SiByte Linux port. Seems to give a small performance benefit.
2208 config CPU_HAS_PREFETCH
2211 config CPU_GENERIC_DUMP_TLB
2213 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2217 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2219 config CPU_R4K_CACHE_TLB
2221 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2224 bool "MIPS MT SMP support (1 TC on each available VPE)"
2225 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2226 select CPU_MIPSR2_IRQ_VI
2227 select CPU_MIPSR2_IRQ_EI
2232 select SYS_SUPPORTS_SMP
2233 select SYS_SUPPORTS_SCHED_SMT
2234 select MIPS_PERF_SHARED_TC_COUNTERS
2236 This is a kernel model which is known as SMVP. This is supported
2237 on cores with the MT ASE and uses the available VPEs to implement
2238 virtual processors which supports SMP. This is equivalent to the
2239 Intel Hyperthreading feature. For further information go to
2240 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2246 bool "SMT (multithreading) scheduler support"
2247 depends on SYS_SUPPORTS_SCHED_SMT
2250 SMT scheduler support improves the CPU scheduler's decision making
2251 when dealing with MIPS MT enabled cores at a cost of slightly
2252 increased overhead in some places. If unsure say N here.
2254 config SYS_SUPPORTS_SCHED_SMT
2257 config SYS_SUPPORTS_MULTITHREADING
2260 config MIPS_MT_FPAFF
2261 bool "Dynamic FPU affinity for FP-intensive threads"
2263 depends on MIPS_MT_SMP
2265 config MIPSR2_TO_R6_EMULATOR
2266 bool "MIPS R2-to-R6 emulator"
2267 depends on CPU_MIPSR6 && !SMP
2270 Choose this option if you want to run non-R6 MIPS userland code.
2271 Even if you say 'Y' here, the emulator will still be disabled by
2272 default. You can enable it using the 'mipsr2emu' kernel option.
2273 The only reason this is a build-time option is to save ~14K from the
2275 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2276 depends on SMP && CPU_MIPSR6
2278 config MIPS_VPE_LOADER
2279 bool "VPE loader support."
2280 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2281 select CPU_MIPSR2_IRQ_VI
2282 select CPU_MIPSR2_IRQ_EI
2285 Includes a loader for loading an elf relocatable object
2286 onto another VPE and running it.
2288 config MIPS_VPE_LOADER_CMP
2291 depends on MIPS_VPE_LOADER && MIPS_CMP
2293 config MIPS_VPE_LOADER_MT
2296 depends on MIPS_VPE_LOADER && !MIPS_CMP
2298 config MIPS_VPE_LOADER_TOM
2299 bool "Load VPE program into memory hidden from linux"
2300 depends on MIPS_VPE_LOADER
2303 The loader can use memory that is present but has been hidden from
2304 Linux using the kernel command line option "mem=xxMB". It's up to
2305 you to ensure the amount you put in the option and the space your
2306 program requires is less or equal to the amount physically present.
2308 config MIPS_VPE_APSP_API
2309 bool "Enable support for AP/SP API (RTLX)"
2310 depends on MIPS_VPE_LOADER
2313 config MIPS_VPE_APSP_API_CMP
2316 depends on MIPS_VPE_APSP_API && MIPS_CMP
2318 config MIPS_VPE_APSP_API_MT
2321 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2324 bool "MIPS CMP framework support (DEPRECATED)"
2325 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2328 select SYS_SUPPORTS_SMP
2329 select WEAK_ORDERING
2332 Select this if you are using a bootloader which implements the "CMP
2333 framework" protocol (ie. YAMON) and want your kernel to make use of
2334 its ability to start secondary CPUs.
2336 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2340 bool "MIPS Coherent Processing System support"
2341 depends on SYS_SUPPORTS_MIPS_CPS
2344 select MIPS_CPS_PM if HOTPLUG_CPU
2346 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2347 select SYS_SUPPORTS_HOTPLUG_CPU
2348 select SYS_SUPPORTS_SMP
2349 select WEAK_ORDERING
2351 Select this if you wish to run an SMP kernel across multiple cores
2352 within a MIPS Coherent Processing System. When this option is
2353 enabled the kernel will probe for other cores and boot them with
2354 no external assistance. It is safe to enable this when hardware
2355 support is unavailable.
2368 config SB1_PASS_2_WORKAROUNDS
2370 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2373 config SB1_PASS_2_1_WORKAROUNDS
2375 depends on CPU_SB1 && CPU_SB1_PASS_2
2379 config ARCH_PHYS_ADDR_T_64BIT
2383 prompt "SmartMIPS or microMIPS ASE support"
2385 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2388 Select this if you want neither microMIPS nor SmartMIPS support
2390 config CPU_HAS_SMARTMIPS
2391 depends on SYS_SUPPORTS_SMARTMIPS
2394 SmartMIPS is a extension of the MIPS32 architecture aimed at
2395 increased security at both hardware and software level for
2396 smartcards. Enabling this option will allow proper use of the
2397 SmartMIPS instructions by Linux applications. However a kernel with
2398 this option will not work on a MIPS core without SmartMIPS core. If
2399 you don't know you probably don't have SmartMIPS and should say N
2402 config CPU_MICROMIPS
2403 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2406 When this option is enabled the kernel will be built using the
2412 bool "Support for the MIPS SIMD Architecture"
2413 depends on CPU_SUPPORTS_MSA
2414 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2416 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2417 and a set of SIMD instructions to operate on them. When this option
2418 is enabled the kernel will support allocating & switching MSA
2419 vector register contexts. If you know that your kernel will only be
2420 running on CPUs which do not support MSA or that your userland will
2421 not be making use of it then you may wish to say N here to reduce
2422 the size & complexity of your kernel.
2436 # Vectored interrupt mode is an R2 feature
2438 config CPU_MIPSR2_IRQ_VI
2442 # Extended interrupt mode is an R2 feature
2444 config CPU_MIPSR2_IRQ_EI
2449 depends on !CPU_R3000
2455 config CPU_DADDI_WORKAROUNDS
2458 config CPU_R4000_WORKAROUNDS
2460 select CPU_R4400_WORKAROUNDS
2462 config CPU_R4400_WORKAROUNDS
2465 config MIPS_ASID_SHIFT
2467 default 6 if CPU_R3000 || CPU_TX39XX
2468 default 4 if CPU_R8000
2471 config MIPS_ASID_BITS
2473 default 0 if MIPS_ASID_BITS_VARIABLE
2474 default 6 if CPU_R3000 || CPU_TX39XX
2477 config MIPS_ASID_BITS_VARIABLE
2481 # - Highmem only makes sense for the 32-bit kernel.
2482 # - The current highmem code will only work properly on physically indexed
2483 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2484 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2485 # moment we protect the user and offer the highmem option only on machines
2486 # where it's known to be safe. This will not offer highmem on a few systems
2487 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2488 # indexed CPUs but we're playing safe.
2489 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2490 # know they might have memory configurations that could make use of highmem
2494 bool "High Memory Support"
2495 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2497 config CPU_SUPPORTS_HIGHMEM
2500 config SYS_SUPPORTS_HIGHMEM
2503 config SYS_SUPPORTS_SMARTMIPS
2506 config SYS_SUPPORTS_MICROMIPS
2509 config SYS_SUPPORTS_MIPS16
2512 This option must be set if a kernel might be executed on a MIPS16-
2513 enabled CPU even if MIPS16 is not actually being used. In other
2514 words, it makes the kernel MIPS16-tolerant.
2516 config CPU_SUPPORTS_MSA
2519 config ARCH_FLATMEM_ENABLE
2521 depends on !NUMA && !CPU_LOONGSON2
2523 config ARCH_DISCONTIGMEM_ENABLE
2525 default y if SGI_IP27
2527 Say Y to support efficient handling of discontiguous physical memory,
2528 for architectures which are either NUMA (Non-Uniform Memory Access)
2529 or have huge holes in the physical address space for other reasons.
2530 See <file:Documentation/vm/numa> for more.
2532 config ARCH_SPARSEMEM_ENABLE
2534 select SPARSEMEM_STATIC
2538 depends on SYS_SUPPORTS_NUMA
2540 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2541 Access). This option improves performance on systems with more
2542 than two nodes; on two node systems it is generally better to
2543 leave it disabled; on single node systems disable this option
2546 config SYS_SUPPORTS_NUMA
2550 bool "Relocatable kernel"
2551 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6)
2553 This builds a kernel image that retains relocation information
2554 so it can be loaded someplace besides the default 1MB.
2555 The relocations make the kernel binary about 15% larger,
2556 but are discarded at runtime
2558 config RELOCATION_TABLE_SIZE
2559 hex "Relocation table size"
2560 depends on RELOCATABLE
2561 range 0x0 0x01000000
2562 default "0x00100000"
2564 A table of relocation data will be appended to the kernel binary
2565 and parsed at boot to fix up the relocated kernel.
2567 This option allows the amount of space reserved for the table to be
2568 adjusted, although the default of 1Mb should be ok in most cases.
2570 The build will fail and a valid size suggested if this is too small.
2572 If unsure, leave at the default value.
2574 config RANDOMIZE_BASE
2575 bool "Randomize the address of the kernel image"
2576 depends on RELOCATABLE
2578 Randomizes the physical and virtual address at which the
2579 kernel image is loaded, as a security feature that
2580 deters exploit attempts relying on knowledge of the location
2581 of kernel internals.
2583 Entropy is generated using any coprocessor 0 registers available.
2585 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2589 config RANDOMIZE_BASE_MAX_OFFSET
2590 hex "Maximum kASLR offset" if EXPERT
2591 depends on RANDOMIZE_BASE
2592 range 0x0 0x40000000 if EVA || 64BIT
2593 range 0x0 0x08000000
2594 default "0x01000000"
2596 When kASLR is active, this provides the maximum offset that will
2597 be applied to the kernel image. It should be set according to the
2598 amount of physical RAM available in the target system minus
2599 PHYSICAL_START and must be a power of 2.
2601 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2602 EVA or 64-bit. The default is 16Mb.
2607 depends on NEED_MULTIPLE_NODES
2609 config HW_PERF_EVENTS
2610 bool "Enable hardware performance counter support for perf events"
2611 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2614 Enable hardware performance counter support for perf events. If
2615 disabled, perf events will use software events only.
2620 bool "Multi-Processing support"
2621 depends on SYS_SUPPORTS_SMP
2623 This enables support for systems with more than one CPU. If you have
2624 a system with only one CPU, say N. If you have a system with more
2625 than one CPU, say Y.
2627 If you say N here, the kernel will run on uni- and multiprocessor
2628 machines, but will use only one CPU of a multiprocessor machine. If
2629 you say Y here, the kernel will run on many, but not all,
2630 uniprocessor machines. On a uniprocessor machine, the kernel
2631 will run faster if you say N here.
2633 People using multiprocessor machines who say Y here should also say
2634 Y to "Enhanced Real Time Clock Support", below.
2636 See also the SMP-HOWTO available at
2637 <http://www.tldp.org/docs.html#howto>.
2639 If you don't know what to do here, say N.
2642 bool "Support for hot-pluggable CPUs"
2643 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2645 Say Y here to allow turning CPUs off and on. CPUs can be
2646 controlled through /sys/devices/system/cpu.
2647 (Note: power management support will enable this option
2648 automatically on SMP systems. )
2649 Say N if you want to disable CPU hotplug.
2654 config SYS_SUPPORTS_MIPS_CMP
2657 config SYS_SUPPORTS_MIPS_CPS
2660 config SYS_SUPPORTS_SMP
2663 config NR_CPUS_DEFAULT_4
2666 config NR_CPUS_DEFAULT_8
2669 config NR_CPUS_DEFAULT_16
2672 config NR_CPUS_DEFAULT_32
2675 config NR_CPUS_DEFAULT_64
2679 int "Maximum number of CPUs (2-256)"
2682 default "4" if NR_CPUS_DEFAULT_4
2683 default "8" if NR_CPUS_DEFAULT_8
2684 default "16" if NR_CPUS_DEFAULT_16
2685 default "32" if NR_CPUS_DEFAULT_32
2686 default "64" if NR_CPUS_DEFAULT_64
2688 This allows you to specify the maximum number of CPUs which this
2689 kernel will support. The maximum supported value is 32 for 32-bit
2690 kernel and 64 for 64-bit kernels; the minimum value which makes
2691 sense is 1 for Qemu (useful only for kernel debugging purposes)
2692 and 2 for all others.
2694 This is purely to save memory - each supported CPU adds
2695 approximately eight kilobytes to the kernel image. For best
2696 performance should round up your number of processors to the next
2699 config MIPS_PERF_SHARED_TC_COUNTERS
2703 # Timer Interrupt Frequency Configuration
2707 prompt "Timer frequency"
2710 Allows the configuration of the timer frequency.
2713 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2716 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2719 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2722 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2725 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2728 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2731 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2734 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2738 config SYS_SUPPORTS_24HZ
2741 config SYS_SUPPORTS_48HZ
2744 config SYS_SUPPORTS_100HZ
2747 config SYS_SUPPORTS_128HZ
2750 config SYS_SUPPORTS_250HZ
2753 config SYS_SUPPORTS_256HZ
2756 config SYS_SUPPORTS_1000HZ
2759 config SYS_SUPPORTS_1024HZ
2762 config SYS_SUPPORTS_ARBIT_HZ
2764 default y if !SYS_SUPPORTS_24HZ && \
2765 !SYS_SUPPORTS_48HZ && \
2766 !SYS_SUPPORTS_100HZ && \
2767 !SYS_SUPPORTS_128HZ && \
2768 !SYS_SUPPORTS_250HZ && \
2769 !SYS_SUPPORTS_256HZ && \
2770 !SYS_SUPPORTS_1000HZ && \
2771 !SYS_SUPPORTS_1024HZ
2777 default 100 if HZ_100
2778 default 128 if HZ_128
2779 default 250 if HZ_250
2780 default 256 if HZ_256
2781 default 1000 if HZ_1000
2782 default 1024 if HZ_1024
2785 def_bool HIGH_RES_TIMERS
2787 source "kernel/Kconfig.preempt"
2790 bool "Kexec system call"
2793 kexec is a system call that implements the ability to shutdown your
2794 current kernel, and to start another kernel. It is like a reboot
2795 but it is independent of the system firmware. And like a reboot
2796 you can start any kernel with it, not just Linux.
2798 The name comes from the similarity to the exec system call.
2800 It is an ongoing process to be certain the hardware in a machine
2801 is properly shutdown, so do not be surprised if this code does not
2802 initially work for you. As of this writing the exact hardware
2803 interface is strongly in flux, so no good recommendation can be
2807 bool "Kernel crash dumps"
2809 Generate crash dump after being started by kexec.
2810 This should be normally only set in special crash dump kernels
2811 which are loaded in the main kernel with kexec-tools into
2812 a specially reserved region and then later executed after
2813 a crash by kdump/kexec. The crash dump kernel must be compiled
2814 to a memory address not used by the main kernel or firmware using
2817 config PHYSICAL_START
2818 hex "Physical address where the kernel is loaded"
2819 default "0xffffffff84000000" if 64BIT
2820 default "0x84000000" if 32BIT
2821 depends on CRASH_DUMP
2823 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2824 If you plan to use kernel for capturing the crash dump change
2825 this value to start of the reserved region (the "X" value as
2826 specified in the "crashkernel=YM@XM" command line boot parameter
2827 passed to the panic-ed kernel).
2830 bool "Enable seccomp to safely compute untrusted bytecode"
2834 This kernel feature is useful for number crunching applications
2835 that may need to compute untrusted bytecode during their
2836 execution. By using pipes or other transports made available to
2837 the process as file descriptors supporting the read/write
2838 syscalls, it's possible to isolate those applications in
2839 their own address space using seccomp. Once seccomp is
2840 enabled via /proc/<pid>/seccomp, it cannot be disabled
2841 and the task is only allowed to execute a few safe syscalls
2842 defined by each seccomp mode.
2844 If unsure, say Y. Only embedded should say N here.
2846 config MIPS_O32_FP64_SUPPORT
2847 bool "Support for O32 binaries using 64-bit FP"
2848 depends on 32BIT || MIPS32_O32
2850 When this is enabled, the kernel will support use of 64-bit floating
2851 point registers with binaries using the O32 ABI along with the
2852 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2853 32-bit MIPS systems this support is at the cost of increasing the
2854 size and complexity of the compiled FPU emulator. Thus if you are
2855 running a MIPS32 system and know that none of your userland binaries
2856 will require 64-bit floating point, you may wish to reduce the size
2857 of your kernel & potentially improve FP emulation performance by
2860 Although binutils currently supports use of this flag the details
2861 concerning its effect upon the O32 ABI in userland are still being
2862 worked on. In order to avoid userland becoming dependant upon current
2863 behaviour before the details have been finalised, this option should
2864 be considered experimental and only enabled by those working upon
2872 select OF_EARLY_FLATTREE
2879 prompt "Kernel appended dtb support" if USE_OF
2880 default MIPS_NO_APPENDED_DTB
2882 config MIPS_NO_APPENDED_DTB
2885 Do not enable appended dtb support.
2887 config MIPS_ELF_APPENDED_DTB
2890 With this option, the boot code will look for a device tree binary
2891 DTB) included in the vmlinux ELF section .appended_dtb. By default
2892 it is empty and the DTB can be appended using binutils command
2895 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2897 This is meant as a backward compatiblity convenience for those
2898 systems with a bootloader that can't be upgraded to accommodate
2899 the documented boot protocol using a device tree.
2901 config MIPS_RAW_APPENDED_DTB
2902 bool "vmlinux.bin or vmlinuz.bin"
2904 With this option, the boot code will look for a device tree binary
2905 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2906 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2908 This is meant as a backward compatibility convenience for those
2909 systems with a bootloader that can't be upgraded to accommodate
2910 the documented boot protocol using a device tree.
2912 Beware that there is very little in terms of protection against
2913 this option being confused by leftover garbage in memory that might
2914 look like a DTB header after a reboot if no actual DTB is appended
2915 to vmlinux.bin. Do not leave this option active in a production kernel
2916 if you don't intend to always append a DTB.
2920 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2921 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2922 !MIPS_MALTA && !MIPS_SEAD3 && \
2924 default MIPS_CMDLINE_FROM_BOOTLOADER
2926 config MIPS_CMDLINE_FROM_DTB
2928 bool "Dtb kernel arguments if available"
2930 config MIPS_CMDLINE_DTB_EXTEND
2932 bool "Extend dtb kernel arguments with bootloader arguments"
2934 config MIPS_CMDLINE_FROM_BOOTLOADER
2935 bool "Bootloader kernel arguments if available"
2937 config MIPS_CMDLINE_BUILTIN_EXTEND
2938 depends on CMDLINE_BOOL
2939 bool "Extend builtin kernel arguments with bootloader arguments"
2944 config LOCKDEP_SUPPORT
2948 config STACKTRACE_SUPPORT
2952 config HAVE_LATENCYTOP_SUPPORT
2956 config PGTABLE_LEVELS
2958 default 3 if 64BIT && !PAGE_SIZE_64KB
2961 source "init/Kconfig"
2963 source "kernel/Kconfig.freezer"
2965 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2973 bool "Support for PCI controller"
2974 depends on HW_HAS_PCI
2976 select NO_GENERIC_PCI_IOPORT_MAP
2978 Find out whether you have a PCI motherboard. PCI is the name of a
2979 bus system, i.e. the way the CPU talks to the other stuff inside
2980 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2984 bool "Support for HT-linked PCI"
2986 depends on CPU_LOONGSON3
2990 Loongson family machines use Hyper-Transport bus for inter-core
2991 connection and device connection. The PCI bus is a subordinate
2992 linked at HT. Choose Y for Loongson-3 based machines.
2997 source "drivers/pci/Kconfig"
3000 # ISA support is now enabled via select. Too many systems still have the one
3001 # or other ISA chip on the board that users don't know about so don't expect
3002 # users to choose the right thing ...
3009 depends on HW_HAS_EISA
3011 select GENERIC_ISA_DMA
3013 The Extended Industry Standard Architecture (EISA) bus was
3014 developed as an open alternative to the IBM MicroChannel bus.
3016 The EISA bus provided some of the features of the IBM MicroChannel
3017 bus while maintaining backward compatibility with cards made for
3018 the older ISA bus. The EISA bus saw limited use between 1988 and
3019 1995 when it was made obsolete by the PCI bus.
3021 Say Y here if you are building a kernel for an EISA-based machine.
3025 source "drivers/eisa/Kconfig"
3028 bool "TURBOchannel support"
3029 depends on MACH_DECSTATION
3031 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3032 processors. TURBOchannel programming specifications are available
3034 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3036 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3037 Linux driver support status is documented at:
3038 <http://www.linux-mips.org/wiki/DECstation>
3048 select MIPS_EXTERNAL_TIMER
3056 source "drivers/pcmcia/Kconfig"
3059 tristate "RapidIO support"
3063 If you say Y here, the kernel will include drivers and
3064 infrastructure code to support RapidIO interconnect devices.
3066 source "drivers/rapidio/Kconfig"
3070 menu "Executable file formats"
3072 source "fs/Kconfig.binfmt"
3077 config MIPS32_COMPAT
3083 config SYSVIPC_COMPAT
3087 bool "Kernel support for o32 binaries"
3089 select ARCH_WANT_OLD_COMPAT_IPC
3091 select MIPS32_COMPAT
3092 select SYSVIPC_COMPAT if SYSVIPC
3094 Select this option if you want to run o32 binaries. These are pure
3095 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3096 existing binaries are in this format.
3101 bool "Kernel support for n32 binaries"
3104 select MIPS32_COMPAT
3105 select SYSVIPC_COMPAT if SYSVIPC
3107 Select this option if you want to run n32 binaries. These are
3108 64-bit binaries using 32-bit quantities for addressing and certain
3109 data that would normally be 64-bit. They are used in special
3116 default y if MIPS32_O32 || MIPS32_N32
3121 menu "Power management options"
3123 config ARCH_HIBERNATION_POSSIBLE
3125 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3127 config ARCH_SUSPEND_POSSIBLE
3129 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3131 source "kernel/power/Kconfig"
3135 config MIPS_EXTERNAL_TIMER
3138 menu "CPU Power Management"
3140 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3141 source "drivers/cpufreq/Kconfig"
3144 source "drivers/cpuidle/Kconfig"
3148 source "net/Kconfig"
3150 source "drivers/Kconfig"
3152 source "drivers/firmware/Kconfig"
3156 source "arch/mips/Kconfig.debug"
3158 source "security/Kconfig"
3160 source "crypto/Kconfig"
3162 source "lib/Kconfig"
3164 source "arch/mips/kvm/Kconfig"