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
1102 config DMA_PERDEV_COHERENT
1104 select DMA_MAYBE_COHERENT
1109 config DMA_NONCOHERENT
1111 select NEED_DMA_MAP_STATE
1113 config NEED_DMA_MAP_STATE
1116 config SYS_HAS_EARLY_PRINTK
1119 config SYS_SUPPORTS_HOTPLUG_CPU
1122 config MIPS_BONITO64
1137 config NO_IOPORT_MAP
1143 config GENERIC_ISA_DMA
1145 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1148 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1150 select GENERIC_ISA_DMA
1155 config HOLES_IN_ZONE
1158 config SYS_SUPPORTS_RELOCATABLE
1161 Selected if the platform supports relocating the kernel.
1162 The platform must provide plat_get_fdt() if it selects CONFIG_USE_OF
1163 to allow access to command line and entropy sources.
1166 # Endianness selection. Sufficiently obscure so many users don't know what to
1167 # answer,so we try hard to limit the available choices. Also the use of a
1168 # choice statement should be more obvious to the user.
1171 prompt "Endianness selection"
1173 Some MIPS machines can be configured for either little or big endian
1174 byte order. These modes require different kernels and a different
1175 Linux distribution. In general there is one preferred byteorder for a
1176 particular system but some systems are just as commonly used in the
1177 one or the other endianness.
1179 config CPU_BIG_ENDIAN
1181 depends on SYS_SUPPORTS_BIG_ENDIAN
1183 config CPU_LITTLE_ENDIAN
1184 bool "Little endian"
1185 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1192 config SYS_SUPPORTS_APM_EMULATION
1195 config SYS_SUPPORTS_BIG_ENDIAN
1198 config SYS_SUPPORTS_LITTLE_ENDIAN
1201 config SYS_SUPPORTS_HUGETLBFS
1203 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1206 config MIPS_HUGE_TLB_SUPPORT
1207 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1224 config PCI_GT64XXX_PCI0
1227 config NO_EXCEPT_FILL
1234 select DMA_NONCOHERENT
1236 select SWAP_IO_SPACE
1237 select SYS_HAS_CPU_R5500
1238 select SYS_SUPPORTS_32BIT_KERNEL
1239 select SYS_SUPPORTS_64BIT_KERNEL
1240 select SYS_SUPPORTS_BIG_ENDIAN
1247 select DMA_NONCOHERENT
1248 select SYS_HAS_CPU_MIPS32_R2
1249 select SYS_SUPPORTS_32BIT_KERNEL
1250 select SYS_SUPPORTS_LITTLE_ENDIAN
1251 select SYS_SUPPORTS_BIG_ENDIAN
1252 select SYS_SUPPORTS_MIPS16
1253 select CPU_MIPSR2_IRQ_VI
1262 config SWAP_IO_SPACE
1265 config SGI_HAS_INDYDOG
1277 config SGI_HAS_ZILOG
1280 config SGI_HAS_I8042
1283 config DEFAULT_SGI_PARTITION
1295 config MIPS_L1_CACHE_SHIFT_4
1298 config MIPS_L1_CACHE_SHIFT_5
1301 config MIPS_L1_CACHE_SHIFT_6
1304 config MIPS_L1_CACHE_SHIFT_7
1307 config MIPS_L1_CACHE_SHIFT
1309 default "7" if MIPS_L1_CACHE_SHIFT_7
1310 default "6" if MIPS_L1_CACHE_SHIFT_6
1311 default "5" if MIPS_L1_CACHE_SHIFT_5
1312 default "4" if MIPS_L1_CACHE_SHIFT_4
1315 config HAVE_STD_PC_SERIAL_PORT
1319 bool "ARC console support"
1320 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1324 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1329 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1338 menu "CPU selection"
1344 config CPU_LOONGSON3
1345 bool "Loongson 3 CPU"
1346 depends on SYS_HAS_CPU_LOONGSON3
1347 select CPU_SUPPORTS_64BIT_KERNEL
1348 select CPU_SUPPORTS_HIGHMEM
1349 select CPU_SUPPORTS_HUGEPAGES
1350 select WEAK_ORDERING
1351 select WEAK_REORDERING_BEYOND_LLSC
1352 select MIPS_PGD_C0_CONTEXT
1355 The Loongson 3 processor implements the MIPS64R2 instruction
1356 set with many extensions.
1358 config LOONGSON3_ENHANCEMENT
1359 bool "New Loongson 3 CPU Enhancements"
1362 select CPU_HAS_PREFETCH
1363 depends on CPU_LOONGSON3
1365 New Loongson 3 CPU (since Loongson-3A R2, as opposed to Loongson-3A
1366 R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
1367 FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPv2 ASE, User
1368 Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
1369 Fast TLB refill support, etc.
1371 This option enable those enhancements which are not probed at run
1372 time. If you want a generic kernel to run on all Loongson 3 machines,
1373 please say 'N' here. If you want a high-performance kernel to run on
1374 new Loongson 3 machines only, please say 'Y' here.
1376 config CPU_LOONGSON2E
1378 depends on SYS_HAS_CPU_LOONGSON2E
1379 select CPU_LOONGSON2
1381 The Loongson 2E processor implements the MIPS III instruction set
1382 with many extensions.
1384 It has an internal FPGA northbridge, which is compatible to
1387 config CPU_LOONGSON2F
1389 depends on SYS_HAS_CPU_LOONGSON2F
1390 select CPU_LOONGSON2
1393 The Loongson 2F processor implements the MIPS III instruction set
1394 with many extensions.
1396 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1397 have a similar programming interface with FPGA northbridge used in
1400 config CPU_LOONGSON1B
1402 depends on SYS_HAS_CPU_LOONGSON1B
1403 select CPU_LOONGSON1
1404 select LEDS_GPIO_REGISTER
1406 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1407 release 2 instruction set.
1409 config CPU_LOONGSON1C
1411 depends on SYS_HAS_CPU_LOONGSON1C
1412 select CPU_LOONGSON1
1413 select ARCH_WANT_OPTIONAL_GPIOLIB
1414 select LEDS_GPIO_REGISTER
1416 The Loongson 1C is a 32-bit SoC, which implements the MIPS32
1417 release 2 instruction set.
1419 config CPU_MIPS32_R1
1420 bool "MIPS32 Release 1"
1421 depends on SYS_HAS_CPU_MIPS32_R1
1422 select CPU_HAS_PREFETCH
1423 select CPU_SUPPORTS_32BIT_KERNEL
1424 select CPU_SUPPORTS_HIGHMEM
1426 Choose this option to build a kernel for release 1 or later of the
1427 MIPS32 architecture. Most modern embedded systems with a 32-bit
1428 MIPS processor are based on a MIPS32 processor. If you know the
1429 specific type of processor in your system, choose those that one
1430 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1431 Release 2 of the MIPS32 architecture is available since several
1432 years so chances are you even have a MIPS32 Release 2 processor
1433 in which case you should choose CPU_MIPS32_R2 instead for better
1436 config CPU_MIPS32_R2
1437 bool "MIPS32 Release 2"
1438 depends on SYS_HAS_CPU_MIPS32_R2
1439 select CPU_HAS_PREFETCH
1440 select CPU_SUPPORTS_32BIT_KERNEL
1441 select CPU_SUPPORTS_HIGHMEM
1442 select CPU_SUPPORTS_MSA
1445 Choose this option to build a kernel for release 2 or later of the
1446 MIPS32 architecture. Most modern embedded systems with a 32-bit
1447 MIPS processor are based on a MIPS32 processor. If you know the
1448 specific type of processor in your system, choose those that one
1449 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1451 config CPU_MIPS32_R6
1452 bool "MIPS32 Release 6"
1453 depends on SYS_HAS_CPU_MIPS32_R6
1454 select CPU_HAS_PREFETCH
1455 select CPU_SUPPORTS_32BIT_KERNEL
1456 select CPU_SUPPORTS_HIGHMEM
1457 select CPU_SUPPORTS_MSA
1460 select MIPS_O32_FP64_SUPPORT
1462 Choose this option to build a kernel for release 6 or later of the
1463 MIPS32 architecture. New MIPS processors, starting with the Warrior
1464 family, are based on a MIPS32r6 processor. If you own an older
1465 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1467 config CPU_MIPS64_R1
1468 bool "MIPS64 Release 1"
1469 depends on SYS_HAS_CPU_MIPS64_R1
1470 select CPU_HAS_PREFETCH
1471 select CPU_SUPPORTS_32BIT_KERNEL
1472 select CPU_SUPPORTS_64BIT_KERNEL
1473 select CPU_SUPPORTS_HIGHMEM
1474 select CPU_SUPPORTS_HUGEPAGES
1476 Choose this option to build a kernel for release 1 or later of the
1477 MIPS64 architecture. Many modern embedded systems with a 64-bit
1478 MIPS processor are based on a MIPS64 processor. If you know the
1479 specific type of processor in your system, choose those that one
1480 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1481 Release 2 of the MIPS64 architecture is available since several
1482 years so chances are you even have a MIPS64 Release 2 processor
1483 in which case you should choose CPU_MIPS64_R2 instead for better
1486 config CPU_MIPS64_R2
1487 bool "MIPS64 Release 2"
1488 depends on SYS_HAS_CPU_MIPS64_R2
1489 select CPU_HAS_PREFETCH
1490 select CPU_SUPPORTS_32BIT_KERNEL
1491 select CPU_SUPPORTS_64BIT_KERNEL
1492 select CPU_SUPPORTS_HIGHMEM
1493 select CPU_SUPPORTS_HUGEPAGES
1494 select CPU_SUPPORTS_MSA
1497 Choose this option to build a kernel for release 2 or later of the
1498 MIPS64 architecture. Many modern embedded systems with a 64-bit
1499 MIPS processor are based on a MIPS64 processor. If you know the
1500 specific type of processor in your system, choose those that one
1501 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1503 config CPU_MIPS64_R6
1504 bool "MIPS64 Release 6"
1505 depends on SYS_HAS_CPU_MIPS64_R6
1506 select CPU_HAS_PREFETCH
1507 select CPU_SUPPORTS_32BIT_KERNEL
1508 select CPU_SUPPORTS_64BIT_KERNEL
1509 select CPU_SUPPORTS_HIGHMEM
1510 select CPU_SUPPORTS_MSA
1512 select MIPS_O32_FP64_SUPPORT if MIPS32_O32
1515 Choose this option to build a kernel for release 6 or later of the
1516 MIPS64 architecture. New MIPS processors, starting with the Warrior
1517 family, are based on a MIPS64r6 processor. If you own an older
1518 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1522 depends on SYS_HAS_CPU_R3000
1524 select CPU_SUPPORTS_32BIT_KERNEL
1525 select CPU_SUPPORTS_HIGHMEM
1527 Please make sure to pick the right CPU type. Linux/MIPS is not
1528 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1529 *not* work on R4000 machines and vice versa. However, since most
1530 of the supported machines have an R4000 (or similar) CPU, R4x00
1531 might be a safe bet. If the resulting kernel does not work,
1532 try to recompile with R3000.
1536 depends on SYS_HAS_CPU_TX39XX
1537 select CPU_SUPPORTS_32BIT_KERNEL
1541 depends on SYS_HAS_CPU_VR41XX
1542 select CPU_SUPPORTS_32BIT_KERNEL
1543 select CPU_SUPPORTS_64BIT_KERNEL
1545 The options selects support for the NEC VR4100 series of processors.
1546 Only choose this option if you have one of these processors as a
1547 kernel built with this option will not run on any other type of
1548 processor or vice versa.
1552 depends on SYS_HAS_CPU_R4300
1553 select CPU_SUPPORTS_32BIT_KERNEL
1554 select CPU_SUPPORTS_64BIT_KERNEL
1556 MIPS Technologies R4300-series processors.
1560 depends on SYS_HAS_CPU_R4X00
1561 select CPU_SUPPORTS_32BIT_KERNEL
1562 select CPU_SUPPORTS_64BIT_KERNEL
1563 select CPU_SUPPORTS_HUGEPAGES
1565 MIPS Technologies R4000-series processors other than 4300, including
1566 the R4000, R4400, R4600, and 4700.
1570 depends on SYS_HAS_CPU_TX49XX
1571 select CPU_HAS_PREFETCH
1572 select CPU_SUPPORTS_32BIT_KERNEL
1573 select CPU_SUPPORTS_64BIT_KERNEL
1574 select CPU_SUPPORTS_HUGEPAGES
1578 depends on SYS_HAS_CPU_R5000
1579 select CPU_SUPPORTS_32BIT_KERNEL
1580 select CPU_SUPPORTS_64BIT_KERNEL
1581 select CPU_SUPPORTS_HUGEPAGES
1583 MIPS Technologies R5000-series processors other than the Nevada.
1587 depends on SYS_HAS_CPU_R5432
1588 select CPU_SUPPORTS_32BIT_KERNEL
1589 select CPU_SUPPORTS_64BIT_KERNEL
1590 select CPU_SUPPORTS_HUGEPAGES
1594 depends on SYS_HAS_CPU_R5500
1595 select CPU_SUPPORTS_32BIT_KERNEL
1596 select CPU_SUPPORTS_64BIT_KERNEL
1597 select CPU_SUPPORTS_HUGEPAGES
1599 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1604 depends on SYS_HAS_CPU_R6000
1605 select CPU_SUPPORTS_32BIT_KERNEL
1607 MIPS Technologies R6000 and R6000A series processors. Note these
1608 processors are extremely rare and the support for them is incomplete.
1612 depends on SYS_HAS_CPU_NEVADA
1613 select CPU_SUPPORTS_32BIT_KERNEL
1614 select CPU_SUPPORTS_64BIT_KERNEL
1615 select CPU_SUPPORTS_HUGEPAGES
1617 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1621 depends on SYS_HAS_CPU_R8000
1622 select CPU_HAS_PREFETCH
1623 select CPU_SUPPORTS_64BIT_KERNEL
1625 MIPS Technologies R8000 processors. Note these processors are
1626 uncommon and the support for them is incomplete.
1630 depends on SYS_HAS_CPU_R10000
1631 select CPU_HAS_PREFETCH
1632 select CPU_SUPPORTS_32BIT_KERNEL
1633 select CPU_SUPPORTS_64BIT_KERNEL
1634 select CPU_SUPPORTS_HIGHMEM
1635 select CPU_SUPPORTS_HUGEPAGES
1637 MIPS Technologies R10000-series processors.
1641 depends on SYS_HAS_CPU_RM7000
1642 select CPU_HAS_PREFETCH
1643 select CPU_SUPPORTS_32BIT_KERNEL
1644 select CPU_SUPPORTS_64BIT_KERNEL
1645 select CPU_SUPPORTS_HIGHMEM
1646 select CPU_SUPPORTS_HUGEPAGES
1650 depends on SYS_HAS_CPU_SB1
1651 select CPU_SUPPORTS_32BIT_KERNEL
1652 select CPU_SUPPORTS_64BIT_KERNEL
1653 select CPU_SUPPORTS_HIGHMEM
1654 select CPU_SUPPORTS_HUGEPAGES
1655 select WEAK_ORDERING
1657 config CPU_CAVIUM_OCTEON
1658 bool "Cavium Octeon processor"
1659 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1660 select CPU_HAS_PREFETCH
1661 select CPU_SUPPORTS_64BIT_KERNEL
1662 select WEAK_ORDERING
1663 select CPU_SUPPORTS_HIGHMEM
1664 select CPU_SUPPORTS_HUGEPAGES
1665 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1666 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1667 select MIPS_L1_CACHE_SHIFT_7
1669 The Cavium Octeon processor is a highly integrated chip containing
1670 many ethernet hardware widgets for networking tasks. The processor
1671 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1672 Full details can be found at http://www.caviumnetworks.com.
1675 bool "Broadcom BMIPS"
1676 depends on SYS_HAS_CPU_BMIPS
1678 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1679 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1680 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1681 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1682 select CPU_SUPPORTS_32BIT_KERNEL
1683 select DMA_NONCOHERENT
1685 select SWAP_IO_SPACE
1686 select WEAK_ORDERING
1687 select CPU_SUPPORTS_HIGHMEM
1688 select CPU_HAS_PREFETCH
1690 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1693 bool "Netlogic XLR SoC"
1694 depends on SYS_HAS_CPU_XLR
1695 select CPU_SUPPORTS_32BIT_KERNEL
1696 select CPU_SUPPORTS_64BIT_KERNEL
1697 select CPU_SUPPORTS_HIGHMEM
1698 select CPU_SUPPORTS_HUGEPAGES
1699 select WEAK_ORDERING
1700 select WEAK_REORDERING_BEYOND_LLSC
1702 Netlogic Microsystems XLR/XLS processors.
1705 bool "Netlogic XLP SoC"
1706 depends on SYS_HAS_CPU_XLP
1707 select CPU_SUPPORTS_32BIT_KERNEL
1708 select CPU_SUPPORTS_64BIT_KERNEL
1709 select CPU_SUPPORTS_HIGHMEM
1710 select WEAK_ORDERING
1711 select WEAK_REORDERING_BEYOND_LLSC
1712 select CPU_HAS_PREFETCH
1714 select CPU_SUPPORTS_HUGEPAGES
1715 select MIPS_ASID_BITS_VARIABLE
1717 Netlogic Microsystems XLP processors.
1720 config CPU_MIPS32_3_5_FEATURES
1721 bool "MIPS32 Release 3.5 Features"
1722 depends on SYS_HAS_CPU_MIPS32_R3_5
1723 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1725 Choose this option to build a kernel for release 2 or later of the
1726 MIPS32 architecture including features from the 3.5 release such as
1727 support for Enhanced Virtual Addressing (EVA).
1729 config CPU_MIPS32_3_5_EVA
1730 bool "Enhanced Virtual Addressing (EVA)"
1731 depends on CPU_MIPS32_3_5_FEATURES
1735 Choose this option if you want to enable the Enhanced Virtual
1736 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1737 One of its primary benefits is an increase in the maximum size
1738 of lowmem (up to 3GB). If unsure, say 'N' here.
1740 config CPU_MIPS32_R5_FEATURES
1741 bool "MIPS32 Release 5 Features"
1742 depends on SYS_HAS_CPU_MIPS32_R5
1743 depends on CPU_MIPS32_R2
1745 Choose this option to build a kernel for release 2 or later of the
1746 MIPS32 architecture including features from release 5 such as
1747 support for Extended Physical Addressing (XPA).
1749 config CPU_MIPS32_R5_XPA
1750 bool "Extended Physical Addressing (XPA)"
1751 depends on CPU_MIPS32_R5_FEATURES
1753 depends on !PAGE_SIZE_4KB
1754 depends on SYS_SUPPORTS_HIGHMEM
1757 select ARCH_PHYS_ADDR_T_64BIT
1760 Choose this option if you want to enable the Extended Physical
1761 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1762 benefit is to increase physical addressing equal to or greater
1763 than 40 bits. Note that this has the side effect of turning on
1764 64-bit addressing which in turn makes the PTEs 64-bit in size.
1765 If unsure, say 'N' here.
1768 config CPU_NOP_WORKAROUNDS
1771 config CPU_JUMP_WORKAROUNDS
1774 config CPU_LOONGSON2F_WORKAROUNDS
1775 bool "Loongson 2F Workarounds"
1777 select CPU_NOP_WORKAROUNDS
1778 select CPU_JUMP_WORKAROUNDS
1780 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1781 require workarounds. Without workarounds the system may hang
1782 unexpectedly. For more information please refer to the gas
1783 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1785 Loongson 2F03 and later have fixed these issues and no workarounds
1786 are needed. The workarounds have no significant side effect on them
1787 but may decrease the performance of the system so this option should
1788 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1791 If unsure, please say Y.
1792 endif # CPU_LOONGSON2F
1794 config SYS_SUPPORTS_ZBOOT
1796 select HAVE_KERNEL_GZIP
1797 select HAVE_KERNEL_BZIP2
1798 select HAVE_KERNEL_LZ4
1799 select HAVE_KERNEL_LZMA
1800 select HAVE_KERNEL_LZO
1801 select HAVE_KERNEL_XZ
1803 config SYS_SUPPORTS_ZBOOT_UART16550
1805 select SYS_SUPPORTS_ZBOOT
1807 config SYS_SUPPORTS_ZBOOT_UART_PROM
1809 select SYS_SUPPORTS_ZBOOT
1811 config CPU_LOONGSON2
1813 select CPU_SUPPORTS_32BIT_KERNEL
1814 select CPU_SUPPORTS_64BIT_KERNEL
1815 select CPU_SUPPORTS_HIGHMEM
1816 select CPU_SUPPORTS_HUGEPAGES
1818 config CPU_LOONGSON1
1822 select CPU_HAS_PREFETCH
1823 select CPU_SUPPORTS_32BIT_KERNEL
1824 select CPU_SUPPORTS_HIGHMEM
1825 select CPU_SUPPORTS_CPUFREQ
1827 config CPU_BMIPS32_3300
1828 select SMP_UP if SMP
1831 config CPU_BMIPS4350
1833 select SYS_SUPPORTS_SMP
1834 select SYS_SUPPORTS_HOTPLUG_CPU
1836 config CPU_BMIPS4380
1838 select MIPS_L1_CACHE_SHIFT_6
1839 select SYS_SUPPORTS_SMP
1840 select SYS_SUPPORTS_HOTPLUG_CPU
1843 config CPU_BMIPS5000
1845 select MIPS_CPU_SCACHE
1846 select MIPS_L1_CACHE_SHIFT_7
1847 select SYS_SUPPORTS_SMP
1848 select SYS_SUPPORTS_HOTPLUG_CPU
1851 config SYS_HAS_CPU_LOONGSON3
1853 select CPU_SUPPORTS_CPUFREQ
1856 config SYS_HAS_CPU_LOONGSON2E
1859 config SYS_HAS_CPU_LOONGSON2F
1861 select CPU_SUPPORTS_CPUFREQ
1862 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1863 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1865 config SYS_HAS_CPU_LOONGSON1B
1868 config SYS_HAS_CPU_LOONGSON1C
1871 config SYS_HAS_CPU_MIPS32_R1
1874 config SYS_HAS_CPU_MIPS32_R2
1877 config SYS_HAS_CPU_MIPS32_R3_5
1880 config SYS_HAS_CPU_MIPS32_R5
1883 config SYS_HAS_CPU_MIPS32_R6
1886 config SYS_HAS_CPU_MIPS64_R1
1889 config SYS_HAS_CPU_MIPS64_R2
1892 config SYS_HAS_CPU_MIPS64_R6
1895 config SYS_HAS_CPU_R3000
1898 config SYS_HAS_CPU_TX39XX
1901 config SYS_HAS_CPU_VR41XX
1904 config SYS_HAS_CPU_R4300
1907 config SYS_HAS_CPU_R4X00
1910 config SYS_HAS_CPU_TX49XX
1913 config SYS_HAS_CPU_R5000
1916 config SYS_HAS_CPU_R5432
1919 config SYS_HAS_CPU_R5500
1922 config SYS_HAS_CPU_R6000
1925 config SYS_HAS_CPU_NEVADA
1928 config SYS_HAS_CPU_R8000
1931 config SYS_HAS_CPU_R10000
1934 config SYS_HAS_CPU_RM7000
1937 config SYS_HAS_CPU_SB1
1940 config SYS_HAS_CPU_CAVIUM_OCTEON
1943 config SYS_HAS_CPU_BMIPS
1946 config SYS_HAS_CPU_BMIPS32_3300
1948 select SYS_HAS_CPU_BMIPS
1950 config SYS_HAS_CPU_BMIPS4350
1952 select SYS_HAS_CPU_BMIPS
1954 config SYS_HAS_CPU_BMIPS4380
1956 select SYS_HAS_CPU_BMIPS
1958 config SYS_HAS_CPU_BMIPS5000
1960 select SYS_HAS_CPU_BMIPS
1962 config SYS_HAS_CPU_XLR
1965 config SYS_HAS_CPU_XLP
1968 config MIPS_MALTA_PM
1969 depends on MIPS_MALTA
1975 # CPU may reorder R->R, R->W, W->R, W->W
1976 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1978 config WEAK_ORDERING
1982 # CPU may reorder reads and writes beyond LL/SC
1983 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1985 config WEAK_REORDERING_BEYOND_LLSC
1990 # These two indicate any level of the MIPS32 and MIPS64 architecture
1994 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1998 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
2001 # These two indicate the revision of the architecture, either Release 1 or Release 2
2005 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
2009 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
2015 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
2017 select HAVE_ARCH_BITREVERSE
2018 select MIPS_ASID_BITS_VARIABLE
2027 config SYS_SUPPORTS_32BIT_KERNEL
2029 config SYS_SUPPORTS_64BIT_KERNEL
2031 config CPU_SUPPORTS_32BIT_KERNEL
2033 config CPU_SUPPORTS_64BIT_KERNEL
2035 config CPU_SUPPORTS_CPUFREQ
2037 config CPU_SUPPORTS_ADDRWINCFG
2039 config CPU_SUPPORTS_HUGEPAGES
2041 config CPU_SUPPORTS_UNCACHED_ACCELERATED
2043 config MIPS_PGD_C0_CONTEXT
2045 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
2048 # Set to y for ptrace access to watch registers.
2050 config HARDWARE_WATCHPOINTS
2052 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2057 prompt "Kernel code model"
2059 You should only select this option if you have a workload that
2060 actually benefits from 64-bit processing or if your machine has
2061 large memory. You will only be presented a single option in this
2062 menu if your system does not support both 32-bit and 64-bit kernels.
2065 bool "32-bit kernel"
2066 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2069 Select this option if you want to build a 32-bit kernel.
2072 bool "64-bit kernel"
2073 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2075 Select this option if you want to build a 64-bit kernel.
2080 bool "KVM Guest Kernel"
2081 depends on BROKEN_ON_SMP
2083 Select this option if building a guest kernel for KVM (Trap & Emulate)
2086 config KVM_GUEST_TIMER_FREQ
2087 int "Count/Compare Timer Frequency (MHz)"
2088 depends on KVM_GUEST
2091 Set this to non-zero if building a guest kernel for KVM to skip RTC
2092 emulation when determining guest CPU Frequency. Instead, the guest's
2093 timer frequency is specified directly.
2095 config MIPS_VA_BITS_48
2096 bool "48 bits virtual memory"
2099 Support a maximum at least 48 bits of application virtual memory.
2100 Default is 40 bits or less, depending on the CPU.
2101 This option result in a small memory overhead for page tables.
2102 This option is only supported with 16k and 64k page sizes.
2106 prompt "Kernel page size"
2107 default PAGE_SIZE_4KB
2109 config PAGE_SIZE_4KB
2111 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2112 depends on !MIPS_VA_BITS_48
2114 This option select the standard 4kB Linux page size. On some
2115 R3000-family processors this is the only available page size. Using
2116 4kB page size will minimize memory consumption and is therefore
2117 recommended for low memory systems.
2119 config PAGE_SIZE_8KB
2121 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2122 depends on !MIPS_VA_BITS_48
2124 Using 8kB page size will result in higher performance kernel at
2125 the price of higher memory consumption. This option is available
2126 only on R8000 and cnMIPS processors. Note that you will need a
2127 suitable Linux distribution to support this.
2129 config PAGE_SIZE_16KB
2131 depends on !CPU_R3000 && !CPU_TX39XX
2133 Using 16kB page size will result in higher performance kernel at
2134 the price of higher memory consumption. This option is available on
2135 all non-R3000 family processors. Note that you will need a suitable
2136 Linux distribution to support this.
2138 config PAGE_SIZE_32KB
2140 depends on CPU_CAVIUM_OCTEON
2141 depends on !MIPS_VA_BITS_48
2143 Using 32kB page size will result in higher performance kernel at
2144 the price of higher memory consumption. This option is available
2145 only on cnMIPS cores. Note that you will need a suitable Linux
2146 distribution to support this.
2148 config PAGE_SIZE_64KB
2150 depends on !CPU_R3000 && !CPU_TX39XX && !CPU_R6000
2152 Using 64kB page size will result in higher performance kernel at
2153 the price of higher memory consumption. This option is available on
2154 all non-R3000 family processor. Not that at the time of this
2155 writing this option is still high experimental.
2159 config FORCE_MAX_ZONEORDER
2160 int "Maximum zone order"
2161 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2162 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2163 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2164 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2165 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2166 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2170 The kernel memory allocator divides physically contiguous memory
2171 blocks into "zones", where each zone is a power of two number of
2172 pages. This option selects the largest power of two that the kernel
2173 keeps in the memory allocator. If you need to allocate very large
2174 blocks of physically contiguous memory, then you may need to
2175 increase this value.
2177 This config option is actually maximum order plus one. For example,
2178 a value of 11 means that the largest free memory block is 2^10 pages.
2180 The page size is not necessarily 4KB. Keep this in mind
2181 when choosing a value for this option.
2186 config IP22_CPU_SCACHE
2191 # Support for a MIPS32 / MIPS64 style S-caches
2193 config MIPS_CPU_SCACHE
2197 config R5000_CPU_SCACHE
2201 config RM7000_CPU_SCACHE
2205 config SIBYTE_DMA_PAGEOPS
2206 bool "Use DMA to clear/copy pages"
2209 Instead of using the CPU to zero and copy pages, use a Data Mover
2210 channel. These DMA channels are otherwise unused by the standard
2211 SiByte Linux port. Seems to give a small performance benefit.
2213 config CPU_HAS_PREFETCH
2216 config CPU_GENERIC_DUMP_TLB
2218 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2222 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2224 config CPU_R4K_CACHE_TLB
2226 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2229 bool "MIPS MT SMP support (1 TC on each available VPE)"
2230 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2231 select CPU_MIPSR2_IRQ_VI
2232 select CPU_MIPSR2_IRQ_EI
2237 select SYS_SUPPORTS_SMP
2238 select SYS_SUPPORTS_SCHED_SMT
2239 select MIPS_PERF_SHARED_TC_COUNTERS
2241 This is a kernel model which is known as SMVP. This is supported
2242 on cores with the MT ASE and uses the available VPEs to implement
2243 virtual processors which supports SMP. This is equivalent to the
2244 Intel Hyperthreading feature. For further information go to
2245 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2251 bool "SMT (multithreading) scheduler support"
2252 depends on SYS_SUPPORTS_SCHED_SMT
2255 SMT scheduler support improves the CPU scheduler's decision making
2256 when dealing with MIPS MT enabled cores at a cost of slightly
2257 increased overhead in some places. If unsure say N here.
2259 config SYS_SUPPORTS_SCHED_SMT
2262 config SYS_SUPPORTS_MULTITHREADING
2265 config MIPS_MT_FPAFF
2266 bool "Dynamic FPU affinity for FP-intensive threads"
2268 depends on MIPS_MT_SMP
2270 config MIPSR2_TO_R6_EMULATOR
2271 bool "MIPS R2-to-R6 emulator"
2272 depends on CPU_MIPSR6 && !SMP
2275 Choose this option if you want to run non-R6 MIPS userland code.
2276 Even if you say 'Y' here, the emulator will still be disabled by
2277 default. You can enable it using the 'mipsr2emu' kernel option.
2278 The only reason this is a build-time option is to save ~14K from the
2280 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2281 depends on SMP && CPU_MIPSR6
2283 config MIPS_VPE_LOADER
2284 bool "VPE loader support."
2285 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2286 select CPU_MIPSR2_IRQ_VI
2287 select CPU_MIPSR2_IRQ_EI
2290 Includes a loader for loading an elf relocatable object
2291 onto another VPE and running it.
2293 config MIPS_VPE_LOADER_CMP
2296 depends on MIPS_VPE_LOADER && MIPS_CMP
2298 config MIPS_VPE_LOADER_MT
2301 depends on MIPS_VPE_LOADER && !MIPS_CMP
2303 config MIPS_VPE_LOADER_TOM
2304 bool "Load VPE program into memory hidden from linux"
2305 depends on MIPS_VPE_LOADER
2308 The loader can use memory that is present but has been hidden from
2309 Linux using the kernel command line option "mem=xxMB". It's up to
2310 you to ensure the amount you put in the option and the space your
2311 program requires is less or equal to the amount physically present.
2313 config MIPS_VPE_APSP_API
2314 bool "Enable support for AP/SP API (RTLX)"
2315 depends on MIPS_VPE_LOADER
2318 config MIPS_VPE_APSP_API_CMP
2321 depends on MIPS_VPE_APSP_API && MIPS_CMP
2323 config MIPS_VPE_APSP_API_MT
2326 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2329 bool "MIPS CMP framework support (DEPRECATED)"
2330 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2333 select SYS_SUPPORTS_SMP
2334 select WEAK_ORDERING
2337 Select this if you are using a bootloader which implements the "CMP
2338 framework" protocol (ie. YAMON) and want your kernel to make use of
2339 its ability to start secondary CPUs.
2341 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2345 bool "MIPS Coherent Processing System support"
2346 depends on SYS_SUPPORTS_MIPS_CPS
2349 select MIPS_CPS_PM if HOTPLUG_CPU
2351 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2352 select SYS_SUPPORTS_HOTPLUG_CPU
2353 select SYS_SUPPORTS_SMP
2354 select WEAK_ORDERING
2356 Select this if you wish to run an SMP kernel across multiple cores
2357 within a MIPS Coherent Processing System. When this option is
2358 enabled the kernel will probe for other cores and boot them with
2359 no external assistance. It is safe to enable this when hardware
2360 support is unavailable.
2373 config SB1_PASS_2_WORKAROUNDS
2375 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2378 config SB1_PASS_2_1_WORKAROUNDS
2380 depends on CPU_SB1 && CPU_SB1_PASS_2
2384 config ARCH_PHYS_ADDR_T_64BIT
2388 prompt "SmartMIPS or microMIPS ASE support"
2390 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2393 Select this if you want neither microMIPS nor SmartMIPS support
2395 config CPU_HAS_SMARTMIPS
2396 depends on SYS_SUPPORTS_SMARTMIPS
2399 SmartMIPS is a extension of the MIPS32 architecture aimed at
2400 increased security at both hardware and software level for
2401 smartcards. Enabling this option will allow proper use of the
2402 SmartMIPS instructions by Linux applications. However a kernel with
2403 this option will not work on a MIPS core without SmartMIPS core. If
2404 you don't know you probably don't have SmartMIPS and should say N
2407 config CPU_MICROMIPS
2408 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2411 When this option is enabled the kernel will be built using the
2417 bool "Support for the MIPS SIMD Architecture"
2418 depends on CPU_SUPPORTS_MSA
2419 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2421 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2422 and a set of SIMD instructions to operate on them. When this option
2423 is enabled the kernel will support allocating & switching MSA
2424 vector register contexts. If you know that your kernel will only be
2425 running on CPUs which do not support MSA or that your userland will
2426 not be making use of it then you may wish to say N here to reduce
2427 the size & complexity of your kernel.
2441 # Vectored interrupt mode is an R2 feature
2443 config CPU_MIPSR2_IRQ_VI
2447 # Extended interrupt mode is an R2 feature
2449 config CPU_MIPSR2_IRQ_EI
2454 depends on !CPU_R3000
2460 config CPU_DADDI_WORKAROUNDS
2463 config CPU_R4000_WORKAROUNDS
2465 select CPU_R4400_WORKAROUNDS
2467 config CPU_R4400_WORKAROUNDS
2470 config MIPS_ASID_SHIFT
2472 default 6 if CPU_R3000 || CPU_TX39XX
2473 default 4 if CPU_R8000
2476 config MIPS_ASID_BITS
2478 default 0 if MIPS_ASID_BITS_VARIABLE
2479 default 6 if CPU_R3000 || CPU_TX39XX
2482 config MIPS_ASID_BITS_VARIABLE
2486 # - Highmem only makes sense for the 32-bit kernel.
2487 # - The current highmem code will only work properly on physically indexed
2488 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2489 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2490 # moment we protect the user and offer the highmem option only on machines
2491 # where it's known to be safe. This will not offer highmem on a few systems
2492 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2493 # indexed CPUs but we're playing safe.
2494 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2495 # know they might have memory configurations that could make use of highmem
2499 bool "High Memory Support"
2500 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2502 config CPU_SUPPORTS_HIGHMEM
2505 config SYS_SUPPORTS_HIGHMEM
2508 config SYS_SUPPORTS_SMARTMIPS
2511 config SYS_SUPPORTS_MICROMIPS
2514 config SYS_SUPPORTS_MIPS16
2517 This option must be set if a kernel might be executed on a MIPS16-
2518 enabled CPU even if MIPS16 is not actually being used. In other
2519 words, it makes the kernel MIPS16-tolerant.
2521 config CPU_SUPPORTS_MSA
2524 config ARCH_FLATMEM_ENABLE
2526 depends on !NUMA && !CPU_LOONGSON2
2528 config ARCH_DISCONTIGMEM_ENABLE
2530 default y if SGI_IP27
2532 Say Y to support efficient handling of discontiguous physical memory,
2533 for architectures which are either NUMA (Non-Uniform Memory Access)
2534 or have huge holes in the physical address space for other reasons.
2535 See <file:Documentation/vm/numa> for more.
2537 config ARCH_SPARSEMEM_ENABLE
2539 select SPARSEMEM_STATIC
2543 depends on SYS_SUPPORTS_NUMA
2545 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2546 Access). This option improves performance on systems with more
2547 than two nodes; on two node systems it is generally better to
2548 leave it disabled; on single node systems disable this option
2551 config SYS_SUPPORTS_NUMA
2555 bool "Relocatable kernel"
2556 depends on SYS_SUPPORTS_RELOCATABLE && (CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_MIPS32_R6 || CPU_MIPS64_R6)
2558 This builds a kernel image that retains relocation information
2559 so it can be loaded someplace besides the default 1MB.
2560 The relocations make the kernel binary about 15% larger,
2561 but are discarded at runtime
2563 config RELOCATION_TABLE_SIZE
2564 hex "Relocation table size"
2565 depends on RELOCATABLE
2566 range 0x0 0x01000000
2567 default "0x00100000"
2569 A table of relocation data will be appended to the kernel binary
2570 and parsed at boot to fix up the relocated kernel.
2572 This option allows the amount of space reserved for the table to be
2573 adjusted, although the default of 1Mb should be ok in most cases.
2575 The build will fail and a valid size suggested if this is too small.
2577 If unsure, leave at the default value.
2579 config RANDOMIZE_BASE
2580 bool "Randomize the address of the kernel image"
2581 depends on RELOCATABLE
2583 Randomizes the physical and virtual address at which the
2584 kernel image is loaded, as a security feature that
2585 deters exploit attempts relying on knowledge of the location
2586 of kernel internals.
2588 Entropy is generated using any coprocessor 0 registers available.
2590 The kernel will be offset by up to RANDOMIZE_BASE_MAX_OFFSET.
2594 config RANDOMIZE_BASE_MAX_OFFSET
2595 hex "Maximum kASLR offset" if EXPERT
2596 depends on RANDOMIZE_BASE
2597 range 0x0 0x40000000 if EVA || 64BIT
2598 range 0x0 0x08000000
2599 default "0x01000000"
2601 When kASLR is active, this provides the maximum offset that will
2602 be applied to the kernel image. It should be set according to the
2603 amount of physical RAM available in the target system minus
2604 PHYSICAL_START and must be a power of 2.
2606 This is limited by the size of KSEG0, 256Mb on 32-bit or 1Gb with
2607 EVA or 64-bit. The default is 16Mb.
2612 depends on NEED_MULTIPLE_NODES
2614 config HW_PERF_EVENTS
2615 bool "Enable hardware performance counter support for perf events"
2616 depends on PERF_EVENTS && !OPROFILE && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2619 Enable hardware performance counter support for perf events. If
2620 disabled, perf events will use software events only.
2625 bool "Multi-Processing support"
2626 depends on SYS_SUPPORTS_SMP
2628 This enables support for systems with more than one CPU. If you have
2629 a system with only one CPU, say N. If you have a system with more
2630 than one CPU, say Y.
2632 If you say N here, the kernel will run on uni- and multiprocessor
2633 machines, but will use only one CPU of a multiprocessor machine. If
2634 you say Y here, the kernel will run on many, but not all,
2635 uniprocessor machines. On a uniprocessor machine, the kernel
2636 will run faster if you say N here.
2638 People using multiprocessor machines who say Y here should also say
2639 Y to "Enhanced Real Time Clock Support", below.
2641 See also the SMP-HOWTO available at
2642 <http://www.tldp.org/docs.html#howto>.
2644 If you don't know what to do here, say N.
2647 bool "Support for hot-pluggable CPUs"
2648 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
2650 Say Y here to allow turning CPUs off and on. CPUs can be
2651 controlled through /sys/devices/system/cpu.
2652 (Note: power management support will enable this option
2653 automatically on SMP systems. )
2654 Say N if you want to disable CPU hotplug.
2659 config SYS_SUPPORTS_MIPS_CMP
2662 config SYS_SUPPORTS_MIPS_CPS
2665 config SYS_SUPPORTS_SMP
2668 config NR_CPUS_DEFAULT_4
2671 config NR_CPUS_DEFAULT_8
2674 config NR_CPUS_DEFAULT_16
2677 config NR_CPUS_DEFAULT_32
2680 config NR_CPUS_DEFAULT_64
2684 int "Maximum number of CPUs (2-256)"
2687 default "4" if NR_CPUS_DEFAULT_4
2688 default "8" if NR_CPUS_DEFAULT_8
2689 default "16" if NR_CPUS_DEFAULT_16
2690 default "32" if NR_CPUS_DEFAULT_32
2691 default "64" if NR_CPUS_DEFAULT_64
2693 This allows you to specify the maximum number of CPUs which this
2694 kernel will support. The maximum supported value is 32 for 32-bit
2695 kernel and 64 for 64-bit kernels; the minimum value which makes
2696 sense is 1 for Qemu (useful only for kernel debugging purposes)
2697 and 2 for all others.
2699 This is purely to save memory - each supported CPU adds
2700 approximately eight kilobytes to the kernel image. For best
2701 performance should round up your number of processors to the next
2704 config MIPS_PERF_SHARED_TC_COUNTERS
2708 # Timer Interrupt Frequency Configuration
2712 prompt "Timer frequency"
2715 Allows the configuration of the timer frequency.
2718 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2721 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2724 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2727 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2730 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2733 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2736 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2739 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2743 config SYS_SUPPORTS_24HZ
2746 config SYS_SUPPORTS_48HZ
2749 config SYS_SUPPORTS_100HZ
2752 config SYS_SUPPORTS_128HZ
2755 config SYS_SUPPORTS_250HZ
2758 config SYS_SUPPORTS_256HZ
2761 config SYS_SUPPORTS_1000HZ
2764 config SYS_SUPPORTS_1024HZ
2767 config SYS_SUPPORTS_ARBIT_HZ
2769 default y if !SYS_SUPPORTS_24HZ && \
2770 !SYS_SUPPORTS_48HZ && \
2771 !SYS_SUPPORTS_100HZ && \
2772 !SYS_SUPPORTS_128HZ && \
2773 !SYS_SUPPORTS_250HZ && \
2774 !SYS_SUPPORTS_256HZ && \
2775 !SYS_SUPPORTS_1000HZ && \
2776 !SYS_SUPPORTS_1024HZ
2782 default 100 if HZ_100
2783 default 128 if HZ_128
2784 default 250 if HZ_250
2785 default 256 if HZ_256
2786 default 1000 if HZ_1000
2787 default 1024 if HZ_1024
2790 def_bool HIGH_RES_TIMERS
2792 source "kernel/Kconfig.preempt"
2795 bool "Kexec system call"
2798 kexec is a system call that implements the ability to shutdown your
2799 current kernel, and to start another kernel. It is like a reboot
2800 but it is independent of the system firmware. And like a reboot
2801 you can start any kernel with it, not just Linux.
2803 The name comes from the similarity to the exec system call.
2805 It is an ongoing process to be certain the hardware in a machine
2806 is properly shutdown, so do not be surprised if this code does not
2807 initially work for you. As of this writing the exact hardware
2808 interface is strongly in flux, so no good recommendation can be
2812 bool "Kernel crash dumps"
2814 Generate crash dump after being started by kexec.
2815 This should be normally only set in special crash dump kernels
2816 which are loaded in the main kernel with kexec-tools into
2817 a specially reserved region and then later executed after
2818 a crash by kdump/kexec. The crash dump kernel must be compiled
2819 to a memory address not used by the main kernel or firmware using
2822 config PHYSICAL_START
2823 hex "Physical address where the kernel is loaded"
2824 default "0xffffffff84000000" if 64BIT
2825 default "0x84000000" if 32BIT
2826 depends on CRASH_DUMP
2828 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2829 If you plan to use kernel for capturing the crash dump change
2830 this value to start of the reserved region (the "X" value as
2831 specified in the "crashkernel=YM@XM" command line boot parameter
2832 passed to the panic-ed kernel).
2835 bool "Enable seccomp to safely compute untrusted bytecode"
2839 This kernel feature is useful for number crunching applications
2840 that may need to compute untrusted bytecode during their
2841 execution. By using pipes or other transports made available to
2842 the process as file descriptors supporting the read/write
2843 syscalls, it's possible to isolate those applications in
2844 their own address space using seccomp. Once seccomp is
2845 enabled via /proc/<pid>/seccomp, it cannot be disabled
2846 and the task is only allowed to execute a few safe syscalls
2847 defined by each seccomp mode.
2849 If unsure, say Y. Only embedded should say N here.
2851 config MIPS_O32_FP64_SUPPORT
2852 bool "Support for O32 binaries using 64-bit FP"
2853 depends on 32BIT || MIPS32_O32
2855 When this is enabled, the kernel will support use of 64-bit floating
2856 point registers with binaries using the O32 ABI along with the
2857 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2858 32-bit MIPS systems this support is at the cost of increasing the
2859 size and complexity of the compiled FPU emulator. Thus if you are
2860 running a MIPS32 system and know that none of your userland binaries
2861 will require 64-bit floating point, you may wish to reduce the size
2862 of your kernel & potentially improve FP emulation performance by
2865 Although binutils currently supports use of this flag the details
2866 concerning its effect upon the O32 ABI in userland are still being
2867 worked on. In order to avoid userland becoming dependant upon current
2868 behaviour before the details have been finalised, this option should
2869 be considered experimental and only enabled by those working upon
2877 select OF_EARLY_FLATTREE
2884 prompt "Kernel appended dtb support" if USE_OF
2885 default MIPS_NO_APPENDED_DTB
2887 config MIPS_NO_APPENDED_DTB
2890 Do not enable appended dtb support.
2892 config MIPS_ELF_APPENDED_DTB
2895 With this option, the boot code will look for a device tree binary
2896 DTB) included in the vmlinux ELF section .appended_dtb. By default
2897 it is empty and the DTB can be appended using binutils command
2900 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2902 This is meant as a backward compatiblity convenience for those
2903 systems with a bootloader that can't be upgraded to accommodate
2904 the documented boot protocol using a device tree.
2906 config MIPS_RAW_APPENDED_DTB
2907 bool "vmlinux.bin or vmlinuz.bin"
2909 With this option, the boot code will look for a device tree binary
2910 DTB) appended to raw vmlinux.bin or vmlinuz.bin.
2911 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2913 This is meant as a backward compatibility convenience for those
2914 systems with a bootloader that can't be upgraded to accommodate
2915 the documented boot protocol using a device tree.
2917 Beware that there is very little in terms of protection against
2918 this option being confused by leftover garbage in memory that might
2919 look like a DTB header after a reboot if no actual DTB is appended
2920 to vmlinux.bin. Do not leave this option active in a production kernel
2921 if you don't intend to always append a DTB.
2925 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2926 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2927 !MIPS_MALTA && !MIPS_SEAD3 && \
2929 default MIPS_CMDLINE_FROM_BOOTLOADER
2931 config MIPS_CMDLINE_FROM_DTB
2933 bool "Dtb kernel arguments if available"
2935 config MIPS_CMDLINE_DTB_EXTEND
2937 bool "Extend dtb kernel arguments with bootloader arguments"
2939 config MIPS_CMDLINE_FROM_BOOTLOADER
2940 bool "Bootloader kernel arguments if available"
2942 config MIPS_CMDLINE_BUILTIN_EXTEND
2943 depends on CMDLINE_BOOL
2944 bool "Extend builtin kernel arguments with bootloader arguments"
2949 config LOCKDEP_SUPPORT
2953 config STACKTRACE_SUPPORT
2957 config HAVE_LATENCYTOP_SUPPORT
2961 config PGTABLE_LEVELS
2963 default 3 if 64BIT && !PAGE_SIZE_64KB
2966 source "init/Kconfig"
2968 source "kernel/Kconfig.freezer"
2970 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2978 bool "Support for PCI controller"
2979 depends on HW_HAS_PCI
2982 Find out whether you have a PCI motherboard. PCI is the name of a
2983 bus system, i.e. the way the CPU talks to the other stuff inside
2984 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2988 bool "Support for HT-linked PCI"
2990 depends on CPU_LOONGSON3
2994 Loongson family machines use Hyper-Transport bus for inter-core
2995 connection and device connection. The PCI bus is a subordinate
2996 linked at HT. Choose Y for Loongson-3 based machines.
3001 config PCI_DOMAINS_GENERIC
3004 config PCI_DRIVERS_GENERIC
3005 select PCI_DOMAINS_GENERIC if PCI_DOMAINS
3008 config PCI_DRIVERS_LEGACY
3009 def_bool !PCI_DRIVERS_GENERIC
3010 select NO_GENERIC_PCI_IOPORT_MAP
3012 source "drivers/pci/Kconfig"
3015 # ISA support is now enabled via select. Too many systems still have the one
3016 # or other ISA chip on the board that users don't know about so don't expect
3017 # users to choose the right thing ...
3024 depends on HW_HAS_EISA
3026 select GENERIC_ISA_DMA
3028 The Extended Industry Standard Architecture (EISA) bus was
3029 developed as an open alternative to the IBM MicroChannel bus.
3031 The EISA bus provided some of the features of the IBM MicroChannel
3032 bus while maintaining backward compatibility with cards made for
3033 the older ISA bus. The EISA bus saw limited use between 1988 and
3034 1995 when it was made obsolete by the PCI bus.
3036 Say Y here if you are building a kernel for an EISA-based machine.
3040 source "drivers/eisa/Kconfig"
3043 bool "TURBOchannel support"
3044 depends on MACH_DECSTATION
3046 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
3047 processors. TURBOchannel programming specifications are available
3049 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
3051 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
3052 Linux driver support status is documented at:
3053 <http://www.linux-mips.org/wiki/DECstation>
3063 select MIPS_EXTERNAL_TIMER
3071 source "drivers/pcmcia/Kconfig"
3074 tristate "RapidIO support"
3078 If you say Y here, the kernel will include drivers and
3079 infrastructure code to support RapidIO interconnect devices.
3081 source "drivers/rapidio/Kconfig"
3085 menu "Executable file formats"
3087 source "fs/Kconfig.binfmt"
3092 config MIPS32_COMPAT
3098 config SYSVIPC_COMPAT
3102 bool "Kernel support for o32 binaries"
3104 select ARCH_WANT_OLD_COMPAT_IPC
3106 select MIPS32_COMPAT
3107 select SYSVIPC_COMPAT if SYSVIPC
3109 Select this option if you want to run o32 binaries. These are pure
3110 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
3111 existing binaries are in this format.
3116 bool "Kernel support for n32 binaries"
3119 select MIPS32_COMPAT
3120 select SYSVIPC_COMPAT if SYSVIPC
3122 Select this option if you want to run n32 binaries. These are
3123 64-bit binaries using 32-bit quantities for addressing and certain
3124 data that would normally be 64-bit. They are used in special
3131 default y if MIPS32_O32 || MIPS32_N32
3136 menu "Power management options"
3138 config ARCH_HIBERNATION_POSSIBLE
3140 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3142 config ARCH_SUSPEND_POSSIBLE
3144 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3146 source "kernel/power/Kconfig"
3150 config MIPS_EXTERNAL_TIMER
3153 menu "CPU Power Management"
3155 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3156 source "drivers/cpufreq/Kconfig"
3159 source "drivers/cpuidle/Kconfig"
3163 source "net/Kconfig"
3165 source "drivers/Kconfig"
3167 source "drivers/firmware/Kconfig"
3171 source "arch/mips/Kconfig.debug"
3173 source "security/Kconfig"
3175 source "crypto/Kconfig"
3177 source "lib/Kconfig"
3179 source "arch/mips/kvm/Kconfig"