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 HAVE_CONTEXT_TRACKING
9 select HAVE_GENERIC_DMA_COHERENT
12 select HAVE_PERF_EVENTS
13 select PERF_USE_VMALLOC
15 select HAVE_ARCH_SECCOMP_FILTER
16 select HAVE_ARCH_TRACEHOOK
17 select HAVE_BPF_JIT if !CPU_MICROMIPS
18 select HAVE_FUNCTION_TRACER
19 select HAVE_DYNAMIC_FTRACE
20 select HAVE_FTRACE_MCOUNT_RECORD
21 select HAVE_C_RECORDMCOUNT
22 select HAVE_FUNCTION_GRAPH_TRACER
24 select HAVE_KRETPROBES
25 select HAVE_SYSCALL_TRACEPOINTS
26 select HAVE_DEBUG_KMEMLEAK
27 select HAVE_SYSCALL_TRACEPOINTS
28 select ARCH_HAS_ELF_RANDOMIZE
29 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
30 select RTC_LIB if !MACH_LOONGSON64
31 select GENERIC_ATOMIC64 if !64BIT
32 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
34 select HAVE_DMA_CONTIGUOUS
35 select HAVE_DMA_API_DEBUG
36 select GENERIC_IRQ_PROBE
37 select GENERIC_IRQ_SHOW
38 select GENERIC_PCI_IOMAP
39 select HAVE_ARCH_JUMP_LABEL
40 select ARCH_WANT_IPC_PARSE_VERSION
41 select IRQ_FORCED_THREADING
43 select HAVE_MEMBLOCK_NODE_MAP
44 select ARCH_DISCARD_MEMBLOCK
45 select GENERIC_SMP_IDLE_THREAD
46 select BUILDTIME_EXTABLE_SORT
47 select GENERIC_CLOCKEVENTS
48 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
49 select GENERIC_CMOS_UPDATE
50 select HAVE_MOD_ARCH_SPECIFIC
52 select MODULES_USE_ELF_REL if MODULES
53 select MODULES_USE_ELF_RELA if MODULES && 64BIT
54 select CLONE_BACKWARDS
55 select HAVE_DEBUG_STACKOVERFLOW
56 select HAVE_CC_STACKPROTECTOR
57 select CPU_PM if CPU_IDLE
58 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
59 select ARCH_BINFMT_ELF_STATE
60 select SYSCTL_EXCEPTION_TRACE
61 select HAVE_VIRT_CPU_ACCOUNTING_GEN
62 select HAVE_IRQ_TIME_ACCOUNTING
64 menu "Machine selection"
71 bool "Alchemy processor based machines"
72 select ARCH_PHYS_ADDR_T_64BIT
76 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
77 select SYS_HAS_CPU_MIPS32_R1
78 select SYS_SUPPORTS_32BIT_KERNEL
79 select SYS_SUPPORTS_APM_EMULATION
80 select ARCH_REQUIRE_GPIOLIB
81 select SYS_SUPPORTS_ZBOOT
85 bool "Texas Instruments AR7"
87 select DMA_NONCOHERENT
93 select SYS_HAS_CPU_MIPS32_R1
94 select SYS_HAS_EARLY_PRINTK
95 select SYS_SUPPORTS_32BIT_KERNEL
96 select SYS_SUPPORTS_LITTLE_ENDIAN
97 select SYS_SUPPORTS_MIPS16
98 select SYS_SUPPORTS_ZBOOT_UART16550
99 select ARCH_REQUIRE_GPIOLIB
103 Support for the Texas Instruments AR7 System-on-a-Chip
104 family: TNETD7100, 7200 and 7300.
107 bool "Atheros AR231x/AR531x SoC support"
110 select DMA_NONCOHERENT
113 select SYS_HAS_CPU_MIPS32_R1
114 select SYS_SUPPORTS_BIG_ENDIAN
115 select SYS_SUPPORTS_32BIT_KERNEL
116 select SYS_HAS_EARLY_PRINTK
118 Support for Atheros AR231x and Atheros AR531x based boards
121 bool "Atheros AR71XX/AR724X/AR913X based boards"
122 select ARCH_HAS_RESET_CONTROLLER
123 select ARCH_REQUIRE_GPIOLIB
127 select DMA_NONCOHERENT
133 select SYS_HAS_CPU_MIPS32_R2
134 select SYS_HAS_EARLY_PRINTK
135 select SYS_SUPPORTS_32BIT_KERNEL
136 select SYS_SUPPORTS_BIG_ENDIAN
137 select SYS_SUPPORTS_MIPS16
138 select SYS_SUPPORTS_ZBOOT
141 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
144 bool "Broadcom Generic BMIPS kernel"
146 select NO_EXCEPT_FILL
152 select BCM7038_L1_IRQ
153 select BCM7120_L2_IRQ
154 select BRCMSTB_L2_IRQ
156 select DMA_NONCOHERENT
157 select SYS_SUPPORTS_32BIT_KERNEL
158 select SYS_SUPPORTS_LITTLE_ENDIAN
159 select SYS_SUPPORTS_BIG_ENDIAN
160 select SYS_SUPPORTS_HIGHMEM
161 select SYS_HAS_CPU_BMIPS32_3300
162 select SYS_HAS_CPU_BMIPS4350
163 select SYS_HAS_CPU_BMIPS4380
164 select SYS_HAS_CPU_BMIPS5000
166 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
167 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
168 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
169 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
171 Build a generic DT-based kernel image that boots on select
172 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
173 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
174 must be set appropriately for your board.
177 bool "Broadcom BCM47XX based boards"
178 select ARCH_WANT_OPTIONAL_GPIOLIB
182 select DMA_NONCOHERENT
185 select SYS_HAS_CPU_MIPS32_R1
186 select NO_EXCEPT_FILL
187 select SYS_SUPPORTS_32BIT_KERNEL
188 select SYS_SUPPORTS_LITTLE_ENDIAN
189 select SYS_SUPPORTS_MIPS16
190 select SYS_HAS_EARLY_PRINTK
191 select USE_GENERIC_EARLY_PRINTK_8250
193 select LEDS_GPIO_REGISTER
196 Support for BCM47XX based boards
199 bool "Broadcom BCM63XX based boards"
204 select DMA_NONCOHERENT
206 select SYS_SUPPORTS_32BIT_KERNEL
207 select SYS_SUPPORTS_BIG_ENDIAN
208 select SYS_HAS_EARLY_PRINTK
210 select ARCH_REQUIRE_GPIOLIB
212 select MIPS_L1_CACHE_SHIFT_4
214 Support for BCM63XX based boards
221 select DMA_NONCOHERENT
227 select PCI_GT64XXX_PCI0
229 select SYS_HAS_CPU_NEVADA
230 select SYS_HAS_EARLY_PRINTK
231 select SYS_SUPPORTS_32BIT_KERNEL
232 select SYS_SUPPORTS_64BIT_KERNEL
233 select SYS_SUPPORTS_LITTLE_ENDIAN
234 select USE_GENERIC_EARLY_PRINTK_8250
236 config MACH_DECSTATION
240 select CEVT_R4K if CPU_R4X00
242 select CSRC_R4K if CPU_R4X00
243 select CPU_DADDI_WORKAROUNDS if 64BIT
244 select CPU_R4000_WORKAROUNDS if 64BIT
245 select CPU_R4400_WORKAROUNDS if 64BIT
246 select DMA_NONCOHERENT
249 select SYS_HAS_CPU_R3000
250 select SYS_HAS_CPU_R4X00
251 select SYS_SUPPORTS_32BIT_KERNEL
252 select SYS_SUPPORTS_64BIT_KERNEL
253 select SYS_SUPPORTS_LITTLE_ENDIAN
254 select SYS_SUPPORTS_128HZ
255 select SYS_SUPPORTS_256HZ
256 select SYS_SUPPORTS_1024HZ
257 select MIPS_L1_CACHE_SHIFT_4
259 This enables support for DEC's MIPS based workstations. For details
260 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
261 DECstation porting pages on <http://decstation.unix-ag.org/>.
263 If you have one of the following DECstation Models you definitely
264 want to choose R4xx0 for the CPU Type:
271 otherwise choose R3000.
274 bool "Jazz family of machines"
277 select ARCH_MAY_HAVE_PC_FDC
280 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
281 select GENERIC_ISA_DMA
282 select HAVE_PCSPKR_PLATFORM
287 select SYS_HAS_CPU_R4X00
288 select SYS_SUPPORTS_32BIT_KERNEL
289 select SYS_SUPPORTS_64BIT_KERNEL
290 select SYS_SUPPORTS_100HZ
292 This a family of machines based on the MIPS R4030 chipset which was
293 used by several vendors to build RISC/os and Windows NT workstations.
294 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
295 Olivetti M700-10 workstations.
298 bool "Ingenic SoC based machines"
299 select SYS_SUPPORTS_32BIT_KERNEL
300 select SYS_SUPPORTS_LITTLE_ENDIAN
301 select SYS_SUPPORTS_ZBOOT_UART16550
302 select DMA_NONCOHERENT
304 select ARCH_REQUIRE_GPIOLIB
306 select GENERIC_IRQ_CHIP
312 bool "Lantiq based platforms"
313 select DMA_NONCOHERENT
317 select SYS_HAS_CPU_MIPS32_R1
318 select SYS_HAS_CPU_MIPS32_R2
319 select SYS_SUPPORTS_BIG_ENDIAN
320 select SYS_SUPPORTS_32BIT_KERNEL
321 select SYS_SUPPORTS_MIPS16
322 select SYS_SUPPORTS_MULTITHREADING
323 select SYS_HAS_EARLY_PRINTK
324 select ARCH_REQUIRE_GPIOLIB
327 select HAVE_MACH_CLKDEV
331 select PINCTRL_LANTIQ
332 select ARCH_HAS_RESET_CONTROLLER
333 select RESET_CONTROLLER
336 bool "LASAT Networks platforms"
340 select DMA_NONCOHERENT
341 select SYS_HAS_EARLY_PRINTK
344 select PCI_GT64XXX_PCI0
346 select R5000_CPU_SCACHE
347 select SYS_HAS_CPU_R5000
348 select SYS_SUPPORTS_32BIT_KERNEL
349 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
350 select SYS_SUPPORTS_LITTLE_ENDIAN
352 config MACH_LOONGSON32
353 bool "Loongson-1 family of machines"
354 select SYS_SUPPORTS_ZBOOT
356 This enables support for the Loongson-1 family of machines.
358 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
359 the Institute of Computing Technology (ICT), Chinese Academy of
362 config MACH_LOONGSON64
363 bool "Loongson-2/3 family of machines"
364 select SYS_SUPPORTS_ZBOOT
366 This enables the support of Loongson-2/3 family of machines.
368 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
369 family of multi-core CPUs. They are both 64-bit general-purpose
370 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
371 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
372 in the People's Republic of China. The chief architect is Professor
375 config MACH_PISTACHIO
376 bool "IMG Pistachio SoC based boards"
377 select ARCH_REQUIRE_GPIOLIB
381 select CLKSRC_MIPS_GIC
384 select DMA_MAYBE_COHERENT
388 select MIPS_CPU_SCACHE
392 select SYS_HAS_CPU_MIPS32_R2
393 select SYS_SUPPORTS_32BIT_KERNEL
394 select SYS_SUPPORTS_LITTLE_ENDIAN
395 select SYS_SUPPORTS_MIPS_CPS
396 select SYS_SUPPORTS_MULTITHREADING
397 select SYS_SUPPORTS_ZBOOT
398 select SYS_HAS_EARLY_PRINTK
399 select USE_GENERIC_EARLY_PRINTK_8250
402 This enables support for the IMG Pistachio SoC platform.
405 bool "MIPS Malta board"
406 select ARCH_MAY_HAVE_PC_FDC
412 select CLKSRC_MIPS_GIC
414 select DMA_MAYBE_COHERENT
415 select GENERIC_ISA_DMA
416 select HAVE_PCSPKR_PLATFORM
423 select MIPS_CPU_SCACHE
424 select MIPS_L1_CACHE_SHIFT_6
425 select PCI_GT64XXX_PCI0
428 select SYS_HAS_CPU_MIPS32_R1
429 select SYS_HAS_CPU_MIPS32_R2
430 select SYS_HAS_CPU_MIPS32_R3_5
431 select SYS_HAS_CPU_MIPS32_R5
432 select SYS_HAS_CPU_MIPS32_R6
433 select SYS_HAS_CPU_MIPS64_R1
434 select SYS_HAS_CPU_MIPS64_R2
435 select SYS_HAS_CPU_MIPS64_R6
436 select SYS_HAS_CPU_NEVADA
437 select SYS_HAS_CPU_RM7000
438 select SYS_SUPPORTS_32BIT_KERNEL
439 select SYS_SUPPORTS_64BIT_KERNEL
440 select SYS_SUPPORTS_BIG_ENDIAN
441 select SYS_SUPPORTS_HIGHMEM
442 select SYS_SUPPORTS_LITTLE_ENDIAN
443 select SYS_SUPPORTS_MICROMIPS
444 select SYS_SUPPORTS_MIPS_CMP
445 select SYS_SUPPORTS_MIPS_CPS
446 select SYS_SUPPORTS_MIPS16
447 select SYS_SUPPORTS_MULTITHREADING
448 select SYS_SUPPORTS_SMARTMIPS
449 select SYS_SUPPORTS_ZBOOT
451 select ZONE_DMA32 if 64BIT
453 This enables support for the MIPS Technologies Malta evaluation
457 bool "MIPS SEAD3 board"
463 select CLKSRC_MIPS_GIC
465 select CPU_MIPSR2_IRQ_VI
466 select CPU_MIPSR2_IRQ_EI
467 select DMA_NONCOHERENT
472 select SYS_HAS_CPU_MIPS32_R1
473 select SYS_HAS_CPU_MIPS32_R2
474 select SYS_HAS_CPU_MIPS64_R1
475 select SYS_HAS_EARLY_PRINTK
476 select SYS_SUPPORTS_32BIT_KERNEL
477 select SYS_SUPPORTS_64BIT_KERNEL
478 select SYS_SUPPORTS_BIG_ENDIAN
479 select SYS_SUPPORTS_LITTLE_ENDIAN
480 select SYS_SUPPORTS_SMARTMIPS
481 select SYS_SUPPORTS_MICROMIPS
482 select SYS_SUPPORTS_MIPS16
483 select USB_EHCI_BIG_ENDIAN_DESC
484 select USB_EHCI_BIG_ENDIAN_MMIO
487 This enables support for the MIPS Technologies SEAD3 evaluation
491 bool "NEC EMMA2RH Mark-eins board"
495 This enables support for the NEC Electronics Mark-eins boards.
498 bool "NEC VR4100 series based machines"
501 select SYS_HAS_CPU_VR41XX
502 select SYS_SUPPORTS_MIPS16
503 select ARCH_REQUIRE_GPIOLIB
506 bool "NXP STB220 board"
509 Support for NXP Semiconductors STB220 Development Board.
516 Support for NXP Semiconductors STB225 Development Board.
519 bool "PMC-Sierra MSP chipsets"
522 select DMA_NONCOHERENT
524 select NO_EXCEPT_FILL
526 select SYS_HAS_CPU_MIPS32_R1
527 select SYS_HAS_CPU_MIPS32_R2
528 select SYS_SUPPORTS_32BIT_KERNEL
529 select SYS_SUPPORTS_BIG_ENDIAN
530 select SYS_SUPPORTS_MIPS16
533 select SERIAL_8250_CONSOLE
534 select USB_EHCI_BIG_ENDIAN_MMIO
535 select USB_EHCI_BIG_ENDIAN_DESC
537 This adds support for the PMC-Sierra family of Multi-Service
538 Processor System-On-A-Chips. These parts include a number
539 of integrated peripherals, interfaces and DSPs in addition to
540 a variety of MIPS cores.
543 bool "Ralink based machines"
547 select DMA_NONCOHERENT
550 select SYS_HAS_CPU_MIPS32_R1
551 select SYS_HAS_CPU_MIPS32_R2
552 select SYS_SUPPORTS_32BIT_KERNEL
553 select SYS_SUPPORTS_LITTLE_ENDIAN
554 select SYS_SUPPORTS_MIPS16
555 select SYS_HAS_EARLY_PRINTK
556 select HAVE_MACH_CLKDEV
558 select ARCH_HAS_RESET_CONTROLLER
559 select RESET_CONTROLLER
562 bool "SGI IP22 (Indy/Indigo2)"
568 select DEFAULT_SGI_PARTITION
569 select DMA_NONCOHERENT
573 select IP22_CPU_SCACHE
575 select GENERIC_ISA_DMA_SUPPORT_BROKEN
577 select SGI_HAS_INDYDOG
583 select SYS_HAS_CPU_R4X00
584 select SYS_HAS_CPU_R5000
586 # Disable EARLY_PRINTK for now since it leads to overwritten prom
587 # memory during early boot on some machines.
589 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
590 # for a more details discussion
592 # select SYS_HAS_EARLY_PRINTK
593 select SYS_SUPPORTS_32BIT_KERNEL
594 select SYS_SUPPORTS_64BIT_KERNEL
595 select SYS_SUPPORTS_BIG_ENDIAN
596 select MIPS_L1_CACHE_SHIFT_7
598 This are the SGI Indy, Challenge S and Indigo2, as well as certain
599 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
600 that runs on these, say Y here.
603 bool "SGI IP27 (Origin200/2000)"
607 select DEFAULT_SGI_PARTITION
609 select SYS_HAS_EARLY_PRINTK
611 select NR_CPUS_DEFAULT_64
612 select SYS_HAS_CPU_R10000
613 select SYS_SUPPORTS_64BIT_KERNEL
614 select SYS_SUPPORTS_BIG_ENDIAN
615 select SYS_SUPPORTS_NUMA
616 select SYS_SUPPORTS_SMP
617 select MIPS_L1_CACHE_SHIFT_7
619 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
620 workstations. To compile a Linux kernel that runs on these, say Y
624 bool "SGI IP28 (Indigo2 R10k)"
630 select DEFAULT_SGI_PARTITION
631 select DMA_NONCOHERENT
632 select GENERIC_ISA_DMA_SUPPORT_BROKEN
638 select SGI_HAS_INDYDOG
644 select SYS_HAS_CPU_R10000
646 # Disable EARLY_PRINTK for now since it leads to overwritten prom
647 # memory during early boot on some machines.
649 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
650 # for a more details discussion
652 # select SYS_HAS_EARLY_PRINTK
653 select SYS_SUPPORTS_64BIT_KERNEL
654 select SYS_SUPPORTS_BIG_ENDIAN
655 select MIPS_L1_CACHE_SHIFT_7
657 This is the SGI Indigo2 with R10000 processor. To compile a Linux
658 kernel that runs on these, say Y here.
667 select DMA_NONCOHERENT
670 select R5000_CPU_SCACHE
671 select RM7000_CPU_SCACHE
672 select SYS_HAS_CPU_R5000
673 select SYS_HAS_CPU_R10000 if BROKEN
674 select SYS_HAS_CPU_RM7000
675 select SYS_HAS_CPU_NEVADA
676 select SYS_SUPPORTS_64BIT_KERNEL
677 select SYS_SUPPORTS_BIG_ENDIAN
679 If you want this kernel to run on SGI O2 workstation, say Y here.
682 bool "Sibyte BCM91120C-CRhine"
685 select SIBYTE_BCM1120
687 select SYS_HAS_CPU_SB1
688 select SYS_SUPPORTS_BIG_ENDIAN
689 select SYS_SUPPORTS_LITTLE_ENDIAN
692 bool "Sibyte BCM91120x-Carmel"
695 select SIBYTE_BCM1120
697 select SYS_HAS_CPU_SB1
698 select SYS_SUPPORTS_BIG_ENDIAN
699 select SYS_SUPPORTS_LITTLE_ENDIAN
702 bool "Sibyte BCM91125C-CRhone"
705 select SIBYTE_BCM1125
707 select SYS_HAS_CPU_SB1
708 select SYS_SUPPORTS_BIG_ENDIAN
709 select SYS_SUPPORTS_HIGHMEM
710 select SYS_SUPPORTS_LITTLE_ENDIAN
713 bool "Sibyte BCM91125E-Rhone"
716 select SIBYTE_BCM1125H
718 select SYS_HAS_CPU_SB1
719 select SYS_SUPPORTS_BIG_ENDIAN
720 select SYS_SUPPORTS_LITTLE_ENDIAN
723 bool "Sibyte BCM91250A-SWARM"
726 select HAVE_PATA_PLATFORM
729 select SYS_HAS_CPU_SB1
730 select SYS_SUPPORTS_BIG_ENDIAN
731 select SYS_SUPPORTS_HIGHMEM
732 select SYS_SUPPORTS_LITTLE_ENDIAN
733 select ZONE_DMA32 if 64BIT
735 config SIBYTE_LITTLESUR
736 bool "Sibyte BCM91250C2-LittleSur"
739 select HAVE_PATA_PLATFORM
742 select SYS_HAS_CPU_SB1
743 select SYS_SUPPORTS_BIG_ENDIAN
744 select SYS_SUPPORTS_HIGHMEM
745 select SYS_SUPPORTS_LITTLE_ENDIAN
747 config SIBYTE_SENTOSA
748 bool "Sibyte BCM91250E-Sentosa"
753 select SYS_HAS_CPU_SB1
754 select SYS_SUPPORTS_BIG_ENDIAN
755 select SYS_SUPPORTS_LITTLE_ENDIAN
758 bool "Sibyte BCM91480B-BigSur"
761 select NR_CPUS_DEFAULT_4
762 select SIBYTE_BCM1x80
764 select SYS_HAS_CPU_SB1
765 select SYS_SUPPORTS_BIG_ENDIAN
766 select SYS_SUPPORTS_HIGHMEM
767 select SYS_SUPPORTS_LITTLE_ENDIAN
768 select ZONE_DMA32 if 64BIT
771 bool "SNI RM200/300/400"
772 select FW_ARC if CPU_LITTLE_ENDIAN
773 select FW_ARC32 if CPU_LITTLE_ENDIAN
774 select FW_SNIPROM if CPU_BIG_ENDIAN
775 select ARCH_MAY_HAVE_PC_FDC
779 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
780 select DMA_NONCOHERENT
781 select GENERIC_ISA_DMA
782 select HAVE_PCSPKR_PLATFORM
789 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
790 select SYS_HAS_CPU_R4X00
791 select SYS_HAS_CPU_R5000
792 select SYS_HAS_CPU_R10000
793 select R5000_CPU_SCACHE
794 select SYS_HAS_EARLY_PRINTK
795 select SYS_SUPPORTS_32BIT_KERNEL
796 select SYS_SUPPORTS_64BIT_KERNEL
797 select SYS_SUPPORTS_BIG_ENDIAN
798 select SYS_SUPPORTS_HIGHMEM
799 select SYS_SUPPORTS_LITTLE_ENDIAN
801 The SNI RM200/300/400 are MIPS-based machines manufactured by
802 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
803 Technology and now in turn merged with Fujitsu. Say Y here to
804 support this machine type.
807 bool "Toshiba TX39 series based machines"
810 bool "Toshiba TX49 series based machines"
812 config MIKROTIK_RB532
813 bool "Mikrotik RB532 boards"
816 select DMA_NONCOHERENT
819 select SYS_HAS_CPU_MIPS32_R1
820 select SYS_SUPPORTS_32BIT_KERNEL
821 select SYS_SUPPORTS_LITTLE_ENDIAN
824 select ARCH_REQUIRE_GPIOLIB
825 select MIPS_L1_CACHE_SHIFT_4
827 Support the Mikrotik(tm) RouterBoard 532 series,
828 based on the IDT RC32434 SoC.
830 config CAVIUM_OCTEON_SOC
831 bool "Cavium Networks Octeon SoC based boards"
833 select ARCH_PHYS_ADDR_T_64BIT
835 select SYS_SUPPORTS_64BIT_KERNEL
836 select SYS_SUPPORTS_BIG_ENDIAN
838 select EDAC_ATOMIC_SCRUB
839 select SYS_SUPPORTS_LITTLE_ENDIAN
840 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
841 select SYS_HAS_EARLY_PRINTK
842 select SYS_HAS_CPU_CAVIUM_OCTEON
847 select ARCH_REQUIRE_GPIOLIB
850 select ARCH_SPARSEMEM_ENABLE
851 select SYS_SUPPORTS_SMP
852 select NR_CPUS_DEFAULT_16
854 select MTD_COMPLEX_MAPPINGS
856 This option supports all of the Octeon reference boards from Cavium
857 Networks. It builds a kernel that dynamically determines the Octeon
858 CPU type and supports all known board reference implementations.
859 Some of the supported boards are:
866 Say Y here for most Octeon reference boards.
869 bool "Netlogic XLR/XLS based systems"
872 select SYS_HAS_CPU_XLR
873 select SYS_SUPPORTS_SMP
876 select SYS_SUPPORTS_32BIT_KERNEL
877 select SYS_SUPPORTS_64BIT_KERNEL
878 select ARCH_PHYS_ADDR_T_64BIT
879 select SYS_SUPPORTS_BIG_ENDIAN
880 select SYS_SUPPORTS_HIGHMEM
882 select NR_CPUS_DEFAULT_32
886 select ZONE_DMA32 if 64BIT
888 select SYS_HAS_EARLY_PRINTK
889 select SYS_SUPPORTS_ZBOOT
890 select SYS_SUPPORTS_ZBOOT_UART16550
892 Support for systems based on Netlogic XLR and XLS processors.
893 Say Y here if you have a XLR or XLS based board.
896 bool "Netlogic XLP based systems"
899 select SYS_HAS_CPU_XLP
900 select SYS_SUPPORTS_SMP
902 select SYS_SUPPORTS_32BIT_KERNEL
903 select SYS_SUPPORTS_64BIT_KERNEL
904 select ARCH_PHYS_ADDR_T_64BIT
905 select ARCH_REQUIRE_GPIOLIB
906 select SYS_SUPPORTS_BIG_ENDIAN
907 select SYS_SUPPORTS_LITTLE_ENDIAN
908 select SYS_SUPPORTS_HIGHMEM
910 select NR_CPUS_DEFAULT_32
914 select ZONE_DMA32 if 64BIT
916 select SYS_HAS_EARLY_PRINTK
918 select SYS_SUPPORTS_ZBOOT
919 select SYS_SUPPORTS_ZBOOT_UART16550
921 This board is based on Netlogic XLP Processor.
922 Say Y here if you have a XLP based board.
925 bool "Para-Virtualized guest system"
929 select SYS_SUPPORTS_64BIT_KERNEL
930 select SYS_SUPPORTS_32BIT_KERNEL
931 select SYS_SUPPORTS_BIG_ENDIAN
932 select SYS_SUPPORTS_SMP
933 select NR_CPUS_DEFAULT_4
934 select SYS_HAS_EARLY_PRINTK
935 select SYS_HAS_CPU_MIPS32_R2
936 select SYS_HAS_CPU_MIPS64_R2
937 select SYS_HAS_CPU_CAVIUM_OCTEON
941 This option supports guest running under ????
945 source "arch/mips/alchemy/Kconfig"
946 source "arch/mips/ath25/Kconfig"
947 source "arch/mips/ath79/Kconfig"
948 source "arch/mips/bcm47xx/Kconfig"
949 source "arch/mips/bcm63xx/Kconfig"
950 source "arch/mips/bmips/Kconfig"
951 source "arch/mips/jazz/Kconfig"
952 source "arch/mips/jz4740/Kconfig"
953 source "arch/mips/lantiq/Kconfig"
954 source "arch/mips/lasat/Kconfig"
955 source "arch/mips/pistachio/Kconfig"
956 source "arch/mips/pmcs-msp71xx/Kconfig"
957 source "arch/mips/ralink/Kconfig"
958 source "arch/mips/sgi-ip27/Kconfig"
959 source "arch/mips/sibyte/Kconfig"
960 source "arch/mips/txx9/Kconfig"
961 source "arch/mips/vr41xx/Kconfig"
962 source "arch/mips/cavium-octeon/Kconfig"
963 source "arch/mips/loongson32/Kconfig"
964 source "arch/mips/loongson64/Kconfig"
965 source "arch/mips/netlogic/Kconfig"
966 source "arch/mips/paravirt/Kconfig"
970 config RWSEM_GENERIC_SPINLOCK
974 config RWSEM_XCHGADD_ALGORITHM
977 config ARCH_HAS_ILOG2_U32
981 config ARCH_HAS_ILOG2_U64
985 config GENERIC_HWEIGHT
989 config GENERIC_CALIBRATE_DELAY
993 config SCHED_OMIT_FRAME_POINTER
998 # Select some configuration options automatically based on user selections.
1003 config ARCH_MAY_HAVE_PC_FDC
1040 select ARCH_REQUIRE_GPIOLIB
1046 config ARCH_DMA_ADDR_T_64BIT
1047 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1049 config ARCH_SUPPORTS_UPROBES
1052 config DMA_MAYBE_COHERENT
1053 select DMA_NONCOHERENT
1059 config DMA_NONCOHERENT
1061 select NEED_DMA_MAP_STATE
1063 config NEED_DMA_MAP_STATE
1066 config SYS_HAS_EARLY_PRINTK
1070 bool "Support for hot-pluggable CPUs"
1071 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
1073 Say Y here to allow turning CPUs off and on. CPUs can be
1074 controlled through /sys/devices/system/cpu.
1075 (Note: power management support will enable this option
1076 automatically on SMP systems. )
1077 Say N if you want to disable CPU hotplug.
1079 config SYS_SUPPORTS_HOTPLUG_CPU
1082 config MIPS_BONITO64
1097 config NO_IOPORT_MAP
1103 config GENERIC_ISA_DMA
1105 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1108 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1110 select GENERIC_ISA_DMA
1115 config HOLES_IN_ZONE
1119 # Endianness selection. Sufficiently obscure so many users don't know what to
1120 # answer,so we try hard to limit the available choices. Also the use of a
1121 # choice statement should be more obvious to the user.
1124 prompt "Endianness selection"
1126 Some MIPS machines can be configured for either little or big endian
1127 byte order. These modes require different kernels and a different
1128 Linux distribution. In general there is one preferred byteorder for a
1129 particular system but some systems are just as commonly used in the
1130 one or the other endianness.
1132 config CPU_BIG_ENDIAN
1134 depends on SYS_SUPPORTS_BIG_ENDIAN
1136 config CPU_LITTLE_ENDIAN
1137 bool "Little endian"
1138 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1145 config SYS_SUPPORTS_APM_EMULATION
1148 config SYS_SUPPORTS_BIG_ENDIAN
1151 config SYS_SUPPORTS_LITTLE_ENDIAN
1154 config SYS_SUPPORTS_HUGETLBFS
1156 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1159 config MIPS_HUGE_TLB_SUPPORT
1160 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1177 config PCI_GT64XXX_PCI0
1180 config NO_EXCEPT_FILL
1187 select DMA_NONCOHERENT
1189 select SWAP_IO_SPACE
1190 select SYS_HAS_CPU_R5500
1191 select SYS_SUPPORTS_32BIT_KERNEL
1192 select SYS_SUPPORTS_64BIT_KERNEL
1193 select SYS_SUPPORTS_BIG_ENDIAN
1200 select DMA_NONCOHERENT
1201 select SYS_HAS_CPU_MIPS32_R2
1202 select SYS_SUPPORTS_32BIT_KERNEL
1203 select SYS_SUPPORTS_LITTLE_ENDIAN
1204 select SYS_SUPPORTS_BIG_ENDIAN
1205 select SYS_SUPPORTS_MIPS16
1206 select CPU_MIPSR2_IRQ_VI
1215 config SWAP_IO_SPACE
1218 config SGI_HAS_INDYDOG
1230 config SGI_HAS_ZILOG
1233 config SGI_HAS_I8042
1236 config DEFAULT_SGI_PARTITION
1248 config MIPS_L1_CACHE_SHIFT_4
1251 config MIPS_L1_CACHE_SHIFT_5
1254 config MIPS_L1_CACHE_SHIFT_6
1257 config MIPS_L1_CACHE_SHIFT_7
1260 config MIPS_L1_CACHE_SHIFT
1262 default "7" if MIPS_L1_CACHE_SHIFT_7
1263 default "6" if MIPS_L1_CACHE_SHIFT_6
1264 default "5" if MIPS_L1_CACHE_SHIFT_5
1265 default "4" if MIPS_L1_CACHE_SHIFT_4
1268 config HAVE_STD_PC_SERIAL_PORT
1272 bool "ARC console support"
1273 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1277 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1282 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1291 menu "CPU selection"
1297 config CPU_LOONGSON3
1298 bool "Loongson 3 CPU"
1299 depends on SYS_HAS_CPU_LOONGSON3
1300 select CPU_SUPPORTS_64BIT_KERNEL
1301 select CPU_SUPPORTS_HIGHMEM
1302 select CPU_SUPPORTS_HUGEPAGES
1303 select WEAK_ORDERING
1304 select WEAK_REORDERING_BEYOND_LLSC
1305 select ARCH_REQUIRE_GPIOLIB
1307 The Loongson 3 processor implements the MIPS64R2 instruction
1308 set with many extensions.
1310 config CPU_LOONGSON2E
1312 depends on SYS_HAS_CPU_LOONGSON2E
1313 select CPU_LOONGSON2
1315 The Loongson 2E processor implements the MIPS III instruction set
1316 with many extensions.
1318 It has an internal FPGA northbridge, which is compatible to
1321 config CPU_LOONGSON2F
1323 depends on SYS_HAS_CPU_LOONGSON2F
1324 select CPU_LOONGSON2
1325 select ARCH_REQUIRE_GPIOLIB
1327 The Loongson 2F processor implements the MIPS III instruction set
1328 with many extensions.
1330 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1331 have a similar programming interface with FPGA northbridge used in
1334 config CPU_LOONGSON1B
1336 depends on SYS_HAS_CPU_LOONGSON1B
1337 select CPU_LOONGSON1
1339 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1340 release 2 instruction set.
1342 config CPU_MIPS32_R1
1343 bool "MIPS32 Release 1"
1344 depends on SYS_HAS_CPU_MIPS32_R1
1345 select CPU_HAS_PREFETCH
1346 select CPU_SUPPORTS_32BIT_KERNEL
1347 select CPU_SUPPORTS_HIGHMEM
1349 Choose this option to build a kernel for release 1 or later of the
1350 MIPS32 architecture. Most modern embedded systems with a 32-bit
1351 MIPS processor are based on a MIPS32 processor. If you know the
1352 specific type of processor in your system, choose those that one
1353 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1354 Release 2 of the MIPS32 architecture is available since several
1355 years so chances are you even have a MIPS32 Release 2 processor
1356 in which case you should choose CPU_MIPS32_R2 instead for better
1359 config CPU_MIPS32_R2
1360 bool "MIPS32 Release 2"
1361 depends on SYS_HAS_CPU_MIPS32_R2
1362 select CPU_HAS_PREFETCH
1363 select CPU_SUPPORTS_32BIT_KERNEL
1364 select CPU_SUPPORTS_HIGHMEM
1365 select CPU_SUPPORTS_MSA
1368 Choose this option to build a kernel for release 2 or later of the
1369 MIPS32 architecture. Most modern embedded systems with a 32-bit
1370 MIPS processor are based on a MIPS32 processor. If you know the
1371 specific type of processor in your system, choose those that one
1372 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1374 config CPU_MIPS32_R6
1375 bool "MIPS32 Release 6"
1376 depends on SYS_HAS_CPU_MIPS32_R6
1377 select CPU_HAS_PREFETCH
1378 select CPU_SUPPORTS_32BIT_KERNEL
1379 select CPU_SUPPORTS_HIGHMEM
1380 select CPU_SUPPORTS_MSA
1383 select MIPS_O32_FP64_SUPPORT
1385 Choose this option to build a kernel for release 6 or later of the
1386 MIPS32 architecture. New MIPS processors, starting with the Warrior
1387 family, are based on a MIPS32r6 processor. If you own an older
1388 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1390 config CPU_MIPS64_R1
1391 bool "MIPS64 Release 1"
1392 depends on SYS_HAS_CPU_MIPS64_R1
1393 select CPU_HAS_PREFETCH
1394 select CPU_SUPPORTS_32BIT_KERNEL
1395 select CPU_SUPPORTS_64BIT_KERNEL
1396 select CPU_SUPPORTS_HIGHMEM
1397 select CPU_SUPPORTS_HUGEPAGES
1399 Choose this option to build a kernel for release 1 or later of the
1400 MIPS64 architecture. Many modern embedded systems with a 64-bit
1401 MIPS processor are based on a MIPS64 processor. If you know the
1402 specific type of processor in your system, choose those that one
1403 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1404 Release 2 of the MIPS64 architecture is available since several
1405 years so chances are you even have a MIPS64 Release 2 processor
1406 in which case you should choose CPU_MIPS64_R2 instead for better
1409 config CPU_MIPS64_R2
1410 bool "MIPS64 Release 2"
1411 depends on SYS_HAS_CPU_MIPS64_R2
1412 select CPU_HAS_PREFETCH
1413 select CPU_SUPPORTS_32BIT_KERNEL
1414 select CPU_SUPPORTS_64BIT_KERNEL
1415 select CPU_SUPPORTS_HIGHMEM
1416 select CPU_SUPPORTS_HUGEPAGES
1417 select CPU_SUPPORTS_MSA
1419 Choose this option to build a kernel for release 2 or later of the
1420 MIPS64 architecture. Many modern embedded systems with a 64-bit
1421 MIPS processor are based on a MIPS64 processor. If you know the
1422 specific type of processor in your system, choose those that one
1423 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1425 config CPU_MIPS64_R6
1426 bool "MIPS64 Release 6"
1427 depends on SYS_HAS_CPU_MIPS64_R6
1428 select CPU_HAS_PREFETCH
1429 select CPU_SUPPORTS_32BIT_KERNEL
1430 select CPU_SUPPORTS_64BIT_KERNEL
1431 select CPU_SUPPORTS_HIGHMEM
1432 select CPU_SUPPORTS_MSA
1434 select MIPS_O32_FP64_SUPPORT if MIPS32_O32
1436 Choose this option to build a kernel for release 6 or later of the
1437 MIPS64 architecture. New MIPS processors, starting with the Warrior
1438 family, are based on a MIPS64r6 processor. If you own an older
1439 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1443 depends on SYS_HAS_CPU_R3000
1445 select CPU_SUPPORTS_32BIT_KERNEL
1446 select CPU_SUPPORTS_HIGHMEM
1448 Please make sure to pick the right CPU type. Linux/MIPS is not
1449 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1450 *not* work on R4000 machines and vice versa. However, since most
1451 of the supported machines have an R4000 (or similar) CPU, R4x00
1452 might be a safe bet. If the resulting kernel does not work,
1453 try to recompile with R3000.
1457 depends on SYS_HAS_CPU_TX39XX
1458 select CPU_SUPPORTS_32BIT_KERNEL
1462 depends on SYS_HAS_CPU_VR41XX
1463 select CPU_SUPPORTS_32BIT_KERNEL
1464 select CPU_SUPPORTS_64BIT_KERNEL
1466 The options selects support for the NEC VR4100 series of processors.
1467 Only choose this option if you have one of these processors as a
1468 kernel built with this option will not run on any other type of
1469 processor or vice versa.
1473 depends on SYS_HAS_CPU_R4300
1474 select CPU_SUPPORTS_32BIT_KERNEL
1475 select CPU_SUPPORTS_64BIT_KERNEL
1477 MIPS Technologies R4300-series processors.
1481 depends on SYS_HAS_CPU_R4X00
1482 select CPU_SUPPORTS_32BIT_KERNEL
1483 select CPU_SUPPORTS_64BIT_KERNEL
1484 select CPU_SUPPORTS_HUGEPAGES
1486 MIPS Technologies R4000-series processors other than 4300, including
1487 the R4000, R4400, R4600, and 4700.
1491 depends on SYS_HAS_CPU_TX49XX
1492 select CPU_HAS_PREFETCH
1493 select CPU_SUPPORTS_32BIT_KERNEL
1494 select CPU_SUPPORTS_64BIT_KERNEL
1495 select CPU_SUPPORTS_HUGEPAGES
1499 depends on SYS_HAS_CPU_R5000
1500 select CPU_SUPPORTS_32BIT_KERNEL
1501 select CPU_SUPPORTS_64BIT_KERNEL
1502 select CPU_SUPPORTS_HUGEPAGES
1504 MIPS Technologies R5000-series processors other than the Nevada.
1508 depends on SYS_HAS_CPU_R5432
1509 select CPU_SUPPORTS_32BIT_KERNEL
1510 select CPU_SUPPORTS_64BIT_KERNEL
1511 select CPU_SUPPORTS_HUGEPAGES
1515 depends on SYS_HAS_CPU_R5500
1516 select CPU_SUPPORTS_32BIT_KERNEL
1517 select CPU_SUPPORTS_64BIT_KERNEL
1518 select CPU_SUPPORTS_HUGEPAGES
1520 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1525 depends on SYS_HAS_CPU_R6000
1526 select CPU_SUPPORTS_32BIT_KERNEL
1528 MIPS Technologies R6000 and R6000A series processors. Note these
1529 processors are extremely rare and the support for them is incomplete.
1533 depends on SYS_HAS_CPU_NEVADA
1534 select CPU_SUPPORTS_32BIT_KERNEL
1535 select CPU_SUPPORTS_64BIT_KERNEL
1536 select CPU_SUPPORTS_HUGEPAGES
1538 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1542 depends on SYS_HAS_CPU_R8000
1543 select CPU_HAS_PREFETCH
1544 select CPU_SUPPORTS_64BIT_KERNEL
1546 MIPS Technologies R8000 processors. Note these processors are
1547 uncommon and the support for them is incomplete.
1551 depends on SYS_HAS_CPU_R10000
1552 select CPU_HAS_PREFETCH
1553 select CPU_SUPPORTS_32BIT_KERNEL
1554 select CPU_SUPPORTS_64BIT_KERNEL
1555 select CPU_SUPPORTS_HIGHMEM
1556 select CPU_SUPPORTS_HUGEPAGES
1558 MIPS Technologies R10000-series processors.
1562 depends on SYS_HAS_CPU_RM7000
1563 select CPU_HAS_PREFETCH
1564 select CPU_SUPPORTS_32BIT_KERNEL
1565 select CPU_SUPPORTS_64BIT_KERNEL
1566 select CPU_SUPPORTS_HIGHMEM
1567 select CPU_SUPPORTS_HUGEPAGES
1571 depends on SYS_HAS_CPU_SB1
1572 select CPU_SUPPORTS_32BIT_KERNEL
1573 select CPU_SUPPORTS_64BIT_KERNEL
1574 select CPU_SUPPORTS_HIGHMEM
1575 select CPU_SUPPORTS_HUGEPAGES
1576 select WEAK_ORDERING
1578 config CPU_CAVIUM_OCTEON
1579 bool "Cavium Octeon processor"
1580 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1581 select CPU_HAS_PREFETCH
1582 select CPU_SUPPORTS_64BIT_KERNEL
1583 select WEAK_ORDERING
1584 select CPU_SUPPORTS_HIGHMEM
1585 select CPU_SUPPORTS_HUGEPAGES
1586 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1587 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1588 select MIPS_L1_CACHE_SHIFT_7
1590 The Cavium Octeon processor is a highly integrated chip containing
1591 many ethernet hardware widgets for networking tasks. The processor
1592 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1593 Full details can be found at http://www.caviumnetworks.com.
1596 bool "Broadcom BMIPS"
1597 depends on SYS_HAS_CPU_BMIPS
1599 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1600 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1601 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1602 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1603 select CPU_SUPPORTS_32BIT_KERNEL
1604 select DMA_NONCOHERENT
1606 select SWAP_IO_SPACE
1607 select WEAK_ORDERING
1608 select CPU_SUPPORTS_HIGHMEM
1609 select CPU_HAS_PREFETCH
1611 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1614 bool "Netlogic XLR SoC"
1615 depends on SYS_HAS_CPU_XLR
1616 select CPU_SUPPORTS_32BIT_KERNEL
1617 select CPU_SUPPORTS_64BIT_KERNEL
1618 select CPU_SUPPORTS_HIGHMEM
1619 select CPU_SUPPORTS_HUGEPAGES
1620 select WEAK_ORDERING
1621 select WEAK_REORDERING_BEYOND_LLSC
1623 Netlogic Microsystems XLR/XLS processors.
1626 bool "Netlogic XLP SoC"
1627 depends on SYS_HAS_CPU_XLP
1628 select CPU_SUPPORTS_32BIT_KERNEL
1629 select CPU_SUPPORTS_64BIT_KERNEL
1630 select CPU_SUPPORTS_HIGHMEM
1631 select WEAK_ORDERING
1632 select WEAK_REORDERING_BEYOND_LLSC
1633 select CPU_HAS_PREFETCH
1635 select CPU_SUPPORTS_HUGEPAGES
1637 Netlogic Microsystems XLP processors.
1640 config CPU_MIPS32_3_5_FEATURES
1641 bool "MIPS32 Release 3.5 Features"
1642 depends on SYS_HAS_CPU_MIPS32_R3_5
1643 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1645 Choose this option to build a kernel for release 2 or later of the
1646 MIPS32 architecture including features from the 3.5 release such as
1647 support for Enhanced Virtual Addressing (EVA).
1649 config CPU_MIPS32_3_5_EVA
1650 bool "Enhanced Virtual Addressing (EVA)"
1651 depends on CPU_MIPS32_3_5_FEATURES
1655 Choose this option if you want to enable the Enhanced Virtual
1656 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1657 One of its primary benefits is an increase in the maximum size
1658 of lowmem (up to 3GB). If unsure, say 'N' here.
1660 config CPU_MIPS32_R5_FEATURES
1661 bool "MIPS32 Release 5 Features"
1662 depends on SYS_HAS_CPU_MIPS32_R5
1663 depends on CPU_MIPS32_R2
1665 Choose this option to build a kernel for release 2 or later of the
1666 MIPS32 architecture including features from release 5 such as
1667 support for Extended Physical Addressing (XPA).
1669 config CPU_MIPS32_R5_XPA
1670 bool "Extended Physical Addressing (XPA)"
1671 depends on CPU_MIPS32_R5_FEATURES
1673 depends on !PAGE_SIZE_4KB
1674 depends on SYS_SUPPORTS_HIGHMEM
1677 select ARCH_PHYS_ADDR_T_64BIT
1680 Choose this option if you want to enable the Extended Physical
1681 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1682 benefit is to increase physical addressing equal to or greater
1683 than 40 bits. Note that this has the side effect of turning on
1684 64-bit addressing which in turn makes the PTEs 64-bit in size.
1685 If unsure, say 'N' here.
1688 config CPU_NOP_WORKAROUNDS
1691 config CPU_JUMP_WORKAROUNDS
1694 config CPU_LOONGSON2F_WORKAROUNDS
1695 bool "Loongson 2F Workarounds"
1697 select CPU_NOP_WORKAROUNDS
1698 select CPU_JUMP_WORKAROUNDS
1700 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1701 require workarounds. Without workarounds the system may hang
1702 unexpectedly. For more information please refer to the gas
1703 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1705 Loongson 2F03 and later have fixed these issues and no workarounds
1706 are needed. The workarounds have no significant side effect on them
1707 but may decrease the performance of the system so this option should
1708 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1711 If unsure, please say Y.
1712 endif # CPU_LOONGSON2F
1714 config SYS_SUPPORTS_ZBOOT
1716 select HAVE_KERNEL_GZIP
1717 select HAVE_KERNEL_BZIP2
1718 select HAVE_KERNEL_LZ4
1719 select HAVE_KERNEL_LZMA
1720 select HAVE_KERNEL_LZO
1721 select HAVE_KERNEL_XZ
1723 config SYS_SUPPORTS_ZBOOT_UART16550
1725 select SYS_SUPPORTS_ZBOOT
1727 config CPU_LOONGSON2
1729 select CPU_SUPPORTS_32BIT_KERNEL
1730 select CPU_SUPPORTS_64BIT_KERNEL
1731 select CPU_SUPPORTS_HIGHMEM
1732 select CPU_SUPPORTS_HUGEPAGES
1734 config CPU_LOONGSON1
1738 select CPU_HAS_PREFETCH
1739 select CPU_SUPPORTS_32BIT_KERNEL
1740 select CPU_SUPPORTS_HIGHMEM
1741 select CPU_SUPPORTS_CPUFREQ
1743 config CPU_BMIPS32_3300
1744 select SMP_UP if SMP
1747 config CPU_BMIPS4350
1749 select SYS_SUPPORTS_SMP
1750 select SYS_SUPPORTS_HOTPLUG_CPU
1752 config CPU_BMIPS4380
1754 select MIPS_L1_CACHE_SHIFT_6
1755 select SYS_SUPPORTS_SMP
1756 select SYS_SUPPORTS_HOTPLUG_CPU
1758 config CPU_BMIPS5000
1760 select MIPS_CPU_SCACHE
1761 select MIPS_L1_CACHE_SHIFT_7
1762 select SYS_SUPPORTS_SMP
1763 select SYS_SUPPORTS_HOTPLUG_CPU
1765 config SYS_HAS_CPU_LOONGSON3
1767 select CPU_SUPPORTS_CPUFREQ
1769 config SYS_HAS_CPU_LOONGSON2E
1772 config SYS_HAS_CPU_LOONGSON2F
1774 select CPU_SUPPORTS_CPUFREQ
1775 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1776 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1778 config SYS_HAS_CPU_LOONGSON1B
1781 config SYS_HAS_CPU_MIPS32_R1
1784 config SYS_HAS_CPU_MIPS32_R2
1787 config SYS_HAS_CPU_MIPS32_R3_5
1790 config SYS_HAS_CPU_MIPS32_R5
1793 config SYS_HAS_CPU_MIPS32_R6
1796 config SYS_HAS_CPU_MIPS64_R1
1799 config SYS_HAS_CPU_MIPS64_R2
1802 config SYS_HAS_CPU_MIPS64_R6
1805 config SYS_HAS_CPU_R3000
1808 config SYS_HAS_CPU_TX39XX
1811 config SYS_HAS_CPU_VR41XX
1814 config SYS_HAS_CPU_R4300
1817 config SYS_HAS_CPU_R4X00
1820 config SYS_HAS_CPU_TX49XX
1823 config SYS_HAS_CPU_R5000
1826 config SYS_HAS_CPU_R5432
1829 config SYS_HAS_CPU_R5500
1832 config SYS_HAS_CPU_R6000
1835 config SYS_HAS_CPU_NEVADA
1838 config SYS_HAS_CPU_R8000
1841 config SYS_HAS_CPU_R10000
1844 config SYS_HAS_CPU_RM7000
1847 config SYS_HAS_CPU_SB1
1850 config SYS_HAS_CPU_CAVIUM_OCTEON
1853 config SYS_HAS_CPU_BMIPS
1856 config SYS_HAS_CPU_BMIPS32_3300
1858 select SYS_HAS_CPU_BMIPS
1860 config SYS_HAS_CPU_BMIPS4350
1862 select SYS_HAS_CPU_BMIPS
1864 config SYS_HAS_CPU_BMIPS4380
1866 select SYS_HAS_CPU_BMIPS
1868 config SYS_HAS_CPU_BMIPS5000
1870 select SYS_HAS_CPU_BMIPS
1872 config SYS_HAS_CPU_XLR
1875 config SYS_HAS_CPU_XLP
1878 config MIPS_MALTA_PM
1879 depends on MIPS_MALTA
1885 # CPU may reorder R->R, R->W, W->R, W->W
1886 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1888 config WEAK_ORDERING
1892 # CPU may reorder reads and writes beyond LL/SC
1893 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1895 config WEAK_REORDERING_BEYOND_LLSC
1900 # These two indicate any level of the MIPS32 and MIPS64 architecture
1904 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1908 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1911 # These two indicate the revision of the architecture, either Release 1 or Release 2
1915 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1919 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1924 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1933 config SYS_SUPPORTS_32BIT_KERNEL
1935 config SYS_SUPPORTS_64BIT_KERNEL
1937 config CPU_SUPPORTS_32BIT_KERNEL
1939 config CPU_SUPPORTS_64BIT_KERNEL
1941 config CPU_SUPPORTS_CPUFREQ
1943 config CPU_SUPPORTS_ADDRWINCFG
1945 config CPU_SUPPORTS_HUGEPAGES
1947 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1949 config MIPS_PGD_C0_CONTEXT
1951 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1954 # Set to y for ptrace access to watch registers.
1956 config HARDWARE_WATCHPOINTS
1958 default y if CPU_MIPSR1 || CPU_MIPSR2
1963 prompt "Kernel code model"
1965 You should only select this option if you have a workload that
1966 actually benefits from 64-bit processing or if your machine has
1967 large memory. You will only be presented a single option in this
1968 menu if your system does not support both 32-bit and 64-bit kernels.
1971 bool "32-bit kernel"
1972 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1975 Select this option if you want to build a 32-bit kernel.
1978 bool "64-bit kernel"
1979 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1981 Select this option if you want to build a 64-bit kernel.
1986 bool "KVM Guest Kernel"
1987 depends on BROKEN_ON_SMP
1989 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1991 config KVM_GUEST_TIMER_FREQ
1992 int "Count/Compare Timer Frequency (MHz)"
1993 depends on KVM_GUEST
1996 Set this to non-zero if building a guest kernel for KVM to skip RTC
1997 emulation when determining guest CPU Frequency. Instead, the guest's
1998 timer frequency is specified directly.
2001 prompt "Kernel page size"
2002 default PAGE_SIZE_4KB
2004 config PAGE_SIZE_4KB
2006 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2008 This option select the standard 4kB Linux page size. On some
2009 R3000-family processors this is the only available page size. Using
2010 4kB page size will minimize memory consumption and is therefore
2011 recommended for low memory systems.
2013 config PAGE_SIZE_8KB
2015 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2017 Using 8kB page size will result in higher performance kernel at
2018 the price of higher memory consumption. This option is available
2019 only on R8000 and cnMIPS processors. Note that you will need a
2020 suitable Linux distribution to support this.
2022 config PAGE_SIZE_16KB
2024 depends on !CPU_R3000 && !CPU_TX39XX
2026 Using 16kB page size will result in higher performance kernel at
2027 the price of higher memory consumption. This option is available on
2028 all non-R3000 family processors. Note that you will need a suitable
2029 Linux distribution to support this.
2031 config PAGE_SIZE_32KB
2033 depends on CPU_CAVIUM_OCTEON
2035 Using 32kB page size will result in higher performance kernel at
2036 the price of higher memory consumption. This option is available
2037 only on cnMIPS cores. Note that you will need a suitable Linux
2038 distribution to support this.
2040 config PAGE_SIZE_64KB
2042 depends on !CPU_R3000 && !CPU_TX39XX
2044 Using 64kB page size will result in higher performance kernel at
2045 the price of higher memory consumption. This option is available on
2046 all non-R3000 family processor. Not that at the time of this
2047 writing this option is still high experimental.
2051 config FORCE_MAX_ZONEORDER
2052 int "Maximum zone order"
2053 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2054 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2055 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2056 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2057 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2058 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2062 The kernel memory allocator divides physically contiguous memory
2063 blocks into "zones", where each zone is a power of two number of
2064 pages. This option selects the largest power of two that the kernel
2065 keeps in the memory allocator. If you need to allocate very large
2066 blocks of physically contiguous memory, then you may need to
2067 increase this value.
2069 This config option is actually maximum order plus one. For example,
2070 a value of 11 means that the largest free memory block is 2^10 pages.
2072 The page size is not necessarily 4KB. Keep this in mind
2073 when choosing a value for this option.
2078 config IP22_CPU_SCACHE
2083 # Support for a MIPS32 / MIPS64 style S-caches
2085 config MIPS_CPU_SCACHE
2089 config R5000_CPU_SCACHE
2093 config RM7000_CPU_SCACHE
2097 config SIBYTE_DMA_PAGEOPS
2098 bool "Use DMA to clear/copy pages"
2101 Instead of using the CPU to zero and copy pages, use a Data Mover
2102 channel. These DMA channels are otherwise unused by the standard
2103 SiByte Linux port. Seems to give a small performance benefit.
2105 config CPU_HAS_PREFETCH
2108 config CPU_GENERIC_DUMP_TLB
2110 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2114 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2116 config CPU_R4K_CACHE_TLB
2118 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2121 bool "MIPS MT SMP support (1 TC on each available VPE)"
2122 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2123 select CPU_MIPSR2_IRQ_VI
2124 select CPU_MIPSR2_IRQ_EI
2130 select SYS_SUPPORTS_SMP
2131 select SYS_SUPPORTS_SCHED_SMT
2132 select MIPS_PERF_SHARED_TC_COUNTERS
2134 This is a kernel model which is known as SMVP. This is supported
2135 on cores with the MT ASE and uses the available VPEs to implement
2136 virtual processors which supports SMP. This is equivalent to the
2137 Intel Hyperthreading feature. For further information go to
2138 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2144 bool "SMT (multithreading) scheduler support"
2145 depends on SYS_SUPPORTS_SCHED_SMT
2148 SMT scheduler support improves the CPU scheduler's decision making
2149 when dealing with MIPS MT enabled cores at a cost of slightly
2150 increased overhead in some places. If unsure say N here.
2152 config SYS_SUPPORTS_SCHED_SMT
2155 config SYS_SUPPORTS_MULTITHREADING
2158 config MIPS_MT_FPAFF
2159 bool "Dynamic FPU affinity for FP-intensive threads"
2161 depends on MIPS_MT_SMP
2163 config MIPSR2_TO_R6_EMULATOR
2164 bool "MIPS R2-to-R6 emulator"
2165 depends on CPU_MIPSR6 && !SMP
2168 Choose this option if you want to run non-R6 MIPS userland code.
2169 Even if you say 'Y' here, the emulator will still be disabled by
2170 default. You can enable it using the 'mipsr2emu' kernel option.
2171 The only reason this is a build-time option is to save ~14K from the
2173 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2174 depends on SMP && CPU_MIPSR6
2176 config MIPS_VPE_LOADER
2177 bool "VPE loader support."
2178 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2179 select CPU_MIPSR2_IRQ_VI
2180 select CPU_MIPSR2_IRQ_EI
2183 Includes a loader for loading an elf relocatable object
2184 onto another VPE and running it.
2186 config MIPS_VPE_LOADER_CMP
2189 depends on MIPS_VPE_LOADER && MIPS_CMP
2191 config MIPS_VPE_LOADER_MT
2194 depends on MIPS_VPE_LOADER && !MIPS_CMP
2196 config MIPS_VPE_LOADER_TOM
2197 bool "Load VPE program into memory hidden from linux"
2198 depends on MIPS_VPE_LOADER
2201 The loader can use memory that is present but has been hidden from
2202 Linux using the kernel command line option "mem=xxMB". It's up to
2203 you to ensure the amount you put in the option and the space your
2204 program requires is less or equal to the amount physically present.
2206 config MIPS_VPE_APSP_API
2207 bool "Enable support for AP/SP API (RTLX)"
2208 depends on MIPS_VPE_LOADER
2211 config MIPS_VPE_APSP_API_CMP
2214 depends on MIPS_VPE_APSP_API && MIPS_CMP
2216 config MIPS_VPE_APSP_API_MT
2219 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2222 bool "MIPS CMP framework support (DEPRECATED)"
2223 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2227 select SYS_SUPPORTS_SMP
2228 select WEAK_ORDERING
2231 Select this if you are using a bootloader which implements the "CMP
2232 framework" protocol (ie. YAMON) and want your kernel to make use of
2233 its ability to start secondary CPUs.
2235 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2239 bool "MIPS Coherent Processing System support"
2240 depends on SYS_SUPPORTS_MIPS_CPS && !CPU_MIPSR6
2243 select MIPS_CPS_PM if HOTPLUG_CPU
2246 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2247 select SYS_SUPPORTS_HOTPLUG_CPU
2248 select SYS_SUPPORTS_SMP
2249 select WEAK_ORDERING
2251 Select this if you wish to run an SMP kernel across multiple cores
2252 within a MIPS Coherent Processing System. When this option is
2253 enabled the kernel will probe for other cores and boot them with
2254 no external assistance. It is safe to enable this when hardware
2255 support is unavailable.
2271 config SB1_PASS_2_WORKAROUNDS
2273 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2276 config SB1_PASS_2_1_WORKAROUNDS
2278 depends on CPU_SB1 && CPU_SB1_PASS_2
2282 config ARCH_PHYS_ADDR_T_64BIT
2286 prompt "SmartMIPS or microMIPS ASE support"
2288 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2291 Select this if you want neither microMIPS nor SmartMIPS support
2293 config CPU_HAS_SMARTMIPS
2294 depends on SYS_SUPPORTS_SMARTMIPS
2297 SmartMIPS is a extension of the MIPS32 architecture aimed at
2298 increased security at both hardware and software level for
2299 smartcards. Enabling this option will allow proper use of the
2300 SmartMIPS instructions by Linux applications. However a kernel with
2301 this option will not work on a MIPS core without SmartMIPS core. If
2302 you don't know you probably don't have SmartMIPS and should say N
2305 config CPU_MICROMIPS
2306 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2309 When this option is enabled the kernel will be built using the
2315 bool "Support for the MIPS SIMD Architecture"
2316 depends on CPU_SUPPORTS_MSA
2317 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2319 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2320 and a set of SIMD instructions to operate on them. When this option
2321 is enabled the kernel will support allocating & switching MSA
2322 vector register contexts. If you know that your kernel will only be
2323 running on CPUs which do not support MSA or that your userland will
2324 not be making use of it then you may wish to say N here to reduce
2325 the size & complexity of your kernel.
2336 # Vectored interrupt mode is an R2 feature
2338 config CPU_MIPSR2_IRQ_VI
2342 # Extended interrupt mode is an R2 feature
2344 config CPU_MIPSR2_IRQ_EI
2349 depends on !CPU_R3000
2355 config CPU_DADDI_WORKAROUNDS
2358 config CPU_R4000_WORKAROUNDS
2360 select CPU_R4400_WORKAROUNDS
2362 config CPU_R4400_WORKAROUNDS
2366 # - Highmem only makes sense for the 32-bit kernel.
2367 # - The current highmem code will only work properly on physically indexed
2368 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2369 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2370 # moment we protect the user and offer the highmem option only on machines
2371 # where it's known to be safe. This will not offer highmem on a few systems
2372 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2373 # indexed CPUs but we're playing safe.
2374 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2375 # know they might have memory configurations that could make use of highmem
2379 bool "High Memory Support"
2380 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2382 config CPU_SUPPORTS_HIGHMEM
2385 config SYS_SUPPORTS_HIGHMEM
2388 config SYS_SUPPORTS_SMARTMIPS
2391 config SYS_SUPPORTS_MICROMIPS
2394 config SYS_SUPPORTS_MIPS16
2397 This option must be set if a kernel might be executed on a MIPS16-
2398 enabled CPU even if MIPS16 is not actually being used. In other
2399 words, it makes the kernel MIPS16-tolerant.
2401 config CPU_SUPPORTS_MSA
2404 config ARCH_FLATMEM_ENABLE
2406 depends on !NUMA && !CPU_LOONGSON2
2408 config ARCH_DISCONTIGMEM_ENABLE
2410 default y if SGI_IP27
2412 Say Y to support efficient handling of discontiguous physical memory,
2413 for architectures which are either NUMA (Non-Uniform Memory Access)
2414 or have huge holes in the physical address space for other reasons.
2415 See <file:Documentation/vm/numa> for more.
2417 config ARCH_SPARSEMEM_ENABLE
2419 select SPARSEMEM_STATIC
2423 depends on SYS_SUPPORTS_NUMA
2425 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2426 Access). This option improves performance on systems with more
2427 than two nodes; on two node systems it is generally better to
2428 leave it disabled; on single node systems disable this option
2431 config SYS_SUPPORTS_NUMA
2437 depends on NEED_MULTIPLE_NODES
2439 config HW_PERF_EVENTS
2440 bool "Enable hardware performance counter support for perf events"
2441 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2444 Enable hardware performance counter support for perf events. If
2445 disabled, perf events will use software events only.
2450 bool "Multi-Processing support"
2451 depends on SYS_SUPPORTS_SMP
2453 This enables support for systems with more than one CPU. If you have
2454 a system with only one CPU, say N. If you have a system with more
2455 than one CPU, say Y.
2457 If you say N here, the kernel will run on uni- and multiprocessor
2458 machines, but will use only one CPU of a multiprocessor machine. If
2459 you say Y here, the kernel will run on many, but not all,
2460 uniprocessor machines. On a uniprocessor machine, the kernel
2461 will run faster if you say N here.
2463 People using multiprocessor machines who say Y here should also say
2464 Y to "Enhanced Real Time Clock Support", below.
2466 See also the SMP-HOWTO available at
2467 <http://www.tldp.org/docs.html#howto>.
2469 If you don't know what to do here, say N.
2474 config SYS_SUPPORTS_MIPS_CMP
2477 config SYS_SUPPORTS_MIPS_CPS
2480 config SYS_SUPPORTS_SMP
2483 config NR_CPUS_DEFAULT_4
2486 config NR_CPUS_DEFAULT_8
2489 config NR_CPUS_DEFAULT_16
2492 config NR_CPUS_DEFAULT_32
2495 config NR_CPUS_DEFAULT_64
2499 int "Maximum number of CPUs (2-256)"
2502 default "4" if NR_CPUS_DEFAULT_4
2503 default "8" if NR_CPUS_DEFAULT_8
2504 default "16" if NR_CPUS_DEFAULT_16
2505 default "32" if NR_CPUS_DEFAULT_32
2506 default "64" if NR_CPUS_DEFAULT_64
2508 This allows you to specify the maximum number of CPUs which this
2509 kernel will support. The maximum supported value is 32 for 32-bit
2510 kernel and 64 for 64-bit kernels; the minimum value which makes
2511 sense is 1 for Qemu (useful only for kernel debugging purposes)
2512 and 2 for all others.
2514 This is purely to save memory - each supported CPU adds
2515 approximately eight kilobytes to the kernel image. For best
2516 performance should round up your number of processors to the next
2519 config MIPS_PERF_SHARED_TC_COUNTERS
2523 # Timer Interrupt Frequency Configuration
2527 prompt "Timer frequency"
2530 Allows the configuration of the timer frequency.
2533 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2536 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2539 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2542 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2545 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2548 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2551 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2555 config SYS_SUPPORTS_48HZ
2558 config SYS_SUPPORTS_100HZ
2561 config SYS_SUPPORTS_128HZ
2564 config SYS_SUPPORTS_250HZ
2567 config SYS_SUPPORTS_256HZ
2570 config SYS_SUPPORTS_1000HZ
2573 config SYS_SUPPORTS_1024HZ
2576 config SYS_SUPPORTS_ARBIT_HZ
2578 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2579 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2580 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2581 !SYS_SUPPORTS_1024HZ
2586 default 100 if HZ_100
2587 default 128 if HZ_128
2588 default 250 if HZ_250
2589 default 256 if HZ_256
2590 default 1000 if HZ_1000
2591 default 1024 if HZ_1024
2594 def_bool HIGH_RES_TIMERS
2596 source "kernel/Kconfig.preempt"
2599 bool "Kexec system call"
2602 kexec is a system call that implements the ability to shutdown your
2603 current kernel, and to start another kernel. It is like a reboot
2604 but it is independent of the system firmware. And like a reboot
2605 you can start any kernel with it, not just Linux.
2607 The name comes from the similarity to the exec system call.
2609 It is an ongoing process to be certain the hardware in a machine
2610 is properly shutdown, so do not be surprised if this code does not
2611 initially work for you. As of this writing the exact hardware
2612 interface is strongly in flux, so no good recommendation can be
2616 bool "Kernel crash dumps"
2618 Generate crash dump after being started by kexec.
2619 This should be normally only set in special crash dump kernels
2620 which are loaded in the main kernel with kexec-tools into
2621 a specially reserved region and then later executed after
2622 a crash by kdump/kexec. The crash dump kernel must be compiled
2623 to a memory address not used by the main kernel or firmware using
2626 config PHYSICAL_START
2627 hex "Physical address where the kernel is loaded"
2628 default "0xffffffff84000000" if 64BIT
2629 default "0x84000000" if 32BIT
2630 depends on CRASH_DUMP
2632 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2633 If you plan to use kernel for capturing the crash dump change
2634 this value to start of the reserved region (the "X" value as
2635 specified in the "crashkernel=YM@XM" command line boot parameter
2636 passed to the panic-ed kernel).
2639 bool "Enable seccomp to safely compute untrusted bytecode"
2643 This kernel feature is useful for number crunching applications
2644 that may need to compute untrusted bytecode during their
2645 execution. By using pipes or other transports made available to
2646 the process as file descriptors supporting the read/write
2647 syscalls, it's possible to isolate those applications in
2648 their own address space using seccomp. Once seccomp is
2649 enabled via /proc/<pid>/seccomp, it cannot be disabled
2650 and the task is only allowed to execute a few safe syscalls
2651 defined by each seccomp mode.
2653 If unsure, say Y. Only embedded should say N here.
2655 config MIPS_O32_FP64_SUPPORT
2656 bool "Support for O32 binaries using 64-bit FP"
2657 depends on 32BIT || MIPS32_O32
2659 When this is enabled, the kernel will support use of 64-bit floating
2660 point registers with binaries using the O32 ABI along with the
2661 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2662 32-bit MIPS systems this support is at the cost of increasing the
2663 size and complexity of the compiled FPU emulator. Thus if you are
2664 running a MIPS32 system and know that none of your userland binaries
2665 will require 64-bit floating point, you may wish to reduce the size
2666 of your kernel & potentially improve FP emulation performance by
2669 Although binutils currently supports use of this flag the details
2670 concerning its effect upon the O32 ABI in userland are still being
2671 worked on. In order to avoid userland becoming dependant upon current
2672 behaviour before the details have been finalised, this option should
2673 be considered experimental and only enabled by those working upon
2681 select OF_EARLY_FLATTREE
2688 prompt "Kernel appended dtb support" if OF
2689 default MIPS_NO_APPENDED_DTB
2691 config MIPS_NO_APPENDED_DTB
2694 Do not enable appended dtb support.
2696 config MIPS_RAW_APPENDED_DTB
2699 With this option, the boot code will look for a device tree binary
2700 DTB) appended to raw vmlinux.bin (without decompressor).
2701 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2703 This is meant as a backward compatibility convenience for those
2704 systems with a bootloader that can't be upgraded to accommodate
2705 the documented boot protocol using a device tree.
2707 Beware that there is very little in terms of protection against
2708 this option being confused by leftover garbage in memory that might
2709 look like a DTB header after a reboot if no actual DTB is appended
2710 to vmlinux.bin. Do not leave this option active in a production kernel
2711 if you don't intend to always append a DTB.
2713 config MIPS_ZBOOT_APPENDED_DTB
2715 depends on SYS_SUPPORTS_ZBOOT
2717 With this option, the boot code will look for a device tree binary
2718 DTB) appended to raw vmlinuz.bin (with decompressor).
2719 (e.g. cat vmlinuz.bin <filename>.dtb > vmlinuz_w_dtb).
2721 This is meant as a backward compatibility convenience for those
2722 systems with a bootloader that can't be upgraded to accommodate
2723 the documented boot protocol using a device tree.
2725 Beware that there is very little in terms of protection against
2726 this option being confused by leftover garbage in memory that might
2727 look like a DTB header after a reboot if no actual DTB is appended
2728 to vmlinuz.bin. Do not leave this option active in a production kernel
2729 if you don't intend to always append a DTB.
2734 config LOCKDEP_SUPPORT
2738 config STACKTRACE_SUPPORT
2742 config PGTABLE_LEVELS
2744 default 3 if 64BIT && !PAGE_SIZE_64KB
2747 source "init/Kconfig"
2749 source "kernel/Kconfig.freezer"
2751 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2759 bool "Support for PCI controller"
2760 depends on HW_HAS_PCI
2762 select NO_GENERIC_PCI_IOPORT_MAP
2764 Find out whether you have a PCI motherboard. PCI is the name of a
2765 bus system, i.e. the way the CPU talks to the other stuff inside
2766 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2770 bool "Support for HT-linked PCI"
2772 depends on CPU_LOONGSON3
2776 Loongson family machines use Hyper-Transport bus for inter-core
2777 connection and device connection. The PCI bus is a subordinate
2778 linked at HT. Choose Y for Loongson-3 based machines.
2783 source "drivers/pci/Kconfig"
2785 source "drivers/pci/pcie/Kconfig"
2788 # ISA support is now enabled via select. Too many systems still have the one
2789 # or other ISA chip on the board that users don't know about so don't expect
2790 # users to choose the right thing ...
2797 depends on HW_HAS_EISA
2799 select GENERIC_ISA_DMA
2801 The Extended Industry Standard Architecture (EISA) bus was
2802 developed as an open alternative to the IBM MicroChannel bus.
2804 The EISA bus provided some of the features of the IBM MicroChannel
2805 bus while maintaining backward compatibility with cards made for
2806 the older ISA bus. The EISA bus saw limited use between 1988 and
2807 1995 when it was made obsolete by the PCI bus.
2809 Say Y here if you are building a kernel for an EISA-based machine.
2813 source "drivers/eisa/Kconfig"
2816 bool "TURBOchannel support"
2817 depends on MACH_DECSTATION
2819 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2820 processors. TURBOchannel programming specifications are available
2822 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2824 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2825 Linux driver support status is documented at:
2826 <http://www.linux-mips.org/wiki/DECstation>
2836 select MIPS_EXTERNAL_TIMER
2844 source "drivers/pcmcia/Kconfig"
2846 source "drivers/pci/hotplug/Kconfig"
2849 tristate "RapidIO support"
2853 If you say Y here, the kernel will include drivers and
2854 infrastructure code to support RapidIO interconnect devices.
2856 source "drivers/rapidio/Kconfig"
2860 menu "Executable file formats"
2862 source "fs/Kconfig.binfmt"
2867 config MIPS32_COMPAT
2873 config SYSVIPC_COMPAT
2877 bool "Kernel support for o32 binaries"
2879 select ARCH_WANT_OLD_COMPAT_IPC
2881 select MIPS32_COMPAT
2882 select SYSVIPC_COMPAT if SYSVIPC
2884 Select this option if you want to run o32 binaries. These are pure
2885 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2886 existing binaries are in this format.
2891 bool "Kernel support for n32 binaries"
2894 select MIPS32_COMPAT
2895 select SYSVIPC_COMPAT if SYSVIPC
2897 Select this option if you want to run n32 binaries. These are
2898 64-bit binaries using 32-bit quantities for addressing and certain
2899 data that would normally be 64-bit. They are used in special
2906 default y if MIPS32_O32 || MIPS32_N32
2910 menu "Power management options"
2912 config ARCH_HIBERNATION_POSSIBLE
2914 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2916 config ARCH_SUSPEND_POSSIBLE
2918 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2920 source "kernel/power/Kconfig"
2924 config MIPS_EXTERNAL_TIMER
2927 menu "CPU Power Management"
2929 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2930 source "drivers/cpufreq/Kconfig"
2933 source "drivers/cpuidle/Kconfig"
2937 source "net/Kconfig"
2939 source "drivers/Kconfig"
2941 source "drivers/firmware/Kconfig"
2945 source "arch/mips/Kconfig.debug"
2947 source "security/Kconfig"
2949 source "crypto/Kconfig"
2951 source "lib/Kconfig"
2953 source "arch/mips/kvm/Kconfig"