4 select ARCH_SUPPORTS_UPROBES
5 select ARCH_MIGHT_HAVE_PC_PARPORT
6 select ARCH_MIGHT_HAVE_PC_SERIO
7 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
8 select ARCH_USE_BUILTIN_BSWAP
9 select HAVE_CONTEXT_TRACKING
10 select HAVE_GENERIC_DMA_COHERENT
13 select HAVE_PERF_EVENTS
14 select PERF_USE_VMALLOC
16 select HAVE_ARCH_SECCOMP_FILTER
17 select HAVE_ARCH_TRACEHOOK
18 select HAVE_BPF_JIT if !CPU_MICROMIPS
19 select HAVE_FUNCTION_TRACER
20 select HAVE_DYNAMIC_FTRACE
21 select HAVE_FTRACE_MCOUNT_RECORD
22 select HAVE_C_RECORDMCOUNT
23 select HAVE_FUNCTION_GRAPH_TRACER
25 select HAVE_KRETPROBES
26 select HAVE_SYSCALL_TRACEPOINTS
27 select HAVE_DEBUG_KMEMLEAK
28 select HAVE_SYSCALL_TRACEPOINTS
29 select ARCH_HAS_ELF_RANDOMIZE
30 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
31 select RTC_LIB if !MACH_LOONGSON64
32 select GENERIC_ATOMIC64 if !64BIT
33 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
34 select HAVE_DMA_CONTIGUOUS
35 select HAVE_DMA_API_DEBUG
36 select GENERIC_IRQ_PROBE
37 select GENERIC_IRQ_SHOW
38 select GENERIC_PCI_IOMAP
39 select HAVE_ARCH_JUMP_LABEL
40 select ARCH_WANT_IPC_PARSE_VERSION
41 select IRQ_FORCED_THREADING
43 select HAVE_MEMBLOCK_NODE_MAP
44 select ARCH_DISCARD_MEMBLOCK
45 select GENERIC_SMP_IDLE_THREAD
46 select BUILDTIME_EXTABLE_SORT
47 select GENERIC_CLOCKEVENTS
48 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
49 select GENERIC_CMOS_UPDATE
50 select HAVE_MOD_ARCH_SPECIFIC
52 select MODULES_USE_ELF_REL if MODULES
53 select MODULES_USE_ELF_RELA if MODULES && 64BIT
54 select CLONE_BACKWARDS
55 select HAVE_DEBUG_STACKOVERFLOW
56 select HAVE_CC_STACKPROTECTOR
57 select CPU_PM if CPU_IDLE
58 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
59 select ARCH_BINFMT_ELF_STATE
60 select SYSCTL_EXCEPTION_TRACE
61 select HAVE_VIRT_CPU_ACCOUNTING_GEN
62 select HAVE_IRQ_TIME_ACCOUNTING
63 select GENERIC_TIME_VSYSCALL
64 select ARCH_CLOCKSOURCE_DATA
66 menu "Machine selection"
73 bool "Alchemy processor based machines"
74 select ARCH_PHYS_ADDR_T_64BIT
78 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
79 select SYS_HAS_CPU_MIPS32_R1
80 select SYS_SUPPORTS_32BIT_KERNEL
81 select SYS_SUPPORTS_APM_EMULATION
82 select ARCH_REQUIRE_GPIOLIB
83 select SYS_SUPPORTS_ZBOOT
87 bool "Texas Instruments AR7"
89 select DMA_NONCOHERENT
95 select SYS_HAS_CPU_MIPS32_R1
96 select SYS_HAS_EARLY_PRINTK
97 select SYS_SUPPORTS_32BIT_KERNEL
98 select SYS_SUPPORTS_LITTLE_ENDIAN
99 select SYS_SUPPORTS_MIPS16
100 select SYS_SUPPORTS_ZBOOT_UART16550
101 select ARCH_REQUIRE_GPIOLIB
105 Support for the Texas Instruments AR7 System-on-a-Chip
106 family: TNETD7100, 7200 and 7300.
109 bool "Atheros AR231x/AR531x SoC support"
112 select DMA_NONCOHERENT
115 select SYS_HAS_CPU_MIPS32_R1
116 select SYS_SUPPORTS_BIG_ENDIAN
117 select SYS_SUPPORTS_32BIT_KERNEL
118 select SYS_HAS_EARLY_PRINTK
120 Support for Atheros AR231x and Atheros AR531x based boards
123 bool "Atheros AR71XX/AR724X/AR913X based boards"
124 select ARCH_HAS_RESET_CONTROLLER
125 select ARCH_REQUIRE_GPIOLIB
129 select DMA_NONCOHERENT
135 select SYS_HAS_CPU_MIPS32_R2
136 select SYS_HAS_EARLY_PRINTK
137 select SYS_SUPPORTS_32BIT_KERNEL
138 select SYS_SUPPORTS_BIG_ENDIAN
139 select SYS_SUPPORTS_MIPS16
140 select SYS_SUPPORTS_ZBOOT
143 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
146 bool "Broadcom Generic BMIPS kernel"
148 select NO_EXCEPT_FILL
154 select BCM7038_L1_IRQ
155 select BCM7120_L2_IRQ
156 select BRCMSTB_L2_IRQ
158 select DMA_NONCOHERENT
159 select SYS_SUPPORTS_32BIT_KERNEL
160 select SYS_SUPPORTS_LITTLE_ENDIAN
161 select SYS_SUPPORTS_BIG_ENDIAN
162 select SYS_SUPPORTS_HIGHMEM
163 select SYS_HAS_CPU_BMIPS32_3300
164 select SYS_HAS_CPU_BMIPS4350
165 select SYS_HAS_CPU_BMIPS4380
166 select SYS_HAS_CPU_BMIPS5000
168 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
169 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
170 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
171 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
173 Build a generic DT-based kernel image that boots on select
174 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
175 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
176 must be set appropriately for your board.
179 bool "Broadcom BCM47XX based boards"
180 select ARCH_WANT_OPTIONAL_GPIOLIB
184 select DMA_NONCOHERENT
187 select SYS_HAS_CPU_MIPS32_R1
188 select NO_EXCEPT_FILL
189 select SYS_SUPPORTS_32BIT_KERNEL
190 select SYS_SUPPORTS_LITTLE_ENDIAN
191 select SYS_SUPPORTS_MIPS16
192 select SYS_HAS_EARLY_PRINTK
193 select USE_GENERIC_EARLY_PRINTK_8250
195 select LEDS_GPIO_REGISTER
198 Support for BCM47XX based boards
201 bool "Broadcom BCM63XX based boards"
206 select DMA_NONCOHERENT
208 select SYS_SUPPORTS_32BIT_KERNEL
209 select SYS_SUPPORTS_BIG_ENDIAN
210 select SYS_HAS_EARLY_PRINTK
212 select ARCH_REQUIRE_GPIOLIB
214 select MIPS_L1_CACHE_SHIFT_4
216 Support for BCM63XX based boards
223 select DMA_NONCOHERENT
229 select PCI_GT64XXX_PCI0
231 select SYS_HAS_CPU_NEVADA
232 select SYS_HAS_EARLY_PRINTK
233 select SYS_SUPPORTS_32BIT_KERNEL
234 select SYS_SUPPORTS_64BIT_KERNEL
235 select SYS_SUPPORTS_LITTLE_ENDIAN
236 select USE_GENERIC_EARLY_PRINTK_8250
238 config MACH_DECSTATION
242 select CEVT_R4K if CPU_R4X00
244 select CSRC_R4K if CPU_R4X00
245 select CPU_DADDI_WORKAROUNDS if 64BIT
246 select CPU_R4000_WORKAROUNDS if 64BIT
247 select CPU_R4400_WORKAROUNDS if 64BIT
248 select DMA_NONCOHERENT
251 select SYS_HAS_CPU_R3000
252 select SYS_HAS_CPU_R4X00
253 select SYS_SUPPORTS_32BIT_KERNEL
254 select SYS_SUPPORTS_64BIT_KERNEL
255 select SYS_SUPPORTS_LITTLE_ENDIAN
256 select SYS_SUPPORTS_128HZ
257 select SYS_SUPPORTS_256HZ
258 select SYS_SUPPORTS_1024HZ
259 select MIPS_L1_CACHE_SHIFT_4
261 This enables support for DEC's MIPS based workstations. For details
262 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
263 DECstation porting pages on <http://decstation.unix-ag.org/>.
265 If you have one of the following DECstation Models you definitely
266 want to choose R4xx0 for the CPU Type:
273 otherwise choose R3000.
276 bool "Jazz family of machines"
279 select ARCH_MAY_HAVE_PC_FDC
282 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
283 select GENERIC_ISA_DMA
284 select HAVE_PCSPKR_PLATFORM
289 select SYS_HAS_CPU_R4X00
290 select SYS_SUPPORTS_32BIT_KERNEL
291 select SYS_SUPPORTS_64BIT_KERNEL
292 select SYS_SUPPORTS_100HZ
294 This a family of machines based on the MIPS R4030 chipset which was
295 used by several vendors to build RISC/os and Windows NT workstations.
296 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
297 Olivetti M700-10 workstations.
300 bool "Ingenic SoC based machines"
301 select SYS_SUPPORTS_32BIT_KERNEL
302 select SYS_SUPPORTS_LITTLE_ENDIAN
303 select SYS_SUPPORTS_ZBOOT_UART16550
304 select DMA_NONCOHERENT
306 select ARCH_REQUIRE_GPIOLIB
308 select GENERIC_IRQ_CHIP
314 bool "Lantiq based platforms"
315 select DMA_NONCOHERENT
319 select SYS_HAS_CPU_MIPS32_R1
320 select SYS_HAS_CPU_MIPS32_R2
321 select SYS_SUPPORTS_BIG_ENDIAN
322 select SYS_SUPPORTS_32BIT_KERNEL
323 select SYS_SUPPORTS_MIPS16
324 select SYS_SUPPORTS_MULTITHREADING
325 select SYS_HAS_EARLY_PRINTK
326 select ARCH_REQUIRE_GPIOLIB
329 select HAVE_MACH_CLKDEV
333 select PINCTRL_LANTIQ
334 select ARCH_HAS_RESET_CONTROLLER
335 select RESET_CONTROLLER
338 bool "LASAT Networks platforms"
342 select DMA_NONCOHERENT
343 select SYS_HAS_EARLY_PRINTK
346 select PCI_GT64XXX_PCI0
348 select R5000_CPU_SCACHE
349 select SYS_HAS_CPU_R5000
350 select SYS_SUPPORTS_32BIT_KERNEL
351 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
352 select SYS_SUPPORTS_LITTLE_ENDIAN
354 config MACH_LOONGSON32
355 bool "Loongson-1 family of machines"
356 select SYS_SUPPORTS_ZBOOT
358 This enables support for the Loongson-1 family of machines.
360 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
361 the Institute of Computing Technology (ICT), Chinese Academy of
364 config MACH_LOONGSON64
365 bool "Loongson-2/3 family of machines"
366 select SYS_SUPPORTS_ZBOOT
368 This enables the support of Loongson-2/3 family of machines.
370 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
371 family of multi-core CPUs. They are both 64-bit general-purpose
372 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
373 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
374 in the People's Republic of China. The chief architect is Professor
377 config MACH_PISTACHIO
378 bool "IMG Pistachio SoC based boards"
379 select ARCH_REQUIRE_GPIOLIB
383 select CLKSRC_MIPS_GIC
386 select DMA_MAYBE_COHERENT
390 select MIPS_CPU_SCACHE
394 select SYS_HAS_CPU_MIPS32_R2
395 select SYS_SUPPORTS_32BIT_KERNEL
396 select SYS_SUPPORTS_LITTLE_ENDIAN
397 select SYS_SUPPORTS_MIPS_CPS
398 select SYS_SUPPORTS_MULTITHREADING
399 select SYS_SUPPORTS_ZBOOT
400 select SYS_HAS_EARLY_PRINTK
401 select USE_GENERIC_EARLY_PRINTK_8250
404 This enables support for the IMG Pistachio SoC platform.
407 bool "MIPSfpga Xilinx based boards"
408 select ARCH_REQUIRE_GPIOLIB
417 select MIPS_CPU_SCACHE
418 select SYS_HAS_EARLY_PRINTK
419 select SYS_HAS_CPU_MIPS32_R2
420 select SYS_SUPPORTS_32BIT_KERNEL
421 select SYS_SUPPORTS_LITTLE_ENDIAN
422 select SYS_SUPPORTS_ZBOOT_UART16550
424 select USE_GENERIC_EARLY_PRINTK_8250
426 This enables support for the IMG University Program MIPSfpga platform.
429 bool "MIPS Malta board"
430 select ARCH_MAY_HAVE_PC_FDC
436 select CLKSRC_MIPS_GIC
438 select DMA_MAYBE_COHERENT
439 select GENERIC_ISA_DMA
440 select HAVE_PCSPKR_PLATFORM
447 select MIPS_CPU_SCACHE
448 select MIPS_L1_CACHE_SHIFT_6
449 select PCI_GT64XXX_PCI0
453 select SYS_HAS_CPU_MIPS32_R1
454 select SYS_HAS_CPU_MIPS32_R2
455 select SYS_HAS_CPU_MIPS32_R3_5
456 select SYS_HAS_CPU_MIPS32_R5
457 select SYS_HAS_CPU_MIPS32_R6
458 select SYS_HAS_CPU_MIPS64_R1
459 select SYS_HAS_CPU_MIPS64_R2
460 select SYS_HAS_CPU_MIPS64_R6
461 select SYS_HAS_CPU_NEVADA
462 select SYS_HAS_CPU_RM7000
463 select SYS_SUPPORTS_32BIT_KERNEL
464 select SYS_SUPPORTS_64BIT_KERNEL
465 select SYS_SUPPORTS_BIG_ENDIAN
466 select SYS_SUPPORTS_HIGHMEM
467 select SYS_SUPPORTS_LITTLE_ENDIAN
468 select SYS_SUPPORTS_MICROMIPS
469 select SYS_SUPPORTS_MIPS_CMP
470 select SYS_SUPPORTS_MIPS_CPS
471 select SYS_SUPPORTS_MIPS16
472 select SYS_SUPPORTS_MULTITHREADING
473 select SYS_SUPPORTS_SMARTMIPS
474 select SYS_SUPPORTS_ZBOOT
476 select ZONE_DMA32 if 64BIT
480 This enables support for the MIPS Technologies Malta evaluation
484 bool "MIPS SEAD3 board"
490 select CLKSRC_MIPS_GIC
492 select CPU_MIPSR2_IRQ_VI
493 select CPU_MIPSR2_IRQ_EI
494 select DMA_NONCOHERENT
499 select SYS_HAS_CPU_MIPS32_R1
500 select SYS_HAS_CPU_MIPS32_R2
501 select SYS_HAS_CPU_MIPS64_R1
502 select SYS_HAS_EARLY_PRINTK
503 select SYS_SUPPORTS_32BIT_KERNEL
504 select SYS_SUPPORTS_64BIT_KERNEL
505 select SYS_SUPPORTS_BIG_ENDIAN
506 select SYS_SUPPORTS_LITTLE_ENDIAN
507 select SYS_SUPPORTS_SMARTMIPS
508 select SYS_SUPPORTS_MICROMIPS
509 select SYS_SUPPORTS_MIPS16
510 select USB_EHCI_BIG_ENDIAN_DESC
511 select USB_EHCI_BIG_ENDIAN_MMIO
514 This enables support for the MIPS Technologies SEAD3 evaluation
518 bool "NEC EMMA2RH Mark-eins board"
522 This enables support for the NEC Electronics Mark-eins boards.
525 bool "NEC VR4100 series based machines"
528 select SYS_HAS_CPU_VR41XX
529 select SYS_SUPPORTS_MIPS16
530 select ARCH_REQUIRE_GPIOLIB
533 bool "NXP STB220 board"
536 Support for NXP Semiconductors STB220 Development Board.
543 Support for NXP Semiconductors STB225 Development Board.
546 bool "PMC-Sierra MSP chipsets"
549 select DMA_NONCOHERENT
551 select NO_EXCEPT_FILL
553 select SYS_HAS_CPU_MIPS32_R1
554 select SYS_HAS_CPU_MIPS32_R2
555 select SYS_SUPPORTS_32BIT_KERNEL
556 select SYS_SUPPORTS_BIG_ENDIAN
557 select SYS_SUPPORTS_MIPS16
560 select SERIAL_8250_CONSOLE
561 select USB_EHCI_BIG_ENDIAN_MMIO
562 select USB_EHCI_BIG_ENDIAN_DESC
564 This adds support for the PMC-Sierra family of Multi-Service
565 Processor System-On-A-Chips. These parts include a number
566 of integrated peripherals, interfaces and DSPs in addition to
567 a variety of MIPS cores.
570 bool "Ralink based machines"
574 select DMA_NONCOHERENT
577 select SYS_HAS_CPU_MIPS32_R1
578 select SYS_HAS_CPU_MIPS32_R2
579 select SYS_SUPPORTS_32BIT_KERNEL
580 select SYS_SUPPORTS_LITTLE_ENDIAN
581 select SYS_SUPPORTS_MIPS16
582 select SYS_HAS_EARLY_PRINTK
583 select HAVE_MACH_CLKDEV
585 select ARCH_HAS_RESET_CONTROLLER
586 select RESET_CONTROLLER
589 bool "SGI IP22 (Indy/Indigo2)"
595 select DEFAULT_SGI_PARTITION
596 select DMA_NONCOHERENT
600 select IP22_CPU_SCACHE
602 select GENERIC_ISA_DMA_SUPPORT_BROKEN
604 select SGI_HAS_INDYDOG
610 select SYS_HAS_CPU_R4X00
611 select SYS_HAS_CPU_R5000
613 # Disable EARLY_PRINTK for now since it leads to overwritten prom
614 # memory during early boot on some machines.
616 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
617 # for a more details discussion
619 # select SYS_HAS_EARLY_PRINTK
620 select SYS_SUPPORTS_32BIT_KERNEL
621 select SYS_SUPPORTS_64BIT_KERNEL
622 select SYS_SUPPORTS_BIG_ENDIAN
623 select MIPS_L1_CACHE_SHIFT_7
625 This are the SGI Indy, Challenge S and Indigo2, as well as certain
626 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
627 that runs on these, say Y here.
630 bool "SGI IP27 (Origin200/2000)"
634 select DEFAULT_SGI_PARTITION
636 select SYS_HAS_EARLY_PRINTK
638 select NR_CPUS_DEFAULT_64
639 select SYS_HAS_CPU_R10000
640 select SYS_SUPPORTS_64BIT_KERNEL
641 select SYS_SUPPORTS_BIG_ENDIAN
642 select SYS_SUPPORTS_NUMA
643 select SYS_SUPPORTS_SMP
644 select MIPS_L1_CACHE_SHIFT_7
646 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
647 workstations. To compile a Linux kernel that runs on these, say Y
651 bool "SGI IP28 (Indigo2 R10k)"
657 select DEFAULT_SGI_PARTITION
658 select DMA_NONCOHERENT
659 select GENERIC_ISA_DMA_SUPPORT_BROKEN
665 select SGI_HAS_INDYDOG
671 select SYS_HAS_CPU_R10000
673 # Disable EARLY_PRINTK for now since it leads to overwritten prom
674 # memory during early boot on some machines.
676 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
677 # for a more details discussion
679 # select SYS_HAS_EARLY_PRINTK
680 select SYS_SUPPORTS_64BIT_KERNEL
681 select SYS_SUPPORTS_BIG_ENDIAN
682 select MIPS_L1_CACHE_SHIFT_7
684 This is the SGI Indigo2 with R10000 processor. To compile a Linux
685 kernel that runs on these, say Y here.
694 select DMA_NONCOHERENT
697 select R5000_CPU_SCACHE
698 select RM7000_CPU_SCACHE
699 select SYS_HAS_CPU_R5000
700 select SYS_HAS_CPU_R10000 if BROKEN
701 select SYS_HAS_CPU_RM7000
702 select SYS_HAS_CPU_NEVADA
703 select SYS_SUPPORTS_64BIT_KERNEL
704 select SYS_SUPPORTS_BIG_ENDIAN
706 If you want this kernel to run on SGI O2 workstation, say Y here.
709 bool "Sibyte BCM91120C-CRhine"
712 select SIBYTE_BCM1120
714 select SYS_HAS_CPU_SB1
715 select SYS_SUPPORTS_BIG_ENDIAN
716 select SYS_SUPPORTS_LITTLE_ENDIAN
719 bool "Sibyte BCM91120x-Carmel"
722 select SIBYTE_BCM1120
724 select SYS_HAS_CPU_SB1
725 select SYS_SUPPORTS_BIG_ENDIAN
726 select SYS_SUPPORTS_LITTLE_ENDIAN
729 bool "Sibyte BCM91125C-CRhone"
732 select SIBYTE_BCM1125
734 select SYS_HAS_CPU_SB1
735 select SYS_SUPPORTS_BIG_ENDIAN
736 select SYS_SUPPORTS_HIGHMEM
737 select SYS_SUPPORTS_LITTLE_ENDIAN
740 bool "Sibyte BCM91125E-Rhone"
743 select SIBYTE_BCM1125H
745 select SYS_HAS_CPU_SB1
746 select SYS_SUPPORTS_BIG_ENDIAN
747 select SYS_SUPPORTS_LITTLE_ENDIAN
750 bool "Sibyte BCM91250A-SWARM"
753 select HAVE_PATA_PLATFORM
756 select SYS_HAS_CPU_SB1
757 select SYS_SUPPORTS_BIG_ENDIAN
758 select SYS_SUPPORTS_HIGHMEM
759 select SYS_SUPPORTS_LITTLE_ENDIAN
760 select ZONE_DMA32 if 64BIT
762 config SIBYTE_LITTLESUR
763 bool "Sibyte BCM91250C2-LittleSur"
766 select HAVE_PATA_PLATFORM
769 select SYS_HAS_CPU_SB1
770 select SYS_SUPPORTS_BIG_ENDIAN
771 select SYS_SUPPORTS_HIGHMEM
772 select SYS_SUPPORTS_LITTLE_ENDIAN
774 config SIBYTE_SENTOSA
775 bool "Sibyte BCM91250E-Sentosa"
780 select SYS_HAS_CPU_SB1
781 select SYS_SUPPORTS_BIG_ENDIAN
782 select SYS_SUPPORTS_LITTLE_ENDIAN
785 bool "Sibyte BCM91480B-BigSur"
788 select NR_CPUS_DEFAULT_4
789 select SIBYTE_BCM1x80
791 select SYS_HAS_CPU_SB1
792 select SYS_SUPPORTS_BIG_ENDIAN
793 select SYS_SUPPORTS_HIGHMEM
794 select SYS_SUPPORTS_LITTLE_ENDIAN
795 select ZONE_DMA32 if 64BIT
798 bool "SNI RM200/300/400"
799 select FW_ARC if CPU_LITTLE_ENDIAN
800 select FW_ARC32 if CPU_LITTLE_ENDIAN
801 select FW_SNIPROM if CPU_BIG_ENDIAN
802 select ARCH_MAY_HAVE_PC_FDC
806 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
807 select DMA_NONCOHERENT
808 select GENERIC_ISA_DMA
809 select HAVE_PCSPKR_PLATFORM
816 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
817 select SYS_HAS_CPU_R4X00
818 select SYS_HAS_CPU_R5000
819 select SYS_HAS_CPU_R10000
820 select R5000_CPU_SCACHE
821 select SYS_HAS_EARLY_PRINTK
822 select SYS_SUPPORTS_32BIT_KERNEL
823 select SYS_SUPPORTS_64BIT_KERNEL
824 select SYS_SUPPORTS_BIG_ENDIAN
825 select SYS_SUPPORTS_HIGHMEM
826 select SYS_SUPPORTS_LITTLE_ENDIAN
828 The SNI RM200/300/400 are MIPS-based machines manufactured by
829 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
830 Technology and now in turn merged with Fujitsu. Say Y here to
831 support this machine type.
834 bool "Toshiba TX39 series based machines"
837 bool "Toshiba TX49 series based machines"
839 config MIKROTIK_RB532
840 bool "Mikrotik RB532 boards"
843 select DMA_NONCOHERENT
846 select SYS_HAS_CPU_MIPS32_R1
847 select SYS_SUPPORTS_32BIT_KERNEL
848 select SYS_SUPPORTS_LITTLE_ENDIAN
851 select ARCH_REQUIRE_GPIOLIB
852 select MIPS_L1_CACHE_SHIFT_4
854 Support the Mikrotik(tm) RouterBoard 532 series,
855 based on the IDT RC32434 SoC.
857 config CAVIUM_OCTEON_SOC
858 bool "Cavium Networks Octeon SoC based boards"
860 select ARCH_PHYS_ADDR_T_64BIT
862 select SYS_SUPPORTS_64BIT_KERNEL
863 select SYS_SUPPORTS_BIG_ENDIAN
865 select EDAC_ATOMIC_SCRUB
866 select SYS_SUPPORTS_LITTLE_ENDIAN
867 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
868 select SYS_HAS_EARLY_PRINTK
869 select SYS_HAS_CPU_CAVIUM_OCTEON
874 select ARCH_REQUIRE_GPIOLIB
877 select ARCH_SPARSEMEM_ENABLE
878 select SYS_SUPPORTS_SMP
879 select NR_CPUS_DEFAULT_16
881 select MTD_COMPLEX_MAPPINGS
883 This option supports all of the Octeon reference boards from Cavium
884 Networks. It builds a kernel that dynamically determines the Octeon
885 CPU type and supports all known board reference implementations.
886 Some of the supported boards are:
893 Say Y here for most Octeon reference boards.
896 bool "Netlogic XLR/XLS based systems"
899 select SYS_HAS_CPU_XLR
900 select SYS_SUPPORTS_SMP
903 select SYS_SUPPORTS_32BIT_KERNEL
904 select SYS_SUPPORTS_64BIT_KERNEL
905 select ARCH_PHYS_ADDR_T_64BIT
906 select SYS_SUPPORTS_BIG_ENDIAN
907 select SYS_SUPPORTS_HIGHMEM
909 select NR_CPUS_DEFAULT_32
913 select ZONE_DMA32 if 64BIT
915 select SYS_HAS_EARLY_PRINTK
916 select SYS_SUPPORTS_ZBOOT
917 select SYS_SUPPORTS_ZBOOT_UART16550
919 Support for systems based on Netlogic XLR and XLS processors.
920 Say Y here if you have a XLR or XLS based board.
923 bool "Netlogic XLP based systems"
926 select SYS_HAS_CPU_XLP
927 select SYS_SUPPORTS_SMP
929 select SYS_SUPPORTS_32BIT_KERNEL
930 select SYS_SUPPORTS_64BIT_KERNEL
931 select ARCH_PHYS_ADDR_T_64BIT
932 select ARCH_REQUIRE_GPIOLIB
933 select SYS_SUPPORTS_BIG_ENDIAN
934 select SYS_SUPPORTS_LITTLE_ENDIAN
935 select SYS_SUPPORTS_HIGHMEM
937 select NR_CPUS_DEFAULT_32
941 select ZONE_DMA32 if 64BIT
943 select SYS_HAS_EARLY_PRINTK
945 select SYS_SUPPORTS_ZBOOT
946 select SYS_SUPPORTS_ZBOOT_UART16550
948 This board is based on Netlogic XLP Processor.
949 Say Y here if you have a XLP based board.
952 bool "Para-Virtualized guest system"
956 select SYS_SUPPORTS_64BIT_KERNEL
957 select SYS_SUPPORTS_32BIT_KERNEL
958 select SYS_SUPPORTS_BIG_ENDIAN
959 select SYS_SUPPORTS_SMP
960 select NR_CPUS_DEFAULT_4
961 select SYS_HAS_EARLY_PRINTK
962 select SYS_HAS_CPU_MIPS32_R2
963 select SYS_HAS_CPU_MIPS64_R2
964 select SYS_HAS_CPU_CAVIUM_OCTEON
968 This option supports guest running under ????
972 source "arch/mips/alchemy/Kconfig"
973 source "arch/mips/ath25/Kconfig"
974 source "arch/mips/ath79/Kconfig"
975 source "arch/mips/bcm47xx/Kconfig"
976 source "arch/mips/bcm63xx/Kconfig"
977 source "arch/mips/bmips/Kconfig"
978 source "arch/mips/jazz/Kconfig"
979 source "arch/mips/jz4740/Kconfig"
980 source "arch/mips/lantiq/Kconfig"
981 source "arch/mips/lasat/Kconfig"
982 source "arch/mips/pistachio/Kconfig"
983 source "arch/mips/pmcs-msp71xx/Kconfig"
984 source "arch/mips/ralink/Kconfig"
985 source "arch/mips/sgi-ip27/Kconfig"
986 source "arch/mips/sibyte/Kconfig"
987 source "arch/mips/txx9/Kconfig"
988 source "arch/mips/vr41xx/Kconfig"
989 source "arch/mips/cavium-octeon/Kconfig"
990 source "arch/mips/loongson32/Kconfig"
991 source "arch/mips/loongson64/Kconfig"
992 source "arch/mips/netlogic/Kconfig"
993 source "arch/mips/paravirt/Kconfig"
994 source "arch/mips/xilfpga/Kconfig"
998 config RWSEM_GENERIC_SPINLOCK
1002 config RWSEM_XCHGADD_ALGORITHM
1005 config ARCH_HAS_ILOG2_U32
1009 config ARCH_HAS_ILOG2_U64
1013 config GENERIC_HWEIGHT
1017 config GENERIC_CALIBRATE_DELAY
1021 config SCHED_OMIT_FRAME_POINTER
1026 # Select some configuration options automatically based on user selections.
1031 config ARCH_MAY_HAVE_PC_FDC
1067 config MIPS_CLOCK_VSYSCALL
1068 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1071 select ARCH_REQUIRE_GPIOLIB
1077 config ARCH_DMA_ADDR_T_64BIT
1078 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1080 config ARCH_SUPPORTS_UPROBES
1083 config DMA_MAYBE_COHERENT
1084 select DMA_NONCOHERENT
1090 config DMA_NONCOHERENT
1092 select NEED_DMA_MAP_STATE
1094 config NEED_DMA_MAP_STATE
1097 config SYS_HAS_EARLY_PRINTK
1101 bool "Support for hot-pluggable CPUs"
1102 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
1104 Say Y here to allow turning CPUs off and on. CPUs can be
1105 controlled through /sys/devices/system/cpu.
1106 (Note: power management support will enable this option
1107 automatically on SMP systems. )
1108 Say N if you want to disable CPU hotplug.
1110 config SYS_SUPPORTS_HOTPLUG_CPU
1113 config MIPS_BONITO64
1128 config NO_IOPORT_MAP
1134 config GENERIC_ISA_DMA
1136 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1139 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1141 select GENERIC_ISA_DMA
1146 config HOLES_IN_ZONE
1150 # Endianness selection. Sufficiently obscure so many users don't know what to
1151 # answer,so we try hard to limit the available choices. Also the use of a
1152 # choice statement should be more obvious to the user.
1155 prompt "Endianness selection"
1157 Some MIPS machines can be configured for either little or big endian
1158 byte order. These modes require different kernels and a different
1159 Linux distribution. In general there is one preferred byteorder for a
1160 particular system but some systems are just as commonly used in the
1161 one or the other endianness.
1163 config CPU_BIG_ENDIAN
1165 depends on SYS_SUPPORTS_BIG_ENDIAN
1167 config CPU_LITTLE_ENDIAN
1168 bool "Little endian"
1169 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1176 config SYS_SUPPORTS_APM_EMULATION
1179 config SYS_SUPPORTS_BIG_ENDIAN
1182 config SYS_SUPPORTS_LITTLE_ENDIAN
1185 config SYS_SUPPORTS_HUGETLBFS
1187 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1190 config MIPS_HUGE_TLB_SUPPORT
1191 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1208 config PCI_GT64XXX_PCI0
1211 config NO_EXCEPT_FILL
1218 select DMA_NONCOHERENT
1220 select SWAP_IO_SPACE
1221 select SYS_HAS_CPU_R5500
1222 select SYS_SUPPORTS_32BIT_KERNEL
1223 select SYS_SUPPORTS_64BIT_KERNEL
1224 select SYS_SUPPORTS_BIG_ENDIAN
1231 select DMA_NONCOHERENT
1232 select SYS_HAS_CPU_MIPS32_R2
1233 select SYS_SUPPORTS_32BIT_KERNEL
1234 select SYS_SUPPORTS_LITTLE_ENDIAN
1235 select SYS_SUPPORTS_BIG_ENDIAN
1236 select SYS_SUPPORTS_MIPS16
1237 select CPU_MIPSR2_IRQ_VI
1246 config SWAP_IO_SPACE
1249 config SGI_HAS_INDYDOG
1261 config SGI_HAS_ZILOG
1264 config SGI_HAS_I8042
1267 config DEFAULT_SGI_PARTITION
1279 config MIPS_L1_CACHE_SHIFT_4
1282 config MIPS_L1_CACHE_SHIFT_5
1285 config MIPS_L1_CACHE_SHIFT_6
1288 config MIPS_L1_CACHE_SHIFT_7
1291 config MIPS_L1_CACHE_SHIFT
1293 default "7" if MIPS_L1_CACHE_SHIFT_7
1294 default "6" if MIPS_L1_CACHE_SHIFT_6
1295 default "5" if MIPS_L1_CACHE_SHIFT_5
1296 default "4" if MIPS_L1_CACHE_SHIFT_4
1299 config HAVE_STD_PC_SERIAL_PORT
1303 bool "ARC console support"
1304 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1308 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1313 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1322 menu "CPU selection"
1328 config CPU_LOONGSON3
1329 bool "Loongson 3 CPU"
1330 depends on SYS_HAS_CPU_LOONGSON3
1331 select CPU_SUPPORTS_64BIT_KERNEL
1332 select CPU_SUPPORTS_HIGHMEM
1333 select CPU_SUPPORTS_HUGEPAGES
1334 select WEAK_ORDERING
1335 select WEAK_REORDERING_BEYOND_LLSC
1336 select ARCH_REQUIRE_GPIOLIB
1338 The Loongson 3 processor implements the MIPS64R2 instruction
1339 set with many extensions.
1341 config CPU_LOONGSON2E
1343 depends on SYS_HAS_CPU_LOONGSON2E
1344 select CPU_LOONGSON2
1346 The Loongson 2E processor implements the MIPS III instruction set
1347 with many extensions.
1349 It has an internal FPGA northbridge, which is compatible to
1352 config CPU_LOONGSON2F
1354 depends on SYS_HAS_CPU_LOONGSON2F
1355 select CPU_LOONGSON2
1356 select ARCH_REQUIRE_GPIOLIB
1358 The Loongson 2F processor implements the MIPS III instruction set
1359 with many extensions.
1361 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1362 have a similar programming interface with FPGA northbridge used in
1365 config CPU_LOONGSON1B
1367 depends on SYS_HAS_CPU_LOONGSON1B
1368 select CPU_LOONGSON1
1370 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1371 release 2 instruction set.
1373 config CPU_MIPS32_R1
1374 bool "MIPS32 Release 1"
1375 depends on SYS_HAS_CPU_MIPS32_R1
1376 select CPU_HAS_PREFETCH
1377 select CPU_SUPPORTS_32BIT_KERNEL
1378 select CPU_SUPPORTS_HIGHMEM
1380 Choose this option to build a kernel for release 1 or later of the
1381 MIPS32 architecture. Most modern embedded systems with a 32-bit
1382 MIPS processor are based on a MIPS32 processor. If you know the
1383 specific type of processor in your system, choose those that one
1384 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1385 Release 2 of the MIPS32 architecture is available since several
1386 years so chances are you even have a MIPS32 Release 2 processor
1387 in which case you should choose CPU_MIPS32_R2 instead for better
1390 config CPU_MIPS32_R2
1391 bool "MIPS32 Release 2"
1392 depends on SYS_HAS_CPU_MIPS32_R2
1393 select CPU_HAS_PREFETCH
1394 select CPU_SUPPORTS_32BIT_KERNEL
1395 select CPU_SUPPORTS_HIGHMEM
1396 select CPU_SUPPORTS_MSA
1399 Choose this option to build a kernel for release 2 or later of the
1400 MIPS32 architecture. Most modern embedded systems with a 32-bit
1401 MIPS processor are based on a MIPS32 processor. If you know the
1402 specific type of processor in your system, choose those that one
1403 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1405 config CPU_MIPS32_R6
1406 bool "MIPS32 Release 6"
1407 depends on SYS_HAS_CPU_MIPS32_R6
1408 select CPU_HAS_PREFETCH
1409 select CPU_SUPPORTS_32BIT_KERNEL
1410 select CPU_SUPPORTS_HIGHMEM
1411 select CPU_SUPPORTS_MSA
1414 select MIPS_O32_FP64_SUPPORT
1416 Choose this option to build a kernel for release 6 or later of the
1417 MIPS32 architecture. New MIPS processors, starting with the Warrior
1418 family, are based on a MIPS32r6 processor. If you own an older
1419 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1421 config CPU_MIPS64_R1
1422 bool "MIPS64 Release 1"
1423 depends on SYS_HAS_CPU_MIPS64_R1
1424 select CPU_HAS_PREFETCH
1425 select CPU_SUPPORTS_32BIT_KERNEL
1426 select CPU_SUPPORTS_64BIT_KERNEL
1427 select CPU_SUPPORTS_HIGHMEM
1428 select CPU_SUPPORTS_HUGEPAGES
1430 Choose this option to build a kernel for release 1 or later of the
1431 MIPS64 architecture. Many modern embedded systems with a 64-bit
1432 MIPS processor are based on a MIPS64 processor. If you know the
1433 specific type of processor in your system, choose those that one
1434 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1435 Release 2 of the MIPS64 architecture is available since several
1436 years so chances are you even have a MIPS64 Release 2 processor
1437 in which case you should choose CPU_MIPS64_R2 instead for better
1440 config CPU_MIPS64_R2
1441 bool "MIPS64 Release 2"
1442 depends on SYS_HAS_CPU_MIPS64_R2
1443 select CPU_HAS_PREFETCH
1444 select CPU_SUPPORTS_32BIT_KERNEL
1445 select CPU_SUPPORTS_64BIT_KERNEL
1446 select CPU_SUPPORTS_HIGHMEM
1447 select CPU_SUPPORTS_HUGEPAGES
1448 select CPU_SUPPORTS_MSA
1450 Choose this option to build a kernel for release 2 or later of the
1451 MIPS64 architecture. Many modern embedded systems with a 64-bit
1452 MIPS processor are based on a MIPS64 processor. If you know the
1453 specific type of processor in your system, choose those that one
1454 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1456 config CPU_MIPS64_R6
1457 bool "MIPS64 Release 6"
1458 depends on SYS_HAS_CPU_MIPS64_R6
1459 select CPU_HAS_PREFETCH
1460 select CPU_SUPPORTS_32BIT_KERNEL
1461 select CPU_SUPPORTS_64BIT_KERNEL
1462 select CPU_SUPPORTS_HIGHMEM
1463 select CPU_SUPPORTS_MSA
1465 select MIPS_O32_FP64_SUPPORT if MIPS32_O32
1467 Choose this option to build a kernel for release 6 or later of the
1468 MIPS64 architecture. New MIPS processors, starting with the Warrior
1469 family, are based on a MIPS64r6 processor. If you own an older
1470 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1474 depends on SYS_HAS_CPU_R3000
1476 select CPU_SUPPORTS_32BIT_KERNEL
1477 select CPU_SUPPORTS_HIGHMEM
1479 Please make sure to pick the right CPU type. Linux/MIPS is not
1480 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1481 *not* work on R4000 machines and vice versa. However, since most
1482 of the supported machines have an R4000 (or similar) CPU, R4x00
1483 might be a safe bet. If the resulting kernel does not work,
1484 try to recompile with R3000.
1488 depends on SYS_HAS_CPU_TX39XX
1489 select CPU_SUPPORTS_32BIT_KERNEL
1493 depends on SYS_HAS_CPU_VR41XX
1494 select CPU_SUPPORTS_32BIT_KERNEL
1495 select CPU_SUPPORTS_64BIT_KERNEL
1497 The options selects support for the NEC VR4100 series of processors.
1498 Only choose this option if you have one of these processors as a
1499 kernel built with this option will not run on any other type of
1500 processor or vice versa.
1504 depends on SYS_HAS_CPU_R4300
1505 select CPU_SUPPORTS_32BIT_KERNEL
1506 select CPU_SUPPORTS_64BIT_KERNEL
1508 MIPS Technologies R4300-series processors.
1512 depends on SYS_HAS_CPU_R4X00
1513 select CPU_SUPPORTS_32BIT_KERNEL
1514 select CPU_SUPPORTS_64BIT_KERNEL
1515 select CPU_SUPPORTS_HUGEPAGES
1517 MIPS Technologies R4000-series processors other than 4300, including
1518 the R4000, R4400, R4600, and 4700.
1522 depends on SYS_HAS_CPU_TX49XX
1523 select CPU_HAS_PREFETCH
1524 select CPU_SUPPORTS_32BIT_KERNEL
1525 select CPU_SUPPORTS_64BIT_KERNEL
1526 select CPU_SUPPORTS_HUGEPAGES
1530 depends on SYS_HAS_CPU_R5000
1531 select CPU_SUPPORTS_32BIT_KERNEL
1532 select CPU_SUPPORTS_64BIT_KERNEL
1533 select CPU_SUPPORTS_HUGEPAGES
1535 MIPS Technologies R5000-series processors other than the Nevada.
1539 depends on SYS_HAS_CPU_R5432
1540 select CPU_SUPPORTS_32BIT_KERNEL
1541 select CPU_SUPPORTS_64BIT_KERNEL
1542 select CPU_SUPPORTS_HUGEPAGES
1546 depends on SYS_HAS_CPU_R5500
1547 select CPU_SUPPORTS_32BIT_KERNEL
1548 select CPU_SUPPORTS_64BIT_KERNEL
1549 select CPU_SUPPORTS_HUGEPAGES
1551 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1556 depends on SYS_HAS_CPU_R6000
1557 select CPU_SUPPORTS_32BIT_KERNEL
1559 MIPS Technologies R6000 and R6000A series processors. Note these
1560 processors are extremely rare and the support for them is incomplete.
1564 depends on SYS_HAS_CPU_NEVADA
1565 select CPU_SUPPORTS_32BIT_KERNEL
1566 select CPU_SUPPORTS_64BIT_KERNEL
1567 select CPU_SUPPORTS_HUGEPAGES
1569 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1573 depends on SYS_HAS_CPU_R8000
1574 select CPU_HAS_PREFETCH
1575 select CPU_SUPPORTS_64BIT_KERNEL
1577 MIPS Technologies R8000 processors. Note these processors are
1578 uncommon and the support for them is incomplete.
1582 depends on SYS_HAS_CPU_R10000
1583 select CPU_HAS_PREFETCH
1584 select CPU_SUPPORTS_32BIT_KERNEL
1585 select CPU_SUPPORTS_64BIT_KERNEL
1586 select CPU_SUPPORTS_HIGHMEM
1587 select CPU_SUPPORTS_HUGEPAGES
1589 MIPS Technologies R10000-series processors.
1593 depends on SYS_HAS_CPU_RM7000
1594 select CPU_HAS_PREFETCH
1595 select CPU_SUPPORTS_32BIT_KERNEL
1596 select CPU_SUPPORTS_64BIT_KERNEL
1597 select CPU_SUPPORTS_HIGHMEM
1598 select CPU_SUPPORTS_HUGEPAGES
1602 depends on SYS_HAS_CPU_SB1
1603 select CPU_SUPPORTS_32BIT_KERNEL
1604 select CPU_SUPPORTS_64BIT_KERNEL
1605 select CPU_SUPPORTS_HIGHMEM
1606 select CPU_SUPPORTS_HUGEPAGES
1607 select WEAK_ORDERING
1609 config CPU_CAVIUM_OCTEON
1610 bool "Cavium Octeon processor"
1611 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1612 select CPU_HAS_PREFETCH
1613 select CPU_SUPPORTS_64BIT_KERNEL
1614 select WEAK_ORDERING
1615 select CPU_SUPPORTS_HIGHMEM
1616 select CPU_SUPPORTS_HUGEPAGES
1617 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1618 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1619 select MIPS_L1_CACHE_SHIFT_7
1621 The Cavium Octeon processor is a highly integrated chip containing
1622 many ethernet hardware widgets for networking tasks. The processor
1623 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1624 Full details can be found at http://www.caviumnetworks.com.
1627 bool "Broadcom BMIPS"
1628 depends on SYS_HAS_CPU_BMIPS
1630 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1631 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1632 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1633 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1634 select CPU_SUPPORTS_32BIT_KERNEL
1635 select DMA_NONCOHERENT
1637 select SWAP_IO_SPACE
1638 select WEAK_ORDERING
1639 select CPU_SUPPORTS_HIGHMEM
1640 select CPU_HAS_PREFETCH
1642 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1645 bool "Netlogic XLR SoC"
1646 depends on SYS_HAS_CPU_XLR
1647 select CPU_SUPPORTS_32BIT_KERNEL
1648 select CPU_SUPPORTS_64BIT_KERNEL
1649 select CPU_SUPPORTS_HIGHMEM
1650 select CPU_SUPPORTS_HUGEPAGES
1651 select WEAK_ORDERING
1652 select WEAK_REORDERING_BEYOND_LLSC
1654 Netlogic Microsystems XLR/XLS processors.
1657 bool "Netlogic XLP SoC"
1658 depends on SYS_HAS_CPU_XLP
1659 select CPU_SUPPORTS_32BIT_KERNEL
1660 select CPU_SUPPORTS_64BIT_KERNEL
1661 select CPU_SUPPORTS_HIGHMEM
1662 select WEAK_ORDERING
1663 select WEAK_REORDERING_BEYOND_LLSC
1664 select CPU_HAS_PREFETCH
1666 select CPU_SUPPORTS_HUGEPAGES
1668 Netlogic Microsystems XLP processors.
1671 config CPU_MIPS32_3_5_FEATURES
1672 bool "MIPS32 Release 3.5 Features"
1673 depends on SYS_HAS_CPU_MIPS32_R3_5
1674 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1676 Choose this option to build a kernel for release 2 or later of the
1677 MIPS32 architecture including features from the 3.5 release such as
1678 support for Enhanced Virtual Addressing (EVA).
1680 config CPU_MIPS32_3_5_EVA
1681 bool "Enhanced Virtual Addressing (EVA)"
1682 depends on CPU_MIPS32_3_5_FEATURES
1686 Choose this option if you want to enable the Enhanced Virtual
1687 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1688 One of its primary benefits is an increase in the maximum size
1689 of lowmem (up to 3GB). If unsure, say 'N' here.
1691 config CPU_MIPS32_R5_FEATURES
1692 bool "MIPS32 Release 5 Features"
1693 depends on SYS_HAS_CPU_MIPS32_R5
1694 depends on CPU_MIPS32_R2
1696 Choose this option to build a kernel for release 2 or later of the
1697 MIPS32 architecture including features from release 5 such as
1698 support for Extended Physical Addressing (XPA).
1700 config CPU_MIPS32_R5_XPA
1701 bool "Extended Physical Addressing (XPA)"
1702 depends on CPU_MIPS32_R5_FEATURES
1704 depends on !PAGE_SIZE_4KB
1705 depends on SYS_SUPPORTS_HIGHMEM
1708 select ARCH_PHYS_ADDR_T_64BIT
1711 Choose this option if you want to enable the Extended Physical
1712 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1713 benefit is to increase physical addressing equal to or greater
1714 than 40 bits. Note that this has the side effect of turning on
1715 64-bit addressing which in turn makes the PTEs 64-bit in size.
1716 If unsure, say 'N' here.
1719 config CPU_NOP_WORKAROUNDS
1722 config CPU_JUMP_WORKAROUNDS
1725 config CPU_LOONGSON2F_WORKAROUNDS
1726 bool "Loongson 2F Workarounds"
1728 select CPU_NOP_WORKAROUNDS
1729 select CPU_JUMP_WORKAROUNDS
1731 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1732 require workarounds. Without workarounds the system may hang
1733 unexpectedly. For more information please refer to the gas
1734 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1736 Loongson 2F03 and later have fixed these issues and no workarounds
1737 are needed. The workarounds have no significant side effect on them
1738 but may decrease the performance of the system so this option should
1739 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1742 If unsure, please say Y.
1743 endif # CPU_LOONGSON2F
1745 config SYS_SUPPORTS_ZBOOT
1747 select HAVE_KERNEL_GZIP
1748 select HAVE_KERNEL_BZIP2
1749 select HAVE_KERNEL_LZ4
1750 select HAVE_KERNEL_LZMA
1751 select HAVE_KERNEL_LZO
1752 select HAVE_KERNEL_XZ
1754 config SYS_SUPPORTS_ZBOOT_UART16550
1756 select SYS_SUPPORTS_ZBOOT
1758 config CPU_LOONGSON2
1760 select CPU_SUPPORTS_32BIT_KERNEL
1761 select CPU_SUPPORTS_64BIT_KERNEL
1762 select CPU_SUPPORTS_HIGHMEM
1763 select CPU_SUPPORTS_HUGEPAGES
1765 config CPU_LOONGSON1
1769 select CPU_HAS_PREFETCH
1770 select CPU_SUPPORTS_32BIT_KERNEL
1771 select CPU_SUPPORTS_HIGHMEM
1772 select CPU_SUPPORTS_CPUFREQ
1774 config CPU_BMIPS32_3300
1775 select SMP_UP if SMP
1778 config CPU_BMIPS4350
1780 select SYS_SUPPORTS_SMP
1781 select SYS_SUPPORTS_HOTPLUG_CPU
1783 config CPU_BMIPS4380
1785 select MIPS_L1_CACHE_SHIFT_6
1786 select SYS_SUPPORTS_SMP
1787 select SYS_SUPPORTS_HOTPLUG_CPU
1789 config CPU_BMIPS5000
1791 select MIPS_CPU_SCACHE
1792 select MIPS_L1_CACHE_SHIFT_7
1793 select SYS_SUPPORTS_SMP
1794 select SYS_SUPPORTS_HOTPLUG_CPU
1796 config SYS_HAS_CPU_LOONGSON3
1798 select CPU_SUPPORTS_CPUFREQ
1800 config SYS_HAS_CPU_LOONGSON2E
1803 config SYS_HAS_CPU_LOONGSON2F
1805 select CPU_SUPPORTS_CPUFREQ
1806 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1807 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1809 config SYS_HAS_CPU_LOONGSON1B
1812 config SYS_HAS_CPU_MIPS32_R1
1815 config SYS_HAS_CPU_MIPS32_R2
1818 config SYS_HAS_CPU_MIPS32_R3_5
1821 config SYS_HAS_CPU_MIPS32_R5
1824 config SYS_HAS_CPU_MIPS32_R6
1827 config SYS_HAS_CPU_MIPS64_R1
1830 config SYS_HAS_CPU_MIPS64_R2
1833 config SYS_HAS_CPU_MIPS64_R6
1836 config SYS_HAS_CPU_R3000
1839 config SYS_HAS_CPU_TX39XX
1842 config SYS_HAS_CPU_VR41XX
1845 config SYS_HAS_CPU_R4300
1848 config SYS_HAS_CPU_R4X00
1851 config SYS_HAS_CPU_TX49XX
1854 config SYS_HAS_CPU_R5000
1857 config SYS_HAS_CPU_R5432
1860 config SYS_HAS_CPU_R5500
1863 config SYS_HAS_CPU_R6000
1866 config SYS_HAS_CPU_NEVADA
1869 config SYS_HAS_CPU_R8000
1872 config SYS_HAS_CPU_R10000
1875 config SYS_HAS_CPU_RM7000
1878 config SYS_HAS_CPU_SB1
1881 config SYS_HAS_CPU_CAVIUM_OCTEON
1884 config SYS_HAS_CPU_BMIPS
1887 config SYS_HAS_CPU_BMIPS32_3300
1889 select SYS_HAS_CPU_BMIPS
1891 config SYS_HAS_CPU_BMIPS4350
1893 select SYS_HAS_CPU_BMIPS
1895 config SYS_HAS_CPU_BMIPS4380
1897 select SYS_HAS_CPU_BMIPS
1899 config SYS_HAS_CPU_BMIPS5000
1901 select SYS_HAS_CPU_BMIPS
1903 config SYS_HAS_CPU_XLR
1906 config SYS_HAS_CPU_XLP
1909 config MIPS_MALTA_PM
1910 depends on MIPS_MALTA
1916 # CPU may reorder R->R, R->W, W->R, W->W
1917 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1919 config WEAK_ORDERING
1923 # CPU may reorder reads and writes beyond LL/SC
1924 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1926 config WEAK_REORDERING_BEYOND_LLSC
1931 # These two indicate any level of the MIPS32 and MIPS64 architecture
1935 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1939 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1942 # These two indicate the revision of the architecture, either Release 1 or Release 2
1946 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1950 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1955 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1964 config SYS_SUPPORTS_32BIT_KERNEL
1966 config SYS_SUPPORTS_64BIT_KERNEL
1968 config CPU_SUPPORTS_32BIT_KERNEL
1970 config CPU_SUPPORTS_64BIT_KERNEL
1972 config CPU_SUPPORTS_CPUFREQ
1974 config CPU_SUPPORTS_ADDRWINCFG
1976 config CPU_SUPPORTS_HUGEPAGES
1978 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1980 config MIPS_PGD_C0_CONTEXT
1982 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1985 # Set to y for ptrace access to watch registers.
1987 config HARDWARE_WATCHPOINTS
1989 default y if CPU_MIPSR1 || CPU_MIPSR2
1994 prompt "Kernel code model"
1996 You should only select this option if you have a workload that
1997 actually benefits from 64-bit processing or if your machine has
1998 large memory. You will only be presented a single option in this
1999 menu if your system does not support both 32-bit and 64-bit kernels.
2002 bool "32-bit kernel"
2003 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2006 Select this option if you want to build a 32-bit kernel.
2009 bool "64-bit kernel"
2010 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2012 Select this option if you want to build a 64-bit kernel.
2017 bool "KVM Guest Kernel"
2018 depends on BROKEN_ON_SMP
2020 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
2022 config KVM_GUEST_TIMER_FREQ
2023 int "Count/Compare Timer Frequency (MHz)"
2024 depends on KVM_GUEST
2027 Set this to non-zero if building a guest kernel for KVM to skip RTC
2028 emulation when determining guest CPU Frequency. Instead, the guest's
2029 timer frequency is specified directly.
2032 prompt "Kernel page size"
2033 default PAGE_SIZE_4KB
2035 config PAGE_SIZE_4KB
2037 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2039 This option select the standard 4kB Linux page size. On some
2040 R3000-family processors this is the only available page size. Using
2041 4kB page size will minimize memory consumption and is therefore
2042 recommended for low memory systems.
2044 config PAGE_SIZE_8KB
2046 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2048 Using 8kB page size will result in higher performance kernel at
2049 the price of higher memory consumption. This option is available
2050 only on R8000 and cnMIPS processors. Note that you will need a
2051 suitable Linux distribution to support this.
2053 config PAGE_SIZE_16KB
2055 depends on !CPU_R3000 && !CPU_TX39XX
2057 Using 16kB page size will result in higher performance kernel at
2058 the price of higher memory consumption. This option is available on
2059 all non-R3000 family processors. Note that you will need a suitable
2060 Linux distribution to support this.
2062 config PAGE_SIZE_32KB
2064 depends on CPU_CAVIUM_OCTEON
2066 Using 32kB page size will result in higher performance kernel at
2067 the price of higher memory consumption. This option is available
2068 only on cnMIPS cores. Note that you will need a suitable Linux
2069 distribution to support this.
2071 config PAGE_SIZE_64KB
2073 depends on !CPU_R3000 && !CPU_TX39XX
2075 Using 64kB page size will result in higher performance kernel at
2076 the price of higher memory consumption. This option is available on
2077 all non-R3000 family processor. Not that at the time of this
2078 writing this option is still high experimental.
2082 config FORCE_MAX_ZONEORDER
2083 int "Maximum zone order"
2084 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2085 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2086 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2087 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2088 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2089 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2093 The kernel memory allocator divides physically contiguous memory
2094 blocks into "zones", where each zone is a power of two number of
2095 pages. This option selects the largest power of two that the kernel
2096 keeps in the memory allocator. If you need to allocate very large
2097 blocks of physically contiguous memory, then you may need to
2098 increase this value.
2100 This config option is actually maximum order plus one. For example,
2101 a value of 11 means that the largest free memory block is 2^10 pages.
2103 The page size is not necessarily 4KB. Keep this in mind
2104 when choosing a value for this option.
2109 config IP22_CPU_SCACHE
2114 # Support for a MIPS32 / MIPS64 style S-caches
2116 config MIPS_CPU_SCACHE
2120 config R5000_CPU_SCACHE
2124 config RM7000_CPU_SCACHE
2128 config SIBYTE_DMA_PAGEOPS
2129 bool "Use DMA to clear/copy pages"
2132 Instead of using the CPU to zero and copy pages, use a Data Mover
2133 channel. These DMA channels are otherwise unused by the standard
2134 SiByte Linux port. Seems to give a small performance benefit.
2136 config CPU_HAS_PREFETCH
2139 config CPU_GENERIC_DUMP_TLB
2141 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2145 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2147 config CPU_R4K_CACHE_TLB
2149 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2152 bool "MIPS MT SMP support (1 TC on each available VPE)"
2153 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2154 select CPU_MIPSR2_IRQ_VI
2155 select CPU_MIPSR2_IRQ_EI
2161 select SYS_SUPPORTS_SMP
2162 select SYS_SUPPORTS_SCHED_SMT
2163 select MIPS_PERF_SHARED_TC_COUNTERS
2165 This is a kernel model which is known as SMVP. This is supported
2166 on cores with the MT ASE and uses the available VPEs to implement
2167 virtual processors which supports SMP. This is equivalent to the
2168 Intel Hyperthreading feature. For further information go to
2169 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2175 bool "SMT (multithreading) scheduler support"
2176 depends on SYS_SUPPORTS_SCHED_SMT
2179 SMT scheduler support improves the CPU scheduler's decision making
2180 when dealing with MIPS MT enabled cores at a cost of slightly
2181 increased overhead in some places. If unsure say N here.
2183 config SYS_SUPPORTS_SCHED_SMT
2186 config SYS_SUPPORTS_MULTITHREADING
2189 config MIPS_MT_FPAFF
2190 bool "Dynamic FPU affinity for FP-intensive threads"
2192 depends on MIPS_MT_SMP
2194 config MIPSR2_TO_R6_EMULATOR
2195 bool "MIPS R2-to-R6 emulator"
2196 depends on CPU_MIPSR6 && !SMP
2199 Choose this option if you want to run non-R6 MIPS userland code.
2200 Even if you say 'Y' here, the emulator will still be disabled by
2201 default. You can enable it using the 'mipsr2emu' kernel option.
2202 The only reason this is a build-time option is to save ~14K from the
2204 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2205 depends on SMP && CPU_MIPSR6
2207 config MIPS_VPE_LOADER
2208 bool "VPE loader support."
2209 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2210 select CPU_MIPSR2_IRQ_VI
2211 select CPU_MIPSR2_IRQ_EI
2214 Includes a loader for loading an elf relocatable object
2215 onto another VPE and running it.
2217 config MIPS_VPE_LOADER_CMP
2220 depends on MIPS_VPE_LOADER && MIPS_CMP
2222 config MIPS_VPE_LOADER_MT
2225 depends on MIPS_VPE_LOADER && !MIPS_CMP
2227 config MIPS_VPE_LOADER_TOM
2228 bool "Load VPE program into memory hidden from linux"
2229 depends on MIPS_VPE_LOADER
2232 The loader can use memory that is present but has been hidden from
2233 Linux using the kernel command line option "mem=xxMB". It's up to
2234 you to ensure the amount you put in the option and the space your
2235 program requires is less or equal to the amount physically present.
2237 config MIPS_VPE_APSP_API
2238 bool "Enable support for AP/SP API (RTLX)"
2239 depends on MIPS_VPE_LOADER
2242 config MIPS_VPE_APSP_API_CMP
2245 depends on MIPS_VPE_APSP_API && MIPS_CMP
2247 config MIPS_VPE_APSP_API_MT
2250 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2253 bool "MIPS CMP framework support (DEPRECATED)"
2254 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2258 select SYS_SUPPORTS_SMP
2259 select WEAK_ORDERING
2262 Select this if you are using a bootloader which implements the "CMP
2263 framework" protocol (ie. YAMON) and want your kernel to make use of
2264 its ability to start secondary CPUs.
2266 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2270 bool "MIPS Coherent Processing System support"
2271 depends on SYS_SUPPORTS_MIPS_CPS && !CPU_MIPSR6
2274 select MIPS_CPS_PM if HOTPLUG_CPU
2277 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2278 select SYS_SUPPORTS_HOTPLUG_CPU
2279 select SYS_SUPPORTS_SMP
2280 select WEAK_ORDERING
2282 Select this if you wish to run an SMP kernel across multiple cores
2283 within a MIPS Coherent Processing System. When this option is
2284 enabled the kernel will probe for other cores and boot them with
2285 no external assistance. It is safe to enable this when hardware
2286 support is unavailable.
2302 config SB1_PASS_2_WORKAROUNDS
2304 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2307 config SB1_PASS_2_1_WORKAROUNDS
2309 depends on CPU_SB1 && CPU_SB1_PASS_2
2313 config ARCH_PHYS_ADDR_T_64BIT
2317 prompt "SmartMIPS or microMIPS ASE support"
2319 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2322 Select this if you want neither microMIPS nor SmartMIPS support
2324 config CPU_HAS_SMARTMIPS
2325 depends on SYS_SUPPORTS_SMARTMIPS
2328 SmartMIPS is a extension of the MIPS32 architecture aimed at
2329 increased security at both hardware and software level for
2330 smartcards. Enabling this option will allow proper use of the
2331 SmartMIPS instructions by Linux applications. However a kernel with
2332 this option will not work on a MIPS core without SmartMIPS core. If
2333 you don't know you probably don't have SmartMIPS and should say N
2336 config CPU_MICROMIPS
2337 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2340 When this option is enabled the kernel will be built using the
2346 bool "Support for the MIPS SIMD Architecture"
2347 depends on CPU_SUPPORTS_MSA
2348 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2350 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2351 and a set of SIMD instructions to operate on them. When this option
2352 is enabled the kernel will support allocating & switching MSA
2353 vector register contexts. If you know that your kernel will only be
2354 running on CPUs which do not support MSA or that your userland will
2355 not be making use of it then you may wish to say N here to reduce
2356 the size & complexity of your kernel.
2367 # Vectored interrupt mode is an R2 feature
2369 config CPU_MIPSR2_IRQ_VI
2373 # Extended interrupt mode is an R2 feature
2375 config CPU_MIPSR2_IRQ_EI
2380 depends on !CPU_R3000
2386 config CPU_DADDI_WORKAROUNDS
2389 config CPU_R4000_WORKAROUNDS
2391 select CPU_R4400_WORKAROUNDS
2393 config CPU_R4400_WORKAROUNDS
2397 # - Highmem only makes sense for the 32-bit kernel.
2398 # - The current highmem code will only work properly on physically indexed
2399 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2400 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2401 # moment we protect the user and offer the highmem option only on machines
2402 # where it's known to be safe. This will not offer highmem on a few systems
2403 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2404 # indexed CPUs but we're playing safe.
2405 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2406 # know they might have memory configurations that could make use of highmem
2410 bool "High Memory Support"
2411 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2413 config CPU_SUPPORTS_HIGHMEM
2416 config SYS_SUPPORTS_HIGHMEM
2419 config SYS_SUPPORTS_SMARTMIPS
2422 config SYS_SUPPORTS_MICROMIPS
2425 config SYS_SUPPORTS_MIPS16
2428 This option must be set if a kernel might be executed on a MIPS16-
2429 enabled CPU even if MIPS16 is not actually being used. In other
2430 words, it makes the kernel MIPS16-tolerant.
2432 config CPU_SUPPORTS_MSA
2435 config ARCH_FLATMEM_ENABLE
2437 depends on !NUMA && !CPU_LOONGSON2
2439 config ARCH_DISCONTIGMEM_ENABLE
2441 default y if SGI_IP27
2443 Say Y to support efficient handling of discontiguous physical memory,
2444 for architectures which are either NUMA (Non-Uniform Memory Access)
2445 or have huge holes in the physical address space for other reasons.
2446 See <file:Documentation/vm/numa> for more.
2448 config ARCH_SPARSEMEM_ENABLE
2450 select SPARSEMEM_STATIC
2454 depends on SYS_SUPPORTS_NUMA
2456 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2457 Access). This option improves performance on systems with more
2458 than two nodes; on two node systems it is generally better to
2459 leave it disabled; on single node systems disable this option
2462 config SYS_SUPPORTS_NUMA
2468 depends on NEED_MULTIPLE_NODES
2470 config HW_PERF_EVENTS
2471 bool "Enable hardware performance counter support for perf events"
2472 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2475 Enable hardware performance counter support for perf events. If
2476 disabled, perf events will use software events only.
2481 bool "Multi-Processing support"
2482 depends on SYS_SUPPORTS_SMP
2484 This enables support for systems with more than one CPU. If you have
2485 a system with only one CPU, say N. If you have a system with more
2486 than one CPU, say Y.
2488 If you say N here, the kernel will run on uni- and multiprocessor
2489 machines, but will use only one CPU of a multiprocessor machine. If
2490 you say Y here, the kernel will run on many, but not all,
2491 uniprocessor machines. On a uniprocessor machine, the kernel
2492 will run faster if you say N here.
2494 People using multiprocessor machines who say Y here should also say
2495 Y to "Enhanced Real Time Clock Support", below.
2497 See also the SMP-HOWTO available at
2498 <http://www.tldp.org/docs.html#howto>.
2500 If you don't know what to do here, say N.
2505 config SYS_SUPPORTS_MIPS_CMP
2508 config SYS_SUPPORTS_MIPS_CPS
2511 config SYS_SUPPORTS_SMP
2514 config NR_CPUS_DEFAULT_4
2517 config NR_CPUS_DEFAULT_8
2520 config NR_CPUS_DEFAULT_16
2523 config NR_CPUS_DEFAULT_32
2526 config NR_CPUS_DEFAULT_64
2530 int "Maximum number of CPUs (2-256)"
2533 default "4" if NR_CPUS_DEFAULT_4
2534 default "8" if NR_CPUS_DEFAULT_8
2535 default "16" if NR_CPUS_DEFAULT_16
2536 default "32" if NR_CPUS_DEFAULT_32
2537 default "64" if NR_CPUS_DEFAULT_64
2539 This allows you to specify the maximum number of CPUs which this
2540 kernel will support. The maximum supported value is 32 for 32-bit
2541 kernel and 64 for 64-bit kernels; the minimum value which makes
2542 sense is 1 for Qemu (useful only for kernel debugging purposes)
2543 and 2 for all others.
2545 This is purely to save memory - each supported CPU adds
2546 approximately eight kilobytes to the kernel image. For best
2547 performance should round up your number of processors to the next
2550 config MIPS_PERF_SHARED_TC_COUNTERS
2554 # Timer Interrupt Frequency Configuration
2558 prompt "Timer frequency"
2561 Allows the configuration of the timer frequency.
2564 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2567 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2570 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2573 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2576 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2579 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2582 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2585 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2589 config SYS_SUPPORTS_24HZ
2592 config SYS_SUPPORTS_48HZ
2595 config SYS_SUPPORTS_100HZ
2598 config SYS_SUPPORTS_128HZ
2601 config SYS_SUPPORTS_250HZ
2604 config SYS_SUPPORTS_256HZ
2607 config SYS_SUPPORTS_1000HZ
2610 config SYS_SUPPORTS_1024HZ
2613 config SYS_SUPPORTS_ARBIT_HZ
2615 default y if !SYS_SUPPORTS_24HZ && \
2616 !SYS_SUPPORTS_48HZ && \
2617 !SYS_SUPPORTS_100HZ && \
2618 !SYS_SUPPORTS_128HZ && \
2619 !SYS_SUPPORTS_250HZ && \
2620 !SYS_SUPPORTS_256HZ && \
2621 !SYS_SUPPORTS_1000HZ && \
2622 !SYS_SUPPORTS_1024HZ
2628 default 100 if HZ_100
2629 default 128 if HZ_128
2630 default 250 if HZ_250
2631 default 256 if HZ_256
2632 default 1000 if HZ_1000
2633 default 1024 if HZ_1024
2636 def_bool HIGH_RES_TIMERS
2638 source "kernel/Kconfig.preempt"
2641 bool "Kexec system call"
2644 kexec is a system call that implements the ability to shutdown your
2645 current kernel, and to start another kernel. It is like a reboot
2646 but it is independent of the system firmware. And like a reboot
2647 you can start any kernel with it, not just Linux.
2649 The name comes from the similarity to the exec system call.
2651 It is an ongoing process to be certain the hardware in a machine
2652 is properly shutdown, so do not be surprised if this code does not
2653 initially work for you. As of this writing the exact hardware
2654 interface is strongly in flux, so no good recommendation can be
2658 bool "Kernel crash dumps"
2660 Generate crash dump after being started by kexec.
2661 This should be normally only set in special crash dump kernels
2662 which are loaded in the main kernel with kexec-tools into
2663 a specially reserved region and then later executed after
2664 a crash by kdump/kexec. The crash dump kernel must be compiled
2665 to a memory address not used by the main kernel or firmware using
2668 config PHYSICAL_START
2669 hex "Physical address where the kernel is loaded"
2670 default "0xffffffff84000000" if 64BIT
2671 default "0x84000000" if 32BIT
2672 depends on CRASH_DUMP
2674 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2675 If you plan to use kernel for capturing the crash dump change
2676 this value to start of the reserved region (the "X" value as
2677 specified in the "crashkernel=YM@XM" command line boot parameter
2678 passed to the panic-ed kernel).
2681 bool "Enable seccomp to safely compute untrusted bytecode"
2685 This kernel feature is useful for number crunching applications
2686 that may need to compute untrusted bytecode during their
2687 execution. By using pipes or other transports made available to
2688 the process as file descriptors supporting the read/write
2689 syscalls, it's possible to isolate those applications in
2690 their own address space using seccomp. Once seccomp is
2691 enabled via /proc/<pid>/seccomp, it cannot be disabled
2692 and the task is only allowed to execute a few safe syscalls
2693 defined by each seccomp mode.
2695 If unsure, say Y. Only embedded should say N here.
2697 config MIPS_O32_FP64_SUPPORT
2698 bool "Support for O32 binaries using 64-bit FP"
2699 depends on 32BIT || MIPS32_O32
2701 When this is enabled, the kernel will support use of 64-bit floating
2702 point registers with binaries using the O32 ABI along with the
2703 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2704 32-bit MIPS systems this support is at the cost of increasing the
2705 size and complexity of the compiled FPU emulator. Thus if you are
2706 running a MIPS32 system and know that none of your userland binaries
2707 will require 64-bit floating point, you may wish to reduce the size
2708 of your kernel & potentially improve FP emulation performance by
2711 Although binutils currently supports use of this flag the details
2712 concerning its effect upon the O32 ABI in userland are still being
2713 worked on. In order to avoid userland becoming dependant upon current
2714 behaviour before the details have been finalised, this option should
2715 be considered experimental and only enabled by those working upon
2723 select OF_EARLY_FLATTREE
2730 prompt "Kernel appended dtb support" if USE_OF
2731 default MIPS_NO_APPENDED_DTB
2733 config MIPS_NO_APPENDED_DTB
2736 Do not enable appended dtb support.
2738 config MIPS_ELF_APPENDED_DTB
2741 With this option, the boot code will look for a device tree binary
2742 DTB) included in the vmlinux ELF section .appended_dtb. By default
2743 it is empty and the DTB can be appended using binutils command
2746 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2748 This is meant as a backward compatiblity convenience for those
2749 systems with a bootloader that can't be upgraded to accommodate
2750 the documented boot protocol using a device tree.
2752 config MIPS_RAW_APPENDED_DTB
2755 With this option, the boot code will look for a device tree binary
2756 DTB) appended to raw vmlinux.bin (without decompressor).
2757 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2759 This is meant as a backward compatibility convenience for those
2760 systems with a bootloader that can't be upgraded to accommodate
2761 the documented boot protocol using a device tree.
2763 Beware that there is very little in terms of protection against
2764 this option being confused by leftover garbage in memory that might
2765 look like a DTB header after a reboot if no actual DTB is appended
2766 to vmlinux.bin. Do not leave this option active in a production kernel
2767 if you don't intend to always append a DTB.
2769 config MIPS_ZBOOT_APPENDED_DTB
2771 depends on SYS_SUPPORTS_ZBOOT
2773 With this option, the boot code will look for a device tree binary
2774 DTB) appended to raw vmlinuz.bin (with decompressor).
2775 (e.g. cat vmlinuz.bin <filename>.dtb > vmlinuz_w_dtb).
2777 This is meant as a backward compatibility convenience for those
2778 systems with a bootloader that can't be upgraded to accommodate
2779 the documented boot protocol using a device tree.
2781 Beware that there is very little in terms of protection against
2782 this option being confused by leftover garbage in memory that might
2783 look like a DTB header after a reboot if no actual DTB is appended
2784 to vmlinuz.bin. Do not leave this option active in a production kernel
2785 if you don't intend to always append a DTB.
2789 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2790 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2791 !MIPS_MALTA && !MIPS_SEAD3 && \
2793 default MIPS_CMDLINE_FROM_BOOTLOADER
2795 config MIPS_CMDLINE_FROM_DTB
2797 bool "Dtb kernel arguments if available"
2799 config MIPS_CMDLINE_DTB_EXTEND
2801 bool "Extend dtb kernel arguments with bootloader arguments"
2803 config MIPS_CMDLINE_FROM_BOOTLOADER
2804 bool "Bootloader kernel arguments if available"
2809 config LOCKDEP_SUPPORT
2813 config STACKTRACE_SUPPORT
2817 config HAVE_LATENCYTOP_SUPPORT
2821 config PGTABLE_LEVELS
2823 default 3 if 64BIT && !PAGE_SIZE_64KB
2826 source "init/Kconfig"
2828 source "kernel/Kconfig.freezer"
2830 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2838 bool "Support for PCI controller"
2839 depends on HW_HAS_PCI
2841 select NO_GENERIC_PCI_IOPORT_MAP
2843 Find out whether you have a PCI motherboard. PCI is the name of a
2844 bus system, i.e. the way the CPU talks to the other stuff inside
2845 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2849 bool "Support for HT-linked PCI"
2851 depends on CPU_LOONGSON3
2855 Loongson family machines use Hyper-Transport bus for inter-core
2856 connection and device connection. The PCI bus is a subordinate
2857 linked at HT. Choose Y for Loongson-3 based machines.
2862 source "drivers/pci/Kconfig"
2864 source "drivers/pci/pcie/Kconfig"
2867 # ISA support is now enabled via select. Too many systems still have the one
2868 # or other ISA chip on the board that users don't know about so don't expect
2869 # users to choose the right thing ...
2876 depends on HW_HAS_EISA
2878 select GENERIC_ISA_DMA
2880 The Extended Industry Standard Architecture (EISA) bus was
2881 developed as an open alternative to the IBM MicroChannel bus.
2883 The EISA bus provided some of the features of the IBM MicroChannel
2884 bus while maintaining backward compatibility with cards made for
2885 the older ISA bus. The EISA bus saw limited use between 1988 and
2886 1995 when it was made obsolete by the PCI bus.
2888 Say Y here if you are building a kernel for an EISA-based machine.
2892 source "drivers/eisa/Kconfig"
2895 bool "TURBOchannel support"
2896 depends on MACH_DECSTATION
2898 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2899 processors. TURBOchannel programming specifications are available
2901 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2903 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2904 Linux driver support status is documented at:
2905 <http://www.linux-mips.org/wiki/DECstation>
2915 select MIPS_EXTERNAL_TIMER
2923 source "drivers/pcmcia/Kconfig"
2925 source "drivers/pci/hotplug/Kconfig"
2928 tristate "RapidIO support"
2932 If you say Y here, the kernel will include drivers and
2933 infrastructure code to support RapidIO interconnect devices.
2935 source "drivers/rapidio/Kconfig"
2939 menu "Executable file formats"
2941 source "fs/Kconfig.binfmt"
2946 config MIPS32_COMPAT
2952 config SYSVIPC_COMPAT
2956 bool "Kernel support for o32 binaries"
2958 select ARCH_WANT_OLD_COMPAT_IPC
2960 select MIPS32_COMPAT
2961 select SYSVIPC_COMPAT if SYSVIPC
2963 Select this option if you want to run o32 binaries. These are pure
2964 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2965 existing binaries are in this format.
2970 bool "Kernel support for n32 binaries"
2973 select MIPS32_COMPAT
2974 select SYSVIPC_COMPAT if SYSVIPC
2976 Select this option if you want to run n32 binaries. These are
2977 64-bit binaries using 32-bit quantities for addressing and certain
2978 data that would normally be 64-bit. They are used in special
2985 default y if MIPS32_O32 || MIPS32_N32
2989 menu "Power management options"
2991 config ARCH_HIBERNATION_POSSIBLE
2993 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2995 config ARCH_SUSPEND_POSSIBLE
2997 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2999 source "kernel/power/Kconfig"
3003 config MIPS_EXTERNAL_TIMER
3006 menu "CPU Power Management"
3008 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3009 source "drivers/cpufreq/Kconfig"
3012 source "drivers/cpuidle/Kconfig"
3016 source "net/Kconfig"
3018 source "drivers/Kconfig"
3020 source "drivers/firmware/Kconfig"
3024 source "arch/mips/Kconfig.debug"
3026 source "security/Kconfig"
3028 source "crypto/Kconfig"
3030 source "lib/Kconfig"
3032 source "arch/mips/kvm/Kconfig"