4 select ARCH_MIGHT_HAVE_PC_PARPORT
5 select HAVE_CONTEXT_TRACKING
6 select HAVE_GENERIC_DMA_COHERENT
9 select HAVE_PERF_EVENTS
10 select PERF_USE_VMALLOC
12 select HAVE_ARCH_TRACEHOOK
13 select ARCH_HAVE_CUSTOM_GPIO_H
14 select HAVE_FUNCTION_TRACER
15 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
16 select HAVE_DYNAMIC_FTRACE
17 select HAVE_FTRACE_MCOUNT_RECORD
18 select HAVE_C_RECORDMCOUNT
19 select HAVE_FUNCTION_GRAPH_TRACER
21 select HAVE_KRETPROBES
22 select HAVE_DEBUG_KMEMLEAK
23 select HAVE_SYSCALL_TRACEPOINTS
24 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
25 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
26 select RTC_LIB if !MACH_LOONGSON
27 select GENERIC_ATOMIC64 if !64BIT
28 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
30 select HAVE_DMA_API_DEBUG
31 select GENERIC_IRQ_PROBE
32 select GENERIC_IRQ_SHOW
33 select GENERIC_PCI_IOMAP
34 select HAVE_ARCH_JUMP_LABEL
35 select ARCH_WANT_IPC_PARSE_VERSION
36 select IRQ_FORCED_THREADING
38 select HAVE_MEMBLOCK_NODE_MAP
39 select ARCH_DISCARD_MEMBLOCK
40 select GENERIC_SMP_IDLE_THREAD
41 select BUILDTIME_EXTABLE_SORT
42 select GENERIC_CLOCKEVENTS
43 select GENERIC_CMOS_UPDATE
44 select HAVE_MOD_ARCH_SPECIFIC
46 select MODULES_USE_ELF_REL if MODULES
47 select MODULES_USE_ELF_RELA if MODULES && 64BIT
48 select CLONE_BACKWARDS
49 select HAVE_DEBUG_STACKOVERFLOW
50 select HAVE_CC_STACKPROTECTOR
52 menu "Machine selection"
59 bool "Alchemy processor based machines"
60 select 64BIT_PHYS_ADDR
64 select SYS_HAS_CPU_MIPS32_R1
65 select SYS_SUPPORTS_32BIT_KERNEL
66 select SYS_SUPPORTS_APM_EMULATION
67 select ARCH_REQUIRE_GPIOLIB
68 select SYS_SUPPORTS_ZBOOT
69 select USB_ARCH_HAS_OHCI
70 select USB_ARCH_HAS_EHCI
73 bool "Texas Instruments AR7"
75 select DMA_NONCOHERENT
81 select SYS_HAS_CPU_MIPS32_R1
82 select SYS_HAS_EARLY_PRINTK
83 select SYS_SUPPORTS_32BIT_KERNEL
84 select SYS_SUPPORTS_LITTLE_ENDIAN
85 select SYS_SUPPORTS_ZBOOT_UART16550
86 select ARCH_REQUIRE_GPIOLIB
90 Support for the Texas Instruments AR7 System-on-a-Chip
91 family: TNETD7100, 7200 and 7300.
94 bool "Atheros AR71XX/AR724X/AR913X based boards"
95 select ARCH_REQUIRE_GPIOLIB
99 select DMA_NONCOHERENT
104 select SYS_HAS_CPU_MIPS32_R2
105 select SYS_HAS_EARLY_PRINTK
106 select SYS_SUPPORTS_32BIT_KERNEL
107 select SYS_SUPPORTS_BIG_ENDIAN
109 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
112 bool "Broadcom BCM47XX based boards"
113 select ARCH_WANT_OPTIONAL_GPIOLIB
117 select DMA_NONCOHERENT
121 select SYS_HAS_CPU_MIPS32_R1
122 select NO_EXCEPT_FILL
123 select SYS_SUPPORTS_32BIT_KERNEL
124 select SYS_SUPPORTS_LITTLE_ENDIAN
125 select SYS_HAS_EARLY_PRINTK
127 Support for BCM47XX based boards
130 bool "Broadcom BCM63XX based boards"
134 select DMA_NONCOHERENT
136 select SYS_HAS_CPU_MIPS32_R1
137 select SYS_HAS_CPU_BMIPS4350 if !BCM63XX_CPU_6338 && !BCM63XX_CPU_6345 && !BCM63XX_CPU_6348
138 select SYS_SUPPORTS_32BIT_KERNEL
139 select SYS_SUPPORTS_BIG_ENDIAN
140 select SYS_HAS_EARLY_PRINTK
142 select ARCH_REQUIRE_GPIOLIB
145 Support for BCM63XX based boards
152 select DMA_NONCOHERENT
153 select EARLY_PRINTK_8250 if EARLY_PRINTK
159 select PCI_GT64XXX_PCI0
161 select SYS_HAS_CPU_NEVADA
162 select SYS_HAS_EARLY_PRINTK
163 select SYS_SUPPORTS_32BIT_KERNEL
164 select SYS_SUPPORTS_64BIT_KERNEL
165 select SYS_SUPPORTS_LITTLE_ENDIAN
167 config MACH_DECSTATION
174 select CPU_DADDI_WORKAROUNDS if 64BIT
175 select CPU_R4000_WORKAROUNDS if 64BIT
176 select CPU_R4400_WORKAROUNDS if 64BIT
177 select DMA_NONCOHERENT
180 select SYS_HAS_CPU_R3000
181 select SYS_HAS_CPU_R4X00
182 select SYS_SUPPORTS_32BIT_KERNEL
183 select SYS_SUPPORTS_64BIT_KERNEL
184 select SYS_SUPPORTS_LITTLE_ENDIAN
185 select SYS_SUPPORTS_128HZ
186 select SYS_SUPPORTS_256HZ
187 select SYS_SUPPORTS_1024HZ
189 This enables support for DEC's MIPS based workstations. For details
190 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
191 DECstation porting pages on <http://decstation.unix-ag.org/>.
193 If you have one of the following DECstation Models you definitely
194 want to choose R4xx0 for the CPU Type:
201 otherwise choose R3000.
204 bool "Jazz family of machines"
207 select ARCH_MAY_HAVE_PC_FDC
210 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
211 select GENERIC_ISA_DMA
212 select HAVE_PCSPKR_PLATFORM
217 select SYS_HAS_CPU_R4X00
218 select SYS_SUPPORTS_32BIT_KERNEL
219 select SYS_SUPPORTS_64BIT_KERNEL
220 select SYS_SUPPORTS_100HZ
222 This a family of machines based on the MIPS R4030 chipset which was
223 used by several vendors to build RISC/os and Windows NT workstations.
224 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
225 Olivetti M700-10 workstations.
228 bool "Ingenic JZ4740 based machines"
229 select SYS_HAS_CPU_MIPS32_R1
230 select SYS_SUPPORTS_32BIT_KERNEL
231 select SYS_SUPPORTS_LITTLE_ENDIAN
232 select SYS_SUPPORTS_ZBOOT_UART16550
233 select DMA_NONCOHERENT
235 select ARCH_REQUIRE_GPIOLIB
236 select SYS_HAS_EARLY_PRINTK
239 select GENERIC_IRQ_CHIP
242 bool "Lantiq based platforms"
243 select DMA_NONCOHERENT
247 select SYS_HAS_CPU_MIPS32_R1
248 select SYS_HAS_CPU_MIPS32_R2
249 select SYS_SUPPORTS_BIG_ENDIAN
250 select SYS_SUPPORTS_32BIT_KERNEL
251 select SYS_SUPPORTS_MULTITHREADING
252 select SYS_HAS_EARLY_PRINTK
253 select ARCH_REQUIRE_GPIOLIB
256 select HAVE_MACH_CLKDEV
260 select PINCTRL_LANTIQ
263 bool "LASAT Networks platforms"
266 select DMA_NONCOHERENT
267 select SYS_HAS_EARLY_PRINTK
270 select PCI_GT64XXX_PCI0
272 select R5000_CPU_SCACHE
273 select SYS_HAS_CPU_R5000
274 select SYS_SUPPORTS_32BIT_KERNEL
275 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
276 select SYS_SUPPORTS_LITTLE_ENDIAN
279 bool "Loongson family of machines"
280 select SYS_SUPPORTS_ZBOOT
282 This enables the support of Loongson family of machines.
284 Loongson is a family of general-purpose MIPS-compatible CPUs.
285 developed at Institute of Computing Technology (ICT),
286 Chinese Academy of Sciences (CAS) in the People's Republic
287 of China. The chief architect is Professor Weiwu Hu.
289 config MACH_LOONGSON1
290 bool "Loongson 1 family of machines"
291 select SYS_SUPPORTS_ZBOOT
293 This enables support for the Loongson 1 based machines.
295 Loongson 1 is a family of 32-bit MIPS-compatible SoCs developed by
296 the ICT (Institute of Computing Technology) and the Chinese Academy
300 bool "MIPS Malta board"
301 select ARCH_MAY_HAVE_PC_FDC
307 select DMA_NONCOHERENT
308 select GENERIC_ISA_DMA
309 select HAVE_PCSPKR_PLATFORM
316 select MIPS_CPU_SCACHE
317 select PCI_GT64XXX_PCI0
320 select SYS_HAS_CPU_MIPS32_R1
321 select SYS_HAS_CPU_MIPS32_R2
322 select SYS_HAS_CPU_MIPS64_R1
323 select SYS_HAS_CPU_MIPS64_R2
324 select SYS_HAS_CPU_NEVADA
325 select SYS_HAS_CPU_RM7000
326 select SYS_HAS_EARLY_PRINTK
327 select SYS_SUPPORTS_32BIT_KERNEL
328 select SYS_SUPPORTS_64BIT_KERNEL
329 select SYS_SUPPORTS_BIG_ENDIAN
330 select SYS_SUPPORTS_LITTLE_ENDIAN
331 select SYS_SUPPORTS_MIPS_CMP
332 select SYS_SUPPORTS_MULTITHREADING
333 select SYS_SUPPORTS_SMARTMIPS
334 select SYS_SUPPORTS_ZBOOT
336 This enables support for the MIPS Technologies Malta evaluation
340 bool "MIPS SEAD3 board"
346 select CPU_MIPSR2_IRQ_VI
347 select CPU_MIPSR2_IRQ_EI
348 select DMA_NONCOHERENT
352 select SYS_HAS_CPU_MIPS32_R1
353 select SYS_HAS_CPU_MIPS32_R2
354 select SYS_HAS_CPU_MIPS64_R1
355 select SYS_HAS_EARLY_PRINTK
356 select SYS_SUPPORTS_32BIT_KERNEL
357 select SYS_SUPPORTS_64BIT_KERNEL
358 select SYS_SUPPORTS_BIG_ENDIAN
359 select SYS_SUPPORTS_LITTLE_ENDIAN
360 select SYS_SUPPORTS_SMARTMIPS
361 select SYS_SUPPORTS_MICROMIPS
362 select USB_ARCH_HAS_EHCI
363 select USB_EHCI_BIG_ENDIAN_DESC
364 select USB_EHCI_BIG_ENDIAN_MMIO
367 This enables support for the MIPS Technologies SEAD3 evaluation
371 bool "NEC EMMA2RH Mark-eins board"
375 This enables support for the NEC Electronics Mark-eins boards.
378 bool "NEC VR4100 series based machines"
381 select SYS_HAS_CPU_VR41XX
382 select ARCH_REQUIRE_GPIOLIB
385 bool "NXP STB220 board"
388 Support for NXP Semiconductors STB220 Development Board.
395 Support for NXP Semiconductors STB225 Development Board.
398 bool "PMC-Sierra MSP chipsets"
401 select DMA_NONCOHERENT
403 select NO_EXCEPT_FILL
405 select SYS_HAS_CPU_MIPS32_R1
406 select SYS_HAS_CPU_MIPS32_R2
407 select SYS_SUPPORTS_32BIT_KERNEL
408 select SYS_SUPPORTS_BIG_ENDIAN
411 select SERIAL_8250_CONSOLE
412 select USB_EHCI_BIG_ENDIAN_MMIO
413 select USB_EHCI_BIG_ENDIAN_DESC
415 This adds support for the PMC-Sierra family of Multi-Service
416 Processor System-On-A-Chips. These parts include a number
417 of integrated peripherals, interfaces and DSPs in addition to
418 a variety of MIPS cores.
421 bool "Ralink based machines"
425 select DMA_NONCOHERENT
428 select SYS_HAS_CPU_MIPS32_R1
429 select SYS_HAS_CPU_MIPS32_R2
430 select SYS_SUPPORTS_32BIT_KERNEL
431 select SYS_SUPPORTS_LITTLE_ENDIAN
432 select SYS_HAS_EARLY_PRINTK
433 select HAVE_MACH_CLKDEV
435 select ARCH_HAS_RESET_CONTROLLER
436 select RESET_CONTROLLER
439 bool "SGI IP22 (Indy/Indigo2)"
445 select DEFAULT_SGI_PARTITION
446 select DMA_NONCOHERENT
450 select IP22_CPU_SCACHE
452 select GENERIC_ISA_DMA_SUPPORT_BROKEN
454 select SGI_HAS_INDYDOG
460 select SYS_HAS_CPU_R4X00
461 select SYS_HAS_CPU_R5000
463 # Disable EARLY_PRINTK for now since it leads to overwritten prom
464 # memory during early boot on some machines.
466 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
467 # for a more details discussion
469 # select SYS_HAS_EARLY_PRINTK
470 select SYS_SUPPORTS_32BIT_KERNEL
471 select SYS_SUPPORTS_64BIT_KERNEL
472 select SYS_SUPPORTS_BIG_ENDIAN
474 This are the SGI Indy, Challenge S and Indigo2, as well as certain
475 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
476 that runs on these, say Y here.
479 bool "SGI IP27 (Origin200/2000)"
483 select DEFAULT_SGI_PARTITION
485 select SYS_HAS_EARLY_PRINTK
487 select NR_CPUS_DEFAULT_64
488 select SYS_HAS_CPU_R10000
489 select SYS_SUPPORTS_64BIT_KERNEL
490 select SYS_SUPPORTS_BIG_ENDIAN
491 select SYS_SUPPORTS_NUMA
492 select SYS_SUPPORTS_SMP
494 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
495 workstations. To compile a Linux kernel that runs on these, say Y
499 bool "SGI IP28 (Indigo2 R10k)"
505 select DEFAULT_SGI_PARTITION
506 select DMA_NONCOHERENT
507 select GENERIC_ISA_DMA_SUPPORT_BROKEN
513 select SGI_HAS_INDYDOG
519 select SYS_HAS_CPU_R10000
521 # Disable EARLY_PRINTK for now since it leads to overwritten prom
522 # memory during early boot on some machines.
524 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
525 # for a more details discussion
527 # select SYS_HAS_EARLY_PRINTK
528 select SYS_SUPPORTS_64BIT_KERNEL
529 select SYS_SUPPORTS_BIG_ENDIAN
531 This is the SGI Indigo2 with R10000 processor. To compile a Linux
532 kernel that runs on these, say Y here.
541 select DMA_NONCOHERENT
544 select R5000_CPU_SCACHE
545 select RM7000_CPU_SCACHE
546 select SYS_HAS_CPU_R5000
547 select SYS_HAS_CPU_R10000 if BROKEN
548 select SYS_HAS_CPU_RM7000
549 select SYS_HAS_CPU_NEVADA
550 select SYS_SUPPORTS_64BIT_KERNEL
551 select SYS_SUPPORTS_BIG_ENDIAN
553 If you want this kernel to run on SGI O2 workstation, say Y here.
556 bool "Sibyte BCM91120C-CRhine"
559 select SIBYTE_BCM1120
561 select SYS_HAS_CPU_SB1
562 select SYS_SUPPORTS_BIG_ENDIAN
563 select SYS_SUPPORTS_LITTLE_ENDIAN
566 bool "Sibyte BCM91120x-Carmel"
569 select SIBYTE_BCM1120
571 select SYS_HAS_CPU_SB1
572 select SYS_SUPPORTS_BIG_ENDIAN
573 select SYS_SUPPORTS_LITTLE_ENDIAN
576 bool "Sibyte BCM91125C-CRhone"
579 select SIBYTE_BCM1125
581 select SYS_HAS_CPU_SB1
582 select SYS_SUPPORTS_BIG_ENDIAN
583 select SYS_SUPPORTS_HIGHMEM
584 select SYS_SUPPORTS_LITTLE_ENDIAN
587 bool "Sibyte BCM91125E-Rhone"
590 select SIBYTE_BCM1125H
592 select SYS_HAS_CPU_SB1
593 select SYS_SUPPORTS_BIG_ENDIAN
594 select SYS_SUPPORTS_LITTLE_ENDIAN
597 bool "Sibyte BCM91250A-SWARM"
600 select HAVE_PATA_PLATFORM
603 select SYS_HAS_CPU_SB1
604 select SYS_SUPPORTS_BIG_ENDIAN
605 select SYS_SUPPORTS_HIGHMEM
606 select SYS_SUPPORTS_LITTLE_ENDIAN
607 select ZONE_DMA32 if 64BIT
609 config SIBYTE_LITTLESUR
610 bool "Sibyte BCM91250C2-LittleSur"
613 select HAVE_PATA_PLATFORM
616 select SYS_HAS_CPU_SB1
617 select SYS_SUPPORTS_BIG_ENDIAN
618 select SYS_SUPPORTS_HIGHMEM
619 select SYS_SUPPORTS_LITTLE_ENDIAN
621 config SIBYTE_SENTOSA
622 bool "Sibyte BCM91250E-Sentosa"
627 select SYS_HAS_CPU_SB1
628 select SYS_SUPPORTS_BIG_ENDIAN
629 select SYS_SUPPORTS_LITTLE_ENDIAN
632 bool "Sibyte BCM91480B-BigSur"
635 select NR_CPUS_DEFAULT_4
636 select SIBYTE_BCM1x80
638 select SYS_HAS_CPU_SB1
639 select SYS_SUPPORTS_BIG_ENDIAN
640 select SYS_SUPPORTS_HIGHMEM
641 select SYS_SUPPORTS_LITTLE_ENDIAN
642 select ZONE_DMA32 if 64BIT
645 bool "SNI RM200/300/400"
646 select FW_ARC if CPU_LITTLE_ENDIAN
647 select FW_ARC32 if CPU_LITTLE_ENDIAN
648 select FW_SNIPROM if CPU_BIG_ENDIAN
649 select ARCH_MAY_HAVE_PC_FDC
653 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
654 select DMA_NONCOHERENT
655 select GENERIC_ISA_DMA
656 select HAVE_PCSPKR_PLATFORM
663 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
664 select SYS_HAS_CPU_R4X00
665 select SYS_HAS_CPU_R5000
666 select SYS_HAS_CPU_R10000
667 select R5000_CPU_SCACHE
668 select SYS_HAS_EARLY_PRINTK
669 select SYS_SUPPORTS_32BIT_KERNEL
670 select SYS_SUPPORTS_64BIT_KERNEL
671 select SYS_SUPPORTS_BIG_ENDIAN
672 select SYS_SUPPORTS_HIGHMEM
673 select SYS_SUPPORTS_LITTLE_ENDIAN
675 The SNI RM200/300/400 are MIPS-based machines manufactured by
676 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
677 Technology and now in turn merged with Fujitsu. Say Y here to
678 support this machine type.
681 bool "Toshiba TX39 series based machines"
684 bool "Toshiba TX49 series based machines"
686 config MIKROTIK_RB532
687 bool "Mikrotik RB532 boards"
690 select DMA_NONCOHERENT
693 select SYS_HAS_CPU_MIPS32_R1
694 select SYS_SUPPORTS_32BIT_KERNEL
695 select SYS_SUPPORTS_LITTLE_ENDIAN
698 select ARCH_REQUIRE_GPIOLIB
700 Support the Mikrotik(tm) RouterBoard 532 series,
701 based on the IDT RC32434 SoC.
703 config CAVIUM_OCTEON_SOC
704 bool "Cavium Networks Octeon SoC based boards"
706 select 64BIT_PHYS_ADDR
708 select SYS_SUPPORTS_64BIT_KERNEL
709 select SYS_SUPPORTS_BIG_ENDIAN
711 select SYS_SUPPORTS_HOTPLUG_CPU
712 select SYS_HAS_EARLY_PRINTK
713 select SYS_HAS_CPU_CAVIUM_OCTEON
717 select USB_ARCH_HAS_OHCI
718 select USB_ARCH_HAS_EHCI
720 select ARCH_REQUIRE_GPIOLIB
722 This option supports all of the Octeon reference boards from Cavium
723 Networks. It builds a kernel that dynamically determines the Octeon
724 CPU type and supports all known board reference implementations.
725 Some of the supported boards are:
732 Say Y here for most Octeon reference boards.
735 bool "Netlogic XLR/XLS based systems"
738 select SYS_HAS_CPU_XLR
739 select SYS_SUPPORTS_SMP
742 select SYS_SUPPORTS_32BIT_KERNEL
743 select SYS_SUPPORTS_64BIT_KERNEL
744 select 64BIT_PHYS_ADDR
745 select SYS_SUPPORTS_BIG_ENDIAN
746 select SYS_SUPPORTS_HIGHMEM
748 select NR_CPUS_DEFAULT_32
752 select ZONE_DMA32 if 64BIT
754 select SYS_HAS_EARLY_PRINTK
755 select USB_ARCH_HAS_OHCI if USB_SUPPORT
756 select USB_ARCH_HAS_EHCI if USB_SUPPORT
757 select SYS_SUPPORTS_ZBOOT
758 select SYS_SUPPORTS_ZBOOT_UART16550
760 Support for systems based on Netlogic XLR and XLS processors.
761 Say Y here if you have a XLR or XLS based board.
764 bool "Netlogic XLP based systems"
767 select SYS_HAS_CPU_XLP
768 select SYS_SUPPORTS_SMP
770 select SYS_SUPPORTS_32BIT_KERNEL
771 select SYS_SUPPORTS_64BIT_KERNEL
772 select 64BIT_PHYS_ADDR
773 select SYS_SUPPORTS_BIG_ENDIAN
774 select SYS_SUPPORTS_LITTLE_ENDIAN
775 select SYS_SUPPORTS_HIGHMEM
777 select NR_CPUS_DEFAULT_32
781 select ZONE_DMA32 if 64BIT
783 select SYS_HAS_EARLY_PRINTK
785 select SYS_SUPPORTS_ZBOOT
786 select SYS_SUPPORTS_ZBOOT_UART16550
788 This board is based on Netlogic XLP Processor.
789 Say Y here if you have a XLP based board.
793 source "arch/mips/alchemy/Kconfig"
794 source "arch/mips/ath79/Kconfig"
795 source "arch/mips/bcm47xx/Kconfig"
796 source "arch/mips/bcm63xx/Kconfig"
797 source "arch/mips/jazz/Kconfig"
798 source "arch/mips/jz4740/Kconfig"
799 source "arch/mips/lantiq/Kconfig"
800 source "arch/mips/lasat/Kconfig"
801 source "arch/mips/pmcs-msp71xx/Kconfig"
802 source "arch/mips/ralink/Kconfig"
803 source "arch/mips/sgi-ip27/Kconfig"
804 source "arch/mips/sibyte/Kconfig"
805 source "arch/mips/txx9/Kconfig"
806 source "arch/mips/vr41xx/Kconfig"
807 source "arch/mips/cavium-octeon/Kconfig"
808 source "arch/mips/loongson/Kconfig"
809 source "arch/mips/loongson1/Kconfig"
810 source "arch/mips/netlogic/Kconfig"
814 config RWSEM_GENERIC_SPINLOCK
818 config RWSEM_XCHGADD_ALGORITHM
821 config ARCH_HAS_ILOG2_U32
825 config ARCH_HAS_ILOG2_U64
829 config GENERIC_HWEIGHT
833 config GENERIC_CALIBRATE_DELAY
837 config SCHED_OMIT_FRAME_POINTER
842 # Select some configuration options automatically based on user selections.
847 config ARCH_MAY_HAVE_PC_FDC
890 select ARCH_REQUIRE_GPIOLIB
896 config ARCH_DMA_ADDR_T_64BIT
897 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
902 config DMA_NONCOHERENT
904 select NEED_DMA_MAP_STATE
906 config NEED_DMA_MAP_STATE
909 config SYS_HAS_EARLY_PRINTK
913 bool "Support for hot-pluggable CPUs"
914 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
916 Say Y here to allow turning CPUs off and on. CPUs can be
917 controlled through /sys/devices/system/cpu.
918 (Note: power management support will enable this option
919 automatically on SMP systems. )
920 Say N if you want to disable CPU hotplug.
922 config SYS_SUPPORTS_HOTPLUG_CPU
946 config GENERIC_ISA_DMA
948 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
951 config GENERIC_ISA_DMA_SUPPORT_BROKEN
953 select GENERIC_ISA_DMA
962 # Endianness selection. Sufficiently obscure so many users don't know what to
963 # answer,so we try hard to limit the available choices. Also the use of a
964 # choice statement should be more obvious to the user.
967 prompt "Endianness selection"
969 Some MIPS machines can be configured for either little or big endian
970 byte order. These modes require different kernels and a different
971 Linux distribution. In general there is one preferred byteorder for a
972 particular system but some systems are just as commonly used in the
973 one or the other endianness.
975 config CPU_BIG_ENDIAN
977 depends on SYS_SUPPORTS_BIG_ENDIAN
979 config CPU_LITTLE_ENDIAN
981 depends on SYS_SUPPORTS_LITTLE_ENDIAN
988 config SYS_SUPPORTS_APM_EMULATION
991 config SYS_SUPPORTS_BIG_ENDIAN
994 config SYS_SUPPORTS_LITTLE_ENDIAN
997 config SYS_SUPPORTS_HUGETLBFS
999 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1002 config MIPS_HUGE_TLB_SUPPORT
1003 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1026 config PCI_GT64XXX_PCI0
1029 config NO_EXCEPT_FILL
1036 select DMA_NONCOHERENT
1038 select SWAP_IO_SPACE
1039 select SYS_HAS_CPU_R5500
1040 select SYS_SUPPORTS_32BIT_KERNEL
1041 select SYS_SUPPORTS_64BIT_KERNEL
1042 select SYS_SUPPORTS_BIG_ENDIAN
1049 select DMA_NONCOHERENT
1050 select SYS_HAS_CPU_MIPS32_R2
1051 select SYS_SUPPORTS_32BIT_KERNEL
1052 select SYS_SUPPORTS_LITTLE_ENDIAN
1053 select SYS_SUPPORTS_BIG_ENDIAN
1054 select CPU_MIPSR2_IRQ_VI
1060 config SWAP_IO_SPACE
1063 config SGI_HAS_INDYDOG
1075 config SGI_HAS_ZILOG
1078 config SGI_HAS_I8042
1081 config DEFAULT_SGI_PARTITION
1093 config MIPS_L1_CACHE_SHIFT
1095 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL || SOC_RT288X
1096 default "6" if MIPS_CPU_SCACHE
1097 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1100 config HAVE_STD_PC_SERIAL_PORT
1104 bool "ARC console support"
1105 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1109 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1114 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1123 menu "CPU selection"
1129 config CPU_LOONGSON2E
1131 depends on SYS_HAS_CPU_LOONGSON2E
1132 select CPU_LOONGSON2
1134 The Loongson 2E processor implements the MIPS III instruction set
1135 with many extensions.
1137 It has an internal FPGA northbridge, which is compatible to
1140 config CPU_LOONGSON2F
1142 depends on SYS_HAS_CPU_LOONGSON2F
1143 select CPU_LOONGSON2
1144 select ARCH_REQUIRE_GPIOLIB
1146 The Loongson 2F processor implements the MIPS III instruction set
1147 with many extensions.
1149 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1150 have a similar programming interface with FPGA northbridge used in
1153 config CPU_LOONGSON1B
1155 depends on SYS_HAS_CPU_LOONGSON1B
1156 select CPU_LOONGSON1
1158 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1159 release 2 instruction set.
1161 config CPU_MIPS32_R1
1162 bool "MIPS32 Release 1"
1163 depends on SYS_HAS_CPU_MIPS32_R1
1164 select CPU_HAS_PREFETCH
1165 select CPU_SUPPORTS_32BIT_KERNEL
1166 select CPU_SUPPORTS_HIGHMEM
1168 Choose this option to build a kernel for release 1 or later of the
1169 MIPS32 architecture. Most modern embedded systems with a 32-bit
1170 MIPS processor are based on a MIPS32 processor. If you know the
1171 specific type of processor in your system, choose those that one
1172 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1173 Release 2 of the MIPS32 architecture is available since several
1174 years so chances are you even have a MIPS32 Release 2 processor
1175 in which case you should choose CPU_MIPS32_R2 instead for better
1178 config CPU_MIPS32_R2
1179 bool "MIPS32 Release 2"
1180 depends on SYS_HAS_CPU_MIPS32_R2
1181 select CPU_HAS_PREFETCH
1182 select CPU_SUPPORTS_32BIT_KERNEL
1183 select CPU_SUPPORTS_HIGHMEM
1186 Choose this option to build a kernel for release 2 or later of the
1187 MIPS32 architecture. Most modern embedded systems with a 32-bit
1188 MIPS processor are based on a MIPS32 processor. If you know the
1189 specific type of processor in your system, choose those that one
1190 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1192 config CPU_MIPS64_R1
1193 bool "MIPS64 Release 1"
1194 depends on SYS_HAS_CPU_MIPS64_R1
1195 select CPU_HAS_PREFETCH
1196 select CPU_SUPPORTS_32BIT_KERNEL
1197 select CPU_SUPPORTS_64BIT_KERNEL
1198 select CPU_SUPPORTS_HIGHMEM
1199 select CPU_SUPPORTS_HUGEPAGES
1201 Choose this option to build a kernel for release 1 or later of the
1202 MIPS64 architecture. Many modern embedded systems with a 64-bit
1203 MIPS processor are based on a MIPS64 processor. If you know the
1204 specific type of processor in your system, choose those that one
1205 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1206 Release 2 of the MIPS64 architecture is available since several
1207 years so chances are you even have a MIPS64 Release 2 processor
1208 in which case you should choose CPU_MIPS64_R2 instead for better
1211 config CPU_MIPS64_R2
1212 bool "MIPS64 Release 2"
1213 depends on SYS_HAS_CPU_MIPS64_R2
1214 select CPU_HAS_PREFETCH
1215 select CPU_SUPPORTS_32BIT_KERNEL
1216 select CPU_SUPPORTS_64BIT_KERNEL
1217 select CPU_SUPPORTS_HIGHMEM
1218 select CPU_SUPPORTS_HUGEPAGES
1220 Choose this option to build a kernel for release 2 or later of the
1221 MIPS64 architecture. Many modern embedded systems with a 64-bit
1222 MIPS processor are based on a MIPS64 processor. If you know the
1223 specific type of processor in your system, choose those that one
1224 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1228 depends on SYS_HAS_CPU_R3000
1230 select CPU_SUPPORTS_32BIT_KERNEL
1231 select CPU_SUPPORTS_HIGHMEM
1233 Please make sure to pick the right CPU type. Linux/MIPS is not
1234 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1235 *not* work on R4000 machines and vice versa. However, since most
1236 of the supported machines have an R4000 (or similar) CPU, R4x00
1237 might be a safe bet. If the resulting kernel does not work,
1238 try to recompile with R3000.
1242 depends on SYS_HAS_CPU_TX39XX
1243 select CPU_SUPPORTS_32BIT_KERNEL
1247 depends on SYS_HAS_CPU_VR41XX
1248 select CPU_SUPPORTS_32BIT_KERNEL
1249 select CPU_SUPPORTS_64BIT_KERNEL
1251 The options selects support for the NEC VR4100 series of processors.
1252 Only choose this option if you have one of these processors as a
1253 kernel built with this option will not run on any other type of
1254 processor or vice versa.
1258 depends on SYS_HAS_CPU_R4300
1259 select CPU_SUPPORTS_32BIT_KERNEL
1260 select CPU_SUPPORTS_64BIT_KERNEL
1262 MIPS Technologies R4300-series processors.
1266 depends on SYS_HAS_CPU_R4X00
1267 select CPU_SUPPORTS_32BIT_KERNEL
1268 select CPU_SUPPORTS_64BIT_KERNEL
1269 select CPU_SUPPORTS_HUGEPAGES
1271 MIPS Technologies R4000-series processors other than 4300, including
1272 the R4000, R4400, R4600, and 4700.
1276 depends on SYS_HAS_CPU_TX49XX
1277 select CPU_HAS_PREFETCH
1278 select CPU_SUPPORTS_32BIT_KERNEL
1279 select CPU_SUPPORTS_64BIT_KERNEL
1280 select CPU_SUPPORTS_HUGEPAGES
1284 depends on SYS_HAS_CPU_R5000
1285 select CPU_SUPPORTS_32BIT_KERNEL
1286 select CPU_SUPPORTS_64BIT_KERNEL
1287 select CPU_SUPPORTS_HUGEPAGES
1289 MIPS Technologies R5000-series processors other than the Nevada.
1293 depends on SYS_HAS_CPU_R5432
1294 select CPU_SUPPORTS_32BIT_KERNEL
1295 select CPU_SUPPORTS_64BIT_KERNEL
1296 select CPU_SUPPORTS_HUGEPAGES
1300 depends on SYS_HAS_CPU_R5500
1301 select CPU_SUPPORTS_32BIT_KERNEL
1302 select CPU_SUPPORTS_64BIT_KERNEL
1303 select CPU_SUPPORTS_HUGEPAGES
1305 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1310 depends on SYS_HAS_CPU_R6000
1311 select CPU_SUPPORTS_32BIT_KERNEL
1313 MIPS Technologies R6000 and R6000A series processors. Note these
1314 processors are extremely rare and the support for them is incomplete.
1318 depends on SYS_HAS_CPU_NEVADA
1319 select CPU_SUPPORTS_32BIT_KERNEL
1320 select CPU_SUPPORTS_64BIT_KERNEL
1321 select CPU_SUPPORTS_HUGEPAGES
1323 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1327 depends on SYS_HAS_CPU_R8000
1328 select CPU_HAS_PREFETCH
1329 select CPU_SUPPORTS_64BIT_KERNEL
1331 MIPS Technologies R8000 processors. Note these processors are
1332 uncommon and the support for them is incomplete.
1336 depends on SYS_HAS_CPU_R10000
1337 select CPU_HAS_PREFETCH
1338 select CPU_SUPPORTS_32BIT_KERNEL
1339 select CPU_SUPPORTS_64BIT_KERNEL
1340 select CPU_SUPPORTS_HIGHMEM
1341 select CPU_SUPPORTS_HUGEPAGES
1343 MIPS Technologies R10000-series processors.
1347 depends on SYS_HAS_CPU_RM7000
1348 select CPU_HAS_PREFETCH
1349 select CPU_SUPPORTS_32BIT_KERNEL
1350 select CPU_SUPPORTS_64BIT_KERNEL
1351 select CPU_SUPPORTS_HIGHMEM
1352 select CPU_SUPPORTS_HUGEPAGES
1356 depends on SYS_HAS_CPU_SB1
1357 select CPU_SUPPORTS_32BIT_KERNEL
1358 select CPU_SUPPORTS_64BIT_KERNEL
1359 select CPU_SUPPORTS_HIGHMEM
1360 select CPU_SUPPORTS_HUGEPAGES
1361 select WEAK_ORDERING
1363 config CPU_CAVIUM_OCTEON
1364 bool "Cavium Octeon processor"
1365 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1366 select ARCH_SPARSEMEM_ENABLE
1367 select CPU_HAS_PREFETCH
1368 select CPU_SUPPORTS_64BIT_KERNEL
1369 select SYS_SUPPORTS_SMP
1370 select NR_CPUS_DEFAULT_16
1371 select WEAK_ORDERING
1372 select CPU_SUPPORTS_HIGHMEM
1373 select CPU_SUPPORTS_HUGEPAGES
1376 select USB_EHCI_BIG_ENDIAN_MMIO
1378 The Cavium Octeon processor is a highly integrated chip containing
1379 many ethernet hardware widgets for networking tasks. The processor
1380 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1381 Full details can be found at http://www.caviumnetworks.com.
1383 config CPU_BMIPS3300
1385 depends on SYS_HAS_CPU_BMIPS3300
1388 Broadcom BMIPS3300 processors.
1390 config CPU_BMIPS4350
1392 depends on SYS_HAS_CPU_BMIPS4350
1394 select SYS_SUPPORTS_SMP
1395 select SYS_SUPPORTS_HOTPLUG_CPU
1397 Broadcom BMIPS4350 ("VIPER") processors.
1399 config CPU_BMIPS4380
1401 depends on SYS_HAS_CPU_BMIPS4380
1403 select SYS_SUPPORTS_SMP
1404 select SYS_SUPPORTS_HOTPLUG_CPU
1406 Broadcom BMIPS4380 processors.
1408 config CPU_BMIPS5000
1410 depends on SYS_HAS_CPU_BMIPS5000
1412 select CPU_SUPPORTS_HIGHMEM
1413 select MIPS_CPU_SCACHE
1414 select SYS_SUPPORTS_SMP
1415 select SYS_SUPPORTS_HOTPLUG_CPU
1417 Broadcom BMIPS5000 processors.
1420 bool "Netlogic XLR SoC"
1421 depends on SYS_HAS_CPU_XLR
1422 select CPU_SUPPORTS_32BIT_KERNEL
1423 select CPU_SUPPORTS_64BIT_KERNEL
1424 select CPU_SUPPORTS_HIGHMEM
1425 select CPU_SUPPORTS_HUGEPAGES
1426 select WEAK_ORDERING
1427 select WEAK_REORDERING_BEYOND_LLSC
1429 Netlogic Microsystems XLR/XLS processors.
1432 bool "Netlogic XLP SoC"
1433 depends on SYS_HAS_CPU_XLP
1434 select CPU_SUPPORTS_32BIT_KERNEL
1435 select CPU_SUPPORTS_64BIT_KERNEL
1436 select CPU_SUPPORTS_HIGHMEM
1437 select WEAK_ORDERING
1438 select WEAK_REORDERING_BEYOND_LLSC
1439 select CPU_HAS_PREFETCH
1442 Netlogic Microsystems XLP processors.
1446 config CPU_NOP_WORKAROUNDS
1449 config CPU_JUMP_WORKAROUNDS
1452 config CPU_LOONGSON2F_WORKAROUNDS
1453 bool "Loongson 2F Workarounds"
1455 select CPU_NOP_WORKAROUNDS
1456 select CPU_JUMP_WORKAROUNDS
1458 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1459 require workarounds. Without workarounds the system may hang
1460 unexpectedly. For more information please refer to the gas
1461 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1463 Loongson 2F03 and later have fixed these issues and no workarounds
1464 are needed. The workarounds have no significant side effect on them
1465 but may decrease the performance of the system so this option should
1466 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1469 If unsure, please say Y.
1470 endif # CPU_LOONGSON2F
1472 config SYS_SUPPORTS_ZBOOT
1474 select HAVE_KERNEL_GZIP
1475 select HAVE_KERNEL_BZIP2
1476 select HAVE_KERNEL_LZ4
1477 select HAVE_KERNEL_LZMA
1478 select HAVE_KERNEL_LZO
1479 select HAVE_KERNEL_XZ
1481 config SYS_SUPPORTS_ZBOOT_UART16550
1483 select SYS_SUPPORTS_ZBOOT
1485 config CPU_LOONGSON2
1487 select CPU_SUPPORTS_32BIT_KERNEL
1488 select CPU_SUPPORTS_64BIT_KERNEL
1489 select CPU_SUPPORTS_HIGHMEM
1490 select CPU_SUPPORTS_HUGEPAGES
1492 config CPU_LOONGSON1
1496 select CPU_HAS_PREFETCH
1497 select CPU_SUPPORTS_32BIT_KERNEL
1498 select CPU_SUPPORTS_HIGHMEM
1503 select CPU_SUPPORTS_32BIT_KERNEL
1504 select DMA_NONCOHERENT
1506 select SWAP_IO_SPACE
1507 select WEAK_ORDERING
1509 config SYS_HAS_CPU_LOONGSON2E
1512 config SYS_HAS_CPU_LOONGSON2F
1514 select CPU_SUPPORTS_CPUFREQ
1515 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1516 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1518 config SYS_HAS_CPU_LOONGSON1B
1521 config SYS_HAS_CPU_MIPS32_R1
1524 config SYS_HAS_CPU_MIPS32_R2
1527 config SYS_HAS_CPU_MIPS64_R1
1530 config SYS_HAS_CPU_MIPS64_R2
1533 config SYS_HAS_CPU_R3000
1536 config SYS_HAS_CPU_TX39XX
1539 config SYS_HAS_CPU_VR41XX
1542 config SYS_HAS_CPU_R4300
1545 config SYS_HAS_CPU_R4X00
1548 config SYS_HAS_CPU_TX49XX
1551 config SYS_HAS_CPU_R5000
1554 config SYS_HAS_CPU_R5432
1557 config SYS_HAS_CPU_R5500
1560 config SYS_HAS_CPU_R6000
1563 config SYS_HAS_CPU_NEVADA
1566 config SYS_HAS_CPU_R8000
1569 config SYS_HAS_CPU_R10000
1572 config SYS_HAS_CPU_RM7000
1575 config SYS_HAS_CPU_SB1
1578 config SYS_HAS_CPU_CAVIUM_OCTEON
1581 config SYS_HAS_CPU_BMIPS3300
1584 config SYS_HAS_CPU_BMIPS4350
1587 config SYS_HAS_CPU_BMIPS4380
1590 config SYS_HAS_CPU_BMIPS5000
1593 config SYS_HAS_CPU_XLR
1596 config SYS_HAS_CPU_XLP
1600 # CPU may reorder R->R, R->W, W->R, W->W
1601 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1603 config WEAK_ORDERING
1607 # CPU may reorder reads and writes beyond LL/SC
1608 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1610 config WEAK_REORDERING_BEYOND_LLSC
1615 # These two indicate any level of the MIPS32 and MIPS64 architecture
1619 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1623 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1626 # These two indicate the revision of the architecture, either Release 1 or Release 2
1630 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1634 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1636 config SYS_SUPPORTS_32BIT_KERNEL
1638 config SYS_SUPPORTS_64BIT_KERNEL
1640 config CPU_SUPPORTS_32BIT_KERNEL
1642 config CPU_SUPPORTS_64BIT_KERNEL
1644 config CPU_SUPPORTS_CPUFREQ
1646 config CPU_SUPPORTS_ADDRWINCFG
1648 config CPU_SUPPORTS_HUGEPAGES
1650 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1652 config MIPS_PGD_C0_CONTEXT
1654 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1657 # Set to y for ptrace access to watch registers.
1659 config HARDWARE_WATCHPOINTS
1661 default y if CPU_MIPSR1 || CPU_MIPSR2
1666 prompt "Kernel code model"
1668 You should only select this option if you have a workload that
1669 actually benefits from 64-bit processing or if your machine has
1670 large memory. You will only be presented a single option in this
1671 menu if your system does not support both 32-bit and 64-bit kernels.
1674 bool "32-bit kernel"
1675 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1678 Select this option if you want to build a 32-bit kernel.
1680 bool "64-bit kernel"
1681 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1683 Select this option if you want to build a 64-bit kernel.
1688 bool "KVM Guest Kernel"
1689 depends on BROKEN_ON_SMP
1691 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1693 config KVM_HOST_FREQ
1694 int "KVM Host Processor Frequency (MHz)"
1695 depends on KVM_GUEST
1698 Select this option if building a guest kernel for KVM to skip
1699 RTC emulation when determining guest CPU Frequency. Instead, the guest
1700 processor frequency is automatically derived from the host frequency.
1703 prompt "Kernel page size"
1704 default PAGE_SIZE_4KB
1706 config PAGE_SIZE_4KB
1708 depends on !CPU_LOONGSON2
1710 This option select the standard 4kB Linux page size. On some
1711 R3000-family processors this is the only available page size. Using
1712 4kB page size will minimize memory consumption and is therefore
1713 recommended for low memory systems.
1715 config PAGE_SIZE_8KB
1717 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1719 Using 8kB page size will result in higher performance kernel at
1720 the price of higher memory consumption. This option is available
1721 only on R8000 and cnMIPS processors. Note that you will need a
1722 suitable Linux distribution to support this.
1724 config PAGE_SIZE_16KB
1726 depends on !CPU_R3000 && !CPU_TX39XX
1728 Using 16kB page size will result in higher performance kernel at
1729 the price of higher memory consumption. This option is available on
1730 all non-R3000 family processors. Note that you will need a suitable
1731 Linux distribution to support this.
1733 config PAGE_SIZE_32KB
1735 depends on CPU_CAVIUM_OCTEON
1737 Using 32kB page size will result in higher performance kernel at
1738 the price of higher memory consumption. This option is available
1739 only on cnMIPS cores. Note that you will need a suitable Linux
1740 distribution to support this.
1742 config PAGE_SIZE_64KB
1744 depends on !CPU_R3000 && !CPU_TX39XX
1746 Using 64kB page size will result in higher performance kernel at
1747 the price of higher memory consumption. This option is available on
1748 all non-R3000 family processor. Not that at the time of this
1749 writing this option is still high experimental.
1753 config FORCE_MAX_ZONEORDER
1754 int "Maximum zone order"
1755 range 14 64 if HUGETLB_PAGE && PAGE_SIZE_64KB
1756 default "14" if HUGETLB_PAGE && PAGE_SIZE_64KB
1757 range 13 64 if HUGETLB_PAGE && PAGE_SIZE_32KB
1758 default "13" if HUGETLB_PAGE && PAGE_SIZE_32KB
1759 range 12 64 if HUGETLB_PAGE && PAGE_SIZE_16KB
1760 default "12" if HUGETLB_PAGE && PAGE_SIZE_16KB
1764 The kernel memory allocator divides physically contiguous memory
1765 blocks into "zones", where each zone is a power of two number of
1766 pages. This option selects the largest power of two that the kernel
1767 keeps in the memory allocator. If you need to allocate very large
1768 blocks of physically contiguous memory, then you may need to
1769 increase this value.
1771 This config option is actually maximum order plus one. For example,
1772 a value of 11 means that the largest free memory block is 2^10 pages.
1774 The page size is not necessarily 4KB. Keep this in mind
1775 when choosing a value for this option.
1778 bool "Use GIC global counter for clock events"
1779 depends on IRQ_GIC && !(MIPS_SEAD3 || MIPS_MT_SMTC)
1781 Use the GIC global counter for the clock events. The R4K clock
1782 event driver is always present, so if the platform ends up not
1783 detecting a GIC, it will fall back to the R4K timer for the
1784 generation of clock events.
1789 config IP22_CPU_SCACHE
1794 # Support for a MIPS32 / MIPS64 style S-caches
1796 config MIPS_CPU_SCACHE
1800 config R5000_CPU_SCACHE
1804 config RM7000_CPU_SCACHE
1808 config SIBYTE_DMA_PAGEOPS
1809 bool "Use DMA to clear/copy pages"
1812 Instead of using the CPU to zero and copy pages, use a Data Mover
1813 channel. These DMA channels are otherwise unused by the standard
1814 SiByte Linux port. Seems to give a small performance benefit.
1816 config CPU_HAS_PREFETCH
1819 config CPU_GENERIC_DUMP_TLB
1821 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
1825 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1827 config CPU_R4K_CACHE_TLB
1829 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1832 prompt "MIPS MT options"
1834 config MIPS_MT_DISABLED
1835 bool "Disable multithreading support."
1837 Use this option if your workload can't take advantage of
1838 MIPS hardware multithreading support. On systems that don't have
1839 the option of an MT-enabled processor this option will be the only
1840 option in this menu.
1843 bool "Use 1 TC on each available VPE for SMP"
1844 depends on SYS_SUPPORTS_MULTITHREADING
1845 select CPU_MIPSR2_IRQ_VI
1846 select CPU_MIPSR2_IRQ_EI
1849 select SYS_SUPPORTS_SCHED_SMT if SMP
1850 select SYS_SUPPORTS_SMP
1852 select MIPS_PERF_SHARED_TC_COUNTERS
1854 This is a kernel model which is known a VSMP but lately has been
1855 marketesed into SMVP.
1856 Virtual SMP uses the processor's VPEs to implement virtual
1857 processors. In currently available configuration of the 34K processor
1858 this allows for a dual processor. Both processors will share the same
1859 primary caches; each will obtain the half of the TLB for it's own
1860 exclusive use. For a layman this model can be described as similar to
1861 what Intel calls Hyperthreading.
1863 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1866 bool "SMTC: Use all TCs on all VPEs for SMP"
1867 depends on CPU_MIPS32_R2
1868 #depends on CPU_MIPS64_R2 # once there is hardware ...
1869 depends on SYS_SUPPORTS_MULTITHREADING
1870 select CPU_MIPSR2_IRQ_VI
1871 select CPU_MIPSR2_IRQ_EI
1873 select NR_CPUS_DEFAULT_8
1875 select SYS_SUPPORTS_SMP
1878 This is a kernel model which is known a SMTC or lately has been
1879 marketesed into SMVP.
1880 is presenting the available TC's of the core as processors to Linux.
1881 On currently available 34K processors this means a Linux system will
1882 see up to 5 processors. The implementation of the SMTC kernel differs
1883 significantly from VSMP and cannot efficiently coexist in the same
1884 kernel binary so the choice between VSMP and SMTC is a compile time
1887 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1895 bool "SMT (multithreading) scheduler support"
1896 depends on SYS_SUPPORTS_SCHED_SMT
1899 SMT scheduler support improves the CPU scheduler's decision making
1900 when dealing with MIPS MT enabled cores at a cost of slightly
1901 increased overhead in some places. If unsure say N here.
1903 config SYS_SUPPORTS_SCHED_SMT
1906 config SYS_SUPPORTS_MULTITHREADING
1909 config MIPS_MT_FPAFF
1910 bool "Dynamic FPU affinity for FP-intensive threads"
1912 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1914 config MIPS_VPE_LOADER
1915 bool "VPE loader support."
1916 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
1917 select CPU_MIPSR2_IRQ_VI
1918 select CPU_MIPSR2_IRQ_EI
1921 Includes a loader for loading an elf relocatable object
1922 onto another VPE and running it.
1924 config MIPS_MT_SMTC_IM_BACKSTOP
1925 bool "Use per-TC register bits as backstop for inhibited IM bits"
1926 depends on MIPS_MT_SMTC
1929 To support multiple TC microthreads acting as "CPUs" within
1930 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1931 during interrupt handling. To support legacy drivers and interrupt
1932 controller management code, SMTC has a "backstop" to track and
1933 if necessary restore the interrupt mask. This has some performance
1934 impact on interrupt service overhead.
1936 config MIPS_MT_SMTC_IRQAFF
1937 bool "Support IRQ affinity API"
1938 depends on MIPS_MT_SMTC
1941 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1942 for SMTC Linux kernel. Requires platform support, of which
1943 an example can be found in the MIPS kernel i8259 and Malta
1944 platform code. Adds some overhead to interrupt dispatch, and
1945 should be used only if you know what you are doing.
1947 config MIPS_VPE_LOADER_TOM
1948 bool "Load VPE program into memory hidden from linux"
1949 depends on MIPS_VPE_LOADER
1952 The loader can use memory that is present but has been hidden from
1953 Linux using the kernel command line option "mem=xxMB". It's up to
1954 you to ensure the amount you put in the option and the space your
1955 program requires is less or equal to the amount physically present.
1957 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1958 config MIPS_VPE_APSP_API
1959 bool "Enable support for AP/SP API (RTLX)"
1960 depends on MIPS_VPE_LOADER
1964 bool "MIPS CMP framework support"
1965 depends on SYS_SUPPORTS_MIPS_CMP
1968 select SYS_SUPPORTS_SMP
1969 select SYS_SUPPORTS_SCHED_SMT if SMP
1970 select WEAK_ORDERING
1973 This is a placeholder option for the GCMP work. It will need to
1974 be handled differently...
1976 config SB1_PASS_1_WORKAROUNDS
1978 depends on CPU_SB1_PASS_1
1981 config SB1_PASS_2_WORKAROUNDS
1983 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1986 config SB1_PASS_2_1_WORKAROUNDS
1988 depends on CPU_SB1 && CPU_SB1_PASS_2
1992 config 64BIT_PHYS_ADDR
1995 config ARCH_PHYS_ADDR_T_64BIT
1996 def_bool 64BIT_PHYS_ADDR
1998 config CPU_HAS_SMARTMIPS
1999 depends on SYS_SUPPORTS_SMARTMIPS
2000 bool "Support for the SmartMIPS ASE"
2002 SmartMIPS is a extension of the MIPS32 architecture aimed at
2003 increased security at both hardware and software level for
2004 smartcards. Enabling this option will allow proper use of the
2005 SmartMIPS instructions by Linux applications. However a kernel with
2006 this option will not work on a MIPS core without SmartMIPS core. If
2007 you don't know you probably don't have SmartMIPS and should say N
2010 config CPU_MICROMIPS
2011 depends on SYS_SUPPORTS_MICROMIPS
2012 bool "Build kernel using microMIPS ISA"
2014 When this option is enabled the kernel will be built using the
2024 # Vectored interrupt mode is an R2 feature
2026 config CPU_MIPSR2_IRQ_VI
2030 # Extended interrupt mode is an R2 feature
2032 config CPU_MIPSR2_IRQ_EI
2037 depends on !CPU_R3000
2043 config CPU_DADDI_WORKAROUNDS
2046 config CPU_R4000_WORKAROUNDS
2048 select CPU_R4400_WORKAROUNDS
2050 config CPU_R4400_WORKAROUNDS
2054 # - Highmem only makes sense for the 32-bit kernel.
2055 # - The current highmem code will only work properly on physically indexed
2056 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2057 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2058 # moment we protect the user and offer the highmem option only on machines
2059 # where it's known to be safe. This will not offer highmem on a few systems
2060 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2061 # indexed CPUs but we're playing safe.
2062 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2063 # know they might have memory configurations that could make use of highmem
2067 bool "High Memory Support"
2068 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2070 config CPU_SUPPORTS_HIGHMEM
2073 config SYS_SUPPORTS_HIGHMEM
2076 config SYS_SUPPORTS_SMARTMIPS
2079 config SYS_SUPPORTS_MICROMIPS
2082 config ARCH_FLATMEM_ENABLE
2084 depends on !NUMA && !CPU_LOONGSON2
2086 config ARCH_DISCONTIGMEM_ENABLE
2088 default y if SGI_IP27
2090 Say Y to support efficient handling of discontiguous physical memory,
2091 for architectures which are either NUMA (Non-Uniform Memory Access)
2092 or have huge holes in the physical address space for other reasons.
2093 See <file:Documentation/vm/numa> for more.
2095 config ARCH_SPARSEMEM_ENABLE
2097 select SPARSEMEM_STATIC
2101 depends on SYS_SUPPORTS_NUMA
2103 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2104 Access). This option improves performance on systems with more
2105 than two nodes; on two node systems it is generally better to
2106 leave it disabled; on single node systems disable this option
2109 config SYS_SUPPORTS_NUMA
2115 depends on NEED_MULTIPLE_NODES
2117 config HW_PERF_EVENTS
2118 bool "Enable hardware performance counter support for perf events"
2119 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2122 Enable hardware performance counter support for perf events. If
2123 disabled, perf events will use software events only.
2128 bool "Multi-Processing support"
2129 depends on SYS_SUPPORTS_SMP
2131 This enables support for systems with more than one CPU. If you have
2132 a system with only one CPU, like most personal computers, say N. If
2133 you have a system with more than one CPU, say Y.
2135 If you say N here, the kernel will run on single and multiprocessor
2136 machines, but will use only one CPU of a multiprocessor machine. If
2137 you say Y here, the kernel will run on many, but not all,
2138 singleprocessor machines. On a singleprocessor machine, the kernel
2139 will run faster if you say N here.
2141 People using multiprocessor machines who say Y here should also say
2142 Y to "Enhanced Real Time Clock Support", below.
2144 See also the SMP-HOWTO available at
2145 <http://www.tldp.org/docs.html#howto>.
2147 If you don't know what to do here, say N.
2152 config SYS_SUPPORTS_MIPS_CMP
2155 config SYS_SUPPORTS_SMP
2158 config NR_CPUS_DEFAULT_4
2161 config NR_CPUS_DEFAULT_8
2164 config NR_CPUS_DEFAULT_16
2167 config NR_CPUS_DEFAULT_32
2170 config NR_CPUS_DEFAULT_64
2174 int "Maximum number of CPUs (2-64)"
2177 default "4" if NR_CPUS_DEFAULT_4
2178 default "8" if NR_CPUS_DEFAULT_8
2179 default "16" if NR_CPUS_DEFAULT_16
2180 default "32" if NR_CPUS_DEFAULT_32
2181 default "64" if NR_CPUS_DEFAULT_64
2183 This allows you to specify the maximum number of CPUs which this
2184 kernel will support. The maximum supported value is 32 for 32-bit
2185 kernel and 64 for 64-bit kernels; the minimum value which makes
2186 sense is 1 for Qemu (useful only for kernel debugging purposes)
2187 and 2 for all others.
2189 This is purely to save memory - each supported CPU adds
2190 approximately eight kilobytes to the kernel image. For best
2191 performance should round up your number of processors to the next
2194 config MIPS_PERF_SHARED_TC_COUNTERS
2198 # Timer Interrupt Frequency Configuration
2202 prompt "Timer frequency"
2205 Allows the configuration of the timer frequency.
2208 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2211 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2214 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2217 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2220 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2223 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2226 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2230 config SYS_SUPPORTS_48HZ
2233 config SYS_SUPPORTS_100HZ
2236 config SYS_SUPPORTS_128HZ
2239 config SYS_SUPPORTS_250HZ
2242 config SYS_SUPPORTS_256HZ
2245 config SYS_SUPPORTS_1000HZ
2248 config SYS_SUPPORTS_1024HZ
2251 config SYS_SUPPORTS_ARBIT_HZ
2253 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2254 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2255 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2256 !SYS_SUPPORTS_1024HZ
2261 default 100 if HZ_100
2262 default 128 if HZ_128
2263 default 250 if HZ_250
2264 default 256 if HZ_256
2265 default 1000 if HZ_1000
2266 default 1024 if HZ_1024
2268 source "kernel/Kconfig.preempt"
2271 bool "Kexec system call"
2273 kexec is a system call that implements the ability to shutdown your
2274 current kernel, and to start another kernel. It is like a reboot
2275 but it is independent of the system firmware. And like a reboot
2276 you can start any kernel with it, not just Linux.
2278 The name comes from the similarity to the exec system call.
2280 It is an ongoing process to be certain the hardware in a machine
2281 is properly shutdown, so do not be surprised if this code does not
2282 initially work for you. As of this writing the exact hardware
2283 interface is strongly in flux, so no good recommendation can be
2287 bool "Kernel crash dumps"
2289 Generate crash dump after being started by kexec.
2290 This should be normally only set in special crash dump kernels
2291 which are loaded in the main kernel with kexec-tools into
2292 a specially reserved region and then later executed after
2293 a crash by kdump/kexec. The crash dump kernel must be compiled
2294 to a memory address not used by the main kernel or firmware using
2297 config PHYSICAL_START
2298 hex "Physical address where the kernel is loaded"
2299 default "0xffffffff84000000" if 64BIT
2300 default "0x84000000" if 32BIT
2301 depends on CRASH_DUMP
2303 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2304 If you plan to use kernel for capturing the crash dump change
2305 this value to start of the reserved region (the "X" value as
2306 specified in the "crashkernel=YM@XM" command line boot parameter
2307 passed to the panic-ed kernel).
2310 bool "Enable seccomp to safely compute untrusted bytecode"
2314 This kernel feature is useful for number crunching applications
2315 that may need to compute untrusted bytecode during their
2316 execution. By using pipes or other transports made available to
2317 the process as file descriptors supporting the read/write
2318 syscalls, it's possible to isolate those applications in
2319 their own address space using seccomp. Once seccomp is
2320 enabled via /proc/<pid>/seccomp, it cannot be disabled
2321 and the task is only allowed to execute a few safe syscalls
2322 defined by each seccomp mode.
2324 If unsure, say Y. Only embedded should say N here.
2329 select OF_EARLY_FLATTREE
2334 config LOCKDEP_SUPPORT
2338 config STACKTRACE_SUPPORT
2342 source "init/Kconfig"
2344 source "kernel/Kconfig.freezer"
2346 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2354 bool "Support for PCI controller"
2355 depends on HW_HAS_PCI
2357 select NO_GENERIC_PCI_IOPORT_MAP
2359 Find out whether you have a PCI motherboard. PCI is the name of a
2360 bus system, i.e. the way the CPU talks to the other stuff inside
2361 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2367 source "drivers/pci/Kconfig"
2369 source "drivers/pci/pcie/Kconfig"
2372 # ISA support is now enabled via select. Too many systems still have the one
2373 # or other ISA chip on the board that users don't know about so don't expect
2374 # users to choose the right thing ...
2381 depends on HW_HAS_EISA
2383 select GENERIC_ISA_DMA
2385 The Extended Industry Standard Architecture (EISA) bus was
2386 developed as an open alternative to the IBM MicroChannel bus.
2388 The EISA bus provided some of the features of the IBM MicroChannel
2389 bus while maintaining backward compatibility with cards made for
2390 the older ISA bus. The EISA bus saw limited use between 1988 and
2391 1995 when it was made obsolete by the PCI bus.
2393 Say Y here if you are building a kernel for an EISA-based machine.
2397 source "drivers/eisa/Kconfig"
2400 bool "TURBOchannel support"
2401 depends on MACH_DECSTATION
2403 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2404 processors. TURBOchannel programming specifications are available
2406 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2408 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2409 Linux driver support status is documented at:
2410 <http://www.linux-mips.org/wiki/DECstation>
2420 select MIPS_EXTERNAL_TIMER
2428 source "drivers/pcmcia/Kconfig"
2430 source "drivers/pci/hotplug/Kconfig"
2433 bool "RapidIO support"
2437 If you say Y here, the kernel will include drivers and
2438 infrastructure code to support RapidIO interconnect devices.
2440 source "drivers/rapidio/Kconfig"
2444 menu "Executable file formats"
2446 source "fs/Kconfig.binfmt"
2451 config MIPS32_COMPAT
2452 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2455 Select this option if you want Linux/MIPS 32-bit binary
2456 compatibility. Since all software available for Linux/MIPS is
2457 currently 32-bit you should say Y here.
2461 depends on MIPS32_COMPAT
2462 select ARCH_WANT_OLD_COMPAT_IPC
2465 config SYSVIPC_COMPAT
2467 depends on COMPAT && SYSVIPC
2471 bool "Kernel support for o32 binaries"
2472 depends on MIPS32_COMPAT
2474 Select this option if you want to run o32 binaries. These are pure
2475 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2476 existing binaries are in this format.
2481 bool "Kernel support for n32 binaries"
2482 depends on MIPS32_COMPAT
2484 Select this option if you want to run n32 binaries. These are
2485 64-bit binaries using 32-bit quantities for addressing and certain
2486 data that would normally be 64-bit. They are used in special
2493 default y if MIPS32_O32 || MIPS32_N32
2497 menu "Power management options"
2499 config ARCH_HIBERNATION_POSSIBLE
2501 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2503 config ARCH_SUSPEND_POSSIBLE
2505 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2507 source "kernel/power/Kconfig"
2511 config MIPS_EXTERNAL_TIMER
2514 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2515 menu "CPU Power Management"
2516 source "drivers/cpufreq/Kconfig"
2520 source "net/Kconfig"
2522 source "drivers/Kconfig"
2524 source "drivers/firmware/Kconfig"
2528 source "arch/mips/Kconfig.debug"
2530 source "security/Kconfig"
2532 source "crypto/Kconfig"
2534 source "lib/Kconfig"
2536 source "arch/mips/kvm/Kconfig"