4 select HAVE_GENERIC_DMA_COHERENT
7 select HAVE_PERF_EVENTS
8 select PERF_USE_VMALLOC
10 select ARCH_HAVE_CUSTOM_GPIO_H
11 select HAVE_FUNCTION_TRACER
12 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
13 select HAVE_DYNAMIC_FTRACE
14 select HAVE_FTRACE_MCOUNT_RECORD
15 select HAVE_C_RECORDMCOUNT
16 select HAVE_FUNCTION_GRAPH_TRACER
18 select HAVE_KRETPROBES
19 select HAVE_DEBUG_KMEMLEAK
20 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
21 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
22 select RTC_LIB if !MACH_LOONGSON
23 select GENERIC_ATOMIC64 if !64BIT
24 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
26 select HAVE_DMA_API_DEBUG
27 select HAVE_GENERIC_HARDIRQS
28 select GENERIC_IRQ_PROBE
29 select GENERIC_IRQ_SHOW
30 select HAVE_ARCH_JUMP_LABEL
31 select ARCH_WANT_IPC_PARSE_VERSION
32 select IRQ_FORCED_THREADING
34 select HAVE_MEMBLOCK_NODE_MAP
35 select ARCH_DISCARD_MEMBLOCK
36 select GENERIC_SMP_IDLE_THREAD
37 select BUILDTIME_EXTABLE_SORT
38 select GENERIC_CLOCKEVENTS
39 select GENERIC_CMOS_UPDATE
40 select HAVE_MOD_ARCH_SPECIFIC
42 select MODULES_USE_ELF_REL if MODULES
43 select MODULES_USE_ELF_RELA if MODULES && 64BIT
44 select CLONE_BACKWARDS
46 menu "Machine selection"
56 bool "Alchemy processor based machines"
57 select 64BIT_PHYS_ADDR
61 select SYS_HAS_CPU_MIPS32_R1
62 select SYS_SUPPORTS_32BIT_KERNEL
63 select SYS_SUPPORTS_APM_EMULATION
64 select ARCH_REQUIRE_GPIOLIB
65 select SYS_SUPPORTS_ZBOOT
66 select USB_ARCH_HAS_OHCI
67 select USB_ARCH_HAS_EHCI
70 bool "Texas Instruments AR7"
72 select DMA_NONCOHERENT
78 select SYS_HAS_CPU_MIPS32_R1
79 select SYS_HAS_EARLY_PRINTK
80 select SYS_SUPPORTS_32BIT_KERNEL
81 select SYS_SUPPORTS_LITTLE_ENDIAN
82 select SYS_SUPPORTS_ZBOOT_UART16550
83 select ARCH_REQUIRE_GPIOLIB
87 Support for the Texas Instruments AR7 System-on-a-Chip
88 family: TNETD7100, 7200 and 7300.
91 bool "Atheros AR71XX/AR724X/AR913X based boards"
92 select ARCH_REQUIRE_GPIOLIB
96 select DMA_NONCOHERENT
100 select SYS_HAS_CPU_MIPS32_R2
101 select SYS_HAS_EARLY_PRINTK
102 select SYS_SUPPORTS_32BIT_KERNEL
103 select SYS_SUPPORTS_BIG_ENDIAN
105 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
108 bool "Broadcom BCM47XX based boards"
109 select ARCH_WANT_OPTIONAL_GPIOLIB
113 select DMA_NONCOHERENT
117 select NO_EXCEPT_FILL
118 select SYS_SUPPORTS_32BIT_KERNEL
119 select SYS_SUPPORTS_LITTLE_ENDIAN
120 select SYS_HAS_EARLY_PRINTK
122 Support for BCM47XX based boards
125 bool "Broadcom BCM63XX based boards"
128 select DMA_NONCOHERENT
130 select SYS_HAS_CPU_MIPS32_R1
131 select SYS_SUPPORTS_32BIT_KERNEL
132 select SYS_SUPPORTS_BIG_ENDIAN
133 select SYS_HAS_EARLY_PRINTK
135 select ARCH_REQUIRE_GPIOLIB
138 Support for BCM63XX based boards
145 select DMA_NONCOHERENT
151 select PCI_GT64XXX_PCI0
153 select SYS_HAS_CPU_NEVADA
154 select SYS_HAS_EARLY_PRINTK
155 select SYS_SUPPORTS_32BIT_KERNEL
156 select SYS_SUPPORTS_64BIT_KERNEL
157 select SYS_SUPPORTS_LITTLE_ENDIAN
159 config MACH_DECSTATION
166 select CPU_DADDI_WORKAROUNDS if 64BIT
167 select CPU_R4000_WORKAROUNDS if 64BIT
168 select CPU_R4400_WORKAROUNDS if 64BIT
169 select DMA_NONCOHERENT
172 select SYS_HAS_CPU_R3000
173 select SYS_HAS_CPU_R4X00
174 select SYS_SUPPORTS_32BIT_KERNEL
175 select SYS_SUPPORTS_64BIT_KERNEL
176 select SYS_SUPPORTS_LITTLE_ENDIAN
177 select SYS_SUPPORTS_128HZ
178 select SYS_SUPPORTS_256HZ
179 select SYS_SUPPORTS_1024HZ
181 This enables support for DEC's MIPS based workstations. For details
182 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
183 DECstation porting pages on <http://decstation.unix-ag.org/>.
185 If you have one of the following DECstation Models you definitely
186 want to choose R4xx0 for the CPU Type:
193 otherwise choose R3000.
196 bool "Jazz family of machines"
199 select ARCH_MAY_HAVE_PC_FDC
202 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
203 select GENERIC_ISA_DMA
204 select HAVE_PCSPKR_PLATFORM
209 select SYS_HAS_CPU_R4X00
210 select SYS_SUPPORTS_32BIT_KERNEL
211 select SYS_SUPPORTS_64BIT_KERNEL
212 select SYS_SUPPORTS_100HZ
214 This a family of machines based on the MIPS R4030 chipset which was
215 used by several vendors to build RISC/os and Windows NT workstations.
216 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
217 Olivetti M700-10 workstations.
220 bool "Ingenic JZ4740 based machines"
221 select SYS_HAS_CPU_MIPS32_R1
222 select SYS_SUPPORTS_32BIT_KERNEL
223 select SYS_SUPPORTS_LITTLE_ENDIAN
224 select SYS_SUPPORTS_ZBOOT_UART16550
225 select DMA_NONCOHERENT
227 select ARCH_REQUIRE_GPIOLIB
228 select SYS_HAS_EARLY_PRINTK
231 select GENERIC_IRQ_CHIP
234 bool "Lantiq based platforms"
235 select DMA_NONCOHERENT
239 select SYS_HAS_CPU_MIPS32_R1
240 select SYS_HAS_CPU_MIPS32_R2
241 select SYS_SUPPORTS_BIG_ENDIAN
242 select SYS_SUPPORTS_32BIT_KERNEL
243 select SYS_SUPPORTS_MULTITHREADING
244 select SYS_HAS_EARLY_PRINTK
245 select ARCH_REQUIRE_GPIOLIB
248 select HAVE_MACH_CLKDEV
252 select PINCTRL_LANTIQ
255 bool "LASAT Networks platforms"
258 select DMA_NONCOHERENT
259 select SYS_HAS_EARLY_PRINTK
262 select PCI_GT64XXX_PCI0
264 select R5000_CPU_SCACHE
265 select SYS_HAS_CPU_R5000
266 select SYS_SUPPORTS_32BIT_KERNEL
267 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
268 select SYS_SUPPORTS_LITTLE_ENDIAN
271 bool "Loongson family of machines"
272 select SYS_SUPPORTS_ZBOOT
274 This enables the support of Loongson family of machines.
276 Loongson is a family of general-purpose MIPS-compatible CPUs.
277 developed at Institute of Computing Technology (ICT),
278 Chinese Academy of Sciences (CAS) in the People's Republic
279 of China. The chief architect is Professor Weiwu Hu.
281 config MACH_LOONGSON1
282 bool "Loongson 1 family of machines"
283 select SYS_SUPPORTS_ZBOOT
285 This enables support for the Loongson 1 based machines.
287 Loongson 1 is a family of 32-bit MIPS-compatible SoCs developed by
288 the ICT (Institute of Computing Technology) and the Chinese Academy
292 bool "MIPS Malta board"
293 select ARCH_MAY_HAVE_PC_FDC
299 select DMA_NONCOHERENT
300 select GENERIC_ISA_DMA
301 select HAVE_PCSPKR_PLATFORM
308 select MIPS_CPU_SCACHE
309 select PCI_GT64XXX_PCI0
312 select SYS_HAS_CPU_MIPS32_R1
313 select SYS_HAS_CPU_MIPS32_R2
314 select SYS_HAS_CPU_MIPS64_R1
315 select SYS_HAS_CPU_MIPS64_R2
316 select SYS_HAS_CPU_NEVADA
317 select SYS_HAS_CPU_RM7000
318 select SYS_HAS_EARLY_PRINTK
319 select SYS_SUPPORTS_32BIT_KERNEL
320 select SYS_SUPPORTS_64BIT_KERNEL
321 select SYS_SUPPORTS_BIG_ENDIAN
322 select SYS_SUPPORTS_LITTLE_ENDIAN
323 select SYS_SUPPORTS_MIPS_CMP
324 select SYS_SUPPORTS_MULTITHREADING
325 select SYS_SUPPORTS_SMARTMIPS
326 select SYS_SUPPORTS_ZBOOT
328 This enables support for the MIPS Technologies Malta evaluation
332 bool "MIPS SEAD3 board"
338 select CPU_MIPSR2_IRQ_VI
339 select CPU_MIPSR2_IRQ_EI
340 select DMA_NONCOHERENT
343 select MIPS_CPU_SCACHE
345 select SYS_HAS_CPU_MIPS32_R1
346 select SYS_HAS_CPU_MIPS32_R2
347 select SYS_HAS_CPU_MIPS64_R1
348 select SYS_HAS_EARLY_PRINTK
349 select SYS_SUPPORTS_32BIT_KERNEL
350 select SYS_SUPPORTS_64BIT_KERNEL
351 select SYS_SUPPORTS_BIG_ENDIAN
352 select SYS_SUPPORTS_LITTLE_ENDIAN
353 select SYS_SUPPORTS_SMARTMIPS
354 select SYS_SUPPORTS_MICROMIPS
355 select USB_ARCH_HAS_EHCI
356 select USB_EHCI_BIG_ENDIAN_DESC
357 select USB_EHCI_BIG_ENDIAN_MMIO
360 This enables support for the MIPS Technologies SEAD3 evaluation
364 bool "NEC EMMA2RH Mark-eins board"
368 This enables support for the NEC Electronics Mark-eins boards.
371 bool "NEC VR4100 series based machines"
374 select SYS_HAS_CPU_VR41XX
375 select ARCH_REQUIRE_GPIOLIB
378 bool "NXP STB220 board"
381 Support for NXP Semiconductors STB220 Development Board.
388 Support for NXP Semiconductors STB225 Development Board.
391 bool "PMC-Sierra MSP chipsets"
394 select DMA_NONCOHERENT
396 select NO_EXCEPT_FILL
398 select SYS_HAS_CPU_MIPS32_R1
399 select SYS_HAS_CPU_MIPS32_R2
400 select SYS_SUPPORTS_32BIT_KERNEL
401 select SYS_SUPPORTS_BIG_ENDIAN
404 select SERIAL_8250_CONSOLE
405 select USB_EHCI_BIG_ENDIAN_MMIO
406 select USB_EHCI_BIG_ENDIAN_DESC
408 This adds support for the PMC-Sierra family of Multi-Service
409 Processor System-On-A-Chips. These parts include a number
410 of integrated peripherals, interfaces and DSPs in addition to
411 a variety of MIPS cores.
417 select CPU_MIPSR2_IRQ_VI
418 select CPU_MIPSR2_IRQ_EI
420 select DMA_NONCOHERENT
422 select SYS_HAS_EARLY_PRINTK
423 select SYS_HAS_CPU_MIPS32_R2
424 select SYS_SUPPORTS_32BIT_KERNEL
425 select SYS_SUPPORTS_BIG_ENDIAN
426 select SYS_SUPPORTS_HIGHMEM
427 select USB_OHCI_LITTLE_ENDIAN
429 This enables support for the Cisco PowerTV Platform.
432 bool "Ralink based machines"
436 select DMA_NONCOHERENT
439 select SYS_HAS_CPU_MIPS32_R1
440 select SYS_HAS_CPU_MIPS32_R2
441 select SYS_SUPPORTS_32BIT_KERNEL
442 select SYS_SUPPORTS_LITTLE_ENDIAN
443 select SYS_HAS_EARLY_PRINTK
444 select HAVE_MACH_CLKDEV
448 bool "SGI IP22 (Indy/Indigo2)"
454 select DEFAULT_SGI_PARTITION
455 select DMA_NONCOHERENT
459 select IP22_CPU_SCACHE
461 select GENERIC_ISA_DMA_SUPPORT_BROKEN
463 select SGI_HAS_INDYDOG
469 select SYS_HAS_CPU_R4X00
470 select SYS_HAS_CPU_R5000
472 # Disable EARLY_PRINTK for now since it leads to overwritten prom
473 # memory during early boot on some machines.
475 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
476 # for a more details discussion
478 # select SYS_HAS_EARLY_PRINTK
479 select SYS_SUPPORTS_32BIT_KERNEL
480 select SYS_SUPPORTS_64BIT_KERNEL
481 select SYS_SUPPORTS_BIG_ENDIAN
483 This are the SGI Indy, Challenge S and Indigo2, as well as certain
484 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
485 that runs on these, say Y here.
488 bool "SGI IP27 (Origin200/2000)"
492 select DEFAULT_SGI_PARTITION
494 select SYS_HAS_EARLY_PRINTK
496 select NR_CPUS_DEFAULT_64
497 select SYS_HAS_CPU_R10000
498 select SYS_SUPPORTS_64BIT_KERNEL
499 select SYS_SUPPORTS_BIG_ENDIAN
500 select SYS_SUPPORTS_NUMA
501 select SYS_SUPPORTS_SMP
503 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
504 workstations. To compile a Linux kernel that runs on these, say Y
508 bool "SGI IP28 (Indigo2 R10k)"
514 select DEFAULT_SGI_PARTITION
515 select DMA_NONCOHERENT
516 select GENERIC_ISA_DMA_SUPPORT_BROKEN
522 select SGI_HAS_INDYDOG
528 select SYS_HAS_CPU_R10000
530 # Disable EARLY_PRINTK for now since it leads to overwritten prom
531 # memory during early boot on some machines.
533 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
534 # for a more details discussion
536 # select SYS_HAS_EARLY_PRINTK
537 select SYS_SUPPORTS_64BIT_KERNEL
538 select SYS_SUPPORTS_BIG_ENDIAN
540 This is the SGI Indigo2 with R10000 processor. To compile a Linux
541 kernel that runs on these, say Y here.
550 select DMA_NONCOHERENT
553 select R5000_CPU_SCACHE
554 select RM7000_CPU_SCACHE
555 select SYS_HAS_CPU_R5000
556 select SYS_HAS_CPU_R10000 if BROKEN
557 select SYS_HAS_CPU_RM7000
558 select SYS_HAS_CPU_NEVADA
559 select SYS_SUPPORTS_64BIT_KERNEL
560 select SYS_SUPPORTS_BIG_ENDIAN
562 If you want this kernel to run on SGI O2 workstation, say Y here.
565 bool "Sibyte BCM91120C-CRhine"
568 select SIBYTE_BCM1120
570 select SYS_HAS_CPU_SB1
571 select SYS_SUPPORTS_BIG_ENDIAN
572 select SYS_SUPPORTS_LITTLE_ENDIAN
575 bool "Sibyte BCM91120x-Carmel"
578 select SIBYTE_BCM1120
580 select SYS_HAS_CPU_SB1
581 select SYS_SUPPORTS_BIG_ENDIAN
582 select SYS_SUPPORTS_LITTLE_ENDIAN
585 bool "Sibyte BCM91125C-CRhone"
588 select SIBYTE_BCM1125
590 select SYS_HAS_CPU_SB1
591 select SYS_SUPPORTS_BIG_ENDIAN
592 select SYS_SUPPORTS_HIGHMEM
593 select SYS_SUPPORTS_LITTLE_ENDIAN
596 bool "Sibyte BCM91125E-Rhone"
599 select SIBYTE_BCM1125H
601 select SYS_HAS_CPU_SB1
602 select SYS_SUPPORTS_BIG_ENDIAN
603 select SYS_SUPPORTS_LITTLE_ENDIAN
606 bool "Sibyte BCM91250A-SWARM"
609 select HAVE_PATA_PLATFORM
610 select NR_CPUS_DEFAULT_2
613 select SYS_HAS_CPU_SB1
614 select SYS_SUPPORTS_BIG_ENDIAN
615 select SYS_SUPPORTS_HIGHMEM
616 select SYS_SUPPORTS_LITTLE_ENDIAN
617 select ZONE_DMA32 if 64BIT
619 config SIBYTE_LITTLESUR
620 bool "Sibyte BCM91250C2-LittleSur"
623 select HAVE_PATA_PLATFORM
624 select NR_CPUS_DEFAULT_2
627 select SYS_HAS_CPU_SB1
628 select SYS_SUPPORTS_BIG_ENDIAN
629 select SYS_SUPPORTS_HIGHMEM
630 select SYS_SUPPORTS_LITTLE_ENDIAN
632 config SIBYTE_SENTOSA
633 bool "Sibyte BCM91250E-Sentosa"
636 select NR_CPUS_DEFAULT_2
639 select SYS_HAS_CPU_SB1
640 select SYS_SUPPORTS_BIG_ENDIAN
641 select SYS_SUPPORTS_LITTLE_ENDIAN
644 bool "Sibyte BCM91480B-BigSur"
647 select NR_CPUS_DEFAULT_4
648 select SIBYTE_BCM1x80
650 select SYS_HAS_CPU_SB1
651 select SYS_SUPPORTS_BIG_ENDIAN
652 select SYS_SUPPORTS_HIGHMEM
653 select SYS_SUPPORTS_LITTLE_ENDIAN
654 select ZONE_DMA32 if 64BIT
657 bool "SNI RM200/300/400"
658 select FW_ARC if CPU_LITTLE_ENDIAN
659 select FW_ARC32 if CPU_LITTLE_ENDIAN
660 select FW_SNIPROM if CPU_BIG_ENDIAN
661 select ARCH_MAY_HAVE_PC_FDC
665 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
666 select DMA_NONCOHERENT
667 select GENERIC_ISA_DMA
668 select HAVE_PCSPKR_PLATFORM
675 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
676 select SYS_HAS_CPU_R4X00
677 select SYS_HAS_CPU_R5000
678 select SYS_HAS_CPU_R10000
679 select R5000_CPU_SCACHE
680 select SYS_HAS_EARLY_PRINTK
681 select SYS_SUPPORTS_32BIT_KERNEL
682 select SYS_SUPPORTS_64BIT_KERNEL
683 select SYS_SUPPORTS_BIG_ENDIAN
684 select SYS_SUPPORTS_HIGHMEM
685 select SYS_SUPPORTS_LITTLE_ENDIAN
687 The SNI RM200/300/400 are MIPS-based machines manufactured by
688 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
689 Technology and now in turn merged with Fujitsu. Say Y here to
690 support this machine type.
693 bool "Toshiba TX39 series based machines"
696 bool "Toshiba TX49 series based machines"
698 config MIKROTIK_RB532
699 bool "Mikrotik RB532 boards"
702 select DMA_NONCOHERENT
705 select SYS_HAS_CPU_MIPS32_R1
706 select SYS_SUPPORTS_32BIT_KERNEL
707 select SYS_SUPPORTS_LITTLE_ENDIAN
710 select ARCH_REQUIRE_GPIOLIB
712 Support the Mikrotik(tm) RouterBoard 532 series,
713 based on the IDT RC32434 SoC.
716 bool "Wind River PPMC board"
721 select DMA_NONCOHERENT
723 select PCI_GT64XXX_PCI0
725 select SYS_HAS_CPU_MIPS32_R1
726 select SYS_HAS_CPU_MIPS32_R2
727 select SYS_HAS_CPU_MIPS64_R1
728 select SYS_HAS_CPU_NEVADA
729 select SYS_HAS_CPU_RM7000
730 select SYS_SUPPORTS_32BIT_KERNEL
731 select SYS_SUPPORTS_64BIT_KERNEL
732 select SYS_SUPPORTS_BIG_ENDIAN
733 select SYS_SUPPORTS_LITTLE_ENDIAN
735 This enables support for the Wind River MIPS32 4KC PPMC evaluation
736 board, which is based on GT64120 bridge chip.
738 config CAVIUM_OCTEON_SIMULATOR
739 bool "Cavium Networks Octeon Simulator"
741 select 64BIT_PHYS_ADDR
743 select SYS_SUPPORTS_64BIT_KERNEL
744 select SYS_SUPPORTS_BIG_ENDIAN
745 select SYS_SUPPORTS_HOTPLUG_CPU
746 select SYS_HAS_CPU_CAVIUM_OCTEON
749 The Octeon simulator is software performance model of the Cavium
750 Octeon Processor. It supports simulating Octeon processors on x86
753 config CAVIUM_OCTEON_REFERENCE_BOARD
754 bool "Cavium Networks Octeon reference board"
756 select 64BIT_PHYS_ADDR
758 select SYS_SUPPORTS_64BIT_KERNEL
759 select SYS_SUPPORTS_BIG_ENDIAN
761 select SYS_SUPPORTS_HOTPLUG_CPU
762 select SYS_HAS_EARLY_PRINTK
763 select SYS_HAS_CPU_CAVIUM_OCTEON
766 select ARCH_SUPPORTS_MSI
768 select USB_ARCH_HAS_OHCI
769 select USB_ARCH_HAS_EHCI
772 This option supports all of the Octeon reference boards from Cavium
773 Networks. It builds a kernel that dynamically determines the Octeon
774 CPU type and supports all known board reference implementations.
775 Some of the supported boards are:
782 Say Y here for most Octeon reference boards.
785 bool "Netlogic XLR/XLS based systems"
788 select SYS_HAS_CPU_XLR
789 select SYS_SUPPORTS_SMP
792 select SYS_SUPPORTS_32BIT_KERNEL
793 select SYS_SUPPORTS_64BIT_KERNEL
794 select 64BIT_PHYS_ADDR
795 select SYS_SUPPORTS_BIG_ENDIAN
796 select SYS_SUPPORTS_HIGHMEM
798 select NR_CPUS_DEFAULT_32
802 select ARCH_SUPPORTS_MSI
803 select ZONE_DMA32 if 64BIT
805 select SYS_HAS_EARLY_PRINTK
806 select USB_ARCH_HAS_OHCI if USB_SUPPORT
807 select USB_ARCH_HAS_EHCI if USB_SUPPORT
809 Support for systems based on Netlogic XLR and XLS processors.
810 Say Y here if you have a XLR or XLS based board.
813 bool "Netlogic XLP based systems"
816 select SYS_HAS_CPU_XLP
817 select SYS_SUPPORTS_SMP
819 select SYS_SUPPORTS_32BIT_KERNEL
820 select SYS_SUPPORTS_64BIT_KERNEL
821 select 64BIT_PHYS_ADDR
822 select SYS_SUPPORTS_BIG_ENDIAN
823 select SYS_SUPPORTS_LITTLE_ENDIAN
824 select SYS_SUPPORTS_HIGHMEM
826 select NR_CPUS_DEFAULT_32
830 select ZONE_DMA32 if 64BIT
832 select SYS_HAS_EARLY_PRINTK
835 This board is based on Netlogic XLP Processor.
836 Say Y here if you have a XLP based board.
840 source "arch/mips/alchemy/Kconfig"
841 source "arch/mips/ath79/Kconfig"
842 source "arch/mips/bcm47xx/Kconfig"
843 source "arch/mips/bcm63xx/Kconfig"
844 source "arch/mips/jazz/Kconfig"
845 source "arch/mips/jz4740/Kconfig"
846 source "arch/mips/lantiq/Kconfig"
847 source "arch/mips/lasat/Kconfig"
848 source "arch/mips/pmcs-msp71xx/Kconfig"
849 source "arch/mips/powertv/Kconfig"
850 source "arch/mips/ralink/Kconfig"
851 source "arch/mips/sgi-ip27/Kconfig"
852 source "arch/mips/sibyte/Kconfig"
853 source "arch/mips/txx9/Kconfig"
854 source "arch/mips/vr41xx/Kconfig"
855 source "arch/mips/cavium-octeon/Kconfig"
856 source "arch/mips/loongson/Kconfig"
857 source "arch/mips/loongson1/Kconfig"
858 source "arch/mips/netlogic/Kconfig"
862 config RWSEM_GENERIC_SPINLOCK
866 config RWSEM_XCHGADD_ALGORITHM
869 config ARCH_HAS_ILOG2_U32
873 config ARCH_HAS_ILOG2_U64
877 config GENERIC_HWEIGHT
881 config GENERIC_CALIBRATE_DELAY
885 config SCHED_OMIT_FRAME_POINTER
890 # Select some configuration options automatically based on user selections.
895 config ARCH_MAY_HAVE_PC_FDC
941 select ARCH_REQUIRE_GPIOLIB
947 config ARCH_DMA_ADDR_T_64BIT
948 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
953 config DMA_NONCOHERENT
955 select NEED_DMA_MAP_STATE
957 config NEED_DMA_MAP_STATE
960 config SYS_HAS_EARLY_PRINTK
964 bool "Support for hot-pluggable CPUs"
965 depends on SMP && HOTPLUG && SYS_SUPPORTS_HOTPLUG_CPU
967 Say Y here to allow turning CPUs off and on. CPUs can be
968 controlled through /sys/devices/system/cpu.
969 (Note: power management support will enable this option
970 automatically on SMP systems. )
971 Say N if you want to disable CPU hotplug.
973 config SYS_SUPPORTS_HOTPLUG_CPU
997 config GENERIC_ISA_DMA
999 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1002 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1004 select GENERIC_ISA_DMA
1009 config HOLES_IN_ZONE
1013 # Endianness selection. Sufficiently obscure so many users don't know what to
1014 # answer,so we try hard to limit the available choices. Also the use of a
1015 # choice statement should be more obvious to the user.
1018 prompt "Endianness selection"
1020 Some MIPS machines can be configured for either little or big endian
1021 byte order. These modes require different kernels and a different
1022 Linux distribution. In general there is one preferred byteorder for a
1023 particular system but some systems are just as commonly used in the
1024 one or the other endianness.
1026 config CPU_BIG_ENDIAN
1028 depends on SYS_SUPPORTS_BIG_ENDIAN
1030 config CPU_LITTLE_ENDIAN
1031 bool "Little endian"
1032 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1039 config SYS_SUPPORTS_APM_EMULATION
1042 config SYS_SUPPORTS_BIG_ENDIAN
1045 config SYS_SUPPORTS_LITTLE_ENDIAN
1048 config SYS_SUPPORTS_HUGETLBFS
1050 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1053 config MIPS_HUGE_TLB_SUPPORT
1054 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1077 config PCI_GT64XXX_PCI0
1080 config NO_EXCEPT_FILL
1087 select DMA_NONCOHERENT
1089 select SWAP_IO_SPACE
1090 select SYS_HAS_CPU_R5500
1091 select SYS_SUPPORTS_32BIT_KERNEL
1092 select SYS_SUPPORTS_64BIT_KERNEL
1093 select SYS_SUPPORTS_BIG_ENDIAN
1100 select DMA_NONCOHERENT
1101 select SYS_HAS_CPU_MIPS32_R2
1102 select SYS_SUPPORTS_32BIT_KERNEL
1103 select SYS_SUPPORTS_LITTLE_ENDIAN
1104 select SYS_SUPPORTS_BIG_ENDIAN
1105 select CPU_MIPSR2_IRQ_VI
1111 config SWAP_IO_SPACE
1114 config SGI_HAS_INDYDOG
1126 config SGI_HAS_ZILOG
1129 config SGI_HAS_I8042
1132 config DEFAULT_SGI_PARTITION
1144 config MIPS_L1_CACHE_SHIFT
1146 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL || SOC_RT288X
1147 default "6" if MIPS_CPU_SCACHE
1148 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1151 config HAVE_STD_PC_SERIAL_PORT
1155 bool "ARC console support"
1156 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1160 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1165 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1174 menu "CPU selection"
1180 config CPU_LOONGSON2E
1182 depends on SYS_HAS_CPU_LOONGSON2E
1183 select CPU_LOONGSON2
1185 The Loongson 2E processor implements the MIPS III instruction set
1186 with many extensions.
1188 It has an internal FPGA northbridge, which is compatible to
1191 config CPU_LOONGSON2F
1193 depends on SYS_HAS_CPU_LOONGSON2F
1194 select CPU_LOONGSON2
1195 select ARCH_REQUIRE_GPIOLIB
1197 The Loongson 2F processor implements the MIPS III instruction set
1198 with many extensions.
1200 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1201 have a similar programming interface with FPGA northbridge used in
1204 config CPU_LOONGSON1B
1206 depends on SYS_HAS_CPU_LOONGSON1B
1207 select CPU_LOONGSON1
1209 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1210 release 2 instruction set.
1212 config CPU_MIPS32_R1
1213 bool "MIPS32 Release 1"
1214 depends on SYS_HAS_CPU_MIPS32_R1
1215 select CPU_HAS_PREFETCH
1216 select CPU_SUPPORTS_32BIT_KERNEL
1217 select CPU_SUPPORTS_HIGHMEM
1219 Choose this option to build a kernel for release 1 or later of the
1220 MIPS32 architecture. Most modern embedded systems with a 32-bit
1221 MIPS processor are based on a MIPS32 processor. If you know the
1222 specific type of processor in your system, choose those that one
1223 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1224 Release 2 of the MIPS32 architecture is available since several
1225 years so chances are you even have a MIPS32 Release 2 processor
1226 in which case you should choose CPU_MIPS32_R2 instead for better
1229 config CPU_MIPS32_R2
1230 bool "MIPS32 Release 2"
1231 depends on SYS_HAS_CPU_MIPS32_R2
1232 select CPU_HAS_PREFETCH
1233 select CPU_SUPPORTS_32BIT_KERNEL
1234 select CPU_SUPPORTS_HIGHMEM
1237 Choose this option to build a kernel for release 2 or later of the
1238 MIPS32 architecture. Most modern embedded systems with a 32-bit
1239 MIPS processor are based on a MIPS32 processor. If you know the
1240 specific type of processor in your system, choose those that one
1241 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1243 config CPU_MIPS64_R1
1244 bool "MIPS64 Release 1"
1245 depends on SYS_HAS_CPU_MIPS64_R1
1246 select CPU_HAS_PREFETCH
1247 select CPU_SUPPORTS_32BIT_KERNEL
1248 select CPU_SUPPORTS_64BIT_KERNEL
1249 select CPU_SUPPORTS_HIGHMEM
1250 select CPU_SUPPORTS_HUGEPAGES
1252 Choose this option to build a kernel for release 1 or later of the
1253 MIPS64 architecture. Many modern embedded systems with a 64-bit
1254 MIPS processor are based on a MIPS64 processor. If you know the
1255 specific type of processor in your system, choose those that one
1256 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1257 Release 2 of the MIPS64 architecture is available since several
1258 years so chances are you even have a MIPS64 Release 2 processor
1259 in which case you should choose CPU_MIPS64_R2 instead for better
1262 config CPU_MIPS64_R2
1263 bool "MIPS64 Release 2"
1264 depends on SYS_HAS_CPU_MIPS64_R2
1265 select CPU_HAS_PREFETCH
1266 select CPU_SUPPORTS_32BIT_KERNEL
1267 select CPU_SUPPORTS_64BIT_KERNEL
1268 select CPU_SUPPORTS_HIGHMEM
1269 select CPU_SUPPORTS_HUGEPAGES
1271 Choose this option to build a kernel for release 2 or later of the
1272 MIPS64 architecture. Many modern embedded systems with a 64-bit
1273 MIPS processor are based on a MIPS64 processor. If you know the
1274 specific type of processor in your system, choose those that one
1275 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1279 depends on SYS_HAS_CPU_R3000
1281 select CPU_SUPPORTS_32BIT_KERNEL
1282 select CPU_SUPPORTS_HIGHMEM
1284 Please make sure to pick the right CPU type. Linux/MIPS is not
1285 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1286 *not* work on R4000 machines and vice versa. However, since most
1287 of the supported machines have an R4000 (or similar) CPU, R4x00
1288 might be a safe bet. If the resulting kernel does not work,
1289 try to recompile with R3000.
1293 depends on SYS_HAS_CPU_TX39XX
1294 select CPU_SUPPORTS_32BIT_KERNEL
1298 depends on SYS_HAS_CPU_VR41XX
1299 select CPU_SUPPORTS_32BIT_KERNEL
1300 select CPU_SUPPORTS_64BIT_KERNEL
1302 The options selects support for the NEC VR4100 series of processors.
1303 Only choose this option if you have one of these processors as a
1304 kernel built with this option will not run on any other type of
1305 processor or vice versa.
1309 depends on SYS_HAS_CPU_R4300
1310 select CPU_SUPPORTS_32BIT_KERNEL
1311 select CPU_SUPPORTS_64BIT_KERNEL
1313 MIPS Technologies R4300-series processors.
1317 depends on SYS_HAS_CPU_R4X00
1318 select CPU_SUPPORTS_32BIT_KERNEL
1319 select CPU_SUPPORTS_64BIT_KERNEL
1320 select CPU_SUPPORTS_HUGEPAGES
1322 MIPS Technologies R4000-series processors other than 4300, including
1323 the R4000, R4400, R4600, and 4700.
1327 depends on SYS_HAS_CPU_TX49XX
1328 select CPU_HAS_PREFETCH
1329 select CPU_SUPPORTS_32BIT_KERNEL
1330 select CPU_SUPPORTS_64BIT_KERNEL
1331 select CPU_SUPPORTS_HUGEPAGES
1335 depends on SYS_HAS_CPU_R5000
1336 select CPU_SUPPORTS_32BIT_KERNEL
1337 select CPU_SUPPORTS_64BIT_KERNEL
1338 select CPU_SUPPORTS_HUGEPAGES
1340 MIPS Technologies R5000-series processors other than the Nevada.
1344 depends on SYS_HAS_CPU_R5432
1345 select CPU_SUPPORTS_32BIT_KERNEL
1346 select CPU_SUPPORTS_64BIT_KERNEL
1347 select CPU_SUPPORTS_HUGEPAGES
1351 depends on SYS_HAS_CPU_R5500
1352 select CPU_SUPPORTS_32BIT_KERNEL
1353 select CPU_SUPPORTS_64BIT_KERNEL
1354 select CPU_SUPPORTS_HUGEPAGES
1356 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1361 depends on SYS_HAS_CPU_R6000
1362 select CPU_SUPPORTS_32BIT_KERNEL
1364 MIPS Technologies R6000 and R6000A series processors. Note these
1365 processors are extremely rare and the support for them is incomplete.
1369 depends on SYS_HAS_CPU_NEVADA
1370 select CPU_SUPPORTS_32BIT_KERNEL
1371 select CPU_SUPPORTS_64BIT_KERNEL
1372 select CPU_SUPPORTS_HUGEPAGES
1374 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1378 depends on SYS_HAS_CPU_R8000
1379 select CPU_HAS_PREFETCH
1380 select CPU_SUPPORTS_64BIT_KERNEL
1382 MIPS Technologies R8000 processors. Note these processors are
1383 uncommon and the support for them is incomplete.
1387 depends on SYS_HAS_CPU_R10000
1388 select CPU_HAS_PREFETCH
1389 select CPU_SUPPORTS_32BIT_KERNEL
1390 select CPU_SUPPORTS_64BIT_KERNEL
1391 select CPU_SUPPORTS_HIGHMEM
1392 select CPU_SUPPORTS_HUGEPAGES
1394 MIPS Technologies R10000-series processors.
1398 depends on SYS_HAS_CPU_RM7000
1399 select CPU_HAS_PREFETCH
1400 select CPU_SUPPORTS_32BIT_KERNEL
1401 select CPU_SUPPORTS_64BIT_KERNEL
1402 select CPU_SUPPORTS_HIGHMEM
1403 select CPU_SUPPORTS_HUGEPAGES
1407 depends on SYS_HAS_CPU_SB1
1408 select CPU_SUPPORTS_32BIT_KERNEL
1409 select CPU_SUPPORTS_64BIT_KERNEL
1410 select CPU_SUPPORTS_HIGHMEM
1411 select CPU_SUPPORTS_HUGEPAGES
1412 select WEAK_ORDERING
1414 config CPU_CAVIUM_OCTEON
1415 bool "Cavium Octeon processor"
1416 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1417 select ARCH_SPARSEMEM_ENABLE
1418 select CPU_HAS_PREFETCH
1419 select CPU_SUPPORTS_64BIT_KERNEL
1420 select SYS_SUPPORTS_SMP
1421 select NR_CPUS_DEFAULT_16
1422 select WEAK_ORDERING
1423 select CPU_SUPPORTS_HIGHMEM
1424 select CPU_SUPPORTS_HUGEPAGES
1427 select USB_EHCI_BIG_ENDIAN_MMIO
1429 The Cavium Octeon processor is a highly integrated chip containing
1430 many ethernet hardware widgets for networking tasks. The processor
1431 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1432 Full details can be found at http://www.caviumnetworks.com.
1434 config CPU_BMIPS3300
1436 depends on SYS_HAS_CPU_BMIPS3300
1439 Broadcom BMIPS3300 processors.
1441 config CPU_BMIPS4350
1443 depends on SYS_HAS_CPU_BMIPS4350
1445 select SYS_SUPPORTS_SMP
1446 select SYS_SUPPORTS_HOTPLUG_CPU
1448 Broadcom BMIPS4350 ("VIPER") processors.
1450 config CPU_BMIPS4380
1452 depends on SYS_HAS_CPU_BMIPS4380
1454 select SYS_SUPPORTS_SMP
1455 select SYS_SUPPORTS_HOTPLUG_CPU
1457 Broadcom BMIPS4380 processors.
1459 config CPU_BMIPS5000
1461 depends on SYS_HAS_CPU_BMIPS5000
1463 select CPU_SUPPORTS_HIGHMEM
1464 select MIPS_CPU_SCACHE
1465 select SYS_SUPPORTS_SMP
1466 select SYS_SUPPORTS_HOTPLUG_CPU
1468 Broadcom BMIPS5000 processors.
1471 bool "Netlogic XLR SoC"
1472 depends on SYS_HAS_CPU_XLR
1473 select CPU_SUPPORTS_32BIT_KERNEL
1474 select CPU_SUPPORTS_64BIT_KERNEL
1475 select CPU_SUPPORTS_HIGHMEM
1476 select CPU_SUPPORTS_HUGEPAGES
1477 select WEAK_ORDERING
1478 select WEAK_REORDERING_BEYOND_LLSC
1480 Netlogic Microsystems XLR/XLS processors.
1483 bool "Netlogic XLP SoC"
1484 depends on SYS_HAS_CPU_XLP
1485 select CPU_SUPPORTS_32BIT_KERNEL
1486 select CPU_SUPPORTS_64BIT_KERNEL
1487 select CPU_SUPPORTS_HIGHMEM
1488 select WEAK_ORDERING
1489 select WEAK_REORDERING_BEYOND_LLSC
1490 select CPU_HAS_PREFETCH
1493 Netlogic Microsystems XLP processors.
1497 config CPU_NOP_WORKAROUNDS
1500 config CPU_JUMP_WORKAROUNDS
1503 config CPU_LOONGSON2F_WORKAROUNDS
1504 bool "Loongson 2F Workarounds"
1506 select CPU_NOP_WORKAROUNDS
1507 select CPU_JUMP_WORKAROUNDS
1509 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1510 require workarounds. Without workarounds the system may hang
1511 unexpectedly. For more information please refer to the gas
1512 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1514 Loongson 2F03 and later have fixed these issues and no workarounds
1515 are needed. The workarounds have no significant side effect on them
1516 but may decrease the performance of the system so this option should
1517 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1520 If unsure, please say Y.
1521 endif # CPU_LOONGSON2F
1523 config SYS_SUPPORTS_ZBOOT
1525 select HAVE_KERNEL_GZIP
1526 select HAVE_KERNEL_BZIP2
1527 select HAVE_KERNEL_LZMA
1528 select HAVE_KERNEL_LZO
1530 config SYS_SUPPORTS_ZBOOT_UART16550
1532 select SYS_SUPPORTS_ZBOOT
1534 config CPU_LOONGSON2
1536 select CPU_SUPPORTS_32BIT_KERNEL
1537 select CPU_SUPPORTS_64BIT_KERNEL
1538 select CPU_SUPPORTS_HIGHMEM
1539 select CPU_SUPPORTS_HUGEPAGES
1541 config CPU_LOONGSON1
1545 select CPU_HAS_PREFETCH
1546 select CPU_SUPPORTS_32BIT_KERNEL
1547 select CPU_SUPPORTS_HIGHMEM
1552 select CPU_SUPPORTS_32BIT_KERNEL
1553 select DMA_NONCOHERENT
1555 select SWAP_IO_SPACE
1556 select WEAK_ORDERING
1558 config SYS_HAS_CPU_LOONGSON2E
1561 config SYS_HAS_CPU_LOONGSON2F
1563 select CPU_SUPPORTS_CPUFREQ
1564 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1565 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1567 config SYS_HAS_CPU_LOONGSON1B
1570 config SYS_HAS_CPU_MIPS32_R1
1573 config SYS_HAS_CPU_MIPS32_R2
1576 config SYS_HAS_CPU_MIPS64_R1
1579 config SYS_HAS_CPU_MIPS64_R2
1582 config SYS_HAS_CPU_R3000
1585 config SYS_HAS_CPU_TX39XX
1588 config SYS_HAS_CPU_VR41XX
1591 config SYS_HAS_CPU_R4300
1594 config SYS_HAS_CPU_R4X00
1597 config SYS_HAS_CPU_TX49XX
1600 config SYS_HAS_CPU_R5000
1603 config SYS_HAS_CPU_R5432
1606 config SYS_HAS_CPU_R5500
1609 config SYS_HAS_CPU_R6000
1612 config SYS_HAS_CPU_NEVADA
1615 config SYS_HAS_CPU_R8000
1618 config SYS_HAS_CPU_R10000
1621 config SYS_HAS_CPU_RM7000
1624 config SYS_HAS_CPU_SB1
1627 config SYS_HAS_CPU_CAVIUM_OCTEON
1630 config SYS_HAS_CPU_BMIPS3300
1633 config SYS_HAS_CPU_BMIPS4350
1636 config SYS_HAS_CPU_BMIPS4380
1639 config SYS_HAS_CPU_BMIPS5000
1642 config SYS_HAS_CPU_XLR
1645 config SYS_HAS_CPU_XLP
1649 # CPU may reorder R->R, R->W, W->R, W->W
1650 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1652 config WEAK_ORDERING
1656 # CPU may reorder reads and writes beyond LL/SC
1657 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1659 config WEAK_REORDERING_BEYOND_LLSC
1664 # These two indicate any level of the MIPS32 and MIPS64 architecture
1668 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1672 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1675 # These two indicate the revision of the architecture, either Release 1 or Release 2
1679 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1683 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1685 config SYS_SUPPORTS_32BIT_KERNEL
1687 config SYS_SUPPORTS_64BIT_KERNEL
1689 config CPU_SUPPORTS_32BIT_KERNEL
1691 config CPU_SUPPORTS_64BIT_KERNEL
1693 config CPU_SUPPORTS_CPUFREQ
1695 config CPU_SUPPORTS_ADDRWINCFG
1697 config CPU_SUPPORTS_HUGEPAGES
1699 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1701 config MIPS_PGD_C0_CONTEXT
1703 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1706 # Set to y for ptrace access to watch registers.
1708 config HARDWARE_WATCHPOINTS
1710 default y if CPU_MIPSR1 || CPU_MIPSR2
1715 prompt "Kernel code model"
1717 You should only select this option if you have a workload that
1718 actually benefits from 64-bit processing or if your machine has
1719 large memory. You will only be presented a single option in this
1720 menu if your system does not support both 32-bit and 64-bit kernels.
1723 bool "32-bit kernel"
1724 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1727 Select this option if you want to build a 32-bit kernel.
1729 bool "64-bit kernel"
1730 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1732 Select this option if you want to build a 64-bit kernel.
1737 bool "KVM Guest Kernel"
1739 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1741 config KVM_HOST_FREQ
1742 int "KVM Host Processor Frequency (MHz)"
1743 depends on KVM_GUEST
1746 Select this option if building a guest kernel for KVM to skip
1747 RTC emulation when determining guest CPU Frequency. Instead, the guest
1748 processor frequency is automatically derived from the host frequency.
1751 prompt "Kernel page size"
1752 default PAGE_SIZE_4KB
1754 config PAGE_SIZE_4KB
1756 depends on !CPU_LOONGSON2
1758 This option select the standard 4kB Linux page size. On some
1759 R3000-family processors this is the only available page size. Using
1760 4kB page size will minimize memory consumption and is therefore
1761 recommended for low memory systems.
1763 config PAGE_SIZE_8KB
1765 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1767 Using 8kB page size will result in higher performance kernel at
1768 the price of higher memory consumption. This option is available
1769 only on R8000 and cnMIPS processors. Note that you will need a
1770 suitable Linux distribution to support this.
1772 config PAGE_SIZE_16KB
1774 depends on !CPU_R3000 && !CPU_TX39XX
1776 Using 16kB page size will result in higher performance kernel at
1777 the price of higher memory consumption. This option is available on
1778 all non-R3000 family processors. Note that you will need a suitable
1779 Linux distribution to support this.
1781 config PAGE_SIZE_32KB
1783 depends on CPU_CAVIUM_OCTEON
1785 Using 32kB page size will result in higher performance kernel at
1786 the price of higher memory consumption. This option is available
1787 only on cnMIPS cores. Note that you will need a suitable Linux
1788 distribution to support this.
1790 config PAGE_SIZE_64KB
1792 depends on !CPU_R3000 && !CPU_TX39XX
1794 Using 64kB page size will result in higher performance kernel at
1795 the price of higher memory consumption. This option is available on
1796 all non-R3000 family processor. Not that at the time of this
1797 writing this option is still high experimental.
1801 config FORCE_MAX_ZONEORDER
1802 int "Maximum zone order"
1803 range 14 64 if HUGETLB_PAGE && PAGE_SIZE_64KB
1804 default "14" if HUGETLB_PAGE && PAGE_SIZE_64KB
1805 range 13 64 if HUGETLB_PAGE && PAGE_SIZE_32KB
1806 default "13" if HUGETLB_PAGE && PAGE_SIZE_32KB
1807 range 12 64 if HUGETLB_PAGE && PAGE_SIZE_16KB
1808 default "12" if HUGETLB_PAGE && PAGE_SIZE_16KB
1812 The kernel memory allocator divides physically contiguous memory
1813 blocks into "zones", where each zone is a power of two number of
1814 pages. This option selects the largest power of two that the kernel
1815 keeps in the memory allocator. If you need to allocate very large
1816 blocks of physically contiguous memory, then you may need to
1817 increase this value.
1819 This config option is actually maximum order plus one. For example,
1820 a value of 11 means that the largest free memory block is 2^10 pages.
1822 The page size is not necessarily 4KB. Keep this in mind
1823 when choosing a value for this option.
1826 bool "Use GIC global counter for clock events"
1827 depends on IRQ_GIC && !(MIPS_SEAD3 || MIPS_MT_SMTC)
1829 Use the GIC global counter for the clock events. The R4K clock
1830 event driver is always present, so if the platform ends up not
1831 detecting a GIC, it will fall back to the R4K timer for the
1832 generation of clock events.
1837 config IP22_CPU_SCACHE
1842 # Support for a MIPS32 / MIPS64 style S-caches
1844 config MIPS_CPU_SCACHE
1848 config R5000_CPU_SCACHE
1852 config RM7000_CPU_SCACHE
1856 config SIBYTE_DMA_PAGEOPS
1857 bool "Use DMA to clear/copy pages"
1860 Instead of using the CPU to zero and copy pages, use a Data Mover
1861 channel. These DMA channels are otherwise unused by the standard
1862 SiByte Linux port. Seems to give a small performance benefit.
1864 config CPU_HAS_PREFETCH
1867 config CPU_GENERIC_DUMP_TLB
1869 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
1873 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1875 config CPU_R4K_CACHE_TLB
1877 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1880 prompt "MIPS MT options"
1882 config MIPS_MT_DISABLED
1883 bool "Disable multithreading support."
1885 Use this option if your workload can't take advantage of
1886 MIPS hardware multithreading support. On systems that don't have
1887 the option of an MT-enabled processor this option will be the only
1888 option in this menu.
1891 bool "Use 1 TC on each available VPE for SMP"
1892 depends on SYS_SUPPORTS_MULTITHREADING
1893 select CPU_MIPSR2_IRQ_VI
1894 select CPU_MIPSR2_IRQ_EI
1896 select NR_CPUS_DEFAULT_2
1898 select SYS_SUPPORTS_SCHED_SMT if SMP
1899 select SYS_SUPPORTS_SMP
1901 select MIPS_PERF_SHARED_TC_COUNTERS
1903 This is a kernel model which is known a VSMP but lately has been
1904 marketesed into SMVP.
1905 Virtual SMP uses the processor's VPEs to implement virtual
1906 processors. In currently available configuration of the 34K processor
1907 this allows for a dual processor. Both processors will share the same
1908 primary caches; each will obtain the half of the TLB for it's own
1909 exclusive use. For a layman this model can be described as similar to
1910 what Intel calls Hyperthreading.
1912 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1915 bool "SMTC: Use all TCs on all VPEs for SMP"
1916 depends on CPU_MIPS32_R2
1917 #depends on CPU_MIPS64_R2 # once there is hardware ...
1918 depends on SYS_SUPPORTS_MULTITHREADING
1919 select CPU_MIPSR2_IRQ_VI
1920 select CPU_MIPSR2_IRQ_EI
1922 select NR_CPUS_DEFAULT_8
1924 select SYS_SUPPORTS_SMP
1927 This is a kernel model which is known a SMTC or lately has been
1928 marketesed into SMVP.
1929 is presenting the available TC's of the core as processors to Linux.
1930 On currently available 34K processors this means a Linux system will
1931 see up to 5 processors. The implementation of the SMTC kernel differs
1932 significantly from VSMP and cannot efficiently coexist in the same
1933 kernel binary so the choice between VSMP and SMTC is a compile time
1936 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1944 bool "SMT (multithreading) scheduler support"
1945 depends on SYS_SUPPORTS_SCHED_SMT
1948 SMT scheduler support improves the CPU scheduler's decision making
1949 when dealing with MIPS MT enabled cores at a cost of slightly
1950 increased overhead in some places. If unsure say N here.
1952 config SYS_SUPPORTS_SCHED_SMT
1955 config SYS_SUPPORTS_MULTITHREADING
1958 config MIPS_MT_FPAFF
1959 bool "Dynamic FPU affinity for FP-intensive threads"
1961 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1963 config MIPS_VPE_LOADER
1964 bool "VPE loader support."
1965 depends on SYS_SUPPORTS_MULTITHREADING
1966 select CPU_MIPSR2_IRQ_VI
1967 select CPU_MIPSR2_IRQ_EI
1970 Includes a loader for loading an elf relocatable object
1971 onto another VPE and running it.
1973 config MIPS_MT_SMTC_IM_BACKSTOP
1974 bool "Use per-TC register bits as backstop for inhibited IM bits"
1975 depends on MIPS_MT_SMTC
1978 To support multiple TC microthreads acting as "CPUs" within
1979 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1980 during interrupt handling. To support legacy drivers and interrupt
1981 controller management code, SMTC has a "backstop" to track and
1982 if necessary restore the interrupt mask. This has some performance
1983 impact on interrupt service overhead.
1985 config MIPS_MT_SMTC_IRQAFF
1986 bool "Support IRQ affinity API"
1987 depends on MIPS_MT_SMTC
1990 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1991 for SMTC Linux kernel. Requires platform support, of which
1992 an example can be found in the MIPS kernel i8259 and Malta
1993 platform code. Adds some overhead to interrupt dispatch, and
1994 should be used only if you know what you are doing.
1996 config MIPS_VPE_LOADER_TOM
1997 bool "Load VPE program into memory hidden from linux"
1998 depends on MIPS_VPE_LOADER
2001 The loader can use memory that is present but has been hidden from
2002 Linux using the kernel command line option "mem=xxMB". It's up to
2003 you to ensure the amount you put in the option and the space your
2004 program requires is less or equal to the amount physically present.
2006 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
2007 config MIPS_VPE_APSP_API
2008 bool "Enable support for AP/SP API (RTLX)"
2009 depends on MIPS_VPE_LOADER
2013 bool "MIPS CMP framework support"
2014 depends on SYS_SUPPORTS_MIPS_CMP
2016 select SYS_SUPPORTS_SMP
2017 select SYS_SUPPORTS_SCHED_SMT if SMP
2018 select WEAK_ORDERING
2021 This is a placeholder option for the GCMP work. It will need to
2022 be handled differently...
2024 config SB1_PASS_1_WORKAROUNDS
2026 depends on CPU_SB1_PASS_1
2029 config SB1_PASS_2_WORKAROUNDS
2031 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2034 config SB1_PASS_2_1_WORKAROUNDS
2036 depends on CPU_SB1 && CPU_SB1_PASS_2
2040 config 64BIT_PHYS_ADDR
2043 config ARCH_PHYS_ADDR_T_64BIT
2044 def_bool 64BIT_PHYS_ADDR
2046 config CPU_HAS_SMARTMIPS
2047 depends on SYS_SUPPORTS_SMARTMIPS
2048 bool "Support for the SmartMIPS ASE"
2050 SmartMIPS is a extension of the MIPS32 architecture aimed at
2051 increased security at both hardware and software level for
2052 smartcards. Enabling this option will allow proper use of the
2053 SmartMIPS instructions by Linux applications. However a kernel with
2054 this option will not work on a MIPS core without SmartMIPS core. If
2055 you don't know you probably don't have SmartMIPS and should say N
2058 config CPU_MICROMIPS
2059 depends on SYS_SUPPORTS_MICROMIPS
2060 bool "Build kernel using microMIPS ISA"
2062 When this option is enabled the kernel will be built using the
2072 # Vectored interrupt mode is an R2 feature
2074 config CPU_MIPSR2_IRQ_VI
2078 # Extended interrupt mode is an R2 feature
2080 config CPU_MIPSR2_IRQ_EI
2085 depends on !CPU_R3000
2091 config CPU_DADDI_WORKAROUNDS
2094 config CPU_R4000_WORKAROUNDS
2096 select CPU_R4400_WORKAROUNDS
2098 config CPU_R4400_WORKAROUNDS
2102 # - Highmem only makes sense for the 32-bit kernel.
2103 # - The current highmem code will only work properly on physically indexed
2104 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2105 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2106 # moment we protect the user and offer the highmem option only on machines
2107 # where it's known to be safe. This will not offer highmem on a few systems
2108 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2109 # indexed CPUs but we're playing safe.
2110 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2111 # know they might have memory configurations that could make use of highmem
2115 bool "High Memory Support"
2116 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2118 config CPU_SUPPORTS_HIGHMEM
2121 config SYS_SUPPORTS_HIGHMEM
2124 config SYS_SUPPORTS_SMARTMIPS
2127 config SYS_SUPPORTS_MICROMIPS
2130 config ARCH_FLATMEM_ENABLE
2132 depends on !NUMA && !CPU_LOONGSON2
2134 config ARCH_DISCONTIGMEM_ENABLE
2136 default y if SGI_IP27
2138 Say Y to support efficient handling of discontiguous physical memory,
2139 for architectures which are either NUMA (Non-Uniform Memory Access)
2140 or have huge holes in the physical address space for other reasons.
2141 See <file:Documentation/vm/numa> for more.
2143 config ARCH_SPARSEMEM_ENABLE
2145 select SPARSEMEM_STATIC
2149 depends on SYS_SUPPORTS_NUMA
2151 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2152 Access). This option improves performance on systems with more
2153 than two nodes; on two node systems it is generally better to
2154 leave it disabled; on single node systems disable this option
2157 config SYS_SUPPORTS_NUMA
2163 depends on NEED_MULTIPLE_NODES
2165 config HW_PERF_EVENTS
2166 bool "Enable hardware performance counter support for perf events"
2167 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2170 Enable hardware performance counter support for perf events. If
2171 disabled, perf events will use software events only.
2176 bool "Multi-Processing support"
2177 depends on SYS_SUPPORTS_SMP
2178 select USE_GENERIC_SMP_HELPERS
2180 This enables support for systems with more than one CPU. If you have
2181 a system with only one CPU, like most personal computers, say N. If
2182 you have a system with more than one CPU, say Y.
2184 If you say N here, the kernel will run on single and multiprocessor
2185 machines, but will use only one CPU of a multiprocessor machine. If
2186 you say Y here, the kernel will run on many, but not all,
2187 singleprocessor machines. On a singleprocessor machine, the kernel
2188 will run faster if you say N here.
2190 People using multiprocessor machines who say Y here should also say
2191 Y to "Enhanced Real Time Clock Support", below.
2193 See also the SMP-HOWTO available at
2194 <http://www.tldp.org/docs.html#howto>.
2196 If you don't know what to do here, say N.
2201 config SYS_SUPPORTS_MIPS_CMP
2204 config SYS_SUPPORTS_SMP
2207 config NR_CPUS_DEFAULT_1
2210 config NR_CPUS_DEFAULT_2
2213 config NR_CPUS_DEFAULT_4
2216 config NR_CPUS_DEFAULT_8
2219 config NR_CPUS_DEFAULT_16
2222 config NR_CPUS_DEFAULT_32
2225 config NR_CPUS_DEFAULT_64
2229 int "Maximum number of CPUs (2-64)"
2230 range 1 64 if NR_CPUS_DEFAULT_1
2232 default "1" if NR_CPUS_DEFAULT_1
2233 default "2" if NR_CPUS_DEFAULT_2
2234 default "4" if NR_CPUS_DEFAULT_4
2235 default "8" if NR_CPUS_DEFAULT_8
2236 default "16" if NR_CPUS_DEFAULT_16
2237 default "32" if NR_CPUS_DEFAULT_32
2238 default "64" if NR_CPUS_DEFAULT_64
2240 This allows you to specify the maximum number of CPUs which this
2241 kernel will support. The maximum supported value is 32 for 32-bit
2242 kernel and 64 for 64-bit kernels; the minimum value which makes
2243 sense is 1 for Qemu (useful only for kernel debugging purposes)
2244 and 2 for all others.
2246 This is purely to save memory - each supported CPU adds
2247 approximately eight kilobytes to the kernel image. For best
2248 performance should round up your number of processors to the next
2251 config MIPS_PERF_SHARED_TC_COUNTERS
2255 # Timer Interrupt Frequency Configuration
2259 prompt "Timer frequency"
2262 Allows the configuration of the timer frequency.
2265 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2268 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2271 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2274 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2277 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2280 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2283 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2287 config SYS_SUPPORTS_48HZ
2290 config SYS_SUPPORTS_100HZ
2293 config SYS_SUPPORTS_128HZ
2296 config SYS_SUPPORTS_250HZ
2299 config SYS_SUPPORTS_256HZ
2302 config SYS_SUPPORTS_1000HZ
2305 config SYS_SUPPORTS_1024HZ
2308 config SYS_SUPPORTS_ARBIT_HZ
2310 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2311 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2312 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2313 !SYS_SUPPORTS_1024HZ
2318 default 100 if HZ_100
2319 default 128 if HZ_128
2320 default 250 if HZ_250
2321 default 256 if HZ_256
2322 default 1000 if HZ_1000
2323 default 1024 if HZ_1024
2325 source "kernel/Kconfig.preempt"
2328 bool "Kexec system call"
2330 kexec is a system call that implements the ability to shutdown your
2331 current kernel, and to start another kernel. It is like a reboot
2332 but it is independent of the system firmware. And like a reboot
2333 you can start any kernel with it, not just Linux.
2335 The name comes from the similarity to the exec system call.
2337 It is an ongoing process to be certain the hardware in a machine
2338 is properly shutdown, so do not be surprised if this code does not
2339 initially work for you. It may help to enable device hotplugging
2340 support. As of this writing the exact hardware interface is
2341 strongly in flux, so no good recommendation can be made.
2344 bool "Kernel crash dumps"
2346 Generate crash dump after being started by kexec.
2347 This should be normally only set in special crash dump kernels
2348 which are loaded in the main kernel with kexec-tools into
2349 a specially reserved region and then later executed after
2350 a crash by kdump/kexec. The crash dump kernel must be compiled
2351 to a memory address not used by the main kernel or firmware using
2354 config PHYSICAL_START
2355 hex "Physical address where the kernel is loaded"
2356 default "0xffffffff84000000" if 64BIT
2357 default "0x84000000" if 32BIT
2358 depends on CRASH_DUMP
2360 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2361 If you plan to use kernel for capturing the crash dump change
2362 this value to start of the reserved region (the "X" value as
2363 specified in the "crashkernel=YM@XM" command line boot parameter
2364 passed to the panic-ed kernel).
2367 bool "Enable seccomp to safely compute untrusted bytecode"
2371 This kernel feature is useful for number crunching applications
2372 that may need to compute untrusted bytecode during their
2373 execution. By using pipes or other transports made available to
2374 the process as file descriptors supporting the read/write
2375 syscalls, it's possible to isolate those applications in
2376 their own address space using seccomp. Once seccomp is
2377 enabled via /proc/<pid>/seccomp, it cannot be disabled
2378 and the task is only allowed to execute a few safe syscalls
2379 defined by each seccomp mode.
2381 If unsure, say Y. Only embedded should say N here.
2386 select OF_EARLY_FLATTREE
2391 config LOCKDEP_SUPPORT
2395 config STACKTRACE_SUPPORT
2399 source "init/Kconfig"
2401 source "kernel/Kconfig.freezer"
2403 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2411 bool "Support for PCI controller"
2412 depends on HW_HAS_PCI
2414 select GENERIC_PCI_IOMAP
2415 select NO_GENERIC_PCI_IOPORT_MAP
2417 Find out whether you have a PCI motherboard. PCI is the name of a
2418 bus system, i.e. the way the CPU talks to the other stuff inside
2419 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2425 source "drivers/pci/Kconfig"
2427 source "drivers/pci/pcie/Kconfig"
2430 # ISA support is now enabled via select. Too many systems still have the one
2431 # or other ISA chip on the board that users don't know about so don't expect
2432 # users to choose the right thing ...
2439 depends on HW_HAS_EISA
2441 select GENERIC_ISA_DMA
2443 The Extended Industry Standard Architecture (EISA) bus was
2444 developed as an open alternative to the IBM MicroChannel bus.
2446 The EISA bus provided some of the features of the IBM MicroChannel
2447 bus while maintaining backward compatibility with cards made for
2448 the older ISA bus. The EISA bus saw limited use between 1988 and
2449 1995 when it was made obsolete by the PCI bus.
2451 Say Y here if you are building a kernel for an EISA-based machine.
2455 source "drivers/eisa/Kconfig"
2458 bool "TURBOchannel support"
2459 depends on MACH_DECSTATION
2461 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2462 processors. TURBOchannel programming specifications are available
2464 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2466 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2467 Linux driver support status is documented at:
2468 <http://www.linux-mips.org/wiki/DECstation>
2478 select MIPS_EXTERNAL_TIMER
2483 source "drivers/pcmcia/Kconfig"
2485 source "drivers/pci/hotplug/Kconfig"
2488 bool "RapidIO support"
2492 If you say Y here, the kernel will include drivers and
2493 infrastructure code to support RapidIO interconnect devices.
2495 source "drivers/rapidio/Kconfig"
2499 menu "Executable file formats"
2501 source "fs/Kconfig.binfmt"
2506 config MIPS32_COMPAT
2507 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2510 Select this option if you want Linux/MIPS 32-bit binary
2511 compatibility. Since all software available for Linux/MIPS is
2512 currently 32-bit you should say Y here.
2516 depends on MIPS32_COMPAT
2517 select ARCH_WANT_OLD_COMPAT_IPC
2520 config SYSVIPC_COMPAT
2522 depends on COMPAT && SYSVIPC
2526 bool "Kernel support for o32 binaries"
2527 depends on MIPS32_COMPAT
2529 Select this option if you want to run o32 binaries. These are pure
2530 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2531 existing binaries are in this format.
2536 bool "Kernel support for n32 binaries"
2537 depends on MIPS32_COMPAT
2539 Select this option if you want to run n32 binaries. These are
2540 64-bit binaries using 32-bit quantities for addressing and certain
2541 data that would normally be 64-bit. They are used in special
2548 default y if MIPS32_O32 || MIPS32_N32
2552 menu "Power management options"
2554 config ARCH_HIBERNATION_POSSIBLE
2556 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2558 config ARCH_SUSPEND_POSSIBLE
2560 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2562 source "kernel/power/Kconfig"
2566 config MIPS_EXTERNAL_TIMER
2569 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2570 menu "CPU Power Management"
2571 source "drivers/cpufreq/Kconfig"
2575 source "net/Kconfig"
2577 source "drivers/Kconfig"
2579 source "drivers/firmware/Kconfig"
2583 source "arch/mips/Kconfig.debug"
2585 source "security/Kconfig"
2587 source "crypto/Kconfig"
2589 source "lib/Kconfig"
2591 source "arch/mips/kvm/Kconfig"