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
1040 config SYS_SUPPORTS_APM_EMULATION
1043 config SYS_SUPPORTS_BIG_ENDIAN
1046 config SYS_SUPPORTS_LITTLE_ENDIAN
1049 config SYS_SUPPORTS_HUGETLBFS
1051 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1054 config MIPS_HUGE_TLB_SUPPORT
1055 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1078 config PCI_GT64XXX_PCI0
1081 config NO_EXCEPT_FILL
1088 select DMA_NONCOHERENT
1090 select SWAP_IO_SPACE
1091 select SYS_HAS_CPU_R5500
1092 select SYS_SUPPORTS_32BIT_KERNEL
1093 select SYS_SUPPORTS_64BIT_KERNEL
1094 select SYS_SUPPORTS_BIG_ENDIAN
1101 select DMA_NONCOHERENT
1102 select SYS_HAS_CPU_MIPS32_R2
1103 select SYS_SUPPORTS_32BIT_KERNEL
1104 select SYS_SUPPORTS_LITTLE_ENDIAN
1105 select SYS_SUPPORTS_BIG_ENDIAN
1106 select CPU_MIPSR2_IRQ_VI
1112 config SWAP_IO_SPACE
1115 config SGI_HAS_INDYDOG
1127 config SGI_HAS_ZILOG
1130 config SGI_HAS_I8042
1133 config DEFAULT_SGI_PARTITION
1145 config MIPS_L1_CACHE_SHIFT
1147 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL || SOC_RT288X
1148 default "6" if MIPS_CPU_SCACHE
1149 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1152 config HAVE_STD_PC_SERIAL_PORT
1156 bool "ARC console support"
1157 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1161 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1166 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1175 menu "CPU selection"
1181 config CPU_LOONGSON2E
1183 depends on SYS_HAS_CPU_LOONGSON2E
1184 select CPU_LOONGSON2
1186 The Loongson 2E processor implements the MIPS III instruction set
1187 with many extensions.
1189 It has an internal FPGA northbridge, which is compatible to
1192 config CPU_LOONGSON2F
1194 depends on SYS_HAS_CPU_LOONGSON2F
1195 select CPU_LOONGSON2
1196 select ARCH_REQUIRE_GPIOLIB
1198 The Loongson 2F processor implements the MIPS III instruction set
1199 with many extensions.
1201 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1202 have a similar programming interface with FPGA northbridge used in
1205 config CPU_LOONGSON1B
1207 depends on SYS_HAS_CPU_LOONGSON1B
1208 select CPU_LOONGSON1
1210 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1211 release 2 instruction set.
1213 config CPU_MIPS32_R1
1214 bool "MIPS32 Release 1"
1215 depends on SYS_HAS_CPU_MIPS32_R1
1216 select CPU_HAS_PREFETCH
1217 select CPU_SUPPORTS_32BIT_KERNEL
1218 select CPU_SUPPORTS_HIGHMEM
1220 Choose this option to build a kernel for release 1 or later of the
1221 MIPS32 architecture. Most modern embedded systems with a 32-bit
1222 MIPS processor are based on a MIPS32 processor. If you know the
1223 specific type of processor in your system, choose those that one
1224 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1225 Release 2 of the MIPS32 architecture is available since several
1226 years so chances are you even have a MIPS32 Release 2 processor
1227 in which case you should choose CPU_MIPS32_R2 instead for better
1230 config CPU_MIPS32_R2
1231 bool "MIPS32 Release 2"
1232 depends on SYS_HAS_CPU_MIPS32_R2
1233 select CPU_HAS_PREFETCH
1234 select CPU_SUPPORTS_32BIT_KERNEL
1235 select CPU_SUPPORTS_HIGHMEM
1238 Choose this option to build a kernel for release 2 or later of the
1239 MIPS32 architecture. Most modern embedded systems with a 32-bit
1240 MIPS processor are based on a MIPS32 processor. If you know the
1241 specific type of processor in your system, choose those that one
1242 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1244 config CPU_MIPS64_R1
1245 bool "MIPS64 Release 1"
1246 depends on SYS_HAS_CPU_MIPS64_R1
1247 select CPU_HAS_PREFETCH
1248 select CPU_SUPPORTS_32BIT_KERNEL
1249 select CPU_SUPPORTS_64BIT_KERNEL
1250 select CPU_SUPPORTS_HIGHMEM
1251 select CPU_SUPPORTS_HUGEPAGES
1253 Choose this option to build a kernel for release 1 or later of the
1254 MIPS64 architecture. Many modern embedded systems with a 64-bit
1255 MIPS processor are based on a MIPS64 processor. If you know the
1256 specific type of processor in your system, choose those that one
1257 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1258 Release 2 of the MIPS64 architecture is available since several
1259 years so chances are you even have a MIPS64 Release 2 processor
1260 in which case you should choose CPU_MIPS64_R2 instead for better
1263 config CPU_MIPS64_R2
1264 bool "MIPS64 Release 2"
1265 depends on SYS_HAS_CPU_MIPS64_R2
1266 select CPU_HAS_PREFETCH
1267 select CPU_SUPPORTS_32BIT_KERNEL
1268 select CPU_SUPPORTS_64BIT_KERNEL
1269 select CPU_SUPPORTS_HIGHMEM
1270 select CPU_SUPPORTS_HUGEPAGES
1272 Choose this option to build a kernel for release 2 or later of the
1273 MIPS64 architecture. Many modern embedded systems with a 64-bit
1274 MIPS processor are based on a MIPS64 processor. If you know the
1275 specific type of processor in your system, choose those that one
1276 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1280 depends on SYS_HAS_CPU_R3000
1282 select CPU_SUPPORTS_32BIT_KERNEL
1283 select CPU_SUPPORTS_HIGHMEM
1285 Please make sure to pick the right CPU type. Linux/MIPS is not
1286 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1287 *not* work on R4000 machines and vice versa. However, since most
1288 of the supported machines have an R4000 (or similar) CPU, R4x00
1289 might be a safe bet. If the resulting kernel does not work,
1290 try to recompile with R3000.
1294 depends on SYS_HAS_CPU_TX39XX
1295 select CPU_SUPPORTS_32BIT_KERNEL
1299 depends on SYS_HAS_CPU_VR41XX
1300 select CPU_SUPPORTS_32BIT_KERNEL
1301 select CPU_SUPPORTS_64BIT_KERNEL
1303 The options selects support for the NEC VR4100 series of processors.
1304 Only choose this option if you have one of these processors as a
1305 kernel built with this option will not run on any other type of
1306 processor or vice versa.
1310 depends on SYS_HAS_CPU_R4300
1311 select CPU_SUPPORTS_32BIT_KERNEL
1312 select CPU_SUPPORTS_64BIT_KERNEL
1314 MIPS Technologies R4300-series processors.
1318 depends on SYS_HAS_CPU_R4X00
1319 select CPU_SUPPORTS_32BIT_KERNEL
1320 select CPU_SUPPORTS_64BIT_KERNEL
1321 select CPU_SUPPORTS_HUGEPAGES
1323 MIPS Technologies R4000-series processors other than 4300, including
1324 the R4000, R4400, R4600, and 4700.
1328 depends on SYS_HAS_CPU_TX49XX
1329 select CPU_HAS_PREFETCH
1330 select CPU_SUPPORTS_32BIT_KERNEL
1331 select CPU_SUPPORTS_64BIT_KERNEL
1332 select CPU_SUPPORTS_HUGEPAGES
1336 depends on SYS_HAS_CPU_R5000
1337 select CPU_SUPPORTS_32BIT_KERNEL
1338 select CPU_SUPPORTS_64BIT_KERNEL
1339 select CPU_SUPPORTS_HUGEPAGES
1341 MIPS Technologies R5000-series processors other than the Nevada.
1345 depends on SYS_HAS_CPU_R5432
1346 select CPU_SUPPORTS_32BIT_KERNEL
1347 select CPU_SUPPORTS_64BIT_KERNEL
1348 select CPU_SUPPORTS_HUGEPAGES
1352 depends on SYS_HAS_CPU_R5500
1353 select CPU_SUPPORTS_32BIT_KERNEL
1354 select CPU_SUPPORTS_64BIT_KERNEL
1355 select CPU_SUPPORTS_HUGEPAGES
1357 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1362 depends on SYS_HAS_CPU_R6000
1363 select CPU_SUPPORTS_32BIT_KERNEL
1365 MIPS Technologies R6000 and R6000A series processors. Note these
1366 processors are extremely rare and the support for them is incomplete.
1370 depends on SYS_HAS_CPU_NEVADA
1371 select CPU_SUPPORTS_32BIT_KERNEL
1372 select CPU_SUPPORTS_64BIT_KERNEL
1373 select CPU_SUPPORTS_HUGEPAGES
1375 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1379 depends on SYS_HAS_CPU_R8000
1380 select CPU_HAS_PREFETCH
1381 select CPU_SUPPORTS_64BIT_KERNEL
1383 MIPS Technologies R8000 processors. Note these processors are
1384 uncommon and the support for them is incomplete.
1388 depends on SYS_HAS_CPU_R10000
1389 select CPU_HAS_PREFETCH
1390 select CPU_SUPPORTS_32BIT_KERNEL
1391 select CPU_SUPPORTS_64BIT_KERNEL
1392 select CPU_SUPPORTS_HIGHMEM
1393 select CPU_SUPPORTS_HUGEPAGES
1395 MIPS Technologies R10000-series processors.
1399 depends on SYS_HAS_CPU_RM7000
1400 select CPU_HAS_PREFETCH
1401 select CPU_SUPPORTS_32BIT_KERNEL
1402 select CPU_SUPPORTS_64BIT_KERNEL
1403 select CPU_SUPPORTS_HIGHMEM
1404 select CPU_SUPPORTS_HUGEPAGES
1408 depends on SYS_HAS_CPU_SB1
1409 select CPU_SUPPORTS_32BIT_KERNEL
1410 select CPU_SUPPORTS_64BIT_KERNEL
1411 select CPU_SUPPORTS_HIGHMEM
1412 select CPU_SUPPORTS_HUGEPAGES
1413 select WEAK_ORDERING
1415 config CPU_CAVIUM_OCTEON
1416 bool "Cavium Octeon processor"
1417 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1418 select ARCH_SPARSEMEM_ENABLE
1419 select CPU_HAS_PREFETCH
1420 select CPU_SUPPORTS_64BIT_KERNEL
1421 select SYS_SUPPORTS_SMP
1422 select NR_CPUS_DEFAULT_16
1423 select WEAK_ORDERING
1424 select CPU_SUPPORTS_HIGHMEM
1425 select CPU_SUPPORTS_HUGEPAGES
1428 select USB_EHCI_BIG_ENDIAN_MMIO
1430 The Cavium Octeon processor is a highly integrated chip containing
1431 many ethernet hardware widgets for networking tasks. The processor
1432 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1433 Full details can be found at http://www.caviumnetworks.com.
1435 config CPU_BMIPS3300
1437 depends on SYS_HAS_CPU_BMIPS3300
1440 Broadcom BMIPS3300 processors.
1442 config CPU_BMIPS4350
1444 depends on SYS_HAS_CPU_BMIPS4350
1446 select SYS_SUPPORTS_SMP
1447 select SYS_SUPPORTS_HOTPLUG_CPU
1449 Broadcom BMIPS4350 ("VIPER") processors.
1451 config CPU_BMIPS4380
1453 depends on SYS_HAS_CPU_BMIPS4380
1455 select SYS_SUPPORTS_SMP
1456 select SYS_SUPPORTS_HOTPLUG_CPU
1458 Broadcom BMIPS4380 processors.
1460 config CPU_BMIPS5000
1462 depends on SYS_HAS_CPU_BMIPS5000
1464 select CPU_SUPPORTS_HIGHMEM
1465 select MIPS_CPU_SCACHE
1466 select SYS_SUPPORTS_SMP
1467 select SYS_SUPPORTS_HOTPLUG_CPU
1469 Broadcom BMIPS5000 processors.
1472 bool "Netlogic XLR SoC"
1473 depends on SYS_HAS_CPU_XLR
1474 select CPU_SUPPORTS_32BIT_KERNEL
1475 select CPU_SUPPORTS_64BIT_KERNEL
1476 select CPU_SUPPORTS_HIGHMEM
1477 select CPU_SUPPORTS_HUGEPAGES
1478 select WEAK_ORDERING
1479 select WEAK_REORDERING_BEYOND_LLSC
1481 Netlogic Microsystems XLR/XLS processors.
1484 bool "Netlogic XLP SoC"
1485 depends on SYS_HAS_CPU_XLP
1486 select CPU_SUPPORTS_32BIT_KERNEL
1487 select CPU_SUPPORTS_64BIT_KERNEL
1488 select CPU_SUPPORTS_HIGHMEM
1489 select WEAK_ORDERING
1490 select WEAK_REORDERING_BEYOND_LLSC
1491 select CPU_HAS_PREFETCH
1494 Netlogic Microsystems XLP processors.
1498 config CPU_NOP_WORKAROUNDS
1501 config CPU_JUMP_WORKAROUNDS
1504 config CPU_LOONGSON2F_WORKAROUNDS
1505 bool "Loongson 2F Workarounds"
1507 select CPU_NOP_WORKAROUNDS
1508 select CPU_JUMP_WORKAROUNDS
1510 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1511 require workarounds. Without workarounds the system may hang
1512 unexpectedly. For more information please refer to the gas
1513 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1515 Loongson 2F03 and later have fixed these issues and no workarounds
1516 are needed. The workarounds have no significant side effect on them
1517 but may decrease the performance of the system so this option should
1518 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1521 If unsure, please say Y.
1522 endif # CPU_LOONGSON2F
1524 config SYS_SUPPORTS_ZBOOT
1526 select HAVE_KERNEL_GZIP
1527 select HAVE_KERNEL_BZIP2
1528 select HAVE_KERNEL_LZMA
1529 select HAVE_KERNEL_LZO
1531 config SYS_SUPPORTS_ZBOOT_UART16550
1533 select SYS_SUPPORTS_ZBOOT
1535 config CPU_LOONGSON2
1537 select CPU_SUPPORTS_32BIT_KERNEL
1538 select CPU_SUPPORTS_64BIT_KERNEL
1539 select CPU_SUPPORTS_HIGHMEM
1540 select CPU_SUPPORTS_HUGEPAGES
1542 config CPU_LOONGSON1
1546 select CPU_HAS_PREFETCH
1547 select CPU_SUPPORTS_32BIT_KERNEL
1548 select CPU_SUPPORTS_HIGHMEM
1553 select CPU_SUPPORTS_32BIT_KERNEL
1554 select DMA_NONCOHERENT
1556 select SWAP_IO_SPACE
1557 select WEAK_ORDERING
1559 config SYS_HAS_CPU_LOONGSON2E
1562 config SYS_HAS_CPU_LOONGSON2F
1564 select CPU_SUPPORTS_CPUFREQ
1565 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1566 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1568 config SYS_HAS_CPU_LOONGSON1B
1571 config SYS_HAS_CPU_MIPS32_R1
1574 config SYS_HAS_CPU_MIPS32_R2
1577 config SYS_HAS_CPU_MIPS64_R1
1580 config SYS_HAS_CPU_MIPS64_R2
1583 config SYS_HAS_CPU_R3000
1586 config SYS_HAS_CPU_TX39XX
1589 config SYS_HAS_CPU_VR41XX
1592 config SYS_HAS_CPU_R4300
1595 config SYS_HAS_CPU_R4X00
1598 config SYS_HAS_CPU_TX49XX
1601 config SYS_HAS_CPU_R5000
1604 config SYS_HAS_CPU_R5432
1607 config SYS_HAS_CPU_R5500
1610 config SYS_HAS_CPU_R6000
1613 config SYS_HAS_CPU_NEVADA
1616 config SYS_HAS_CPU_R8000
1619 config SYS_HAS_CPU_R10000
1622 config SYS_HAS_CPU_RM7000
1625 config SYS_HAS_CPU_SB1
1628 config SYS_HAS_CPU_CAVIUM_OCTEON
1631 config SYS_HAS_CPU_BMIPS3300
1634 config SYS_HAS_CPU_BMIPS4350
1637 config SYS_HAS_CPU_BMIPS4380
1640 config SYS_HAS_CPU_BMIPS5000
1643 config SYS_HAS_CPU_XLR
1646 config SYS_HAS_CPU_XLP
1650 # CPU may reorder R->R, R->W, W->R, W->W
1651 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1653 config WEAK_ORDERING
1657 # CPU may reorder reads and writes beyond LL/SC
1658 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1660 config WEAK_REORDERING_BEYOND_LLSC
1665 # These two indicate any level of the MIPS32 and MIPS64 architecture
1669 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1673 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1676 # These two indicate the revision of the architecture, either Release 1 or Release 2
1680 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1684 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1686 config SYS_SUPPORTS_32BIT_KERNEL
1688 config SYS_SUPPORTS_64BIT_KERNEL
1690 config CPU_SUPPORTS_32BIT_KERNEL
1692 config CPU_SUPPORTS_64BIT_KERNEL
1694 config CPU_SUPPORTS_CPUFREQ
1696 config CPU_SUPPORTS_ADDRWINCFG
1698 config CPU_SUPPORTS_HUGEPAGES
1700 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1702 config MIPS_PGD_C0_CONTEXT
1704 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1707 # Set to y for ptrace access to watch registers.
1709 config HARDWARE_WATCHPOINTS
1711 default y if CPU_MIPSR1 || CPU_MIPSR2
1716 prompt "Kernel code model"
1718 You should only select this option if you have a workload that
1719 actually benefits from 64-bit processing or if your machine has
1720 large memory. You will only be presented a single option in this
1721 menu if your system does not support both 32-bit and 64-bit kernels.
1724 bool "32-bit kernel"
1725 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1728 Select this option if you want to build a 32-bit kernel.
1730 bool "64-bit kernel"
1731 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1733 Select this option if you want to build a 64-bit kernel.
1738 bool "KVM Guest Kernel"
1740 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1742 config KVM_HOST_FREQ
1743 int "KVM Host Processor Frequency (MHz)"
1744 depends on KVM_GUEST
1747 Select this option if building a guest kernel for KVM to skip
1748 RTC emulation when determining guest CPU Frequency. Instead, the guest
1749 processor frequency is automatically derived from the host frequency.
1752 prompt "Kernel page size"
1753 default PAGE_SIZE_4KB
1755 config PAGE_SIZE_4KB
1757 depends on !CPU_LOONGSON2
1759 This option select the standard 4kB Linux page size. On some
1760 R3000-family processors this is the only available page size. Using
1761 4kB page size will minimize memory consumption and is therefore
1762 recommended for low memory systems.
1764 config PAGE_SIZE_8KB
1766 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1768 Using 8kB page size will result in higher performance kernel at
1769 the price of higher memory consumption. This option is available
1770 only on R8000 and cnMIPS processors. Note that you will need a
1771 suitable Linux distribution to support this.
1773 config PAGE_SIZE_16KB
1775 depends on !CPU_R3000 && !CPU_TX39XX
1777 Using 16kB page size will result in higher performance kernel at
1778 the price of higher memory consumption. This option is available on
1779 all non-R3000 family processors. Note that you will need a suitable
1780 Linux distribution to support this.
1782 config PAGE_SIZE_32KB
1784 depends on CPU_CAVIUM_OCTEON
1786 Using 32kB page size will result in higher performance kernel at
1787 the price of higher memory consumption. This option is available
1788 only on cnMIPS cores. Note that you will need a suitable Linux
1789 distribution to support this.
1791 config PAGE_SIZE_64KB
1793 depends on !CPU_R3000 && !CPU_TX39XX
1795 Using 64kB page size will result in higher performance kernel at
1796 the price of higher memory consumption. This option is available on
1797 all non-R3000 family processor. Not that at the time of this
1798 writing this option is still high experimental.
1802 config FORCE_MAX_ZONEORDER
1803 int "Maximum zone order"
1804 range 14 64 if HUGETLB_PAGE && PAGE_SIZE_64KB
1805 default "14" if HUGETLB_PAGE && PAGE_SIZE_64KB
1806 range 13 64 if HUGETLB_PAGE && PAGE_SIZE_32KB
1807 default "13" if HUGETLB_PAGE && PAGE_SIZE_32KB
1808 range 12 64 if HUGETLB_PAGE && PAGE_SIZE_16KB
1809 default "12" if HUGETLB_PAGE && PAGE_SIZE_16KB
1813 The kernel memory allocator divides physically contiguous memory
1814 blocks into "zones", where each zone is a power of two number of
1815 pages. This option selects the largest power of two that the kernel
1816 keeps in the memory allocator. If you need to allocate very large
1817 blocks of physically contiguous memory, then you may need to
1818 increase this value.
1820 This config option is actually maximum order plus one. For example,
1821 a value of 11 means that the largest free memory block is 2^10 pages.
1823 The page size is not necessarily 4KB. Keep this in mind
1824 when choosing a value for this option.
1827 bool "Use GIC global counter for clock events"
1828 depends on IRQ_GIC && !(MIPS_SEAD3 || MIPS_MT_SMTC)
1830 Use the GIC global counter for the clock events. The R4K clock
1831 event driver is always present, so if the platform ends up not
1832 detecting a GIC, it will fall back to the R4K timer for the
1833 generation of clock events.
1838 config IP22_CPU_SCACHE
1843 # Support for a MIPS32 / MIPS64 style S-caches
1845 config MIPS_CPU_SCACHE
1849 config R5000_CPU_SCACHE
1853 config RM7000_CPU_SCACHE
1857 config SIBYTE_DMA_PAGEOPS
1858 bool "Use DMA to clear/copy pages"
1861 Instead of using the CPU to zero and copy pages, use a Data Mover
1862 channel. These DMA channels are otherwise unused by the standard
1863 SiByte Linux port. Seems to give a small performance benefit.
1865 config CPU_HAS_PREFETCH
1868 config CPU_GENERIC_DUMP_TLB
1870 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
1874 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1876 config CPU_R4K_CACHE_TLB
1878 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1881 prompt "MIPS MT options"
1883 config MIPS_MT_DISABLED
1884 bool "Disable multithreading support."
1886 Use this option if your workload can't take advantage of
1887 MIPS hardware multithreading support. On systems that don't have
1888 the option of an MT-enabled processor this option will be the only
1889 option in this menu.
1892 bool "Use 1 TC on each available VPE for SMP"
1893 depends on SYS_SUPPORTS_MULTITHREADING
1894 select CPU_MIPSR2_IRQ_VI
1895 select CPU_MIPSR2_IRQ_EI
1897 select NR_CPUS_DEFAULT_2
1899 select SYS_SUPPORTS_SCHED_SMT if SMP
1900 select SYS_SUPPORTS_SMP
1902 select MIPS_PERF_SHARED_TC_COUNTERS
1904 This is a kernel model which is known a VSMP but lately has been
1905 marketesed into SMVP.
1906 Virtual SMP uses the processor's VPEs to implement virtual
1907 processors. In currently available configuration of the 34K processor
1908 this allows for a dual processor. Both processors will share the same
1909 primary caches; each will obtain the half of the TLB for it's own
1910 exclusive use. For a layman this model can be described as similar to
1911 what Intel calls Hyperthreading.
1913 For further information see http://www.linux-mips.org/wiki/34K#VSMP
1916 bool "SMTC: Use all TCs on all VPEs for SMP"
1917 depends on CPU_MIPS32_R2
1918 #depends on CPU_MIPS64_R2 # once there is hardware ...
1919 depends on SYS_SUPPORTS_MULTITHREADING
1920 select CPU_MIPSR2_IRQ_VI
1921 select CPU_MIPSR2_IRQ_EI
1923 select NR_CPUS_DEFAULT_8
1925 select SYS_SUPPORTS_SMP
1928 This is a kernel model which is known a SMTC or lately has been
1929 marketesed into SMVP.
1930 is presenting the available TC's of the core as processors to Linux.
1931 On currently available 34K processors this means a Linux system will
1932 see up to 5 processors. The implementation of the SMTC kernel differs
1933 significantly from VSMP and cannot efficiently coexist in the same
1934 kernel binary so the choice between VSMP and SMTC is a compile time
1937 For further information see http://www.linux-mips.org/wiki/34K#SMTC
1945 bool "SMT (multithreading) scheduler support"
1946 depends on SYS_SUPPORTS_SCHED_SMT
1949 SMT scheduler support improves the CPU scheduler's decision making
1950 when dealing with MIPS MT enabled cores at a cost of slightly
1951 increased overhead in some places. If unsure say N here.
1953 config SYS_SUPPORTS_SCHED_SMT
1956 config SYS_SUPPORTS_MULTITHREADING
1959 config MIPS_MT_FPAFF
1960 bool "Dynamic FPU affinity for FP-intensive threads"
1962 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1964 config MIPS_VPE_LOADER
1965 bool "VPE loader support."
1966 depends on SYS_SUPPORTS_MULTITHREADING
1967 select CPU_MIPSR2_IRQ_VI
1968 select CPU_MIPSR2_IRQ_EI
1971 Includes a loader for loading an elf relocatable object
1972 onto another VPE and running it.
1974 config MIPS_MT_SMTC_IM_BACKSTOP
1975 bool "Use per-TC register bits as backstop for inhibited IM bits"
1976 depends on MIPS_MT_SMTC
1979 To support multiple TC microthreads acting as "CPUs" within
1980 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1981 during interrupt handling. To support legacy drivers and interrupt
1982 controller management code, SMTC has a "backstop" to track and
1983 if necessary restore the interrupt mask. This has some performance
1984 impact on interrupt service overhead.
1986 config MIPS_MT_SMTC_IRQAFF
1987 bool "Support IRQ affinity API"
1988 depends on MIPS_MT_SMTC
1991 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1992 for SMTC Linux kernel. Requires platform support, of which
1993 an example can be found in the MIPS kernel i8259 and Malta
1994 platform code. Adds some overhead to interrupt dispatch, and
1995 should be used only if you know what you are doing.
1997 config MIPS_VPE_LOADER_TOM
1998 bool "Load VPE program into memory hidden from linux"
1999 depends on MIPS_VPE_LOADER
2002 The loader can use memory that is present but has been hidden from
2003 Linux using the kernel command line option "mem=xxMB". It's up to
2004 you to ensure the amount you put in the option and the space your
2005 program requires is less or equal to the amount physically present.
2007 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
2008 config MIPS_VPE_APSP_API
2009 bool "Enable support for AP/SP API (RTLX)"
2010 depends on MIPS_VPE_LOADER
2014 bool "MIPS CMP framework support"
2015 depends on SYS_SUPPORTS_MIPS_CMP
2017 select SYS_SUPPORTS_SMP
2018 select SYS_SUPPORTS_SCHED_SMT if SMP
2019 select WEAK_ORDERING
2022 This is a placeholder option for the GCMP work. It will need to
2023 be handled differently...
2025 config SB1_PASS_1_WORKAROUNDS
2027 depends on CPU_SB1_PASS_1
2030 config SB1_PASS_2_WORKAROUNDS
2032 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2035 config SB1_PASS_2_1_WORKAROUNDS
2037 depends on CPU_SB1 && CPU_SB1_PASS_2
2041 config 64BIT_PHYS_ADDR
2044 config ARCH_PHYS_ADDR_T_64BIT
2045 def_bool 64BIT_PHYS_ADDR
2047 config CPU_HAS_SMARTMIPS
2048 depends on SYS_SUPPORTS_SMARTMIPS
2049 bool "Support for the SmartMIPS ASE"
2051 SmartMIPS is a extension of the MIPS32 architecture aimed at
2052 increased security at both hardware and software level for
2053 smartcards. Enabling this option will allow proper use of the
2054 SmartMIPS instructions by Linux applications. However a kernel with
2055 this option will not work on a MIPS core without SmartMIPS core. If
2056 you don't know you probably don't have SmartMIPS and should say N
2059 config CPU_MICROMIPS
2060 depends on SYS_SUPPORTS_MICROMIPS
2061 bool "Build kernel using microMIPS ISA"
2063 When this option is enabled the kernel will be built using the
2073 # Vectored interrupt mode is an R2 feature
2075 config CPU_MIPSR2_IRQ_VI
2079 # Extended interrupt mode is an R2 feature
2081 config CPU_MIPSR2_IRQ_EI
2086 depends on !CPU_R3000
2092 config CPU_DADDI_WORKAROUNDS
2095 config CPU_R4000_WORKAROUNDS
2097 select CPU_R4400_WORKAROUNDS
2099 config CPU_R4400_WORKAROUNDS
2103 # - Highmem only makes sense for the 32-bit kernel.
2104 # - The current highmem code will only work properly on physically indexed
2105 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2106 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2107 # moment we protect the user and offer the highmem option only on machines
2108 # where it's known to be safe. This will not offer highmem on a few systems
2109 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2110 # indexed CPUs but we're playing safe.
2111 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2112 # know they might have memory configurations that could make use of highmem
2116 bool "High Memory Support"
2117 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2119 config CPU_SUPPORTS_HIGHMEM
2122 config SYS_SUPPORTS_HIGHMEM
2125 config SYS_SUPPORTS_SMARTMIPS
2128 config SYS_SUPPORTS_MICROMIPS
2131 config ARCH_FLATMEM_ENABLE
2133 depends on !NUMA && !CPU_LOONGSON2
2135 config ARCH_DISCONTIGMEM_ENABLE
2137 default y if SGI_IP27
2139 Say Y to support efficient handling of discontiguous physical memory,
2140 for architectures which are either NUMA (Non-Uniform Memory Access)
2141 or have huge holes in the physical address space for other reasons.
2142 See <file:Documentation/vm/numa> for more.
2144 config ARCH_SPARSEMEM_ENABLE
2146 select SPARSEMEM_STATIC
2150 depends on SYS_SUPPORTS_NUMA
2152 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2153 Access). This option improves performance on systems with more
2154 than two nodes; on two node systems it is generally better to
2155 leave it disabled; on single node systems disable this option
2158 config SYS_SUPPORTS_NUMA
2164 depends on NEED_MULTIPLE_NODES
2166 config HW_PERF_EVENTS
2167 bool "Enable hardware performance counter support for perf events"
2168 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2171 Enable hardware performance counter support for perf events. If
2172 disabled, perf events will use software events only.
2177 bool "Multi-Processing support"
2178 depends on SYS_SUPPORTS_SMP
2179 select USE_GENERIC_SMP_HELPERS
2181 This enables support for systems with more than one CPU. If you have
2182 a system with only one CPU, like most personal computers, say N. If
2183 you have a system with more than one CPU, say Y.
2185 If you say N here, the kernel will run on single and multiprocessor
2186 machines, but will use only one CPU of a multiprocessor machine. If
2187 you say Y here, the kernel will run on many, but not all,
2188 singleprocessor machines. On a singleprocessor machine, the kernel
2189 will run faster if you say N here.
2191 People using multiprocessor machines who say Y here should also say
2192 Y to "Enhanced Real Time Clock Support", below.
2194 See also the SMP-HOWTO available at
2195 <http://www.tldp.org/docs.html#howto>.
2197 If you don't know what to do here, say N.
2202 config SYS_SUPPORTS_MIPS_CMP
2205 config SYS_SUPPORTS_SMP
2208 config NR_CPUS_DEFAULT_1
2211 config NR_CPUS_DEFAULT_2
2214 config NR_CPUS_DEFAULT_4
2217 config NR_CPUS_DEFAULT_8
2220 config NR_CPUS_DEFAULT_16
2223 config NR_CPUS_DEFAULT_32
2226 config NR_CPUS_DEFAULT_64
2230 int "Maximum number of CPUs (2-64)"
2231 range 1 64 if NR_CPUS_DEFAULT_1
2233 default "1" if NR_CPUS_DEFAULT_1
2234 default "2" if NR_CPUS_DEFAULT_2
2235 default "4" if NR_CPUS_DEFAULT_4
2236 default "8" if NR_CPUS_DEFAULT_8
2237 default "16" if NR_CPUS_DEFAULT_16
2238 default "32" if NR_CPUS_DEFAULT_32
2239 default "64" if NR_CPUS_DEFAULT_64
2241 This allows you to specify the maximum number of CPUs which this
2242 kernel will support. The maximum supported value is 32 for 32-bit
2243 kernel and 64 for 64-bit kernels; the minimum value which makes
2244 sense is 1 for Qemu (useful only for kernel debugging purposes)
2245 and 2 for all others.
2247 This is purely to save memory - each supported CPU adds
2248 approximately eight kilobytes to the kernel image. For best
2249 performance should round up your number of processors to the next
2252 config MIPS_PERF_SHARED_TC_COUNTERS
2256 # Timer Interrupt Frequency Configuration
2260 prompt "Timer frequency"
2263 Allows the configuration of the timer frequency.
2266 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2269 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2272 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2275 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2278 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2281 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2284 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2288 config SYS_SUPPORTS_48HZ
2291 config SYS_SUPPORTS_100HZ
2294 config SYS_SUPPORTS_128HZ
2297 config SYS_SUPPORTS_250HZ
2300 config SYS_SUPPORTS_256HZ
2303 config SYS_SUPPORTS_1000HZ
2306 config SYS_SUPPORTS_1024HZ
2309 config SYS_SUPPORTS_ARBIT_HZ
2311 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2312 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2313 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2314 !SYS_SUPPORTS_1024HZ
2319 default 100 if HZ_100
2320 default 128 if HZ_128
2321 default 250 if HZ_250
2322 default 256 if HZ_256
2323 default 1000 if HZ_1000
2324 default 1024 if HZ_1024
2326 source "kernel/Kconfig.preempt"
2329 bool "Kexec system call"
2331 kexec is a system call that implements the ability to shutdown your
2332 current kernel, and to start another kernel. It is like a reboot
2333 but it is independent of the system firmware. And like a reboot
2334 you can start any kernel with it, not just Linux.
2336 The name comes from the similarity to the exec system call.
2338 It is an ongoing process to be certain the hardware in a machine
2339 is properly shutdown, so do not be surprised if this code does not
2340 initially work for you. It may help to enable device hotplugging
2341 support. As of this writing the exact hardware interface is
2342 strongly in flux, so no good recommendation can be made.
2345 bool "Kernel crash dumps"
2347 Generate crash dump after being started by kexec.
2348 This should be normally only set in special crash dump kernels
2349 which are loaded in the main kernel with kexec-tools into
2350 a specially reserved region and then later executed after
2351 a crash by kdump/kexec. The crash dump kernel must be compiled
2352 to a memory address not used by the main kernel or firmware using
2355 config PHYSICAL_START
2356 hex "Physical address where the kernel is loaded"
2357 default "0xffffffff84000000" if 64BIT
2358 default "0x84000000" if 32BIT
2359 depends on CRASH_DUMP
2361 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2362 If you plan to use kernel for capturing the crash dump change
2363 this value to start of the reserved region (the "X" value as
2364 specified in the "crashkernel=YM@XM" command line boot parameter
2365 passed to the panic-ed kernel).
2368 bool "Enable seccomp to safely compute untrusted bytecode"
2372 This kernel feature is useful for number crunching applications
2373 that may need to compute untrusted bytecode during their
2374 execution. By using pipes or other transports made available to
2375 the process as file descriptors supporting the read/write
2376 syscalls, it's possible to isolate those applications in
2377 their own address space using seccomp. Once seccomp is
2378 enabled via /proc/<pid>/seccomp, it cannot be disabled
2379 and the task is only allowed to execute a few safe syscalls
2380 defined by each seccomp mode.
2382 If unsure, say Y. Only embedded should say N here.
2387 select OF_EARLY_FLATTREE
2392 config LOCKDEP_SUPPORT
2396 config STACKTRACE_SUPPORT
2400 source "init/Kconfig"
2402 source "kernel/Kconfig.freezer"
2404 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2412 bool "Support for PCI controller"
2413 depends on HW_HAS_PCI
2415 select GENERIC_PCI_IOMAP
2416 select NO_GENERIC_PCI_IOPORT_MAP
2418 Find out whether you have a PCI motherboard. PCI is the name of a
2419 bus system, i.e. the way the CPU talks to the other stuff inside
2420 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2426 source "drivers/pci/Kconfig"
2428 source "drivers/pci/pcie/Kconfig"
2431 # ISA support is now enabled via select. Too many systems still have the one
2432 # or other ISA chip on the board that users don't know about so don't expect
2433 # users to choose the right thing ...
2440 depends on HW_HAS_EISA
2442 select GENERIC_ISA_DMA
2444 The Extended Industry Standard Architecture (EISA) bus was
2445 developed as an open alternative to the IBM MicroChannel bus.
2447 The EISA bus provided some of the features of the IBM MicroChannel
2448 bus while maintaining backward compatibility with cards made for
2449 the older ISA bus. The EISA bus saw limited use between 1988 and
2450 1995 when it was made obsolete by the PCI bus.
2452 Say Y here if you are building a kernel for an EISA-based machine.
2456 source "drivers/eisa/Kconfig"
2459 bool "TURBOchannel support"
2460 depends on MACH_DECSTATION
2462 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2463 processors. TURBOchannel programming specifications are available
2465 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2467 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2468 Linux driver support status is documented at:
2469 <http://www.linux-mips.org/wiki/DECstation>
2479 select MIPS_EXTERNAL_TIMER
2484 source "drivers/pcmcia/Kconfig"
2486 source "drivers/pci/hotplug/Kconfig"
2489 bool "RapidIO support"
2493 If you say Y here, the kernel will include drivers and
2494 infrastructure code to support RapidIO interconnect devices.
2496 source "drivers/rapidio/Kconfig"
2500 menu "Executable file formats"
2502 source "fs/Kconfig.binfmt"
2507 config MIPS32_COMPAT
2508 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2511 Select this option if you want Linux/MIPS 32-bit binary
2512 compatibility. Since all software available for Linux/MIPS is
2513 currently 32-bit you should say Y here.
2517 depends on MIPS32_COMPAT
2518 select ARCH_WANT_OLD_COMPAT_IPC
2521 config SYSVIPC_COMPAT
2523 depends on COMPAT && SYSVIPC
2527 bool "Kernel support for o32 binaries"
2528 depends on MIPS32_COMPAT
2530 Select this option if you want to run o32 binaries. These are pure
2531 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2532 existing binaries are in this format.
2537 bool "Kernel support for n32 binaries"
2538 depends on MIPS32_COMPAT
2540 Select this option if you want to run n32 binaries. These are
2541 64-bit binaries using 32-bit quantities for addressing and certain
2542 data that would normally be 64-bit. They are used in special
2549 default y if MIPS32_O32 || MIPS32_N32
2553 menu "Power management options"
2555 config ARCH_HIBERNATION_POSSIBLE
2557 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2559 config ARCH_SUSPEND_POSSIBLE
2561 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2563 source "kernel/power/Kconfig"
2567 config MIPS_EXTERNAL_TIMER
2570 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2571 menu "CPU Power Management"
2572 source "drivers/cpufreq/Kconfig"
2576 source "net/Kconfig"
2578 source "drivers/Kconfig"
2580 source "drivers/firmware/Kconfig"
2584 source "arch/mips/Kconfig.debug"
2586 source "security/Kconfig"
2588 source "crypto/Kconfig"
2590 source "lib/Kconfig"
2592 source "arch/mips/kvm/Kconfig"