4 select ARCH_MIGHT_HAVE_PC_PARPORT
5 select HAVE_CONTEXT_TRACKING
6 select HAVE_GENERIC_DMA_COHERENT
9 select HAVE_PERF_EVENTS
10 select PERF_USE_VMALLOC
12 select HAVE_ARCH_TRACEHOOK
13 select ARCH_HAVE_CUSTOM_GPIO_H
14 select HAVE_FUNCTION_TRACER
15 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
16 select HAVE_DYNAMIC_FTRACE
17 select HAVE_FTRACE_MCOUNT_RECORD
18 select HAVE_C_RECORDMCOUNT
19 select HAVE_FUNCTION_GRAPH_TRACER
21 select HAVE_KRETPROBES
22 select HAVE_DEBUG_KMEMLEAK
23 select HAVE_SYSCALL_TRACEPOINTS
24 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
25 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
26 select RTC_LIB if !MACH_LOONGSON
27 select GENERIC_ATOMIC64 if !64BIT
28 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
30 select HAVE_DMA_API_DEBUG
31 select GENERIC_IRQ_PROBE
32 select GENERIC_IRQ_SHOW
33 select GENERIC_PCI_IOMAP
34 select HAVE_ARCH_JUMP_LABEL
35 select ARCH_WANT_IPC_PARSE_VERSION
36 select IRQ_FORCED_THREADING
38 select HAVE_MEMBLOCK_NODE_MAP
39 select ARCH_DISCARD_MEMBLOCK
40 select GENERIC_SMP_IDLE_THREAD
41 select BUILDTIME_EXTABLE_SORT
42 select GENERIC_CLOCKEVENTS
43 select GENERIC_CMOS_UPDATE
44 select HAVE_MOD_ARCH_SPECIFIC
46 select MODULES_USE_ELF_REL if MODULES
47 select MODULES_USE_ELF_RELA if MODULES && 64BIT
48 select CLONE_BACKWARDS
49 select HAVE_DEBUG_STACKOVERFLOW
51 menu "Machine selection"
58 bool "Alchemy processor based machines"
59 select 64BIT_PHYS_ADDR
63 select SYS_HAS_CPU_MIPS32_R1
64 select SYS_SUPPORTS_32BIT_KERNEL
65 select SYS_SUPPORTS_APM_EMULATION
66 select ARCH_REQUIRE_GPIOLIB
67 select SYS_SUPPORTS_ZBOOT
68 select USB_ARCH_HAS_OHCI
69 select USB_ARCH_HAS_EHCI
72 bool "Texas Instruments AR7"
74 select DMA_NONCOHERENT
80 select SYS_HAS_CPU_MIPS32_R1
81 select SYS_HAS_EARLY_PRINTK
82 select SYS_SUPPORTS_32BIT_KERNEL
83 select SYS_SUPPORTS_LITTLE_ENDIAN
84 select SYS_SUPPORTS_ZBOOT_UART16550
85 select ARCH_REQUIRE_GPIOLIB
89 Support for the Texas Instruments AR7 System-on-a-Chip
90 family: TNETD7100, 7200 and 7300.
93 bool "Atheros AR71XX/AR724X/AR913X based boards"
94 select ARCH_REQUIRE_GPIOLIB
98 select DMA_NONCOHERENT
103 select SYS_HAS_CPU_MIPS32_R2
104 select SYS_HAS_EARLY_PRINTK
105 select SYS_SUPPORTS_32BIT_KERNEL
106 select SYS_SUPPORTS_BIG_ENDIAN
108 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
111 bool "Broadcom BCM47XX based boards"
112 select ARCH_WANT_OPTIONAL_GPIOLIB
116 select DMA_NONCOHERENT
119 select SYS_HAS_CPU_MIPS32_R1
120 select NO_EXCEPT_FILL
121 select SYS_SUPPORTS_32BIT_KERNEL
122 select SYS_SUPPORTS_LITTLE_ENDIAN
123 select SYS_HAS_EARLY_PRINTK
124 select EARLY_PRINTK_8250 if EARLY_PRINTK
126 Support for BCM47XX based boards
129 bool "Broadcom BCM63XX based boards"
133 select DMA_NONCOHERENT
135 select SYS_SUPPORTS_32BIT_KERNEL
136 select SYS_SUPPORTS_BIG_ENDIAN
137 select SYS_HAS_EARLY_PRINTK
139 select ARCH_REQUIRE_GPIOLIB
142 Support for BCM63XX based boards
149 select DMA_NONCOHERENT
150 select EARLY_PRINTK_8250 if EARLY_PRINTK
156 select PCI_GT64XXX_PCI0
158 select SYS_HAS_CPU_NEVADA
159 select SYS_HAS_EARLY_PRINTK
160 select SYS_SUPPORTS_32BIT_KERNEL
161 select SYS_SUPPORTS_64BIT_KERNEL
162 select SYS_SUPPORTS_LITTLE_ENDIAN
164 config MACH_DECSTATION
171 select CPU_DADDI_WORKAROUNDS if 64BIT
172 select CPU_R4000_WORKAROUNDS if 64BIT
173 select CPU_R4400_WORKAROUNDS if 64BIT
174 select DMA_NONCOHERENT
177 select SYS_HAS_CPU_R3000
178 select SYS_HAS_CPU_R4X00
179 select SYS_SUPPORTS_32BIT_KERNEL
180 select SYS_SUPPORTS_64BIT_KERNEL
181 select SYS_SUPPORTS_LITTLE_ENDIAN
182 select SYS_SUPPORTS_128HZ
183 select SYS_SUPPORTS_256HZ
184 select SYS_SUPPORTS_1024HZ
185 select MIPS_L1_CACHE_SHIFT_4
187 This enables support for DEC's MIPS based workstations. For details
188 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
189 DECstation porting pages on <http://decstation.unix-ag.org/>.
191 If you have one of the following DECstation Models you definitely
192 want to choose R4xx0 for the CPU Type:
199 otherwise choose R3000.
202 bool "Jazz family of machines"
205 select ARCH_MAY_HAVE_PC_FDC
208 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
209 select GENERIC_ISA_DMA
210 select HAVE_PCSPKR_PLATFORM
215 select SYS_HAS_CPU_R4X00
216 select SYS_SUPPORTS_32BIT_KERNEL
217 select SYS_SUPPORTS_64BIT_KERNEL
218 select SYS_SUPPORTS_100HZ
220 This a family of machines based on the MIPS R4030 chipset which was
221 used by several vendors to build RISC/os and Windows NT workstations.
222 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
223 Olivetti M700-10 workstations.
226 bool "Ingenic JZ4740 based machines"
227 select SYS_HAS_CPU_MIPS32_R1
228 select SYS_SUPPORTS_32BIT_KERNEL
229 select SYS_SUPPORTS_LITTLE_ENDIAN
230 select SYS_SUPPORTS_ZBOOT_UART16550
231 select DMA_NONCOHERENT
233 select ARCH_REQUIRE_GPIOLIB
234 select SYS_HAS_EARLY_PRINTK
237 select GENERIC_IRQ_CHIP
240 bool "Lantiq based platforms"
241 select DMA_NONCOHERENT
245 select SYS_HAS_CPU_MIPS32_R1
246 select SYS_HAS_CPU_MIPS32_R2
247 select SYS_SUPPORTS_BIG_ENDIAN
248 select SYS_SUPPORTS_32BIT_KERNEL
249 select SYS_SUPPORTS_MULTITHREADING
250 select SYS_HAS_EARLY_PRINTK
251 select ARCH_REQUIRE_GPIOLIB
254 select HAVE_MACH_CLKDEV
258 select PINCTRL_LANTIQ
261 bool "LASAT Networks platforms"
264 select DMA_NONCOHERENT
265 select SYS_HAS_EARLY_PRINTK
268 select PCI_GT64XXX_PCI0
270 select R5000_CPU_SCACHE
271 select SYS_HAS_CPU_R5000
272 select SYS_SUPPORTS_32BIT_KERNEL
273 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
274 select SYS_SUPPORTS_LITTLE_ENDIAN
277 bool "Loongson family of machines"
278 select SYS_SUPPORTS_ZBOOT
280 This enables the support of Loongson family of machines.
282 Loongson is a family of general-purpose MIPS-compatible CPUs.
283 developed at Institute of Computing Technology (ICT),
284 Chinese Academy of Sciences (CAS) in the People's Republic
285 of China. The chief architect is Professor Weiwu Hu.
287 config MACH_LOONGSON1
288 bool "Loongson 1 family of machines"
289 select SYS_SUPPORTS_ZBOOT
291 This enables support for the Loongson 1 based machines.
293 Loongson 1 is a family of 32-bit MIPS-compatible SoCs developed by
294 the ICT (Institute of Computing Technology) and the Chinese Academy
298 bool "MIPS Malta board"
299 select ARCH_MAY_HAVE_PC_FDC
305 select DMA_MAYBE_COHERENT
306 select GENERIC_ISA_DMA
307 select HAVE_PCSPKR_PLATFORM
314 select MIPS_CPU_SCACHE
315 select PCI_GT64XXX_PCI0
318 select SYS_HAS_CPU_MIPS32_R1
319 select SYS_HAS_CPU_MIPS32_R2
320 select SYS_HAS_CPU_MIPS64_R1
321 select SYS_HAS_CPU_MIPS64_R2
322 select SYS_HAS_CPU_NEVADA
323 select SYS_HAS_CPU_RM7000
324 select SYS_SUPPORTS_32BIT_KERNEL
325 select SYS_SUPPORTS_64BIT_KERNEL
326 select SYS_SUPPORTS_BIG_ENDIAN
327 select SYS_SUPPORTS_LITTLE_ENDIAN
328 select SYS_SUPPORTS_MIPS_CMP
329 select SYS_SUPPORTS_MULTITHREADING
330 select SYS_SUPPORTS_SMARTMIPS
331 select SYS_SUPPORTS_ZBOOT
333 This enables support for the MIPS Technologies Malta evaluation
337 bool "MIPS SEAD3 board"
343 select CPU_MIPSR2_IRQ_VI
344 select CPU_MIPSR2_IRQ_EI
345 select DMA_NONCOHERENT
350 select SYS_HAS_CPU_MIPS32_R1
351 select SYS_HAS_CPU_MIPS32_R2
352 select SYS_HAS_CPU_MIPS64_R1
353 select SYS_HAS_EARLY_PRINTK
354 select SYS_SUPPORTS_32BIT_KERNEL
355 select SYS_SUPPORTS_64BIT_KERNEL
356 select SYS_SUPPORTS_BIG_ENDIAN
357 select SYS_SUPPORTS_LITTLE_ENDIAN
358 select SYS_SUPPORTS_SMARTMIPS
359 select SYS_SUPPORTS_MICROMIPS
360 select USB_ARCH_HAS_EHCI
361 select USB_EHCI_BIG_ENDIAN_DESC
362 select USB_EHCI_BIG_ENDIAN_MMIO
365 This enables support for the MIPS Technologies SEAD3 evaluation
369 bool "NEC EMMA2RH Mark-eins board"
373 This enables support for the NEC Electronics Mark-eins boards.
376 bool "NEC VR4100 series based machines"
379 select SYS_HAS_CPU_VR41XX
380 select ARCH_REQUIRE_GPIOLIB
383 bool "NXP STB220 board"
386 Support for NXP Semiconductors STB220 Development Board.
393 Support for NXP Semiconductors STB225 Development Board.
396 bool "PMC-Sierra MSP chipsets"
399 select DMA_NONCOHERENT
401 select NO_EXCEPT_FILL
403 select SYS_HAS_CPU_MIPS32_R1
404 select SYS_HAS_CPU_MIPS32_R2
405 select SYS_SUPPORTS_32BIT_KERNEL
406 select SYS_SUPPORTS_BIG_ENDIAN
409 select SERIAL_8250_CONSOLE
410 select USB_EHCI_BIG_ENDIAN_MMIO
411 select USB_EHCI_BIG_ENDIAN_DESC
413 This adds support for the PMC-Sierra family of Multi-Service
414 Processor System-On-A-Chips. These parts include a number
415 of integrated peripherals, interfaces and DSPs in addition to
416 a variety of MIPS cores.
419 bool "Ralink based machines"
423 select DMA_NONCOHERENT
426 select SYS_HAS_CPU_MIPS32_R1
427 select SYS_HAS_CPU_MIPS32_R2
428 select SYS_SUPPORTS_32BIT_KERNEL
429 select SYS_SUPPORTS_LITTLE_ENDIAN
430 select SYS_HAS_EARLY_PRINTK
431 select HAVE_MACH_CLKDEV
433 select ARCH_HAS_RESET_CONTROLLER
434 select RESET_CONTROLLER
437 bool "SGI IP22 (Indy/Indigo2)"
443 select DEFAULT_SGI_PARTITION
444 select DMA_NONCOHERENT
448 select IP22_CPU_SCACHE
450 select GENERIC_ISA_DMA_SUPPORT_BROKEN
452 select SGI_HAS_INDYDOG
458 select SYS_HAS_CPU_R4X00
459 select SYS_HAS_CPU_R5000
461 # Disable EARLY_PRINTK for now since it leads to overwritten prom
462 # memory during early boot on some machines.
464 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
465 # for a more details discussion
467 # select SYS_HAS_EARLY_PRINTK
468 select SYS_SUPPORTS_32BIT_KERNEL
469 select SYS_SUPPORTS_64BIT_KERNEL
470 select SYS_SUPPORTS_BIG_ENDIAN
471 select MIPS_L1_CACHE_SHIFT_7
473 This are the SGI Indy, Challenge S and Indigo2, as well as certain
474 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
475 that runs on these, say Y here.
478 bool "SGI IP27 (Origin200/2000)"
482 select DEFAULT_SGI_PARTITION
484 select SYS_HAS_EARLY_PRINTK
486 select NR_CPUS_DEFAULT_64
487 select SYS_HAS_CPU_R10000
488 select SYS_SUPPORTS_64BIT_KERNEL
489 select SYS_SUPPORTS_BIG_ENDIAN
490 select SYS_SUPPORTS_NUMA
491 select SYS_SUPPORTS_SMP
492 select MIPS_L1_CACHE_SHIFT_7
494 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
495 workstations. To compile a Linux kernel that runs on these, say Y
499 bool "SGI IP28 (Indigo2 R10k)"
505 select DEFAULT_SGI_PARTITION
506 select DMA_NONCOHERENT
507 select GENERIC_ISA_DMA_SUPPORT_BROKEN
513 select SGI_HAS_INDYDOG
519 select SYS_HAS_CPU_R10000
521 # Disable EARLY_PRINTK for now since it leads to overwritten prom
522 # memory during early boot on some machines.
524 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
525 # for a more details discussion
527 # select SYS_HAS_EARLY_PRINTK
528 select SYS_SUPPORTS_64BIT_KERNEL
529 select SYS_SUPPORTS_BIG_ENDIAN
531 This is the SGI Indigo2 with R10000 processor. To compile a Linux
532 kernel that runs on these, say Y here.
541 select DMA_NONCOHERENT
544 select R5000_CPU_SCACHE
545 select RM7000_CPU_SCACHE
546 select SYS_HAS_CPU_R5000
547 select SYS_HAS_CPU_R10000 if BROKEN
548 select SYS_HAS_CPU_RM7000
549 select SYS_HAS_CPU_NEVADA
550 select SYS_SUPPORTS_64BIT_KERNEL
551 select SYS_SUPPORTS_BIG_ENDIAN
553 If you want this kernel to run on SGI O2 workstation, say Y here.
556 bool "Sibyte BCM91120C-CRhine"
559 select SIBYTE_BCM1120
561 select SYS_HAS_CPU_SB1
562 select SYS_SUPPORTS_BIG_ENDIAN
563 select SYS_SUPPORTS_LITTLE_ENDIAN
566 bool "Sibyte BCM91120x-Carmel"
569 select SIBYTE_BCM1120
571 select SYS_HAS_CPU_SB1
572 select SYS_SUPPORTS_BIG_ENDIAN
573 select SYS_SUPPORTS_LITTLE_ENDIAN
576 bool "Sibyte BCM91125C-CRhone"
579 select SIBYTE_BCM1125
581 select SYS_HAS_CPU_SB1
582 select SYS_SUPPORTS_BIG_ENDIAN
583 select SYS_SUPPORTS_HIGHMEM
584 select SYS_SUPPORTS_LITTLE_ENDIAN
587 bool "Sibyte BCM91125E-Rhone"
590 select SIBYTE_BCM1125H
592 select SYS_HAS_CPU_SB1
593 select SYS_SUPPORTS_BIG_ENDIAN
594 select SYS_SUPPORTS_LITTLE_ENDIAN
597 bool "Sibyte BCM91250A-SWARM"
600 select HAVE_PATA_PLATFORM
603 select SYS_HAS_CPU_SB1
604 select SYS_SUPPORTS_BIG_ENDIAN
605 select SYS_SUPPORTS_HIGHMEM
606 select SYS_SUPPORTS_LITTLE_ENDIAN
607 select ZONE_DMA32 if 64BIT
609 config SIBYTE_LITTLESUR
610 bool "Sibyte BCM91250C2-LittleSur"
613 select HAVE_PATA_PLATFORM
616 select SYS_HAS_CPU_SB1
617 select SYS_SUPPORTS_BIG_ENDIAN
618 select SYS_SUPPORTS_HIGHMEM
619 select SYS_SUPPORTS_LITTLE_ENDIAN
621 config SIBYTE_SENTOSA
622 bool "Sibyte BCM91250E-Sentosa"
627 select SYS_HAS_CPU_SB1
628 select SYS_SUPPORTS_BIG_ENDIAN
629 select SYS_SUPPORTS_LITTLE_ENDIAN
632 bool "Sibyte BCM91480B-BigSur"
635 select NR_CPUS_DEFAULT_4
636 select SIBYTE_BCM1x80
638 select SYS_HAS_CPU_SB1
639 select SYS_SUPPORTS_BIG_ENDIAN
640 select SYS_SUPPORTS_HIGHMEM
641 select SYS_SUPPORTS_LITTLE_ENDIAN
642 select ZONE_DMA32 if 64BIT
645 bool "SNI RM200/300/400"
646 select FW_ARC if CPU_LITTLE_ENDIAN
647 select FW_ARC32 if CPU_LITTLE_ENDIAN
648 select FW_SNIPROM if CPU_BIG_ENDIAN
649 select ARCH_MAY_HAVE_PC_FDC
653 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
654 select DMA_NONCOHERENT
655 select GENERIC_ISA_DMA
656 select HAVE_PCSPKR_PLATFORM
663 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
664 select SYS_HAS_CPU_R4X00
665 select SYS_HAS_CPU_R5000
666 select SYS_HAS_CPU_R10000
667 select R5000_CPU_SCACHE
668 select SYS_HAS_EARLY_PRINTK
669 select SYS_SUPPORTS_32BIT_KERNEL
670 select SYS_SUPPORTS_64BIT_KERNEL
671 select SYS_SUPPORTS_BIG_ENDIAN
672 select SYS_SUPPORTS_HIGHMEM
673 select SYS_SUPPORTS_LITTLE_ENDIAN
675 The SNI RM200/300/400 are MIPS-based machines manufactured by
676 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
677 Technology and now in turn merged with Fujitsu. Say Y here to
678 support this machine type.
681 bool "Toshiba TX39 series based machines"
684 bool "Toshiba TX49 series based machines"
686 config MIKROTIK_RB532
687 bool "Mikrotik RB532 boards"
690 select DMA_NONCOHERENT
693 select SYS_HAS_CPU_MIPS32_R1
694 select SYS_SUPPORTS_32BIT_KERNEL
695 select SYS_SUPPORTS_LITTLE_ENDIAN
698 select ARCH_REQUIRE_GPIOLIB
699 select MIPS_L1_CACHE_SHIFT_4
701 Support the Mikrotik(tm) RouterBoard 532 series,
702 based on the IDT RC32434 SoC.
704 config CAVIUM_OCTEON_SOC
705 bool "Cavium Networks Octeon SoC based boards"
707 select 64BIT_PHYS_ADDR
709 select SYS_SUPPORTS_64BIT_KERNEL
710 select SYS_SUPPORTS_BIG_ENDIAN
712 select SYS_SUPPORTS_HOTPLUG_CPU
713 select SYS_HAS_EARLY_PRINTK
714 select SYS_HAS_CPU_CAVIUM_OCTEON
718 select USB_ARCH_HAS_OHCI
719 select USB_ARCH_HAS_EHCI
721 select ARCH_REQUIRE_GPIOLIB
723 This option supports all of the Octeon reference boards from Cavium
724 Networks. It builds a kernel that dynamically determines the Octeon
725 CPU type and supports all known board reference implementations.
726 Some of the supported boards are:
733 Say Y here for most Octeon reference boards.
736 bool "Netlogic XLR/XLS based systems"
739 select SYS_HAS_CPU_XLR
740 select SYS_SUPPORTS_SMP
743 select SYS_SUPPORTS_32BIT_KERNEL
744 select SYS_SUPPORTS_64BIT_KERNEL
745 select 64BIT_PHYS_ADDR
746 select SYS_SUPPORTS_BIG_ENDIAN
747 select SYS_SUPPORTS_HIGHMEM
749 select NR_CPUS_DEFAULT_32
753 select ZONE_DMA32 if 64BIT
755 select SYS_HAS_EARLY_PRINTK
756 select USB_ARCH_HAS_OHCI if USB_SUPPORT
757 select USB_ARCH_HAS_EHCI if USB_SUPPORT
758 select SYS_SUPPORTS_ZBOOT
759 select SYS_SUPPORTS_ZBOOT_UART16550
761 Support for systems based on Netlogic XLR and XLS processors.
762 Say Y here if you have a XLR or XLS based board.
765 bool "Netlogic XLP based systems"
768 select SYS_HAS_CPU_XLP
769 select SYS_SUPPORTS_SMP
771 select SYS_SUPPORTS_32BIT_KERNEL
772 select SYS_SUPPORTS_64BIT_KERNEL
773 select 64BIT_PHYS_ADDR
774 select SYS_SUPPORTS_BIG_ENDIAN
775 select SYS_SUPPORTS_LITTLE_ENDIAN
776 select SYS_SUPPORTS_HIGHMEM
778 select NR_CPUS_DEFAULT_32
782 select ARCH_SUPPORTS_MSI
783 select ZONE_DMA32 if 64BIT
785 select SYS_HAS_EARLY_PRINTK
787 select SYS_SUPPORTS_ZBOOT
788 select SYS_SUPPORTS_ZBOOT_UART16550
790 This board is based on Netlogic XLP Processor.
791 Say Y here if you have a XLP based board.
795 source "arch/mips/alchemy/Kconfig"
796 source "arch/mips/ath79/Kconfig"
797 source "arch/mips/bcm47xx/Kconfig"
798 source "arch/mips/bcm63xx/Kconfig"
799 source "arch/mips/jazz/Kconfig"
800 source "arch/mips/jz4740/Kconfig"
801 source "arch/mips/lantiq/Kconfig"
802 source "arch/mips/lasat/Kconfig"
803 source "arch/mips/pmcs-msp71xx/Kconfig"
804 source "arch/mips/ralink/Kconfig"
805 source "arch/mips/sgi-ip27/Kconfig"
806 source "arch/mips/sibyte/Kconfig"
807 source "arch/mips/txx9/Kconfig"
808 source "arch/mips/vr41xx/Kconfig"
809 source "arch/mips/cavium-octeon/Kconfig"
810 source "arch/mips/loongson/Kconfig"
811 source "arch/mips/loongson1/Kconfig"
812 source "arch/mips/netlogic/Kconfig"
816 config RWSEM_GENERIC_SPINLOCK
820 config RWSEM_XCHGADD_ALGORITHM
823 config ARCH_HAS_ILOG2_U32
827 config ARCH_HAS_ILOG2_U64
831 config GENERIC_HWEIGHT
835 config GENERIC_CALIBRATE_DELAY
839 config SCHED_OMIT_FRAME_POINTER
844 # Select some configuration options automatically based on user selections.
849 config ARCH_MAY_HAVE_PC_FDC
892 select ARCH_REQUIRE_GPIOLIB
898 config ARCH_DMA_ADDR_T_64BIT
899 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
901 config DMA_MAYBE_COHERENT
902 select DMA_NONCOHERENT
908 config DMA_NONCOHERENT
910 select NEED_DMA_MAP_STATE
912 config NEED_DMA_MAP_STATE
915 config SYS_HAS_EARLY_PRINTK
919 bool "Support for hot-pluggable CPUs"
920 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
922 Say Y here to allow turning CPUs off and on. CPUs can be
923 controlled through /sys/devices/system/cpu.
924 (Note: power management support will enable this option
925 automatically on SMP systems. )
926 Say N if you want to disable CPU hotplug.
928 config SYS_SUPPORTS_HOTPLUG_CPU
952 config GENERIC_ISA_DMA
954 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
957 config GENERIC_ISA_DMA_SUPPORT_BROKEN
959 select GENERIC_ISA_DMA
968 # Endianness selection. Sufficiently obscure so many users don't know what to
969 # answer,so we try hard to limit the available choices. Also the use of a
970 # choice statement should be more obvious to the user.
973 prompt "Endianness selection"
975 Some MIPS machines can be configured for either little or big endian
976 byte order. These modes require different kernels and a different
977 Linux distribution. In general there is one preferred byteorder for a
978 particular system but some systems are just as commonly used in the
979 one or the other endianness.
981 config CPU_BIG_ENDIAN
983 depends on SYS_SUPPORTS_BIG_ENDIAN
985 config CPU_LITTLE_ENDIAN
987 depends on SYS_SUPPORTS_LITTLE_ENDIAN
994 config SYS_SUPPORTS_APM_EMULATION
997 config SYS_SUPPORTS_BIG_ENDIAN
1000 config SYS_SUPPORTS_LITTLE_ENDIAN
1003 config SYS_SUPPORTS_HUGETLBFS
1005 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1008 config MIPS_HUGE_TLB_SUPPORT
1009 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1032 config PCI_GT64XXX_PCI0
1035 config NO_EXCEPT_FILL
1042 select DMA_NONCOHERENT
1044 select SWAP_IO_SPACE
1045 select SYS_HAS_CPU_R5500
1046 select SYS_SUPPORTS_32BIT_KERNEL
1047 select SYS_SUPPORTS_64BIT_KERNEL
1048 select SYS_SUPPORTS_BIG_ENDIAN
1055 select DMA_NONCOHERENT
1056 select SYS_HAS_CPU_MIPS32_R2
1057 select SYS_SUPPORTS_32BIT_KERNEL
1058 select SYS_SUPPORTS_LITTLE_ENDIAN
1059 select SYS_SUPPORTS_BIG_ENDIAN
1060 select CPU_MIPSR2_IRQ_VI
1066 config SWAP_IO_SPACE
1069 config SGI_HAS_INDYDOG
1081 config SGI_HAS_ZILOG
1084 config SGI_HAS_I8042
1087 config DEFAULT_SGI_PARTITION
1099 config MIPS_L1_CACHE_SHIFT_4
1102 config MIPS_L1_CACHE_SHIFT_5
1105 config MIPS_L1_CACHE_SHIFT_6
1108 config MIPS_L1_CACHE_SHIFT_7
1111 config MIPS_L1_CACHE_SHIFT
1113 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL || SOC_RT288X
1114 default "6" if MIPS_CPU_SCACHE
1115 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1118 config HAVE_STD_PC_SERIAL_PORT
1122 bool "ARC console support"
1123 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1127 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1132 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1141 menu "CPU selection"
1147 config CPU_LOONGSON2E
1149 depends on SYS_HAS_CPU_LOONGSON2E
1150 select CPU_LOONGSON2
1152 The Loongson 2E processor implements the MIPS III instruction set
1153 with many extensions.
1155 It has an internal FPGA northbridge, which is compatible to
1158 config CPU_LOONGSON2F
1160 depends on SYS_HAS_CPU_LOONGSON2F
1161 select CPU_LOONGSON2
1162 select ARCH_REQUIRE_GPIOLIB
1164 The Loongson 2F processor implements the MIPS III instruction set
1165 with many extensions.
1167 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1168 have a similar programming interface with FPGA northbridge used in
1171 config CPU_LOONGSON1B
1173 depends on SYS_HAS_CPU_LOONGSON1B
1174 select CPU_LOONGSON1
1176 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1177 release 2 instruction set.
1179 config CPU_MIPS32_R1
1180 bool "MIPS32 Release 1"
1181 depends on SYS_HAS_CPU_MIPS32_R1
1182 select CPU_HAS_PREFETCH
1183 select CPU_SUPPORTS_32BIT_KERNEL
1184 select CPU_SUPPORTS_HIGHMEM
1186 Choose this option to build a kernel for release 1 or later of the
1187 MIPS32 architecture. Most modern embedded systems with a 32-bit
1188 MIPS processor are based on a MIPS32 processor. If you know the
1189 specific type of processor in your system, choose those that one
1190 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1191 Release 2 of the MIPS32 architecture is available since several
1192 years so chances are you even have a MIPS32 Release 2 processor
1193 in which case you should choose CPU_MIPS32_R2 instead for better
1196 config CPU_MIPS32_R2
1197 bool "MIPS32 Release 2"
1198 depends on SYS_HAS_CPU_MIPS32_R2
1199 select CPU_HAS_PREFETCH
1200 select CPU_SUPPORTS_32BIT_KERNEL
1201 select CPU_SUPPORTS_HIGHMEM
1204 Choose this option to build a kernel for release 2 or later of the
1205 MIPS32 architecture. Most modern embedded systems with a 32-bit
1206 MIPS processor are based on a MIPS32 processor. If you know the
1207 specific type of processor in your system, choose those that one
1208 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1210 config CPU_MIPS64_R1
1211 bool "MIPS64 Release 1"
1212 depends on SYS_HAS_CPU_MIPS64_R1
1213 select CPU_HAS_PREFETCH
1214 select CPU_SUPPORTS_32BIT_KERNEL
1215 select CPU_SUPPORTS_64BIT_KERNEL
1216 select CPU_SUPPORTS_HIGHMEM
1217 select CPU_SUPPORTS_HUGEPAGES
1219 Choose this option to build a kernel for release 1 or later of the
1220 MIPS64 architecture. Many modern embedded systems with a 64-bit
1221 MIPS processor are based on a MIPS64 processor. If you know the
1222 specific type of processor in your system, choose those that one
1223 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1224 Release 2 of the MIPS64 architecture is available since several
1225 years so chances are you even have a MIPS64 Release 2 processor
1226 in which case you should choose CPU_MIPS64_R2 instead for better
1229 config CPU_MIPS64_R2
1230 bool "MIPS64 Release 2"
1231 depends on SYS_HAS_CPU_MIPS64_R2
1232 select CPU_HAS_PREFETCH
1233 select CPU_SUPPORTS_32BIT_KERNEL
1234 select CPU_SUPPORTS_64BIT_KERNEL
1235 select CPU_SUPPORTS_HIGHMEM
1236 select CPU_SUPPORTS_HUGEPAGES
1238 Choose this option to build a kernel for release 2 or later of the
1239 MIPS64 architecture. Many modern embedded systems with a 64-bit
1240 MIPS processor are based on a MIPS64 processor. If you know the
1241 specific type of processor in your system, choose those that one
1242 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1246 depends on SYS_HAS_CPU_R3000
1248 select CPU_SUPPORTS_32BIT_KERNEL
1249 select CPU_SUPPORTS_HIGHMEM
1251 Please make sure to pick the right CPU type. Linux/MIPS is not
1252 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1253 *not* work on R4000 machines and vice versa. However, since most
1254 of the supported machines have an R4000 (or similar) CPU, R4x00
1255 might be a safe bet. If the resulting kernel does not work,
1256 try to recompile with R3000.
1260 depends on SYS_HAS_CPU_TX39XX
1261 select CPU_SUPPORTS_32BIT_KERNEL
1265 depends on SYS_HAS_CPU_VR41XX
1266 select CPU_SUPPORTS_32BIT_KERNEL
1267 select CPU_SUPPORTS_64BIT_KERNEL
1269 The options selects support for the NEC VR4100 series of processors.
1270 Only choose this option if you have one of these processors as a
1271 kernel built with this option will not run on any other type of
1272 processor or vice versa.
1276 depends on SYS_HAS_CPU_R4300
1277 select CPU_SUPPORTS_32BIT_KERNEL
1278 select CPU_SUPPORTS_64BIT_KERNEL
1280 MIPS Technologies R4300-series processors.
1284 depends on SYS_HAS_CPU_R4X00
1285 select CPU_SUPPORTS_32BIT_KERNEL
1286 select CPU_SUPPORTS_64BIT_KERNEL
1287 select CPU_SUPPORTS_HUGEPAGES
1289 MIPS Technologies R4000-series processors other than 4300, including
1290 the R4000, R4400, R4600, and 4700.
1294 depends on SYS_HAS_CPU_TX49XX
1295 select CPU_HAS_PREFETCH
1296 select CPU_SUPPORTS_32BIT_KERNEL
1297 select CPU_SUPPORTS_64BIT_KERNEL
1298 select CPU_SUPPORTS_HUGEPAGES
1302 depends on SYS_HAS_CPU_R5000
1303 select CPU_SUPPORTS_32BIT_KERNEL
1304 select CPU_SUPPORTS_64BIT_KERNEL
1305 select CPU_SUPPORTS_HUGEPAGES
1307 MIPS Technologies R5000-series processors other than the Nevada.
1311 depends on SYS_HAS_CPU_R5432
1312 select CPU_SUPPORTS_32BIT_KERNEL
1313 select CPU_SUPPORTS_64BIT_KERNEL
1314 select CPU_SUPPORTS_HUGEPAGES
1318 depends on SYS_HAS_CPU_R5500
1319 select CPU_SUPPORTS_32BIT_KERNEL
1320 select CPU_SUPPORTS_64BIT_KERNEL
1321 select CPU_SUPPORTS_HUGEPAGES
1323 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1328 depends on SYS_HAS_CPU_R6000
1329 select CPU_SUPPORTS_32BIT_KERNEL
1331 MIPS Technologies R6000 and R6000A series processors. Note these
1332 processors are extremely rare and the support for them is incomplete.
1336 depends on SYS_HAS_CPU_NEVADA
1337 select CPU_SUPPORTS_32BIT_KERNEL
1338 select CPU_SUPPORTS_64BIT_KERNEL
1339 select CPU_SUPPORTS_HUGEPAGES
1341 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1345 depends on SYS_HAS_CPU_R8000
1346 select CPU_HAS_PREFETCH
1347 select CPU_SUPPORTS_64BIT_KERNEL
1349 MIPS Technologies R8000 processors. Note these processors are
1350 uncommon and the support for them is incomplete.
1354 depends on SYS_HAS_CPU_R10000
1355 select CPU_HAS_PREFETCH
1356 select CPU_SUPPORTS_32BIT_KERNEL
1357 select CPU_SUPPORTS_64BIT_KERNEL
1358 select CPU_SUPPORTS_HIGHMEM
1359 select CPU_SUPPORTS_HUGEPAGES
1361 MIPS Technologies R10000-series processors.
1365 depends on SYS_HAS_CPU_RM7000
1366 select CPU_HAS_PREFETCH
1367 select CPU_SUPPORTS_32BIT_KERNEL
1368 select CPU_SUPPORTS_64BIT_KERNEL
1369 select CPU_SUPPORTS_HIGHMEM
1370 select CPU_SUPPORTS_HUGEPAGES
1374 depends on SYS_HAS_CPU_SB1
1375 select CPU_SUPPORTS_32BIT_KERNEL
1376 select CPU_SUPPORTS_64BIT_KERNEL
1377 select CPU_SUPPORTS_HIGHMEM
1378 select CPU_SUPPORTS_HUGEPAGES
1379 select WEAK_ORDERING
1381 config CPU_CAVIUM_OCTEON
1382 bool "Cavium Octeon processor"
1383 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1384 select ARCH_SPARSEMEM_ENABLE
1385 select CPU_HAS_PREFETCH
1386 select CPU_SUPPORTS_64BIT_KERNEL
1387 select SYS_SUPPORTS_SMP
1388 select NR_CPUS_DEFAULT_16
1389 select WEAK_ORDERING
1390 select CPU_SUPPORTS_HIGHMEM
1391 select CPU_SUPPORTS_HUGEPAGES
1394 select USB_EHCI_BIG_ENDIAN_MMIO
1395 select SYS_HAS_DMA_OPS
1396 select MIPS_L1_CACHE_SHIFT_7
1398 The Cavium Octeon processor is a highly integrated chip containing
1399 many ethernet hardware widgets for networking tasks. The processor
1400 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1401 Full details can be found at http://www.caviumnetworks.com.
1404 bool "Broadcom BMIPS"
1405 depends on SYS_HAS_CPU_BMIPS
1407 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1408 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1409 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1410 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1411 select CPU_SUPPORTS_32BIT_KERNEL
1412 select DMA_NONCOHERENT
1414 select SWAP_IO_SPACE
1415 select WEAK_ORDERING
1416 select CPU_SUPPORTS_HIGHMEM
1417 select CPU_HAS_PREFETCH
1419 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1422 bool "Netlogic XLR SoC"
1423 depends on SYS_HAS_CPU_XLR
1424 select CPU_SUPPORTS_32BIT_KERNEL
1425 select CPU_SUPPORTS_64BIT_KERNEL
1426 select CPU_SUPPORTS_HIGHMEM
1427 select CPU_SUPPORTS_HUGEPAGES
1428 select WEAK_ORDERING
1429 select WEAK_REORDERING_BEYOND_LLSC
1431 Netlogic Microsystems XLR/XLS processors.
1434 bool "Netlogic XLP SoC"
1435 depends on SYS_HAS_CPU_XLP
1436 select CPU_SUPPORTS_32BIT_KERNEL
1437 select CPU_SUPPORTS_64BIT_KERNEL
1438 select CPU_SUPPORTS_HIGHMEM
1439 select WEAK_ORDERING
1440 select WEAK_REORDERING_BEYOND_LLSC
1441 select CPU_HAS_PREFETCH
1444 Netlogic Microsystems XLP processors.
1448 config CPU_NOP_WORKAROUNDS
1451 config CPU_JUMP_WORKAROUNDS
1454 config CPU_LOONGSON2F_WORKAROUNDS
1455 bool "Loongson 2F Workarounds"
1457 select CPU_NOP_WORKAROUNDS
1458 select CPU_JUMP_WORKAROUNDS
1460 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1461 require workarounds. Without workarounds the system may hang
1462 unexpectedly. For more information please refer to the gas
1463 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1465 Loongson 2F03 and later have fixed these issues and no workarounds
1466 are needed. The workarounds have no significant side effect on them
1467 but may decrease the performance of the system so this option should
1468 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1471 If unsure, please say Y.
1472 endif # CPU_LOONGSON2F
1474 config SYS_SUPPORTS_ZBOOT
1476 select HAVE_KERNEL_GZIP
1477 select HAVE_KERNEL_BZIP2
1478 select HAVE_KERNEL_LZ4
1479 select HAVE_KERNEL_LZMA
1480 select HAVE_KERNEL_LZO
1481 select HAVE_KERNEL_XZ
1483 config SYS_SUPPORTS_ZBOOT_UART16550
1485 select SYS_SUPPORTS_ZBOOT
1487 config CPU_LOONGSON2
1489 select CPU_SUPPORTS_32BIT_KERNEL
1490 select CPU_SUPPORTS_64BIT_KERNEL
1491 select CPU_SUPPORTS_HIGHMEM
1492 select CPU_SUPPORTS_HUGEPAGES
1494 config CPU_LOONGSON1
1498 select CPU_HAS_PREFETCH
1499 select CPU_SUPPORTS_32BIT_KERNEL
1500 select CPU_SUPPORTS_HIGHMEM
1502 config CPU_BMIPS32_3300
1503 select SMP_UP if SMP
1506 config CPU_BMIPS4350
1508 select SYS_SUPPORTS_SMP
1509 select SYS_SUPPORTS_HOTPLUG_CPU
1511 config CPU_BMIPS4380
1513 select SYS_SUPPORTS_SMP
1514 select SYS_SUPPORTS_HOTPLUG_CPU
1516 config CPU_BMIPS5000
1518 select MIPS_CPU_SCACHE
1519 select SYS_SUPPORTS_SMP
1520 select SYS_SUPPORTS_HOTPLUG_CPU
1522 config SYS_HAS_CPU_LOONGSON2E
1525 config SYS_HAS_CPU_LOONGSON2F
1527 select CPU_SUPPORTS_CPUFREQ
1528 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1529 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1531 config SYS_HAS_CPU_LOONGSON1B
1534 config SYS_HAS_CPU_MIPS32_R1
1537 config SYS_HAS_CPU_MIPS32_R2
1540 config SYS_HAS_CPU_MIPS64_R1
1543 config SYS_HAS_CPU_MIPS64_R2
1546 config SYS_HAS_CPU_R3000
1549 config SYS_HAS_CPU_TX39XX
1552 config SYS_HAS_CPU_VR41XX
1555 config SYS_HAS_CPU_R4300
1558 config SYS_HAS_CPU_R4X00
1561 config SYS_HAS_CPU_TX49XX
1564 config SYS_HAS_CPU_R5000
1567 config SYS_HAS_CPU_R5432
1570 config SYS_HAS_CPU_R5500
1573 config SYS_HAS_CPU_R6000
1576 config SYS_HAS_CPU_NEVADA
1579 config SYS_HAS_CPU_R8000
1582 config SYS_HAS_CPU_R10000
1585 config SYS_HAS_CPU_RM7000
1588 config SYS_HAS_CPU_SB1
1591 config SYS_HAS_CPU_CAVIUM_OCTEON
1594 config SYS_HAS_CPU_BMIPS
1597 config SYS_HAS_CPU_BMIPS32_3300
1599 select SYS_HAS_CPU_BMIPS
1601 config SYS_HAS_CPU_BMIPS4350
1603 select SYS_HAS_CPU_BMIPS
1605 config SYS_HAS_CPU_BMIPS4380
1607 select SYS_HAS_CPU_BMIPS
1609 config SYS_HAS_CPU_BMIPS5000
1611 select SYS_HAS_CPU_BMIPS
1613 config SYS_HAS_CPU_XLR
1616 config SYS_HAS_CPU_XLP
1620 # CPU may reorder R->R, R->W, W->R, W->W
1621 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1623 config WEAK_ORDERING
1627 # CPU may reorder reads and writes beyond LL/SC
1628 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1630 config WEAK_REORDERING_BEYOND_LLSC
1635 # These two indicate any level of the MIPS32 and MIPS64 architecture
1639 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1643 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1646 # These two indicate the revision of the architecture, either Release 1 or Release 2
1650 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1654 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1656 config SYS_SUPPORTS_32BIT_KERNEL
1658 config SYS_SUPPORTS_64BIT_KERNEL
1660 config CPU_SUPPORTS_32BIT_KERNEL
1662 config CPU_SUPPORTS_64BIT_KERNEL
1664 config CPU_SUPPORTS_CPUFREQ
1666 config CPU_SUPPORTS_ADDRWINCFG
1668 config CPU_SUPPORTS_HUGEPAGES
1670 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1672 config MIPS_PGD_C0_CONTEXT
1674 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1677 # Set to y for ptrace access to watch registers.
1679 config HARDWARE_WATCHPOINTS
1681 default y if CPU_MIPSR1 || CPU_MIPSR2
1686 prompt "Kernel code model"
1688 You should only select this option if you have a workload that
1689 actually benefits from 64-bit processing or if your machine has
1690 large memory. You will only be presented a single option in this
1691 menu if your system does not support both 32-bit and 64-bit kernels.
1694 bool "32-bit kernel"
1695 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1698 Select this option if you want to build a 32-bit kernel.
1700 bool "64-bit kernel"
1701 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1703 Select this option if you want to build a 64-bit kernel.
1708 bool "KVM Guest Kernel"
1709 depends on BROKEN_ON_SMP
1711 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1713 config KVM_HOST_FREQ
1714 int "KVM Host Processor Frequency (MHz)"
1715 depends on KVM_GUEST
1718 Select this option if building a guest kernel for KVM to skip
1719 RTC emulation when determining guest CPU Frequency. Instead, the guest
1720 processor frequency is automatically derived from the host frequency.
1723 prompt "Kernel page size"
1724 default PAGE_SIZE_4KB
1726 config PAGE_SIZE_4KB
1728 depends on !CPU_LOONGSON2
1730 This option select the standard 4kB Linux page size. On some
1731 R3000-family processors this is the only available page size. Using
1732 4kB page size will minimize memory consumption and is therefore
1733 recommended for low memory systems.
1735 config PAGE_SIZE_8KB
1737 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1739 Using 8kB page size will result in higher performance kernel at
1740 the price of higher memory consumption. This option is available
1741 only on R8000 and cnMIPS processors. Note that you will need a
1742 suitable Linux distribution to support this.
1744 config PAGE_SIZE_16KB
1746 depends on !CPU_R3000 && !CPU_TX39XX
1748 Using 16kB page size will result in higher performance kernel at
1749 the price of higher memory consumption. This option is available on
1750 all non-R3000 family processors. Note that you will need a suitable
1751 Linux distribution to support this.
1753 config PAGE_SIZE_32KB
1755 depends on CPU_CAVIUM_OCTEON
1757 Using 32kB page size will result in higher performance kernel at
1758 the price of higher memory consumption. This option is available
1759 only on cnMIPS cores. Note that you will need a suitable Linux
1760 distribution to support this.
1762 config PAGE_SIZE_64KB
1764 depends on !CPU_R3000 && !CPU_TX39XX
1766 Using 64kB page size will result in higher performance kernel at
1767 the price of higher memory consumption. This option is available on
1768 all non-R3000 family processor. Not that at the time of this
1769 writing this option is still high experimental.
1773 config FORCE_MAX_ZONEORDER
1774 int "Maximum zone order"
1775 range 14 64 if HUGETLB_PAGE && PAGE_SIZE_64KB
1776 default "14" if HUGETLB_PAGE && PAGE_SIZE_64KB
1777 range 13 64 if HUGETLB_PAGE && PAGE_SIZE_32KB
1778 default "13" if HUGETLB_PAGE && PAGE_SIZE_32KB
1779 range 12 64 if HUGETLB_PAGE && PAGE_SIZE_16KB
1780 default "12" if HUGETLB_PAGE && PAGE_SIZE_16KB
1784 The kernel memory allocator divides physically contiguous memory
1785 blocks into "zones", where each zone is a power of two number of
1786 pages. This option selects the largest power of two that the kernel
1787 keeps in the memory allocator. If you need to allocate very large
1788 blocks of physically contiguous memory, then you may need to
1789 increase this value.
1791 This config option is actually maximum order plus one. For example,
1792 a value of 11 means that the largest free memory block is 2^10 pages.
1794 The page size is not necessarily 4KB. Keep this in mind
1795 when choosing a value for this option.
1798 bool "Use GIC global counter for clock events"
1799 depends on IRQ_GIC && !(MIPS_SEAD3 || MIPS_MT_SMTC)
1801 Use the GIC global counter for the clock events. The R4K clock
1802 event driver is always present, so if the platform ends up not
1803 detecting a GIC, it will fall back to the R4K timer for the
1804 generation of clock events.
1809 config IP22_CPU_SCACHE
1814 # Support for a MIPS32 / MIPS64 style S-caches
1816 config MIPS_CPU_SCACHE
1819 select MIPS_L1_CACHE_SHIFT_6
1821 config R5000_CPU_SCACHE
1825 config RM7000_CPU_SCACHE
1829 config SIBYTE_DMA_PAGEOPS
1830 bool "Use DMA to clear/copy pages"
1833 Instead of using the CPU to zero and copy pages, use a Data Mover
1834 channel. These DMA channels are otherwise unused by the standard
1835 SiByte Linux port. Seems to give a small performance benefit.
1837 config CPU_HAS_PREFETCH
1840 config CPU_GENERIC_DUMP_TLB
1842 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
1846 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1848 config CPU_R4K_CACHE_TLB
1850 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1853 prompt "MIPS MT options"
1855 config MIPS_MT_DISABLED
1856 bool "Disable multithreading support"
1858 Use this option if your platform does not support the MT ASE
1859 which is hardware multithreading support. On systems without
1860 an MT-enabled processor, this will be the only option that is
1861 available in this menu.
1864 bool "Use 1 TC on each available VPE for SMP"
1865 depends on SYS_SUPPORTS_MULTITHREADING
1866 select CPU_MIPSR2_IRQ_VI
1867 select CPU_MIPSR2_IRQ_EI
1872 select SYS_SUPPORTS_SMP
1873 select SYS_SUPPORTS_SCHED_SMT
1874 select MIPS_PERF_SHARED_TC_COUNTERS
1876 This is a kernel model which is known as SMVP. This is supported
1877 on cores with the MT ASE and uses the available VPEs to implement
1878 virtual processors which supports SMP. This is equivalent to the
1879 Intel Hyperthreading feature. For further information go to
1880 <http://www.imgtec.com/mips/mips-multithreading.asp>.
1883 bool "Use all TCs on all VPEs for SMP (DEPRECATED)"
1884 depends on CPU_MIPS32_R2
1885 depends on SYS_SUPPORTS_MULTITHREADING
1886 select CPU_MIPSR2_IRQ_VI
1887 select CPU_MIPSR2_IRQ_EI
1891 select SYS_SUPPORTS_SMP
1892 select NR_CPUS_DEFAULT_8
1894 This is a kernel model which is known as SMTC. This is
1895 supported on cores with the MT ASE and presents all TCs
1896 available on all VPEs to support SMP. For further
1897 information see <http://www.linux-mips.org/wiki/34K#SMTC>.
1905 bool "SMT (multithreading) scheduler support"
1906 depends on SYS_SUPPORTS_SCHED_SMT
1909 SMT scheduler support improves the CPU scheduler's decision making
1910 when dealing with MIPS MT enabled cores at a cost of slightly
1911 increased overhead in some places. If unsure say N here.
1913 config SYS_SUPPORTS_SCHED_SMT
1916 config SYS_SUPPORTS_MULTITHREADING
1919 config MIPS_MT_FPAFF
1920 bool "Dynamic FPU affinity for FP-intensive threads"
1922 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1924 config MIPS_VPE_LOADER
1925 bool "VPE loader support."
1926 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
1927 select CPU_MIPSR2_IRQ_VI
1928 select CPU_MIPSR2_IRQ_EI
1931 Includes a loader for loading an elf relocatable object
1932 onto another VPE and running it.
1934 config MIPS_VPE_LOADER_CMP
1937 depends on MIPS_VPE_LOADER && MIPS_CMP
1939 config MIPS_VPE_LOADER_MT
1942 depends on MIPS_VPE_LOADER && !MIPS_CMP
1944 config MIPS_MT_SMTC_IM_BACKSTOP
1945 bool "Use per-TC register bits as backstop for inhibited IM bits"
1946 depends on MIPS_MT_SMTC
1949 To support multiple TC microthreads acting as "CPUs" within
1950 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1951 during interrupt handling. To support legacy drivers and interrupt
1952 controller management code, SMTC has a "backstop" to track and
1953 if necessary restore the interrupt mask. This has some performance
1954 impact on interrupt service overhead.
1956 config MIPS_MT_SMTC_IRQAFF
1957 bool "Support IRQ affinity API"
1958 depends on MIPS_MT_SMTC
1961 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1962 for SMTC Linux kernel. Requires platform support, of which
1963 an example can be found in the MIPS kernel i8259 and Malta
1964 platform code. Adds some overhead to interrupt dispatch, and
1965 should be used only if you know what you are doing.
1967 config MIPS_VPE_LOADER_TOM
1968 bool "Load VPE program into memory hidden from linux"
1969 depends on MIPS_VPE_LOADER
1972 The loader can use memory that is present but has been hidden from
1973 Linux using the kernel command line option "mem=xxMB". It's up to
1974 you to ensure the amount you put in the option and the space your
1975 program requires is less or equal to the amount physically present.
1977 config MIPS_VPE_APSP_API
1978 bool "Enable support for AP/SP API (RTLX)"
1979 depends on MIPS_VPE_LOADER
1982 config MIPS_VPE_APSP_API_CMP
1985 depends on MIPS_VPE_APSP_API && MIPS_CMP
1987 config MIPS_VPE_APSP_API_MT
1990 depends on MIPS_VPE_APSP_API && !MIPS_CMP
1993 bool "MIPS CMP support"
1994 depends on SYS_SUPPORTS_MIPS_CMP && MIPS_MT_SMP
1996 select WEAK_ORDERING
1999 Enable Coherency Manager processor (CMP) support.
2001 config SB1_PASS_1_WORKAROUNDS
2003 depends on CPU_SB1_PASS_1
2006 config SB1_PASS_2_WORKAROUNDS
2008 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2011 config SB1_PASS_2_1_WORKAROUNDS
2013 depends on CPU_SB1 && CPU_SB1_PASS_2
2017 config 64BIT_PHYS_ADDR
2020 config ARCH_PHYS_ADDR_T_64BIT
2021 def_bool 64BIT_PHYS_ADDR
2023 config CPU_HAS_SMARTMIPS
2024 depends on SYS_SUPPORTS_SMARTMIPS
2025 bool "Support for the SmartMIPS ASE"
2027 SmartMIPS is a extension of the MIPS32 architecture aimed at
2028 increased security at both hardware and software level for
2029 smartcards. Enabling this option will allow proper use of the
2030 SmartMIPS instructions by Linux applications. However a kernel with
2031 this option will not work on a MIPS core without SmartMIPS core. If
2032 you don't know you probably don't have SmartMIPS and should say N
2035 config CPU_MICROMIPS
2036 depends on SYS_SUPPORTS_MICROMIPS
2037 bool "Build kernel using microMIPS ISA"
2039 When this option is enabled the kernel will be built using the
2049 # Vectored interrupt mode is an R2 feature
2051 config CPU_MIPSR2_IRQ_VI
2055 # Extended interrupt mode is an R2 feature
2057 config CPU_MIPSR2_IRQ_EI
2062 depends on !CPU_R3000
2068 config CPU_DADDI_WORKAROUNDS
2071 config CPU_R4000_WORKAROUNDS
2073 select CPU_R4400_WORKAROUNDS
2075 config CPU_R4400_WORKAROUNDS
2079 # - Highmem only makes sense for the 32-bit kernel.
2080 # - The current highmem code will only work properly on physically indexed
2081 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2082 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2083 # moment we protect the user and offer the highmem option only on machines
2084 # where it's known to be safe. This will not offer highmem on a few systems
2085 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2086 # indexed CPUs but we're playing safe.
2087 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2088 # know they might have memory configurations that could make use of highmem
2092 bool "High Memory Support"
2093 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2095 config CPU_SUPPORTS_HIGHMEM
2098 config SYS_SUPPORTS_HIGHMEM
2101 config SYS_SUPPORTS_SMARTMIPS
2104 config SYS_SUPPORTS_MICROMIPS
2107 config ARCH_FLATMEM_ENABLE
2109 depends on !NUMA && !CPU_LOONGSON2
2111 config ARCH_DISCONTIGMEM_ENABLE
2113 default y if SGI_IP27
2115 Say Y to support efficient handling of discontiguous physical memory,
2116 for architectures which are either NUMA (Non-Uniform Memory Access)
2117 or have huge holes in the physical address space for other reasons.
2118 See <file:Documentation/vm/numa> for more.
2120 config ARCH_SPARSEMEM_ENABLE
2122 select SPARSEMEM_STATIC
2126 depends on SYS_SUPPORTS_NUMA
2128 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2129 Access). This option improves performance on systems with more
2130 than two nodes; on two node systems it is generally better to
2131 leave it disabled; on single node systems disable this option
2134 config SYS_SUPPORTS_NUMA
2140 depends on NEED_MULTIPLE_NODES
2142 config HW_PERF_EVENTS
2143 bool "Enable hardware performance counter support for perf events"
2144 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2147 Enable hardware performance counter support for perf events. If
2148 disabled, perf events will use software events only.
2153 bool "Multi-Processing support"
2154 depends on SYS_SUPPORTS_SMP
2156 This enables support for systems with more than one CPU. If you have
2157 a system with only one CPU, like most personal computers, say N. If
2158 you have a system with more than one CPU, say Y.
2160 If you say N here, the kernel will run on single and multiprocessor
2161 machines, but will use only one CPU of a multiprocessor machine. If
2162 you say Y here, the kernel will run on many, but not all,
2163 singleprocessor machines. On a singleprocessor machine, the kernel
2164 will run faster if you say N here.
2166 People using multiprocessor machines who say Y here should also say
2167 Y to "Enhanced Real Time Clock Support", below.
2169 See also the SMP-HOWTO available at
2170 <http://www.tldp.org/docs.html#howto>.
2172 If you don't know what to do here, say N.
2177 config SYS_SUPPORTS_MIPS_CMP
2180 config SYS_SUPPORTS_SMP
2183 config NR_CPUS_DEFAULT_4
2186 config NR_CPUS_DEFAULT_8
2189 config NR_CPUS_DEFAULT_16
2192 config NR_CPUS_DEFAULT_32
2195 config NR_CPUS_DEFAULT_64
2199 int "Maximum number of CPUs (2-64)"
2202 default "4" if NR_CPUS_DEFAULT_4
2203 default "8" if NR_CPUS_DEFAULT_8
2204 default "16" if NR_CPUS_DEFAULT_16
2205 default "32" if NR_CPUS_DEFAULT_32
2206 default "64" if NR_CPUS_DEFAULT_64
2208 This allows you to specify the maximum number of CPUs which this
2209 kernel will support. The maximum supported value is 32 for 32-bit
2210 kernel and 64 for 64-bit kernels; the minimum value which makes
2211 sense is 1 for Qemu (useful only for kernel debugging purposes)
2212 and 2 for all others.
2214 This is purely to save memory - each supported CPU adds
2215 approximately eight kilobytes to the kernel image. For best
2216 performance should round up your number of processors to the next
2219 config MIPS_PERF_SHARED_TC_COUNTERS
2223 # Timer Interrupt Frequency Configuration
2227 prompt "Timer frequency"
2230 Allows the configuration of the timer frequency.
2233 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2236 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2239 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2242 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2245 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2248 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2251 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2255 config SYS_SUPPORTS_48HZ
2258 config SYS_SUPPORTS_100HZ
2261 config SYS_SUPPORTS_128HZ
2264 config SYS_SUPPORTS_250HZ
2267 config SYS_SUPPORTS_256HZ
2270 config SYS_SUPPORTS_1000HZ
2273 config SYS_SUPPORTS_1024HZ
2276 config SYS_SUPPORTS_ARBIT_HZ
2278 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2279 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2280 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2281 !SYS_SUPPORTS_1024HZ
2286 default 100 if HZ_100
2287 default 128 if HZ_128
2288 default 250 if HZ_250
2289 default 256 if HZ_256
2290 default 1000 if HZ_1000
2291 default 1024 if HZ_1024
2293 source "kernel/Kconfig.preempt"
2296 bool "Kexec system call"
2298 kexec is a system call that implements the ability to shutdown your
2299 current kernel, and to start another kernel. It is like a reboot
2300 but it is independent of the system firmware. And like a reboot
2301 you can start any kernel with it, not just Linux.
2303 The name comes from the similarity to the exec system call.
2305 It is an ongoing process to be certain the hardware in a machine
2306 is properly shutdown, so do not be surprised if this code does not
2307 initially work for you. As of this writing the exact hardware
2308 interface is strongly in flux, so no good recommendation can be
2312 bool "Kernel crash dumps"
2314 Generate crash dump after being started by kexec.
2315 This should be normally only set in special crash dump kernels
2316 which are loaded in the main kernel with kexec-tools into
2317 a specially reserved region and then later executed after
2318 a crash by kdump/kexec. The crash dump kernel must be compiled
2319 to a memory address not used by the main kernel or firmware using
2322 config PHYSICAL_START
2323 hex "Physical address where the kernel is loaded"
2324 default "0xffffffff84000000" if 64BIT
2325 default "0x84000000" if 32BIT
2326 depends on CRASH_DUMP
2328 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2329 If you plan to use kernel for capturing the crash dump change
2330 this value to start of the reserved region (the "X" value as
2331 specified in the "crashkernel=YM@XM" command line boot parameter
2332 passed to the panic-ed kernel).
2335 bool "Enable seccomp to safely compute untrusted bytecode"
2339 This kernel feature is useful for number crunching applications
2340 that may need to compute untrusted bytecode during their
2341 execution. By using pipes or other transports made available to
2342 the process as file descriptors supporting the read/write
2343 syscalls, it's possible to isolate those applications in
2344 their own address space using seccomp. Once seccomp is
2345 enabled via /proc/<pid>/seccomp, it cannot be disabled
2346 and the task is only allowed to execute a few safe syscalls
2347 defined by each seccomp mode.
2349 If unsure, say Y. Only embedded should say N here.
2351 config CC_STACKPROTECTOR
2352 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
2354 This option turns on the -fstack-protector GCC feature. This
2355 feature puts, at the beginning of functions, a canary value on
2356 the stack just before the return address, and validates
2357 the value just before actually returning. Stack based buffer
2358 overflows (that need to overwrite this return address) now also
2359 overwrite the canary, which gets detected and the attack is then
2360 neutralized via a kernel panic.
2362 This feature requires gcc version 4.2 or above.
2364 config MIPS_O32_FP64_SUPPORT
2365 bool "Support for O32 binaries using 64-bit FP"
2366 depends on 32BIT || MIPS32_O32
2369 When this is enabled, the kernel will support use of 64-bit floating
2370 point registers with binaries using the O32 ABI along with the
2371 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2372 32-bit MIPS systems this support is at the cost of increasing the
2373 size and complexity of the compiled FPU emulator. Thus if you are
2374 running a MIPS32 system and know that none of your userland binaries
2375 will require 64-bit floating point, you may wish to reduce the size
2376 of your kernel & potentially improve FP emulation performance by
2384 select OF_EARLY_FLATTREE
2389 config LOCKDEP_SUPPORT
2393 config STACKTRACE_SUPPORT
2397 source "init/Kconfig"
2399 source "kernel/Kconfig.freezer"
2401 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2409 bool "Support for PCI controller"
2410 depends on HW_HAS_PCI
2412 select NO_GENERIC_PCI_IOPORT_MAP
2414 Find out whether you have a PCI motherboard. PCI is the name of a
2415 bus system, i.e. the way the CPU talks to the other stuff inside
2416 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2422 source "drivers/pci/Kconfig"
2424 source "drivers/pci/pcie/Kconfig"
2427 # ISA support is now enabled via select. Too many systems still have the one
2428 # or other ISA chip on the board that users don't know about so don't expect
2429 # users to choose the right thing ...
2436 depends on HW_HAS_EISA
2438 select GENERIC_ISA_DMA
2440 The Extended Industry Standard Architecture (EISA) bus was
2441 developed as an open alternative to the IBM MicroChannel bus.
2443 The EISA bus provided some of the features of the IBM MicroChannel
2444 bus while maintaining backward compatibility with cards made for
2445 the older ISA bus. The EISA bus saw limited use between 1988 and
2446 1995 when it was made obsolete by the PCI bus.
2448 Say Y here if you are building a kernel for an EISA-based machine.
2452 source "drivers/eisa/Kconfig"
2455 bool "TURBOchannel support"
2456 depends on MACH_DECSTATION
2458 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2459 processors. TURBOchannel programming specifications are available
2461 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2463 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2464 Linux driver support status is documented at:
2465 <http://www.linux-mips.org/wiki/DECstation>
2475 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"