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
186 This enables support for DEC's MIPS based workstations. For details
187 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
188 DECstation porting pages on <http://decstation.unix-ag.org/>.
190 If you have one of the following DECstation Models you definitely
191 want to choose R4xx0 for the CPU Type:
198 otherwise choose R3000.
201 bool "Jazz family of machines"
204 select ARCH_MAY_HAVE_PC_FDC
207 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
208 select GENERIC_ISA_DMA
209 select HAVE_PCSPKR_PLATFORM
214 select SYS_HAS_CPU_R4X00
215 select SYS_SUPPORTS_32BIT_KERNEL
216 select SYS_SUPPORTS_64BIT_KERNEL
217 select SYS_SUPPORTS_100HZ
219 This a family of machines based on the MIPS R4030 chipset which was
220 used by several vendors to build RISC/os and Windows NT workstations.
221 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
222 Olivetti M700-10 workstations.
225 bool "Ingenic JZ4740 based machines"
226 select SYS_HAS_CPU_MIPS32_R1
227 select SYS_SUPPORTS_32BIT_KERNEL
228 select SYS_SUPPORTS_LITTLE_ENDIAN
229 select SYS_SUPPORTS_ZBOOT_UART16550
230 select DMA_NONCOHERENT
232 select ARCH_REQUIRE_GPIOLIB
233 select SYS_HAS_EARLY_PRINTK
236 select GENERIC_IRQ_CHIP
239 bool "Lantiq based platforms"
240 select DMA_NONCOHERENT
244 select SYS_HAS_CPU_MIPS32_R1
245 select SYS_HAS_CPU_MIPS32_R2
246 select SYS_SUPPORTS_BIG_ENDIAN
247 select SYS_SUPPORTS_32BIT_KERNEL
248 select SYS_SUPPORTS_MULTITHREADING
249 select SYS_HAS_EARLY_PRINTK
250 select ARCH_REQUIRE_GPIOLIB
253 select HAVE_MACH_CLKDEV
257 select PINCTRL_LANTIQ
260 bool "LASAT Networks platforms"
263 select DMA_NONCOHERENT
264 select SYS_HAS_EARLY_PRINTK
267 select PCI_GT64XXX_PCI0
269 select R5000_CPU_SCACHE
270 select SYS_HAS_CPU_R5000
271 select SYS_SUPPORTS_32BIT_KERNEL
272 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
273 select SYS_SUPPORTS_LITTLE_ENDIAN
276 bool "Loongson family of machines"
277 select SYS_SUPPORTS_ZBOOT
279 This enables the support of Loongson family of machines.
281 Loongson is a family of general-purpose MIPS-compatible CPUs.
282 developed at Institute of Computing Technology (ICT),
283 Chinese Academy of Sciences (CAS) in the People's Republic
284 of China. The chief architect is Professor Weiwu Hu.
286 config MACH_LOONGSON1
287 bool "Loongson 1 family of machines"
288 select SYS_SUPPORTS_ZBOOT
290 This enables support for the Loongson 1 based machines.
292 Loongson 1 is a family of 32-bit MIPS-compatible SoCs developed by
293 the ICT (Institute of Computing Technology) and the Chinese Academy
297 bool "MIPS Malta board"
298 select ARCH_MAY_HAVE_PC_FDC
304 select DMA_NONCOHERENT
305 select GENERIC_ISA_DMA
306 select HAVE_PCSPKR_PLATFORM
313 select MIPS_CPU_SCACHE
314 select PCI_GT64XXX_PCI0
317 select SYS_HAS_CPU_MIPS32_R1
318 select SYS_HAS_CPU_MIPS32_R2
319 select SYS_HAS_CPU_MIPS64_R1
320 select SYS_HAS_CPU_MIPS64_R2
321 select SYS_HAS_CPU_NEVADA
322 select SYS_HAS_CPU_RM7000
323 select SYS_HAS_EARLY_PRINTK
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
349 select SYS_HAS_CPU_MIPS32_R1
350 select SYS_HAS_CPU_MIPS32_R2
351 select SYS_HAS_CPU_MIPS64_R1
352 select SYS_HAS_EARLY_PRINTK
353 select SYS_SUPPORTS_32BIT_KERNEL
354 select SYS_SUPPORTS_64BIT_KERNEL
355 select SYS_SUPPORTS_BIG_ENDIAN
356 select SYS_SUPPORTS_LITTLE_ENDIAN
357 select SYS_SUPPORTS_SMARTMIPS
358 select SYS_SUPPORTS_MICROMIPS
359 select USB_ARCH_HAS_EHCI
360 select USB_EHCI_BIG_ENDIAN_DESC
361 select USB_EHCI_BIG_ENDIAN_MMIO
364 This enables support for the MIPS Technologies SEAD3 evaluation
368 bool "NEC EMMA2RH Mark-eins board"
372 This enables support for the NEC Electronics Mark-eins boards.
375 bool "NEC VR4100 series based machines"
378 select SYS_HAS_CPU_VR41XX
379 select ARCH_REQUIRE_GPIOLIB
382 bool "NXP STB220 board"
385 Support for NXP Semiconductors STB220 Development Board.
392 Support for NXP Semiconductors STB225 Development Board.
395 bool "PMC-Sierra MSP chipsets"
398 select DMA_NONCOHERENT
400 select NO_EXCEPT_FILL
402 select SYS_HAS_CPU_MIPS32_R1
403 select SYS_HAS_CPU_MIPS32_R2
404 select SYS_SUPPORTS_32BIT_KERNEL
405 select SYS_SUPPORTS_BIG_ENDIAN
408 select SERIAL_8250_CONSOLE
409 select USB_EHCI_BIG_ENDIAN_MMIO
410 select USB_EHCI_BIG_ENDIAN_DESC
412 This adds support for the PMC-Sierra family of Multi-Service
413 Processor System-On-A-Chips. These parts include a number
414 of integrated peripherals, interfaces and DSPs in addition to
415 a variety of MIPS cores.
418 bool "Ralink based machines"
422 select DMA_NONCOHERENT
425 select SYS_HAS_CPU_MIPS32_R1
426 select SYS_HAS_CPU_MIPS32_R2
427 select SYS_SUPPORTS_32BIT_KERNEL
428 select SYS_SUPPORTS_LITTLE_ENDIAN
429 select SYS_HAS_EARLY_PRINTK
430 select HAVE_MACH_CLKDEV
432 select ARCH_HAS_RESET_CONTROLLER
433 select RESET_CONTROLLER
436 bool "SGI IP22 (Indy/Indigo2)"
442 select DEFAULT_SGI_PARTITION
443 select DMA_NONCOHERENT
447 select IP22_CPU_SCACHE
449 select GENERIC_ISA_DMA_SUPPORT_BROKEN
451 select SGI_HAS_INDYDOG
457 select SYS_HAS_CPU_R4X00
458 select SYS_HAS_CPU_R5000
460 # Disable EARLY_PRINTK for now since it leads to overwritten prom
461 # memory during early boot on some machines.
463 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
464 # for a more details discussion
466 # select SYS_HAS_EARLY_PRINTK
467 select SYS_SUPPORTS_32BIT_KERNEL
468 select SYS_SUPPORTS_64BIT_KERNEL
469 select SYS_SUPPORTS_BIG_ENDIAN
471 This are the SGI Indy, Challenge S and Indigo2, as well as certain
472 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
473 that runs on these, say Y here.
476 bool "SGI IP27 (Origin200/2000)"
480 select DEFAULT_SGI_PARTITION
482 select SYS_HAS_EARLY_PRINTK
484 select NR_CPUS_DEFAULT_64
485 select SYS_HAS_CPU_R10000
486 select SYS_SUPPORTS_64BIT_KERNEL
487 select SYS_SUPPORTS_BIG_ENDIAN
488 select SYS_SUPPORTS_NUMA
489 select SYS_SUPPORTS_SMP
491 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
492 workstations. To compile a Linux kernel that runs on these, say Y
496 bool "SGI IP28 (Indigo2 R10k)"
502 select DEFAULT_SGI_PARTITION
503 select DMA_NONCOHERENT
504 select GENERIC_ISA_DMA_SUPPORT_BROKEN
510 select SGI_HAS_INDYDOG
516 select SYS_HAS_CPU_R10000
518 # Disable EARLY_PRINTK for now since it leads to overwritten prom
519 # memory during early boot on some machines.
521 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
522 # for a more details discussion
524 # select SYS_HAS_EARLY_PRINTK
525 select SYS_SUPPORTS_64BIT_KERNEL
526 select SYS_SUPPORTS_BIG_ENDIAN
528 This is the SGI Indigo2 with R10000 processor. To compile a Linux
529 kernel that runs on these, say Y here.
538 select DMA_NONCOHERENT
541 select R5000_CPU_SCACHE
542 select RM7000_CPU_SCACHE
543 select SYS_HAS_CPU_R5000
544 select SYS_HAS_CPU_R10000 if BROKEN
545 select SYS_HAS_CPU_RM7000
546 select SYS_HAS_CPU_NEVADA
547 select SYS_SUPPORTS_64BIT_KERNEL
548 select SYS_SUPPORTS_BIG_ENDIAN
550 If you want this kernel to run on SGI O2 workstation, say Y here.
553 bool "Sibyte BCM91120C-CRhine"
556 select SIBYTE_BCM1120
558 select SYS_HAS_CPU_SB1
559 select SYS_SUPPORTS_BIG_ENDIAN
560 select SYS_SUPPORTS_LITTLE_ENDIAN
563 bool "Sibyte BCM91120x-Carmel"
566 select SIBYTE_BCM1120
568 select SYS_HAS_CPU_SB1
569 select SYS_SUPPORTS_BIG_ENDIAN
570 select SYS_SUPPORTS_LITTLE_ENDIAN
573 bool "Sibyte BCM91125C-CRhone"
576 select SIBYTE_BCM1125
578 select SYS_HAS_CPU_SB1
579 select SYS_SUPPORTS_BIG_ENDIAN
580 select SYS_SUPPORTS_HIGHMEM
581 select SYS_SUPPORTS_LITTLE_ENDIAN
584 bool "Sibyte BCM91125E-Rhone"
587 select SIBYTE_BCM1125H
589 select SYS_HAS_CPU_SB1
590 select SYS_SUPPORTS_BIG_ENDIAN
591 select SYS_SUPPORTS_LITTLE_ENDIAN
594 bool "Sibyte BCM91250A-SWARM"
597 select HAVE_PATA_PLATFORM
600 select SYS_HAS_CPU_SB1
601 select SYS_SUPPORTS_BIG_ENDIAN
602 select SYS_SUPPORTS_HIGHMEM
603 select SYS_SUPPORTS_LITTLE_ENDIAN
604 select ZONE_DMA32 if 64BIT
606 config SIBYTE_LITTLESUR
607 bool "Sibyte BCM91250C2-LittleSur"
610 select HAVE_PATA_PLATFORM
613 select SYS_HAS_CPU_SB1
614 select SYS_SUPPORTS_BIG_ENDIAN
615 select SYS_SUPPORTS_HIGHMEM
616 select SYS_SUPPORTS_LITTLE_ENDIAN
618 config SIBYTE_SENTOSA
619 bool "Sibyte BCM91250E-Sentosa"
624 select SYS_HAS_CPU_SB1
625 select SYS_SUPPORTS_BIG_ENDIAN
626 select SYS_SUPPORTS_LITTLE_ENDIAN
629 bool "Sibyte BCM91480B-BigSur"
632 select NR_CPUS_DEFAULT_4
633 select SIBYTE_BCM1x80
635 select SYS_HAS_CPU_SB1
636 select SYS_SUPPORTS_BIG_ENDIAN
637 select SYS_SUPPORTS_HIGHMEM
638 select SYS_SUPPORTS_LITTLE_ENDIAN
639 select ZONE_DMA32 if 64BIT
642 bool "SNI RM200/300/400"
643 select FW_ARC if CPU_LITTLE_ENDIAN
644 select FW_ARC32 if CPU_LITTLE_ENDIAN
645 select FW_SNIPROM if CPU_BIG_ENDIAN
646 select ARCH_MAY_HAVE_PC_FDC
650 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
651 select DMA_NONCOHERENT
652 select GENERIC_ISA_DMA
653 select HAVE_PCSPKR_PLATFORM
660 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
661 select SYS_HAS_CPU_R4X00
662 select SYS_HAS_CPU_R5000
663 select SYS_HAS_CPU_R10000
664 select R5000_CPU_SCACHE
665 select SYS_HAS_EARLY_PRINTK
666 select SYS_SUPPORTS_32BIT_KERNEL
667 select SYS_SUPPORTS_64BIT_KERNEL
668 select SYS_SUPPORTS_BIG_ENDIAN
669 select SYS_SUPPORTS_HIGHMEM
670 select SYS_SUPPORTS_LITTLE_ENDIAN
672 The SNI RM200/300/400 are MIPS-based machines manufactured by
673 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
674 Technology and now in turn merged with Fujitsu. Say Y here to
675 support this machine type.
678 bool "Toshiba TX39 series based machines"
681 bool "Toshiba TX49 series based machines"
683 config MIKROTIK_RB532
684 bool "Mikrotik RB532 boards"
687 select DMA_NONCOHERENT
690 select SYS_HAS_CPU_MIPS32_R1
691 select SYS_SUPPORTS_32BIT_KERNEL
692 select SYS_SUPPORTS_LITTLE_ENDIAN
695 select ARCH_REQUIRE_GPIOLIB
697 Support the Mikrotik(tm) RouterBoard 532 series,
698 based on the IDT RC32434 SoC.
700 config CAVIUM_OCTEON_SOC
701 bool "Cavium Networks Octeon SoC based boards"
703 select 64BIT_PHYS_ADDR
705 select SYS_SUPPORTS_64BIT_KERNEL
706 select SYS_SUPPORTS_BIG_ENDIAN
708 select SYS_SUPPORTS_HOTPLUG_CPU
709 select SYS_HAS_EARLY_PRINTK
710 select SYS_HAS_CPU_CAVIUM_OCTEON
714 select USB_ARCH_HAS_OHCI
715 select USB_ARCH_HAS_EHCI
717 select ARCH_REQUIRE_GPIOLIB
719 This option supports all of the Octeon reference boards from Cavium
720 Networks. It builds a kernel that dynamically determines the Octeon
721 CPU type and supports all known board reference implementations.
722 Some of the supported boards are:
729 Say Y here for most Octeon reference boards.
732 bool "Netlogic XLR/XLS based systems"
735 select SYS_HAS_CPU_XLR
736 select SYS_SUPPORTS_SMP
739 select SYS_SUPPORTS_32BIT_KERNEL
740 select SYS_SUPPORTS_64BIT_KERNEL
741 select 64BIT_PHYS_ADDR
742 select SYS_SUPPORTS_BIG_ENDIAN
743 select SYS_SUPPORTS_HIGHMEM
745 select NR_CPUS_DEFAULT_32
749 select ZONE_DMA32 if 64BIT
751 select SYS_HAS_EARLY_PRINTK
752 select USB_ARCH_HAS_OHCI if USB_SUPPORT
753 select USB_ARCH_HAS_EHCI if USB_SUPPORT
754 select SYS_SUPPORTS_ZBOOT
755 select SYS_SUPPORTS_ZBOOT_UART16550
757 Support for systems based on Netlogic XLR and XLS processors.
758 Say Y here if you have a XLR or XLS based board.
761 bool "Netlogic XLP based systems"
764 select SYS_HAS_CPU_XLP
765 select SYS_SUPPORTS_SMP
767 select SYS_SUPPORTS_32BIT_KERNEL
768 select SYS_SUPPORTS_64BIT_KERNEL
769 select 64BIT_PHYS_ADDR
770 select SYS_SUPPORTS_BIG_ENDIAN
771 select SYS_SUPPORTS_LITTLE_ENDIAN
772 select SYS_SUPPORTS_HIGHMEM
774 select NR_CPUS_DEFAULT_32
778 select ZONE_DMA32 if 64BIT
780 select SYS_HAS_EARLY_PRINTK
782 select SYS_SUPPORTS_ZBOOT
783 select SYS_SUPPORTS_ZBOOT_UART16550
785 This board is based on Netlogic XLP Processor.
786 Say Y here if you have a XLP based board.
790 source "arch/mips/alchemy/Kconfig"
791 source "arch/mips/ath79/Kconfig"
792 source "arch/mips/bcm47xx/Kconfig"
793 source "arch/mips/bcm63xx/Kconfig"
794 source "arch/mips/jazz/Kconfig"
795 source "arch/mips/jz4740/Kconfig"
796 source "arch/mips/lantiq/Kconfig"
797 source "arch/mips/lasat/Kconfig"
798 source "arch/mips/pmcs-msp71xx/Kconfig"
799 source "arch/mips/ralink/Kconfig"
800 source "arch/mips/sgi-ip27/Kconfig"
801 source "arch/mips/sibyte/Kconfig"
802 source "arch/mips/txx9/Kconfig"
803 source "arch/mips/vr41xx/Kconfig"
804 source "arch/mips/cavium-octeon/Kconfig"
805 source "arch/mips/loongson/Kconfig"
806 source "arch/mips/loongson1/Kconfig"
807 source "arch/mips/netlogic/Kconfig"
811 config RWSEM_GENERIC_SPINLOCK
815 config RWSEM_XCHGADD_ALGORITHM
818 config ARCH_HAS_ILOG2_U32
822 config ARCH_HAS_ILOG2_U64
826 config GENERIC_HWEIGHT
830 config GENERIC_CALIBRATE_DELAY
834 config SCHED_OMIT_FRAME_POINTER
839 # Select some configuration options automatically based on user selections.
844 config ARCH_MAY_HAVE_PC_FDC
887 select ARCH_REQUIRE_GPIOLIB
893 config ARCH_DMA_ADDR_T_64BIT
894 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
899 config DMA_NONCOHERENT
901 select NEED_DMA_MAP_STATE
903 config NEED_DMA_MAP_STATE
906 config SYS_HAS_EARLY_PRINTK
910 bool "Support for hot-pluggable CPUs"
911 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
913 Say Y here to allow turning CPUs off and on. CPUs can be
914 controlled through /sys/devices/system/cpu.
915 (Note: power management support will enable this option
916 automatically on SMP systems. )
917 Say N if you want to disable CPU hotplug.
919 config SYS_SUPPORTS_HOTPLUG_CPU
943 config GENERIC_ISA_DMA
945 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
948 config GENERIC_ISA_DMA_SUPPORT_BROKEN
950 select GENERIC_ISA_DMA
959 # Endianness selection. Sufficiently obscure so many users don't know what to
960 # answer,so we try hard to limit the available choices. Also the use of a
961 # choice statement should be more obvious to the user.
964 prompt "Endianness selection"
966 Some MIPS machines can be configured for either little or big endian
967 byte order. These modes require different kernels and a different
968 Linux distribution. In general there is one preferred byteorder for a
969 particular system but some systems are just as commonly used in the
970 one or the other endianness.
972 config CPU_BIG_ENDIAN
974 depends on SYS_SUPPORTS_BIG_ENDIAN
976 config CPU_LITTLE_ENDIAN
978 depends on SYS_SUPPORTS_LITTLE_ENDIAN
985 config SYS_SUPPORTS_APM_EMULATION
988 config SYS_SUPPORTS_BIG_ENDIAN
991 config SYS_SUPPORTS_LITTLE_ENDIAN
994 config SYS_SUPPORTS_HUGETLBFS
996 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
999 config MIPS_HUGE_TLB_SUPPORT
1000 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1023 config PCI_GT64XXX_PCI0
1026 config NO_EXCEPT_FILL
1033 select DMA_NONCOHERENT
1035 select SWAP_IO_SPACE
1036 select SYS_HAS_CPU_R5500
1037 select SYS_SUPPORTS_32BIT_KERNEL
1038 select SYS_SUPPORTS_64BIT_KERNEL
1039 select SYS_SUPPORTS_BIG_ENDIAN
1046 select DMA_NONCOHERENT
1047 select SYS_HAS_CPU_MIPS32_R2
1048 select SYS_SUPPORTS_32BIT_KERNEL
1049 select SYS_SUPPORTS_LITTLE_ENDIAN
1050 select SYS_SUPPORTS_BIG_ENDIAN
1051 select CPU_MIPSR2_IRQ_VI
1057 config SWAP_IO_SPACE
1060 config SGI_HAS_INDYDOG
1072 config SGI_HAS_ZILOG
1075 config SGI_HAS_I8042
1078 config DEFAULT_SGI_PARTITION
1090 config MIPS_L1_CACHE_SHIFT
1092 default "4" if MACH_DECSTATION || MIKROTIK_RB532 || PMC_MSP4200_EVAL || SOC_RT288X
1093 default "6" if MIPS_CPU_SCACHE
1094 default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM || CPU_CAVIUM_OCTEON
1097 config HAVE_STD_PC_SERIAL_PORT
1101 bool "ARC console support"
1102 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1106 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1111 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1120 menu "CPU selection"
1126 config CPU_LOONGSON2E
1128 depends on SYS_HAS_CPU_LOONGSON2E
1129 select CPU_LOONGSON2
1131 The Loongson 2E processor implements the MIPS III instruction set
1132 with many extensions.
1134 It has an internal FPGA northbridge, which is compatible to
1137 config CPU_LOONGSON2F
1139 depends on SYS_HAS_CPU_LOONGSON2F
1140 select CPU_LOONGSON2
1141 select ARCH_REQUIRE_GPIOLIB
1143 The Loongson 2F processor implements the MIPS III instruction set
1144 with many extensions.
1146 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1147 have a similar programming interface with FPGA northbridge used in
1150 config CPU_LOONGSON1B
1152 depends on SYS_HAS_CPU_LOONGSON1B
1153 select CPU_LOONGSON1
1155 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1156 release 2 instruction set.
1158 config CPU_MIPS32_R1
1159 bool "MIPS32 Release 1"
1160 depends on SYS_HAS_CPU_MIPS32_R1
1161 select CPU_HAS_PREFETCH
1162 select CPU_SUPPORTS_32BIT_KERNEL
1163 select CPU_SUPPORTS_HIGHMEM
1165 Choose this option to build a kernel for release 1 or later of the
1166 MIPS32 architecture. Most modern embedded systems with a 32-bit
1167 MIPS processor are based on a MIPS32 processor. If you know the
1168 specific type of processor in your system, choose those that one
1169 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1170 Release 2 of the MIPS32 architecture is available since several
1171 years so chances are you even have a MIPS32 Release 2 processor
1172 in which case you should choose CPU_MIPS32_R2 instead for better
1175 config CPU_MIPS32_R2
1176 bool "MIPS32 Release 2"
1177 depends on SYS_HAS_CPU_MIPS32_R2
1178 select CPU_HAS_PREFETCH
1179 select CPU_SUPPORTS_32BIT_KERNEL
1180 select CPU_SUPPORTS_HIGHMEM
1183 Choose this option to build a kernel for release 2 or later of the
1184 MIPS32 architecture. Most modern embedded systems with a 32-bit
1185 MIPS processor are based on a MIPS32 processor. If you know the
1186 specific type of processor in your system, choose those that one
1187 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1189 config CPU_MIPS64_R1
1190 bool "MIPS64 Release 1"
1191 depends on SYS_HAS_CPU_MIPS64_R1
1192 select CPU_HAS_PREFETCH
1193 select CPU_SUPPORTS_32BIT_KERNEL
1194 select CPU_SUPPORTS_64BIT_KERNEL
1195 select CPU_SUPPORTS_HIGHMEM
1196 select CPU_SUPPORTS_HUGEPAGES
1198 Choose this option to build a kernel for release 1 or later of the
1199 MIPS64 architecture. Many modern embedded systems with a 64-bit
1200 MIPS processor are based on a MIPS64 processor. If you know the
1201 specific type of processor in your system, choose those that one
1202 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1203 Release 2 of the MIPS64 architecture is available since several
1204 years so chances are you even have a MIPS64 Release 2 processor
1205 in which case you should choose CPU_MIPS64_R2 instead for better
1208 config CPU_MIPS64_R2
1209 bool "MIPS64 Release 2"
1210 depends on SYS_HAS_CPU_MIPS64_R2
1211 select CPU_HAS_PREFETCH
1212 select CPU_SUPPORTS_32BIT_KERNEL
1213 select CPU_SUPPORTS_64BIT_KERNEL
1214 select CPU_SUPPORTS_HIGHMEM
1215 select CPU_SUPPORTS_HUGEPAGES
1217 Choose this option to build a kernel for release 2 or later of the
1218 MIPS64 architecture. Many modern embedded systems with a 64-bit
1219 MIPS processor are based on a MIPS64 processor. If you know the
1220 specific type of processor in your system, choose those that one
1221 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1225 depends on SYS_HAS_CPU_R3000
1227 select CPU_SUPPORTS_32BIT_KERNEL
1228 select CPU_SUPPORTS_HIGHMEM
1230 Please make sure to pick the right CPU type. Linux/MIPS is not
1231 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1232 *not* work on R4000 machines and vice versa. However, since most
1233 of the supported machines have an R4000 (or similar) CPU, R4x00
1234 might be a safe bet. If the resulting kernel does not work,
1235 try to recompile with R3000.
1239 depends on SYS_HAS_CPU_TX39XX
1240 select CPU_SUPPORTS_32BIT_KERNEL
1244 depends on SYS_HAS_CPU_VR41XX
1245 select CPU_SUPPORTS_32BIT_KERNEL
1246 select CPU_SUPPORTS_64BIT_KERNEL
1248 The options selects support for the NEC VR4100 series of processors.
1249 Only choose this option if you have one of these processors as a
1250 kernel built with this option will not run on any other type of
1251 processor or vice versa.
1255 depends on SYS_HAS_CPU_R4300
1256 select CPU_SUPPORTS_32BIT_KERNEL
1257 select CPU_SUPPORTS_64BIT_KERNEL
1259 MIPS Technologies R4300-series processors.
1263 depends on SYS_HAS_CPU_R4X00
1264 select CPU_SUPPORTS_32BIT_KERNEL
1265 select CPU_SUPPORTS_64BIT_KERNEL
1266 select CPU_SUPPORTS_HUGEPAGES
1268 MIPS Technologies R4000-series processors other than 4300, including
1269 the R4000, R4400, R4600, and 4700.
1273 depends on SYS_HAS_CPU_TX49XX
1274 select CPU_HAS_PREFETCH
1275 select CPU_SUPPORTS_32BIT_KERNEL
1276 select CPU_SUPPORTS_64BIT_KERNEL
1277 select CPU_SUPPORTS_HUGEPAGES
1281 depends on SYS_HAS_CPU_R5000
1282 select CPU_SUPPORTS_32BIT_KERNEL
1283 select CPU_SUPPORTS_64BIT_KERNEL
1284 select CPU_SUPPORTS_HUGEPAGES
1286 MIPS Technologies R5000-series processors other than the Nevada.
1290 depends on SYS_HAS_CPU_R5432
1291 select CPU_SUPPORTS_32BIT_KERNEL
1292 select CPU_SUPPORTS_64BIT_KERNEL
1293 select CPU_SUPPORTS_HUGEPAGES
1297 depends on SYS_HAS_CPU_R5500
1298 select CPU_SUPPORTS_32BIT_KERNEL
1299 select CPU_SUPPORTS_64BIT_KERNEL
1300 select CPU_SUPPORTS_HUGEPAGES
1302 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1307 depends on SYS_HAS_CPU_R6000
1308 select CPU_SUPPORTS_32BIT_KERNEL
1310 MIPS Technologies R6000 and R6000A series processors. Note these
1311 processors are extremely rare and the support for them is incomplete.
1315 depends on SYS_HAS_CPU_NEVADA
1316 select CPU_SUPPORTS_32BIT_KERNEL
1317 select CPU_SUPPORTS_64BIT_KERNEL
1318 select CPU_SUPPORTS_HUGEPAGES
1320 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1324 depends on SYS_HAS_CPU_R8000
1325 select CPU_HAS_PREFETCH
1326 select CPU_SUPPORTS_64BIT_KERNEL
1328 MIPS Technologies R8000 processors. Note these processors are
1329 uncommon and the support for them is incomplete.
1333 depends on SYS_HAS_CPU_R10000
1334 select CPU_HAS_PREFETCH
1335 select CPU_SUPPORTS_32BIT_KERNEL
1336 select CPU_SUPPORTS_64BIT_KERNEL
1337 select CPU_SUPPORTS_HIGHMEM
1338 select CPU_SUPPORTS_HUGEPAGES
1340 MIPS Technologies R10000-series processors.
1344 depends on SYS_HAS_CPU_RM7000
1345 select CPU_HAS_PREFETCH
1346 select CPU_SUPPORTS_32BIT_KERNEL
1347 select CPU_SUPPORTS_64BIT_KERNEL
1348 select CPU_SUPPORTS_HIGHMEM
1349 select CPU_SUPPORTS_HUGEPAGES
1353 depends on SYS_HAS_CPU_SB1
1354 select CPU_SUPPORTS_32BIT_KERNEL
1355 select CPU_SUPPORTS_64BIT_KERNEL
1356 select CPU_SUPPORTS_HIGHMEM
1357 select CPU_SUPPORTS_HUGEPAGES
1358 select WEAK_ORDERING
1360 config CPU_CAVIUM_OCTEON
1361 bool "Cavium Octeon processor"
1362 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1363 select ARCH_SPARSEMEM_ENABLE
1364 select CPU_HAS_PREFETCH
1365 select CPU_SUPPORTS_64BIT_KERNEL
1366 select SYS_SUPPORTS_SMP
1367 select NR_CPUS_DEFAULT_16
1368 select WEAK_ORDERING
1369 select CPU_SUPPORTS_HIGHMEM
1370 select CPU_SUPPORTS_HUGEPAGES
1373 select USB_EHCI_BIG_ENDIAN_MMIO
1375 The Cavium Octeon processor is a highly integrated chip containing
1376 many ethernet hardware widgets for networking tasks. The processor
1377 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1378 Full details can be found at http://www.caviumnetworks.com.
1381 bool "Broadcom BMIPS"
1382 depends on SYS_HAS_CPU_BMIPS
1384 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1385 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1386 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1387 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1388 select CPU_SUPPORTS_32BIT_KERNEL
1389 select DMA_NONCOHERENT
1391 select SWAP_IO_SPACE
1392 select WEAK_ORDERING
1393 select CPU_SUPPORTS_HIGHMEM
1394 select CPU_HAS_PREFETCH
1396 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1399 bool "Netlogic XLR SoC"
1400 depends on SYS_HAS_CPU_XLR
1401 select CPU_SUPPORTS_32BIT_KERNEL
1402 select CPU_SUPPORTS_64BIT_KERNEL
1403 select CPU_SUPPORTS_HIGHMEM
1404 select CPU_SUPPORTS_HUGEPAGES
1405 select WEAK_ORDERING
1406 select WEAK_REORDERING_BEYOND_LLSC
1408 Netlogic Microsystems XLR/XLS processors.
1411 bool "Netlogic XLP SoC"
1412 depends on SYS_HAS_CPU_XLP
1413 select CPU_SUPPORTS_32BIT_KERNEL
1414 select CPU_SUPPORTS_64BIT_KERNEL
1415 select CPU_SUPPORTS_HIGHMEM
1416 select WEAK_ORDERING
1417 select WEAK_REORDERING_BEYOND_LLSC
1418 select CPU_HAS_PREFETCH
1421 Netlogic Microsystems XLP processors.
1425 config CPU_NOP_WORKAROUNDS
1428 config CPU_JUMP_WORKAROUNDS
1431 config CPU_LOONGSON2F_WORKAROUNDS
1432 bool "Loongson 2F Workarounds"
1434 select CPU_NOP_WORKAROUNDS
1435 select CPU_JUMP_WORKAROUNDS
1437 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1438 require workarounds. Without workarounds the system may hang
1439 unexpectedly. For more information please refer to the gas
1440 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1442 Loongson 2F03 and later have fixed these issues and no workarounds
1443 are needed. The workarounds have no significant side effect on them
1444 but may decrease the performance of the system so this option should
1445 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1448 If unsure, please say Y.
1449 endif # CPU_LOONGSON2F
1451 config SYS_SUPPORTS_ZBOOT
1453 select HAVE_KERNEL_GZIP
1454 select HAVE_KERNEL_BZIP2
1455 select HAVE_KERNEL_LZ4
1456 select HAVE_KERNEL_LZMA
1457 select HAVE_KERNEL_LZO
1458 select HAVE_KERNEL_XZ
1460 config SYS_SUPPORTS_ZBOOT_UART16550
1462 select SYS_SUPPORTS_ZBOOT
1464 config CPU_LOONGSON2
1466 select CPU_SUPPORTS_32BIT_KERNEL
1467 select CPU_SUPPORTS_64BIT_KERNEL
1468 select CPU_SUPPORTS_HIGHMEM
1469 select CPU_SUPPORTS_HUGEPAGES
1471 config CPU_LOONGSON1
1475 select CPU_HAS_PREFETCH
1476 select CPU_SUPPORTS_32BIT_KERNEL
1477 select CPU_SUPPORTS_HIGHMEM
1479 config CPU_BMIPS32_3300
1480 select SMP_UP if SMP
1483 config CPU_BMIPS4350
1485 select SYS_SUPPORTS_SMP
1486 select SYS_SUPPORTS_HOTPLUG_CPU
1488 config CPU_BMIPS4380
1490 select SYS_SUPPORTS_SMP
1491 select SYS_SUPPORTS_HOTPLUG_CPU
1493 config CPU_BMIPS5000
1495 select MIPS_CPU_SCACHE
1496 select SYS_SUPPORTS_SMP
1497 select SYS_SUPPORTS_HOTPLUG_CPU
1499 config SYS_HAS_CPU_LOONGSON2E
1502 config SYS_HAS_CPU_LOONGSON2F
1504 select CPU_SUPPORTS_CPUFREQ
1505 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1506 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1508 config SYS_HAS_CPU_LOONGSON1B
1511 config SYS_HAS_CPU_MIPS32_R1
1514 config SYS_HAS_CPU_MIPS32_R2
1517 config SYS_HAS_CPU_MIPS64_R1
1520 config SYS_HAS_CPU_MIPS64_R2
1523 config SYS_HAS_CPU_R3000
1526 config SYS_HAS_CPU_TX39XX
1529 config SYS_HAS_CPU_VR41XX
1532 config SYS_HAS_CPU_R4300
1535 config SYS_HAS_CPU_R4X00
1538 config SYS_HAS_CPU_TX49XX
1541 config SYS_HAS_CPU_R5000
1544 config SYS_HAS_CPU_R5432
1547 config SYS_HAS_CPU_R5500
1550 config SYS_HAS_CPU_R6000
1553 config SYS_HAS_CPU_NEVADA
1556 config SYS_HAS_CPU_R8000
1559 config SYS_HAS_CPU_R10000
1562 config SYS_HAS_CPU_RM7000
1565 config SYS_HAS_CPU_SB1
1568 config SYS_HAS_CPU_CAVIUM_OCTEON
1571 config SYS_HAS_CPU_BMIPS
1574 config SYS_HAS_CPU_BMIPS32_3300
1576 select SYS_HAS_CPU_BMIPS
1578 config SYS_HAS_CPU_BMIPS4350
1580 select SYS_HAS_CPU_BMIPS
1582 config SYS_HAS_CPU_BMIPS4380
1584 select SYS_HAS_CPU_BMIPS
1586 config SYS_HAS_CPU_BMIPS5000
1588 select SYS_HAS_CPU_BMIPS
1590 config SYS_HAS_CPU_XLR
1593 config SYS_HAS_CPU_XLP
1597 # CPU may reorder R->R, R->W, W->R, W->W
1598 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1600 config WEAK_ORDERING
1604 # CPU may reorder reads and writes beyond LL/SC
1605 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1607 config WEAK_REORDERING_BEYOND_LLSC
1612 # These two indicate any level of the MIPS32 and MIPS64 architecture
1616 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1620 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1623 # These two indicate the revision of the architecture, either Release 1 or Release 2
1627 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1631 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1633 config SYS_SUPPORTS_32BIT_KERNEL
1635 config SYS_SUPPORTS_64BIT_KERNEL
1637 config CPU_SUPPORTS_32BIT_KERNEL
1639 config CPU_SUPPORTS_64BIT_KERNEL
1641 config CPU_SUPPORTS_CPUFREQ
1643 config CPU_SUPPORTS_ADDRWINCFG
1645 config CPU_SUPPORTS_HUGEPAGES
1647 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1649 config MIPS_PGD_C0_CONTEXT
1651 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1654 # Set to y for ptrace access to watch registers.
1656 config HARDWARE_WATCHPOINTS
1658 default y if CPU_MIPSR1 || CPU_MIPSR2
1663 prompt "Kernel code model"
1665 You should only select this option if you have a workload that
1666 actually benefits from 64-bit processing or if your machine has
1667 large memory. You will only be presented a single option in this
1668 menu if your system does not support both 32-bit and 64-bit kernels.
1671 bool "32-bit kernel"
1672 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1675 Select this option if you want to build a 32-bit kernel.
1677 bool "64-bit kernel"
1678 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1680 Select this option if you want to build a 64-bit kernel.
1685 bool "KVM Guest Kernel"
1686 depends on BROKEN_ON_SMP
1688 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1690 config KVM_HOST_FREQ
1691 int "KVM Host Processor Frequency (MHz)"
1692 depends on KVM_GUEST
1695 Select this option if building a guest kernel for KVM to skip
1696 RTC emulation when determining guest CPU Frequency. Instead, the guest
1697 processor frequency is automatically derived from the host frequency.
1700 prompt "Kernel page size"
1701 default PAGE_SIZE_4KB
1703 config PAGE_SIZE_4KB
1705 depends on !CPU_LOONGSON2
1707 This option select the standard 4kB Linux page size. On some
1708 R3000-family processors this is the only available page size. Using
1709 4kB page size will minimize memory consumption and is therefore
1710 recommended for low memory systems.
1712 config PAGE_SIZE_8KB
1714 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1716 Using 8kB page size will result in higher performance kernel at
1717 the price of higher memory consumption. This option is available
1718 only on R8000 and cnMIPS processors. Note that you will need a
1719 suitable Linux distribution to support this.
1721 config PAGE_SIZE_16KB
1723 depends on !CPU_R3000 && !CPU_TX39XX
1725 Using 16kB page size will result in higher performance kernel at
1726 the price of higher memory consumption. This option is available on
1727 all non-R3000 family processors. Note that you will need a suitable
1728 Linux distribution to support this.
1730 config PAGE_SIZE_32KB
1732 depends on CPU_CAVIUM_OCTEON
1734 Using 32kB page size will result in higher performance kernel at
1735 the price of higher memory consumption. This option is available
1736 only on cnMIPS cores. Note that you will need a suitable Linux
1737 distribution to support this.
1739 config PAGE_SIZE_64KB
1741 depends on !CPU_R3000 && !CPU_TX39XX
1743 Using 64kB page size will result in higher performance kernel at
1744 the price of higher memory consumption. This option is available on
1745 all non-R3000 family processor. Not that at the time of this
1746 writing this option is still high experimental.
1750 config FORCE_MAX_ZONEORDER
1751 int "Maximum zone order"
1752 range 14 64 if HUGETLB_PAGE && PAGE_SIZE_64KB
1753 default "14" if HUGETLB_PAGE && PAGE_SIZE_64KB
1754 range 13 64 if HUGETLB_PAGE && PAGE_SIZE_32KB
1755 default "13" if HUGETLB_PAGE && PAGE_SIZE_32KB
1756 range 12 64 if HUGETLB_PAGE && PAGE_SIZE_16KB
1757 default "12" if HUGETLB_PAGE && PAGE_SIZE_16KB
1761 The kernel memory allocator divides physically contiguous memory
1762 blocks into "zones", where each zone is a power of two number of
1763 pages. This option selects the largest power of two that the kernel
1764 keeps in the memory allocator. If you need to allocate very large
1765 blocks of physically contiguous memory, then you may need to
1766 increase this value.
1768 This config option is actually maximum order plus one. For example,
1769 a value of 11 means that the largest free memory block is 2^10 pages.
1771 The page size is not necessarily 4KB. Keep this in mind
1772 when choosing a value for this option.
1775 bool "Use GIC global counter for clock events"
1776 depends on IRQ_GIC && !(MIPS_SEAD3 || MIPS_MT_SMTC)
1778 Use the GIC global counter for the clock events. The R4K clock
1779 event driver is always present, so if the platform ends up not
1780 detecting a GIC, it will fall back to the R4K timer for the
1781 generation of clock events.
1786 config IP22_CPU_SCACHE
1791 # Support for a MIPS32 / MIPS64 style S-caches
1793 config MIPS_CPU_SCACHE
1797 config R5000_CPU_SCACHE
1801 config RM7000_CPU_SCACHE
1805 config SIBYTE_DMA_PAGEOPS
1806 bool "Use DMA to clear/copy pages"
1809 Instead of using the CPU to zero and copy pages, use a Data Mover
1810 channel. These DMA channels are otherwise unused by the standard
1811 SiByte Linux port. Seems to give a small performance benefit.
1813 config CPU_HAS_PREFETCH
1816 config CPU_GENERIC_DUMP_TLB
1818 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
1822 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1824 config CPU_R4K_CACHE_TLB
1826 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1829 prompt "MIPS MT options"
1831 config MIPS_MT_DISABLED
1832 bool "Disable multithreading support"
1834 Use this option if your platform does not support the MT ASE
1835 which is hardware multithreading support. On systems without
1836 an MT-enabled processor, this will be the only option that is
1837 available in this menu.
1840 bool "Use 1 TC on each available VPE for SMP"
1841 depends on SYS_SUPPORTS_MULTITHREADING
1842 select CPU_MIPSR2_IRQ_VI
1843 select CPU_MIPSR2_IRQ_EI
1848 select SYS_SUPPORTS_SMP
1849 select SYS_SUPPORTS_SCHED_SMT
1850 select MIPS_PERF_SHARED_TC_COUNTERS
1852 This is a kernel model which is known as SMVP. This is supported
1853 on cores with the MT ASE and uses the available VPEs to implement
1854 virtual processors which supports SMP. This is equivalent to the
1855 Intel Hyperthreading feature. For further information go to
1856 <http://www.imgtec.com/mips/mips-multithreading.asp>.
1859 bool "Use all TCs on all VPEs for SMP (DEPRECATED)"
1860 depends on CPU_MIPS32_R2
1861 depends on SYS_SUPPORTS_MULTITHREADING
1862 select CPU_MIPSR2_IRQ_VI
1863 select CPU_MIPSR2_IRQ_EI
1867 select SYS_SUPPORTS_SMP
1868 select NR_CPUS_DEFAULT_8
1870 This is a kernel model which is known as SMTC. This is
1871 supported on cores with the MT ASE and presents all TCs
1872 available on all VPEs to support SMP. For further
1873 information see <http://www.linux-mips.org/wiki/34K#SMTC>.
1881 bool "SMT (multithreading) scheduler support"
1882 depends on SYS_SUPPORTS_SCHED_SMT
1885 SMT scheduler support improves the CPU scheduler's decision making
1886 when dealing with MIPS MT enabled cores at a cost of slightly
1887 increased overhead in some places. If unsure say N here.
1889 config SYS_SUPPORTS_SCHED_SMT
1892 config SYS_SUPPORTS_MULTITHREADING
1895 config MIPS_MT_FPAFF
1896 bool "Dynamic FPU affinity for FP-intensive threads"
1898 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1900 config MIPS_VPE_LOADER
1901 bool "VPE loader support."
1902 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
1903 select CPU_MIPSR2_IRQ_VI
1904 select CPU_MIPSR2_IRQ_EI
1907 Includes a loader for loading an elf relocatable object
1908 onto another VPE and running it.
1910 config MIPS_VPE_LOADER_CMP
1913 depends on MIPS_VPE_LOADER && MIPS_CMP
1915 config MIPS_VPE_LOADER_MT
1918 depends on MIPS_VPE_LOADER && !MIPS_CMP
1920 config MIPS_MT_SMTC_IM_BACKSTOP
1921 bool "Use per-TC register bits as backstop for inhibited IM bits"
1922 depends on MIPS_MT_SMTC
1925 To support multiple TC microthreads acting as "CPUs" within
1926 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1927 during interrupt handling. To support legacy drivers and interrupt
1928 controller management code, SMTC has a "backstop" to track and
1929 if necessary restore the interrupt mask. This has some performance
1930 impact on interrupt service overhead.
1932 config MIPS_MT_SMTC_IRQAFF
1933 bool "Support IRQ affinity API"
1934 depends on MIPS_MT_SMTC
1937 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1938 for SMTC Linux kernel. Requires platform support, of which
1939 an example can be found in the MIPS kernel i8259 and Malta
1940 platform code. Adds some overhead to interrupt dispatch, and
1941 should be used only if you know what you are doing.
1943 config MIPS_VPE_LOADER_TOM
1944 bool "Load VPE program into memory hidden from linux"
1945 depends on MIPS_VPE_LOADER
1948 The loader can use memory that is present but has been hidden from
1949 Linux using the kernel command line option "mem=xxMB". It's up to
1950 you to ensure the amount you put in the option and the space your
1951 program requires is less or equal to the amount physically present.
1953 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1954 config MIPS_VPE_APSP_API
1955 bool "Enable support for AP/SP API (RTLX)"
1956 depends on MIPS_VPE_LOADER
1959 config MIPS_VPE_APSP_API_CMP
1962 depends on MIPS_VPE_APSP_API && MIPS_CMP
1964 config MIPS_VPE_APSP_API_MT
1967 depends on MIPS_VPE_APSP_API && !MIPS_CMP
1970 bool "MIPS CMP support"
1971 depends on SYS_SUPPORTS_MIPS_CMP && MIPS_MT_SMP
1973 select WEAK_ORDERING
1976 Enable Coherency Manager processor (CMP) support.
1978 config SB1_PASS_1_WORKAROUNDS
1980 depends on CPU_SB1_PASS_1
1983 config SB1_PASS_2_WORKAROUNDS
1985 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1988 config SB1_PASS_2_1_WORKAROUNDS
1990 depends on CPU_SB1 && CPU_SB1_PASS_2
1994 config 64BIT_PHYS_ADDR
1997 config ARCH_PHYS_ADDR_T_64BIT
1998 def_bool 64BIT_PHYS_ADDR
2000 config CPU_HAS_SMARTMIPS
2001 depends on SYS_SUPPORTS_SMARTMIPS
2002 bool "Support for the SmartMIPS ASE"
2004 SmartMIPS is a extension of the MIPS32 architecture aimed at
2005 increased security at both hardware and software level for
2006 smartcards. Enabling this option will allow proper use of the
2007 SmartMIPS instructions by Linux applications. However a kernel with
2008 this option will not work on a MIPS core without SmartMIPS core. If
2009 you don't know you probably don't have SmartMIPS and should say N
2012 config CPU_MICROMIPS
2013 depends on SYS_SUPPORTS_MICROMIPS
2014 bool "Build kernel using microMIPS ISA"
2016 When this option is enabled the kernel will be built using the
2026 # Vectored interrupt mode is an R2 feature
2028 config CPU_MIPSR2_IRQ_VI
2032 # Extended interrupt mode is an R2 feature
2034 config CPU_MIPSR2_IRQ_EI
2039 depends on !CPU_R3000
2045 config CPU_DADDI_WORKAROUNDS
2048 config CPU_R4000_WORKAROUNDS
2050 select CPU_R4400_WORKAROUNDS
2052 config CPU_R4400_WORKAROUNDS
2056 # - Highmem only makes sense for the 32-bit kernel.
2057 # - The current highmem code will only work properly on physically indexed
2058 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2059 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2060 # moment we protect the user and offer the highmem option only on machines
2061 # where it's known to be safe. This will not offer highmem on a few systems
2062 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2063 # indexed CPUs but we're playing safe.
2064 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2065 # know they might have memory configurations that could make use of highmem
2069 bool "High Memory Support"
2070 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2072 config CPU_SUPPORTS_HIGHMEM
2075 config SYS_SUPPORTS_HIGHMEM
2078 config SYS_SUPPORTS_SMARTMIPS
2081 config SYS_SUPPORTS_MICROMIPS
2084 config ARCH_FLATMEM_ENABLE
2086 depends on !NUMA && !CPU_LOONGSON2
2088 config ARCH_DISCONTIGMEM_ENABLE
2090 default y if SGI_IP27
2092 Say Y to support efficient handling of discontiguous physical memory,
2093 for architectures which are either NUMA (Non-Uniform Memory Access)
2094 or have huge holes in the physical address space for other reasons.
2095 See <file:Documentation/vm/numa> for more.
2097 config ARCH_SPARSEMEM_ENABLE
2099 select SPARSEMEM_STATIC
2103 depends on SYS_SUPPORTS_NUMA
2105 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2106 Access). This option improves performance on systems with more
2107 than two nodes; on two node systems it is generally better to
2108 leave it disabled; on single node systems disable this option
2111 config SYS_SUPPORTS_NUMA
2117 depends on NEED_MULTIPLE_NODES
2119 config HW_PERF_EVENTS
2120 bool "Enable hardware performance counter support for perf events"
2121 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2124 Enable hardware performance counter support for perf events. If
2125 disabled, perf events will use software events only.
2130 bool "Multi-Processing support"
2131 depends on SYS_SUPPORTS_SMP
2133 This enables support for systems with more than one CPU. If you have
2134 a system with only one CPU, like most personal computers, say N. If
2135 you have a system with more than one CPU, say Y.
2137 If you say N here, the kernel will run on single and multiprocessor
2138 machines, but will use only one CPU of a multiprocessor machine. If
2139 you say Y here, the kernel will run on many, but not all,
2140 singleprocessor machines. On a singleprocessor machine, the kernel
2141 will run faster if you say N here.
2143 People using multiprocessor machines who say Y here should also say
2144 Y to "Enhanced Real Time Clock Support", below.
2146 See also the SMP-HOWTO available at
2147 <http://www.tldp.org/docs.html#howto>.
2149 If you don't know what to do here, say N.
2154 config SYS_SUPPORTS_MIPS_CMP
2157 config SYS_SUPPORTS_SMP
2160 config NR_CPUS_DEFAULT_4
2163 config NR_CPUS_DEFAULT_8
2166 config NR_CPUS_DEFAULT_16
2169 config NR_CPUS_DEFAULT_32
2172 config NR_CPUS_DEFAULT_64
2176 int "Maximum number of CPUs (2-64)"
2179 default "4" if NR_CPUS_DEFAULT_4
2180 default "8" if NR_CPUS_DEFAULT_8
2181 default "16" if NR_CPUS_DEFAULT_16
2182 default "32" if NR_CPUS_DEFAULT_32
2183 default "64" if NR_CPUS_DEFAULT_64
2185 This allows you to specify the maximum number of CPUs which this
2186 kernel will support. The maximum supported value is 32 for 32-bit
2187 kernel and 64 for 64-bit kernels; the minimum value which makes
2188 sense is 1 for Qemu (useful only for kernel debugging purposes)
2189 and 2 for all others.
2191 This is purely to save memory - each supported CPU adds
2192 approximately eight kilobytes to the kernel image. For best
2193 performance should round up your number of processors to the next
2196 config MIPS_PERF_SHARED_TC_COUNTERS
2200 # Timer Interrupt Frequency Configuration
2204 prompt "Timer frequency"
2207 Allows the configuration of the timer frequency.
2210 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2213 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2216 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2219 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2222 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2225 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2228 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2232 config SYS_SUPPORTS_48HZ
2235 config SYS_SUPPORTS_100HZ
2238 config SYS_SUPPORTS_128HZ
2241 config SYS_SUPPORTS_250HZ
2244 config SYS_SUPPORTS_256HZ
2247 config SYS_SUPPORTS_1000HZ
2250 config SYS_SUPPORTS_1024HZ
2253 config SYS_SUPPORTS_ARBIT_HZ
2255 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2256 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2257 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2258 !SYS_SUPPORTS_1024HZ
2263 default 100 if HZ_100
2264 default 128 if HZ_128
2265 default 250 if HZ_250
2266 default 256 if HZ_256
2267 default 1000 if HZ_1000
2268 default 1024 if HZ_1024
2270 source "kernel/Kconfig.preempt"
2273 bool "Kexec system call"
2275 kexec is a system call that implements the ability to shutdown your
2276 current kernel, and to start another kernel. It is like a reboot
2277 but it is independent of the system firmware. And like a reboot
2278 you can start any kernel with it, not just Linux.
2280 The name comes from the similarity to the exec system call.
2282 It is an ongoing process to be certain the hardware in a machine
2283 is properly shutdown, so do not be surprised if this code does not
2284 initially work for you. As of this writing the exact hardware
2285 interface is strongly in flux, so no good recommendation can be
2289 bool "Kernel crash dumps"
2291 Generate crash dump after being started by kexec.
2292 This should be normally only set in special crash dump kernels
2293 which are loaded in the main kernel with kexec-tools into
2294 a specially reserved region and then later executed after
2295 a crash by kdump/kexec. The crash dump kernel must be compiled
2296 to a memory address not used by the main kernel or firmware using
2299 config PHYSICAL_START
2300 hex "Physical address where the kernel is loaded"
2301 default "0xffffffff84000000" if 64BIT
2302 default "0x84000000" if 32BIT
2303 depends on CRASH_DUMP
2305 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2306 If you plan to use kernel for capturing the crash dump change
2307 this value to start of the reserved region (the "X" value as
2308 specified in the "crashkernel=YM@XM" command line boot parameter
2309 passed to the panic-ed kernel).
2312 bool "Enable seccomp to safely compute untrusted bytecode"
2316 This kernel feature is useful for number crunching applications
2317 that may need to compute untrusted bytecode during their
2318 execution. By using pipes or other transports made available to
2319 the process as file descriptors supporting the read/write
2320 syscalls, it's possible to isolate those applications in
2321 their own address space using seccomp. Once seccomp is
2322 enabled via /proc/<pid>/seccomp, it cannot be disabled
2323 and the task is only allowed to execute a few safe syscalls
2324 defined by each seccomp mode.
2326 If unsure, say Y. Only embedded should say N here.
2328 config CC_STACKPROTECTOR
2329 bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
2331 This option turns on the -fstack-protector GCC feature. This
2332 feature puts, at the beginning of functions, a canary value on
2333 the stack just before the return address, and validates
2334 the value just before actually returning. Stack based buffer
2335 overflows (that need to overwrite this return address) now also
2336 overwrite the canary, which gets detected and the attack is then
2337 neutralized via a kernel panic.
2339 This feature requires gcc version 4.2 or above.
2341 config MIPS_O32_FP64_SUPPORT
2342 bool "Support for O32 binaries using 64-bit FP"
2343 depends on 32BIT || MIPS32_O32
2346 When this is enabled, the kernel will support use of 64-bit floating
2347 point registers with binaries using the O32 ABI along with the
2348 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2349 32-bit MIPS systems this support is at the cost of increasing the
2350 size and complexity of the compiled FPU emulator. Thus if you are
2351 running a MIPS32 system and know that none of your userland binaries
2352 will require 64-bit floating point, you may wish to reduce the size
2353 of your kernel & potentially improve FP emulation performance by
2361 select OF_EARLY_FLATTREE
2366 config LOCKDEP_SUPPORT
2370 config STACKTRACE_SUPPORT
2374 source "init/Kconfig"
2376 source "kernel/Kconfig.freezer"
2378 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2386 bool "Support for PCI controller"
2387 depends on HW_HAS_PCI
2389 select NO_GENERIC_PCI_IOPORT_MAP
2391 Find out whether you have a PCI motherboard. PCI is the name of a
2392 bus system, i.e. the way the CPU talks to the other stuff inside
2393 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2399 source "drivers/pci/Kconfig"
2401 source "drivers/pci/pcie/Kconfig"
2404 # ISA support is now enabled via select. Too many systems still have the one
2405 # or other ISA chip on the board that users don't know about so don't expect
2406 # users to choose the right thing ...
2413 depends on HW_HAS_EISA
2415 select GENERIC_ISA_DMA
2417 The Extended Industry Standard Architecture (EISA) bus was
2418 developed as an open alternative to the IBM MicroChannel bus.
2420 The EISA bus provided some of the features of the IBM MicroChannel
2421 bus while maintaining backward compatibility with cards made for
2422 the older ISA bus. The EISA bus saw limited use between 1988 and
2423 1995 when it was made obsolete by the PCI bus.
2425 Say Y here if you are building a kernel for an EISA-based machine.
2429 source "drivers/eisa/Kconfig"
2432 bool "TURBOchannel support"
2433 depends on MACH_DECSTATION
2435 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2436 processors. TURBOchannel programming specifications are available
2438 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2440 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2441 Linux driver support status is documented at:
2442 <http://www.linux-mips.org/wiki/DECstation>
2452 select MIPS_EXTERNAL_TIMER
2460 source "drivers/pcmcia/Kconfig"
2462 source "drivers/pci/hotplug/Kconfig"
2465 bool "RapidIO support"
2469 If you say Y here, the kernel will include drivers and
2470 infrastructure code to support RapidIO interconnect devices.
2472 source "drivers/rapidio/Kconfig"
2476 menu "Executable file formats"
2478 source "fs/Kconfig.binfmt"
2483 config MIPS32_COMPAT
2484 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2487 Select this option if you want Linux/MIPS 32-bit binary
2488 compatibility. Since all software available for Linux/MIPS is
2489 currently 32-bit you should say Y here.
2493 depends on MIPS32_COMPAT
2494 select ARCH_WANT_OLD_COMPAT_IPC
2497 config SYSVIPC_COMPAT
2499 depends on COMPAT && SYSVIPC
2503 bool "Kernel support for o32 binaries"
2504 depends on MIPS32_COMPAT
2506 Select this option if you want to run o32 binaries. These are pure
2507 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2508 existing binaries are in this format.
2513 bool "Kernel support for n32 binaries"
2514 depends on MIPS32_COMPAT
2516 Select this option if you want to run n32 binaries. These are
2517 64-bit binaries using 32-bit quantities for addressing and certain
2518 data that would normally be 64-bit. They are used in special
2525 default y if MIPS32_O32 || MIPS32_N32
2529 menu "Power management options"
2531 config ARCH_HIBERNATION_POSSIBLE
2533 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2535 config ARCH_SUSPEND_POSSIBLE
2537 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2539 source "kernel/power/Kconfig"
2543 config MIPS_EXTERNAL_TIMER
2546 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2547 menu "CPU Power Management"
2548 source "drivers/cpufreq/Kconfig"
2552 source "net/Kconfig"
2554 source "drivers/Kconfig"
2556 source "drivers/firmware/Kconfig"
2560 source "arch/mips/Kconfig.debug"
2562 source "security/Kconfig"
2564 source "crypto/Kconfig"
2566 source "lib/Kconfig"
2568 source "arch/mips/kvm/Kconfig"