4 select ARCH_MIGHT_HAVE_PC_PARPORT
5 select ARCH_MIGHT_HAVE_PC_SERIO
6 select HAVE_CONTEXT_TRACKING
7 select HAVE_GENERIC_DMA_COHERENT
10 select HAVE_PERF_EVENTS
11 select PERF_USE_VMALLOC
13 select HAVE_ARCH_TRACEHOOK
14 select ARCH_HAVE_CUSTOM_GPIO_H
15 select HAVE_FUNCTION_TRACER
16 select HAVE_FUNCTION_TRACE_MCOUNT_TEST
17 select HAVE_DYNAMIC_FTRACE
18 select HAVE_FTRACE_MCOUNT_RECORD
19 select HAVE_C_RECORDMCOUNT
20 select HAVE_FUNCTION_GRAPH_TRACER
22 select HAVE_KRETPROBES
23 select HAVE_DEBUG_KMEMLEAK
24 select HAVE_SYSCALL_TRACEPOINTS
25 select ARCH_BINFMT_ELF_RANDOMIZE_PIE
26 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
27 select RTC_LIB if !MACH_LOONGSON
28 select GENERIC_ATOMIC64 if !64BIT
29 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
31 select HAVE_DMA_API_DEBUG
32 select GENERIC_IRQ_PROBE
33 select GENERIC_IRQ_SHOW
34 select GENERIC_PCI_IOMAP
35 select HAVE_ARCH_JUMP_LABEL
36 select ARCH_WANT_IPC_PARSE_VERSION
37 select IRQ_FORCED_THREADING
39 select HAVE_MEMBLOCK_NODE_MAP
40 select ARCH_DISCARD_MEMBLOCK
41 select GENERIC_SMP_IDLE_THREAD
42 select BUILDTIME_EXTABLE_SORT
43 select GENERIC_CLOCKEVENTS
44 select GENERIC_CMOS_UPDATE
45 select HAVE_MOD_ARCH_SPECIFIC
47 select MODULES_USE_ELF_REL if MODULES
48 select MODULES_USE_ELF_RELA if MODULES && 64BIT
49 select CLONE_BACKWARDS
50 select HAVE_DEBUG_STACKOVERFLOW
51 select HAVE_CC_STACKPROTECTOR
53 menu "Machine selection"
60 bool "Alchemy processor based machines"
61 select 64BIT_PHYS_ADDR
65 select SYS_HAS_CPU_MIPS32_R1
66 select SYS_SUPPORTS_32BIT_KERNEL
67 select SYS_SUPPORTS_APM_EMULATION
68 select ARCH_REQUIRE_GPIOLIB
69 select SYS_SUPPORTS_ZBOOT
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
141 select MIPS_L1_CACHE_SHIFT_4
143 Support for BCM63XX based boards
150 select DMA_NONCOHERENT
151 select EARLY_PRINTK_8250 if EARLY_PRINTK
157 select PCI_GT64XXX_PCI0
159 select SYS_HAS_CPU_NEVADA
160 select SYS_HAS_EARLY_PRINTK
161 select SYS_SUPPORTS_32BIT_KERNEL
162 select SYS_SUPPORTS_64BIT_KERNEL
163 select SYS_SUPPORTS_LITTLE_ENDIAN
165 config MACH_DECSTATION
172 select CPU_DADDI_WORKAROUNDS if 64BIT
173 select CPU_R4000_WORKAROUNDS if 64BIT
174 select CPU_R4400_WORKAROUNDS if 64BIT
175 select DMA_NONCOHERENT
178 select SYS_HAS_CPU_R3000
179 select SYS_HAS_CPU_R4X00
180 select SYS_SUPPORTS_32BIT_KERNEL
181 select SYS_SUPPORTS_64BIT_KERNEL
182 select SYS_SUPPORTS_LITTLE_ENDIAN
183 select SYS_SUPPORTS_128HZ
184 select SYS_SUPPORTS_256HZ
185 select SYS_SUPPORTS_1024HZ
186 select MIPS_L1_CACHE_SHIFT_4
188 This enables support for DEC's MIPS based workstations. For details
189 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
190 DECstation porting pages on <http://decstation.unix-ag.org/>.
192 If you have one of the following DECstation Models you definitely
193 want to choose R4xx0 for the CPU Type:
200 otherwise choose R3000.
203 bool "Jazz family of machines"
206 select ARCH_MAY_HAVE_PC_FDC
209 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
210 select GENERIC_ISA_DMA
211 select HAVE_PCSPKR_PLATFORM
216 select SYS_HAS_CPU_R4X00
217 select SYS_SUPPORTS_32BIT_KERNEL
218 select SYS_SUPPORTS_64BIT_KERNEL
219 select SYS_SUPPORTS_100HZ
221 This a family of machines based on the MIPS R4030 chipset which was
222 used by several vendors to build RISC/os and Windows NT workstations.
223 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
224 Olivetti M700-10 workstations.
227 bool "Ingenic JZ4740 based machines"
228 select SYS_HAS_CPU_MIPS32_R1
229 select SYS_SUPPORTS_32BIT_KERNEL
230 select SYS_SUPPORTS_LITTLE_ENDIAN
231 select SYS_SUPPORTS_ZBOOT_UART16550
232 select DMA_NONCOHERENT
234 select ARCH_REQUIRE_GPIOLIB
235 select SYS_HAS_EARLY_PRINTK
238 select GENERIC_IRQ_CHIP
241 bool "Lantiq based platforms"
242 select DMA_NONCOHERENT
246 select SYS_HAS_CPU_MIPS32_R1
247 select SYS_HAS_CPU_MIPS32_R2
248 select SYS_SUPPORTS_BIG_ENDIAN
249 select SYS_SUPPORTS_32BIT_KERNEL
250 select SYS_SUPPORTS_MULTITHREADING
251 select SYS_HAS_EARLY_PRINTK
252 select ARCH_REQUIRE_GPIOLIB
255 select HAVE_MACH_CLKDEV
259 select PINCTRL_LANTIQ
262 bool "LASAT Networks platforms"
265 select DMA_NONCOHERENT
266 select SYS_HAS_EARLY_PRINTK
269 select PCI_GT64XXX_PCI0
271 select R5000_CPU_SCACHE
272 select SYS_HAS_CPU_R5000
273 select SYS_SUPPORTS_32BIT_KERNEL
274 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
275 select SYS_SUPPORTS_LITTLE_ENDIAN
278 bool "Loongson family of machines"
279 select SYS_SUPPORTS_ZBOOT
281 This enables the support of Loongson family of machines.
283 Loongson is a family of general-purpose MIPS-compatible CPUs.
284 developed at Institute of Computing Technology (ICT),
285 Chinese Academy of Sciences (CAS) in the People's Republic
286 of China. The chief architect is Professor Weiwu Hu.
288 config MACH_LOONGSON1
289 bool "Loongson 1 family of machines"
290 select SYS_SUPPORTS_ZBOOT
292 This enables support for the Loongson 1 based machines.
294 Loongson 1 is a family of 32-bit MIPS-compatible SoCs developed by
295 the ICT (Institute of Computing Technology) and the Chinese Academy
299 bool "MIPS Malta board"
300 select ARCH_MAY_HAVE_PC_FDC
306 select DMA_MAYBE_COHERENT
307 select GENERIC_ISA_DMA
308 select HAVE_PCSPKR_PLATFORM
315 select MIPS_CPU_SCACHE
316 select PCI_GT64XXX_PCI0
319 select SYS_HAS_CPU_MIPS32_R1
320 select SYS_HAS_CPU_MIPS32_R2
321 select SYS_HAS_CPU_MIPS64_R1
322 select SYS_HAS_CPU_MIPS64_R2
323 select SYS_HAS_CPU_NEVADA
324 select SYS_HAS_CPU_RM7000
325 select SYS_SUPPORTS_32BIT_KERNEL
326 select SYS_SUPPORTS_64BIT_KERNEL
327 select SYS_SUPPORTS_BIG_ENDIAN
328 select SYS_SUPPORTS_LITTLE_ENDIAN
329 select SYS_SUPPORTS_MIPS_CMP
330 select SYS_SUPPORTS_MULTITHREADING
331 select SYS_SUPPORTS_SMARTMIPS
332 select SYS_SUPPORTS_ZBOOT
334 This enables support for the MIPS Technologies Malta evaluation
338 bool "MIPS SEAD3 board"
344 select CPU_MIPSR2_IRQ_VI
345 select CPU_MIPSR2_IRQ_EI
346 select DMA_NONCOHERENT
351 select SYS_HAS_CPU_MIPS32_R1
352 select SYS_HAS_CPU_MIPS32_R2
353 select SYS_HAS_CPU_MIPS64_R1
354 select SYS_HAS_EARLY_PRINTK
355 select SYS_SUPPORTS_32BIT_KERNEL
356 select SYS_SUPPORTS_64BIT_KERNEL
357 select SYS_SUPPORTS_BIG_ENDIAN
358 select SYS_SUPPORTS_LITTLE_ENDIAN
359 select SYS_SUPPORTS_SMARTMIPS
360 select SYS_SUPPORTS_MICROMIPS
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
719 select ARCH_REQUIRE_GPIOLIB
721 This option supports all of the Octeon reference boards from Cavium
722 Networks. It builds a kernel that dynamically determines the Octeon
723 CPU type and supports all known board reference implementations.
724 Some of the supported boards are:
731 Say Y here for most Octeon reference boards.
734 bool "Netlogic XLR/XLS based systems"
737 select SYS_HAS_CPU_XLR
738 select SYS_SUPPORTS_SMP
741 select SYS_SUPPORTS_32BIT_KERNEL
742 select SYS_SUPPORTS_64BIT_KERNEL
743 select 64BIT_PHYS_ADDR
744 select SYS_SUPPORTS_BIG_ENDIAN
745 select SYS_SUPPORTS_HIGHMEM
747 select NR_CPUS_DEFAULT_32
751 select ZONE_DMA32 if 64BIT
753 select SYS_HAS_EARLY_PRINTK
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 ARCH_SUPPORTS_MSI
779 select ZONE_DMA32 if 64BIT
781 select SYS_HAS_EARLY_PRINTK
783 select SYS_SUPPORTS_ZBOOT
784 select SYS_SUPPORTS_ZBOOT_UART16550
786 This board is based on Netlogic XLP Processor.
787 Say Y here if you have a XLP based board.
791 source "arch/mips/alchemy/Kconfig"
792 source "arch/mips/ath79/Kconfig"
793 source "arch/mips/bcm47xx/Kconfig"
794 source "arch/mips/bcm63xx/Kconfig"
795 source "arch/mips/jazz/Kconfig"
796 source "arch/mips/jz4740/Kconfig"
797 source "arch/mips/lantiq/Kconfig"
798 source "arch/mips/lasat/Kconfig"
799 source "arch/mips/pmcs-msp71xx/Kconfig"
800 source "arch/mips/ralink/Kconfig"
801 source "arch/mips/sgi-ip27/Kconfig"
802 source "arch/mips/sibyte/Kconfig"
803 source "arch/mips/txx9/Kconfig"
804 source "arch/mips/vr41xx/Kconfig"
805 source "arch/mips/cavium-octeon/Kconfig"
806 source "arch/mips/loongson/Kconfig"
807 source "arch/mips/loongson1/Kconfig"
808 source "arch/mips/netlogic/Kconfig"
812 config RWSEM_GENERIC_SPINLOCK
816 config RWSEM_XCHGADD_ALGORITHM
819 config ARCH_HAS_ILOG2_U32
823 config ARCH_HAS_ILOG2_U64
827 config GENERIC_HWEIGHT
831 config GENERIC_CALIBRATE_DELAY
835 config SCHED_OMIT_FRAME_POINTER
840 # Select some configuration options automatically based on user selections.
845 config ARCH_MAY_HAVE_PC_FDC
888 select ARCH_REQUIRE_GPIOLIB
894 config ARCH_DMA_ADDR_T_64BIT
895 def_bool (HIGHMEM && 64BIT_PHYS_ADDR) || 64BIT
897 config DMA_MAYBE_COHERENT
898 select DMA_NONCOHERENT
904 config DMA_NONCOHERENT
906 select NEED_DMA_MAP_STATE
908 config NEED_DMA_MAP_STATE
911 config SYS_HAS_EARLY_PRINTK
915 bool "Support for hot-pluggable CPUs"
916 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
918 Say Y here to allow turning CPUs off and on. CPUs can be
919 controlled through /sys/devices/system/cpu.
920 (Note: power management support will enable this option
921 automatically on SMP systems. )
922 Say N if you want to disable CPU hotplug.
924 config SYS_SUPPORTS_HOTPLUG_CPU
948 config GENERIC_ISA_DMA
950 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
953 config GENERIC_ISA_DMA_SUPPORT_BROKEN
955 select GENERIC_ISA_DMA
964 # Endianness selection. Sufficiently obscure so many users don't know what to
965 # answer,so we try hard to limit the available choices. Also the use of a
966 # choice statement should be more obvious to the user.
969 prompt "Endianness selection"
971 Some MIPS machines can be configured for either little or big endian
972 byte order. These modes require different kernels and a different
973 Linux distribution. In general there is one preferred byteorder for a
974 particular system but some systems are just as commonly used in the
975 one or the other endianness.
977 config CPU_BIG_ENDIAN
979 depends on SYS_SUPPORTS_BIG_ENDIAN
981 config CPU_LITTLE_ENDIAN
983 depends on SYS_SUPPORTS_LITTLE_ENDIAN
990 config SYS_SUPPORTS_APM_EMULATION
993 config SYS_SUPPORTS_BIG_ENDIAN
996 config SYS_SUPPORTS_LITTLE_ENDIAN
999 config SYS_SUPPORTS_HUGETLBFS
1001 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1004 config MIPS_HUGE_TLB_SUPPORT
1005 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1028 config PCI_GT64XXX_PCI0
1031 config NO_EXCEPT_FILL
1038 select DMA_NONCOHERENT
1040 select SWAP_IO_SPACE
1041 select SYS_HAS_CPU_R5500
1042 select SYS_SUPPORTS_32BIT_KERNEL
1043 select SYS_SUPPORTS_64BIT_KERNEL
1044 select SYS_SUPPORTS_BIG_ENDIAN
1051 select DMA_NONCOHERENT
1052 select SYS_HAS_CPU_MIPS32_R2
1053 select SYS_SUPPORTS_32BIT_KERNEL
1054 select SYS_SUPPORTS_LITTLE_ENDIAN
1055 select SYS_SUPPORTS_BIG_ENDIAN
1056 select CPU_MIPSR2_IRQ_VI
1062 config SWAP_IO_SPACE
1065 config SGI_HAS_INDYDOG
1077 config SGI_HAS_ZILOG
1080 config SGI_HAS_I8042
1083 config DEFAULT_SGI_PARTITION
1095 config MIPS_L1_CACHE_SHIFT_4
1098 config MIPS_L1_CACHE_SHIFT_5
1101 config MIPS_L1_CACHE_SHIFT_6
1104 config MIPS_L1_CACHE_SHIFT_7
1107 config MIPS_L1_CACHE_SHIFT
1109 default "4" if MIPS_L1_CACHE_SHIFT_4
1110 default "5" if MIPS_L1_CACHE_SHIFT_5
1111 default "6" if MIPS_L1_CACHE_SHIFT_6
1112 default "7" if MIPS_L1_CACHE_SHIFT_7
1115 config HAVE_STD_PC_SERIAL_PORT
1119 bool "ARC console support"
1120 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1124 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1129 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1138 menu "CPU selection"
1144 config CPU_LOONGSON2E
1146 depends on SYS_HAS_CPU_LOONGSON2E
1147 select CPU_LOONGSON2
1149 The Loongson 2E processor implements the MIPS III instruction set
1150 with many extensions.
1152 It has an internal FPGA northbridge, which is compatible to
1155 config CPU_LOONGSON2F
1157 depends on SYS_HAS_CPU_LOONGSON2F
1158 select CPU_LOONGSON2
1159 select ARCH_REQUIRE_GPIOLIB
1161 The Loongson 2F processor implements the MIPS III instruction set
1162 with many extensions.
1164 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1165 have a similar programming interface with FPGA northbridge used in
1168 config CPU_LOONGSON1B
1170 depends on SYS_HAS_CPU_LOONGSON1B
1171 select CPU_LOONGSON1
1173 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1174 release 2 instruction set.
1176 config CPU_MIPS32_R1
1177 bool "MIPS32 Release 1"
1178 depends on SYS_HAS_CPU_MIPS32_R1
1179 select CPU_HAS_PREFETCH
1180 select CPU_SUPPORTS_32BIT_KERNEL
1181 select CPU_SUPPORTS_HIGHMEM
1183 Choose this option to build a kernel for release 1 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.
1188 Release 2 of the MIPS32 architecture is available since several
1189 years so chances are you even have a MIPS32 Release 2 processor
1190 in which case you should choose CPU_MIPS32_R2 instead for better
1193 config CPU_MIPS32_R2
1194 bool "MIPS32 Release 2"
1195 depends on SYS_HAS_CPU_MIPS32_R2
1196 select CPU_HAS_PREFETCH
1197 select CPU_SUPPORTS_32BIT_KERNEL
1198 select CPU_SUPPORTS_HIGHMEM
1201 Choose this option to build a kernel for release 2 or later of the
1202 MIPS32 architecture. Most modern embedded systems with a 32-bit
1203 MIPS processor are based on a MIPS32 processor. If you know the
1204 specific type of processor in your system, choose those that one
1205 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1207 config CPU_MIPS64_R1
1208 bool "MIPS64 Release 1"
1209 depends on SYS_HAS_CPU_MIPS64_R1
1210 select CPU_HAS_PREFETCH
1211 select CPU_SUPPORTS_32BIT_KERNEL
1212 select CPU_SUPPORTS_64BIT_KERNEL
1213 select CPU_SUPPORTS_HIGHMEM
1214 select CPU_SUPPORTS_HUGEPAGES
1216 Choose this option to build a kernel for release 1 or later of the
1217 MIPS64 architecture. Many modern embedded systems with a 64-bit
1218 MIPS processor are based on a MIPS64 processor. If you know the
1219 specific type of processor in your system, choose those that one
1220 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1221 Release 2 of the MIPS64 architecture is available since several
1222 years so chances are you even have a MIPS64 Release 2 processor
1223 in which case you should choose CPU_MIPS64_R2 instead for better
1226 config CPU_MIPS64_R2
1227 bool "MIPS64 Release 2"
1228 depends on SYS_HAS_CPU_MIPS64_R2
1229 select CPU_HAS_PREFETCH
1230 select CPU_SUPPORTS_32BIT_KERNEL
1231 select CPU_SUPPORTS_64BIT_KERNEL
1232 select CPU_SUPPORTS_HIGHMEM
1233 select CPU_SUPPORTS_HUGEPAGES
1235 Choose this option to build a kernel for release 2 or later of the
1236 MIPS64 architecture. Many modern embedded systems with a 64-bit
1237 MIPS processor are based on a MIPS64 processor. If you know the
1238 specific type of processor in your system, choose those that one
1239 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1243 depends on SYS_HAS_CPU_R3000
1245 select CPU_SUPPORTS_32BIT_KERNEL
1246 select CPU_SUPPORTS_HIGHMEM
1248 Please make sure to pick the right CPU type. Linux/MIPS is not
1249 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1250 *not* work on R4000 machines and vice versa. However, since most
1251 of the supported machines have an R4000 (or similar) CPU, R4x00
1252 might be a safe bet. If the resulting kernel does not work,
1253 try to recompile with R3000.
1257 depends on SYS_HAS_CPU_TX39XX
1258 select CPU_SUPPORTS_32BIT_KERNEL
1262 depends on SYS_HAS_CPU_VR41XX
1263 select CPU_SUPPORTS_32BIT_KERNEL
1264 select CPU_SUPPORTS_64BIT_KERNEL
1266 The options selects support for the NEC VR4100 series of processors.
1267 Only choose this option if you have one of these processors as a
1268 kernel built with this option will not run on any other type of
1269 processor or vice versa.
1273 depends on SYS_HAS_CPU_R4300
1274 select CPU_SUPPORTS_32BIT_KERNEL
1275 select CPU_SUPPORTS_64BIT_KERNEL
1277 MIPS Technologies R4300-series processors.
1281 depends on SYS_HAS_CPU_R4X00
1282 select CPU_SUPPORTS_32BIT_KERNEL
1283 select CPU_SUPPORTS_64BIT_KERNEL
1284 select CPU_SUPPORTS_HUGEPAGES
1286 MIPS Technologies R4000-series processors other than 4300, including
1287 the R4000, R4400, R4600, and 4700.
1291 depends on SYS_HAS_CPU_TX49XX
1292 select CPU_HAS_PREFETCH
1293 select CPU_SUPPORTS_32BIT_KERNEL
1294 select CPU_SUPPORTS_64BIT_KERNEL
1295 select CPU_SUPPORTS_HUGEPAGES
1299 depends on SYS_HAS_CPU_R5000
1300 select CPU_SUPPORTS_32BIT_KERNEL
1301 select CPU_SUPPORTS_64BIT_KERNEL
1302 select CPU_SUPPORTS_HUGEPAGES
1304 MIPS Technologies R5000-series processors other than the Nevada.
1308 depends on SYS_HAS_CPU_R5432
1309 select CPU_SUPPORTS_32BIT_KERNEL
1310 select CPU_SUPPORTS_64BIT_KERNEL
1311 select CPU_SUPPORTS_HUGEPAGES
1315 depends on SYS_HAS_CPU_R5500
1316 select CPU_SUPPORTS_32BIT_KERNEL
1317 select CPU_SUPPORTS_64BIT_KERNEL
1318 select CPU_SUPPORTS_HUGEPAGES
1320 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1325 depends on SYS_HAS_CPU_R6000
1326 select CPU_SUPPORTS_32BIT_KERNEL
1328 MIPS Technologies R6000 and R6000A series processors. Note these
1329 processors are extremely rare and the support for them is incomplete.
1333 depends on SYS_HAS_CPU_NEVADA
1334 select CPU_SUPPORTS_32BIT_KERNEL
1335 select CPU_SUPPORTS_64BIT_KERNEL
1336 select CPU_SUPPORTS_HUGEPAGES
1338 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1342 depends on SYS_HAS_CPU_R8000
1343 select CPU_HAS_PREFETCH
1344 select CPU_SUPPORTS_64BIT_KERNEL
1346 MIPS Technologies R8000 processors. Note these processors are
1347 uncommon and the support for them is incomplete.
1351 depends on SYS_HAS_CPU_R10000
1352 select CPU_HAS_PREFETCH
1353 select CPU_SUPPORTS_32BIT_KERNEL
1354 select CPU_SUPPORTS_64BIT_KERNEL
1355 select CPU_SUPPORTS_HIGHMEM
1356 select CPU_SUPPORTS_HUGEPAGES
1358 MIPS Technologies R10000-series processors.
1362 depends on SYS_HAS_CPU_RM7000
1363 select CPU_HAS_PREFETCH
1364 select CPU_SUPPORTS_32BIT_KERNEL
1365 select CPU_SUPPORTS_64BIT_KERNEL
1366 select CPU_SUPPORTS_HIGHMEM
1367 select CPU_SUPPORTS_HUGEPAGES
1371 depends on SYS_HAS_CPU_SB1
1372 select CPU_SUPPORTS_32BIT_KERNEL
1373 select CPU_SUPPORTS_64BIT_KERNEL
1374 select CPU_SUPPORTS_HIGHMEM
1375 select CPU_SUPPORTS_HUGEPAGES
1376 select WEAK_ORDERING
1378 config CPU_CAVIUM_OCTEON
1379 bool "Cavium Octeon processor"
1380 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1381 select ARCH_SPARSEMEM_ENABLE
1382 select CPU_HAS_PREFETCH
1383 select CPU_SUPPORTS_64BIT_KERNEL
1384 select SYS_SUPPORTS_SMP
1385 select NR_CPUS_DEFAULT_16
1386 select WEAK_ORDERING
1387 select CPU_SUPPORTS_HIGHMEM
1388 select CPU_SUPPORTS_HUGEPAGES
1391 select USB_EHCI_BIG_ENDIAN_MMIO
1392 select SYS_HAS_DMA_OPS
1393 select MIPS_L1_CACHE_SHIFT_7
1395 The Cavium Octeon processor is a highly integrated chip containing
1396 many ethernet hardware widgets for networking tasks. The processor
1397 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1398 Full details can be found at http://www.caviumnetworks.com.
1401 bool "Broadcom BMIPS"
1402 depends on SYS_HAS_CPU_BMIPS
1404 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1405 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1406 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1407 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1408 select CPU_SUPPORTS_32BIT_KERNEL
1409 select DMA_NONCOHERENT
1411 select SWAP_IO_SPACE
1412 select WEAK_ORDERING
1413 select CPU_SUPPORTS_HIGHMEM
1414 select CPU_HAS_PREFETCH
1416 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1419 bool "Netlogic XLR SoC"
1420 depends on SYS_HAS_CPU_XLR
1421 select CPU_SUPPORTS_32BIT_KERNEL
1422 select CPU_SUPPORTS_64BIT_KERNEL
1423 select CPU_SUPPORTS_HIGHMEM
1424 select CPU_SUPPORTS_HUGEPAGES
1425 select WEAK_ORDERING
1426 select WEAK_REORDERING_BEYOND_LLSC
1428 Netlogic Microsystems XLR/XLS processors.
1431 bool "Netlogic XLP SoC"
1432 depends on SYS_HAS_CPU_XLP
1433 select CPU_SUPPORTS_32BIT_KERNEL
1434 select CPU_SUPPORTS_64BIT_KERNEL
1435 select CPU_SUPPORTS_HIGHMEM
1436 select WEAK_ORDERING
1437 select WEAK_REORDERING_BEYOND_LLSC
1438 select CPU_HAS_PREFETCH
1441 Netlogic Microsystems XLP processors.
1445 config CPU_NOP_WORKAROUNDS
1448 config CPU_JUMP_WORKAROUNDS
1451 config CPU_LOONGSON2F_WORKAROUNDS
1452 bool "Loongson 2F Workarounds"
1454 select CPU_NOP_WORKAROUNDS
1455 select CPU_JUMP_WORKAROUNDS
1457 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1458 require workarounds. Without workarounds the system may hang
1459 unexpectedly. For more information please refer to the gas
1460 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1462 Loongson 2F03 and later have fixed these issues and no workarounds
1463 are needed. The workarounds have no significant side effect on them
1464 but may decrease the performance of the system so this option should
1465 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1468 If unsure, please say Y.
1469 endif # CPU_LOONGSON2F
1471 config SYS_SUPPORTS_ZBOOT
1473 select HAVE_KERNEL_GZIP
1474 select HAVE_KERNEL_BZIP2
1475 select HAVE_KERNEL_LZ4
1476 select HAVE_KERNEL_LZMA
1477 select HAVE_KERNEL_LZO
1478 select HAVE_KERNEL_XZ
1480 config SYS_SUPPORTS_ZBOOT_UART16550
1482 select SYS_SUPPORTS_ZBOOT
1484 config CPU_LOONGSON2
1486 select CPU_SUPPORTS_32BIT_KERNEL
1487 select CPU_SUPPORTS_64BIT_KERNEL
1488 select CPU_SUPPORTS_HIGHMEM
1489 select CPU_SUPPORTS_HUGEPAGES
1491 config CPU_LOONGSON1
1495 select CPU_HAS_PREFETCH
1496 select CPU_SUPPORTS_32BIT_KERNEL
1497 select CPU_SUPPORTS_HIGHMEM
1499 config CPU_BMIPS32_3300
1500 select SMP_UP if SMP
1503 config CPU_BMIPS4350
1505 select SYS_SUPPORTS_SMP
1506 select SYS_SUPPORTS_HOTPLUG_CPU
1508 config CPU_BMIPS4380
1510 select SYS_SUPPORTS_SMP
1511 select SYS_SUPPORTS_HOTPLUG_CPU
1513 config CPU_BMIPS5000
1515 select MIPS_CPU_SCACHE
1516 select SYS_SUPPORTS_SMP
1517 select SYS_SUPPORTS_HOTPLUG_CPU
1519 config SYS_HAS_CPU_LOONGSON2E
1522 config SYS_HAS_CPU_LOONGSON2F
1524 select CPU_SUPPORTS_CPUFREQ
1525 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1526 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1528 config SYS_HAS_CPU_LOONGSON1B
1531 config SYS_HAS_CPU_MIPS32_R1
1534 config SYS_HAS_CPU_MIPS32_R2
1537 config SYS_HAS_CPU_MIPS64_R1
1540 config SYS_HAS_CPU_MIPS64_R2
1543 config SYS_HAS_CPU_R3000
1546 config SYS_HAS_CPU_TX39XX
1549 config SYS_HAS_CPU_VR41XX
1552 config SYS_HAS_CPU_R4300
1555 config SYS_HAS_CPU_R4X00
1558 config SYS_HAS_CPU_TX49XX
1561 config SYS_HAS_CPU_R5000
1564 config SYS_HAS_CPU_R5432
1567 config SYS_HAS_CPU_R5500
1570 config SYS_HAS_CPU_R6000
1573 config SYS_HAS_CPU_NEVADA
1576 config SYS_HAS_CPU_R8000
1579 config SYS_HAS_CPU_R10000
1582 config SYS_HAS_CPU_RM7000
1585 config SYS_HAS_CPU_SB1
1588 config SYS_HAS_CPU_CAVIUM_OCTEON
1591 config SYS_HAS_CPU_BMIPS
1594 config SYS_HAS_CPU_BMIPS32_3300
1596 select SYS_HAS_CPU_BMIPS
1598 config SYS_HAS_CPU_BMIPS4350
1600 select SYS_HAS_CPU_BMIPS
1602 config SYS_HAS_CPU_BMIPS4380
1604 select SYS_HAS_CPU_BMIPS
1606 config SYS_HAS_CPU_BMIPS5000
1608 select SYS_HAS_CPU_BMIPS
1610 config SYS_HAS_CPU_XLR
1613 config SYS_HAS_CPU_XLP
1617 # CPU may reorder R->R, R->W, W->R, W->W
1618 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1620 config WEAK_ORDERING
1624 # CPU may reorder reads and writes beyond LL/SC
1625 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1627 config WEAK_REORDERING_BEYOND_LLSC
1632 # These two indicate any level of the MIPS32 and MIPS64 architecture
1636 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1640 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1643 # These two indicate the revision of the architecture, either Release 1 or Release 2
1647 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1651 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1653 config SYS_SUPPORTS_32BIT_KERNEL
1655 config SYS_SUPPORTS_64BIT_KERNEL
1657 config CPU_SUPPORTS_32BIT_KERNEL
1659 config CPU_SUPPORTS_64BIT_KERNEL
1661 config CPU_SUPPORTS_CPUFREQ
1663 config CPU_SUPPORTS_ADDRWINCFG
1665 config CPU_SUPPORTS_HUGEPAGES
1667 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1669 config MIPS_PGD_C0_CONTEXT
1671 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
1674 # Set to y for ptrace access to watch registers.
1676 config HARDWARE_WATCHPOINTS
1678 default y if CPU_MIPSR1 || CPU_MIPSR2
1683 prompt "Kernel code model"
1685 You should only select this option if you have a workload that
1686 actually benefits from 64-bit processing or if your machine has
1687 large memory. You will only be presented a single option in this
1688 menu if your system does not support both 32-bit and 64-bit kernels.
1691 bool "32-bit kernel"
1692 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1695 Select this option if you want to build a 32-bit kernel.
1697 bool "64-bit kernel"
1698 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1700 Select this option if you want to build a 64-bit kernel.
1705 bool "KVM Guest Kernel"
1706 depends on BROKEN_ON_SMP
1708 Select this option if building a guest kernel for KVM (Trap & Emulate) mode
1710 config KVM_HOST_FREQ
1711 int "KVM Host Processor Frequency (MHz)"
1712 depends on KVM_GUEST
1715 Select this option if building a guest kernel for KVM to skip
1716 RTC emulation when determining guest CPU Frequency. Instead, the guest
1717 processor frequency is automatically derived from the host frequency.
1720 prompt "Kernel page size"
1721 default PAGE_SIZE_4KB
1723 config PAGE_SIZE_4KB
1725 depends on !CPU_LOONGSON2
1727 This option select the standard 4kB Linux page size. On some
1728 R3000-family processors this is the only available page size. Using
1729 4kB page size will minimize memory consumption and is therefore
1730 recommended for low memory systems.
1732 config PAGE_SIZE_8KB
1734 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
1736 Using 8kB page size will result in higher performance kernel at
1737 the price of higher memory consumption. This option is available
1738 only on R8000 and cnMIPS processors. Note that you will need a
1739 suitable Linux distribution to support this.
1741 config PAGE_SIZE_16KB
1743 depends on !CPU_R3000 && !CPU_TX39XX
1745 Using 16kB page size will result in higher performance kernel at
1746 the price of higher memory consumption. This option is available on
1747 all non-R3000 family processors. Note that you will need a suitable
1748 Linux distribution to support this.
1750 config PAGE_SIZE_32KB
1752 depends on CPU_CAVIUM_OCTEON
1754 Using 32kB page size will result in higher performance kernel at
1755 the price of higher memory consumption. This option is available
1756 only on cnMIPS cores. Note that you will need a suitable Linux
1757 distribution to support this.
1759 config PAGE_SIZE_64KB
1761 depends on !CPU_R3000 && !CPU_TX39XX
1763 Using 64kB page size will result in higher performance kernel at
1764 the price of higher memory consumption. This option is available on
1765 all non-R3000 family processor. Not that at the time of this
1766 writing this option is still high experimental.
1770 config FORCE_MAX_ZONEORDER
1771 int "Maximum zone order"
1772 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
1773 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
1774 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
1775 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
1776 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
1777 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
1781 The kernel memory allocator divides physically contiguous memory
1782 blocks into "zones", where each zone is a power of two number of
1783 pages. This option selects the largest power of two that the kernel
1784 keeps in the memory allocator. If you need to allocate very large
1785 blocks of physically contiguous memory, then you may need to
1786 increase this value.
1788 This config option is actually maximum order plus one. For example,
1789 a value of 11 means that the largest free memory block is 2^10 pages.
1791 The page size is not necessarily 4KB. Keep this in mind
1792 when choosing a value for this option.
1795 bool "Use GIC global counter for clock events"
1796 depends on IRQ_GIC && !(MIPS_SEAD3 || MIPS_MT_SMTC)
1798 Use the GIC global counter for the clock events. The R4K clock
1799 event driver is always present, so if the platform ends up not
1800 detecting a GIC, it will fall back to the R4K timer for the
1801 generation of clock events.
1806 config IP22_CPU_SCACHE
1811 # Support for a MIPS32 / MIPS64 style S-caches
1813 config MIPS_CPU_SCACHE
1816 select MIPS_L1_CACHE_SHIFT_6
1818 config R5000_CPU_SCACHE
1822 config RM7000_CPU_SCACHE
1826 config SIBYTE_DMA_PAGEOPS
1827 bool "Use DMA to clear/copy pages"
1830 Instead of using the CPU to zero and copy pages, use a Data Mover
1831 channel. These DMA channels are otherwise unused by the standard
1832 SiByte Linux port. Seems to give a small performance benefit.
1834 config CPU_HAS_PREFETCH
1837 config CPU_GENERIC_DUMP_TLB
1839 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
1843 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1845 config CPU_R4K_CACHE_TLB
1847 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
1850 prompt "MIPS MT options"
1852 config MIPS_MT_DISABLED
1853 bool "Disable multithreading support"
1855 Use this option if your platform does not support the MT ASE
1856 which is hardware multithreading support. On systems without
1857 an MT-enabled processor, this will be the only option that is
1858 available in this menu.
1861 bool "Use 1 TC on each available VPE for SMP"
1862 depends on SYS_SUPPORTS_MULTITHREADING
1863 select CPU_MIPSR2_IRQ_VI
1864 select CPU_MIPSR2_IRQ_EI
1869 select SYS_SUPPORTS_SMP
1870 select SYS_SUPPORTS_SCHED_SMT
1871 select MIPS_PERF_SHARED_TC_COUNTERS
1873 This is a kernel model which is known as SMVP. This is supported
1874 on cores with the MT ASE and uses the available VPEs to implement
1875 virtual processors which supports SMP. This is equivalent to the
1876 Intel Hyperthreading feature. For further information go to
1877 <http://www.imgtec.com/mips/mips-multithreading.asp>.
1880 bool "Use all TCs on all VPEs for SMP (DEPRECATED)"
1881 depends on CPU_MIPS32_R2
1882 depends on SYS_SUPPORTS_MULTITHREADING
1883 select CPU_MIPSR2_IRQ_VI
1884 select CPU_MIPSR2_IRQ_EI
1888 select SYS_SUPPORTS_SMP
1889 select NR_CPUS_DEFAULT_8
1891 This is a kernel model which is known as SMTC. This is
1892 supported on cores with the MT ASE and presents all TCs
1893 available on all VPEs to support SMP. For further
1894 information see <http://www.linux-mips.org/wiki/34K#SMTC>.
1902 bool "SMT (multithreading) scheduler support"
1903 depends on SYS_SUPPORTS_SCHED_SMT
1906 SMT scheduler support improves the CPU scheduler's decision making
1907 when dealing with MIPS MT enabled cores at a cost of slightly
1908 increased overhead in some places. If unsure say N here.
1910 config SYS_SUPPORTS_SCHED_SMT
1913 config SYS_SUPPORTS_MULTITHREADING
1916 config MIPS_MT_FPAFF
1917 bool "Dynamic FPU affinity for FP-intensive threads"
1919 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1921 config MIPS_VPE_LOADER
1922 bool "VPE loader support."
1923 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
1924 select CPU_MIPSR2_IRQ_VI
1925 select CPU_MIPSR2_IRQ_EI
1928 Includes a loader for loading an elf relocatable object
1929 onto another VPE and running it.
1931 config MIPS_VPE_LOADER_CMP
1934 depends on MIPS_VPE_LOADER && MIPS_CMP
1936 config MIPS_VPE_LOADER_MT
1939 depends on MIPS_VPE_LOADER && !MIPS_CMP
1941 config MIPS_MT_SMTC_IM_BACKSTOP
1942 bool "Use per-TC register bits as backstop for inhibited IM bits"
1943 depends on MIPS_MT_SMTC
1946 To support multiple TC microthreads acting as "CPUs" within
1947 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1948 during interrupt handling. To support legacy drivers and interrupt
1949 controller management code, SMTC has a "backstop" to track and
1950 if necessary restore the interrupt mask. This has some performance
1951 impact on interrupt service overhead.
1953 config MIPS_MT_SMTC_IRQAFF
1954 bool "Support IRQ affinity API"
1955 depends on MIPS_MT_SMTC
1958 Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1959 for SMTC Linux kernel. Requires platform support, of which
1960 an example can be found in the MIPS kernel i8259 and Malta
1961 platform code. Adds some overhead to interrupt dispatch, and
1962 should be used only if you know what you are doing.
1964 config MIPS_VPE_LOADER_TOM
1965 bool "Load VPE program into memory hidden from linux"
1966 depends on MIPS_VPE_LOADER
1969 The loader can use memory that is present but has been hidden from
1970 Linux using the kernel command line option "mem=xxMB". It's up to
1971 you to ensure the amount you put in the option and the space your
1972 program requires is less or equal to the amount physically present.
1974 config MIPS_VPE_APSP_API
1975 bool "Enable support for AP/SP API (RTLX)"
1976 depends on MIPS_VPE_LOADER
1979 config MIPS_VPE_APSP_API_CMP
1982 depends on MIPS_VPE_APSP_API && MIPS_CMP
1984 config MIPS_VPE_APSP_API_MT
1987 depends on MIPS_VPE_APSP_API && !MIPS_CMP
1990 bool "MIPS CMP support"
1991 depends on SYS_SUPPORTS_MIPS_CMP && MIPS_MT_SMP
1993 select WEAK_ORDERING
1996 Enable Coherency Manager processor (CMP) support.
1998 config SB1_PASS_1_WORKAROUNDS
2000 depends on CPU_SB1_PASS_1
2003 config SB1_PASS_2_WORKAROUNDS
2005 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2008 config SB1_PASS_2_1_WORKAROUNDS
2010 depends on CPU_SB1 && CPU_SB1_PASS_2
2014 config 64BIT_PHYS_ADDR
2017 config ARCH_PHYS_ADDR_T_64BIT
2018 def_bool 64BIT_PHYS_ADDR
2020 config CPU_HAS_SMARTMIPS
2021 depends on SYS_SUPPORTS_SMARTMIPS
2022 bool "Support for the SmartMIPS ASE"
2024 SmartMIPS is a extension of the MIPS32 architecture aimed at
2025 increased security at both hardware and software level for
2026 smartcards. Enabling this option will allow proper use of the
2027 SmartMIPS instructions by Linux applications. However a kernel with
2028 this option will not work on a MIPS core without SmartMIPS core. If
2029 you don't know you probably don't have SmartMIPS and should say N
2032 config CPU_MICROMIPS
2033 depends on SYS_SUPPORTS_MICROMIPS
2034 bool "Build kernel using microMIPS ISA"
2036 When this option is enabled the kernel will be built using the
2046 # Vectored interrupt mode is an R2 feature
2048 config CPU_MIPSR2_IRQ_VI
2052 # Extended interrupt mode is an R2 feature
2054 config CPU_MIPSR2_IRQ_EI
2059 depends on !CPU_R3000
2065 config CPU_DADDI_WORKAROUNDS
2068 config CPU_R4000_WORKAROUNDS
2070 select CPU_R4400_WORKAROUNDS
2072 config CPU_R4400_WORKAROUNDS
2076 # - Highmem only makes sense for the 32-bit kernel.
2077 # - The current highmem code will only work properly on physically indexed
2078 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2079 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2080 # moment we protect the user and offer the highmem option only on machines
2081 # where it's known to be safe. This will not offer highmem on a few systems
2082 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2083 # indexed CPUs but we're playing safe.
2084 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2085 # know they might have memory configurations that could make use of highmem
2089 bool "High Memory Support"
2090 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
2092 config CPU_SUPPORTS_HIGHMEM
2095 config SYS_SUPPORTS_HIGHMEM
2098 config SYS_SUPPORTS_SMARTMIPS
2101 config SYS_SUPPORTS_MICROMIPS
2104 config ARCH_FLATMEM_ENABLE
2106 depends on !NUMA && !CPU_LOONGSON2
2108 config ARCH_DISCONTIGMEM_ENABLE
2110 default y if SGI_IP27
2112 Say Y to support efficient handling of discontiguous physical memory,
2113 for architectures which are either NUMA (Non-Uniform Memory Access)
2114 or have huge holes in the physical address space for other reasons.
2115 See <file:Documentation/vm/numa> for more.
2117 config ARCH_SPARSEMEM_ENABLE
2119 select SPARSEMEM_STATIC
2123 depends on SYS_SUPPORTS_NUMA
2125 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2126 Access). This option improves performance on systems with more
2127 than two nodes; on two node systems it is generally better to
2128 leave it disabled; on single node systems disable this option
2131 config SYS_SUPPORTS_NUMA
2137 depends on NEED_MULTIPLE_NODES
2139 config HW_PERF_EVENTS
2140 bool "Enable hardware performance counter support for perf events"
2141 depends on PERF_EVENTS && !MIPS_MT_SMTC && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP)
2144 Enable hardware performance counter support for perf events. If
2145 disabled, perf events will use software events only.
2150 bool "Multi-Processing support"
2151 depends on SYS_SUPPORTS_SMP
2153 This enables support for systems with more than one CPU. If you have
2154 a system with only one CPU, say N. If you have a system with more
2155 than one CPU, say Y.
2157 If you say N here, the kernel will run on uni- and multiprocessor
2158 machines, but will use only one CPU of a multiprocessor machine. If
2159 you say Y here, the kernel will run on many, but not all,
2160 uniprocessor machines. On a uniprocessor machine, the kernel
2161 will run faster if you say N here.
2163 People using multiprocessor machines who say Y here should also say
2164 Y to "Enhanced Real Time Clock Support", below.
2166 See also the SMP-HOWTO available at
2167 <http://www.tldp.org/docs.html#howto>.
2169 If you don't know what to do here, say N.
2174 config SYS_SUPPORTS_MIPS_CMP
2177 config SYS_SUPPORTS_SMP
2180 config NR_CPUS_DEFAULT_4
2183 config NR_CPUS_DEFAULT_8
2186 config NR_CPUS_DEFAULT_16
2189 config NR_CPUS_DEFAULT_32
2192 config NR_CPUS_DEFAULT_64
2196 int "Maximum number of CPUs (2-64)"
2199 default "4" if NR_CPUS_DEFAULT_4
2200 default "8" if NR_CPUS_DEFAULT_8
2201 default "16" if NR_CPUS_DEFAULT_16
2202 default "32" if NR_CPUS_DEFAULT_32
2203 default "64" if NR_CPUS_DEFAULT_64
2205 This allows you to specify the maximum number of CPUs which this
2206 kernel will support. The maximum supported value is 32 for 32-bit
2207 kernel and 64 for 64-bit kernels; the minimum value which makes
2208 sense is 1 for Qemu (useful only for kernel debugging purposes)
2209 and 2 for all others.
2211 This is purely to save memory - each supported CPU adds
2212 approximately eight kilobytes to the kernel image. For best
2213 performance should round up your number of processors to the next
2216 config MIPS_PERF_SHARED_TC_COUNTERS
2220 # Timer Interrupt Frequency Configuration
2224 prompt "Timer frequency"
2227 Allows the configuration of the timer frequency.
2230 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2233 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2236 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2239 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2242 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2245 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2248 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2252 config SYS_SUPPORTS_48HZ
2255 config SYS_SUPPORTS_100HZ
2258 config SYS_SUPPORTS_128HZ
2261 config SYS_SUPPORTS_250HZ
2264 config SYS_SUPPORTS_256HZ
2267 config SYS_SUPPORTS_1000HZ
2270 config SYS_SUPPORTS_1024HZ
2273 config SYS_SUPPORTS_ARBIT_HZ
2275 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
2276 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
2277 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
2278 !SYS_SUPPORTS_1024HZ
2283 default 100 if HZ_100
2284 default 128 if HZ_128
2285 default 250 if HZ_250
2286 default 256 if HZ_256
2287 default 1000 if HZ_1000
2288 default 1024 if HZ_1024
2290 source "kernel/Kconfig.preempt"
2293 bool "Kexec system call"
2295 kexec is a system call that implements the ability to shutdown your
2296 current kernel, and to start another kernel. It is like a reboot
2297 but it is independent of the system firmware. And like a reboot
2298 you can start any kernel with it, not just Linux.
2300 The name comes from the similarity to the exec system call.
2302 It is an ongoing process to be certain the hardware in a machine
2303 is properly shutdown, so do not be surprised if this code does not
2304 initially work for you. As of this writing the exact hardware
2305 interface is strongly in flux, so no good recommendation can be
2309 bool "Kernel crash dumps"
2311 Generate crash dump after being started by kexec.
2312 This should be normally only set in special crash dump kernels
2313 which are loaded in the main kernel with kexec-tools into
2314 a specially reserved region and then later executed after
2315 a crash by kdump/kexec. The crash dump kernel must be compiled
2316 to a memory address not used by the main kernel or firmware using
2319 config PHYSICAL_START
2320 hex "Physical address where the kernel is loaded"
2321 default "0xffffffff84000000" if 64BIT
2322 default "0x84000000" if 32BIT
2323 depends on CRASH_DUMP
2325 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2326 If you plan to use kernel for capturing the crash dump change
2327 this value to start of the reserved region (the "X" value as
2328 specified in the "crashkernel=YM@XM" command line boot parameter
2329 passed to the panic-ed kernel).
2332 bool "Enable seccomp to safely compute untrusted bytecode"
2336 This kernel feature is useful for number crunching applications
2337 that may need to compute untrusted bytecode during their
2338 execution. By using pipes or other transports made available to
2339 the process as file descriptors supporting the read/write
2340 syscalls, it's possible to isolate those applications in
2341 their own address space using seccomp. Once seccomp is
2342 enabled via /proc/<pid>/seccomp, it cannot be disabled
2343 and the task is only allowed to execute a few safe syscalls
2344 defined by each seccomp mode.
2346 If unsure, say Y. Only embedded should say N here.
2348 config MIPS_O32_FP64_SUPPORT
2349 bool "Support for O32 binaries using 64-bit FP (EXPERIMENTAL)"
2350 depends on 32BIT || MIPS32_O32
2352 When this is enabled, the kernel will support use of 64-bit floating
2353 point registers with binaries using the O32 ABI along with the
2354 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2355 32-bit MIPS systems this support is at the cost of increasing the
2356 size and complexity of the compiled FPU emulator. Thus if you are
2357 running a MIPS32 system and know that none of your userland binaries
2358 will require 64-bit floating point, you may wish to reduce the size
2359 of your kernel & potentially improve FP emulation performance by
2362 Although binutils currently supports use of this flag the details
2363 concerning its effect upon the O32 ABI in userland are still being
2364 worked on. In order to avoid userland becoming dependant upon current
2365 behaviour before the details have been finalised, this option should
2366 be considered experimental and only enabled by those working upon
2374 select OF_EARLY_FLATTREE
2379 config LOCKDEP_SUPPORT
2383 config STACKTRACE_SUPPORT
2387 source "init/Kconfig"
2389 source "kernel/Kconfig.freezer"
2391 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2399 bool "Support for PCI controller"
2400 depends on HW_HAS_PCI
2402 select NO_GENERIC_PCI_IOPORT_MAP
2404 Find out whether you have a PCI motherboard. PCI is the name of a
2405 bus system, i.e. the way the CPU talks to the other stuff inside
2406 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2412 source "drivers/pci/Kconfig"
2414 source "drivers/pci/pcie/Kconfig"
2417 # ISA support is now enabled via select. Too many systems still have the one
2418 # or other ISA chip on the board that users don't know about so don't expect
2419 # users to choose the right thing ...
2426 depends on HW_HAS_EISA
2428 select GENERIC_ISA_DMA
2430 The Extended Industry Standard Architecture (EISA) bus was
2431 developed as an open alternative to the IBM MicroChannel bus.
2433 The EISA bus provided some of the features of the IBM MicroChannel
2434 bus while maintaining backward compatibility with cards made for
2435 the older ISA bus. The EISA bus saw limited use between 1988 and
2436 1995 when it was made obsolete by the PCI bus.
2438 Say Y here if you are building a kernel for an EISA-based machine.
2442 source "drivers/eisa/Kconfig"
2445 bool "TURBOchannel support"
2446 depends on MACH_DECSTATION
2448 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2449 processors. TURBOchannel programming specifications are available
2451 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2453 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2454 Linux driver support status is documented at:
2455 <http://www.linux-mips.org/wiki/DECstation>
2465 select MIPS_EXTERNAL_TIMER
2473 source "drivers/pcmcia/Kconfig"
2475 source "drivers/pci/hotplug/Kconfig"
2478 tristate "RapidIO support"
2482 If you say Y here, the kernel will include drivers and
2483 infrastructure code to support RapidIO interconnect devices.
2485 source "drivers/rapidio/Kconfig"
2489 menu "Executable file formats"
2491 source "fs/Kconfig.binfmt"
2496 config MIPS32_COMPAT
2497 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2500 Select this option if you want Linux/MIPS 32-bit binary
2501 compatibility. Since all software available for Linux/MIPS is
2502 currently 32-bit you should say Y here.
2506 depends on MIPS32_COMPAT
2507 select ARCH_WANT_OLD_COMPAT_IPC
2510 config SYSVIPC_COMPAT
2512 depends on COMPAT && SYSVIPC
2516 bool "Kernel support for o32 binaries"
2517 depends on MIPS32_COMPAT
2519 Select this option if you want to run o32 binaries. These are pure
2520 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2521 existing binaries are in this format.
2526 bool "Kernel support for n32 binaries"
2527 depends on MIPS32_COMPAT
2529 Select this option if you want to run n32 binaries. These are
2530 64-bit binaries using 32-bit quantities for addressing and certain
2531 data that would normally be 64-bit. They are used in special
2538 default y if MIPS32_O32 || MIPS32_N32
2542 menu "Power management options"
2544 config ARCH_HIBERNATION_POSSIBLE
2546 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2548 config ARCH_SUSPEND_POSSIBLE
2550 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
2552 source "kernel/power/Kconfig"
2556 config MIPS_EXTERNAL_TIMER
2559 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
2560 menu "CPU Power Management"
2561 source "drivers/cpufreq/Kconfig"
2565 source "net/Kconfig"
2567 source "drivers/Kconfig"
2569 source "drivers/firmware/Kconfig"
2573 source "arch/mips/Kconfig.debug"
2575 source "security/Kconfig"
2577 source "crypto/Kconfig"
2579 source "lib/Kconfig"
2581 source "arch/mips/kvm/Kconfig"