4 # Horrible source of confusion. Die, die, die ...
7 mainmenu "Linux/MIPS Kernel Configuration"
9 menu "Machine selection"
19 bool "Alchemy processor based machines"
22 bool "Basler eXcite smart camera"
29 select SYS_HAS_CPU_RM9000
30 select SYS_SUPPORTS_32BIT_KERNEL
31 select SYS_SUPPORTS_64BIT_KERNEL
32 select SYS_SUPPORTS_BIG_ENDIAN
33 select SYS_SUPPORTS_KGDB
35 The eXcite is a smart camera platform manufactured by
36 Basler Vision Technologies AG.
38 config BASLER_EXCITE_PROTOTYPE
39 bool "Support for pre-release units"
40 depends on BASLER_EXCITE
43 Pre-series (prototype) units are different from later ones in
44 some ways. Select this option if you have one of these. Please
45 note that a kernel built with this option selected will not be
46 able to run on normal units.
50 select DMA_NONCOHERENT
54 select PCI_GT64XXX_PCI0
55 select SYS_HAS_CPU_NEVADA
56 select SYS_HAS_EARLY_PRINTK
57 select SYS_SUPPORTS_32BIT_KERNEL
58 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
59 select SYS_SUPPORTS_LITTLE_ENDIAN
60 select GENERIC_HARDIRQS_NO__DO_IRQ
62 config MACH_DECSTATION
65 select DMA_NONCOHERENT
68 select SYS_HAS_CPU_R3000
69 select SYS_HAS_CPU_R4X00
70 select SYS_SUPPORTS_32BIT_KERNEL
71 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
72 select SYS_SUPPORTS_LITTLE_ENDIAN
73 select SYS_SUPPORTS_128HZ
74 select SYS_SUPPORTS_256HZ
75 select SYS_SUPPORTS_1024HZ
77 This enables support for DEC's MIPS based workstations. For details
78 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
79 DECstation porting pages on <http://decstation.unix-ag.org/>.
81 If you have one of the following DECstation Models you definitely
82 want to choose R4xx0 for the CPU Type:
89 otherwise choose R3000.
92 bool "Jazz family of machines"
95 select ARCH_MAY_HAVE_PC_FDC
96 select GENERIC_ISA_DMA
100 select SYS_HAS_CPU_R4X00
101 select SYS_SUPPORTS_32BIT_KERNEL
102 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
103 select SYS_SUPPORTS_100HZ
104 select GENERIC_HARDIRQS_NO__DO_IRQ
106 This a family of machines based on the MIPS R4030 chipset which was
107 used by several vendors to build RISC/os and Windows NT workstations.
108 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millenium and
109 Olivetti M700-10 workstations.
112 bool "Lemote Fulong mini-PC"
113 select ARCH_SPARSEMEM_ENABLE
114 select SYS_HAS_CPU_LOONGSON2
115 select DMA_NONCOHERENT
118 select HAVE_STD_PC_SERIAL_PORT
123 select SYS_SUPPORTS_32BIT_KERNEL
124 select SYS_SUPPORTS_64BIT_KERNEL
125 select SYS_SUPPORTS_LITTLE_ENDIAN
126 select SYS_SUPPORTS_HIGHMEM
127 select SYS_HAS_EARLY_PRINTK
128 select GENERIC_HARDIRQS_NO__DO_IRQ
131 Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
135 bool "MIPS Atlas board"
137 select DMA_NONCOHERENT
138 select SYS_HAS_EARLY_PRINTK
141 select MIPS_BOARDS_GEN
143 select PCI_GT64XXX_PCI0
145 select RM7000_CPU_SCACHE
147 select SYS_HAS_CPU_MIPS32_R1
148 select SYS_HAS_CPU_MIPS32_R2
149 select SYS_HAS_CPU_MIPS64_R1
150 select SYS_HAS_CPU_NEVADA
151 select SYS_HAS_CPU_RM7000
152 select SYS_SUPPORTS_32BIT_KERNEL
153 select SYS_SUPPORTS_64BIT_KERNEL
154 select SYS_SUPPORTS_BIG_ENDIAN
155 select SYS_SUPPORTS_LITTLE_ENDIAN
156 select SYS_SUPPORTS_MULTITHREADING if EXPERIMENTAL
157 select SYS_SUPPORTS_SMARTMIPS
158 select GENERIC_HARDIRQS_NO__DO_IRQ
160 This enables support for the MIPS Technologies Atlas evaluation
164 bool "MIPS Malta board"
165 select ARCH_MAY_HAVE_PC_FDC
167 select DMA_NONCOHERENT
168 select GENERIC_ISA_DMA
172 select MIPS_BOARDS_GEN
174 select MIPS_CPU_SCACHE
175 select PCI_GT64XXX_PCI0
178 select SYS_HAS_CPU_MIPS32_R1
179 select SYS_HAS_CPU_MIPS32_R2
180 select SYS_HAS_CPU_MIPS64_R1
181 select SYS_HAS_CPU_NEVADA
182 select SYS_HAS_CPU_RM7000
183 select SYS_HAS_EARLY_PRINTK
184 select SYS_SUPPORTS_32BIT_KERNEL
185 select SYS_SUPPORTS_64BIT_KERNEL
186 select SYS_SUPPORTS_BIG_ENDIAN
187 select SYS_SUPPORTS_LITTLE_ENDIAN
188 select SYS_SUPPORTS_MULTITHREADING
189 select SYS_SUPPORTS_SMARTMIPS
191 This enables support for the MIPS Technologies Malta evaluation
195 bool "MIPS SEAD board (EXPERIMENTAL)"
196 depends on EXPERIMENTAL
198 select DMA_NONCOHERENT
199 select SYS_HAS_EARLY_PRINTK
200 select MIPS_BOARDS_GEN
201 select SYS_HAS_CPU_MIPS32_R1
202 select SYS_HAS_CPU_MIPS32_R2
203 select SYS_HAS_CPU_MIPS64_R1
204 select SYS_SUPPORTS_32BIT_KERNEL
205 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
206 select SYS_SUPPORTS_BIG_ENDIAN
207 select SYS_SUPPORTS_LITTLE_ENDIAN
208 select SYS_SUPPORTS_SMARTMIPS
210 This enables support for the MIPS Technologies SEAD evaluation
214 bool 'MIPS simulator (MIPSsim)'
215 select DMA_NONCOHERENT
216 select SYS_HAS_EARLY_PRINTK
219 select SYS_HAS_CPU_MIPS32_R1
220 select SYS_HAS_CPU_MIPS32_R2
221 select SYS_HAS_EARLY_PRINTK
222 select SYS_SUPPORTS_32BIT_KERNEL
223 select SYS_SUPPORTS_BIG_ENDIAN
224 select SYS_SUPPORTS_MULTITHREADING
225 select SYS_SUPPORTS_LITTLE_ENDIAN
227 This option enables support for MIPS Technologies MIPSsim software
231 bool "NEC EMMA2RH Mark-eins"
232 select DMA_NONCOHERENT
236 select SYS_SUPPORTS_32BIT_KERNEL
237 select SYS_SUPPORTS_BIG_ENDIAN
238 select SYS_SUPPORTS_LITTLE_ENDIAN
239 select SYS_HAS_CPU_R5000
241 This enables support for the R5432-based NEC Mark-eins
242 boards with R5500 CPU.
245 bool "NEC VR4100 series based machines"
246 select SYS_HAS_CPU_VR41XX
247 select GENERIC_HARDIRQS_NO__DO_IRQ
250 bool "Philips PNX8550 based JBS board"
252 select SYS_SUPPORTS_LITTLE_ENDIAN
254 config PNX8550_STB810
255 bool "Philips PNX8550 based STB810 board"
257 select SYS_SUPPORTS_LITTLE_ENDIAN
260 bool "PMC-Sierra MSP chipsets"
261 depends on EXPERIMENTAL
262 select DMA_NONCOHERENT
264 select NO_EXCEPT_FILL
266 select SYS_HAS_CPU_MIPS32_R1
267 select SYS_HAS_CPU_MIPS32_R2
268 select SYS_SUPPORTS_32BIT_KERNEL
269 select SYS_SUPPORTS_BIG_ENDIAN
270 select SYS_SUPPORTS_KGDB
273 select SERIAL_8250_CONSOLE
275 This adds support for the PMC-Sierra family of Multi-Service
276 Processor System-On-A-Chips. These parts include a number
277 of integrated peripherals, interfaces and DSPs in addition to
278 a variety of MIPS cores.
281 bool "PMC-Sierra Yosemite eval board"
288 select SYS_HAS_CPU_RM9000
289 select SYS_HAS_EARLY_PRINTK
290 select SYS_SUPPORTS_32BIT_KERNEL
291 select SYS_SUPPORTS_64BIT_KERNEL
292 select SYS_SUPPORTS_BIG_ENDIAN
293 select SYS_SUPPORTS_HIGHMEM
294 select SYS_SUPPORTS_KGDB
295 select SYS_SUPPORTS_SMP
297 Yosemite is an evaluation board for the RM9000x2 processor
298 manufactured by PMC-Sierra.
303 select GENERIC_ISA_DMA
304 select HAVE_STD_PC_SERIAL_PORT
309 select SYS_HAS_CPU_MIPS32_R1
310 select SYS_SUPPORTS_32BIT_KERNEL
311 select SYS_SUPPORTS_BIG_ENDIAN
312 select SYS_SUPPORTS_LITTLE_ENDIAN
313 select ARCH_SPARSEMEM_ENABLE
314 select GENERIC_HARDIRQS_NO__DO_IRQ
315 select NR_CPUS_DEFAULT_1
316 select SYS_SUPPORTS_SMP
318 Qemu is a software emulator which among other architectures also
319 can simulate a MIPS32 4Kc system. This patch adds support for the
320 system architecture that currently is being simulated by Qemu. It
321 will eventually be removed again when Qemu has the capability to
322 simulate actual MIPS hardware platforms. More information on Qemu
323 can be found at http://www.linux-mips.org/wiki/Qemu.
326 bool "SGI IP22 (Indy/Indigo2)"
330 select DMA_NONCOHERENT
332 select IP22_CPU_SCACHE
334 select GENERIC_ISA_DMA_SUPPORT_BROKEN
336 select SYS_HAS_CPU_R4X00
337 select SYS_HAS_CPU_R5000
338 select SYS_HAS_EARLY_PRINTK
339 select SYS_SUPPORTS_32BIT_KERNEL
340 select SYS_SUPPORTS_64BIT_KERNEL
341 select SYS_SUPPORTS_BIG_ENDIAN
343 This are the SGI Indy, Challenge S and Indigo2, as well as certain
344 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
345 that runs on these, say Y here.
348 bool "SGI IP27 (Origin200/2000)"
353 select SYS_HAS_EARLY_PRINTK
355 select NR_CPUS_DEFAULT_64
357 select SYS_HAS_CPU_R10000
358 select SYS_SUPPORTS_64BIT_KERNEL
359 select SYS_SUPPORTS_BIG_ENDIAN
360 select SYS_SUPPORTS_KGDB
361 select SYS_SUPPORTS_NUMA
362 select SYS_SUPPORTS_SMP
363 select GENERIC_HARDIRQS_NO__DO_IRQ
365 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
366 workstations. To compile a Linux kernel that runs on these, say Y
374 select DMA_NONCOHERENT
376 select R5000_CPU_SCACHE
377 select RM7000_CPU_SCACHE
378 select SYS_HAS_CPU_R5000
379 select SYS_HAS_CPU_R10000 if BROKEN
380 select SYS_HAS_CPU_RM7000
381 select SYS_HAS_CPU_NEVADA
382 select SYS_SUPPORTS_64BIT_KERNEL
383 select SYS_SUPPORTS_BIG_ENDIAN
385 If you want this kernel to run on SGI O2 workstation, say Y here.
388 bool "Sibyte BCM91120C-CRhine"
389 depends on EXPERIMENTAL
392 select SIBYTE_BCM1120
394 select SYS_HAS_CPU_SB1
395 select SYS_SUPPORTS_BIG_ENDIAN
396 select SYS_SUPPORTS_LITTLE_ENDIAN
399 bool "Sibyte BCM91120x-Carmel"
400 depends on EXPERIMENTAL
403 select SIBYTE_BCM1120
405 select SYS_HAS_CPU_SB1
406 select SYS_SUPPORTS_BIG_ENDIAN
407 select SYS_SUPPORTS_LITTLE_ENDIAN
410 bool "Sibyte BCM91125C-CRhone"
411 depends on EXPERIMENTAL
414 select SIBYTE_BCM1125
416 select SYS_HAS_CPU_SB1
417 select SYS_SUPPORTS_BIG_ENDIAN
418 select SYS_SUPPORTS_HIGHMEM
419 select SYS_SUPPORTS_LITTLE_ENDIAN
422 bool "Sibyte BCM91125E-Rhone"
423 depends on EXPERIMENTAL
426 select SIBYTE_BCM1125H
428 select SYS_HAS_CPU_SB1
429 select SYS_SUPPORTS_BIG_ENDIAN
430 select SYS_SUPPORTS_LITTLE_ENDIAN
433 bool "Sibyte BCM91250A-SWARM"
436 select NR_CPUS_DEFAULT_2
439 select SYS_HAS_CPU_SB1
440 select SYS_SUPPORTS_BIG_ENDIAN
441 select SYS_SUPPORTS_HIGHMEM
442 select SYS_SUPPORTS_KGDB
443 select SYS_SUPPORTS_LITTLE_ENDIAN
445 config SIBYTE_LITTLESUR
446 bool "Sibyte BCM91250C2-LittleSur"
447 depends on EXPERIMENTAL
450 select NR_CPUS_DEFAULT_2
453 select SYS_HAS_CPU_SB1
454 select SYS_SUPPORTS_BIG_ENDIAN
455 select SYS_SUPPORTS_HIGHMEM
456 select SYS_SUPPORTS_LITTLE_ENDIAN
458 config SIBYTE_SENTOSA
459 bool "Sibyte BCM91250E-Sentosa"
460 depends on EXPERIMENTAL
463 select NR_CPUS_DEFAULT_2
466 select SYS_HAS_CPU_SB1
467 select SYS_SUPPORTS_BIG_ENDIAN
468 select SYS_SUPPORTS_LITTLE_ENDIAN
470 config SIBYTE_PTSWARM
471 bool "Sibyte BCM91250PT-PTSWARM"
472 depends on EXPERIMENTAL
475 select NR_CPUS_DEFAULT_2
478 select SYS_HAS_CPU_SB1
479 select SYS_SUPPORTS_BIG_ENDIAN
480 select SYS_SUPPORTS_HIGHMEM
481 select SYS_SUPPORTS_LITTLE_ENDIAN
484 bool "Sibyte BCM91480B-BigSur"
487 select NR_CPUS_DEFAULT_4
489 select SIBYTE_BCM1x80
491 select SYS_HAS_CPU_SB1
492 select SYS_SUPPORTS_BIG_ENDIAN
493 select SYS_SUPPORTS_LITTLE_ENDIAN
496 bool "SNI RM200/300/400"
497 select ARC if CPU_LITTLE_ENDIAN
498 select ARC32 if CPU_LITTLE_ENDIAN
499 select ARCH_MAY_HAVE_PC_FDC
501 select DMA_NONCOHERENT
502 select GENERIC_ISA_DMA
509 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
510 select SYS_HAS_CPU_R4X00
511 select SYS_HAS_CPU_R5000
512 select SYS_HAS_CPU_R10000
513 select R5000_CPU_SCACHE
514 select SYS_HAS_EARLY_PRINTK
515 select SYS_SUPPORTS_32BIT_KERNEL
516 select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
517 select SYS_SUPPORTS_BIG_ENDIAN
518 select SYS_SUPPORTS_HIGHMEM
519 select SYS_SUPPORTS_LITTLE_ENDIAN
521 The SNI RM200/300/400 are MIPS-based machines manufactured by
522 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
523 Technology and now in turn merged with Fujitsu. Say Y here to
524 support this machine type.
526 config TOSHIBA_JMR3927
527 bool "Toshiba JMR-TX3927 board"
528 select DMA_NONCOHERENT
532 select SYS_HAS_CPU_TX39XX
533 select SYS_SUPPORTS_32BIT_KERNEL
534 select SYS_SUPPORTS_LITTLE_ENDIAN
535 select SYS_SUPPORTS_BIG_ENDIAN
536 select GENERIC_HARDIRQS_NO__DO_IRQ
538 config TOSHIBA_RBTX4927
539 bool "Toshiba RBTX49[23]7 board"
540 select DMA_NONCOHERENT
541 select HAS_TXX9_SERIAL
545 select SYS_HAS_CPU_TX49XX
546 select SYS_SUPPORTS_32BIT_KERNEL
547 select SYS_SUPPORTS_64BIT_KERNEL
548 select SYS_SUPPORTS_LITTLE_ENDIAN
549 select SYS_SUPPORTS_BIG_ENDIAN
550 select SYS_SUPPORTS_KGDB
551 select GENERIC_HARDIRQS_NO__DO_IRQ
553 This Toshiba board is based on the TX4927 processor. Say Y here to
554 support this machine type
556 config TOSHIBA_RBTX4938
557 bool "Toshiba RBTX4938 board"
558 select HAVE_STD_PC_SERIAL_PORT
559 select DMA_NONCOHERENT
560 select GENERIC_ISA_DMA
561 select HAS_TXX9_SERIAL
565 select SYS_HAS_CPU_TX49XX
566 select SYS_SUPPORTS_32BIT_KERNEL
567 select SYS_SUPPORTS_LITTLE_ENDIAN
568 select SYS_SUPPORTS_BIG_ENDIAN
569 select SYS_SUPPORTS_KGDB
570 select GENERIC_HARDIRQS_NO__DO_IRQ
573 This Toshiba board is based on the TX4938 processor. Say Y here to
574 support this machine type
577 bool "Wind River PPMC board"
580 select DMA_NONCOHERENT
582 select PCI_GT64XXX_PCI0
584 select SYS_HAS_CPU_MIPS32_R1
585 select SYS_HAS_CPU_MIPS32_R2
586 select SYS_HAS_CPU_MIPS64_R1
587 select SYS_HAS_CPU_NEVADA
588 select SYS_HAS_CPU_RM7000
589 select SYS_SUPPORTS_32BIT_KERNEL
590 select SYS_SUPPORTS_64BIT_KERNEL
591 select SYS_SUPPORTS_BIG_ENDIAN
592 select SYS_SUPPORTS_LITTLE_ENDIAN
594 This enables support for the Wind River MIPS32 4KC PPMC evaluation
595 board, which is based on GT64120 bridge chip.
599 source "arch/mips/au1000/Kconfig"
600 source "arch/mips/jazz/Kconfig"
601 source "arch/mips/pmc-sierra/Kconfig"
602 source "arch/mips/sgi-ip27/Kconfig"
603 source "arch/mips/sibyte/Kconfig"
604 source "arch/mips/tx4927/Kconfig"
605 source "arch/mips/tx4938/Kconfig"
606 source "arch/mips/vr41xx/Kconfig"
607 source "arch/mips/philips/pnx8550/common/Kconfig"
611 config RWSEM_GENERIC_SPINLOCK
615 config RWSEM_XCHGADD_ALGORITHM
618 config ARCH_HAS_ILOG2_U32
622 config ARCH_HAS_ILOG2_U64
626 config GENERIC_FIND_NEXT_BIT
630 config GENERIC_HWEIGHT
634 config GENERIC_CALIBRATE_DELAY
642 config SCHED_NO_NO_OMIT_FRAME_POINTER
646 config GENERIC_HARDIRQS_NO__DO_IRQ
651 # Select some configuration options automatically based on user selections.
656 config ARCH_MAY_HAVE_PC_FDC
670 select DMA_NEED_PCI_MAP_STATE
672 config DMA_NONCOHERENT
674 select DMA_NEED_PCI_MAP_STATE
676 config DMA_NEED_PCI_MAP_STATE
680 bool "Early printk" if EMBEDDED && DEBUG_KERNEL
681 depends on SYS_HAS_EARLY_PRINTK
684 This option enables special console drivers which allow the kernel
685 to print messages very early in the bootup process.
687 This is useful for kernel debugging when your machine crashes very
688 early before the console code is initialized. For normal operation,
689 it is not recommended because it looks ugly on some machines and
690 doesn't cooperate with an X server. You should normally say N here,
691 unless you want to debug such a crash.
693 config SYS_HAS_EARLY_PRINTK
696 config GENERIC_ISA_DMA
709 config MIPS_DISABLE_OBSOLETE_IDE
715 config GENERIC_ISA_DMA_SUPPORT_BROKEN
723 # Endianess selection. Sufficiently obscure so many users don't know what to
724 # answer,so we try hard to limit the available choices. Also the use of a
725 # choice statement should be more obvious to the user.
728 prompt "Endianess selection"
730 Some MIPS machines can be configured for either little or big endian
731 byte order. These modes require different kernels and a different
732 Linux distribution. In general there is one preferred byteorder for a
733 particular system but some systems are just as commonly used in the
734 one or the other endianness.
736 config CPU_BIG_ENDIAN
738 depends on SYS_SUPPORTS_BIG_ENDIAN
740 config CPU_LITTLE_ENDIAN
742 depends on SYS_SUPPORTS_LITTLE_ENDIAN
747 config SYS_SUPPORTS_APM_EMULATION
750 config SYS_SUPPORTS_BIG_ENDIAN
753 config SYS_SUPPORTS_LITTLE_ENDIAN
771 config MIPS_BOARDS_GEN
774 config PCI_GT64XXX_PCI0
777 config NO_EXCEPT_FILL
782 select HAS_TXX9_SERIAL
794 select DMA_NONCOHERENT
796 select SYS_HAS_CPU_MIPS32_R1
797 select SYS_HAS_EARLY_PRINTK
798 select SYS_SUPPORTS_32BIT_KERNEL
799 select GENERIC_HARDIRQS_NO__DO_IRQ
800 select SYS_SUPPORTS_KGDB
815 # Unfortunately not all GT64120 systems run the chip at the same clock.
816 # As the user for the clock rate and try to minimize the available options.
819 prompt "Galileo Chip Clock"
820 depends on MOMENCO_OCELOT
821 default SYSCLK_100 if MOMENCO_OCELOT
824 bool "100" if MOMENCO_OCELOT
834 config MIPS_L1_CACHE_SHIFT
836 default "4" if MACH_DECSTATION
837 default "7" if SGI_IP27 || SNI_RM
838 default "4" if PMC_MSP4200_EVAL
841 config HAVE_STD_PC_SERIAL_PORT
845 bool "ARC console support"
846 depends on SGI_IP22 || (SNI_RM && CPU_LITTLE_ENDIAN)
850 depends on MACH_JAZZ || SNI_RM || SGI_IP32
855 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP32
872 depends on SYS_HAS_CPU_LOONGSON2
873 select CPU_SUPPORTS_32BIT_KERNEL
874 select CPU_SUPPORTS_64BIT_KERNEL
875 select CPU_SUPPORTS_HIGHMEM
877 The Loongson 2E processor implements the MIPS III instruction set
878 with many extensions.
881 bool "MIPS32 Release 1"
882 depends on SYS_HAS_CPU_MIPS32_R1
884 select CPU_HAS_PREFETCH
885 select CPU_SUPPORTS_32BIT_KERNEL
886 select CPU_SUPPORTS_HIGHMEM
888 Choose this option to build a kernel for release 1 or later of the
889 MIPS32 architecture. Most modern embedded systems with a 32-bit
890 MIPS processor are based on a MIPS32 processor. If you know the
891 specific type of processor in your system, choose those that one
892 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
893 Release 2 of the MIPS32 architecture is available since several
894 years so chances are you even have a MIPS32 Release 2 processor
895 in which case you should choose CPU_MIPS32_R2 instead for better
899 bool "MIPS32 Release 2"
900 depends on SYS_HAS_CPU_MIPS32_R2
902 select CPU_HAS_PREFETCH
903 select CPU_SUPPORTS_32BIT_KERNEL
904 select CPU_SUPPORTS_HIGHMEM
906 Choose this option to build a kernel for release 2 or later of the
907 MIPS32 architecture. Most modern embedded systems with a 32-bit
908 MIPS processor are based on a MIPS32 processor. If you know the
909 specific type of processor in your system, choose those that one
910 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
913 bool "MIPS64 Release 1"
914 depends on SYS_HAS_CPU_MIPS64_R1
916 select CPU_HAS_PREFETCH
917 select CPU_SUPPORTS_32BIT_KERNEL
918 select CPU_SUPPORTS_64BIT_KERNEL
919 select CPU_SUPPORTS_HIGHMEM
921 Choose this option to build a kernel for release 1 or later of the
922 MIPS64 architecture. Many modern embedded systems with a 64-bit
923 MIPS processor are based on a MIPS64 processor. If you know the
924 specific type of processor in your system, choose those that one
925 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
926 Release 2 of the MIPS64 architecture is available since several
927 years so chances are you even have a MIPS64 Release 2 processor
928 in which case you should choose CPU_MIPS64_R2 instead for better
932 bool "MIPS64 Release 2"
933 depends on SYS_HAS_CPU_MIPS64_R2
935 select CPU_HAS_PREFETCH
936 select CPU_SUPPORTS_32BIT_KERNEL
937 select CPU_SUPPORTS_64BIT_KERNEL
938 select CPU_SUPPORTS_HIGHMEM
940 Choose this option to build a kernel for release 2 or later of the
941 MIPS64 architecture. Many modern embedded systems with a 64-bit
942 MIPS processor are based on a MIPS64 processor. If you know the
943 specific type of processor in your system, choose those that one
944 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
948 depends on SYS_HAS_CPU_R3000
950 select CPU_SUPPORTS_32BIT_KERNEL
951 select CPU_SUPPORTS_HIGHMEM
953 Please make sure to pick the right CPU type. Linux/MIPS is not
954 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
955 *not* work on R4000 machines and vice versa. However, since most
956 of the supported machines have an R4000 (or similar) CPU, R4x00
957 might be a safe bet. If the resulting kernel does not work,
958 try to recompile with R3000.
962 depends on SYS_HAS_CPU_TX39XX
963 select CPU_SUPPORTS_32BIT_KERNEL
967 depends on SYS_HAS_CPU_VR41XX
968 select CPU_SUPPORTS_32BIT_KERNEL
969 select CPU_SUPPORTS_64BIT_KERNEL
971 The options selects support for the NEC VR4100 series of processors.
972 Only choose this option if you have one of these processors as a
973 kernel built with this option will not run on any other type of
974 processor or vice versa.
978 depends on SYS_HAS_CPU_R4300
980 select CPU_SUPPORTS_32BIT_KERNEL
981 select CPU_SUPPORTS_64BIT_KERNEL
983 MIPS Technologies R4300-series processors.
987 depends on SYS_HAS_CPU_R4X00
989 select CPU_SUPPORTS_32BIT_KERNEL
990 select CPU_SUPPORTS_64BIT_KERNEL
992 MIPS Technologies R4000-series processors other than 4300, including
993 the R4000, R4400, R4600, and 4700.
997 depends on SYS_HAS_CPU_TX49XX
999 select CPU_HAS_PREFETCH
1000 select CPU_SUPPORTS_32BIT_KERNEL
1001 select CPU_SUPPORTS_64BIT_KERNEL
1005 depends on SYS_HAS_CPU_R5000
1007 select CPU_SUPPORTS_32BIT_KERNEL
1008 select CPU_SUPPORTS_64BIT_KERNEL
1010 MIPS Technologies R5000-series processors other than the Nevada.
1014 depends on SYS_HAS_CPU_R5432
1016 select CPU_SUPPORTS_32BIT_KERNEL
1017 select CPU_SUPPORTS_64BIT_KERNEL
1021 depends on EXPERIMENTAL
1023 depends on SYS_HAS_CPU_R6000
1024 select CPU_SUPPORTS_32BIT_KERNEL
1026 MIPS Technologies R6000 and R6000A series processors. Note these
1027 processors are extremely rare and the support for them is incomplete.
1031 depends on SYS_HAS_CPU_NEVADA
1033 select CPU_SUPPORTS_32BIT_KERNEL
1034 select CPU_SUPPORTS_64BIT_KERNEL
1036 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1040 depends on EXPERIMENTAL
1041 depends on SYS_HAS_CPU_R8000
1043 select CPU_HAS_PREFETCH
1044 select CPU_SUPPORTS_64BIT_KERNEL
1046 MIPS Technologies R8000 processors. Note these processors are
1047 uncommon and the support for them is incomplete.
1051 depends on SYS_HAS_CPU_R10000
1053 select CPU_HAS_PREFETCH
1054 select CPU_SUPPORTS_32BIT_KERNEL
1055 select CPU_SUPPORTS_64BIT_KERNEL
1056 select CPU_SUPPORTS_HIGHMEM
1058 MIPS Technologies R10000-series processors.
1062 depends on SYS_HAS_CPU_RM7000
1064 select CPU_HAS_PREFETCH
1065 select CPU_SUPPORTS_32BIT_KERNEL
1066 select CPU_SUPPORTS_64BIT_KERNEL
1067 select CPU_SUPPORTS_HIGHMEM
1071 depends on SYS_HAS_CPU_RM9000
1073 select CPU_HAS_PREFETCH
1074 select CPU_SUPPORTS_32BIT_KERNEL
1075 select CPU_SUPPORTS_64BIT_KERNEL
1076 select CPU_SUPPORTS_HIGHMEM
1077 select WEAK_ORDERING
1081 depends on SYS_HAS_CPU_SB1
1083 select CPU_SUPPORTS_32BIT_KERNEL
1084 select CPU_SUPPORTS_64BIT_KERNEL
1085 select CPU_SUPPORTS_HIGHMEM
1086 select WEAK_ORDERING
1090 config SYS_HAS_CPU_LOONGSON2
1093 config SYS_HAS_CPU_MIPS32_R1
1096 config SYS_HAS_CPU_MIPS32_R2
1099 config SYS_HAS_CPU_MIPS64_R1
1102 config SYS_HAS_CPU_MIPS64_R2
1105 config SYS_HAS_CPU_R3000
1108 config SYS_HAS_CPU_TX39XX
1111 config SYS_HAS_CPU_VR41XX
1114 config SYS_HAS_CPU_R4300
1117 config SYS_HAS_CPU_R4X00
1120 config SYS_HAS_CPU_TX49XX
1123 config SYS_HAS_CPU_R5000
1126 config SYS_HAS_CPU_R5432
1129 config SYS_HAS_CPU_R6000
1132 config SYS_HAS_CPU_NEVADA
1135 config SYS_HAS_CPU_R8000
1138 config SYS_HAS_CPU_R10000
1141 config SYS_HAS_CPU_RM7000
1144 config SYS_HAS_CPU_RM9000
1147 config SYS_HAS_CPU_SB1
1151 # CPU may reorder R->R, R->W, W->R, W->W
1152 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1154 config WEAK_ORDERING
1158 # CPU may reorder reads and writes beyond LL/SC
1159 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1161 config WEAK_REORDERING_BEYOND_LLSC
1166 # These two indicate any level of the MIPS32 and MIPS64 architecture
1170 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1174 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1177 # These two indicate the revision of the architecture, either Release 1 or Release 2
1181 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1185 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1187 config SYS_SUPPORTS_32BIT_KERNEL
1189 config SYS_SUPPORTS_64BIT_KERNEL
1191 config CPU_SUPPORTS_32BIT_KERNEL
1193 config CPU_SUPPORTS_64BIT_KERNEL
1200 prompt "Kernel code model"
1202 You should only select this option if you have a workload that
1203 actually benefits from 64-bit processing or if your machine has
1204 large memory. You will only be presented a single option in this
1205 menu if your system does not support both 32-bit and 64-bit kernels.
1208 bool "32-bit kernel"
1209 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1212 Select this option if you want to build a 32-bit kernel.
1214 bool "64-bit kernel"
1215 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1217 Select this option if you want to build a 64-bit kernel.
1222 prompt "Kernel page size"
1223 default PAGE_SIZE_4KB
1225 config PAGE_SIZE_4KB
1228 This option select the standard 4kB Linux page size. On some
1229 R3000-family processors this is the only available page size. Using
1230 4kB page size will minimize memory consumption and is therefore
1231 recommended for low memory systems.
1233 config PAGE_SIZE_8KB
1235 depends on EXPERIMENTAL && CPU_R8000
1237 Using 8kB page size will result in higher performance kernel at
1238 the price of higher memory consumption. This option is available
1239 only on the R8000 processor. Not that at the time of this writing
1240 this option is still high experimental; there are also issues with
1241 compatibility of user applications.
1243 config PAGE_SIZE_16KB
1245 depends on !CPU_R3000 && !CPU_TX39XX
1247 Using 16kB page size will result in higher performance kernel at
1248 the price of higher memory consumption. This option is available on
1249 all non-R3000 family processors. Note that you will need a suitable
1250 Linux distribution to support this.
1252 config PAGE_SIZE_64KB
1254 depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1256 Using 64kB page size will result in higher performance kernel at
1257 the price of higher memory consumption. This option is available on
1258 all non-R3000 family processor. Not that at the time of this
1259 writing this option is still high experimental.
1266 config IP22_CPU_SCACHE
1271 # Support for a MIPS32 / MIPS64 style S-caches
1273 config MIPS_CPU_SCACHE
1277 config R5000_CPU_SCACHE
1281 config RM7000_CPU_SCACHE
1285 config SIBYTE_DMA_PAGEOPS
1286 bool "Use DMA to clear/copy pages"
1289 Instead of using the CPU to zero and copy pages, use a Data Mover
1290 channel. These DMA channels are otherwise unused by the standard
1291 SiByte Linux port. Seems to give a small performance benefit.
1293 config CPU_HAS_PREFETCH
1297 prompt "MIPS MT options"
1299 config MIPS_MT_DISABLED
1300 bool "Disable multithreading support."
1302 Use this option if your workload can't take advantage of
1303 MIPS hardware multithreading support. On systems that don't have
1304 the option of an MT-enabled processor this option will be the only
1305 option in this menu.
1308 bool "Use 1 TC on each available VPE for SMP"
1309 depends on SYS_SUPPORTS_MULTITHREADING
1310 select CPU_MIPSR2_IRQ_VI
1311 select CPU_MIPSR2_IRQ_EI
1312 select CPU_MIPSR2_SRS
1314 select NR_CPUS_DEFAULT_2
1316 select SYS_SUPPORTS_SMP
1318 This is a kernel model which is also known a VSMP or lately
1319 has been marketesed into SMVP.
1322 bool "SMTC: Use all TCs on all VPEs for SMP"
1323 depends on CPU_MIPS32_R2
1324 #depends on CPU_MIPS64_R2 # once there is hardware ...
1325 depends on SYS_SUPPORTS_MULTITHREADING
1326 select CPU_MIPSR2_IRQ_VI
1327 select CPU_MIPSR2_IRQ_EI
1328 select CPU_MIPSR2_SRS
1330 select NR_CPUS_DEFAULT_8
1332 select SYS_SUPPORTS_SMP
1334 This is a kernel model which is known a SMTC or lately has been
1335 marketesed into SMVP.
1342 config SYS_SUPPORTS_MULTITHREADING
1345 config MIPS_MT_FPAFF
1346 bool "Dynamic FPU affinity for FP-intensive threads"
1348 depends on MIPS_MT_SMP || MIPS_MT_SMTC
1350 config MIPS_VPE_LOADER
1351 bool "VPE loader support."
1352 depends on SYS_SUPPORTS_MULTITHREADING
1353 select CPU_MIPSR2_IRQ_VI
1354 select CPU_MIPSR2_IRQ_EI
1355 select CPU_MIPSR2_SRS
1358 Includes a loader for loading an elf relocatable object
1359 onto another VPE and running it.
1361 config MIPS_MT_SMTC_INSTANT_REPLAY
1362 bool "Low-latency Dispatch of Deferred SMTC IPIs"
1363 depends on MIPS_MT_SMTC && !PREEMPT
1366 SMTC pseudo-interrupts between TCs are deferred and queued
1367 if the target TC is interrupt-inhibited (IXMT). In the first
1368 SMTC prototypes, these queued IPIs were serviced on return
1369 to user mode, or on entry into the kernel idle loop. The
1370 INSTANT_REPLAY option dispatches them as part of local_irq_restore()
1371 processing, which adds runtime overhead (hence the option to turn
1372 it off), but ensures that IPIs are handled promptly even under
1373 heavy I/O interrupt load.
1375 config MIPS_MT_SMTC_IM_BACKSTOP
1376 bool "Use per-TC register bits as backstop for inhibited IM bits"
1377 depends on MIPS_MT_SMTC
1380 To support multiple TC microthreads acting as "CPUs" within
1381 a VPE, VPE-wide interrupt mask bits must be specially manipulated
1382 during interrupt handling. To support legacy drivers and interrupt
1383 controller management code, SMTC has a "backstop" to track and
1384 if necessary restore the interrupt mask. This has some performance
1385 impact on interrupt service overhead. Disable it only if you know
1388 config MIPS_VPE_LOADER_TOM
1389 bool "Load VPE program into memory hidden from linux"
1390 depends on MIPS_VPE_LOADER
1393 The loader can use memory that is present but has been hidden from
1394 Linux using the kernel command line option "mem=xxMB". It's up to
1395 you to ensure the amount you put in the option and the space your
1396 program requires is less or equal to the amount physically present.
1398 # this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1399 config MIPS_VPE_APSP_API
1400 bool "Enable support for AP/SP API (RTLX)"
1401 depends on MIPS_VPE_LOADER
1404 config MIPS_APSP_KSPD
1406 depends on MIPS_VPE_APSP_API
1409 KSPD is a kernel daemon that accepts syscall requests from the SP
1410 side, actions them and returns the results. It also handles the
1411 "exit" syscall notifying other kernel modules the SP program is
1412 exiting. You probably want to say yes here.
1414 config SB1_PASS_1_WORKAROUNDS
1416 depends on CPU_SB1_PASS_1
1419 config SB1_PASS_2_WORKAROUNDS
1421 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1424 config SB1_PASS_2_1_WORKAROUNDS
1426 depends on CPU_SB1 && CPU_SB1_PASS_2
1429 config 64BIT_PHYS_ADDR
1430 bool "Support for 64-bit physical address space"
1431 depends on (CPU_R4X00 || CPU_R5000 || CPU_RM7000 || CPU_RM9000 || CPU_R10000 || CPU_SB1 || CPU_MIPS32 || CPU_MIPS64) && 32BIT
1436 config CPU_HAS_SMARTMIPS
1437 depends on SYS_SUPPORTS_SMARTMIPS
1438 bool "Support for the SmartMIPS ASE"
1440 SmartMIPS is a extension of the MIPS32 architecture aimed at
1441 increased security at both hardware and software level for
1442 smartcards. Enabling this option will allow proper use of the
1443 SmartMIPS instructions by Linux applications. However a kernel with
1444 this option will not work on a MIPS core without SmartMIPS core. If
1445 you don't know you probably don't have SmartMIPS and should say N
1451 config 64BIT_CONTEXT
1452 bool "Save 64bit integer registers"
1453 depends on 32BIT && CPU_LOONGSON2
1455 Loongson2 CPU is 64bit , when used in 32BIT mode, its integer
1456 registers can still be accessed as 64bit, mainly for multimedia
1457 instructions. We must have all 64bit save/restored to make sure
1458 those instructions to get correct result.
1461 # Vectored interrupt mode is an R2 feature
1463 config CPU_MIPSR2_IRQ_VI
1467 # Extended interrupt mode is an R2 feature
1469 config CPU_MIPSR2_IRQ_EI
1473 # Shadow registers are an R2 feature
1475 config CPU_MIPSR2_SRS
1480 depends on !CPU_R3000
1484 # Use the generic interrupt handling code in kernel/irq/:
1486 config GENERIC_HARDIRQS
1490 config GENERIC_IRQ_PROBE
1498 # - Highmem only makes sense for the 32-bit kernel.
1499 # - The current highmem code will only work properly on physically indexed
1500 # caches such as R3000, SB1, R7000 or those that look like they're virtually
1501 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
1502 # moment we protect the user and offer the highmem option only on machines
1503 # where it's known to be safe. This will not offer highmem on a few systems
1504 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1505 # indexed CPUs but we're playing safe.
1506 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1507 # know they might have memory configurations that could make use of highmem
1511 bool "High Memory Support"
1512 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1514 config CPU_SUPPORTS_HIGHMEM
1517 config SYS_SUPPORTS_HIGHMEM
1520 config SYS_SUPPORTS_SMARTMIPS
1523 config ARCH_FLATMEM_ENABLE
1527 config ARCH_DISCONTIGMEM_ENABLE
1529 default y if SGI_IP27
1531 Say Y to support efficient handling of discontiguous physical memory,
1532 for architectures which are either NUMA (Non-Uniform Memory Access)
1533 or have huge holes in the physical address space for other reasons.
1534 See <file:Documentation/vm/numa> for more.
1536 config ARCH_SPARSEMEM_ENABLE
1538 select SPARSEMEM_STATIC
1542 depends on SYS_SUPPORTS_NUMA
1544 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1545 Access). This option improves performance on systems with more
1546 than two nodes; on two node systems it is generally better to
1547 leave it disabled; on single node systems disable this option
1550 config SYS_SUPPORTS_NUMA
1556 depends on NEED_MULTIPLE_NODES
1561 bool "Multi-Processing support"
1562 depends on SYS_SUPPORTS_SMP
1565 This enables support for systems with more than one CPU. If you have
1566 a system with only one CPU, like most personal computers, say N. If
1567 you have a system with more than one CPU, say Y.
1569 If you say N here, the kernel will run on single and multiprocessor
1570 machines, but will use only one CPU of a multiprocessor machine. If
1571 you say Y here, the kernel will run on many, but not all,
1572 singleprocessor machines. On a singleprocessor machine, the kernel
1573 will run faster if you say N here.
1575 People using multiprocessor machines who say Y here should also say
1576 Y to "Enhanced Real Time Clock Support", below.
1578 See also the <file:Documentation/smp.txt> and the SMP-HOWTO
1579 available at <http://www.tldp.org/docs.html#howto>.
1581 If you don't know what to do here, say N.
1583 config SYS_SUPPORTS_SMP
1586 config NR_CPUS_DEFAULT_1
1589 config NR_CPUS_DEFAULT_2
1592 config NR_CPUS_DEFAULT_4
1595 config NR_CPUS_DEFAULT_8
1598 config NR_CPUS_DEFAULT_16
1601 config NR_CPUS_DEFAULT_32
1604 config NR_CPUS_DEFAULT_64
1608 int "Maximum number of CPUs (2-64)"
1609 range 1 64 if NR_CPUS_DEFAULT_1
1611 default "1" if NR_CPUS_DEFAULT_1
1612 default "2" if NR_CPUS_DEFAULT_2
1613 default "4" if NR_CPUS_DEFAULT_4
1614 default "8" if NR_CPUS_DEFAULT_8
1615 default "16" if NR_CPUS_DEFAULT_16
1616 default "32" if NR_CPUS_DEFAULT_32
1617 default "64" if NR_CPUS_DEFAULT_64
1619 This allows you to specify the maximum number of CPUs which this
1620 kernel will support. The maximum supported value is 32 for 32-bit
1621 kernel and 64 for 64-bit kernels; the minimum value which makes
1622 sense is 1 for Qemu (useful only for kernel debugging purposes)
1623 and 2 for all others.
1625 This is purely to save memory - each supported CPU adds
1626 approximately eight kilobytes to the kernel image. For best
1627 performance should round up your number of processors to the next
1631 # Timer Interrupt Frequency Configuration
1635 prompt "Timer frequency"
1638 Allows the configuration of the timer frequency.
1641 bool "48 HZ" if SYS_SUPPORTS_48HZ
1644 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1647 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1650 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1653 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1656 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1659 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1663 config SYS_SUPPORTS_48HZ
1666 config SYS_SUPPORTS_100HZ
1669 config SYS_SUPPORTS_128HZ
1672 config SYS_SUPPORTS_250HZ
1675 config SYS_SUPPORTS_256HZ
1678 config SYS_SUPPORTS_1000HZ
1681 config SYS_SUPPORTS_1024HZ
1684 config SYS_SUPPORTS_ARBIT_HZ
1686 default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1687 !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1688 !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1689 !SYS_SUPPORTS_1024HZ
1694 default 100 if HZ_100
1695 default 128 if HZ_128
1696 default 250 if HZ_250
1697 default 256 if HZ_256
1698 default 1000 if HZ_1000
1699 default 1024 if HZ_1024
1701 source "kernel/Kconfig.preempt"
1703 config MIPS_INSANE_LARGE
1704 bool "Support for large 64-bit configurations"
1705 depends on CPU_R10000 && 64BIT
1707 MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1708 previous 64-bit processors which only supported 40 bit / 1TB. If you
1709 need processes of more than 1TB virtual address space, say Y here.
1710 This will result in additional memory usage, so it is not
1711 recommended for normal users.
1714 bool "Kexec system call (EXPERIMENTAL)"
1715 depends on EXPERIMENTAL
1717 kexec is a system call that implements the ability to shutdown your
1718 current kernel, and to start another kernel. It is like a reboot
1719 but it is independent of the system firmware. And like a reboot
1720 you can start any kernel with it, not just Linux.
1722 The name comes from the similiarity to the exec system call.
1724 It is an ongoing process to be certain the hardware in a machine
1725 is properly shutdown, so do not be surprised if this code does not
1726 initially work for you. It may help to enable device hotplugging
1727 support. As of this writing the exact hardware interface is
1728 strongly in flux, so no good recommendation can be made.
1731 bool "Enable seccomp to safely compute untrusted bytecode"
1735 This kernel feature is useful for number crunching applications
1736 that may need to compute untrusted bytecode during their
1737 execution. By using pipes or other transports made available to
1738 the process as file descriptors supporting the read/write
1739 syscalls, it's possible to isolate those applications in
1740 their own address space using seccomp. Once seccomp is
1741 enabled via /proc/<pid>/seccomp, it cannot be disabled
1742 and the task is only allowed to execute a few safe syscalls
1743 defined by each seccomp mode.
1745 If unsure, say Y. Only embedded should say N here.
1749 config RWSEM_GENERIC_SPINLOCK
1753 config LOCKDEP_SUPPORT
1757 config STACKTRACE_SUPPORT
1761 source "init/Kconfig"
1763 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1771 bool "Support for PCI controller"
1772 depends on HW_HAS_PCI
1774 Find out whether you have a PCI motherboard. PCI is the name of a
1775 bus system, i.e. the way the CPU talks to the other stuff inside
1776 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1779 The PCI-HOWTO, available from
1780 <http://www.tldp.org/docs.html#howto>, contains valuable
1781 information about which PCI hardware does work under Linux and which
1788 source "drivers/pci/Kconfig"
1791 # ISA support is now enabled via select. Too many systems still have the one
1792 # or other ISA chip on the board that users don't know about so don't expect
1793 # users to choose the right thing ...
1800 depends on HW_HAS_EISA
1802 select GENERIC_ISA_DMA
1804 The Extended Industry Standard Architecture (EISA) bus was
1805 developed as an open alternative to the IBM MicroChannel bus.
1807 The EISA bus provided some of the features of the IBM MicroChannel
1808 bus while maintaining backward compatibility with cards made for
1809 the older ISA bus. The EISA bus saw limited use between 1988 and
1810 1995 when it was made obsolete by the PCI bus.
1812 Say Y here if you are building a kernel for an EISA-based machine.
1816 source "drivers/eisa/Kconfig"
1819 bool "TURBOchannel support"
1820 depends on MACH_DECSTATION
1822 TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1823 processors. Documentation on writing device drivers for TurboChannel
1825 <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1828 # bool "Access.Bus support"
1838 source "drivers/pcmcia/Kconfig"
1840 source "drivers/pci/hotplug/Kconfig"
1844 menu "Executable file formats"
1846 source "fs/Kconfig.binfmt"
1852 bool "Use 64-bit ELF format for building"
1855 A 64-bit kernel is usually built using the 64-bit ELF binary object
1856 format as it's one that allows arbitrary 64-bit constructs. For
1857 kernels that are loaded within the KSEG compatibility segments the
1858 32-bit ELF format can optionally be used resulting in a somewhat
1859 smaller binary, but this option is not explicitly supported by the
1860 toolchain and since binutils 2.14 it does not even work at all.
1862 Say Y to use the 64-bit format or N to use the 32-bit one.
1867 bool "Include IRIX binary compatibility"
1868 depends on CPU_BIG_ENDIAN && 32BIT && BROKEN
1870 config MIPS32_COMPAT
1871 bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
1874 Select this option if you want Linux/MIPS 32-bit binary
1875 compatibility. Since all software available for Linux/MIPS is
1876 currently 32-bit you should say Y here.
1880 depends on MIPS32_COMPAT
1883 config SYSVIPC_COMPAT
1885 depends on COMPAT && SYSVIPC
1889 bool "Kernel support for o32 binaries"
1890 depends on MIPS32_COMPAT
1892 Select this option if you want to run o32 binaries. These are pure
1893 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
1894 existing binaries are in this format.
1899 bool "Kernel support for n32 binaries"
1900 depends on MIPS32_COMPAT
1902 Select this option if you want to run n32 binaries. These are
1903 64-bit binaries using 32-bit quantities for addressing and certain
1904 data that would normally be 64-bit. They are used in special
1911 default y if MIPS32_O32 || MIPS32_N32
1915 menu "Power management options"
1917 source "kernel/power/Kconfig"
1921 source "net/Kconfig"
1923 source "drivers/Kconfig"
1927 source "arch/mips/oprofile/Kconfig"
1929 source "arch/mips/Kconfig.debug"
1931 source "security/Kconfig"
1933 source "crypto/Kconfig"
1935 source "lib/Kconfig"