xref: /linux/arch/mips/Kconfig (revision 3eeebf17f31c583f83e081b17b3076477cb96886)
1config MIPS
2	bool
3	default y
4	select HAVE_IDE
5	select HAVE_OPROFILE
6	select HAVE_ARCH_KGDB
7	# Horrible source of confusion.  Die, die, die ...
8	select EMBEDDED
9	select RTC_LIB
10
11mainmenu "Linux/MIPS Kernel Configuration"
12
13menu "Machine selection"
14
15config ZONE_DMA
16	bool
17
18choice
19	prompt "System type"
20	default SGI_IP22
21
22config MACH_ALCHEMY
23	bool "Alchemy processor based machines"
24
25config BASLER_EXCITE
26	bool "Basler eXcite smart camera"
27	select CEVT_R4K
28	select CSRC_R4K
29	select DMA_COHERENT
30	select HW_HAS_PCI
31	select IRQ_CPU
32	select IRQ_CPU_RM7K
33	select IRQ_CPU_RM9K
34	select MIPS_RM9122
35	select SYS_HAS_CPU_RM9000
36	select SYS_SUPPORTS_32BIT_KERNEL
37	select SYS_SUPPORTS_BIG_ENDIAN
38	help
39	  The eXcite is a smart camera platform manufactured by
40	  Basler Vision Technologies AG.
41
42config BCM47XX
43	bool "BCM47XX based boards"
44	select CEVT_R4K
45	select CSRC_R4K
46	select DMA_NONCOHERENT
47	select HW_HAS_PCI
48	select IRQ_CPU
49	select SYS_HAS_CPU_MIPS32_R1
50	select SYS_SUPPORTS_32BIT_KERNEL
51	select SYS_SUPPORTS_LITTLE_ENDIAN
52	select SSB
53	select SSB_DRIVER_MIPS
54	select SSB_DRIVER_EXTIF
55	select SSB_EMBEDDED
56	select SSB_PCICORE_HOSTMODE if PCI
57	select GENERIC_GPIO
58	select SYS_HAS_EARLY_PRINTK
59	select CFE
60	help
61	 Support for BCM47XX based boards
62
63config MIPS_COBALT
64	bool "Cobalt Server"
65	select CEVT_R4K
66	select CSRC_R4K
67	select CEVT_GT641XX
68	select DMA_NONCOHERENT
69	select HW_HAS_PCI
70	select I8253
71	select I8259
72	select IRQ_CPU
73	select IRQ_GT641XX
74	select PCI_GT64XXX_PCI0
75	select SYS_HAS_CPU_NEVADA
76	select SYS_HAS_EARLY_PRINTK
77	select SYS_SUPPORTS_32BIT_KERNEL
78	select SYS_SUPPORTS_64BIT_KERNEL
79	select SYS_SUPPORTS_LITTLE_ENDIAN
80	select GENERIC_HARDIRQS_NO__DO_IRQ
81
82config MACH_DECSTATION
83	bool "DECstations"
84	select BOOT_ELF32
85	select CEVT_DS1287
86	select CEVT_R4K
87	select CSRC_IOASIC
88	select CSRC_R4K
89	select CPU_DADDI_WORKAROUNDS if 64BIT
90	select CPU_R4000_WORKAROUNDS if 64BIT
91	select CPU_R4400_WORKAROUNDS if 64BIT
92	select DMA_NONCOHERENT
93	select NO_IOPORT
94	select IRQ_CPU
95	select SYS_HAS_CPU_R3000
96	select SYS_HAS_CPU_R4X00
97	select SYS_SUPPORTS_32BIT_KERNEL
98	select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
99	select SYS_SUPPORTS_LITTLE_ENDIAN
100	select SYS_SUPPORTS_128HZ
101	select SYS_SUPPORTS_256HZ
102	select SYS_SUPPORTS_1024HZ
103	help
104	  This enables support for DEC's MIPS based workstations.  For details
105	  see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
106	  DECstation porting pages on <http://decstation.unix-ag.org/>.
107
108	  If you have one of the following DECstation Models you definitely
109	  want to choose R4xx0 for the CPU Type:
110
111		DECstation 5000/50
112		DECstation 5000/150
113		DECstation 5000/260
114		DECsystem 5900/260
115
116	  otherwise choose R3000.
117
118config MACH_JAZZ
119	bool "Jazz family of machines"
120	select ARC
121	select ARC32
122	select ARCH_MAY_HAVE_PC_FDC
123	select CEVT_R4K
124	select CSRC_R4K
125	select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
126	select GENERIC_ISA_DMA
127	select IRQ_CPU
128	select I8253
129	select I8259
130	select ISA
131	select SYS_HAS_CPU_R4X00
132	select SYS_SUPPORTS_32BIT_KERNEL
133	select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
134	select SYS_SUPPORTS_100HZ
135	select GENERIC_HARDIRQS_NO__DO_IRQ
136	help
137	 This a family of machines based on the MIPS R4030 chipset which was
138	 used by several vendors to build RISC/os and Windows NT workstations.
139	 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millenium and
140	 Olivetti M700-10 workstations.
141
142config LASAT
143	bool "LASAT Networks platforms"
144	select CEVT_R4K
145	select CSRC_R4K
146	select DMA_NONCOHERENT
147	select SYS_HAS_EARLY_PRINTK
148	select HW_HAS_PCI
149	select IRQ_CPU
150	select PCI_GT64XXX_PCI0
151	select MIPS_NILE4
152	select R5000_CPU_SCACHE
153	select SYS_HAS_CPU_R5000
154	select SYS_SUPPORTS_32BIT_KERNEL
155	select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
156	select SYS_SUPPORTS_LITTLE_ENDIAN
157	select GENERIC_HARDIRQS_NO__DO_IRQ
158
159config LEMOTE_FULONG
160	bool "Lemote Fulong mini-PC"
161	select ARCH_SPARSEMEM_ENABLE
162	select CEVT_R4K
163	select CSRC_R4K
164	select SYS_HAS_CPU_LOONGSON2
165	select DMA_NONCOHERENT
166	select BOOT_ELF32
167	select BOARD_SCACHE
168	select HAVE_STD_PC_SERIAL_PORT
169	select HW_HAS_PCI
170	select I8259
171	select ISA
172	select IRQ_CPU
173	select SYS_SUPPORTS_32BIT_KERNEL
174	select SYS_SUPPORTS_64BIT_KERNEL
175	select SYS_SUPPORTS_LITTLE_ENDIAN
176	select SYS_SUPPORTS_HIGHMEM
177	select SYS_HAS_EARLY_PRINTK
178	select GENERIC_HARDIRQS_NO__DO_IRQ
179	select GENERIC_ISA_DMA_SUPPORT_BROKEN
180	select CPU_HAS_WB
181	help
182	  Lemote Fulong mini-PC board based on the Chinese Loongson-2E CPU and
183	  an FPGA northbridge
184
185config MIPS_MALTA
186	bool "MIPS Malta board"
187	select ARCH_MAY_HAVE_PC_FDC
188	select BOOT_ELF32
189	select BOOT_RAW
190	select CEVT_R4K
191	select CSRC_R4K
192	select DMA_NONCOHERENT
193	select GENERIC_ISA_DMA
194	select IRQ_CPU
195	select IRQ_GIC
196	select HW_HAS_PCI
197	select I8253
198	select I8259
199	select MIPS_BOARDS_GEN
200	select MIPS_BONITO64
201	select MIPS_CPU_SCACHE
202	select PCI_GT64XXX_PCI0
203	select MIPS_MSC
204	select SWAP_IO_SPACE
205	select SYS_HAS_CPU_MIPS32_R1
206	select SYS_HAS_CPU_MIPS32_R2
207	select SYS_HAS_CPU_MIPS64_R1
208	select SYS_HAS_CPU_NEVADA
209	select SYS_HAS_CPU_RM7000
210	select SYS_HAS_EARLY_PRINTK
211	select SYS_SUPPORTS_32BIT_KERNEL
212	select SYS_SUPPORTS_64BIT_KERNEL
213	select SYS_SUPPORTS_BIG_ENDIAN
214	select SYS_SUPPORTS_LITTLE_ENDIAN
215	select SYS_SUPPORTS_MIPS_CMP if BROKEN	# because SYNC_R4K is broken
216	select SYS_SUPPORTS_MULTITHREADING
217	select SYS_SUPPORTS_SMARTMIPS
218	help
219	  This enables support for the MIPS Technologies Malta evaluation
220	  board.
221
222config MIPS_SIM
223	bool 'MIPS simulator (MIPSsim)'
224	select CEVT_R4K
225	select CSRC_R4K
226	select DMA_NONCOHERENT
227	select SYS_HAS_EARLY_PRINTK
228	select IRQ_CPU
229	select BOOT_RAW
230	select SYS_HAS_CPU_MIPS32_R1
231	select SYS_HAS_CPU_MIPS32_R2
232	select SYS_HAS_EARLY_PRINTK
233	select SYS_SUPPORTS_32BIT_KERNEL
234	select SYS_SUPPORTS_BIG_ENDIAN
235	select SYS_SUPPORTS_MULTITHREADING
236	select SYS_SUPPORTS_LITTLE_ENDIAN
237	help
238	  This option enables support for MIPS Technologies MIPSsim software
239	  emulator.
240
241config MACH_EMMA
242	bool "NEC EMMA series based machines"
243
244config MACH_VR41XX
245	bool "NEC VR4100 series based machines"
246	select CEVT_R4K
247	select CSRC_R4K
248	select SYS_HAS_CPU_VR41XX
249	select GENERIC_HARDIRQS_NO__DO_IRQ
250
251config NXP_STB220
252	bool "NXP STB220 board"
253	select SOC_PNX833X
254	help
255	 Support for NXP Semiconductors STB220 Development Board.
256
257config NXP_STB225
258	bool "NXP 225 board"
259	select SOC_PNX833X
260	select SOC_PNX8335
261	help
262	 Support for NXP Semiconductors STB225 Development Board.
263
264config PNX8550_JBS
265	bool "NXP PNX8550 based JBS board"
266	select PNX8550
267	select SYS_SUPPORTS_LITTLE_ENDIAN
268
269config PNX8550_STB810
270	bool "NXP PNX8550 based STB810 board"
271	select PNX8550
272	select SYS_SUPPORTS_LITTLE_ENDIAN
273
274config PMC_MSP
275	bool "PMC-Sierra MSP chipsets"
276	depends on EXPERIMENTAL
277	select DMA_NONCOHERENT
278	select SWAP_IO_SPACE
279	select NO_EXCEPT_FILL
280	select BOOT_RAW
281	select SYS_HAS_CPU_MIPS32_R1
282	select SYS_HAS_CPU_MIPS32_R2
283	select SYS_SUPPORTS_32BIT_KERNEL
284	select SYS_SUPPORTS_BIG_ENDIAN
285	select IRQ_CPU
286	select SERIAL_8250
287	select SERIAL_8250_CONSOLE
288	help
289	  This adds support for the PMC-Sierra family of Multi-Service
290	  Processor System-On-A-Chips.  These parts include a number
291	  of integrated peripherals, interfaces and DSPs in addition to
292	  a variety of MIPS cores.
293
294config PMC_YOSEMITE
295	bool "PMC-Sierra Yosemite eval board"
296	select CEVT_R4K
297	select CSRC_R4K
298	select DMA_COHERENT
299	select HW_HAS_PCI
300	select IRQ_CPU
301	select IRQ_CPU_RM7K
302	select IRQ_CPU_RM9K
303	select SWAP_IO_SPACE
304	select SYS_HAS_CPU_RM9000
305	select SYS_HAS_EARLY_PRINTK
306	select SYS_SUPPORTS_32BIT_KERNEL
307	select SYS_SUPPORTS_64BIT_KERNEL
308	select SYS_SUPPORTS_BIG_ENDIAN
309	select SYS_SUPPORTS_HIGHMEM
310	select SYS_SUPPORTS_SMP
311	help
312	  Yosemite is an evaluation board for the RM9000x2 processor
313	  manufactured by PMC-Sierra.
314
315config SGI_IP22
316	bool "SGI IP22 (Indy/Indigo2)"
317	select ARC
318	select ARC32
319	select BOOT_ELF32
320	select CEVT_R4K
321	select CSRC_R4K
322	select DEFAULT_SGI_PARTITION
323	select DMA_NONCOHERENT
324	select HW_HAS_EISA
325	select I8253
326	select I8259
327	select IP22_CPU_SCACHE
328	select IRQ_CPU
329	select GENERIC_ISA_DMA_SUPPORT_BROKEN
330	select SGI_HAS_DS1286
331	select SGI_HAS_I8042
332	select SGI_HAS_INDYDOG
333	select SGI_HAS_HAL2
334	select SGI_HAS_SEEQ
335	select SGI_HAS_WD93
336	select SGI_HAS_ZILOG
337	select SWAP_IO_SPACE
338	select SYS_HAS_CPU_R4X00
339	select SYS_HAS_CPU_R5000
340	select SYS_HAS_EARLY_PRINTK
341	select SYS_SUPPORTS_32BIT_KERNEL
342	select SYS_SUPPORTS_64BIT_KERNEL
343	select SYS_SUPPORTS_BIG_ENDIAN
344	help
345	  This are the SGI Indy, Challenge S and Indigo2, as well as certain
346	  OEM variants like the Tandem CMN B006S. To compile a Linux kernel
347	  that runs on these, say Y here.
348
349config SGI_IP27
350	bool "SGI IP27 (Origin200/2000)"
351	select ARC
352	select ARC64
353	select BOOT_ELF64
354	select DEFAULT_SGI_PARTITION
355	select DMA_IP27
356	select SYS_HAS_EARLY_PRINTK
357	select HW_HAS_PCI
358	select NR_CPUS_DEFAULT_64
359	select SYS_HAS_CPU_R10000
360	select SYS_SUPPORTS_64BIT_KERNEL
361	select SYS_SUPPORTS_BIG_ENDIAN
362	select SYS_SUPPORTS_NUMA
363	select SYS_SUPPORTS_SMP
364	select GENERIC_HARDIRQS_NO__DO_IRQ
365	help
366	  This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
367	  workstations.  To compile a Linux kernel that runs on these, say Y
368	  here.
369
370config SGI_IP28
371	bool "SGI IP28 (Indigo2 R10k) (EXPERIMENTAL)"
372	depends on EXPERIMENTAL
373	select ARC
374	select ARC64
375	select BOOT_ELF64
376	select CEVT_R4K
377	select CSRC_R4K
378	select DEFAULT_SGI_PARTITION
379	select DMA_NONCOHERENT
380	select GENERIC_ISA_DMA_SUPPORT_BROKEN
381	select IRQ_CPU
382	select HW_HAS_EISA
383	select I8253
384	select I8259
385	select SGI_HAS_DS1286
386	select SGI_HAS_I8042
387	select SGI_HAS_INDYDOG
388	select SGI_HAS_HAL2
389	select SGI_HAS_SEEQ
390	select SGI_HAS_WD93
391	select SGI_HAS_ZILOG
392	select SWAP_IO_SPACE
393	select SYS_HAS_CPU_R10000
394	select SYS_HAS_EARLY_PRINTK
395	select SYS_SUPPORTS_64BIT_KERNEL
396	select SYS_SUPPORTS_BIG_ENDIAN
397      help
398        This is the SGI Indigo2 with R10000 processor.  To compile a Linux
399        kernel that runs on these, say Y here.
400
401config SGI_IP32
402	bool "SGI IP32 (O2)"
403	select ARC
404	select ARC32
405	select BOOT_ELF32
406	select CEVT_R4K
407	select CSRC_R4K
408	select DMA_NONCOHERENT
409	select HW_HAS_PCI
410	select IRQ_CPU
411	select R5000_CPU_SCACHE
412	select RM7000_CPU_SCACHE
413	select SYS_HAS_CPU_R5000
414	select SYS_HAS_CPU_R10000 if BROKEN
415	select SYS_HAS_CPU_RM7000
416	select SYS_HAS_CPU_NEVADA
417	select SYS_SUPPORTS_64BIT_KERNEL
418	select SYS_SUPPORTS_BIG_ENDIAN
419	help
420	  If you want this kernel to run on SGI O2 workstation, say Y here.
421
422config SIBYTE_CRHINE
423	bool "Sibyte BCM91120C-CRhine"
424	depends on EXPERIMENTAL
425	select BOOT_ELF32
426	select DMA_COHERENT
427	select SIBYTE_BCM1120
428	select SWAP_IO_SPACE
429	select SYS_HAS_CPU_SB1
430	select SYS_SUPPORTS_BIG_ENDIAN
431	select SYS_SUPPORTS_LITTLE_ENDIAN
432
433config SIBYTE_CARMEL
434	bool "Sibyte BCM91120x-Carmel"
435	depends on EXPERIMENTAL
436	select BOOT_ELF32
437	select DMA_COHERENT
438	select SIBYTE_BCM1120
439	select SWAP_IO_SPACE
440	select SYS_HAS_CPU_SB1
441	select SYS_SUPPORTS_BIG_ENDIAN
442	select SYS_SUPPORTS_LITTLE_ENDIAN
443
444config SIBYTE_CRHONE
445	bool "Sibyte BCM91125C-CRhone"
446	depends on EXPERIMENTAL
447	select BOOT_ELF32
448	select DMA_COHERENT
449	select SIBYTE_BCM1125
450	select SWAP_IO_SPACE
451	select SYS_HAS_CPU_SB1
452	select SYS_SUPPORTS_BIG_ENDIAN
453	select SYS_SUPPORTS_HIGHMEM
454	select SYS_SUPPORTS_LITTLE_ENDIAN
455
456config SIBYTE_RHONE
457	bool "Sibyte BCM91125E-Rhone"
458	depends on EXPERIMENTAL
459	select BOOT_ELF32
460	select DMA_COHERENT
461	select SIBYTE_BCM1125H
462	select SWAP_IO_SPACE
463	select SYS_HAS_CPU_SB1
464	select SYS_SUPPORTS_BIG_ENDIAN
465	select SYS_SUPPORTS_LITTLE_ENDIAN
466
467config SIBYTE_SWARM
468	bool "Sibyte BCM91250A-SWARM"
469	select BOOT_ELF32
470	select DMA_COHERENT
471	select NR_CPUS_DEFAULT_2
472	select SIBYTE_SB1250
473	select SWAP_IO_SPACE
474	select SYS_HAS_CPU_SB1
475	select SYS_SUPPORTS_BIG_ENDIAN
476	select SYS_SUPPORTS_HIGHMEM
477	select SYS_SUPPORTS_LITTLE_ENDIAN
478	select ZONE_DMA32 if 64BIT
479
480config SIBYTE_LITTLESUR
481	bool "Sibyte BCM91250C2-LittleSur"
482	depends on EXPERIMENTAL
483	select BOOT_ELF32
484	select DMA_COHERENT
485	select NR_CPUS_DEFAULT_2
486	select SIBYTE_SB1250
487	select SWAP_IO_SPACE
488	select SYS_HAS_CPU_SB1
489	select SYS_SUPPORTS_BIG_ENDIAN
490	select SYS_SUPPORTS_HIGHMEM
491	select SYS_SUPPORTS_LITTLE_ENDIAN
492
493config SIBYTE_SENTOSA
494	bool "Sibyte BCM91250E-Sentosa"
495	depends on EXPERIMENTAL
496	select BOOT_ELF32
497	select DMA_COHERENT
498	select NR_CPUS_DEFAULT_2
499	select SIBYTE_SB1250
500	select SWAP_IO_SPACE
501	select SYS_HAS_CPU_SB1
502	select SYS_SUPPORTS_BIG_ENDIAN
503	select SYS_SUPPORTS_LITTLE_ENDIAN
504
505config SIBYTE_BIGSUR
506	bool "Sibyte BCM91480B-BigSur"
507	select BOOT_ELF32
508	select DMA_COHERENT
509	select NR_CPUS_DEFAULT_4
510	select SIBYTE_BCM1x80
511	select SWAP_IO_SPACE
512	select SYS_HAS_CPU_SB1
513	select SYS_SUPPORTS_BIG_ENDIAN
514	select SYS_SUPPORTS_HIGHMEM
515	select SYS_SUPPORTS_LITTLE_ENDIAN
516	select ZONE_DMA32 if 64BIT
517
518config SNI_RM
519	bool "SNI RM200/300/400"
520	select ARC if CPU_LITTLE_ENDIAN
521	select ARC32 if CPU_LITTLE_ENDIAN
522	select SNIPROM if CPU_BIG_ENDIAN
523	select ARCH_MAY_HAVE_PC_FDC
524	select BOOT_ELF32
525	select CEVT_R4K
526	select CSRC_R4K
527	select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
528	select DMA_NONCOHERENT
529	select GENERIC_ISA_DMA
530	select HW_HAS_EISA
531	select HW_HAS_PCI
532	select IRQ_CPU
533	select I8253
534	select I8259
535	select ISA
536	select SWAP_IO_SPACE if CPU_BIG_ENDIAN
537	select SYS_HAS_CPU_R4X00
538	select SYS_HAS_CPU_R5000
539	select SYS_HAS_CPU_R10000
540	select R5000_CPU_SCACHE
541	select SYS_HAS_EARLY_PRINTK
542	select SYS_SUPPORTS_32BIT_KERNEL
543	select SYS_SUPPORTS_64BIT_KERNEL if EXPERIMENTAL
544	select SYS_SUPPORTS_BIG_ENDIAN
545	select SYS_SUPPORTS_HIGHMEM
546	select SYS_SUPPORTS_LITTLE_ENDIAN
547	help
548	  The SNI RM200/300/400 are MIPS-based machines manufactured by
549	  Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
550	  Technology and now in turn merged with Fujitsu.  Say Y here to
551	  support this machine type.
552
553config MACH_TX39XX
554	bool "Toshiba TX39 series based machines"
555
556config MACH_TX49XX
557	bool "Toshiba TX49 series based machines"
558
559config MIKROTIK_RB532
560	bool "Mikrotik RB532 boards"
561	select CEVT_R4K
562	select CSRC_R4K
563	select DMA_NONCOHERENT
564	select GENERIC_HARDIRQS_NO__DO_IRQ
565	select HW_HAS_PCI
566	select IRQ_CPU
567	select SYS_HAS_CPU_MIPS32_R1
568	select SYS_SUPPORTS_32BIT_KERNEL
569	select SYS_SUPPORTS_LITTLE_ENDIAN
570	select SWAP_IO_SPACE
571	select BOOT_RAW
572	select ARCH_REQUIRE_GPIOLIB
573	help
574	  Support the Mikrotik(tm) RouterBoard 532 series,
575	  based on the IDT RC32434 SoC.
576
577config WR_PPMC
578	bool "Wind River PPMC board"
579	select CEVT_R4K
580	select CSRC_R4K
581	select IRQ_CPU
582	select BOOT_ELF32
583	select DMA_NONCOHERENT
584	select HW_HAS_PCI
585	select PCI_GT64XXX_PCI0
586	select SWAP_IO_SPACE
587	select SYS_HAS_CPU_MIPS32_R1
588	select SYS_HAS_CPU_MIPS32_R2
589	select SYS_HAS_CPU_MIPS64_R1
590	select SYS_HAS_CPU_NEVADA
591	select SYS_HAS_CPU_RM7000
592	select SYS_SUPPORTS_32BIT_KERNEL
593	select SYS_SUPPORTS_64BIT_KERNEL
594	select SYS_SUPPORTS_BIG_ENDIAN
595	select SYS_SUPPORTS_LITTLE_ENDIAN
596	help
597	  This enables support for the Wind River MIPS32 4KC PPMC evaluation
598	  board, which is based on GT64120 bridge chip.
599
600endchoice
601
602source "arch/mips/alchemy/Kconfig"
603source "arch/mips/basler/excite/Kconfig"
604source "arch/mips/emma/Kconfig"
605source "arch/mips/jazz/Kconfig"
606source "arch/mips/lasat/Kconfig"
607source "arch/mips/pmc-sierra/Kconfig"
608source "arch/mips/sgi-ip27/Kconfig"
609source "arch/mips/sibyte/Kconfig"
610source "arch/mips/txx9/Kconfig"
611source "arch/mips/vr41xx/Kconfig"
612
613endmenu
614
615config RWSEM_GENERIC_SPINLOCK
616	bool
617	default y
618
619config RWSEM_XCHGADD_ALGORITHM
620	bool
621
622config ARCH_HAS_ILOG2_U32
623	bool
624	default n
625
626config ARCH_HAS_ILOG2_U64
627	bool
628	default n
629
630config ARCH_SUPPORTS_OPROFILE
631	bool
632	default y if !MIPS_MT_SMTC
633
634config GENERIC_FIND_NEXT_BIT
635	bool
636	default y
637
638config GENERIC_HWEIGHT
639	bool
640	default y
641
642config GENERIC_CALIBRATE_DELAY
643	bool
644	default y
645
646config GENERIC_CLOCKEVENTS
647	bool
648	default y
649
650config GENERIC_TIME
651	bool
652	default y
653
654config GENERIC_CMOS_UPDATE
655	bool
656	default y
657
658config SCHED_NO_NO_OMIT_FRAME_POINTER
659	bool
660	default y
661
662config GENERIC_HARDIRQS_NO__DO_IRQ
663	bool
664	default n
665
666#
667# Select some configuration options automatically based on user selections.
668#
669config ARC
670	bool
671
672config ARCH_MAY_HAVE_PC_FDC
673	bool
674
675config BOOT_RAW
676	bool
677
678config CEVT_BCM1480
679	bool
680
681config CEVT_DS1287
682	bool
683
684config CEVT_GT641XX
685	bool
686
687config CEVT_R4K
688	bool
689
690config CEVT_SB1250
691	bool
692
693config CEVT_TXX9
694	bool
695
696config CSRC_BCM1480
697	bool
698
699config CSRC_IOASIC
700	bool
701
702config CSRC_R4K
703	bool
704
705config CSRC_SB1250
706	bool
707
708config GPIO_TXX9
709	select GENERIC_GPIO
710	select ARCH_REQUIRE_GPIOLIB
711	bool
712
713config CFE
714	bool
715
716config DMA_COHERENT
717	bool
718
719config DMA_IP27
720	bool
721
722config DMA_NONCOHERENT
723	bool
724	select DMA_NEED_PCI_MAP_STATE
725
726config DMA_NEED_PCI_MAP_STATE
727	bool
728
729config EARLY_PRINTK
730	bool "Early printk" if EMBEDDED && DEBUG_KERNEL
731	depends on SYS_HAS_EARLY_PRINTK
732	default y
733	help
734	  This option enables special console drivers which allow the kernel
735	  to print messages very early in the bootup process.
736
737	  This is useful for kernel debugging when your machine crashes very
738	  early before the console code is initialized. For normal operation,
739	  it is not recommended because it looks ugly on some machines and
740	  doesn't cooperate with an X server. You should normally say N here,
741	  unless you want to debug such a crash.
742
743config SYS_HAS_EARLY_PRINTK
744	bool
745
746config HOTPLUG_CPU
747	bool
748	default n
749
750config I8259
751	bool
752
753config MIPS_BONITO64
754	bool
755
756config MIPS_MSC
757	bool
758
759config MIPS_NILE4
760	bool
761
762config MIPS_DISABLE_OBSOLETE_IDE
763	bool
764
765config SYNC_R4K
766	bool
767
768config NO_IOPORT
769	def_bool n
770
771config GENERIC_ISA_DMA
772	bool
773	select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
774
775config GENERIC_ISA_DMA_SUPPORT_BROKEN
776	bool
777	select GENERIC_ISA_DMA
778
779config GENERIC_GPIO
780	bool
781
782#
783# Endianess selection.  Sufficiently obscure so many users don't know what to
784# answer,so we try hard to limit the available choices.  Also the use of a
785# choice statement should be more obvious to the user.
786#
787choice
788	prompt "Endianess selection"
789	help
790	  Some MIPS machines can be configured for either little or big endian
791	  byte order. These modes require different kernels and a different
792	  Linux distribution.  In general there is one preferred byteorder for a
793	  particular system but some systems are just as commonly used in the
794	  one or the other endianness.
795
796config CPU_BIG_ENDIAN
797	bool "Big endian"
798	depends on SYS_SUPPORTS_BIG_ENDIAN
799
800config CPU_LITTLE_ENDIAN
801	bool "Little endian"
802	depends on SYS_SUPPORTS_LITTLE_ENDIAN
803	help
804
805endchoice
806
807config SYS_SUPPORTS_APM_EMULATION
808	bool
809
810config SYS_SUPPORTS_BIG_ENDIAN
811	bool
812
813config SYS_SUPPORTS_LITTLE_ENDIAN
814	bool
815
816config IRQ_CPU
817	bool
818
819config IRQ_CPU_RM7K
820	bool
821
822config IRQ_CPU_RM9K
823	bool
824
825config IRQ_MSP_SLP
826	bool
827
828config IRQ_MSP_CIC
829	bool
830
831config IRQ_TXX9
832	bool
833
834config IRQ_GT641XX
835	bool
836
837config IRQ_GIC
838	bool
839
840config MIPS_BOARDS_GEN
841	bool
842
843config PCI_GT64XXX_PCI0
844	bool
845
846config NO_EXCEPT_FILL
847	bool
848
849config MIPS_RM9122
850	bool
851	select SERIAL_RM9000
852
853config SOC_PNX833X
854	bool
855	select CEVT_R4K
856	select CSRC_R4K
857	select IRQ_CPU
858	select DMA_NONCOHERENT
859	select SYS_HAS_CPU_MIPS32_R2
860	select SYS_SUPPORTS_32BIT_KERNEL
861	select SYS_SUPPORTS_LITTLE_ENDIAN
862	select SYS_SUPPORTS_BIG_ENDIAN
863	select GENERIC_HARDIRQS_NO__DO_IRQ
864	select GENERIC_GPIO
865	select CPU_MIPSR2_IRQ_VI
866
867config SOC_PNX8335
868	bool
869	select SOC_PNX833X
870
871config PNX8550
872	bool
873	select SOC_PNX8550
874
875config SOC_PNX8550
876	bool
877	select DMA_NONCOHERENT
878	select HW_HAS_PCI
879	select SYS_HAS_CPU_MIPS32_R1
880	select SYS_HAS_EARLY_PRINTK
881	select SYS_SUPPORTS_32BIT_KERNEL
882	select GENERIC_HARDIRQS_NO__DO_IRQ
883	select GENERIC_GPIO
884
885config SWAP_IO_SPACE
886	bool
887
888config EMMA2RH
889	bool
890	depends on MARKEINS
891	default y
892
893config SERIAL_RM9000
894	bool
895
896config SGI_HAS_DS1286
897	bool
898
899config SGI_HAS_INDYDOG
900	bool
901
902config SGI_HAS_HAL2
903	bool
904
905config SGI_HAS_SEEQ
906	bool
907
908config SGI_HAS_WD93
909	bool
910
911config SGI_HAS_ZILOG
912	bool
913
914config SGI_HAS_I8042
915	bool
916
917config DEFAULT_SGI_PARTITION
918	bool
919
920config ARC32
921	bool
922
923config SNIPROM
924	bool
925
926config BOOT_ELF32
927	bool
928
929config MIPS_L1_CACHE_SHIFT
930	int
931	default "4" if MACH_DECSTATION || MIKROTIK_RB532
932	default "7" if SGI_IP22 || SGI_IP27 || SGI_IP28 || SNI_RM
933	default "4" if PMC_MSP4200_EVAL
934	default "5"
935
936config HAVE_STD_PC_SERIAL_PORT
937	bool
938
939config ARC_CONSOLE
940	bool "ARC console support"
941	depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
942
943config ARC_MEMORY
944	bool
945	depends on MACH_JAZZ || SNI_RM || SGI_IP32
946	default y
947
948config ARC_PROMLIB
949	bool
950	depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
951	default y
952
953config ARC64
954	bool
955
956config BOOT_ELF64
957	bool
958
959menu "CPU selection"
960
961choice
962	prompt "CPU type"
963	default CPU_R4X00
964
965config CPU_LOONGSON2
966	bool "Loongson 2"
967	depends on SYS_HAS_CPU_LOONGSON2
968	select CPU_SUPPORTS_32BIT_KERNEL
969	select CPU_SUPPORTS_64BIT_KERNEL
970	select CPU_SUPPORTS_HIGHMEM
971	help
972	  The Loongson 2E processor implements the MIPS III instruction set
973	  with many extensions.
974
975config CPU_MIPS32_R1
976	bool "MIPS32 Release 1"
977	depends on SYS_HAS_CPU_MIPS32_R1
978	select CPU_HAS_LLSC
979	select CPU_HAS_PREFETCH
980	select CPU_SUPPORTS_32BIT_KERNEL
981	select CPU_SUPPORTS_HIGHMEM
982	help
983	  Choose this option to build a kernel for release 1 or later of the
984	  MIPS32 architecture.  Most modern embedded systems with a 32-bit
985	  MIPS processor are based on a MIPS32 processor.  If you know the
986	  specific type of processor in your system, choose those that one
987	  otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
988	  Release 2 of the MIPS32 architecture is available since several
989	  years so chances are you even have a MIPS32 Release 2 processor
990	  in which case you should choose CPU_MIPS32_R2 instead for better
991	  performance.
992
993config CPU_MIPS32_R2
994	bool "MIPS32 Release 2"
995	depends on SYS_HAS_CPU_MIPS32_R2
996	select CPU_HAS_LLSC
997	select CPU_HAS_PREFETCH
998	select CPU_SUPPORTS_32BIT_KERNEL
999	select CPU_SUPPORTS_HIGHMEM
1000	help
1001	  Choose this option to build a kernel for release 2 or later of the
1002	  MIPS32 architecture.  Most modern embedded systems with a 32-bit
1003	  MIPS processor are based on a MIPS32 processor.  If you know the
1004	  specific type of processor in your system, choose those that one
1005	  otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1006
1007config CPU_MIPS64_R1
1008	bool "MIPS64 Release 1"
1009	depends on SYS_HAS_CPU_MIPS64_R1
1010	select CPU_HAS_LLSC
1011	select CPU_HAS_PREFETCH
1012	select CPU_SUPPORTS_32BIT_KERNEL
1013	select CPU_SUPPORTS_64BIT_KERNEL
1014	select CPU_SUPPORTS_HIGHMEM
1015	help
1016	  Choose this option to build a kernel for release 1 or later of the
1017	  MIPS64 architecture.  Many modern embedded systems with a 64-bit
1018	  MIPS processor are based on a MIPS64 processor.  If you know the
1019	  specific type of processor in your system, choose those that one
1020	  otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1021	  Release 2 of the MIPS64 architecture is available since several
1022	  years so chances are you even have a MIPS64 Release 2 processor
1023	  in which case you should choose CPU_MIPS64_R2 instead for better
1024	  performance.
1025
1026config CPU_MIPS64_R2
1027	bool "MIPS64 Release 2"
1028	depends on SYS_HAS_CPU_MIPS64_R2
1029	select CPU_HAS_LLSC
1030	select CPU_HAS_PREFETCH
1031	select CPU_SUPPORTS_32BIT_KERNEL
1032	select CPU_SUPPORTS_64BIT_KERNEL
1033	select CPU_SUPPORTS_HIGHMEM
1034	help
1035	  Choose this option to build a kernel for release 2 or later of the
1036	  MIPS64 architecture.  Many modern embedded systems with a 64-bit
1037	  MIPS processor are based on a MIPS64 processor.  If you know the
1038	  specific type of processor in your system, choose those that one
1039	  otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1040
1041config CPU_R3000
1042	bool "R3000"
1043	depends on SYS_HAS_CPU_R3000
1044	select CPU_HAS_WB
1045	select CPU_SUPPORTS_32BIT_KERNEL
1046	select CPU_SUPPORTS_HIGHMEM
1047	help
1048	  Please make sure to pick the right CPU type. Linux/MIPS is not
1049	  designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1050	  *not* work on R4000 machines and vice versa.  However, since most
1051	  of the supported machines have an R4000 (or similar) CPU, R4x00
1052	  might be a safe bet.  If the resulting kernel does not work,
1053	  try to recompile with R3000.
1054
1055config CPU_TX39XX
1056	bool "R39XX"
1057	depends on SYS_HAS_CPU_TX39XX
1058	select CPU_SUPPORTS_32BIT_KERNEL
1059
1060config CPU_VR41XX
1061	bool "R41xx"
1062	depends on SYS_HAS_CPU_VR41XX
1063	select CPU_SUPPORTS_32BIT_KERNEL
1064	select CPU_SUPPORTS_64BIT_KERNEL
1065	help
1066	  The options selects support for the NEC VR4100 series of processors.
1067	  Only choose this option if you have one of these processors as a
1068	  kernel built with this option will not run on any other type of
1069	  processor or vice versa.
1070
1071config CPU_R4300
1072	bool "R4300"
1073	depends on SYS_HAS_CPU_R4300
1074	select CPU_HAS_LLSC
1075	select CPU_SUPPORTS_32BIT_KERNEL
1076	select CPU_SUPPORTS_64BIT_KERNEL
1077	help
1078	  MIPS Technologies R4300-series processors.
1079
1080config CPU_R4X00
1081	bool "R4x00"
1082	depends on SYS_HAS_CPU_R4X00
1083	select CPU_HAS_LLSC
1084	select CPU_SUPPORTS_32BIT_KERNEL
1085	select CPU_SUPPORTS_64BIT_KERNEL
1086	help
1087	  MIPS Technologies R4000-series processors other than 4300, including
1088	  the R4000, R4400, R4600, and 4700.
1089
1090config CPU_TX49XX
1091	bool "R49XX"
1092	depends on SYS_HAS_CPU_TX49XX
1093	select CPU_HAS_LLSC
1094	select CPU_HAS_PREFETCH
1095	select CPU_SUPPORTS_32BIT_KERNEL
1096	select CPU_SUPPORTS_64BIT_KERNEL
1097
1098config CPU_R5000
1099	bool "R5000"
1100	depends on SYS_HAS_CPU_R5000
1101	select CPU_HAS_LLSC
1102	select CPU_SUPPORTS_32BIT_KERNEL
1103	select CPU_SUPPORTS_64BIT_KERNEL
1104	help
1105	  MIPS Technologies R5000-series processors other than the Nevada.
1106
1107config CPU_R5432
1108	bool "R5432"
1109	depends on SYS_HAS_CPU_R5432
1110	select CPU_HAS_LLSC
1111	select CPU_SUPPORTS_32BIT_KERNEL
1112	select CPU_SUPPORTS_64BIT_KERNEL
1113
1114config CPU_R5500
1115	bool "R5500"
1116	depends on SYS_HAS_CPU_R5500
1117	select CPU_HAS_LLSC
1118	select CPU_SUPPORTS_32BIT_KERNEL
1119	select CPU_SUPPORTS_64BIT_KERNEL
1120	help
1121	  NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1122	  instruction set.
1123
1124config CPU_R6000
1125	bool "R6000"
1126	depends on EXPERIMENTAL
1127	select CPU_HAS_LLSC
1128	depends on SYS_HAS_CPU_R6000
1129	select CPU_SUPPORTS_32BIT_KERNEL
1130	help
1131	  MIPS Technologies R6000 and R6000A series processors.  Note these
1132	  processors are extremely rare and the support for them is incomplete.
1133
1134config CPU_NEVADA
1135	bool "RM52xx"
1136	depends on SYS_HAS_CPU_NEVADA
1137	select CPU_HAS_LLSC
1138	select CPU_SUPPORTS_32BIT_KERNEL
1139	select CPU_SUPPORTS_64BIT_KERNEL
1140	help
1141	  QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1142
1143config CPU_R8000
1144	bool "R8000"
1145	depends on EXPERIMENTAL
1146	depends on SYS_HAS_CPU_R8000
1147	select CPU_HAS_LLSC
1148	select CPU_HAS_PREFETCH
1149	select CPU_SUPPORTS_64BIT_KERNEL
1150	help
1151	  MIPS Technologies R8000 processors.  Note these processors are
1152	  uncommon and the support for them is incomplete.
1153
1154config CPU_R10000
1155	bool "R10000"
1156	depends on SYS_HAS_CPU_R10000
1157	select CPU_HAS_LLSC
1158	select CPU_HAS_PREFETCH
1159	select CPU_SUPPORTS_32BIT_KERNEL
1160	select CPU_SUPPORTS_64BIT_KERNEL
1161	select CPU_SUPPORTS_HIGHMEM
1162	help
1163	  MIPS Technologies R10000-series processors.
1164
1165config CPU_RM7000
1166	bool "RM7000"
1167	depends on SYS_HAS_CPU_RM7000
1168	select CPU_HAS_LLSC
1169	select CPU_HAS_PREFETCH
1170	select CPU_SUPPORTS_32BIT_KERNEL
1171	select CPU_SUPPORTS_64BIT_KERNEL
1172	select CPU_SUPPORTS_HIGHMEM
1173
1174config CPU_RM9000
1175	bool "RM9000"
1176	depends on SYS_HAS_CPU_RM9000
1177	select CPU_HAS_LLSC
1178	select CPU_HAS_PREFETCH
1179	select CPU_SUPPORTS_32BIT_KERNEL
1180	select CPU_SUPPORTS_64BIT_KERNEL
1181	select CPU_SUPPORTS_HIGHMEM
1182	select WEAK_ORDERING
1183
1184config CPU_SB1
1185	bool "SB1"
1186	depends on SYS_HAS_CPU_SB1
1187	select CPU_HAS_LLSC
1188	select CPU_SUPPORTS_32BIT_KERNEL
1189	select CPU_SUPPORTS_64BIT_KERNEL
1190	select CPU_SUPPORTS_HIGHMEM
1191	select WEAK_ORDERING
1192
1193endchoice
1194
1195config SYS_HAS_CPU_LOONGSON2
1196	bool
1197
1198config SYS_HAS_CPU_MIPS32_R1
1199	bool
1200
1201config SYS_HAS_CPU_MIPS32_R2
1202	bool
1203
1204config SYS_HAS_CPU_MIPS64_R1
1205	bool
1206
1207config SYS_HAS_CPU_MIPS64_R2
1208	bool
1209
1210config SYS_HAS_CPU_R3000
1211	bool
1212
1213config SYS_HAS_CPU_TX39XX
1214	bool
1215
1216config SYS_HAS_CPU_VR41XX
1217	bool
1218
1219config SYS_HAS_CPU_R4300
1220	bool
1221
1222config SYS_HAS_CPU_R4X00
1223	bool
1224
1225config SYS_HAS_CPU_TX49XX
1226	bool
1227
1228config SYS_HAS_CPU_R5000
1229	bool
1230
1231config SYS_HAS_CPU_R5432
1232	bool
1233
1234config SYS_HAS_CPU_R5500
1235	bool
1236
1237config SYS_HAS_CPU_R6000
1238	bool
1239
1240config SYS_HAS_CPU_NEVADA
1241	bool
1242
1243config SYS_HAS_CPU_R8000
1244	bool
1245
1246config SYS_HAS_CPU_R10000
1247	bool
1248
1249config SYS_HAS_CPU_RM7000
1250	bool
1251
1252config SYS_HAS_CPU_RM9000
1253	bool
1254
1255config SYS_HAS_CPU_SB1
1256	bool
1257
1258#
1259# CPU may reorder R->R, R->W, W->R, W->W
1260# Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1261#
1262config WEAK_ORDERING
1263	bool
1264
1265#
1266# CPU may reorder reads and writes beyond LL/SC
1267# CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1268#
1269config WEAK_REORDERING_BEYOND_LLSC
1270	bool
1271endmenu
1272
1273#
1274# These two indicate any level of the MIPS32 and MIPS64 architecture
1275#
1276config CPU_MIPS32
1277	bool
1278	default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
1279
1280config CPU_MIPS64
1281	bool
1282	default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
1283
1284#
1285# These two indicate the revision of the architecture, either Release 1 or Release 2
1286#
1287config CPU_MIPSR1
1288	bool
1289	default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1290
1291config CPU_MIPSR2
1292	bool
1293	default y if CPU_MIPS32_R2 || CPU_MIPS64_R2
1294
1295config SYS_SUPPORTS_32BIT_KERNEL
1296	bool
1297config SYS_SUPPORTS_64BIT_KERNEL
1298	bool
1299config CPU_SUPPORTS_32BIT_KERNEL
1300	bool
1301config CPU_SUPPORTS_64BIT_KERNEL
1302	bool
1303
1304#
1305# Set to y for ptrace access to watch registers.
1306#
1307config HARDWARE_WATCHPOINTS
1308       bool
1309       default y if CPU_MIPS32 || CPU_MIPS64
1310
1311menu "Kernel type"
1312
1313choice
1314
1315	prompt "Kernel code model"
1316	help
1317	  You should only select this option if you have a workload that
1318	  actually benefits from 64-bit processing or if your machine has
1319	  large memory.  You will only be presented a single option in this
1320	  menu if your system does not support both 32-bit and 64-bit kernels.
1321
1322config 32BIT
1323	bool "32-bit kernel"
1324	depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
1325	select TRAD_SIGNALS
1326	help
1327	  Select this option if you want to build a 32-bit kernel.
1328config 64BIT
1329	bool "64-bit kernel"
1330	depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
1331	help
1332	  Select this option if you want to build a 64-bit kernel.
1333
1334endchoice
1335
1336choice
1337	prompt "Kernel page size"
1338	default PAGE_SIZE_4KB
1339
1340config PAGE_SIZE_4KB
1341	bool "4kB"
1342	help
1343	 This option select the standard 4kB Linux page size.  On some
1344	 R3000-family processors this is the only available page size.  Using
1345	 4kB page size will minimize memory consumption and is therefore
1346	 recommended for low memory systems.
1347
1348config PAGE_SIZE_8KB
1349	bool "8kB"
1350	depends on EXPERIMENTAL && CPU_R8000
1351	help
1352	  Using 8kB page size will result in higher performance kernel at
1353	  the price of higher memory consumption.  This option is available
1354	  only on the R8000 processor.  Not that at the time of this writing
1355	  this option is still high experimental; there are also issues with
1356	  compatibility of user applications.
1357
1358config PAGE_SIZE_16KB
1359	bool "16kB"
1360	depends on !CPU_R3000 && !CPU_TX39XX
1361	help
1362	  Using 16kB page size will result in higher performance kernel at
1363	  the price of higher memory consumption.  This option is available on
1364	  all non-R3000 family processors.  Note that you will need a suitable
1365	  Linux distribution to support this.
1366
1367config PAGE_SIZE_64KB
1368	bool "64kB"
1369	depends on EXPERIMENTAL && !CPU_R3000 && !CPU_TX39XX
1370	help
1371	  Using 64kB page size will result in higher performance kernel at
1372	  the price of higher memory consumption.  This option is available on
1373	  all non-R3000 family processor.  Not that at the time of this
1374	  writing this option is still high experimental.
1375
1376endchoice
1377
1378config BOARD_SCACHE
1379	bool
1380
1381config IP22_CPU_SCACHE
1382	bool
1383	select BOARD_SCACHE
1384
1385#
1386# Support for a MIPS32 / MIPS64 style S-caches
1387#
1388config MIPS_CPU_SCACHE
1389	bool
1390	select BOARD_SCACHE
1391
1392config R5000_CPU_SCACHE
1393	bool
1394	select BOARD_SCACHE
1395
1396config RM7000_CPU_SCACHE
1397	bool
1398	select BOARD_SCACHE
1399
1400config SIBYTE_DMA_PAGEOPS
1401	bool "Use DMA to clear/copy pages"
1402	depends on CPU_SB1
1403	help
1404	  Instead of using the CPU to zero and copy pages, use a Data Mover
1405	  channel.  These DMA channels are otherwise unused by the standard
1406	  SiByte Linux port.  Seems to give a small performance benefit.
1407
1408config CPU_HAS_PREFETCH
1409	bool
1410
1411choice
1412	prompt "MIPS MT options"
1413
1414config MIPS_MT_DISABLED
1415	bool "Disable multithreading support."
1416	help
1417	  Use this option if your workload can't take advantage of
1418	  MIPS hardware multithreading support.  On systems that don't have
1419	  the option of an MT-enabled processor this option will be the only
1420	  option in this menu.
1421
1422config MIPS_MT_SMP
1423	bool "Use 1 TC on each available VPE for SMP"
1424	depends on SYS_SUPPORTS_MULTITHREADING
1425	select CPU_MIPSR2_IRQ_VI
1426	select CPU_MIPSR2_IRQ_EI
1427	select MIPS_MT
1428	select NR_CPUS_DEFAULT_2
1429	select SMP
1430	select SYS_SUPPORTS_SCHED_SMT if SMP
1431	select SYS_SUPPORTS_SMP
1432	select SMP_UP
1433	help
1434	  This is a kernel model which is also known a VSMP or lately
1435	  has been marketesed into SMVP.
1436
1437config MIPS_MT_SMTC
1438	bool "SMTC: Use all TCs on all VPEs for SMP"
1439	depends on CPU_MIPS32_R2
1440	#depends on CPU_MIPS64_R2		# once there is hardware ...
1441	depends on SYS_SUPPORTS_MULTITHREADING
1442	select CPU_MIPSR2_IRQ_VI
1443	select CPU_MIPSR2_IRQ_EI
1444	select MIPS_MT
1445	select NR_CPUS_DEFAULT_8
1446	select SMP
1447	select SYS_SUPPORTS_SMP
1448	select SMP_UP
1449	help
1450	  This is a kernel model which is known a SMTC or lately has been
1451	  marketesed into SMVP.
1452
1453endchoice
1454
1455config MIPS_MT
1456	bool
1457
1458config SCHED_SMT
1459	bool "SMT (multithreading) scheduler support"
1460	depends on SYS_SUPPORTS_SCHED_SMT
1461	default n
1462	help
1463	  SMT scheduler support improves the CPU scheduler's decision making
1464	  when dealing with MIPS MT enabled cores at a cost of slightly
1465	  increased overhead in some places. If unsure say N here.
1466
1467config SYS_SUPPORTS_SCHED_SMT
1468	bool
1469
1470
1471config SYS_SUPPORTS_MULTITHREADING
1472	bool
1473
1474config MIPS_MT_FPAFF
1475	bool "Dynamic FPU affinity for FP-intensive threads"
1476	default y
1477	depends on MIPS_MT_SMP || MIPS_MT_SMTC
1478
1479config MIPS_VPE_LOADER
1480	bool "VPE loader support."
1481	depends on SYS_SUPPORTS_MULTITHREADING
1482	select CPU_MIPSR2_IRQ_VI
1483	select CPU_MIPSR2_IRQ_EI
1484	select MIPS_MT
1485	help
1486	  Includes a loader for loading an elf relocatable object
1487	  onto another VPE and running it.
1488
1489config MIPS_MT_SMTC_IM_BACKSTOP
1490	bool "Use per-TC register bits as backstop for inhibited IM bits"
1491	depends on MIPS_MT_SMTC
1492	default n
1493	help
1494	  To support multiple TC microthreads acting as "CPUs" within
1495	  a VPE, VPE-wide interrupt mask bits must be specially manipulated
1496	  during interrupt handling. To support legacy drivers and interrupt
1497	  controller management code, SMTC has a "backstop" to track and
1498	  if necessary restore the interrupt mask. This has some performance
1499	  impact on interrupt service overhead.
1500
1501config MIPS_MT_SMTC_IRQAFF
1502	bool "Support IRQ affinity API"
1503	depends on MIPS_MT_SMTC
1504	default n
1505	help
1506	  Enables SMP IRQ affinity API (/proc/irq/*/smp_affinity, etc.)
1507	  for SMTC Linux kernel. Requires platform support, of which
1508	  an example can be found in the MIPS kernel i8259 and Malta
1509	  platform code.  Adds some overhead to interrupt dispatch, and
1510	  should be used only if you know what you are doing.
1511
1512config MIPS_VPE_LOADER_TOM
1513	bool "Load VPE program into memory hidden from linux"
1514	depends on MIPS_VPE_LOADER
1515	default y
1516	help
1517	  The loader can use memory that is present but has been hidden from
1518	  Linux using the kernel command line option "mem=xxMB". It's up to
1519	  you to ensure the amount you put in the option and the space your
1520	  program requires is less or equal to the amount physically present.
1521
1522# this should possibly be in drivers/char, but it is rather cpu related. Hmmm
1523config MIPS_VPE_APSP_API
1524	bool "Enable support for AP/SP API (RTLX)"
1525	depends on MIPS_VPE_LOADER
1526	help
1527
1528config MIPS_APSP_KSPD
1529	bool "Enable KSPD"
1530	depends on MIPS_VPE_APSP_API
1531	default y
1532	help
1533	  KSPD is a kernel daemon that accepts syscall requests from the SP
1534	  side, actions them and returns the results. It also handles the
1535	  "exit" syscall notifying other kernel modules the SP program is
1536	  exiting.  You probably want to say yes here.
1537
1538config MIPS_CMP
1539	bool "MIPS CMP framework support"
1540	depends on SYS_SUPPORTS_MIPS_CMP
1541	select SYNC_R4K if BROKEN
1542	select SYS_SUPPORTS_SMP
1543	select SYS_SUPPORTS_SCHED_SMT if SMP
1544	select WEAK_ORDERING
1545	default n
1546	help
1547	  This is a placeholder option for the GCMP work. It will need to
1548	  be handled differently...
1549
1550config SB1_PASS_1_WORKAROUNDS
1551	bool
1552	depends on CPU_SB1_PASS_1
1553	default y
1554
1555config SB1_PASS_2_WORKAROUNDS
1556	bool
1557	depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
1558	default y
1559
1560config SB1_PASS_2_1_WORKAROUNDS
1561	bool
1562	depends on CPU_SB1 && CPU_SB1_PASS_2
1563	default y
1564
1565config 64BIT_PHYS_ADDR
1566	bool
1567
1568config CPU_HAS_LLSC
1569	bool
1570
1571config CPU_HAS_SMARTMIPS
1572	depends on SYS_SUPPORTS_SMARTMIPS
1573	bool "Support for the SmartMIPS ASE"
1574	help
1575	  SmartMIPS is a extension of the MIPS32 architecture aimed at
1576	  increased security at both hardware and software level for
1577	  smartcards.  Enabling this option will allow proper use of the
1578	  SmartMIPS instructions by Linux applications.  However a kernel with
1579	  this option will not work on a MIPS core without SmartMIPS core.  If
1580	  you don't know you probably don't have SmartMIPS and should say N
1581	  here.
1582
1583config CPU_HAS_WB
1584	bool
1585
1586#
1587# Vectored interrupt mode is an R2 feature
1588#
1589config CPU_MIPSR2_IRQ_VI
1590	bool
1591
1592#
1593# Extended interrupt mode is an R2 feature
1594#
1595config CPU_MIPSR2_IRQ_EI
1596	bool
1597
1598config CPU_HAS_SYNC
1599	bool
1600	depends on !CPU_R3000
1601	default y
1602
1603config GENERIC_CLOCKEVENTS_BROADCAST
1604	bool
1605
1606#
1607# CPU non-features
1608#
1609config CPU_DADDI_WORKAROUNDS
1610	bool
1611
1612config CPU_R4000_WORKAROUNDS
1613	bool
1614	select CPU_R4400_WORKAROUNDS
1615
1616config CPU_R4400_WORKAROUNDS
1617	bool
1618
1619#
1620# Use the generic interrupt handling code in kernel/irq/:
1621#
1622config GENERIC_HARDIRQS
1623	bool
1624	default y
1625
1626config GENERIC_IRQ_PROBE
1627	bool
1628	default y
1629
1630config IRQ_PER_CPU
1631	bool
1632
1633#
1634# - Highmem only makes sense for the 32-bit kernel.
1635# - The current highmem code will only work properly on physically indexed
1636#   caches such as R3000, SB1, R7000 or those that look like they're virtually
1637#   indexed such as R4000/R4400 SC and MC versions or R10000.  So for the
1638#   moment we protect the user and offer the highmem option only on machines
1639#   where it's known to be safe.  This will not offer highmem on a few systems
1640#   such as MIPS32 and MIPS64 CPUs which may have virtual and physically
1641#   indexed CPUs but we're playing safe.
1642# - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
1643#   know they might have memory configurations that could make use of highmem
1644#   support.
1645#
1646config HIGHMEM
1647	bool "High Memory Support"
1648	depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM
1649
1650config CPU_SUPPORTS_HIGHMEM
1651	bool
1652
1653config SYS_SUPPORTS_HIGHMEM
1654	bool
1655
1656config SYS_SUPPORTS_SMARTMIPS
1657	bool
1658
1659config ARCH_FLATMEM_ENABLE
1660	def_bool y
1661	depends on !NUMA
1662
1663config ARCH_DISCONTIGMEM_ENABLE
1664	bool
1665	default y if SGI_IP27
1666	help
1667	  Say Y to support efficient handling of discontiguous physical memory,
1668	  for architectures which are either NUMA (Non-Uniform Memory Access)
1669	  or have huge holes in the physical address space for other reasons.
1670	  See <file:Documentation/vm/numa> for more.
1671
1672config ARCH_POPULATES_NODE_MAP
1673	def_bool y
1674
1675config ARCH_SPARSEMEM_ENABLE
1676	bool
1677	select SPARSEMEM_STATIC
1678
1679config NUMA
1680	bool "NUMA Support"
1681	depends on SYS_SUPPORTS_NUMA
1682	help
1683	  Say Y to compile the kernel to support NUMA (Non-Uniform Memory
1684	  Access).  This option improves performance on systems with more
1685	  than two nodes; on two node systems it is generally better to
1686	  leave it disabled; on single node systems disable this option
1687	  disabled.
1688
1689config SYS_SUPPORTS_NUMA
1690	bool
1691
1692config NODES_SHIFT
1693	int
1694	default "6"
1695	depends on NEED_MULTIPLE_NODES
1696
1697source "mm/Kconfig"
1698
1699config SMP
1700	bool "Multi-Processing support"
1701	depends on SYS_SUPPORTS_SMP
1702	select IRQ_PER_CPU
1703	select USE_GENERIC_SMP_HELPERS
1704	help
1705	  This enables support for systems with more than one CPU. If you have
1706	  a system with only one CPU, like most personal computers, say N. If
1707	  you have a system with more than one CPU, say Y.
1708
1709	  If you say N here, the kernel will run on single and multiprocessor
1710	  machines, but will use only one CPU of a multiprocessor machine. If
1711	  you say Y here, the kernel will run on many, but not all,
1712	  singleprocessor machines. On a singleprocessor machine, the kernel
1713	  will run faster if you say N here.
1714
1715	  People using multiprocessor machines who say Y here should also say
1716	  Y to "Enhanced Real Time Clock Support", below.
1717
1718	  See also the SMP-HOWTO available at
1719	  <http://www.tldp.org/docs.html#howto>.
1720
1721	  If you don't know what to do here, say N.
1722
1723config SMP_UP
1724	bool
1725
1726config SYS_SUPPORTS_MIPS_CMP
1727	bool
1728
1729config SYS_SUPPORTS_SMP
1730	bool
1731
1732config NR_CPUS_DEFAULT_1
1733	bool
1734
1735config NR_CPUS_DEFAULT_2
1736	bool
1737
1738config NR_CPUS_DEFAULT_4
1739	bool
1740
1741config NR_CPUS_DEFAULT_8
1742	bool
1743
1744config NR_CPUS_DEFAULT_16
1745	bool
1746
1747config NR_CPUS_DEFAULT_32
1748	bool
1749
1750config NR_CPUS_DEFAULT_64
1751	bool
1752
1753config NR_CPUS
1754	int "Maximum number of CPUs (2-64)"
1755	range 1 64 if NR_CPUS_DEFAULT_1
1756	depends on SMP
1757	default "1" if NR_CPUS_DEFAULT_1
1758	default "2" if NR_CPUS_DEFAULT_2
1759	default "4" if NR_CPUS_DEFAULT_4
1760	default "8" if NR_CPUS_DEFAULT_8
1761	default "16" if NR_CPUS_DEFAULT_16
1762	default "32" if NR_CPUS_DEFAULT_32
1763	default "64" if NR_CPUS_DEFAULT_64
1764	help
1765	  This allows you to specify the maximum number of CPUs which this
1766	  kernel will support.  The maximum supported value is 32 for 32-bit
1767	  kernel and 64 for 64-bit kernels; the minimum value which makes
1768	  sense is 1 for Qemu (useful only for kernel debugging purposes)
1769	  and 2 for all others.
1770
1771	  This is purely to save memory - each supported CPU adds
1772	  approximately eight kilobytes to the kernel image.  For best
1773	  performance should round up your number of processors to the next
1774	  power of two.
1775
1776source "kernel/time/Kconfig"
1777
1778#
1779# Timer Interrupt Frequency Configuration
1780#
1781
1782choice
1783	prompt "Timer frequency"
1784	default HZ_250
1785	help
1786	 Allows the configuration of the timer frequency.
1787
1788	config HZ_48
1789		bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
1790
1791	config HZ_100
1792		bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
1793
1794	config HZ_128
1795		bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
1796
1797	config HZ_250
1798		bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
1799
1800	config HZ_256
1801		bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
1802
1803	config HZ_1000
1804		bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
1805
1806	config HZ_1024
1807		bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
1808
1809endchoice
1810
1811config SYS_SUPPORTS_48HZ
1812	bool
1813
1814config SYS_SUPPORTS_100HZ
1815	bool
1816
1817config SYS_SUPPORTS_128HZ
1818	bool
1819
1820config SYS_SUPPORTS_250HZ
1821	bool
1822
1823config SYS_SUPPORTS_256HZ
1824	bool
1825
1826config SYS_SUPPORTS_1000HZ
1827	bool
1828
1829config SYS_SUPPORTS_1024HZ
1830	bool
1831
1832config SYS_SUPPORTS_ARBIT_HZ
1833	bool
1834	default y if !SYS_SUPPORTS_48HZ && !SYS_SUPPORTS_100HZ && \
1835		     !SYS_SUPPORTS_128HZ && !SYS_SUPPORTS_250HZ && \
1836		     !SYS_SUPPORTS_256HZ && !SYS_SUPPORTS_1000HZ && \
1837		     !SYS_SUPPORTS_1024HZ
1838
1839config HZ
1840	int
1841	default 48 if HZ_48
1842	default 100 if HZ_100
1843	default 128 if HZ_128
1844	default 250 if HZ_250
1845	default 256 if HZ_256
1846	default 1000 if HZ_1000
1847	default 1024 if HZ_1024
1848
1849source "kernel/Kconfig.preempt"
1850
1851config MIPS_INSANE_LARGE
1852	bool "Support for large 64-bit configurations"
1853	depends on CPU_R10000 && 64BIT
1854	help
1855	  MIPS R10000 does support a 44 bit / 16TB address space as opposed to
1856	  previous 64-bit processors which only supported 40 bit / 1TB. If you
1857	  need processes of more than 1TB virtual address space, say Y here.
1858	  This will result in additional memory usage, so it is not
1859	  recommended for normal users.
1860
1861config KEXEC
1862	bool "Kexec system call (EXPERIMENTAL)"
1863	depends on EXPERIMENTAL
1864	help
1865	  kexec is a system call that implements the ability to shutdown your
1866	  current kernel, and to start another kernel.  It is like a reboot
1867	  but it is independent of the system firmware.   And like a reboot
1868	  you can start any kernel with it, not just Linux.
1869
1870	  The name comes from the similarity to the exec system call.
1871
1872	  It is an ongoing process to be certain the hardware in a machine
1873	  is properly shutdown, so do not be surprised if this code does not
1874	  initially work for you.  It may help to enable device hotplugging
1875	  support.  As of this writing the exact hardware interface is
1876	  strongly in flux, so no good recommendation can be made.
1877
1878config SECCOMP
1879	bool "Enable seccomp to safely compute untrusted bytecode"
1880	depends on PROC_FS
1881	default y
1882	help
1883	  This kernel feature is useful for number crunching applications
1884	  that may need to compute untrusted bytecode during their
1885	  execution. By using pipes or other transports made available to
1886	  the process as file descriptors supporting the read/write
1887	  syscalls, it's possible to isolate those applications in
1888	  their own address space using seccomp. Once seccomp is
1889	  enabled via /proc/<pid>/seccomp, it cannot be disabled
1890	  and the task is only allowed to execute a few safe syscalls
1891	  defined by each seccomp mode.
1892
1893	  If unsure, say Y. Only embedded should say N here.
1894
1895endmenu
1896
1897config RWSEM_GENERIC_SPINLOCK
1898	bool
1899	default y
1900
1901config LOCKDEP_SUPPORT
1902	bool
1903	default y
1904
1905config STACKTRACE_SUPPORT
1906	bool
1907	default y
1908
1909source "init/Kconfig"
1910
1911config PROBE_INITRD_HEADER
1912	bool "Probe initrd header created by addinitrd"
1913	depends on BLK_DEV_INITRD
1914	help
1915	  Probe initrd header at the last page of kernel image.
1916	  Say Y here if you are using arch/mips/boot/addinitrd.c to
1917	  add initrd or initramfs image to the kernel image.
1918	  Otherwise, say N.
1919
1920source "kernel/Kconfig.freezer"
1921
1922menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
1923
1924config HW_HAS_EISA
1925	bool
1926config HW_HAS_PCI
1927	bool
1928
1929config PCI
1930	bool "Support for PCI controller"
1931	depends on HW_HAS_PCI
1932	select PCI_DOMAINS
1933	help
1934	  Find out whether you have a PCI motherboard. PCI is the name of a
1935	  bus system, i.e. the way the CPU talks to the other stuff inside
1936	  your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
1937	  say Y, otherwise N.
1938
1939config PCI_DOMAINS
1940	bool
1941
1942source "drivers/pci/Kconfig"
1943
1944#
1945# ISA support is now enabled via select.  Too many systems still have the one
1946# or other ISA chip on the board that users don't know about so don't expect
1947# users to choose the right thing ...
1948#
1949config ISA
1950	bool
1951
1952config EISA
1953	bool "EISA support"
1954	depends on HW_HAS_EISA
1955	select ISA
1956	select GENERIC_ISA_DMA
1957	---help---
1958	  The Extended Industry Standard Architecture (EISA) bus was
1959	  developed as an open alternative to the IBM MicroChannel bus.
1960
1961	  The EISA bus provided some of the features of the IBM MicroChannel
1962	  bus while maintaining backward compatibility with cards made for
1963	  the older ISA bus.  The EISA bus saw limited use between 1988 and
1964	  1995 when it was made obsolete by the PCI bus.
1965
1966	  Say Y here if you are building a kernel for an EISA-based machine.
1967
1968	  Otherwise, say N.
1969
1970source "drivers/eisa/Kconfig"
1971
1972config TC
1973	bool "TURBOchannel support"
1974	depends on MACH_DECSTATION
1975	help
1976	  TurboChannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
1977	  processors.  Documentation on writing device drivers for TurboChannel
1978	  is available at:
1979	  <http://www.cs.arizona.edu/computer.help/policy/DIGITAL_unix/AA-PS3HD-TET1_html/TITLE.html>.
1980
1981#config ACCESSBUS
1982#	bool "Access.Bus support"
1983#	depends on TC
1984
1985config MMU
1986	bool
1987	default y
1988
1989config I8253
1990	bool
1991
1992config ZONE_DMA32
1993	bool
1994
1995source "drivers/pcmcia/Kconfig"
1996
1997source "drivers/pci/hotplug/Kconfig"
1998
1999endmenu
2000
2001menu "Executable file formats"
2002
2003source "fs/Kconfig.binfmt"
2004
2005config TRAD_SIGNALS
2006	bool
2007
2008config MIPS32_COMPAT
2009	bool "Kernel support for Linux/MIPS 32-bit binary compatibility"
2010	depends on 64BIT
2011	help
2012	  Select this option if you want Linux/MIPS 32-bit binary
2013	  compatibility. Since all software available for Linux/MIPS is
2014	  currently 32-bit you should say Y here.
2015
2016config COMPAT
2017	bool
2018	depends on MIPS32_COMPAT
2019	default y
2020
2021config SYSVIPC_COMPAT
2022	bool
2023	depends on COMPAT && SYSVIPC
2024	default y
2025
2026config MIPS32_O32
2027	bool "Kernel support for o32 binaries"
2028	depends on MIPS32_COMPAT
2029	help
2030	  Select this option if you want to run o32 binaries.  These are pure
2031	  32-bit binaries as used by the 32-bit Linux/MIPS port.  Most of
2032	  existing binaries are in this format.
2033
2034	  If unsure, say Y.
2035
2036config MIPS32_N32
2037	bool "Kernel support for n32 binaries"
2038	depends on MIPS32_COMPAT
2039	help
2040	  Select this option if you want to run n32 binaries.  These are
2041	  64-bit binaries using 32-bit quantities for addressing and certain
2042	  data that would normally be 64-bit.  They are used in special
2043	  cases.
2044
2045	  If unsure, say N.
2046
2047config BINFMT_ELF32
2048	bool
2049	default y if MIPS32_O32 || MIPS32_N32
2050
2051endmenu
2052
2053menu "Power management options"
2054
2055config ARCH_SUSPEND_POSSIBLE
2056	def_bool y
2057	depends on !SMP
2058
2059source "kernel/power/Kconfig"
2060
2061endmenu
2062
2063source "net/Kconfig"
2064
2065source "drivers/Kconfig"
2066
2067source "fs/Kconfig"
2068
2069source "arch/mips/Kconfig.debug"
2070
2071source "security/Kconfig"
2072
2073source "crypto/Kconfig"
2074
2075source "lib/Kconfig"
2076