ide: introduce HAVE_IDE
[deliverable/linux.git] / arch / blackfin / Kconfig
1 #
2 # For a description of the syntax of this configuration file,
3 # see Documentation/kbuild/kconfig-language.txt.
4 #
5
6 mainmenu "Blackfin Kernel Configuration"
7
8 config MMU
9 bool
10 default n
11
12 config FPU
13 bool
14 default n
15
16 config RWSEM_GENERIC_SPINLOCK
17 bool
18 default y
19
20 config RWSEM_XCHGADD_ALGORITHM
21 bool
22 default n
23
24 config BLACKFIN
25 bool
26 default y
27 select HAVE_IDE
28 select HAVE_OPROFILE
29
30 config ZONE_DMA
31 bool
32 default y
33
34 config SEMAPHORE_SLEEPERS
35 bool
36 default y
37
38 config GENERIC_FIND_NEXT_BIT
39 bool
40 default y
41
42 config GENERIC_HWEIGHT
43 bool
44 default y
45
46 config GENERIC_HARDIRQS
47 bool
48 default y
49
50 config GENERIC_IRQ_PROBE
51 bool
52 default y
53
54 config GENERIC_TIME
55 bool
56 default n
57
58 config GENERIC_GPIO
59 bool
60 default y
61
62 config FORCE_MAX_ZONEORDER
63 int
64 default "14"
65
66 config GENERIC_CALIBRATE_DELAY
67 bool
68 default y
69
70 config HARDWARE_PM
71 def_bool y
72 depends on OPROFILE
73
74 source "init/Kconfig"
75 source "kernel/Kconfig.preempt"
76
77 menu "Blackfin Processor Options"
78
79 comment "Processor and Board Settings"
80
81 choice
82 prompt "CPU"
83 default BF533
84
85 config BF522
86 bool "BF522"
87 help
88 BF522 Processor Support.
89
90 config BF523
91 bool "BF523"
92 help
93 BF523 Processor Support.
94
95 config BF524
96 bool "BF524"
97 help
98 BF524 Processor Support.
99
100 config BF525
101 bool "BF525"
102 help
103 BF525 Processor Support.
104
105 config BF526
106 bool "BF526"
107 help
108 BF526 Processor Support.
109
110 config BF527
111 bool "BF527"
112 help
113 BF527 Processor Support.
114
115 config BF531
116 bool "BF531"
117 help
118 BF531 Processor Support.
119
120 config BF532
121 bool "BF532"
122 help
123 BF532 Processor Support.
124
125 config BF533
126 bool "BF533"
127 help
128 BF533 Processor Support.
129
130 config BF534
131 bool "BF534"
132 help
133 BF534 Processor Support.
134
135 config BF536
136 bool "BF536"
137 help
138 BF536 Processor Support.
139
140 config BF537
141 bool "BF537"
142 help
143 BF537 Processor Support.
144
145 config BF542
146 bool "BF542"
147 help
148 BF542 Processor Support.
149
150 config BF544
151 bool "BF544"
152 help
153 BF544 Processor Support.
154
155 config BF547
156 bool "BF547"
157 help
158 BF547 Processor Support.
159
160 config BF548
161 bool "BF548"
162 help
163 BF548 Processor Support.
164
165 config BF549
166 bool "BF549"
167 help
168 BF549 Processor Support.
169
170 config BF561
171 bool "BF561"
172 help
173 Not Supported Yet - Work in progress - BF561 Processor Support.
174
175 endchoice
176
177 choice
178 prompt "Silicon Rev"
179 default BF_REV_0_1 if BF527
180 default BF_REV_0_2 if BF537
181 default BF_REV_0_3 if BF533
182 default BF_REV_0_0 if BF549
183
184 config BF_REV_0_0
185 bool "0.0"
186 depends on (BF52x || BF54x)
187
188 config BF_REV_0_1
189 bool "0.1"
190 depends on (BF52x || BF54x)
191
192 config BF_REV_0_2
193 bool "0.2"
194 depends on (BF537 || BF536 || BF534)
195
196 config BF_REV_0_3
197 bool "0.3"
198 depends on (BF561 || BF537 || BF536 || BF534 || BF533 || BF532 || BF531)
199
200 config BF_REV_0_4
201 bool "0.4"
202 depends on (BF561 || BF533 || BF532 || BF531)
203
204 config BF_REV_0_5
205 bool "0.5"
206 depends on (BF561 || BF533 || BF532 || BF531)
207
208 config BF_REV_ANY
209 bool "any"
210
211 config BF_REV_NONE
212 bool "none"
213
214 endchoice
215
216 config BF52x
217 bool
218 depends on (BF522 || BF523 || BF524 || BF525 || BF526 || BF527)
219 default y
220
221 config BF53x
222 bool
223 depends on (BF531 || BF532 || BF533 || BF534 || BF536 || BF537)
224 default y
225
226 config BF54x
227 bool
228 depends on (BF542 || BF544 || BF547 || BF548 || BF549)
229 default y
230
231 config BFIN_DUAL_CORE
232 bool
233 depends on (BF561)
234 default y
235
236 config BFIN_SINGLE_CORE
237 bool
238 depends on !BFIN_DUAL_CORE
239 default y
240
241 config MEM_GENERIC_BOARD
242 bool
243 depends on GENERIC_BOARD
244 default y
245
246 config MEM_MT48LC64M4A2FB_7E
247 bool
248 depends on (BFIN533_STAMP)
249 default y
250
251 config MEM_MT48LC16M16A2TG_75
252 bool
253 depends on (BFIN533_EZKIT || BFIN561_EZKIT \
254 || BFIN533_BLUETECHNIX_CM || BFIN537_BLUETECHNIX_CM \
255 || H8606_HVSISTEMAS)
256 default y
257
258 config MEM_MT48LC32M8A2_75
259 bool
260 depends on (BFIN537_STAMP || PNAV10)
261 default y
262
263 config MEM_MT48LC8M32B2B5_7
264 bool
265 depends on (BFIN561_BLUETECHNIX_CM)
266 default y
267
268 config MEM_MT48LC32M16A2TG_75
269 bool
270 depends on (BFIN527_EZKIT)
271 default y
272
273 source "arch/blackfin/mach-bf527/Kconfig"
274 source "arch/blackfin/mach-bf533/Kconfig"
275 source "arch/blackfin/mach-bf561/Kconfig"
276 source "arch/blackfin/mach-bf537/Kconfig"
277 source "arch/blackfin/mach-bf548/Kconfig"
278
279 menu "Board customizations"
280
281 config CMDLINE_BOOL
282 bool "Default bootloader kernel arguments"
283
284 config CMDLINE
285 string "Initial kernel command string"
286 depends on CMDLINE_BOOL
287 default "console=ttyBF0,57600"
288 help
289 If you don't have a boot loader capable of passing a command line string
290 to the kernel, you may specify one here. As a minimum, you should specify
291 the memory size and the root device (e.g., mem=8M, root=/dev/nfs).
292
293 comment "Clock/PLL Setup"
294
295 config CLKIN_HZ
296 int "Crystal Frequency in Hz"
297 default "11059200" if BFIN533_STAMP
298 default "27000000" if BFIN533_EZKIT
299 default "25000000" if (BFIN537_STAMP || BFIN527_EZKIT || H8606_HVSISTEMAS)
300 default "30000000" if BFIN561_EZKIT
301 default "24576000" if PNAV10
302 help
303 The frequency of CLKIN crystal oscillator on the board in Hz.
304
305 config BFIN_KERNEL_CLOCK
306 bool "Re-program Clocks while Kernel boots?"
307 default n
308 help
309 This option decides if kernel clocks are re-programed from the
310 bootloader settings. If the clocks are not set, the SDRAM settings
311 are also not changed, and the Bootloader does 100% of the hardware
312 configuration.
313
314 config PLL_BYPASS
315 bool "Bypass PLL"
316 depends on BFIN_KERNEL_CLOCK
317 default n
318
319 config CLKIN_HALF
320 bool "Half Clock In"
321 depends on BFIN_KERNEL_CLOCK && (! PLL_BYPASS)
322 default n
323 help
324 If this is set the clock will be divided by 2, before it goes to the PLL.
325
326 config VCO_MULT
327 int "VCO Multiplier"
328 depends on BFIN_KERNEL_CLOCK && (! PLL_BYPASS)
329 range 1 64
330 default "22" if BFIN533_EZKIT
331 default "45" if BFIN533_STAMP
332 default "20" if (BFIN537_STAMP || BFIN527_EZKIT || BFIN548_EZKIT)
333 default "22" if BFIN533_BLUETECHNIX_CM
334 default "20" if BFIN537_BLUETECHNIX_CM
335 default "20" if BFIN561_BLUETECHNIX_CM
336 default "20" if BFIN561_EZKIT
337 default "16" if H8606_HVSISTEMAS
338 help
339 This controls the frequency of the on-chip PLL. This can be between 1 and 64.
340 PLL Frequency = (Crystal Frequency) * (this setting)
341
342 choice
343 prompt "Core Clock Divider"
344 depends on BFIN_KERNEL_CLOCK
345 default CCLK_DIV_1
346 help
347 This sets the frequency of the core. It can be 1, 2, 4 or 8
348 Core Frequency = (PLL frequency) / (this setting)
349
350 config CCLK_DIV_1
351 bool "1"
352
353 config CCLK_DIV_2
354 bool "2"
355
356 config CCLK_DIV_4
357 bool "4"
358
359 config CCLK_DIV_8
360 bool "8"
361 endchoice
362
363 config SCLK_DIV
364 int "System Clock Divider"
365 depends on BFIN_KERNEL_CLOCK
366 range 1 15
367 default 5 if BFIN533_EZKIT
368 default 5 if BFIN533_STAMP
369 default 4 if (BFIN537_STAMP || BFIN527_EZKIT || BFIN548_EZKIT)
370 default 5 if BFIN533_BLUETECHNIX_CM
371 default 4 if BFIN537_BLUETECHNIX_CM
372 default 4 if BFIN561_BLUETECHNIX_CM
373 default 5 if BFIN561_EZKIT
374 default 3 if H8606_HVSISTEMAS
375 help
376 This sets the frequency of the system clock (including SDRAM or DDR).
377 This can be between 1 and 15
378 System Clock = (PLL frequency) / (this setting)
379
380 #
381 # Max & Min Speeds for various Chips
382 #
383 config MAX_VCO_HZ
384 int
385 default 600000000 if BF522
386 default 400000000 if BF523
387 default 400000000 if BF524
388 default 600000000 if BF525
389 default 400000000 if BF526
390 default 600000000 if BF527
391 default 400000000 if BF531
392 default 400000000 if BF532
393 default 750000000 if BF533
394 default 500000000 if BF534
395 default 400000000 if BF536
396 default 600000000 if BF537
397 default 533333333 if BF538
398 default 533333333 if BF539
399 default 600000000 if BF542
400 default 533333333 if BF544
401 default 600000000 if BF547
402 default 600000000 if BF548
403 default 533333333 if BF549
404 default 600000000 if BF561
405
406 config MIN_VCO_HZ
407 int
408 default 50000000
409
410 config MAX_SCLK_HZ
411 int
412 default 133333333
413
414 config MIN_SCLK_HZ
415 int
416 default 27000000
417
418 comment "Kernel Timer/Scheduler"
419
420 source kernel/Kconfig.hz
421
422 comment "Memory Setup"
423
424 config MEM_SIZE
425 int "SDRAM Memory Size in MBytes"
426 default 32 if BFIN533_EZKIT
427 default 64 if BFIN527_EZKIT
428 default 64 if BFIN537_STAMP
429 default 64 if BFIN548_EZKIT
430 default 64 if BFIN561_EZKIT
431 default 128 if BFIN533_STAMP
432 default 64 if PNAV10
433 default 32 if H8606_HVSISTEMAS
434
435 config MEM_ADD_WIDTH
436 int "SDRAM Memory Address Width"
437 depends on (!BF54x)
438 default 9 if BFIN533_EZKIT
439 default 9 if BFIN561_EZKIT
440 default 9 if H8606_HVSISTEMAS
441 default 10 if BFIN527_EZKIT
442 default 10 if BFIN537_STAMP
443 default 11 if BFIN533_STAMP
444 default 10 if PNAV10
445
446
447 choice
448 prompt "DDR SDRAM Chip Type"
449 depends on BFIN548_EZKIT
450 default MEM_MT46V32M16_5B
451
452 config MEM_MT46V32M16_6T
453 bool "MT46V32M16_6T"
454
455 config MEM_MT46V32M16_5B
456 bool "MT46V32M16_5B"
457 endchoice
458
459 config ENET_FLASH_PIN
460 int "PF port/pin used for flash and ethernet sharing"
461 depends on (BFIN533_STAMP)
462 default 0
463 help
464 PF port/pin used for flash and ethernet sharing to allow other PF
465 pins to be used on other platforms without having to touch common
466 code.
467 For example: PF0 --> 0,PF1 --> 1,PF2 --> 2, etc.
468
469 config BOOT_LOAD
470 hex "Kernel load address for booting"
471 default "0x1000"
472 range 0x1000 0x20000000
473 help
474 This option allows you to set the load address of the kernel.
475 This can be useful if you are on a board which has a small amount
476 of memory or you wish to reserve some memory at the beginning of
477 the address space.
478
479 Note that you need to keep this value above 4k (0x1000) as this
480 memory region is used to capture NULL pointer references as well
481 as some core kernel functions.
482
483 choice
484 prompt "Blackfin Exception Scratch Register"
485 default BFIN_SCRATCH_REG_RETN
486 help
487 Select the resource to reserve for the Exception handler:
488 - RETN: Non-Maskable Interrupt (NMI)
489 - RETE: Exception Return (JTAG/ICE)
490 - CYCLES: Performance counter
491
492 If you are unsure, please select "RETN".
493
494 config BFIN_SCRATCH_REG_RETN
495 bool "RETN"
496 help
497 Use the RETN register in the Blackfin exception handler
498 as a stack scratch register. This means you cannot
499 safely use NMI on the Blackfin while running Linux, but
500 you can debug the system with a JTAG ICE and use the
501 CYCLES performance registers.
502
503 If you are unsure, please select "RETN".
504
505 config BFIN_SCRATCH_REG_RETE
506 bool "RETE"
507 help
508 Use the RETE register in the Blackfin exception handler
509 as a stack scratch register. This means you cannot
510 safely use a JTAG ICE while debugging a Blackfin board,
511 but you can safely use the CYCLES performance registers
512 and the NMI.
513
514 If you are unsure, please select "RETN".
515
516 config BFIN_SCRATCH_REG_CYCLES
517 bool "CYCLES"
518 help
519 Use the CYCLES register in the Blackfin exception handler
520 as a stack scratch register. This means you cannot
521 safely use the CYCLES performance registers on a Blackfin
522 board at anytime, but you can debug the system with a JTAG
523 ICE and use the NMI.
524
525 If you are unsure, please select "RETN".
526
527 endchoice
528
529 endmenu
530
531
532 menu "Blackfin Kernel Optimizations"
533
534 comment "Memory Optimizations"
535
536 config I_ENTRY_L1
537 bool "Locate interrupt entry code in L1 Memory"
538 default y
539 help
540 If enabled, interrupt entry code (STORE/RESTORE CONTEXT) is linked
541 into L1 instruction memory. (less latency)
542
543 config EXCPT_IRQ_SYSC_L1
544 bool "Locate entire ASM lowlevel exception / interrupt - Syscall and CPLB handler code in L1 Memory"
545 default y
546 help
547 If enabled, the entire ASM lowlevel exception and interrupt entry code
548 (STORE/RESTORE CONTEXT) is linked into L1 instruction memory.
549 (less latency)
550
551 config DO_IRQ_L1
552 bool "Locate frequently called do_irq dispatcher function in L1 Memory"
553 default y
554 help
555 If enabled, the frequently called do_irq dispatcher function is linked
556 into L1 instruction memory. (less latency)
557
558 config CORE_TIMER_IRQ_L1
559 bool "Locate frequently called timer_interrupt() function in L1 Memory"
560 default y
561 help
562 If enabled, the frequently called timer_interrupt() function is linked
563 into L1 instruction memory. (less latency)
564
565 config IDLE_L1
566 bool "Locate frequently idle function in L1 Memory"
567 default y
568 help
569 If enabled, the frequently called idle function is linked
570 into L1 instruction memory. (less latency)
571
572 config SCHEDULE_L1
573 bool "Locate kernel schedule function in L1 Memory"
574 default y
575 help
576 If enabled, the frequently called kernel schedule is linked
577 into L1 instruction memory. (less latency)
578
579 config ARITHMETIC_OPS_L1
580 bool "Locate kernel owned arithmetic functions in L1 Memory"
581 default y
582 help
583 If enabled, arithmetic functions are linked
584 into L1 instruction memory. (less latency)
585
586 config ACCESS_OK_L1
587 bool "Locate access_ok function in L1 Memory"
588 default y
589 help
590 If enabled, the access_ok function is linked
591 into L1 instruction memory. (less latency)
592
593 config MEMSET_L1
594 bool "Locate memset function in L1 Memory"
595 default y
596 help
597 If enabled, the memset function is linked
598 into L1 instruction memory. (less latency)
599
600 config MEMCPY_L1
601 bool "Locate memcpy function in L1 Memory"
602 default y
603 help
604 If enabled, the memcpy function is linked
605 into L1 instruction memory. (less latency)
606
607 config SYS_BFIN_SPINLOCK_L1
608 bool "Locate sys_bfin_spinlock function in L1 Memory"
609 default y
610 help
611 If enabled, sys_bfin_spinlock function is linked
612 into L1 instruction memory. (less latency)
613
614 config IP_CHECKSUM_L1
615 bool "Locate IP Checksum function in L1 Memory"
616 default n
617 help
618 If enabled, the IP Checksum function is linked
619 into L1 instruction memory. (less latency)
620
621 config CACHELINE_ALIGNED_L1
622 bool "Locate cacheline_aligned data to L1 Data Memory"
623 default y if !BF54x
624 default n if BF54x
625 depends on !BF531
626 help
627 If enabled, cacheline_anligned data is linked
628 into L1 data memory. (less latency)
629
630 config SYSCALL_TAB_L1
631 bool "Locate Syscall Table L1 Data Memory"
632 default n
633 depends on !BF531
634 help
635 If enabled, the Syscall LUT is linked
636 into L1 data memory. (less latency)
637
638 config CPLB_SWITCH_TAB_L1
639 bool "Locate CPLB Switch Tables L1 Data Memory"
640 default n
641 depends on !BF531
642 help
643 If enabled, the CPLB Switch Tables are linked
644 into L1 data memory. (less latency)
645
646 endmenu
647
648
649 choice
650 prompt "Kernel executes from"
651 help
652 Choose the memory type that the kernel will be running in.
653
654 config RAMKERNEL
655 bool "RAM"
656 help
657 The kernel will be resident in RAM when running.
658
659 config ROMKERNEL
660 bool "ROM"
661 help
662 The kernel will be resident in FLASH/ROM when running.
663
664 endchoice
665
666 source "mm/Kconfig"
667
668 config LARGE_ALLOCS
669 bool "Allow allocating large blocks (> 1MB) of memory"
670 help
671 Allow the slab memory allocator to keep chains for very large
672 memory sizes - upto 32MB. You may need this if your system has
673 a lot of RAM, and you need to able to allocate very large
674 contiguous chunks. If unsure, say N.
675
676 config BFIN_GPTIMERS
677 tristate "Enable Blackfin General Purpose Timers API"
678 default n
679 help
680 Enable support for the General Purpose Timers API. If you
681 are unsure, say N.
682
683 To compile this driver as a module, choose M here: the module
684 will be called gptimers.ko.
685
686 config BFIN_DMA_5XX
687 bool "Enable DMA Support"
688 depends on (BF52x || BF53x || BF561 || BF54x)
689 default y
690 help
691 DMA driver for BF5xx.
692
693 choice
694 prompt "Uncached SDRAM region"
695 default DMA_UNCACHED_1M
696 depends on BFIN_DMA_5XX
697 config DMA_UNCACHED_2M
698 bool "Enable 2M DMA region"
699 config DMA_UNCACHED_1M
700 bool "Enable 1M DMA region"
701 config DMA_UNCACHED_NONE
702 bool "Disable DMA region"
703 endchoice
704
705
706 comment "Cache Support"
707 config BFIN_ICACHE
708 bool "Enable ICACHE"
709 config BFIN_DCACHE
710 bool "Enable DCACHE"
711 config BFIN_DCACHE_BANKA
712 bool "Enable only 16k BankA DCACHE - BankB is SRAM"
713 depends on BFIN_DCACHE && !BF531
714 default n
715 config BFIN_ICACHE_LOCK
716 bool "Enable Instruction Cache Locking"
717
718 choice
719 prompt "Policy"
720 depends on BFIN_DCACHE
721 default BFIN_WB
722 config BFIN_WB
723 bool "Write back"
724 help
725 Write Back Policy:
726 Cached data will be written back to SDRAM only when needed.
727 This can give a nice increase in performance, but beware of
728 broken drivers that do not properly invalidate/flush their
729 cache.
730
731 Write Through Policy:
732 Cached data will always be written back to SDRAM when the
733 cache is updated. This is a completely safe setting, but
734 performance is worse than Write Back.
735
736 If you are unsure of the options and you want to be safe,
737 then go with Write Through.
738
739 config BFIN_WT
740 bool "Write through"
741 help
742 Write Back Policy:
743 Cached data will be written back to SDRAM only when needed.
744 This can give a nice increase in performance, but beware of
745 broken drivers that do not properly invalidate/flush their
746 cache.
747
748 Write Through Policy:
749 Cached data will always be written back to SDRAM when the
750 cache is updated. This is a completely safe setting, but
751 performance is worse than Write Back.
752
753 If you are unsure of the options and you want to be safe,
754 then go with Write Through.
755
756 endchoice
757
758 config L1_MAX_PIECE
759 int "Set the max L1 SRAM pieces"
760 default 16
761 help
762 Set the max memory pieces for the L1 SRAM allocation algorithm.
763 Min value is 16. Max value is 1024.
764
765
766 config MPU
767 bool "Enable the memory protection unit (EXPERIMENTAL)"
768 default n
769 help
770 Use the processor's MPU to protect applications from accessing
771 memory they do not own. This comes at a performance penalty
772 and is recommended only for debugging.
773
774 comment "Asynchonous Memory Configuration"
775
776 menu "EBIU_AMGCTL Global Control"
777 config C_AMCKEN
778 bool "Enable CLKOUT"
779 default y
780
781 config C_CDPRIO
782 bool "DMA has priority over core for ext. accesses"
783 default n
784
785 config C_B0PEN
786 depends on BF561
787 bool "Bank 0 16 bit packing enable"
788 default y
789
790 config C_B1PEN
791 depends on BF561
792 bool "Bank 1 16 bit packing enable"
793 default y
794
795 config C_B2PEN
796 depends on BF561
797 bool "Bank 2 16 bit packing enable"
798 default y
799
800 config C_B3PEN
801 depends on BF561
802 bool "Bank 3 16 bit packing enable"
803 default n
804
805 choice
806 prompt"Enable Asynchonous Memory Banks"
807 default C_AMBEN_ALL
808
809 config C_AMBEN
810 bool "Disable All Banks"
811
812 config C_AMBEN_B0
813 bool "Enable Bank 0"
814
815 config C_AMBEN_B0_B1
816 bool "Enable Bank 0 & 1"
817
818 config C_AMBEN_B0_B1_B2
819 bool "Enable Bank 0 & 1 & 2"
820
821 config C_AMBEN_ALL
822 bool "Enable All Banks"
823 endchoice
824 endmenu
825
826 menu "EBIU_AMBCTL Control"
827 config BANK_0
828 hex "Bank 0"
829 default 0x7BB0
830
831 config BANK_1
832 hex "Bank 1"
833 default 0x7BB0
834
835 config BANK_2
836 hex "Bank 2"
837 default 0x7BB0
838
839 config BANK_3
840 hex "Bank 3"
841 default 0x99B3
842 endmenu
843
844 config EBIU_MBSCTLVAL
845 hex "EBIU Bank Select Control Register"
846 depends on BF54x
847 default 0
848
849 config EBIU_MODEVAL
850 hex "Flash Memory Mode Control Register"
851 depends on BF54x
852 default 1
853
854 config EBIU_FCTLVAL
855 hex "Flash Memory Bank Control Register"
856 depends on BF54x
857 default 6
858 endmenu
859
860 #############################################################################
861 menu "Bus options (PCI, PCMCIA, EISA, MCA, ISA)"
862
863 config PCI
864 bool "PCI support"
865 help
866 Support for PCI bus.
867
868 source "drivers/pci/Kconfig"
869
870 config HOTPLUG
871 bool "Support for hot-pluggable device"
872 help
873 Say Y here if you want to plug devices into your computer while
874 the system is running, and be able to use them quickly. In many
875 cases, the devices can likewise be unplugged at any time too.
876
877 One well known example of this is PCMCIA- or PC-cards, credit-card
878 size devices such as network cards, modems or hard drives which are
879 plugged into slots found on all modern laptop computers. Another
880 example, used on modern desktops as well as laptops, is USB.
881
882 Enable HOTPLUG and KMOD, and build a modular kernel. Get agent
883 software (at <http://linux-hotplug.sourceforge.net/>) and install it.
884 Then your kernel will automatically call out to a user mode "policy
885 agent" (/sbin/hotplug) to load modules and set up software needed
886 to use devices as you hotplug them.
887
888 source "drivers/pcmcia/Kconfig"
889
890 source "drivers/pci/hotplug/Kconfig"
891
892 endmenu
893
894 menu "Executable file formats"
895
896 source "fs/Kconfig.binfmt"
897
898 endmenu
899
900 menu "Power management options"
901 source "kernel/power/Kconfig"
902
903 config ARCH_SUSPEND_POSSIBLE
904 def_bool y
905 depends on !SMP
906
907 choice
908 prompt "Default Power Saving Mode"
909 depends on PM
910 default PM_BFIN_SLEEP_DEEPER
911 config PM_BFIN_SLEEP_DEEPER
912 bool "Sleep Deeper"
913 help
914 Sleep "Deeper" Mode (High Power Savings) - This mode reduces dynamic
915 power dissipation by disabling the clock to the processor core (CCLK).
916 Furthermore, Standby sets the internal power supply voltage (VDDINT)
917 to 0.85 V to provide the greatest power savings, while preserving the
918 processor state.
919 The PLL and system clock (SCLK) continue to operate at a very low
920 frequency of about 3.3 MHz. To preserve data integrity in the SDRAM,
921 the SDRAM is put into Self Refresh Mode. Typically an external event
922 such as GPIO interrupt or RTC activity wakes up the processor.
923 Various Peripherals such as UART, SPORT, PPI may not function as
924 normal during Sleep Deeper, due to the reduced SCLK frequency.
925 When in the sleep mode, system DMA access to L1 memory is not supported.
926
927 config PM_BFIN_SLEEP
928 bool "Sleep"
929 help
930 Sleep Mode (High Power Savings) - The sleep mode reduces power
931 dissipation by disabling the clock to the processor core (CCLK).
932 The PLL and system clock (SCLK), however, continue to operate in
933 this mode. Typically an external event or RTC activity will wake
934 up the processor. When in the sleep mode,
935 system DMA access to L1 memory is not supported.
936 endchoice
937
938 config PM_WAKEUP_BY_GPIO
939 bool "Cause Wakeup Event by GPIO"
940
941 config PM_WAKEUP_GPIO_NUMBER
942 int "Wakeup GPIO number"
943 range 0 47
944 depends on PM_WAKEUP_BY_GPIO
945 default 2 if BFIN537_STAMP
946
947 choice
948 prompt "GPIO Polarity"
949 depends on PM_WAKEUP_BY_GPIO
950 default PM_WAKEUP_GPIO_POLAR_H
951 config PM_WAKEUP_GPIO_POLAR_H
952 bool "Active High"
953 config PM_WAKEUP_GPIO_POLAR_L
954 bool "Active Low"
955 config PM_WAKEUP_GPIO_POLAR_EDGE_F
956 bool "Falling EDGE"
957 config PM_WAKEUP_GPIO_POLAR_EDGE_R
958 bool "Rising EDGE"
959 config PM_WAKEUP_GPIO_POLAR_EDGE_B
960 bool "Both EDGE"
961 endchoice
962
963 endmenu
964
965 if (BF537 || BF533 || BF54x)
966
967 menu "CPU Frequency scaling"
968
969 source "drivers/cpufreq/Kconfig"
970
971 config CPU_FREQ
972 bool
973 default n
974 help
975 If you want to enable this option, you should select the
976 DPMC driver from Character Devices.
977 endmenu
978
979 endif
980
981 source "net/Kconfig"
982
983 source "drivers/Kconfig"
984
985 source "fs/Kconfig"
986
987 source "arch/blackfin/Kconfig.debug"
988
989 source "security/Kconfig"
990
991 source "crypto/Kconfig"
992
993 source "lib/Kconfig"
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