forked from u-boot/u-boot
-
Notifications
You must be signed in to change notification settings - Fork 2
/
Copy pathKconfig
1904 lines (1603 loc) · 52.5 KB
/
Kconfig
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
menu "Command line interface"
config CMDLINE
bool "Support U-Boot commands"
default y
help
Enable U-Boot's command-line functions. This provides a means
to enter commands into U-Boot for a wide variety of purposes. It
also allows scripts (containing commands) to be executed.
Various commands and command categorys can be indivdually enabled.
Depending on the number of commands enabled, this can add
substantially to the size of U-Boot.
config HUSH_PARSER
bool "Use hush shell"
depends on CMDLINE
help
This option enables the "hush" shell (from Busybox) as command line
interpreter, thus enabling powerful command line syntax like
if...then...else...fi conditionals or `&&' and '||'
constructs ("shell scripts").
If disabled, you get the old, much simpler behaviour with a somewhat
smaller memory footprint.
config CMDLINE_EDITING
bool "Enable command line editing"
depends on CMDLINE
default y
help
Enable editing and History functions for interactive command line
input operations
config AUTO_COMPLETE
bool "Enable auto complete using TAB"
depends on CMDLINE
default y
help
Enable auto completion of commands using TAB.
config SYS_LONGHELP
bool "Enable long help messages"
depends on CMDLINE
default y if CMDLINE
help
Defined when you want long help messages included
Do not set this option when short of memory.
config SYS_PROMPT
string "Shell prompt"
default "=> "
help
This string is displayed in the command line to the left of the
cursor.
menu "Autoboot options"
config AUTOBOOT
bool "Autoboot"
default y
help
This enables the autoboot. See doc/README.autoboot for detail.
config AUTOBOOT_KEYED
bool "Stop autobooting via specific input key / string"
default n
help
This option enables stopping (aborting) of the automatic
boot feature only by issuing a specific input key or
string. If not enabled, any input key will abort the
U-Boot automatic booting process and bring the device
to the U-Boot prompt for user input.
config AUTOBOOT_PROMPT
string "Autoboot stop prompt"
depends on AUTOBOOT_KEYED
default "Autoboot in %d seconds\\n"
help
This string is displayed before the boot delay selected by
CONFIG_BOOTDELAY starts. If it is not defined there is no
output indicating that autoboot is in progress.
Note that this define is used as the (only) argument to a
printf() call, so it may contain '%' format specifications,
provided that it also includes, sepearated by commas exactly
like in a printf statement, the required arguments. It is
the responsibility of the user to select only such arguments
that are valid in the given context.
config AUTOBOOT_ENCRYPTION
bool "Enable encryption in autoboot stopping"
depends on AUTOBOOT_KEYED
default n
config AUTOBOOT_DELAY_STR
string "Delay autobooting via specific input key / string"
depends on AUTOBOOT_KEYED && !AUTOBOOT_ENCRYPTION
help
This option delays the automatic boot feature by issuing
a specific input key or string. If CONFIG_AUTOBOOT_DELAY_STR
or the environment variable "bootdelaykey" is specified
and this string is received from console input before
autoboot starts booting, U-Boot gives a command prompt. The
U-Boot prompt will time out if CONFIG_BOOT_RETRY_TIME is
used, otherwise it never times out.
config AUTOBOOT_STOP_STR
string "Stop autobooting via specific input key / string"
depends on AUTOBOOT_KEYED && !AUTOBOOT_ENCRYPTION
help
This option enables stopping (aborting) of the automatic
boot feature only by issuing a specific input key or
string. If CONFIG_AUTOBOOT_STOP_STR or the environment
variable "bootstopkey" is specified and this string is
received from console input before autoboot starts booting,
U-Boot gives a command prompt. The U-Boot prompt never
times out, even if CONFIG_BOOT_RETRY_TIME is used.
config AUTOBOOT_KEYED_CTRLC
bool "Enable Ctrl-C autoboot interruption"
depends on AUTOBOOT_KEYED && !AUTOBOOT_ENCRYPTION
default n
help
This option allows for the boot sequence to be interrupted
by ctrl-c, in addition to the "bootdelaykey" and "bootstopkey".
Setting this variable provides an escape sequence from the
limited "password" strings.
config AUTOBOOT_STOP_STR_SHA256
string "Stop autobooting via SHA256 encrypted password"
depends on AUTOBOOT_KEYED && AUTOBOOT_ENCRYPTION
help
This option adds the feature to only stop the autobooting,
and therefore boot into the U-Boot prompt, when the input
string / password matches a values that is encypted via
a SHA256 hash and saved in the environment.
endmenu
config BUILD_BIN2C
bool
comment "Commands"
menu "Info commands"
config CMD_BDI
bool "bdinfo"
default y
help
Print board info
config CMD_CONFIG
bool "config"
default SANDBOX
select BUILD_BIN2C
help
Print ".config" contents.
If this option is enabled, the ".config" file contents are embedded
in the U-Boot image and can be printed on the console by the "config"
command. This provides information of which options are enabled on
the running U-Boot.
config CMD_CONSOLE
bool "coninfo"
default y
help
Print console devices and information.
config CMD_CPU
bool "cpu"
help
Print information about available CPUs. This normally shows the
number of CPUs, type (e.g. manufacturer, architecture, product or
internal name) and clock frequency. Other information may be
available depending on the CPU driver.
config CMD_LICENSE
bool "license"
select BUILD_BIN2C
help
Print GPL license text
config CMD_REGINFO
bool "reginfo"
depends on PPC
help
Register dump
endmenu
menu "Boot commands"
config CMD_BOOTD
bool "bootd"
default y
help
Run the command stored in the environment "bootcmd", i.e.
"bootd" does the same thing as "run bootcmd".
config CMD_BOOTM
bool "bootm"
default y
help
Boot an application image from the memory.
config CMD_BOOTZ
bool "bootz"
help
Boot the Linux zImage
config CMD_BOOTI
bool "booti"
depends on ARM64
default y
help
Boot an AArch64 Linux Kernel image from memory.
config CMD_BOOTEFI
bool "bootefi"
depends on EFI_LOADER
default y
help
Boot an EFI image from memory.
config CMD_BOOTEFI_HELLO_COMPILE
bool "Compile a standard EFI hello world binary for testing"
depends on CMD_BOOTEFI && (ARM || X86 || RISCV)
default y
help
This compiles a standard EFI hello world application with U-Boot so
that it can be used with the test/py testing framework. This is useful
for testing that EFI is working at a basic level, and for bringing
up EFI support on a new architecture.
No additional space will be required in the resulting U-Boot binary
when this option is enabled.
config CMD_BOOTEFI_HELLO
bool "Allow booting a standard EFI hello world for testing"
depends on CMD_BOOTEFI_HELLO_COMPILE
help
This adds a standard EFI hello world application to U-Boot so that
it can be used with the 'bootefi hello' command. This is useful
for testing that EFI is working at a basic level, and for bringing
up EFI support on a new architecture.
source lib/efi_selftest/Kconfig
config CMD_BOOTMENU
bool "bootmenu"
select MENU
help
Add an ANSI terminal boot menu command.
config CMD_DTIMG
bool "dtimg"
help
Android DTB/DTBO image manipulation commands. Read dtb/dtbo files from
image into RAM, dump image structure information, etc. Those dtb/dtbo
files should be merged in one dtb further, which needs to be passed to
the kernel, as part of a boot process.
config CMD_ELF
bool "bootelf, bootvx"
default y
help
Boot an ELF/vxWorks image from the memory.
config CMD_FDT
bool "Flattened Device Tree utility commands"
default y
depends on OF_LIBFDT
help
Do FDT related setup before booting into the Operating System.
config CMD_GO
bool "go"
default y
help
Start an application at a given address.
config CMD_RUN
bool "run"
default y
help
Run the command in the given environment variable.
config CMD_IMI
bool "iminfo"
default y
help
Print header information for application image.
config CMD_IMLS
bool "imls"
help
List all images found in flash
config CMD_XIMG
bool "imxtract"
default y
help
Extract a part of a multi-image.
config CMD_SPL
bool "spl export - Export boot information for Falcon boot"
depends on SPL
help
Falcon mode allows booting directly from SPL into an Operating
System such as Linux, thus skipping U-Boot proper. See
doc/README.falcon for full information about how to use this
command.
config CMD_SPL_NAND_OFS
hex "Offset of OS command line args for Falcon-mode NAND boot"
depends on CMD_SPL
default 0
help
This provides the offset of the command line arguments for Linux
when booting from NAND in Falcon mode. See doc/README.falcon
for full information about how to use this option (and also see
board/gateworks/gw_ventana/README for an example).
config CMD_SPL_WRITE_SIZE
hex "Size of argument area"
depends on CMD_SPL
default 0x2000
help
This provides the size of the command-line argument area in NAND
flash used by Falcon-mode boot. See the documentation until CMD_SPL
for detail.
config CMD_FITUPD
bool "fitImage update command"
help
Implements the 'fitupd' command, which allows to automatically
store software updates present on a TFTP server in NOR Flash
config CMD_THOR_DOWNLOAD
bool "thor - TIZEN 'thor' download"
help
Implements the 'thor' download protocol. This is a way of
downloading a software update over USB from an attached host.
There is no documentation about this within the U-Boot source code
but you should be able to find something on the interwebs.
config CMD_ZBOOT
bool "zboot - x86 boot command"
help
With x86 machines it is common to boot a bzImage file which
contains both a kernel and a setup.bin file. The latter includes
configuration information from the dark ages which x86 boards still
need to pick things out of.
Consider using FIT in preference to this since it supports directly
booting both 32- and 64-bit kernels, as well as secure boot.
Documentation is available in doc/uImage.FIT/x86-fit-boot.txt
endmenu
menu "Environment commands"
config CMD_ASKENV
bool "ask for env variable"
help
Ask for environment variable
config CMD_EXPORTENV
bool "env export"
default y
help
Export environments.
config CMD_IMPORTENV
bool "env import"
default y
help
Import environments.
config CMD_EDITENV
bool "editenv"
default y
help
Edit environment variable.
config CMD_GREPENV
bool "search env"
help
Allow for searching environment variables
config CMD_SAVEENV
bool "saveenv"
default y
help
Save all environment variables into the compiled-in persistent
storage.
config CMD_ENV_EXISTS
bool "env exists"
default y
help
Check if a variable is defined in the environment for use in
shell scripting.
config CMD_ENV_CALLBACK
bool "env callbacks - print callbacks and their associated variables"
help
Some environment variable have callbacks defined by
U_BOOT_ENV_CALLBACK. These are called when the variable changes.
For example changing "baudrate" adjust the serial baud rate. This
command lists the currently defined callbacks.
config CMD_ENV_FLAGS
bool "env flags -print variables that have non-default flags"
help
Some environment variables have special flags that control their
behaviour. For example, serial# can only be written once and cannot
be deleted. This command shows the variables that have special
flags.
endmenu
menu "Memory commands"
config CMD_BINOP
bool "binop"
help
Compute binary operations (xor, or, and) of byte arrays of arbitrary
size from memory and store the result in memory or the environment.
config CMD_CRC32
bool "crc32"
default y
select HASH
help
Compute CRC32.
config CRC32_VERIFY
bool "crc32 -v"
depends on CMD_CRC32
help
Add -v option to verify data against a crc32 checksum.
config CMD_EEPROM
bool "eeprom - EEPROM subsystem"
depends on !DM_I2C || DM_I2C_COMPAT
help
(deprecated, needs conversion to driver model)
Provides commands to read and write EEPROM (Electrically Erasable
Programmable Read Only Memory) chips that are connected over an
I2C bus.
config CMD_EEPROM_LAYOUT
bool "Enable layout-aware eeprom commands"
depends on CMD_EEPROM
help
(deprecated, needs conversion to driver model)
When enabled, additional eeprom sub-commands become available.
eeprom print - prints the contents of the eeprom in a human-readable
way (eeprom layout fields, and data formatted to be fit for human
consumption).
eeprom update - allows user to update eeprom fields by specifying
the field name, and providing the new data in a human readable format
(same format as displayed by the eeprom print command).
Both commands can either auto detect the layout, or be told which
layout to use.
Feature API:
__weak int parse_layout_version(char *str)
- override to provide your own layout name parsing
__weak void __eeprom_layout_assign(struct eeprom_layout *layout,
int layout_version);
- override to setup the layout metadata based on the version
__weak int eeprom_layout_detect(unsigned char *data)
- override to provide your own algorithm for detecting layout
version
eeprom_field.c
- contains various printing and updating functions for common
types of eeprom fields. Can be used for defining
custom layouts.
config EEPROM_LAYOUT_HELP_STRING
string "Tells user what layout names are supported"
depends on CMD_EEPROM_LAYOUT
default "<not defined>"
help
Help printed with the LAYOUT VERSIONS part of the 'eeprom'
command's help.
config LOOPW
bool "loopw"
help
Infinite write loop on address range
config CMD_MD5SUM
bool "md5sum"
default n
select MD5
help
Compute MD5 checksum.
config MD5SUM_VERIFY
bool "md5sum -v"
default n
depends on CMD_MD5SUM
help
Add -v option to verify data against an MD5 checksum.
config CMD_MEMINFO
bool "meminfo"
help
Display memory information.
config CMD_MEMORY
bool "md, mm, nm, mw, cp, cmp, base, loop"
default y
help
Memory commands.
md - memory display
mm - memory modify (auto-incrementing address)
nm - memory modify (constant address)
mw - memory write (fill)
cp - memory copy
cmp - memory compare
base - print or set address offset
loop - initialize loop on address range
config CMD_MEMTEST
bool "memtest"
help
Simple RAM read/write test.
if CMD_MEMTEST
config SYS_ALT_MEMTEST
bool "Alternative test"
help
Use a more complete alternative memory test.
endif
config CMD_MX_CYCLIC
bool "mdc, mwc"
help
mdc - memory display cyclic
mwc - memory write cyclic
config CMD_SHA1SUM
bool "sha1sum"
select SHA1
help
Compute SHA1 checksum.
config SHA1SUM_VERIFY
bool "sha1sum -v"
depends on CMD_SHA1SUM
help
Add -v option to verify data against a SHA1 checksum.
config CMD_STRINGS
bool "strings - display strings in memory"
help
This works similarly to the Unix 'strings' command except that it
works with a memory range. String of printable characters found
within the range are displayed. The minimum number of characters
for a sequence to be considered a string can be provided.
endmenu
menu "Compression commands"
config CMD_LZMADEC
bool "lzmadec"
default y if CMD_BOOTI
select LZMA
help
Support decompressing an LZMA (Lempel-Ziv-Markov chain algorithm)
image from memory.
config CMD_UNZIP
bool "unzip"
default y if CMD_BOOTI
help
Uncompress a zip-compressed memory region.
config CMD_ZIP
bool "zip"
help
Compress a memory region with zlib deflate method.
endmenu
menu "Device access commands"
config CMD_ARMFLASH
#depends on FLASH_CFI_DRIVER
bool "armflash"
help
ARM Ltd reference designs flash partition access
config CMD_ADC
bool "adc - Access Analog to Digital Converters info and data"
select ADC
select DM_REGULATOR
help
Shows ADC device info and permit printing one-shot analog converted
data from a named Analog to Digital Converter.
config CMD_BIND
bool "bind/unbind - Bind or unbind a device to/from a driver"
depends on DM
help
Bind or unbind a device to/from a driver from the command line.
This is useful in situations where a device may be handled by several
drivers. For example, this can be used to bind a UDC to the usb ether
gadget driver from the command line.
config CMD_CLK
bool "clk - Show clock frequencies"
help
(deprecated)
Shows clock frequences by calling a sock_clk_dump() hook function.
This is depreated in favour of using the CLK uclass and accessing
clock values from associated drivers. However currently no command
exists for this.
config CMD_DEMO
bool "demo - Demonstration commands for driver model"
depends on DM
help
Provides a 'demo' command which can be used to play around with
driver model. To use this properly you will need to enable one or
both of the demo devices (DM_DEMO_SHAPE and DM_DEMO_SIMPLE).
Otherwise you will always get an empty list of devices. The demo
devices are defined in the sandbox device tree, so the easiest
option is to use sandbox and pass the -d point to sandbox's
u-boot.dtb file.
config CMD_DFU
bool "dfu"
select DFU
help
Enables the command "dfu" which is used to have U-Boot create a DFU
class device via USB. This command requires that the "dfu_alt_info"
environment variable be set and define the alt settings to expose to
the host.
config CMD_DM
bool "dm - Access to driver model information"
depends on DM
help
Provides access to driver model data structures and information,
such as a list of devices, list of uclasses and the state of each
device (e.g. activated). This is not required for operation, but
can be useful to see the state of driver model for debugging or
interest.
config CMD_FASTBOOT
bool "fastboot - Android fastboot support"
depends on FASTBOOT
help
This enables the command "fastboot" which enables the Android
fastboot mode for the platform. Fastboot is a protocol for
downloading images, flashing and device control used on
Android devices. Fastboot requires either the network stack
enabled or support for acting as a USB device.
See doc/README.android-fastboot for more information.
config CMD_FDC
bool "fdcboot - Boot from floppy device"
help
The 'fdtboot' command allows booting an image from a floppy disk.
config CMD_FLASH
bool "flinfo, erase, protect"
default y
help
NOR flash support.
flinfo - print FLASH memory information
erase - FLASH memory
protect - enable or disable FLASH write protection
config CMD_FPGA
bool "fpga"
depends on FPGA
default y
help
FPGA support.
config CMD_FPGA_LOADBP
bool "fpga loadbp - load partial bitstream (Xilinx only)"
depends on CMD_FPGA
help
Supports loading an FPGA device from a bitstream buffer containing
a partial bitstream.
config CMD_FPGA_LOADFS
bool "fpga loadfs - load bitstream from FAT filesystem (Xilinx only)"
depends on CMD_FPGA
help
Supports loading an FPGA device from a FAT filesystem.
config CMD_FPGA_LOADMK
bool "fpga loadmk - load bitstream from image"
depends on CMD_FPGA
help
Supports loading an FPGA device from a image generated by mkimage.
config CMD_FPGA_LOADP
bool "fpga loadp - load partial bitstream"
depends on CMD_FPGA
help
Supports loading an FPGA device from a bitstream buffer containing
a partial bitstream.
config CMD_FPGA_LOAD_SECURE
bool "fpga loads - loads secure bitstreams (Xilinx only)"
depends on CMD_FPGA
help
Enables the fpga loads command which is used to load secure
(authenticated or encrypted or both) bitstreams on to FPGA.
config CMD_FPGAD
bool "fpgad - dump FPGA registers"
help
(legacy, needs conversion to driver model)
Provides a way to dump FPGA registers by calling the board-specific
fpga_get_reg() function. This functions similarly to the 'md'
command.
config CMD_FUSE
bool "fuse - support for the fuse subssystem"
help
(deprecated - needs conversion to driver model)
This allows reading, sensing, programming or overriding fuses
which control the behaviour of the device. The command uses the
fuse_...() API.
config CMD_GPIO
bool "gpio"
help
GPIO support.
config CMD_GPT
bool "GPT (GUID Partition Table) command"
select EFI_PARTITION
select HAVE_BLOCK_DEVICE
select PARTITION_UUIDS
imply RANDOM_UUID
help
Enable the 'gpt' command to ready and write GPT style partition
tables.
config RANDOM_UUID
bool "GPT Random UUID generation"
select LIB_UUID
help
Enable the generation of partitions with random UUIDs if none
are provided.
config CMD_GPT_RENAME
bool "GPT partition renaming commands"
depends on CMD_GPT
help
Enables the 'gpt' command to interchange names on two GPT
partitions via the 'gpt swap' command or to rename single
partitions via the 'rename' command.
config CMD_IDE
bool "ide - Support for IDE drivers"
select IDE
help
Provides an 'ide' command which allows accessing the IDE drive,
reseting the IDE interface, printing the partition table and
geting device info. It also enables the 'diskboot' command which
permits booting from an IDE drive.
config CMD_IO
bool "io - Support for performing I/O accesses"
help
Provides an 'iod' command to display I/O space and an 'iow' command
to write values to the I/O space. This can be useful for manually
checking the state of devices during boot when debugging device
drivers, etc.
config CMD_IOTRACE
bool "iotrace - Support for tracing I/O activity"
help
Provides an 'iotrace' command which supports recording I/O reads and
writes in a trace buffer in memory . It also maintains a checksum
of the trace records (even if space is exhausted) so that the
sequence of I/O accesses can be verified.
When debugging drivers it is useful to see what I/O accesses were
done and in what order.
Even if the individual accesses are of little interest it can be
useful to verify that the access pattern is consistent each time
an operation is performed. In this case a checksum can be used to
characterise the operation of a driver. The checksum can be compared
across different runs of the operation to verify that the driver is
working properly.
In particular, when performing major refactoring of the driver, where
the access pattern should not change, the checksum provides assurance
that the refactoring work has not broken the driver.
This works by sneaking into the io.h heder for an architecture and
redirecting I/O accesses through iotrace's tracing mechanism.
For now no commands are provided to examine the trace buffer. The
format is fairly simple, so 'md' is a reasonable substitute.
Note: The checksum feature is only useful for I/O regions where the
contents do not change outside of software control. Where this is not
suitable you can fall back to manually comparing the addresses. It
might be useful to enhance tracing to only checksum the accesses and
not the data read/written.
config CMD_I2C
bool "i2c"
help
I2C support.
config CMD_W1
depends on W1
default y if W1
bool "w1 - Support for Dallas 1-Wire protocol"
help
Dallas 1-wire protocol support
config CMD_LOADB
bool "loadb"
default y
help
Load a binary file over serial line.
config CMD_LOADS
bool "loads"
default y
help
Load an S-Record file over serial line
config CMD_MMC
bool "mmc"
help
MMC memory mapped support.
config CMD_MMC_RPMB
bool "Enable support for RPMB in the mmc command"
depends on CMD_MMC
help
Enable the commands for reading, writing and programming the
key for the Replay Protection Memory Block partition in eMMC.
config CMD_MMC_SWRITE
bool "mmc swrite"
depends on CMD_MMC && MMC_WRITE
select IMAGE_SPARSE
help
Enable support for the "mmc swrite" command to write Android sparse
images to eMMC.
config CMD_MTD
bool "mtd"
select MTD_PARTITIONS
help
MTD commands support.
config CMD_NAND
bool "nand"
default y if NAND_SUNXI
help
NAND support.
if CMD_NAND
config CMD_NAND_TRIMFFS
bool "nand write.trimffs"
default y if ARCH_SUNXI
help
Allows one to skip empty pages when flashing something on a NAND.
config CMD_NAND_LOCK_UNLOCK
bool "nand lock/unlock"
help
NAND locking support.
config CMD_NAND_TORTURE
bool "nand torture"
help
NAND torture support.
endif # CMD_NAND
config CMD_NVME
bool "nvme"
depends on NVME
default y if NVME
help
NVM Express device support
config CMD_MMC_SPI
bool "mmc_spi - Set up MMC SPI device"
help
Provides a way to set up an MMC (Multimedia Card) SPI (Serial
Peripheral Interface) device. The device provides a means of
accessing an MMC device via SPI using a single data line, limited
to 20MHz. It is useful since it reduces the amount of protocol code
required.
config CMD_ONENAND
bool "onenand - access to onenand device"
help
OneNAND is a brand of NAND ('Not AND' gate) flash which provides
various useful features. This command allows reading, writing,
and erasing blocks. It allso provides a way to show and change
bad blocks, and test the device.
config CMD_OSD
bool "osd"
help
Enable the 'osd' command which allows to query information from and
write text data to a on-screen display (OSD) device; a virtual device
associated with a display capable of displaying a text overlay on the
display it's associated with..
config CMD_PART
bool "part"
select HAVE_BLOCK_DEVICE
select PARTITION_UUIDS
help
Read and display information about the partition table on
various media.
config CMD_PCI
bool "pci - Access PCI devices"
help
Provide access to PCI (Peripheral Interconnect Bus), a type of bus
used on some devices to allow the CPU to communicate with its
peripherals. Sub-commands allow bus enumeration, displaying and
changing configuration space and a few other features.
config CMD_PCMCIA
bool "pinit - Set up PCMCIA device"
help
Provides a means to initialise a PCMCIA (Personal Computer Memory
Card International Association) device. This is an old standard from
about 1990. These devices are typically removable memory or network
cards using a standard 68-pin connector.
config CMD_PINMUX
bool "pinmux - show pins muxing"
default y if PINCTRL
help
Parse all available pin-controllers and show pins muxing. This
is useful for debug purpoer to check the pin muxing and to know if
a pin is configured as a GPIO or as an alternate function.
config CMD_POWEROFF
bool "poweroff"
help
Poweroff/Shutdown the system
config CMD_READ
bool "read - Read binary data from a partition"
help
Provides low-level access to the data in a partition.
config CMD_REMOTEPROC
bool "remoteproc"
depends on REMOTEPROC
help
Support for Remote Processor control
config CMD_SATA
bool "sata - Access SATA subsystem"
select SATA
help
SATA (Serial Advanced Technology Attachment) is a serial bus
standard for connecting to hard drives and other storage devices.
This command provides information about attached devices and allows
reading, writing and other operations.
SATA replaces PATA (originally just ATA), which stands for Parallel AT
Attachment, where AT refers to an IBM AT (Advanced Technology)
computer released in 1984.
config CMD_SAVES
bool "saves - Save a file over serial in S-Record format"
help
Provides a way to save a binary file using the Motorola S-Record
format over the serial line.
config CMD_SCSI