4 bool "Boot timing and reporting"
6 Enable recording of boot time while booting. To use it, insert
7 calls to bootstage_mark() with a suitable BOOTSTAGE_ID from
8 bootstage.h. Only a single entry is recorded for each ID. You can
9 give the entry a name with bootstage_mark_name(). You can also
10 record elapsed time in a particular stage using bootstage_start()
11 before starting and bootstage_accum() when finished. Bootstage will
12 add up all the accumulated time and report it.
14 Normally, IDs are defined in bootstage.h but a small number of
15 additional 'user' IDs can be used by passing BOOTSTAGE_ID_ALLOC
18 Calls to show_boot_progress() will also result in log entries but
19 these will not have names.
22 bool "Boot timing and reported in SPL"
25 Enable recording of boot time in SPL. To make this visible to U-Boot
26 proper, enable BOOTSTAGE_STASH as well. This will stash the timing
27 information when SPL finishes and load it when U-Boot proper starts
31 bool "Boot timing and reported in TPL"
34 Enable recording of boot time in SPL. To make this visible to U-Boot
35 proper, enable BOOTSTAGE_STASH as well. This will stash the timing
36 information when TPL finishes and load it when U-Boot proper starts
39 config BOOTSTAGE_REPORT
40 bool "Display a detailed boot timing report before booting the OS"
43 Enable output of a boot time report just before the OS is booted.
44 This shows how long it took U-Boot to go through each stage of the
45 boot process. The report looks something like this:
47 Timer summary in microseconds:
50 3,575,678 3,575,678 board_init_f start
51 3,575,695 17 arch_cpu_init A9
52 3,575,777 82 arch_cpu_init done
53 3,659,598 83,821 board_init_r start
54 3,910,375 250,777 main_loop
55 29,916,167 26,005,792 bootm_start
56 30,361,327 445,160 start_kernel
58 config BOOTSTAGE_RECORD_COUNT
59 int "Number of boot stage records to store"
62 This is the size of the bootstage record list and is the maximum
63 number of bootstage records that can be recorded.
65 config SPL_BOOTSTAGE_RECORD_COUNT
66 int "Number of boot stage records to store for SPL"
69 This is the size of the bootstage record list and is the maximum
70 number of bootstage records that can be recorded.
72 config TPL_BOOTSTAGE_RECORD_COUNT
73 int "Number of boot stage records to store for TPL"
76 This is the size of the bootstage record list and is the maximum
77 number of bootstage records that can be recorded.
80 bool "Store boot timing information in the OS device tree"
83 Stash the bootstage information in the FDT. A root 'bootstage'
84 node is created with each bootstage id as a child. Each child
85 has a 'name' property and either 'mark' containing the
86 mark time in microseconds, or 'accum' containing the
87 accumulated time for that bootstage id in microseconds.
92 name = "board_init_f";
101 Code in the Linux kernel can find this in /proc/devicetree.
103 config BOOTSTAGE_STASH
104 bool "Stash the boot timing information in memory before booting OS"
107 Some OSes do not support device tree. Bootstage can instead write
108 the boot timing information in a binary format at a given address.
109 This happens through a call to bootstage_stash(), typically in
110 the CPU's cleanup_before_linux() function. You can use the
111 'bootstage stash' and 'bootstage unstash' commands to do this on
114 config BOOTSTAGE_STASH_ADDR
115 hex "Address to stash boot timing information"
118 Provide an address which will not be overwritten by the OS when it
119 starts, so that it can read this information when ready.
121 config BOOTSTAGE_STASH_SIZE
122 hex "Size of boot timing stash region"
125 This should be large enough to hold the bootstage stash. A value of
126 4096 (4KiB) is normally plenty.
128 config SHOW_BOOT_PROGRESS
129 bool "Show boot progress in a board-specific manner"
131 Defining this option allows to add some board-specific code (calling
132 a user-provided function show_boot_progress(int) that enables you to
133 show the system's boot progress on some display (for example, some
134 LEDs) on your board. At the moment, the following checkpoints are
137 Legacy uImage format:
140 1 common/cmd_bootm.c before attempting to boot an image
141 -1 common/cmd_bootm.c Image header has bad magic number
142 2 common/cmd_bootm.c Image header has correct magic number
143 -2 common/cmd_bootm.c Image header has bad checksum
144 3 common/cmd_bootm.c Image header has correct checksum
145 -3 common/cmd_bootm.c Image data has bad checksum
146 4 common/cmd_bootm.c Image data has correct checksum
147 -4 common/cmd_bootm.c Image is for unsupported architecture
148 5 common/cmd_bootm.c Architecture check OK
149 -5 common/cmd_bootm.c Wrong Image Type (not kernel, multi)
150 6 common/cmd_bootm.c Image Type check OK
151 -6 common/cmd_bootm.c gunzip uncompression error
152 -7 common/cmd_bootm.c Unimplemented compression type
153 7 common/cmd_bootm.c Uncompression OK
154 8 common/cmd_bootm.c No uncompress/copy overwrite error
155 -9 common/cmd_bootm.c Unsupported OS (not Linux, BSD, VxWorks, QNX)
157 9 common/image.c Start initial ramdisk verification
158 -10 common/image.c Ramdisk header has bad magic number
159 -11 common/image.c Ramdisk header has bad checksum
160 10 common/image.c Ramdisk header is OK
161 -12 common/image.c Ramdisk data has bad checksum
162 11 common/image.c Ramdisk data has correct checksum
163 12 common/image.c Ramdisk verification complete, start loading
164 -13 common/image.c Wrong Image Type (not PPC Linux ramdisk)
165 13 common/image.c Start multifile image verification
166 14 common/image.c No initial ramdisk, no multifile, continue.
168 15 arch/<arch>/lib/bootm.c All preparation done, transferring control to OS
170 -30 arch/powerpc/lib/board.c Fatal error, hang the system
171 -31 post/post.c POST test failed, detected by post_output_backlog()
172 -32 post/post.c POST test failed, detected by post_run_single()
174 34 common/cmd_doc.c before loading a Image from a DOC device
175 -35 common/cmd_doc.c Bad usage of "doc" command
176 35 common/cmd_doc.c correct usage of "doc" command
177 -36 common/cmd_doc.c No boot device
178 36 common/cmd_doc.c correct boot device
179 -37 common/cmd_doc.c Unknown Chip ID on boot device
180 37 common/cmd_doc.c correct chip ID found, device available
181 -38 common/cmd_doc.c Read Error on boot device
182 38 common/cmd_doc.c reading Image header from DOC device OK
183 -39 common/cmd_doc.c Image header has bad magic number
184 39 common/cmd_doc.c Image header has correct magic number
185 -40 common/cmd_doc.c Error reading Image from DOC device
186 40 common/cmd_doc.c Image header has correct magic number
187 41 common/cmd_ide.c before loading a Image from a IDE device
188 -42 common/cmd_ide.c Bad usage of "ide" command
189 42 common/cmd_ide.c correct usage of "ide" command
190 -43 common/cmd_ide.c No boot device
191 43 common/cmd_ide.c boot device found
192 -44 common/cmd_ide.c Device not available
193 44 common/cmd_ide.c Device available
194 -45 common/cmd_ide.c wrong partition selected
195 45 common/cmd_ide.c partition selected
196 -46 common/cmd_ide.c Unknown partition table
197 46 common/cmd_ide.c valid partition table found
198 -47 common/cmd_ide.c Invalid partition type
199 47 common/cmd_ide.c correct partition type
200 -48 common/cmd_ide.c Error reading Image Header on boot device
201 48 common/cmd_ide.c reading Image Header from IDE device OK
202 -49 common/cmd_ide.c Image header has bad magic number
203 49 common/cmd_ide.c Image header has correct magic number
204 -50 common/cmd_ide.c Image header has bad checksum
205 50 common/cmd_ide.c Image header has correct checksum
206 -51 common/cmd_ide.c Error reading Image from IDE device
207 51 common/cmd_ide.c reading Image from IDE device OK
208 52 common/cmd_nand.c before loading a Image from a NAND device
209 -53 common/cmd_nand.c Bad usage of "nand" command
210 53 common/cmd_nand.c correct usage of "nand" command
211 -54 common/cmd_nand.c No boot device
212 54 common/cmd_nand.c boot device found
213 -55 common/cmd_nand.c Unknown Chip ID on boot device
214 55 common/cmd_nand.c correct chip ID found, device available
215 -56 common/cmd_nand.c Error reading Image Header on boot device
216 56 common/cmd_nand.c reading Image Header from NAND device OK
217 -57 common/cmd_nand.c Image header has bad magic number
218 57 common/cmd_nand.c Image header has correct magic number
219 -58 common/cmd_nand.c Error reading Image from NAND device
220 58 common/cmd_nand.c reading Image from NAND device OK
222 -60 common/env_common.c Environment has a bad CRC, using default
224 64 net/eth.c starting with Ethernet configuration.
225 -64 net/eth.c no Ethernet found.
226 65 net/eth.c Ethernet found.
228 -80 common/cmd_net.c usage wrong
229 80 common/cmd_net.c before calling net_loop()
230 -81 common/cmd_net.c some error in net_loop() occurred
231 81 common/cmd_net.c net_loop() back without error
232 -82 common/cmd_net.c size == 0 (File with size 0 loaded)
233 82 common/cmd_net.c trying automatic boot
234 83 common/cmd_net.c running "source" command
235 -83 common/cmd_net.c some error in automatic boot or "source" command
236 84 common/cmd_net.c end without errors
241 100 common/cmd_bootm.c Kernel FIT Image has correct format
242 -100 common/cmd_bootm.c Kernel FIT Image has incorrect format
243 101 common/cmd_bootm.c No Kernel subimage unit name, using configuration
244 -101 common/cmd_bootm.c Can't get configuration for kernel subimage
245 102 common/cmd_bootm.c Kernel unit name specified
246 -103 common/cmd_bootm.c Can't get kernel subimage node offset
247 103 common/cmd_bootm.c Found configuration node
248 104 common/cmd_bootm.c Got kernel subimage node offset
249 -104 common/cmd_bootm.c Kernel subimage hash verification failed
250 105 common/cmd_bootm.c Kernel subimage hash verification OK
251 -105 common/cmd_bootm.c Kernel subimage is for unsupported architecture
252 106 common/cmd_bootm.c Architecture check OK
253 -106 common/cmd_bootm.c Kernel subimage has wrong type
254 107 common/cmd_bootm.c Kernel subimage type OK
255 -107 common/cmd_bootm.c Can't get kernel subimage data/size
256 108 common/cmd_bootm.c Got kernel subimage data/size
257 -108 common/cmd_bootm.c Wrong image type (not legacy, FIT)
258 -109 common/cmd_bootm.c Can't get kernel subimage type
259 -110 common/cmd_bootm.c Can't get kernel subimage comp
260 -111 common/cmd_bootm.c Can't get kernel subimage os
261 -112 common/cmd_bootm.c Can't get kernel subimage load address
262 -113 common/cmd_bootm.c Image uncompress/copy overwrite error
264 120 common/image.c Start initial ramdisk verification
265 -120 common/image.c Ramdisk FIT image has incorrect format
266 121 common/image.c Ramdisk FIT image has correct format
267 122 common/image.c No ramdisk subimage unit name, using configuration
268 -122 common/image.c Can't get configuration for ramdisk subimage
269 123 common/image.c Ramdisk unit name specified
270 -124 common/image.c Can't get ramdisk subimage node offset
271 125 common/image.c Got ramdisk subimage node offset
272 -125 common/image.c Ramdisk subimage hash verification failed
273 126 common/image.c Ramdisk subimage hash verification OK
274 -126 common/image.c Ramdisk subimage for unsupported architecture
275 127 common/image.c Architecture check OK
276 -127 common/image.c Can't get ramdisk subimage data/size
277 128 common/image.c Got ramdisk subimage data/size
278 129 common/image.c Can't get ramdisk load address
279 -129 common/image.c Got ramdisk load address
281 -130 common/cmd_doc.c Incorrect FIT image format
282 131 common/cmd_doc.c FIT image format OK
284 -140 common/cmd_ide.c Incorrect FIT image format
285 141 common/cmd_ide.c FIT image format OK
287 -150 common/cmd_nand.c Incorrect FIT image format
288 151 common/cmd_nand.c FIT image format OK
295 bool "Support for booting from NOR flash"
298 Enabling this will make a U-Boot binary that is capable of being
299 booted via NOR. In this case we will enable certain pinmux early
300 as the ROM only partially sets up pinmux. We also default to using
304 bool "Support for booting from NAND flash"
308 Enabling this will make a U-Boot binary that is capable of being
309 booted via NAND flash. This is not a must, some SoCs need this,
313 bool "Support for booting from ONENAND"
317 Enabling this will make a U-Boot binary that is capable of being
318 booted via ONENAND. This is not a must, some SoCs need this,
322 bool "Support for booting from QSPI flash"
325 Enabling this will make a U-Boot binary that is capable of being
326 booted via QSPI flash. This is not a must, some SoCs need this,
330 bool "Support for booting from SATA"
333 Enabling this will make a U-Boot binary that is capable of being
334 booted via SATA. This is not a must, some SoCs need this,
338 bool "Support for booting from SD/EMMC"
341 Enabling this will make a U-Boot binary that is capable of being
342 booted via SD/EMMC. This is not a must, some SoCs need this,
346 bool "Support for booting from SPI flash"
349 Enabling this will make a U-Boot binary that is capable of being
350 booted via SPI flash. This is not a must, some SoCs need this,
356 int "delay in seconds before automatically booting"
360 Delay before automatically running bootcmd;
361 set to 0 to autoboot with no delay, but you can stop it by key input.
362 set to -1 to disable autoboot.
363 set to -2 to autoboot with no delay and not check for abort
365 If this value is >= 0 then it is also used for the default delay
366 before starting the default entry in bootmenu. If it is < 0 then
367 a default value of 10s is used.
369 See doc/README.autoboot for details.
372 bool "Enable boot arguments"
374 Provide boot arguments to bootm command. Boot arguments are specified
375 in CONFIG_BOOTARGS option. Enable this option to be able to specify
376 CONFIG_BOOTARGS string. If this option is disabled, CONFIG_BOOTARGS
377 will be undefined and won't take any space in U-Boot image.
380 string "Boot arguments"
381 depends on USE_BOOTARGS
383 This can be used to pass arguments to the bootm command. The value of
384 CONFIG_BOOTARGS goes into the environment value "bootargs". Note that
385 this value will also override the "chosen" node in FDT blob.
387 config USE_BOOTCOMMAND
388 bool "Enable a default value for bootcmd"
390 Provide a default value for the bootcmd entry in the environment. If
391 autoboot is enabled this is what will be run automatically. Enable
392 this option to be able to specify CONFIG_BOOTCOMMAND as a string. If
393 this option is disabled, CONFIG_BOOTCOMMAND will be undefined and
394 won't take any space in U-Boot image.
397 string "bootcmd value"
398 depends on USE_BOOTCOMMAND
399 default "run distro_bootcmd" if DISTRO_DEFAULTS
401 This is the string of commands that will be used as bootcmd and if
402 AUTOBOOT is set, automatically run.
405 bool "Enable preboot"
406 default "usb start" if USB_KEYBOARD
408 When this option is enabled, the existence of the environment
409 variable "preboot" will be checked immediately before starting the
410 CONFIG_BOOTDELAY countdown and/or running the auto-boot command resp.
411 entering interactive mode.
413 This feature is especially useful when "preboot" is automatically
414 generated or modified. For example, the boot code can modify the
415 "preboot" when a user holds down a certain combination of keys.
418 string "preboot default value"
419 depends on USE_PREBOOT
422 This is the default of "preboot" environment variable.
429 This is the library functionality to provide a text-based menu of
430 choices for the user to make choices with.
432 config CONSOLE_RECORD
433 bool "Console recording"
435 This provides a way to record console output (and provide console
436 input) through circular buffers. This is mostly useful for testing.
437 Console output is recorded even when the console is silent.
438 To enable console recording, call console_record_reset_enable()
441 config CONSOLE_RECORD_OUT_SIZE
442 hex "Output buffer size"
443 depends on CONSOLE_RECORD
444 default 0x400 if CONSOLE_RECORD
446 Set the size of the console output buffer. When this fills up, no
447 more data will be recorded until some is removed. The buffer is
448 allocated immediately after the malloc() region is ready.
450 config CONSOLE_RECORD_IN_SIZE
451 hex "Input buffer size"
452 depends on CONSOLE_RECORD
453 default 0x100 if CONSOLE_RECORD
455 Set the size of the console input buffer. When this contains data,
456 tstc() and getc() will use this in preference to real device input.
457 The buffer is allocated immediately after the malloc() region is
460 config DISABLE_CONSOLE
461 bool "Add functionality to disable console completely"
463 Disable console (in & out).
466 string "Board specific string to be added to uboot version string"
468 This options adds the board specific name to u-boot version.
475 All Messages with a loglevel smaller than the console loglevel will
476 be compiled in. The loglevels are defined as follows:
487 9 - debug hardware I/O
497 config SILENT_CONSOLE
498 bool "Support a silent console"
500 This option allows the console to be silenced, meaning that no
501 output will appear on the console devices. This is controlled by
502 setting the environment variable 'silent' to a non-empty value.
503 Note this also silences the console when booting Linux.
505 When the console is set up, the variable is checked, and the
506 GD_FLG_SILENT flag is set. Changing the environment variable later
507 will update the flag.
509 config SILENT_U_BOOT_ONLY
510 bool "Only silence the U-Boot console"
511 depends on SILENT_CONSOLE
513 Normally when the U-Boot console is silenced, Linux's console is
514 also silenced (assuming the board boots into Linux). This option
515 allows the linux console to operate normally, even if U-Boot's
518 config SILENT_CONSOLE_UPDATE_ON_SET
519 bool "Changes to the 'silent' environment variable update immediately"
520 depends on SILENT_CONSOLE
521 default y if SILENT_CONSOLE
523 When the 'silent' environment variable is changed, update the
524 console silence flag immediately. This allows 'setenv' to be used
525 to silence or un-silence the console.
527 The effect is that any change to the variable will affect the
530 config SILENT_CONSOLE_UPDATE_ON_RELOC
531 bool "Allow flags to take effect on relocation"
532 depends on SILENT_CONSOLE
534 In some cases the environment is not available until relocation
535 (e.g. NAND). This option makes the value of the 'silent'
536 environment variable take effect at relocation.
538 config PRE_CONSOLE_BUFFER
539 bool "Buffer characters before the console is available"
541 Prior to the console being initialised (i.e. serial UART
542 initialised etc) all console output is silently discarded.
543 Defining CONFIG_PRE_CONSOLE_BUFFER will cause U-Boot to
544 buffer any console messages prior to the console being
545 initialised to a buffer. The buffer is a circular buffer, so
546 if it overflows, earlier output is discarded.
548 Note that this is not currently supported in SPL. It would be
549 useful to be able to share the pre-console buffer with SPL.
551 config PRE_CON_BUF_SZ
552 int "Sets the size of the pre-console buffer"
553 depends on PRE_CONSOLE_BUFFER
556 The size of the pre-console buffer affects how much console output
557 can be held before it overflows and starts discarding earlier
558 output. Normally there is very little output at this early stage,
559 unless debugging is enabled, so allow enough for ~10 lines of
562 This is a useful feature if you are using a video console and
563 want to see the full boot output on the console. Without this
564 option only the post-relocation output will be displayed.
566 config PRE_CON_BUF_ADDR
567 hex "Address of the pre-console buffer"
568 depends on PRE_CONSOLE_BUFFER
569 default 0x2f000000 if ARCH_SUNXI && MACH_SUN9I
570 default 0x4f000000 if ARCH_SUNXI && !MACH_SUN9I
571 default 0x0f000000 if ROCKCHIP_RK3288
572 default 0x0f200000 if ROCKCHIP_RK3399
574 This sets the start address of the pre-console buffer. This must
575 be in available memory and is accessed before relocation and
576 possibly before DRAM is set up. Therefore choose an address
579 We should consider removing this option and allocating the memory
580 in board_init_f_init_reserve() instead.
583 bool "Enable console multiplexing"
584 default y if DM_VIDEO || VIDEO || LCD
586 This allows multiple devices to be used for each console 'file'.
587 For example, stdout can be set to go to serial and video.
588 Similarly, stdin can be set to come from serial and keyboard.
589 Input can be provided from either source. Console multiplexing
590 adds a small amount of size to U-Boot. Changes to the environment
591 variables stdout, stdin and stderr will take effect immediately.
593 config SYS_CONSOLE_IS_IN_ENV
594 bool "Select console devices from the environment"
595 default y if CONSOLE_MUX
597 This allows multiple input/output devices to be set at boot time.
598 For example, if stdout is set to "serial,video" then output will
599 be sent to both the serial and video devices on boot. The
600 environment variables can be updated after boot to change the
601 input/output devices.
603 config SYS_CONSOLE_OVERWRITE_ROUTINE
604 bool "Allow board control over console overwriting"
606 If this is enabled, and the board-specific function
607 overwrite_console() returns 1, the stdin, stderr and stdout are
608 switched to the serial port, else the settings in the environment
609 are used. If this is not enabled, the console will not be switched
612 config SYS_CONSOLE_ENV_OVERWRITE
613 bool "Update environment variables during console init"
615 The console environment variables (stdout, stdin, stderr) can be
616 used to determine the correct console devices on start-up. This
617 option writes the console devices to these variables on console
618 start-up (after relocation). This causes the environment to be
619 updated to match the console devices actually chosen.
621 config SYS_CONSOLE_INFO_QUIET
622 bool "Don't display the console devices on boot"
624 Normally U-Boot displays the current settings for stdout, stdin
625 and stderr on boot when the post-relocation console is set up.
626 Enable this option to suppress this output. It can be obtained by
627 calling stdio_print_current_devices() from board code.
629 config SYS_STDIO_DEREGISTER
630 bool "Allow deregistering stdio devices"
631 default y if USB_KEYBOARD
633 Generally there is no need to deregister stdio devices since they
634 are never deactivated. But if a stdio device is used which can be
635 removed (for example a USB keyboard) then this option can be
636 enabled to ensure this is handled correctly.
643 bool "Enable logging support"
646 This enables support for logging of status and debug messages. These
647 can be displayed on the console, recorded in a memory buffer, or
648 discarded if not needed. Logging supports various categories and
654 int "Maximum log level to record"
658 This selects the maximum log level that will be recorded. Any value
659 higher than this will be ignored. If possible log statements below
660 this level will be discarded at build time. Levels:
671 9 - debug hardware I/O
673 config LOG_DEFAULT_LEVEL
674 int "Default logging level to display"
675 default LOG_MAX_LEVEL
676 range 0 LOG_MAX_LEVEL
678 This is the default logging level set when U-Boot starts. It can
679 be adjusted later using the 'log level' command. Note that setting
680 this to a value above LOG_MAX_LEVEL will be ineffective, since the
681 higher levels are not compiled in to U-Boot.
692 9 - debug hardware I/O
695 bool "Allow log output to the console"
698 Enables a log driver which writes log records to the console.
699 Generally the console is the serial port or LCD display. Only the
700 log message is shown - other details like level, category, file and
701 line number are omitted.
704 bool "Show source file name in log messages by default"
706 Show the source file name in log messages by default. This value
707 can be overridden using the 'log format' command.
710 bool "Show source line number in log messages by default"
712 Show the source line number in log messages by default. This value
713 can be overridden using the 'log format' command.
716 bool "Show function name in log messages by default"
718 Show the function name in log messages by default. This value can
719 be overridden using the 'log format' command.
722 bool "Log output to syslog server"
725 Enables a log driver which broadcasts log records via UDP port 514
729 bool "Enable logging support in SPL"
732 This enables support for logging of status and debug messages. These
733 can be displayed on the console, recorded in a memory buffer, or
734 discarded if not needed. Logging supports various categories and
739 config SPL_LOG_MAX_LEVEL
740 int "Maximum log level to record in SPL"
745 This selects the maximum log level that will be recorded. Any value
746 higher than this will be ignored. If possible log statements below
747 this level will be discarded at build time. Levels:
758 9 - debug hardware I/O
760 config SPL_LOG_CONSOLE
761 bool "Allow log output to the console in SPL"
764 Enables a log driver which writes log records to the console.
765 Generally the console is the serial port or LCD display. Only the
766 log message is shown - other details like level, category, file and
767 line number are omitted.
772 bool "Enable logging support in TPL"
775 This enables support for logging of status and debug messages. These
776 can be displayed on the console, recorded in a memory buffer, or
777 discarded if not needed. Logging supports various categories and
782 config TPL_LOG_MAX_LEVEL
783 int "Maximum log level to record in TPL"
788 This selects the maximum log level that will be recorded. Any value
789 higher than this will be ignored. If possible log statements below
790 this level will be discarded at build time. Levels:
801 9 - debug hardware I/O
803 config TPL_LOG_CONSOLE
804 bool "Allow log output to the console in TPL"
807 Enables a log driver which writes log records to the console.
808 Generally the console is the serial port or LCD display. Only the
809 log message is shown - other details like level, category, file and
810 line number are omitted.
814 config LOG_ERROR_RETURN
815 bool "Log all functions which return an error"
817 When an error is returned in U-Boot it is sometimes difficult to
818 figure out the root cause. For example, reading from SPI flash may
819 fail due to a problem in the SPI controller or due to the flash part
820 not returning the expected information. This option changes
821 log_ret() to log any errors it sees. With this option disabled,
824 You can add log_ret() to all functions which return an error code.
827 bool "Provide a test for logging"
831 This enables a 'log test' command to test logging. It is normally
832 executed from a pytest and simply outputs logging information
833 in various different ways to test that the logging system works
834 correctly with various settings.
840 config SUPPORT_RAW_INITRD
841 bool "Enable raw initrd images"
843 Note, defining the SUPPORT_RAW_INITRD allows user to supply
844 kernel with raw initrd images. The syntax is slightly different, the
845 address of the initrd must be augmented by it's size, in the following
846 format: "<initrd address>:<initrd size>".
848 config DEFAULT_FDT_FILE
849 string "Default fdt file"
851 This option is used to set the default fdt file to boot OS.
854 bool "Execute Misc Init"
855 default y if ARCH_KEYSTONE || ARCH_SUNXI || MPC85xx
856 default y if ARCH_OMAP2PLUS && !AM33XX
858 Enabling this option calls 'misc_init_r' function
860 config VERSION_VARIABLE
861 bool "add U-Boot environment variable vers"
864 If this variable is defined, an environment variable
865 named "ver" is created by U-Boot showing the U-Boot
866 version as printed by the "version" command.
867 Any change to this variable will be reverted at the
870 config BOARD_LATE_INIT
871 bool "Execute Board late init"
873 Sometimes board require some initialization code that might
874 require once the actual init done, example saving board specific env,
875 boot-modes etc. which eventually done at late.
877 So this config enable the late init code with the help of board_late_init
878 function which should defined on respective boards.
880 config DISPLAY_CPUINFO
881 bool "Display information about the CPU during start up"
882 default y if ARC|| ARM || NIOS2 || X86 || XTENSA || M68K
884 Display information about the CPU that U-Boot is running on
885 when U-Boot starts up. The function print_cpuinfo() is called
888 config DISPLAY_BOARDINFO
889 bool "Display information about the board during early start up"
890 default y if ARC || ARM || M68K || MIPS || PPC || SANDBOX || XTENSA
892 Display information about the board that U-Boot is running on
893 when U-Boot starts up. The board function checkboard() is called
896 config DISPLAY_BOARDINFO_LATE
897 bool "Display information about the board during late start up"
899 Display information about the board that U-Boot is running on after
900 the relocation phase. The board function checkboard() is called to do
904 bool "Include bounce buffer API"
906 Some peripherals support DMA from a subset of physically
907 addressable memory only. To support such peripherals, the
908 bounce buffer API uses a temporary buffer: it copies data
909 to/from DMA regions while managing cache operations.
911 A second possible use of bounce buffers is their ability to
912 provide aligned buffers for DMA operations.
915 bool "Call get_board_type() to get and display the board type"
917 If this option is enabled, checkboard() will call get_board_type()
918 to get a string containing the board type and this will be
919 displayed immediately after the model is shown on the console
922 menu "Start-up hooks"
924 config ARCH_EARLY_INIT_R
925 bool "Call arch-specific init soon after relocation"
927 With this option U-Boot will call arch_early_init_r() soon after
928 relocation. Driver model is running by this point, and the cache
929 is on. Note that board_early_init_r() is called first, if
930 enabled. This can be used to set up architecture-specific devices.
932 config ARCH_MISC_INIT
933 bool "Call arch-specific init after relocation, when console is ready"
935 With this option U-Boot will call arch_misc_init() after
936 relocation to allow miscellaneous arch-dependent initialisation
937 to be performed. This function should be defined by the board
938 and will be called after the console is set up, after relocation.
940 config BOARD_EARLY_INIT_F
941 bool "Call board-specific init before relocation"
943 Some boards need to perform initialisation as soon as possible
944 after boot. With this option, U-Boot calls board_early_init_f()
945 after driver model is ready in the pre-relocation init sequence.
946 Note that the normal serial console is not yet set up, but the
947 debug UART will be available if enabled.
949 config BOARD_EARLY_INIT_R
950 bool "Call board-specific init after relocation"
952 Some boards need to perform initialisation as directly after
953 relocation. With this option, U-Boot calls board_early_init_r()
954 in the post-relocation init sequence.
956 config LAST_STAGE_INIT
957 bool "Call board-specific as last setup step"
959 Some boards need to perform initialisation immediately before control
960 is passed to the command-line interpreter (e.g. for initializations
961 that depend on later phases in the init sequence). With this option,
962 U-Boot calls last_stage_init() before the command-line interpreter is
966 bool "Enumerate PCI buses during init"
970 With this option U-Boot will call pci_init() soon after relocation,
971 which will enumerate PCI buses. This is needed, for instance, in the
972 case of DM PCI-based Ethernet devices, which will not be detected
973 without having the enumeration performed earlier.
977 menu "Security support"
980 bool # "Support hashing API (SHA1, SHA256, etc.)"
982 This provides a way to hash data in memory using various supported
983 algorithms (such as SHA1, MD5, CRC32). The API is defined in hash.h
984 and the algorithms it supports are defined in common/hash.c. See
985 also CMD_HASH for command-line access.
988 bool "Build Android Verified Boot operations"
989 depends on LIBAVB && FASTBOOT
990 depends on PARTITION_UUIDS
992 This option enables compilation of bootloader-dependent operations,
993 used by Android Verified Boot 2.0 library (libavb). Includes:
994 * Helpers to process strings in order to build OS bootargs.
995 * Helpers to access MMC, similar to drivers/fastboot/fb_mmc.c.
996 * Helpers to alloc/init/free avb ops.
999 bool # "Support hashing API (SHA1, SHA256, etc.)"
1001 This provides a way to hash data in memory using various supported
1002 algorithms (such as SHA1, MD5, CRC32). The API is defined in hash.h
1003 and the algorithms it supports are defined in common/hash.c. See
1004 also CMD_HASH for command-line access.
1007 bool # "Support hashing API (SHA1, SHA256, etc.)"
1009 This provides a way to hash data in memory using various supported
1010 algorithms (such as SHA1, MD5, CRC32). The API is defined in hash.h
1011 and the algorithms it supports are defined in common/hash.c. See
1012 also CMD_HASH for command-line access.
1016 menu "Update support"
1019 bool "Auto-update using fitImage via TFTP"
1022 This option allows performing update of NOR with data in fitImage
1025 config UPDATE_TFTP_CNT_MAX
1026 int "The number of connection retries during auto-update"
1028 depends on UPDATE_TFTP
1030 config UPDATE_TFTP_MSEC_MAX
1031 int "Delay in mSec to wait for the TFTP server during auto-update"
1033 depends on UPDATE_TFTP
1036 bool "Android A/B updates"
1039 If enabled, adds support for the new Android A/B update model. This
1040 allows the bootloader to select which slot to boot from based on the
1041 information provided by userspace via the Android boot_ctrl HAL. This
1042 allows a bootloader to try a new version of the system but roll back
1043 to previous version if the new one didn't boot all the way.
1050 bool "Support for a bloblist"
1052 This enables support for a bloblist in U-Boot, which can be passed
1053 from TPL to SPL to U-Boot proper (and potentially to Linux). The
1054 blob list supports multiple binary blobs of data, each with a tag,
1055 so that different U-Boot components can store data which can survive
1056 through to the next stage of the boot.
1059 bool "Support for a bloblist in SPL"
1063 This enables a bloblist in SPL. If this is the first part of U-Boot
1064 to run, then the bloblist is set up in SPL and passed to U-Boot
1065 proper. If TPL also has a bloblist, then SPL uses the one from there.
1068 bool "Support for a bloblist in TPL"
1072 This enables a bloblist in TPL. The bloblist is set up in TPL and
1073 passed to SPL and U-Boot proper.
1075 config BLOBLIST_SIZE
1076 hex "Size of bloblist"
1080 Sets the size of the bloblist in bytes. This must include all
1081 overhead (alignment, bloblist header, record header). The bloblist
1082 is set up in the first part of U-Boot to run (TPL, SPL or U-Boot
1083 proper), and this sane bloblist is used for subsequent stages.
1085 config BLOBLIST_ADDR
1086 hex "Address of bloblist"
1088 default 0xe000 if SANDBOX
1090 Sets the address of the bloblist, set up by the first part of U-Boot
1091 which runs. Subsequent U-Boot stages typically use the same address.
1095 source "common/spl/Kconfig"
1097 config IMAGE_SIGN_INFO
1102 Enable image_sign_info helper functions.
1106 config SPL_IMAGE_SIGN_INFO
1111 Enable image_sign_info helper functions in SPL.