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
30 config BOOTSTAGE_REPORT
31 bool "Display a detailed boot timing report before booting the OS"
34 Enable output of a boot time report just before the OS is booted.
35 This shows how long it took U-Boot to go through each stage of the
36 boot process. The report looks something like this:
38 Timer summary in microseconds:
41 3,575,678 3,575,678 board_init_f start
42 3,575,695 17 arch_cpu_init A9
43 3,575,777 82 arch_cpu_init done
44 3,659,598 83,821 board_init_r start
45 3,910,375 250,777 main_loop
46 29,916,167 26,005,792 bootm_start
47 30,361,327 445,160 start_kernel
49 config BOOTSTAGE_RECORD_COUNT
50 int "Number of boot stage records to store"
53 This is the size of the bootstage record list and is the maximum
54 number of bootstage records that can be recorded.
56 config SPL_BOOTSTAGE_RECORD_COUNT
57 int "Number of boot stage records to store for SPL"
60 This is the size of the bootstage record list and is the maximum
61 number of bootstage records that can be recorded.
64 bool "Store boot timing information in the OS device tree"
67 Stash the bootstage information in the FDT. A root 'bootstage'
68 node is created with each bootstage id as a child. Each child
69 has a 'name' property and either 'mark' containing the
70 mark time in microseconds, or 'accum' containing the
71 accumulated time for that bootstage id in microseconds.
76 name = "board_init_f";
85 Code in the Linux kernel can find this in /proc/devicetree.
87 config BOOTSTAGE_STASH
88 bool "Stash the boot timing information in memory before booting OS"
91 Some OSes do not support device tree. Bootstage can instead write
92 the boot timing information in a binary format at a given address.
93 This happens through a call to bootstage_stash(), typically in
94 the CPU's cleanup_before_linux() function. You can use the
95 'bootstage stash' and 'bootstage unstash' commands to do this on
98 config BOOTSTAGE_STASH_ADDR
99 hex "Address to stash boot timing information"
102 Provide an address which will not be overwritten by the OS when it
103 starts, so that it can read this information when ready.
105 config BOOTSTAGE_STASH_SIZE
106 hex "Size of boot timing stash region"
109 This should be large enough to hold the bootstage stash. A value of
110 4096 (4KiB) is normally plenty.
117 bool "Support for booting from NOR flash"
120 Enabling this will make a U-Boot binary that is capable of being
121 booted via NOR. In this case we will enable certain pinmux early
122 as the ROM only partially sets up pinmux. We also default to using
126 bool "Support for booting from NAND flash"
130 Enabling this will make a U-Boot binary that is capable of being
131 booted via NAND flash. This is not a must, some SoCs need this,
135 bool "Support for booting from ONENAND"
139 Enabling this will make a U-Boot binary that is capable of being
140 booted via ONENAND. This is not a must, some SoCs need this,
144 bool "Support for booting from QSPI flash"
147 Enabling this will make a U-Boot binary that is capable of being
148 booted via QSPI flash. This is not a must, some SoCs need this,
152 bool "Support for booting from SATA"
155 Enabling this will make a U-Boot binary that is capable of being
156 booted via SATA. This is not a must, some SoCs need this,
160 bool "Support for booting from SD/EMMC"
163 Enabling this will make a U-Boot binary that is capable of being
164 booted via SD/EMMC. This is not a must, some SoCs need this,
168 bool "Support for booting from SPI flash"
171 Enabling this will make a U-Boot binary that is capable of being
172 booted via SPI flash. This is not a must, some SoCs need this,
178 int "delay in seconds before automatically booting"
182 Delay before automatically running bootcmd;
183 set to 0 to autoboot with no delay, but you can stop it by key input.
184 set to -1 to disable autoboot.
185 set to -2 to autoboot with no delay and not check for abort
187 If this value is >= 0 then it is also used for the default delay
188 before starting the default entry in bootmenu. If it is < 0 then
189 a default value of 10s is used.
191 See doc/README.autoboot for details.
194 bool "Enable boot arguments"
196 Provide boot arguments to bootm command. Boot arguments are specified
197 in CONFIG_BOOTARGS option. Enable this option to be able to specify
198 CONFIG_BOOTARGS string. If this option is disabled, CONFIG_BOOTARGS
199 will be undefined and won't take any space in U-Boot image.
202 string "Boot arguments"
203 depends on USE_BOOTARGS
205 This can be used to pass arguments to the bootm command. The value of
206 CONFIG_BOOTARGS goes into the environment value "bootargs". Note that
207 this value will also override the "chosen" node in FDT blob.
209 config USE_BOOTCOMMAND
210 bool "Enable a default value for bootcmd"
212 Provide a default value for the bootcmd entry in the environment. If
213 autoboot is enabled this is what will be run automatically. Enable
214 this option to be able to specify CONFIG_BOOTCOMMAND as a string. If
215 this option is disabled, CONFIG_BOOTCOMMAND will be undefined and
216 won't take any space in U-Boot image.
219 string "bootcmd value"
220 depends on USE_BOOTCOMMAND
221 default "run distro_bootcmd" if DISTRO_DEFAULTS
223 This is the string of commands that will be used as bootcmd and if
224 AUTOBOOT is set, automatically run.
231 This is the library functionality to provide a text-based menu of
232 choices for the user to make choices with.
234 config CONSOLE_RECORD
235 bool "Console recording"
237 This provides a way to record console output (and provide console
238 input) through circular buffers. This is mostly useful for testing.
239 Console output is recorded even when the console is silent.
240 To enable console recording, call console_record_reset_enable()
243 config CONSOLE_RECORD_OUT_SIZE
244 hex "Output buffer size"
245 depends on CONSOLE_RECORD
246 default 0x400 if CONSOLE_RECORD
248 Set the size of the console output buffer. When this fills up, no
249 more data will be recorded until some is removed. The buffer is
250 allocated immediately after the malloc() region is ready.
252 config CONSOLE_RECORD_IN_SIZE
253 hex "Input buffer size"
254 depends on CONSOLE_RECORD
255 default 0x100 if CONSOLE_RECORD
257 Set the size of the console input buffer. When this contains data,
258 tstc() and getc() will use this in preference to real device input.
259 The buffer is allocated immediately after the malloc() region is
262 config DISABLE_CONSOLE
263 bool "Add functionality to disable console completely"
265 Disable console (in & out).
268 string "Board specific string to be added to uboot version string"
270 This options adds the board specific name to u-boot version.
277 All Messages with a loglevel smaller than the console loglevel will
278 be compiled in. The loglevels are defined as follows:
280 0 (KERN_EMERG) system is unusable
281 1 (KERN_ALERT) action must be taken immediately
282 2 (KERN_CRIT) critical conditions
283 3 (KERN_ERR) error conditions
284 4 (KERN_WARNING) warning conditions
285 5 (KERN_NOTICE) normal but significant condition
286 6 (KERN_INFO) informational
287 7 (KERN_DEBUG) debug-level messages
293 config SILENT_CONSOLE
294 bool "Support a silent console"
296 This option allows the console to be silenced, meaning that no
297 output will appear on the console devices. This is controlled by
298 setting the environment vaariable 'silent' to a non-empty value.
299 Note this also silences the console when booting Linux.
301 When the console is set up, the variable is checked, and the
302 GD_FLG_SILENT flag is set. Changing the environment variable later
303 will update the flag.
305 config SILENT_U_BOOT_ONLY
306 bool "Only silence the U-Boot console"
307 depends on SILENT_CONSOLE
309 Normally when the U-Boot console is silenced, Linux's console is
310 also silenced (assuming the board boots into Linux). This option
311 allows the linux console to operate normally, even if U-Boot's
314 config SILENT_CONSOLE_UPDATE_ON_SET
315 bool "Changes to the 'silent' environment variable update immediately"
316 depends on SILENT_CONSOLE
317 default y if SILENT_CONSOLE
319 When the 'silent' environment variable is changed, update the
320 console silence flag immediately. This allows 'setenv' to be used
321 to silence or un-silence the console.
323 The effect is that any change to the variable will affect the
326 config SILENT_CONSOLE_UPDATE_ON_RELOC
327 bool "Allow flags to take effect on relocation"
328 depends on SILENT_CONSOLE
330 In some cases the environment is not available until relocation
331 (e.g. NAND). This option makes the value of the 'silent'
332 environment variable take effect at relocation.
334 config PRE_CONSOLE_BUFFER
335 bool "Buffer characters before the console is available"
337 Prior to the console being initialised (i.e. serial UART
338 initialised etc) all console output is silently discarded.
339 Defining CONFIG_PRE_CONSOLE_BUFFER will cause U-Boot to
340 buffer any console messages prior to the console being
341 initialised to a buffer. The buffer is a circular buffer, so
342 if it overflows, earlier output is discarded.
344 Note that this is not currently supported in SPL. It would be
345 useful to be able to share the pre-console buffer with SPL.
347 config PRE_CON_BUF_SZ
348 int "Sets the size of the pre-console buffer"
349 depends on PRE_CONSOLE_BUFFER
352 The size of the pre-console buffer affects how much console output
353 can be held before it overflows and starts discarding earlier
354 output. Normally there is very little output at this early stage,
355 unless debugging is enabled, so allow enough for ~10 lines of
358 This is a useful feature if you are using a video console and
359 want to see the full boot output on the console. Without this
360 option only the post-relocation output will be displayed.
362 config PRE_CON_BUF_ADDR
363 hex "Address of the pre-console buffer"
364 depends on PRE_CONSOLE_BUFFER
365 default 0x2f000000 if ARCH_SUNXI && MACH_SUN9I
366 default 0x4f000000 if ARCH_SUNXI && !MACH_SUN9I
368 This sets the start address of the pre-console buffer. This must
369 be in available memory and is accessed before relocation and
370 possibly before DRAM is set up. Therefore choose an address
373 We should consider removing this option and allocating the memory
374 in board_init_f_init_reserve() instead.
377 bool "Enable console multiplexing"
378 default y if DM_VIDEO || VIDEO || LCD
380 This allows multiple devices to be used for each console 'file'.
381 For example, stdout can be set to go to serial and video.
382 Similarly, stdin can be set to come from serial and keyboard.
383 Input can be provided from either source. Console multiplexing
384 adds a small amount of size to U-Boot. Changes to the environment
385 variables stdout, stdin and stderr will take effect immediately.
387 config SYS_CONSOLE_IS_IN_ENV
388 bool "Select console devices from the environment"
389 default y if CONSOLE_MUX
391 This allows multiple input/output devices to be set at boot time.
392 For example, if stdout is set to "serial,video" then output will
393 be sent to both the serial and video devices on boot. The
394 environment variables can be updated after boot to change the
395 input/output devices.
397 config SYS_CONSOLE_OVERWRITE_ROUTINE
398 bool "Allow board control over console overwriting"
400 If this is enabled, and the board-specific function
401 overwrite_console() returns 1, the stdin, stderr and stdout are
402 switched to the serial port, else the settings in the environment
403 are used. If this is not enabled, the console will not be switched
406 config SYS_CONSOLE_ENV_OVERWRITE
407 bool "Update environment variables during console init"
409 The console environment variables (stdout, stdin, stderr) can be
410 used to determine the correct console devices on start-up. This
411 option writes the console devices to these variables on console
412 start-up (after relocation). This causes the environment to be
413 updated to match the console devices actually chosen.
415 config SYS_CONSOLE_INFO_QUIET
416 bool "Don't display the console devices on boot"
418 Normally U-Boot displays the current settings for stdout, stdin
419 and stderr on boot when the post-relocation console is set up.
420 Enable this option to supress this output. It can be obtained by
421 calling stdio_print_current_devices() from board code.
423 config SYS_STDIO_DEREGISTER
424 bool "Allow deregistering stdio devices"
425 default y if USB_KEYBOARD
427 Generally there is no need to deregister stdio devices since they
428 are never deactivated. But if a stdio device is used which can be
429 removed (for example a USB keyboard) then this option can be
430 enabled to ensure this is handled correctly.
437 bool "Enable logging support"
440 This enables support for logging of status and debug messages. These
441 can be displayed on the console, recorded in a memory buffer, or
442 discarded if not needed. Logging supports various categories and
446 bool "Enable logging support in SPL"
448 This enables support for logging of status and debug messages. These
449 can be displayed on the console, recorded in a memory buffer, or
450 discarded if not needed. Logging supports various categories and
454 int "Maximum log level to record"
458 This selects the maximum log level that will be recorded. Any value
459 higher than this will be ignored. If possible log statements below
460 this level will be discarded at build time. Levels:
471 config SPL_LOG_MAX_LEVEL
472 int "Maximum log level to record in SPL"
476 This selects the maximum log level that will be recorded. Any value
477 higher than this will be ignored. If possible log statements below
478 this level will be discarded at build time. Levels:
490 bool "Allow log output to the console"
494 Enables a log driver which writes log records to the console.
495 Generally the console is the serial port or LCD display. Only the
496 log message is shown - other details like level, category, file and
497 line number are omitted.
499 config LOG_SPL_CONSOLE
500 bool "Allow log output to the console in SPL"
504 Enables a log driver which writes log records to the console.
505 Generally the console is the serial port or LCD display. Only the
506 log message is shown - other details like level, category, file and
507 line number are omitted.
510 bool "Provide a test for logging"
514 This enables a 'log test' command to test logging. It is normally
515 executed from a pytest and simply outputs logging information
516 in various different ways to test that the logging system works
517 correctly with varoius settings.
519 config LOG_ERROR_RETURN
520 bool "Log all functions which return an error"
523 When an error is returned in U-Boot it is sometimes difficult to
524 figure out the root cause. For eaxmple, reading from SPI flash may
525 fail due to a problem in the SPI controller or due to the flash part
526 not returning the expected information. This option changes
527 log_ret() to log any errors it sees. With this option disabled,
530 You can add log_ret() to all functions which return an error code.
534 config SUPPORT_RAW_INITRD
535 bool "Enable raw initrd images"
537 Note, defining the SUPPORT_RAW_INITRD allows user to supply
538 kernel with raw initrd images. The syntax is slightly different, the
539 address of the initrd must be augmented by it's size, in the following
540 format: "<initrd address>:<initrd size>".
542 config DEFAULT_FDT_FILE
543 string "Default fdt file"
545 This option is used to set the default fdt file to boot OS.
548 bool "Execute Misc Init"
549 default y if ARCH_KEYSTONE || ARCH_SUNXI || MPC85xx
550 default y if ARCH_OMAP2PLUS && !AM33XX
552 Enabling this option calls 'misc_init_r' function
554 config VERSION_VARIABLE
555 bool "add U-Boot environment variable vers"
558 If this variable is defined, an environment variable
559 named "ver" is created by U-Boot showing the U-Boot
560 version as printed by the "version" command.
561 Any change to this variable will be reverted at the
564 config BOARD_LATE_INIT
565 bool "Execute Board late init"
567 Sometimes board require some initialization code that might
568 require once the actual init done, example saving board specific env,
569 boot-modes etc. which eventually done at late.
571 So this config enable the late init code with the help of board_late_init
572 function which should defined on respective boards.
574 config DISPLAY_CPUINFO
575 bool "Display information about the CPU during start up"
576 default y if ARC|| ARM || NIOS2 || X86 || XTENSA || M68K
578 Display information about the CPU that U-Boot is running on
579 when U-Boot starts up. The function print_cpuinfo() is called
582 config DISPLAY_BOARDINFO
583 bool "Display information about the board during early start up"
584 default y if ARC || ARM || M68K || MIPS || PPC || SANDBOX || XTENSA
586 Display information about the board that U-Boot is running on
587 when U-Boot starts up. The board function checkboard() is called
590 config DISPLAY_BOARDINFO_LATE
591 bool "Display information about the board during late start up"
593 Display information about the board that U-Boot is running on after
594 the relocation phase. The board function checkboard() is called to do
597 menu "Start-up hooks"
599 config ARCH_EARLY_INIT_R
600 bool "Call arch-specific init soon after relocation"
602 With this option U-Boot will call arch_early_init_r() soon after
603 relocation. Driver model is running by this point, and the cache
604 is on. Note that board_early_init_r() is called first, if
605 enabled. This can be used to set up architecture-specific devices.
607 config ARCH_MISC_INIT
608 bool "Call arch-specific init after relocation, when console is ready"
610 With this option U-Boot will call arch_misc_init() after
611 relocation to allow miscellaneous arch-dependent initialisation
612 to be performed. This function should be defined by the board
613 and will be called after the console is set up, after relocaiton.
615 config BOARD_EARLY_INIT_F
616 bool "Call board-specific init before relocation"
618 Some boards need to perform initialisation as soon as possible
619 after boot. With this option, U-Boot calls board_early_init_f()
620 after driver model is ready in the pre-relocation init sequence.
621 Note that the normal serial console is not yet set up, but the
622 debug UART will be available if enabled.
624 config BOARD_EARLY_INIT_R
625 bool "Call board-specific init after relocation"
627 Some boards need to perform initialisation as directly after
628 relocation. With this option, U-Boot calls board_early_init_r()
629 in the post-relocation init sequence.
631 config LAST_STAGE_INIT
632 bool "Call board-specific as last setup step"
634 Some boards need to perform initialisation immediately before control
635 is passed to the command-line interpreter (e.g. for initializations
636 that depend on later phases in the init sequence). With this option,
637 U-Boot calls last_stage_init() before the command-line interpreter is
642 menu "Security support"
645 bool # "Support hashing API (SHA1, SHA256, etc.)"
647 This provides a way to hash data in memory using various supported
648 algorithms (such as SHA1, MD5, CRC32). The API is defined in hash.h
649 and the algorithms it supports are defined in common/hash.c. See
650 also CMD_HASH for command-line access.
653 bool "Build Android Verified Boot operations"
654 depends on LIBAVB && FASTBOOT
655 depends on PARTITION_UUIDS
657 This option enables compilation of bootloader-dependent operations,
658 used by Android Verified Boot 2.0 library (libavb). Includes:
659 * Helpers to process strings in order to build OS bootargs.
660 * Helpers to access MMC, similar to drivers/fastboot/fb_mmc.c.
661 * Helpers to alloc/init/free avb ops.
665 menu "Update support"
668 bool "Auto-update using fitImage via TFTP"
671 This option allows performing update of NOR with data in fitImage
674 config UPDATE_TFTP_CNT_MAX
675 int "The number of connection retries during auto-update"
677 depends on UPDATE_TFTP
679 config UPDATE_TFTP_MSEC_MAX
680 int "Delay in mSec to wait for the TFTP server during auto-update"
682 depends on UPDATE_TFTP
686 source "common/spl/Kconfig"