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.
21 config BOOTSTAGE_REPORT
22 bool "Display a detailed boot timing report before booting the OS"
25 Enable output of a boot time report just before the OS is booted.
26 This shows how long it took U-Boot to go through each stage of the
27 boot process. The report looks something like this:
29 Timer summary in microseconds:
32 3,575,678 3,575,678 board_init_f start
33 3,575,695 17 arch_cpu_init A9
34 3,575,777 82 arch_cpu_init done
35 3,659,598 83,821 board_init_r start
36 3,910,375 250,777 main_loop
37 29,916,167 26,005,792 bootm_start
38 30,361,327 445,160 start_kernel
40 config BOOTSTAGE_USER_COUNT
41 hex "Number of boot ID numbers available for user use"
44 This is the number of available user bootstage records.
45 Each time you call bootstage_mark(BOOTSTAGE_ID_ALLOC, ...)
46 a new ID will be allocated from this stash. If you exceed
47 the limit, recording will stop.
50 bool "Store boot timing information in the OS device tree"
53 Stash the bootstage information in the FDT. A root 'bootstage'
54 node is created with each bootstage id as a child. Each child
55 has a 'name' property and either 'mark' containing the
56 mark time in microseconds, or 'accum' containing the
57 accumulated time for that bootstage id in microseconds.
62 name = "board_init_f";
71 Code in the Linux kernel can find this in /proc/devicetree.
73 config BOOTSTAGE_STASH
74 bool "Stash the boot timing information in memory before booting OS"
77 Some OSes do not support device tree. Bootstage can instead write
78 the boot timing information in a binary format at a given address.
79 This happens through a call to bootstage_stash(), typically in
80 the CPU's cleanup_before_linux() function. You can use the
81 'bootstage stash' and 'bootstage unstash' commands to do this on
84 config BOOTSTAGE_STASH_ADDR
85 hex "Address to stash boot timing information"
88 Provide an address which will not be overwritten by the OS when it
89 starts, so that it can read this information when ready.
91 config BOOTSTAGE_STASH_SIZE
92 hex "Size of boot timing stash region"
95 This should be large enough to hold the bootstage stash. A value of
96 4096 (4KiB) is normally plenty.
103 bool "Support for booting from NOR flash"
106 Enabling this will make a U-Boot binary that is capable of being
107 booted via NOR. In this case we will enable certain pinmux early
108 as the ROM only partially sets up pinmux. We also default to using
112 bool "Support for booting from NAND flash"
115 Enabling this will make a U-Boot binary that is capable of being
116 booted via NAND flash. This is not a must, some SoCs need this,
120 bool "Support for booting from ONENAND"
123 Enabling this will make a U-Boot binary that is capable of being
124 booted via ONENAND. This is not a must, some SoCs need this,
128 bool "Support for booting from QSPI flash"
131 Enabling this will make a U-Boot binary that is capable of being
132 booted via QSPI flash. This is not a must, some SoCs need this,
136 bool "Support for booting from SATA"
139 Enabling this will make a U-Boot binary that is capable of being
140 booted via SATA. This is not a must, some SoCs need this,
144 bool "Support for booting from SD/EMMC"
147 Enabling this will make a U-Boot binary that is capable of being
148 booted via SD/EMMC. This is not a must, some SoCs need this,
152 bool "Support for booting from SPI flash"
155 Enabling this will make a U-Boot binary that is capable of being
156 booted via SPI flash. This is not a must, some SoCs need this,
166 prompt "Environment Device"
167 default ENV_IS_IN_MMC if ARCH_SUNXI
170 bool "Environment in an MMC device"
173 Define this if you have an MMC device which you want to use for the
176 config ENV_IS_IN_NAND
177 bool "Environment in a NAND device"
180 Define this if you have a NAND device which you want to use for the
184 bool "Environment in a UBI volume"
186 depends on CMD_MTDPARTS
188 Define this if you have a UBI volume which you want to use for the
191 config ENV_IS_NOWHERE
192 bool "Environment is not stored"
194 Define this if you don't want to or can't have an environment stored
200 hex "Environment Offset"
201 depends on !ENV_IS_IN_UBI
202 depends on !ENV_IS_NOWHERE
203 default 0x88000 if ARCH_SUNXI
205 Offset from the start of the device (or partition)
208 hex "Environment Size"
209 depends on !ENV_IS_NOWHERE
210 default 0x20000 if ARCH_SUNXI
212 Size of the environment storage area
215 string "UBI partition name"
216 depends on ENV_IS_IN_UBI
218 MTD partition containing the UBI device
220 config ENV_UBI_VOLUME
221 string "UBI volume name"
222 depends on ENV_IS_IN_UBI
224 Name of the volume that you want to store the environment in.
231 int "delay in seconds before automatically booting"
235 Delay before automatically running bootcmd;
236 set to 0 to autoboot with no delay, but you can stop it by key input.
237 set to -1 to disable autoboot.
238 set to -2 to autoboot with no delay and not check for abort
240 See doc/README.autoboot for details.
247 This is the library functionality to provide a text-based menu of
248 choices for the user to make choices with.
250 config CONSOLE_RECORD
251 bool "Console recording"
253 This provides a way to record console output (and provide console
254 input) through circular buffers. This is mostly useful for testing.
255 Console output is recorded even when the console is silent.
256 To enable console recording, call console_record_reset_enable()
259 config CONSOLE_RECORD_OUT_SIZE
260 hex "Output buffer size"
261 depends on CONSOLE_RECORD
262 default 0x400 if CONSOLE_RECORD
264 Set the size of the console output buffer. When this fills up, no
265 more data will be recorded until some is removed. The buffer is
266 allocated immediately after the malloc() region is ready.
268 config CONSOLE_RECORD_IN_SIZE
269 hex "Input buffer size"
270 depends on CONSOLE_RECORD
271 default 0x100 if CONSOLE_RECORD
273 Set the size of the console input buffer. When this contains data,
274 tstc() and getc() will use this in preference to real device input.
275 The buffer is allocated immediately after the malloc() region is
279 string "Board specific string to be added to uboot version string"
281 This options adds the board specific name to u-boot version.
283 config SILENT_CONSOLE
284 bool "Support a silent console"
286 This option allows the console to be silenced, meaning that no
287 output will appear on the console devices. This is controlled by
288 setting the environment vaariable 'silent' to a non-empty value.
289 Note this also silences the console when booting Linux.
291 When the console is set up, the variable is checked, and the
292 GD_FLG_SILENT flag is set. Changing the environment variable later
293 will update the flag.
295 config SILENT_U_BOOT_ONLY
296 bool "Only silence the U-Boot console"
297 depends on SILENT_CONSOLE
299 Normally when the U-Boot console is silenced, Linux's console is
300 also silenced (assuming the board boots into Linux). This option
301 allows the linux console to operate normally, even if U-Boot's
304 config SILENT_CONSOLE_UPDATE_ON_SET
305 bool "Changes to the 'silent' environment variable update immediately"
306 depends on SILENT_CONSOLE
307 default y if SILENT_CONSOLE
309 When the 'silent' environment variable is changed, update the
310 console silence flag immediately. This allows 'setenv' to be used
311 to silence or un-silence the console.
313 The effect is that any change to the variable will affect the
316 config SILENT_CONSOLE_UPDATE_ON_RELOC
317 bool "Allow flags to take effect on relocation"
318 depends on SILENT_CONSOLE
320 In some cases the environment is not available until relocation
321 (e.g. NAND). This option makes the value of the 'silent'
322 environment variable take effect at relocation.
324 config PRE_CONSOLE_BUFFER
325 bool "Buffer characters before the console is available"
327 Prior to the console being initialised (i.e. serial UART
328 initialised etc) all console output is silently discarded.
329 Defining CONFIG_PRE_CONSOLE_BUFFER will cause U-Boot to
330 buffer any console messages prior to the console being
331 initialised to a buffer. The buffer is a circular buffer, so
332 if it overflows, earlier output is discarded.
334 Note that this is not currently supported in SPL. It would be
335 useful to be able to share the pre-console buffer with SPL.
337 config PRE_CON_BUF_SZ
338 int "Sets the size of the pre-console buffer"
339 depends on PRE_CONSOLE_BUFFER
342 The size of the pre-console buffer affects how much console output
343 can be held before it overflows and starts discarding earlier
344 output. Normally there is very little output at this early stage,
345 unless debugging is enabled, so allow enough for ~10 lines of
348 This is a useful feature if you are using a video console and
349 want to see the full boot output on the console. Without this
350 option only the post-relocation output will be displayed.
352 config PRE_CON_BUF_ADDR
353 hex "Address of the pre-console buffer"
354 depends on PRE_CONSOLE_BUFFER
355 default 0x2f000000 if ARCH_SUNXI && MACH_SUN9I
356 default 0x4f000000 if ARCH_SUNXI && !MACH_SUN9I
358 This sets the start address of the pre-console buffer. This must
359 be in available memory and is accessed before relocation and
360 possibly before DRAM is set up. Therefore choose an address
363 We should consider removing this option and allocating the memory
364 in board_init_f_init_reserve() instead.
367 bool "Enable console multiplexing"
368 default y if DM_VIDEO || VIDEO || LCD
370 This allows multiple devices to be used for each console 'file'.
371 For example, stdout can be set to go to serial and video.
372 Similarly, stdin can be set to come from serial and keyboard.
373 Input can be provided from either source. Console multiplexing
374 adds a small amount of size to U-Boot. Changes to the environment
375 variables stdout, stdin and stderr will take effect immediately.
377 config SYS_CONSOLE_IS_IN_ENV
378 bool "Select console devices from the environment"
379 default y if CONSOLE_MUX
381 This allows multiple input/output devices to be set at boot time.
382 For example, if stdout is set to "serial,video" then output will
383 be sent to both the serial and video devices on boot. The
384 environment variables can be updated after boot to change the
385 input/output devices.
387 config SYS_CONSOLE_OVERWRITE_ROUTINE
388 bool "Allow board control over console overwriting"
390 If this is enabled, and the board-specific function
391 overwrite_console() returns 1, the stdin, stderr and stdout are
392 switched to the serial port, else the settings in the environment
393 are used. If this is not enabled, the console will not be switched
396 config SYS_CONSOLE_ENV_OVERWRITE
397 bool "Update environment variables during console init"
399 The console environment variables (stdout, stdin, stderr) can be
400 used to determine the correct console devices on start-up. This
401 option writes the console devices to these variables on console
402 start-up (after relocation). This causes the environment to be
403 updated to match the console devices actually chosen.
405 config SYS_CONSOLE_INFO_QUIET
406 bool "Don't display the console devices on boot"
408 Normally U-Boot displays the current settings for stdout, stdin
409 and stderr on boot when the post-relocation console is set up.
410 Enable this option to supress this output. It can be obtained by
411 calling stdio_print_current_devices() from board code.
413 config SYS_STDIO_DEREGISTER
414 bool "Allow deregistering stdio devices"
415 default y if USB_KEYBOARD
417 Generally there is no need to deregister stdio devices since they
418 are never deactivated. But if a stdio device is used which can be
419 removed (for example a USB keyboard) then this option can be
420 enabled to ensure this is handled correctly.
424 config DEFAULT_FDT_FILE
425 string "Default fdt file"
427 This option is used to set the default fdt file to boot OS.
429 config VERSION_VARIABLE
430 bool "add U-Boot environment variable vers"
433 If this variable is defined, an environment variable
434 named "ver" is created by U-Boot showing the U-Boot
435 version as printed by the "version" command.
436 Any change to this variable will be reverted at the
439 config BOARD_LATE_INIT
442 Sometimes board require some initialization code that might
443 require once the actual init done, example saving board specific env,
444 boot-modes etc. which eventually done at late.
446 So this config enable the late init code with the help of board_late_init
447 function which should defined on respective boards.
449 config DISPLAY_CPUINFO
450 bool "Display information about the CPU during start up"
451 default y if ARM || NIOS2 || X86 || XTENSA || MPC5xxx
453 Display information about the CPU that U-Boot is running on
454 when U-Boot starts up. The function print_cpuinfo() is called
457 config DISPLAY_BOARDINFO
458 bool "Display information about the board during start up"
459 default y if ARM || M68K || MIPS || PPC || XTENSA
461 Display information about the board that U-Boot is running on
462 when U-Boot starts up. The board function checkboard() is called
465 menu "Start-up hooks"
467 config ARCH_EARLY_INIT_R
468 bool "Call arch-specific init soon after relocation"
471 With this option U-Boot will call arch_early_init_r() soon after
472 relocation. Driver model is running by this point, and the cache
473 is on. Note that board_early_init_r() is called first, if
474 enabled. This can be used to set up architecture-specific devices.
476 config ARCH_MISC_INIT
477 bool "Call arch-specific init after relocation, when console is ready"
479 With this option U-Boot will call arch_misc_init() after
480 relocation to allow miscellaneous arch-dependent initialisation
481 to be performed. This function should be defined by the board
482 and will be called after the console is set up, after relocaiton.
484 config BOARD_EARLY_INIT_F
485 bool "Call board-specific init before relocation"
488 Some boards need to perform initialisation as soon as possible
489 after boot. With this option, U-Boot calls board_early_init_f()
490 after driver model is ready in the pre-relocation init sequence.
491 Note that the normal serial console is not yet set up, but the
492 debug UART will be available if enabled.
496 source "common/spl/Kconfig"