1menu "Boot timing" 2 3config BOOTSTAGE 4 bool "Boot timing and reporting" 5 help 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. 13 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 16 as the ID. 17 18 Calls to show_boot_progress() will also result in log entries but 19 these will not have names. 20 21config BOOTSTAGE_REPORT 22 bool "Display a detailed boot timing report before booting the OS" 23 depends on BOOTSTAGE 24 help 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: 28 29 Timer summary in microseconds: 30 Mark Elapsed Stage 31 0 0 reset 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 39 40config BOOTSTAGE_USER_COUNT 41 hex "Number of boot ID numbers available for user use" 42 default 20 43 help 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. 48 49config BOOTSTAGE_FDT 50 bool "Store boot timing information in the OS device tree" 51 depends on BOOTSTAGE 52 help 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. 58 For example: 59 60 bootstage { 61 154 { 62 name = "board_init_f"; 63 mark = <3575678>; 64 }; 65 170 { 66 name = "lcd"; 67 accum = <33482>; 68 }; 69 }; 70 71 Code in the Linux kernel can find this in /proc/devicetree. 72 73config BOOTSTAGE_STASH 74 bool "Stash the boot timing information in memory before booting OS" 75 depends on BOOTSTAGE 76 help 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 82 the command line. 83 84config BOOTSTAGE_STASH_ADDR 85 hex "Address to stash boot timing information" 86 default 0 87 help 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. 90 91config BOOTSTAGE_STASH_SIZE 92 hex "Size of boot timing stash region" 93 default 4096 94 help 95 This should be large enough to hold the bootstage stash. A value of 96 4096 (4KiB) is normally plenty. 97 98endmenu 99 100menu "Boot media" 101 102config NOR_BOOT 103 bool "Support for booting from NOR flash" 104 depends on NOR 105 help 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 109 NOR for environment. 110 111config NAND_BOOT 112 bool "Support for booting from NAND flash" 113 default n 114 help 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, 117 some not. 118 119config ONENAND_BOOT 120 bool "Support for booting from ONENAND" 121 default n 122 help 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, 125 some not. 126 127config QSPI_BOOT 128 bool "Support for booting from QSPI flash" 129 default n 130 help 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, 133 some not. 134 135config SATA_BOOT 136 bool "Support for booting from SATA" 137 default n 138 help 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, 141 some not. 142 143config SD_BOOT 144 bool "Support for booting from SD/EMMC" 145 default n 146 help 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, 149 some not. 150 151config SPI_BOOT 152 bool "Support for booting from SPI flash" 153 default n 154 help 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, 157 some not. 158 159endmenu 160 161config BOOTDELAY 162 int "delay in seconds before automatically booting" 163 default 2 164 depends on AUTOBOOT 165 help 166 Delay before automatically running bootcmd; 167 set to 0 to autoboot with no delay, but you can stop it by key input. 168 set to -1 to disable autoboot. 169 set to -2 to autoboot with no delay and not check for abort 170 171 See doc/README.autoboot for details. 172 173menu "Console" 174 175config CONSOLE_RECORD 176 bool "Console recording" 177 help 178 This provides a way to record console output (and provide console 179 input) through circular buffers. This is mostly useful for testing. 180 Console output is recorded even when the console is silent. 181 To enable console recording, call console_record_reset_enable() 182 from your code. 183 184config CONSOLE_RECORD_OUT_SIZE 185 hex "Output buffer size" 186 depends on CONSOLE_RECORD 187 default 0x400 if CONSOLE_RECORD 188 help 189 Set the size of the console output buffer. When this fills up, no 190 more data will be recorded until some is removed. The buffer is 191 allocated immediately after the malloc() region is ready. 192 193config CONSOLE_RECORD_IN_SIZE 194 hex "Input buffer size" 195 depends on CONSOLE_RECORD 196 default 0x100 if CONSOLE_RECORD 197 help 198 Set the size of the console input buffer. When this contains data, 199 tstc() and getc() will use this in preference to real device input. 200 The buffer is allocated immediately after the malloc() region is 201 ready. 202 203config IDENT_STRING 204 string "Board specific string to be added to uboot version string" 205 help 206 This options adds the board specific name to u-boot version. 207 208config SILENT_CONSOLE 209 bool "Support a silent console" 210 help 211 This option allows the console to be silenced, meaning that no 212 output will appear on the console devices. This is controlled by 213 setting the environment vaariable 'silent' to a non-empty value. 214 Note this also silences the console when booting Linux. 215 216 When the console is set up, the variable is checked, and the 217 GD_FLG_SILENT flag is set. Changing the environment variable later 218 will update the flag. 219 220config SILENT_U_BOOT_ONLY 221 bool "Only silence the U-Boot console" 222 depends on SILENT_CONSOLE 223 help 224 Normally when the U-Boot console is silenced, Linux's console is 225 also silenced (assuming the board boots into Linux). This option 226 allows the linux console to operate normally, even if U-Boot's 227 is silenced. 228 229config SILENT_CONSOLE_UPDATE_ON_SET 230 bool "Changes to the 'silent' environment variable update immediately" 231 depends on SILENT_CONSOLE 232 default y if SILENT_CONSOLE 233 help 234 When the 'silent' environment variable is changed, update the 235 console silence flag immediately. This allows 'setenv' to be used 236 to silence or un-silence the console. 237 238 The effect is that any change to the variable will affect the 239 GD_FLG_SILENT flag. 240 241config SILENT_CONSOLE_UPDATE_ON_RELOC 242 bool "Allow flags to take effect on relocation" 243 depends on SILENT_CONSOLE 244 help 245 In some cases the environment is not available until relocation 246 (e.g. NAND). This option makes the value of the 'silent' 247 environment variable take effect at relocation. 248 249config PRE_CONSOLE_BUFFER 250 bool "Buffer characters before the console is available" 251 help 252 Prior to the console being initialised (i.e. serial UART 253 initialised etc) all console output is silently discarded. 254 Defining CONFIG_PRE_CONSOLE_BUFFER will cause U-Boot to 255 buffer any console messages prior to the console being 256 initialised to a buffer. The buffer is a circular buffer, so 257 if it overflows, earlier output is discarded. 258 259 Note that this is not currently supported in SPL. It would be 260 useful to be able to share the pre-console buffer with SPL. 261 262config PRE_CON_BUF_SZ 263 int "Sets the size of the pre-console buffer" 264 depends on PRE_CONSOLE_BUFFER 265 default 4096 266 help 267 The size of the pre-console buffer affects how much console output 268 can be held before it overflows and starts discarding earlier 269 output. Normally there is very little output at this early stage, 270 unless debugging is enabled, so allow enough for ~10 lines of 271 text. 272 273 This is a useful feature if you are using a video console and 274 want to see the full boot output on the console. Without this 275 option only the post-relocation output will be displayed. 276 277config PRE_CON_BUF_ADDR 278 hex "Address of the pre-console buffer" 279 depends on PRE_CONSOLE_BUFFER 280 default 0x2f000000 if ARCH_SUNXI && MACH_SUN9I 281 default 0x4f000000 if ARCH_SUNXI && !MACH_SUN9I 282 help 283 This sets the start address of the pre-console buffer. This must 284 be in available memory and is accessed before relocation and 285 possibly before DRAM is set up. Therefore choose an address 286 carefully. 287 288 We should consider removing this option and allocating the memory 289 in board_init_f_init_reserve() instead. 290 291config CONSOLE_MUX 292 bool "Enable console multiplexing" 293 default y if DM_VIDEO || VIDEO || LCD 294 help 295 This allows multiple devices to be used for each console 'file'. 296 For example, stdout can be set to go to serial and video. 297 Similarly, stdin can be set to come from serial and keyboard. 298 Input can be provided from either source. Console multiplexing 299 adds a small amount of size to U-Boot. Changes to the environment 300 variables stdout, stdin and stderr will take effect immediately. 301 302config SYS_CONSOLE_IS_IN_ENV 303 bool "Select console devices from the environment" 304 default y if CONSOLE_MUX 305 help 306 This allows multiple input/output devices to be set at boot time. 307 For example, if stdout is set to "serial,video" then output will 308 be sent to both the serial and video devices on boot. The 309 environment variables can be updated after boot to change the 310 input/output devices. 311 312config SYS_CONSOLE_OVERWRITE_ROUTINE 313 bool "Allow board control over console overwriting" 314 help 315 If this is enabled, and the board-specific function 316 overwrite_console() returns 1, the stdin, stderr and stdout are 317 switched to the serial port, else the settings in the environment 318 are used. If this is not enabled, the console will not be switched 319 to serial. 320 321config SYS_CONSOLE_ENV_OVERWRITE 322 bool "Update environment variables during console init" 323 help 324 The console environment variables (stdout, stdin, stderr) can be 325 used to determine the correct console devices on start-up. This 326 option writes the console devices to these variables on console 327 start-up (after relocation). This causes the environment to be 328 updated to match the console devices actually chosen. 329 330config SYS_CONSOLE_INFO_QUIET 331 bool "Don't display the console devices on boot" 332 help 333 Normally U-Boot displays the current settings for stdout, stdin 334 and stderr on boot when the post-relocation console is set up. 335 Enable this option to supress this output. It can be obtained by 336 calling stdio_print_current_devices() from board code. 337 338config SYS_STDIO_DEREGISTER 339 bool "Allow deregistering stdio devices" 340 default y if USB_KEYBOARD 341 help 342 Generally there is no need to deregister stdio devices since they 343 are never deactivated. But if a stdio device is used which can be 344 removed (for example a USB keyboard) then this option can be 345 enabled to ensure this is handled correctly. 346 347endmenu 348 349config DEFAULT_FDT_FILE 350 string "Default fdt file" 351 help 352 This option is used to set the default fdt file to boot OS. 353 354config SYS_NO_FLASH 355 bool "Disable support for parallel NOR flash" 356 default n 357 help 358 This option is used to disable support for parallel NOR flash. 359 360config VERSION_VARIABLE 361 bool "add U-Boot environment variable vers" 362 default n 363 help 364 If this variable is defined, an environment variable 365 named "ver" is created by U-Boot showing the U-Boot 366 version as printed by the "version" command. 367 Any change to this variable will be reverted at the 368 next reset. 369 370config DISPLAY_CPUINFO 371 bool "Display information about the CPU during start up" 372 default y if ARM || BLACKFIN || NIOS2 || X86 || XTENSA 373 help 374 Display information about the CPU that U-Boot is running on 375 when U-Boot starts up. The function print_cpuinfo() is called 376 to do this. 377 378config DISPLAY_BOARDINFO 379 bool "Display information about the board during start up" 380 default y if ARM || M68K || MIPS || PPC || SPARC || XTENSA 381 help 382 Display information about the board that U-Boot is running on 383 when U-Boot starts up. The board function checkboard() is called 384 to do this. 385 386source "common/spl/Kconfig" 387