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 accumated 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 but passing BOOTSTAGE_ID_ALLOC 16 as the ID. 17 18 Calls to show_boot_progress() wil 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 microsecond, 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 somes 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 somes 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 somes 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 somes 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 somes 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 somes 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 173config CONSOLE_RECORD 174 bool "Console recording" 175 help 176 This provides a way to record console output (and provide console 177 input) through cirular buffers. This is mostly useful for testing. 178 Console output is recorded even when the console is silent. 179 To enable console recording, call console_record_reset_enable() 180 from your code. 181 182config CONSOLE_RECORD_OUT_SIZE 183 hex "Output buffer size" 184 depends on CONSOLE_RECORD 185 default 0x400 if CONSOLE_RECORD 186 help 187 Set the size of the console output buffer. When this fills up, no 188 more data will be recorded until some is removed. The buffer is 189 allocated immediately after the malloc() region is ready. 190 191config CONSOLE_RECORD_IN_SIZE 192 hex "Input buffer size" 193 depends on CONSOLE_RECORD 194 default 0x100 if CONSOLE_RECORD 195 help 196 Set the size of the console input buffer. When this contains data, 197 tstc() and getc() will use this in preference to real device input. 198 The buffer is allocated immediately after the malloc() region is 199 ready. 200 201config SYS_NO_FLASH 202 bool "Disable support for parallel NOR flash" 203 default n 204 help 205 This option is used to disable support for parallel NOR flash. 206