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Diffstat (limited to 'qemu/roms/u-boot/doc/README.bootmenu')
| -rw-r--r-- | qemu/roms/u-boot/doc/README.bootmenu | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/qemu/roms/u-boot/doc/README.bootmenu b/qemu/roms/u-boot/doc/README.bootmenu deleted file mode 100644 index af22a139c..000000000 --- a/qemu/roms/u-boot/doc/README.bootmenu +++ /dev/null @@ -1,99 +0,0 @@ -/* - * (C) Copyright 2011-2012 Pali Rohár <pali.rohar@gmail.com> - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -ANSI terminal bootmenu command - -The "bootmenu" command uses U-Boot menu interfaces and provides -a simple mechanism for creating menus with different boot items. -The cursor keys "Up" and "Down" are used for navigation through -the items. Current active menu item is highlighted and can be -selected using the "Enter" key. The selection of the highlighted -menu entry invokes an U-Boot command (or a list of commands) -associated with this menu entry. - -The "bootmenu" command interprets ANSI escape sequencies, so -an ANSI terminal is required for proper menu rendering and item -selection. - -The assembling of the menu is done via a set of environment variables -"bootmenu_<num>" and "bootmenu_delay", i.e.: - - bootmenu_delay=<delay> - bootmenu_<num>="<title>=<commands>" - - <delay> is the autoboot delay in seconds, after which the first - menu entry will be selected automatically - - <num> is the boot menu entry number, starting from zero - - <title> is the text of the menu entry shown on the console - or on the boot screen - - <commands> are commands which will be executed when a menu - entry is selected - - (title and commands are separated by first appearance of '=' - character in the environment variable) - -First (optional) argument of the "bootmenu" command is a delay specifier -and it overrides the delay value defined by "bootmenu_delay" environment -variable. If the environment variable "bootmenu_delay" is not set or if -the argument of the "bootmenu" command is not specified, the default delay -will be CONFIG_BOOTDELAY. If delay is 0, no menu entries will be shown on -the console (or on the screen) and the command of the first menu entry will -be called immediately. If delay is less then 0, bootmenu will be shown and -autoboot will be disabled. - -Bootmenu always adds menu entry "U-Boot console" at the end of all menu -entries specified by environment variables. When selecting this entry -the bootmenu terminates and the usual U-Boot command prompt is presented -to the user. - -Example environment: - - setenv bootmenu_0 Boot 1. kernel=bootm 0x82000000 # Set first menu entry - setenv bootmenu_1 Boot 2. kernel=bootm 0x83000000 # Set second menu entry - setenv bootmenu_2 Reset board=reset # Set third menu entry - setenv bootmenu_3 U-Boot boot order=boot # Set fourth menu entry - bootmenu 20 # Run bootmenu with autoboot delay 20s - - -The above example will be rendered as below -(without decorating rectangle): - -┌──────────────────────────────────────────┐ -│ │ -│ *** U-Boot Boot Menu *** │ -│ │ -│ Boot 1. kernel │ -│ Boot 2. kernel │ -│ Reset board │ -│ U-Boot boot order │ -│ U-Boot console │ -│ │ -│ Hit any key to stop autoboot: 20 │ -│ Press UP/DOWN to move, ENTER to select │ -│ │ -└──────────────────────────────────────────┘ - -Selected menu entry will be highlighted - it will have inverted -background and text colors. - -To enable the "bootmenu" command add following definitions to the -board config file: - - #define CONFIG_CMD_BOOTMENU - #define CONFIG_MENU - -To run the bootmenu at startup add these additional definitions: - - #define CONFIG_AUTOBOOT_KEYED - #define CONFIG_BOOTDELAY 30 - #define CONFIG_MENU_SHOW - -When you intend to use the bootmenu on color frame buffer console, -make sure to additionally define CONFIG_CFB_CONSOLE_ANSI in the -board config file. |