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| author | Jan Janssen <medhefgo@web.de> | 2022-09-06 10:46:27 +0200 |
|---|---|---|
| committer | Jan Janssen <medhefgo@web.de> | 2022-09-07 12:55:55 +0200 |
| commit | 97f077df052c75224dcc73375bfaaa69af6a1c26 (patch) | |
| tree | e6b284581b54cc4501b4820b61b16f5285e19d92 /docs/BOOT_LOADER_INTERFACE.md | |
| parent | 28fda21c85d476defbf36a866e2d45729f790eba (diff) | |
| download | systemd-97f077df052c75224dcc73375bfaaa69af6a1c26.tar.gz | |
boot: Avoid magic values in timeout EFI vars
Diffstat (limited to 'docs/BOOT_LOADER_INTERFACE.md')
| -rw-r--r-- | docs/BOOT_LOADER_INTERFACE.md | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/docs/BOOT_LOADER_INTERFACE.md b/docs/BOOT_LOADER_INTERFACE.md index f7be50421c..fc9336085b 100644 --- a/docs/BOOT_LOADER_INTERFACE.md +++ b/docs/BOOT_LOADER_INTERFACE.md @@ -31,7 +31,11 @@ variables. All EFI variables use the vendor UUID * The EFI variable `LoaderConfigTimeout` contains the boot menu timeout currently in use. It may be modified both by the boot loader and by the host. The value should be formatted as numeric, NUL-terminated, decimal - string, in UTF-16. The time is specified in µs. + string, in UTF-16. The time is specified in seconds. A value of `menu-force` + will disable the timeout and show the menu indefinitely. If set to `0` or + `menu-hidden` the default entry is booted immediately without showing a menu. + The boot loader should provide a way to interrupt this by for example + listening for key presses for a brief moment before booting. * Similarly, the EFI variable `LoaderConfigTimeoutOneShot` contains a boot menu timeout for a single following boot. It is set by the OS in order to request |