diff options
| author | Gregor Herburger <[email protected]> | 2026-04-13 17:24:54 +0200 |
|---|---|---|
| committer | Tom Rini <[email protected]> | 2026-04-22 14:23:49 -0600 |
| commit | e973fa5115e40f93bb1425db5b1cc1f3d9b8047d (patch) | |
| tree | dd802fea63d671edf6ae2bcd28d4fab68e15defa | |
| parent | 2c8fdd7aea1d3c6c380ea5b5080147dc7fe9c38f (diff) | |
cli: flush stdin before enabling cli
Currently there is no possibility to flush stdin after autocommands are
executed. If in the bootcmd the stdin is changed, e.g. from nulldev to
serial, it could happen that junk characters sit in the fifo and appear
on the cli.
Add a option to clear stdin before starting the CLI.
Signed-off-by: Gregor Herburger <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
| -rw-r--r-- | cmd/Kconfig | 8 | ||||
| -rw-r--r-- | common/cli.c | 4 |
2 files changed, 12 insertions, 0 deletions
diff --git a/cmd/Kconfig b/cmd/Kconfig index 9b8a13c3446..3fd791f3e4b 100644 --- a/cmd/Kconfig +++ b/cmd/Kconfig @@ -47,6 +47,14 @@ config HUSH_SELECTABLE default y if HUSH_OLD_PARSER && HUSH_MODERN_PARSER endmenu +config CMDLINE_FLUSH_STDIN + bool "Enable flushing input before starting cli" + help + When this option is enabled the stdin buffer will be flushed before + starting the CLI. This is useful when stdin is changed during boot + (e.g. from nulldev to serial) and junk characters may be pending + in the buffer. + config CMDLINE_EDITING bool "Enable command line editing" default y diff --git a/common/cli.c b/common/cli.c index 4694a35cd0e..bcc7264d51a 100644 --- a/common/cli.c +++ b/common/cli.c @@ -295,6 +295,10 @@ err: void cli_loop(void) { bootstage_mark(BOOTSTAGE_ID_ENTER_CLI_LOOP); + + if (IS_ENABLED(CONFIG_CMDLINE_FLUSH_STDIN)) + console_flush_stdin(); + #if CONFIG_IS_ENABLED(HUSH_PARSER) if (gd->flags & GD_FLG_HUSH_MODERN_PARSER) parse_and_run_file(); |