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common: add AUTOBOOT_FLUSH_STDIN option
authorSteffen Jaeckel <jaeckel-floss@eyet-services.de>
Thu, 8 Jul 2021 13:57:38 +0000 (15:57 +0200)
committerTom Rini <trini@konsulko.com>
Fri, 23 Jul 2021 17:36:20 +0000 (13:36 -0400)
commitd199c3ab1c3afa7a17259f4045516f5fbfaaa446
treee41c639f587b76f04213be0825a89ce5815589fftree | snapshot
parent6c0ce6d3ca273f12e1cb4018144bee8e6131d30dcommit | diff
common: add AUTOBOOT_FLUSH_STDIN option

The key-sequence based unlock mechanisms are sensitive to junk symbols
that could have been sent to stdin and are still waiting to be retrieved.
Enabling this option will read all symbols off stdin before displaying the
autoboot prompt (and starting to read the password from stdin).

Signed-off-by: Steffen Jaeckel <jaeckel-floss@eyet-services.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
common/Kconfig.boot diff | blob | history
common/autoboot.c diff | blob | history
My U-Boot fork