tree bf99fa1818795e3cc56c1eb9fb72c8a333161569
parent 617d7b545b6fa555f47944a10b1a1b261491e3b9
author Simon Glass <sjg@chromium.org> 1696209201 -0600
committer Tom Rini <trini@konsulko.com> 1697053435 -0400

video: Support showing a cursor

Add rudimentary support for displaying a cursor on a vidconsole. This
helps the user to see where text is being entered.

The implementation so far is very simple: the cursor is just a vertical
bar of fixed width and cannot be erased. To erase the cursor, the text
must be redrawn over it.

This is good enough for expo but will need enhancement to be useful for
the command-line console. For example, it could save and restore the
area behind the cursor.

For now, enable this only for expo, to reduce code size.

Signed-off-by: Simon Glass <sjg@chromium.org>