vt: make the default cursor shape configurable

For embedded systems, the blinking cursor at startup time can be annoying
and unintended.  Add a new kernel parameter to change the default cursor
shape.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Cc: Daniel Mack <daniel@caiaq.de>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: David Newall <davidn@davidnewall.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index ab95d3ada5c7..c309515ae959 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -2729,6 +2729,11 @@ and is between 256 and 4096 characters. It is defined in the file
         vmpoff=         [KNL,S390] Perform z/VM CP command after power off.
                         Format: <command>
 
+        vt.cur_default= [VT] Default cursor shape.
+                        Format: 0xCCBBAA, where AA, BB, and CC are the same as
+                        the parameters of the <Esc>[?A;B;Cc escape sequence;
+                        see VGA-softcursor.txt. Default: 2 = underline.
+
         vt.default_blu= [VT]
                         Format: <blue0>,<blue1>,<blue2>,...,<blue15>
                         Change the default blue palette of the console.