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vt: make the default cursor shape configurable

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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>
This commit is contained in:
Clemens Ladisch 2009-12-15 16:45:39 -08:00 committed by Linus Torvalds
parent 135d5655dc
commit 9ea9a886b0
2 changed files with 10 additions and 2 deletions
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5
Documentation/kernel-parameters.txt
View File

@ -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. vmpoff= [KNL,S390] Perform z/VM CP command after power off.
Format: <command> 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] vt.default_blu= [VT]
Format: <blue0>,<blue1>,<blue2>,...,<blue15> Format: <blue0>,<blue1>,<blue2>,...,<blue15>
Change the default blue palette of the console. Change the default blue palette of the console.

7
drivers/char/vt.c
View File

@ -164,6 +164,9 @@ module_param(default_utf8, int, S_IRUGO | S_IWUSR);
int global_cursor_default = -1; int global_cursor_default = -1;
module_param(global_cursor_default, int, S_IRUGO | S_IWUSR); module_param(global_cursor_default, int, S_IRUGO | S_IWUSR);
static int cur_default = CUR_DEFAULT;
module_param(cur_default, int, S_IRUGO | S_IWUSR);
/* /*
* ignore_poke: don't unblank the screen when things are typed. This is * ignore_poke: don't unblank the screen when things are typed. This is
* mainly for the privacy of braille terminal users. * mainly for the privacy of braille terminal users.
@ -1636,7 +1639,7 @@ static void reset_terminal(struct vc_data *vc, int do_clear)
/* do not do set_leds here because this causes an endless tasklet loop /* do not do set_leds here because this causes an endless tasklet loop
when the keyboard hasn't been initialized yet */ when the keyboard hasn't been initialized yet */
vc->vc_cursor_type = CUR_DEFAULT; vc->vc_cursor_type = cur_default;
vc->vc_complement_mask = vc->vc_s_complement_mask; vc->vc_complement_mask = vc->vc_s_complement_mask;
default_attr(vc); default_attr(vc);
@ -1838,7 +1841,7 @@ static void do_con_trol(struct tty_struct *tty, struct vc_data *vc, int c)
if (vc->vc_par[0]) if (vc->vc_par[0])
vc->vc_cursor_type = vc->vc_par[0] | (vc->vc_par[1] << 8) | (vc->vc_par[2] << 16); vc->vc_cursor_type = vc->vc_par[0] | (vc->vc_par[1] << 8) | (vc->vc_par[2] << 16);
else else
vc->vc_cursor_type = CUR_DEFAULT; vc->vc_cursor_type = cur_default;
return; return;
} }
break; break;