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SubjectBUG/PATCH: Unable to specify console=ttyX where X != 0
The serial_console.txt file implies that you can specify other vt's
beside tty0 to use as a console using the console= kernel parameter.
However, if you specify any ttyX it always goes to tty0. Closer
examination shows that when the console is registered it is ignoring the
specified tty.

Basically, I want all the kernel messages to go to tty2 so that I can
have a nice clean user interaction on tty1, but still allow access to
kernel messages on tty2.

The following patch sets up the correct tty to send the messages to
based on the console= parameter and initializes the virtual terminal.

enjoy

ben--- console.c.old Sun Aug 12 10:02:17 2001
+++ console.c Wed Aug 22 16:17:11 2001
@@ -2369,6 +2369,21 @@

DECLARE_TASKLET_DISABLED(console_tasklet, console_softint, 0);

+void __init con_setup_vt(unsigned int currcons)
+{
+ if (vc_cons[currcons].d) return;
+
+ vc_cons[currcons].d = (struct vc_data *)
+ alloc_bootmem(sizeof(struct vc_data));
+ vt_cons[currcons] = (struct vt_struct *)
+ alloc_bootmem(sizeof(struct vt_struct));
+ visual_init(currcons, 1);
+ screenbuf = (unsigned short *) alloc_bootmem(screenbuf_size);
+ kmalloced = 0;
+ vc_init(currcons, video_num_lines, video_num_columns,
+ currcons || !sw->con_save_screen);
+}
+
void __init con_init(void)
{
const char *display_desc = NULL;
@@ -2427,15 +2442,7 @@
* kmalloc is not running yet - we use the bootmem allocator.
*/
for (currcons = 0; currcons < MIN_NR_CONSOLES; currcons++) {
- vc_cons[currcons].d = (struct vc_data *)
- alloc_bootmem(sizeof(struct vc_data));
- vt_cons[currcons] = (struct vt_struct *)
- alloc_bootmem(sizeof(struct vt_struct));
- visual_init(currcons, 1);
- screenbuf = (unsigned short *) alloc_bootmem(screenbuf_size);
- kmalloced = 0;
- vc_init(currcons, video_num_lines, video_num_columns,
- currcons || !sw->con_save_screen);
+ con_setup_vt(currcons);
}
currcons = fg_console = 0;
master_display_fg = vc_cons[currcons].d;
@@ -2452,6 +2459,11 @@

#ifdef CONFIG_VT_CONSOLE
register_console(&vt_console_driver);
+ if (vt_console_driver.index > 0 &&
+ vt_console_driver.index < MAX_NR_CONSOLES) {
+ con_setup_vt(vt_console_driver.index-1);
+ kmsg_redirect = vt_console_driver.index;
+ }
#endif

tasklet_enable(&console_tasklet);
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