Hello misc,
as I found out the kernel does not use the variable comdefaultrate,
which is set via the BOOTARG_CONSDEV struct passed to the kernel, but
the comconsrate variable while initializing the serial console. This is
initialized to B9600 via <sys/ttydefaults.h>, that explains the output I
am seeing. So IMHO assigning comdefaultrate the speed passed from
boot(8) is wrong and instead the rate should be assigned to comconsrate.
The patch below should make it more clear what I mean, it fixes my
problems with the serial console on amd64:
Index: machdep.c
===================================================================
RCS file: /var/cvs/src/sys/arch/amd64/amd64/machdep.c,v
retrieving revision 1.68
diff -u -p -r1.68 machdep.c
--- machdep.c 17 Mar 2008 23:17:24 -0000 1.68
+++ machdep.c 28 Mar 2008 14:55:07 -0000
@@ -1816,8 +1816,8 @@ getbootinfo(char *bootinfo, int bootinfo
(bios_consdev_t*)q->ba_arg;
#include "com.h"
#if NCOM > 0
- extern int comdefaultrate; /* ic/com.c */
- comdefaultrate = cdp->conspeed;
+ extern int comconsrate; /* ic/com.c */
+ comconsrate = cdp->conspeed;
#endif
#ifdef BOOTINFO_DEBUG
printf(" console 0x%x:%d",
Kind regards,
Markus
