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According to a Usenet posting forward to me by Jordan, there's

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at least one user out there who's system won't autoboot from the
serial console because of what sounds like 'phantom keystrokes'
making the timeout timer trip. I've tried to solve this by
adding an extra call to init_serial() right before the 'Boot:'
prompt is printed (done only if RB_SERIAL is set) to hopefully
make sure that the input buffer is clear. Unfortunately, the fellow
is in Germany and I haven't heard back from him yet. I haven't
been able to duplicate this problem on my hardware, so this is
a stab in the dark. At the very least, it shouldn't hurt anything.
This commit is contained in:
Bill Paul 1995-04-14 01:35:59 +00:00
parent 51564ceea8
commit 8a03631b28
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=7813
1 changed files with 7 additions and 1 deletions
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8
sys/i386/boot/biosboot/boot.c
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@ -24,7 +24,7 @@
* the rights to redistribute these changes. * the rights to redistribute these changes.
* *
* from: Mach, [92/04/03 16:51:14 rvb] * from: Mach, [92/04/03 16:51:14 rvb]
* $Id: boot.c,v 1.32 1995/01/28 03:51:39 davidg Exp $ * $Id: boot.c,v 1.33 1995/03/14 08:21:53 davidg Exp $
*/ */
@ -109,6 +109,12 @@ Use ? for file list or press Enter for defaults\n\n",
maj = (drive&0x80 ? 0 : 2); /* a good first bet */ maj = (drive&0x80 ? 0 : 2); /* a good first bet */
printf("Boot: "); printf("Boot: ");
/*
* Be paranoid and make doubly sure that the input
* buffer is empty.
*/
if (loadflags & RB_SERIAL)
init_serial();
getbootdev(&loadflags); getbootdev(&loadflags);
ret = openrd(); ret = openrd();
if (ret != 0) { if (ret != 0) {