Date: Mon, 26 Nov 2001 21:25:45 +0100 From: Guido van Rooij <guido@gvr.org> To: freebsd-hackers@freebsd.org Subject: review: single step thoruggh the probe messages Message-ID: <20011126212545.A13597@gvr.gvr.org>
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Attached some patches that add a -p functionality to the boot process.
If booting with -p, every line printed during probing happens only
after one presses a key.
This was usefull to see the probe messages of a system that completely
hung (read: no scroll-back functionslity left) after probing.
-Guido
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--- sbin/reboot/boot_i386.8.orig Mon Nov 26 16:13:29 2001
+++ sbin/reboot/boot_i386.8 Sun Nov 25 16:46:57 2001
@@ -220,6 +220,8 @@
and
.Fl h
options are automatically set.
+.It Fl p
+pause after each attached device during the device probing phase.
.It Fl r
use the statically configured default for the device containing the
root file system
--- sys/boot/i386/libi386/bootinfo.c.orig Mon Nov 26 16:13:16 2001
+++ sys/boot/i386/libi386/bootinfo.c Sat Nov 24 00:10:23 2001
@@ -97,6 +97,9 @@
case 'h':
howto |= RB_SERIAL;
break;
+ case 'p':
+ howto |= RB_PAUSE;
+ break;
case 'r':
howto |= RB_DFLTROOT;
break;
--- sys/sys/reboot.h.orig Mon Nov 26 16:13:05 2001
+++ sys/sys/reboot.h Sat Nov 24 00:08:11 2001
@@ -61,6 +61,7 @@
#define RB_GDB 0x8000 /* use GDB remote debugger instead of DDB */
#define RB_MUTE 0x10000 /* Come up with the console muted */
#define RB_SELFTEST 0x20000 /* don't boot to normal operation, do selftest */
+#define RB_PAUSE 0x40000 /* pause after each line during autoconfig */
#define RB_BOOTINFO 0x80000000 /* have `struct bootinfo *' arg */
--- sys/kern/tty_cons.c.orig Mon Nov 26 16:12:31 2001
+++ sys/kern/tty_cons.c Mon Nov 26 15:58:30 2001
@@ -98,6 +98,7 @@
static d_close_t *cn_phys_close; /* physical device close function */
static d_open_t *cn_phys_open; /* physical device open function */
struct consdev *cn_tab; /* physical console device info */
+static u_char cninit_notyetfinished=1; /* zero if we left autoconfigure */
CONS_DRIVER(cons, NULL, NULL, NULL, NULL, NULL, NULL, NULL);
@@ -175,6 +176,7 @@
}
cn_dev_t = cn_tab->cn_dev;
cn_udev_t = dev2udev(cn_dev_t);
+ cninit_notyetfinished = 0;
}
static void
@@ -443,6 +445,12 @@
if (c == '\n')
(*cn_tab->cn_putc)(cn_tab->cn_dev, '\r');
(*cn_tab->cn_putc)(cn_tab->cn_dev, c);
+ if ((c == '\n') && (boothowto & RB_PAUSE) &&
+ (cninit_notyetfinished)) {
+ printf("<pause>\r");
+ (void)cngetc();
+ printf(" \r");
+ }
}
}
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