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[src/trunk]: src/sys/arch/i386/stand Two changes for the i386 boot loader rel...
details: https://anonhg.NetBSD.org/src/rev/544f9bc128fd
branches: trunk
changeset: 788906:544f9bc128fd
user: he <he%NetBSD.org@localhost>
date: Sun Jul 28 08:50:09 2013 +0000
description:
Two changes for the i386 boot loader related to the boot menu which
can be defined in boot.cfg:
* Add a "menu" command which re-displays the menu and initiates
the timed countdown
* Use any default command defined in boot.cfg as default args
if the user runs "boot" with no arguments
This is useful in circumstances where you e.g. need to interrupt
the normal boot process to switch to serial console, and where
simply "boot netbsd" is no longer sufficient (e.g. as with install
media which needs the miniroot kernel module loaded).
diffstat:
sys/arch/i386/stand/boot/boot2.c | 30 ++++++++++++++-
sys/arch/i386/stand/lib/bootmenu.c | 74 ++++++++++++++++++++++++++-----------
sys/arch/i386/stand/lib/bootmenu.h | 3 +-
3 files changed, 82 insertions(+), 25 deletions(-)
diffs (195 lines):
diff -r e91be02d7e1b -r 544f9bc128fd sys/arch/i386/stand/boot/boot2.c
--- a/sys/arch/i386/stand/boot/boot2.c Sun Jul 28 06:12:45 2013 +0000
+++ b/sys/arch/i386/stand/boot/boot2.c Sun Jul 28 08:50:09 2013 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: boot2.c,v 1.58 2012/08/04 03:51:27 riastradh Exp $ */
+/* $NetBSD: boot2.c,v 1.59 2013/07/28 08:50:09 he Exp $ */
/*-
* Copyright (c) 2008, 2009 The NetBSD Foundation, Inc.
@@ -120,6 +120,9 @@
void command_boot(char *);
void command_dev(char *);
void command_consdev(char *);
+#ifndef SMALL
+void command_menu(char *);
+#endif
void command_modules(char *);
void command_multiboot(char *);
@@ -131,6 +134,9 @@
{ "boot", command_boot },
{ "dev", command_dev },
{ "consdev", command_consdev },
+#ifndef SMALL
+ { "menu", command_menu },
+#endif
{ "modules", command_modules },
{ "load", module_add },
{ "multiboot", command_multiboot },
@@ -394,6 +400,9 @@
"dev xd[N[x]]:\n"
"consdev {pc|com[0123]|com[0123]kbd|auto}\n"
"vesa {modenum|on|off|enabled|disabled|list}\n"
+#ifndef SMALL
+ "menu (reenters boot menu, if defined in boot.cfg)\n"
+#endif
"modules {on|off|enabled|disabled}\n"
"load {path_to_module}\n"
"multiboot [xdNx:][filename] [<args>]\n"
@@ -439,6 +448,10 @@
bootit(filename, howto, tell);
} else {
int i;
+
+#ifndef SMALL
+ bootdefault();
+#endif
for (i = 0; i < NUMNAMES; i++) {
bootit(names[i][0], howto, tell);
bootit(names[i][1], howto, tell);
@@ -504,6 +517,21 @@
printf("invalid console device.\n");
}
+#ifndef SMALL
+/* ARGSUSED */
+void
+command_menu(char *arg)
+{
+
+ if (bootconf.nummenu > 0) {
+ /* Does not return */
+ doboottypemenu();
+ } else {
+ printf("No menu defined in boot.cfg\n");
+ }
+}
+#endif /* !SMALL */
+
void
command_modules(char *arg)
{
diff -r e91be02d7e1b -r 544f9bc128fd sys/arch/i386/stand/lib/bootmenu.c
--- a/sys/arch/i386/stand/lib/bootmenu.c Sun Jul 28 06:12:45 2013 +0000
+++ b/sys/arch/i386/stand/lib/bootmenu.c Sun Jul 28 08:50:09 2013 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: bootmenu.c,v 1.10 2011/08/18 13:20:04 christos Exp $ */
+/* $NetBSD: bootmenu.c,v 1.11 2013/07/28 08:50:09 he Exp $ */
/*-
* Copyright (c) 2008 The NetBSD Foundation, Inc.
@@ -41,6 +41,8 @@
#define isnum(c) ((c) >= '0' && (c) <= '9')
+static void docommandchoice(int);
+
extern struct x86_boot_params boot_params;
extern const char bootprog_name[], bootprog_rev[], bootprog_kernrev[];
@@ -297,11 +299,57 @@
return choice;
}
+static void
+docommandchoice(int choice)
+{
+ char input[80], *ic, *oc;
+
+ ic = bootconf.command[choice];
+ /* Split command string at ; into separate commands */
+ do {
+ oc = input;
+ /* Look for ; separator */
+ for (; *ic && *ic != COMMAND_SEPARATOR; ic++)
+ *oc++ = *ic;
+ if (*input == '\0')
+ continue;
+ /* Strip out any trailing spaces */
+ oc--;
+ for (; *oc == ' ' && oc > input; oc--);
+ *++oc = '\0';
+ if (*ic == COMMAND_SEPARATOR)
+ ic++;
+ /* Stop silly command strings like ;;; */
+ if (*input != '\0')
+ docommand(input);
+ /* Skip leading spaces */
+ for (; *ic == ' '; ic++);
+ } while (*ic);
+}
+
+void
+bootdefault(void)
+{
+ int choice;
+ static int entered;
+
+ if (bootconf.nummenu > 0) {
+ if (entered) {
+ printf("default boot twice, skipping...\n");
+ return;
+ }
+ entered = 1;
+ choice = bootconf.def;
+ printf("command(s): %s\n", bootconf.command[choice]);
+ docommandchoice(choice);
+ }
+}
+
void
doboottypemenu(void)
{
int choice;
- char input[80], *ic, *oc;
+ char input[80];
printf("\n");
/* Display menu */
@@ -357,27 +405,7 @@
printf("type \"?\" or \"help\" for help.\n");
bootmenu(); /* does not return */
} else {
- ic = bootconf.command[choice];
- /* Split command string at ; into separate commands */
- do {
- oc = input;
- /* Look for ; separator */
- for (; *ic && *ic != COMMAND_SEPARATOR; ic++)
- *oc++ = *ic;
- if (*input == '\0')
- continue;
- /* Strip out any trailing spaces */
- oc--;
- for (; *oc == ' ' && oc > input; oc--);
- *++oc = '\0';
- if (*ic == COMMAND_SEPARATOR)
- ic++;
- /* Stop silly command strings like ;;; */
- if (*input != '\0')
- docommand(input);
- /* Skip leading spaces */
- for (; *ic == ' '; ic++);
- } while (*ic);
+ docommandchoice(choice);
}
}
diff -r e91be02d7e1b -r 544f9bc128fd sys/arch/i386/stand/lib/bootmenu.h
--- a/sys/arch/i386/stand/lib/bootmenu.h Sun Jul 28 06:12:45 2013 +0000
+++ b/sys/arch/i386/stand/lib/bootmenu.h Sun Jul 28 08:50:09 2013 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: bootmenu.h,v 1.2 2008/12/13 23:30:54 christos Exp $ */
+/* $NetBSD: bootmenu.h,v 1.3 2013/07/28 08:50:09 he Exp $ */
/*-
* Copyright (c) 2008 The NetBSD Foundation, Inc.
@@ -36,6 +36,7 @@
void parsebootconf(const char *);
void doboottypemenu(void);
+void bootdefault(void);
int atoi(const char *);
struct bootconf_def {
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