[PATCH] allow xmon=on,off,early

[Olaf Hering]

allow 'xmon' or 'xmon=early' to enter xmon very early during boot.
allow 'xmon=on' to just enable it, or 'xmon=off' to disable it.

Signed-off-by: Olaf Hering <olh at suse.de>

Index: linux-2.6.11-olh/arch/ppc64/kernel/setup.c
===================================================================
--- linux-2.6.11-olh.orig/arch/ppc64/kernel/setup.c
+++ linux-2.6.11-olh/arch/ppc64/kernel/setup.c
@@ -1365,6 +1365,12 @@ EXPORT_SYMBOL(check_legacy_ioport);
 static int __init early_xmon(char *p)
 {
 	/* ensure xmon is enabled */
+	if (p) {
+		if (strncmp(p, "on", 2) == 0)
+			xmon_init();
+		if (strncmp(p, "early", 5))
+			return 0;
+	}
 	xmon_init();
 	debugger(NULL);