diff -ur linux.old/arch/mips/kernel/head.S linux.dev/arch/mips/kernel/head.S
--- linux.old/arch/mips/kernel/head.S	2006-10-26 00:11:13.000000000 +0200
+++ linux.dev/arch/mips/kernel/head.S	2006-10-26 02:40:10.000000000 +0200
@@ -132,6 +132,8 @@
 
 	j kernel_entry
 	nop
+	nop
+EXPORT(_image_cmdline)
 
 	/*
 	 * Reserved space for exception handlers.
diff -ur linux.old/arch/mips/rb500/prom.c linux.dev/arch/mips/rb500/prom.c
--- linux.old/arch/mips/rb500/prom.c	2006-10-26 00:11:14.000000000 +0200
+++ linux.dev/arch/mips/rb500/prom.c	2006-10-26 02:40:46.000000000 +0200
@@ -128,6 +128,7 @@
 	/* FIXME: STUB */
 }
 
+extern char _image_cmdline;
 void __init prom_setup_cmdline(void){
 	char cmd_line[CL_SIZE];
 	char *cp;
@@ -163,6 +164,9 @@
 		strcpy(cp,prom_argv[i]);
 		cp+=strlen(prom_argv[i]);
 	}
+	*(cp++) = ' ';
+	strcpy(cp,&_image_cmdline);
+	cp += strlen(&_image_cmdline);
 	
 	i=strlen(arcs_cmdline);
 	if (i>0){