m68k: early parameter support

Add early parameter support and convert current users to it.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 7 insertions, 4 deletions

diff --git a/arch/m68k/sun3x/prom.c b/arch/m68k/sun3x/prom.c
index f23d4255a6fa..48f8eb7b1565 100644
--- a/arch/m68k/sun3x/prom.c
+++ b/arch/m68k/sun3x/prom.c
@@ -73,8 +73,6 @@ void sun3x_reboot(void)
         (*romvec->pv_reboot)("vmlinux");
 }
 
-extern char m68k_debug_device[];
-
 static void sun3x_prom_write(struct console *co, const char *s,
                              unsigned int count)
 {
@@ -119,13 +117,18 @@ void sun3x_prom_init(void)
          * XXX this is futile since we restore the vbr first - oops
          */
         vectors[VEC_TRAP14] = sun3x_prom_abort;
+}
 
+static int __init sun3x_debug_setup(char *arg)
+{
         /* If debug=prom was specified, start the debug console */
-
-        if (!strcmp(m68k_debug_device, "prom"))
+        if (MACH_IS_SUN3X && !strcmp(arg, "prom"))
                 register_console(&sun3x_debug);
+        return 0;
 }
 
+early_param("debug", sun3x_debug_setup);
+
 /* some prom functions to export */
 int prom_getintdefault(int node, char *property, int deflt)
 {