powerpc: Simplify and clean up the xmon terminal I/O

This factors out the common bits of arch/powerpc/xmon/start_*.c into
a new nonstdio.c, and removes some stuff that was supposed to make
xmon's I/O routines somewhat stdio-like but was never used.

It also makes the parsing of the xmon= command line option common,
so that ppc32 can now use xmon={off,on,early} also.

Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 3 insertions, 8 deletions

diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c
index 3af2631e3fab..0fbc73f7f828 100644
--- a/arch/powerpc/kernel/setup_32.c
+++ b/arch/powerpc/kernel/setup_32.c
@@ -303,14 +303,9 @@ void __init setup_arch(char **cmdline_p)
                 pmac_feature_init();    /* New cool way */
 #endif
 
-#ifdef CONFIG_XMON
-        xmon_map_scc();
-        if (strstr(cmd_line, "xmon")) {
-                xmon_init(1);
-                debugger(NULL);
-        }
-#endif /* CONFIG_XMON */
-        if ( ppc_md.progress ) ppc_md.progress("setup_arch: enter", 0x3eab);
+#ifdef CONFIG_XMON_DEFAULT
+        xmon_init(1);
+#endif
 
 #if defined(CONFIG_KGDB)
         if (ppc_md.kgdb_map_scc)