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, 0 insertions, 20 deletions

diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 0471e843b6c5..54c606f680b3 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -858,26 +858,6 @@ int check_legacy_ioport(unsigned long base_port)
 }
 EXPORT_SYMBOL(check_legacy_ioport);
 
-#ifdef CONFIG_XMON
-static int __init early_xmon(char *p)
-{
-        /* ensure xmon is enabled */
-        if (p) {
-                if (strncmp(p, "on", 2) == 0)
-                        xmon_init(1);
-                if (strncmp(p, "off", 3) == 0)
-                        xmon_init(0);
-                if (strncmp(p, "early", 5) != 0)
-                        return 0;
-        }
-        xmon_init(1);
-        debugger(NULL);
-
-        return 0;
-}
-early_param("xmon", early_xmon);
-#endif
-
 void cpu_die(void)
 {
         if (ppc_md.cpu_die)