1 files changed, 58 insertions, 0 deletions

diff --git a/arch/mn10300/kernel/mn10300-debug.c b/arch/mn10300/kernel/mn10300-debug.c
new file mode 100644
index 000000000000..bd8196478cbc
--- /dev/null
+++ b/arch/mn10300/kernel/mn10300-debug.c
@@ -0,0 +1,58 @@
+/* Debugging stuff for the MN10300-based processors
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#include <linux/sched.h>
+#include <asm/serial-regs.h>
+
+#undef MN10300_CONSOLE_ON_SERIO
+
+/*
+ * write a string directly through one of the serial ports on-board the MN10300
+ */
+#ifdef MN10300_CONSOLE_ON_SERIO
+void debug_to_serial_mnser(const char *p, int n)
+{
+        char ch;
+
+        for (; n > 0; n--) {
+                ch = *p++;
+
+#if MN10300_CONSOLE_ON_SERIO == 0
+                while (SC0STR & (SC01STR_TBF)) continue;
+                SC0TXB = ch;
+                while (SC0STR & (SC01STR_TBF)) continue;
+                if (ch == 0x0a) {
+                        SC0TXB = 0x0d;
+                        while (SC0STR & (SC01STR_TBF)) continue;
+                }
+
+#elif MN10300_CONSOLE_ON_SERIO == 1
+                while (SC1STR & (SC01STR_TBF)) continue;
+                SC1TXB = ch;
+                while (SC1STR & (SC01STR_TBF)) continue;
+                if (ch == 0x0a) {
+                        SC1TXB = 0x0d;
+                        while (SC1STR & (SC01STR_TBF)) continue;
+                }
+
+#elif MN10300_CONSOLE_ON_SERIO == 2
+                while (SC2STR & (SC2STR_TBF)) continue;
+                SC2TXB = ch;
+                while (SC2STR & (SC2STR_TBF)) continue;
+                if (ch == 0x0a) {
+                        SC2TXB = 0x0d;
+                        while (SC2STR & (SC2STR_TBF)) continue;
+                }
+
+#endif
+        }
+}
+#endif
+