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-rw-r--r--arch/mn10300/kernel/mn10300-debug.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/arch/mn10300/kernel/mn10300-debug.c b/arch/mn10300/kernel/mn10300-debug.c
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index 00000000000..bd8196478cb
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+++ b/arch/mn10300/kernel/mn10300-debug.c
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+/* 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
+