patch-2.4.21 linux-2.4.21/arch/ppc/kernel/gen550_kgdb.c

• Lines: 85
• Date: 2003-06-13 07:51:31.000000000 -0700
• Orig file: linux-2.4.20/arch/ppc/kernel/gen550_kgdb.c
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.20/arch/ppc/kernel/gen550_kgdb.c linux-2.4.21/arch/ppc/kernel/gen550_kgdb.c
@@ -0,0 +1,84 @@
+/*
+ * arch/ppc/kernel/gen550_kgdb.c
+ *
+ * Generic 16550 kgdb support intended to be useful on a variety
+ * of platforms.  To enable this support, it is necessary to set
+ * the CONFIG_GEN550 option.  Any virtual mapping of the serial
+ * port(s) to be used can be accomplished by setting
+ * ppc_md.early_serial_map to a platform-specific mapping function.
+ *
+ * Adapted from ppc4xx_kgdb.c. 
+ *
+ * Matt Porter <mporter@mvista.com>
+ *
+ * Copyright 2002 MontaVista Software Inc.
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+
+#include <asm/machdep.h>
+
+extern unsigned long serial_init(int, void *);
+extern unsigned long serial_getc(unsigned long);
+extern unsigned long serial_putc(unsigned long, unsigned char);
+
+#if defined(CONFIG_KGDB_TTYS0)
+#define KGDB_PORT 0
+#elif defined(CONFIG_KGDB_TTYS1)
+#define KGDB_PORT 1
+#elif defined(CONFIG_KGDB_TTYS2)
+#define KGDB_PORT 2
+#elif defined(CONFIG_KGDB_TTYS3)
+#define KGDB_PORT 3
+#else
+#error "invalid kgdb_tty port"
+#endif
+
+static volatile unsigned int kgdb_debugport;
+
+void putDebugChar(unsigned char c)
+{
+	if (kgdb_debugport == 0)
+		kgdb_debugport = serial_init(KGDB_PORT, NULL);
+
+	serial_putc(kgdb_debugport, c);
+}
+
+int getDebugChar(void)
+{
+	if (kgdb_debugport == 0)
+		kgdb_debugport = serial_init(KGDB_PORT, NULL);
+
+	return(serial_getc(kgdb_debugport));
+}
+
+void kgdb_interruptible(int enable)
+{
+	return;
+}
+
+void putDebugString(char* str)
+{
+	while (*str != '\0') {
+		putDebugChar(*str);
+		str++;
+	}
+	putDebugChar('\r');
+	return;
+}
+
+void
+kgdb_map_scc(void)
+{
+	printk("kgdb init\n");
+	if (ppc_md.early_serial_map)
+		ppc_md.early_serial_map();
+	kgdb_debugport = serial_init(KGDB_PORT, NULL);
+}