1 files changed, 58 insertions, 0 deletions
diff --git a/arch/sh/lib64/panic.c b/arch/sh/lib64/panic.c
new file mode 100644
index 0000000..c9eb1cb
--- /dev/null
+++ b/arch/sh/lib64/panic.c
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2003  Richard Curnow, SuperH UK Limited
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/kernel.h>
+#include <asm/io.h>
+#include <asm/registers.h>
+
+/* THIS IS A PHYSICAL ADDRESS */
+#define HDSP2534_ADDR (0x04002100)
+
+#ifdef CONFIG_SH_CAYMAN
+
+static void poor_mans_delay(void)
+{
+	int i;
+	for (i = 0; i < 2500000; i++) {
+	}		/* poor man's delay */
+}
+
+static void show_value(unsigned long x)
+{
+	int i;
+	unsigned nibble;
+	for (i = 0; i < 8; i++) {
+		nibble = ((x >> (i * 4)) & 0xf);
+
+		ctrl_outb(nibble + ((nibble > 9) ? 55 : 48),
+			  HDSP2534_ADDR + 0xe0 + ((7 - i) << 2));
+	}
+}
+
+#endif
+
+void
+panic_handler(unsigned long panicPC, unsigned long panicSSR,
+	      unsigned long panicEXPEVT)
+{
+#ifdef CONFIG_SH_CAYMAN
+	while (1) {
+		/* This piece of code displays the PC on the LED display */
+		show_value(panicPC);
+		poor_mans_delay();
+		show_value(panicSSR);
+		poor_mans_delay();
+		show_value(panicEXPEVT);
+		poor_mans_delay();
+	}
+#endif
+
+	/* Never return from the panic handler */
+	for (;;) ;
+
+}