This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / arch / sh64 / lib / panic.c

diff --git a/arch/sh64/lib/panic.c b/arch/sh64/lib/panic.c
new file mode 100644 (file)
index 0000000..c9eb1cb
--- /dev/null
+++ b/arch/sh64/lib/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 (;;) ;
+
+}