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authorDan Williams <dan.j.williams@intel.com>2009-09-08 17:55:21 -0700
committerDan Williams <dan.j.williams@intel.com>2009-09-08 17:55:21 -0700
commitbbb20089a3275a19e475dbc21320c3742e3ca423 (patch)
tree216fdc1cbef450ca688135c5b8969169482d9a48 /arch/sh/boards/mach-cayman/panic.c
parent3e48e656903e9fd8bc805c6a2c4264d7808d315b (diff)
parent657a77fa7284d8ae28dfa48f1dc5d919bf5b2843 (diff)
Merge branch 'dmaengine' into async-tx-next
Conflicts: crypto/async_tx/async_xor.c drivers/dma/ioat/dma_v2.h drivers/dma/ioat/pci.c drivers/md/raid5.c
Diffstat (limited to 'arch/sh/boards/mach-cayman/panic.c')
-rw-r--r--arch/sh/boards/mach-cayman/panic.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/arch/sh/boards/mach-cayman/panic.c b/arch/sh/boards/mach-cayman/panic.c
new file mode 100644
index 000000000000..d1e67306d07c
--- /dev/null
+++ b/arch/sh/boards/mach-cayman/panic.c
@@ -0,0 +1,49 @@
+/*
+ * 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 <linux/io.h>
+#include <cpu/registers.h>
+
+/* THIS IS A PHYSICAL ADDRESS */
+#define HDSP2534_ADDR (0x04002100)
+
+static void poor_mans_delay(void)
+{
+ int i;
+
+ for (i = 0; i < 2500000; i++)
+ cpu_relax();
+}
+
+static void show_value(unsigned long x)
+{
+ int i;
+ unsigned nibble;
+ for (i = 0; i < 8; i++) {
+ nibble = ((x >> (i * 4)) & 0xf);
+
+ __raw_writeb(nibble + ((nibble > 9) ? 55 : 48),
+ HDSP2534_ADDR + 0xe0 + ((7 - i) << 2));
+ }
+}
+
+void
+panic_handler(unsigned long panicPC, unsigned long panicSSR,
+ unsigned long panicEXPEVT)
+{
+ 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();
+ }
+}