MIPS: Cavium: Add EDAC support.

Drivers for EDAC on Cavium.  Supported subsystems are:

 o CPU primary caches.  These are parity protected only, so only error
   reporting.
 o Second level cache - ECC protected, provides SECDED.
 o Memory: ECC / SECDEC if used with suitable DRAM modules.  The driver will
   will only initialize if ECC is enabled on a system so is safe to run on
   non-ECC memory.
 o PCI: Parity error reporting

Since it is very hard to test this sort of code the implementation is very
conservative and uses polling where possible for now.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Reviewed-by: Borislav Petkov <borislav.petkov@amd.com>

1 files changed, 29 insertions, 1 deletions

diff --git a/arch/mips/cavium-octeon/setup.c b/arch/mips/cavium-octeon/setup.c
index 04dd8ff0e0d8..60ed700a956d 100644
--- a/arch/mips/cavium-octeon/setup.c
+++ b/arch/mips/cavium-octeon/setup.c
@@ -4,9 +4,11 @@
  * for more details.
  *
  * Copyright (C) 2004-2007 Cavium Networks
- * Copyright (C) 2008 Wind River Systems
+ * Copyright (C) 2008, 2009 Wind River Systems
+ *   written by Ralf Baechle <ralf@linux-mips.org>
  */
 #include <linux/init.h>
+#include <linux/kernel.h>
 #include <linux/console.h>
 #include <linux/delay.h>
 #include <linux/export.h>
@@ -821,3 +823,29 @@ void __init device_tree_init(void)
         }
         unflatten_device_tree();
 }
+
+static char *edac_device_names[] = {
+        "co_l2c_edac",
+        "co_lmc_edac",
+        "co_pc_edac",
+};
+
+static int __init edac_devinit(void)
+{
+        struct platform_device *dev;
+        int i, err = 0;
+        char *name;
+
+        for (i = 0; i < ARRAY_SIZE(edac_device_names); i++) {
+                name = edac_device_names[i];
+                dev = platform_device_register_simple(name, -1, NULL, 0);
+                if (IS_ERR(dev)) {
+                        pr_err("Registation of %s failed!\n", name);
+                        err = PTR_ERR(dev);
+                }
+        }
+
+        return err;
+}
+
+device_initcall(edac_devinit);