2008-05-01 Chris Johns <chrisj@rtems.org>

	* libblock/include/rtems/nvdisk-sram.h,
	libblock/include/rtems/nvdisk.h,
	libblock/src/nvdisk-sram.c,
	libblock/src/nvdisk.c: New. A Non-volatile memory disk drive.
	* Makefile.am, preinstall.am, libblock/Makefile.am: Updated for
	the NV disk driver.

1 files changed, 64 insertions, 0 deletions

diff --git a/cpukit/libblock/src/nvdisk-sram.c b/cpukit/libblock/src/nvdisk-sram.c
new file mode 100644
index 0000000000..aa78689ec7
--- /dev/null
+++ b/cpukit/libblock/src/nvdisk-sram.c
@@ -0,0 +1,64 @@
+/*
+ *  $Id$
+ *
+ * RTEMS Project (http://www.rtems.org/)
+ *
+ * Copyright 2007 Chris Johns (chrisj@rtems.org)
+ */
+/**
+ * Provide SRAM support for the NV Disk.
+ */
+
+#include <stdio.h>
+#include <errno.h>
+
+#include <rtems.h>
+
+#include <rtems/nvdisk-sram.h>
+
+#ifndef NVDISK_SRAM_ERROR_TRACE
+#define NVDISK_SRAM_ERROR_TRACE (0)
+#endif
+
+static int
+rtems_nvdisk_sram_read (uint32_t device,
+                        uint32_t flags,
+                        uint32_t base, 
+                        uint32_t offset,
+                        void*    buffer,
+                        uint32_t size)
+{
+  memcpy (buffer, (char*) (base + offset), size);
+  return 0;
+}
+
+static int
+rtems_nvdisk_sram_write (uint32_t    device,
+                         uint32_t    flags,
+                         uint32_t    base, 
+                         uint32_t    offset,
+                         const void* buffer,
+                         uint32_t    size)
+{
+  memcpy ((char*) (base + offset), buffer, size);
+  return 0;
+}
+
+static int
+rtems_nvdisk_sram_verify (uint32_t    device,
+                          uint32_t    flags,
+                          uint32_t    base, 
+                          uint32_t    offset,
+                          const void* buffer,
+                          uint32_t    size)
+{
+  return memcmp ((char*) (base + offset), buffer, size) == 0 ? 0 : EIO;
+}
+
+
+const rtems_nvdisk_driver_handlers rtems_nvdisk_sram_handlers =
+{
+  read:   rtems_nvdisk_sram_read,
+  write:  rtems_nvdisk_sram_write,
+  verify: rtems_nvdisk_sram_verify
+};