2001-10-26 Victor V. Vengerov <vvv@oktet.ru>

	* New BSP for MCF5206eLITE evaluation board BSP.
	* ChangeLog, README, bsp_specs, configure.ac, console/console.c,
	console/.cvsignore, i2c/i2c.c, i2c/i2cdrv.c, i2c/.cvsignore,
	include/bsp.h, include/bspopts.h.in, include/coverhd.h,
	include/ds1307.h, include/i2c.h, include/i2cdrv.h, include/nvram.h,
	include/.cvsignore, nvram/nvram.c, nvram/.cvsignore, start/start.S,
	start/.cvsignore, startup/bspclean.c, startup/bspstart.c,
	startup/gdbinit, startup/init5206e.c, startup/linkcmds,
	startup/linkcmds.flash, startup/.cvsignore, times, tod/ds1307.c,
	tod/todcfg.c, tod/.cvsignore, tools/.cvsignore, tools/configure.ac,
	tools/runtest, tools/changes, wrapup/.cvsignore, .cvsignore:
	New files.

1 files changed, 177 insertions, 0 deletions

diff --git a/c/src/lib/libbsp/m68k/mcf5206elite/nvram/nvram.c b/c/src/lib/libbsp/m68k/mcf5206elite/nvram/nvram.c
new file mode 100644
index 0000000000..ea084a728d
--- /dev/null
+++ b/c/src/lib/libbsp/m68k/mcf5206elite/nvram/nvram.c
@@ -0,0 +1,177 @@
+/* 
+ * DS1307-based Non-Volatile memory device driver
+ *
+ * DS1307 chip is a I2C Real-Time Clock. It contains 56 bytes of
+ * non-volatile RAM storage. This driver provide file-like interface to
+ * this memory.
+ *
+ * Copyright (C) 2000 OKTET Ltd., St.-Petersburg, Russia
+ * Author: Victor V. Vengerov <vvv@oktet.ru>
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ *
+ * http://www.OARcorp.com/rtems/license.html.
+ *
+ * @(#) $Id$
+ */
+
+#include <rtems.h>
+#include <rtems/libio.h>
+#include <errno.h>
+#include <bsp.h>
+#include <nvram.h>
+#include <i2c.h>
+#include <ds1307.h>
+
+
+/* nvram_driver_initialize --
+ *     Non-volatile memory device driver initialization.
+ */
+rtems_device_driver
+nvram_driver_initialize(rtems_device_major_number major,
+                        rtems_device_minor_number minor,
+                        void *arg)
+{
+    rtems_status_code sc;
+    i2c_message_status status;
+    i2c_bus_number bus = DS1307_I2C_BUS_NUMBER;
+    i2c_address    addr = DS1307_I2C_ADDRESS;
+    int try = 0;
+    do {
+        status = i2c_wrbyte(bus, addr, 0);
+        if (status == I2C_NO_DEVICE)
+            break;
+        try++;
+    } while ((try < 15) && (status != I2C_SUCCESSFUL));
+
+    if (status == I2C_SUCCESSFUL)
+    {
+        sc = rtems_io_register_name("/dev/nvram", major, 0);
+        if (sc != RTEMS_SUCCESSFUL)
+        {
+            errno = EIO;
+            return RTEMS_UNSATISFIED;
+        }
+        else
+            return RTEMS_SUCCESSFUL;
+    }
+    else
+    {
+        errno = ENODEV;
+        return RTEMS_UNSATISFIED;
+    }
+}
+
+/* nvram_driver_open --
+ *     Non-volatile memory device driver open primitive.
+ */
+rtems_device_driver
+nvram_driver_open(rtems_device_major_number major,
+                  rtems_device_minor_number minor,
+                  void *arg)
+{
+    return RTEMS_SUCCESSFUL;
+}
+
+/* nvram_driver_close --
+ *     Non-volatile memory device driver close primitive.
+ */
+rtems_device_driver
+nvram_driver_close(rtems_device_major_number major,
+                   rtems_device_minor_number minor,
+                   void *arg)
+{
+    return RTEMS_SUCCESSFUL;
+}
+
+/* nvram_driver_read --
+ *     Non-volatile memory device driver read primitive.
+ */
+rtems_device_driver
+nvram_driver_read(rtems_device_major_number major,
+                  rtems_device_minor_number minor,
+                  void *arg)
+{
+    rtems_libio_rw_args_t *args = arg;
+    unsigned32 count;
+    i2c_bus_number bus = DS1307_I2C_BUS_NUMBER;
+    i2c_address    addr = DS1307_I2C_ADDRESS;
+    i2c_message_status status;
+    if (args->offset >= DS1307_NVRAM_SIZE)
+    {
+        count = 0;
+    }
+    else if (args->offset + args->count >= DS1307_NVRAM_SIZE)
+    {
+        count = DS1307_NVRAM_SIZE - args->offset;
+    }
+    else
+    {
+        count = args->count;
+    }
+    if (count > 0)
+    {
+        int try = 0;
+        do {
+            status = i2c_wbrd(bus, addr, DS1307_NVRAM_START + args->offset,
+                              args->buffer, count);
+            try++;
+        } while ((try < 15) && (status != I2C_SUCCESSFUL));
+        if (status != I2C_SUCCESSFUL)
+        {
+            errno = EIO;
+            return RTEMS_UNSATISFIED;
+        }
+    }
+    args->bytes_moved = count;
+    return RTEMS_SUCCESSFUL;
+}
+
+/* nvram_driver_write --
+ *     Non-volatile memory device driver write primitive.
+ */
+rtems_device_driver
+nvram_driver_write(rtems_device_major_number major,
+                   rtems_device_minor_number minor,
+                   void *arg)
+{
+    rtems_libio_rw_args_t *args = arg;
+    unsigned32 count;
+    i2c_bus_number bus = DS1307_I2C_BUS_NUMBER;
+    i2c_address    addr = DS1307_I2C_ADDRESS;
+    i2c_message_status status;
+    
+    if (args->offset >= DS1307_NVRAM_SIZE)
+    {
+        count = 0;
+    }
+    else if (args->offset + args->count >= DS1307_NVRAM_SIZE)
+    {
+        count = DS1307_NVRAM_SIZE - args->offset;
+    }
+    else
+    {
+        count = args->count;
+    }
+    if (count > 0)
+    {
+        int try = 0;
+        do {
+            rtems_unsigned8 buf[DS1307_NVRAM_SIZE + 1];
+            buf[0] = DS1307_NVRAM_START + args->offset;
+            memcpy(buf+1, args->buffer, count);
+            status = i2c_write(bus, addr, buf, count+1);
+            try++;
+        } while ((try < 15) && (status != I2C_SUCCESSFUL));
+        if (status != I2C_SUCCESSFUL)
+        {
+            errno = EIO;
+            return RTEMS_UNSATISFIED;
+        }
+    }
+    args->bytes_moved = count;
+    return RTEMS_SUCCESSFUL;
+}
+
+ 
\ No newline at end of file