* Patch by Peter Ryser, 20 Feb 2004:

  Add support for the Xilinx ML300 platform

* Patch by Stephan Linz, 17 Feb 2004:
  Fix watchdog support for NIOS

* Patch by Josh Fryman, 16 Feb 2004:
  Fix byte-swapping for cfi_flash.c for different bus widths

* Patch by Jon Diekema, 14 Jeb 2004:
  Remove duplicate "FPGA Support" notes from the README file

1 files changed, 350 insertions, 0 deletions

diff --git a/board/xilinx/common/xversion.c b/board/xilinx/common/xversion.c
new file mode 100644
index 0000000..c8a6915
--- /dev/null
+++ b/board/xilinx/common/xversion.c
@@ -0,0 +1,350 @@
+/******************************************************************************
+*
+*     Author: Xilinx, Inc.
+*
+*
+*     This program is free software; you can redistribute it and/or modify it
+*     under the terms of the GNU General Public License as published by the
+*     Free Software Foundation; either version 2 of the License, or (at your
+*     option) any later version.
+*
+*
+*     XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" AS A
+*     COURTESY TO YOU. BY PROVIDING THIS DESIGN, CODE, OR INFORMATION AS
+*     ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, APPLICATION OR STANDARD,
+*     XILINX IS MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION IS FREE
+*     FROM ANY CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE FOR OBTAINING
+*     ANY THIRD PARTY RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION.
+*     XILINX EXPRESSLY DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO
+*     THE ADEQUACY OF THE IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY
+*     WARRANTIES OR REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM
+*     CLAIMS OF INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND
+*     FITNESS FOR A PARTICULAR PURPOSE.
+*
+*
+*     Xilinx hardware products are not intended for use in life support
+*     appliances, devices, or systems. Use in such applications is
+*     expressly prohibited.
+*
+*
+*     (c) Copyright 2002-2004 Xilinx Inc.
+*     All rights reserved.
+*
+*
+*     You should have received a copy of the GNU General Public License along
+*     with this program; if not, write to the Free Software Foundation, Inc.,
+*     675 Mass Ave, Cambridge, MA 02139, USA.
+*
+******************************************************************************/
+/*****************************************************************************
+*
+* This file contains the implementation of the XVersion component. This
+* component represents a version ID.  It is encapsulated within a component
+* so that it's type and implementation can change without affecting users of
+* it.
+*
+* The version is formatted as X.YYZ where X = 0 - 9, Y = 00 - 99, Z = a - z
+* X is the major revision, YY is the minor revision, and Z is the
+* compatability revision.
+*
+* Packed versions are also utilized for the configuration ROM such that
+* memory is minimized. A packed version consumes only 16 bits and is
+* formatted as follows.
+*
+* <pre>
+* Revision                  Range       Bit Positions
+*
+* Major Revision            0 - 9       Bits 15 - 12
+* Minor Revision            0 - 99      Bits 11 - 5
+* Compatability Revision    a - z       Bits 4 - 0
+</pre>
+*
+******************************************************************************/
+
+/***************************** Include Files *********************************/
+
+#include "xbasic_types.h"
+#include "xversion.h"
+
+/************************** Constant Definitions *****************************/
+
+/* the following constants define the masks and shift values to allow the
+ * revisions to be packed and unpacked, a packed version is packed into a 16
+ * bit value in the following format, XXXXYYYYYYYZZZZZ, where XXXX is the
+ * major revision, YYYYYYY is the minor revision, and ZZZZZ is the compatability
+ * revision
+ */
+#define XVE_MAJOR_SHIFT_VALUE       12
+#define XVE_MINOR_ONLY_MASK         0x0FE0
+#define XVE_MINOR_SHIFT_VALUE       5
+#define XVE_COMP_ONLY_MASK          0x001F
+
+/* the following constants define the specific characters of a version string
+ * for each character of the revision, a version string is in the following
+ * format, "X.YYZ" where X is the major revision (0 - 9), YY is the minor
+ * revision (00 - 99), and Z is the compatability revision (a - z)
+ */
+#define XVE_MAJOR_CHAR      0	/* major revision 0 - 9 */
+#define XVE_MINOR_TENS_CHAR 2	/* minor revision tens 0 - 9 */
+#define XVE_MINOR_ONES_CHAR 3	/* minor revision ones 0 - 9 */
+#define XVE_COMP_CHAR       4	/* compatability revision a - z */
+#define XVE_END_STRING_CHAR 5
+
+/**************************** Type Definitions *******************************/
+
+/***************** Macros (Inline Functions) Definitions *********************/
+
+/************************** Function Prototypes ******************************/
+
+static u32 IsVersionStringValid(s8 * StringPtr);
+
+/*****************************************************************************
+*
+* Unpacks a packed version into the specified version. Versions are packed
+* into the configuration ROM to reduce the amount storage. A packed version
+* is a binary format as oppossed to a non-packed version which is implemented
+* as a string.
+*
+* @param    InstancePtr points to the version to unpack the packed version into.
+* @param    PackedVersion contains the packed version to unpack.
+*
+* @return
+*
+* None.
+*
+* @note
+*
+* None.
+*
+******************************************************************************/
+void
+XVersion_UnPack(XVersion * InstancePtr, u16 PackedVersion)
+{
+	/* not implemented yet since CROM related */
+}
+
+/*****************************************************************************
+*
+* Packs a version into the specified packed version. Versions are packed into
+* the configuration ROM to reduce the amount storage.
+*
+* @param    InstancePtr points to the version to pack.
+* @param    PackedVersionPtr points to the packed version which will receive
+*           the new packed version.
+*
+* @return
+*
+* A status, XST_SUCCESS, indicating the packing was accomplished
+* successfully, or an error, XST_INVALID_VERSION, indicating the specified
+* input version was not valid such that the pack did not occur
+* <br><br>
+* The packed version pointed to by PackedVersionPtr is modified with the new
+* packed version if the status indicates success.
+*
+* @note
+*
+* None.
+*
+******************************************************************************/
+XStatus
+XVersion_Pack(XVersion * InstancePtr, u16 * PackedVersionPtr)
+{
+	/* not implemented yet since CROM related */
+
+	return XST_SUCCESS;
+}
+
+/*****************************************************************************
+*
+* Determines if two versions are equal.
+*
+* @param    InstancePtr points to the first version to be compared.
+* @param    VersionPtr points to a second version to be compared.
+*
+* @return
+*
+* TRUE if the versions are equal, FALSE otherwise.
+*
+* @note
+*
+* None.
+*
+******************************************************************************/
+u32
+XVersion_IsEqual(XVersion * InstancePtr, XVersion * VersionPtr)
+{
+	u8 *Version1 = (u8 *) InstancePtr;
+	u8 *Version2 = (u8 *) VersionPtr;
+	int Index;
+
+	/* assert to verify input arguments */
+
+	XASSERT_NONVOID(InstancePtr != NULL);
+	XASSERT_NONVOID(VersionPtr != NULL);
+
+	/* check each byte of the versions to see if they are the same,
+	 * return at any point a byte differs between them
+	 */
+	for (Index = 0; Index < sizeof (XVersion); Index++) {
+		if (Version1[Index] != Version2[Index]) {
+			return FALSE;
+		}
+	}
+
+	/* No byte was found to be different between the versions, so indicate
+	 * the versions are equal
+	 */
+	return TRUE;
+}
+
+/*****************************************************************************
+*
+* Converts a version to a null terminated string.
+*
+* @param    InstancePtr points to the version to convert.
+* @param    StringPtr points to the string which will be the result of the
+*           conversion. This does not need to point to a null terminated
+*           string as an input, but must point to storage which is an adequate
+*           amount to hold the result string.
+*
+* @return
+*
+* The null terminated string is inserted at the location pointed to by
+* StringPtr if the status indicates success.
+*
+* @note
+*
+* It is necessary for the caller to have already allocated the storage to
+* contain the string.  The amount of memory necessary for the string is
+* specified in the version header file.
+*
+******************************************************************************/
+void
+XVersion_ToString(XVersion * InstancePtr, s8 * StringPtr)
+{
+	/* assert to verify input arguments */
+
+	XASSERT_VOID(InstancePtr != NULL);
+	XASSERT_VOID(StringPtr != NULL);
+
+	/* since version is implemented as a string, just copy the specified
+	 * input into the specified output
+	 */
+	XVersion_Copy(InstancePtr, (XVersion *) StringPtr);
+}
+
+/*****************************************************************************
+*
+* Initializes a version from a null terminated string. Since the string may not
+* be a format which is compatible with the version, an error could occur.
+*
+* @param    InstancePtr points to the version which is to be initialized.
+* @param    StringPtr points to a null terminated string which will be
+*           converted to a version.  The format of the string must match the
+*           version string format which is X.YYX where X = 0 - 9, YY = 00 - 99,
+*           Z = a - z.
+*
+* @return
+*
+* A status, XST_SUCCESS, indicating the conversion was accomplished
+* successfully, or XST_INVALID_VERSION indicating the version string format
+* was not valid.
+*
+* @note
+*
+* None.
+*
+******************************************************************************/
+XStatus
+XVersion_FromString(XVersion * InstancePtr, s8 * StringPtr)
+{
+	/* assert to verify input arguments */
+
+	XASSERT_NONVOID(InstancePtr != NULL);
+	XASSERT_NONVOID(StringPtr != NULL);
+
+	/* if the version string specified is not valid, return an error */
+
+	if (!IsVersionStringValid(StringPtr)) {
+		return XST_INVALID_VERSION;
+	}
+
+	/* copy the specified string into the specified version and indicate the
+	 * conversion was successful
+	 */
+	XVersion_Copy((XVersion *) StringPtr, InstancePtr);
+
+	return XST_SUCCESS;
+}
+
+/*****************************************************************************
+*
+* Copies the contents of a version to another version.
+*
+* @param    InstancePtr points to the version which is the source of data for
+*           the copy operation.
+* @param    VersionPtr points to another version which is the destination of
+*           the copy operation.
+*
+* @return
+*
+* None.
+*
+* @note
+*
+* None.
+*
+******************************************************************************/
+void
+XVersion_Copy(XVersion * InstancePtr, XVersion * VersionPtr)
+{
+	u8 *Source = (u8 *) InstancePtr;
+	u8 *Destination = (u8 *) VersionPtr;
+	int Index;
+
+	/* assert to verify input arguments */
+
+	XASSERT_VOID(InstancePtr != NULL);
+	XASSERT_VOID(VersionPtr != NULL);
+
+	/* copy each byte of the source version to the destination version */
+
+	for (Index = 0; Index < sizeof (XVersion); Index++) {
+		Destination[Index] = Source[Index];
+	}
+}
+
+/*****************************************************************************
+*
+* Determines if the specified version is valid.
+*
+* @param    StringPtr points to the string to be validated.
+*
+* @return
+*
+* TRUE if the version string is a valid format, FALSE otherwise.
+*
+* @note
+*
+* None.
+*
+******************************************************************************/
+static u32
+IsVersionStringValid(s8 * StringPtr)
+{
+	/* if the input string is not a valid format, "X.YYZ" where X = 0 - 9,
+	 * YY = 00 - 99, and Z = a - z, then indicate it's not valid
+	 */
+	if ((StringPtr[XVE_MAJOR_CHAR] < '0') ||
+	    (StringPtr[XVE_MAJOR_CHAR] > '9') ||
+	    (StringPtr[XVE_MINOR_TENS_CHAR] < '0') ||
+	    (StringPtr[XVE_MINOR_TENS_CHAR] > '9') ||
+	    (StringPtr[XVE_MINOR_ONES_CHAR] < '0') ||
+	    (StringPtr[XVE_MINOR_ONES_CHAR] > '9') ||
+	    (StringPtr[XVE_COMP_CHAR] < 'a') ||
+	    (StringPtr[XVE_COMP_CHAR] > 'z')) {
+		return FALSE;
+	}
+
+	return TRUE;
+}