* 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, 153 insertions, 0 deletions

diff --git a/board/xilinx/xilinx_enet/emac_adapter.c b/board/xilinx/xilinx_enet/emac_adapter.c
new file mode 100644
index 0000000..a3c37ba
--- /dev/null
+++ b/board/xilinx/xilinx_enet/emac_adapter.c
@@ -0,0 +1,153 @@
+/******************************************************************************
+*
+*     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.
+*
+******************************************************************************/
+
+#include <common.h>
+#include <net.h>
+#include <configs/ml300.h>
+#include "xparameters.h"
+#include "xemac.h"
+
+#if defined(XPAR_EMAC_0_DEVICE_ID)
+/*
+ * ENET_MAX_MTU and ENET_MAX_MTU_ALIGNED are set from
+ * PKTSIZE and PKTSIZE_ALIGN (include/net.h)
+ */
+
+#define ENET_MAX_MTU           PKTSIZE
+#define ENET_MAX_MTU_ALIGNED   PKTSIZE_ALIGN
+#define ENET_ADDR_LENGTH       6
+
+static XEmac Emac;
+static char etherrxbuff[PKTSIZE_ALIGN];	/* Receive buffer */
+
+/* hardcoded MAC address for the Xilinx EMAC Core */
+static u8 EMACAddr[ENET_ADDR_LENGTH] = { 0x00, 0x0a, 0x35, 0x00, 0x22, 0x01 };
+
+static int initialized = 0;
+
+void
+eth_halt(void)
+{
+	if (initialized)
+		(void) XEmac_Stop(&Emac);
+}
+
+int
+eth_init(bd_t * bis)
+{
+	u32 Options;
+	XStatus Result;
+
+#ifdef DEBUG
+	printf("EMAC Initialization Started\n\r");
+#endif
+
+	Result = XEmac_Initialize(&Emac, XPAR_EMAC_0_DEVICE_ID);
+	if (Result != XST_SUCCESS) {
+		return 0;
+	}
+
+	/* make sure the Emac is stopped before it is started */
+	(void) XEmac_Stop(&Emac);
+
+	memcpy(bis->bi_enetaddr, EMACAddr, 6);
+	Result = XEmac_SetMacAddress(&Emac, EMACAddr);
+	if (Result != XST_SUCCESS) {
+		return 0;
+	}
+
+	Options =
+	    (XEM_POLLED_OPTION | XEM_UNICAST_OPTION | XEM_BROADCAST_OPTION |
+	     XEM_FDUPLEX_OPTION | XEM_INSERT_FCS_OPTION |
+	     XEM_INSERT_PAD_OPTION);
+	Result = XEmac_SetOptions(&Emac, Options);
+	if (Result != XST_SUCCESS) {
+		return 0;
+	}
+
+	Result = XEmac_Start(&Emac);
+	if (Result != XST_SUCCESS) {
+		return 0;
+	}
+#ifdef DEBUG
+	printf("EMAC Initialization complete\n\r");
+#endif
+
+	initialized = 1;
+
+	return (0);
+}
+
+/*-----------------------------------------------------------------------------+
++-----------------------------------------------------------------------------*/
+int
+eth_send(volatile void *ptr, int len)
+{
+	XStatus Result;
+
+	if (len > ENET_MAX_MTU)
+		len = ENET_MAX_MTU;
+
+	Result = XEmac_PollSend(&Emac, (u8 *) ptr, len);
+	if (Result == XST_SUCCESS) {
+		return (1);
+	} else {
+		printf("Error while sending frame\n\r");
+		return (0);
+	}
+
+}
+
+int
+eth_rx(void)
+{
+	u32 RecvFrameLength;
+	XStatus Result;
+
+	RecvFrameLength = PKTSIZE;
+	Result = XEmac_PollRecv(&Emac, (u8 *) etherrxbuff, &RecvFrameLength);
+	if (Result == XST_SUCCESS) {
+		NetReceive(etherrxbuff, RecvFrameLength);
+		return (1);
+	} else {
+		return (0);
+	}
+}
+
+#endif