* 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, 462 insertions, 0 deletions

diff --git a/board/xilinx/xilinx_enet/xemac_l.h b/board/xilinx/xilinx_enet/xemac_l.h
new file mode 100644
index 0000000000..a463937dbd
--- /dev/null
+++ b/board/xilinx/xilinx_enet/xemac_l.h
@@ -0,0 +1,462 @@
+/******************************************************************************
+*
+*     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.
+*
+******************************************************************************/
+/*****************************************************************************/
+/**
+*
+* @file xemac_l.h
+*
+* This header file contains identifiers and low-level driver functions (or
+* macros) that can be used to access the device.  High-level driver functions
+* are defined in xemac.h.
+*
+* <pre>
+* MODIFICATION HISTORY:
+*
+* Ver	Who  Date     Changes
+* ----- ---- -------- -----------------------------------------------
+* 1.00b rpm  04/26/02 First release
+* 1.00b rmm  09/23/02 Added XEmac_mPhyReset macro
+* 1.00c rpm  12/05/02 New version includes support for simple DMA
+* </pre>
+*
+******************************************************************************/
+
+#ifndef XEMAC_L_H		/* prevent circular inclusions */
+#define XEMAC_L_H		/* by using protection macros */
+
+/***************************** Include Files *********************************/
+
+#include "xbasic_types.h"
+#include "xio.h"
+
+/************************** Constant Definitions *****************************/
+
+/* Offset of the MAC registers from the IPIF base address */
+#define XEM_REG_OFFSET	   0x1100UL
+
+/*
+ * Register offsets for the Ethernet MAC. Each register is 32 bits.
+ */
+#define XEM_EMIR_OFFSET	  (XEM_REG_OFFSET + 0x0)	/* EMAC Module ID */
+#define XEM_ECR_OFFSET	  (XEM_REG_OFFSET + 0x4)	/* MAC Control */
+#define XEM_IFGP_OFFSET	  (XEM_REG_OFFSET + 0x8)	/* Interframe Gap */
+#define XEM_SAH_OFFSET	  (XEM_REG_OFFSET + 0xC)	/* Station addr, high */
+#define XEM_SAL_OFFSET	  (XEM_REG_OFFSET + 0x10)	/* Station addr, low */
+#define XEM_MGTCR_OFFSET  (XEM_REG_OFFSET + 0x14)	/* MII mgmt control */
+#define XEM_MGTDR_OFFSET  (XEM_REG_OFFSET + 0x18)	/* MII mgmt data */
+#define XEM_RPLR_OFFSET	  (XEM_REG_OFFSET + 0x1C)	/* Rx packet length */
+#define XEM_TPLR_OFFSET	  (XEM_REG_OFFSET + 0x20)	/* Tx packet length */
+#define XEM_TSR_OFFSET	  (XEM_REG_OFFSET + 0x24)	/* Tx status */
+#define XEM_RMFC_OFFSET	  (XEM_REG_OFFSET + 0x28)	/* Rx missed frames */
+#define XEM_RCC_OFFSET	  (XEM_REG_OFFSET + 0x2C)	/* Rx collisions */
+#define XEM_RFCSEC_OFFSET (XEM_REG_OFFSET + 0x30)	/* Rx FCS errors */
+#define XEM_RAEC_OFFSET	  (XEM_REG_OFFSET + 0x34)	/* Rx alignment errors */
+#define XEM_TEDC_OFFSET	  (XEM_REG_OFFSET + 0x38)	/* Transmit excess
+							 * deferral cnt */
+
+/*
+ * Register offsets for the IPIF components
+ */
+#define XEM_ISR_OFFSET		 0x20UL /* Interrupt status */
+
+#define XEM_DMA_OFFSET		 0x2300UL
+#define XEM_DMA_SEND_OFFSET	 (XEM_DMA_OFFSET + 0x0) /* DMA send channel */
+#define XEM_DMA_RECV_OFFSET	 (XEM_DMA_OFFSET + 0x40)	/* DMA recv channel */
+
+#define XEM_PFIFO_OFFSET	 0x2000UL
+#define XEM_PFIFO_TXREG_OFFSET	 (XEM_PFIFO_OFFSET + 0x0)	/* Tx registers */
+#define XEM_PFIFO_RXREG_OFFSET	 (XEM_PFIFO_OFFSET + 0x10)	/* Rx registers */
+#define XEM_PFIFO_TXDATA_OFFSET	 (XEM_PFIFO_OFFSET + 0x100)	/* Tx keyhole */
+#define XEM_PFIFO_RXDATA_OFFSET	 (XEM_PFIFO_OFFSET + 0x200)	/* Rx keyhole */
+
+/*
+ * EMAC Module Identification Register (EMIR)
+ */
+#define XEM_EMIR_VERSION_MASK	 0xFFFF0000UL	/* Device version */
+#define XEM_EMIR_TYPE_MASK	 0x0000FF00UL	/* Device type */
+
+/*
+ * EMAC Control Register (ECR)
+ */
+#define XEM_ECR_FULL_DUPLEX_MASK	 0x80000000UL	/* Full duplex mode */
+#define XEM_ECR_XMIT_RESET_MASK		 0x40000000UL	/* Reset transmitter */
+#define XEM_ECR_XMIT_ENABLE_MASK	 0x20000000UL	/* Enable transmitter */
+#define XEM_ECR_RECV_RESET_MASK		 0x10000000UL	/* Reset receiver */
+#define XEM_ECR_RECV_ENABLE_MASK	 0x08000000UL	/* Enable receiver */
+#define XEM_ECR_PHY_ENABLE_MASK		 0x04000000UL	/* Enable PHY */
+#define XEM_ECR_XMIT_PAD_ENABLE_MASK	 0x02000000UL	/* Enable xmit pad insert */
+#define XEM_ECR_XMIT_FCS_ENABLE_MASK	 0x01000000UL	/* Enable xmit FCS insert */
+#define XEM_ECR_XMIT_ADDR_INSERT_MASK	 0x00800000UL	/* Enable xmit source addr
+							 * insertion */
+#define XEM_ECR_XMIT_ERROR_INSERT_MASK	 0x00400000UL	/* Insert xmit error */
+#define XEM_ECR_XMIT_ADDR_OVWRT_MASK	 0x00200000UL	/* Enable xmit source addr
+							 * overwrite */
+#define XEM_ECR_LOOPBACK_MASK		 0x00100000UL	/* Enable internal
+							 * loopback */
+#define XEM_ECR_RECV_STRIP_ENABLE_MASK	 0x00080000UL	/* Enable recv pad/fcs strip */
+#define XEM_ECR_UNICAST_ENABLE_MASK	 0x00020000UL	/* Enable unicast addr */
+#define XEM_ECR_MULTI_ENABLE_MASK	 0x00010000UL	/* Enable multicast addr */
+#define XEM_ECR_BROAD_ENABLE_MASK	 0x00008000UL	/* Enable broadcast addr */
+#define XEM_ECR_PROMISC_ENABLE_MASK	 0x00004000UL	/* Enable promiscuous mode */
+#define XEM_ECR_RECV_ALL_MASK		 0x00002000UL	/* Receive all frames */
+#define XEM_ECR_RESERVED2_MASK		 0x00001000UL	/* Reserved */
+#define XEM_ECR_MULTI_HASH_ENABLE_MASK	 0x00000800UL	/* Enable multicast hash */
+#define XEM_ECR_PAUSE_FRAME_MASK	 0x00000400UL	/* Interpret pause frames */
+#define XEM_ECR_CLEAR_HASH_MASK		 0x00000200UL	/* Clear hash table */
+#define XEM_ECR_ADD_HASH_ADDR_MASK	 0x00000100UL	/* Add hash table address */
+
+/*
+ * Interframe Gap Register (IFGR)
+ */
+#define XEM_IFGP_PART1_MASK	    0xF8000000UL	/* Interframe Gap Part1 */
+#define XEM_IFGP_PART1_SHIFT	    27
+#define XEM_IFGP_PART2_MASK	    0x07C00000UL	/* Interframe Gap Part2 */
+#define XEM_IFGP_PART2_SHIFT	    22
+
+/*
+ * Station Address High Register (SAH)
+ */
+#define XEM_SAH_ADDR_MASK	    0x0000FFFFUL	/* Station address high bytes */
+
+/*
+ * Station Address Low Register (SAL)
+ */
+#define XEM_SAL_ADDR_MASK	    0xFFFFFFFFUL	/* Station address low bytes */
+
+/*
+ * MII Management Control Register (MGTCR)
+ */
+#define XEM_MGTCR_START_MASK	    0x80000000UL	/* Start/Busy */
+#define XEM_MGTCR_RW_NOT_MASK	    0x40000000UL	/* Read/Write Not (direction) */
+#define XEM_MGTCR_PHY_ADDR_MASK	    0x3E000000UL	/* PHY address */
+#define XEM_MGTCR_PHY_ADDR_SHIFT    25	/* PHY address shift */
+#define XEM_MGTCR_REG_ADDR_MASK	    0x01F00000UL	/* Register address */
+#define XEM_MGTCR_REG_ADDR_SHIFT    20	/* Register addr shift */
+#define XEM_MGTCR_MII_ENABLE_MASK   0x00080000UL	/* Enable MII from EMAC */
+#define XEM_MGTCR_RD_ERROR_MASK	    0x00040000UL	/* MII mgmt read error */
+
+/*
+ * MII Management Data Register (MGTDR)
+ */
+#define XEM_MGTDR_DATA_MASK	    0x0000FFFFUL	/* MII data */
+
+/*
+ * Receive Packet Length Register (RPLR)
+ */
+#define XEM_RPLR_LENGTH_MASK	    0x0000FFFFUL	/* Receive packet length */
+
+/*
+ * Transmit Packet Length Register (TPLR)
+ */
+#define XEM_TPLR_LENGTH_MASK	    0x0000FFFFUL	/* Transmit packet length */
+
+/*
+ * Transmit Status Register (TSR)
+ */
+#define XEM_TSR_EXCESS_DEFERRAL_MASK 0x80000000UL	/* Transmit excess deferral */
+#define XEM_TSR_FIFO_UNDERRUN_MASK   0x40000000UL	/* Packet FIFO underrun */
+#define XEM_TSR_ATTEMPTS_MASK	     0x3E000000UL	/* Transmission attempts */
+#define XEM_TSR_LATE_COLLISION_MASK  0x01000000UL	/* Transmit late collision */
+
+/*
+ * Receive Missed Frame Count (RMFC)
+ */
+#define XEM_RMFC_DATA_MASK	    0x0000FFFFUL
+
+/*
+ * Receive Collision Count (RCC)
+ */
+#define XEM_RCC_DATA_MASK	    0x0000FFFFUL
+
+/*
+ * Receive FCS Error Count (RFCSEC)
+ */
+#define XEM_RFCSEC_DATA_MASK	    0x0000FFFFUL
+
+/*
+ * Receive Alignment Error Count (RALN)
+ */
+#define XEM_RAEC_DATA_MASK	    0x0000FFFFUL
+
+/*
+ * Transmit Excess Deferral Count (TEDC)
+ */
+#define XEM_TEDC_DATA_MASK	    0x0000FFFFUL
+
+/*
+ * EMAC Interrupt Registers (Status and Enable) masks. These registers are
+ * part of the IPIF IP Interrupt registers
+ */
+#define XEM_EIR_XMIT_DONE_MASK	       0x00000001UL	/* Xmit complete */
+#define XEM_EIR_RECV_DONE_MASK	       0x00000002UL	/* Recv complete */
+#define XEM_EIR_XMIT_ERROR_MASK	       0x00000004UL	/* Xmit error */
+#define XEM_EIR_RECV_ERROR_MASK	       0x00000008UL	/* Recv error */
+#define XEM_EIR_XMIT_SFIFO_EMPTY_MASK  0x00000010UL	/* Xmit status fifo empty */
+#define XEM_EIR_RECV_LFIFO_EMPTY_MASK  0x00000020UL	/* Recv length fifo empty */
+#define XEM_EIR_XMIT_LFIFO_FULL_MASK   0x00000040UL	/* Xmit length fifo full */
+#define XEM_EIR_RECV_LFIFO_OVER_MASK   0x00000080UL	/* Recv length fifo
+							 * overrun */
+#define XEM_EIR_RECV_LFIFO_UNDER_MASK  0x00000100UL	/* Recv length fifo
+							 * underrun */
+#define XEM_EIR_XMIT_SFIFO_OVER_MASK   0x00000200UL	/* Xmit status fifo
+							 * overrun */
+#define XEM_EIR_XMIT_SFIFO_UNDER_MASK  0x00000400UL	/* Transmit status fifo
+							 * underrun */
+#define XEM_EIR_XMIT_LFIFO_OVER_MASK   0x00000800UL	/* Transmit length fifo
+							 * overrun */
+#define XEM_EIR_XMIT_LFIFO_UNDER_MASK  0x00001000UL	/* Transmit length fifo
+							 * underrun */
+#define XEM_EIR_XMIT_PAUSE_MASK	       0x00002000UL	/* Transmit pause pkt
+							 * received */
+#define XEM_EIR_RECV_DFIFO_OVER_MASK   0x00004000UL	/* Receive data fifo
+							 * overrun */
+#define XEM_EIR_RECV_MISSED_FRAME_MASK 0x00008000UL	/* Receive missed frame
+							 * error */
+#define XEM_EIR_RECV_COLLISION_MASK    0x00010000UL	/* Receive collision
+							 * error */
+#define XEM_EIR_RECV_FCS_ERROR_MASK    0x00020000UL	/* Receive FCS error */
+#define XEM_EIR_RECV_LEN_ERROR_MASK    0x00040000UL	/* Receive length field
+							 * error */
+#define XEM_EIR_RECV_SHORT_ERROR_MASK  0x00080000UL	/* Receive short frame
+							 * error */
+#define XEM_EIR_RECV_LONG_ERROR_MASK   0x00100000UL	/* Receive long frame
+							 * error */
+#define XEM_EIR_RECV_ALIGN_ERROR_MASK  0x00200000UL	/* Receive alignment
+							 * error */
+
+/**************************** Type Definitions *******************************/
+
+/***************** Macros (Inline Functions) Definitions *********************/
+
+/*****************************************************************************
+*
+* Low-level driver macros and functions. The list below provides signatures
+* to help the user use the macros.
+*
+* u32 XEmac_mReadReg(u32 BaseAddress, int RegOffset)
+* void XEmac_mWriteReg(u32 BaseAddress, int RegOffset, u32 Mask)
+*
+* void XEmac_mSetControlReg(u32 BaseAddress, u32 Mask)
+* void XEmac_mSetMacAddress(u32 BaseAddress, u8 *AddressPtr)
+*
+* void XEmac_mEnable(u32 BaseAddress)
+* void XEmac_mDisable(u32 BaseAddress)
+*
+* u32 XEmac_mIsTxDone(u32 BaseAddress)
+* u32 XEmac_mIsRxEmpty(u32 BaseAddress)
+*
+* void XEmac_SendFrame(u32 BaseAddress, u8 *FramePtr, int Size)
+* int XEmac_RecvFrame(u32 BaseAddress, u8 *FramePtr)
+*
+*****************************************************************************/
+
+/****************************************************************************/
+/**
+*
+* Read the given register.
+*
+* @param    BaseAddress is the base address of the device
+* @param    RegOffset is the register offset to be read
+*
+* @return   The 32-bit value of the register
+*
+* @note	    None.
+*
+*****************************************************************************/
+#define XEmac_mReadReg(BaseAddress, RegOffset) \
+		    XIo_In32((BaseAddress) + (RegOffset))
+
+/****************************************************************************/
+/**
+*
+* Write the given register.
+*
+* @param    BaseAddress is the base address of the device
+* @param    RegOffset is the register offset to be written
+* @param    Data is the 32-bit value to write to the register
+*
+* @return   None.
+*
+* @note	    None.
+*
+*****************************************************************************/
+#define XEmac_mWriteReg(BaseAddress, RegOffset, Data) \
+		    XIo_Out32((BaseAddress) + (RegOffset), (Data))
+
+/****************************************************************************/
+/**
+*
+* Set the contents of the control register. Use the XEM_ECR_* constants
+* defined above to create the bit-mask to be written to the register.
+*
+* @param    BaseAddress is the base address of the device
+* @param    Mask is the 16-bit value to write to the control register
+*
+* @return   None.
+*
+* @note	    None.
+*
+*****************************************************************************/
+#define XEmac_mSetControlReg(BaseAddress, Mask) \
+		    XIo_Out32((BaseAddress) + XEM_ECR_OFFSET, (Mask))
+
+/****************************************************************************/
+/**
+*
+* Set the station address of the EMAC device.
+*
+* @param    BaseAddress is the base address of the device
+* @param    AddressPtr is a pointer to a 6-byte MAC address
+*
+* @return   None.
+*
+* @note	    None.
+*
+*****************************************************************************/
+#define XEmac_mSetMacAddress(BaseAddress, AddressPtr)		    \
+{								    \
+    u32 MacAddr;						\
+								    \
+    MacAddr = ((AddressPtr)[0] << 8) | (AddressPtr)[1];		    \
+    XIo_Out32((BaseAddress) + XEM_SAH_OFFSET, MacAddr);		    \
+								    \
+    MacAddr = ((AddressPtr)[2] << 24) | ((AddressPtr)[3] << 16) |   \
+	      ((AddressPtr)[4] << 8) | (AddressPtr)[5];		    \
+								    \
+    XIo_Out32((BaseAddress) + XEM_SAL_OFFSET, MacAddr);		    \
+}
+
+/****************************************************************************/
+/**
+*
+* Enable the transmitter and receiver. Preserve the contents of the control
+* register.
+*
+* @param    BaseAddress is the base address of the device
+*
+* @return   None.
+*
+* @note	    None.
+*
+*****************************************************************************/
+#define XEmac_mEnable(BaseAddress) \
+{ \
+    u32 Control; \
+    Control = XIo_In32((BaseAddress) + XEM_ECR_OFFSET); \
+    Control &= ~(XEM_ECR_XMIT_RESET_MASK | XEM_ECR_RECV_RESET_MASK); \
+    Control |= (XEM_ECR_XMIT_ENABLE_MASK | XEM_ECR_RECV_ENABLE_MASK); \
+    XIo_Out32((BaseAddress) + XEM_ECR_OFFSET, Control); \
+}
+
+/****************************************************************************/
+/**
+*
+* Disable the transmitter and receiver. Preserve the contents of the control
+* register.
+*
+* @param    BaseAddress is the base address of the device
+*
+* @return   None.
+*
+* @note	    None.
+*
+*****************************************************************************/
+#define XEmac_mDisable(BaseAddress) \
+		XIo_Out32((BaseAddress) + XEM_ECR_OFFSET, \
+		    XIo_In32((BaseAddress) + XEM_ECR_OFFSET) & \
+		    ~(XEM_ECR_XMIT_ENABLE_MASK | XEM_ECR_RECV_ENABLE_MASK))
+
+/****************************************************************************/
+/**
+*
+* Check to see if the transmission is complete.
+*
+* @param    BaseAddress is the base address of the device
+*
+* @return   TRUE if it is done, or FALSE if it is not.
+*
+* @note	    None.
+*
+*****************************************************************************/
+#define XEmac_mIsTxDone(BaseAddress) \
+	     (XIo_In32((BaseAddress) + XEM_ISR_OFFSET) & XEM_EIR_XMIT_DONE_MASK)
+
+/****************************************************************************/
+/**
+*
+* Check to see if the receive FIFO is empty.
+*
+* @param    BaseAddress is the base address of the device
+*
+* @return   TRUE if it is empty, or FALSE if it is not.
+*
+* @note	    None.
+*
+*****************************************************************************/
+#define XEmac_mIsRxEmpty(BaseAddress) \
+	  (!(XIo_In32((BaseAddress) + XEM_ISR_OFFSET) & XEM_EIR_RECV_DONE_MASK))
+
+/****************************************************************************/
+/**
+*
+* Reset MII compliant PHY
+*
+* @param    BaseAddress is the base address of the device
+*
+* @return   None.
+*
+* @note	    None.
+*
+*****************************************************************************/
+#define XEmac_mPhyReset(BaseAddress) \
+{ \
+    u32 Control;				    \
+    Control = XIo_In32((BaseAddress) + XEM_ECR_OFFSET); \
+    Control &= ~XEM_ECR_PHY_ENABLE_MASK;		\
+    XIo_Out32((BaseAddress) + XEM_ECR_OFFSET, Control); \
+    Control |= XEM_ECR_PHY_ENABLE_MASK;			\
+    XIo_Out32((BaseAddress) + XEM_ECR_OFFSET, Control); \
+}
+
+/************************** Function Prototypes ******************************/
+
+void XEmac_SendFrame(u32 BaseAddress, u8 * FramePtr, int Size);
+int XEmac_RecvFrame(u32 BaseAddress, u8 * FramePtr);
+
+#endif				/* end of protection macro */