* Update Intel IXP4xx support

- Add IXP4xx NPE ethernet MAC support
- Add support for Intel IXDPG425 board
- Add support for Prodrive PDNB3 board
- Add IRQ support
Patch by Stefan Roese, 23 May 2006

[This patch does not include cpu/ixp/npe/IxNpeMicrocode.c which still
 sufferes from licensing issues. Blame Intel.]

1 files changed, 742 insertions, 0 deletions

diff --git a/cpu/ixp/npe/include/IxFeatureCtrl.h b/cpu/ixp/npe/include/IxFeatureCtrl.h
new file mode 100644
index 0000000000..dabc38e25e
--- /dev/null
+++ b/cpu/ixp/npe/include/IxFeatureCtrl.h
@@ -0,0 +1,742 @@
+/**
+ * @file IxFeatureCtrl.h
+ *
+ * @date 30-Jan-2003
+
+ * @brief This file contains the public API of the IXP400 Feature Control
+ *        component.
+ *
+ * 
+ * @par
+ * IXP400 SW Release version 2.0
+ * 
+ * -- Copyright Notice --
+ * 
+ * @par
+ * Copyright 2001-2005, Intel Corporation.
+ * All rights reserved.
+ * 
+ * @par
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ * 
+ * @par
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * @par
+ * -- End of Copyright Notice --
+*/
+/* ------------------------------------------------------
+   Doxygen group definitions
+   ------------------------------------------------------ */
+/**
+ * @defgroup IxFeatureCtrlAPI IXP400 Feature Control (IxFeatureCtrl) API
+ *
+ * @brief The Public API for the IXP400 Feature Control.
+ * 
+ * @{
+ */
+
+#ifndef IXFEATURECTRL_H
+#define IXFEATURECTRL_H
+
+/*
+ * User defined include files
+ */
+#include "IxOsal.h"
+
+/*
+ * #defines and macros
+ */
+
+/*************************************************************
+ * The following are IxFeatureCtrlComponentCheck return values.
+ ************************************************************/
+
+/**
+ * @ingroup IxFeatureCtrlAPI 
+ *
+ * @def  IX_FEATURE_CTRL_COMPONENT_DISABLED
+ *
+ * @brief Hardware Component is disabled/unavailable.
+ *        Return status by ixFeatureCtrlComponentCheck()  
+ */
+#define  IX_FEATURE_CTRL_COMPONENT_DISABLED 0
+
+/**
+ * @ingroup IxFeatureCtrlAPI 
+ *
+ * @def  IX_FEATURE_CTRL_COMPONENT_ENABLED
+ *
+ * @brief Hardware Component is available. 
+ *        Return status by ixFeatureCtrlComponentCheck()  
+ */
+#define  IX_FEATURE_CTRL_COMPONENT_ENABLED  1
+
+/***********************************************************************************
+ * Product ID in XScale CP15 - Register 0
+ *  - It contains information on the maximum XScale Core Frequency and
+ *    Silicon Stepping.  
+ *  - XScale Core Frequency Id indicates only the maximum XScale frequency
+ *    achievable and not the running XScale frequency (maybe stepped down).    
+ *  - The register is read by using ixFeatureCtrlProductIdRead.
+ *  - Usage example: 
+ *          productId = ixFeatureCtrlProductIdRead();
+ *          if( (productId & IX_FEATURE_CTRL_SILICON_STEPPING_MASK) == 
+ *              IX_FEATURE_CTRL_SILICON_TYPE_A0 )
+ *          if( (productId & IX_FEATURE_CTRL_XSCALE_FREQ_MASK) == 
+ *              IX_FEATURE_CTRL_XSCALE_FREQ_533 )    
+ * 
+ *  31 28 27 24 23 20 19 16 15 12 11        9 8                   4 3              0  
+ *  -------------------------------------------------------------------------------- 
+ * | 0x6 | 0x9 | 0x0 | 0x5 | 0x4 | Device ID | XScale Core Freq Id | Si Stepping Id |    
+ *  --------------------------------------------------------------------------------
+ *
+ *   Maximum Achievable XScale Core Frequency Id :  533MHz  - 0x1C 
+ *                                                  400MHz  - 0x1D 
+ *                                                  266MHz  - 0x1F
+ *
+ *   <b>THE CORE FREQUENCY ID IS NOT APPLICABLE TO IXP46X <\b>
+ *  
+ *   The above is applicable to IXP42X only. CP15 in IXP46X does not contain any
+ *   Frequency ID. 
+ * 
+ *  Si Stepping Id            :  A       - 0x0    
+ *                               B       - 0x1 
+ *  
+ *  XScale Core freq Id - Device ID [11:9] : IXP42X - 0x0
+ *                                           IXP46X - 0x1
+ *************************************************************************************/
+
+/**
+ * @ingroup IxFeatureCtrlAPI 
+ *
+ * @def IX_FEATURE_CTRL_SILICON_TYPE_A0
+ *
+ * @brief This is the value of A0 Silicon in product ID. 
+ */
+#define IX_FEATURE_CTRL_SILICON_TYPE_A0   0
+
+/**
+ * @ingroup IxFeatureCtrlAPI 
+ *
+ * @def IX_FEATURE_CTRL_SILICON_TYPE_B0
+ *
+ * @brief This is the value of B0 Silicon in product ID.
+ */
+#define IX_FEATURE_CTRL_SILICON_TYPE_B0   1
+
+/**
+ * @ingroup IxFeatureCtrlAPI 
+ *
+ * @def IX_FEATURE_CTRL_SILICON_STEPPING_MASK
+ *
+ * @brief This is the mask of silicon stepping in product ID. 
+ */
+#define IX_FEATURE_CTRL_SILICON_STEPPING_MASK  0xF 
+
+/**
+ * @ingroup IxFeatureCtrlAPI
+ *
+ * @def IX_FEATURE_CTRL_DEVICE_TYPE_MASK
+ *
+ * @brief This is the mask of silicon stepping in product ID.
+ */
+#define IX_FEATURE_CTRL_DEVICE_TYPE_MASK  (0x7) 
+
+/**
+ * @ingroup IxFeatureCtrlAPI
+ *
+ * @def IX_FEATURE_CTRL_DEVICE_TYPE_OFFSET
+ *
+ * @brief This is the mask of silicon stepping in product ID.
+ */
+#define IX_FEATURE_CTRL_DEVICE_TYPE_OFFSET  9
+
+
+/**
+ * @ingroup IxFeatureCtrlAPI 
+ *
+ * @def IX_FEATURE_CTRL_XSCALE_FREQ_533
+ *
+ * @brief This is the value of 533MHz XScale Core in product ID.
+ */
+#define IX_FEATURE_CTRL_XSCALE_FREQ_533  ((0x1C)<<4)
+
+/**
+ * @ingroup IxFeatureCtrlAPI 
+ *
+ * @def IX_FEATURE_CTRL_XSCALE_FREQ_400
+ *
+ * @brief This is the value of 400MHz XScale Core in product ID.
+ */
+#define IX_FEATURE_CTRL_XSCALE_FREQ_400  ((0x1D)<<4)
+
+/**
+ * @ingroup IxFeatureCtrlAPI 
+ *
+ * @def IX_FEATURE_CTRL_XSCALE_FREQ_266
+ *
+ * @brief This is the value of 266MHz XScale Core in product ID.
+ */
+#define IX_FEATURE_CTRL_XSCALE_FREQ_266 ((0x1F)<<4)   
+
+/**
+ * @ingroup IxFeatureCtrlAPI 
+ *
+ * @def IX_FEATURE_CTRL_XSCALE_FREQ_MASK
+ *
+ * @brief This is the mask of XScale Core in product ID.
+ */
+#define IX_FEATURE_CTRL_XSCALE_FREQ_MASK ((0xFF)<<4)  
+
+/**
+ * @ingroup IxFeatureCtrlAPI 
+ *
+ * @def IX_FEATURECTRL_REG_UTOPIA_32PHY
+ *
+ * @brief Maximum  UTOPIA PHY available is 32.  
+ * 
+ */
+#define IX_FEATURECTRL_REG_UTOPIA_32PHY  0x0
+
+/**
+ * @ingroup IxFeatureCtrlAPI 
+ *
+ * @def IX_FEATURECTRL_REG_UTOPIA_16PHY
+ *
+ * @brief Maximum  UTOPIA PHY available is 16.  
+ * 
+ */
+#define IX_FEATURECTRL_REG_UTOPIA_16PHY  0x1
+
+/**
+ * @ingroup IxFeatureCtrlAPI 
+ *
+ * @def IX_FEATURECTRL_REG_UTOPIA_8PHY
+ *
+ * @brief Maximum  UTOPIA PHY available to is 8.  
+ * 
+ */
+#define IX_FEATURECTRL_REG_UTOPIA_8PHY   0x2
+
+/**
+ * @ingroup IxFeatureCtrlAPI 
+ *
+ * @def IX_FEATURECTRL_REG_UTOPIA_4PHY
+ *
+ * @brief Maximum  UTOPIA PHY available to is 4.  
+ * 
+ */
+#define IX_FEATURECTRL_REG_UTOPIA_4PHY   0x3
+
+#ifdef __ixp46X
+
+/**
+ * @ingroup IxFeatureCtrlAPI
+ *
+ * @def IX_FEATURECTRL_REG_XSCALE_533FREQ
+ *
+ * @brief Maximum  frequency available to IXP46x is 533 MHz.
+ *
+ */
+#define IX_FEATURECTRL_REG_XSCALE_533FREQ   0x0
+
+/**
+ * @ingroup IxFeatureCtrlAPI
+ *
+ * @def IX_FEATURECTRL_REG_XSCALE_667FREQ
+ *
+ * @brief Maximum  frequency available to IXP46x is 667 MHz.
+ *
+ */
+#define IX_FEATURECTRL_REG_XSCALE_667FREQ   0x1
+
+/**
+ * @ingroup IxFeatureCtrlAPI
+ *
+ * @def IX_FEATURECTRL_REG_XSCALE_400FREQ
+ *
+ * @brief Maximum  frequency available to IXP46x is 400 MHz.
+ *
+ */
+#define IX_FEATURECTRL_REG_XSCALE_400FREQ   0x2
+
+/**
+ * @ingroup IxFeatureCtrlAPI
+ *
+ * @def IX_FEATURECTRL_REG_XSCALE_266FREQ
+ *
+ * @brief Maximum  frequency available to IXP46x is 266 MHz.
+ *
+ */
+#define IX_FEATURECTRL_REG_XSCALE_266FREQ   0x3
+
+#endif /* __ixp46X */
+
+/**
+ * @ingroup IxFeatureCtrlAPI
+ *
+ * @def IX_FEATURECTRL_COMPONENT_NOT_AVAILABLE
+ *
+ * @brief Component selected is not available for device
+ *
+ */
+#define IX_FEATURECTRL_COMPONENT_NOT_AVAILABLE  0x0000
+
+/**
+ * @ingroup IxFeatureCtrlAPI
+ *
+ * @def IX_FEATURECTRL_COMPONENT_ALWAYS_AVAILABLE
+ *
+ * @brief Component selected is not available for device
+ *
+ */
+#define IX_FEATURECTRL_COMPONENT_ALWAYS_AVAILABLE  0xffff
+
+/**
+ * @defgroup IxFeatureCtrlSwConfig Software Configuration for Access Component
+ *
+ * @ingroup IxFeatureCtrlAPI 
+ *
+ * @brief This section describes software configuration in access component. The
+ *        configuration can be changed at run-time. ixFeatureCtrlSwConfigurationCheck( )
+ *        will be used across applicable access component to check the configuration.
+ *        ixFeatureCtrlSwConfigurationWrite( ) is used to write the software configuration.
+ *
+ * @note <b>All software configurations are default to be enabled.</b> 
+ *
+ * @{
+ */
+/**
+ * @ingroup IxFeatureCtrlSwConfig
+ *
+ * @def IX_FEATURE_CTRL_SWCONFIG_DISABLED
+ *
+ * @brief Software configuration is disabled. 
+ * 
+ */
+#define IX_FEATURE_CTRL_SWCONFIG_DISABLED 0  
+
+/**
+ * @ingroup IxFeatureCtrlSwConfig
+ *
+ * @def IX_FEATURE_CTRL_SWCONFIG_ENABLED
+ *
+ * @brief Software configuration is enabled. 
+ * 
+ */
+#define IX_FEATURE_CTRL_SWCONFIG_ENABLED 1  
+
+/**
+ * Section for enums
+ **/
+
+/**
+ * @ingroup IxFeatureCtrlBuildDevice
+ *
+ * @enum IxFeatureCtrlBuildDevice
+ *
+ * @brief Indicates software build type.
+ *
+ * Default build type is IXP42X
+ *
+ */
+typedef enum
+{
+    IX_FEATURE_CTRL_SW_BUILD_IXP42X = 0, /**<Build type is IXP42X */
+    IX_FEATURE_CTRL_SW_BUILD_IXP46X      /**<Build type is IXP46X */
+} IxFeatureCtrlBuildDevice;
+
+/**
+ * @ingroup IxFeatureCtrlSwConfig
+ *
+ * @enum IxFeatureCtrlSwConfig
+ *
+ * @brief Enumeration for software configuration in access components.
+ *
+ * Entry for new run-time software configuration should be added here.
+ */
+typedef enum
+{
+    IX_FEATURECTRL_ETH_LEARNING = 0,       /**< EthDB Learning Feature */
+    IX_FEATURECTRL_ORIGB0_DISPATCHER,  /**< IXP42X B0 and IXP46X dispatcher without 
+                                            livelock prevention functionality Feature */
+    IX_FEATURECTRL_SWCONFIG_MAX        /**< Maximum boudary for IxFeatureCtrlSwConfig  */
+} IxFeatureCtrlSwConfig;
+
+
+/************************************************************************
+ * IXP400 Feature Control Register
+ * - It contains the information (available/unavailable) of IXP425&IXP46X
+ *   hardware components in their corresponding bit location.
+ * - Bit value of 0 means the hardware component is available
+ *   or not software disabled. Hardware component that is available
+ *   can be software disabled.
+ * - Bit value of 1 means the hardware is unavailable or software
+ *   disabled.Hardware component that is unavailable cannot be software
+ *   enabled.
+ * - Use ixFeatureCtrlHwCapabilityRead() to read the hardware component's
+ *   availability.
+ * - Use ixFeatureCtrlRead() to get the current IXP425/IXP46X feature control
+ *   register value.
+ *
+ *   Bit            Field Description (Hardware Component Availability)
+ *   ---            ---------------------------------------------------
+ *    0             RComp Circuitry
+ *    1             USB Controller
+ *    2             Hashing Coprocessor
+ *    3             AES Coprocessor
+ *    4             DES Coprocessor
+ *    5             HDLC Coprocessor
+ *    6             AAL Coprocessor         - Always available in IXP46X
+ *    7             HSS Coprocesspr
+ *    8             Utopia Coprocessor
+ *    9             Ethernet 0 Coprocessor
+ *   10             Ethernet 1 Coprocessor
+ *   11             NPE A
+ *   12             NPE B
+ *   13             NPE C
+ *   14             PCI Controller
+ *   15             ECC/TimeSync Coprocessor -  Only applicable to IXP46X
+ *  16-17           Utopia PHY Limit Status : 0x0 - 32 PHY
+ *                                            0x1 - 16 PHY
+ *                                            0x2 -  8 PHY
+ *                                            0x3 -  4 PHY
+ *
+ *  Portions below are only applicable to IXP46X
+ *   18             USB Host Coprocessor
+ *   19             NPE A Ethernet - 0 for Enable if Utopia = 1
+ *   20             NPE B Ethernet coprocessor 1-3.
+ *   21             RSA Crypto Block coprocessor.
+ *  22-23           Processor frequency : 0x0 - 533 MHz
+ *                                        0x1 - 667 MHz
+ *                                        0x2 - 400 MHz
+ *                                        0x3 - 266 MHz
+ *  24-31           Reserved
+ *
+ ************************************************************************/
+/*Section generic to both IXP42X and IXP46X*/
+
+/**
+ * @ingroup IxFeatureCtrlAPI
+ *
+ * @enum IxFeatureCtrlComponentType
+ *
+ * @brief Enumeration for components availavble
+ *
+ */
+typedef enum
+{
+    IX_FEATURECTRL_RCOMP = 0, /**<bit location for RComp Circuitry*/
+    IX_FEATURECTRL_USB,       /**<bit location for USB Controller*/
+    IX_FEATURECTRL_HASH,      /**<bit location for Hashing Coprocessor*/
+    IX_FEATURECTRL_AES,       /**<bit location for AES Coprocessor*/
+    IX_FEATURECTRL_DES,       /**<bit location for DES Coprocessor*/
+    IX_FEATURECTRL_HDLC,      /**<bit location for HDLC Coprocessor*/
+    IX_FEATURECTRL_AAL,       /**<bit location for AAL Coprocessor*/
+    IX_FEATURECTRL_HSS,       /**<bit location for HSS Coprocessor*/
+    IX_FEATURECTRL_UTOPIA,    /**<bit location for UTOPIA Coprocessor*/
+    IX_FEATURECTRL_ETH0,      /**<bit location for Ethernet 0 Coprocessor*/
+    IX_FEATURECTRL_ETH1,      /**<bit location for Ethernet 1 Coprocessor*/
+    IX_FEATURECTRL_NPEA,      /**<bit location for NPE A*/
+    IX_FEATURECTRL_NPEB,      /**<bit location for NPE B*/
+    IX_FEATURECTRL_NPEC,      /**<bit location for NPE C*/
+    IX_FEATURECTRL_PCI,       /**<bit location for PCI Controller*/
+    IX_FEATURECTRL_ECC_TIMESYNC,     /**<bit location for TimeSync Coprocessor*/
+    IX_FEATURECTRL_UTOPIA_PHY_LIMIT, /**<bit location for Utopia PHY Limit Status*/
+    IX_FEATURECTRL_UTOPIA_PHY_LIMIT_BIT2, /**<2nd bit of PHY limit status*/
+    IX_FEATURECTRL_USB_HOST_CONTROLLER, /**<bit location for USB host controller*/
+    IX_FEATURECTRL_NPEA_ETH,  /**<bit location for NPE-A Ethernet Disable*/
+    IX_FEATURECTRL_NPEB_ETH,  /**<bit location for NPE-B Ethernet 1-3 Coprocessors Disable*/
+    IX_FEATURECTRL_RSA,       /**<bit location for RSA Crypto block Coprocessors Disable*/
+    IX_FEATURECTRL_XSCALE_MAX_FREQ, /**<bit location for XScale max frequency*/
+    IX_FEATURECTRL_XSCALE_MAX_FREQ_BIT2, /**<2nd xscale max freq bit NOT TO BE USED */
+    IX_FEATURECTRL_MAX_COMPONENTS
+} IxFeatureCtrlComponentType;
+
+/**
+ * @ingroup IxFeatureCtrlDeviceId
+ *
+ * @enum IxFeatureCtrlDeviceId
+ *
+ * @brief Enumeration for device type.
+ *
+ * @warning This enum is closely related to the npe image. Its format should comply
+ *          with formats used in the npe image ImageID. This is indicated by the  
+ *          first nibble of the image ID. This should also be in sync with the
+ *          with what is defined in CP15.  Current available formats are
+ *          - IXP42X - 0000
+ *          - IXP46X - 0001
+ *
+ */
+typedef enum
+{
+    IX_FEATURE_CTRL_DEVICE_TYPE_IXP42X = 0, /**<Device type is IXP42X */
+    IX_FEATURE_CTRL_DEVICE_TYPE_IXP46X, /**<Device type is IXP46X */
+    IX_FEATURE_CTRL_DEVICE_TYPE_MAX /**<Max devices */
+} IxFeatureCtrlDeviceId;
+
+
+/**
+ * @} addtogroup IxFeatureCtrlSwConfig
+ */
+
+/*
+ * Typedefs
+ */
+
+/**
+ * @ingroup IxFeatureCtrlAPI 
+ * 
+ * @typedef IxFeatureCtrlReg
+ *
+ * @brief Feature Control Register that contains hardware components'
+ *        availability information.
+ */
+typedef UINT32 IxFeatureCtrlReg;
+
+/**
+ * @ingroup IxFeatureCtrlAPI 
+ * 
+ * @typedef IxFeatureCtrlProductId
+ *
+ * @brief Product ID of Silicon that contains Silicon Stepping and 
+ *        Maximum XScale Core Frequency information.  
+ */
+typedef UINT32 IxFeatureCtrlProductId;
+
+/*
+ * Prototypes for interface functions
+ */
+
+/**
+ * @ingroup IxFeatureCtrlAPI 
+ *
+ * @fn IxFeatureCtrlReg ixFeatureCtrlRead (void)
+ * 
+ * @brief This function reads out the CURRENT value of Feature Control Register.
+ *        The current value may not be the same as that of the hardware component 
+ *        availability.    
+ * 
+ * The bit location of each hardware component is defined above. 
+ * A value of '1' in bit means the hardware component is not available.  A value of '0'   
+ * means the hardware component is available.
+ *
+ * @return 
+ *      - IxFeatureCtrlReg - the current value of IXP400 Feature Control Register
+ */ 
+PUBLIC IxFeatureCtrlReg
+ixFeatureCtrlRead (void);
+
+/**
+ * @ingroup IxFeatureCtrlAPI
+ *
+ * @fn IxFeatureDeviceId ixFeatureCtrlDeviceRead (void)
+ *
+ * @brief This function gets the type of device that the software is currently running
+ *        on
+ *
+ * This function reads the feature Ctrl register specifically to obtain the device id.
+ * The definitions of the avilable IDs are as above.
+ *
+ * @return
+ *      - IxFeatureCtrlDeviceId - the type of device currently running
+ */
+IxFeatureCtrlDeviceId
+ixFeatureCtrlDeviceRead (void);
+
+/**
+ * @ingroup IxFeatureCtrlAPI
+ *
+ * @fn IxFeatureCtrlBuildDevice ixFeatureCtrlSoftwareBuildGet (void)
+ *
+ * @brief This function refers to  the value set by the compiler flag to determine
+ *        the type of device the software is built for.
+ *
+ * The function reads the compiler flag to determine the device the software is
+ * built for. When the user executes build in the command line, 
+ * a compile time flag (__ixp42X/__ixp46X is set. This API reads this 
+ * flag and returns the software build type to the calling client.
+ *
+ * @return
+ *      - IxFeatureCtrlBuildDevice - the type of device software is built for.
+ */
+IxFeatureCtrlBuildDevice
+ixFeatureCtrlSoftwareBuildGet (void);
+
+/**
+ * @ingroup IxFeatureCtrlAPI 
+ *
+ * @fn IxFeatureCtrlReg ixFeatureCtrlHwCapabilityRead (void)
+ * 
+ * @brief This function reads out the hardware capability of a silicon type as defined in 
+ * feature control register.This value is different from that returned by 
+ * ixFeatureCtrlRead() because this function returns the actual hardware component
+ * availability.     
+ *
+ * The bit location of each hardware component is defined above. 
+ * A value of '1' in bit means the hardware component is not available.  A value of '0'   
+ * means the hardware component is available.
+ *
+ * @return 
+ *      - IxFeatureCtrlReg - the hardware capability of IXP400. 
+ *
+ * @warning
+ *      - This function must not be called when IXP400 is running as the result
+ *        is undefined.    
+ */ 
+PUBLIC IxFeatureCtrlReg
+ixFeatureCtrlHwCapabilityRead (void);
+
+/**
+ * @ingroup IxFeatureCtrlAPI 
+ *
+ * @fn void ixFeatureCtrlWrite (IxFeatureCtrlReg expUnitReg)
+ * 
+ * @brief This function write the value stored in IxFeatureCtrlReg expUnitReg  
+ *        to the Feature Control Register. 
+ * 
+ * The bit location of each hardware component is defined above.
+ * The write is only effective on available hardware components. Writing '1' in a  
+ * bit will software disable the respective hardware component. A '0' will mean that  
+ * the hardware component will remain to be operable. 
+ *
+ * @param expUnitReg @ref IxFeatureCtrlReg [in] - The value to be written to feature control 
+ *                                          register.
+ *
+ * @return none
+ *
+ */ 
+PUBLIC void
+ixFeatureCtrlWrite (IxFeatureCtrlReg expUnitReg);
+
+/**
+ * @ingroup IxFeatureCtrlAPI 
+ *
+ * @fn IX_STATUS ixFeatureCtrlComponentCheck (IxFeatureCtrlComponentType componentType)
+ * 
+ * @brief This function will check the availability of hardware component specified
+ *        as componentType value. 
+ *
+ *        Usage Example:<br> 
+ *         -  if(IX_FEATURE_CTRL_COMPONENT_DISABLED != 
+ *              ixFeatureCtrlComponentCheck(IX_FEATURECTRL_ETH0)) <br>
+ *         -  if(IX_FEATURE_CTRL_COMPONENT_ENABLED == 
+ *              ixFeatureCtrlComponentCheck(IX_FEATURECTRL_PCI)) <br>
+ *
+ * This function is typically called during component initialization time. 
+ *
+ * @param componentType @ref IxFeatureCtrlComponentType [in] - the type of a component as
+ *        defined above as IX_FEATURECTRL_XXX (Exp: IX_FEATURECTRL_PCI, IX_FEATURECTRL_ETH0)           
+
+ *        
+ * @return 
+ *      - IX_FEATURE_CTRL_COMPONENT_ENABLED if component is available 
+ *      - IX_FEATURE_CTRL_COMPONENT_DISABLED if component is unavailable            
+ */ 
+PUBLIC IX_STATUS
+ixFeatureCtrlComponentCheck (IxFeatureCtrlComponentType componentType);
+
+/**
+ * @ingroup IxFeatureCtrlAPI 
+ * 
+ * @fn IxFeatureCtrlProductId ixFeatureCtrlProductIdRead (void)
+ * 
+ * @brief This function will return IXP400 product ID i.e. CP15,
+ *        Register 0.
+ *                                                
+ * @return 
+ *      - IxFeatureCtrlProductId - the value of product ID.
+ *
+ */ 
+PUBLIC IxFeatureCtrlProductId
+ixFeatureCtrlProductIdRead (void) ;
+
+/**
+ * @ingroup IxFeatureCtrlAPI 
+ *
+ * @fn IX_STATUS ixFeatureCtrlSwConfigurationCheck (IxFeatureCtrlSwConfig swConfigType)
+ * 
+ * @brief This function checks whether the specified software configuration is
+ *        enabled or disabled. 
+ *
+ *        Usage Example:<br> 
+ *        - if(IX_FEATURE_CTRL_SWCONFIG_DISABLED != 
+ *            ixFeatureCtrlSwConfigurationCheck(IX_FEATURECTRL_ETH_LEARNING)) <br>
+ *        - if(IX_FEATURE_CTRL_SWCONFIG_ENABLED == 
+ *            ixFeatureCtrlSwConfigurationCheck(IX_FEATURECTRL_ETH_LEARNING)) <br>
+ *
+ * This function is typically called during access component initialization time. 
+ *
+ * @param swConfigType @ref IxFeatureCtrlSwConfig [in] - the type of a software configuration
+ *        defined in IxFeatureCtrlSwConfig enumeration.          
+ *        
+ * @return 
+ *      - IX_FEATURE_CTRL_SWCONFIG_ENABLED if software configuration is enabled. 
+ *      - IX_FEATURE_CTRL_SWCONFIG_DISABLED if software configuration is disabled.            
+ */ 
+PUBLIC IX_STATUS
+ixFeatureCtrlSwConfigurationCheck (IxFeatureCtrlSwConfig swConfigType);
+
+/**
+ * @ingroup IxFeatureCtrlAPI 
+ *
+ * @fn void ixFeatureCtrlSwConfigurationWrite (IxFeatureCtrlSwConfig swConfigType, BOOL enabled)
+ * 
+ * @brief This function enable/disable the specified software configuration.  
+ *
+ *        Usage Example:<br> 
+ *        - ixFeatureCtrlSwConfigurationWrite(IX_FEATURECTRL_ETH_LEARNING, TRUE) is used
+ *          to enable Ethernet Learning Feature <br>
+ *        - ixFeatureCtrlSwConfigurationWrite(IX_FEATURECTRL_ETH_LEARNING, FALSE) is used
+ *          to disable Ethernet Learning Feature <br> 
+ *
+ * @param swConfigType IxFeatureCtrlSwConfig [in] - the type of a software configuration
+ *        defined in IxFeatureCtrlSwConfig enumeration. 
+ * @param enabled BOOL [in] - To enable(TRUE) / disable (FALSE) the specified software
+ *                           configuration.            
+ *
+ * @return none
+ *          
+ */ 
+PUBLIC void
+ixFeatureCtrlSwConfigurationWrite (IxFeatureCtrlSwConfig swConfigType, BOOL enabled);
+
+/**
+ * @ingroup IxFeatureCtrlAPI 
+ *
+ * @fn void ixFeatureCtrlIxp400SwVersionShow (void)
+ * 
+ * @brief This function shows the current software release information for IXP400 
+ *          
+ * @return none
+ *          
+ */ 
+PUBLIC void
+ixFeatureCtrlIxp400SwVersionShow (void);
+
+#endif /* IXFEATURECTRL_H */
+
+/**
+ * @} defgroup IxFeatureCtrlAPI
+ */