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[/] [neorv32/] [trunk/] [sw/] [lib/] [source/] [neorv32_cfs.c] - Rev 47

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// #################################################################################################
// # << NEORV32: neorv32_cfs.c - Custom Functions Subsystem (CFS) HW Driver (stub) >>              #
// # ********************************************************************************************* #
// # BSD 3-Clause License                                                                          #
// #                                                                                               #
// # Copyright (c) 2021, Stephan Nolting. All rights reserved.                                     #
// #                                                                                               #
// # 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 copyright holder nor the names of its contributors may be used to  #
// #    endorse or promote products derived from this software without specific prior written      #
// #    permission.                                                                                #
// #                                                                                               #
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// # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF               #
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// # OF THE POSSIBILITY OF SUCH DAMAGE.                                                            #
// # ********************************************************************************************* #
// # The NEORV32 Processor - https://github.com/stnolting/neorv32              (c) Stephan Nolting #
// #################################################################################################
 
 
/**********************************************************************//**
 * @file neorv32_cfs.c
 * @author Stephan Nolting
 * @brief Custom Functions Subsystem (CFS) HW driver source file.
 *
 * @warning There are no "real" CFS driver functions available here, because these functions are defined by the actual hardware.
 * @warning Hence, the CFS designer has to provide the actual driver functions.
 *
 * @note These functions should only be used if the CFS was synthesized (IO_CFS_EN = true).
 **************************************************************************/
 
#include "neorv32.h"
#include "neorv32_cfs.h"
 
 
/**********************************************************************//**
 * Check if custom functions unit 0 was synthesized.
 *
 * @return 0 if CFS was not synthesized, 1 if CFS is available.
 **************************************************************************/
int neorv32_cfs_available(void) {
 
  if (SYSINFO_FEATURES & (1 << SYSINFO_FEATURES_IO_CFS)) {
    return 1;
  }
  else {
    return 0;
  }
}
 
 

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