65 lines
4.2 KiB
C
65 lines
4.2 KiB
C
|
// #################################################################################################
|
||
|
|
// # << NEORV32: neorv32_cfs.c - Custom Functions Subsystem (CFS) HW Driver (stub) >> #
|
||
|
|
// # ********************************************************************************************* #
|
||
|
|
// # BSD 3-Clause License #
|
||
|
|
// # #
|
||
|
|
// # Copyright (c) 2022, 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. #
|
||
|
|
// # #
|
||
|
|
// # 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 HOLDER 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. #
|
||
|
|
// # ********************************************************************************************* #
|
||
|
|
// # The NEORV32 Processor - https://github.com/stnolting/neorv32 (c) Stephan Nolting #
|
||
|
|
// #################################################################################################
|
||
|
|
|
||
|
|
|
||
|
|
/**********************************************************************//**
|
||
|
|
* @file neorv32_cfs.c
|
||
|
|
* @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 subsystem was synthesized.
|
||
|
|
*
|
||
|
|
* @return 0 if CFS was not synthesized, 1 if CFS is available.
|
||
|
|
**************************************************************************/
|
||
|
|
int neorv32_cfs_available(void) {
|
||
|
|
|
||
|
|
if (NEORV32_SYSINFO->SOC & (1 << SYSINFO_SOC_IO_CFS)) {
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|