bsp.h

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/* SPDX-License-Identifier: BSD-2-Clause */
 
/*
 * COPYRIGHT (c) 1995 by i-cubed ltd.
 *
 *  To anyone who acknowledges that this file is provided "AS IS"
 *  without any express or implied warranty:
 *      permission to use, copy, modify, and distribute this file
 *      for any purpose is hereby granted without fee, provided that
 *      the above copyright notice and this notice appears in all
 *      copies, and that the name of i-cubed limited not be used in
 *      advertising or publicity pertaining to distribution of the
 *      software without specific, written prior permission.
 *      i-cubed limited makes no representations about the suitability
 *      of this software for any purpose.
*/
/*
 * Copyright (C) 1989, 1999 On-Line Applications Research Corporation (OAR)
 * Copyright (C) 1998 IMD Ingenieurbuero fuer Microcomputertechnik
 *
 * 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.
 *
 * 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.
 */
 
 
/*
 * derived from helas403/include/bsp.h:
 *  Id: bsp.h,v 1.4 2001/06/18 17:01:48 joel Exp
 *  Author: Thomas Doerfler <td@imd.m.isar.de>
 *              IMD Ingenieurbuero fuer Microcomputertechnik
 *
 *  Changes from IMD are covered by the original distributions terms.
 *  This file has been derived from the papyrus BSP.
 *
 *  Author: Andrew Bray <andy@i-cubed.co.uk>
 *
 *  Derived from bsps/no_cpu/no_bsp/include/bsp.h
 */
 
#ifndef LIBBSP_POWERPC_VIRTEX5_BSP_H
#define LIBBSP_POWERPC_VIRTEX5_BSP_H
 
#include <bspopts.h>
 
/*
 *  confdefs.h overrides for this BSP:
 *   - Interrupt stack space is not minimum if defined.
 */
#define BSP_INTERRUPT_STACK_SIZE  (16 * 1024)
 
#ifdef ASM
/* Definition of where to store registers in alignment handler */
#define ALIGN_REGS 0x0140
 
#else
#include <rtems.h>
#include <bsp/default-initial-extension.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
/*
 * Bus Frequency
 */
extern unsigned int BSP_bus_frequency;
/*
 * Processor Clock Frequency
 */
extern unsigned int BSP_processor_frequency;
/*
 * Time base divisior (how many tick for 1 second).
 */
extern unsigned int BSP_time_base_divisor;
 
/*
 * Macro used by shared MPC6xx timer driver
 */
#define BSP_Convert_decrementer( _value ) \
  ((unsigned long long) ((((unsigned long long)BSP_time_base_divisor) * 1000000ULL) /((unsigned long long) BSP_bus_frequency)) * ((unsigned long long) (_value)))
 
/*
 *  Interfaces to required Clock Driver support methods
 */
int BSP_disconnect_clock_handler(void);
int BSP_connect_clock_handler(void);
 
/*
 * Prototypes for BSP methods shared across file boundaries
 */
void zero_bss(void);
 
#endif /* ASM */
 
#ifdef __cplusplus
}
#endif
 
#endif