forked from Imagelibrary/rtems
115 lines
3.3 KiB
C
115 lines
3.3 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/**
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* @file
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*
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* @ingroup RTEMSBSPsMIPSHurricane
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*
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* @brief Global BSP definitions.
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*/
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/*
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* COPYRIGHT (c) 1989-2012.
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* On-Line Applications Research Corporation (OAR).
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef LIBBSP_MIPS_HURRICANE_BSP_H
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#define LIBBSP_MIPS_HURRICANE_BSP_H
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/**
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* @defgroup RTEMSBSPsMIPSHurricane Hurricane
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*
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* @ingroup RTEMSBSPsMIPS
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*
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* @brief Hurricane Board Support Package.
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*
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* @{
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*/
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#ifndef ASM
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#include <bspopts.h>
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#include <bsp/default-initial-extension.h>
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#include <rtems.h>
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#include <libcpu/rm5231.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern void WriteDisplay( char * string );
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extern uint32_t mips_get_timer( void );
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#define BSP_FEATURE_IRQ_EXTENSION
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#define BSP_SHARED_HANDLER_SUPPORT 1
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#define CPU_CLOCK_RATE_MHZ (200)
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#define CLOCKS_PER_MICROSECOND ( CPU_CLOCK_RATE_MHZ ) /* equivalent to CPU clock speed in MHz */
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/*
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* Simple spin delay in microsecond units for device drivers.
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* This is very dependent on the clock speed of the target.
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*
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* NOTE: This macro generates a warning like "integer constant out
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* of range" which is safe to ignore. In 64 bit mode, unsigned32
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* types are actually 64 bits long so that comparisons between
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* unsigned32 types and pointers are valid. The warning is caused
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* by code in the delay macro that is necessary for 64 bit mode.
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*/
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#define rtems_bsp_delay( microseconds ) \
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{ \
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uint32_t _end_clock = \
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mips_get_timer() + microseconds * CLOCKS_PER_MICROSECOND; \
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_end_clock %= 0x100000000; /* make sure result is 32 bits */ \
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\
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/* handle timer overflow, if necessary */ \
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while ( _end_clock < mips_get_timer() ); \
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\
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while ( _end_clock > mips_get_timer() ); \
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}
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/* Constants */
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#define RAM_START 0
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#define RAM_END 0x100000
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/*
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* Prototypes for methods called from .S for dependency tracking
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*/
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void init_tlb(void);
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void resettlb(int i);
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#ifdef __cplusplus
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}
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#endif
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#endif /* !ASM */
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/** @} */
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#endif /* __HURRICANE_BSP_h */
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