93 lines
3.5 KiB
C
93 lines
3.5 KiB
C
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/************************************************************************************
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* common/up_arch.h
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*
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* Copyright (C) 2007 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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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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*
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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
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name Gregory Nutt nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* 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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************************************************************************************/
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#ifndef __UP_ARCH_H
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#define __UP_ARCH_H
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/************************************************************************************
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* Included Files
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************************************************************************************/
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#include <nuttx/config.h>
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#ifndef __ASSEMBLY__
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# include <sys/types.h>
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#endif
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#include "arm.h"
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#include <arch/board/board.h>
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#include "chip.h"
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/************************************************************************************
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* Definitions
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************************************************************************************/
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/************************************************************************************
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* Inline Functions
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************************************************************************************/
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#ifndef __ASSEMBLY__
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# define getreg8(a) (*(volatile ubyte *)(a))
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# define putreg8(v,a) (*(volatile ubyte *)(a) = (v))
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# define getreg32(a) (*(volatile uint32 *)(a))
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# define putreg32(v,a) (*(volatile uint32 *)(a) = (v))
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/* Some compiler options will convert short loads and stores into byte loads
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* and stores. We don't want this to happen for IO reads and writes!
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*/
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/* # define getreg16(a) (*(volatile uint16 *)(a)) */
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static inline uint16 getreg16(unsigned int addr)
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{
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uint16 retval;
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__asm__ __volatile__("\tldrh %0, [%1]\n\t" : "=r"(retval) : "r"(addr));
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return retval;
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}
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/* define putreg16(v,a) (*(volatile uint16 *)(a) = (v)) */
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static inline void putreg16(uint16 val, unsigned int addr)
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{
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__asm__ __volatile__("\tstrh %0, [%1]\n\t": : "r"(val), "r"(addr));
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}
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/* Most DM320 registers are 16-bits wide */
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#define getreg(a) getreg16(1)
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#define putreg(v,a) putreg16(v,a)
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#endif
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#endif /* __UP_ARCH_H */
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