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//==========================================================================
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//
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// plf_misc.c
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//
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// HAL platform miscellaneous functions
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//
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//==========================================================================
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// ####ECOSGPLCOPYRIGHTBEGIN####
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// -------------------------------------------
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// This file is part of eCos, the Embedded Configurable Operating System.
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// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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//
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// eCos is free software; you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation; either version 2 or (at your option) any later
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// version.
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//
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// eCos is distributed in the hope that it will be useful, but WITHOUT
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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// for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with eCos; if not, write to the Free Software Foundation, Inc.,
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// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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// As a special exception, if other files instantiate templates or use
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// macros or inline functions from this file, or you compile this file
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// and link it with other works to produce a work based on this file,
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// this file does not by itself cause the resulting work to be covered by
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// the GNU General Public License. However the source code for this file
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// must still be made available in accordance with section (3) of the GNU
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// General Public License v2.
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//
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// This exception does not invalidate any other reasons why a work based
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// on this file might be covered by the GNU General Public License.
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// -------------------------------------------
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// ####ECOSGPLCOPYRIGHTEND####
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//==========================================================================
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//#####DESCRIPTIONBEGIN####
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//
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// Author(s): yoshinori sato
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// Contributors: yoshinori sato
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// Date: 2002-02-17
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// Purpose: HAL miscellaneous functions
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// Description: This file contains miscellaneous functions provided by the
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// HAL.
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//
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//####DESCRIPTIONEND####
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//
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//========================================================================*/
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#include <pkgconf/hal.h>
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#include <cyg/infra/cyg_type.h> // Base types
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#include <cyg/hal/hal_arch.h> // architectural definitions
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#include <cyg/hal/hal_io.h>
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#include <cyg/hal/hal_if.h>
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#include <cyg/hal/plf_intr.h>
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#include <cyg/hal/var_arch.h>
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/*------------------------------------------------------------------------*/
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void hal_platform_init(void)
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{
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hal_if_init();
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}
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void h8300h_reset(void)
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{
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__asm__ ("jmp @@0\n\t");
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}
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/*------------------------------------------------------------------------*/
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/* Control C ISR support */
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#if defined(CYGDBG_HAL_DEBUG_GDB_CTRLC_SUPPORT)
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struct Hal_SavedRegisters *hal_saved_interrupt_state;
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#endif
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/*------------------------------------------------------------------------*/
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/* clock support */
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void hal_clock_initialize(cyg_uint32 period)
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{
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CYG_BYTE prescale;
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#if CYGNUM_HAL_H8300_RTC_PRESCALE == 8
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prescale = 0x01;
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#else
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#if CYGNUM_HAL_H8300_RTC_PRESCALE == 64
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prescale = 0x02;
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#else
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#if CYGNUM_HAL_H8300_RTC_PRESCALE == 8192
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prescale = 0x03;
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#else
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#error illigal RTC prescale setting
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#endif
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#endif
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#endif
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HAL_WRITE_UINT8(CYGARC_TCORA3,period);
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HAL_WRITE_UINT8(CYGARC_8TCNT3,0x00);
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HAL_WRITE_UINT8(CYGARC_8TCR3,0x48 | prescale);
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HAL_WRITE_UINT8(CYGARC_8TCSR3,0x00);
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}
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void hal_clock_reset(cyg_uint32 vector, cyg_uint32 period)
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{
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HAL_WRITE_UINT8(CYGARC_8TCR3,0x00);
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HAL_WRITE_UINT8(CYGARC_8TCSR3,0x00);
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hal_clock_initialize(period);
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}
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void hal_clock_read(cyg_uint32 *pvalue)
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{
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CYG_BYTE val;
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HAL_READ_UINT8(CYGARC_8TCNT3,val);
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*pvalue = val;
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}
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/*------------------------------------------------------------------------*/
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/* End of plf_misc.c */
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