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//==========================================================================
//
//      plf_misc.c
//
//      HAL platform miscellaneous functions
//
//==========================================================================
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// -------------------------------------------                              
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//
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// for more details.                                                        
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//
// As a special exception, if other files instantiate templates or use      
// macros or inline functions from this file, or you compile this file      
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//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):    yoshinori sato
// Contributors: yoshinori sato
// Date:         2002-02-17
// Purpose:      HAL miscellaneous functions
// Description:  This file contains miscellaneous functions provided by the
//               HAL.
//
//####DESCRIPTIONEND####
//
//========================================================================*/
 
#include <pkgconf/hal.h>
 
#include <cyg/infra/cyg_type.h>         // Base types
 
#include <cyg/hal/hal_arch.h>           // architectural definitions
#include <cyg/hal/hal_io.h>
#include <cyg/hal/hal_if.h>
#include <cyg/hal/plf_intr.h>
#include <cyg/hal/var_arch.h>
 
/*------------------------------------------------------------------------*/
 
void hal_platform_init(void)
{
    hal_if_init();
}
 
void h8300h_reset(void)
{
    __asm__ ("jmp @@0\n\t");
}
 
/*------------------------------------------------------------------------*/
/* Control C ISR support                                                  */
 
#if defined(CYGDBG_HAL_DEBUG_GDB_CTRLC_SUPPORT)
 
struct Hal_SavedRegisters *hal_saved_interrupt_state;
 
#endif
 
/*------------------------------------------------------------------------*/
/* clock support                                                            */
 
void hal_clock_initialize(cyg_uint32 period)
{
    CYG_BYTE prescale;
#if CYGNUM_HAL_H8300_RTC_PRESCALE == 8
    prescale = 0x01;
#else
#if CYGNUM_HAL_H8300_RTC_PRESCALE == 64
    prescale = 0x02;
#else
#if CYGNUM_HAL_H8300_RTC_PRESCALE == 8192
    prescale = 0x03;
#else
#error illigal RTC prescale setting
#endif
#endif
#endif
    HAL_WRITE_UINT8(CYGARC_TCORA3,period);
    HAL_WRITE_UINT8(CYGARC_8TCNT3,0x00);
    HAL_WRITE_UINT8(CYGARC_8TCR3,0x48 | prescale);
    HAL_WRITE_UINT8(CYGARC_8TCSR3,0x00);
}
 
void hal_clock_reset(cyg_uint32 vector, cyg_uint32 period)
{
    HAL_WRITE_UINT8(CYGARC_8TCR3,0x00);
    HAL_WRITE_UINT8(CYGARC_8TCSR3,0x00);
    hal_clock_initialize(period);
}
 
void hal_clock_read(cyg_uint32 *pvalue)
{
    CYG_BYTE val;
    HAL_READ_UINT8(CYGARC_8TCNT3,val);
    *pvalue = val;
}
 
/*------------------------------------------------------------------------*/
/* End of plf_misc.c                                                      */