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//=============================================================================
//
// plf_stub.c
//
// Platform specific code for GDB stub support.
//
//=============================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 or (at your option) any later
// version.
//
// eCos is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License
// along with eCos; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// As a special exception, if other files instantiate templates or use
// macros or inline functions from this file, or you compile this file
// and link it with other works to produce a work based on this file,
// this file does not by itself cause the resulting work to be covered by
// the GNU General Public License. However the source code for this file
// must still be made available in accordance with section (3) of the GNU
// General Public License v2.
//
// This exception does not invalidate any other reasons why a work based
// on this file might be covered by the GNU General Public License.
// -------------------------------------------
// ####ECOSGPLCOPYRIGHTEND####
//=============================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s): nickg, jskov (based on the old tx39 hal_stub.c)
// Contributors:nickg, jskov
// Date: 1999-02-12
// Purpose: Platform specific code for GDB stub support.
//
//####DESCRIPTIONEND####
//
//=============================================================================
#include <pkgconf/hal.h>
#ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
#include <cyg/hal/hal_stub.h>
#include <cyg/hal/hal_io.h> // HAL IO macros
#include <cyg/hal/hal_diag.h> // diag output. FIXME
//-----------------------------------------------------------------------------
// Serial definitions.
#define DIAG_BASE 0xfffff300
#define DIAG_SLCR (DIAG_BASE+0x00)
#define DIAG_SLSR (DIAG_BASE+0x04)
#define DIAG_SLDICR (DIAG_BASE+0x08)
#define DIAG_SLDISR (DIAG_BASE+0x0C)
#define DIAG_SFCR (DIAG_BASE+0x10)
#define DIAG_SBRG (DIAG_BASE+0x14)
#define DIAG_TFIFO (DIAG_BASE+0x20)
#define DIAG_RFIFO (DIAG_BASE+0x30)
#define BRG_T0 0x0000
#define BRG_T2 0x0100
#define BRG_T4 0x0200
#define BRG_T5 0x0300
//-----------------------------------------------------------------------------
// Initialize the current serial port.
void hal_jmr_init_serial( void )
{
//hal_diag_led(0x10);
HAL_WRITE_UINT16( DIAG_SLCR , 0x0020 );
HAL_WRITE_UINT16( DIAG_SLDICR , 0x0000 );
HAL_WRITE_UINT16( DIAG_SFCR , 0x0000 );
// HAL_WRITE_UINT16( DIAG_SBRG , BRG_T2 | 20 );
// HAL_WRITE_UINT16( DIAG_SBRG , BRG_T2 | 10 );
HAL_WRITE_UINT16( DIAG_SBRG , BRG_T2 | 5 );
//hal_diag_led(0x10);
}
// Write C to the current serial port.
void hal_jmr_put_char( int c )
{
CYG_WORD16 disr;
//hal_diag_led(0x20);
for(;;)
{
HAL_READ_UINT16( DIAG_SLDISR , disr );
if( disr & 0x0002 ) break;
}
disr = disr & ~0x0002;
HAL_WRITE_UINT8( DIAG_TFIFO, c );
HAL_WRITE_UINT16( DIAG_SLDISR , disr );
//hal_diag_led(0x20);
// HAL_DIAG_WRITE_CHAR( c );
}
// Read one character from the current serial port.
int hal_jmr_get_char( void )
{
#ifdef CYGPKG_HAL_MIPS_SIM
// FIXME: ask nickg if this can go to /dev/null
static char input[] = "+$s#73";
static int i = 0;
return input[i++];
#else
char c;
CYG_WORD16 disr;
//hal_diag_led(0x40);
for(;;)
{
HAL_READ_UINT16( DIAG_SLDISR , disr );
if( disr & 0x0001 ) break;
}
disr = disr & ~0x0001;
HAL_READ_UINT8( DIAG_RFIFO, c );
HAL_WRITE_UINT16( DIAG_SLDISR , disr );
//hal_diag_led(0x40);
// HAL_DIAG_READ_CHAR(c);
// diag_printf("<%02x:%c>",c);
return c;
#endif
}
#endif // ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
//-----------------------------------------------------------------------------
// End of plf_stub.c
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