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//=============================================================================
//
// hal_diag.c
//
// HAL diagnostic output code
//
//=============================================================================
// ####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
// Contributors: nickg, jskov
// Date: 1999-03-23
// Purpose: HAL diagnostic output
// Description: Implementations of HAL diagnostic output support.
//
//####DESCRIPTIONEND####
//
//=============================================================================
#include <pkgconf/hal.h>
#include <cyg/hal/hal_diag.h> // our header.
#include <cyg/infra/cyg_type.h> // base types, externC
#include <cyg/hal/hal_io.h> // IO macros
#include <cyg/hal/hal_if.h> // Calling interface
#include <cyg/hal/hal_intr.h> // Interrupt macros
#include <cyg/hal/sh3_sci.h> // driver API
#include <cyg/hal/hal_misc.h> // Helper functions
#define SCI_BASE ((cyg_uint8*)0xfffffe80)
//-----------------------------------------------------------------------------
void
cyg_hal_plf_comms_init(void)
{
static int initialized = 0;
if (initialized)
return;
initialized = 1;
cyg_hal_plf_sci_init(0, 0, CYGNUM_HAL_INTERRUPT_SCI_RXI, SCI_BASE);
}
//=============================================================================
// Led control
//=============================================================================
#define LED_ON 0x04000000
#define LED_OFF 0x18000000
void
hal_diag_led_on( void )
{
HAL_WRITE_UINT8(LED_ON, 0);
}
void
hal_diag_led_off( void )
{
HAL_WRITE_UINT8(LED_OFF, 0);
}
//=============================================================================
// Compatibility with older stubs
//=============================================================================
#ifndef CYGSEM_HAL_VIRTUAL_VECTOR_DIAG
#define CYGPRI_HAL_SH_SH3_SCI_PRIVATE
#include <cyg/hal/sh3_sci.h> // driver API
static channel_data_t channel = { (cyg_uint8*)SCI_BASE, 0, 0};
#if defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS)
#include <cyg/hal/hal_stub.h> // hal_output_gdb_string
#endif
#if defined(CYGSEM_HAL_USE_ROM_MONITOR_GDB_stubs)
#define CYG_HAL_DIAG_GDB
#elif defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS)
#define CYG_HAL_DIAG_GDB
#endif
//-----------------------------------------------------------------------------
void hal_diag_init(void)
{
cyg_hal_plf_sci_init_channel(&channel);
}
void
hal_diag_write_char_serial( char c )
{
cyg_hal_plf_sci_putc(&channel, c);
}
void
hal_diag_read_char(char *c)
{
*c = (char) cyg_hal_plf_sci_getc(&channel);
}
// Packet function
void
hal_diag_write_char(char c)
{
#ifdef CYG_HAL_DIAG_GDB
static char line[100];
static int pos = 0;
// No need to send CRs
if( c == '\r' ) return;
line[pos++] = c;
if( c == '\n' || pos == sizeof(line) )
{
CYG_INTERRUPT_STATE old;
// Disable interrupts. This prevents GDB trying to interrupt us
// while we are in the middle of sending a packet. The serial
// receive interrupt will be seen when we re-enable interrupts
// later.
#ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
CYG_HAL_GDB_ENTER_CRITICAL_IO_REGION(old);
#else
HAL_DISABLE_INTERRUPTS(old);
#endif
while(1)
{
char c1;
static char hex[] = "0123456789ABCDEF";
cyg_uint8 csum = 0;
int i;
cyg_hal_plf_sci_putc(&channel, '$');
cyg_hal_plf_sci_putc(&channel, 'O');
csum += 'O';
for( i = 0; i < pos; i++ )
{
char ch = line[i];
char h = hex[(ch>>4)&0xF];
char l = hex[ch&0xF];
cyg_hal_plf_sci_putc(&channel, h);
cyg_hal_plf_sci_putc(&channel, l);
csum += h;
csum += l;
}
cyg_hal_plf_sci_putc(&channel, '#');
cyg_hal_plf_sci_putc(&channel, hex[(csum>>4)&0xF]);
cyg_hal_plf_sci_putc(&channel, hex[csum&0xF]);
// Wait for the ACK character '+' from GDB here and handle
// receiving a ^C instead.
c1 = (char) cyg_hal_plf_sci_getc(&channel);
if( c1 == '+' )
break; // a good acknowledge
// Check for user break.
if( cyg_hal_is_break( &c1, 1 ) )
cyg_hal_user_break( NULL );
// otherwise, loop round again
}
pos = 0;
// And re-enable interrupts
#ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
CYG_HAL_GDB_LEAVE_CRITICAL_IO_REGION(old);
#else
HAL_RESTORE_INTERRUPTS(old);
#endif
}
#else // CYG_HAL_DIAG_GDB
cyg_hal_plf_sci_putc(&channel, c);
#endif
}
#endif // CYGSEM_HAL_VIRTUAL_VECTOR_DIAG
//-----------------------------------------------------------------------------
// End of hal_diag.c
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