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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): jskov
// Contributors:nickg, jskov
// Date: 2000-05-10
// Purpose: HAL diagnostic output
// Description: Implementations of HAL diagnostic output support.
//
//####DESCRIPTIONEND####
//
//=============================================================================
#include <pkgconf/hal.h>
#if !defined(CYGSEM_HAL_VIRTUAL_VECTOR_DIAG)
#include <cyg/infra/cyg_type.h> // base types
#include <cyg/infra/cyg_trac.h> // tracing macros
#include <cyg/infra/cyg_ass.h> // assertion macros
#include <cyg/hal/hal_arch.h>
#include <cyg/hal/hal_diag.h>
#include <cyg/hal/hal_intr.h>
#include <cyg/hal/hal_misc.h> // Helper functions
#include <cyg/hal/hal_io.h>
#include <cyg/hal/hal_if.h> // ROM calling interface
#if defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS)
#include <cyg/hal/hal_stub.h> // CYG_HAL_GDB_x_CRITICAL_IO_REGION
#endif
externC void cyg_hal_plf_serial_init_channel(void* __ch_data);
externC void cyg_hal_plf_serial_putc(void* __ch_data, cyg_uint8 __ch);
externC cyg_uint8 cyg_hal_plf_serial_getc(void* __ch_data);
//-----------------------------------------------------------------------------
// Hit the hardware directly. Either wrap in GDB O-packets, or write
// data raw to device.
// Decide when to wrap text output as GDB O-packets
#if (CYGNUM_HAL_VIRTUAL_VECTOR_DEBUG_CHANNEL \
== CYGNUM_HAL_VIRTUAL_VECTOR_CONSOLE_CHANNEL)
#if defined(CYGSEM_HAL_USE_ROM_MONITOR_GDB_stubs) \
|| defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS)
#define CYG_DIAG_GDB
#endif
#endif
//-----------------------------------------------------------------------------
// There are two serial ports. Hardwire to use one of them.
#define CYG_DEVICE_SERIAL_SCC1 0xb40003f8 // port 1
#define CYG_DEVICE_SERIAL_SCC2 0xb40002f8 // port 2
typedef struct {
cyg_uint8* base;
cyg_int32 msec_timeout;
int isr_vector;
} channel_data_t;
#if (CYGNUM_HAL_VIRTUAL_VECTOR_CONSOLE_CHANNEL == 0)
#define BASE ((cyg_uint8*)CYG_DEVICE_SERIAL_SCC1)
#else
#define BASE ((cyg_uint8*)CYG_DEVICE_SERIAL_SCC2)
#endif
static channel_data_t channel = { BASE, 0, 0};
#ifdef CYG_DIAG_GDB
void
hal_diag_write_char(char c)
{
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)
{
static char hex[] = "0123456789ABCDEF";
cyg_uint8 csum = 0;
int i;
char c1;
cyg_hal_plf_serial_putc(&channel, '$');
cyg_hal_plf_serial_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_serial_putc(&channel, h);
cyg_hal_plf_serial_putc(&channel, l);
csum += h;
csum += l;
}
cyg_hal_plf_serial_putc(&channel, '#');
cyg_hal_plf_serial_putc(&channel, hex[(csum>>4)&0xF]);
cyg_hal_plf_serial_putc(&channel, hex[csum&0xF]);
c1 = cyg_hal_plf_serial_getc(&channel);
if( c1 == '+' ) break;
}
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
}
}
void
hal_diag_read_char(char *c)
{
*c = cyg_hal_plf_serial_getc(&channel);
}
#else // CYG_DIAG_GDB
// Hit the hardware directly, no GDB translation
void
hal_diag_read_char(char *c)
{
*c = cyg_hal_plf_serial_getc(&channel);
}
void
hal_diag_write_char(char c)
{
cyg_hal_plf_serial_putc(&channel, c);
}
#endif
// Reagardless whether encoding or not we alway initialize the device.
void
hal_diag_init(void)
{
// Init serial device
cyg_hal_plf_serial_init_channel((void*)&channel);
}
#endif // CYGSEM_HAL_VIRTUAL_VECTOR_DIAG
//-----------------------------------------------------------------------------
// End of hal_diag.c
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