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//=============================================================================
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//
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// hal_diag.c
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//
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// HAL diagnostic output code
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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 Red Hat, 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 version.
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//
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// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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// 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 along
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// with eCos; if not, write to the Free Software Foundation, Inc.,
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// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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//
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// As a special exception, if other files instantiate templates or use macros
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// or inline functions from this file, or you compile this file and link it
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// with other works to produce a work based on this file, this file does not
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// by itself cause the resulting work to be covered by the GNU General Public
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// License. However the source code for this file must still be made available
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// in accordance with section (3) of the GNU General Public License.
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//
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// This exception does not invalidate any other reasons why a work based on
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// this file might be covered by the GNU General Public License.
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//
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// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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// at http://sources.redhat.com/ecos/ecos-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): nickg, jskov
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// Contributors: nickg, jskov
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// Date: 1999-03-23
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// Purpose: HAL diagnostic output
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// Description: Implementations of HAL diagnostic output support.
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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/hal/hal_diag.h> // our header.
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#include <cyg/infra/cyg_type.h> // base types, externC
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#include <cyg/hal/hal_io.h> // IO macros
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#include <cyg/hal/hal_if.h> // calling interface API
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#include <cyg/hal/hal_intr.h> // Interrupt macros
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#include <cyg/hal/sh4_scif.h> // driver API
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#include <cyg/hal/hal_misc.h> // Helper functions
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#define SCI_BASE ((cyg_uint8*)0xffe80000)
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//-----------------------------------------------------------------------------
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void
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cyg_hal_plf_comms_init(void)
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{
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static int initialized = 0;
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if (initialized)
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return;
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initialized = 1;
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cyg_hal_plf_scif_init(0, 0, CYGNUM_HAL_INTERRUPT_SCIF_RXI, SCI_BASE);
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}
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//=============================================================================
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// Led control
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//=============================================================================
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#define LED 0xb4000000
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void
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hal_diag_led_on( void )
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{
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HAL_WRITE_UINT8(LED, 0x18);
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}
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void
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hal_diag_led_off( void )
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{
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HAL_WRITE_UINT8(LED, 0);
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}
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//=============================================================================
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// Compatibility with older stubs
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//=============================================================================
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#ifndef CYGSEM_HAL_VIRTUAL_VECTOR_DIAG
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#define CYGPRI_HAL_SH_SH4_SCIF_PRIVATE
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#include <cyg/hal/sh4_scif.h> // driver API
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static channel_data_t channel = { (cyg_uint8*)SCI_BASE, 0, 0};
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#if defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS)
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#include <cyg/hal/hal_stub.h> // hal_output_gdb_string
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#endif
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#if defined(CYGSEM_HAL_USE_ROM_MONITOR_GDB_stubs)
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#define CYG_HAL_DIAG_GDB
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#elif defined(CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS)
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#define CYG_HAL_DIAG_GDB
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#endif
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//-----------------------------------------------------------------------------
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void hal_diag_init(void)
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{
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cyg_hal_plf_scif_init_channel(&channel);
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}
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void
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hal_diag_write_char_serial( char c )
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{
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cyg_hal_plf_scif_putc(&channel, c);
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}
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void
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hal_diag_read_char(char *c)
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{
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*c = (char) cyg_hal_plf_scif_getc(&channel);
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}
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// Packet function
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void
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hal_diag_write_char(char c)
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{
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#ifdef CYG_HAL_DIAG_GDB
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static char line[100];
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static int pos = 0;
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// No need to send CRs
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if( c == '\r' ) return;
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line[pos++] = c;
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if( c == '\n' || pos == sizeof(line) )
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{
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CYG_INTERRUPT_STATE old;
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// Disable interrupts. This prevents GDB trying to interrupt us
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// while we are in the middle of sending a packet. The serial
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// receive interrupt will be seen when we re-enable interrupts
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// later.
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#ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
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CYG_HAL_GDB_ENTER_CRITICAL_IO_REGION(old);
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#else
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HAL_DISABLE_INTERRUPTS(old);
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#endif
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while(1)
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{
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char c1;
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static char hex[] = "0123456789ABCDEF";
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cyg_uint8 csum = 0;
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int i;
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cyg_hal_plf_scif_putc(&channel, '$');
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cyg_hal_plf_scif_putc(&channel, 'O');
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csum += 'O';
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for( i = 0; i < pos; i++ )
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{
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char ch = line[i];
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char h = hex[(ch>>4)&0xF];
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char l = hex[ch&0xF];
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cyg_hal_plf_scif_putc(&channel, h);
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cyg_hal_plf_scif_putc(&channel, l);
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csum += h;
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csum += l;
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}
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cyg_hal_plf_scif_putc(&channel, '#');
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cyg_hal_plf_scif_putc(&channel, hex[(csum>>4)&0xF]);
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cyg_hal_plf_scif_putc(&channel, hex[csum&0xF]);
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// Wait for the ACK character '+' from GDB here and handle
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// receiving a ^C instead.
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c1 = (char) cyg_hal_plf_scif_getc(&channel);
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if( c1 == '+' )
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break; // a good acknowledge
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// Check for user break.
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if( cyg_hal_is_break( &c1, 1 ) )
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cyg_hal_user_break( NULL );
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// otherwise, loop round again
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}
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pos = 0;
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// And re-enable interrupts
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#ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
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CYG_HAL_GDB_LEAVE_CRITICAL_IO_REGION(old);
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#else
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HAL_RESTORE_INTERRUPTS(old);
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#endif
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}
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#else // CYG_HAL_DIAG_GDB
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cyg_hal_plf_scif_putc(&channel, c);
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#endif
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}
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#endif // CYGSEM_HAL_VIRTUAL_VECTOR_DIAG
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//-----------------------------------------------------------------------------
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// End of hal_diag.c
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