arch/mips/tx4927/common/tx4927_dbgio.c

   1 /*
   2  * linux/arch/mips/tx4927/common/tx4927_dbgio.c
   3  *
   4  * kgdb interface for gdb
   5  *
   6  * Author: MontaVista Software, Inc.
   7  *         source@mvista.com
   8  *
   9  * Copyright 2001-2002 MontaVista Software Inc.
  10  *
  11  *  This program is free software; you can redistribute it and/or modify it
  12  *  under the terms of the GNU General Public License as published by the
  13  *  Free Software Foundation; either version 2 of the License, or (at your
  14  *  option) any later version.
  15  *
  16  *  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
  17  *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  18  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  *  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  21  *  BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
  22  *  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  23  *  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  24  *  TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
  25  *  USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  *
  27  *  You should have received a copy of the GNU General Public License along
  28  *  with this program; if not, write to the Free Software Foundation, Inc.,
  29  *  675 Mass Ave, Cambridge, MA 02139, USA.
  30  */
  31
  32 #include <asm/mipsregs.h>
  33 #include <asm/system.h>
  34 #include <asm/tx4927/tx4927_mips.h>
  35
  36 u8 getDebugChar(void)
  37 {
  38         extern u8 txx9_sio_kdbg_rd(void);
  39         return (txx9_sio_kdbg_rd());
  40 }
  41
  42
  43 int putDebugChar(u8 byte)
  44 {
  45         extern int txx9_sio_kdbg_wr( u8 ch );
  46         return (txx9_sio_kdbg_wr(byte));
  47 }