arch/arm/mach-moxacpu/debug_cpe.c

   1 /*
   2  *  linux/include/asm-arm/arch-integrator/debug-cpe.c
   3  *
   4  *  Copyright (C) 1999 ARM Limited
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include <asm/arch/cpe/cpe.h>
  22
  23 #define SERIAL_THR                      0x00
  24 #define SERIAL_LSR                      0x14
  25 #define SERIAL_LSR_THRE                 0x20
  26
  27 void debug_puts(const char *s)
  28 {
  29         while (*s)
  30         {
  31             volatile unsigned int status=0;
  32             do
  33             {
  34                 status = *(unsigned char *)(IO_ADDRESS(CPE_UART1_BASE)+SERIAL_LSR);
  35             }
  36                 while (!((status & SERIAL_LSR_THRE)==SERIAL_LSR_THRE) );
  37
  38                 *(unsigned char *)(IO_ADDRESS(CPE_UART1_BASE)+SERIAL_THR) = *s;
  39
  40                 if (*s == '\n')
  41                 {
  42
  43             do
  44             {
  45                 status = *(unsigned char *)(IO_ADDRESS(CPE_UART1_BASE)+SERIAL_LSR);
  46             }
  47                 while (!((status & SERIAL_LSR_THRE)==SERIAL_LSR_THRE) );
  48
  49                         *(unsigned char *)(IO_ADDRESS(CPE_UART1_BASE)+SERIAL_THR) = '\r';
  50                 }
  51                 s++;
  52         }
  53 //      while (AMBA_UART_FR & (1 << 3));
  54 }
  55