arch/arm-efika/kernel/kernel_debug.c

   1 /*
   2     Copyright � 1995-2010, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: kernel_debug.c
   6     Lang: english
   7 */
   8
   9 #include <exec/types.h>
  10 #include <aros/kernel.h>
  11 #include <inttypes.h>
  12
  13 #include <kernel_base.h>
  14 #include <kernel_debug.h>
  15
  16 #include <hardware/mx51_uart.h>
  17
  18 static volatile MX51_UART * const uart = (MX51_UART *)UART1_BASE_ADDR;
  19
  20 static inline void waitBusy()
  21 {
  22     while((uart->USR2 & UART_USR2_TXDC) == 0);
  23 }
  24
  25 static inline void putByte(uint8_t chr)
  26 {
  27     if (chr == '\n')
  28         uart->UTXD = '\r';
  29     uart->UTXD = chr;
  30 }
  31
  32 void (*_KrnPutC)(char) = NULL;
  33
  34 void krnSerPutC(int chr)
  35 {
  36         putByte(chr);
  37         waitBusy();
  38 }
  39
  40 int krnPutC(int chr, struct KernelBase *KernelBase)
  41 {
  42     if (chr == 0x03)
  43         _KrnPutC = NULL;
  44     else
  45     {
  46         if (_KrnPutC)
  47             _KrnPutC(chr);
  48
  49         krnSerPutC(chr);
  50     }
  51
  52     return 0;
  53 }