arch/arm/mach-moxart/debug.c

   1
   2 #include <asm/arch/cpe/cpe.h>
   3
   4 #define SERIAL_THR                      0x00
   5 #define SERIAL_LSR                      0x14
   6 #define SERIAL_LSR_THRE                 0x20
   7
   8 void debug_puts(const char *s)
   9 {
  10         while (*s)
  11         {
  12             volatile unsigned int status=0;
  13             do
  14             {
  15                 status = *(unsigned char *)(IO_ADDRESS(CPE_UART1_BASE)+SERIAL_LSR);
  16             }
  17                 while (!((status & SERIAL_LSR_THRE)==SERIAL_LSR_THRE) );
  18
  19                 *(unsigned char *)(IO_ADDRESS(CPE_UART1_BASE)+SERIAL_THR) = *s;
  20
  21                 if (*s == '\n')
  22                 {
  23
  24             do
  25             {
  26                 status = *(unsigned char *)(IO_ADDRESS(CPE_UART1_BASE)+SERIAL_LSR);
  27             }
  28                 while (!((status & SERIAL_LSR_THRE)==SERIAL_LSR_THRE) );
  29
  30                         *(unsigned char *)(IO_ADDRESS(CPE_UART1_BASE)+SERIAL_THR) = '\r';
  31                 }
  32                 s++;
  33         }
  34 }