cpu/blackfin/os_log.c

   1 /*
   2  * functions for handling OS log buffer
   3  *
   4  * Copyright (c) 2009 Analog Devices Inc.
   5  *
   6  * Licensed under the 2-clause BSD.
   7  */
   8
   9 #include <common.h>
  10
  11 #define OS_LOG_MAGIC       0xDEADBEEF
  12 #define OS_LOG_MAGIC_ADDR  ((unsigned long *)0x4f0)
  13 #define OS_LOG_PTR_ADDR    ((char **)0x4f4)
  14
  15 bool bfin_os_log_check(void)
  16 {
  17         if (*OS_LOG_MAGIC_ADDR != OS_LOG_MAGIC)
  18                 return false;
  19         *OS_LOG_MAGIC_ADDR = 0;
  20         return true;
  21 }
  22
  23 void bfin_os_log_dump(void)
  24 {
  25         char *log = *OS_LOG_PTR_ADDR;
  26         while (*log) {
  27                 puts(log);
  28                 log += strlen(log) + 1;
  29         }
  30 }