title: U-Boot prompt timeout
body: <p>I'm accessing <strong>U-boot's</strong> console via serial connection and when <strong>u-boot</strong> prompt me to enter <code>commands</code>, it seems that I have limited time to do that. I want to enter several <code>commands</code>, but I need more time. </p>
  
  <p>Does anyone experienced such an issue and how can I increase that time (if that is the problem)?</p>