title: Where is ARM TrustZone api?
body: <p>I read in trustzone_security_whitepaper.pdf, chapter 5.5 The TrustZone API, </p>
  
  <pre><code>&gt;To encourage the development of security solutions ARM have produced a 
  &gt;standardized software API, called the TrustZone API (TZAPI), which defines 
  &gt;a software interface which client applications running in the rich operating
  &gt;environment can use to interact with a security environment.
  </code></pre>
  
  <p>and 5.5.1 API availability</p>
  
  <pre><code>&gt;"The TrustZone API can be downloaded for free from the ARM website" 
  </code></pre>
  
  <p>I searched the arm website but didn't found the entry to TrustZone api list or manuals?</p>