arm64 support not provided in mkimage
<p>I am trying to create an u-boot supported image using <code>mkimage</code>, when I try using:</p>

<pre><code>mkimage -A arm64
</code></pre>

<p>I get the error:</p>

<pre><code>Invalid CPU Type - valid names are: alpha, arm, x86, ia64, m68k, microblaze, 
                   mips, mips64, nios2, powerpc, ppc, s390, sh, sparc, sparc64,
                   blackfin, avr32, nds32, or1k, sandbox
</code></pre>

<p>So I see there is no support for arm64.</p>

<p>I tried compiling a new version of u-boot, but the <code>mkimage</code> in u-boot is also not supporting arm64.</p>

<p>I tried installing u-boot-tools on my ubuntu pc with:</p>

<pre><code>sudo apt-get install u-boot-tools
</code></pre>

<p>But this <code>mkimage</code> also is giving me the same problem.</p>

<p>Any help is highly appreciated.</p>

<p>Thank You!</p>