New description format

virtual-soc.xml

<?xml version="1.0"?>
<soc>
  <name>vsoc</name>
  <title>Virtual SOC</title>
  <desc>Virtual SoC is a nice and powerful chip.</desc>
  <author>Amaury Pouly</author>
  <isa>ARM</isa>
  <version>0.5</version>
  <node>
    <title>Interrupt Collector</title>
    <desc>An interrupt collector controls the routing of interrupt to the processor</desc>
    <instance>
      <name>COP_INT</name>
      <title>Co-processor interrupt collector</title>
      <address>0x80000000</address>
    </instance>
    <instance>
      <name>CPU_INT</name>
      <title>CPU interrupt collectors 1 and 2</title>
      <range>
        <first>1</first>
        <count>2</count>
        <formula variable="n">0x80001000+(n-1)*0x1000</formula>
      </range>
    </instance>
    <node>
      <title>Interrupt's enable register</title>
      <instance>
        <name>ENABLEn</name>
        <range>
          <first>0</first>
          <count>10</count>
          <base>0x50</base>
          <stride>0x10</formula>
        </range>
      </instance>
      <register>
        <width>32</width>
        <field>
          <name>DMA</name>
          <desc>DMA interrupt enable</desc>
          <position>0</position>
          <width>2</width>
          <enum>
            <name>DISABLED</name>
            <desc>Interrupt is disabled</desc>
            <value>0</value>
          </enum>
          <enum>
            <name>ENABLED</name>
            <desc>Interrupt is enabled</desc>
            <value>1</value>
          </enum>
          <enum>
            <name>NMI</name>
            <desc>Interrupt is non-maskable</desc>
            <value>2</value>
          </enum>
        </field>
      </register>
      <!-- node which follows are variants of the register -->
      <node>
        <instance>
          <name>SET</name>
          <title>Set variant</title>
          <address>4</address>
        </instance>
        <instance>
          <name>CLR</name>
          <title>Clear variant</title>
          <address>8</address>
        </instance>
      </node>
    </node>
  </node>
</soc>