sidsc-design specialization (reusing components)

["Park Seth-R01164" <seth.park@freescale.com>]

New structure: sidsc-design

This is a proposed structure for the initial public release of the SIDSC plugin.

 

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Problem statement

The SIDSC data model does not provide good support for reusing components. There are several usecases that the proposed sidsc-design map addresses:

 

1. Supply a base address for each component on a design. Currently, it is hard-coded and can be filtered via select-atts.

 

2. Provide a collection of components.

 

3. Define RTL parameters.

 

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Inspiration: IP-XACT

IP-XACT has a <design> element that satisfies the usecases above. Here is how the specification describes the design element:

 

"An IP-XACT design is the central placeholder for the assembly of component objects meta-data. A design describes a list of components referenced by this description, their configuration, and their interconnections to each other. The interconnections may be between interfaces or between ports on a component. A design description is analogous to a schematic of components."

 

This is exactly what we need.

 

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Desired response

Please have a look at this proposal and be ready for discussion at the next sidsc call. I know I'm throwing a bunch of last minute items at you, but these are real issues that I've encountered using the schema in a production environment. I think it will benefit all members/users... and, the work is already done and documented.

 

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Sample RTL (from wikipedia.com)

 

module Div20x (rst, clk, cet, cep, count,tc);
// TITLE 'Divide-by-20 Counter with enables'
// enable CEP is a clock enable only
// enable CET is a clock enable and
// enables the TC output
// a counter using the Verilog language

 

parameter size = 5;
parameter length = 20;

 

input rst; // These inputs/outputs represent

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Sample IP-XACT design element

 

<design>
  <vendor>spiritconsortium.org</vendor>
  <library>Leon2RTL</library>
  <name>design_Leon2Platform</name>
  <version>3.0</version>
  <componentInstances>
    <componentInstance>
      <instanceName>uahbbus</instanceName>
      <componentRef vendor="spiritconsortium.org" library="Leon2RTL" name="ahbbus22" version="1.3"/>
      <configurableElementValues>
        <configurableElementValue referenceId="defmast">0</configurableElementValue>
        <configurableElementValue referenceId="range_slv0_mirror">0x00040000</configurableElementValue>
        <configurableElementValue referenceId="range_slv1_mirror">0x00009000</configurableElementValue>
      </configurableElementValues>
    </componentInstance>
  </componentInstances>

 

 

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Sample SIDSC design

 

<sidsc-design>
    <component-ref base-address="0" href="TPM.xml">
        <parameter>
            <key>size</key>
            <value>5</value>
        </parameter>
        <parameter>
            <key>length</key>
            <value>20</value>
        </parameter>
    </component-ref>
    <component-ref base-address="1" href="SCI.xml">
    </component-ref>
</sidsc-design>