Documentation/Intel/development.html


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79

<!DOCTYPE html>
<html>
  <head>
    <title>Development</title>
  </head>
  <body>

<h1>Intel&reg; x86 Coreboot/FSP Development Process</h1>
<p>
  The x86 development process for coreboot is broken into the following components:
</p>
<ul>
  <li>Coreboot <a target="_blank" href="SoC/soc.html">SoC</a> development</li>
  <li>Coreboot <a target="_blank" href="Board/board.html">mainboard</a> development</li>
  <li><a target="_blank" href="fsp1_1.html">FSP 1.1</a> integration</li>
</ul>
<p>
  The development process has two main phases:
</p>
<ol>
  <li>Minimal coreboot; This phase is single threaded</li>
  <li>Adding coreboot features</li>
</ol>

<h2>Minimal Coreboot</h2>
<p>
  The combined steps below describe how to bring up a minimal coreboot for a
  system-on-a-chip (SoC) and a development board:
</p>
<table>
  <tr bgcolor="#ffffc0">
    <td>The initial coreboot steps are single threaded!
      The initial minimal FSP development is also single threaded.
      Progress can speed up by adding more developers after the minimal coreboot/FSP
      implementation reaches the payload.
    </td>
  </tr>
</table>
<ol>
  <li>Get the necessary tools:
    <ul>
      <li>Linux: Use your package manager to install m4 bison flex and the libcurses development
        package.
        <ul>
          <li>Ubuntu or other Linux distribution that use apt, run:
<pre><code>sudo apt-get install m4 bison flex libncurses5-dev
</code></pre>
          </li>
        </ul>
      </li>
    </ul>
  </li>
  <li>Build the cross tools for i386:
    <ul>
      <li>Linux:
<pre><code>make crossgcc-i386</code></pre>
        To use multiple processors for the toolchain build (which takes a long time), use:
<pre><code>make crossgcc-i386 CPUS=N</code></pre>
        where N is the number of cores to use for the build.
      </li>
    </ul>
  </li>
  <li>Get something to build:
    <ol type="A">
      <li><a target="_blank" href="fsp1_1.html#RequiredFiles">FSP 1.1</a> required files</li>
      <li><a target="_blank" href="SoC/soc.html#RequiredFiles">SoC</a> required files</li>
      <li><a target="_blank" href="Board/board.html#RequiredFiles">Board</a> required files</li>
    </ol>
  </li>
  <li>Get result to start <a target="_blank" href="SoC/soc.html#Descriptor">booting</a></li>
  <li><a target="_blank" href="SoC/soc.html#EarlyDebug">Early Debug</a></li>
  <li>Implement and debug the <a target="_blank" href="SoC/soc.html#Bootblock">bootblock</a> code</li>
</ol>


<hr>
<p>Modified: 31 January 2016</p>
  </body>
</html>