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| <span id="versioning"></span><h1>Version Scheme<a class="headerlink" href="#version-scheme" title="Permalink to this headline">¶</a></h1> |
| <p>Each firmware component has its own versioning scheme, and <cite>op-build</cite> brings |
| all of these components together in one image with one global version |
| number.</p> |
| <p>Firmware versions are exposed to the user through both the device tree |
| (<span class="xref std std-ref">device-tree/ibm,firmware-versions</span>) and the VERSION firmware |
| partition. As such, firmware versioning numbers <strong>MUST</strong> follow the |
| requirements in order for some functionality to be correct.</p> |
| <dl class="docutils"> |
| <dt>skiboot</dt> |
| <dd><a class="reference external" href="https://open-power.github.io/skiboot/doc/process/versioning.html#versioning" title="(in skiboot vv6.7-45-g4b9ca02)"><span>Versioning Scheme of skiboot</span></a></dd> |
| <dt>Hostboot</dt> |
| <dd>Currently just uses the git SHA1 of the commit</dd> |
| <dt>OCC</dt> |
| <dd>Currently just uses the git SHA1 of the commit</dd> |
| <dt>Petitboot</dt> |
| <dd>Uses a X.Y.Z versioning scheme.</dd> |
| <dt>Linux</dt> |
| <dd>We use the upstream Linux kernel version, and always append <code class="docutils literal notranslate"><span class="pre">-openpowerN</span></code> |
| where N is a number starting at 1 that increases for each change we make |
| to any additional patches carried in <cite>op-build</cite> for that specific kernel |
| version. |
| We follow the stable tree and have an “upstream <em>first</em>” policy in place.</dd> |
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