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  <div class="section" id="skiboot-5-2-0">
<span id="id1"></span><h1>skiboot-5.2.0<a class="headerlink" href="#skiboot-5-2-0" title="Permalink to this headline"></a></h1>
<p>skiboot-5.2.0 was released on Wednesday March 16th, 2016.</p>
<p>skiboot-5.2.0 is the first stable release of skiboot 5.2, the new stable
release of skiboot, which will take over from the 5.1.x series which was
first released August 17th, 2015.</p>
<p>skiboot-5.2.0 contains all bug fixes as of skiboot-5.1.15.</p>
<p>This is the second release that will follow the (now documented) Skiboot
stable rules - see <a class="reference internal" href="../process/stable-skiboot-rules.html#stable-rules"><span class="std std-ref">Skiboot stable tree rules and releases</span></a>.</p>
<div class="section" id="changes-since-rc2">
<h2>Changes since rc2<a class="headerlink" href="#changes-since-rc2" title="Permalink to this headline"></a></h2>
<p>Over skiboot-5.2.0-rc2, the following fixes are included:</p>
<ul class="simple">
<li>Include ‘extract-gcov’ in make clean.</li>
<li>ipmi-sel: Fix esel event logger to handle early boot PANIC events</li>
<li>IPMI: Enable synchronous eSEL logging option (for PANIC events)</li>
<li>libflash/libffs: Reporting seeing all 0xFF bytes during init.</li>
<li>ipmi-sel: Fix memory leak in error path</li>
</ul>
</div>
<div class="section" id="changes-since-rc1">
<h2>Changes since rc1<a class="headerlink" href="#changes-since-rc1" title="Permalink to this headline"></a></h2>
<p>Over skiboot-5.2.0-rc1, we have the following changes:</p>
<ul class="simple">
<li>Add Barreleye platform</li>
</ul>
<div class="section" id="generic">
<h3>Generic<a class="headerlink" href="#generic" title="Permalink to this headline"></a></h3>
<ul class="simple">
<li>hw/p8-i2c: Speed up SMBUS_WRITE</li>
<li>Fix early backtraces</li>
</ul>
</div>
<div class="section" id="fsp-platforms">
<h3>FSP Platforms<a class="headerlink" href="#fsp-platforms" title="Permalink to this headline"></a></h3>
<ul class="simple">
<li>fsp-sensor: rework device tree for sensors</li>
<li>platforms/firenze: Fix I2C clock source frequency</li>
</ul>
</div>
<div class="section" id="simics-simulator">
<h3>Simics simulator<a class="headerlink" href="#simics-simulator" title="Permalink to this headline"></a></h3>
<ul class="simple">
<li>Enable Simics UART console</li>
</ul>
</div>
<div class="section" id="mambo-simulator">
<h3>Mambo simulator<a class="headerlink" href="#mambo-simulator" title="Permalink to this headline"></a></h3>
<ul class="simple">
<li>platforms/mambo: Add terminate callback<ul>
<li>fix hang in multi-threaded mambo</li>
<li>add multithreaded mambo tests</li>
</ul>
</li>
</ul>
</div>
<div class="section" id="ipmi">
<h3>IPMI<a class="headerlink" href="#ipmi" title="Permalink to this headline"></a></h3>
<ul class="simple">
<li>hw/ipmi: fix event data 1 for System Firmware Progress sensor</li>
<li>ipmi: Log exact NetFn value in OPAL logs</li>
</ul>
</div>
<div class="section" id="ast-bmc-based-platforms">
<h3>AST BMC based platforms<a class="headerlink" href="#ast-bmc-based-platforms" title="Permalink to this headline"></a></h3>
<ul class="simple">
<li>hw/bt: allow BT driver to use different buffer size</li>
</ul>
</div>
<div class="section" id="opal-prd-utility">
<h3>opal-prd utility<a class="headerlink" href="#opal-prd-utility" title="Permalink to this headline"></a></h3>
<ul class="simple">
<li><dl class="first docutils">
<dt>opal-prd: Add debug output for firmware-driven OCC events</dt>
<dd>We indicate when we have a user-driven event, so add corresponding
outputs for firmware-driven ones too.</dd>
</dl>
</li>
</ul>
</div>
<div class="section" id="getscom-utility">
<h3>getscom utility<a class="headerlink" href="#getscom-utility" title="Permalink to this headline"></a></h3>
<ul class="simple">
<li>Add Naples chip support</li>
</ul>
</div>
<div class="section" id="new-features">
<h3>New Features<a class="headerlink" href="#new-features" title="Permalink to this headline"></a></h3>
<p>Over skiboot-5.1, the following features have been added:</p>
<ul class="simple">
<li>Naples (P8’, i.e. P8 with NVLINK) processor support, including NVLINK.</li>
<li>Improvements in gard, libflash/pflash and opal-prd utilities<ul>
<li>increased testing</li>
<li>increased usability</li>
<li>systemd scripts for opal-prd</li>
<li>pflash can now use the /dev/mtd device to access BMC flash rather than
accessing it directly. It is <em>important</em> that you use –mtd if your
BMC may otherwise know how to interact with its own flash.</li>
</ul>
</li>
<li>support for Micron N25Q256Ax and N25Qx256Ax NOR flash.</li>
<li>support for Winbond W25Q256BV NOR flash</li>
<li>support for an emulated (“fake”) RTC clock, useful in simulators
and during bringup</li>
<li>Explicit 1:1 mapping in ranges properties have been added to PCI
bridges. This allows a neat trick with offb and VGA ports that should
probably not be told to young children.</li>
<li>Added support to read the V2 format of the OCC-OPAL memory region,
which supports Workload Optimized Frequency (WOF)</li>
</ul>
</div>
<div class="section" id="changes-in-behavior">
<h3>Changes in behavior<a class="headerlink" href="#changes-in-behavior" title="Permalink to this headline"></a></h3>
<ul class="simple">
<li>Assigning OPAL IDs to PHBs is now fixed and based on the chip id and PHB
index on that chip. On POWER7, we continue to use allocated numbers.</li>
<li>We now query the BMC for BT capabilities rather than making assumptions</li>
</ul>
</div>
<div class="section" id="removed-support">
<h3>Removed support<a class="headerlink" href="#removed-support" title="Permalink to this headline"></a></h3>
<ul class="simple">
<li>p5ioc2 is no longer supported.
This affects a grand total of two POWER7 systems in the world.</li>
</ul>
<p><strong>NOTE</strong>: It is planned that skiboot-5.2 will be the last release supporting
POWER7 machines.</p>
</div>
<div class="section" id="bugs-fixed">
<h3>Bugs fixed<a class="headerlink" href="#bugs-fixed" title="Permalink to this headline"></a></h3>
<ul class="simple">
<li>PHB3: Fix unexpected ER (all) on errinjct by PCI config</li>
<li>hw/bt: timeout messages when BT interface isn’t functional</li>
<li>On Habanero, Slot3 should have been “Slot 3”.</li>
<li>We now completely flush the console buffer before power down and reboot</li>
<li>For chips with ibm,occ-functional-state set to false, we don’t wait
for the OCC to start. This caused needless delay in booting on simulators
which did not simulate OCCs.</li>
<li>Change OCC reset order to always reset slave OCCs first.</li>
<li>slw: Remove overwrites for EX_PM_CORE_ECO_VRET and EX_PM_CORE_PFET_VRET
(these were already initialized in hostboot)</li>
<li>p8-i2c: send stop bit on timeouts.
Some devices can otherwise leave the bus in a held state.</li>
</ul>
</div>
<div class="section" id="other-improvements">
<h3>Other improvements<a class="headerlink" href="#other-improvements" title="Permalink to this headline"></a></h3>
<ul class="simple">
<li>many fixes of compiler and static analysis warnings</li>
<li>increased unit test coverage</li>
<li>Unit test of “boot debian jessie installer”</li>
<li>ability to plug in other simulators to run existing tests (e.g. simulator for
non pegasus p8)</li>
<li>Support using (patched) Qemu with PowerNV platform support for running
unit tests.</li>
<li>increased support for running with sparse</li>
<li>We now build with -fstack-protector-strong if supported by the compiler</li>
<li>We now build with -Werror for -Wformat</li>
<li>pflash is now built as part of travis-ci and for Coverity Scan.</li>
<li>There is now a RPM SPEC file that can be used as the basis for packaging
skiboot and associated utilities.</li>
</ul>
</div>
</div>
<div class="section" id="contributors">
<h2>Contributors<a class="headerlink" href="#contributors" title="Permalink to this headline"></a></h2>
<p>We have had a number of improvements in workflow over skiboot-5.1.0. Looking
back, we have roughly the same number of changesets (372 for 5.1.0, 334 for
5.2.0-rc1 - even closer for 5.1.0-beta1) which indicates a relatively stable
rate of development.</p>
<p>Complete statistics are included below (generated by gitdm), but I’d like to
draw attention to a couple of stats:</p>
<table border="1" class="docutils">
<colgroup>
<col width="19%" />
<col width="14%" />
<col width="17%" />
<col width="17%" />
<col width="14%" />
<col width="19%" />
</colgroup>
<thead valign="bottom">
<tr class="row-odd"><th class="head">Release</th>
<th class="head">csets</th>
<th class="head">Ack</th>
<th class="head">Reviews</th>
<th class="head">Tested</th>
<th class="head">Reported</th>
</tr>
</thead>
<tbody valign="top">
<tr class="row-even"><td>5.0</td>
<td>329</td>
<td>15</td>
<td>20</td>
<td>1</td>
<td>0</td>
</tr>
<tr class="row-odd"><td>5.1</td>
<td>372</td>
<td>13</td>
<td>38</td>
<td>1</td>
<td>4</td>
</tr>
<tr class="row-even"><td>5.2-rc1</td>
<td>334</td>
<td>20</td>
<td>34</td>
<td>6</td>
<td>11</td>
</tr>
</tbody>
</table>
<p>Overall, it looks like we’re on the right trajectory for increasing the number
of eyeballs looking at code before it heads in tree, especially around testing.
Largely, this increase in Tested-by can be attributed to encouraging the
existing test teams to start commenting on the patches themselves.</p>
<p>Anyway, here’s the full stats from skiboot 5.1.0 to 5.2.0-rc1:</p>
<p>Processed 334 csets from 27 developers
2 employers found
A total of 46172 lines added, 23274 removed (delta 22898)</p>
<p>Developers with the most changesets</p>
<table border="1" class="docutils">
<colgroup>
<col width="70%" />
<col width="30%" />
</colgroup>
<thead valign="bottom">
<tr class="row-odd"><th class="head">&#160;</th>
<th class="head">&#160;</th>
</tr>
</thead>
<tbody valign="top">
<tr class="row-even"><td>Stewart Smith</td>
<td>146 (43.7%)</td>
</tr>
<tr class="row-odd"><td>Cyril Bur</td>
<td>52 (15.6%)</td>
</tr>
<tr class="row-even"><td>Benjamin Herrenschmidt</td>
<td>15 (4.5%)</td>
</tr>
<tr class="row-odd"><td>Joel Stanley</td>
<td>12 (3.6%)</td>
</tr>
<tr class="row-even"><td>Gavin Shan</td>
<td>12 (3.6%)</td>
</tr>
<tr class="row-odd"><td>Alistair Popple</td>
<td>10 (3.0%)</td>
</tr>
<tr class="row-even"><td>Vasant Hegde</td>
<td>10 (3.0%)</td>
</tr>
<tr class="row-odd"><td>Michael Neuling</td>
<td>10 (3.0%)</td>
</tr>
<tr class="row-even"><td>Russell Currey</td>
<td>9 (2.7%)</td>
</tr>
<tr class="row-odd"><td>Cédric Le Goater</td>
<td>8 (2.4%)</td>
</tr>
<tr class="row-even"><td>Jeremy Kerr</td>
<td>8 (2.4%)</td>
</tr>
<tr class="row-odd"><td>Samuel Mendoza-Jonas</td>
<td>6 (1.8%)</td>
</tr>
<tr class="row-even"><td>Neelesh Gupta</td>
<td>6 (1.8%)</td>
</tr>
<tr class="row-odd"><td>Shilpasri G Bhat</td>
<td>4 (1.2%)</td>
</tr>
<tr class="row-even"><td>Oliver O’Halloran</td>
<td>4 (1.2%)</td>
</tr>
<tr class="row-odd"><td>Mahesh Salgaonkar</td>
<td>4 (1.2%)</td>
</tr>
<tr class="row-even"><td>Vipin K Parashar</td>
<td>3 (0.9%)</td>
</tr>
<tr class="row-odd"><td>Daniel Axtens</td>
<td>3 (0.9%)</td>
</tr>
<tr class="row-even"><td>Andrew Donnellan</td>
<td>2 (0.6%)</td>
</tr>
<tr class="row-odd"><td>Philippe Bergheaud</td>
<td>2 (0.6%)</td>
</tr>
<tr class="row-even"><td>Ananth N Mavinakayanahalli</td>
<td>2 (0.6%)</td>
</tr>
<tr class="row-odd"><td>Vaibhav Jain</td>
<td>1 (0.3%)</td>
</tr>
<tr class="row-even"><td>Sam Mendoza-Jonas</td>
<td>1 (0.3%)</td>
</tr>
<tr class="row-odd"><td>Adriana Kobylak</td>
<td>1 (0.3%)</td>
</tr>
<tr class="row-even"><td>Shreyas B. Prabhu</td>
<td>1 (0.3%)</td>
</tr>
<tr class="row-odd"><td>Vaidyanathan Srinivasan</td>
<td>1 (0.3%)</td>
</tr>
<tr class="row-even"><td>Ian Munsie</td>
<td>1 (0.3%)</td>
</tr>
</tbody>
</table>
<p>Developers with the most changed lines</p>
<table border="1" class="docutils">
<colgroup>
<col width="67%" />
<col width="33%" />
</colgroup>
<thead valign="bottom">
<tr class="row-odd"><th class="head">&#160;</th>
<th class="head">&#160;</th>
</tr>
</thead>
<tbody valign="top">
<tr class="row-even"><td>Stewart Smith</td>
<td>19533 (39.4%)</td>
</tr>
<tr class="row-odd"><td>Oliver O’Halloran</td>
<td>17920 (36.1%)</td>
</tr>
<tr class="row-even"><td>Alistair Popple</td>
<td>3285 (6.6%)</td>
</tr>
<tr class="row-odd"><td>Daniel Axtens</td>
<td>2154 (4.3%)</td>
</tr>
<tr class="row-even"><td>Cyril Bur</td>
<td>2028 (4.1%)</td>
</tr>
<tr class="row-odd"><td>Benjamin Herrenschmidt</td>
<td>941 (1.9%)</td>
</tr>
<tr class="row-even"><td>Neelesh Gupta</td>
<td>434 (0.9%)</td>
</tr>
<tr class="row-odd"><td>Gavin Shan</td>
<td>294 (0.6%)</td>
</tr>
<tr class="row-even"><td>Russell Currey</td>
<td>261 (0.5%)</td>
</tr>
<tr class="row-odd"><td>Vasant Hegde</td>
<td>245 (0.5%)</td>
</tr>
<tr class="row-even"><td>Cédric Le Goater</td>
<td>209 (0.4%)</td>
</tr>
<tr class="row-odd"><td>Vipin K Parashar</td>
<td>155 (0.3%)</td>
</tr>
<tr class="row-even"><td>Shilpasri G Bhat</td>
<td>153 (0.3%)</td>
</tr>
<tr class="row-odd"><td>Joel Stanley</td>
<td>140 (0.3%)</td>
</tr>
<tr class="row-even"><td>Vaidyanathan Srinivasan</td>
<td>135 (0.3%)</td>
</tr>
<tr class="row-odd"><td>Michael Neuling</td>
<td>111 (0.2%)</td>
</tr>
<tr class="row-even"><td>Samuel Mendoza-Jonas</td>
<td>81 (0.2%)</td>
</tr>
<tr class="row-odd"><td>Jeremy Kerr</td>
<td>60 (0.1%)</td>
</tr>
<tr class="row-even"><td>Mahesh Salgaonkar</td>
<td>58 (0.1%)</td>
</tr>
<tr class="row-odd"><td>Vaibhav Jain</td>
<td>50 (0.1%)</td>
</tr>
<tr class="row-even"><td>Ananth N Mavinakayanahalli</td>
<td>43 (0.1%)</td>
</tr>
<tr class="row-odd"><td>Shreyas B. Prabhu</td>
<td>17 (0.0%)</td>
</tr>
<tr class="row-even"><td>Sam Mendoza-Jonas</td>
<td>12 (0.0%)</td>
</tr>
<tr class="row-odd"><td>Andrew Donnellan</td>
<td>10 (0.0%)</td>
</tr>
<tr class="row-even"><td>Ian Munsie</td>
<td>8 (0.0%)</td>
</tr>
<tr class="row-odd"><td>Philippe Bergheaud</td>
<td>6 (0.0%)</td>
</tr>
<tr class="row-even"><td>Adriana Kobylak</td>
<td>6 (0.0%)</td>
</tr>
</tbody>
</table>
<p>Developers with the most lines removed</p>
<table border="1" class="docutils">
<colgroup>
<col width="66%" />
<col width="34%" />
</colgroup>
<thead valign="bottom">
<tr class="row-odd"><th class="head">&#160;</th>
<th class="head">&#160;</th>
</tr>
</thead>
<tbody valign="top">
<tr class="row-even"><td>Daniel Axtens</td>
<td>2149 (9.2%)</td>
</tr>
<tr class="row-odd"><td>Shreyas B. Prabhu</td>
<td>17 (0.1%)</td>
</tr>
<tr class="row-even"><td>Andrew Donnellan</td>
<td>9 (0.0%)</td>
</tr>
<tr class="row-odd"><td>Vipin K Parashar</td>
<td>2 (0.0%)</td>
</tr>
</tbody>
</table>
<p>Developers with the most signoffs (total 190)</p>
<table border="1" class="docutils">
<colgroup>
<col width="66%" />
<col width="34%" />
</colgroup>
<thead valign="bottom">
<tr class="row-odd"><th class="head">&#160;</th>
<th class="head">&#160;</th>
</tr>
</thead>
<tbody valign="top">
<tr class="row-even"><td>Stewart Smith</td>
<td>188 (98.9%)</td>
</tr>
<tr class="row-odd"><td>Gavin Shan</td>
<td>1 (0.5%)</td>
</tr>
<tr class="row-even"><td>Neelesh Gupta</td>
<td>1 (0.5%)</td>
</tr>
</tbody>
</table>
<p>Developers with the most reviews (total 34)</p>
<table border="1" class="docutils">
<colgroup>
<col width="66%" />
<col width="34%" />
</colgroup>
<thead valign="bottom">
<tr class="row-odd"><th class="head">&#160;</th>
<th class="head">&#160;</th>
</tr>
</thead>
<tbody valign="top">
<tr class="row-even"><td>Patrick Williams</td>
<td>5 (14.7%)</td>
</tr>
<tr class="row-odd"><td>Joel Stanley</td>
<td>5 (14.7%)</td>
</tr>
<tr class="row-even"><td>Cédric Le Goater</td>
<td>5 (14.7%)</td>
</tr>
<tr class="row-odd"><td>Vasant Hegde</td>
<td>4 (11.8%)</td>
</tr>
<tr class="row-even"><td>Alistair Popple</td>
<td>4 (11.8%)</td>
</tr>
<tr class="row-odd"><td>Sam Mendoza-Jonas</td>
<td>3 (8.8%)</td>
</tr>
<tr class="row-even"><td>Samuel Mendoza-Jonas</td>
<td>3 (8.8%)</td>
</tr>
<tr class="row-odd"><td>Andrew Donnellan</td>
<td>2 (5.9%)</td>
</tr>
<tr class="row-even"><td>Cyril Bur</td>
<td>2 (5.9%)</td>
</tr>
<tr class="row-odd"><td>Vaibhav Jain</td>
<td>1 (2.9%)</td>
</tr>
</tbody>
</table>
<p>Developers with the most test credits (total 6)</p>
<table border="1" class="docutils">
<colgroup>
<col width="66%" />
<col width="34%" />
</colgroup>
<thead valign="bottom">
<tr class="row-odd"><th class="head">&#160;</th>
<th class="head">&#160;</th>
</tr>
</thead>
<tbody valign="top">
<tr class="row-even"><td>Vipin K Parashar</td>
<td>3 (50.0%)</td>
</tr>
<tr class="row-odd"><td>Vaibhav Jain</td>
<td>2 (33.3%)</td>
</tr>
<tr class="row-even"><td>Gajendra B Bandhu1</td>
<td>1 (16.7%)</td>
</tr>
</tbody>
</table>
<p>Developers who gave the most tested-by credits (total 6)</p>
<table border="1" class="docutils">
<colgroup>
<col width="68%" />
<col width="33%" />
</colgroup>
<thead valign="bottom">
<tr class="row-odd"><th class="head">&#160;</th>
<th class="head">&#160;</th>
</tr>
</thead>
<tbody valign="top">
<tr class="row-even"><td>Gavin Shan</td>
<td>2 (33.3%)</td>
</tr>
<tr class="row-odd"><td>Ananth N Mavinakayanahalli</td>
<td>2 (33.3%)</td>
</tr>
<tr class="row-even"><td>Alistair Popple</td>
<td>1 (16.7%)</td>
</tr>
<tr class="row-odd"><td>Stewart Smith</td>
<td>1 (16.7%)</td>
</tr>
</tbody>
</table>
<p>Developers with the most report credits (total 11)</p>
<table border="1" class="docutils">
<colgroup>
<col width="66%" />
<col width="34%" />
</colgroup>
<thead valign="bottom">
<tr class="row-odd"><th class="head">&#160;</th>
<th class="head">&#160;</th>
</tr>
</thead>
<tbody valign="top">
<tr class="row-even"><td>Vaibhav Jain</td>
<td>2 (18.2%)</td>
</tr>
<tr class="row-odd"><td>Paul Nguyen</td>
<td>2 (18.2%)</td>
</tr>
<tr class="row-even"><td>Alistair Popple</td>
<td>1 (9.1%)</td>
</tr>
<tr class="row-odd"><td>Cédric Le Goater</td>
<td>1 (9.1%)</td>
</tr>
<tr class="row-even"><td>Aneesh Kumar K.V</td>
<td>1 (9.1%)</td>
</tr>
<tr class="row-odd"><td>Dionysius d. Bell</td>
<td>1 (9.1%)</td>
</tr>
<tr class="row-even"><td>Pradeep Ramanna</td>
<td>1 (9.1%)</td>
</tr>
<tr class="row-odd"><td>John Walthour</td>
<td>1 (9.1%)</td>
</tr>
<tr class="row-even"><td>Benjamin Herrenschmidt</td>
<td>1 (9.1%)</td>
</tr>
</tbody>
</table>
<p>Developers who gave the most report credits (total 11)</p>
<table border="1" class="docutils">
<colgroup>
<col width="66%" />
<col width="34%" />
</colgroup>
<thead valign="bottom">
<tr class="row-odd"><th class="head">&#160;</th>
<th class="head">&#160;</th>
</tr>
</thead>
<tbody valign="top">
<tr class="row-even"><td>Gavin Shan</td>
<td>6 (54.5%)</td>
</tr>
<tr class="row-odd"><td>Stewart Smith</td>
<td>3 (27.3%)</td>
</tr>
<tr class="row-even"><td>Samuel Mendoza-Jonas</td>
<td>1 (9.1%)</td>
</tr>
<tr class="row-odd"><td>Shilpasri G Bhat</td>
<td>1 (9.1%)</td>
</tr>
</tbody>
</table>
</div>
</div>


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