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<div class="section" id="skiboot-5-0">
<span id="id1"></span><h1>skiboot 5.0<a class="headerlink" href="#skiboot-5-0" title="Permalink to this headline">¶</a></h1>
<p>Skiboot 5.0 was released Friday 10th April 2015.</p>
<p>Changes in 5.0 (since rc3):</p>
<blockquote>
<div><ul class="simple">
<li>Fix chip id for nx coprocessors.</li>
<li>hw/ipmi: Fix FW Boot Progress sensor</li>
<li>bt: Add a temporary workaround for bmc dropping messages</li>
<li>FSP/CUPD: Fix lock issue</li>
</ul>
</div></blockquote>
<p>Changes in rc3 (since rc2):</p>
<blockquote>
<div><ul class="simple">
<li>add support for cec_power_down on mambo</li>
<li>external/opal-prd: Use link register for cross-endian branch</li>
<li>opal header file rework, Linux and skiboot now very closely match (API
in opal-api.h)</li>
<li>libflash: don’t use the low level interface if it doesn’t exist</li>
<li>libflash/file: add file abstraction for libflash</li>
<li>external: create a GUARD partition parsing utility</li>
</ul>
</div></blockquote>
<p>Changes in rc2 (since rc1):</p>
<blockquote>
<div><ul class="simple">
<li>opal: Fix an issue where partial LID load causes opal to hang.</li>
<li>nx: use proc_gen instead of param</li>
<li>use chip id for NX engine Coproc Instance num</li>
<li>Fix (hopefully) missing dot symbols in skiboot.map</li>
<li>exceptions: Catch exceptions at boot time</li>
<li>exceptions: Remove deprecated exception patching stuff</li>
<li>mambo: Make mambo_utils.tcl optional</li>
<li>mambo: Exit mambo when the simulation is stopped</li>
<li>add NX register defines</li>
<li>set NX crb input queues to 842 only</li>
<li>core: Catch attempts to branch through a NULL pointer</li>
<li>plat/firestone: Add missing platform hooks</li>
<li>plat/firestone: Add missing platform hooks</li>
<li>elog: Don’t call uninitialized platform elog_commit</li>
<li>external/opal-prd: Use “official” switch-endian syscall</li>
<li>hw/ipmi: Rework sensors and fix boot count sensor</li>
</ul>
</div></blockquote>
<p>Changes in rc1 (since 4.1.1):</p>
<p>General:</p>
<blockquote>
<div><ul>
<li><p class="first">big OPAL API documentation updates
We now document around 19 OPAL calls. There’s still ~100 left to doc
though :)</p>
</li>
<li><p class="first">skiboot can load FreeBSD kernel payload (thanks to Nathan Whitehorn)</p>
</li>
<li><p class="first">You can now run sparse by setting C=1 when building</p>
</li>
<li><p class="first">PSI: Revert the timeout for PSI link recovery to architected value
now 30mins (prev 15)</p>
</li>
<li><p class="first">cpuidle: Add validated metrics for idle states</p>
</li>
<li><p class="first">core/flash: Add flash API
OPAL_FLASH_(READ|WRITE|ERASE)</p>
</li>
<li><p class="first">capi: Dynamically calculate which CAPP port to use
no longer hardwired to PHB0</p>
</li>
<li><p class="first">vpd: Use slca parent-child relationship to create vpd tree</p>
</li>
<li><p class="first">opal: Do not overwrite same HMI event for multiple HMI errors.
Now Linux will get a HMI event for each HMI error</p>
</li>
<li><p class="first">HMI event v2 now includes information about checkstop</p>
</li>
<li><p class="first">HMI improvements, handle more conditions gracefully:</p>
<ul class="simple">
<li>TB residue error</li>
<li>TFMR firmware control error</li>
<li>TFMR parity</li>
<li>TFMR HDEC parity error</li>
<li>TFMR DEC parity error</li>
<li>TFMR SPURR/PURR parity error</li>
<li>TB residue and HDEC parity HMI errors on split core</li>
</ul>
</li>
<li><p class="first">hostservices: Cache lids prior to first load request</p>
</li>
<li><p class="first">Warn when pollers are called with a lock held
and keep track of lock depth.</p>
<p><strong>NOTE:</strong> This means we will get backtraces in skiboot msglog on FSP machines
This is a KNOWN ISSUE and is largely harmless.
There’s still a couple that we haven’t yet cleaned, these
messages can be thought of as a TODO list for developers.</p>
</li>
<li><p class="first">Don’t run pollers in time_wait if lock held</p>
</li>
<li><p class="first">pci: Don’t hang if we have only one CPU</p>
</li>
<li><p class="first">Detect recursive poller entry</p>
</li>
<li><p class="first">General cleanup</p>
</li>
<li><p class="first">Cleanup of opal.h so that we can have Linux and skiboot match</p>
</li>
<li><p class="first">add sparse annotations to opal.h</p>
</li>
<li><p class="first">Platform hooks for loading and preloading resources (LIDs)
This lays the groundwork for cutting 4-20 seconds off boot in a
future skiboot release.</p>
</li>
<li><p class="first">Fix potential race when clearing OCC interrupt status</p>
</li>
<li><p class="first">Add platform operation for reading sensors</p>
<ul class="simple">
<li>add support to read core and memory buffer temperatures</li>
</ul>
</li>
</ul>
</div></blockquote>
<p>Mambo/POWER8 Functional Simulator:</p>
<blockquote>
<div><ul class="simple">
<li>Replace is_mambo_chip() with a better quirks mechanism.</li>
<li>Don’t hang if we only have one CPU and PCI.</li>
</ul>
</div></blockquote>
<p>BMC systems:</p>
<blockquote>
<div><ul class="simple">
<li>BMC can load payload from flash</li>
<li>IPMI on BMC systems: graceful poweroff and reboot</li>
<li>IPMI on BMC systems: watchdog timer support</li>
<li>IPMI on BMC systems: PNOR locking</li>
<li>Support for IPMI progress sensor</li>
<li>IPMI boot count sensor</li>
<li>capi: Rework microcode flash download and CAPP upload
load microcode on non-fsp systems</li>
<li>NEW opal-prd userspace tool that handles PRD on non-FSP systems.
and OPAL PRD calls to support it.</li>
<li>Improvements to opal-prd, libflash, and ipmi</li>
<li>ECC support in libflash</li>
<li>Load CAPI micro code, enabling CAPI on OpenPower systems.</li>
<li>Dynamically calculate which CAPP port to use, don’t hardcode to PHB0</li>
<li>memboot flash backend</li>
</ul>
</div></blockquote>
<p>POWER8</p>
<blockquote>
<div><ul class="simple">
<li>add nx-842 coproc support</li>
</ul>
</div></blockquote>
<p>FSP systems:</p>
<blockquote>
<div><ul class="simple">
<li>Make abort() update sp attn area (like assert does)
On FSP systems this gives better error logs/dumps when abort() is hit</li>
<li>FSP/LEDS: Many improvements and bug fixes</li>
<li>LED support for FSP machines
Adds OPAL_LEDS_(GET|SET)_INDICATOR and device-tree bindings</li>
<li>Refactor of fsp-rtc</li>
<li>OCC loading fixes, including possible race condition where we would
fail to IPL.</li>
</ul>
</div></blockquote>
<p>POWER7</p>
<blockquote>
<div><ul class="simple">
<li>Fix unsupported return code of OPAL_(UN)REGISTER_DUMP_REGION on P7</li>
<li>occ: Don’t do bad XSCOMs on P7
The OCC interrupt register only exists on P8, accessing it on P7 causes
not only error logs but also causes PRD to eventually gard chips.</li>
<li>cpu: Handle opal_reinit_cpus() more gracefully on P7
no longer generate error logs</li>
<li>libflash updates for openpower</li>
<li>misc code cleanup</li>
<li>add nx-842 coproc support</li>
</ul>
</div></blockquote>
</div>
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