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<p class="MsoNormal"><a name="_MailEndCompose"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Hello Patrick,<o:p></o:p></span></a></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Great news on getting your board back up!<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">The BIOS is actually a generic UEFI Firmware developed for the MinnowBoard MAX/Turbot. The most recent version is 0.95, and is available for Download at:
</span><a href="https://firmware.intel.com/projects/minnowboard-max"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">https://firmware.intel.com/projects/minnowboard-max</span></a><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">,
release notes are also available on the site, so you can see what you are getting.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Note: the firmware is available in both 32 and 64 bit versions, as the UEFI specification mandates that the Firmware and OS should be running in the same mode
(32 vs 64 bit) on each platform. <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">More about the Firmware:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">When the MinnowBoard MAX was under development, it was determined that a generic firmware, which could support a lot of standard Operating Systems should be provided,
hence the generic UEFI firmware. This is much like the BIOS found on most (more) recent PC like devices. It can boot to Windows, most of the Linux distributions, and several other operating systems capable of UEFI boot. The firmware also provides the UEFI
Shell (a firmware based monitor/execution environment which allows users to experiment on their platform before OS boot), a hardware/device management (setup) capability, and boot device selection (more setup) capability. So the firmware provided is a good
solid boot image (tested and verified on platforms before distribution) developed for maximum flexibility and minimum fuss to the final user.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">It should also be noted that the MinnowBoard MAX firmware is ‘open source’, though there are some binary packages (due to hardware IP considerations). However
a developer can get the sources and “roll their own” custom firmware based on those sources.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">However, the MinnowBoard MAX was designed as an experimenter board, so there is an SPI header on the board, to allow owners to re-flash the firmware (via a SPI
programmer) to any other firmware they desire (please recognize the risks associated in modifying a firmware on a platform). So basically, developers can create other boot firmware images (CoreBoot, Uboot, whatever) and try them on their MinnowBoard.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Sincerely,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:18.0pt;font-family:"French Script MT";color:#1F497D">Michael Krau</span><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><a name="_____replyseparator"></a><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> elinux-MinnowBoard [mailto:elinux-minnowboard-bounces@lists.elinux.org]
<b>On Behalf Of </b>Douglas Kryder<br>
<b>Sent:</b> Wednesday, May 03, 2017 12:31 AM<br>
<b>To:</b> MinnowBoard Development and Community Discussion <elinux-minnowboard@lists.elinux.org><br>
<b>Subject:</b> Re: [MinnowBoard] repair minnowboard power supply<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Patrick,<o:p></o:p></p>
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<p class="MsoNormal">That certainly is good news. Thanks for the info. Yes, there is firmware that supplies a BIOS of sorts. It is user flashable. I think .094 is the latest. That boots and then loads what you tell it to. I guess that is a holdover from Microsoft
days, being an Intel product. I have a SATA drive that has Linux mint which is what I run. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On May 3, 2017 12:10 AM, "Patrick Mulder" <<a href="mailto:mulder.patrick@gmail.com">mulder.patrick@gmail.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">good news, the repair worked, and the minnowboard is running again.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I was wondering how the board boots actually from the SD card now. Does it have flash memory for the first level boot, e.g. where a bootloader looks for the sd card?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Fri, Mar 24, 2017 at 11:57 PM, Douglas Kryder <<a href="mailto:dkryder@gmail.com" target="_blank">dkryder@gmail.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">yes, it is U35 which goes bad. it takes some soldering skills to replace it.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Fri, Mar 24, 2017 at 1:54 PM, Krau, Michael P <<a href="mailto:michael.p.krau@intel.com" target="_blank">michael.p.krau@intel.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><a name="m_3289686549045675052_m_5650786351404359"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">If I remember correctly, (from back in the early
days, when this was a more common event):</span><o:p></o:p></a></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">The schematic page 22 is of more value. I believe when 12vts is applied, the chip U35 was the first
(and usually only) part to go south. </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Though there should be some discussion of this in earlier threads (about 2 + years ago).
</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Sincerely,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:18.0pt;font-family:"French Script MT";color:#1F497D">Michael Krau</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> elinux-MinnowBoard [mailto:<a href="mailto:elinux-minnowboard-bounces@lists.elinux.org" target="_blank">elinux-minnowboard-bounces@lists.elinux.org</a>]
<b>On Behalf Of </b>Patrick Mulder<br>
<b>Sent:</b> Friday, March 24, 2017 1:04 PM<br>
<b>To:</b> <a href="mailto:elinux-minnowboard@lists.elinux.org" target="_blank">elinux-minnowboard@lists.elinux.org</a><br>
<b>Subject:</b> [MinnowBoard] repair minnowboard power supply</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hello,<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">unfortunately, I applied 12V instead of 5V on the DC jack.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Now, only 1 of 2 diodes is lightning up.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I am looking at:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><a href="http://wiki.minnowboard.org/images/b/bd/Minnowboard_Turbot_X205_Sch.pdf" target="_blank">http://wiki.minnowboard.org/images/b/bd/Minnowboard_Turbot_X205_Sch.pdf</a><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">p. 29:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">5 V DC --> NMOS and Switching supply . Not sure where to look for the broken IC from this. What could I do to repair the board?<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Thanks a lot!<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Patrick<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">_______________________________________________<br>
elinux-MinnowBoard mailing list<br>
<a href="mailto:elinux-MinnowBoard@lists.elinux.org" target="_blank">elinux-MinnowBoard@lists.elinux.org</a><br>
<a href="http://lists.elinux.org/mailman/listinfo/elinux-minnowboard" target="_blank">http://lists.elinux.org/mailman/listinfo/elinux-minnowboard</a><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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_______________________________________________<br>
elinux-MinnowBoard mailing list<br>
<a href="mailto:elinux-MinnowBoard@lists.elinux.org" target="_blank">elinux-MinnowBoard@lists.elinux.org</a><br>
<a href="http://lists.elinux.org/mailman/listinfo/elinux-minnowboard" target="_blank">http://lists.elinux.org/mailman/listinfo/elinux-minnowboard</a><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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_______________________________________________<br>
elinux-MinnowBoard mailing list<br>
<a href="mailto:elinux-MinnowBoard@lists.elinux.org">elinux-MinnowBoard@lists.elinux.org</a><br>
<a href="http://lists.elinux.org/mailman/listinfo/elinux-minnowboard" target="_blank">http://lists.elinux.org/mailman/listinfo/elinux-minnowboard</a><o:p></o:p></p>
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