<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">+chromium-os-dev</div><div class="gmail_quote">bcc: coreboot</div><div class="gmail_quote"><br></div><div class="gmail_quote">On Fri, Apr 21, 2017 at 11:27 AM, <span dir="ltr"><<a href="mailto:tturne@codeaurora.org" target="_blank">tturne@codeaurora.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
Folks,<br>
If this query more correctly belongs on ChromiumOS list, I will re-post.<br></blockquote><div><br></div><div>Yeah, it does. This tool is only related to Chromium OS (and in fact way older than coreboot on Chromebooks).</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
This utility appears to be the safe/practical way to interact with the coreboot firmware on an actual chromebook device.<br>
The factory image for kevin has this located at /usr/sbin/chromeos-firmwareupd<wbr>ate.<br>
<br>
I have locally built three "flavors" of kevin: "normal" dev and test.<br></blockquote><div><br></div><div>(We call "normal" "base", btw. If you could build a firmware updater, all of these images would have it.)</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
I can boot all three of these images in Developer-Mode and none of them have /usr/sbin/chromeos-firmwareupd<wbr>ate present.<br>
<br>
Q.1) How do I get chromeos-firmwareupdate populated on a local build? Do I have to generate a recovery image from my test image?<br></blockquote><div><br></div><div>I think the difference here is whether you have access to the "internal" Chromium manifest. (If you do, you should have a 'src/private-overlays/overlay-kevin-private' folder in your chroot. I presume you don't.) For various reasons (non-free blobs, etc.) we sometimes have to keep sources and ebuilds for components of Chrome OS internal. The firmware updater ebuilds are all internal because they usually download a stable firmware image from a Google server that is not accessible externally.</div><div><br></div><div>It's possible to write your own ebuild that will build an updater from the firmware you have (updater sources and infrastructure are all open-source under 'src/platform/firmware') and merge it into your system image, but it's kinda complicated if you're not familiar with ebuilds (and I can't link you to a good template, unfortunately, since they're all internal). I think you would have an easier time unpacking an existing firmware updater (with chromeos-firmwareupdate --sb_extract), replacing the firmware (bios.bin and ec.bin) with the one you want, and then repacking it (--sb_repack) and copying it manually onto your image.</div></div></div></div>