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diff --git a/docs/index.html b/docs/index.html index f3439c4..d06cefd 100644 --- a/docs/index.html +++ b/docs/index.html @@ -31,7 +31,12 @@ <li><a href="hcl/index.html">Hardware compatibility list</a> - <a href="https://www.gnu.org/distros/">GNU/Linux</a> is expected to be running on your device.</li> <li><a href="install/index.html">How to install libreboot</a></li> <li><a href="gnulinux/index.html">How to install GNU/Linux on a libreboot system</a></li> - <li><a href="git/index.html">How to use the git repository and build libreboot from source</a></li> + <li> + <a href="git/index.html">How to use the git repository and build libreboot from source</a> + <ul> + <li><a href="maintain/index.html">Maintaining libreboot</a></li> + </ul> + </li> <li><a href="security/index.html">Hardware security</a></li> <li><a href="hardware/index.html">Hardware maintenance</a></li> <li><a href="grub/index.html">GRUB payload</a></li> diff --git a/docs/maintain/index.html b/docs/maintain/index.html new file mode 100644 index 0000000..10c0652 --- /dev/null +++ b/docs/maintain/index.html @@ -0,0 +1,210 @@ +<!DOCTYPE html> +<html> +<head> + <meta charset="utf-8"> + <meta name="viewport" content="width=device-width, initial-scale=1"> + + <style type="text/css"> + @import url('../css/main.css'); + </style> + + <title>Maintaining libreboot</title> +</head> + +<body> + + <div class="section"> + <h1 id="pagetop">Maintaining libreboot</h1> + <p> + This section relates to maintaining libreboot. <b>Work-in-progress</b> + </p> + <p> + Do not follow anything here to the letter; is it only a guide + representing how libreboot is maintained (for reference). This + will be added to frequently from now on. + </p> + <p> + Or <a href="../index.html">Back to main index</a>. + </p> + <ul> + <li><a href="#updating_coreboot">Updating coreboot-libre</a></li> + </ul> + </div> + + <div class="section"> + + <h1 id="updating_coreboot">Updating coreboot-libre</h1> + + <p> + Coreboot-libre is the name of the deblobbed coreboot sources + used in libreboot. It is also the name of the collection + of scripts used for deblobbing coreboot, on each new update. + </p> + + <p> + This section shows an example of how to update (re-base) to + the latest version of coreboot, how to update the deblobbing + scripts, and so on. <b>This does not teach you how to + change what custom patches are used, nor does it tell + you how to add new boards to libreboot. It assumes that you + simply want to re-base to the latest version (for instance, + there could be bug fixes that you want). For those things + not listed in this section, you can refer to other sections + on this page instead.</b> + </p> + + <p> + Open these files in your editor (you will most likely be editing them): + </p> + <ul> + <li>resources/scripts/helpers/download/coreboot</li> + <li>resources/scripts/helpers/build/module/coreboot</li> + <li>resources/utilities/coreboot-libre/deblob</li> + <li>resources/utilities/coreboot-libre/nonblobs</li> + <li>resources/utilities/coreboot-libre/nonblobs_notes</li> + <li>resources/scripts/helpers/build/roms/helper</li> + <li>resources/scripts/helpers/build/roms/withgrub</li> + </ul> + + <p> + Firstly, download coreboot. Do <b>not</b> use <b>./download coreboot</b> + for this, just clone coreboot, as it does in that script, like so:<br/> + $ <b>git clone http://review.coreboot.org/coreboot</b> + </p> + + <p> + $ <b>cd coreboot/</b><br/> + Get the ID of the latest commit in this clone, by reading the commit ID using + e.g.:<br/> + $ <b>git log</b><br/> + In <i>resources/scripts/helpers/download/coreboot</i> you will + find a line that says <i><b>git reset --hard</b></i> and then + a commit ID next to it. Replace this with the commit ID of the latest + commit from the coreboot version that you just downloaded. + </p> + <p> + Delete the .git* resources. For example:<br/> + $ <b>rm -rf .git*</b><br/> + ...this is to avoid the deblobbing script from picking up files + in there as blobs, which would be only false positives and + increase the amount of time taken. Now come out of coreboot:<br/> + $ <b>cd ../</b> + </p> + + <p> + Check all coreboot file names/paths in <i>deblob</i>; if any + of them no longer exist at that name/path in the coreboot tree that you downloaded, + delete the reference(s) in <i>deblob</i>. + </p> + + <p> + Check all coreboot file names/paths in <i>nonblobs</i>; if + any of them no longer exist at that name/path in the coreboot tree that you downloaded, + delete the reference in <i>nonblobs</i>. + </p> + + <p> + Now, back in the main root directory of libreboot (git repository), + run the deblob script. This is to prevent the <i>findblobs</i> + scripts from finding the blobs that are already deleted + when running the <i>deblob</i> script. Like so:<br/> + $ <b>./resources/utilities/coreboot-libre/deblob</b> + </p> + + <p> + Now search for new blobs:<br/> + $ <b>cd resources/utilities/coreboot-libre/</b><br/> + $ <b>./findblobs</b><br/> + WARNING: this will take a <b>*long*</b> time. Be patient! + What this will do is look through the coreboot source directory, + looking for blobs. It will not find the blobs that you deleted + before (because they no longer exist), and it will ignore any + files listed in <i>nonblobs</i>. + </p> + + <p> + Once the <i>findblobs</i> script has finished, check the file + <i>tocheck</i> (from the root, this will be <i>resources/utilities/coreboot-libre/tocheck</i>). + These are the files detected as blobs; some might be blobs, some not. + The <i>findblobs</i> script doesn't know how to determine between blobs + and non-blobs, it only knows patterns. Distinguishing between blobs and + non-blobs must be performed by you, the human being. + </p> + <ul> + <li> + Files in <i>tocheck</i> that you identify as blobs, + should be added appropriately to <i>resources/utilities/coreboot-libre/deblob</i> + </li> + <li> + Files in <i>tocheck</i> that you identify as non-blobs, + should be added appropriately to <i>resources/utilities/coreboot-libre/nonblobs</i> - + also, if you feel it necessary, add an explanation of it in + <i>resources/utilities/coreboot-libre/nonblobs_notes</i> + </li> + </ul> + + <p> + Now come back to the main libreboot root directory (root + of the git clone). If you are still in resources/utilities/coreboot-libre/ + for instance, you would do something like:<br/> + $ <b>cd ../../../</b> + </p> + + <p> + Now delete the coreboot directory:<br/> + $ <b>rm -rf coreboot/</b> + </p> + + <p> + Download coreboot again, only this time, using the download + script. The download script also applies custom patches + to coreboot (see resources/scripts/helpers/download/coreboot); + if they do not apply anymore, you will have to re-base them + and then update <i>resources/scripts/helpers/download/coreboot</i> + accordingly. Anyway, download coreboot like so:<br/> + $ <b>./download coreboot</b> + </p> + + <p> + If the custom patches no longer apply, and you have to re-base + (or replace?) some patches, please do this in coreboot upstream, + not in libreboot. Then re-include new patches from upstream, + into libreboot. Here is coreboot's guide for contributing + patches:<br/> + <a href="http://www.coreboot.org/Git">http://www.coreboot.org/Git</a>. + </p> + + <p> + Update all configs:<br/> + $ <b>./build config corebootupdate</b><br/> + This simply takes all of the coreboot <b>.config</b> files from + <i>resources/libreboot/config/</i> and does <b>make oldconfig</b> + on them. It usually works. If it doesn't, you'll need to recreate + those configs from scratch using <b>make menuconfig</b> in coreboot + (see <a href="../git/index.html#config">../git/index.html#config</a>) + </p> + + <p> + <a href="#pagetop">Back to top of page</a>. + </p> + + </div> + + <div class="section"> + + <p> + Copyright © 2015 Francis Rowe <info@gluglug.org.uk><br/> + This document is released under the Creative Commons Attribution-ShareAlike 4.0 International Public License and all future versions. + A copy of the license can be found at <a href="../license.txt">../license.txt</a>. + </p> + + <p> + This document is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See <a href="../license.txt">../license.txt</a> for more information. + </p> + + </div> + +</body> +</html> |