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  1. <!DOCTYPE html>
  2. <html>
  3. <head>
  4. <meta charset="utf-8">
  5. <meta name="viewport" content="width=device-width, initial-scale=1">
  6. <style type="text/css">
  7. @import url('css/main.css');
  8. </style>
  9. <title>Libreboot project documentation</title>
  10. </head>
  11. <body>
  12. <div class="section">
  13. <h1 id="pagetop">Libreboot documentation</h1>
  14. <p>
  15. Information about this release can be found at <a href="release.html">release.html</a>.
  16. Always check <a href="http://libreboot.org">libreboot.org</a> for updates.
  17. </p>
  18. <p>
  19. <a href="#why">What is libreboot?</a>
  20. </p>
  21. <p>
  22. <a href="https://libreboot.org/faq/">Answers to frequently asked questions about Libreboot</a>
  23. </p>
  24. </div>
  25. <div class="section">
  26. <p>
  27. Libreboot is compatible with GNU/Linux and several BSD systems.
  28. </p>
  29. <p>
  30. For GNU/Linux,
  31. have a look at our <a href="distros/">list of GNU/Linux distributions that we recommend</a>.
  32. </p>
  33. <p>
  34. For BSD, refer to <a href="https://libreboot.org/faq/#bsd">the libreboot FAQ</a>. We wish
  35. to merge instructions into the official libreboot documentation, if someone
  36. will provide it.
  37. </p>
  38. <h1>Installing libreboot</h1>
  39. <ul>
  40. <li><a href="hcl/index.html">What systems can I use libreboot on?</a></li>
  41. <li><a href="install/index.html">How to install libreboot</a></li>
  42. <li><a href="gnulinux/index.html">How to install GNU/Linux on a libreboot system</a></li>
  43. <li><a href="bsd/index.html">How to install BSD on a libreboot system</a></li>
  44. </ul>
  45. <h1>Informaton for developers</h1>
  46. <ul>
  47. <li><a href="git/index.html">How to compile the libreboot source code</a></li>
  48. <li><a href="depthcharge/index.html">Depthcharge payload</a></li>
  49. <li><a href="grub/index.html">GRUB payload</a></li>
  50. </ul>
  51. <h1>Other information</h1>
  52. <ul>
  53. <li><a href="hardware/index.html">Hardware modifications</a></li>
  54. <li><a href="misc/index.html">Miscellaneous</a></li>
  55. </ul>
  56. </div>
  57. <div class="section" id="why">
  58. <h1>About the libreboot project</h1>
  59. <p>
  60. Libreboot is a free BIOS or UEFI replacement (<a href="https://en.wikipedia.org/wiki/Free_software">free as in freedom</a>);
  61. libre <em>boot firmware</em> that initializes the hardware and starts a bootloader for your operating
  62. system.
  63. It's also an open source BIOS, but open source fails to
  64. promote freedom; <em>please call libreboot <strong><a href="https://en.wikipedia.org/wiki/Free_software">free software</a></strong></em>.
  65. </p>
  66. <p>
  67. Libreboot originally began during December 2013, as a commercial effort
  68. by the <a href="https://minifree.org">Ministry of Freedom</a> to achieve
  69. RYF endorsement for a modified ThinkPad X60
  70. (the first system to ever be added to libreboot), which it did then achieve.
  71. </p>
  72. <p>
  73. Back then, the name <i>libreboot</i> didn't exist; the project was nameless,
  74. referring to itself as a <i>deblobbed version of coreboot</i>. The project named
  75. itself libreboot at some point during early 2014, and has since rapidly expanded
  76. to support more hardware and become more user-friendly.
  77. </p>
  78. <p>
  79. Libreboot is a <a href="http://coreboot.org/">coreboot</a> distribution (distro) with proprietary software removed,
  80. intended to be a <a href="https://en.wikipedia.org/wiki/Free_software">free</a>
  81. (libre) 'BIOS' replacement for your computer. The project is aimed at users, attempting to make
  82. coreboot as easy to use as possible.
  83. </p>
  84. <p>
  85. Libreboot has many practical advantages over proprietary boot firmware,
  86. such as faster boot speeds and better security. You can
  87. <a href="gnulinux/index.html">install GNU/Linux with encrypted /boot/</a>,
  88. <a href="http://www.coreboot.org/GRUB2#signed_kernels">verify GPG signatures on your kernel</a>,
  89. put a kernel in the flash chip and more.
  90. </p>
  91. <h2>
  92. The libreboot project has three main goals:
  93. </h2>
  94. <ul>
  95. <li>
  96. <i><u><b>Recommend and distribute only free software</b></u></i>.
  97. Coreboot distributes certain pieces of proprietary software which is needed on some systems.
  98. Examples can include things like CPU microcode updates, memory initialization blobs and so on.
  99. The coreboot project sometimes recommends adding more blobs which it does not distribute, such
  100. as the Video BIOS or Intel's <i>Management Engine</i>. However, a lot of dedicated and talented
  101. individuals in coreboot work hard to replace these blobs whenever possible.
  102. </li>
  103. <li>
  104. <i><u><b>Support as much hardware as possible!</b></u></i>
  105. Libreboot supports less hardware than coreboot, because most systems from coreboot still require
  106. certain proprietary software to work properly. Libreboot is an attempt to support as much
  107. hardware as possible, without any proprietary software.
  108. </li>
  109. <li>
  110. <i><u><b>Make coreboot easy to use</b></u></i>.
  111. Coreboot is notoriously difficult to install, due to an overall lack of user-focussed
  112. documentation and support. Most people will simply give up before attempting to install coreboot.<br/><br/>
  113. Libreboot attempts to bridge this divide, making sure that everything from building
  114. to installing coreboot is automated, as much as is feasibly possible. Secondly, the project
  115. produces documentation aimed at non-technical users. Thirdly, the project attempts
  116. to provide excellent user support via mailing lists and IRC.<br/><br/>
  117. Libreboot already comes with a payload (GRUB), flashrom and other needed parts. Everything
  118. is fully integrated, in a way where most of the complicated steps that are otherwise required,
  119. are instead done for the user in advance.<br/><br/>
  120. You can download ROM images for your libreboot system and install them, without having
  121. to build anything from source. The build system is also fully automated, so building
  122. from source is easy if you wanted to do that (for whatever reason).
  123. </li>
  124. </ul>
  125. <h2>
  126. Libreboot is a coreboot distribution, not a coreboot fork
  127. </h2>
  128. <p>
  129. Libreboot is not a fork of coreboot. Every so often, the project re-bases on the latest
  130. version of coreboot, with the number of custom patches in use minimized.
  131. </p>
  132. <p>
  133. All new coreboot development should be done in coreboot (upstream), not libreboot!
  134. Libreboot is about deblobbing and packaging coreboot in a user-friendly way, where most work
  135. is already done for the user.
  136. </p>
  137. <p>
  138. For example, if you wanted to add a new board to libreboot, you should add it to coreboot first.
  139. Libreboot will automatically receive your code at a later date, when it updates itself.
  140. </p>
  141. <p>
  142. The deblobbed coreboot tree used in libreboot is referred to as <i>coreboot-libre</i>,
  143. to distinguish it as a component of <i>libreboot</i>.
  144. </p>
  145. <h2>
  146. Libreboot is a 'stable' version of coreboot
  147. </h2>
  148. <ul>
  149. <li>
  150. Coreboot uses the <a href="https://en.wikipedia.org/wiki/Rolling_release">rolling release</a> model,
  151. which means that it is not guaranteed to be stable, or to even work at all on a given day.
  152. Coreboot does have a strict code review process, but being such a large project with so many contributors, regressions
  153. are always possible.
  154. </li>
  155. <li>
  156. Libreboot freezes on a particular revision of coreboot, making sure that everything works properly,
  157. making fixes on top of that and repeating this during each subsequent update to a later version
  158. of coreboot. By doing this, it provides a stronger guarantee to the user that the firmware
  159. will be reliable, and not break their system.
  160. </li>
  161. </ul>
  162. <p><a href="#pagetop">Back to top of page.</a></p>
  163. </div>
  164. <div class="section" id="version">
  165. <h1>How do I know what version I'm running?</h1>
  166. <p>
  167. See <a href="https://libreboot.org/faq/#version">https://libreboot.org/faq/#version</a>
  168. </p>
  169. </div>
  170. <div class="section">
  171. <p>
  172. Copyright &copy; 2014, 2015, 2016 Leah Rowe &lt;info@minifree.org&gt;<br/>
  173. Permission is granted to copy, distribute and/or modify this document
  174. under the terms of the Creative Commons Attribution-ShareAlike 4.0 International license
  175. or any later version published by Creative Commons;
  176. A copy of the license can be found at <a href="cc-by-sa-4.0.txt">cc-by-sa-4.0.txt</a>
  177. </p>
  178. <p>
  179. Updated versions of the license (when available) can be found at
  180. <a href="https://creativecommons.org/licenses/by-sa/4.0/legalcode">https://creativecommons.org/licenses/by-sa/4.0/legalcode</a>
  181. </p>
  182. <p>
  183. UNLESS OTHERWISE SEPARATELY UNDERTAKEN BY THE LICENSOR, TO THE
  184. EXTENT POSSIBLE, THE LICENSOR OFFERS THE LICENSED MATERIAL AS-IS
  185. AND AS-AVAILABLE, AND MAKES NO REPRESENTATIONS OR WARRANTIES OF
  186. ANY KIND CONCERNING THE LICENSED MATERIAL, WHETHER EXPRESS,
  187. IMPLIED, STATUTORY, OR OTHER. THIS INCLUDES, WITHOUT LIMITATION,
  188. WARRANTIES OF TITLE, MERCHANTABILITY, FITNESS FOR A PARTICULAR
  189. PURPOSE, NON-INFRINGEMENT, ABSENCE OF LATENT OR OTHER DEFECTS,
  190. ACCURACY, OR THE PRESENCE OR ABSENCE OF ERRORS, WHETHER OR NOT
  191. KNOWN OR DISCOVERABLE. WHERE DISCLAIMERS OF WARRANTIES ARE NOT
  192. ALLOWED IN FULL OR IN PART, THIS DISCLAIMER MAY NOT APPLY TO YOU.
  193. </p>
  194. <p>
  195. TO THE EXTENT POSSIBLE, IN NO EVENT WILL THE LICENSOR BE LIABLE
  196. TO YOU ON ANY LEGAL THEORY (INCLUDING, WITHOUT LIMITATION,
  197. NEGLIGENCE) OR OTHERWISE FOR ANY DIRECT, SPECIAL, INDIRECT,
  198. INCIDENTAL, CONSEQUENTIAL, PUNITIVE, EXEMPLARY, OR OTHER LOSSES,
  199. COSTS, EXPENSES, OR DAMAGES ARISING OUT OF THIS PUBLIC LICENSE OR
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  201. ADVISED OF THE POSSIBILITY OF SUCH LOSSES, COSTS, EXPENSES, OR
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  203. IN PART, THIS LIMITATION MAY NOT APPLY TO YOU.
  204. </p>
  205. <p>
  206. The disclaimer of warranties and limitation of liability provided
  207. above shall be interpreted in a manner that, to the extent
  208. possible, most closely approximates an absolute disclaimer and
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