Open Firmware

From OpenBIOS
Revision as of 15:20, 13 August 2007 by Stepan (talk | contribs) (some initial explanation on how to build it.)
Jump to navigation Jump to search


In 2006 the company of Open Firmware inventor Mitch Bradley, Firmworks, Inc, released their Open Firmware implementation under a BSD license. This code shares some code with SUN's OpenBOOT implementation. It supports the x86 architecture and runs, amongst others, as a LinuxBIOS payload. It is the firmware implementation on the OLPC.


The code can be browsed online with the ViewVC facility.

The repository is available through Subversion:

You can check it out as follows:

 $ svn co svn://

if you want a specific revision:

 $ svn co svn:// -r 35

If your company installed a firewall that blocks the svn port (3690) you can also check out using the webdav frontend:

$ svn co openfirmware


You should change openfirmware/cpu/x86/pc/biosload/config.fth:

Index: config.fth
--- config.fth  (revision 533)
+++ config.fth  (working copy)
@@ -9,7 +9,7 @@
 \ - Image Format - Example Media - previous stage bootloader
 \ - (Syslinux) COM32 format - USB Key w/ FAT FS - Syslinux
-create syslinux-loaded
+\ create syslinux-loaded
 \ - Linux kernel format - USB Key w/ FAT FS - LinuxBIOS w/ stripped Linux  payload 
 \ create bzimage-loaded
@@ -19,7 +19,7 @@
 \ create etherboot-variant  \ Enable additional tweaks for Etherboot
 \ - ELF format (no pheader) - ROM - LinuxBIOS direct
-\ create linuxbios-loaded
+create linuxbios-loaded
 \ Load and run in qemu
 \ create qemu-loaded 


$ cd /home/stepan/svn/openfirmware/cpu/x86/pc/biosload/build
$ make

This will result in oflb.elf