Difference between revisions of "FreeBSD"

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This article describes how to build coreboot v2 on FreeBSD and boot FreeBSD using coreboot and [[ADLO]] inside [[QEMU]].
FreeBSD should work out of the box with SeaBIOS. In case of problems, please tell us through the [[Mailinglist]]
= Requirements =
All steps outlined in this article have been performed using FreeBSD 7.0-BETA1/i386. Other versions or architectures of FreeBSD might work, too, but have not been tested. The patches mentioned in this article have been created against coreboot v2, revision 2897.
In order to build ADLO on FreeBSD, you need the following ports installed:
* <tt>devel/gmake</tt>
* <tt>devel/dev86</tt>. See [[#Building the 8086 development environment|details below]].
To build coreboot on FreeBSD, you need
* <tt>devel/gmake</tt>
* <tt>lang/python</tt>. At the time of writing this article, that port installs Python 2.4. Possibly other versions of Python also work but haven't been tried.
To boot FreeBSD in QEMU you need
* <tt>emulators/qemu</tt> with modifications. Please refer to the [[QEMU Build Tutorial]] for details. Please note that QEMU versions later than 0.9.0 do not seem to work correctly (require the vgabios-cirrus.bin even when started with -nographic and output does not work after ADLO is started).
= Obtaining coreboot =
See [[Download coreboot|this page]] on how to download coreboot. I recommend you checkout the latest version of coreboot v2 using Subversion.
== Applying the required patches ==
The coreboot build process currently assumes that the <tt>make</tt> utility is GNU make. This isn't true on FreeBSD (or the other BSDs for that matter), where GNU make is installed as <tt>gmake</tt>.
A patch which addresses this can be found [http://www.coreboot.org/images/b/b6/LinuxBIOS_ADLO_FreeBSD.tgz here]. To download and apply this patch, run the following commands from the top-level directory of your coreboot source tree (e.g. /home/phs/LinuxBIOSv2):
$ ftp http://www.coreboot.org/images/b/b6/LinuxBIOS_ADLO_FreeBSD.tgz
$ tar xzf LinuxBIOS_ADLO_FreeBSD.tgz
$ patch -p0 < LinuxBIOS_ADLO_FreeBSD.diff
Alternatively, the patch [http://www.linuxbios.org/pipermail/linuxbios/attachments/20071105/923a1f3f/attachment.bat attached] to this [http://www.coreboot.org/pipermail/linuxbios/2007-November/026759.html message] can be used. An updated patch that applies cleanly to Revision 3066 can be downloaded [http://www.coreboot.org/images/0/0e/Coreboot_ADLO_FreeBSD-r3066.tgz here].
= Building ADLO =
In order to boot FreeBSD using coreboot, ADLO is used as a payload. Therefore, it must be built before the coreboot image can be built. Building ADLO on FreeBSD requires that the 8086 development environment is installed. See the [[#Building the 8086 development environment|following section]] for details.
ADLO is part of the coreboot v2 source tree. Assuming you have [[#Applying the required patches|applied the required patches]], it can be built by issuing the following commands from the top-level directory of your local source tree:
$ cd util/ADLO
$ gmake
You will now find the ADLO payload at <tt>util/ADLO/payload</tt>.
== Building the 8086 development environment ==
ADLO requires the <tt>devel/dev86</tt> port which installs the 8086 development environment. This is a new port not yet included in the FreeBSD Ports tree, see Problem Report [http://www.freebsd.org/cgi/query-pr.cgi?pr=117480 ports/117480]. To build the port, download and extract the shell archive attached to the problem report.
$ ftp -o devel_dev.shar http://www.freebsd.org/cgi/query-pr.cgi?prp=117480-1-shar
$ sh devel_dev.shar
$ cd dev86
$ su
# make install
This has to be done only once, before building ADLO. You don't have to reinstall the port if you rebuild ADLO.
= Building coreboot =
The [[QEMU_Build_Tutorial|QEMU build tutorial]] covers all steps required to build coreboot for QEMU. As a quick reference, assuming you have [[#Applying the required patches|applied the required patches]] do:
$ cd targets
$ ./buildtarget emulation/qemu-i386
$ cd emulation/qemu-i386/qemu-i386
$ gmake
Make sure you use the <tt>gmake</tt> utility on FreeBSD!
This should give you a file called <tt>qemu-bios.rom</tt> in <tt>targets/emulation/qemu-i386/qemu-i386</tt>. Copy this file to a convenient location, e.g. your home directory, and rename it to <tt>bios.bin</tt>.
$ cp qemu-bios.rom ~/bios.bin
You will need it later.
= Booting FreeBSD inside QEMU =
If you already have a FreeBSD installation inside QEMU, you can boot it using coreboot with the following command:
$ qemu -kernel-kqemu -hda freebsd.img -nographic -L ~
This assumes, that there is a file called <tt>bios.bin</tt> in your home directory that contains coreboot with an ADLO payload. The file <tt>freebsd.img</tt> should contain your FreeBSD installation. Make sure it uses the serial console, though, as graphical output will not work when booted using coreboot.
== Installing FreeBSD inside QEMU ==
Installing FreeBSD inside QEMU is pretty straight forward. If you already have a working installation, you can skip this section.
First you need to create a QEMU disk:
$ qemu-img create freebsd.img 1024M
This will create a QEMU virtual disk named <tt>freebsd.img</tt> with a capacity of 1 GByte. Next, install the base system using one of the ISO files provided by the FreeBSD Project at [ftp://ftp.freebsd.org/pub/FreeBSD/ISO-IMAGES-i386 ftp://ftp.freebsd.org/pub/FreeBSD/ISO-IMAGES-i386] and have QEMU use it as the boot device. In this example, the FreeBSD 7.0-BETA1 bootonly disc [ftp://ftp.freebsd.org/pub/FreeBSD/ISO-IMAGES-i386/7.0/7.0-BETA1-i386-bootonly.iso] is used:
$ qemu -kernel-kqemu -hda freebsd.img -cdrom 7.0-BETA1-i386-bootonly.iso -boot d
Inside QEMU, perform an installation as you normally would. See the [http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/install.html FreeBSD Handbook] for details. After the installation has finished, boot up FreeBSD once ''without'' using coreboot.
$ qemu -kernel-kqemu -hda freebsd.img
In the FreeBSD installation running inside QEMU add the following to the file <tt>/boot/loader.conf</tt>:
This will cause FreeBSD to use the first serial port as a console. Both the Loader's and the Kernel's messages will end up there. This is important as graphical output won't work once FreeBSD is booted using coreboot and ADLO.

Revision as of 07:12, 18 January 2014

FreeBSD should work out of the box with SeaBIOS. In case of problems, please tell us through the Mailinglist