24ffda4701
Using the latest mkisofs it is possible to generate 3 different types
of ISO images, which can be used in various scenarios.
1) PCBIOS Only ISO
- This option remains unchanged by this commit
- Uses syslinux menus
- Can be directly copied with dd to a USB device
- Can be burned to optical media
2) EFI Only ISO
- Uses grub 2 menus
- Can be burned to optical media
- If you want to use this image on a USB device
extra steps must be taken in order to format the USB
device with fat32, and copy an EFI loader which will
in turn load the iso image
3) PCBIOS / EFI ISO
- This is a hybrid image ISO that will work for case 1 or 2
as above with the same restrictions and boot menu types
depending on what type of firmware is installed on
the hardware or depending on if EFI or "Legacy Boot" is
enabled on some UEFI firmwares.
The syslinux.bbclass is now always required because that is where the
isohybrid dependencies come from as well as the configuration data for
the isohybrid. The isohybrid is the secret sauce which allows the ISO
to work as optical media or as a disk image on USB or a HDD/SSD.
[YOCTO #4100]
(From OE-Core rev: a4baf911ab9d306ce5200e7d794ed6a9ccb25f30)
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Poky
Poky is an integration of various components to form a complete prepackaged build system and development environment. It features support for building customised embedded device style images. There are reference demo images featuring a X11/Matchbox/GTK themed UI called Sato. The system supports cross-architecture application development using QEMU emulation and a standalone toolchain and SDK with IDE integration.
Additional information on the specifics of hardware that Poky supports is available in README.hardware. Further hardware support can easily be added in the form of layers which extend the systems capabilities in a modular way.
As an integration layer Poky consists of several upstream projects such as BitBake, OpenEmbedded-Core, Yocto documentation and various sources of information e.g. for the hardware support. Poky is in turn a component of the Yocto Project.
The Yocto Project has extensive documentation about the system including a reference manual which can be found at: http://yoctoproject.org/documentation
OpenEmbedded-Core is a layer containing the core metadata for current versions of OpenEmbedded. It is distro-less (can build a functional image with DISTRO = "") and contains only emulated machine support.
For information about OpenEmbedded, see the OpenEmbedded website: http://www.openembedded.org/
Where to Send Patches
As Poky is an integration repository, patches against the various components should be sent to their respective upstreams.
bitbake: bitbake-devel@lists.openembedded.org
meta-yocto: poky@yoctoproject.org
Most everything else should be sent to the OpenEmbedded Core mailing list. If in doubt, check the oe-core git repository for the content you intend to modify. Before sending, be sure the patches apply cleanly to the current oe-core git repository. openembedded-core@lists.openembedded.org
Note: The scripts directory should be treated with extra care as it is a mix of oe-core and poky-specific files.