robin.thoni/ipxe - git rthoni.com

Michael Brown 9a93db3f09 [pxe] Provide PXENV_FILE_EXIT_HOOK only for ipxelinux.0 builds PXENV_FILE_EXIT_HOOK is designed to allow ipxelinux.0 to unload both the iPXE and pxelinux components without affecting the underlying PXE stack. Unfortunately, it causes unexpected behaviour in other situations, such as when loading a non-embedded pxelinux.0 via undionly.kpxe. For example: PXE ROM -> undionly.kpxe -> pxelinux.0 -> chain.c32 to boot hd0 would cause control to return to iPXE instead of booting from the hard disk. In some cases, this would result in a harmless but confusing "No more network devices" message; in other cases stranger things would happen, such as being returned to the iPXE shell prompt. The fundamental problem is that when pxelinux detects PXENV_FILE_EXIT_HOOK, it may attempt to specify an exit hook and then exit back to iPXE, assuming that iPXE will in turn exit cleanly via the specified exit hook. This is not a valid assumption in the general case, since the action of exiting back to iPXE does not directly cause iPXE to exit itself. (In the specific case of ipxelinux.0, this will work since the embedded script exits as soon as pxelinux.0 exits.) Fix the unexpected behaviour in the non-ipxelinux.0 cases by including support for PXENV_FILE_EXIT_HOOK only when using a new .kkkpxe format. The ipxelinux.0 build process should therefore now use undionly.kkkpxe instead of undionly.kkpxe. Signed-off-by: Michael Brown <mcb30@ipxe.org>		13 lat temu
contrib	[contrib] Update rom-o-matic to build iPXE	13 lat temu
src	[pxe] Provide PXENV_FILE_EXIT_HOOK only for ipxelinux.0 builds	13 lat temu
COPYING	Initial revision	19 lat temu
COPYRIGHTS	[build] Rename gPXE to iPXE	14 lat temu
README	[doc] Re-add README file	14 lat temu

iPXE README File

Quick start guide:

   cd src
   make

For any more detailed instructions, see http://ipxe.org