bytes of useless zeroes in the final image.

link-time check for section overlaps.  (In order to avoid wasting
space in the executable image, .bss16 will overlap with the following
section, which is .text).

by PXE and NBI) and UNDI packets (as used by undinet and UNDI).

Implement PXENV_RESTART_TFTP.

entirely self-hosted (which avoids problems when building the same
tree on multiple systems - e.g. when you have /home NFS-mounted).

Also saves around 50 bytes in total - not sure why.

entirely self-hosted (which avoids problems when building the same
tree on multiple systems - e.g. when you have /home NFS-mounted).

Also saves around 50 bytes in total - not sure why.

clean separation between loading and starting, but does mean that more
PXE stacks survive the process.

Added basic El Torito ISO image boot capability

version.

somewhat redundant, and also causes gas to complain when we include
the profiling code (which uses an i586 instruction).

doesn't want to go to the hassle of processing a full memory map.

initrds.

Parse command line for "vga=" and "mem=" parameters

Move pxe_boot() code to pxe_image.c

set_fbms() will also update the E820 hidden region.

userptr_add().

to the REAL_CODE interface.

architecture-dependent and is needed by the ELF code.

it directly to undi_load_pci().

UNDI stack.

able to populate the structure.

undi_rom rather than struct pxe_driver.  (This is part of the naming
consistency fixes).

function prefix "undinet_" and the variable name "undinic" in undinet.c,
so that we can reserve the variable name "undi" for a struct undi_device.

The idea is that we preserve the Etherboot 5.4 convention that the "UNDI"
code refers to our using an underlying UNDI stack, while the "PXE" code
refers to our providing a PXE API.