In particular, expose the system UUID as a setting ("smbios/uuid").

The home-grown versions don't work properly for static variadic
functions, when gcc can choose to use a non-standard calling convention.

Replace a printf with a DBG in timer_rtdsc.c
Replace a printf in timer.c with assert
Return proper error codes from timer drivers

Signed-off-by: Alexey Zaytsev <alexey.zaytsev@gmail.com>

Signed-off-by: Alexey Zaytsev <alexey.zaytsev@gmail.com>

	Timer subsystem initialization code in core/timer.c

	Split the BIOS and RTDSC timer drivers from i386_timer.c

	Split arch/i386/firmware/pcbios/bios.c into the RTSDC
	timer driver and arch/i386/core/nap.c

	Split the headers properly:
		include/unistd.h - delay functions to be used by the
					gPXE core and drivers.

		include/gpxe/timer.h - the fimer subsystem interface
					to be used by the timer drivers
					and currticks() to be used by
					the code gPXE subsystems.

		include/latch.h	- removed
		include/timer.h - scheduled for removal. Some driver
					are using currticks, which is
					only for core subsystems.

Signed-off-by: Alexey Zaytsev <alexey.zaytsev@gmail.com>

implemented smbios_get_uuid().

potentially exorbitant amounts of stack space.

allowing any space for this, which makes it surprising that bzImage
loading ever worked.

outside of librm.S.

Add some of the missing parts to libkir.h.

int13.h.

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().