Signed-off-by: NDaniel Hellstrom <daniel@gaisler.com>

The patch introduces the CRITICAL feature of POST tests. If the test marked as POST_CRITICAL fails then the alternative, post_critical, boot-command is used. If this command is not defined then U-Boot enters into interactive mode.
Signed-off-by: NDmitry Rakhchev <rda@emcraft.com>
Signed-off-by: NYuri Tikhonov <yur@emcraft.com>

Signed-off-by: NMike Frysinger <vapier@gentoo.org>

for more information

  applications: instead of using (PPC-specific) system calls we now
  use a jump table; please see doc/README.standalone for details

* Patch by Dave Westwood, 24 Jul 2003:
  added support for Unity OS (a proprietary OS)

* Patch by Erwin Rol, 27 Feb 2003:
  Add support for RTEMS

* Add image information to README

* Fix dual PCMCIA slot support (when running with just one
  slot populated)

* Add VFD type detection to trab board

* extend drivers/cs8900.c driver to synchronize  ethaddr  environment
  variable with value in the EEPROM

* Start adding MIPS support files

  Add support for i386 architecture and AMD SC520 board

* Patch by Pierre Aubert, 12 Nov 2002:
  Add support for DOS filesystem and booting from DOS floppy disk