When the discrete graphic in COM21 slot,use it firstly
and the intergrate graphic can not work.
If nothing in pcie-slot(COM21),use the intergrate graphic.
pmon/cmds/bootparam.c: In this file, use the special->resource[0] to
pass the sharevram and vramsize to the kernel.And you must use special->resource[0]
to pass the two values.
NOTICE:
1, This function only work well for ati-card and nvida card do not be supportted.
Now,HD4500,HD4350 and HD5750 have been tested. They are OK.
2, When you open the CONFIG_UMA to use UMA modle in PMON, you can not use the discrete graphic.
Target:Bonito3a780e,Bonito3b780e,Bonito3c780e