mkdir Tiano
cd Tiano
svn co https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2 edk2 --username guest
cd edk2
svn co https://edk2-fatdriver2.svn.sourceforge.net/svnroot/edk2-fatdriver2/trunk/FatPkg FatPkg --username guest
cd ..

make -C edk2/BaseTools

export EDK_TOOLS_PATH=$(pwd)/edk2/BaseTools
cd edk2
. ./edksetup.sh BaseTools

vi Conf/target.txt

ACTIVE_PLATFORM       = OvmfPkg/OvmfPkgIa32.dsc
TOOL_CHAIN_TAG        = GCC46

------
#TODO
TARGET_ARCH = IA32 X64
------

build -D DEBUG_ON_SERIAL_PORT

--> ./Build/OvmfIa32/DEBUG_GCC46/FV/DXEFV.Fv