when the SECTION FV_IMAGE = $(XX)/XX.Fv, the Fv file should relative to WORKSPACE, so when we search the XX.Fv.txt file, we should search the path relative to workspace first. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Yonghong Zhu <yonghong.zhu@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com>