running two operating systems on the renesas salvator xs h3 card

i want to run two operating systems on the renesas salvator xs h3 card(Linux and Android). I'm doing virtualization using xen. In turn, when I install the first operating system on this card, the first framebuffer(fb0) occurs.However, fb1 does not occur for the second operating system that I installed with virtualization. I want to get the image on Linux from one of the two HDMI outputs on the card. From the other one, I want to get the image from the Android operating system. But after the first operating system stands up, the first fb0 occurs, and I can't put an image of the second operating system on the screen because fb1 doesn't occur, what can I do?
Thanks in advance for the help.