Hm, I may have been wrong, would be nice to have someone who owns one of these boards to verify that: 1). The first stage bootloader doesn't require signing.

Hm, I may have been wrong, would be nice to have someone who owns one of these boards to verify that: 1). The first stage bootloader doesn't require signing. 2). The first stage bootloader starts in EL3 mode (ie. BootROM doesn't exit it like it did on some OMAP dev boards)