SSD for PBP

[zaius]

is SPI flashed? with what? it's not. when it is, it's uboot there, the firmware is uboot (in all possible components - rockchip blobs, SPL/TPL, ATF etc), there is nothing else over there. when SPI is not flashed, uboot is on eMMC and gets loaded from there. uboot looks for the OS, based on how its environment variables and scripts are configured (this is what depends on the builds and what is changeable by users in the scope of uboot possibilities).

Thank you for your response. So the PBP ships with a blank SPI?

Also, just to be clear, this is uboot on the eMMC: https://www.denx.de/wiki/U-Boot/