I am more knowledgeable about the arm / android world.
I do wonder if for the chrome os world there are SoC+BSP vs ChromeOS feature requirements that cause this lack of ability to support (e.g. trust zone etc)
I do wonder if for the chrome os world there are SoC+BSP vs ChromeOS feature requirements that cause this lack of ability to support (e.g. trust zone etc)
For chromeOS devices, the boot firmware (incl TZ) is owned by Google.