armnexus-onecortex-a8

Making the VROM load an image and jump to an address on Nexus One?

I want to try experimenting with running low level code my Nexus One phone, but I can't find a suitable manual describing how.

As far as I know, the VROM does some initial bootstrapping before jumping to the bootloader which would then unpack and load the Linux kernel. What I want to be able to do is to pass a custom image to the VROM and make it jump to my entry point (place an image at a specific address and make the CPU jump to it).

Is it possible? And is there any documentation describing the SoC used by Nexus One?

Solution

  • Figured it out. It's impossible.

    Nexus One's first stage boot-loader has no facilities for bootstrapping custom code. Has to be done with JTAG.