On Sun, Feb 28, 2016 at 9:28 AM, Brice Buronfosse <[email protected]> wrote:
> Hi,
>
> I am currently documenting myself on the open-source hardware (computers)
> presently available. My current understanding is that the BeagleBoards are
> all open-source hardware, however I cannot find mentions of the BIOS part.
> Side note: I could find that information bit on the Raspberry
> (http://raspberrypi.stackexchange.com/questions/8475/what-bios-does-rapsberry-pi-use).

The am335x used on the bbb contains a small rom based bootloader.
It's smart enough to read a microSD (raw and fat/ext partitions)
(along with usart/usb-slave/etc), but can't init main memory.

The standard boot method for us:

rom boot -> MLO (from: u-boot/spl) -> u-boot.img (from u-boot)

http://www.denx.de/wiki/U-Boot

https://eewiki.net/display/linuxonarm/BeagleBone+Black#BeagleBoneBlack-Bootloader:U-Boot

https://eewiki.net/display/linuxonarm/BeagleBone+Black#BeagleBoneBlack-SetupmicroSDcard

>
> Essentially I was wondering if I would be able to use Libreboot on a
> BeagleBone Black.

Go for it, there's a place on the bottom of the pcb where you can
solder a ti-jtag connector.

Good Luck!

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

-- 
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