[Buildroot] [PATCH 2/5] board/raspberrypi: install Device Tree

Vivien Didelot vivien.didelot at savoirfairelinux.com
Wed Mar 18 23:05:28 UTC 2015


Hi Yann,

> > Add a post-image script to Raspberry Pi configs with a Device Tree
> > (raspberrypi_dt and raspberrypi2), which calls the mkknlimg tool on the
> > resulting zImage kernel, in order to install the Device Tree as
> > described in the board readme file.
> 
> No, it is not "installing" the device tree. It merely appends a marker
> at the end of the kernel image.
> 
> That marker instructs the RPi bootloader that the kernel is Device Tree
> aware, and thus the bootloader will load the device tree blobs; if the
> marker is missing, the bootloader will not load a device tree blob, and
> will pass ATAGS.

Indeed, I misunderstood the statement from the readme file. Depending on
how this patchset goes, I'll add this comment to the post-image script
in a follow-up patch or in a new version.

Thanks for the explanation,
-v


More information about the buildroot mailing list