Hi,

On Mon, Feb 15, 2016 at 08:50:48PM +0100, Heinrich Schuchardt wrote:

On 02/15/2016 08:40 PM, Aaro Koskinen wrote:

quoted

On Mon, Feb 15, 2016 at 08:21:33PM +0100, Heinrich Schuchardt wrote:

quoted

flash-kernel has a database /usr/share/flash-kernel/db/all.db with
entries like:

Machine: LeMaker Banana Pi
Kernel-Flavors: armmp armmp-lpae
Boot-Script-Path: /boot/boot.scr
DTB-Id: sun7i-a20-bananapi.dtb
U-Boot-Script-Name: bootscr.sunxi
Required-Packages: u-boot-tools

Machine refers to the value of /proc/device-tree/model.
DTB-Id is the dtb to be installed.

So what flash-kernel does is:
- look up value of /proc/device-tree/model
- retrieve correlated dtb file name from database
- install dtb with this name
- create symbolic links for the dtb

If multiple boards use the the same dtb that is fine with flash-kernel
as long as the value of model is unique per dtb.

OCTEON does not work like this. The file you are modifying
(octeon_3xxx.dts) is compiled into the kernel, and there is no external
DTB file. So the model string will be always the same regardless on
which board you have booted the kernel.

you are right DTBs are built in for MIPS systems.

Still it would be useful to be able to use the same property 'model' to
determine which u-boot script (boot.scr) to install.

But that cannot be solved by adding a static model string to
octeon_3xxx.dts, because different OCTEON boards need different u-boot
commands (some boot from flash, some from mmc, some from USB, etc.).

A.
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