[OE-core] [oe] "sub" machine types?

[Steffen Sledz]

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Am 04.09.2015 um 09:45 schrieb Nicolas Dechesne:
> On Fri, Sep 4, 2015 at 9:35 AM, Steffen Sledz <sledz at dresearch-fe.de> wrote:
>> We have some products which differ in bootloaders (u-boot) and kernel device trees only. They use the same kernel and root filesystem.
>> 
>> Does OE have concepts for this? Or any suggestions to realize this without building for many machines?
> 
> most BSP layers use SOC_FAMILY, see [1] for this type of things, such that you can create 'SOC' specific packages that are reused across multiple (OE) machines. That sounds like that would help in your situation.
> 
> [1] http://www.yoctoproject.org/docs/1.8/ref-manual/ref-manual.html#var-SOC_FAMILY

I'm not really sure if this is what we need. You suggest to use different MACHINEs of one SOC_FAMILY, Right?

But if I bitbake the root filesystem for each MACHINE an *own* image is created. And not *one* usable for all of them.

What we wish is one image containing one kernel and device tree files for each product.

In addition a u-boot image for each product so that we can use a boot setup running different u-boot images starting the same kernel and root filesystem with different parameters (e.g. for the device trees).

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