On Thu, Jan 26, 2012 at 8:52 PM, Ryan Harkin ryan.harkin@linaro.org wrote:
On 26 January 2012 19:34, Scott Bambrough scott.bambrough@linaro.org wrote:
On 12-01-26 01:24 PM, Dave Martin wrote:
On Wed, Jan 25, 2012 at 09:33:35PM +0100, Zygmunt Krynicki wrote:
HI.
I'm building a LAVA service for running fast models. Quite soon (*) we'll be ready to open an alpha access. Right now you will need to bring your own root filesystem and kernel image to use it. With that in mind I wanted to start a discussion about the state of A15 support in Linaro kernel(s). I need to understand two things:
- Are we ready to do automatic builds for A15 kernels?
- If so, which configs and trees should we consider
The basic A15 CPU support is upstream, but no board support.
The board support emulation on the model is for obscure reasons not exactly the same as a real VExpress, but it's pretty close.
With Pawel Moll's VExpress device tree support patches on top of mainline, we can produce a single kernel config and a set of device trees which allow booting on all the A15-based model variants.
About device trees, does the simulator need an explicitly provided device tree (in a way we currently provide the kernel image and ramdisk) or is the dt table built into the image?
I'll be pushing a tree onto git.linaro.org soon with that stuff.
Why don't you push the changes to the ARM LT and let them manage pushing the tree out. Then we can maintain it and take the burden off of you. I suspect you will be rather busy.
Indeed, my tree is already hosting your (dmart's) AMBA Device Discovery fixes and Pawel's Device Tree additions, so placing your A15 model stuff on top is not a problem for me.
Here's our current working tree: http://git.linaro.org/gitweb?p=landing-teams/working/arm/kernel.git%3Ba=summ...
This is already booting real A15 Versatile Express hardware, so we're part the way there already.
R.
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