[meta-xilinx] Loading FPGA bit streams

[Nathan Rossi]

On Mon, Jun 8, 2015 at 6:56 PM, SMITH Peter T <peter.t.smith at alstom.com> wrote:
> Stephen,
>
>
>
> I thought that the xdevcfg driver was not part of the meta-xilinx Yocto
> build and that the community was working towards a generic fpga_manager (or
> something like that) solution.

The 'xdevcfg' driver is only found in the linux-xlnx kernel. Currently
in meta-xilinx the linux-xlnx kernel is used by default for the Zynq
machines, this default is infact due in part to the fpga_manger and or
any driver not being available in mainline/yocto kernels yet.

Also to add to Mike's comment about delayed loading/probing, device
tree overlays might be useful as well (especially for
re-configuration).

Regards,
Nathan

>
>
>
> I will investigate further.
>
>
>
> Thanks.
>
>
>
> Peter
>
>
>
> From: Stephen Mossom [mailto:stephen.mossom at calnexsol.com]
> Sent: 08 June 2015 09:54
> To: SMITH Peter T
> Subject: RE: Loading FPGA bit streams
>
>
>
> Hi Peter,
>
>
>
> You can load Zynq FPGA bitstreams from Linux user space using Xilinx’s
> xdevcfg driver.
>
>
>
> Stephen
>
>
>
> From: meta-xilinx-bounces at yoctoproject.org
> [mailto:meta-xilinx-bounces at yoctoproject.org] On Behalf Of SMITH Peter T
> Sent: 08 June 2015 09:47
> To: meta-xilinx at yoctoproject.org
> Subject: [meta-xilinx] Loading FPGA bit streams
>
>
>
> Hi,
>
>
>
> General question this from somebody just starting out with a Zynq/Yocto
> setup. What are the options for loading FPGA bit streams? I think it can be
> done from the u-boot SPL and u-boot itself but what about from Linux user
> space? Thanks, any input gratefully received?
>
>
>
> Peter
>
>
>
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