Dieter,
On Fri, 2009-06-19 at 17:46 +0200, Dieter Kiermaier wrote:
Hello List,
I want to boot a (Lattice) FPGA from u-boot by using Slave Serial configuration on a Marvell Kirkwood device.
Should be no problem as long as you'll have access to GPIO.
As seen there is an (Xilinx and Altera) FPGA loader driver allready available in u-boot. Please can somebody explain how I have to provide a FPGA bitstream image to u-boot?
The easiest way is to reserve some unused flash sectors and use the first sector's start adress as arg for "fpga load".
It seems I have to create a image with mkimage?
no - Lattice specififc bitstream can be stored in raw format. mkimage may be useful for update, but personally I prefer update via dedicated linux mtd partition.
This image have to be loaded into ram and the address has to be provided to the load command?
Usually an FPGA is *very* board specific. I'd suggest to use flash and create a corresponding mtd partition for linux, i.e. make it maintainable.
Is there a maintainer for the FPGA code inside u-boot? I'm willing to contribute some extensions for Lattice FPGAs if I'm successful!
excellent - all you'll need is the Lattice specific bit toggle sequence.
submitting a proper patch will surely do.
Regards,
André
Thanks to all, Dieter _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
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