[lowrisc-dev] Memory-mapped SPI flash on Nexys4?

Jonathan Neuschäfer j.neuschaefer at gmx.net
Wed Jul 20 15:58:31 BST 2016


On Wed, Jul 20, 2016 at 11:27:11AM +0100, Wei Song wrote:
> Hello Jonathan,
> 
> Thanks for the explanation. It seems pretty clear why a memory mapped
> flash is needed now.
> The good news is, I just find out that modern SPI Flash chips do support
> an XIP (execution in place) mode which is dedicated for this purpose and
> the Xilinx Quad SPI IP already support the XIP mode.

Good

> So I think I can add support to this memory mapped flash to lowRISC
> early next month, hopefully you still get time to try?

Yes. The GSoC coding period ends mid-August, and I'll probably keep
working on RISC-V/coreboot after the GSoC.


Jonathan
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