zedboard / xilinx zynq linux drivers for AXI DMA and char devices that are memory-mapped
We share 2 drivers (kernel module) for the Zedboard / Xilinx Zynq 7020:
1- zdma: An AXI-DMA linux driver for simple mode. This useful example driver was not provided by xilinx at time of release. This is used to transfer a large amount of data to/from devices. We tested it to about ~380 MB/s with 32 bit data and cloecked at 100MHz.
2- zchar: A memory-mapped IO for AXI ports, used to send smaller amounts of data, for example to configure hardware devices.
Compatibility: These were tested with: https://github.com/Xilinx/linux-xlnx version: https://github.com/Xilinx/linux-xlnx/commit/3f7c2d54957e950b3a36a251578185bfd374562c
Install:
set this variable (for example in your .cshrc):
export KDIR=~/Desktop/linux-xlnx
Then run make
PS: this is also a full driver for AXI DMA from our group: https://github.com/culurciello/zync-xdma
Enjoy E + eLab