SDM & Configuration Interface - SDM & Configuration Interface Are there any SDM commands that allow uploading a bitstream, similar to the JTAG instruction 0x002 used for configuration? Could you clarify the AVSTx8 (Avalon Streaming x8) programming interface protocol : What is the data format and handshake mechanism? Is it strictly limited to configuration use, or does it allow other use cases? Is it possible to use the SDM pins (AVSTx8 interface) as a high-speed data path from an external host to the HPS? For example, could it be used to transfer a U-Boot image to SPL after HPS boot? Replies: Re: SDM & Configuration Interface Hi sbj Please let me know if you require any further clarification regarding this case. Replies: Re: SDM & Configuration Interface Hi Jingyang, thank you for the quick response. Replies: Re: SDM & Configuration Interface Hi For AVST Programming interface protocol you could find more details under the link below: https://docs.altera.com/r/docs/683673/25.1/agilextm-7-configuration-user-guide/avalon-st-configuration An external host could be used to program the FPGA and HPS configuration only. The Uboot image and rootfs would need to be placed in a storage that could be access once the HPS is brought up. https://docs.altera.com/r/docs/683389/24.3/agilextm-7-soc-fpga-boot-user-guide/external-configuration-host-only?tocId=9tEVMrA4qj2m8MzryMnyuw Regards Jingyang, Teh