Tag: alinx

4 articles tagged alinx. See all tags or all posts.

These posts form one series: an open bitstream pipeline for the ALINX AX7020, from JTAG bring-up to a REST API. Start at the series page →

ALINX AX7020, Stage 5 Complete: Cold Power-On to a Bitstream API, Nobody Logged In

September 15, 2026 fpga alinx zynq yocto systemd kexec fastapi rest-api linux u-boot qspi nginx embedded bring-up deployment

The open bitstream pipeline for the ALINX AX7020 is finished: power on, the maintenance Linux in QSPI fetches the full image from a company-internal URL, kexecs into it, systemd starts the FastAPI service, and a curl loads a Yosys/nextpnr bitstream into the FPGA. No SD card, no vendor tool, no hand on the board; plus the detours, including a JTAG adapter that quietly powered the flash chip through a power cycle.

ALINX AX7020, Stages 4 & 5: An Open Bitstream Over REST, and the One Missing Line That Hangs Both Cores

September 14, 2026 fpga alinx zynq yosys nextpnr prjxray openxc7 fpga-manager kexec fastapi rest-api yocto linux jtag openocd embedded bring-up

Stages 4 and 5 of the open bitstream pipeline: a Yosys/nextpnr bitstream loaded into the ALINX AX7020 through the kernel's FPGA manager, a kexec updater that finally runs, and a FastAPI service that accepts bitstreams over HTTP, all without a single vendor tool; then the detours, including a PL design that silently drowned both Cortex-A9 cores in FIQs.

ALINX AX7020, Stages 2 & 3: A Yocto Linux in QSPI Flash That Fetches Its Own Updates

August 31, 2026 fpga alinx zynq yocto linux u-boot kexec dropbear fit-image qspi embedded bring-up

Stages 2 and 3 of the open bitstream pipeline: a self-built Yocto Linux for the ALINX AX7020, resident in QSPI flash, discoverable on the company network, key-only SSH: the walkthrough that works, followed by the nine detours it took to get there.

ALINX AX7020 Bring-up: Mainline U-Boot Over JTAG, No FSBL, No Serial Cable

August 30, 2026 fpga alinx zynq jtag openocd u-boot spl device-tree netconsole bring-up linux

Stage 1 of the open bitstream pipeline: putting mainline U-Boot on an ALINX AX7020 over JTAG and Ethernet only: a clean walkthrough of what works, followed by the nine detours it took to find out.