Static Partitioning with Xen, LinuxRT, & Zephyr: A Concrete End-to-end Example
Talkat Embedded Linux Conference @ Open Source Summit North America 2022 · on Thursday, 2022-06-23· at 14:55· Room 203/204 (Level 2), JW Marriott Austin, 110 E 2nd Street Austin, TX 78701·
summary
Boots a Xen-based static-partition system on a Xilinx ZCU102 (QEMU used for demo) with three domains: a minimal Linux dom0 (optional), a LinuxRT VM (2 vCPUs, 2 GB) and a 128 MB Zephyr VM, starting all in parallel. Uses partial DTBs for direct device assignment (Ethernet to LinuxRT, TTC timer to Zephyr) and a Loper spec to auto-generate them; uses Xen dom0less, cache coloring (16 colors: Zen 1, dom0 5, Zephyr 1, remainder to LinuxRT) and shared-memory + event channels where Zephyr writes timestamps to SRAM and LinuxRT receives notifications and prints them; PV network interfaces are hot-plugged into guests with xen network attach.
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chapters (14)
- 0:00Start
- 0:23Why Static Partitioning Is Useful
- 3:37Other Features That Are Critical for Static Partitioning
- 4:34Configure the Environment with Three Domains
- 5:43Image Builder
- 8:09Compiling Zen
- 9:06About Linux
- 12:54Demo
- 14:35Generated Bootscript
- 24:06Cache Coloring
- 25:33Colors Allocation
- 28:05Share Memory Event and Event Channels
- 28:29Configuration
- 32:47Pv Drivers
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