Building for Heterogeneous Systems
summary
Build system shows how to produce Linux plus an RTOS/bare‑metal image in one run using bitbake multiconfig, creating separate cross toolchains (arm‑none‑eabi for bare metal, GNU toolchain for Linux), running artifacts under QEMU, and producing kernel 6.5 plus .bin/.elf/.hex firmware for the small core. The image task of the big‑core config depends on the bare‑metal build via the MC prefix, reuses shared‑state reuse for native pieces, but struggles with separate tmpdirs and combining deploy output for a single product.
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chapters (17)
- 0:00Introduction to heterogeneous systems
- 1:03Why use heterogeneous devices
- 3:53Linux vs bare metal workflows
- 5:20Building bare metal with BitBake
- 7:11Building RTOS applications
- 9:22Handling vendor SDKs
- 10:47Multi-config in BitBake
- 13:59Building specific configurations
- 15:02Testing heterogeneous systems
- 16:05Custom cross tool chains
- 17:10Limitations of multi-config
- 18:58Integrating vendor workflows
- 20:23Q&A on multi-config usage
- 21:32Advanced multi-config syntax
- 22:57Artifacts and final images
- 24:45Challenges in final image generation
- 26:08Closing and Q&A summary
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