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When will the SMP of raspberry Pi 4 come true？Or there is some document for the Implementation of SMP？
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- Dominant language
- C
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Description
i tried to make the firmware for raspi 4 , but the smp seems to go wrong， the log is below：
libcpu\arm\cortex-a/start_gcc.S:425: undefined reference to secondary_cpu_c_start'`
it seems there is no code related to SMP for the BSP.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Reproduce the Raspberry Pi 4 firmware build and inspect libcpu/arm/cortex-a/start_gcc.S around line 425, where the undefined reference to secondary_cpu_c_start is reported. Then review the Raspberry Pi 4 BSP for existing SMP-related code or documentation. Done means the SMP implementation or its documented status is clear and the firmware build no longer fails for the reported missing symbol.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c, raspberry-pi
- Domain
- embedded-iot, operating-systems
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100