riscv-software-src / riscv-software-src/opensbi
Rebar support
Open
Nobody has claimed this yet.
- Dominant language
- C
- Stars
- 1.5k
- Forks
- 712
- PR merge metrics
- No merged PRs in 30d
Description
Add functionality to enable and disable support for resizable base address register (rebar) for PCIe accelerators (gpu). The linux kernel relies on the BIOS to negotiate rebar. This project claims to have a generic UEFI DXE driver with this functionality.
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
Start by comparing the requested PCIe ReBAR behavior with the linked ReBarUEFI generic UEFI DXE driver and the Linux kernel's BIOS negotiation assumptions. Define how OpenSBI would expose enable and disable support for PCIe accelerators, and what hardware or firmware behavior would demonstrate that the work is complete.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c, linux
- Domain
- operating-systems
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100