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Build FDT directly in emulator and deprecate ROM #90

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2 tasks done
edubart opened this issue Jul 4, 2023 · 0 comments · Fixed by #138
Closed
2 tasks done

Build FDT directly in emulator and deprecate ROM #90

edubart opened this issue Jul 4, 2023 · 0 comments · Fixed by #138
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@edubart
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enhancement New feature or request refactor Restructuring code, while not changing its original functionality
Milestone
v0.16.0

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@edubart
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edubart commented Jul 4, 2023 •
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Context

Currently we maintain a ROM image where its sole goal is to build the FDT (flattened device tree). We could simplify and completely remove the need of a ROM image from the machine by building the FDT in emulator C++ code.

Possible solutions

We can build the FDT using a FDT library in C++ directly on machine boot. We should take precautions to make the FDT deterministic if using an FDT library.

Subtasks

  • Initialize entropy using FDT, make sure the initial entropy becomes a new machine config. This will allow to deprecate the need for rndaddentropy in tools.
  • Make sure FDT is deterministic.
@edubart edubart added the enhancement New feature or request label Jul 4, 2023
@edubart edubart added this to the v0.16.0 milestone Jul 4, 2023
@edubart edubart self-assigned this Jul 4, 2023
@edubart edubart mentioned this issue Jul 4, 2023
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@edubart edubart added the refactor Restructuring code, while not changing its original functionality label Jul 4, 2023
@edubart edubart moved this from Todo to In Progress in Machine Emulator SDK Jul 4, 2023
@edubart edubart mentioned this issue Jul 5, 2023
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@edubart edubart linked a pull request Jul 5, 2023 that will close this issue
Build device tree directly into ROM #94
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@edubart edubart mentioned this issue Jul 25, 2023
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@edubart edubart moved this from In Progress to PR Available in Machine Emulator SDK Aug 14, 2023
@edubart edubart removed a link to a pull request Aug 14, 2023
Build device tree directly into ROM #94
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@edubart edubart linked a pull request Aug 14, 2023 that will close this issue
Replace ROM with DTB, add init and entrypoint configs, use PMEM drives instead of MTD #103
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@edubart edubart removed a link to a pull request Oct 5, 2023
Replace ROM with DTB, add init and entrypoint configs, use PMEM drives instead of MTD #103
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@edubart edubart linked a pull request Oct 5, 2023 that will close this issue
Remove ROM and write devicetree directly to new DTB memory range #138
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@github-project-automation github-project-automation bot moved this from PR Available to Done in Machine Emulator SDK Oct 6, 2023
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@edubart edubart

Labels
enhancement New feature or request refactor Restructuring code, while not changing its original functionality
Projects
Machine Emulator SDK
Status: Done
Milestone
v0.16.0
Development

Successfully merging a pull request may close this issue.

Remove ROM and write devicetree directly to new DTB memory range cartesi/machine-emulator
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@edubart