31 lines
1016 B
Markdown
31 lines
1016 B
Markdown
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# Cavium's BDK
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## BDK
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A part of Cavium's BDK can be found in `src/vendorcode/cavium/bdk`.
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It does the **DRAM init** in romstage and the **PCIe**, **QLM**, **SLI**,
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**PHY**, **BGX**, **SATA** init in ramstage.
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## Devicetree
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The BDK does use it's own devicetree, as coreboot's devicetree isn't
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compatible. The devicetree stores key-value pairs (see **bdk-devicetree.h**
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for implementation details), where the key and the value are stored as strings.
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The key-value pairs must be advertised in romstage and ramstage using the
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`bdk_config_set_fdt()` method.
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The tool `util/cavium/devicetree_convert.py` can be used to convert a
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devicetree to a key-value array.
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## Modifications
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* The BDK has been modified to compile under coreboot's toolchain.
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* Removed FDT devicetree support.
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* Dropped files that aren't required for SoC bringup
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* Added Kconfig values for verbose console output
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## Debugging
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You can enable verbose console output in *menuconfig*:
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Go to **Chipset**, **BDK** and enable one or multiple stages.
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