multiple: surface early boot logs in debug mode#2289
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Add debug and lib parameters to the OVMF-SNP package. When debug = true, the build uses the DEBUG configuration and enables serial port output via -D DEBUG_ON_SERIAL_PORT=TRUE. This is useful for capturing OVMF firmware logs during development and testing. Signed-off-by: Spyros Seimenis <sse@edgeless.systems>
Override OVMF-SNP and OVMF-TDX with debug=true in the debug set. This builds OVMF with DEBUG_ON_SERIAL_PORT=TRUE, producing firmware debug output on the serial port. Combined with use_legacy_serial=true, OVMF output will be captured by kata's console watcher and logged to the journal. Signed-off-by: Spyros Seimenis <sse@edgeless.systems>
Enable legacy serial (ttyS0) when debug mode is active so that kata's console watcher can also capture early OVMF firmware logs. kata's use_legacy_serial option configures qemu to use legacy serial (ttyS0) instead of virtio (hvc0/hvc1) but also configures the guest kernel to use the ttyS0 through the kernel cmdline. Since the kernel command line changes, the SNP launch measurement also changes and so the cmdline in runtime/package.nix needs to also be updated accordingly. Signed-off-by: Spyros Seimenis <sse@edgeless.systems>
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burgerdev
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Apr 1, 2026
katexochen
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| inherit (contrastPkgsFinal) OVMF-SNP; | ||
| inherit (contrastPkgsFinal) OVMF-TDX; |
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is this actually needed? shouldn't it propagate automatically via the fixpoint?
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To achieve this:
OVMF-SNPsimilar to the one that already exists inOVMF-TDX.That way when the debug set is used, information from the early boot will be included in the journal.