uefi/helpers: logger logs to debugcon device #1172
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This modifies the logger so that it also prints to the debugcon device in QEMU respectively the debug-console device in cloud-hypervisor [0]. By default, this device is at I/O port 0xe9. This only works on x86. The major benefit is that one can get log output from the logger set up by uefi::helpers::init even after boot services has been exited. Now the memory map can be logged, for example. When the integration test runs, the output txt file is put into the root directory of the project. Also everyone else developing UEFI apps using uefi-rs and running them in QEMU or cloud-hypervisor (on x86) benefits. [0]: https://phip1611.de/blog/how-to-use-qemus-debugcon-feature/
nicholasbishop
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May 22, 2024
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uefi/helpers: logger logs to debugcon device
This modifies the logger so that it also prints to the debugcon device
in QEMU respectively the debug-console device in cloud-hypervisor [0].
By default, this device is at I/O port 0xe9. This only works on x86.
The major benefit is that one can get log output from the logger set up
by uefi::helpers::init even after boot services has been exited. Now the
memory map can be logged, for example.
When the integration test runs, the output txt file is put into the root
directory of the project.
Also everyone else developing UEFI apps using uefi-rs and running them in
QEMU or cloud-hypervisor (on x86) benefits.
[0] https://phip1611.de/blog/how-to-use-qemus-debugcon-feature/