Recovery #4
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Recovery #4
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added 2 commits
May 17, 2022 11:54
MacOS VMs emit their debug log to a PL011 serial port, not the virtio-console one that we spawn with --serial. This is important if you want to see kernel debug output. Let's add an option to turn on the pl011 console as well. For now, it can only be attached to stdin/stdout. Signed-off-by: Alexander Graf <graf@amazon.com>
When running macOS VMs, there are a few hidden options one can pass. The most important ones are --recovery to force the VM into RecoveryOS and --dfu to force it into DFU mode for recovery using Apple Configurator. This patch adds both options as parameters when launching a VM. Signed-off-by: Alexander Graf <graf@amazon.com>
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As nice as those features would be, it seems that Ventura has blocked those :( - on macOS 13 the VM will fail to start if PL011 is enabled with: so I'll keep it open since I like the idea, but sadly private APIs don't seem to last long. |
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Nov 9, 2022
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They look different on Ventura, with recovery becoming a first class citizen. I have an updated branch at https://github.com/agraf/macosvm/tree/macos13 that enables it there. Let's close this PR, I'll add it the official way later :) |
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Virtualization.Framework has a few private APIs that can come handy when debugging issues: A PL011 emulator so you can get iBoot & kernel debug output and forcing parameters to get the VM to boot in RecoveryOS or DFU mode.
This PR adds support for all 3 of them: The PL011 configuration can be stored permanently as part of the vm config. Recovery and DFU are only command line switches, because they will only be useful during manual recovery.