8c88ca0252
Document that only UEFI booting is supported, the current status of Secure Boot, and that the shell and networking are disabled. Signed-off-by: Tim Crawford <tcrawford@system76.com>
28 lines
837 B
Markdown
28 lines
837 B
Markdown
# UEFI
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System76 uses [EDK2](https://github.com/tianocore/edk2) to implement UEFI.
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[coreboot](https://coreboot.org/) is used for Platform Initialization (PI).
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## Booting
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System76 Open Firmware only supports UEFI booting. Legacy BIOS-MBR booting is
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not supported. `\EFI\BOOT\BOOTX64.EFI` must exist on the EFI System Partition
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to be considered valid.
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Network functionality is disabled. Native PXE booting is not supported.
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### Secure Boot
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Secure Boot support is currently disabled.
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The implementation from 9elements is in development. If building a custom
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image, the edk2 config `SECURE_BOOT_ENABLE` can be set to enable support.
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There is currently no firmware UI to view or configure Secure Boot.
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## Shell
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The internal UEFI shell is disabled. A separate binary on a bootable drive
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must be used to access the shell environment.
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