docs: Add notes about UEFI features
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>
This commit is contained in:
committed by
Tim Crawford
parent
9c63db4c9f
commit
8c88ca0252
27
docs/uefi.md
Normal file
27
docs/uefi.md
Normal file
@@ -0,0 +1,27 @@
|
||||
# UEFI
|
||||
|
||||
System76 uses [EDK2](https://github.com/tianocore/edk2) to implement UEFI.
|
||||
|
||||
[coreboot](https://coreboot.org/) is used for Platform Initialization (PI).
|
||||
|
||||
## Booting
|
||||
|
||||
System76 Open Firmware only supports UEFI booting. Legacy BIOS-MBR booting is
|
||||
not supported. `\EFI\BOOT\BOOTX64.EFI` must exist on the EFI System Partition
|
||||
to be considered valid.
|
||||
|
||||
Network functionality is disabled. Native PXE booting is not supported.
|
||||
|
||||
### Secure Boot
|
||||
|
||||
Secure Boot support is currently disabled.
|
||||
|
||||
The implementation from 9elements is in development. If building a custom
|
||||
image, the edk2 config `SECURE_BOOT_ENABLE` can be set to enable support.
|
||||
|
||||
There is currently no firmware UI to view or configure Secure Boot.
|
||||
|
||||
## Shell
|
||||
|
||||
The internal UEFI shell is disabled. A separate binary on a bootable drive
|
||||
must be used to access the shell environment.
|
Reference in New Issue
Block a user