Hello, On Sun, Oct 18, 2020 at 09:40:00PM +1100, Anthony Davies wrote: > Hi All, > > I am having an issue where it seems after u-boot has booted an EFI it > doesnt seem to "release" the serial console input. > > I have had this happen using the iPXE efi similar to > https://lists.denx.de/pipermail/u-boot/2018-April/324802.html and also when > using the grub efi. In grub efi the console works for me but there is no single 'grub' - each distribution adds a number of patches on top.
Also I would expect that grub and iPXE running as EFI binary would use console through EFI calls and then u-boot should not 'release' the console - it should continue to provide the EFI service to grub and iPXE. There is an option to include a boot script in iPXE. If that is preserved when built as EFI binary you can test other iPXE features without typing on the console. Thanks Michal