On Fri, Dec 23, 2022 at 12:47:51PM +1100, Benjamin Herrenschmidt wrote: > This series adds support for MMIO serial ports and auto-configuration > via ACPI SPCR. > > This is necessary for the serial port to work on AWS EC2 "metal" x86 > systems. > > An MMIO serial port can be specified explicitely using the > "mmio," prefix for the --port argument to the 'serial' command, > the register access size can also be specified via a suffix, > and when 'serial' is used without arguments, it will try to use > an ACPI SPCR entry (if any) to add the default port and configure > it appropriately (speed, parity etc...) > > This was tested using SPCR on an actual c5.metal instance, and using > explicit instanciation via serial -p mmioXXXXXXXX on a modified qemu > hacked to create MMIO PCI serial ports and to create a SPCR ACPI table. > > The insipiration was an original implementation by > Matthias Lange ! matthias.lange at kernkonzept.com > However, the code was rewritten pretty much from scratch.
For all the patches Reviewed-by: Daniel Kiper <daniel.ki...@oracle.com>... Thank you for adding this feature! Daniel _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org https://lists.gnu.org/mailman/listinfo/grub-devel
