Re: Raspberry Pi 4 ethernet support added to -current

[Jared McNeill <jmcneill%invisible.ca@localhost>]

FYI it looks like the next release should have this as a runtime option: 
https://github.com/pftf/edk2-platforms/commit/968451beb7c9302517098abf72f7e42b57a0e024

On Wed, 26 Feb 2020, Jared McNeill wrote:

> You have to build the firmware without ACPI_BASIC_MODE_ENABLE set (see 
> https://github.com/tianocore/edk2-platforms/blob/master/Platform/RaspberryPi/RPi4/Readme.md 
> for details). The 3GB thing is because OSes other than NetBSD don't properly 
> restrict DMA ranges for peripherals.
>
> On Wed, 26 Feb 2020, John Klos wrote:
>
> > Hi, Jared,
> >
> > > Please try it out and let me know if you run into any issues!
> >
> > Ethernet works well so far! However, I see an interesting issue:
> >
> > [     1.000000] total memory = 2971 MB
> > [     1.000000] avail memory = 2876 MB
> >
> > This is in ACPI mode using RPi4_UEFI_Firmware_v1.2.zip. Other than a 
> > missing gigabyte of RAM, it runs very well.
> >
> > Thanks,
> > John