Re: GOP Console Driver

[Andrew Fish <afish@apple.com>]

JD,

Glad to see you are getting use out of your 10 year old Mac. Here are the supported graphics cards: https://support.apple.com/en-gb/HT201805 <https://support.apple.com/en-gb/HT201805>

The EFI on your Mac Pro3,1 requires a Mac Edition card. Some of those cards had an EFI Firmware Switch to change the ROM mode. 

Mac Pro 2010 is the oldest Mac that is still supported: https://support.apple.com/macos/mojave <https://support.apple.com/macos/mojave>.  

The Mac Edition cards produce an API that is lower level than UGA or GOP so that all the policy can be driven Mac and not the video card. 

Thanks,

Andrew Fish

> On Aug 19, 2018, at 4:34 AM, Jd Lyons <lyons_dj@yahoo.com> wrote:
> 
> 
> 
>> Begin forwarded message:
>> 
>> From: Jd Lyons <lyons_dj@yahoo.com>
>> Subject: GOP Console Driver
>> Date: August 18, 2018 at 11:31:50 PM EDT
>> To: edk2-devel@lists.01.org
>> 
>> I’ve been trying to hack together GOP support for Apples EFI 1.1 on my Mac Pro3,1. Apple uses a somewhat mix of EFI 1.x and UEFi2.x.
>> 
>> I’m able to get the GOP rom for my graphics card to load and link to the device, Apple’s firmware takes care of that much, and I have some custom code for rEFInd boot loader that makes the graphics card work in graphics mode. However I can’t get back to a shell nor can I boot Windows or the Mac OS in this mode.
>> 
>> I think the trouble with booting the macOS is Apple’s boot.efi can’t get the console, Apple has a UGA Console driver but no GOP Console driver in my firmware. I tried extracting the Graphics Console Driver from OVMF and it does load, but doesn’t link to any devices, even when I try to connect it with my device handle, I.E.
>> 
>> connect DA 129
>> 
>> Returns success, but invoking drivers shows the Graphics Console Driver is still not linked to any devices.
>> 
>> Can anyone point me in the right direction on how to get a proper GOP Console Driver?
>> 
>> Thanks,
>> JD
> 
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