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iM 4,1-14,4 EnableGop: Pre-OpenCore GOP support for EFI-era iMacs and Mac Pros
- Thread starter Bmju
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jlnabais
macrumors member
Hello All
I've seen the above post and I've already flashed, in the past ,a Radeon RX 580 following https://forums.macrumors.com/thread...s.2378942/page-25?post=32671327#post-32671327.
However, following same method, I can't see the linux GUI GUI with the Radeon VII I tried all display ports and HDMI. I can boot to MAC OS X Seqoia using OCLP as you can see in the image:
GeekBench and Novabench ran successfully so card is good.
However I updated the Mac OS X and now I can't boot to apply root patches I don't see an image. I'll try to place RX 580 again apply patches and swap the GPUs, but then can I flash it on Mac OS X? I searched and from what read only linux/windows.
Sorry if this is a something I should know by heart, I've searched wuite a bit, but I am not sure what to try next :/
Also on videoProc says I don't have hardware accelaration for h264 and h265 I think that will affect video edditing, is this somethign known? Is there a fix?
jlnabais
macrumors member
Hello I have a Radeon RX 590 Saphire Nitro +
I was following https://forums.macrumors.com/thread...-era-imacs-and-mac-pros.2378942/post-32671327
I've tried it on slot 3 (with RX 580 on slot 1) and I can boot "november rain" grmpl linux but when I do list this happen:
I use the "-ai", but can't get enough information to get to know which of the one on the list of 590 from techpowerup (there are 5 for this model) I can use to flash.
Can someone help me? From previous replies there's people that were able to use RX 590 and from what I can tell RX 590 (device ID 67DF) is supported on MAc OS.
Thanks in advance
I was following https://forums.macrumors.com/thread...-era-imacs-and-mac-pros.2378942/post-32671327
I've tried it on slot 3 (with RX 580 on slot 1) and I can boot "november rain" grmpl linux but when I do list this happen:
I use the "-ai", but can't get enough information to get to know which of the one on the list of 590 from techpowerup (there are 5 for this model) I can use to flash.
Can someone help me? From previous replies there's people that were able to use RX 590 and from what I can tell RX 590 (device ID 67DF) is supported on MAc OS.
Thanks in advance
jlnabais
macrumors member
I could use this method before to flash my RX 580 with eGOP (I only needed to use it alone on PCI 1, no other pci cards or boot drive). With radeon VII I could use a GPU on slot 1 and another on slot 2 and was able to flash a rom with eGOP to my Radeon VII.
Both I could not see the mac os boot menu but would end up booting with OCLP (I haven't applied eGOP on OCLP I am sure).
Radeon RX 590 does not fit on slot 2 with Radeon RX 580 on slot 1 (or vise versa).
Hmmm….
I have followed the steps for installing enableGOP to vBIOS at the last step but am encountering an error at the end of everything whereby I get an error stating UEFIRomExtract can’t be found?!
I have followed the steps from The Mac Elite page for EnableGOP vBIOS… when I download the UEFIRomExtract it is in a zip format that will not unzip… I do find another file that is a .txt format but neither work.
Have I missed anything? Do I need to install Python for this to work?
Mac Pro 5,1
RX580 Sapphire Pulse 8GB
I am doing this because I want to learn a new skill. I have already done a tonne of EnableGOP to system firmwares… I have a lot of Mac Pros still lol
Thank you kindly for your time and help.
I have followed the steps for installing enableGOP to vBIOS at the last step but am encountering an error at the end of everything whereby I get an error stating UEFIRomExtract can’t be found?!
I have followed the steps from The Mac Elite page for EnableGOP vBIOS… when I download the UEFIRomExtract it is in a zip format that will not unzip… I do find another file that is a .txt format but neither work.
Have I missed anything? Do I need to install Python for this to work?
Mac Pro 5,1
RX580 Sapphire Pulse 8GB
I am doing this because I want to learn a new skill. I have already done a tonne of EnableGOP to system firmwares… I have a lot of Mac Pros still lol
Thank you kindly for your time and help.
Hey all, I wanted to thank everyone for all their hard work and contributions.
Can anyone tell me if the firmware replacement for a Radeon VII has any drawbacks in windows? I'll be dual-booting Windows and Mac. Thanks.
Can anyone tell me if the firmware replacement for a Radeon VII has any drawbacks in windows? I'll be dual-booting Windows and Mac. Thanks.
There shouldn't be any drawbacks for Windows, it's just using a better GOP implementation - for effectively the same card, and also from AMD - nothing macOS or OpenCore specific.
Mark1966
macrumors member
Reply to your Post#1,089 with two attached files
With EnableGop_1.4-min i was able to patch the Powercolor Red Dragon 4 Gig RX570 GPU to have a bootscreen with Option key.
With *min2 there was the same error as with EnableGop_1.4.efi from opencore
that says Problem with 128 k limit and patching stopped there.
Thanks
Mark1966
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@Mark1966 also asked (PM) whether it would be a good idea to link to Post #1,089 as a source of smaller files for getting round the AMD size limit. The files in that post are EnableGop version 1.4, but smaller, whereas the recommended small file on p.1 is EnableGop version 1.1. The trouble with using those modified 1.4 versions as the general purpose 'smaller file' is that they are smaller because they disable ForgeUefiSupport. This is to avoid a boot hang with EnableGop on a so far very limited range of hardware (this is the only device reported so far), but it also means the modified driver only supports about half the normal number of GPUs (because about half of GPUs require ForgeUefiSupport), which is the main reason I have kept those versions on the downlow up to now.
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Mark1966
macrumors member
@Ausdauersportler told me that V1.1 of EnableGOP.efi is the smallest one. All later Versions got some bytes bigger, without much things more to force in ROM.
So using V1.1 or *-min out of post #1.089 from #Bmju may do the job without stopping because of 128k limit. Vesion *-min2 out of Post 1,089 gave me also error with 128k limit.
So you may give it a try and maybe it also works for you when trying to insert it in your GPU ROM to have MacOS boot picker.
Good Luck
Mark1966
So using V1.1 or *-min out of post #1.089 from #Bmju may do the job without stopping because of 128k limit. Vesion *-min2 out of Post 1,089 gave me also error with 128k limit.
So you may give it a try and maybe it also works for you when trying to insert it in your GPU ROM to have MacOS boot picker.
Good Luck
Mark1966
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You may also try to shrink the vga bios: In some cases, if you need only a small amount of unused bytes (for example, if the last block is holding only few bytes, but that will reserve a full 0x200 block), you can try to exchange tables with smaller ones.
Mark1966
macrumors member
I believe, however, that most people who seek help here are barely able to manage the vbinsert.sh.
Just the statement that someone can shorten something there, most people won't know what to do with, because they probably don't know exactly how to do it.
For that, there would have to be a precise instruction for it somewhere.
But even then, many will still fail to get it to work.
I already spent a long time trying to get the vbinsert.sh thing to work. For that, I also had to look for help with the path: issue somewhere else. The first result then led to the 128k limit, which meant that nothing had worked yet.
I think that many people will feel the same way when they try to insert EnableGOP.efi into their GPU ROM.
Mark1966
Just the statement that someone can shorten something there, most people won't know what to do with, because they probably don't know exactly how to do it.
For that, there would have to be a precise instruction for it somewhere.
But even then, many will still fail to get it to work.
I already spent a long time trying to get the vbinsert.sh thing to work. For that, I also had to look for help with the path: issue somewhere else. The first result then led to the 128k limit, which meant that nothing had worked yet.
I think that many people will feel the same way when they try to insert EnableGOP.efi into their GPU ROM.
Mark1966
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I'm working on a Mac Pro 5,1 (2x Xeon X5690) and ran into a black-screen issue with EnableGOP1.4 on a Turing-based card. Macschrauber suggested to post the case here...
Setup:
Mainboard ROM with EnableGOP1.4 flashed (reconstructed CK0410DVH2P_144.0.0.0.0 + EnableGOP14)
Test GPU: NVIDIA Quadro RTX 6000 Founders Edition (TU102 reference design, P/N 699-5G150-0510-506E), unmodified factory VBIOS
Production GPU (works fine): AMD RX 6600 XT with MacVidCards Mac-EFI flash
Result:
With the Quadro installed and EnableGOP1.4 active, the system chimes and boots normally (no hang, no hardware fault) — but the display stays black throughout, including at the OpenCore picker stage.
Tried with and without ProvideConsoleGop=false in config.plist — no change in either case.
Reverted to the non-GOP14 ROM, RX 6600 XT works as before (confirms the board itself is fine).
Question:
From what I understand from the thread, EnableGOP should provide pre-boot GOP for a PC GPU with unmodified factory VBIOS (one of the three documented paths to a working picker). The Quadro RTX 6000 should fit that case, but stays black.
Is there a known issue with Turing-generation cards and EnableGOP — e.g. an HII (UEFI 2.3.1) requirement that Apple's EFI 1.10 doesn't satisfy? Or is there a way to test in isolation whether the card can even draw the picker via BootKicker.efi, independent of the rest of the OC config?
Happy to provide more details (board ROM version, full config.plist, etc.) if useful. Thanks for all the work on EnableGOP — it's been essential for getting the RX 6600 XT working 😆👍
Best,
Tobias
Setup:
Mainboard ROM with EnableGOP1.4 flashed (reconstructed CK0410DVH2P_144.0.0.0.0 + EnableGOP14)
Test GPU: NVIDIA Quadro RTX 6000 Founders Edition (TU102 reference design, P/N 699-5G150-0510-506E), unmodified factory VBIOS
Production GPU (works fine): AMD RX 6600 XT with MacVidCards Mac-EFI flash
Result:
With the Quadro installed and EnableGOP1.4 active, the system chimes and boots normally (no hang, no hardware fault) — but the display stays black throughout, including at the OpenCore picker stage.
Tried with and without ProvideConsoleGop=false in config.plist — no change in either case.
Reverted to the non-GOP14 ROM, RX 6600 XT works as before (confirms the board itself is fine).
Question:
From what I understand from the thread, EnableGOP should provide pre-boot GOP for a PC GPU with unmodified factory VBIOS (one of the three documented paths to a working picker). The Quadro RTX 6000 should fit that case, but stays black.
Is there a known issue with Turing-generation cards and EnableGOP — e.g. an HII (UEFI 2.3.1) requirement that Apple's EFI 1.10 doesn't satisfy? Or is there a way to test in isolation whether the card can even draw the picker via BootKicker.efi, independent of the rest of the OC config?
Happy to provide more details (board ROM version, full config.plist, etc.) if useful. Thanks for all the work on EnableGOP — it's been essential for getting the RX 6600 XT working 😆👍
Best,
Tobias
tsialex
Contributor
Nvidia 2xxx cards did not require HII and even worked with pre-boot configuration support from factory.
Did you tried Titan RTX firmware instead? This post have the full procedure to cross-flash the firmware:
cMP 5,1 - diagnose power-on-self-test OR no POST with Nvidia M40 Tesla
Success! In the end, it was easy to get the card running in the cMP 5,1. This thread on LinusTechTips suggests to either flash a Titan X vBIOS (as I did before) OR to flash a Quadro M6000 vBIOS. The later has 2 advantages over the Titan X: The Quadro M6000 also comes in a 24GB variant (as is my...
forums.macrumors.com
VaZ
macrumors 6502
