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GOP Boot Screens part II(Clover)
- Thread starter DearthnVader
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Nick, I did a quick and dirty test with QEMU and OVMF( UEFI ), I passed the VM the rom for PCI Passthrough of the RX580, the drivers load, but they never link to the device.
iMacEG2 GOP ROM:
Code:
99 00000010 ? - - - - <null string> Offset(0xE800,0x147FF)
9A 00000010 ? - - - - <null string> Offset(0xE800,0x147FF)
9B 00000010 ? - - - - <null string> Offset(0xE800,0x147FF)
9C 001003A3 ? - - - - AMD Radeon Driver 01.00.931Modded GOP rom:
Code:
98 001003A3 ? - - - - AMD Radeon Driver 01.00.931 Offset(0xE800,0x1DDFF)I've yet to test it in my 3,1, but I don't assume the results will be much deferent, other than the iMac EG2 won't work on the 3,1.
The GOP driver just doesn't want to link to my 580.
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![Nick [D]vB](/data/avatars/m/1132/1132239.jpg?1552018909){kind=avatar}
Interesting, I guess the MP6,1 version gives similar output? I wouldn't expect QEMU to load the CoreEG2, but I suspect it's required to load the GOP as with the M380 and 780M roms I tested. The 18,3 GOP GUID is 7853E756-CA34-4296-90BB-DEDC91BD64B6, there are actually two GOPs but the other one is Polaris 21 / Baffin.
I'm also not sure about loading EG2 from the vbios, that only seems to work on some cards, not sure why yet. I'm not doing anything particularly clever there, just re-compressing it, clearing the last rom indicator and wedging it in-between the vbios and GOP. I actually managed to insert the NVME driver like that but had no way of testing it on the 2011 iMac.
I'm also not sure about loading EG2 from the vbios, that only seems to work on some cards, not sure why yet. I'm not doing anything particularly clever there, just re-compressing it, clearing the last rom indicator and wedging it in-between the vbios and GOP. I actually managed to insert the NVME driver like that but had no way of testing it on the 2011 iMac.
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Really interesting stuff, the 6,1 EG2+GOP was the same result as the iMac EG2+GOP.
Maybe the EG2 drivers needs something else to link correctly. I'd be interested in the output of the drivers command on any Mac that the EG2 drivers load on.
Seems this could be used to get boot screens on Radeon RX cards with EGPU, but we really want boot screens for the 4,1/5,1 using Radeon RX cards. Each little bit helps, and it seems Apple must have at least some awareness of us FW hackers, as they put an NVME driver in the latest FW for the 5,1, only after someone figured out how to do it themselves.
Maybe, just maybe, Apple will enable boot screens for the RX580 they have been recommending to 5,1 users, as they really don't want us mucking about in the FW, and I assume they get a lot of complaints about the lack of BS. Most people just see Apple is recommending the RX 580, and they assume it will work 100%.
I don't know if anyone at Apple is keeping tabs on FW hacks, but it seems as if they are.
Might be worth trying to load the decompressed MP6,1 CoreEG2.efi from the console, or injecting into the bootrom if you can do hardware level recovery. I'm away from home at the moment but will try and post ioreg / driver dumps from the M380 card when I get back.
Hoping to get hold of a Vega56 soon to test with the iMacPro GOP, also very curious to know how Nvidia are getting bootscreens on Turing cards?? I'm sure Apple are keeping an eye on things, the current situation for MP owners is pretty ridiculous, but at least you didn't get obsoleted like all those poor iMacs!
Hoping to get hold of a Vega56 soon to test with the iMacPro GOP, also very curious to know how Nvidia are getting bootscreens on Turing cards?? I'm sure Apple are keeping an eye on things, the current situation for MP owners is pretty ridiculous, but at least you didn't get obsoleted like all those poor iMacs!
Yes, the loadpcirom command from the shell does exactly what it sounds like it does. Then you might want to issue the connect command.
It initializes the driver, there are lots of other useful commands, -devices etc:
https://www.uefi.org/sites/default/files/resources/UEFI_Shell_Spec_2_0_Errata_A.pdf
Have you been able to recover the 580 yet? Feeling a bit guilty about that so let me know if I can help.
I think so. I doubt the MP6,1 version would brick it again but I'd test that while you still have the PC open.
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All r
All right. All good now. The PC boots perfectly with the ROM which locked the Mac. I flashed the Ellesmere_IM183GOP_MP61EG2.rom. It boots OK in the PC and the Mac. Still no boot screens without Refind yet.
What about boot screens with refind? That would be a major improvement for the 5,1...
Great! Did you try different DisplayPort outputs? It would be good to know if the GOP is actually being loaded, can you post a screenshot of system profiler, the UEFI shell drivers / device list, and maybe an ioreg dump. Thanks.
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Drivers load:
No boot screen in refind
[doublepost=1542772588][/doublepost]
I wonder what this configuration option does in refind?
Code:
T D
D Y C I
R P F A
V VERSION E G G #D #C DRIVER NAME IMAGE NAME
== ======== = = = == == =================================== ===================
47 00000001 D - - 1 - ICH Serial ATA Controller Initializ BB65942B-521F-4EC3
A3 00000010 D - - 1 - PCI AHCI Driver 95AF7E4D-C45D-47FF
A4 00000010 ? - - - - PCI NVMe Driver 51116915-C34B-4D8E
A6 00000010 D - - 1 - PCI ATA/ATAPI Bus Driver 69FD8E47-A161-4550
A9 00000010 B - - 1 71 PCI Bus Driver 93B80004-9FB3-11D4
AB 00000010 ? - - - - ISA Bus Driver 240612B5-A063-11D4
AC 00000010 ? - - - - ISA Serial Driver 93B80003-9FB3-11D4
AE 0000000A D - - 2 - Simple Network Protocol Driver A2F436EA-A127-4EF8
AF 00000010 D - - 4 - Apple Net Load File Driver A3F436EA-A127-4EF8
B0 00000010 D - - 2 - Apple NetServices Protocol Driver 7A5CFD97-8F27-458A
B2 03050300 B X X 2 2 Intel(R) PRO/1000 3.5.03 EFI-x6 A1F436EA-A127-4EF8
B3 00000011 D - - 2 - USB EHCI Driver BDFE430E-8F2A-4DB0
B5 00000010 D - - 6 - Usb Uhci Driver 2FB92EFA-2EE0-4BAE
B6 00000011 B - - 8 17 USB Bus Driver 240612B7-A063-11D4
B7 00000010 D - - 1 - Usb Bot Mass Storage Driver B40612B9-A063-11D4
B8 00000010 ? - - - - Usb Cbi0 Mass Storage Driver A3527D16-E6CC-42F5
B9 00000010 ? - - - - <UNKNOWN> B40612B2-A063-11D4
BA 00000010 D - - 1 - Generic USB Mass Storage Driver A5C6D68B-E78A-4426
BB 00000010 D - - 2 - Usb Keyboard Driver 2D2E62CF-9ECF-43B7
BC 00000010 D - - 2 - Usb Mouse Driver 2D2E62AA-9ECF-43B7
BD 00000010 D - - 1 - Apple HID Interface Driver 07B37006-9302-408E
BF 00000010 ? - - - - APFS Jump Start Driver CFFB32F4-C2A8-48BB
C0 00000010 D - - 5 - HFS File System Driver 4CF484CD-135F-4FDC
C6 00000010 D - - 1 - Platform Console Management Driver 51CCF399-4FDF-4E55
C7 00000010 D - - 2 - Platform Console Management Driver 51CCF399-4FDF-4E55
C8 00000010 B - - 2 2 Console Splitter Driver 408EDCEC-CF6D-477C
C9 00000010 B - - 2 2 Console Splitter Driver 408EDCEC-CF6D-477C
CA 00000010 B - - 1 1 Console Splitter Driver 408EDCEC-CF6D-477C
CB 00000010 ? - - - - Console Splitter Driver 408EDCEC-CF6D-477C
CF 00000010 D - - 1 - UGA Console Driver CCCB0C28-4B24-11D5
D0 00000010 ? - - - - Serial Terminal Driver 9E863906-A40F-4875
D1 00000010 D - - 25 - Generic Disk I/O Driver CA261A26-7718-4B9B
D2 00000010 D - - 6 - FAT File System Driver 5058F21C-BC34-11D4
D3 00000010 B - - 6 18 Partition Driver 43B93232-AFBE-11D4
E6 02084201 ? X X - - ASiX USB ethernet driver D81D1706-BE6F-4734
E7 00000010 D - - 1 - FireWire Ohci Driver 0412A7A1-C050-42C2
E9 00000010 ? - - - - FireWire Device Driver 6074610C-93C6-4A50
EA 00000010 D - - 1 - <UNKNOWN> BCCAD460-4F7D-4E51
FB 00000010 D - - 1 - AGP Driver 8A107CC5-DCDA-4FB7
103 00000010 B - - 1 1 Asmedia 2106 Sata Controller Driver
104 00000010 B - - 1 1 Asmedia 2106 Sata Controller Driver
106 00000010 ? - - - - <UNKNOWN>
107 00000010 ? - - - - <UNKNOWN>
108 00000010 ? - - - - <UNKNOWN>
109 00000D3A B - - 1 5 NVIDIA GPU Driver
10A 00000D3A ? - - - - NVIDIA GPU DriverNo boot screen in refind
[doublepost=1542772588][/doublepost]
Code:
# Tell a Mac's EFI that macOS is about to be launched, even when it's not.
# This option causes some Macs to initialize their hardware differently than
# when a third-party OS is launched normally. In some cases (particularly on
# Macs with multiple video cards), using this option can cause hardware to
# work that would not otherwise work. On the other hand, using this option
# when it is not necessary can cause hardware (such as keyboards and mice) to
# become inaccessible. Therefore, you should not enable this option if your
# non-Apple OSes work correctly; enable it only if you have problems with
# some hardware devices. When needed, a value of "10.9" usually works, but
# you can experiment with other values. This feature has no effect on
# non-Apple computers.
# The default is inactive (no macOS spoofing is done).
#
#spoof_osx_version 10.9I wonder what this configuration option does in refind?
No AMD GOP driver is loaded.
Did you try the custom version of rEFInd from the other thread?
Won't work anyway, without a GOP driver loaded.
It would be worth trying without the GT120 card, on the iMac I tested UGA or GOP but not both at the same time. Not sure it's worth injecting CoreEG2 into the bootrom, if it wasn't loading from vbios then the 18,3 version wouldn't have bricked the card.
It would be good if someone could try the 18,3 GOP on a MP6,1 with a RX580 EGPU, to help pin down why the GOP isn't loading here, the chip family and device ID match and normally that's enough. It may be possible to patch the GOP to load without CoreEG2, but I guess you'd have to start playing with the PCI BARs etc??
I will post dumps from my iMac 2011 system with the M380 when I get home, architecturally it must be that little bit closer to the MP6,1 and so able to load its CoreEG2. Well, it was worth a shot guys, but probably just flash the original vbios back for the moment.
It would be good if someone could try the 18,3 GOP on a MP6,1 with a RX580 EGPU, to help pin down why the GOP isn't loading here, the chip family and device ID match and normally that's enough. It may be possible to patch the GOP to load without CoreEG2, but I guess you'd have to start playing with the PCI BARs etc??
I will post dumps from my iMac 2011 system with the M380 when I get home, architecturally it must be that little bit closer to the MP6,1 and so able to load its CoreEG2. Well, it was worth a shot guys, but probably just flash the original vbios back for the moment.
I tried with a single RX580 too. Of course I can't see anything but I know refind boots and times out than log's in
Something I've noted, but I'm not sure what it means, maybe someone else can decode this info:
RX580 MP3,1 at boot to a shell, with no code for GOP screens:
Issue the connect command from the shell with no display connected to the RX580:
Connect a display to the RX580 and reissue the connect command:
See what I am driving at here( X 1 vs 1 vs 1 1 )
For some reason, the dumps I've seen from the 5,1 when only booted to a shell have 1 1:
I assume if you boot a 5,1 with an RX card and no display connected, you would see the same thing I did 1:
I assume that the reason we can't get boot screens on the 5,1 with our custom boot loader code has something to do with the state of the AMD driver 3,1 ( X 1 ) 5,1 ( 1 1 ).
It seems to be already in the state our custom code is trying to init.
It would help if we knew what #C means as well a X @ DIAG?
RX580 MP3,1 at boot to a shell, with no code for GOP screens:
Code:
B8 00000010 D - - 2 - AGP Driver 8A107CC5-DCDA-4FB7
D4 0010013E D - - 1 - ATI Radeon UGA Driver 01.00.318
D5 00013E00 D - X 1 - AMD GOP X64 Release Driver Rev.1.62Issue the connect command from the shell with no display connected to the RX580:
Code:
B8 00000010 D - - 2 - AGP Driver 8A107CC5-DCDA-4FB7
D4 0010013E D - - 1 - ATI Radeon UGA Driver 01.00.318
D5 00013E00 D - - 1 - AMD GOP X64 Release Driver Rev.1.62Connect a display to the RX580 and reissue the connect command:
Code:
B8 00000010 D - - 2 - AGP Driver 8A107CC5-DCDA-4FB7
D4 0010013E D - - 1 - ATI Radeon UGA Driver 01.00.318
D5 00013E00 B - - 1 1 AMD GOP X64 Release Driver Rev.1.62See what I am driving at here( X 1 vs 1 vs 1 1 )
For some reason, the dumps I've seen from the 5,1 when only booted to a shell have 1 1:
Code:
T D
D Y C I
R P F A
V VERSION E G G #D #C DRIVER NAME IMAGE NAME
== ======== = = = == == =================================== ===================
D5 00013E00 B - - 1 1 AMD GOP X64 Release Driver Rev.1.62I assume if you boot a 5,1 with an RX card and no display connected, you would see the same thing I did 1:
Code:
D5 00013E00 D - - 1 - AMD GOP X64 Release Driver Rev.1.62I assume that the reason we can't get boot screens on the 5,1 with our custom boot loader code has something to do with the state of the AMD driver 3,1 ( X 1 ) 5,1 ( 1 1 ).
It seems to be already in the state our custom code is trying to init.
It would help if we knew what #C means as well a X @ DIAG?
Mactel is a blessing utility for Linux:
https://wiki.ubuntu.com/MactelSupportTeam/CommunityHelpPages#Mactel Wiki Support Matrix
What is strange there in the Mactel Wiki Support Matrix
There is no Mac 5.1. It is skipped as it has never existed...
https://wiki.ubuntu.com/MactelSupportTeam/CommunityHelpPages#Mactel Wiki Support Matrix
What is strange there in the Mactel Wiki Support Matrix
There is no Mac 5.1. It is skipped as it has never existed...
This site
https://blog.greggant.com/posts/2018/05/07/definitive-mac-pro-upgrade-guide.html#gpuupgrades
claims that
Is flashable for a boot screen. Does anybody know how?
https://blog.greggant.com/posts/2018/05/07/definitive-mac-pro-upgrade-guide.html#gpuupgrades
claims that
Is flashable for a boot screen. Does anybody know how?
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Should be via the same Netkas script.
W7000 is GCN 1st Gen GPU (Pitcairn XT GL), same family as the HD7950.
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W7000 = HD7870.
HD7950 EFI works, but you lost HDMI and the card is not working correctly with Mojave. Back in the day some people here made a correct personality for the card, but it's not public.
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