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nexos wrote:How old is your machine? It might not support GOP and use UGA instead. I think one of my machines has that problem.

rizxt wrote:2012

zaval wrote:try this code:

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/* locating GOP. if we have it, we draw boot screen there */
	Status = pbs->LocateProtocol(&gEfiGopGuid, NULL, &gGop);
	if(Status != EFI_SUCCESS)gGop = NULL;

sorry, I don't use neither gcc nor gnuefi, so you need to translate into that. this function does fill interface pointer for GOP or returns EFI_NOT_FOUND if there is nothing to fill. gEfiGopGuid is the GOP GUID, gGop is a pointer to GOP interface (out parameter).

rizxt wrote:

zaval wrote:try this code:

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/* locating GOP. if we have it, we draw boot screen there */
	Status = pbs->LocateProtocol(&gEfiGopGuid, NULL, &gGop);
	if(Status != EFI_SUCCESS)gGop = NULL;

sorry, I don't use neither gcc nor gnuefi, so you need to translate into that. this function does fill interface pointer for GOP or returns EFI_NOT_FOUND if there is nothing to fill. gEfiGopGuid is the GOP GUID, gGop is a pointer to GOP interface (out parameter).

that still doesn't help because if I don't have a functioning GOP I can't do jack ****. ofc there is the serial port but my pc is the only pc in the house with a serial port.

pout = pSystemTable->ConOut;

// ... and then

pout->OutputString(pout, L"lalalalala");

zaval wrote:

rizxt wrote:

zaval wrote:try this code:

Code: Select all

/* locating GOP. if we have it, we draw boot screen there */
	Status = pbs->LocateProtocol(&gEfiGopGuid, NULL, &gGop);
	if(Status != EFI_SUCCESS)gGop = NULL;

sorry, I don't use neither gcc nor gnuefi, so you need to translate into that. this function does fill interface pointer for GOP or returns EFI_NOT_FOUND if there is nothing to fill. gEfiGopGuid is the GOP GUID, gGop is a pointer to GOP interface (out parameter).

that still doesn't help because if I don't have a functioning GOP I can't do jack ****. ofc there is the serial port but my pc is the only pc in the house with a serial port.

well, if your FW doesn't have GOP, it won't appear magically. there is also ConOut (a combo, collecting SIMPLE_TEXT_OUTPUT_PROTOCOL to various output devices), I don't know why you ignore it and my note about it in yet another thread of yours about UEFI. try using it, it's easier, than GOP, just printing letters onto diplay, my 2011 HP laptop with UEFI does support it fine.

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pout = pSystemTable->ConOut;

// ... and then

pout->OutputString(pout, L"lalalalala");

I mean, ConOut will print to all detected output devices, not only to serial port. you definitely should see your print with it on the screen (if you have done all correctly), because FW definitely will attach this to the display. in fact, you can both OutputString() and BitBlt() to the display (if that's a good idea ).

zaval wrote:you cannot use Boot Services and any protocols after that. you should check for GOP before, take its framebuffer paramateres, if it's present and use them after ExitBootServices(). if your system happened to not have GOP, then
\_(-.-)_/ but, it looks like there is something wrong with your approaches. did you at least check for the GOP presence as in the above example?

rizxt wrote:I need to use GOP or alternative protocols that work after the boot services bite the dust.

rizxt wrote:As a side note, I've been attempting to update my BIOS in hopes that it works. (K01 3.03 -> K01 3.08)

zaval wrote:rixzt, you seem to not understand, that all these things (text I/O prtocols, serial protocol, GOP and actually all protocols) are for the OS Loader and not for the OS. the concept is that after you call ExitBootServices() the FW doesn't own the system anymore and except Runtime Services isn't accessible. for the early stages of the OS initialization, there is video framebuffer, about which you get to know from GOP functions/fields. after your OSL owns the system, you can draw in that framebuffer by yourself. if your computer has diplay and is UEFI compliant (most probably), then it does have GOP. so get it through LocateProtocol() and take the needed information (metrics, address, pixels per scanline). then draw to it. if you cannot get GOP (improbably), then you are unlucky with this machine, try emulators.

for the early stages of the OS initialization, there is video framebuffer, about which you get to know from GOP functions/fields. after your OSL owns the system, you can draw in that framebuffer by yourself.