278 lines
10 KiB
C
278 lines
10 KiB
C
/**
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* PROJECT: ExectOS
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* COPYRIGHT: See COPYING.md in the top level directory
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* FILE: xtldr/modules/framebuf/framebuf.c
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* DESCRIPTION: Boot loader framebuffer support
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* DEVELOPERS: Rafal Kupiec <belliash@codingworkshop.eu.org>
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*/
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#include <framebuf.h>
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/* EFI Image Handle */
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EFI_HANDLE EfiImageHandle;
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/* EFI System Table */
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PEFI_SYSTEM_TABLE EfiSystemTable;
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/* EFI XT Loader Protocol */
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PXT_BOOT_LOADER_PROTOCOL XtLdrProtocol;
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/* XT FrameBuffer Information */
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XT_FRAMEBUFFER_INFORMATION FrameBufferInfo;
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/* XT FrameBuffer Protocol */
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XT_FRAMEBUFFER_PROTOCOL XtFramebufferProtocol;
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/**
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* Provides a current FrameBuffer driver name.
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*
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* @param DriverName
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* Supplies a pointer to the memory area where FB driver name will be stored.
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*
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* @return This routine does not return any value.
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*
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* @since XT 1.0
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*/
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XTCDECL
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VOID
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FbGetDisplayDriver(OUT PWCHAR *DriverName)
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{
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switch(FrameBufferInfo.Protocol)
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{
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case GOP:
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*DriverName = L"GOP";
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break;
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case UGA:
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*DriverName = L"UGA";
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break;
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default:
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*DriverName = L"NONE";
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break;
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}
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}
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/**
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* Returns information about frame buffer in XTOS compatible format.
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*
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* @param InformationBlock
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* A pointer to memory area containing XT structure where all the information will be stored.
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*
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* @return This routine does not return any value.
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*
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* @since XT 1.0
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*/
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XTCDECL
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VOID
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FbGetDisplayInformation(OUT PLOADER_GRAPHICS_INFORMATION_BLOCK InformationBlock)
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{
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InformationBlock->Initialized = FrameBufferInfo.Initialized;
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InformationBlock->Protocol = FrameBufferInfo.Protocol;
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InformationBlock->Address = (PVOID)(ULONG_PTR)FrameBufferInfo.FrameBufferBase;
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InformationBlock->BufferSize = FrameBufferInfo.FrameBufferSize;
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InformationBlock->Width = FrameBufferInfo.HorizontalResolution;
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InformationBlock->Height = FrameBufferInfo.VerticalResolution;
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InformationBlock->BitsPerPixel = FrameBufferInfo.BitsPerPixel;
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InformationBlock->PixelsPerScanLine = FrameBufferInfo.PixelsPerScanLine;
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InformationBlock->Pitch = FrameBufferInfo.Pitch;
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}
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/**
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* Initializes FrameBuffer device on GOP and UGA compatible adapters.
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*
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* @return This routine returns a status code.
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*
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* @since XT 1.0
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*/
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XTCDECL
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EFI_STATUS
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FbInitializeDisplay()
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{
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EFI_GUID GopGuid = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID;
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EFI_GUID UgaGuid = EFI_UNIVERSAL_GRAPHICS_ADAPTER_PROTOCOL_GUID;
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UINT32 Parameter1, Parameter2;
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EFI_STATUS Status;
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/* Check if framebuffer already initialized */
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if(!FrameBufferInfo.Initialized)
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{
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/* Initialize framebuffer */
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XtLdrProtocol->DbgPrint(L"Initializing framebuffer device\n");
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FrameBufferInfo.Protocol = NONE;
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FrameBufferInfo.Initialized = FALSE;
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/* Check if GOP already in use */
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Status = EfiSystemTable->BootServices->HandleProtocol(EfiSystemTable->ConsoleOutHandle, &GopGuid,
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(PVOID*)&FrameBufferInfo.Adapter.GOP);
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if(Status != STATUS_EFI_SUCCESS)
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{
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/* Locate GOP protocol */
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Status = EfiSystemTable->BootServices->LocateProtocol(&GopGuid, NULL, (PVOID *)&FrameBufferInfo.Adapter.GOP);
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}
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/* Check if Graphics Output Protocol is available */
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if(Status == STATUS_EFI_SUCCESS)
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{
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/* Found GOP */
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XtLdrProtocol->DbgPrint(L"Found GOP compatible display adapter\n");
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/* Set framebuffer parameters */
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FrameBufferInfo.HorizontalResolution = FrameBufferInfo.Adapter.GOP->Mode->Info->HorizontalResolution;
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FrameBufferInfo.VerticalResolution = FrameBufferInfo.Adapter.GOP->Mode->Info->VerticalResolution;
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FrameBufferInfo.BitsPerPixel = GoppGetBitsPerPixel();
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FrameBufferInfo.BytesPerPixel = FrameBufferInfo.BitsPerPixel >> 3;
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FrameBufferInfo.PixelsPerScanLine = FrameBufferInfo.Adapter.GOP->Mode->Info->PixelsPerScanLine;
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FrameBufferInfo.PixelFormat = FrameBufferInfo.Adapter.GOP->Mode->Info->PixelFormat;
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FrameBufferInfo.Pitch = FrameBufferInfo.PixelsPerScanLine * (FrameBufferInfo.BitsPerPixel / 8);
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FrameBufferInfo.FrameBufferBase = FrameBufferInfo.Adapter.GOP->Mode->FrameBufferBase;
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FrameBufferInfo.FrameBufferSize = FrameBufferInfo.Adapter.GOP->Mode->FrameBufferSize;
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FrameBufferInfo.Protocol = GOP;
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FrameBufferInfo.Initialized = TRUE;
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}
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else
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{
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/* GOP is unavailable */
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FrameBufferInfo.Adapter.GOP = NULL;
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/* Check if UGA already in use */
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Status = EfiSystemTable->BootServices->HandleProtocol(EfiSystemTable->ConsoleOutHandle, &UgaGuid,
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(PVOID*)&FrameBufferInfo.Adapter.UGA);
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if(Status != STATUS_EFI_SUCCESS)
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{
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/* Locate UGA protocol */
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Status = EfiSystemTable->BootServices->LocateProtocol(&UgaGuid, NULL,
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(PVOID*)&FrameBufferInfo.Adapter.UGA);
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}
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/* Check if Universal Graphics Adapter is available */
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if(Status == STATUS_EFI_SUCCESS)
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{
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/* Found UGA */
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XtLdrProtocol->DbgPrint(L"Found UGA compatible display adapter\n");
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/* Get current mode */
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Status = FrameBufferInfo.Adapter.UGA->GetMode(FrameBufferInfo.Adapter.UGA,
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&FrameBufferInfo.HorizontalResolution,
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&FrameBufferInfo.VerticalResolution,
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&Parameter1, &Parameter2);
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if(Status != STATUS_EFI_SUCCESS)
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{
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/* Unable to get current UGA mode */
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XtLdrProtocol->DbgPrint(L"Failed to get current UGA mode (Status code: %lx)\n", Status);
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FrameBufferInfo.Adapter.UGA = NULL;
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}
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else
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{
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/* Set framebuffer parameters */
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FrameBufferInfo.BitsPerPixel = 32;
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FrameBufferInfo.BytesPerPixel = 4;
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FrameBufferInfo.PixelsPerScanLine = FrameBufferInfo.HorizontalResolution;
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FrameBufferInfo.PixelFormat = PixelBlueGreenRedReserved8BitPerColor;
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FrameBufferInfo.Pitch = FrameBufferInfo.PixelsPerScanLine * (FrameBufferInfo.BitsPerPixel / 8);
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FrameBufferInfo.FrameBufferBase = 0;
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FrameBufferInfo.FrameBufferSize = FrameBufferInfo.HorizontalResolution *
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FrameBufferInfo.VerticalResolution *
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FrameBufferInfo.BytesPerPixel + 1024;
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FrameBufferInfo.Protocol = UGA;
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/* Temporarily set this to FALSE, as we don't set FB base and we cannot use it anyway */
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FrameBufferInfo.Initialized = FALSE;
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}
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}
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}
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/* Make sure framebuffer initialized properly */
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if(!FrameBufferInfo.Initialized)
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{
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/* GOP and UGA unavailable */
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XtLdrProtocol->DbgPrint(L"No display adapter found\n");
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return STATUS_EFI_NOT_FOUND;
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}
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}
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/* Return success */
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return STATUS_SUCCESS;
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}
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/**
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* Prints important information about framebuffer.
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*
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* @return This routine does not return any value.
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*
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* @since XT 1.0
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*/
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XTCDECL
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VOID
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FbPrintDisplayInformation()
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{
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PWCHAR DriverName;
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/* Make sure frame buffer is initialized */
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if(!FrameBufferInfo.Initialized)
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{
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/* No FrameBuffer */
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XtLdrProtocol->DbgPrint(L"No display adapters initialized, unable to print video information\n");
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return;
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}
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/* Get display driver name */
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FbGetDisplayDriver(&DriverName);
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/* Print video information */
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XtLdrProtocol->DbgPrint(L"XTLDR Framebuffer information:\n"
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L" FrameBuffer Address: 0x%lx\n"
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L" FrameBuffer Size: %lu\n"
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L" FrameBuffer Driver: %S\n"
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L" Current Resolution: %ux%ux%u\n"
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L" Pixel Format: %u\n"
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L" Pixels Per ScanLine: %u\n",
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FrameBufferInfo.FrameBufferBase, FrameBufferInfo.FrameBufferSize, DriverName,
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FrameBufferInfo.HorizontalResolution, FrameBufferInfo.VerticalResolution,
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FrameBufferInfo.BitsPerPixel, FrameBufferInfo.PixelFormat,
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FrameBufferInfo.PixelsPerScanLine);
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}
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/**
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* This routine is the entry point of the XT EFI boot loader module.
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*
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* @param ImageHandle
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* Firmware-allocated handle that identifies the image.
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*
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* @param SystemTable
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* Provides the EFI system table.
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*
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* @return This routine returns status code.
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*
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* @since XT 1.0
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*/
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XTCDECL
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EFI_STATUS
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BlXtLdrModuleMain(IN EFI_HANDLE ImageHandle,
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IN PEFI_SYSTEM_TABLE SystemTable)
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{
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EFI_GUID Guid = XT_FRAMEBUFFER_PROTOCOL_GUID;
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EFI_HANDLE Handle = NULL;
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EFI_STATUS Status;
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/* Set the system table and image handle */
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EfiImageHandle = ImageHandle;
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EfiSystemTable = SystemTable;
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/* Open the XTLDR protocol */
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Status = BlGetXtLoaderProtocol(&XtLdrProtocol);
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if(Status != STATUS_EFI_SUCCESS)
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{
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/* Failed to open loader protocol */
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return STATUS_EFI_PROTOCOL_ERROR;
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}
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XtFramebufferProtocol.GetDisplayDriver = FbGetDisplayDriver;
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XtFramebufferProtocol.GetDisplayInformation = FbGetDisplayInformation;
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XtFramebufferProtocol.Initialize = FbInitializeDisplay;
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XtFramebufferProtocol.PrintDisplayInformation = FbPrintDisplayInformation;
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/* Register XTOS boot protocol */
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return EfiSystemTable->BootServices->InstallProtocolInterface(&Handle, &Guid, EFI_NATIVE_INTERFACE,
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&XtFramebufferProtocol);
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}
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