/* $NetBSD: modelist.c,v 1.1.1.3 2021/09/30 18:50:09 jmcneill Exp $ */ #include #include extern EFI_GUID GraphicsOutputProtocol; static void print_modes(EFI_GRAPHICS_OUTPUT_PROTOCOL *gop) { int i, imax; EFI_STATUS rc; if (gop->Mode) { imax = gop->Mode->MaxMode; Print(L"GOP reports MaxMode %d\n", imax); } else { Print(L"gop->Mode is NULL\n"); imax = 1; } for (i = 0; i < imax; i++) { EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *info; UINTN SizeOfInfo; rc = uefi_call_wrapper(gop->QueryMode, 4, gop, i, &SizeOfInfo, &info); if (rc == EFI_NOT_STARTED) { Print(L"gop->QueryMode() returned %r\n", rc); Print(L"Trying to start GOP with SetMode().\n"); rc = uefi_call_wrapper(gop->SetMode, 2, gop, gop->Mode ? gop->Mode->Mode : 0); rc = uefi_call_wrapper(gop->QueryMode, 4, gop, i, &SizeOfInfo, &info); } if (EFI_ERROR(rc)) { Print(L"%d: Bad response from QueryMode: %r (%d)\n", i, rc, rc); continue; } Print(L"%c%d: %dx%d ", (gop->Mode && CompareMem(info,gop->Mode->Info,sizeof(*info)) == 0 ) ? '*' : ' ', i, info->HorizontalResolution, info->VerticalResolution); switch(info->PixelFormat) { case PixelRedGreenBlueReserved8BitPerColor: Print(L"RGBR"); break; case PixelBlueGreenRedReserved8BitPerColor: Print(L"BGRR"); break; case PixelBitMask: Print(L"R:%08x G:%08x B:%08x X:%08x", info->PixelInformation.RedMask, info->PixelInformation.GreenMask, info->PixelInformation.BlueMask, info->PixelInformation.ReservedMask); break; case PixelBltOnly: Print(L"(blt only)"); break; default: Print(L"(Invalid pixel format)"); break; } Print(L" pitch %d\n", info->PixelsPerScanLine); } } static EFI_STATUS SetWatchdog(UINTN seconds) { EFI_STATUS rc; rc = uefi_call_wrapper(BS->SetWatchdogTimer, 4, seconds, 0x1ffff, 0, NULL); if (EFI_ERROR(rc)) { CHAR16 Buffer[64]; StatusToString(Buffer, rc); Print(L"Bad response from QueryMode: %s (%d)\n", Buffer, rc); } return rc; } EFI_STATUS efi_main (EFI_HANDLE image_handle, EFI_SYSTEM_TABLE *systab) { EFI_STATUS rc; EFI_GRAPHICS_OUTPUT_PROTOCOL *gop; InitializeLib(image_handle, systab); SetWatchdog(10); rc = LibLocateProtocol(&GraphicsOutputProtocol, (void **)&gop); if (EFI_ERROR(rc)) { Print(L"Could not locate GOP: %r\n", rc); return rc; } if (!gop) { Print(L"LocateProtocol(GOP, &gop) returned %r but GOP is NULL\n", rc); return EFI_UNSUPPORTED; } print_modes(gop); SetWatchdog(0); return EFI_SUCCESS; }