cirruslogic5430ugadraw.c

来自「EFI BIOS是Intel提出的下一代的BIOS标准。这里上传的Edk源代码是」· C语言 代码 · 共 1,034 行 · 第 1/2 页

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                              );
      } else {
        Private->PciIo->Mem.Write (
                              Private->PciIo,
                              EfiPciIoWidthFillUint8,
                              0,
                              Offset,
                              Width * Height,
                              &Pixel
                              );
      }
    } else {
      for (SrcY = SourceY, DstY = DestinationY; SrcY < (Height + SourceY); SrcY++, DstY++) {
        Offset = (DstY * Private->ModeData[Private->CurrentMode].HorizontalResolution) + DestinationX;
        if (((Offset & 0x03) == 0) && ((Width & 0x03) == 0)) {
          Private->PciIo->Mem.Write (
                                Private->PciIo,
                                EfiPciIoWidthFillUint32,
                                0,
                                Offset,
                                Width >> 2,
                                &WidePixel
                                );
        } else {
          Private->PciIo->Mem.Write (
                                Private->PciIo,
                                EfiPciIoWidthFillUint8,
                                0,
                                Offset,
                                Width,
                                &Pixel
                                );
        }
      }
    }
    break;

  case EfiUgaBltBufferToVideo:
    for (SrcY = SourceY, DstY = DestinationY; SrcY < (Height + SourceY); SrcY++, DstY++) {

      for (X = 0; X < Width; X++) {
        Blt                     = (EFI_UGA_PIXEL *) ((UINT8 *) BltBuffer + (SrcY * Delta) + (SourceX + X) * sizeof (EFI_UGA_PIXEL));
        Private->LineBuffer[X]  = (UINT8) ((Blt->Red & 0xe0) | ((Blt->Green >> 3) & 0x1c) | ((Blt->Blue >> 6) & 0x03));
      }

      Offset = (DstY * Private->ModeData[Private->CurrentMode].HorizontalResolution) + DestinationX;

      if (((Offset & 0x03) == 0) && ((Width & 0x03) == 0)) {
        Private->PciIo->Mem.Write (
                              Private->PciIo,
                              EfiPciIoWidthUint32,
                              0,
                              Offset,
                              Width >> 2,
                              Private->LineBuffer
                              );
      } else {
        Private->PciIo->Mem.Write (
                              Private->PciIo,
                              EfiPciIoWidthUint8,
                              0,
                              Offset,
                              Width,
                              Private->LineBuffer
                              );
      }
    }
    break;
  }

  gBS->RestoreTPL (OriginalTPL);

  return EFI_SUCCESS;
}

//
// Construction and Destruction functions
//

EFI_STATUS
CirrusLogic5430UgaDrawConstructor (
  CIRRUS_LOGIC_5430_PRIVATE_DATA  *Private
  )
/*++

Routine Description:

Arguments:

Returns:

  None

--*/
// TODO:    Private - add argument and description to function comment
// TODO:    EFI_SUCCESS - add return value to function comment
{
  EFI_UGA_DRAW_PROTOCOL *UgaDraw;
  UINTN                 Index;

  //
  // Fill in Private->UgaDraw protocol
  //
  UgaDraw           = &Private->UgaDraw;

  UgaDraw->GetMode  = CirrusLogic5430UgaDrawGetMode;
  UgaDraw->SetMode  = CirrusLogic5430UgaDrawSetMode;
  UgaDraw->Blt      = CirrusLogic5430UgaDrawBlt;

  //
  // Initialize the private data
  //
  Private->MaxMode      = CIRRUS_LOGIC_5430_UGA_DRAW_MODE_COUNT;
  Private->CurrentMode  = 0;
  for (Index = 0; Index < Private->MaxMode; Index++) {
    Private->ModeData[Index].HorizontalResolution = CirrusLogic5430VideoModes[Index].Width;
    Private->ModeData[Index].VerticalResolution   = CirrusLogic5430VideoModes[Index].Height;
    Private->ModeData[Index].ColorDepth           = 32;
    Private->ModeData[Index].RefreshRate          = CirrusLogic5430VideoModes[Index].RefreshRate;
  }

  Private->HardwareNeedsStarting  = TRUE;
  Private->LineBuffer             = NULL;

  //
  // Initialize the hardware
  //
  UgaDraw->SetMode (
            UgaDraw,
            Private->ModeData[Private->CurrentMode].HorizontalResolution,
            Private->ModeData[Private->CurrentMode].VerticalResolution,
            Private->ModeData[Private->CurrentMode].ColorDepth,
            Private->ModeData[Private->CurrentMode].RefreshRate
            );
  DrawLogo (Private);

  return EFI_SUCCESS;
}

EFI_STATUS
CirrusLogic5430UgaDrawDestructor (
  CIRRUS_LOGIC_5430_PRIVATE_DATA  *Private
  )
/*++

Routine Description:

Arguments:

Returns:

  None

--*/
// TODO:    Private - add argument and description to function comment
// TODO:    EFI_SUCCESS - add return value to function comment
{
  return EFI_SUCCESS;
}

VOID
outb (
  CIRRUS_LOGIC_5430_PRIVATE_DATA  *Private,
  UINTN                           Address,
  UINT8                           Data
  )
/*++

Routine Description:

  TODO: Add function description

Arguments:

  Private - TODO: add argument description
  Address - TODO: add argument description
  Data    - TODO: add argument description

Returns:

  TODO: add return values

--*/
{
  Private->PciIo->Io.Write (
                      Private->PciIo,
                      EfiPciIoWidthUint8,
                      EFI_PCI_IO_PASS_THROUGH_BAR,
                      Address,
                      1,
                      &Data
                      );
}

VOID
outw (
  CIRRUS_LOGIC_5430_PRIVATE_DATA  *Private,
  UINTN                           Address,
  UINT16                          Data
  )
/*++

Routine Description:

  TODO: Add function description

Arguments:

  Private - TODO: add argument description
  Address - TODO: add argument description
  Data    - TODO: add argument description

Returns:

  TODO: add return values

--*/
{
  Private->PciIo->Io.Write (
                      Private->PciIo,
                      EfiPciIoWidthUint16,
                      EFI_PCI_IO_PASS_THROUGH_BAR,
                      Address,
                      1,
                      &Data
                      );
}

UINT8
inb (
  CIRRUS_LOGIC_5430_PRIVATE_DATA  *Private,
  UINTN                           Address
  )
/*++

Routine Description:

  TODO: Add function description

Arguments:

  Private - TODO: add argument description
  Address - TODO: add argument description

Returns:

  TODO: add return values

--*/
{
  UINT8 Data;

  Private->PciIo->Io.Read (
                      Private->PciIo,
                      EfiPciIoWidthUint8,
                      EFI_PCI_IO_PASS_THROUGH_BAR,
                      Address,
                      1,
                      &Data
                      );
  return Data;
}

UINT16
inw (
  CIRRUS_LOGIC_5430_PRIVATE_DATA  *Private,
  UINTN                           Address
  )
/*++

Routine Description:

  TODO: Add function description

Arguments:

  Private - TODO: add argument description
  Address - TODO: add argument description

Returns:

  TODO: add return values

--*/
{
  UINT16  Data;

  Private->PciIo->Io.Read (
                      Private->PciIo,
                      EfiPciIoWidthUint16,
                      EFI_PCI_IO_PASS_THROUGH_BAR,
                      Address,
                      1,
                      &Data
                      );
  return Data;
}

VOID
SetPaletteColor (
  CIRRUS_LOGIC_5430_PRIVATE_DATA  *Private,
  UINTN                           Index,
  UINT8                           Red,
  UINT8                           Green,
  UINT8                           Blue
  )
/*++

Routine Description:

  TODO: Add function description

Arguments:

  Private - TODO: add argument description
  Index   - TODO: add argument description
  Red     - TODO: add argument description
  Green   - TODO: add argument description
  Blue    - TODO: add argument description

Returns:

  TODO: add return values

--*/
{
  outb (Private, PALETTE_INDEX_REGISTER, (UINT8) Index);
  outb (Private, PALETTE_DATA_REGISTER, (UINT8) (Red >> 2));
  outb (Private, PALETTE_DATA_REGISTER, (UINT8) (Green >> 2));
  outb (Private, PALETTE_DATA_REGISTER, (UINT8) (Blue >> 2));
}

VOID
SetDefaultPalette (
  CIRRUS_LOGIC_5430_PRIVATE_DATA  *Private
  )
/*++

Routine Description:

  TODO: Add function description

Arguments:

  Private - TODO: add argument description

Returns:

  TODO: add return values

--*/
{
  UINTN Index;
  UINTN RedIndex;
  UINTN GreenIndex;
  UINTN BlueIndex;

  Index = 0;
  for (RedIndex = 0; RedIndex < 8; RedIndex++) {
    for (GreenIndex = 0; GreenIndex < 8; GreenIndex++) {
      for (BlueIndex = 0; BlueIndex < 4; BlueIndex++) {
        SetPaletteColor (Private, Index, (UINT8) (RedIndex << 5), (UINT8) (GreenIndex << 5), (UINT8) (BlueIndex << 6));
        Index++;
      }
    }
  }
}

STATIC
VOID
ClearScreen (
  CIRRUS_LOGIC_5430_PRIVATE_DATA  *Private
  )
/*++

Routine Description:

  TODO: Add function description

Arguments:

  Private - TODO: add argument description

Returns:

  TODO: add return values

--*/
{
  UINT32  Color;

  Color = 0;
  Private->PciIo->Mem.Write (
                        Private->PciIo,
                        EfiPciIoWidthFillUint32,
                        0,
                        0,
                        0x100000 >> 2,
                        &Color
                        );
}

VOID
DrawLogo (
  CIRRUS_LOGIC_5430_PRIVATE_DATA  *Private
  )
/*++

Routine Description:

  TODO: Add function description

Arguments:

  Private - TODO: add argument description

Returns:

  TODO: add return values

--*/
{
  UINTN Offset;
  UINTN X;
  UINTN Y;
  UINTN ScreenWidth;
  UINTN ScreenHeight;
  UINT8 Color;

  ScreenWidth   = Private->ModeData[Private->CurrentMode].HorizontalResolution;
  ScreenHeight  = Private->ModeData[Private->CurrentMode].VerticalResolution;

  Offset        = 0;
  for (Y = 0; Y < ScreenHeight; Y++) {
    for (X = 0; X < ScreenWidth; X++) {
      Color                   = (UINT8) (256 * (X + Y) / (ScreenWidth + ScreenHeight));
      Private->LineBuffer[X]  = Color;
    }

    Private->PciIo->Mem.Write (
                          Private->PciIo,
                          EfiPciIoWidthUint32,
                          0,
                          Offset + (Y * ScreenWidth),
                          ScreenWidth >> 2,
                          Private->LineBuffer
                          );
  }
}

VOID
InitializeGraphicsMode (
  CIRRUS_LOGIC_5430_PRIVATE_DATA  *Private,
  CIRRUS_LOGIC_5430_VIDEO_MODES   *ModeData
  )
/*++

Routine Description:

  TODO: Add function description

Arguments:

  Private   - TODO: add argument description
  ModeData  - TODO: add argument description

Returns:

  TODO: add return values

--*/
{
  UINT8 Byte;
  UINTN Index;

  outw (Private, SEQ_ADDRESS_REGISTER, 0x1206);
  outw (Private, SEQ_ADDRESS_REGISTER, 0x0012);

  for (Index = 0; Index < 15; Index++) {
    outw (Private, SEQ_ADDRESS_REGISTER, ModeData->SeqSettings[Index]);
  }

  outb (Private, SEQ_ADDRESS_REGISTER, 0x0f);
  Byte = (UINT8) ((inb (Private, SEQ_DATA_REGISTER) & 0xc7) ^ 0x30);
  outb (Private, SEQ_DATA_REGISTER, Byte);

  outb (Private, MISC_OUTPUT_REGISTER, ModeData->MiscSetting);
  outw (Private, GRAPH_ADDRESS_REGISTER, 0x0506);
  outw (Private, SEQ_ADDRESS_REGISTER, 0x0300);
  outw (Private, CRTC_ADDRESS_REGISTER, 0x2011);

  for (Index = 0; Index < 28; Index++) {
    outw (Private, CRTC_ADDRESS_REGISTER, (UINT16) ((ModeData->CrtcSettings[Index] << 8) | Index));
  }

  for (Index = 0; Index < 9; Index++) {
    outw (Private, GRAPH_ADDRESS_REGISTER, (UINT16) ((GraphicsController[Index] << 8) | Index));
  }

  inb (Private, INPUT_STATUS_1_REGISTER);

  for (Index = 0; Index < 21; Index++) {
    outb (Private, ATT_ADDRESS_REGISTER, (UINT8) Index);
    outb (Private, ATT_ADDRESS_REGISTER, AttributeController[Index]);
  }

  outb (Private, ATT_ADDRESS_REGISTER, 0x20);

  outw (Private, GRAPH_ADDRESS_REGISTER, 0x0009);
  outw (Private, GRAPH_ADDRESS_REGISTER, 0x000a);
  outw (Private, GRAPH_ADDRESS_REGISTER, 0x000b);
  outb (Private, DAC_PIXEL_MASK_REGISTER, 0xff);

  SetDefaultPalette (Private);
  ClearScreen (Private);
}
12

cirruslogic5430ugadraw.c - 源码说明

本页面展示了「EFI BIOS是Intel提出的下一代的BIOS标准。这里上传的Edk源代码是EFI BIOS源代码中的与平台无关部分的代码」中的 cirruslogic5430ugadraw.c 源码文件，采用 C语言 编程语言编写，共 1,034 行代码。您可以在线阅读完整代码内容，也可以返回资源详情页下载完整源码包进行本地学习和开发。

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