ueficirruslogic5430graphicsoutput.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 1,045 行 · 第 1/3 页

  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->GraphicsOutput.Mode->Mode].HorizontalResolution;
  ScreenHeight  = Private->ModeData[Private->GraphicsOutput.Mode->Mode].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);
}