diff options
Diffstat (limited to 'ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/LcdGraphicsOutputDxe.c')
| -rw-r--r-- | ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/LcdGraphicsOutputDxe.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/LcdGraphicsOutputDxe.c b/ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/LcdGraphicsOutputDxe.c index 34a56b3d8..b42336446 100644 --- a/ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/LcdGraphicsOutputDxe.c +++ b/ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/LcdGraphicsOutputDxe.c @@ -133,7 +133,6 @@ InitializeDisplay ( // Setup all the relevant mode information
Instance->Gop.Mode->SizeOfInfo = sizeof(EFI_GRAPHICS_OUTPUT_MODE_INFORMATION);
Instance->Gop.Mode->FrameBufferBase = VramBaseAddress;
- Instance->Gop.Mode->FrameBufferSize = VramSize;
// Set the flag before changing the mode, to avoid infinite loops
mDisplayInitialized = TRUE;
@@ -225,7 +224,13 @@ LcdGraphicsExitBootServicesEvent ( IN VOID *Context
)
{
- //TODO: Implement me
+ // By default, this PCD is FALSE. But if a platform starts a predefined OS that
+ // does not use a framebuffer then we might want to disable the display controller
+ // to avoid to display corrupted information on the screen.
+ if (FeaturePcdGet (PcdGopDisableOnExitBootServices)) {
+ // Turn-off the Display controller
+ LcdShutdown ();
+ }
}
/***************************************
@@ -291,7 +296,8 @@ LcdGraphicsSetMode ( {
EFI_STATUS Status = EFI_SUCCESS;
EFI_GRAPHICS_OUTPUT_BLT_PIXEL FillColour;
- LCD_INSTANCE* Instance;
+ LCD_INSTANCE* Instance;
+ LCD_BPP Bpp;
Instance = LCD_INSTANCE_FROM_GOP_THIS (This);
@@ -320,6 +326,14 @@ LcdGraphicsSetMode ( // Update the UEFI mode information
This->Mode->Mode = ModeNumber;
LcdPlatformQueryMode (ModeNumber,&Instance->ModeInfo);
+ Status = LcdPlatformGetBpp(ModeNumber, &Bpp);
+ if (EFI_ERROR(Status)) {
+ DEBUG ((DEBUG_ERROR, "LcdGraphicsSetMode: ERROR - Couldn't get bytes per pixel, status: %r\n", Status));
+ goto EXIT;
+ }
+ This->Mode->FrameBufferSize = Instance->ModeInfo.VerticalResolution
+ * Instance->ModeInfo.PixelsPerScanLine
+ * GetBytesPerPixel(Bpp);
// Set the hardware to the new mode
Status = LcdSetMode (ModeNumber);
|