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Frontpage: gut unnecessary mode changes

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minimize flicker between splash screen and BGRT
This commit is contained in:
Matt DeVillier
2017-04-05 18:01:13 -05:00
parent b0f8ea3c9c
commit 7f094cdf45
1 changed files with 3 additions and 72 deletions
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73
IntelFrameworkModulePkg/Universal/BdsDxe/FrontPage.c
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@ -1098,49 +1098,6 @@ ShowProgress (
return EFI_SUCCESS;
}
static EFI_STATUS GopSetModeAndReconnectTextOut(
IN EFI_GRAPHICS_OUTPUT_PROTOCOL *GraphicsOutput,
IN UINT32 ModeNumber)
{
UINTN HandleCount;
UINTN Index;
EFI_HANDLE *HandleBuffer;
EFI_STATUS Status;
if (GraphicsOutput == NULL) {
return EFI_UNSUPPORTED;
}
Status = GraphicsOutput->SetMode(GraphicsOutput, ModeNumber);
if (!EFI_ERROR (Status)) {
// When we change mode on GOP, we need to reconnect the drivers which produce simple text out
// Otherwise, they won't produce text based on the new resolution
Status = gBS->LocateHandleBuffer (
ByProtocol,
&gEfiSimpleTextOutProtocolGuid,
NULL,
&HandleCount,
&HandleBuffer
);
if (!EFI_ERROR (Status)) {
for (Index = 0; Index < HandleCount; Index++) {
gBS->DisconnectController (HandleBuffer[Index], NULL, NULL);
}
for (Index = 0; Index < HandleCount; Index++) {
gBS->ConnectController (HandleBuffer[Index], NULL, NULL, TRUE);
}
if (HandleBuffer != NULL) {
FreePool (HandleBuffer);
}
}
// return value is according to whether SetMode succeeded
Status = EFI_SUCCESS;
}
return Status;
}
/**
This function is the main entry of the platform setup entry.
The function will present the main menu of the system setup,
@ -1160,7 +1117,6 @@ PlatformBdsEnterFrontPage (
)
{
EFI_STATUS Status;
EFI_STATUS StatusHotkey;
EFI_BOOT_LOGO_PROTOCOL *BootLogo;
EFI_GRAPHICS_OUTPUT_PROTOCOL *GraphicsOutput;
EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *SimpleTextOut;
@ -1205,8 +1161,6 @@ PlatformBdsEnterFrontPage (
}
if (GraphicsOutput != NULL) {
Status = GopSetModeAndReconnectTextOut(GraphicsOutput, 0);
//
// Get current video resolution and text mode.
//
@ -1278,34 +1232,11 @@ PlatformBdsEnterFrontPage (
gST->ConIn->ReadKeyStroke(gST->ConIn, &Key);
}
//
// Ensure screen is clear when switch Console from Graphics mode to Text mode
//
gST->ConOut->EnableCursor (gST->ConOut, TRUE);
gST->ConOut->ClearScreen (gST->ConOut);
} else {
HotkeyBoot ();
if (TimeoutDefault != 0xffff) {
Status = ShowProgress (TimeoutDefault);
StatusHotkey = HotkeyBoot ();
if (!FeaturePcdGet(PcdBootlogoOnlyEnable) || !EFI_ERROR(Status) || !EFI_ERROR(StatusHotkey)){
//
// Ensure screen is clear when switch Console from Graphics mode to Text mode
// Skip it in normal boot
//
gST->ConOut->EnableCursor (gST->ConOut, TRUE);
gST->ConOut->ClearScreen (gST->ConOut);
}
if (EFI_ERROR (Status)) {
//
// Timeout or user press enter to continue
//
if (TimeoutDefault == 0) {
goto Exit;
}
}
}