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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; 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. This function is the main entry of the platform setup entry.
The function will present the main menu of the system setup, The function will present the main menu of the system setup,
@ -1160,7 +1117,6 @@ PlatformBdsEnterFrontPage (
) )
{ {
EFI_STATUS Status; EFI_STATUS Status;
EFI_STATUS StatusHotkey;
EFI_BOOT_LOGO_PROTOCOL *BootLogo; EFI_BOOT_LOGO_PROTOCOL *BootLogo;
EFI_GRAPHICS_OUTPUT_PROTOCOL *GraphicsOutput; EFI_GRAPHICS_OUTPUT_PROTOCOL *GraphicsOutput;
EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *SimpleTextOut; EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *SimpleTextOut;
@ -1205,8 +1161,6 @@ PlatformBdsEnterFrontPage (
} }
if (GraphicsOutput != NULL) { if (GraphicsOutput != NULL) {
Status = GopSetModeAndReconnectTextOut(GraphicsOutput, 0);
// //
// Get current video resolution and text mode. // Get current video resolution and text mode.
// //
@ -1278,34 +1232,11 @@ PlatformBdsEnterFrontPage (
gST->ConIn->ReadKeyStroke(gST->ConIn, &Key); 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 { } else {
HotkeyBoot (); if (TimeoutDefault == 0) {
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
//
goto Exit; goto Exit;
}
} }
} }