VOID DebugPause(VOID)
{
// show console and wait for key
SwitchToText(FALSE);
PauseForKey();
// reset error flag
haveError = FALSE;
}
VOID FinishTextScreen(IN BOOLEAN WaitAlways)
{
if (haveError || WaitAlways) {
PauseForKey();
SwitchToText(FALSE);
}
// reset error flag
haveError = FALSE;
}
// Sets the screen resolution to the specified value, if possible.
// If the specified value is not valid, displays a warning with the valid
// modes on UEFI systems, or silently fails on EFI 1.x systems. Note that
// this function attempts to set ANY screen resolution, even 0x0 or
// ridiculously large values.
// Returns TRUE if successful, FALSE if not.
BOOLEAN egSetScreenSize(IN UINTN ScreenWidth, IN UINTN ScreenHeight) {
EFI_STATUS Status = EFI_SUCCESS;
EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *Info;
UINT32 ModeNum = 0;
UINTN Size;
BOOLEAN ModeSet = FALSE;
UINT32 UGAWidth, UGAHeight, UGADepth, UGARefreshRate;
if (GraphicsOutput != NULL) { // GOP mode (UEFI)
// Do a loop through the modes to see if the specified one is available;
// and if so, switch to it....
while ((Status == EFI_SUCCESS) && (!ModeSet)) {
Status = refit_call4_wrapper(GraphicsOutput->QueryMode, GraphicsOutput, ModeNum, &Size, &Info);
if ((Status == EFI_SUCCESS) && (Size >= sizeof(*Info)) &&
(Info->HorizontalResolution == ScreenWidth) && (Info->VerticalResolution == ScreenHeight)) {
Status = refit_call2_wrapper(GraphicsOutput->SetMode, GraphicsOutput, ModeNum);
ModeSet = (Status == EFI_SUCCESS);
} // if
ModeNum++;
} // while()
if (ModeSet) {
egScreenWidth = ScreenWidth;
egScreenHeight = ScreenHeight;
} else {// If unsuccessful, display an error message for the user....
Print(L"Error setting mode %d x %d; using default mode!\nAvailable modes are:\n", ScreenWidth, ScreenHeight);
ModeNum = 0;
Status = EFI_SUCCESS;
while (Status == EFI_SUCCESS) {
Status = refit_call4_wrapper(GraphicsOutput->QueryMode, GraphicsOutput, ModeNum, &Size, &Info);
if ((Status == EFI_SUCCESS) && (Size >= sizeof(*Info))) {
Print(L"Mode %d: %d x %d\n", ModeNum, Info->HorizontalResolution, Info->VerticalResolution);
} // else
ModeNum++;
} // while()
PauseForKey();
} // if()
} else if (UgaDraw != NULL) { // UGA mode (EFI 1.x)
// Try to use current color depth & refresh rate for new mode. Maybe not the best choice
// in all cases, but I don't know how to probe for alternatives....
Status = refit_call5_wrapper(UgaDraw->GetMode, UgaDraw, &UGAWidth, &UGAHeight, &UGADepth, &UGARefreshRate);
Status = refit_call5_wrapper(UgaDraw->SetMode, UgaDraw, ScreenWidth, ScreenHeight, UGADepth, UGARefreshRate);
if (Status == EFI_SUCCESS) {
egScreenWidth = ScreenWidth;
egScreenHeight = ScreenHeight;
ModeSet = TRUE;
} else {
// TODO: Find a list of supported modes and display it.
// NOTE: Below doesn't actually appear unless we explicitly switch to text mode.
// This is just a placeholder until something better can be done....
Print(L"Error setting mode %d x %d; unsupported mode!\n");
} // if/else
} // if/else if
return (ModeSet);
} // BOOLEAN egSetScreenSize()
VOID FinishExternalScreen(VOID)
{
// make sure we clean up later
GraphicsScreenDirty = TRUE;
if (haveError) {
SwitchToText(FALSE);
PauseForKey();
}
// Reset the screen resolution, in case external program changed it....
SetupScreen();
// reset error flag
haveError = FALSE;
}
