X-Git-Url: https://code.delx.au/refind/blobdiff_plain/0b68b31f9b0b3995fd27f8eb71219cea2c40d5de..a0bab7e95672ae7438f7fdb806b9b167a5b04e07:/libeg/screen.c diff --git a/libeg/screen.c b/libeg/screen.c index 3200ef9..1856cbd 100644 --- a/libeg/screen.c +++ b/libeg/screen.c @@ -33,6 +33,14 @@ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ +/* + * Modifications copyright (c) 2012 Roderick W. Smith + * + * Modifications distributed under the terms of the GNU General Public + * License (GPL) version 3 (GPLv3), a copy of which must be distributed + * with this source code or binaries made from it. + * + */ #include "libegint.h" #include "../refind/screen.h" @@ -65,24 +73,14 @@ static UINTN egScreenHeight = 600; // Screen handling // -VOID egInitScreen(VOID) -{ +// Make the necessary system calls to identify the current graphics mode. +// Stores the results in the file-global variables egScreenWidth, +// egScreenHeight, and egHasGraphics. The first two of these will be +// unchanged if neither GraphicsOutput nor UgaDraw is a valid pointer. +static VOID egDetermineScreenSize(VOID) { EFI_STATUS Status = EFI_SUCCESS; UINT32 UGAWidth, UGAHeight, UGADepth, UGARefreshRate; - // get protocols - Status = LibLocateProtocol(&ConsoleControlProtocolGuid, (VOID **) &ConsoleControl); - if (EFI_ERROR(Status)) - ConsoleControl = NULL; - - Status = LibLocateProtocol(&UgaDrawProtocolGuid, (VOID **) &UgaDraw); - if (EFI_ERROR(Status)) - UgaDraw = NULL; - - Status = LibLocateProtocol(&GraphicsOutputProtocolGuid, (VOID **) &GraphicsOutput); - if (EFI_ERROR(Status)) - GraphicsOutput = NULL; - // get screen size egHasGraphics = FALSE; if (GraphicsOutput != NULL) { @@ -99,67 +97,124 @@ VOID egInitScreen(VOID) egHasGraphics = TRUE; } } +} // static VOID egDetermineScreenSize() + +VOID egGetScreenSize(OUT UINTN *ScreenWidth, OUT UINTN *ScreenHeight) +{ + egDetermineScreenSize(); + + if (ScreenWidth != NULL) + *ScreenWidth = egScreenWidth; + if (ScreenHeight != NULL) + *ScreenHeight = egScreenHeight; +} + +VOID egInitScreen(VOID) +{ + EFI_STATUS Status = EFI_SUCCESS; + + // get protocols + Status = LibLocateProtocol(&ConsoleControlProtocolGuid, (VOID **) &ConsoleControl); + if (EFI_ERROR(Status)) + ConsoleControl = NULL; + + Status = LibLocateProtocol(&UgaDrawProtocolGuid, (VOID **) &UgaDraw); + if (EFI_ERROR(Status)) + UgaDraw = NULL; + + Status = LibLocateProtocol(&GraphicsOutputProtocolGuid, (VOID **) &GraphicsOutput); + if (EFI_ERROR(Status)) + GraphicsOutput = NULL; + + egDetermineScreenSize(); } -// 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. +// Convert a graphics mode (in *ModeWidth) to a width and height (returned in +// *ModeWidth and *Height, respectively). +// Returns TRUE if successful, FALSE if not (invalid mode, typically) +BOOLEAN egGetResFromMode(UINTN *ModeWidth, UINTN *Height) { + UINTN Size; + EFI_STATUS Status; + EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *Info = NULL; + + if ((ModeWidth != NULL) && (Height != NULL)) { + Status = refit_call4_wrapper(GraphicsOutput->QueryMode, GraphicsOutput, *ModeWidth, &Size, &Info); + if ((Status == EFI_SUCCESS) && (Info != NULL)) { + *ModeWidth = Info->HorizontalResolution; + *Height = Info->VerticalResolution; + return TRUE; + } + } + return FALSE; +} // BOOLEAN egGetResFromMode() + +// Sets the screen resolution to the specified value, if possible. If *ScreenHeight +// is 0 and GOP mode is detected, assume that *ScreenWidth contains a GOP mode +// number rather than a horizontal resolution. If the specified resolution is not +// valid, displays a warning with the valid modes on GOP (UEFI) systems, or silently +// fails on UGA (EFI 1.x) systems. Note that this function attempts to set ANY screen +// resolution, even 0x0 or ridiculously large values. +// Upon success, returns actual screen resolution in *ScreenWidth and *ScreenHeight. +// These values are unchanged upon failure. // 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; +BOOLEAN egSetScreenSize(IN OUT UINTN *ScreenWidth, IN OUT UINTN *ScreenHeight) { + EFI_STATUS Status = EFI_SUCCESS; + EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *Info; + UINTN Size; + UINT32 ModeNum = 0; + UINT32 UGAWidth, UGAHeight, UGADepth, UGARefreshRate; + BOOLEAN ModeSet = FALSE; + + if ((ScreenWidth == NULL) || (ScreenHeight == NULL)) + return FALSE; 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 (*ScreenHeight == 0) { // User specified a mode number (stored in *ScreenWidth); use it directly + ModeNum = (UINT32) *ScreenWidth; + if (egGetResFromMode(ScreenWidth, ScreenHeight) && + (refit_call2_wrapper(GraphicsOutput->SetMode, GraphicsOutput, ModeNum) == EFI_SUCCESS)) { + ModeSet = TRUE; + } + + // User specified width & height; must find mode... + } else { + // Do a loop through the modes to see if the specified one is available; + // and if so, switch to it.... + do { + Status = refit_call4_wrapper(GraphicsOutput->QueryMode, GraphicsOutput, ModeNum, &Size, &Info); + if ((Status == EFI_SUCCESS) && (Size >= sizeof(*Info) && (Info != NULL)) && + (Info->HorizontalResolution == *ScreenWidth) && (Info->VerticalResolution == *ScreenHeight)) { + Status = refit_call2_wrapper(GraphicsOutput->SetMode, GraphicsOutput, ModeNum); + ModeSet = (Status == EFI_SUCCESS); + } // if + } while ((++ModeNum < GraphicsOutput->Mode->MaxMode) && !ModeSet); + } // if/else if (ModeSet) { - egScreenWidth = ScreenWidth; - egScreenHeight = ScreenHeight; + egScreenWidth = *ScreenWidth; + egScreenHeight = *ScreenHeight; } else {// If unsuccessful, display an error message for the user.... SwitchToText(FALSE); - Print(L"Error setting graphics mode %d x %d; using default mode!\nAvailable modes are:\n", ScreenWidth, ScreenHeight); + Print(L"Error setting graphics mode %d x %d; using default mode!\nAvailable modes are:\n", *ScreenWidth, *ScreenHeight); ModeNum = 0; do { Status = refit_call4_wrapper(GraphicsOutput->QueryMode, GraphicsOutput, ModeNum, &Size, &Info); - if (Status == EFI_SUCCESS) { + if ((Status == EFI_SUCCESS) && (Info != NULL)) { Print(L"Mode %d: %d x %d\n", ModeNum, Info->HorizontalResolution, Info->VerticalResolution); } // else - } while ((ModeNum++ < 10) || (Status == EFI_SUCCESS)); -// 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() + } while (++ModeNum < GraphicsOutput->Mode->MaxMode); PauseForKey(); SwitchToGraphics(); - } // if() + } // if GOP mode (UEFI) + } 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); + Status = refit_call5_wrapper(UgaDraw->SetMode, UgaDraw, *ScreenWidth, *ScreenHeight, UGADepth, UGARefreshRate); if (Status == EFI_SUCCESS) { - egScreenWidth = ScreenWidth; - egScreenHeight = ScreenHeight; + egScreenWidth = *ScreenWidth; + egScreenHeight = *ScreenHeight; ModeSet = TRUE; } else { // TODO: Find a list of supported modes and display it. @@ -167,44 +222,40 @@ BOOLEAN egSetScreenSize(IN UINTN ScreenWidth, IN UINTN ScreenHeight) { // This is just a placeholder until something better can be done.... Print(L"Error setting graphics mode %d x %d; unsupported mode!\n"); } // if/else - } // if/else if + } // if/else if UGA mode (EFI 1.x) return (ModeSet); } // BOOLEAN egSetScreenSize() -VOID egGetScreenSize(OUT UINTN *ScreenWidth, OUT UINTN *ScreenHeight) -{ - if (ScreenWidth != NULL) - *ScreenWidth = egScreenWidth; - if (ScreenHeight != NULL) - *ScreenHeight = egScreenHeight; -} - -// Set a text mode -// Returns the mode that was actually set. -UINT32 egSetTextMode(UINT32 RequestedMode) { +// Set a text mode. +// Returns TRUE if the mode actually changed, FALSE otherwise. +// Note that a FALSE return value can mean either an error or no change +// necessary. +BOOLEAN egSetTextMode(UINT32 RequestedMode) { UINTN i = 0, Width, Height; - UINT32 UsedMode = ST->ConOut->Mode->Mode; EFI_STATUS Status; + BOOLEAN ChangedIt = FALSE; - if (RequestedMode != ST->ConOut->Mode->Mode) { + if ((RequestedMode != DONT_CHANGE_TEXT_MODE) && (RequestedMode != ST->ConOut->Mode->Mode)) { +// SwitchToGraphics(); Status = refit_call2_wrapper(ST->ConOut->SetMode, ST->ConOut, RequestedMode); if (Status == EFI_SUCCESS) { - UsedMode = RequestedMode; + ChangedIt = TRUE; } else { SwitchToText(FALSE); - Print(L"Error setting text mode %d; available modes are:\n", ST->ConOut->Mode->Mode); + Print(L"\nError setting text mode %d; available modes are:\n", RequestedMode); do { Status = refit_call4_wrapper(ST->ConOut->QueryMode, ST->ConOut, i, &Width, &Height); if (Status == EFI_SUCCESS) - Print(L"Mode: %d: %d x %d\n", i, Width, Height); - } while ((i++ < 2) || (Status == EFI_SUCCESS)); + Print(L"Mode %d: %d x %d\n", i, Width, Height); + } while (++i < ST->ConOut->Mode->MaxMode); + Print(L"Mode %d: Use default mode\n", DONT_CHANGE_TEXT_MODE); PauseForKey(); SwitchToGraphics(); } // if/else successful change } // if need to change mode - return UsedMode; -} // UINT32 egSetTextMode() + return ChangedIt; +} // BOOLEAN egSetTextMode() CHAR16 * egScreenDescription(VOID) { @@ -280,9 +331,15 @@ VOID egClearScreen(IN EG_PIXEL *Color) if (!egHasGraphics) return; - FillColor.Red = Color->r; - FillColor.Green = Color->g; - FillColor.Blue = Color->b; + if (Color != NULL) { + FillColor.Red = Color->r; + FillColor.Green = Color->g; + FillColor.Blue = Color->b; + } else { + FillColor.Red = 0x0; + FillColor.Green = 0x0; + FillColor.Blue = 0x0; + } FillColor.Reserved = 0; if (GraphicsOutput != NULL) { @@ -290,10 +347,9 @@ VOID egClearScreen(IN EG_PIXEL *Color) // layout, and the header from TianoCore actually defines them // to be the same type. refit_call10_wrapper(GraphicsOutput->Blt, GraphicsOutput, (EFI_GRAPHICS_OUTPUT_BLT_PIXEL *)&FillColor, EfiBltVideoFill, - 0, 0, 0, 0, egScreenWidth, egScreenHeight, 0); + 0, 0, 0, 0, egScreenWidth, egScreenHeight, 0); } else if (UgaDraw != NULL) { - refit_call10_wrapper(UgaDraw->Blt, UgaDraw, &FillColor, EfiUgaVideoFill, - 0, 0, 0, 0, egScreenWidth, egScreenHeight, 0); + refit_call10_wrapper(UgaDraw->Blt, UgaDraw, &FillColor, EfiUgaVideoFill, 0, 0, 0, 0, egScreenWidth, egScreenHeight, 0); } }