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Diffstat (limited to 'private/ntos/nthals/halflex/xxdisp.c')
| -rw-r--r-- | private/ntos/nthals/halflex/xxdisp.c | 293 |
1 files changed, 293 insertions, 0 deletions
diff --git a/private/ntos/nthals/halflex/xxdisp.c b/private/ntos/nthals/halflex/xxdisp.c new file mode 100644 index 000000000..2722c3223 --- /dev/null +++ b/private/ntos/nthals/halflex/xxdisp.c @@ -0,0 +1,293 @@ +/*++ + +Copyright (c) 1991 Microsoft Corporation + +Module Name: + + jxdisp.c + +Abstract: + + This module implements the HAL display initialization and output routines + for a MIPS R3000 or R4000 Jazz system. + +Author: + + Andre Vachon (andreva) 09-May-1992 + David N. Cutler (davec) 27-Apr-1991 + Michael D. Kinney 30-Apr-1995 + +Environment: + + Kernel mode + +Revision History: + +--*/ + +#include "halp.h" + +#define CSI 0x9b +#define MAX_DISPLAY_BUFFER 256 + +int sprintf(); + +extern ULONG IoSpaceAlreadyMapped; + +static UCHAR DisplayInitializationString[] = {CSI,'3','7',';','4','4','m',CSI,'2','J',0}; +static UCHAR CarriageReturnString[] = {10,13,0}; + +static ULONG HalOwnsDisplay = FALSE; +static ULONG DisplayFile; + +static UCHAR DisplayBuffer[MAX_DISPLAY_BUFFER]; +static ULONG DisplayBufferInitialized = FALSE; + +PHAL_RESET_DISPLAY_PARAMETERS HalpResetDisplayParameters; + + +VOID +HalAcquireDisplayOwnership ( + IN PHAL_RESET_DISPLAY_PARAMETERS ResetDisplayParameters + ) + +/*++ + +Routine Description: + + This routine switches ownership of the display away from the HAL to + the system display driver. It is called when the system has reached + a point during bootstrap where it is self supporting and can output + its own messages. Once ownership has passed to the system display + driver any attempts to output messages using HalDisplayString must + result in ownership of the display reverting to the HAL and the + display hardware reinitialized for use by the HAL. + +Arguments: + + ResetDisplayParameters - if non-NULL the address of a function + the hal can call to reset the video card. The function returns + TRUE if the display was reset. + +Return Value: + + None. + +--*/ + +{ + HalpAllocateArcsResources(); + ArcClose(DisplayFile); + HalpFreeArcsResources(); + HalOwnsDisplay = FALSE; + HalpResetDisplayParameters = ResetDisplayParameters; + return; +} + + +VOID +HalDisplayString ( + PUCHAR String + ) + +/*++ + +Routine Description: + + This routine displays a character string on the display screen. + +Arguments: + + String - Supplies a pointer to the characters that are to be displayed. + +Return Value: + + None. + +--*/ + +{ + ULONG Count; + ULONG i; + + if (DisplayBufferInitialized==FALSE) { + DisplayBufferInitialized = TRUE; + strcpy(DisplayBuffer,""); + } + + if (IoSpaceAlreadyMapped == FALSE) { + if ((strlen(DisplayBuffer)+strlen(String)) < MAX_DISPLAY_BUFFER) { + strcat(DisplayBuffer,String); + } + return; + } + + if (HalOwnsDisplay==FALSE) { + + if (HalpResetDisplayParameters != NULL) { + (HalpResetDisplayParameters)(80,25); + } + + HalpResetX86DisplayAdapter(); + + HalpAllocateArcsResources(); + + ArcOpen(ArcGetEnvironmentVariable("ConsoleOut"),ArcOpenWriteOnly,&DisplayFile); + ArcWrite(DisplayFile,DisplayInitializationString,strlen(DisplayInitializationString),&Count); + if (strlen(DisplayBuffer)!=0) { + + for(i=0;i<strlen(DisplayBuffer);i++) { + switch (DisplayBuffer[i]) { + case '\n' : ArcWrite(DisplayFile,CarriageReturnString,strlen(CarriageReturnString),&Count); + break; + default : ArcWrite(DisplayFile,&(DisplayBuffer[i]),1,&Count); + break; + } + } + + strcpy(DisplayBuffer,""); + } + + HalpFreeArcsResources(); + + HalOwnsDisplay=TRUE; + + } + + HalpAllocateArcsResources(); + + for(i=0;i<strlen(String);i++) { + switch (String[i]) { + case '\n' : ArcWrite(DisplayFile,CarriageReturnString,strlen(CarriageReturnString),&Count); + break; + default : ArcWrite(DisplayFile,&(String[i]),1,&Count); + break; + } + } + + HalpFreeArcsResources(); + + return; +} + + +VOID +HalQueryDisplayParameters ( + OUT PULONG WidthInCharacters, + OUT PULONG HeightInLines, + OUT PULONG CursorColumn, + OUT PULONG CursorRow + ) + +/*++ + +Routine Description: + + This routine return information about the display area and current + cursor position. + +Arguments: + + WidthInCharacter - Supplies a pointer to a varible that receives + the width of the display area in characters. + + HeightInLines - Supplies a pointer to a variable that receives the + height of the display area in lines. + + CursorColumn - Supplies a pointer to a variable that receives the + current display column position. + + CursorRow - Supplies a pointer to a variable that receives the + current display row position. + +Return Value: + + None. + +--*/ + +{ + ARC_DISPLAY_STATUS *DisplayStatus; + + // + // Get the display parameter values and return. + // + + // + // If the HAL does not already own the display, then print an empty string. + // This guarantees that the file descriptor DisplayFile is valid. + // + + if (!HalOwnsDisplay) { + HalDisplayString(""); + } + + // + // Make firmware call to get the display's current status + // + + HalpAllocateArcsResources(); + + DisplayStatus = ArcGetDisplayStatus(DisplayFile); + + HalpFreeArcsResources(); + + *WidthInCharacters = DisplayStatus->CursorMaxXPosition; + *HeightInLines = DisplayStatus->CursorMaxYPosition; + *CursorColumn = DisplayStatus->CursorXPosition; + *CursorRow = DisplayStatus->CursorYPosition; + + return; +} + +VOID +HalSetDisplayParameters ( + IN ULONG CursorColumn, + IN ULONG CursorRow + ) + +/*++ + +Routine Description: + + This routine set the current cursor position on the display area. + +Arguments: + + CursorColumn - Supplies the new display column position. + + CursorRow - Supplies a the new display row position. + +Return Value: + + None. + +--*/ + +{ + CHAR SetCursorPositionString[20]; + ULONG Count; + + // + // If the HAL does not already own the display, then print an empty string. + // This guarantees that the file descriptor DisplayFile is valid. + // + + if (!HalOwnsDisplay) { + HalDisplayString(""); + } + + // + // Build ANSI sequence to set the cursor position. + // + + sprintf(SetCursorPositionString,"%c%d;%dH",CSI,CursorRow,CursorColumn); + + HalpAllocateArcsResources(); + + ArcWrite(DisplayFile,SetCursorPositionString,strlen(SetCursorPositionString),&Count); + + HalpFreeArcsResources(); + + return; +} |