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Diffstat (limited to 'c/src/lib/libbsp/powerpc/ppcn_60x/console/vga.c')
-rw-r--r--c/src/lib/libbsp/powerpc/ppcn_60x/console/vga.c355
1 files changed, 0 insertions, 355 deletions
diff --git a/c/src/lib/libbsp/powerpc/ppcn_60x/console/vga.c b/c/src/lib/libbsp/powerpc/ppcn_60x/console/vga.c
deleted file mode 100644
index 16b30e1eda..0000000000
--- a/c/src/lib/libbsp/powerpc/ppcn_60x/console/vga.c
+++ /dev/null
@@ -1,355 +0,0 @@
-/*
- * This file contains the TTY driver for VGA
- *
- * COPYRIGHT (c) 1998 by Radstone Technology
- *
- *
- * THIS FILE IS PROVIDED TO YOU, THE USER, "AS IS", WITHOUT WARRANTY OF ANY
- * KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK
- * AS TO THE QUALITY AND PERFORMANCE OF ALL CODE IN THIS FILE IS WITH YOU.
- *
- * You are hereby granted permission to use, copy, modify, and distribute
- * this file, provided that this notice, plus the above copyright notice
- * and disclaimer, appears in all copies. Radstone Technology will provide
- * no support for this code.
- *
- * This driver uses the termios pseudo driver.
- */
-/*-------------------------------------------------------------------------+
-| (C) Copyright 1997 -
-| - NavIST Group - Real-Time Distributed Systems and Industrial Automation
-|
-| http://pandora.ist.utl.pt
-|
-| Instituto Superior Tecnico * Lisboa * PORTUGAL
-+--------------------------------------------------------------------------+
-| Disclaimer:
-|
-| This file is provided "AS IS" without warranty of any kind, either
-| expressed or implied.
-+--------------------------------------------------------------------------+
-| This code is based on:
-| outch.c,v 1.4 1995/12/19 20:07:27 joel Exp - go32 BSP
-| With the following copyright notice:
-| **************************************************************************
-| * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. *
-| * On-Line Applications Research Corporation (OAR). *
-| **************************************************************************
-+--------------------------------------------------------------------------*/
-
-#include <bsp.h>
-
-#include <stdlib.h>
-#include <string.h>
-
-#include "vga_p.h"
-
-/*-------------------------------------------------------------------------+
-| Constants
-+--------------------------------------------------------------------------*/
-#define DISPLAY_CELL_COUNT (VGA_NUM_ROWS * VGA_NUM_COLS)
- /* Number of display cells. */
-#define TABSIZE 4 /* Number of spaces for TAB (\t) char. */
-#define WHITE 0x0007 /* White on Black background colour. */
-#define BLANK (WHITE | (' '<<8)) /* Blank character. */
-
-/*
- * This is imported from i8042.c to provide flow control
- */
-extern volatile boolean bScrollLock;
-
-/*-------------------------------------------------------------------------+
-| Global Variables
-+--------------------------------------------------------------------------*/
-/* Physical address of start of video text memory. */
-static uint16_t *videoRam = (uint16_t*)VGA_FB;
-/* Pointer for current output position in display. */
-static uint16_t *videoRamPtr = (uint16_t*)VGA_FB;
-static uint8_t videoRows = VGA_NUM_ROWS; /* Number of rows in display. */
-static uint8_t videoCols = VGA_NUM_COLS; /* Number of columns in display. */
-static uint8_t cursRow = 0; /* Current cursor row. */
-static uint8_t cursCol = 0; /* Current cursor column. */
-
-/*-------------------------------------------------------------------------+
-| Function: setHardwareCursorPos
-| Description: Set hardware video cursor at given offset into video RAM.
-| Global Variables: None.
-| Arguments: videoCursor - Offset into video memory.
-| Returns: Nothing.
-+--------------------------------------------------------------------------*/
-static inline void
-setHardwareCursorPos(uint16_t videoCursor)
-{
- VGA_WRITE_CRTC(0x0e, (videoCursor >> 8) & 0xff);
- VGA_WRITE_CRTC(0x0f, videoCursor & 0xff);
-} /* setHardwareCursorPos */
-
-/*-------------------------------------------------------------------------+
-| Function: updateVideoRamPtr
-| Description: Updates value of global variable "videoRamPtr" based on
-| current window's cursor position.
-| Global Variables: videoRamPtr, cursRow, cursCol.
-| Arguments: None.
-| Returns: Nothing.
-+--------------------------------------------------------------------------*/
-static inline void
-updateVideoRamPtr(void)
-{
- videoRamPtr = videoRam + cursRow * videoCols + cursCol;
-} /* updateVideoRamPtr */
-
-/*-------------------------------------------------------------------------+
-| Function: scrollUp
-| Description: Scrolls display up n lines.
-| Global Variables: None.
-| Arguments: lines - number of lines to scroll.
-| Returns: Nothing.
-+--------------------------------------------------------------------------*/
-static void
-scrollUp(uint8_t lines)
-{
- /* Number of blank display cells on bottom of window. */
- uint16_t blankCount;
-
- /* Source and destination pointers for memory copy operations. */
- uint16_t *ptrDst, *ptrSrc;
-
- if(lines<videoRows) /* Move window's contents up. */
- {
- /*
- * Number of non-blank cells on upper part
- * of display (total - blank).
- */
- uint16_t nonBlankCount;
-
- blankCount = lines * videoCols;
- nonBlankCount = DISPLAY_CELL_COUNT - blankCount;
- ptrSrc = videoRam + blankCount;
- ptrDst = videoRam;
-
- while(nonBlankCount--)
- {
- *ptrDst++ = *ptrSrc++;
- }
- }
- else
- {
- /*
- * Clear the whole display.
- */
- blankCount = DISPLAY_CELL_COUNT;
- ptrDst = videoRam;
- }
-
- /* Fill bottom with blanks. */
- while (blankCount-->0)
- {
- *ptrDst++ = BLANK;
- }
-} /* scrollUp */
-
-/*-------------------------------------------------------------------------+
-| Function: printCHAR
-| Description: Print printable character to display.
-| Global Variables: videoRamPtr, cursRow, cursCol.
-| Arguments: c - character to write to display.
-| Returns: Nothing.
-+--------------------------------------------------------------------------*/
-static void
-printCHAR(char c)
-{
- *videoRamPtr++ = (c<<8) | WHITE;
- cursCol++;
- if(cursCol==videoCols)
- {
- cursCol = 0;
- cursRow++;
- if(cursRow==videoRows)
- {
- cursRow--;
- scrollUp(1);
- videoRamPtr -= videoCols;
- }
- }
-} /* printCHAR */
-
-/*-------------------------------------------------------------------------+
-| Function: printBS
-| Description: Print BS (BackSpace - '\b') character to display.
-| Global Variables: videoRamPtr, cursRow, cursCol.
-| Arguments: None.
-| Returns: Nothing.
-+--------------------------------------------------------------------------*/
-static inline void
-printBS(void)
-{
- /* Move cursor back one cell. */
- if(cursCol>0)
- {
- cursCol--;
- }
- else if(cursRow>0)
- {
- cursRow--;
- cursCol = videoCols - 1;
- }
- else
- {
- return;
- }
-
- /* Write a whitespace. */
- *(--videoRamPtr) = BLANK;
-} /* printBS */
-
-/*-------------------------------------------------------------------------+
-| Function: printHT
-| Description: Print HT (Horizontal Tab - '\t') character to display.
-| Global Variables: cursCol.
-| Arguments: None.
-| Returns: Nothing.
-+--------------------------------------------------------------------------*/
-static inline void
-printHT(void)
-{
- do
- {
- printCHAR(' ');
- }
- while (cursCol % TABSIZE);
-} /* printHT */
-
-/*-------------------------------------------------------------------------+
-| Function: printLF
-| Description: Print LF (Line Feed - '\n') character to display.
-| Global Variables: cursRow.
-| Arguments: None.
-| Returns: Nothing.
-+--------------------------------------------------------------------------*/
-static inline void
-printLF(void)
-{
- cursRow++;
- if(cursRow==videoRows)
- {
- cursRow--;
- scrollUp(1);
- }
- updateVideoRamPtr();
-} /* printLF */
-
-/*-------------------------------------------------------------------------+
-| Function: printCR
-| Description: Print CR (Carriage Return - '\r') to display.
-| Global Variables: cursCol.
-| Arguments: None.
-| Returns: Nothing.
-+--------------------------------------------------------------------------*/
-static inline void
-printCR(void)
-{
- cursCol = 0;
- updateVideoRamPtr();
-} /* printCR */
-
-/*
- * Console Device Driver Entry Points
- */
-void
-vga_write(
- int minor,
- char cChar)
-{
- switch (cChar)
- {
- case '\b':
- printBS();
- break;
- case '\t':
- printHT();
- break;
- case '\n':
- printLF();
- break;
- case '\r':
- printCR();
- break;
- default:
- printCHAR(cChar);
- break;
- }
-
- setHardwareCursorPos(videoRamPtr - videoRam);
-} /* vga_write */
-
-/*
- * vga_write_support
- *
- * Console Termios output entry point.
- *
- */
-int vga_write_support(
- int minor,
- const char *buf,
- int len
-)
-{
- int nwrite = 0;
-
- while(bScrollLock)
- {
- /*
- * The Scroll lock on the keyboard is active
- */
- /*
- * Yield while we wait
- */
- rtems_task_wake_after(RTEMS_YIELD_PROCESSOR);
- }
-
- /*
- * Write each byte in the string to the display
- */
- while (nwrite<len)
- {
- /*
- * transmit character
- */
- vga_write(minor, *buf++);
- nwrite++;
- }
-
- /*
- * return the number of bytes written.
- */
- return nwrite;
-}
-
-boolean vga_probe(int minor)
-{
- uint8_t ucMiscIn;
-
- /*
- * Check for presence of VGA adaptor
- */
- inport_byte(0x3cc, ucMiscIn);
- if(ucMiscIn!=0xff)
- {
- /*
- * VGA device is present
- */
- return(TRUE);
- }
- return(FALSE);
-}
-
-void vga_init(int minor)
-{
- scrollUp(videoRows); /* Clear entire screen */
- setHardwareCursorPos(0); /* Cursor at upper left corner */
- /*
- * Enable the cursor
- */
- VGA_WRITE_CRTC(0x0a, 0x0e); /* Crt cursor start */
-}
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