DuetPkg/DxeIpl/Debug.c

   1 /*++
   2
   3 Copyright (c) 2006, Intel Corporation
   4 All rights reserved. This program and the accompanying materials
   5 are licensed and made available under the terms and conditions of the BSD License
   6 which accompanies this distribution.  The full text of the license may be found at
   7 http://opensource.org/licenses/bsd-license.php
   8
   9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11
  12 Module Name:
  13   Debug.c
  14
  15 Abstract:
  16
  17 Revision History:
  18
  19 --*/
  20
  21 #include "DxeIpl.h"
  22
  23 UINT8 *mCursor;
  24 UINT8 mHeaderIndex = 10;
  25
  26
  27 VOID
  28 PrintHeader (
  29   CHAR8 Char
  30   )
  31 {
  32   *(UINT8 *)(UINTN)(0x000b8000 + mHeaderIndex) = Char;
  33   mHeaderIndex += 2;
  34 }
  35
  36 VOID
  37 ClearScreen (
  38   VOID
  39   )
  40 {
  41   UINT32 Index;
  42
  43   mCursor = (UINT8 *)(UINTN)(0x000b8000 + 160);
  44   for (Index = 0; Index < 80 * 49; Index++) {
  45     *mCursor = ' ';
  46     mCursor += 2;
  47   }
  48   mCursor = (UINT8 *)(UINTN)(0x000b8000 + 160);
  49 }
  50
  51 VOID
  52 PrintValue (
  53   UINT32 Value
  54   )
  55 {
  56   UINT32 Index;
  57   UINT8  Char;
  58
  59   for (Index = 0; Index < 8; Index++) {
  60     Char = (UINT8)((Value >> ((7 - Index) * 4)) & 0x0f) + '0';
  61     if (Char > '9') {
  62       Char = Char - '0' - 10 + 'A';
  63     }
  64     *mCursor = Char;
  65     mCursor += 2;
  66   }
  67 }
  68
  69 VOID
  70 PrintValue64 (
  71   UINT64 Value
  72   )
  73 {
  74   PrintValue ((UINT32) RShiftU64 (Value, 32));
  75   PrintValue ((UINT32) Value);
  76 }
  77
  78
  79
  80 VOID
  81 PrintString (
  82   UINT8 *String
  83   )
  84 {
  85   UINT32 Index;
  86
  87   for (Index = 0; String[Index] != 0; Index++) {
  88     if (String[Index] == '\n') {
  89       mCursor = (UINT8 *)(UINTN)(0xb8000 + (((((UINTN)mCursor - 0xb8000) + 160) / 160) * 160));
  90     } else {
  91       *mCursor = String[Index];
  92       mCursor += 2;
  93     }
  94   }
  95 }
  96