1 /*++
2
3 Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
4 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 #include "EfiLdr.h"
21 #include "Debug.h"
22
23 UINT8 *mCursor;
24 UINT8 mHeaderIndex = 10;
25
26
27 VOID
PrintHeader(CHAR8 Char)28 PrintHeader (
29 CHAR8 Char
30 )
31 {
32 *(UINT8 *)(UINTN)(0x000b8000 + mHeaderIndex) = Char;
33 mHeaderIndex += 2;
34 }
35
36 VOID
ClearScreen(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
PrintString(IN CONST CHAR8 * FormatString,...)52 PrintString (
53 IN CONST CHAR8 *FormatString,
54 ...
55 )
56 {
57 UINTN Index;
58 CHAR8 PrintBuffer[256];
59 VA_LIST Marker;
60
61 VA_START (Marker, FormatString);
62 AsciiVSPrint (PrintBuffer, sizeof (PrintBuffer), FormatString, Marker);
63 VA_END (Marker);
64
65 for (Index = 0; PrintBuffer[Index] != 0; Index++) {
66 if (PrintBuffer[Index] == '\n') {
67 mCursor = (UINT8 *) (UINTN) (0xb8000 + (((((UINTN)mCursor - 0xb8000) + 160) / 160) * 160));
68 } else {
69 *mCursor = (UINT8) PrintBuffer[Index];
70 mCursor += 2;
71 }
72 }
73
74 //
75 // All information also output to serial port.
76 //
77 SerialPortWrite ((UINT8 *) PrintBuffer, Index);
78 }
79
80