ReactOS 0.4.15-dev-8127-g6338913
rs232.c
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1/*
2 * FreeLoader
3 * Copyright (C) 2001 Brian Palmer <brianp@sginet.com>
4 * Copyright (C) 2001 Eric Kohl
5 * Copyright (C) 2001 Emanuele Aliberti
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 */
21
22#ifndef _M_ARM
23
24/* INCLUDES *******************************************************************/
25
26#include <freeldr.h>
27#include <cportlib/cportlib.h>
28
29#if DBG
30
31/* STATIC VARIABLES ***********************************************************/
32
33#if defined(SARCH_PC98)
34#define DEFAULT_BAUD_RATE 9600
35#else
36#define DEFAULT_BAUD_RATE 19200
37#endif
38
39#if defined(_M_IX86) || defined(_M_AMD64)
40#if defined(SARCH_PC98)
41static const ULONG BaseArray[] = {0, 0x30, 0x238};
42#else
43static const ULONG BaseArray[] = {0, 0x3F8, 0x2F8, 0x3E8, 0x2E8};
44#endif
45#elif defined(_M_PPC)
46static const ULONG BaseArray[] = {0, 0x800003F8};
47#elif defined(_M_MIPS)
48static const ULONG BaseArray[] = {0, 0x80006000, 0x80007000};
49#elif defined(_M_ARM)
50static const ULONG BaseArray[] = {0, 0xF1012000};
51#else
52#error Unknown architecture
53#endif
54
55#define MAX_COM_PORTS (sizeof(BaseArray) / sizeof(BaseArray[0]) - 1)
56
57/* The COM port must only be initialized once! */
58static ULONG Rs232ComPort = 0;
59static CPPORT Rs232ComPortInfo;
60
61/* FUNCTIONS ******************************************************************/
62
64 IN ULONG BaudRate)
65{
68
69 /*
70 * Check whether it's the first time we initialize a COM port.
71 * If not, check whether the specified one was already initialized.
72 */
73 if ((Rs232ComPort != 0) && (Rs232ComPort == ComPort))
74 return TRUE;
75
76 if (BaudRate == 0)
77 BaudRate = DEFAULT_BAUD_RATE;
78
79 if (ComPort == 0)
80 {
81 /*
82 * Start enumerating COM ports from the last one to the first one,
83 * and break when we find a valid port.
84 * If we reach the first element of the list, the invalid COM port,
85 * then it means that no valid port was found.
86 */
87 for (ComPort = MAX_COM_PORTS; ComPort > 0; ComPort--)
88 {
90 {
91 Address = UlongToPtr(BaseArray[ComPort]);
92 break;
93 }
94 }
95 if (ComPort == 0)
96 return FALSE;
97 }
98 else if (ComPort <= MAX_COM_PORTS)
99 {
100 if (CpDoesPortExist(UlongToPtr(BaseArray[ComPort])))
101 Address = UlongToPtr(BaseArray[ComPort]);
102 else
103 return FALSE;
104 }
105 else
106 {
107 return FALSE;
108 }
109
110 Status = CpInitialize(&Rs232ComPortInfo, Address, BaudRate);
111 if (!NT_SUCCESS(Status)) return FALSE;
112
113 Rs232ComPort = ComPort;
114
115 return TRUE;
116}
117
118BOOLEAN Rs232PortGetByte(PUCHAR ByteReceived)
119{
120 if (Rs232ComPort == 0) return FALSE;
121 return (CpGetByte(&Rs232ComPortInfo, ByteReceived, TRUE, FALSE) == CP_GET_SUCCESS);
122}
123
124/*
125BOOLEAN Rs232PortPollByte(PUCHAR ByteReceived)
126{
127 if (Rs232ComPort == 0) return FALSE;
128 return (CpGetByte(&Rs232ComPortInfo, ByteReceived, FALSE, FALSE) == CP_GET_SUCCESS);
129}
130*/
131
132VOID Rs232PortPutByte(UCHAR ByteToSend)
133{
134 if (Rs232ComPort == 0) return;
135 CpPutByte(&Rs232ComPortInfo, ByteToSend);
136}
137
138#endif /* DBG */
139
141{
142#if DBG
143 return ( ((Rs232ComPort != 0) && (Rs232ComPortInfo.Address == Base)) ? TRUE : FALSE );
144#else
145 return FALSE;
146#endif
147}
148
149#endif /* not _M_ARM */
unsigned char BOOLEAN
LONG NTSTATUS
Definition: precomp.h:26
BOOLEAN Rs232PortInitialize(IN ULONG ComPort, IN ULONG BaudRate)
Definition: debug.c:15
VOID Rs232PortPutByte(UCHAR ByteToSend)
Definition: debug.c:22
BOOLEAN Rs232PortGetByte(PUCHAR ByteReceived)
static struct @4309 Rs232ComPort[]
VOID NTAPI CpPutByte(IN PCPPORT Port, IN UCHAR Byte)
Definition: cport.c:303
NTSTATUS NTAPI CpInitialize(IN PCPPORT Port, IN PUCHAR Address, IN ULONG BaudRate)
Definition: cport.c:85
#define CP_GET_SUCCESS
Definition: cportlib.h:18
USHORT NTAPI CpGetByte(IN PCPPORT Port, OUT PUCHAR Byte, IN BOOLEAN Wait, IN BOOLEAN Poll)
Definition: cport.c:253
BOOLEAN NTAPI CpDoesPortExist(IN PUCHAR Address)
Definition: cport.c:224
#define TRUE
Definition: types.h:120
#define FALSE
Definition: types.h:117
#define NT_SUCCESS(StatCode)
Definition: apphelp.c:32
#define UlongToPtr(u)
Definition: config.h:106
BOOLEAN Rs232PortInUse(PUCHAR Base)
Definition: rs232.c:140
Status
Definition: gdiplustypes.h:25
static const ULONG BaseArray[]
Definition: hwide.c:41
#define DEFAULT_BAUD_RATE
Definition: kdcom.c:29
#define MAX_COM_PORTS
Definition: machpc.c:29
_In_opt_ ULONG Base
Definition: rtlfuncs.h:2439
static WCHAR Address[46]
Definition: ping.c:68
PUCHAR Address
Definition: cportlib.h:29
#define IN
Definition: typedefs.h:39
unsigned char * PUCHAR
Definition: typedefs.h:53
uint32_t ULONG
Definition: typedefs.h:59
unsigned char UCHAR
Definition: xmlstorage.h:181