ntoskrnl/kd/i386/kdbg.c

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS kernel
   4  * FILE:            drivers/base/kdcom/kdbg.c
   5  * PURPOSE:         Serial i/o functions for the kernel debugger.
   6  * PROGRAMMER:      Alex Ionescu
   7  *                  Hervé Poussineau
   8  */
   9
  10 /* INCLUDES *****************************************************************/
  11
  12 #include <ntoskrnl.h>
  13 #define NDEBUG
  14 #include <debug.h>
  15
  16
  17 #define DEFAULT_BAUD_RATE   19200
  18
  19 #if defined(_M_IX86) || defined(_M_AMD64)
  20 const ULONG BaseArray[] = {0, 0x3F8, 0x2F8, 0x3E8, 0x2E8};
  21 #elif defined(_M_PPC)
  22 const ULONG BaseArray[] = {0, 0x800003F8};
  23 #elif defined(_M_MIPS)
  24 const ULONG BaseArray[] = {0, 0x80006000, 0x80007000};
  25 #elif defined(_M_ARM)
  26 const ULONG BaseArray[] = {0, 0xF1012000};
  27 #else
  28 #error Unknown architecture
  29 #endif
  30
  31 /* STATIC VARIABLES ***********************************************************/
  32
  33 // static CPPORT DefaultPort = {0, 0, 0};
  34
  35 /* The COM port must only be initialized once! */
  36 // static BOOLEAN PortInitialized = FALSE;
  37
  38
  39 /* REACTOS FUNCTIONS **********************************************************/
  40
  41 NTSTATUS
  42 NTAPI
  43 KdDebuggerInitialize1(
  44     IN PLOADER_PARAMETER_BLOCK LoaderBlock OPTIONAL)
  45 {
  46     return STATUS_NOT_IMPLEMENTED;
  47 }
  48
  49 BOOLEAN
  50 NTAPI
  51 KdPortInitializeEx(
  52     IN PCPPORT PortInformation,
  53     IN ULONG ComPortNumber)
  54 {
  55     NTSTATUS Status;
  56
  57 #if 0 // Deactivated because never used in fact (was in KdPortInitialize but we use KdPortInitializeEx)
  58     /*
  59      * Find the port if needed
  60      */
  61     SIZE_T i;
  62
  63     if (!PortInitialized)
  64     {
  65         DefaultPort.BaudRate = PortInformation->BaudRate;
  66
  67         if (ComPortNumber == 0)
  68         {
  69             /*
  70              * Start enumerating COM ports from the last one to the first one,
  71              * and break when we find a valid port.
  72              * If we reach the first element of the list, the invalid COM port,
  73              * then it means that no valid port was found.
  74              */
  75             for (i = sizeof(BaseArray) / sizeof(BaseArray[0]) - 1; i > 0; i--)
  76             {
  77                 if (CpDoesPortExist(UlongToPtr(BaseArray[i])))
  78                 {
  79                     PortInformation->Address = DefaultPort.Address = BaseArray[i];
  80                     ComPortNumber = (ULONG)i;
  81                     break;
  82                 }
  83             }
  84             if (ComPortNumber == 0)
  85             {
  86                 HalDisplayString("\r\nKernel Debugger: No COM port found!\r\n\r\n");
  87                 return FALSE;
  88             }
  89         }
  90
  91         PortInitialized = TRUE;
  92     }
  93 #endif
  94
  95     /*
  96      * Initialize the port
  97      */
  98     Status = CpInitialize(PortInformation,
  99                           (ComPortNumber == 0 ? PortInformation->Address
 100                                               : UlongToPtr(BaseArray[ComPortNumber])),
 101                           (PortInformation->BaudRate == 0 ? DEFAULT_BAUD_RATE
 102                                                           : PortInformation->BaudRate));
 103     if (!NT_SUCCESS(Status))
 104     {
 105         HalDisplayString("\r\nKernel Debugger: Serial port not found!\r\n\r\n");
 106         return FALSE;
 107     }
 108     else
 109     {
 110 #ifndef NDEBUG
 111         CHAR buffer[80];
 112
 113         /* Print message to blue screen */
 114         sprintf(buffer,
 115                 "\r\nKernel Debugger: Serial port found: COM%ld (Port 0x%lx) BaudRate %ld\r\n\r\n",
 116                 ComPortNumber,
 117                 PortInformation->Address,
 118                 PortInformation->BaudRate);
 119         HalDisplayString(buffer);
 120 #endif /* NDEBUG */
 121
 122 #if 0
 123         /* Set global info */
 124         KdComPortInUse = DefaultPort.Address;
 125 #endif
 126         return TRUE;
 127     }
 128 }
 129
 130 BOOLEAN
 131 NTAPI
 132 KdPortGetByteEx(
 133     IN PCPPORT PortInformation,
 134     OUT PUCHAR ByteReceived)
 135 {
 136     return (CpGetByte(PortInformation, ByteReceived, FALSE, FALSE) == CP_GET_SUCCESS);
 137 }
 138
 139 VOID
 140 NTAPI
 141 KdPortPutByteEx(
 142     IN PCPPORT PortInformation,
 143     IN UCHAR ByteToSend)
 144 {
 145     CpPutByte(PortInformation, ByteToSend);
 146 }
 147
 148 /* EOF */