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4501bbac8f
According to PC-9801 Bible p. 50, divisor for PIT will become unsupported in some cases after having removed the fractional part. Replace 19200 value with 9600 which is supported by both 10 MHz and 8 MHz machines.
155 lines
4 KiB
C
155 lines
4 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* FILE: ntoskrnl/kd/i386/kdbg.c
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* PURPOSE: Serial i/o functions for the kernel debugger.
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* PROGRAMMER: Alex Ionescu
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* Hervé Poussineau
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*/
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/* INCLUDES *****************************************************************/
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#include <ntoskrnl.h>
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#define NDEBUG
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#include <debug.h>
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#if defined(SARCH_PC98)
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#define DEFAULT_BAUD_RATE 9600
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#else
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#define DEFAULT_BAUD_RATE 19200
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#endif
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#if defined(_M_IX86) || defined(_M_AMD64)
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#if defined(SARCH_PC98)
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const ULONG BaseArray[] = {0, 0x30, 0x238};
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#else
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const ULONG BaseArray[] = {0, 0x3F8, 0x2F8, 0x3E8, 0x2E8};
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#endif
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#elif defined(_M_PPC)
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const ULONG BaseArray[] = {0, 0x800003F8};
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#elif defined(_M_MIPS)
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const ULONG BaseArray[] = {0, 0x80006000, 0x80007000};
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#elif defined(_M_ARM)
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const ULONG BaseArray[] = {0, 0xF1012000};
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#else
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#error Unknown architecture
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#endif
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#define MAX_COM_PORTS (sizeof(BaseArray) / sizeof(BaseArray[0]) - 1)
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/* STATIC VARIABLES ***********************************************************/
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// static CPPORT DefaultPort = {0, 0, 0};
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/* The COM port must only be initialized once! */
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// static BOOLEAN PortInitialized = FALSE;
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/* REACTOS FUNCTIONS **********************************************************/
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NTSTATUS
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NTAPI
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KdDebuggerInitialize1(
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IN PLOADER_PARAMETER_BLOCK LoaderBlock OPTIONAL)
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{
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return STATUS_NOT_IMPLEMENTED;
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}
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BOOLEAN
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NTAPI
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KdPortInitializeEx(
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IN PCPPORT PortInformation,
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IN ULONG ComPortNumber)
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{
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NTSTATUS Status;
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#if 0 // Deactivated because never used in fact (was in KdPortInitialize but we use KdPortInitializeEx)
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/*
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* Find the port if needed
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*/
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if (!PortInitialized)
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{
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DefaultPort.BaudRate = PortInformation->BaudRate;
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if (ComPortNumber == 0)
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{
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/*
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* Start enumerating COM ports from the last one to the first one,
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* and break when we find a valid port.
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* If we reach the first element of the list, the invalid COM port,
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* then it means that no valid port was found.
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*/
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for (ComPortNumber = MAX_COM_PORTS; ComPortNumber > 0; ComPortNumber--)
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{
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if (CpDoesPortExist(UlongToPtr(BaseArray[ComPortNumber])))
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{
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PortInformation->Address = DefaultPort.Address = BaseArray[ComPortNumber];
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break;
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}
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}
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if (ComPortNumber == 0)
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{
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HalDisplayString("\r\nKernel Debugger: No COM port found!\r\n\r\n");
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return FALSE;
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}
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}
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PortInitialized = TRUE;
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}
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#endif
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/*
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* Initialize the port
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*/
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Status = CpInitialize(PortInformation,
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(ComPortNumber == 0 ? PortInformation->Address
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: UlongToPtr(BaseArray[ComPortNumber])),
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(PortInformation->BaudRate == 0 ? DEFAULT_BAUD_RATE
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: PortInformation->BaudRate));
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if (!NT_SUCCESS(Status))
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{
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HalDisplayString("\r\nKernel Debugger: Serial port not found!\r\n\r\n");
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return FALSE;
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}
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else
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{
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#ifndef NDEBUG
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CHAR buffer[80];
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/* Print message to blue screen */
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sprintf(buffer,
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"\r\nKernel Debugger: Serial port found: COM%ld (Port 0x%p) BaudRate %ld\r\n\r\n",
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ComPortNumber,
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PortInformation->Address,
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PortInformation->BaudRate);
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HalDisplayString(buffer);
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#endif /* NDEBUG */
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#if 0
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/* Set global info */
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KdComPortInUse = DefaultPort.Address;
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#endif
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return TRUE;
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}
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}
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BOOLEAN
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NTAPI
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KdPortGetByteEx(
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IN PCPPORT PortInformation,
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OUT PUCHAR ByteReceived)
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{
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return (CpGetByte(PortInformation, ByteReceived, FALSE, FALSE) == CP_GET_SUCCESS);
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}
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VOID
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NTAPI
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KdPortPutByteEx(
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IN PCPPORT PortInformation,
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IN UCHAR ByteToSend)
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{
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CpPutByte(PortInformation, ByteToSend);
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}
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/* EOF */
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