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https://github.com/reactos/reactos.git
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Improved debug output and
added hal READ_XXX and WRITE_XXX functions. svn path=/trunk/; revision=717
This commit is contained in:
Eric Kohl
parent
7228dc135c
commit
e6f624f0e7
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@ -1,26 +1,291 @@
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/* $Id: kdbg.c,v 1.1 1999/09/05 20:54:57 ea Exp $
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*
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* reactos/ntoskrnl/hal/x86/kdbg.c
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/* $Id: kdbg.c,v 1.2 1999/10/21 13:00:09 ekohl Exp $
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*
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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/hal/x86/kdbg.c
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* PURPOSE: Serial i/o functions for the kernel debugger.
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* PROGRAMMER: Emanuele Aliberti
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* UPDATE HISTORY:
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* Created 05/09/99
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*/
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/* INCLUDES *****************************************************************/
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#include <ntos.h>
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#include <ddk/ntddk.h>
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#include <internal/debug.h>
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#define DEFAULT_BAUD_RATE 19200
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//#define DEFAULT_COM_PORT 2
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//#define DEFAULT_BASE_ADDRESS 0x2F8
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#define DEFAULT_COM_PORT 1
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#define DEFAULT_BASE_ADDRESS 0x3F8
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/* MACROS *******************************************************************/
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#define SER_RBR(x) ((x)+0)
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#define SER_THR(x) ((x)+0)
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#define SER_DLL(x) ((x)+0)
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#define SER_IER(x) ((x)+1)
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#define SER_DLM(x) ((x)+1)
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#define SER_IIR(x) ((x)+2)
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#define SER_LCR(x) ((x)+3)
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#define SR_LCR_CS5 0x00
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#define SR_LCR_CS6 0x01
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#define SR_LCR_CS7 0x02
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#define SR_LCR_CS8 0x03
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#define SR_LCR_ST1 0x00
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#define SR_LCR_ST2 0x04
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#define SR_LCR_PNO 0x00
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#define SR_LCR_POD 0x08
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#define SR_LCR_PEV 0x18
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#define SR_LCR_PMK 0x28
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#define SR_LCR_PSP 0x38
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#define SR_LCR_BRK 0x40
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#define SR_LCR_DLAB 0x80
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#define SER_MCR(x) ((x)+4)
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#define SR_MCR_DTR 0x01
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#define SR_MCR_RTS 0x02
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#define SER_LSR(x) ((x)+5)
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#define SR_LSR_TBE 0x20
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#define SER_MSR(x) ((x)+6)
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#define SR_MSR_CTS 0x10
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#define SR_MSR_DSR 0x20
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#define SER_SCR(x) ((x)+7)
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/* GLOBAL VARIABLES *********************************************************/
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ULONG KdComPortInUse = 0;
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/* STATIC VARIABLES *********************************************************/
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static ULONG ComPort = 0;
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static ULONG BaudRate = 0;
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static PUCHAR PortBase = (PUCHAR)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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/* STATIC FUNCTIONS *********************************************************/
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static BOOLEAN
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KdDoesComPortExist (PUCHAR BaseAddress)
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{
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BOOLEAN found;
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BYTE mcr;
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BYTE msr;
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found = FALSE;
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/* save Modem Control Register (MCR) */
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mcr = READ_PORT_UCHAR (SER_MCR(BaseAddress));
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/* enable loop mode (set Bit 4 of the MCR) */
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WRITE_PORT_UCHAR (SER_MCR(BaseAddress), 0x10);
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/* clear all modem output bits */
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WRITE_PORT_UCHAR (SER_MCR(BaseAddress), 0x10);
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/* read the Modem Status Register */
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msr = READ_PORT_UCHAR (SER_MSR(BaseAddress));
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/*
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* the upper nibble of the MSR (modem output bits) must be
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* equal to the lower nibble of the MCR (modem input bits)
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*/
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if ((msr & 0xF0) == 0x00)
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{
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/* set all modem output bits */
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WRITE_PORT_UCHAR (SER_MCR(BaseAddress), 0x1F);
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/* read the Modem Status Register */
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msr = READ_PORT_UCHAR (SER_MSR(BaseAddress));
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/*
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* the upper nibble of the MSR (modem output bits) must be
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* equal to the lower nibble of the MCR (modem input bits)
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*/
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if ((msr & 0xF0) == 0xF0)
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found = TRUE;
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}
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/* restore MCR */
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WRITE_PORT_UCHAR (SER_MCR(BaseAddress), mcr);
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return (found);
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}
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/* FUNCTIONS ****************************************************************/
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/* HAL.KdPortInitialize */
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BOOLEAN
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STDCALL
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KdPortInitialize (
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DWORD Unknown0,
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DWORD Unknown1,
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DWORD Unknown2
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)
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PKD_PORT_INFORMATION PortInformation,
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DWORD Unknown1,
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DWORD Unknown2
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)
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{
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return FALSE;
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ULONG BaseArray[5] = {0, 0x3F8, 0x2F8, 3E8, 2E8};
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char buffer[80];
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ULONG divisor;
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BYTE lcr;
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if (PortInitialized == FALSE)
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{
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if (PortInformation->BaudRate != 0)
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{
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BaudRate = PortInformation->BaudRate;
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}
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else
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{
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BaudRate = DEFAULT_BAUD_RATE;
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}
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if (PortInformation->ComPort == 0)
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{
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if (KdDoesComPortExist ((PUCHAR)BaseArray[2]))
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{
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PortBase = (PUCHAR)BaseArray[2];
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ComPort = 2;
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#ifndef NDEBUG
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sprintf (buffer,
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"\nSerial port COM%ld found at 0x%lx\n",
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ComPort,
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(ULONG)PortBase);
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HalDisplayString (buffer);
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#endif
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}
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else if (KdDoesComPortExist ((PUCHAR)BaseArray[1]))
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{
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PortBase = (PUCHAR)BaseArray[1];
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ComPort = 1;
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#ifndef NDEBUG
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sprintf (buffer,
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"\nSerial port COM%ld found at 0x%lx\n",
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ComPort,
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(ULONG)PortBase);
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HalDisplayString (buffer);
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#endif
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}
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else
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{
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sprintf (buffer,
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"\nKernel Debugger: No COM port found!!!\n\n");
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HalDisplayString (buffer);
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return FALSE;
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}
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}
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else
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{
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if (KdDoesComPortExist ((PUCHAR)BaseArray[PortInformation->ComPort]))
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{
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PortBase = (PUCHAR)BaseArray[PortInformation->ComPort];
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ComPort = PortInformation->ComPort;
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#ifndef NDEBUG
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sprintf (buffer,
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"\nSerial port COM%ld found at 0x%lx\n",
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ComPort,
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(ULONG)PortBase);
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HalDisplayString (buffer);
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#endif
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}
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else
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{
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sprintf (buffer,
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"\nKernel Debugger: No serial port found!!!\n\n");
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HalDisplayString (buffer);
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return FALSE;
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}
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}
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/*
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if (KdDoesComPortExist ((PUCHAR)BaseArray[2]))
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{
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PortBase = (PUCHAR)BaseArray[2];
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ComPort = 2;
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sprintf (buffer,
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"\nCOM port found at 0x%lx\n",
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(ULONG)PortBase);
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HalDisplayString (buffer);
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}
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else if (KdDoesComPortExist ((PUCHAR)BaseArray[1]))
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{
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PortBase = (PUCHAR)BaseArray[1];
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ComPort = 1;
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sprintf (buffer,
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"\nCOM port found at 0x%lx\n",
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(ULONG)PortBase);
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HalDisplayString (buffer);
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}
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else
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{
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sprintf (buffer,
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"\nKernel Debugger: No COM port found!!!\n");
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HalDisplayString (buffer);
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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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/*
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* set baud rate and data format (8N1)
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*/
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/* turn on DTR and RTS */
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WRITE_PORT_UCHAR (SER_MCR(PortBase), SR_MCR_DTR | SR_MCR_RTS);
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/* set DLAB */
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lcr = READ_PORT_UCHAR (SER_LCR(PortBase)) | SR_LCR_DLAB;
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WRITE_PORT_UCHAR (SER_LCR(PortBase), lcr);
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/* set baud rate */
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divisor = 115200 / BaudRate;
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WRITE_PORT_UCHAR (SER_DLL(PortBase), divisor & 0xff);
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WRITE_PORT_UCHAR (SER_DLM(PortBase), (divisor >> 8) & 0xff);
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/* reset DLAB and set 8N1 format */
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WRITE_PORT_UCHAR (SER_LCR(PortBase),
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SR_LCR_CS8 | SR_LCR_ST1 | SR_LCR_PNO);
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/* read junk out of the RBR */
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lcr = READ_PORT_UCHAR (SER_RBR(PortBase));
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/*
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* set global info
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*/
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KdComPortInUse = (ULONG)PortBase;
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/*
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* print message to blue screen
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*/
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sprintf (buffer,
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"\nKernel Debugger using: COM%ld (Port 0x%lx) BaudRate %ld\n\n",
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ComPort,
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(ULONG)PortBase,
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BaudRate);
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HalDisplayString (buffer);
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return TRUE;
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}
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@ -31,6 +296,10 @@ KdPortGetByte (
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VOID
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)
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{
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if (PortInitialized == FALSE)
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return 0;
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return (BYTE) 0;
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}
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@ -45,13 +314,21 @@ KdPortPollByte (
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return (BYTE) 0;
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}
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/* HAL.KdPortPutByte */
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VOID
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STDCALL
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KdPortPutByte (
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BYTE ByteToSend
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UCHAR ByteToSend
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)
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{
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if (PortInitialized == FALSE)
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return;
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while ((READ_PORT_UCHAR (SER_LSR(PortBase)) & SR_LSR_TBE) == 0)
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;
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WRITE_PORT_UCHAR (SER_THR(PortBase), ByteToSend);
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}
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116
reactos/ntoskrnl/hal/x86/portio.c
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116
reactos/ntoskrnl/hal/x86/portio.c
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@ -0,0 +1,116 @@
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/* $Id: portio.c,v 1.1 1999/10/21 13:00:09 ekohl Exp $
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*
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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/hal/x86/portio.c
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* PURPOSE: Port I/O functions
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* PROGRAMMER: Eric Kohl (ekohl@abo.rhein-zeitung.de)
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* UPDATE HISTORY:
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* Created 18/10/99
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*/
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#include <ddk/ntddk.h>
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#include <internal/halio.h>
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/* FUNCTIONS ****************************************************************/
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VOID
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READ_PORT_BUFFER_UCHAR (PUCHAR Port,
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PUCHAR Buffer,
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ULONG Count)
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{
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insb ((ULONG)Port, Buffer, Count);
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}
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VOID
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READ_PORT_BUFFER_ULONG (PULONG Port,
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PULONG Buffer,
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ULONG Count)
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{
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insl ((ULONG)Port, Buffer, Count);
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}
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VOID
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READ_PORT_BUFFER_USHORT (PUSHORT Port,
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PUSHORT Buffer,
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ULONG Count)
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{
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insw ((ULONG)Port, Buffer, Count);
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}
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UCHAR
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READ_PORT_UCHAR (PUCHAR Port)
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{
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return inb_p ((ULONG)Port);
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}
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ULONG
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READ_PORT_ULONG (PULONG Port)
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{
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return inl_p ((ULONG)Port);
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}
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USHORT
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READ_PORT_USHORT (PUSHORT Port)
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{
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return inw_p ((ULONG)Port);
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}
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VOID
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WRITE_PORT_BUFFER_UCHAR (PUCHAR Port,
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PUCHAR Buffer,
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ULONG Count)
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{
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outsb ((ULONG)Port, Buffer, Count);
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}
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VOID
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WRITE_PORT_BUFFER_ULONG (PULONG Port,
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PULONG Buffer,
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ULONG Count)
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{
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outsl ((ULONG)Port, Buffer, Count);
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}
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VOID
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WRITE_PORT_BUFFER_USHORT (PUSHORT Port,
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PUSHORT Buffer,
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ULONG Count)
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{
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outsw ((ULONG)Port, Buffer, Count);
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}
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VOID
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WRITE_PORT_UCHAR (PUCHAR Port,
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UCHAR Value)
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{
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outb_p ((ULONG)Port, Value);
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}
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VOID
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WRITE_PORT_ULONG (PULONG Port,
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ULONG Value)
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{
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outl_p ((ULONG)Port, Value);
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}
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VOID
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WRITE_PORT_USHORT (PUSHORT Port,
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USHORT Value)
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{
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outw_p ((ULONG)Port, Value);
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}
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/* EOF */
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@ -3,5 +3,5 @@ HAL_OBJECTS = hal/x86/head.o hal/x86/irq.o hal/x86/exp.o hal/x86/isa.o \
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hal/x86/irql.o hal/x86/bios32.o hal/x86/thread.o hal/x86/spinlock.o \
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hal/x86/mp.o hal/x86/dma.o hal/x86/bus.o hal/x86/mbr.o \
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hal/x86/sysinfo.o hal/x86/time.o hal/x86/usercall.o hal/x86/beep.o \
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hal/x86/display.o hal/x86/reboot.o
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hal/x86/display.o hal/x86/reboot.o hal/x86/kdbg.o hal/x86/portio.o
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