#ifndef _M_ARM
#include <freeldr.h>
+#include <cportlib/cportlib.h>
/* MACROS *******************************************************************/
#if DBG
-#define DEFAULT_BAUD_RATE 19200
+#define DEFAULT_BAUD_RATE 19200
-#define SER_RBR(x) ((x)+0)
-#define SER_THR(x) ((x)+0)
-#define SER_DLL(x) ((x)+0)
-#define SER_IER(x) ((x)+1)
-#define SER_DLM(x) ((x)+1)
-#define SER_IIR(x) ((x)+2)
-#define SER_LCR(x) ((x)+3)
-#define SR_LCR_CS5 0x00
-#define SR_LCR_CS6 0x01
-#define SR_LCR_CS7 0x02
-#define SR_LCR_CS8 0x03
-#define SR_LCR_ST1 0x00
-#define SR_LCR_ST2 0x04
-#define SR_LCR_PNO 0x00
-#define SR_LCR_POD 0x08
-#define SR_LCR_PEV 0x18
-#define SR_LCR_PMK 0x28
-#define SR_LCR_PSP 0x38
-#define SR_LCR_BRK 0x40
-#define SR_LCR_DLAB 0x80
-#define SER_MCR(x) ((x)+4)
-#define SR_MCR_DTR 0x01
-#define SR_MCR_RTS 0x02
-#define SER_LSR(x) ((x)+5)
-#define SR_LSR_DR 0x01
-#define SR_LSR_TBE 0x20
-#define SER_MSR(x) ((x)+6)
-#define SR_MSR_CTS 0x10
-#define SR_MSR_DSR 0x20
-#define SER_SCR(x) ((x)+7)
/* STATIC VARIABLES *********************************************************/
-static ULONG Rs232ComPort = 0;
-static ULONG Rs232BaudRate = 0;
-static PUCHAR Rs232PortBase = (PUCHAR)0;
+static ULONG BaseArray[] = {0, 0x3F8, 0x2F8, 0x3E8, 0x2E8};
-/* The com port must only be initialized once! */
+/* The COM port must only be initialized once! */
+static CPPORT Rs232ComPort;
static BOOLEAN PortInitialized = FALSE;
-/* STATIC FUNCTIONS *********************************************************/
-
-static BOOLEAN Rs232DoesComPortExist(PUCHAR BaseAddress)
-{
- BOOLEAN found;
- UCHAR mcr;
- UCHAR msr;
-
- found = FALSE;
-
- /* save Modem Control Register (MCR) */
- mcr = READ_PORT_UCHAR (SER_MCR(BaseAddress));
-
- /* enable loop mode (set Bit 4 of the MCR) */
- WRITE_PORT_UCHAR (SER_MCR(BaseAddress), 0x10);
-
- /* clear all modem output bits */
- WRITE_PORT_UCHAR (SER_MCR(BaseAddress), 0x10);
-
- /* read the Modem Status Register */
- msr = READ_PORT_UCHAR (SER_MSR(BaseAddress));
-
- /*
- * the upper nibble of the MSR (modem output bits) must be
- * equal to the lower nibble of the MCR (modem input bits)
- */
- if ((msr & 0xF0) == 0x00)
- {
- /* set all modem output bits */
- WRITE_PORT_UCHAR (SER_MCR(BaseAddress), 0x1F);
-
- /* read the Modem Status Register */
- msr = READ_PORT_UCHAR (SER_MSR(BaseAddress));
-
- /*
- * the upper nibble of the MSR (modem output bits) must be
- * equal to the lower nibble of the MCR (modem input bits)
- */
- if ((msr & 0xF0) == 0xF0)
- found = TRUE;
- }
-
- /* restore MCR */
- WRITE_PORT_UCHAR (SER_MCR(BaseAddress), mcr);
-
- return (found);
-}
/* FUNCTIONS *********************************************************/
-BOOLEAN Rs232PortInitialize(ULONG ComPort, ULONG BaudRate)
+BOOLEAN Rs232PortInitialize(IN ULONG ComPort,
+ IN ULONG BaudRate)
{
- ULONG BaseArray[5] = {0, 0x3F8, 0x2F8, 0x3E8, 0x2E8};
- //char buffer[80];
- ULONG divisor;
- UCHAR lcr;
+ NTSTATUS Status;
+ PUCHAR Address;
- if (PortInitialized == FALSE)
+ if (PortInitialized == FALSE)
+ {
+ if (BaudRate == 0)
{
- if (BaudRate != 0)
- {
- Rs232BaudRate = BaudRate;
- }
- else
- {
- Rs232BaudRate = DEFAULT_BAUD_RATE;
- }
-
- if (ComPort == 0)
- {
- if (Rs232DoesComPortExist ((PUCHAR)(ULONG_PTR)BaseArray[2]))
- {
- Rs232PortBase = (PUCHAR)(ULONG_PTR)BaseArray[2];
- Rs232ComPort = 2;
-/*#ifndef NDEBUG
- sprintf (buffer,
- "\nSerial port COM%ld found at 0x%lx\n",
- ComPort,
- (ULONG)PortBase);
- HalDisplayString (buffer);
-#endif*/ /* NDEBUG */
- }
- else if (Rs232DoesComPortExist ((PUCHAR)(ULONG_PTR)BaseArray[1]))
- {
- Rs232PortBase = (PUCHAR)(ULONG_PTR)BaseArray[1];
- Rs232ComPort = 1;
-/*#ifndef NDEBUG
- sprintf (buffer,
- "\nSerial port COM%ld found at 0x%lx\n",
- ComPort,
- (ULONG)PortBase);
- HalDisplayString (buffer);
-#endif*/ /* NDEBUG */
- }
- else
- {
- /*sprintf (buffer,
- "\nKernel Debugger: No COM port found!!!\n\n");
- HalDisplayString (buffer);*/
- return FALSE;
- }
- }
- else
- {
- if (Rs232DoesComPortExist ((PUCHAR)(ULONG_PTR)BaseArray[ComPort]))
- {
- Rs232PortBase = (PUCHAR)(ULONG_PTR)BaseArray[ComPort];
- Rs232ComPort = ComPort;
-/*#ifndef NDEBUG
- sprintf (buffer,
- "\nSerial port COM%ld found at 0x%lx\n",
- ComPort,
- (ULONG)PortBase);
- HalDisplayString (buffer);
-#endif*/ /* NDEBUG */
- }
- else
- {
- /*sprintf (buffer,
- "\nKernel Debugger: No serial port found!!!\n\n");
- HalDisplayString (buffer);*/
- return FALSE;
- }
- }
-
- PortInitialized = TRUE;
+ BaudRate = DEFAULT_BAUD_RATE;
}
- /*
- * set baud rate and data format (8N1)
- */
-
- /* turn on DTR and RTS */
- WRITE_PORT_UCHAR (SER_MCR(Rs232PortBase), SR_MCR_DTR | SR_MCR_RTS);
-
- /* set DLAB */
- lcr = READ_PORT_UCHAR (SER_LCR(Rs232PortBase)) | SR_LCR_DLAB;
- WRITE_PORT_UCHAR (SER_LCR(Rs232PortBase), lcr);
-
- /* set baud rate */
- divisor = 115200 / BaudRate;
- WRITE_PORT_UCHAR (SER_DLL(Rs232PortBase), divisor & 0xff);
- WRITE_PORT_UCHAR (SER_DLM(Rs232PortBase), (divisor >> 8) & 0xff);
-
- /* reset DLAB and set 8N1 format */
- WRITE_PORT_UCHAR (SER_LCR(Rs232PortBase),
- SR_LCR_CS8 | SR_LCR_ST1 | SR_LCR_PNO);
-
- /* read junk out of the RBR */
- lcr = READ_PORT_UCHAR (SER_RBR(Rs232PortBase));
-
- /*
- * set global info
- */
- //KdComPortInUse = (ULONG)PortBase;
+ if (ComPort == 0)
+ {
+ if (CpDoesPortExist(UlongToPtr(BaseArray[2])))
+ {
+ Address = UlongToPtr(BaseArray[2]);
+ }
+ else if (CpDoesPortExist(UlongToPtr(BaseArray[1])))
+ {
+ Address = UlongToPtr(BaseArray[1]);
+ }
+ else
+ {
+ return FALSE;
+ }
+ }
+ else if (ComPort <= 4) // 4 == MAX_COM_PORTS
+ {
+ if (CpDoesPortExist(UlongToPtr(BaseArray[ComPort])))
+ {
+ Address = UlongToPtr(BaseArray[ComPort]);
+ }
+ else
+ {
+ return FALSE;
+ }
+ }
+ else
+ {
+ return FALSE;
+ }
- /*
- * print message to blue screen
- */
- /*sprintf (buffer,
- "\nKernel Debugger: COM%ld (Port 0x%lx) BaudRate %ld\n\n",
- ComPort,
- (ULONG)PortBase,
- BaudRate);
+ Status = CpInitialize(&Rs232ComPort, Address, BaudRate);
+ if (!NT_SUCCESS(Status)) return FALSE;
- HalDisplayString (buffer);*/
+ PortInitialized = TRUE;
+ }
- return TRUE;
+ return TRUE;
}
-BOOLEAN Rs232PortGetByte(PUCHAR ByteRecieved)
+BOOLEAN Rs232PortGetByte(PUCHAR ByteReceived)
{
- if (PortInitialized == FALSE)
- return FALSE;
-
- if ((READ_PORT_UCHAR (SER_LSR(Rs232PortBase)) & SR_LSR_DR))
- {
- *ByteRecieved = READ_PORT_UCHAR (SER_RBR(Rs232PortBase));
- return TRUE;
- }
+ if (PortInitialized == FALSE)
+ return FALSE;
- return FALSE;
+ return (CpGetByte(&Rs232ComPort, ByteReceived, TRUE, FALSE) == CP_GET_SUCCESS);
}
-BOOLEAN Rs232PortPollByte(PUCHAR ByteRecieved)
+/*
+BOOLEAN Rs232PortPollByte(PUCHAR ByteReceived)
{
- if (PortInitialized == FALSE)
- return FALSE;
-
- while ((READ_PORT_UCHAR (SER_LSR(Rs232PortBase)) & SR_LSR_DR) == 0)
- ;
+ if (PortInitialized == FALSE)
+ return FALSE;
- *ByteRecieved = READ_PORT_UCHAR (SER_RBR(Rs232PortBase));
-
- return TRUE;
+ return (CpGetByte(&Rs232ComPort, ByteReceived, FALSE) == CP_GET_SUCCESS);
}
+*/
VOID Rs232PortPutByte(UCHAR ByteToSend)
{
- if (PortInitialized == FALSE)
- return;
-
- while ((READ_PORT_UCHAR (SER_LSR(Rs232PortBase)) & SR_LSR_TBE) == 0)
- ;
+ if (PortInitialized == FALSE)
+ return;
- WRITE_PORT_UCHAR (SER_THR(Rs232PortBase), ByteToSend);
+ CpPutByte(&Rs232ComPort, ByteToSend);
}
#endif /* DBG */
-BOOLEAN Rs232PortInUse(ULONG Base)
+BOOLEAN Rs232PortInUse(PUCHAR Base)
{
#if DBG
- return PortInitialized && Rs232PortBase == (PUCHAR)(ULONG_PTR)Base ? TRUE : FALSE;
+ return ( (PortInitialized && (Rs232ComPort.Address == Base)) ? TRUE : FALSE );
#else
return FALSE;
#endif
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