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Improvements in COM port support
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This commit is contained in:
Rafal Kupiec
2023-01-02 16:14:00 +01:00
parent e8e7d7b905
commit c5a7d0fe05
4 changed files with 88 additions and 84 deletions
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54
xtldr/efiutil.c
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@@ -73,34 +73,30 @@ BlComPortInitialize()
Argument++;
}
/* Check for some custom COM port (COM0 means non-default one) */
if(PortNumber == 0)
/* Check if custom COM port address supplied */
if(PortNumber == 0 && RtlWideStringCompare(Argument, L":0x", 3) == 0)
{
/* Look for COM port address */
if(RtlWideStringCompare(Argument, L",0x", 3) == 0)
/* COM port address provided */
Argument += 3;
while((*Argument >= '0' && *Argument <= '9') ||
(*Argument >= 'A' && *Argument <= 'F') ||
(*Argument >= 'a' && *Argument <= 'f'))
{
/* COM port address provided */
Argument += 3;
while((*Argument >= '0' && *Argument <= '9') ||
(*Argument >= 'A' && *Argument <= 'F') ||
(*Argument >= 'a' && *Argument <= 'f'))
/* Get port address */
PortAddress *= 16;
if(*Argument >= '0' && *Argument <= '9')
{
/* Get port address */
PortAddress *= 16;
if(*Argument >= '0' && *Argument <= '9')
{
PortAddress += *Argument - '0';
}
else if(*Argument >= 'A' && *Argument <= 'F')
{
PortAddress += *Argument - 'A' + 10;
}
else if(*Argument >= 'a' && *Argument <= 'f')
{
PortAddress += *Argument - 'a' + 10;
}
Argument++;
PortAddress += *Argument - '0';
}
else if(*Argument >= 'A' && *Argument <= 'F')
{
PortAddress += *Argument - 'A' + 10;
}
else if(*Argument >= 'a' && *Argument <= 'f')
{
PortAddress += *Argument - 'a' + 10;
}
Argument++;
}
}
@@ -128,6 +124,16 @@ BlComPortInitialize()
}
}
/* Print debug message depending on port settings */
if(PortAddress)
{
BlEfiPrint(L"Initializing serial console at COM port address: %lx\n", PortAddress);
}
else
{
BlEfiPrint(L"Initializing serial console at port COM%d\n", PortNumber);
}
/* Initialize COM port */
Status = HlInitializeComPort(&EfiSerialPort, PortNumber, UlongToPtr(PortAddress), BaudRate);
if(Status != STATUS_SUCCESS)