xt-sys/exectos
3
5
Fork 3
Code Issues 3 Pull Requests 1 Actions Projects 1 Releases Wiki Activity

Allow to provide custom COM port address
All checks were successful
ci/woodpecker/push/build Pipeline was successful
Details

Browse Source
This commit is contained in:
Rafal Kupiec
2022-12-29 23:44:52 +01:00
parent feabac2d98
commit 94e9fa1293
3 changed files with 55 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
xtldr/efiutil.c
View File

@@ -22,12 +22,13 @@ BlComPortInitialize()
{
EFI_GUID LIPGuid = EFI_LOADED_IMAGE_PROTOCOL_GUID;
PEFI_LOADED_IMAGE_PROTOCOL LoadedImage;
ULONG PortNumber, BaudRate;
ULONG PortAddress, PortNumber, BaudRate;
PWCHAR Argument, CommandLine, LastArg;
EFI_STATUS EfiStatus;
XTSTATUS Status;
/* Set default serial port options */
PortAddress = 0;
PortNumber = 0;
BaudRate = 0;
@@ -72,6 +73,37 @@ BlComPortInitialize()
Argument++;
}
/* Check for some custom COM port (COM0 means non-default one) */
if(PortNumber == 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'))
{
/* 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++;
}
}
}
/* Look for additional COM port parameters */
if(*Argument == ',')
{
@@ -97,7 +129,7 @@ BlComPortInitialize()
}
/* Initialize COM port */
Status = HlInitializeComPort(&EfiSerialPort, PortNumber, BaudRate);
Status = HlInitializeComPort(&EfiSerialPort, PortNumber, UlongToPtr(PortAddress), BaudRate);
if(Status != STATUS_SUCCESS)
{
/* Serial port initialization failed, mark as not ready */