Hi Ivan,
Thank you for advice, but I want two COM ports. I found LPC_DEV.ASL
ACPI_table in Vlv2TbltDeviceRefCodePkg where was ASL code for the device
IUR3 HID - PNP0501.
Device(IUR3) // Internal UART
{
Name(_HID, EISAID("PNP0501"))
Name(_UID,1)
// Status Method for internal UART
Method(_STA,0,Serialized)
{
// Only report resources to the OS if internal UART is
// not set to Disabled in BIOS Setup.
If(LEqual(USEL,0))
{
If(LEqual(PU1E,1))
{
Store(1,UI3E) // Enable IRQ3 for UART
Store(1,UI4E) // Enable IRQ4 for UART
Store(1,C1EN) // Enable UART
Return(0x000F)
}
}
Return(0x0000)
}
// Disable Method for internal UART
Method(_DIS,0,Serialized)
{
Store(0,UI3E)
Store(0,UI4E)
Store(0,C1EN)
}
// Current Resource Setting Method for internal UART
Method(_CRS,0,Serialized)
{
// Create the Buffer that stores the Resources to
// be returned.
Name(BUF0,ResourceTemplate()
{
IO(Decode16,0x03F8,0x03F8,0x01,0x08)
IRQNoFlags() {3}
})
Name(BUF1,ResourceTemplate()
{
IO(Decode16,0x03F8,0x03F8,0x01,0x08)
IRQNoFlags() {4}
})
If (LLessEqual(SRID, 0x04))
{
Return(BUF0)
} Else
{
Return(BUF1)
}
}
}
I want to make second IUR device. I don't know value of variables : SEL,
PU1E, UI3E, UI4E and C1EN and where it was defined. Also, I would like
to know what I need to change to write ASL code for second IURx device.
Best regards,
Anteja
>On Thu, Jun 25, 2015 at 11:16 AM, Rouzanov, Ivan <ivan.rouza...@intel.com>
wrote:
> >Anteja,
> >
> >As far as I understand we have 2 UARTs but only one follows legacy
> COM-interface and the other one does not so Windows inbox driver serial.sys
> does not work with it so you only have one COM port.
> >(Basically COMx is just a symbolic link serial.sys creates to point to
> its device object, so if it does not service a device like in the case of
> the second HSUART, then it is not a COM-port).
> >f you need to use COM-port and have ability to debug, I'd suggest to use
> Ethernet for debugging and free up COM1 for your other needs.
> >
> >I hope this helps.
> >Best regards,
> >van Rouzanov.
> >
> >
> >
> >Message: 3
> >Date: Wed, 24 Jun 2015 10:06:02 +0200
> >From: Anteja Vuk Macek <anteja...@dolotron.com>
> >To: EDK2 email list <edk2-devel@lists.sourceforge.net>, MinnowMax
> > Community <elinux-minnowbo...@lists.elinux.org>
> >Subject: [MinnowBoard] UART and COM ports problem
> >Message-ID:
> > <
> caoptr2bqg0h5kt8dogxr60t3++i4tchpfchyo6qwqkykqgw...@mail.gmail.com>
> >Content-Type: text/plain; charset="utf-8"
> >
> >Hi all,
> >
> >On MinnowMax I work on Windows 8.1 with UART.
> > In BIOS Setup I enable UART. In LSS & SCC Configuration menu in BIOS
> >Setup I enable : LSS HSUART #1 Support , LSS HSUART #1 FlowCtrl , LSS
> HSUART #2 Support , and LSS HSUART #2 FlowCtrl . But I don't know if I
> need to in BIOS Setup in Miscellaneous configuration set UART >interface
> on Super IO UART, for now I set Internal UART for UART interface.
> >I install Intel driver (
> >
> https://downloadcenter.intel.com/download/24228/Intel-embedded-drivers-for-Windows-8-1-32-bit-
> >)
> >and I got two UART controllers.
> >
> >Problem :
> >Problem is that I have only one COM port ( COM1) and it is for
> debugging. I looking in inf (iaiouart.inf ) file of driver for which
> device is , and I find APCI/INT33BC device. The COM1 is device
> >APCI/PNP0501 .
> >
> >What I need to do to get COM 2 device ? I saw BaseSerialPortLib 16550
> module in MdeModulePkg/Library for what it is this module. Need I add
> some module for UART or Serial port in fdf (PlatformPkg.fdf ) file to get
> >COM2 device, or add COM2 in ACPI_table? Where I can find ACPI_table in
> source of firmware?
> >
> >Best regards,
> >
> >Anteja
> >
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