What are the PCDs settings you are using for the SerialPortLib? Thanks,
Mike > -----Original Message----- > From: edk2-devel [mailto:edk2-devel-boun...@lists.01.org] > On Behalf Of Jacob Burkholder > Sent: Tuesday, March 19, 2019 7:06 PM > To: edk2-devel@lists.01.org > Subject: [edk2] SerialDxe with BaseSerialPortLib16550 and > standard PC com port > > Greetings! > > I had trouble using SerialDxe.efi with > BaseSerialPortLib16550 on a standard > PC com port (com1). The PC is an asrock motherboard > running whatever EFI > bios it came with. I changed MdeModulePkg.dsc so that > BaseSerialPortLib16550 would be used instead of > BaseSerialPortLibNull and > then rebuilt SerialDxe.efi and loaded and started it > using > BootServices->{LoadImage,StartImage}. > > Output works but input doesn't work, typed characters > aren't received by > the uart. I looked at the code briefly and it seems like > the uart isn't > initialized properly. I used this script to get input > working (the > commands should be self explanatory, they're not efi > shell commands though): > > image SerialDxe.efi > outb 0x3fb 0x83 > outw 0x3f8 1 > outb 0x3fb 0x3 > outb 0x3fc 0x3 > > Any chance it can be fixed upstream? > > Thanks, > > Jake > _______________________________________________ > edk2-devel mailing list > edk2-devel@lists.01.org > https://lists.01.org/mailman/listinfo/edk2-devel _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
