Seabios isn't able to read from serial, as it would require to map several received characters to scancodes.
You can try sgabios, an option rom that works over serial.
In theory adding serial rx support to Seabios using sgabios source code should be simple.
Regards, Patrick On 2016-05-17 04:01 AM, 김유석 책임연구원 wrote:
Dear Sir.
Thank's your advise. everytime.
FINIALLY, I was succsss the boot using coreboot.
But I have a LITTLE PROBLEM.
I'M CAN'T TYPING THROUTH THE SERIAL.
My x86 BOX is only support serial console.
So, Serial console is very important.
BUT THE SEABIOS IS SERIAL RX IS FAIL. I guess.
Coreboot => TX OK SeaBios => TX OK. RX FAIL GRUB2 => TX OK, RX OK. Linux(ubuntu 15.04) => TX OK, RX OK.TX OK => Can see the log message throught the serial console.
RX FAIL => Can not typing throught the serial console.
I'm try to change the bootloader SeaBios to U-boot. and U-BOOT IS A TX, RX OK.
Serial RX fail is a just SeaBios problem(Not HW issue). I guess.(Vendor builded coreboot(SeaBios) is TX/RX OK)
Please advise to me.
Thank you.