Hello,
From reading the Makefile in payloads/external/SeaBIOS, both CONFIG_CONSOLE_SERIAL and CONFIG_DRIVERS_UART_8250IO need to be set. However, I can't seem to find which config file I need to modify to properly set these variables. Additionally, CONFIG_TTYS0_BASE needs to be set as well. I've also attempted to manually build SeaBIOS with serial output enabled, but that didn't seem to have any impact on the result.
From what I know you will have to slightly modify the coreboot source to be able to personalize your seabios configuration. https://pelican.craoc.fr/coreboot.html#seabios_1 -- Regards Maxime de Roucy
Hi Dylan, I'm not sure if you've already figured this problem out, but the CONFIG variables are set by Kconfig and would be in your .config file. Looking at the .config file you posted I have no idea how you're seeing anything coming out on serial from coreboot. The only logging I see is to CBMEM.
It's going to be difficult to help you debug this on the email list, so I'd suggest joining the IRC channel and asking there. Feel free to PM me if you still need help - martinr.
Martin
On Sun, Apr 24, 2016 at 5:02 AM, Maxime de Roucy maxime.deroucy@gmail.com wrote:
Hello,
From reading the Makefile in payloads/external/SeaBIOS, both CONFIG_CONSOLE_SERIAL and CONFIG_DRIVERS_UART_8250IO need to be set. However, I can't seem to find which config file I need to modify to properly set these variables. Additionally, CONFIG_TTYS0_BASE needs to be set as well.
I've also attempted to manually build SeaBIOS with serial output enabled, but that didn't seem to have any impact on the result.
From what I know you will have to slightly modify the coreboot source to be able to personalize your seabios configuration. https://pelican.craoc.fr/coreboot.html#seabios_1 -- Regards Maxime de Roucy
-- coreboot mailing list: coreboot@coreboot.org https://www.coreboot.org/mailman/listinfo/coreboot
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Martin Roth -
Maxime de Roucy