On Mon, Sep 26, 2016 at 6:33 PM, Moritz Fischer moritz.fischer@ettus.com wrote:
Hi Adam
On Mon, Sep 26, 2016 at 12:35 PM, Adam Van Ymeren adam.vany@gmail.com wrote:
I'm trying to run the latest u-boot on the old samsung exynos5250 chromebook (snow_defconfig). I've managed to get the u-boot console up but it doesn't respond to keyboard input.
I managed to hack the startup procedure to call dm_dump_all() which shows the the keyboard-controller of cros_ec was attached I think.
Anyone remember much about this board or have any tips on how I could start debugging this?
Not sure if helpful: Try to build with CONFIG_USB_KEYBOARD enabled, and change stdin?
I got it! stdin was set to the wrong thing.
Turns out there is an existing u-boot environment in the flash storage that had stdin set to "serial,mkbp_keyb" where mkbp_keyb is the device name that the chromium/ChromeOS guys used in their forked u-boot but is known as cros_ec_kbd in the master repo.
I had to use an old u-boot from the chromium project to boot up and modify the environment.
Is there a way to configure u-boot to ignore the environment stored in flash and just use the default? I couldn't find an option for that, and my attempts to modify common/env_flash.c so far haven't been fruitful.
Thanks for the help! -Adam
Cheers,
Moritz