I have some older BBB devices out in the world running some rather old OS code. Due to some bad capacitor choices, we’re seeing a lot of noise on the debug serial port that is interpreted as the “any key” a bit too often.
I’m trying to port the “space key to halt boot” fix from am335x: BeagleBones enable CONFIG_AUTOBOOT_KEYED (07684b99) · Commits · U-Boot / U-Boot · GitLab back into the 2015.01 u-boot code (updating the full OS on these is NOT in scope) and following instructions at Embedded Coding: Beaglebone Black Development Part 4 - Bootloader, Linux Kernel and Filesystem to rebuild the bootloader.
The file change went smoothly, as did the instructions for pulling in all of RCN’s assorted patches. When I run “make am335x_evm_defconfig”, though, the “CONFIG_AUTOBOOT_” entries are NOT making into the .config file that’s generated.
What am I missing, folks? This seems like it should be pretty obvious…