Hi, I am trying to printf-debug EFI execution triggered by Linux call. Specifically I remove a persistent variable via Linux console and want to follow execution. Without any printf() this works fine. I need this to refine existing implementation of saving variables to SPI flash.
While printf() works in U-Boot startup context it leads to crash when EFI function was called from Linux. Same for putc(). Next I tried efi_st_printf() but this already crashes in U-Boot startup context. How do you achieve printf() debugging in this scenario? Which initialization steps are required to get efi_st_printf() working outside self_test context? TIA & KR Michael
