Dear Grant,
in message 528646bc0502242240233e0d7f@mail.gmail.com you wrote:
Provide our own console functions. See common/console.c and common/devices.c how it is initialized and used.
Note thatt he "devices" are intialized pretty late in the boot sequence. Until then, all of the most of the important console messages have already beeen printed.
From the original post: "We're using some emulation box to develop our
SoC. Somehow the UART will the last component available for firmware development."
I don't think that is the situation that Shawn is describing. To me it sounded like he is starting firmware development before all of the functionality is delivered by the hardware engineers. I don't think
You are right. Then Ladislav Michl suggested to use special console functions for output, which works, but misses most of the "interesting" startup messages which are printed long before the device funtions are installed.
that he is refering to initialization order. Shawn, could you please clarify?
Initialization order plays only a role here as a console device starts working too late. The native console port is the serial port.
Best regards,
Wolfgang Denk