locore.S and debugging initial stages of kernel

[Tim Kientzle]

On Jun 19, 2014, at 3:18 PM, Stepan Dyatkovskiy <stpworld at narod.ru> wrote:

> Hi all,
> I would like to check several things in locore.S. But I don't have JTAG debugger, so I have to use printf-like functions. Are there any known ways to do it?

Depending on the particular board you’re using, and what
part of the boot process you’re testing:
  * A few lines of assembly can blink an LED
  * A few more lines of assembly can bring up a UART
  * Allocate a static buffer and write events into it, then dump the buffer after the kernel sets up the console

Tim