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Subject: Re: locore.S and debugging initial stages of kernel
From: Tim Kientzle <tim@kientzle.com>
In-Reply-To: <53A3619C.3020505@narod.ru>
Date: Thu, 19 Jun 2014 18:56:57 -0700
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To: Stepan Dyatkovskiy <stpworld@narod.ru>
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On Jun 19, 2014, at 3:18 PM, Stepan Dyatkovskiy <stpworld@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=92re using, and what
part of the boot process you=92re 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