[U-Boot-Users] s3c2440 -- serial_init

Harald Welte laforge at gnumonks.org
Sun Apr 6 12:07:42 CEST 2008


On Fri, Apr 04, 2008 at 08:29:48PM +0530, Tiju wrote:
> Hi Vishal,
> 
> I am stuck with the Kernel load address and entry point. It keeps on
> resetting. Output as shown below.

are you sure

1) your PLL's are configured correctly, i.e.
* the memory bus doesn't exceed the maximum bus frequency allowed given
  your capacitive bus load (see samsung manual)
* the core CPU speed doesn't exceed the max speed
* the core CPU voltage is configued correct for the core CPU clock rate

2) Are you sure your linux kernel is compiled for the right ARM variant
   with no strange compiler flags?

I suggest running extensive memory testing routines (u-boot has memory
testing built-in) before trying to boot the kernel, just to make sure
the entire hardware and PLL / power config is stable at all.

Another interesting question would be to compare the memory contents at
the program counter with the content it should have according to the
uImage/zImage/vmlinux file of th kernel.

-- 
- Harald Welte <laforge at gnumonks.org>           http://laforge.gnumonks.org/
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