Lpc2000

Hi,

> From: lpc2100_fan [mailto:lpc2100_fan@...]
> Sent: 04 January 2006 08:31
> To: lpc2000@yahoogroups.com
> Subject: [lpc2000] Re: LPC Boot Loader Internals
> 
> 
> In all your great wisdom you seem to have missed that the
> LPC2104/2105/2106 can NOT be secured at all against reading the flash.
> This is a well known fact and all findings in the LPC2105 about
> security are absolutely worthless.
> On top of that the 1.52 is an ancient version of the bootloader.

You know, those are very harsh words.  He didn't claim that it would add
anything in your hunt to find fault in LPC code protection--it was
presented as a general resource and was used to help his situation.  He
also asked if anybody could help him by passing comment on omissions or
errors.  He said exactly which bootloader and which chip it came from,
and to dismiss this out of hand is not very generous.

Personally, I don't think it's worthless-it's interesting.

-- Paul Curtis

> --- In lpc2000@yahoogroups.com, "jayasooriah" 
> <jayasooriah@y...> wrote:
> >
> > Hello,
> > 
> > My composition of the source code for LPC2105 boot loader revision
> > 1.52 can be found at:
> > 
> >   http://www.cse.unsw.edu.au/~jayas/esdk/files/lpc/2105.s
> > 
> > I had to do this to replace the boot loader supplied so as 
> to stop my
> > students from killing their USB-LPC boards. There is enough in the
> > source file for anyone interested to write your own boot loader.
> > 
> > Anyone interersted in playing with the source should look at related
> > documentation (works in progress) higher up the tree.  You 
> will find I
> > have a simple tool you can use to dump LPC boot sector (both 8K and
> > 12K sizes) of the part you are using.  I will finish up to 
> disasembly
> > section break for the holidays.
> > 
> > Although this is directed at a different audience to this 
> group, your
> > input on errors, omissions and suggestions are most 
> welcome.  Do feel
> > free to drop me an email with subject as "re: Boot Loader 
> Internals".
> > 
> > Enjoy.
> > 
> > Jaya
> >
> 
> 
> 
> 
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>  
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