[Test] Arris CM820 Challenge

JTAG work on Surfboard cable modem.

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Lebzul
Junior Member
Posts: 10
Joined: Fri Jan 24, 2014 1:31 pm

[Test] Arris CM820 Challenge

Post by Lebzul »

Hi everyone,

The reason I am opening a new threat is for testing purposes for Arris CM820. I'd like that everyone has access to the proper flash distribution through a proper .xml so testing be easier on this model.

If there is no untouched backup, I am willing to share mine (made from DCP3000) for the sake of science.
Carlito's way
Junior Member
Posts: 34
Joined: Mon Sep 21, 2015 10:11 am

Puma 5

Post by Carlito's way »

I don't have the flash but remember this one has a Puma 5 so pretty much follows the dpc3000 fashion. I bet the firm stays in the same playground and xml shouldn't be too different.
Lebzul
Junior Member
Posts: 10
Joined: Fri Jan 24, 2014 1:31 pm

Post by Lebzul »

Carlito's way wrote:I don't have the flash but remember this one has a Puma 5 so pretty much follows the dpc3000 fashion. I bet the firm stays in the same playground and xml shouldn't be too different.
Yes, I bet so too. The problem is that I am not a savvy person in hex. That's why I'm proposing it so someone may clarify it and create a proper .xml for the community.

Along to this, to be able to withdraw the certs from the flash is one of the secondary purposes.
CAPONE
Junior Member
Posts: 5011
Joined: Sat Dec 27, 2008 3:25 pm

Post by CAPONE »

Been doing the CM820A for a long time now. Unlike the DPC3000 which is a 16MB flash, the CM820A is 8Mb.

<Test>
<Name>CM820A</Name>
<Cat>Modem</Cat>
<Protocol>SPIFLASH</Protocol>
<Endian>Big</Endian>
<Memorys>
<Memory>
<Name>U-Boot</Name>
<Type>1</Type>
<Address>0</Address>
<Size>0x20000</Size>
</Memory>
<Memory>
<Name>env1</Name>
<Type>1</Type>
<Address>0x20000</Address>
<Size>0x10000</Size>
</Memory>
<Memory>
<Name>env2</Name>
<Type>1</Type>
<Address>0x30000</Address>
<Size>0x10000</Size>
</Memory>
<Memory>
<Name>UBFI1</Name>
<Type>1</Type>
<Address>0x40000</Address>
<Size>0x3b0000</Size>
</Memory>
<Memory>
<Name>UBFI2</Name>
<Type>1</Type>
<Address>0x3f0000</Address>
<Size>0x3b0000</Size>
</Memory>
<Memory>
<Name>Blank</Name>
<Type>1</Type>
<Address>0x7a0000</Address>
<Size>0x10000</Size>
</Memory>
<Memory>
<Name>nvram</Name>
<Type>1</Type>
<Address>0x7b0000</Address>
<Size>0x50000</Size>
</Memory>
</Memorys>
</Test>
"If you give a man a fish you feed him for a day. If you teach a man to fish you feed him for a lifetime."
household2
Junior Member
Posts: 53
Joined: Thu Mar 18, 2010 5:47 pm

Post by household2 »

any one have a good clone for dci105com
[email protected]
Lebzul
Junior Member
Posts: 10
Joined: Fri Jan 24, 2014 1:31 pm

Post by Lebzul »

CAPONE wrote:Been doing the CM820A for a long time now. Unlike the DPC3000 which is a 16MB flash, the CM820A is 8Mb.

<Test>
<Name>CM820A</Name>
<Cat>Modem</Cat>
<Protocol>SPIFLASH</Protocol>
<Endian>Big</Endian>
<Memorys>
<Memory>
<Name>U-Boot</Name>
<Type>1</Type>
<Address>0</Address>
<Size>0x20000</Size>
</Memory>
<Memory>
<Name>env1</Name>
<Type>1</Type>
<Address>0x20000</Address>
<Size>0x10000</Size>
</Memory>
<Memory>
<Name>env2</Name>
<Type>1</Type>
<Address>0x30000</Address>
<Size>0x10000</Size>
</Memory>
<Memory>
<Name>UBFI1</Name>
<Type>1</Type>
<Address>0x40000</Address>
<Size>0x3b0000</Size>
</Memory>
<Memory>
<Name>UBFI2</Name>
<Type>1</Type>
<Address>0x3f0000</Address>
<Size>0x3b0000</Size>
</Memory>
<Memory>
<Name>Blank</Name>
<Type>1</Type>
<Address>0x7a0000</Address>
<Size>0x10000</Size>
</Memory>
<Memory>
<Name>nvram</Name>
<Type>1</Type>
<Address>0x7b0000</Address>
<Size>0x50000</Size>
</Memory>
</Memorys>
</Test>
Thanks for the details. Have you seen the DG1670? Is a Nand Flash.
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