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SQNx010 RealView Multi-ICE Support

jleach jleach
Note: This was originally posted on 24th November 2008 at http://forums.arm.com

Are the Sequans SQN1010 or SQN2010 processors supported by the RealView Multi-ICE?  The SQNx010 has an ARM926EJ-S core but there are two other devices on the JTAG bus.  I have heard that someone got a RealView Multi-ICE working on these processors but they required addition software from ARM.  The SQNx010 is not listed on the supported processors so I am dubious.  But if one company got the ICE working, I was hoping the support might be available directly from ARM. 

Thanks.

Jim
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  • Note: This was originally posted on 25th November 2008 at http://forums.arm.com

    I haven't used the processors you mention, however, I do know that what you're describing is quite normal. You can probably ignore the other devices on the JTAG scan chain. They are used for various things (and this is specific to the board), but for straightforward debugging they will not usually be required.

    A good example of where this is used is in a multi-core processor (or a multi-processor SoC) with a single JTAG port. In this case, you will see multiple cores in the JTAG scan chain.



    We purchased a Windriver ARM probe that also supported the ARM926EJ-S core and setup the GUI to ignore the other two devices on the bus - the ARM926EJ-S was in the middle of the chain.  After quite a bit of effort, Windriver said the register set in the probe did not quite match that of the ARM926EJ-S in the Sequans SQN-1010 processor.  The probe almost work but not quite.  And it failed when attempting to write the flash.  According to Windriver support ARM register sets can vary somewhat.  Sequans IP is not available so there is no way to be sure what the register set differences are.

    When I heard someone got the RealView Multi-ICE working on the SQN1010 and SQN2010 I assumed ARM provided the correct register set.  ARM would not verify the Multi-ICE works on the SQNx010 processors.

    So I was hoping someone on the forum got the SQNx010 processors working with an ARM product and could provide real details.  After our first experience we do not want to purchase any equipment unless someone says it will work.

    Anyway, thanks for the response.

    Jim
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  • Note: This was originally posted on 25th November 2008 at http://forums.arm.com

    I haven't used the processors you mention, however, I do know that what you're describing is quite normal. You can probably ignore the other devices on the JTAG scan chain. They are used for various things (and this is specific to the board), but for straightforward debugging they will not usually be required.

    A good example of where this is used is in a multi-core processor (or a multi-processor SoC) with a single JTAG port. In this case, you will see multiple cores in the JTAG scan chain.



    We purchased a Windriver ARM probe that also supported the ARM926EJ-S core and setup the GUI to ignore the other two devices on the bus - the ARM926EJ-S was in the middle of the chain.  After quite a bit of effort, Windriver said the register set in the probe did not quite match that of the ARM926EJ-S in the Sequans SQN-1010 processor.  The probe almost work but not quite.  And it failed when attempting to write the flash.  According to Windriver support ARM register sets can vary somewhat.  Sequans IP is not available so there is no way to be sure what the register set differences are.

    When I heard someone got the RealView Multi-ICE working on the SQN1010 and SQN2010 I assumed ARM provided the correct register set.  ARM would not verify the Multi-ICE works on the SQNx010 processors.

    So I was hoping someone on the forum got the SQNx010 processors working with an ARM product and could provide real details.  After our first experience we do not want to purchase any equipment unless someone says it will work.

    Anyway, thanks for the response.

    Jim
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