Øyvind,

> I don't think we should solve this as a target, but
> rather a
> more generic scheme for JTAG TAP devices that come
> and go/get reordered.
> 
> 
> Did you read up on what I/Duane designed on devices being
> enable/disabled?
> 
> https://lists.berlios.de/pipermail/openocd-development/2008-October/003416.html
> 
> 

based on the fact that the order is fixed and they are simply inactive, i 
started testing with defining the entries in the config based on the discussion 
that had been posted using the example of the davinci on a dm-355:

#jtag scan chain
#format L IRC IRCM IDCODE (Length, IR Capture, IR Capture Mask, IDCODE)
jtag_device 0  0x1 0x0 0x0
jtag_device 0  0x1 0x0 0xe
jtag_device 6 0x1 0x0 0x0

#target <type> <endianness> <reset mode> <chainpos> <variant>
target arm926ejs little reset_halt 1 arm926ejs



once the system is up, i issue the irscan/drscan to add the arm tap into the 
chain and then change the length from 0(inactive) to 4.

dave


      
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