This patch provides an initial beaglebloard.cfg file up for inclusion/review.
1) I use it with the following configuration. and run into some problems: I can not tun the enable_dap multiple times (note that is doesn't do anything real strange) 2) As you see I defined "beagleboard" board. I see that this beagleboard will be used in many places and that doesn't feel right according to DRY http://en.wikipedia.org/wiki/Don't_repeat_yourself #Interface source [find interface/flyswatter.cfg] #jtag scan chain source [find board/beagleboard.cfg] #disable the dap before we enable it jtag tapdisable beagleboard.dap proc enable_dap { } { puts "Enabling DAP" irscan 0 7 drscan 0 8 0X89 #irscan 0 2 #fails.. #drscan 0 32 0x81000080 #drscan 0 32 0xa3002048 #drscan 0 32 0x81002148 #drscan 0 32 0xa3002148 #sleep 10 #jtag tapenable beagleboard.dap puts "Enabled DAP" } reset_config trst_and_srst greetings
Index: src/target/board/beagleboard.cfg =================================================================== --- src/target/board/beagleboard.cfg (revision 0) +++ src/target/board/beagleboard.cfg (revision 0) @@ -0,0 +1,38 @@ +# +# Beagle Board is an ultra-low cost, high performance, +# low power OMAP3 based platform designed by BeagleBoard.org +# community members and sold by Digi-Key. +# +# The OpenOCD BeagleBoard support in under development and not functional +# yet + +#BeagleBoard scan chain. +# +# JRC or JTAG Router Controler is the piece hardware that can dynamically +# add or remove Test access points to a JTAG scan chain. +# +# Texas Instruments calls this feature ICEPick. ICEPick can be seen as +# Controller with can not only enable and disable parts of the scan chain +# but apparently also other things (like reading the emu status bits?). +# +# JTAG +# +# TDO | | TDI +# | | +# -----|------------|--------------- +# | | | | +# | | (Bypass)-IcePickTAP | +# | | | | +# | (Bypass)-----(Bypass) | +# ---------------------------------- +# | | +# | | +# CoreSight DSP +# +#The first item is the IcePick TAP itself. and up to 16 TAPs +#can be added in the IcePick. +#The Second item in the scan chain on the beagleboard the dap providing direct +#access to memory, the cortex8, the etm and the etb. This item is not enabled +#by default and is attached to the third TAP on the IcePick. +jtag newtap beagleboard jrc_icepick -irlen 6 -ircapture 0x1 -irmask 0x0 +jtag newtap beagleboard dap -irlen 4 -ircapture 0x1 -irmask 0x0
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