The ICEPick-D jtag router has core control registers
that provide the same (or similar) functionality as
the tap control register, for individual cores
accessible through the same tap (e.g. through a DAP).
Core control registers are located at address "0x60 +
core-id" of the ROUTER address space (IR=ROUTER).
It is sometimes helpful or even necessary to modify the
core control register. This patch renames the
"icepick_d_coreid" function to the more appropriate
"icepick_d_core_control" and adds a "value" argument
that allows writing of arbitrary value.
"icepick_d_tapenable" is extended by an optional value
argument so that core control can be written as the tap
is enabled.
Change-Id: I0e7f91b596cb5075364c6c233348508f58e0a901
Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
Reviewed-on: http://openocd.zylin.com/4141
Tested-by: jenkins
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
irscan $jrc [CONST IR_ROUTER] -endstate IRPAUSE
# ROUTER instructions are 32 bits wide
irscan $jrc [CONST IR_ROUTER] -endstate IRPAUSE
# ROUTER instructions are 32 bits wide
- set old_dr_value [drscan $jrc 32 $new_dr_value -endstate DRPAUSE]
+ set old_dr_value 0x[drscan $jrc 32 $new_dr_value -endstate DRPAUSE]
+# echo "\tOld router value:\t0x[format %x $old_dr_value]"
}
# Configure the icepick control register
}
# Configure the icepick control register
# jrc == TAP name for the ICEpick
# coreid== core id number 0..15 (not same as port number!)
# jrc == TAP name for the ICEpick
# coreid== core id number 0..15 (not same as port number!)
-proc icepick_d_set_coreid {jrc coreid } {
- icepick_c_router $jrc 1 0x6 $coreid 0x2008
+proc icepick_d_set_core_control {jrc coreid value } {
+ icepick_c_router $jrc 1 0x6 $coreid $value
}
# jrc == TAP name for the ICEpick
# port == a port number, 0..15
# Follow the sequence described in
# http://processors.wiki.ti.com/images/f/f6/Router_Scan_Sequence-ICEpick-D.pdf
}
# jrc == TAP name for the ICEpick
# port == a port number, 0..15
# Follow the sequence described in
# http://processors.wiki.ti.com/images/f/f6/Router_Scan_Sequence-ICEpick-D.pdf
-proc icepick_d_tapenable {jrc port coreid} {
+proc icepick_d_tapenable {jrc port coreid { value 0x2008 } } {
# First CONNECT to the ICEPick
icepick_c_connect $jrc
icepick_c_setup $jrc
# First CONNECT to the ICEPick
icepick_c_connect $jrc
icepick_c_setup $jrc
# Select the port
icepick_c_router $jrc 1 0x2 $port 0x2108
# Select the port
icepick_c_router $jrc 1 0x2 $port 0x2108
- # Set 4 bit core ID to the Cortex-A
- icepick_d_set_coreid $jrc $coreid
+ # Set icepick core control for $coreid
+ icepick_d_set_core_control $jrc $coreid $value
# Enter the bypass state
irscan $jrc [CONST IF_BYPASS] -endstate RUN/IDLE
# Enter the bypass state
irscan $jrc [CONST IF_BYPASS] -endstate RUN/IDLE
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