From dd60dd84f28deb9dd485384466c4417b527ac3b2 Mon Sep 17 00:00:00 2001 From: Matthias Welwarsky Date: Sun, 26 Mar 2017 10:24:59 +0200 Subject: [PATCH] icepick-d: extend access to core control register 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 Reviewed-on: http://openocd.zylin.com/4141 Tested-by: jenkins Reviewed-by: Matthias Welwarsky --- tcl/target/icepick.cfg | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/tcl/target/icepick.cfg b/tcl/target/icepick.cfg index abd7b6a0..0f160bb1 100644 --- a/tcl/target/icepick.cfg +++ b/tcl/target/icepick.cfg @@ -63,7 +63,8 @@ proc icepick_c_router {jrc rw block register payload} { 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 @@ -109,15 +110,15 @@ proc icepick_c_tapenable {jrc port} { # 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 -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 @@ -125,8 +126,8 @@ proc icepick_d_tapenable {jrc port coreid} { # 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 -- 2.39.5