+# SPDX-License-Identifier: GPL-2.0-or-later
+
#
# Copyright (C) 2011 by Karl Kurbjun
# Copyright (C) 2009 by David Brownell
#
-# Utilities for TI ICEpick-C ... used in DaVinci, OMAP3, and more.
-# Details about the ICEPickC are available in the AM/DM37x document SPRUGN4M
+# Utilities for TI ICEpick-C/D used in most TI SoCs
+# Details about the ICEPick are available in the the TRM for each SoC
+# and http://processors.wiki.ti.com/index.php/ICEPICK
# create "constants"
proc CONST { key } {
proc icepick_c_router {jrc rw block register payload} {
set new_dr_value \
- [expr ( ($rw & 0x1) << 31) | ( ($block & 0x7) << 28) | \
- ( ($register & 0xF) << 24) | ( $payload & 0xFFFFFF ) ]
+ [expr { ( ($rw & 0x1) << 31) | ( ($block & 0x7) << 28) | \
+ ( ($register & 0xF) << 24) | ( $payload & 0xFFFFFF ) } ]
# echo "\tNew router value:\t0x[format %x $new_dr_value]"
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 $old_dr_value]"
}
# Configure the icepick control register
}
# jrc == TAP name for the ICEpick
-# port == a port number, 0..15
+# port == a port number, 0..15 for debug tap, 16..31 for test tap
proc icepick_c_tapenable {jrc port} {
+ if { ($port >= 0) && ($port < 16) } {
+ # Debug tap"
+ set tap $port
+ set block 0x2
+ } elseif { $port < 32 } {
+ # Test tap
+ set tap [expr {$port - 16}]
+ set block 0x1
+ } else {
+ echo "ERROR: Invalid ICEPick C port number: $port"
+ return
+ }
+
# First CONNECT to the ICEPick
# echo "Connecting to ICEPick"
icepick_c_connect $jrc
# And never to enter RESET, which will disable the TAPs.
# first enable power and clock for TAP
- icepick_c_router $jrc 1 0x2 $port 0x100048
+ icepick_c_router $jrc 1 $block $tap 0x110048
# TRM states that the register should be read back here, skipped for now
# enable debug "default" mode
- icepick_c_router $jrc 1 0x2 $port 0x102048
+ icepick_c_router $jrc 1 $block $tap 0x112048
# TRM states that debug enable and debug mode should be read back and
# confirmed - skipped for now
# Finally select the tap
- icepick_c_router $jrc 1 0x2 $port 0x102148
+ icepick_c_router $jrc 1 $block $tap 0x112148
# Enter the bypass state
irscan $jrc [CONST IR_BYPASS] -endstate RUN/IDLE
runtest 10
}
+# jrc == TAP name for the ICEpick
+# coreid== core id number 0..15 (not same as port number!)
+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 { value 0x2008 } } {
+
+ # First CONNECT to the ICEPick
+ icepick_c_connect $jrc
+ icepick_c_setup $jrc
+
+ # Select the port
+ icepick_c_router $jrc 1 0x2 $port 0x2108
+
+ # 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
+ runtest 10
+}
+
# This function uses the ICEPick to send a warm system reset
proc icepick_c_wreset {jrc} {
# send a router write, block is 0, register is 1, value is 0x2100
icepick_c_router $jrc 1 0x0 0x1 0x002101
}
-