[util] Add openocd to allow use of Olimex probe with Sonata

util/sonata-olimex-openocd-cfg.tcl

@@ -0,0 +1,35 @@
+# Copyright lowRISC contributors.
+# Licensed under the Apache License, Version 2.0, see LICENSE for details.
+# SPDX-License-Identifier: Apache-2.0
+
+# OpenOCD config to connect to the Sonata board via a external Olimex
+# ARM-USB-TINY-H JTAG probe:
+# https://www.olimex.com/Products/ARM/JTAG/ARM-USB-TINY-H/
+# Note to use the external probe the user JTAG isolation switches must be
+# toggled on the Sonata board. This is all 8 switches in bank SW2 on the
+# underside of the board. They should be set in the position next to the switch
+# numbers.
+
+source [find interface/ftdi/olimex-arm-usb-tiny-h.cfg]
+
+# Configure JTAG chain and the target processor
+set _CHIPNAME riscv
+
+# Ibex Demo System JTAG IDCODE
+set _EXPECTED_ID 0x11001CDF
+
+jtag newtap $_CHIPNAME cpu -irlen 5 -expected-id $_EXPECTED_ID -ignore-version
+set _TARGETNAME $_CHIPNAME.cpu
+target create $_TARGETNAME riscv -chain-position $_TARGETNAME
+
+adapter speed 10000
+
+riscv set_mem_access sysbus
+gdb_report_data_abort enable
+gdb_report_register_access_error enable
+gdb_breakpoint_override hard
+
+reset_config none
+
+init
+halt