Add jlink config.

demo/Makefile

@@ -77,6 +77,9 @@ program.hex: $(TEST).o $(LINK)
 openocd:
 	openocd -f swerv.cfg
 
+jlink:
+	openocd -f jlink.cfg
+
 gdb:
 	$(GDB_PREFIX) -x gdbinit ./build/jtag.bin
 

demo/jlink.cfg

@@ -0,0 +1,45 @@
+#
+# SEGGER J-Link
+#
+# http://www.segger.com/jlink.html
+#
+
+adapter driver jlink
+transport select jtag
+adapter speed 200
+
+
+# Target configuration for the riscv chip
+
+set  _CHIPNAME riscv
+set _TARGETNAME $_CHIPNAME.cpu
+
+jtag newtap $_CHIPNAME tap -irlen 5 -expected-id 0x1000008b
+set _TARGETNAME $_CHIPNAME.tap
+target create $_TARGETNAME riscv -chain-position $_TARGETNAME 
+
+# Configure work area in on-chip SRAM
+# $_TARGETNAME configure -work-area-phys 0x1000e000 -work-area-size 1000 -work-area-backup 0
+
+riscv expose_csrs 1988
+
+# Be verbose about GDB errors
+gdb_report_data_abort enable
+gdb_report_register_access_error enable
+
+# Increase timeouts in simulation
+riscv set_command_timeout_sec 1200
+
+# Conclude OpenOCD configuration
+init
+
+# Halt the target
+halt
+
+
+# The serial number can be used to select a specific device in case more than
+# one is connected to the host.
+#
+# Example: Select J-Link with serial number 123456789
+#
+# adapter serial 123456789