jtag/drivers: Add support for TI XDS110 debug probe

Add support for the XDS110 debug probe using the APIs in the
probe's firmware. Includes support for older versions of the
firmware (with reduced performance) and support for a newer
version that includes OpenOCD specific APIs. Tested on various
TI LauchPads including MSP432P4, MSP432E4, CC2650, CC2652, and
CC3220SF.

Updated to add better support for swd switch. Removed issues found with
clang static analysis.

Updated to add rules entry for the XDS110 probe and Tiva DFU mode (which
affects both XDS110 and ICDI probes).

Change-Id: Ib274143111a68e67e80003797c6a68e3e80976b2
Signed-off-by: Edward Fewell <efewell@ti.com>
Reviewed-on: http://openocd.zylin.com/4322
Tested-by: jenkins
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>

configure.ac

@@ -115,7 +115,8 @@ m4_define([USB1_ADAPTERS],
 	[[ulink], [Keil ULINK JTAG Programmer], [ULINK]],
 	[[usb_blaster_2], [Altera USB-Blaster II Compatible], [USB_BLASTER_2]],
 	[[ft232r], [Bitbang mode of FT232R based devices], [FT232R]],
-	[[vsllink], [Versaloon-Link JTAG Programmer], [VSLLINK]]])
+	[[vsllink], [Versaloon-Link JTAG Programmer], [VSLLINK]],
+	[[xds110], [TI XDS110 Debug Probe], [XDS110]]])
 
 m4_define([USB_ADAPTERS],
 	[[[osbdm], [OSBDM (JTAG only) Programmer], [OSBDM]],

contrib/60-openocd.rules

@@ -128,6 +128,12 @@ ATTRS{idVendor}=="1781", ATTRS{idProduct}=="0c63", MODE="660", GROUP="plugdev",
 # TI/Luminary Stellaris In-Circuit Debug Interface (ICDI) Board
 ATTRS{idVendor}=="1cbe", ATTRS{idProduct}=="00fd", MODE="660", GROUP="plugdev", TAG+="uaccess"
 
+# TI XDS110 Debug Probe (Launchpads and Standalone)
+ATTRS{idVendor}=="0451", ATTRS{idProduct}=="bef3", MODE="660", GROUP="plugdev", TAG+="uaccess"
+
+# TI Tiva-based ICDI and XDS110 probes in DFU mode
+ATTRS{idVendor}=="1cbe", ATTRS{idProduct}=="00ff", MODE="660", GROUP="plugdev", TAG+="uaccess"
+
 # Ambiq Micro EVK and Debug boards.
 ATTRS{idVendor}=="2aec", ATTRS{idProduct}=="6010", MODE="664", GROUP="plugdev", TAG+="uaccess"
 ATTRS{idVendor}=="2aec", ATTRS{idProduct}=="6011", MODE="664", GROUP="plugdev", TAG+="uaccess"

doc/openocd.texi

@@ -531,6 +531,12 @@ debuggers to ARM Cortex based targets @url{http://www.keil.com/support/man/docs/
 
 @item @b{Keil ULINK v1}
 @* Link: @url{http://www.keil.com/ulink1/}
+
+@item @b{TI XDS110 Debug Probe}
+@* The XDS110 is included as the embedded debug probe on many Texas Instruments
+LaunchPad evaluation boards.
+@* Link: @url{http://processors.wiki.ti.com/index.php/XDS110}
+@* Link: @url{http://processors.wiki.ti.com/index.php/XDS_Emulation_Software_Package#XDS110_Support_Utilities}
 @end itemize
 
 @section IBM PC Parallel Printer Port Based

src/jtag/drivers/Makefile.am

@@ -156,10 +156,12 @@ endif
 if IMX_GPIO
 DRIVERFILES += %D%/imx_gpio.c
 endif
-
 if KITPROG
 DRIVERFILES += %D%/kitprog.c
 endif
+if XDS110
+DRIVERFILES += %D%/xds110.c
+endif
 
 DRIVERHEADERS = \
 	%D%/bitbang.h \

src/jtag/interfaces.c

@@ -132,6 +132,9 @@ extern struct jtag_interface kitprog_interface;
 #if BUILD_IMX_GPIO == 1
 extern struct jtag_interface imx_gpio_interface;
 #endif
+#if BUILD_XDS110 == 1
+extern struct jtag_interface xds110_interface;
+#endif
 #endif /* standard drivers */
 
 /**
@@ -234,6 +237,9 @@ struct jtag_interface *jtag_interfaces[] = {
 #if BUILD_IMX_GPIO == 1
 		&imx_gpio_interface,
 #endif
+#if BUILD_XDS110 == 1
+		&xds110_interface,
+#endif
 #endif /* standard drivers */
 		NULL,
 	};

tcl/interface/xds110.cfg

@@ -0,0 +1,12 @@
+#
+# Texas Instruments XDS110
+#
+# http://processors.wiki.ti.com/index.php/XDS110
+# http://processors.wiki.ti.com/index.php/Emulation_Software_Package#XDS110_Support_Utilities
+#
+
+interface xds110
+
+# Use serial number option to use a specific XDS110
+# when more than one are connected to the host.
+#xds110_serial 00000000