dist/tools/mspdebug: build from source

This adds mspdebug as package, similar to EDBG, so that the
programmer/debugger is build from source.

This has the advantage that we can indeed provide patches of our own.
The first patch fixes a bug with the CPU detection of `mspdebug` in
combination with the Olimex MSP430-JTAG-TINY-V2. The second adds the
`--expect-id <CPU_NAME>` argument.

The RIOT integration is updated to directly make use of the
`--expect-id` parameter. No more spending time debugging why firmware
the firmware for the `olimex-msp430-h2618` doesn't run when flashed on
the `olimex-msp430h1611` hardware :D

dist/tools/mspdebug/.gitignore

@@ -0,0 +1 @@
+/mspdebug

dist/tools/mspdebug/Makefile

@@ -0,0 +1,25 @@
+PKG_NAME := mspdebug
+PKG_URL := https://github.com/dlbeer/mspdebug
+PKG_VERSION := 985b390ba22f4229aeca9f02e273a54eb4a76a9a
+PKG_LICENSE := GPL-2.0-only
+
+# manually set some RIOT env vars, so this Makefile can be called stand-alone
+RIOTBASE ?= $(CURDIR)/../../..
+RIOTTOOLS ?= $(CURDIR)/..
+
+PKG_SOURCE_DIR = $(CURDIR)/bin
+PKG_BUILD_OUT_OF_SOURCE = 0
+
+include $(RIOTBASE)/pkg/pkg.mk
+
+all: $(CURDIR)/mspdebug
+
+$(CURDIR)/mspdebug:
+# Start mspdebug build in a clean environment, so variables set by RIOT's build process
+# for cross compiling a specific target platform are reset and mspdebug can
+# be built cleanly for the native platform.
+	env -i PATH="$(PATH)" TERM="$(TERM)" "$(MAKE)" -C "$(PKG_BUILD_DIR)"
+	mv $(PKG_BUILD_DIR)/mspdebug .
+
+clean::
+	rm -f $(CURDIR)/mspdebug

dist/tools/mspdebug/debug.sh

@@ -5,10 +5,11 @@ MSPDEBUG_PROGRAMMER="$2"
 PROTOCOL="$3"
 MSPDEBUG_TTY="$4"
 DEBUG_ADAPTER_ID="$5"
-GDBPORT="$6"
-ELFFILE="$7"
-PREFIX="$8"
-RIOTBASE="$9"
+DEBUG_TARGET_ID="$6"
+GDBPORT="$7"
+ELFFILE="$8"
+PREFIX="$9"
+RIOTBASE="$10"
 
 # The setsid command is needed so that Ctrl+C in GDB doesn't kill mspdebug
 : "${SETSID:=setsid}"
@@ -28,6 +29,7 @@ fi
 
 sleep 2
 args=()
+args+=("--expect-id" "$DEBUG_TARGET_ID")
 if [ "JTAG" = "${PROTOCOL}" ]; then
     args+=("-j")
 elif [ "Spy-Bi-Wire" != "${PROTOCOL}" ]; then

dist/tools/mspdebug/debug_srv.sh

@@ -5,13 +5,15 @@ MSPDEBUG_PROGRAMMER="$2"
 PROTOCOL="$3"
 MSPDEBUG_TTY="$4"
 DEBUG_ADAPTER_ID="$5"
-GDBPORT="$6"
+DEBUG_TARGET_ID="$6"
+GDBPORT="$7"
 
 if [ -z "${MSPDEBUG_PROGRAMMER}" ]; then
     echo "MSPDEBUG_PROGRAMMER unset, cannot use mspdebug"
 fi
 
 args=()
+args+=("--expect-id" "$DEBUG_TARGET_ID")
 if [ "JTAG" = "${PROTOCOL}" ]; then
     args+=("-j")
 else

dist/tools/mspdebug/patches/6f507ddcd8a4db4b56bb4750ed837e505cb71abf.patch

@@ -0,0 +1,32 @@
+From 6f507ddcd8a4db4b56bb4750ed837e505cb71abf Mon Sep 17 00:00:00 2001
+From: Marian Buschsieweke <marian.buschsieweke@ovgu.de>
+Date: Thu, 25 May 2023 14:09:59 +0200
+Subject: [PATCH] drivers/fet_core.c: populate chip entry by detected CPU name
+
+Fixes https://github.com/dlbeer/mspdebug/issues/124
+---
+ drivers/fet_core.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/drivers/fet_core.c b/drivers/fet_core.c
+index 9f426ba..35695a7 100644
+--- a/drivers/fet_core.c
++++ b/drivers/fet_core.c
+@@ -226,6 +226,8 @@ static int identify_new(struct fet_device *dev, const char *force_id)
+ 		   ramSize / 1024);
+ 
+ 	show_dev_info(r->name, dev);
++	/* populate chip entry based on the detected name */
++	dev->base.chip = chipinfo_find_by_name(r->name);
+ 
+ 	if (fet_proto_xfer(&dev->proto, C_IDENT3,
+ 			   r->msg2b_data, r->msg2b_len, 0) < 0)
+@@ -344,6 +346,8 @@ static int identify_olimex(struct fet_device *dev, const char *force_id)
+ 		   ramSize, ramSize / 1024);
+ 
+ 	show_dev_info(r->name, dev);
++	/* populate chip entry based on the detected name */
++	dev->base.chip = chipinfo_find_by_name(r->name);
+ 
+ 	if (fet_proto_xfer(&dev->proto, C_IDENT3,
+ 			   r->msg2b_data, r->msg2b_len, 0) < 0)

dist/tools/mspdebug/patches/98a9522fd41402309a3c9f1fcff1b655c72dd795.patch

@@ -0,0 +1,90 @@
+From 98a9522fd41402309a3c9f1fcff1b655c72dd795 Mon Sep 17 00:00:00 2001
+From: Marian Buschsieweke <marian.buschsieweke@ovgu.de>
+Date: Thu, 25 May 2023 14:39:25 +0200
+Subject: [PATCH] ui/main.c: add --expect-id cmd line parameter
+
+The new parameter is useful for integrating mspdebug into build systems
+that want to ensure that the firmware to flash is actually written
+to the matching hardware. This is helpful if the user mistyped the
+hardware to build for and flash, or confused similar looking hardware.
+---
+ drivers/device.h |  1 +
+ ui/main.c        | 18 ++++++++++++++++++
+ 2 files changed, 19 insertions(+)
+
+diff --git a/drivers/device.h b/drivers/device.h
+index 14c0654..dfb41d7 100644
+--- a/drivers/device.h
++++ b/drivers/device.h
+@@ -82,6 +82,7 @@ struct device_args {
+ 	int			vcc_mv;
+ 	const char		*path;
+ 	const char		*forced_chip_id;
++	const char		*expect_chip_id;
+ 	const char		*requested_serial;
+ 	const char		*require_fwupdate;
+ 	const char		*bsl_entry_seq;
+diff --git a/ui/main.c b/ui/main.c
+index 073c848..1ebed73 100644
+--- a/ui/main.c
++++ b/ui/main.c
+@@ -137,6 +137,8 @@ static void usage(const char *progname)
+ "        Show a list of devices supported by the FET driver.\n"
+ "    --fet-force-id string\n"
+ "        Override the device ID returned by the FET.\n"
++"    --expect-id string\n"
++"        Abort if the MCU detected is not matching the given string.\n"
+ "    --fet-skip-close\n"
+ "        Skip the JTAG close procedure when using the FET driver.\n"
+ "    --usb-list\n"
+@@ -297,6 +299,7 @@ static int parse_cmdline_args(int argc, char **argv,
+ 		LOPT_HELP = 0x100,
+ 		LOPT_FET_LIST,
+ 		LOPT_FET_FORCE_ID,
++		LOPT_EXPECT_ID,
+ 		LOPT_FET_SKIP_CLOSE,
+ 		LOPT_USB_LIST,
+ 		LOPT_VERSION,
+@@ -315,6 +318,7 @@ static int parse_cmdline_args(int argc, char **argv,
+ 		{"help",                0, 0, LOPT_HELP},
+ 		{"fet-list",            0, 0, LOPT_FET_LIST},
+ 		{"fet-force-id",        1, 0, LOPT_FET_FORCE_ID},
++		{"expect-id",           1, 0, LOPT_EXPECT_ID},
+ 		{"fet-skip-close",      0, 0, LOPT_FET_SKIP_CLOSE},
+ 		{"usb-list",            0, 0, LOPT_USB_LIST},
+ 		{"version",             0, 0, LOPT_VERSION},
+@@ -426,6 +430,10 @@ static int parse_cmdline_args(int argc, char **argv,
+ 			args->devarg.forced_chip_id = optarg;
+ 			break;
+ 
++		case LOPT_EXPECT_ID:
++			args->devarg.expect_chip_id = optarg;
++			break;
++
+ 		case LOPT_FET_SKIP_CLOSE:
+ 			args->devarg.flags |= DEVICE_FLAG_SKIP_CLOSE;
+ 			break;
+@@ -573,6 +581,15 @@ int main(int argc, char **argv)
+ 	if (device_probe_id(device_default, args.devarg.forced_chip_id) < 0)
+ 		printc_err("warning: device ID probe failed\n");
+ 
++	if (args.devarg.expect_chip_id) {
++		if (strcmp(args.devarg.expect_chip_id, device_default->chip->name)) {
++			printf("Detected %s, but %s was expected\n",
++			       device_default->chip->name, args.devarg.expect_chip_id);
++			ret = -1;
++			goto fail_expect_id;
++		}
++	}
++
+ 	if (!(args.flags & OPT_NO_RC))
+ 		process_rc_file(args.alt_config);
+ 
+@@ -588,6 +605,7 @@ int main(int argc, char **argv)
+ 		reader_loop();
+ 	}
+ 
++fail_expect_id:
+ 	simio_exit();
+ 	device_destroy();
+ 	stab_exit();

makefiles/tools/mspdebug.inc.mk

@@ -1,12 +1,16 @@
-FLASHER ?= mspdebug
 FLASHFILE ?= $(HEXFILE)
 MSPDEBUG_PROGRAMMER ?= olimex
+MSPDEBUG ?= $(RIOTTOOLS)/mspdebug/mspdebug
+FLASHER ?= $(MSPDEBUG)
+FLASHDEPS += $(MSPDEBUG)
 
 DEBUGSERVER_PORT ?= 2000
 DEBUGGER := $(RIOTTOOLS)/mspdebug/debug.sh
 MSPDEBUG_PROTOCOL ?= JTAG
 MSPDEBUG_TTY ?=
 
+DEBUG_TARGET := $(call uppercase_and_underscore,$(CPU_MODEL))
+
 ifeq (JTAG,$(strip $(MSPDEBUG_PROTOCOL)))
   FFLAGS += -j
 endif
@@ -16,12 +20,13 @@ endif
 ifneq (,$(strip $(DEBUG_ADAPTER_ID)))
   FFLAGS += -s "$(DEBUG_ADAPTER_ID)"
 endif
+FFLAGS += --expect-id "$(DEBUG_TARGET)"
 FFLAGS += $(MSPDEBUG_PROGRAMMER) "prog $(FLASHFILE)"
 
-DEBUGGER_FLAGS = $(FLASHER) $(MSPDEBUG_PROGRAMMER) $(MSPDEBUG_PROTOCOL) "$(MSPDEBUG_TTY)" "$(DEBUG_ADAPTER_ID)" $(DEBUGSERVER_PORT) $(ELFFILE) $(PREFIX) $(RIOTBASE)
+DEBUGGER_FLAGS = $(MSPDEBUG) $(MSPDEBUG_PROGRAMMER) $(MSPDEBUG_PROTOCOL) "$(MSPDEBUG_TTY)" "$(DEBUG_ADAPTER_ID)" "$(DEBUG_TARGET)" $(DEBUGSERVER_PORT) $(ELFFILE) $(PREFIX) $(RIOTBASE)
 DEBUGSERVER := $(RIOTTOOLS)/mspdebug/debug_srv.sh
-DEBUGSERVER_FLAGS = $(FLASHER) $(MSPDEBUG_PROGRAMMER) $(MSPDEBUG_PROTOCOL) "$(MSPDEBUG_TTY)" "$(DEBUG_ADAPTER_ID)" $(DEBUGSERVER_PORT)
+DEBUGSERVER_FLAGS = $(MSPDEBUG) $(MSPDEBUG_PROGRAMMER) $(MSPDEBUG_PROTOCOL) "$(MSPDEBUG_TTY)" "$(DEBUG_ADAPTER_ID)" "$(DEBUG_TARGET)" $(DEBUGSERVER_PORT)
 
 # setup reset tool
-RESET ?= mspdebug
+RESET ?= $(MSPDEBUG)
 RESET_FLAGS ?= -j $(MSPDEBUG_PROGRAMMER) reset

makefiles/tools/targets.inc.mk

@@ -32,6 +32,12 @@ $(RIOTTOOLS)/edbg/edbg: $(RIOTTOOLS)/edbg/Makefile
 	CC= CFLAGS= $(MAKE) -C $(RIOTTOOLS)/edbg
 	@echo "[INFO] edbg binary successfully built!"
 
+$(RIOTTOOLS)/mspdebug/mspdebug: $(RIOTTOOLS)/mspdebug/Makefile
+	@echo "[INFO] mspdebug binary not found - building it from source now"
+	@echo "[INFO] mspdebug requires readline and libusb-compat headers to build"
+	CC= CFLAGS= $(MAKE) -C $(RIOTTOOLS)/mspdebug
+	@echo "[INFO] mspdebug binary successfully built!"
+
 $(RIOTTOOLS)/mosquitto_rsmb/mosquitto_rsmb:
 	@echo "[INFO] rsmb binary not found - building it from source now"
 	@$(MAKE) -C $(RIOTTOOLS)/mosquitto_rsmb