diff --git a/src/jtag/aice/aice_interface.c b/src/jtag/aice/aice_interface.c
index 838b54faa..363b208a3 100644
--- a/src/jtag/aice/aice_interface.c
+++ b/src/jtag/aice/aice_interface.c
@@ -31,7 +31,7 @@
 #include "aice_usb.h"
 
 #define AICE_KHZ_TO_SPEED_MAP_SIZE	16
-static int aice_khz_to_speed_map[AICE_KHZ_TO_SPEED_MAP_SIZE] = {
+static const int aice_khz_to_speed_map[AICE_KHZ_TO_SPEED_MAP_SIZE] = {
 	30000,
 	15000,
 	7500,
diff --git a/src/jtag/aice/aice_interface.h b/src/jtag/aice/aice_interface.h
index c7b896cad..ddb6ad419 100644
--- a/src/jtag/aice/aice_interface.h
+++ b/src/jtag/aice/aice_interface.h
@@ -22,9 +22,9 @@
 
 struct aice_interface_param_s {
 	/** */
-	char *device_desc;
+	const char *device_desc;
 	/** */
-	char *serial;
+	const char *serial;
 	/** */
 	uint16_t vid;
 	/** */
diff --git a/src/jtag/aice/aice_port.h b/src/jtag/aice/aice_port.h
index 241f8b805..d29e9e142 100644
--- a/src/jtag/aice/aice_port.h
+++ b/src/jtag/aice/aice_port.h
@@ -106,9 +106,9 @@ enum aice_command_mode {
 
 struct aice_port_param_s {
 	/** */
-	char *device_desc;
+	const char *device_desc;
 	/** */
-	char *serial;
+	const char *serial;
 	/** */
 	uint16_t vid;
 	/** */
@@ -225,7 +225,7 @@ struct aice_port_api_s {
 /** */
 struct aice_port {
 	/** */
-	char *name;
+	const char *name;
 	/** */
 	int type;
 	/** */
diff --git a/src/jtag/drivers/amt_jtagaccel.c b/src/jtag/drivers/amt_jtagaccel.c
index 45f2d5c4f..5aacead4b 100644
--- a/src/jtag/drivers/amt_jtagaccel.c
+++ b/src/jtag/drivers/amt_jtagaccel.c
@@ -124,7 +124,7 @@ static const int data_mode = IEEE1284_MODE_EPP | IEEE1284_DATA;
  * 4: Shift-IR
  * 5: Pause-IR
  */
-static uint8_t amt_jtagaccel_tap_move[6][6][2] = {
+static const uint8_t amt_jtagaccel_tap_move[6][6][2] = {
 	/*	   RESET         IDLE        DRSHIFT       DRPAUSE       IRSHIFT       IRPAUSE             */
 	{ {0x1f, 0x00}, {0x0f, 0x00}, {0x05, 0x00}, {0x0a, 0x00}, {0x06, 0x00}, {0x96, 0x00} },	/* RESET */
 	{ {0x1f, 0x00}, {0x00, 0x00}, {0x04, 0x00}, {0x05, 0x00}, {0x06, 0x00}, {0x0b, 0x00} },	/* IDLE */
diff --git a/src/jtag/drivers/at91rm9200.c b/src/jtag/drivers/at91rm9200.c
index f823ab64b..d7e11df24 100644
--- a/src/jtag/drivers/at91rm9200.c
+++ b/src/jtag/drivers/at91rm9200.c
@@ -79,7 +79,7 @@
 #define P31	(1 << 31)
 
 struct device_t {
-	char *name;
+	const char *name;
 	int TDO_PIO;	/* PIO holding TDO */
 	uint32_t TDO_MASK;	/* TDO bitmask */
 	int TRST_PIO;	/* PIO holding TRST */
@@ -94,7 +94,7 @@ struct device_t {
 	uint32_t SRST_MASK;	/* SRST bitmask */
 };
 
-static struct device_t devices[] = {
+static const struct device_t devices[] = {
 	{ "rea_ecr", PIOD, P27, PIOA, NC, PIOD, P23, PIOD, P24, PIOD, P26, PIOC, P5 },
 	{ .name = NULL },
 };
@@ -104,7 +104,7 @@ static char *at91rm9200_device;
 
 /* interface variables
  */
-static struct device_t *device;
+static const struct device_t *device;
 static int dev_mem_fd;
 static void *sys_controller;
 static uint32_t *pio_base;
@@ -196,7 +196,7 @@ struct jtag_interface at91rm9200_interface = {
 
 static int at91rm9200_init(void)
 {
-	struct device_t *cur_device;
+	const struct device_t *cur_device;
 
 	cur_device = devices;
 
diff --git a/src/jtag/drivers/cmsis_dap_usb.c b/src/jtag/drivers/cmsis_dap_usb.c
index b8f004c47..3e62ce9c8 100644
--- a/src/jtag/drivers/cmsis_dap_usb.c
+++ b/src/jtag/drivers/cmsis_dap_usb.c
@@ -137,7 +137,7 @@ static bool swd_mode;
 /* CMSIS-DAP Vendor Commands
  * None as yet... */
 
-static char *info_caps_str[] = {
+static const char * const info_caps_str[] = {
 	"SWD  Supported",
 	"JTAG Supported"
 };
diff --git a/src/jtag/drivers/ft2232.c b/src/jtag/drivers/ft2232.c
index 19f4dcb5f..6f8a0fcf1 100644
--- a/src/jtag/drivers/ft2232.c
+++ b/src/jtag/drivers/ft2232.c
@@ -164,7 +164,7 @@ static uint16_t ft2232_vid[MAX_USB_IDS + 1] = { 0x0403, 0 };
 static uint16_t ft2232_pid[MAX_USB_IDS + 1] = { 0x6010, 0 };
 
 struct ft2232_layout {
-	char *name;
+	const char *name;
 	int (*init)(void);
 	void (*reset)(int trst, int srst);
 	void (*blink)(void);
diff --git a/src/jtag/drivers/opendous.c b/src/jtag/drivers/opendous.c
index 6af3b28f4..deb6c7a80 100644
--- a/src/jtag/drivers/opendous.c
+++ b/src/jtag/drivers/opendous.c
@@ -41,7 +41,7 @@
 #define OPENDOUS_MAX_VIDS_PIDS 4
 /* define some probes with similar interface */
 struct opendous_probe {
-	char *name;
+	const char *name;
 	uint16_t VID[OPENDOUS_MAX_VIDS_PIDS];
 	uint16_t PID[OPENDOUS_MAX_VIDS_PIDS];
 	uint8_t READ_EP;
@@ -50,7 +50,7 @@ struct opendous_probe {
 	int BUFFERSIZE;
 };
 
-static struct opendous_probe opendous_probes[] = {
+static const struct opendous_probe opendous_probes[] = {
 	{"usbprog-jtag",	{0x1781, 0},			{0x0C63, 0},			0x82, 0x02, 0x00, 510 },
 	{"opendous",		{0x1781, 0x03EB, 0},	{0xC0C0, 0x204F, 0},	0x81, 0x02, 0x00, 360 },
 	{"usbvlab",			{0x16C0, 0},			{0x05DC, 0},			0x81, 0x02, 0x01, 360 },
@@ -109,7 +109,7 @@ static struct pending_scan_result *pending_scan_results_buffer;
 #define FUNC_READ_DATA        0x51
 
 static char *opendous_type;
-static struct opendous_probe *opendous_probe;
+static const struct opendous_probe *opendous_probe;
 
 /* External interface functions */
 static int opendous_execute_queue(void);
@@ -321,7 +321,7 @@ static int opendous_execute_queue(void)
 static int opendous_init(void)
 {
 	int check_cnt;
-	struct opendous_probe *cur_opendous_probe;
+	const struct opendous_probe *cur_opendous_probe;
 
 	cur_opendous_probe = opendous_probes;
 
diff --git a/src/jtag/drivers/parport.c b/src/jtag/drivers/parport.c
index 59c542c9f..ff7585951 100644
--- a/src/jtag/drivers/parport.c
+++ b/src/jtag/drivers/parport.c
@@ -60,7 +60,7 @@
 /* parallel port cable description
  */
 struct cable {
-	char *name;
+	const char *name;
 	uint8_t TDO_MASK;	/* status port bit containing current TDO value */
 	uint8_t TRST_MASK;	/* data port bit for TRST */
 	uint8_t TMS_MASK;	/* data port bit for TMS */
@@ -74,7 +74,7 @@ struct cable {
 	uint8_t LED_MASK;	/* data port bit for LED */
 };
 
-static struct cable cables[] = {
+static const struct cable cables[] = {
 	/* name				tdo   trst  tms   tck   tdi   srst  o_inv i_inv init  exit  led */
 	{ "wiggler",			0x80, 0x10, 0x02, 0x04, 0x08, 0x01, 0x01, 0x80, 0x80, 0x80, 0x00 },
 	{ "wiggler2",			0x80, 0x10, 0x02, 0x04, 0x08, 0x01, 0x01, 0x80, 0x80, 0x00, 0x20 },
@@ -108,7 +108,7 @@ static int wait_states;
 
 /* interface variables
  */
-static struct cable *cable;
+static const struct cable *cable;
 static uint8_t dataport_value;
 
 #if PARPORT_USE_PPDEV == 1
@@ -262,7 +262,7 @@ static struct bitbang_interface parport_bitbang = {
 
 static int parport_init(void)
 {
-	struct cable *cur_cable;
+	const struct cable *cur_cable;
 #if PARPORT_USE_PPDEV == 1
 	char buffer[256];
 #endif
diff --git a/src/jtag/hla/hla_interface.h b/src/jtag/hla/hla_interface.h
index f83269bfc..cb961bdea 100644
--- a/src/jtag/hla/hla_interface.h
+++ b/src/jtag/hla/hla_interface.h
@@ -33,9 +33,9 @@ extern const char *hl_transports[];
 
 struct hl_interface_param_s {
 	/** */
-	char *device_desc;
+	const char *device_desc;
 	/** */
-	char *serial;
+	const char *serial;
 	/** */
 	uint16_t vid;
 	/** */
diff --git a/src/jtag/interface.h b/src/jtag/interface.h
index 275c49555..c7130ccf4 100644
--- a/src/jtag/interface.h
+++ b/src/jtag/interface.h
@@ -198,7 +198,7 @@ static inline tap_state_t jtag_debug_state_machine(const void *tms_buf,
  */
 struct jtag_interface {
 	/** The name of the JTAG interface driver. */
-	char *name;
+	const char * const name;
 
 	/**
 	 * Bit vector listing capabilities exposed by this driver.