cortex_m: read and display core security state

[fw/openocd] / src / transport / transport.c

diff --git a/src/transport/transport.c b/src/transport/transport.c
index 35194b51c142ae6daee92eb7deeac095d262d063..9214dcd774fcabb392e703a74090efe56f1f71d2 100644 (file)
--- a/src/transport/transport.c
+++ b/src/transport/transport.c
@@ -12,8 +12,7 @@
  * GNU General Public License for more details.
 
  * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 #ifdef HAVE_CONFIG_H
@@ -61,7 +60,7 @@ static struct transport *transport_list;
  * currently selected debug adapter supports.  This is declared
  * by the time that adapter is fully set up.
  */
-static const char **allowed_transports;
+static const char * const *allowed_transports;
 
 /** * The transport being used for the current OpenOCD session.  */
 static struct transport *session;
@@ -94,7 +93,7 @@ static int transport_select(struct command_context *ctx, const char *name)
  * to declare the set of transports supported by an adapter.  When
  * there is only one member of that set, it is automatically selected.
  */
-int allow_transports(struct command_context *ctx, const char **vector)
+int allow_transports(struct command_context *ctx, const char * const *vector)
 {
        /* NOTE:  caller is required to provide only a list
         * of *valid* transport names
@@ -123,9 +122,9 @@ int allow_transports(struct command_context *ctx, const char **vector)
 }
 
 /**
- * Used to verify corrrect adapter driver initialization.
+ * Used to verify correct adapter driver initialization.
  *
- * @returns true iff the adapter declared one or more transports.
+ * @returns true if the adapter declares one or more transports.
  */
 bool transports_are_declared(void)
 {
@@ -140,7 +139,7 @@ bool transports_are_declared(void)
  * Code implementing a transport needs to register it before it can
  * be selected and then activated.  This is a dynamic process, so
  * that chips (and families) can define transports as needed (without
- * nneeding error-prone static tables).
+ * needing error-prone static tables).
  *
  * @param new_transport the transport being registered.  On a
  * successful return, this memory is owned by the transport framework.
@@ -239,12 +238,13 @@ COMMAND_HANDLER(handle_transport_init)
 {
        LOG_DEBUG("%s", __func__);
        if (!session) {
-               LOG_ERROR("session's transport is not selected.");
+               LOG_ERROR("session transport was not selected. Use 'transport select <transport>'");
 
                /* no session transport configured, print transports then fail */
-               const char **vector = allowed_transports;
+               LOG_ERROR("Transports available:");
+               const char * const *vector = allowed_transports;
                while (*vector) {
-                       LOG_ERROR("allow transport '%s'", *vector);
+                       LOG_ERROR("%s", *vector);
                        vector++;
                }
                return ERROR_FAIL;
@@ -258,10 +258,10 @@ COMMAND_HANDLER(handle_transport_list)
        if (CMD_ARGC != 0)
                return ERROR_COMMAND_SYNTAX_ERROR;
 
-       command_print(CMD_CTX, "The following transports are available:");
+       command_print(CMD, "The following transports are available:");
 
        for (struct transport *t = transport_list; t; t = t->next)
-               command_print(CMD_CTX, "\t%s", t->name);
+               command_print(CMD, "\t%s", t->name);
 
        return ERROR_OK;
 }
@@ -274,21 +274,32 @@ COMMAND_HANDLER(handle_transport_list)
  */
 static int jim_transport_select(Jim_Interp *interp, int argc, Jim_Obj * const *argv)
 {
+       int res;
        switch (argc) {
-               case 1:         /* return/display */
+               case 1: /* autoselect if necessary, then return/display current config */
                        if (!session) {
-                               LOG_ERROR("session's transport is not selected.");
-                               return JIM_ERR;
-                       } else {
-                               Jim_SetResultString(interp, session->name, -1);
-                               return JIM_OK;
+                               if (!allowed_transports) {
+                                       LOG_ERROR("Debug adapter does not support any transports? Check config file order.");
+                                       return JIM_ERR;
+                               }
+                               LOG_INFO("auto-selecting first available session transport \"%s\". "
+                                        "To override use 'transport select <transport>'.", allowed_transports[0]);
+                               res = transport_select(global_cmd_ctx, allowed_transports[0]);
+                               if (res != JIM_OK)
+                                       return res;
                        }
-                       break;
-               case 2:         /* assign */
+                       Jim_SetResultString(interp, session->name, -1);
+                       return JIM_OK;
+               case 2: /* assign */
                        if (session) {
-                               /* can't change session's transport after-the-fact */
-                               LOG_ERROR("session's transport is already selected.");
-                               return JIM_ERR;
+                               if (!strcmp(session->name, argv[1]->bytes)) {
+                                       LOG_WARNING("Transport \"%s\" was already selected", session->name);
+                                       Jim_SetResultString(interp, session->name, -1);
+                                       return JIM_OK;
+                               } else {
+                                       LOG_ERROR("Can't change session's transport after the initial selection was made");
+                                       return JIM_ERR;
+                               }
                        }
 
                        /* Is this transport supported by our debug adapter?
@@ -304,13 +315,17 @@ static int jim_transport_select(Jim_Interp *interp, int argc, Jim_Obj * const *a
 
                        for (unsigned i = 0; allowed_transports[i]; i++) {
 
-                               if (strcmp(allowed_transports[i], argv[1]->bytes) == 0)
-                                       return transport_select(global_cmd_ctx, argv[1]->bytes);
+                               if (strcmp(allowed_transports[i], argv[1]->bytes) == 0) {
+                                       if (transport_select(global_cmd_ctx, argv[1]->bytes) == ERROR_OK) {
+                                               Jim_SetResultString(interp, session->name, -1);
+                                               return JIM_OK;
+                                       }
+                                       return JIM_ERR;
+                               }
                        }
 
                        LOG_ERROR("Debug adapter doesn't support '%s' transport", argv[1]->bytes);
                        return JIM_ERR;
-                       break;
                default:
                        Jim_WrongNumArgs(interp, 1, argv, "[too many parameters]");
                        return JIM_ERR;