flash at91samd, at91sam4l: fix improper use of mem_ap_ call

[openocd.git] / src / flash / nor / at91samd.c

diff --git a/src/flash/nor/at91samd.c b/src/flash/nor/at91samd.c
index 62b3542cbb714f963b823807b69fc9d8dd0f2f72..cdc43b8b3edd4edadd287a08e88a023abd95cd8d 100644 (file)
--- a/src/flash/nor/at91samd.c
+++ b/src/flash/nor/at91samd.c
@@ -13,9 +13,7 @@
  *   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
@@ -76,6 +74,7 @@
 #define SAMD_SERIES_22         0x02
 #define SAMD_SERIES_10         0x02
 #define SAMD_SERIES_11         0x03
+#define SAMD_SERIES_09         0x04
 
 /* Device ID macros */
 #define SAMD_GET_PROCESSOR(id) (id >> 28)
@@ -90,6 +89,13 @@ struct samd_part {
        uint32_t ram_kb;
 };
 
+/* Known SAMD09 parts. DID reset values missing in RM, see
+ * https://github.com/avrxml/asf/blob/master/sam0/utils/cmsis/samd09/include/ */
+static const struct samd_part samd09_parts[] = {
+       { 0x0, "SAMD09D14A", 16, 4 },
+       { 0x7, "SAMD09C13A", 8, 4 },
+};
+
 /* Known SAMD10 parts */
 static const struct samd_part samd10_parts[] = {
        { 0x0, "SAMD10D14AMU", 16, 4 },
@@ -259,6 +265,8 @@ static const struct samd_family samd_families[] = {
                samd21_parts, ARRAY_SIZE(samd21_parts) },
        { SAMD_PROCESSOR_M0, SAMD_FAMILY_D, SAMD_SERIES_21,
                samr21_parts, ARRAY_SIZE(samr21_parts) },
+       { SAMD_PROCESSOR_M0, SAMD_FAMILY_D, SAMD_SERIES_09,
+               samd09_parts, ARRAY_SIZE(samd09_parts) },
        { SAMD_PROCESSOR_M0, SAMD_FAMILY_D, SAMD_SERIES_10,
                samd10_parts, ARRAY_SIZE(samd10_parts) },
        { SAMD_PROCESSOR_M0, SAMD_FAMILY_D, SAMD_SERIES_11,
@@ -1010,10 +1018,15 @@ COMMAND_HANDLER(samd_handle_bootloader_command)
 COMMAND_HANDLER(samd_handle_reset_deassert)
 {
        struct target *target = get_current_target(CMD_CTX);
-       struct armv7m_common *armv7m = target_to_armv7m(target);
        int retval = ERROR_OK;
        enum reset_types jtag_reset_config = jtag_get_reset_config();
 
+       /* If the target has been unresponsive before, try to re-establish
+        * communication now - CPU is held in reset by DSU, DAP is working */
+       if (!target_was_examined(target))
+               target_examine_one(target);
+       target_poll(target);
+
        /* In case of sysresetreq, debug retains state set in cortex_m_assert_reset()
         * so we just release reset held by DSU
         *
@@ -1022,9 +1035,9 @@ COMMAND_HANDLER(samd_handle_reset_deassert)
         * After vectreset DSU release is not needed however makes no harm
         */
        if (target->reset_halt && (jtag_reset_config & RESET_HAS_SRST)) {
-               retval = mem_ap_write_u32(armv7m->debug_ap, DCB_DHCSR, DBGKEY | C_HALT | C_DEBUGEN);
+               retval = target_write_u32(target, DCB_DHCSR, DBGKEY | C_HALT | C_DEBUGEN);
                if (retval == ERROR_OK)
-                       retval = mem_ap_write_u32(armv7m->debug_ap, DCB_DEMCR,
+                       retval = target_write_u32(target, DCB_DEMCR,
                                TRCENA | VC_HARDERR | VC_BUSERR | VC_CORERESET);
                /* do not return on error here, releasing DSU reset is more important */
        }