kinetis : Add timeouts to flash status checking in dap_syssec_kinetis_mdmap().

Change-Id: Ifc8fe7aa4c2a40a78fa0655435e82418f549bad3
Signed-off-by: Per Ekman <pekenator@gmail.com>
Reviewed-on: http://openocd.zylin.com/1819
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>

diff --git a/src/target/arm_adi_v5.c b/src/target/arm_adi_v5.c
index 0ca0ecc64f1798ff6e497c5caf202758aee04fb5..4e36d9d20d9988182343eb81cba6d732c67bdf6b 100644 (file)
--- a/src/target/arm_adi_v5.c
+++ b/src/target/arm_adi_v5.c
@@ -644,6 +644,8 @@ int mem_ap_sel_write_buf_u32_noincr(struct adiv5_dap *swjdp, uint8_t ap,
 #define MEM_CTRL_VLLSX_DBG_ACK (1<<6)
 #define MEM_CTRL_VLLSX_STAT_ACK        (1<<7)
 
+#define MDM_ACCESS_TIMEOUT     3000 /* ms */
+
 /**
  *
  */
@@ -651,6 +653,7 @@ int dap_syssec_kinetis_mdmap(struct adiv5_dap *dap)
 {
        uint32_t val;
        int retval;
+       int timeout = 0;
        enum reset_types jtag_reset_config = jtag_get_reset_config();
 
        dap_ap_select(dap, 1);
@@ -671,14 +674,21 @@ int dap_syssec_kinetis_mdmap(struct adiv5_dap *dap)
         * it's important that the device is out of
         * reset here
         */
-       do {
+       while (1) {
+               if (timeout++ > MDM_ACCESS_TIMEOUT) {
+                       LOG_DEBUG("MDMAP : flash ready timeout");
+                       return ERROR_FAIL;
+               }
                retval = dap_queue_ap_read(dap, MDM_REG_STAT, &val);
                if (retval != ERROR_OK)
                        return retval;
                dap_run(dap);
 
                LOG_DEBUG("MDM_REG_STAT %08" PRIX32, val);
-       } while (!(val & MDM_STAT_FREADY));
+               if (val & MDM_STAT_FREADY)
+                       break;
+               alive_sleep(1);
+       }
 
        if ((val & MDM_STAT_SYSSEC)) {
                LOG_DEBUG("MDMAP: system is secured, masserase needed");
@@ -695,8 +705,12 @@ int dap_syssec_kinetis_mdmap(struct adiv5_dap *dap)
                                dap_ap_select(dap, 0);
                                return ERROR_FAIL;
                        }
-
+                       timeout = 0;
                        while (1) {
+                               if (timeout++ > MDM_ACCESS_TIMEOUT) {
+                                       LOG_DEBUG("MDMAP : flash ready timeout");
+                                       return ERROR_FAIL;
+                               }
                                retval = dap_queue_ap_write(dap, MDM_REG_CTRL, MEM_CTRL_FMEIP);
                                if (retval != ERROR_OK)
                                        return retval;
@@ -710,9 +724,14 @@ int dap_syssec_kinetis_mdmap(struct adiv5_dap *dap)
 
                                if ((val & 1))
                                        break;
+                               alive_sleep(1);
                        }
-
+                       timeout = 0;
                        while (1) {
+                               if (timeout++ > MDM_ACCESS_TIMEOUT) {
+                                       LOG_DEBUG("MDMAP : flash ready timeout");
+                                       return ERROR_FAIL;
+                               }
                                retval = dap_queue_ap_write(dap, MDM_REG_CTRL, 0);
                                if (retval != ERROR_OK)
                                        return retval;
@@ -732,6 +751,7 @@ int dap_syssec_kinetis_mdmap(struct adiv5_dap *dap)
 
                                if (val == 0x00)
                                        break;
+                               alive_sleep(1);
                        }
                }
        }