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-rw-r--r--src/target/cortex_m3.c21
1 files changed, 12 insertions, 9 deletions
diff --git a/src/target/cortex_m3.c b/src/target/cortex_m3.c
index 5789870f..53ecd0a9 100644
--- a/src/target/cortex_m3.c
+++ b/src/target/cortex_m3.c
@@ -512,16 +512,19 @@ int cortex_m3_poll(target_t *target)
}
}
- /*
- if (cortex_m3->dcb_dhcsr & S_SLEEP)
- target->state = TARGET_SLEEP;
- */
+ /* REVISIT when S_SLEEP is set, it's in a Sleep or DeepSleep state.
+ * How best to model low power modes?
+ */
-#if 0
- /* Read Debug Fault Status Register, added to figure out the lockup when running flashtest.script */
- mem_ap_read_atomic_u32(swjdp, NVIC_DFSR, &cortex_m3->nvic_dfsr);
- LOG_DEBUG("dcb_dhcsr 0x%x, nvic_dfsr 0x%x, target->state: %s", cortex_m3->dcb_dhcsr, cortex_m3->nvic_dfsr, target_state_name(target));
-#endif
+ if (target->state == TARGET_UNKNOWN)
+ {
+ /* check if processor is retiring instructions */
+ if (cortex_m3->dcb_dhcsr & S_RETIRE_ST)
+ {
+ target->state = TARGET_RUNNING;
+ return ERROR_OK;
+ }
+ }
return ERROR_OK;
}