target/arm_adi_v5,arm_dap: introduce multidrop_targetsel and its configuration

[openocd.git] / src / target / arm_adi_v5.h

diff --git a/src/target/arm_adi_v5.h b/src/target/arm_adi_v5.h
index fa0a78a7e7227d3d92abe809d25121b4c9698865..1c96dc87ac8c0952d224c5702ef07473a98e0ef6 100644 (file)
--- a/src/target/arm_adi_v5.h
+++ b/src/target/arm_adi_v5.h
@@ -97,6 +97,11 @@
 #define DP_APSEL_MAX        (255)
 #define DP_APSEL_INVALID    (-1)
 
+#define DP_TARGETSEL_INVALID 0xFFFFFFFFU
+#define DP_TARGETSEL_DPID_MASK 0x0FFFFFFFU
+#define DP_TARGETSEL_INSTANCEID_MASK 0xF0000000U
+#define DP_TARGETSEL_INSTANCEID_SHIFT 28
+
 
 /* MEM-AP register addresses */
 #define MEM_AP_REG_CSW         0x00
@@ -324,6 +329,13 @@ struct adiv5_dap {
        /** Flag saying whether to ignore the syspwrupack flag in DAP. Some devices
         *  do not set this bit until later in the bringup sequence */
        bool ignore_syspwrupack;
+
+       /** Value to select DP in SWD multidrop mode or DP_TARGETSEL_INVALID */
+       uint32_t multidrop_targetsel;
+       /** TPARTNO and TDESIGNER fields of multidrop_targetsel have been configured */
+       bool multidrop_dp_id_valid;
+       /** TINSTANCE field of multidrop_targetsel has been configured */
+       bool multidrop_instance_id_valid;
 };
 
 /**
@@ -610,6 +622,12 @@ static inline struct adiv5_ap *dap_ap(struct adiv5_dap *dap, uint8_t ap_num)
        return &dap->ap[ap_num];
 }
 
+/** Check if SWD multidrop configuration is valid */
+static inline bool dap_is_multidrop(struct adiv5_dap *dap)
+{
+       return dap->multidrop_dp_id_valid && dap->multidrop_instance_id_valid;
+}
+
 /* Lookup CoreSight component */
 int dap_lookup_cs_component(struct adiv5_ap *ap,
                        target_addr_t dbgbase, uint8_t type, target_addr_t *addr, int32_t *idx);