adi_v5_swd: Avoid special handling the SELECT cache during connect

[openocd.git] / src / target / adi_v5_swd.c

diff --git a/src/target/adi_v5_swd.c b/src/target/adi_v5_swd.c
index f7a199c56c4735d0ddd4e5202c8df9bcff3365ad..771b46090e175c2d91b694fda67517afb08e286b 100644 (file)
--- a/src/target/adi_v5_swd.c
+++ b/src/target/adi_v5_swd.c
@@ -112,9 +112,9 @@ static int swd_connect(struct adiv5_dap *dap)
        /* Note, debugport_init() does setup too */
        jtag_interface->swd->switch_seq(JTAG_TO_SWD);
 
-       /* Make sure we don't try to perform any other accesses before the DPIDR read. */
+       /* Clear link state, including the SELECT cache. */
        dap->do_reconnect = false;
-       dap->select = 0;
+       dap->select = DP_SELECT_INVALID;
 
        swd_queue_dp_read(dap, DP_IDCODE, &idcode);
 
@@ -123,8 +123,6 @@ static int swd_connect(struct adiv5_dap *dap)
 
        status = swd_run_inner(dap);
 
-       dap->select = DP_SELECT_INVALID;
-
        if (status == ERROR_OK) {
                LOG_INFO("SWD IDCODE %#8.8" PRIx32, idcode);
                dap->do_reconnect = false;
@@ -160,7 +158,8 @@ static int swd_queue_ap_abort(struct adiv5_dap *dap, uint8_t *ack)
 /** Select the DP register bank matching bits 7:4 of reg. */
 static void swd_queue_dp_bankselect(struct adiv5_dap *dap, unsigned reg)
 {
-       if (reg == DP_SELECT)
+       /* Only register address 4 is banked. */
+       if ((reg & 0xf) != 4)
                return;
 
        uint32_t select_dp_bank = (reg & 0x000000F0) >> 4;