cortex_m3: allow scripts to override reset

If a handler for the reset-assert event it present, skip the usual reset
handling.  This is needed, for example, for board-level resets.

Signed-off-by: Aaron Carroll <aaronc@cse.unsw.edu.au>

diff --git a/src/target/cortex_m3.c b/src/target/cortex_m3.c
index f6918afaa29420630dedb33207bad818ec0155c3..5fd56e4007cccee6b211a72168897cc79cec1492 100644 (file)
--- a/src/target/cortex_m3.c
+++ b/src/target/cortex_m3.c
@@ -927,6 +927,16 @@ static int cortex_m3_assert_reset(struct target *target)
 
        enum reset_types jtag_reset_config = jtag_get_reset_config();
 
+       if (target_has_event_action(target, TARGET_EVENT_RESET_ASSERT)) {
+               /* allow scripts to override the reset event */
+
+               target_handle_event(target, TARGET_EVENT_RESET_ASSERT);
+               register_cache_invalidate(cortex_m3->armv7m.core_cache);
+               target->state = TARGET_RESET;
+
+               return ERROR_OK;
+       }
+
        /* Enable debug requests */
        int retval;
        retval = mem_ap_read_atomic_u32(swjdp, DCB_DHCSR, &cortex_m3->dcb_dhcsr);