From: Aaron Carroll <aaronc@cse.unsw.edu.au>
Date: Wed, 2 Feb 2011 07:16:25 +0000 (+1100)
Subject: cortex_m3: allow scripts to override reset
X-Git-Tag: v0.5.0-rc1~199
X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=commitdiff_plain;h=efcea8306af922d867ff93073959dad774e10f0c

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 f6918afaa2..5fd56e4007 100644
--- 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);