From: Tarek BOCHKATI <tarek.bouchkati@st.com>
Date: Tue, 12 Jan 2021 10:57:18 +0000 (+0100)
Subject: cortex_m: [FIX] ARMv8-M does not support VECTRESET
X-Git-Url: https://git.gag.com/?a=commitdiff_plain;h=2dc9c1df81b6458875233fc3710ab9d3e871743d;p=fw%2Fopenocd

cortex_m: [FIX] ARMv8-M does not support VECTRESET

ref: Arm®v8-M Architecture Reference Manual (DDI0553B.m)
     D1.2.3: AIRCR, Application Interrupt and Reset Control Register
             Bit [0] is RES0

Change-Id: I6ef451b2c114487e2732852a60e86c292ffa6a50
Signed-off-by: Tarek BOCHKATI <tarek.bouchkati@st.com>
Reviewed-on: http://openocd.zylin.com/6014
Tested-by: jenkins
Reviewed-by: Tarek BOCHKATI <tarek.bouchkati@gmail.com>
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
---

diff --git a/src/target/cortex_m.c b/src/target/cortex_m.c
index ac308b43b..ce2c426ce 100644
--- a/src/target/cortex_m.c
+++ b/src/target/cortex_m.c
@@ -2011,8 +2011,8 @@ int cortex_m_examine(struct target *target)
 		}
 		LOG_DEBUG("cpuid: 0x%8.8" PRIx32 "", cpuid);
 
-		/* VECTRESET is not supported on Cortex-M0, M0+ and M1 */
-		cortex_m->vectreset_supported = i > 1;
+		/* VECTRESET is supported only on ARMv7-M cores */
+		cortex_m->vectreset_supported = !armv7m->arm.is_armv8m && !armv7m->arm.is_armv6m;
 
 		if (i == 4) {
 			target_read_u32(target, MVFR0, &mvfr0);