cortex_m: fix autoincrement range of Cortex-M7

Cortex-M7 has autoincrement range only 1024 bytes,
surprisingly smaller than M3, M4.

Change-Id: I35ff1f0e093aac4af79f98eb3b8058d4295942d1
Signed-off-by: Tomas Vanek <vanekt@fbl.cz>
Reviewed-on: http://openocd.zylin.com/3737
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>

diff --git a/src/target/cortex_m.c b/src/target/cortex_m.c
index a6a9309e2c8aac0b0898ff2f561d8b544cf8c03d..4566e2e7cae22933db568ffec84e4afe4f9faf75 100644 (file)
--- a/src/target/cortex_m.c
+++ b/src/target/cortex_m.c
@@ -1976,10 +1976,14 @@ int cortex_m_examine(struct target *target)
                        armv7m->arm.core_cache->num_regs = ARMV7M_NUM_CORE_REGS_NOFP;
                }
 
-               if ((i == 3 || i == 4 || i == 7) && !armv7m->stlink) {
-                       /* Cortex-M3/M4/M7 have at least 4096 bytes autoincrement range,
-                        * s. ARM IHI 0031C: MEM-AP 7.2.2 */
-                       armv7m->debug_ap->tar_autoincr_block = (1 << 12);
+               if (!armv7m->stlink) {
+                       if (i == 3 || i == 4)
+                               /* Cortex-M3/M4 have 4096 bytes autoincrement range,
+                                * s. ARM IHI 0031C: MEM-AP 7.2.2 */
+                               armv7m->debug_ap->tar_autoincr_block = (1 << 12);
+                       else if (i == 7)
+                               /* Cortex-M7 has only 1024 bytes autoincrement range */
+                               armv7m->debug_ap->tar_autoincr_block = (1 << 10);
                }
 
                /* Configure trace modules */