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adi_v5: enforce check on AP number value

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The AP number value is restricted in 8 bits unsigned by ADI-v5
specification. Nevertheless, an "invalid" value is used by
target cortex-m to force an automatic detection of the AP.

Replace magic numbers by using new macros for AP max number and
for the value of AP invalid.
Check the value passed through -ap-num flag during configuration.

Change-Id: Ic19a367db0ab11c0ebd070750eca0647d25279a5
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/4668
Tested-by: jenkins
Reviewed-by: Matthias Welwarsky <matthias@welwarsky.de>
This commit is contained in:
Antonio Borneo
2018-09-05 15:37:15 +02:00
committed by Matthias Welwarsky
parent 2a3b709aa5
commit 11019a824d
5 changed files with 22 additions and 11 deletions
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2
src/target/cortex_m.c
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@@ -1986,7 +1986,7 @@ int cortex_m_examine(struct target *target)
/* stlink shares the examine handler but does not support
* all its calls */
if (!armv7m->stlink) {
if (cortex_m->apsel < 0) {
if (cortex_m->apsel == DP_APSEL_INVALID) {
/* Search for the MEM-AP */
retval = dap_find_ap(swjdp, AP_TYPE_AHB_AP, &armv7m->debug_ap);
if (retval != ERROR_OK) {