From: Antonio Borneo <borneo.antonio@gmail.com>
Date: Thu, 20 Sep 2018 08:32:03 +0000 (+0200)
Subject: stlink: check for SWD support
X-Git-Tag: v0.11.0-rc1~935
X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=commitdiff_plain;h=1822c2fb9487d56b2787d114275dadf42cb55053

stlink: check for SWD support

The old ST-Link/V1 can either run an obsolete firmware with API_V1 or
a more recent firmware (from V1J11 to last V1J13) with API_V2.
SWD is only provided by the latter API.

Return error is SWD is selected on adapters that does not support it.

Change-Id: Iac4ba54d191ba80fb445a7cd3d8c2621dc7a4846
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/4705
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
---

diff --git a/src/jtag/drivers/stlink_usb.c b/src/jtag/drivers/stlink_usb.c
index 0eed68460f..49d7391fc7 100644
--- a/src/jtag/drivers/stlink_usb.c
+++ b/src/jtag/drivers/stlink_usb.c
@@ -2316,6 +2316,9 @@ static int stlink_usb_open(struct hl_interface_param_s *param, void **fd)
 
 	switch (h->transport) {
 		case HL_TRANSPORT_SWD:
+			if (h->version.jtag_api_max == STLINK_JTAG_API_V1)
+				err = ERROR_FAIL;
+			/* fall-through */
 		case HL_TRANSPORT_JTAG:
 			if (h->version.jtag == 0)
 				err = ERROR_FAIL;