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- Log -----------------------------------------------------------------
commit 4423e05d9df8803e2311e70d5a2ffc55a92e5676
Author: Tomas Vanek <va...@fb...>
Date: Mon Nov 28 10:54:48 2022 +0100
jtag/drivers/jlink: allow SWD multidrop
SW-DPv2 and SWJ-DPv2 devices do not reply to DP_TARGETSEL write cmd.
Ignore the received ACK after TARGETSEL write.
While on it, use swd_ack_to_error_code() for unified error code
translation of the received ACK value for all other commands.
Signed-off-by: Tomas Vanek <va...@fb...>
Change-Id: If978c88c8496e31581175385e59c32faebfd20aa
Reviewed-on: https://review.openocd.org/c/openocd/+/7383
Tested-by: jenkins
Reviewed-by: Antonio Borneo <bor...@gm...>
Reviewed-by: zapb <de...@za...>
diff --git a/src/jtag/drivers/jlink.c b/src/jtag/drivers/jlink.c
index 0a96ac255..243d1a46b 100644
--- a/src/jtag/drivers/jlink.c
+++ b/src/jtag/drivers/jlink.c
@@ -1976,6 +1976,8 @@ struct pending_scan_result {
void *buffer;
/** Offset in the destination buffer */
unsigned buffer_offset;
+ /** SWD command */
+ uint8_t swd_cmd;
};
#define MAX_PENDING_SCAN_RESULTS 256
@@ -2179,12 +2181,13 @@ static int jlink_swd_run_queue(void)
}
for (i = 0; i < pending_scan_results_length; i++) {
+ /* Devices do not reply to DP_TARGETSEL write cmd, ignore received ack */
+ bool check_ack = swd_cmd_returns_ack(pending_scan_results_buffer[i].swd_cmd);
int ack = buf_get_u32(tdo_buffer, pending_scan_results_buffer[i].first, 3);
-
- if (ack != SWD_ACK_OK) {
+ if (check_ack && ack != SWD_ACK_OK) {
LOG_DEBUG("SWD ack not OK: %d %s", ack,
ack == SWD_ACK_WAIT ? "WAIT" : ack == SWD_ACK_FAULT ? "FAULT" : "JUNK");
- queued_retval = ack == SWD_ACK_WAIT ? ERROR_WAIT : ERROR_FAIL;
+ queued_retval = swd_ack_to_error_code(ack);
goto skip;
} else if (pending_scan_results_buffer[i].length) {
uint32_t data = buf_get_u32(tdo_buffer, 3 + pending_scan_results_buffer[i].first, 32);
@@ -2221,6 +2224,7 @@ static void jlink_swd_queue_cmd(uint8_t cmd, uint32_t *dst, uint32_t data, uint3
if (queued_retval != ERROR_OK)
return;
+ pending_scan_results_buffer[pending_scan_results_length].swd_cmd = cmd;
cmd |= SWD_CMD_START | SWD_CMD_PARK;
jlink_queue_data_out(&cmd, 8);
-----------------------------------------------------------------------
Summary of changes:
src/jtag/drivers/jlink.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
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