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driver: Add additional check for count of BYPASS devices 

At least one TAP shouldn't be in BYPASS mode

Change-Id: Ic882acbfc9b6a9f4b0c3bb4741a49f3981503c8c
Signed-off-by: Kirill Radkin <kirill.radkin@syntacore.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/7741
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
This commit is contained in:
Kirill Radkin 2023-06-16 12:09:32 +03:00 committed by Antonio Borneo
parent 9d5117a23e
commit b6ee137206
1 changed files with 9 additions and 0 deletions
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9
src/jtag/drivers/driver.c
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@ -116,12 +116,21 @@ int interface_jtag_add_dr_scan(struct jtag_tap *active, int in_num_fields,
/* count devices in bypass */
size_t bypass_devices = 0;
size_t all_devices = 0;
for (struct jtag_tap *tap = jtag_tap_next_enabled(NULL); tap; tap = jtag_tap_next_enabled(tap)) {
all_devices++;
if (tap->bypass)
bypass_devices++;
}
if (all_devices == bypass_devices) {
LOG_ERROR("At least one TAP shouldn't be in BYPASS mode");
return ERROR_FAIL;
}
struct jtag_command *cmd = cmd_queue_alloc(sizeof(struct jtag_command));
struct scan_command *scan = cmd_queue_alloc(sizeof(struct scan_command));
struct scan_field *out_fields = cmd_queue_alloc((in_num_fields + bypass_devices) * sizeof(struct scan_field));