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ULINK driver: Implement JTAG_PATHMOVE command 

Signed-off-by: Martin Schmölzer <martin.schmoelzer@student.tuwien.ac.at>
__archive__
Martin Schmoelzer 2011-08-23 16:53:03 +02:00 committed by Øyvind Harboe
parent 118a9a9ca0
commit d1bd5569b3
1 changed files with 51 additions and 1 deletions
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52
src/jtag/drivers/ulink.c
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@ -1533,7 +1533,57 @@ int ulink_queue_reset(struct ulink *device, struct jtag_command *cmd)
*/
int ulink_queue_pathmove(struct ulink *device, struct jtag_command *cmd)
{
// TODO: Implement this!
int ret, i, num_states, batch_size, state_count;
tap_state_t *path;
uint8_t tms_sequence;
num_states = cmd->cmd.pathmove->num_states;
path = cmd->cmd.pathmove->path;
state_count = 0;
while (num_states > 0) {
tms_sequence = 0;
/* Determine batch size */
if (num_states >= 8) {
batch_size = 8;
}
else {
batch_size = num_states;
}
for (i = 0; i < batch_size; i++) {
if (tap_state_transition(tap_get_state(), false) == path[state_count]) {
/* Append '0' transition: clear bit 'i' in tms_sequence */
buf_set_u32(&tms_sequence, i, 1, 0x0);
}
else if (tap_state_transition(tap_get_state(), true)
== path[state_count]) {
/* Append '1' transition: set bit 'i' in tms_sequence */
buf_set_u32(&tms_sequence, i, 1, 0x1);
}
else {
/* Invalid state transition */
LOG_ERROR("BUG: %s -> %s isn't a valid TAP state transition",
tap_state_name(tap_get_state()),
tap_state_name(path[state_count]));
return ERROR_FAIL;
}
tap_set_state(path[state_count]);
state_count++;
num_states--;
}
/* Append CLOCK_TMS command to OpenULINK command queue */
LOG_INFO(
"pathmove batch: count = %i, sequence = 0x%x", batch_size, tms_sequence);
ret = ulink_append_clock_tms_cmd(ulink_handle, batch_size, tms_sequence);
if (ret != ERROR_OK) {
return ret;
}
}
return ERROR_OK;
}