#endif
+
+/* The software needs to check if it's in RCLK mode or not */
+static bool zy1000_rclk = false;
+
static int zy1000_khz(int khz, int *jtag_speed)
{
if (khz == 0)
/* flush JTAG master FIFO before setting speed */
waitIdle();
+ zy1000_rclk = false;
+
if (speed == 0)
{
/*0 means RCLK*/
- speed = 0;
ZY1000_POKE(ZY1000_JTAG_BASE + 0x10, 0x100);
+ zy1000_rclk = true;
LOG_DEBUG("jtag_speed using RCLK");
}
else
uint32_t empty;
waitIdle();
- ZY1000_PEEK(ZY1000_JTAG_BASE + 0x10, empty);
- /* clear JTAG error register */
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x400);
- if ((empty&0x400) != 0)
+ if (zy1000_rclk)
{
- LOG_WARNING("RCLK timeout");
- /* the error is informative only as we don't want to break the firmware if there
- * is a false positive.
+ /* Only check for errors when using RCLK to speed up
+ * jtag over TCP/IP
*/
-// return ERROR_FAIL;
+ ZY1000_PEEK(ZY1000_JTAG_BASE + 0x10, empty);
+ /* clear JTAG error register */
+ ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x400);
+
+ if ((empty&0x400) != 0)
+ {
+ LOG_WARNING("RCLK timeout");
+ /* the error is informative only as we don't want to break the firmware if there
+ * is a false positive.
+ */
+ // return ERROR_FAIL;
+ }
}
return ERROR_OK;
}
int arm11_run_instr_data_to_core_noack_inner(struct jtag_tap * tap, uint32_t opcode, uint32_t * data, size_t count)
{
-#if 0
- int arm11_run_instr_data_to_core_noack_inner_default(struct jtag_tap * tap, uint32_t opcode, uint32_t * data, size_t count);
- return arm11_run_instr_data_to_core_noack_inner_default(tap, opcode, data, count);
-#else
- static const int bits[] = {32, 2};
- uint32_t values[] = {0, 0};
-
- /* FIX!!!!!! the target_write_memory() API started this nasty problem
- * with unaligned uint32_t * pointers... */
- const uint8_t *t = (const uint8_t *)data;
-
-
/* bypass bits before and after */
int pre_bits;
int post_bits;
jtag_pre_post_bits(tap, &pre_bits, &post_bits);
-
- bool found = false;
- struct jtag_tap *cur_tap, *nextTap;
- for (cur_tap = jtag_tap_next_enabled(NULL); cur_tap!= NULL; cur_tap = nextTap)
- {
- nextTap = jtag_tap_next_enabled(cur_tap);
- if (cur_tap == tap)
- {
- found = true;
- } else
- {
- if (found)
- {
- post_bits++;
- } else
- {
- pre_bits++;
- }
- }
- }
-
post_bits+=2;
-
- while (--count > 0)
+ if ((pre_bits > 32) || (post_bits > 32))
{
- shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, pre_bits, 0);
-
- uint32_t value;
- value = *t++;
- value |= (*t++<<8);
- value |= (*t++<<16);
- value |= (*t++<<24);
+ int arm11_run_instr_data_to_core_noack_inner_default(struct jtag_tap * tap, uint32_t opcode, uint32_t * data, size_t count);
+ return arm11_run_instr_data_to_core_noack_inner_default(tap, opcode, data, count);
+ } else
+ {
+ static const int bits[] = {32, 2};
+ uint32_t values[] = {0, 0};
- shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, 32, value);
- /* minimum 2 bits */
- shiftValueInner(TAP_DRSHIFT, TAP_DRPAUSE, post_bits, 0);
+ /* FIX!!!!!! the target_write_memory() API started this nasty problem
+ * with unaligned uint32_t * pointers... */
+ const uint8_t *t = (const uint8_t *)data;
+ while (--count > 0)
+ {
#if 1
- /* copy & paste from arm11_dbgtap.c */
- //TAP_DREXIT2, TAP_DRUPDATE, TAP_IDLE, TAP_IDLE, TAP_IDLE, TAP_DRSELECT, TAP_DRCAPTURE, TAP_DRSHIFT
+ /* Danger! This code doesn't update cmd_queue_cur_state, so
+ * invoking jtag_add_pathmove() before jtag_add_dr_out() after
+ * this loop would fail!
+ */
+ shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, pre_bits, 0);
- waitIdle();
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 1);
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 1);
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 0);
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 0);
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 0);
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 1);
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 0);
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 0);
- /* we don't have to wait for the queue to empty here. waitIdle(); */
- ZY1000_POKE(ZY1000_JTAG_BASE + 0x20, TAP_DRSHIFT);
+ uint32_t value;
+ value = *t++;
+ value |= (*t++<<8);
+ value |= (*t++<<16);
+ value |= (*t++<<24);
+
+ shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, 32, value);
+ /* minimum 2 bits */
+ shiftValueInner(TAP_DRSHIFT, TAP_DRPAUSE, post_bits, 0);
+
+ /* copy & paste from arm11_dbgtap.c */
+ //TAP_DREXIT2, TAP_DRUPDATE, TAP_IDLE, TAP_IDLE, TAP_IDLE, TAP_DRSELECT, TAP_DRCAPTURE, TAP_DRSHIFT
+ /* KLUDGE! we have to flush the fifo or the Nios CPU locks up.
+ * This is probably a bug in the Avalon bus(cross clocking bridge?)
+ * or in the jtag registers module.
+ */
+ waitIdle();
+ ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 1);
+ ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 1);
+ ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 0);
+ ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 0);
+ ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 0);
+ ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 1);
+ ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 0);
+ ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 0);
+ /* we don't have to wait for the queue to empty here */
+ ZY1000_POKE(ZY1000_JTAG_BASE + 0x20, TAP_DRSHIFT);
+ waitIdle();
#else
- static const tap_state_t arm11_MOVE_DRPAUSE_IDLE_DRPAUSE_with_delay[] =
- {
- TAP_DREXIT2, TAP_DRUPDATE, TAP_IDLE, TAP_IDLE, TAP_IDLE, TAP_DRSELECT, TAP_DRCAPTURE, TAP_DRSHIFT
- };
-
- jtag_add_pathmove(ARRAY_SIZE(arm11_MOVE_DRPAUSE_IDLE_DRPAUSE_with_delay),
- arm11_MOVE_DRPAUSE_IDLE_DRPAUSE_with_delay);
+ static const tap_state_t arm11_MOVE_DRPAUSE_IDLE_DRPAUSE_with_delay[] =
+ {
+ TAP_DREXIT2, TAP_DRUPDATE, TAP_IDLE, TAP_IDLE, TAP_IDLE, TAP_DRSELECT, TAP_DRCAPTURE, TAP_DRSHIFT
+ };
+
+ values[0] = *t++;
+ values[0] |= (*t++<<8);
+ values[0] |= (*t++<<16);
+ values[0] |= (*t++<<24);
+
+ jtag_add_dr_out(tap,
+ 2,
+ bits,
+ values,
+ TAP_IDLE);
+
+ jtag_add_pathmove(ARRAY_SIZE(arm11_MOVE_DRPAUSE_IDLE_DRPAUSE_with_delay),
+ arm11_MOVE_DRPAUSE_IDLE_DRPAUSE_with_delay);
#endif
- }
+ }
- values[0] = *t++;
- values[0] |= (*t++<<8);
- values[0] |= (*t++<<16);
- values[0] |= (*t++<<24);
+ values[0] = *t++;
+ values[0] |= (*t++<<8);
+ values[0] |= (*t++<<16);
+ values[0] |= (*t++<<24);
- /* This will happen on the last iteration updating the current tap state
- * so we don't have to track it during the common code path */
- jtag_add_dr_out(tap,
- 2,
- bits,
- values,
- TAP_IDLE);
+ /* This will happen on the last iteration updating cmd_queue_cur_state
+ * so we don't have to track it during the common code path
+ */
+ jtag_add_dr_out(tap,
+ 2,
+ bits,
+ values,
+ TAP_IDLE);
- return jtag_execute_queue();
-#endif
+ return jtag_execute_queue();
+ }
}
ZY1000_CMD_POKE = 0x0,
ZY1000_CMD_PEEK = 0x8,
ZY1000_CMD_SLEEP = 0x1,
+ ZY1000_CMD_WAITIDLE = 2
};
}
}
+/* By sending the wait to the server, we avoid a readback
+ * of status. Radically improves performance for this operation
+ * with long ping times.
+ */
+void waitIdle(void)
+{
+ tcpip_open();
+ if (!writeLong((ZY1000_CMD_WAITIDLE << 24)))
+ {
+ fprintf(stderr, "Could not write to zy1000 server\n");
+ exit(-1);
+ }
+}
+
+
+
uint32_t zy1000_tcpin(uint32_t address)
{
tcpip_open();
jtag_sleep(data);
break;
}
+ case ZY1000_CMD_WAITIDLE:
+ {
+ waitIdle();
+ break;
+ }
default:
return;
}
projects / fw / openocd / blobdiff