1 /***************************************************************************
2 * Copyright (C) 2007-2010 by Øyvind Harboe *
4 * This program is free software; you can redistribute it and/or modify *
5 * it under the terms of the GNU General Public License as published by *
6 * the Free Software Foundation; either version 2 of the License, or *
7 * (at your option) any later version. *
9 * This program is distributed in the hope that it will be useful, *
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
12 * GNU General Public License for more details. *
14 * You should have received a copy of the GNU General Public License *
15 * along with this program; if not, write to the *
16 * Free Software Foundation, Inc., *
17 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
18 ***************************************************************************/
20 /* used to test manual mode */
21 #define TEST_MANUAL() 0
26 #include <cyg/hal/hal_io.h> // low level i/o
27 #include <cyg/hal/hal_intr.h> // low level i/o
28 #define ZY1000_PEEK(a, b) HAL_READ_UINT32(a, b)
29 #define ZY1000_POKE(a, b) HAL_WRITE_UINT32(a, b)
33 /* redirect this to TCP/IP */
34 #define ZY1000_JTAG_BASE 0
35 extern void zy1000_tcpout(uint32_t address
, uint32_t data
);
36 extern uint32_t zy1000_tcpin(uint32_t address
);
37 #define ZY1000_PEEK(a, b) b=zy1000_tcpin(a)
38 #define ZY1000_POKE(a, b) zy1000_tcpout(a, b)
46 static __inline__
void waitIdle(void)
51 ZY1000_PEEK(ZY1000_JTAG_BASE
+ 0x10, empty
);
52 } while ((empty
& 0x100) == 0);
55 static __inline__
void zy1000_flush_readqueue(void)
57 /* Not used w/hardware fifo */
59 static __inline__
void zy1000_flush_callbackqueue(void)
61 /* Not used w/hardware fifo */
64 extern void waitIdle(void);
65 void zy1000_flush_readqueue(void);
66 void zy1000_flush_callbackqueue(void);
67 void zy1000_jtag_add_callback4(jtag_callback_t callback
, jtag_callback_data_t data0
, jtag_callback_data_t data1
, jtag_callback_data_t data2
, jtag_callback_data_t data3
);
68 void zy1000_jtag_add_callback(jtag_callback1_t callback
, jtag_callback_data_t data0
);
71 static __inline__
void waitQueue(void)
76 static __inline__
void sampleShiftRegister(void)
81 ZY1000_PEEK(ZY1000_JTAG_BASE
+ 0xc, dummy
);
85 static __inline__
void setCurrentState(enum tap_state state
)
90 if (state
== TAP_RESET
)
92 // The FPGA nor we know the current state of the CPU TAP
93 // controller. This will move it to TAP for sure.
95 // 5 should be enough here, 7 is what OpenOCD uses
99 sampleShiftRegister();
100 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0x8, (repeat
<< 8) | (a
<< 4) | a
);
105 * Enter state and cause repeat transitions *out* of that state. So if the endState != state, then
106 * the transition from state to endState counts as a transition out of state.
108 static __inline__
void shiftValueInner(const enum tap_state state
, const enum tap_state endState
, int repeat
, uint32_t value
)
114 sampleShiftRegister();
115 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0xc, value
);
118 if ((state
== TAP_DRSHIFT
) && (endState
!= TAP_DRSHIFT
))
121 setCurrentState(state
);
122 for (i
= 0; i
< repeat
; i
++)
126 if ((i
== repeat
-1) && (state
!= endState
))
130 /* shift out value */
132 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0x28, (((value
>> i
)&1) << 1) | tms
);
135 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0x28, 0);
137 //ZY1000_POKE(ZY1000_JTAG_BASE + 0x20, TAP_DRSHIFT); // set this state and things break => expected
138 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0x20, TAP_DRPAUSE
); // set this and things will work => expected. Not setting this is not sufficient to make things break.
139 setCurrentState(endState
);
142 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0x8, (repeat
<< 8) | (a
<< 4) | b
);
146 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0x8, (repeat
<< 8) | (a
<< 4) | b
);
149 /* maximum debug version */
150 if ((repeat
> 0) && ((state
== TAP_DRSHIFT
)||(state
== TAP_SI
)))
153 /* sample shift register for every bit. */
154 for (i
= 0; i
< repeat
-1; i
++)
156 sampleShiftRegister();
157 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0xc, value
>> i
);
158 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0x8, (1 << 8) | (a
<< 4) | a
);
160 sampleShiftRegister();
161 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0xc, value
>> (repeat
-1));
162 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0x8, (1 << 8) | (a
<< 4) | b
);
165 sampleShiftRegister();
166 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0x8, (repeat
<< 8) | (a
<< 4) | b
);
168 sampleShiftRegister();
174 static __inline__
void interface_jtag_add_dr_out_core(struct jtag_tap
*target_tap
,
177 const uint32_t *value
,
178 enum tap_state end_state
)
180 enum tap_state pause_state
= TAP_DRSHIFT
;
182 struct jtag_tap
*tap
, *nextTap
;
183 for (tap
= jtag_tap_next_enabled(NULL
); tap
!= NULL
; tap
= nextTap
)
185 nextTap
= jtag_tap_next_enabled(tap
);
188 pause_state
= end_state
;
190 if (tap
== target_tap
)
193 for (j
= 0; j
< (num_fields
-1); j
++)
195 shiftValueInner(TAP_DRSHIFT
, TAP_DRSHIFT
, num_bits
[j
], value
[j
]);
197 shiftValueInner(TAP_DRSHIFT
, pause_state
, num_bits
[j
], value
[j
]);
200 /* program the scan field to 1 bit length, and ignore it's value */
201 shiftValueInner(TAP_DRSHIFT
, pause_state
, 1, 0);
206 static __inline__
void interface_jtag_add_dr_out(struct jtag_tap
*target_tap
,
209 const uint32_t *value
,
210 enum tap_state end_state
)
213 int singletap
= (jtag_tap_next_enabled(jtag_tap_next_enabled(NULL
)) == NULL
);
214 if ((singletap
) && (num_fields
== 3))
216 /* used by embeddedice_write_reg_inner() */
217 shiftValueInner(TAP_DRSHIFT
, TAP_DRSHIFT
, num_bits
[0], value
[0]);
218 shiftValueInner(TAP_DRSHIFT
, TAP_DRSHIFT
, num_bits
[1], value
[1]);
219 shiftValueInner(TAP_DRSHIFT
, end_state
, num_bits
[2], value
[2]);
220 } else if ((singletap
) && (num_fields
== 2))
222 /* used by arm7 code */
223 shiftValueInner(TAP_DRSHIFT
, TAP_DRSHIFT
, num_bits
[0], value
[0]);
224 shiftValueInner(TAP_DRSHIFT
, end_state
, num_bits
[1], value
[1]);
227 interface_jtag_add_dr_out_core(target_tap
, num_fields
, num_bits
, value
, end_state
);
232 #define interface_jtag_add_callback(callback, in) callback(in)
233 #define interface_jtag_add_callback4(callback, in, data1, data2, data3) jtag_set_error(callback(in, data1, data2, data3))
235 #define interface_jtag_add_callback(callback, in) zy1000_jtag_add_callback(callback, in)
236 #define interface_jtag_add_callback4(callback, in, data1, data2, data3) zy1000_jtag_add_callback4(callback, in, data1, data2, data3)
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