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
24 #if BUILD_ZY1000_MASTER
26 #define ZY1000_PEEK(a, b) do {b = *((volatile uint32_t *)(a)); } while (0)
27 #define ZY1000_POKE(a, b) do {*((volatile uint32_t *)(a)) = b; } while (0)
28 extern volatile void *zy1000_jtag_master
;
29 #define ZY1000_JTAG_BASE ((unsigned long)zy1000_jtag_master)
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)
42 #if BUILD_ZY1000_MASTER
44 static inline void waitIdle(void)
48 ZY1000_PEEK(ZY1000_JTAG_BASE
+ 0x10, empty
);
49 } while ((empty
& 0x100) == 0);
52 static inline void zy1000_flush_readqueue(void)
54 /* Not used w/hardware fifo */
56 static inline void zy1000_flush_callbackqueue(void)
58 /* Not used w/hardware fifo */
61 extern void waitIdle(void);
62 void zy1000_flush_readqueue(void);
63 void zy1000_flush_callbackqueue(void);
64 void zy1000_jtag_add_callback4(jtag_callback_t callback
,
65 jtag_callback_data_t data0
,
66 jtag_callback_data_t data1
,
67 jtag_callback_data_t data2
,
68 jtag_callback_data_t data3
);
69 void zy1000_jtag_add_callback(jtag_callback1_t callback
, jtag_callback_data_t data0
);
72 static inline void waitQueue(void)
77 static inline void sampleShiftRegister(void)
82 ZY1000_PEEK(ZY1000_JTAG_BASE
+ 0xc, dummy
);
86 static inline void setCurrentState(enum tap_state state
)
91 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
,
109 const enum tap_state endState
,
117 sampleShiftRegister();
118 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0xc, value
);
121 if ((state
== TAP_DRSHIFT
) && (endState
!= TAP_DRSHIFT
)) {
123 setCurrentState(state
);
124 for (i
= 0; i
< repeat
; i
++) {
127 if ((i
== repeat
-1) && (state
!= endState
))
129 /* shift out value */
131 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0x28, (((value
>> i
)&1) << 1) | tms
);
134 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0x28, 0);
136 /* ZY1000_POKE(ZY1000_JTAG_BASE + 0x20, TAP_DRSHIFT); // set this state and things
137 * break => expected */
138 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0x20, TAP_DRPAUSE
); /* set this and things will
139 * work => expected. Not
140 * setting this is not
141 * sufficient to make things
143 setCurrentState(endState
);
145 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0x8, (repeat
<< 8) | (a
<< 4) | b
);
149 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0x8, (repeat
<< 8) | (a
<< 4) | b
);
152 /* maximum debug version */
153 if ((repeat
> 0) && ((state
== TAP_DRSHIFT
) || (state
== TAP_SI
))) {
155 /* sample shift register for every bit. */
156 for (i
= 0; i
< repeat
-1; i
++) {
157 sampleShiftRegister();
158 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0xc, value
>> i
);
159 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0x8, (1 << 8) | (a
<< 4) | a
);
161 sampleShiftRegister();
162 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0xc, value
>> (repeat
-1));
163 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();
172 static inline void interface_jtag_add_dr_out_core(struct jtag_tap
*target_tap
,
175 const uint32_t *value
,
176 enum tap_state end_state
)
178 enum tap_state pause_state
= TAP_DRSHIFT
;
180 struct jtag_tap
*tap
, *nextTap
;
181 for (tap
= jtag_tap_next_enabled(NULL
); tap
!= NULL
; tap
= nextTap
) {
182 nextTap
= jtag_tap_next_enabled(tap
);
184 pause_state
= end_state
;
185 if (tap
== target_tap
) {
187 for (j
= 0; j
< (num_fields
-1); j
++)
188 shiftValueInner(TAP_DRSHIFT
, TAP_DRSHIFT
, num_bits
[j
], value
[j
]);
189 shiftValueInner(TAP_DRSHIFT
, pause_state
, num_bits
[j
], value
[j
]);
191 /* program the scan field to 1 bit length, and ignore it's value */
192 shiftValueInner(TAP_DRSHIFT
, pause_state
, 1, 0);
197 static inline void interface_jtag_add_dr_out(struct jtag_tap
*target_tap
,
200 const uint32_t *value
,
201 enum tap_state end_state
)
204 int singletap
= (jtag_tap_next_enabled(jtag_tap_next_enabled(NULL
)) == NULL
);
205 if ((singletap
) && (num_fields
== 3)) {
206 /* used by embeddedice_write_reg_inner() */
207 shiftValueInner(TAP_DRSHIFT
, TAP_DRSHIFT
, num_bits
[0], value
[0]);
208 shiftValueInner(TAP_DRSHIFT
, TAP_DRSHIFT
, num_bits
[1], value
[1]);
209 shiftValueInner(TAP_DRSHIFT
, end_state
, num_bits
[2], value
[2]);
210 } else if ((singletap
) && (num_fields
== 2)) {
211 /* used by arm7 code */
212 shiftValueInner(TAP_DRSHIFT
, TAP_DRSHIFT
, num_bits
[0], value
[0]);
213 shiftValueInner(TAP_DRSHIFT
, end_state
, num_bits
[1], value
[1]);
215 interface_jtag_add_dr_out_core(target_tap
, num_fields
, num_bits
, value
, end_state
);
218 #if BUILD_ZY1000_MASTER
219 #define interface_jtag_add_callback(callback, in) callback(in)
220 #define interface_jtag_add_callback4(callback, in, data1, data2, \
221 data3) jtag_set_error(callback(in, data1, data2, data3))
223 #define interface_jtag_add_callback(callback, in) zy1000_jtag_add_callback(callback, in)
224 #define interface_jtag_add_callback4(callback, in, data1, data2, data3) zy1000_jtag_add_callback4( \
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