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zy1000: remove obsolete debug code
[openocd.git] / src / jtag / zy1000 / jtag_minidriver.h
1 /***************************************************************************
2 * Copyright (C) 2007-2010 by Øyvind Harboe *
3 * *
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. *
8 * *
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. *
13 * *
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 ***************************************************************************/
19
20 /* used to test manual mode */
21 #define TEST_MANUAL() 0
22 #define VERBOSE(a)
23
24 #if BUILD_ECOSBOARD
25
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)
30
31 #else
32
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)
39
40 #endif
41
42
43
44 #if BUILD_ECOSBOARD
45 // FIFO empty?
46 static __inline__ void waitIdle(void)
47 {
48 uint32_t empty;
49 do
50 {
51 ZY1000_PEEK(ZY1000_JTAG_BASE + 0x10, empty);
52 } while ((empty & 0x100) == 0);
53 }
54
55 static __inline__ void zy1000_flush_readqueue(void)
56 {
57 /* Not used w/hardware fifo */
58 }
59 static __inline__ void zy1000_flush_callbackqueue(void)
60 {
61 /* Not used w/hardware fifo */
62 }
63 #else
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);
69 #endif
70
71 static __inline__ void waitQueue(void)
72 {
73 // waitIdle();
74 }
75
76 static __inline__ void sampleShiftRegister(void)
77 {
78 #if 0
79 uint32_t dummy;
80 waitIdle();
81 ZY1000_PEEK(ZY1000_JTAG_BASE + 0xc, dummy);
82 #endif
83 }
84
85 static __inline__ void setCurrentState(enum tap_state state)
86 {
87 uint32_t a;
88 a = state;
89 int repeat = 0;
90 if (state == TAP_RESET)
91 {
92 // The FPGA nor we know the current state of the CPU TAP
93 // controller. This will move it to TAP for sure.
94 //
95 // 5 should be enough here, 7 is what OpenOCD uses
96 repeat = 7;
97 }
98 waitQueue();
99 sampleShiftRegister();
100 ZY1000_POKE(ZY1000_JTAG_BASE + 0x8, (repeat << 8) | (a << 4) | a);
101
102 }
103
104 /*
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.
107 */
108 static __inline__ void shiftValueInner(const enum tap_state state, const enum tap_state endState, int repeat, uint32_t value)
109 {
110 uint32_t a,b;
111 a = state;
112 b = endState;
113 waitQueue();
114 sampleShiftRegister();
115 ZY1000_POKE(ZY1000_JTAG_BASE + 0xc, value);
116 #if 1
117 #if TEST_MANUAL()
118 if ((state == TAP_DRSHIFT) && (endState != TAP_DRSHIFT))
119 {
120 int i;
121 setCurrentState(state);
122 for (i = 0; i < repeat; i++)
123 {
124 int tms;
125 tms = 0;
126 if ((i == repeat-1) && (state != endState))
127 {
128 tms = 1;
129 }
130 /* shift out value */
131 waitIdle();
132 ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, (((value >> i)&1) << 1) | tms);
133 }
134 waitIdle();
135 ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 0);
136 waitIdle();
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);
140 } else
141 {
142 ZY1000_POKE(ZY1000_JTAG_BASE + 0x8, (repeat << 8) | (a << 4) | b);
143 }
144 #else
145 /* fast version */
146 ZY1000_POKE(ZY1000_JTAG_BASE + 0x8, (repeat << 8) | (a << 4) | b);
147 #endif
148 #else
149 /* maximum debug version */
150 if ((repeat > 0) && ((state == TAP_DRSHIFT)||(state == TAP_SI)))
151 {
152 int i;
153 /* sample shift register for every bit. */
154 for (i = 0; i < repeat-1; i++)
155 {
156 sampleShiftRegister();
157 ZY1000_POKE(ZY1000_JTAG_BASE + 0xc, value >> i);
158 ZY1000_POKE(ZY1000_JTAG_BASE + 0x8, (1 << 8) | (a << 4) | a);
159 }
160 sampleShiftRegister();
161 ZY1000_POKE(ZY1000_JTAG_BASE + 0xc, value >> (repeat-1));
162 ZY1000_POKE(ZY1000_JTAG_BASE + 0x8, (1 << 8) | (a << 4) | b);
163 } else
164 {
165 sampleShiftRegister();
166 ZY1000_POKE(ZY1000_JTAG_BASE + 0x8, (repeat << 8) | (a << 4) | b);
167 }
168 sampleShiftRegister();
169 #endif
170 }
171
172
173
174 static __inline__ void interface_jtag_add_dr_out_core(struct jtag_tap *target_tap,
175 int num_fields,
176 const int *num_bits,
177 const uint32_t *value,
178 enum tap_state end_state)
179 {
180 enum tap_state pause_state = TAP_DRSHIFT;
181
182 struct jtag_tap *tap, *nextTap;
183 for (tap = jtag_tap_next_enabled(NULL); tap!= NULL; tap = nextTap)
184 {
185 nextTap = jtag_tap_next_enabled(tap);
186 if (nextTap == NULL)
187 {
188 pause_state = end_state;
189 }
190 if (tap == target_tap)
191 {
192 int j;
193 for (j = 0; j < (num_fields-1); j++)
194 {
195 shiftValueInner(TAP_DRSHIFT, TAP_DRSHIFT, num_bits[j], value[j]);
196 }
197 shiftValueInner(TAP_DRSHIFT, pause_state, num_bits[j], value[j]);
198 } else
199 {
200 /* program the scan field to 1 bit length, and ignore it's value */
201 shiftValueInner(TAP_DRSHIFT, pause_state, 1, 0);
202 }
203 }
204 }
205
206 static __inline__ void interface_jtag_add_dr_out(struct jtag_tap *target_tap,
207 int num_fields,
208 const int *num_bits,
209 const uint32_t *value,
210 enum tap_state end_state)
211 {
212
213 int singletap = (jtag_tap_next_enabled(jtag_tap_next_enabled(NULL)) == NULL);
214 if ((singletap) && (num_fields == 3))
215 {
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))
221 {
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]);
225 } else
226 {
227 interface_jtag_add_dr_out_core(target_tap, num_fields, num_bits, value, end_state);
228 }
229 }
230
231 #if BUILD_ECOSBOARD
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))
234 #else
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)
237 #endif
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