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Retire jtag_add_dr_out
[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 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
18 ***************************************************************************/
19
20 /* used to test manual mode */
21 #define TEST_MANUAL() 0
22 #define VERBOSE(a)
23
24 #if BUILD_ZY1000_MASTER
25
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)
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 #if BUILD_ZY1000_MASTER
43 /* FIFO empty? */
44 static inline void waitIdle(void)
45 {
46 uint32_t empty;
47 do {
48 ZY1000_PEEK(ZY1000_JTAG_BASE + 0x10, empty);
49 } while ((empty & 0x100) == 0);
50 }
51
52 static inline void zy1000_flush_readqueue(void)
53 {
54 /* Not used w/hardware fifo */
55 }
56 static inline void zy1000_flush_callbackqueue(void)
57 {
58 /* Not used w/hardware fifo */
59 }
60 #else
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);
70 #endif
71
72 static inline void waitQueue(void)
73 {
74 /* waitIdle(); */
75 }
76
77 static inline void sampleShiftRegister(void)
78 {
79 #if 0
80 uint32_t dummy;
81 waitIdle();
82 ZY1000_PEEK(ZY1000_JTAG_BASE + 0xc, dummy);
83 #endif
84 }
85
86 static inline void setCurrentState(enum tap_state state)
87 {
88 uint32_t a;
89 a = state;
90 int repeat = 0;
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. */
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,
109 const enum tap_state endState,
110 int repeat,
111 uint32_t value)
112 {
113 uint32_t a, b;
114 a = state;
115 b = endState;
116 waitQueue();
117 sampleShiftRegister();
118 ZY1000_POKE(ZY1000_JTAG_BASE + 0xc, value);
119 #if 1
120 #if TEST_MANUAL()
121 if ((state == TAP_DRSHIFT) && (endState != TAP_DRSHIFT)) {
122 int i;
123 setCurrentState(state);
124 for (i = 0; i < repeat; i++) {
125 int tms;
126 tms = 0;
127 if ((i == repeat-1) && (state != endState))
128 tms = 1;
129 /* shift out value */
130 waitIdle();
131 ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, (((value >> i)&1) << 1) | tms);
132 }
133 waitIdle();
134 ZY1000_POKE(ZY1000_JTAG_BASE + 0x28, 0);
135 waitIdle();
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
142 * break. */
143 setCurrentState(endState);
144 } else
145 ZY1000_POKE(ZY1000_JTAG_BASE + 0x8, (repeat << 8) | (a << 4) | b);
146
147 #else
148 /* fast version */
149 ZY1000_POKE(ZY1000_JTAG_BASE + 0x8, (repeat << 8) | (a << 4) | b);
150 #endif
151 #else
152 /* maximum debug version */
153 if ((repeat > 0) && ((state == TAP_DRSHIFT) || (state == TAP_SI))) {
154 int i;
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);
160 }
161 sampleShiftRegister();
162 ZY1000_POKE(ZY1000_JTAG_BASE + 0xc, value >> (repeat-1));
163 ZY1000_POKE(ZY1000_JTAG_BASE + 0x8, (1 << 8) | (a << 4) | b);
164 } else {
165 sampleShiftRegister();
166 ZY1000_POKE(ZY1000_JTAG_BASE + 0x8, (repeat << 8) | (a << 4) | b);
167 }
168 sampleShiftRegister();
169 #endif
170 }
171
172 #if BUILD_ZY1000_MASTER
173 #define interface_jtag_add_callback(callback, in) callback(in)
174 #define interface_jtag_add_callback4(callback, in, data1, data2, \
175 data3) jtag_set_error(callback(in, data1, data2, data3))
176 #else
177 #define interface_jtag_add_callback(callback, in) zy1000_jtag_add_callback(callback, in)
178 #define interface_jtag_add_callback4(callback, in, data1, data2, data3) zy1000_jtag_add_callback4( \
179 callback, \
180 in, \
181 data1, \
182 data2, \
183 data3)
184 #endif
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