1 /***************************************************************************
2 * Copyright (C) 2007-2009 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
30 int diag_printf(const char *fmt
, ...);
31 #define ZY1000_POKE(a, b) HAL_WRITE_UINT32(a, b); diag_printf("poke 0x%08x,0x%08x\n", a, b)
32 #define ZY1000_PEEK(a, b) HAL_READ_UINT32(a, b); diag_printf("peek 0x%08x = 0x%08x\n", a, b)
34 #define ZY1000_PEEK(a, b) HAL_READ_UINT32(a, b)
35 #define ZY1000_POKE(a, b) HAL_WRITE_UINT32(a, b)
40 /* redirect this to TCP/IP */
41 #define ZY1000_PEEK(a, b) b = 1;
42 #define ZY1000_POKE(a, b)
49 static __inline__
void waitIdle(void)
54 ZY1000_PEEK(ZY1000_JTAG_BASE
+ 0x10, empty
);
55 } while ((empty
& 0x100) == 0);
58 static __inline__
void waitQueue(void)
63 static __inline__
void sampleShiftRegister(void)
68 ZY1000_PEEK(ZY1000_JTAG_BASE
+ 0xc, dummy
);
72 static __inline__
void setCurrentState(enum tap_state state
)
77 if (state
== TAP_RESET
)
79 // The FPGA nor we know the current state of the CPU TAP
80 // controller. This will move it to TAP for sure.
82 // 5 should be enough here, 7 is what OpenOCD uses
86 sampleShiftRegister();
87 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0x8, (repeat
<< 8) | (a
<< 4) | a
);
92 * Enter state and cause repeat transitions *out* of that state. So if the endState != state, then
93 * the transition from state to endState counts as a transition out of state.
95 static __inline__
void shiftValueInner(const enum tap_state state
, const enum tap_state endState
, int repeat
, uint32_t value
)
101 sampleShiftRegister();
102 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0xc, value
);
105 if ((state
== TAP_DRSHIFT
) && (endState
!= TAP_DRSHIFT
))
108 setCurrentState(state
);
109 for (i
= 0; i
< repeat
; i
++)
113 if ((i
== repeat
-1) && (state
!= endState
))
117 /* shift out value */
119 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0x28, (((value
>> i
)&1) << 1) | tms
);
122 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0x28, 0);
124 //ZY1000_POKE(ZY1000_JTAG_BASE + 0x20, TAP_DRSHIFT); // set this state and things break => expected
125 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.
126 setCurrentState(endState
);
129 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0x8, (repeat
<< 8) | (a
<< 4) | b
);
133 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0x8, (repeat
<< 8) | (a
<< 4) | b
);
136 /* maximum debug version */
137 if ((repeat
> 0) && ((state
== TAP_DRSHIFT
)||(state
== TAP_SI
)))
140 /* sample shift register for every bit. */
141 for (i
= 0; i
< repeat
-1; i
++)
143 sampleShiftRegister();
144 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0xc, value
>> i
);
145 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0x8, (1 << 8) | (a
<< 4) | a
);
147 sampleShiftRegister();
148 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0xc, value
>> (repeat
-1));
149 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0x8, (1 << 8) | (a
<< 4) | b
);
152 sampleShiftRegister();
153 ZY1000_POKE(ZY1000_JTAG_BASE
+ 0x8, (repeat
<< 8) | (a
<< 4) | b
);
155 sampleShiftRegister();
161 static __inline__
void interface_jtag_add_dr_out_core(struct jtag_tap
*target_tap
,
164 const uint32_t *value
,
165 enum tap_state end_state
)
167 enum tap_state pause_state
= TAP_DRSHIFT
;
169 struct jtag_tap
*tap
, *nextTap
;
170 for (tap
= jtag_tap_next_enabled(NULL
); tap
!= NULL
; tap
= nextTap
)
172 nextTap
= jtag_tap_next_enabled(tap
);
175 pause_state
= end_state
;
177 if (tap
== target_tap
)
180 for (j
= 0; j
< (num_fields
-1); j
++)
182 shiftValueInner(TAP_DRSHIFT
, TAP_DRSHIFT
, num_bits
[j
], value
[j
]);
184 shiftValueInner(TAP_DRSHIFT
, pause_state
, num_bits
[j
], value
[j
]);
187 /* program the scan field to 1 bit length, and ignore it's value */
188 shiftValueInner(TAP_DRSHIFT
, pause_state
, 1, 0);
193 static __inline__
void interface_jtag_add_dr_out(struct jtag_tap
*target_tap
,
196 const uint32_t *value
,
197 enum tap_state end_state
)
200 int singletap
= (jtag_tap_next_enabled(jtag_tap_next_enabled(NULL
)) == NULL
);
201 if ((singletap
) && (num_fields
== 3))
203 /* used by embeddedice_write_reg_inner() */
204 shiftValueInner(TAP_DRSHIFT
, TAP_DRSHIFT
, num_bits
[0], value
[0]);
205 shiftValueInner(TAP_DRSHIFT
, TAP_DRSHIFT
, num_bits
[1], value
[1]);
206 shiftValueInner(TAP_DRSHIFT
, end_state
, num_bits
[2], value
[2]);
207 } else if ((singletap
) && (num_fields
== 2))
209 /* used by arm7 code */
210 shiftValueInner(TAP_DRSHIFT
, TAP_DRSHIFT
, num_bits
[0], value
[0]);
211 shiftValueInner(TAP_DRSHIFT
, end_state
, num_bits
[1], value
[1]);
214 interface_jtag_add_dr_out_core(target_tap
, num_fields
, num_bits
, value
, end_state
);
218 #define interface_jtag_add_callback(callback, in) callback(in)
220 #define interface_jtag_add_callback4(callback, in, data1, data2, data3) jtag_set_error(callback(in, data1, data2, data3))