1 /***************************************************************************
2 * Copyright (C) 2005, 2007 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * Copyright (C) 2007 by Vincent Palatin *
6 * vincent.palatin_openocd@m4x.org *
8 * This program is free software; you can redistribute it and/or modify *
9 * it under the terms of the GNU General Public License as published by *
10 * the Free Software Foundation; either version 2 of the License, or *
11 * (at your option) any later version. *
13 * This program is distributed in the hope that it will be useful, *
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16 * GNU General Public License for more details. *
18 * You should have received a copy of the GNU General Public License *
19 * along with this program; if not, write to the *
20 * Free Software Foundation, Inc., *
21 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
22 ***************************************************************************/
31 /* ETM registers (JTAG protocol) */
36 ETM_TRIG_EVENT = 0x02,
39 ETM_SYS_CONFIG = 0x05,
40 ETM_TRACE_RESOURCE_CTRL = 0x06,
41 ETM_TRACE_EN_CTRL2 = 0x07,
42 ETM_TRACE_EN_EVENT = 0x08,
43 ETM_TRACE_EN_CTRL1 = 0x09,
44 /* optional FIFOFULL */
45 ETM_FIFOFULL_REGION = 0x0a,
46 ETM_FIFOFULL_LEVEL = 0x0b,
47 /* viewdata support */
48 ETM_VIEWDATA_EVENT = 0x0c,
49 ETM_VIEWDATA_CTRL1 = 0x0d,
50 ETM_VIEWDATA_CTRL2 = 0x0e, /* optional */
51 ETM_VIEWDATA_CTRL3 = 0x0f,
52 /* N pairs of ADDR_{COMPARATOR,ACCESS} registers */
53 ETM_ADDR_COMPARATOR_VALUE = 0x10,
54 ETM_ADDR_ACCESS_TYPE = 0x20,
55 /* N pairs of DATA_COMPARATOR_{VALUE,MASK} registers */
56 ETM_DATA_COMPARATOR_VALUE = 0x30,
57 ETM_DATA_COMPARATOR_MASK = 0x40,
58 /* N quads of COUNTER_{RELOAD_{VALUE,EVENT},ENABLE,VALUE} registers */
59 ETM_COUNTER_RELOAD_VALUE = 0x50,
60 ETM_COUNTER_ENABLE = 0x54,
61 ETM_COUNTER_RELOAD_EVENT = 0x58,
62 ETM_COUNTER_VALUE = 0x5c,
63 /* 6 sequencer event transitions */
64 ETM_SEQUENCER_EVENT = 0x60,
65 ETM_SEQUENCER_STATE = 0x67,
66 /* N triggered outputs */
67 ETM_EXTERNAL_OUTPUT = 0x68,
69 ETM_CONTEXTID_COMPARATOR_VALUE = 0x6c,
70 ETM_CONTEXTID_COMPARATOR_MASK = 0x6f,
77 const struct etm_reg_info *reg_info;
78 struct arm_jtag *jtag_info;
81 /* Subset of ETM_CTRL bit assignments. Many of these
82 * control the configuration of trace output, which
83 * hooks up either to ETB or to an external device.
85 * NOTE that these have evolved since the ~v1.3 defns ...
89 ETM_CTRL_POWERDOWN = (1 << 0),
90 ETM_CTRL_MONITOR_CPRT = (1 << 1),
92 /* bits 3:2 == trace type */
93 ETM_CTRL_TRACE_DATA = (1 << 2),
94 ETM_CTRL_TRACE_ADDR = (2 << 2),
95 ETM_CTRL_TRACE_MASK = (3 << 2),
97 /* Port width (bits 21 and 6:4) */
100 ETM_PORT_16BIT = 0x20,
101 ETM_PORT_24BIT = 0x30,
102 ETM_PORT_32BIT = 0x40,
103 ETM_PORT_48BIT = 0x50,
104 ETM_PORT_64BIT = 0x60,
105 ETM_PORT_1BIT = 0x00 | (1 << 21),
106 ETM_PORT_2BIT = 0x10 | (1 << 21),
107 ETM_PORT_WIDTH_MASK = 0x70 | (1 << 21),
109 ETM_CTRL_FIFOFULL_STALL = (1 << 7),
110 ETM_CTRL_BRANCH_OUTPUT = (1 << 8),
111 ETM_CTRL_DBGRQ = (1 << 9),
112 ETM_CTRL_ETM_PROG = (1 << 10),
113 ETM_CTRL_ETMEN = (1 << 11),
114 ETM_CTRL_CYCLE_ACCURATE = (1 << 12),
116 /* Clocking modes -- up to v2.1, bit 13 */
117 ETM_PORT_FULL_CLOCK = (0 << 13),
118 ETM_PORT_HALF_CLOCK = (1 << 13),
119 ETM_PORT_CLOCK_MASK = (1 << 13),
121 // bits 15:14 == context ID size used in tracing
122 ETM_CTRL_CONTEXTID_NONE = (0 << 14),
123 ETM_CTRL_CONTEXTID_8 = (1 << 14),
124 ETM_CTRL_CONTEXTID_16 = (2 << 14),
125 ETM_CTRL_CONTEXTID_32 = (3 << 14),
126 ETM_CTRL_CONTEXTID_MASK = (3 << 14),
128 /* Port modes -- bits 17:16, tied to clocking mode */
129 ETM_PORT_NORMAL = (0 << 16),
130 ETM_PORT_MUXED = (1 << 16),
131 ETM_PORT_DEMUXED = (2 << 16),
132 ETM_PORT_MODE_MASK = (3 << 16),
134 // bits 31:18 defined in v3.0 and later (e.g. ARM11+)
137 /* forward-declare ETM context */
140 struct etm_capture_driver
143 const struct command_registration *commands;
144 int (*init)(struct etm_context *etm_ctx);
145 trace_status_t (*status)(struct etm_context *etm_ctx);
146 int (*read_trace)(struct etm_context *etm_ctx);
147 int (*start_capture)(struct etm_context *etm_ctx);
148 int (*stop_capture)(struct etm_context *etm_ctx);
153 ETMV1_TRACESYNC_CYCLE = 0x1,
154 ETMV1_TRIGGER_CYCLE = 0x2,
157 struct etmv1_trace_data
159 uint8_t pipestat; /* bits 0-2 pipeline status */
160 uint16_t packet; /* packet data (4, 8 or 16 bit) */
161 int flags; /* ETMV1_TRACESYNC_CYCLE, ETMV1_TRIGGER_CYCLE */
164 /* describe a trace context
165 * if support for ETMv2 or ETMv3 is to be implemented,
166 * this will have to be split into version independent elements
167 * and a version specific part
171 struct target *target; /* target this ETM is connected to */
172 struct reg_cache *reg_cache; /* ETM register cache */
173 struct etm_capture_driver *capture_driver; /* driver used to access ETM data */
174 void *capture_driver_priv; /* capture driver private data */
175 trace_status_t capture_status; /* current state of capture run */
176 struct etmv1_trace_data *trace_data; /* trace data */
177 uint32_t trace_depth; /* number of cycles to be analyzed, 0 if no data available */
178 uint32_t control; /* shadow of ETM_CTRL */
179 int /*arm_state*/ core_state; /* current core state */
180 struct image *image; /* source for target opcodes */
181 uint32_t pipe_index; /* current trace cycle */
182 uint32_t data_index; /* cycle holding next data packet */
183 bool data_half; /* port half on a 16 bit port */
184 bool pc_ok; /* full PC has been acquired */
185 bool ptr_ok; /* whether last_ptr is valid */
186 uint8_t bcd_vers; /* e.g. 0x13 == ETMv1.3 */
187 uint32_t config; /* cache of ETM_CONFIG value */
188 uint32_t id; /* cache of ETM_ID value, or 0 */
189 uint32_t current_pc; /* current program counter */
190 uint32_t last_branch; /* last branch address output */
191 uint32_t last_branch_reason; /* type of last branch encountered */
192 uint32_t last_ptr; /* address of the last data access */
193 uint32_t last_instruction; /* index of last executed (to calc timings) */
196 /* PIPESTAT values */
209 /* branch reason values */
212 BR_NORMAL = 0x0, /* Normal PC change : periodic synchro (ETMv1.1) */
213 BR_ENABLE = 0x1, /* Trace has been enabled */
214 BR_RESTART = 0x2, /* Trace restarted after a FIFO overflow */
215 BR_NODEBUG = 0x3, /* ARM has exited for debug state */
216 BR_PERIOD = 0x4, /* Peridioc synchronization point (ETM >= v1.2)*/
217 BR_RSVD5 = 0x5, /* reserved */
218 BR_RSVD6 = 0x6, /* reserved */
219 BR_RSVD7 = 0x7, /* reserved */
220 } etmv1_branch_reason_t;
222 struct reg_cache* etm_build_reg_cache(struct target *target,
223 struct arm_jtag *jtag_info, struct etm_context *etm_ctx);
225 int etm_setup(struct target *target);
227 extern const struct command_registration etm_command_handlers[];
229 #define ERROR_ETM_INVALID_DRIVER (-1300)
230 #define ERROR_ETM_PORTMODE_NOT_SUPPORTED (-1301)
231 #define ERROR_ETM_CAPTURE_INIT_FAILED (-1302)
232 #define ERROR_ETM_ANALYSIS_FAILED (-1303)