1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * Copyright (C) 2007-2010 Øyvind Harboe *
6 * oyvind.harboe@zylin.com *
8 * Copyright (C) 2008 by Spencer Oliver *
9 * spen@spen-soft.co.uk *
11 * This program is free software; you can redistribute it and/or modify *
12 * it under the terms of the GNU General Public License as published by *
13 * the Free Software Foundation; either version 2 of the License, or *
14 * (at your option) any later version. *
16 * This program is distributed in the hope that it will be useful, *
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
19 * GNU General Public License for more details. *
21 * You should have received a copy of the GNU General Public License *
22 * along with this program. If not, see <http://www.gnu.org/licenses/>. *
23 ***************************************************************************/
25 #ifndef OPENOCD_TARGET_TARGET_TYPE_H
26 #define OPENOCD_TARGET_TARGET_TYPE_H
33 * This holds methods shared between all instances of a given target
34 * type. For example, all Cortex-M3 targets on a scan chain share
35 * the same method table.
39 * Name of this type of target. Do @b not access this
40 * field directly, use target_type_name() instead.
43 const char *deprecated_name;
45 /* poll current target status */
46 int (*poll)(struct target *target);
47 /* Invoked only from target_arch_state().
48 * Issue USER() w/architecture specific status. */
49 int (*arch_state)(struct target *target);
51 /* target request support */
52 int (*target_request_data)(struct target *target, uint32_t size, uint8_t *buffer);
54 /* halt will log a warning, but return ERROR_OK if the target is already halted. */
55 int (*halt)(struct target *target);
56 /* See target.c target_resume() for documentation. */
57 int (*resume)(struct target *target, int current, target_addr_t address,
58 int handle_breakpoints, int debug_execution);
59 int (*step)(struct target *target, int current, target_addr_t address,
60 int handle_breakpoints);
61 /* target reset control. assert reset can be invoked when OpenOCD and
62 * the target is out of sync.
64 * A typical example is that the target was power cycled while OpenOCD
65 * thought the target was halted or running.
67 * assert_reset() can therefore make no assumptions whatsoever about the
70 * Before assert_reset() for the target is invoked, a TRST/tms and
71 * chain validation is executed. TRST should not be asserted
72 * during target assert unless there is no way around it due to
73 * the way reset's are configured.
76 int (*assert_reset)(struct target *target);
78 * The implementation is responsible for polling the
79 * target such that target->state reflects the
82 * Otherwise the following would fail, as there will not
83 * be any "poll" invoked inbetween the "reset run" and
88 int (*deassert_reset)(struct target *target);
89 int (*soft_reset_halt)(struct target *target);
92 * Target architecture for GDB.
94 * The string returned by this function will not be automatically freed;
95 * if dynamic allocation is used for this value, it must be managed by
96 * the target, ideally by caching the result for subsequent calls.
98 const char *(*get_gdb_arch)(struct target *target);
101 * Target register access for GDB. Do @b not call this function
102 * directly, use target_get_gdb_reg_list() instead.
104 * Danger! this function will succeed even if the target is running
105 * and return a register list with dummy values.
107 * The reason is that GDB connection will fail without a valid register
108 * list, however it is after GDB is connected that monitor commands can
109 * be run to properly initialize the target
111 int (*get_gdb_reg_list)(struct target *target, struct reg **reg_list[],
112 int *reg_list_size, enum target_register_class reg_class);
115 * Same as get_gdb_reg_list, but doesn't read the register values.
117 int (*get_gdb_reg_list_noread)(struct target *target,
118 struct reg **reg_list[], int *reg_list_size,
119 enum target_register_class reg_class);
121 /* target memory access
122 * size: 1 = byte (8bit), 2 = half-word (16bit), 4 = word (32bit)
123 * count: number of items of <size>
127 * Target memory read callback. Do @b not call this function
128 * directly, use target_read_memory() instead.
130 int (*read_memory)(struct target *target, target_addr_t address,
131 uint32_t size, uint32_t count, uint8_t *buffer);
133 * Target memory write callback. Do @b not call this function
134 * directly, use target_write_memory() instead.
136 int (*write_memory)(struct target *target, target_addr_t address,
137 uint32_t size, uint32_t count, const uint8_t *buffer);
139 /* Default implementation will do some fancy alignment to improve performance, target can override */
140 int (*read_buffer)(struct target *target, target_addr_t address,
141 uint32_t size, uint8_t *buffer);
143 /* Default implementation will do some fancy alignment to improve performance, target can override */
144 int (*write_buffer)(struct target *target, target_addr_t address,
145 uint32_t size, const uint8_t *buffer);
147 int (*checksum_memory)(struct target *target, target_addr_t address,
148 uint32_t count, uint32_t *checksum);
149 int (*blank_check_memory)(struct target *target,
150 struct target_memory_check_block *blocks, int num_blocks,
151 uint8_t erased_value);
154 * target break-/watchpoint control
155 * rw: 0 = write, 1 = read, 2 = access
157 * Target must be halted while this is invoked as this
158 * will actually set up breakpoints on target.
160 * The breakpoint hardware will be set up upon adding the
163 * Upon GDB connection all breakpoints/watchpoints are cleared.
165 int (*add_breakpoint)(struct target *target, struct breakpoint *breakpoint);
166 int (*add_context_breakpoint)(struct target *target, struct breakpoint *breakpoint);
167 int (*add_hybrid_breakpoint)(struct target *target, struct breakpoint *breakpoint);
169 /* remove breakpoint. hw will only be updated if the target
170 * is currently halted.
171 * However, this method can be invoked on unresponsive targets.
173 int (*remove_breakpoint)(struct target *target, struct breakpoint *breakpoint);
175 /* add watchpoint ... see add_breakpoint() comment above. */
176 int (*add_watchpoint)(struct target *target, struct watchpoint *watchpoint);
178 /* remove watchpoint. hw will only be updated if the target
179 * is currently halted.
180 * However, this method can be invoked on unresponsive targets.
182 int (*remove_watchpoint)(struct target *target, struct watchpoint *watchpoint);
184 /* Find out just hit watchpoint. After the target hits a watchpoint, the
185 * information could assist gdb to locate where the modified/accessed memory is.
187 int (*hit_watchpoint)(struct target *target, struct watchpoint **hit_watchpoint);
190 * Target algorithm support. Do @b not call this method directly,
191 * use target_run_algorithm() instead.
193 int (*run_algorithm)(struct target *target, int num_mem_params,
194 struct mem_param *mem_params, int num_reg_params,
195 struct reg_param *reg_param, target_addr_t entry_point,
196 target_addr_t exit_point, int timeout_ms, void *arch_info);
197 int (*start_algorithm)(struct target *target, int num_mem_params,
198 struct mem_param *mem_params, int num_reg_params,
199 struct reg_param *reg_param, target_addr_t entry_point,
200 target_addr_t exit_point, void *arch_info);
201 int (*wait_algorithm)(struct target *target, int num_mem_params,
202 struct mem_param *mem_params, int num_reg_params,
203 struct reg_param *reg_param, target_addr_t exit_point,
204 int timeout_ms, void *arch_info);
206 const struct command_registration *commands;
208 /* called when target is created */
209 int (*target_create)(struct target *target, Jim_Interp *interp);
211 /* called for various config parameters */
212 /* returns JIM_CONTINUE - if option not understood */
213 /* otherwise: JIM_OK, or JIM_ERR, */
214 int (*target_jim_configure)(struct target *target, Jim_GetOptInfo *goi);
216 /* target commands specifically handled by the target */
217 /* returns JIM_OK, or JIM_ERR, or JIM_CONTINUE - if option not understood */
218 int (*target_jim_commands)(struct target *target, Jim_GetOptInfo *goi);
221 * This method is used to perform target setup that requires
224 * This may be called multiple times. It is called after the
225 * scan chain is initially validated, or later after the target
226 * is enabled by a JRC. It may also be called during some
227 * parts of the reset sequence.
229 * For one-time initialization tasks, use target_was_examined()
230 * and target_set_examined(). For example, probe the hardware
231 * before setting up chip-specific state, and then set that
232 * flag so you don't do that again.
234 int (*examine)(struct target *target);
236 /* Set up structures for target.
238 * It is illegal to talk to the target at this stage as this fn is invoked
239 * before the JTAG chain has been examined/verified
241 int (*init_target)(struct command_context *cmd_ctx, struct target *target);
244 * Free all the resources allocated by the target.
246 * @param target The target to deinit
248 void (*deinit_target)(struct target *target);
250 /* translate from virtual to physical address. Default implementation is successful
251 * no-op(i.e. virtual==physical).
253 int (*virt2phys)(struct target *target, target_addr_t address, target_addr_t *physical);
255 /* read directly from physical memory. caches are bypassed and untouched.
257 * If the target does not support disabling caches, leaving them untouched,
258 * then minimally the actual physical memory location will be read even
259 * if cache states are unchanged, flushed, etc.
261 * Default implementation is to call read_memory.
263 int (*read_phys_memory)(struct target *target, target_addr_t phys_address,
264 uint32_t size, uint32_t count, uint8_t *buffer);
267 * same as read_phys_memory, except that it writes...
269 int (*write_phys_memory)(struct target *target, target_addr_t phys_address,
270 uint32_t size, uint32_t count, const uint8_t *buffer);
272 int (*mmu)(struct target *target, int *enabled);
274 /* after reset is complete, the target can check if things are properly set up.
276 * This can be used to check if e.g. DCC memory writes have been enabled for
277 * arm7/9 targets, which they really should except in the most contrived
280 int (*check_reset)(struct target *target);
282 /* get GDB file-I/O parameters from target
284 int (*get_gdb_fileio_info)(struct target *target, struct gdb_fileio_info *fileio_info);
286 /* pass GDB file-I/O response to target
288 int (*gdb_fileio_end)(struct target *target, int retcode, int fileio_errno, bool ctrl_c);
290 /* do target profiling
292 int (*profiling)(struct target *target, uint32_t *samples,
293 uint32_t max_num_samples, uint32_t *num_samples, uint32_t seconds);
295 /* Return the number of address bits this target supports. This will
296 * typically be 32 for 32-bit targets, and 64 for 64-bit targets. If not
297 * implemented, it's assumed to be 32. */
298 unsigned (*address_bits)(struct target *target);
301 #endif /* OPENOCD_TARGET_TARGET_TYPE_H */