1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
26 #include "arm7_9_common.h"
30 #include "embeddedice.h"
39 #define _DEBUG_INSTRUCTION_EXECUTION_
43 int arm966e_register_commands(struct command_context_s
*cmd_ctx
);
45 /* forward declarations */
46 int arm966e_target_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
, struct target_s
*target
);
47 int arm966e_init_target(struct command_context_s
*cmd_ctx
, struct target_s
*target
);
48 int arm966e_quit(void);
50 target_type_t arm966e_target
=
55 .arch_state
= armv4_5_arch_state
,
58 .resume
= arm7_9_resume
,
61 .assert_reset
= arm7_9_assert_reset
,
62 .deassert_reset
= arm7_9_deassert_reset
,
63 .soft_reset_halt
= arm7_9_soft_reset_halt
,
64 .prepare_reset_halt
= arm7_9_prepare_reset_halt
,
66 .get_gdb_reg_list
= armv4_5_get_gdb_reg_list
,
68 .read_memory
= arm7_9_read_memory
,
69 .write_memory
= arm7_9_write_memory
,
70 .bulk_write_memory
= arm7_9_bulk_write_memory
,
72 .run_algorithm
= armv4_5_run_algorithm
,
74 .add_breakpoint
= arm7_9_add_breakpoint
,
75 .remove_breakpoint
= arm7_9_remove_breakpoint
,
76 .add_watchpoint
= arm7_9_add_watchpoint
,
77 .remove_watchpoint
= arm7_9_remove_watchpoint
,
79 .register_commands
= arm966e_register_commands
,
80 .target_command
= arm966e_target_command
,
81 .init_target
= arm966e_init_target
,
85 int arm966e_init_target(struct command_context_s
*cmd_ctx
, struct target_s
*target
)
87 arm9tdmi_init_target(cmd_ctx
, target
);
92 int arm966e_quit(void)
98 int arm966e_init_arch_info(target_t
*target
, arm966e_common_t
*arm966e
, int chain_pos
, char *variant
)
100 arm9tdmi_common_t
*arm9tdmi
= &arm966e
->arm9tdmi_common
;
101 arm7_9_common_t
*arm7_9
= &arm9tdmi
->arm7_9_common
;
103 arm9tdmi_init_arch_info(target
, arm9tdmi
, chain_pos
, variant
);
105 arm9tdmi
->arch_info
= arm966e
;
106 arm966e
->common_magic
= ARM966E_COMMON_MAGIC
;
108 /* The ARM966E-S implements the ARMv5TE architecture which
109 * has the BKPT instruction, so we don't have to use a watchpoint comparator
111 arm7_9
->arm_bkpt
= ARMV5_BKPT(0x0);
112 arm7_9
->thumb_bkpt
= ARMV5_T_BKPT(0x0) & 0xffff;
114 arm7_9
->sw_bkpts_use_wp
= 0;
115 arm7_9
->sw_bkpts_enabled
= 1;
120 int arm966e_target_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
, struct target_s
*target
)
123 char *variant
= NULL
;
124 arm966e_common_t
*arm966e
= malloc(sizeof(arm966e_common_t
));
128 ERROR("'target arm966e' requires at least one additional argument");
132 chain_pos
= strtoul(args
[3], NULL
, 0);
137 DEBUG("chain_pos: %i, variant: %s", chain_pos
, variant
);
139 arm966e_init_arch_info(target
, arm966e
, chain_pos
, variant
);
144 int arm966e_get_arch_pointers(target_t
*target
, armv4_5_common_t
**armv4_5_p
, arm7_9_common_t
**arm7_9_p
, arm9tdmi_common_t
**arm9tdmi_p
, arm966e_common_t
**arm966e_p
)
146 armv4_5_common_t
*armv4_5
= target
->arch_info
;
147 arm7_9_common_t
*arm7_9
;
148 arm9tdmi_common_t
*arm9tdmi
;
149 arm966e_common_t
*arm966e
;
151 if (armv4_5
->common_magic
!= ARMV4_5_COMMON_MAGIC
)
156 arm7_9
= armv4_5
->arch_info
;
157 if (arm7_9
->common_magic
!= ARM7_9_COMMON_MAGIC
)
162 arm9tdmi
= arm7_9
->arch_info
;
163 if (arm9tdmi
->common_magic
!= ARM9TDMI_COMMON_MAGIC
)
168 arm966e
= arm9tdmi
->arch_info
;
169 if (arm966e
->common_magic
!= ARM966E_COMMON_MAGIC
)
174 *armv4_5_p
= armv4_5
;
176 *arm9tdmi_p
= arm9tdmi
;
177 *arm966e_p
= arm966e
;
182 int arm966e_read_cp15(target_t
*target
, int reg_addr
, u32
*value
)
184 armv4_5_common_t
*armv4_5
= target
->arch_info
;
185 arm7_9_common_t
*arm7_9
= armv4_5
->arch_info
;
186 arm_jtag_t
*jtag_info
= &arm7_9
->jtag_info
;
187 scan_field_t fields
[3];
188 u8 reg_addr_buf
= reg_addr
& 0x3f;
191 jtag_add_end_state(TAP_RTI
);
192 arm_jtag_scann(jtag_info
, 0xf);
193 arm_jtag_set_instr(jtag_info
, jtag_info
->intest_instr
, NULL
);
195 fields
[0].device
= jtag_info
->chain_pos
;
196 fields
[0].num_bits
= 32;
197 fields
[0].out_value
= NULL
;
198 fields
[0].out_mask
= NULL
;
199 fields
[0].in_value
= NULL
;
200 fields
[0].in_check_value
= NULL
;
201 fields
[0].in_check_mask
= NULL
;
202 fields
[0].in_handler
= NULL
;
203 fields
[0].in_handler_priv
= NULL
;
205 fields
[1].device
= jtag_info
->chain_pos
;
206 fields
[1].num_bits
= 6;
207 fields
[1].out_value
= ®_addr_buf
;
208 fields
[1].out_mask
= NULL
;
209 fields
[1].in_value
= NULL
;
210 fields
[1].in_check_value
= NULL
;
211 fields
[1].in_check_mask
= NULL
;
212 fields
[1].in_handler
= NULL
;
213 fields
[1].in_handler_priv
= NULL
;
215 fields
[2].device
= jtag_info
->chain_pos
;
216 fields
[2].num_bits
= 1;
217 fields
[2].out_value
= &nr_w_buf
;
218 fields
[2].out_mask
= NULL
;
219 fields
[2].in_value
= NULL
;
220 fields
[2].in_check_value
= NULL
;
221 fields
[2].in_check_mask
= NULL
;
222 fields
[2].in_handler
= NULL
;
223 fields
[2].in_handler_priv
= NULL
;
225 jtag_add_dr_scan(3, fields
, -1, NULL
);
227 fields
[0].in_value
= (u8
*)value
;
229 jtag_add_dr_scan(3, fields
, -1, NULL
);
234 int arm966e_write_cp15(target_t
*target
, int reg_addr
, u32 value
)
236 armv4_5_common_t
*armv4_5
= target
->arch_info
;
237 arm7_9_common_t
*arm7_9
= armv4_5
->arch_info
;
238 arm_jtag_t
*jtag_info
= &arm7_9
->jtag_info
;
239 scan_field_t fields
[3];
240 u8 reg_addr_buf
= reg_addr
& 0x3f;
243 jtag_add_end_state(TAP_RTI
);
244 arm_jtag_scann(jtag_info
, 0xf);
245 arm_jtag_set_instr(jtag_info
, jtag_info
->intest_instr
, NULL
);
247 fields
[0].device
= jtag_info
->chain_pos
;
248 fields
[0].num_bits
= 32;
249 fields
[0].out_value
= (u8
*)&value
;
250 fields
[0].out_mask
= NULL
;
251 fields
[0].in_value
= NULL
;
252 fields
[0].in_check_value
= NULL
;
253 fields
[0].in_check_mask
= NULL
;
254 fields
[0].in_handler
= NULL
;
255 fields
[0].in_handler_priv
= NULL
;
257 fields
[1].device
= jtag_info
->chain_pos
;
258 fields
[1].num_bits
= 6;
259 fields
[1].out_value
= ®_addr_buf
;
260 fields
[1].out_mask
= NULL
;
261 fields
[1].in_value
= NULL
;
262 fields
[1].in_check_value
= NULL
;
263 fields
[1].in_check_mask
= NULL
;
264 fields
[1].in_handler
= NULL
;
265 fields
[1].in_handler_priv
= NULL
;
267 fields
[2].device
= jtag_info
->chain_pos
;
268 fields
[2].num_bits
= 1;
269 fields
[2].out_value
= &nr_w_buf
;
270 fields
[2].out_mask
= NULL
;
271 fields
[2].in_value
= NULL
;
272 fields
[2].in_check_value
= NULL
;
273 fields
[2].in_check_mask
= NULL
;
274 fields
[2].in_handler
= NULL
;
275 fields
[2].in_handler_priv
= NULL
;
277 jtag_add_dr_scan(3, fields
, -1, NULL
);
282 int arm966e_handle_cp15_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
285 target_t
*target
= get_current_target(cmd_ctx
);
286 armv4_5_common_t
*armv4_5
;
287 arm7_9_common_t
*arm7_9
;
288 arm9tdmi_common_t
*arm9tdmi
;
289 arm966e_common_t
*arm966e
;
290 arm_jtag_t
*jtag_info
;
292 if (arm966e_get_arch_pointers(target
, &armv4_5
, &arm7_9
, &arm9tdmi
, &arm966e
) != ERROR_OK
)
294 command_print(cmd_ctx
, "current target isn't an ARM966e target");
298 jtag_info
= &arm7_9
->jtag_info
;
300 if (target
->state
!= TARGET_HALTED
)
302 command_print(cmd_ctx
, "target must be stopped for \"%s\" command", cmd
);
306 /* one or more argument, access a single register (write if second argument is given */
309 int address
= strtoul(args
[0], NULL
, 0);
314 if ((retval
= arm966e_read_cp15(target
, address
, &value
)) != ERROR_OK
)
316 command_print(cmd_ctx
, "couldn't access reg %i", address
);
319 jtag_execute_queue();
321 command_print(cmd_ctx
, "%i: %8.8x", address
, value
);
325 u32 value
= strtoul(args
[1], NULL
, 0);
326 if ((retval
= arm966e_write_cp15(target
, address
, value
)) != ERROR_OK
)
328 command_print(cmd_ctx
, "couldn't access reg %i", address
);
331 command_print(cmd_ctx
, "%i: %8.8x", address
, value
);
338 int arm966e_register_commands(struct command_context_s
*cmd_ctx
)
341 command_t
*arm966e_cmd
;
343 retval
= arm9tdmi_register_commands(cmd_ctx
);
344 arm966e_cmd
= register_command(cmd_ctx
, NULL
, "arm966e", NULL
, COMMAND_ANY
, "arm966e specific commands");
345 register_command(cmd_ctx
, arm966e_cmd
, "cp15", arm966e_handle_cp15_command
, COMMAND_EXEC
, "display/modify cp15 register <num> [value]");
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