1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * Copyright (C) 2008 by Spencer Oliver *
6 * spen@spen-soft.co.uk *
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 ***************************************************************************/
28 #include "target_type.h"
32 #define _DEBUG_INSTRUCTION_EXECUTION_
35 int arm966e_init_arch_info(target_t
*target
, arm966e_common_t
*arm966e
, jtag_tap_t
*tap
)
37 arm9tdmi_common_t
*arm9tdmi
= &arm966e
->arm9tdmi_common
;
38 arm7_9_common_t
*arm7_9
= &arm9tdmi
->arm7_9_common
;
40 arm9tdmi_init_arch_info(target
, arm9tdmi
, tap
);
42 arm9tdmi
->arch_info
= arm966e
;
43 arm966e
->common_magic
= ARM966E_COMMON_MAGIC
;
45 /* The ARM966E-S implements the ARMv5TE architecture which
46 * has the BKPT instruction, so we don't have to use a watchpoint comparator
48 arm7_9
->arm_bkpt
= ARMV5_BKPT(0x0);
49 arm7_9
->thumb_bkpt
= ARMV5_T_BKPT(0x0) & 0xffff;
54 static int arm966e_target_create(struct target_s
*target
, Jim_Interp
*interp
)
56 arm966e_common_t
*arm966e
= calloc(1,sizeof(arm966e_common_t
));
58 return arm966e_init_arch_info(target
, arm966e
, target
->tap
);
61 static int arm966e_get_arch_pointers(target_t
*target
,
62 armv4_5_common_t
**armv4_5_p
, arm7_9_common_t
**arm7_9_p
,
63 arm9tdmi_common_t
**arm9tdmi_p
, arm966e_common_t
**arm966e_p
)
65 armv4_5_common_t
*armv4_5
= target
->arch_info
;
66 arm7_9_common_t
*arm7_9
;
67 arm9tdmi_common_t
*arm9tdmi
;
68 arm966e_common_t
*arm966e
;
70 if (armv4_5
->common_magic
!= ARMV4_5_COMMON_MAGIC
)
75 arm7_9
= armv4_5
->arch_info
;
76 if (arm7_9
->common_magic
!= ARM7_9_COMMON_MAGIC
)
81 arm9tdmi
= arm7_9
->arch_info
;
82 if (arm9tdmi
->common_magic
!= ARM9TDMI_COMMON_MAGIC
)
87 arm966e
= arm9tdmi
->arch_info
;
88 if (arm966e
->common_magic
!= ARM966E_COMMON_MAGIC
)
95 *arm9tdmi_p
= arm9tdmi
;
101 static int arm966e_read_cp15(target_t
*target
, int reg_addr
, uint32_t *value
)
103 int retval
= ERROR_OK
;
104 armv4_5_common_t
*armv4_5
= target
->arch_info
;
105 arm7_9_common_t
*arm7_9
= armv4_5
->arch_info
;
106 arm_jtag_t
*jtag_info
= &arm7_9
->jtag_info
;
107 scan_field_t fields
[3];
108 uint8_t reg_addr_buf
= reg_addr
& 0x3f;
109 uint8_t nr_w_buf
= 0;
111 jtag_set_end_state(TAP_IDLE
);
112 if ((retval
= arm_jtag_scann(jtag_info
, 0xf)) != ERROR_OK
)
116 arm_jtag_set_instr(jtag_info
, jtag_info
->intest_instr
, NULL
);
118 fields
[0].tap
= jtag_info
->tap
;
119 fields
[0].num_bits
= 32;
120 fields
[0].out_value
= NULL
;
121 fields
[0].in_value
= NULL
;
123 fields
[1].tap
= jtag_info
->tap
;
124 fields
[1].num_bits
= 6;
125 fields
[1].out_value
= ®_addr_buf
;
126 fields
[1].in_value
= NULL
;
128 fields
[2].tap
= jtag_info
->tap
;
129 fields
[2].num_bits
= 1;
130 fields
[2].out_value
= &nr_w_buf
;
131 fields
[2].in_value
= NULL
;
133 jtag_add_dr_scan(3, fields
, jtag_get_end_state());
135 fields
[1].in_value
= (uint8_t *)value
;
137 jtag_add_dr_scan(3, fields
, jtag_get_end_state());
139 jtag_add_callback(arm_le_to_h_u32
, (jtag_callback_data_t
)value
);
142 #ifdef _DEBUG_INSTRUCTION_EXECUTION_
143 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
147 LOG_DEBUG("addr: 0x%x value: %8.8x", reg_addr
, *value
);
153 // EXPORTED to str9x (flash)
154 int arm966e_write_cp15(target_t
*target
, int reg_addr
, uint32_t value
)
156 int retval
= ERROR_OK
;
157 armv4_5_common_t
*armv4_5
= target
->arch_info
;
158 arm7_9_common_t
*arm7_9
= armv4_5
->arch_info
;
159 arm_jtag_t
*jtag_info
= &arm7_9
->jtag_info
;
160 scan_field_t fields
[3];
161 uint8_t reg_addr_buf
= reg_addr
& 0x3f;
162 uint8_t nr_w_buf
= 1;
163 uint8_t value_buf
[4];
165 buf_set_u32(value_buf
, 0, 32, value
);
167 jtag_set_end_state(TAP_IDLE
);
168 if ((retval
= arm_jtag_scann(jtag_info
, 0xf)) != ERROR_OK
)
172 arm_jtag_set_instr(jtag_info
, jtag_info
->intest_instr
, NULL
);
174 fields
[0].tap
= jtag_info
->tap
;
175 fields
[0].num_bits
= 32;
176 fields
[0].out_value
= value_buf
;
177 fields
[0].in_value
= NULL
;
179 fields
[1].tap
= jtag_info
->tap
;
180 fields
[1].num_bits
= 6;
181 fields
[1].out_value
= ®_addr_buf
;
182 fields
[1].in_value
= NULL
;
184 fields
[2].tap
= jtag_info
->tap
;
185 fields
[2].num_bits
= 1;
186 fields
[2].out_value
= &nr_w_buf
;
187 fields
[2].in_value
= NULL
;
189 jtag_add_dr_scan(3, fields
, jtag_get_end_state());
191 #ifdef _DEBUG_INSTRUCTION_EXECUTION_
192 LOG_DEBUG("addr: 0x%x value: %8.8x", reg_addr
, value
);
198 static int arm966e_handle_cp15_command(struct command_context_s
*cmd_ctx
,
199 char *cmd
, char **args
, int argc
)
202 target_t
*target
= get_current_target(cmd_ctx
);
203 armv4_5_common_t
*armv4_5
;
204 arm7_9_common_t
*arm7_9
;
205 arm9tdmi_common_t
*arm9tdmi
;
206 arm966e_common_t
*arm966e
;
207 arm_jtag_t
*jtag_info
;
209 if (arm966e_get_arch_pointers(target
, &armv4_5
, &arm7_9
, &arm9tdmi
, &arm966e
) != ERROR_OK
)
211 command_print(cmd_ctx
, "current target isn't an ARM966e target");
215 jtag_info
= &arm7_9
->jtag_info
;
217 if (target
->state
!= TARGET_HALTED
)
219 command_print(cmd_ctx
, "target must be stopped for \"%s\" command", cmd
);
223 /* one or more argument, access a single register (write if second argument is given */
227 COMMAND_PARSE_NUMBER(u32
, args
[0], address
);
232 if ((retval
= arm966e_read_cp15(target
, address
, &value
)) != ERROR_OK
)
234 command_print(cmd_ctx
, "couldn't access reg %i", address
);
237 if ((retval
= jtag_execute_queue()) != ERROR_OK
)
242 command_print(cmd_ctx
, "%i: %8.8" PRIx32
"", address
, value
);
247 COMMAND_PARSE_NUMBER(u32
, args
[1], value
);
248 if ((retval
= arm966e_write_cp15(target
, address
, value
)) != ERROR_OK
)
250 command_print(cmd_ctx
, "couldn't access reg %i", address
);
253 command_print(cmd_ctx
, "%i: %8.8" PRIx32
"", address
, value
);
260 /** Registers commands used to access coprocessor resources. */
261 int arm966e_register_commands(struct command_context_s
*cmd_ctx
)
264 command_t
*arm966e_cmd
;
266 retval
= arm9tdmi_register_commands(cmd_ctx
);
267 arm966e_cmd
= register_command(cmd_ctx
, NULL
, "arm966e",
269 "arm966e specific commands");
270 register_command(cmd_ctx
, arm966e_cmd
, "cp15",
271 arm966e_handle_cp15_command
, COMMAND_EXEC
,
272 "display/modify cp15 register <num> [value]");
277 /** Holds methods for ARM966 targets. */
278 target_type_t arm966e_target
=
283 .arch_state
= armv4_5_arch_state
,
285 .target_request_data
= arm7_9_target_request_data
,
288 .resume
= arm7_9_resume
,
291 .assert_reset
= arm7_9_assert_reset
,
292 .deassert_reset
= arm7_9_deassert_reset
,
293 .soft_reset_halt
= arm7_9_soft_reset_halt
,
295 .get_gdb_reg_list
= armv4_5_get_gdb_reg_list
,
297 .read_memory
= arm7_9_read_memory
,
298 .write_memory
= arm7_9_write_memory
,
299 .bulk_write_memory
= arm7_9_bulk_write_memory
,
300 .checksum_memory
= arm7_9_checksum_memory
,
301 .blank_check_memory
= arm7_9_blank_check_memory
,
303 .run_algorithm
= armv4_5_run_algorithm
,
305 .add_breakpoint
= arm7_9_add_breakpoint
,
306 .remove_breakpoint
= arm7_9_remove_breakpoint
,
307 .add_watchpoint
= arm7_9_add_watchpoint
,
308 .remove_watchpoint
= arm7_9_remove_watchpoint
,
310 .register_commands
= arm966e_register_commands
,
311 .target_create
= arm966e_target_create
,
312 .init_target
= arm9tdmi_init_target
,
313 .examine
= arm9tdmi_examine
,
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