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,