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_deassert_reset(target_t *target);
47 int arm966e_assert_reset(target_t *target);
48 int arm966e_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct target_s *target);
49 int arm966e_init_target(struct command_context_s *cmd_ctx, struct target_s *target);
50 int arm966e_quit(void);
52 target_type_t arm966e_target =
57 .arch_state = armv4_5_arch_state,
60 .resume = arm7_9_resume,
63 .assert_reset = arm966e_assert_reset,
64 .deassert_reset = arm966e_deassert_reset,
65 .soft_reset_halt = arm7_9_soft_reset_halt,
67 .get_gdb_reg_list = armv4_5_get_gdb_reg_list,
69 .read_memory = arm7_9_read_memory,
70 .write_memory = arm7_9_write_memory,
71 .bulk_write_memory = arm7_9_bulk_write_memory,
73 .add_breakpoint = arm7_9_add_breakpoint,
74 .remove_breakpoint = arm7_9_remove_breakpoint,
75 .add_watchpoint = arm7_9_add_watchpoint,
76 .remove_watchpoint = arm7_9_remove_watchpoint,
78 .register_commands = arm966e_register_commands,
79 .target_command = arm966e_target_command,
80 .init_target = arm966e_init_target,
84 int arm966e_assert_reset(target_t *target)
86 armv4_5_common_t *armv4_5 = target->arch_info;
87 arm7_9_common_t *arm7_9 = armv4_5->arch_info;
88 arm9tdmi_common_t *arm9tdmi = arm7_9->arch_info;
89 arm966e_common_t *arm966e = arm9tdmi->arch_info;
90 reg_t *dbg_ctrl = &arm7_9->eice_cache->reg_list[EICE_DBG_CTRL];
92 int trst_asserted_with_srt = 0;
94 arm966e->monitor_mode_set = 1;
96 DEBUG("target->state: %s", target_state_strings[target->state]);
98 if (target->state == TARGET_HALTED || target->state == TARGET_UNKNOWN)
100 /* assert SRST and TRST */
101 /* system would get ouf sync if we didn't reset test-logic, too */
102 if ((retval = jtag_add_reset(1, 1)) != ERROR_OK)
104 if (retval == ERROR_JTAG_RESET_CANT_SRST)
106 WARNING("can't assert srst");
111 ERROR("unknown error");
115 jtag_add_sleep(5000);
116 if ((retval = jtag_add_reset(0, 1)) != ERROR_OK)
118 if (retval == ERROR_JTAG_RESET_WOULD_ASSERT_TRST)
120 WARNING("srst resets test logic, too");
121 retval = jtag_add_reset(1, 1);
122 trst_asserted_with_srt = 1;
128 if ((retval = jtag_add_reset(0, 1)) != ERROR_OK)
130 if (retval == ERROR_JTAG_RESET_WOULD_ASSERT_TRST)
132 WARNING("srst resets test logic, too");
133 retval = jtag_add_reset(1, 1);
134 trst_asserted_with_srt = 1;
137 if (retval == ERROR_JTAG_RESET_CANT_SRST)
139 WARNING("can't assert srst");
142 else if (retval != ERROR_OK)
144 ERROR("unknown error");
150 target->state = TARGET_RESET;
151 jtag_add_sleep(50000);
153 armv4_5_invalidate_core_regs(target);
155 if( trst_asserted_with_srt == 0 )
157 DEBUG("monitor mode needs clearing");
159 /* arm9e monitor mode enabled at reset */
160 embeddedice_read_reg(dbg_ctrl);
161 jtag_execute_queue();
163 if(buf_get_u32(dbg_ctrl->value, EICE_DBG_CONTROL_MONEN, 1))
165 buf_set_u32(dbg_ctrl->value, EICE_DBG_CONTROL_MONEN, 1, 0);
166 embeddedice_store_reg(dbg_ctrl);
167 DEBUG("monitor mode disabled");
169 arm966e->monitor_mode_set = 0;
175 int arm966e_deassert_reset(target_t *target)
177 armv4_5_common_t *armv4_5 = target->arch_info;
178 arm7_9_common_t *arm7_9 = armv4_5->arch_info;
179 arm9tdmi_common_t *arm9tdmi = arm7_9->arch_info;
180 arm966e_common_t *arm966e = arm9tdmi->arch_info;
181 reg_t *dbg_ctrl = &arm7_9->eice_cache->reg_list[EICE_DBG_CTRL];
183 arm7_9_deassert_reset( target );
185 if( arm966e->monitor_mode_set == 1 )
187 DEBUG("monitor mode needs clearing");
189 /* arm9e monitor mode enabled at reset */
190 embeddedice_read_reg(dbg_ctrl);
191 jtag_execute_queue();
193 if(buf_get_u32(dbg_ctrl->value, EICE_DBG_CONTROL_MONEN, 1))
195 buf_set_u32(dbg_ctrl->value, EICE_DBG_CONTROL_MONEN, 1, 0);
196 embeddedice_store_reg(dbg_ctrl);
197 arm966e->monitor_mode_set = 0;
198 DEBUG("monitor mode disabled");
205 int arm966e_init_target(struct command_context_s *cmd_ctx, struct target_s *target)
207 arm9tdmi_init_target(cmd_ctx, target);
212 int arm966e_quit(void)
218 int arm966e_init_arch_info(target_t *target, arm966e_common_t *arm966e, int chain_pos, char *variant)
220 arm9tdmi_common_t *arm9tdmi = &arm966e->arm9tdmi_common;
222 arm9tdmi_init_arch_info(target, arm9tdmi, chain_pos, variant);
224 arm9tdmi->arch_info = arm966e;
225 arm966e->common_magic = ARM966E_COMMON_MAGIC;
227 arm9tdmi->has_single_step = 0;
228 arm9tdmi->has_monitor_mode = 1;
233 int arm966e_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct target_s *target)
236 char *variant = NULL;
237 arm966e_common_t *arm966e = malloc(sizeof(arm966e_common_t));
241 ERROR("'target arm966e' requires at least one additional argument");
245 chain_pos = strtoul(args[3], NULL, 0);
250 DEBUG("chain_pos: %i, variant: %s", chain_pos, variant);
252 arm966e_init_arch_info(target, arm966e, chain_pos, variant);
257 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)
259 armv4_5_common_t *armv4_5 = target->arch_info;
260 arm7_9_common_t *arm7_9;
261 arm9tdmi_common_t *arm9tdmi;
262 arm966e_common_t *arm966e;
264 if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC)
269 arm7_9 = armv4_5->arch_info;
270 if (arm7_9->common_magic != ARM7_9_COMMON_MAGIC)
275 arm9tdmi = arm7_9->arch_info;
276 if (arm9tdmi->common_magic != ARM9TDMI_COMMON_MAGIC)
281 arm966e = arm9tdmi->arch_info;
282 if (arm966e->common_magic != ARM966E_COMMON_MAGIC)
287 *armv4_5_p = armv4_5;
289 *arm9tdmi_p = arm9tdmi;
290 *arm966e_p = arm966e;
295 int arm966e_read_cp15(target_t *target, int reg_addr, u32 *value)
297 armv4_5_common_t *armv4_5 = target->arch_info;
298 arm7_9_common_t *arm7_9 = armv4_5->arch_info;
299 arm_jtag_t *jtag_info = &arm7_9->jtag_info;
300 scan_field_t fields[3];
301 u8 reg_addr_buf = reg_addr & 0x3f;
304 jtag_add_end_state(TAP_RTI);
305 arm_jtag_scann(jtag_info, 0xf);
306 arm_jtag_set_instr(jtag_info, jtag_info->intest_instr);
308 fields[0].device = jtag_info->chain_pos;
309 fields[0].num_bits = 32;
310 fields[0].out_value = NULL;
311 fields[0].out_mask = NULL;
312 fields[0].in_value = NULL;
313 fields[0].in_check_value = NULL;
314 fields[0].in_check_mask = NULL;
315 fields[0].in_handler = NULL;
316 fields[0].in_handler_priv = NULL;
318 fields[1].device = jtag_info->chain_pos;
319 fields[1].num_bits = 6;
320 fields[1].out_value = ®_addr_buf;
321 fields[1].out_mask = NULL;
322 fields[1].in_value = NULL;
323 fields[1].in_check_value = NULL;
324 fields[1].in_check_mask = NULL;
325 fields[1].in_handler = NULL;
326 fields[1].in_handler_priv = NULL;
328 fields[2].device = jtag_info->chain_pos;
329 fields[2].num_bits = 1;
330 fields[2].out_value = &nr_w_buf;
331 fields[2].out_mask = NULL;
332 fields[2].in_value = NULL;
333 fields[2].in_check_value = NULL;
334 fields[2].in_check_mask = NULL;
335 fields[2].in_handler = NULL;
336 fields[2].in_handler_priv = NULL;
338 jtag_add_dr_scan(3, fields, -1);
340 fields[0].in_value = (u8*)value;
342 jtag_add_dr_scan(3, fields, -1);
347 int arm966e_write_cp15(target_t *target, int reg_addr, u32 value)
349 armv4_5_common_t *armv4_5 = target->arch_info;
350 arm7_9_common_t *arm7_9 = armv4_5->arch_info;
351 arm_jtag_t *jtag_info = &arm7_9->jtag_info;
352 scan_field_t fields[3];
353 u8 reg_addr_buf = reg_addr & 0x3f;
356 jtag_add_end_state(TAP_RTI);
357 arm_jtag_scann(jtag_info, 0xf);
358 arm_jtag_set_instr(jtag_info, jtag_info->intest_instr);
360 fields[0].device = jtag_info->chain_pos;
361 fields[0].num_bits = 32;
362 fields[0].out_value = (u8*)&value;
363 fields[0].out_mask = NULL;
364 fields[0].in_value = NULL;
365 fields[0].in_check_value = NULL;
366 fields[0].in_check_mask = NULL;
367 fields[0].in_handler = NULL;
368 fields[0].in_handler_priv = NULL;
370 fields[1].device = jtag_info->chain_pos;
371 fields[1].num_bits = 6;
372 fields[1].out_value = ®_addr_buf;
373 fields[1].out_mask = NULL;
374 fields[1].in_value = NULL;
375 fields[1].in_check_value = NULL;
376 fields[1].in_check_mask = NULL;
377 fields[1].in_handler = NULL;
378 fields[1].in_handler_priv = NULL;
380 fields[2].device = jtag_info->chain_pos;
381 fields[2].num_bits = 1;
382 fields[2].out_value = &nr_w_buf;
383 fields[2].out_mask = NULL;
384 fields[2].in_value = NULL;
385 fields[2].in_check_value = NULL;
386 fields[2].in_check_mask = NULL;
387 fields[2].in_handler = NULL;
388 fields[2].in_handler_priv = NULL;
390 jtag_add_dr_scan(3, fields, -1);
395 int arm966e_handle_cp15_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
398 target_t *target = get_current_target(cmd_ctx);
399 armv4_5_common_t *armv4_5;
400 arm7_9_common_t *arm7_9;
401 arm9tdmi_common_t *arm9tdmi;
402 arm966e_common_t *arm966e;
403 arm_jtag_t *jtag_info;
405 if (arm966e_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi, &arm966e) != ERROR_OK)
407 command_print(cmd_ctx, "current target isn't an ARM966e target");
411 jtag_info = &arm7_9->jtag_info;
413 if (target->state != TARGET_HALTED)
415 command_print(cmd_ctx, "target must be stopped for \"%s\" command", cmd);
419 /* one or more argument, access a single register (write if second argument is given */
422 int address = strtoul(args[0], NULL, 0);
427 if ((retval = arm966e_read_cp15(target, address, &value)) != ERROR_OK)
429 command_print(cmd_ctx, "couldn't access reg %i", address);
432 jtag_execute_queue();
434 command_print(cmd_ctx, "%i: %8.8x", address, value);
438 u32 value = strtoul(args[1], NULL, 0);
439 if ((retval = arm966e_write_cp15(target, address, value)) != ERROR_OK)
441 command_print(cmd_ctx, "couldn't access reg %i", address);
444 command_print(cmd_ctx, "%i: %8.8x", address, value);
451 int arm966e_register_commands(struct command_context_s *cmd_ctx)
454 command_t *arm966e_cmd;
456 retval = arm7_9_register_commands(cmd_ctx);
457 arm966e_cmd = register_command(cmd_ctx, NULL, "arm966e", NULL, COMMAND_ANY, "arm966e specific commands");
458 register_command(cmd_ctx, arm966e_cmd, "cp15", arm966e_handle_cp15_command, COMMAND_EXEC, "display/modify cp15 register <num> [value]");