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- /***************************************************************************
- * Copyright (C) 2005 by Dominic Rath *
- * Dominic.Rath@gmx.de *
- * *
- * Copyright (C) 2008 by Spencer Oliver *
- * spen@spen-soft.co.uk *
- * *
- * This program is free software; you can redistribute it and/or modify *
- * it under the terms of the GNU General Public License as published by *
- * the Free Software Foundation; either version 2 of the License, or *
- * (at your option) any later version. *
- * *
- * This program is distributed in the hope that it will be useful, *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
- * GNU General Public License for more details. *
- * *
- * You should have received a copy of the GNU General Public License *
- * along with this program; if not, write to the *
- * Free Software Foundation, Inc., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
- ***************************************************************************/
- #ifdef HAVE_CONFIG_H
- #include "config.h"
- #endif
-
- #include "arm966e.h"
- #include "target_type.h"
-
-
- #if 0
- #define _DEBUG_INSTRUCTION_EXECUTION_
- #endif
-
- int arm966e_init_arch_info(target_t *target, arm966e_common_t *arm966e, struct jtag_tap *tap)
- {
- arm9tdmi_common_t *arm9tdmi = &arm966e->arm9tdmi_common;
- arm7_9_common_t *arm7_9 = &arm9tdmi->arm7_9_common;
-
- arm9tdmi_init_arch_info(target, arm9tdmi, tap);
-
- arm966e->common_magic = ARM966E_COMMON_MAGIC;
-
- /* The ARM966E-S implements the ARMv5TE architecture which
- * has the BKPT instruction, so we don't have to use a watchpoint comparator
- */
- arm7_9->arm_bkpt = ARMV5_BKPT(0x0);
- arm7_9->thumb_bkpt = ARMV5_T_BKPT(0x0) & 0xffff;
-
- return ERROR_OK;
- }
-
- static int arm966e_target_create(struct target_s *target, Jim_Interp *interp)
- {
- arm966e_common_t *arm966e = calloc(1,sizeof(arm966e_common_t));
-
- return arm966e_init_arch_info(target, arm966e, target->tap);
- }
-
- static int arm966e_verify_pointer(struct command_context_s *cmd_ctx,
- struct arm966e_common_s *arm966e)
- {
- if (arm966e->common_magic != ARM966E_COMMON_MAGIC) {
- command_print(cmd_ctx, "target is not an ARM966");
- return ERROR_TARGET_INVALID;
- }
- return ERROR_OK;
- }
-
- static int arm966e_read_cp15(target_t *target, int reg_addr, uint32_t *value)
- {
- int retval = ERROR_OK;
- struct arm7_9_common_s *arm7_9 = target_to_arm7_9(target);
- arm_jtag_t *jtag_info = &arm7_9->jtag_info;
- struct scan_field fields[3];
- uint8_t reg_addr_buf = reg_addr & 0x3f;
- uint8_t nr_w_buf = 0;
-
- jtag_set_end_state(TAP_IDLE);
- if ((retval = arm_jtag_scann(jtag_info, 0xf)) != ERROR_OK)
- {
- return retval;
- }
- arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL);
-
- fields[0].tap = jtag_info->tap;
- fields[0].num_bits = 32;
- fields[0].out_value = NULL;
- fields[0].in_value = NULL;
-
- fields[1].tap = jtag_info->tap;
- fields[1].num_bits = 6;
- fields[1].out_value = ®_addr_buf;
- fields[1].in_value = NULL;
-
- fields[2].tap = jtag_info->tap;
- fields[2].num_bits = 1;
- fields[2].out_value = &nr_w_buf;
- fields[2].in_value = NULL;
-
- jtag_add_dr_scan(3, fields, jtag_get_end_state());
-
- fields[1].in_value = (uint8_t *)value;
-
- jtag_add_dr_scan(3, fields, jtag_get_end_state());
-
- jtag_add_callback(arm_le_to_h_u32, (jtag_callback_data_t)value);
-
-
- #ifdef _DEBUG_INSTRUCTION_EXECUTION_
- if ((retval = jtag_execute_queue()) != ERROR_OK)
- {
- return retval;
- }
- LOG_DEBUG("addr: 0x%x value: %8.8x", reg_addr, *value);
- #endif
-
- return ERROR_OK;
- }
-
- // EXPORTED to str9x (flash)
- int arm966e_write_cp15(target_t *target, int reg_addr, uint32_t value)
- {
- int retval = ERROR_OK;
- struct arm7_9_common_s *arm7_9 = target_to_arm7_9(target);
- arm_jtag_t *jtag_info = &arm7_9->jtag_info;
- struct scan_field fields[3];
- uint8_t reg_addr_buf = reg_addr & 0x3f;
- uint8_t nr_w_buf = 1;
- uint8_t value_buf[4];
-
- buf_set_u32(value_buf, 0, 32, value);
-
- jtag_set_end_state(TAP_IDLE);
- if ((retval = arm_jtag_scann(jtag_info, 0xf)) != ERROR_OK)
- {
- return retval;
- }
- arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL);
-
- fields[0].tap = jtag_info->tap;
- fields[0].num_bits = 32;
- fields[0].out_value = value_buf;
- fields[0].in_value = NULL;
-
- fields[1].tap = jtag_info->tap;
- fields[1].num_bits = 6;
- fields[1].out_value = ®_addr_buf;
- fields[1].in_value = NULL;
-
- fields[2].tap = jtag_info->tap;
- fields[2].num_bits = 1;
- fields[2].out_value = &nr_w_buf;
- fields[2].in_value = NULL;
-
- jtag_add_dr_scan(3, fields, jtag_get_end_state());
-
- #ifdef _DEBUG_INSTRUCTION_EXECUTION_
- LOG_DEBUG("addr: 0x%x value: %8.8x", reg_addr, value);
- #endif
-
- return ERROR_OK;
- }
-
- COMMAND_HANDLER(arm966e_handle_cp15_command)
- {
- int retval;
- target_t *target = get_current_target(cmd_ctx);
- struct arm966e_common_s *arm966e = target_to_arm966(target);
-
- retval = arm966e_verify_pointer(cmd_ctx, arm966e);
- if (retval != ERROR_OK)
- return retval;
-
- if (target->state != TARGET_HALTED)
- {
- command_print(cmd_ctx, "target must be stopped for \"%s\" command", CMD_NAME);
- return ERROR_OK;
- }
-
- /* one or more argument, access a single register (write if second argument is given */
- if (argc >= 1)
- {
- uint32_t address;
- COMMAND_PARSE_NUMBER(u32, args[0], address);
-
- if (argc == 1)
- {
- uint32_t value;
- if ((retval = arm966e_read_cp15(target, address, &value)) != ERROR_OK)
- {
- command_print(cmd_ctx, "couldn't access reg %i", address);
- return ERROR_OK;
- }
- if ((retval = jtag_execute_queue()) != ERROR_OK)
- {
- return retval;
- }
-
- command_print(cmd_ctx, "%i: %8.8" PRIx32 "", address, value);
- }
- else if (argc == 2)
- {
- uint32_t value;
- COMMAND_PARSE_NUMBER(u32, args[1], value);
- if ((retval = arm966e_write_cp15(target, address, value)) != ERROR_OK)
- {
- command_print(cmd_ctx, "couldn't access reg %i", address);
- return ERROR_OK;
- }
- command_print(cmd_ctx, "%i: %8.8" PRIx32 "", address, value);
- }
- }
-
- return ERROR_OK;
- }
-
- /** Registers commands used to access coprocessor resources. */
- int arm966e_register_commands(struct command_context_s *cmd_ctx)
- {
- int retval;
- command_t *arm966e_cmd;
-
- retval = arm9tdmi_register_commands(cmd_ctx);
- arm966e_cmd = register_command(cmd_ctx, NULL, "arm966e",
- NULL, COMMAND_ANY,
- "arm966e specific commands");
- register_command(cmd_ctx, arm966e_cmd, "cp15",
- arm966e_handle_cp15_command, COMMAND_EXEC,
- "display/modify cp15 register <num> [value]");
-
- return retval;
- }
-
- /** Holds methods for ARM966 targets. */
- target_type_t arm966e_target =
- {
- .name = "arm966e",
-
- .poll = arm7_9_poll,
- .arch_state = armv4_5_arch_state,
-
- .target_request_data = arm7_9_target_request_data,
-
- .halt = arm7_9_halt,
- .resume = arm7_9_resume,
- .step = arm7_9_step,
-
- .assert_reset = arm7_9_assert_reset,
- .deassert_reset = arm7_9_deassert_reset,
- .soft_reset_halt = arm7_9_soft_reset_halt,
-
- .get_gdb_reg_list = armv4_5_get_gdb_reg_list,
-
- .read_memory = arm7_9_read_memory,
- .write_memory = arm7_9_write_memory,
- .bulk_write_memory = arm7_9_bulk_write_memory,
- .checksum_memory = arm7_9_checksum_memory,
- .blank_check_memory = arm7_9_blank_check_memory,
-
- .run_algorithm = armv4_5_run_algorithm,
-
- .add_breakpoint = arm7_9_add_breakpoint,
- .remove_breakpoint = arm7_9_remove_breakpoint,
- .add_watchpoint = arm7_9_add_watchpoint,
- .remove_watchpoint = arm7_9_remove_watchpoint,
-
- .register_commands = arm966e_register_commands,
- .target_create = arm966e_target_create,
- .init_target = arm9tdmi_init_target,
- .examine = arm9tdmi_examine,
- };
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