X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=blobdiff_plain;f=src%2Ftarget%2Fferoceon.c;h=c87320ae8cf1fce3c03eae2d24e8e9c4d08c8796;hp=c6edc429d1db819bebb4b08e83e4303ebe635fc5;hb=dfbb9f3e89ae;hpb=0d7d64b5e9a463f63deb19f00efa14e6e5b1c34e diff --git a/src/target/feroceon.c b/src/target/feroceon.c index c6edc429d1..c87320ae8c 100644 --- a/src/target/feroceon.c +++ b/src/target/feroceon.c @@ -54,7 +54,7 @@ #include #include - +int feroceon_examine(struct command_context_s *cmd_ctx, struct target_s *target); int feroceon_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct target_s *target); int feroceon_bulk_write_memory(target_t *target, u32 address, u32 count, u8 *buffer); int feroceon_init_target(struct command_context_s *cmd_ctx, struct target_s *target); @@ -83,6 +83,7 @@ target_type_t feroceon_target = .write_memory = arm926ejs_write_memory, .bulk_write_memory = feroceon_bulk_write_memory, .checksum_memory = arm7_9_checksum_memory, + .blank_check_memory = arm7_9_blank_check_memory, .run_algorithm = armv4_5_run_algorithm, @@ -94,11 +95,65 @@ target_type_t feroceon_target = .register_commands = arm926ejs_register_commands, .target_command = feroceon_target_command, .init_target = feroceon_init_target, - .examine = arm9tdmi_examine, + .examine = feroceon_examine, .quit = feroceon_quit }; +int feroceon_dummy_clock_out(arm_jtag_t *jtag_info, u32 instr) +{ + scan_field_t fields[3]; + u8 out_buf[4]; + u8 instr_buf[4]; + u8 sysspeed_buf = 0x0; + + /* prepare buffer */ + buf_set_u32(out_buf, 0, 32, 0); + + buf_set_u32(instr_buf, 0, 32, flip_u32(instr, 32)); + + jtag_add_end_state(TAP_PD); + arm_jtag_scann(jtag_info, 0x1); + + arm_jtag_set_instr(jtag_info, jtag_info->intest_instr, NULL); + + fields[0].device = jtag_info->chain_pos; + fields[0].num_bits = 32; + fields[0].out_value = out_buf; + fields[0].out_mask = NULL; + fields[0].in_value = NULL; + fields[0].in_handler = NULL; + fields[0].in_handler_priv = NULL; + fields[0].in_check_value = NULL; + fields[0].in_check_mask = NULL; + + fields[1].device = jtag_info->chain_pos; + fields[1].num_bits = 3; + fields[1].out_value = &sysspeed_buf; + fields[1].out_mask = NULL; + fields[1].in_value = NULL; + fields[1].in_check_value = NULL; + fields[1].in_check_mask = NULL; + fields[1].in_handler = NULL; + fields[1].in_handler_priv = NULL; + + fields[2].device = jtag_info->chain_pos; + fields[2].num_bits = 32; + fields[2].out_value = instr_buf; + fields[2].out_mask = NULL; + fields[2].in_value = NULL; + fields[2].in_check_value = NULL; + fields[2].in_check_mask = NULL; + fields[2].in_handler = NULL; + fields[2].in_handler_priv = NULL; + + jtag_add_dr_scan(3, fields, -1); + + /* no jtag_add_runtest(0, -1) here */ + + return ERROR_OK; +} + void feroceon_change_to_arm(target_t *target, u32 *r0, u32 *pc) { armv4_5_common_t *armv4_5 = target->arch_info; @@ -110,9 +165,10 @@ void feroceon_change_to_arm(target_t *target, u32 *r0, u32 *pc) * to allow common handling of ARM and THUMB debugging */ - arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0); - arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0); - arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0); + feroceon_dummy_clock_out(jtag_info, ARMV4_5_T_NOP); + feroceon_dummy_clock_out(jtag_info, ARMV4_5_T_NOP); + feroceon_dummy_clock_out(jtag_info, ARMV4_5_T_NOP); + arm9tdmi_clock_out(jtag_info, ARMV4_5_T_STR(0, 0), 0, NULL, 0); arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0); arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0); @@ -138,10 +194,10 @@ void feroceon_change_to_arm(target_t *target, u32 *r0, u32 *pc) /* * fix program counter: - * MOV R0, PC was the 10th instruction (+18) + * MOV R0, PC was the 7th instruction (+12) * reading PC in Thumb state gives address of instruction + 4 */ - *pc -= 22; + *pc -= (12 + 4); } void feroceon_read_core_regs(target_t *target, u32 mask, u32* core_regs[16]) @@ -313,9 +369,7 @@ void feroceon_branch_resume(target_t *target) arm9tdmi_clock_out(jtag_info, ARMV4_5_B(0xfffff9, 0), 0, NULL, 0); arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 1); - /* need BYPASS before RESTART */ - jtag_add_end_state(TAP_RTI); - arm_jtag_set_instr(jtag_info, 0xf, NULL); + arm7_9->need_bypass_before_restart = 1; } void feroceon_branch_resume_thumb(target_t *target) @@ -328,28 +382,21 @@ void feroceon_branch_resume_thumb(target_t *target) u32 r0 = buf_get_u32(armv4_5->core_cache->reg_list[0].value, 0, 32); u32 pc = buf_get_u32(armv4_5->core_cache->reg_list[15].value, 0, 32); - arm9tdmi_clock_out(jtag_info, ARMV4_5_LDMIA(0, 0x8000, 0, 0), 0, NULL, 0); arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0); arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0); - arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, pc & ~3, NULL, 0); - arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0); arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0); arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0); - arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0); - arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0); - arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0); - arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0); - - arm9tdmi_clock_out(jtag_info, 0xE28F0001, 0, NULL, 0); /* add r0,r15,#1 */ + arm9tdmi_clock_out(jtag_info, 0xE28F0001, 0, NULL, 0); // add r0,pc,#1 arm9tdmi_clock_out(jtag_info, ARMV4_5_BX(0), 0, NULL, 0); arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0); arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0); - - arm9tdmi_clock_out(jtag_info, ARMV4_5_T_LDMIA(0, 1), 0, NULL, 0); + + arm9tdmi_clock_out(jtag_info, ARMV4_5_T_LDMIA(0, 0x1), 0, NULL, 0); arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0); arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0); - arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, r0, NULL, 0); + + arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, pc, NULL, 0); arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0); arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0); @@ -357,9 +404,7 @@ void feroceon_branch_resume_thumb(target_t *target) arm9tdmi_clock_out(jtag_info, ARMV4_5_T_B(0x7e9 + pc), 0, NULL, 0); arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 1); - /* need BYPASS before RESTART */ - jtag_add_end_state(TAP_RTI); - arm_jtag_set_instr(jtag_info, 0xf, NULL); + arm7_9->need_bypass_before_restart = 1; } int feroceon_read_cp15(target_t *target, u32 op1, u32 op2, u32 CRn, u32 CRm, u32 *value) @@ -403,6 +448,16 @@ int feroceon_write_cp15(target_t *target, u32 op1, u32 op2, u32 CRn, u32 CRm, u3 return arm7_9_execute_sys_speed(target); } +void feroceon_set_dbgrq(target_t *target) +{ + armv4_5_common_t *armv4_5 = target->arch_info; + arm7_9_common_t *arm7_9 = armv4_5->arch_info; + reg_t *dbg_ctrl = &arm7_9->eice_cache->reg_list[EICE_DBG_CTRL]; + + buf_set_u32(dbg_ctrl->value, 0, 8, 2); + embeddedice_store_reg(dbg_ctrl); +} + void feroceon_enable_single_step(target_t *target) { armv4_5_common_t *armv4_5 = target->arch_info; @@ -547,9 +602,9 @@ int feroceon_bulk_write_memory(target_t *target, u32 address, u32 count, u8 *buf buffer += 4; } - target->type->halt(target); + target_halt(target); while (target->state != TARGET_HALTED) - target->type->poll(target); + target_poll(target); /* restore target state */ for (i = 0; i <= 5; i++) @@ -568,32 +623,7 @@ int feroceon_bulk_write_memory(target_t *target, u32 address, u32 count, u8 *buf int feroceon_init_target(struct command_context_s *cmd_ctx, struct target_s *target) { - armv4_5_common_t *armv4_5; - arm7_9_common_t *arm7_9; - arm9tdmi_init_target(cmd_ctx, target); - - armv4_5 = target->arch_info; - arm7_9 = armv4_5->arch_info; - - /* the COMMS_CTRL bits are all contiguous */ - if (buf_get_u32(arm7_9->eice_cache->reg_list[EICE_COMMS_CTRL].value, 2, 4) != 6) - LOG_ERROR("unexpected Feroceon EICE version signature"); - - arm7_9->eice_cache->reg_list[EICE_DBG_CTRL].size = 6; - arm7_9->eice_cache->reg_list[EICE_DBG_STAT].size = 5; - arm7_9->has_monitor_mode = 1; - - /* vector catch reg is not initialized on reset */ - embeddedice_set_reg(&arm7_9->eice_cache->reg_list[EICE_VEC_CATCH], 0); - - /* clear monitor mode, enable comparators */ - embeddedice_read_reg(&arm7_9->eice_cache->reg_list[EICE_DBG_CTRL]); - jtag_execute_queue(); - buf_set_u32(arm7_9->eice_cache->reg_list[EICE_DBG_CTRL].value, 4, 1, 0); - buf_set_u32(arm7_9->eice_cache->reg_list[EICE_DBG_CTRL].value, 5, 1, 0); - embeddedice_store_reg(&arm7_9->eice_cache->reg_list[EICE_DBG_CTRL]); - return ERROR_OK; } @@ -651,8 +681,10 @@ int feroceon_target_command(struct command_context_s *cmd_ctx, char *cmd, char * arm926ejs->read_cp15 = feroceon_read_cp15; arm926ejs->write_cp15 = feroceon_write_cp15; - /* asserting DBGRQ won't win over the undef exception */ - arm7_9->use_dbgrq = 0; + /* Note: asserting DBGRQ might not win over the undef exception. + If that happens then just use "arm7_9 dbgrq disable". */ + arm7_9->use_dbgrq = 1; + arm7_9->set_special_dbgrq = feroceon_set_dbgrq; /* only one working comparator */ arm7_9->wp_available = 1; @@ -660,3 +692,38 @@ int feroceon_target_command(struct command_context_s *cmd_ctx, char *cmd, char * return ERROR_OK; } + + +int feroceon_examine(struct command_context_s *cmd_ctx, struct target_s *target) +{ + armv4_5_common_t *armv4_5; + arm7_9_common_t *arm7_9; + int retval; + + retval = arm9tdmi_examine(cmd_ctx, target); + if (retval!=ERROR_OK) + return retval; + + armv4_5 = target->arch_info; + arm7_9 = armv4_5->arch_info; + + /* the COMMS_CTRL bits are all contiguous */ + if (buf_get_u32(arm7_9->eice_cache->reg_list[EICE_COMMS_CTRL].value, 2, 4) != 6) + LOG_ERROR("unexpected Feroceon EICE version signature"); + + arm7_9->eice_cache->reg_list[EICE_DBG_CTRL].size = 6; + arm7_9->eice_cache->reg_list[EICE_DBG_STAT].size = 5; + arm7_9->has_monitor_mode = 1; + + /* vector catch reg is not initialized on reset */ + embeddedice_set_reg(&arm7_9->eice_cache->reg_list[EICE_VEC_CATCH], 0); + + /* clear monitor mode, enable comparators */ + embeddedice_read_reg(&arm7_9->eice_cache->reg_list[EICE_DBG_CTRL]); + jtag_execute_queue(); + buf_set_u32(arm7_9->eice_cache->reg_list[EICE_DBG_CTRL].value, 4, 1, 0); + buf_set_u32(arm7_9->eice_cache->reg_list[EICE_DBG_CTRL].value, 5, 1, 0); + embeddedice_store_reg(&arm7_9->eice_cache->reg_list[EICE_DBG_CTRL]); + + return ERROR_OK; +}