diff options
Diffstat (limited to 'src/target')
| -rw-r--r-- | src/target/Makefile.am | 5 | ||||
| -rw-r--r-- | src/target/arm11.c | 395 | ||||
| -rw-r--r-- | src/target/arm11.h | 43 | ||||
| -rw-r--r-- | src/target/arm11_dbgtap.c | 216 | ||||
| -rw-r--r-- | src/target/target.c | 2 |
5 files changed, 565 insertions, 96 deletions
diff --git a/src/target/Makefile.am b/src/target/Makefile.am index 832ff739..acda7223 100644 --- a/src/target/Makefile.am +++ b/src/target/Makefile.am @@ -5,6 +5,7 @@ else OOCD_TRACE_FILES = endif +CFLAGS += -Wall INCLUDES = -I$(top_srcdir)/src/gdb -I$(top_srcdir)/src/helper -I$(top_srcdir)/src/jtag -I$(top_srcdir)/src/xsvf $(all_includes) METASOURCES = AUTO AM_CPPFLAGS = -DPKGLIBDIR=\"$(pkglibdir)\" @CPPFLAGS@ @@ -12,11 +13,11 @@ noinst_LIBRARIES = libtarget.a libtarget_a_SOURCES = target.c register.c breakpoints.c armv4_5.c embeddedice.c etm.c arm7tdmi.c arm9tdmi.c \ arm_jtag.c arm7_9_common.c algorithm.c arm920t.c arm720t.c armv4_5_mmu.c armv4_5_cache.c arm_disassembler.c \ arm966e.c arm926ejs.c feroceon.c etb.c xscale.c arm_simulator.c image.c armv7m.c cortex_m3.c cortex_swjdp.c \ - etm_dummy.c $(OOCD_TRACE_FILES) target_request.c trace.c + etm_dummy.c $(OOCD_TRACE_FILES) target_request.c trace.c arm11.c arm11_dbgtap.c noinst_HEADERS = target.h trace.h register.h armv4_5.h embeddedice.h etm.h arm7tdmi.h arm9tdmi.h \ arm_jtag.h arm7_9_common.h arm920t.h arm720t.h armv4_5_mmu.h armv4_5_cache.h breakpoints.h algorithm.h \ arm_disassembler.h arm966e.h arm926ejs.h etb.h xscale.h arm_simulator.h image.h armv7m.h cortex_m3.h cortex_swjdp.h \ - etm_dummy.h oocd_trace.h target_request.h trace.h + etm_dummy.h oocd_trace.h target_request.h trace.h arm11.h nobase_dist_pkglib_DATA = xscale/debug_handler.bin event/at91eb40a_reset.cfg target/at91eb40a.cfg diff --git a/src/target/arm11.c b/src/target/arm11.c index d02518a2..905a5d77 100644 --- a/src/target/arm11.c +++ b/src/target/arm11.c @@ -48,6 +48,11 @@ static void arm11_on_enter_debug_state(arm11_common_t * arm11); +bool arm11_config_memwrite_burst = true; +bool arm11_config_memwrite_error_fatal = true; +u32 arm11_vcr = 0; + + #define ARM11_HANDLER(x) \ .x = arm11_##x @@ -338,7 +343,7 @@ void arm11_check_init(arm11_common_t * arm11, u32 * dscr) arm11->target->debug_reason = DBG_REASON_NOTHALTED; } - arm11_sc7_clear_bw(arm11); + arm11_sc7_clear_vbw(arm11); } } @@ -382,7 +387,7 @@ static void arm11_on_enter_debug_state(arm11_common_t * arm11) arm11_setup_field(arm11, 1, NULL, NULL, chain5_fields + 1); arm11_setup_field(arm11, 1, NULL, NULL, chain5_fields + 2); - jtag_add_dr_scan_vc(asizeof(chain5_fields), chain5_fields, TAP_PD); + arm11_add_dr_scan_vc(asizeof(chain5_fields), chain5_fields, TAP_PD); } else { @@ -501,7 +506,11 @@ static void arm11_on_enter_debug_state(arm11_common_t * arm11) arm11_run_instr_data_finish(arm11); + arm11_dump_reg_changes(arm11); +} +void arm11_dump_reg_changes(arm11_common_t * arm11) +{ {size_t i; for(i = 0; i < ARM11_REGCACHE_COUNT; i++) { @@ -556,7 +565,7 @@ void arm11_leave_debug_state(arm11_common_t * arm11) /* spec says clear wDTR and rDTR; we assume they are clear as - otherwide out programming would be sloppy */ + otherwise our programming would be sloppy */ { u32 DSCR = arm11_read_DSCR(arm11); @@ -619,10 +628,14 @@ void arm11_leave_debug_state(arm11_common_t * arm11) arm11_setup_field(arm11, 1, &Ready, NULL, chain5_fields + 1); arm11_setup_field(arm11, 1, &Valid, NULL, chain5_fields + 2); - jtag_add_dr_scan_vc(asizeof(chain5_fields), chain5_fields, TAP_PD); + arm11_add_dr_scan_vc(asizeof(chain5_fields), chain5_fields, TAP_PD); } + arm11_record_register_history(arm11); +} +void arm11_record_register_history(arm11_common_t * arm11) +{ {size_t i; for(i = 0; i < ARM11_REGCACHE_COUNT; i++) { @@ -653,21 +666,22 @@ int arm11_poll(struct target_s *target) if (dscr & ARM11_DSCR_CORE_HALTED) { -// DEBUG("CH %d", target->state); - if (target->state != TARGET_HALTED) { + enum target_state old_state = target->state; + DEBUG("enter TARGET_HALTED"); target->state = TARGET_HALTED; target->debug_reason = arm11_get_DSCR_debug_reason(dscr); arm11_on_enter_debug_state(arm11); + + target_call_event_callbacks(target, + old_state == TARGET_DEBUG_RUNNING ? TARGET_EVENT_DEBUG_HALTED : TARGET_EVENT_HALTED); } } else { -// DEBUG("CR %d", target->state); - - if (target->state != TARGET_RUNNING) + if (target->state != TARGET_RUNNING && target->state != TARGET_DEBUG_RUNNING) { DEBUG("enter TARGET_RUNNING"); target->state = TARGET_RUNNING; @@ -733,9 +747,14 @@ int arm11_halt(struct target_s *target) arm11_on_enter_debug_state(arm11); + enum target_state old_state = target->state; + target->state = TARGET_HALTED; target->debug_reason = arm11_get_DSCR_debug_reason(dscr); - + + target_call_event_callbacks(target, + old_state == TARGET_DEBUG_RUNNING ? TARGET_EVENT_DEBUG_HALTED : TARGET_EVENT_HALTED); + return ERROR_OK; } @@ -744,6 +763,9 @@ int arm11_resume(struct target_s *target, int current, u32 address, int handle_b { FNC_INFO; +// DEBUG("current %d address %08x handle_breakpoints %d debug_execution %d", +// current, address, handle_breakpoints, debug_execution); + arm11_common_t * arm11 = target->arch_info; DEBUG("target->state: %s", target_state_strings[target->state]); @@ -757,8 +779,53 @@ int arm11_resume(struct target_s *target, int current, u32 address, int handle_b if (!current) R(PC) = address; - target->state = TARGET_RUNNING; - target->debug_reason = DBG_REASON_NOTHALTED; + INFO("RESUME PC %08x", R(PC)); + + /* clear breakpoints/watchpoints and VCR*/ + arm11_sc7_clear_vbw(arm11); + + /* Set up breakpoints */ + if (!debug_execution) + { + /* check if one matches PC and step over it if necessary */ + + breakpoint_t * bp; + + for (bp = target->breakpoints; bp; bp = bp->next) + { + if (bp->address == R(PC)) + { + DEBUG("must step over %08x", bp->address); + arm11_step(target, 1, 0, 0); + break; + } + } + + /* set all breakpoints */ + + size_t brp_num = 0; + + for (bp = target->breakpoints; bp; bp = bp->next) + { + arm11_sc7_action_t brp[2]; + + brp[0].write = 1; + brp[0].address = ARM11_SC7_BVR0 + brp_num; + brp[0].value = bp->address; + brp[1].write = 1; + brp[1].address = ARM11_SC7_BCR0 + brp_num; + brp[1].value = 0x1 | (3 << 1) | (0x0F << 5) | (0 << 14) | (0 << 16) | (0 << 20) | (0 << 21); + + arm11_sc7_run(arm11, brp, asizeof(brp)); + + DEBUG("Add BP %d at %08x", brp_num, bp->address); + + brp_num++; + } + + arm11_sc7_set_vcr(arm11, arm11_vcr); + } + arm11_leave_debug_state(arm11); @@ -776,7 +843,18 @@ int arm11_resume(struct target_s *target, int current, u32 address, int handle_b break; } - DEBUG("RES %d", target->state); + if (!debug_execution) + { + target->state = TARGET_RUNNING; + target->debug_reason = DBG_REASON_NOTHALTED; + target_call_event_callbacks(target, TARGET_EVENT_RESUMED); + } + else + { + target->state = TARGET_DEBUG_RUNNING; + target->debug_reason = DBG_REASON_NOTHALTED; + target_call_event_callbacks(target, TARGET_EVENT_DEBUG_RESUMED); + } return ERROR_OK; } @@ -795,61 +873,87 @@ int arm11_step(struct target_s *target, int current, u32 address, int handle_bre arm11_common_t * arm11 = target->arch_info; - /** \todo TODO: check if break-/watchpoints make any sense at all in combination - * with this. */ + if (!current) + R(PC) = address; + + INFO("STEP PC %08x", R(PC)); - /** \todo TODO: check if disabling IRQs might be a good idea here. Alternatively - the VCR might be something worth looking into. */ + /** \todo TODO: Thumb not supported here */ - /* Set up breakpoint for stepping */ + u32 next_instruction; - arm11_sc7_action_t brp[2]; + arm11_read_memory_word(arm11, R(PC), &next_instruction); - brp[0].write = 1; - brp[0].address = ARM11_SC7_BVR0; - brp[0].value = R(PC); - brp[1].write = 1; - brp[1].address = ARM11_SC7_BCR0; - brp[1].value = 0x1 | (3 << 1) | (0x0F << 5) | (0 << 14) | (0 << 16) | (0 << 20) | (2 << 21); + /** skip over BKPT */ + if ((next_instruction & 0xFFF00070) == 0xe1200070) + { + R(PC) += 4; + arm11->reg_list[ARM11_RC_PC].valid = 1; + arm11->reg_list[ARM11_RC_PC].dirty = 0; + INFO("Skipping BKPT"); + } + /* ignore B to self */ + else if ((next_instruction & 0xFEFFFFFF) == 0xeafffffe) + { + INFO("Not stepping jump to self"); + } + else + { + /** \todo TODO: check if break-/watchpoints make any sense at all in combination + * with this. */ - arm11_sc7_run(arm11, brp, asizeof(brp)); + /** \todo TODO: check if disabling IRQs might be a good idea here. Alternatively + * the VCR might be something worth looking into. */ - /* resume */ - arm11_leave_debug_state(arm11); + /* Set up breakpoint for stepping */ - arm11_add_IR(arm11, ARM11_RESTART, TAP_RTI); + arm11_sc7_action_t brp[2]; - jtag_execute_queue(); + brp[0].write = 1; + brp[0].address = ARM11_SC7_BVR0; + brp[0].value = R(PC); + brp[1].write = 1; + brp[1].address = ARM11_SC7_BCR0; + brp[1].value = 0x1 | (3 << 1) | (0x0F << 5) | (0 << 14) | (0 << 16) | (0 << 20) | (2 << 21); - /** \todo TODO: add a timeout */ + arm11_sc7_run(arm11, brp, asizeof(brp)); - /* wait for halt */ + /* resume */ - while (1) - { - u32 dscr = arm11_read_DSCR(arm11); + arm11_leave_debug_state(arm11); - DEBUG("DSCR %08x", dscr); + arm11_add_IR(arm11, ARM11_RESTART, TAP_RTI); - if ((dscr & (ARM11_DSCR_CORE_RESTARTED | ARM11_DSCR_CORE_HALTED)) == - (ARM11_DSCR_CORE_RESTARTED | ARM11_DSCR_CORE_HALTED)) - break; - } + jtag_execute_queue(); + /** \todo TODO: add a timeout */ - /* clear breakpoint */ + /* wait for halt */ - arm11_sc7_clear_bw(arm11); + while (1) + { + u32 dscr = arm11_read_DSCR(arm11); + DEBUG("DSCR %08x", dscr); - /* save state */ + if ((dscr & (ARM11_DSCR_CORE_RESTARTED | ARM11_DSCR_CORE_HALTED)) == + (ARM11_DSCR_CORE_RESTARTED | ARM11_DSCR_CORE_HALTED)) + break; + } - arm11_on_enter_debug_state(arm11); + /* clear breakpoint */ + arm11_sc7_clear_vbw(arm11); + + /* save state */ + arm11_on_enter_debug_state(arm11); + } // target->state = TARGET_HALTED; target->debug_reason = DBG_REASON_SINGLESTEP; + target_call_event_callbacks(target, TARGET_EVENT_HALTED); + return ERROR_OK; } @@ -1064,13 +1168,47 @@ int arm11_write_memory(struct target_s *target, u32 address, u32 size, u32 count case 4: /** \todo TODO: check if buffer cast to u32* might cause alignment problems */ - /* STC p14,c5,[R0],#4 */ - arm11_run_instr_data_to_core(arm11, 0xeca05e01, (u32 *)buffer, count); + if (!arm11_config_memwrite_burst) + { + /* STC p14,c5,[R0],#4 */ + arm11_run_instr_data_to_core(arm11, 0xeca05e01, (u32 *)buffer, count); + } + else + { + /* STC p14,c5,[R0],#4 */ + arm11_run_instr_data_to_core_noack(arm11, 0xeca05e01, (u32 *)buffer, count); + } + break; } +#if 1 + /* r0 verification */ + { + u32 r0; + + /* MCR p14,0,R0,c0,c5,0 */ + arm11_run_instr_data_from_core(arm11, 0xEE000E15, &r0, 1); + + if (address + size * count != r0) + { + ERROR("Data transfer failed. (%d)", (r0 - address) - size * count); + + if (arm11_config_memwrite_burst) + ERROR("use 'arm11 memwrite burst disable' to disable fast burst mode"); + + if (arm11_config_memwrite_error_fatal) + exit(-1); + } + } +#endif + + arm11_run_instr_data_finish(arm11); + + + return ERROR_OK; } @@ -1097,14 +1235,42 @@ int arm11_checksum_memory(struct target_s *target, u32 address, u32 count, u32* */ int arm11_add_breakpoint(struct target_s *target, breakpoint_t *breakpoint) { - FNC_INFO_NOTIMPLEMENTED; + FNC_INFO; + + arm11_common_t * arm11 = target->arch_info; + +#if 0 + if (breakpoint->type == BKPT_SOFT) + { + INFO("sw breakpoint requested, but software breakpoints not enabled"); + return ERROR_TARGET_RESOURCE_NOT_AVAILABLE; + } +#endif + + if (!arm11->free_brps) + { + INFO("no breakpoint unit available for hardware breakpoint"); + return ERROR_TARGET_RESOURCE_NOT_AVAILABLE; + } + + if (breakpoint->length != 4) + { + INFO("only breakpoints of four bytes length supported"); + return ERROR_TARGET_RESOURCE_NOT_AVAILABLE; + } + + arm11->free_brps--; return ERROR_OK; } int arm11_remove_breakpoint(struct target_s *target, breakpoint_t *breakpoint) { - FNC_INFO_NOTIMPLEMENTED; + FNC_INFO; + + arm11_common_t * arm11 = target->arch_info; + + arm11->free_brps++; return ERROR_OK; } @@ -1132,14 +1298,6 @@ int arm11_run_algorithm(struct target_s *target, int num_mem_params, mem_param_t return ERROR_OK; } - -int arm11_register_commands(struct command_context_s *cmd_ctx) -{ - FNC_INFO; - - return ERROR_OK; -} - int arm11_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct target_s *target) { FNC_INFO; @@ -1189,7 +1347,7 @@ int arm11_init_target(struct command_context_s *cmd_ctx, struct target_s *target arm11_setup_field(arm11, 32, NULL, &arm11->device_id, &idcode_field); - jtag_add_dr_scan_vc(1, &idcode_field, TAP_PD); + arm11_add_dr_scan_vc(1, &idcode_field, TAP_PD); /* check DIDR */ @@ -1202,7 +1360,7 @@ int arm11_init_target(struct command_context_s *cmd_ctx, struct target_s *target arm11_setup_field(arm11, 32, NULL, &arm11->didr, chain0_fields + 0); arm11_setup_field(arm11, 8, NULL, &arm11->implementor, chain0_fields + 1); - jtag_add_dr_scan_vc(asizeof(chain0_fields), chain0_fields, TAP_RTI); + arm11_add_dr_scan_vc(asizeof(chain0_fields), chain0_fields, TAP_RTI); jtag_execute_queue(); @@ -1219,9 +1377,22 @@ int arm11_init_target(struct command_context_s *cmd_ctx, struct target_s *target } } + arm11->debug_version = (arm11->didr >> 16) & 0x0F; + + if (arm11->debug_version != ARM11_DEBUG_V6 && + arm11->debug_version != ARM11_DEBUG_V61) + { + ERROR("Only ARMv6 v6 and v6.1 architectures supported."); + exit(-1); + } + + arm11->brp = ((arm11->didr >> 24) & 0x0F) + 1; arm11->wrp = ((arm11->didr >> 28) & 0x0F) + 1; + /** \todo TODO: reserve one brp slot if we allow breakpoints during step */ + arm11->free_brps = arm11->brp; + arm11->free_wrps = arm11->wrp; DEBUG("IDCODE %08x IMPLEMENTOR %02x DIDR %08x", arm11->device_id, @@ -1260,7 +1431,7 @@ int arm11_get_reg(reg_t *reg) return ERROR_TARGET_NOT_HALTED; } - /** \todo TODO: Check this. We assume that all registers are fetched debug entry. */ + /** \todo TODO: Check this. We assume that all registers are fetched at debug entry. */ #if 0 arm11_common_t *arm11 = target->arch_info; @@ -1344,15 +1515,105 @@ void arm11_build_reg_cache(target_t *target) } } -#if 0 - arm11_run_instr_data_prepare(arm11); - /* MRC p14,0,r0,c0,c5,0 */ - arm11_run_instr_data_to_core(arm11, 0xee100e15, 0xCA00003C); - /* MRC p14,0,r1,c0,c5,0 */ - arm11_run_instr_data_to_core(arm11, 0xee101e15, 0xFFFFFFFF); - arm11_run_instr_data_finish(arm11); -#endif +int arm11_handle_bool(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, bool * var, char * name) +{ + if (argc == 0) + { + INFO("%s is %s.", name, *var ? "enabled" : "disabled"); + return ERROR_OK; + } + + if (argc != 1) + return ERROR_COMMAND_SYNTAX_ERROR; + + switch (args[0][0]) + { + case '0': /* 0 */ + case 'f': /* false */ + case 'F': + case 'd': /* disable */ + case 'D': + *var = false; + break; + + case '1': /* 1 */ + case 't': /* true */ + case 'T': + case 'e': /* enable */ + case 'E': + *var = true; + break; + } + + INFO("%s %s.", *var ? "Enabled" : "Disabled", name); + + return ERROR_OK; +} + + +#define BOOL_WRAPPER(name, print_name) \ +int arm11_handle_bool_##name(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) \ +{ \ + return arm11_handle_bool(cmd_ctx, cmd, args, argc, &arm11_config_##name, print_name); \ +} + +#define RC_TOP(name, descr, more) \ +{ \ + command_t * new_cmd = register_command(cmd_ctx, top_cmd, name, NULL, COMMAND_ANY, descr); \ + command_t * top_cmd = new_cmd; \ + more \ +} +#define RC_FINAL(name, descr, handler) \ + register_command(cmd_ctx, top_cmd, name, handler, COMMAND_ANY, descr); +#define RC_FINAL_BOOL(name, descr, var) \ + register_command(cmd_ctx, top_cmd, name, arm11_handle_bool_##var, COMMAND_ANY, descr); + + +BOOL_WRAPPER(memwrite_burst, "memory write burst mode") +BOOL_WRAPPER(memwrite_error_fatal, "fatal error mode for memory writes") + + +int arm11_handle_vcr(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) +{ + if (argc == 1) + { + arm11_vcr = strtoul(args[0], NULL, 0); + } + else if (argc != 0) + { + return ERROR_COMMAND_SYNTAX_ERROR; + } + + INFO("VCR 0x%08X", arm11_vcr); + return ERROR_OK; +} + + +int arm11_register_commands(struct command_context_s *cmd_ctx) +{ + FNC_INFO; + + command_t * top_cmd = NULL; + + RC_TOP( "arm11", "arm11 specific commands", + + RC_TOP( "memwrite", "Control memory write transfer mode", + + RC_FINAL_BOOL( "burst", "Enable/Disable non-standard but fast burst mode (default: enabled)", + memwrite_burst) + + RC_FINAL_BOOL( "error_fatal", + "Terminate program if transfer error was found (default: enabled)", + memwrite_error_fatal) + ) + + RC_FINAL( "vcr", "Control (Interrupt) Vector Catch Register", + arm11_handle_vcr) + ) + + return ERROR_OK; +} diff --git a/src/target/arm11.h b/src/target/arm11.h index f2263b52..6e3b1d15 100644 --- a/src/target/arm11.h +++ b/src/target/arm11.h @@ -50,7 +50,13 @@ typedef struct arm11_register_history_s u8 valid; }arm11_register_history_t; - +enum arm11_debug_version +{ + ARM11_DEBUG_V6 = 0x01, + ARM11_DEBUG_V61 = 0x02, + ARM11_DEBUG_V7 = 0x03, + ARM11_DEBUG_V7_CP14 = 0x04, +}; typedef struct arm11_common_s { @@ -65,9 +71,11 @@ typedef struct arm11_common_s u32 didr; /**< DIDR readout (debug capabilities) */ u8 implementor; /**< DIDR Implementor readout */ - size_t brp; /**< Number of Breakpoint Register Pairs */ - size_t wrp; /**< Number of Watchpoint Register Pairs */ + size_t brp; /**< Number of Breakpoint Register Pairs from DIDR */ + size_t wrp; /**< Number of Watchpoint Register Pairs from DIDR */ + enum arm11_debug_version + debug_version; /**< ARM debug architecture from DIDR */ /*@}*/ @@ -89,6 +97,9 @@ typedef struct arm11_common_s reg_history[ARM11_REGCACHE_COUNT]; /**< register state before last resume */ + size_t free_brps; /**< keep track of breakpoints allocated by arm11_add_breakpoint() */ + size_t free_wrps; /**< keep track of breakpoints allocated by arm11_add_watchpoint() */ + } arm11_common_t; @@ -212,6 +223,9 @@ int arm11_quit(void); /* helpers */ void arm11_build_reg_cache(target_t *target); +void arm11_record_register_history(arm11_common_t * arm11); +void arm11_dump_reg_changes(arm11_common_t * arm11); + /* internals */ @@ -229,21 +243,36 @@ void arm11_run_instr_data_finish (arm11_common_t * arm11); void arm11_run_instr_no_data (arm11_common_t * arm11, u32 * opcode, size_t count); void arm11_run_instr_no_data1 (arm11_common_t * arm11, u32 opcode); void arm11_run_instr_data_to_core (arm11_common_t * arm11, u32 opcode, u32 * data, size_t count); +void arm11_run_instr_data_to_core_noack (arm11_common_t * arm11, u32 opcode, u32 * data, size_t count); void arm11_run_instr_data_to_core1 (arm11_common_t * arm11, u32 opcode, u32 data); void arm11_run_instr_data_from_core (arm11_common_t * arm11, u32 opcode, u32 * data, size_t count); void arm11_run_instr_data_from_core_via_r0 (arm11_common_t * arm11, u32 opcode, u32 * data); void arm11_run_instr_data_to_core_via_r0 (arm11_common_t * arm11, u32 opcode, u32 data); +int arm11_add_dr_scan_vc(int num_fields, scan_field_t *fields, enum tap_state state); +int arm11_add_ir_scan_vc(int num_fields, scan_field_t *fields, enum tap_state state); + +/** Used to make a list of read/write commands for scan chain 7 + * + * Use with arm11_sc7_run() + */ typedef struct arm11_sc7_action_s { - bool write; - u8 address; - u32 value; + bool write; /**< Access mode: true for write, false for read. */ + u8 address; /**< Register address mode. Use enum #arm11_sc7 */ + u32 value; /**< If write then set this to value to be written. + In read mode this receives the read value when the + function returns. */ } arm11_sc7_action_t; void arm11_sc7_run(arm11_common_t * arm11, arm11_sc7_action_t * actions, size_t count); -void arm11_sc7_clear_bw(arm11_common_t * arm11); + +/* Mid-level helper functions */ +void arm11_sc7_clear_vbw(arm11_common_t * arm11); +void arm11_sc7_set_vcr(arm11_common_t * arm11, u32 value); + +void arm11_read_memory_word(arm11_common_t * arm11, u32 address, u32 * result); diff --git a/src/target/arm11_dbgtap.c b/src/target/arm11_dbgtap.c index d77c9535..eed48bb3 100644 --- a/src/target/arm11_dbgtap.c +++ b/src/target/arm11_dbgtap.c @@ -38,6 +38,34 @@ do {} while(0) #endif +enum tap_state arm11_move_pi_to_si_via_ci[] = +{ + TAP_E2I, TAP_UI, TAP_SDS, TAP_SIS, TAP_CI, TAP_SI +}; + + +int arm11_add_ir_scan_vc(int num_fields, scan_field_t *fields, enum tap_state state) +{ + if (cmd_queue_cur_state == TAP_PI) + jtag_add_pathmove(asizeof(arm11_move_pi_to_si_via_ci), arm11_move_pi_to_si_via_ci); + + return jtag_add_ir_scan(num_fields, fields, state); +} + +enum tap_state arm11_move_pd_to_sd_via_cd[] = +{ + TAP_E2D, TAP_UD, TAP_SDS, TAP_CD, TAP_SD +}; + +int arm11_add_dr_scan_vc(int num_fields, scan_field_t *fields, enum tap_state state) +{ + if (cmd_queue_cur_state == TAP_PD) + jtag_add_pathmove(asizeof(arm11_move_pd_to_sd_via_cd), arm11_move_pd_to_sd_via_cd); + + return jtag_add_dr_scan(num_fields, fields, state); +} + + /** Code de-clutter: Construct scan_field_t to write out a value * * \param arm11 Target state variable. @@ -87,7 +115,7 @@ void arm11_add_IR(arm11_common_t * arm11, u8 instr, enum tap_state state) arm11_setup_field(arm11, 5, &instr, NULL, &field); - jtag_add_ir_scan_vc(1, &field, state == -1 ? TAP_PI : state); + arm11_add_ir_scan_vc(1, &field, state == -1 ? TAP_PI : state); } /** Verify shifted out data from Scan Chain Register (SCREG) @@ -146,7 +174,7 @@ void arm11_add_debug_SCAN_N(arm11_common_t * arm11, u8 chain, enum tap_state sta field.in_handler = arm11_in_handler_SCAN_N; - jtag_add_dr_scan_vc(1, &field, state == -1 ? TAP_PD : state); + arm11_add_dr_scan_vc(1, &field, state == -1 ? TAP_PD : state); } /** Write an instruction into the ITR register @@ -175,7 +203,7 @@ void arm11_add_debug_INST(arm11_common_t * arm11, u32 inst, u8 * flag, enum tap_ arm11_setup_field(arm11, 32, &inst, NULL, itr + 0); arm11_setup_field(arm11, 1, NULL, flag, itr + 1); - jtag_add_dr_scan_vc(asizeof(itr), itr, state == -1 ? TAP_RTI : state); + arm11_add_dr_scan_vc(asizeof(itr), itr, state == -1 ? TAP_RTI : state); } /** Read the Debug Status and Control Register (DSCR) @@ -198,7 +226,7 @@ u32 arm11_read_DSCR(arm11_common_t * arm11) arm11_setup_field(arm11, 32, NULL, &dscr, &chain1_field); - jtag_add_dr_scan_vc(1, &chain1_field, TAP_PD); + arm11_add_dr_scan_vc(1, &chain1_field, TAP_PD); jtag_execute_queue(); @@ -229,7 +257,7 @@ void arm11_write_DSCR(arm11_common_t * arm11, u32 dscr) arm11_setup_field(arm11, 32, &dscr, NULL, &chain1_field); - jtag_add_dr_scan_vc(1, &chain1_field, TAP_PD); + arm11_add_dr_scan_vc(1, &chain1_field, TAP_PD); jtag_execute_queue(); @@ -385,7 +413,7 @@ void arm11_run_instr_data_to_core(arm11_common_t * arm11, u32 opcode, u32 * data { Data = *data; - jtag_add_dr_scan_vc(asizeof(chain5_fields), chain5_fields, TAP_RTI); + arm11_add_dr_scan_vc(asizeof(chain5_fields), chain5_fields, TAP_RTI); jtag_execute_queue(); JTAG_DEBUG("DTR Ready %d nRetry %d", Ready, nRetry); @@ -401,16 +429,106 @@ void arm11_run_instr_data_to_core(arm11_common_t * arm11, u32 opcode, u32 * data { Data = 0; - jtag_add_dr_scan_vc(asizeof(chain5_fields), chain5_fields, TAP_PD); + arm11_add_dr_scan_vc(asizeof(chain5_fields), chain5_fields, TAP_PD); jtag_execute_queue(); JTAG_DEBUG("DTR Data %08x Ready %d nRetry %d", Data, Ready, nRetry); } while (!Ready); +} + +/** JTAG path for arm11_run_instr_data_to_core_noack + * + * The repeated TAP_RTI's do not cause a repeated execution + * if passed without leaving the state. + * + * Since this is more than 7 bits (adjustable via adding more + * TAP_RTI's) it produces an artificial delay in the lower + * layer (FT2232) that is long enough to finish execution on + * the core but still shorter than any manually inducible delays. + * + */ +enum tap_state arm11_MOVE_PD_RTI_PD_with_delay[] = +{ + TAP_E2D, TAP_UD, TAP_RTI, TAP_RTI, TAP_RTI, TAP_SDS, TAP_CD, TAP_SD +}; + +/** Execute one instruction via ITR repeatedly while + * passing data to the core via DTR on each execution. + * + * No Ready check during transmission. + * + * The executed instruction \em must read data from DTR. + * + * \pre arm11_run_instr_data_prepare() / arm11_run_instr_data_finish() block + * + * \param arm11 Target state variable. + * \param opcode ARM opcode + * \param data Pointer to the data words to be passed to the core + * \param count Number of data words and instruction repetitions + * + */ +void arm11_run_instr_data_to_core_noack(arm11_common_t * arm11, u32 opcode, u32 * data, size_t count) +{ + arm11_add_IR(arm11, ARM11_ITRSEL, -1); + + arm11_add_debug_INST(arm11, opcode, NULL, TAP_PD); + + arm11_add_IR(arm11, ARM11_EXTEST, -1); + + scan_field_t chain5_fields[3]; + + arm11_setup_field(arm11, 32, NULL/*&Data*/, NULL, chain5_fields + 0); + arm11_setup_field(arm11, 1, NULL, NULL /*&Ready*/, chain5_fields + 1); + arm11_setup_field(arm11, 1, NULL, NULL, chain5_fields + 2); + + u8 Readies[count + 1]; + u8 * ReadyPos = Readies; + + while (count--) + { + chain5_fields[0].out_value = (void *)(data++); + chain5_fields[1].in_value = ReadyPos++; + + if (count) + { + jtag_add_dr_scan(asizeof(chain5_fields), chain5_fields, TAP_PD); + jtag_add_pathmove(asizeof(arm11_MOVE_PD_RTI_PD_with_delay), + arm11_MOVE_PD_RTI_PD_with_delay); + } + else + { + jtag_add_dr_scan(asizeof(chain5_fields), chain5_fields, TAP_RTI); + } + } + + arm11_add_IR(arm11, ARM11_INTEST, -1); + + chain5_fields[0].out_value = 0; + chain5_fields[1].in_value = ReadyPos++; + + arm11_add_dr_scan_vc(asizeof(chain5_fields), chain5_fields, TAP_PD); + + jtag_execute_queue(); + + size_t error_count = 0; + + {size_t i; + for (i = 0; i < asizeof(Readies); i++) + { + if (Readies[i] != 1) + { + error_count++; + } + }} + + if (error_count) + ERROR("Transfer errors %d", error_count); } + /** Execute an instruction via ITR while handing data into the core via DTR. * * The executed instruction \em must read data from DTR. @@ -463,7 +581,7 @@ void arm11_run_instr_data_from_core(arm11_common_t * arm11, u32 opcode, u32 * da { do { - jtag_add_dr_scan_vc(asizeof(chain5_fields), chain5_fields, count ? TAP_RTI : TAP_PD); + arm11_add_dr_scan_vc(asizeof(chain5_fields), chain5_fields, count ? TAP_RTI : TAP_PD); jtag_execute_queue(); JTAG_DEBUG("DTR Data %08x Ready %d nRetry %d", Data, Ready, nRetry); @@ -514,7 +632,15 @@ void arm11_run_instr_data_to_core_via_r0(arm11_common_t * arm11, u32 opcode, u32 arm11_run_instr_no_data1(arm11, opcode); } - +/** Apply reads and writes to scan chain 7 + * + * \see arm11_sc7_action_t + * + * \param arm11 Target state variable. + * \param actions A list of read and/or write instructions + * \param count Number of instructions in the list. + * + */ void arm11_sc7_run(arm11_common_t * arm11, arm11_sc7_action_t * actions, size_t count) { arm11_add_debug_SCAN_N(arm11, 0x07, -1); @@ -554,7 +680,7 @@ void arm11_sc7_run(arm11_common_t * arm11, arm11_sc7_action_t * actions, size_t { JTAG_DEBUG("SC7 <= Address %02x Data %08x nRW %d", AddressOut, DataOut, nRW); - jtag_add_dr_scan_vc(asizeof(chain7_fields), chain7_fields, TAP_PD); + arm11_add_dr_scan_vc(asizeof(chain7_fields), chain7_fields, TAP_PD); jtag_execute_queue(); JTAG_DEBUG("SC7 => Address %02x Data %08x Ready %d", AddressIn, DataIn, Ready); @@ -589,23 +715,73 @@ void arm11_sc7_run(arm11_common_t * arm11, arm11_sc7_action_t * actions, size_t }} } -void arm11_sc7_clear_bw(arm11_common_t * arm11) +/** Clear VCR and all breakpoints and watchpoints via scan chain 7 + * + * \param arm11 Target state variable. + * + */ +void arm11_sc7_clear_vbw(arm11_common_t * arm11) { - size_t actions = arm11->brp + arm11->wrp; - - arm11_sc7_action_t clear_bw[actions]; + arm11_sc7_action_t clear_bw[arm11->brp + arm11->wrp + 1]; + arm11_sc7_action_t * pos = clear_bw; {size_t i; - for (i = 0; i < actions; i++) + for (i = 0; i < asizeof(clear_bw); i++) { clear_bw[i].write = true; clear_bw[i].value = 0; - clear_bw[i].address = - i < arm11->brp ? - ARM11_SC7_BCR0 + i : - ARM11_SC7_WCR0 + i - arm11->brp; }} - arm11_sc7_run(arm11, clear_bw, actions); + {size_t i; + for (i = 0; i < arm11->brp; i++) + (pos++)->address = ARM11_SC7_BCR0 + i; + } + + {size_t i; + for (i = 0; i < arm11->wrp; i++) + (pos++)->address = ARM11_SC7_WCR0 + i; + } + + (pos++)->address = ARM11_SC7_VCR; +} + +/** Write VCR register + * + * \param arm11 Target state variable. + * \param value Value to be written + */ +void arm11_sc7_set_vcr(arm11_common_t * arm11, u32 value) +{ + arm11_sc7_action_t set_vcr; + + set_vcr.write = 0; + set_vcr.address = ARM11_SC7_VCR; + set_vcr.value = value; + + + arm11_sc7_run(arm11, &set_vcr, 1); +} + + + +/** Read word from address + * + * \param arm11 Target state variable. + * \param address Memory address to be read + * \param result Pointer where to store result + * + */ +void arm11_read_memory_word(arm11_common_t * arm11, u32 address, u32 * result) +{ + arm11_run_instr_data_prepare(arm11); + + /* MRC p14,0,r0,c0,c5,0 (r0 = address) */ + arm11_run_instr_data_to_core1(arm11, 0xee100e15, address); + + /* LDC p14,c5,[R0],#4 (DTR = [r0]) */ + arm11_run_instr_data_from_core(arm11, 0xecb05e01, result, 1); + + arm11_run_instr_data_finish(arm11); } + diff --git a/src/target/target.c b/src/target/target.c index 27df12fc..61fac56b 100644 --- a/src/target/target.c +++ b/src/target/target.c @@ -88,6 +88,7 @@ extern target_type_t arm926ejs_target; extern target_type_t feroceon_target; extern target_type_t xscale_target; extern target_type_t cortexm3_target; +extern target_type_t arm11_target; target_type_t *target_types[] = { @@ -100,6 +101,7 @@ target_type_t *target_types[] = &feroceon_target, &xscale_target, &cortexm3_target, + &arm11_target, NULL, }; |