* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
+ * Copyright (C) 2008 by Spencer Oliver *
+ * spen@spen-soft.co.uk *
+ * *
+ * Copyright (C) 2008 by Hongtao Zheng *
+ * hontor@126.com *
+ * *
* 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 *
#endif
#include "arm9tdmi.h"
+#include "target_type.h"
-#include "arm7_9_common.h"
-#include "register.h"
-#include "target.h"
-#include "armv4_5.h"
-#include "embeddedice.h"
-#include "log.h"
-#include "jtag.h"
-#include "arm_jtag.h"
-
-#include <stdlib.h>
-#include <string.h>
#if 0
#define _DEBUG_INSTRUCTION_EXECUTION_
#endif
/* cli handling */
-int arm9tdmi_register_commands(struct command_context_s *cmd_ctx);
+int handle_arm9tdmi_catch_vectors_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
/* forward declarations */
-int arm9tdmi_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct target_s *target);
-int arm9tdmi_init_target(struct command_context_s *cmd_ctx, struct target_s *target);
-int arm9tdmi_quit();
-
-/* target function declarations */
-enum target_state arm9tdmi_poll(struct target_s *target);
-int arm9tdmi_halt(target_t *target);
-int arm9tdmi_read_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
-
+int arm9tdmi_target_create( struct target_s *target, Jim_Interp *interp );
+
+int arm9tdmi_quit(void);
+
target_type_t arm9tdmi_target =
{
.name = "arm9tdmi",
.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,
.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,
.remove_watchpoint = arm7_9_remove_watchpoint,
.register_commands = arm9tdmi_register_commands,
- .target_command = arm9tdmi_target_command,
+ .target_create = arm9tdmi_target_create,
.init_target = arm9tdmi_init_target,
+ .examine = arm9tdmi_examine,
.quit = arm9tdmi_quit
};
+arm9tdmi_vector_t arm9tdmi_vectors[] =
+{
+ {"reset", ARM9TDMI_RESET_VECTOR},
+ {"undef", ARM9TDMI_UNDEF_VECTOR},
+ {"swi", ARM9TDMI_SWI_VECTOR},
+ {"pabt", ARM9TDMI_PABT_VECTOR},
+ {"dabt", ARM9TDMI_DABT_VECTOR},
+ {"reserved", ARM9TDMI_RESERVED_VECTOR},
+ {"irq", ARM9TDMI_IRQ_VECTOR},
+ {"fiq", ARM9TDMI_FIQ_VECTOR},
+ {0, 0},
+};
+
int arm9tdmi_examine_debug_reason(target_t *target)
{
+ int retval = ERROR_OK;
/* get pointers to arch-specific information */
armv4_5_common_t *armv4_5 = target->arch_info;
arm7_9_common_t *arm7_9 = armv4_5->arch_info;
-
+
/* only check the debug reason if we don't know it already */
if ((target->debug_reason != DBG_REASON_DBGRQ)
&& (target->debug_reason != DBG_REASON_SINGLESTEP))
{
scan_field_t fields[3];
- u8 databus[4];
- u8 instructionbus[4];
- u8 debug_reason;
+ uint8_t databus[4];
+ uint8_t instructionbus[4];
+ uint8_t debug_reason;
- jtag_add_end_state(TAP_PD);
+ jtag_set_end_state(TAP_DRPAUSE);
- fields[0].device = arm7_9->jtag_info.chain_pos;
+ fields[0].tap = arm7_9->jtag_info.tap;
fields[0].num_bits = 32;
fields[0].out_value = NULL;
- fields[0].out_mask = NULL;
fields[0].in_value = databus;
- fields[0].in_check_value = NULL;
- fields[0].in_check_mask = NULL;
- fields[0].in_handler = NULL;
- fields[0].in_handler_priv = NULL;
-
- fields[1].device = arm7_9->jtag_info.chain_pos;
+
+ fields[1].tap = arm7_9->jtag_info.tap;
fields[1].num_bits = 3;
fields[1].out_value = NULL;
- fields[1].out_mask = NULL;
fields[1].in_value = &debug_reason;
- 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 = arm7_9->jtag_info.chain_pos;
+
+ fields[2].tap = arm7_9->jtag_info.tap;
fields[2].num_bits = 32;
fields[2].out_value = NULL;
- fields[2].out_mask = NULL;
fields[2].in_value = instructionbus;
- fields[2].in_check_value = NULL;
- fields[2].in_check_mask = NULL;
- fields[2].in_handler = NULL;
- fields[2].in_handler_priv = NULL;
-
- arm_jtag_scann(&arm7_9->jtag_info, 0x1);
- arm_jtag_set_instr(&arm7_9->jtag_info, arm7_9->jtag_info.intest_instr);
-
- jtag_add_dr_scan(3, fields, TAP_PD);
- jtag_execute_queue();
-
+
+ if ((retval = arm_jtag_scann(&arm7_9->jtag_info, 0x1)) != ERROR_OK)
+ {
+ return retval;
+ }
+ arm_jtag_set_instr(&arm7_9->jtag_info, arm7_9->jtag_info.intest_instr, NULL);
+
+ jtag_add_dr_scan(3, fields, jtag_set_end_state(TAP_DRPAUSE));
+ if ((retval = jtag_execute_queue()) != ERROR_OK)
+ {
+ return retval;
+ }
+
fields[0].in_value = NULL;
fields[0].out_value = databus;
fields[1].in_value = NULL;
fields[1].out_value = &debug_reason;
fields[2].in_value = NULL;
fields[2].out_value = instructionbus;
-
- jtag_add_dr_scan(3, fields, TAP_PD);
+
+ jtag_add_dr_scan(3, fields, jtag_set_end_state(TAP_DRPAUSE));
if (debug_reason & 0x4)
if (debug_reason & 0x2)
/* put an instruction in the ARM9TDMI pipeline or write the data bus, and optionally read data */
int arm9tdmi_clock_out(arm_jtag_t *jtag_info, u32 instr, u32 out, u32 *in, int sysspeed)
{
+ int retval = ERROR_OK;
scan_field_t fields[3];
- u8 out_buf[4];
- u8 instr_buf[4];
- u8 sysspeed_buf = 0x0;
-
+ uint8_t out_buf[4];
+ uint8_t instr_buf[4];
+ uint8_t sysspeed_buf = 0x0;
+
/* prepare buffer */
buf_set_u32(out_buf, 0, 32, out);
-
- instr = flip_u32(instr, 32);
- buf_set_u32(instr_buf, 0, 32, instr);
-
+
+ buf_set_u32(instr_buf, 0, 32, flip_u32(instr, 32));
+
if (sysspeed)
buf_set_u32(&sysspeed_buf, 2, 1, 1);
-
- jtag_add_end_state(TAP_PD);
- arm_jtag_scann(jtag_info, 0x1);
- arm_jtag_set_instr(jtag_info, jtag_info->intest_instr);
-
- fields[0].device = jtag_info->chain_pos;
- fields[0].num_bits = 32;
- fields[0].out_value = out_buf;
- fields[0].out_mask = NULL;
- if (in)
- {
- fields[0].in_value = (u8*)in;
- } else
+
+ jtag_set_end_state(TAP_DRPAUSE);
+ if ((retval = arm_jtag_scann(jtag_info, 0x1)) != ERROR_OK)
{
- fields[0].in_value = NULL;
+ return retval;
}
- fields[0].in_check_value = NULL;
- fields[0].in_check_mask = NULL;
- fields[0].in_handler = NULL;
- fields[0].in_handler_priv = NULL;
-
- fields[1].device = jtag_info->chain_pos;
+
+ 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 = out_buf;
+ fields[0].in_value = NULL;
+
+ fields[1].tap = jtag_info->tap;
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].tap = jtag_info->tap;
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);
+ if (in)
+ {
+ fields[0].in_value=(uint8_t *)in;
+ jtag_add_dr_scan(3, fields, jtag_get_end_state());
+
+ jtag_add_callback(arm_le_to_h_u32, (uint8_t *)in);
+ }
+ else
+ {
+ jtag_add_dr_scan(3, fields, jtag_get_end_state());
+ }
+
+ jtag_add_runtest(0, jtag_get_end_state());
- jtag_add_runtest(0, -1);
-
#ifdef _DEBUG_INSTRUCTION_EXECUTION_
{
- char* in_string;
- jtag_execute_queue();
-
+ if ((retval = jtag_execute_queue()) != ERROR_OK)
+ {
+ return retval;
+ }
+
if (in)
{
- in_string = buf_to_char((u8*)in, 32);
- DEBUG("instr: 0x%8.8x, out: 0x%8.8x, in: %s", flip_u32(instr, 32), out, in_string);
- free(in_string);
+ LOG_DEBUG("instr: 0x%8.8x, out: 0x%8.8x, in: 0x%8.8x", instr, out, *in);
}
else
- DEBUG("instr: 0x%8.8x, out: 0x%8.8x", flip_u32(instr, 32), out);
+ LOG_DEBUG("instr: 0x%8.8x, out: 0x%8.8x", instr, out);
}
#endif
/* just read data (instruction and data-out = don't care) */
int arm9tdmi_clock_data_in(arm_jtag_t *jtag_info, u32 *in)
{
+ int retval = ERROR_OK;;
scan_field_t fields[3];
- jtag_add_end_state(TAP_PD);
- arm_jtag_scann(jtag_info, 0x1);
- arm_jtag_set_instr(jtag_info, jtag_info->intest_instr);
-
- fields[0].device = jtag_info->chain_pos;
+ jtag_set_end_state(TAP_DRPAUSE);
+ if ((retval = arm_jtag_scann(jtag_info, 0x1)) != 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].out_mask = NULL;
- fields[0].in_value = (u8*)in;
- 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[0].in_value = (uint8_t *)in;
+
+ fields[1].tap = jtag_info->tap;
fields[1].num_bits = 3;
fields[1].out_value = NULL;
- fields[1].out_mask = NULL;
fields[1].in_value = NULL;
- fields[1].in_handler = NULL;
- fields[1].in_handler_priv = NULL;
- fields[1].in_check_value = NULL;
- fields[1].in_check_mask = NULL;
- fields[2].device = jtag_info->chain_pos;
+ fields[2].tap = jtag_info->tap;
fields[2].num_bits = 32;
fields[2].out_value = NULL;
- 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);
-
- jtag_add_runtest(0, -1);
-
+
+ jtag_add_dr_scan(3, fields, jtag_get_end_state());
+
+ jtag_add_callback(arm_le_to_h_u32, (uint8_t *)in);
+
+ jtag_add_runtest(0, jtag_get_end_state());
+
#ifdef _DEBUG_INSTRUCTION_EXECUTION_
{
- char* in_string;
- jtag_execute_queue();
-
+ if ((retval = jtag_execute_queue()) != ERROR_OK)
+ {
+ return retval;
+ }
+
if (in)
{
- in_string = buf_to_char((u8*)in, 32);
- DEBUG("in: %s", in_string);
- free(in_string);
+ LOG_DEBUG("in: 0x%8.8x", *in);
+ }
+ else
+ {
+ LOG_ERROR("BUG: called with in == NULL");
+ }
+ }
+#endif
+
+ return ERROR_OK;
+}
+
+extern void arm_endianness(uint8_t *tmp, void *in, int size, int be, int flip);
+
+static int arm9endianness(uint8_t *in, jtag_callback_data_t size, jtag_callback_data_t be, jtag_callback_data_t captured)
+{
+ arm_endianness((uint8_t *)captured, in, (int)size, (int)be, 0);
+ return ERROR_OK;
+}
+
+/* clock the target, and read the databus
+ * the *in pointer points to a buffer where elements of 'size' bytes
+ * are stored in big (be==1) or little (be==0) endianness
+ */
+int arm9tdmi_clock_data_in_endianness(arm_jtag_t *jtag_info, void *in, int size, int be)
+{
+ int retval = ERROR_OK;
+ scan_field_t fields[3];
+
+ jtag_set_end_state(TAP_DRPAUSE);
+ if ((retval = arm_jtag_scann(jtag_info, 0x1)) != 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;
+ jtag_alloc_in_value32(&fields[0]);
+
+ fields[1].tap = jtag_info->tap;
+ fields[1].num_bits = 3;
+ fields[1].out_value = NULL;
+ fields[1].in_value = NULL;
+
+ fields[2].tap = jtag_info->tap;
+ fields[2].num_bits = 32;
+ fields[2].out_value = NULL;
+ fields[2].in_value = NULL;
+
+ jtag_add_dr_scan(3, fields, jtag_get_end_state());
+
+ jtag_add_callback4(arm9endianness, in, (jtag_callback_data_t)size, (jtag_callback_data_t)be, (jtag_callback_data_t)fields[0].in_value);
+
+ jtag_add_runtest(0, jtag_get_end_state());
+
+#ifdef _DEBUG_INSTRUCTION_EXECUTION_
+ {
+ if ((retval = jtag_execute_queue()) != ERROR_OK)
+ {
+ return retval;
+ }
+
+ if (in)
+ {
+ LOG_DEBUG("in: 0x%8.8x", *(u32*)in);
+ }
+ else
+ {
+ LOG_ERROR("BUG: called with in == NULL");
}
}
#endif
void arm9tdmi_change_to_arm(target_t *target, u32 *r0, u32 *pc)
{
+ int retval = ERROR_OK;
/* get pointers to arch-specific information */
armv4_5_common_t *armv4_5 = target->arch_info;
arm7_9_common_t *arm7_9 = armv4_5->arch_info;
arm_jtag_t *jtag_info = &arm7_9->jtag_info;
-
- /* save r0 before using it and put system in ARM state
+
+ /* save r0 before using it and put system in ARM state
* to allow common handling of ARM and THUMB debugging */
-
+
/* fetch STR r0, [r0] */
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);
/* STR r0, [r0] in Memory */
arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, r0, 0);
- /* MOV r0, r15 fetched, STR in Decode */
+ /* MOV r0, r15 fetched, STR in Decode */
arm9tdmi_clock_out(jtag_info, ARMV4_5_T_MOV(0, 15), 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_T_STR(0, 0), 0, NULL, 0);
/* nothing fetched, STR r0, [r0] in Memory */
arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, pc, 0);
- /* fetch MOV */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_MOV_IM(0, 0x0), 0, NULL, 0);
+ /* use pc-relative LDR to clear r0[1:0] (for switch to ARM mode) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_LDR_PCREL(0), 0, NULL, 0);
+ /* LDR in Decode */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
+ /* LDR in Execute */
arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
+ /* LDR in Memory (to account for interlock) */
arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
/* fetch BX */
arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
/* NOP fetched, BX in Execute (1) */
arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
-
- jtag_execute_queue();
-
+
+ if ((retval = jtag_execute_queue()) != ERROR_OK)
+ {
+ return;
+ }
+
/* fix program counter:
* MOV r0, r15 was the 5th instruction (+8)
* reading PC in Thumb state gives address of instruction + 4
armv4_5_common_t *armv4_5 = target->arch_info;
arm7_9_common_t *arm7_9 = armv4_5->arch_info;
arm_jtag_t *jtag_info = &arm7_9->jtag_info;
-
+
/* STMIA r0-15, [r0] at debug speed
* register values will start to appear on 4th DCLK
*/
/* nothing fetched, STM in MEMORY (i'th cycle) */
arm9tdmi_clock_data_in(jtag_info, core_regs[i]);
}
+}
+
+void arm9tdmi_read_core_regs_target_buffer(target_t *target, u32 mask, void* buffer, int size)
+{
+ int i;
+ /* get pointers to arch-specific information */
+ armv4_5_common_t *armv4_5 = target->arch_info;
+ arm7_9_common_t *arm7_9 = armv4_5->arch_info;
+ arm_jtag_t *jtag_info = &arm7_9->jtag_info;
+ int be = (target->endianness == TARGET_BIG_ENDIAN) ? 1 : 0;
+ u32 *buf_u32 = buffer;
+ uint16_t *buf_u16 = buffer;
+ uint8_t *buf_u8 = buffer;
+
+ /* STMIA r0-15, [r0] at debug speed
+ * register values will start to appear on 4th DCLK
+ */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_STMIA(0, mask & 0xffff, 0, 0), 0, NULL, 0);
+
+ /* fetch NOP, STM in DECODE stage */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ /* fetch NOP, STM in EXECUTE stage (1st cycle) */
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
+ for (i = 0; i <= 15; i++)
+ {
+ if (mask & (1 << i))
+ /* nothing fetched, STM in MEMORY (i'th cycle) */
+ switch (size)
+ {
+ case 4:
+ arm9tdmi_clock_data_in_endianness(jtag_info, buf_u32++, 4, be);
+ break;
+ case 2:
+ arm9tdmi_clock_data_in_endianness(jtag_info, buf_u16++, 2, be);
+ break;
+ case 1:
+ arm9tdmi_clock_data_in_endianness(jtag_info, buf_u8++, 1, be);
+ break;
+ }
+ }
}
void arm9tdmi_read_xpsr(target_t *target, u32 *xpsr, int spsr)
armv4_5_common_t *armv4_5 = target->arch_info;
arm7_9_common_t *arm7_9 = armv4_5->arch_info;
arm_jtag_t *jtag_info = &arm7_9->jtag_info;
-
+
/* MRS r0, cpsr */
arm9tdmi_clock_out(jtag_info, ARMV4_5_MRS(0, spsr & 1), 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);
/* nothing fetched, STR in MEMORY */
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, xpsr, 0);
-
}
void arm9tdmi_write_xpsr(target_t *target, u32 xpsr, int spsr)
armv4_5_common_t *armv4_5 = target->arch_info;
arm7_9_common_t *arm7_9 = armv4_5->arch_info;
arm_jtag_t *jtag_info = &arm7_9->jtag_info;
-
- DEBUG("xpsr: %8.8x, spsr: %i", xpsr, spsr);
+
+ LOG_DEBUG("xpsr: %8.8x, spsr: %i", xpsr, spsr);
/* MSR1 fetched */
arm9tdmi_clock_out(jtag_info, ARMV4_5_MSR_IM(xpsr & 0xff, 0, 1, spsr), 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
}
-void arm9tdmi_write_xpsr_im8(target_t *target, u8 xpsr_im, int rot, int spsr)
+void arm9tdmi_write_xpsr_im8(target_t *target, uint8_t xpsr_im, int rot, int spsr)
{
/* get pointers to arch-specific information */
armv4_5_common_t *armv4_5 = target->arch_info;
arm7_9_common_t *arm7_9 = armv4_5->arch_info;
arm_jtag_t *jtag_info = &arm7_9->jtag_info;
-
- DEBUG("xpsr_im: %2.2x, rot: %i, spsr: %i", xpsr_im, rot, spsr);
-
+
+ LOG_DEBUG("xpsr_im: %2.2x, rot: %i, spsr: %i", xpsr_im, rot, spsr);
+
/* MSR fetched */
arm9tdmi_clock_out(jtag_info, ARMV4_5_MSR_IM(xpsr_im, rot, 1, spsr), 0, NULL, 0);
/* NOP fetched, MSR in DECODE */
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
/* NOP fetched, MSR in EXECUTE (1) */
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
-
+
/* rot == 4 writes flags, which takes only one cycle */
if (rot != 4)
{
armv4_5_common_t *armv4_5 = target->arch_info;
arm7_9_common_t *arm7_9 = armv4_5->arch_info;
arm_jtag_t *jtag_info = &arm7_9->jtag_info;
-
+
/* LDMIA r0-15, [r0] at debug speed
* register values will start to appear on 4th DCLK
*/
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, core_regs[i], NULL, 0);
}
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
-
}
void arm9tdmi_load_word_regs(target_t *target, u32 mask)
/* put system-speed load-multiple into the pipeline */
arm9tdmi_clock_out(jtag_info, ARMV4_5_LDMIA(0, mask & 0xffff, 0, 1), 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 1);
-
}
void arm9tdmi_load_hword_reg(target_t *target, int num)
armv4_5_common_t *armv4_5 = target->arch_info;
arm7_9_common_t *arm7_9 = armv4_5->arch_info;
arm_jtag_t *jtag_info = &arm7_9->jtag_info;
-
+
/* put system-speed load half-word into the pipeline */
arm9tdmi_clock_out(jtag_info, ARMV4_5_LDRH_IP(num, 0), 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 1);
/* put system-speed load byte into the pipeline */
arm9tdmi_clock_out(jtag_info, ARMV4_5_LDRB_IP(num, 0), 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 1);
-
}
void arm9tdmi_store_word_regs(target_t *target, u32 mask)
/* put system-speed store-multiple into the pipeline */
arm9tdmi_clock_out(jtag_info, ARMV4_5_STMIA(0, mask, 0, 1), 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 1);
-
}
void arm9tdmi_store_hword_reg(target_t *target, int num)
/* put system-speed store half-word into the pipeline */
arm9tdmi_clock_out(jtag_info, ARMV4_5_STRH_IP(num, 0), 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 1);
-
}
void arm9tdmi_store_byte_reg(target_t *target, int num)
/* put system-speed store byte into the pipeline */
arm9tdmi_clock_out(jtag_info, ARMV4_5_STRB_IP(num, 0), 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 1);
-
}
void arm9tdmi_write_pc(target_t *target, u32 pc)
armv4_5_common_t *armv4_5 = target->arch_info;
arm7_9_common_t *arm7_9 = armv4_5->arch_info;
arm_jtag_t *jtag_info = &arm7_9->jtag_info;
-
+
/* LDMIA r0-15, [r0] at debug speed
* register values will start to appear on 4th DCLK
*/
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
/* fetch NOP, LDM in EXECUTE stage (5th cycle) */
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
-
}
void arm9tdmi_branch_resume(target_t *target)
armv4_5_common_t *armv4_5 = target->arch_info;
arm7_9_common_t *arm7_9 = armv4_5->arch_info;
arm_jtag_t *jtag_info = &arm7_9->jtag_info;
-
+
arm9tdmi_clock_out(jtag_info, ARMV4_5_B(0xfffffc, 0), 0, NULL, 0);
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 1);
-
}
void arm9tdmi_branch_resume_thumb(target_t *target)
{
- DEBUG("");
-
+ LOG_DEBUG("-");
+
/* get pointers to arch-specific information */
armv4_5_common_t *armv4_5 = target->arch_info;
arm7_9_common_t *arm7_9 = armv4_5->arch_info;
/* Branch and eXchange */
arm9tdmi_clock_out(jtag_info, ARMV4_5_BX(0), 0, NULL, 0);
-
+
embeddedice_read_reg(dbg_stat);
-
+
/* fetch NOP, BX in DECODE stage */
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
-
+
embeddedice_read_reg(dbg_stat);
-
+
/* fetch NOP, BX in EXECUTE stage (1st cycle) */
arm9tdmi_clock_out(jtag_info, ARMV4_5_NOP, 0, NULL, 0);
/* target is now in Thumb state */
embeddedice_read_reg(dbg_stat);
- /* clean r0 bits to avoid alignment problems */
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_MOV_IM(0, 0x0), 0, NULL, 0);
/* load r0 value, MOV_IM in Decode*/
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_LDR(0, 0), 0, NULL, 0);
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_LDR_PCREL(0), 0, NULL, 0);
/* fetch NOP, LDR in Decode, MOV_IM in Execute */
arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
/* fetch NOP, LDR in Execute */
arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, buf_get_u32(armv4_5->core_cache->reg_list[0].value, 0, 32), NULL, 0);
/* nothing fetched, LDR in EXECUTE stage (3rd cycle) */
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);
embeddedice_read_reg(dbg_stat);
-
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_B(0x7f6), 0, NULL, 1);
- arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_B(0x7f7), 0, NULL, 1);
+ arm9tdmi_clock_out(jtag_info, ARMV4_5_T_NOP, 0, NULL, 0);
}
-void arm9tdmi_enable_single_step(target_t *target)
+void arm9tdmi_enable_single_step(target_t *target, u32 next_pc)
{
/* get pointers to arch-specific information */
armv4_5_common_t *armv4_5 = target->arch_info;
arm7_9_common_t *arm7_9 = armv4_5->arch_info;
- arm9tdmi_common_t *arm9 = arm7_9->arch_info;
-
- if (arm9->has_single_step)
+
+ if (arm7_9->has_single_step)
{
buf_set_u32(arm7_9->eice_cache->reg_list[EICE_DBG_CTRL].value, 3, 1, 1);
embeddedice_store_reg(&arm7_9->eice_cache->reg_list[EICE_DBG_CTRL]);
}
else
{
- arm7_9_enable_eice_step(target);
+ arm7_9_enable_eice_step(target, next_pc);
}
}
/* get pointers to arch-specific information */
armv4_5_common_t *armv4_5 = target->arch_info;
arm7_9_common_t *arm7_9 = armv4_5->arch_info;
- arm9tdmi_common_t *arm9 = arm7_9->arch_info;
-
- if (arm9->has_single_step)
+
+ if (arm7_9->has_single_step)
{
buf_set_u32(arm7_9->eice_cache->reg_list[EICE_DBG_CTRL].value, 3, 1, 0);
embeddedice_store_reg(&arm7_9->eice_cache->reg_list[EICE_DBG_CTRL]);
reg_cache_t **cache_p = register_get_last_cache_p(&target->reg_cache);
/* get pointers to arch-specific information */
armv4_5_common_t *armv4_5 = target->arch_info;
- arm7_9_common_t *arm7_9 = armv4_5->arch_info;
- arm_jtag_t *jtag_info = &arm7_9->jtag_info;
- arm9tdmi_common_t *arm9tdmi = arm7_9->arch_info;
-
(*cache_p) = armv4_5_build_reg_cache(target, armv4_5);
armv4_5->core_cache = (*cache_p);
-
- (*cache_p)->next = embeddedice_build_reg_cache(target, jtag_info, 0);
- arm7_9->eice_cache = (*cache_p)->next;
-
- if (arm9tdmi->has_monitor_mode)
- (*cache_p)->next->reg_list[0].size = 6;
- else
- (*cache_p)->next->reg_list[0].size = 4;
-
- (*cache_p)->next->reg_list[1].size = 5;
+}
+int arm9tdmi_examine(struct target_s *target)
+{
+ /* get pointers to arch-specific information */
+ int retval;
+ armv4_5_common_t *armv4_5 = target->arch_info;
+ arm7_9_common_t *arm7_9 = armv4_5->arch_info;
+ if (!target_was_examined(target))
+ {
+ reg_cache_t **cache_p = register_get_last_cache_p(&target->reg_cache);
+ reg_cache_t *t;
+ /* one extra register (vector catch) */
+ t=embeddedice_build_reg_cache(target, arm7_9);
+ if (t==NULL)
+ return ERROR_FAIL;
+ (*cache_p) = t;
+ arm7_9->eice_cache = (*cache_p);
+
+ if (arm7_9->etm_ctx)
+ {
+ arm_jtag_t *jtag_info = &arm7_9->jtag_info;
+ (*cache_p)->next = etm_build_reg_cache(target, jtag_info, arm7_9->etm_ctx);
+ arm7_9->etm_ctx->reg_cache = (*cache_p)->next;
+ }
+ target_set_examined(target);
+ }
+ if ((retval=embeddedice_setup(target))!=ERROR_OK)
+ return retval;
+ if ((retval=arm7_9_setup(target))!=ERROR_OK)
+ return retval;
+ if (arm7_9->etm_ctx)
+ {
+ if ((retval=etm_setup(target))!=ERROR_OK)
+ return retval;
+ }
+ return ERROR_OK;
}
int arm9tdmi_init_target(struct command_context_s *cmd_ctx, struct target_s *target)
{
-
+
arm9tdmi_build_reg_cache(target);
-
+
return ERROR_OK;
-
}
-int arm9tdmi_quit()
+int arm9tdmi_quit(void)
{
-
return ERROR_OK;
}
-int arm9tdmi_init_arch_info(target_t *target, arm9tdmi_common_t *arm9tdmi, int chain_pos, char *variant)
+int arm9tdmi_init_arch_info(target_t *target, arm9tdmi_common_t *arm9tdmi, jtag_tap_t *tap)
{
armv4_5_common_t *armv4_5;
arm7_9_common_t *arm7_9;
-
+
arm7_9 = &arm9tdmi->arm7_9_common;
armv4_5 = &arm7_9->armv4_5_common;
-
+
/* prepare JTAG information for the new target */
- arm7_9->jtag_info.chain_pos = chain_pos;
+ arm7_9->jtag_info.tap = tap;
arm7_9->jtag_info.scann_size = 5;
-
+
/* register arch-specific functions */
arm7_9->examine_debug_reason = arm9tdmi_examine_debug_reason;
arm7_9->change_to_arm = arm9tdmi_change_to_arm;
arm7_9->read_core_regs = arm9tdmi_read_core_regs;
+ arm7_9->read_core_regs_target_buffer = arm9tdmi_read_core_regs_target_buffer;
arm7_9->read_xpsr = arm9tdmi_read_xpsr;
-
+
arm7_9->write_xpsr = arm9tdmi_write_xpsr;
arm7_9->write_xpsr_im8 = arm9tdmi_write_xpsr_im8;
arm7_9->write_core_regs = arm9tdmi_write_core_regs;
-
+
arm7_9->load_word_regs = arm9tdmi_load_word_regs;
arm7_9->load_hword_reg = arm9tdmi_load_hword_reg;
arm7_9->load_byte_reg = arm9tdmi_load_byte_reg;
-
+
arm7_9->store_word_regs = arm9tdmi_store_word_regs;
arm7_9->store_hword_reg = arm9tdmi_store_hword_reg;
arm7_9->store_byte_reg = arm9tdmi_store_byte_reg;
-
+
arm7_9->write_pc = arm9tdmi_write_pc;
arm7_9->branch_resume = arm9tdmi_branch_resume;
arm7_9->branch_resume_thumb = arm9tdmi_branch_resume_thumb;
arm7_9->enable_single_step = arm9tdmi_enable_single_step;
arm7_9->disable_single_step = arm9tdmi_disable_single_step;
-
+
arm7_9->pre_debug_entry = NULL;
arm7_9->post_debug_entry = NULL;
-
+
arm7_9->pre_restore_context = NULL;
arm7_9->post_restore_context = NULL;
/* initialize arch-specific breakpoint handling */
- buf_set_u32((u8*)(&arm7_9->arm_bkpt), 0, 32, 0xdeeedeee);
- buf_set_u32((u8*)(&arm7_9->thumb_bkpt), 0, 16, 0xdeee);
-
- arm7_9->sw_bkpts_use_wp = 1;
- arm7_9->sw_bkpts_enabled = 0;
+ arm7_9->arm_bkpt = 0xdeeedeee;
+ arm7_9->thumb_bkpt = 0xdeee;
+
arm7_9->dbgreq_adjust_pc = 3;
arm7_9->arch_info = arm9tdmi;
- arm7_9->use_dbgrq = 1;
-
+
arm9tdmi->common_magic = ARM9TDMI_COMMON_MAGIC;
- arm9tdmi->has_monitor_mode = 0;
- arm9tdmi->has_single_step = 0;
arm9tdmi->arch_info = NULL;
- if (variant)
- {
- if (strcmp(variant, "arm920t") == 0)
- arm9tdmi->has_single_step = 1;
- else if (strcmp(variant, "arm922t") == 0)
- arm9tdmi->has_single_step = 1;
- else if (strcmp(variant, "arm940t") == 0)
- arm9tdmi->has_single_step = 1;
- }
-
arm7_9_init_arch_info(target, arm7_9);
-
+
+ /* override use of DBGRQ, this is safe on ARM9TDMI */
+ arm7_9->use_dbgrq = 1;
+
+ /* all ARM9s have the vector catch register */
+ arm7_9->has_vector_catch = 1;
+
return ERROR_OK;
}
-/* target arm9tdmi <endianess> <startup_mode> <chain_pos> <variant>*/
-int arm9tdmi_target_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct target_s *target)
+int arm9tdmi_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)
{
- int chain_pos;
- char *variant = NULL;
- arm9tdmi_common_t *arm9tdmi = malloc(sizeof(arm9tdmi_common_t));
+ armv4_5_common_t *armv4_5 = target->arch_info;
+ arm7_9_common_t *arm7_9;
+ arm9tdmi_common_t *arm9tdmi;
+
+ if (armv4_5->common_magic != ARMV4_5_COMMON_MAGIC)
+ {
+ return -1;
+ }
- if (argc < 4)
+ arm7_9 = armv4_5->arch_info;
+ if (arm7_9->common_magic != ARM7_9_COMMON_MAGIC)
{
- ERROR("'target arm9tdmi' requires at least one additional argument");
- exit(-1);
+ return -1;
}
-
- chain_pos = strtoul(args[3], NULL, 0);
-
- if (argc >= 5)
- variant = strdup(args[4]);
-
- arm9tdmi_init_arch_info(target, arm9tdmi, chain_pos, variant);
-
+
+ arm9tdmi = arm7_9->arch_info;
+ if (arm9tdmi->common_magic != ARM9TDMI_COMMON_MAGIC)
+ {
+ return -1;
+ }
+
+ *armv4_5_p = armv4_5;
+ *arm7_9_p = arm7_9;
+ *arm9tdmi_p = arm9tdmi;
+
+ return ERROR_OK;
+}
+
+int arm9tdmi_target_create(struct target_s *target, Jim_Interp *interp)
+{
+ arm9tdmi_common_t *arm9tdmi = calloc(1,sizeof(arm9tdmi_common_t));
+
+ arm9tdmi_init_arch_info(target, arm9tdmi, target->tap);
+
return ERROR_OK;
}
int arm9tdmi_register_commands(struct command_context_s *cmd_ctx)
{
int retval;
-
+ command_t *arm9tdmi_cmd;
+
retval = arm7_9_register_commands(cmd_ctx);
-
- return ERROR_OK;
+ arm9tdmi_cmd = register_command(cmd_ctx, NULL, "arm9tdmi", NULL, COMMAND_ANY, "arm9tdmi specific commands");
+ register_command(cmd_ctx, arm9tdmi_cmd, "vector_catch", handle_arm9tdmi_catch_vectors_command, COMMAND_EXEC, "catch arm920t vectors ['all'|'none'|'<vec1 vec2 ...>']");
+ return retval;
}
+int handle_arm9tdmi_catch_vectors_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+{
+ target_t *target = get_current_target(cmd_ctx);
+ armv4_5_common_t *armv4_5;
+ arm7_9_common_t *arm7_9;
+ arm9tdmi_common_t *arm9tdmi;
+ reg_t *vector_catch;
+ u32 vector_catch_value;
+ int i, j;
+
+ if (arm9tdmi_get_arch_pointers(target, &armv4_5, &arm7_9, &arm9tdmi) != ERROR_OK)
+ {
+ command_print(cmd_ctx, "current target isn't an ARM9TDMI based target");
+ return ERROR_OK;
+ }
+
+ vector_catch = &arm7_9->eice_cache->reg_list[EICE_VEC_CATCH];
+
+ /* read the vector catch register if necessary */
+ if (!vector_catch->valid)
+ embeddedice_read_reg(vector_catch);
+
+ /* get the current setting */
+ vector_catch_value = buf_get_u32(vector_catch->value, 0, 32);
+
+ if (argc > 0)
+ {
+ vector_catch_value = 0x0;
+ if (strcmp(args[0], "all") == 0)
+ {
+ vector_catch_value = 0xdf;
+ }
+ else if (strcmp(args[0], "none") == 0)
+ {
+ /* do nothing */
+ }
+ else
+ {
+ for (i = 0; i < argc; i++)
+ {
+ /* go through list of vectors */
+ for (j = 0; arm9tdmi_vectors[j].name; j++)
+ {
+ if (strcmp(args[i], arm9tdmi_vectors[j].name) == 0)
+ {
+ vector_catch_value |= arm9tdmi_vectors[j].value;
+ break;
+ }
+ }
+
+ /* complain if vector wasn't found */
+ if (!arm9tdmi_vectors[j].name)
+ {
+ command_print(cmd_ctx, "vector '%s' not found, leaving current setting unchanged", args[i]);
+
+ /* reread current setting */
+ vector_catch_value = buf_get_u32(vector_catch->value, 0, 32);
+
+ break;
+ }
+ }
+ }
+
+ /* store new settings */
+ buf_set_u32(vector_catch->value, 0, 32, vector_catch_value);
+ embeddedice_store_reg(vector_catch);
+ }
+
+ /* output current settings (skip RESERVED vector) */
+ for (i = 0; i < 8; i++)
+ {
+ if (i != 5)
+ {
+ command_print(cmd_ctx, "%s: %s", arm9tdmi_vectors[i].name,
+ (vector_catch_value & (1 << i)) ? "catch" : "don't catch");
+ }
+ }
+
+ return ERROR_OK;
+}
projects / fw / openocd / blobdiff