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- merged support for Cortex-M3 from cortex-m3 branch (thanks to Magnus Lundin) 

git-svn-id: svn://svn.berlios.de/openocd/trunk@170 b42882b7-edfa-0310-969c-e2dbd0fdcd60
__archive__
drath 2007-06-14 14:48:22 +00:00
parent 53d1f9b2ca
commit 09883194f8
10 changed files with 3272 additions and 4 deletions
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4
src/flash/Makefile.am
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@ -1,5 +1,5 @@
INCLUDES = -I$(top_srcdir)/src/helper -I$(top_srcdir)/src/jtag -I$(top_srcdir)/src/target $(all_includes)
METASOURCES = AUTO
noinst_LIBRARIES = libflash.a
libflash_a_SOURCES = flash.c lpc2000.c cfi.c non_cfi.c at91sam7.c str7x.c str9x.c nand.c lpc3180_nand_controller.c
noinst_HEADERS = flash.h lpc2000.h cfi.h non_cfi.h at91sam7.h str7x.h str9x.h nand.h lpc3180_nand_controller.h
libflash_a_SOURCES = flash.c lpc2000.c cfi.c non_cfi.c at91sam7.c str7x.c str9x.c nand.c lpc3180_nand_controller.c stellaris.c
noinst_HEADERS = flash.h lpc2000.h cfi.h non_cfi.h at91sam7.h str7x.h str9x.h nand.h lpc3180_nand_controller.h stellaris.h

2
src/flash/flash.c
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@ -55,6 +55,7 @@ extern flash_driver_t cfi_flash;
extern flash_driver_t at91sam7_flash;
extern flash_driver_t str7x_flash;
extern flash_driver_t str9x_flash;
extern flash_driver_t stellaris_flash;
flash_driver_t *flash_drivers[] =
{
@ -63,6 +64,7 @@ flash_driver_t *flash_drivers[] =
&at91sam7_flash,
&str7x_flash,
&str9x_flash,
&stellaris_flash,
NULL,
};

4
src/target/Makefile.am
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@ -3,7 +3,7 @@ METASOURCES = AUTO
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 etb.c xscale.c arm_simulator.c image.c
arm966e.c arm926ejs.c etb.c xscale.c arm_simulator.c image.c armv7m.c cortex_m3.c cortex_swjdp.c
noinst_HEADERS = target.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
arm_disassembler.h arm966e.h arm926ejs.h etb.h xscale.h arm_simulator.h image.h armv7m.h cortex_m3.h cortex_swjdp.h

590
src/target/armv7m.c Normal file
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@ -0,0 +1,590 @@
/***************************************************************************
* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* Copyright (C) 2006 by Magnus Lundin *
* lundin@mlu.mine.nu *
* *
* 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 "replacements.h"
#include "armv7m.h"
#include "register.h"
#include "target.h"
#include "log.h"
#include "jtag.h"
#include "arm_jtag.h"
#include <stdlib.h>
#include <string.h>
#if 0
#define _DEBUG_INSTRUCTION_EXECUTION_
#endif
char* armv7m_mode_strings[] =
{
"Handler", "Thread"
};
char* armv7m_state_strings[] =
{
"Thumb", "Debug"
};
char* armv7m_exception_strings[] =
{
"", "Reset", "NMI", "HardFault", "MemManage", "BusFault", "UsageFault", "RESERVED", "RESERVED", "RESERVED", "RESERVED",
"SVCall", "DebugMonitor", "RESERVED", "PendSV", "SysTick"
};
char* armv7m_core_reg_list[] =
{
/* Registers accessed through core debug */
"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12",
"sp", "lr", "pc",
"xPSR", "msp", "psp",
/* Registers accessed through MSR instructions */
// "apsr", "iapsr", "ipsr", "epsr",
"primask", "basepri", "faultmask", "control"
};
char* armv7m_core_dbgreg_list[] =
{
/* Registers accessed through core debug */
"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12",
"sp", "lr", "pc",
"xPSR", "msp", "psp",
/* Registers accessed through MSR instructions */
// "dbg_apsr", "iapsr", "ipsr", "epsr",
"primask", "basepri", "faultmask", "dbg_control"
};
u8 armv7m_gdb_dummy_fp_value[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
reg_t armv7m_gdb_dummy_fp_reg =
{
"GDB dummy floating-point register", armv7m_gdb_dummy_fp_value, 0, 1, 96, NULL, 0, NULL, 0
};
armv7m_core_reg_t armv7m_core_reg_list_arch_info[] =
{
/* CORE_GP are accesible using the core debug registers */
{0, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
{1, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
{2, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
{3, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
{4, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
{5, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
{6, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
{7, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
{8, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
{9, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
{10, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
{11, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
{12, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
{13, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
{14, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
{15, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL},
{16, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL}, /* xPSR */
{17, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL}, /* MSP */
{18, ARMV7M_REGISTER_CORE_GP, ARMV7M_MODE_ANY, NULL, NULL}, /* PSP */
/* CORE_SP are accesible using MSR and MRS instructions */
// {0x00, ARMV7M_REGISTER_CORE_SP, ARMV7M_MODE_ANY, NULL, NULL}, /* APSR */
// {0x01, ARMV7M_REGISTER_CORE_SP, ARMV7M_MODE_ANY, NULL, NULL}, /* IAPSR */
// {0x05, ARMV7M_REGISTER_CORE_SP, ARMV7M_MODE_ANY, NULL, NULL}, /* IPSR */
// {0x06, ARMV7M_REGISTER_CORE_SP, ARMV7M_MODE_ANY, NULL, NULL}, /* EPSR */
{0x10, ARMV7M_REGISTER_CORE_SP, ARMV7M_MODE_ANY, NULL, NULL}, /* PRIMASK */
{0x11, ARMV7M_REGISTER_CORE_SP, ARMV7M_MODE_ANY, NULL, NULL}, /* BASEPRI */
{0x13, ARMV7M_REGISTER_CORE_SP, ARMV7M_MODE_ANY, NULL, NULL}, /* FAULTMASK */
{0x14, ARMV7M_REGISTER_CORE_SP, ARMV7M_MODE_ANY, NULL, NULL} /* CONTROL */
};
int armv7m_core_reg_arch_type = -1;
/* Keep different contexts for the process being debugged and debug algorithms */
enum armv7m_runcontext armv7m_get_context(target_t *target)
{
/* get pointers to arch-specific information */
armv7m_common_t *armv7m = target->arch_info;
if (armv7m->process_context == armv7m->core_cache) return ARMV7M_PROCESS_CONTEXT;
if (armv7m->debug_context == armv7m->core_cache) return ARMV7M_DEBUG_CONTEXT;
ERROR("Invalid runcontext");
exit(-1);
}
int armv7m_use_context(target_t *target, enum armv7m_runcontext new_ctx)
{
int i;
/* get pointers to arch-specific information */
armv7m_common_t *armv7m = target->arch_info;
if ((target->state != TARGET_HALTED) && (target->state != TARGET_RESET))
{
WARNING("target not halted, switch context ");
return ERROR_TARGET_NOT_HALTED;
}
if (new_ctx == armv7m_get_context(target))
return ERROR_OK;
switch (new_ctx)
{
case ARMV7M_PROCESS_CONTEXT:
armv7m->core_cache = armv7m->process_context;
break;
case ARMV7M_DEBUG_CONTEXT:
armv7m->core_cache = armv7m->debug_context;
break;
default:
ERROR("Invalid runcontext");
exit(-1);
}
/* Mark registers in new context as dirty to force reload when run */
for (i = 0; i < armv7m->core_cache->num_regs-1; i++) /* EXCLUDE CONTROL TODOLATER : CHECK THIS */
{
armv7m->core_cache->reg_list[i].dirty = 1;
}
return ERROR_OK;
}
/* Core state functions */
char enamebuf[32];
char *armv7m_exception_string(int number)
{
if ((number<0)|(number>511)) return "Invalid exception";
if (number<16) return armv7m_exception_strings[number];
sprintf(enamebuf,"External Interrupt(%i)",number-16);
return enamebuf;
}
int armv7m_get_core_reg(reg_t *reg)
{
int retval;
armv7m_core_reg_t *armv7m_reg = reg->arch_info;
target_t *target = armv7m_reg->target;
armv7m_common_t *armv7m_target = target->arch_info;
if (target->state != TARGET_HALTED)
{
return ERROR_TARGET_NOT_HALTED;
}
retval = armv7m_target->read_core_reg(target, armv7m_reg->num);
return retval;
}
int armv7m_set_core_reg(reg_t *reg, u8 *buf)
{
armv7m_core_reg_t *armv7m_reg = reg->arch_info;
target_t *target = armv7m_reg->target;
armv7m_common_t *armv7m_target = target->arch_info;
u32 value = buf_get_u32(buf, 0, 32);
if (target->state != TARGET_HALTED)
{
return ERROR_TARGET_NOT_HALTED;
}
buf_set_u32(reg->value, 0, 32, value);
reg->dirty = 1;
reg->valid = 1;
return ERROR_OK;
}
int armv7m_read_core_reg(struct target_s *target, int num)
{
u32 reg_value;
int retval;
armv7m_core_reg_t * armv7m_core_reg;
/* get pointers to arch-specific information */
armv7m_common_t *armv7m = target->arch_info;
if ((num < 0) || (num >= ARMV7NUMCOREREGS))
return ERROR_INVALID_ARGUMENTS;
armv7m_core_reg = armv7m->core_cache->reg_list[num].arch_info;
retval = armv7m->load_core_reg_u32(target, armv7m_core_reg->type, armv7m_core_reg->num, &reg_value);
buf_set_u32(armv7m->core_cache->reg_list[num].value, 0, 32, reg_value);
armv7m->core_cache->reg_list[num].valid=1;
armv7m->core_cache->reg_list[num].dirty=0;
return ERROR_OK;
}
int armv7m_write_core_reg(struct target_s *target, int num)
{
int retval;
u32 reg_value;
armv7m_core_reg_t * armv7m_core_reg;
/* get pointers to arch-specific information */
armv7m_common_t *armv7m = target->arch_info;
if ((num < 0) || (num >= ARMV7NUMCOREREGS))
return ERROR_INVALID_ARGUMENTS;
reg_value = buf_get_u32(armv7m->core_cache->reg_list[num].value, 0, 32);
armv7m_core_reg = armv7m->core_cache->reg_list[num].arch_info;
retval = armv7m->store_core_reg_u32(target, armv7m_core_reg->type, armv7m_core_reg->num, reg_value);
if (retval != ERROR_OK)
{
ERROR("JTAG failure");
armv7m->core_cache->reg_list[num].dirty=1;
return ERROR_JTAG_DEVICE_ERROR;
}
DEBUG("write core reg %i value 0x%x",num ,reg_value);
armv7m->core_cache->reg_list[num].valid=1;
armv7m->core_cache->reg_list[num].dirty=0;
return ERROR_OK;
}
int armv7m_invalidate_core_regs(target_t *target)
{
/* get pointers to arch-specific information */
armv7m_common_t *armv7m = target->arch_info;
int i;
for (i = 0; i < armv7m->core_cache->num_regs; i++)
{
armv7m->core_cache->reg_list[i].valid = 0;
armv7m->core_cache->reg_list[i].dirty = 0;
}
return ERROR_OK;
}
int armv7m_get_gdb_reg_list(target_t *target, reg_t **reg_list[], int *reg_list_size)
{
/* get pointers to arch-specific information */
armv7m_common_t *armv7m = target->arch_info;
int i;
if (target->state != TARGET_HALTED)
{
return ERROR_TARGET_NOT_HALTED;
}
*reg_list_size = 26;
*reg_list = malloc(sizeof(reg_t*) * (*reg_list_size));
/* TODOLATER correct list of registers, names ? */
for (i = 0; i < *reg_list_size; i++)
{
if (i<ARMV7NUMCOREREGS)
(*reg_list)[i] = &armv7m->process_context->reg_list[i];
//(*reg_list)[i] = &armv7m->core_cache->reg_list[i];
else
(*reg_list)[i] = &armv7m_gdb_dummy_fp_reg;
}
/* ARMV7M is always in thumb mode, try to make GDB understand this if it does not support this arch */
//armv7m->core_cache->reg_list[15].value[0] |= 1;
armv7m->process_context->reg_list[15].value[0] |= 1;
//armv7m->core_cache->reg_list[ARMV7M_xPSR].value[0] = (1<<5);
//armv7m->process_context->reg_list[ARMV7M_xPSR].value[0] = (1<<5);
(*reg_list)[25] = &armv7m->process_context->reg_list[ARMV7M_xPSR];
//(*reg_list)[25] = &armv7m->process_context->reg_list[ARMV7M_xPSR];
return ERROR_OK;
}
int armv7m_run_algorithm(struct target_s *target, int num_mem_params, mem_param_t *mem_params, int num_reg_params, reg_param_t *reg_params, u32 entry_point, u32 exit_point, int timeout_ms, void *arch_info)
{
// get pointers to arch-specific information
armv7m_common_t *armv7m = target->arch_info;
armv7m_algorithm_t *armv7m_algorithm_info = arch_info;
enum armv7m_state core_state = armv7m->core_state;
enum armv7m_mode core_mode = armv7m->core_mode;
int retval = ERROR_OK;
u32 pc;
int exit_breakpoint_size = 0;
int i;
armv7m->core_state = core_state;
armv7m->core_mode = core_mode;
if (armv7m_algorithm_info->common_magic != ARMV7M_COMMON_MAGIC)
{
ERROR("current target isn't an ARMV7M target");
return ERROR_TARGET_INVALID;
}
if (target->state != TARGET_HALTED)
{
WARNING("target not halted");
return ERROR_TARGET_NOT_HALTED;
}
/* refresh core register cache */
/* Not needed if core register cache is always consistent with target process state */
armv7m_use_context(target, ARMV7M_DEBUG_CONTEXT);
for (i = 0; i < num_mem_params; i++)
{
target_write_buffer(target, mem_params[i].address, mem_params[i].size, mem_params[i].value);
}
for (i = 0; i < num_reg_params; i++)
{
reg_t *reg = register_get_by_name(armv7m->core_cache, reg_params[i].reg_name, 0);
//reg_t *reg = register_get_by_name(armv7m->debug_context, reg_params[i].reg_name, 0);
//armv7m_core_reg_t * armv7m_core_reg = reg->arch_info;
u32 regvalue;
if (!reg)
{
ERROR("BUG: register '%s' not found", reg_params[i].reg_name);
exit(-1);
}
if (reg->size != reg_params[i].size)
{
ERROR("BUG: register '%s' size doesn't match reg_params[i].size", reg_params[i].reg_name);
exit(-1);
}
regvalue = buf_get_u32(reg_params[i].value, 0, 32);
//armv7m->store_core_reg_u32(target, armv7m_core_reg->type, armv7m_core_reg->num, regvalue);
armv7m_set_core_reg(reg, reg_params[i].value);
}
/* ARMV7M always runs in Tumb state */
exit_breakpoint_size = 2;
if ((retval = breakpoint_add(target, exit_point, exit_breakpoint_size, BKPT_SOFT)) != ERROR_OK)
{
ERROR("can't add breakpoint to finish algorithm execution");
return ERROR_TARGET_FAILURE;
}
/* This code relies on the target specific resume() and poll()->debug_entry()
sequence to write register values to the processor and the read them back */
target->type->resume(target, 0, entry_point, 1, 1);
target->type->poll(target);
while (target->state != TARGET_HALTED)
{
usleep(5000);
target->type->poll(target);
if ((timeout_ms -= 5) <= 0)
{
ERROR("timeout waiting for algorithm to complete, trying to halt target");
target->type->halt(target);
timeout_ms = 1000;
while (target->state != TARGET_HALTED)
{
usleep(10000);
target->type->poll(target);
if ((timeout_ms -= 10) <= 0)
{
ERROR("target didn't reenter debug state, exiting");
exit(-1);
}
}
armv7m->load_core_reg_u32(target, ARMV7M_REGISTER_CORE_GP, 15, &pc);
DEBUG("failed algoritm halted at 0x%x ",pc);
retval = ERROR_TARGET_TIMEOUT;
}
}
breakpoint_remove(target, exit_point);
/* Read memory values to mem_params[] */
for (i = 0; i < num_mem_params; i++)
{
if (mem_params[i].direction != PARAM_OUT)
target_read_buffer(target, mem_params[i].address, mem_params[i].size, mem_params[i].value);
}
/* Copy core register values to reg_params[] */
for (i = 0; i < num_reg_params; i++)
{
if (reg_params[i].direction != PARAM_OUT)
{
//reg_t *reg = register_get_by_name(armv7m->core_cache, reg_params[i].reg_name, 0);
reg_t *reg = register_get_by_name(armv7m->debug_context, reg_params[i].reg_name, 0);
u32 regvalue;
if (!reg)
{
ERROR("BUG: register '%s' not found", reg_params[i].reg_name);
exit(-1);
}
if (reg->size != reg_params[i].size)
{
ERROR("BUG: register '%s' size doesn't match reg_params[i].size", reg_params[i].reg_name);
exit(-1);
}
armv7m_core_reg_t * armv7m_core_reg = reg->arch_info;
//armv7m->load_core_reg_u32(target, armv7m_core_reg->type, armv7m_core_reg->num, &regvalue);
//buf_set_u32(reg_params[i].value, 0, 32, regvalue);
buf_set_u32(reg_params[i].value, 0, 32, buf_get_u32(reg->value, 0, 32));
}
}
/* Mark all core registers !! except control !! as valid but dirty */
/* This will be done by armv7m_use_context in resume function */
//for (i = 0; i < armv7m->core_cache->num_regs-1; i++)
//{
// armv7m->core_cache->reg_list[i].dirty = 1;
//}
// ????armv7m->core_state = core_state;
// ????armv7m->core_mode = core_mode;
return retval;
}
int armv7m_arch_state(struct target_s *target, char *buf, int buf_size)
{
/* get pointers to arch-specific information */
armv7m_common_t *armv7m = target->arch_info;
snprintf(buf, buf_size,
"target halted in %s state due to %s, current mode: %s %s\nxPSR: 0x%8.8x pc: 0x%8.8x",
armv7m_state_strings[armv7m->core_state],
target_debug_reason_strings[target->debug_reason],
armv7m_mode_strings[armv7m->core_mode],
armv7m_exception_string(armv7m->exception_number),
buf_get_u32(armv7m->core_cache->reg_list[ARMV7M_xPSR].value, 0, 32),
buf_get_u32(armv7m->core_cache->reg_list[15].value, 0, 32));
return ERROR_OK;
}
reg_cache_t *armv7m_build_reg_cache(target_t *target)
{
/* get pointers to arch-specific information */
armv7m_common_t *armv7m = target->arch_info;
arm_jtag_t *jtag_info = &armv7m->jtag_info;
int num_regs = ARMV7NUMCOREREGS;
reg_cache_t **cache_p = register_get_last_cache_p(&target->reg_cache);
reg_cache_t *cache = malloc(sizeof(reg_cache_t));
reg_t *reg_list = malloc(sizeof(reg_t) * num_regs);
armv7m_core_reg_t *arch_info = malloc(sizeof(armv7m_core_reg_t) * num_regs);
int i;
if (armv7m_core_reg_arch_type == -1)
armv7m_core_reg_arch_type = register_reg_arch_type(armv7m_get_core_reg, armv7m_set_core_reg);
/* Build the process context cache */
cache->name = "arm v7m registers";
cache->next = NULL;
cache->reg_list = reg_list;
cache->num_regs = num_regs;
(*cache_p) = cache;
armv7m->core_cache = cache;
armv7m->process_context = cache;
for (i = 0; i < num_regs; i++)
{
arch_info[i] = armv7m_core_reg_list_arch_info[i];
arch_info[i].target = target;
arch_info[i].armv7m_common = armv7m;
reg_list[i].name = armv7m_core_reg_list[i];
reg_list[i].size = 32;
reg_list[i].value = calloc(1, 4);
reg_list[i].dirty = 0;
reg_list[i].valid = 0;
reg_list[i].bitfield_desc = NULL;
reg_list[i].num_bitfields = 0;
reg_list[i].arch_type = armv7m_core_reg_arch_type;
reg_list[i].arch_info = &arch_info[i];
}
/* Build the debug context cache*/
cache = malloc(sizeof(reg_cache_t));
reg_list = malloc(sizeof(reg_t) * num_regs);
cache->name = "arm v7m debug registers";
cache->next = NULL;
cache->reg_list = reg_list;
cache->num_regs = num_regs;
armv7m->debug_context = cache;
armv7m->process_context->next = cache;
for (i = 0; i < num_regs; i++)
{
reg_list[i].name = armv7m_core_dbgreg_list[i];
reg_list[i].size = 32;
reg_list[i].value = calloc(1, 4);
reg_list[i].dirty = 0;
reg_list[i].valid = 0;
reg_list[i].bitfield_desc = NULL;
reg_list[i].num_bitfields = 0;
reg_list[i].arch_type = armv7m_core_reg_arch_type;
reg_list[i].arch_info = &arch_info[i];
}
return cache;
}
int armv7m_init_target(struct command_context_s *cmd_ctx, struct target_s *target)
{
armv7m_build_reg_cache(target);
return ERROR_OK;
}
int armv7m_init_arch_info(target_t *target, armv7m_common_t *armv7m)
{
/* register arch-specific functions */
target->arch_info = armv7m;
armv7m->core_state = ARMV7M_STATE_THUMB;
armv7m->read_core_reg = armv7m_read_core_reg;
armv7m->write_core_reg = armv7m_write_core_reg;
return ERROR_OK;
}
int armv7m_register_commands(struct command_context_s *cmd_ctx)
{
int retval;
return ERROR_OK;
}

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/***************************************************************************
* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* Copyright (C) 2006 by Magnus Lundin *
* lundin@mlu.mine.nu *
* *
* 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. *
***************************************************************************/
#ifndef ARMV7M_COMMON_H
#define ARMV7M_COMMON_H
#include "register.h"
#include "target.h"
#include "arm_jtag.h"
enum armv7m_mode
{
ARMV7M_MODE_HANDLER = 0,
ARMV7M_MODE_THREAD = 1,
ARMV7M_MODE_ANY = -1
};
extern char* armv7m_mode_strings[];
enum armv7m_state
{
ARMV7M_STATE_THUMB,
ARMV7M_STATE_DEBUG,
};
enum armv7m_regtype
{
ARMV7M_REGISTER_CORE_GP,
ARMV7M_REGISTER_CORE_SP,
ARMV7M_REGISTER_MEMMAP
};
enum armv7m_runcontext
{
ARMV7M_PROCESS_CONTEXT,
ARMV7M_DEBUG_CONTEXT
};
extern char* armv7m_state_strings[];
//#define ARMV7NUMCOREREGS 23
/* offsets into armv7m core register cache */
enum
{
ARMV7M_PC = 15,
ARMV7M_xPSR = 16,
ARMV7M_MSP ,
ARMV7M_PSP ,
ARMV7M_PRIMASK ,
ARMV7M_BASEPRI,
ARMV7M_FAULTMASK,
ARMV7M_CONTROL,
ARMV7NUMCOREREGS
};
#define ARMV7M_COMMON_MAGIC 0x2A452A45
typedef struct armv7m_common_s
{
int common_magic;
reg_cache_t *core_cache;
reg_cache_t *process_context;
reg_cache_t *debug_context;
enum armv7m_mode core_mode;
enum armv7m_state core_state;
int exception_number;
int (*full_context)(struct target_s *target);
/* Direct processor core register read and writes */
int (*load_core_reg_u32)(struct target_s *target, enum armv7m_regtype type, u32 num, u32 *value);
int (*store_core_reg_u32)(struct target_s *target, enum armv7m_regtype type, u32 num, u32 value);
/* register cache to processor synchronization */
int (*read_core_reg)(struct target_s *target, int num);
int (*write_core_reg)(struct target_s *target, int num);
/* get or set register through cache, return error if target is running and synchronisation is impossible */
int (*get_core_reg_32)(struct target_s *target, int num, u32* value);
int (*set_core_reg_32)(struct target_s *target, int num, u32 value);
arm_jtag_t jtag_info;
reg_cache_t *eice_cache;
reg_cache_t *etm_cache;
int (*examine_debug_reason)(target_t *target);
void (*change_to_arm)(target_t *target, u32 *r0, u32 *pc);
// void (*read_core_regs)(target_t *target, u32 mask, u32 *core_regs[16]);
// void (*read_core_regs_target_buffer)(target_t *target, u32 mask, void *buffer, int size);
// void (*write_core_regs)(target_t *target, u32 mask, u32 core_regs[16]);
/*
void (*write_xpsr_im8)(target_t *target, u8 xpsr_im, int rot, int spsr);
void (*load_word_regs)(target_t *target, u32 mask);
void (*load_hword_reg)(target_t *target, int num);
void (*load_byte_reg)(target_t *target, int num);
void (*store_word_regs)(target_t *target, u32 mask);
void (*store_hword_reg)(target_t *target, int num);
void (*store_byte_reg)(target_t *target, int num);
void (*write_pc)(target_t *target, u32 pc);
void (*branch_resume)(target_t *target);
*/
void (*pre_debug_entry)(target_t *target);
void (*post_debug_entry)(target_t *target);
void (*pre_restore_context)(target_t *target);
void (*post_restore_context)(target_t *target);
void *arch_info;
} armv7m_common_t;
typedef struct armv7m_algorithm_s
{
int common_magic;
enum armv7m_mode core_mode;
enum armv7m_state core_state;
} armv7m_algorithm_t;
typedef struct armv7m_core_reg_s
{
u32 num;
enum armv7m_regtype type;
enum armv7m_mode mode;
target_t *target;
armv7m_common_t *armv7m_common;
} armv7m_core_reg_t;
extern reg_cache_t *armv7m_build_reg_cache(target_t *target);
extern enum armv7m_mode armv7m_number_to_mode(int number);
extern int armv7m_mode_to_number(enum armv7m_mode mode);
extern int armv7m_arch_state(struct target_s *target, char *buf, int buf_size);
extern int armv7m_get_gdb_reg_list(target_t *target, reg_t **reg_list[], int *reg_list_size);
extern int armv7m_invalidate_core_regs(target_t *target);
extern int armv7m_register_commands(struct command_context_s *cmd_ctx);
extern int armv7m_init_arch_info(target_t *target, armv7m_common_t *armv7m);
extern int armv7m_run_algorithm(struct target_s *target, int num_mem_params, mem_param_t *mem_params, int num_reg_params, reg_param_t *reg_params, u32 entry_point, u32 exit_point, int timeout_ms, void *arch_info);
extern int armv7m_invalidate_core_regs(target_t *target);
/* Thumb mode instructions
*/
/* Move to Register from Special Register (Thumb mode) 32 bit Thumb2 instruction
* Rd: destination register
* SYSm: source special register
*/
#define ARMV7M_T_MRS(Rd, SYSm) ((0xF3EF) | ((0x8000 | (Rd<<8) | SYSm) << 16))
/* Move from Register from Special Register (Thumb mode) 32 bit Thumb2 instruction
* Rd: source register
* SYSm: destination special register
*/
#define ARMV7M_T_MSR(SYSm, Rn) ((0xF380 | ( Rn<<8 )) | ((0x8800 | SYSm) << 16))
/* Change Processor State. The instruction modifies the PRIMASK and FAULTMASK
* special-purpose register values (Thumb mode) 16 bit Thumb2 instruction
* Rd: source register
* IF:
*/
#define I_FLAG 2
#define F_FLAG 1
#define ARMV7M_T_CPSID(IF) ((0xB660 | (1<<8) | (IF&0x3)) | ((0xB660 | (1<<8) | (IF&0x3)) << 16))
#define ARMV7M_T_CPSIE(IF) ((0xB660 | (0<<8) | (IF&0x3)) | ((0xB660 | (0<<8) | (IF&0x3)) << 16))
/* Breakpoint (Thumb mode) v5 onwards
* Im: immediate value used by debugger
*/
#define ARMV7M_T_BKPT(Im) ((0xBE00 | Im ) | ((0xBE00 | Im ) << 16))
/* Store register (Thumb mode)
* Rd: source register
* Rn: base register
*/
#define ARMV7M_T_STR(Rd, Rn) ((0x6000 | Rd | (Rn << 3)) | ((0x6000 | Rd | (Rn << 3)) << 16))
/* Load register (Thumb state)
* Rd: destination register
* Rn: base register
*/
#define ARMV7M_T_LDR(Rd, Rn) ((0x6800 | (Rn << 3) | Rd) | ((0x6800 | (Rn << 3) | Rd) << 16))
/* Load multiple (Thumb state)
* Rn: base register
* List: for each bit in list: store register
*/
#define ARMV7M_T_LDMIA(Rn, List) ((0xc800 | (Rn << 8) | List) | ((0xc800 | (Rn << 8) | List) << 16))
/* Load register with PC relative addressing
* Rd: register to load
*/
#define ARMV7M_T_LDR_PCREL(Rd) ((0x4800 | (Rd << 8)) | ((0x4800 | (Rd << 8)) << 16))
/* Move hi register (Thumb mode)
* Rd: destination register
* Rm: source register
*/
#define ARMV7M_T_MOV(Rd, Rm) ((0x4600 | (Rd & 0x7) | ((Rd & 0x8) << 4) | ((Rm & 0x7) << 3) | ((Rm & 0x8) << 3)) | ((0x4600 | (Rd & 0x7) | ((Rd & 0x8) << 4) | ((Rm & 0x7) << 3) | ((Rm & 0x8) << 3)) << 16))
/* No operation (Thumb mode)
*/
#define ARMV7M_T_NOP (0x46c0 | (0x46c0 << 16))
/* Move immediate to register (Thumb state)
* Rd: destination register
* Im: 8-bit immediate value
*/
#define ARMV7M_T_MOV_IM(Rd, Im) ((0x2000 | (Rd << 8) | Im) | ((0x2000 | (Rd << 8) | Im) << 16))
/* Branch and Exchange
* Rm: register containing branch target
*/
#define ARMV7M_T_BX(Rm) ((0x4700 | (Rm << 3)) | ((0x4700 | (Rm << 3)) << 16))
/* Branch (Thumb state)
* Imm: Branch target
*/
#define ARMV7M_T_B(Imm) ((0xe000 | Imm) | ((0xe000 | Imm) << 16))
#endif /* ARMV7M_H */

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/***************************************************************************
* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* Copyright (C) 2006 by Magnus Lundin *
* lundin@mlu.mine.nu *
* *
* 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. *
***************************************************************************/
#ifndef CORTEX_M3_H
#define CORTEX_M3_H
#include "register.h"
#include "target.h"
#include "armv7m.h"
#include "cortex_swjdp.h"
extern char* cortex_m3_state_strings[];
#define CORTEX_M3_COMMON_MAGIC 0x1A451A45
#define SYSTEM_CONTROL_BASE 0x400FE000
#define CPUID 0xE000ED00
/* Debug Control Block */
#define DCB_DHCSR 0xE000EDF0
#define DCB_DCRSR 0xE000EDF4
#define DCB_DCRDR 0xE000EDF8
#define DCB_DEMCR 0xE000EDFC
#define DCRSR_WnR (1<<16)
#define DWT_CTRL 0xE0001000
#define DWT_COMP0 0xE0001020
#define DWT_MASK0 0xE0001024
#define DWT_FUNCTION0 0xE0001028
#define FP_CTRL 0xE0002000
#define FP_REMAP 0xE0002004
#define FP_COMP0 0xE0002008
#define FP_COMP1 0xE000200C
#define FP_COMP2 0xE0002010
#define FP_COMP3 0xE0002014
#define FP_COMP4 0xE0002018
#define FP_COMP5 0xE000201C
#define FP_COMP6 0xE0002020
#define FP_COMP7 0xE0002024
#define DWT_CTRL 0xE0001000
/* DCB_DHCSR bit and field definitions */
#define DBGKEY (0xA05F<<16)
#define C_DEBUGEN (1<<0)
#define C_HALT (1<<1)
#define C_STEP (1<<2)
#define C_MASKINTS (1<<3)
#define S_REGRDY (1<<16)
#define S_HALT (1<<17)
#define S_SLEEP (1<<18)
#define S_LOCKUP (1<<19)
#define S_RETIRE_ST (1<<24)
#define S_RESET_ST (1<<25)
/* DCB_DEMCR bit and field definitions */
#define TRCENA (1<<24)
#define VC_HARDERR (1<<10)
#define VC_BUSERR (1<<8)
#define VC_CORERESET (1<<0)
#define NVIC_ICTR 0xE000E004
#define NVIC_ISE0 0xE000E100
#define NVIC_ICSR 0xE000ED04
#define NVIC_AIRCR 0xE000ED0C
#define NVIC_SHCSR 0xE000ED24
#define NVIC_CFSR 0xE000ED28
#define NVIC_MMFSRb 0xE000ED28
#define NVIC_BFSRb 0xE000ED29
#define NVIC_USFSRh 0xE000ED2A
#define NVIC_HFSR 0xE000ED2C
#define NVIC_DFSR 0xE000ED30
#define NVIC_MMFAR 0xE000ED34
#define NVIC_BFAR 0xE000ED38
/* NVIC_AIRCR bits */
#define AIRCR_VECTKEY (0x5FA<<16)
#define AIRCR_SYSRESETREQ (1<<2)
#define AIRCR_VECTCLRACTIVE (1<<1)
#define AIRCR_VECTRESET (1<<0)
/* NVIC_SHCSR bits */
#define SHCSR_BUSFAULTENA (1<<17)
/* NVIC_DFSR bits */
#define DFSR_HALTED 1
#define DFSR_BKPT 2
#define DFSR_DWTTRAP 4
#define DFSR_VCATCH 8
#define FPCR_CODE 0
#define FPCR_LITERAL 1
#define FPCR_REPLACE_REMAP (0<<30)
#define FPCR_REPLACE_BKPT_LOW (1<<30)
#define FPCR_REPLACE_BKPT_HIGH (2<<30)
#define FPCR_REPLACE_BKPT_BOTH (3<<30)
typedef struct cortex_m3_fp_comparator_s
{
int used;
int type;
u32 fpcr_value;
u32 fpcr_address;
} cortex_m3_fp_comparator_t;
typedef struct cortex_m3_dwt_comparator_s
{
int used;
u32 comp;
u32 mask;
u32 function;
u32 dwt_comparator_address;
} cortex_m3_dwt_comparator_t;
typedef struct cortex_m3_common_s
{
int common_magic;
// int (*full_context)(struct target_s *target);
arm_jtag_t jtag_info;
/* Context information */
u32 dcb_dhcsr;
u32 nvic_dfsr; /* Debug Fault Status Register - shows reason for debug halt */
u32 nvic_icsr; /* Interrupt Control State Register - shows active and pending IRQ */
/* Flash Patch and Breakpoint */
int fp_num_lit;
int fp_num_code;
int fp_code_available;
int auto_bp_type;
cortex_m3_fp_comparator_t * fp_comparator_list;
/* DWT */
int dwt_num_comp;
int dwt_comp_available;
cortex_m3_dwt_comparator_t * dwt_comparator_list;
/* Interrupts */
int intlinesnum;
u32 * intsetenable;
/*
u32 arm_bkpt;
u16 thumb_bkpt;
int sw_bkpts_use_wp;
int wp_available;
int wp0_used;
int wp1_used;
int force_hw_bkpts;
int dbgreq_adjust_pc;
int use_dbgrq;
int has_etm;
int reinit_embeddedice;
struct working_area_s *dcc_working_area;
int fast_memory_access;
int dcc_downloads;
*/
/* breakpoint use map */
int sw_bkpts_enabled;
armv7m_common_t armv7m;
swjdp_common_t swjdp_info;
void *arch_info;
} cortex_m3_common_t;
extern void cortex_m3_build_reg_cache(target_t *target);
enum target_state cortex_m3_poll(target_t *target);
int cortex_m3_halt(target_t *target);
int cortex_m3_resume(struct target_s *target, int current, u32 address, int handle_breakpoints, int debug_execution);
int cortex_m3_step(struct target_s *target, int current, u32 address, int handle_breakpoints);
int cortex_m3_assert_reset(target_t *target);
int cortex_m3_deassert_reset(target_t *target);
int cortex_m3_soft_reset_halt(struct target_s *target);
int cortex_m3_read_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
int cortex_m3_write_memory(struct target_s *target, u32 address, u32 size, u32 count, u8 *buffer);
int cortex_m3_bulk_write_memory(target_t *target, u32 address, u32 count, u8 *buffer);
int cortex_m3_set_breakpoint(struct target_s *target, breakpoint_t *breakpoint);
int cortex_m3_unset_breakpoint(struct target_s *target, breakpoint_t *breakpoint);
int cortex_m3_add_breakpoint(struct target_s *target, breakpoint_t *breakpoint);
int cortex_m3_remove_breakpoint(struct target_s *target, breakpoint_t *breakpoint);
int cortex_m3_add_watchpoint(struct target_s *target, watchpoint_t *watchpoint);
int cortex_m3_remove_watchpoint(struct target_s *target, watchpoint_t *watchpoint);
extern int cortex_m3_register_commands(struct command_context_s *cmd_ctx);
extern int cortex_m3_init_arch_info(target_t *target, cortex_m3_common_t *cortex_m3, int chain_pos, char *variant);
#endif /* CORTEX_M3_H */

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/***************************************************************************
* Copyright (C) 2006 by Magnus Lundin *
* lundin@mlu.mine.nu *
* *
* 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. *
***************************************************************************/
/***************************************************************************
* *
* CoreSight (Light?) SerialWireJtagDebugPort *
* *
* CoreSight™ DAP-Lite TRM, ARM DDI 0316A *
* Cortex-M3™ TRM, ARM DDI 0337C *
* *
***************************************************************************/
#include "replacements.h"
#include "cortex_m3.h"
#include "cortex_swjdp.h"
#include "jtag.h"
#include "log.h"
#include <stdlib.h>
/*
Transaction Mode:
swjdp->trans_mode = TRANS_MODE_COMPOSITE;
Uses Overrun checking mode and does not do actual JTAG send/receive or transaction
result checking until swjdp_end_transaction()
This must be done before using or deallocating any return variables.
swjdp->trans_mode == TRANS_MODE_ATOMIC
All reads and writes to the AHB bus are checked for valid completion, and return values
are immediatley available.
*/
/***************************************************************************
* *
* DPACC and APACC scanchain access through JTAG-DR *
* *
***************************************************************************/
int swjdp_jtag_error_handler(u8 *in_value, void *priv)
{
char *caller = priv;
DEBUG("caller: %s", caller);
return ERROR_OK;
}
/* Scan out and in from target ordered u8 buffers */
int swjdp_scan(arm_jtag_t *jtag_info, u8 chain, u8 reg_addr, u8 RnW, u8 *outvalue, u8 *invalue, u8 *ack)
{
scan_field_t fields[2];
u8 out_addr_buf;
error_handler_t error_handler;
jtag_add_end_state(TAP_RTI);
error_handler.error_handler = swjdp_jtag_error_handler;
error_handler.error_handler_priv = "swjdp_scan";
arm_jtag_set_instr(jtag_info, chain, &error_handler);
fields[0].device = jtag_info->chain_pos;
fields[0].num_bits = 3;
buf_set_u32(&out_addr_buf, 0, 3, ((reg_addr>>1)&0x6) | (RnW&0x1));
fields[0].out_value = &out_addr_buf;
fields[0].out_mask = NULL;
fields[0].in_value = ack;
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;
fields[1].num_bits = 32;
fields[1].out_value = outvalue;
fields[1].out_mask = NULL;
fields[1].in_value = invalue;
fields[1].in_handler = NULL;
fields[1].in_handler_priv = NULL;
fields[1].in_check_value = NULL;
fields[1].in_check_mask = NULL;
jtag_add_dr_scan(2, fields, -1, NULL);
return ERROR_OK;
}
/* Scan out and in from host ordered u32 variables */
int swjdp_scan_u32(arm_jtag_t *jtag_info, u8 chain, u8 reg_addr, u8 RnW, u32 outvalue, u32 *invalue, u8 *ack)
{
scan_field_t fields[2];
u8 out_value_buf[4];
u8 out_addr_buf;
error_handler_t error_handler;
jtag_add_end_state(TAP_RTI);
error_handler.error_handler = swjdp_jtag_error_handler;
error_handler.error_handler_priv = "swjdp_scan_u32";
arm_jtag_set_instr(jtag_info, chain, &error_handler);
fields[0].device = jtag_info->chain_pos;
fields[0].num_bits = 3;
buf_set_u32(&out_addr_buf, 0, 3, ((reg_addr>>1)&0x6) | (RnW&0x1));
fields[0].out_value = &out_addr_buf;
fields[0].out_mask = NULL;
fields[0].in_value = ack;
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;
fields[1].num_bits = 32;
buf_set_u32(out_value_buf, 0, 32, outvalue);
fields[1].out_value = out_value_buf;
fields[1].out_mask = NULL;
fields[1].in_value = NULL;
if (invalue)
{
fields[1].in_handler = arm_jtag_buf_to_u32;
fields[1].in_handler_priv = invalue;
}
else
{
fields[1].in_handler = NULL;
fields[1].in_handler_priv = NULL;
}
fields[1].in_check_value = NULL;
fields[1].in_check_mask = NULL;
jtag_add_dr_scan(2, fields, -1, NULL);
return ERROR_OK;
}
/* scan_inout_check adds one extra inscan for DPAP_READ commands to read variables */
int scan_inout_check(swjdp_common_t *swjdp, u8 chain, u8 reg_addr, u8 RnW, u8 *outvalue, u8 *invalue)
{
swjdp_scan(swjdp->jtag_info, chain, reg_addr, RnW, outvalue, NULL, NULL);
if ((RnW==DPAP_READ) && (invalue != NULL))
{
swjdp_scan(swjdp->jtag_info, SWJDP_IR_DPACC, 0xC, DPAP_READ, 0, invalue, &swjdp->ack);
}
/* In TRANS_MODE_ATOMIC all SWJDP_IR_APACC transactions wait for ack=OK/FAULT and the check CTRL_STAT */
if ((chain == SWJDP_IR_APACC)&&(swjdp->trans_mode == TRANS_MODE_ATOMIC))
{
return swjdp_transaction_endcheck(swjdp);
}
return ERROR_OK;
}
int scan_inout_check_u32(swjdp_common_t *swjdp, u8 chain, u8 reg_addr, u8 RnW, u32 outvalue, u32 *invalue)
{
swjdp_scan_u32(swjdp->jtag_info, chain, reg_addr, RnW, outvalue, NULL, NULL);
if ((RnW==DPAP_READ) && (invalue != NULL))
{
swjdp_scan_u32(swjdp->jtag_info, SWJDP_IR_DPACC, 0xC, DPAP_READ, 0, invalue, &swjdp->ack);
}
/* In TRANS_MODE_ATOMIC all SWJDP_IR_APACC transactions wait for ack=OK/FAULT and the check CTRL_STAT */
if ((chain == SWJDP_IR_APACC)&&(swjdp->trans_mode == TRANS_MODE_ATOMIC))
{
return swjdp_transaction_endcheck(swjdp);
}
return ERROR_OK;
}
int swjdp_transaction_endcheck(swjdp_common_t *swjdp)
{
int waitcount = 0;
u32 ctrlstat;
u8 ack=0;
scan_inout_check_u32(swjdp, SWJDP_IR_DPACC, DP_CTRL_STAT, DPAP_READ, 0, &ctrlstat);
jtag_execute_queue();
swjdp->ack = swjdp->ack&0x7;
while (swjdp->ack != 2)
{
if (swjdp->ack==1)
{
waitcount++;
if (waitcount>100)
{
WARNING("Timeout waiting for ACK = OK/FAULT in SWJDP transaction");
return ERROR_JTAG_DEVICE_ERROR;
}
}
else
{
WARNING("Invalid ACK in SWJDP transaction");
return ERROR_JTAG_DEVICE_ERROR;
}
scan_inout_check_u32(swjdp, SWJDP_IR_DPACC, DP_CTRL_STAT, DPAP_READ, 0, &ctrlstat);
jtag_execute_queue();
swjdp->ack = swjdp->ack&0x7;
}
/* Check for STICKYERR and STICKYORUN */
if (ctrlstat & (SSTICKYORUN|SSTICKYERR))
{
DEBUG(" swjdp: CTRL/STAT error 0x%x",ctrlstat);
/* Check power to debug regions */
if ((ctrlstat&0xf0000000)!=0xf0000000)
{
ahbap_debugport_init(swjdp);
}
else
{
u32 dcb_dhcsr,nvic_shcsr, nvic_bfar, nvic_cfsr;
if (ctrlstat&SSTICKYORUN) ERROR("SWJ-DP OVERRUN - check clock or reduce jtag speed");
if (ctrlstat&SSTICKYERR) ERROR("SWJ-DP STICKY ERROR");
/* Clear Sticky Error Bits */
scan_inout_check_u32(swjdp, SWJDP_IR_DPACC, DP_CTRL_STAT, DPAP_WRITE, swjdp->dp_ctrl_stat|SSTICKYORUN|SSTICKYERR, NULL);
scan_inout_check_u32(swjdp, SWJDP_IR_DPACC, DP_CTRL_STAT, DPAP_READ, 0, &ctrlstat);
jtag_execute_queue();
/* Can we find out the reason for the error ?? */
ahbap_read_system_atomic_u32(swjdp, DCB_DHCSR, &dcb_dhcsr);
ahbap_read_system_atomic_u32(swjdp, NVIC_SHCSR, &nvic_shcsr);
ahbap_read_system_atomic_u32(swjdp, NVIC_CFSR, &nvic_cfsr);
ahbap_read_system_atomic_u32(swjdp, NVIC_BFAR, &nvic_bfar);
//DEBUG("dcb_dhcsr %x, nvic_shcsr %x, nvic_cfsr %x, nvic_bfar %x",dcb_dhcsr,nvic_shcsr,nvic_cfsr,nvic_bfar);
ERROR("dcb_dhcsr %x, nvic_shcsr %x, nvic_cfsr %x, nvic_bfar %x",dcb_dhcsr,nvic_shcsr,nvic_cfsr,nvic_bfar);
}
jtag_execute_queue();
return ERROR_JTAG_DEVICE_ERROR;
}
return ERROR_OK;
}
/***************************************************************************
* *
* DP and AHB-AP register access through APACC and DPACC *
* *
***************************************************************************/
int swjdp_write_dpacc(swjdp_common_t *swjdp, u32 value, u8 reg_addr)
{
u8 out_value_buf[4];
buf_set_u32(out_value_buf, 0, 32, value);
return scan_inout_check(swjdp, SWJDP_IR_DPACC, reg_addr, DPAP_WRITE, out_value_buf, NULL);
}
int swjdp_read_dpacc(swjdp_common_t *swjdp, u32 *value, u8 reg_addr)
{
scan_inout_check_u32(swjdp, SWJDP_IR_DPACC, reg_addr, DPAP_READ, 0, value);
return ERROR_OK;
}
int swjdp_bankselect_apacc(swjdp_common_t *swjdp,u32 reg_addr)
{
u32 select;
select = (reg_addr&0xFF0000F0);
if ( select != swjdp->dp_select_value )
{
swjdp_write_dpacc(swjdp, select, DP_SELECT);
swjdp->dp_select_value = select;
}
return ERROR_OK;
}
int ahbap_write_reg(swjdp_common_t *swjdp, u32 reg_addr, u8* out_value_buf)
{
swjdp_bankselect_apacc(swjdp, reg_addr);
scan_inout_check(swjdp, SWJDP_IR_APACC, reg_addr, DPAP_WRITE, out_value_buf, NULL);
return ERROR_OK;
}
int ahbap_read_reg(swjdp_common_t *swjdp, u32 reg_addr, u8 *in_value_buf)
{
swjdp_bankselect_apacc(swjdp, reg_addr);
scan_inout_check(swjdp, SWJDP_IR_APACC, reg_addr, DPAP_READ, 0, in_value_buf);
return ERROR_OK;
}
int ahbap_write_reg_u32(swjdp_common_t *swjdp, u32 reg_addr, u32 value)
{
u8 out_value_buf[4];
buf_set_u32(out_value_buf, 0, 32, value);
swjdp_bankselect_apacc(swjdp, reg_addr);
scan_inout_check(swjdp, SWJDP_IR_APACC, reg_addr, DPAP_WRITE, out_value_buf, NULL);
return ERROR_OK;
}
int ahbap_read_reg_u32(swjdp_common_t *swjdp, u32 reg_addr, u32 *value)
{
swjdp_bankselect_apacc(swjdp, reg_addr);
scan_inout_check_u32(swjdp, SWJDP_IR_APACC, reg_addr, DPAP_READ, 0, value);
return ERROR_OK;
}
/***************************************************************************
* *
* AHB-AP access to memory and system registers on AHB bus *
* *
***************************************************************************/
int ahbap_setup_accessport(swjdp_common_t *swjdp, u32 csw, u32 tar)
{
csw = csw | CSW_DBGSWENABLE | CSW_MASTER_DEBUG | CSW_HPROT;
if ( csw != swjdp->ap_csw_value )
{
//DEBUG("swjdp : Set CSW %x",csw);
ahbap_write_reg_u32(swjdp, AHBAP_CSW, csw );
swjdp->ap_csw_value = csw;
}
if ( tar != swjdp->ap_tar_value )
{
//DEBUG("swjdp : Set TAR %x",tar);
ahbap_write_reg_u32(swjdp, AHBAP_TAR, tar );
swjdp->ap_tar_value = tar;
}
if (csw & CSW_ADDRINC_MASK)
{
/* Do not cache TAR value when autoincrementing */
swjdp->ap_tar_value = -1;
}
return ERROR_OK;
}
/*****************************************************************************
* *
* ahbap_read_system_u32(swjdp_common_t *swjdp, u32 address, u32 *value) *
* *
* Read a u32 value from memory or system register *
* Functionally equivalent to target_read_u32(target, address, u32 *value), *
* but with less overhead *
*****************************************************************************/
int ahbap_read_system_u32(swjdp_common_t *swjdp, u32 address, u32 *value)
{
swjdp->trans_mode = TRANS_MODE_COMPOSITE;
ahbap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, address&0xFFFFFFF0);
ahbap_read_reg_u32(swjdp, AHBAP_BD0|address&0xC, value );
return ERROR_OK;
}
int ahbap_read_system_atomic_u32(swjdp_common_t *swjdp, u32 address, u32 *value)
{
ahbap_read_system_u32(swjdp, address, value);
return swjdp_transaction_endcheck(swjdp);
}
/*****************************************************************************
* *
* ahbap_write_system_u32(swjdp_common_t *swjdp, u32 address, u32 value) *
* *
* Write a u32 value to memory or system register *
* *
*****************************************************************************/
int ahbap_write_system_u32(swjdp_common_t *swjdp, u32 address, u32 value)
{
swjdp->trans_mode = TRANS_MODE_COMPOSITE;
ahbap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, address&0xFFFFFFF0);
ahbap_write_reg_u32(swjdp, AHBAP_BD0|address&0xC, value );
return ERROR_OK;
}
int ahbap_write_system_atomic_u32(swjdp_common_t *swjdp, u32 address, u32 value)
{
ahbap_write_system_u32(swjdp, address, value);
return swjdp_transaction_endcheck(swjdp);
}
/*****************************************************************************
* *
* ahbap_write_buf(swjdp_common_t *swjdp, u8 *buffer, int count, u32 address) *
* *
* Write a buffer in target order (little endian) *
* *
*****************************************************************************/
int ahbap_write_buf(swjdp_common_t *swjdp, u8 *buffer, int count, u32 address)
{
u32 outvalue;
int wcount, blocksize, writecount, errorcount=0, retval=ERROR_OK;
swjdp->trans_mode = TRANS_MODE_COMPOSITE;
while ( (address&0x3)&&(count>0) )
{
ahbap_setup_accessport(swjdp, CSW_8BIT | CSW_ADDRINC_SINGLE, address);
outvalue = (*buffer++)<<8*(address&0x3) ;
ahbap_write_reg_u32(swjdp, AHBAP_DRW, outvalue );
swjdp_transaction_endcheck(swjdp);
count--;
address++;
}
wcount = count>>2;
count = count-4*wcount;
while (wcount>0)
{
/* Adjust to read within 4K block boundaries */
blocksize = (0x1000-(0xFFF&address))>>2;
if (wcount<blocksize)
blocksize = wcount;
ahbap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_SINGLE, address);
for (writecount=0; writecount<blocksize; writecount++)
{
ahbap_write_reg(swjdp, AHBAP_DRW, buffer+4*writecount );
}
if (swjdp_transaction_endcheck(swjdp)==ERROR_OK)
{
wcount = wcount-blocksize;
address = address+4*blocksize;
buffer = buffer + 4*blocksize;
}
else
{
errorcount++;
}
if (errorcount>1)
{
WARNING("Block read error address %x, count %x", address, count);
return ERROR_JTAG_DEVICE_ERROR;
}
}
while (count>0)
{
ahbap_setup_accessport(swjdp, CSW_8BIT | CSW_ADDRINC_SINGLE, address);
outvalue = (*buffer++)<<8*(address&0x3) ;
ahbap_write_reg_u32(swjdp, AHBAP_DRW, outvalue );
retval = swjdp_transaction_endcheck(swjdp);
count--;
address++;
}
return retval;
}
/*****************************************************************************
* *
* ahbap_read_buf(swjdp_common_t *swjdp, u8 *buffer, int count, u32 address) *
* *
* Read block fast in target order (little endian) into a buffer *
* *
*****************************************************************************/
int ahbap_read_buf(swjdp_common_t *swjdp, u8 *buffer, int count, u32 address)
{
u32 invalue;
int wcount, blocksize, readcount, errorcount=0, retval=ERROR_OK;
swjdp->trans_mode = TRANS_MODE_COMPOSITE;
while ( (address&0x3)&&(count>0) )
{
ahbap_setup_accessport(swjdp, CSW_8BIT | CSW_ADDRINC_SINGLE, address);
ahbap_read_reg_u32(swjdp, AHBAP_DRW, &invalue );
swjdp_transaction_endcheck(swjdp);
*buffer++ = (invalue>>8*(address&0x3))&0xFF;
count--;
address++;
}
wcount = count>>2;
count = count-4*wcount;
while (wcount>0)
{
/* Adjust to read within 4K block boundaries */
blocksize = (0x1000-(0xFFF&address))>>2;
if (wcount<blocksize)
blocksize = wcount;
ahbap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_SINGLE, address);
/* Scan out first read */
swjdp_scan(swjdp->jtag_info, SWJDP_IR_APACC, AHBAP_DRW, DPAP_READ, 0, NULL, NULL);
for (readcount=0; readcount<blocksize-1; readcount++)
{
/* Scan out read instruction and scan in previous value */
swjdp_scan(swjdp->jtag_info, SWJDP_IR_APACC, AHBAP_DRW, DPAP_READ, 0, buffer+4*readcount, &swjdp->ack);
}
/* Scan in last value */
swjdp_scan(swjdp->jtag_info, SWJDP_IR_DPACC, 0xC, DPAP_READ, 0, buffer+4*readcount, &swjdp->ack);
if (swjdp_transaction_endcheck(swjdp)==ERROR_OK)
{
wcount = wcount-blocksize;
address += 4*blocksize;
buffer += 4*blocksize;
}
else
{
errorcount++;
}
if (errorcount>1)
{
WARNING("Block read error address %x, count %x", address, count);
return ERROR_JTAG_DEVICE_ERROR;
}
}
while (count>0)
{
ahbap_setup_accessport(swjdp, CSW_8BIT | CSW_ADDRINC_SINGLE, address);
ahbap_read_reg_u32(swjdp, AHBAP_DRW, &invalue );
retval = swjdp_transaction_endcheck(swjdp);
*buffer++ = (invalue>>8*(address&0x3))&0xFF;
count--;
address++;
}
return retval;
}
int ahbap_block_read_u32(swjdp_common_t *swjdp, u32 *buffer, int count, u32 address)
{
int readcount, errorcount=0;
u32 blockmax, blocksize;
swjdp->trans_mode = TRANS_MODE_COMPOSITE;
while (count>0)
{
/* Adjust to read within 4K block boundaries */
blocksize = (0x1000-(0xFFF&address))>>2;
if (count<blocksize)
blocksize = count;
ahbap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_SINGLE, address);
for (readcount=0; readcount<blocksize; readcount++)
{
ahbap_read_reg_u32(swjdp, AHBAP_DRW, buffer+readcount );
}
if (swjdp_transaction_endcheck(swjdp)==ERROR_OK)
{
count = count-blocksize;
address = address+4*blocksize;
buffer = buffer + blocksize;
}
else
{
errorcount++;
}
if (errorcount>1)
{
WARNING("Block read error address %x, count %x", address, count);
return ERROR_JTAG_DEVICE_ERROR;
}
}
return ERROR_OK;
}
int ahbap_read_coreregister_u32(swjdp_common_t *swjdp, u32 *value, int regnum)
{
swjdp->trans_mode = TRANS_MODE_COMPOSITE;
/* ahbap_write_system_u32(swjdp, DCB_DCRSR, regnum); */
ahbap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, DCB_DCRSR&0xFFFFFFF0);
ahbap_write_reg_u32(swjdp, AHBAP_BD0|DCB_DCRSR&0xC, regnum );
/* ahbap_read_system_u32(swjdp, DCB_DCRDR, value); */
ahbap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, DCB_DCRDR&0xFFFFFFF0);
ahbap_read_reg_u32(swjdp, AHBAP_BD0|DCB_DCRDR&0xC, value );
return swjdp_transaction_endcheck(swjdp);
}
int ahbap_write_coreregister_u32(swjdp_common_t *swjdp, u32 value, int regnum)
{
swjdp->trans_mode = TRANS_MODE_COMPOSITE;
/* ahbap_write_system_u32(swjdp, DCB_DCRDR, core_regs[i]); */
ahbap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, DCB_DCRDR&0xFFFFFFF0);
ahbap_write_reg_u32(swjdp, AHBAP_BD0|DCB_DCRDR&0xC, value );
/* ahbap_write_system_u32(swjdp, DCB_DCRSR, i | DCRSR_WnR ); */
ahbap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, DCB_DCRSR&0xFFFFFFF0);
ahbap_write_reg_u32(swjdp, AHBAP_BD0|DCB_DCRSR&0xC, regnum | DCRSR_WnR );
return swjdp_transaction_endcheck(swjdp);
}
int ahbap_debugport_init(swjdp_common_t *swjdp)
{
u32 idreg, romaddr, dummy;
u32 ctrlstat;
int cnt=0;
DEBUG("");
swjdp->ap_csw_value = -1;
swjdp->ap_tar_value = -1;
swjdp->trans_mode = TRANS_MODE_ATOMIC;
swjdp_read_dpacc(swjdp, &dummy, DP_CTRL_STAT);
swjdp_write_dpacc(swjdp, SSTICKYERR, DP_CTRL_STAT);
swjdp_read_dpacc(swjdp, &dummy, DP_CTRL_STAT);
swjdp->dp_ctrl_stat = CDBGPWRUPREQ|CSYSPWRUPREQ;
swjdp_write_dpacc(swjdp, swjdp->dp_ctrl_stat, DP_CTRL_STAT);
swjdp_read_dpacc(swjdp, &ctrlstat, DP_CTRL_STAT);
jtag_execute_queue();
/* Check that we have debug power domains activated */
while (!(ctrlstat & CDBGPWRUPACK) && (cnt++<10))
{
DEBUG(" swjdp: wait CDBGPWRUPACK");
swjdp_read_dpacc(swjdp, &ctrlstat, DP_CTRL_STAT);
jtag_execute_queue();
usleep(10000);
}
while (!(ctrlstat & CSYSPWRUPACK) && (cnt++<10))
{
DEBUG(" swjdp: wait CSYSPWRUPACK");
swjdp_read_dpacc(swjdp, &ctrlstat, DP_CTRL_STAT);
jtag_execute_queue();
usleep(10000);
}
swjdp_read_dpacc(swjdp, &dummy, DP_CTRL_STAT);
/* With debug power on we can activate OVERRUN checking */
swjdp->dp_ctrl_stat = CDBGPWRUPREQ|CSYSPWRUPREQ|CORUNDETECT;
swjdp_write_dpacc(swjdp, swjdp->dp_ctrl_stat , DP_CTRL_STAT);
swjdp_read_dpacc(swjdp, &dummy, DP_CTRL_STAT);
ahbap_read_reg_u32(swjdp, 0xFC, &idreg );
ahbap_read_reg_u32(swjdp, 0xF8, &romaddr );
DEBUG("AHB-AP ID Register 0x%x, Debug ROM Address 0x%x",idreg,romaddr);
return ERROR_OK;
}

130
src/target/cortex_swjdp.h Normal file
View File

@ -0,0 +1,130 @@
/***************************************************************************
* Copyright (C) 2006 by Magnus Lundin *
* lundin@mlu.mine.nu *
* *
* 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. *
***************************************************************************/
#ifndef CORTEX_SWJDP_H
#define CORTEX_SWJDP_H
#include "target.h"
#include "register.h"
#include "arm_jtag.h"
#define SWJDP_IR_DPACC 0xA
#define SWJDP_IR_APACC 0xB
#define DPAP_WRITE 0
#define DPAP_READ 1
#define DP_ZERO 0
#define DP_CTRL_STAT 0x4
#define DP_SELECT 0x8
#define DP_RDBUFF 0xC
#define CORUNDETECT (1<<0)
#define SSTICKYORUN (1<<1)
#define SSTICKYERR (1<<5)
#define CDBGRSTREQ (1<<26)
#define CDBGRSTACK (1<<27)
#define CDBGPWRUPREQ (1<<28)
#define CDBGPWRUPACK (1<<29)
#define CSYSPWRUPREQ (1<<30)
#define CSYSPWRUPACK (1<<31)
#define AHBAP_CSW 0x00
#define AHBAP_TAR 0x04
#define AHBAP_DRW 0x0C
#define AHBAP_BD0 0x10
#define AHBAP_BD1 0x14
#define AHBAP_BD2 0x18
#define AHBAP_BD3 0x1C
#define AHBAP_DBGROMA 0xF8
#define AHBAP_IDR 0xFC
#define CSW_8BIT 0
#define CSW_16BIT 1
#define CSW_32BIT 2
#define CSW_ADDRINC_MASK (3<<4)
#define CSW_ADDRINC_OFF 0
#define CSW_ADDRINC_SINGLE (1<<4)
#define CSW_ADDRINC_PACKED (2<<4)
#define CSW_HPROT (1<<25)
#define CSW_MASTER_DEBUG (1<<29)
#define CSW_DBGSWENABLE (1<<31)
#define TRANS_MODE_NONE 0
/* Transaction waits for previous to complete */
#define TRANS_MODE_ATOMIC 1
/* Freerunning transactions with delays and overrun checking */
#define TRANS_MODE_COMPOSITE 2
typedef struct swjdp_reg_s
{
int addr;
arm_jtag_t *jtag_info;
} swjdp_reg_t;
typedef struct swjdp_common_s
{
arm_jtag_t *jtag_info;
/* Control config */
u32 dp_ctrl_stat;
/* Register select cache */
u32 dp_select_value;
u32 ap_csw_value;
u32 ap_tar_value;
u8 prev_ack;
/* information about current pending SWjDP-AHBAP transaction */
u8 trans_mode;
u8 trans_rw;
u8 ack;
u32 * trans_value;
} swjdp_common_t;
/* Internal functions used in the module, partial transactions, use with caution */
extern int swjdp_write_dpacc(swjdp_common_t *swjdp, u32 value, u8 reg_addr);
//extern int swjdp_write_apacc(swjdp_common_t *swjdp, u32 value, u8 reg_addr);
extern int swjdp_read_dpacc(swjdp_common_t *swjdp, u32 *value, u8 reg_addr);
//extern int swjdp_read_apacc(swjdp_common_t *swjdp, u32 *value, u8 reg_addr);
extern int ahbap_write_reg(swjdp_common_t *swjdp, u32 reg_addr, u8* out_value_buf);
extern int ahbap_read_reg(swjdp_common_t *swjdp, u32 reg_addr, u8 *in_value_buf);
/* External interface, partial operations must be completed with swjdp_transaction_endcheck() */
extern int ahbap_read_system_u32(swjdp_common_t *swjdp, u32 address, u32 *value);
extern int ahbap_write_system_u32(swjdp_common_t *swjdp, u32 address, u32 value);
extern int swjdp_transaction_endcheck(swjdp_common_t *swjdp);
/* External interface, complete atomic operations */
/* Host endian word transfer of single memory and system registers */
extern int ahbap_read_system_atomic_u32(swjdp_common_t *swjdp, u32 address, u32 *value);
extern int ahbap_write_system_atomic_u32(swjdp_common_t *swjdp, u32 address, u32 value);
/* Target endian (u8*) buffer transfers of blocks of memory and system registers */
extern int ahbap_read_block(swjdp_common_t *swjdp, u8 *buffer, int bytecount, u32 address);
extern int ahbap_write_block(swjdp_common_t *swjdp, u8 *buffer, int bytecount, u32 address);
/* Host endian word transfers of processor core registers */
extern int ahbap_read_coreregister_u32(swjdp_common_t *swjdp, u32 *value, int regnum);
extern int ahbap_write_coreregister_u32(swjdp_common_t *swjdp, u32 value, int regnum);
/* Initialisation of the debug system, power domains and registers */
extern int ahbap_debugport_init(swjdp_common_t *swjdp);
#endif

2
src/target/target.c
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@ -81,6 +81,7 @@ extern target_type_t arm920t_target;
extern target_type_t arm966e_target;
extern target_type_t arm926ejs_target;
extern target_type_t xscale_target;
extern target_type_t cortexm3_target;
target_type_t *target_types[] =
{
@ -91,6 +92,7 @@ target_type_t *target_types[] =
&arm966e_target,
&arm926ejs_target,
&xscale_target,
&cortexm3_target,
NULL,
};