* Copyright (C) 2008 by Spencer Oliver *
* spen@spen-soft.co.uk *
* *
- * Copyright (C) 2007,2008 Øyvind Harboe *
+ * Copyright (C) 2007,2008 Øyvind Harboe *
* oyvind.harboe@zylin.com *
* *
* This program is free software; you can redistribute it and/or modify *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
+ * *
+ * ARMv7-M Architecture, Application Level Reference Manual *
+ * ARM DDI 0405C (September 2008) *
+ * *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
char* armv7m_exception_strings[] =
{
- "", "Reset", "NMI", "HardFault", "MemManage", "BusFault", "UsageFault", "RESERVED", "RESERVED", "RESERVED", "RESERVED",
- "SVCall", "DebugMonitor", "RESERVED", "PendSV", "SysTick"
+ "", "Reset", "NMI", "HardFault",
+ "MemManage", "BusFault", "UsageFault", "RESERVED",
+ "RESERVED", "RESERVED", "RESERVED", "SVCall",
+ "DebugMonitor", "RESERVED", "PendSV", "SysTick"
};
char* armv7m_core_reg_list[] =
"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12",
"sp", "lr", "pc",
"xPSR", "msp", "psp",
- /* Registers accessed through special reg 20 */
- "primask", "basepri", "faultmask", "control"
+ /* reg 20 has 4 bytes: CONTROL, FAULTMASK, BASEPRI, PRIMASK */
+ "spec20",
};
uint8_t armv7m_gdb_dummy_fp_value[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
{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 coreregister 20 */
- {19, ARMV7M_REGISTER_CORE_SP, ARMV7M_MODE_ANY, NULL, NULL}, /* PRIMASK */
- {20, ARMV7M_REGISTER_CORE_SP, ARMV7M_MODE_ANY, NULL, NULL}, /* BASEPRI */
- {21, ARMV7M_REGISTER_CORE_SP, ARMV7M_MODE_ANY, NULL, NULL}, /* FAULTMASK */
- {22, ARMV7M_REGISTER_CORE_SP, ARMV7M_MODE_ANY, NULL, NULL} /* CONTROL */
+ /* FIXME the register numbers here are core-specific.
+ * Numbers 0..18 above work for all Cortex-M3 revisions.
+ * Number 20 below works for CM3 r2p0 and later.
+ */
+ {20, ARMV7M_REGISTER_CORE_SP, ARMV7M_MODE_ANY, NULL, NULL},
};
int armv7m_core_reg_arch_type = -1;
{
armv7m_core_reg_t *armv7m_reg = reg->arch_info;
target_t *target = armv7m_reg->target;
- u32 value = buf_get_u32(buf, 0, 32);
+ uint32_t value = buf_get_u32(buf, 0, 32);
if (target->state != TARGET_HALTED)
{
int armv7m_read_core_reg(struct target_s *target, int num)
{
- u32 reg_value;
+ uint32_t reg_value;
int retval;
armv7m_core_reg_t * armv7m_core_reg;
int armv7m_write_core_reg(struct target_s *target, int num)
{
int retval;
- u32 reg_value;
+ uint32_t reg_value;
armv7m_core_reg_t *armv7m_core_reg;
/* get pointers to arch-specific information */
armv7m->core_cache->reg_list[num].dirty = armv7m->core_cache->reg_list[num].valid;
return ERROR_JTAG_DEVICE_ERROR;
}
- LOG_DEBUG("write core reg %i value 0x%x", num , reg_value);
+ LOG_DEBUG("write core reg %i value 0x%" PRIx32 "", num , reg_value);
armv7m->core_cache->reg_list[num].valid = 1;
armv7m->core_cache->reg_list[num].dirty = 0;
}
/* run to exit point. return error if exit point was not reached. */
-static int armv7m_run_and_wait(struct target_s *target, u32 entry_point, int timeout_ms, u32 exit_point, armv7m_common_t *armv7m)
+static int armv7m_run_and_wait(struct target_s *target, uint32_t entry_point, int timeout_ms, uint32_t exit_point, armv7m_common_t *armv7m)
{
- u32 pc;
+ uint32_t pc;
int retval;
/* 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 */
- if((retval = target_resume(target, 0, entry_point, 1, 1)) != ERROR_OK)
+ if ((retval = target_resume(target, 0, entry_point, 1, 1)) != ERROR_OK)
{
return retval;
}
/* If the target fails to halt due to the breakpoint, force a halt */
if (retval != ERROR_OK || target->state != TARGET_HALTED)
{
- if ((retval=target_halt(target))!=ERROR_OK)
+ if ((retval = target_halt(target)) != ERROR_OK)
return retval;
- if ((retval=target_wait_state(target, TARGET_HALTED, 500))!=ERROR_OK)
+ if ((retval = target_wait_state(target, TARGET_HALTED, 500)) != ERROR_OK)
{
return retval;
}
armv7m->load_core_reg_u32(target, ARMV7M_REGISTER_CORE_GP, 15, &pc);
if (pc != exit_point)
{
- LOG_DEBUG("failed algoritm halted at 0x%x ", pc);
+ LOG_DEBUG("failed algoritm halted at 0x%" PRIx32 " ", pc);
return ERROR_TARGET_TIMEOUT;
}
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)
+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, uint32_t entry_point, uint32_t exit_point, int timeout_ms, void *arch_info)
{
/* get pointers to arch-specific information */
armv7m_common_t *armv7m = target->arch_info;
enum armv7m_mode core_mode = armv7m->core_mode;
int retval = ERROR_OK;
int i;
- u32 context[ARMV7NUMCOREREGS];
+ uint32_t context[ARMV7NUMCOREREGS];
if (armv7m_algorithm_info->common_magic != ARMV7M_COMMON_MAGIC)
{
for (i = 0; i < num_mem_params; i++)
{
- if ((retval=target_write_buffer(target, mem_params[i].address, mem_params[i].size, mem_params[i].value))!=ERROR_OK)
+ if ((retval = target_write_buffer(target, mem_params[i].address, mem_params[i].size, mem_params[i].value)) != ERROR_OK)
return retval;
}
for (i = 0; i < num_reg_params; i++)
{
reg_t *reg = register_get_by_name(armv7m->core_cache, reg_params[i].reg_name, 0);
-// u32 regvalue;
+// uint32_t regvalue;
if (!reg)
{
armv7m_set_core_reg(reg, reg_params[i].value);
}
- if (armv7m_algorithm_info->core_mode != ARMV7M_MODE_ANY)
+ /* NOTE: CONTROL is bits 31:24 of SPEC20 register, if it's present;
+ * holding a two-bit field.
+ *
+ * FIXME need a solution using ARMV7M_T_MSR(). Use it at least for
+ * earlier cores.
+ */
+ if (armv7m_algorithm_info->core_mode != ARMV7M_MODE_ANY
+ && armv7m->has_spec20)
{
LOG_DEBUG("setting core_mode: 0x%2.2x", armv7m_algorithm_info->core_mode);
- buf_set_u32(armv7m->core_cache->reg_list[ARMV7M_CONTROL].value, 0, 1, armv7m_algorithm_info->core_mode);
- armv7m->core_cache->reg_list[ARMV7M_CONTROL].dirty = 1;
- armv7m->core_cache->reg_list[ARMV7M_CONTROL].valid = 1;
+
+ buf_set_u32(armv7m->core_cache->reg_list[ARMV7M_SPEC20].value,
+ 24, 2, armv7m_algorithm_info->core_mode);
+ armv7m->core_cache->reg_list[ARMV7M_SPEC20].dirty = 1;
+ armv7m->core_cache->reg_list[ARMV7M_SPEC20].valid = 1;
}
/* ARMV7M always runs in Thumb state */
for (i = 0; i < num_mem_params; i++)
{
if (mem_params[i].direction != PARAM_OUT)
- if((retval = target_read_buffer(target, mem_params[i].address, mem_params[i].size, mem_params[i].value)) != ERROR_OK)
+ if ((retval = target_read_buffer(target, mem_params[i].address, mem_params[i].size, mem_params[i].value)) != ERROR_OK)
{
return retval;
}
for (i = ARMV7NUMCOREREGS-1; i >= 0; i--)
{
- u32 regvalue;
+ uint32_t regvalue;
regvalue = buf_get_u32(armv7m->core_cache->reg_list[i].value, 0, 32);
if (regvalue != context[i])
{
- LOG_DEBUG("restoring register %s with value 0x%8.8x", armv7m->core_cache->reg_list[i].name, context[i]);
+ LOG_DEBUG("restoring register %s with value 0x%8.8" PRIx32 "", armv7m->core_cache->reg_list[i].name, context[i]);
buf_set_u32(armv7m->core_cache->reg_list[i].value, 0, 32, context[i]);
armv7m->core_cache->reg_list[i].valid = 1;
armv7m->core_cache->reg_list[i].dirty = 1;
/* get pointers to arch-specific information */
armv7m_common_t *armv7m = target->arch_info;
- LOG_USER("target halted due to %s, current mode: %s %s\nxPSR: 0x%8.8x pc: 0x%8.8x",
- Jim_Nvp_value2name_simple( nvp_target_debug_reason,target->debug_reason)->name,
+ LOG_USER("target halted due to %s, current mode: %s %s\nxPSR: 0x%8.8" PRIx32 " pc: 0x%8.8" PRIx32 "",
+ Jim_Nvp_value2name_simple(nvp_target_debug_reason,target->debug_reason)->name,
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),
return ERROR_OK;
}
-int armv7m_register_commands(struct command_context_s *cmd_ctx)
-{
- command_t *arm_adi_v5_dap_cmd;
-
- arm_adi_v5_dap_cmd = register_command(cmd_ctx, NULL, "dap", NULL, COMMAND_ANY, "cortex dap specific commands");
- register_command(cmd_ctx, arm_adi_v5_dap_cmd, "info", handle_dap_info_command, COMMAND_EXEC, "Displays dap info for ap [num], default currently selected AP");
- register_command(cmd_ctx, arm_adi_v5_dap_cmd, "apsel", handle_dap_apsel_command, COMMAND_EXEC, "Select a different AP [num] (default 0)");
- register_command(cmd_ctx, arm_adi_v5_dap_cmd, "apid", handle_dap_apid_command, COMMAND_EXEC, "Displays id reg from AP [num], default currently selected AP");
- register_command(cmd_ctx, arm_adi_v5_dap_cmd, "baseaddr", handle_dap_baseaddr_command, COMMAND_EXEC, "Displays debug base address from AP [num], default currently selected AP");
- register_command(cmd_ctx, arm_adi_v5_dap_cmd, "memaccess", handle_dap_memaccess_command, COMMAND_EXEC, "set/get number of extra tck for mem-ap memory bus access [0-255]");
-
- return ERROR_OK;
-}
-
-int armv7m_checksum_memory(struct target_s *target, u32 address, u32 count, u32* checksum)
+int armv7m_checksum_memory(struct target_s *target, uint32_t address, uint32_t count, uint32_t* checksum)
{
working_area_t *crc_algorithm;
armv7m_algorithm_t armv7m_info;
reg_param_t reg_params[2];
int retval;
- u16 cortex_m3_crc_code[] = {
+ uint16_t cortex_m3_crc_code[] = {
0x4602, /* mov r2, r0 */
0xF04F, 0x30FF, /* mov r0, #0xffffffff */
0x460B, /* mov r3, r1 */
0x1DB7, 0x04C1 /* CRC32XOR: .word 0x04C11DB7 */
};
- u32 i;
+ uint32_t i;
if (target_alloc_working_area(target, sizeof(cortex_m3_crc_code), &crc_algorithm) != ERROR_OK)
{
}
/* convert flash writing code into a buffer in target endianness */
- for (i = 0; i < (sizeof(cortex_m3_crc_code)/sizeof(u16)); i++)
- if((retval = target_write_u16(target, crc_algorithm->address + i*sizeof(u16), cortex_m3_crc_code[i])) != ERROR_OK)
+ for (i = 0; i < (sizeof(cortex_m3_crc_code)/sizeof(uint16_t)); i++)
+ if ((retval = target_write_u16(target, crc_algorithm->address + i*sizeof(uint16_t), cortex_m3_crc_code[i])) != ERROR_OK)
{
return retval;
}
return ERROR_OK;
}
-int armv7m_blank_check_memory(struct target_s *target, u32 address, u32 count, u32* blank)
+int armv7m_blank_check_memory(struct target_s *target, uint32_t address, uint32_t count, uint32_t* blank)
{
working_area_t *erase_check_algorithm;
reg_param_t reg_params[3];
armv7m_algorithm_t armv7m_info;
int retval;
- u32 i;
+ uint32_t i;
- u16 erase_check_code[] =
+ uint16_t erase_check_code[] =
{
/* loop: */
0xF810, 0x3B01, /* ldrb r3, [r0], #1 */
}
/* convert flash writing code into a buffer in target endianness */
- for (i = 0; i < (sizeof(erase_check_code)/sizeof(u16)); i++)
- target_write_u16(target, erase_check_algorithm->address + i*sizeof(u16), erase_check_code[i]);
+ for (i = 0; i < (sizeof(erase_check_code)/sizeof(uint16_t)); i++)
+ target_write_u16(target, erase_check_algorithm->address + i*sizeof(uint16_t), erase_check_code[i]);
armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
armv7m_info.core_mode = ARMV7M_MODE_ANY;
return ERROR_OK;
}
-/********************************************************************************************************************
-* Return the debug ap baseaddress in hexadecimal, no extra output to simplify script processing
-*********************************************************************************************************************/
-int handle_dap_baseaddr_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+/*
+ * Return the debug ap baseaddress in hexadecimal;
+ * no extra output to simplify script processing
+ */
+static int handle_dap_baseaddr_command(struct command_context_s *cmd_ctx,
+ char *cmd, char **args, int argc)
{
target_t *target = get_current_target(cmd_ctx);
armv7m_common_t *armv7m = target->arch_info;
swjdp_common_t *swjdp = &armv7m->swjdp_info;
- u32 apsel, apselsave, baseaddr;
+ uint32_t apsel, apselsave, baseaddr;
int retval;
apsel = swjdp->apsel;
apselsave = swjdp->apsel;
if (argc > 0)
- {
+ {
apsel = strtoul(args[0], NULL, 0);
}
if (apselsave != apsel)
dap_ap_read_reg_u32(swjdp, 0xF8, &baseaddr);
retval = swjdp_transaction_endcheck(swjdp);
- command_print(cmd_ctx, "0x%8.8x", baseaddr);
+ command_print(cmd_ctx, "0x%8.8" PRIx32 "", baseaddr);
if (apselsave != apsel)
{
}
-/********************************************************************************************************************
-* Return the debug ap id in hexadecimal, no extra output to simplify script processing
-*********************************************************************************************************************/
-extern int handle_dap_apid_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+/*
+ * Return the debug ap id in hexadecimal;
+ * no extra output to simplify script processing
+ */
+extern int handle_dap_apid_command(struct command_context_s *cmd_ctx,
+ char *cmd, char **args, int argc)
{
target_t *target = get_current_target(cmd_ctx);
armv7m_common_t *armv7m = target->arch_info;
swjdp_common_t *swjdp = &armv7m->swjdp_info;
- u32 apsel, apselsave, apid;
- int retval;
-
- apsel = swjdp->apsel;
- apselsave = swjdp->apsel;
- if (argc > 0)
- {
- apsel = strtoul(args[0], NULL, 0);
- }
-
- if (apselsave != apsel)
- {
- dap_ap_select(swjdp, apsel);
- }
- dap_ap_read_reg_u32(swjdp, 0xFC, &apid);
- retval = swjdp_transaction_endcheck(swjdp);
- command_print(cmd_ctx, "0x%8.8x", apid);
- if (apselsave != apsel)
- {
- dap_ap_select(swjdp, apselsave);
- }
-
- return retval;
+ return dap_apid_command(cmd_ctx, swjdp, args, argc);
}
-int handle_dap_apsel_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+static int handle_dap_apsel_command(struct command_context_s *cmd_ctx,
+ char *cmd, char **args, int argc)
{
target_t *target = get_current_target(cmd_ctx);
armv7m_common_t *armv7m = target->arch_info;
swjdp_common_t *swjdp = &armv7m->swjdp_info;
- u32 apsel, apid;
- int retval;
-
- apsel = 0;
- if (argc > 0)
- {
- apsel = strtoul(args[0], NULL, 0);
- }
-
- dap_ap_select(swjdp, apsel);
- dap_ap_read_reg_u32(swjdp, 0xFC, &apid);
- retval = swjdp_transaction_endcheck(swjdp);
- command_print(cmd_ctx, "ap %i selected, identification register 0x%8.8x", apsel, apid);
- return retval;
+ return dap_apsel_command(cmd_ctx, swjdp, args, argc);
}
-int handle_dap_memaccess_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+static int handle_dap_memaccess_command(struct command_context_s *cmd_ctx,
+ char *cmd, char **args, int argc)
{
target_t *target = get_current_target(cmd_ctx);
armv7m_common_t *armv7m = target->arch_info;
swjdp_common_t *swjdp = &armv7m->swjdp_info;
- u32 memaccess_tck;
-
- memaccess_tck = swjdp->memaccess_tck;
- if (argc > 0)
- {
- memaccess_tck = strtoul(args[0], NULL, 0);
- }
- swjdp->memaccess_tck = memaccess_tck;
- command_print(cmd_ctx, "memory bus access delay set to %i tck", swjdp->memaccess_tck);
-
- return ERROR_OK;
+ return dap_memaccess_command(cmd_ctx, swjdp, args, argc);
}
-int handle_dap_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+
+static int handle_dap_info_command(struct command_context_s *cmd_ctx,
+ char *cmd, char **args, int argc)
{
target_t *target = get_current_target(cmd_ctx);
armv7m_common_t *armv7m = target->arch_info;
swjdp_common_t *swjdp = &armv7m->swjdp_info;
- int retval;
- u32 apsel;
+ uint32_t apsel;
apsel = swjdp->apsel;
if (argc > 0)
- {
apsel = strtoul(args[0], NULL, 0);
- }
-
- retval = dap_info_command(cmd_ctx, swjdp, apsel);
- return retval;
+ return dap_info_command(cmd_ctx, swjdp, apsel);
}
+int armv7m_register_commands(struct command_context_s *cmd_ctx)
+{
+ command_t *arm_adi_v5_dap_cmd;
+
+ arm_adi_v5_dap_cmd = register_command(cmd_ctx, NULL, "dap",
+ NULL, COMMAND_ANY,
+ "cortex dap specific commands");
+
+ register_command(cmd_ctx, arm_adi_v5_dap_cmd, "info",
+ handle_dap_info_command, COMMAND_EXEC,
+ "Displays dap info for ap [num],"
+ "default currently selected AP");
+ register_command(cmd_ctx, arm_adi_v5_dap_cmd, "apsel",
+ handle_dap_apsel_command, COMMAND_EXEC,
+ "Select a different AP [num] (default 0)");
+ register_command(cmd_ctx, arm_adi_v5_dap_cmd, "apid",
+ handle_dap_apid_command, COMMAND_EXEC,
+ "Displays id reg from AP [num], "
+ "default currently selected AP");
+ register_command(cmd_ctx, arm_adi_v5_dap_cmd, "baseaddr",
+ handle_dap_baseaddr_command, COMMAND_EXEC,
+ "Displays debug base address from AP [num],"
+ "default currently selected AP");
+ register_command(cmd_ctx, arm_adi_v5_dap_cmd, "memaccess",
+ handle_dap_memaccess_command, COMMAND_EXEC,
+ "set/get number of extra tck for mem-ap "
+ "memory bus access [0-255]");
+
+ return ERROR_OK;
+}