* Copyright (C) 2007,2008 Øyvind Harboe *
* oyvind.harboe@zylin.com *
* *
+ * Copyright (C) 2018 by Liviu Ionescu *
+ * <ilg@livius.net> *
+ * *
* 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 *
* 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., *
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
+ * along with this program. If not, see <http://www.gnu.org/licenses/>. *
* *
* ARMv7-M Architecture, Application Level Reference Manual *
* ARM DDI 0405C (September 2008) *
#include "armv7m.h"
#include "algorithm.h"
#include "register.h"
+#include "semihosting_common.h"
#if 0
#define _DEBUG_INSTRUCTION_EXECUTION_
if (armv7m->pre_restore_context)
armv7m->pre_restore_context(target);
- for (i = ARMV7M_NUM_REGS - 1; i >= 0; i--) {
+ for (i = cache->num_regs - 1; i >= 0; i--) {
if (cache->reg_list[i].dirty) {
armv7m->arm.write_core_reg(target, &cache->reg_list[i], i,
ARM_MODE_ANY, cache->reg_list[i].value);
int i;
if (reg_class == REG_CLASS_ALL)
- *reg_list_size = ARMV7M_NUM_REGS;
+ *reg_list_size = armv7m->arm.core_cache->num_regs;
else
*reg_list_size = ARMV7M_NUM_CORE_REGS;
int armv7m_run_algorithm(struct target *target,
int num_mem_params, struct mem_param *mem_params,
int num_reg_params, struct reg_param *reg_params,
- uint32_t entry_point, uint32_t exit_point,
+ target_addr_t entry_point, target_addr_t exit_point,
int timeout_ms, void *arch_info)
{
int retval;
int armv7m_start_algorithm(struct target *target,
int num_mem_params, struct mem_param *mem_params,
int num_reg_params, struct reg_param *reg_params,
- uint32_t entry_point, uint32_t exit_point,
+ target_addr_t entry_point, target_addr_t exit_point,
void *arch_info)
{
struct armv7m_common *armv7m = target_to_armv7m(target);
/* refresh core register cache
* Not needed if core register cache is always consistent with target process state */
- for (unsigned i = 0; i < ARMV7M_NUM_REGS; i++) {
+ for (unsigned i = 0; i < armv7m->arm.core_cache->num_regs; i++) {
armv7m_algorithm_info->context[i] = buf_get_u32(
armv7m->arm.core_cache->reg_list[i].value,
armv7m_set_core_reg(reg, reg_params[i].value);
}
+ {
+ /*
+ * Ensure xPSR.T is set to avoid trying to run things in arm
+ * (non-thumb) mode, which armv7m does not support.
+ *
+ * We do this by setting the entirety of xPSR, which should
+ * remove all the unknowns about xPSR state.
+ *
+ * Because xPSR.T is populated on reset from the vector table,
+ * it might be 0 if the vector table has "bad" data in it.
+ */
+ struct reg *reg = &armv7m->arm.core_cache->reg_list[ARMV7M_xPSR];
+ buf_set_u32(reg->value, 0, 32, 0x01000000);
+ reg->valid = 1;
+ reg->dirty = 1;
+ }
+
if (armv7m_algorithm_info->core_mode != ARM_MODE_ANY &&
armv7m_algorithm_info->core_mode != core_mode) {
int armv7m_wait_algorithm(struct target *target,
int num_mem_params, struct mem_param *mem_params,
int num_reg_params, struct reg_param *reg_params,
- uint32_t exit_point, int timeout_ms,
+ target_addr_t exit_point, int timeout_ms,
void *arch_info)
{
struct armv7m_common *armv7m = target_to_armv7m(target);
armv7m->load_core_reg_u32(target, 15, &pc);
if (exit_point && (pc != exit_point)) {
- LOG_DEBUG("failed algorithm halted at 0x%" PRIx32 ", expected 0x%" PRIx32,
+ LOG_DEBUG("failed algorithm halted at 0x%" PRIx32 ", expected 0x%" TARGET_PRIxADDR,
pc,
exit_point);
return ERROR_TARGET_TIMEOUT;
}
}
- for (int i = ARMV7M_NUM_REGS - 1; i >= 0; i--) {
+ for (int i = armv7m->arm.core_cache->num_regs - 1; i >= 0; i--) {
uint32_t regvalue;
regvalue = buf_get_u32(armv7m->arm.core_cache->reg_list[i].value, 0, 32);
if (regvalue != armv7m_algorithm_info->context[i]) {
struct arm *arm = &armv7m->arm;
uint32_t ctrl, sp;
+ /* avoid filling log waiting for fileio reply */
+ if (target->semihosting && target->semihosting->hit_fileio)
+ return ERROR_OK;
+
ctrl = buf_get_u32(arm->core_cache->reg_list[ARMV7M_CONTROL].value, 0, 32);
sp = buf_get_u32(arm->core_cache->reg_list[ARMV7M_R13].value, 0, 32);
LOG_USER("target halted due to %s, current mode: %s %s\n"
- "xPSR: %#8.8" PRIx32 " pc: %#8.8" PRIx32 " %csp: %#8.8" PRIx32 "%s",
+ "xPSR: %#8.8" PRIx32 " pc: %#8.8" PRIx32 " %csp: %#8.8" PRIx32 "%s%s",
debug_reason_name(target),
arm_mode_name(arm->core_mode),
armv7m_exception_string(armv7m->exception_number),
buf_get_u32(arm->pc->value, 0, 32),
(ctrl & 0x02) ? 'p' : 'm',
sp,
- arm->is_semihosting ? ", semihosting" : "");
+ (target->semihosting && target->semihosting->is_active) ? ", semihosting" : "",
+ (target->semihosting && target->semihosting->is_fileio) ? " fileio" : "");
return ERROR_OK;
}
return cache;
}
+void armv7m_free_reg_cache(struct target *target)
+{
+ struct armv7m_common *armv7m = target_to_armv7m(target);
+ struct arm *arm = &armv7m->arm;
+ struct reg_cache *cache;
+ struct reg *reg;
+ unsigned int i;
+
+ cache = arm->core_cache;
+
+ if (!cache)
+ return;
+
+ for (i = 0; i < cache->num_regs; i++) {
+ reg = &cache->reg_list[i];
+
+ free(reg->feature);
+ free(reg->reg_data_type);
+ free(reg->value);
+ }
+
+ free(cache->reg_list[0].arch_info);
+ free(cache->reg_list);
+ free(cache);
+
+ arm->core_cache = NULL;
+}
+
static int armv7m_setup_semihosting(struct target *target, int enable)
{
/* nothing todo for armv7m */
armv7m->common_magic = ARMV7M_COMMON_MAGIC;
armv7m->fp_feature = FP_NONE;
+ armv7m->trace_config.trace_bus_id = 1;
+ /* Enable stimulus port #0 by default */
+ armv7m->trace_config.itm_ter[0] = 1;
arm->core_type = ARM_MODE_THREAD;
arm->arch_info = armv7m;
/** Generates a CRC32 checksum of a memory region. */
int armv7m_checksum_memory(struct target *target,
- uint32_t address, uint32_t count, uint32_t *checksum)
+ target_addr_t address, uint32_t count, uint32_t *checksum)
{
struct working_area *crc_algorithm;
struct armv7m_algorithm armv7m_info;
struct reg_param reg_params[2];
int retval;
- /* see contrib/loaders/checksum/armv7m_crc.s for src */
-
static const uint8_t cortex_m_crc_code[] = {
- /* main: */
- 0x02, 0x46, /* mov r2, r0 */
- 0x00, 0x20, /* movs r0, #0 */
- 0xC0, 0x43, /* mvns r0, r0 */
- 0x0A, 0x4E, /* ldr r6, CRC32XOR */
- 0x0B, 0x46, /* mov r3, r1 */
- 0x00, 0x24, /* movs r4, #0 */
- 0x0D, 0xE0, /* b ncomp */
- /* nbyte: */
- 0x11, 0x5D, /* ldrb r1, [r2, r4] */
- 0x09, 0x06, /* lsls r1, r1, #24 */
- 0x48, 0x40, /* eors r0, r0, r1 */
- 0x00, 0x25, /* movs r5, #0 */
- /* loop: */
- 0x00, 0x28, /* cmp r0, #0 */
- 0x02, 0xDA, /* bge notset */
- 0x40, 0x00, /* lsls r0, r0, #1 */
- 0x70, 0x40, /* eors r0, r0, r6 */
- 0x00, 0xE0, /* b cont */
- /* notset: */
- 0x40, 0x00, /* lsls r0, r0, #1 */
- /* cont: */
- 0x01, 0x35, /* adds r5, r5, #1 */
- 0x08, 0x2D, /* cmp r5, #8 */
- 0xF6, 0xD1, /* bne loop */
- 0x01, 0x34, /* adds r4, r4, #1 */
- /* ncomp: */
- 0x9C, 0x42, /* cmp r4, r3 */
- 0xEF, 0xD1, /* bne nbyte */
- 0x00, 0xBE, /* bkpt #0 */
- 0xB7, 0x1D, 0xC1, 0x04 /* CRC32XOR: .word 0x04c11db7 */
+#include "../../contrib/loaders/checksum/armv7m_crc.inc"
};
retval = target_alloc_working_area(target, sizeof(cortex_m_crc_code), &crc_algorithm);
return retval;
}
-/** Checks whether a memory region is zeroed. */
+/** Checks an array of memory regions whether they are erased. */
int armv7m_blank_check_memory(struct target *target,
- uint32_t address, uint32_t count, uint32_t *blank)
+ struct target_memory_check_block *blocks, int num_blocks, uint8_t erased_value)
{
struct working_area *erase_check_algorithm;
- struct reg_param reg_params[3];
+ struct working_area *erase_check_params;
+ struct reg_param reg_params[2];
struct armv7m_algorithm armv7m_info;
int retval;
- /* see contrib/loaders/erase_check/armv7m_erase_check.s for src */
+ static bool timed_out;
static const uint8_t erase_check_code[] = {
- /* loop: */
- 0x03, 0x78, /* ldrb r3, [r0] */
- 0x01, 0x30, /* adds r0, #1 */
- 0x1A, 0x40, /* ands r2, r2, r3 */
- 0x01, 0x39, /* subs r1, r1, #1 */
- 0xFA, 0xD1, /* bne loop */
- 0x00, 0xBE /* bkpt #0 */
+#include "../../contrib/loaders/erase_check/armv7m_erase_check.inc"
};
+ const uint32_t code_size = sizeof(erase_check_code);
+
/* make sure we have a working area */
- if (target_alloc_working_area(target, sizeof(erase_check_code),
+ if (target_alloc_working_area(target, code_size,
&erase_check_algorithm) != ERROR_OK)
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
retval = target_write_buffer(target, erase_check_algorithm->address,
- sizeof(erase_check_code), (uint8_t *)erase_check_code);
+ code_size, erase_check_code);
if (retval != ERROR_OK)
- return retval;
+ goto cleanup1;
+
+ /* prepare blocks array for algo */
+ struct algo_block {
+ union {
+ uint32_t size;
+ uint32_t result;
+ };
+ uint32_t address;
+ };
+
+ uint32_t avail = target_get_working_area_avail(target);
+ int blocks_to_check = avail / sizeof(struct algo_block) - 1;
+ if (num_blocks < blocks_to_check)
+ blocks_to_check = num_blocks;
+
+ struct algo_block *params = malloc((blocks_to_check+1)*sizeof(struct algo_block));
+ if (params == NULL) {
+ retval = ERROR_FAIL;
+ goto cleanup1;
+ }
+
+ int i;
+ uint32_t total_size = 0;
+ for (i = 0; i < blocks_to_check; i++) {
+ total_size += blocks[i].size;
+ target_buffer_set_u32(target, (uint8_t *)&(params[i].size),
+ blocks[i].size / sizeof(uint32_t));
+ target_buffer_set_u32(target, (uint8_t *)&(params[i].address),
+ blocks[i].address);
+ }
+ target_buffer_set_u32(target, (uint8_t *)&(params[blocks_to_check].size), 0);
+
+ uint32_t param_size = (blocks_to_check + 1) * sizeof(struct algo_block);
+ if (target_alloc_working_area(target, param_size,
+ &erase_check_params) != ERROR_OK) {
+ retval = ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+ goto cleanup2;
+ }
+
+ retval = target_write_buffer(target, erase_check_params->address,
+ param_size, (uint8_t *)params);
+ if (retval != ERROR_OK)
+ goto cleanup3;
+
+ uint32_t erased_word = erased_value | (erased_value << 8)
+ | (erased_value << 16) | (erased_value << 24);
+
+ LOG_DEBUG("Starting erase check of %d blocks, parameters@"
+ TARGET_ADDR_FMT, blocks_to_check, erase_check_params->address);
armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
armv7m_info.core_mode = ARM_MODE_THREAD;
init_reg_param(®_params[0], "r0", 32, PARAM_OUT);
- buf_set_u32(reg_params[0].value, 0, 32, address);
+ buf_set_u32(reg_params[0].value, 0, 32, erase_check_params->address);
init_reg_param(®_params[1], "r1", 32, PARAM_OUT);
- buf_set_u32(reg_params[1].value, 0, 32, count);
+ buf_set_u32(reg_params[1].value, 0, 32, erased_word);
- init_reg_param(®_params[2], "r2", 32, PARAM_IN_OUT);
- buf_set_u32(reg_params[2].value, 0, 32, 0xff);
+ /* assume CPU clk at least 1 MHz */
+ int timeout = (timed_out ? 30000 : 2000) + total_size * 3 / 1000;
retval = target_run_algorithm(target,
- 0,
- NULL,
- 3,
- reg_params,
- erase_check_algorithm->address,
- erase_check_algorithm->address + (sizeof(erase_check_code) - 2),
- 10000,
- &armv7m_info);
+ 0, NULL,
+ ARRAY_SIZE(reg_params), reg_params,
+ erase_check_algorithm->address,
+ erase_check_algorithm->address + (code_size - 2),
+ timeout,
+ &armv7m_info);
+
+ timed_out = retval == ERROR_TARGET_TIMEOUT;
+ if (retval != ERROR_OK && !timed_out)
+ goto cleanup4;
+
+ retval = target_read_buffer(target, erase_check_params->address,
+ param_size, (uint8_t *)params);
+ if (retval != ERROR_OK)
+ goto cleanup4;
- if (retval == ERROR_OK)
- *blank = buf_get_u32(reg_params[2].value, 0, 32);
+ for (i = 0; i < blocks_to_check; i++) {
+ uint32_t result = target_buffer_get_u32(target,
+ (uint8_t *)&(params[i].result));
+ if (result != 0 && result != 1)
+ break;
+ blocks[i].result = result;
+ }
+ if (i && timed_out)
+ LOG_INFO("Slow CPU clock: %d blocks checked, %d remain. Continuing...", i, num_blocks-i);
+
+ retval = i; /* return number of blocks really checked */
+
+cleanup4:
destroy_reg_param(®_params[0]);
destroy_reg_param(®_params[1]);
- destroy_reg_param(®_params[2]);
+cleanup3:
+ target_free_working_area(target, erase_check_params);
+cleanup2:
+ free(params);
+cleanup1:
target_free_working_area(target, erase_check_algorithm);
return retval;
{
.chain = arm_command_handlers,
},
- {
- .chain = dap_command_handlers,
- },
COMMAND_REGISTRATION_DONE
};
Code Review / openocd.git / blobdiff