-int arm7_9_blank_check_memory(struct target_s *target, uint32_t address, uint32_t count, uint32_t* blank)
-{
- working_area_t *erase_check_algorithm;
- struct reg_param reg_params[3];
- armv4_5_algorithm_t armv4_5_info;
- int retval;
- uint32_t i;
-
- static const uint32_t erase_check_code[] =
- {
- /* loop: */
- 0xe4d03001, /* ldrb r3, [r0], #1 */
- 0xe0022003, /* and r2, r2, r3 */
- 0xe2511001, /* subs r1, r1, #1 */
- 0x1afffffb, /* bne loop */
- /* end: */
- 0xeafffffe /* b end */
- };
-
- /* make sure we have a working area */
- if (target_alloc_working_area(target, sizeof(erase_check_code), &erase_check_algorithm) != ERROR_OK)
- {
- return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
- }
-
- /* convert flash writing code into a buffer in target endianness */
- for (i = 0; i < (sizeof(erase_check_code)/sizeof(uint32_t)); i++)
- if ((retval = target_write_u32(target, erase_check_algorithm->address + i*sizeof(uint32_t), erase_check_code[i])) != ERROR_OK)
- {
- return retval;
- }
-
- armv4_5_info.common_magic = ARMV4_5_COMMON_MAGIC;
- armv4_5_info.core_mode = ARMV4_5_MODE_SVC;
- armv4_5_info.core_state = ARMV4_5_STATE_ARM;
-
- init_reg_param(®_params[0], "r0", 32, PARAM_OUT);
- buf_set_u32(reg_params[0].value, 0, 32, address);
-
- init_reg_param(®_params[1], "r1", 32, PARAM_OUT);
- buf_set_u32(reg_params[1].value, 0, 32, count);
-
- init_reg_param(®_params[2], "r2", 32, PARAM_IN_OUT);
- buf_set_u32(reg_params[2].value, 0, 32, 0xff);
-
- if ((retval = target_run_algorithm(target, 0, NULL, 3, reg_params,
- erase_check_algorithm->address, erase_check_algorithm->address + (sizeof(erase_check_code) - 4), 10000, &armv4_5_info)) != ERROR_OK)
- {
- destroy_reg_param(®_params[0]);
- destroy_reg_param(®_params[1]);
- destroy_reg_param(®_params[2]);
- target_free_working_area(target, erase_check_algorithm);
- return 0;
- }
-
- *blank = buf_get_u32(reg_params[2].value, 0, 32);
-
- destroy_reg_param(®_params[0]);
- destroy_reg_param(®_params[1]);
- destroy_reg_param(®_params[2]);
-
- target_free_working_area(target, erase_check_algorithm);
-
- return ERROR_OK;
-}