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openocd/src/flash/nor/lpc2000.c

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/***************************************************************************
* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
* LPC1700 support Copyright (C) 2009 by Audrius Urmanavicius *
* didele.deze@gmail.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 *
* (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., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "imp.h"
#include <helper/binarybuffer.h>
#include <target/algorithm.h>
#include <target/arm_opcodes.h>
#include <target/armv7m.h>
/**
* @file
* flash programming support for NXP LPC17xx and LPC2xxx devices.
*
* @todo Provide a way to update CCLK after declaring the flash bank. The value which is correct after chip reset will
* rarely still work right after the clocks switch to use the PLL (e.g. 4MHz --> 100 MHz).
*/
/*
* currently supported devices:
* variant 1 (lpc2000_v1):
* - 2104 | 5 | 6
* - 2114 | 9
* - 2124 | 9
* - 2194
* - 2212 | 4
* - 2292 | 4
*
* variant 2 (lpc2000_v2):
* - 213x
* - 214x
* - 2101 | 2 | 3
* - 2364 | 6 | 8
* - 2378
*
* lpc1700:
* - 175x
* - 176x (tested with LPC1768)
*
* lpc4300 (also available as lpc1800 - alias)
* - 43x2 | 3 | 5 | 7 (tested with 4337)
* - 18x2 | 3 | 5 | 7
*/
typedef enum {
lpc2000_v1,
lpc2000_v2,
lpc1700,
lpc4300,
} lpc2000_variant;
struct lpc2000_flash_bank {
lpc2000_variant variant;
uint32_t cclk;
int cmd51_dst_boundary;
int cmd51_can_256b;
int cmd51_can_8192b;
int calc_checksum;
uint32_t cmd51_max_buffer;
int checksum_vector;
uint32_t iap_max_stack;
uint32_t cmd51_src_offset;
uint32_t lpc4300_bank;
};
enum lpc2000_status_codes {
LPC2000_CMD_SUCCESS = 0,
LPC2000_INVALID_COMMAND = 1,
LPC2000_SRC_ADDR_ERROR = 2,
LPC2000_DST_ADDR_ERROR = 3,
LPC2000_SRC_ADDR_NOT_MAPPED = 4,
LPC2000_DST_ADDR_NOT_MAPPED = 5,
LPC2000_COUNT_ERROR = 6,
LPC2000_INVALID_SECTOR = 7,
LPC2000_SECTOR_NOT_BLANK = 8,
LPC2000_SECTOR_NOT_PREPARED = 9,
LPC2000_COMPARE_ERROR = 10,
LPC2000_BUSY = 11,
LPC2000_PARAM_ERROR = 12,
LPC2000_ADDR_ERROR = 13,
LPC2000_ADDR_NOT_MAPPED = 14,
LPC2000_CMD_NOT_LOCKED = 15,
LPC2000_INVALID_CODE = 16,
LPC2000_INVALID_BAUD_RATE = 17,
LPC2000_INVALID_STOP_BIT = 18,
LPC2000_CRP_ENABLED = 19,
LPC2000_INVALID_FLASH_UNIT = 20,
LPC2000_USER_CODE_CHECKSUM = 21,
LCP2000_ERROR_SETTING_ACTIVE_PARTITION = 22,
};
static int lpc2000_build_sector_list(struct flash_bank *bank)
{
struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
uint32_t offset = 0;
/* default to a 4096 write buffer */
lpc2000_info->cmd51_max_buffer = 4096;
if (lpc2000_info->variant == lpc2000_v1) {
/* variant 1 has different layout for 128kb and 256kb flashes */
if (bank->size == 128 * 1024) {
bank->num_sectors = 16;
bank->sectors = malloc(sizeof(struct flash_sector) * 16);
for (int i = 0; i < 16; i++) {
bank->sectors[i].offset = offset;
bank->sectors[i].size = 8 * 1024;
offset += bank->sectors[i].size;
bank->sectors[i].is_erased = -1;
bank->sectors[i].is_protected = 1;
}
} else if (bank->size == 256 * 1024) {
bank->num_sectors = 18;
bank->sectors = malloc(sizeof(struct flash_sector) * 18);
for (int i = 0; i < 8; i++) {
bank->sectors[i].offset = offset;
bank->sectors[i].size = 8 * 1024;
offset += bank->sectors[i].size;
bank->sectors[i].is_erased = -1;
bank->sectors[i].is_protected = 1;
}
for (int i = 8; i < 10; i++) {
bank->sectors[i].offset = offset;
bank->sectors[i].size = 64 * 1024;
offset += bank->sectors[i].size;
bank->sectors[i].is_erased = -1;
bank->sectors[i].is_protected = 1;
}
for (int i = 10; i < 18; i++) {
bank->sectors[i].offset = offset;
bank->sectors[i].size = 8 * 1024;
offset += bank->sectors[i].size;
bank->sectors[i].is_erased = -1;
bank->sectors[i].is_protected = 1;
}
} else {
LOG_ERROR("BUG: unknown bank->size encountered");
exit(-1);
}
} else if (lpc2000_info->variant == lpc2000_v2) {
/* variant 2 has a uniform layout, only number of sectors differs */
switch (bank->size) {
case 4 * 1024:
lpc2000_info->cmd51_max_buffer = 1024;
bank->num_sectors = 1;
break;
case 8 * 1024:
lpc2000_info->cmd51_max_buffer = 1024;
bank->num_sectors = 2;
break;
case 16 * 1024:
bank->num_sectors = 4;
break;
case 32 * 1024:
bank->num_sectors = 8;
break;
case 64 * 1024:
bank->num_sectors = 9;
break;
case 128 * 1024:
bank->num_sectors = 11;
break;
case 256 * 1024:
bank->num_sectors = 15;
break;
case 500 * 1024:
bank->num_sectors = 27;
break;
case 512 * 1024:
case 504 * 1024:
bank->num_sectors = 28;
break;
default:
LOG_ERROR("BUG: unknown bank->size encountered");
exit(-1);
break;
}
bank->sectors = malloc(sizeof(struct flash_sector) * bank->num_sectors);
for (int i = 0; i < bank->num_sectors; i++) {
if (i < 8) {
bank->sectors[i].offset = offset;
bank->sectors[i].size = 4 * 1024;
offset += bank->sectors[i].size;
bank->sectors[i].is_erased = -1;
bank->sectors[i].is_protected = 1;
} else if (i < 22) {
bank->sectors[i].offset = offset;
bank->sectors[i].size = 32 * 1024;
offset += bank->sectors[i].size;
bank->sectors[i].is_erased = -1;
bank->sectors[i].is_protected = 1;
} else if (i < 28) {
bank->sectors[i].offset = offset;
bank->sectors[i].size = 4 * 1024;
offset += bank->sectors[i].size;
bank->sectors[i].is_erased = -1;
bank->sectors[i].is_protected = 1;
}
}
} else if (lpc2000_info->variant == lpc1700) {
switch (bank->size) {
case 32 * 1024:
bank->num_sectors = 8;
break;
case 64 * 1024:
bank->num_sectors = 16;
break;
case 128 * 1024:
bank->num_sectors = 18;
break;
case 256 * 1024:
bank->num_sectors = 22;
break;
case 512 * 1024:
bank->num_sectors = 30;
break;
default:
LOG_ERROR("BUG: unknown bank->size encountered");
exit(-1);
}
bank->sectors = malloc(sizeof(struct flash_sector) * bank->num_sectors);
for (int i = 0; i < bank->num_sectors; i++) {
bank->sectors[i].offset = offset;
/* sectors 0-15 are 4kB-sized, 16 and above are 32kB-sized for LPC17xx devices */
bank->sectors[i].size = (i < 16) ? 4 * 1024 : 32 * 1024;
offset += bank->sectors[i].size;
bank->sectors[i].is_erased = -1;
bank->sectors[i].is_protected = 1;
}
} else if (lpc2000_info->variant == lpc4300) {
switch (bank->size) {
case 256 * 1024:
bank->num_sectors = 11;
break;
case 384 * 1024:
bank->num_sectors = 13;
break;
case 512 * 1024:
bank->num_sectors = 15;
break;
default:
LOG_ERROR("BUG: unknown bank->size encountered");
exit(-1);
}
bank->sectors = malloc(sizeof(struct flash_sector) * bank->num_sectors);
for (int i = 0; i < bank->num_sectors; i++) {
bank->sectors[i].offset = offset;
/* sectors 0-7 are 8kB-sized, 8 and above are 64kB-sized for LPC43xx devices */
bank->sectors[i].size = (i < 8) ? 8 * 1024 : 64 * 1024;
offset += bank->sectors[i].size;
bank->sectors[i].is_erased = -1;
bank->sectors[i].is_protected = 1;
}
} else {
LOG_ERROR("BUG: unknown lpc2000_info->variant encountered");
exit(-1);
}
return ERROR_OK;
}
/* this function allocates and initializes working area used for IAP algorithm
* uses 52 + max IAP stack bytes working area
* 0x0 to 0x7: jump gate (BX to thumb state, b -2 to wait)
* 0x8 to 0x1f: command parameter table (1+5 words)
* 0x20 to 0x33: command result table (1+4 words)
* 0x34 to 0xb3|0x104: stack (only 128b needed for lpc17xx/2000, 208 for lpc43xx)
*/
static int lpc2000_iap_working_area_init(struct flash_bank *bank, struct working_area **iap_working_area)
{
struct target *target = bank->target;
struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
if (target_alloc_working_area(target, 0x34 + lpc2000_info->iap_max_stack, iap_working_area) != ERROR_OK) {
LOG_ERROR("no working area specified, can't write LPC2000 internal flash");
return ERROR_FLASH_OPERATION_FAILED;
}
uint8_t jump_gate[8];
/* write IAP code to working area */
switch (lpc2000_info->variant) {
case lpc1700:
case lpc4300:
target_buffer_set_u32(target, jump_gate, ARMV4_5_T_BX(12));
target_buffer_set_u32(target, jump_gate + 4, ARMV5_T_BKPT(0));
break;
case lpc2000_v1:
case lpc2000_v2:
target_buffer_set_u32(target, jump_gate, ARMV4_5_BX(12));
target_buffer_set_u32(target, jump_gate + 4, ARMV4_5_B(0xfffffe, 0));
break;
default:
LOG_ERROR("BUG: unknown lpc2000_info->variant encountered");
exit(-1);
}
int retval = target_write_memory(target, (*iap_working_area)->address, 4, 2, jump_gate);
if (retval != ERROR_OK)
LOG_ERROR("Write memory at address 0x%8.8" PRIx32 " failed (check work_area definition)",
(*iap_working_area)->address);
return retval;
}
/* call LPC1700/LPC2000 IAP function */
static int lpc2000_iap_call(struct flash_bank *bank, struct working_area *iap_working_area, int code,
uint32_t param_table[5], uint32_t result_table[4])
{
struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
struct target *target = bank->target;
struct arm_algorithm arm_algo; /* for LPC2000 */
struct armv7m_algorithm armv7m_info; /* for LPC1700 */
uint32_t iap_entry_point = 0; /* to make compiler happier */
switch (lpc2000_info->variant) {
case lpc1700:
armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
armv7m_info.core_mode = ARM_MODE_THREAD;
iap_entry_point = 0x1fff1ff1;
break;
case lpc2000_v1:
case lpc2000_v2:
arm_algo.common_magic = ARM_COMMON_MAGIC;
arm_algo.core_mode = ARM_MODE_SVC;
arm_algo.core_state = ARM_STATE_ARM;
iap_entry_point = 0x7ffffff1;
break;
case lpc4300:
armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
armv7m_info.core_mode = ARM_MODE_THREAD;
/* read out IAP entry point from ROM driver table at 0x10400100 */
target_read_u32(target, 0x10400100, &iap_entry_point);
break;
default:
LOG_ERROR("BUG: unknown lpc2000->variant encountered");
exit(-1);
}
struct mem_param mem_params[2];
/* command parameter table */
init_mem_param(&mem_params[0], iap_working_area->address + 8, 6 * 4, PARAM_OUT);
target_buffer_set_u32(target, mem_params[0].value, code);
target_buffer_set_u32(target, mem_params[0].value + 0x04, param_table[0]);
target_buffer_set_u32(target, mem_params[0].value + 0x08, param_table[1]);
target_buffer_set_u32(target, mem_params[0].value + 0x0c, param_table[2]);
target_buffer_set_u32(target, mem_params[0].value + 0x10, param_table[3]);
target_buffer_set_u32(target, mem_params[0].value + 0x14, param_table[4]);
struct reg_param reg_params[5];
init_reg_param(&reg_params[0], "r0", 32, PARAM_OUT);
buf_set_u32(reg_params[0].value, 0, 32, iap_working_area->address + 0x08);
/* command result table */
init_mem_param(&mem_params[1], iap_working_area->address + 0x20, 5 * 4, PARAM_IN);
init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT);
buf_set_u32(reg_params[1].value, 0, 32, iap_working_area->address + 0x20);
/* IAP entry point */
init_reg_param(&reg_params[2], "r12", 32, PARAM_OUT);
buf_set_u32(reg_params[2].value, 0, 32, iap_entry_point);
switch (lpc2000_info->variant) {
case lpc1700:
case lpc4300:
/* IAP stack */
init_reg_param(&reg_params[3], "sp", 32, PARAM_OUT);
buf_set_u32(reg_params[3].value, 0, 32, iap_working_area->address + lpc2000_info->cmd51_src_offset);
/* return address */
init_reg_param(&reg_params[4], "lr", 32, PARAM_OUT);
buf_set_u32(reg_params[4].value, 0, 32, (iap_working_area->address + 0x04) | 1);
/* bit0 of LR = 1 to return in Thumb mode */
target_run_algorithm(target, 2, mem_params, 5, reg_params, iap_working_area->address, 0, 10000,
&armv7m_info);
break;
case lpc2000_v1:
case lpc2000_v2:
/* IAP stack */
init_reg_param(&reg_params[3], "sp_svc", 32, PARAM_OUT);
buf_set_u32(reg_params[3].value, 0, 32, iap_working_area->address + lpc2000_info->cmd51_src_offset);
/* return address */
init_reg_param(&reg_params[4], "lr_svc", 32, PARAM_OUT);
buf_set_u32(reg_params[4].value, 0, 32, iap_working_area->address + 0x04);
target_run_algorithm(target, 2, mem_params, 5, reg_params, iap_working_area->address,
iap_working_area->address + 0x4, 10000, &arm_algo);
break;
default:
LOG_ERROR("BUG: unknown lpc2000->variant encountered");
exit(-1);
}
int status_code = target_buffer_get_u32(target, mem_params[1].value);
result_table[0] = target_buffer_get_u32(target, mem_params[1].value + 0x04);
result_table[1] = target_buffer_get_u32(target, mem_params[1].value + 0x08);
result_table[2] = target_buffer_get_u32(target, mem_params[1].value + 0x0c);
result_table[3] = target_buffer_get_u32(target, mem_params[1].value + 0x10);
LOG_DEBUG("IAP command = %i (0x%8.8" PRIx32 ", 0x%8.8" PRIx32 ", 0x%8.8" PRIx32 ", 0x%8.8" PRIx32 ", 0x%8.8" PRIx32
") completed with result = %8.8" PRIx32,
code, param_table[0], param_table[1], param_table[2], param_table[3], param_table[4], status_code);
destroy_mem_param(&mem_params[0]);
destroy_mem_param(&mem_params[1]);
destroy_reg_param(&reg_params[0]);
destroy_reg_param(&reg_params[1]);
destroy_reg_param(&reg_params[2]);
destroy_reg_param(&reg_params[3]);
destroy_reg_param(&reg_params[4]);
return status_code;
}
static int lpc2000_iap_blank_check(struct flash_bank *bank, int first, int last)
{
if ((first < 0) || (last >= bank->num_sectors))
return ERROR_FLASH_SECTOR_INVALID;
uint32_t param_table[5] = {0};
uint32_t result_table[4];
struct working_area *iap_working_area;
int retval = lpc2000_iap_working_area_init(bank, &iap_working_area);
if (retval != ERROR_OK)
return retval;
struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
if (lpc2000_info->variant == lpc4300)
param_table[2] = lpc2000_info->lpc4300_bank;
for (int i = first; i <= last && retval == ERROR_OK; i++) {
/* check single sector */
param_table[0] = param_table[1] = i;
int status_code = lpc2000_iap_call(bank, iap_working_area, 53, param_table, result_table);
switch (status_code) {
case ERROR_FLASH_OPERATION_FAILED:
retval = ERROR_FLASH_OPERATION_FAILED;
break;
case LPC2000_CMD_SUCCESS:
bank->sectors[i].is_erased = 1;
break;
case LPC2000_SECTOR_NOT_BLANK:
bank->sectors[i].is_erased = 0;
break;
case LPC2000_INVALID_SECTOR:
bank->sectors[i].is_erased = 0;
break;
case LPC2000_BUSY:
retval = ERROR_FLASH_BUSY;
break;
default:
LOG_ERROR("BUG: unknown LPC2000 status code %i", status_code);
exit(-1);
}
}
struct target *target = bank->target;
target_free_working_area(target, iap_working_area);
return retval;
}
/*
* flash bank lpc2000 <base> <size> 0 0 <target#> <lpc_variant> <cclk> [calc_checksum]
*/
FLASH_BANK_COMMAND_HANDLER(lpc2000_flash_bank_command)
{
if (CMD_ARGC < 8)
return ERROR_COMMAND_SYNTAX_ERROR;
struct lpc2000_flash_bank *lpc2000_info = malloc(sizeof(struct lpc2000_flash_bank));
bank->driver_priv = lpc2000_info;
if (strcmp(CMD_ARGV[6], "lpc2000_v1") == 0) {
lpc2000_info->variant = lpc2000_v1;
lpc2000_info->cmd51_dst_boundary = 512;
lpc2000_info->cmd51_can_256b = 0;
lpc2000_info->cmd51_can_8192b = 1;
lpc2000_info->checksum_vector = 5;
lpc2000_info->iap_max_stack = 128;
} else if (strcmp(CMD_ARGV[6], "lpc2000_v2") == 0) {
lpc2000_info->variant = lpc2000_v2;
lpc2000_info->cmd51_dst_boundary = 256;
lpc2000_info->cmd51_can_256b = 1;
lpc2000_info->cmd51_can_8192b = 0;
lpc2000_info->checksum_vector = 5;
lpc2000_info->iap_max_stack = 128;
} else if (strcmp(CMD_ARGV[6], "lpc1700") == 0) {
lpc2000_info->variant = lpc1700;
lpc2000_info->cmd51_dst_boundary = 256;
lpc2000_info->cmd51_can_256b = 1;
lpc2000_info->cmd51_can_8192b = 0;
lpc2000_info->checksum_vector = 7;
lpc2000_info->iap_max_stack = 128;
} else if (strcmp(CMD_ARGV[6], "lpc1800") == 0 || strcmp(CMD_ARGV[6], "lpc4300") == 0) {
lpc2000_info->variant = lpc4300;
lpc2000_info->cmd51_dst_boundary = 512;
lpc2000_info->cmd51_can_256b = 0;
lpc2000_info->cmd51_can_8192b = 0;
lpc2000_info->checksum_vector = 7;
lpc2000_info->iap_max_stack = 208;
} else {
LOG_ERROR("unknown LPC2000 variant: %s", CMD_ARGV[6]);
free(lpc2000_info);
return ERROR_FLASH_BANK_INVALID;
}
/* see lpc2000_iap_working_area_init() for the reason behind the 0x34 value */
lpc2000_info->cmd51_src_offset = 0x34 + lpc2000_info->iap_max_stack;
COMMAND_PARSE_NUMBER(u32, CMD_ARGV[7], lpc2000_info->cclk);
lpc2000_info->calc_checksum = 0;
lpc2000_build_sector_list(bank);
uint32_t temp_base = 0;
COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], temp_base);
if (temp_base >= 0x1B000000)
lpc2000_info->lpc4300_bank = 1; /* bank B */
else
lpc2000_info->lpc4300_bank = 0; /* bank A */
if (CMD_ARGC >= 9) {
if (strcmp(CMD_ARGV[8], "calc_checksum") == 0)
lpc2000_info->calc_checksum = 1;
}
return ERROR_OK;
}
static int lpc2000_erase(struct flash_bank *bank, int first, int last)
{
if (bank->target->state != TARGET_HALTED) {
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
uint32_t param_table[5] = {0};
param_table[0] = first;
param_table[1] = last;
if (lpc2000_info->variant == lpc4300)
param_table[2] = lpc2000_info->lpc4300_bank;
else
param_table[2] = lpc2000_info->cclk;
uint32_t result_table[4];
struct working_area *iap_working_area;
int retval = lpc2000_iap_working_area_init(bank, &iap_working_area);
if (retval != ERROR_OK)
return retval;
/* Prepare sectors */
int status_code = lpc2000_iap_call(bank, iap_working_area, 50, param_table, result_table);
switch (status_code) {
case ERROR_FLASH_OPERATION_FAILED:
retval = ERROR_FLASH_OPERATION_FAILED;
break;
case LPC2000_CMD_SUCCESS:
break;
case LPC2000_INVALID_SECTOR:
retval = ERROR_FLASH_SECTOR_INVALID;
break;
default:
LOG_WARNING("lpc2000 prepare sectors returned %i", status_code);
retval = ERROR_FLASH_OPERATION_FAILED;
break;
}
if (retval == ERROR_OK) {
/* Erase sectors */
param_table[2] = lpc2000_info->cclk;
if (lpc2000_info->variant == lpc4300)
param_table[3] = lpc2000_info->lpc4300_bank;
status_code = lpc2000_iap_call(bank, iap_working_area, 52, param_table, result_table);
switch (status_code) {
case ERROR_FLASH_OPERATION_FAILED:
retval = ERROR_FLASH_OPERATION_FAILED;
break;
case LPC2000_CMD_SUCCESS:
break;
case LPC2000_INVALID_SECTOR:
retval = ERROR_FLASH_SECTOR_INVALID;
break;
default:
LOG_WARNING("lpc2000 erase sectors returned %i", status_code);
retval = ERROR_FLASH_OPERATION_FAILED;
break;
}
}
struct target *target = bank->target;
target_free_working_area(target, iap_working_area);
return retval;
}
static int lpc2000_protect(struct flash_bank *bank, int set, int first, int last)
{
/* can't protect/unprotect on the lpc2000 */
return ERROR_OK;
}
static int lpc2000_write(struct flash_bank *bank, uint8_t *buffer, uint32_t offset, uint32_t count)
{
struct target *target = bank->target;
if (bank->target->state != TARGET_HALTED) {
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
if (offset + count > bank->size)
return ERROR_FLASH_DST_OUT_OF_BANK;
struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
uint32_t dst_min_alignment = lpc2000_info->cmd51_dst_boundary;
if (offset % dst_min_alignment) {
LOG_WARNING("offset 0x%" PRIx32 " breaks required alignment 0x%" PRIx32, offset, dst_min_alignment);
return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
}
int first_sector = 0;
int last_sector = 0;
for (int i = 0; i < bank->num_sectors; i++) {
if (offset >= bank->sectors[i].offset)
first_sector = i;
if (offset + DIV_ROUND_UP(count, dst_min_alignment) * dst_min_alignment > bank->sectors[i].offset)
last_sector = i;
}
LOG_DEBUG("first_sector: %i, last_sector: %i", first_sector, last_sector);
/* check if exception vectors should be flashed */
if ((offset == 0) && (count >= 0x20) && lpc2000_info->calc_checksum) {
uint32_t checksum = 0;
for (int i = 0; i < 8; i++) {
LOG_DEBUG("Vector 0x%2.2x: 0x%8.8" PRIx32, i * 4, buf_get_u32(buffer + (i * 4), 0, 32));
if (i != lpc2000_info->checksum_vector)
checksum += buf_get_u32(buffer + (i * 4), 0, 32);
}
checksum = 0 - checksum;
LOG_DEBUG("checksum: 0x%8.8" PRIx32, checksum);
uint32_t original_value = buf_get_u32(buffer + (lpc2000_info->checksum_vector * 4), 0, 32);
if (original_value != checksum) {
LOG_WARNING("Verification will fail since checksum in image (0x%8.8" PRIx32 ") to be written to flash is "
"different from calculated vector checksum (0x%8.8" PRIx32 ").", original_value, checksum);
LOG_WARNING("To remove this warning modify build tools on developer PC to inject correct LPC vector "
"checksum.");
}
buf_set_u32(buffer + (lpc2000_info->checksum_vector * 4), 0, 32, checksum);
}
struct working_area *iap_working_area;
int retval = lpc2000_iap_working_area_init(bank, &iap_working_area);
if (retval != ERROR_OK)
return retval;
struct working_area *download_area;
/* allocate a working area */
if (target_alloc_working_area(target, lpc2000_info->cmd51_max_buffer, &download_area) != ERROR_OK) {
LOG_ERROR("no working area specified, can't write LPC2000 internal flash");
target_free_working_area(target, iap_working_area);
return ERROR_FLASH_OPERATION_FAILED;
}
uint32_t bytes_remaining = count;
uint32_t bytes_written = 0;
uint32_t param_table[5] = {0};
uint32_t result_table[4];
while (bytes_remaining > 0) {
uint32_t thisrun_bytes;
if (bytes_remaining >= lpc2000_info->cmd51_max_buffer)
thisrun_bytes = lpc2000_info->cmd51_max_buffer;
else if (bytes_remaining >= 1024)
thisrun_bytes = 1024;
else if ((bytes_remaining >= 512) || (!lpc2000_info->cmd51_can_256b))
thisrun_bytes = 512;
else
thisrun_bytes = 256;
/* Prepare sectors */
param_table[0] = first_sector;
param_table[1] = last_sector;
if (lpc2000_info->variant == lpc4300)
param_table[2] = lpc2000_info->lpc4300_bank;
else
param_table[2] = lpc2000_info->cclk;
int status_code = lpc2000_iap_call(bank, iap_working_area, 50, param_table, result_table);
switch (status_code) {
case ERROR_FLASH_OPERATION_FAILED:
retval = ERROR_FLASH_OPERATION_FAILED;
break;
case LPC2000_CMD_SUCCESS:
break;
case LPC2000_INVALID_SECTOR:
retval = ERROR_FLASH_SECTOR_INVALID;
break;
default:
LOG_WARNING("lpc2000 prepare sectors returned %i", status_code);
retval = ERROR_FLASH_OPERATION_FAILED;
break;
}
/* Exit if error occured */
if (retval != ERROR_OK)
break;
if (bytes_remaining >= thisrun_bytes) {
retval = target_write_buffer(bank->target, download_area->address, thisrun_bytes, buffer + bytes_written);
if (retval != ERROR_OK) {
retval = ERROR_FLASH_OPERATION_FAILED;
break;
}
} else {
uint8_t *last_buffer = malloc(thisrun_bytes);
memcpy(last_buffer, buffer + bytes_written, bytes_remaining);
memset(last_buffer + bytes_remaining, 0xff, thisrun_bytes - bytes_remaining);
target_write_buffer(bank->target, download_area->address, thisrun_bytes, last_buffer);
free(last_buffer);
}
LOG_DEBUG("writing 0x%" PRIx32 " bytes to address 0x%" PRIx32, thisrun_bytes,
bank->base + offset + bytes_written);
/* Write data */
param_table[0] = bank->base + offset + bytes_written;
param_table[1] = download_area->address;
param_table[2] = thisrun_bytes;
param_table[3] = lpc2000_info->cclk;
status_code = lpc2000_iap_call(bank, iap_working_area, 51, param_table, result_table);
switch (status_code) {
case ERROR_FLASH_OPERATION_FAILED:
retval = ERROR_FLASH_OPERATION_FAILED;
break;
case LPC2000_CMD_SUCCESS:
break;
case LPC2000_INVALID_SECTOR:
retval = ERROR_FLASH_SECTOR_INVALID;
break;
default:
LOG_WARNING("lpc2000 returned %i", status_code);
retval = ERROR_FLASH_OPERATION_FAILED;
break;
}
/* Exit if error occured */
if (retval != ERROR_OK)
break;
if (bytes_remaining > thisrun_bytes)
bytes_remaining -= thisrun_bytes;
else
bytes_remaining = 0;
bytes_written += thisrun_bytes;
}
target_free_working_area(target, iap_working_area);
target_free_working_area(target, download_area);
return retval;
}
static int lpc2000_probe(struct flash_bank *bank)
{
/* we can't probe on an lpc2000 if this is an lpc2xxx, it has the configured flash */
return ERROR_OK;
}
static int lpc2000_erase_check(struct flash_bank *bank)
{
if (bank->target->state != TARGET_HALTED) {
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
return lpc2000_iap_blank_check(bank, 0, bank->num_sectors - 1);
}
static int lpc2000_protect_check(struct flash_bank *bank)
{
/* sectors are always protected */
return ERROR_OK;
}
static int get_lpc2000_info(struct flash_bank *bank, char *buf, int buf_size)
{
struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
snprintf(buf, buf_size, "lpc2000 flash driver variant: %i, clk: %" PRIi32 "kHz", lpc2000_info->variant,
lpc2000_info->cclk);
return ERROR_OK;
}
COMMAND_HANDLER(lpc2000_handle_part_id_command)
{
if (CMD_ARGC < 1)
return ERROR_COMMAND_SYNTAX_ERROR;
struct flash_bank *bank;
int retval = CALL_COMMAND_HANDLER(flash_command_get_bank, 0, &bank);
if (ERROR_OK != retval)
return retval;
if (bank->target->state != TARGET_HALTED) {
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
uint32_t param_table[5] = {0};
uint32_t result_table[4];
struct working_area *iap_working_area;
retval = lpc2000_iap_working_area_init(bank, &iap_working_area);
if (retval != ERROR_OK)
return retval;
int status_code = lpc2000_iap_call(bank, iap_working_area, 54, param_table, result_table);
if (status_code != 0x0) {
if (status_code == ERROR_FLASH_OPERATION_FAILED) {
command_print(CMD_CTX, "no sufficient working area specified, can't access LPC2000 IAP interface");
} else
command_print(CMD_CTX, "lpc2000 IAP returned status code %i", status_code);
} else
command_print(CMD_CTX, "lpc2000 part id: 0x%8.8" PRIx32, result_table[0]);
return retval;
}
static const struct command_registration lpc2000_exec_command_handlers[] = {
{
.name = "part_id",
.handler = lpc2000_handle_part_id_command,
.mode = COMMAND_EXEC,
.help = "print part id of lpc2000 flash bank <num>",
.usage = "<bank>",
},
COMMAND_REGISTRATION_DONE
};
static const struct command_registration lpc2000_command_handlers[] = {
{
.name = "lpc2000",
.mode = COMMAND_ANY,
.help = "lpc2000 flash command group",
.usage = "",
.chain = lpc2000_exec_command_handlers,
},
COMMAND_REGISTRATION_DONE
};
struct flash_driver lpc2000_flash = {
.name = "lpc2000",
.commands = lpc2000_command_handlers,
.flash_bank_command = lpc2000_flash_bank_command,
.erase = lpc2000_erase,
.protect = lpc2000_protect,
.write = lpc2000_write,
.read = default_flash_read,
.probe = lpc2000_probe,
.auto_probe = lpc2000_probe,
.erase_check = lpc2000_erase_check,
.protect_check = lpc2000_protect_check,
.info = get_lpc2000_info,
};
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