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openocd/src/flash/lpc2000.c

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/***************************************************************************
* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
* 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 "lpc2000.h"
#include "flash.h"
#include "target.h"
#include "log.h"
#include "armv4_5.h"
#include "algorithm.h"
#include "binarybuffer.h"
#include <stdlib.h>
#include <string.h>
/* flash programming support for Philips LPC2xxx devices
* 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
*/
int lpc2000_register_commands(struct command_context_s *cmd_ctx);
int lpc2000_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank);
int lpc2000_erase(struct flash_bank_s *bank, int first, int last);
int lpc2000_protect(struct flash_bank_s *bank, int set, int first, int last);
int lpc2000_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count);
int lpc2000_probe(struct flash_bank_s *bank);
int lpc2000_erase_check(struct flash_bank_s *bank);
int lpc2000_protect_check(struct flash_bank_s *bank);
int lpc2000_info(struct flash_bank_s *bank, char *buf, int buf_size);
int lpc2000_handle_part_id_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
flash_driver_t lpc2000_flash =
{
.name = "lpc2000",
.register_commands = lpc2000_register_commands,
.flash_bank_command = lpc2000_flash_bank_command,
.erase = lpc2000_erase,
.protect = lpc2000_protect,
.write = lpc2000_write,
.probe = lpc2000_probe,
.auto_probe = lpc2000_probe,
.erase_check = lpc2000_erase_check,
.protect_check = lpc2000_protect_check,
.info = lpc2000_info
};
int lpc2000_register_commands(struct command_context_s *cmd_ctx)
{
command_t *lpc2000_cmd = register_command(cmd_ctx, NULL, "lpc2000", NULL, COMMAND_ANY, NULL);
register_command(cmd_ctx, lpc2000_cmd, "part_id", lpc2000_handle_part_id_command, COMMAND_EXEC,
"print part id of lpc2000 flash bank <num>");
return ERROR_OK;
}
int lpc2000_build_sector_list(struct flash_bank_s *bank)
{
lpc2000_flash_bank_t *lpc2000_info = bank->driver_priv;
/* default to a 4096 write buffer */
lpc2000_info->cmd51_max_buffer = 4096;
if (lpc2000_info->variant == 1)
{
int i = 0;
u32 offset = 0;
/* variant 1 has different layout for 128kb and 256kb flashes */
if (bank->size == 128 * 1024)
{
bank->num_sectors = 16;
bank->sectors = malloc(sizeof(flash_sector_t) * 16);
for (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(flash_sector_t) * 18);
for (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 (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 (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
{
ERROR("BUG: unknown bank->size encountered");
exit(-1);
}
}
else if (lpc2000_info->variant == 2)
{
int num_sectors;
int i;
u32 offset = 0;
/* variant 2 has a uniform layout, only number of sectors differs */
switch (bank->size)
{
case 4 * 1024:
lpc2000_info->cmd51_max_buffer = 1024;
num_sectors = 1;
break;
case 8 * 1024:
lpc2000_info->cmd51_max_buffer = 1024;
num_sectors = 2;
break;
case 16 * 1024:
num_sectors = 4;
break;
case 32 * 1024:
num_sectors = 8;
break;
case 64 * 1024:
num_sectors = 9;
break;
case 128 * 1024:
num_sectors = 11;
break;
case 256 * 1024:
num_sectors = 15;
break;
case 512 * 1024:
case 500 * 1024:
num_sectors = 27;
break;
default:
ERROR("BUG: unknown bank->size encountered");
exit(-1);
break;
}
bank->num_sectors = num_sectors;
bank->sectors = malloc(sizeof(flash_sector_t) * num_sectors);
for (i = 0; i < num_sectors; i++)
{
if ((i >= 0) && (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;
}
if ((i >= 8) && (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;
}
if ((i >= 22) && (i < 27))
{
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
{
ERROR("BUG: unknown lpc2000_info->variant encountered");
exit(-1);
}
return ERROR_OK;
}
/* call LPC2000 IAP function
* uses 172 bytes working area
* 0x0 to 0x7: jump gate (BX to thumb state, b -2 to wait)
* 0x8 to 0x1f: command parameter table
* 0x20 to 0x2b: command result table
* 0x2c to 0xac: stack (only 128b needed)
*/
int lpc2000_iap_call(flash_bank_t *bank, int code, u32 param_table[5], u32 result_table[2])
{
lpc2000_flash_bank_t *lpc2000_info = bank->driver_priv;
target_t *target = bank->target;
mem_param_t mem_params[2];
reg_param_t reg_params[5];
armv4_5_algorithm_t armv4_5_info;
u32 status_code;
/* regrab previously allocated working_area, or allocate a new one */
if (!lpc2000_info->iap_working_area)
{
u8 jump_gate[8];
/* make sure we have a working area */
if (target_alloc_working_area(target, 172, &lpc2000_info->iap_working_area) != ERROR_OK)
{
ERROR("no working area specified, can't write LPC2000 internal flash");
return ERROR_FLASH_OPERATION_FAILED;
}
/* write IAP code to working area */
target_buffer_set_u32(target, jump_gate, ARMV4_5_BX(12));
target_buffer_set_u32(target, jump_gate + 4, ARMV4_5_B(0xfffffe, 0));
target->type->write_memory(target, lpc2000_info->iap_working_area->address, 4, 2, jump_gate);
}
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;
/* command parameter table */
init_mem_param(&mem_params[0], lpc2000_info->iap_working_area->address + 8, 4 * 6, PARAM_OUT);
target_buffer_set_u32(target, mem_params[0].value, code);
target_buffer_set_u32(target, mem_params[0].value + 0x4, param_table[0]);
target_buffer_set_u32(target, mem_params[0].value + 0x8, param_table[1]);
target_buffer_set_u32(target, mem_params[0].value + 0xc, 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]);
init_reg_param(&reg_params[0], "r0", 32, PARAM_OUT);
buf_set_u32(reg_params[0].value, 0, 32, lpc2000_info->iap_working_area->address + 0x8);
/* command result table */
init_mem_param(&mem_params[1], lpc2000_info->iap_working_area->address + 0x20, 4 * 3, PARAM_IN);
init_reg_param(&reg_params[1], "r1", 32, PARAM_OUT);
buf_set_u32(reg_params[1].value, 0, 32, lpc2000_info->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, 0x7ffffff1);
/* IAP stack */
init_reg_param(&reg_params[3], "r13_svc", 32, PARAM_OUT);
buf_set_u32(reg_params[3].value, 0, 32, lpc2000_info->iap_working_area->address + 0xac);
/* return address */
init_reg_param(&reg_params[4], "lr_svc", 32, PARAM_OUT);
buf_set_u32(reg_params[4].value, 0, 32, lpc2000_info->iap_working_area->address + 0x4);
target->type->run_algorithm(target, 2, mem_params, 5, reg_params, lpc2000_info->iap_working_area->address, lpc2000_info->iap_working_area->address + 0x4, 10000, &armv4_5_info);
status_code = buf_get_u32(mem_params[1].value, 0, 32);
result_table[0] = target_buffer_get_u32(target, mem_params[1].value);
result_table[1] = target_buffer_get_u32(target, mem_params[1].value + 4);
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;
}
int lpc2000_iap_blank_check(struct flash_bank_s *bank, int first, int last)
{
u32 param_table[5];
u32 result_table[2];
int status_code;
int i;
if ((first < 0) || (last > bank->num_sectors))
return ERROR_FLASH_SECTOR_INVALID;
for (i = first; i <= last; i++)
{
/* check single sector */
param_table[0] = param_table[1] = i;
status_code = lpc2000_iap_call(bank, 53, param_table, result_table);
switch (status_code)
{
case ERROR_FLASH_OPERATION_FAILED:
return ERROR_FLASH_OPERATION_FAILED;
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:
return ERROR_FLASH_BUSY;
break;
default:
ERROR("BUG: unknown LPC2000 status code");
exit(-1);
}
}
return ERROR_OK;
}
/* flash bank lpc2000 <base> <size> 0 0 <target#> <lpc_variant> <cclk> [calc_checksum]
*/
int lpc2000_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct flash_bank_s *bank)
{
lpc2000_flash_bank_t *lpc2000_info;
if (argc < 8)
{
WARNING("incomplete flash_bank lpc2000 configuration");
return ERROR_FLASH_BANK_INVALID;
}
lpc2000_info = malloc(sizeof(lpc2000_flash_bank_t));
bank->driver_priv = lpc2000_info;
if (strcmp(args[6], "lpc2000_v1") == 0)
{
lpc2000_info->variant = 1;
lpc2000_info->cmd51_dst_boundary = 512;
lpc2000_info->cmd51_can_256b = 0;
lpc2000_info->cmd51_can_8192b = 1;
}
else if (strcmp(args[6], "lpc2000_v2") == 0)
{
lpc2000_info->variant = 2;
lpc2000_info->cmd51_dst_boundary = 256;
lpc2000_info->cmd51_can_256b = 1;
lpc2000_info->cmd51_can_8192b = 0;
}
else
{
ERROR("unknown LPC2000 variant");
free(lpc2000_info);
return ERROR_FLASH_BANK_INVALID;
}
lpc2000_info->iap_working_area = NULL;
lpc2000_info->cclk = strtoul(args[7], NULL, 0);
lpc2000_info->calc_checksum = 0;
lpc2000_build_sector_list(bank);
if (argc >= 9)
{
if (strcmp(args[8], "calc_checksum") == 0)
lpc2000_info->calc_checksum = 1;
}
return ERROR_OK;
}
int lpc2000_erase(struct flash_bank_s *bank, int first, int last)
{
lpc2000_flash_bank_t *lpc2000_info = bank->driver_priv;
u32 param_table[5];
u32 result_table[2];
int status_code;
param_table[0] = first;
param_table[1] = last;
param_table[2] = lpc2000_info->cclk;
/* Prepare sectors */
status_code = lpc2000_iap_call(bank, 50, param_table, result_table);
switch (status_code)
{
case ERROR_FLASH_OPERATION_FAILED:
return ERROR_FLASH_OPERATION_FAILED;
case LPC2000_CMD_SUCCESS:
break;
case LPC2000_INVALID_SECTOR:
return ERROR_FLASH_SECTOR_INVALID;
break;
default:
WARNING("lpc2000 prepare sectors returned %i", status_code);
return ERROR_FLASH_OPERATION_FAILED;
}
/* Erase sectors */
status_code = lpc2000_iap_call(bank, 52, param_table, result_table);
switch (status_code)
{
case ERROR_FLASH_OPERATION_FAILED:
return ERROR_FLASH_OPERATION_FAILED;
case LPC2000_CMD_SUCCESS:
break;
case LPC2000_INVALID_SECTOR:
return ERROR_FLASH_SECTOR_INVALID;
break;
default:
WARNING("lpc2000 erase sectors returned %i", status_code);
return ERROR_FLASH_OPERATION_FAILED;
}
return ERROR_OK;
}
int lpc2000_protect(struct flash_bank_s *bank, int set, int first, int last)
{
/* can't protect/unprotect on the lpc2000 */
return ERROR_OK;
}
int lpc2000_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
{
lpc2000_flash_bank_t *lpc2000_info = bank->driver_priv;
target_t *target = bank->target;
u32 dst_min_alignment;
u32 bytes_remaining = count;
u32 bytes_written = 0;
int first_sector = 0;
int last_sector = 0;
u32 param_table[5];
u32 result_table[2];
int status_code;
int i;
working_area_t *download_area;
if (bank->target->state != TARGET_HALTED)
{
return ERROR_TARGET_NOT_HALTED;
}
/* allocate a working area */
if (target_alloc_working_area(target, lpc2000_info->cmd51_max_buffer, &download_area) != ERROR_OK)
{
ERROR("no working area specified, can't write LPC2000 internal flash");
return ERROR_FLASH_OPERATION_FAILED;
}
if (offset + count > bank->size)
return ERROR_FLASH_DST_OUT_OF_BANK;
if (lpc2000_info->cmd51_can_256b)
dst_min_alignment = 256;
else
dst_min_alignment = 512;
if (offset % dst_min_alignment)
{
WARNING("offset 0x%x breaks required alignment 0x%x", offset, dst_min_alignment);
return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
}
for (i = 0; i < bank->num_sectors; i++)
{
if (offset >= bank->sectors[i].offset)
first_sector = i;
if (offset + CEIL(count, dst_min_alignment) * dst_min_alignment > bank->sectors[i].offset)
last_sector = i;
}
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)
{
u32 checksum = 0;
int i = 0;
for (i = 0; i < 8; i++)
{
DEBUG("0x%2.2x: 0x%8.8x", i * 4, buf_get_u32(buffer + (i * 4), 0, 32));
if (i != 5)
checksum += buf_get_u32(buffer + (i * 4), 0, 32);
}
checksum = 0 - checksum;
DEBUG("checksum: 0x%8.8x", checksum);
buf_set_u32(buffer + 0x14, 0, 32, checksum);
}
while (bytes_remaining > 0)
{
u32 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;
status_code = lpc2000_iap_call(bank, 50, param_table, result_table);
switch (status_code)
{
case ERROR_FLASH_OPERATION_FAILED:
return ERROR_FLASH_OPERATION_FAILED;
case LPC2000_CMD_SUCCESS:
break;
case LPC2000_INVALID_SECTOR:
return ERROR_FLASH_SECTOR_INVALID;
break;
default:
WARNING("lpc2000 prepare sectors returned %i", status_code);
return ERROR_FLASH_OPERATION_FAILED;
}
if (bytes_remaining >= thisrun_bytes)
{
if (target_write_buffer(bank->target, download_area->address, thisrun_bytes, buffer + bytes_written) != ERROR_OK)
{
target_free_working_area(target, download_area);
return ERROR_FLASH_OPERATION_FAILED;
}
}
else
{
u8 *last_buffer = malloc(thisrun_bytes);
int i;
memcpy(last_buffer, buffer + bytes_written, bytes_remaining);
for (i = bytes_remaining; i < thisrun_bytes; i++)
last_buffer[i] = 0xff;
target_write_buffer(bank->target, download_area->address, thisrun_bytes, last_buffer);
free(last_buffer);
}
DEBUG("writing 0x%x bytes to address 0x%x", 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, 51, param_table, result_table);
switch (status_code)
{
case ERROR_FLASH_OPERATION_FAILED:
return ERROR_FLASH_OPERATION_FAILED;
case LPC2000_CMD_SUCCESS:
break;
case LPC2000_INVALID_SECTOR:
return ERROR_FLASH_SECTOR_INVALID;
break;
default:
WARNING("lpc2000 returned %i", status_code);
return ERROR_FLASH_OPERATION_FAILED;
}
if (bytes_remaining > thisrun_bytes)
bytes_remaining -= thisrun_bytes;
else
bytes_remaining = 0;
bytes_written += thisrun_bytes;
}
target_free_working_area(target, download_area);
return ERROR_OK;
}
int lpc2000_probe(struct flash_bank_s *bank)
{
/* we can't probe on an lpc2000
* if this is an lpc2xxx, it has the configured flash
*/
return ERROR_OK;
}
int lpc2000_erase_check(struct flash_bank_s *bank)
{
if (bank->target->state != TARGET_HALTED)
{
return ERROR_TARGET_NOT_HALTED;
}
return lpc2000_iap_blank_check(bank, 0, bank->num_sectors - 1);
}
int lpc2000_protect_check(struct flash_bank_s *bank)
{
/* sectors are always protected */
return ERROR_OK;
}
int lpc2000_info(struct flash_bank_s *bank, char *buf, int buf_size)
{
lpc2000_flash_bank_t *lpc2000_info = bank->driver_priv;
snprintf(buf, buf_size, "lpc2000 flash driver variant: %i, clk: %i", lpc2000_info->variant, lpc2000_info->cclk);
return ERROR_OK;
}
int lpc2000_handle_part_id_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
flash_bank_t *bank;
u32 param_table[5];
u32 result_table[2];
int status_code;
lpc2000_flash_bank_t *lpc2000_info;
if (argc < 1)
{
command_print(cmd_ctx, "usage: lpc2000 part_id <num>");
return ERROR_OK;
}
bank = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
if (!bank)
{
command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
return ERROR_OK;
}
lpc2000_info = bank->driver_priv;
if (bank->target->state != TARGET_HALTED)
{
return ERROR_TARGET_NOT_HALTED;
}
if ((status_code = lpc2000_iap_call(bank, 54, param_table, result_table)) != 0x0)
{
if (status_code == ERROR_FLASH_OPERATION_FAILED)
{
command_print(cmd_ctx, "no sufficient working area specified, can't access LPC2000 IAP interface");
return ERROR_OK;
}
command_print(cmd_ctx, "lpc2000 IAP returned status code %i", status_code);
}
else
{
command_print(cmd_ctx, "lpc2000 part id: 0x%8.8x", result_table[0]);
}
return ERROR_OK;
}
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