136 lines
4.3 KiB
C
136 lines
4.3 KiB
C
/***************************************************************************
|
|
* Copyright (C) 2007, 2008 by Ben Dooks *
|
|
* ben@fluff.org *
|
|
* *
|
|
* 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. *
|
|
***************************************************************************/
|
|
|
|
/*
|
|
* S3C24XX Series OpenOCD NAND Flash controller support.
|
|
*
|
|
* Many thanks to Simtec Electronics for sponsoring this work.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "s3c24xx_nand.h"
|
|
|
|
|
|
S3C24XX_DEVICE_COMMAND()
|
|
{
|
|
struct s3c24xx_nand_controller *s3c24xx_info;
|
|
|
|
s3c24xx_info = malloc(sizeof(struct s3c24xx_nand_controller));
|
|
if (s3c24xx_info == NULL) {
|
|
LOG_ERROR("no memory for nand controller\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
nand->controller_priv = s3c24xx_info;
|
|
|
|
s3c24xx_info->target = get_target(CMD_ARGV[1]);
|
|
if (s3c24xx_info->target == NULL) {
|
|
LOG_ERROR("target '%s' not defined", CMD_ARGV[1]);
|
|
return ERROR_COMMAND_SYNTAX_ERROR;
|
|
}
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
int s3c24xx_register_commands(struct command_context *cmd_ctx)
|
|
{
|
|
return ERROR_OK;
|
|
}
|
|
|
|
int s3c24xx_reset(struct nand_device *nand)
|
|
{
|
|
struct s3c24xx_nand_controller *s3c24xx_info = nand->controller_priv;
|
|
struct target *target = s3c24xx_info->target;
|
|
|
|
if (target->state != TARGET_HALTED) {
|
|
LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
|
|
return ERROR_NAND_OPERATION_FAILED;
|
|
}
|
|
|
|
target_write_u32(target, s3c24xx_info->cmd, 0xff);
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
int s3c24xx_command(struct nand_device *nand, uint8_t command)
|
|
{
|
|
struct s3c24xx_nand_controller *s3c24xx_info = nand->controller_priv;
|
|
struct target *target = s3c24xx_info->target;
|
|
|
|
if (target->state != TARGET_HALTED) {
|
|
LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
|
|
return ERROR_NAND_OPERATION_FAILED;
|
|
}
|
|
|
|
target_write_u16(target, s3c24xx_info->cmd, command);
|
|
return ERROR_OK;
|
|
}
|
|
|
|
|
|
int s3c24xx_address(struct nand_device *nand, uint8_t address)
|
|
{
|
|
struct s3c24xx_nand_controller *s3c24xx_info = nand->controller_priv;
|
|
struct target *target = s3c24xx_info->target;
|
|
|
|
if (target->state != TARGET_HALTED) {
|
|
LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
|
|
return ERROR_NAND_OPERATION_FAILED;
|
|
}
|
|
|
|
target_write_u16(target, s3c24xx_info->addr, address);
|
|
return ERROR_OK;
|
|
}
|
|
|
|
int s3c24xx_write_data(struct nand_device *nand, uint16_t data)
|
|
{
|
|
struct s3c24xx_nand_controller *s3c24xx_info = nand->controller_priv;
|
|
struct target *target = s3c24xx_info->target;
|
|
|
|
if (target->state != TARGET_HALTED) {
|
|
LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
|
|
return ERROR_NAND_OPERATION_FAILED;
|
|
}
|
|
|
|
target_write_u8(target, s3c24xx_info->data, data);
|
|
return ERROR_OK;
|
|
}
|
|
|
|
int s3c24xx_read_data(struct nand_device *nand, void *data)
|
|
{
|
|
struct s3c24xx_nand_controller *s3c24xx_info = nand->controller_priv;
|
|
struct target *target = s3c24xx_info->target;
|
|
|
|
if (target->state != TARGET_HALTED) {
|
|
LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
|
|
return ERROR_NAND_OPERATION_FAILED;
|
|
}
|
|
|
|
target_read_u8(target, s3c24xx_info->data, data);
|
|
return ERROR_OK;
|
|
}
|
|
|
|
int s3c24xx_controller_ready(struct nand_device *nand, int timeout)
|
|
{
|
|
return 1;
|
|
}
|