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/***************************************************************************
* 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.h"
S3C24XX_DEVICE_COMMAND()
{
*info = NULL;
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;
}
*info = s3c24xx_info;
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;
}
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