120 lines
3.9 KiB
C
120 lines
3.9 KiB
C
/***************************************************************************
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* Copyright (C) 2007, 2008 by Ben Dooks *
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* ben@fluff.org *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
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***************************************************************************/
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/*
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* S3C24XX Series OpenOCD NAND Flash controller support.
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*
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* Many thanks to Simtec Electronics for sponsoring this work.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "s3c24xx.h"
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S3C24XX_DEVICE_COMMAND()
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{
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*info = NULL;
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struct s3c24xx_nand_controller *s3c24xx_info;
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s3c24xx_info = malloc(sizeof(struct s3c24xx_nand_controller));
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if (s3c24xx_info == NULL) {
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LOG_ERROR("no memory for nand controller");
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return -ENOMEM;
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}
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nand->controller_priv = s3c24xx_info;
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*info = s3c24xx_info;
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return ERROR_OK;
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}
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int s3c24xx_reset(struct nand_device *nand)
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{
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struct s3c24xx_nand_controller *s3c24xx_info = nand->controller_priv;
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struct target *target = nand->target;
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if (target->state != TARGET_HALTED) {
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LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
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return ERROR_NAND_OPERATION_FAILED;
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}
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target_write_u32(target, s3c24xx_info->cmd, 0xff);
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return ERROR_OK;
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}
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int s3c24xx_command(struct nand_device *nand, uint8_t command)
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{
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struct s3c24xx_nand_controller *s3c24xx_info = nand->controller_priv;
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struct target *target = nand->target;
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if (target->state != TARGET_HALTED) {
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LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
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return ERROR_NAND_OPERATION_FAILED;
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}
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target_write_u16(target, s3c24xx_info->cmd, command);
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return ERROR_OK;
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}
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int s3c24xx_address(struct nand_device *nand, uint8_t address)
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{
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struct s3c24xx_nand_controller *s3c24xx_info = nand->controller_priv;
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struct target *target = nand->target;
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if (target->state != TARGET_HALTED) {
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LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
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return ERROR_NAND_OPERATION_FAILED;
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}
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target_write_u16(target, s3c24xx_info->addr, address);
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return ERROR_OK;
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}
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int s3c24xx_write_data(struct nand_device *nand, uint16_t data)
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{
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struct s3c24xx_nand_controller *s3c24xx_info = nand->controller_priv;
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struct target *target = nand->target;
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if (target->state != TARGET_HALTED) {
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LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
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return ERROR_NAND_OPERATION_FAILED;
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}
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target_write_u8(target, s3c24xx_info->data, data);
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return ERROR_OK;
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}
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int s3c24xx_read_data(struct nand_device *nand, void *data)
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{
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struct s3c24xx_nand_controller *s3c24xx_info = nand->controller_priv;
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struct target *target = nand->target;
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if (target->state != TARGET_HALTED) {
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LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
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return ERROR_NAND_OPERATION_FAILED;
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}
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target_read_u8(target, s3c24xx_info->data, data);
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return ERROR_OK;
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}
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