1 /***************************************************************************
2 * Copyright (C) 2007, 2008 by Ben Dooks *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
22 * S3C24XX Series OpenOCD NAND Flash controller support.
24 * Many thanks to Simtec Electronics for sponsoring this work.
31 #include "replacements.h"
38 #include "s3c24xx_nand.h"
41 s3c24xx_nand_controller_t *
42 s3c24xx_nand_device_command(struct command_context_s *cmd_ctx, char *cmd,
43 char **args, int argc,
44 struct nand_device_s *device)
46 s3c24xx_nand_controller_t *s3c24xx_info;
48 s3c24xx_info = malloc(sizeof(s3c24xx_nand_controller_t));
49 if (s3c24xx_info == NULL) {
50 LOG_ERROR("no memory for nand controller\n");
54 device->controller_priv = s3c24xx_info;
56 s3c24xx_info->target = get_target_by_num(strtoul(args[1], NULL, 0));
57 if (s3c24xx_info->target == NULL) {
58 LOG_ERROR("no target '%s' configured", args[1]);
65 int s3c24xx_register_commands(struct command_context_s *cmd_ctx)
70 int s3c24xx_reset(struct nand_device_s *device)
72 s3c24xx_nand_controller_t *s3c24xx_info = device->controller_priv;
73 target_t *target = s3c24xx_info->target;
75 if (target->state != TARGET_HALTED) {
76 LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
77 return ERROR_NAND_OPERATION_FAILED;
80 target_write_u32(target, s3c24xx_info->cmd, 0xff);
85 int s3c24xx_command(struct nand_device_s *device, u8 command)
87 s3c24xx_nand_controller_t *s3c24xx_info = device->controller_priv;
88 target_t *target = s3c24xx_info->target;
90 if (target->state != TARGET_HALTED) {
91 LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
92 return ERROR_NAND_OPERATION_FAILED;
95 target_write_u16(target, s3c24xx_info->cmd, command);
100 int s3c24xx_address(struct nand_device_s *device, u8 address)
102 s3c24xx_nand_controller_t *s3c24xx_info = device->controller_priv;
103 target_t *target = s3c24xx_info->target;
105 if (target->state != TARGET_HALTED) {
106 LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
107 return ERROR_NAND_OPERATION_FAILED;
110 target_write_u16(target, s3c24xx_info->addr, address);
114 int s3c24xx_write_data(struct nand_device_s *device, u16 data)
116 s3c24xx_nand_controller_t *s3c24xx_info = device->controller_priv;
117 target_t *target = s3c24xx_info->target;
119 if (target->state != TARGET_HALTED) {
120 LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
121 return ERROR_NAND_OPERATION_FAILED;
124 target_write_u8(target, s3c24xx_info->data, data);
128 int s3c24xx_read_data(struct nand_device_s *device, void *data)
130 s3c24xx_nand_controller_t *s3c24xx_info = device->controller_priv;
131 target_t *target = s3c24xx_info->target;
133 if (target->state != TARGET_HALTED) {
134 LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
135 return ERROR_NAND_OPERATION_FAILED;
138 target_read_u8(target, s3c24xx_info->data, data);
142 int s3c24xx_controller_ready(struct nand_device_s *device, int timeout)