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 "s3c24xx_nand.h"
34 S3C24XX_DEVICE_COMMAND()
36 struct s3c24xx_nand_controller
*s3c24xx_info
;
38 s3c24xx_info
= malloc(sizeof(struct s3c24xx_nand_controller
));
39 if (s3c24xx_info
== NULL
) {
40 LOG_ERROR("no memory for nand controller\n");
44 nand
->controller_priv
= s3c24xx_info
;
46 s3c24xx_info
->target
= get_target(args
[1]);
47 if (s3c24xx_info
->target
== NULL
) {
48 LOG_ERROR("target '%s' not defined", args
[1]);
49 return ERROR_COMMAND_SYNTAX_ERROR
;
55 int s3c24xx_register_commands(struct command_context
*cmd_ctx
)
60 int s3c24xx_reset(struct nand_device
*nand
)
62 struct s3c24xx_nand_controller
*s3c24xx_info
= nand
->controller_priv
;
63 struct target
*target
= s3c24xx_info
->target
;
65 if (target
->state
!= TARGET_HALTED
) {
66 LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
67 return ERROR_NAND_OPERATION_FAILED
;
70 target_write_u32(target
, s3c24xx_info
->cmd
, 0xff);
75 int s3c24xx_command(struct nand_device
*nand
, uint8_t command
)
77 struct s3c24xx_nand_controller
*s3c24xx_info
= nand
->controller_priv
;
78 struct target
*target
= s3c24xx_info
->target
;
80 if (target
->state
!= TARGET_HALTED
) {
81 LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
82 return ERROR_NAND_OPERATION_FAILED
;
85 target_write_u16(target
, s3c24xx_info
->cmd
, command
);
90 int s3c24xx_address(struct nand_device
*nand
, uint8_t address
)
92 struct s3c24xx_nand_controller
*s3c24xx_info
= nand
->controller_priv
;
93 struct target
*target
= s3c24xx_info
->target
;
95 if (target
->state
!= TARGET_HALTED
) {
96 LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
97 return ERROR_NAND_OPERATION_FAILED
;
100 target_write_u16(target
, s3c24xx_info
->addr
, address
);
104 int s3c24xx_write_data(struct nand_device
*nand
, uint16_t data
)
106 struct s3c24xx_nand_controller
*s3c24xx_info
= nand
->controller_priv
;
107 struct target
*target
= s3c24xx_info
->target
;
109 if (target
->state
!= TARGET_HALTED
) {
110 LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
111 return ERROR_NAND_OPERATION_FAILED
;
114 target_write_u8(target
, s3c24xx_info
->data
, data
);
118 int s3c24xx_read_data(struct nand_device
*nand
, void *data
)
120 struct s3c24xx_nand_controller
*s3c24xx_info
= nand
->controller_priv
;
121 struct target
*target
= s3c24xx_info
->target
;
123 if (target
->state
!= TARGET_HALTED
) {
124 LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
125 return ERROR_NAND_OPERATION_FAILED
;
128 target_read_u8(target
, s3c24xx_info
->data
, data
);
132 int s3c24xx_controller_ready(struct nand_device
*nand
, int timeout
)