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 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
19 ***************************************************************************/
22 * S3C24XX Series OpenOCD NAND Flash controller support.
24 * Many thanks to Simtec Electronics for sponsoring this work.
33 S3C24XX_DEVICE_COMMAND()
37 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");
44 nand
->controller_priv
= s3c24xx_info
;
50 int s3c24xx_reset(struct nand_device
*nand
)
52 struct s3c24xx_nand_controller
*s3c24xx_info
= nand
->controller_priv
;
53 struct target
*target
= nand
->target
;
55 if (target
->state
!= TARGET_HALTED
) {
56 LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
57 return ERROR_NAND_OPERATION_FAILED
;
60 target_write_u32(target
, s3c24xx_info
->cmd
, 0xff);
65 int s3c24xx_command(struct nand_device
*nand
, uint8_t command
)
67 struct s3c24xx_nand_controller
*s3c24xx_info
= nand
->controller_priv
;
68 struct target
*target
= nand
->target
;
70 if (target
->state
!= TARGET_HALTED
) {
71 LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
72 return ERROR_NAND_OPERATION_FAILED
;
75 target_write_u16(target
, s3c24xx_info
->cmd
, command
);
79 int s3c24xx_address(struct nand_device
*nand
, uint8_t address
)
81 struct s3c24xx_nand_controller
*s3c24xx_info
= nand
->controller_priv
;
82 struct target
*target
= nand
->target
;
84 if (target
->state
!= TARGET_HALTED
) {
85 LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
86 return ERROR_NAND_OPERATION_FAILED
;
89 target_write_u16(target
, s3c24xx_info
->addr
, address
);
93 int s3c24xx_write_data(struct nand_device
*nand
, uint16_t data
)
95 struct s3c24xx_nand_controller
*s3c24xx_info
= nand
->controller_priv
;
96 struct target
*target
= nand
->target
;
98 if (target
->state
!= TARGET_HALTED
) {
99 LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
100 return ERROR_NAND_OPERATION_FAILED
;
103 target_write_u8(target
, s3c24xx_info
->data
, data
);
107 int s3c24xx_read_data(struct nand_device
*nand
, void *data
)
109 struct s3c24xx_nand_controller
*s3c24xx_info
= nand
->controller_priv
;
110 struct target
*target
= nand
->target
;
112 if (target
->state
!= TARGET_HALTED
) {
113 LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
114 return ERROR_NAND_OPERATION_FAILED
;
117 target_read_u8(target
, s3c24xx_info
->data
, data
);