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_nand_controller_t
*
35 s3c24xx_nand_device_command(struct command_context_s
*cmd_ctx
, char *cmd
,
36 char **args
, int argc
,
37 struct nand_device_s
*device
)
39 s3c24xx_nand_controller_t
*s3c24xx_info
;
41 s3c24xx_info
= malloc(sizeof(s3c24xx_nand_controller_t
));
42 if (s3c24xx_info
== NULL
) {
43 LOG_ERROR("no memory for nand controller\n");
47 device
->controller_priv
= s3c24xx_info
;
49 s3c24xx_info
->target
= get_target(args
[1]);
50 if (s3c24xx_info
->target
== NULL
) {
51 LOG_ERROR("target '%s' not defined", args
[1]);
58 int s3c24xx_register_commands(struct command_context_s
*cmd_ctx
)
63 int s3c24xx_reset(struct nand_device_s
*device
)
65 s3c24xx_nand_controller_t
*s3c24xx_info
= device
->controller_priv
;
66 target_t
*target
= s3c24xx_info
->target
;
68 if (target
->state
!= TARGET_HALTED
) {
69 LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
70 return ERROR_NAND_OPERATION_FAILED
;
73 target_write_u32(target
, s3c24xx_info
->cmd
, 0xff);
78 int s3c24xx_command(struct nand_device_s
*device
, uint8_t command
)
80 s3c24xx_nand_controller_t
*s3c24xx_info
= device
->controller_priv
;
81 target_t
*target
= s3c24xx_info
->target
;
83 if (target
->state
!= TARGET_HALTED
) {
84 LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
85 return ERROR_NAND_OPERATION_FAILED
;
88 target_write_u16(target
, s3c24xx_info
->cmd
, command
);
93 int s3c24xx_address(struct nand_device_s
*device
, uint8_t address
)
95 s3c24xx_nand_controller_t
*s3c24xx_info
= device
->controller_priv
;
96 target_t
*target
= s3c24xx_info
->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_u16(target
, s3c24xx_info
->addr
, address
);
107 int s3c24xx_write_data(struct nand_device_s
*device
, uint16_t data
)
109 s3c24xx_nand_controller_t
*s3c24xx_info
= device
->controller_priv
;
110 target_t
*target
= s3c24xx_info
->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_write_u8(target
, s3c24xx_info
->data
, data
);
121 int s3c24xx_read_data(struct nand_device_s
*device
, void *data
)
123 s3c24xx_nand_controller_t
*s3c24xx_info
= device
->controller_priv
;
124 target_t
*target
= s3c24xx_info
->target
;
126 if (target
->state
!= TARGET_HALTED
) {
127 LOG_ERROR("target must be halted to use S3C24XX NAND flash controller");
128 return ERROR_NAND_OPERATION_FAILED
;
131 target_read_u8(target
, s3c24xx_info
->data
, data
);
135 int s3c24xx_controller_ready(struct nand_device_s
*device
, int timeout
)
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