1 /* src/flash/s3c24xx_nand.c
3 * S3C24XX Series OpenOCD NAND Flash controller support.
5 * Copyright 2007,2008 Ben Dooks <ben@fluff.org>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * Many thanks to Simtec Electronics for sponsoring this work.
19 #include "replacements.h"
26 #include "s3c24xx_nand.h"
29 s3c24xx_nand_controller_t
*
30 s3c24xx_nand_device_command(struct command_context_s
*cmd_ctx
, char *cmd
,
31 char **args
, int argc
,
32 struct nand_device_s
*device
)
34 s3c24xx_nand_controller_t
*s3c24xx_info
;
36 s3c24xx_info
= malloc(sizeof(s3c24xx_nand_controller_t
));
37 if (s3c24xx_info
== NULL
) {
38 ERROR("no memory for nand controller\n");
42 device
->controller_priv
= s3c24xx_info
;
44 s3c24xx_info
->target
= get_target_by_num(strtoul(args
[1], NULL
, 0));
45 if (s3c24xx_info
->target
== NULL
) {
46 ERROR("no target '%s' configured", args
[1]);
53 int s3c24xx_register_commands(struct command_context_s
*cmd_ctx
)
58 int s3c24xx_reset(struct nand_device_s
*device
)
60 s3c24xx_nand_controller_t
*s3c24xx_info
= device
->controller_priv
;
61 target_t
*target
= s3c24xx_info
->target
;
63 if (target
->state
!= TARGET_HALTED
) {
64 ERROR("target must be halted to use S3C24XX NAND flash controller");
65 return ERROR_NAND_OPERATION_FAILED
;
68 target_write_u32(target
, s3c24xx_info
->cmd
, 0xff);
73 int s3c24xx_command(struct nand_device_s
*device
, u8 command
)
75 s3c24xx_nand_controller_t
*s3c24xx_info
= device
->controller_priv
;
76 target_t
*target
= s3c24xx_info
->target
;
78 if (target
->state
!= TARGET_HALTED
) {
79 ERROR("target must be halted to use S3C24XX NAND flash controller");
80 return ERROR_NAND_OPERATION_FAILED
;
83 target_write_u16(target
, s3c24xx_info
->cmd
, command
);
88 int s3c24xx_address(struct nand_device_s
*device
, u8 address
)
90 s3c24xx_nand_controller_t
*s3c24xx_info
= device
->controller_priv
;
91 target_t
*target
= s3c24xx_info
->target
;
93 if (target
->state
!= TARGET_HALTED
) {
94 ERROR("target must be halted to use S3C24XX NAND flash controller");
95 return ERROR_NAND_OPERATION_FAILED
;
98 target_write_u16(target
, s3c24xx_info
->addr
, address
);
102 int s3c24xx_write_data(struct nand_device_s
*device
, u16 data
)
104 s3c24xx_nand_controller_t
*s3c24xx_info
= device
->controller_priv
;
105 target_t
*target
= s3c24xx_info
->target
;
107 if (target
->state
!= TARGET_HALTED
) {
108 ERROR("target must be halted to use S3C24XX NAND flash controller");
109 return ERROR_NAND_OPERATION_FAILED
;
112 target_write_u8(target
, s3c24xx_info
->data
, data
);
116 int s3c24xx_read_data(struct nand_device_s
*device
, void *data
)
118 s3c24xx_nand_controller_t
*s3c24xx_info
= device
->controller_priv
;
119 target_t
*target
= s3c24xx_info
->target
;
121 if (target
->state
!= TARGET_HALTED
) {
122 ERROR("target must be halted to use S3C24XX NAND flash controller");
123 return ERROR_NAND_OPERATION_FAILED
;
126 target_read_u8(target
, s3c24xx_info
->data
, data
);
130 int s3c24xx_controller_ready(struct nand_device_s
*device
, int timeout
)
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