command_handler: change 'args' to CMD_ARGV
[openocd.git] / src / flash / s3c24xx_nand.c
1 /***************************************************************************
2 * Copyright (C) 2007, 2008 by Ben Dooks *
3 * ben@fluff.org *
4 * *
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. *
9 * *
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. *
14 * *
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 ***************************************************************************/
20
21 /*
22 * S3C24XX Series OpenOCD NAND Flash controller support.
23 *
24 * Many thanks to Simtec Electronics for sponsoring this work.
25 */
26
27 #ifdef HAVE_CONFIG_H
28 #include "config.h"
29 #endif
30
31 #include "s3c24xx_nand.h"
32
33
34 S3C24XX_DEVICE_COMMAND()
35 {
36 struct s3c24xx_nand_controller *s3c24xx_info;
37
38 s3c24xx_info = malloc(sizeof(struct s3c24xx_nand_controller));
39 if (s3c24xx_info == NULL) {
40 LOG_ERROR("no memory for nand controller\n");
41 return -ENOMEM;
42 }
43
44 nand->controller_priv = s3c24xx_info;
45
46 s3c24xx_info->target = get_target(CMD_ARGV[1]);
47 if (s3c24xx_info->target == NULL) {
48 LOG_ERROR("target '%s' not defined", CMD_ARGV[1]);
49 return ERROR_COMMAND_SYNTAX_ERROR;
50 }
51
52 return ERROR_OK;
53 }
54
55 int s3c24xx_register_commands(struct command_context *cmd_ctx)
56 {
57 return ERROR_OK;
58 }
59
60 int s3c24xx_reset(struct nand_device *nand)
61 {
62 struct s3c24xx_nand_controller *s3c24xx_info = nand->controller_priv;
63 struct target *target = s3c24xx_info->target;
64
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;
68 }
69
70 target_write_u32(target, s3c24xx_info->cmd, 0xff);
71
72 return ERROR_OK;
73 }
74
75 int s3c24xx_command(struct nand_device *nand, uint8_t command)
76 {
77 struct s3c24xx_nand_controller *s3c24xx_info = nand->controller_priv;
78 struct target *target = s3c24xx_info->target;
79
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;
83 }
84
85 target_write_u16(target, s3c24xx_info->cmd, command);
86 return ERROR_OK;
87 }
88
89
90 int s3c24xx_address(struct nand_device *nand, uint8_t address)
91 {
92 struct s3c24xx_nand_controller *s3c24xx_info = nand->controller_priv;
93 struct target *target = s3c24xx_info->target;
94
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;
98 }
99
100 target_write_u16(target, s3c24xx_info->addr, address);
101 return ERROR_OK;
102 }
103
104 int s3c24xx_write_data(struct nand_device *nand, uint16_t data)
105 {
106 struct s3c24xx_nand_controller *s3c24xx_info = nand->controller_priv;
107 struct target *target = s3c24xx_info->target;
108
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;
112 }
113
114 target_write_u8(target, s3c24xx_info->data, data);
115 return ERROR_OK;
116 }
117
118 int s3c24xx_read_data(struct nand_device *nand, void *data)
119 {
120 struct s3c24xx_nand_controller *s3c24xx_info = nand->controller_priv;
121 struct target *target = s3c24xx_info->target;
122
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;
126 }
127
128 target_read_u8(target, s3c24xx_info->data, data);
129 return ERROR_OK;
130 }
131
132 int s3c24xx_controller_ready(struct nand_device *nand, int timeout)
133 {
134 return 1;
135 }