1 /***************************************************************************
2 * Copyright (C) 2009 by Marvell Semiconductors, Inc. *
3 * Written by Nicolas Pitre <nico at marvell.com> *
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 * NAND controller interface for Marvell Orion/Kirkwood SoCs.
29 #include "arm_nandio.h"
33 typedef struct orion_nand_controller_s
35 struct target_s
*target
;
37 struct arm_nand_data io
;
42 } orion_nand_controller_t
;
44 #define CHECK_HALTED \
46 if (target->state != TARGET_HALTED) { \
47 LOG_ERROR("NAND flash access requires halted target"); \
48 return ERROR_NAND_OPERATION_FAILED; \
52 static int orion_nand_command(struct nand_device_s
*device
, uint8_t command
)
54 orion_nand_controller_t
*hw
= device
->controller_priv
;
55 target_t
*target
= hw
->target
;
58 target_write_u8(target
, hw
->cmd
, command
);
62 static int orion_nand_address(struct nand_device_s
*device
, uint8_t address
)
64 orion_nand_controller_t
*hw
= device
->controller_priv
;
65 target_t
*target
= hw
->target
;
68 target_write_u8(target
, hw
->addr
, address
);
72 static int orion_nand_read(struct nand_device_s
*device
, void *data
)
74 orion_nand_controller_t
*hw
= device
->controller_priv
;
75 target_t
*target
= hw
->target
;
78 target_read_u8(target
, hw
->data
, data
);
82 static int orion_nand_write(struct nand_device_s
*device
, uint16_t data
)
84 orion_nand_controller_t
*hw
= device
->controller_priv
;
85 target_t
*target
= hw
->target
;
88 target_write_u8(target
, hw
->data
, data
);
92 static int orion_nand_slow_block_write(struct nand_device_s
*device
, uint8_t *data
, int size
)
95 orion_nand_write(device
, *data
++);
99 static int orion_nand_fast_block_write(struct nand_device_s
*device
, uint8_t *data
, int size
)
101 orion_nand_controller_t
*hw
= device
->controller_priv
;
104 hw
->io
.chunk_size
= device
->page_size
;
106 retval
= arm_nandwrite(&hw
->io
, data
, size
);
107 if (retval
== ERROR_NAND_NO_BUFFER
)
108 retval
= orion_nand_slow_block_write(device
, data
, size
);
113 static int orion_nand_reset(struct nand_device_s
*device
)
115 return orion_nand_command(device
, NAND_CMD_RESET
);
118 static int orion_nand_controller_ready(struct nand_device_s
*device
, int timeout
)
123 static int orion_nand_register_commands(struct command_context_s
*cmd_ctx
)
128 int orion_nand_device_command(struct command_context_s
*cmd_ctx
, char *cmd
,
129 char **args
, int argc
,
130 struct nand_device_s
*device
)
132 orion_nand_controller_t
*hw
;
137 LOG_ERROR("arguments must be: <target_id> <NAND_address>\n");
138 return ERROR_NAND_DEVICE_INVALID
;
141 hw
= calloc(1, sizeof(*hw
));
143 LOG_ERROR("no memory for nand controller\n");
144 return ERROR_NAND_DEVICE_INVALID
;
147 device
->controller_priv
= hw
;
148 hw
->target
= get_target(args
[1]);
150 LOG_ERROR("target '%s' not defined", args
[1]);
152 return ERROR_NAND_DEVICE_INVALID
;
155 base
= strtoul(args
[2], NULL
, 0);
160 hw
->cmd
= base
+ (1 << cle
);
161 hw
->addr
= base
+ (1 << ale
);
163 hw
->io
.target
= hw
->target
;
164 hw
->io
.data
= hw
->data
;
169 static int orion_nand_init(struct nand_device_s
*device
)
174 nand_flash_controller_t orion_nand_controller
=
177 .command
= orion_nand_command
,
178 .address
= orion_nand_address
,
179 .read_data
= orion_nand_read
,
180 .write_data
= orion_nand_write
,
181 .write_block_data
= orion_nand_fast_block_write
,
182 .reset
= orion_nand_reset
,
183 .controller_ready
= orion_nand_controller_ready
,
184 .nand_device_command
= orion_nand_device_command
,
185 .register_commands
= orion_nand_register_commands
,
186 .init
= orion_nand_init
,
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