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.
31 #include <target/arm.h>
34 struct orion_nand_controller
36 struct target
*target
;
38 struct arm_nand_data io
;
45 #define CHECK_HALTED \
47 if (target->state != TARGET_HALTED) { \
48 LOG_ERROR("NAND flash access requires halted target"); \
49 return ERROR_NAND_OPERATION_FAILED; \
53 static int orion_nand_command(struct nand_device
*nand
, uint8_t command
)
55 struct orion_nand_controller
*hw
= nand
->controller_priv
;
56 struct target
*target
= hw
->target
;
59 target_write_u8(target
, hw
->cmd
, command
);
63 static int orion_nand_address(struct nand_device
*nand
, uint8_t address
)
65 struct orion_nand_controller
*hw
= nand
->controller_priv
;
66 struct target
*target
= hw
->target
;
69 target_write_u8(target
, hw
->addr
, address
);
73 static int orion_nand_read(struct nand_device
*nand
, void *data
)
75 struct orion_nand_controller
*hw
= nand
->controller_priv
;
76 struct target
*target
= hw
->target
;
79 target_read_u8(target
, hw
->data
, data
);
83 static int orion_nand_write(struct nand_device
*nand
, uint16_t data
)
85 struct orion_nand_controller
*hw
= nand
->controller_priv
;
86 struct target
*target
= hw
->target
;
89 target_write_u8(target
, hw
->data
, data
);
93 static int orion_nand_slow_block_write(struct nand_device
*nand
, uint8_t *data
, int size
)
96 orion_nand_write(nand
, *data
++);
100 static int orion_nand_fast_block_write(struct nand_device
*nand
, uint8_t *data
, int size
)
102 struct orion_nand_controller
*hw
= nand
->controller_priv
;
105 hw
->io
.chunk_size
= nand
->page_size
;
107 retval
= arm_nandwrite(&hw
->io
, data
, size
);
108 if (retval
== ERROR_NAND_NO_BUFFER
)
109 retval
= orion_nand_slow_block_write(nand
, data
, size
);
114 static int orion_nand_reset(struct nand_device
*nand
)
116 return orion_nand_command(nand
, NAND_CMD_RESET
);
119 static int orion_nand_controller_ready(struct nand_device
*nand
, int timeout
)
124 NAND_DEVICE_COMMAND_HANDLER(orion_nand_device_command
)
126 struct orion_nand_controller
*hw
;
131 LOG_ERROR("arguments must be: <target_id> <NAND_address>\n");
132 return ERROR_NAND_DEVICE_INVALID
;
135 hw
= calloc(1, sizeof(*hw
));
137 LOG_ERROR("no memory for nand controller\n");
138 return ERROR_NAND_DEVICE_INVALID
;
141 nand
->controller_priv
= hw
;
142 hw
->target
= get_target(CMD_ARGV
[1]);
144 LOG_ERROR("target '%s' not defined", CMD_ARGV
[1]);
146 return ERROR_NAND_DEVICE_INVALID
;
149 COMMAND_PARSE_NUMBER(u32
, CMD_ARGV
[2], base
);
154 hw
->cmd
= base
+ (1 << cle
);
155 hw
->addr
= base
+ (1 << ale
);
157 hw
->io
.target
= hw
->target
;
158 hw
->io
.data
= hw
->data
;
159 hw
->io
.op
= ARM_NAND_NONE
;
164 static int orion_nand_init(struct nand_device
*nand
)
169 struct nand_flash_controller orion_nand_controller
=
172 .command
= orion_nand_command
,
173 .address
= orion_nand_address
,
174 .read_data
= orion_nand_read
,
175 .write_data
= orion_nand_write
,
176 .write_block_data
= orion_nand_fast_block_write
,
177 .reset
= orion_nand_reset
,
178 .controller_ready
= orion_nand_controller_ready
,
179 .nand_device_command
= orion_nand_device_command
,
180 .init
= orion_nand_init
,