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 *nand, uint8_t command)
54 orion_nand_controller_t *hw = nand->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 *nand, uint8_t address)
64 orion_nand_controller_t *hw = nand->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 *nand, void *data)
74 orion_nand_controller_t *hw = nand->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 *nand, uint16_t data)
84 orion_nand_controller_t *hw = nand->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 *nand, uint8_t *data, int size)
95 orion_nand_write(nand, *data++);
99 static int orion_nand_fast_block_write(struct nand_device_s *nand, uint8_t *data, int size)
101 orion_nand_controller_t *hw = nand->controller_priv;
104 hw->io.chunk_size = nand->page_size;
106 retval = arm_nandwrite(&hw->io, data, size);
107 if (retval == ERROR_NAND_NO_BUFFER)
108 retval = orion_nand_slow_block_write(nand, data, size);
113 static int orion_nand_reset(struct nand_device_s *nand)
115 return orion_nand_command(nand, NAND_CMD_RESET);
118 static int orion_nand_controller_ready(struct nand_device_s *nand, int timeout)
123 static int orion_nand_register_commands(struct command_context_s *cmd_ctx)
128 NAND_DEVICE_COMMAND_HANDLER(orion_nand_device_command)
130 orion_nand_controller_t *hw;
135 LOG_ERROR("arguments must be: <target_id> <NAND_address>\n");
136 return ERROR_NAND_DEVICE_INVALID;
139 hw = calloc(1, sizeof(*hw));
141 LOG_ERROR("no memory for nand controller\n");
142 return ERROR_NAND_DEVICE_INVALID;
145 nand->controller_priv = hw;
146 hw->target = get_target(args[1]);
148 LOG_ERROR("target '%s' not defined", args[1]);
150 return ERROR_NAND_DEVICE_INVALID;
153 COMMAND_PARSE_NUMBER(u32, args[2], base);
158 hw->cmd = base + (1 << cle);
159 hw->addr = base + (1 << ale);
161 hw->io.target = hw->target;
162 hw->io.data = hw->data;
167 static int orion_nand_init(struct nand_device_s *nand)
172 struct nand_flash_controller orion_nand_controller =
175 .command = orion_nand_command,
176 .address = orion_nand_address,
177 .read_data = orion_nand_read,
178 .write_data = orion_nand_write,
179 .write_block_data = orion_nand_fast_block_write,
180 .reset = orion_nand_reset,
181 .controller_ready = orion_nand_controller_ready,
182 .nand_device_command = orion_nand_device_command,
183 .register_commands = orion_nand_register_commands,
184 .init = orion_nand_init,