1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
|
/*
* Copyright 2009(C) Marvell International Ltd. and its affiliates
* Prafulla Wadaskar <prafulla@marvell.com>
*
* Based on drivers/mtd/spi/stmicro.c
*
* Copyright 2008, Network Appliance Inc.
* Jason McMullan <mcmullan@netapp.com>
*
* Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
* TsiChung Liew (Tsi-Chung.Liew@freescale.com)
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#include <common.h>
#include <malloc.h>
#include <spi_flash.h>
#include "spi_flash_internal.h"
/* MX25xx-specific commands */
#define CMD_MX25XX_WREN 0x06 /* Write Enable */
#define CMD_MX25XX_WRDI 0x04 /* Write Disable */
#define CMD_MX25XX_RDSR 0x05 /* Read Status Register */
#define CMD_MX25XX_WRSR 0x01 /* Write Status Register */
#define CMD_MX25XX_READ 0x03 /* Read Data Bytes */
#define CMD_MX25XX_FAST_READ 0x0b /* Read Data Bytes at Higher Speed */
#define CMD_MX25XX_PP 0x02 /* Page Program */
#define CMD_MX25XX_SE 0x20 /* Sector Erase */
#define CMD_MX25XX_BE 0xD8 /* Block Erase */
#define CMD_MX25XX_CE 0xc7 /* Chip Erase */
#define CMD_MX25XX_DP 0xb9 /* Deep Power-down */
#define CMD_MX25XX_RES 0xab /* Release from DP, and Read Signature */
struct macronix_spi_flash_params {
u16 idcode;
u16 page_size;
u16 pages_per_sector;
u16 sectors_per_block;
u16 nr_blocks;
const char *name;
};
struct macronix_spi_flash {
struct spi_flash flash;
const struct macronix_spi_flash_params *params;
};
static inline struct macronix_spi_flash *to_macronix_spi_flash(struct spi_flash
*flash)
{
return container_of(flash, struct macronix_spi_flash, flash);
}
static const struct macronix_spi_flash_params macronix_spi_flash_table[] = {
{
.idcode = 0x2015,
.page_size = 256,
.pages_per_sector = 16,
.sectors_per_block = 16,
.nr_blocks = 32,
.name = "MX25L1605D",
},
{
.idcode = 0x2016,
.page_size = 256,
.pages_per_sector = 16,
.sectors_per_block = 16,
.nr_blocks = 64,
.name = "MX25L3205D",
},
{
.idcode = 0x2017,
.page_size = 256,
.pages_per_sector = 16,
.sectors_per_block = 16,
.nr_blocks = 128,
.name = "MX25L6405D",
},
{
.idcode = 0x2018,
.page_size = 256,
.pages_per_sector = 16,
.sectors_per_block = 16,
.nr_blocks = 256,
.name = "MX25L12805D",
},
{
.idcode = 0x2618,
.page_size = 256,
.pages_per_sector = 16,
.sectors_per_block = 16,
.nr_blocks = 256,
.name = "MX25L12855E",
},
};
static int macronix_write(struct spi_flash *flash,
u32 offset, size_t len, const void *buf)
{
struct macronix_spi_flash *mcx = to_macronix_spi_flash(flash);
unsigned long page_addr;
unsigned long byte_addr;
unsigned long page_size;
size_t chunk_len;
size_t actual;
int ret;
u8 cmd[4];
page_size = mcx->params->page_size;
page_addr = offset / page_size;
byte_addr = offset % page_size;
ret = spi_claim_bus(flash->spi);
if (ret) {
debug("SF: Unable to claim SPI bus\n");
return ret;
}
ret = 0;
for (actual = 0; actual < len; actual += chunk_len) {
chunk_len = min(len - actual, page_size - byte_addr);
cmd[0] = CMD_MX25XX_PP;
cmd[1] = page_addr >> 8;
cmd[2] = page_addr;
cmd[3] = byte_addr;
debug
("PP: 0x%p => cmd = { 0x%02x 0x%02x%02x%02x } chunk_len = %d\n",
buf + actual, cmd[0], cmd[1], cmd[2], cmd[3], chunk_len);
ret = spi_flash_cmd(flash->spi, CMD_MX25XX_WREN, NULL, 0);
if (ret < 0) {
debug("SF: Enabling Write failed\n");
break;
}
ret = spi_flash_cmd_write(flash->spi, cmd, 4,
buf + actual, chunk_len);
if (ret < 0) {
debug("SF: Macronix Page Program failed\n");
break;
}
ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
if (ret)
break;
page_addr++;
byte_addr = 0;
}
debug("SF: Macronix: Successfully programmed %u bytes @ 0x%x\n",
len, offset);
spi_release_bus(flash->spi);
return ret;
}
int macronix_erase(struct spi_flash *flash, u32 offset, size_t len)
{
return spi_flash_cmd_erase(flash, CMD_MX25XX_BE, offset, len);
}
struct spi_flash *spi_flash_probe_macronix(struct spi_slave *spi, u8 *idcode)
{
const struct macronix_spi_flash_params *params;
struct macronix_spi_flash *mcx;
unsigned int i;
u16 id = idcode[2] | idcode[1] << 8;
for (i = 0; i < ARRAY_SIZE(macronix_spi_flash_table); i++) {
params = ¯onix_spi_flash_table[i];
if (params->idcode == id)
break;
}
if (i == ARRAY_SIZE(macronix_spi_flash_table)) {
debug("SF: Unsupported Macronix ID %04x\n", id);
return NULL;
}
mcx = malloc(sizeof(*mcx));
if (!mcx) {
debug("SF: Failed to allocate memory\n");
return NULL;
}
mcx->params = params;
mcx->flash.spi = spi;
mcx->flash.name = params->name;
mcx->flash.write = macronix_write;
mcx->flash.erase = macronix_erase;
mcx->flash.read = spi_flash_cmd_read_fast;
mcx->flash.sector_size = params->page_size * params->pages_per_sector
* params->sectors_per_block;
mcx->flash.size = mcx->flash.sector_size * params->nr_blocks;
return &mcx->flash;
}
|
