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7ce6031a PW |
1 | /* |
2 | * Copyright 2009(C) Marvell International Ltd. and its affiliates | |
3 | * Prafulla Wadaskar <prafulla@marvell.com> | |
4 | * | |
5 | * Based on drivers/mtd/spi/stmicro.c | |
6 | * | |
7 | * Copyright 2008, Network Appliance Inc. | |
8 | * Jason McMullan <mcmullan@netapp.com> | |
9 | * | |
10 | * Copyright (C) 2004-2007 Freescale Semiconductor, Inc. | |
11 | * TsiChung Liew (Tsi-Chung.Liew@freescale.com) | |
12 | * | |
13 | * See file CREDITS for list of people who contributed to this | |
14 | * project. | |
15 | * | |
16 | * This program is free software; you can redistribute it and/or | |
17 | * modify it under the terms of the GNU General Public License as | |
18 | * published by the Free Software Foundation; either version 2 of | |
19 | * the License, or (at your option) any later version. | |
20 | * | |
21 | * This program is distributed in the hope that it will be useful, | |
22 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
23 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
24 | * GNU General Public License for more details. | |
25 | * | |
26 | * You should have received a copy of the GNU General Public License | |
27 | * along with this program; if not, write to the Free Software | |
28 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, | |
29 | * MA 02110-1301 USA | |
30 | */ | |
31 | ||
32 | #include <common.h> | |
33 | #include <malloc.h> | |
34 | #include <spi_flash.h> | |
35 | ||
36 | #include "spi_flash_internal.h" | |
37 | ||
38 | /* MX25xx-specific commands */ | |
39 | #define CMD_MX25XX_WREN 0x06 /* Write Enable */ | |
40 | #define CMD_MX25XX_WRDI 0x04 /* Write Disable */ | |
41 | #define CMD_MX25XX_RDSR 0x05 /* Read Status Register */ | |
42 | #define CMD_MX25XX_WRSR 0x01 /* Write Status Register */ | |
43 | #define CMD_MX25XX_READ 0x03 /* Read Data Bytes */ | |
44 | #define CMD_MX25XX_FAST_READ 0x0b /* Read Data Bytes at Higher Speed */ | |
45 | #define CMD_MX25XX_PP 0x02 /* Page Program */ | |
46 | #define CMD_MX25XX_SE 0x20 /* Sector Erase */ | |
47 | #define CMD_MX25XX_BE 0xD8 /* Block Erase */ | |
48 | #define CMD_MX25XX_CE 0xc7 /* Chip Erase */ | |
49 | #define CMD_MX25XX_DP 0xb9 /* Deep Power-down */ | |
50 | #define CMD_MX25XX_RES 0xab /* Release from DP, and Read Signature */ | |
51 | ||
7ce6031a | 52 | struct macronix_spi_flash_params { |
2efee52b | 53 | u16 idcode; |
7ce6031a PW |
54 | u16 page_size; |
55 | u16 pages_per_sector; | |
56 | u16 sectors_per_block; | |
57 | u16 nr_blocks; | |
58 | const char *name; | |
59 | }; | |
60 | ||
61 | struct macronix_spi_flash { | |
62 | struct spi_flash flash; | |
63 | const struct macronix_spi_flash_params *params; | |
64 | }; | |
65 | ||
66 | static inline struct macronix_spi_flash *to_macronix_spi_flash(struct spi_flash | |
67 | *flash) | |
68 | { | |
69 | return container_of(flash, struct macronix_spi_flash, flash); | |
70 | } | |
71 | ||
72 | static const struct macronix_spi_flash_params macronix_spi_flash_table[] = { | |
73 | { | |
2efee52b PW |
74 | .idcode = 0x2015, |
75 | .page_size = 256, | |
76 | .pages_per_sector = 16, | |
77 | .sectors_per_block = 16, | |
78 | .nr_blocks = 32, | |
79 | .name = "MX25L1605D", | |
80 | }, | |
81 | { | |
82 | .idcode = 0x2016, | |
83 | .page_size = 256, | |
84 | .pages_per_sector = 16, | |
85 | .sectors_per_block = 16, | |
86 | .nr_blocks = 64, | |
87 | .name = "MX25L3205D", | |
88 | }, | |
89 | { | |
90 | .idcode = 0x2017, | |
91 | .page_size = 256, | |
92 | .pages_per_sector = 16, | |
93 | .sectors_per_block = 16, | |
94 | .nr_blocks = 128, | |
95 | .name = "MX25L6405D", | |
96 | }, | |
97 | { | |
98 | .idcode = 0x2018, | |
7ce6031a PW |
99 | .page_size = 256, |
100 | .pages_per_sector = 16, | |
101 | .sectors_per_block = 16, | |
102 | .nr_blocks = 256, | |
103 | .name = "MX25L12805D", | |
104 | }, | |
2efee52b PW |
105 | { |
106 | .idcode = 0x2618, | |
107 | .page_size = 256, | |
108 | .pages_per_sector = 16, | |
109 | .sectors_per_block = 16, | |
110 | .nr_blocks = 256, | |
111 | .name = "MX25L12855E", | |
112 | }, | |
7ce6031a PW |
113 | }; |
114 | ||
7ce6031a PW |
115 | static int macronix_write(struct spi_flash *flash, |
116 | u32 offset, size_t len, const void *buf) | |
117 | { | |
118 | struct macronix_spi_flash *mcx = to_macronix_spi_flash(flash); | |
119 | unsigned long page_addr; | |
120 | unsigned long byte_addr; | |
121 | unsigned long page_size; | |
122 | size_t chunk_len; | |
123 | size_t actual; | |
124 | int ret; | |
125 | u8 cmd[4]; | |
126 | ||
127 | page_size = mcx->params->page_size; | |
128 | page_addr = offset / page_size; | |
129 | byte_addr = offset % page_size; | |
130 | ||
131 | ret = spi_claim_bus(flash->spi); | |
132 | if (ret) { | |
133 | debug("SF: Unable to claim SPI bus\n"); | |
134 | return ret; | |
135 | } | |
136 | ||
137 | ret = 0; | |
138 | for (actual = 0; actual < len; actual += chunk_len) { | |
139 | chunk_len = min(len - actual, page_size - byte_addr); | |
140 | ||
141 | cmd[0] = CMD_MX25XX_PP; | |
142 | cmd[1] = page_addr >> 8; | |
143 | cmd[2] = page_addr; | |
144 | cmd[3] = byte_addr; | |
145 | ||
146 | debug | |
147 | ("PP: 0x%p => cmd = { 0x%02x 0x%02x%02x%02x } chunk_len = %d\n", | |
148 | buf + actual, cmd[0], cmd[1], cmd[2], cmd[3], chunk_len); | |
149 | ||
2744a4e6 | 150 | ret = spi_flash_cmd_write_enable(flash); |
7ce6031a PW |
151 | if (ret < 0) { |
152 | debug("SF: Enabling Write failed\n"); | |
153 | break; | |
154 | } | |
155 | ||
156 | ret = spi_flash_cmd_write(flash->spi, cmd, 4, | |
157 | buf + actual, chunk_len); | |
158 | if (ret < 0) { | |
159 | debug("SF: Macronix Page Program failed\n"); | |
160 | break; | |
161 | } | |
162 | ||
6163045b MF |
163 | ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT); |
164 | if (ret) | |
7ce6031a | 165 | break; |
7ce6031a PW |
166 | |
167 | page_addr++; | |
168 | byte_addr = 0; | |
169 | } | |
170 | ||
171 | debug("SF: Macronix: Successfully programmed %u bytes @ 0x%x\n", | |
172 | len, offset); | |
173 | ||
174 | spi_release_bus(flash->spi); | |
175 | return ret; | |
176 | } | |
177 | ||
f8f0757d | 178 | static int macronix_erase(struct spi_flash *flash, u32 offset, size_t len) |
7ce6031a | 179 | { |
4e6a5158 | 180 | return spi_flash_cmd_erase(flash, CMD_MX25XX_BE, offset, len); |
7ce6031a PW |
181 | } |
182 | ||
183 | struct spi_flash *spi_flash_probe_macronix(struct spi_slave *spi, u8 *idcode) | |
184 | { | |
185 | const struct macronix_spi_flash_params *params; | |
186 | struct macronix_spi_flash *mcx; | |
187 | unsigned int i; | |
2efee52b | 188 | u16 id = idcode[2] | idcode[1] << 8; |
7ce6031a PW |
189 | |
190 | for (i = 0; i < ARRAY_SIZE(macronix_spi_flash_table); i++) { | |
191 | params = ¯onix_spi_flash_table[i]; | |
2efee52b | 192 | if (params->idcode == id) |
7ce6031a PW |
193 | break; |
194 | } | |
195 | ||
196 | if (i == ARRAY_SIZE(macronix_spi_flash_table)) { | |
2efee52b | 197 | debug("SF: Unsupported Macronix ID %04x\n", id); |
7ce6031a PW |
198 | return NULL; |
199 | } | |
200 | ||
201 | mcx = malloc(sizeof(*mcx)); | |
202 | if (!mcx) { | |
203 | debug("SF: Failed to allocate memory\n"); | |
204 | return NULL; | |
205 | } | |
206 | ||
207 | mcx->params = params; | |
208 | mcx->flash.spi = spi; | |
209 | mcx->flash.name = params->name; | |
210 | ||
211 | mcx->flash.write = macronix_write; | |
212 | mcx->flash.erase = macronix_erase; | |
a4c3b40b | 213 | mcx->flash.read = spi_flash_cmd_read_fast; |
4e6a5158 RR |
214 | mcx->flash.sector_size = params->page_size * params->pages_per_sector |
215 | * params->sectors_per_block; | |
216 | mcx->flash.size = mcx->flash.sector_size * params->nr_blocks; | |
7ce6031a PW |
217 | |
218 | return &mcx->flash; | |
219 | } |