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7b7a869a TL |
1 | /* |
2 | * (C) Copyright 2000-2002 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
5 | * Copyright 2008, Network Appliance Inc. | |
6 | * Jason McMullan <mcmullan@netapp.com> | |
7 | * | |
8 | * Copyright (C) 2004-2007 Freescale Semiconductor, Inc. | |
9 | * TsiChung Liew (Tsi-Chung.Liew@freescale.com) | |
10 | * | |
11 | * See file CREDITS for list of people who contributed to this | |
12 | * project. | |
13 | * | |
14 | * This program is free software; you can redistribute it and/or | |
15 | * modify it under the terms of the GNU General Public License as | |
16 | * published by the Free Software Foundation; either version 2 of | |
17 | * the License, or (at your option) any later version. | |
18 | * | |
19 | * This program is distributed in the hope that it will be useful, | |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | * GNU General Public License for more details. | |
23 | * | |
24 | * You should have received a copy of the GNU General Public License | |
25 | * along with this program; if not, write to the Free Software | |
26 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
27 | * MA 02111-1307 USA | |
28 | */ | |
29 | ||
30 | #include <common.h> | |
31 | #include <malloc.h> | |
32 | #include <spi_flash.h> | |
33 | ||
34 | #include "spi_flash_internal.h" | |
35 | ||
36 | /* M25Pxx-specific commands */ | |
7b7a869a TL |
37 | #define CMD_M25PXX_RES 0xab /* Release from DP, and Read Signature */ |
38 | ||
7b7a869a TL |
39 | struct stmicro_spi_flash_params { |
40 | u8 idcode1; | |
7b7a869a TL |
41 | u16 pages_per_sector; |
42 | u16 nr_sectors; | |
43 | const char *name; | |
44 | }; | |
45 | ||
7b7a869a | 46 | static const struct stmicro_spi_flash_params stmicro_spi_flash_table[] = { |
12c2e3bb | 47 | { |
fba2c44e | 48 | .idcode1 = 0x11, |
12c2e3bb TC |
49 | .pages_per_sector = 128, |
50 | .nr_sectors = 4, | |
51 | .name = "M25P10", | |
52 | }, | |
7b7a869a | 53 | { |
fba2c44e | 54 | .idcode1 = 0x15, |
7b7a869a TL |
55 | .pages_per_sector = 256, |
56 | .nr_sectors = 32, | |
57 | .name = "M25P16", | |
58 | }, | |
59 | { | |
fba2c44e | 60 | .idcode1 = 0x12, |
7b7a869a TL |
61 | .pages_per_sector = 256, |
62 | .nr_sectors = 4, | |
63 | .name = "M25P20", | |
64 | }, | |
65 | { | |
fba2c44e | 66 | .idcode1 = 0x16, |
7b7a869a TL |
67 | .pages_per_sector = 256, |
68 | .nr_sectors = 64, | |
69 | .name = "M25P32", | |
70 | }, | |
71 | { | |
fba2c44e | 72 | .idcode1 = 0x13, |
7b7a869a TL |
73 | .pages_per_sector = 256, |
74 | .nr_sectors = 8, | |
75 | .name = "M25P40", | |
76 | }, | |
77 | { | |
fba2c44e | 78 | .idcode1 = 0x17, |
7b7a869a TL |
79 | .pages_per_sector = 256, |
80 | .nr_sectors = 128, | |
81 | .name = "M25P64", | |
82 | }, | |
83 | { | |
fba2c44e | 84 | .idcode1 = 0x14, |
7b7a869a TL |
85 | .pages_per_sector = 256, |
86 | .nr_sectors = 16, | |
87 | .name = "M25P80", | |
88 | }, | |
89 | { | |
fba2c44e | 90 | .idcode1 = 0x18, |
7b7a869a TL |
91 | .pages_per_sector = 1024, |
92 | .nr_sectors = 64, | |
93 | .name = "M25P128", | |
94 | }, | |
95 | }; | |
96 | ||
7b7a869a TL |
97 | struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 * idcode) |
98 | { | |
99 | const struct stmicro_spi_flash_params *params; | |
b06afa75 | 100 | struct spi_flash *flash; |
7b7a869a | 101 | unsigned int i; |
7b7a869a | 102 | |
12c2e3bb TC |
103 | if (idcode[0] == 0xff) { |
104 | i = spi_flash_cmd(spi, CMD_M25PXX_RES, | |
105 | idcode, 4); | |
106 | if (i) | |
107 | return NULL; | |
108 | if ((idcode[3] & 0xf0) == 0x10) { | |
109 | idcode[0] = 0x20; | |
110 | idcode[1] = 0x20; | |
111 | idcode[2] = idcode[3] + 1; | |
112 | } else | |
113 | return NULL; | |
114 | } | |
115 | ||
7b7a869a TL |
116 | for (i = 0; i < ARRAY_SIZE(stmicro_spi_flash_table); i++) { |
117 | params = &stmicro_spi_flash_table[i]; | |
118 | if (params->idcode1 == idcode[2]) { | |
119 | break; | |
120 | } | |
121 | } | |
122 | ||
123 | if (i == ARRAY_SIZE(stmicro_spi_flash_table)) { | |
9726ba4a | 124 | debug("SF: Unsupported STMicro ID %02x\n", idcode[1]); |
7b7a869a TL |
125 | return NULL; |
126 | } | |
127 | ||
b06afa75 MF |
128 | flash = malloc(sizeof(*flash)); |
129 | if (!flash) { | |
7b7a869a TL |
130 | debug("SF: Failed to allocate memory\n"); |
131 | return NULL; | |
132 | } | |
133 | ||
b06afa75 MF |
134 | flash->spi = spi; |
135 | flash->name = params->name; | |
7b7a869a | 136 | |
b06afa75 | 137 | flash->write = spi_flash_cmd_write_multi; |
c4e932ce | 138 | flash->erase = spi_flash_cmd_erase; |
b06afa75 | 139 | flash->read = spi_flash_cmd_read_fast; |
a4ed3b65 MF |
140 | flash->page_size = 256; |
141 | flash->sector_size = 256 * params->pages_per_sector; | |
b06afa75 | 142 | flash->size = flash->sector_size * params->nr_sectors; |
7b7a869a | 143 | |
b06afa75 | 144 | return flash; |
7b7a869a | 145 | } |