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d7e8ce10 | 1 | /* |
ea882baf WD |
2 | * (C) Copyright 2010 DENX Software Engineering |
3 | * Wolfgang Denk <wd@denx.de> | |
4 | * | |
937076f8 | 5 | * (C) Copyright 2005-2009 Samsung Electronics |
d7e8ce10 KP |
6 | * Kyungmin Park <kyungmin.park@samsung.com> |
7 | * | |
8 | * See file CREDITS for list of people who contributed to this | |
9 | * project. | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or | |
12 | * modify it under the terms of the GNU General Public License as | |
13 | * published by the Free Software Foundation; either version 2 of | |
14 | * the License, or (at your option) any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
24 | * MA 02111-1307 USA | |
25 | */ | |
26 | ||
27 | #include <common.h> | |
d7e8ce10 KP |
28 | #include <command.h> |
29 | #include <environment.h> | |
30 | #include <linux/stddef.h> | |
31 | #include <malloc.h> | |
ea882baf WD |
32 | #include <search.h> |
33 | #include <errno.h> | |
b919ec25 | 34 | #include <onenand_uboot.h> |
d7e8ce10 | 35 | |
7b15e2bb | 36 | #include <linux/compat.h> |
d7e8ce10 KP |
37 | #include <linux/mtd/mtd.h> |
38 | #include <linux/mtd/onenand.h> | |
39 | ||
d7e8ce10 KP |
40 | char *env_name_spec = "OneNAND"; |
41 | ||
034afbcc | 42 | #define ONENAND_MAX_ENV_SIZE CONFIG_ENV_SIZE |
937076f8 KP |
43 | #define ONENAND_ENV_SIZE(mtd) (ONENAND_MAX_ENV_SIZE - ENV_HEADER_SIZE) |
44 | ||
a9da2b41 KP |
45 | DECLARE_GLOBAL_DATA_PTR; |
46 | ||
d7e8ce10 KP |
47 | void env_relocate_spec(void) |
48 | { | |
937076f8 | 49 | struct mtd_info *mtd = &onenand_mtd; |
b821cead | 50 | #ifdef CONFIG_ENV_ADDR_FLEX |
c758e947 | 51 | struct onenand_chip *this = &onenand_chip; |
b821cead | 52 | #endif |
ea882baf | 53 | int rc; |
2ae64f51 | 54 | size_t retlen; |
ea882baf | 55 | #ifdef ENV_IS_EMBEDDED |
994bc671 | 56 | char *buf = (char *)&environment; |
ea882baf WD |
57 | #else |
58 | loff_t env_addr = CONFIG_ENV_ADDR; | |
cd0f4fa1 TR |
59 | char onenand_env[ONENAND_MAX_ENV_SIZE]; |
60 | char *buf = (char *)&onenand_env[0]; | |
ea882baf | 61 | #endif /* ENV_IS_EMBEDDED */ |
d7e8ce10 | 62 | |
ea882baf WD |
63 | #ifndef ENV_IS_EMBEDDED |
64 | # ifdef CONFIG_ENV_ADDR_FLEX | |
c758e947 AKS |
65 | if (FLEXONENAND(this)) |
66 | env_addr = CONFIG_ENV_ADDR_FLEX; | |
ea882baf | 67 | # endif |
d7e8ce10 | 68 | /* Check OneNAND exist */ |
937076f8 | 69 | if (mtd->writesize) |
d7e8ce10 | 70 | /* Ignore read fail */ |
dfe64e2c | 71 | mtd_read(mtd, env_addr, ONENAND_MAX_ENV_SIZE, |
b919ec25 | 72 | &retlen, (u_char *)buf); |
d7e8ce10 | 73 | else |
937076f8 | 74 | mtd->writesize = MAX_ONENAND_PAGESIZE; |
ea882baf | 75 | #endif /* !ENV_IS_EMBEDDED */ |
d7e8ce10 | 76 | |
ea882baf WD |
77 | rc = env_import(buf, 1); |
78 | if (rc) | |
79 | gd->env_valid = 1; | |
d7e8ce10 KP |
80 | } |
81 | ||
82 | int saveenv(void) | |
83 | { | |
cd0f4fa1 | 84 | env_t env_new; |
ea882baf WD |
85 | ssize_t len; |
86 | char *res; | |
937076f8 | 87 | struct mtd_info *mtd = &onenand_mtd; |
b821cead | 88 | #ifdef CONFIG_ENV_ADDR_FLEX |
c758e947 | 89 | struct onenand_chip *this = &onenand_chip; |
b821cead | 90 | #endif |
ea882baf WD |
91 | loff_t env_addr = CONFIG_ENV_ADDR; |
92 | size_t retlen; | |
a9da2b41 KP |
93 | struct erase_info instr = { |
94 | .callback = NULL, | |
95 | }; | |
ea882baf | 96 | |
cd0f4fa1 | 97 | res = (char *)&env_new.data; |
be11235a | 98 | len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL); |
ea882baf WD |
99 | if (len < 0) { |
100 | error("Cannot export environment: errno = %d\n", errno); | |
101 | return 1; | |
102 | } | |
cd0f4fa1 | 103 | env_new.crc = crc32(0, env_new.data, ENV_SIZE); |
d7e8ce10 | 104 | |
0e8d1586 | 105 | instr.len = CONFIG_ENV_SIZE; |
b821cead | 106 | #ifdef CONFIG_ENV_ADDR_FLEX |
c758e947 AKS |
107 | if (FLEXONENAND(this)) { |
108 | env_addr = CONFIG_ENV_ADDR_FLEX; | |
109 | instr.len = CONFIG_ENV_SIZE_FLEX; | |
110 | instr.len <<= onenand_mtd.eraseregions[0].numblocks == 1 ? | |
111 | 1 : 0; | |
112 | } | |
b821cead | 113 | #endif |
d7e8ce10 | 114 | instr.addr = env_addr; |
937076f8 | 115 | instr.mtd = mtd; |
dfe64e2c | 116 | if (mtd_erase(mtd, &instr)) { |
48287792 | 117 | printf("OneNAND: erase failed at 0x%08llx\n", env_addr); |
d7e8ce10 KP |
118 | return 1; |
119 | } | |
120 | ||
dfe64e2c | 121 | if (mtd_write(mtd, env_addr, ONENAND_MAX_ENV_SIZE, &retlen, |
cd0f4fa1 | 122 | (u_char *)&env_new)) { |
8d2effea | 123 | printf("OneNAND: write failed at 0x%llx\n", instr.addr); |
d7e8ce10 KP |
124 | return 2; |
125 | } | |
126 | ||
127 | return 0; | |
128 | } | |
129 | ||
130 | int env_init(void) | |
131 | { | |
d7e8ce10 | 132 | /* use default */ |
b919ec25 | 133 | gd->env_addr = (ulong)&default_environment[0]; |
d7e8ce10 KP |
134 | gd->env_valid = 1; |
135 | ||
136 | return 0; | |
137 | } |