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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 KP |
35 | |
36 | #include <linux/mtd/compat.h> | |
37 | #include <linux/mtd/mtd.h> | |
38 | #include <linux/mtd/onenand.h> | |
39 | ||
d7e8ce10 KP |
40 | char *env_name_spec = "OneNAND"; |
41 | ||
937076f8 KP |
42 | #define ONENAND_MAX_ENV_SIZE 4096 |
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 | uchar env_get_char_spec(int index) |
48 | { | |
b919ec25 | 49 | return *((uchar *)(gd->env_addr + index)); |
d7e8ce10 KP |
50 | } |
51 | ||
52 | void env_relocate_spec(void) | |
53 | { | |
937076f8 | 54 | struct mtd_info *mtd = &onenand_mtd; |
b821cead | 55 | #ifdef CONFIG_ENV_ADDR_FLEX |
c758e947 | 56 | struct onenand_chip *this = &onenand_chip; |
b821cead | 57 | #endif |
ea882baf | 58 | int rc; |
2ae64f51 | 59 | size_t retlen; |
ea882baf | 60 | #ifdef ENV_IS_EMBEDDED |
994bc671 | 61 | char *buf = (char *)&environment; |
ea882baf WD |
62 | #else |
63 | loff_t env_addr = CONFIG_ENV_ADDR; | |
64 | char onenand_env[ONENAND_MAX_ENV_SIZE]; | |
65 | char *buf = (char *)&onenand_env[0]; | |
66 | #endif /* ENV_IS_EMBEDDED */ | |
d7e8ce10 | 67 | |
ea882baf WD |
68 | #ifndef ENV_IS_EMBEDDED |
69 | # ifdef CONFIG_ENV_ADDR_FLEX | |
c758e947 AKS |
70 | if (FLEXONENAND(this)) |
71 | env_addr = CONFIG_ENV_ADDR_FLEX; | |
ea882baf | 72 | # endif |
d7e8ce10 | 73 | /* Check OneNAND exist */ |
937076f8 | 74 | if (mtd->writesize) |
d7e8ce10 | 75 | /* Ignore read fail */ |
937076f8 | 76 | mtd->read(mtd, env_addr, ONENAND_MAX_ENV_SIZE, |
b919ec25 | 77 | &retlen, (u_char *)buf); |
d7e8ce10 | 78 | else |
937076f8 | 79 | mtd->writesize = MAX_ONENAND_PAGESIZE; |
ea882baf | 80 | #endif /* !ENV_IS_EMBEDDED */ |
d7e8ce10 | 81 | |
ea882baf WD |
82 | rc = env_import(buf, 1); |
83 | if (rc) | |
84 | gd->env_valid = 1; | |
d7e8ce10 KP |
85 | } |
86 | ||
87 | int saveenv(void) | |
88 | { | |
ea882baf WD |
89 | env_t env_new; |
90 | ssize_t len; | |
91 | char *res; | |
937076f8 | 92 | struct mtd_info *mtd = &onenand_mtd; |
b821cead | 93 | #ifdef CONFIG_ENV_ADDR_FLEX |
c758e947 | 94 | struct onenand_chip *this = &onenand_chip; |
b821cead | 95 | #endif |
ea882baf WD |
96 | loff_t env_addr = CONFIG_ENV_ADDR; |
97 | size_t retlen; | |
a9da2b41 KP |
98 | struct erase_info instr = { |
99 | .callback = NULL, | |
100 | }; | |
ea882baf WD |
101 | |
102 | res = (char *)&env_new.data; | |
37f2fe74 | 103 | len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL); |
ea882baf WD |
104 | if (len < 0) { |
105 | error("Cannot export environment: errno = %d\n", errno); | |
106 | return 1; | |
107 | } | |
108 | env_new.crc = crc32(0, env_new.data, ENV_SIZE); | |
d7e8ce10 | 109 | |
0e8d1586 | 110 | instr.len = CONFIG_ENV_SIZE; |
b821cead | 111 | #ifdef CONFIG_ENV_ADDR_FLEX |
c758e947 AKS |
112 | if (FLEXONENAND(this)) { |
113 | env_addr = CONFIG_ENV_ADDR_FLEX; | |
114 | instr.len = CONFIG_ENV_SIZE_FLEX; | |
115 | instr.len <<= onenand_mtd.eraseregions[0].numblocks == 1 ? | |
116 | 1 : 0; | |
117 | } | |
b821cead | 118 | #endif |
d7e8ce10 | 119 | instr.addr = env_addr; |
937076f8 KP |
120 | instr.mtd = mtd; |
121 | if (mtd->erase(mtd, &instr)) { | |
48287792 | 122 | printf("OneNAND: erase failed at 0x%08llx\n", env_addr); |
d7e8ce10 KP |
123 | return 1; |
124 | } | |
125 | ||
937076f8 | 126 | if (mtd->write(mtd, env_addr, ONENAND_MAX_ENV_SIZE, &retlen, |
b919ec25 | 127 | (u_char *)&env_new)) { |
8d2effea | 128 | printf("OneNAND: write failed at 0x%llx\n", instr.addr); |
d7e8ce10 KP |
129 | return 2; |
130 | } | |
131 | ||
132 | return 0; | |
133 | } | |
134 | ||
135 | int env_init(void) | |
136 | { | |
d7e8ce10 | 137 | /* use default */ |
b919ec25 | 138 | gd->env_addr = (ulong)&default_environment[0]; |
d7e8ce10 KP |
139 | gd->env_valid = 1; |
140 | ||
141 | return 0; | |
142 | } |