2 * (C) Copyright 2010 DENX Software Engineering
3 * Wolfgang Denk <wd@denx.de>
5 * (C) Copyright 2005-2009 Samsung Electronics
6 * Kyungmin Park <kyungmin.park@samsung.com>
8 * See file CREDITS for list of people who contributed to this
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.
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.
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,
29 #include <environment.h>
30 #include <linux/stddef.h>
35 #include <linux/mtd/compat.h>
36 #include <linux/mtd/mtd.h>
37 #include <linux/mtd/onenand.h>
39 extern struct mtd_info onenand_mtd;
40 extern struct onenand_chip onenand_chip;
42 /* References to names in env_common.c */
43 extern uchar default_environment[];
45 char *env_name_spec = "OneNAND";
47 #define ONENAND_MAX_ENV_SIZE 4096
48 #define ONENAND_ENV_SIZE(mtd) (ONENAND_MAX_ENV_SIZE - ENV_HEADER_SIZE)
50 #ifdef ENV_IS_EMBEDDED
51 extern uchar environment[];
52 #endif /* ENV_IS_EMBEDDED */
54 DECLARE_GLOBAL_DATA_PTR;
56 uchar env_get_char_spec(int index)
58 return (*((uchar *)(gd->env_addr + index)));
61 void env_relocate_spec(void)
63 struct mtd_info *mtd = &onenand_mtd;
64 #ifdef CONFIG_ENV_ADDR_FLEX
65 struct onenand_chip *this = &onenand_chip;
69 #ifdef ENV_IS_EMBEDDED
70 char *buf = (char *)&environment[0];
72 loff_t env_addr = CONFIG_ENV_ADDR;
73 char onenand_env[ONENAND_MAX_ENV_SIZE];
74 char *buf = (char *)&onenand_env[0];
75 #endif /* ENV_IS_EMBEDDED */
77 #ifndef ENV_IS_EMBEDDED
78 # ifdef CONFIG_ENV_ADDR_FLEX
79 if (FLEXONENAND(this))
80 env_addr = CONFIG_ENV_ADDR_FLEX;
82 /* Check OneNAND exist */
84 /* Ignore read fail */
85 mtd->read(mtd, env_addr, ONENAND_MAX_ENV_SIZE,
86 &retlen, (u_char *)buf);
88 mtd->writesize = MAX_ONENAND_PAGESIZE;
89 #endif /* !ENV_IS_EMBEDDED */
91 rc = env_import(buf, 1);
101 struct mtd_info *mtd = &onenand_mtd;
102 #ifdef CONFIG_ENV_ADDR_FLEX
103 struct onenand_chip *this = &onenand_chip;
105 loff_t env_addr = CONFIG_ENV_ADDR;
107 struct erase_info instr = {
111 res = (char *)&env_new.data;
112 len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
114 error("Cannot export environment: errno = %d\n", errno);
117 env_new.crc = crc32(0, env_new.data, ENV_SIZE);
119 instr.len = CONFIG_ENV_SIZE;
120 #ifdef CONFIG_ENV_ADDR_FLEX
121 if (FLEXONENAND(this)) {
122 env_addr = CONFIG_ENV_ADDR_FLEX;
123 instr.len = CONFIG_ENV_SIZE_FLEX;
124 instr.len <<= onenand_mtd.eraseregions[0].numblocks == 1 ?
128 instr.addr = env_addr;
130 if (mtd->erase(mtd, &instr)) {
131 printf("OneNAND: erase failed at 0x%08llx\n", env_addr);
135 if (mtd->write(mtd, env_addr, ONENAND_MAX_ENV_SIZE, &retlen,
136 (u_char *)&env_new)) {
137 printf("OneNAND: write failed at 0x%llx\n", instr.addr);
147 gd->env_addr = (ulong) & default_environment[0];