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 char *env_name_spec = "OneNAND";
44 #define ONENAND_MAX_ENV_SIZE 4096
45 #define ONENAND_ENV_SIZE(mtd) (ONENAND_MAX_ENV_SIZE - ENV_HEADER_SIZE)
47 DECLARE_GLOBAL_DATA_PTR;
49 uchar env_get_char_spec(int index)
51 return (*((uchar *)(gd->env_addr + index)));
54 void env_relocate_spec(void)
56 struct mtd_info *mtd = &onenand_mtd;
57 #ifdef CONFIG_ENV_ADDR_FLEX
58 struct onenand_chip *this = &onenand_chip;
62 #ifdef ENV_IS_EMBEDDED
63 char *buf = (char *)&environment;
65 loff_t env_addr = CONFIG_ENV_ADDR;
66 char onenand_env[ONENAND_MAX_ENV_SIZE];
67 char *buf = (char *)&onenand_env[0];
68 #endif /* ENV_IS_EMBEDDED */
70 #ifndef ENV_IS_EMBEDDED
71 # ifdef CONFIG_ENV_ADDR_FLEX
72 if (FLEXONENAND(this))
73 env_addr = CONFIG_ENV_ADDR_FLEX;
75 /* Check OneNAND exist */
77 /* Ignore read fail */
78 mtd->read(mtd, env_addr, ONENAND_MAX_ENV_SIZE,
79 &retlen, (u_char *)buf);
81 mtd->writesize = MAX_ONENAND_PAGESIZE;
82 #endif /* !ENV_IS_EMBEDDED */
84 rc = env_import(buf, 1);
94 struct mtd_info *mtd = &onenand_mtd;
95 #ifdef CONFIG_ENV_ADDR_FLEX
96 struct onenand_chip *this = &onenand_chip;
98 loff_t env_addr = CONFIG_ENV_ADDR;
100 struct erase_info instr = {
104 res = (char *)&env_new.data;
105 len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, 0, NULL);
107 error("Cannot export environment: errno = %d\n", errno);
110 env_new.crc = crc32(0, env_new.data, ENV_SIZE);
112 instr.len = CONFIG_ENV_SIZE;
113 #ifdef CONFIG_ENV_ADDR_FLEX
114 if (FLEXONENAND(this)) {
115 env_addr = CONFIG_ENV_ADDR_FLEX;
116 instr.len = CONFIG_ENV_SIZE_FLEX;
117 instr.len <<= onenand_mtd.eraseregions[0].numblocks == 1 ?
121 instr.addr = env_addr;
123 if (mtd->erase(mtd, &instr)) {
124 printf("OneNAND: erase failed at 0x%08llx\n", env_addr);
128 if (mtd->write(mtd, env_addr, ONENAND_MAX_ENV_SIZE, &retlen,
129 (u_char *)&env_new)) {
130 printf("OneNAND: write failed at 0x%llx\n", instr.addr);
140 gd->env_addr = (ulong) & default_environment[0];