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git.ipfire.org Git - people/ms/u-boot.git/blob - common/env_onenand.c
6fd5613eebef0dfa1a607f16848fabe92ead28af
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>
34 #include <onenand_uboot.h>
36 #include <linux/compat.h>
37 #include <linux/mtd/mtd.h>
38 #include <linux/mtd/onenand.h>
40 char *env_name_spec
= "OneNAND";
42 #define ONENAND_MAX_ENV_SIZE CONFIG_ENV_SIZE
43 #define ONENAND_ENV_SIZE(mtd) (ONENAND_MAX_ENV_SIZE - ENV_HEADER_SIZE)
45 static char env_buf
[CONFIG_ENV_SIZE
];
47 DECLARE_GLOBAL_DATA_PTR
;
49 void env_relocate_spec(void)
51 struct mtd_info
*mtd
= &onenand_mtd
;
52 #ifdef CONFIG_ENV_ADDR_FLEX
53 struct onenand_chip
*this = &onenand_chip
;
57 #ifdef ENV_IS_EMBEDDED
58 char *buf
= (char *)&environment
;
60 loff_t env_addr
= CONFIG_ENV_ADDR
;
62 #endif /* ENV_IS_EMBEDDED */
64 #ifndef ENV_IS_EMBEDDED
65 # ifdef CONFIG_ENV_ADDR_FLEX
66 if (FLEXONENAND(this))
67 env_addr
= CONFIG_ENV_ADDR_FLEX
;
69 /* Check OneNAND exist */
71 /* Ignore read fail */
72 mtd
->read(mtd
, env_addr
, ONENAND_MAX_ENV_SIZE
,
73 &retlen
, (u_char
*)buf
);
75 mtd
->writesize
= MAX_ONENAND_PAGESIZE
;
76 #endif /* !ENV_IS_EMBEDDED */
78 rc
= env_import(buf
, 1);
85 env_t
*env_new
= env_buf
;
88 struct mtd_info
*mtd
= &onenand_mtd
;
89 #ifdef CONFIG_ENV_ADDR_FLEX
90 struct onenand_chip
*this = &onenand_chip
;
92 loff_t env_addr
= CONFIG_ENV_ADDR
;
94 struct erase_info instr
= {
98 res
= (char *)env_new
->data
;
99 len
= hexport_r(&env_htab
, '\0', 0, &res
, ENV_SIZE
, 0, NULL
);
101 error("Cannot export environment: errno = %d\n", errno
);
104 env_new
->crc
= crc32(0, env_new
->data
, ENV_SIZE
);
106 instr
.len
= CONFIG_ENV_SIZE
;
107 #ifdef CONFIG_ENV_ADDR_FLEX
108 if (FLEXONENAND(this)) {
109 env_addr
= CONFIG_ENV_ADDR_FLEX
;
110 instr
.len
= CONFIG_ENV_SIZE_FLEX
;
111 instr
.len
<<= onenand_mtd
.eraseregions
[0].numblocks
== 1 ?
115 instr
.addr
= env_addr
;
117 if (mtd
->erase(mtd
, &instr
)) {
118 printf("OneNAND: erase failed at 0x%08llx\n", env_addr
);
122 if (mtd
->write(mtd
, env_addr
, ONENAND_MAX_ENV_SIZE
, &retlen
,
123 (u_char
*)env_new
)) {
124 printf("OneNAND: write failed at 0x%llx\n", instr
.addr
);
134 gd
->env_addr
= (ulong
)&default_environment
[0];