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git.ipfire.org Git - people/ms/u-boot.git/blob - env/onenand.c
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 * SPDX-License-Identifier: GPL-2.0+
13 #include <environment.h>
14 #include <linux/stddef.h>
18 #include <onenand_uboot.h>
20 #include <linux/compat.h>
21 #include <linux/mtd/mtd.h>
22 #include <linux/mtd/onenand.h>
24 #define ONENAND_MAX_ENV_SIZE CONFIG_ENV_SIZE
25 #define ONENAND_ENV_SIZE(mtd) (ONENAND_MAX_ENV_SIZE - ENV_HEADER_SIZE)
27 DECLARE_GLOBAL_DATA_PTR
;
29 static int env_onenand_load(void)
31 struct mtd_info
*mtd
= &onenand_mtd
;
32 #ifdef CONFIG_ENV_ADDR_FLEX
33 struct onenand_chip
*this = &onenand_chip
;
37 #ifdef ENV_IS_EMBEDDED
38 char *buf
= (char *)&environment
;
40 loff_t env_addr
= CONFIG_ENV_ADDR
;
41 char onenand_env
[ONENAND_MAX_ENV_SIZE
];
42 char *buf
= (char *)&onenand_env
[0];
43 #endif /* ENV_IS_EMBEDDED */
45 #ifndef ENV_IS_EMBEDDED
46 # ifdef CONFIG_ENV_ADDR_FLEX
47 if (FLEXONENAND(this))
48 env_addr
= CONFIG_ENV_ADDR_FLEX
;
50 /* Check OneNAND exist */
52 /* Ignore read fail */
53 mtd_read(mtd
, env_addr
, ONENAND_MAX_ENV_SIZE
,
54 &retlen
, (u_char
*)buf
);
56 mtd
->writesize
= MAX_ONENAND_PAGESIZE
;
57 #endif /* !ENV_IS_EMBEDDED */
59 rc
= env_import(buf
, 1);
61 gd
->env_valid
= ENV_VALID
;
66 static int env_onenand_save(void)
70 struct mtd_info
*mtd
= &onenand_mtd
;
71 #ifdef CONFIG_ENV_ADDR_FLEX
72 struct onenand_chip
*this = &onenand_chip
;
74 loff_t env_addr
= CONFIG_ENV_ADDR
;
76 struct erase_info instr
= {
80 ret
= env_export(&env_new
);
84 instr
.len
= CONFIG_ENV_SIZE
;
85 #ifdef CONFIG_ENV_ADDR_FLEX
86 if (FLEXONENAND(this)) {
87 env_addr
= CONFIG_ENV_ADDR_FLEX
;
88 instr
.len
= CONFIG_ENV_SIZE_FLEX
;
89 instr
.len
<<= onenand_mtd
.eraseregions
[0].numblocks
== 1 ?
93 instr
.addr
= env_addr
;
95 if (mtd_erase(mtd
, &instr
)) {
96 printf("OneNAND: erase failed at 0x%08llx\n", env_addr
);
100 if (mtd_write(mtd
, env_addr
, ONENAND_MAX_ENV_SIZE
, &retlen
,
101 (u_char
*)&env_new
)) {
102 printf("OneNAND: write failed at 0x%llx\n", instr
.addr
);
109 U_BOOT_ENV_LOCATION(onenand
) = {
110 .location
= ENVL_ONENAND
,
112 .load
= env_onenand_load
,
113 .save
= env_save_ptr(env_onenand_save
),