1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2010 DENX Software Engineering
4 * Wolfgang Denk <wd@denx.de>
6 * (C) Copyright 2005-2009 Samsung Electronics
7 * Kyungmin Park <kyungmin.park@samsung.com>
12 #include <environment.h>
13 #include <linux/stddef.h>
17 #include <onenand_uboot.h>
19 #include <linux/compat.h>
20 #include <linux/mtd/mtd.h>
21 #include <linux/mtd/onenand.h>
23 #define ONENAND_MAX_ENV_SIZE CONFIG_ENV_SIZE
24 #define ONENAND_ENV_SIZE(mtd) (ONENAND_MAX_ENV_SIZE - ENV_HEADER_SIZE)
26 DECLARE_GLOBAL_DATA_PTR
;
28 static int env_onenand_load(void)
30 struct mtd_info
*mtd
= &onenand_mtd
;
31 #ifdef CONFIG_ENV_ADDR_FLEX
32 struct onenand_chip
*this = &onenand_chip
;
36 #ifdef ENV_IS_EMBEDDED
37 char *buf
= (char *)&environment
;
39 loff_t env_addr
= CONFIG_ENV_ADDR
;
40 char onenand_env
[ONENAND_MAX_ENV_SIZE
];
41 char *buf
= (char *)&onenand_env
[0];
42 #endif /* ENV_IS_EMBEDDED */
44 #ifndef ENV_IS_EMBEDDED
45 # ifdef CONFIG_ENV_ADDR_FLEX
46 if (FLEXONENAND(this))
47 env_addr
= CONFIG_ENV_ADDR_FLEX
;
49 /* Check OneNAND exist */
51 /* Ignore read fail */
52 mtd_read(mtd
, env_addr
, ONENAND_MAX_ENV_SIZE
,
53 &retlen
, (u_char
*)buf
);
55 mtd
->writesize
= MAX_ONENAND_PAGESIZE
;
56 #endif /* !ENV_IS_EMBEDDED */
58 rc
= env_import(buf
, 1);
60 gd
->env_valid
= ENV_VALID
;
65 static int env_onenand_save(void)
69 struct mtd_info
*mtd
= &onenand_mtd
;
70 #ifdef CONFIG_ENV_ADDR_FLEX
71 struct onenand_chip
*this = &onenand_chip
;
73 loff_t env_addr
= CONFIG_ENV_ADDR
;
75 struct erase_info instr
= {
79 ret
= env_export(&env_new
);
83 instr
.len
= CONFIG_ENV_SIZE
;
84 #ifdef CONFIG_ENV_ADDR_FLEX
85 if (FLEXONENAND(this)) {
86 env_addr
= CONFIG_ENV_ADDR_FLEX
;
87 instr
.len
= CONFIG_ENV_SIZE_FLEX
;
88 instr
.len
<<= onenand_mtd
.eraseregions
[0].numblocks
== 1 ?
92 instr
.addr
= env_addr
;
94 if (mtd_erase(mtd
, &instr
)) {
95 printf("OneNAND: erase failed at 0x%08llx\n", env_addr
);
99 if (mtd_write(mtd
, env_addr
, ONENAND_MAX_ENV_SIZE
, &retlen
,
100 (u_char
*)&env_new
)) {
101 printf("OneNAND: write failed at 0x%llx\n", instr
.addr
);
108 U_BOOT_ENV_LOCATION(onenand
) = {
109 .location
= ENVL_ONENAND
,
111 .load
= env_onenand_load
,
112 .save
= env_save_ptr(env_onenand_save
),