1 /*
2 * (C) Copyright 2010 DENX Software Engineering
3 * Wolfgang Denk <wd@denx.de>
4 *
5 * (C) Copyright 2005-2009 Samsung Electronics
6 * Kyungmin Park <kyungmin.park@samsung.com>
7 *
8 * SPDX-License-Identifier: GPL-2.0+
9 */
10
11 #include <common.h>
12 #include <command.h>
13 #include <environment.h>
14 #include <linux/stddef.h>
15 #include <malloc.h>
16 #include <search.h>
17 #include <errno.h>
18 #include <onenand_uboot.h>
19
20 #include <linux/compat.h>
21 #include <linux/mtd/mtd.h>
22 #include <linux/mtd/onenand.h>
23
24 char *env_name_spec = "OneNAND";
25
26 #define ONENAND_MAX_ENV_SIZE CONFIG_ENV_SIZE
27 #define ONENAND_ENV_SIZE(mtd) (ONENAND_MAX_ENV_SIZE - ENV_HEADER_SIZE)
28
29 DECLARE_GLOBAL_DATA_PTR;
30
env_relocate_spec(void)31 void env_relocate_spec(void)
32 {
33 struct mtd_info *mtd = &onenand_mtd;
34 #ifdef CONFIG_ENV_ADDR_FLEX
35 struct onenand_chip *this = &onenand_chip;
36 #endif
37 int rc;
38 size_t retlen;
39 #ifdef ENV_IS_EMBEDDED
40 char *buf = (char *)&environment;
41 #else
42 loff_t env_addr = CONFIG_ENV_ADDR;
43 char onenand_env[ONENAND_MAX_ENV_SIZE];
44 char *buf = (char *)&onenand_env[0];
45 #endif /* ENV_IS_EMBEDDED */
46
47 #ifndef ENV_IS_EMBEDDED
48 # ifdef CONFIG_ENV_ADDR_FLEX
49 if (FLEXONENAND(this))
50 env_addr = CONFIG_ENV_ADDR_FLEX;
51 # endif
52 /* Check OneNAND exist */
53 if (mtd->writesize)
54 /* Ignore read fail */
55 mtd_read(mtd, env_addr, ONENAND_MAX_ENV_SIZE,
56 &retlen, (u_char *)buf);
57 else
58 mtd->writesize = MAX_ONENAND_PAGESIZE;
59 #endif /* !ENV_IS_EMBEDDED */
60
61 rc = env_import(buf, 1);
62 if (rc)
63 gd->env_valid = 1;
64 }
65
saveenv(void)66 int saveenv(void)
67 {
68 env_t env_new;
69 int ret;
70 struct mtd_info *mtd = &onenand_mtd;
71 #ifdef CONFIG_ENV_ADDR_FLEX
72 struct onenand_chip *this = &onenand_chip;
73 #endif
74 loff_t env_addr = CONFIG_ENV_ADDR;
75 size_t retlen;
76 struct erase_info instr = {
77 .callback = NULL,
78 };
79
80 ret = env_export(&env_new);
81 if (ret)
82 return ret;
83
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 ?
90 1 : 0;
91 }
92 #endif
93 instr.addr = env_addr;
94 instr.mtd = mtd;
95 if (mtd_erase(mtd, &instr)) {
96 printf("OneNAND: erase failed at 0x%08llx\n", env_addr);
97 return 1;
98 }
99
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);
103 return 2;
104 }
105
106 return 0;
107 }
108
env_init(void)109 int env_init(void)
110 {
111 /* use default */
112 gd->env_addr = (ulong)&default_environment[0];
113 gd->env_valid = 1;
114
115 return 0;
116 }
117