arm: meson-gx: add board_usb_init()/cleanup() for USB gadget
[oweals/u-boot.git] / env / onenand.c
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * (C) Copyright 2010 DENX Software Engineering
4  * Wolfgang Denk <wd@denx.de>
5  *
6  * (C) Copyright 2005-2009 Samsung Electronics
7  * Kyungmin Park <kyungmin.park@samsung.com>
8  */
9
10 #include <common.h>
11 #include <command.h>
12 #include <env_internal.h>
13 #include <linux/stddef.h>
14 #include <malloc.h>
15 #include <search.h>
16 #include <errno.h>
17 #include <onenand_uboot.h>
18
19 #include <linux/compat.h>
20 #include <linux/mtd/mtd.h>
21 #include <linux/mtd/onenand.h>
22
23 #define ONENAND_MAX_ENV_SIZE    CONFIG_ENV_SIZE
24 #define ONENAND_ENV_SIZE(mtd)   (ONENAND_MAX_ENV_SIZE - ENV_HEADER_SIZE)
25
26 DECLARE_GLOBAL_DATA_PTR;
27
28 static int env_onenand_load(void)
29 {
30         struct mtd_info *mtd = &onenand_mtd;
31 #ifdef CONFIG_ENV_ADDR_FLEX
32         struct onenand_chip *this = &onenand_chip;
33 #endif
34         int rc;
35         size_t retlen;
36 #ifdef ENV_IS_EMBEDDED
37         char *buf = (char *)&environment;
38 #else
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 */
43
44 #ifndef ENV_IS_EMBEDDED
45 # ifdef CONFIG_ENV_ADDR_FLEX
46         if (FLEXONENAND(this))
47                 env_addr = CONFIG_ENV_ADDR_FLEX;
48 # endif
49         /* Check OneNAND exist */
50         if (mtd->writesize)
51                 /* Ignore read fail */
52                 mtd_read(mtd, env_addr, ONENAND_MAX_ENV_SIZE,
53                                 &retlen, (u_char *)buf);
54         else
55                 mtd->writesize = MAX_ONENAND_PAGESIZE;
56 #endif /* !ENV_IS_EMBEDDED */
57
58         rc = env_import(buf, 1);
59         if (!rc)
60                 gd->env_valid = ENV_VALID;
61
62         return rc;
63 }
64
65 static int env_onenand_save(void)
66 {
67         env_t   env_new;
68         int ret;
69         struct mtd_info *mtd = &onenand_mtd;
70 #ifdef CONFIG_ENV_ADDR_FLEX
71         struct onenand_chip *this = &onenand_chip;
72 #endif
73         loff_t  env_addr = CONFIG_ENV_ADDR;
74         size_t  retlen;
75         struct erase_info instr = {
76                 .callback       = NULL,
77         };
78
79         ret = env_export(&env_new);
80         if (ret)
81                 return ret;
82
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 ?
89                                 1 : 0;
90         }
91 #endif
92         instr.addr = env_addr;
93         instr.mtd = mtd;
94         if (mtd_erase(mtd, &instr)) {
95                 printf("OneNAND: erase failed at 0x%08llx\n", env_addr);
96                 return 1;
97         }
98
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);
102                 return 2;
103         }
104
105         return 0;
106 }
107
108 U_BOOT_ENV_LOCATION(onenand) = {
109         .location       = ENVL_ONENAND,
110         ENV_NAME("OneNAND")
111         .load           = env_onenand_load,
112         .save           = env_save_ptr(env_onenand_save),
113 };