arm: meson-gx: add board_usb_init()/cleanup() for USB gadget
[oweals/u-boot.git] / env / ext4.c
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * (c) Copyright 2016 by VRT Technology
4  *
5  * Author:
6  *  Stuart Longland <stuartl@vrt.com.au>
7  *
8  * Based on FAT environment driver
9  * (c) Copyright 2011 by Tigris Elektronik GmbH
10  *
11  * Author:
12  *  Maximilian Schwerin <mvs@tigris.de>
13  *
14  * and EXT4 filesystem implementation
15  * (C) Copyright 2011 - 2012 Samsung Electronics
16  * EXT4 filesystem implementation in Uboot by
17  * Uma Shankar <uma.shankar@samsung.com>
18  * Manjunatha C Achar <a.manjunatha@samsung.com>
19  */
20
21 #include <common.h>
22
23 #include <command.h>
24 #include <env.h>
25 #include <env_internal.h>
26 #include <linux/stddef.h>
27 #include <malloc.h>
28 #include <memalign.h>
29 #include <search.h>
30 #include <errno.h>
31 #include <ext4fs.h>
32 #include <mmc.h>
33
34 __weak const char *env_ext4_get_intf(void)
35 {
36         return (const char *)CONFIG_ENV_EXT4_INTERFACE;
37 }
38
39 __weak const char *env_ext4_get_dev_part(void)
40 {
41         return (const char *)CONFIG_ENV_EXT4_DEVICE_AND_PART;
42 }
43
44 #ifdef CONFIG_CMD_SAVEENV
45 static int env_ext4_save(void)
46 {
47         env_t   env_new;
48         struct blk_desc *dev_desc = NULL;
49         disk_partition_t info;
50         int dev, part;
51         int err;
52         const char *ifname = env_ext4_get_intf();
53         const char *dev_and_part = env_ext4_get_dev_part();
54
55         err = env_export(&env_new);
56         if (err)
57                 return err;
58
59         part = blk_get_device_part_str(ifname, dev_and_part,
60                                        &dev_desc, &info, 1);
61         if (part < 0)
62                 return 1;
63
64         dev = dev_desc->devnum;
65         ext4fs_set_blk_dev(dev_desc, &info);
66
67         if (!ext4fs_mount(info.size)) {
68                 printf("\n** Unable to use %s %s for saveenv **\n",
69                        ifname, dev_and_part);
70                 return 1;
71         }
72
73         err = ext4fs_write(CONFIG_ENV_EXT4_FILE, (void *)&env_new,
74                            sizeof(env_t), FILETYPE_REG);
75         ext4fs_close();
76
77         if (err == -1) {
78                 printf("\n** Unable to write \"%s\" from %s%d:%d **\n",
79                         CONFIG_ENV_EXT4_FILE, ifname, dev, part);
80                 return 1;
81         }
82
83         puts("done\n");
84         return 0;
85 }
86 #endif /* CONFIG_CMD_SAVEENV */
87
88 static int env_ext4_load(void)
89 {
90         ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
91         struct blk_desc *dev_desc = NULL;
92         disk_partition_t info;
93         int dev, part;
94         int err;
95         loff_t off;
96         const char *ifname = env_ext4_get_intf();
97         const char *dev_and_part = env_ext4_get_dev_part();
98
99 #ifdef CONFIG_MMC
100         if (!strcmp(ifname, "mmc"))
101                 mmc_initialize(NULL);
102 #endif
103
104         part = blk_get_device_part_str(ifname, dev_and_part,
105                                        &dev_desc, &info, 1);
106         if (part < 0)
107                 goto err_env_relocate;
108
109         dev = dev_desc->devnum;
110         ext4fs_set_blk_dev(dev_desc, &info);
111
112         if (!ext4fs_mount(info.size)) {
113                 printf("\n** Unable to use %s %s for loading the env **\n",
114                        ifname, dev_and_part);
115                 goto err_env_relocate;
116         }
117
118         err = ext4_read_file(CONFIG_ENV_EXT4_FILE, buf, 0, CONFIG_ENV_SIZE,
119                              &off);
120         ext4fs_close();
121
122         if (err == -1) {
123                 printf("\n** Unable to read \"%s\" from %s%d:%d **\n",
124                         CONFIG_ENV_EXT4_FILE, ifname, dev, part);
125                 goto err_env_relocate;
126         }
127
128         return env_import(buf, 1);
129
130 err_env_relocate:
131         env_set_default(NULL, 0);
132
133         return -EIO;
134 }
135
136 U_BOOT_ENV_LOCATION(ext4) = {
137         .location       = ENVL_EXT4,
138         ENV_NAME("EXT4")
139         .load           = env_ext4_load,
140         .save           = env_save_ptr(env_ext4_save),
141 };