2 * (c) Copyright 2012 by National Instruments,
3 * Joe Hershberger <joe.hershberger@ni.com>
5 * SPDX-License-Identifier: GPL-2.0+
11 #include <environment.h>
16 #include <ubi_uboot.h>
19 DECLARE_GLOBAL_DATA_PTR;
21 #ifdef CONFIG_CMD_SAVEENV
22 #ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
23 static int env_ubi_save(void)
25 ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
28 ret = env_export(env_new);
32 if (ubi_part(CONFIG_ENV_UBI_PART, NULL)) {
33 printf("\n** Cannot find mtd partition \"%s\"\n",
38 if (gd->env_valid == ENV_VALID) {
39 puts("Writing to redundant UBI... ");
40 if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME_REDUND,
41 (void *)env_new, CONFIG_ENV_SIZE)) {
42 printf("\n** Unable to write env to %s:%s **\n",
44 CONFIG_ENV_UBI_VOLUME_REDUND);
48 puts("Writing to UBI... ");
49 if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME,
50 (void *)env_new, CONFIG_ENV_SIZE)) {
51 printf("\n** Unable to write env to %s:%s **\n",
53 CONFIG_ENV_UBI_VOLUME);
60 gd->env_valid = gd->env_valid == ENV_REDUND ? ENV_VALID : ENV_REDUND;
64 #else /* ! CONFIG_SYS_REDUNDAND_ENVIRONMENT */
65 static int env_ubi_save(void)
67 ALLOC_CACHE_ALIGN_BUFFER(env_t, env_new, 1);
70 ret = env_export(env_new);
74 if (ubi_part(CONFIG_ENV_UBI_PART, NULL)) {
75 printf("\n** Cannot find mtd partition \"%s\"\n",
80 if (ubi_volume_write(CONFIG_ENV_UBI_VOLUME, (void *)env_new,
82 printf("\n** Unable to write env to %s:%s **\n",
83 CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME);
90 #endif /* CONFIG_SYS_REDUNDAND_ENVIRONMENT */
91 #endif /* CONFIG_CMD_SAVEENV */
93 #ifdef CONFIG_SYS_REDUNDAND_ENVIRONMENT
94 static int env_ubi_load(void)
96 ALLOC_CACHE_ALIGN_BUFFER(char, env1_buf, CONFIG_ENV_SIZE);
97 ALLOC_CACHE_ALIGN_BUFFER(char, env2_buf, CONFIG_ENV_SIZE);
98 env_t *tmp_env1, *tmp_env2;
101 * In case we have restarted u-boot there is a chance that buffer
102 * contains old environment (from the previous boot).
103 * If UBI volume is zero size, ubi_volume_read() doesn't modify the
105 * We need to clear buffer manually here, so the invalid CRC will
106 * cause setting default environment as expected.
108 memset(env1_buf, 0x0, CONFIG_ENV_SIZE);
109 memset(env2_buf, 0x0, CONFIG_ENV_SIZE);
111 tmp_env1 = (env_t *)env1_buf;
112 tmp_env2 = (env_t *)env2_buf;
114 if (ubi_part(CONFIG_ENV_UBI_PART, NULL)) {
115 printf("\n** Cannot find mtd partition \"%s\"\n",
116 CONFIG_ENV_UBI_PART);
117 set_default_env(NULL);
121 if (ubi_volume_read(CONFIG_ENV_UBI_VOLUME, (void *)tmp_env1,
123 printf("\n** Unable to read env from %s:%s **\n",
124 CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME);
127 if (ubi_volume_read(CONFIG_ENV_UBI_VOLUME_REDUND, (void *)tmp_env2,
129 printf("\n** Unable to read redundant env from %s:%s **\n",
130 CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME_REDUND);
133 env_import_redund((char *)tmp_env1, (char *)tmp_env2);
137 #else /* ! CONFIG_SYS_REDUNDAND_ENVIRONMENT */
138 static int env_ubi_load(void)
140 ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
143 * In case we have restarted u-boot there is a chance that buffer
144 * contains old environment (from the previous boot).
145 * If UBI volume is zero size, ubi_volume_read() doesn't modify the
147 * We need to clear buffer manually here, so the invalid CRC will
148 * cause setting default environment as expected.
150 memset(buf, 0x0, CONFIG_ENV_SIZE);
152 if (ubi_part(CONFIG_ENV_UBI_PART, NULL)) {
153 printf("\n** Cannot find mtd partition \"%s\"\n",
154 CONFIG_ENV_UBI_PART);
155 set_default_env(NULL);
159 if (ubi_volume_read(CONFIG_ENV_UBI_VOLUME, buf, CONFIG_ENV_SIZE)) {
160 printf("\n** Unable to read env from %s:%s **\n",
161 CONFIG_ENV_UBI_PART, CONFIG_ENV_UBI_VOLUME);
162 set_default_env(NULL);
170 #endif /* CONFIG_SYS_REDUNDAND_ENVIRONMENT */
172 U_BOOT_ENV_LOCATION(ubi) = {
173 .location = ENVL_UBI,
174 .load = env_ubi_load,
175 .save = env_save_ptr(env_ubi_save),