18  * Example: ./tools/mkenvimage -s 0x8000 -p 0x0 -o env.img env.txt
36  * In case of env and env-backup partitions are too large that exceeds the limit
37  * of CONFIG_SPL_SYS_MALLOC_F_LEN. we prefer to use a static address as an env
116 	env_t *env;  in env_read()  local
120 	env = spl_env;  in env_read()
122 	env = malloc(size);  in env_read()
123 	if (!env)  in env_read()
130 	if (blk_dread(desc, blk_off, blk_cnt, (void *)env) != blk_cnt) {  in env_read()
135 	if (crc32(0, env->data, data_size) != env->crc) {  in env_read()
141 	*envp = env;  in env_read()
146 	free(env);  in env_read()
153 	env_t *env = NULL;  in envf_read()  local
162 	/* SD upgrade card: LBA0 is MBR, and LBA1 is env.img with 16KB size */  in envf_read()
169 	ret = env_read(desc, env_offset, env_size, &env);  in envf_read()
171 		ret = env_read(desc, env_offset_redund, env_size, &env);  in envf_read()
173 	return env;  in envf_read()
177 static const char *env_get_string(env_t *env, u32 size, const char *str)  in env_get_string()  argument
183 	/* Do nothing, ignore 'sys_bootargs' from env.img */  in env_get_string()
188 	dp = (const char *)env->data;  in env_get_string()
203 	} while (((ulong)dp < (ulong)env->data + env_size) && *dp);  in env_get_string()
213 	static env_t *env; /* static */  in envf_get()  local
217 	/* Only when first read env or storage is changed, need to read again. */  in envf_get()
218 	if (!env || if_type != desc->if_type || devnum != desc->devnum) {  in envf_get()
219 		env = envf_read(desc);  in envf_get()
223 	if (!env)  in envf_get()
231 	list = env_get_string(env, env_size, name);  in envf_get()
233 		ENVF_DBG("Unavailable env %s\n", name);  in envf_get()
256 			/* Do nothing, ignore 'sys_bootargs' from env.img */  in envf_init_vars()
271 	env_t *env;  in envf_load()  local
279 	env = envf_read(desc);  in envf_load()
280 	if (!env)  in envf_load()
284 		if (!himport_r(&env_htab, (char *)env->data, env_size, '\0',  in envf_load()
296 	ALLOC_CACHE_ALIGN_BUFFER(env_t, env, 1);  in envf_save()
311 	res = (char *)env->data;  in envf_save()
320 	env->crc = crc32(0, env->data, env_size - ENV_HEADER_SIZE);  in envf_save()
323 		       blk_cnt, (char *)env) != blk_cnt) {  in envf_save()
330 			       blk_cnt, (char *)env) != blk_cnt)  in envf_save()