+#ifdef CONFIG_ENV_OFFSET_REDUND
+void env_relocate_spec(void)
+{
+#if !defined(ENV_IS_EMBEDDED)
+ struct mmc *mmc = find_mmc_device(CONFIG_SYS_MMC_ENV_DEV);
+ u32 offset1, offset2;
+ int read1_fail = 0, read2_fail = 0;
+ int crc1_ok = 0, crc2_ok = 0;
+ env_t *ep, *tmp_env1, *tmp_env2;
+ int ret;
+
+ tmp_env1 = (env_t *)malloc(CONFIG_ENV_SIZE);
+ tmp_env2 = (env_t *)malloc(CONFIG_ENV_SIZE);
+ if (tmp_env1 == NULL || tmp_env2 == NULL) {
+ puts("Can't allocate buffers for environment\n");
+ ret = 1;
+ goto err;
+ }
+
+ if (init_mmc_for_env(mmc)) {
+ ret = 1;
+ goto err;
+ }
+
+ if (mmc_get_env_addr(mmc, 0, &offset1) ||
+ mmc_get_env_addr(mmc, 1, &offset2)) {
+ ret = 1;
+ goto fini;
+ }
+
+ read1_fail = read_env(mmc, CONFIG_ENV_SIZE, offset1, tmp_env1);
+ read2_fail = read_env(mmc, CONFIG_ENV_SIZE, offset2, tmp_env2);
+
+ if (read1_fail && read2_fail)
+ puts("*** Error - No Valid Environment Area found\n");
+ else if (read1_fail || read2_fail)
+ puts("*** Warning - some problems detected "
+ "reading environment; recovered successfully\n");
+
+ crc1_ok = !read1_fail &&
+ (crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc);
+ crc2_ok = !read2_fail &&
+ (crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc);
+
+ if (!crc1_ok && !crc2_ok) {
+ ret = 1;
+ goto fini;
+ } else if (crc1_ok && !crc2_ok) {
+ gd->env_valid = 1;
+ } else if (!crc1_ok && crc2_ok) {
+ gd->env_valid = 2;
+ } else {
+ /* both ok - check serial */
+ if (tmp_env1->flags == 255 && tmp_env2->flags == 0)
+ gd->env_valid = 2;
+ else if (tmp_env2->flags == 255 && tmp_env1->flags == 0)
+ gd->env_valid = 1;
+ else if (tmp_env1->flags > tmp_env2->flags)
+ gd->env_valid = 1;
+ else if (tmp_env2->flags > tmp_env1->flags)
+ gd->env_valid = 2;
+ else /* flags are equal - almost impossible */
+ gd->env_valid = 1;
+ }
+
+ free(env_ptr);
+
+ if (gd->env_valid == 1)
+ ep = tmp_env1;
+ else
+ ep = tmp_env2;
+
+ env_flags = ep->flags;
+ env_import((char *)ep, 0);
+ ret = 0;
+
+fini:
+ fini_mmc_for_env(mmc);
+err:
+ if (ret)
+ set_default_env(NULL);
+
+ free(tmp_env1);
+ free(tmp_env2);
+#endif
+}
+#else /* ! CONFIG_ENV_OFFSET_REDUND */