* The legacy NAND code saved the environment in the first NAND device i.e.,
* nand_dev_desc + 0. This is also the behaviour using the new NAND code.
*/
- int total, ret = 0;
+#ifdef CFG_ENV_OFFSET_REDUND
+int saveenv(void)
+{
++ ulong total;
++ int ret = 0;
+
+ DECLARE_GLOBAL_DATA_PTR;
+
+ env_ptr->flags++;
+ total = CFG_ENV_SIZE;
+
+ if(gd->env_valid == 1) {
+ puts ("Erasing redundant Nand...");
+ if (nand_erase(&nand_info[0],
+ CFG_ENV_OFFSET_REDUND, CFG_ENV_SIZE))
+ return 1;
+ puts ("Writing to redundant Nand... ");
+ ret = nand_write(&nand_info[0], CFG_ENV_OFFSET_REDUND, &total,
+ (u_char*) env_ptr);
+ } else {
+ puts ("Erasing Nand...");
+ if (nand_erase(&nand_info[0],
+ CFG_ENV_OFFSET, CFG_ENV_SIZE))
+ return 1;
+
+ puts ("Writing to Nand... ");
+ ret = nand_write(&nand_info[0], CFG_ENV_OFFSET, &total,
+ (u_char*) env_ptr);
+ }
+ if (ret || total != CFG_ENV_SIZE)
+ return 1;
+
+ puts ("done\n");
+ gd->env_valid = (gd->env_valid == 2 ? 1 : 2);
+ return ret;
+}
+#else /* ! CFG_ENV_OFFSET_REDUND */
int saveenv(void)
{
- int total, ret = 0;
+ ulong total;
+ int ret = 0;
puts ("Erasing Nand...");
if (nand_erase(&nand_info[0], CFG_ENV_OFFSET, CFG_ENV_SIZE))
puts ("done\n");
return ret;
}
+#endif /* CFG_ENV_OFFSET_REDUND */
#endif /* CMD_SAVEENV */
- int crc1_ok = 0, crc2_ok = 0, total;
+#ifdef CFG_ENV_OFFSET_REDUND
+void env_relocate_spec (void)
+{
+#if !defined(ENV_IS_EMBEDDED)
++ ulong total;
++ int crc1_ok = 0, crc2_ok = 0;
+ env_t *tmp_env1, *tmp_env2;
+
+ DECLARE_GLOBAL_DATA_PTR;
+
+ total = CFG_ENV_SIZE;
+
+ tmp_env1 = (env_t *) malloc(CFG_ENV_SIZE);
+ tmp_env2 = (env_t *) malloc(CFG_ENV_SIZE);
+
+ nand_read(&nand_info[0], CFG_ENV_OFFSET, &total,
+ (u_char*) tmp_env1);
+ nand_read(&nand_info[0], CFG_ENV_OFFSET_REDUND, &total,
+ (u_char*) tmp_env2);
+
+ crc1_ok = (crc32(0, tmp_env1->data, ENV_SIZE) == tmp_env1->crc);
+ crc2_ok = (crc32(0, tmp_env2->data, ENV_SIZE) == tmp_env2->crc);
+ if(!crc1_ok && !crc2_ok)
+ return use_default();
+ 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) {
+ env_ptr = tmp_env1;
+ free(tmp_env2);
+ } else {
+ env_ptr = tmp_env2;
+ free(tmp_env1);
+ }
+
+#endif /* ! ENV_IS_EMBEDDED */
+}
+#else /* ! CFG_ENV_OFFSET_REDUND */
/*
* The legacy NAND code saved the environment in the first NAND device i.e.,
* nand_dev_desc + 0. This is also the behaviour using the new NAND code.