Project import generated by Copybara.
GitOrigin-RevId: 7a69795ca0509afec3cb66e35d81ea6b461e50ce
diff --git a/common/env_fat.c b/common/env_fat.c
new file mode 100644
index 0000000..e4c8489
--- /dev/null
+++ b/common/env_fat.c
@@ -0,0 +1,109 @@
+/*
+ * (c) Copyright 2011 by Tigris Elektronik GmbH
+ *
+ * Author:
+ * Maximilian Schwerin <mvs@tigris.de>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+
+#include <command.h>
+#include <environment.h>
+#include <linux/stddef.h>
+#include <malloc.h>
+#include <search.h>
+#include <errno.h>
+#include <fat.h>
+#include <mmc.h>
+
+char *env_name_spec = "FAT";
+
+env_t *env_ptr;
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int env_init(void)
+{
+ /* use default */
+ gd->env_addr = (ulong)&default_environment[0];
+ gd->env_valid = 1;
+
+ return 0;
+}
+
+#ifdef CONFIG_CMD_SAVEENV
+int saveenv(void)
+{
+ env_t env_new;
+ block_dev_desc_t *dev_desc = NULL;
+ disk_partition_t info;
+ int dev, part;
+ int err;
+ loff_t size;
+
+ err = env_export(&env_new);
+ if (err)
+ return err;
+
+ part = get_device_and_partition(FAT_ENV_INTERFACE,
+ FAT_ENV_DEVICE_AND_PART,
+ &dev_desc, &info, 1);
+ if (part < 0)
+ return 1;
+
+ dev = dev_desc->dev;
+ if (fat_set_blk_dev(dev_desc, &info) != 0) {
+ printf("\n** Unable to use %s %d:%d for saveenv **\n",
+ FAT_ENV_INTERFACE, dev, part);
+ return 1;
+ }
+
+ err = file_fat_write(FAT_ENV_FILE, (void *)&env_new, 0, sizeof(env_t),
+ &size);
+ if (err == -1) {
+ printf("\n** Unable to write \"%s\" from %s%d:%d **\n",
+ FAT_ENV_FILE, FAT_ENV_INTERFACE, dev, part);
+ return 1;
+ }
+
+ puts("done\n");
+ return 0;
+}
+#endif /* CONFIG_CMD_SAVEENV */
+
+void env_relocate_spec(void)
+{
+ ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE);
+ block_dev_desc_t *dev_desc = NULL;
+ disk_partition_t info;
+ int dev, part;
+ int err;
+
+ part = get_device_and_partition(FAT_ENV_INTERFACE,
+ FAT_ENV_DEVICE_AND_PART,
+ &dev_desc, &info, 1);
+ if (part < 0)
+ goto err_env_relocate;
+
+ dev = dev_desc->dev;
+ if (fat_set_blk_dev(dev_desc, &info) != 0) {
+ printf("\n** Unable to use %s %d:%d for loading the env **\n",
+ FAT_ENV_INTERFACE, dev, part);
+ goto err_env_relocate;
+ }
+
+ err = file_fat_read(FAT_ENV_FILE, buf, CONFIG_ENV_SIZE);
+ if (err == -1) {
+ printf("\n** Unable to read \"%s\" from %s%d:%d **\n",
+ FAT_ENV_FILE, FAT_ENV_INTERFACE, dev, part);
+ goto err_env_relocate;
+ }
+
+ env_import(buf, 1);
+ return;
+
+err_env_relocate:
+ set_default_env(NULL);
+}
