env: fat: Allow overriding interface, device and partition

For platform which can boot on different device, this allows
to override interface, device and partition from board code

Signed-off-by: He Yong <[email protected]>

1 files changed, 20 insertions, 0 deletions

diff --git a/include/env_internal.h b/include/env_internal.h
index 07c227ecc03..b704c033631 100644
--- a/include/env_internal.h
+++ b/include/env_internal.h
@@ -245,6 +245,26 @@ const char *env_ext4_get_dev_part(void);
  * Return:  an enum env_location value on success, or -ve error code.
  */
 enum env_location env_get_location(enum env_operation op, int prio);
+
+/**
+ * env_fat_get_intf() - Provide the interface for env in FAT
+ *
+ * It is a weak function allowing board to overidde the default interface for
+ * U-Boot env in FAT: CONFIG_ENV_FAT_INTERFACE
+ *
+ * Return: string of interface, empty if not supported
+ */
+const char *env_fat_get_intf(void);
+
+/**
+ * env_fat_get_dev_part() - Provide the device and partition for env in FAT
+ *
+ * It is a weak function allowing board to overidde the default device and
+ * partition used for U-Boot env in FAT: CONFIG_ENV_FAT_DEVICE_AND_PART
+ *
+ * Return: string of device and partition
+ */
+char *env_fat_get_dev_part(void);
 #endif /* DO_DEPS_ONLY */
 
 #endif /* _ENV_INTERNAL_H_ */