+/**
+ * mrccache_reserve() - reserve MRC data on the stack
+ *
+ * This copies MRC data pointed by gd->arch.mrc_output to a new place on the
+ * stack with length gd->arch.mrc_output_len, and updates gd->arch.mrc_output
+ * to point to the new place once the migration is done.
+ *
+ * This routine should be called by reserve_arch() before U-Boot is relocated
+ * when MRC cache is enabled.
+ *
+ * @return 0 always
+ */
+int mrccache_reserve(void);
+
+/**
+ * mrccache_get_region() - get MRC region on the SPI flash
+ *
+ * This gets MRC region whose offset and size are described in the device tree
+ * as a subnode to the SPI flash. If a non-NULL device pointer is supplied,
+ * this also probes the SPI flash device and returns its device pointer for
+ * the caller to use later.
+ *
+ * Be careful when calling this routine with a non-NULL device pointer:
+ * - driver model initialization must be complete
+ * - calling in the pre-relocation phase may bring some side effects during
+ * the SPI flash device probe (eg: for SPI controllers on a PCI bus, it
+ * triggers PCI bus enumeration during which insufficient memory issue
+ * might be exposed and it causes subsequent SPI flash probe fails).
+ *
+ * @devp: Returns pointer to the SPI flash device
+ * @entry: Position and size of MRC cache in SPI flash
+ * @return 0 if success, -ENOENT if SPI flash node does not exist in the
+ * device tree, -EPERM if MRC region subnode does not exist in the device
+ * tree, -EINVAL if MRC region properties format is incorrect, other error
+ * if SPI flash probe failed.
+ */
+int mrccache_get_region(struct udevice **devp, struct mrc_region *entry);
+
+/**
+ * mrccache_save() - save MRC data to the SPI flash
+ *
+ * This saves MRC data stored previously by gd->arch.mrc_output to a proper
+ * place within the MRC region on the SPI flash.
+ *
+ * @return 0 if saved to SPI flash successfully, other error if failed
+ */
+int mrccache_save(void);
+