drivers: fwu: add the size parameter to the metadata access API's
In version 2 of the metadata structure, the size of the structure
cannot be determined statically at build time. The structure is now
broken into the top level structure which contains a field indicating
the total size of the structure.
Add a size parameter to the metadata access API functions to indicate
the number of bytes to be accessed. This is then used to either read
the entire structure, or only the top level structure.
Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Tested-by: Michal Simek <michal.simek@amd.com>
diff --git a/include/fwu.h b/include/fwu.h
index eb5638f..1815bd0 100644
--- a/include/fwu.h
+++ b/include/fwu.h
@@ -32,20 +32,24 @@
* @dev: FWU metadata device
* @mdata: Output FWU mdata read
* @primary: If primary or secondary copy of metadata is to be read
+ * @size: Size in bytes of the metadata to be read
*
* Return: 0 if OK, -ve on error
*/
- int (*read_mdata)(struct udevice *dev, struct fwu_mdata *mdata, bool primary);
+ int (*read_mdata)(struct udevice *dev, struct fwu_mdata *mdata,
+ bool primary, uint32_t size);
/**
* write_mdata() - Write the given FWU metadata copy
* @dev: FWU metadata device
* @mdata: Copy of the FWU metadata to write
* @primary: If primary or secondary copy of metadata is to be written
+ * @size: Size in bytes of the metadata to be written
*
* Return: 0 if OK, -ve on error
*/
- int (*write_mdata)(struct udevice *dev, struct fwu_mdata *mdata, bool primary);
+ int (*write_mdata)(struct udevice *dev, struct fwu_mdata *mdata,
+ bool primary, uint32_t size);
};
#define FWU_MDATA_VERSION 0x1
@@ -80,12 +84,14 @@
/**
* fwu_read_mdata() - Wrapper around fwu_mdata_ops.read_mdata()
*/
-int fwu_read_mdata(struct udevice *dev, struct fwu_mdata *mdata, bool primary);
+int fwu_read_mdata(struct udevice *dev, struct fwu_mdata *mdata,
+ bool primary, uint32_t size);
/**
* fwu_write_mdata() - Wrapper around fwu_mdata_ops.write_mdata()
*/
-int fwu_write_mdata(struct udevice *dev, struct fwu_mdata *mdata, bool primary);
+int fwu_write_mdata(struct udevice *dev, struct fwu_mdata *mdata,
+ bool primary, uint32_t size);
/**
* fwu_get_mdata() - Read, verify and return the FWU metadata