[PATCH v3 18/20] doc: fwu: make changes to reflect support for FWU metadata v2

[Sughosh Ganu]

The FWU Update Agent in U-Boot supports both versions of the FWU
metadata. Make changes in the documentation to reflect this.

Signed-off-by: Sughosh Ganu <sughosh.ganu at linaro.org>
---
Changes since V2:
* Changes to indicate support for both v1 and v2 instead of only v2.

 doc/board/socionext/developerbox.rst |  7 +++++--
 doc/develop/uefi/fwu_updates.rst     | 20 +++++++++++++++-----
 2 files changed, 20 insertions(+), 7 deletions(-)

diff --git a/doc/board/socionext/developerbox.rst b/doc/board/socionext/developerbox.rst
index 46712c379b..863761c6e2 100644
--- a/doc/board/socionext/developerbox.rst
+++ b/doc/board/socionext/developerbox.rst
@@ -116,6 +116,7 @@ configs/synquacer_developerbox_defconfig enables default FWU configuration ::
  CONFIG_FWU_NUM_BANKS=2
  CONFIG_FWU_NUM_IMAGES_PER_BANK=1
  CONFIG_CMD_FWU_METADATA=y
+ CONFIG_FWU_MDATA_V2=y
 
 And build it::
 
@@ -129,7 +130,9 @@ And build it::
 By default, the CONFIG_FWU_NUM_BANKS and CONFIG_FWU_NUM_IMAGES_PER_BANKS are
 set to 2 and 1 respectively. This uses FIP (Firmware Image Package) type image
 which contains TF-A, U-Boot and OP-TEE (the OP-TEE is optional).
-You can use fiptool to compose the FIP image from those firmware images.
+You can use fiptool to compose the FIP image from those firmware
+images. There are two versions of the FWU metadata, of which the
+platform enables version 2 by default.
 
 Rebuild SCP firmware
 --------------------
@@ -194,7 +197,7 @@ following UUIDs.
 
 These UUIDs are used for making a FWU metadata image.
 
-u-boot$ ./tools/mkfwumdata -i 1 -b 2 \
+u-boot$ ./tools/mkfwumdata -v 2 -i 1 -b 2 \
 	17e86d77-41f9-4fd7-87ec-a55df9842de5,10c36d7d-ca52-b843-b7b9-f9d6c501d108,5a66a702-99fd-4fef-a392-c26e261a2828,a8f868a1-6e5c-4757-878d-ce63375ef2c0 \
 	../devbox-fwu-mdata.img
 
diff --git a/doc/develop/uefi/fwu_updates.rst b/doc/develop/uefi/fwu_updates.rst
index e4709d82b4..51e8a28efe 100644
--- a/doc/develop/uefi/fwu_updates.rst
+++ b/doc/develop/uefi/fwu_updates.rst
@@ -46,6 +46,8 @@ The feature can be enabled by specifying the following configs::
     CONFIG_FWU_NUM_BANKS=<val>
     CONFIG_FWU_NUM_IMAGES_PER_BANK=<val>
 
+    CONFIG_FWU_MDATA_V1=y or CONFIG_FWU_MDATA_V2=y
+
 in the .config file
 
 By enabling the CONFIG_CMD_FWU_METADATA config option, the
@@ -58,6 +60,14 @@ enable the FWU Multi Bank Update functionality. Please refer to the
 section :ref:`uefi_capsule_update_ref` for more details on generation
 of the UEFI capsule.
 
+FWU Metadata
+------------
+
+U-Boot supports both versions(1 and 2) of the FWU metadata defined in
+the two revisions of the specification. Support can be enabled for
+either of the two versions through a config flag. The mkfwumdata tool
+can generate metadata for both the supported versions.
+
 Setting up the device for GPT partitioned storage
 -------------------------------------------------
 
@@ -94,12 +104,12 @@ of. Each GPT partition entry in the GPT header has two GUIDs::
 * UniquePartitionGUID
 
 The PartitionTypeGUID value should correspond to the
-``image_type_uuid`` field of the FWU metadata. This field is used to
+``image_type_guid`` field of the FWU metadata. This field is used to
 identify a given type of updatable firmware image, e.g. U-Boot,
 OP-TEE, FIP etc. This GUID should also be used for specifying the
 `--guid` parameter when generating the capsule.
 
-The UniquePartitionGUID value should correspond to the ``image_uuid``
+The UniquePartitionGUID value should correspond to the ``image_guid``
 field in the FWU metadata. This GUID is used to identify images of a
 given image type in different banks.
 
@@ -108,8 +118,8 @@ metadata partitions. This would be the PartitionTypeGUID for the
 metadata partitions. Similarly, the UEFI specification defines the ESP
 GUID to be be used.
 
-When generating the metadata, the ``image_type_uuid`` and the
-``image_uuid`` values should match the *PartitionTypeGUID* and the
+When generating the metadata, the ``image_type_guid`` and the
+``image_guid`` values should match the *PartitionTypeGUID* and the
 *UniquePartitionGUID* values respectively.
 
 Performing the Update
@@ -181,5 +191,5 @@ empty capsule would be::
 Links
 -----
 
-* [1] https://developer.arm.com/documentation/den0118/a/ - FWU Specification
+* [1] https://developer.arm.com/documentation/den0118/ - FWU Specification
 * [2] https://git.codelinaro.org/linaro/dependable-boot/mbfw/uploads/6f7ddfe3be24e18d4319e108a758d02e/mbfw.pdf - Dependable Boot Specification
-- 
2.34.1