Include bios registry fields in bios API

Provide the fields in the BIOS setting API -
``/v1/nodes/{node}/bios/{setting}``, and in the BIOS setting list API
when details are requested - ``/v1/nodes/<node>/bios?detail=True``.

Story: #2008571
Task: #42483
Change-Id: Ie86ec57e428e2bb2efd099a839105e51a94824ab

24 files changed, 613 insertions, 47 deletions

diff --git a/api-ref/source/baremetal-api-v1-nodes-bios.inc b/api-ref/source/baremetal-api-v1-nodes-bios.inc
index 4602b134b..887e2029a 100644
--- a/api-ref/source/baremetal-api-v1-nodes-bios.inc
+++ b/api-ref/source/baremetal-api-v1-nodes-bios.inc
@@ -19,6 +19,11 @@ List all Bios settings by Node
 
 Return a list of Bios settings associated with ``node_ident``.
 
+.. versionadded:: 1.74
+  Added additional fields from bios registry which can be retrieved using
+  ``?detail=True`` (see detailed response below).
+  Added ``fields`` selector to query for particular fields.
+
 Normal response code: 200
 
 Error codes: 404
@@ -29,6 +34,8 @@ Request
 .. rest_parameters:: parameters.yaml
 
     - node_ident: node_ident
+    - fields: fields
+    - detail: detail
 
 Response
 --------
@@ -46,6 +53,55 @@ Response
 
 .. literalinclude:: samples/node-bios-list-response.json
 
+List detailed Bios settings by Node
+===================================
+
+.. rest_method:: GET /v1/nodes/{node_ident}/bios/?detail=True
+
+Return a list of detailed Bios settings associated with ``node_ident``.
+The detailed list includes the BIOS Attribute Registry information
+retrieved via Redfish.
+
+.. versionadded:: 1.74
+  Introduced
+
+
+Normal response code: 200
+
+Error codes: 404
+
+Request
+-------
+
+.. rest_parameters:: parameters.yaml
+
+    - node_ident: node_ident
+
+Response
+--------
+
+.. rest_parameters:: parameters.yaml
+
+    - bios: bios_settings
+    - created_at: created_at
+    - updated_at: updated_at
+    - links: links
+    - name: bios_setting_name
+    - value: bios_setting_value
+    - attribute_type: bios_setting_attribute_type
+    - allowable_values: bios_setting_allowable_values
+    - lower_bound: bios_setting_lower_bound
+    - max_length: bios_setting_max_length
+    - min_length: bios_setting_min_length
+    - read_only: bios_setting_read_only
+    - reset_required: bios_setting_reset_required
+    - unique: bios_setting_unique
+    - upper_bound: bios_setting_upper_bound
+
+**Example list of a Node's Bios settings:**
+
+.. literalinclude:: samples/node-bios-list-details-response.json
+
 
 Show single Bios setting of a Node
 ==================================
@@ -55,6 +111,9 @@ Show single Bios setting of a Node
 Return the content of the specific bios ``bios_setting`` associated with
 ``node_ident``.
 
+. versionadded:: 1.74
+  Introduced fields from the BIOS registry.
+
 Normal response code: 200
 
 Error codes: 404
@@ -78,6 +137,15 @@ Response
     - links: links
     - name: bios_setting_name
     - value: bios_setting_value
+    - attribute_type: bios_setting_attribute_type
+    - allowable_values: bios_setting_allowable_values
+    - lower_bound: bios_setting_lower_bound
+    - max_length: bios_setting_max_length
+    - min_length: bios_setting_min_length
+    - read_only: bios_setting_read_only
+    - reset_required: bios_setting_reset_required
+    - unique: bios_setting_unique
+    - upper_bound: bios_setting_upper_bound
 
 **Example details of a Node's Bios setting details:**
 
diff --git a/api-ref/source/parameters.yaml b/api-ref/source/parameters.yaml
index 5129333f0..ef9b1b975 100644
--- a/api-ref/source/parameters.yaml
+++ b/api-ref/source/parameters.yaml
@@ -505,12 +505,75 @@ bios_interface:
   in: body
   required: true
   type: string
+bios_setting_allowable_values:
+  description: |
+    A list of allowable values when the attribute_type is "Enumeration",
+    otherwise None.
+  in: body
+  required: true
+  type: array
+bios_setting_attribute_type:
+  description: |
+    A string describing the type of the Bios setting - "Enumeration",
+    "Integer", "String", "Boolean", or "Password".  May be None.
+  in: body
+  required: true
+  type: string
+bios_setting_lower_bound:
+  description: |
+    The lowest allowed value when attribute_type is "Integer".
+    May be None.
+  in: body
+  required: true
+  type: integer
+bios_setting_max_length:
+  description: |
+    The maximum length when attribute_type is "String".
+    May be None.
+  in: body
+  required: true
+  type: integer
+bios_setting_min_length:
+  description: |
+    The minimum length when attribute_type is "String".
+    May be None.
+  in: body
+  required: true
+  type: integer
 bios_setting_name:
   description: |
     The name of a Bios setting for a Node, eg. "virtualization".
   in: body
   required: true
   type: string
+bios_setting_read_only:
+  description: |
+    This Bios seting is read only and can't be changed.
+    May be None.
+  in: body
+  required: true
+  type: boolean
+bios_setting_reset_required:
+  description: |
+    After setting this Bios setting a node reboot is required.
+    May be None.
+  in: body
+  required: true
+  type: boolean
+bios_setting_unique:
+  description: |
+    This Bios setting is unique to this node.
+    May be None.
+  in: body
+  required: true
+  type: boolean
+bios_setting_upper_bound:
+  description: |
+    The lowest allowed value when attribute_type is "Integer".
+    May be None.
+  in: body
+  required: true
+  type: integer
 bios_setting_value:
   description: |
     The value of a Bios setting for a Node, eg. "on".
@@ -520,7 +583,9 @@ bios_setting_value:
 bios_settings:
   description: |
     Optional list of one or more Bios settings. It includes following fields
-    "created_at", "updated_at", "links", "name", "value".
+    "created_at", "updated_at", "links", "name", "value", "attribute_type",
+    "allowable_values", "lower_bound", "max_length", "min_length", "read_only",
+    "reset_required", "unique", "upper_bound"
   in: body
   required: true
   type: array
diff --git a/api-ref/source/samples/node-bios-detail-response.json b/api-ref/source/samples/node-bios-detail-response.json
index a7b01028c..195f89721 100644
--- a/api-ref/source/samples/node-bios-detail-response.json
+++ b/api-ref/source/samples/node-bios-detail-response.json
@@ -12,7 +12,16 @@
         "rel": "bookmark"
       }
     ],
-    "name": "virtualization",
-    "value": "on"
+    "name": "Virtualization",
+    "value": "Enabled",
+    "attribute_type": "Enumeration",
+    "allowable_values": ["Enabled", "Disabled"],
+    "lower_bound": None,
+    "max_length": None,
+    "min_length": None,
+    "read_only": false,
+    "reset_required": None,
+    "unique": None,
+    "upper_bound": None
   }
 }
diff --git a/api-ref/source/samples/node-bios-list-details-response.json b/api-ref/source/samples/node-bios-list-details-response.json
new file mode 100644
index 000000000..52a48b3b1
--- /dev/null
+++ b/api-ref/source/samples/node-bios-list-details-response.json
@@ -0,0 +1,30 @@
+{
+  "bios": [
+    {
+      "created_at": "2016-08-18T22:28:49.653974+00:00",
+      "updated_at": "2016-08-18T22:28:49.653974+00:00",
+      "links": [
+        {
+          "href": "http://127.0.0.1:6385/v1/nodes/6d85703a-565d-469a-96ce-30b6de53079d/bios/virtualization",
+          "rel": "self"
+        },
+        {
+          "href": "http://127.0.0.1:6385/v1/nodes/6d85703a-565d-469a-96ce-30b6de53079d/bios/virtualization",
+          "rel": "bookmark"
+        }
+      ],
+      "name": "Virtualization",
+      "value": "Enabled",
+      "attribute_type": "Enumeration",
+      "allowable_values": ["Enabled", "Disabled"],
+      "lower_bound": None,
+      "max_length": None,
+      "min_length": None,
+      "read_only": false,
+      "reset_required": None,
+      "unique": None,
+      "upper_bound": None
+    }
+  ]
+}
+
diff --git a/api-ref/source/samples/node-bios-list-response.json b/api-ref/source/samples/node-bios-list-response.json
index 87d5e9c89..8255c240e 100644
--- a/api-ref/source/samples/node-bios-list-response.json
+++ b/api-ref/source/samples/node-bios-list-response.json
@@ -13,8 +13,8 @@
           "rel": "bookmark"
         }
       ],
-      "name": "virtualization",
-      "value": "on"
+      "name": "Virtualization",
+      "value": "Enabled"
     }
   ]
 }
diff --git a/doc/source/contributor/webapi-version-history.rst b/doc/source/contributor/webapi-version-history.rst
index 37adc74cf..10816c529 100644
--- a/doc/source/contributor/webapi-version-history.rst
+++ b/doc/source/contributor/webapi-version-history.rst
@@ -2,8 +2,19 @@
 REST API Version History
 ========================
 
+1.74 (Xena)
+----------------------
+
+Add support for BIOS registry fields which include details about the BIOS
+setting. Included in the ``/v1/nodes/{node_ident}/bios/{setting}`` response.
+Add a new selector to include the fields in the BIOS settings list:
+* ``/v1/nodes/{node_ident}/bios/?detail=``
+Also add a fields selector to the the BIOS settings list:
+* ``/v1/nodes/{node_ident}/bios/?fields=``
+
 1.73 (Xena)
 ----------------------
+
 Add a new ``deploy`` verb as an alias to ``active`` and
 ``undeploy`` verb as an alias to ``deleted``.
 
diff --git a/ironic/api/controllers/v1/bios.py b/ironic/api/controllers/v1/bios.py
index 05fc46d8a..8a3adf3b7 100644
--- a/ironic/api/controllers/v1/bios.py
+++ b/ironic/api/controllers/v1/bios.py
@@ -25,23 +25,34 @@ from ironic import objects
 
 METRICS = metrics_utils.get_metrics_logger(__name__)
 
+_DEFAULT_RETURN_FIELDS = ('name', 'value')
+_DEFAULT_FIELDS_WITH_REGISTRY = ('name', 'value', 'attribute_type',
+                                 'allowable_values', 'lower_bound',
+                                 'max_length', 'min_length', 'read_only',
+                                 'reset_required', 'unique', 'upper_bound')
 
-def convert_with_links(rpc_bios, node_uuid):
+
+def convert_with_links(rpc_bios, node_uuid, detail=None, fields=None):
     """Build a dict containing a bios setting value."""
+
+    if detail:
+        fields = _DEFAULT_FIELDS_WITH_REGISTRY
+
     bios = api_utils.object_to_dict(
         rpc_bios,
         include_uuid=False,
-        fields=('name', 'value'),
+        fields=fields,
         link_resource='nodes',
         link_resource_args="%s/bios/%s" % (node_uuid, rpc_bios.name),
     )
     return bios
 
 
-def collection_from_list(node_ident, bios_settings):
+def collection_from_list(node_ident, bios_settings, detail=None, fields=None):
     bios_list = []
     for bios_setting in bios_settings:
-        bios_list.append(convert_with_links(bios_setting, node_ident))
+        bios_list.append(convert_with_links(bios_setting, node_ident,
+                         detail, fields))
     return {'bios': bios_list}
 
 
@@ -54,14 +65,23 @@ class NodeBiosController(rest.RestController):
 
     @METRICS.timer('NodeBiosController.get_all')
     @method.expose()
-    def get_all(self):
+    @args.validate(fields=args.string_list, detail=args.boolean)
+    def get_all(self, detail=None, fields=None):
         """List node bios settings."""
         node = api_utils.check_node_policy_and_retrieve(
             'baremetal:node:bios:get', self.node_ident)
 
+        # The BIOS detail and fields query were added in a later
+        # version, check if they are valid based on version
+        allow_query = api_utils.allow_query_bios
+        fields = api_utils.get_request_return_fields(fields, detail,
+                                                     _DEFAULT_RETURN_FIELDS,
+                                                     allow_query, allow_query)
+
         settings = objects.BIOSSettingList.get_by_node_id(
             api.request.context, node.id)
-        return collection_from_list(self.node_ident, settings)
+        return collection_from_list(self.node_ident, settings,
+                                    detail, fields)
 
     @METRICS.timer('NodeBiosController.get_one')
     @method.expose()
@@ -81,4 +101,11 @@ class NodeBiosController(rest.RestController):
             raise exception.BIOSSettingNotFound(node=node.uuid,
                                                 name=setting_name)
 
-        return {setting_name: convert_with_links(setting, node.uuid)}
+        # Return fields based on version
+        if api_utils.allow_query_bios():
+            fields = _DEFAULT_FIELDS_WITH_REGISTRY
+        else:
+            fields = _DEFAULT_RETURN_FIELDS
+
+        return {setting_name: convert_with_links(setting, node.uuid,
+                fields=fields)}
diff --git a/ironic/api/controllers/v1/utils.py b/ironic/api/controllers/v1/utils.py
index 83c2a1602..4a753c4d1 100644
--- a/ironic/api/controllers/v1/utils.py
+++ b/ironic/api/controllers/v1/utils.py
@@ -1321,18 +1321,27 @@ def allow_detail_query():
     return api.request.version.minor >= versions.MINOR_43_ENABLE_DETAIL_QUERY
 
 
+def allow_query_bios():
+    """Check if BIOS queries should be allowed based on version"""
+
+    return api.request.version.minor >= versions.MINOR_74_BIOS_REGISTRY
+
+
 def allow_reset_interfaces():
     """Check if passing a reset_interfaces query string is allowed."""
     return api.request.version.minor >= versions.MINOR_45_RESET_INTERFACES
 
 
-def get_request_return_fields(fields, detail, default_fields):
+def get_request_return_fields(fields, detail, default_fields,
+                              check_detail_version=allow_detail_query,
+                              check_fields_version=None):
     """Calculate fields to return from an API request
 
     The fields query and detail=True query can not be passed into a request at
     the same time. To use the detail query we need to be on a version of the
-    API greater than 1.43. This function raises an InvalidParameterValue
-    exception if either of these conditions are not met.
+    API greater than expected, likewise some APIs require a certain version for
+    the fields query. This function raises an InvalidParameterValue exception
+    if any of these conditions are not met.
 
     If these checks pass then this function will return either the fields
     passed in or the default fields provided.
@@ -1341,15 +1350,24 @@ def get_request_return_fields(fields, detail, default_fields):
     :param detail: The detail query passed into the API request.
     :param default_fields: The default fields to return if fields=None and
         detail=None.
+    :param check_detail_version: Function to check if detail query is allowed
+        based on the version.
+    :param check_fields_version: Function to check if fields query is allowed
+        based on the version.
     :raises: InvalidParameterValue if there is an invalid combination of query
         strings or API version.
     :returns: 'fields' passed in value or 'default_fields'
     """
 
-    if detail is not None and not allow_detail_query():
+    if detail is not None and not check_detail_version():
         raise exception.InvalidParameterValue(
             "Invalid query parameter ?detail=%s received." % detail)
 
+    if (fields is not None and callable(check_fields_version)
+            and not check_fields_version()):
+        raise exception.InvalidParameterValue(
+            "Invalid query parameter ?fields=%s received." % fields)
+
     if fields is not None and detail:
         raise exception.InvalidParameterValue(
             "Can not specify ?detail=True and fields in the same request.")
diff --git a/ironic/api/controllers/v1/versions.py b/ironic/api/controllers/v1/versions.py
index 97e03485e..677a27475 100644
--- a/ironic/api/controllers/v1/versions.py
+++ b/ironic/api/controllers/v1/versions.py
@@ -111,6 +111,7 @@ BASE_VERSION = 1
 # v1.71: Add signifier for Scope based roles.
 # v1.72: Add agent_status and agent_status_message to /v1/heartbeat
 # v1.73: Add support for deploy and undeploy verbs
+# v1.74: Add bios registry to /v1/nodes/{node}/bios/{setting}
 
 MINOR_0_JUNO = 0
 MINOR_1_INITIAL_VERSION = 1
@@ -186,6 +187,7 @@ MINOR_70_CLEAN_DISABLE_RAMDISK = 70
 MINOR_71_RBAC_SCOPES = 71
 MINOR_72_HEARTBEAT_STATUS = 72
 MINOR_73_DEPLOY_UNDEPLOY_VERBS = 73
+MINOR_74_BIOS_REGISTRY = 74
 
 # When adding another version, update:
 # - MINOR_MAX_VERSION
@@ -193,7 +195,7 @@ MINOR_73_DEPLOY_UNDEPLOY_VERBS = 73
 #   explanation of what changed in the new version
 # - common/release_mappings.py, RELEASE_MAPPING['master']['api']
 
-MINOR_MAX_VERSION = MINOR_73_DEPLOY_UNDEPLOY_VERBS
+MINOR_MAX_VERSION = MINOR_74_BIOS_REGISTRY
 
 # String representations of the minor and maximum versions
 _MIN_VERSION_STRING = '{}.{}'.format(BASE_VERSION, MINOR_1_INITIAL_VERSION)
diff --git a/ironic/common/release_mappings.py b/ironic/common/release_mappings.py
index 526f424f7..29cde3fc0 100644
--- a/ironic/common/release_mappings.py
+++ b/ironic/common/release_mappings.py
@@ -320,10 +320,11 @@ RELEASE_MAPPING = {
         }
     },
     'master': {
-        'api': '1.73',
+        'api': '1.74',
         'rpc': '1.54',
         'objects': {
             'Allocation': ['1.1'],
+            'BIOSSetting': ['1.1'],
             'Node': ['1.35'],
             'Conductor': ['1.3'],
             'Chassis': ['1.3'],
diff --git a/ironic/conductor/utils.py b/ironic/conductor/utils.py
index 2a3e6b4f8..cbadd091c 100644
--- a/ironic/conductor/utils.py
+++ b/ironic/conductor/utils.py
@@ -1385,8 +1385,7 @@ def store_agent_certificate(node, agent_verify_ca):
 def node_cache_bios_settings(task, node):
     """Do caching of bios settings if supported by driver"""
     try:
-        LOG.debug('BF getting BIOS info for node %s',
-                  node.uuid)
+        LOG.debug('Getting BIOS info for node %s', node.uuid)
         task.driver.bios.cache_bios_settings(task)
     except exception.UnsupportedDriverExtension:
         LOG.warning('BIOS settings are not supported for node %s, '
diff --git a/ironic/db/api.py b/ironic/db/api.py
index da0838478..0845fcd55 100644
--- a/ironic/db/api.py
+++ b/ironic/db/api.py
@@ -1054,10 +1054,12 @@ class Connection(object, metaclass=abc.ABCMeta):
                           {
                            'name': String,
                            'value': String,
+                           additional settings from BIOS registry
                           },
                           {
                            'name': String,
                            'value': String,
+                           additional settings from BIOS registry
                           },
                           ...
                         ]
@@ -1081,10 +1083,12 @@ class Connection(object, metaclass=abc.ABCMeta):
                           {
                            'name': String,
                            'value': String,
+                           additional settings from BIOS registry
                           },
                           {
                            'name': String,
                            'value': String,
+                           additional settings from BIOS registry
                           },
                           ...
                         ]
diff --git a/ironic/db/sqlalchemy/alembic/versions/2bbd96b6ccb9_add_bios_fields_from_registry.py b/ironic/db/sqlalchemy/alembic/versions/2bbd96b6ccb9_add_bios_fields_from_registry.py
new file mode 100644
index 000000000..204bc46fd
--- /dev/null
+++ b/ironic/db/sqlalchemy/alembic/versions/2bbd96b6ccb9_add_bios_fields_from_registry.py
@@ -0,0 +1,46 @@
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+"""Add fields from BIOS registry
+
+Revision ID: 2bbd96b6ccb9
+Revises: ac00b586ab95
+Create Date: 2021-04-29 08:52:23.938863
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+# revision identifiers, used by Alembic.
+revision = '2bbd96b6ccb9'
+down_revision = 'ac00b586ab95'
+
+
+def upgrade():
+    op.add_column('bios_settings', sa.Column('attribute_type',
+                  sa.String(length=255), nullable=True))
+    op.add_column('bios_settings', sa.Column('allowable_values',
+                  sa.Text(), nullable=True))
+    op.add_column('bios_settings', sa.Column('lower_bound',
+                  sa.Integer(), nullable=True))
+    op.add_column('bios_settings', sa.Column('max_length',
+                  sa.Integer(), nullable=True))
+    op.add_column('bios_settings', sa.Column('min_length',
+                  sa.Integer(), nullable=True))
+    op.add_column('bios_settings', sa.Column('read_only',
+                  sa.Boolean(), nullable=True))
+    op.add_column('bios_settings', sa.Column('reset_required',
+                  sa.Boolean(), nullable=True))
+    op.add_column('bios_settings', sa.Column('unique',
+                  sa.Boolean(), nullable=True))
+    op.add_column('bios_settings', sa.Column('upper_bound',
+                  sa.Integer(), nullable=True))
diff --git a/ironic/db/sqlalchemy/api.py b/ironic/db/sqlalchemy/api.py
index 702755e97..6f027c96a 100644
--- a/ironic/db/sqlalchemy/api.py
+++ b/ironic/db/sqlalchemy/api.py
@@ -1675,6 +1675,15 @@ class Connection(api.Connection):
                         node_id=node_id,
                         name=setting['name'],
                         value=setting['value'],
+                        attribute_type=setting.get('attribute_type'),
+                        allowable_values=setting.get('allowable_values'),
+                        lower_bound=setting.get('lower_bound'),
+                        max_length=setting.get('max_length'),
+                        min_length=setting.get('min_length'),
+                        read_only=setting.get('read_only'),
+                        reset_required=setting.get('reset_required'),
+                        unique=setting.get('unique'),
+                        upper_bound=setting.get('upper_bound'),
                         version=version)
                     bios_settings.append(bios_setting)
                     session.add(bios_setting)
@@ -1695,6 +1704,18 @@ class Connection(api.Connection):
                         node_id=node_id, name=setting['name'])
                     ref = query.one()
                     ref.update({'value': setting['value'],
+                                'attribute_type':
+                                setting.get('attribute_type'),
+                                'allowable_values':
+                                setting.get('allowable_values'),
+                                'lower_bound': setting.get('lower_bound'),
+                                'max_length': setting.get('max_length'),
+                                'min_length': setting.get('min_length'),
+                                'read_only': setting.get('read_only'),
+                                'reset_required':
+                                setting.get('reset_required'),
+                                'unique': setting.get('unique'),
+                                'upper_bound': setting.get('upper_bound'),
                                 'version': version})
                     bios_settings.append(ref)
                 session.flush()
diff --git a/ironic/db/sqlalchemy/models.py b/ironic/db/sqlalchemy/models.py
index ef85b5d6d..96c18af26 100644
--- a/ironic/db/sqlalchemy/models.py
+++ b/ironic/db/sqlalchemy/models.py
@@ -339,6 +339,15 @@ class BIOSSetting(Base):
                      primary_key=True, nullable=False)
     name = Column(String(255), primary_key=True, nullable=False)
     value = Column(Text, nullable=True)
+    attribute_type = Column(String(255), nullable=True)
+    allowable_values = Column(db_types.JsonEncodedList, nullable=True)
+    lower_bound = Column(Integer, nullable=True)
+    max_length = Column(Integer, nullable=True)
+    min_length = Column(Integer, nullable=True)
+    read_only = Column(Boolean, nullable=True)
+    reset_required = Column(Boolean, nullable=True)
+    unique = Column(Boolean, nullable=True)
+    upper_bound = Column(Integer, nullable=True)
 
 
 class Allocation(Base):
diff --git a/ironic/objects/bios.py b/ironic/objects/bios.py
index c7f705ef7..cb6718074 100644
--- a/ironic/objects/bios.py
+++ b/ironic/objects/bios.py
@@ -13,6 +13,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from oslo_utils import versionutils
 from oslo_versionedobjects import base as object_base
 
 from ironic.db import api as dbapi
@@ -23,14 +24,29 @@ from ironic.objects import fields as object_fields
 @base.IronicObjectRegistry.register
 class BIOSSetting(base.IronicObject):
     # Version 1.0: Initial version
-    VERSION = '1.0'
+    # Version 1.1: Added registry
+    VERSION = '1.1'
 
     dbapi = dbapi.get_instance()
 
+    registry_fields = ('attribute_type', 'allowable_values', 'lower_bound',
+                       'max_length', 'min_length', 'read_only',
+                       'reset_required', 'unique', 'upper_bound')
+
     fields = {
         'node_id': object_fields.StringField(nullable=False),
         'name': object_fields.StringField(nullable=False),
         'value': object_fields.StringField(nullable=True),
+        'attribute_type': object_fields.StringField(nullable=True),
+        'allowable_values': object_fields.ListOfStringsField(
+            nullable=True),
+        'lower_bound': object_fields.IntegerField(nullable=True),
+        'max_length': object_fields.IntegerField(nullable=True),
+        'min_length': object_fields.IntegerField(nullable=True),
+        'read_only': object_fields.BooleanField(nullable=True),
+        'reset_required': object_fields.BooleanField(nullable=True),
+        'unique': object_fields.BooleanField(nullable=True),
+        'upper_bound': object_fields.IntegerField(nullable=True)
     }
 
     # NOTE(xek): We don't want to enable RPC on this call just yet. Remotable
@@ -50,9 +66,12 @@ class BIOSSetting(base.IronicObject):
         :raises: BIOSSettingAlreadyExists if the setting record already exists.
         """
         values = self.do_version_changes_for_db()
-        setting = [{'name': values['name'], 'value': values['value']}]
+        settings = {'name': values['name'], 'value': values['value']}
+        for r in self.registry_fields:
+            settings[r] = values.get(r)
+
         db_bios_setting = self.dbapi.create_bios_setting_list(
-            values['node_id'], setting, values['version'])
+            values['node_id'], [settings], values['version'])
         self._from_db_object(self._context, self, db_bios_setting[0])
 
     # NOTE(xek): We don't want to enable RPC on this call just yet. Remotable
@@ -72,9 +91,13 @@ class BIOSSetting(base.IronicObject):
         :raises: BIOSSettingNotFound if the bios setting name is not found.
         """
         values = self.do_version_changes_for_db()
-        setting = [{'name': values['name'], 'value': values['value']}]
+
+        settings = {'name': values['name'], 'value': values['value']}
+        for r in self.registry_fields:
+            settings[r] = values.get(r)
+
         updated_bios_setting = self.dbapi.update_bios_setting_list(
-            values['node_id'], setting, values['version'])
+            values['node_id'], [settings], values['version'])
         self._from_db_object(self._context, self, updated_bios_setting[0])
 
     # NOTE(xek): We don't want to enable RPC on this call just yet. Remotable
@@ -111,6 +134,40 @@ class BIOSSetting(base.IronicObject):
         """
         cls.dbapi.delete_bios_setting_list(node_id, [name])
 
+    def _convert_to_version(self, target_version,
+                            remove_unavailable_fields=True):
+        """Convert to the target version.
+
+        Convert the object to the target version. The target version may be
+        the same, older, or newer than the version of the object. This is
+        used for DB interactions as well as for serialization/deserialization.
+
+        Version 1.74: remove registry field for unsupported versions if
+            remove_unavailable_fields is True.
+
+        :param target_version: the desired version of the object
+        :param remove_unavailable_fields: True to remove fields that are
+            unavailable in the target version; set this to True when
+            (de)serializing. False to set the unavailable fields to appropriate
+            values; set this to False for DB interactions.
+        """
+        target_version = versionutils.convert_version_to_tuple(target_version)
+
+        for field in self.get_registry_fields():
+            field_is_set = self.obj_attr_is_set(field)
+            if target_version >= (1, 74):
+                # target version supports the major/minor specified
+                if not field_is_set:
+                    # set it to its default value if it is not set
+                    setattr(self, field, None)
+            elif field_is_set:
+                # target version does not support the field, and it is set
+                if remove_unavailable_fields:
+                    # (De)serialising: remove unavailable fields
+                    delattr(self, field)
+                elif self.registry:
+                    setattr(self, field, None)
+
 
 @base.IronicObjectRegistry.register
 class BIOSSettingList(base.IronicObjectListBase, base.IronicObject):
diff --git a/ironic/tests/unit/api/controllers/v1/test_node.py b/ironic/tests/unit/api/controllers/v1/test_node.py
index baa21d5a9..4a94671a9 100644
--- a/ironic/tests/unit/api/controllers/v1/test_node.py
+++ b/ironic/tests/unit/api/controllers/v1/test_node.py
@@ -6685,7 +6685,7 @@ class TestBIOS(test_api_base.BaseApiTest):
 
     def setUp(self):
         super(TestBIOS, self).setUp()
-        self.version = "1.40"
+        self.version = "1.74"
         self.node = obj_utils.create_test_node(
             self.context, id=1)
         self.bios = obj_utils.create_test_bios_setting(self.context,
@@ -6718,13 +6718,40 @@ class TestBIOS(test_api_base.BaseApiTest):
 
         expected_json = {
             'virtualization': {
+                'allowable_values': ['on', 'off'],
+                'attribute_type': 'Enumeration',
                 'created_at': ret['virtualization']['created_at'],
-                'updated_at': ret['virtualization']['updated_at'],
                 'links': [
                     {'href': 'http://localhost/v1/nodes/%s/bios/virtualization'
                      % self.node.uuid, u'rel': u'self'},
                     {'href': 'http://localhost/nodes/%s/bios/virtualization'
                      % self.node.uuid, u'rel': u'bookmark'}],
+                'lower_bound': None,
+                'min_length': None,
+                'max_length': None,
+                'name': 'virtualization',
+                'read_only': False,
+                'reset_required': True,
+                'unique': False,
+                'updated_at': None,
+                'upper_bound': None,
+                'value': 'on'}}
+
+        self.assertEqual(expected_json, ret)
+
+    def test_get_one_bios_no_registry(self):
+        ret = self.get_json('/nodes/%s/bios/virtualization' % self.node.uuid,
+                            headers={api_base.Version.string: "1.73"})
+
+        expected_json = {
+            'virtualization': {
+                'created_at': ret['virtualization']['created_at'],
+                'updated_at': ret['virtualization']['updated_at'],
+                'links': [
+                    {'href': 'http://localhost/v1/nodes/%s/bios/virtualization'
+                     % self.node.uuid, 'rel': 'self'},
+                    {'href': 'http://localhost/nodes/%s/bios/virtualization'
+                     % self.node.uuid, 'rel': 'bookmark'}],
                 'name': 'virtualization', 'value': 'on'}}
         self.assertEqual(expected_json, ret)
 
@@ -6742,6 +6769,88 @@ class TestBIOS(test_api_base.BaseApiTest):
         self.assertIn("fake_setting", ret.json['error_message'])
         self.assertNotIn(self.node.id, ret.json['error_message'])
 
+    def test_get_all_bios_with_detail(self):
+        ret = self.get_json('/nodes/%s/bios?detail=True' % self.node.uuid,
+                            headers={api_base.Version.string: self.version})
+
+        expected_json = [
+            {'allowable_values': ['on', 'off'],
+             'attribute_type': 'Enumeration',
+             'created_at': ret['bios'][0]['created_at'],
+             'links': [
+                 {'href': 'http://localhost/v1/nodes/%s/bios/virtualization'
+                  % self.node.uuid, 'rel': 'self'},
+                 {'href': 'http://localhost/nodes/%s/bios/virtualization'
+                  % self.node.uuid, 'rel': 'bookmark'}],
+             'lower_bound': None,
+             'max_length': None,
+             'min_length': None,
+             'name': 'virtualization',
+             'read_only': False,
+             'reset_required': True,
+             'unique': False,
+             'updated_at': None,
+             'upper_bound': None,
+             'value': 'on'}]
+
+        self.assertEqual({'bios': expected_json}, ret)
+
+    def test_get_all_bios_detail_false(self):
+        ret = self.get_json('/nodes/%s/bios?detail=False' % self.node.uuid,
+                            headers={api_base.Version.string: self.version})
+
+        expected_json = [
+            {'created_at': ret['bios'][0]['created_at'],
+             'updated_at': ret['bios'][0]['updated_at'],
+             'links': [
+                {'href': 'http://localhost/v1/nodes/%s/bios/virtualization'
+                 % self.node.uuid, 'rel': 'self'},
+                {'href': 'http://localhost/nodes/%s/bios/virtualization'
+                 % self.node.uuid, 'rel': 'bookmark'}],
+                'name': 'virtualization', 'value': 'on'}]
+        self.assertEqual({'bios': expected_json}, ret)
+
+    def test_get_all_bios_detail_old_version(self):
+        ret = self.get_json('/nodes/%s/bios?detail=True' % self.node.uuid,
+                            headers={api_base.Version.string: "1.73"},
+                            expect_errors=True)
+
+        self.assertEqual(http_client.BAD_REQUEST, ret.status_int)
+
+    def test_get_bios_fields_old_version(self):
+        ret = self.get_json('/nodes/%s/bios?fields=name,read_only'
+                            % self.node.uuid,
+                            headers={api_base.Version.string: "1.73"},
+                            expect_errors=True)
+
+        self.assertEqual(http_client.BAD_REQUEST, ret.status_int)
+
+    def test_get_bios_detail_and_fields(self):
+        ret = self.get_json('/nodes/%s/bios?detail=True?fields=name,read_only'
+                            % self.node.uuid,
+                            headers={api_base.Version.string: "1.74"},
+                            expect_errors=True)
+
+        self.assertEqual(http_client.BAD_REQUEST, ret.status_int)
+
+    def test_get_bios_fields(self):
+        ret = self.get_json('/nodes/%s/bios?fields=name,read_only'
+                            % self.node.uuid,
+                            headers={api_base.Version.string: self.version})
+
+        expected_json = [
+            {'created_at': ret['bios'][0]['created_at'],
+             'links': [
+                 {'href': 'http://localhost/v1/nodes/%s/bios/virtualization'
+                  % self.node.uuid, 'rel': 'self'},
+                 {'href': 'http://localhost/nodes/%s/bios/virtualization'
+                  % self.node.uuid, 'rel': 'bookmark'}],
+             'name': 'virtualization',
+             'read_only': False,
+             'updated_at': None}]
+
+        self.assertEqual({'bios': expected_json}, ret)
+
 
 class TestTraits(test_api_base.BaseApiTest):
 
diff --git a/ironic/tests/unit/common/test_release_mappings.py b/ironic/tests/unit/common/test_release_mappings.py
index b5adfa060..db2d37c60 100644
--- a/ironic/tests/unit/common/test_release_mappings.py
+++ b/ironic/tests/unit/common/test_release_mappings.py
@@ -85,7 +85,7 @@ class ReleaseMappingsTestCase(base.TestCase):
         self.assertIn('master', release_mappings.RELEASE_MAPPING)
         model_names = set((s.__name__ for s in models.Base.__subclasses__()))
         exceptions = set(['NodeTag', 'ConductorHardwareInterfaces',
-                          'NodeTrait', 'BIOSSetting', 'DeployTemplateStep'])
+                          'NodeTrait', 'DeployTemplateStep'])
         # NOTE(xek): As a rule, all models which can be changed between
         # releases or are sent through RPC should have their counterpart
         # versioned objects.
diff --git a/ironic/tests/unit/db/sqlalchemy/test_migrations.py b/ironic/tests/unit/db/sqlalchemy/test_migrations.py
index 7a2641323..3b81e3b92 100644
--- a/ironic/tests/unit/db/sqlalchemy/test_migrations.py
+++ b/ironic/tests/unit/db/sqlalchemy/test_migrations.py
@@ -705,6 +705,40 @@ class MigrationCheckersMixin(object):
                 bios_settings.c.name == setting['name'])).execute().first()
         self.assertEqual('on', setting['value'])
 
+    def _check_2bbd96b6ccb9(self, engine, data):
+        bios_settings = db_utils.get_table(engine, 'bios_settings')
+        col_names = [column.name for column in bios_settings.c]
+        self.assertIn('attribute_type', col_names)
+        self.assertIn('allowable_values', col_names)
+        self.assertIn('lower_bound', col_names)
+        self.assertIn('max_length', col_names)
+        self.assertIn('min_length', col_names)
+        self.assertIn('read_only', col_names)
+        self.assertIn('reset_required', col_names)
+        self.assertIn('unique', col_names)
+        self.assertIn('upper_bound', col_names)
+        self.assertIsInstance(bios_settings.c.attribute_type.type,
+                              sqlalchemy.types.String)
+        self.assertIsInstance(bios_settings.c.allowable_values.type,
+                              sqlalchemy.types.TEXT)
+        self.assertIsInstance(bios_settings.c.lower_bound.type,
+                              sqlalchemy.types.Integer)
+        self.assertIsInstance(bios_settings.c.max_length.type,
+                              sqlalchemy.types.Integer)
+        self.assertIsInstance(bios_settings.c.min_length.type,
+                              sqlalchemy.types.Integer)
+        self.assertIsInstance(bios_settings.c.read_only.type,
+                              (sqlalchemy.types.Boolean,
+                               sqlalchemy.types.Integer))
+        self.assertIsInstance(bios_settings.c.reset_required.type,
+                              (sqlalchemy.types.Boolean,
+                               sqlalchemy.types.Integer))
+        self.assertIsInstance(bios_settings.c.unique.type,
+                              (sqlalchemy.types.Boolean,
+                               sqlalchemy.types.Integer))
+        self.assertIsInstance(bios_settings.c.upper_bound.type,
+                              sqlalchemy.types.Integer)
+
     def _check_2d13bc3d6bba(self, engine, data):
         nodes = db_utils.get_table(engine, 'nodes')
         col_names = [column.name for column in nodes.c]
diff --git a/ironic/tests/unit/db/test_bios_settings.py b/ironic/tests/unit/db/test_bios_settings.py
index a13f516a3..9cb077e07 100644
--- a/ironic/tests/unit/db/test_bios_settings.py
+++ b/ironic/tests/unit/db/test_bios_settings.py
@@ -29,7 +29,7 @@ class DbBIOSSettingTestCase(base.DbTestCase):
         self.assertEqual(result['node_id'], self.node.id)
         self.assertEqual(result['name'], 'virtualization')
         self.assertEqual(result['value'], 'on')
-        self.assertEqual(result['version'], '1.0')
+        self.assertEqual(result['version'], '1.1')
 
     def test_get_bios_setting_node_not_exist(self):
         self.assertRaises(exception.NodeNotFound,
@@ -50,7 +50,7 @@ class DbBIOSSettingTestCase(base.DbTestCase):
         self.assertEqual(result[0]['node_id'], self.node.id)
         self.assertEqual(result[0]['name'], 'virtualization')
         self.assertEqual(result[0]['value'], 'on')
-        self.assertEqual(result[0]['version'], '1.0')
+        self.assertEqual(result[0]['version'], '1.1')
         self.assertEqual(len(result), 1)
 
     def test_get_bios_setting_list_node_not_exist(self):
@@ -61,7 +61,7 @@ class DbBIOSSettingTestCase(base.DbTestCase):
     def test_create_bios_setting_list(self):
         settings = db_utils.get_test_bios_setting_setting_list()
         result = self.dbapi.create_bios_setting_list(
-            self.node.id, settings, '1.0')
+            self.node.id, settings, '1.1')
         self.assertCountEqual(['virtualization', 'hyperthread', 'numlock'],
                               [setting.name for setting in result])
         self.assertCountEqual(['on', 'enabled', 'off'],
@@ -69,7 +69,7 @@ class DbBIOSSettingTestCase(base.DbTestCase):
 
     def test_create_bios_setting_list_duplicate(self):
         settings = db_utils.get_test_bios_setting_setting_list()
-        self.dbapi.create_bios_setting_list(self.node.id, settings, '1.0')
+        self.dbapi.create_bios_setting_list(self.node.id, settings, '1.1')
         self.assertRaises(exception.BIOSSettingAlreadyExists,
                           self.dbapi.create_bios_setting_list,
                           self.node.id, settings, '1.0')
@@ -81,18 +81,18 @@ class DbBIOSSettingTestCase(base.DbTestCase):
 
     def test_update_bios_setting_list(self):
         settings = db_utils.get_test_bios_setting_setting_list()
-        self.dbapi.create_bios_setting_list(self.node.id, settings, '1.0')
+        self.dbapi.create_bios_setting_list(self.node.id, settings, '1.1')
         settings = [{'name': 'virtualization', 'value': 'off'},
                     {'name': 'hyperthread', 'value': 'disabled'},
                     {'name': 'numlock', 'value': 'on'}]
         result = self.dbapi.update_bios_setting_list(
-            self.node.id, settings, '1.0')
+            self.node.id, settings, '1.1')
         self.assertCountEqual(['off', 'disabled', 'on'],
                               [setting.value for setting in result])
 
     def test_update_bios_setting_list_setting_not_exist(self):
         settings = db_utils.get_test_bios_setting_setting_list()
-        self.dbapi.create_bios_setting_list(self.node.id, settings, '1.0')
+        self.dbapi.create_bios_setting_list(self.node.id, settings, '1.1')
         for setting in settings:
             setting['name'] = 'bios_name'
         self.assertRaises(exception.BIOSSettingNotFound,
@@ -106,7 +106,7 @@ class DbBIOSSettingTestCase(base.DbTestCase):
 
     def test_delete_bios_setting_list(self):
         settings = db_utils.get_test_bios_setting_setting_list()
-        self.dbapi.create_bios_setting_list(self.node.id, settings, '1.0')
+        self.dbapi.create_bios_setting_list(self.node.id, settings, '1.1')
         name_list = [setting['name'] for setting in settings]
         self.dbapi.delete_bios_setting_list(self.node.id, name_list)
         self.assertRaises(exception.BIOSSettingNotFound,
@@ -126,7 +126,7 @@ class DbBIOSSettingTestCase(base.DbTestCase):
 
     def test_delete_bios_setting_list_setting_not_exist(self):
         settings = db_utils.get_test_bios_setting_setting_list()
-        self.dbapi.create_bios_setting_list(self.node.id, settings, '1.0')
+        self.dbapi.create_bios_setting_list(self.node.id, settings, '1.1')
         self.assertRaises(exception.BIOSSettingListNotFound,
                           self.dbapi.delete_bios_setting_list,
                           self.node.id, ['fake-bios-option'])
diff --git a/ironic/tests/unit/db/utils.py b/ironic/tests/unit/db/utils.py
index bf025d6af..cb8e55338 100644
--- a/ironic/tests/unit/db/utils.py
+++ b/ironic/tests/unit/db/utils.py
@@ -566,7 +566,12 @@ def create_test_bios_setting(**kw):
     node_id = bios_setting['node_id']
     version = bios_setting['version']
     settings = [{'name': bios_setting['name'],
-                 'value': bios_setting['value']}]
+                 'value': bios_setting['value'],
+                 'attribute_type': bios_setting['attribute_type'],
+                 'allowable_values': bios_setting['allowable_values'],
+                 'read_only': bios_setting['read_only'],
+                 'reset_required': bios_setting['reset_required'],
+                 'unique': bios_setting['unique']}]
     return dbapi.create_bios_setting_list(node_id, settings, version)[0]
 
 
@@ -575,6 +580,15 @@ def get_test_bios_setting(**kw):
         'node_id': kw.get('node_id', '123'),
         'name': kw.get('name', 'virtualization'),
         'value': kw.get('value', 'on'),
+        'attribute_type': kw.get('attribute_type', 'Enumeration'),
+        'allowable_values': kw.get('allowable_values', ['on', 'off']),
+        'lower_bound': kw.get('lower_bound', None),
+        'max_length': kw.get('max_length', None),
+        'min_length': kw.get('max_length', None),
+        'read_only': kw.get('read_only', False),
+        'reset_required': kw.get('reset_required', True),
+        'unique': kw.get('unique', False),
+        'upper_bound': kw.get('upper_bound', None),
         'version': kw.get('version', bios.BIOSSetting.VERSION),
         'created_at': kw.get('created_at'),
         'updated_at': kw.get('updated_at'),
diff --git a/ironic/tests/unit/objects/test_bios.py b/ironic/tests/unit/objects/test_bios.py
index 57538fbbf..5f4d8b999 100644
--- a/ironic/tests/unit/objects/test_bios.py
+++ b/ironic/tests/unit/objects/test_bios.py
@@ -42,6 +42,15 @@ class TestBIOSSettingObject(db_base.DbTestCase, obj_utils.SchemasTestMixIn):
         self.assertEqual(self.bios_setting['node_id'], bios_obj.node_id)
         self.assertEqual(self.bios_setting['name'], bios_obj.name)
         self.assertEqual(self.bios_setting['value'], bios_obj.value)
+        self.assertEqual(self.bios_setting['attribute_type'],
+                         bios_obj.attribute_type)
+        self.assertEqual(self.bios_setting['allowable_values'],
+                         bios_obj.allowable_values)
+        self.assertEqual(self.bios_setting['reset_required'],
+                         bios_obj.reset_required)
+        self.assertEqual(self.bios_setting['read_only'],
+                         bios_obj.read_only)
+        self.assertEqual(self.bios_setting['unique'], bios_obj.unique)
 
     @mock.patch.object(dbapi.IMPL, 'get_bios_setting_list', autospec=True)
     def test_get_by_node_id(self, mock_get_setting_list):
@@ -67,9 +76,22 @@ class TestBIOSSettingObject(db_base.DbTestCase, obj_utils.SchemasTestMixIn):
         fake_call_args = {'node_id': self.bios_setting['node_id'],
                           'name': self.bios_setting['name'],
                           'value': self.bios_setting['value'],
+                          'attribute_type':
+                          self.bios_setting['attribute_type'],
+                          'allowable_values':
+                          self.bios_setting['allowable_values'],
+                          'read_only': self.bios_setting['read_only'],
+                          'reset_required':
+                          self.bios_setting['reset_required'],
+                          'unique': self.bios_setting['unique'],
                           'version': self.bios_setting['version']}
-        setting = [{'name': self.bios_setting['name'],
-                    'value': self.bios_setting['value']}]
+        setting = [{'name': 'virtualization', 'value': 'on', 'attribute_type':
+                    'Enumeration', 'allowable_values': ['on', 'off'],
+                    'lower_bound': None, 'max_length': None,
+                    'min_length': None, 'read_only': False,
+                    'reset_required': True, 'unique': False,
+                    'upper_bound': None}]
+
         bios_obj = objects.BIOSSetting(context=self.context,
                                        **fake_call_args)
         mock_create_list.return_value = [self.bios_setting]
@@ -81,6 +103,15 @@ class TestBIOSSettingObject(db_base.DbTestCase, obj_utils.SchemasTestMixIn):
         self.assertEqual(self.bios_setting['node_id'], bios_obj.node_id)
         self.assertEqual(self.bios_setting['name'], bios_obj.name)
         self.assertEqual(self.bios_setting['value'], bios_obj.value)
+        self.assertEqual(self.bios_setting['attribute_type'],
+                         bios_obj.attribute_type)
+        self.assertEqual(self.bios_setting['allowable_values'],
+                         bios_obj.allowable_values)
+        self.assertEqual(self.bios_setting['read_only'],
+                         bios_obj.read_only)
+        self.assertEqual(self.bios_setting['reset_required'],
+                         bios_obj.reset_required)
+        self.assertEqual(self.bios_setting['unique'], bios_obj.unique)
 
     @mock.patch.object(dbapi.IMPL, 'update_bios_setting_list', autospec=True)
     def test_save(self, mock_update_list):
@@ -89,7 +120,12 @@ class TestBIOSSettingObject(db_base.DbTestCase, obj_utils.SchemasTestMixIn):
                           'value': self.bios_setting['value'],
                           'version': self.bios_setting['version']}
         setting = [{'name': self.bios_setting['name'],
-                    'value': self.bios_setting['value']}]
+                    'value': self.bios_setting['value'],
+                    'attribute_type': None, 'allowable_values': None,
+                    'lower_bound': None, 'max_length': None,
+                    'min_length': None, 'read_only': None,
+                    'reset_required': None, 'unique': None,
+                    'upper_bound': None}]
         bios_obj = objects.BIOSSetting(context=self.context,
                                        **fake_call_args)
         mock_update_list.return_value = [self.bios_setting]
@@ -111,7 +147,7 @@ class TestBIOSSettingObject(db_base.DbTestCase, obj_utils.SchemasTestMixIn):
         bios_obj_list = objects.BIOSSettingList.create(
             self.context, self.node_id, settings)
 
-        mock_create_list.assert_called_once_with(self.node_id, settings, '1.0')
+        mock_create_list.assert_called_once_with(self.node_id, settings, '1.1')
         self.assertEqual(self.context, bios_obj_list._context)
         self.assertEqual(2, len(bios_obj_list))
         self.assertEqual(self.bios_setting['node_id'],
@@ -120,7 +156,6 @@ class TestBIOSSettingObject(db_base.DbTestCase, obj_utils.SchemasTestMixIn):
         self.assertEqual(self.bios_setting['value'], bios_obj_list[0].value)
         self.assertEqual(bios_setting2['node_id'], bios_obj_list[1].node_id)
         self.assertEqual(bios_setting2['name'], bios_obj_list[1].name)
-        self.assertEqual(bios_setting2['value'], bios_obj_list[1].value)
 
     @mock.patch.object(dbapi.IMPL, 'update_bios_setting_list', autospec=True)
     def test_list_save(self, mock_update_list):
@@ -131,7 +166,7 @@ class TestBIOSSettingObject(db_base.DbTestCase, obj_utils.SchemasTestMixIn):
         bios_obj_list = objects.BIOSSettingList.save(
             self.context, self.node_id, settings)
 
-        mock_update_list.assert_called_once_with(self.node_id, settings, '1.0')
+        mock_update_list.assert_called_once_with(self.node_id, settings, '1.1')
         self.assertEqual(self.context, bios_obj_list._context)
         self.assertEqual(2, len(bios_obj_list))
         self.assertEqual(self.bios_setting['node_id'],
@@ -189,8 +224,7 @@ class TestBIOSSettingObject(db_base.DbTestCase, obj_utils.SchemasTestMixIn):
             objects.BIOSSettingList.sync_node_setting(self.ctxt, node.id,
                                                       settings))
 
-        expected_delete = [{'name': bios_obj_1.name,
-                            'value': bios_obj_1.value}]
+        expected_delete = [{'name': 'virtualization', 'value': 'on'}]
         self.assertEqual(create, settings[:2])
         self.assertEqual(update, [])
         self.assertEqual(delete, expected_delete)
diff --git a/ironic/tests/unit/objects/test_objects.py b/ironic/tests/unit/objects/test_objects.py
index 7b7788933..4e38e123d 100644
--- a/ironic/tests/unit/objects/test_objects.py
+++ b/ironic/tests/unit/objects/test_objects.py
@@ -711,7 +711,7 @@ expected_object_fingerprints = {
     'VolumeTargetCRUDPayload': '1.0-30dcc4735512c104a3a36a2ae1e2aeb2',
     'Trait': '1.0-3f26cb70c8a10a3807d64c219453e347',
     'TraitList': '1.0-33a2e1bb91ad4082f9f63429b77c1244',
-    'BIOSSetting': '1.0-fd4a791dc2139a7cc21cefbbaedfd9e7',
+    'BIOSSetting': '1.1-1137db88675a4e2d7f7bcc3a0d52345a',
     'BIOSSettingList': '1.0-33a2e1bb91ad4082f9f63429b77c1244',
     'Allocation': '1.1-38937f2854722f1057ec667b12878708',
     'AllocationCRUDNotification': '1.0-59acc533c11d306f149846f922739c15',
diff --git a/releasenotes/notes/bios-registry-support-e7fd62908e9c222d.yaml b/releasenotes/notes/bios-registry-support-e7fd62908e9c222d.yaml
new file mode 100644
index 000000000..adb49983e
--- /dev/null
+++ b/releasenotes/notes/bios-registry-support-e7fd62908e9c222d.yaml
@@ -0,0 +1,8 @@
+---
+features:
+  - |
+    Provide the registry fields in the BIOS setting API and in the BIOS setting
+    list when detail is requested. Also added fields selector to query API.
+    See `story
+    2008571 <https://storyboard.openstack.org/#!/story/2008571>`_.
+