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From 7956c74860a39e75d80f0caadcfbd5570569717d Mon Sep 17 00:00:00 2001
From: Kuiying Wang <kuiying.wang@intel.com>
Date: Fri, 4 Sep 2020 19:24:25 +0800
Subject: [PATCH] Define Redfish interface "/Registries/Bios" and enable
 Attributes property

1. Define Redfish interface "/Registries/Bios" for BIOS Attribute Registry
   RBC Daemon provide method to get BIOS attribute registry.
2. Eanble Attributes property for BIOS resource
3. Define Redfish interface "/Systems/system/Bios/Settings" for BIOS
settings
4. RBC daemon is at
https://gerrit.openbmc-project.xyz/#/c/openbmc/bios-settings-mgr/+/35563/
5. IPMI command implementation is at
https://gerrit.openbmc-project.xyz/#/c/openbmc/intel-ipmi-oem/+/30827/
6. Property design is at
https://github.com/openbmc/phosphor-dbus-interfaces/tree/master/xyz/openbmc_project/BIOSConfig
7. Design doc is at
https://github.com/openbmc/docs/blob/master/designs/remote-bios-configuration.md
8. There will be 95 test cases for this feature in the validation team.

Tested:

1. Use postman (Redfish tool) could get all the attributes in bios
resouce, get bios settings, get bios attribute
registry.
https://IP_ADDR/redfish/v1/Systems/system/Bios
{
    "@Redfish.Settings": {
        "@odata.type": "#Settings.v1_3_0.Settings",
        "SettingsObject": {
            "@odata.id": "/redfish/v1/Systems/system/Bios/Settings"
        }
    },
    "@odata.id": "/redfish/v1/Systems/system/Bios",
    "@odata.type": "#Bios.v1_1_0.Bios",
    "Actions": {
        "#Bios.ChangePassword": {
            "target": "/redfish/v1/Systems/system/Bios/Actions/Bios.ChangePassword"
        },
        "#Bios.ResetBios": {
            "target": "/redfish/v1/Systems/system/Bios/Actions/Bios.ResetBios"
        }
    },
    "AttributeRegistry": "BiosAttributeRegistry",
    "Attributes": {
        "attr0": "current value"
    },
    "Description": "BIOS Configuration Service",
    "Id": "BIOS",
    "Links": {
        "ActiveSoftwareImage": {
            "@odata.id": "/redfish/v1/UpdateService/FirmwareInventory/bios_active"
        },
        "SoftwareImages": [
            {
                "@odata.id": "/redfish/v1/UpdateService/FirmwareInventory/bios_active"
            }
        ],
        "SoftwareImages@odata.count": 1
    },
    "Name": "BIOS Configuration"
}

Redfish interface: https://BMCIP/redfish/v1/Registries/BiosAttributeRegistry
{
    "@odata.id": "/redfish/v1/Registries/BiosAttributeRegistry",
    "@odata.type": "#MessageRegistryFile.v1_1_0.MessageRegistryFile",
    "Description": "BiosAttributeRegistry Message Registry File Location",
    "Id": "BiosAttributeRegistry",
    "Languages": [
        "en"
    ],
    "Languages@odata.count": 1,
    "Location": [
        {
            "Language": "en",
            "Uri": "/redfish/v1/Registries/BiosAttributeRegistry/BiosAttributeRegistry"
        }
    ],
    "Location@odata.count": 1,
    "Name": "BiosAttributeRegistry Message Registry File",
    "Registry": "BiosAttributeRegistry.1.0.0"
}

Redfish interface: https://BMCIP/redfish/v1/Registries/BiosAttributeRegistry/BiosAttributeRegistry
{
    "@odata.id": "/redfish/v1/Registries/BiosAttributeRegistry/BiosAttributeRegistry",
    "@odata.type": "#AttributeRegistry.v1_3_2.AttributeRegistry",
    "Id": "BiosAttributeRegistry",
    "Language": "en",
    "Name": "Bios Attribute Registry",
    "OwningEntity": "OpenBMC",
    "RegistryEntries": {
        "Attributes": [
            {
                "AttributeName": "attr0",
                "CurrentValue": "current value",
                "DefaultValue": "default value",
                "DisplayName": "display name for attr0",
                "HelpText": "description for attr0",
                "MenuPath": "./menu/path/for/attr0",
                "ReadOnly": false,
                "Type": "String",
                "Value": []
            }
        ]
    },
    "RegistryVersion": "1.0.0"
}

https://BMC_IPADDR/redfish/v1/Systems/system/Bios/Settings
{
    "@odata.id": "/redfish/v1/Systems/system/Bios/Settings",
    "@odata.type": "#Bios.v1_1_0.Bios",
    "AttributeRegistry": "BiosAttributeRegistry",
    "Attributes": {
        "QuietBoot": "0x0"
    },
    "Id": "BiosSettingsV1",
    "Name": "Bios Settings Version 1"
}

2. Passed Validator check for bios resource and bios attribute registry
*** /redfish/v1/Systems/system/Bios
INFO -   Type (#Bios.v1_1_0.Bios), GET SUCCESS (time: 1.57377)
INFO -   PASS
*** /redfish/v1/Registries/BiosAttributeRegistry
INFO -   Type (#MessageRegistryFile.v1_1_0.MessageRegistryFile), GET SUCCESS (time: 0.075438)
INFO -   PASS
INFO -
*** /redfish/v1/Registries/BiosAttributeRegistry/BiosAttributeRegistry
INFO -   Type (#AttributeRegistry.v1_3_2.AttributeRegistry), GET SUCCESS (time: 0.075751)
INFO -   PASS

@odata.id	/redfish/v1/Systems/system/Bios	odata	Exists	PASS
@odata.type	#Settings.v1_3_0.Settings	odata	Exists	PASS
Links	[JSON Object]	Bios.v1_1_0.Links	Yes	complex
Links.ActiveSoftwareImage	Link: /redfish/v1/UpdateService/FirmwareInventory/bios_active	link to: SoftwareInventory	Yes	PASS
Links.SoftwareImages	Array (size: 1)	array of: SoftwareInventory	Yes	...
Links.SoftwareImages[0]	Link: /redfish/v1/UpdateService/FirmwareInventory/bios_active	SoftwareInventory	Yes	PASS
Links.Oem	-	Resource.Oem	No	Optional
SoftwareImages@odata.count	1	odata	Exists	PASS
AttributeRegistry	BiosAttributeRegistry	string	Yes	PASS
Actions	[JSON Object]	Bios.v1_0_0.Actions	Yes	complex
Actions.#Bios.ResetBios	Action	-	Yes	PASS
Actions.#Bios.ChangePassword	Action	-	Yes	PASS
Attributes	[JSON Object]	Bios.v1_0_0.Attributes	Yes	complex
Attributes.attr0	current value	primitive	Yes	PASS
Id	BIOS	string	Yes	PASS
Description	BIOS Configuration Service	string	Yes	PASS
Name	BIOS Configuration	string	Yes	PASS
Oem	-	Resource.Oem	No	Optional
@Redfish.Settings	[JSON Object]	Settings.Settings	Yes	complex
@Redfish.Settings.MaintenanceWindowResource	-	link to: ItemOrCollection	No	Optional
@Redfish.Settings.SupportedApplyTimes	-	string (enum)	No	Optional
@Redfish.Settings.Time	-	date	No	Optional
@Redfish.Settings.ETag	-	string	No	Optional
@Redfish.Settings.SettingsObject	Link: /redfish/v1/Systems/system/Bios/Settings	link to: Item	Yes	PASS
@Redfish.Settings.Messages	-	Message	No	Optional

@odata.id	/redfish/v1/Registries/BiosAttributeRegistry	odata	Exists	PASS
@odata.type	#MessageRegistryFile.v1_1_0.MessageRegistryFile	odata	Exists	PASS
Languages@odata.count	1	odata	Exists	PASS
Location@odata.count	1	odata	Exists	PASS
Actions	-	MessageRegistryFile.v1_1_0.Actions	No	Optional
Languages	Array (size: 1)	string	Yes	...
Languages[0]	en	string	Yes	PASS
Registry	BiosAttributeRegistry.1.0.0	string	Yes	PASS
Location	Array (size: 1)	array of: Location	Yes	...
Location[0]	[JSON Object]	Location	Yes	complex
Location[0].Language	en	string	Yes	PASS
Location[0].Uri	/redfish/v1/Registries/BiosAttributeRegistry/BiosAttributeRegistry	string	Yes	PASS
Location[0].ArchiveUri	-	string	No	Optional
Location[0].PublicationUri	-	string	No	Optional
Location[0].ArchiveFile	-	string	No	Optional
Id	BiosAttributeRegistry	string	Yes	PASS
Description	BiosAttributeRegistry Message Registry File Location	string	Yes	PASS
Name	BiosAttributeRegistry Message Registry File	string	Yes	PASS
Oem	-	Resource.Oem	No	Optional

@odata.id	/redfish/v1/Registries/BiosAttributeRegistry/BiosAttributeRegistry	odata	Exists	PASS
@odata.type	#AttributeRegistry.v1_3_2.AttributeRegistry	odata	Exists	PASS
Actions	-	AttributeRegistry.v1_1_0.Actions	No	Optional
Language	en	string	Yes	PASS
RegistryVersion	1.0.0	string	Yes	PASS
OwningEntity	OpenBMC	string	Yes	PASS
SupportedSystems	-	SupportedSystems	No	Optional
RegistryEntries	[JSON Object]	AttributeRegistry.v1_0_0.RegistryEntries	Yes	complex
RegistryEntries.Attributes	Array (size: 1)	array of: Attributes	Yes	...
RegistryEntries.Attributes[0]	[JSON Object]	Attributes	Yes	complex
RegistryEntries.Attributes[0].Oem	-	Resource.Oem	No	Optional
RegistryEntries.Attributes[0].ResetRequired	-	boolean	No	Optional
RegistryEntries.Attributes[0].UefiDevicePath	-	string	No	Optional
RegistryEntries.Attributes[0].UefiKeywordName	-	string	No	Optional
RegistryEntries.Attributes[0].UefiNamespaceId	-	string	No	Optional
RegistryEntries.Attributes[0].AttributeName	attr0	string	Yes	PASS
RegistryEntries.Attributes[0].Type	String	string (enum)	Yes	PASS
RegistryEntries.Attributes[0].Value	Array (size: 0)	array of: AttributeValue	Yes	...
RegistryEntries.Attributes[0].DisplayName	display name for attr0	string	Yes	PASS
RegistryEntries.Attributes[0].HelpText	description for attr0	string	Yes	PASS
RegistryEntries.Attributes[0].WarningText	-	string	No	Optional
RegistryEntries.Attributes[0].CurrentValue	current value	primitive	Yes	PASS
RegistryEntries.Attributes[0].DefaultValue	default value	primitive	Yes	PASS
RegistryEntries.Attributes[0].DisplayOrder	-	number	No	Optional
RegistryEntries.Attributes[0].MenuPath	./menu/path/for/attr0	string	Yes	PASS
RegistryEntries.Attributes[0].ReadOnly	False	boolean	Yes	PASS
RegistryEntries.Attributes[0].WriteOnly	-	boolean	No	Optional
RegistryEntries.Attributes[0].GrayOut	-	boolean	No	Optional
RegistryEntries.Attributes[0].Hidden	-	boolean	No	Optional
RegistryEntries.Attributes[0].Immutable	-	boolean	No	Optional
RegistryEntries.Attributes[0].IsSystemUniqueProperty	-	boolean	No	Optional
RegistryEntries.Attributes[0].MaxLength	-	number	No	Optional
RegistryEntries.Attributes[0].MinLength	-	number	No	Optional
RegistryEntries.Attributes[0].ScalarIncrement	-	number	No	Optional
RegistryEntries.Attributes[0].UpperBound	-	number	No	Optional
RegistryEntries.Attributes[0].LowerBound	-	number	No	Optional
RegistryEntries.Attributes[0].ValueExpression	-	string	No	Optional
RegistryEntries.Menus	-	Menus	No	Optional
RegistryEntries.Dependencies	-	Dependencies	No	Optional
Id	BiosAttributeRegistry	string	Yes	PASS
Description	-	string	No	Optional
Name	Bios Attribute Registry	string	Yes	PASS
Oem	-	Resource.Oem	No	Optional

Change-Id: Iecc61018c350f0b8c89df59b2864b941508b1916
Signed-off-by: Kuiying Wang <kuiying.wang@intel.com>
Signed-off-by: Snehalatha Venkatesh <snehalathax.v@intel.com>
Signed-off-by: Smriti Ayushi <smriti.ayushi@intel.com>
---
 redfish-core/include/redfish.hpp              |   3 +
 .../include/registries/bios_registry.hpp      |  41 ++
 redfish-core/lib/bios.hpp                     | 511 ++++++++++++++++++
 redfish-core/lib/message_registries.hpp       |  11 +-
 4 files changed, 565 insertions(+), 1 deletion(-)
 create mode 100644 redfish-core/include/registries/bios_registry.hpp

diff --git a/redfish-core/include/redfish.hpp b/redfish-core/include/redfish.hpp
index 2479332..8bd4bf8 100644
--- a/redfish-core/include/redfish.hpp
+++ b/redfish-core/include/redfish.hpp
@@ -148,7 +148,10 @@ class RedfishService
         requestRoutesSystemActionsReset(app);
         requestRoutesSystemResetActionInfo(app);
         requestRoutesBiosService(app);
+        requestRoutesBiosSettings(app);
+        requestRoutesBiosAttributeRegistry(app);
         requestRoutesBiosReset(app);
+        requestRoutesBiosChangePassword(app);
 
 #ifdef BMCWEB_ENABLE_VM_NBDPROXY
         requestNBDVirtualMediaRoutes(app);
diff --git a/redfish-core/include/registries/bios_registry.hpp b/redfish-core/include/registries/bios_registry.hpp
new file mode 100644
index 0000000..c80937a
--- /dev/null
+++ b/redfish-core/include/registries/bios_registry.hpp
@@ -0,0 +1,41 @@
+/*
+// Copyright (c) 2020 Intel Corporation
+//
+// 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.
+*/
+#pragma once
+#include <registries.hpp>
+
+namespace redfish::message_registries::bios
+{
+const Header header = {
+    "Copyright 2020 OpenBMC. All rights reserved.",
+    "#MessageRegistry.v1_4_0.MessageRegistry",
+    "BiosAttributeRegistry.1.0.0",
+    "Bios Attribute Registry",
+    "en",
+    "This registry defines the messages for bios attribute registry.",
+    "BiosAttributeRegistry",
+    "1.0.0",
+    "OpenBMC",
+};
+// BiosAttributeRegistry registry is not defined in DMTF, We should use
+// OEM defined registries for this purpose.
+// Below link is wrong - We need to define OEM registries and use
+// appropriate data here.
+constexpr const char* url =
+    "https://redfish.dmtf.org/registries/BiosAttributeRegistry.1.0.0.json";
+
+constexpr std::array<MessageEntry, 0> registry = {
+};
+} // namespace redfish::message_registries::bios
diff --git a/redfish-core/lib/bios.hpp b/redfish-core/lib/bios.hpp
index c2fb284..9d7157c 100644
--- a/redfish-core/lib/bios.hpp
+++ b/redfish-core/lib/bios.hpp
@@ -3,8 +3,140 @@
 #include <app.hpp>
 #include <registries/privilege_registry.hpp>
 #include <utils/fw_utils.hpp>
+
 namespace redfish
 {
+
+/*baseBIOSTable
+map{attributeName,struct{attributeType,readonlyStatus,displayname,
+              description,menuPath,current,default,
+              array{struct{optionstring,optionvalue}}}}
+*/
+using BiosBaseTableType = std::vector<std::pair<
+    std::string,
+    std::tuple<
+        std::string, bool, std::string, std::string, std::string,
+        std::variant<int64_t, std::string>, std::variant<int64_t, std::string>,
+        std::vector<
+            std::tuple<std::string, std::variant<int64_t, std::string>>>>>>;
+using BiosBaseTableItemType = std::pair<
+    std::string,
+    std::tuple<
+        std::string, bool, std::string, std::string, std::string,
+        std::variant<int64_t, std::string>, std::variant<int64_t, std::string>,
+        std::vector<
+            std::tuple<std::string, std::variant<int64_t, std::string>>>>>;
+using OptionsItemType =
+    std::tuple<std::string, std::variant<int64_t, std::string>>;
+
+enum BiosBaseTableIndex
+{
+    biosBaseAttrType = 0,
+    biosBaseReadonlyStatus,
+    biosBaseDisplayName,
+    biosBaseDescription,
+    biosBaseMenuPath,
+    biosBaseCurrValue,
+    biosBaseDefaultValue,
+    biosBaseOptions
+};
+enum OptionsItemIndex
+{
+    optItemType = 0,
+    optItemValue
+};
+/*
+ The Pending attribute name and new value.
+              ex- { {"QuietBoot",Type.Integer, 0x1},
+                    { "DdrFreqLimit",Type.String,"2933"}
+                  }
+*/
+using PendingAttributesType = std::vector<std::pair<
+    std::string, std::tuple<std::string, std::variant<int64_t, std::string>>>>;
+using PendingAttributesItemType =
+    std::pair<std::string,
+              std::tuple<std::string, std::variant<int64_t, std::string>>>;
+enum PendingAttributesIndex
+{
+    pendingAttrType = 0,
+    pendingAttrValue
+};
+static std::string mapAttrTypeToRedfish(const std::string_view typeDbus)
+{
+    std::string ret;
+    if (typeDbus == "xyz.openbmc_project.BIOSConfig.Manager."
+                    "AttributeType.Enumeration")
+    {
+        ret = "Enumeration";
+    }
+    else if (typeDbus == "xyz.openbmc_project.BIOSConfig."
+                         "Manager.AttributeType.String")
+    {
+        ret = "String";
+    }
+    else if (typeDbus == "xyz.openbmc_project.BIOSConfig."
+                         "Manager.AttributeType.Password")
+    {
+        ret = "Password";
+    }
+    else if (typeDbus == "xyz.openbmc_project.BIOSConfig."
+                         "Manager.AttributeType.Integer")
+    {
+        ret = "Integer";
+    }
+    else if (typeDbus == "xyz.openbmc_project.BIOSConfig."
+                         "Manager.AttributeType.Boolean")
+    {
+        ret = "Boolean";
+    }
+    else
+    {
+        ret = "UNKNOWN";
+    }
+
+    return ret;
+}
+static std::string mapBoundTypeToRedfish(const std::string_view typeDbus)
+{
+    std::string ret;
+    if (typeDbus ==
+        "xyz.openbmc_project.BIOSConfig.Manager.BoundType.ScalarIncrement")
+    {
+        ret = "ScalarIncrement";
+    }
+    else if (typeDbus ==
+             "xyz.openbmc_project.BIOSConfig.Manager.BoundType.LowerBound")
+    {
+        ret = "LowerBound";
+    }
+    else if (typeDbus ==
+             "xyz.openbmc_project.BIOSConfig.Manager.BoundType.UpperBound")
+    {
+        ret = "UpperBound";
+    }
+    else if (typeDbus ==
+             "xyz.openbmc_project.BIOSConfig.Manager.BoundType.MinStringLength")
+    {
+        ret = "MinStringLength";
+    }
+    else if (typeDbus ==
+             "xyz.openbmc_project.BIOSConfig.Manager.BoundType.MaxStringLength")
+    {
+        ret = "MaxStringLength";
+    }
+    else if (typeDbus ==
+             "xyz.openbmc_project.BIOSConfig.Manager.BoundType.OneOf")
+    {
+        ret = "OneOf";
+    }
+    else
+    {
+        ret = "UNKNOWN";
+    }
+
+    return ret;
+}
+
 /**
  * BiosService class supports handle get method for bios.
  */
@@ -23,6 +155,85 @@ inline void
     // Get the ActiveSoftwareImage and SoftwareImages
     fw_util::populateFirmwareInformation(asyncResp, fw_util::biosPurpose, "",
                                          true);
+
+    asyncResp->res.jsonValue["@Redfish.Settings"] = {
+        {"@odata.type", "#Settings.v1_3_0.Settings"},
+        {"SettingsObject",
+         {{"@odata.id", "/redfish/v1/Systems/system/Bios/Settings"}}}};
+    asyncResp->res.jsonValue["AttributeRegistry"] = "BiosAttributeRegistry";
+    asyncResp->res.jsonValue["Attributes"] = nlohmann::json::object();
+
+    crow::connections::systemBus->async_method_call(
+        [asyncResp](const boost::system::error_code ec,
+                    const GetObjectType& getObjectType) {
+            if (ec)
+            {
+                BMCWEB_LOG_ERROR << "ObjectMapper::GetObject call failed: "
+                                 << ec;
+                messages::internalError(asyncResp->res);
+
+                return;
+            }
+            const std::string& service = getObjectType.begin()->first;
+
+            crow::connections::systemBus->async_method_call(
+                [asyncResp](
+                    const boost::system::error_code ec,
+                    const std::variant<BiosBaseTableType>& retBiosTable) {
+                    if (ec)
+                    {
+                        BMCWEB_LOG_ERROR << "getBiosAttributes DBUS error: "
+                                         << ec;
+                        messages::internalError(asyncResp->res);
+                        return;
+                    }
+                    const BiosBaseTableType* baseBiosTable =
+                        std::get_if<BiosBaseTableType>(&retBiosTable);
+                    nlohmann::json& attributesJson =
+                        asyncResp->res.jsonValue["Attributes"];
+                    if (baseBiosTable == nullptr)
+                    {
+                        BMCWEB_LOG_ERROR << "baseBiosTable == nullptr ";
+                        messages::internalError(asyncResp->res);
+                        return;
+                    }
+                    for (const BiosBaseTableItemType& item : *baseBiosTable)
+                    {
+                        const std::string& key = item.first;
+                        const std::string& itemType =
+                            std::get<biosBaseAttrType>(item.second);
+                        std::string attrType = mapAttrTypeToRedfish(itemType);
+                        if (attrType == "String")
+                        {
+                            const std::string* currValue =
+                                std::get_if<std::string>(
+                                    &std::get<biosBaseCurrValue>(item.second));
+                            attributesJson.emplace(
+                                key, currValue != nullptr ? *currValue : "");
+                        }
+                        else if (attrType == "Integer")
+                        {
+                            const int64_t* currValue = std::get_if<int64_t>(
+                                &std::get<biosBaseCurrValue>(item.second));
+                            attributesJson.emplace(
+                                key, currValue != nullptr ? *currValue : 0);
+                        }
+                        else
+                        {
+                            BMCWEB_LOG_ERROR << "Unsupported attribute type.";
+                            messages::internalError(asyncResp->res);
+                        }
+                    }
+                },
+                service, "/xyz/openbmc_project/bios_config/manager",
+                "org.freedesktop.DBus.Properties", "Get",
+                "xyz.openbmc_project.BIOSConfig.Manager", "BaseBIOSTable");
+        },
+        "xyz.openbmc_project.ObjectMapper",
+        "/xyz/openbmc_project/object_mapper",
+        "xyz.openbmc_project.ObjectMapper", "GetObject",
+        "/xyz/openbmc_project/bios_config/manager",
+        std::array<const char*, 0>());
 }
 inline void requestRoutesBiosService(App& app)
 {
@@ -31,6 +242,306 @@ inline void requestRoutesBiosService(App& app)
         .methods(boost::beast::http::verb::get)(handleBiosServiceGet);
 }
 
+/**
+ * BiosSettings class supports handle GET/PATCH method for
+ * BIOS configuration pending settings.
+ */
+inline void requestRoutesBiosSettings(App& app)
+{
+    BMCWEB_ROUTE(app, "/redfish/v1/Systems/system/Bios/Settings")
+        .privileges(redfish::privileges::getBios)
+        .methods(boost::beast::http::verb::get)(
+            [](const crow::Request&,
+               const std::shared_ptr<bmcweb::AsyncResp>& asyncResp) {
+                asyncResp->res.jsonValue["@odata.id"] =
+                    asyncResp->res.jsonValue["@odata.id"] =
+                        "/redfish/v1/Systems/system/Bios/Settings";
+                asyncResp->res.jsonValue["@odata.type"] = "#Bios.v1_1_0.Bios";
+                asyncResp->res.jsonValue["Name"] = "Bios Settings Version 1";
+                asyncResp->res.jsonValue["Id"] = "BiosSettingsV1";
+                asyncResp->res.jsonValue["AttributeRegistry"] =
+                    "BiosAttributeRegistry";
+                asyncResp->res.jsonValue["Attributes"] = {};
+
+                crow::connections::systemBus->async_method_call(
+                    [asyncResp](const boost::system::error_code ec,
+                                const GetObjectType& getObjectType) {
+                        if (ec)
+                        {
+                            BMCWEB_LOG_ERROR
+                                << "ObjectMapper::GetObject call failed: "
+                                << ec;
+                            messages::internalError(asyncResp->res);
+
+                            return;
+                        }
+                        std::string service = getObjectType.begin()->first;
+
+                        crow::connections::systemBus->async_method_call(
+                            [asyncResp](
+                                const boost::system::error_code ec,
+                                const std::variant<PendingAttributesType>&
+                                    retPendingAttributes) {
+                                if (ec)
+                                {
+                                    BMCWEB_LOG_ERROR
+                                        << "getBiosSettings DBUS error: " << ec;
+                                    messages::resourceNotFound(
+                                        asyncResp->res, "Systems/system/Bios",
+                                        "Settings");
+                                    return;
+                                }
+                                const PendingAttributesType* pendingAttributes =
+                                    std::get_if<PendingAttributesType>(
+                                        &retPendingAttributes);
+                                nlohmann::json& attributesJson =
+                                    asyncResp->res.jsonValue["Attributes"];
+                                if (pendingAttributes == nullptr)
+                                {
+                                    BMCWEB_LOG_ERROR
+                                        << "pendingAttributes == nullptr ";
+                                    messages::internalError(asyncResp->res);
+                                    return;
+                                }
+                                for (const PendingAttributesItemType& item :
+                                     *pendingAttributes)
+                                {
+                                    const std::string& key = item.first;
+                                    const std::string& itemType =
+                                        std::get<pendingAttrType>(item.second);
+                                    std::string attrType =
+                                        mapAttrTypeToRedfish(itemType);
+                                    if (attrType == "String")
+                                    {
+                                        const std::string* currValue =
+                                            std::get_if<std::string>(
+                                                &std::get<pendingAttrValue>(
+                                                    item.second));
+                                        attributesJson.emplace(
+                                            key, currValue != nullptr
+                                                     ? *currValue
+                                                     : "");
+                                    }
+                                    else if (attrType == "Integer")
+                                    {
+                                        const int64_t* currValue =
+                                            std::get_if<int64_t>(
+                                                &std::get<pendingAttrValue>(
+                                                    item.second));
+                                        attributesJson.emplace(
+                                            key, currValue != nullptr
+                                                     ? *currValue
+                                                     : 0);
+                                    }
+                                    else
+                                    {
+                                        BMCWEB_LOG_ERROR
+                                            << "Unsupported attribute type.";
+                                        messages::internalError(asyncResp->res);
+                                    }
+                                }
+                            },
+                            service, "/xyz/openbmc_project/bios_config/manager",
+                            "org.freedesktop.DBus.Properties", "Get",
+                            "xyz.openbmc_project.BIOSConfig.Manager",
+                            "PendingAttributes");
+                    },
+                    "xyz.openbmc_project.ObjectMapper",
+                    "/xyz/openbmc_project/object_mapper",
+                    "xyz.openbmc_project.ObjectMapper", "GetObject",
+                    "/xyz/openbmc_project/bios_config/manager",
+                    std::array<const char*, 0>());
+            });
+}
+/**
+ * BiosAttributeRegistry class supports handle get method for BIOS attribute
+ * registry.
+ */
+inline void requestRoutesBiosAttributeRegistry(App& app)
+{
+    BMCWEB_ROUTE(
+        app,
+        "/redfish/v1/Registries/BiosAttributeRegistry/BiosAttributeRegistry/")
+        .privileges(redfish::privileges::getBios)
+        .methods(
+            boost::beast::http::verb::
+                get)([](const crow::Request&,
+                        const std::shared_ptr<bmcweb::AsyncResp>& asyncResp) {
+            asyncResp->res.jsonValue["@odata.id"] =
+                "/redfish/v1/Registries/BiosAttributeRegistry/"
+                "BiosAttributeRegistry";
+            asyncResp->res.jsonValue["@odata.type"] =
+                "#AttributeRegistry.v1_3_2.AttributeRegistry";
+            asyncResp->res.jsonValue["Name"] = "Bios Attribute Registry";
+            asyncResp->res.jsonValue["Id"] = "BiosAttributeRegistry";
+            asyncResp->res.jsonValue["RegistryVersion"] = "1.0.0";
+            asyncResp->res.jsonValue["Language"] = "en";
+            asyncResp->res.jsonValue["OwningEntity"] = "OpenBMC";
+            asyncResp->res.jsonValue["RegistryEntries"]["Attributes"] =
+                nlohmann::json::array();
+
+            crow::connections::systemBus->async_method_call(
+                [asyncResp](const boost::system::error_code ec,
+                            const GetObjectType& getObjectType) {
+                    if (ec)
+                    {
+                        BMCWEB_LOG_ERROR
+                            << "ObjectMapper::GetObject call failed: " << ec;
+                        messages::internalError(asyncResp->res);
+
+                        return;
+                    }
+                    std::string service = getObjectType.begin()->first;
+
+                    crow::connections::systemBus->async_method_call(
+                        [asyncResp](const boost::system::error_code ec,
+                                    const std::variant<BiosBaseTableType>&
+                                        retBiosTable) {
+                            if (ec)
+                            {
+                                BMCWEB_LOG_ERROR
+                                    << "getBiosAttributeRegistry DBUS error: "
+                                    << ec;
+                                messages::resourceNotFound(
+                                    asyncResp->res, "Registries/Bios", "Bios");
+                                return;
+                            }
+                            const BiosBaseTableType* baseBiosTable =
+                                std::get_if<BiosBaseTableType>(&retBiosTable);
+                            nlohmann::json& attributeArray =
+                                asyncResp->res
+                                    .jsonValue["RegistryEntries"]["Attributes"];
+                            nlohmann::json optionsArray =
+                                nlohmann::json::array();
+                            if (baseBiosTable == nullptr)
+                            {
+                                BMCWEB_LOG_ERROR << "baseBiosTable == nullptr ";
+                                messages::internalError(asyncResp->res);
+                                return;
+                            }
+                            for (const BiosBaseTableItemType& item :
+                                 *baseBiosTable)
+                            {
+                                const std::string& itemType =
+                                    std::get<biosBaseAttrType>(item.second);
+                                std::string attrType =
+                                    mapAttrTypeToRedfish(itemType);
+                                if (attrType == "UNKNOWN")
+                                {
+                                    BMCWEB_LOG_ERROR << "attrType == UNKNOWN";
+                                    messages::internalError(asyncResp->res);
+                                    return;
+                                }
+                                nlohmann::json attributeItem;
+                                attributeItem["AttributeName"] = item.first;
+                                attributeItem["Type"] = attrType;
+                                attributeItem["ReadOnly"] =
+                                    std::get<biosBaseReadonlyStatus>(
+                                        item.second);
+                                attributeItem["DisplayName"] =
+                                    std::get<biosBaseDisplayName>(item.second);
+                                attributeItem["HelpText"] =
+                                    std::get<biosBaseDescription>(item.second);
+                                attributeItem["MenuPath"] =
+                                    std::get<biosBaseMenuPath>(item.second);
+
+                                if (attrType == "String")
+                                {
+                                    const std::string* currValue =
+                                        std::get_if<std::string>(
+                                            &std::get<biosBaseCurrValue>(
+                                                item.second));
+                                    const std::string* defValue =
+                                        std::get_if<std::string>(
+                                            &std::get<biosBaseDefaultValue>(
+                                                item.second));
+                                    attributeItem["CurrentValue"] =
+                                        currValue != nullptr ? *currValue : "";
+                                    attributeItem["DefaultValue"] =
+                                        defValue != nullptr ? *defValue : "";
+                                }
+                                else if (attrType == "Integer")
+                                {
+                                    const int64_t* currValue =
+                                        std::get_if<int64_t>(
+                                            &std::get<biosBaseCurrValue>(
+                                                item.second));
+                                    const int64_t* defValue =
+                                        std::get_if<int64_t>(
+                                            &std::get<biosBaseDefaultValue>(
+                                                item.second));
+                                    attributeItem["CurrentValue"] =
+                                        currValue != nullptr ? *currValue : 0;
+                                    attributeItem["DefaultValue"] =
+                                        defValue != nullptr ? *defValue : 0;
+                                }
+                                else
+                                {
+                                    BMCWEB_LOG_ERROR
+                                        << "Unsupported attribute type.";
+                                    messages::internalError(asyncResp->res);
+                                    return;
+                                }
+
+                                const std::vector<OptionsItemType>&
+                                    optionsVector =
+                                        std::get<biosBaseOptions>(item.second);
+                                for (const OptionsItemType& optItem :
+                                     optionsVector)
+                                {
+                                    nlohmann::json optItemJson;
+                                    const std::string& strOptItemType =
+                                        std::get<optItemType>(optItem);
+                                    std::string optItemTypeRedfish =
+                                        mapBoundTypeToRedfish(strOptItemType);
+                                    if (optItemTypeRedfish == "UNKNOWN")
+                                    {
+                                        BMCWEB_LOG_ERROR
+                                            << "optItemTypeRedfish == UNKNOWN";
+                                        messages::internalError(asyncResp->res);
+                                        return;
+                                    }
+                                    if (optItemTypeRedfish == "OneOf")
+                                    {
+                                        const std::string* currValue =
+                                            std::get_if<std::string>(
+                                                &std::get<optItemValue>(
+                                                    optItem));
+                                        optItemJson[optItemTypeRedfish] =
+                                            currValue != nullptr ? *currValue
+                                                                 : "";
+                                    }
+                                    else
+                                    {
+                                        const int64_t* currValue =
+                                            std::get_if<int64_t>(
+                                                &std::get<optItemValue>(
+                                                    optItem));
+                                        optItemJson[optItemTypeRedfish] =
+                                            currValue != nullptr ? *currValue
+                                                                 : 0;
+                                    }
+
+                                    optionsArray.push_back(optItemJson);
+                                }
+
+                                attributeItem["Value"] = optionsArray;
+                                attributeArray.push_back(attributeItem);
+                            }
+                        },
+                        service, "/xyz/openbmc_project/bios_config/manager",
+                        "org.freedesktop.DBus.Properties", "Get",
+                        "xyz.openbmc_project.BIOSConfig.Manager",
+                        "BaseBIOSTable");
+                },
+                "xyz.openbmc_project.ObjectMapper",
+                "/xyz/openbmc_project/object_mapper",
+                "xyz.openbmc_project.ObjectMapper", "GetObject",
+                "/xyz/openbmc_project/bios_config/manager",
+                std::array<const char*, 0>());
+        });
+}
+
 /**
  * BiosReset class supports handle POST method for Reset bios.
  * The class retrieves and sends data directly to D-Bus.
diff --git a/redfish-core/lib/message_registries.hpp b/redfish-core/lib/message_registries.hpp
index ae02189..510b19a 100644
--- a/redfish-core/lib/message_registries.hpp
+++ b/redfish-core/lib/message_registries.hpp
@@ -17,6 +17,7 @@
 
 #include "registries.hpp"
 #include "registries/base_message_registry.hpp"
+#include "registries/bios_registry.hpp"
 #include "registries/openbmc_message_registry.hpp"
 #include "registries/resource_event_message_registry.hpp"
 #include "registries/task_event_message_registry.hpp"
@@ -125,7 +126,6 @@ inline void requestRoutesMessageRegistryFile(App& app)
 inline void handleMessageRegistryGet(
     const crow::Request&, const std::shared_ptr<bmcweb::AsyncResp>& asyncResp,
     const std::string& registry, const std::string& registryMatch)
-
 {
     const message_registries::Header* header;
     std::vector<const message_registries::MessageEntry*> registryEntries;
@@ -165,6 +165,15 @@ inline void handleMessageRegistryGet(
             registryEntries.emplace_back(&entry);
         }
     }
+    else if (registry == "BiosAttributeRegistry")
+    {
+        header = &message_registries::bios::header;
+        for (const message_registries::MessageEntry& entry :
+             message_registries::bios::registry)
+        {
+            registryEntries.emplace_back(&entry);
+        }
+    }
     else
     {
         messages::resourceNotFound(
-- 
2.17.1