diff --git a/RedfishPkg/Include/Protocol/RedfishDiscover.h b/RedfishPkg/Include/Protocol/RedfishDiscover.h
new file mode 100644
index 0000000000..4c91605c4e
--- /dev/null
+++ b/RedfishPkg/Include/Protocol/RedfishDiscover.h
@@ -0,0 +1,199 @@
+/** @file
+ This file defines the EFI Redfish Discover Protocol interface.
+
+ (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef EFI_REDFISH_DISCOVER_PROTOCOL_H_
+#define EFI_REDFISH_DISCOVER_PROTOCOL_H_
+
+#include <IndustryStandard/Http11.h>
+#include <Protocol/Http.h>
+#include <Protocol/RestEx.h>
+#include <Uefi.h>
+
+//
+// GUID definitions
+//
+#define EFI_REDFISH_DISCOVER_PROTOCOL_GUID \
+ { \
+ 0x5db12509, 0x4550, 0x4347, { 0x96, 0xb3, 0x73, 0xc0, 0xff, 0x6e, 0x86, 0x9f } \
+ }
+
+#define REDFISH_DISCOVER_TOKEN_SIGNATURE SIGNATURE_32 ('R', 'F', 'T', 'S')
+
+typedef UINT32 EFI_REDFISH_DISCOVER_FLAG;
+#define EFI_REDFISH_DISCOVER_HOST_INTERFACE 0x00000001 ///< Discover Redfish server reported in SMBIOS 42h.
+#define EFI_REDFISH_DISCOVER_SSDP 0x00000002 ///< Discover Redfish server using UPnP Http search method.
+#define EFI_REDFISH_DISCOVER_SSDP_UDP6 0x00000004 ///< Use UDP version 6.
+#define EFI_REDFISH_DISCOVER_KEEP_ALIVE 0x00000008 ///< Keep to send UPnP Search in the duration indicated in
+ ///< EFI_REDFISH_DISCOVER_DURATION_MASK.
+#define EFI_REDFISH_DISCOVER_RENEW 0x00000010 ///< Set this bit to indicate this function to notify the caller
+ ///< a list of all Redfish servers it found. Otherwise, this fucntion
+ ///< just notify the caller new found Redfish servers.
+ ///<
+#define EFI_REDFISH_DISCOVER_VALIDATION 0x80000000 ///< Validate Redfish service for host interface instance.
+#define EFI_REDFISH_DISCOVER_DURATION_MASK 0x0f000000 ///< 2 to the Power of Duration. The valid value of duration is between
+ ///< 3 to 15. The corresponding duration is 8 to 2^15 seconds.
+ ///< Duration is only valid when EFI_REDFISH_DISCOVER_KEEP_ALIVE
+ ///< is set to 1.
+#define EFI_REDFISH_DISCOVER_DURATION_BIT_POS 8
+
+typedef struct _EFI_REDFISH_DISCOVER_PROTOCOL EFI_REDFISH_DISCOVER_PROTOCOL;
+typedef struct _EFI_REDFISH_DISCOVERED_INFORMATION EFI_REDFISH_DISCOVERED_INFORMATION;
+
+typedef struct _EFI_REDFISH_DISCOVERED_INFORMATION {
+ EFI_HANDLE RedfishRestExHandle; ///< REST EX EFI handle associated with this Redfish service.
+ BOOLEAN IsUdp6; ///< Indicates it's IP versino 6.
+ EFI_IP_ADDRESS RedfishHostIpAddress; ///< IP address of Redfish service.
+ UINTN RedfishVersion; ///< Redfish service version.
+ CHAR16 *Location; ///< Redfish service location.
+ CHAR16 *Uuid; ///< Redfish service UUID.
+ CHAR16 *Os; ///< Redfish service OS.
+ CHAR16 *OSVersion; ///< Redfish service OS version.
+ CHAR16 *Product; ///< Redfish service product name.
+ CHAR16 *ProductVer; ///< Redfish service product version.
+ BOOLEAN UseHttps; ///< Using HTTPS.
+};
+
+typedef struct {
+ EFI_STATUS Status; ///< Status of Redfish service discovery.
+ EFI_REDFISH_DISCOVERED_INFORMATION Information; ///< Redfish service discovered.
+} EFI_REDFISH_DISCOVERED_INSTANCE;
+
+typedef struct {
+ UINTN NumberOfServiceFound; ///< Must be 0 when pass to Acquire ().
+ EFI_REDFISH_DISCOVERED_INSTANCE *RedfishInstances; ///< Must be NULL when pass to Acquire ().
+} EFI_REDFISH_DISCOVERED_LIST;
+
+typedef struct {
+ EFI_MAC_ADDRESS MacAddress; ///< MAC address of network interfase to discover Redfish service.
+ BOOLEAN IsIpv6; ///< Indicates it's IP versino 6.
+ EFI_IP_ADDRESS SubnetId; ///< Subnet ID.
+ UINT8 SubnetPrefixLength; ///< Subnet prefix-length for IPv4 and IPv6.
+ UINT16 VlanId; ///< VLAN ID.
+} EFI_REDFISH_DISCOVER_NETWORK_INSTANCE;
+
+typedef struct {
+ UINT32 Signature; ///< Token signature.
+ EFI_REDFISH_DISCOVERED_LIST DiscoverList; ///< The memory of EFI_REDFISH_DISCOVERED_LIST is
+ ///< allocated by Acquire() and freed when caller invoke Release().
+ EFI_EVENT Event; ///< The TPL_CALLBACK event to be notified when Redfish services
+ ///< are discovered or any errors occurred during discovery.
+ UINTN Timeout; ///< The timeout value declared in EFI_REDFISH_DISCOVERED_TOKEN
+ ///< determines the seconds to drop discover process.
+ ///< Basically, the nearby Redfish services must response in >=1
+ ///< and <= 5 seconds. The valid timeout value used to have
+ ///< asynchronous discovery is >= 1 and <= 5 seconds. Set the
+ ///< timeout to zero means to discover Redfish service synchronously.
+ ///< Event in token is created by caller to listen the Reefish services
+ ///< found by Acquire().
+} EFI_REDFISH_DISCOVERED_TOKEN;
+
+/**
+ This function gets the NIC list which Redfish discover protocol
+ can discover Redfish service on it.
+
+ @param[in] This EFI_REDFISH_DISCOVER_PROTOCOL instance.
+ @param[in] ImageHandle EFI Image handle request the NIC list,
+ @param[out] NumberOfNetworkInterfaces Number of NICs can do Redfish service discovery.
+ @param[out] NetworkInterfaces NIC instances. It's an array of instance. The number of entries
+ in array is indicated by NumberOfNetworkInterfaces.
+ Caller has to release the memory
+ allocated by Redfish discover protocol.
+
+ @retval EFI_SUCCESS REST EX instances of discovered Redfish are released.
+ @retval Others Fail to remove the entry
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_REDFISH_DISCOVER_NETWORK_LIST)(
+ IN EFI_REDFISH_DISCOVER_PROTOCOL *This,
+ IN EFI_HANDLE ImageHandle,
+ OUT UINTN *NumberOfNetworkInterfaces,
+ OUT EFI_REDFISH_DISCOVER_NETWORK_INSTANCE **NetworkInterfaces
+);
+
+/**
+ This function acquires Redfish services by discovering static Redfish setting
+ according to Redfish Host Interface or through SSDP. Returns a list of EFI
+ handles in EFI_REDFISH_DISCOVERED_LIST. Each of EFI handle has cooresponding
+ EFI REST EX instance installed on it. Each REST EX isntance is a child instance which
+ created through EFI REST EX serivce protoocl for communicating with specific
+ Redfish service.
+
+ @param[in] This EFI_REDFISH_DISCOVER_PROTOCOL instance.
+ @param[in] ImageHandle EFI image owns these Redfish service instances.
+ @param[in] TargetNetworkInterface Target NIC to do the discovery.
+ NULL means discover Redfish service on all NICs on platform.
+ @param[in] Flags Redfish service discover flags.
+ @param[in] Token EFI_REDFISH_DISCOVERED_TOKEN instance.
+ The memory of EFI_REDFISH_DISCOVERED_LIST and the strings in
+ EFI_REDFISH_DISCOVERED_INFORMATION are all allocated by Acquire()
+ and must be freed when caller invoke Release().
+
+ @retval EFI_SUCCESS REST EX instance of discovered Redfish services are returned.
+ @retval EFI_INVALID_PARAMETERS ImageHandle == NULL, Flags == 0, Token == NULL, Token->Timeout > 5,
+ or Token->Event == NULL.
+ @retval Others Fail acquire Redfish services.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_REDFISH_DISCOVER_ACQUIRE_SERVICE)(
+ IN EFI_REDFISH_DISCOVER_PROTOCOL *This,
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_REDFISH_DISCOVER_NETWORK_INSTANCE *TargetNetworkInterface,
+ IN EFI_REDFISH_DISCOVER_FLAG Flags,
+ IN EFI_REDFISH_DISCOVERED_TOKEN *Token
+);
+
+/**
+ This function aborts Redfish service discovery on the given network interface.
+
+ @param[in] This EFI_REDFISH_DISCOVER_PROTOCOL instance.
+ @param[in] TargetNetworkInterface Target NIC to do the discovery.
+
+ @retval EFI_SUCCESS REST EX instance of discovered Redfish services are returned.
+ @retval Others Fail to abort Redfish service discovery.
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_REDFISH_DISCOVER_ABORT_ACQUIRE)(
+ IN EFI_REDFISH_DISCOVER_PROTOCOL *This,
+ IN EFI_REDFISH_DISCOVER_NETWORK_INSTANCE *TargetNetworkInterface OPTIONAL
+);
+
+/**
+ This function releases Redfish services found by RedfishServiceAcquire().
+
+ @param[in] This EFI_REDFISH_DISCOVER_PROTOCOL instance.
+ @param[in] InstanceList The Redfish service to release.
+
+ @retval EFI_SUCCESS REST EX instances of discovered Redfish are released.
+ @retval Others Fail to remove the entry
+
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_REDFISH_DISCOVER_RELEASE_SERVICE)(
+ IN EFI_REDFISH_DISCOVER_PROTOCOL *This,
+ IN EFI_REDFISH_DISCOVERED_LIST *InstanceList
+);
+
+typedef struct _EFI_REDFISH_DISCOVER_PROTOCOL {
+ EFI_REDFISH_DISCOVER_NETWORK_LIST GetNetworkInterfaceList;
+ EFI_REDFISH_DISCOVER_ACQUIRE_SERVICE AcquireRedfishService;
+ EFI_REDFISH_DISCOVER_ABORT_ACQUIRE AbortAcquireRedfishService;
+ EFI_REDFISH_DISCOVER_RELEASE_SERVICE ReleaseRedfishService;
+} EFI_REDFISH_DISCOVER_PROTOCOL;
+
+extern EFI_GUID gEfiRestExProtocolGuid;
+extern EFI_GUID gEfiRestExServiceBindingProtocolGuid;
+extern EFI_GUID gEfiRedfishDiscoverProtocolGuid;
+#endif
diff --git a/RedfishPkg/RedfishPkg.dec b/RedfishPkg/RedfishPkg.dec
index 65e21f6bd6..f12f83526c 100644
--- a/RedfishPkg/RedfishPkg.dec
+++ b/RedfishPkg/RedfishPkg.dec
@@ -21,6 +21,10 @@
# Platform implementation-specific Redfish Host Interface.
RedfishPlatformHostInterfaceLib|Include/Library/RedfishHostInterfaceLib.h
+[Protocols]
+ ## Include/Protocol/RedfishDiscover.h
+ gEfiRedfishDiscoverProtocolGuid = { 0x5db12509, 0x4550, 0x4347, { 0x96, 0xb3, 0x73, 0xc0, 0xff, 0x6e, 0x86, 0x9f }}
+
[Guids]
gEfiRedfishPkgTokenSpaceGuid = { 0x4fdbccb7, 0xe829, 0x4b4c, { 0x88, 0x87, 0xb2, 0x3f, 0xd7, 0x25, 0x4b, 0x85 }}