ArmPkg: Add FF-A partition information header

Partition descriptor is used to get partition information via
FFA_PARTITION_INFO_GET or FFA_PARTITION_INFO_GET_REGS FF-A ABI.

Adds defines for partition descriptor and some macros used to call above
ABIs.

Signed-off-by: Levi Yun <yeoreum.yun@arm.com>

ArmPkg/Include/IndustryStandard/ArmFfaPartInfo.h

@@ -0,0 +1,99 @@
+/** @file
+  Partition information description as specfied in the FF-A v1.2 specification.
+
+  Copyright (c) 2024, Arm Limited. All rights reserved.
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+  @par Glossary:
+    - FF-A  - Firmware Framework for Arm A-profile
+    - ST    - Start idx and Tag
+    - IM    - Information Metadata
+    - PART  - Partition
+    - PROP  - Property
+    - PE    - Processing Element
+    - INDEP - Independent
+    - AUX   - Auxiliary
+
+
+  @par Reference(s):
+    - FF-A Version 1.2 [https://developer.arm.com/documentation/den0077/latest]
+
+**/
+
+#ifndef ARM_FFA_PART_INFO_H_
+#define ARM_FFA_PART_INFO_H_
+
+/** Partition info flags used in FFA_PARTITION_INFO_GET
+ *  See FF-A spec chapter 13.8 FFA_PARTITION_INFO_GET
+ */
+#define FFA_PART_INFO_FLAG_TYPE_SHIFT  0
+#define FFA_PART_INFO_FLAG_TYPE_MASK   1
+#define FFA_PART_INFO_FLAG_TYPE_COUNT  1
+#define FFA_PART_INFO_FLAG_TYPE_DESC   0
+
+#define FFA_PART_INFO_IDX_MASK        0xffff
+#define FFA_PART_INFO_START_TAG_MASK  0xffff
+
+/** macro used in FFA_PARTITION_INFO_GET_REGS request
+ *  See FF-A spec chapter 13.9 FFA_PARTITION_INFO_GET_REGS
+ */
+#define FFA_PART_INFO_START_IDX_SHIFT  0
+#define FFA_PART_INFO_START_TAG_SHIFT  16
+
+/** macro used in FFA_PARTITION_INFO_GET_REGS response
+ *  See FF-A spec chapter 13.9 FFA_PARTITION_INFO_GET_REGS
+ */
+#define FFA_PART_INFO_METADATA_LAST_IDX_SHIFT     0
+#define FFA_PART_INFO_METADATA_CURRENT_IDX_SHIFT  16
+#define FFA_PART_INFO_METADATA_TAG_SHIFT          32
+
+/** Partition properties values in EFI_FFA_PART_INFO_DESC->PartitionProps
+ *  See FF-A spec chapter 6.2 partition discovery.
+ */
+#define FFA_PART_PROP_RECV_DIRECT_REQ    (1 << 0)
+#define FFA_PART_PROP_SEND_DIRECT_REQ    (1 << 1)
+#define FFA_PART_PROP_SEND_INDIRECT_REQ  (1 << 2)
+#define FFA_PART_PROP_RECV_INDIRECT_REQ  (1 << 3)
+
+#define FFA_PART_PROP_ID_TYPE_SHIFT             4
+#define FFA_PART_PROP_ID_TYPE_MASK              0x3
+#define FFA_PART_PROP_ID_PE_EP                  0x00
+#define FFA_PART_PROP_ID_STREAM_EP_INDEPENDENT  0x01
+#define FFA_PART_PROP_ID_STREAM_EP_DEPENDENT    0x02
+#define FFA_PART_PROP_ID_AUX                    0x03
+
+#define FFA_PART_PROP_VM_STATUS_CREATED    (1 << 6)
+#define FFA_PART_PROP_VM_STATUS_DESTROYED  (1 << 7)
+
+#define FFA_PART_PROP_EXECUTE_STATE  (1 << 8)
+
+#define FFA_PART_PROP_RECV_DIRECT_REQ2  (1 << 9)
+#define FFA_PART_PROP_SEND_DIRECT_REQ2  (1 << 10)
+
+typedef union {
+  /// Number of Execution context
+  UINT16    ExecContextCount;
+
+  ///  ID of proxy endpoint for a dependent peripheral device
+  UINT16    ProxyPartitionId;
+} EXEC_CONTEXT;
+
+/** Partition information Descriptor in the FF-A v1.2 spec.
+ *  See FF-A spec chapter 6.2 partition discovery.
+ */
+typedef struct {
+  /// Partition id
+  UINT16          PartitionId;
+
+  /// Execution context count or Proxy partition id
+  EXEC_CONTEXT    ExecContextCountOrProxyPartitionId;
+
+  /// Flags to determine partition properties
+  UINT32          PartitionProps;
+
+  /// UUID of partition
+  UINT32          PartitionUuid[4];
+} EFI_FFA_PART_INFO_DESC;
+
+#endif