diff --git a/include/lib/hob/mpinfo.h b/include/lib/hob/mpinfo.h
new file mode 100644
index 0000000..b80d8f1
--- /dev/null
+++ b/include/lib/hob/mpinfo.h
@@ -0,0 +1,120 @@
+/*
+ * Copyright (c) 2024, Arm Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+#ifndef MPINFO_H
+#define MPINFO_H
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <lib/utils_def.h>
+
+/*
+ * Value used in the NumberProcessors parameter of the GetProcessorInfo function
+ */
+#define CPU_V2_EXTENDED_TOPOLOGY  UL(1 << 24)
+
+/*
+ * This bit is used in the StatusFlag field of EFI_PROCESSOR_INFORMATION and
+ * indicates whether the processor is playing the role of BSP. If the bit is 1,
+ * then the processor is BSP. Otherwise, it is AP.
+ */
+#define PROCESSOR_AS_BSP_BIT  UL(1 << 0)
+
+/*
+ * This bit is used in the StatusFlag field of EFI_PROCESSOR_INFORMATION and
+ * indicates whether the processor is enabled. If the bit is 1, then the
+ * processor is enabled. Otherwise, it is disabled.
+ */
+#define PROCESSOR_ENABLED_BIT  UL(1 << 1)
+
+/*
+ * This bit is used in the StatusFlag field of EFI_PROCESSOR_INFORMATION and
+ * indicates whether the processor is healthy. If the bit is 1, then the
+ * processor is healthy. Otherwise, some fault has been detected for the processor.
+ */
+#define PROCESSOR_HEALTH_STATUS_BIT  UL(1 << 2)
+
+/*
+ * Structure that describes the physical location of a logical CPU.
+ */
+struct efi_cpu_physical_location {
+	uint32_t package;
+	uint32_t core;
+	uint32_t thread;
+};
+
+/*
+ * Structure that defines the 6-level physical location of the processor
+ */
+struct efi_cpu_physical_location2 {
+	uint32_t package;
+	uint32_t module;
+	uint32_t tile;
+	uint32_t die;
+	uint32_t core;
+	uint32_t thread;
+};
+
+union extended_processor_information {
+	/*
+	 * The 6-level physical location of the processor, including the
+	 * physical package number that identifies the cartridge, the physical
+	 * module number within package, the physical tile number within the module,
+	 * the physical die number within the tile, the physical core number within
+	 * package, and logical thread number within core.
+	 */
+	struct efi_cpu_physical_location2 location2;
+};
+
+/*
+ * Structure that describes information about a logical CPU.
+ */
+struct efi_processor_information {
+	/*
+	 * The unique processor ID determined by system hardware.
+	 */
+	uint64_t processor_id;
+
+	/*
+	 * Flags indicating if the processor is BSP or AP, if the processor is enabled
+	 * or disabled, and if the processor is healthy. Bits 3..31 are reserved and
+	 * must be 0.
+	 *
+	 * <pre>
+	 * BSP  ENABLED  HEALTH  Description
+	 * ===  =======  ======  ===================================================
+	 * 0      0       0     Unhealthy Disabled AP.
+	 * 0      0       1     Healthy Disabled AP.
+	 * 0      1       0     Unhealthy Enabled AP.
+	 * 0      1       1     Healthy Enabled AP.
+	 * 1      0       0     Invalid. The BSP can never be in the disabled state.
+	 * 1      0       1     Invalid. The BSP can never be in the disabled state.
+	 * 1      1       0     Unhealthy Enabled BSP.
+	 * 1      1       1     Healthy Enabled BSP.
+	 * </pre>
+	 */
+	uint32_t status_flags;
+
+	/*
+	 * The physical location of the processor, including the physical package number
+	 * that identifies the cartridge, the physical core number within package, and
+	 * logical thread number within core.
+	 */
+	struct efi_cpu_physical_location location;
+
+	/*
+	 * The extended information of the processor. This field is filled only when
+	 * CPU_V2_EXTENDED_TOPOLOGY is set in parameter ProcessorNumber.
+	 */
+	union extended_processor_information extended_information;
+};
+
+struct efi_mp_information_hob_data {
+	uint64_t number_of_processors;
+	uint64_t number_of_enabled_processors;
+	struct efi_processor_information processor_info[];
+};
+
+#endif /* MPINFO_H */