MLECO-2948: Minor refactoring for platform modules.

Reducing dependency on cmsis-device sources as these will
be removed under MLECO-2944. Also, starting to refactor
to allow HAL to drop NPU and TA init routines - this will
happen in future CRs.

Added platform driver for native, and subsequent patches
will attempt to get rid of the HAL "profile" specific
sources and allow platform stub implementations at a level
below HAL. This will allow platforms drivers to only
override the range of functions that they actually want to
implement and will fall back on stubs for the rest. In this
CR only "utils" have been removed.

Change-Id: I09b4a28e20847a07a956c818c6f47c74aab89063
diff --git a/source/hal/platform/mps3/source/device_mps3.c b/source/hal/platform/mps3/source/device_mps3.c
index fa57c2e..de715fb 100644
--- a/source/hal/platform/mps3/source/device_mps3.c
+++ b/source/hal/platform/mps3/source/device_mps3.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021 Arm Limited. All rights reserved.
+ * Copyright (c) 2021-2022 Arm Limited. All rights reserved.
  * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -21,11 +21,9 @@
 
 #include <inttypes.h>
 
-extern uint32_t GetSystemCoreClock(void);
-
 uint32_t GetMPS3CoreClock(void)
 {
-    const uint32_t default_clock = GetSystemCoreClock();
+    const uint32_t default_clock = 32000000 /* 32 MHz clock */;
     static int warned_once = 0;
     if (0 != MPS3_SCC->CFG_ACLK) {
         if (default_clock != MPS3_SCC->CFG_ACLK) {
diff --git a/source/hal/platform/mps3/source/include/device_mps3.h b/source/hal/platform/mps3/source/include/device_mps3.h
new file mode 100644
index 0000000..445965d
--- /dev/null
+++ b/source/hal/platform/mps3/source/include/device_mps3.h
@@ -0,0 +1,112 @@
+/*
+ * Copyright (c) 2021-2022 Arm Limited. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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.
+ */
+#ifndef DEVICE_MPS3_H
+#define DEVICE_MPS3_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "smm_mps3.h"   /* Memory map for MPS3. */
+
+#include <stdio.h>
+
+#define PERIF_CLK               (25000000) /* Clock source for APB peripherals */
+
+typedef struct _CMSDK_UART_TypeDef_
+{
+    __IO uint32_t  DATA;        /* Offset: 0x000 (R/W) Data Register.    */
+    __IO uint32_t  STATE;       /* Offset: 0x004 (R/W) Status Register.  */
+    __IO uint32_t  CTRL;        /* Offset: 0x008 (R/W) Control Register. */
+
+    union {
+    __I  uint32_t  INTSTATUS;   /* Offset: 0x00C (R/ ) Interrupt Status Register. */
+    __O  uint32_t  INTCLEAR;    /* Offset: 0x00C ( /W) Interrupt Clear Register. */
+    };
+    __IO uint32_t  BAUDDIV;     /* Offset: 0x010 (R/W) Baudrate Divider Register. */
+
+} CMSDK_UART_TypeDef;
+
+#define CMSDK_UART0             ((CMSDK_UART_TypeDef *)CMSDK_UART0_BASE)
+
+/* CMSDK_UART DATA Register Definitions. */
+#define CMSDK_UART_DATA_Pos               0                                             /* CMSDK_UART_DATA_Pos: DATA Position. */
+#define CMSDK_UART_DATA_Msk              (0xFFul << CMSDK_UART_DATA_Pos)                /* CMSDK_UART DATA: DATA Mask. */
+
+/* CMSDK_UART STATE Register Definitions. */
+#define CMSDK_UART_STATE_RXOR_Pos         3                                             /* CMSDK_UART STATE: RXOR Position. */
+#define CMSDK_UART_STATE_RXOR_Msk         (0x1ul << CMSDK_UART_STATE_RXOR_Pos)          /* CMSDK_UART STATE: RXOR Mask. */
+
+#define CMSDK_UART_STATE_TXOR_Pos         2                                             /* CMSDK_UART STATE: TXOR Position. */
+#define CMSDK_UART_STATE_TXOR_Msk         (0x1ul << CMSDK_UART_STATE_TXOR_Pos)          /* CMSDK_UART STATE: TXOR Mask. */
+
+#define CMSDK_UART_STATE_RXBF_Pos         1                                             /* CMSDK_UART STATE: RXBF Position. */
+#define CMSDK_UART_STATE_RXBF_Msk         (0x1ul << CMSDK_UART_STATE_RXBF_Pos)          /* CMSDK_UART STATE: RXBF Mask. */
+
+#define CMSDK_UART_STATE_TXBF_Pos         0                                             /* CMSDK_UART STATE: TXBF Position. */
+#define CMSDK_UART_STATE_TXBF_Msk         (0x1ul << CMSDK_UART_STATE_TXBF_Pos )         /* CMSDK_UART STATE: TXBF Mask. */
+
+/* CMSDK_UART CTRL Register Definitions. */
+#define CMSDK_UART_CTRL_HSTM_Pos          6                                             /* CMSDK_UART CTRL: HSTM Position. */
+#define CMSDK_UART_CTRL_HSTM_Msk          (0x01ul << CMSDK_UART_CTRL_HSTM_Pos)          /* CMSDK_UART CTRL: HSTM Mask. */
+
+#define CMSDK_UART_CTRL_RXORIRQEN_Pos     5                                             /* CMSDK_UART CTRL: RXORIRQEN Position. */
+#define CMSDK_UART_CTRL_RXORIRQEN_Msk     (0x01ul << CMSDK_UART_CTRL_RXORIRQEN_Pos)     /* CMSDK_UART CTRL: RXORIRQEN Mask. */
+
+#define CMSDK_UART_CTRL_TXORIRQEN_Pos     4                                             /* CMSDK_UART CTRL: TXORIRQEN Position. */
+#define CMSDK_UART_CTRL_TXORIRQEN_Msk     (0x01ul << CMSDK_UART_CTRL_TXORIRQEN_Pos)     /* CMSDK_UART CTRL: TXORIRQEN Mask. */
+
+#define CMSDK_UART_CTRL_RXIRQEN_Pos       3                                             /* CMSDK_UART CTRL: RXIRQEN Position. */
+#define CMSDK_UART_CTRL_RXIRQEN_Msk       (0x01ul << CMSDK_UART_CTRL_RXIRQEN_Pos)       /* CMSDK_UART CTRL: RXIRQEN Mask. */
+
+#define CMSDK_UART_CTRL_TXIRQEN_Pos       2                                             /* CMSDK_UART CTRL: TXIRQEN Position. */
+#define CMSDK_UART_CTRL_TXIRQEN_Msk       (0x01ul << CMSDK_UART_CTRL_TXIRQEN_Pos)       /* CMSDK_UART CTRL: TXIRQEN Mask. */
+
+#define CMSDK_UART_CTRL_RXEN_Pos          1                                             /* CMSDK_UART CTRL: RXEN Position. */
+#define CMSDK_UART_CTRL_RXEN_Msk          (0x01ul << CMSDK_UART_CTRL_RXEN_Pos)          /* CMSDK_UART CTRL: RXEN Mask. */
+
+#define CMSDK_UART_CTRL_TXEN_Pos          0                                             /* CMSDK_UART CTRL: TXEN Position. */
+#define CMSDK_UART_CTRL_TXEN_Msk          (0x01ul << CMSDK_UART_CTRL_TXEN_Pos)          /* CMSDK_UART CTRL: TXEN Mask. */
+
+/* CMSDK_UART INTSTATUS\INTCLEAR Register Definitions. */
+#define CMSDK_UART_INT_RXORIRQ_Pos        3                                             /* CMSDK_UART INT: RXORIRQ Position. */
+#define CMSDK_UART_INT_RXORIRQ_Msk        (0x01ul << CMSDK_UART_INT_RXORIRQ_Pos)        /* CMSDK_UART INT: RXORIRQ Mask. */
+
+#define CMSDK_UART_INT_TXORIRQ_Pos        2                                             /* CMSDK_UART INT: TXORIRQ Position. */
+#define CMSDK_UART_INT_TXORIRQ_Msk        (0x01ul << CMSDK_UART_INT_TXORIRQ_Pos)        /* CMSDK_UART INT: TXORIRQ Mask. */
+
+#define CMSDK_UART_INT_RXIRQ_Pos          1                                             /* CMSDK_UART INT: RXIRQ Position. */
+#define CMSDK_UART_INT_RXIRQ_Msk          (0x01ul << CMSDK_UART_INT_RXIRQ_Pos)          /* CMSDK_UART INT: RXIRQ Mask. */
+
+#define CMSDK_UART_INT_TXIRQ_Pos          0                                             /* CMSDK_UART INT: TXIRQ Position. */
+#define CMSDK_UART_INT_TXIRQ_Msk          (0x01ul << CMSDK_UART_INT_TXIRQ_Pos)          /* CMSDK_UART INT: TXIRQ Mask. */
+
+/* CMSDK_UART BAUDDIV Register Definitions. */
+#define CMSDK_UART_BAUDDIV_Pos            0                                             /* CMSDK_UART BAUDDIV: BAUDDIV Position. */
+#define CMSDK_UART_BAUDDIV_Msk           (0xFFFFFul << CMSDK_UART_BAUDDIV_Pos)
+
+/**
+ * @brief   Gets the core clock set for MPS3.
+ * @return  Clock value in Hz.
+ **/
+uint32_t GetMPS3CoreClock(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* DEVICE_MPS3_H */
diff --git a/source/hal/platform/mps3/source/include/smm_mps3.h b/source/hal/platform/mps3/source/include/smm_mps3.h
new file mode 100644
index 0000000..5a2bcc5
--- /dev/null
+++ b/source/hal/platform/mps3/source/include/smm_mps3.h
@@ -0,0 +1,616 @@
+/*
+ * Copyright (c) 2021-2022 Arm Limited. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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.
+ */
+#ifndef SMM_MPS3_H
+#define SMM_MPS3_H
+
+#include "cmsis.h"                  /* For CPU related defintiions */
+#include "peripheral_memmap.h"      /* Peripheral memory map definitions. */
+
+
+#if defined ( __CC_ARM   )
+#pragma anon_unions
+#endif
+
+/******************************************************************************/
+/*                          FPGA System Register declaration                  */
+/******************************************************************************/
+
+typedef struct
+{
+  __IO uint32_t LED;             /* Offset: 0x000 (R/W)  LED connections
+                                  *                         [31:2] : Reserved
+                                  *                          [1:0] : LEDs
+                                  */
+       uint32_t RESERVED1[1];
+  __IO uint32_t BUTTON;          /* Offset: 0x008 (R/W)  Buttons
+                                  *                         [31:2] : Reserved
+                                  *                          [1:0] : Buttons
+                                  */
+       uint32_t RESERVED2[1];
+  __IO uint32_t CLK1HZ;          /* Offset: 0x010 (R/W)  1Hz up counter    */
+  __IO uint32_t CLK100HZ;        /* Offset: 0x014 (R/W)  100Hz up counter  */
+  __IO uint32_t COUNTER;         /* Offset: 0x018 (R/W)  Cycle Up Counter
+                                  *                         Increments when 32-bit prescale counter reach zero
+                                  */
+  __IO uint32_t PRESCALE;        /* Offset: 0x01C (R/W)  Prescaler
+                                  *                         Bit[31:0] : reload value for prescale counter
+                                  */
+  __IO uint32_t PSCNTR;          /* Offset: 0x020 (R/W)  32-bit Prescale counter
+                                  *                         current value of the pre-scaler counter
+                                  *                         The Cycle Up Counter increment when the prescale down counter reach 0
+                                  *                         The pre-scaler counter is reloaded with PRESCALE after reaching 0.
+                                  */
+       uint32_t RESERVED3[1];
+  __IO uint32_t SWITCHES;        /* Offset: 0x028 (R/W)  Switches
+                                  *                         [31:8] : Reserved
+                                  *                          [7:0] : Switches
+                                  */
+       uint32_t RESERVED4[8];
+  __IO uint32_t MISC;            /* Offset: 0x04C (R/W)  Misc control
+                                  *                         [31:10] : Reserved
+                                  *                            [9] :
+                                  *                            [8] :
+                                  *                            [7] : ADC_SPI_nCS
+                                  *                            [6] : CLCD_BL_CTRL
+                                  *                            [5] : CLCD_RD
+                                  *                            [4] : CLCD_RS
+                                  *                            [3] : CLCD_RESET
+                                  *                            [2] : SHIELD_1_SPI_nCS
+                                  *                            [1] : SHIELD_0_SPI_nCS
+                                  *                            [0] : CLCD_CS
+                                  */
+} MPS3_FPGAIO_TypeDef;
+
+/* MISC register bit definitions. */
+
+#define CLCD_CS_Pos        0
+#define CLCD_CS_Msk        (1UL<<CLCD_CS_Pos)
+#define SHIELD_0_nCS_Pos   1
+#define SHIELD_0_nCS_Msk   (1UL<<SHIELD_0_nCS_Pos)
+#define SHIELD_1_nCS_Pos   2
+#define SHIELD_1_nCS_Msk   (1UL<<SHIELD_1_nCS_Pos)
+#define CLCD_RESET_Pos     3
+#define CLCD_RESET_Msk     (1UL<<CLCD_RESET_Pos)
+#define CLCD_RS_Pos        4
+#define CLCD_RS_Msk        (1UL<<CLCD_RS_Pos)
+#define CLCD_RD_Pos        5
+#define CLCD_RD_Msk        (1UL<<CLCD_RD_Pos)
+#define CLCD_BL_Pos        6
+#define CLCD_BL_Msk        (1UL<<CLCD_BL_Pos)
+#define ADC_nCS_Pos        7
+#define ADC_nCS_Msk        (1UL<<ADC_nCS_Pos)
+
+/******************************************************************************/
+/*                        SCC Register declaration                            */
+/******************************************************************************/
+
+typedef struct
+{
+  __IO uint32_t CFG_REG0;        /* Offset: 0x000 (R/W)  Remaps block RAM to ZBT
+                                  *                         [31:1] : Reserved
+                                  *                            [0] 1 : REMAP BlockRam to ZBT
+                                  */
+  __IO uint32_t LEDS;            /* Offset: 0x004 (R/W)  Controls the MCC user LEDs
+                                  *                         [31:8] : Reserved
+                                  *                          [7:0] : MCC LEDs
+                                  */
+       uint32_t RESERVED0[1];
+  __I  uint32_t SWITCHES;        /* Offset: 0x00C (R/ )  Denotes the state of the MCC user switches
+                                  *                         [31:8] : Reserved
+                                  *                          [7:0] : These bits indicate state of the MCC switches
+                                  */
+  __I  uint32_t CFG_REG4;        /* Offset: 0x010 (R/ )  Denotes the board revision
+                                  *                         [31:4] : Reserved
+                                  *                          [3:0] : Used by the MCC to pass PCB revision. 0 = A 1 = B
+                                  */
+  __I  uint32_t CFG_ACLK;        /* Offset: 0x014 (R/ )  System Clock
+                                  */
+       uint32_t RESERVED1[34];
+  __IO uint32_t SYS_CFGDATA_RTN; /* Offset: 0x0A0 (R/W)  User data register
+                                  *                         [31:0] : Data
+                                  */
+  __IO uint32_t SYS_CFGDATA_OUT; /* Offset: 0x0A4 (R/W)  User data register
+                                  *                         [31:0] : Data
+                                  */
+  __IO uint32_t SYS_CFGCTRL;     /* Offset: 0x0A8 (R/W)  Control register
+                                  *                           [31] : Start (generates interrupt on write to this bit)
+                                  *                           [30] : R/W access
+                                  *                        [29:26] : Reserved
+                                  *                        [25:20] : Function value
+                                  *                        [19:12] : Reserved
+                                  *                         [11:0] : Device (value of 0/1/2 for supported clocks)
+                                  */
+  __IO uint32_t SYS_CFGSTAT;     /* Offset: 0x0AC (R/W)  Contains status information
+                                  *                         [31:2] : Reserved
+                                  *                            [1] : Error
+                                  *                            [0] : Complete
+                                  */
+  __IO uint32_t RESERVED2[20];
+  __IO uint32_t SCC_DLL;         /* Offset: 0x100 (R/W)  DLL Lock Register
+                                  *                        [31:24] : DLL LOCK MASK[7:0] - Indicate if the DLL locked is masked
+                                  *                        [23:16] : DLL LOCK MASK[7:0] - Indicate if the DLLs are locked or unlocked
+                                  *                         [15:1] : Reserved
+                                  *                            [0] : This bit indicates if all enabled DLLs are locked
+                                  */
+       uint32_t RESERVED3[957];
+  __I  uint32_t SCC_AID;         /* Offset: 0xFF8 (R/ )  SCC AID Register
+                                  *                        [31:24] : FPGA build number
+                                  *                        [23:20] : V2M-MPS3 target board revision (A = 0, B = 1)
+                                  *                        [19:11] : Reserved
+                                  *                           [10] : if “1” SCC_SW register has been implemented
+                                  *                            [9] : if “1” SCC_LED register has been implemented
+                                  *                            [8] : if “1” DLL lock register has been implemented
+                                  *                          [7:0] : number of SCC configuration register
+                                  */
+  __I  uint32_t SCC_ID;          /* Offset: 0xFFC (R/ )  Contains information about the FPGA image
+                                  *                        [31:24] : Implementer ID: 0x41 = ARM
+                                  *                        [23:20] : Application note IP variant number
+                                  *                        [19:16] : IP Architecture: 0x4 =AHB
+                                  *                         [15:4] : Primary part number: 386 = AN386
+                                  *                          [3:0] : Application note IP revision number
+                                  */
+} MPS3_SCC_TypeDef;
+
+
+/******************************************************************************/
+/*                        SSP Peripheral declaration                          */
+/******************************************************************************/
+
+typedef struct
+{
+  __IO uint32_t CR0;             /* Offset: 0x000 (R/W)  Control register 0
+                                  *                        [31:16] : Reserved
+                                  *                         [15:8] : Serial clock rate
+                                  *                            [7] : SSPCLKOUT phase,    applicable to Motorola SPI frame format only
+                                  *                            [6] : SSPCLKOUT polarity, applicable to Motorola SPI frame format only
+                                  *                          [5:4] : Frame format
+                                  *                          [3:0] : Data Size Select
+                                  */
+  __IO uint32_t CR1;             /* Offset: 0x004 (R/W)  Control register 1
+                                  *                         [31:4] : Reserved
+                                  *                            [3] : Slave-mode output disable
+                                  *                            [2] : Master or slave mode select
+                                  *                            [1] : Synchronous serial port enable
+                                  *                            [0] : Loop back mode
+                                  */
+  __IO uint32_t DR;              /* Offset: 0x008 (R/W)  Data register
+                                  *                        [31:16] : Reserved
+                                  *                         [15:0] : Transmit/Receive FIFO
+                                  */
+  __I  uint32_t SR;              /* Offset: 0x00C (R/ )  Status register
+                                  *                         [31:5] : Reserved
+                                  *                            [4] : PrimeCell SSP busy flag
+                                  *                            [3] : Receive FIFO full
+                                  *                            [2] : Receive FIFO not empty
+                                  *                            [1] : Transmit FIFO not full
+                                  *                            [0] : Transmit FIFO empty
+                                  */
+  __IO uint32_t CPSR;            /* Offset: 0x010 (R/W)  Clock prescale register
+                                  *                         [31:8] : Reserved
+                                  *                          [8:0] : Clock prescale divisor
+                                  */
+  __IO uint32_t IMSC;            /* Offset: 0x014 (R/W)  Interrupt mask set or clear register
+                                  *                         [31:4] : Reserved
+                                  *                            [3] : Transmit FIFO interrupt mask
+                                  *                            [2] : Receive FIFO interrupt mask
+                                  *                            [1] : Receive timeout interrupt mask
+                                  *                            [0] : Receive overrun interrupt mask
+                                  */
+  __I  uint32_t RIS;             /* Offset: 0x018 (R/ )  Raw interrupt status register
+                                  *                         [31:4] : Reserved
+                                  *                            [3] : raw interrupt state, prior to masking, of the SSPTXINTR interrupt
+                                  *                            [2] : raw interrupt state, prior to masking, of the SSPRXINTR interrupt
+                                  *                            [1] : raw interrupt state, prior to masking, of the SSPRTINTR interrupt
+                                  *                            [0] : raw interrupt state, prior to masking, of the SSPRORINTR interrupt
+                                  */
+  __I  uint32_t MIS;             /* Offset: 0x01C (R/ )  Masked interrupt status register
+                                  *                         [31:4] : Reserved
+                                  *                            [3] : transmit FIFO masked interrupt state, after masking, of the SSPTXINTR interrupt
+                                  *                            [2] : receive FIFO masked interrupt state, after masking, of the SSPRXINTR interrupt
+                                  *                            [1] : receive timeout masked interrupt state, after masking, of the SSPRTINTR interrupt
+                                  *                            [0] : receive over run masked interrupt status, after masking, of the SSPRORINTR interrupt
+                                  */
+  __O  uint32_t ICR;             /* Offset: 0x020 ( /W)  Interrupt clear register
+                                  *                         [31:2] : Reserved
+                                  *                            [1] : Clears the SSPRTINTR interrupt
+                                  *                            [0] : Clears the SSPRORINTR interrupt
+                                  */
+  __IO uint32_t DMACR;           /* Offset: 0x024 (R/W)  DMA control register
+                                  *                         [31:2] : Reserved
+                                  *                            [1] : Transmit DMA Enable
+                                  *                            [0] : Receive DMA Enable
+                                  */
+} MPS3_SSP_TypeDef;
+
+
+/* SSP_CR0 Control register 0. */
+#define SSP_CR0_DSS_Pos         0           /* Data Size Select.    */
+#define SSP_CR0_DSS_Msk         (0xF<<SSP_CR0_DSS_Pos)
+#define SSP_CR0_FRF_Pos         4           /* Frame Format Select. */
+#define SSP_CR0_FRF_Msk         (3UL<<SSP_CR0_FRM_Pos)
+#define SSP_CR0_SPO_Pos         6           /* SSPCLKOUT polarity.  */
+#define SSP_CR0_SPO_Msk         (1UL<<SSP_CR0_SPO_Pos)
+#define SSP_CR0_SPH_Pos         7           /* SSPCLKOUT phase.     */
+#define SSP_CR0_SPH_Msk         (1UL<<SSP_CR0_SPH_Pos)
+#define SSP_CR0_SCR_Pos         8           /* Serial Clock Rate (divide). */
+#define SSP_CR0_SCR_Msk         (0xFF<<SSP_CR0_SCR_Pos)
+
+#define SSP_CR0_SCR_DFLT        0x0300      /* Serial Clock Rate (divide), default set at 3. */
+#define SSP_CR0_FRF_MOT         0x0000      /* Frame format.                                 */
+#define SSP_CR0_DSS_8           0x0007      /* Data packet size, 8bits.                      */
+#define SSP_CR0_DSS_16          0x000F      /* Data packet size, 16bits.                     */
+
+/* SSP_CR1 Control register 1. */
+#define SSP_CR1_LBM_Pos         0           /* Loop Back Mode. */
+#define SSP_CR1_LBM_Msk         (1UL<<SSP_CR1_LBM_Pos)
+#define SSP_CR1_SSE_Pos         1           /* Serial port enable. */
+#define SSP_CR1_SSE_Msk         (1UL<<SSP_CR1_SSE_Pos)
+#define SSP_CR1_MS_Pos          2           /* Master or Slave mode. */
+#define SSP_CR1_MS_Msk          (1UL<<SSP_CR1_MS_Pos)
+#define SSP_CR1_SOD_Pos         3           /* Slave Output mode Disable. */
+#define SSP_CR1_SOD_Msk         (1UL<<SSP_CR1_SOD_Pos)
+
+/* SSP_SR Status register. */
+#define SSP_SR_TFE_Pos          0           /* Transmit FIFO empty. */
+#define SSP_SR_TFE_Msk          (1UL<<SSP_SR_TFE_Pos)
+#define SSP_SR_TNF_Pos          1           /* Transmit FIFO not full. */
+#define SSP_SR_TNF_Msk          (1UL<<SSP_SR_TNF_Pos)
+#define SSP_SR_RNE_Pos          2           /* Receive  FIFO not empty. */
+#define SSP_SR_RNE_Msk          (1UL<<SSP_SR_RNE_Pos)
+#define SSP_SR_RFF_Pos          3           /* Receive  FIFO full. */
+#define SSP_SR_RFF_Msk          (1UL<<SSP_SR_RFF_Pos)
+#define SSP_SR_BSY_Pos          4           /* Busy. */
+#define SSP_SR_BSY_Msk          (1UL<<SSP_SR_BSY_Pos)
+
+/* SSP_CPSR Clock prescale register. */
+#define SSP_CPSR_CPD_Pos        0           /* Clock prescale divisor. */
+#define SSP_CPSR_CPD_Msk        (0xFF<<SSP_CPSR_CDP_Pos)
+
+#define SSP_CPSR_DFLT        0x0008      /* Clock prescale (use with SCR), default set at 8. */
+
+/* SSPIMSC Interrupt mask set and clear register. */
+#define SSP_IMSC_RORIM_Pos         0           /* Receive overrun not Masked. */
+#define SSP_IMSC_RORIM_Msk         (1UL<<SSP_IMSC_RORIM_Pos)
+#define SSP_IMSC_RTIM_Pos          1           /* Receive timeout not Masked. */
+#define SSP_IMSC_RTIM_Msk          (1UL<<SSP_IMSC_RTIM_Pos)
+#define SSP_IMSC_RXIM_Pos          2           /* Receive  FIFO not Masked.   */
+#define SSP_IMSC_RXIM_Msk          (1UL<<SSP_IMSC_RXIM_Pos)
+#define SSP_IMSC_TXIM_Pos          3           /* Transmit FIFO not Masked.   */
+#define SSP_IMSC_TXIM_Msk          (1UL<<SSP_IMSC_TXIM_Pos)
+
+/* SSPRIS Raw interrupt status register. */
+#define SSP_RIS_RORRIS_Pos         0           /* Raw Overrun  interrupt flag. */
+#define SSP_RIS_RORRIS_Msk         (1UL<<SSP_RIS_RORRIS_Pos)
+#define SSP_RIS_RTRIS_Pos          1           /* Raw Timemout interrupt flag. */
+#define SSP_RIS_RTRIS_Msk          (1UL<<SSP_RIS_RTRIS_Pos)
+#define SSP_RIS_RXRIS_Pos          2           /* Raw Receive  interrupt flag. */
+#define SSP_RIS_RXRIS_Msk          (1UL<<SSP_RIS_RXRIS_Pos)
+#define SSP_RIS_TXRIS_Pos          3           /* Raw Transmit interrupt flag. */
+#define SSP_RIS_TXRIS_Msk          (1UL<<SSP_RIS_TXRIS_Pos)
+
+/* SSPMIS Masked interrupt status register. */
+#define SSP_MIS_RORMIS_Pos         0           /* Masked Overrun  interrupt flag. */
+#define SSP_MIS_RORMIS_Msk         (1UL<<SSP_MIS_RORMIS_Pos)
+#define SSP_MIS_RTMIS_Pos          1           /* Masked Timemout interrupt flag. */
+#define SSP_MIS_RTMIS_Msk          (1UL<<SSP_MIS_RTMIS_Pos)
+#define SSP_MIS_RXMIS_Pos          2           /* Masked Receive  interrupt flag. */
+#define SSP_MIS_RXMIS_Msk          (1UL<<SSP_MIS_RXMIS_Pos)
+#define SSP_MIS_TXMIS_Pos          3           /* Masked Transmit interrupt flag. */
+#define SSP_MIS_TXMIS_Msk          (1UL<<SSP_MIS_TXMIS_Pos)
+
+/* SSPICR Interrupt clear register. */
+#define SSP_ICR_RORIC_Pos           0           /* Clears Overrun  interrupt flag. */
+#define SSP_ICR_RORIC_Msk           (1UL<<SSP_ICR_RORIC_Pos)
+#define SSP_ICR_RTIC_Pos            1           /* Clears Timemout interrupt flag. */
+#define SSP_ICR_RTIC_Msk            (1UL<<SSP_ICR_RTIC_Pos)
+
+/* SSPDMACR DMA control register. */
+#define SSP_DMACR_RXDMAE_Pos        0           /* Enable Receive  FIFO DMA. */
+#define SSP_DMACR_RXDMAE_Msk        (1UL<<SSP_DMACR_RXDMAE_Pos)
+#define SSP_DMACR_TXDMAE_Pos        1           /* Enable Transmit FIFO DMA. */
+#define SSP_DMACR_TXDMAE_Msk        (1UL<<SSP_DMACR_TXDMAE_Pos)
+
+/******************************************************************************/
+/*               Audio and Touch Screen (I2C) Peripheral declaration          */
+/******************************************************************************/
+
+typedef struct
+{
+  union {
+  __O   uint32_t  CONTROLS;     /* Offset: 0x000 CONTROL Set Register     ( /W). */
+  __I   uint32_t  CONTROL;      /* Offset: 0x000 CONTROL Status Register  (R/ ). */
+  };
+  __O    uint32_t  CONTROLC;     /* Offset: 0x004 CONTROL Clear Register  ( /W). */
+} MPS3_I2C_TypeDef;
+
+#define SDA                1 << 1
+#define SCL                1 << 0
+
+
+/******************************************************************************/
+/*               Audio I2S Peripheral declaration                             */
+/******************************************************************************/
+
+typedef struct
+{
+  /*!< Offset: 0x000 CONTROL Register    (R/W) */
+  __IO   uint32_t  CONTROL;  /* <h> CONTROL </h>
+                              *   <o.0> TX Enable
+                              *     <0=> TX disabled
+                              *     <1=> TX enabled
+                              *   <o.1> TX IRQ Enable
+                              *     <0=> TX IRQ disabled
+                              *     <1=> TX IRQ enabled
+                              *   <o.2> RX Enable
+                              *     <0=> RX disabled
+                              *     <1=> RX enabled
+                              *   <o.3> RX IRQ Enable
+                              *     <0=> RX IRQ disabled
+                              *     <1=> RX IRQ enabled
+                              *   <o.10..8> TX Buffer Water Level
+                              *     <0=> / IRQ triggers when any space available
+                              *     <1=> / IRQ triggers when more than 1 space available
+                              *     <2=> / IRQ triggers when more than 2 space available
+                              *     <3=> / IRQ triggers when more than 3 space available
+                              *     <4=> Undefined!
+                              *     <5=> Undefined!
+                              *     <6=> Undefined!
+                              *     <7=> Undefined!
+                              *   <o.14..12> RX Buffer Water Level
+                              *     <0=> Undefined!
+                              *     <1=> / IRQ triggers when less than 1 space available
+                              *     <2=> / IRQ triggers when less than 2 space available
+                              *     <3=> / IRQ triggers when less than 3 space available
+                              *     <4=> / IRQ triggers when less than 4 space available
+                              *     <5=> Undefined!
+                              *     <6=> Undefined!
+                              *     <7=> Undefined!
+                              *   <o.16> FIFO reset
+                              *     <0=> Normal operation
+                              *     <1=> FIFO reset
+                              *   <o.17> Audio Codec reset
+                              *     <0=> Normal operation
+                              *     <1=> Assert audio Codec reset
+                              */
+  /*!< Offset: 0x004 STATUS Register     (R/ ) */
+  __I    uint32_t  STATUS;   /* <h> STATUS </h>
+                              *   <o.0> TX Buffer alert
+                              *     <0=> TX buffer don't need service yet
+                              *     <1=> TX buffer need service
+                              *   <o.1> RX Buffer alert
+                              *     <0=> RX buffer don't need service yet
+                              *     <1=> RX buffer need service
+                              *   <o.2> TX Buffer Empty
+                              *     <0=> TX buffer have data
+                              *     <1=> TX buffer empty
+                              *   <o.3> TX Buffer Full
+                              *     <0=> TX buffer not full
+                              *     <1=> TX buffer full
+                              *   <o.4> RX Buffer Empty
+                              *     <0=> RX buffer have data
+                              *     <1=> RX buffer empty
+                              *   <o.5> RX Buffer Full
+                              *     <0=> RX buffer not full
+                              *     <1=> RX buffer full
+                              */
+  union {
+   /*!< Offset: 0x008 Error Status Register (R/ ) */
+    __I    uint32_t  ERROR;  /* <h> ERROR </h>
+                              *   <o.0> TX error
+                              *     <0=> Okay
+                              *     <1=> TX overrun/underrun
+                              *   <o.1> RX error
+                              *     <0=> Okay
+                              *     <1=> RX overrun/underrun
+                              */
+   /*!< Offset: 0x008 Error Clear Register  ( /W) */
+    __O    uint32_t  ERRORCLR; /* <h> ERRORCLR </h>
+                                *   <o.0> TX error
+                                *     <0=> Okay
+                                *     <1=> Clear TX error
+                                *   <o.1> RX error
+                                *     <0=> Okay
+                                *     <1=> Clear RX error
+                                */
+    };
+   /*!< Offset: 0x00C Divide ratio Register (R/W) */
+  __IO   uint32_t  DIVIDE;  /* <h> Divide ratio for Left/Right clock </h>
+                             *   <o.9..0> TX error (default 0x80)
+                             */
+   /*!< Offset: 0x010 Transmit Buffer       ( /W) */
+  __O    uint32_t  TXBUF;  /* <h> Transmit buffer </h>
+                            *   <o.15..0> Right channel
+                            *   <o.31..16> Left channel
+                            */
+
+   /*!< Offset: 0x014 Receive Buffer        (R/ ) */
+  __I    uint32_t  RXBUF;  /* <h> Receive buffer </h>
+                            *   <o.15..0> Right channel
+                            *   <o.31..16> Left channel
+                            */
+         uint32_t  RESERVED1[186];
+  __IO uint32_t ITCR;        /* <h> Integration Test Control Register </h>
+                              *   <o.0> ITEN
+                              *     <0=> Normal operation
+                              *     <1=> Integration Test mode enable
+                              */
+  __O  uint32_t ITIP1;       /* <h> Integration Test Input Register 1</h>
+                              *   <o.0> SDIN
+                              */
+  __O  uint32_t ITOP1;       /* <h> Integration Test Output Register 1</h>
+                              *   <o.0> SDOUT
+                              *   <o.1> SCLK
+                              *   <o.2> LRCK
+                              *   <o.3> IRQOUT
+                              */
+} MPS3_I2S_TypeDef;
+
+#define I2S_CONTROL_TXEN_Pos        0
+#define I2S_CONTROL_TXEN_Msk        (1UL<<I2S_CONTROL_TXEN_Pos)
+
+#define I2S_CONTROL_TXIRQEN_Pos     1
+#define I2S_CONTROL_TXIRQEN_Msk     (1UL<<I2S_CONTROL_TXIRQEN_Pos)
+
+#define I2S_CONTROL_RXEN_Pos        2
+#define I2S_CONTROL_RXEN_Msk        (1UL<<I2S_CONTROL_RXEN_Pos)
+
+#define I2S_CONTROL_RXIRQEN_Pos     3
+#define I2S_CONTROL_RXIRQEN_Msk     (1UL<<I2S_CONTROL_RXIRQEN_Pos)
+
+#define I2S_CONTROL_TXWLVL_Pos      8
+#define I2S_CONTROL_TXWLVL_Msk      (7UL<<I2S_CONTROL_TXWLVL_Pos)
+
+#define I2S_CONTROL_RXWLVL_Pos      12
+#define I2S_CONTROL_RXWLVL_Msk      (7UL<<I2S_CONTROL_RXWLVL_Pos)
+/* FIFO reset. */
+#define I2S_CONTROL_FIFORST_Pos     16
+#define I2S_CONTROL_FIFORST_Msk     (1UL<<I2S_CONTROL_FIFORST_Pos)
+/* Codec reset. */
+#define I2S_CONTROL_CODECRST_Pos    17
+#define I2S_CONTROL_CODECRST_Msk    (1UL<<I2S_CONTROL_CODECRST_Pos)
+
+#define I2S_STATUS_TXIRQ_Pos        0
+#define I2S_STATUS_TXIRQ_Msk        (1UL<<I2S_STATUS_TXIRQ_Pos)
+
+#define I2S_STATUS_RXIRQ_Pos        1
+#define I2S_STATUS_RXIRQ_Msk        (1UL<<I2S_STATUS_RXIRQ_Pos)
+
+#define I2S_STATUS_TXEmpty_Pos      2
+#define I2S_STATUS_TXEmpty_Msk      (1UL<<I2S_STATUS_TXEmpty_Pos)
+
+#define I2S_STATUS_TXFull_Pos       3
+#define I2S_STATUS_TXFull_Msk       (1UL<<I2S_STATUS_TXFull_Pos)
+
+#define I2S_STATUS_RXEmpty_Pos      4
+#define I2S_STATUS_RXEmpty_Msk      (1UL<<I2S_STATUS_RXEmpty_Pos)
+
+#define I2S_STATUS_RXFull_Pos       5
+#define I2S_STATUS_RXFull_Msk       (1UL<<I2S_STATUS_RXFull_Pos)
+
+#define I2S_ERROR_TXERR_Pos         0
+#define I2S_ERROR_TXERR_Msk         (1UL<<I2S_ERROR_TXERR_Pos)
+
+#define I2S_ERROR_RXERR_Pos         1
+#define I2S_ERROR_RXERR_Msk         (1UL<<I2S_ERROR_RXERR_Pos)
+
+/******************************************************************************/
+/*                       SMSC9220 Register Definitions                        */
+/******************************************************************************/
+
+typedef struct                         /*   SMSC LAN9220                                  */
+{
+__I   uint32_t  RX_DATA_PORT;          /*   Receive FIFO Ports (offset 0x0).              */
+      uint32_t  RESERVED1[0x7];
+__O   uint32_t  TX_DATA_PORT;          /*   Transmit FIFO Ports (offset 0x20).            */
+      uint32_t  RESERVED2[0x7];
+
+__I   uint32_t  RX_STAT_PORT;          /*   Receive FIFO status port (offset 0x40).       */
+__I   uint32_t  RX_STAT_PEEK;          /*   Receive FIFO status peek (offset 0x44).       */
+__I   uint32_t  TX_STAT_PORT;          /*   Transmit FIFO status port (offset 0x48).      */
+__I   uint32_t  TX_STAT_PEEK;          /*   Transmit FIFO status peek (offset 0x4C).      */
+
+__I   uint32_t  ID_REV;                /*   Chip ID and Revision (offset 0x50).           */
+__IO  uint32_t  IRQ_CFG;               /*   Main Interrupt Configuration (offset 0x54).   */
+__IO  uint32_t  INT_STS;               /*   Interrupt Status (offset 0x58).               */
+__IO  uint32_t  INT_EN;                /*   Interrupt Enable Register (offset 0x5C).      */
+      uint32_t  RESERVED3;             /*   Reserved for future use (offset 0x60).        */
+__I   uint32_t  BYTE_TEST;             /*   Read-only byte order testing register 87654321h (offset 0x64). */
+__IO  uint32_t  FIFO_INT;              /*   FIFO Level Interrupts (offset 0x68).          */
+__IO  uint32_t  RX_CFG;                /*   Receive Configuration (offset 0x6C).          */
+__IO  uint32_t  TX_CFG;                /*   Transmit Configuration (offset 0x70).         */
+__IO  uint32_t  HW_CFG;                /*   Hardware Configuration (offset 0x74).         */
+__IO  uint32_t  RX_DP_CTL;             /*   RX Datapath Control (offset 0x78).            */
+__I   uint32_t  RX_FIFO_INF;           /*   Receive FIFO Information (offset 0x7C).       */
+__I   uint32_t  TX_FIFO_INF;           /*   Transmit FIFO Information (offset 0x80).      */
+__IO  uint32_t  PMT_CTRL;              /*   Power Management Control (offset 0x84).       */
+__IO  uint32_t  GPIO_CFG;              /*   General Purpose IO Configuration (offset 0x88). */
+__IO  uint32_t  GPT_CFG;               /*   General Purpose Timer Configuration (offset 0x8C). */
+__I   uint32_t  GPT_CNT;               /*   General Purpose Timer Count (offset 0x90).    */
+      uint32_t  RESERVED4;             /*   Reserved for future use (offset 0x94).        */
+__IO  uint32_t  ENDIAN;                /*   WORD SWAP Register (offset 0x98).             */
+__I   uint32_t  FREE_RUN;              /*   Free Run Counter (offset 0x9C).               */
+__I   uint32_t  RX_DROP;               /*   RX Dropped Frames Counter (offset 0xA0).      */
+__IO  uint32_t  MAC_CSR_CMD;           /*   MAC CSR Synchronizer Command (offset 0xA4).   */
+__IO  uint32_t  MAC_CSR_DATA;          /*   MAC CSR Synchronizer Data (offset 0xA8).      */
+__IO  uint32_t  AFC_CFG;               /*   Automatic Flow Control Configuration (offset 0xAC). */
+__IO  uint32_t  E2P_CMD;               /*   EEPROM Command (offset 0xB0).                 */
+__IO  uint32_t  E2P_DATA;              /*   EEPROM Data (offset 0xB4).                    */
+
+} SMSC9220_TypeDef;
+
+/* SMSC9220 MAC Registers       Indices. */
+#define SMSC9220_MAC_CR         0x1
+#define SMSC9220_MAC_ADDRH      0x2
+#define SMSC9220_MAC_ADDRL      0x3
+#define SMSC9220_MAC_HASHH      0x4
+#define SMSC9220_MAC_HASHL      0x5
+#define SMSC9220_MAC_MII_ACC    0x6
+#define SMSC9220_MAC_MII_DATA   0x7
+#define SMSC9220_MAC_FLOW       0x8
+#define SMSC9220_MAC_VLAN1      0x9
+#define SMSC9220_MAC_VLAN2      0xA
+#define SMSC9220_MAC_WUFF       0xB
+#define SMSC9220_MAC_WUCSR      0xC
+
+/* SMSC9220 PHY Registers       Indices. */
+#define SMSC9220_PHY_BCONTROL   0x0
+#define SMSC9220_PHY_BSTATUS    0x1
+#define SMSC9220_PHY_ID1        0x2
+#define SMSC9220_PHY_ID2        0x3
+#define SMSC9220_PHY_ANEG_ADV   0x4
+#define SMSC9220_PHY_ANEG_LPA   0x5
+#define SMSC9220_PHY_ANEG_EXP   0x6
+#define SMSC9220_PHY_MCONTROL   0x17
+#define SMSC9220_PHY_MSTATUS    0x18
+#define SMSC9220_PHY_CSINDICATE 0x27
+#define SMSC9220_PHY_INTSRC     0x29
+#define SMSC9220_PHY_INTMASK    0x30
+#define SMSC9220_PHY_CS         0x31
+
+/******************************************************************************/
+/*                         Peripheral declaration                             */
+/******************************************************************************/
+
+#define MPS3_TS_I2C             ((MPS3_I2C_TypeDef      *) MPS3_I2C0_BASE )
+#define MPS3_AAIC_I2C           ((MPS3_I2C_TypeDef      *) MPS3_I2C1_BASE )
+#define MPS3_CAM_I2C2           ((MPS3_I2C_TypeDef      *) MPS3_I2C2_BASE )
+#define MPS3_CAM_I2C3           ((MPS3_I2C_TypeDef      *) MPS3_I2C3_BASE )
+#define MPS3_AAIC_I2S           ((MPS3_I2S_TypeDef      *) MPS3_AAIC_I2S_BASE )
+#define MPS3_FPGAIO             ((MPS3_FPGAIO_TypeDef   *) MPS3_FPGAIO_BASE )
+#define MPS3_SCC                ((MPS3_SCC_TypeDef      *) MPS3_SCC_BASE )
+#define MPS3_SSP0               ((MPS3_SSP_TypeDef      *) MPS3_SSP0_BASE )
+#define MPS3_SSP1               ((MPS3_SSP_TypeDef      *) MPS3_SSP1_BASE )
+#define MPS3_SSP2               ((MPS3_SSP_TypeDef      *) MPS3_SSP2_BASE )
+#define MPS3_SSP3               ((MPS3_SSP_TypeDef      *) MPS3_SSP3_BASE )
+#define MPS3_SSP4               ((MPS3_SSP_TypeDef      *) MPS3_SSP4_BASE )
+#define SMSC9220                ((SMSC9220_TypeDef      *) SMSC9220_BASE)
+
+/******************************************************************************/
+/*                      Secure Peripheral declaration                         */
+/******************************************************************************/
+
+#define SEC_TS_I2C             ((MPS3_I2C_TypeDef      *) SEC_MPS3_I2C0_BASE )
+#define SEC_AAIC_I2C           ((MPS3_I2C_TypeDef      *) SEC_MPS3_I2C1_BASE )
+#define SEC_AAIC_I2S           ((MPS3_I2S_TypeDef      *) SEC_MPS3_AAIC_I2S_BASE )
+#define SEC_FPGAIO             ((MPS3_FPGAIO_TypeDef   *) SEC_MPS3_FPGAIO_BASE )
+#define SEC_SCC                ((MPS3_SCC_TypeDef      *) SEC_MPS3_SCC_BASE )
+#define SEC_SSP0               ((MPS3_SSP_TypeDef      *) SEC_SSP0_BASE )
+#define SEC_SSP1               ((MPS3_SSP_TypeDef      *) SEC_SSP1_BASE )
+#define SEC_SSP2               ((MPS3_SSP_TypeDef      *) SEC_MPS3_SSP2_BASE )
+#define SEC_SMSC9220           ((SMSC9220_TypeDef      *) SEC_SMSC9220_BASE)
+
+#endif /* SMM_MPS3_H */
diff --git a/source/hal/platform/mps3/source/platform_drivers.c b/source/hal/platform/mps3/source/platform_drivers.c
new file mode 100644
index 0000000..da2b39c
--- /dev/null
+++ b/source/hal/platform/mps3/source/platform_drivers.c
@@ -0,0 +1,131 @@
+/*
+ * Copyright (c) 2022 Arm Limited. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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.
+ */
+
+#include "platform_drivers.h"
+
+#include "uart_stdout.h"    /* stdout over UART. */
+#include "log_macros.h"     /* Logging functions */
+#include "device_mps3.h"    /* FPGA level definitions and functions. */
+
+#include <string.h>         /* For strncpy */
+
+/**
+ * @brief   Checks if the platform is valid by checking
+ *          the CPU ID for the FPGA implementation against
+ *          the register from the CPU core.
+ * @return  0 if successful, 1 otherwise
+ */
+static int verify_platform(void);
+
+int platform_init(void)
+{
+    int err = 0;
+
+    SystemCoreClockUpdate();    /* From start up code */
+
+    /* UART init - will enable valid use of printf (stdout
+     * re-directed at this UART (UART0) */
+    UartStdOutInit();
+
+    if (0 != (err = verify_platform())) {
+        return err;
+    }
+
+    /** TODO: Add ARM NPU and TA init here */
+    return 0;
+}
+
+void platform_release(void)
+{
+    __disable_irq();
+}
+
+void platform_name(char* name, size_t size)
+{
+    strncpy(name, DESIGN_NAME, size);
+}
+
+#define CREATE_MASK(msb, lsb)           (int)(((1U << ((msb) - (lsb) + 1)) - 1) << (lsb))
+#define MASK_BITS(arg, msb, lsb)        (int)((arg) & CREATE_MASK(msb, lsb))
+#define EXTRACT_BITS(arg, msb, lsb)     (int)(MASK_BITS(arg, msb, lsb) >> (lsb))
+
+static int verify_platform(void)
+{
+    uint32_t id = 0;
+    uint32_t fpgaid = 0;
+    uint32_t apnote = 0;
+    uint32_t rev = 0;
+    uint32_t aid = 0;
+    uint32_t fpga_clk = 0;
+    const uint32_t ascii_A = (uint32_t)('A');
+
+    /* Initialise the LEDs as the switches are */
+    MPS3_FPGAIO->LED = MPS3_FPGAIO->SWITCHES & 0xFF;
+
+    info("Processor internal clock: %" PRIu32 "Hz\n", GetMPS3CoreClock());
+
+    /* Get revision information from various registers */
+    rev = MPS3_SCC->CFG_REG4;
+    fpgaid = MPS3_SCC->SCC_ID;
+    aid = MPS3_SCC->SCC_AID;
+    apnote = EXTRACT_BITS(fpgaid, 15, 4);
+    fpga_clk = GetMPS3CoreClock();
+
+    info("V2M-MPS3 revision %c\n\n", (char)(rev + ascii_A));
+    info("Application Note AN%" PRIx32 ", Revision %c\n", apnote,
+        (char)(EXTRACT_BITS(aid, 23, 20) + ascii_A));
+    info("MPS3 build %d\n", EXTRACT_BITS(aid, 31, 24));
+    info("MPS3 core clock has been set to: %" PRIu32 "Hz\n", fpga_clk);
+
+    /* Display CPU ID */
+    id = SCB->CPUID;
+    info("CPU ID: 0x%08" PRIx32 "\n", id);
+
+    if(EXTRACT_BITS(id, 15, 8) == 0xD2) {
+        if (EXTRACT_BITS(id, 7, 4) == 2) {
+            info ("CPU: Cortex-M55 r%dp%d\n\n",
+                EXTRACT_BITS(id, 23, 20),EXTRACT_BITS(id, 3, 0));
+#if defined (CPU_CORTEX_M55)
+            /* CPU ID should be "0x_41_0f_d2_20" for Cortex-M55 */
+            return 0;
+#endif /* CPU_CORTEX_M55 */
+        } else if (EXTRACT_BITS(id, 7, 4) == 1) {
+            info ("CPU: Cortex-M33 r%dp%d\n\n",
+                EXTRACT_BITS(id, 23, 20),EXTRACT_BITS(id, 3, 0));
+#if defined (CPU_CORTEX_M33)
+            return 0;
+#endif /* CPU_CORTEX_M33 */
+        } else if (EXTRACT_BITS(id, 7, 4) == 0) {
+            info ("CPU: Cortex-M23 r%dp%d\n\n",
+                EXTRACT_BITS(id, 23, 20),EXTRACT_BITS(id, 3, 0));
+        } else {
+            info ("CPU: Cortex-M processor family");
+        }
+    } else if (EXTRACT_BITS(id, 15, 8) == 0xC6) {
+        info ("CPU: Cortex-M%d+ r%dp%d\n\n",
+            EXTRACT_BITS(id, 7, 4), EXTRACT_BITS(id, 23, 20),
+            EXTRACT_BITS(id, 3, 0));
+    } else {
+        info ("CPU: Cortex-M%d r%dp%d\n\n",
+            EXTRACT_BITS(id, 7, 4), EXTRACT_BITS(id, 23, 20),
+            EXTRACT_BITS(id, 3, 0));
+    }
+
+    /* If the CPU is anything other than M33 or M55, we return 1 */
+    printf_err("CPU mismatch!\n");
+    return 1;
+}
diff --git a/source/hal/platform/mps3/source/timer_mps3.c b/source/hal/platform/mps3/source/timer_mps3.c
index 9b8914c..16ff4cd 100644
--- a/source/hal/platform/mps3/source/timer_mps3.c
+++ b/source/hal/platform/mps3/source/timer_mps3.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021 Arm Limited. All rights reserved.
+ * Copyright (c) 2021-2022 Arm Limited. All rights reserved.
  * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -19,7 +19,18 @@
 #include "log_macros.h"
 #include "device_mps3.h"
 
-#include <inttypes.h>
+static uint64_t cpu_cycle_count = 0;    /* 64-bit cpu cycle counter */
+
+/**
+ * @brief   Gets the system tick triggered cycle counter for the CPU.
+ * @return  64-bit counter value.
+ **/
+static uint64_t Get_SysTick_Cycle_Count(void);
+
+/**
+ * SysTick initialisation
+ */
+static int Init_SysTick(void);
 
 void timer_reset(void)
 {
@@ -111,3 +122,52 @@
 {
     /* Nothing to do for FPGA */
 }
+
+void SysTick_Handler(void)
+{
+    /* Increment the cycle counter based on load value. */
+    cpu_cycle_count += SysTick->LOAD + 1;
+}
+
+/**
+ * Gets the current SysTick derived counter value
+ */
+static uint64_t Get_SysTick_Cycle_Count(void)
+{
+    uint32_t systick_val;
+
+    NVIC_DisableIRQ(SysTick_IRQn);
+    systick_val = SysTick->VAL & SysTick_VAL_CURRENT_Msk;
+    NVIC_EnableIRQ(SysTick_IRQn);
+
+    return cpu_cycle_count + (SysTick->LOAD - systick_val);
+}
+
+/**
+ * SysTick initialisation
+ */
+static int Init_SysTick(void)
+{
+    const uint32_t ticks_10ms = GetMPS3CoreClock()/100 + 1;
+    int err = 0;
+
+    /* Reset CPU cycle count value. */
+    cpu_cycle_count = 0;
+
+    /* Changing configuration for sys tick => guard from being
+     * interrupted. */
+    NVIC_DisableIRQ(SysTick_IRQn);
+
+    /* SysTick init - this will enable interrupt too. */
+    err = SysTick_Config(ticks_10ms);
+
+    /* Enable interrupt again. */
+    NVIC_EnableIRQ(SysTick_IRQn);
+
+    /* Wait for SysTick to kick off */
+    while (!err && !SysTick->VAL) {
+        __NOP();
+    }
+
+    return err;
+}