board: add CortexR52 FVP AEMv8R platform

see board/arm/fvp-v8r-aarch32/fvp-armv8r-aarch32/scripts/readme.txt

Port is highly based on fvp-v8r AARCH32 port.

arch/arm/Kconfig

@@ -80,6 +80,15 @@ config ARCH_CHIP_AM335X
 	---help---
 		TI AM335X family: AM3356, AM3357, AM3358, AM3359 (ARM Cortex-A8)
 
+config ARCH_CHIP_FVP_ARMV8R_AARCH32
+	bool "ARM FVP virt platform (ARMv8r AARCH32)"
+	select ARCH_ARMV8R
+	select ARCH_HAVE_LOWVECTORS
+	select ARCH_HAVE_FETCHADD
+	select ARMV8R_HAVE_DECODEFIQ
+	---help---
+		ARM FVP virt platform (ARMv8r)
+
 config ARCH_CHIP_C5471
 	bool "TMS320 C5471"
 	select ARCH_ARM7TDMI
@@ -952,11 +961,13 @@ config ARCH_FAMILY
 	default "armv7-m"	if ARCH_ARMV7M
 	default "armv7-r"	if ARCH_ARMV7R
 	default "armv8-m"	if ARCH_ARMV8M
+	default "armv8-r"	if ARCH_ARMV8R
 
 config ARCH_CHIP
 	string
 	default "a1x"		if ARCH_CHIP_A1X
 	default "am335x"	if ARCH_CHIP_AM335X
+	default "fvp-v8r-aarch32"	if ARCH_CHIP_FVP_ARMV8R_AARCH32
 	default "c5471"		if ARCH_CHIP_C5471
 	default "dm320"		if ARCH_CHIP_DM320
 	default "efm32"		if ARCH_CHIP_EFM32
@@ -1341,6 +1352,9 @@ endif
 if ARCH_CHIP_AM335X
 source "arch/arm/src/am335x/Kconfig"
 endif
+if ARCH_CHIP_FVP_ARMV8R_AARCH32
+source "arch/arm/src/fvp-v8r-aarch32/Kconfig"
+endif
 if ARCH_CHIP_C5471
 source "arch/arm/src/c5471/Kconfig"
 endif

arch/arm/include/fvp-v8r-aarch32/chip.h

@@ -0,0 +1,63 @@
+/****************************************************************************
+ * arch/arm/include/fvp-v8r-aarch32/chip.h
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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 __ARCH_ARM_INCLUDE_FVP_V8R_CHIP_H
+#define __ARCH_ARM_INCLUDE_FVP_V8R_CHIP_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/* Number of bytes in @p x kibibytes/mebibytes/gibibytes */
+
+#define KB(x)           ((x) << 10)
+#define MB(x)           (KB(x) << 10)
+#define GB(x)           (MB(UINT64_C(x)) << 10)
+
+#if defined(CONFIG_ARCH_CHIP_FVP_ARMV8R_AARCH32)
+
+#define CONFIG_GICD_BASE          0xAF000000
+#define CONFIG_GICR_BASE          0xAF100000
+#define CONFIG_GICR_OFFSET        0x20000
+
+#define CONFIG_RAMBANK_ADDR      0x00000000
+#define CONFIG_RAMBANK_SIZE      MB(128)
+#define CONFIG_RAMBANK_END       \
+        (CONFIG_RAMBANK_ADDR + CONFIG_RAMBANK_SIZE)
+
+#define CONFIG_DEVICEIO1_BASEADDR  0xAF000000
+#define CONFIG_DEVICEIO1_SIZE      MB(128)
+#define CONFIG_DEVICEIO1_END       \
+        (CONFIG_DEVICEIO1_BASEADDR + CONFIG_DEVICEIO1_SIZE)
+
+#define CONFIG_DEVICEIO2_BASEADDR  0x9C000000
+#define CONFIG_DEVICEIO2_SIZE      MB(128)
+#define CONFIG_DEVICEIO2_END       \
+        (CONFIG_DEVICEIO2_BASEADDR + CONFIG_DEVICEIO2_SIZE)
+
+#define CONFIG_LOAD_BASE          0x00000000
+
+#define MPID_TO_CLUSTER_ID(mpid)  ((mpid) & ~0xff)
+
+#endif
+
+#endif /* __ARCH_ARM_INCLUDE_FVP_V8R_CHIP_H */

arch/arm/include/fvp-v8r-aarch32/irq.h

@@ -0,0 +1,34 @@
+/****************************************************************************
+ * arch/arm/include/fvp-v8r-aarch32/irq.h
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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.
+ *
+ ****************************************************************************/
+
+/* This file should never be included directly but, rather,
+ * only indirectly through nuttx/irq.h
+ */
+
+#ifndef __ARCH_ARM64_INCLUDE_FVP_V8R_IRQ_H
+#define __ARCH_ARM64_INCLUDE_FVP_V8R_IRQ_H
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#define NR_IRQS                 220  /* Total number of interrupts */
+
+#endif /* __ARCH_ARM64_INCLUDE_FVP_V8R_IRQ_H */

arch/arm/src/armv8-r/arm_arch_timer.h

@@ -1,5 +1,5 @@
 /****************************************************************************
- * arch/arm64/src/common/arm64_arch_timer.h
+ * arch/arm/src/armv8-r/arm_arch_timer.h
  *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with

arch/arm/src/fvp-v8r-aarch32/Kconfig

@@ -0,0 +1,22 @@
+#
+# For a description of the syntax of this configuration file,
+# see the file kconfig-language.txt in the NuttX tools repository.
+#
+
+if ARCH_CHIP_FVP_ARMV8R_AARCH32
+
+menu "FVP ARMv8-R Virt Chip Selection"
+
+choice
+	prompt "FVP Core Configuration"
+	default ARCH_CHIP_FVP_R52
+
+config ARCH_CHIP_FVP_R52
+	bool "FVP virtual Processor (Cortex-r52)"
+	select ARMV8R_HAVE_GICv3
+
+endchoice # FVP Chip Selection
+
+endmenu # "FVP Chip Selection"
+
+endif # ARCH_CHIP_FVP_ARMV8R_AARCH32

arch/arm/src/fvp-v8r-aarch32/Make.defs

@@ -0,0 +1,24 @@
+############################################################################
+# arch/arm/src/fvp-v8r/Make.defs
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you 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 armv8-r/Make.defs
+
+# fvp-specific C source files
+CHIP_CSRCS  = fvp_boot.c fvp_serial.c

arch/arm/src/fvp-v8r-aarch32/chip.h

@@ -0,0 +1,42 @@
+/****************************************************************************
+ * arch/arm/src/fvp-v8r-aarch32/chip.h
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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 __ARCH_ARM_SRC_FVP_V8R_CHIP_H
+#define __ARCH_ARM_SRC_FVP_V8R_CHIP_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#ifndef __ASSEMBLY__
+#  include <nuttx/arch.h>
+#endif
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Macro Definitions
+ ****************************************************************************/
+
+#endif /* __ARCH_ARM_SRC_FVP_V8R_CHIP_H */

arch/arm/src/fvp-v8r-aarch32/fvp_boot.c

@@ -0,0 +1,95 @@
+/****************************************************************************
+ * arch/arm/src/fvp-v8r-aarch32/fvp_boot.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <assert.h>
+#include <debug.h>
+
+#include <arch/chip/chip.h>
+
+#include "barriers.h"
+#include "cp15.h"
+#include "arm_gic.h"
+#include "chip.h"
+#include "fvp_boot.h"
+#include "serial_pl011.h"
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: arm_el_init
+ *
+ * Description:
+ *   The function called from arm_head.S at very early stage for these
+ * platform, it's use to:
+ *   - Handling special hardware initialize routine which is need to
+ *     run at high ELs
+ *   - Initialize system software such as hypervisor or security firmware
+ *     which is need to run at high ELs
+ *
+ ****************************************************************************/
+
+void arm_el_init(void)
+{
+  CP15_SET(CNTFRQ, CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC);
+  CP15_SET(ICC_HSRE, ICC_SRE_ELX_SRE_BIT | ICC_SRE_ELX_DFB_BIT |
+                     ICC_SRE_ELX_DIB_BIT | ICC_SRE_EL3_EN_BIT);
+
+  ARM_ISB();
+}
+
+/****************************************************************************
+ * Name: arm_boot
+ *
+ * Description:
+ *   Complete boot operations started in arm_head.S
+ *
+ ****************************************************************************/
+
+void arm_boot(void)
+{
+  /* MAP IO and DRAM, enable MPU. */
+
+  /* Perform board-specific device initialization. This would include
+   * configuration of board specific resources such as GPIOs, LEDs, etc.
+   */
+
+  fvp_board_initialize();
+
+#ifdef USE_EARLYSERIALINIT
+  /* Perform early serial initialization if we are going to use the serial
+   * driver.
+   */
+
+  arm_earlyserialinit();
+#endif
+}

arch/arm/src/fvp-v8r-aarch32/fvp_boot.h

@@ -0,0 +1,80 @@
+/****************************************************************************
+ * arch/arm/src/fvp-v8r-aarch32/fvp_boot.h
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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 __ARCH_ARM_SRC_FVP_V8R_FVP_BOOT_H
+#define __ARCH_ARM_SRC_FVP_V8R_FVP_BOOT_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/compiler.h>
+#include <sys/types.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <arch/chip/chip.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+#define CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC  100000000
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Name: fvp_board_initialize
+ *
+ * Description:
+ *   All fvp architectures must provide the following entry point.  This
+ *   entry point is called in the initialization phase -- after
+ *   imx_memory_initialize and after all memory has been configured and
+ *   mapped but before any devices have been initialized.
+ *
+ * Input Parameters:
+ *   None
+ *
+ * Returned Value:
+ *   None
+ *
+ ****************************************************************************/
+
+void fvp_board_initialize(void);
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __ARCH_ARM_SRC_FVP_V8R_FVP_BOOT_H */

arch/arm/src/fvp-v8r-aarch32/fvp_serial.c

@@ -0,0 +1,75 @@
+/***************************************************************************
+ * arch/arm/src/fvp-v8r-aarch32/fvp_serial.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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.
+ *
+ ***************************************************************************/
+
+/***************************************************************************
+ * Included Files
+ ***************************************************************************/
+
+#include <nuttx/config.h>
+#include <sys/types.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <unistd.h>
+#include <string.h>
+#include <assert.h>
+#include <errno.h>
+#include <debug.h>
+
+#include <nuttx/serial/uart_pl011.h>
+
+#include "arm_internal.h"
+
+#ifdef USE_SERIALDRIVER
+
+/***************************************************************************
+ * Public Functions
+ ***************************************************************************/
+
+/***************************************************************************
+ * Name: arm_earlyserialinit
+ *
+ * Description:
+ *   see arm_internal.h
+ *
+ ***************************************************************************/
+
+void arm_earlyserialinit(void)
+{
+  /* Enable the console UART.  The other UARTs will be initialized if and
+   * when they are first opened.
+   */
+
+  pl011_earlyserialinit();
+}
+
+/***************************************************************************
+ * Name: arm_serialinit
+ *
+ * Description:
+ *   see arm_internal.h
+ *
+ ***************************************************************************/
+
+void arm_serialinit(void)
+{
+  pl011_serialinit();
+}
+
+#endif /* USE_SERIALDRIVER */

arch/arm/src/fvp-v8r-aarch32/serial_pl011.h

@@ -0,0 +1,53 @@
+/****************************************************************************
+ * arch/arm/src/fvp-v8r-aarch32/serial_pl011.h
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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 __ARCH_ARM_SRC_FVP_V8R_SERIAL_PL011_H
+#define __ARCH_ARM_SRC_FVP_V8R_SERIAL_PL011_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Inline Functions
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#endif /* __ASSEMBLY__ */
+#endif /* __ARCH_ARM_SRC_FVP_V8R_SERIAL_PL011_H */

boards/Kconfig

@@ -1890,6 +1890,14 @@ config ARCH_BOARD_FVP_ARMV8R
 		This options selects support for NuttX on the Armv8-R AEM FVP
 		configure board with ARM Cortex-R82.
 
+config ARCH_BOARD_FVP_ARMV8R_AARCH32
+	bool "FVP ARM-v8r AARCH32 CPUs board"
+	depends on ARCH_CHIP_FVP_ARMV8R_AARCH32
+	select ARCH_HAVE_IRQBUTTONS
+	---help---
+		This options selects support for NuttX on the Armv8-R AEM FVP
+		configure board with ARM Cortex-R52.
+
 config ARCH_BOARD_SAMA5D2_XULT
 	bool "Atmel SAMA5D2 Xplained Ultra development board"
 	depends on ARCH_CHIP_ATSAMA5D27
@@ -3009,6 +3017,7 @@ config ARCH_BOARD
 	default "qemu-armv8a"               if ARCH_BOARD_QEMU_ARMV8A
 	default "pinephone"                 if ARCH_BOARD_PINEPHONE
 	default "fvp-armv8r"                if ARCH_BOARD_FVP_ARMV8R
+	default "fvp-armv8r-aarch32"        if ARCH_BOARD_FVP_ARMV8R_AARCH32
 	default "sama5d2-xult"              if ARCH_BOARD_SAMA5D2_XULT
 	default "giant-board"               if ARCH_BOARD_GIANT_BOARD
 	default "jupiter-nano"              if ARCH_BOARD_JUPITER_NANO
@@ -3207,6 +3216,9 @@ endif
 if ARCH_BOARD_FVP_ARMV8R
 source "boards/arm64/fvp-v8r/fvp-armv8r/Kconfig"
 endif
+if ARCH_BOARD_FVP_ARMV8R_AARCH32
+source "boards/arm/fvp-v8r-aarch32/fvp-armv8r-aarch32/Kconfig"
+endif
 if ARCH_BOARD_IMXRT1020_EVK
 source "boards/arm/imxrt/imxrt1020-evk/Kconfig"
 endif

boards/arm/fvp-v8r-aarch32/fvp-armv8r-aarch32/Kconfig

@@ -0,0 +1,7 @@
+#
+# For a description of the syntax of this configuration file,
+# see the file kconfig-language.txt in the NuttX tools repository.
+#
+
+if ARCH_BOARD_FVP_ARMV8R_AARCH32
+endif

boards/arm/fvp-v8r-aarch32/fvp-armv8r-aarch32/README.txt

@@ -0,0 +1,103 @@
+README.txt
+==========
+
+This board configuration will use FVP_BaseR_AEMv8R to emulate
+generic ARMv8-R (Cortex-R52) series hardware platform and
+provides support for these devices:
+
+ - GICv3 interrupt controllers for ARMv8-r
+ - PL011 UART controller(FVP)
+
+Contents
+========
+  - Getting Started
+  - Status
+  - Platform Features
+  - References
+
+Getting Started
+===============
+
+1. Compile Toolchain
+   I recommend to use the docker based CI image
+   <nuttx>/tools/ci/docker
+
+2. Getting Armv8-R AEM FVP
+   The Armv8-R AEM FVP is a free of charge Armv8-R Fixed Virtual Platform.
+   It supports the latest Armv8-R feature set. we can get it from:
+   https://developer.arm.com/downloads/-/arm-ecosystem-models
+
+   Please select to download Armv8-R AEM FVP product, extract the tool package
+   the FVP tool is locate at:
+   <path_to>/AEMv8R_FVP/AEMv8R_base_pkg/models/Linux64_GCC-9.3/FVP_BaseR_AEMv8R
+   Version 11.20 is tested fine.
+
+3. Configuring and building
+  3.1 FVP Overview
+     Just like QEMU, Fixed Virtual Platforms (FVP) are complete simulations of an Arm system,
+   including processor, memory and peripherals. These are set out in a "programmer's view",
+   which gives you a comprehensive model on which to build and test your software.
+
+     The FVP tools simulate 4 serial port and implement them to wait on local socket port:
+
+     $ <path_to>/AEMv8R_FVP/AEMv8R_base_pkg/models/Linux64_GCC-9.3/FVP_BaseR_AEMv8R \
+        -f boards/arm/fvp-v8r-aarch32/fvp-armv8r/scripts/fvp_cfg.txt -a ./nuttx
+      terminal_0: Listening for serial connection on port 5000
+      terminal_1: Listening for serial connection on port 5001
+      terminal_2: Listening for serial connection on port 5002
+      terminal_3: Listening for serial connection on port 5003
+
+     FVP has four UART port and I choice UART1 as tty, so just telnet to port 5001
+     will enter nsh:
+     telnet localhost 5001
+
+  3.2 Single Core
+   Configuring NuttX and compile:
+   $ ./tools/configure.sh -l fvp-armv8r-aarch32:nsh
+   $ make
+
+4. Running
+
+  4.1 Single Core
+
+  Step1: Booting NuttX
+
+  $ AEMv8R_FVP/AEMv8R_base_pkg/models/Linux64_GCC-9.3/FVP_BaseR_AEMv8R \
+           -f boards/arm/fvp-v8r-aarch32/fvp-armv8r-aarch32/scripts/fvp_cfg.txt \
+           -a ./nuttx
+    terminal_0: Listening for serial connection on port 5000
+    terminal_1: Listening for serial connection on port 5001
+    terminal_2: Listening for serial connection on port 5002
+    terminal_3: Listening for serial connection on port 5003
+
+  Step2: telnet to UART1
+  Starting another terminal and enter:
+  $ telnet localhost 5001
+    Trying 127.0.0.1...
+    Connected to localhost.
+    Escape character is '^]'.
+    nsh: mkfatfs: command not found
+    NuttShell (NSH) NuttX-12.1.0
+    nsh>
+
+
+Status
+======
+
+2023-5-31:
+1. Initial version for ARMv8-R AARCH32, Single Core, noMPU, noFPU, noCache using GCC Toolchain
+
+Platform Features
+=================
+
+The following hardware features are supported:
++--------------+------------+----------------------+
+| Interface    | Controller | Driver/Component     |
++==============+============+======================+
+| GICv3        | on-chip    | interrupt controller |
++--------------+------------+----------------------+
+| PL011 UART   | on-chip    | serial port          |
++--------------+------------+----------------------+
+| ARM TIMER    | on-chip    | system clock         |
++--------------+------------+----------------------+
+

boards/arm/fvp-v8r-aarch32/fvp-armv8r-aarch32/configs/nsh/defconfig

@@ -0,0 +1,80 @@
+#
+# This file is autogenerated: PLEASE DO NOT EDIT IT.
+#
+# You can use "make menuconfig" to make any modifications to the installed .config file.
+# You can then do "make savedefconfig" to generate a new defconfig file that includes your
+# modifications.
+#
+# CONFIG_DEBUG_OPT_UNUSED_SECTIONS is not set
+CONFIG_ARCH="arm"
+CONFIG_ARCH_BOARD="fvp-armv8r-aarch32"
+CONFIG_ARCH_BOARD_FVP_ARMV8R_AARCH32=y
+CONFIG_ARCH_CHIP="fvp-v8r-aarch32"
+CONFIG_ARCH_CHIP_FVP_ARMV8R_AARCH32=y
+CONFIG_ARCH_CHIP_FVP_R52=y
+CONFIG_ARCH_INTERRUPTSTACK=4096
+CONFIG_BUILTIN=y
+CONFIG_DEBUG_ASSERTIONS=y
+CONFIG_DEBUG_ERROR=y
+CONFIG_DEBUG_FEATURES=y
+CONFIG_DEBUG_INFO=y
+CONFIG_DEBUG_SCHED=y
+CONFIG_DEBUG_SCHED_ERROR=y
+CONFIG_DEBUG_SCHED_INFO=y
+CONFIG_DEBUG_SCHED_WARN=y
+CONFIG_DEBUG_SYMBOLS=y
+CONFIG_DEBUG_TCBINFO=y
+CONFIG_DEBUG_WARN=y
+CONFIG_DEFAULT_TASK_STACKSIZE=8192
+CONFIG_DEV_ZERO=y
+CONFIG_EXAMPLES_HELLO=y
+CONFIG_EXPERIMENTAL=y
+CONFIG_FS_PROCFS=y
+CONFIG_FS_PROCFS_REGISTER=y
+CONFIG_FS_ROMFS=y
+CONFIG_IDLETHREAD_STACKSIZE=8192
+CONFIG_INIT_ENTRYPOINT="nsh_main"
+CONFIG_INTELHEX_BINARY=y
+CONFIG_NSH_ARCHINIT=y
+CONFIG_NSH_BUILTIN_APPS=y
+CONFIG_NSH_FILEIOSIZE=512
+CONFIG_NSH_READLINE=y
+CONFIG_NSH_ROMFSETC=y
+CONFIG_PREALLOC_TIMERS=4
+CONFIG_PTHREAD_STACK_MIN=8192
+CONFIG_RAMLOG=y
+CONFIG_RAM_SIZE=134217728
+CONFIG_RAM_START=0x20000000
+CONFIG_RAW_BINARY=y
+CONFIG_READLINE_CMD_HISTORY=y
+CONFIG_RR_INTERVAL=200
+CONFIG_SCHED_HPWORK=y
+CONFIG_SCHED_HPWORKPRIORITY=192
+CONFIG_SPINLOCK=y
+CONFIG_STACK_COLORATION=y
+CONFIG_START_MONTH=3
+CONFIG_START_YEAR=2022
+CONFIG_SYMTAB_ORDEREDBYNAME=y
+CONFIG_SYSLOG_BUFFER=y
+CONFIG_SYSLOG_PROCESSID=y
+CONFIG_SYSLOG_PROCESS_NAME=y
+CONFIG_SYSTEM_NSH=y
+CONFIG_SYSTEM_SYSTEM=y
+CONFIG_SYSTEM_TIME64=y
+CONFIG_TESTING_GETPRIME=y
+CONFIG_TESTING_OSTEST=y
+CONFIG_UART0_BASE=0x9c090000
+CONFIG_UART0_IRQ=37
+CONFIG_UART0_PL011=y
+CONFIG_UART1_BASE=0x9c0a0000
+CONFIG_UART1_IRQ=38
+CONFIG_UART1_PL011=y
+CONFIG_UART1_SERIAL_CONSOLE=y
+CONFIG_UART2_BASE=0x9c0b0000
+CONFIG_UART2_IRQ=39
+CONFIG_UART2_PL011=y
+CONFIG_UART3_BASE=0x9c0c0000
+CONFIG_UART3_IRQ=40
+CONFIG_UART3_PL011=y
+CONFIG_UART_PL011=y
+CONFIG_USEC_PER_TICK=1000

boards/arm/fvp-v8r-aarch32/fvp-armv8r-aarch32/include/board.h

@@ -0,0 +1,34 @@
+/****************************************************************************
+ * boards/arm/fvp-v8r-aarch32/fvp-armv8r-aarch32/include/board.h
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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 __BOARDS_ARM_FVP_V8R_FVP_ARMV8R_INCLUDE_BOARD_H
+#define __BOARDS_ARM_FVP_V8R_FVP_ARMV8R_INCLUDE_BOARD_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#endif /* __BOARDS_ARM_FVP_V8R_FVP_ARMV8R_INCLUDE_BOARD_H */

boards/arm/fvp-v8r-aarch32/fvp-armv8r-aarch32/include/board_memorymap.h

@@ -0,0 +1,59 @@
+/****************************************************************************
+ * boards/arm/fvp-v8r-aarch32/fvp-armv8r-aarch32/include/board_memorymap.h
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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 __BOARDS_ARM_FVP_V8R_FVP_ARMV8R_INCLUDE_BOARD_MEMORYMAP_H
+#define __BOARDS_ARM_FVP_V8R_FVP_ARMV8R_INCLUDE_BOARD_MEMORYMAP_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __BOARDS_ARM_VDK_ARMV8R_BASE_INCLUDE_BOARD_MEMORYMAP_H */

boards/arm/fvp-v8r-aarch32/fvp-armv8r-aarch32/scripts/Make.defs

@@ -0,0 +1,48 @@
+############################################################################
+# boards/arm/fvp-v8r-aarch32/fvp-armv8r-aarch32/scripts/Make.defs
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you 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 $(TOPDIR)/.config
+include $(TOPDIR)/tools/Config.mk
+include $(TOPDIR)/arch/arm/src/armv8-r/Toolchain.defs
+
+LDSCRIPT = dramboot.ld
+
+ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
+
+CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS) -pipe
+CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
+CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS) -pipe
+CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
+CPPFLAGS := $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
+AFLAGS := $(CFLAGS) -D__ASSEMBLY__
+
+# NXFLAT module definitions
+
+NXFLATLDFLAGS1 = -r -d -warn-common
+NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) -T$(TOPDIR)$(DELIM)binfmt$(DELIM)libnxflat$(DELIM)gnu-nxflat-pcrel.ld -no-check-sections
+LDNXFLATFLAGS = -e main -s 2048
+
+# ELF module definitions
+
+CELFFLAGS = $(CFLAGS) -mlong-calls # --target1-abs
+CXXELFFLAGS = $(CXXFLAGS) -mlong-calls # --target1-abs
+
+LDELFFLAGS = -r -e main
+LDELFFLAGS += -T $(call CONVERT_PATH,$(TOPDIR)/binfmt/libelf/gnu-elf.ld)

boards/arm/fvp-v8r-aarch32/fvp-armv8r-aarch32/scripts/dramboot.ld

@@ -0,0 +1,115 @@
+/****************************************************************************
+ * boards/arm/fvp-v8r-aarch32/fvp-armv8r-aarch32/scripts/dramboot.ld
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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.
+ *
+ ****************************************************************************/
+
+OUTPUT_ARCH(arm)
+
+MEMORY
+{
+    FLASH (RX): ORIGIN = 0x00000000, LENGTH = 64M
+    RAM  (RWX): ORIGIN = 0x20000000, LENGTH = 64M
+}
+
+ENTRY(__start)
+
+SECTIONS
+{
+    .text :
+    {
+        _stext = ABSOLUTE(.);
+        KEEP(*(.hyp_vectors))
+        . = ALIGN(32);
+        KEEP(*(.sys_vectors))
+        *(.text .text.*)
+        *(.fixup)
+        *(.gnu.warning)
+        *(.rodata .rodata.*)
+        *(.gnu.linkonce.t.*)
+        *(.glue_7)
+        *(.glue_7t)
+        *(.got)
+        *(.gcc_except_table)
+        *(.gnu.linkonce.r.*)
+        *(.ARM.extab*)
+        *(.gnu.linkonce.armextab.*)
+        _etext = ABSOLUTE(.);
+    } > FLASH
+
+    .init_section :
+    {
+        _sinit = ABSOLUTE(.);
+        *(.init_array .init_array.*)
+        _einit = ABSOLUTE(.);
+    } > FLASH
+
+    .ARM.extab :
+    {
+        *(.ARM.extab*)
+    } > FLASH
+
+    /* .ARM.exidx is sorted, so has to go in its own output section.  */
+
+    PROVIDE_HIDDEN (__exidx_start = .);
+    .ARM.exidx :
+    {
+        *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+    } > FLASH
+    PROVIDE_HIDDEN (__exidx_end = .);
+
+    _eronly = ABSOLUTE(.);
+
+    .data :
+    {
+        _sdata = ABSOLUTE(.);
+        *(.data .data.*)
+        *(.gnu.linkonce.d.*)
+        CONSTRUCTORS
+        . = ALIGN(4);
+        _edata = ABSOLUTE(.);
+    } > RAM AT > FLASH
+
+    .bss :
+    {
+        _sbss = ABSOLUTE(.);
+        *(.bss .bss.*)
+        *(.gnu.linkonce.b.*)
+        *(COMMON)
+        . = ALIGN(4);
+        _ebss = ABSOLUTE(.);
+    } > RAM
+
+    /* Uninitialized data */
+
+    .noinit :
+    {
+        _snoinit = ABSOLUTE(.);
+        *(.noinit*)
+        _enoinit = ABSOLUTE(.);
+    } > RAM
+
+    /* Stabs debugging sections. */
+
+    .stab 0 : { *(.stab) }
+    .stabstr 0 : { *(.stabstr) }
+    .stab.excl 0 : { *(.stab.excl) }
+    .stab.exclstr 0 : { *(.stab.exclstr) }
+    .stab.index 0 : { *(.stab.index) }
+    .stab.indexstr 0 : { *(.stab.indexstr) }
+    .comment 0 : { *(.comment) }
+}

boards/arm/fvp-v8r-aarch32/fvp-armv8r-aarch32/scripts/fvp_cfg.txt

@@ -0,0 +1,21 @@
+cluster0.has_aarch64=0
+cluster0.VMSA_supported=0
+cluster0.NUM_CORES=1
+gic_distributor.GICD_CTLR-DS-1-means-secure-only=1
+gic_distributor.has-two-security-states=0
+bp.refcounter.non_arch_start_at_default=1
+bp.pl011_uart0.out_file=-
+bp.pl011_uart0.unbuffered_output=1
+bp.terminal_0.start_telnet=0
+bp.pl011_uart1.out_file=-
+bp.pl011_uart1.unbuffered_output=1
+bp.terminal_1.start_telnet=0
+bp.pl011_uart2.out_file=-
+bp.pl011_uart2.unbuffered_output=1
+bp.terminal_2.start_telnet=0
+bp.pl011_uart3.out_file=-
+bp.pl011_uart3.unbuffered_output=1
+bp.terminal_3.start_telnet=0
+bp.vis.disable_visualisation=1
+bp.vis.rate_limit-enable=0
+cache_state_modelled=0

boards/arm/fvp-v8r-aarch32/fvp-armv8r-aarch32/src/Makefile

@@ -0,0 +1,29 @@
+############################################################################
+# boards/arm/fvp-v8r-aarch32/fvp-armv8r-aarch32/src/Makefile
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you 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 $(TOPDIR)/Make.defs
+
+CSRCS = fvp_boardinit.c fvp_bringup.c
+
+ifeq ($(CONFIG_BOARDCTL),y)
+CSRCS += fvp_appinit.c
+endif
+
+include $(TOPDIR)/boards/Board.mk

boards/arm/fvp-v8r-aarch32/fvp-armv8r-aarch32/src/fvp-armv8r.h

@@ -0,0 +1,59 @@
+/****************************************************************************
+ * boards/arm/fvp-v8r-aarch32/fvp-armv8r-aarch32/src/fvp-armv8r.h
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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 __BOARDS_ARM_VDK_ARMV8R_BASE_SRC_VDK_ARMV8R_H__
+#define __BOARDS_ARM_VDK_ARMV8R_BASE_SRC_VDK_ARMV8R_H__
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+/****************************************************************************
+ * Public Functions Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: vdk_bringup
+ *
+ * Description:
+ *   Bring up board features
+ *
+ ****************************************************************************/
+
+#if defined(CONFIG_BOARDCTL) || defined(CONFIG_BOARD_LATE_INITIALIZE)
+int fvp_bringup(void);
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __BOARDS_ARM_VDK_ARMV8R_BASE_SRC_VDK_ARMV8R_H__ */

boards/arm/fvp-v8r-aarch32/fvp-armv8r-aarch32/src/fvp_appinit.c

@@ -0,0 +1,73 @@
+/****************************************************************************
+ * boards/arm/fvp-v8r-aarch32/fvp-armv8r-aarch32/src/fvp_appinit.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <sys/types.h>
+#include <nuttx/board.h>
+#include "fvp-armv8r.h"
+
+#ifdef CONFIG_BOARDCTL
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: board_app_initialize
+ *
+ * Description:
+ *   Perform application specific initialization.  This function is never
+ *   called directly from application code, but only indirectly via the
+ *   (non-standard) boardctl() interface using the command BOARDIOC_INIT.
+ *
+ * Input Parameters:
+ *   arg - The boardctl() argument is passed to the board_app_initialize()
+ *         implementation without modification.  The argument has no
+ *         meaning to NuttX; the meaning of the argument is a contract
+ *         between the board-specific initialization logic and the
+ *         matching application logic.  The value could be such things as a
+ *         mode enumeration value, a set of DIP switch switch settings, a
+ *         pointer to configuration data read from a file or serial FLASH,
+ *         or whatever you would like to do with it.  Every implementation
+ *         should accept zero/NULL as a default configuration.
+ *
+ * Returned Value:
+ *   Zero (OK) is returned on success; a negated errno value is returned on
+ *   any failure to indicate the nature of the failure.
+ *
+ ****************************************************************************/
+
+int board_app_initialize(uintptr_t arg)
+{
+  UNUSED(arg);
+#ifndef CONFIG_BOARD_LATE_INITIALIZE
+  /* Perform board initialization */
+
+  return fvp_bringup();
+#else
+  return OK;
+#endif
+}
+
+#endif /* CONFIG_BOARDCTL */

boards/arm/fvp-v8r-aarch32/fvp-armv8r-aarch32/src/fvp_boardinit.c

@@ -0,0 +1,113 @@
+/****************************************************************************
+ * boards/arm/fvp-v8r-aarch32/fvp-armv8r-aarch32/src/fvp_boardinit.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <stdint.h>
+#include <nuttx/board.h>
+#include "fvp-armv8r.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: fvp_memory_initialize
+ *
+ * Description:
+ *   All vdk architectures must provide the following entry point.  This
+ *   entry point is called early in the initialization before memory has
+ *   been configured.  This board-specific function is responsible for
+ *   configuring any on-board memories.
+ *
+ *   Logic in vdk_memory_initialize must be careful to avoid using any
+ *   global variables because those will be uninitialized at the time this
+ *   function is called.
+ *
+ * Input Parameters:
+ *   None
+ *
+ * Returned Value:
+ *   None
+ *
+ ****************************************************************************/
+
+void fvp_memory_initialize(void)
+{
+  /* SDRAM was initialized by a bootloader in the supported configurations. */
+}
+
+/****************************************************************************
+ * Name: vdk_board_initialize
+ *
+ * Description:
+ *   All vdk architectures must provide the following entry point.  This
+ *   entry point is called in the initialization phase -- after
+ *   vdk_memory_initialize and after all memory has been configured and
+ *   mapped but before any devices have been initialized.
+ *
+ * Input Parameters:
+ *   None
+ *
+ * Returned Value:
+ *   None
+ *
+ ****************************************************************************/
+
+void fvp_board_initialize(void)
+{
+#ifdef CONFIG_ARCH_LEDS
+  /* Configure on-board LEDs if LED support has been selected. */
+
+#endif
+}
+
+/****************************************************************************
+ * Name: board_late_initialize
+ *
+ * Description:
+ *   If CONFIG_BOARD_LATE_INITIALIZE is selected, then an additional
+ *   initialization call will be performed in the boot-up sequence to a
+ *   function called board_late_initialize(). board_late_initialize() will be
+ *   called immediately after up_intitialize() is called and just before the
+ *   initial application is started.  This additional initialization phase
+ *   may be used, for example, to initialize board-specific device drivers.
+ *
+ ****************************************************************************/
+
+#ifdef CONFIG_BOARD_LATE_INITIALIZE
+void board_late_initialize(void)
+{
+  /* Perform board initialization */
+
+  fvp_bringup();
+}
+#endif /* CONFIG_BOARD_LATE_INITIALIZE */

boards/arm/fvp-v8r-aarch32/fvp-armv8r-aarch32/src/fvp_bringup.c

@@ -0,0 +1,60 @@
+/****************************************************************************
+ * boards/arm/fvp-v8r-aarch32/fvp-armv8r-aarch32/src/fvp_bringup.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <sys/types.h>
+#include <syslog.h>
+#include <nuttx/fs/fs.h>
+
+#include "fvp-armv8r.h"
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: fvp_bringup
+ *
+ * Description:
+ *   Bring up board features
+ *
+ ****************************************************************************/
+
+int fvp_bringup(void)
+{
+  int ret;
+
+#ifdef CONFIG_FS_PROCFS
+  /* Mount the procfs file system */
+
+  ret = nx_mount(NULL, "/proc", "procfs", 0, NULL);
+  if (ret < 0)
+    {
+      syslog(LOG_ERR, "ERROR: Failed to mount procfs at /proc: %d\n", ret);
+    }
+#endif
+
+  UNUSED(ret);
+  return OK;
+}