Support for NXP S32K14XX

.github/workflows/test-configs.yml

@@ -216,6 +216,12 @@ jobs:
       arch: arm
       config-file: ./config/examples/mcxw-tz.config
 
+  nxp_s32k142_test:
+    uses: ./.github/workflows/test-build.yml
+    with:
+      arch: arm
+      config-file: ./config/examples/nxp-s32k142.config
+
   microchip_mpfs250_test:
     uses: ./.github/workflows/test-build-riscv.yml
     with:

.vscode/arm-gdb-wrapper.sh

@@ -0,0 +1,6 @@
+#!/bin/bash
+# Wrapper script for arm-none-eabi-gdb that skips .gdbinit
+# This is needed because cortex-debug doesn't support passing --nx to GDB
+
+exec /opt/arm-gnu-toolchain-14.3.rel1-x86_64-arm-none-eabi/bin/arm-none-eabi-gdb --nx "$@"
+

.vscode/launch.json

@@ -0,0 +1,96 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Flash and Debug wolfBoot",
+            "type": "cortex-debug",
+            "request": "launch",
+            "cwd": "${workspaceFolder}",
+            "executable": "${workspaceFolder}/wolfboot.elf",
+            "servertype": "external",
+            "gdbTarget": "127.0.0.1:7224",
+            "device": "S32K142",
+            "runToEntryPoint": "main",
+            "showDevDebugOutput": "raw",
+            "svdFile": "",
+            "gdbPath": "${workspaceFolder}/.vscode/arm-gdb-wrapper.sh",
+            "toolchainPath": "/opt/arm-gnu-toolchain-14.3.rel1-x86_64-arm-none-eabi/bin",
+            "toolchainPrefix": "arm-none-eabi",
+            "preLaunchTask": "Start PEMicro GDB Server",
+            "preLaunchCommands": [
+                "set mem inaccessible-by-default off"
+            ],
+            "postLaunchCommands": [
+                "monitor reset halt",
+                "load",
+                "monitor programbin test-app/image_v1_signed.bin 0xc000"
+            ]
+        },
+        {
+            "name": "Flash and Debug wolfBoot (with UART)",
+            "type": "cortex-debug",
+            "request": "launch",
+            "cwd": "${workspaceFolder}",
+            "executable": "${workspaceFolder}/wolfboot.elf",
+            "servertype": "external",
+            "gdbTarget": "127.0.0.1:7224",
+            "device": "S32K142",
+            "runToEntryPoint": "main",
+            "showDevDebugOutput": "raw",
+            "svdFile": "",
+            "gdbPath": "${workspaceFolder}/.vscode/arm-gdb-wrapper.sh",
+            "toolchainPath": "/opt/arm-gnu-toolchain-14.3.rel1-x86_64-arm-none-eabi/bin",
+            "toolchainPrefix": "arm-none-eabi",
+            "preLaunchTask": "Start GDB Server and UART",
+            "preLaunchCommands": [
+                "set mem inaccessible-by-default off"
+            ],
+            "postLaunchCommands": [
+                "monitor reset halt",
+                "load",
+                "monitor programbin test-app/image_v1_signed.bin 0xc000"
+            ]
+        },
+        {
+            "name": "Flash Only wolfBoot",
+            "type": "cortex-debug",
+            "request": "launch",
+            "cwd": "${workspaceFolder}",
+            "executable": "${workspaceFolder}/wolfboot.elf",
+            "servertype": "external",
+            "gdbTarget": "127.0.0.1:7224",
+            "device": "S32K142",
+            "showDevDebugOutput": "raw",
+            "svdFile": "",
+            "gdbPath": "${workspaceFolder}/.vscode/arm-gdb-wrapper.sh",
+            "toolchainPath": "/opt/arm-gnu-toolchain-14.3.rel1-x86_64-arm-none-eabi/bin",
+            "toolchainPrefix": "arm-none-eabi",
+            "preLaunchTask": "Start PEMicro GDB Server",
+            "preLaunchCommands": [
+                "set mem inaccessible-by-default off"
+            ],
+            "postLaunchCommands": [
+                "monitor reset halt",
+                "load",
+                "monitor reset run",
+                "quit"
+            ]
+        },
+        {
+            "name": "Attach Only wolfBoot",
+            "type": "cortex-debug",
+            "request": "attach",
+            "cwd": "${workspaceFolder}",
+            "executable": "${workspaceFolder}/wolfboot.elf",
+            "servertype": "external",
+            "gdbTarget": "127.0.0.1:7224",
+            "device": "S32K142",
+            "showDevDebugOutput": "raw",
+            "svdFile": "",
+            "gdbPath": "${workspaceFolder}/.vscode/arm-gdb-wrapper.sh",
+            "toolchainPath": "/opt/arm-gnu-toolchain-14.3.rel1-x86_64-arm-none-eabi/bin",
+            "toolchainPrefix": "arm-none-eabi",
+            "preLaunchTask": "Start PEMicro GDB Server"
+        }
+    ]
+}

.vscode/settings.json

@@ -0,0 +1,5 @@
+{
+    "cortex-debug.gdbPath": "${workspaceFolder}/.vscode/arm-gdb-wrapper.sh",
+    "cortex-debug.armToolchainPath": "/opt/arm-gnu-toolchain-14.3.rel1-x86_64-arm-none-eabi/bin",
+    "cortex-debug.showDevDebugOutput": "raw"
+}

.vscode/start-pemicro-gdb.sh

@@ -0,0 +1,42 @@
+#!/bin/bash
+# Start PEMicro GDB Server for S32K142 debugging
+#
+# Usage: ./start-pemicro-gdb.sh [options]
+#
+# Options are passed directly to pegdbserver_console
+
+PEMICRO_DIR="$HOME/.local/pemicro"
+DEVICE="NXP_S32K1xx_S32K142F256M15"
+INTERFACE="OPENSDA"
+PORT="USB1"
+SERVER_PORT="7224"
+SPEED="5000"
+
+# Set library path
+export LD_LIBRARY_PATH="$PEMICRO_DIR/gdi:$PEMICRO_DIR/gdi/P&E:$LD_LIBRARY_PATH"
+
+cd "$PEMICRO_DIR"
+
+# Check if server is already running
+if pgrep -f pegdbserver_console > /dev/null; then
+    echo "PEMicro GDB Server is already running. Stopping it first..."
+    pkill -f pegdbserver_console
+    sleep 1
+fi
+
+echo "Starting PEMicro GDB Server..."
+echo "  Device: $DEVICE"
+echo "  Interface: $INTERFACE"
+echo "  Port: $PORT"
+echo "  Server Port: $SERVER_PORT"
+echo ""
+
+./pegdbserver_console \
+    -startserver \
+    -device=$DEVICE \
+    -interface=$INTERFACE \
+    -port=$PORT \
+    -serverport=$SERVER_PORT \
+    -speed=$SPEED \
+    "$@"
+

.vscode/tasks.json

@@ -0,0 +1,124 @@
+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "Start PEMicro GDB Server",
+            "type": "shell",
+            "command": "${env:HOME}/.local/pemicro/pegdbserver_console",
+            "args": [
+                "-startserver",
+                "-device=NXP_S32K1xx_S32K142F256M15",
+                "-interface=OPENSDA",
+                "-port=USB1",
+                "-serverport=7224",
+                "-speed=5000"
+            ],
+            "options": {
+                "env": {
+                    "LD_LIBRARY_PATH": "${env:HOME}/.local/pemicro/gdi:${env:HOME}/.local/pemicro/gdi/P&E:${env:LD_LIBRARY_PATH}"
+                },
+                "cwd": "${env:HOME}/.local/pemicro"
+            },
+            "isBackground": true,
+            "problemMatcher": {
+                "pattern": {
+                    "regexp": "^ERROR:(.*)$",
+                    "message": 1
+                },
+                "background": {
+                    "activeOnStart": true,
+                    "beginsPattern": "^P&E GDB Server",
+                    "endsPattern": "^All Servers Running"
+                }
+            },
+            "presentation": {
+                "echo": true,
+                "reveal": "always",
+                "focus": false,
+                "panel": "dedicated",
+                "showReuseMessage": false,
+                "clear": true
+            }
+        },
+        {
+            "label": "Start UART Monitor",
+            "type": "shell",
+            "command": "echo 'UART Monitor Started' && stty -F /dev/ttyACM0 115200 raw -echo && cat /dev/ttyACM0",
+            "isBackground": true,
+            "problemMatcher": {
+                "pattern": {
+                    "regexp": "^ERROR:(.*)$",
+                    "message": 1
+                },
+                "background": {
+                    "activeOnStart": true,
+                    "beginsPattern": "^UART Monitor",
+                    "endsPattern": "^UART Monitor Started"
+                }
+            },
+            "presentation": {
+                "echo": true,
+                "reveal": "always",
+                "focus": false,
+                "panel": "dedicated",
+                "showReuseMessage": false,
+                "clear": true
+            }
+        },
+        {
+            "label": "Start GDB Server and UART",
+            "dependsOn": [
+                "Start PEMicro GDB Server",
+                "Start UART Monitor"
+            ],
+            "dependsOrder": "parallel",
+            "problemMatcher": []
+        },
+        {
+            "label": "Stop PEMicro GDB Server",
+            "type": "shell",
+            "command": "pkill",
+            "args": ["-f", "pegdbserver_console"],
+            "problemMatcher": []
+        },
+        {
+            "label": "Stop UART Monitor",
+            "type": "shell",
+            "command": "pkill",
+            "args": ["-f", "cat /dev/ttyACM0"],
+            "problemMatcher": []
+        },
+        {
+            "label": "Stop GDB Server and UART",
+            "dependsOn": [
+                "Stop PEMicro GDB Server",
+                "Stop UART Monitor"
+            ],
+            "dependsOrder": "parallel",
+            "problemMatcher": []
+        },
+        {
+            "label": "Build wolfBoot",
+            "type": "shell",
+            "command": "make",
+            "args": [],
+            "group": {
+                "kind": "build",
+                "isDefault": true
+            },
+            "problemMatcher": ["$gcc"],
+            "presentation": {
+                "reveal": "always",
+                "panel": "shared"
+            }
+        },
+        {
+            "label": "Clean wolfBoot",
+            "type": "shell",
+            "command": "make",
+            "args": ["clean"],
+            "problemMatcher": []
+        }
+    ]
+}
+

arch.mk

@@ -623,6 +623,14 @@ ifeq ($(ARCH),PPC)
   endif
 endif
 
+# NXP S32K1xx (S32K142, S32K144, S32K146, S32K148)
+# Bare-metal implementation, no SDK required
+ifeq ($(TARGET),s32k1xx)
+  ARCH_FLASH_OFFSET=0x00000000
+  CFLAGS+=-DCPU_S32K142
+  # S32K1xx is Cortex-M4 by default (handled by default case in arch.mk)
+endif
+
 ifeq ($(TARGET),kinetis)
   CFLAGS+=\
       -I$(MCUXPRESSO_DRIVERS) \

config/examples/nxp-s32k142.config

@@ -0,0 +1,52 @@
+# wolfBoot configuration for NXP S32K142
+#
+# S32K142: Cortex-M4F, 256KB Flash, 32KB SRAM
+# Flash sector size: 2KB
+# Default: RUN mode at 48 MHz (FIRC - internal RC oscillator)
+#
+# Build: cp config/examples/nxp-s32k142.config .config && make
+
+ARCH?=ARM
+CORTEX_M4?=1
+TARGET?=s32k1xx
+SIGN?=ECC256
+HASH?=SHA256
+DEBUG?=0
+VTOR?=1
+NO_ASM?=0
+EXT_FLASH?=0
+SPI_FLASH?=0
+ALLOW_DOWNGRADE?=0
+NVM_FLASH_WRITEONCE?=0
+WOLFBOOT_VERSION?=0
+V?=0
+SPMATH?=1
+RAM_CODE?=0
+DUALBANK_SWAP?=0
+
+# Disable MPU (S32K1xx MPU configuration needs customization)
+WOLFBOOT_NO_MPU?=1
+
+# Enable hardfault debugging
+DEBUG_HARDFAULT?=1
+
+# Debug UART on LPUART1 (PTC6=RX, PTC7=TX)
+DEBUG_UART?=1
+
+# 2KB sectors
+WOLFBOOT_SECTOR_SIZE?=0x800
+
+# Memory layout for S32K142 (256KB Flash):
+#   Bootloader:       0x00000000 - 0x0000BFFF (48 KB)
+#   Boot Partition:   0x0000C000 - 0x00024FFF (100 KB)
+#   Update Partition: 0x00025000 - 0x0003DFFF (100 KB)
+#   Swap Sector:      0x0003E000 - 0x0003E7FF (2 KB)
+WOLFBOOT_PARTITION_SIZE?=0x19000
+WOLFBOOT_PARTITION_BOOT_ADDRESS?=0xC000
+WOLFBOOT_PARTITION_UPDATE_ADDRESS?=0x25000
+WOLFBOOT_PARTITION_SWAP_ADDRESS?=0x3E000
+
+# Clock mode: Default is RUN mode with FIRC (48 MHz internal RC)
+# To enable HSRUN mode (112 MHz), uncomment below (requires SOSC + SPLL, not fully implemented):
+#CFLAGS_EXTRA+=-DS32K1XX_CLOCK_HSRUN
+