Add initial support for Nordic nRF54L15

This adds initial support for Nordic nRF54L15.
GPIO, timers and UART is implemented.

Support for GRTC is still to be added.

hw/bsp/nordic_pca10156/boot-nrf54.ld

@@ -0,0 +1,26 @@
+/*
+ * 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.
+ */
+MEMORY
+{
+  FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 0x8000
+  RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x40000
+}
+
+/* The bootloader does not contain an image header */
+_imghdr_size = 0x0;

hw/bsp/nordic_pca10156/bsp.yml

@@ -0,0 +1,59 @@
+#
+# 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.
+#
+
+bsp.name: "nRF54L15 PDK"
+bsp.url:
+bsp.maker: "Nordic Semiconductor"
+bsp.arch: cortex_m33
+bsp.compiler: "@apache-mynewt-core/compiler/arm-none-eabi-m33"
+bsp.linkerscript: autogenerated
+bsp.downloadscript: "hw/scripts/download.sh"
+bsp.debugscript: "hw/bsp/nordic_pca10156/nordic_pca10156_debug.sh"
+
+bsp.flash_map:
+    areas:
+        # System areas.
+        FLASH_AREA_BOOTLOADER:
+            device: 0
+            offset: 0x00000000
+            size: 32kB
+        FLASH_AREA_IMAGE_0:
+            device: 0
+            offset: 0x0000c000
+            size: 722kB
+        FLASH_AREA_IMAGE_1:
+            device: 0
+            offset: 0x000C0800
+            size: 722kB
+        FLASH_AREA_IMAGE_SCRATCH:
+            device: 0
+            offset: 0x00175000
+            size: 16kB
+
+        # User areas.
+        FLASH_AREA_REBOOT_LOG:
+            user_id: 0
+            device: 0
+            offset: 0x00008000
+            size: 16kB
+        FLASH_AREA_NFFS:
+            user_id: 1
+            device: 0
+            offset: 0x00179000
+            size: 16kB

hw/bsp/nordic_pca10156/include/bsp/bsp.h

@@ -0,0 +1,57 @@
+/*
+ * 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 _BSP_H_
+#define _BSP_H_
+
+#include <inttypes.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Define special stackos sections */
+#define sec_data_core   __attribute__((section(".data.core")))
+#define sec_bss_core    __attribute__((section(".bss.core")))
+#define sec_bss_nz_core __attribute__((section(".bss.core.nz")))
+
+/* More convenient section placement macros. */
+#define bssnz_t         sec_bss_nz_core
+
+extern uint8_t _ram_start;
+#define RAM_SIZE        0x40000
+
+/* LED pins */
+#define LED_1           (73)
+#define LED_2           (42)
+#define LED_3           (71)
+#define LED_4           (46)
+#define LED_BLINK_PIN   (LED_1)
+
+/* Buttons */
+#define BUTTON_1        (45)
+#define BUTTON_2        (41)
+#define BUTTON_3        (40)
+#define BUTTON_4        (4)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _BSP_H_ */

hw/bsp/nordic_pca10156/nordic_pca10156_debug.sh

@@ -0,0 +1,37 @@
+#!/bin/sh
+# 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.
+#
+
+# Called with following variables set:
+#  - CORE_PATH is absolute path to @apache-mynewt-core
+#  - BSP_PATH is absolute path to hw/bsp/bsp_name
+#  - BIN_BASENAME is the path to prefix to target binary,
+#    .elf appended to name is the ELF file
+#  - FEATURES holds the target features string
+#  - EXTRA_JTAG_CMD holds extra parameters to pass to jtag software
+#  - RESET set if target should be reset when attaching
+#  - NO_GDB set if we should not start gdb to debug
+#
+
+. $CORE_PATH/hw/scripts/jlink.sh
+
+FILE_NAME=$BIN_BASENAME.elf
+JLINK_DEV="Cortex-M33"
+
+jlink_debug
+

hw/bsp/nordic_pca10156/nrf54.ld

@@ -0,0 +1,26 @@
+/*
+ * 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.
+ */
+MEMORY
+{
+  FLASH (rx) : ORIGIN = 0x00008000, LENGTH = 0x171000
+  RAM (rwx) : ORIGIN = 0x20000000, LENGTH = 0x40000
+}
+
+/* This linker script is used for images and thus contains an image header */
+_imghdr_size = 0x20;

hw/bsp/nordic_pca10156/pkg.yml

@@ -0,0 +1,45 @@
+#
+# 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.
+#
+
+pkg.name: hw/bsp/nordic_pca10156
+pkg.type: bsp
+pkg.description: BSP definition for the Nordic PCA10156 (nRF54L15-PDK)
+pkg.author: "Apache Mynewt <dev@mynewt.apache.org>"
+pkg.homepage: "http://mynewt.apache.org/"
+pkg.keywords:
+    - nrf54
+    - nordic
+    - pca10156
+
+pkg.cflags:
+    - '-DNRF54L15_XXAA'
+    - '-DNRF_APPLICATION'
+
+pkg.cflags.HARDFLOAT:
+    - -mfloat-abi=hard -mfpu=fpv4-sp-d16
+
+pkg.deps:
+    - "@apache-mynewt-core/hw/scripts"
+    - "@apache-mynewt-core/hw/mcu/nordic/nrf54lxx"
+    - "@apache-mynewt-core/libc/baselibc"
+    - "@apache-mynewt-core/sys/flash_map"
+    - "@apache-mynewt-core/boot/startup"
+
+pkg.deps.SOFT_PWM:
+    - "@apache-mynewt-core/hw/drivers/pwm/soft_pwm"

hw/bsp/nordic_pca10156/src/hal_bsp.c

@@ -0,0 +1,82 @@
+/*
+ * 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 <stdint.h>
+#include <stddef.h>
+#include <assert.h>
+#include <os/mynewt.h>
+#include <nrfx.h>
+#include <flash_map/flash_map.h>
+#include <hal/hal_bsp.h>
+#include <hal/hal_flash.h>
+#include <hal/hal_system.h>
+#include <mcu/nrf54l_hal.h>
+#include <mcu/nrf54l_periph.h>
+#include <bsp/bsp.h>
+
+/*
+ * What memory to include in coredump.
+ */
+static const struct hal_bsp_mem_dump dump_cfg[] = {
+    [0] = {
+        .hbmd_start = &_ram_start,
+        .hbmd_size = RAM_SIZE
+    }
+};
+
+const struct hal_flash *
+hal_bsp_flash_dev(uint8_t id)
+{
+    /*
+     * Internal flash mapped to id 0.
+     */
+    if (id == 0) {
+        return &nrf54l_flash_dev;
+    }
+
+    return NULL;
+}
+
+const struct hal_bsp_mem_dump *
+hal_bsp_core_dump(int *area_cnt)
+{
+    *area_cnt = sizeof(dump_cfg) / sizeof(dump_cfg[0]);
+    return dump_cfg;
+}
+
+int
+hal_bsp_power_state(int state)
+{
+    return 0;
+}
+
+void
+hal_bsp_init(void)
+{
+    /* Make sure system clocks have started */
+    hal_system_clock_start();
+
+    /* Create all available nRF54 peripherals */
+    nrf54l_periph_create();
+}
+
+void
+hal_bsp_deinit(void)
+{
+}

hw/bsp/nordic_pca10156/src/sbrk.c

@@ -0,0 +1,60 @@
+/*
+ * 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 <hal/hal_bsp.h>
+
+/* put these in the data section so they are not cleared by _start */
+static char *sbrkBase __attribute__ ((section (".data")));
+static char *sbrkLimit __attribute__ ((section (".data")));
+static char *brk __attribute__ ((section (".data")));
+
+void
+_sbrkInit(char *base, char *limit)
+{
+    sbrkBase = base;
+    sbrkLimit = limit;
+    brk = base;
+}
+
+void *
+_sbrk(int incr)
+{
+    void *prev_brk;
+
+    if (incr < 0) {
+        /* Returning memory to the heap. */
+        incr = -incr;
+        if (brk - incr < sbrkBase) {
+            prev_brk = (void *)-1;
+        } else {
+            prev_brk = brk;
+            brk -= incr;
+        }
+    } else {
+        /* Allocating memory from the heap. */
+        if (sbrkLimit - brk >= incr) {
+            prev_brk = brk;
+            brk += incr;
+        } else {
+            prev_brk = (void *)-1;
+        }
+    }
+
+    return prev_brk;
+}