hw/bsp: Add arduino_zero bsp

hw/bsp/arduino_zero/arduino_zero.cfg

@@ -0,0 +1,35 @@
+# 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 $0 <binary> [identities ...]
+#  - binary is the path to prefix to target binary, .elf appended to name is
+#    the ELF file
+#  - identities is the project identities string.
+#
+#
+source [find interface/cmsis-dap.cfg]
+
+# chip name
+set CHIPNAME at91samd21g18
+set ENDIAN little
+set _TARGETNAME $CHIPNAME.cpu
+
+source [find target/at91samdXX.cfg]
+
+$_TARGETNAME configure -event gdb-detach {if {[at91samd21g18.cpu curstate] eq "halted"} resume;shutdown}
+
+

hw/bsp/arduino_zero/arduino_zero.ld

@@ -0,0 +1,30 @@
+/*
+ * 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.
+ */
+
+/* Linker script for SAMD21 when running from flash and using the bootloader */
+
+/* Memory Spaces Definitions */
+MEMORY
+{
+  FLASH    (rx)  : ORIGIN = 0x0000c000, LENGTH = 0x18000
+  RAM      (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00008000
+}
+
+/* This linker script is used for images and thus contains an image header */
+_imghdr_size = 0x20;

hw/bsp/arduino_zero/arduino_zero_boot.ld

@@ -0,0 +1,28 @@
+/*
+ * 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 Spaces Definitions */
+MEMORY
+{
+  FLASH    (rx)  : ORIGIN = 0x00000000, LENGTH = 0x0000c000
+  RAM      (rwx) : ORIGIN = 0x20000000, LENGTH = 0x00008000
+}
+
+/* The bootloader does not contain an image header */
+_imghdr_size = 0x0;

hw/bsp/arduino_zero/arduino_zero_debug.sh

@@ -0,0 +1,39 @@
+#!/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
+#
+
+. $CORE_PATH/hw/scripts/openocd.sh
+
+FILE_NAME=$BIN_BASENAME.elf
+CFG="-f $BSP_PATH/arduino_zero.cfg"
+
+openocd_debug
+
+
+

hw/bsp/arduino_zero/arduino_zero_download.sh

@@ -0,0 +1,55 @@
+#!/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
+#  - IMAGE_SLOT is the image slot to download to (for non-mfg-image, non-boot)
+#  - FEATURES holds the target features string
+#  - EXTRA_JTAG_CMD holds extra parameters to pass to jtag software
+#  - MFG_IMAGE is "1" if this is a manufacturing image
+#  - FLASH_OFFSET contains the flash offset to download to
+#  - BOOT_LOADER is set if downloading a bootloader
+
+. $CORE_PATH/hw/scripts/openocd.sh
+
+CFG="-f $BSP_PATH/arduino_zero.cfg"
+
+PROTECT_BOOT=0
+if [ "$MFG_IMAGE" ]; then
+    FLASH_OFFSET=0x00000000
+    PROTECT_BOOT=1
+elif [ "$BOOT_LOADER" ]; then
+    PROTECT_BOOT=1
+fi
+
+if [ $PROTECT_BOOT -eq 1 ]; then
+    # we will unprotect and reprotect our bootloader to ensure that its
+    # safe. also Arduino Zero Pro boards looks like they come with the 
+    # arduino bootloader protected via the NVM AUX
+    CFG_POST_INIT="at91samd bootloader 0"
+
+    # XXX reprotect todo
+    #PROTECT_FLASH="at91samd bootloader 16384"
+fi
+
+common_file_to_load
+openocd_load
+openocd_reset_run

hw/bsp/arduino_zero/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.arch: cortex_m0
+bsp.compiler: "@apache-mynewt-core/compiler/arm-none-eabi-m0"
+bsp.linkerscript:
+    - "hw/bsp/arduino_zero/arduino_zero.ld"
+    - "hw/mcu/atmel/samd21xx/samd21xx.ld"
+bsp.linkerscript.BOOT_LOADER.OVERWRITE:
+    - "hw/bsp/arduino_zero/arduino_zero_boot.ld"
+    - "hw/mcu/atmel/samd21xx/samd21xx.ld"
+bsp.downloadscript: "hw/bsp/arduino_zero/arduino_zero_download.sh"
+bsp.debugscript: "hw/bsp/arduino_zero/arduino_zero_debug.sh"
+
+bsp.flash_map:
+    areas:
+        FLASH_AREA_BOOTLOADER:
+            device: 0
+            offset: 0x00000000
+            size: 48kB
+        FLASH_AREA_IMAGE_0:
+            device: 0
+            offset: 0x0000c000
+            size: 96kB
+        FLASH_AREA_IMAGE_1:
+            device: 0
+            offset: 0x00024000
+            size: 96kB
+        FLASH_AREA_IMAGE_SCRATCH:
+            device: 0
+            offset: 0x0003c000
+            size: 7kB
+
+        FLASH_AREA_REBOOT_LOG:
+            user_id: 0
+            device: 0
+            offset: 0x0003dc00
+            size: 1kB
+        FLASH_AREA_NFFS:
+            user_id: 1
+            device: 0
+            offset: 0x0003e000
+            size: 8kB

hw/bsp/arduino_zero/include/bsp/bsp.h

@@ -0,0 +1,100 @@
+/**
+ * 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 __ARDUINO_BSP_H
+#define __ARDUINO_BSP_H
+
+#include <mcu/mcu.h>
+#include "syscfg/syscfg.h"
+
+#include <inttypes.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+enum system_device_id
+{
+    /* NOTE: Some HALs use a virtual enumeration of the devices, while
+     * other still use the actual pins (GPIO). For arduino this means
+     * that the sysIDs for analog and digital pins are the actual pin
+     * numbers */
+
+    ARDUINO_ZERO_D0 =     (11),
+    ARDUINO_ZERO_D1 =     (10),
+    ARDUINO_ZERO_D3 =     (9),
+    ARDUINO_ZERO_D5 =     (15),
+    ARDUINO_ZERO_D6 =     (20),
+    ARDUINO_ZERO_D7 =     (21),
+    ARDUINO_ZERO_D8 =     (6),
+    ARDUINO_ZERO_D9 =     (7),
+    ARDUINO_ZERO_D10 =    (18),
+    ARDUINO_ZERO_D11 =    (16),
+    ARDUINO_ZERO_D12 =    (19),
+    ARDUINO_ZERO_D13 =    (17),
+
+#if MYNEWT_VAL(BSP_ARDUINO_ZERO_PRO)
+    ARDUINO_ZERO_D2 =     (8),
+    ARDUINO_ZERO_D4 =     (14),
+#else
+    ARDUINO_ZERO_D2 =     (14),
+    ARDUINO_ZERO_D4 =     (8),
+#endif
+
+    /* Use SPI 2 */
+    ARDUINO_ZERO_SPI_ICSP = 0,
+
+    /* Use SPI 3 */
+    ARDUINO_ZERO_SPI_ALT  = 1,
+
+    /* a I2c port on SCLK and SDA */
+    ARDUINO_ZERO_I2C      = 4,
+};
+
+#define BSP_WINC1500_SPI_PORT   0
+
+extern uint8_t _ram_start;
+#define RAM_SIZE        0x00008000
+
+#define ARDUINO_ZERO_PIN_UART_RX (ARDUINO_ZERO_D0)
+#define ARDUINO_ZERO_PIN_UART_TX (ARDUINO_ZERO_D1)
+
+#define LED_BLINK_PIN   (ARDUINO_ZERO_D13)
+#define LED_2           (27)
+
+#define CONSOLE_UART_SPEED      115200
+
+/*
+ * Wiring of Wifi Shield 101 chip to SAMD21.
+ */
+#define WINC1500_PIN_RESET      /* PA15 */      MCU_GPIO_PORTA(15)
+    /* WINC1500_PIN_WAKE */     /* NC */
+#define WINC1500_PIN_IRQ        /* PA21 */      MCU_GPIO_PORTA(21)
+    /* WINC1500_PIN_ENABLE */   /* NC */
+
+#define WINC1500_SPI_SPEED                      4000000
+#define WINC1500_SPI_SSN        /* PA18 */      MCU_GPIO_PORTA(18)
+#define WINC1500_SPI_SCK        /* PB11 */      MCU_GPIO_PORTB(11)
+#define WINC1500_SPI_MOSI       /* PB10 */      MCU_GPIO_PORTB(10)
+#define WINC1500_SPI_MISO       /* PA12 */      MCU_GPIO_PORTA(12)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  /* __ARDUINO_BSP_H */

hw/bsp/arduino_zero/pkg.yml

@@ -0,0 +1,33 @@
+#
+# 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/arduino_zero"
+pkg.type: bsp
+
+pkg.deps:
+    - "@apache-mynewt-core/hw/mcu/atmel/samd21xx"
+    - "@apache-mynewt-core/hw/hal"
+    - "@apache-mynewt-core/libc/baselibc"
+
+pkg.deps.UART_0:
+    - "@apache-mynewt-core/hw/drivers/uart"
+    - "@apache-mynewt-core/hw/drivers/uart/uart_hal"
+
+pkg.cflags:
+    - -D__SAMD21G18A__