cpu: Add PIC32MZ support

boards/pic32-wifire/Makefile

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+MODULE = board
+include $(RIOTBASE)/Makefile.base

boards/pic32-wifire/Makefile.features

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+# Put defined MCU peripherals here (in alphabetical order)
+FEATURES_PROVIDED += periph_timer
+FEATURES_PROVIDED += periph_uart
+
+# Various other features (if any)
+FEATURES_PROVIDED += cpp
+
+# The board MPU family (used for grouping by the CI system)
+FEATURES_MCU_GROUP = mips32r2

boards/pic32-wifire/Makefile.include

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+export CPU = mips_pic32mz
+export CPU_MODEL=p32mz2048efg100
+export INCLUDES += -I$(RIOTBOARD)/$(BOARD)/include/
+export APPDEPS += $(RIOTCPU)/$(CPU)/$(CPU_MODEL)/$(CPU_MODEL).S

boards/pic32-wifire/include/board.h

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+/*
+ * Copyright(C) 2017, Imagination Technologies Limited and/or its
+ *                 affiliated group companies.
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ *
+ */
+
+/**
+ * @defgroup    boards_pic32-wifire Digilent PIC32 WiFire
+ * @ingroup     boards
+ * @brief       board configuration for the Digilent PIC32 WiFire
+ * @details
+ * See:
+ * http://store.digilentinc.com/chipkit-wi-fire-wifi-enabled-mz-microcontroller-board/
+ * for more information on the board.
+ *
+ * @{
+ *
+ * @file
+ * @brief       board configuration for the Digilent PIC32 WiFire
+ *
+ * @author      Neil Jones <Neil.Jones@imgtec.com>
+ */
+
+#ifndef _BOARD_H_
+#define _BOARD_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "vendor/p32mz2048efg100.h"
+
+/**
+ * @brief       Set how many increments of the count register per uS
+ *              needed by the timer code.
+ */
+#define TICKS_PER_US (100)
+
+/**
+ * @brief We are using an External Interrupt Controller (all pic32 devices use this mode)
+ */
+#define EIC_IRQ (1)
+
+/**
+ * @brief       Board level initialisation
+ */
+void board_init(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _BOARD_H_ */
+/** @} */

boards/pic32-wifire/include/periph_conf.h

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+/*
+ * Copyright(C) 2016,2017, Imagination Technologies Limited and/or its
+ *                 affiliated group companies.
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ *
+ */
+
+/**
+ * @defgroup    boards_pic32-wifire Digilent PIC32 WiFire
+ * @ingroup     boards
+ * @brief       peripheral configuration for the Digilent PIC32 WiFire
+ * @{
+ *
+ * @file
+ * @brief       peripheral configuration for the Digilent PIC32 WiFire
+ *
+ * @author       Neil Jones <Neil.Jones@imgtec.com>
+ */
+#ifndef _PERIPH_CONF_H_
+#define _PERIPH_CONF_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief The peripheral clock is required for the UART Baud rate calculation
+ *        It is configured by the 'config' registers (see pic32_config_settings.c)
+ */
+#define PERIPHERAL_CLOCK (100000000)  /* Hz */
+
+/**
+ * @brief   Timer definitions
+ * @{
+ */
+#define TIMER_NUMOF         (1)
+#define TIMER_0_CHANNELS    (3)
+/** @} */
+
+/**
+  * @brief   UART Definitions
+  *          There are 6 UARTS available on this CPU.
+  *          We route debug via UART4 on this board,
+  *          this is the UART connected to the FTDI USB <-> UART device.
+  *
+  *          Note Microchip number the UARTS 1->4.
+  * @{
+  */
+#define UART_NUMOF          (6)
+#define DEBUG_VIA_UART      (4)
+#define DEBUG_UART_BAUD     (9600)
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+/** @} */