File content as of revision 4:291477e8690d:

From 0420b36056436f6f7b387b614de8ab9e0aa0f373 Mon Sep 17 00:00:00 2001
From: Mahir Ozturk <Mahir.Ozturk@maximintegrated.com>
Date: Wed, 29 Mar 2017 14:16:50 +0300
Subject: [PATCH] porting MAX32625PICO to mbed-os 5

---
 .../TARGET_MAX32625PICO/PeripheralNames.h          |  88 +++++++++++
 .../TARGET_MAX32625/TARGET_MAX32625PICO/PinNames.h | 140 ++++++++++++++++
 .../TARGET_MAX32625PICO/low_level_init.c           |  56 +++++++
 .../TARGET_MAX32625PICO/MAX32625.sct               |  16 ++
 .../TARGET_MAX32625PICO/max32625.ld                | 176 +++++++++++++++++++++
 .../TOOLCHAIN_IAR/TARGET_MAX32625PICO/MAX32625.icf |  29 ++++
 .../TARGET_MAX32625/device/system_max32625.c       |   7 +
 targets/targets.json                               |   9 ++
 8 files changed, 521 insertions(+)
 create mode 100644 targets/TARGET_Maxim/TARGET_MAX32625/TARGET_MAX32625PICO/PeripheralNames.h
 create mode 100644 targets/TARGET_Maxim/TARGET_MAX32625/TARGET_MAX32625PICO/PinNames.h
 create mode 100644 targets/TARGET_Maxim/TARGET_MAX32625/TARGET_MAX32625PICO/low_level_init.c
 create mode 100644 targets/TARGET_Maxim/TARGET_MAX32625/device/TOOLCHAIN_ARM_STD/TARGET_MAX32625PICO/MAX32625.sct
 create mode 100644 targets/TARGET_Maxim/TARGET_MAX32625/device/TOOLCHAIN_GCC_ARM/TARGET_MAX32625PICO/max32625.ld
 create mode 100644 targets/TARGET_Maxim/TARGET_MAX32625/device/TOOLCHAIN_IAR/TARGET_MAX32625PICO/MAX32625.icf

diff --git a/targets/TARGET_Maxim/TARGET_MAX32625/TARGET_MAX32625PICO/PeripheralNames.h b/targets/TARGET_Maxim/TARGET_MAX32625/TARGET_MAX32625PICO/PeripheralNames.h
new file mode 100644
index 000000000..4686ef9c9
--- /dev/null
+++ b/targets/TARGET_Maxim/TARGET_MAX32625/TARGET_MAX32625PICO/PeripheralNames.h
@@ -0,0 +1,88 @@
+/*******************************************************************************
+ * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
+ * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name of Maxim Integrated
+ * Products, Inc. shall not be used except as stated in the Maxim Integrated
+ * Products, Inc. Branding Policy.
+ *
+ * The mere transfer of this software does not imply any licenses
+ * of trade secrets, proprietary technology, copyrights, patents,
+ * trademarks, maskwork rights, or any other form of intellectual
+ * property whatsoever. Maxim Integrated Products, Inc. retains all
+ * ownership rights.
+ *******************************************************************************
+ */
+
+#ifndef MBED_PERIPHERALNAMES_H
+#define MBED_PERIPHERALNAMES_H
+
+#include "cmsis.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+    UART_0 = MXC_BASE_UART0,
+    UART_1 = MXC_BASE_UART1,
+    UART_2 = MXC_BASE_UART2,
+    STDIO_UART = UART_1
+} UARTName;
+
+typedef enum {
+    I2C_0 = MXC_BASE_I2CM0,
+    I2C_1 = MXC_BASE_I2CM1
+} I2CName;
+
+typedef enum {
+    SPI_0 = MXC_BASE_SPIM0,
+    SPI_1 = MXC_BASE_SPIM1,
+    SPI_2 = MXC_BASE_SPIM2
+} SPIName;
+
+typedef enum {
+    PWM_0 = MXC_BASE_PT0,
+    PWM_1 = MXC_BASE_PT1,
+    PWM_2 = MXC_BASE_PT2,
+    PWM_3 = MXC_BASE_PT3,
+    PWM_4 = MXC_BASE_PT4,
+    PWM_5 = MXC_BASE_PT5,
+    PWM_6 = MXC_BASE_PT6,
+    PWM_7 = MXC_BASE_PT7,
+    PWM_8 = MXC_BASE_PT8,
+    PWM_9 = MXC_BASE_PT9,
+    PWM_10 = MXC_BASE_PT10,
+    PWM_11 = MXC_BASE_PT11,
+    PWM_12 = MXC_BASE_PT12,
+    PWM_13 = MXC_BASE_PT13,
+    PWM_14 = MXC_BASE_PT14,
+    PWM_15 = MXC_BASE_PT15
+} PWMName;
+
+typedef enum {
+    ADC = MXC_BASE_ADC
+} ADCName;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/targets/TARGET_Maxim/TARGET_MAX32625/TARGET_MAX32625PICO/PinNames.h b/targets/TARGET_Maxim/TARGET_MAX32625/TARGET_MAX32625PICO/PinNames.h
new file mode 100644
index 000000000..1cbd97e37
--- /dev/null
+++ b/targets/TARGET_Maxim/TARGET_MAX32625/TARGET_MAX32625PICO/PinNames.h
@@ -0,0 +1,140 @@
+/*******************************************************************************
+ * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
+ * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name of Maxim Integrated
+ * Products, Inc. shall not be used except as stated in the Maxim Integrated
+ * Products, Inc. Branding Policy.
+ *
+ * The mere transfer of this software does not imply any licenses
+ * of trade secrets, proprietary technology, copyrights, patents,
+ * trademarks, maskwork rights, or any other form of intellectual
+ * property whatsoever. Maxim Integrated Products, Inc. retains all
+ * ownership rights.
+ *******************************************************************************
+ */
+
+#ifndef MBED_PINNAMES_H
+#define MBED_PINNAMES_H
+
+#include "cmsis.h"
+#include "gpio_regs.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+    PIN_INPUT  = 0, /* MXC_V_GPIO_OUT_MODE_HIGH_Z,*/
+    PIN_OUTPUT = 1  /* MXC_V_GPIO_OUT_MODE_NORMAL_DRIVE */
+} PinDirection;
+
+#define PORT_SHIFT  12
+#define PINNAME_TO_PORT(name)   ((unsigned int)(name) >> PORT_SHIFT)
+#define PINNAME_TO_PIN(name)    ((unsigned int)(name) & ~(0xFFFFFFFF << PORT_SHIFT))
+
+#define NOT_CONNECTED (int)0xFFFFFFFF
+
+typedef enum {
+    P0_0 = (0 << PORT_SHIFT), P0_1, P0_2, P0_3, P0_4, P0_5, P0_6, P0_7,
+    P1_0 = (1 << PORT_SHIFT), P1_1, P1_2, P1_3, P1_4, P1_5, P1_6, P1_7,
+    P2_0 = (2 << PORT_SHIFT), P2_1, P2_2, P2_3, P2_4, P2_5, P2_6, P2_7,
+    P3_0 = (3 << PORT_SHIFT), P3_1, P3_2, P3_3, P3_4, P3_5, P3_6, P3_7,
+    P4_0 = (4 << PORT_SHIFT), P4_1, P4_2, P4_3, P4_4, P4_5, P4_6, P4_7,
+
+    // Analog input pins
+    AIN_0 = (0xA << PORT_SHIFT), AIN_1, AIN_2, AIN_3, AIN_4, AIN_5, AIN_6, AIN_7, AIN_8, AIN_9,
+
+    // LEDs
+    LED1 = P2_4,
+    LED2 = P2_5,
+    LED3 = P2_6,
+    LED_RED = LED1,
+    LED_GREEN = LED2,
+    LED_BLUE = LED3,
+
+    // Push button
+    SW1 = P2_7,
+
+    // USB bridge connected UART pins
+    USBTX = P2_1,
+    USBRX = P2_0,
+    STDIO_UART_TX = USBTX,
+    STDIO_UART_RX = USBRX,
+
+    // I2C pins
+    I2C0_SCL = P1_7,
+    I2C0_SDA = P1_6,
+
+    I2C1_SCL = P3_5,
+    I2C1_SDA = P3_4,
+
+    // UART pins
+    UART0_RX  = P0_0,
+    UART0_TX  = P0_1,
+    UART0_CTS = P0_2,
+    UART0_RTS = P0_3,
+
+    UART1_RX  = P2_0,
+    UART1_TX  = P2_1,
+
+    UART2_RX  = P3_0,
+    UART2_TX  = P3_1,
+    UART2_CTS = P3_2,
+    UART2_RTS = P3_3,
+
+    // SPI pins
+    SPI0_SCK  = P0_4,
+    SPI0_MOSI = P0_5,
+    SPI0_MISO = P0_6,
+    SPI0_SS   = P0_7,
+
+    SPI1_SCK  = P1_0,
+    SPI1_MOSI = P1_1,
+    SPI1_MISO = P1_2,
+    SPI1_SS   = P1_3,
+
+    SPI2_SCK  = P2_4,
+    SPI2_MOSI = P2_5,
+    SPI2_MISO = P2_6,
+    SPI2_SS   = P2_7,
+
+    // Not connected
+    NC = NOT_CONNECTED
+} PinName;
+
+typedef enum {
+    PullUp,
+    PullDown,
+    OpenDrain,
+    PullNone,
+    PullDefault = PullUp
+} PinMode;
+
+typedef enum {
+    LED_ON = 0,
+    LED_OFF = 1
+} LedStates;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/targets/TARGET_Maxim/TARGET_MAX32625/TARGET_MAX32625PICO/low_level_init.c b/targets/TARGET_Maxim/TARGET_MAX32625/TARGET_MAX32625PICO/low_level_init.c
new file mode 100644
index 000000000..1c56f9891
--- /dev/null
+++ b/targets/TARGET_Maxim/TARGET_MAX32625/TARGET_MAX32625PICO/low_level_init.c
@@ -0,0 +1,56 @@
+/*******************************************************************************
+ * Copyright (C) 2017 Maxim Integrated Products, Inc., All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
+ * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name of Maxim Integrated
+ * Products, Inc. shall not be used except as stated in the Maxim Integrated
+ * Products, Inc. Branding Policy.
+ *
+ * The mere transfer of this software does not imply any licenses
+ * of trade secrets, proprietary technology, copyrights, patents,
+ * trademarks, maskwork rights, or any other form of intellectual
+ * property whatsoever. Maxim Integrated Products, Inc. retains all
+ * ownership rights.
+ *******************************************************************************
+ */
+ 
+#include "cmsis.h"
+#include "ioman_regs.h"
+#include "gpio_regs.h"
+ 
+//******************************************************************************
+// This function will get called early in system initialization
+void low_level_init(void)
+{
+    /* The MAX32625PICO board utilizes a bootloader that can leave some 
+     * peripherals in a partially configured state.  This function resets
+     * those to allow proper initialization.
+     */
+    MXC_IOMAN->uart0_req = 0x0;         // Clear any requests
+    MXC_IOMAN->uart1_req = 0x0;         // Clear any requests
+
+    MXC_GPIO->inten[2] = 0x0;           // Clear interrupt enable
+    MXC_GPIO->int_mode[2] = 0x0;        // Clear interrupt mode
+    MXC_GPIO->in_mode[2] = 0x22222222;  // Clear input mode
+    MXC_GPIO->out_val[2] = 0x0;  // Clear output value
+    MXC_GPIO->out_mode[2] = 0xFFFFFFFF;  // Clear output mode
+    
+
+}
diff --git a/targets/TARGET_Maxim/TARGET_MAX32625/device/TOOLCHAIN_ARM_STD/TARGET_MAX32625PICO/MAX32625.sct b/targets/TARGET_Maxim/TARGET_MAX32625/device/TOOLCHAIN_ARM_STD/TARGET_MAX32625PICO/MAX32625.sct
new file mode 100644
index 000000000..6ea0cb73b
--- /dev/null
+++ b/targets/TARGET_Maxim/TARGET_MAX32625/device/TOOLCHAIN_ARM_STD/TARGET_MAX32625PICO/MAX32625.sct
@@ -0,0 +1,16 @@
+; MAX32625
+; 512KB FLASH (0x70000) @ 0x000010000
+; 160KB RAM (0x24F00) @ 0x20003100
+
+LR_IROM1 0x000010000 0x70000  {    ; load region size_region
+    ER_IROM1 0x000010000 0x70000  {  ; load address = execution address 
+        *.o (RESET, +First)
+        *(InRoot$$Sections)
+        .ANY (+RO)
+    }
+
+    ; [RAM] Vector table dynamic copy: 68 vectors * 4 bytes = 272 (0x110)
+    RW_IRAM1 (0x20003100+0x110) (0x24F00-0x110)  {  ; RW data
+        .ANY (+RW +ZI)
+    }
+}
diff --git a/targets/TARGET_Maxim/TARGET_MAX32625/device/TOOLCHAIN_GCC_ARM/TARGET_MAX32625PICO/max32625.ld b/targets/TARGET_Maxim/TARGET_MAX32625/device/TOOLCHAIN_GCC_ARM/TARGET_MAX32625PICO/max32625.ld
new file mode 100644
index 000000000..f51f007f1
--- /dev/null
+++ b/targets/TARGET_Maxim/TARGET_MAX32625/device/TOOLCHAIN_GCC_ARM/TARGET_MAX32625PICO/max32625.ld
@@ -0,0 +1,176 @@
+/*******************************************************************************
+ * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
+ * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name of Maxim Integrated
+ * Products, Inc. shall not be used except as stated in the Maxim Integrated
+ * Products, Inc. Branding Policy.
+ *
+ * The mere transfer of this software does not imply any licenses
+ * of trade secrets, proprietary technology, copyrights, patents,
+ * trademarks, maskwork rights, or any other form of intellectual
+ * property whatsoever. Maxim Integrated Products, Inc. retains all
+ * ownership rights.
+ *******************************************************************************
+ */
+
+MEMORY
+{
+    FLASH (rx) : ORIGIN = 0x00010000, LENGTH = 0x00070000
+    RAM  (rwx) : ORIGIN = 0x20003100, LENGTH = 0x00024F00
+}
+
+/* Linker script to place sections and symbol values. Should be used together
+ * with other linker script that defines memory regions FLASH and RAM.
+ * It references following symbols, which must be defined in code:
+ *   Reset_Handler : Entry of reset handler
+ * 
+ * It defines following symbols, which code can use without definition:
+ *   __exidx_start
+ *   __exidx_end
+ *   __etext
+ *   __data_start__
+ *   __preinit_array_start
+ *   __preinit_array_end
+ *   __init_array_start
+ *   __init_array_end
+ *   __fini_array_start
+ *   __fini_array_end
+ *   __data_end__
+ *   __bss_start__
+ *   __bss_end__
+ *   __end__
+ *   end
+ *   __HeapLimit
+ *   __StackLimit
+ *   __StackTop
+ *   __stack
+ */
+ENTRY(Reset_Handler)
+
+SECTIONS
+{
+    .text :
+    {
+        KEEP(*(.isr_vector))
+        *(.text*)
+
+        KEEP(*(.init))
+        KEEP(*(.fini))
+
+        /* .ctors */
+        *crtbegin.o(.ctors)
+        *crtbegin?.o(.ctors)
+        *(EXCLUDE_FILE(*crtend?.o *crtend.o) .ctors)
+        *(SORT(.ctors.*))
+        *(.ctors)
+
+        /* .dtors */
+        *crtbegin.o(.dtors)
+        *crtbegin?.o(.dtors)
+        *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
+        *(SORT(.dtors.*))
+        *(.dtors)
+
+        *(.rodata*)
+
+        KEEP(*(.eh_frame*))
+    } > FLASH
+
+    .ARM.extab :
+    {
+        *(.ARM.extab* .gnu.linkonce.armextab.*)
+    } > FLASH
+
+    __exidx_start = .;
+    .ARM.exidx :
+    {
+        *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+    } > FLASH
+    __exidx_end = .;
+
+    __etext = .;
+
+    .data : AT (__etext)
+    {
+        __data_start__ = .;
+        *(vtable)
+        *(.data*)
+
+        . = ALIGN(4);
+        /* preinit data */
+        PROVIDE_HIDDEN (__preinit_array_start = .);
+        KEEP(*(.preinit_array))
+        PROVIDE_HIDDEN (__preinit_array_end = .);
+
+        . = ALIGN(4);
+        /* init data */
+        PROVIDE_HIDDEN (__init_array_start = .);
+        KEEP(*(SORT(.init_array.*)))
+        KEEP(*(.init_array))
+        PROVIDE_HIDDEN (__init_array_end = .);
+
+
+        . = ALIGN(4);
+        /* finit data */
+        PROVIDE_HIDDEN (__fini_array_start = .);
+        KEEP(*(SORT(.fini_array.*)))
+        KEEP(*(.fini_array))
+        PROVIDE_HIDDEN (__fini_array_end = .);
+
+        . = ALIGN(4);
+        /* All data end */
+        __data_end__ = .;
+
+    } > RAM
+
+    .bss :
+    {
+        __bss_start__ = .;
+        *(.bss*)
+        *(COMMON)
+        __bss_end__ = .;
+    } > RAM
+
+    .heap :
+    {
+        __end__ = .;
+        end = __end__;
+        *(.heap*)
+        __HeapLimit = .;
+    } > RAM
+
+    /* .stack_dummy section doesn't contains any symbols. It is only
+     * used for linker to calculate size of stack sections, and assign
+     * values to stack symbols later */
+    .stack_dummy :
+    {
+        *(.stack)
+    } > RAM
+
+    /* Set stack top to end of RAM, and stack limit move down by
+     * size of stack_dummy section */
+    __StackTop = ORIGIN(RAM) + LENGTH(RAM);
+    __StackLimit = __StackTop - SIZEOF(.stack_dummy);
+    PROVIDE(__stack = __StackTop);
+
+    /* Check if data + heap + stack exceeds RAM limit */
+    ASSERT(__StackLimit >= __HeapLimit, "region RAM overflowed with stack")
+}
diff --git a/targets/TARGET_Maxim/TARGET_MAX32625/device/TOOLCHAIN_IAR/TARGET_MAX32625PICO/MAX32625.icf b/targets/TARGET_Maxim/TARGET_MAX32625/device/TOOLCHAIN_IAR/TARGET_MAX32625PICO/MAX32625.icf
new file mode 100644
index 000000000..bba1c8067
--- /dev/null
+++ b/targets/TARGET_Maxim/TARGET_MAX32625/device/TOOLCHAIN_IAR/TARGET_MAX32625PICO/MAX32625.icf
@@ -0,0 +1,29 @@
+/* [ROM] */
+define symbol __intvec_start__        = 0x00010000;
+define symbol __region_ROM_start__    = 0x00010000;
+define symbol __region_ROM_end__      = 0x0007FFFF;
+
+/* [RAM] Vector table dynamic copy: 68 vectors * 4 bytes = 272 (0x110) bytes */
+define symbol __NVIC_start__          = 0x00010000;
+define symbol __NVIC_end__            = 0x00010110; /* to be aligned on 8 bytes */
+define symbol __region_RAM_start__    = 0x20003100;
+define symbol __region_RAM_end__      = 0x20027FFF;
+
+/* Memory regions */
+define memory mem with size = 4G;
+define region ROM_region      = mem:[from __region_ROM_start__   to __region_ROM_end__];
+define region RAM_region      = mem:[from __region_RAM_start__   to __region_RAM_end__];
+
+/* Stack and Heap */
+define symbol __size_cstack__ = 0x5000;
+define symbol __size_heap__   = 0xA000;
+define block CSTACK    with alignment = 8, size = __size_cstack__   { };
+define block HEAP      with alignment = 8, size = __size_heap__     { };
+
+initialize by copy { readwrite };
+do not initialize  { section .noinit };
+
+place at address mem:__intvec_start__ { readonly section .intvec };
+place in ROM_region   { readonly };
+place in RAM_region   { readwrite,
+                        block CSTACK, block HEAP };
diff --git a/targets/TARGET_Maxim/TARGET_MAX32625/device/system_max32625.c b/targets/TARGET_Maxim/TARGET_MAX32625/device/system_max32625.c
index 4f77b2116..bba36bb5c 100644
--- a/targets/TARGET_Maxim/TARGET_MAX32625/device/system_max32625.c
+++ b/targets/TARGET_Maxim/TARGET_MAX32625/device/system_max32625.c
@@ -171,6 +171,10 @@ __weak int PreInit(void)
     return 0;
 }
 
+/* Override this function for early platform initialization
+*/
+__weak void low_level_init(void) {}
+
 /* This function is called just before control is transferred to main().
  */
 void SystemInit(void)
@@ -258,6 +262,9 @@ void SystemInit(void)
     __ISB();
 #endif
 
+    /* Early platform initialization */
+    low_level_init();
+
     /* Perform an initial trim of the internal ring oscillator */
     CLKMAN_TrimRO();
 }
diff --git a/targets/targets.json b/targets/targets.json
index ee38b950b..12d5cf61b 100644
--- a/targets/targets.json
+++ b/targets/targets.json
@@ -1904,6 +1904,15 @@
         "device_has": ["ANALOGIN", "ERROR_RED", "I2C", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_FC", "SLEEP", "SPI", "STDIO_MESSAGES"],
         "release_versions": ["2", "5"]
     },
+	"MAX32625PICO": {
+        "inherits": ["Target"],
+        "core": "Cortex-M4F",
+        "macros": ["__SYSTEM_HFX=96000000","TARGET=MAX32625","TARGET_REV=0x4132"],
+        "extra_labels": ["Maxim", "MAX32625"],
+        "supported_toolchains": ["GCC_ARM", "IAR", "ARM"],
+        "device_has": ["ANALOGIN", "ERROR_RED", "I2C", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_FC", "SLEEP", "SPI", "STDIO_MESSAGES"],
+        "release_versions": ["2", "5"]
+    },
     "MAX32630FTHR": {
         "inherits": ["Target"],
         "core": "Cortex-M4F",
-- 
2.11.1.windows.1