lpcxpresso 1769 build with makefile but not blinky yet

hw/bsp/lpcxpresso1347/board.mk

@@ -4,7 +4,6 @@ CFLAGS += \
   -mcpu=cortex-m3 \
   -nostdlib \
   -DCORE_M3 \
-  -D__VTOR_PRESENT=0 \
   -DCFG_TUSB_MCU=OPT_MCU_LPC13XX \
   -D__USE_LPCOPEN \
   -DCFG_TUSB_MEM_SECTION='__attribute__((section(".data.$$RAM3")))' \

hw/bsp/lpcxpresso1347/board_lpcxpresso1347.c

@@ -30,9 +30,9 @@
 #define LED_PORT      0
 #define LED_PIN       7
 
-// Joytick UP if connected to LPCXpresso Base board
+// Joytick Down if connected to LPCXpresso Base board
 #define BUTTON_PORT   1
-#define BUTTON_PIN    22
+#define BUTTON_PIN    20
 
 //static const struct {
 //  uint8_t port;
@@ -103,6 +103,7 @@ void board_init(void)
 //--------------------------------------------------------------------+
 // Board porting API
 //--------------------------------------------------------------------+
+
 #if CFG_TUSB_OS == OPT_OS_NONE
 volatile uint32_t system_ticks = 0;
 void SysTick_Handler (void)

hw/bsp/lpcxpresso1769/board.mk

@@ -0,0 +1,38 @@
+CFLAGS += \
+  -mthumb \
+  -mabi=aapcs \
+  -mcpu=cortex-m3 \
+  -nostdlib \
+  -DCORE_M3 \
+  -DCFG_TUSB_MCU=OPT_MCU_LPC175X_6X \
+  -D__USE_LPCOPEN \
+  -DRTC_EV_SUPPORT=0
+
+# All source paths should be relative to the top level.
+LD_FILE = hw/bsp/lpcxpresso1769/lpc1769.ld
+
+SRC_C += \
+	hw/mcu/nxp/lpcopen/lpc_chip_175x_6x/src/chip_17xx_40xx.c \
+	hw/mcu/nxp/lpcopen/lpc_chip_175x_6x/src/clock_17xx_40xx.c \
+	hw/mcu/nxp/lpcopen/lpc_chip_175x_6x/src/gpio_17xx_40xx.c \
+	hw/mcu/nxp/lpcopen/lpc_chip_175x_6x/src/iocon_17xx_40xx.c \
+	hw/mcu/nxp/lpcopen/lpc_chip_175x_6x/src/sysctl_17xx_40xx.c \
+	hw/mcu/nxp/lpcopen/lpc_chip_175x_6x/src/sysinit_17xx_40xx.c \
+	hw/mcu/nxp/lpcopen/lpc_chip_175x_6x/src/uart_17xx_40xx.c
+
+INC += \
+	$(TOP)/hw/mcu/nxp/lpcopen/lpc_chip_175x_6x/inc
+
+# For TinyUSB port source
+VENDOR = nxp
+CHIP_FAMILY = lpc17_40
+
+# For freeRTOS port source
+FREERTOS_PORT = ARM_CM3
+
+# For flash-jlink target
+JLINK_DEVICE = LPC1769
+JLINK_IF = swd
+
+# flash using jlink
+flash: flash-jlink

hw/bsp/lpcxpresso1769/board_lpcxpresso1769.c

@@ -30,6 +30,10 @@
 #define LED_PORT      0
 #define LED_PIN       22
 
+// Joytick Down if connected to LPCXpresso Base board
+#define BUTTON_PORT   0
+#define BUTTON_PIN    15
+
 #define BOARD_UART_PORT   LPC_UART3
 
 /* System oscillator rate and RTC oscillator rate */
@@ -60,20 +64,18 @@ static const PINMUX_GRP_T pin_usb_mux[] =
   {1, 19, IOCON_MODE_INACT | IOCON_FUNC2}, // USB_PPWR
   {1, 22, IOCON_MODE_INACT | IOCON_FUNC2}, // USB_PWRD
 
-	/* VBUS is not connected on this board, so leave the pin at default setting. */
-	/*Chip_IOCON_PinMux(LPC_IOCON, 1, 30, IOCON_MODE_INACT, IOCON_FUNC2);*/ /* USB VBUS */
-};
-
-enum {
-  BOARD_BUTTON_COUNT = 5
+  /* VBUS is not connected on this board, so leave the pin at default setting. */
+  /*Chip_IOCON_PinMux(LPC_IOCON, 1, 30, IOCON_MODE_INACT, IOCON_FUNC2);*/ /* USB VBUS */
 };
 
 // Invoked by startup code
 void SystemInit(void)
 {
-  /* Enable IOCON clock */
   Chip_IOCON_SetPinMuxing(LPC_IOCON, pinmuxing, sizeof(pinmuxing) / sizeof(PINMUX_GRP_T));
   Chip_SetupXtalClocking();
+
+  /* Setup FLASH access to 4 clocks (100MHz clock) */
+//  Chip_SYSCTL_SetFLASHAccess(FLASHTIM_100MHZ_CPU);
 }
 
 void board_init(void)
@@ -90,11 +92,11 @@ void board_init(void)
 
   Chip_GPIO_Init(LPC_GPIO);
 
-  //------------- LED -------------//
+  // LED
   Chip_GPIO_SetPinDIROutput(LPC_GPIO, LED_PORT, LED_PIN);
 
-  //------------- BUTTON -------------//
-//  for(uint8_t i=0; i<BOARD_BUTTON_COUNT; i++) GPIO_SetDir(buttons[i].port, TU_BIT(buttons[i].pin), 0);
+  // Button
+  Chip_GPIO_SetPinDIRInput(LPC_GPIO, BUTTON_PORT, BUTTON_PIN);
 
 #if 0
   //------------- UART -------------//
@@ -142,13 +144,12 @@ void board_init(void)
   Chip_IOCON_SetPinMuxing(LPC_IOCON, pin_usb_mux, sizeof(pin_usb_mux) / sizeof(PINMUX_GRP_T));
 }
 
-/*------------------------------------------------------------------*/
-/* TUSB HAL MILLISECOND
- *------------------------------------------------------------------*/
-#if CFG_TUSB_OS == OPT_OS_NONE
+//--------------------------------------------------------------------+
+// Board porting API
+//--------------------------------------------------------------------+
 
+#if CFG_TUSB_OS == OPT_OS_NONE
 volatile uint32_t system_ticks = 0;
-
 void SysTick_Handler (void)
 {
   system_ticks++;
@@ -158,47 +159,25 @@ uint32_t board_millis(void)
 {
   return system_ticks;
 }
-
 #endif
 
-//--------------------------------------------------------------------+
-// LEDS
-//--------------------------------------------------------------------+
 void board_led_write(bool state)
 {
   Chip_GPIO_SetPinState(LPC_GPIO, LED_PORT, LED_PIN, state);
 }
 
-//--------------------------------------------------------------------+
-// BUTTONS
-//--------------------------------------------------------------------+
-#if 0
-static bool button_read(uint8_t id)
-{
-//  return !tu_bit_test( GPIO_ReadValue(buttons[id].port), buttons[id].pin ); // button is active low
-  return false;
-}
-#endif
-
 uint32_t board_button_read(void)
 {
-  uint32_t result = 0;
-
-//  for(uint8_t i=0; i<BOARD_BUTTON_COUNT; i++) result |= (button_read(i) ? TU_BIT(i) : 0);
-
-  return result;
+  // active low
+  return Chip_GPIO_GetPinState(LPC_GPIO, BUTTON_PORT, BUTTON_PIN) ? 0 : 1;
 }
 
-//--------------------------------------------------------------------+
-// UART
-//--------------------------------------------------------------------+
 int board_uart_read(uint8_t* buf, int len)
 {
 //  return UART_ReceiveByte(BOARD_UART_PORT);
   (void) buf;
   (void) len;
   return 0;
-
 }
 
 int board_uart_write(void const * buf, int len)

hw/bsp/lpcxpresso1769/cr_startup_lpc175x_6x.c

@@ -0,0 +1,371 @@
+//*****************************************************************************
+// LPC175x_6x Microcontroller Startup code for use with LPCXpresso IDE
+//
+// Version : 140114
+//*****************************************************************************
+//
+// Copyright(C) NXP Semiconductors, 2014
+// All rights reserved.
+//
+// Software that is described herein is for illustrative purposes only
+// which provides customers with programming information regarding the
+// LPC products.  This software is supplied "AS IS" without any warranties of
+// any kind, and NXP Semiconductors and its licensor disclaim any and
+// all warranties, express or implied, including all implied warranties of
+// merchantability, fitness for a particular purpose and non-infringement of
+// intellectual property rights.  NXP Semiconductors assumes no responsibility
+// or liability for the use of the software, conveys no license or rights under any
+// patent, copyright, mask work right, or any other intellectual property rights in
+// or to any products. NXP Semiconductors reserves the right to make changes
+// in the software without notification. NXP Semiconductors also makes no
+// representation or warranty that such application will be suitable for the
+// specified use without further testing or modification.
+//
+// Permission to use, copy, modify, and distribute this software and its
+// documentation is hereby granted, under NXP Semiconductors' and its
+// licensor's relevant copyrights in the software, without fee, provided that it
+// is used in conjunction with NXP Semiconductors microcontrollers.  This
+// copyright, permission, and disclaimer notice must appear in all copies of
+// this code.
+//*****************************************************************************
+
+#if defined (__cplusplus)
+#ifdef __REDLIB__
+#error Redlib does not support C++
+#else
+//*****************************************************************************
+//
+// The entry point for the C++ library startup
+//
+//*****************************************************************************
+extern "C" {
+    extern void __libc_init_array(void);
+}
+#endif
+#endif
+
+#define WEAK __attribute__ ((weak))
+#define ALIAS(f) __attribute__ ((weak, alias (#f)))
+
+//*****************************************************************************
+#if defined (__cplusplus)
+extern "C" {
+#endif
+
+//*****************************************************************************
+#if defined (__USE_CMSIS) || defined (__USE_LPCOPEN)
+// Declaration of external SystemInit function
+extern void SystemInit(void);
+#endif
+
+//*****************************************************************************
+//
+// Forward declaration of the default handlers. These are aliased.
+// When the application defines a handler (with the same name), this will
+// automatically take precedence over these weak definitions
+//
+//*****************************************************************************
+     void ResetISR(void);
+WEAK void NMI_Handler(void);
+WEAK void HardFault_Handler(void);
+WEAK void MemManage_Handler(void);
+WEAK void BusFault_Handler(void);
+WEAK void UsageFault_Handler(void);
+WEAK void SVC_Handler(void);
+WEAK void DebugMon_Handler(void);
+WEAK void PendSV_Handler(void);
+WEAK void SysTick_Handler(void);
+WEAK void IntDefaultHandler(void);
+
+//*****************************************************************************
+//
+// Forward declaration of the specific IRQ handlers. These are aliased
+// to the IntDefaultHandler, which is a 'forever' loop. When the application
+// defines a handler (with the same name), this will automatically take
+// precedence over these weak definitions
+//
+//*****************************************************************************
+void WDT_IRQHandler(void) ALIAS(IntDefaultHandler);
+void TIMER0_IRQHandler(void) ALIAS(IntDefaultHandler);
+void TIMER1_IRQHandler(void) ALIAS(IntDefaultHandler);
+void TIMER2_IRQHandler(void) ALIAS(IntDefaultHandler);
+void TIMER3_IRQHandler(void) ALIAS(IntDefaultHandler);
+void UART0_IRQHandler(void) ALIAS(IntDefaultHandler);
+void UART1_IRQHandler(void) ALIAS(IntDefaultHandler);
+void UART2_IRQHandler(void) ALIAS(IntDefaultHandler);
+void UART3_IRQHandler(void) ALIAS(IntDefaultHandler);
+void PWM1_IRQHandler(void) ALIAS(IntDefaultHandler);
+void I2C0_IRQHandler(void) ALIAS(IntDefaultHandler);
+void I2C1_IRQHandler(void) ALIAS(IntDefaultHandler);
+void I2C2_IRQHandler(void) ALIAS(IntDefaultHandler);
+void SPI_IRQHandler(void) ALIAS(IntDefaultHandler);
+void SSP0_IRQHandler(void) ALIAS(IntDefaultHandler);
+void SSP1_IRQHandler(void) ALIAS(IntDefaultHandler);
+void PLL0_IRQHandler(void) ALIAS(IntDefaultHandler);
+void RTC_IRQHandler(void) ALIAS(IntDefaultHandler);
+void EINT0_IRQHandler(void) ALIAS(IntDefaultHandler);
+void EINT1_IRQHandler(void) ALIAS(IntDefaultHandler);
+void EINT2_IRQHandler(void) ALIAS(IntDefaultHandler);
+void EINT3_IRQHandler(void) ALIAS(IntDefaultHandler);
+void ADC_IRQHandler(void) ALIAS(IntDefaultHandler);
+void BOD_IRQHandler(void) ALIAS(IntDefaultHandler);
+void USB_IRQHandler(void) ALIAS(IntDefaultHandler);
+void CAN_IRQHandler(void) ALIAS(IntDefaultHandler);
+void DMA_IRQHandler(void) ALIAS(IntDefaultHandler);
+void I2S_IRQHandler(void) ALIAS(IntDefaultHandler);
+#if defined (__USE_LPCOPEN)
+void ETH_IRQHandler(void) ALIAS(IntDefaultHandler);
+#else
+void ENET_IRQHandler(void) ALIAS(IntDefaultHandler);
+#endif
+void RIT_IRQHandler(void) ALIAS(IntDefaultHandler);
+void MCPWM_IRQHandler(void) ALIAS(IntDefaultHandler);
+void QEI_IRQHandler(void) ALIAS(IntDefaultHandler);
+void PLL1_IRQHandler(void) ALIAS(IntDefaultHandler);
+void USBActivity_IRQHandler(void) ALIAS(IntDefaultHandler);
+void CANActivity_IRQHandler(void) ALIAS(IntDefaultHandler);
+
+//*****************************************************************************
+//
+// The entry point for the application.
+// __main() is the entry point for Redlib based applications
+// main() is the entry point for Newlib based applications
+//
+//*****************************************************************************
+#if defined (__REDLIB__)
+extern void __main(void);
+#endif
+extern int main(void);
+//*****************************************************************************
+//
+// External declaration for the pointer to the stack top from the Linker Script
+//
+//*****************************************************************************
+extern void _vStackTop(void);
+
+//*****************************************************************************
+#if defined (__cplusplus)
+} // extern "C"
+#endif
+//*****************************************************************************
+//
+// The vector table.
+// This relies on the linker script to place at correct location in memory.
+//
+//*****************************************************************************
+extern void (* const g_pfnVectors[])(void);
+__attribute__ ((section(".isr_vector"))) __attribute__ ((used))
+void (* const g_pfnVectors[])(void) = {
+    // Core Level - CM3
+    &_vStackTop, // The initial stack pointer
+    ResetISR,                               // The reset handler
+    NMI_Handler,                            // The NMI handler
+    HardFault_Handler,                      // The hard fault handler
+    MemManage_Handler,                      // The MPU fault handler
+    BusFault_Handler,                       // The bus fault handler
+    UsageFault_Handler,                     // The usage fault handler
+    0,                                      // Reserved
+    0,                                      // Reserved
+    0,                                      // Reserved
+    0,                                      // Reserved
+    SVC_Handler,                            // SVCall handler
+    DebugMon_Handler,                       // Debug monitor handler
+    0,                                      // Reserved
+    PendSV_Handler,                         // The PendSV handler
+    SysTick_Handler,                        // The SysTick handler
+
+    // Chip Level - LPC17
+    WDT_IRQHandler,                         // 16, 0x40 - WDT
+    TIMER0_IRQHandler,                      // 17, 0x44 - TIMER0
+    TIMER1_IRQHandler,                      // 18, 0x48 - TIMER1
+    TIMER2_IRQHandler,                      // 19, 0x4c - TIMER2
+    TIMER3_IRQHandler,                      // 20, 0x50 - TIMER3
+    UART0_IRQHandler,                       // 21, 0x54 - UART0
+    UART1_IRQHandler,                       // 22, 0x58 - UART1
+    UART2_IRQHandler,                       // 23, 0x5c - UART2
+    UART3_IRQHandler,                       // 24, 0x60 - UART3
+    PWM1_IRQHandler,                        // 25, 0x64 - PWM1
+    I2C0_IRQHandler,                        // 26, 0x68 - I2C0
+    I2C1_IRQHandler,                        // 27, 0x6c - I2C1
+    I2C2_IRQHandler,                        // 28, 0x70 - I2C2
+    SPI_IRQHandler,                         // 29, 0x74 - SPI
+    SSP0_IRQHandler,                        // 30, 0x78 - SSP0
+    SSP1_IRQHandler,                        // 31, 0x7c - SSP1
+    PLL0_IRQHandler,                        // 32, 0x80 - PLL0 (Main PLL)
+    RTC_IRQHandler,                         // 33, 0x84 - RTC
+    EINT0_IRQHandler,                       // 34, 0x88 - EINT0
+    EINT1_IRQHandler,                       // 35, 0x8c - EINT1
+    EINT2_IRQHandler,                       // 36, 0x90 - EINT2
+    EINT3_IRQHandler,                       // 37, 0x94 - EINT3
+    ADC_IRQHandler,                         // 38, 0x98 - ADC
+    BOD_IRQHandler,                         // 39, 0x9c - BOD
+    USB_IRQHandler,                         // 40, 0xA0 - USB
+    CAN_IRQHandler,                         // 41, 0xa4 - CAN
+    DMA_IRQHandler,                         // 42, 0xa8 - GP DMA
+    I2S_IRQHandler,                         // 43, 0xac - I2S
+#if defined (__USE_LPCOPEN)
+    ETH_IRQHandler,                         // 44, 0xb0 - Ethernet
+#else
+    ENET_IRQHandler,                        // 44, 0xb0 - Ethernet
+#endif
+    RIT_IRQHandler,                         // 45, 0xb4 - RITINT
+    MCPWM_IRQHandler,                       // 46, 0xb8 - Motor Control PWM
+    QEI_IRQHandler,                         // 47, 0xbc - Quadrature Encoder
+    PLL1_IRQHandler,                        // 48, 0xc0 - PLL1 (USB PLL)
+    USBActivity_IRQHandler,                 // 49, 0xc4 - USB Activity interrupt to wakeup
+    CANActivity_IRQHandler,                 // 50, 0xc8 - CAN Activity interrupt to wakeup
+};
+
+//*****************************************************************************
+// Functions to carry out the initialization of RW and BSS data sections. These
+// are written as separate functions rather than being inlined within the
+// ResetISR() function in order to cope with MCUs with multiple banks of
+// memory.
+//*****************************************************************************
+__attribute__ ((section(".after_vectors")))
+void data_init(unsigned int romstart, unsigned int start, unsigned int len) {
+    unsigned int *pulDest = (unsigned int*) start;
+    unsigned int *pulSrc = (unsigned int*) romstart;
+    unsigned int loop;
+    for (loop = 0; loop < len; loop = loop + 4)
+        *pulDest++ = *pulSrc++;
+}
+
+__attribute__ ((section(".after_vectors")))
+void bss_init(unsigned int start, unsigned int len) {
+    unsigned int *pulDest = (unsigned int*) start;
+    unsigned int loop;
+    for (loop = 0; loop < len; loop = loop + 4)
+        *pulDest++ = 0;
+}
+
+//*****************************************************************************
+// The following symbols are constructs generated by the linker, indicating
+// the location of various points in the "Global Section Table". This table is
+// created by the linker via the Code Red managed linker script mechanism. It
+// contains the load address, execution address and length of each RW data
+// section and the execution and length of each BSS (zero initialized) section.
+//*****************************************************************************
+extern unsigned int __data_section_table;
+extern unsigned int __data_section_table_end;
+extern unsigned int __bss_section_table;
+extern unsigned int __bss_section_table_end;
+
+//*****************************************************************************
+// Reset entry point for your code.
+// Sets up a simple runtime environment and initializes the C/C++
+// library.
+//*****************************************************************************
+__attribute__ ((section(".after_vectors")))
+void
+ResetISR(void) {
+
+    //
+    // Copy the data sections from flash to SRAM.
+    //
+    unsigned int LoadAddr, ExeAddr, SectionLen;
+    unsigned int *SectionTableAddr;
+
+    // Load base address of Global Section Table
+    SectionTableAddr = &__data_section_table;
+
+    // Copy the data sections from flash to SRAM.
+    while (SectionTableAddr < &__data_section_table_end) {
+        LoadAddr = *SectionTableAddr++;
+        ExeAddr = *SectionTableAddr++;
+        SectionLen = *SectionTableAddr++;
+        data_init(LoadAddr, ExeAddr, SectionLen);
+    }
+    // At this point, SectionTableAddr = &__bss_section_table;
+    // Zero fill the bss segment
+    while (SectionTableAddr < &__bss_section_table_end) {
+        ExeAddr = *SectionTableAddr++;
+        SectionLen = *SectionTableAddr++;
+        bss_init(ExeAddr, SectionLen);
+    }
+
+#if defined (__USE_CMSIS) || defined (__USE_LPCOPEN)
+    SystemInit();
+#endif
+
+#if defined (__cplusplus)
+    //
+    // Call C++ library initialisation
+    //
+    __libc_init_array();
+#endif
+
+#if defined (__REDLIB__)
+    // Call the Redlib library, which in turn calls main()
+    __main() ;
+#else
+    main();
+#endif
+
+    //
+    // main() shouldn't return, but if it does, we'll just enter an infinite loop
+    //
+    while (1) {
+        ;
+    }
+}
+
+//*****************************************************************************
+// Default exception handlers. Override the ones here by defining your own
+// handler routines in your application code.
+//*****************************************************************************
+__attribute__ ((section(".after_vectors")))
+void NMI_Handler(void)
+{ while(1) {}
+}
+
+__attribute__ ((section(".after_vectors")))
+void HardFault_Handler(void)
+{ while(1) {}
+}
+
+__attribute__ ((section(".after_vectors")))
+void MemManage_Handler(void)
+{ while(1) {}
+}
+
+__attribute__ ((section(".after_vectors")))
+void BusFault_Handler(void)
+{ while(1) {}
+}
+
+__attribute__ ((section(".after_vectors")))
+void UsageFault_Handler(void)
+{ while(1) {}
+}
+
+__attribute__ ((section(".after_vectors")))
+void SVC_Handler(void)
+{ while(1) {}
+}
+
+__attribute__ ((section(".after_vectors")))
+void DebugMon_Handler(void)
+{ while(1) {}
+}
+
+__attribute__ ((section(".after_vectors")))
+void PendSV_Handler(void)
+{ while(1) {}
+}
+
+__attribute__ ((section(".after_vectors")))
+void SysTick_Handler(void)
+{ while(1) {}
+}
+
+//*****************************************************************************
+//
+// Processor ends up here if an unexpected interrupt occurs or a specific
+// handler is not present in the application code.
+//
+//*****************************************************************************
+__attribute__ ((section(".after_vectors")))
+void IntDefaultHandler(void)
+{ while(1) {}
+}

hw/bsp/lpcxpresso1769/lpc1769.ld

@@ -0,0 +1,184 @@
+/*
+ * GENERATED FILE - DO NOT EDIT
+ * (c) Code Red Technologies Ltd, 2008-2013
+ * (c) NXP Semiconductors 2013-2019
+ * Generated linker script file for LPC1769
+ * Created from linkscript.ldt by FMCreateLinkLibraries
+ * Using Freemarker v2.3.23
+ * MCUXpresso IDE v10.2.1 [Build 795] [2018-07-25] on May 14, 2019 6:39:29 PM
+ */
+
+MEMORY
+{
+  /* Define each memory region */
+  MFlash512 (rx) : ORIGIN = 0x0, LENGTH = 0x80000 /* 512K bytes (alias Flash) */  
+  RamLoc32 (rwx) : ORIGIN = 0x10000000, LENGTH = 0x8000 /* 32K bytes (alias RAM) */  
+  RamAHB32 (rwx) : ORIGIN = 0x2007c000, LENGTH = 0x8000 /* 32K bytes (alias RAM2) */  
+}
+
+  /* Define a symbol for the top of each memory region */
+  __base_MFlash512 = 0x0  ; /* MFlash512 */  
+  __base_Flash = 0x0 ; /* Flash */  
+  __top_MFlash512 = 0x0 + 0x80000 ; /* 512K bytes */  
+  __top_Flash = 0x0 + 0x80000 ; /* 512K bytes */  
+  __base_RamLoc32 = 0x10000000  ; /* RamLoc32 */  
+  __base_RAM = 0x10000000 ; /* RAM */  
+  __top_RamLoc32 = 0x10000000 + 0x8000 ; /* 32K bytes */  
+  __top_RAM = 0x10000000 + 0x8000 ; /* 32K bytes */  
+  __base_RamAHB32 = 0x2007c000  ; /* RamAHB32 */  
+  __base_RAM2 = 0x2007c000 ; /* RAM2 */  
+  __top_RamAHB32 = 0x2007c000 + 0x8000 ; /* 32K bytes */  
+  __top_RAM2 = 0x2007c000 + 0x8000 ; /* 32K bytes */  
+
+ENTRY(ResetISR)
+
+SECTIONS
+{
+    /* MAIN TEXT SECTION */
+    .text : ALIGN(4)
+    {
+        FILL(0xff)
+        __vectors_start__ = ABSOLUTE(.) ;
+        KEEP(*(.isr_vector))
+        /* Global Section Table */
+        . = ALIGN(4) ;
+        __section_table_start = .;
+        __data_section_table = .;
+        LONG(LOADADDR(.data));
+        LONG(    ADDR(.data));
+        LONG(  SIZEOF(.data));
+        LONG(LOADADDR(.data_RAM2));
+        LONG(    ADDR(.data_RAM2));
+        LONG(  SIZEOF(.data_RAM2));
+        __data_section_table_end = .;
+        __bss_section_table = .;
+        LONG(    ADDR(.bss));
+        LONG(  SIZEOF(.bss));
+        LONG(    ADDR(.bss_RAM2));
+        LONG(  SIZEOF(.bss_RAM2));
+        __bss_section_table_end = .;
+        __section_table_end = . ;
+        /* End of Global Section Table */
+
+        *(.after_vectors*)
+
+    } > MFlash512
+
+    .text : ALIGN(4)
+    {
+       *(.text*)
+       *(.rodata .rodata.* .constdata .constdata.*)
+       . = ALIGN(4);
+    } > MFlash512
+    /*
+     * for exception handling/unwind - some Newlib functions (in common
+     * with C++ and STDC++) use this. 
+     */
+    .ARM.extab : ALIGN(4) 
+    {
+        *(.ARM.extab* .gnu.linkonce.armextab.*)
+    } > MFlash512
+
+    __exidx_start = .;
+
+    .ARM.exidx : ALIGN(4)
+    {
+        *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+    } > MFlash512
+    __exidx_end = .;
+
+    _etext = .;
+        
+    /* DATA section for RamAHB32 */
+
+    .data_RAM2 : ALIGN(4)
+    {
+        FILL(0xff)
+        PROVIDE(__start_data_RAM2 = .) ;
+        *(.ramfunc.$RAM2)
+        *(.ramfunc.$RamAHB32)
+        *(.data.$RAM2*)
+        *(.data.$RamAHB32*)
+        . = ALIGN(4) ;
+        PROVIDE(__end_data_RAM2 = .) ;
+     } > RamAHB32 AT>MFlash512
+    /* MAIN DATA SECTION */
+    .uninit_RESERVED : ALIGN(4)
+    {
+        KEEP(*(.bss.$RESERVED*))
+        . = ALIGN(4) ;
+        _end_uninit_RESERVED = .;
+    } > RamLoc32
+
+    /* Main DATA section (RamLoc32) */
+    .data : ALIGN(4)
+    {
+       FILL(0xff)
+       _data = . ;
+       *(vtable)
+       *(.ramfunc*)
+       *(.data*)
+       . = ALIGN(4) ;
+       _edata = . ;
+    } > RamLoc32 AT>MFlash512
+
+    /* BSS section for RamAHB32 */
+    .bss_RAM2 : ALIGN(4)
+    {
+       PROVIDE(__start_bss_RAM2 = .) ;
+       *(.bss.$RAM2*)
+       *(.bss.$RamAHB32*)
+       . = ALIGN (. != 0 ? 4 : 1) ; /* avoid empty segment */
+       PROVIDE(__end_bss_RAM2 = .) ;
+    } > RamAHB32 
+
+    /* MAIN BSS SECTION */
+    .bss : ALIGN(4)
+    {
+        _bss = .;
+        *(.bss*)
+        *(COMMON)
+        . = ALIGN(4) ;
+        _ebss = .;
+        PROVIDE(end = .);
+    } > RamLoc32
+
+    /* NOINIT section for RamAHB32 */
+    .noinit_RAM2 (NOLOAD) : ALIGN(4)
+    {
+       *(.noinit.$RAM2*)
+       *(.noinit.$RamAHB32*)
+       . = ALIGN(4) ;
+    } > RamAHB32 
+
+    /* DEFAULT NOINIT SECTION */
+    .noinit (NOLOAD): ALIGN(4)
+    {
+        _noinit = .;
+        *(.noinit*) 
+         . = ALIGN(4) ;
+        _end_noinit = .;
+    } > RamLoc32
+    PROVIDE(_pvHeapStart = DEFINED(__user_heap_base) ? __user_heap_base : .);
+    PROVIDE(_vStackTop = DEFINED(__user_stack_top) ? __user_stack_top : __top_RamLoc32 - 0);
+
+    /* ## Create checksum value (used in startup) ## */
+    PROVIDE(__valid_user_code_checksum = 0 - 
+                                         (_vStackTop 
+                                         + (ResetISR + 1) 
+                                         + (NMI_Handler + 1) 
+                                         + (HardFault_Handler + 1) 
+                                         + (( DEFINED(MemManage_Handler) ? MemManage_Handler : 0 ) + 1)   /* MemManage_Handler may not be defined */
+                                         + (( DEFINED(BusFault_Handler) ? BusFault_Handler : 0 ) + 1)     /* BusFault_Handler may not be defined */
+                                         + (( DEFINED(UsageFault_Handler) ? UsageFault_Handler : 0 ) + 1) /* UsageFault_Handler may not be defined */
+                                         ) );
+
+    /* Provide basic symbols giving location and size of main text
+     * block, including initial values of RW data sections. Note that
+     * these will need extending to give a complete picture with
+     * complex images (e.g multiple Flash banks).
+     */
+    _image_start = LOADADDR(.text);
+    _image_end = LOADADDR(.data) + SIZEOF(.data);
+    _image_size = _image_end - _image_start;
+}