Add heap section to linker file

Author: deepikabhavnani

targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_MIMXRT1050/device/TOOLCHAIN_ARM_STD/MIMXRT1052xxxxx.sct

@@ -138,14 +138,16 @@ LR_IROM1 m_flash_config_start m_text_start+m_text_size-m_flash_config_start {
   VECTOR_RAM m_interrupts_start EMPTY 0 {
   }
 #endif
-  RW_m_data m_data_start m_data_size-Stack_Size-Heap_Size { ; RW data
+  RW_m_data m_data_start m_data_size { ; RW data
     .ANY (+RW +ZI)
     *(m_usb_dma_init_data)
     *(m_usb_dma_noninit_data)
   }
-  RW_IRAM1 +0 EMPTY Heap_Size {    ; Heap region growing up
+  RW_IRAM1 ImageLimit(RW_m_data)  {
   }
-  ARM_LIB_STACK m_data_start+m_data_size EMPTY -Stack_Size { ; Stack region growing down
+  ARM_LIB_HEAP AlignExpr(+0, 16) EMPTY (m_data_start + m_data_size - Stack_Size - AlignExpr(ImageLimit(RW_IRAM1), 16)) {
+  }
+  ARM_LIB_STACK m_data_start+m_data_size EMPTY -Stack_Size  { ; Stack region growing down
   }
   RW_m_ram_text m_text2_start UNINIT m_text2_size { ; load address = execution address
     * (RamFunction)

targets/TARGET_NXP/mbed_rtx.h

@@ -98,10 +98,10 @@
 #elif defined(TARGET_MIMXRT1050_EVK)
 
 #if defined(__ARMCC_VERSION)
-    extern uint32_t               Image$$RW_IRAM1$$ZI$$Base[];
-    extern uint32_t               Image$$RW_IRAM1$$ZI$$Length[];
-    #define HEAP_START            Image$$RW_IRAM1$$ZI$$Base
-    #define HEAP_SIZE             Image$$RW_IRAM1$$ZI$$Length
+extern uint32_t               Image$$ARM_LIB_HEAP$$ZI$$Base[];
+extern uint32_t               Image$$ARM_LIB_HEAP$$ZI$$Length[];
+#define HEAP_START            Image$$ARM_LIB_HEAP$$ZI$$Base
+#define HEAP_SIZE             Image$$ARM_LIB_HEAP$$ZI$$Length
 #elif defined(__GNUC__)
     /* No region declarations needed */
 #elif defined(__ICCARM__)