Fixing bug error 0x8001011F

Author: panyz0725@thundersoft.com

targets/TARGET_TT/TARGET_TT_M4G9/device/TOOLCHAIN_GCC_ARM/tmpm4g9f15fg.ld

@@ -10,6 +10,12 @@
   #define MBED_APP_SIZE 0x180000
 #endif
 
+#if !defined(MBED_BOOT_STACK_SIZE)
+    #define MBED_BOOT_STACK_SIZE 0x400
+#endif
+
+STACK_SIZE = MBED_BOOT_STACK_SIZE;
+
 MEMORY
 {
   FLASH (rx) : ORIGIN = MBED_APP_START, LENGTH = MBED_APP_SIZE
@@ -185,6 +191,7 @@ SECTIONS
 		__end__ = .;
 		end = __end__;
 		KEEP(*(.heap*))
+		. = ORIGIN(RAM) + LENGTH(RAM) - STACK_SIZE;
 		__HeapLimit = .;
 	} > RAM
 
@@ -199,7 +206,7 @@ SECTIONS
 	/* 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);
+	__StackLimit = __StackTop - STACK_SIZE;
 	PROVIDE(__stack = __StackTop);
 
 	/* Check if data + heap + stack exceeds RAM limit */