添加bsp_init,sys_api段

Project/stm32f429ighx_flash.ld

@@ -126,7 +126,7 @@ SECTIONS
   .sys_api :{
     . = ALIGN(4);
     sys_api_start = .;
-    *(.sys_api)
+    KEEP(*(.sys_api))
     sys_api_end = .;
     . = ALIGN(4);
   } >FLASH
@@ -134,7 +134,7 @@ SECTIONS
   .bsp_init :{
     . = ALIGN(4);
     bsp_init_start = .;
-    *(bsp_init)
+    KEEP(*(.bsp_init))
     bsp_init_end = .;
     . = ALIGN(4);
   } >FLASH
@@ -173,7 +173,7 @@ SECTIONS
   _sidata = LOADADDR(.data);
 
   /* Initialized data sections goes into RAM, load LMA copy after code */
-  .data : 
+  .data :
   {
     . = ALIGN(4);
     _sdata = .;        /* create a global symbol at data start */
@@ -186,11 +186,11 @@ SECTIONS
 
   _siccmram = LOADADDR(.ccmram);
 
-  /* CCM-RAM section 
-  * 
-  * IMPORTANT NOTE! 
+  /* CCM-RAM section
+  *
+  * IMPORTANT NOTE!
   * If initialized variables will be placed in this section,
-  * the startup code needs to be modified to copy the init-values.  
+  * the startup code needs to be modified to copy the init-values.
   */
   .ccmram :
   {
@@ -198,12 +198,12 @@ SECTIONS
     _sccmram = .;       /* create a global symbol at ccmram start */
     *(.ccmram)
     *(.ccmram*)
-    
+
     . = ALIGN(4);
     _eccmram = .;       /* create a global symbol at ccmram end */
   } >CCMRAM AT> FLASH
 
-  
+
   /* Uninitialized data section */
   . = ALIGN(4);
   .bss :
@@ -231,7 +231,7 @@ SECTIONS
     . = ALIGN(8);
   } >RAM
 
-  
+
 
   /* Remove information from the standard libraries */
   /DISCARD/ :