X-Git-Url: https://robinkrens.nl/gitweb/?a=blobdiff_plain;f=link.ld;h=63f173d8bb676df43673ecdba0603f6d147e4fc9;hb=9f7dfa3d2de5600111eb5c09dc1727b58a30be18;hp=1f6b5f663afdb58dc975c8a13913e4bede98cdc3;hpb=41d25ed67df8b6acd6126c41c8b0882586db0b0d;p=cortex-from-scratch

diff --git a/link.ld b/link.ld
index 1f6b5f6..63f173d 100644
--- a/link.ld
+++ b/link.ld
@@ -1,4 +1,28 @@
-/* */
+/* (CC-BY-NC-SA) ROBIN KRENS - ROBIN @ ROBINKRENS.NL
+ * 
+ * $LOG$
+ * 2019/7/20 - ROBIN KRENS	
+ * Initial version 
+ * 
+ * $DESCRIPTION$
+ * Linker file for Cortex-M3 STM32 based boards
+ * Boards have similar FLASH and SRAM ORIGINs
+ * LENGTHs differs of course.
+ * 
+ * _start flag is the first procedure to be 
+ * executed (linked to beginning of FLASH at 
+ * 0x08000000). The procedure should do some
+ * basic things, such as set up the stack and
+ * reset and hard fault handler (see start.asm)
+ * *
+ * _endofbss flag is used to calculate the end 
+ * of .bss and the start of (a possible) kernel
+ * heap
+ *
+ * */
+
+KHEAP_SIZE = 0x100; 
+
 MEMORY
 {
 	FLASH (xr) : ORIGIN = 0x08000000, LENGTH = 512K
@@ -14,16 +38,23 @@ SECTIONS
 	{
 		/* (.vector_table */
 		*(.text)
-		*(.rodata)
+		*(.rodata) 
+		data_lma = .;
 	}
         . = 0x20000000;	
-	.data :  
+	data_vma = .;
+	.data : AT (data_lma)
 	{
 		*(.data)
 	} 
+	data_end = .;
 	.bss : ALIGN(4) 
 	{
 		*(.bss)
 	}
        	_endofbss = .;	
+	_beginofheap = .;
+	. = . + KHEAP_SIZE;
+	. = ALIGN(8);
+	_endofheap = .;
 }