blue-pill: fix linker scripts and asm led turnon

blue-pill/draugr/startup.s

@@ -9,6 +9,8 @@
 .cpu cortex-m3
 .thumb
 
+.section	.text
+.global vectors
 vectors:
 .align	2
 .long	0x20005000		/* stack pointer points to top of SRAM */

blue-pill/draugr/stm32f103.ld

@@ -1,11 +1,18 @@
 MEMORY
 {
-    flash (rx) : ORIGIN = 0x00000000, LENGTH = 128K
+    flash (rx) : ORIGIN = 0x08000000, LENGTH = 64K
     sram (rwx) : ORIGIN = 0x20000000, LENGTH = 20K
 }
 
+EXTERN(vectors);
+ENTRY(reset_handler);
+
 SECTIONS
 {
-   .text : { *(.text*) } > flash
-   .bss  : { *(.bss*) } > sram
+	.text : {
+		*(.vectors*)
+ 		*(.text*)
+		. = ALIGN(4);
+	} > flash
+	.bss  : { *(.bss*) } > sram
 }