1 files changed, 71 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/bfin/shared/start/start.S b/c/src/lib/libbsp/bfin/shared/start/start.S
new file mode 100644
index 0000000000..7cf479fb5c
--- /dev/null
+++ b/c/src/lib/libbsp/bfin/shared/start/start.S
@@ -0,0 +1,71 @@
+
+
+#include <rtems/score/bfin.h>   
+        .section .init
+        .globl  __init
+        .type   __init,@function
+__init:
+        .section .fini
+        .globl  __fini
+        .type   __fini,@function
+__fini:
+
+
+    .text
+    .align  2
+
+    .global __start
+__start:
+
+    /* Start by setting up a stack */
+    sp.h = 0xFFB0;
+    sp.l = 0x0F00;
+    
+    /* Maybe we should zero the memory in the .bss section.  */
+
+    /* This changes to the supervisor mode */
+    p0.l = START;
+    p0.h = START;
+    p1.l = LO(EVT15);
+    p1.h = HI(EVT15);
+    
+    [P1] = P0;
+    
+    P0.h = HI(IMASK);
+    P0.l = LO(IMASK);
+    R0 = [P0];
+    /* R1.l = EVT_IVG15 & 0xFFFF; */
+    R1.l = 0x8000;
+    
+    R0 = R0 | R1;
+    
+    [P0] = R0;
+
+    RAISE 15;
+    
+    PO.l = WAIT;
+    P0.h = WAIT;
+
+    RETI = P0;
+    RTI;
+    
+    /* endless loop to wait */
+    WAIT:   
+    jump WAIT;
+    
+    START:
+    [--SP] = RETI;
+    p0.l = _boot_card;
+    p0.h = _boot_card;
+
+    call (p0);
+
+    p0.l = _exit;
+    p0.h = _exit; 
+    P3 = P4; 
+    jump    (p0)        /* Should not return.  */
+
+.global _null_isr
+_null_isr:
+    rti;
+