Blackfin: small cpu init optimization while setting interrupt mask

Use the sti instruction to set the initial interrupt mask rather than
banging on the core IMASK MMR to save both space and time.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/cpu/blackfin/start.S b/cpu/blackfin/start.S
index f351fab1706c093d9fb305641e1e8a379be34df6..9975a0c62f575c94ffee7ddeadf4fcb24295537e 100644 (file)
--- a/cpu/blackfin/start.S
+++ b/cpu/blackfin/start.S
@@ -193,11 +193,8 @@ ENTRY(_start)
        p1.l = .Lenable_nested;
        p1.h = .Lenable_nested;
        [p0] = p1;
-       p2.l = LO(IMASK);
-       p2.h = HI(IMASK);
-       p3.l = LO(EVT_IVG15);
-       p3.h = HI(EVT_IVG15);
-       [p2] = p3;
+       r7 = EVT_IVG15 (z);
+       sti r7;
        raise 15;
        p4.l = .LWAIT_HERE;
        p4.h = .LWAIT_HERE;