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Blackfin: small cpu init optimization while setting interrupt mask

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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>
This commit is contained in:
Mike Frysinger 2008-10-11 21:19:39 -04:00
parent 960922291c
commit bd33e5c613
1 changed files with 2 additions and 5 deletions
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7
cpu/blackfin/start.S
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@ -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;