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powerpc/book3e-64: Wait til generic_calibrate_decr to enable decrementer

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Match what we do on 32-bit Book-E processors and enable the decrementer
in generic_calibrate_decr.  We need to make sure we disable the
decrementer early in boot since we currently use lazy (soft) interrupt
on 64-bit Book-E and possible get a decrementer exception before we
are ready for it.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Kumar Gala 2009-08-18 19:08:31 +00:00 committed by Benjamin Herrenschmidt
parent f45c4486f7
commit 6c188829d2
1 changed files with 4 additions and 2 deletions
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6
arch/powerpc/kernel/exceptions-64e.S
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@ -774,9 +774,11 @@ _STATIC(init_thread_book3e)
/* Make sure interrupts are off */
wrteei 0
/* disable watchdog and FIT and enable DEC interrupts */
lis r3,TCR_DIE@h
/* disable all timers and clear out status */
li r3,0
mtspr SPRN_TCR,r3
mfspr r3,SPRN_TSR
mtspr SPRN_TSR,r3
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