From: Kumar Gala <galak@kernel.crashing.org>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linuxppc-dev@ozlabs.org
Subject: [PATCH 3/5] powerpc/book3e-64: Wait til generic_calibrate_decr to enable decrementer
Date: Wed, 19 Aug 2009 00:08:31 -0500 [thread overview]
Message-ID: <1250658513-13009-3-git-send-email-galak@kernel.crashing.org> (raw)
In-Reply-To: <1250658513-13009-2-git-send-email-galak@kernel.crashing.org>
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>
---
arch/powerpc/kernel/exceptions-64e.S | 6 ++++--
1 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S
index 695d484..3611b0e 100644
--- a/arch/powerpc/kernel/exceptions-64e.S
+++ b/arch/powerpc/kernel/exceptions-64e.S
@@ -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
blr
--
1.6.0.6
next prev parent reply other threads:[~2009-08-19 5:08 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-19 5:08 [PATCH 1/5] powerpc/mm: Add MMU features for TLB reservation & Paired MAS registers Kumar Gala
2009-08-19 5:08 ` [PATCH 2/5] powerpc/book3e-64: Move the default cpu table entry Kumar Gala
2009-08-19 5:08 ` Kumar Gala [this message]
2009-08-19 5:08 ` [PATCH 4/5] powerpc/book3e-64: Add helper function to setup IVORs Kumar Gala
2009-08-19 5:08 ` [PATCH 5/5] powerpc/book3e-64: Add support to initial_tlb_book3e for non-HES TLB Kumar Gala
2009-08-19 7:25 ` [PATCH 1/5] powerpc/mm: Add MMU features for TLB reservation & Paired MAS registers Benjamin Herrenschmidt
2009-08-19 21:37 ` Kumar Gala
2009-08-20 0:43 ` Benjamin Herrenschmidt
2009-08-24 16:12 ` Kumar Gala
2009-08-25 1:08 ` Benjamin Herrenschmidt
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