From: Michael Neuling <mikey@neuling.org>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Michael Neuling <mikey@neuling.org>, linuxppc-dev@lists.ozlabs.org
Subject: [PATCH 2/2] powerpc: Setup in HFSCR for POWER8
Date: Wed, 6 Mar 2013 13:15:14 +1100 [thread overview]
Message-ID: <1362536114-9658-3-git-send-email-mikey@neuling.org> (raw)
In-Reply-To: <1362536114-9658-1-git-send-email-mikey@neuling.org>
Setup the HFSCR (Hypervisor Facility Status and Control Register) for POWER8
when running HV=1. The HFSCR is the same as the FSCR except but for
hypervisors.
This patch sets the facilities Linux knows about incase the firmware doesn't.
Signed-off-by: Michael Neuling <mikey@neuling.org>
---
arch/powerpc/kernel/cpu_setup_power.S | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/arch/powerpc/kernel/cpu_setup_power.S b/arch/powerpc/kernel/cpu_setup_power.S
index ea847ab..2e6ad11 100644
--- a/arch/powerpc/kernel/cpu_setup_power.S
+++ b/arch/powerpc/kernel/cpu_setup_power.S
@@ -57,6 +57,7 @@ _GLOBAL(__setup_cpu_power8)
mfspr r3,SPRN_LPCR
oris r3, r3, LPCR_AIL_3@h
bl __init_LPCR
+ bl __init_HFSCR
bl __init_TLB
mtlr r11
blr
@@ -72,6 +73,7 @@ _GLOBAL(__restore_cpu_power8)
mfspr r3,SPRN_LPCR
oris r3, r3, LPCR_AIL_3@h
bl __init_LPCR
+ bl __init_HFSCR
bl __init_TLB
mtlr r11
blr
@@ -120,6 +122,12 @@ __init_FSCR:
mtspr SPRN_FSCR,r3
blr
+__init_HFSCR:
+ mfspr r3,SPRN_HFSCR
+ ori r3,r3,HFSCR_TAR|HFSCR_TM|HFSCR_DSCR|HFSCR_VECVSX|HFSCR_FP
+ mtspr SPRN_HFSCR,r3
+ blr
+
__init_TLB:
/* Clear the TLB */
li r6,128
--
1.7.10.4
next prev parent reply other threads:[~2013-03-06 2:15 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-06 2:15 [PATCH 0/2] powerpc: HFSCR enablement for POWER8 Michael Neuling
2013-03-06 2:15 ` [PATCH 1/2] powerpc: Add HFSCR SPR definitions Michael Neuling
2013-03-06 2:15 ` Michael Neuling [this message]
-- strict thread matches above, loose matches on Subject: below --
2013-03-06 3:35 [PATCH 0/2] powerpc: HFSCR enablement for POWER8 Michael Neuling
2013-03-06 3:35 ` [PATCH 2/2] powerpc: Setup in HFSCR " Michael Neuling
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