Patchwork [08/14] powerpc: Move initial mfspr LPCR out of __init_LPCR

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Submitter Michael Neuling
Date Nov. 9, 2012, 6:19 a.m.
Message ID <1352441953-29096-9-git-send-email-mikey@neuling.org>
Download mbox | patch
Permalink /patch/197936/
State Accepted, archived
Commit f7c32c24f5788798f17d4e520a5d238335a859cb
Headers show

Comments

Michael Neuling - Nov. 9, 2012, 6:19 a.m.
We want to change what's initially set in the LPCR, so start by taking the move
from LPCR out of the function and into the caller.

Signed-off-by: Matt Evans <matt@ozlabs.org>
Signed-off-by: Michael Neuling <mikey@neuling.org>
---
 arch/powerpc/kernel/cpu_setup_power.S |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

Patch

diff --git a/arch/powerpc/kernel/cpu_setup_power.S b/arch/powerpc/kernel/cpu_setup_power.S
index a92101d..52dd033 100644
--- a/arch/powerpc/kernel/cpu_setup_power.S
+++ b/arch/powerpc/kernel/cpu_setup_power.S
@@ -27,6 +27,7 @@  _GLOBAL(__setup_cpu_power7)
 	beqlr
 	li	r0,0
 	mtspr	SPRN_LPID,r0
+	mfspr	r3,SPRN_LPCR
 	bl	__init_LPCR
 	bl	__init_TLB
 	mtlr	r11
@@ -39,6 +40,7 @@  _GLOBAL(__restore_cpu_power7)
 	beqlr
 	li	r0,0
 	mtspr	SPRN_LPID,r0
+	mfspr	r3,SPRN_LPCR
 	bl	__init_LPCR
 	bl	__init_TLB
 	mtlr	r11
@@ -51,6 +53,7 @@  _GLOBAL(__setup_cpu_power8)
 	beqlr
 	li	r0,0
 	mtspr	SPRN_LPID,r0
+	mfspr	r3,SPRN_LPCR
 	bl	__init_LPCR
 	bl	__init_TLB
 	mtlr	r11
@@ -63,6 +66,7 @@  _GLOBAL(__restore_cpu_power8)
 	beqlr
 	li	r0,0
 	mtspr	SPRN_LPID,r0
+	mfspr   r3,SPRN_LPCR
 	bl	__init_LPCR
 	bl	__init_TLB
 	mtlr	r11
@@ -81,6 +85,7 @@  __init_hvmode_206:
 
 __init_LPCR:
 	/* Setup a sane LPCR:
+	 *   Called with initial LPCR in R3
 	 *
 	 *   LPES = 0b01 (HSRR0/1 used for 0x500)
 	 *   PECE = 0b111
@@ -91,7 +96,6 @@  __init_LPCR:
 	 *
 	 * Other bits untouched for now
 	 */
-	mfspr	r3,SPRN_LPCR
 	li	r5,1
 	rldimi	r3,r5, LPCR_LPES_SH, 64-LPCR_LPES_SH-2
 	ori	r3,r3,(LPCR_PECE0|LPCR_PECE1|LPCR_PECE2)