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powepc/booke: Separate out E.HV check and ivor setup code.

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Move the E.HV check and CPU_FTR_EMB_HV flag manipulation to the cpu setup
code.  Create a separate routine for E.HV ivors setup.

Signed-off-by: Varun Sethi <Varun.Sethi@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Varun Sethi 2012-07-09 18:25:31 +05:30 committed by Kumar Gala
parent d0832a7507
commit 7e0f4872a3
2 changed files with 30 additions and 17 deletions
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29
arch/powerpc/kernel/cpu_setup_fsl_booke.S
View File

@ -16,6 +16,8 @@
#include <asm/processor.h>
#include <asm/cputable.h>
#include <asm/ppc_asm.h>
#include <asm/mmu-book3e.h>
#include <asm/asm-offsets.h>
_GLOBAL(__e500_icache_setup)
mfspr r0, SPRN_L1CSR1
@ -73,12 +75,33 @@ _GLOBAL(__setup_cpu_e500v2)
mtlr r4
blr
_GLOBAL(__setup_cpu_e500mc)
mr r5, r4
mflr r4
mflr r5
bl __e500_icache_setup
bl __e500_dcache_setup
bl __setup_e500mc_ivors
mtlr r4
/*
* We only want to touch IVOR38-41 if we're running on hardware
* that supports category E.HV. The architectural way to determine
* this is MMUCFG[LPIDSIZE].
*/
mfspr r3, SPRN_MMUCFG
rlwinm. r3, r3, 0, MMUCFG_LPIDSIZE
beq 1f
bl __setup_ehv_ivors
b 2f
1:
lwz r3, CPU_SPEC_FEATURES(r4)
/* We need this check as cpu_setup is also called for
* the secondary cores. So, if we have already cleared
* the feature on the primary core, avoid doing it on the
* secondary core.
*/
andis. r6, r3, CPU_FTR_EMB_HV@h
beq 2f
rlwinm r3, r3, 0, ~CPU_FTR_EMB_HV
stw r3, CPU_SPEC_FEATURES(r4)
2:
mtlr r5
blr
#endif
/* Right now, restore and setup are the same thing */

18
arch/powerpc/kernel/head_fsl_booke.S
View File

@ -895,15 +895,11 @@ _GLOBAL(__setup_e500mc_ivors)
mtspr SPRN_IVOR36,r3
li r3,CriticalDoorbell@l
mtspr SPRN_IVOR37,r3
sync
blr
/*
* We only want to touch IVOR38-41 if we're running on hardware
* that supports category E.HV. The architectural way to determine
* this is MMUCFG[LPIDSIZE].
*/
mfspr r3, SPRN_MMUCFG
andis. r3, r3, MMUCFG_LPIDSIZE@h
beq no_hv
/* setup ehv ivors for */
_GLOBAL(__setup_ehv_ivors)
li r3,GuestDoorbell@l
mtspr SPRN_IVOR38,r3
li r3,CriticalGuestDoorbell@l
@ -912,14 +908,8 @@ _GLOBAL(__setup_e500mc_ivors)
mtspr SPRN_IVOR40,r3
li r3,Ehvpriv@l
mtspr SPRN_IVOR41,r3
skip_hv_ivors:
sync
blr
no_hv:
lwz r3, CPU_SPEC_FEATURES(r5)
rlwinm r3, r3, 0, ~CPU_FTR_EMB_HV
stw r3, CPU_SPEC_FEATURES(r5)
b skip_hv_ivors
#ifdef CONFIG_SPE
/*