powerpc: Setup in HFSCR for POWER8
Setup the HFSCR (Hypervisor Facility Status and Control Register) for POWER8 when running HV=1. The HFSCR is the same as the FSCR except it's for hypervisors. It controls the available of various facilities in OS and userspace levels. It also indicates the cause of a hypervisor facility unavailable interrupt (although we are not using this here). This patch sets the facilities Linux knows about incase the firmware doesn't. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
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@ -57,6 +57,7 @@ _GLOBAL(__setup_cpu_power8)
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mfspr r3,SPRN_LPCR
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oris r3, r3, LPCR_AIL_3@h
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bl __init_LPCR
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bl __init_HFSCR
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bl __init_TLB
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mtlr r11
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blr
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@ -72,6 +73,7 @@ _GLOBAL(__restore_cpu_power8)
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mfspr r3,SPRN_LPCR
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oris r3, r3, LPCR_AIL_3@h
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bl __init_LPCR
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bl __init_HFSCR
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bl __init_TLB
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mtlr r11
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blr
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@ -120,6 +122,12 @@ __init_FSCR:
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mtspr SPRN_FSCR,r3
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blr
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__init_HFSCR:
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mfspr r3,SPRN_HFSCR
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ori r3,r3,HFSCR_TAR|HFSCR_TM|HFSCR_DSCR|HFSCR_VECVSX|HFSCR_FP
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mtspr SPRN_HFSCR,r3
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blr
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__init_TLB:
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/* Clear the TLB */
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li r6,128
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