提交 2a3563b0 编写于 作者: M Michael Neuling 提交者: Michael Ellerman

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: NMichael Neuling <mikey@neuling.org>
Signed-off-by: NMichael Ellerman <michael@ellerman.id.au>
上级 04b418c9
......@@ -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
......
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