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powerpc: Initialize TLB and LPID register on HV mode Power7

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In case entry from the bootloader isn't "clean"

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Benjamin Herrenschmidt 2011-03-01 15:46:09 +11:00
parent 895796a8ab
commit b144871cb5
1 changed files with 18 additions and 0 deletions
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18
arch/powerpc/kernel/cpu_setup_power7.S
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@ -25,7 +25,10 @@ _GLOBAL(__setup_cpu_power7)
bl __init_hvmode_206
mtlr r11
beqlr
li r0,0
mtspr SPRN_LPID,r0
bl __init_LPCR
bl __init_TLB
mtlr r11
blr
@ -34,7 +37,10 @@ _GLOBAL(__restore_cpu_power7)
mfmsr r3
rldicl. r0,r3,4,63
beqlr
li r0,0
mtspr SPRN_LPID,r0
bl __init_LPCR
bl __init_TLB
mtlr r11
blr
@ -71,3 +77,15 @@ __init_LPCR:
mtspr SPRN_LPCR,r3
isync
blr
__init_TLB:
/* Clear the TLB */
li r6,128
mtctr r6
li r7,0xc00 /* IS field = 0b11 */
ptesync
2: tlbiel r7
addi r7,r7,0x1000
bdnz 2b
ptesync
1: blr