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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-03-01 15:46:09 +1100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-04-20 11:03:24 +1000 |
| commit | b144871cb5f2c268e94258ae8f1ec810db2e1120 (patch) | |
| tree | c29295c70bccde6487992fe5c4c8bac87bd4e867 | |
| parent | 895796a8ab548fe03b6fea410dcb1b86e1913708 (diff) | |
| download | linux-3.10-b144871cb5f2c268e94258ae8f1ec810db2e1120.tar.gz linux-3.10-b144871cb5f2c268e94258ae8f1ec810db2e1120.tar.bz2 linux-3.10-b144871cb5f2c268e94258ae8f1ec810db2e1120.zip | |
powerpc: Initialize TLB and LPID register on HV mode Power7
In case entry from the bootloader isn't "clean"
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
| -rw-r--r-- | arch/powerpc/kernel/cpu_setup_power7.S | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/cpu_setup_power7.S b/arch/powerpc/kernel/cpu_setup_power7.S index 2390f6f7c47..4f9a93fcfe0 100644 --- a/arch/powerpc/kernel/cpu_setup_power7.S +++ b/arch/powerpc/kernel/cpu_setup_power7.S @@ -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 |