diff options
| author | Scott Wood <scottwood@freescale.com> | 2009-08-20 17:45:05 -0500 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2009-09-15 21:30:08 -0500 |
| commit | dcc87dd58db466caa2d66755c5ec9455edf42fe8 (patch) | |
| tree | a1d1174bd31fc211141eb7bc8e18354219f24686 /cpu/mpc85xx/tlb.c | |
| parent | 1b72dbecca2d7ad7a21c92d80227daa2d8ec5a57 (diff) | |
| download | u-boot-imx-dcc87dd58db466caa2d66755c5ec9455edf42fe8.zip u-boot-imx-dcc87dd58db466caa2d66755c5ec9455edf42fe8.tar.gz u-boot-imx-dcc87dd58db466caa2d66755c5ec9455edf42fe8.tar.bz2 | |
ppc/85xx: Ensure that MAS8 is zero when writing TLB entries.
Its reset value is random, and we sometimes read uninitialized TLB
arrays. Make sure that we don't retain MAS8 from reading such an entry
if the VF bit in MAS8 is set, attempts to use the mapping will trap.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Diffstat (limited to 'cpu/mpc85xx/tlb.c')
| -rw-r--r-- | cpu/mpc85xx/tlb.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/cpu/mpc85xx/tlb.c b/cpu/mpc85xx/tlb.c index 0497a29..03c2449 100644 --- a/cpu/mpc85xx/tlb.c +++ b/cpu/mpc85xx/tlb.c @@ -51,6 +51,9 @@ void set_tlb(u8 tlb, u32 epn, u64 rpn, #ifdef CONFIG_ENABLE_36BIT_PHYS mtspr(MAS7, _mas7); #endif +#ifdef CONFIG_SYS_BOOK3E_HV + mtspr(MAS8, 0); +#endif asm volatile("isync;msync;tlbwe;isync"); #ifdef CONFIG_ADDR_MAP |