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| author | David S. Miller <davem@sunset.davemloft.net> | 2006-02-09 10:52:44 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-03-20 09:12:03 (GMT) |
| commit | d82ace7dc4073b090a55b9740700e32b9a9ae302 (patch) | |
| tree | d5aa8e10664b05bbfe31eacf95e2066c03cab102 /arch/sparc64/kernel/cpu.c | |
| parent | 1d2f1f90a1e004b0c1b8a73ed4394a93f09104b3 (diff) | |
| download | linux-fsl-qoriq-d82ace7dc4073b090a55b9740700e32b9a9ae302.tar.xz | |
[SPARC64]: Detect sun4v early in boot process.
We look for "SUNW,sun4v" in the 'compatible' property
of the root OBP device tree node.
Protect every %ver register access, to make sure it is
not touched on sun4v, as %ver is hyperprivileged there.
Lock kernel TLB entries using hypervisor calls instead of
calls into OBP.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel/cpu.c')
| -rw-r--r-- | arch/sparc64/kernel/cpu.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/sparc64/kernel/cpu.c b/arch/sparc64/kernel/cpu.c index 00eed88..c7a4fb3 100644 --- a/arch/sparc64/kernel/cpu.c +++ b/arch/sparc64/kernel/cpu.c @@ -71,6 +71,12 @@ void __init cpu_probe(void) unsigned long ver, fpu_vers, manuf, impl, fprs; int i; + if (tlb_type == hypervisor) { + sparc_cpu_type = "UltraSparc T1 (Niagara)"; + sparc_fpu_type = "UltraSparc T1 integrated FPU"; + return; + } + fprs = fprs_read(); fprs_write(FPRS_FEF); __asm__ __volatile__ ("rdpr %%ver, %0; stx %%fsr, [%1]" |