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| author | David S. Miller <davem@sunset.davemloft.net> | 2006-02-09 02:52:44 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-03-20 01:12:03 -0800 |
| commit | d82ace7dc4073b090a55b9740700e32b9a9ae302 (patch) | |
| tree | d5aa8e10664b05bbfe31eacf95e2066c03cab102 /include/asm-sparc64/head.h | |
| parent | 1d2f1f90a1e004b0c1b8a73ed4394a93f09104b3 (diff) | |
| download | blackbird-obmc-linux-d82ace7dc4073b090a55b9740700e32b9a9ae302.tar.gz blackbird-obmc-linux-d82ace7dc4073b090a55b9740700e32b9a9ae302.zip | |
[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 'include/asm-sparc64/head.h')
| -rw-r--r-- | include/asm-sparc64/head.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/asm-sparc64/head.h b/include/asm-sparc64/head.h index ff76c0981b63..c4ac3e87aa50 100644 --- a/include/asm-sparc64/head.h +++ b/include/asm-sparc64/head.h @@ -24,6 +24,12 @@ #define PANTHER_IMPL 0x0019 /* Ultra-IV+ */ #define SERRANO_IMPL 0x0022 /* Ultra-IIIi+ */ +#define BRANCH_IF_SUN4V(tmp1,label) \ + sethi %hi(is_sun4v), %tmp1; \ + lduw [%tmp1 + %lo(is_sun4v)], %tmp1; \ + brnz,pn %tmp1, label; \ + nop + #define BRANCH_IF_CHEETAH_BASE(tmp1,tmp2,label) \ rdpr %ver, %tmp1; \ sethi %hi(__CHEETAH_ID), %tmp2; \ |
