diff options
| author | David S. Miller <davem@sunset.davemloft.net> | 2006-02-07 16:09:12 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-03-20 01:11:54 -0800 |
| commit | 8591e3027235d6d11b958e43379f2ee7b7114841 (patch) | |
| tree | ce3f036ac64e20f7d75bae04e5362c97bc9228e6 /arch/sparc64/kernel/head.S | |
| parent | df7d6aec96ab98cb182dd5138a85bdc363a9bf0d (diff) | |
| download | linux-8591e3027235d6d11b958e43379f2ee7b7114841.tar.gz | |
[SPARC64]: Niagara copy/clear page.
Happily we have no D-cache aliasing issues on these
chips, so the implementation is very straightforward.
Add a stub in bootup which will be where the patching
calls will be made for niagara/sun4v/hypervisor.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel/head.S')
| -rw-r--r-- | arch/sparc64/kernel/head.S | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/sparc64/kernel/head.S b/arch/sparc64/kernel/head.S index 03fc0b5b1d98..f04f7391f236 100644 --- a/arch/sparc64/kernel/head.S +++ b/arch/sparc64/kernel/head.S @@ -316,6 +316,24 @@ sun4u_init: ba,pt %xcc, spitfire_tlb_fixup nop + /* XXX Nothing branches to here yet, when %ver register indicates + * XXX Niagara we should do this. + */ +niagara_tlb_fixup: + mov 3, %g2 /* Set TLB type to hypervisor. */ + sethi %hi(tlb_type), %g1 + stw %g2, [%g1 + %lo(tlb_type)] + + /* Patch copy/clear ops. */ + call niagara_patch_copyops + nop + call niagara_patch_pageops + nop + + /* Patch TLB/cache ops. */ + call hypervisor_patch_cachetlbops + nop + cheetah_tlb_fixup: mov 2, %g2 /* Set TLB type to cheetah+. */ BRANCH_IF_CHEETAH_PLUS_OR_FOLLOWON(g1,g7,1f) |