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| author |   Christophe Leroy <christophe.leroy@c-s.fr> | 2019-02-21 19:08:37 +0000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2019-02-23 21:04:31 +1100 |
| commit | 6d183ca8baec983dc4208ca45ece3c36763df912 (patch) | |
| tree | c8b11436e4bfec9ad3b3a19dd934326078e454ac /arch/powerpc/platforms | |
| parent | powerpc/8xx: Map 32Mb of RAM at init. (diff) | |
| download | linux-dev-6d183ca8baec983dc4208ca45ece3c36763df912.tar.xz linux-dev-6d183ca8baec983dc4208ca45ece3c36763df912.zip | |
powerpc/wii: properly disable use of BATs when requested.
'nobats' kernel parameter or some options like CONFIG_DEBUG_PAGEALLOC
deny the use of BATS for mapping memory.
This patch makes sure that the specific wii RAM mapping function
takes it into account as well.
Fixes: de32400dd26e ("wii: use both mem1 and mem2 as ram")
Cc: stable@vger.kernel.org
Reviewed-by: Jonathan Neuschafer <j.neuschaefer@gmx.net>
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/platforms')
| -rw-r--r-- | arch/powerpc/platforms/embedded6xx/wii.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/embedded6xx/wii.c b/arch/powerpc/platforms/embedded6xx/wii.c index ecf703ee3a76..ac4ee88efc80 100644 --- a/arch/powerpc/platforms/embedded6xx/wii.c +++ b/arch/powerpc/platforms/embedded6xx/wii.c @@ -83,6 +83,10 @@ unsigned long __init wii_mmu_mapin_mem2(unsigned long top) /* MEM2 64MB@0x10000000 */ delta = wii_hole_start + wii_hole_size; size = top - delta; + + if (__map_without_bats) + return delta; + for (bl = 128<<10; bl < max_size; bl <<= 1) { if (bl * 2 > size) break; |