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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-07-06 15:39:02 -0700 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-08-05 12:56:08 +1000 |
| commit | cd3db0c4ca3d237e7ad20f7107216e575705d2b0 (patch) | |
| tree | 03be7c14bd68a568a6e2f6df2db9fbbdf11c1483 /arch/powerpc/mm/init_32.c | |
| parent | e63075a3c9377536d085bc013cd3fe6323162449 (diff) | |
| download | linux-cd3db0c4ca3d237e7ad20f7107216e575705d2b0.tar.bz2 | |
memblock: Remove rmo_size, burry it in arch/powerpc where it belongs
The RMA (RMO is a misnomer) is a concept specific to ppc64 (in fact
server ppc64 though I hijack it on embedded ppc64 for similar purposes)
and represents the area of memory that can be accessed in real mode
(aka with MMU off), or on embedded, from the exception vectors (which
is bolted in the TLB) which pretty much boils down to the same thing.
We take that out of the generic MEMBLOCK data structure and move it into
arch/powerpc where it belongs, renaming it to "RMA" while at it.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/mm/init_32.c')
| -rw-r--r-- | arch/powerpc/mm/init_32.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/powerpc/mm/init_32.c b/arch/powerpc/mm/init_32.c index 59b208b7ec6f..742da43b4ab6 100644 --- a/arch/powerpc/mm/init_32.c +++ b/arch/powerpc/mm/init_32.c @@ -237,3 +237,17 @@ void free_initrd_mem(unsigned long start, unsigned long end) } #endif + +#ifdef CONFIG_8xx /* No 8xx specific .c file to put that in ... */ +void setup_initial_memory_limit(phys_addr_t first_memblock_base, + phys_addr_t first_memblock_size) +{ + /* We don't currently support the first MEMBLOCK not mapping 0 + * physical on those processors + */ + BUG_ON(first_memblock_base != 0); + + /* 8xx can only access 8MB at the moment */ + memblock_set_current_limit(min_t(u64, first_memblock_size, 0x00800000)); +} +#endif /* CONFIG_8xx */ |