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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2010-07-06 18:39:02 -0400
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2010-08-04 22:56:08 -0400
commitcd3db0c4ca3d237e7ad20f7107216e575705d2b0 (patch)
tree03be7c14bd68a568a6e2f6df2db9fbbdf11c1483 /arch/powerpc/mm/fsl_booke_mmu.c
parente63075a3c9377536d085bc013cd3fe6323162449 (diff)
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/fsl_booke_mmu.c')
-rw-r--r--arch/powerpc/mm/fsl_booke_mmu.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/powerpc/mm/fsl_booke_mmu.c b/arch/powerpc/mm/fsl_booke_mmu.c
index e525f862d759..0be8fe24c54e 100644
--- a/arch/powerpc/mm/fsl_booke_mmu.c
+++ b/arch/powerpc/mm/fsl_booke_mmu.c
@@ -215,3 +215,12 @@ void __init adjust_total_lowmem(void)
215 215
216 memblock_set_current_limit(memstart_addr + __max_low_memory); 216 memblock_set_current_limit(memstart_addr + __max_low_memory);
217} 217}
218
219void setup_initial_memory_limit(phys_addr_t first_memblock_base,
220 phys_addr_t first_memblock_size)
221{
222 phys_addr_t limit = first_memblock_base + first_memblock_size;
223
224 /* 64M mapped initially according to head_fsl_booke.S */
225 memblock_set_current_limit(min_t(u64, limit, 0x04000000));
226}