diff options
Diffstat (limited to 'arch/powerpc/mm/ppc_mmu_32.c')
| -rw-r--r-- | arch/powerpc/mm/ppc_mmu_32.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/powerpc/mm/ppc_mmu_32.c b/arch/powerpc/mm/ppc_mmu_32.c index 7d34e170e80f..11571e118831 100644 --- a/arch/powerpc/mm/ppc_mmu_32.c +++ b/arch/powerpc/mm/ppc_mmu_32.c @@ -271,3 +271,18 @@ void __init MMU_init_hw(void) if ( ppc_md.progress ) ppc_md.progress("hash:done", 0x205); } + +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); + + /* 601 can only access 16MB at the moment */ + if (PVR_VER(mfspr(SPRN_PVR)) == 1) + memblock_set_current_limit(min_t(u64, first_memblock_size, 0x01000000)); + else /* Anything else has 256M mapped */ + memblock_set_current_limit(min_t(u64, first_memblock_size, 0x10000000)); +} |