diff options
Diffstat (limited to 'arch/powerpc/mm/44x_mmu.c')
| -rw-r--r-- | arch/powerpc/mm/44x_mmu.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/powerpc/mm/44x_mmu.c b/arch/powerpc/mm/44x_mmu.c index d8c6efb32bc6..024acab588fd 100644 --- a/arch/powerpc/mm/44x_mmu.c +++ b/arch/powerpc/mm/44x_mmu.c @@ -24,6 +24,8 @@ */ #include <linux/init.h> +#include <linux/memblock.h> + #include <asm/mmu.h> #include <asm/system.h> #include <asm/page.h> @@ -213,6 +215,18 @@ unsigned long __init mmu_mapin_ram(unsigned long top) return total_lowmem; } +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); + + /* 44x has a 256M TLB entry pinned at boot */ + memblock_set_current_limit(min_t(u64, first_memblock_size, PPC_PIN_SIZE)); +} + #ifdef CONFIG_SMP void __cpuinit mmu_init_secondary(int cpu) { |