diff options
Diffstat (limited to 'arch/powerpc/mm/tlb_nohash.c')
| -rw-r--r-- | arch/powerpc/mm/tlb_nohash.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/powerpc/mm/tlb_nohash.c b/arch/powerpc/mm/tlb_nohash.c index 665189920762..61fe32a256da 100644 --- a/arch/powerpc/mm/tlb_nohash.c +++ b/arch/powerpc/mm/tlb_nohash.c @@ -541,6 +541,20 @@ static void __early_init_mmu(int boot_cpu) */ linear_map_top = memblock_end_of_DRAM(); +#ifdef CONFIG_PPC_FSL_BOOK3E + if (mmu_has_feature(MMU_FTR_TYPE_FSL_E)) { + unsigned int num_cams; + + /* use a quarter of the TLBCAM for bolted linear map */ + num_cams = (mfspr(SPRN_TLB1CFG) & TLBnCFG_N_ENTRY) / 4; + linear_map_top = map_mem_in_cams(linear_map_top, num_cams); + + /* limit memory so we dont have linear faults */ + memblock_enforce_memory_limit(linear_map_top); + memblock_analyze(); + } +#endif + /* A sync won't hurt us after mucking around with * the MMU configuration */ |