diff options
Diffstat (limited to 'arch/xtensa/mm/mmu.c')
| -rw-r--r-- | arch/xtensa/mm/mmu.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/xtensa/mm/mmu.c b/arch/xtensa/mm/mmu.c index 5bb8e3c..36ec171 100644 --- a/arch/xtensa/mm/mmu.c +++ b/arch/xtensa/mm/mmu.c @@ -13,6 +13,8 @@ #include <asm/tlbflush.h> #include <asm/mmu_context.h> #include <asm/page.h> +#include <asm/initialize_mmu.h> +#include <asm/io.h> void __init paging_init(void) { @@ -37,6 +39,20 @@ void init_mmu(void) set_itlbcfg_register(0); set_dtlbcfg_register(0); #endif +#if XCHAL_HAVE_PTP_MMU && XCHAL_HAVE_SPANNING_WAY && CONFIG_OF + /* + * Update the IO area mapping in case xtensa_kio_paddr has changed + */ + write_dtlb_entry(__pte(xtensa_kio_paddr + CA_WRITEBACK), + XCHAL_KIO_CACHED_VADDR + 6); + write_itlb_entry(__pte(xtensa_kio_paddr + CA_WRITEBACK), + XCHAL_KIO_CACHED_VADDR + 6); + write_dtlb_entry(__pte(xtensa_kio_paddr + CA_BYPASS), + XCHAL_KIO_BYPASS_VADDR + 6); + write_itlb_entry(__pte(xtensa_kio_paddr + CA_BYPASS), + XCHAL_KIO_BYPASS_VADDR + 6); +#endif + local_flush_tlb_all(); /* Set rasid register to a known value. */ |