diff options
Diffstat (limited to 'arch/xtensa/mm/mmu.c')
| -rw-r--r-- | arch/xtensa/mm/mmu.c | 30 |
1 files changed, 17 insertions, 13 deletions
diff --git a/arch/xtensa/mm/mmu.c b/arch/xtensa/mm/mmu.c index 358d748d9083..54c01e3ebf05 100644 --- a/arch/xtensa/mm/mmu.c +++ b/arch/xtensa/mm/mmu.c @@ -82,6 +82,23 @@ void init_mmu(void) set_itlbcfg_register(0); set_dtlbcfg_register(0); #endif + init_kio(); + local_flush_tlb_all(); + + /* Set rasid register to a known value. */ + + set_rasid_register(ASID_INSERT(ASID_USER_FIRST)); + + /* Set PTEVADDR special register to the start of the page + * table, which is in kernel mappable space (ie. not + * statically mapped). This register's value is undefined on + * reset. + */ + set_ptevaddr_register(XCHAL_PAGE_TABLE_VADDR); +} + +void init_kio(void) +{ #if XCHAL_HAVE_PTP_MMU && XCHAL_HAVE_SPANNING_WAY && defined(CONFIG_OF) /* * Update the IO area mapping in case xtensa_kio_paddr has changed @@ -95,17 +112,4 @@ void init_mmu(void) 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. */ - - set_rasid_register(ASID_INSERT(ASID_USER_FIRST)); - - /* Set PTEVADDR special register to the start of the page - * table, which is in kernel mappable space (ie. not - * statically mapped). This register's value is undefined on - * reset. - */ - set_ptevaddr_register(PGTABLE_START); } |