diff options
Diffstat (limited to 'arch/xtensa/mm/init.c')
-rw-r--r-- | arch/xtensa/mm/init.c | 62 |
1 files changed, 1 insertions, 61 deletions
diff --git a/arch/xtensa/mm/init.c b/arch/xtensa/mm/init.c index 6190988bba17..427e14fa43c5 100644 --- a/arch/xtensa/mm/init.c +++ b/arch/xtensa/mm/init.c @@ -24,15 +24,8 @@ #include <linux/mm.h> #include <linux/slab.h> -#include <asm/pgtable.h> #include <asm/bootparam.h> -#include <asm/mmu_context.h> -#include <asm/tlb.h> #include <asm/page.h> -#include <asm/pgalloc.h> - - -DEFINE_PER_CPU(struct mmu_gather, mmu_gathers); /* References to section boundaries */ @@ -160,7 +153,7 @@ void __init bootmem_init(void) } -void __init paging_init(void) +void __init zones_init(void) { unsigned long zones_size[MAX_NR_ZONES]; int i; @@ -175,43 +168,10 @@ void __init paging_init(void) zones_size[ZONE_HIGHMEM] = max_pfn - max_low_pfn; #endif - /* Initialize the kernel's page tables. */ - - memset(swapper_pg_dir, 0, PAGE_SIZE); - free_area_init_node(0, zones_size, ARCH_PFN_OFFSET, NULL); } /* - * Flush the mmu and reset associated register to default values. - */ - -void __init init_mmu (void) -{ - /* Writing zeros to the <t>TLBCFG special registers ensure - * that valid values exist in the register. For existing - * PGSZID<w> fields, zero selects the first element of the - * page-size array. For nonexistent PGSZID<w> fields, zero is - * the best value to write. Also, when changing PGSZID<w> - * fields, the corresponding TLB must be flushed. - */ - set_itlbcfg_register (0); - set_dtlbcfg_register (0); - flush_tlb_all (); - - /* Set rasid register to a known value. */ - - set_rasid_register (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); -} - -/* * Initialize memory pages. */ @@ -281,23 +241,3 @@ void free_initmem(void) printk("Freeing unused kernel memory: %dk freed\n", (&__init_end - &__init_begin) >> 10); } - -struct kmem_cache *pgtable_cache __read_mostly; - -static void pgd_ctor(void* addr) -{ - pte_t* ptep = (pte_t*)addr; - int i; - - for (i = 0; i < 1024; i++, ptep++) - pte_clear(NULL, 0, ptep); - -} - -void __init pgtable_cache_init(void) -{ - pgtable_cache = kmem_cache_create("pgd", - PAGE_SIZE, PAGE_SIZE, - SLAB_HWCACHE_ALIGN, - pgd_ctor); -} |