diff options
Diffstat (limited to 'arch/arm/mm/mm-armv.c')
-rw-r--r-- | arch/arm/mm/mm-armv.c | 110 |
1 files changed, 3 insertions, 107 deletions
diff --git a/arch/arm/mm/mm-armv.c b/arch/arm/mm/mm-armv.c index d125a3d..c626361 100644 --- a/arch/arm/mm/mm-armv.c +++ b/arch/arm/mm/mm-armv.c @@ -1,7 +1,7 @@ /* * linux/arch/arm/mm/mm-armv.c * - * Copyright (C) 1998-2002 Russell King + * Copyright (C) 1998-2005 Russell King * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -305,16 +305,6 @@ alloc_init_page(unsigned long virt, unsigned long phys, unsigned int prot_l1, pg set_pte(ptep, pfn_pte(phys >> PAGE_SHIFT, prot)); } -/* - * Clear any PGD mapping. On a two-level page table system, - * the clearance is done by the middle-level functions (pmd) - * rather than the top-level (pgd) functions. - */ -static inline void clear_mapping(unsigned long virt) -{ - pmd_clear(pmd_off_k(virt)); -} - struct mem_types { unsigned int prot_pte; unsigned int prot_l1; @@ -373,7 +363,7 @@ static struct mem_types mem_types[] __initdata = { /* * Adjust the PMD section entries according to the CPU in use. */ -static void __init build_mem_type_table(void) +void __init build_mem_type_table(void) { struct cachepolicy *cp; unsigned int cr = get_cr(); @@ -483,7 +473,7 @@ static void __init build_mem_type_table(void) * offsets, and we take full advantage of sections and * supersections. */ -static void __init create_mapping(struct map_desc *md) +void __init create_mapping(struct map_desc *md) { unsigned long virt, length; int prot_sect, prot_l1, domain; @@ -601,100 +591,6 @@ void setup_mm_for_reboot(char mode) } } -extern void _stext, _etext; - -/* - * Setup initial mappings. We use the page we allocated for zero page to hold - * the mappings, which will get overwritten by the vectors in traps_init(). - * The mappings must be in virtual address order. - */ -void __init memtable_init(struct meminfo *mi) -{ - struct map_desc *init_maps, *p, *q; - unsigned long address = 0; - int i; - - build_mem_type_table(); - - init_maps = p = alloc_bootmem_low_pages(PAGE_SIZE); - -#ifdef CONFIG_XIP_KERNEL - p->physical = CONFIG_XIP_PHYS_ADDR & PMD_MASK; - p->virtual = (unsigned long)&_stext & PMD_MASK; - p->length = ((unsigned long)&_etext - p->virtual + ~PMD_MASK) & PMD_MASK; - p->type = MT_ROM; - p ++; -#endif - - for (i = 0; i < mi->nr_banks; i++) { - if (mi->bank[i].size == 0) - continue; - - p->physical = mi->bank[i].start; - p->virtual = __phys_to_virt(p->physical); - p->length = mi->bank[i].size; - p->type = MT_MEMORY; - p ++; - } - -#ifdef FLUSH_BASE - p->physical = FLUSH_BASE_PHYS; - p->virtual = FLUSH_BASE; - p->length = PGDIR_SIZE; - p->type = MT_CACHECLEAN; - p ++; -#endif - -#ifdef FLUSH_BASE_MINICACHE - p->physical = FLUSH_BASE_PHYS + PGDIR_SIZE; - p->virtual = FLUSH_BASE_MINICACHE; - p->length = PGDIR_SIZE; - p->type = MT_MINICLEAN; - p ++; -#endif - - /* - * Go through the initial mappings, but clear out any - * pgdir entries that are not in the description. - */ - q = init_maps; - do { - if (address < q->virtual || q == p) { - clear_mapping(address); - address += PGDIR_SIZE; - } else { - create_mapping(q); - - address = q->virtual + q->length; - address = (address + PGDIR_SIZE - 1) & PGDIR_MASK; - - q ++; - } - } while (address != 0); - - /* - * Create a mapping for the machine vectors at the high-vectors - * location (0xffff0000). If we aren't using high-vectors, also - * create a mapping at the low-vectors virtual address. - */ - init_maps->physical = virt_to_phys(init_maps); - init_maps->virtual = 0xffff0000; - init_maps->length = PAGE_SIZE; - init_maps->type = MT_HIGH_VECTORS; - create_mapping(init_maps); - - if (!vectors_high()) { - init_maps->virtual = 0; - init_maps->type = MT_LOW_VECTORS; - create_mapping(init_maps); - } - - flush_cache_all(); - local_flush_tlb_all(); - - top_pmd = pmd_off_k(0xffff0000); -} - /* * Create the architecture specific mappings */ |