arm/mm/mmu.c

52  * The pmd table for the upper-most set of pages.
75 	pmdval_t	pmd;
83 		.pmd		= PMD_SECT_UNCACHED,
88 		.pmd		= PMD_SECT_BUFFERED,
93 		.pmd		= PMD_SECT_WT,
98 		.pmd		= PMD_SECT_WB,
103 		.pmd		= PMD_SECT_WBWA,
113  * via the "pmd" value.  This is used to ensure that on ARMv6 and later,
118 void __init init_default_cache_policy(unsigned long pmd)
122 	initial_pmd_value = pmd;
124 	pmd &= PMD_SECT_CACHE_MASK;
127 		if (cache_policies[i].pmd == pmd) {
377 	pmd_t *pmd;
386 	pmd = fixmap_pmd(FIXADDR_TOP);
387 	pmd_populate_kernel(&init_mm, pmd, bm_pte);
681 	mem_types[MT_MEMORY_RWX].prot_sect |= ecc_mask | cp->pmd;
683 	mem_types[MT_MEMORY_RW].prot_sect |= ecc_mask | cp->pmd;
685 	mem_types[MT_MEMORY_RO].prot_sect |= ecc_mask | cp->pmd;
689 	mem_types[MT_ROM].prot_sect |= cp->pmd;
691 	switch (cp->pmd) {
748 static pte_t * __init arm_pte_alloc(pmd_t *pmd, unsigned long addr,
752 	if (pmd_none(*pmd)) {
754 		__pmd_populate(pmd, __pa(pte), prot);
756 	BUG_ON(pmd_bad(*pmd));
757 	return pte_offset_kernel(pmd, addr);
760 static pte_t * __init early_pte_alloc(pmd_t *pmd, unsigned long addr,
763 	return arm_pte_alloc(pmd, addr, prot, early_alloc);
766 static void __init alloc_init_pte(pmd_t *pmd, unsigned long addr,
772 	pte_t *pte = arm_pte_alloc(pmd, addr, type->prot_l1, alloc);
780 static void __init __map_init_section(pmd_t *pmd, unsigned long addr,
784 	pmd_t *p = pmd;
797 		pmd++;
800 		*pmd = __pmd(phys | type->prot_sect | (ng ? PMD_SECT_nG : 0));
802 	} while (pmd++, addr += SECTION_SIZE, addr != end);
812 	pmd_t *pmd = pmd_offset(pud, addr);
828 			__map_init_section(pmd, addr, next, phys, type, ng);
830 			alloc_init_pte(pmd, addr, next,
836 	} while (pmd++, addr = next, addr != end);
918 		pmd_t *pmd = pmd_offset(pud, addr);
922 			*pmd++ = __pmd(phys | type->prot_sect | PMD_SECT_SUPER |
1093 	pmd_t *pmd;
1107 			pmd = pmd_off_k(addr);
1108 			if (pmd_none(*pmd))
1119 			pmd = pmd_off_k(addr) + 1;
1120 			if (pmd_none(*pmd))
1240 			 * Find the first non-pmd-aligned page, and point
1242 			 * limit down to be pmd-aligned, which happens at the
1246 			 * bank can be non-pmd-aligned. The only exception is
1270 	 * Round the memblock limit down to a pmd size.  This
1272 	 * last full pmd, which should be mapped.
1308 	 * equal to MODULES_VADDR and then we exit the pmd clearing. If we
1391 	 * Clear page table except top pmd used by early fixmaps