patch-2.3.23 linux/include/asm-arm/proc-armv/mm-init.h

• Lines: 178
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.3.22/linux/include/asm-arm/proc-armv/mm-init.h
• Orig date: Sat May 8 11:06:58 1999

diff -u --recursive --new-file v2.3.22/linux/include/asm-arm/proc-armv/mm-init.h linux/include/asm-arm/proc-armv/mm-init.h
@@ -1,177 +0,0 @@
-/*
- * linux/include/asm-arm/proc-armv/mm-init.h
- *
- * Copyright (C) 1996 Russell King
- *
- * This contains the code to setup the memory map on an ARM v3 or v4 machine.
- * This is both processor & architecture specific, and requires some
- * more work to get it to fit into our separate processor and architecture
- * structure.
- */
-
-/*
- * On ebsa, we want the memory map set up so:
- *
- *   PHYS	  VIRT
- * 00000000	00000000	Zero page
- * 000003ff	000003ff	Zero page end
- * 00000000	c0000000	Kernel and all physical memory
- * 01ffffff	c1ffffff	End of physical (32MB)
- * e0000000	e0000000	IO start
- * ffffffff	ffffffff	IO end
- *
- * On rpc, we want:
- *
- *   PHYS	  VIRT
- * 10000000	00000000	Zero page
- * 100003ff	000003ff	Zero page end
- * 10000000	c0000000	Kernel and all physical memory
- * 1fffffff	cfffffff	End of physical (32MB)
- * 02000000	d?000000	Screen memory (first image)
- * 02000000	d8000000	Screen memory (second image)
- * 00000000	df000000	StrongARM cache invalidation area
- * 03000000	e0000000	IO start
- * 03ffffff	e0ffffff	IO end
- *
- * We set it up using the section page table entries.
- */
-#include <asm/pgtable.h>
- 
-#define PTE_SIZE (PTRS_PER_PTE * BYTES_PER_PTR)
-
-extern unsigned long setup_io_pagetables(unsigned long start_mem);
-
-/*
- * Add a SECTION mapping between VIRT and PHYS in domain DOMAIN with protection PROT
- */
-static inline void
-alloc_init_section(unsigned long *mem, unsigned long virt, unsigned long phys, int domain, int prot)
-{
-	pgd_t *pgdp;
-	pmd_t *pmdp, pmd;
-
-	pgdp = pgd_offset_k(virt);
-	pmdp = pmd_offset(pgdp, virt);
-
-	pmd_val(pmd) = phys | PMD_TYPE_SECT | PMD_DOMAIN(domain) | prot;
-	set_pmd(pmdp, pmd);
-}
-
-/*
- * Clear any mapping
- */
-static inline void
-free_init_section(unsigned long virt)
-{
-	pgd_t *pgdp;
-	pmd_t *pmdp;
-
-	pgdp = pgd_offset_k(virt);
-	pmdp = pmd_offset(pgdp, virt);
-
-	pmd_clear(pmdp);
-}
-
-/*
- * Add a PAGE mapping between VIRT and PHYS in domain DOMAIN with protection PROT
- */
-static inline void
-alloc_init_page(unsigned long *mem, unsigned long virt, unsigned long phys, int domain, int prot)
-{
-	pgd_t *pgdp;
-	pmd_t *pmdp;
-	pte_t *ptep;
-
-	pgdp = pgd_offset_k(virt);
-	pmdp = pmd_offset(pgdp, virt);
-
-	if (pmd_none(*pmdp)) {
-		unsigned long memory = *mem;
-
-		memory = (memory + PTE_SIZE - 1) & ~(PTE_SIZE - 1);
-
-		ptep = (pte_t *)memory;
-		memzero(ptep, PTE_SIZE);
-		memory += PTE_SIZE;
-
-		ptep = (pte_t *)memory;
-		memzero(ptep, PTE_SIZE);
-
-		set_pmd(pmdp, __mk_pmd(ptep, PMD_TYPE_TABLE | PMD_DOMAIN(domain)));
-
-		*mem = memory + PTE_SIZE;
-	}
-
-	ptep = pte_offset(pmdp, virt);
-
-	set_pte(ptep, mk_pte_phys(phys, __pgprot(prot)));
-}
-
-static inline unsigned long
-setup_pagetables(unsigned long start_mem, unsigned long end_mem)
-{
-	unsigned long address = 0;
-
-	do {
-		if (address >= PAGE_OFFSET && address < end_mem)
-			/*
-			 * map in physical ram & kernel
-			 */
-			alloc_init_section(&start_mem, address, __virt_to_phys(address), DOMAIN_KERNEL,
-					   PMD_SECT_CACHEABLE | PMD_SECT_BUFFERABLE | PMD_SECT_AP_WRITE);
-		else
-			/*
-			 * unmap everything else
-			 */
-			free_init_section(address);
-
-		address += PGDIR_SIZE;
-	} while (address != 0);
-
-	/*
-	 * An area to invalidate the cache
-	 */
-	alloc_init_section(&start_mem, FLUSH_BASE, FLUSH_BASE_PHYS, DOMAIN_KERNEL,
-			   PMD_SECT_CACHEABLE | PMD_SECT_AP_READ);
-
-	/*
-	 * Now set up our IO mappings
-	 */
-	start_mem = setup_io_pagetables(start_mem);
-
-	/*
-	 * map in zero page
-	 */
-	alloc_init_page(&start_mem, 0, __virt_to_phys(PAGE_OFFSET),
-			DOMAIN_USER, L_PTE_CACHEABLE | L_PTE_YOUNG | L_PTE_PRESENT);
-
-	flush_cache_all();
-
-	return start_mem;
-}
-
-static inline
-void mark_usable_memory_areas(unsigned long *start_mem, unsigned long end_mem)
-{
-	unsigned long smem;
-
-	*start_mem = smem = PAGE_ALIGN(*start_mem);
-
-	/*
-	 * Mark all of memory from the end of kernel to end of memory
-	 */
-	while (smem < end_mem) {
-		clear_bit(PG_reserved, &mem_map[MAP_NR(smem)].flags);
-		smem += PAGE_SIZE;
-	}
-
-	/*
-	 * Mark memory from page 1 to start of the swapper page directory
-	 */
-	smem = PAGE_OFFSET + PAGE_SIZE;
-	while (smem < (unsigned long)&swapper_pg_dir) {
-		clear_bit(PG_reserved, &mem_map[MAP_NR(smem)].flags);
-		smem += PAGE_SIZE;
-	}
-}	
-