diff options
Diffstat (limited to 'arch/m68k/include/asm/pgtable_no.h')
| -rw-r--r-- | arch/m68k/include/asm/pgtable_no.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/arch/m68k/include/asm/pgtable_no.h b/arch/m68k/include/asm/pgtable_no.h new file mode 100644 index 000000000..bce5ca56c --- /dev/null +++ b/arch/m68k/include/asm/pgtable_no.h @@ -0,0 +1,57 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _M68KNOMMU_PGTABLE_H +#define _M68KNOMMU_PGTABLE_H + +#include <asm-generic/pgtable-nopud.h> + +/* + * (C) Copyright 2000-2002, Greg Ungerer <gerg@snapgear.com> + */ + +#include <linux/slab.h> +#include <asm/processor.h> +#include <asm/page.h> +#include <asm/io.h> + +/* + * Trivial page table functions. + */ +#define pgd_present(pgd) (1) +#define pgd_none(pgd) (0) +#define pgd_bad(pgd) (0) +#define pgd_clear(pgdp) +#define kern_addr_valid(addr) (1) +#define pmd_offset(a, b) ((void *)0) + +#define PAGE_NONE __pgprot(0) +#define PAGE_SHARED __pgprot(0) +#define PAGE_COPY __pgprot(0) +#define PAGE_READONLY __pgprot(0) +#define PAGE_KERNEL __pgprot(0) + +extern void paging_init(void); +#define swapper_pg_dir ((pgd_t *) 0) + +#define __swp_type(x) (0) +#define __swp_offset(x) (0) +#define __swp_entry(typ,off) ((swp_entry_t) { ((typ) | ((off) << 7)) }) +#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) }) +#define __swp_entry_to_pte(x) ((pte_t) { (x).val }) + +/* + * ZERO_PAGE is a global shared page that is always zero: used + * for zero-mapped memory areas etc.. + */ +extern void *empty_zero_page; +#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page)) + +/* + * All 32bit addresses are effectively valid for vmalloc... + * Sort of meaningless for non-VM targets. + */ +#define VMALLOC_START 0 +#define VMALLOC_END 0xffffffff +#define KMAP_START 0 +#define KMAP_END 0xffffffff + +#endif /* _M68KNOMMU_PGTABLE_H */ |