/* SPDX-License-Identifier: GPL-2.0-only */
/*
* arch / arm / include / asm / pgtable - nommu . h
*
* Copyright ( C ) 1995 - 2002 Russell King
* Copyright ( C ) 2004 Hyok S . Choi
*/
#ifndef _ASMARM_PGTABLE_NOMMU_H
#define _ASMARM_PGTABLE_NOMMU_H
#ifndef __ASSEMBLY__
#include <linux/slab.h>
#include <asm /processor.h>
#include <asm /page.h>
/*
* Trivial page table functions .
*/
#define pgd_present(pgd) (1 )
#define pgd_none(pgd) (0 )
#define pgd_bad(pgd) (0 )
#define pgd_clear(pgdp)
/*
* PMD_SHIFT determines the size of the area a second - level page table can map
* PGDIR_SHIFT determines what a third - level page table entry can map
*/
#define PGDIR_SHIFT 21
#define PGDIR_SIZE (1 UL << PGDIR_SHIFT)
#define PGDIR_MASK (~(PGDIR_SIZE-1 ))
/* FIXME */
#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 )
#define swapper_pg_dir ((pgd_t *) 0 )
typedef pte_t *pte_addr_t;
/*
* Mark the prot value as uncacheable and unbufferable .
*/
#define pgprot_noncached(prot) (prot)
#define pgprot_writecombine(prot) (prot)
#define pgprot_device(prot) (prot)
/*
* These would be in other places but having them here reduces the diffs .
*/
extern unsigned int kobjsize(const void *objp);
/*
* All 32 bit addresses are effectively valid for vmalloc . . .
* Sort of meaningless for non - VM targets .
*/
#define VMALLOC_START 0 UL
#define VMALLOC_END 0 xffffffffUL
#define FIRST_USER_ADDRESS 0 UL
#else
/*
* dummy tlb and user structures .
*/
#define v3_tlb_fns (0 )
#define v4_tlb_fns (0 )
#define v4wb_tlb_fns (0 )
#define v4wbi_tlb_fns (0 )
#define v6wbi_tlb_fns (0 )
#define v7wbi_tlb_fns (0 )
#define v3_user_fns (0 )
#define v4_user_fns (0 )
#define v4_mc_user_fns (0 )
#define v4wb_user_fns (0 )
#define v4wt_user_fns (0 )
#define v6_user_fns (0 )
#define xscale_mc_user_fns (0 )
#endif /*__ASSEMBLY__*/
#endif /* _ASMARM_PGTABLE_H */
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(vorverarbeitet am 2026-09-30)
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