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98 lines
1.6 KiB
98 lines
1.6 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* arch/sh/mm/nommu.c |
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* |
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* Various helper routines and stubs for MMUless SH. |
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* |
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* Copyright (C) 2002 - 2009 Paul Mundt |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/init.h> |
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#include <linux/string.h> |
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#include <linux/mm.h> |
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#include <asm/tlbflush.h> |
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#include <asm/page.h> |
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#include <linux/uaccess.h> |
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/* |
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* Nothing too terribly exciting here .. |
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*/ |
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void copy_page(void *to, void *from) |
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{ |
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memcpy(to, from, PAGE_SIZE); |
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} |
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__kernel_size_t __copy_user(void *to, const void *from, __kernel_size_t n) |
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{ |
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memcpy(to, from, n); |
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return 0; |
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} |
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__kernel_size_t __clear_user(void *to, __kernel_size_t n) |
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{ |
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memset(to, 0, n); |
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return 0; |
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} |
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void local_flush_tlb_all(void) |
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{ |
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BUG(); |
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} |
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void local_flush_tlb_mm(struct mm_struct *mm) |
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{ |
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BUG(); |
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} |
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void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start, |
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unsigned long end) |
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{ |
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BUG(); |
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} |
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void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page) |
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{ |
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BUG(); |
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} |
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void local_flush_tlb_one(unsigned long asid, unsigned long page) |
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{ |
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BUG(); |
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} |
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void local_flush_tlb_kernel_range(unsigned long start, unsigned long end) |
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{ |
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BUG(); |
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} |
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void __flush_tlb_global(void) |
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{ |
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} |
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void __update_tlb(struct vm_area_struct *vma, unsigned long address, pte_t pte) |
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{ |
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} |
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void __init kmap_coherent_init(void) |
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{ |
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} |
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void *kmap_coherent(struct page *page, unsigned long addr) |
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{ |
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BUG(); |
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return NULL; |
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} |
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void kunmap_coherent(void *kvaddr) |
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{ |
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BUG(); |
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} |
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void __init page_table_range_init(unsigned long start, unsigned long end, |
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pgd_t *pgd_base) |
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{ |
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} |
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void __set_fixmap(enum fixed_addresses idx, unsigned long phys, pgprot_t prot) |
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{ |
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}
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