37 lines
775 B
C
37 lines
775 B
C
// SPDX-License-Identifier: GPL-2.0
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// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
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#include <linux/module.h>
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#include <linux/highmem.h>
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#include <linux/smp.h>
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#include <linux/memblock.h>
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#include <asm/fixmap.h>
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#include <asm/tlbflush.h>
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#include <asm/cacheflush.h>
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unsigned long highstart_pfn, highend_pfn;
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void kmap_flush_tlb(unsigned long addr)
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{
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flush_tlb_one(addr);
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}
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EXPORT_SYMBOL(kmap_flush_tlb);
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void __init kmap_init(void)
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{
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unsigned long vaddr;
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pgd_t *pgd;
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pmd_t *pmd;
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pud_t *pud;
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pte_t *pte;
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vaddr = PKMAP_BASE;
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fixrange_init(vaddr, vaddr + PAGE_SIZE*LAST_PKMAP, swapper_pg_dir);
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pgd = swapper_pg_dir + pgd_index(vaddr);
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pud = (pud_t *)pgd;
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pmd = pmd_offset(pud, vaddr);
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pte = pte_offset_kernel(pmd, vaddr);
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pkmap_page_table = pte;
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}
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