mirror of https://gitee.com/openkylin/linux.git
46 lines
913 B
C
46 lines
913 B
C
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/*
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* arch/sh/mm/fixed_pmb.c
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*
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* Copyright (C) 2009 Renesas Solutions Corp.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#include <linux/init.h>
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#include <linux/mm.h>
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#include <linux/io.h>
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#include <asm/mmu.h>
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#include <asm/mmu_context.h>
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static int __uses_jump_to_uncached fixed_pmb_init(void)
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{
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int i;
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unsigned long addr, data;
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jump_to_uncached();
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for (i = 0; i < PMB_ENTRY_MAX; i++) {
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addr = PMB_DATA + (i << PMB_E_SHIFT);
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data = ctrl_inl(addr);
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if (!(data & PMB_V))
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continue;
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if (data & PMB_C) {
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#if defined(CONFIG_CACHE_WRITETHROUGH)
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data |= PMB_WT;
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#elif defined(CONFIG_CACHE_WRITEBACK)
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data &= ~PMB_WT;
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#else
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data &= ~(PMB_C | PMB_WT);
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#endif
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}
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ctrl_outl(data, addr);
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}
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back_to_cached();
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return 0;
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}
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arch_initcall(fixed_pmb_init);
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