scoutos / prex-0.9.0 / bsp / hal / ppc / include / mmu.h @ 03e9c04a
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/*-
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* Copyright (c) 2009, Kohsuke Ohtani
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _PPC_MMU_H
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#define _PPC_MMU_H
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#include <sys/types.h> |
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typedef uint32_t *pgd_t; /* page directory */ |
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struct pte {
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uint32_t pte_hi; |
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uint32_t pte_lo; |
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}; |
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typedef struct pte *pte_t; /* page table entry */ |
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/*
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* Page table entry
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*/
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/* high word: */
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#define PTE_VALID 0x00000001 /* valid */ |
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#define PTE_VSID 0x7fffff80 /* virtual segment */ |
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#define PTE_HID 0x00000040 /* hash */ |
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#define PTE_API 0x0000003f /* abbreviated page index */ |
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/* low word: */
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#define PTE_RPN 0xfffff000 /* real page number */ |
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#define PTE_REF 0x00000100 /* reference */ |
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#define PTE_CHG 0x00000080 /* change */ |
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#define PTE_WIMG 0x00000078 /* memory/cache control */ |
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#define PTE_PP 0x00000003 /* page protection */ |
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/*
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* Virtual and physical address translation
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*/
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#define PAGE_DIR(virt)
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#define PAGE_TABLE(virt)
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#define pte_present(pgd, virt)
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#define page_present(pte, virt)
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#define vtopte(pgd, virt)
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#define ptetopg(pte, virt)
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#endif /* !_PPC_MMU_H */ |