mirror of https://github.com/dzavalishin/oskit/
40 lines
1.3 KiB
C
Executable File
40 lines
1.3 KiB
C
Executable File
/*
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* Copyright (c) 1996, 1998, 1999 University of Utah and the Flux Group.
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* All rights reserved.
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*
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* This file is part of the Flux OSKit. The OSKit is free software, also known
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* as "open source;" you can redistribute it and/or modify it under the terms
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* of the GNU General Public License (GPL), version 2, as published by the Free
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* Software Foundation (FSF). To explore alternate licensing terms, contact
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* the University of Utah at csl-dist@cs.utah.edu or +1-801-585-3271.
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*
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* The OSKit is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GPL for more details. You should have
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* received a copy of the GPL along with the OSKit; see the file COPYING. If
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* not, write to the FSF, 59 Temple Place #330, Boston, MA 02111-1307, USA.
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <oskit/lmm.h>
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#include <oskit/arm32/base_paging.h>
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extern struct lmm malloc_lmm; /* XXX */
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int pdir_alloc(oskit_addr_t *out_pdir_pa)
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{
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void *pdir_va = lmm_alloc_aligned(&malloc_lmm, ARM32_PD_SIZE,
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0, ARM32_PD_SHIFT, 0);
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if (pdir_va == 0)
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return -1;
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/* Clear it out to make sure all entries are invalid. */
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memset(pdir_va, 0, ARM32_PD_SIZE);
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*out_pdir_pa = kvtophys(pdir_va);
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return 0;
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}
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