86 lines
2.1 KiB
C
86 lines
2.1 KiB
C
/*
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* (C) Copyright 2000-2002
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <commproc.h>
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DECLARE_GLOBAL_DATA_PTR;
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#ifdef CONFIG_SYS_ALLOC_DPRAM
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int dpram_init (void)
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{
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/* Reclaim the DP memory for our use. */
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gd->dp_alloc_base = CPM_DATAONLY_BASE;
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gd->dp_alloc_top = CPM_DATAONLY_BASE + CPM_DATAONLY_SIZE;
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return (0);
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}
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/* Allocate some memory from the dual ported ram. We may want to
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* enforce alignment restrictions, but right now everyone is a good
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* citizen.
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*/
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uint dpram_alloc (uint size)
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{
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uint addr = gd->dp_alloc_base;
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if ((gd->dp_alloc_base + size) >= gd->dp_alloc_top)
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return (CPM_DP_NOSPACE);
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gd->dp_alloc_base += size;
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return addr;
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}
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uint dpram_base (void)
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{
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return gd->dp_alloc_base;
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}
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/* Allocate some memory from the dual ported ram. We may want to
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* enforce alignment restrictions, but right now everyone is a good
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* citizen.
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*/
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uint dpram_alloc_align (uint size, uint align)
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{
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uint addr, mask = align - 1;
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addr = (gd->dp_alloc_base + mask) & ~mask;
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if ((addr + size) >= gd->dp_alloc_top)
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return (CPM_DP_NOSPACE);
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gd->dp_alloc_base = addr + size;
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return addr;
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}
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uint dpram_base_align (uint align)
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{
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uint mask = align - 1;
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return (gd->dp_alloc_base + mask) & ~mask;
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}
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#endif /* CONFIG_SYS_ALLOC_DPRAM */
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