70 lines
1.4 KiB
C
70 lines
1.4 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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* SPDX-License-Identifier: GPL-2.0+
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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->arch.dp_alloc_base = CPM_DATAONLY_BASE;
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gd->arch.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->arch.dp_alloc_base;
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if ((gd->arch.dp_alloc_base + size) >= gd->arch.dp_alloc_top)
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return (CPM_DP_NOSPACE);
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gd->arch.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->arch.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->arch.dp_alloc_base + mask) & ~mask;
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if ((addr + size) >= gd->arch.dp_alloc_top)
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return (CPM_DP_NOSPACE);
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gd->arch.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->arch.dp_alloc_base + mask) & ~mask;
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}
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#endif /* CONFIG_SYS_ALLOC_DPRAM */
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