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