mirror of
https://github.com/smaeul/u-boot.git
synced 2025-11-03 21:48:15 +00:00
132 lines
3.0 KiB
C
132 lines
3.0 KiB
C
/*
|
|
* (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>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
#ifdef CFG_ALLOC_DPRAM
|
|
|
|
int dpram_init (void)
|
|
{
|
|
/* 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)
|
|
{
|
|
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)
|
|
{
|
|
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)
|
|
{
|
|
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)
|
|
{
|
|
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 */
|