blob: 75740e07f2bd00ef78071c6d5568bf7e89748f13 [file] [log] [blame]
wdenka042ac82002-09-12 22:36:57 +00001/*
2 * (C) Copyright 2000-2002
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24#include <common.h>
25#include <commproc.h>
26
27#ifdef CFG_ALLOC_DPRAM
28
29int dpram_init (void)
30{
31 DECLARE_GLOBAL_DATA_PTR;
32
33 /* Reclaim the DP memory for our use. */
34 gd->dp_alloc_base = CPM_DATAONLY_BASE;
35 gd->dp_alloc_top = CPM_DATAONLY_BASE + CPM_DATAONLY_SIZE;
36
37 return (0);
38}
39
40/* Allocate some memory from the dual ported ram. We may want to
41 * enforce alignment restrictions, but right now everyone is a good
42 * citizen.
43 */
44uint dpram_alloc (uint size)
45{
46 DECLARE_GLOBAL_DATA_PTR;
47 uint addr = gd->dp_alloc_base;
48
49 if ((gd->dp_alloc_base + size) >= gd->dp_alloc_top)
50 return (CPM_DP_NOSPACE);
51
52 gd->dp_alloc_base += size;
53
54 return addr;
55}
56
57uint dpram_base (void)
58{
59 DECLARE_GLOBAL_DATA_PTR;
60
61 return gd->dp_alloc_base;
62}
63
64/* Allocate some memory from the dual ported ram. We may want to
65 * enforce alignment restrictions, but right now everyone is a good
66 * citizen.
67 */
68uint dpram_alloc_align (uint size, uint align)
69{
70 DECLARE_GLOBAL_DATA_PTR;
71
72 uint addr, mask = align - 1;
73
74 addr = (gd->dp_alloc_base + mask) & ~mask;
75
76 if ((addr + size) >= gd->dp_alloc_top)
77 return (CPM_DP_NOSPACE);
78
79 gd->dp_alloc_base = addr + size;
80
81 return addr;
82}
83
84uint dpram_base_align (uint align)
85{
86 DECLARE_GLOBAL_DATA_PTR;
87
88 uint mask = align - 1;
89
90 return (gd->dp_alloc_base + mask) & ~mask;
91}
92#endif /* CFG_ALLOC_DPRAM */
93
wdenkd1cbe852003-06-28 17:24:46 +000094#if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER)
wdenka042ac82002-09-12 22:36:57 +000095
96void post_word_store (ulong a)
97{
98 volatile void *save_addr =
99 ((immap_t *) CFG_IMMR)->im_cpm.cp_dpmem + CPM_POST_WORD_ADDR;
100
101 *(volatile ulong *) save_addr = a;
102}
103
104ulong post_word_load (void)
105{
106 volatile void *save_addr =
107 ((immap_t *) CFG_IMMR)->im_cpm.cp_dpmem + CPM_POST_WORD_ADDR;
108
109 return *(volatile ulong *) save_addr;
110}
111
wdenkd1cbe852003-06-28 17:24:46 +0000112#endif /* CONFIG_POST || CONFIG_LOGBUFFER*/
wdenkbdccc4f2003-08-05 17:43:17 +0000113
114#ifdef CONFIG_BOOTCOUNT_LIMIT
115
116void bootcount_store (ulong a)
117{
118 volatile ulong *save_addr =
119 (volatile ulong *)( ((immap_t *) CFG_IMMR)->im_cpm.cp_dpmem +
120 CPM_BOOTCOUNT_ADDR );
121
122 save_addr[0] = a;
123 save_addr[1] = BOOTCOUNT_MAGIC;
124}
125
126ulong bootcount_load (void)
127{
128 volatile ulong *save_addr =
129 (volatile ulong *)( ((immap_t *) CFG_IMMR)->im_cpm.cp_dpmem +
130 CPM_BOOTCOUNT_ADDR );
131
132 if (save_addr[1] != BOOTCOUNT_MAGIC)
133 return 0;
134 else
135 return save_addr[0];
136}
137
138#endif /* CONFIG_BOOTCOUNT_LIMIT */