2 * (C) Copyright 2000-2002
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
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.
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.
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,
27 DECLARE_GLOBAL_DATA_PTR;
29 #ifdef CFG_ALLOC_DPRAM
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;
40 /* Allocate some memory from the dual ported ram. We may want to
41 * enforce alignment restrictions, but right now everyone is a good
44 uint dpram_alloc (uint size)
46 uint addr = gd->dp_alloc_base;
48 if ((gd->dp_alloc_base + size) >= gd->dp_alloc_top)
49 return (CPM_DP_NOSPACE);
51 gd->dp_alloc_base += size;
56 uint dpram_base (void)
58 return gd->dp_alloc_base;
61 /* Allocate some memory from the dual ported ram. We may want to
62 * enforce alignment restrictions, but right now everyone is a good
65 uint dpram_alloc_align (uint size, uint align)
67 uint addr, mask = align - 1;
69 addr = (gd->dp_alloc_base + mask) & ~mask;
71 if ((addr + size) >= gd->dp_alloc_top)
72 return (CPM_DP_NOSPACE);
74 gd->dp_alloc_base = addr + size;
79 uint dpram_base_align (uint align)
81 uint mask = align - 1;
83 return (gd->dp_alloc_base + mask) & ~mask;
85 #endif /* CFG_ALLOC_DPRAM */
87 #if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER)
89 void post_word_store (ulong a)
91 volatile void *save_addr =
92 ((immap_t *) CFG_IMMR)->im_cpm.cp_dpmem + CPM_POST_WORD_ADDR;
94 *(volatile ulong *) save_addr = a;
97 ulong post_word_load (void)
99 volatile void *save_addr =
100 ((immap_t *) CFG_IMMR)->im_cpm.cp_dpmem + CPM_POST_WORD_ADDR;
102 return *(volatile ulong *) save_addr;
105 #endif /* CONFIG_POST || CONFIG_LOGBUFFER*/
107 #ifdef CONFIG_BOOTCOUNT_LIMIT
109 void bootcount_store (ulong a)
111 volatile ulong *save_addr =
112 (volatile ulong *)( ((immap_t *) CFG_IMMR)->im_cpm.cp_dpmem +
113 CPM_BOOTCOUNT_ADDR );
116 save_addr[1] = BOOTCOUNT_MAGIC;
119 ulong bootcount_load (void)
121 volatile ulong *save_addr =
122 (volatile ulong *)( ((immap_t *) CFG_IMMR)->im_cpm.cp_dpmem +
123 CPM_BOOTCOUNT_ADDR );
125 if (save_addr[1] != BOOTCOUNT_MAGIC)
131 #endif /* CONFIG_BOOTCOUNT_LIMIT */