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 #ifdef CFG_ALLOC_DPRAM
31 DECLARE_GLOBAL_DATA_PTR;
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 DECLARE_GLOBAL_DATA_PTR;
47 uint addr = gd->dp_alloc_base;
49 if ((gd->dp_alloc_base + size) >= gd->dp_alloc_top)
50 return (CPM_DP_NOSPACE);
52 gd->dp_alloc_base += size;
57 uint dpram_base (void)
59 DECLARE_GLOBAL_DATA_PTR;
61 return gd->dp_alloc_base;
64 /* Allocate some memory from the dual ported ram. We may want to
65 * enforce alignment restrictions, but right now everyone is a good
68 uint dpram_alloc_align (uint size, uint align)
70 DECLARE_GLOBAL_DATA_PTR;
72 uint addr, mask = align - 1;
74 addr = (gd->dp_alloc_base + mask) & ~mask;
76 if ((addr + size) >= gd->dp_alloc_top)
77 return (CPM_DP_NOSPACE);
79 gd->dp_alloc_base = addr + size;
84 uint dpram_base_align (uint align)
86 DECLARE_GLOBAL_DATA_PTR;
88 uint mask = align - 1;
90 return (gd->dp_alloc_base + mask) & ~mask;
92 #endif /* CFG_ALLOC_DPRAM */
94 #if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER)
96 void post_word_store (ulong a)
98 volatile void *save_addr =
99 ((immap_t *) CFG_IMMR)->im_cpm.cp_dpmem + CPM_POST_WORD_ADDR;
101 *(volatile ulong *) save_addr = a;
104 ulong post_word_load (void)
106 volatile void *save_addr =
107 ((immap_t *) CFG_IMMR)->im_cpm.cp_dpmem + CPM_POST_WORD_ADDR;
109 return *(volatile ulong *) save_addr;
112 #endif /* CONFIG_POST || CONFIG_LOGBUFFER*/
114 #ifdef CONFIG_BOOTCOUNT_LIMIT
116 void bootcount_store (ulong a)
118 volatile ulong *save_addr =
119 (volatile ulong *)( ((immap_t *) CFG_IMMR)->im_cpm.cp_dpmem +
120 CPM_BOOTCOUNT_ADDR );
123 save_addr[1] = BOOTCOUNT_MAGIC;
126 ulong bootcount_load (void)
128 volatile ulong *save_addr =
129 (volatile ulong *)( ((immap_t *) CFG_IMMR)->im_cpm.cp_dpmem +
130 CPM_BOOTCOUNT_ADDR );
132 if (save_addr[1] != BOOTCOUNT_MAGIC)
138 #endif /* CONFIG_BOOTCOUNT_LIMIT */