wdenk | a042ac8 | 2002-09-12 22:36:57 +0000 | [diff] [blame] | 1 | /* |
| 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 | |
| 29 | int 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 | */ |
| 44 | uint 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 | |
| 57 | uint 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 | */ |
| 68 | uint 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 | |
| 84 | uint 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 | |
wdenk | d9fce81 | 2003-06-28 17:24:46 +0000 | [diff] [blame] | 94 | #if defined(CONFIG_POST) || defined(CONFIG_LOGBUFFER) |
wdenk | a042ac8 | 2002-09-12 22:36:57 +0000 | [diff] [blame] | 95 | |
| 96 | void 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 | |
| 104 | ulong 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 | |
wdenk | d9fce81 | 2003-06-28 17:24:46 +0000 | [diff] [blame] | 112 | #endif /* CONFIG_POST || CONFIG_LOGBUFFER*/ |
wdenk | 0a65855 | 2003-08-05 17:43:17 +0000 | [diff] [blame^] | 113 | |
| 114 | #ifdef CONFIG_BOOTCOUNT_LIMIT |
| 115 | |
| 116 | void 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 | |
| 126 | ulong 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 */ |