blob: d0e5fe703b98fd386fed671abc7d5d780dfb156c [file] [log] [blame]
Wolfgang Denkba94a1b2006-05-30 15:56:48 +02001/*
2 * (C) Copyright 2006
3 * Stefan Roese, DENX Software Engineering, sr@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 <asm/arch/ixp425.h>
26
27/*
28 * include common flash code (for esd boards)
29 */
30#include "../common/flash.c"
31
32/*
33 * Prototypes
34 */
35static ulong flash_get_size (vu_long * addr, flash_info_t * info);
36
37static inline ulong ld(ulong x)
38{
39 ulong k = 0;
40
41 while (x >>= 1)
42 ++k;
43
44 return k;
45}
46
47unsigned long flash_init(void)
48{
49 unsigned long size;
50 int i;
51
52 /* Init: no FLASHes known */
53 for (i=0; i<CFG_MAX_FLASH_BANKS; i++)
54 flash_info[i].flash_id = FLASH_UNKNOWN;
55
56 size = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
57
58 if (flash_info[0].flash_id == FLASH_UNKNOWN)
59 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
60 size, size<<20);
61
62 /* Reconfigure CS0 to actual FLASH size */
63 *IXP425_EXP_CS0 = (*IXP425_EXP_CS0 & ~0x00003C00) | ((ld(size) - 9) << 10);
64
65 /* Monitor protection ON by default */
66 flash_protect(FLAG_PROTECT_SET,
67 CFG_MONITOR_BASE, CFG_MONITOR_BASE + monitor_flash_len - 1,
68 &flash_info[CFG_MAX_FLASH_BANKS - 1]);
69
70 /* Environment protection ON by default */
71 flash_protect(FLAG_PROTECT_SET,
72 CFG_ENV_ADDR,
73 CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,
74 &flash_info[CFG_MAX_FLASH_BANKS - 1]);
75
76 /* Redundant environment protection ON by default */
77 flash_protect(FLAG_PROTECT_SET,
78 CFG_ENV_ADDR_REDUND,
79 CFG_ENV_ADDR_REDUND + CFG_ENV_SIZE_REDUND - 1,
80 &flash_info[CFG_MAX_FLASH_BANKS - 1]);
81
82 flash_info[0].size = size;
83
84 return size;
85}