blob: 518ea9c03148e78fc16c114f3f292fb6b2b631bb [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
Stefan Roese9d8d5a52007-01-18 16:05:47 +010027#if !defined(CFG_FLASH_CFI_DRIVER)
28
Wolfgang Denkba94a1b2006-05-30 15:56:48 +020029/*
30 * include common flash code (for esd boards)
31 */
32#include "../common/flash.c"
33
34/*
35 * Prototypes
36 */
37static ulong flash_get_size (vu_long * addr, flash_info_t * info);
38
39static inline ulong ld(ulong x)
40{
41 ulong k = 0;
42
43 while (x >>= 1)
44 ++k;
45
46 return k;
47}
48
49unsigned long flash_init(void)
50{
51 unsigned long size;
52 int i;
53
54 /* Init: no FLASHes known */
55 for (i=0; i<CFG_MAX_FLASH_BANKS; i++)
56 flash_info[i].flash_id = FLASH_UNKNOWN;
57
58 size = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
59
60 if (flash_info[0].flash_id == FLASH_UNKNOWN)
61 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
62 size, size<<20);
63
64 /* Reconfigure CS0 to actual FLASH size */
65 *IXP425_EXP_CS0 = (*IXP425_EXP_CS0 & ~0x00003C00) | ((ld(size) - 9) << 10);
66
67 /* Monitor protection ON by default */
68 flash_protect(FLAG_PROTECT_SET,
69 CFG_MONITOR_BASE, CFG_MONITOR_BASE + monitor_flash_len - 1,
70 &flash_info[CFG_MAX_FLASH_BANKS - 1]);
71
72 /* Environment protection ON by default */
73 flash_protect(FLAG_PROTECT_SET,
74 CFG_ENV_ADDR,
75 CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,
76 &flash_info[CFG_MAX_FLASH_BANKS - 1]);
77
78 /* Redundant environment protection ON by default */
79 flash_protect(FLAG_PROTECT_SET,
80 CFG_ENV_ADDR_REDUND,
81 CFG_ENV_ADDR_REDUND + CFG_ENV_SIZE_REDUND - 1,
82 &flash_info[CFG_MAX_FLASH_BANKS - 1]);
83
84 flash_info[0].size = size;
85
86 return size;
87}
Stefan Roese9d8d5a52007-01-18 16:05:47 +010088
89#endif /* CFG_FLASH_CFI_DRIVER */