source: SVN/rincon/u-boot/board/prodrive/pdnb3/flash.c @ 55

Last change on this file since 55 was 55, checked in by Tim Harvey, 22 months ago

rincon: added latest u-boot source

restored form server backup

Signed-off-by: Tim Harvey <tharvey@…>

File size: 2.4 KB
Line 
1/*
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#if !defined(CONFIG_FLASH_CFI_DRIVER)
28
29/*
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                      CONFIG_ENV_ADDR,
75                      CONFIG_ENV_ADDR + CONFIG_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                      CONFIG_ENV_ADDR_REDUND,
81                      CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SIZE_REDUND - 1,
82                      &flash_info[CFG_MAX_FLASH_BANKS - 1]);
83
84        flash_info[0].size = size;
85
86        return size;
87}
88
89#endif /* CONFIG_FLASH_CFI_DRIVER */
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