source: SVN/rincon/u-boot/board/esd/adciop/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: 3.3 KB
Line 
1/*
2 * (C) Copyright 2001
3 * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
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 <ppc4xx.h>
26#include <asm/processor.h>
27
28/*
29 * include common flash code (for esd boards)
30 */
31#include "../common/flash.c"
32
33/*-----------------------------------------------------------------------
34 * Functions
35 */
36static ulong flash_get_size (vu_long *addr, flash_info_t *info);
37static void flash_get_offsets (ulong base, flash_info_t *info);
38
39/*-----------------------------------------------------------------------
40 */
41
42unsigned long flash_init (void)
43{
44        unsigned long size_b0, size_b1;
45        int i;
46
47        /* Init: no FLASHes known */
48        for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
49                flash_info[i].flash_id = FLASH_UNKNOWN;
50        }
51
52        size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
53
54        if (flash_info[0].flash_id == FLASH_UNKNOWN) {
55                printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
56                        size_b0, size_b0<<20);
57        }
58
59        size_b1 = flash_get_size((vu_long *)FLASH_BASE1_PRELIM, &flash_info[1]);
60
61        if (size_b1 > size_b0) {
62                printf ("## ERROR: "
63                        "Bank 1 (0x%08lx = %ld MB) > Bank 0 (0x%08lx = %ld MB)\n",
64                        size_b1, size_b1<<20,
65                        size_b0, size_b0<<20
66                );
67                flash_info[0].flash_id  = FLASH_UNKNOWN;
68                flash_info[1].flash_id  = FLASH_UNKNOWN;
69                flash_info[0].sector_count      = -1;
70                flash_info[1].sector_count      = -1;
71                flash_info[0].size              = 0;
72                flash_info[1].size              = 0;
73                return (0);
74        }
75
76        /* Re-do sizing to get full correct info */
77        size_b0 = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
78
79        flash_get_offsets (FLASH_BASE0_PRELIM, &flash_info[0]);
80
81        /* monitor protection ON by default */
82        flash_protect(FLAG_PROTECT_SET,
83                      FLASH_BASE0_PRELIM+size_b0-monitor_flash_len,
84                      FLASH_BASE0_PRELIM+size_b0-1,
85                      &flash_info[0]);
86
87        if (size_b1) {
88                /* Re-do sizing to get full correct info */
89                size_b1 = flash_get_size((vu_long *)(FLASH_BASE0_PRELIM + size_b0),
90                                          &flash_info[1]);
91
92                flash_get_offsets (FLASH_BASE0_PRELIM + size_b0, &flash_info[1]);
93
94                /* monitor protection ON by default */
95                flash_protect(FLAG_PROTECT_SET,
96                              FLASH_BASE0_PRELIM+size_b0+size_b1-monitor_flash_len,
97                              FLASH_BASE0_PRELIM+size_b0+size_b1-1,
98                              &flash_info[1]);
99                /* monitor protection OFF by default (one is enough) */
100                flash_protect(FLAG_PROTECT_CLEAR,
101                              FLASH_BASE0_PRELIM+size_b0-monitor_flash_len,
102                              FLASH_BASE0_PRELIM+size_b0-1,
103                              &flash_info[0]);
104        } else {
105                flash_info[1].flash_id = FLASH_UNKNOWN;
106                flash_info[1].sector_count = -1;
107        }
108
109        flash_info[0].size = size_b0;
110        flash_info[1].size = size_b1;
111
112        return (size_b0 + size_b1);
113}
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