blob: d9eccba1ea8375f06650687c10595e94a7a0c125 [file] [log] [blame]
wdenkaffae2b2002-08-17 09:36:01 +00001/*
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,
wdenk3b57fe02003-05-30 12:48:29 +000083 FLASH_BASE0_PRELIM+size_b0-monitor_flash_len,
wdenkaffae2b2002-08-17 09:36:01 +000084 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,
wdenk3b57fe02003-05-30 12:48:29 +000096 FLASH_BASE0_PRELIM+size_b0+size_b1-monitor_flash_len,
wdenkaffae2b2002-08-17 09:36:01 +000097 FLASH_BASE0_PRELIM+size_b0+size_b1-1,
98 &flash_info[1]);
wdenk8bde7f72003-06-27 21:31:46 +000099 /* monitor protection OFF by default (one is enough) */
100 flash_protect(FLAG_PROTECT_CLEAR,
wdenk3b57fe02003-05-30 12:48:29 +0000101 FLASH_BASE0_PRELIM+size_b0-monitor_flash_len,
wdenkaffae2b2002-08-17 09:36:01 +0000102 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}