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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 uint pbcr;
47 unsigned long base_b0, base_b1;
48 int size_val = 0;
49
50 /* Init: no FLASHes known */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020051 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
wdenkaffae2b2002-08-17 09:36:01 +000052 flash_info[i].flash_id = FLASH_UNKNOWN;
53 }
54
55 /* Static FLASH Bank configuration here - FIXME XXX */
56
57 base_b0 = FLASH_BASE0_PRELIM;
58 size_b0 = flash_get_size ((vu_long *) base_b0, &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_b0, size_b0 << 20);
63 }
64
65 base_b1 = FLASH_BASE1_PRELIM;
66 size_b1 = flash_get_size ((vu_long *) base_b1, &flash_info[1]);
67
68 /* Re-do sizing to get full correct info */
69
70 if (size_b1) {
Stefan Roesed1c3b272009-09-09 16:25:29 +020071 mtdcr (EBC0_CFGADDR, PB0CR);
72 pbcr = mfdcr (EBC0_CFGDATA);
73 mtdcr (EBC0_CFGADDR, PB0CR);
wdenkaffae2b2002-08-17 09:36:01 +000074 base_b1 = -size_b1;
75 switch (size_b1) {
76 case 1 << 20:
77 size_val = 0;
78 break;
79 case 2 << 20:
80 size_val = 1;
81 break;
82 case 4 << 20:
83 size_val = 2;
84 break;
85 case 8 << 20:
86 size_val = 3;
87 break;
88 case 16 << 20:
89 size_val = 4;
90 break;
91 }
92 pbcr = (pbcr & 0x0001ffff) | base_b1 | (size_val << 17);
Stefan Roesed1c3b272009-09-09 16:25:29 +020093 mtdcr (EBC0_CFGDATA, pbcr);
94 /* printf("PB1CR = %x\n", pbcr); */
wdenkaffae2b2002-08-17 09:36:01 +000095 }
96
97 if (size_b0) {
Stefan Roesed1c3b272009-09-09 16:25:29 +020098 mtdcr (EBC0_CFGADDR, PB1CR);
99 pbcr = mfdcr (EBC0_CFGDATA);
100 mtdcr (EBC0_CFGADDR, PB1CR);
wdenkaffae2b2002-08-17 09:36:01 +0000101 base_b0 = base_b1 - size_b0;
102 switch (size_b1) {
103 case 1 << 20:
104 size_val = 0;
105 break;
106 case 2 << 20:
107 size_val = 1;
108 break;
109 case 4 << 20:
110 size_val = 2;
111 break;
112 case 8 << 20:
113 size_val = 3;
114 break;
115 case 16 << 20:
116 size_val = 4;
117 break;
118 }
119 pbcr = (pbcr & 0x0001ffff) | base_b0 | (size_val << 17);
Stefan Roesed1c3b272009-09-09 16:25:29 +0200120 mtdcr (EBC0_CFGDATA, pbcr);
121 /* printf("PB0CR = %x\n", pbcr); */
wdenkaffae2b2002-08-17 09:36:01 +0000122 }
123
124 size_b0 = flash_get_size ((vu_long *) base_b0, &flash_info[0]);
125
126 flash_get_offsets (base_b0, &flash_info[0]);
127
128 /* monitor protection ON by default */
129 flash_protect (FLAG_PROTECT_SET,
wdenk3b57fe02003-05-30 12:48:29 +0000130 base_b0 + size_b0 - monitor_flash_len,
wdenkaffae2b2002-08-17 09:36:01 +0000131 base_b0 + size_b0 - 1, &flash_info[0]);
132
133 if (size_b1) {
134 /* Re-do sizing to get full correct info */
135 size_b1 = flash_get_size ((vu_long *) base_b1, &flash_info[1]);
136
137 flash_get_offsets (base_b1, &flash_info[1]);
138
139 /* monitor protection ON by default */
140 flash_protect (FLAG_PROTECT_SET,
wdenk3b57fe02003-05-30 12:48:29 +0000141 base_b1 + size_b1 - monitor_flash_len,
wdenkaffae2b2002-08-17 09:36:01 +0000142 base_b1 + size_b1 - 1, &flash_info[1]);
143 /* monitor protection OFF by default (one is enough) */
144 flash_protect (FLAG_PROTECT_CLEAR,
wdenk3b57fe02003-05-30 12:48:29 +0000145 base_b0 + size_b0 - monitor_flash_len,
wdenkaffae2b2002-08-17 09:36:01 +0000146 base_b0 + size_b0 - 1, &flash_info[0]);
147 } else {
148 flash_info[1].flash_id = FLASH_UNKNOWN;
149 flash_info[1].sector_count = -1;
150 }
151
152 flash_info[0].size = size_b0;
153 flash_info[1].size = size_b1;
154
155 return (size_b0 + size_b1);
156}