blob: e4832ebf360fc98bda49a49360df3003bfb54ba3 [file] [log] [blame]
Stefan Roese8a316c92005-08-01 16:49:12 +02001/*
2 * (C) Copyright 2000
3 * Wolfgang Denk, DENX Software Engineering, wd@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/*
25 * Modified 4/5/2001
26 * Wait for completion of each sector erase command issued
27 * 4/5/2001
28 * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
29 */
30
31#include <common.h>
32#include <ppc4xx.h>
33#include <asm/processor.h>
34
35flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
36
37#undef DEBUG
38#ifdef DEBUG
39#define DEBUGF(x...) printf(x)
40#else
41#define DEBUGF(x...)
42#endif /* DEBUG */
43
44/*
45 * include common flash code (for amcc boards)
46 */
47#include "../common/flash.c"
48
49/*-----------------------------------------------------------------------
50 * Functions
51 */
52static ulong flash_get_size(vu_long * addr, flash_info_t * info);
53static void flash_get_offsets(ulong base, flash_info_t * info);
54
55unsigned long flash_init(void)
56{
57 unsigned long size_b0, size_b1;
58 int i;
59 uint pbcr;
60 unsigned long base_b0, base_b1;
61
62 /* Init: no FLASHes known */
63 for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
64 flash_info[i].flash_id = FLASH_UNKNOWN;
65 }
66
67 /* Static FLASH Bank configuration here - FIXME XXX */
68
69 size_b0 =
70 flash_get_size((vu_long *) FLASH_BASE0_PRELIM, &flash_info[0]);
71
72 if (flash_info[0].flash_id == FLASH_UNKNOWN) {
73 printf("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
74 size_b0, size_b0 << 20);
75 }
76
77 /* Only one bank */
78 if (CFG_MAX_FLASH_BANKS == 1) {
79 /* Setup offsets */
80 flash_get_offsets(FLASH_BASE0_PRELIM, &flash_info[0]);
81
82 /* Monitor protection ON by default */
83 (void)flash_protect(FLAG_PROTECT_SET,
84 CFG_MONITOR_BASE,
85 CFG_MONITOR_BASE + CFG_MONITOR_LEN - 1,
86 &flash_info[0]);
87#ifdef CFG_ENV_IS_IN_FLASH
88 (void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR,
89 CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,
90 &flash_info[0]);
91 (void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR_REDUND,
92 CFG_ENV_ADDR_REDUND + CFG_ENV_SECT_SIZE - 1,
93 &flash_info[0]);
94#endif
95
96 size_b1 = 0;
97 flash_info[0].size = size_b0;
98 }
99
100 /* 2 banks */
101 else {
102 size_b1 =
103 flash_get_size((vu_long *) FLASH_BASE1_PRELIM,
104 &flash_info[1]);
105
106 /* Re-do sizing to get full correct info */
107
108 if (size_b1) {
109 mtdcr(ebccfga, pb0cr);
110 pbcr = mfdcr(ebccfgd);
111 mtdcr(ebccfga, pb0cr);
112 base_b1 = -size_b1;
113 pbcr = (pbcr & 0x0001ffff) | base_b1 |
114 (((size_b1 / 1024 / 1024) - 1) << 17);
115 mtdcr(ebccfgd, pbcr);
116 /* printf("pb1cr = %x\n", pbcr); */
117 }
118
119 if (size_b0) {
120 mtdcr(ebccfga, pb1cr);
121 pbcr = mfdcr(ebccfgd);
122 mtdcr(ebccfga, pb1cr);
123 base_b0 = base_b1 - size_b0;
124 pbcr = (pbcr & 0x0001ffff) | base_b0 |
125 (((size_b0 / 1024 / 1024) - 1) << 17);
126 mtdcr(ebccfgd, pbcr);
127 /* printf("pb0cr = %x\n", pbcr); */
128 }
129
130 size_b0 = flash_get_size((vu_long *) base_b0, &flash_info[0]);
131
132 flash_get_offsets(base_b0, &flash_info[0]);
133
134 /* monitor protection ON by default */
135 (void)flash_protect(FLAG_PROTECT_SET,
136 base_b0 + size_b0 - CFG_MONITOR_LEN,
137 base_b0 + size_b0 - 1, &flash_info[0]);
138 /* Also protect sector containing initial power-up instruction */
139 /* (flash_protect() checks address range - other call ignored) */
140 (void)flash_protect(FLAG_PROTECT_SET,
141 0xFFFFFFFC, 0xFFFFFFFF, &flash_info[0]);
142 (void)flash_protect(FLAG_PROTECT_SET,
143 0xFFFFFFFC, 0xFFFFFFFF, &flash_info[1]);
144
145 if (size_b1) {
146 /* Re-do sizing to get full correct info */
147 size_b1 =
148 flash_get_size((vu_long *) base_b1, &flash_info[1]);
149
150 flash_get_offsets(base_b1, &flash_info[1]);
151
152 /* monitor protection ON by default */
153 (void)flash_protect(FLAG_PROTECT_SET,
154 base_b1 + size_b1 - CFG_MONITOR_LEN,
155 base_b1 + size_b1 - 1,
156 &flash_info[1]);
157 /* monitor protection OFF by default (one is enough) */
158 (void)flash_protect(FLAG_PROTECT_CLEAR,
159 base_b0 + size_b0 - CFG_MONITOR_LEN,
160 base_b0 + size_b0 - 1,
161 &flash_info[0]);
162 } else {
163 flash_info[1].flash_id = FLASH_UNKNOWN;
164 flash_info[1].sector_count = -1;
165 }
166
167 flash_info[0].size = size_b0;
168 flash_info[1].size = size_b1;
169 } /* else 2 banks */
170 return (size_b0 + size_b1);
171}
172
173static void flash_get_offsets(ulong base, flash_info_t * info)
174{
175 int i;
176
177 /* set up sector start address table */
178 if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
179 (info->flash_id == FLASH_AM040)) {
180 for (i = 0; i < info->sector_count; i++)
181 info->start[i] = base + (i * 0x00010000);
182 } else {
183 if (info->flash_id & FLASH_BTYPE) {
184 /* set sector offsets for bottom boot block type */
185 info->start[0] = base + 0x00000000;
186 info->start[1] = base + 0x00004000;
187 info->start[2] = base + 0x00006000;
188 info->start[3] = base + 0x00008000;
189 for (i = 4; i < info->sector_count; i++) {
190 info->start[i] =
191 base + (i * 0x00010000) - 0x00030000;
192 }
193 } else {
194 /* set sector offsets for top boot block type */
195 i = info->sector_count - 1;
196 info->start[i--] = base + info->size - 0x00004000;
197 info->start[i--] = base + info->size - 0x00006000;
198 info->start[i--] = base + info->size - 0x00008000;
199 for (; i >= 0; i--) {
200 info->start[i] = base + i * 0x00010000;
201 }
202 }
203 }
204}