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wdenkaffae2b2002-08-17 09:36:01 +00001/*
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
wdenk7e780362004-04-08 22:31:29 +000024/* #define DEBUG */
25
wdenkaffae2b2002-08-17 09:36:01 +000026#include <common.h>
27#include <flash.h>
28
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020029#if !defined(CONFIG_SYS_NO_FLASH)
Stefan Roeseca5def32010-08-31 10:00:10 +020030#include <mtd/cfi_flash.h>
wdenkaffae2b2002-08-17 09:36:01 +000031
Marian Balakowicze6f2e902005-10-11 19:09:42 +020032extern flash_info_t flash_info[]; /* info for FLASH chips */
wdenkaffae2b2002-08-17 09:36:01 +000033
34/*-----------------------------------------------------------------------
35 * Functions
36 */
37
38/*-----------------------------------------------------------------------
39 * Set protection status for monitor sectors
40 *
41 * The monitor is always located in the _first_ Flash bank.
42 * If necessary you have to map the second bank at lower addresses.
43 */
44void
45flash_protect (int flag, ulong from, ulong to, flash_info_t *info)
46{
Mike Frysingera4e8d9f2010-07-28 23:45:03 -040047 ulong b_end;
48 short s_end;
wdenkaffae2b2002-08-17 09:36:01 +000049 int i;
50
51 /* Do nothing if input data is bad. */
Mike Frysingera4e8d9f2010-07-28 23:45:03 -040052 if (!info || info->sector_count == 0 || info->size == 0 || to < from) {
wdenkaffae2b2002-08-17 09:36:01 +000053 return;
54 }
55
Mike Frysingera4e8d9f2010-07-28 23:45:03 -040056 s_end = info->sector_count - 1; /* index of last sector */
57 b_end = info->start[0] + info->size - 1; /* bank end address */
58
Eugene OBriend2f68002007-07-31 10:24:56 +020059 debug ("flash_protect %s: from 0x%08lX to 0x%08lX\n",
60 (flag & FLAG_PROTECT_SET) ? "ON" :
61 (flag & FLAG_PROTECT_CLEAR) ? "OFF" : "???",
62 from, to);
63
wdenkaffae2b2002-08-17 09:36:01 +000064 /* There is nothing to do if we have no data about the flash
65 * or the protect range and flash range don't overlap.
66 */
67 if (info->flash_id == FLASH_UNKNOWN ||
68 to < info->start[0] || from > b_end) {
69 return;
70 }
71
72 for (i=0; i<info->sector_count; ++i) {
73 ulong end; /* last address in current sect */
74
75 end = (i == s_end) ? b_end : info->start[i + 1] - 1;
76
77 /* Update protection if any part of the sector
78 * is in the specified range.
79 */
80 if (from <= end && to >= info->start[i]) {
81 if (flag & FLAG_PROTECT_CLEAR) {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020082#if defined(CONFIG_SYS_FLASH_PROTECTION)
wdenkaffae2b2002-08-17 09:36:01 +000083 flash_real_protect(info, i, 0);
84#else
85 info->protect[i] = 0;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020086#endif /* CONFIG_SYS_FLASH_PROTECTION */
wdenk7e780362004-04-08 22:31:29 +000087 debug ("protect off %d\n", i);
wdenkaffae2b2002-08-17 09:36:01 +000088 }
89 else if (flag & FLAG_PROTECT_SET) {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020090#if defined(CONFIG_SYS_FLASH_PROTECTION)
wdenkaffae2b2002-08-17 09:36:01 +000091 flash_real_protect(info, i, 1);
92#else
93 info->protect[i] = 1;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020094#endif /* CONFIG_SYS_FLASH_PROTECTION */
wdenk7e780362004-04-08 22:31:29 +000095 debug ("protect on %d\n", i);
wdenkaffae2b2002-08-17 09:36:01 +000096 }
97 }
98 }
99}
100
101/*-----------------------------------------------------------------------
102 */
103
104flash_info_t *
105addr2info (ulong addr)
106{
107#ifndef CONFIG_SPD823TS
108 flash_info_t *info;
109 int i;
110
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200111 for (i=0, info = &flash_info[0]; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i, ++info) {
wdenkaffae2b2002-08-17 09:36:01 +0000112 if (info->flash_id != FLASH_UNKNOWN &&
113 addr >= info->start[0] &&
114 /* WARNING - The '- 1' is needed if the flash
115 * is at the end of the address space, since
116 * info->start[0] + info->size wraps back to 0.
117 * Please don't change this unless you understand this.
118 */
119 addr <= info->start[0] + info->size - 1) {
120 return (info);
121 }
122 }
123#endif /* CONFIG_SPD823TS */
124
125 return (NULL);
126}
127
128/*-----------------------------------------------------------------------
129 * Copy memory to flash.
130 * Make sure all target addresses are within Flash bounds,
131 * and no protected sectors are hit.
132 * Returns:
133 * ERR_OK 0 - OK
134 * ERR_TIMOUT 1 - write timeout
135 * ERR_NOT_ERASED 2 - Flash not erased
136 * ERR_PROTECTED 4 - target range includes protected sectors
137 * ERR_INVAL 8 - target address not in Flash memory
138 * ERR_ALIGN 16 - target address not aligned on boundary
139 * (only some targets require alignment)
140 */
141int
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200142flash_write (char *src, ulong addr, ulong cnt)
wdenkaffae2b2002-08-17 09:36:01 +0000143{
144#ifdef CONFIG_SPD823TS
145 return (ERR_TIMOUT); /* any other error codes are possible as well */
146#else
147 int i;
148 ulong end = addr + cnt - 1;
149 flash_info_t *info_first = addr2info (addr);
150 flash_info_t *info_last = addr2info (end );
151 flash_info_t *info;
Stefan Roese352ef3f2013-04-04 15:53:14 +0200152 __maybe_unused char *src_orig = src;
153 __maybe_unused char *addr_orig = (char *)addr;
154 __maybe_unused ulong cnt_orig = cnt;
wdenkaffae2b2002-08-17 09:36:01 +0000155
156 if (cnt == 0) {
157 return (ERR_OK);
158 }
159
160 if (!info_first || !info_last) {
161 return (ERR_INVAL);
162 }
163
164 for (info = info_first; info <= info_last; ++info) {
165 ulong b_end = info->start[0] + info->size; /* bank end addr */
166 short s_end = info->sector_count - 1;
167 for (i=0; i<info->sector_count; ++i) {
168 ulong e_addr = (i == s_end) ? b_end : info->start[i + 1];
169
170 if ((end >= info->start[i]) && (addr < e_addr) &&
171 (info->protect[i] != 0) ) {
172 return (ERR_PROTECTED);
173 }
174 }
175 }
176
177 /* finally write data to flash */
178 for (info = info_first; info <= info_last && cnt>0; ++info) {
179 ulong len;
180
181 len = info->start[0] + info->size - addr;
182 if (len > cnt)
183 len = cnt;
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200184 if ((i = write_buff(info, (uchar *)src, addr, len)) != 0) {
wdenkaffae2b2002-08-17 09:36:01 +0000185 return (i);
186 }
187 cnt -= len;
188 addr += len;
189 src += len;
190 }
Stefan Roese352ef3f2013-04-04 15:53:14 +0200191
192#if defined(CONFIG_FLASH_VERIFY)
193 if (memcmp(src_orig, addr_orig, cnt_orig)) {
194 printf("\nVerify failed!\n");
195 return ERR_PROG_ERROR;
196 }
197#endif /* CONFIG_SYS_FLASH_VERIFY_AFTER_WRITE */
198
wdenkaffae2b2002-08-17 09:36:01 +0000199 return (ERR_OK);
200#endif /* CONFIG_SPD823TS */
201}
202
203/*-----------------------------------------------------------------------
204 */
205
206void flash_perror (int err)
207{
208 switch (err) {
209 case ERR_OK:
210 break;
211 case ERR_TIMOUT:
212 puts ("Timeout writing to Flash\n");
213 break;
214 case ERR_NOT_ERASED:
215 puts ("Flash not Erased\n");
216 break;
217 case ERR_PROTECTED:
218 puts ("Can't write to protected Flash sectors\n");
219 break;
220 case ERR_INVAL:
221 puts ("Outside available Flash\n");
222 break;
223 case ERR_ALIGN:
224 puts ("Start and/or end address not on sector boundary\n");
225 break;
226 case ERR_UNKNOWN_FLASH_VENDOR:
227 puts ("Unknown Vendor of Flash\n");
228 break;
229 case ERR_UNKNOWN_FLASH_TYPE:
230 puts ("Unknown Type of Flash\n");
231 break;
232 case ERR_PROG_ERROR:
233 puts ("General Flash Programming Error\n");
234 break;
Joe Hershbergerde15a062012-08-17 15:36:41 -0500235 case ERR_ABORTED:
236 puts("Flash Programming Aborted\n");
237 break;
wdenkaffae2b2002-08-17 09:36:01 +0000238 default:
239 printf ("%s[%d] FIXME: rc=%d\n", __FILE__, __LINE__, err);
240 break;
241 }
242}
243
244/*-----------------------------------------------------------------------
245 */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200246#endif /* !CONFIG_SYS_NO_FLASH */