3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
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.
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.
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,
29 #if !defined(CONFIG_SYS_NO_FLASH)
31 extern flash_info_t flash_info[]; /* info for FLASH chips */
33 /*-----------------------------------------------------------------------
37 /*-----------------------------------------------------------------------
38 * Set protection status for monitor sectors
40 * The monitor is always located in the _first_ Flash bank.
41 * If necessary you have to map the second bank at lower addresses.
44 flash_protect (int flag, ulong from, ulong to, flash_info_t *info)
50 /* Do nothing if input data is bad. */
51 if (!info || info->sector_count == 0 || info->size == 0 || to < from) {
55 s_end = info->sector_count - 1; /* index of last sector */
56 b_end = info->start[0] + info->size - 1; /* bank end address */
58 debug ("flash_protect %s: from 0x%08lX to 0x%08lX\n",
59 (flag & FLAG_PROTECT_SET) ? "ON" :
60 (flag & FLAG_PROTECT_CLEAR) ? "OFF" : "???",
63 /* There is nothing to do if we have no data about the flash
64 * or the protect range and flash range don't overlap.
66 if (info->flash_id == FLASH_UNKNOWN ||
67 to < info->start[0] || from > b_end) {
71 for (i=0; i<info->sector_count; ++i) {
72 ulong end; /* last address in current sect */
74 end = (i == s_end) ? b_end : info->start[i + 1] - 1;
76 /* Update protection if any part of the sector
77 * is in the specified range.
79 if (from <= end && to >= info->start[i]) {
80 if (flag & FLAG_PROTECT_CLEAR) {
81 #if defined(CONFIG_SYS_FLASH_PROTECTION)
82 flash_real_protect(info, i, 0);
85 #endif /* CONFIG_SYS_FLASH_PROTECTION */
86 debug ("protect off %d\n", i);
88 else if (flag & FLAG_PROTECT_SET) {
89 #if defined(CONFIG_SYS_FLASH_PROTECTION)
90 flash_real_protect(info, i, 1);
93 #endif /* CONFIG_SYS_FLASH_PROTECTION */
94 debug ("protect on %d\n", i);
100 /*-----------------------------------------------------------------------
104 addr2info (ulong addr)
106 #ifndef CONFIG_SPD823TS
110 for (i=0, info = &flash_info[0]; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i, ++info) {
111 if (info->flash_id != FLASH_UNKNOWN &&
112 addr >= info->start[0] &&
113 /* WARNING - The '- 1' is needed if the flash
114 * is at the end of the address space, since
115 * info->start[0] + info->size wraps back to 0.
116 * Please don't change this unless you understand this.
118 addr <= info->start[0] + info->size - 1) {
122 #endif /* CONFIG_SPD823TS */
127 /*-----------------------------------------------------------------------
128 * Copy memory to flash.
129 * Make sure all target addresses are within Flash bounds,
130 * and no protected sectors are hit.
133 * ERR_TIMOUT 1 - write timeout
134 * ERR_NOT_ERASED 2 - Flash not erased
135 * ERR_PROTECTED 4 - target range includes protected sectors
136 * ERR_INVAL 8 - target address not in Flash memory
137 * ERR_ALIGN 16 - target address not aligned on boundary
138 * (only some targets require alignment)
141 flash_write (char *src, ulong addr, ulong cnt)
143 #ifdef CONFIG_SPD823TS
144 return (ERR_TIMOUT); /* any other error codes are possible as well */
147 ulong end = addr + cnt - 1;
148 flash_info_t *info_first = addr2info (addr);
149 flash_info_t *info_last = addr2info (end );
156 if (!info_first || !info_last) {
160 for (info = info_first; info <= info_last; ++info) {
161 ulong b_end = info->start[0] + info->size; /* bank end addr */
162 short s_end = info->sector_count - 1;
163 for (i=0; i<info->sector_count; ++i) {
164 ulong e_addr = (i == s_end) ? b_end : info->start[i + 1];
166 if ((end >= info->start[i]) && (addr < e_addr) &&
167 (info->protect[i] != 0) ) {
168 return (ERR_PROTECTED);
173 /* finally write data to flash */
174 for (info = info_first; info <= info_last && cnt>0; ++info) {
177 len = info->start[0] + info->size - addr;
180 if ((i = write_buff(info, (uchar *)src, addr, len)) != 0) {
188 #endif /* CONFIG_SPD823TS */
191 /*-----------------------------------------------------------------------
194 void flash_perror (int err)
200 puts ("Timeout writing to Flash\n");
203 puts ("Flash not Erased\n");
206 puts ("Can't write to protected Flash sectors\n");
209 puts ("Outside available Flash\n");
212 puts ("Start and/or end address not on sector boundary\n");
214 case ERR_UNKNOWN_FLASH_VENDOR:
215 puts ("Unknown Vendor of Flash\n");
217 case ERR_UNKNOWN_FLASH_TYPE:
218 puts ("Unknown Type of Flash\n");
221 puts ("General Flash Programming Error\n");
224 printf ("%s[%d] FIXME: rc=%d\n", __FILE__, __LINE__, err);
229 /*-----------------------------------------------------------------------
231 #endif /* !CONFIG_SYS_NO_FLASH */