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,
27 #if !defined(CFG_NO_FLASH)
29 extern flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
31 /*-----------------------------------------------------------------------
35 /*-----------------------------------------------------------------------
36 * Set protection status for monitor sectors
38 * The monitor is always located in the _first_ Flash bank.
39 * If necessary you have to map the second bank at lower addresses.
42 flash_protect (int flag, ulong from, ulong to, flash_info_t *info)
44 ulong b_end = info->start[0] + info->size - 1; /* bank end address */
45 short s_end = info->sector_count - 1; /* index of last sector */
48 /* Do nothing if input data is bad. */
49 if (info->sector_count == 0 || info->size == 0 || to < from) {
53 /* There is nothing to do if we have no data about the flash
54 * or the protect range and flash range don't overlap.
56 if (info->flash_id == FLASH_UNKNOWN ||
57 to < info->start[0] || from > b_end) {
61 for (i=0; i<info->sector_count; ++i) {
62 ulong end; /* last address in current sect */
64 end = (i == s_end) ? b_end : info->start[i + 1] - 1;
66 /* Update protection if any part of the sector
67 * is in the specified range.
69 if (from <= end && to >= info->start[i]) {
70 if (flag & FLAG_PROTECT_CLEAR) {
71 #if defined(CFG_FLASH_PROTECTION)
72 flash_real_protect(info, i, 0);
75 #endif /* CFG_FLASH_PROTECTION */
77 else if (flag & FLAG_PROTECT_SET) {
78 #if defined(CFG_FLASH_PROTECTION)
79 flash_real_protect(info, i, 1);
82 #endif /* CFG_FLASH_PROTECTION */
88 /*-----------------------------------------------------------------------
92 addr2info (ulong addr)
94 #ifndef CONFIG_SPD823TS
98 for (i=0, info=&flash_info[0]; i<CFG_MAX_FLASH_BANKS; ++i, ++info) {
99 if (info->flash_id != FLASH_UNKNOWN &&
100 addr >= info->start[0] &&
101 /* WARNING - The '- 1' is needed if the flash
102 * is at the end of the address space, since
103 * info->start[0] + info->size wraps back to 0.
104 * Please don't change this unless you understand this.
106 addr <= info->start[0] + info->size - 1) {
110 #endif /* CONFIG_SPD823TS */
115 /*-----------------------------------------------------------------------
116 * Copy memory to flash.
117 * Make sure all target addresses are within Flash bounds,
118 * and no protected sectors are hit.
121 * ERR_TIMOUT 1 - write timeout
122 * ERR_NOT_ERASED 2 - Flash not erased
123 * ERR_PROTECTED 4 - target range includes protected sectors
124 * ERR_INVAL 8 - target address not in Flash memory
125 * ERR_ALIGN 16 - target address not aligned on boundary
126 * (only some targets require alignment)
129 flash_write (uchar *src, ulong addr, ulong cnt)
131 #ifdef CONFIG_SPD823TS
132 return (ERR_TIMOUT); /* any other error codes are possible as well */
135 ulong end = addr + cnt - 1;
136 flash_info_t *info_first = addr2info (addr);
137 flash_info_t *info_last = addr2info (end );
144 if (!info_first || !info_last) {
148 for (info = info_first; info <= info_last; ++info) {
149 ulong b_end = info->start[0] + info->size; /* bank end addr */
150 short s_end = info->sector_count - 1;
151 for (i=0; i<info->sector_count; ++i) {
152 ulong e_addr = (i == s_end) ? b_end : info->start[i + 1];
154 if ((end >= info->start[i]) && (addr < e_addr) &&
155 (info->protect[i] != 0) ) {
156 return (ERR_PROTECTED);
161 /* finally write data to flash */
162 for (info = info_first; info <= info_last && cnt>0; ++info) {
165 len = info->start[0] + info->size - addr;
168 if ((i = write_buff(info, src, addr, len)) != 0) {
176 #endif /* CONFIG_SPD823TS */
179 /*-----------------------------------------------------------------------
182 void flash_perror (int err)
188 puts ("Timeout writing to Flash\n");
191 puts ("Flash not Erased\n");
194 puts ("Can't write to protected Flash sectors\n");
197 puts ("Outside available Flash\n");
200 puts ("Start and/or end address not on sector boundary\n");
202 case ERR_UNKNOWN_FLASH_VENDOR:
203 puts ("Unknown Vendor of Flash\n");
205 case ERR_UNKNOWN_FLASH_TYPE:
206 puts ("Unknown Type of Flash\n");
209 puts ("General Flash Programming Error\n");
212 printf ("%s[%d] FIXME: rc=%d\n", __FILE__, __LINE__, err);
217 /*-----------------------------------------------------------------------
219 #endif /* !CFG_NO_FLASH */