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)
46 ulong b_end = info->start[0] + info->size - 1; /* bank end address */
47 short s_end = info->sector_count - 1; /* index of last sector */
50 /* Do nothing if input data is bad. */
51 if (info->sector_count == 0 || info->size == 0 || to < from) {
55 debug ("flash_protect %s: from 0x%08lX to 0x%08lX\n",
56 (flag & FLAG_PROTECT_SET) ? "ON" :
57 (flag & FLAG_PROTECT_CLEAR) ? "OFF" : "???",
60 /* There is nothing to do if we have no data about the flash
61 * or the protect range and flash range don't overlap.
63 if (info->flash_id == FLASH_UNKNOWN ||
64 to < info->start[0] || from > b_end) {
68 for (i=0; i<info->sector_count; ++i) {
69 ulong end; /* last address in current sect */
71 end = (i == s_end) ? b_end : info->start[i + 1] - 1;
73 /* Update protection if any part of the sector
74 * is in the specified range.
76 if (from <= end && to >= info->start[i]) {
77 if (flag & FLAG_PROTECT_CLEAR) {
78 #if defined(CONFIG_SYS_FLASH_PROTECTION)
79 flash_real_protect(info, i, 0);
82 #endif /* CONFIG_SYS_FLASH_PROTECTION */
83 debug ("protect off %d\n", i);
85 else if (flag & FLAG_PROTECT_SET) {
86 #if defined(CONFIG_SYS_FLASH_PROTECTION)
87 flash_real_protect(info, i, 1);
90 #endif /* CONFIG_SYS_FLASH_PROTECTION */
91 debug ("protect on %d\n", i);
97 /*-----------------------------------------------------------------------
101 addr2info (ulong addr)
103 #ifndef CONFIG_SPD823TS
107 for (i=0, info = &flash_info[0]; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i, ++info) {
108 if (info->flash_id != FLASH_UNKNOWN &&
109 addr >= info->start[0] &&
110 /* WARNING - The '- 1' is needed if the flash
111 * is at the end of the address space, since
112 * info->start[0] + info->size wraps back to 0.
113 * Please don't change this unless you understand this.
115 addr <= info->start[0] + info->size - 1) {
119 #endif /* CONFIG_SPD823TS */
124 /*-----------------------------------------------------------------------
125 * Copy memory to flash.
126 * Make sure all target addresses are within Flash bounds,
127 * and no protected sectors are hit.
130 * ERR_TIMOUT 1 - write timeout
131 * ERR_NOT_ERASED 2 - Flash not erased
132 * ERR_PROTECTED 4 - target range includes protected sectors
133 * ERR_INVAL 8 - target address not in Flash memory
134 * ERR_ALIGN 16 - target address not aligned on boundary
135 * (only some targets require alignment)
138 flash_write (char *src, ulong addr, ulong cnt)
140 #ifdef CONFIG_SPD823TS
141 return (ERR_TIMOUT); /* any other error codes are possible as well */
144 ulong end = addr + cnt - 1;
145 flash_info_t *info_first = addr2info (addr);
146 flash_info_t *info_last = addr2info (end );
153 if (!info_first || !info_last) {
157 for (info = info_first; info <= info_last; ++info) {
158 ulong b_end = info->start[0] + info->size; /* bank end addr */
159 short s_end = info->sector_count - 1;
160 for (i=0; i<info->sector_count; ++i) {
161 ulong e_addr = (i == s_end) ? b_end : info->start[i + 1];
163 if ((end >= info->start[i]) && (addr < e_addr) &&
164 (info->protect[i] != 0) ) {
165 return (ERR_PROTECTED);
170 /* finally write data to flash */
171 for (info = info_first; info <= info_last && cnt>0; ++info) {
174 len = info->start[0] + info->size - addr;
177 if ((i = write_buff(info, (uchar *)src, addr, len)) != 0) {
185 #endif /* CONFIG_SPD823TS */
188 /*-----------------------------------------------------------------------
191 void flash_perror (int err)
197 puts ("Timeout writing to Flash\n");
200 puts ("Flash not Erased\n");
203 puts ("Can't write to protected Flash sectors\n");
206 puts ("Outside available Flash\n");
209 puts ("Start and/or end address not on sector boundary\n");
211 case ERR_UNKNOWN_FLASH_VENDOR:
212 puts ("Unknown Vendor of Flash\n");
214 case ERR_UNKNOWN_FLASH_TYPE:
215 puts ("Unknown Type of Flash\n");
218 puts ("General Flash Programming Error\n");
221 printf ("%s[%d] FIXME: rc=%d\n", __FILE__, __LINE__, err);
226 /*-----------------------------------------------------------------------
228 #endif /* !CONFIG_SYS_NO_FLASH */