1 // SPDX-License-Identifier: GPL-2.0+
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
14 #include <mtd/cfi_flash.h>
16 /*-----------------------------------------------------------------------
20 /*-----------------------------------------------------------------------
21 * Set protection status for monitor sectors
23 * The monitor is always located in the _first_ Flash bank.
24 * If necessary you have to map the second bank at lower addresses.
27 flash_protect(int flag, ulong from, ulong to, flash_info_t *info)
33 /* Do nothing if input data is bad. */
34 if (!info || info->sector_count == 0 || info->size == 0 || to < from) {
38 s_end = info->sector_count - 1; /* index of last sector */
39 b_end = info->start[0] + info->size - 1; /* bank end address */
41 debug("%s %s: from 0x%08lX to 0x%08lX\n", __func__,
42 (flag & FLAG_PROTECT_SET) ? "ON" :
43 (flag & FLAG_PROTECT_CLEAR) ? "OFF" : "???",
46 /* There is nothing to do if we have no data about the flash
47 * or the protect range and flash range don't overlap.
49 if (info->flash_id == FLASH_UNKNOWN ||
50 to < info->start[0] || from > b_end) {
54 for (i=0; i<info->sector_count; ++i) {
55 ulong end; /* last address in current sect */
57 end = (i == s_end) ? b_end : info->start[i + 1] - 1;
59 /* Update protection if any part of the sector
60 * is in the specified range.
62 if (from <= end && to >= info->start[i]) {
63 if (flag & FLAG_PROTECT_CLEAR) {
64 #if defined(CONFIG_SYS_FLASH_PROTECTION)
65 flash_real_protect(info, i, 0);
68 #endif /* CONFIG_SYS_FLASH_PROTECTION */
69 debug("protect off %d\n", i);
71 else if (flag & FLAG_PROTECT_SET) {
72 #if defined(CONFIG_SYS_FLASH_PROTECTION)
73 flash_real_protect(info, i, 1);
76 #endif /* CONFIG_SYS_FLASH_PROTECTION */
77 debug("protect on %d\n", i);
83 /*-----------------------------------------------------------------------
92 for (i = 0, info = &flash_info[0]; i < CFI_FLASH_BANKS; ++i, ++info) {
93 if (info->flash_id != FLASH_UNKNOWN &&
94 addr >= info->start[0] &&
95 /* WARNING - The '- 1' is needed if the flash
96 * is at the end of the address space, since
97 * info->start[0] + info->size wraps back to 0.
98 * Please don't change this unless you understand this.
100 addr <= info->start[0] + info->size - 1) {
108 /*-----------------------------------------------------------------------
109 * Copy memory to flash.
110 * Make sure all target addresses are within Flash bounds,
111 * and no protected sectors are hit.
114 * ERR_TIMEOUT 1 - write timeout
115 * ERR_NOT_ERASED 2 - Flash not erased
116 * ERR_PROTECTED 4 - target range includes protected sectors
117 * ERR_INVAL 8 - target address not in Flash memory
118 * ERR_ALIGN 16 - target address not aligned on boundary
119 * (only some targets require alignment)
122 flash_write(char *src, ulong addr, ulong cnt)
125 ulong end = addr + cnt - 1;
126 flash_info_t *info_first = addr2info(addr);
127 flash_info_t *info_last = addr2info(end);
129 __maybe_unused char *src_orig = src;
130 __maybe_unused char *addr_orig = (char *)addr;
131 __maybe_unused ulong cnt_orig = cnt;
137 if (!info_first || !info_last) {
141 for (info = info_first; info <= info_last; ++info) {
142 ulong b_end = info->start[0] + info->size; /* bank end addr */
143 short s_end = info->sector_count - 1;
144 for (i=0; i<info->sector_count; ++i) {
145 ulong e_addr = (i == s_end) ? b_end : info->start[i + 1];
147 if ((end >= info->start[i]) && (addr < e_addr) &&
148 (info->protect[i] != 0) ) {
149 return (ERR_PROTECTED);
154 /* finally write data to flash */
155 for (info = info_first; info <= info_last && cnt>0; ++info) {
158 len = info->start[0] + info->size - addr;
161 if ((i = write_buff(info, (uchar *)src, addr, len)) != 0) {
169 #if defined(CONFIG_FLASH_VERIFY)
170 if (memcmp(src_orig, addr_orig, cnt_orig)) {
171 printf("\nVerify failed!\n");
172 return ERR_PROG_ERROR;
174 #endif /* CONFIG_SYS_FLASH_VERIFY_AFTER_WRITE */
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 puts("Flash Programming Aborted\n");
215 printf ("%s[%d] FIXME: rc=%d\n", __FILE__, __LINE__, err);