3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * SPDX-License-Identifier: GPL-2.0+
13 #if !defined(CONFIG_SYS_NO_FLASH)
14 #include <mtd/cfi_flash.h>
16 extern flash_info_t flash_info
[]; /* info for FLASH chips */
18 /*-----------------------------------------------------------------------
22 /*-----------------------------------------------------------------------
23 * Set protection status for monitor sectors
25 * The monitor is always located in the _first_ Flash bank.
26 * If necessary you have to map the second bank at lower addresses.
29 flash_protect (int flag
, ulong from
, ulong to
, flash_info_t
*info
)
35 /* Do nothing if input data is bad. */
36 if (!info
|| info
->sector_count
== 0 || info
->size
== 0 || to
< from
) {
40 s_end
= info
->sector_count
- 1; /* index of last sector */
41 b_end
= info
->start
[0] + info
->size
- 1; /* bank end address */
43 debug ("flash_protect %s: from 0x%08lX to 0x%08lX\n",
44 (flag
& FLAG_PROTECT_SET
) ? "ON" :
45 (flag
& FLAG_PROTECT_CLEAR
) ? "OFF" : "???",
48 /* There is nothing to do if we have no data about the flash
49 * or the protect range and flash range don't overlap.
51 if (info
->flash_id
== FLASH_UNKNOWN
||
52 to
< info
->start
[0] || from
> b_end
) {
56 for (i
=0; i
<info
->sector_count
; ++i
) {
57 ulong end
; /* last address in current sect */
59 end
= (i
== s_end
) ? b_end
: info
->start
[i
+ 1] - 1;
61 /* Update protection if any part of the sector
62 * is in the specified range.
64 if (from
<= end
&& to
>= info
->start
[i
]) {
65 if (flag
& FLAG_PROTECT_CLEAR
) {
66 #if defined(CONFIG_SYS_FLASH_PROTECTION)
67 flash_real_protect(info
, i
, 0);
70 #endif /* CONFIG_SYS_FLASH_PROTECTION */
71 debug ("protect off %d\n", i
);
73 else if (flag
& FLAG_PROTECT_SET
) {
74 #if defined(CONFIG_SYS_FLASH_PROTECTION)
75 flash_real_protect(info
, i
, 1);
78 #endif /* CONFIG_SYS_FLASH_PROTECTION */
79 debug ("protect on %d\n", i
);
85 /*-----------------------------------------------------------------------
89 addr2info (ulong addr
)
94 for (i
=0, info
= &flash_info
[0]; i
<CONFIG_SYS_MAX_FLASH_BANKS
; ++i
, ++info
) {
95 if (info
->flash_id
!= FLASH_UNKNOWN
&&
96 addr
>= info
->start
[0] &&
97 /* WARNING - The '- 1' is needed if the flash
98 * is at the end of the address space, since
99 * info->start[0] + info->size wraps back to 0.
100 * Please don't change this unless you understand this.
102 addr
<= info
->start
[0] + info
->size
- 1) {
110 /*-----------------------------------------------------------------------
111 * Copy memory to flash.
112 * Make sure all target addresses are within Flash bounds,
113 * and no protected sectors are hit.
116 * ERR_TIMOUT 1 - write timeout
117 * ERR_NOT_ERASED 2 - Flash not erased
118 * ERR_PROTECTED 4 - target range includes protected sectors
119 * ERR_INVAL 8 - target address not in Flash memory
120 * ERR_ALIGN 16 - target address not aligned on boundary
121 * (only some targets require alignment)
124 flash_write (char *src
, ulong addr
, ulong cnt
)
127 ulong end
= addr
+ cnt
- 1;
128 flash_info_t
*info_first
= addr2info (addr
);
129 flash_info_t
*info_last
= addr2info (end
);
131 __maybe_unused
char *src_orig
= src
;
132 __maybe_unused
char *addr_orig
= (char *)addr
;
133 __maybe_unused ulong cnt_orig
= cnt
;
139 if (!info_first
|| !info_last
) {
143 for (info
= info_first
; info
<= info_last
; ++info
) {
144 ulong b_end
= info
->start
[0] + info
->size
; /* bank end addr */
145 short s_end
= info
->sector_count
- 1;
146 for (i
=0; i
<info
->sector_count
; ++i
) {
147 ulong e_addr
= (i
== s_end
) ? b_end
: info
->start
[i
+ 1];
149 if ((end
>= info
->start
[i
]) && (addr
< e_addr
) &&
150 (info
->protect
[i
] != 0) ) {
151 return (ERR_PROTECTED
);
156 /* finally write data to flash */
157 for (info
= info_first
; info
<= info_last
&& cnt
>0; ++info
) {
160 len
= info
->start
[0] + info
->size
- addr
;
163 if ((i
= write_buff(info
, (uchar
*)src
, addr
, len
)) != 0) {
171 #if defined(CONFIG_FLASH_VERIFY)
172 if (memcmp(src_orig
, addr_orig
, cnt_orig
)) {
173 printf("\nVerify failed!\n");
174 return ERR_PROG_ERROR
;
176 #endif /* CONFIG_SYS_FLASH_VERIFY_AFTER_WRITE */
181 /*-----------------------------------------------------------------------
184 void flash_perror (int err
)
190 puts ("Timeout writing to Flash\n");
193 puts ("Flash not Erased\n");
196 puts ("Can't write to protected Flash sectors\n");
199 puts ("Outside available Flash\n");
202 puts ("Start and/or end address not on sector boundary\n");
204 case ERR_UNKNOWN_FLASH_VENDOR
:
205 puts ("Unknown Vendor of Flash\n");
207 case ERR_UNKNOWN_FLASH_TYPE
:
208 puts ("Unknown Type of Flash\n");
211 puts ("General Flash Programming Error\n");
214 puts("Flash Programming Aborted\n");
217 printf ("%s[%d] FIXME: rc=%d\n", __FILE__
, __LINE__
, err
);
222 /*-----------------------------------------------------------------------
224 #endif /* !CONFIG_SYS_NO_FLASH */