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
)
91 #ifndef CONFIG_SPD823TS
95 for (i
=0, info
= &flash_info
[0]; i
<CONFIG_SYS_MAX_FLASH_BANKS
; ++i
, ++info
) {
96 if (info
->flash_id
!= FLASH_UNKNOWN
&&
97 addr
>= info
->start
[0] &&
98 /* WARNING - The '- 1' is needed if the flash
99 * is at the end of the address space, since
100 * info->start[0] + info->size wraps back to 0.
101 * Please don't change this unless you understand this.
103 addr
<= info
->start
[0] + info
->size
- 1) {
107 #endif /* CONFIG_SPD823TS */
112 /*-----------------------------------------------------------------------
113 * Copy memory to flash.
114 * Make sure all target addresses are within Flash bounds,
115 * and no protected sectors are hit.
118 * ERR_TIMOUT 1 - write timeout
119 * ERR_NOT_ERASED 2 - Flash not erased
120 * ERR_PROTECTED 4 - target range includes protected sectors
121 * ERR_INVAL 8 - target address not in Flash memory
122 * ERR_ALIGN 16 - target address not aligned on boundary
123 * (only some targets require alignment)
126 flash_write (char *src
, ulong addr
, ulong cnt
)
128 #ifdef CONFIG_SPD823TS
129 return (ERR_TIMOUT
); /* any other error codes are possible as well */
132 ulong end
= addr
+ cnt
- 1;
133 flash_info_t
*info_first
= addr2info (addr
);
134 flash_info_t
*info_last
= addr2info (end
);
136 __maybe_unused
char *src_orig
= src
;
137 __maybe_unused
char *addr_orig
= (char *)addr
;
138 __maybe_unused ulong cnt_orig
= cnt
;
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
, (uchar
*)src
, addr
, len
)) != 0) {
176 #if defined(CONFIG_FLASH_VERIFY)
177 if (memcmp(src_orig
, addr_orig
, cnt_orig
)) {
178 printf("\nVerify failed!\n");
179 return ERR_PROG_ERROR
;
181 #endif /* CONFIG_SYS_FLASH_VERIFY_AFTER_WRITE */
184 #endif /* CONFIG_SPD823TS */
187 /*-----------------------------------------------------------------------
190 void flash_perror (int err
)
196 puts ("Timeout writing to Flash\n");
199 puts ("Flash not Erased\n");
202 puts ("Can't write to protected Flash sectors\n");
205 puts ("Outside available Flash\n");
208 puts ("Start and/or end address not on sector boundary\n");
210 case ERR_UNKNOWN_FLASH_VENDOR
:
211 puts ("Unknown Vendor of Flash\n");
213 case ERR_UNKNOWN_FLASH_TYPE
:
214 puts ("Unknown Type of Flash\n");
217 puts ("General Flash Programming Error\n");
220 puts("Flash Programming Aborted\n");
223 printf ("%s[%d] FIXME: rc=%d\n", __FILE__
, __LINE__
, err
);
228 /*-----------------------------------------------------------------------
230 #endif /* !CONFIG_SYS_NO_FLASH */