3 * Heiko Schocher, DENX Software Engineering, <hs@denx.de>
6 * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
8 * (C) Copyright 2001-2005
9 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
11 * See file CREDITS for list of people who contributed to this
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License as
16 * published by the Free Software Foundation; either version 2 of
17 * the License, or (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
34 flash_info_t flash_info
[CONFIG_SYS_MAX_FLASH_BANKS
]; /* info for FLASH chips */
36 #if defined(CONFIG_ENV_IS_IN_FLASH)
37 # ifndef CONFIG_ENV_ADDR
38 # define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET)
40 # ifndef CONFIG_ENV_SIZE
41 # define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
43 # ifndef CONFIG_ENV_SECT_SIZE
44 # define CONFIG_ENV_SECT_SIZE CONFIG_ENV_SIZE
48 /*-----------------------------------------------------------------------
51 #define FLAG_PROTECT_SET 0x01
52 #define FLAG_PROTECT_CLEAR 0x02
54 /* Board support for 1 or 2 flash devices */
55 #undef FLASH_PORT_WIDTH32
56 #undef FLASH_PORT_WIDTH16
57 #define FLASH_PORT_WIDTH8
59 #ifdef FLASH_PORT_WIDTH16
60 #define FLASH_PORT_WIDTH ushort
61 #define FLASH_PORT_WIDTHV vu_short
62 #elif FLASH_PORT_WIDTH32
63 #define FLASH_PORT_WIDTH ulong
64 #define FLASH_PORT_WIDTHV vu_long
65 #else /* FLASH_PORT_WIDTH8 */
66 #define FLASH_PORT_WIDTH uchar
67 #define FLASH_PORT_WIDTHV vu_char
70 #define FPW FLASH_PORT_WIDTH
71 #define FPWV FLASH_PORT_WIDTHV
73 /*-----------------------------------------------------------------------
76 static ulong
flash_get_size (FPWV
* addr
, flash_info_t
* info
);
77 static int write_data (flash_info_t
* info
, ulong dest
, FPW data
);
78 static void flash_get_offsets (ulong base
, flash_info_t
* info
);
80 /*-----------------------------------------------------------------------
83 unsigned long flash_init (void)
85 unsigned long size_b0
;
87 volatile immap_t
* immr
= (immap_t
*)CONFIG_SYS_IMMR
;
88 volatile memctl8260_t
*memctl
= &immr
->im_memctl
;
90 /* Init: no FLASHes known */
91 for (i
= 0; i
< CONFIG_SYS_MAX_FLASH_BANKS
; ++i
) {
92 flash_info
[i
].flash_id
= FLASH_UNKNOWN
;
95 /* Static FLASH Bank configuration here - FIXME XXX */
96 size_b0
= flash_get_size ((FPW
*) CONFIG_SYS_FLASH0_BASE
, &flash_info
[0]);
98 if (flash_info
[0].flash_id
== FLASH_UNKNOWN
) {
99 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
100 size_b0
, size_b0
<< 20);
103 memctl
->memc_or0
= 0xff800060;
104 memctl
->memc_br0
= 0xff800801;
106 flash_get_offsets (0xff800000, &flash_info
[0]);
108 #if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
109 /* monitor protection ON by default */
110 (void) flash_protect (FLAG_PROTECT_SET
,
111 CONFIG_SYS_MONITOR_BASE
,
112 CONFIG_SYS_MONITOR_BASE
+ monitor_flash_len
- 1,
116 #ifdef CONFIG_ENV_IS_IN_FLASH
117 /* ENV protection ON by default */
118 flash_protect (FLAG_PROTECT_SET
,
120 CONFIG_ENV_ADDR
+ CONFIG_ENV_SIZE
- 1,
124 flash_info
[0].size
= size_b0
;
129 /*-----------------------------------------------------------------------
131 static void flash_get_offsets (ulong base
, flash_info_t
* info
)
135 if (info
->flash_id
== FLASH_UNKNOWN
) {
139 if ((info
->flash_id
& FLASH_VENDMASK
) == FLASH_MAN_INTEL
) {
140 for (i
= 0; i
< info
->sector_count
; i
++) {
141 info
->start
[i
] = base
+ (i
* 0x00020000);
146 /*-----------------------------------------------------------------------
148 void flash_print_info (flash_info_t
* info
)
152 if (info
->flash_id
== FLASH_UNKNOWN
) {
153 printf ("missing or unknown FLASH type\n");
157 switch (info
->flash_id
& FLASH_VENDMASK
) {
158 case FLASH_MAN_INTEL
:
162 printf ("Unknown Vendor ");
166 switch (info
->flash_id
& FLASH_TYPEMASK
) {
167 case FLASH_28F320J3A
:
168 printf ("28F320J3A\n");
170 case FLASH_28F640J3A
:
171 printf ("28F640J3A\n");
173 case FLASH_28F128J3A
:
174 printf ("28F128J3A\n");
177 printf ("Unknown Chip Type\n");
181 printf (" Size: %ld MB in %d Sectors\n",
182 info
->size
>> 20, info
->sector_count
);
184 printf (" Sector Start Addresses:");
185 for (i
= 0; i
< info
->sector_count
; ++i
) {
190 info
->protect
[i
] ? " (RO)" : " ");
196 /*-----------------------------------------------------------------------
200 /*-----------------------------------------------------------------------
204 * The following code cannot be run from FLASH!
207 static ulong
flash_get_size (FPWV
* addr
, flash_info_t
* info
)
211 addr
[0] = (FPW
) 0x00900090;
215 debug ("Manuf. ID @ 0x%08lx: 0x%08lx\n", (ulong
)addr
, value
);
218 case (FPW
) INTEL_MANUFACT
:
219 info
->flash_id
= FLASH_MAN_INTEL
;
222 info
->flash_id
= FLASH_UNKNOWN
;
223 info
->sector_count
= 0;
225 addr
[0] = (FPW
) 0x00FF00FF; /* restore read mode */
226 return (0); /* no or unknown flash */
229 #ifdef FLASH_PORT_WIDTH8
230 value
= addr
[2]; /* device ID */
232 value
= addr
[1]; /* device ID */
235 debug ("Device ID @ 0x%08lx: 0x%08lx\n", (ulong
)(&addr
[1]), value
);
238 case (FPW
) INTEL_ID_28F320J3A
:
239 info
->flash_id
+= FLASH_28F320J3A
;
240 info
->sector_count
= 32;
241 info
->size
= 0x00400000;
244 case (FPW
) INTEL_ID_28F640J3A
:
245 info
->flash_id
+= FLASH_28F640J3A
;
246 info
->sector_count
= 64;
247 info
->size
= 0x00800000;
250 case (FPW
) INTEL_ID_28F128J3A
:
251 info
->flash_id
+= FLASH_28F128J3A
;
252 info
->sector_count
= 128;
253 info
->size
= 0x01000000;
254 break; /* => 16 MB */
257 info
->flash_id
= FLASH_UNKNOWN
;
261 if (info
->sector_count
> CONFIG_SYS_MAX_FLASH_SECT
) {
262 printf ("** ERROR: sector count %d > max (%d) **\n",
263 info
->sector_count
, CONFIG_SYS_MAX_FLASH_SECT
);
264 info
->sector_count
= CONFIG_SYS_MAX_FLASH_SECT
;
267 addr
[0] = (FPW
) 0x00FF00FF; /* restore read mode */
273 /*-----------------------------------------------------------------------
276 int flash_erase (flash_info_t
* info
, int s_first
, int s_last
)
278 int flag
, prot
, sect
;
279 ulong type
, start
, now
, last
;
282 if ((s_first
< 0) || (s_first
> s_last
)) {
283 if (info
->flash_id
== FLASH_UNKNOWN
) {
284 printf ("- missing\n");
286 printf ("- no sectors to erase\n");
291 type
= (info
->flash_id
& FLASH_VENDMASK
);
292 if ((type
!= FLASH_MAN_INTEL
)) {
293 printf ("Can't erase unknown flash type %08lx - aborted\n",
299 for (sect
= s_first
; sect
<= s_last
; ++sect
) {
300 if (info
->protect
[sect
]) {
306 printf ("- Warning: %d protected sectors will not be erased!\n",
312 start
= get_timer (0);
314 /* Start erase on unprotected sectors */
315 for (sect
= s_first
; sect
<= s_last
; sect
++) {
316 if (info
->protect
[sect
] == 0) { /* not protected */
317 FPWV
*addr
= (FPWV
*) (info
->start
[sect
]);
320 /* Disable interrupts which might cause a timeout here */
321 flag
= disable_interrupts ();
323 *addr
= (FPW
) 0x00500050; /* clear status register */
324 *addr
= (FPW
) 0x00200020; /* erase setup */
325 *addr
= (FPW
) 0x00D000D0; /* erase confirm */
327 /* re-enable interrupts if necessary */
329 enable_interrupts ();
331 /* wait at least 80us - let's wait 1 ms */
334 while (((status
= *addr
) & (FPW
) 0x00800080) != (FPW
) 0x00800080) {
335 if ((now
= get_timer (start
)) > CONFIG_SYS_FLASH_ERASE_TOUT
) {
336 printf ("Timeout\n");
337 *addr
= (FPW
) 0x00B000B0; /* suspend erase */
338 *addr
= (FPW
) 0x00FF00FF; /* reset to read mode */
343 /* show that we're waiting */
344 if ((now
- last
) > 1000) { /* every second */
350 *addr
= (FPW
) 0x00FF00FF; /* reset to read mode */
357 /*-----------------------------------------------------------------------
358 * Copy memory to flash, returns:
361 * 2 - Flash not erased
362 * 4 - Flash not identified
365 int write_buff (flash_info_t
* info
, uchar
* src
, ulong addr
, ulong cnt
)
370 int i
, l
, rc
, port_width
;
372 if (info
->flash_id
== FLASH_UNKNOWN
) {
375 /* get lower word aligned address */
376 #ifdef FLASH_PORT_WIDTH16
379 #elif defined(FLASH_PORT_WIDTH32)
388 * handle unaligned start bytes
390 if ((l
= addr
- wp
) != 0) {
392 for (i
= 0, cp
= wp
; i
< l
; ++i
, ++cp
) {
393 data
= (data
<< 8) | (*(uchar
*) cp
);
395 for (; i
< port_width
&& cnt
> 0; ++i
) {
396 data
= (data
<< 8) | *src
++;
400 for (; cnt
== 0 && i
< port_width
; ++i
, ++cp
) {
401 data
= (data
<< 8) | (*(uchar
*) cp
);
404 if ((rc
= write_data (info
, wp
, data
)) != 0) {
411 * handle word aligned part
413 while (cnt
>= port_width
) {
415 for (i
= 0; i
< port_width
; ++i
) {
416 data
= (data
<< 8) | *src
++;
418 if ((rc
= write_data (info
, wp
, data
)) != 0) {
430 * handle unaligned tail bytes
433 for (i
= 0, cp
= wp
; i
< port_width
&& cnt
> 0; ++i
, ++cp
) {
434 data
= (data
<< 8) | *src
++;
437 for (; i
< port_width
; ++i
, ++cp
) {
438 data
= (data
<< 8) | (*(uchar
*) cp
);
441 return (write_data (info
, wp
, data
));
444 /*-----------------------------------------------------------------------
445 * Write a word or halfword to Flash, returns:
448 * 2 - Flash not erased
450 static int write_data (flash_info_t
* info
, ulong dest
, FPW data
)
452 FPWV
*addr
= (FPWV
*) dest
;
457 /* Check if Flash is (sufficiently) erased */
458 if ((*addr
& data
) != data
) {
459 printf ("not erased at %08lx (%x)\n", (ulong
) addr
, *addr
);
462 /* Disable interrupts which might cause a timeout here */
463 flag
= disable_interrupts ();
465 *addr
= (FPW
) 0x00400040; /* write setup */
468 /* re-enable interrupts if necessary */
470 enable_interrupts ();
472 start
= get_timer (0);
474 while (((status
= *addr
) & (FPW
) 0x00800080) != (FPW
) 0x00800080) {
475 if (get_timer (start
) > CONFIG_SYS_FLASH_WRITE_TOUT
) {
476 *addr
= (FPW
) 0x00FF00FF; /* restore read mode */
481 *addr
= (FPW
) 0x00FF00FF; /* restore read mode */