2 * (C) Copyright 2001, 2002
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * Flash Routines for AMD devices on the TQM8260 board
7 *--------------------------------------------------------------------
8 * See file CREDITS for list of people who contributed to this
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
30 #define V_ULONG(a) (*(volatile unsigned long *)( a ))
31 #define V_BYTE(a) (*(volatile unsigned char *)( a ))
34 flash_info_t flash_info
[CONFIG_SYS_MAX_FLASH_BANKS
];
37 /*-----------------------------------------------------------------------
39 void flash_reset (void)
41 if (flash_info
[0].flash_id
!= FLASH_UNKNOWN
) {
42 V_ULONG (flash_info
[0].start
[0]) = 0x00F000F0;
43 V_ULONG (flash_info
[0].start
[0] + 4) = 0x00F000F0;
47 /*-----------------------------------------------------------------------
49 ulong
flash_get_size (ulong baseaddr
, flash_info_t
* info
)
52 unsigned long flashtest_h
, flashtest_l
;
54 /* Write auto select command sequence and test FLASH answer */
55 V_ULONG (baseaddr
+ ((ulong
) 0x0555 << 3)) = 0x00AA00AA;
56 V_ULONG (baseaddr
+ ((ulong
) 0x02AA << 3)) = 0x00550055;
57 V_ULONG (baseaddr
+ ((ulong
) 0x0555 << 3)) = 0x00900090;
58 V_ULONG (baseaddr
+ 4 + ((ulong
) 0x0555 << 3)) = 0x00AA00AA;
59 V_ULONG (baseaddr
+ 4 + ((ulong
) 0x02AA << 3)) = 0x00550055;
60 V_ULONG (baseaddr
+ 4 + ((ulong
) 0x0555 << 3)) = 0x00900090;
62 flashtest_h
= V_ULONG (baseaddr
); /* manufacturer ID */
63 flashtest_l
= V_ULONG (baseaddr
+ 4);
65 switch ((int) flashtest_h
) {
67 info
->flash_id
= FLASH_MAN_AMD
;
70 info
->flash_id
= FLASH_MAN_FUJ
;
73 info
->flash_id
= FLASH_UNKNOWN
;
74 info
->sector_count
= 0;
76 return (0); /* no or unknown flash */
79 flashtest_h
= V_ULONG (baseaddr
+ 8); /* device ID */
80 flashtest_l
= V_ULONG (baseaddr
+ 12);
81 if (flashtest_h
!= flashtest_l
) {
82 info
->flash_id
= FLASH_UNKNOWN
;
84 switch (flashtest_h
) {
86 info
->flash_id
+= FLASH_AM800T
;
87 info
->sector_count
= 19;
88 info
->size
= 0x00400000;
89 break; /* 4 * 1 MB = 4 MB */
91 info
->flash_id
+= FLASH_AM800B
;
92 info
->sector_count
= 19;
93 info
->size
= 0x00400000;
94 break; /* 4 * 1 MB = 4 MB */
96 info
->flash_id
+= FLASH_AM160T
;
97 info
->sector_count
= 35;
98 info
->size
= 0x00800000;
99 break; /* 4 * 2 MB = 8 MB */
101 info
->flash_id
+= FLASH_AM160B
;
102 info
->sector_count
= 35;
103 info
->size
= 0x00800000;
104 break; /* 4 * 2 MB = 8 MB */
106 info
->flash_id
+= FLASH_AMDL322T
;
107 info
->sector_count
= 71;
108 info
->size
= 0x01000000;
109 break; /* 4 * 4 MB = 16 MB */
111 info
->flash_id
+= FLASH_AMDL322B
;
112 info
->sector_count
= 71;
113 info
->size
= 0x01000000;
114 break; /* 4 * 4 MB = 16 MB */
116 info
->flash_id
+= FLASH_AMDL323T
;
117 info
->sector_count
= 71;
118 info
->size
= 0x01000000;
119 break; /* 4 * 4 MB = 16 MB */
121 info
->flash_id
+= FLASH_AMDL323B
;
122 info
->sector_count
= 71;
123 info
->size
= 0x01000000;
124 break; /* 4 * 4 MB = 16 MB */
126 info
->flash_id
+= FLASH_AM640U
;
127 info
->sector_count
= 128;
128 info
->size
= 0x02000000;
129 break; /* 4 * 8 MB = 32 MB */
131 info
->flash_id
= FLASH_UNKNOWN
;
132 return (0); /* no or unknown flash */
136 if (flashtest_h
== AMD_ID_LV640U
) {
138 /* set up sector start adress table (uniform sector type) */
139 for (i
= 0; i
< info
->sector_count
; i
++)
140 info
->start
[i
] = baseaddr
+ (i
* 0x00040000);
142 } else if (info
->flash_id
& FLASH_BTYPE
) {
144 /* set up sector start adress table (bottom sector type) */
145 info
->start
[0] = baseaddr
+ 0x00000000;
146 info
->start
[1] = baseaddr
+ 0x00010000;
147 info
->start
[2] = baseaddr
+ 0x00018000;
148 info
->start
[3] = baseaddr
+ 0x00020000;
149 for (i
= 4; i
< info
->sector_count
; i
++) {
150 info
->start
[i
] = baseaddr
+ (i
* 0x00040000) - 0x000C0000;
155 /* set up sector start adress table (top sector type) */
156 i
= info
->sector_count
- 1;
157 info
->start
[i
--] = baseaddr
+ info
->size
- 0x00010000;
158 info
->start
[i
--] = baseaddr
+ info
->size
- 0x00018000;
159 info
->start
[i
--] = baseaddr
+ info
->size
- 0x00020000;
160 for (; i
>= 0; i
--) {
161 info
->start
[i
] = baseaddr
+ i
* 0x00040000;
165 /* check for protected sectors */
166 for (i
= 0; i
< info
->sector_count
; i
++) {
167 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
168 if ((V_ULONG (info
->start
[i
] + 16) & 0x00010001) ||
169 (V_ULONG (info
->start
[i
] + 20) & 0x00010001)) {
170 info
->protect
[i
] = 1; /* D0 = 1 if protected */
172 info
->protect
[i
] = 0;
180 /*-----------------------------------------------------------------------
182 unsigned long flash_init (void)
184 unsigned long size_b0
= 0;
187 /* Init: no FLASHes known */
188 for (i
= 0; i
< CONFIG_SYS_MAX_FLASH_BANKS
; ++i
) {
189 flash_info
[i
].flash_id
= FLASH_UNKNOWN
;
192 /* Static FLASH Bank configuration here (only one bank) */
194 size_b0
= flash_get_size (CONFIG_SYS_FLASH0_BASE
, &flash_info
[0]);
195 if (flash_info
[0].flash_id
== FLASH_UNKNOWN
|| size_b0
== 0) {
196 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
197 size_b0
, size_b0
>> 20);
201 * protect monitor and environment sectors
204 #if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH0_BASE
205 flash_protect (FLAG_PROTECT_SET
,
206 CONFIG_SYS_MONITOR_BASE
,
207 CONFIG_SYS_MONITOR_BASE
+ monitor_flash_len
- 1, &flash_info
[0]);
210 #if defined(CONFIG_ENV_IS_IN_FLASH) && defined(CONFIG_ENV_ADDR)
211 # ifndef CONFIG_ENV_SIZE
212 # define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
214 flash_protect (FLAG_PROTECT_SET
,
216 CONFIG_ENV_ADDR
+ CONFIG_ENV_SIZE
- 1, &flash_info
[0]);
222 /*-----------------------------------------------------------------------
224 void flash_print_info (flash_info_t
* info
)
228 if (info
->flash_id
== FLASH_UNKNOWN
) {
229 printf ("missing or unknown FLASH type\n");
233 switch (info
->flash_id
& FLASH_VENDMASK
) {
241 printf ("Unknown Vendor ");
245 switch (info
->flash_id
& FLASH_TYPEMASK
) {
247 printf ("29LV800T (8 M, top sector)\n");
250 printf ("29LV800T (8 M, bottom sector)\n");
253 printf ("29LV160T (16 M, top sector)\n");
256 printf ("29LV160B (16 M, bottom sector)\n");
259 printf ("29DL322T (32 M, top sector)\n");
262 printf ("29DL322B (32 M, bottom sector)\n");
265 printf ("29DL323T (32 M, top sector)\n");
268 printf ("29DL323B (32 M, bottom sector)\n");
271 printf ("29LV640D (64 M, uniform sector)\n");
274 printf ("Unknown Chip Type\n");
278 printf (" Size: %ld MB in %d Sectors\n",
279 info
->size
>> 20, info
->sector_count
);
281 printf (" Sector Start Addresses:");
282 for (i
= 0; i
< info
->sector_count
; ++i
) {
287 info
->protect
[i
] ? " (RO)" : " "
294 /*-----------------------------------------------------------------------
296 int flash_erase (flash_info_t
* info
, int s_first
, int s_last
)
298 int flag
, prot
, sect
, l_sect
;
299 ulong start
, now
, last
;
301 if ((s_first
< 0) || (s_first
> s_last
)) {
302 if (info
->flash_id
== FLASH_UNKNOWN
) {
303 printf ("- missing\n");
305 printf ("- no sectors to erase\n");
311 for (sect
= s_first
; sect
<= s_last
; sect
++) {
312 if (info
->protect
[sect
])
317 printf ("- Warning: %d protected sectors will not be erased!\n",
325 /* Disable interrupts which might cause a timeout here */
326 flag
= disable_interrupts ();
328 V_ULONG (info
->start
[0] + (0x0555 << 3)) = 0x00AA00AA;
329 V_ULONG (info
->start
[0] + (0x02AA << 3)) = 0x00550055;
330 V_ULONG (info
->start
[0] + (0x0555 << 3)) = 0x00800080;
331 V_ULONG (info
->start
[0] + (0x0555 << 3)) = 0x00AA00AA;
332 V_ULONG (info
->start
[0] + (0x02AA << 3)) = 0x00550055;
333 V_ULONG (info
->start
[0] + 4 + (0x0555 << 3)) = 0x00AA00AA;
334 V_ULONG (info
->start
[0] + 4 + (0x02AA << 3)) = 0x00550055;
335 V_ULONG (info
->start
[0] + 4 + (0x0555 << 3)) = 0x00800080;
336 V_ULONG (info
->start
[0] + 4 + (0x0555 << 3)) = 0x00AA00AA;
337 V_ULONG (info
->start
[0] + 4 + (0x02AA << 3)) = 0x00550055;
340 /* Start erase on unprotected sectors */
341 for (sect
= s_first
; sect
<= s_last
; sect
++) {
342 if (info
->protect
[sect
] == 0) { /* not protected */
343 V_ULONG (info
->start
[sect
]) = 0x00300030;
344 V_ULONG (info
->start
[sect
] + 4) = 0x00300030;
349 /* re-enable interrupts if necessary */
351 enable_interrupts ();
353 /* wait at least 80us - let's wait 1 ms */
357 * We wait for the last triggered sector
362 start
= get_timer (0);
364 while ((V_ULONG (info
->start
[l_sect
]) & 0x00800080) != 0x00800080 ||
365 (V_ULONG (info
->start
[l_sect
] + 4) & 0x00800080) != 0x00800080)
367 if ((now
= get_timer (start
)) > CONFIG_SYS_FLASH_ERASE_TOUT
) {
368 printf ("Timeout\n");
371 /* show that we're waiting */
372 if ((now
- last
) > 1000) { /* every second */
379 /* reset to read mode */
386 static int write_dword (flash_info_t
*, ulong
, unsigned char *);
388 /*-----------------------------------------------------------------------
389 * Copy memory to flash, returns:
392 * 2 - Flash not erased
395 int write_buff (flash_info_t
* info
, uchar
* src
, ulong addr
, ulong cnt
)
398 static unsigned char bb
[8];
399 int i
, l
, rc
, cc
= cnt
;
401 dp
= (addr
& ~7); /* get lower dword aligned address */
404 * handle unaligned start bytes
406 if ((l
= addr
- dp
) != 0) {
407 for (i
= 0; i
< 8; i
++)
408 bb
[i
] = (i
< l
|| (i
- l
) >= cc
) ? V_BYTE (dp
+ i
) : *src
++;
409 if ((rc
= write_dword (info
, dp
, bb
)) != 0) {
417 * handle word aligned part
420 if ((rc
= write_dword (info
, dp
, src
)) != 0) {
433 * handle unaligned tail bytes
435 for (i
= 0; i
< 8; i
++) {
436 bb
[i
] = (i
< cc
) ? *src
++ : V_BYTE (dp
+ i
);
438 return (write_dword (info
, dp
, bb
));
441 /*-----------------------------------------------------------------------
442 * Write a dword to Flash, returns:
445 * 2 - Flash not erased
447 static int write_dword (flash_info_t
* info
, ulong dest
, unsigned char *pdata
)
452 for (ch
= 0, i
= 0; i
< 4; i
++)
453 ch
= (ch
<< 8) + *pdata
++; /* high word */
454 for (cl
= 0, i
= 0; i
< 4; i
++)
455 cl
= (cl
<< 8) + *pdata
++; /* low word */
457 /* Check if Flash is (sufficiently) erased */
458 if ((*((vu_long
*) dest
) & ch
) != ch
459 || (*((vu_long
*) (dest
+ 4)) & cl
) != cl
) {
463 /* Disable interrupts which might cause a timeout here */
464 flag
= disable_interrupts ();
466 V_ULONG (info
->start
[0] + (0x0555 << 3)) = 0x00AA00AA;
467 V_ULONG (info
->start
[0] + (0x02AA << 3)) = 0x00550055;
468 V_ULONG (info
->start
[0] + (0x0555 << 3)) = 0x00A000A0;
470 V_ULONG (info
->start
[0] + 4 + (0x0555 << 3)) = 0x00AA00AA;
471 V_ULONG (info
->start
[0] + 4 + (0x02AA << 3)) = 0x00550055;
472 V_ULONG (info
->start
[0] + 4 + (0x0555 << 3)) = 0x00A000A0;
473 V_ULONG (dest
+ 4) = cl
;
475 /* re-enable interrupts if necessary */
477 enable_interrupts ();
479 /* data polling for D7 */
480 start
= get_timer (0);
481 while (((V_ULONG (dest
) & 0x00800080) != (ch
& 0x00800080)) ||
482 ((V_ULONG (dest
+ 4) & 0x00800080) != (cl
& 0x00800080))) {
483 if (get_timer (start
) > CONFIG_SYS_FLASH_WRITE_TOUT
) {