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git.ipfire.org Git - people/ms/u-boot.git/blob - board/ppmc7xx/flash.c
5 * Flash programming routines for the Wind River PPMC 74xx/7xx
6 * based on flash.c from the TQM8260 board.
8 * By Richard Danter (richard.danter@windriver.com)
9 * Copyright (C) 2005 Wind River Systems
13 #include <asm/processor.h>
16 #define DWORD unsigned long long
18 /* Local function prototypes */
19 static int write_dword (flash_info_t
* info
, ulong dest
, unsigned char *pdata
);
20 static void write_via_fpu (volatile DWORD
* addr
, DWORD
* data
);
22 flash_info_t flash_info
[CFG_MAX_FLASH_BANKS
];
24 /*-----------------------------------------------------------------------
26 void flash_reset (void)
29 DWORD cmd_reset
= 0x00F000F000F000F0LL
;
31 if (flash_info
[0].flash_id
!= FLASH_UNKNOWN
) {
33 set_msr (msr
| MSR_FP
);
35 write_via_fpu ((DWORD
*)flash_info
[0].start
[0], &cmd_reset
);
41 /*-----------------------------------------------------------------------
43 ulong
flash_get_size (ulong baseaddr
, flash_info_t
* info
)
48 DWORD cmd_select
[3] = { 0x00AA00AA00AA00AALL
, 0x0055005500550055LL
,
49 0x0090009000900090LL
};
53 set_msr (msr
| MSR_FP
);
55 /* Write auto-select command sequence */
56 write_via_fpu ((DWORD
*)(baseaddr
+ (0x0555 << 3)), &cmd_select
[0] );
57 write_via_fpu ((DWORD
*)(baseaddr
+ (0x02AA << 3)), &cmd_select
[1] );
58 write_via_fpu ((DWORD
*)(baseaddr
+ (0x0555 << 3)), &cmd_select
[2] );
63 /* Read manufacturer ID */
64 flashtest
= *(volatile DWORD
*)baseaddr
;
65 switch ((int)flashtest
) {
67 info
->flash_id
= FLASH_MAN_AMD
;
70 info
->flash_id
= FLASH_MAN_FUJ
;
73 /* No, faulty or unknown flash */
74 info
->flash_id
= FLASH_UNKNOWN
;
75 info
->sector_count
= 0;
81 flashtest
= *(volatile DWORD
*)(baseaddr
+ 8);
82 switch ((long)flashtest
) {
84 info
->flash_id
+= FLASH_AM800T
;
85 info
->sector_count
= 19;
86 info
->size
= 0x00400000;
89 info
->flash_id
+= FLASH_AM800B
;
90 info
->sector_count
= 19;
91 info
->size
= 0x00400000;
94 info
->flash_id
+= FLASH_AM160T
;
95 info
->sector_count
= 35;
96 info
->size
= 0x00800000;
99 info
->flash_id
+= FLASH_AM160B
;
100 info
->sector_count
= 35;
101 info
->size
= 0x00800000;
104 info
->flash_id
+= FLASH_AMDL322T
;
105 info
->sector_count
= 71;
106 info
->size
= 0x01000000;
109 info
->flash_id
+= FLASH_AMDL322B
;
110 info
->sector_count
= 71;
111 info
->size
= 0x01000000;
114 info
->flash_id
+= FLASH_AMDL323T
;
115 info
->sector_count
= 71;
116 info
->size
= 0x01000000;
119 info
->flash_id
+= FLASH_AMDL323B
;
120 info
->sector_count
= 71;
121 info
->size
= 0x01000000;
124 info
->flash_id
+= FLASH_AM640U
;
125 info
->sector_count
= 128;
126 info
->size
= 0x02000000;
129 /* Unknown flash type */
130 info
->flash_id
= FLASH_UNKNOWN
;
134 if ((long)flashtest
== AMD_ID_LV640U
) {
135 /* set up sector start adress table (uniform sector type) */
136 for (i
= 0; i
< info
->sector_count
; i
++)
137 info
->start
[i
] = baseaddr
+ (i
* 0x00040000);
138 } else if (info
->flash_id
& FLASH_BTYPE
) {
139 /* set up sector start adress table (bottom sector type) */
140 info
->start
[0] = baseaddr
+ 0x00000000;
141 info
->start
[1] = baseaddr
+ 0x00010000;
142 info
->start
[2] = baseaddr
+ 0x00018000;
143 info
->start
[3] = baseaddr
+ 0x00020000;
144 for (i
= 4; i
< info
->sector_count
; i
++) {
145 info
->start
[i
] = baseaddr
+ (i
* 0x00040000) - 0x000C0000;
148 /* set up sector start adress table (top sector type) */
149 i
= info
->sector_count
- 1;
150 info
->start
[i
--] = baseaddr
+ info
->size
- 0x00010000;
151 info
->start
[i
--] = baseaddr
+ info
->size
- 0x00018000;
152 info
->start
[i
--] = baseaddr
+ info
->size
- 0x00020000;
153 for (; i
>= 0; i
--) {
154 info
->start
[i
] = baseaddr
+ i
* 0x00040000;
158 /* check for protected sectors */
159 for (i
= 0; i
< info
->sector_count
; i
++) {
160 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
161 if (*(volatile DWORD
*)(info
->start
[i
] + 16) & 0x0001000100010001LL
) {
162 info
->protect
[i
] = 1; /* D0 = 1 if protected */
164 info
->protect
[i
] = 0;
172 /*-----------------------------------------------------------------------
174 unsigned long flash_init (void)
176 unsigned long size_b0
= 0;
179 /* Init: no FLASHes known */
180 for (i
= 0; i
< CFG_MAX_FLASH_BANKS
; ++i
) {
181 flash_info
[i
].flash_id
= FLASH_UNKNOWN
;
184 /* Static FLASH Bank configuration here (only one bank) */
185 size_b0
= flash_get_size (CFG_FLASH_BASE
, &flash_info
[0]);
186 if (flash_info
[0].flash_id
== FLASH_UNKNOWN
|| size_b0
== 0) {
187 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
188 size_b0
, size_b0
>> 20);
192 * protect monitor and environment sectors
194 #if CFG_MONITOR_BASE >= CFG_FLASH_BASE
195 flash_protect (FLAG_PROTECT_SET
,
197 CFG_MONITOR_BASE
+ monitor_flash_len
- 1, &flash_info
[0]);
200 #if (CFG_ENV_IS_IN_FLASH == 1) && defined(CFG_ENV_ADDR)
201 # ifndef CFG_ENV_SIZE
202 # define CFG_ENV_SIZE CFG_ENV_SECT_SIZE
204 flash_protect (FLAG_PROTECT_SET
,
206 CFG_ENV_ADDR
+ CFG_ENV_SIZE
- 1, &flash_info
[0]);
212 /*-----------------------------------------------------------------------
214 void flash_print_info (flash_info_t
* info
)
218 if (info
->flash_id
== FLASH_UNKNOWN
) {
219 printf ("missing or unknown FLASH type\n");
223 switch (info
->flash_id
& FLASH_VENDMASK
) {
231 printf ("Unknown Vendor ");
235 switch (info
->flash_id
& FLASH_TYPEMASK
) {
237 printf ("29LV800T (8 M, top sector)\n");
240 printf ("29LV800T (8 M, bottom sector)\n");
243 printf ("29LV160T (16 M, top sector)\n");
246 printf ("29LV160B (16 M, bottom sector)\n");
249 printf ("29DL322T (32 M, top sector)\n");
252 printf ("29DL322B (32 M, bottom sector)\n");
255 printf ("29DL323T (32 M, top sector)\n");
258 printf ("29DL323B (32 M, bottom sector)\n");
261 printf ("29LV640D (64 M, uniform sector)\n");
264 printf ("Unknown Chip Type\n");
268 printf (" Size: %ld MB in %d Sectors\n",
269 info
->size
>> 20, info
->sector_count
);
271 printf (" Sector Start Addresses:");
272 for (i
= 0; i
< info
->sector_count
; ++i
) {
277 info
->protect
[i
] ? " (RO)" : " "
284 /*-----------------------------------------------------------------------
286 int flash_erase (flash_info_t
* info
, int s_first
, int s_last
)
288 int flag
, prot
, sect
, l_sect
;
289 ulong start
, now
, last
;
291 DWORD cmd_erase
[6] = { 0x00AA00AA00AA00AALL
, 0x0055005500550055LL
,
292 0x0080008000800080LL
, 0x00AA00AA00AA00AALL
,
293 0x0055005500550055LL
, 0x0030003000300030LL
};
295 if ((s_first
< 0) || (s_first
> s_last
)) {
296 if (info
->flash_id
== FLASH_UNKNOWN
) {
297 printf ("- missing\n");
299 printf ("- no sectors to erase\n");
305 for (sect
= s_first
; sect
<= s_last
; sect
++) {
306 if (info
->protect
[sect
])
311 printf ("- Warning: %d protected sectors will not be erased!\n",
321 set_msr ( msr
| MSR_FP
);
323 /* Disable interrupts which might cause a timeout here */
324 flag
= disable_interrupts ();
326 write_via_fpu ((DWORD
*)(info
->start
[0] + (0x0555 << 3)), &cmd_erase
[0] );
327 write_via_fpu ((DWORD
*)(info
->start
[0] + (0x02AA << 3)), &cmd_erase
[1] );
328 write_via_fpu ((DWORD
*)(info
->start
[0] + (0x0555 << 3)), &cmd_erase
[2] );
329 write_via_fpu ((DWORD
*)(info
->start
[0] + (0x0555 << 3)), &cmd_erase
[3] );
330 write_via_fpu ((DWORD
*)(info
->start
[0] + (0x02AA << 3)), &cmd_erase
[4] );
333 /* Start erase on unprotected sectors */
334 for (sect
= s_first
; sect
<= s_last
; sect
++) {
335 if (info
->protect
[sect
] == 0) { /* not protected */
336 write_via_fpu ((DWORD
*)info
->start
[sect
], &cmd_erase
[5] );
341 /* re-enable interrupts if necessary */
343 enable_interrupts ();
348 /* wait at least 80us - let's wait 1 ms */
352 * We wait for the last triggered sector
357 start
= get_timer (0);
359 while ((*(volatile DWORD
*)info
->start
[l_sect
] & 0x0080008000800080LL
)
360 != 0x0080008000800080LL
)
362 if ((now
= get_timer (start
)) > CFG_FLASH_ERASE_TOUT
) {
363 printf ("Timeout\n");
366 /* show that we're waiting */
367 if ((now
- last
) > 1000) { /* every second */
374 /* reset to read mode */
382 /*-----------------------------------------------------------------------
383 * Copy memory to flash, returns:
386 * 2 - Flash not erased
389 int write_buff (flash_info_t
* info
, uchar
* src
, ulong addr
, ulong cnt
)
392 static unsigned char bb
[8];
393 int i
, l
, rc
, cc
= cnt
;
395 dp
= (addr
& ~7); /* get lower dword aligned address */
398 * handle unaligned start bytes
400 if ((l
= addr
- dp
) != 0) {
401 for (i
= 0; i
< 8; i
++)
402 bb
[i
] = (i
< l
|| (i
- l
) >= cc
) ? *(char*)(dp
+ i
) : *src
++;
403 if ((rc
= write_dword (info
, dp
, bb
)) != 0) {
411 * handle word aligned part
414 if ((rc
= write_dword (info
, dp
, src
)) != 0) {
427 * handle unaligned tail bytes
429 for (i
= 0; i
< 8; i
++) {
430 bb
[i
] = (i
< cc
) ? *src
++ : *(char*)(dp
+ i
);
432 return (write_dword (info
, dp
, bb
));
435 /*-----------------------------------------------------------------------
436 * Write a dword to Flash, returns:
439 * 2 - Flash not erased
441 static int write_dword (flash_info_t
* info
, ulong dest
, unsigned char *pdata
)
447 DWORD cmd_write
[3] = { 0x00AA00AA00AA00AALL
, 0x0055005500550055LL
,
448 0x00A000A000A000A0LL
};
450 for (data
= 0, i
= 0; i
< 8; i
++)
451 data
= (data
<< 8) + *pdata
++;
453 /* Check if Flash is (sufficiently) erased */
454 if ((*(DWORD
*)dest
& data
) != data
) {
460 set_msr( msr
| MSR_FP
);
462 /* Disable interrupts which might cause a timeout here */
463 flag
= disable_interrupts ();
465 write_via_fpu ((DWORD
*)(info
->start
[0] + (0x0555 << 3)), &cmd_write
[0] );
466 write_via_fpu ((DWORD
*)(info
->start
[0] + (0x02AA << 3)), &cmd_write
[1] );
467 write_via_fpu ((DWORD
*)(info
->start
[0] + (0x0555 << 3)), &cmd_write
[2] );
468 write_via_fpu ((DWORD
*)dest
, &data
);
470 /* re-enable interrupts if necessary */
472 enable_interrupts ();
477 /* data polling for D7 */
478 start
= get_timer (0);
479 while (*(volatile DWORD
*)dest
!= data
) {
480 if (get_timer (start
) > CFG_FLASH_WRITE_TOUT
) {
487 /*-----------------------------------------------------------------------
489 static void write_via_fpu (volatile DWORD
* addr
, DWORD
* data
)
491 __asm__
__volatile__ ("lfd 1, 0(%0)"::"r" (data
));
492 __asm__
__volatile__ ("stfd 1, 0(%0)"::"r" (addr
));
493 __asm__
__volatile__ ("eieio");