2 * (C) Copyright 2003, Dan Malek, Embedded Edge, LLC. <dan@embeddededge.com>
4 * Updated to support the Silicon Tx GP3 8560. We should only find
5 * two Intel 28F640 parts in 16-bit mode (i.e. 32-bit wide flash),
6 * but I left other code here in case people order custom boards.
8 * (C) Copyright 2003 Motorola Inc.
9 * Xianghua Xiao,(X.Xiao@motorola.com)
11 * (C) Copyright 2000, 2001
12 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
14 * (C) Copyright 2001, Stuart Hughes, Lineo Inc, stuarth@lineo.com
15 * Add support the Sharp chips on the mpc8260ads.
16 * I started with board/ip860/flash.c and made changes I found in
17 * the MTD project by David Schleef.
19 * SPDX-License-Identifier: GPL-2.0+
24 #if !defined(CONFIG_SYS_NO_FLASH)
26 flash_info_t flash_info
[CONFIG_SYS_MAX_FLASH_BANKS
]; /* info for FLASH chips */
28 #if defined(CONFIG_ENV_IS_IN_FLASH)
29 # ifndef CONFIG_ENV_ADDR
30 # define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET)
32 # ifndef CONFIG_ENV_SIZE
33 # define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
35 # ifndef CONFIG_ENV_SECT_SIZE
36 # define CONFIG_ENV_SECT_SIZE CONFIG_ENV_SIZE
42 /*-----------------------------------------------------------------------
45 static ulong
flash_get_size (vu_long
*addr
, flash_info_t
*info
);
46 static int write_word (flash_info_t
*info
, ulong dest
, ulong data
);
47 static int clear_block_lock_bit(vu_long
* addr
);
48 /*-----------------------------------------------------------------------
51 unsigned long flash_init (void)
56 /* Init: enable write,
57 * or we cannot even write flash commands
59 for (i
=0; i
<CONFIG_SYS_MAX_FLASH_BANKS
; ++i
) {
60 flash_info
[i
].flash_id
= FLASH_UNKNOWN
;
62 /* set the default sector offset */
65 /* Static FLASH Bank configuration here - FIXME XXX */
67 size
= flash_get_size((vu_long
*)CONFIG_SYS_FLASH_BASE
, &flash_info
[0]);
69 if (flash_info
[0].flash_id
== FLASH_UNKNOWN
) {
70 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
74 /* Re-do sizing to get full correct info */
75 size
= flash_get_size((vu_long
*)CONFIG_SYS_FLASH_BASE
, &flash_info
[0]);
77 flash_info
[0].size
= size
;
79 #if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
80 /* monitor protection ON by default */
81 flash_protect(FLAG_PROTECT_SET
,
82 CONFIG_SYS_MONITOR_BASE
,
83 CONFIG_SYS_MONITOR_BASE
+monitor_flash_len
-1,
86 #ifdef CONFIG_ENV_IS_IN_FLASH
87 /* ENV protection ON by default */
88 flash_protect(FLAG_PROTECT_SET
,
90 CONFIG_ENV_ADDR
+CONFIG_ENV_SECT_SIZE
-1,
97 /*-----------------------------------------------------------------------
99 void flash_print_info (flash_info_t
*info
)
103 if (info
->flash_id
== FLASH_UNKNOWN
) {
104 printf ("missing or unknown FLASH type\n");
108 switch (info
->flash_id
& FLASH_VENDMASK
) {
109 case FLASH_MAN_INTEL
: printf ("Intel "); break;
110 case FLASH_MAN_SHARP
: printf ("Sharp "); break;
111 default: printf ("Unknown Vendor "); break;
114 switch (info
->flash_id
& FLASH_TYPEMASK
) {
115 case FLASH_28F640C3T
: printf ("28F640C3T (64 Mbit x 2, 128 x 128k)\n");
117 default: printf ("Unknown Chip Type\n");
121 printf (" Size: %ld MB in %d Sectors\n",
122 info
->size
>> 20, info
->sector_count
);
124 printf (" Sector Start Addresses:");
125 for (i
=0; i
<info
->sector_count
; ++i
) {
130 info
->protect
[i
] ? " (RO)" : " "
137 * The following code cannot be run from FLASH!
140 static ulong
flash_get_size (vu_long
*addr
, flash_info_t
*info
)
144 ulong base
= (ulong
)addr
;
148 printf("Check flash at 0x%08x\n",(uint
)addr
);
150 /* Write "Intelligent Identifier" command: read Manufacturer ID */
155 value
= addr
[0] & 0x00FF00FF;
158 printf("manufacturer=0x%x\n",(uint
)value
);
161 case MT_MANUFACT
: /* SHARP, MT or => Intel */
163 info
->flash_id
= FLASH_MAN_INTEL
;
166 printf("unknown manufacturer: %x\n", (unsigned int)value
);
167 info
->flash_id
= FLASH_UNKNOWN
;
168 info
->sector_count
= 0;
170 return (0); /* no or unknown flash */
173 value
= addr
[1]; /* device ID */
176 printf("deviceID=0x%x\n",(uint
)value
);
180 case (INTEL_ID_28F640C3T
):
181 info
->flash_id
+= FLASH_28F640C3T
;
182 info
->sector_count
= 135;
183 info
->size
= 0x01000000;
184 sector_offset
= 0x20000;
185 break; /* => 2x8 MB */
188 info
->flash_id
= FLASH_UNKNOWN
;
189 return (0); /* => no or unknown flash */
193 /* set up sector start address table
194 * The first 127 blocks are large, the last 8 are small.
196 for (i
= 0; i
< 127; i
++) {
197 info
->start
[i
] = base
;
198 base
+= sector_offset
;
199 /* Sectors are locked upon reset */
200 info
->protect
[i
] = 0;
202 for (i
= 127; i
< 135; i
++) {
203 info
->start
[i
] = base
;
205 /* Sectors are locked upon reset */
206 info
->protect
[i
] = 0;
211 * Prevent writes to uninitialized FLASH.
213 if (info
->flash_id
!= FLASH_UNKNOWN
) {
214 addr
= (vu_long
*)info
->start
[0];
215 *addr
= 0xFFFFFF; /* reset bank to read array mode */
223 /*-----------------------------------------------------------------------
226 int flash_erase (flash_info_t
*info
, int s_first
, int s_last
)
228 int flag
, prot
, sect
;
229 ulong start
, now
, last
;
231 if ((s_first
< 0) || (s_first
> s_last
)) {
232 if (info
->flash_id
== FLASH_UNKNOWN
) {
233 printf ("- missing\n");
235 printf ("- no sectors to erase\n");
240 if ( ((info
->flash_id
& FLASH_VENDMASK
) != FLASH_MAN_INTEL
)
241 && ((info
->flash_id
& FLASH_VENDMASK
) != FLASH_MAN_SHARP
) ) {
242 printf ("Can't erase unknown flash type %08lx - aborted\n",
248 for (sect
=s_first
; sect
<=s_last
; ++sect
) {
249 if (info
->protect
[sect
]) {
255 printf ("- Warning: %d protected sectors will not be erased!\n",
262 printf("\nFlash Erase:\n");
264 /* Make Sure Block Lock Bit is not set. */
265 if(clear_block_lock_bit((vu_long
*)(info
->start
[s_first
]))){
269 /* Start erase on unprotected sectors */
271 printf("Begin to erase now,s_first=0x%x s_last=0x%x...\n",s_first
,s_last
);
273 for (sect
= s_first
; sect
<=s_last
; sect
++) {
274 if (info
->protect
[sect
] == 0) { /* not protected */
275 vu_long
*addr
= (vu_long
*)(info
->start
[sect
]);
278 last
= start
= get_timer (0);
280 /* Disable interrupts which might cause a timeout here */
281 flag
= disable_interrupts();
286 /* Clear Status Register */
289 /* Single Block Erase Command */
296 if((info
->flash_id
& FLASH_TYPEMASK
) != FLASH_LH28F016SCT
) {
297 /* Resume Command, as per errata update */
302 /* re-enable interrupts if necessary */
306 /* wait at least 80us - let's wait 1 ms */
308 while ((*addr
& 0x00800080) != 0x00800080) {
309 if(*addr
& 0x00200020){
310 printf("Error in Block Erase - Lock Bit may be set!\n");
311 printf("Status Register = 0x%X\n", (uint
)*addr
);
312 *addr
= 0xFFFFFFFF; /* reset bank */
316 if ((now
=get_timer(start
)) > CONFIG_SYS_FLASH_ERASE_TOUT
) {
317 printf ("Timeout\n");
318 *addr
= 0xFFFFFFFF; /* reset bank */
322 /* show that we're waiting */
323 if ((now
- last
) > 1000) { /* every second */
329 /* reset to read mode */
335 printf ("flash erase done\n");
339 /*-----------------------------------------------------------------------
340 * Copy memory to flash, returns:
343 * 2 - Flash not erased
346 int write_buff (flash_info_t
*info
, uchar
*src
, ulong addr
, ulong cnt
)
351 wp
= (addr
& ~3); /* get lower word aligned address */
354 * handle unaligned start bytes
356 if ((l
= addr
- wp
) != 0) {
358 for (i
=0, cp
=wp
; i
<l
; ++i
, ++cp
) {
359 data
= (data
<< 8) | (*(uchar
*)cp
);
361 for (; i
<4 && cnt
>0; ++i
) {
362 data
= (data
<< 8) | *src
++;
366 for (; cnt
==0 && i
<4; ++i
, ++cp
) {
367 data
= (data
<< 8) | (*(uchar
*)cp
);
370 if ((rc
= write_word(info
, wp
, data
)) != 0) {
377 * handle word aligned part
381 for (i
=0; i
<4; ++i
) {
382 data
= (data
<< 8) | *src
++;
384 if ((rc
= write_word(info
, wp
, data
)) != 0) {
396 * handle unaligned tail bytes
399 for (i
=0, cp
=wp
; i
<4 && cnt
>0; ++i
, ++cp
) {
400 data
= (data
<< 8) | *src
++;
403 for (; i
<4; ++i
, ++cp
) {
404 data
= (data
<< 8) | (*(uchar
*)cp
);
407 return (write_word(info
, wp
, data
));
410 /*-----------------------------------------------------------------------
411 * Write a word to Flash, returns:
414 * 2 - Flash not erased
416 static int write_word (flash_info_t
*info
, ulong dest
, ulong data
)
418 vu_long
*addr
= (vu_long
*)dest
;
422 /* Check if Flash is (sufficiently) erased */
423 if ((*addr
& data
) != data
) {
426 /* Disable interrupts which might cause a timeout here */
427 flag
= disable_interrupts();
436 /* re-enable interrupts if necessary */
440 /* data polling for D7 */
441 start
= get_timer (0);
444 while (((csr
= *addr
) & 0x00800080) != 0x00800080) {
445 if (get_timer(start
) > CONFIG_SYS_FLASH_WRITE_TOUT
) {
450 if (csr
& 0x40404040) {
451 printf ("CSR indicates write error (%08lx) at %08lx\n", csr
, (ulong
)addr
);
455 /* Clear Status Registers Command */
458 /* Reset to read array mode */
465 /*-----------------------------------------------------------------------
466 * Clear Block Lock Bit, returns:
471 static int clear_block_lock_bit(vu_long
* addr
)
478 /* Clear Status Register */
487 start
= get_timer (0);
488 while((*addr
& 0x00800080) != 0x00800080){
489 if ((now
=get_timer(start
)) > CONFIG_SYS_FLASH_ERASE_TOUT
) {
490 printf ("Timeout on clearing Block Lock Bit\n");
491 *addr
= 0xFFFFFFFF; /* reset bank */
499 #endif /* !CONFIG_SYS_NO_FLASH */