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wdenkaffae2b2002-08-17 09:36:01 +00001/*
2 * (C) Copyright 2001, 2002
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * (C) Copyright 2002
6 * Frank Panno <fpanno@delphintech.com>, Delphin Technology AG
7 *
8 * Flash Routines for AMD device AM29DL323DB on the EP8260 board.
9 *
10 * This file is based on board/tqm8260/flash.c.
11 *--------------------------------------------------------------------
Wolfgang Denk1a459662013-07-08 09:37:19 +020012 * SPDX-License-Identifier: GPL-2.0+
wdenkaffae2b2002-08-17 09:36:01 +000013 */
14
15#include <common.h>
16#include <mpc8xx.h>
17
18#define V_ULONG(a) (*(volatile unsigned long *)( a ))
19#define V_BYTE(a) (*(volatile unsigned char *)( a ))
20
21
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020022flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
wdenkaffae2b2002-08-17 09:36:01 +000023
24
25/*-----------------------------------------------------------------------
26 */
27void flash_reset(void)
28{
wdenk9dd611b2005-01-09 17:19:34 +000029 if( flash_info[0].flash_id != FLASH_UNKNOWN ) {
30 V_ULONG( flash_info[0].start[0] ) = 0x00F000F0;
31 V_ULONG( flash_info[0].start[0] + 4 ) = 0x00F000F0;
32 }
wdenkaffae2b2002-08-17 09:36:01 +000033}
34
35/*-----------------------------------------------------------------------
36 */
37ulong flash_get_size( ulong baseaddr, flash_info_t *info )
38{
wdenk9dd611b2005-01-09 17:19:34 +000039 short i;
40 unsigned long flashtest_h, flashtest_l;
wdenkaffae2b2002-08-17 09:36:01 +000041
wdenk9dd611b2005-01-09 17:19:34 +000042 /* Write auto select command sequence and test FLASH answer */
43 V_ULONG(baseaddr + ((ulong)0x0555 << 3)) = 0x00AA00AA;
44 V_ULONG(baseaddr + ((ulong)0x02AA << 3)) = 0x00550055;
45 V_ULONG(baseaddr + ((ulong)0x0555 << 3)) = 0x00900090;
46 V_ULONG(baseaddr + 4 + ((ulong)0x0555 << 3)) = 0x00AA00AA;
47 V_ULONG(baseaddr + 4 + ((ulong)0x02AA << 3)) = 0x00550055;
48 V_ULONG(baseaddr + 4 + ((ulong)0x0555 << 3)) = 0x00900090;
wdenkaffae2b2002-08-17 09:36:01 +000049
wdenk9dd611b2005-01-09 17:19:34 +000050 flashtest_h = V_ULONG(baseaddr); /* manufacturer ID */
51 flashtest_l = V_ULONG(baseaddr + 4);
wdenkaffae2b2002-08-17 09:36:01 +000052
wdenk9dd611b2005-01-09 17:19:34 +000053 if ((int)flashtest_h == AMD_MANUFACT) {
54 info->flash_id = FLASH_MAN_AMD;
55 } else {
56 info->flash_id = FLASH_UNKNOWN;
57 info->sector_count = 0;
58 info->size = 0;
Wolfgang Denk53677ef2008-05-20 16:00:29 +020059 return (0); /* no or unknown flash */
wdenk9dd611b2005-01-09 17:19:34 +000060 }
wdenkaffae2b2002-08-17 09:36:01 +000061
wdenk9dd611b2005-01-09 17:19:34 +000062 flashtest_h = V_ULONG(baseaddr + 8); /* device ID */
63 flashtest_l = V_ULONG(baseaddr + 12);
64 if (flashtest_h != flashtest_l) {
65 info->flash_id = FLASH_UNKNOWN;
66 return(0);
67 }
wdenkaffae2b2002-08-17 09:36:01 +000068
wdenk9dd611b2005-01-09 17:19:34 +000069 switch((int)flashtest_h) {
70 case AMD_ID_DL323B:
71 info->flash_id += FLASH_AMDL323B;
72 info->sector_count = 71;
73 info->size = 0x01000000; /* 4 * 4 MB = 16 MB */
74 break;
75 case AMD_ID_LV640U: /* AMDLV640 and AMDLV641 have same ID */
76 info->flash_id += FLASH_AMLV640U;
77 info->sector_count = 128;
Wolfgang Denk53677ef2008-05-20 16:00:29 +020078 info->size = 0x02000000; /* 4 * 8 MB = 32 MB */
wdenk9dd611b2005-01-09 17:19:34 +000079 break;
80 default:
81 info->flash_id = FLASH_UNKNOWN;
Wolfgang Denk53677ef2008-05-20 16:00:29 +020082 return(0); /* no or unknown flash */
wdenk9dd611b2005-01-09 17:19:34 +000083 }
wdenkaffae2b2002-08-17 09:36:01 +000084
wdenk9dd611b2005-01-09 17:19:34 +000085 if(flashtest_h == AMD_ID_LV640U) {
86 /* set up sector start adress table (uniform sector type) */
87 for (i = 0; i < info->sector_count; i++)
88 info->start[i] = baseaddr + (i * 0x00040000);
89 } else {
90 /* set up sector start adress table (bottom sector type) */
91 for (i = 0; i < 8; i++) {
92 info->start[i] = baseaddr + (i * 0x00008000);
93 }
94 for (i = 8; i < info->sector_count; i++) {
95 info->start[i] = baseaddr + (i * 0x00040000) - 0x001C0000;
96 }
97 }
98 /* check for protected sectors */
99 for (i = 0; i < info->sector_count; i++) {
100 /* read sector protection at sector address, (A7 .. A0) = 0x02 */
101 if ((V_ULONG( info->start[i] + 16 ) & 0x00010001) ||
102 (V_ULONG( info->start[i] + 20 ) & 0x00010001)) {
103 info->protect[i] = 1; /* D0 = 1 if protected */
104 } else {
105 info->protect[i] = 0;
106 }
107 }
wdenkaffae2b2002-08-17 09:36:01 +0000108
wdenk9dd611b2005-01-09 17:19:34 +0000109 flash_reset();
110 return(info->size);
wdenkaffae2b2002-08-17 09:36:01 +0000111}
112
113/*-----------------------------------------------------------------------
114 */
115unsigned long flash_init (void)
116{
wdenk9dd611b2005-01-09 17:19:34 +0000117 unsigned long size_b0 = 0;
118 int i;
wdenkaffae2b2002-08-17 09:36:01 +0000119
wdenk9dd611b2005-01-09 17:19:34 +0000120 /* Init: no FLASHes known */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200121 for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
wdenk9dd611b2005-01-09 17:19:34 +0000122 flash_info[i].flash_id = FLASH_UNKNOWN;
123 }
wdenkaffae2b2002-08-17 09:36:01 +0000124
wdenk9dd611b2005-01-09 17:19:34 +0000125 /* Static FLASH Bank configuration here (only one bank) */
wdenkaffae2b2002-08-17 09:36:01 +0000126
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200127 size_b0 = flash_get_size(CONFIG_SYS_FLASH0_BASE, &flash_info[0]);
wdenk9dd611b2005-01-09 17:19:34 +0000128 if (flash_info[0].flash_id == FLASH_UNKNOWN || size_b0 == 0) {
129 printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
130 size_b0, size_b0>>20);
131 }
wdenkaffae2b2002-08-17 09:36:01 +0000132
wdenk9dd611b2005-01-09 17:19:34 +0000133 /*
134 * protect monitor and environment sectors
135 */
wdenkaffae2b2002-08-17 09:36:01 +0000136
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200137#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH0_BASE
wdenk9dd611b2005-01-09 17:19:34 +0000138 flash_protect(FLAG_PROTECT_SET,
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200139 CONFIG_SYS_MONITOR_BASE,
140 CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1,
wdenk9dd611b2005-01-09 17:19:34 +0000141 &flash_info[0]);
wdenkaffae2b2002-08-17 09:36:01 +0000142#endif
143
Jean-Christophe PLAGNIOL-VILLARD0e8d1582008-09-10 22:48:06 +0200144#if defined(CONFIG_ENV_IS_IN_FLASH) && defined(CONFIG_ENV_ADDR)
145# ifndef CONFIG_ENV_SIZE
146# define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
wdenkaffae2b2002-08-17 09:36:01 +0000147# endif
wdenk9dd611b2005-01-09 17:19:34 +0000148 flash_protect(FLAG_PROTECT_SET,
Jean-Christophe PLAGNIOL-VILLARD0e8d1582008-09-10 22:48:06 +0200149 CONFIG_ENV_ADDR,
150 CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1,
wdenk9dd611b2005-01-09 17:19:34 +0000151 &flash_info[0]);
wdenkaffae2b2002-08-17 09:36:01 +0000152#endif
153
wdenk9dd611b2005-01-09 17:19:34 +0000154 return (size_b0);
wdenkaffae2b2002-08-17 09:36:01 +0000155}
156
157/*-----------------------------------------------------------------------
158 */
159void flash_print_info (flash_info_t *info)
160{
wdenk9dd611b2005-01-09 17:19:34 +0000161 int i;
wdenkaffae2b2002-08-17 09:36:01 +0000162
wdenk9dd611b2005-01-09 17:19:34 +0000163 if (info->flash_id == FLASH_UNKNOWN) {
164 printf ("missing or unknown FLASH type\n");
165 return;
166 }
167
168 switch ((info->flash_id >> 16) & 0xff) {
169 case FLASH_MAN_AMD: printf ("AMD "); break;
170 default: printf ("Unknown Vendor "); break;
171 }
172
173 switch (info->flash_id & FLASH_TYPEMASK) {
174 case FLASH_AMDL323B: printf ("29DL323B (32 M, bottom sector)\n");
175 break;
176 case FLASH_AMLV640U: printf ("29LV640U (64 M, uniform sector)\n");
177 break;
178 default: printf ("Unknown Chip Type\n");
179 break;
180 }
181
182 printf (" Size: %ld MB in %d Sectors\n",
183 info->size >> 20, info->sector_count);
184
185 printf (" Sector Start Addresses:");
186 for (i=0; i<info->sector_count; ++i) {
187 if ((i % 5) == 0)
188 printf ("\n ");
189 printf (" %08lX%s",
190 info->start[i],
191 info->protect[i] ? " (RO)" : " "
192 );
193 }
194 printf ("\n");
wdenkaffae2b2002-08-17 09:36:01 +0000195 return;
wdenkaffae2b2002-08-17 09:36:01 +0000196}
197
198/*-----------------------------------------------------------------------
199 */
200int flash_erase (flash_info_t *info, int s_first, int s_last)
201{
wdenk9dd611b2005-01-09 17:19:34 +0000202 int flag, prot, sect, l_sect;
203 ulong start, now, last;
wdenkaffae2b2002-08-17 09:36:01 +0000204
wdenk9dd611b2005-01-09 17:19:34 +0000205 if ((s_first < 0) || (s_first > s_last)) {
206 if (info->flash_id == FLASH_UNKNOWN) {
207 printf ("- missing\n");
208 } else {
209 printf ("- no sectors to erase\n");
210 }
211 return 1;
212 }
213
214 prot = 0;
215 for (sect = s_first; sect <= s_last; sect++) {
216 if (info->protect[sect])
217 prot++;
218 }
219
220 if (prot) {
221 printf ("- Warning: %d protected sectors will not be erased!\n",
222 prot);
wdenkaffae2b2002-08-17 09:36:01 +0000223 } else {
wdenk9dd611b2005-01-09 17:19:34 +0000224 printf ("\n");
wdenkaffae2b2002-08-17 09:36:01 +0000225 }
wdenkaffae2b2002-08-17 09:36:01 +0000226
wdenk9dd611b2005-01-09 17:19:34 +0000227 l_sect = -1;
wdenkaffae2b2002-08-17 09:36:01 +0000228
wdenk9dd611b2005-01-09 17:19:34 +0000229 /* Disable interrupts which might cause a timeout here */
230 flag = disable_interrupts();
wdenkaffae2b2002-08-17 09:36:01 +0000231
wdenk9dd611b2005-01-09 17:19:34 +0000232 V_ULONG( info->start[0] + (0x0555 << 3) ) = 0x00AA00AA;
233 V_ULONG( info->start[0] + (0x02AA << 3) ) = 0x00550055;
234 V_ULONG( info->start[0] + (0x0555 << 3) ) = 0x00800080;
235 V_ULONG( info->start[0] + (0x0555 << 3) ) = 0x00AA00AA;
236 V_ULONG( info->start[0] + (0x02AA << 3) ) = 0x00550055;
237 V_ULONG( info->start[0] + 4 + (0x0555 << 3) ) = 0x00AA00AA;
238 V_ULONG( info->start[0] + 4 + (0x02AA << 3) ) = 0x00550055;
239 V_ULONG( info->start[0] + 4 + (0x0555 << 3) ) = 0x00800080;
240 V_ULONG( info->start[0] + 4 + (0x0555 << 3) ) = 0x00AA00AA;
241 V_ULONG( info->start[0] + 4 + (0x02AA << 3) ) = 0x00550055;
242 udelay (1000);
wdenkaffae2b2002-08-17 09:36:01 +0000243
wdenk9dd611b2005-01-09 17:19:34 +0000244 /* Start erase on unprotected sectors */
245 for (sect = s_first; sect<=s_last; sect++) {
246 if (info->protect[sect] == 0) { /* not protected */
247 V_ULONG( info->start[sect] ) = 0x00300030;
248 V_ULONG( info->start[sect] + 4 ) = 0x00300030;
249 l_sect = sect;
250 }
wdenkaffae2b2002-08-17 09:36:01 +0000251 }
wdenkaffae2b2002-08-17 09:36:01 +0000252
wdenk9dd611b2005-01-09 17:19:34 +0000253 /* re-enable interrupts if necessary */
254 if (flag)
255 enable_interrupts();
wdenkaffae2b2002-08-17 09:36:01 +0000256
wdenk9dd611b2005-01-09 17:19:34 +0000257 /* wait at least 80us - let's wait 1 ms */
258 udelay (1000);
wdenkaffae2b2002-08-17 09:36:01 +0000259
wdenk9dd611b2005-01-09 17:19:34 +0000260 /*
261 * We wait for the last triggered sector
262 */
263 if (l_sect < 0)
264 goto DONE;
wdenkaffae2b2002-08-17 09:36:01 +0000265
wdenk9dd611b2005-01-09 17:19:34 +0000266 start = get_timer (0);
267 last = start;
268 while ((V_ULONG( info->start[l_sect] ) & 0x00800080) != 0x00800080 ||
269 (V_ULONG( info->start[l_sect] + 4 ) & 0x00800080) != 0x00800080)
270 {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200271 if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
wdenk9dd611b2005-01-09 17:19:34 +0000272 printf ("Timeout\n");
273 return 1;
274 }
275 /* show that we're waiting */
276 if ((now - last) > 1000) { /* every second */
277 serial_putc ('.');
278 last = now;
279 }
wdenkaffae2b2002-08-17 09:36:01 +0000280 }
wdenkaffae2b2002-08-17 09:36:01 +0000281
wdenk9dd611b2005-01-09 17:19:34 +0000282 DONE:
283 /* reset to read mode */
284 flash_reset ();
wdenkaffae2b2002-08-17 09:36:01 +0000285
wdenk9dd611b2005-01-09 17:19:34 +0000286 printf (" done\n");
287 return 0;
wdenkaffae2b2002-08-17 09:36:01 +0000288}
289
290static int write_dword (flash_info_t *, ulong, unsigned char *);
291
292/*-----------------------------------------------------------------------
293 * Copy memory to flash, returns:
294 * 0 - OK
295 * 1 - write timeout
296 * 2 - Flash not erased
297 */
298
299int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
300{
wdenk9dd611b2005-01-09 17:19:34 +0000301 ulong dp;
302 static unsigned char bb[8];
303 int i, l, rc, cc = cnt;
wdenkaffae2b2002-08-17 09:36:01 +0000304
wdenk9dd611b2005-01-09 17:19:34 +0000305 dp = (addr & ~7); /* get lower dword aligned address */
wdenkaffae2b2002-08-17 09:36:01 +0000306
wdenk9dd611b2005-01-09 17:19:34 +0000307 /*
308 * handle unaligned start bytes
309 */
310 if ((l = addr - dp) != 0) {
311 for (i = 0; i < 8; i++)
312 bb[i] = (i < l || (i-l) >= cc) ? V_BYTE(dp+i) : *src++;
313 if ((rc = write_dword(info, dp, bb)) != 0)
314 {
315 return (rc);
316 }
317 dp += 8;
318 cc -= 8 - l;
wdenkaffae2b2002-08-17 09:36:01 +0000319 }
wdenkaffae2b2002-08-17 09:36:01 +0000320
wdenk9dd611b2005-01-09 17:19:34 +0000321 /*
322 * handle word aligned part
323 */
324 while (cc >= 8) {
325 if ((rc = write_dword(info, dp, src)) != 0) {
326 return (rc);
327 }
328 dp += 8;
329 src += 8;
330 cc -= 8;
wdenkaffae2b2002-08-17 09:36:01 +0000331 }
wdenkaffae2b2002-08-17 09:36:01 +0000332
wdenk9dd611b2005-01-09 17:19:34 +0000333 if (cc <= 0) {
334 return (0);
335 }
wdenkaffae2b2002-08-17 09:36:01 +0000336
wdenk9dd611b2005-01-09 17:19:34 +0000337 /*
338 * handle unaligned tail bytes
339 */
340 for (i = 0; i < 8; i++) {
341 bb[i] = (i < cc) ? *src++ : V_BYTE(dp+i);
342 }
343 return (write_dword(info, dp, bb));
wdenkaffae2b2002-08-17 09:36:01 +0000344}
345
346/*-----------------------------------------------------------------------
347 * Write a dword to Flash, returns:
348 * 0 - OK
349 * 1 - write timeout
350 * 2 - Flash not erased
351 */
352static int write_dword (flash_info_t *info, ulong dest, unsigned char * pdata)
353{
wdenk9dd611b2005-01-09 17:19:34 +0000354 ulong start;
355 ulong cl = 0, ch =0;
356 int flag, i;
wdenkaffae2b2002-08-17 09:36:01 +0000357
wdenk9dd611b2005-01-09 17:19:34 +0000358 for (ch=0, i=0; i < 4; i++)
359 ch = (ch << 8) + *pdata++; /* high word */
360 for (cl=0, i=0; i < 4; i++)
361 cl = (cl << 8) + *pdata++; /* low word */
wdenkaffae2b2002-08-17 09:36:01 +0000362
wdenk9dd611b2005-01-09 17:19:34 +0000363 /* Check if Flash is (sufficiently) erased */
364 if ((*((vu_long *)dest) & ch) != ch
365 ||(*((vu_long *)(dest + 4)) & cl) != cl)
366 {
367 return (2);
wdenkaffae2b2002-08-17 09:36:01 +0000368 }
wdenk9dd611b2005-01-09 17:19:34 +0000369
370 /* Disable interrupts which might cause a timeout here */
371 flag = disable_interrupts();
372
373 V_ULONG( info->start[0] + (0x0555 << 3) ) = 0x00AA00AA;
374 V_ULONG( info->start[0] + (0x02AA << 3) ) = 0x00550055;
375 V_ULONG( info->start[0] + (0x0555 << 3) ) = 0x00A000A0;
376 V_ULONG( dest ) = ch;
377 V_ULONG( info->start[0] + 4 + (0x0555 << 3) ) = 0x00AA00AA;
378 V_ULONG( info->start[0] + 4 + (0x02AA << 3) ) = 0x00550055;
379 V_ULONG( info->start[0] + 4 + (0x0555 << 3) ) = 0x00A000A0;
380 V_ULONG( dest + 4 ) = cl;
381
382 /* re-enable interrupts if necessary */
383 if (flag)
384 enable_interrupts();
385
386 /* data polling for D7 */
387 start = get_timer (0);
388 while (((V_ULONG( dest ) & 0x00800080) != (ch & 0x00800080)) ||
389 ((V_ULONG( dest + 4 ) & 0x00800080) != (cl & 0x00800080))) {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200390 if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
wdenk9dd611b2005-01-09 17:19:34 +0000391 return (1);
392 }
393 }
394 return (0);
wdenkaffae2b2002-08-17 09:36:01 +0000395}