2 * (C) Copyright 2001, 2002
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
6 * Frank Panno <fpanno@delphintech.com>, Delphin Technology AG
8 * Flash Routines for AMD device AM29DL323DB on the EP8260 board.
10 * This file is based on board/tqm8260/flash.c.
11 *--------------------------------------------------------------------
12 * SPDX-License-Identifier: GPL-2.0+
18 #define V_ULONG(a) (*(volatile unsigned long *)( a ))
19 #define V_BYTE(a) (*(volatile unsigned char *)( a ))
22 flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
25 /*-----------------------------------------------------------------------
27 void flash_reset(void)
29 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;
35 /*-----------------------------------------------------------------------
37 ulong flash_get_size( ulong baseaddr, flash_info_t *info )
40 unsigned long flashtest_h, flashtest_l;
42 /* 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;
50 flashtest_h = V_ULONG(baseaddr); /* manufacturer ID */
51 flashtest_l = V_ULONG(baseaddr + 4);
53 if ((int)flashtest_h == AMD_MANUFACT) {
54 info->flash_id = FLASH_MAN_AMD;
56 info->flash_id = FLASH_UNKNOWN;
57 info->sector_count = 0;
59 return (0); /* no or unknown flash */
62 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;
69 switch((int)flashtest_h) {
71 info->flash_id += FLASH_AMDL323B;
72 info->sector_count = 71;
73 info->size = 0x01000000; /* 4 * 4 MB = 16 MB */
75 case AMD_ID_LV640U: /* AMDLV640 and AMDLV641 have same ID */
76 info->flash_id += FLASH_AMLV640U;
77 info->sector_count = 128;
78 info->size = 0x02000000; /* 4 * 8 MB = 32 MB */
81 info->flash_id = FLASH_UNKNOWN;
82 return(0); /* no or unknown flash */
85 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);
90 /* set up sector start adress table (bottom sector type) */
91 for (i = 0; i < 8; i++) {
92 info->start[i] = baseaddr + (i * 0x00008000);
94 for (i = 8; i < info->sector_count; i++) {
95 info->start[i] = baseaddr + (i * 0x00040000) - 0x001C0000;
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 */
105 info->protect[i] = 0;
113 /*-----------------------------------------------------------------------
115 unsigned long flash_init (void)
117 unsigned long size_b0 = 0;
120 /* Init: no FLASHes known */
121 for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
122 flash_info[i].flash_id = FLASH_UNKNOWN;
125 /* Static FLASH Bank configuration here (only one bank) */
127 size_b0 = flash_get_size(CONFIG_SYS_FLASH0_BASE, &flash_info[0]);
128 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);
134 * protect monitor and environment sectors
137 #if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH0_BASE
138 flash_protect(FLAG_PROTECT_SET,
139 CONFIG_SYS_MONITOR_BASE,
140 CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1,
144 #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
148 flash_protect(FLAG_PROTECT_SET,
150 CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1,
157 /*-----------------------------------------------------------------------
159 void flash_print_info (flash_info_t *info)
163 if (info->flash_id == FLASH_UNKNOWN) {
164 printf ("missing or unknown FLASH type\n");
168 switch ((info->flash_id >> 16) & 0xff) {
169 case FLASH_MAN_AMD: printf ("AMD "); break;
170 default: printf ("Unknown Vendor "); break;
173 switch (info->flash_id & FLASH_TYPEMASK) {
174 case FLASH_AMDL323B: printf ("29DL323B (32 M, bottom sector)\n");
176 case FLASH_AMLV640U: printf ("29LV640U (64 M, uniform sector)\n");
178 default: printf ("Unknown Chip Type\n");
182 printf (" Size: %ld MB in %d Sectors\n",
183 info->size >> 20, info->sector_count);
185 printf (" Sector Start Addresses:");
186 for (i=0; i<info->sector_count; ++i) {
191 info->protect[i] ? " (RO)" : " "
198 /*-----------------------------------------------------------------------
200 int flash_erase (flash_info_t *info, int s_first, int s_last)
202 int flag, prot, sect, l_sect;
203 ulong start, now, last;
205 if ((s_first < 0) || (s_first > s_last)) {
206 if (info->flash_id == FLASH_UNKNOWN) {
207 printf ("- missing\n");
209 printf ("- no sectors to erase\n");
215 for (sect = s_first; sect <= s_last; sect++) {
216 if (info->protect[sect])
221 printf ("- Warning: %d protected sectors will not be erased!\n",
229 /* Disable interrupts which might cause a timeout here */
230 flag = disable_interrupts();
232 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;
244 /* 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;
253 /* re-enable interrupts if necessary */
257 /* wait at least 80us - let's wait 1 ms */
261 * We wait for the last triggered sector
266 start = get_timer (0);
268 while ((V_ULONG( info->start[l_sect] ) & 0x00800080) != 0x00800080 ||
269 (V_ULONG( info->start[l_sect] + 4 ) & 0x00800080) != 0x00800080)
271 if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
272 printf ("Timeout\n");
275 /* show that we're waiting */
276 if ((now - last) > 1000) { /* every second */
283 /* reset to read mode */
290 static int write_dword (flash_info_t *, ulong, unsigned char *);
292 /*-----------------------------------------------------------------------
293 * Copy memory to flash, returns:
296 * 2 - Flash not erased
299 int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
302 static unsigned char bb[8];
303 int i, l, rc, cc = cnt;
305 dp = (addr & ~7); /* get lower dword aligned address */
308 * handle unaligned start bytes
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)
322 * handle word aligned part
325 if ((rc = write_dword(info, dp, src)) != 0) {
338 * handle unaligned tail bytes
340 for (i = 0; i < 8; i++) {
341 bb[i] = (i < cc) ? *src++ : V_BYTE(dp+i);
343 return (write_dword(info, dp, bb));
346 /*-----------------------------------------------------------------------
347 * Write a dword to Flash, returns:
350 * 2 - Flash not erased
352 static int write_dword (flash_info_t *info, ulong dest, unsigned char * pdata)
358 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 */
363 /* Check if Flash is (sufficiently) erased */
364 if ((*((vu_long *)dest) & ch) != ch
365 ||(*((vu_long *)(dest + 4)) & cl) != cl)
370 /* Disable interrupts which might cause a timeout here */
371 flag = disable_interrupts();
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;
382 /* re-enable interrupts if necessary */
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))) {
390 if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {