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rename CFG_ macros to CONFIG_SYS
[karo-tx-uboot.git] / board / altera / common / AMDLV065D.c
1 /*
2  * (C) Copyright 2000-2004
3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4  *
5  * See file CREDITS for list of people who contributed to this
6  * project.
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU General Public License as
10  * published by the Free Software Foundation; either version 2 of
11  * the License, or (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21  * MA 02111-1307 USA
22  */
23
24
25 #include <common.h>
26 #if defined(CONFIG_NIOS)
27 #include <nios.h>
28 #else
29 #include <asm/io.h>
30 #endif
31
32 #define SECTSZ          (64 * 1024)
33 flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
34
35 /*----------------------------------------------------------------------*/
36 unsigned long flash_init (void)
37 {
38         int i;
39         unsigned long addr;
40         flash_info_t *fli = &flash_info[0];
41
42         fli->size = CONFIG_SYS_FLASH_SIZE;
43         fli->sector_count = CONFIG_SYS_MAX_FLASH_SECT;
44         fli->flash_id = FLASH_MAN_AMD + FLASH_AMDLV065D;
45
46         addr = CONFIG_SYS_FLASH_BASE;
47         for (i = 0; i < fli->sector_count; ++i) {
48                 fli->start[i] = addr;
49                 addr += SECTSZ;
50                 fli->protect[i] = 1;
51         }
52
53         return (CONFIG_SYS_FLASH_SIZE);
54 }
55 /*--------------------------------------------------------------------*/
56 void flash_print_info (flash_info_t * info)
57 {
58         int i, k;
59         int erased;
60         unsigned long *addr;
61
62         printf ("  Size: %ld KB in %d Sectors\n",
63                 info->size >> 10, info->sector_count);
64         printf ("  Sector Start Addresses:");
65         for (i = 0; i < info->sector_count; ++i) {
66
67                 /* Check if whole sector is erased */
68                 erased = 1;
69                 addr = (unsigned long *) info->start[i];
70                 for (k = 0; k < SECTSZ/sizeof(unsigned long); k++) {
71                         if ( readl(addr++) != (unsigned long)-1) {
72                                 erased = 0;
73                                 break;
74                         }
75                 }
76
77                 /* Print the info */
78                 if ((i % 5) == 0)
79                         printf ("\n   ");
80                 printf (" %08lX%s%s",
81                         info->start[i],
82                         erased ? " E" : "  ",
83                         info->protect[i] ? "RO " : "   ");
84         }
85         printf ("\n");
86 }
87
88 /*-------------------------------------------------------------------*/
89
90
91 int flash_erase (flash_info_t * info, int s_first, int s_last)
92 {
93         unsigned char *addr = (unsigned char *) info->start[0];
94         unsigned char *addr2;
95         int prot, sect;
96         ulong start;
97
98         /* Some sanity checking */
99         if ((s_first < 0) || (s_first > s_last)) {
100                 printf ("- no sectors to erase\n");
101                 return 1;
102         }
103
104         prot = 0;
105         for (sect = s_first; sect <= s_last; ++sect) {
106                 if (info->protect[sect]) {
107                         prot++;
108                 }
109         }
110         if (prot) {
111                 printf ("- Warning: %d protected sectors will not be erased!\n",
112                         prot);
113         } else {
114                 printf ("\n");
115         }
116
117         /* It's ok to erase multiple sectors provided we don't delay more
118          * than 50 usec between cmds ... at which point the erase time-out
119          * occurs. So don't go and put printf() calls in the loop ... it
120          * won't be very helpful ;-)
121          */
122         for (sect = s_first; sect <= s_last; sect++) {
123                 if (info->protect[sect] == 0) { /* not protected */
124                         addr2 = (unsigned char *) info->start[sect];
125                         writeb (addr, 0xaa);
126                         writeb (addr,  0x55);
127                         writeb (addr,  0x80);
128                         writeb (addr,  0xaa);
129                         writeb (addr,  0x55);
130                         writeb (addr2, 0x30);
131                         /* Now just wait for 0xff & provide some user
132                          * feedback while we wait.
133                          */
134                         start = get_timer (0);
135                         while ( readb (addr2) != 0xff) {
136                                 udelay (1000 * 1000);
137                                 putc ('.');
138                                 if (get_timer (start) > CONFIG_SYS_FLASH_ERASE_TOUT) {
139                                         printf ("timeout\n");
140                                         return 1;
141                                 }
142                         }
143                 }
144         }
145         printf ("\n");
146         return 0;
147 }
148
149 /*-----------------------------------------------------------------------
150  * Copy memory to flash, returns:
151  * 0 - OK
152  * 1 - write timeout
153  * 2 - Flash not erased
154  */
155
156 int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
157 {
158
159         vu_char *cmd = (vu_char *) info->start[0];
160         vu_char *dst = (vu_char *) addr;
161         unsigned char b;
162         ulong start;
163
164         while (cnt) {
165                 /* Check for sufficient erase */
166                 b = *src;
167                 if ((readb (dst) & b) != b) {
168                         printf ("%02x : %02x\n", readb (dst), b);
169                         return (2);
170                 }
171
172                 writeb (cmd,  0xaa);
173                 writeb (cmd,  0x55);
174                 writeb (cmd,  0xa0);
175                 writeb (dst, b);
176
177                 /* Verify write */
178                 start = get_timer (0);
179                 while (readb (dst) != b) {
180                         if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
181                                 return 1;
182                         }
183                 }
184                 dst++;
185                 src++;
186                 cnt--;
187         }
188
189         return (0);
190 }