2 * flash_rom.c: Flash programming utility for SiS 630/950 M/Bs
5 * Copyright 2000 Silicon Integrated System Corporation
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 * 1. SiS 630 Specification
24 * 2. SiS 950 Specification
39 #include "m29f400bt.h"
42 #include "am29f040b.h"
43 #include "sst28sf040.h"
45 #include "sst39sf020.h"
46 #include "sst49lf040.h"
47 #include "pm49fl004.h"
50 struct flashchip flashchips[] = {
51 {"Am29F040B", AMD_ID, AM_29F040B, NULL, 512, 64*1024,
52 probe_29f040b, erase_29f040b, write_29f040b, NULL},
53 {"At29C040A", ATMEL_ID, AT_29C040A, NULL, 512, 256,
54 probe_jedec, erase_jedec, write_jedec, NULL},
55 {"Mx29f002", MX_ID, MX_29F002, NULL, 256, 64*1024,
56 probe_29f002, erase_29f002, write_29f002, NULL},
57 {"SST29EE020A", SST_ID, SST_29EE020A, NULL, 256, 128,
58 probe_jedec, erase_jedec, write_jedec, NULL},
59 {"SST28SF040A", SST_ID, SST_28SF040, NULL, 512, 256,
60 probe_28sf040, erase_28sf040, write_28sf040, NULL},
61 {"SST39SF020A", SST_ID, SST_39SF020, NULL, 256, 4096,
62 probe_39sf020, erase_39sf020, write_39sf020, NULL},
63 {"SST39VF020", SST_ID, SST_39VF020, NULL, 256, 4096,
64 probe_39sf020, erase_39sf020, write_39sf020, NULL},
65 {"SST49LF040", SST_ID, SST_49LF040, NULL, 512, 4096,
66 probe_49lf040, erase_49lf040, write_49lf040, NULL},
68 {"Pm49FL004", PMC_ID, PMC_49FL004, NULL, 512, 64*1024,
69 probe_49fl004, erase_49fl004, write_49fl004, NULL},
71 {"W29C011", WINBOND_ID, W_29C011, NULL, 128, 128,
72 probe_jedec, erase_jedec, write_jedec, NULL},
73 {"W29C020C", WINBOND_ID, W_29C020C, NULL, 256, 128,
74 probe_jedec, erase_jedec, write_jedec, NULL},
75 {"W49F002U", WINBOND_ID, W_49F002U, NULL, 256, 128,
76 probe_49f002, erase_49f002, write_49f002, NULL},
77 {"M29F400BT", ST_ID, ST_M29F400BT , NULL, 512, 64*1024,
78 probe_m29f400bt, erase_m29f400bt, write_linuxbios_m29f400bt, NULL},
79 {"82802ab", 137, 173 , NULL, 512, 64*1024,
80 probe_82802ab, erase_82802ab, write_82802ab, NULL},
81 {"82802ac", 137, 172 , NULL, 1024, 64*1024,
82 probe_82802ab, erase_82802ab, write_82802ab, NULL},
83 {"MD-2802 (M-Systems DiskOnChip Millennium Module)",
84 MSYSTEMS_ID, MSYSTEMS_MD2802,
86 probe_md2802, erase_md2802, write_md2802, read_md2802},
90 char *chip_to_probe = NULL;
92 struct flashchip * probe_flash(struct flashchip * flash)
98 if ((fd_mem = open("/dev/mem", O_RDWR)) < 0) {
99 perror("Can not open /dev/mem");
103 while (flash->name != NULL) {
104 if (chip_to_probe && strcmp(flash->name, chip_to_probe) != 0) {
108 printf("Trying %s, %d KB\n", flash->name, flash->total_size);
109 size = flash->total_size * 1024;
110 /* BUG? what happens if getpagesize() > size!?
111 -> ``Error MMAP /dev/mem: Invalid argument'' NIKI */
112 if (getpagesize() > size) {
113 size = getpagesize();
114 printf("%s: warning: size: %d -> %ld\n", __FUNCTION__,
115 flash->total_size * 1024, (unsigned long)size);
117 bios = mmap (0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
118 //fd_mem, (off_t) (0x100000000-size));
119 fd_mem, (off_t) (0xffffffff-size+1));
120 if (bios == MAP_FAILED) {
121 perror("Error MMAP /dev/mem");
124 flash->virt_addr = bios;
125 flash->fd_mem = fd_mem;
127 if (flash->probe(flash) == 1) {
128 printf ("%s found at physical address: 0x%lx\n",
129 flash->name, (0 - size));
132 munmap ((void *) bios, size);
138 int verify_flash (struct flashchip * flash, char * buf, int verbose)
141 int total_size = flash->total_size *1024;
142 volatile char * bios = flash->virt_addr;
144 printf("Verifying address: ");
145 while (i++ < total_size) {
148 if (*(bios+i) != *(buf+i)) {
153 printf("\b\b\b\b\b\b\b\b\b\b");
158 printf("VERIFIED\n");
163 void usage(const char *name)
165 printf("usage: %s [-rwv] [-c chipname][file]\n", name);
166 printf("-r: read flash and save into file\n"
167 "-w: write file into flash (default when file is specified)\n"
168 "-v: verify flash against file\n"
169 "-c: probe only for specified flash chip\n"
170 " If no file is specified, then all that happens\n"
171 " is that flash info is dumped\n");
175 int main (int argc, char * argv[])
180 struct flashchip * flash;
182 int read_it = 0, write_it = 0, verify_it = 0;
183 char *filename = NULL;
185 setbuf(stdout, NULL);
187 while ((opt = getopt(argc, argv, "rwvc:")) != EOF) {
199 chip_to_probe = strdup(optarg);
206 if (read_it && write_it) {
207 printf("-r and -w are mutually exclusive\n");
212 filename = argv[optind++];
214 printf("Calibrating timer since microsleep sucks ... takes a second\n");
215 myusec_calibrate_delay();
216 printf("OK, calibrated, now do the deed\n");
218 /* try to enable it. Failure IS an option, since not all motherboards
219 * really need this to be done, etc., etc. It sucks.
221 (void) enable_flash_write();
223 if ((flash = probe_flash (flashchips)) == NULL) {
224 printf("EEPROM not found\n");
228 printf("Part is %s\n", flash->name);
230 printf("OK, only ENABLING flash write, but NOT FLASHING\n");
233 size = flash->total_size * 1024;
234 buf = (char *) calloc (size, sizeof(char));
237 if ((image = fopen (filename, "w")) == NULL) {
241 printf("Reading Flash...");
242 if(flash->read == NULL)
243 memcpy(buf, (const char *) flash->virt_addr, size);
245 flash->read (flash, buf);
246 fwrite(buf, sizeof(char), size, image);
250 if ((image = fopen (filename, "r")) == NULL) {
254 fread (buf, sizeof(char), size, image);
258 if (write_it || (!read_it && !verify_it))
259 flash->write (flash, buf);
261 verify_flash (flash, buf, /* verbose = */ 0);