278 lines
7.7 KiB
C
278 lines
7.7 KiB
C
/*
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* flash_rom.c: Flash programming utility for SiS 630/950 M/Bs
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*
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*
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* Copyright 2000 Silicon Integrated System Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*
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* Reference:
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* 1. SiS 630 Specification
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* 2. SiS 950 Specification
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*
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* $Id$
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*/
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/mman.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include "flash.h"
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#include "jedec.h"
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#include "m29f400bt.h"
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#include "82802ab.h"
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#include "msys_doc.h"
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#include "am29f040b.h"
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#include "sst28sf040.h"
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#include "w49f002u.h"
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#include "sst39sf020.h"
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#include "sst49lf040.h"
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#include "pm49fl004.h"
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#include "mx29f002.h"
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struct flashchip flashchips[] = {
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{"Am29F040B", AMD_ID, AM_29F040B, NULL, 512, 64*1024,
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probe_29f040b, erase_29f040b, write_29f040b, NULL},
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{"At29C040A", ATMEL_ID, AT_29C040A, NULL, 512, 256,
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probe_jedec, erase_jedec, write_jedec, NULL},
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{"Mx29f002", MX_ID, MX_29F002, NULL, 256, 64*1024,
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probe_29f002, erase_29f002, write_29f002, NULL},
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{"SST29EE020A", SST_ID, SST_29EE020A, NULL, 256, 128,
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probe_jedec, erase_jedec, write_jedec, NULL},
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{"SST28SF040A", SST_ID, SST_28SF040, NULL, 512, 256,
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probe_28sf040, erase_28sf040, write_28sf040, NULL},
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{"SST39SF020A", SST_ID, SST_39SF020, NULL, 256, 4096,
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probe_39sf020, erase_39sf020, write_39sf020, NULL},
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{"SST39VF020", SST_ID, SST_39VF020, NULL, 256, 4096,
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probe_39sf020, erase_39sf020, write_39sf020, NULL},
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{"SST49LF040", SST_ID, SST_49LF040, NULL, 512, 4096,
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probe_49lf040, erase_49lf040, write_49lf040, NULL},
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{"SST49LF080A", SST_ID, SST_49LF080A, NULL, 1024, 4096,
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probe_49lf040, erase_49lf040, write_49lf040, NULL},
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{"SST49LF002A", SST_ID, SST_49LF002A, NULL, 256, 4096,
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probe_49lf040, erase_49lf040, write_49lf040, NULL},
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{"SST49LF003A", SST_ID, SST_49LF003A, NULL, 384, 4096,
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probe_49lf040, erase_49lf040, write_49lf040, NULL},
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{"SST49LF004A", SST_ID, SST_49LF004A, NULL, 512, 4096,
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probe_49lf040, erase_49lf040, write_49lf040, NULL},
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{"SST49LF008A", SST_ID, SST_49LF008A, NULL, 1024, 4096,
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probe_49lf040, erase_49lf040, write_49lf040, NULL},
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//By LYH begin
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{"Pm49FL004", PMC_ID, PMC_49FL004, NULL, 512, 64*1024,
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probe_49fl004, erase_49fl004, write_49fl004, NULL},
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//END
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{"W29C011", WINBOND_ID, W_29C011, NULL, 128, 128,
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probe_jedec, erase_jedec, write_jedec, NULL},
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{"W29C020C", WINBOND_ID, W_29C020C, NULL, 256, 128,
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probe_jedec, erase_jedec, write_jedec, NULL},
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{"W49F002U", WINBOND_ID, W_49F002U, NULL, 256, 128,
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probe_49f002, erase_49f002, write_49f002, NULL},
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{"M29F400BT", ST_ID, ST_M29F400BT , NULL, 512, 64*1024,
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probe_m29f400bt, erase_m29f400bt, write_linuxbios_m29f400bt, NULL},
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{"82802ab", 137, 173 , NULL, 512, 64*1024,
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probe_82802ab, erase_82802ab, write_82802ab, NULL},
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{"82802ac", 137, 172 , NULL, 1024, 64*1024,
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probe_82802ab, erase_82802ab, write_82802ab, NULL},
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{"MD-2802 (M-Systems DiskOnChip Millennium Module)",
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MSYSTEMS_ID, MSYSTEMS_MD2802,
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NULL, 8, 8*1024,
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probe_md2802, erase_md2802, write_md2802, read_md2802},
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{NULL,}
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};
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char *chip_to_probe = NULL;
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struct flashchip * probe_flash(struct flashchip * flash)
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{
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int fd_mem;
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volatile char * bios;
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unsigned long size;
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if ((fd_mem = open("/dev/mem", O_RDWR)) < 0) {
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perror("Can not open /dev/mem");
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exit(1);
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}
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while (flash->name != NULL) {
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if (chip_to_probe && strcmp(flash->name, chip_to_probe) != 0) {
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flash++;
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continue;
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}
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printf("Trying %s, %d KB\n", flash->name, flash->total_size);
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size = flash->total_size * 1024;
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/* BUG? what happens if getpagesize() > size!?
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-> ``Error MMAP /dev/mem: Invalid argument'' NIKI */
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if (getpagesize() > size) {
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size = getpagesize();
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printf("%s: warning: size: %d -> %ld\n", __FUNCTION__,
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flash->total_size * 1024, (unsigned long)size);
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}
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bios = mmap (0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
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fd_mem, (off_t) (0xffffffff - size + 1));
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if (bios == MAP_FAILED) {
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perror("Error MMAP /dev/mem");
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exit(1);
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}
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flash->virt_addr = bios;
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flash->fd_mem = fd_mem;
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if (flash->probe(flash) == 1) {
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printf ("%s found at physical address: 0x%lx\n",
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flash->name, (0xffffffff - size + 1));
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return flash;
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}
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munmap ((void *) bios, size);
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flash++;
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}
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return NULL;
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}
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int verify_flash (struct flashchip * flash, char * buf, int verbose)
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{
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int i = 0;
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int total_size = flash->total_size *1024;
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volatile char * bios = flash->virt_addr;
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printf("Verifying address: ");
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while (i < total_size) {
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if (verbose)
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printf("0x%08x", i);
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if (*(bios+i) != *(buf+i)) {
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printf("FAILED\n");
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return 0;
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}
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if (verbose)
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printf("\b\b\b\b\b\b\b\b\b\b");
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i++;
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}
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if (verbose)
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printf("\n");
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else
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printf("VERIFIED\n");
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return 1;
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}
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void usage(const char *name)
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{
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printf("usage: %s [-rwv] [-c chipname][file]\n", name);
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printf("-r: read flash and save into file\n"
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"-w: write file into flash (default when file is specified)\n"
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"-v: verify flash against file\n"
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"-c: probe only for specified flash chip\n"
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" If no file is specified, then all that happens\n"
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" is that flash info is dumped\n");
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exit(1);
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}
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int main (int argc, char * argv[])
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{
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char * buf;
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unsigned long size;
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FILE * image;
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struct flashchip * flash;
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int opt;
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int read_it = 0, write_it = 0, verify_it = 0, verbose = 0;
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char *filename = NULL;
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setbuf(stdout, NULL);
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while ((opt = getopt(argc, argv, "rwvVc:")) != EOF) {
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switch (opt) {
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case 'r':
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read_it = 1;
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break;
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case 'w':
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write_it = 1;
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break;
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case 'v':
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verify_it = 1;
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break;
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case 'c':
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chip_to_probe = strdup(optarg);
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break;
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case 'V':
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verbose = 1;
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break;
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default:
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usage(argv[0]);
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break;
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}
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}
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if (read_it && write_it) {
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printf("-r and -w are mutually exclusive\n");
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usage(argv[0]);
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}
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if (optind < argc)
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filename = argv[optind++];
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printf("Calibrating timer since microsleep sucks ... takes a second\n");
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myusec_calibrate_delay();
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printf("OK, calibrated, now do the deed\n");
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/* try to enable it. Failure IS an option, since not all motherboards
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* really need this to be done, etc., etc. It sucks.
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*/
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(void) enable_flash_write();
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if ((flash = probe_flash (flashchips)) == NULL) {
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printf("EEPROM not found\n");
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exit(1);
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}
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printf("Part is %s\n", flash->name);
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if (!filename){
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printf("OK, only ENABLING flash write, but NOT FLASHING\n");
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return 0;
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}
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size = flash->total_size * 1024;
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buf = (char *) calloc (size, sizeof(char));
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if (read_it) {
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if ((image = fopen (filename, "w")) == NULL) {
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perror(filename);
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exit(1);
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}
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printf("Reading Flash...");
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if(flash->read == NULL)
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memcpy(buf, (const char *) flash->virt_addr, size);
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else
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flash->read (flash, buf);
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fwrite(buf, sizeof(char), size, image);
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fclose(image);
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printf("done\n");
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} else {
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if ((image = fopen (filename, "r")) == NULL) {
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perror(filename);
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exit(1);
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}
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fread (buf, sizeof(char), size, image);
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fclose(image);
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}
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if (write_it || (!read_it && !verify_it))
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flash->write (flash, buf);
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if (verify_it)
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verify_flash (flash, buf, verbose);
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return 0;
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}
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