diff options
Diffstat (limited to 'util/flashrom/flash_rom.c')
| -rw-r--r-- | util/flashrom/flash_rom.c | 328 |
1 files changed, 328 insertions, 0 deletions
diff --git a/util/flashrom/flash_rom.c b/util/flashrom/flash_rom.c new file mode 100644 index 0000000000..ceb56ad8f6 --- /dev/null +++ b/util/flashrom/flash_rom.c @@ -0,0 +1,328 @@ +/* + * flash_rom.c: Flash programming utility for SiS 630/950 M/Bs + * + * + * Copyright 2000 Silicon Integrated System Corporation + * Copyright 2004 Tyan Corp + * yhlu yhlu@tyan.com add exclude start and end option + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + * + * Reference: + * 1. SiS 630 Specification + * 2. SiS 950 Specification + * + * $Id$ + */ + +#include <errno.h> +#include <fcntl.h> +#include <sys/mman.h> +#include <unistd.h> +#include <stdio.h> +#include <string.h> +#include <stdlib.h> + +#include "flash.h" +#include "jedec.h" +#include "m29f400bt.h" +#include "82802ab.h" +#include "msys_doc.h" +#include "am29f040b.h" +#include "sst28sf040.h" +#include "w49f002u.h" +#include "sst39sf020.h" +#include "sst49lf040.h" +#include "pm49fl004.h" +#include "mx29f002.h" +#include "sst_fwhub.h" + +struct flashchip flashchips[] = { + {"Am29F040B", AMD_ID, AM_29F040B, NULL, 512, 64 * 1024, + probe_29f040b, erase_29f040b, write_29f040b, NULL}, + {"At29C040A", ATMEL_ID, AT_29C040A, NULL, 512, 256, + probe_jedec, erase_chip_jedec, write_jedec, NULL}, + {"Mx29f002", MX_ID, MX_29F002, NULL, 256, 64 * 1024, + probe_29f002, erase_29f002, write_29f002, NULL}, + {"SST29EE020A", SST_ID, SST_29EE020A, NULL, 256, 128, + probe_jedec, erase_chip_jedec, write_jedec, NULL}, + {"SST28SF040A", SST_ID, SST_28SF040, NULL, 512, 256, + probe_28sf040, erase_28sf040, write_28sf040, NULL}, + {"SST39SF020A", SST_ID, SST_39SF020, NULL, 256, 4096, + probe_jedec, erase_chip_jedec, write_39sf020,NULL}, + {"SST39VF020", SST_ID, SST_39VF020, NULL, 256, 4096, + probe_jedec, erase_chip_jedec, write_39sf020,NULL}, + {"SST49LF040", SST_ID, SST_49LF040, NULL, 512, 4096, + probe_jedec, erase_49lf040, write_49lf040,NULL}, + {"SST49LF080A", SST_ID, SST_49LF080A, NULL, 1024, 4096, + probe_jedec, erase_chip_jedec, write_49lf040,NULL}, + {"SST49LF002A/B", SST_ID, SST_49LF002A, NULL, 256, 16 * 1024, + probe_sst_fwhub, erase_sst_fwhub, write_sst_fwhub, NULL}, + {"SST49LF003A/B", SST_ID, SST_49LF003A, NULL, 384, 64 * 1024, + probe_sst_fwhub, erase_sst_fwhub, write_sst_fwhub,NULL}, + {"SST49LF004A/B", SST_ID, SST_49LF004A, NULL, 512, 64 * 1024, + probe_sst_fwhub, erase_sst_fwhub, write_sst_fwhub,NULL}, + {"SST49LF008A", SST_ID, SST_49LF008A, NULL, 1024, 64 * 1024 , + probe_sst_fwhub, erase_sst_fwhub, write_sst_fwhub, NULL}, + {"Pm49FL004", PMC_ID, PMC_49FL004, NULL, 512, 64 * 1024, + probe_jedec, erase_chip_jedec, write_49fl004,NULL}, + {"W29C011", WINBOND_ID, W_29C011, NULL, 128, 128, + probe_jedec, erase_chip_jedec, write_jedec, NULL}, + {"W29C020C", WINBOND_ID, W_29C020C, NULL, 256, 128, + probe_jedec, erase_chip_jedec, write_jedec, NULL}, + {"W49F002U", WINBOND_ID, W_49F002U, NULL, 256, 128, + probe_jedec, erase_chip_jedec, write_49f002, NULL}, + {"M29F400BT", ST_ID, ST_M29F400BT, NULL, 512, 64 * 1024, + probe_m29f400bt, erase_m29f400bt, write_linuxbios_m29f400bt, NULL}, + {"82802ab", 137, 173, NULL, 512, 64 * 1024, + probe_82802ab, erase_82802ab, write_82802ab, NULL}, + {"82802ac", 137, 172, NULL, 1024, 64 * 1024, + probe_82802ab, erase_82802ab, write_82802ab, NULL}, + {"MD-2802 (M-Systems DiskOnChip Millennium Module)", + MSYSTEMS_ID, MSYSTEMS_MD2802, + NULL, 8, 8 * 1024, + probe_md2802, erase_md2802, write_md2802, read_md2802}, + {NULL,} +}; + +char *chip_to_probe = NULL; + +struct flashchip *probe_flash(struct flashchip *flash) +{ + int fd_mem; + volatile char *bios; + unsigned long size; + + if ((fd_mem = open("/dev/mem", O_RDWR)) < 0) { + perror("Can not open /dev/mem"); + exit(1); + } + + while (flash->name != NULL) { + if (chip_to_probe && strcmp(flash->name, chip_to_probe) != 0) { + flash++; + continue; + } + printf("Trying %s, %d KB\n", flash->name, flash->total_size); + size = flash->total_size * 1024; + /* BUG? what happens if getpagesize() > size!? + -> ``Error MMAP /dev/mem: Invalid argument'' NIKI */ + if (getpagesize() > size) { + size = getpagesize(); + printf("%s: warning: size: %d -> %ld\n", + __FUNCTION__, flash->total_size * 1024, + (unsigned long) size); + } + bios = mmap(0, size, PROT_WRITE | PROT_READ, MAP_SHARED, + fd_mem, (off_t) (0xffffffff - size + 1)); + if (bios == MAP_FAILED) { + perror("Error MMAP /dev/mem"); + exit(1); + } + flash->virt_addr = bios; + flash->fd_mem = fd_mem; + + if (flash->probe(flash) == 1) { + printf("%s found at physical address: 0x%lx\n", + flash->name, (0xffffffff - size + 1)); + return flash; + } + munmap((void *) bios, size); + flash++; + } + return NULL; +} + +int verify_flash(struct flashchip *flash, char *buf, int verbose) +{ + int i; + int total_size = flash->total_size * 1024; + volatile char *bios = flash->virt_addr; + + printf("Verifying address: "); + for (i = 0; i < total_size; i++) { + if (verbose) + printf("0x%08x", i); + if (*(bios + i) != *(buf + i)) { + printf("FAILED\n"); + return 0; + } + if (verbose) + printf("\b\b\b\b\b\b\b\b\b\b"); + } + if (verbose) + printf("\n"); + else + printf("VERIFIED\n"); + return 1; +} + + +void usage(const char *name) +{ + printf("usage: %s [-rwv] [-c chipname] [-s exclude_start] [-e exclude_end] [file]\n", name); + printf("-r: read flash and save into file\n" + "-w: write file into flash (default when file is specified)\n" + "-v: verify flash against file\n" + "-c: probe only for specified flash chip\n" + "-s: exclude start position\n" + "-e: exclude end postion\n" + " If no file is specified, then all that happens\n" + " is that flash info is dumped\n"); + exit(1); +} + +int exclude_start_page, exclude_end_page; + +int main(int argc, char *argv[]) +{ + char *buf; + unsigned long size; + FILE *image; + struct flashchip *flash; + int opt; + int read_it = 0, write_it = 0, erase_it = 0, verify_it = 0, + verbose = 0; + char *filename = NULL; + + + unsigned int exclude_start_position=0, exclude_end_position=0; // [x,y) + char *tempstr=NULL; + + if (argc > 1) { + /* Yes, print them. */ + int i; + printf ("The arguments are:\n"); + for (i = 1; i < argc; ++i) + printf ("%s\n", argv[i]); + } + + setbuf(stdout, NULL); + + while ((opt = getopt(argc, argv, "rwvVEc:s:e:")) != EOF) { + switch (opt) { + case 'r': + read_it = 1; + break; + case 'w': + write_it = 1; + break; + case 'v': + verify_it = 1; + break; + case 'c': + chip_to_probe = strdup(optarg); + break; + case 'V': + verbose = 1; + break; + case 'E': + erase_it = 1; + break; + case 's': + tempstr = strdup(optarg); + sscanf(tempstr,"%x",&exclude_start_position); + break; + case 'e': + tempstr = strdup(optarg); + sscanf(tempstr,"%x",&exclude_end_position); + break; + + default: + usage(argv[0]); + break; + } + } + + if (read_it && write_it) { + printf("-r and -w are mutually exclusive\n"); + usage(argv[0]); + } + + if (optind < argc) + filename = argv[optind++]; + + printf("Calibrating timer since microsleep sucks ... takes a second\n"); + myusec_calibrate_delay(); + printf("OK, calibrated, now do the deed\n"); + + /* try to enable it. Failure IS an option, since not all motherboards + * really need this to be done, etc., etc. It sucks. + */ + (void) enable_flash_write(); + + if ((flash = probe_flash(flashchips)) == NULL) { + printf("EEPROM not found\n"); + exit(1); + } + + printf("Part is %s\n", flash->name); + if (!filename && !erase_it) { + printf("OK, only ENABLING flash write, but NOT FLASHING\n"); + return 0; + } + size = flash->total_size * 1024; + buf = (char *) calloc(size, sizeof(char)); + + if (erase_it) { + printf("Erasing flash chip\n"); + flash->erase(flash); + exit(0); + } else if (read_it) { + if ((image = fopen(filename, "w")) == NULL) { + perror(filename); + exit(1); + } + printf("Reading Flash..."); + if (flash->read == NULL) + memcpy(buf, (const char *) flash->virt_addr, size); + else + flash->read(flash, buf); + + if (exclude_end_position - exclude_start_position > 0) + memset(buf+exclude_start_position, 0, + exclude_end_position-exclude_start_position); + + fwrite(buf, sizeof(char), size, image); + fclose(image); + printf("done\n"); + } else { + if ((image = fopen(filename, "r")) == NULL) { + perror(filename); + exit(1); + } + fread(buf, sizeof(char), size, image); + fclose(image); + } + + if (exclude_end_position - exclude_start_position > 0) + memcpy(buf+exclude_start_position, + (const char *) flash->virt_addr+exclude_start_position, + exclude_end_position-exclude_start_position); + + exclude_start_page = exclude_start_position/flash->page_size; + if ((exclude_start_position%flash->page_size) != 0) { + exclude_start_page++; + } + exclude_end_page = exclude_end_position/flash->page_size; + + if (write_it || (!read_it && !verify_it)) { + flash->write(flash, buf); + } + if (verify_it) + verify_flash(flash, buf, verbose); + return 0; +} |